add cairo

377 files changed, 245003 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/src/CMakeLists.txt b/libs/cairo-1.16.0/src/CMakeLists.txt
new file mode 100644
index 0000000..1f94878
--- /dev/null
+++ b/libs/cairo-1.16.0/src/CMakeLists.txt
@@ -0,0 +1,653 @@
+include (sources.cmake)
+
+set(supported_cairo_headers ${cairo_headers})
+set(unsupported_cairo_headers)
+set(all_cairo_headers ${cairo_headers})
+set(all_cairo_private ${cairo_private})
+set(all_cairo_cxx_sources ${cairo_cxx_sources})
+set(all_cairo_sources ${cairo_sources})
+
+set(enabled_cairo_headers ${cairo_headers})
+set(enabled_cairo_private ${cairo_private})
+set(enabled_cairo_cxx_sources ${cairo_cxx_sources})
+set(enabled_cairo_sources ${cairo_sources})
+
+set(all_cairo_pkgconf cairo.pc)
+set(enabled_cairo_pkgconf cairo.pc)
+
+set(supported_cairo_headers ${cairo_xlib_headers})
+list(APPEND all_cairo_headers ${cairo_xlib_headers})
+list(APPEND all_cairo_private ${cairo_xlib_private})
+list(APPEND all_cairo_cxx_sources ${cairo_xlib_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_xlib_sources})
+if(CAIRO_HAS_XLIB_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_xlib_headers})
+list(APPEND enabled_cairo_private ${cairo_xlib_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_xlib_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_xlib_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-xlib.pc)
+if(CAIRO_HAS_XLIB_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-xlib.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_xlib_xrender_headers})
+list(APPEND all_cairo_headers ${cairo_xlib_xrender_headers})
+list(APPEND all_cairo_private ${cairo_xlib_xrender_private})
+list(APPEND all_cairo_cxx_sources ${cairo_xlib_xrender_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_xlib_xrender_sources})
+if(CAIRO_HAS_XLIB_XRENDER_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_xlib_xrender_headers})
+list(APPEND enabled_cairo_private ${cairo_xlib_xrender_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_xlib_xrender_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_xlib_xrender_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-xlib-xrender.pc)
+if(CAIRO_HAS_XLIB_XRENDER_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-xlib-xrender.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_xcb_headers})
+list(APPEND all_cairo_headers ${cairo_xcb_headers})
+list(APPEND all_cairo_private ${cairo_xcb_private})
+list(APPEND all_cairo_cxx_sources ${cairo_xcb_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_xcb_sources})
+if(CAIRO_HAS_XCB_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_xcb_headers})
+list(APPEND enabled_cairo_private ${cairo_xcb_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_xcb_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_xcb_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-xcb.pc)
+if(CAIRO_HAS_XCB_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-xcb.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_xlib_xcb_headers})
+list(APPEND all_cairo_headers ${cairo_xlib_xcb_headers})
+list(APPEND all_cairo_private ${cairo_xlib_xcb_private})
+list(APPEND all_cairo_cxx_sources ${cairo_xlib_xcb_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_xlib_xcb_sources})
+if(CAIRO_HAS_XLIB_XCB_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_xlib_xcb_headers})
+list(APPEND enabled_cairo_private ${cairo_xlib_xcb_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_xlib_xcb_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_xlib_xcb_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-xlib-xcb.pc)
+if(CAIRO_HAS_XLIB_XCB_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-xlib-xcb.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_xcb_shm_headers})
+list(APPEND all_cairo_headers ${cairo_xcb_shm_headers})
+list(APPEND all_cairo_private ${cairo_xcb_shm_private})
+list(APPEND all_cairo_cxx_sources ${cairo_xcb_shm_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_xcb_shm_sources})
+if(CAIRO_HAS_XCB_SHM_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_xcb_shm_headers})
+list(APPEND enabled_cairo_private ${cairo_xcb_shm_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_xcb_shm_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_xcb_shm_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-xcb-shm.pc)
+if(CAIRO_HAS_XCB_SHM_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-xcb-shm.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_qt_headers})
+list(APPEND all_cairo_headers ${cairo_qt_headers})
+list(APPEND all_cairo_private ${cairo_qt_private})
+list(APPEND all_cairo_cxx_sources ${cairo_qt_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_qt_sources})
+if (CAIRO_HAS_QT_SURFACE})
+list(APPEND enabled_cairo_headers ${cairo_qt_headers})
+list(APPEND enabled_cairo_private ${cairo_qt_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_qt_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_qt_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-qt.pc)
+if(CAIRO_HAS_QT_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-qt.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_quartz_headers})
+list(APPEND all_cairo_headers ${cairo_quartz_headers})
+list(APPEND all_cairo_private ${cairo_quartz_private})
+list(APPEND all_cairo_cxx_sources ${cairo_quartz_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_quartz_sources})
+if(CAIRO_HAS_QUARTZ_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_quartz_headers})
+list(APPEND enabled_cairo_private ${cairo_quartz_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_quartz_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_quartz_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-quartz.pc)
+if(CAIRO_HAS_QUARTZ_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-quartz.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_quartz_font_headers})
+list(APPEND all_cairo_headers ${cairo_quartz_font_headers})
+list(APPEND all_cairo_private ${cairo_quartz_font_private})
+list(APPEND all_cairo_cxx_sources ${cairo_quartz_font_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_quartz_font_sources})
+if(CAIRO_HAS_QUARTZ_FONT)
+list(APPEND enabled_cairo_headers ${cairo_quartz_font_headers})
+list(APPEND enabled_cairo_private ${cairo_quartz_font_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_quartz_font_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_quartz_font_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-quartz-font.pc)
+if(CAIRO_HAS_QUARTZ_FONT)
+list(APPEND enabled_cairo_pkgconf cairo-quartz-font.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_quartz_image_headers})
+list(APPEND all_cairo_headers ${cairo_quartz_image_headers})
+list(APPEND all_cairo_private ${cairo_quartz_image_private})
+list(APPEND all_cairo_cxx_sources ${cairo_quartz_image_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_quartz_image_sources})
+if(CAIRO_HAS_QUARTZ_IMAGE_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_quartz_image_headers})
+list(APPEND enabled_cairo_private ${cairo_quartz_image_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_quartz_image_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_quartz_image_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-quartz-image.pc)
+if(CAIRO_HAS_QUARTZ_IMAGE_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-quartz-image.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_win32_headers})
+list(APPEND all_cairo_headers ${cairo_win32_headers})
+list(APPEND all_cairo_private ${cairo_win32_private})
+list(APPEND all_cairo_cxx_sources ${cairo_win32_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_win32_sources})
+if(CAIRO_HAS_WIN32_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_win32_headers})
+list(APPEND enabled_cairo_private ${cairo_win32_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_win32_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_win32_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-win32.pc)
+if(CAIRO_HAS_WIN32_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-win32.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_win32_font_headers})
+list(APPEND all_cairo_headers ${cairo_win32_font_headers})
+list(APPEND all_cairo_private ${cairo_win32_font_private})
+list(APPEND all_cairo_cxx_sources ${cairo_win32_font_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_win32_font_sources})
+if(CAIRO_HAS_WIN32_FONT)
+list(APPEND enabled_cairo_headers ${cairo_win32_font_headers})
+list(APPEND enabled_cairo_private ${cairo_win32_font_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_win32_font_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_win32_font_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-win32-font.pc)
+if(CAIRO_HAS_WIN32_FONT)
+list(APPEND enabled_cairo_pkgconf cairo-win32-font.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_skia_headers})
+list(APPEND all_cairo_headers ${cairo_skia_headers})
+list(APPEND all_cairo_private ${cairo_skia_private})
+list(APPEND all_cairo_cxx_sources ${cairo_skia_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_skia_sources})
+if(CAIRO_HAS_SKIA_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_skia_headers})
+list(APPEND enabled_cairo_private ${cairo_skia_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_skia_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_skia_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-skia.pc)
+if(CAIRO_HAS_SKIA_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-skia.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_os2_headers})
+list(APPEND all_cairo_headers ${cairo_os2_headers})
+list(APPEND all_cairo_private ${cairo_os2_private})
+list(APPEND all_cairo_cxx_sources ${cairo_os2_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_os2_sources})
+if(CAIRO_HAS_OS2_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_os2_headers})
+list(APPEND enabled_cairo_private ${cairo_os2_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_os2_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_os2_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-os2.pc)
+if(CAIRO_HAS_OS2_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-os2.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_beos_headers})
+list(APPEND all_cairo_headers ${cairo_beos_headers})
+list(APPEND all_cairo_private ${cairo_beos_private})
+list(APPEND all_cairo_cxx_sources ${cairo_beos_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_beos_sources})
+if(CAIRO_HAS_BEOS_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_beos_headers})
+list(APPEND enabled_cairo_private ${cairo_beos_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_beos_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_beos_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-beos.pc)
+if(CAIRO_HAS_BEOS_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-beos.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_drm_headers})
+list(APPEND all_cairo_headers ${cairo_drm_headers})
+list(APPEND all_cairo_private ${cairo_drm_private})
+list(APPEND all_cairo_cxx_sources ${cairo_drm_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_drm_sources})
+if(CAIRO_HAS_DRM_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_drm_headers})
+list(APPEND enabled_cairo_private ${cairo_drm_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_drm_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_drm_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-drm.pc)
+if(CAIRO_HAS_DRM_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-drm.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_gallium_headers})
+list(APPEND all_cairo_headers ${cairo_gallium_headers})
+list(APPEND all_cairo_private ${cairo_gallium_private})
+list(APPEND all_cairo_cxx_sources ${cairo_gallium_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_gallium_sources})
+if(CAIRO_HAS_GALLIUM_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_gallium_headers})
+list(APPEND enabled_cairo_private ${cairo_gallium_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_gallium_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_gallium_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-gallium.pc)
+if(CAIRO_HAS_GALLIUM_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-gallium.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_png_headers})
+list(APPEND all_cairo_headers ${cairo_png_headers})
+list(APPEND all_cairo_private ${cairo_png_private})
+list(APPEND all_cairo_cxx_sources ${cairo_png_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_png_sources})
+if(CAIRO_HAS_PNG_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_png_headers})
+list(APPEND enabled_cairo_private ${cairo_png_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_png_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_png_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-png.pc)
+if(CAIRO_HAS_PNG_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-png.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_gl_headers})
+list(APPEND all_cairo_headers ${cairo_gl_headers})
+list(APPEND all_cairo_private ${cairo_gl_private})
+list(APPEND all_cairo_cxx_sources ${cairo_gl_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_gl_sources})
+if(CAIRO_HAS_GL_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_gl_headers})
+list(APPEND enabled_cairo_private ${cairo_gl_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_gl_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_gl_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-gl.pc)
+if(CAIRO_HAS_GL_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-gl.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_glesv2_headers})
+list(APPEND all_cairo_headers ${cairo_glesv2_headers})
+list(APPEND all_cairo_private ${cairo_glesv2_private})
+list(APPEND all_cairo_cxx_sources ${cairo_glesv2_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_glesv2_sources})
+if(CAIRO_HAS_GLESV2_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_glesv2_headers})
+list(APPEND enabled_cairo_private ${cairo_glesv2_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_glesv2_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_glesv2_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-glesv2.pc)
+if(CAIRO_HAS_GLESV2_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-glesv2.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_directfb_headers})
+list(APPEND all_cairo_headers ${cairo_directfb_headers})
+list(APPEND all_cairo_private ${cairo_directfb_private})
+list(APPEND all_cairo_cxx_sources ${cairo_directfb_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_directfb_sources})
+if(CAIRO_HAS_DIRECTFB_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_directfb_headers})
+list(APPEND enabled_cairo_private ${cairo_directfb_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_directfb_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_directfb_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-directfb.pc)
+if(CAIRO_HAS_DIRECTFB_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-directfb.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_vg_headers})
+list(APPEND all_cairo_headers ${cairo_vg_headers})
+list(APPEND all_cairo_private ${cairo_vg_private})
+list(APPEND all_cairo_cxx_sources ${cairo_vg_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_vg_sources})
+if(CAIRO_HAS_VG_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_vg_headers})
+list(APPEND enabled_cairo_private ${cairo_vg_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_vg_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_vg_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-vg.pc)
+if(CAIRO_HAS_VG_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-vg.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_egl_headers})
+list(APPEND all_cairo_headers ${cairo_egl_headers})
+list(APPEND all_cairo_private ${cairo_egl_private})
+list(APPEND all_cairo_cxx_sources ${cairo_egl_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_egl_sources})
+if(CAIRO_HAS_EGL_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_egl_headers})
+list(APPEND enabled_cairo_private ${cairo_egl_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_egl_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_egl_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-egl.pc)
+if(CAIRO_HAS_EGL_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-egl.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_glx_headers})
+list(APPEND all_cairo_headers ${cairo_glx_headers})
+list(APPEND all_cairo_private ${cairo_glx_private})
+list(APPEND all_cairo_cxx_sources ${cairo_glx_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_glx_sources})
+if(CAIRO_HAS_GLX_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_glx_headers})
+list(APPEND enabled_cairo_private ${cairo_glx_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_glx_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_glx_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-glx.pc)
+if(CAIRO_HAS_GLX_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-glx.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_wgl_headers})
+list(APPEND all_cairo_headers ${cairo_wgl_headers})
+list(APPEND all_cairo_private ${cairo_wgl_private})
+list(APPEND all_cairo_cxx_sources ${cairo_wgl_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_wgl_sources})
+if(CAIRO_HAS_WGL_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_wgl_headers})
+list(APPEND enabled_cairo_private ${cairo_wgl_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_wgl_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_wgl_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-wgl.pc)
+if(CAIRO_HAS_WGL_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-wgl.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_script_headers})
+list(APPEND all_cairo_headers ${cairo_script_headers})
+list(APPEND all_cairo_private ${cairo_script_private})
+list(APPEND all_cairo_cxx_sources ${cairo_script_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_script_sources})
+if(CAIRO_HAS_SCRIPT_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_script_headers})
+list(APPEND enabled_cairo_private ${cairo_script_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_script_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_script_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-script.pc)
+if(CAIRO_HAS_SCRIPT_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-script.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_ft_headers})
+list(APPEND all_cairo_headers ${cairo_ft_headers})
+list(APPEND all_cairo_private ${cairo_ft_private})
+list(APPEND all_cairo_cxx_sources ${cairo_ft_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_ft_sources})
+if(CAIRO_HAS_FT_FONT)
+list(APPEND enabled_cairo_headers ${cairo_ft_headers})
+list(APPEND enabled_cairo_private ${cairo_ft_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_ft_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_ft_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-ft.pc)
+if(CAIRO_HAS_FT_FONT)
+list(APPEND enabled_cairo_pkgconf cairo-ft.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_fc_headers})
+list(APPEND all_cairo_headers ${cairo_fc_headers})
+list(APPEND all_cairo_private ${cairo_fc_private})
+list(APPEND all_cairo_cxx_sources ${cairo_fc_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_fc_sources})
+if(CAIRO_HAS_FC_FONT)
+list(APPEND enabled_cairo_headers ${cairo_fc_headers})
+list(APPEND enabled_cairo_private ${cairo_fc_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_fc_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_fc_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-fc.pc)
+if(CAIRO_HAS_FC_FONT)
+list(APPEND enabled_cairo_pkgconf cairo-fc.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_ps_headers})
+list(APPEND all_cairo_headers ${cairo_ps_headers})
+list(APPEND all_cairo_private ${cairo_ps_private})
+list(APPEND all_cairo_cxx_sources ${cairo_ps_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_ps_sources})
+if(CAIRO_HAS_PS_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_ps_headers})
+list(APPEND enabled_cairo_private ${cairo_ps_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_ps_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_ps_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-ps.pc)
+if(CAIRO_HAS_PS_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-ps.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_pdf_headers})
+list(APPEND all_cairo_headers ${cairo_pdf_headers})
+list(APPEND all_cairo_private ${cairo_pdf_private})
+list(APPEND all_cairo_cxx_sources ${cairo_pdf_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_pdf_sources})
+if(CAIRO_HAS_PDF_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_pdf_headers})
+list(APPEND enabled_cairo_private ${cairo_pdf_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_pdf_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_pdf_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-pdf.pc)
+if(CAIRO_HAS_PDF_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-pdf.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_svg_headers})
+list(APPEND all_cairo_headers ${cairo_svg_headers})
+list(APPEND all_cairo_private ${cairo_svg_private})
+list(APPEND all_cairo_cxx_sources ${cairo_svg_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_svg_sources})
+if(CAIRO_HAS_SVG_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_svg_headers})
+list(APPEND enabled_cairo_private ${cairo_svg_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_svg_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_svg_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-svg.pc)
+if(CAIRO_HAS_SVG_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-svg.pc)
+endif()
+
+list(APPEND all_cairo_private ${cairo_test_surfaces_private} ${cairo_test_surfaces_headers})
+list(APPEND all_cairo_cxx_sources ${cairo_test_surfaces_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_test_surfaces_sources})
+if(CAIRO_HAS_TEST_SURFACES)
+list(APPEND enabled_cairo_private ${cairo_test_surfaces_private} ${cairo_test_surfaces_headers})
+list(APPEND enabled_cairo_cxx_sources ${cairo_test_surfaces_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_test_surfaces_sources})
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_image_headers})
+list(APPEND all_cairo_headers ${cairo_image_headers})
+list(APPEND all_cairo_private ${cairo_image_private})
+list(APPEND all_cairo_cxx_sources ${cairo_image_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_image_sources})
+list(APPEND enabled_cairo_headers ${cairo_image_headers})
+list(APPEND enabled_cairo_private ${cairo_image_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_image_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_image_sources})
+
+list(APPEND supported_cairo_headers ${cairo_mime_headers})
+list(APPEND all_cairo_headers ${cairo_mime_headers})
+list(APPEND all_cairo_private ${cairo_mime_private})
+list(APPEND all_cairo_cxx_sources ${cairo_mime_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_mime_sources})
+list(APPEND enabled_cairo_headers ${cairo_mime_headers})
+list(APPEND enabled_cairo_private ${cairo_mime_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_mime_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_mime_sources})
+
+list(APPEND supported_cairo_headers ${cairo_recording_headers})
+list(APPEND all_cairo_headers ${cairo_recording_headers})
+list(APPEND all_cairo_private ${cairo_recording_private})
+list(APPEND all_cairo_cxx_sources ${cairo_recording_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_recording_sources})
+list(APPEND enabled_cairo_headers ${cairo_recording_headers})
+list(APPEND enabled_cairo_private ${cairo_recording_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_recording_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_recording_sources})
+
+list(APPEND supported_cairo_headers ${cairo_observer_headers})
+list(APPEND all_cairo_headers ${cairo_observer_headers})
+list(APPEND all_cairo_private ${cairo_observer_private})
+list(APPEND all_cairo_cxx_sources ${cairo_observer_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_observer_sources})
+list(APPEND enabled_cairo_headers ${cairo_observer_headers})
+list(APPEND enabled_cairo_private ${cairo_observer_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_observer_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_observer_sources})
+
+list(APPEND unsupported_cairo_headers ${cairo_tee_headers})
+list(APPEND all_cairo_headers ${cairo_tee_headers})
+list(APPEND all_cairo_private ${cairo_tee_private})
+list(APPEND all_cairo_cxx_sources ${cairo_tee_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_tee_sources})
+if(CAIRO_HAS_TEE_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_tee_headers})
+list(APPEND enabled_cairo_private ${cairo_tee_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_tee_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_tee_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-tee.pc)
+if(CAIRO_HAS_TEE_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-tee.pc)
+endif()
+
+list(APPEND unsupported_cairo_headers ${cairo_xml_headers})
+list(APPEND all_cairo_headers ${cairo_xml_headers})
+list(APPEND all_cairo_private ${cairo_xml_private})
+list(APPEND all_cairo_cxx_sources ${cairo_xml_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_xml_sources})
+if(CAIRO_HAS_XML_SURFACE)
+list(APPEND enabled_cairo_headers ${cairo_xml_headers})
+list(APPEND enabled_cairo_private ${cairo_xml_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_xml_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_xml_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-xml.pc)
+if(CAIRO_HAS_XML_SURFACE)
+list(APPEND enabled_cairo_pkgconf cairo-xml.pc)
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_user_headers})
+list(APPEND all_cairo_headers ${cairo_user_headers})
+list(APPEND all_cairo_private ${cairo_user_private})
+list(APPEND all_cairo_cxx_sources ${cairo_user_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_user_sources})
+list(APPEND enabled_cairo_headers ${cairo_user_headers})
+list(APPEND enabled_cairo_private ${cairo_user_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_user_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_user_sources})
+
+list(APPEND all_cairo_private ${cairo_pthread_private} ${cairo_pthread_headers})
+list(APPEND all_cairo_cxx_sources ${cairo_pthread_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_pthread_sources})
+if(CAIRO_HAS_PTHREAD)
+list(APPEND enabled_cairo_private ${cairo_pthread_private} ${cairo_pthread_headers})
+list(APPEND enabled_cairo_cxx_sources ${cairo_pthread_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_pthread_sources})
+endif()
+
+list(APPEND supported_cairo_headers ${cairo_gobject_headers})
+list(APPEND all_cairo_headers ${cairo_gobject_headers})
+list(APPEND all_cairo_private ${cairo_gobject_private})
+list(APPEND all_cairo_cxx_sources ${cairo_gobject_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_gobject_sources})
+if(CAIRO_HAS_GOBJECT_FUNCTIONS)
+list(APPEND enabled_cairo_headers ${cairo_gobject_headers})
+list(APPEND enabled_cairo_private ${cairo_gobject_private})
+list(APPEND enabled_cairo_cxx_sources ${cairo_gobject_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_gobject_sources})
+endif()
+list(APPEND all_cairo_pkgconf cairo-gobject.pc)
+if(CAIRO_HAS_GOBJECT_FUNCTIONS)
+list(APPEND enabled_cairo_pkgconf cairo-gobject.pc)
+endif()
+
+list(APPEND all_cairo_private ${cairo_trace_private} ${cairo_trace_headers})
+list(APPEND all_cairo_cxx_sources ${cairo_trace_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_trace_sources})
+if(CAIRO_HAS_TRACE)
+list(APPEND enabled_cairo_private ${cairo_trace_private} ${cairo_trace_headers})
+list(APPEND enabled_cairo_cxx_sources ${cairo_trace_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_trace_sources})
+endif()
+
+list(APPEND all_cairo_private ${cairo_interpreter_private} ${cairo_interpreter_headers})
+list(APPEND all_cairo_cxx_sources ${cairo_interpreter_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_interpreter_sources})
+if(CAIRO_HAS_INTERPRETER)
+list(APPEND enabled_cairo_private ${cairo_interpreter_private} ${cairo_interpreter_headers})
+list(APPEND enabled_cairo_cxx_sources ${cairo_interpreter_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_interpreter_sources})
+endif()
+
+list(APPEND all_cairo_private ${cairo_symbol_lookup_private} ${cairo_symbol_lookup_headers})
+list(APPEND all_cairo_cxx_sources ${cairo_symbol_lookup_cxx_sources})
+list(APPEND all_cairo_sources ${cairo_symbol_lookup_sources})
+if(CAIRO_HAS_SYMBOL_LOOKUP)
+list(APPEND enabled_cairo_private ${cairo_symbol_lookup_private} ${cairo_symbol_lookup_headers})
+list(APPEND enabled_cairo_cxx_sources ${cairo_symbol_lookup_cxx_sources})
+list(APPEND enabled_cairo_sources ${cairo_symbol_lookup_sources})
+endif()
+
+set(SOURCES ${enabled_cairo_sources})
+
+add_library(cairo SHARED ${SOURCES})
+target_link_libraries(cairo ${CAIRO_LIBS})
+add_library(cairo-static ${SOURCES} ${STATIC_SOURCES})
+target_link_libraries(cairo-static ${CAIRO_LIBS})
+
+install(TARGETS cairo RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION lib)
+install(TARGETS cairo-static RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION lib)
+
+install(FILES ${enabled_cairo_headers} DESTINATION include/cairo)
+install(FILES ../cairo-version.h DESTINATION include/cairo)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/cairo-features.h DESTINATION include/cairo)
diff --git a/libs/cairo-1.16.0/src/Makefile.am b/libs/cairo-1.16.0/src/Makefile.am
new file mode 100644
index 0000000..acf0a82
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.am
@@ -0,0 +1,119 @@
+# Note: All source files are listed in Makefile.sources.
+
+include $(top_srcdir)/build/Makefile.am.common
+include $(srcdir)/Makefile.am.features
+
+EXTRA_DIST += Makefile.win32      Makefile.win32.features
+#MAINTAINERCLEANFILES += $(srcdir)/Makefile.win32.features
+
+AM_CPPFLAGS = -I$(srcdir) $(CAIRO_CFLAGS)
+AM_LDFLAGS = $(CAIRO_LDFLAGS)
+
+if OS_WIN32
+export_symbols = -export-symbols cairo.def
+cairo_def_dependency = cairo.def
+endif
+
+$(top_builddir)/config.h: $(top_srcdir)/config.h.in
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) config.h
+
+cairoincludedir = $(includedir)/cairo
+cairoinclude_HEADERS = $(enabled_cairo_headers)
+
+lib_LTLIBRARIES = libcairo.la
+
+if BUILD_CXX
+cairo_cxx_lib = libcairo_cxx.la
+else
+cairo_cxx_lib =
+endif
+
+noinst_LTLIBRARIES = $(cairo_cxx_lib)
+libcairo_cxx_la_SOURCES = \
+	$(enabled_cairo_headers) \
+	$(enabled_cairo_private) \
+	$(enabled_cairo_cxx_sources) \
+	$(NULL)
+libcairo_cxx_la_LDFLAGS = $(AM_LDFLAGS) $(export_symbols)
+libcairo_cxx_la_LIBADD = $(CAIRO_LIBS)
+libcairo_cxx_la_DEPENDENCIES = $(cairo_def_dependency)
+
+
+libcairo_la_SOURCES = \
+	$(enabled_cairo_headers) \
+	$(enabled_cairo_private) \
+	$(enabled_cairo_sources) \
+	$(NULL)
+libcairo_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(CAIRO_LIBTOOL_VERSION_INFO) -no-undefined $(export_symbols)
+libcairo_la_LIBADD = $(CAIRO_LIBS) \
+	$(cairo_cxx_lib)
+libcairo_la_DEPENDENCIES = $(cairo_def_dependency) $(cairo_cxx_lib)
+
+# Special headers
+cairoinclude_HEADERS += $(top_srcdir)/cairo-version.h
+libcairo_la_SOURCES += cairo-version.h
+nodist_cairoinclude_HEADERS = cairo-features.h
+nodist_libcairo_la_SOURCES  = cairo-features.h
+BUILT_SOURCES  += cairo-features.h cairo-supported-features.h
+DISTCLEANFILES += cairo-features.h cairo-supported-features.h
+cairo-features.h cairo-supported-features.h:
+	cd $(top_builddir) && ./config.status src/$@
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = $(enabled_cairo_pkgconf)
+
+CLEANFILES += cairo.def
+cairo.def: cairo-features.h $(enabled_cairo_headers)
+	@echo Generating $@
+	@(echo EXPORTS; \
+	(cd $(srcdir); cat $(enabled_cairo_headers) || echo 'cairo_ERROR ()' ) | \
+	$(EGREP) -v '^# *include' | \
+	( cat cairo-features.h - | $(CPP) -D__cplusplus - || echo 'cairo_ERROR ()' ) | \
+	$(EGREP) '^cairo_.* \(' | \
+	sed -e 's/[ 	].*//' | \
+	sort; \
+	echo LIBRARY libcairo-$(CAIRO_VERSION_SONUM).dll; \
+	) >$@
+	@ ! grep -q cairo_ERROR $@ || ($(RM) $@; false)
+
+TESTS_ENVIRONMENT = \
+	srcdir="$(srcdir)" \
+	MAKE="$(MAKE) $(AM_MAKEFLAGS)" \
+	all_cairo_files="$(all_cairo_files)" \
+	all_cairo_headers="$(all_cairo_headers)" \
+	all_cairo_private="$(all_cairo_private)" \
+	all_cairo_sources="$(all_cairo_sources)" \
+	enabled_cairo_headers="$(enabled_cairo_headers)" \
+	enabled_cairo_private="$(enabled_cairo_private)" \
+	enabled_cairo_sources="$(enabled_cairo_sources)" \
+	$(NULL)
+TESTS_SH = \
+	check-def.sh \
+	check-doc-syntax.sh \
+	check-headers.sh \
+	check-plt.sh \
+	check-preprocessor-syntax.sh \
+	$(NULL)
+TESTS += $(TESTS_SH)
+if CROSS_COMPILING
+else
+TESTS += check-link$(EXEEXT)
+endif
+
+EXTRA_DIST += $(TESTS_SH) check-has-hidden-symbols.c check-doc-syntax.awk
+check_PROGRAMS += check-link
+check_link_LDADD = libcairo.la
+
+check: headers-standalone
+
+PREPROCESS_ARGS = $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS)
+COMPILE_ARGS = $(PREPROCESS_ARGS) $(AM_CFLAGS) $(CFLAGS)
+
+# The pre-processed result is used by check-{def,plt}.sh to determine whether
+# cairo has been compiled with symbol hiding.
+.c.i: $(cairoinclude_HEADERS) $(nodist_cairoinclude_HEADERS) cairoint.h $(top_builddir)/config.h
+	$(CPP) $(PREPROCESS_ARGS) $< -o $@
+.c.s: $(cairoinclude_HEADERS) $(nodist_cairoinclude_HEADERS) cairoint.h $(top_builddir)/config.h
+	$(CC) $(COMPILE_ARGS) $< -S -o $@
+
+include $(srcdir)/Makefile.am.analysis
diff --git a/libs/cairo-1.16.0/src/Makefile.am.analysis b/libs/cairo-1.16.0/src/Makefile.am.analysis
new file mode 100644
index 0000000..fab4cf7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.am.analysis
@@ -0,0 +1,35 @@
+
+SPARSE = sparse
+sparse:
+	@echo Checking enabled sources with sparse checker
+	@status=true; for f in $(enabled_cairo_sources) $(enabled_cairo_cxx_sources); do \
+		echo $(SPARSE) $(PREPROCESS_ARGS) $(srcdir)/$$f; \
+		$(SPARSE) $(PREPROCESS_ARGS) $(srcdir)/$$f || status=false; \
+	done; $$status
+
+SPLINT = splint -badflag
+splint:
+	@echo Checking enabled sources with splint checker
+	@status=true; for f in $(enabled_cairo_sources) $(enabled_cairo_cxx_sources); do \
+		echo $(SPLINT) $(PREPROCESS_ARGS) $(srcdir)/$$f; \
+		$(SPLINT) $(PREPROCESS_ARGS) $(srcdir)/$$f || status=false; \
+	done; $$status
+
+UNO = uno
+uno:
+	@echo Checking enabled sources with uno checker
+	cd $(srcdir); $(UNO) $(PREPROCESS_ARGS) -DHAVE_CONFIG_H -U__GNUC__ $(enabled_cairo_sources)
+
+headers-standalone: $(enabled_cairo_headers) $(enabled_cairo_private)
+	@echo Checking that enabled public/private headers can be compiled standalone
+	@status=true; for f in $(enabled_cairo_headers) $(enabled_cairo_private); do \
+		echo "  CHECK $$f"; \
+		echo "#include \"$(srcdir)/$$f\"" > headers-standalone-tmp.c; \
+		echo "int main(int argc, char * argv[]) { return 0; }" >> headers-standalone-tmp.c; \
+		$(COMPILE) -o headers-standalone-tmp headers-standalone-tmp.c || status=false; \
+		$(RM) headers-standalone-tmp headers-standalone-tmp.c; \
+	done; $$status
+	@touch $@
+CLEANFILES += headers-standalone
+
+analysis: all headers-standalone sparse splint uno
diff --git a/libs/cairo-1.16.0/src/Makefile.am.features b/libs/cairo-1.16.0/src/Makefile.am.features
new file mode 100644
index 0000000..47c95db
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.am.features
@@ -0,0 +1,657 @@
+# Generated by configure.  Do not edit.
+
+include $(top_srcdir)/src/Makefile.sources
+
+supported_cairo_headers = $(cairo_headers)
+unsupported_cairo_headers =
+all_cairo_headers = $(cairo_headers)
+all_cairo_private = $(cairo_private)
+all_cairo_cxx_sources = $(cairo_cxx_sources)
+all_cairo_sources = $(cairo_sources)
+
+enabled_cairo_headers = $(cairo_headers)
+enabled_cairo_private = $(cairo_private)
+enabled_cairo_cxx_sources = $(cairo_cxx_sources)
+enabled_cairo_sources = $(cairo_sources)
+
+all_cairo_pkgconf = cairo.pc
+enabled_cairo_pkgconf = cairo.pc
+
+supported_cairo_headers += $(cairo_xlib_headers)
+all_cairo_headers += $(cairo_xlib_headers)
+all_cairo_private += $(cairo_xlib_private)
+all_cairo_cxx_sources += $(cairo_xlib_cxx_sources)
+all_cairo_sources += $(cairo_xlib_sources)
+if CAIRO_HAS_XLIB_SURFACE
+enabled_cairo_headers += $(cairo_xlib_headers)
+enabled_cairo_private += $(cairo_xlib_private)
+enabled_cairo_cxx_sources += $(cairo_xlib_cxx_sources)
+enabled_cairo_sources += $(cairo_xlib_sources)
+endif
+all_cairo_pkgconf += cairo-xlib.pc
+if CAIRO_HAS_XLIB_SURFACE
+enabled_cairo_pkgconf += cairo-xlib.pc
+endif
+
+supported_cairo_headers += $(cairo_xlib_xrender_headers)
+all_cairo_headers += $(cairo_xlib_xrender_headers)
+all_cairo_private += $(cairo_xlib_xrender_private)
+all_cairo_cxx_sources += $(cairo_xlib_xrender_cxx_sources)
+all_cairo_sources += $(cairo_xlib_xrender_sources)
+if CAIRO_HAS_XLIB_XRENDER_SURFACE
+enabled_cairo_headers += $(cairo_xlib_xrender_headers)
+enabled_cairo_private += $(cairo_xlib_xrender_private)
+enabled_cairo_cxx_sources += $(cairo_xlib_xrender_cxx_sources)
+enabled_cairo_sources += $(cairo_xlib_xrender_sources)
+endif
+all_cairo_pkgconf += cairo-xlib-xrender.pc
+if CAIRO_HAS_XLIB_XRENDER_SURFACE
+enabled_cairo_pkgconf += cairo-xlib-xrender.pc
+endif
+
+supported_cairo_headers += $(cairo_xcb_headers)
+all_cairo_headers += $(cairo_xcb_headers)
+all_cairo_private += $(cairo_xcb_private)
+all_cairo_cxx_sources += $(cairo_xcb_cxx_sources)
+all_cairo_sources += $(cairo_xcb_sources)
+if CAIRO_HAS_XCB_SURFACE
+enabled_cairo_headers += $(cairo_xcb_headers)
+enabled_cairo_private += $(cairo_xcb_private)
+enabled_cairo_cxx_sources += $(cairo_xcb_cxx_sources)
+enabled_cairo_sources += $(cairo_xcb_sources)
+endif
+all_cairo_pkgconf += cairo-xcb.pc
+if CAIRO_HAS_XCB_SURFACE
+enabled_cairo_pkgconf += cairo-xcb.pc
+endif
+
+unsupported_cairo_headers += $(cairo_xlib_xcb_headers)
+all_cairo_headers += $(cairo_xlib_xcb_headers)
+all_cairo_private += $(cairo_xlib_xcb_private)
+all_cairo_cxx_sources += $(cairo_xlib_xcb_cxx_sources)
+all_cairo_sources += $(cairo_xlib_xcb_sources)
+if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+enabled_cairo_headers += $(cairo_xlib_xcb_headers)
+enabled_cairo_private += $(cairo_xlib_xcb_private)
+enabled_cairo_cxx_sources += $(cairo_xlib_xcb_cxx_sources)
+enabled_cairo_sources += $(cairo_xlib_xcb_sources)
+endif
+all_cairo_pkgconf += cairo-xlib-xcb.pc
+if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+enabled_cairo_pkgconf += cairo-xlib-xcb.pc
+endif
+
+supported_cairo_headers += $(cairo_xcb_shm_headers)
+all_cairo_headers += $(cairo_xcb_shm_headers)
+all_cairo_private += $(cairo_xcb_shm_private)
+all_cairo_cxx_sources += $(cairo_xcb_shm_cxx_sources)
+all_cairo_sources += $(cairo_xcb_shm_sources)
+if CAIRO_HAS_XCB_SHM_FUNCTIONS
+enabled_cairo_headers += $(cairo_xcb_shm_headers)
+enabled_cairo_private += $(cairo_xcb_shm_private)
+enabled_cairo_cxx_sources += $(cairo_xcb_shm_cxx_sources)
+enabled_cairo_sources += $(cairo_xcb_shm_sources)
+endif
+all_cairo_pkgconf += cairo-xcb-shm.pc
+if CAIRO_HAS_XCB_SHM_FUNCTIONS
+enabled_cairo_pkgconf += cairo-xcb-shm.pc
+endif
+
+unsupported_cairo_headers += $(cairo_qt_headers)
+all_cairo_headers += $(cairo_qt_headers)
+all_cairo_private += $(cairo_qt_private)
+all_cairo_cxx_sources += $(cairo_qt_cxx_sources)
+all_cairo_sources += $(cairo_qt_sources)
+if CAIRO_HAS_QT_SURFACE
+enabled_cairo_headers += $(cairo_qt_headers)
+enabled_cairo_private += $(cairo_qt_private)
+enabled_cairo_cxx_sources += $(cairo_qt_cxx_sources)
+enabled_cairo_sources += $(cairo_qt_sources)
+endif
+all_cairo_pkgconf += cairo-qt.pc
+if CAIRO_HAS_QT_SURFACE
+enabled_cairo_pkgconf += cairo-qt.pc
+endif
+
+supported_cairo_headers += $(cairo_quartz_headers)
+all_cairo_headers += $(cairo_quartz_headers)
+all_cairo_private += $(cairo_quartz_private)
+all_cairo_cxx_sources += $(cairo_quartz_cxx_sources)
+all_cairo_sources += $(cairo_quartz_sources)
+if CAIRO_HAS_QUARTZ_SURFACE
+enabled_cairo_headers += $(cairo_quartz_headers)
+enabled_cairo_private += $(cairo_quartz_private)
+enabled_cairo_cxx_sources += $(cairo_quartz_cxx_sources)
+enabled_cairo_sources += $(cairo_quartz_sources)
+endif
+all_cairo_pkgconf += cairo-quartz.pc
+if CAIRO_HAS_QUARTZ_SURFACE
+enabled_cairo_pkgconf += cairo-quartz.pc
+endif
+
+supported_cairo_headers += $(cairo_quartz_font_headers)
+all_cairo_headers += $(cairo_quartz_font_headers)
+all_cairo_private += $(cairo_quartz_font_private)
+all_cairo_cxx_sources += $(cairo_quartz_font_cxx_sources)
+all_cairo_sources += $(cairo_quartz_font_sources)
+if CAIRO_HAS_QUARTZ_FONT
+enabled_cairo_headers += $(cairo_quartz_font_headers)
+enabled_cairo_private += $(cairo_quartz_font_private)
+enabled_cairo_cxx_sources += $(cairo_quartz_font_cxx_sources)
+enabled_cairo_sources += $(cairo_quartz_font_sources)
+endif
+all_cairo_pkgconf += cairo-quartz-font.pc
+if CAIRO_HAS_QUARTZ_FONT
+enabled_cairo_pkgconf += cairo-quartz-font.pc
+endif
+
+unsupported_cairo_headers += $(cairo_quartz_image_headers)
+all_cairo_headers += $(cairo_quartz_image_headers)
+all_cairo_private += $(cairo_quartz_image_private)
+all_cairo_cxx_sources += $(cairo_quartz_image_cxx_sources)
+all_cairo_sources += $(cairo_quartz_image_sources)
+if CAIRO_HAS_QUARTZ_IMAGE_SURFACE
+enabled_cairo_headers += $(cairo_quartz_image_headers)
+enabled_cairo_private += $(cairo_quartz_image_private)
+enabled_cairo_cxx_sources += $(cairo_quartz_image_cxx_sources)
+enabled_cairo_sources += $(cairo_quartz_image_sources)
+endif
+all_cairo_pkgconf += cairo-quartz-image.pc
+if CAIRO_HAS_QUARTZ_IMAGE_SURFACE
+enabled_cairo_pkgconf += cairo-quartz-image.pc
+endif
+
+supported_cairo_headers += $(cairo_win32_headers)
+all_cairo_headers += $(cairo_win32_headers)
+all_cairo_private += $(cairo_win32_private)
+all_cairo_cxx_sources += $(cairo_win32_cxx_sources)
+all_cairo_sources += $(cairo_win32_sources)
+if CAIRO_HAS_WIN32_SURFACE
+enabled_cairo_headers += $(cairo_win32_headers)
+enabled_cairo_private += $(cairo_win32_private)
+enabled_cairo_cxx_sources += $(cairo_win32_cxx_sources)
+enabled_cairo_sources += $(cairo_win32_sources)
+endif
+all_cairo_pkgconf += cairo-win32.pc
+if CAIRO_HAS_WIN32_SURFACE
+enabled_cairo_pkgconf += cairo-win32.pc
+endif
+
+supported_cairo_headers += $(cairo_win32_font_headers)
+all_cairo_headers += $(cairo_win32_font_headers)
+all_cairo_private += $(cairo_win32_font_private)
+all_cairo_cxx_sources += $(cairo_win32_font_cxx_sources)
+all_cairo_sources += $(cairo_win32_font_sources)
+if CAIRO_HAS_WIN32_FONT
+enabled_cairo_headers += $(cairo_win32_font_headers)
+enabled_cairo_private += $(cairo_win32_font_private)
+enabled_cairo_cxx_sources += $(cairo_win32_font_cxx_sources)
+enabled_cairo_sources += $(cairo_win32_font_sources)
+endif
+all_cairo_pkgconf += cairo-win32-font.pc
+if CAIRO_HAS_WIN32_FONT
+enabled_cairo_pkgconf += cairo-win32-font.pc
+endif
+
+unsupported_cairo_headers += $(cairo_os2_headers)
+all_cairo_headers += $(cairo_os2_headers)
+all_cairo_private += $(cairo_os2_private)
+all_cairo_cxx_sources += $(cairo_os2_cxx_sources)
+all_cairo_sources += $(cairo_os2_sources)
+if CAIRO_HAS_OS2_SURFACE
+enabled_cairo_headers += $(cairo_os2_headers)
+enabled_cairo_private += $(cairo_os2_private)
+enabled_cairo_cxx_sources += $(cairo_os2_cxx_sources)
+enabled_cairo_sources += $(cairo_os2_sources)
+endif
+all_cairo_pkgconf += cairo-os2.pc
+if CAIRO_HAS_OS2_SURFACE
+enabled_cairo_pkgconf += cairo-os2.pc
+endif
+
+unsupported_cairo_headers += $(cairo_beos_headers)
+all_cairo_headers += $(cairo_beos_headers)
+all_cairo_private += $(cairo_beos_private)
+all_cairo_cxx_sources += $(cairo_beos_cxx_sources)
+all_cairo_sources += $(cairo_beos_sources)
+if CAIRO_HAS_BEOS_SURFACE
+enabled_cairo_headers += $(cairo_beos_headers)
+enabled_cairo_private += $(cairo_beos_private)
+enabled_cairo_cxx_sources += $(cairo_beos_cxx_sources)
+enabled_cairo_sources += $(cairo_beos_sources)
+endif
+all_cairo_pkgconf += cairo-beos.pc
+if CAIRO_HAS_BEOS_SURFACE
+enabled_cairo_pkgconf += cairo-beos.pc
+endif
+
+unsupported_cairo_headers += $(cairo_drm_headers)
+all_cairo_headers += $(cairo_drm_headers)
+all_cairo_private += $(cairo_drm_private)
+all_cairo_cxx_sources += $(cairo_drm_cxx_sources)
+all_cairo_sources += $(cairo_drm_sources)
+if CAIRO_HAS_DRM_SURFACE
+enabled_cairo_headers += $(cairo_drm_headers)
+enabled_cairo_private += $(cairo_drm_private)
+enabled_cairo_cxx_sources += $(cairo_drm_cxx_sources)
+enabled_cairo_sources += $(cairo_drm_sources)
+endif
+all_cairo_pkgconf += cairo-drm.pc
+if CAIRO_HAS_DRM_SURFACE
+enabled_cairo_pkgconf += cairo-drm.pc
+endif
+
+unsupported_cairo_headers += $(cairo_gallium_headers)
+all_cairo_headers += $(cairo_gallium_headers)
+all_cairo_private += $(cairo_gallium_private)
+all_cairo_cxx_sources += $(cairo_gallium_cxx_sources)
+all_cairo_sources += $(cairo_gallium_sources)
+if CAIRO_HAS_GALLIUM_SURFACE
+enabled_cairo_headers += $(cairo_gallium_headers)
+enabled_cairo_private += $(cairo_gallium_private)
+enabled_cairo_cxx_sources += $(cairo_gallium_cxx_sources)
+enabled_cairo_sources += $(cairo_gallium_sources)
+endif
+all_cairo_pkgconf += cairo-gallium.pc
+if CAIRO_HAS_GALLIUM_SURFACE
+enabled_cairo_pkgconf += cairo-gallium.pc
+endif
+
+supported_cairo_headers += $(cairo_png_headers)
+all_cairo_headers += $(cairo_png_headers)
+all_cairo_private += $(cairo_png_private)
+all_cairo_cxx_sources += $(cairo_png_cxx_sources)
+all_cairo_sources += $(cairo_png_sources)
+if CAIRO_HAS_PNG_FUNCTIONS
+enabled_cairo_headers += $(cairo_png_headers)
+enabled_cairo_private += $(cairo_png_private)
+enabled_cairo_cxx_sources += $(cairo_png_cxx_sources)
+enabled_cairo_sources += $(cairo_png_sources)
+endif
+all_cairo_pkgconf += cairo-png.pc
+if CAIRO_HAS_PNG_FUNCTIONS
+enabled_cairo_pkgconf += cairo-png.pc
+endif
+
+unsupported_cairo_headers += $(cairo_gl_headers)
+all_cairo_headers += $(cairo_gl_headers)
+all_cairo_private += $(cairo_gl_private)
+all_cairo_cxx_sources += $(cairo_gl_cxx_sources)
+all_cairo_sources += $(cairo_gl_sources)
+if CAIRO_HAS_GL_SURFACE
+enabled_cairo_headers += $(cairo_gl_headers)
+enabled_cairo_private += $(cairo_gl_private)
+enabled_cairo_cxx_sources += $(cairo_gl_cxx_sources)
+enabled_cairo_sources += $(cairo_gl_sources)
+endif
+all_cairo_pkgconf += cairo-gl.pc
+if CAIRO_HAS_GL_SURFACE
+enabled_cairo_pkgconf += cairo-gl.pc
+endif
+
+unsupported_cairo_headers += $(cairo_glesv2_headers)
+all_cairo_headers += $(cairo_glesv2_headers)
+all_cairo_private += $(cairo_glesv2_private)
+all_cairo_cxx_sources += $(cairo_glesv2_cxx_sources)
+all_cairo_sources += $(cairo_glesv2_sources)
+if CAIRO_HAS_GLESV2_SURFACE
+enabled_cairo_headers += $(cairo_glesv2_headers)
+enabled_cairo_private += $(cairo_glesv2_private)
+enabled_cairo_cxx_sources += $(cairo_glesv2_cxx_sources)
+enabled_cairo_sources += $(cairo_glesv2_sources)
+endif
+all_cairo_pkgconf += cairo-glesv2.pc
+if CAIRO_HAS_GLESV2_SURFACE
+enabled_cairo_pkgconf += cairo-glesv2.pc
+endif
+
+unsupported_cairo_headers += $(cairo_glesv3_headers)
+all_cairo_headers += $(cairo_glesv3_headers)
+all_cairo_private += $(cairo_glesv3_private)
+all_cairo_cxx_sources += $(cairo_glesv3_cxx_sources)
+all_cairo_sources += $(cairo_glesv3_sources)
+if CAIRO_HAS_GLESV3_SURFACE
+enabled_cairo_headers += $(cairo_glesv3_headers)
+enabled_cairo_private += $(cairo_glesv3_private)
+enabled_cairo_cxx_sources += $(cairo_glesv3_cxx_sources)
+enabled_cairo_sources += $(cairo_glesv3_sources)
+endif
+all_cairo_pkgconf += cairo-glesv3.pc
+if CAIRO_HAS_GLESV3_SURFACE
+enabled_cairo_pkgconf += cairo-glesv3.pc
+endif
+
+unsupported_cairo_headers += $(cairo_cogl_headers)
+all_cairo_headers += $(cairo_cogl_headers)
+all_cairo_private += $(cairo_cogl_private)
+all_cairo_cxx_sources += $(cairo_cogl_cxx_sources)
+all_cairo_sources += $(cairo_cogl_sources)
+if CAIRO_HAS_COGL_SURFACE
+enabled_cairo_headers += $(cairo_cogl_headers)
+enabled_cairo_private += $(cairo_cogl_private)
+enabled_cairo_cxx_sources += $(cairo_cogl_cxx_sources)
+enabled_cairo_sources += $(cairo_cogl_sources)
+endif
+all_cairo_pkgconf += cairo-cogl.pc
+if CAIRO_HAS_COGL_SURFACE
+enabled_cairo_pkgconf += cairo-cogl.pc
+endif
+
+unsupported_cairo_headers += $(cairo_directfb_headers)
+all_cairo_headers += $(cairo_directfb_headers)
+all_cairo_private += $(cairo_directfb_private)
+all_cairo_cxx_sources += $(cairo_directfb_cxx_sources)
+all_cairo_sources += $(cairo_directfb_sources)
+if CAIRO_HAS_DIRECTFB_SURFACE
+enabled_cairo_headers += $(cairo_directfb_headers)
+enabled_cairo_private += $(cairo_directfb_private)
+enabled_cairo_cxx_sources += $(cairo_directfb_cxx_sources)
+enabled_cairo_sources += $(cairo_directfb_sources)
+endif
+all_cairo_pkgconf += cairo-directfb.pc
+if CAIRO_HAS_DIRECTFB_SURFACE
+enabled_cairo_pkgconf += cairo-directfb.pc
+endif
+
+unsupported_cairo_headers += $(cairo_vg_headers)
+all_cairo_headers += $(cairo_vg_headers)
+all_cairo_private += $(cairo_vg_private)
+all_cairo_cxx_sources += $(cairo_vg_cxx_sources)
+all_cairo_sources += $(cairo_vg_sources)
+if CAIRO_HAS_VG_SURFACE
+enabled_cairo_headers += $(cairo_vg_headers)
+enabled_cairo_private += $(cairo_vg_private)
+enabled_cairo_cxx_sources += $(cairo_vg_cxx_sources)
+enabled_cairo_sources += $(cairo_vg_sources)
+endif
+all_cairo_pkgconf += cairo-vg.pc
+if CAIRO_HAS_VG_SURFACE
+enabled_cairo_pkgconf += cairo-vg.pc
+endif
+
+supported_cairo_headers += $(cairo_egl_headers)
+all_cairo_headers += $(cairo_egl_headers)
+all_cairo_private += $(cairo_egl_private)
+all_cairo_cxx_sources += $(cairo_egl_cxx_sources)
+all_cairo_sources += $(cairo_egl_sources)
+if CAIRO_HAS_EGL_FUNCTIONS
+enabled_cairo_headers += $(cairo_egl_headers)
+enabled_cairo_private += $(cairo_egl_private)
+enabled_cairo_cxx_sources += $(cairo_egl_cxx_sources)
+enabled_cairo_sources += $(cairo_egl_sources)
+endif
+all_cairo_pkgconf += cairo-egl.pc
+if CAIRO_HAS_EGL_FUNCTIONS
+enabled_cairo_pkgconf += cairo-egl.pc
+endif
+
+supported_cairo_headers += $(cairo_glx_headers)
+all_cairo_headers += $(cairo_glx_headers)
+all_cairo_private += $(cairo_glx_private)
+all_cairo_cxx_sources += $(cairo_glx_cxx_sources)
+all_cairo_sources += $(cairo_glx_sources)
+if CAIRO_HAS_GLX_FUNCTIONS
+enabled_cairo_headers += $(cairo_glx_headers)
+enabled_cairo_private += $(cairo_glx_private)
+enabled_cairo_cxx_sources += $(cairo_glx_cxx_sources)
+enabled_cairo_sources += $(cairo_glx_sources)
+endif
+all_cairo_pkgconf += cairo-glx.pc
+if CAIRO_HAS_GLX_FUNCTIONS
+enabled_cairo_pkgconf += cairo-glx.pc
+endif
+
+supported_cairo_headers += $(cairo_wgl_headers)
+all_cairo_headers += $(cairo_wgl_headers)
+all_cairo_private += $(cairo_wgl_private)
+all_cairo_cxx_sources += $(cairo_wgl_cxx_sources)
+all_cairo_sources += $(cairo_wgl_sources)
+if CAIRO_HAS_WGL_FUNCTIONS
+enabled_cairo_headers += $(cairo_wgl_headers)
+enabled_cairo_private += $(cairo_wgl_private)
+enabled_cairo_cxx_sources += $(cairo_wgl_cxx_sources)
+enabled_cairo_sources += $(cairo_wgl_sources)
+endif
+all_cairo_pkgconf += cairo-wgl.pc
+if CAIRO_HAS_WGL_FUNCTIONS
+enabled_cairo_pkgconf += cairo-wgl.pc
+endif
+
+supported_cairo_headers += $(cairo_script_headers)
+all_cairo_headers += $(cairo_script_headers)
+all_cairo_private += $(cairo_script_private)
+all_cairo_cxx_sources += $(cairo_script_cxx_sources)
+all_cairo_sources += $(cairo_script_sources)
+if CAIRO_HAS_SCRIPT_SURFACE
+enabled_cairo_headers += $(cairo_script_headers)
+enabled_cairo_private += $(cairo_script_private)
+enabled_cairo_cxx_sources += $(cairo_script_cxx_sources)
+enabled_cairo_sources += $(cairo_script_sources)
+endif
+all_cairo_pkgconf += cairo-script.pc
+if CAIRO_HAS_SCRIPT_SURFACE
+enabled_cairo_pkgconf += cairo-script.pc
+endif
+
+supported_cairo_headers += $(cairo_ft_headers)
+all_cairo_headers += $(cairo_ft_headers)
+all_cairo_private += $(cairo_ft_private)
+all_cairo_cxx_sources += $(cairo_ft_cxx_sources)
+all_cairo_sources += $(cairo_ft_sources)
+if CAIRO_HAS_FT_FONT
+enabled_cairo_headers += $(cairo_ft_headers)
+enabled_cairo_private += $(cairo_ft_private)
+enabled_cairo_cxx_sources += $(cairo_ft_cxx_sources)
+enabled_cairo_sources += $(cairo_ft_sources)
+endif
+all_cairo_pkgconf += cairo-ft.pc
+if CAIRO_HAS_FT_FONT
+enabled_cairo_pkgconf += cairo-ft.pc
+endif
+
+supported_cairo_headers += $(cairo_fc_headers)
+all_cairo_headers += $(cairo_fc_headers)
+all_cairo_private += $(cairo_fc_private)
+all_cairo_cxx_sources += $(cairo_fc_cxx_sources)
+all_cairo_sources += $(cairo_fc_sources)
+if CAIRO_HAS_FC_FONT
+enabled_cairo_headers += $(cairo_fc_headers)
+enabled_cairo_private += $(cairo_fc_private)
+enabled_cairo_cxx_sources += $(cairo_fc_cxx_sources)
+enabled_cairo_sources += $(cairo_fc_sources)
+endif
+all_cairo_pkgconf += cairo-fc.pc
+if CAIRO_HAS_FC_FONT
+enabled_cairo_pkgconf += cairo-fc.pc
+endif
+
+supported_cairo_headers += $(cairo_ps_headers)
+all_cairo_headers += $(cairo_ps_headers)
+all_cairo_private += $(cairo_ps_private)
+all_cairo_cxx_sources += $(cairo_ps_cxx_sources)
+all_cairo_sources += $(cairo_ps_sources)
+if CAIRO_HAS_PS_SURFACE
+enabled_cairo_headers += $(cairo_ps_headers)
+enabled_cairo_private += $(cairo_ps_private)
+enabled_cairo_cxx_sources += $(cairo_ps_cxx_sources)
+enabled_cairo_sources += $(cairo_ps_sources)
+endif
+all_cairo_pkgconf += cairo-ps.pc
+if CAIRO_HAS_PS_SURFACE
+enabled_cairo_pkgconf += cairo-ps.pc
+endif
+
+supported_cairo_headers += $(cairo_pdf_headers)
+all_cairo_headers += $(cairo_pdf_headers)
+all_cairo_private += $(cairo_pdf_private)
+all_cairo_cxx_sources += $(cairo_pdf_cxx_sources)
+all_cairo_sources += $(cairo_pdf_sources)
+if CAIRO_HAS_PDF_SURFACE
+enabled_cairo_headers += $(cairo_pdf_headers)
+enabled_cairo_private += $(cairo_pdf_private)
+enabled_cairo_cxx_sources += $(cairo_pdf_cxx_sources)
+enabled_cairo_sources += $(cairo_pdf_sources)
+endif
+all_cairo_pkgconf += cairo-pdf.pc
+if CAIRO_HAS_PDF_SURFACE
+enabled_cairo_pkgconf += cairo-pdf.pc
+endif
+
+supported_cairo_headers += $(cairo_svg_headers)
+all_cairo_headers += $(cairo_svg_headers)
+all_cairo_private += $(cairo_svg_private)
+all_cairo_cxx_sources += $(cairo_svg_cxx_sources)
+all_cairo_sources += $(cairo_svg_sources)
+if CAIRO_HAS_SVG_SURFACE
+enabled_cairo_headers += $(cairo_svg_headers)
+enabled_cairo_private += $(cairo_svg_private)
+enabled_cairo_cxx_sources += $(cairo_svg_cxx_sources)
+enabled_cairo_sources += $(cairo_svg_sources)
+endif
+all_cairo_pkgconf += cairo-svg.pc
+if CAIRO_HAS_SVG_SURFACE
+enabled_cairo_pkgconf += cairo-svg.pc
+endif
+
+all_cairo_private += $(cairo_test_surfaces_private) $(cairo_test_surfaces_headers)
+all_cairo_cxx_sources += $(cairo_test_surfaces_cxx_sources)
+all_cairo_sources += $(cairo_test_surfaces_sources)
+if CAIRO_HAS_TEST_SURFACES
+enabled_cairo_private += $(cairo_test_surfaces_private) $(cairo_test_surfaces_headers)
+enabled_cairo_cxx_sources += $(cairo_test_surfaces_cxx_sources)
+enabled_cairo_sources += $(cairo_test_surfaces_sources)
+endif
+
+supported_cairo_headers += $(cairo_image_headers)
+all_cairo_headers += $(cairo_image_headers)
+all_cairo_private += $(cairo_image_private)
+all_cairo_cxx_sources += $(cairo_image_cxx_sources)
+all_cairo_sources += $(cairo_image_sources)
+enabled_cairo_headers += $(cairo_image_headers)
+enabled_cairo_private += $(cairo_image_private)
+enabled_cairo_cxx_sources += $(cairo_image_cxx_sources)
+enabled_cairo_sources += $(cairo_image_sources)
+
+supported_cairo_headers += $(cairo_mime_headers)
+all_cairo_headers += $(cairo_mime_headers)
+all_cairo_private += $(cairo_mime_private)
+all_cairo_cxx_sources += $(cairo_mime_cxx_sources)
+all_cairo_sources += $(cairo_mime_sources)
+enabled_cairo_headers += $(cairo_mime_headers)
+enabled_cairo_private += $(cairo_mime_private)
+enabled_cairo_cxx_sources += $(cairo_mime_cxx_sources)
+enabled_cairo_sources += $(cairo_mime_sources)
+
+supported_cairo_headers += $(cairo_recording_headers)
+all_cairo_headers += $(cairo_recording_headers)
+all_cairo_private += $(cairo_recording_private)
+all_cairo_cxx_sources += $(cairo_recording_cxx_sources)
+all_cairo_sources += $(cairo_recording_sources)
+enabled_cairo_headers += $(cairo_recording_headers)
+enabled_cairo_private += $(cairo_recording_private)
+enabled_cairo_cxx_sources += $(cairo_recording_cxx_sources)
+enabled_cairo_sources += $(cairo_recording_sources)
+
+supported_cairo_headers += $(cairo_observer_headers)
+all_cairo_headers += $(cairo_observer_headers)
+all_cairo_private += $(cairo_observer_private)
+all_cairo_cxx_sources += $(cairo_observer_cxx_sources)
+all_cairo_sources += $(cairo_observer_sources)
+enabled_cairo_headers += $(cairo_observer_headers)
+enabled_cairo_private += $(cairo_observer_private)
+enabled_cairo_cxx_sources += $(cairo_observer_cxx_sources)
+enabled_cairo_sources += $(cairo_observer_sources)
+
+unsupported_cairo_headers += $(cairo_tee_headers)
+all_cairo_headers += $(cairo_tee_headers)
+all_cairo_private += $(cairo_tee_private)
+all_cairo_cxx_sources += $(cairo_tee_cxx_sources)
+all_cairo_sources += $(cairo_tee_sources)
+if CAIRO_HAS_TEE_SURFACE
+enabled_cairo_headers += $(cairo_tee_headers)
+enabled_cairo_private += $(cairo_tee_private)
+enabled_cairo_cxx_sources += $(cairo_tee_cxx_sources)
+enabled_cairo_sources += $(cairo_tee_sources)
+endif
+all_cairo_pkgconf += cairo-tee.pc
+if CAIRO_HAS_TEE_SURFACE
+enabled_cairo_pkgconf += cairo-tee.pc
+endif
+
+unsupported_cairo_headers += $(cairo_xml_headers)
+all_cairo_headers += $(cairo_xml_headers)
+all_cairo_private += $(cairo_xml_private)
+all_cairo_cxx_sources += $(cairo_xml_cxx_sources)
+all_cairo_sources += $(cairo_xml_sources)
+if CAIRO_HAS_XML_SURFACE
+enabled_cairo_headers += $(cairo_xml_headers)
+enabled_cairo_private += $(cairo_xml_private)
+enabled_cairo_cxx_sources += $(cairo_xml_cxx_sources)
+enabled_cairo_sources += $(cairo_xml_sources)
+endif
+all_cairo_pkgconf += cairo-xml.pc
+if CAIRO_HAS_XML_SURFACE
+enabled_cairo_pkgconf += cairo-xml.pc
+endif
+
+supported_cairo_headers += $(cairo_user_headers)
+all_cairo_headers += $(cairo_user_headers)
+all_cairo_private += $(cairo_user_private)
+all_cairo_cxx_sources += $(cairo_user_cxx_sources)
+all_cairo_sources += $(cairo_user_sources)
+enabled_cairo_headers += $(cairo_user_headers)
+enabled_cairo_private += $(cairo_user_private)
+enabled_cairo_cxx_sources += $(cairo_user_cxx_sources)
+enabled_cairo_sources += $(cairo_user_sources)
+
+all_cairo_private += $(cairo_pthread_private) $(cairo_pthread_headers)
+all_cairo_cxx_sources += $(cairo_pthread_cxx_sources)
+all_cairo_sources += $(cairo_pthread_sources)
+if CAIRO_HAS_PTHREAD
+enabled_cairo_private += $(cairo_pthread_private) $(cairo_pthread_headers)
+enabled_cairo_cxx_sources += $(cairo_pthread_cxx_sources)
+enabled_cairo_sources += $(cairo_pthread_sources)
+endif
+
+supported_cairo_headers += $(cairo_gobject_headers)
+all_cairo_headers += $(cairo_gobject_headers)
+all_cairo_private += $(cairo_gobject_private)
+all_cairo_cxx_sources += $(cairo_gobject_cxx_sources)
+all_cairo_sources += $(cairo_gobject_sources)
+if CAIRO_HAS_GOBJECT_FUNCTIONS
+enabled_cairo_headers += $(cairo_gobject_headers)
+enabled_cairo_private += $(cairo_gobject_private)
+enabled_cairo_cxx_sources += $(cairo_gobject_cxx_sources)
+enabled_cairo_sources += $(cairo_gobject_sources)
+endif
+all_cairo_pkgconf += cairo-gobject.pc
+if CAIRO_HAS_GOBJECT_FUNCTIONS
+enabled_cairo_pkgconf += cairo-gobject.pc
+endif
+
+all_cairo_private += $(cairo_trace_private) $(cairo_trace_headers)
+all_cairo_cxx_sources += $(cairo_trace_cxx_sources)
+all_cairo_sources += $(cairo_trace_sources)
+if CAIRO_HAS_TRACE
+enabled_cairo_private += $(cairo_trace_private) $(cairo_trace_headers)
+enabled_cairo_cxx_sources += $(cairo_trace_cxx_sources)
+enabled_cairo_sources += $(cairo_trace_sources)
+endif
+
+all_cairo_private += $(cairo_interpreter_private) $(cairo_interpreter_headers)
+all_cairo_cxx_sources += $(cairo_interpreter_cxx_sources)
+all_cairo_sources += $(cairo_interpreter_sources)
+if CAIRO_HAS_INTERPRETER
+enabled_cairo_private += $(cairo_interpreter_private) $(cairo_interpreter_headers)
+enabled_cairo_cxx_sources += $(cairo_interpreter_cxx_sources)
+enabled_cairo_sources += $(cairo_interpreter_sources)
+endif
+
+all_cairo_private += $(cairo_symbol_lookup_private) $(cairo_symbol_lookup_headers)
+all_cairo_cxx_sources += $(cairo_symbol_lookup_cxx_sources)
+all_cairo_sources += $(cairo_symbol_lookup_sources)
+if CAIRO_HAS_SYMBOL_LOOKUP
+enabled_cairo_private += $(cairo_symbol_lookup_private) $(cairo_symbol_lookup_headers)
+enabled_cairo_cxx_sources += $(cairo_symbol_lookup_cxx_sources)
+enabled_cairo_sources += $(cairo_symbol_lookup_sources)
+endif
diff --git a/libs/cairo-1.16.0/src/Makefile.in b/libs/cairo-1.16.0/src/Makefile.in
new file mode 100644
index 0000000..6bbc649
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.in
@@ -0,0 +1,3127 @@
+# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Note: All source files are listed in Makefile.sources.
+
+# Generated by configure.  Do not edit.
+
+# Makefile.sources
+#
+# This file is the canonical location listing all the source files used
+# to build the cairo library.  Every source file is categorized as one of:
+#
+#   * public header file
+#   * private header file (must end in -private.h except for cairoint.h)
+#   * source code file
+#
+# Every source file should be specified exactly once, grouped with the
+# feature that uses the source file.  If more than one feature use the
+# file (like pdf_operators or font_subset files), the files should be
+# appended to to the base cairo files, and the code inside them
+# enabled/disabled using C preprocessor macros defined in cairoint.h.
+# See how pdf_operators or font_subset are handled.
+#
+# The sources are picked up according to the configured features
+# by the generated file Makefile.am.features or Makefile.win32.features.
+#
+# These are a few special source files.  Those are not included in this
+# file to not confuse build systems.  Each build system must handle them
+# separately.  These files include:
+#
+#   * cairo-features.h:
+#     This file is generated by configure and includes macros signifying
+#     which features are enabled.  This file should be installed like
+#     other public headers, but should NOT be distributed in the cairo
+#     distribution.
+#
+#   * cairo-version.h:
+#     This is a dummy header file used during the build, but it should
+#     NOT be installed.  Its sole purpose is to make sure changes in the
+#     cairo version do not trigger a full rebuild of the library, but
+#     just the functions actually using the version information.
+#
+#   * $(top_srcdir)/cairo-version.h:
+#     This is the real file holding the cairo version number.  This file
+#     should be installed like other public headers.  This is used during
+#     the build by cairo-version.c only.
+#
+#   * cairo-supported-features.h:
+#     This file is generated by configure and includes macros signifying
+#     all supported features.  This is used by gtk-doc to generate
+#     documentation for all those macros, enabled or not.
+#     This file is NOT used during the build of the library and should
+#     NOT be installed or distributed.
+#
+# Please follow the strict syntax of this file, including keeping file
+# lists sorted.
+#
+
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
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+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
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+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
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+PRE_INSTALL = :
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+	cairo-beos.h cairo-drm.h cairo-gl.h cairo-cogl.h \
+	cairo-directfb.h cairo-vg.h cairo-script.h cairo-ft.h \
+	cairo-ps.h cairo-pdf.h cairo-svg.h cairo-tee.h cairo-xml.h \
+	$(top_srcdir)/cairo-version.h
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+	cairo-freelist-private.h cairo-freelist-type-private.h \
+	cairo-gstate-private.h cairo-hash-private.h \
+	cairo-image-info-private.h cairo-image-surface-inline.h \
+	cairo-image-surface-private.h cairo-line-inline.h \
+	cairo-line-private.h cairo-list-inline.h cairo-list-private.h \
+	cairo-malloc-private.h cairo-mempool-private.h \
+	cairo-mutex-impl-private.h cairo-mutex-list-private.h \
+	cairo-mutex-private.h cairo-mutex-type-private.h \
+	cairo-output-stream-private.h cairo-paginated-private.h \
+	cairo-paginated-surface-private.h cairo-path-fixed-private.h \
+	cairo-path-private.h cairo-pattern-inline.h \
+	cairo-pattern-private.h cairo-pixman-private.h cairo-private.h \
+	cairo-recording-surface-inline.h \
+	cairo-recording-surface-private.h \
+	cairo-reference-count-private.h cairo-region-private.h \
+	cairo-rtree-private.h cairo-scaled-font-private.h \
+	cairo-slope-private.h cairo-spans-compositor-private.h \
+	cairo-spans-private.h cairo-stroke-dash-private.h \
+	cairo-surface-backend-private.h \
+	cairo-surface-clipper-private.h \
+	cairo-surface-fallback-private.h cairo-surface-inline.h \
+	cairo-surface-observer-inline.h \
+	cairo-surface-observer-private.h \
+	cairo-surface-offset-private.h cairo-surface-private.h \
+	cairo-surface-snapshot-inline.h \
+	cairo-surface-snapshot-private.h \
+	cairo-surface-subsurface-inline.h \
+	cairo-surface-subsurface-private.h \
+	cairo-surface-wrapper-private.h cairo-time-private.h \
+	cairo-traps-private.h cairo-tristrip-private.h \
+	cairo-types-private.h cairo-user-font-private.h \
+	cairo-wideint-private.h cairo-wideint-type-private.h $(NULL) \
+	$(_cairo_font_subset_private) $(_cairo_pdf_operators_private)
+cairo_sources = cairo-analysis-surface.c cairo-arc.c cairo-array.c \
+	cairo-atomic.c cairo-base64-stream.c cairo-base85-stream.c \
+	cairo-bentley-ottmann-rectangular.c \
+	cairo-bentley-ottmann-rectilinear.c cairo-bentley-ottmann.c \
+	cairo-botor-scan-converter.c cairo-boxes-intersect.c \
+	cairo-boxes.c cairo-cache.c cairo-clip-boxes.c \
+	cairo-clip-polygon.c cairo-clip-region.c cairo-clip-surface.c \
+	cairo-clip-tor-scan-converter.c cairo-clip.c cairo-color.c \
+	cairo-composite-rectangles.c cairo-compositor.c \
+	cairo-contour.c cairo-damage.c cairo-debug.c \
+	cairo-default-context.c cairo-device.c cairo-error.c \
+	cairo-fallback-compositor.c cairo-fixed.c \
+	cairo-font-face-twin-data.c cairo-font-face-twin.c \
+	cairo-font-face.c cairo-font-options.c cairo-freed-pool.c \
+	cairo-freelist.c cairo-gstate.c cairo-hash.c cairo-hull.c \
+	cairo-image-compositor.c cairo-image-info.c \
+	cairo-image-source.c cairo-image-surface.c cairo-line.c \
+	cairo-lzw.c cairo-mask-compositor.c cairo-matrix.c \
+	cairo-mempool.c cairo-mesh-pattern-rasterizer.c cairo-misc.c \
+	cairo-mono-scan-converter.c cairo-mutex.c \
+	cairo-no-compositor.c cairo-observer.c cairo-output-stream.c \
+	cairo-paginated-surface.c cairo-path-bounds.c \
+	cairo-path-fill.c cairo-path-fixed.c cairo-path-in-fill.c \
+	cairo-path-stroke-boxes.c cairo-path-stroke-polygon.c \
+	cairo-path-stroke-traps.c cairo-path-stroke-tristrip.c \
+	cairo-path-stroke.c cairo-path.c cairo-pattern.c cairo-pen.c \
+	cairo-polygon-intersect.c cairo-polygon-reduce.c \
+	cairo-polygon.c cairo-raster-source-pattern.c \
+	cairo-recording-surface.c cairo-rectangle.c \
+	cairo-rectangular-scan-converter.c cairo-region.c \
+	cairo-rtree.c cairo-scaled-font.c \
+	cairo-shape-mask-compositor.c cairo-slope.c \
+	cairo-spans-compositor.c cairo-spans.c cairo-spline.c \
+	cairo-stroke-dash.c cairo-stroke-style.c \
+	cairo-surface-clipper.c cairo-surface-fallback.c \
+	cairo-surface-observer.c cairo-surface-offset.c \
+	cairo-surface-snapshot.c cairo-surface-subsurface.c \
+	cairo-surface-wrapper.c cairo-surface.c cairo-time.c \
+	cairo-tor-scan-converter.c cairo-tor22-scan-converter.c \
+	cairo-toy-font-face.c cairo-traps-compositor.c cairo-traps.c \
+	cairo-tristrip.c cairo-unicode.c cairo-user-font.c \
+	cairo-version.c cairo-wideint.c cairo.c $(NULL) \
+	$(_cairo_font_subset_sources) $(_cairo_pdf_operators_sources) \
+	$(_cairo_deflate_stream_sources)
+_cairo_font_subset_private = \
+	cairo-scaled-font-subsets-private.h \
+	cairo-truetype-subset-private.h \
+	cairo-type1-private.h \
+        cairo-type3-glyph-surface-private.h \
+	$(NULL)
+
+_cairo_font_subset_sources = \
+	cairo-cff-subset.c \
+	cairo-scaled-font-subsets.c \
+	cairo-truetype-subset.c \
+	cairo-type1-fallback.c \
+	cairo-type1-glyph-names.c \
+	cairo-type1-subset.c \
+        cairo-type3-glyph-surface.c \
+	$(NULL)
+
+cairo_egl_sources = cairo-egl-context.c
+cairo_glx_sources = cairo-glx-context.c
+cairo_wgl_sources = cairo-wgl-context.c
+_cairo_pdf_operators_private = \
+	cairo-pdf-operators-private.h \
+	cairo-pdf-shading-private.h \
+	cairo-tag-attributes-private.h \
+	$(NULL)
+
+_cairo_pdf_operators_sources = \
+	cairo-pdf-operators.c \
+	cairo-pdf-shading.c \
+	cairo-tag-attributes.c \
+	$(NULL)
+
+cairo_png_sources = cairo-png.c
+cairo_ps_headers = cairo-ps.h
+cairo_ps_private = cairo-ps-surface-private.h
+cairo_ps_sources = cairo-ps-surface.c
+_cairo_deflate_stream_sources = cairo-deflate-stream.c
+cairo_pdf_headers = cairo-pdf.h
+cairo_pdf_private = cairo-pdf-surface-private.h cairo-tag-stack-private.h
+cairo_pdf_sources = cairo-pdf-surface.c cairo-pdf-interchange.c cairo-tag-stack.c
+cairo_svg_headers = cairo-svg.h
+cairo_svg_private = cairo-svg-surface-private.h
+cairo_svg_sources = cairo-svg-surface.c
+cairo_ft_headers = cairo-ft.h
+cairo_ft_private = cairo-ft-private.h
+cairo_ft_sources = cairo-ft-font.c
+
+# These are private, even though they look like public headers
+cairo_test_surfaces_private = \
+	test-compositor-surface.h \
+	test-compositor-surface-private.h \
+	test-null-compositor-surface.h \
+	test-paginated-surface.h \
+	$(NULL)
+
+cairo_test_surfaces_sources = \
+	test-compositor-surface.c \
+	test-null-compositor-surface.c \
+	test-base-compositor-surface.c \
+	test-paginated-surface.c \
+	$(NULL)
+
+cairo_xlib_headers = cairo-xlib.h
+cairo_xlib_private = \
+	cairo-xlib-private.h \
+	cairo-xlib-surface-private.h \
+	cairo-xlib-xrender-private.h \
+	$(NULL)
+
+cairo_xlib_sources = \
+	cairo-xlib-display.c \
+	cairo-xlib-core-compositor.c \
+	cairo-xlib-fallback-compositor.c \
+	cairo-xlib-render-compositor.c \
+	cairo-xlib-screen.c \
+	cairo-xlib-source.c \
+	cairo-xlib-surface.c \
+	cairo-xlib-surface-shm.c \
+	cairo-xlib-visual.c \
+	cairo-xlib-xcb-surface.c \
+	$(NULL)
+
+cairo_xlib_xrender_headers = cairo-xlib-xrender.h
+cairo_xcb_headers = cairo-xcb.h
+cairo_xcb_private = cairo-xcb-private.h
+cairo_xcb_sources = \
+		    cairo-xcb-connection.c \
+		    cairo-xcb-connection-core.c \
+		    cairo-xcb-connection-render.c \
+		    cairo-xcb-connection-shm.c \
+		    cairo-xcb-screen.c \
+		    cairo-xcb-shm.c \
+		    cairo-xcb-surface.c \
+		    cairo-xcb-surface-core.c \
+		    cairo-xcb-surface-render.c \
+		    cairo-xcb-resources.c \
+		    $(NULL)
+
+cairo_qt_headers = cairo-qt.h
+cairo_qt_cxx_sources = cairo-qt-surface.cpp
+cairo_quartz_headers = cairo-quartz.h
+cairo_quartz_private = cairo-quartz-private.h
+cairo_quartz_sources = cairo-quartz-surface.c
+cairo_quartz_image_headers = cairo-quartz-image.h
+cairo_quartz_image_sources = cairo-quartz-image-surface.c
+cairo_quartz_font_sources = cairo-quartz-font.c
+cairo_win32_headers = cairo-win32.h
+cairo_win32_private = win32/cairo-win32-private.h
+cairo_win32_sources = \
+	win32/cairo-win32-debug.c \
+	win32/cairo-win32-device.c \
+	win32/cairo-win32-gdi-compositor.c \
+	win32/cairo-win32-system.c \
+	win32/cairo-win32-surface.c \
+	win32/cairo-win32-display-surface.c \
+	win32/cairo-win32-printing-surface.c \
+	$(NULL)
+
+cairo_win32_font_sources = \
+	win32/cairo-win32-font.c \
+	$(NULL)
+
+cairo_os2_headers = cairo-os2.h
+cairo_os2_private = cairo-os2-private.h
+cairo_os2_sources = cairo-os2-surface.c
+
+# automake is stupid enough to always use c++ linker if we enable the
+# following lines, even if beos surface is not enabled.  Disable it for now.
+cairo_beos_headers = cairo-beos.h
+cairo_beos_cxx_sources = cairo-beos-surface.cpp
+cairo_gl_headers = cairo-gl.h
+cairo_gl_private = cairo-gl-private.h \
+		   cairo-gl-dispatch-private.h \
+		   cairo-gl-ext-def-private.h \
+		   cairo-gl-gradient-private.h
+
+cairo_gl_sources = cairo-gl-composite.c \
+		   cairo-gl-device.c \
+		   cairo-gl-dispatch.c \
+		   cairo-gl-glyphs.c \
+		   cairo-gl-gradient.c \
+		   cairo-gl-info.c \
+		   cairo-gl-msaa-compositor.c \
+		   cairo-gl-operand.c \
+		   cairo-gl-shaders.c \
+		   cairo-gl-source.c \
+		   cairo-gl-spans-compositor.c \
+		   cairo-gl-surface.c \
+		   cairo-gl-traps-compositor.c
+
+cairo_glesv2_headers = $(cairo_gl_headers)
+cairo_glesv2_private = $(cairo_gl_private)
+cairo_glesv2_sources = $(cairo_gl_sources)
+cairo_glesv3_headers = $(cairo_gl_headers)
+cairo_glesv3_private = $(cairo_gl_private)
+cairo_glesv3_sources = $(cairo_gl_sources)
+cairo_directfb_headers = cairo-directfb.h
+cairo_directfb_sources = cairo-directfb-surface.c
+cairo_drm_headers = cairo-drm.h
+cairo_drm_private = drm/cairo-drm-private.h \
+		    drm/cairo-drm-intel-private.h \
+		    drm/cairo-drm-intel-brw-defines.h \
+		    drm/cairo-drm-intel-brw-structs.h \
+		    drm/cairo-drm-intel-brw-eu.h \
+		    drm/cairo-drm-intel-command-private.h \
+		    drm/cairo-drm-intel-ioctl-private.h \
+		    drm/cairo-drm-i915-private.h \
+		    drm/cairo-drm-i965-private.h \
+		    drm/cairo-drm-radeon-private.h
+
+cairo_drm_sources = drm/cairo-drm.c \
+		    drm/cairo-drm-bo.c \
+		    drm/cairo-drm-surface.c \
+		    drm/cairo-drm-intel.c \
+		    drm/cairo-drm-intel-debug.c \
+		    drm/cairo-drm-intel-surface.c \
+		    drm/cairo-drm-i915-surface.c \
+		    drm/cairo-drm-i915-glyphs.c \
+		    drm/cairo-drm-i915-shader.c \
+		    drm/cairo-drm-i915-spans.c \
+		    drm/cairo-drm-i965-surface.c \
+		    drm/cairo-drm-i965-glyphs.c \
+		    drm/cairo-drm-i965-shader.c \
+		    drm/cairo-drm-i965-spans.c \
+		    drm/cairo-drm-intel-brw-eu.c \
+		    drm/cairo-drm-intel-brw-eu-emit.c \
+		    drm/cairo-drm-intel-brw-eu-util.c \
+		    drm/cairo-drm-radeon.c \
+		    drm/cairo-drm-radeon-surface.c
+
+cairo_gallium_sources = drm/cairo-drm-gallium-surface.c
+cairo_script_headers = cairo-script.h
+cairo_script_private = cairo-script-private.h
+cairo_script_sources = cairo-script-surface.c
+cairo_tee_headers = cairo-tee.h
+cairo_tee_private = cairo-tee-surface-private.h
+cairo_tee_sources = cairo-tee-surface.c
+cairo_xml_headers = cairo-xml.h
+cairo_xml_sources = cairo-xml-surface.c
+cairo_vg_headers = cairo-vg.h
+cairo_vg_sources = cairo-vg-surface.c
+cairo_cogl_headers = cairo-cogl.h
+cairo_cogl_private = cairo-cogl-private.h \
+		     cairo-cogl-gradient-private.h \
+		     cairo-cogl-context-private.h \
+		     cairo-cogl-utils-private.h
+
+cairo_cogl_sources = cairo-cogl-surface.c \
+		     cairo-cogl-gradient.c \
+		     cairo-cogl-context.c \
+		     cairo-cogl-utils.c
+
+supported_cairo_headers = $(cairo_headers) $(cairo_xlib_headers) \
+	$(cairo_xlib_xrender_headers) $(cairo_xcb_headers) \
+	$(cairo_xcb_shm_headers) $(cairo_quartz_headers) \
+	$(cairo_quartz_font_headers) $(cairo_win32_headers) \
+	$(cairo_win32_font_headers) $(cairo_png_headers) \
+	$(cairo_egl_headers) $(cairo_glx_headers) $(cairo_wgl_headers) \
+	$(cairo_script_headers) $(cairo_ft_headers) \
+	$(cairo_fc_headers) $(cairo_ps_headers) $(cairo_pdf_headers) \
+	$(cairo_svg_headers) $(cairo_image_headers) \
+	$(cairo_mime_headers) $(cairo_recording_headers) \
+	$(cairo_observer_headers) $(cairo_user_headers) \
+	$(cairo_gobject_headers)
+unsupported_cairo_headers = $(cairo_xlib_xcb_headers) \
+	$(cairo_qt_headers) $(cairo_quartz_image_headers) \
+	$(cairo_os2_headers) $(cairo_beos_headers) \
+	$(cairo_drm_headers) $(cairo_gallium_headers) \
+	$(cairo_gl_headers) $(cairo_glesv2_headers) \
+	$(cairo_glesv3_headers) $(cairo_cogl_headers) \
+	$(cairo_directfb_headers) $(cairo_vg_headers) \
+	$(cairo_tee_headers) $(cairo_xml_headers)
+all_cairo_headers = $(cairo_headers) $(cairo_xlib_headers) \
+	$(cairo_xlib_xrender_headers) $(cairo_xcb_headers) \
+	$(cairo_xlib_xcb_headers) $(cairo_xcb_shm_headers) \
+	$(cairo_qt_headers) $(cairo_quartz_headers) \
+	$(cairo_quartz_font_headers) $(cairo_quartz_image_headers) \
+	$(cairo_win32_headers) $(cairo_win32_font_headers) \
+	$(cairo_os2_headers) $(cairo_beos_headers) \
+	$(cairo_drm_headers) $(cairo_gallium_headers) \
+	$(cairo_png_headers) $(cairo_gl_headers) \
+	$(cairo_glesv2_headers) $(cairo_glesv3_headers) \
+	$(cairo_cogl_headers) $(cairo_directfb_headers) \
+	$(cairo_vg_headers) $(cairo_egl_headers) $(cairo_glx_headers) \
+	$(cairo_wgl_headers) $(cairo_script_headers) \
+	$(cairo_ft_headers) $(cairo_fc_headers) $(cairo_ps_headers) \
+	$(cairo_pdf_headers) $(cairo_svg_headers) \
+	$(cairo_image_headers) $(cairo_mime_headers) \
+	$(cairo_recording_headers) $(cairo_observer_headers) \
+	$(cairo_tee_headers) $(cairo_xml_headers) \
+	$(cairo_user_headers) $(cairo_gobject_headers)
+all_cairo_private = $(cairo_private) $(cairo_xlib_private) \
+	$(cairo_xlib_xrender_private) $(cairo_xcb_private) \
+	$(cairo_xlib_xcb_private) $(cairo_xcb_shm_private) \
+	$(cairo_qt_private) $(cairo_quartz_private) \
+	$(cairo_quartz_font_private) $(cairo_quartz_image_private) \
+	$(cairo_win32_private) $(cairo_win32_font_private) \
+	$(cairo_os2_private) $(cairo_beos_private) \
+	$(cairo_drm_private) $(cairo_gallium_private) \
+	$(cairo_png_private) $(cairo_gl_private) \
+	$(cairo_glesv2_private) $(cairo_glesv3_private) \
+	$(cairo_cogl_private) $(cairo_directfb_private) \
+	$(cairo_vg_private) $(cairo_egl_private) $(cairo_glx_private) \
+	$(cairo_wgl_private) $(cairo_script_private) \
+	$(cairo_ft_private) $(cairo_fc_private) $(cairo_ps_private) \
+	$(cairo_pdf_private) $(cairo_svg_private) \
+	$(cairo_test_surfaces_private) $(cairo_test_surfaces_headers) \
+	$(cairo_image_private) $(cairo_mime_private) \
+	$(cairo_recording_private) $(cairo_observer_private) \
+	$(cairo_tee_private) $(cairo_xml_private) \
+	$(cairo_user_private) $(cairo_pthread_private) \
+	$(cairo_pthread_headers) $(cairo_gobject_private) \
+	$(cairo_trace_private) $(cairo_trace_headers) \
+	$(cairo_interpreter_private) $(cairo_interpreter_headers) \
+	$(cairo_symbol_lookup_private) $(cairo_symbol_lookup_headers)
+all_cairo_cxx_sources = $(cairo_cxx_sources) $(cairo_xlib_cxx_sources) \
+	$(cairo_xlib_xrender_cxx_sources) $(cairo_xcb_cxx_sources) \
+	$(cairo_xlib_xcb_cxx_sources) $(cairo_xcb_shm_cxx_sources) \
+	$(cairo_qt_cxx_sources) $(cairo_quartz_cxx_sources) \
+	$(cairo_quartz_font_cxx_sources) \
+	$(cairo_quartz_image_cxx_sources) $(cairo_win32_cxx_sources) \
+	$(cairo_win32_font_cxx_sources) $(cairo_os2_cxx_sources) \
+	$(cairo_beos_cxx_sources) $(cairo_drm_cxx_sources) \
+	$(cairo_gallium_cxx_sources) $(cairo_png_cxx_sources) \
+	$(cairo_gl_cxx_sources) $(cairo_glesv2_cxx_sources) \
+	$(cairo_glesv3_cxx_sources) $(cairo_cogl_cxx_sources) \
+	$(cairo_directfb_cxx_sources) $(cairo_vg_cxx_sources) \
+	$(cairo_egl_cxx_sources) $(cairo_glx_cxx_sources) \
+	$(cairo_wgl_cxx_sources) $(cairo_script_cxx_sources) \
+	$(cairo_ft_cxx_sources) $(cairo_fc_cxx_sources) \
+	$(cairo_ps_cxx_sources) $(cairo_pdf_cxx_sources) \
+	$(cairo_svg_cxx_sources) $(cairo_test_surfaces_cxx_sources) \
+	$(cairo_image_cxx_sources) $(cairo_mime_cxx_sources) \
+	$(cairo_recording_cxx_sources) $(cairo_observer_cxx_sources) \
+	$(cairo_tee_cxx_sources) $(cairo_xml_cxx_sources) \
+	$(cairo_user_cxx_sources) $(cairo_pthread_cxx_sources) \
+	$(cairo_gobject_cxx_sources) $(cairo_trace_cxx_sources) \
+	$(cairo_interpreter_cxx_sources) \
+	$(cairo_symbol_lookup_cxx_sources)
+all_cairo_sources = $(cairo_sources) $(cairo_xlib_sources) \
+	$(cairo_xlib_xrender_sources) $(cairo_xcb_sources) \
+	$(cairo_xlib_xcb_sources) $(cairo_xcb_shm_sources) \
+	$(cairo_qt_sources) $(cairo_quartz_sources) \
+	$(cairo_quartz_font_sources) $(cairo_quartz_image_sources) \
+	$(cairo_win32_sources) $(cairo_win32_font_sources) \
+	$(cairo_os2_sources) $(cairo_beos_sources) \
+	$(cairo_drm_sources) $(cairo_gallium_sources) \
+	$(cairo_png_sources) $(cairo_gl_sources) \
+	$(cairo_glesv2_sources) $(cairo_glesv3_sources) \
+	$(cairo_cogl_sources) $(cairo_directfb_sources) \
+	$(cairo_vg_sources) $(cairo_egl_sources) $(cairo_glx_sources) \
+	$(cairo_wgl_sources) $(cairo_script_sources) \
+	$(cairo_ft_sources) $(cairo_fc_sources) $(cairo_ps_sources) \
+	$(cairo_pdf_sources) $(cairo_svg_sources) \
+	$(cairo_test_surfaces_sources) $(cairo_image_sources) \
+	$(cairo_mime_sources) $(cairo_recording_sources) \
+	$(cairo_observer_sources) $(cairo_tee_sources) \
+	$(cairo_xml_sources) $(cairo_user_sources) \
+	$(cairo_pthread_sources) $(cairo_gobject_sources) \
+	$(cairo_trace_sources) $(cairo_interpreter_sources) \
+	$(cairo_symbol_lookup_sources)
+enabled_cairo_headers = $(cairo_headers) $(am__append_1) \
+	$(am__append_6) $(am__append_11) $(am__append_16) \
+	$(am__append_21) $(am__append_26) $(am__append_31) \
+	$(am__append_36) $(am__append_41) $(am__append_46) \
+	$(am__append_51) $(am__append_56) $(am__append_61) \
+	$(am__append_66) $(am__append_71) $(am__append_76) \
+	$(am__append_81) $(am__append_86) $(am__append_91) \
+	$(am__append_96) $(am__append_101) $(am__append_106) \
+	$(am__append_111) $(am__append_116) $(am__append_121) \
+	$(am__append_126) $(am__append_131) $(am__append_136) \
+	$(am__append_141) $(am__append_146) $(am__append_151) \
+	$(cairo_image_headers) $(cairo_mime_headers) \
+	$(cairo_recording_headers) $(cairo_observer_headers) \
+	$(am__append_159) $(am__append_164) $(cairo_user_headers) \
+	$(am__append_172)
+enabled_cairo_private = $(cairo_private) $(am__append_2) \
+	$(am__append_7) $(am__append_12) $(am__append_17) \
+	$(am__append_22) $(am__append_27) $(am__append_32) \
+	$(am__append_37) $(am__append_42) $(am__append_47) \
+	$(am__append_52) $(am__append_57) $(am__append_62) \
+	$(am__append_67) $(am__append_72) $(am__append_77) \
+	$(am__append_82) $(am__append_87) $(am__append_92) \
+	$(am__append_97) $(am__append_102) $(am__append_107) \
+	$(am__append_112) $(am__append_117) $(am__append_122) \
+	$(am__append_127) $(am__append_132) $(am__append_137) \
+	$(am__append_142) $(am__append_147) $(am__append_152) \
+	$(am__append_156) $(cairo_image_private) $(cairo_mime_private) \
+	$(cairo_recording_private) $(cairo_observer_private) \
+	$(am__append_160) $(am__append_165) $(cairo_user_private) \
+	$(am__append_169) $(am__append_173) $(am__append_177) \
+	$(am__append_180) $(am__append_183)
+enabled_cairo_cxx_sources = $(cairo_cxx_sources) $(am__append_3) \
+	$(am__append_8) $(am__append_13) $(am__append_18) \
+	$(am__append_23) $(am__append_28) $(am__append_33) \
+	$(am__append_38) $(am__append_43) $(am__append_48) \
+	$(am__append_53) $(am__append_58) $(am__append_63) \
+	$(am__append_68) $(am__append_73) $(am__append_78) \
+	$(am__append_83) $(am__append_88) $(am__append_93) \
+	$(am__append_98) $(am__append_103) $(am__append_108) \
+	$(am__append_113) $(am__append_118) $(am__append_123) \
+	$(am__append_128) $(am__append_133) $(am__append_138) \
+	$(am__append_143) $(am__append_148) $(am__append_153) \
+	$(am__append_157) $(cairo_image_cxx_sources) \
+	$(cairo_mime_cxx_sources) $(cairo_recording_cxx_sources) \
+	$(cairo_observer_cxx_sources) $(am__append_161) \
+	$(am__append_166) $(cairo_user_cxx_sources) $(am__append_170) \
+	$(am__append_174) $(am__append_178) $(am__append_181) \
+	$(am__append_184)
+enabled_cairo_sources = $(cairo_sources) $(am__append_4) \
+	$(am__append_9) $(am__append_14) $(am__append_19) \
+	$(am__append_24) $(am__append_29) $(am__append_34) \
+	$(am__append_39) $(am__append_44) $(am__append_49) \
+	$(am__append_54) $(am__append_59) $(am__append_64) \
+	$(am__append_69) $(am__append_74) $(am__append_79) \
+	$(am__append_84) $(am__append_89) $(am__append_94) \
+	$(am__append_99) $(am__append_104) $(am__append_109) \
+	$(am__append_114) $(am__append_119) $(am__append_124) \
+	$(am__append_129) $(am__append_134) $(am__append_139) \
+	$(am__append_144) $(am__append_149) $(am__append_154) \
+	$(am__append_158) $(cairo_image_sources) $(cairo_mime_sources) \
+	$(cairo_recording_sources) $(cairo_observer_sources) \
+	$(am__append_162) $(am__append_167) $(cairo_user_sources) \
+	$(am__append_171) $(am__append_175) $(am__append_179) \
+	$(am__append_182) $(am__append_185)
+all_cairo_pkgconf = cairo.pc cairo-xlib.pc cairo-xlib-xrender.pc \
+	cairo-xcb.pc cairo-xlib-xcb.pc cairo-xcb-shm.pc cairo-qt.pc \
+	cairo-quartz.pc cairo-quartz-font.pc cairo-quartz-image.pc \
+	cairo-win32.pc cairo-win32-font.pc cairo-os2.pc cairo-beos.pc \
+	cairo-drm.pc cairo-gallium.pc cairo-png.pc cairo-gl.pc \
+	cairo-glesv2.pc cairo-glesv3.pc cairo-cogl.pc \
+	cairo-directfb.pc cairo-vg.pc cairo-egl.pc cairo-glx.pc \
+	cairo-wgl.pc cairo-script.pc cairo-ft.pc cairo-fc.pc \
+	cairo-ps.pc cairo-pdf.pc cairo-svg.pc cairo-tee.pc \
+	cairo-xml.pc cairo-gobject.pc
+enabled_cairo_pkgconf = cairo.pc $(am__append_5) $(am__append_10) \
+	$(am__append_15) $(am__append_20) $(am__append_25) \
+	$(am__append_30) $(am__append_35) $(am__append_40) \
+	$(am__append_45) $(am__append_50) $(am__append_55) \
+	$(am__append_60) $(am__append_65) $(am__append_70) \
+	$(am__append_75) $(am__append_80) $(am__append_85) \
+	$(am__append_90) $(am__append_95) $(am__append_100) \
+	$(am__append_105) $(am__append_110) $(am__append_115) \
+	$(am__append_120) $(am__append_125) $(am__append_130) \
+	$(am__append_135) $(am__append_140) $(am__append_145) \
+	$(am__append_150) $(am__append_155) $(am__append_163) \
+	$(am__append_168) $(am__append_176)
+#MAINTAINERCLEANFILES += $(srcdir)/Makefile.win32.features
+AM_CPPFLAGS = -I$(srcdir) $(CAIRO_CFLAGS)
+AM_LDFLAGS = $(CAIRO_LDFLAGS)
+@OS_WIN32_TRUE@export_symbols = -export-symbols cairo.def
+@OS_WIN32_TRUE@cairo_def_dependency = cairo.def
+cairoincludedir = $(includedir)/cairo
+
+# Special headers
+cairoinclude_HEADERS = $(enabled_cairo_headers) \
+	$(top_srcdir)/cairo-version.h
+lib_LTLIBRARIES = libcairo.la
+@BUILD_CXX_FALSE@cairo_cxx_lib = 
+@BUILD_CXX_TRUE@cairo_cxx_lib = libcairo_cxx.la
+noinst_LTLIBRARIES = $(cairo_cxx_lib)
+libcairo_cxx_la_SOURCES = \
+	$(enabled_cairo_headers) \
+	$(enabled_cairo_private) \
+	$(enabled_cairo_cxx_sources) \
+	$(NULL)
+
+libcairo_cxx_la_LDFLAGS = $(AM_LDFLAGS) $(export_symbols)
+libcairo_cxx_la_LIBADD = $(CAIRO_LIBS)
+libcairo_cxx_la_DEPENDENCIES = $(cairo_def_dependency)
+libcairo_la_SOURCES = $(enabled_cairo_headers) \
+	$(enabled_cairo_private) $(enabled_cairo_sources) $(NULL) \
+	cairo-version.h
+libcairo_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(CAIRO_LIBTOOL_VERSION_INFO) -no-undefined $(export_symbols)
+libcairo_la_LIBADD = $(CAIRO_LIBS) \
+	$(cairo_cxx_lib)
+
+libcairo_la_DEPENDENCIES = $(cairo_def_dependency) $(cairo_cxx_lib)
+nodist_cairoinclude_HEADERS = cairo-features.h
+nodist_libcairo_la_SOURCES = cairo-features.h
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = $(enabled_cairo_pkgconf)
+TESTS_ENVIRONMENT = \
+	srcdir="$(srcdir)" \
+	MAKE="$(MAKE) $(AM_MAKEFLAGS)" \
+	all_cairo_files="$(all_cairo_files)" \
+	all_cairo_headers="$(all_cairo_headers)" \
+	all_cairo_private="$(all_cairo_private)" \
+	all_cairo_sources="$(all_cairo_sources)" \
+	enabled_cairo_headers="$(enabled_cairo_headers)" \
+	enabled_cairo_private="$(enabled_cairo_private)" \
+	enabled_cairo_sources="$(enabled_cairo_sources)" \
+	$(NULL)
+
+TESTS_SH = \
+	check-def.sh \
+	check-doc-syntax.sh \
+	check-headers.sh \
+	check-plt.sh \
+	check-preprocessor-syntax.sh \
+	$(NULL)
+
+check_link_LDADD = libcairo.la
+PREPROCESS_ARGS = $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS)
+COMPILE_ARGS = $(PREPROCESS_ARGS) $(AM_CFLAGS) $(CFLAGS)
+SPARSE = sparse
+SPLINT = splint -badflag
+UNO = uno
+all: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .cpp .i .lo .log .o .obj .s .test .test$(EXEEXT) .trs
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am $(top_srcdir)/build/Makefile.am.common $(srcdir)/Makefile.am.features $(top_srcdir)/src/Makefile.sources $(srcdir)/Makefile.am.analysis $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign src/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+$(top_srcdir)/build/Makefile.am.common $(srcdir)/Makefile.am.features $(top_srcdir)/src/Makefile.sources $(srcdir)/Makefile.am.analysis $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+cairo.pc: $(top_builddir)/config.status $(srcdir)/cairo.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-xlib.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-xlib-xrender.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-xcb.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-xlib-xcb.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-xcb-shm.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-qt.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-quartz.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-quartz-font.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-quartz-image.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-win32.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-win32-font.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-os2.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-beos.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-drm.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-gallium.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-png.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-gl.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-glesv2.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-glesv3.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-cogl.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-directfb.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-vg.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-egl.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-glx.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-wgl.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-script.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-ft.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-fc.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-ps.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-pdf.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-svg.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-tee.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-xml.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+cairo-gobject.pc: $(top_builddir)/config.status $(srcdir)/cairo-features.pc.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+
+install-libLTLIBRARIES: $(lib_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
+	}
+
+uninstall-libLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$f"; \
+	done
+
+clean-libLTLIBRARIES:
+	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
+	@list='$(lib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libcairo.la: $(libcairo_la_OBJECTS) $(libcairo_la_DEPENDENCIES) $(EXTRA_libcairo_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(libcairo_la_LINK) -rpath $(libdir) $(libcairo_la_OBJECTS) $(libcairo_la_LIBADD) $(LIBS)
+
+libcairo_cxx.la: $(libcairo_cxx_la_OBJECTS) $(libcairo_cxx_la_DEPENDENCIES) $(EXTRA_libcairo_cxx_la_DEPENDENCIES) 
+	$(AM_V_CXXLD)$(libcairo_cxx_la_LINK) $(am_libcairo_cxx_la_rpath) $(libcairo_cxx_la_OBJECTS) $(libcairo_cxx_la_LIBADD) $(LIBS)
+
+clean-checkPROGRAMS:
+	@list='$(check_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+
+check-link$(EXEEXT): $(check_link_OBJECTS) $(check_link_DEPENDENCIES) $(EXTRA_check_link_DEPENDENCIES) 
+	@rm -f check-link$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(check_link_OBJECTS) $(check_link_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-analysis-surface.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-arc.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-array.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-atomic.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-base64-stream.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-base85-stream.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-bentley-ottmann-rectangular.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-bentley-ottmann-rectilinear.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-bentley-ottmann.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-beos-surface.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-botor-scan-converter.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-boxes-intersect.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-boxes.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-cache.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-cff-subset.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-clip-boxes.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-clip-polygon.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-clip-region.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-clip-surface.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-clip-tor-scan-converter.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-clip.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-cogl-context.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cairo-cogl-gradient.Plo@am__quote@
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+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	done | $(am__base_list) | \
+	while read files; do \
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+	$(MAKE) $(AM_MAKEFLAGS) $<
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+	{ \
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+	  result_count $$1 "ERROR:" $$error "$$mgn"; \
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+	{								\
+	  echo "$(PACKAGE_STRING): $(subdir)/$(TEST_SUITE_LOG)" |	\
+	    $(am__rst_title);						\
+	  create_testsuite_report --no-color;				\
+	  echo;								\
+	  echo ".. contents:: :depth: 2";				\
+	  echo;								\
+	  for b in $$bases; do echo $$b; done				\
+	    | $(am__create_global_log);					\
+	} >$(TEST_SUITE_LOG).tmp || exit 1;				\
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+	log_list=`echo $$log_list`; trs_list=`echo $$trs_list`; \
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+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+	@echo Generating $@
+	@(echo EXPORTS; \
+	(cd $(srcdir); cat $(enabled_cairo_headers) || echo 'cairo_ERROR ()' ) | \
+	$(EGREP) -v '^# *include' | \
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+.c.i: $(cairoinclude_HEADERS) $(nodist_cairoinclude_HEADERS) cairoint.h $(top_builddir)/config.h
+	$(CPP) $(PREPROCESS_ARGS) $< -o $@
+.c.s: $(cairoinclude_HEADERS) $(nodist_cairoinclude_HEADERS) cairoint.h $(top_builddir)/config.h
+	$(CC) $(COMPILE_ARGS) $< -S -o $@
+sparse:
+	@echo Checking enabled sources with sparse checker
+	@status=true; for f in $(enabled_cairo_sources) $(enabled_cairo_cxx_sources); do \
+		echo $(SPARSE) $(PREPROCESS_ARGS) $(srcdir)/$$f; \
+		$(SPARSE) $(PREPROCESS_ARGS) $(srcdir)/$$f || status=false; \
+	done; $$status
+splint:
+	@echo Checking enabled sources with splint checker
+	@status=true; for f in $(enabled_cairo_sources) $(enabled_cairo_cxx_sources); do \
+		echo $(SPLINT) $(PREPROCESS_ARGS) $(srcdir)/$$f; \
+		$(SPLINT) $(PREPROCESS_ARGS) $(srcdir)/$$f || status=false; \
+	done; $$status
+uno:
+	@echo Checking enabled sources with uno checker
+	cd $(srcdir); $(UNO) $(PREPROCESS_ARGS) -DHAVE_CONFIG_H -U__GNUC__ $(enabled_cairo_sources)
+
+headers-standalone: $(enabled_cairo_headers) $(enabled_cairo_private)
+	@echo Checking that enabled public/private headers can be compiled standalone
+	@status=true; for f in $(enabled_cairo_headers) $(enabled_cairo_private); do \
+		echo "  CHECK $$f"; \
+		echo "#include \"$(srcdir)/$$f\"" > headers-standalone-tmp.c; \
+		echo "int main(int argc, char * argv[]) { return 0; }" >> headers-standalone-tmp.c; \
+		$(COMPILE) -o headers-standalone-tmp headers-standalone-tmp.c || status=false; \
+		$(RM) headers-standalone-tmp headers-standalone-tmp.c; \
+	done; $$status
+	@touch $@
+
+analysis: all headers-standalone sparse splint uno
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libs/cairo-1.16.0/src/Makefile.sources b/libs/cairo-1.16.0/src/Makefile.sources
new file mode 100644
index 0000000..096a3bc
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.sources
@@ -0,0 +1,476 @@
+# Makefile.sources
+#
+# This file is the canonical location listing all the source files used
+# to build the cairo library.  Every source file is categorized as one of:
+#
+#   * public header file
+#   * private header file (must end in -private.h except for cairoint.h)
+#   * source code file
+#
+# Every source file should be specified exactly once, grouped with the
+# feature that uses the source file.  If more than one feature use the
+# file (like pdf_operators or font_subset files), the files should be
+# appended to to the base cairo files, and the code inside them
+# enabled/disabled using C preprocessor macros defined in cairoint.h.
+# See how pdf_operators or font_subset are handled.
+#
+# The sources are picked up according to the configured features
+# by the generated file Makefile.am.features or Makefile.win32.features.
+#
+# These are a few special source files.  Those are not included in this
+# file to not confuse build systems.  Each build system must handle them
+# separately.  These files include:
+#
+#   * cairo-features.h:
+#     This file is generated by configure and includes macros signifying
+#     which features are enabled.  This file should be installed like
+#     other public headers, but should NOT be distributed in the cairo
+#     distribution.
+#
+#   * cairo-version.h:
+#     This is a dummy header file used during the build, but it should
+#     NOT be installed.  Its sole purpose is to make sure changes in the
+#     cairo version do not trigger a full rebuild of the library, but
+#     just the functions actually using the version information.
+#
+#   * $(top_srcdir)/cairo-version.h:
+#     This is the real file holding the cairo version number.  This file
+#     should be installed like other public headers.  This is used during
+#     the build by cairo-version.c only.
+#
+#   * cairo-supported-features.h:
+#     This file is generated by configure and includes macros signifying
+#     all supported features.  This is used by gtk-doc to generate
+#     documentation for all those macros, enabled or not.
+#     This file is NOT used during the build of the library and should
+#     NOT be installed or distributed.
+#
+# Please follow the strict syntax of this file, including keeping file
+# lists sorted.
+#
+
+cairo_headers = cairo.h cairo-deprecated.h
+cairo_private = \
+	cairoint.h \
+	cairo-analysis-surface-private.h \
+	cairo-arc-private.h \
+	cairo-array-private.h \
+	cairo-atomic-private.h \
+	cairo-backend-private.h \
+	cairo-box-inline.h \
+	cairo-boxes-private.h \
+	cairo-cache-private.h \
+	cairo-clip-inline.h \
+	cairo-clip-private.h \
+	cairo-combsort-inline.h \
+	cairo-compiler-private.h \
+	cairo-composite-rectangles-private.h \
+	cairo-compositor-private.h \
+	cairo-contour-inline.h \
+	cairo-contour-private.h \
+	cairo-damage-private.h \
+	cairo-default-context-private.h \
+	cairo-device-private.h \
+	cairo-error-inline.h \
+	cairo-error-private.h \
+	cairo-fixed-private.h \
+	cairo-fixed-type-private.h \
+	cairo-fontconfig-private.h \
+	cairo-freed-pool-private.h \
+	cairo-freelist-private.h \
+	cairo-freelist-type-private.h \
+	cairo-gstate-private.h \
+	cairo-hash-private.h \
+	cairo-image-info-private.h \
+	cairo-image-surface-inline.h \
+	cairo-image-surface-private.h \
+	cairo-line-inline.h \
+	cairo-line-private.h \
+	cairo-list-inline.h \
+	cairo-list-private.h \
+	cairo-malloc-private.h \
+	cairo-mempool-private.h \
+	cairo-mutex-impl-private.h \
+	cairo-mutex-list-private.h \
+	cairo-mutex-private.h \
+	cairo-mutex-type-private.h \
+	cairo-output-stream-private.h \
+	cairo-paginated-private.h \
+	cairo-paginated-surface-private.h \
+	cairo-path-fixed-private.h \
+	cairo-path-private.h \
+	cairo-pattern-inline.h \
+	cairo-pattern-private.h \
+	cairo-pixman-private.h \
+	cairo-private.h \
+	cairo-recording-surface-inline.h \
+	cairo-recording-surface-private.h \
+	cairo-reference-count-private.h \
+	cairo-region-private.h \
+	cairo-rtree-private.h \
+	cairo-scaled-font-private.h \
+	cairo-slope-private.h \
+	cairo-spans-compositor-private.h \
+	cairo-spans-private.h \
+	cairo-stroke-dash-private.h \
+	cairo-surface-backend-private.h \
+	cairo-surface-clipper-private.h \
+	cairo-surface-fallback-private.h \
+	cairo-surface-inline.h \
+	cairo-surface-observer-inline.h \
+	cairo-surface-observer-private.h \
+	cairo-surface-offset-private.h \
+	cairo-surface-private.h \
+	cairo-surface-snapshot-inline.h \
+	cairo-surface-snapshot-private.h \
+	cairo-surface-subsurface-inline.h \
+	cairo-surface-subsurface-private.h \
+	cairo-surface-wrapper-private.h \
+	cairo-time-private.h \
+	cairo-traps-private.h \
+	cairo-tristrip-private.h \
+	cairo-types-private.h \
+	cairo-user-font-private.h \
+	cairo-wideint-private.h \
+	cairo-wideint-type-private.h \
+	$(NULL)
+cairo_sources = \
+	cairo-analysis-surface.c \
+	cairo-arc.c \
+	cairo-array.c \
+	cairo-atomic.c \
+	cairo-base64-stream.c \
+	cairo-base85-stream.c \
+	cairo-bentley-ottmann-rectangular.c \
+	cairo-bentley-ottmann-rectilinear.c \
+	cairo-bentley-ottmann.c \
+	cairo-botor-scan-converter.c \
+	cairo-boxes-intersect.c \
+	cairo-boxes.c \
+	cairo-cache.c \
+	cairo-clip-boxes.c \
+	cairo-clip-polygon.c \
+	cairo-clip-region.c \
+	cairo-clip-surface.c \
+	cairo-clip-tor-scan-converter.c \
+	cairo-clip.c \
+	cairo-color.c \
+	cairo-composite-rectangles.c \
+	cairo-compositor.c \
+	cairo-contour.c \
+	cairo-damage.c \
+	cairo-debug.c \
+	cairo-default-context.c \
+	cairo-device.c \
+	cairo-error.c \
+	cairo-fallback-compositor.c \
+	cairo-fixed.c \
+	cairo-font-face-twin-data.c \
+	cairo-font-face-twin.c \
+	cairo-font-face.c \
+	cairo-font-options.c \
+	cairo-freed-pool.c \
+	cairo-freelist.c \
+	cairo-gstate.c \
+	cairo-hash.c \
+	cairo-hull.c \
+	cairo-image-compositor.c \
+	cairo-image-info.c \
+	cairo-image-source.c \
+	cairo-image-surface.c \
+	cairo-line.c \
+	cairo-lzw.c \
+	cairo-mask-compositor.c \
+	cairo-matrix.c \
+	cairo-mempool.c \
+	cairo-mesh-pattern-rasterizer.c \
+	cairo-misc.c \
+	cairo-mono-scan-converter.c \
+	cairo-mutex.c \
+	cairo-no-compositor.c \
+	cairo-observer.c \
+	cairo-output-stream.c \
+	cairo-paginated-surface.c \
+	cairo-path-bounds.c \
+	cairo-path-fill.c \
+	cairo-path-fixed.c \
+	cairo-path-in-fill.c \
+	cairo-path-stroke-boxes.c \
+	cairo-path-stroke-polygon.c \
+	cairo-path-stroke-traps.c \
+	cairo-path-stroke-tristrip.c \
+	cairo-path-stroke.c \
+	cairo-path.c \
+	cairo-pattern.c \
+	cairo-pen.c \
+	cairo-polygon-intersect.c \
+	cairo-polygon-reduce.c \
+	cairo-polygon.c \
+	cairo-raster-source-pattern.c \
+	cairo-recording-surface.c \
+	cairo-rectangle.c \
+	cairo-rectangular-scan-converter.c \
+	cairo-region.c \
+	cairo-rtree.c \
+	cairo-scaled-font.c \
+	cairo-shape-mask-compositor.c \
+	cairo-slope.c \
+	cairo-spans-compositor.c \
+	cairo-spans.c \
+	cairo-spline.c \
+	cairo-stroke-dash.c \
+	cairo-stroke-style.c \
+	cairo-surface-clipper.c \
+	cairo-surface-fallback.c \
+	cairo-surface-observer.c \
+	cairo-surface-offset.c \
+	cairo-surface-snapshot.c \
+	cairo-surface-subsurface.c \
+	cairo-surface-wrapper.c \
+	cairo-surface.c \
+	cairo-time.c \
+	cairo-tor-scan-converter.c \
+	cairo-tor22-scan-converter.c \
+	cairo-toy-font-face.c \
+	cairo-traps-compositor.c \
+	cairo-traps.c \
+	cairo-tristrip.c \
+	cairo-unicode.c \
+	cairo-user-font.c \
+	cairo-version.c \
+	cairo-wideint.c \
+	cairo.c \
+	$(NULL)
+
+_cairo_font_subset_private = \
+	cairo-scaled-font-subsets-private.h \
+	cairo-truetype-subset-private.h \
+	cairo-type1-private.h \
+        cairo-type3-glyph-surface-private.h \
+	$(NULL)
+_cairo_font_subset_sources = \
+	cairo-cff-subset.c \
+	cairo-scaled-font-subsets.c \
+	cairo-truetype-subset.c \
+	cairo-type1-fallback.c \
+	cairo-type1-glyph-names.c \
+	cairo-type1-subset.c \
+        cairo-type3-glyph-surface.c \
+	$(NULL)
+cairo_private += $(_cairo_font_subset_private)
+cairo_sources += $(_cairo_font_subset_sources)
+
+cairo_egl_sources =
+cairo_glx_sources =
+cairo_wgl_sources =
+
+_cairo_pdf_operators_private = \
+	cairo-pdf-operators-private.h \
+	cairo-pdf-shading-private.h \
+	cairo-tag-attributes-private.h \
+	$(NULL)
+_cairo_pdf_operators_sources = \
+	cairo-pdf-operators.c \
+	cairo-pdf-shading.c \
+	cairo-tag-attributes.c \
+	$(NULL)
+cairo_private += $(_cairo_pdf_operators_private)
+cairo_sources += $(_cairo_pdf_operators_sources)
+
+cairo_png_sources = cairo-png.c
+
+cairo_ps_headers = cairo-ps.h
+cairo_ps_private = cairo-ps-surface-private.h
+cairo_ps_sources = cairo-ps-surface.c
+
+_cairo_deflate_stream_sources = cairo-deflate-stream.c
+cairo_sources += $(_cairo_deflate_stream_sources)
+
+cairo_pdf_headers = cairo-pdf.h
+cairo_pdf_private = cairo-pdf-surface-private.h cairo-tag-stack-private.h
+cairo_pdf_sources = cairo-pdf-surface.c cairo-pdf-interchange.c cairo-tag-stack.c
+
+cairo_svg_headers = cairo-svg.h
+cairo_svg_private = cairo-svg-surface-private.h
+cairo_svg_sources = cairo-svg-surface.c
+
+cairo_ft_headers = cairo-ft.h
+cairo_ft_private = cairo-ft-private.h
+cairo_ft_sources = cairo-ft-font.c
+
+# These are private, even though they look like public headers
+cairo_test_surfaces_private = \
+	test-compositor-surface.h \
+	test-compositor-surface-private.h \
+	test-null-compositor-surface.h \
+	test-paginated-surface.h \
+	$(NULL)
+cairo_test_surfaces_sources = \
+	test-compositor-surface.c \
+	test-null-compositor-surface.c \
+	test-base-compositor-surface.c \
+	test-paginated-surface.c \
+	$(NULL)
+
+cairo_xlib_headers = cairo-xlib.h
+cairo_xlib_private = \
+	cairo-xlib-private.h \
+	cairo-xlib-surface-private.h \
+	cairo-xlib-xrender-private.h \
+	$(NULL)
+cairo_xlib_sources = \
+	cairo-xlib-display.c \
+	cairo-xlib-core-compositor.c \
+	cairo-xlib-fallback-compositor.c \
+	cairo-xlib-render-compositor.c \
+	cairo-xlib-screen.c \
+	cairo-xlib-source.c \
+	cairo-xlib-surface.c \
+	cairo-xlib-surface-shm.c \
+	cairo-xlib-visual.c \
+	cairo-xlib-xcb-surface.c \
+	$(NULL)
+
+cairo_xlib_xrender_headers = cairo-xlib-xrender.h
+
+cairo_xcb_headers = cairo-xcb.h
+cairo_xcb_private = cairo-xcb-private.h
+cairo_xcb_sources = \
+		    cairo-xcb-connection.c \
+		    cairo-xcb-connection-core.c \
+		    cairo-xcb-connection-render.c \
+		    cairo-xcb-connection-shm.c \
+		    cairo-xcb-screen.c \
+		    cairo-xcb-shm.c \
+		    cairo-xcb-surface.c \
+		    cairo-xcb-surface-core.c \
+		    cairo-xcb-surface-render.c \
+		    cairo-xcb-resources.c \
+		    $(NULL)
+
+cairo_qt_headers = cairo-qt.h
+cairo_qt_cxx_sources = cairo-qt-surface.cpp
+
+cairo_quartz_headers = cairo-quartz.h
+cairo_quartz_private = cairo-quartz-private.h
+cairo_quartz_sources = cairo-quartz-surface.c
+
+cairo_quartz_image_headers = cairo-quartz-image.h
+cairo_quartz_image_sources = cairo-quartz-image-surface.c
+
+cairo_quartz_font_sources = cairo-quartz-font.c
+
+cairo_win32_headers = cairo-win32.h
+cairo_win32_private = win32/cairo-win32-private.h
+cairo_win32_sources = \
+	win32/cairo-win32-debug.c \
+	win32/cairo-win32-device.c \
+	win32/cairo-win32-gdi-compositor.c \
+	win32/cairo-win32-system.c \
+	win32/cairo-win32-surface.c \
+	win32/cairo-win32-display-surface.c \
+	win32/cairo-win32-printing-surface.c \
+	$(NULL)
+cairo_win32_font_sources = \
+	win32/cairo-win32-font.c \
+	$(NULL)
+
+cairo_os2_headers = cairo-os2.h
+cairo_os2_private = cairo-os2-private.h
+cairo_os2_sources = cairo-os2-surface.c
+
+# automake is stupid enough to always use c++ linker if we enable the
+# following lines, even if beos surface is not enabled.  Disable it for now.
+cairo_beos_headers = cairo-beos.h
+cairo_beos_cxx_sources = cairo-beos-surface.cpp
+
+cairo_gl_headers = cairo-gl.h
+cairo_gl_private = cairo-gl-private.h \
+		   cairo-gl-dispatch-private.h \
+		   cairo-gl-ext-def-private.h \
+		   cairo-gl-gradient-private.h
+
+cairo_gl_sources = cairo-gl-composite.c \
+		   cairo-gl-device.c \
+		   cairo-gl-dispatch.c \
+		   cairo-gl-glyphs.c \
+		   cairo-gl-gradient.c \
+		   cairo-gl-info.c \
+		   cairo-gl-msaa-compositor.c \
+		   cairo-gl-operand.c \
+		   cairo-gl-shaders.c \
+		   cairo-gl-source.c \
+		   cairo-gl-spans-compositor.c \
+		   cairo-gl-surface.c \
+		   cairo-gl-traps-compositor.c
+
+cairo_glesv2_headers = $(cairo_gl_headers)
+cairo_glesv2_private = $(cairo_gl_private)
+cairo_glesv2_sources = $(cairo_gl_sources)
+
+cairo_glesv3_headers = $(cairo_gl_headers)
+cairo_glesv3_private = $(cairo_gl_private)
+cairo_glesv3_sources = $(cairo_gl_sources)
+
+cairo_egl_sources += cairo-egl-context.c
+cairo_glx_sources += cairo-glx-context.c
+cairo_wgl_sources += cairo-wgl-context.c
+
+cairo_directfb_headers = cairo-directfb.h
+cairo_directfb_sources = cairo-directfb-surface.c
+
+cairo_drm_headers = cairo-drm.h
+cairo_drm_private = drm/cairo-drm-private.h \
+		    drm/cairo-drm-intel-private.h \
+		    drm/cairo-drm-intel-brw-defines.h \
+		    drm/cairo-drm-intel-brw-structs.h \
+		    drm/cairo-drm-intel-brw-eu.h \
+		    drm/cairo-drm-intel-command-private.h \
+		    drm/cairo-drm-intel-ioctl-private.h \
+		    drm/cairo-drm-i915-private.h \
+		    drm/cairo-drm-i965-private.h \
+		    drm/cairo-drm-radeon-private.h
+cairo_drm_sources = drm/cairo-drm.c \
+		    drm/cairo-drm-bo.c \
+		    drm/cairo-drm-surface.c \
+		    drm/cairo-drm-intel.c \
+		    drm/cairo-drm-intel-debug.c \
+		    drm/cairo-drm-intel-surface.c \
+		    drm/cairo-drm-i915-surface.c \
+		    drm/cairo-drm-i915-glyphs.c \
+		    drm/cairo-drm-i915-shader.c \
+		    drm/cairo-drm-i915-spans.c \
+		    drm/cairo-drm-i965-surface.c \
+		    drm/cairo-drm-i965-glyphs.c \
+		    drm/cairo-drm-i965-shader.c \
+		    drm/cairo-drm-i965-spans.c \
+		    drm/cairo-drm-intel-brw-eu.c \
+		    drm/cairo-drm-intel-brw-eu-emit.c \
+		    drm/cairo-drm-intel-brw-eu-util.c \
+		    drm/cairo-drm-radeon.c \
+		    drm/cairo-drm-radeon-surface.c
+cairo_gallium_sources = drm/cairo-drm-gallium-surface.c
+
+cairo_script_headers = cairo-script.h
+cairo_script_private = cairo-script-private.h
+cairo_script_sources = cairo-script-surface.c
+
+cairo_tee_headers = cairo-tee.h
+cairo_tee_private = cairo-tee-surface-private.h
+cairo_tee_sources = cairo-tee-surface.c
+
+cairo_xml_headers = cairo-xml.h
+cairo_xml_sources = cairo-xml-surface.c
+
+cairo_vg_headers = cairo-vg.h
+cairo_vg_sources = cairo-vg-surface.c
+
+cairo_cogl_headers = cairo-cogl.h
+cairo_cogl_private = cairo-cogl-private.h \
+		     cairo-cogl-gradient-private.h \
+		     cairo-cogl-context-private.h \
+		     cairo-cogl-utils-private.h
+cairo_cogl_sources = cairo-cogl-surface.c \
+		     cairo-cogl-gradient.c \
+		     cairo-cogl-context.c \
+		     cairo-cogl-utils.c
diff --git a/libs/cairo-1.16.0/src/Makefile.win32 b/libs/cairo-1.16.0/src/Makefile.win32
new file mode 100644
index 0000000..864791f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.win32
@@ -0,0 +1,29 @@
+top_srcdir = ..
+include $(top_srcdir)/build/Makefile.win32.common
+include Makefile.win32.features
+
+SOURCES = $(enabled_cairo_sources)
+
+STATIC_SOURCES = cairo-system.c
+
+OBJECTS = $(patsubst %.c, $(CFG)/%.obj, $(SOURCES))
+OBJECTS_STATIC = $(patsubst %cairo-system.obj, %cairo-system-static.obj, $(OBJECTS))
+
+static: inform $(CFG)/cairo-static.lib
+dynamic: inform $(CFG)/cairo.dll
+
+$(CFG)/cairo.dll: $(OBJECTS)
+	@$(LD) $(CAIRO_LDFLAGS) -DLL -OUT:$@ $(CAIRO_LIBS) $(PIXMAN_LIBS) $(OBJECTS)
+
+$(CFG)/cairo-static.lib: $(OBJECTS_STATIC)
+	@$(AR) $(CAIRO_ARFLAGS) -OUT:$@ $(PIXMAN_LIBS) $(OBJECTS_STATIC)
+
+all: inform $(CFG)/cairo.dll $(CFG)/cairo-static.lib
+	@echo "Built successfully!"
+	@echo "You should copy the following files to a proper place now:"
+	@echo ""
+	@echo "	cairo-version.h (NOTE: toplevel, not the src/cairo-version.h one!)"
+	@echo "	src/cairo-features.h"
+	@for x in $(enabled_cairo_headers); do echo "	src/$$x"; done
+	@echo "	src/$(CFG)/cairo.dll"
+	@echo "	src/$(CFG)/cairo-static.lib"
diff --git a/libs/cairo-1.16.0/src/Makefile.win32.features b/libs/cairo-1.16.0/src/Makefile.win32.features
new file mode 100644
index 0000000..377d6dd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/Makefile.win32.features
@@ -0,0 +1,661 @@
+# Generated by configure.  Do not edit.
+
+ifeq ($(top_srcdir),)
+include Makefile.sources
+else
+include $(top_srcdir)/src/Makefile.sources
+endif
+
+supported_cairo_headers = $(cairo_headers)
+unsupported_cairo_headers =
+all_cairo_headers = $(cairo_headers)
+all_cairo_private = $(cairo_private)
+all_cairo_cxx_sources = $(cairo_cxx_sources)
+all_cairo_sources = $(cairo_sources)
+
+enabled_cairo_headers = $(cairo_headers)
+enabled_cairo_private = $(cairo_private)
+enabled_cairo_cxx_sources = $(cairo_cxx_sources)
+enabled_cairo_sources = $(cairo_sources)
+
+all_cairo_pkgconf = cairo.pc
+enabled_cairo_pkgconf = cairo.pc
+
+supported_cairo_headers += $(cairo_xlib_headers)
+all_cairo_headers += $(cairo_xlib_headers)
+all_cairo_private += $(cairo_xlib_private)
+all_cairo_cxx_sources += $(cairo_xlib_cxx_sources)
+all_cairo_sources += $(cairo_xlib_sources)
+ifeq ($(CAIRO_HAS_XLIB_SURFACE),1)
+enabled_cairo_headers += $(cairo_xlib_headers)
+enabled_cairo_private += $(cairo_xlib_private)
+enabled_cairo_cxx_sources += $(cairo_xlib_cxx_sources)
+enabled_cairo_sources += $(cairo_xlib_sources)
+endif
+all_cairo_pkgconf += cairo-xlib.pc
+ifeq ($(CAIRO_HAS_XLIB_SURFACE),1)
+enabled_cairo_pkgconf += cairo-xlib.pc
+endif
+
+supported_cairo_headers += $(cairo_xlib_xrender_headers)
+all_cairo_headers += $(cairo_xlib_xrender_headers)
+all_cairo_private += $(cairo_xlib_xrender_private)
+all_cairo_cxx_sources += $(cairo_xlib_xrender_cxx_sources)
+all_cairo_sources += $(cairo_xlib_xrender_sources)
+ifeq ($(CAIRO_HAS_XLIB_XRENDER_SURFACE),1)
+enabled_cairo_headers += $(cairo_xlib_xrender_headers)
+enabled_cairo_private += $(cairo_xlib_xrender_private)
+enabled_cairo_cxx_sources += $(cairo_xlib_xrender_cxx_sources)
+enabled_cairo_sources += $(cairo_xlib_xrender_sources)
+endif
+all_cairo_pkgconf += cairo-xlib-xrender.pc
+ifeq ($(CAIRO_HAS_XLIB_XRENDER_SURFACE),1)
+enabled_cairo_pkgconf += cairo-xlib-xrender.pc
+endif
+
+supported_cairo_headers += $(cairo_xcb_headers)
+all_cairo_headers += $(cairo_xcb_headers)
+all_cairo_private += $(cairo_xcb_private)
+all_cairo_cxx_sources += $(cairo_xcb_cxx_sources)
+all_cairo_sources += $(cairo_xcb_sources)
+ifeq ($(CAIRO_HAS_XCB_SURFACE),1)
+enabled_cairo_headers += $(cairo_xcb_headers)
+enabled_cairo_private += $(cairo_xcb_private)
+enabled_cairo_cxx_sources += $(cairo_xcb_cxx_sources)
+enabled_cairo_sources += $(cairo_xcb_sources)
+endif
+all_cairo_pkgconf += cairo-xcb.pc
+ifeq ($(CAIRO_HAS_XCB_SURFACE),1)
+enabled_cairo_pkgconf += cairo-xcb.pc
+endif
+
+unsupported_cairo_headers += $(cairo_xlib_xcb_headers)
+all_cairo_headers += $(cairo_xlib_xcb_headers)
+all_cairo_private += $(cairo_xlib_xcb_private)
+all_cairo_cxx_sources += $(cairo_xlib_xcb_cxx_sources)
+all_cairo_sources += $(cairo_xlib_xcb_sources)
+ifeq ($(CAIRO_HAS_XLIB_XCB_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_xlib_xcb_headers)
+enabled_cairo_private += $(cairo_xlib_xcb_private)
+enabled_cairo_cxx_sources += $(cairo_xlib_xcb_cxx_sources)
+enabled_cairo_sources += $(cairo_xlib_xcb_sources)
+endif
+all_cairo_pkgconf += cairo-xlib-xcb.pc
+ifeq ($(CAIRO_HAS_XLIB_XCB_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-xlib-xcb.pc
+endif
+
+supported_cairo_headers += $(cairo_xcb_shm_headers)
+all_cairo_headers += $(cairo_xcb_shm_headers)
+all_cairo_private += $(cairo_xcb_shm_private)
+all_cairo_cxx_sources += $(cairo_xcb_shm_cxx_sources)
+all_cairo_sources += $(cairo_xcb_shm_sources)
+ifeq ($(CAIRO_HAS_XCB_SHM_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_xcb_shm_headers)
+enabled_cairo_private += $(cairo_xcb_shm_private)
+enabled_cairo_cxx_sources += $(cairo_xcb_shm_cxx_sources)
+enabled_cairo_sources += $(cairo_xcb_shm_sources)
+endif
+all_cairo_pkgconf += cairo-xcb-shm.pc
+ifeq ($(CAIRO_HAS_XCB_SHM_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-xcb-shm.pc
+endif
+
+unsupported_cairo_headers += $(cairo_qt_headers)
+all_cairo_headers += $(cairo_qt_headers)
+all_cairo_private += $(cairo_qt_private)
+all_cairo_cxx_sources += $(cairo_qt_cxx_sources)
+all_cairo_sources += $(cairo_qt_sources)
+ifeq ($(CAIRO_HAS_QT_SURFACE),1)
+enabled_cairo_headers += $(cairo_qt_headers)
+enabled_cairo_private += $(cairo_qt_private)
+enabled_cairo_cxx_sources += $(cairo_qt_cxx_sources)
+enabled_cairo_sources += $(cairo_qt_sources)
+endif
+all_cairo_pkgconf += cairo-qt.pc
+ifeq ($(CAIRO_HAS_QT_SURFACE),1)
+enabled_cairo_pkgconf += cairo-qt.pc
+endif
+
+supported_cairo_headers += $(cairo_quartz_headers)
+all_cairo_headers += $(cairo_quartz_headers)
+all_cairo_private += $(cairo_quartz_private)
+all_cairo_cxx_sources += $(cairo_quartz_cxx_sources)
+all_cairo_sources += $(cairo_quartz_sources)
+ifeq ($(CAIRO_HAS_QUARTZ_SURFACE),1)
+enabled_cairo_headers += $(cairo_quartz_headers)
+enabled_cairo_private += $(cairo_quartz_private)
+enabled_cairo_cxx_sources += $(cairo_quartz_cxx_sources)
+enabled_cairo_sources += $(cairo_quartz_sources)
+endif
+all_cairo_pkgconf += cairo-quartz.pc
+ifeq ($(CAIRO_HAS_QUARTZ_SURFACE),1)
+enabled_cairo_pkgconf += cairo-quartz.pc
+endif
+
+supported_cairo_headers += $(cairo_quartz_font_headers)
+all_cairo_headers += $(cairo_quartz_font_headers)
+all_cairo_private += $(cairo_quartz_font_private)
+all_cairo_cxx_sources += $(cairo_quartz_font_cxx_sources)
+all_cairo_sources += $(cairo_quartz_font_sources)
+ifeq ($(CAIRO_HAS_QUARTZ_FONT),1)
+enabled_cairo_headers += $(cairo_quartz_font_headers)
+enabled_cairo_private += $(cairo_quartz_font_private)
+enabled_cairo_cxx_sources += $(cairo_quartz_font_cxx_sources)
+enabled_cairo_sources += $(cairo_quartz_font_sources)
+endif
+all_cairo_pkgconf += cairo-quartz-font.pc
+ifeq ($(CAIRO_HAS_QUARTZ_FONT),1)
+enabled_cairo_pkgconf += cairo-quartz-font.pc
+endif
+
+unsupported_cairo_headers += $(cairo_quartz_image_headers)
+all_cairo_headers += $(cairo_quartz_image_headers)
+all_cairo_private += $(cairo_quartz_image_private)
+all_cairo_cxx_sources += $(cairo_quartz_image_cxx_sources)
+all_cairo_sources += $(cairo_quartz_image_sources)
+ifeq ($(CAIRO_HAS_QUARTZ_IMAGE_SURFACE),1)
+enabled_cairo_headers += $(cairo_quartz_image_headers)
+enabled_cairo_private += $(cairo_quartz_image_private)
+enabled_cairo_cxx_sources += $(cairo_quartz_image_cxx_sources)
+enabled_cairo_sources += $(cairo_quartz_image_sources)
+endif
+all_cairo_pkgconf += cairo-quartz-image.pc
+ifeq ($(CAIRO_HAS_QUARTZ_IMAGE_SURFACE),1)
+enabled_cairo_pkgconf += cairo-quartz-image.pc
+endif
+
+supported_cairo_headers += $(cairo_win32_headers)
+all_cairo_headers += $(cairo_win32_headers)
+all_cairo_private += $(cairo_win32_private)
+all_cairo_cxx_sources += $(cairo_win32_cxx_sources)
+all_cairo_sources += $(cairo_win32_sources)
+ifeq ($(CAIRO_HAS_WIN32_SURFACE),1)
+enabled_cairo_headers += $(cairo_win32_headers)
+enabled_cairo_private += $(cairo_win32_private)
+enabled_cairo_cxx_sources += $(cairo_win32_cxx_sources)
+enabled_cairo_sources += $(cairo_win32_sources)
+endif
+all_cairo_pkgconf += cairo-win32.pc
+ifeq ($(CAIRO_HAS_WIN32_SURFACE),1)
+enabled_cairo_pkgconf += cairo-win32.pc
+endif
+
+supported_cairo_headers += $(cairo_win32_font_headers)
+all_cairo_headers += $(cairo_win32_font_headers)
+all_cairo_private += $(cairo_win32_font_private)
+all_cairo_cxx_sources += $(cairo_win32_font_cxx_sources)
+all_cairo_sources += $(cairo_win32_font_sources)
+ifeq ($(CAIRO_HAS_WIN32_FONT),1)
+enabled_cairo_headers += $(cairo_win32_font_headers)
+enabled_cairo_private += $(cairo_win32_font_private)
+enabled_cairo_cxx_sources += $(cairo_win32_font_cxx_sources)
+enabled_cairo_sources += $(cairo_win32_font_sources)
+endif
+all_cairo_pkgconf += cairo-win32-font.pc
+ifeq ($(CAIRO_HAS_WIN32_FONT),1)
+enabled_cairo_pkgconf += cairo-win32-font.pc
+endif
+
+unsupported_cairo_headers += $(cairo_os2_headers)
+all_cairo_headers += $(cairo_os2_headers)
+all_cairo_private += $(cairo_os2_private)
+all_cairo_cxx_sources += $(cairo_os2_cxx_sources)
+all_cairo_sources += $(cairo_os2_sources)
+ifeq ($(CAIRO_HAS_OS2_SURFACE),1)
+enabled_cairo_headers += $(cairo_os2_headers)
+enabled_cairo_private += $(cairo_os2_private)
+enabled_cairo_cxx_sources += $(cairo_os2_cxx_sources)
+enabled_cairo_sources += $(cairo_os2_sources)
+endif
+all_cairo_pkgconf += cairo-os2.pc
+ifeq ($(CAIRO_HAS_OS2_SURFACE),1)
+enabled_cairo_pkgconf += cairo-os2.pc
+endif
+
+unsupported_cairo_headers += $(cairo_beos_headers)
+all_cairo_headers += $(cairo_beos_headers)
+all_cairo_private += $(cairo_beos_private)
+all_cairo_cxx_sources += $(cairo_beos_cxx_sources)
+all_cairo_sources += $(cairo_beos_sources)
+ifeq ($(CAIRO_HAS_BEOS_SURFACE),1)
+enabled_cairo_headers += $(cairo_beos_headers)
+enabled_cairo_private += $(cairo_beos_private)
+enabled_cairo_cxx_sources += $(cairo_beos_cxx_sources)
+enabled_cairo_sources += $(cairo_beos_sources)
+endif
+all_cairo_pkgconf += cairo-beos.pc
+ifeq ($(CAIRO_HAS_BEOS_SURFACE),1)
+enabled_cairo_pkgconf += cairo-beos.pc
+endif
+
+unsupported_cairo_headers += $(cairo_drm_headers)
+all_cairo_headers += $(cairo_drm_headers)
+all_cairo_private += $(cairo_drm_private)
+all_cairo_cxx_sources += $(cairo_drm_cxx_sources)
+all_cairo_sources += $(cairo_drm_sources)
+ifeq ($(CAIRO_HAS_DRM_SURFACE),1)
+enabled_cairo_headers += $(cairo_drm_headers)
+enabled_cairo_private += $(cairo_drm_private)
+enabled_cairo_cxx_sources += $(cairo_drm_cxx_sources)
+enabled_cairo_sources += $(cairo_drm_sources)
+endif
+all_cairo_pkgconf += cairo-drm.pc
+ifeq ($(CAIRO_HAS_DRM_SURFACE),1)
+enabled_cairo_pkgconf += cairo-drm.pc
+endif
+
+unsupported_cairo_headers += $(cairo_gallium_headers)
+all_cairo_headers += $(cairo_gallium_headers)
+all_cairo_private += $(cairo_gallium_private)
+all_cairo_cxx_sources += $(cairo_gallium_cxx_sources)
+all_cairo_sources += $(cairo_gallium_sources)
+ifeq ($(CAIRO_HAS_GALLIUM_SURFACE),1)
+enabled_cairo_headers += $(cairo_gallium_headers)
+enabled_cairo_private += $(cairo_gallium_private)
+enabled_cairo_cxx_sources += $(cairo_gallium_cxx_sources)
+enabled_cairo_sources += $(cairo_gallium_sources)
+endif
+all_cairo_pkgconf += cairo-gallium.pc
+ifeq ($(CAIRO_HAS_GALLIUM_SURFACE),1)
+enabled_cairo_pkgconf += cairo-gallium.pc
+endif
+
+supported_cairo_headers += $(cairo_png_headers)
+all_cairo_headers += $(cairo_png_headers)
+all_cairo_private += $(cairo_png_private)
+all_cairo_cxx_sources += $(cairo_png_cxx_sources)
+all_cairo_sources += $(cairo_png_sources)
+ifeq ($(CAIRO_HAS_PNG_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_png_headers)
+enabled_cairo_private += $(cairo_png_private)
+enabled_cairo_cxx_sources += $(cairo_png_cxx_sources)
+enabled_cairo_sources += $(cairo_png_sources)
+endif
+all_cairo_pkgconf += cairo-png.pc
+ifeq ($(CAIRO_HAS_PNG_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-png.pc
+endif
+
+unsupported_cairo_headers += $(cairo_gl_headers)
+all_cairo_headers += $(cairo_gl_headers)
+all_cairo_private += $(cairo_gl_private)
+all_cairo_cxx_sources += $(cairo_gl_cxx_sources)
+all_cairo_sources += $(cairo_gl_sources)
+ifeq ($(CAIRO_HAS_GL_SURFACE),1)
+enabled_cairo_headers += $(cairo_gl_headers)
+enabled_cairo_private += $(cairo_gl_private)
+enabled_cairo_cxx_sources += $(cairo_gl_cxx_sources)
+enabled_cairo_sources += $(cairo_gl_sources)
+endif
+all_cairo_pkgconf += cairo-gl.pc
+ifeq ($(CAIRO_HAS_GL_SURFACE),1)
+enabled_cairo_pkgconf += cairo-gl.pc
+endif
+
+unsupported_cairo_headers += $(cairo_glesv2_headers)
+all_cairo_headers += $(cairo_glesv2_headers)
+all_cairo_private += $(cairo_glesv2_private)
+all_cairo_cxx_sources += $(cairo_glesv2_cxx_sources)
+all_cairo_sources += $(cairo_glesv2_sources)
+ifeq ($(CAIRO_HAS_GLESV2_SURFACE),1)
+enabled_cairo_headers += $(cairo_glesv2_headers)
+enabled_cairo_private += $(cairo_glesv2_private)
+enabled_cairo_cxx_sources += $(cairo_glesv2_cxx_sources)
+enabled_cairo_sources += $(cairo_glesv2_sources)
+endif
+all_cairo_pkgconf += cairo-glesv2.pc
+ifeq ($(CAIRO_HAS_GLESV2_SURFACE),1)
+enabled_cairo_pkgconf += cairo-glesv2.pc
+endif
+
+unsupported_cairo_headers += $(cairo_glesv3_headers)
+all_cairo_headers += $(cairo_glesv3_headers)
+all_cairo_private += $(cairo_glesv3_private)
+all_cairo_cxx_sources += $(cairo_glesv3_cxx_sources)
+all_cairo_sources += $(cairo_glesv3_sources)
+ifeq ($(CAIRO_HAS_GLESV3_SURFACE),1)
+enabled_cairo_headers += $(cairo_glesv3_headers)
+enabled_cairo_private += $(cairo_glesv3_private)
+enabled_cairo_cxx_sources += $(cairo_glesv3_cxx_sources)
+enabled_cairo_sources += $(cairo_glesv3_sources)
+endif
+all_cairo_pkgconf += cairo-glesv3.pc
+ifeq ($(CAIRO_HAS_GLESV3_SURFACE),1)
+enabled_cairo_pkgconf += cairo-glesv3.pc
+endif
+
+unsupported_cairo_headers += $(cairo_cogl_headers)
+all_cairo_headers += $(cairo_cogl_headers)
+all_cairo_private += $(cairo_cogl_private)
+all_cairo_cxx_sources += $(cairo_cogl_cxx_sources)
+all_cairo_sources += $(cairo_cogl_sources)
+ifeq ($(CAIRO_HAS_COGL_SURFACE),1)
+enabled_cairo_headers += $(cairo_cogl_headers)
+enabled_cairo_private += $(cairo_cogl_private)
+enabled_cairo_cxx_sources += $(cairo_cogl_cxx_sources)
+enabled_cairo_sources += $(cairo_cogl_sources)
+endif
+all_cairo_pkgconf += cairo-cogl.pc
+ifeq ($(CAIRO_HAS_COGL_SURFACE),1)
+enabled_cairo_pkgconf += cairo-cogl.pc
+endif
+
+unsupported_cairo_headers += $(cairo_directfb_headers)
+all_cairo_headers += $(cairo_directfb_headers)
+all_cairo_private += $(cairo_directfb_private)
+all_cairo_cxx_sources += $(cairo_directfb_cxx_sources)
+all_cairo_sources += $(cairo_directfb_sources)
+ifeq ($(CAIRO_HAS_DIRECTFB_SURFACE),1)
+enabled_cairo_headers += $(cairo_directfb_headers)
+enabled_cairo_private += $(cairo_directfb_private)
+enabled_cairo_cxx_sources += $(cairo_directfb_cxx_sources)
+enabled_cairo_sources += $(cairo_directfb_sources)
+endif
+all_cairo_pkgconf += cairo-directfb.pc
+ifeq ($(CAIRO_HAS_DIRECTFB_SURFACE),1)
+enabled_cairo_pkgconf += cairo-directfb.pc
+endif
+
+unsupported_cairo_headers += $(cairo_vg_headers)
+all_cairo_headers += $(cairo_vg_headers)
+all_cairo_private += $(cairo_vg_private)
+all_cairo_cxx_sources += $(cairo_vg_cxx_sources)
+all_cairo_sources += $(cairo_vg_sources)
+ifeq ($(CAIRO_HAS_VG_SURFACE),1)
+enabled_cairo_headers += $(cairo_vg_headers)
+enabled_cairo_private += $(cairo_vg_private)
+enabled_cairo_cxx_sources += $(cairo_vg_cxx_sources)
+enabled_cairo_sources += $(cairo_vg_sources)
+endif
+all_cairo_pkgconf += cairo-vg.pc
+ifeq ($(CAIRO_HAS_VG_SURFACE),1)
+enabled_cairo_pkgconf += cairo-vg.pc
+endif
+
+supported_cairo_headers += $(cairo_egl_headers)
+all_cairo_headers += $(cairo_egl_headers)
+all_cairo_private += $(cairo_egl_private)
+all_cairo_cxx_sources += $(cairo_egl_cxx_sources)
+all_cairo_sources += $(cairo_egl_sources)
+ifeq ($(CAIRO_HAS_EGL_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_egl_headers)
+enabled_cairo_private += $(cairo_egl_private)
+enabled_cairo_cxx_sources += $(cairo_egl_cxx_sources)
+enabled_cairo_sources += $(cairo_egl_sources)
+endif
+all_cairo_pkgconf += cairo-egl.pc
+ifeq ($(CAIRO_HAS_EGL_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-egl.pc
+endif
+
+supported_cairo_headers += $(cairo_glx_headers)
+all_cairo_headers += $(cairo_glx_headers)
+all_cairo_private += $(cairo_glx_private)
+all_cairo_cxx_sources += $(cairo_glx_cxx_sources)
+all_cairo_sources += $(cairo_glx_sources)
+ifeq ($(CAIRO_HAS_GLX_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_glx_headers)
+enabled_cairo_private += $(cairo_glx_private)
+enabled_cairo_cxx_sources += $(cairo_glx_cxx_sources)
+enabled_cairo_sources += $(cairo_glx_sources)
+endif
+all_cairo_pkgconf += cairo-glx.pc
+ifeq ($(CAIRO_HAS_GLX_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-glx.pc
+endif
+
+supported_cairo_headers += $(cairo_wgl_headers)
+all_cairo_headers += $(cairo_wgl_headers)
+all_cairo_private += $(cairo_wgl_private)
+all_cairo_cxx_sources += $(cairo_wgl_cxx_sources)
+all_cairo_sources += $(cairo_wgl_sources)
+ifeq ($(CAIRO_HAS_WGL_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_wgl_headers)
+enabled_cairo_private += $(cairo_wgl_private)
+enabled_cairo_cxx_sources += $(cairo_wgl_cxx_sources)
+enabled_cairo_sources += $(cairo_wgl_sources)
+endif
+all_cairo_pkgconf += cairo-wgl.pc
+ifeq ($(CAIRO_HAS_WGL_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-wgl.pc
+endif
+
+supported_cairo_headers += $(cairo_script_headers)
+all_cairo_headers += $(cairo_script_headers)
+all_cairo_private += $(cairo_script_private)
+all_cairo_cxx_sources += $(cairo_script_cxx_sources)
+all_cairo_sources += $(cairo_script_sources)
+ifeq ($(CAIRO_HAS_SCRIPT_SURFACE),1)
+enabled_cairo_headers += $(cairo_script_headers)
+enabled_cairo_private += $(cairo_script_private)
+enabled_cairo_cxx_sources += $(cairo_script_cxx_sources)
+enabled_cairo_sources += $(cairo_script_sources)
+endif
+all_cairo_pkgconf += cairo-script.pc
+ifeq ($(CAIRO_HAS_SCRIPT_SURFACE),1)
+enabled_cairo_pkgconf += cairo-script.pc
+endif
+
+supported_cairo_headers += $(cairo_ft_headers)
+all_cairo_headers += $(cairo_ft_headers)
+all_cairo_private += $(cairo_ft_private)
+all_cairo_cxx_sources += $(cairo_ft_cxx_sources)
+all_cairo_sources += $(cairo_ft_sources)
+ifeq ($(CAIRO_HAS_FT_FONT),1)
+enabled_cairo_headers += $(cairo_ft_headers)
+enabled_cairo_private += $(cairo_ft_private)
+enabled_cairo_cxx_sources += $(cairo_ft_cxx_sources)
+enabled_cairo_sources += $(cairo_ft_sources)
+endif
+all_cairo_pkgconf += cairo-ft.pc
+ifeq ($(CAIRO_HAS_FT_FONT),1)
+enabled_cairo_pkgconf += cairo-ft.pc
+endif
+
+supported_cairo_headers += $(cairo_fc_headers)
+all_cairo_headers += $(cairo_fc_headers)
+all_cairo_private += $(cairo_fc_private)
+all_cairo_cxx_sources += $(cairo_fc_cxx_sources)
+all_cairo_sources += $(cairo_fc_sources)
+ifeq ($(CAIRO_HAS_FC_FONT),1)
+enabled_cairo_headers += $(cairo_fc_headers)
+enabled_cairo_private += $(cairo_fc_private)
+enabled_cairo_cxx_sources += $(cairo_fc_cxx_sources)
+enabled_cairo_sources += $(cairo_fc_sources)
+endif
+all_cairo_pkgconf += cairo-fc.pc
+ifeq ($(CAIRO_HAS_FC_FONT),1)
+enabled_cairo_pkgconf += cairo-fc.pc
+endif
+
+supported_cairo_headers += $(cairo_ps_headers)
+all_cairo_headers += $(cairo_ps_headers)
+all_cairo_private += $(cairo_ps_private)
+all_cairo_cxx_sources += $(cairo_ps_cxx_sources)
+all_cairo_sources += $(cairo_ps_sources)
+ifeq ($(CAIRO_HAS_PS_SURFACE),1)
+enabled_cairo_headers += $(cairo_ps_headers)
+enabled_cairo_private += $(cairo_ps_private)
+enabled_cairo_cxx_sources += $(cairo_ps_cxx_sources)
+enabled_cairo_sources += $(cairo_ps_sources)
+endif
+all_cairo_pkgconf += cairo-ps.pc
+ifeq ($(CAIRO_HAS_PS_SURFACE),1)
+enabled_cairo_pkgconf += cairo-ps.pc
+endif
+
+supported_cairo_headers += $(cairo_pdf_headers)
+all_cairo_headers += $(cairo_pdf_headers)
+all_cairo_private += $(cairo_pdf_private)
+all_cairo_cxx_sources += $(cairo_pdf_cxx_sources)
+all_cairo_sources += $(cairo_pdf_sources)
+ifeq ($(CAIRO_HAS_PDF_SURFACE),1)
+enabled_cairo_headers += $(cairo_pdf_headers)
+enabled_cairo_private += $(cairo_pdf_private)
+enabled_cairo_cxx_sources += $(cairo_pdf_cxx_sources)
+enabled_cairo_sources += $(cairo_pdf_sources)
+endif
+all_cairo_pkgconf += cairo-pdf.pc
+ifeq ($(CAIRO_HAS_PDF_SURFACE),1)
+enabled_cairo_pkgconf += cairo-pdf.pc
+endif
+
+supported_cairo_headers += $(cairo_svg_headers)
+all_cairo_headers += $(cairo_svg_headers)
+all_cairo_private += $(cairo_svg_private)
+all_cairo_cxx_sources += $(cairo_svg_cxx_sources)
+all_cairo_sources += $(cairo_svg_sources)
+ifeq ($(CAIRO_HAS_SVG_SURFACE),1)
+enabled_cairo_headers += $(cairo_svg_headers)
+enabled_cairo_private += $(cairo_svg_private)
+enabled_cairo_cxx_sources += $(cairo_svg_cxx_sources)
+enabled_cairo_sources += $(cairo_svg_sources)
+endif
+all_cairo_pkgconf += cairo-svg.pc
+ifeq ($(CAIRO_HAS_SVG_SURFACE),1)
+enabled_cairo_pkgconf += cairo-svg.pc
+endif
+
+all_cairo_private += $(cairo_test_surfaces_private) $(cairo_test_surfaces_headers)
+all_cairo_cxx_sources += $(cairo_test_surfaces_cxx_sources)
+all_cairo_sources += $(cairo_test_surfaces_sources)
+ifeq ($(CAIRO_HAS_TEST_SURFACES),1)
+enabled_cairo_private += $(cairo_test_surfaces_private) $(cairo_test_surfaces_headers)
+enabled_cairo_cxx_sources += $(cairo_test_surfaces_cxx_sources)
+enabled_cairo_sources += $(cairo_test_surfaces_sources)
+endif
+
+supported_cairo_headers += $(cairo_image_headers)
+all_cairo_headers += $(cairo_image_headers)
+all_cairo_private += $(cairo_image_private)
+all_cairo_cxx_sources += $(cairo_image_cxx_sources)
+all_cairo_sources += $(cairo_image_sources)
+enabled_cairo_headers += $(cairo_image_headers)
+enabled_cairo_private += $(cairo_image_private)
+enabled_cairo_cxx_sources += $(cairo_image_cxx_sources)
+enabled_cairo_sources += $(cairo_image_sources)
+
+supported_cairo_headers += $(cairo_mime_headers)
+all_cairo_headers += $(cairo_mime_headers)
+all_cairo_private += $(cairo_mime_private)
+all_cairo_cxx_sources += $(cairo_mime_cxx_sources)
+all_cairo_sources += $(cairo_mime_sources)
+enabled_cairo_headers += $(cairo_mime_headers)
+enabled_cairo_private += $(cairo_mime_private)
+enabled_cairo_cxx_sources += $(cairo_mime_cxx_sources)
+enabled_cairo_sources += $(cairo_mime_sources)
+
+supported_cairo_headers += $(cairo_recording_headers)
+all_cairo_headers += $(cairo_recording_headers)
+all_cairo_private += $(cairo_recording_private)
+all_cairo_cxx_sources += $(cairo_recording_cxx_sources)
+all_cairo_sources += $(cairo_recording_sources)
+enabled_cairo_headers += $(cairo_recording_headers)
+enabled_cairo_private += $(cairo_recording_private)
+enabled_cairo_cxx_sources += $(cairo_recording_cxx_sources)
+enabled_cairo_sources += $(cairo_recording_sources)
+
+supported_cairo_headers += $(cairo_observer_headers)
+all_cairo_headers += $(cairo_observer_headers)
+all_cairo_private += $(cairo_observer_private)
+all_cairo_cxx_sources += $(cairo_observer_cxx_sources)
+all_cairo_sources += $(cairo_observer_sources)
+enabled_cairo_headers += $(cairo_observer_headers)
+enabled_cairo_private += $(cairo_observer_private)
+enabled_cairo_cxx_sources += $(cairo_observer_cxx_sources)
+enabled_cairo_sources += $(cairo_observer_sources)
+
+unsupported_cairo_headers += $(cairo_tee_headers)
+all_cairo_headers += $(cairo_tee_headers)
+all_cairo_private += $(cairo_tee_private)
+all_cairo_cxx_sources += $(cairo_tee_cxx_sources)
+all_cairo_sources += $(cairo_tee_sources)
+ifeq ($(CAIRO_HAS_TEE_SURFACE),1)
+enabled_cairo_headers += $(cairo_tee_headers)
+enabled_cairo_private += $(cairo_tee_private)
+enabled_cairo_cxx_sources += $(cairo_tee_cxx_sources)
+enabled_cairo_sources += $(cairo_tee_sources)
+endif
+all_cairo_pkgconf += cairo-tee.pc
+ifeq ($(CAIRO_HAS_TEE_SURFACE),1)
+enabled_cairo_pkgconf += cairo-tee.pc
+endif
+
+unsupported_cairo_headers += $(cairo_xml_headers)
+all_cairo_headers += $(cairo_xml_headers)
+all_cairo_private += $(cairo_xml_private)
+all_cairo_cxx_sources += $(cairo_xml_cxx_sources)
+all_cairo_sources += $(cairo_xml_sources)
+ifeq ($(CAIRO_HAS_XML_SURFACE),1)
+enabled_cairo_headers += $(cairo_xml_headers)
+enabled_cairo_private += $(cairo_xml_private)
+enabled_cairo_cxx_sources += $(cairo_xml_cxx_sources)
+enabled_cairo_sources += $(cairo_xml_sources)
+endif
+all_cairo_pkgconf += cairo-xml.pc
+ifeq ($(CAIRO_HAS_XML_SURFACE),1)
+enabled_cairo_pkgconf += cairo-xml.pc
+endif
+
+supported_cairo_headers += $(cairo_user_headers)
+all_cairo_headers += $(cairo_user_headers)
+all_cairo_private += $(cairo_user_private)
+all_cairo_cxx_sources += $(cairo_user_cxx_sources)
+all_cairo_sources += $(cairo_user_sources)
+enabled_cairo_headers += $(cairo_user_headers)
+enabled_cairo_private += $(cairo_user_private)
+enabled_cairo_cxx_sources += $(cairo_user_cxx_sources)
+enabled_cairo_sources += $(cairo_user_sources)
+
+all_cairo_private += $(cairo_pthread_private) $(cairo_pthread_headers)
+all_cairo_cxx_sources += $(cairo_pthread_cxx_sources)
+all_cairo_sources += $(cairo_pthread_sources)
+ifeq ($(CAIRO_HAS_PTHREAD),1)
+enabled_cairo_private += $(cairo_pthread_private) $(cairo_pthread_headers)
+enabled_cairo_cxx_sources += $(cairo_pthread_cxx_sources)
+enabled_cairo_sources += $(cairo_pthread_sources)
+endif
+
+supported_cairo_headers += $(cairo_gobject_headers)
+all_cairo_headers += $(cairo_gobject_headers)
+all_cairo_private += $(cairo_gobject_private)
+all_cairo_cxx_sources += $(cairo_gobject_cxx_sources)
+all_cairo_sources += $(cairo_gobject_sources)
+ifeq ($(CAIRO_HAS_GOBJECT_FUNCTIONS),1)
+enabled_cairo_headers += $(cairo_gobject_headers)
+enabled_cairo_private += $(cairo_gobject_private)
+enabled_cairo_cxx_sources += $(cairo_gobject_cxx_sources)
+enabled_cairo_sources += $(cairo_gobject_sources)
+endif
+all_cairo_pkgconf += cairo-gobject.pc
+ifeq ($(CAIRO_HAS_GOBJECT_FUNCTIONS),1)
+enabled_cairo_pkgconf += cairo-gobject.pc
+endif
+
+all_cairo_private += $(cairo_trace_private) $(cairo_trace_headers)
+all_cairo_cxx_sources += $(cairo_trace_cxx_sources)
+all_cairo_sources += $(cairo_trace_sources)
+ifeq ($(CAIRO_HAS_TRACE),1)
+enabled_cairo_private += $(cairo_trace_private) $(cairo_trace_headers)
+enabled_cairo_cxx_sources += $(cairo_trace_cxx_sources)
+enabled_cairo_sources += $(cairo_trace_sources)
+endif
+
+all_cairo_private += $(cairo_interpreter_private) $(cairo_interpreter_headers)
+all_cairo_cxx_sources += $(cairo_interpreter_cxx_sources)
+all_cairo_sources += $(cairo_interpreter_sources)
+ifeq ($(CAIRO_HAS_INTERPRETER),1)
+enabled_cairo_private += $(cairo_interpreter_private) $(cairo_interpreter_headers)
+enabled_cairo_cxx_sources += $(cairo_interpreter_cxx_sources)
+enabled_cairo_sources += $(cairo_interpreter_sources)
+endif
+
+all_cairo_private += $(cairo_symbol_lookup_private) $(cairo_symbol_lookup_headers)
+all_cairo_cxx_sources += $(cairo_symbol_lookup_cxx_sources)
+all_cairo_sources += $(cairo_symbol_lookup_sources)
+ifeq ($(CAIRO_HAS_SYMBOL_LOOKUP),1)
+enabled_cairo_private += $(cairo_symbol_lookup_private) $(cairo_symbol_lookup_headers)
+enabled_cairo_cxx_sources += $(cairo_symbol_lookup_cxx_sources)
+enabled_cairo_sources += $(cairo_symbol_lookup_sources)
+endif
diff --git a/libs/cairo-1.16.0/src/README b/libs/cairo-1.16.0/src/README
new file mode 100644
index 0000000..03e4455
--- /dev/null
+++ b/libs/cairo-1.16.0/src/README
@@ -0,0 +1,69 @@
+Cairo Library Source Code
+=========================
+
+This directory contains the source code of the cairo library.
+
+
+Source Code Listing
+-------------------
+
+The canonical list of source files is the file Makefile.sources.  See that
+file for how it works.
+
+
+New Backends
+------------
+
+The rule of the thumb for adding new backends is to see how other
+backends are integrated.  Pick one of the simpler, unsupported, backends
+and search the entire tree for it, and go from there.
+
+To add new backends you need to basically:
+
+  * Modify $(top_srcdir)/configure.in to add checks for your backend.
+
+  * Modify Makefile.sources to add source files for your backend,
+
+  * Modify $(top_srcdir)/boilerplate/ to add boilerplate code for
+    testing your new backend.
+
+
+New API
+-------
+
+After adding new API, run "make check" in this directory and fix any
+reported issues.  Also add new API to the right location in
+$(top_srcdir)/doc/public/cairo-sections.txt and run "make check"
+in $(top_builddir)/doc/public to make sure that any newly added
+documentation is correctly hooked up.
+
+Do not forget to add tests for the new API.  See next section.
+
+
+Tests
+-----
+
+There are some tests in this directory that check the source code and
+the build for various issues.  The tests are very quick to run, and
+particularly should be run after any documentation or API changes.  It
+does not hurt to run them after any source modification either.  Run
+them simply by calling:
+
+	make check
+
+There are also extensive regression tests in $(top_srcdir)/test.  It is
+a good idea to run that test suite for any changes made to the source
+code.  Moreover, for any new feature, API, or bug fix, new tests should
+be added to the regression test suite to test the new code.
+
+
+Bibliography
+------------
+
+A detailed list of academic publications used in cairo code is available
+in the file $(top_srcdir)/BIBLIOGRAPHY.  Feel free to update as you
+implement more papers.
+
+For more technical publications (eg. Adobe technical reports) just
+point them out in a comment in the header of the file implementing them.
+
diff --git a/libs/cairo-1.16.0/src/cairo-analysis-surface-private.h b/libs/cairo-1.16.0/src/cairo-analysis-surface-private.h
new file mode 100644
index 0000000..1e054c2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-analysis-surface-private.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright © 2005 Keith Packard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ */
+
+#ifndef CAIRO_ANALYSIS_SURFACE_H
+#define CAIRO_ANALYSIS_SURFACE_H
+
+#include "cairoint.h"
+
+cairo_private cairo_surface_t *
+_cairo_analysis_surface_create (cairo_surface_t		*target);
+
+cairo_private void
+_cairo_analysis_surface_set_ctm (cairo_surface_t *surface,
+				 const cairo_matrix_t  *ctm);
+
+cairo_private void
+_cairo_analysis_surface_get_ctm (cairo_surface_t *surface,
+				 cairo_matrix_t  *ctm);
+
+cairo_private cairo_region_t *
+_cairo_analysis_surface_get_supported (cairo_surface_t *surface);
+
+cairo_private cairo_region_t *
+_cairo_analysis_surface_get_unsupported (cairo_surface_t *surface);
+
+cairo_private cairo_bool_t
+_cairo_analysis_surface_has_supported (cairo_surface_t *surface);
+
+cairo_private cairo_bool_t
+_cairo_analysis_surface_has_unsupported (cairo_surface_t *surface);
+
+cairo_private void
+_cairo_analysis_surface_get_bounding_box (cairo_surface_t *surface,
+					  cairo_box_t     *bbox);
+
+cairo_private cairo_int_status_t
+_cairo_analysis_surface_merge_status (cairo_int_status_t status_a,
+				      cairo_int_status_t status_b);
+
+cairo_private cairo_surface_t *
+_cairo_null_surface_create (cairo_content_t content);
+
+#endif /* CAIRO_ANALYSIS_SURFACE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-analysis-surface.c b/libs/cairo-1.16.0/src/cairo-analysis-surface.c
new file mode 100644
index 0000000..c4f9a6d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-analysis-surface.c
@@ -0,0 +1,1036 @@
+/*
+ * Copyright © 2006 Keith Packard
+ * Copyright © 2007 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *      Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-analysis-surface-private.h"
+#include "cairo-box-inline.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-inline.h"
+#include "cairo-region-private.h"
+
+typedef struct {
+    cairo_surface_t base;
+
+    cairo_surface_t *target;
+
+    cairo_bool_t first_op;
+    cairo_bool_t has_supported;
+    cairo_bool_t has_unsupported;
+
+    cairo_region_t supported_region;
+    cairo_region_t fallback_region;
+    cairo_box_t page_bbox;
+
+    cairo_bool_t has_ctm;
+    cairo_matrix_t ctm;
+
+} cairo_analysis_surface_t;
+
+cairo_int_status_t
+_cairo_analysis_surface_merge_status (cairo_int_status_t status_a,
+				      cairo_int_status_t status_b)
+{
+    /* fatal errors should be checked and propagated at source */
+    assert (! _cairo_int_status_is_error (status_a));
+    assert (! _cairo_int_status_is_error (status_b));
+
+    /* return the most important status */
+    if (status_a == CAIRO_INT_STATUS_UNSUPPORTED ||
+	status_b == CAIRO_INT_STATUS_UNSUPPORTED)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (status_a == CAIRO_INT_STATUS_IMAGE_FALLBACK ||
+	status_b == CAIRO_INT_STATUS_IMAGE_FALLBACK)
+	return CAIRO_INT_STATUS_IMAGE_FALLBACK;
+
+    if (status_a == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN ||
+	status_b == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN)
+	return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
+
+    if (status_a == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY ||
+	status_b == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY)
+	return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+
+    /* at this point we have checked all the valid internal codes, so... */
+    assert (status_a == CAIRO_INT_STATUS_SUCCESS &&
+	    status_b == CAIRO_INT_STATUS_SUCCESS);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+struct proxy {
+    cairo_surface_t base;
+    cairo_surface_t *target;
+};
+
+static cairo_status_t
+proxy_finish (void *abstract_surface)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t proxy_backend  = {
+    CAIRO_INTERNAL_SURFACE_TYPE_NULL,
+    proxy_finish,
+};
+
+static cairo_surface_t *
+attach_proxy (cairo_surface_t *source,
+	      cairo_surface_t *target)
+{
+    struct proxy *proxy;
+
+    proxy = _cairo_malloc (sizeof (*proxy));
+    if (unlikely (proxy == NULL))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_surface_init (&proxy->base, &proxy_backend, NULL, target->content, target->is_vector);
+
+    proxy->target = target;
+    _cairo_surface_attach_snapshot (source, &proxy->base, NULL);
+
+    return &proxy->base;
+}
+
+static void
+detach_proxy (cairo_surface_t *proxy)
+{
+    cairo_surface_finish (proxy);
+    cairo_surface_destroy (proxy);
+}
+
+static cairo_int_status_t
+_add_operation (cairo_analysis_surface_t *surface,
+		cairo_rectangle_int_t    *rect,
+		cairo_int_status_t        backend_status)
+{
+    cairo_int_status_t status;
+    cairo_box_t bbox;
+
+    if (rect->width == 0 || rect->height == 0) {
+	/* Even though the operation is not visible we must be careful
+	 * to not allow unsupported operations to be replayed to the
+	 * backend during CAIRO_PAGINATED_MODE_RENDER */
+	if (backend_status == CAIRO_INT_STATUS_SUCCESS ||
+	    backend_status == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY ||
+	    backend_status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+	{
+	    return CAIRO_INT_STATUS_SUCCESS;
+	}
+	else
+	{
+	    return CAIRO_INT_STATUS_IMAGE_FALLBACK;
+	}
+    }
+
+    _cairo_box_from_rectangle (&bbox, rect);
+
+    if (surface->has_ctm) {
+	int tx, ty;
+
+	if (_cairo_matrix_is_integer_translation (&surface->ctm, &tx, &ty)) {
+	    rect->x += tx;
+	    rect->y += ty;
+
+	    tx = _cairo_fixed_from_int (tx);
+	    bbox.p1.x += tx;
+	    bbox.p2.x += tx;
+
+	    ty = _cairo_fixed_from_int (ty);
+	    bbox.p1.y += ty;
+	    bbox.p2.y += ty;
+	} else {
+	    _cairo_matrix_transform_bounding_box_fixed (&surface->ctm,
+							&bbox, NULL);
+
+	    if (bbox.p1.x == bbox.p2.x || bbox.p1.y == bbox.p2.y) {
+		/* Even though the operation is not visible we must be
+		 * careful to not allow unsupported operations to be
+		 * replayed to the backend during
+		 * CAIRO_PAGINATED_MODE_RENDER */
+		if (backend_status == CAIRO_INT_STATUS_SUCCESS ||
+		    backend_status == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY ||
+		    backend_status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+		{
+		    return CAIRO_INT_STATUS_SUCCESS;
+		}
+		else
+		{
+		    return CAIRO_INT_STATUS_IMAGE_FALLBACK;
+		}
+	    }
+
+	    _cairo_box_round_to_rectangle (&bbox, rect);
+	}
+    }
+
+    if (surface->first_op) {
+	surface->first_op = FALSE;
+	surface->page_bbox = bbox;
+    } else
+	_cairo_box_add_box(&surface->page_bbox, &bbox);
+
+    /* If the operation is completely enclosed within the fallback
+     * region there is no benefit in emitting a native operation as
+     * the fallback image will be painted on top.
+     */
+    if (cairo_region_contains_rectangle (&surface->fallback_region, rect) == CAIRO_REGION_OVERLAP_IN)
+	return CAIRO_INT_STATUS_IMAGE_FALLBACK;
+
+    if (backend_status == CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY) {
+	/* A status of CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY indicates
+	 * that the backend only supports this operation if the
+	 * transparency removed. If the extents of this operation does
+	 * not intersect any other native operation, the operation is
+	 * natively supported and the backend will blend the
+	 * transparency into the white background.
+	 */
+	if (cairo_region_contains_rectangle (&surface->supported_region, rect) == CAIRO_REGION_OVERLAP_OUT)
+	    backend_status = CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    if (backend_status == CAIRO_INT_STATUS_SUCCESS) {
+	/* Add the operation to the supported region. Operations in
+	 * this region will be emitted as native operations.
+	 */
+	surface->has_supported = TRUE;
+	return cairo_region_union_rectangle (&surface->supported_region, rect);
+    }
+
+    /* Add the operation to the unsupported region. This region will
+     * be painted as an image after all native operations have been
+     * emitted.
+     */
+    surface->has_unsupported = TRUE;
+    status = cairo_region_union_rectangle (&surface->fallback_region, rect);
+
+    /* The status CAIRO_INT_STATUS_IMAGE_FALLBACK is used to indicate
+     * unsupported operations to the recording surface as using
+     * CAIRO_INT_STATUS_UNSUPPORTED would cause cairo-surface to
+     * invoke the cairo-surface-fallback path then return
+     * CAIRO_STATUS_SUCCESS.
+     */
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	return CAIRO_INT_STATUS_IMAGE_FALLBACK;
+    else
+	return status;
+}
+
+static cairo_int_status_t
+_analyze_recording_surface_pattern (cairo_analysis_surface_t *surface,
+				    const cairo_pattern_t    *pattern,
+				    cairo_rectangle_int_t    *extents)
+{
+    const cairo_surface_pattern_t *surface_pattern;
+    cairo_analysis_surface_t *tmp;
+    cairo_surface_t *source, *proxy;
+    cairo_matrix_t p2d;
+    cairo_int_status_t status;
+    cairo_int_status_t analysis_status = CAIRO_INT_STATUS_SUCCESS;
+    cairo_bool_t surface_is_unbounded;
+    cairo_bool_t unused;
+
+    assert (pattern->type == CAIRO_PATTERN_TYPE_SURFACE);
+    surface_pattern = (const cairo_surface_pattern_t *) pattern;
+    assert (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING);
+    source = surface_pattern->surface;
+
+    proxy = _cairo_surface_has_snapshot (source, &proxy_backend);
+    if (proxy != NULL) {
+	/* nothing untoward found so far */
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    tmp = (cairo_analysis_surface_t *)
+	_cairo_analysis_surface_create (surface->target);
+    if (unlikely (tmp->base.status)) {
+	status =tmp->base.status;
+	goto cleanup1;
+    }
+    proxy = attach_proxy (source, &tmp->base);
+
+    p2d = pattern->matrix;
+    status = cairo_matrix_invert (&p2d);
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+    _cairo_analysis_surface_set_ctm (&tmp->base, &p2d);
+
+
+    source = _cairo_surface_get_source (source, NULL);
+    surface_is_unbounded = (pattern->extend == CAIRO_EXTEND_REPEAT
+				     || pattern->extend == CAIRO_EXTEND_REFLECT);
+    status = _cairo_recording_surface_replay_and_create_regions (source,
+								 &pattern->matrix,
+								 &tmp->base,
+								 surface_is_unbounded);
+    if (unlikely (status))
+	goto cleanup2;
+
+    /* black background or mime data fills entire extents */
+    if (!(source->content & CAIRO_CONTENT_ALPHA) || _cairo_surface_has_mime_image (source)) {
+	cairo_rectangle_int_t rect;
+
+	if (_cairo_surface_get_extents (source, &rect)) {
+	    cairo_box_t bbox;
+
+	    _cairo_box_from_rectangle (&bbox, &rect);
+	    _cairo_matrix_transform_bounding_box_fixed (&p2d, &bbox, NULL);
+	    _cairo_box_round_to_rectangle (&bbox, &rect);
+	    status = _add_operation (tmp, &rect, CAIRO_INT_STATUS_SUCCESS);
+	    if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
+		status = CAIRO_INT_STATUS_SUCCESS;
+	    if (unlikely (status))
+		goto cleanup2;
+	}
+    }
+
+    if (tmp->has_supported) {
+	surface->has_supported = TRUE;
+	unused = cairo_region_union (&surface->supported_region, &tmp->supported_region);
+    }
+
+    if (tmp->has_unsupported) {
+	surface->has_unsupported = TRUE;
+	unused = cairo_region_union (&surface->fallback_region, &tmp->fallback_region);
+    }
+
+    analysis_status = tmp->has_unsupported ? CAIRO_INT_STATUS_IMAGE_FALLBACK : CAIRO_INT_STATUS_SUCCESS;
+    if (pattern->extend != CAIRO_EXTEND_NONE) {
+	_cairo_unbounded_rectangle_init (extents);
+    } else {
+	status = cairo_matrix_invert (&tmp->ctm);
+	_cairo_matrix_transform_bounding_box_fixed (&tmp->ctm,
+						    &tmp->page_bbox, NULL);
+	_cairo_box_round_to_rectangle (&tmp->page_bbox, extents);
+    }
+
+  cleanup2:
+    detach_proxy (proxy);
+  cleanup1:
+    cairo_surface_destroy (&tmp->base);
+
+    if (unlikely (status))
+	return status;
+    else
+	return analysis_status;
+}
+
+static cairo_status_t
+_cairo_analysis_surface_finish (void *abstract_surface)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    _cairo_region_fini (&surface->supported_region);
+    _cairo_region_fini (&surface->fallback_region);
+
+    cairo_surface_destroy (surface->target);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_analysis_surface_get_extents (void			*abstract_surface,
+				     cairo_rectangle_int_t	*rectangle)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_get_extents (surface->target, rectangle);
+}
+
+static void
+_rectangle_intersect_clip (cairo_rectangle_int_t *extents, const cairo_clip_t *clip)
+{
+    if (clip != NULL)
+	_cairo_rectangle_intersect (extents, _cairo_clip_get_extents (clip));
+}
+
+static void
+_cairo_analysis_surface_operation_extents (cairo_analysis_surface_t *surface,
+					   cairo_operator_t op,
+					   const cairo_pattern_t *source,
+					   const cairo_clip_t *clip,
+					   cairo_rectangle_int_t *extents)
+{
+    cairo_bool_t is_empty;
+
+    is_empty = _cairo_surface_get_extents (&surface->base, extents);
+
+    if (_cairo_operator_bounded_by_source (op)) {
+	cairo_rectangle_int_t source_extents;
+
+	_cairo_pattern_get_extents (source, &source_extents, surface->target->is_vector);
+	_cairo_rectangle_intersect (extents, &source_extents);
+    }
+
+    _rectangle_intersect_clip (extents, clip);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_paint (void			*abstract_surface,
+			       cairo_operator_t		op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	     backend_status;
+    cairo_rectangle_int_t  extents;
+
+    if (surface->target->backend->paint == NULL) {
+	backend_status = CAIRO_INT_STATUS_UNSUPPORTED;
+    } else {
+	backend_status =
+	    surface->target->backend->paint (surface->target,
+					     op, source, clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+
+    _cairo_analysis_surface_operation_extents (surface,
+					       op, source, clip,
+					       &extents);
+    if (backend_status == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN) {
+	cairo_rectangle_int_t rec_extents;
+	backend_status = _analyze_recording_surface_pattern (surface, source, &rec_extents);
+	_cairo_rectangle_intersect (&extents, &rec_extents);
+    }
+
+    return _add_operation (surface, &extents, backend_status);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_mask (void			*abstract_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	      backend_status;
+    cairo_rectangle_int_t   extents;
+
+    if (surface->target->backend->mask == NULL) {
+	backend_status = CAIRO_INT_STATUS_UNSUPPORTED;
+    } else {
+	backend_status =
+	    surface->target->backend->mask (surface->target,
+					    op, source, mask, clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+
+    _cairo_analysis_surface_operation_extents (surface,
+					       op, source, clip,
+					       &extents);
+    if (backend_status == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN) {
+	cairo_int_status_t backend_source_status = CAIRO_STATUS_SUCCESS;
+	cairo_int_status_t backend_mask_status = CAIRO_STATUS_SUCCESS;
+	cairo_rectangle_int_t rec_extents;
+
+	if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    cairo_surface_t *src_surface = ((cairo_surface_pattern_t *)source)->surface;
+	    src_surface = _cairo_surface_get_source (src_surface, NULL);
+	    if (_cairo_surface_is_recording (src_surface)) {
+		backend_source_status =
+		    _analyze_recording_surface_pattern (surface, source, &rec_extents);
+		if (_cairo_int_status_is_error (backend_source_status))
+		    return backend_source_status;
+
+		_cairo_rectangle_intersect (&extents, &rec_extents);
+	    }
+	}
+
+	if (mask->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    cairo_surface_t *mask_surface = ((cairo_surface_pattern_t *)mask)->surface;
+	    mask_surface = _cairo_surface_get_source (mask_surface, NULL);
+	    if (_cairo_surface_is_recording (mask_surface)) {
+		backend_mask_status =
+		    _analyze_recording_surface_pattern (surface, mask, &rec_extents);
+		if (_cairo_int_status_is_error (backend_mask_status))
+		    return backend_mask_status;
+
+		_cairo_rectangle_intersect (&extents, &rec_extents);
+	    }
+	}
+
+	backend_status =
+	    _cairo_analysis_surface_merge_status (backend_source_status,
+						  backend_mask_status);
+    }
+
+    if (_cairo_operator_bounded_by_mask (op)) {
+	cairo_rectangle_int_t mask_extents;
+
+	_cairo_pattern_get_extents (mask, &mask_extents, surface->target->is_vector);
+	_cairo_rectangle_intersect (&extents, &mask_extents);
+    }
+
+    return _add_operation (surface, &extents, backend_status);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_stroke (void			   *abstract_surface,
+				cairo_operator_t	    op,
+				const cairo_pattern_t	   *source,
+				const cairo_path_fixed_t   *path,
+				const cairo_stroke_style_t *style,
+				const cairo_matrix_t	   *ctm,
+				const cairo_matrix_t	   *ctm_inverse,
+				double			    tolerance,
+				cairo_antialias_t	    antialias,
+				const cairo_clip_t	   *clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	     backend_status;
+    cairo_rectangle_int_t    extents;
+
+    if (surface->target->backend->stroke == NULL) {
+	backend_status = CAIRO_INT_STATUS_UNSUPPORTED;
+    } else {
+	backend_status =
+	    surface->target->backend->stroke (surface->target, op,
+					      source, path, style,
+					      ctm, ctm_inverse,
+					      tolerance, antialias,
+					      clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+
+    _cairo_analysis_surface_operation_extents (surface,
+					       op, source, clip,
+					       &extents);
+    if (backend_status == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN) {
+	cairo_rectangle_int_t rec_extents;
+	backend_status = _analyze_recording_surface_pattern (surface, source, &rec_extents);
+	_cairo_rectangle_intersect (&extents, &rec_extents);
+    }
+
+    if (_cairo_operator_bounded_by_mask (op)) {
+	cairo_rectangle_int_t mask_extents;
+	cairo_int_status_t status;
+
+	status = _cairo_path_fixed_stroke_extents (path, style,
+						   ctm, ctm_inverse,
+						   tolerance,
+						   &mask_extents);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_rectangle_intersect (&extents, &mask_extents);
+    }
+
+    return _add_operation (surface, &extents, backend_status);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_fill (void			*abstract_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		 fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias,
+			      const cairo_clip_t	*clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	     backend_status;
+    cairo_rectangle_int_t    extents;
+
+    if (surface->target->backend->fill == NULL) {
+	backend_status = CAIRO_INT_STATUS_UNSUPPORTED;
+    } else {
+	backend_status =
+	    surface->target->backend->fill (surface->target, op,
+					    source, path, fill_rule,
+					    tolerance, antialias,
+					    clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+
+    _cairo_analysis_surface_operation_extents (surface,
+					       op, source, clip,
+					       &extents);
+    if (backend_status == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN) {
+	cairo_rectangle_int_t rec_extents;
+	backend_status = _analyze_recording_surface_pattern (surface, source, &rec_extents);
+	_cairo_rectangle_intersect (&extents, &rec_extents);
+    }
+
+    if (_cairo_operator_bounded_by_mask (op)) {
+	cairo_rectangle_int_t mask_extents;
+
+	_cairo_path_fixed_fill_extents (path, fill_rule, tolerance,
+					&mask_extents);
+
+	_cairo_rectangle_intersect (&extents, &mask_extents);
+    }
+
+    return _add_operation (surface, &extents, backend_status);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_show_glyphs (void		  *abstract_surface,
+				     cairo_operator_t	   op,
+				     const cairo_pattern_t *source,
+				     cairo_glyph_t	  *glyphs,
+				     int		   num_glyphs,
+				     cairo_scaled_font_t  *scaled_font,
+				     const cairo_clip_t         *clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	     status, backend_status;
+    cairo_rectangle_int_t    extents, glyph_extents;
+
+    /* Adapted from _cairo_surface_show_glyphs */
+    if (surface->target->backend->show_glyphs != NULL) {
+	backend_status =
+	    surface->target->backend->show_glyphs (surface->target, op,
+						   source,
+						   glyphs, num_glyphs,
+						   scaled_font,
+						   clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+    else if (surface->target->backend->show_text_glyphs != NULL)
+    {
+	backend_status =
+	    surface->target->backend->show_text_glyphs (surface->target, op,
+							source,
+							NULL, 0,
+							glyphs, num_glyphs,
+							NULL, 0,
+							FALSE,
+							scaled_font,
+							clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+    else
+    {
+	backend_status = CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    _cairo_analysis_surface_operation_extents (surface,
+					       op, source, clip,
+					       &extents);
+    if (backend_status == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN) {
+	cairo_rectangle_int_t rec_extents;
+	backend_status = _analyze_recording_surface_pattern (surface, source, &rec_extents);
+	_cairo_rectangle_intersect (&extents, &rec_extents);
+    }
+
+    if (_cairo_operator_bounded_by_mask (op)) {
+	status = _cairo_scaled_font_glyph_device_extents (scaled_font,
+							  glyphs,
+							  num_glyphs,
+							  &glyph_extents,
+							  NULL);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_rectangle_intersect (&extents, &glyph_extents);
+    }
+
+    return _add_operation (surface, &extents, backend_status);
+}
+
+static cairo_bool_t
+_cairo_analysis_surface_has_show_text_glyphs (void *abstract_surface)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+
+    return cairo_surface_has_show_text_glyphs (surface->target);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_show_text_glyphs (void			    *abstract_surface,
+					  cairo_operator_t	     op,
+					  const cairo_pattern_t	    *source,
+					  const char		    *utf8,
+					  int			     utf8_len,
+					  cairo_glyph_t		    *glyphs,
+					  int			     num_glyphs,
+					  const cairo_text_cluster_t *clusters,
+					  int			     num_clusters,
+					  cairo_text_cluster_flags_t cluster_flags,
+					  cairo_scaled_font_t	    *scaled_font,
+					  const cairo_clip_t		    *clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	     status, backend_status;
+    cairo_rectangle_int_t    extents, glyph_extents;
+
+    /* Adapted from _cairo_surface_show_glyphs */
+    backend_status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (surface->target->backend->show_text_glyphs != NULL) {
+	backend_status =
+	    surface->target->backend->show_text_glyphs (surface->target, op,
+							source,
+							utf8, utf8_len,
+							glyphs, num_glyphs,
+							clusters, num_clusters,
+							cluster_flags,
+							scaled_font,
+							clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+    if (backend_status == CAIRO_INT_STATUS_UNSUPPORTED &&
+	surface->target->backend->show_glyphs != NULL)
+    {
+	backend_status =
+	    surface->target->backend->show_glyphs (surface->target, op,
+						   source,
+						   glyphs, num_glyphs,
+						   scaled_font,
+						   clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+
+    _cairo_analysis_surface_operation_extents (surface,
+					       op, source, clip,
+					       &extents);
+    if (backend_status == CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN) {
+	cairo_rectangle_int_t rec_extents;
+	backend_status = _analyze_recording_surface_pattern (surface, source, &rec_extents);
+	_cairo_rectangle_intersect (&extents, &rec_extents);
+    }
+
+    if (_cairo_operator_bounded_by_mask (op)) {
+	status = _cairo_scaled_font_glyph_device_extents (scaled_font,
+							  glyphs,
+							  num_glyphs,
+							  &glyph_extents,
+							  NULL);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_rectangle_intersect (&extents, &glyph_extents);
+    }
+
+    return _add_operation (surface, &extents, backend_status);
+}
+
+static cairo_int_status_t
+_cairo_analysis_surface_tag (void	                *abstract_surface,
+			     cairo_bool_t                begin,
+			     const char                 *tag_name,
+			     const char                 *attributes,
+			     const cairo_pattern_t	*source,
+			     const cairo_stroke_style_t	*stroke_style,
+			     const cairo_matrix_t	*ctm,
+			     const cairo_matrix_t	*ctm_inverse,
+			     const cairo_clip_t	        *clip)
+{
+    cairo_analysis_surface_t *surface = abstract_surface;
+    cairo_int_status_t	     backend_status;
+
+    backend_status = CAIRO_INT_STATUS_SUCCESS;
+    if (surface->target->backend->tag != NULL) {
+	backend_status =
+	    surface->target->backend->tag (surface->target,
+					   begin,
+					   tag_name,
+					   attributes,
+					   source,
+					   stroke_style,
+					   ctm,
+					   ctm_inverse,
+					   clip);
+	if (_cairo_int_status_is_error (backend_status))
+	    return backend_status;
+    }
+
+    return backend_status;
+}
+
+static const cairo_surface_backend_t cairo_analysis_surface_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_ANALYSIS,
+
+    _cairo_analysis_surface_finish,
+    NULL,
+
+    NULL, /* create_similar */
+    NULL, /* create_similar_image */
+    NULL, /* map_to_image */
+    NULL, /* unmap */
+
+    NULL, /* source */
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_analysis_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_analysis_surface_paint,
+    _cairo_analysis_surface_mask,
+    _cairo_analysis_surface_stroke,
+    _cairo_analysis_surface_fill,
+    NULL, /* fill_stroke */
+    _cairo_analysis_surface_show_glyphs,
+    _cairo_analysis_surface_has_show_text_glyphs,
+    _cairo_analysis_surface_show_text_glyphs,
+    NULL, /* get_supported_mime_types */
+    _cairo_analysis_surface_tag
+};
+
+cairo_surface_t *
+_cairo_analysis_surface_create (cairo_surface_t		*target)
+{
+    cairo_analysis_surface_t *surface;
+    cairo_status_t status;
+
+    status = target->status;
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    surface = _cairo_malloc (sizeof (cairo_analysis_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    /* I believe the content type here is truly arbitrary. I'm quite
+     * sure nothing will ever use this value. */
+    _cairo_surface_init (&surface->base,
+			 &cairo_analysis_surface_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 target->is_vector);
+
+    cairo_matrix_init_identity (&surface->ctm);
+    surface->has_ctm = FALSE;
+
+    surface->target = cairo_surface_reference (target);
+    surface->first_op  = TRUE;
+    surface->has_supported = FALSE;
+    surface->has_unsupported = FALSE;
+
+    _cairo_region_init (&surface->supported_region);
+    _cairo_region_init (&surface->fallback_region);
+
+    surface->page_bbox.p1.x = 0;
+    surface->page_bbox.p1.y = 0;
+    surface->page_bbox.p2.x = 0;
+    surface->page_bbox.p2.y = 0;
+
+    return &surface->base;
+}
+
+void
+_cairo_analysis_surface_set_ctm (cairo_surface_t *abstract_surface,
+				 const cairo_matrix_t  *ctm)
+{
+    cairo_analysis_surface_t	*surface;
+
+    if (abstract_surface->status)
+	return;
+
+    surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    surface->ctm = *ctm;
+    surface->has_ctm = ! _cairo_matrix_is_identity (&surface->ctm);
+}
+
+void
+_cairo_analysis_surface_get_ctm (cairo_surface_t *abstract_surface,
+				 cairo_matrix_t  *ctm)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    *ctm = surface->ctm;
+}
+
+
+cairo_region_t *
+_cairo_analysis_surface_get_supported (cairo_surface_t *abstract_surface)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    return &surface->supported_region;
+}
+
+cairo_region_t *
+_cairo_analysis_surface_get_unsupported (cairo_surface_t *abstract_surface)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    return &surface->fallback_region;
+}
+
+cairo_bool_t
+_cairo_analysis_surface_has_supported (cairo_surface_t *abstract_surface)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    return surface->has_supported;
+}
+
+cairo_bool_t
+_cairo_analysis_surface_has_unsupported (cairo_surface_t *abstract_surface)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    return surface->has_unsupported;
+}
+
+void
+_cairo_analysis_surface_get_bounding_box (cairo_surface_t *abstract_surface,
+					  cairo_box_t     *bbox)
+{
+    cairo_analysis_surface_t	*surface = (cairo_analysis_surface_t *) abstract_surface;
+
+    *bbox = surface->page_bbox;
+}
+
+/* null surface type: a surface that does nothing (has no side effects, yay!) */
+
+static cairo_int_status_t
+_return_success (void)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* These typedefs are just to silence the compiler... */
+typedef cairo_int_status_t
+(*_paint_func)			(void			*surface,
+			         cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_clip_t		*clip);
+
+typedef cairo_int_status_t
+(*_mask_func)			(void			*surface,
+			         cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_pattern_t	*mask,
+				 const cairo_clip_t		*clip);
+
+typedef cairo_int_status_t
+(*_stroke_func)			(void			*surface,
+			         cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 const cairo_stroke_style_t	*style,
+				 const cairo_matrix_t		*ctm,
+				 const cairo_matrix_t		*ctm_inverse,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t		*clip);
+
+typedef cairo_int_status_t
+(*_fill_func)			(void			*surface,
+			         cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 cairo_fill_rule_t	 fill_rule,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t		*clip);
+
+typedef cairo_int_status_t
+(*_show_glyphs_func)		(void			*surface,
+			         cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 cairo_glyph_t		*glyphs,
+				 int			 num_glyphs,
+				 cairo_scaled_font_t	*scaled_font,
+				 const cairo_clip_t		*clip);
+
+static const cairo_surface_backend_t cairo_null_surface_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_NULL,
+    NULL, /* finish */
+
+    NULL, /* only accessed through the surface functions */
+
+    NULL, /* create_similar */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image*/
+
+    NULL, /* source */
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    NULL, /* get_extents */
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    (_paint_func) _return_success,	    /* paint */
+    (_mask_func) _return_success,	    /* mask */
+    (_stroke_func) _return_success,	    /* stroke */
+    (_fill_func) _return_success,	    /* fill */
+    NULL, /* fill_stroke */
+    (_show_glyphs_func) _return_success,    /* show_glyphs */
+    NULL, /* has_show_text_glyphs */
+    NULL  /* show_text_glyphs */
+};
+
+cairo_surface_t *
+_cairo_null_surface_create (cairo_content_t content)
+{
+    cairo_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_surface_t));
+    if (unlikely (surface == NULL)) {
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    _cairo_surface_init (surface,
+			 &cairo_null_surface_backend,
+			 NULL, /* device */
+			 content,
+			 TRUE); /* is_vector */
+
+    return surface;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-arc-private.h b/libs/cairo-1.16.0/src/cairo-arc-private.h
new file mode 100644
index 0000000..a22c01a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-arc-private.h
@@ -0,0 +1,61 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_ARC_PRIVATE_H
+#define CAIRO_ARC_PRIVATE_H
+
+#include "cairoint.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private void
+_cairo_arc_path (cairo_t *cr,
+		 double	  xc,
+		 double	  yc,
+		 double	  radius,
+		 double	  angle1,
+		 double	  angle2);
+
+cairo_private void
+_cairo_arc_path_negative (cairo_t *cr,
+			  double   xc,
+			  double   yc,
+			  double   radius,
+			  double   angle1,
+			  double   angle2);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_ARC_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-arc.c b/libs/cairo-1.16.0/src/cairo-arc.c
new file mode 100644
index 0000000..390397b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-arc.c
@@ -0,0 +1,312 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-arc-private.h"
+
+#define MAX_FULL_CIRCLES 65536
+
+/* Spline deviation from the circle in radius would be given by:
+
+	error = sqrt (x**2 + y**2) - 1
+
+   A simpler error function to work with is:
+
+	e = x**2 + y**2 - 1
+
+   From "Good approximation of circles by curvature-continuous Bezier
+   curves", Tor Dokken and Morten Daehlen, Computer Aided Geometric
+   Design 8 (1990) 22-41, we learn:
+
+	abs (max(e)) = 4/27 * sin**6(angle/4) / cos**2(angle/4)
+
+   and
+	abs (error) =~ 1/2 * e
+
+   Of course, this error value applies only for the particular spline
+   approximation that is used in _cairo_gstate_arc_segment.
+*/
+static double
+_arc_error_normalized (double angle)
+{
+    return 2.0/27.0 * pow (sin (angle / 4), 6) / pow (cos (angle / 4), 2);
+}
+
+static double
+_arc_max_angle_for_tolerance_normalized (double tolerance)
+{
+    double angle, error;
+    int i;
+
+    /* Use table lookup to reduce search time in most cases. */
+    struct {
+	double angle;
+	double error;
+    } table[] = {
+	{ M_PI / 1.0,   0.0185185185185185036127 },
+	{ M_PI / 2.0,   0.000272567143730179811158 },
+	{ M_PI / 3.0,   2.38647043651461047433e-05 },
+	{ M_PI / 4.0,   4.2455377443222443279e-06 },
+	{ M_PI / 5.0,   1.11281001494389081528e-06 },
+	{ M_PI / 6.0,   3.72662000942734705475e-07 },
+	{ M_PI / 7.0,   1.47783685574284411325e-07 },
+	{ M_PI / 8.0,   6.63240432022601149057e-08 },
+	{ M_PI / 9.0,   3.2715520137536980553e-08 },
+	{ M_PI / 10.0,  1.73863223499021216974e-08 },
+	{ M_PI / 11.0,  9.81410988043554039085e-09 },
+    };
+    int table_size = ARRAY_LENGTH (table);
+
+    for (i = 0; i < table_size; i++)
+	if (table[i].error < tolerance)
+	    return table[i].angle;
+
+    ++i;
+    do {
+	angle = M_PI / i++;
+	error = _arc_error_normalized (angle);
+    } while (error > tolerance);
+
+    return angle;
+}
+
+static int
+_arc_segments_needed (double	      angle,
+		      double	      radius,
+		      cairo_matrix_t *ctm,
+		      double	      tolerance)
+{
+    double major_axis, max_angle;
+
+    /* the error is amplified by at most the length of the
+     * major axis of the circle; see cairo-pen.c for a more detailed analysis
+     * of this. */
+    major_axis = _cairo_matrix_transformed_circle_major_axis (ctm, radius);
+    max_angle = _arc_max_angle_for_tolerance_normalized (tolerance / major_axis);
+
+    return ceil (fabs (angle) / max_angle);
+}
+
+/* We want to draw a single spline approximating a circular arc radius
+   R from angle A to angle B. Since we want a symmetric spline that
+   matches the endpoints of the arc in position and slope, we know
+   that the spline control points must be:
+
+	(R * cos(A), R * sin(A))
+	(R * cos(A) - h * sin(A), R * sin(A) + h * cos (A))
+	(R * cos(B) + h * sin(B), R * sin(B) - h * cos (B))
+	(R * cos(B), R * sin(B))
+
+   for some value of h.
+
+   "Approximation of circular arcs by cubic polynomials", Michael
+   Goldapp, Computer Aided Geometric Design 8 (1991) 227-238, provides
+   various values of h along with error analysis for each.
+
+   From that paper, a very practical value of h is:
+
+	h = 4/3 * R * tan(angle/4)
+
+   This value does not give the spline with minimal error, but it does
+   provide a very good approximation, (6th-order convergence), and the
+   error expression is quite simple, (see the comment for
+   _arc_error_normalized).
+*/
+static void
+_cairo_arc_segment (cairo_t *cr,
+		    double   xc,
+		    double   yc,
+		    double   radius,
+		    double   angle_A,
+		    double   angle_B)
+{
+    double r_sin_A, r_cos_A;
+    double r_sin_B, r_cos_B;
+    double h;
+
+    r_sin_A = radius * sin (angle_A);
+    r_cos_A = radius * cos (angle_A);
+    r_sin_B = radius * sin (angle_B);
+    r_cos_B = radius * cos (angle_B);
+
+    h = 4.0/3.0 * tan ((angle_B - angle_A) / 4.0);
+
+    cairo_curve_to (cr,
+		    xc + r_cos_A - h * r_sin_A,
+		    yc + r_sin_A + h * r_cos_A,
+		    xc + r_cos_B + h * r_sin_B,
+		    yc + r_sin_B - h * r_cos_B,
+		    xc + r_cos_B,
+		    yc + r_sin_B);
+}
+
+static void
+_cairo_arc_in_direction (cairo_t	  *cr,
+			 double		   xc,
+			 double		   yc,
+			 double		   radius,
+			 double		   angle_min,
+			 double		   angle_max,
+			 cairo_direction_t dir)
+{
+    if (cairo_status (cr))
+        return;
+
+    assert (angle_max >= angle_min);
+
+    if (angle_max - angle_min > 2 * M_PI * MAX_FULL_CIRCLES) {
+	angle_max = fmod (angle_max - angle_min, 2 * M_PI);
+	angle_min = fmod (angle_min, 2 * M_PI);
+	angle_max += angle_min + 2 * M_PI * MAX_FULL_CIRCLES;
+    }
+
+    /* Recurse if drawing arc larger than pi */
+    if (angle_max - angle_min > M_PI) {
+	double angle_mid = angle_min + (angle_max - angle_min) / 2.0;
+	if (dir == CAIRO_DIRECTION_FORWARD) {
+	    _cairo_arc_in_direction (cr, xc, yc, radius,
+				     angle_min, angle_mid,
+				     dir);
+
+	    _cairo_arc_in_direction (cr, xc, yc, radius,
+				     angle_mid, angle_max,
+				     dir);
+	} else {
+	    _cairo_arc_in_direction (cr, xc, yc, radius,
+				     angle_mid, angle_max,
+				     dir);
+
+	    _cairo_arc_in_direction (cr, xc, yc, radius,
+				     angle_min, angle_mid,
+				     dir);
+	}
+    } else if (angle_max != angle_min) {
+	cairo_matrix_t ctm;
+	int i, segments;
+	double step;
+
+	cairo_get_matrix (cr, &ctm);
+	segments = _arc_segments_needed (angle_max - angle_min,
+					 radius, &ctm,
+					 cairo_get_tolerance (cr));
+	step = (angle_max - angle_min) / segments;
+	segments -= 1;
+
+	if (dir == CAIRO_DIRECTION_REVERSE) {
+	    double t;
+
+	    t = angle_min;
+	    angle_min = angle_max;
+	    angle_max = t;
+
+	    step = -step;
+	}
+
+	cairo_line_to (cr,
+		       xc + radius * cos (angle_min),
+		       yc + radius * sin (angle_min));
+
+	for (i = 0; i < segments; i++, angle_min += step) {
+	    _cairo_arc_segment (cr, xc, yc, radius,
+				angle_min, angle_min + step);
+	}
+
+	_cairo_arc_segment (cr, xc, yc, radius,
+			    angle_min, angle_max);
+    } else {
+	cairo_line_to (cr,
+		       xc + radius * cos (angle_min),
+		       yc + radius * sin (angle_min));
+    }
+}
+
+/**
+ * _cairo_arc_path:
+ * @cr: a cairo context
+ * @xc: X position of the center of the arc
+ * @yc: Y position of the center of the arc
+ * @radius: the radius of the arc
+ * @angle1: the start angle, in radians
+ * @angle2: the end angle, in radians
+ *
+ * Compute a path for the given arc and append it onto the current
+ * path within @cr. The arc will be accurate within the current
+ * tolerance and given the current transformation.
+ **/
+void
+_cairo_arc_path (cairo_t *cr,
+		 double	  xc,
+		 double	  yc,
+		 double	  radius,
+		 double	  angle1,
+		 double	  angle2)
+{
+    _cairo_arc_in_direction (cr, xc, yc,
+			     radius,
+			     angle1, angle2,
+			     CAIRO_DIRECTION_FORWARD);
+}
+
+/**
+ * _cairo_arc_path_negative:
+ * @xc: X position of the center of the arc
+ * @yc: Y position of the center of the arc
+ * @radius: the radius of the arc
+ * @angle1: the start angle, in radians
+ * @angle2: the end angle, in radians
+ * @ctm: the current transformation matrix
+ * @tolerance: the current tolerance value
+ * @path: the path onto which the arc will be appended
+ *
+ * Compute a path for the given arc (defined in the negative
+ * direction) and append it onto the current path within @cr. The arc
+ * will be accurate within the current tolerance and given the current
+ * transformation.
+ **/
+void
+_cairo_arc_path_negative (cairo_t *cr,
+			  double   xc,
+			  double   yc,
+			  double   radius,
+			  double   angle1,
+			  double   angle2)
+{
+    _cairo_arc_in_direction (cr, xc, yc,
+			     radius,
+			     angle2, angle1,
+			     CAIRO_DIRECTION_REVERSE);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-array-private.h b/libs/cairo-1.16.0/src/cairo-array-private.h
new file mode 100644
index 0000000..35b29e5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-array-private.h
@@ -0,0 +1,90 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_ARRAY_PRIVATE_H
+#define CAIRO_ARRAY_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+
+CAIRO_BEGIN_DECLS
+
+/* cairo-array.c structures and functions */
+
+cairo_private void
+_cairo_array_init (cairo_array_t *array, unsigned int element_size);
+
+cairo_private void
+_cairo_array_fini (cairo_array_t *array);
+
+cairo_private cairo_status_t
+_cairo_array_grow_by (cairo_array_t *array, unsigned int additional);
+
+cairo_private void
+_cairo_array_truncate (cairo_array_t *array, unsigned int num_elements);
+
+cairo_private cairo_status_t
+_cairo_array_append (cairo_array_t *array, const void *element);
+
+cairo_private cairo_status_t
+_cairo_array_append_multiple (cairo_array_t	*array,
+			      const void	*elements,
+			      unsigned int	 num_elements);
+
+cairo_private cairo_status_t
+_cairo_array_allocate (cairo_array_t	 *array,
+		       unsigned int	  num_elements,
+		       void		**elements);
+
+cairo_private void *
+_cairo_array_index (cairo_array_t *array, unsigned int index);
+
+cairo_private const void *
+_cairo_array_index_const (const cairo_array_t *array, unsigned int index);
+
+cairo_private void
+_cairo_array_copy_element (const cairo_array_t *array, unsigned int index, void *dst);
+
+cairo_private unsigned int
+_cairo_array_num_elements (const cairo_array_t *array);
+
+cairo_private unsigned int
+_cairo_array_size (const cairo_array_t *array);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_ARRAY_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-array.c b/libs/cairo-1.16.0/src/cairo-array.c
new file mode 100644
index 0000000..58c9a38
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-array.c
@@ -0,0 +1,529 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+
+/**
+ * _cairo_array_init:
+ *
+ * Initialize a new #cairo_array_t object to store objects each of size
+ * @element_size.
+ *
+ * The #cairo_array_t object provides grow-by-doubling storage. It
+ * never interprets the data passed to it, nor does it provide any
+ * sort of callback mechanism for freeing resources held onto by
+ * stored objects.
+ *
+ * When finished using the array, _cairo_array_fini() should be
+ * called to free resources allocated during use of the array.
+ **/
+void
+_cairo_array_init (cairo_array_t *array, unsigned int element_size)
+{
+    array->size = 0;
+    array->num_elements = 0;
+    array->element_size = element_size;
+    array->elements = NULL;
+}
+
+/**
+ * _cairo_array_fini:
+ * @array: A #cairo_array_t
+ *
+ * Free all resources associated with @array. After this call, @array
+ * should not be used again without a subsequent call to
+ * _cairo_array_init() again first.
+ **/
+void
+_cairo_array_fini (cairo_array_t *array)
+{
+    free (array->elements);
+}
+
+/**
+ * _cairo_array_grow_by:
+ * @array: a #cairo_array_t
+ *
+ * Increase the size of @array (if needed) so that there are at least
+ * @additional free spaces in the array. The actual size of the array
+ * is always increased by doubling as many times as necessary.
+ **/
+cairo_status_t
+_cairo_array_grow_by (cairo_array_t *array, unsigned int additional)
+{
+    char *new_elements;
+    unsigned int old_size = array->size;
+    unsigned int required_size = array->num_elements + additional;
+    unsigned int new_size;
+
+    /* check for integer overflow */
+    if (required_size > INT_MAX || required_size < array->num_elements)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (required_size <= old_size)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (old_size == 0)
+	new_size = 1;
+    else
+	new_size = old_size * 2;
+
+    while (new_size < required_size)
+	new_size = new_size * 2;
+
+    array->size = new_size;
+    new_elements = _cairo_realloc_ab (array->elements,
+			              array->size, array->element_size);
+
+    if (unlikely (new_elements == NULL)) {
+	array->size = old_size;
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    array->elements = new_elements;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_array_truncate:
+ * @array: a #cairo_array_t
+ *
+ * Truncate size of the array to @num_elements if less than the
+ * current size. No memory is actually freed. The stored objects
+ * beyond @num_elements are simply "forgotten".
+ **/
+void
+_cairo_array_truncate (cairo_array_t *array, unsigned int num_elements)
+{
+    if (num_elements < array->num_elements)
+	array->num_elements = num_elements;
+}
+
+/**
+ * _cairo_array_index:
+ * @array: a #cairo_array_t
+ * Returns: A pointer to the object stored at @index.
+ *
+ * If the resulting value is assigned to a pointer to an object of the same
+ * element_size as initially passed to _cairo_array_init() then that
+ * pointer may be used for further direct indexing with []. For
+ * example:
+ *
+ * <informalexample><programlisting>
+ *	cairo_array_t array;
+ *	double *values;
+ *
+ *	_cairo_array_init (&array, sizeof(double));
+ *	... calls to _cairo_array_append() here ...
+ *
+ *	values = _cairo_array_index (&array, 0);
+ *      for (i = 0; i < _cairo_array_num_elements (&array); i++)
+ *	    ... use values[i] here ...
+ * </programlisting></informalexample>
+ **/
+void *
+_cairo_array_index (cairo_array_t *array, unsigned int index)
+{
+    /* We allow an index of 0 for the no-elements case.
+     * This makes for cleaner calling code which will often look like:
+     *
+     *    elements = _cairo_array_index (array, 0);
+     *	  for (i=0; i < num_elements; i++) {
+     *        ... use elements[i] here ...
+     *    }
+     *
+     * which in the num_elements==0 case gets the NULL pointer here,
+     * but never dereferences it.
+     */
+    if (index == 0 && array->num_elements == 0)
+	return NULL;
+
+    assert (index < array->num_elements);
+
+    return array->elements + index * array->element_size;
+}
+
+/**
+ * _cairo_array_index_const:
+ * @array: a #cairo_array_t
+ * Returns: A pointer to the object stored at @index.
+ *
+ * If the resulting value is assigned to a pointer to an object of the same
+ * element_size as initially passed to _cairo_array_init() then that
+ * pointer may be used for further direct indexing with []. For
+ * example:
+ *
+ * <informalexample><programlisting>
+ *	cairo_array_t array;
+ *	const double *values;
+ *
+ *	_cairo_array_init (&array, sizeof(double));
+ *	... calls to _cairo_array_append() here ...
+ *
+ *	values = _cairo_array_index_const (&array, 0);
+ *      for (i = 0; i < _cairo_array_num_elements (&array); i++)
+ *	    ... read values[i] here ...
+ * </programlisting></informalexample>
+ **/
+const void *
+_cairo_array_index_const (const cairo_array_t *array, unsigned int index)
+{
+    /* We allow an index of 0 for the no-elements case.
+     * This makes for cleaner calling code which will often look like:
+     *
+     *    elements = _cairo_array_index_const (array, 0);
+     *	  for (i=0; i < num_elements; i++) {
+     *        ... read elements[i] here ...
+     *    }
+     *
+     * which in the num_elements==0 case gets the NULL pointer here,
+     * but never dereferences it.
+     */
+    if (index == 0 && array->num_elements == 0)
+	return NULL;
+
+    assert (index < array->num_elements);
+
+    return array->elements + index * array->element_size;
+}
+
+/**
+ * _cairo_array_copy_element:
+ * @array: a #cairo_array_t
+ *
+ * Copy a single element out of the array from index @index into the
+ * location pointed to by @dst.
+ **/
+void
+_cairo_array_copy_element (const cairo_array_t *array,
+			   unsigned int         index,
+			   void                *dst)
+{
+    memcpy (dst, _cairo_array_index_const (array, index), array->element_size);
+}
+
+/**
+ * _cairo_array_append:
+ * @array: a #cairo_array_t
+ *
+ * Append a single item onto the array by growing the array by at
+ * least one element, then copying element_size bytes from @element
+ * into the array. The address of the resulting object within the
+ * array can be determined with:
+ *
+ * _cairo_array_index (array, _cairo_array_num_elements (array) - 1);
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if insufficient memory is available for the
+ * operation.
+ **/
+cairo_status_t
+_cairo_array_append (cairo_array_t	*array,
+		     const void		*element)
+{
+    return _cairo_array_append_multiple (array, element, 1);
+}
+
+/**
+ * _cairo_array_append_multiple:
+ * @array: a #cairo_array_t
+ *
+ * Append one or more items onto the array by growing the array by
+ * @num_elements, then copying @num_elements * element_size bytes from
+ * @elements into the array.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if insufficient memory is available for the
+ * operation.
+ **/
+cairo_status_t
+_cairo_array_append_multiple (cairo_array_t	*array,
+			      const void	*elements,
+			      unsigned int	 num_elements)
+{
+    cairo_status_t status;
+    void *dest;
+
+    status = _cairo_array_allocate (array, num_elements, &dest);
+    if (unlikely (status))
+	return status;
+
+    memcpy (dest, elements, num_elements * array->element_size);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_array_allocate:
+ * @array: a #cairo_array_t
+ *
+ * Allocate space at the end of the array for @num_elements additional
+ * elements, providing the address of the new memory chunk in
+ * @elements. This memory will be unitialized, but will be accounted
+ * for in the return value of _cairo_array_num_elements().
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if insufficient memory is available for the
+ * operation.
+ **/
+cairo_status_t
+_cairo_array_allocate (cairo_array_t	 *array,
+		       unsigned int	  num_elements,
+		       void		**elements)
+{
+    cairo_status_t status;
+
+    status = _cairo_array_grow_by (array, num_elements);
+    if (unlikely (status))
+	return status;
+
+    assert (array->num_elements + num_elements <= array->size);
+
+    *elements = array->elements + array->num_elements * array->element_size;
+
+    array->num_elements += num_elements;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_array_num_elements:
+ * @array: a #cairo_array_t
+ * Returns: The number of elements stored in @array.
+ *
+ * This space was left intentionally blank, but gtk-doc filled it.
+ **/
+unsigned int
+_cairo_array_num_elements (const cairo_array_t *array)
+{
+    return array->num_elements;
+}
+
+/**
+ * _cairo_array_size:
+ * @array: a #cairo_array_t
+ * Returns: The number of elements for which there is currently space
+ * allocated in @array.
+ *
+ * This space was left intentionally blank, but gtk-doc filled it.
+ **/
+unsigned int
+_cairo_array_size (const cairo_array_t *array)
+{
+    return array->size;
+}
+
+/**
+ * _cairo_user_data_array_init:
+ * @array: a #cairo_user_data_array_t
+ *
+ * Initializes a #cairo_user_data_array_t structure for future
+ * use. After initialization, the array has no keys. Call
+ * _cairo_user_data_array_fini() to free any allocated memory
+ * when done using the array.
+ **/
+void
+_cairo_user_data_array_init (cairo_user_data_array_t *array)
+{
+    _cairo_array_init (array, sizeof (cairo_user_data_slot_t));
+}
+
+/**
+ * _cairo_user_data_array_fini:
+ * @array: a #cairo_user_data_array_t
+ *
+ * Destroys all current keys in the user data array and deallocates
+ * any memory allocated for the array itself.
+ **/
+void
+_cairo_user_data_array_fini (cairo_user_data_array_t *array)
+{
+    unsigned int num_slots;
+
+    num_slots = array->num_elements;
+    if (num_slots) {
+	cairo_user_data_slot_t *slots;
+
+	slots = _cairo_array_index (array, 0);
+	while (num_slots--) {
+	    cairo_user_data_slot_t *s = &slots[num_slots];
+	    if (s->user_data != NULL && s->destroy != NULL)
+		s->destroy (s->user_data);
+	}
+    }
+
+    _cairo_array_fini (array);
+}
+
+/**
+ * _cairo_user_data_array_get_data:
+ * @array: a #cairo_user_data_array_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Returns user data previously attached using the specified
+ * key.  If no user data has been attached with the given key this
+ * function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ **/
+void *
+_cairo_user_data_array_get_data (cairo_user_data_array_t     *array,
+				 const cairo_user_data_key_t *key)
+{
+    int i, num_slots;
+    cairo_user_data_slot_t *slots;
+
+    /* We allow this to support degenerate objects such as cairo_surface_nil. */
+    if (array == NULL)
+	return NULL;
+
+    num_slots = array->num_elements;
+    slots = _cairo_array_index (array, 0);
+    for (i = 0; i < num_slots; i++) {
+	if (slots[i].key == key)
+	    return slots[i].user_data;
+    }
+
+    return NULL;
+}
+
+/**
+ * _cairo_user_data_array_set_data:
+ * @array: a #cairo_user_data_array_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * user data array is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attaches user data to a user data array.  To remove user data,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ **/
+cairo_status_t
+_cairo_user_data_array_set_data (cairo_user_data_array_t     *array,
+				 const cairo_user_data_key_t *key,
+				 void			     *user_data,
+				 cairo_destroy_func_t	      destroy)
+{
+    cairo_status_t status;
+    int i, num_slots;
+    cairo_user_data_slot_t *slots, *slot, new_slot;
+
+    if (user_data) {
+	new_slot.key = key;
+	new_slot.user_data = user_data;
+	new_slot.destroy = destroy;
+    } else {
+	new_slot.key = NULL;
+	new_slot.user_data = NULL;
+	new_slot.destroy = NULL;
+    }
+
+    slot = NULL;
+    num_slots = array->num_elements;
+    slots = _cairo_array_index (array, 0);
+    for (i = 0; i < num_slots; i++) {
+	if (slots[i].key == key) {
+	    slot = &slots[i];
+	    if (slot->destroy && slot->user_data)
+		slot->destroy (slot->user_data);
+	    break;
+	}
+	if (user_data && slots[i].user_data == NULL) {
+	    slot = &slots[i];	/* Have to keep searching for an exact match */
+	}
+    }
+
+    if (slot) {
+	*slot = new_slot;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (user_data == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_array_append (array, &new_slot);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_user_data_array_copy (cairo_user_data_array_t	*dst,
+			     const cairo_user_data_array_t	*src)
+{
+    /* discard any existing user-data */
+    if (dst->num_elements != 0) {
+	_cairo_user_data_array_fini (dst);
+	_cairo_user_data_array_init (dst);
+    }
+
+    return _cairo_array_append_multiple (dst,
+					 _cairo_array_index_const (src, 0),
+					 src->num_elements);
+}
+
+void
+_cairo_user_data_array_foreach (cairo_user_data_array_t     *array,
+				void (*func) (const void *key,
+					      void *elt,
+					      void *closure),
+				void *closure)
+{
+    cairo_user_data_slot_t *slots;
+    int i, num_slots;
+
+    num_slots = array->num_elements;
+    slots = _cairo_array_index (array, 0);
+    for (i = 0; i < num_slots; i++) {
+	if (slots[i].user_data != NULL)
+	    func (slots[i].key, slots[i].user_data, closure);
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-atomic-private.h b/libs/cairo-1.16.0/src/cairo-atomic-private.h
new file mode 100644
index 0000000..4676185
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-atomic-private.h
@@ -0,0 +1,424 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ * Copyright © 2010 Andrea Canciani
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Andrea Canciani <ranma42@gmail.com>
+ */
+
+#ifndef CAIRO_ATOMIC_PRIVATE_H
+#define CAIRO_ATOMIC_PRIVATE_H
+
+# include "cairo-compiler-private.h"
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <assert.h>
+
+/* The autoconf on OpenBSD 4.5 produces the malformed constant name
+ * SIZEOF_VOID__ rather than SIZEOF_VOID_P.  Work around that here. */
+#if !defined(SIZEOF_VOID_P) && defined(SIZEOF_VOID__)
+# define SIZEOF_VOID_P SIZEOF_VOID__
+#endif
+
+CAIRO_BEGIN_DECLS
+
+/* C++11 atomic primitives were designed to be more flexible than the
+ * __sync_* family of primitives.  Despite the name, they are available
+ * in C as well as C++.  The motivating reason for using them is that
+ * for _cairo_atomic_{int,ptr}_get, the compiler is able to see that
+ * the load is intended to be atomic, as opposed to the __sync_*
+ * version, below, where the load looks like a plain load.  Having
+ * the load appear atomic to the compiler is particular important for
+ * tools like ThreadSanitizer so they don't report false positives on
+ * memory operations that we intend to be atomic.
+ */
+#if HAVE_CXX11_ATOMIC_PRIMITIVES
+
+#define HAS_ATOMIC_OPS 1
+
+typedef int cairo_atomic_int_t;
+
+static cairo_always_inline cairo_atomic_int_t
+_cairo_atomic_int_get (cairo_atomic_int_t *x)
+{
+    return __atomic_load_n(x, __ATOMIC_SEQ_CST);
+}
+
+static cairo_always_inline cairo_atomic_int_t
+_cairo_atomic_int_get_relaxed (cairo_atomic_int_t *x)
+{
+    return __atomic_load_n(x, __ATOMIC_RELAXED);
+}
+
+static cairo_always_inline void
+_cairo_atomic_int_set_relaxed (cairo_atomic_int_t *x, cairo_atomic_int_t val)
+{
+    __atomic_store_n(x, val, __ATOMIC_RELAXED);
+}
+
+static cairo_always_inline void *
+_cairo_atomic_ptr_get (void **x)
+{
+    return __atomic_load_n(x, __ATOMIC_SEQ_CST);
+}
+
+# define _cairo_atomic_int_inc(x) ((void) __atomic_fetch_add(x, 1, __ATOMIC_SEQ_CST))
+# define _cairo_atomic_int_dec(x) ((void) __atomic_fetch_sub(x, 1, __ATOMIC_SEQ_CST))
+# define _cairo_atomic_int_dec_and_test(x) (__atomic_fetch_sub(x, 1, __ATOMIC_SEQ_CST) == 1)
+
+#if SIZEOF_VOID_P==SIZEOF_INT
+typedef int cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG
+typedef long cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG
+typedef long long cairo_atomic_intptr_t;
+#else
+#error No matching integer pointer type
+#endif
+
+static cairo_always_inline cairo_bool_t
+_cairo_atomic_int_cmpxchg_impl(cairo_atomic_int_t *x,
+			       cairo_atomic_int_t oldv,
+			       cairo_atomic_int_t newv)
+{
+    cairo_atomic_int_t expected = oldv;
+    return __atomic_compare_exchange_n(x, &expected, newv, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
+}
+
+#define _cairo_atomic_int_cmpxchg(x, oldv, newv) \
+  _cairo_atomic_int_cmpxchg_impl(x, oldv, newv)
+
+static cairo_always_inline cairo_atomic_int_t
+_cairo_atomic_int_cmpxchg_return_old_impl(cairo_atomic_int_t *x,
+					  cairo_atomic_int_t oldv,
+					  cairo_atomic_int_t newv)
+{
+    cairo_atomic_int_t expected = oldv;
+    (void) __atomic_compare_exchange_n(x, &expected, newv, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
+    return expected;
+}
+
+#define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) \
+  _cairo_atomic_int_cmpxchg_return_old_impl(x, oldv, newv)
+
+static cairo_always_inline cairo_bool_t
+_cairo_atomic_ptr_cmpxchg_impl(void **x, void *oldv, void *newv)
+{
+    void *expected = oldv;
+    return __atomic_compare_exchange_n(x, &expected, newv, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
+}
+
+#define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \
+  _cairo_atomic_ptr_cmpxchg_impl(x, oldv, newv)
+
+static cairo_always_inline void *
+_cairo_atomic_ptr_cmpxchg_return_old_impl(void **x, void *oldv, void *newv)
+{
+    void *expected = oldv;
+    (void) __atomic_compare_exchange_n(x, &expected, newv, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
+    return expected;
+}
+
+#define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) \
+  _cairo_atomic_ptr_cmpxchg_return_old_impl(x, oldv, newv)
+
+#endif
+
+#if HAVE_GCC_LEGACY_ATOMICS
+
+#define HAS_ATOMIC_OPS 1
+
+typedef int cairo_atomic_int_t;
+
+static cairo_always_inline cairo_atomic_int_t
+_cairo_atomic_int_get (cairo_atomic_int_t *x)
+{
+    __sync_synchronize ();
+    return *x;
+}
+
+static cairo_always_inline cairo_atomic_int_t
+_cairo_atomic_int_get_relaxed (cairo_atomic_int_t *x)
+{
+    return *x;
+}
+
+static cairo_always_inline void
+_cairo_atomic_int_set_relaxed (cairo_atomic_int_t *x, cairo_atomic_int_t val)
+{
+    *x = val;
+}
+
+static cairo_always_inline void *
+_cairo_atomic_ptr_get (void **x)
+{
+    __sync_synchronize ();
+    return *x;
+}
+
+# define _cairo_atomic_int_inc(x) ((void) __sync_fetch_and_add(x, 1))
+# define _cairo_atomic_int_dec(x) ((void) __sync_fetch_and_add(x, -1))
+# define _cairo_atomic_int_dec_and_test(x) (__sync_fetch_and_add(x, -1) == 1)
+# define _cairo_atomic_int_cmpxchg(x, oldv, newv) __sync_bool_compare_and_swap (x, oldv, newv)
+# define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) __sync_val_compare_and_swap (x, oldv, newv)
+
+#if SIZEOF_VOID_P==SIZEOF_INT
+typedef int cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG
+typedef long cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG
+typedef long long cairo_atomic_intptr_t;
+#else
+#error No matching integer pointer type
+#endif
+
+# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \
+    __sync_bool_compare_and_swap ((cairo_atomic_intptr_t*)x, (cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv)
+
+# define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) \
+    _cairo_atomic_intptr_to_voidptr (__sync_val_compare_and_swap ((cairo_atomic_intptr_t*)x, (cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv))
+
+#endif
+
+#if HAVE_LIB_ATOMIC_OPS
+#include <atomic_ops.h>
+
+#define HAS_ATOMIC_OPS 1
+
+typedef  AO_t cairo_atomic_int_t;
+
+# define _cairo_atomic_int_get(x) (AO_load_full (x))
+# define _cairo_atomic_int_get_relaxed(x) (AO_load_full (x))
+# define _cairo_atomic_int_set_relaxed(x, val) (AO_store_full ((x), (val)))
+
+# define _cairo_atomic_int_inc(x) ((void) AO_fetch_and_add1_full(x))
+# define _cairo_atomic_int_dec(x) ((void) AO_fetch_and_sub1_full(x))
+# define _cairo_atomic_int_dec_and_test(x) (AO_fetch_and_sub1_full(x) == 1)
+# define _cairo_atomic_int_cmpxchg(x, oldv, newv) AO_compare_and_swap_full(x, oldv, newv)
+
+#if SIZEOF_VOID_P==SIZEOF_INT
+typedef unsigned int cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG
+typedef unsigned long cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG
+typedef unsigned long long cairo_atomic_intptr_t;
+#else
+#error No matching integer pointer type
+#endif
+
+# define _cairo_atomic_ptr_get(x) _cairo_atomic_intptr_to_voidptr (AO_load_full (x))
+# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \
+    _cairo_atomic_int_cmpxchg ((cairo_atomic_intptr_t*)(x), (cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv)
+
+#endif
+
+#if HAVE_OS_ATOMIC_OPS
+#include <libkern/OSAtomic.h>
+
+#define HAS_ATOMIC_OPS 1
+
+typedef int32_t cairo_atomic_int_t;
+
+# define _cairo_atomic_int_get(x) (OSMemoryBarrier(), *(x))
+# define _cairo_atomic_int_get_relaxed(x) *(x)
+# define _cairo_atomic_int_set_relaxed(x, val) *(x) = (val)
+
+# define _cairo_atomic_int_inc(x) ((void) OSAtomicIncrement32Barrier (x))
+# define _cairo_atomic_int_dec(x) ((void) OSAtomicDecrement32Barrier (x))
+# define _cairo_atomic_int_dec_and_test(x) (OSAtomicDecrement32Barrier (x) == 0)
+# define _cairo_atomic_int_cmpxchg(x, oldv, newv) OSAtomicCompareAndSwap32Barrier(oldv, newv, x)
+
+#if SIZEOF_VOID_P==4
+typedef int32_t cairo_atomic_intptr_t;
+# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \
+    OSAtomicCompareAndSwap32Barrier((cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv, (cairo_atomic_intptr_t *)x)
+
+#elif SIZEOF_VOID_P==8
+typedef int64_t cairo_atomic_intptr_t;
+# define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) \
+    OSAtomicCompareAndSwap64Barrier((cairo_atomic_intptr_t)oldv, (cairo_atomic_intptr_t)newv, (cairo_atomic_intptr_t *)x)
+
+#else
+#error No matching integer pointer type
+#endif
+
+# define _cairo_atomic_ptr_get(x) (OSMemoryBarrier(), *(x))
+
+#endif
+
+#ifndef HAS_ATOMIC_OPS
+
+#if SIZEOF_VOID_P==SIZEOF_INT
+typedef unsigned int cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG
+typedef unsigned long cairo_atomic_intptr_t;
+#elif SIZEOF_VOID_P==SIZEOF_LONG_LONG
+typedef unsigned long long cairo_atomic_intptr_t;
+#else
+#error No matching integer pointer type
+#endif
+
+typedef cairo_atomic_intptr_t cairo_atomic_int_t;
+
+cairo_private void
+_cairo_atomic_int_inc (cairo_atomic_int_t *x);
+
+#define _cairo_atomic_int_dec(x) _cairo_atomic_int_dec_and_test(x)
+
+cairo_private cairo_bool_t
+_cairo_atomic_int_dec_and_test (cairo_atomic_int_t *x);
+
+cairo_private cairo_atomic_int_t
+_cairo_atomic_int_cmpxchg_return_old_impl (cairo_atomic_int_t *x, cairo_atomic_int_t oldv, cairo_atomic_int_t newv);
+
+cairo_private void *
+_cairo_atomic_ptr_cmpxchg_return_old_impl (void **x, void *oldv, void *newv);
+
+#define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_int_cmpxchg_return_old_impl (x, oldv, newv)
+#define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_ptr_cmpxchg_return_old_impl (x, oldv, newv)
+
+#ifdef ATOMIC_OP_NEEDS_MEMORY_BARRIER
+cairo_private cairo_atomic_int_t
+_cairo_atomic_int_get (cairo_atomic_int_t *x);
+cairo_private cairo_atomic_int_t
+_cairo_atomic_int_get_relaxed (cairo_atomic_int_t *x);
+void
+_cairo_atomic_int_set_relaxed (cairo_atomic_int_t *x, cairo_atomic_int_t val);
+# define _cairo_atomic_ptr_get(x) (void *) _cairo_atomic_int_get((cairo_atomic_int_t *) x)
+#else
+# define _cairo_atomic_int_get(x) (*x)
+# define _cairo_atomic_int_get_relaxed(x) (*x)
+# define _cairo_atomic_int_set_relaxed(x, val) (*x) = (val)
+# define _cairo_atomic_ptr_get(x) (*x)
+#endif
+
+#else
+
+/* Workaround GCC complaining about casts */
+static cairo_always_inline void *
+_cairo_atomic_intptr_to_voidptr (cairo_atomic_intptr_t x)
+{
+  return (void *) x;
+}
+
+static cairo_always_inline cairo_atomic_int_t
+_cairo_atomic_int_cmpxchg_return_old_fallback(cairo_atomic_int_t *x, cairo_atomic_int_t oldv, cairo_atomic_int_t newv)
+{
+    cairo_atomic_int_t curr;
+
+    do {
+        curr = _cairo_atomic_int_get (x);
+    } while (curr == oldv && !_cairo_atomic_int_cmpxchg (x, oldv, newv));
+
+    return curr;
+}
+
+static cairo_always_inline void *
+_cairo_atomic_ptr_cmpxchg_return_old_fallback(void **x, void *oldv, void *newv)
+{
+    void *curr;
+
+    do {
+        curr = _cairo_atomic_ptr_get (x);
+    } while (curr == oldv && !_cairo_atomic_ptr_cmpxchg (x, oldv, newv));
+
+    return curr;
+}
+#endif
+
+#ifndef _cairo_atomic_int_cmpxchg_return_old
+#define _cairo_atomic_int_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_int_cmpxchg_return_old_fallback (x, oldv, newv)
+#endif
+
+#ifndef _cairo_atomic_ptr_cmpxchg_return_old
+#define _cairo_atomic_ptr_cmpxchg_return_old(x, oldv, newv) _cairo_atomic_ptr_cmpxchg_return_old_fallback (x, oldv, newv)
+#endif
+
+#ifndef _cairo_atomic_int_cmpxchg
+#define _cairo_atomic_int_cmpxchg(x, oldv, newv) (_cairo_atomic_int_cmpxchg_return_old (x, oldv, newv) == oldv)
+#endif
+
+#ifndef _cairo_atomic_ptr_cmpxchg
+#define _cairo_atomic_ptr_cmpxchg(x, oldv, newv) (_cairo_atomic_ptr_cmpxchg_return_old (x, oldv, newv) == oldv)
+#endif
+
+#define _cairo_atomic_uint_get(x) _cairo_atomic_int_get(x)
+#define _cairo_atomic_uint_cmpxchg(x, oldv, newv) \
+    _cairo_atomic_int_cmpxchg((cairo_atomic_int_t *)x, oldv, newv)
+
+#define _cairo_status_set_error(status, err) do { \
+    int ret__; \
+    assert (err < CAIRO_STATUS_LAST_STATUS); \
+    /* hide compiler warnings about cairo_status_t != int (gcc treats its as \
+     * an unsigned integer instead, and about ignoring the return value. */  \
+    ret__ = _cairo_atomic_int_cmpxchg ((cairo_atomic_int_t *) status, CAIRO_STATUS_SUCCESS, err); \
+    (void) ret__; \
+} while (0)
+
+typedef cairo_atomic_int_t cairo_atomic_once_t;
+
+#define CAIRO_ATOMIC_ONCE_UNINITIALIZED (0)
+#define CAIRO_ATOMIC_ONCE_INITIALIZING  (1)
+#define CAIRO_ATOMIC_ONCE_INITIALIZED   (2)
+#define CAIRO_ATOMIC_ONCE_INIT          CAIRO_ATOMIC_ONCE_UNINITIALIZED
+
+static cairo_always_inline cairo_bool_t
+_cairo_atomic_init_once_enter(cairo_atomic_once_t *once)
+{
+    if (likely(_cairo_atomic_int_get(once) == CAIRO_ATOMIC_ONCE_INITIALIZED))
+	return 0;
+
+    if (_cairo_atomic_int_cmpxchg(once,
+				  CAIRO_ATOMIC_ONCE_UNINITIALIZED,
+				  CAIRO_ATOMIC_ONCE_INITIALIZING))
+	return 1;
+
+    while (_cairo_atomic_int_get(once) != CAIRO_ATOMIC_ONCE_INITIALIZED) {}
+    return 0;
+}
+
+static cairo_always_inline void
+_cairo_atomic_init_once_leave(cairo_atomic_once_t *once)
+{
+    if (unlikely(!_cairo_atomic_int_cmpxchg(once,
+					    CAIRO_ATOMIC_ONCE_INITIALIZING,
+					    CAIRO_ATOMIC_ONCE_INITIALIZED)))
+	assert (0 && "incorrect use of _cairo_atomic_init_once API (once != CAIRO_ATOMIC_ONCE_INITIALIZING)");
+}
+
+CAIRO_END_DECLS
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-atomic.c b/libs/cairo-1.16.0/src/cairo-atomic.c
new file mode 100644
index 0000000..2af50cd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-atomic.c
@@ -0,0 +1,120 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-atomic-private.h"
+#include "cairo-mutex-private.h"
+
+#ifdef HAS_ATOMIC_OPS
+COMPILE_TIME_ASSERT(sizeof(void*) == sizeof(int) ||
+		    sizeof(void*) == sizeof(long) ||
+		    sizeof(void*) == sizeof(long long));
+#else
+void
+_cairo_atomic_int_inc (cairo_atomic_intptr_t *x)
+{
+    CAIRO_MUTEX_LOCK (_cairo_atomic_mutex);
+    *x += 1;
+    CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex);
+}
+
+cairo_bool_t
+_cairo_atomic_int_dec_and_test (cairo_atomic_intptr_t *x)
+{
+    cairo_bool_t ret;
+
+    CAIRO_MUTEX_LOCK (_cairo_atomic_mutex);
+    ret = --*x == 0;
+    CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex);
+
+    return ret;
+}
+
+cairo_atomic_intptr_t
+_cairo_atomic_int_cmpxchg_return_old_impl (cairo_atomic_intptr_t *x, cairo_atomic_intptr_t oldv, cairo_atomic_intptr_t newv)
+{
+    cairo_atomic_intptr_t ret;
+
+    CAIRO_MUTEX_LOCK (_cairo_atomic_mutex);
+    ret = *x;
+    if (ret == oldv)
+	*x = newv;
+    CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex);
+
+    return ret;
+}
+
+void *
+_cairo_atomic_ptr_cmpxchg_return_old_impl (void **x, void *oldv, void *newv)
+{
+    void *ret;
+
+    CAIRO_MUTEX_LOCK (_cairo_atomic_mutex);
+    ret = *x;
+    if (ret == oldv)
+	*x = newv;
+    CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex);
+
+    return ret;
+}
+
+#ifdef ATOMIC_OP_NEEDS_MEMORY_BARRIER
+cairo_atomic_intptr_t
+_cairo_atomic_int_get (cairo_atomic_intptr_t *x)
+{
+    cairo_atomic_intptr_t ret;
+
+    CAIRO_MUTEX_LOCK (_cairo_atomic_mutex);
+    ret = *x;
+    CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex);
+
+    return ret;
+}
+
+cairo_atomic_intptr_t
+_cairo_atomic_int_get_relaxed (cairo_atomic_intptr_t *x)
+{
+    return _cairo_atomic_int_get (x);
+}
+
+void
+_cairo_atomic_int_set_relaxed (cairo_atomic_intptr_t *x, cairo_atomic_intptr_t val)
+{
+    CAIRO_MUTEX_LOCK (_cairo_atomic_mutex);
+    *x = val;
+    CAIRO_MUTEX_UNLOCK (_cairo_atomic_mutex);
+}
+#endif
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-backend-private.h b/libs/cairo-1.16.0/src/cairo-backend-private.h
new file mode 100644
index 0000000..67607c1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-backend-private.h
@@ -0,0 +1,204 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_BACKEND_PRIVATE_H
+#define CAIRO_BACKEND_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-private.h"
+
+typedef enum _cairo_backend_type {
+    CAIRO_TYPE_DEFAULT,
+    CAIRO_TYPE_SKIA,
+} cairo_backend_type_t;
+
+struct _cairo_backend {
+    cairo_backend_type_t type;
+    void (*destroy) (void *cr);
+
+    cairo_surface_t *(*get_original_target) (void *cr);
+    cairo_surface_t *(*get_current_target) (void *cr);
+
+    cairo_status_t (*save) (void *cr);
+    cairo_status_t (*restore) (void *cr);
+
+    cairo_status_t (*push_group) (void *cr, cairo_content_t content);
+    cairo_pattern_t *(*pop_group) (void *cr);
+
+    cairo_status_t (*set_source_rgba) (void *cr, double red, double green, double blue, double alpha);
+    cairo_status_t (*set_source_surface) (void *cr, cairo_surface_t *surface, double x, double y);
+    cairo_status_t (*set_source) (void *cr, cairo_pattern_t *source);
+    cairo_pattern_t *(*get_source) (void *cr);
+
+    cairo_status_t (*set_antialias) (void *cr, cairo_antialias_t antialias);
+    cairo_status_t (*set_dash) (void *cr, const double *dashes, int num_dashes, double offset);
+    cairo_status_t (*set_fill_rule) (void *cr, cairo_fill_rule_t fill_rule);
+    cairo_status_t (*set_line_cap) (void *cr, cairo_line_cap_t line_cap);
+    cairo_status_t (*set_line_join) (void *cr, cairo_line_join_t line_join);
+    cairo_status_t (*set_line_width) (void *cr, double line_width);
+    cairo_status_t (*set_miter_limit) (void *cr, double limit);
+    cairo_status_t (*set_opacity) (void *cr, double opacity);
+    cairo_status_t (*set_operator) (void *cr, cairo_operator_t op);
+    cairo_status_t (*set_tolerance) (void *cr, double tolerance);
+
+    cairo_antialias_t (*get_antialias) (void *cr);
+    void (*get_dash) (void *cr, double *dashes, int *num_dashes, double *offset);
+    cairo_fill_rule_t (*get_fill_rule) (void *cr);
+    cairo_line_cap_t (*get_line_cap) (void *cr);
+    cairo_line_join_t (*get_line_join) (void *cr);
+    double (*get_line_width) (void *cr);
+    double (*get_miter_limit) (void *cr);
+    double (*get_opacity) (void *cr);
+    cairo_operator_t (*get_operator) (void *cr);
+    double (*get_tolerance) (void *cr);
+
+    cairo_status_t (*translate) (void *cr, double tx, double ty);
+    cairo_status_t (*scale) (void *cr, double sx, double sy);
+    cairo_status_t (*rotate) (void *cr, double theta);
+    cairo_status_t (*transform) (void *cr, const cairo_matrix_t *matrix);
+    cairo_status_t (*set_matrix) (void *cr, const cairo_matrix_t *matrix);
+    cairo_status_t (*set_identity_matrix) (void *cr);
+    void (*get_matrix) (void *cr, cairo_matrix_t *matrix);
+
+    void (*user_to_device) (void *cr, double *x, double *y);
+    void (*user_to_device_distance) (void *cr, double *x, double *y);
+    void (*device_to_user) (void *cr, double *x, double *y);
+    void (*device_to_user_distance) (void *cr, double *x, double *y);
+
+    void (*user_to_backend) (void *cr, double *x, double *y);
+    void (*user_to_backend_distance) (void *cr, double *x, double *y);
+    void (*backend_to_user) (void *cr, double *x, double *y);
+    void (*backend_to_user_distance) (void *cr, double *x, double *y);
+
+    cairo_status_t (*new_path) (void *cr);
+    cairo_status_t (*new_sub_path) (void *cr);
+    cairo_status_t (*move_to) (void *cr, double x, double y);
+    cairo_status_t (*rel_move_to) (void *cr, double dx, double dy);
+    cairo_status_t (*line_to) (void *cr, double x, double y);
+    cairo_status_t (*rel_line_to) (void *cr, double dx, double dy);
+    cairo_status_t (*curve_to) (void *cr, double x1, double y1, double x2, double y2, double x3, double y3);
+    cairo_status_t (*rel_curve_to) (void *cr, double dx1, double dy1, double dx2, double dy2, double dx3, double dy3);
+    cairo_status_t (*arc_to) (void *cr, double x1, double y1, double x2, double y2, double radius);
+    cairo_status_t (*rel_arc_to) (void *cr, double dx1, double dy1, double dx2, double dy2, double radius);
+    cairo_status_t (*close_path) (void *cr);
+
+    cairo_status_t (*arc) (void *cr, double xc, double yc, double radius, double angle1, double angle2, cairo_bool_t forward);
+    cairo_status_t (*rectangle) (void *cr, double x, double y, double width, double height);
+
+    void (*path_extents) (void *cr, double *x1, double *y1, double *x2, double *y2);
+    cairo_bool_t (*has_current_point) (void *cr);
+    cairo_bool_t (*get_current_point) (void *cr, double *x, double *y);
+
+    cairo_path_t *(*copy_path) (void *cr);
+    cairo_path_t *(*copy_path_flat) (void *cr);
+    cairo_status_t (*append_path) (void *cr, const cairo_path_t *path);
+
+    cairo_status_t (*stroke_to_path) (void *cr);
+
+    cairo_status_t (*clip) (void *cr);
+    cairo_status_t (*clip_preserve) (void *cr);
+    cairo_status_t (*in_clip) (void *cr, double x, double y, cairo_bool_t *inside);
+    cairo_status_t (*clip_extents) (void *cr, double *x1, double *y1, double *x2, double *y2);
+    cairo_status_t (*reset_clip) (void *cr);
+    cairo_rectangle_list_t *(*clip_copy_rectangle_list) (void *cr);
+
+    cairo_status_t (*paint) (void *cr);
+    cairo_status_t (*paint_with_alpha) (void *cr, double opacity);
+    cairo_status_t (*mask) (void *cr, cairo_pattern_t *pattern);
+
+    cairo_status_t (*stroke) (void *cr);
+    cairo_status_t (*stroke_preserve) (void *cr);
+    cairo_status_t (*in_stroke) (void *cr, double x, double y, cairo_bool_t *inside);
+    cairo_status_t (*stroke_extents) (void *cr, double *x1, double *y1, double *x2, double *y2);
+
+    cairo_status_t (*fill) (void *cr);
+    cairo_status_t (*fill_preserve) (void *cr);
+    cairo_status_t (*in_fill) (void *cr, double x, double y, cairo_bool_t *inside);
+    cairo_status_t (*fill_extents) (void *cr, double *x1, double *y1, double *x2, double *y2);
+
+    cairo_status_t (*set_font_face) (void *cr, cairo_font_face_t *font_face);
+    cairo_font_face_t *(*get_font_face) (void *cr);
+    cairo_status_t (*set_font_size) (void *cr, double size);
+    cairo_status_t (*set_font_matrix) (void *cr, const cairo_matrix_t *matrix);
+    void (*get_font_matrix) (void *cr, cairo_matrix_t *matrix);
+    cairo_status_t (*set_font_options) (void *cr, const cairo_font_options_t *options);
+    void (*get_font_options) (void *cr, cairo_font_options_t *options);
+    cairo_status_t (*set_scaled_font) (void *cr, cairo_scaled_font_t *scaled_font);
+    cairo_scaled_font_t *(*get_scaled_font) (void *cr);
+    cairo_status_t (*font_extents) (void *cr, cairo_font_extents_t *extents);
+
+    cairo_status_t (*glyphs) (void *cr,
+			      const cairo_glyph_t *glyphs, int num_glyphs,
+			      cairo_glyph_text_info_t *info);
+    cairo_status_t (*glyph_path) (void *cr,
+				  const cairo_glyph_t *glyphs, int num_glyphs);
+
+    cairo_status_t (*glyph_extents) (void *cr,
+				     const cairo_glyph_t *glyphs,
+				     int num_glyphs,
+				     cairo_text_extents_t *extents);
+
+    cairo_status_t (*copy_page) (void *cr);
+    cairo_status_t (*show_page) (void *cr);
+
+    cairo_status_t (*tag_begin) (void *cr, const char *tag_name, const char *attributes);
+    cairo_status_t (*tag_end) (void *cr, const char *tag_name);
+};
+
+static inline void
+_cairo_backend_to_user (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->backend_to_user (cr, x, y);
+}
+
+static inline void
+_cairo_backend_to_user_distance (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->backend_to_user_distance (cr, x, y);
+}
+
+static inline void
+_cairo_user_to_backend (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->user_to_backend (cr, x, y);
+}
+
+static inline void
+_cairo_user_to_backend_distance (cairo_t *cr, double *x, double *y)
+{
+    cr->backend->user_to_backend_distance (cr, x, y);
+}
+
+#endif /* CAIRO_BACKEND_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-base64-stream.c b/libs/cairo-1.16.0/src/cairo-base64-stream.c
new file mode 100644
index 0000000..6352545
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-base64-stream.c
@@ -0,0 +1,144 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005-2007 Emmanuel Pacaud <emmanuel.pacaud@free.fr>
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Author(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+#include "cairo-output-stream-private.h"
+
+typedef struct _cairo_base64_stream {
+    cairo_output_stream_t base;
+    cairo_output_stream_t *output;
+    unsigned int in_mem;
+    unsigned int trailing;
+    unsigned char src[3];
+} cairo_base64_stream_t;
+
+static char const base64_table[64] =
+"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static cairo_status_t
+_cairo_base64_stream_write (cairo_output_stream_t *base,
+			    const unsigned char	  *data,
+			    unsigned int	   length)
+{
+    cairo_base64_stream_t * stream = (cairo_base64_stream_t *) base;
+    unsigned char *src = stream->src;
+    unsigned int i;
+
+    if (stream->in_mem + length < 3) {
+	for (i = 0; i < length; i++) {
+	    src[i + stream->in_mem] = *data++;
+	}
+	stream->in_mem += length;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    do {
+	unsigned char dst[4];
+
+	for (i = stream->in_mem; i < 3; i++) {
+	    src[i] = *data++;
+	    length--;
+	}
+	stream->in_mem = 0;
+
+	dst[0] = base64_table[src[0] >> 2];
+	dst[1] = base64_table[(src[0] & 0x03) << 4 | src[1] >> 4];
+	dst[2] = base64_table[(src[1] & 0x0f) << 2 | src[2] >> 6];
+	dst[3] = base64_table[src[2] & 0xfc >> 2];
+	/* Special case for the last missing bits */
+	switch (stream->trailing) {
+	    case 2:
+		dst[2] = '=';
+	    case 1:
+		dst[3] = '=';
+	    default:
+		break;
+	}
+	_cairo_output_stream_write (stream->output, dst, 4);
+    } while (length >= 3);
+
+    for (i = 0; i < length; i++) {
+	src[i] = *data++;
+    }
+    stream->in_mem = length;
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+static cairo_status_t
+_cairo_base64_stream_close (cairo_output_stream_t *base)
+{
+    cairo_base64_stream_t *stream = (cairo_base64_stream_t *) base;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (stream->in_mem > 0) {
+	memset (stream->src + stream->in_mem, 0, 3 - stream->in_mem);
+	stream->trailing = 3 - stream->in_mem;
+	stream->in_mem = 3;
+	status = _cairo_base64_stream_write (base, NULL, 0);
+    }
+
+    return status;
+}
+
+cairo_output_stream_t *
+_cairo_base64_stream_create (cairo_output_stream_t *output)
+{
+    cairo_base64_stream_t *stream;
+
+    if (output->status)
+	return _cairo_output_stream_create_in_error (output->status);
+
+    stream = _cairo_malloc (sizeof (cairo_base64_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       _cairo_base64_stream_write,
+			       NULL,
+			       _cairo_base64_stream_close);
+
+    stream->output = output;
+    stream->in_mem = 0;
+    stream->trailing = 0;
+
+    return &stream->base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-base85-stream.c b/libs/cairo-1.16.0/src/cairo-base85-stream.c
new file mode 100644
index 0000000..3202f1e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-base85-stream.c
@@ -0,0 +1,131 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Author(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+#include "cairo-output-stream-private.h"
+
+typedef struct _cairo_base85_stream {
+    cairo_output_stream_t base;
+    cairo_output_stream_t *output;
+    unsigned char four_tuple[4];
+    int pending;
+} cairo_base85_stream_t;
+
+static void
+_expand_four_tuple_to_five (unsigned char four_tuple[4],
+			    unsigned char five_tuple[5],
+			    cairo_bool_t *all_zero)
+{
+    uint32_t value;
+    int digit, i;
+
+    value = four_tuple[0] << 24 | four_tuple[1] << 16 | four_tuple[2] << 8 | four_tuple[3];
+    if (all_zero)
+	*all_zero = TRUE;
+    for (i = 0; i < 5; i++) {
+	digit = value % 85;
+	if (digit != 0 && all_zero)
+	    *all_zero = FALSE;
+	five_tuple[4-i] = digit + 33;
+	value = value / 85;
+    }
+}
+
+static cairo_status_t
+_cairo_base85_stream_write (cairo_output_stream_t *base,
+			    const unsigned char	  *data,
+			    unsigned int	   length)
+{
+    cairo_base85_stream_t *stream = (cairo_base85_stream_t *) base;
+    const unsigned char *ptr = data;
+    unsigned char five_tuple[5];
+    cairo_bool_t is_zero;
+
+    while (length) {
+	stream->four_tuple[stream->pending++] = *ptr++;
+	length--;
+	if (stream->pending == 4) {
+	    _expand_four_tuple_to_five (stream->four_tuple, five_tuple, &is_zero);
+	    if (is_zero)
+		_cairo_output_stream_write (stream->output, "z", 1);
+	    else
+		_cairo_output_stream_write (stream->output, five_tuple, 5);
+	    stream->pending = 0;
+	}
+    }
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+static cairo_status_t
+_cairo_base85_stream_close (cairo_output_stream_t *base)
+{
+    cairo_base85_stream_t *stream = (cairo_base85_stream_t *) base;
+    unsigned char five_tuple[5];
+
+    if (stream->pending) {
+	memset (stream->four_tuple + stream->pending, 0, 4 - stream->pending);
+	_expand_four_tuple_to_five (stream->four_tuple, five_tuple, NULL);
+	_cairo_output_stream_write (stream->output, five_tuple, stream->pending + 1);
+    }
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+cairo_output_stream_t *
+_cairo_base85_stream_create (cairo_output_stream_t *output)
+{
+    cairo_base85_stream_t *stream;
+
+    if (output->status)
+	return _cairo_output_stream_create_in_error (output->status);
+
+    stream = _cairo_malloc (sizeof (cairo_base85_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       _cairo_base85_stream_write,
+			       NULL,
+			       _cairo_base85_stream_close);
+    stream->output = output;
+    stream->pending = 0;
+
+    return &stream->base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-bentley-ottmann-rectangular.c b/libs/cairo-1.16.0/src/cairo-bentley-ottmann-rectangular.c
new file mode 100644
index 0000000..65f95d7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-bentley-ottmann-rectangular.c
@@ -0,0 +1,895 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-combsort-inline.h"
+#include "cairo-list-private.h"
+#include "cairo-traps-private.h"
+
+#include <setjmp.h>
+
+typedef struct _rectangle rectangle_t;
+typedef struct _edge edge_t;
+
+struct _edge {
+    edge_t *next, *prev;
+    edge_t *right;
+    cairo_fixed_t x, top;
+    int dir;
+};
+
+struct _rectangle {
+    edge_t left, right;
+    int32_t top, bottom;
+};
+
+#define UNROLL3(x) x x x
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef struct _sweep_line {
+    rectangle_t **rectangles;
+    rectangle_t **stop;
+    edge_t head, tail, *insert, *cursor;
+    int32_t current_y;
+    int32_t last_y;
+    int stop_size;
+
+    int32_t insert_x;
+    cairo_fill_rule_t fill_rule;
+
+    cairo_bool_t do_traps;
+    void *container;
+
+    jmp_buf unwind;
+} sweep_line_t;
+
+#define DEBUG_TRAPS 0
+
+#if DEBUG_TRAPS
+static void
+dump_traps (cairo_traps_t *traps, const char *filename)
+{
+    FILE *file;
+    int n;
+
+    if (getenv ("CAIRO_DEBUG_TRAPS") == NULL)
+	return;
+
+    file = fopen (filename, "a");
+    if (file != NULL) {
+	for (n = 0; n < traps->num_traps; n++) {
+	    fprintf (file, "%d %d L:(%d, %d), (%d, %d) R:(%d, %d), (%d, %d)\n",
+		     traps->traps[n].top,
+		     traps->traps[n].bottom,
+		     traps->traps[n].left.p1.x,
+		     traps->traps[n].left.p1.y,
+		     traps->traps[n].left.p2.x,
+		     traps->traps[n].left.p2.y,
+		     traps->traps[n].right.p1.x,
+		     traps->traps[n].right.p1.y,
+		     traps->traps[n].right.p2.x,
+		     traps->traps[n].right.p2.y);
+	}
+	fprintf (file, "\n");
+	fclose (file);
+    }
+}
+#else
+#define dump_traps(traps, filename)
+#endif
+
+static inline int
+rectangle_compare_start (const rectangle_t *a,
+			 const rectangle_t *b)
+{
+    return a->top - b->top;
+}
+
+static inline int
+rectangle_compare_stop (const rectangle_t *a,
+			 const rectangle_t *b)
+{
+    return a->bottom - b->bottom;
+}
+
+static inline void
+pqueue_push (sweep_line_t *sweep, rectangle_t *rectangle)
+{
+    rectangle_t **elements;
+    int i, parent;
+
+    elements = sweep->stop;
+    for (i = ++sweep->stop_size;
+	 i != PQ_FIRST_ENTRY &&
+	 rectangle_compare_stop (rectangle,
+				 elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = rectangle;
+}
+
+static inline void
+rectangle_pop_stop (sweep_line_t *sweep)
+{
+    rectangle_t **elements = sweep->stop;
+    rectangle_t *tail;
+    int child, i;
+
+    tail = elements[sweep->stop_size--];
+    if (sweep->stop_size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= sweep->stop_size;
+	 i = child)
+    {
+	if (child != sweep->stop_size &&
+	    rectangle_compare_stop (elements[child+1],
+				    elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (rectangle_compare_stop (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline rectangle_t *
+rectangle_pop_start (sweep_line_t *sweep_line)
+{
+    return *sweep_line->rectangles++;
+}
+
+static inline rectangle_t *
+rectangle_peek_stop (sweep_line_t *sweep_line)
+{
+    return sweep_line->stop[PQ_FIRST_ENTRY];
+}
+
+CAIRO_COMBSORT_DECLARE (_rectangle_sort,
+			rectangle_t *,
+			rectangle_compare_start)
+
+static void
+sweep_line_init (sweep_line_t	 *sweep_line,
+		 rectangle_t	**rectangles,
+		 int		  num_rectangles,
+		 cairo_fill_rule_t fill_rule,
+		 cairo_bool_t	 do_traps,
+		 void		*container)
+{
+    rectangles[-2] = NULL;
+    rectangles[-1] = NULL;
+    rectangles[num_rectangles] = NULL;
+    sweep_line->rectangles = rectangles;
+    sweep_line->stop = rectangles - 2;
+    sweep_line->stop_size = 0;
+
+    sweep_line->insert = NULL;
+    sweep_line->insert_x = INT_MAX;
+    sweep_line->cursor = &sweep_line->tail;
+
+    sweep_line->head.dir = 0;
+    sweep_line->head.x = INT32_MIN;
+    sweep_line->head.right = NULL;
+    sweep_line->head.prev = NULL;
+    sweep_line->head.next = &sweep_line->tail;
+    sweep_line->tail.prev = &sweep_line->head;
+    sweep_line->tail.next = NULL;
+    sweep_line->tail.right = NULL;
+    sweep_line->tail.x = INT32_MAX;
+    sweep_line->tail.dir = 0;
+
+    sweep_line->current_y = INT32_MIN;
+    sweep_line->last_y = INT32_MIN;
+
+    sweep_line->fill_rule = fill_rule;
+    sweep_line->container = container;
+    sweep_line->do_traps = do_traps;
+}
+
+static void
+edge_end_box (sweep_line_t *sweep_line, edge_t *left, int32_t bot)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    /* Only emit (trivial) non-degenerate trapezoids with positive height. */
+    if (likely (left->top < bot)) {
+	if (sweep_line->do_traps) {
+	    cairo_line_t _left = {
+		{ left->x, left->top },
+		{ left->x, bot },
+	    }, _right = {
+		{ left->right->x, left->top },
+		{ left->right->x, bot },
+	    };
+	    _cairo_traps_add_trap (sweep_line->container, left->top, bot, &_left, &_right);
+	    status = _cairo_traps_status ((cairo_traps_t *) sweep_line->container);
+	} else {
+	    cairo_box_t box;
+
+	    box.p1.x = left->x;
+	    box.p1.y = left->top;
+	    box.p2.x = left->right->x;
+	    box.p2.y = bot;
+
+	    status = _cairo_boxes_add (sweep_line->container,
+				       CAIRO_ANTIALIAS_DEFAULT,
+				       &box);
+	}
+    }
+    if (unlikely (status))
+	longjmp (sweep_line->unwind, status);
+
+    left->right = NULL;
+}
+
+/* Start a new trapezoid at the given top y coordinate, whose edges
+ * are `edge' and `edge->next'. If `edge' already has a trapezoid,
+ * then either add it to the traps in `traps', if the trapezoid's
+ * right edge differs from `edge->next', or do nothing if the new
+ * trapezoid would be a continuation of the existing one. */
+static inline void
+edge_start_or_continue_box (sweep_line_t *sweep_line,
+			    edge_t	*left,
+			    edge_t	*right,
+			    int		 top)
+{
+    if (left->right == right)
+	return;
+
+    if (left->right != NULL) {
+	if (left->right->x == right->x) {
+	    /* continuation on right, so just swap edges */
+	    left->right = right;
+	    return;
+	}
+
+	edge_end_box (sweep_line, left, top);
+    }
+
+    if (left->x != right->x) {
+	left->top = top;
+	left->right = right;
+    }
+}
+/*
+ * Merge two sorted edge lists.
+ * Input:
+ *  - head_a: The head of the first list.
+ *  - head_b: The head of the second list; head_b cannot be NULL.
+ * Output:
+ * Returns the head of the merged list.
+ *
+ * Implementation notes:
+ * To make it fast (in particular, to reduce to an insertion sort whenever
+ * one of the two input lists only has a single element) we iterate through
+ * a list until its head becomes greater than the head of the other list,
+ * then we switch their roles. As soon as one of the two lists is empty, we
+ * just attach the other one to the current list and exit.
+ * Writes to memory are only needed to "switch" lists (as it also requires
+ * attaching to the output list the list which we will be iterating next) and
+ * to attach the last non-empty list.
+ */
+static edge_t *
+merge_sorted_edges (edge_t *head_a, edge_t *head_b)
+{
+    edge_t *head, *prev;
+    int32_t x;
+
+    prev = head_a->prev;
+    if (head_a->x <= head_b->x) {
+	head = head_a;
+    } else {
+	head_b->prev = prev;
+	head = head_b;
+	goto start_with_b;
+    }
+
+    do {
+	x = head_b->x;
+	while (head_a != NULL && head_a->x <= x) {
+	    prev = head_a;
+	    head_a = head_a->next;
+	}
+
+	head_b->prev = prev;
+	prev->next = head_b;
+	if (head_a == NULL)
+	    return head;
+
+start_with_b:
+	x = head_a->x;
+	while (head_b != NULL && head_b->x <= x) {
+	    prev = head_b;
+	    head_b = head_b->next;
+	}
+
+	head_a->prev = prev;
+	prev->next = head_a;
+	if (head_b == NULL)
+	    return head;
+    } while (1);
+}
+
+/*
+ * Sort (part of) a list.
+ * Input:
+ *  - list: The list to be sorted; list cannot be NULL.
+ *  - limit: Recursion limit.
+ * Output:
+ *  - head_out: The head of the sorted list containing the first 2^(level+1) elements of the
+ *              input list; if the input list has fewer elements, head_out be a sorted list
+ *              containing all the elements of the input list.
+ * Returns the head of the list of unprocessed elements (NULL if the sorted list contains
+ * all the elements of the input list).
+ *
+ * Implementation notes:
+ * Special case single element list, unroll/inline the sorting of the first two elements.
+ * Some tail recursion is used since we iterate on the bottom-up solution of the problem
+ * (we start with a small sorted list and keep merging other lists of the same size to it).
+ */
+static edge_t *
+sort_edges (edge_t  *list,
+	    unsigned int  level,
+	    edge_t **head_out)
+{
+    edge_t *head_other, *remaining;
+    unsigned int i;
+
+    head_other = list->next;
+
+    if (head_other == NULL) {
+	*head_out = list;
+	return NULL;
+    }
+
+    remaining = head_other->next;
+    if (list->x <= head_other->x) {
+	*head_out = list;
+	head_other->next = NULL;
+    } else {
+	*head_out = head_other;
+	head_other->prev = list->prev;
+	head_other->next = list;
+	list->prev = head_other;
+	list->next = NULL;
+    }
+
+    for (i = 0; i < level && remaining; i++) {
+	remaining = sort_edges (remaining, i, &head_other);
+	*head_out = merge_sorted_edges (*head_out, head_other);
+    }
+
+    return remaining;
+}
+
+static edge_t *
+merge_unsorted_edges (edge_t *head, edge_t *unsorted)
+{
+    sort_edges (unsorted, UINT_MAX, &unsorted);
+    return merge_sorted_edges (head, unsorted);
+}
+
+static void
+active_edges_insert (sweep_line_t *sweep)
+{
+    edge_t *prev;
+    int x;
+
+    x = sweep->insert_x;
+    prev = sweep->cursor;
+    if (prev->x > x) {
+	do {
+	    prev = prev->prev;
+	} while (prev->x > x);
+    } else {
+	while (prev->next->x < x)
+	    prev = prev->next;
+    }
+
+    prev->next = merge_unsorted_edges (prev->next, sweep->insert);
+    sweep->cursor = sweep->insert;
+    sweep->insert = NULL;
+    sweep->insert_x = INT_MAX;
+}
+
+static inline void
+active_edges_to_traps (sweep_line_t *sweep)
+{
+    int top = sweep->current_y;
+    edge_t *pos;
+
+    if (sweep->last_y == sweep->current_y)
+	return;
+
+    if (sweep->insert)
+	active_edges_insert (sweep);
+
+    pos = sweep->head.next;
+    if (pos == &sweep->tail)
+	return;
+
+    if (sweep->fill_rule == CAIRO_FILL_RULE_WINDING) {
+	do {
+	    edge_t *left, *right;
+	    int winding;
+
+	    left = pos;
+	    winding = left->dir;
+
+	    right = left->next;
+
+	    /* Check if there is a co-linear edge with an existing trap */
+	    while (right->x == left->x) {
+		if (right->right != NULL) {
+		    assert (left->right == NULL);
+		    /* continuation on left */
+		    left->top = right->top;
+		    left->right = right->right;
+		    right->right = NULL;
+		}
+		winding += right->dir;
+		right = right->next;
+	    }
+
+	    if (winding == 0) {
+		if (left->right != NULL)
+		    edge_end_box (sweep, left, top);
+		pos = right;
+		continue;
+	    }
+
+	    do {
+		/* End all subsumed traps */
+		if (unlikely (right->right != NULL))
+		    edge_end_box (sweep, right, top);
+
+		/* Greedily search for the closing edge, so that we generate
+		 * the * maximal span width with the minimal number of
+		 * boxes.
+		 */
+		winding += right->dir;
+		if (winding == 0 && right->x != right->next->x)
+		    break;
+
+		right = right->next;
+	    } while (TRUE);
+
+	    edge_start_or_continue_box (sweep, left, right, top);
+
+	    pos = right->next;
+	} while (pos != &sweep->tail);
+    } else {
+	do {
+	    edge_t *right = pos->next;
+	    int count = 0;
+
+	    do {
+		/* End all subsumed traps */
+		if (unlikely (right->right != NULL))
+		    edge_end_box (sweep, right, top);
+
+		    /* skip co-linear edges */
+		if (++count & 1 && right->x != right->next->x)
+		    break;
+
+		right = right->next;
+	    } while (TRUE);
+
+	    edge_start_or_continue_box (sweep, pos, right, top);
+
+	    pos = right->next;
+	} while (pos != &sweep->tail);
+    }
+
+    sweep->last_y = sweep->current_y;
+}
+
+static inline void
+sweep_line_delete_edge (sweep_line_t *sweep, edge_t *edge)
+{
+    if (edge->right != NULL) {
+	edge_t *next = edge->next;
+	if (next->x == edge->x) {
+	    next->top = edge->top;
+	    next->right = edge->right;
+	} else
+	    edge_end_box (sweep, edge, sweep->current_y);
+    }
+
+    if (sweep->cursor == edge)
+	sweep->cursor = edge->prev;
+
+    edge->prev->next = edge->next;
+    edge->next->prev = edge->prev;
+}
+
+static inline cairo_bool_t
+sweep_line_delete (sweep_line_t	*sweep, rectangle_t *rectangle)
+{
+    cairo_bool_t update;
+
+    update = TRUE;
+    if (sweep->fill_rule == CAIRO_FILL_RULE_WINDING &&
+	rectangle->left.prev->dir == rectangle->left.dir)
+    {
+	update = rectangle->left.next != &rectangle->right;
+    }
+
+    sweep_line_delete_edge (sweep, &rectangle->left);
+    sweep_line_delete_edge (sweep, &rectangle->right);
+
+    rectangle_pop_stop (sweep);
+    return update;
+}
+
+static inline void
+sweep_line_insert (sweep_line_t	*sweep, rectangle_t *rectangle)
+{
+    if (sweep->insert)
+	sweep->insert->prev = &rectangle->right;
+    rectangle->right.next = sweep->insert;
+    rectangle->right.prev = &rectangle->left;
+    rectangle->left.next = &rectangle->right;
+    rectangle->left.prev = NULL;
+    sweep->insert = &rectangle->left;
+    if (rectangle->left.x < sweep->insert_x)
+	sweep->insert_x = rectangle->left.x;
+
+    pqueue_push (sweep, rectangle);
+}
+
+static cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectangular (rectangle_t	**rectangles,
+					       int			  num_rectangles,
+					       cairo_fill_rule_t	  fill_rule,
+					       cairo_bool_t		 do_traps,
+					       void			*container)
+{
+    sweep_line_t sweep_line;
+    rectangle_t *rectangle;
+    cairo_status_t status;
+    cairo_bool_t update;
+
+    sweep_line_init (&sweep_line,
+		     rectangles, num_rectangles,
+		     fill_rule,
+		     do_traps, container);
+    if ((status = setjmp (sweep_line.unwind)))
+	return status;
+
+    update = FALSE;
+
+    rectangle = rectangle_pop_start (&sweep_line);
+    do {
+	if (rectangle->top != sweep_line.current_y) {
+	    rectangle_t *stop;
+
+	    stop = rectangle_peek_stop (&sweep_line);
+	    while (stop != NULL && stop->bottom < rectangle->top) {
+		if (stop->bottom != sweep_line.current_y) {
+		    if (update) {
+			active_edges_to_traps (&sweep_line);
+			update = FALSE;
+		    }
+
+		    sweep_line.current_y = stop->bottom;
+		}
+
+		update |= sweep_line_delete (&sweep_line, stop);
+		stop = rectangle_peek_stop (&sweep_line);
+	    }
+
+	    if (update) {
+		active_edges_to_traps (&sweep_line);
+		update = FALSE;
+	    }
+
+	    sweep_line.current_y = rectangle->top;
+	}
+
+	do {
+	    sweep_line_insert (&sweep_line, rectangle);
+	} while ((rectangle = rectangle_pop_start (&sweep_line)) != NULL &&
+		 sweep_line.current_y == rectangle->top);
+	update = TRUE;
+    } while (rectangle);
+
+    while ((rectangle = rectangle_peek_stop (&sweep_line)) != NULL) {
+	if (rectangle->bottom != sweep_line.current_y) {
+	    if (update) {
+		active_edges_to_traps (&sweep_line);
+		update = FALSE;
+	    }
+	    sweep_line.current_y = rectangle->bottom;
+	}
+
+	update |= sweep_line_delete (&sweep_line, rectangle);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectangular_traps (cairo_traps_t *traps,
+						     cairo_fill_rule_t fill_rule)
+{
+    rectangle_t stack_rectangles[CAIRO_STACK_ARRAY_LENGTH (rectangle_t)];
+    rectangle_t *stack_rectangles_ptrs[ARRAY_LENGTH (stack_rectangles) + 3];
+    rectangle_t *rectangles, **rectangles_ptrs;
+    cairo_status_t status;
+    int i;
+
+   assert (traps->is_rectangular);
+
+    if (unlikely (traps->num_traps <= 1)) {
+        if (traps->num_traps == 1) {
+            cairo_trapezoid_t *trap = traps->traps;
+            if (trap->left.p1.x > trap->right.p1.x) {
+                cairo_line_t tmp = trap->left;
+                trap->left = trap->right;
+                trap->right = tmp;
+            }
+        }
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    dump_traps (traps, "bo-rects-traps-in.txt");
+
+    rectangles = stack_rectangles;
+    rectangles_ptrs = stack_rectangles_ptrs;
+    if (traps->num_traps > ARRAY_LENGTH (stack_rectangles)) {
+	rectangles = _cairo_malloc_ab_plus_c (traps->num_traps,
+					      sizeof (rectangle_t) +
+					      sizeof (rectangle_t *),
+					      3*sizeof (rectangle_t *));
+	if (unlikely (rectangles == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	rectangles_ptrs = (rectangle_t **) (rectangles + traps->num_traps);
+    }
+
+    for (i = 0; i < traps->num_traps; i++) {
+	if (traps->traps[i].left.p1.x < traps->traps[i].right.p1.x) {
+	    rectangles[i].left.x = traps->traps[i].left.p1.x;
+	    rectangles[i].left.dir = 1;
+
+	    rectangles[i].right.x = traps->traps[i].right.p1.x;
+	    rectangles[i].right.dir = -1;
+	} else {
+	    rectangles[i].right.x = traps->traps[i].left.p1.x;
+	    rectangles[i].right.dir = 1;
+
+	    rectangles[i].left.x = traps->traps[i].right.p1.x;
+	    rectangles[i].left.dir = -1;
+	}
+
+	rectangles[i].left.right = NULL;
+	rectangles[i].right.right = NULL;
+
+	rectangles[i].top = traps->traps[i].top;
+	rectangles[i].bottom = traps->traps[i].bottom;
+
+	rectangles_ptrs[i+2] = &rectangles[i];
+    }
+    /* XXX incremental sort */
+    _rectangle_sort (rectangles_ptrs+2, i);
+
+    _cairo_traps_clear (traps);
+    status = _cairo_bentley_ottmann_tessellate_rectangular (rectangles_ptrs+2, i,
+							    fill_rule,
+							    TRUE, traps);
+    traps->is_rectilinear = TRUE;
+    traps->is_rectangular = TRUE;
+
+    if (rectangles != stack_rectangles)
+	free (rectangles);
+
+    dump_traps (traps, "bo-rects-traps-out.txt");
+
+    return status;
+}
+
+cairo_status_t
+_cairo_bentley_ottmann_tessellate_boxes (const cairo_boxes_t *in,
+					 cairo_fill_rule_t fill_rule,
+					 cairo_boxes_t *out)
+{
+    rectangle_t stack_rectangles[CAIRO_STACK_ARRAY_LENGTH (rectangle_t)];
+    rectangle_t *stack_rectangles_ptrs[ARRAY_LENGTH (stack_rectangles) + 3];
+    rectangle_t *rectangles, **rectangles_ptrs;
+    rectangle_t *stack_rectangles_chain[CAIRO_STACK_ARRAY_LENGTH (rectangle_t *) ];
+    rectangle_t **rectangles_chain = NULL;
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    int i, j, y_min, y_max;
+
+    if (unlikely (in->num_boxes == 0)) {
+	_cairo_boxes_clear (out);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (in->num_boxes == 1) {
+	if (in == out) {
+	    cairo_box_t *box = &in->chunks.base[0];
+
+	    if (box->p1.x > box->p2.x) {
+		cairo_fixed_t tmp = box->p1.x;
+		box->p1.x = box->p2.x;
+		box->p2.x = tmp;
+	    }
+	} else {
+	    cairo_box_t box = in->chunks.base[0];
+
+	    if (box.p1.x > box.p2.x) {
+		cairo_fixed_t tmp = box.p1.x;
+		box.p1.x = box.p2.x;
+		box.p2.x = tmp;
+	    }
+
+	    _cairo_boxes_clear (out);
+	    status = _cairo_boxes_add (out, CAIRO_ANTIALIAS_DEFAULT, &box);
+	    assert (status == CAIRO_STATUS_SUCCESS);
+	}
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    y_min = INT_MAX; y_max = INT_MIN;
+    for (chunk = &in->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    if (box[i].p1.y < y_min)
+		y_min = box[i].p1.y;
+	    if (box[i].p1.y > y_max)
+		y_max = box[i].p1.y;
+	}
+    }
+    y_min = _cairo_fixed_integer_floor (y_min);
+    y_max = _cairo_fixed_integer_floor (y_max) + 1;
+    y_max -= y_min;
+
+    if (y_max < in->num_boxes) {
+	rectangles_chain = stack_rectangles_chain;
+	if (y_max > ARRAY_LENGTH (stack_rectangles_chain)) {
+	    rectangles_chain = _cairo_malloc_ab (y_max, sizeof (rectangle_t *));
+	    if (unlikely (rectangles_chain == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+	memset (rectangles_chain, 0, y_max * sizeof (rectangle_t*));
+    }
+
+    rectangles = stack_rectangles;
+    rectangles_ptrs = stack_rectangles_ptrs;
+    if (in->num_boxes > ARRAY_LENGTH (stack_rectangles)) {
+	rectangles = _cairo_malloc_ab_plus_c (in->num_boxes,
+					      sizeof (rectangle_t) +
+					      sizeof (rectangle_t *),
+					      3*sizeof (rectangle_t *));
+	if (unlikely (rectangles == NULL)) {
+	    if (rectangles_chain != stack_rectangles_chain)
+		free (rectangles_chain);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	rectangles_ptrs = (rectangle_t **) (rectangles + in->num_boxes);
+    }
+
+    j = 0;
+    for (chunk = &in->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    int h;
+
+	    if (box[i].p1.x < box[i].p2.x) {
+		rectangles[j].left.x = box[i].p1.x;
+		rectangles[j].left.dir = 1;
+
+		rectangles[j].right.x = box[i].p2.x;
+		rectangles[j].right.dir = -1;
+	    } else {
+		rectangles[j].right.x = box[i].p1.x;
+		rectangles[j].right.dir = 1;
+
+		rectangles[j].left.x = box[i].p2.x;
+		rectangles[j].left.dir = -1;
+	    }
+
+	    rectangles[j].left.right = NULL;
+	    rectangles[j].right.right = NULL;
+
+	    rectangles[j].top = box[i].p1.y;
+	    rectangles[j].bottom = box[i].p2.y;
+
+	    if (rectangles_chain) {
+		h = _cairo_fixed_integer_floor (box[i].p1.y) - y_min;
+		rectangles[j].left.next = (edge_t *)rectangles_chain[h];
+		rectangles_chain[h] = &rectangles[j];
+	    } else {
+		rectangles_ptrs[j+2] = &rectangles[j];
+	    }
+	    j++;
+	}
+    }
+
+    if (rectangles_chain) {
+	j = 2;
+	for (y_min = 0; y_min < y_max; y_min++) {
+	    rectangle_t *r;
+	    int start = j;
+	    for (r = rectangles_chain[y_min]; r; r = (rectangle_t *)r->left.next)
+		rectangles_ptrs[j++] = r;
+	    if (j > start + 1)
+		_rectangle_sort (rectangles_ptrs + start, j - start);
+	}
+
+	if (rectangles_chain != stack_rectangles_chain)
+	    free (rectangles_chain);
+
+	j -= 2;
+    } else {
+	_rectangle_sort (rectangles_ptrs + 2, j);
+    }
+
+    _cairo_boxes_clear (out);
+    status = _cairo_bentley_ottmann_tessellate_rectangular (rectangles_ptrs+2, j,
+							    fill_rule,
+							    FALSE, out);
+    if (rectangles != stack_rectangles)
+	free (rectangles);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-bentley-ottmann-rectilinear.c b/libs/cairo-1.16.0/src/cairo-bentley-ottmann-rectilinear.c
new file mode 100644
index 0000000..7c0be69
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-bentley-ottmann-rectilinear.c
@@ -0,0 +1,600 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-combsort-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-traps-private.h"
+
+typedef struct _cairo_bo_edge cairo_bo_edge_t;
+typedef struct _cairo_bo_trap cairo_bo_trap_t;
+
+/* A deferred trapezoid of an edge */
+struct _cairo_bo_trap {
+    cairo_bo_edge_t *right;
+    int32_t top;
+};
+
+struct _cairo_bo_edge {
+    cairo_edge_t edge;
+    cairo_bo_edge_t *prev;
+    cairo_bo_edge_t *next;
+    cairo_bo_trap_t deferred_trap;
+};
+
+typedef enum {
+    CAIRO_BO_EVENT_TYPE_START,
+    CAIRO_BO_EVENT_TYPE_STOP
+} cairo_bo_event_type_t;
+
+typedef struct _cairo_bo_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+    cairo_bo_edge_t *edge;
+} cairo_bo_event_t;
+
+typedef struct _cairo_bo_sweep_line {
+    cairo_bo_event_t **events;
+    cairo_bo_edge_t *head;
+    cairo_bo_edge_t *stopped;
+    int32_t current_y;
+    cairo_bo_edge_t *current_edge;
+} cairo_bo_sweep_line_t;
+
+static inline int
+_cairo_point_compare (const cairo_point_t *a,
+		      const cairo_point_t *b)
+{
+    int cmp;
+
+    cmp = a->y - b->y;
+    if (likely (cmp))
+	return cmp;
+
+    return a->x - b->x;
+}
+
+static inline int
+_cairo_bo_edge_compare (const cairo_bo_edge_t	*a,
+			const cairo_bo_edge_t	*b)
+{
+    int cmp;
+
+    cmp = a->edge.line.p1.x - b->edge.line.p1.x;
+    if (likely (cmp))
+	return cmp;
+
+    return b->edge.bottom - a->edge.bottom;
+}
+
+static inline int
+cairo_bo_event_compare (const cairo_bo_event_t *a,
+			const cairo_bo_event_t *b)
+{
+    int cmp;
+
+    cmp = _cairo_point_compare (&a->point, &b->point);
+    if (likely (cmp))
+	return cmp;
+
+    cmp = a->type - b->type;
+    if (cmp)
+	return cmp;
+
+    return a - b;
+}
+
+static inline cairo_bo_event_t *
+_cairo_bo_event_dequeue (cairo_bo_sweep_line_t *sweep_line)
+{
+    return *sweep_line->events++;
+}
+
+CAIRO_COMBSORT_DECLARE (_cairo_bo_event_queue_sort,
+			cairo_bo_event_t *,
+			cairo_bo_event_compare)
+
+static void
+_cairo_bo_sweep_line_init (cairo_bo_sweep_line_t *sweep_line,
+			   cairo_bo_event_t	**events,
+			   int			  num_events)
+{
+    _cairo_bo_event_queue_sort (events, num_events);
+    events[num_events] = NULL;
+    sweep_line->events = events;
+
+    sweep_line->head = NULL;
+    sweep_line->current_y = INT32_MIN;
+    sweep_line->current_edge = NULL;
+}
+
+static void
+_cairo_bo_sweep_line_insert (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t		*edge)
+{
+    if (sweep_line->current_edge != NULL) {
+	cairo_bo_edge_t *prev, *next;
+	int cmp;
+
+	cmp = _cairo_bo_edge_compare (sweep_line->current_edge, edge);
+	if (cmp < 0) {
+	    prev = sweep_line->current_edge;
+	    next = prev->next;
+	    while (next != NULL && _cairo_bo_edge_compare (next, edge) < 0)
+		prev = next, next = prev->next;
+
+	    prev->next = edge;
+	    edge->prev = prev;
+	    edge->next = next;
+	    if (next != NULL)
+		next->prev = edge;
+	} else if (cmp > 0) {
+	    next = sweep_line->current_edge;
+	    prev = next->prev;
+	    while (prev != NULL && _cairo_bo_edge_compare (prev, edge) > 0)
+		next = prev, prev = next->prev;
+
+	    next->prev = edge;
+	    edge->next = next;
+	    edge->prev = prev;
+	    if (prev != NULL)
+		prev->next = edge;
+	    else
+		sweep_line->head = edge;
+	} else {
+	    prev = sweep_line->current_edge;
+	    edge->prev = prev;
+	    edge->next = prev->next;
+	    if (prev->next != NULL)
+		prev->next->prev = edge;
+	    prev->next = edge;
+	}
+    } else {
+	sweep_line->head = edge;
+    }
+
+    sweep_line->current_edge = edge;
+}
+
+static void
+_cairo_bo_sweep_line_delete (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t	*edge)
+{
+    if (edge->prev != NULL)
+	edge->prev->next = edge->next;
+    else
+	sweep_line->head = edge->next;
+
+    if (edge->next != NULL)
+	edge->next->prev = edge->prev;
+
+    if (sweep_line->current_edge == edge)
+	sweep_line->current_edge = edge->prev ? edge->prev : edge->next;
+}
+
+static inline cairo_bool_t
+edges_collinear (const cairo_bo_edge_t *a, const cairo_bo_edge_t *b)
+{
+    return a->edge.line.p1.x == b->edge.line.p1.x;
+}
+
+static cairo_status_t
+_cairo_bo_edge_end_trap (cairo_bo_edge_t	*left,
+			 int32_t		 bot,
+			 cairo_bool_t		 do_traps,
+			 void			*container)
+{
+    cairo_bo_trap_t *trap = &left->deferred_trap;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    /* Only emit (trivial) non-degenerate trapezoids with positive height. */
+    if (likely (trap->top < bot)) {
+	if (do_traps) {
+	    _cairo_traps_add_trap (container,
+				   trap->top, bot,
+				   &left->edge.line, &trap->right->edge.line);
+	    status =  _cairo_traps_status ((cairo_traps_t *) container);
+	} else {
+	    cairo_box_t box;
+
+	    box.p1.x = left->edge.line.p1.x;
+	    box.p1.y = trap->top;
+	    box.p2.x = trap->right->edge.line.p1.x;
+	    box.p2.y = bot;
+	    status = _cairo_boxes_add (container, CAIRO_ANTIALIAS_DEFAULT, &box);
+	}
+    }
+
+    trap->right = NULL;
+
+    return status;
+}
+
+/* Start a new trapezoid at the given top y coordinate, whose edges
+ * are `edge' and `edge->next'. If `edge' already has a trapezoid,
+ * then either add it to the traps in `traps', if the trapezoid's
+ * right edge differs from `edge->next', or do nothing if the new
+ * trapezoid would be a continuation of the existing one. */
+static inline cairo_status_t
+_cairo_bo_edge_start_or_continue_trap (cairo_bo_edge_t	*left,
+				       cairo_bo_edge_t  *right,
+				       int               top,
+				       cairo_bool_t	 do_traps,
+				       void		*container)
+{
+    cairo_status_t status;
+
+    if (left->deferred_trap.right == right)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (left->deferred_trap.right != NULL) {
+	if (right != NULL && edges_collinear (left->deferred_trap.right, right))
+	{
+	    /* continuation on right, so just swap edges */
+	    left->deferred_trap.right = right;
+	    return CAIRO_STATUS_SUCCESS;
+	}
+
+	status = _cairo_bo_edge_end_trap (left, top, do_traps, container);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (right != NULL && ! edges_collinear (left, right)) {
+	left->deferred_trap.top = top;
+	left->deferred_trap.right = right;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline cairo_status_t
+_active_edges_to_traps (cairo_bo_edge_t		*left,
+			int32_t			 top,
+			cairo_fill_rule_t	 fill_rule,
+			cairo_bool_t		 do_traps,
+			void			*container)
+{
+    cairo_bo_edge_t *right;
+    cairo_status_t status;
+
+    if (fill_rule == CAIRO_FILL_RULE_WINDING) {
+	while (left != NULL) {
+	    int in_out;
+
+	    /* Greedily search for the closing edge, so that we generate the
+	     * maximal span width with the minimal number of trapezoids.
+	     */
+	    in_out = left->edge.dir;
+
+	    /* Check if there is a co-linear edge with an existing trap */
+	    right = left->next;
+	    if (left->deferred_trap.right == NULL) {
+		while (right != NULL && right->deferred_trap.right == NULL)
+		    right = right->next;
+
+		if (right != NULL && edges_collinear (left, right)) {
+		    /* continuation on left */
+		    left->deferred_trap = right->deferred_trap;
+		    right->deferred_trap.right = NULL;
+		}
+	    }
+
+	    /* End all subsumed traps */
+	    right = left->next;
+	    while (right != NULL) {
+		if (right->deferred_trap.right != NULL) {
+		    status = _cairo_bo_edge_end_trap (right, top, do_traps, container);
+		    if (unlikely (status))
+			return status;
+		}
+
+		in_out += right->edge.dir;
+		if (in_out == 0) {
+		    /* skip co-linear edges */
+		    if (right->next == NULL ||
+			! edges_collinear (right, right->next))
+		    {
+			break;
+		    }
+		}
+
+		right = right->next;
+	    }
+
+	    status = _cairo_bo_edge_start_or_continue_trap (left, right, top,
+							    do_traps, container);
+	    if (unlikely (status))
+		return status;
+
+	    left = right;
+	    if (left != NULL)
+		left = left->next;
+	}
+    } else {
+	while (left != NULL) {
+	    int in_out = 0;
+
+	    right = left->next;
+	    while (right != NULL) {
+		if (right->deferred_trap.right != NULL) {
+		    status = _cairo_bo_edge_end_trap (right, top, do_traps, container);
+		    if (unlikely (status))
+			return status;
+		}
+
+		if ((in_out++ & 1) == 0) {
+		    cairo_bo_edge_t *next;
+		    cairo_bool_t skip = FALSE;
+
+		    /* skip co-linear edges */
+		    next = right->next;
+		    if (next != NULL)
+			skip = edges_collinear (right, next);
+
+		    if (! skip)
+			break;
+		}
+
+		right = right->next;
+	    }
+
+	    status = _cairo_bo_edge_start_or_continue_trap (left, right, top,
+							    do_traps, container);
+	    if (unlikely (status))
+		return status;
+
+	    left = right;
+	    if (left != NULL)
+		left = left->next;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectilinear (cairo_bo_event_t   **start_events,
+					       int			 num_events,
+					       cairo_fill_rule_t	 fill_rule,
+					       cairo_bool_t		 do_traps,
+					       void			*container)
+{
+    cairo_bo_sweep_line_t sweep_line;
+    cairo_bo_event_t *event;
+    cairo_status_t status;
+
+    _cairo_bo_sweep_line_init (&sweep_line, start_events, num_events);
+
+    while ((event = _cairo_bo_event_dequeue (&sweep_line))) {
+	if (event->point.y != sweep_line.current_y) {
+	    status = _active_edges_to_traps (sweep_line.head,
+					     sweep_line.current_y,
+					     fill_rule, do_traps, container);
+	    if (unlikely (status))
+		return status;
+
+	    sweep_line.current_y = event->point.y;
+	}
+
+	switch (event->type) {
+	case CAIRO_BO_EVENT_TYPE_START:
+	    _cairo_bo_sweep_line_insert (&sweep_line, event->edge);
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_STOP:
+	    _cairo_bo_sweep_line_delete (&sweep_line, event->edge);
+
+	    if (event->edge->deferred_trap.right != NULL) {
+		status = _cairo_bo_edge_end_trap (event->edge,
+						  sweep_line.current_y,
+						  do_traps, container);
+		if (unlikely (status))
+		    return status;
+	    }
+
+	    break;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes (const cairo_polygon_t *polygon,
+								cairo_fill_rule_t	  fill_rule,
+								cairo_boxes_t *boxes)
+{
+    cairo_status_t status;
+    cairo_bo_event_t stack_events[CAIRO_STACK_ARRAY_LENGTH (cairo_bo_event_t)];
+    cairo_bo_event_t *events;
+    cairo_bo_event_t *stack_event_ptrs[ARRAY_LENGTH (stack_events) + 1];
+    cairo_bo_event_t **event_ptrs;
+    cairo_bo_edge_t stack_edges[ARRAY_LENGTH (stack_events)];
+    cairo_bo_edge_t *edges;
+    int num_events;
+    int i, j;
+
+    if (unlikely (polygon->num_edges == 0))
+	return CAIRO_STATUS_SUCCESS;
+
+    num_events = 2 * polygon->num_edges;
+
+    events = stack_events;
+    event_ptrs = stack_event_ptrs;
+    edges = stack_edges;
+    if (num_events > ARRAY_LENGTH (stack_events)) {
+	events = _cairo_malloc_ab_plus_c (num_events,
+					  sizeof (cairo_bo_event_t) +
+					  sizeof (cairo_bo_edge_t) +
+					  sizeof (cairo_bo_event_t *),
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (events == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	event_ptrs = (cairo_bo_event_t **) (events + num_events);
+	edges = (cairo_bo_edge_t *) (event_ptrs + num_events + 1);
+    }
+
+    for (i = j = 0; i < polygon->num_edges; i++) {
+	edges[i].edge = polygon->edges[i];
+	edges[i].deferred_trap.right = NULL;
+	edges[i].prev = NULL;
+	edges[i].next = NULL;
+
+	event_ptrs[j] = &events[j];
+	events[j].type = CAIRO_BO_EVENT_TYPE_START;
+	events[j].point.y = polygon->edges[i].top;
+	events[j].point.x = polygon->edges[i].line.p1.x;
+	events[j].edge = &edges[i];
+	j++;
+
+	event_ptrs[j] = &events[j];
+	events[j].type = CAIRO_BO_EVENT_TYPE_STOP;
+	events[j].point.y = polygon->edges[i].bottom;
+	events[j].point.x = polygon->edges[i].line.p1.x;
+	events[j].edge = &edges[i];
+	j++;
+    }
+
+    status = _cairo_bentley_ottmann_tessellate_rectilinear (event_ptrs, j,
+							    fill_rule,
+							    FALSE, boxes);
+    if (events != stack_events)
+	free (events);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectilinear_traps (cairo_traps_t *traps,
+						     cairo_fill_rule_t fill_rule)
+{
+    cairo_bo_event_t stack_events[CAIRO_STACK_ARRAY_LENGTH (cairo_bo_event_t)];
+    cairo_bo_event_t *events;
+    cairo_bo_event_t *stack_event_ptrs[ARRAY_LENGTH (stack_events) + 1];
+    cairo_bo_event_t **event_ptrs;
+    cairo_bo_edge_t stack_edges[ARRAY_LENGTH (stack_events)];
+    cairo_bo_edge_t *edges;
+    cairo_status_t status;
+    int i, j, k;
+
+    if (unlikely (traps->num_traps == 0))
+	return CAIRO_STATUS_SUCCESS;
+
+    assert (traps->is_rectilinear);
+
+    i = 4 * traps->num_traps;
+
+    events = stack_events;
+    event_ptrs = stack_event_ptrs;
+    edges = stack_edges;
+    if (i > ARRAY_LENGTH (stack_events)) {
+	events = _cairo_malloc_ab_plus_c (i,
+					  sizeof (cairo_bo_event_t) +
+					  sizeof (cairo_bo_edge_t) +
+					  sizeof (cairo_bo_event_t *),
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (events == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	event_ptrs = (cairo_bo_event_t **) (events + i);
+	edges = (cairo_bo_edge_t *) (event_ptrs + i + 1);
+    }
+
+    for (i = j = k = 0; i < traps->num_traps; i++) {
+	edges[k].edge.top = traps->traps[i].top;
+	edges[k].edge.bottom = traps->traps[i].bottom;
+	edges[k].edge.line = traps->traps[i].left;
+	edges[k].edge.dir = 1;
+	edges[k].deferred_trap.right = NULL;
+	edges[k].prev = NULL;
+	edges[k].next = NULL;
+
+	event_ptrs[j] = &events[j];
+	events[j].type = CAIRO_BO_EVENT_TYPE_START;
+	events[j].point.y = traps->traps[i].top;
+	events[j].point.x = traps->traps[i].left.p1.x;
+	events[j].edge = &edges[k];
+	j++;
+
+	event_ptrs[j] = &events[j];
+	events[j].type = CAIRO_BO_EVENT_TYPE_STOP;
+	events[j].point.y = traps->traps[i].bottom;
+	events[j].point.x = traps->traps[i].left.p1.x;
+	events[j].edge = &edges[k];
+	j++;
+	k++;
+
+	edges[k].edge.top = traps->traps[i].top;
+	edges[k].edge.bottom = traps->traps[i].bottom;
+	edges[k].edge.line = traps->traps[i].right;
+	edges[k].edge.dir = -1;
+	edges[k].deferred_trap.right = NULL;
+	edges[k].prev = NULL;
+	edges[k].next = NULL;
+
+	event_ptrs[j] = &events[j];
+	events[j].type = CAIRO_BO_EVENT_TYPE_START;
+	events[j].point.y = traps->traps[i].top;
+	events[j].point.x = traps->traps[i].right.p1.x;
+	events[j].edge = &edges[k];
+	j++;
+
+	event_ptrs[j] = &events[j];
+	events[j].type = CAIRO_BO_EVENT_TYPE_STOP;
+	events[j].point.y = traps->traps[i].bottom;
+	events[j].point.x = traps->traps[i].right.p1.x;
+	events[j].edge = &edges[k];
+	j++;
+	k++;
+    }
+
+    _cairo_traps_clear (traps);
+    status = _cairo_bentley_ottmann_tessellate_rectilinear (event_ptrs, j,
+							    fill_rule,
+							    TRUE, traps);
+    traps->is_rectilinear = TRUE;
+
+    if (events != stack_events)
+	free (events);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-bentley-ottmann.c b/libs/cairo-1.16.0/src/cairo-bentley-ottmann.c
new file mode 100644
index 0000000..2011e73
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-bentley-ottmann.c
@@ -0,0 +1,1915 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-combsort-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-line-inline.h"
+#include "cairo-traps-private.h"
+
+#define DEBUG_PRINT_STATE 0
+#define DEBUG_EVENTS 0
+#define DEBUG_TRAPS 0
+
+typedef cairo_point_t cairo_bo_point32_t;
+
+typedef struct _cairo_bo_intersect_ordinate {
+    int32_t ordinate;
+    enum { EXACT, INEXACT } exactness;
+} cairo_bo_intersect_ordinate_t;
+
+typedef struct _cairo_bo_intersect_point {
+    cairo_bo_intersect_ordinate_t x;
+    cairo_bo_intersect_ordinate_t y;
+} cairo_bo_intersect_point_t;
+
+typedef struct _cairo_bo_edge cairo_bo_edge_t;
+typedef struct _cairo_bo_trap cairo_bo_trap_t;
+
+/* A deferred trapezoid of an edge */
+struct _cairo_bo_trap {
+    cairo_bo_edge_t *right;
+    int32_t top;
+};
+
+struct _cairo_bo_edge {
+    cairo_edge_t edge;
+    cairo_bo_edge_t *prev;
+    cairo_bo_edge_t *next;
+    cairo_bo_edge_t *colinear;
+    cairo_bo_trap_t deferred_trap;
+};
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef enum {
+    CAIRO_BO_EVENT_TYPE_STOP,
+    CAIRO_BO_EVENT_TYPE_INTERSECTION,
+    CAIRO_BO_EVENT_TYPE_START
+} cairo_bo_event_type_t;
+
+typedef struct _cairo_bo_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+} cairo_bo_event_t;
+
+typedef struct _cairo_bo_start_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+    cairo_bo_edge_t edge;
+} cairo_bo_start_event_t;
+
+typedef struct _cairo_bo_queue_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+    cairo_bo_edge_t *e1;
+    cairo_bo_edge_t *e2;
+} cairo_bo_queue_event_t;
+
+typedef struct _pqueue {
+    int size, max_size;
+
+    cairo_bo_event_t **elements;
+    cairo_bo_event_t *elements_embedded[1024];
+} pqueue_t;
+
+typedef struct _cairo_bo_event_queue {
+    cairo_freepool_t pool;
+    pqueue_t pqueue;
+    cairo_bo_event_t **start_events;
+} cairo_bo_event_queue_t;
+
+typedef struct _cairo_bo_sweep_line {
+    cairo_bo_edge_t *head;
+    cairo_bo_edge_t *stopped;
+    int32_t current_y;
+    cairo_bo_edge_t *current_edge;
+} cairo_bo_sweep_line_t;
+
+#if DEBUG_TRAPS
+static void
+dump_traps (cairo_traps_t *traps, const char *filename)
+{
+    FILE *file;
+    cairo_box_t extents;
+    int n;
+
+    if (getenv ("CAIRO_DEBUG_TRAPS") == NULL)
+	return;
+
+#if 0
+    if (traps->has_limits) {
+	printf ("%s: limits=(%d, %d, %d, %d)\n",
+		filename,
+		traps->limits.p1.x, traps->limits.p1.y,
+		traps->limits.p2.x, traps->limits.p2.y);
+    }
+#endif
+    _cairo_traps_extents (traps, &extents);
+    printf ("%s: extents=(%d, %d, %d, %d)\n",
+	    filename,
+	    extents.p1.x, extents.p1.y,
+	    extents.p2.x, extents.p2.y);
+
+    file = fopen (filename, "a");
+    if (file != NULL) {
+	for (n = 0; n < traps->num_traps; n++) {
+	    fprintf (file, "%d %d L:(%d, %d), (%d, %d) R:(%d, %d), (%d, %d)\n",
+		     traps->traps[n].top,
+		     traps->traps[n].bottom,
+		     traps->traps[n].left.p1.x,
+		     traps->traps[n].left.p1.y,
+		     traps->traps[n].left.p2.x,
+		     traps->traps[n].left.p2.y,
+		     traps->traps[n].right.p1.x,
+		     traps->traps[n].right.p1.y,
+		     traps->traps[n].right.p2.x,
+		     traps->traps[n].right.p2.y);
+	}
+	fprintf (file, "\n");
+	fclose (file);
+    }
+}
+
+static void
+dump_edges (cairo_bo_start_event_t *events,
+	    int num_edges,
+	    const char *filename)
+{
+    FILE *file;
+    int n;
+
+    if (getenv ("CAIRO_DEBUG_TRAPS") == NULL)
+	return;
+
+    file = fopen (filename, "a");
+    if (file != NULL) {
+	for (n = 0; n < num_edges; n++) {
+	    fprintf (file, "(%d, %d), (%d, %d) %d %d %d\n",
+		     events[n].edge.edge.line.p1.x,
+		     events[n].edge.edge.line.p1.y,
+		     events[n].edge.edge.line.p2.x,
+		     events[n].edge.edge.line.p2.y,
+		     events[n].edge.edge.top,
+		     events[n].edge.edge.bottom,
+		     events[n].edge.edge.dir);
+	}
+	fprintf (file, "\n");
+	fclose (file);
+    }
+}
+#endif
+
+static cairo_fixed_t
+_line_compute_intersection_x_for_y (const cairo_line_t *line,
+				    cairo_fixed_t y)
+{
+    cairo_fixed_t x, dy;
+
+    if (y == line->p1.y)
+	return line->p1.x;
+    if (y == line->p2.y)
+	return line->p2.x;
+
+    x = line->p1.x;
+    dy = line->p2.y - line->p1.y;
+    if (dy != 0) {
+	x += _cairo_fixed_mul_div_floor (y - line->p1.y,
+					 line->p2.x - line->p1.x,
+					 dy);
+    }
+
+    return x;
+}
+
+static inline int
+_cairo_bo_point32_compare (cairo_bo_point32_t const *a,
+			   cairo_bo_point32_t const *b)
+{
+    int cmp;
+
+    cmp = a->y - b->y;
+    if (cmp)
+	return cmp;
+
+    return a->x - b->x;
+}
+
+/* Compare the slope of a to the slope of b, returning 1, 0, -1 if the
+ * slope a is respectively greater than, equal to, or less than the
+ * slope of b.
+ *
+ * For each edge, consider the direction vector formed from:
+ *
+ *	top -> bottom
+ *
+ * which is:
+ *
+ *	(dx, dy) = (line.p2.x - line.p1.x, line.p2.y - line.p1.y)
+ *
+ * We then define the slope of each edge as dx/dy, (which is the
+ * inverse of the slope typically used in math instruction). We never
+ * compute a slope directly as the value approaches infinity, but we
+ * can derive a slope comparison without division as follows, (where
+ * the ? represents our compare operator).
+ *
+ * 1.	   slope(a) ? slope(b)
+ * 2.	    adx/ady ? bdx/bdy
+ * 3.	(adx * bdy) ? (bdx * ady)
+ *
+ * Note that from step 2 to step 3 there is no change needed in the
+ * sign of the result since both ady and bdy are guaranteed to be
+ * greater than or equal to 0.
+ *
+ * When using this slope comparison to sort edges, some care is needed
+ * when interpreting the results. Since the slope compare operates on
+ * distance vectors from top to bottom it gives a correct left to
+ * right sort for edges that have a common top point, (such as two
+ * edges with start events at the same location). On the other hand,
+ * the sense of the result will be exactly reversed for two edges that
+ * have a common stop point.
+ */
+static inline int
+_slope_compare (const cairo_bo_edge_t *a,
+		const cairo_bo_edge_t *b)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    int32_t bdx = b->edge.line.p2.x - b->edge.line.p1.x;
+
+    /* Since the dy's are all positive by construction we can fast
+     * path several common cases.
+     */
+
+    /* First check for vertical lines. */
+    if (adx == 0)
+	return -bdx;
+    if (bdx == 0)
+	return adx;
+
+    /* Then where the two edges point in different directions wrt x. */
+    if ((adx ^ bdx) < 0)
+	return adx;
+
+    /* Finally we actually need to do the general comparison. */
+    {
+	int32_t ady = a->edge.line.p2.y - a->edge.line.p1.y;
+	int32_t bdy = b->edge.line.p2.y - b->edge.line.p1.y;
+	cairo_int64_t adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	cairo_int64_t bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	return _cairo_int64_cmp (adx_bdy, bdx_ady);
+    }
+}
+
+
+/*
+ * We need to compare the x-coordinate of a line for a particular y wrt to a
+ * given x, without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ X
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy (and (Y - A_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   (Y - A_y) * A_dx ∘ (X - A_x) * A_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 64 bit arithmetic.
+ *
+ * See the similar discussion for _slope_compare() and
+ * edges_compare_x_for_y_general().
+ */
+static int
+edge_compare_for_y_against_x (const cairo_bo_edge_t *a,
+			      int32_t y,
+			      int32_t x)
+{
+    int32_t adx, ady;
+    int32_t dx, dy;
+    cairo_int64_t L, R;
+
+    if (x < a->edge.line.p1.x && x < a->edge.line.p2.x)
+	return 1;
+    if (x > a->edge.line.p1.x && x > a->edge.line.p2.x)
+	return -1;
+
+    adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    dx = x - a->edge.line.p1.x;
+
+    if (adx == 0)
+	return -dx;
+    if (dx == 0 || (adx ^ dx) < 0)
+	return adx;
+
+    dy = y - a->edge.line.p1.y;
+    ady = a->edge.line.p2.y - a->edge.line.p1.y;
+
+    L = _cairo_int32x32_64_mul (dy, adx);
+    R = _cairo_int32x32_64_mul (dx, ady);
+
+    return _cairo_int64_cmp (L, R);
+}
+
+static inline int
+_cairo_bo_sweep_line_compare_edges (const cairo_bo_sweep_line_t	*sweep_line,
+				    const cairo_bo_edge_t	*a,
+				    const cairo_bo_edge_t	*b)
+{
+    int cmp;
+
+    cmp = cairo_lines_compare_at_y (&a->edge.line,
+				    &b->edge.line,
+				    sweep_line->current_y);
+    if (cmp)
+	    return cmp;
+
+    /* We've got two collinear edges now. */
+    return b->edge.bottom - a->edge.bottom;
+}
+
+static inline cairo_int64_t
+det32_64 (int32_t a, int32_t b,
+	  int32_t c, int32_t d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int64_sub (_cairo_int32x32_64_mul (a, d),
+			     _cairo_int32x32_64_mul (b, c));
+}
+
+static inline cairo_int128_t
+det64x32_128 (cairo_int64_t a, int32_t       b,
+	      cairo_int64_t c, int32_t       d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int128_sub (_cairo_int64x32_128_mul (a, d),
+			      _cairo_int64x32_128_mul (c, b));
+}
+
+/* Compute the intersection of two lines as defined by two edges. The
+ * result is provided as a coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection or
+ * %CAIRO_BO_STATUS_PARALLEL if the two lines are exactly parallel.
+ */
+static cairo_bool_t
+intersect_lines (cairo_bo_edge_t		*a,
+		 cairo_bo_edge_t		*b,
+		 cairo_bo_intersect_point_t	*intersection)
+{
+    cairo_int64_t a_det, b_det;
+
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm begins.
+     * What we're doing to mitigate this is to perform clamping in
+     * cairo_bo_tessellate_polygon().
+     */
+    int32_t dx1 = a->edge.line.p1.x - a->edge.line.p2.x;
+    int32_t dy1 = a->edge.line.p1.y - a->edge.line.p2.y;
+
+    int32_t dx2 = b->edge.line.p1.x - b->edge.line.p2.x;
+    int32_t dy2 = b->edge.line.p1.y - b->edge.line.p2.y;
+
+    cairo_int64_t den_det;
+    cairo_int64_t R;
+    cairo_quorem64_t qr;
+
+    den_det = det32_64 (dx1, dy1, dx2, dy2);
+
+     /* Q: Can we determine that the lines do not intersect (within range)
+      * much more cheaply than computing the intersection point i.e. by
+      * avoiding the division?
+      *
+      *   X = ax + t * adx = bx + s * bdx;
+      *   Y = ay + t * ady = by + s * bdy;
+      *   ∴ t * (ady*bdx - bdy*adx) = bdx * (by - ay) + bdy * (ax - bx)
+      *   => t * L = R
+      *
+      * Therefore we can reject any intersection (under the criteria for
+      * valid intersection events) if:
+      *   L^R < 0 => t < 0, or
+      *   L<R => t > 1
+      *
+      * (where top/bottom must at least extend to the line endpoints).
+      *
+      * A similar substitution can be performed for s, yielding:
+      *   s * (ady*bdx - bdy*adx) = ady * (ax - bx) - adx * (ay - by)
+      */
+    R = det32_64 (dx2, dy2,
+		  b->edge.line.p1.x - a->edge.line.p1.x,
+		  b->edge.line.p1.y - a->edge.line.p1.y);
+    if (_cairo_int64_negative (den_det)) {
+	if (_cairo_int64_ge (den_det, R))
+	    return FALSE;
+    } else {
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+    }
+
+    R = det32_64 (dy1, dx1,
+		  a->edge.line.p1.y - b->edge.line.p1.y,
+		  a->edge.line.p1.x - b->edge.line.p1.x);
+    if (_cairo_int64_negative (den_det)) {
+	if (_cairo_int64_ge (den_det, R))
+	    return FALSE;
+    } else {
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+    }
+
+    /* We now know that the two lines should intersect within range. */
+
+    a_det = det32_64 (a->edge.line.p1.x, a->edge.line.p1.y,
+		      a->edge.line.p2.x, a->edge.line.p2.y);
+    b_det = det32_64 (b->edge.line.p1.x, b->edge.line.p1.y,
+		      b->edge.line.p2.x, b->edge.line.p2.y);
+
+    /* x = det (a_det, dx1, b_det, dx2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dx1,
+						       b_det, dx2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+#if 0
+    intersection->x.exactness = _cairo_int64_is_zero (qr.rem) ? EXACT : INEXACT;
+#else
+    intersection->x.exactness = EXACT;
+    if (! _cairo_int64_is_zero (qr.rem)) {
+	if (_cairo_int64_negative (den_det) ^ _cairo_int64_negative (qr.rem))
+	    qr.rem = _cairo_int64_negate (qr.rem);
+	qr.rem = _cairo_int64_mul (qr.rem, _cairo_int32_to_int64 (2));
+	if (_cairo_int64_ge (qr.rem, den_det)) {
+	    qr.quo = _cairo_int64_add (qr.quo,
+				       _cairo_int32_to_int64 (_cairo_int64_negative (qr.quo) ? -1 : 1));
+	} else
+	    intersection->x.exactness = INEXACT;
+    }
+#endif
+    intersection->x.ordinate = _cairo_int64_to_int32 (qr.quo);
+
+    /* y = det (a_det, dy1, b_det, dy2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dy1,
+						       b_det, dy2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+#if 0
+    intersection->y.exactness = _cairo_int64_is_zero (qr.rem) ? EXACT : INEXACT;
+#else
+    intersection->y.exactness = EXACT;
+    if (! _cairo_int64_is_zero (qr.rem)) {
+	if (_cairo_int64_negative (den_det) ^ _cairo_int64_negative (qr.rem))
+	    qr.rem = _cairo_int64_negate (qr.rem);
+	qr.rem = _cairo_int64_mul (qr.rem, _cairo_int32_to_int64 (2));
+	if (_cairo_int64_ge (qr.rem, den_det)) {
+	    qr.quo = _cairo_int64_add (qr.quo,
+				       _cairo_int32_to_int64 (_cairo_int64_negative (qr.quo) ? -1 : 1));
+	} else
+	    intersection->y.exactness = INEXACT;
+    }
+#endif
+    intersection->y.ordinate = _cairo_int64_to_int32 (qr.quo);
+
+    return TRUE;
+}
+
+static int
+_cairo_bo_intersect_ordinate_32_compare (cairo_bo_intersect_ordinate_t	a,
+					 int32_t			b)
+{
+    /* First compare the quotient */
+    if (a.ordinate > b)
+	return +1;
+    if (a.ordinate < b)
+	return -1;
+    /* With quotient identical, if remainder is 0 then compare equal */
+    /* Otherwise, the non-zero remainder makes a > b */
+    return INEXACT == a.exactness;
+}
+
+/* Does the given edge contain the given point. The point must already
+ * be known to be contained within the line determined by the edge,
+ * (most likely the point results from an intersection of this edge
+ * with another).
+ *
+ * If we had exact arithmetic, then this function would simply be a
+ * matter of examining whether the y value of the point lies within
+ * the range of y values of the edge. But since intersection points
+ * are not exact due to being rounded to the nearest integer within
+ * the available precision, we must also examine the x value of the
+ * point.
+ *
+ * The definition of "contains" here is that the given intersection
+ * point will be seen by the sweep line after the start event for the
+ * given edge and before the stop event for the edge. See the comments
+ * in the implementation for more details.
+ */
+static cairo_bool_t
+_cairo_bo_edge_contains_intersect_point (cairo_bo_edge_t		*edge,
+					 cairo_bo_intersect_point_t	*point)
+{
+    int cmp_top, cmp_bottom;
+
+    /* XXX: When running the actual algorithm, we don't actually need to
+     * compare against edge->top at all here, since any intersection above
+     * top is eliminated early via a slope comparison. We're leaving these
+     * here for now only for the sake of the quadratic-time intersection
+     * finder which needs them.
+     */
+
+    cmp_top = _cairo_bo_intersect_ordinate_32_compare (point->y,
+						       edge->edge.top);
+    cmp_bottom = _cairo_bo_intersect_ordinate_32_compare (point->y,
+							  edge->edge.bottom);
+
+    if (cmp_top < 0 || cmp_bottom > 0)
+    {
+	return FALSE;
+    }
+
+    if (cmp_top > 0 && cmp_bottom < 0)
+    {
+	return TRUE;
+    }
+
+    /* At this stage, the point lies on the same y value as either
+     * edge->top or edge->bottom, so we have to examine the x value in
+     * order to properly determine containment. */
+
+    /* If the y value of the point is the same as the y value of the
+     * top of the edge, then the x value of the point must be greater
+     * to be considered as inside the edge. Similarly, if the y value
+     * of the point is the same as the y value of the bottom of the
+     * edge, then the x value of the point must be less to be
+     * considered as inside. */
+
+    if (cmp_top == 0) {
+	cairo_fixed_t top_x;
+
+	top_x = _line_compute_intersection_x_for_y (&edge->edge.line,
+						    edge->edge.top);
+	return _cairo_bo_intersect_ordinate_32_compare (point->x, top_x) > 0;
+    } else { /* cmp_bottom == 0 */
+	cairo_fixed_t bot_x;
+
+	bot_x = _line_compute_intersection_x_for_y (&edge->edge.line,
+						    edge->edge.bottom);
+	return _cairo_bo_intersect_ordinate_32_compare (point->x, bot_x) < 0;
+    }
+}
+
+/* Compute the intersection of two edges. The result is provided as a
+ * coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection
+ * that is within both edges, %CAIRO_BO_STATUS_NO_INTERSECTION if the
+ * intersection of the lines defined by the edges occurs outside of
+ * one or both edges, and %CAIRO_BO_STATUS_PARALLEL if the two edges
+ * are exactly parallel.
+ *
+ * Note that when determining if a candidate intersection is "inside"
+ * an edge, we consider both the infinitesimal shortening and the
+ * infinitesimal tilt rules described by John Hobby. Specifically, if
+ * the intersection is exactly the same as an edge point, it is
+ * effectively outside (no intersection is returned). Also, if the
+ * intersection point has the same
+ */
+static cairo_bool_t
+_cairo_bo_edge_intersect (cairo_bo_edge_t	*a,
+			  cairo_bo_edge_t	*b,
+			  cairo_bo_point32_t	*intersection)
+{
+    cairo_bo_intersect_point_t quorem;
+
+    if (! intersect_lines (a, b, &quorem))
+	return FALSE;
+
+    if (! _cairo_bo_edge_contains_intersect_point (a, &quorem))
+	return FALSE;
+
+    if (! _cairo_bo_edge_contains_intersect_point (b, &quorem))
+	return FALSE;
+
+    /* Now that we've correctly compared the intersection point and
+     * determined that it lies within the edge, then we know that we
+     * no longer need any more bits of storage for the intersection
+     * than we do for our edge coordinates. We also no longer need the
+     * remainder from the division. */
+    intersection->x = quorem.x.ordinate;
+    intersection->y = quorem.y.ordinate;
+
+    return TRUE;
+}
+
+static inline int
+cairo_bo_event_compare (const cairo_bo_event_t *a,
+			const cairo_bo_event_t *b)
+{
+    int cmp;
+
+    cmp = _cairo_bo_point32_compare (&a->point, &b->point);
+    if (cmp)
+	return cmp;
+
+    cmp = a->type - b->type;
+    if (cmp)
+	return cmp;
+
+    return a - b;
+}
+
+static inline void
+_pqueue_init (pqueue_t *pq)
+{
+    pq->max_size = ARRAY_LENGTH (pq->elements_embedded);
+    pq->size = 0;
+
+    pq->elements = pq->elements_embedded;
+}
+
+static inline void
+_pqueue_fini (pqueue_t *pq)
+{
+    if (pq->elements != pq->elements_embedded)
+	free (pq->elements);
+}
+
+static cairo_status_t
+_pqueue_grow (pqueue_t *pq)
+{
+    cairo_bo_event_t **new_elements;
+    pq->max_size *= 2;
+
+    if (pq->elements == pq->elements_embedded) {
+	new_elements = _cairo_malloc_ab (pq->max_size,
+					 sizeof (cairo_bo_event_t *));
+	if (unlikely (new_elements == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	memcpy (new_elements, pq->elements_embedded,
+		sizeof (pq->elements_embedded));
+    } else {
+	new_elements = _cairo_realloc_ab (pq->elements,
+					  pq->max_size,
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (new_elements == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pq->elements = new_elements;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline cairo_status_t
+_pqueue_push (pqueue_t *pq, cairo_bo_event_t *event)
+{
+    cairo_bo_event_t **elements;
+    int i, parent;
+
+    if (unlikely (pq->size + 1 == pq->max_size)) {
+	cairo_status_t status;
+
+	status = _pqueue_grow (pq);
+	if (unlikely (status))
+	    return status;
+    }
+
+    elements = pq->elements;
+
+    for (i = ++pq->size;
+	 i != PQ_FIRST_ENTRY &&
+	 cairo_bo_event_compare (event,
+				 elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = event;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline void
+_pqueue_pop (pqueue_t *pq)
+{
+    cairo_bo_event_t **elements = pq->elements;
+    cairo_bo_event_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    cairo_bo_event_compare (elements[child+1],
+				    elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (cairo_bo_event_compare (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline cairo_status_t
+_cairo_bo_event_queue_insert (cairo_bo_event_queue_t	*queue,
+			      cairo_bo_event_type_t	 type,
+			      cairo_bo_edge_t		*e1,
+			      cairo_bo_edge_t		*e2,
+			      const cairo_point_t	 *point)
+{
+    cairo_bo_queue_event_t *event;
+
+    event = _cairo_freepool_alloc (&queue->pool);
+    if (unlikely (event == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    event->type = type;
+    event->e1 = e1;
+    event->e2 = e2;
+    event->point = *point;
+
+    return _pqueue_push (&queue->pqueue, (cairo_bo_event_t *) event);
+}
+
+static void
+_cairo_bo_event_queue_delete (cairo_bo_event_queue_t *queue,
+			      cairo_bo_event_t	     *event)
+{
+    _cairo_freepool_free (&queue->pool, event);
+}
+
+static cairo_bo_event_t *
+_cairo_bo_event_dequeue (cairo_bo_event_queue_t *event_queue)
+{
+    cairo_bo_event_t *event, *cmp;
+
+    event = event_queue->pqueue.elements[PQ_FIRST_ENTRY];
+    cmp = *event_queue->start_events;
+    if (event == NULL ||
+	(cmp != NULL && cairo_bo_event_compare (cmp, event) < 0))
+    {
+	event = cmp;
+	event_queue->start_events++;
+    }
+    else
+    {
+	_pqueue_pop (&event_queue->pqueue);
+    }
+
+    return event;
+}
+
+CAIRO_COMBSORT_DECLARE (_cairo_bo_event_queue_sort,
+			cairo_bo_event_t *,
+			cairo_bo_event_compare)
+
+static void
+_cairo_bo_event_queue_init (cairo_bo_event_queue_t	 *event_queue,
+			    cairo_bo_event_t		**start_events,
+			    int				  num_events)
+{
+    event_queue->start_events = start_events;
+
+    _cairo_freepool_init (&event_queue->pool,
+			  sizeof (cairo_bo_queue_event_t));
+    _pqueue_init (&event_queue->pqueue);
+    event_queue->pqueue.elements[PQ_FIRST_ENTRY] = NULL;
+}
+
+static cairo_status_t
+_cairo_bo_event_queue_insert_stop (cairo_bo_event_queue_t	*event_queue,
+				   cairo_bo_edge_t		*edge)
+{
+    cairo_bo_point32_t point;
+
+    point.y = edge->edge.bottom;
+    point.x = _line_compute_intersection_x_for_y (&edge->edge.line,
+						  point.y);
+    return _cairo_bo_event_queue_insert (event_queue,
+					 CAIRO_BO_EVENT_TYPE_STOP,
+					 edge, NULL,
+					 &point);
+}
+
+static void
+_cairo_bo_event_queue_fini (cairo_bo_event_queue_t *event_queue)
+{
+    _pqueue_fini (&event_queue->pqueue);
+    _cairo_freepool_fini (&event_queue->pool);
+}
+
+static inline cairo_status_t
+_cairo_bo_event_queue_insert_if_intersect_below_current_y (cairo_bo_event_queue_t	*event_queue,
+							   cairo_bo_edge_t	*left,
+							   cairo_bo_edge_t *right)
+{
+    cairo_bo_point32_t intersection;
+
+    if (MAX (left->edge.line.p1.x, left->edge.line.p2.x) <=
+	MIN (right->edge.line.p1.x, right->edge.line.p2.x))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (cairo_lines_equal (&left->edge.line, &right->edge.line))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* The names "left" and "right" here are correct descriptions of
+     * the order of the two edges within the active edge list. So if a
+     * slope comparison also puts left less than right, then we know
+     * that the intersection of these two segments has already
+     * occurred before the current sweep line position. */
+    if (_slope_compare (left, right) <= 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! _cairo_bo_edge_intersect (left, right, &intersection))
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_bo_event_queue_insert (event_queue,
+					 CAIRO_BO_EVENT_TYPE_INTERSECTION,
+					 left, right,
+					 &intersection);
+}
+
+static void
+_cairo_bo_sweep_line_init (cairo_bo_sweep_line_t *sweep_line)
+{
+    sweep_line->head = NULL;
+    sweep_line->stopped = NULL;
+    sweep_line->current_y = INT32_MIN;
+    sweep_line->current_edge = NULL;
+}
+
+static void
+_cairo_bo_sweep_line_insert (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t		*edge)
+{
+    if (sweep_line->current_edge != NULL) {
+	cairo_bo_edge_t *prev, *next;
+	int cmp;
+
+	cmp = _cairo_bo_sweep_line_compare_edges (sweep_line,
+						  sweep_line->current_edge,
+						  edge);
+	if (cmp < 0) {
+	    prev = sweep_line->current_edge;
+	    next = prev->next;
+	    while (next != NULL &&
+		   _cairo_bo_sweep_line_compare_edges (sweep_line,
+						       next, edge) < 0)
+	    {
+		prev = next, next = prev->next;
+	    }
+
+	    prev->next = edge;
+	    edge->prev = prev;
+	    edge->next = next;
+	    if (next != NULL)
+		next->prev = edge;
+	} else if (cmp > 0) {
+	    next = sweep_line->current_edge;
+	    prev = next->prev;
+	    while (prev != NULL &&
+		   _cairo_bo_sweep_line_compare_edges (sweep_line,
+						       prev, edge) > 0)
+	    {
+		next = prev, prev = next->prev;
+	    }
+
+	    next->prev = edge;
+	    edge->next = next;
+	    edge->prev = prev;
+	    if (prev != NULL)
+		prev->next = edge;
+	    else
+		sweep_line->head = edge;
+	} else {
+	    prev = sweep_line->current_edge;
+	    edge->prev = prev;
+	    edge->next = prev->next;
+	    if (prev->next != NULL)
+		prev->next->prev = edge;
+	    prev->next = edge;
+	}
+    } else {
+	sweep_line->head = edge;
+	edge->next = NULL;
+    }
+
+    sweep_line->current_edge = edge;
+}
+
+static void
+_cairo_bo_sweep_line_delete (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t	*edge)
+{
+    if (edge->prev != NULL)
+	edge->prev->next = edge->next;
+    else
+	sweep_line->head = edge->next;
+
+    if (edge->next != NULL)
+	edge->next->prev = edge->prev;
+
+    if (sweep_line->current_edge == edge)
+	sweep_line->current_edge = edge->prev ? edge->prev : edge->next;
+}
+
+static void
+_cairo_bo_sweep_line_swap (cairo_bo_sweep_line_t	*sweep_line,
+			   cairo_bo_edge_t		*left,
+			   cairo_bo_edge_t		*right)
+{
+    if (left->prev != NULL)
+	left->prev->next = right;
+    else
+	sweep_line->head = right;
+
+    if (right->next != NULL)
+	right->next->prev = left;
+
+    left->next = right->next;
+    right->next = left;
+
+    right->prev = left->prev;
+    left->prev = right;
+}
+
+#if DEBUG_PRINT_STATE
+static void
+_cairo_bo_edge_print (cairo_bo_edge_t *edge)
+{
+    printf ("(0x%x, 0x%x)-(0x%x, 0x%x)",
+	    edge->edge.line.p1.x, edge->edge.line.p1.y,
+	    edge->edge.line.p2.x, edge->edge.line.p2.y);
+}
+
+static void
+_cairo_bo_event_print (cairo_bo_event_t *event)
+{
+    switch (event->type) {
+    case CAIRO_BO_EVENT_TYPE_START:
+	printf ("Start: ");
+	break;
+    case CAIRO_BO_EVENT_TYPE_STOP:
+	printf ("Stop: ");
+	break;
+    case CAIRO_BO_EVENT_TYPE_INTERSECTION:
+	printf ("Intersection: ");
+	break;
+    }
+    printf ("(%d, %d)\t", event->point.x, event->point.y);
+    _cairo_bo_edge_print (event->e1);
+    if (event->type == CAIRO_BO_EVENT_TYPE_INTERSECTION) {
+	printf (" X ");
+	_cairo_bo_edge_print (event->e2);
+    }
+    printf ("\n");
+}
+
+static void
+_cairo_bo_event_queue_print (cairo_bo_event_queue_t *event_queue)
+{
+    /* XXX: fixme to print the start/stop array too. */
+    printf ("Event queue:\n");
+}
+
+static void
+_cairo_bo_sweep_line_print (cairo_bo_sweep_line_t *sweep_line)
+{
+    cairo_bool_t first = TRUE;
+    cairo_bo_edge_t *edge;
+
+    printf ("Sweep line from edge list: ");
+    first = TRUE;
+    for (edge = sweep_line->head;
+	 edge;
+	 edge = edge->next)
+    {
+	if (!first)
+	    printf (", ");
+	_cairo_bo_edge_print (edge);
+	first = FALSE;
+    }
+    printf ("\n");
+}
+
+static void
+print_state (const char			*msg,
+	     cairo_bo_event_t		*event,
+	     cairo_bo_event_queue_t	*event_queue,
+	     cairo_bo_sweep_line_t	*sweep_line)
+{
+    printf ("%s ", msg);
+    _cairo_bo_event_print (event);
+    _cairo_bo_event_queue_print (event_queue);
+    _cairo_bo_sweep_line_print (sweep_line);
+    printf ("\n");
+}
+#endif
+
+#if DEBUG_EVENTS
+static void CAIRO_PRINTF_FORMAT (1, 2)
+event_log (const char *fmt, ...)
+{
+    FILE *file;
+
+    if (getenv ("CAIRO_DEBUG_EVENTS") == NULL)
+	return;
+
+    file = fopen ("bo-events.txt", "a");
+    if (file != NULL) {
+	va_list ap;
+
+	va_start (ap, fmt);
+	vfprintf (file, fmt, ap);
+	va_end (ap);
+
+	fclose (file);
+    }
+}
+#endif
+
+#define HAS_COLINEAR(a, b) ((cairo_bo_edge_t *)(((uintptr_t)(a))&~1) == (b))
+#define IS_COLINEAR(e) (((uintptr_t)(e))&1)
+#define MARK_COLINEAR(e, v) ((cairo_bo_edge_t *)(((uintptr_t)(e))|(v)))
+
+static inline cairo_bool_t
+edges_colinear (cairo_bo_edge_t *a, const cairo_bo_edge_t *b)
+{
+    unsigned p;
+
+    if (HAS_COLINEAR(a->colinear, b))
+	return IS_COLINEAR(a->colinear);
+
+    if (HAS_COLINEAR(b->colinear, a)) {
+	p = IS_COLINEAR(b->colinear);
+	a->colinear = MARK_COLINEAR(b, p);
+	return p;
+    }
+
+    p = 0;
+    p |= (a->edge.line.p1.x == b->edge.line.p1.x) << 0;
+    p |= (a->edge.line.p1.y == b->edge.line.p1.y) << 1;
+    p |= (a->edge.line.p2.x == b->edge.line.p2.x) << 3;
+    p |= (a->edge.line.p2.y == b->edge.line.p2.y) << 4;
+    if (p == ((1 << 0) | (1 << 1) | (1 << 3) | (1 << 4))) {
+	a->colinear = MARK_COLINEAR(b, 1);
+	return TRUE;
+    }
+
+    if (_slope_compare (a, b)) {
+	a->colinear = MARK_COLINEAR(b, 0);
+	return FALSE;
+    }
+
+    /* The choice of y is not truly arbitrary since we must guarantee that it
+     * is greater than the start of either line.
+     */
+    if (p != 0) {
+	/* colinear if either end-point are coincident */
+	p = (((p >> 1) & p) & 5) != 0;
+    } else if (a->edge.line.p1.y < b->edge.line.p1.y) {
+	p = edge_compare_for_y_against_x (b,
+					  a->edge.line.p1.y,
+					  a->edge.line.p1.x) == 0;
+    } else {
+	p = edge_compare_for_y_against_x (a,
+					  b->edge.line.p1.y,
+					  b->edge.line.p1.x) == 0;
+    }
+
+    a->colinear = MARK_COLINEAR(b, p);
+    return p;
+}
+
+/* Adds the trapezoid, if any, of the left edge to the #cairo_traps_t */
+static void
+_cairo_bo_edge_end_trap (cairo_bo_edge_t	*left,
+			 int32_t		 bot,
+			 cairo_traps_t	        *traps)
+{
+    cairo_bo_trap_t *trap = &left->deferred_trap;
+
+    /* Only emit (trivial) non-degenerate trapezoids with positive height. */
+    if (likely (trap->top < bot)) {
+	_cairo_traps_add_trap (traps,
+			       trap->top, bot,
+			       &left->edge.line, &trap->right->edge.line);
+
+#if DEBUG_PRINT_STATE
+	printf ("Deferred trap: left=(%x, %x)-(%x,%x) "
+		"right=(%x,%x)-(%x,%x) top=%x, bot=%x\n",
+		left->edge.line.p1.x, left->edge.line.p1.y,
+		left->edge.line.p2.x, left->edge.line.p2.y,
+		trap->right->edge.line.p1.x, trap->right->edge.line.p1.y,
+		trap->right->edge.line.p2.x, trap->right->edge.line.p2.y,
+		trap->top, bot);
+#endif
+#if DEBUG_EVENTS
+	event_log ("end trap: %lu %lu %d %d\n",
+		   (long) left,
+		   (long) trap->right,
+		   trap->top,
+		   bot);
+#endif
+    }
+
+    trap->right = NULL;
+}
+
+
+/* Start a new trapezoid at the given top y coordinate, whose edges
+ * are `edge' and `edge->next'. If `edge' already has a trapezoid,
+ * then either add it to the traps in `traps', if the trapezoid's
+ * right edge differs from `edge->next', or do nothing if the new
+ * trapezoid would be a continuation of the existing one. */
+static inline void
+_cairo_bo_edge_start_or_continue_trap (cairo_bo_edge_t	*left,
+				       cairo_bo_edge_t  *right,
+				       int               top,
+				       cairo_traps_t	*traps)
+{
+    if (left->deferred_trap.right == right)
+	return;
+
+    assert (right);
+    if (left->deferred_trap.right != NULL) {
+	if (edges_colinear (left->deferred_trap.right, right))
+	{
+	    /* continuation on right, so just swap edges */
+	    left->deferred_trap.right = right;
+	    return;
+	}
+
+	_cairo_bo_edge_end_trap (left, top, traps);
+    }
+
+    if (! edges_colinear (left, right)) {
+	left->deferred_trap.top = top;
+	left->deferred_trap.right = right;
+
+#if DEBUG_EVENTS
+	event_log ("begin trap: %lu %lu %d\n",
+		   (long) left,
+		   (long) right,
+		   top);
+#endif
+    }
+}
+
+static inline void
+_active_edges_to_traps (cairo_bo_edge_t	*pos,
+			int32_t		 top,
+			unsigned	 mask,
+			cairo_traps_t        *traps)
+{
+    cairo_bo_edge_t *left;
+    int in_out;
+
+
+#if DEBUG_PRINT_STATE
+    printf ("Processing active edges for %x\n", top);
+#endif
+
+    in_out = 0;
+    left = pos;
+    while (pos != NULL) {
+	if (pos != left && pos->deferred_trap.right) {
+	    /* XXX It shouldn't be possible to here with 2 deferred traps
+	     * on colinear edges... See bug-bo-rictoz.
+	     */
+	    if (left->deferred_trap.right == NULL &&
+		edges_colinear (left, pos))
+	    {
+		/* continuation on left */
+		left->deferred_trap = pos->deferred_trap;
+		pos->deferred_trap.right = NULL;
+	    }
+	    else
+	    {
+		_cairo_bo_edge_end_trap (pos, top, traps);
+	    }
+	}
+
+	in_out += pos->edge.dir;
+	if ((in_out & mask) == 0) {
+	    /* skip co-linear edges */
+	    if (pos->next == NULL || ! edges_colinear (pos, pos->next)) {
+		_cairo_bo_edge_start_or_continue_trap (left, pos, top, traps);
+		left = pos->next;
+	    }
+	}
+
+	pos = pos->next;
+    }
+}
+
+/* Execute a single pass of the Bentley-Ottmann algorithm on edges,
+ * generating trapezoids according to the fill_rule and appending them
+ * to traps. */
+static cairo_status_t
+_cairo_bentley_ottmann_tessellate_bo_edges (cairo_bo_event_t   **start_events,
+					    int			 num_events,
+					    unsigned		 fill_rule,
+					    cairo_traps_t	*traps,
+					    int			*num_intersections)
+{
+    cairo_status_t status;
+    int intersection_count = 0;
+    cairo_bo_event_queue_t event_queue;
+    cairo_bo_sweep_line_t sweep_line;
+    cairo_bo_event_t *event;
+    cairo_bo_edge_t *left, *right;
+    cairo_bo_edge_t *e1, *e2;
+
+    /* convert the fill_rule into a winding mask */
+    if (fill_rule == CAIRO_FILL_RULE_WINDING)
+	fill_rule = (unsigned) -1;
+    else
+	fill_rule = 1;
+
+#if DEBUG_EVENTS
+    {
+	int i;
+
+	for (i = 0; i < num_events; i++) {
+	    cairo_bo_start_event_t *event =
+		((cairo_bo_start_event_t **) start_events)[i];
+	    event_log ("edge: %lu (%d, %d) (%d, %d) (%d, %d) %d\n",
+		       (long) &events[i].edge,
+		       event->edge.edge.line.p1.x,
+		       event->edge.edge.line.p1.y,
+		       event->edge.edge.line.p2.x,
+		       event->edge.edge.line.p2.y,
+		       event->edge.top,
+		       event->edge.bottom,
+		       event->edge.edge.dir);
+	}
+    }
+#endif
+
+    _cairo_bo_event_queue_init (&event_queue, start_events, num_events);
+    _cairo_bo_sweep_line_init (&sweep_line);
+
+    while ((event = _cairo_bo_event_dequeue (&event_queue))) {
+	if (event->point.y != sweep_line.current_y) {
+	    for (e1 = sweep_line.stopped; e1; e1 = e1->next) {
+		if (e1->deferred_trap.right != NULL) {
+		    _cairo_bo_edge_end_trap (e1,
+					     e1->edge.bottom,
+					     traps);
+		}
+	    }
+	    sweep_line.stopped = NULL;
+
+	    _active_edges_to_traps (sweep_line.head,
+				    sweep_line.current_y,
+				    fill_rule, traps);
+
+	    sweep_line.current_y = event->point.y;
+	}
+
+#if DEBUG_EVENTS
+	event_log ("event: %d (%ld, %ld) %lu, %lu\n",
+		   event->type,
+		   (long) event->point.x,
+		   (long) event->point.y,
+		   (long) event->e1,
+		   (long) event->e2);
+#endif
+
+	switch (event->type) {
+	case CAIRO_BO_EVENT_TYPE_START:
+	    e1 = &((cairo_bo_start_event_t *) event)->edge;
+
+	    _cairo_bo_sweep_line_insert (&sweep_line, e1);
+
+	    status = _cairo_bo_event_queue_insert_stop (&event_queue, e1);
+	    if (unlikely (status))
+		goto unwind;
+
+	    /* check to see if this is a continuation of a stopped edge */
+	    /* XXX change to an infinitesimal lengthening rule */
+	    for (left = sweep_line.stopped; left; left = left->next) {
+		if (e1->edge.top <= left->edge.bottom &&
+		    edges_colinear (e1, left))
+		{
+		    e1->deferred_trap = left->deferred_trap;
+		    if (left->prev != NULL)
+			left->prev = left->next;
+		    else
+			sweep_line.stopped = left->next;
+		    if (left->next != NULL)
+			left->next->prev = left->prev;
+		    break;
+		}
+	    }
+
+	    left = e1->prev;
+	    right = e1->next;
+
+	    if (left != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, left, e1);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    if (right != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, e1, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_STOP:
+	    e1 = ((cairo_bo_queue_event_t *) event)->e1;
+	    _cairo_bo_event_queue_delete (&event_queue, event);
+
+	    left = e1->prev;
+	    right = e1->next;
+
+	    _cairo_bo_sweep_line_delete (&sweep_line, e1);
+
+	    /* first, check to see if we have a continuation via a fresh edge */
+	    if (e1->deferred_trap.right != NULL) {
+		e1->next = sweep_line.stopped;
+		if (sweep_line.stopped != NULL)
+		    sweep_line.stopped->prev = e1;
+		sweep_line.stopped = e1;
+		e1->prev = NULL;
+	    }
+
+	    if (left != NULL && right != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, left, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_INTERSECTION:
+	    e1 = ((cairo_bo_queue_event_t *) event)->e1;
+	    e2 = ((cairo_bo_queue_event_t *) event)->e2;
+	    _cairo_bo_event_queue_delete (&event_queue, event);
+
+	    /* skip this intersection if its edges are not adjacent */
+	    if (e2 != e1->next)
+		break;
+
+	    intersection_count++;
+
+	    left = e1->prev;
+	    right = e2->next;
+
+	    _cairo_bo_sweep_line_swap (&sweep_line, e1, e2);
+
+	    /* after the swap e2 is left of e1 */
+
+	    if (left != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, left, e2);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    if (right != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, e1, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+	}
+    }
+
+    *num_intersections = intersection_count;
+    for (e1 = sweep_line.stopped; e1; e1 = e1->next) {
+	if (e1->deferred_trap.right != NULL) {
+	    _cairo_bo_edge_end_trap (e1, e1->edge.bottom, traps);
+	}
+    }
+    status = traps->status;
+ unwind:
+    _cairo_bo_event_queue_fini (&event_queue);
+
+#if DEBUG_EVENTS
+    event_log ("\n");
+#endif
+
+    return status;
+}
+
+cairo_status_t
+_cairo_bentley_ottmann_tessellate_polygon (cairo_traps_t	 *traps,
+					   const cairo_polygon_t *polygon,
+					   cairo_fill_rule_t	  fill_rule)
+{
+    int intersections;
+    cairo_bo_start_event_t stack_events[CAIRO_STACK_ARRAY_LENGTH (cairo_bo_start_event_t)];
+    cairo_bo_start_event_t *events;
+    cairo_bo_event_t *stack_event_ptrs[ARRAY_LENGTH (stack_events) + 1];
+    cairo_bo_event_t **event_ptrs;
+    cairo_bo_start_event_t *stack_event_y[64];
+    cairo_bo_start_event_t **event_y = NULL;
+    int i, num_events, y, ymin, ymax;
+    cairo_status_t status;
+
+    num_events = polygon->num_edges;
+    if (unlikely (0 == num_events))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (polygon->num_limits) {
+	ymin = _cairo_fixed_integer_floor (polygon->limit.p1.y);
+	ymax = _cairo_fixed_integer_ceil (polygon->limit.p2.y) - ymin;
+
+	if (ymax > 64) {
+	    event_y = _cairo_malloc_ab(sizeof (cairo_bo_event_t*), ymax);
+	    if (unlikely (event_y == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	} else {
+	    event_y = stack_event_y;
+	}
+	memset (event_y, 0, ymax * sizeof(cairo_bo_event_t *));
+    }
+
+    events = stack_events;
+    event_ptrs = stack_event_ptrs;
+    if (num_events > ARRAY_LENGTH (stack_events)) {
+	events = _cairo_malloc_ab_plus_c (num_events,
+					  sizeof (cairo_bo_start_event_t) +
+					  sizeof (cairo_bo_event_t *),
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (events == NULL)) {
+	    if (event_y != stack_event_y)
+		free (event_y);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	event_ptrs = (cairo_bo_event_t **) (events + num_events);
+    }
+
+    for (i = 0; i < num_events; i++) {
+	events[i].type = CAIRO_BO_EVENT_TYPE_START;
+	events[i].point.y = polygon->edges[i].top;
+	events[i].point.x =
+	    _line_compute_intersection_x_for_y (&polygon->edges[i].line,
+						events[i].point.y);
+
+	events[i].edge.edge = polygon->edges[i];
+	events[i].edge.deferred_trap.right = NULL;
+	events[i].edge.prev = NULL;
+	events[i].edge.next = NULL;
+	events[i].edge.colinear = NULL;
+
+	if (event_y) {
+	    y = _cairo_fixed_integer_floor (events[i].point.y) - ymin;
+	    events[i].edge.next = (cairo_bo_edge_t *) event_y[y];
+	    event_y[y] = (cairo_bo_start_event_t *) &events[i];
+	} else
+	    event_ptrs[i] = (cairo_bo_event_t *) &events[i];
+    }
+
+    if (event_y) {
+	for (y = i = 0; y < ymax && i < num_events; y++) {
+	    cairo_bo_start_event_t *e;
+	    int j = i;
+	    for (e = event_y[y]; e; e = (cairo_bo_start_event_t *)e->edge.next)
+		event_ptrs[i++] = (cairo_bo_event_t *) e;
+	    if (i > j + 1)
+		_cairo_bo_event_queue_sort (event_ptrs+j, i-j);
+	}
+	if (event_y != stack_event_y)
+	    free (event_y);
+    } else
+	_cairo_bo_event_queue_sort (event_ptrs, i);
+    event_ptrs[i] = NULL;
+
+#if DEBUG_TRAPS
+    dump_edges (events, num_events, "bo-polygon-edges.txt");
+#endif
+
+    /* XXX: This would be the convenient place to throw in multiple
+     * passes of the Bentley-Ottmann algorithm. It would merely
+     * require storing the results of each pass into a temporary
+     * cairo_traps_t. */
+    status = _cairo_bentley_ottmann_tessellate_bo_edges (event_ptrs, num_events,
+							 fill_rule, traps,
+							 &intersections);
+#if DEBUG_TRAPS
+    dump_traps (traps, "bo-polygon-out.txt");
+#endif
+
+    if (events != stack_events)
+	free (events);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_bentley_ottmann_tessellate_traps (cairo_traps_t *traps,
+					 cairo_fill_rule_t fill_rule)
+{
+    cairo_status_t status;
+    cairo_polygon_t polygon;
+    int i;
+
+    if (unlikely (0 == traps->num_traps))
+	return CAIRO_STATUS_SUCCESS;
+
+#if DEBUG_TRAPS
+    dump_traps (traps, "bo-traps-in.txt");
+#endif
+
+    _cairo_polygon_init (&polygon, traps->limits, traps->num_limits);
+
+    for (i = 0; i < traps->num_traps; i++) {
+	status = _cairo_polygon_add_line (&polygon,
+					  &traps->traps[i].left,
+					  traps->traps[i].top,
+					  traps->traps[i].bottom,
+					  1);
+	if (unlikely (status))
+	    goto CLEANUP;
+
+	status = _cairo_polygon_add_line (&polygon,
+					  &traps->traps[i].right,
+					  traps->traps[i].top,
+					  traps->traps[i].bottom,
+					  -1);
+	if (unlikely (status))
+	    goto CLEANUP;
+    }
+
+    _cairo_traps_clear (traps);
+    status = _cairo_bentley_ottmann_tessellate_polygon (traps,
+							&polygon,
+							fill_rule);
+
+#if DEBUG_TRAPS
+    dump_traps (traps, "bo-traps-out.txt");
+#endif
+
+  CLEANUP:
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+#if 0
+static cairo_bool_t
+edges_have_an_intersection_quadratic (cairo_bo_edge_t	*edges,
+				      int		 num_edges)
+
+{
+    int i, j;
+    cairo_bo_edge_t *a, *b;
+    cairo_bo_point32_t intersection;
+
+    /* We must not be given any upside-down edges. */
+    for (i = 0; i < num_edges; i++) {
+	assert (_cairo_bo_point32_compare (&edges[i].top, &edges[i].bottom) < 0);
+	edges[i].line.p1.x <<= CAIRO_BO_GUARD_BITS;
+	edges[i].line.p1.y <<= CAIRO_BO_GUARD_BITS;
+	edges[i].line.p2.x <<= CAIRO_BO_GUARD_BITS;
+	edges[i].line.p2.y <<= CAIRO_BO_GUARD_BITS;
+    }
+
+    for (i = 0; i < num_edges; i++) {
+	for (j = 0; j < num_edges; j++) {
+	    if (i == j)
+		continue;
+
+	    a = &edges[i];
+	    b = &edges[j];
+
+	    if (! _cairo_bo_edge_intersect (a, b, &intersection))
+		continue;
+
+	    printf ("Found intersection (%d,%d) between (%d,%d)-(%d,%d) and (%d,%d)-(%d,%d)\n",
+		    intersection.x,
+		    intersection.y,
+		    a->line.p1.x, a->line.p1.y,
+		    a->line.p2.x, a->line.p2.y,
+		    b->line.p1.x, b->line.p1.y,
+		    b->line.p2.x, b->line.p2.y);
+
+	    return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+#define TEST_MAX_EDGES 10
+
+typedef struct test {
+    const char *name;
+    const char *description;
+    int num_edges;
+    cairo_bo_edge_t edges[TEST_MAX_EDGES];
+} test_t;
+
+static test_t
+tests[] = {
+    {
+	"3 near misses",
+	"3 edges all intersecting very close to each other",
+	3,
+	{
+	    { { 4, 2}, {0, 0}, { 9, 9}, NULL, NULL },
+	    { { 7, 2}, {0, 0}, { 2, 3}, NULL, NULL },
+	    { { 5, 2}, {0, 0}, { 1, 7}, NULL, NULL }
+	}
+    },
+    {
+	"inconsistent data",
+	"Derived from random testing---was leading to skip list and edge list disagreeing.",
+	2,
+	{
+	    { { 2, 3}, {0, 0}, { 8, 9}, NULL, NULL },
+	    { { 2, 3}, {0, 0}, { 6, 7}, NULL, NULL }
+	}
+    },
+    {
+	"failed sort",
+	"A test derived from random testing that leads to an inconsistent sort --- looks like we just can't attempt to validate the sweep line with edge_compare?",
+	3,
+	{
+	    { { 6, 2}, {0, 0}, { 6, 5}, NULL, NULL },
+	    { { 3, 5}, {0, 0}, { 5, 6}, NULL, NULL },
+	    { { 9, 2}, {0, 0}, { 5, 6}, NULL, NULL },
+	}
+    },
+    {
+	"minimal-intersection",
+	"Intersection of a two from among the smallest possible edges.",
+	2,
+	{
+	    { { 0, 0}, {0, 0}, { 1, 1}, NULL, NULL },
+	    { { 1, 0}, {0, 0}, { 0, 1}, NULL, NULL }
+	}
+    },
+    {
+	"simple",
+	"A simple intersection of two edges at an integer (2,2).",
+	2,
+	{
+	    { { 1, 1}, {0, 0}, { 3, 3}, NULL, NULL },
+	    { { 2, 1}, {0, 0}, { 2, 3}, NULL, NULL }
+	}
+    },
+    {
+	"bend-to-horizontal",
+	"With intersection truncation one edge bends to horizontal",
+	2,
+	{
+	    { { 9, 1}, {0, 0}, {3, 7}, NULL, NULL },
+	    { { 3, 5}, {0, 0}, {9, 9}, NULL, NULL }
+	}
+    }
+};
+
+/*
+    {
+	"endpoint",
+	"An intersection that occurs at the endpoint of a segment.",
+	{
+	    { { 4, 6}, { 5, 6}, NULL, { { NULL }} },
+	    { { 4, 5}, { 5, 7}, NULL, { { NULL }} },
+	    { { 0, 0}, { 0, 0}, NULL, { { NULL }} },
+	}
+    }
+    {
+	name = "overlapping",
+	desc = "Parallel segments that share an endpoint, with different slopes.",
+	edges = {
+	    { top = { x = 2, y = 0}, bottom = { x = 1, y = 1}},
+	    { top = { x = 2, y = 0}, bottom = { x = 0, y = 2}},
+	    { top = { x = 0, y = 3}, bottom = { x = 1, y = 3}},
+	    { top = { x = 0, y = 3}, bottom = { x = 2, y = 3}},
+	    { top = { x = 0, y = 4}, bottom = { x = 0, y = 6}},
+	    { top = { x = 0, y = 5}, bottom = { x = 0, y = 6}}
+	}
+    },
+    {
+	name = "hobby_stage_3",
+	desc = "A particularly tricky part of the 3rd stage of the 'hobby' test below.",
+	edges = {
+	    { top = { x = -1, y = -2}, bottom = { x =  4, y = 2}},
+	    { top = { x =  5, y =  3}, bottom = { x =  9, y = 5}},
+	    { top = { x =  5, y =  3}, bottom = { x =  6, y = 3}},
+	}
+    },
+    {
+	name = "hobby",
+	desc = "Example from John Hobby's paper. Requires 3 passes of the iterative algorithm.",
+	edges = {
+	    { top = { x =   0, y =   0}, bottom = { x =   9, y =   5}},
+	    { top = { x =   0, y =   0}, bottom = { x =  13, y =   6}},
+	    { top = { x =  -1, y =  -2}, bottom = { x =   9, y =   5}}
+	}
+    },
+    {
+	name = "slope",
+	desc = "Edges with same start/stop points but different slopes",
+	edges = {
+	    { top = { x = 4, y = 1}, bottom = { x = 6, y = 3}},
+	    { top = { x = 4, y = 1}, bottom = { x = 2, y = 3}},
+	    { top = { x = 2, y = 4}, bottom = { x = 4, y = 6}},
+	    { top = { x = 6, y = 4}, bottom = { x = 4, y = 6}}
+	}
+    },
+    {
+	name = "horizontal",
+	desc = "Test of a horizontal edge",
+	edges = {
+	    { top = { x = 1, y = 1}, bottom = { x = 6, y = 6}},
+	    { top = { x = 2, y = 3}, bottom = { x = 5, y = 3}}
+	}
+    },
+    {
+	name = "vertical",
+	desc = "Test of a vertical edge",
+	edges = {
+	    { top = { x = 5, y = 1}, bottom = { x = 5, y = 7}},
+	    { top = { x = 2, y = 4}, bottom = { x = 8, y = 5}}
+	}
+    },
+    {
+	name = "congruent",
+	desc = "Two overlapping edges with the same slope",
+	edges = {
+	    { top = { x = 5, y = 1}, bottom = { x = 5, y = 7}},
+	    { top = { x = 5, y = 2}, bottom = { x = 5, y = 6}},
+	    { top = { x = 2, y = 4}, bottom = { x = 8, y = 5}}
+	}
+    },
+    {
+	name = "multi",
+	desc = "Several segments with a common intersection point",
+	edges = {
+	    { top = { x = 1, y = 2}, bottom = { x = 5, y = 4} },
+	    { top = { x = 1, y = 1}, bottom = { x = 5, y = 5} },
+	    { top = { x = 2, y = 1}, bottom = { x = 4, y = 5} },
+	    { top = { x = 4, y = 1}, bottom = { x = 2, y = 5} },
+	    { top = { x = 5, y = 1}, bottom = { x = 1, y = 5} },
+	    { top = { x = 5, y = 2}, bottom = { x = 1, y = 4} }
+	}
+    }
+};
+*/
+
+static int
+run_test (const char		*test_name,
+          cairo_bo_edge_t	*test_edges,
+          int			 num_edges)
+{
+    int i, intersections, passes;
+    cairo_bo_edge_t *edges;
+    cairo_array_t intersected_edges;
+
+    printf ("Testing: %s\n", test_name);
+
+    _cairo_array_init (&intersected_edges, sizeof (cairo_bo_edge_t));
+
+    intersections = _cairo_bentley_ottmann_intersect_edges (test_edges, num_edges, &intersected_edges);
+    if (intersections)
+	printf ("Pass 1 found %d intersections:\n", intersections);
+
+
+    /* XXX: Multi-pass Bentley-Ottmmann. Preferable would be to add a
+     * pass of Hobby's tolerance-square algorithm instead. */
+    passes = 1;
+    while (intersections) {
+	int num_edges = _cairo_array_num_elements (&intersected_edges);
+	passes++;
+	edges = _cairo_malloc_ab (num_edges, sizeof (cairo_bo_edge_t));
+	assert (edges != NULL);
+	memcpy (edges, _cairo_array_index (&intersected_edges, 0), num_edges * sizeof (cairo_bo_edge_t));
+	_cairo_array_fini (&intersected_edges);
+	_cairo_array_init (&intersected_edges, sizeof (cairo_bo_edge_t));
+	intersections = _cairo_bentley_ottmann_intersect_edges (edges, num_edges, &intersected_edges);
+	free (edges);
+
+	if (intersections){
+	    printf ("Pass %d found %d remaining intersections:\n", passes, intersections);
+	} else {
+	    if (passes > 3)
+		for (i = 0; i < passes; i++)
+		    printf ("*");
+	    printf ("No remainining intersections found after pass %d\n", passes);
+	}
+    }
+
+    if (edges_have_an_intersection_quadratic (_cairo_array_index (&intersected_edges, 0),
+					      _cairo_array_num_elements (&intersected_edges)))
+	printf ("*** FAIL ***\n");
+    else
+	printf ("PASS\n");
+
+    _cairo_array_fini (&intersected_edges);
+
+    return 0;
+}
+
+#define MAX_RANDOM 300
+
+int
+main (void)
+{
+    char random_name[] = "random-XX";
+    cairo_bo_edge_t random_edges[MAX_RANDOM], *edge;
+    unsigned int i, num_random;
+    test_t *test;
+
+    for (i = 0; i < ARRAY_LENGTH (tests); i++) {
+	test = &tests[i];
+	run_test (test->name, test->edges, test->num_edges);
+    }
+
+    for (num_random = 0; num_random < MAX_RANDOM; num_random++) {
+	srand (0);
+	for (i = 0; i < num_random; i++) {
+	    do {
+		edge = &random_edges[i];
+		edge->line.p1.x = (int32_t) (10.0 * (rand() / (RAND_MAX + 1.0)));
+		edge->line.p1.y = (int32_t) (10.0 * (rand() / (RAND_MAX + 1.0)));
+		edge->line.p2.x = (int32_t) (10.0 * (rand() / (RAND_MAX + 1.0)));
+		edge->line.p2.y = (int32_t) (10.0 * (rand() / (RAND_MAX + 1.0)));
+		if (edge->line.p1.y > edge->line.p2.y) {
+		    int32_t tmp = edge->line.p1.y;
+		    edge->line.p1.y = edge->line.p2.y;
+		    edge->line.p2.y = tmp;
+		}
+	    } while (edge->line.p1.y == edge->line.p2.y);
+	}
+
+	sprintf (random_name, "random-%02d", num_random);
+
+	run_test (random_name, random_edges, num_random);
+    }
+
+    return 0;
+}
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-beos-surface.cpp b/libs/cairo-1.16.0/src/cairo-beos-surface.cpp
new file mode 100644
index 0000000..c976416
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-beos-surface.cpp
@@ -0,0 +1,984 @@
+/* vim:set ts=8 sw=4 noet cin: */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Christian Biesinger <cbiesinger@web.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Christian Biesinger
+ * <cbiesinger@web.de>
+ *
+ * Contributor(s):
+ */
+
+// This is a C++ file in order to use the C++ BeOS API
+
+#include "cairoint.h"
+
+#include "cairo-beos.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+
+#include <new>
+
+#include <Bitmap.h>
+#include <Region.h>
+#if 0
+#include <DirectWindow.h>
+#endif
+#include <Screen.h>
+#include <Window.h>
+#include <Locker.h>
+
+/**
+ * SECTION:beos-surface
+ * @Title: BeOS Surfaces
+ * @Short_Description: BeOS surface support
+ * @See_Also: #cairo_surface_t
+ *
+ * The BeOS surface is used to render cairo graphics to BeOS views 
+ * and bitmaps.
+ **/
+
+#define CAIRO_INT_STATUS_SUCCESS (cairo_int_status_t)(CAIRO_STATUS_SUCCESS)
+
+struct cairo_beos_surface_t {
+    cairo_surface_t base;
+
+    cairo_region_t *clip_region;
+
+    BView* view;
+
+    /*
+     * A view is either attached to a bitmap, a window, or unattached.
+     * If it is attached to a window, we can copy data out of it using BScreen.
+     * If it is attached to a bitmap, we can read the bitmap data.
+     * If it is not attached, it doesn't draw anything, we need not bother.
+     *
+     * Since there doesn't seem to be a way to get the bitmap from a view if it
+     * is attached to one, we have to use a special surface creation function.
+     */
+
+    BBitmap* bitmap;
+
+    // If true, surface and view should be deleted when this surface is
+    // destroyed
+    bool owns_bitmap_view;
+};
+
+class AutoLockView {
+    public:
+	AutoLockView(BView* view) : mView(view) {
+	    mOK = mView->LockLooper();
+	}
+
+	~AutoLockView() {
+	    if (mOK)
+		mView->UnlockLooper();
+	}
+
+	operator bool() {
+	    return mOK;
+	}
+
+    private:
+	BView* mView;
+	bool   mOK;
+};
+
+static cairo_surface_t *
+_cairo_beos_surface_create_internal (BView*   view,
+				     BBitmap* bmp,
+				     bool     owns_bitmap_view = false);
+
+static inline BRect
+_cairo_rectangle_to_brect (const cairo_rectangle_int_t* rect)
+{
+    // A BRect is one pixel wider than you'd think
+    return BRect (rect->x, rect->y,
+		  rect->x + rect->width - 1,
+		  rect->y + rect->height - 1);
+}
+
+static inline cairo_rectangle_int_t
+_brect_to_cairo_rectangle (const BRect &rect)
+{
+    cairo_rectangle_int_t retval;
+    retval.x = floor (rect.left);
+    retval.y = floor (rect.top);
+    retval.width = ceil (rect.right) - retval.x + 1;
+    retval.height = ceil (rect.bottom) - rectval.y + 1;
+    return retval;
+}
+
+static inline rgb_color
+_cairo_color_to_be_color (const cairo_color_t *color)
+{
+    // This factor ensures a uniform distribution of numbers
+    const float factor = 256 - 1e-5;
+    // Using doubles to have non-premultiplied colors
+    rgb_color be_color = { uint8(color->red * factor),
+			   uint8(color->green * factor),
+			   uint8(color->blue * factor),
+			   uint8(color->alpha * factor) };
+
+    return be_color;
+}
+
+enum ViewCopyStatus {
+    OK,
+    NOT_VISIBLE, // The view or the interest rect is not visible on screen
+    ERROR        // The view was visible, but the rect could not be copied. Probably OOM
+};
+
+/**
+ * _cairo_beos_view_to_bitmap:
+ * @bitmap: [out] The resulting bitmap.
+ * @rect: [out] The rectangle that was copied, in the view's coordinate system
+ * @interestRect: If non-null, only this part of the view will be copied (view's coord system).
+ *
+ * Gets the contents of the view as a BBitmap*. Caller must delete the bitmap.
+ **/
+static ViewCopyStatus
+_cairo_beos_view_to_bitmap (BView*       view,
+			    BBitmap**    bitmap,
+			    BRect*       rect = NULL,
+			    const BRect* interestRect = NULL)
+{
+    *bitmap = NULL;
+
+    BWindow* wnd = view->Window();
+    // If we have no window, can't do anything
+    if (!wnd)
+	return NOT_VISIBLE;
+
+    view->Sync();
+    wnd->Sync();
+
+#if 0
+    // Is it a direct window?
+    BDirectWindow* directWnd = dynamic_cast<BDirectWindow*>(wnd);
+    if (directWnd) {
+	// WRITEME
+    }
+#endif
+
+    // Is it visible? If so, we can copy the content off the screen
+    if (wnd->IsHidden())
+	return NOT_VISIBLE;
+
+    BRect rectToCopy(view->Bounds());
+    if (interestRect)
+	rectToCopy = rectToCopy & *interestRect;
+
+    if (!rectToCopy.IsValid())
+	return NOT_VISIBLE;
+
+    BScreen screen(wnd);
+    BRect screenRect(view->ConvertToScreen(rectToCopy));
+    screenRect = screenRect & screen.Frame();
+
+    if (!screen.IsValid())
+	return NOT_VISIBLE;
+
+    if (rect)
+	*rect = view->ConvertFromScreen(screenRect);
+
+    if (screen.GetBitmap(bitmap, false, &screenRect) == B_OK)
+	return OK;
+
+    return ERROR;
+}
+
+static void
+unpremultiply_bgra (unsigned char* data,
+		    int            width,
+		    int            height,
+		    int            stride,
+		    unsigned char* retdata)
+{
+    unsigned char* end = data + stride * height;
+    for (unsigned char* in = data, *out = retdata;
+	 in < end;
+	 in += stride, out += stride)
+    {
+	for (int i = 0; i < width; i ++) {
+	    uint8_t *b = &out[4*i];
+	    uint32_t pixel;
+	    uint8_t  alpha;
+
+	    memcpy (&pixel, &data[4*i], sizeof (uint32_t));
+	    alpha = pixel & 0xff;
+	    if (alpha == 0) {
+		b[0] = b[1] = b[2] = b[3] = 0;
+	    } else {
+		b[0] = (((pixel >> 24) & 0xff) * 255 + alpha / 2) / alpha;
+		b[1] = (((pixel >> 16) & 0xff) * 255 + alpha / 2) / alpha;
+		b[2] = (((pixel >>  8) & 0xff) * 255 + alpha / 2) / alpha;
+		b[3] = alpha;
+	    }
+	}
+    }
+}
+
+static inline int
+multiply_alpha (int alpha, int color)
+{
+    int temp = (alpha * color) + 0x80;
+    return ((temp + (temp >> 8)) >> 8);
+}
+
+static unsigned char*
+premultiply_bgra (unsigned char* data,
+		  int            width,
+		  int            height,
+		  int            stride)
+{
+    uint8_t * retdata = reinterpret_cast<unsigned char*>(_cairo_malloc_ab(height, stride));
+    if (!retdata)
+	return NULL;
+
+    uint8_t * end = data + stride * height;
+    for (uint8_t * in = data, *out = retdata;
+	 in < end;
+	 in += stride, out += stride)
+    {
+	for (int i = 0; i < width; i ++) {
+	    uint8_t *base  = &in[4*i];
+	    uint8_t  alpha = base[3];
+	    uint32_t p;
+
+	    if (alpha == 0) {
+		p = 0;
+	    } else {
+		uint8_t  blue  = base[0];
+		uint8_t  green = base[1];
+		uint8_t  red   = base[2];
+
+		if (alpha != 0xff) {
+		    blue  = multiply_alpha (alpha, blue);
+		    green = multiply_alpha (alpha, green);
+		    red   = multiply_alpha (alpha, red);
+		}
+		p = (alpha << 0) | (red << 8) | (green << 16) | (blue << 24);
+	    }
+	    memcpy (&out[4*i], &p, sizeof (uint32_t));
+	}
+    }
+    return retdata;
+}
+
+static cairo_int_status_t
+_cairo_beos_surface_set_clip_region (cairo_beos_surface_t *surface,
+				     cairo_region_t	*region)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+    AutoLockView locker(surface->view);
+    assert (locker);
+
+    if (region == surface->clip_region)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    cairo_region_destroy (surface->clip_region);
+    surface->clip_region = cairo_region_reference (region);
+
+    if (region == NULL) {
+	// No clipping
+	surface->view->ConstrainClippingRegion(NULL);
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    int count = cairo_region_num_rectangles (region);
+    BRegion bregion;
+    for (int i = 0; i < count; ++i) {
+	cairo_rectangle_int_t rect;
+
+	cairo_region_get_rectangle (region, i, &rect);
+	// Have to subtract one, because for pixman, the second coordinate
+	// lies outside the rectangle.
+	bregion.Include (_cairo_rectangle_to_brect (&rect));
+    }
+    surface->view->ConstrainClippingRegion(&bregion);
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+
+/**
+ * _cairo_beos_bitmap_to_surface:
+ *
+ * Returns an addrefed image surface for a BBitmap. The bitmap need not outlive
+ * the surface.
+ **/
+static cairo_image_surface_t*
+_cairo_beos_bitmap_to_surface (BBitmap* bitmap)
+{
+    color_space format = bitmap->ColorSpace();
+    if (format != B_RGB32 && format != B_RGBA32) {
+	BBitmap bmp(bitmap->Bounds(), B_RGB32, true);
+	BView view(bitmap->Bounds(), "Cairo bitmap drawing view",
+		   B_FOLLOW_ALL_SIDES, 0);
+	bmp.AddChild(&view);
+
+	view.LockLooper();
+
+	view.DrawBitmap(bitmap, BPoint(0.0, 0.0));
+	view.Sync();
+
+	cairo_image_surface_t* imgsurf = _cairo_beos_bitmap_to_surface(&bmp);
+
+	view.UnlockLooper();
+	bmp.RemoveChild(&view);
+	return imgsurf;
+    }
+
+    cairo_format_t cformat = format == B_RGB32 ?
+	                     CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32;
+
+    BRect bounds(bitmap->Bounds());
+    unsigned char* bits = reinterpret_cast<unsigned char*>(bitmap->Bits());
+    int width = bounds.IntegerWidth() + 1;
+    int height = bounds.IntegerHeight() + 1;
+    unsigned char* premultiplied;
+    if (cformat == CAIRO_FORMAT_ARGB32) {
+       premultiplied = premultiply_bgra (bits, width, height,
+					 bitmap->BytesPerRow());
+    } else {
+	premultiplied = reinterpret_cast<unsigned char*>(
+					_cairo_malloc_ab(bitmap->BytesPerRow(), height));
+	if (premultiplied)
+	    memcpy(premultiplied, bits, bitmap->BytesPerRow() * height);
+    }
+    if (!premultiplied)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    cairo_image_surface_t* surf = reinterpret_cast<cairo_image_surface_t*>
+	(cairo_image_surface_create_for_data(premultiplied,
+					     cformat,
+					     width,
+					     height,
+					     bitmap->BytesPerRow()));
+    if (surf->base.status)
+	free(premultiplied);
+    else
+	_cairo_image_surface_assume_ownership_of_data(surf);
+    return surf;
+}
+
+/**
+ * _cairo_image_surface_to_bitmap:
+ *
+ * Converts an image surface to a BBitmap. The return value must be freed with
+ * delete.
+ **/
+static BBitmap*
+_cairo_image_surface_to_bitmap (cairo_image_surface_t* surface)
+{
+    BRect size(0.0, 0.0, surface->width - 1, surface->height - 1);
+    switch (surface->format) {
+	case CAIRO_FORMAT_ARGB32: {
+	    BBitmap* data = new BBitmap(size, B_RGBA32);
+	    unpremultiply_bgra (surface->data,
+				surface->width,
+				surface->height,
+				surface->stride,
+				reinterpret_cast<unsigned char*>(data->Bits()));
+	    return data;
+        }
+	case CAIRO_FORMAT_RGB24: {
+	    BBitmap* data = new BBitmap(size, B_RGB32);
+	    memcpy(data->Bits(), surface->data, surface->height * surface->stride);
+	    return data;
+	}
+	default:
+	    assert(0);
+	    return NULL;
+    }
+}
+
+/**
+ * _cairo_op_to_be_op:
+ *
+ * Converts a cairo drawing operator to a beos drawing_mode. Returns true if
+ * the operator could be converted, false otherwise.
+ **/
+static bool
+_cairo_op_to_be_op (cairo_operator_t cairo_op,
+		    drawing_mode*    beos_op)
+{
+    switch (cairo_op) {
+    case CAIRO_OPERATOR_SOURCE:
+	*beos_op = B_OP_COPY;
+	return true;
+    case CAIRO_OPERATOR_OVER:
+	*beos_op = B_OP_ALPHA;
+	return true;
+
+    case CAIRO_OPERATOR_ADD:
+	// Does not actually work
+	// XXX This is a fundamental compositing operator, it has to work!
+#if 1
+	return false;
+#else
+	*beos_op = B_OP_ADD;
+	return true;
+#endif
+
+    case CAIRO_OPERATOR_CLEAR:
+	// Does not map to B_OP_ERASE - it replaces the dest with the low
+	// color, instead of transparency; could be done by setting low
+	// color appropriately.
+
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_OUT:
+    case CAIRO_OPERATOR_ATOP:
+
+    case CAIRO_OPERATOR_DEST:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_DEST_OUT:
+    case CAIRO_OPERATOR_DEST_ATOP:
+
+    case CAIRO_OPERATOR_XOR:
+    case CAIRO_OPERATOR_SATURATE:
+
+    default:
+	return false;
+    }
+}
+
+static cairo_surface_t *
+_cairo_beos_surface_create_similar (void            *abstract_surface,
+				    cairo_content_t  content,
+				    int              width,
+				    int              height)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+
+    if (width <= 0)
+	width = 1;
+    if (height <= 0)
+	height = 1;
+
+    BRect rect(0.0, 0.0, width - 1, height - 1);
+    BBitmap* bmp;
+    switch (content) {
+	case CAIRO_CONTENT_ALPHA:
+	    return NULL;
+	case CAIRO_CONTENT_COLOR_ALPHA:
+	    bmp = new BBitmap(rect, B_RGBA32, true);
+	    break;
+	case CAIRO_CONTENT_COLOR:
+	    // Match the color depth
+	    if (surface->bitmap) {
+		color_space space = surface->bitmap->ColorSpace();
+		// No alpha was requested -> make sure not to return
+		// a surface with alpha
+		if (space == B_RGBA32)
+		    space = B_RGB32;
+		if (space == B_RGBA15)
+		    space = B_RGB15;
+		bmp = new BBitmap(rect, space, true);
+	    } else {
+		BScreen scr(surface->view->Window());
+		color_space space = B_RGB32;
+		if (scr.IsValid())
+		    space = scr.ColorSpace();
+		bmp = new BBitmap(rect, space, true);
+	    }
+	    break;
+	default:
+	    ASSERT_NOT_REACHED;
+	    return NULL;
+    }
+    BView* view = new BView(rect, "Cairo bitmap view", B_FOLLOW_ALL_SIDES, 0);
+    bmp->AddChild(view);
+    return _cairo_beos_surface_create_internal(view, bmp, true);
+}
+
+static cairo_status_t
+_cairo_beos_surface_finish (void *abstract_surface)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+    if (surface->owns_bitmap_view) {
+	if (surface->bitmap)
+	    surface->bitmap->RemoveChild(surface->view);
+
+	delete surface->view;
+	delete surface->bitmap;
+
+	surface->view = NULL;
+	surface->bitmap = NULL;
+    }
+
+    cairo_region_destroy (surface->clip_region);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_beos_surface_acquire_source_image (void                   *abstract_surface,
+					  cairo_image_surface_t **image_out,
+					  void                  **image_extra)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+    AutoLockView locker(surface->view);
+    if (!locker)
+	return CAIRO_STATUS_NO_MEMORY; /// XXX not exactly right, but what can we do?
+
+
+    surface->view->Sync();
+
+    if (surface->bitmap) {
+	*image_out = _cairo_beos_bitmap_to_surface (surface->bitmap);
+	if (unlikely ((*image_out)->base.status))
+	    return (*image_out)->base.status;
+
+	*image_extra = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    BBitmap* bmp;
+    if (_cairo_beos_view_to_bitmap(surface->view, &bmp) != OK)
+	return CAIRO_STATUS_NO_MEMORY; /// XXX incorrect if the error was NOT_VISIBLE
+
+    *image_out = _cairo_beos_bitmap_to_surface (bmp);
+    if (unlikely ((*image_out)->base.status)) {
+	delete bmp;
+	return (*image_out)->base.status;
+    }
+    *image_extra = bmp;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_beos_surface_release_source_image (void                  *abstract_surface,
+					  cairo_image_surface_t *image,
+					  void                  *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+
+    if (image_extra != NULL) {
+	BBitmap* bmp = static_cast<BBitmap*>(image_extra);
+	delete bmp;
+    }
+}
+
+static cairo_status_t
+_cairo_beos_surface_acquire_dest_image (void			 *abstract_surface,
+                                        cairo_rectangle_int_t	 *interest_rect,
+                                        cairo_image_surface_t	**image_out,
+                                        cairo_rectangle_int_t	 *image_rect,
+                                        void			**image_extra)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+
+    AutoLockView locker(surface->view);
+    if (!locker) {
+	*image_out = NULL;
+	*image_extra = NULL;
+	return (cairo_status_t) CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    if (surface->bitmap) {
+	surface->view->Sync();
+	*image_out = _cairo_beos_bitmap_to_surface(surface->bitmap);
+	if (unlikely ((*image_out)->base.status))
+	    return (*image_out)->base.status;
+
+	image_rect->x = 0;
+	image_rect->y = 0;
+	image_rect->width = (*image_out)->width;
+	image_rect->height = (*image_out)->height;
+
+	*image_extra = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    BRect b_interest_rect (_cairo_rectangle_to_brect (interest_rect));
+
+    BRect rect;
+    BBitmap* bitmap;
+    ViewCopyStatus status = _cairo_beos_view_to_bitmap(surface->view, &bitmap,
+	                                               &rect, &b_interest_rect);
+    if (status == NOT_VISIBLE) {
+	*image_out = NULL;
+	*image_extra = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+    if (status == ERROR)
+	return CAIRO_STATUS_NO_MEMORY;
+
+    *image_rect = _brect_to_cairo_rectangle(rect);
+    *image_out = _cairo_beos_bitmap_to_surface(bitmap);
+    delete bitmap;
+    if (unlikely ((*image_out)->base.status))
+	return (*image_out)->base.status;
+
+    *image_extra = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+static void
+_cairo_beos_surface_release_dest_image (void			*abstract_surface,
+                                        cairo_rectangle_int_t	*intersect_rect,
+                                        cairo_image_surface_t	*image,
+                                        cairo_rectangle_int_t	*image_rect,
+                                        void			*image_extra)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+
+    AutoLockView locker(surface->view);
+    if (!locker)
+	return;
+
+    BBitmap* bitmap_to_draw = _cairo_image_surface_to_bitmap(image);
+    surface->view->PushState();
+
+	surface->view->SetDrawingMode(B_OP_COPY);
+
+	surface->view->DrawBitmap (bitmap_to_draw,
+				   _cairo_rectangle_to_brect (image_rect));
+
+    surface->view->PopState();
+
+    delete bitmap_to_draw;
+    cairo_surface_destroy(&image->base);
+}
+
+static cairo_int_status_t
+_cairo_beos_surface_composite (cairo_operator_t		op,
+			       cairo_pattern_t	       *src,
+			       cairo_pattern_t	       *mask,
+			       void		       *dst,
+			       int			src_x,
+			       int			src_y,
+			       int			mask_x,
+			       int			mask_y,
+			       int			dst_x,
+			       int			dst_y,
+			       unsigned int		width,
+			       unsigned int		height,
+			       cairo_region_t		*clip_region)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							dst);
+    cairo_int_status_t status;
+    AutoLockView locker(surface->view);
+    if (!locker)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    drawing_mode mode;
+    if (!_cairo_op_to_be_op(op, &mode))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    // XXX Masks are not yet supported
+    if (mask)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    // XXX should eventually support the others
+    if (src->type != CAIRO_PATTERN_TYPE_SURFACE ||
+	src->extend != CAIRO_EXTEND_NONE)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    // Can we maybe support other matrices as well? (scale? if the filter is right)
+    int itx, ity;
+    if (!_cairo_matrix_is_integer_translation(&src->matrix, &itx, &ity))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_beos_surface_set_clip_region (surface, clip_region);
+    if (unlikely (status))
+	return status;
+
+    BRect srcRect(src_x + itx,
+		  src_y + ity,
+		  src_x + itx + width - 1,
+		  src_y + ity + height - 1);
+    BRect dstRect(dst_x, dst_y, dst_x + width - 1, dst_y + height - 1);
+
+    cairo_surface_t* src_surface = reinterpret_cast<cairo_surface_pattern_t*>(src)->
+					surface;
+
+    // Get a bitmap
+    BBitmap* bmp = NULL;
+    bool free_bmp = false;
+    if (_cairo_surface_is_image(src_surface)) {
+	cairo_image_surface_t* img_surface =
+	    reinterpret_cast<cairo_image_surface_t*>(src_surface);
+
+	bmp = _cairo_image_surface_to_bitmap(img_surface);
+	free_bmp = true;
+    } else if (src_surface->backend == surface->base.backend) {
+	cairo_beos_surface_t *beos_surface =
+	    reinterpret_cast<cairo_beos_surface_t*>(src_surface);
+	if (beos_surface->bitmap) {
+	    AutoLockView locker(beos_surface->view);
+	    if (locker)
+		beos_surface->view->Sync();
+	    bmp = beos_surface->bitmap;
+	} else {
+	    _cairo_beos_view_to_bitmap(surface->view, &bmp);
+	    free_bmp = true;
+	}
+    }
+
+    if (!bmp)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    // So, BeOS seems to screw up painting an opaque bitmap onto a
+    // translucent one (it makes them partly transparent). Just return
+    // unsupported.
+    if (bmp->ColorSpace() == B_RGB32 && surface->bitmap &&
+	surface->bitmap->ColorSpace() == B_RGBA32 &&
+	(mode == B_OP_COPY || mode == B_OP_ALPHA))
+    {
+	if (free_bmp)
+	    delete bmp;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    // Draw it on screen.
+    surface->view->PushState();
+
+	// If our image rect is only a subrect of the desired size, and we
+	// aren't using B_OP_ALPHA, then we need to fill the rect first.
+	if (mode == B_OP_COPY && !bmp->Bounds().Contains(srcRect)) {
+	    rgb_color black = { 0, 0, 0, 0 };
+
+	    surface->view->SetDrawingMode(mode);
+	    surface->view->SetHighColor(black);
+	    surface->view->FillRect(dstRect);
+	}
+
+	if (mode == B_OP_ALPHA && bmp->ColorSpace() == B_RGB32) {
+	    mode = B_OP_COPY;
+	}
+	surface->view->SetDrawingMode(mode);
+
+	if (surface->bitmap && surface->bitmap->ColorSpace() == B_RGBA32)
+	    surface->view->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_COMPOSITE);
+	else
+	    surface->view->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_OVERLAY);
+
+	surface->view->DrawBitmap(bmp, srcRect, dstRect);
+
+    surface->view->PopState();
+
+    if (free_bmp)
+	delete bmp;
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+
+static cairo_int_status_t
+_cairo_beos_surface_fill_rectangles (void			*abstract_surface,
+				     cairo_operator_t		 op,
+				     const cairo_color_t	*color,
+				     cairo_rectangle_int_t	*rects,
+				     int			 num_rects,
+				     cairo_region_t		*clip_region)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+    cairo_int_status_t status;
+
+    if (num_rects <= 0)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    AutoLockView locker(surface->view);
+    if (!locker)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    drawing_mode mode;
+    if (!_cairo_op_to_be_op(op, &mode))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_beos_surface_set_clip_region (surface, clip_region);
+    if (unlikely (status))
+	return status;
+
+    rgb_color be_color = _cairo_color_to_be_color(color);
+
+    if (mode == B_OP_ALPHA && be_color.alpha == 0xFF)
+	mode = B_OP_COPY;
+
+    // For CAIRO_OPERATOR_SOURCE, cairo expects us to use the premultiplied
+    // color info. This is only relevant when drawing into an rgb24 buffer
+    // (as for others, we can convert when asked for the image)
+    if (mode == B_OP_COPY && be_color.alpha != 0xFF &&
+	(!surface->bitmap || surface->bitmap->ColorSpace() != B_RGBA32))
+    {
+	be_color.red   = color->red_short  >> 8;
+	be_color.green = color->green_short >> 8;
+	be_color.blue  = color->blue_short  >> 8;
+    }
+
+    surface->view->PushState();
+
+	surface->view->SetDrawingMode(mode);
+	surface->view->SetHighColor(be_color);
+	if (surface->bitmap && surface->bitmap->ColorSpace() == B_RGBA32)
+	    surface->view->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_COMPOSITE);
+	else
+	    surface->view->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_OVERLAY);
+
+	for (int i = 0; i < num_rects; ++i)
+	    surface->view->FillRect (_cairo_rectangle_to_brect (&rects[i]));
+
+    surface->view->PopState();
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_beos_surface_get_extents (void				*abstract_surface,
+				 cairo_rectangle_int_t	*rectangle)
+{
+    cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>(
+							abstract_surface);
+    AutoLockView locker(surface->view);
+    if (!locker)
+	return FALSE;
+
+    *rectangle = _brect_to_cairo_rectangle (surface->view->Bounds());
+    return TRUE;
+}
+
+static const struct _cairo_surface_backend cairo_beos_surface_backend = {
+    CAIRO_SURFACE_TYPE_BEOS,
+    _cairo_beos_surface_create_similar,
+    _cairo_beos_surface_finish,
+    _cairo_beos_surface_acquire_source_image,
+    _cairo_beos_surface_release_source_image,
+    _cairo_beos_surface_acquire_dest_image,
+    _cairo_beos_surface_release_dest_image,
+    NULL, /* clone_similar */
+    _cairo_beos_surface_composite, /* composite */
+    _cairo_beos_surface_fill_rectangles,
+    NULL, /* composite_trapezoids */
+    NULL, /* create_span_renderer */
+    NULL, /* check_span_renderer */
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_beos_surface_get_extents,
+    NULL,  /* old_show_glyphs */
+    NULL, /* get_font_options */
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+    NULL, /* scaled_font_fini */
+    NULL, /* scaled_glyph_fini */
+
+    NULL, /* paint */
+    NULL, /* mask */
+    NULL, /* stroke */
+    NULL, /* fill */
+    NULL  /* show_glyphs */
+};
+
+static cairo_surface_t *
+_cairo_beos_surface_create_internal (BView*   view,
+				     BBitmap* bmp,
+				     bool     owns_bitmap_view)
+{
+    // Must use malloc, because cairo code will use free() on the surface
+    cairo_beos_surface_t *surface = static_cast<cairo_beos_surface_t*>(
+					malloc(sizeof(cairo_beos_surface_t)));
+    if (surface == NULL) {
+	_cairo_error (CAIRO_STATUS_NO_MEMORY);
+        return const_cast<cairo_surface_t*>(&_cairo_surface_nil);
+    }
+
+    cairo_content_t content = CAIRO_CONTENT_COLOR;
+    if (bmp && (bmp->ColorSpace() == B_RGBA32 || bmp->ColorSpace() == B_RGBA15))
+	content = CAIRO_CONTENT_COLOR_ALPHA;
+    _cairo_surface_init (&surface->base,
+			 &cairo_beos_surface_backend,
+			 NULL, /* device */
+			 content);
+
+    surface->view = view;
+    surface->bitmap = bmp;
+    surface->owns_bitmap_view = owns_bitmap_view;
+
+    surface->clip_region = NULL;
+
+    return &surface->base;
+}
+
+/**
+ * cairo_beos_surface_create:
+ * @view: The view to draw on
+ *
+ * Creates a Cairo surface that draws onto a BeOS BView.
+ * The caller must ensure that the view does not get deleted before the surface.
+ * If the view is attached to a bitmap rather than an on-screen window, use
+ * cairo_beos_surface_create_for_bitmap() instead of this function.
+ *
+ * Since: TBD
+ **/
+cairo_surface_t *
+cairo_beos_surface_create (BView* view)
+{
+    return cairo_beos_surface_create_for_bitmap(view, NULL);
+}
+
+/**
+ * cairo_beos_surface_create_for_bitmap:
+ * @view: The view to draw on
+ * @bmp: The bitmap to which the view is attached
+ *
+ * Creates a Cairo surface that draws onto a BeOS BView which is attached to a
+ * BBitmap.
+ * The caller must ensure that the view and the bitmap do not get deleted
+ * before the surface.
+ *
+ * For views that draw to a bitmap (as opposed to a screen), use this function
+ * rather than cairo_beos_surface_create(). Not using this function WILL lead to
+ * incorrect behaviour.
+ *
+ * For now, only views that draw to the entire area of bmp are supported.
+ * The view must already be attached to the bitmap.
+ *
+ * Since: TBD
+ **/
+cairo_surface_t *
+cairo_beos_surface_create_for_bitmap (BView*   view,
+				      BBitmap* bmp)
+{
+    return _cairo_beos_surface_create_internal(view, bmp);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-beos.h b/libs/cairo-1.16.0/src/cairo-beos.h
new file mode 100644
index 0000000..fdb89a6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-beos.h
@@ -0,0 +1,60 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Christian Biesinger <cbiesinger@web.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Christian Biesinger
+ * <cbiesinger@web.de>
+ *
+ * Contributor(s):
+ */
+
+#ifndef CAIRO_BEOS_H
+#define CAIRO_BEOS_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_BEOS_SURFACE
+
+#include <View.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_beos_surface_create (BView* view);
+
+cairo_public cairo_surface_t *
+cairo_beos_surface_create_for_bitmap (BView*   view,
+				      BBitmap* bmp);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_BEOS_SURFACE */
+# error Cairo was not compiled with support for the beos backend
+#endif /* CAIRO_HAS_BEOS_SURFACE */
+
+#endif /* CAIRO_BEOS_H */
diff --git a/libs/cairo-1.16.0/src/cairo-botor-scan-converter.c b/libs/cairo-1.16.0/src/cairo-botor-scan-converter.c
new file mode 100644
index 0000000..438f96b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-botor-scan-converter.c
@@ -0,0 +1,2202 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2007 David Turner
+ * Copyright © 2008 M Joonas Pihlaja
+ * Copyright © 2008 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      M Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-freelist-private.h"
+#include "cairo-combsort-inline.h"
+
+#include <setjmp.h>
+
+#define STEP_X CAIRO_FIXED_ONE
+#define STEP_Y CAIRO_FIXED_ONE
+#define UNROLL3(x) x x x
+
+#define STEP_XY (2*STEP_X*STEP_Y) /* Unit area in the step. */
+#define AREA_TO_ALPHA(c)  (((c)*255 + STEP_XY/2) / STEP_XY)
+
+typedef struct _cairo_bo_intersect_ordinate {
+    int32_t ordinate;
+    enum { EXACT, INEXACT } exactness;
+} cairo_bo_intersect_ordinate_t;
+
+typedef struct _cairo_bo_intersect_point {
+    cairo_bo_intersect_ordinate_t x;
+    cairo_bo_intersect_ordinate_t y;
+} cairo_bo_intersect_point_t;
+
+struct quorem {
+    cairo_fixed_t quo;
+    cairo_fixed_t rem;
+};
+
+struct run {
+    struct run *next;
+    int sign;
+    cairo_fixed_t y;
+};
+
+typedef struct edge {
+    cairo_list_t link;
+
+    cairo_edge_t edge;
+
+    /* Current x coordinate and advancement.
+     * Initialised to the x coordinate of the top of the
+     * edge. The quotient is in cairo_fixed_t units and the
+     * remainder is mod dy in cairo_fixed_t units.
+     */
+    cairo_fixed_t dy;
+    struct quorem x;
+    struct quorem dxdy;
+    struct quorem dxdy_full;
+
+    cairo_bool_t vertical;
+    unsigned int flags;
+
+    int current_sign;
+    struct run *runs;
+} edge_t;
+
+enum {
+    START = 0x1,
+    STOP = 0x2,
+};
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef enum {
+    EVENT_TYPE_STOP,
+    EVENT_TYPE_INTERSECTION,
+    EVENT_TYPE_START
+} event_type_t;
+
+typedef struct _event {
+    cairo_fixed_t y;
+    event_type_t type;
+} event_t;
+
+typedef struct _start_event {
+    cairo_fixed_t y;
+    event_type_t type;
+    edge_t *edge;
+} start_event_t;
+
+typedef struct _queue_event {
+    cairo_fixed_t y;
+    event_type_t type;
+    edge_t *e1;
+    edge_t *e2;
+} queue_event_t;
+
+typedef struct _pqueue {
+    int size, max_size;
+
+    event_t **elements;
+    event_t *elements_embedded[1024];
+} pqueue_t;
+
+struct cell {
+    struct cell	*prev;
+    struct cell	*next;
+    int		 x;
+    int		 uncovered_area;
+    int		 covered_height;
+};
+
+typedef struct _sweep_line {
+    cairo_list_t active;
+    cairo_list_t stopped;
+    cairo_list_t *insert_cursor;
+    cairo_bool_t is_vertical;
+
+    cairo_fixed_t current_row;
+    cairo_fixed_t current_subrow;
+
+    struct coverage {
+	struct cell head;
+	struct cell tail;
+
+	struct cell *cursor;
+	int count;
+
+	cairo_freepool_t pool;
+    } coverage;
+
+    struct event_queue {
+	pqueue_t pq;
+	event_t **start_events;
+
+	cairo_freepool_t pool;
+    } queue;
+
+    cairo_freepool_t runs;
+
+    jmp_buf unwind;
+} sweep_line_t;
+
+cairo_always_inline static struct quorem
+floored_divrem (int a, int b)
+{
+    struct quorem qr;
+    qr.quo = a/b;
+    qr.rem = a%b;
+    if ((a^b)<0 && qr.rem) {
+	qr.quo--;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+static struct quorem
+floored_muldivrem(int x, int a, int b)
+{
+    struct quorem qr;
+    long long xa = (long long)x*a;
+    qr.quo = xa/b;
+    qr.rem = xa%b;
+    if ((xa>=0) != (b>=0) && qr.rem) {
+	qr.quo--;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+static cairo_fixed_t
+line_compute_intersection_x_for_y (const cairo_line_t *line,
+				   cairo_fixed_t y)
+{
+    cairo_fixed_t x, dy;
+
+    if (y == line->p1.y)
+	return line->p1.x;
+    if (y == line->p2.y)
+	return line->p2.x;
+
+    x = line->p1.x;
+    dy = line->p2.y - line->p1.y;
+    if (dy != 0) {
+	x += _cairo_fixed_mul_div_floor (y - line->p1.y,
+					 line->p2.x - line->p1.x,
+					 dy);
+    }
+
+    return x;
+}
+
+/*
+ * We need to compare the x-coordinates of a pair of lines for a particular y,
+ * without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ B_x + (Y - B_y) * B_dx / B_dy,
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy and B_dy (and (Y - A_y), (Y - B_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   A_dy * B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx * A_dy
+ *                                 - (Y - A_y) * A_dx * B_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 128 bit arithmetic. For certain, but common,
+ * input we can reduce this down to a single 32 bit compare by inspecting the
+ * deltas.
+ *
+ * (And put the burden of the work on developing fast 128 bit ops, which are
+ * required throughout the tessellator.)
+ *
+ * See the similar discussion for _slope_compare().
+ */
+static int
+edges_compare_x_for_y_general (const cairo_edge_t *a,
+			       const cairo_edge_t *b,
+			       int32_t y)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t dx;
+    int32_t adx, ady;
+    int32_t bdx, bdy;
+    enum {
+       HAVE_NONE    = 0x0,
+       HAVE_DX      = 0x1,
+       HAVE_ADX     = 0x2,
+       HAVE_DX_ADX  = HAVE_DX | HAVE_ADX,
+       HAVE_BDX     = 0x4,
+       HAVE_DX_BDX  = HAVE_DX | HAVE_BDX,
+       HAVE_ADX_BDX = HAVE_ADX | HAVE_BDX,
+       HAVE_ALL     = HAVE_DX | HAVE_ADX | HAVE_BDX
+    } have_dx_adx_bdx = HAVE_ALL;
+
+    /* don't bother solving for abscissa if the edges' bounding boxes
+     * can be used to order them. */
+    {
+           int32_t amin, amax;
+           int32_t bmin, bmax;
+           if (a->line.p1.x < a->line.p2.x) {
+                   amin = a->line.p1.x;
+                   amax = a->line.p2.x;
+           } else {
+                   amin = a->line.p2.x;
+                   amax = a->line.p1.x;
+           }
+           if (b->line.p1.x < b->line.p2.x) {
+                   bmin = b->line.p1.x;
+                   bmax = b->line.p2.x;
+           } else {
+                   bmin = b->line.p2.x;
+                   bmax = b->line.p1.x;
+           }
+           if (amax < bmin) return -1;
+           if (amin > bmax) return +1;
+    }
+
+    ady = a->line.p2.y - a->line.p1.y;
+    adx = a->line.p2.x - a->line.p1.x;
+    if (adx == 0)
+	have_dx_adx_bdx &= ~HAVE_ADX;
+
+    bdy = b->line.p2.y - b->line.p1.y;
+    bdx = b->line.p2.x - b->line.p1.x;
+    if (bdx == 0)
+	have_dx_adx_bdx &= ~HAVE_BDX;
+
+    dx = a->line.p1.x - b->line.p1.x;
+    if (dx == 0)
+	have_dx_adx_bdx &= ~HAVE_DX;
+
+#define L _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (ady, bdy), dx)
+#define A _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (adx, bdy), y - a->line.p1.y)
+#define B _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (bdx, ady), y - b->line.p1.y)
+    switch (have_dx_adx_bdx) {
+    default:
+    case HAVE_NONE:
+	return 0;
+    case HAVE_DX:
+	/* A_dy * B_dy * (A_x - B_x) ∘ 0 */
+	return dx; /* ady * bdy is positive definite */
+    case HAVE_ADX:
+	/* 0 ∘  - (Y - A_y) * A_dx * B_dy */
+	return adx; /* bdy * (y - a->top.y) is positive definite */
+    case HAVE_BDX:
+	/* 0 ∘ (Y - B_y) * B_dx * A_dy */
+	return -bdx; /* ady * (y - b->top.y) is positive definite */
+    case HAVE_ADX_BDX:
+	/*  0 ∘ (Y - B_y) * B_dx * A_dy - (Y - A_y) * A_dx * B_dy */
+	if ((adx ^ bdx) < 0) {
+	    return adx;
+	} else if (a->line.p1.y == b->line.p1.y) { /* common origin */
+	    cairo_int64_t adx_bdy, bdx_ady;
+
+	    /* ∴ A_dx * B_dy ∘ B_dx * A_dy */
+
+	    adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	    bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	    return _cairo_int64_cmp (adx_bdy, bdx_ady);
+	} else
+	    return _cairo_int128_cmp (A, B);
+    case HAVE_DX_ADX:
+	/* A_dy * (A_x - B_x) ∘ - (Y - A_y) * A_dx */
+	if ((-adx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t ady_dx, dy_adx;
+
+	    ady_dx = _cairo_int32x32_64_mul (ady, dx);
+	    dy_adx = _cairo_int32x32_64_mul (a->line.p1.y - y, adx);
+
+	    return _cairo_int64_cmp (ady_dx, dy_adx);
+	}
+    case HAVE_DX_BDX:
+	/* B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx */
+	if ((bdx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t bdy_dx, dy_bdx;
+
+	    bdy_dx = _cairo_int32x32_64_mul (bdy, dx);
+	    dy_bdx = _cairo_int32x32_64_mul (y - b->line.p1.y, bdx);
+
+	    return _cairo_int64_cmp (bdy_dx, dy_bdx);
+	}
+    case HAVE_ALL:
+	/* XXX try comparing (a->line.p2.x - b->line.p2.x) et al */
+	return _cairo_int128_cmp (L, _cairo_int128_sub (B, A));
+    }
+#undef B
+#undef A
+#undef L
+}
+
+/*
+ * We need to compare the x-coordinate of a line for a particular y wrt to a
+ * given x, without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ X
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy (and (Y - A_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   (Y - A_y) * A_dx ∘ (X - A_x) * A_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 64 bit arithmetic.
+ *
+ * See the similar discussion for _slope_compare() and
+ * edges_compare_x_for_y_general().
+ */
+static int
+edge_compare_for_y_against_x (const cairo_edge_t *a,
+			      int32_t y,
+			      int32_t x)
+{
+    int32_t adx, ady;
+    int32_t dx, dy;
+    cairo_int64_t L, R;
+
+    if (a->line.p1.x <= a->line.p2.x) {
+	if (x < a->line.p1.x)
+	    return 1;
+	if (x > a->line.p2.x)
+	    return -1;
+    } else {
+	if (x < a->line.p2.x)
+	    return 1;
+	if (x > a->line.p1.x)
+	    return -1;
+    }
+
+    adx = a->line.p2.x - a->line.p1.x;
+    dx = x - a->line.p1.x;
+
+    if (adx == 0)
+	return -dx;
+    if (dx == 0 || (adx ^ dx) < 0)
+	return adx;
+
+    dy = y - a->line.p1.y;
+    ady = a->line.p2.y - a->line.p1.y;
+
+    L = _cairo_int32x32_64_mul (dy, adx);
+    R = _cairo_int32x32_64_mul (dx, ady);
+
+    return _cairo_int64_cmp (L, R);
+}
+
+static int
+edges_compare_x_for_y (const cairo_edge_t *a,
+		       const cairo_edge_t *b,
+		       int32_t y)
+{
+    /* If the sweep-line is currently on an end-point of a line,
+     * then we know its precise x value (and considering that we often need to
+     * compare events at end-points, this happens frequently enough to warrant
+     * special casing).
+     */
+    enum {
+       HAVE_NEITHER = 0x0,
+       HAVE_AX      = 0x1,
+       HAVE_BX      = 0x2,
+       HAVE_BOTH    = HAVE_AX | HAVE_BX
+    } have_ax_bx = HAVE_BOTH;
+    int32_t ax = 0, bx = 0;
+
+    /* XXX given we have x and dx? */
+
+    if (y == a->line.p1.y)
+	ax = a->line.p1.x;
+    else if (y == a->line.p2.y)
+	ax = a->line.p2.x;
+    else
+	have_ax_bx &= ~HAVE_AX;
+
+    if (y == b->line.p1.y)
+	bx = b->line.p1.x;
+    else if (y == b->line.p2.y)
+	bx = b->line.p2.x;
+    else
+	have_ax_bx &= ~HAVE_BX;
+
+    switch (have_ax_bx) {
+    default:
+    case HAVE_NEITHER:
+	return edges_compare_x_for_y_general (a, b, y);
+    case HAVE_AX:
+	return -edge_compare_for_y_against_x (b, y, ax);
+    case HAVE_BX:
+	return edge_compare_for_y_against_x (a, y, bx);
+    case HAVE_BOTH:
+	return ax - bx;
+    }
+}
+
+static inline int
+slope_compare (const edge_t *a,
+	       const edge_t *b)
+{
+    cairo_int64_t L, R;
+    int cmp;
+
+    cmp = a->dxdy.quo - b->dxdy.quo;
+    if (cmp)
+	return cmp;
+
+    if (a->dxdy.rem == 0)
+	return -b->dxdy.rem;
+    if (b->dxdy.rem == 0)
+	return a->dxdy.rem;
+
+    L = _cairo_int32x32_64_mul (b->dy, a->dxdy.rem);
+    R = _cairo_int32x32_64_mul (a->dy, b->dxdy.rem);
+    return _cairo_int64_cmp (L, R);
+}
+
+static inline int
+line_equal (const cairo_line_t *a, const cairo_line_t *b)
+{
+    return a->p1.x == b->p1.x && a->p1.y == b->p1.y &&
+           a->p2.x == b->p2.x && a->p2.y == b->p2.y;
+}
+
+static inline int
+sweep_line_compare_edges (const edge_t	*a,
+			  const edge_t	*b,
+			  cairo_fixed_t y)
+{
+    int cmp;
+
+    if (line_equal (&a->edge.line, &b->edge.line))
+	return 0;
+
+    cmp = edges_compare_x_for_y (&a->edge, &b->edge, y);
+    if (cmp)
+	return cmp;
+
+    return slope_compare (a, b);
+}
+
+static inline cairo_int64_t
+det32_64 (int32_t a, int32_t b,
+	  int32_t c, int32_t d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int64_sub (_cairo_int32x32_64_mul (a, d),
+			     _cairo_int32x32_64_mul (b, c));
+}
+
+static inline cairo_int128_t
+det64x32_128 (cairo_int64_t a, int32_t       b,
+	      cairo_int64_t c, int32_t       d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int128_sub (_cairo_int64x32_128_mul (a, d),
+			      _cairo_int64x32_128_mul (c, b));
+}
+
+/* Compute the intersection of two lines as defined by two edges. The
+ * result is provided as a coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection or
+ * %CAIRO_BO_STATUS_PARALLEL if the two lines are exactly parallel.
+ */
+static cairo_bool_t
+intersect_lines (const edge_t *a, const edge_t *b,
+		 cairo_bo_intersect_point_t	*intersection)
+{
+    cairo_int64_t a_det, b_det;
+
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm begins.
+     * What we're doing to mitigate this is to perform clamping in
+     * cairo_bo_tessellate_polygon().
+     */
+    int32_t dx1 = a->edge.line.p1.x - a->edge.line.p2.x;
+    int32_t dy1 = a->edge.line.p1.y - a->edge.line.p2.y;
+
+    int32_t dx2 = b->edge.line.p1.x - b->edge.line.p2.x;
+    int32_t dy2 = b->edge.line.p1.y - b->edge.line.p2.y;
+
+    cairo_int64_t den_det;
+    cairo_int64_t R;
+    cairo_quorem64_t qr;
+
+    den_det = det32_64 (dx1, dy1, dx2, dy2);
+
+     /* Q: Can we determine that the lines do not intersect (within range)
+      * much more cheaply than computing the intersection point i.e. by
+      * avoiding the division?
+      *
+      *   X = ax + t * adx = bx + s * bdx;
+      *   Y = ay + t * ady = by + s * bdy;
+      *   ∴ t * (ady*bdx - bdy*adx) = bdx * (by - ay) + bdy * (ax - bx)
+      *   => t * L = R
+      *
+      * Therefore we can reject any intersection (under the criteria for
+      * valid intersection events) if:
+      *   L^R < 0 => t < 0, or
+      *   L<R => t > 1
+      *
+      * (where top/bottom must at least extend to the line endpoints).
+      *
+      * A similar substitution can be performed for s, yielding:
+      *   s * (ady*bdx - bdy*adx) = ady * (ax - bx) - adx * (ay - by)
+      */
+    R = det32_64 (dx2, dy2,
+		  b->edge.line.p1.x - a->edge.line.p1.x,
+		  b->edge.line.p1.y - a->edge.line.p1.y);
+    if (_cairo_int64_negative (den_det)) {
+	if (_cairo_int64_ge (den_det, R))
+	    return FALSE;
+    } else {
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+    }
+
+    R = det32_64 (dy1, dx1,
+		  a->edge.line.p1.y - b->edge.line.p1.y,
+		  a->edge.line.p1.x - b->edge.line.p1.x);
+    if (_cairo_int64_negative (den_det)) {
+	if (_cairo_int64_ge (den_det, R))
+	    return FALSE;
+    } else {
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+    }
+
+    /* We now know that the two lines should intersect within range. */
+
+    a_det = det32_64 (a->edge.line.p1.x, a->edge.line.p1.y,
+		      a->edge.line.p2.x, a->edge.line.p2.y);
+    b_det = det32_64 (b->edge.line.p1.x, b->edge.line.p1.y,
+		      b->edge.line.p2.x, b->edge.line.p2.y);
+
+    /* x = det (a_det, dx1, b_det, dx2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dx1,
+						       b_det, dx2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+#if 0
+    intersection->x.exactness = _cairo_int64_is_zero (qr.rem) ? EXACT : INEXACT;
+#else
+    intersection->x.exactness = EXACT;
+    if (! _cairo_int64_is_zero (qr.rem)) {
+	if (_cairo_int64_negative (den_det) ^ _cairo_int64_negative (qr.rem))
+	    qr.rem = _cairo_int64_negate (qr.rem);
+	qr.rem = _cairo_int64_mul (qr.rem, _cairo_int32_to_int64 (2));
+	if (_cairo_int64_ge (qr.rem, den_det)) {
+	    qr.quo = _cairo_int64_add (qr.quo,
+				       _cairo_int32_to_int64 (_cairo_int64_negative (qr.quo) ? -1 : 1));
+	} else
+	    intersection->x.exactness = INEXACT;
+    }
+#endif
+    intersection->x.ordinate = _cairo_int64_to_int32 (qr.quo);
+
+    /* y = det (a_det, dy1, b_det, dy2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dy1,
+						       b_det, dy2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+#if 0
+    intersection->y.exactness = _cairo_int64_is_zero (qr.rem) ? EXACT : INEXACT;
+#else
+    intersection->y.exactness = EXACT;
+    if (! _cairo_int64_is_zero (qr.rem)) {
+	/* compute ceiling away from zero */
+	qr.quo = _cairo_int64_add (qr.quo,
+				   _cairo_int32_to_int64 (_cairo_int64_negative (qr.quo) ? -1 : 1));
+	intersection->y.exactness = INEXACT;
+    }
+#endif
+    intersection->y.ordinate = _cairo_int64_to_int32 (qr.quo);
+
+    return TRUE;
+}
+
+static int
+bo_intersect_ordinate_32_compare (int32_t a, int32_t b, int exactness)
+{
+    int cmp;
+
+    /* First compare the quotient */
+    cmp = a - b;
+    if (cmp)
+	return cmp;
+
+    /* With quotient identical, if remainder is 0 then compare equal */
+    /* Otherwise, the non-zero remainder makes a > b */
+    return -(INEXACT == exactness);
+}
+
+/* Does the given edge contain the given point. The point must already
+ * be known to be contained within the line determined by the edge,
+ * (most likely the point results from an intersection of this edge
+ * with another).
+ *
+ * If we had exact arithmetic, then this function would simply be a
+ * matter of examining whether the y value of the point lies within
+ * the range of y values of the edge. But since intersection points
+ * are not exact due to being rounded to the nearest integer within
+ * the available precision, we must also examine the x value of the
+ * point.
+ *
+ * The definition of "contains" here is that the given intersection
+ * point will be seen by the sweep line after the start event for the
+ * given edge and before the stop event for the edge. See the comments
+ * in the implementation for more details.
+ */
+static cairo_bool_t
+bo_edge_contains_intersect_point (const edge_t			*edge,
+				  cairo_bo_intersect_point_t	*point)
+{
+    int cmp_top, cmp_bottom;
+
+    /* XXX: When running the actual algorithm, we don't actually need to
+     * compare against edge->top at all here, since any intersection above
+     * top is eliminated early via a slope comparison. We're leaving these
+     * here for now only for the sake of the quadratic-time intersection
+     * finder which needs them.
+     */
+
+    cmp_top = bo_intersect_ordinate_32_compare (point->y.ordinate,
+						edge->edge.top,
+						point->y.exactness);
+    if (cmp_top < 0)
+	return FALSE;
+
+    cmp_bottom = bo_intersect_ordinate_32_compare (point->y.ordinate,
+						   edge->edge.bottom,
+						   point->y.exactness);
+    if (cmp_bottom > 0)
+	return FALSE;
+
+    if (cmp_top > 0 && cmp_bottom < 0)
+	return TRUE;
+
+    /* At this stage, the point lies on the same y value as either
+     * edge->top or edge->bottom, so we have to examine the x value in
+     * order to properly determine containment. */
+
+    /* If the y value of the point is the same as the y value of the
+     * top of the edge, then the x value of the point must be greater
+     * to be considered as inside the edge. Similarly, if the y value
+     * of the point is the same as the y value of the bottom of the
+     * edge, then the x value of the point must be less to be
+     * considered as inside. */
+
+    if (cmp_top == 0) {
+	cairo_fixed_t top_x;
+
+	top_x = line_compute_intersection_x_for_y (&edge->edge.line,
+						   edge->edge.top);
+	return bo_intersect_ordinate_32_compare (top_x, point->x.ordinate, point->x.exactness) < 0;
+    } else { /* cmp_bottom == 0 */
+	cairo_fixed_t bot_x;
+
+	bot_x = line_compute_intersection_x_for_y (&edge->edge.line,
+						   edge->edge.bottom);
+	return bo_intersect_ordinate_32_compare (point->x.ordinate, bot_x, point->x.exactness) < 0;
+    }
+}
+
+static cairo_bool_t
+edge_intersect (const edge_t		*a,
+		const edge_t		*b,
+		cairo_point_t	*intersection)
+{
+    cairo_bo_intersect_point_t quorem;
+
+    if (! intersect_lines (a, b, &quorem))
+	return FALSE;
+
+    if (a->edge.top != a->edge.line.p1.y || a->edge.bottom != a->edge.line.p2.y) {
+	if (! bo_edge_contains_intersect_point (a, &quorem))
+	    return FALSE;
+    }
+
+    if (b->edge.top != b->edge.line.p1.y || b->edge.bottom != b->edge.line.p2.y) {
+	if (! bo_edge_contains_intersect_point (b, &quorem))
+	    return FALSE;
+    }
+
+    /* Now that we've correctly compared the intersection point and
+     * determined that it lies within the edge, then we know that we
+     * no longer need any more bits of storage for the intersection
+     * than we do for our edge coordinates. We also no longer need the
+     * remainder from the division. */
+    intersection->x = quorem.x.ordinate;
+    intersection->y = quorem.y.ordinate;
+
+    return TRUE;
+}
+
+static inline int
+event_compare (const event_t *a, const event_t *b)
+{
+    return a->y - b->y;
+}
+
+static void
+pqueue_init (pqueue_t *pq)
+{
+    pq->max_size = ARRAY_LENGTH (pq->elements_embedded);
+    pq->size = 0;
+
+    pq->elements = pq->elements_embedded;
+}
+
+static void
+pqueue_fini (pqueue_t *pq)
+{
+    if (pq->elements != pq->elements_embedded)
+	free (pq->elements);
+}
+
+static cairo_bool_t
+pqueue_grow (pqueue_t *pq)
+{
+    event_t **new_elements;
+    pq->max_size *= 2;
+
+    if (pq->elements == pq->elements_embedded) {
+	new_elements = _cairo_malloc_ab (pq->max_size,
+					 sizeof (event_t *));
+	if (unlikely (new_elements == NULL))
+	    return FALSE;
+
+	memcpy (new_elements, pq->elements_embedded,
+		sizeof (pq->elements_embedded));
+    } else {
+	new_elements = _cairo_realloc_ab (pq->elements,
+					  pq->max_size,
+					  sizeof (event_t *));
+	if (unlikely (new_elements == NULL))
+	    return FALSE;
+    }
+
+    pq->elements = new_elements;
+    return TRUE;
+}
+
+static inline void
+pqueue_push (sweep_line_t *sweep_line, event_t *event)
+{
+    event_t **elements;
+    int i, parent;
+
+    if (unlikely (sweep_line->queue.pq.size + 1 == sweep_line->queue.pq.max_size)) {
+	if (unlikely (! pqueue_grow (&sweep_line->queue.pq))) {
+	    longjmp (sweep_line->unwind,
+		     _cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    elements = sweep_line->queue.pq.elements;
+    for (i = ++sweep_line->queue.pq.size;
+	 i != PQ_FIRST_ENTRY &&
+	 event_compare (event,
+			elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = event;
+}
+
+static inline void
+pqueue_pop (pqueue_t *pq)
+{
+    event_t **elements = pq->elements;
+    event_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    event_compare (elements[child+1],
+			   elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (event_compare (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline void
+event_insert (sweep_line_t	*sweep_line,
+	      event_type_t	 type,
+	      edge_t		*e1,
+	      edge_t		*e2,
+	      cairo_fixed_t	 y)
+{
+    queue_event_t *event;
+
+    event = _cairo_freepool_alloc (&sweep_line->queue.pool);
+    if (unlikely (event == NULL)) {
+	longjmp (sweep_line->unwind,
+		 _cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    event->y = y;
+    event->type = type;
+    event->e1 = e1;
+    event->e2 = e2;
+
+    pqueue_push (sweep_line, (event_t *) event);
+}
+
+static void
+event_delete (sweep_line_t	*sweep_line,
+	      event_t		*event)
+{
+    _cairo_freepool_free (&sweep_line->queue.pool, event);
+}
+
+static inline event_t *
+event_next (sweep_line_t *sweep_line)
+{
+    event_t *event, *cmp;
+
+    event = sweep_line->queue.pq.elements[PQ_FIRST_ENTRY];
+    cmp = *sweep_line->queue.start_events;
+    if (event == NULL ||
+	(cmp != NULL && event_compare (cmp, event) < 0))
+    {
+	event = cmp;
+	sweep_line->queue.start_events++;
+    }
+    else
+    {
+	pqueue_pop (&sweep_line->queue.pq);
+    }
+
+    return event;
+}
+
+CAIRO_COMBSORT_DECLARE (start_event_sort, event_t *, event_compare)
+
+static inline void
+event_insert_stop (sweep_line_t	*sweep_line,
+		   edge_t	*edge)
+{
+    event_insert (sweep_line,
+		  EVENT_TYPE_STOP,
+		  edge, NULL,
+		  edge->edge.bottom);
+}
+
+static inline void
+event_insert_if_intersect_below_current_y (sweep_line_t	*sweep_line,
+					   edge_t	*left,
+					   edge_t	*right)
+{
+    cairo_point_t intersection;
+
+    /* start points intersect */
+    if (left->edge.line.p1.x == right->edge.line.p1.x &&
+	left->edge.line.p1.y == right->edge.line.p1.y)
+    {
+	return;
+    }
+
+    /* end points intersect, process DELETE events first */
+    if (left->edge.line.p2.x == right->edge.line.p2.x &&
+	left->edge.line.p2.y == right->edge.line.p2.y)
+    {
+	return;
+    }
+
+    if (slope_compare (left, right) <= 0)
+	return;
+
+    if (! edge_intersect (left, right, &intersection))
+	return;
+
+    event_insert (sweep_line,
+		  EVENT_TYPE_INTERSECTION,
+		  left, right,
+		  intersection.y);
+}
+
+static inline edge_t *
+link_to_edge (cairo_list_t *link)
+{
+    return (edge_t *) link;
+}
+
+static void
+sweep_line_insert (sweep_line_t	*sweep_line,
+		   edge_t	*edge)
+{
+    cairo_list_t *pos;
+    cairo_fixed_t y = sweep_line->current_subrow;
+
+    pos = sweep_line->insert_cursor;
+    if (pos == &sweep_line->active)
+	pos = sweep_line->active.next;
+    if (pos != &sweep_line->active) {
+	int cmp;
+
+	cmp = sweep_line_compare_edges (link_to_edge (pos),
+					edge,
+					y);
+	if (cmp < 0) {
+	    while (pos->next != &sweep_line->active &&
+		   sweep_line_compare_edges (link_to_edge (pos->next),
+					     edge,
+					     y) < 0)
+	    {
+		pos = pos->next;
+	    }
+	} else if (cmp > 0) {
+	    do {
+		pos = pos->prev;
+	    } while (pos != &sweep_line->active &&
+		     sweep_line_compare_edges (link_to_edge (pos),
+					       edge,
+					       y) > 0);
+	}
+    }
+    cairo_list_add (&edge->link, pos);
+    sweep_line->insert_cursor = &edge->link;
+}
+
+inline static void
+coverage_rewind (struct coverage *cells)
+{
+    cells->cursor = &cells->head;
+}
+
+static void
+coverage_init (struct coverage *cells)
+{
+    _cairo_freepool_init (&cells->pool,
+			  sizeof (struct cell));
+    cells->head.prev = NULL;
+    cells->head.next = &cells->tail;
+    cells->head.x = INT_MIN;
+    cells->tail.prev = &cells->head;
+    cells->tail.next = NULL;
+    cells->tail.x = INT_MAX;
+    cells->count = 0;
+    coverage_rewind (cells);
+}
+
+static void
+coverage_fini (struct coverage *cells)
+{
+    _cairo_freepool_fini (&cells->pool);
+}
+
+inline static void
+coverage_reset (struct coverage *cells)
+{
+    cells->head.next = &cells->tail;
+    cells->tail.prev = &cells->head;
+    cells->count = 0;
+    _cairo_freepool_reset (&cells->pool);
+    coverage_rewind (cells);
+}
+
+static struct cell *
+coverage_alloc (sweep_line_t *sweep_line,
+		struct cell *tail,
+		int x)
+{
+    struct cell *cell;
+
+    cell = _cairo_freepool_alloc (&sweep_line->coverage.pool);
+    if (unlikely (NULL == cell)) {
+	longjmp (sweep_line->unwind,
+		 _cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    tail->prev->next = cell;
+    cell->prev = tail->prev;
+    cell->next = tail;
+    tail->prev = cell;
+    cell->x = x;
+    cell->uncovered_area = 0;
+    cell->covered_height = 0;
+    sweep_line->coverage.count++;
+    return cell;
+}
+
+inline static struct cell *
+coverage_find (sweep_line_t *sweep_line, int x)
+{
+    struct cell *cell;
+
+    cell = sweep_line->coverage.cursor;
+    if (unlikely (cell->x > x)) {
+	do {
+	    if (cell->prev->x < x)
+		break;
+	    cell = cell->prev;
+	} while (TRUE);
+    } else {
+	if (cell->x == x)
+	    return cell;
+
+	do {
+	    UNROLL3({
+		    cell = cell->next;
+		    if (cell->x >= x)
+			break;
+		    });
+	} while (TRUE);
+    }
+
+    if (cell->x != x)
+	cell = coverage_alloc (sweep_line, cell, x);
+
+    return sweep_line->coverage.cursor = cell;
+}
+
+static void
+coverage_render_cells (sweep_line_t *sweep_line,
+		       cairo_fixed_t left, cairo_fixed_t right,
+		       cairo_fixed_t y1, cairo_fixed_t y2,
+		       int sign)
+{
+    int fx1, fx2;
+    int ix1, ix2;
+    int dx, dy;
+
+    /* Orient the edge left-to-right. */
+    dx = right - left;
+    if (dx >= 0) {
+	ix1 = _cairo_fixed_integer_part (left);
+	fx1 = _cairo_fixed_fractional_part (left);
+
+	ix2 = _cairo_fixed_integer_part (right);
+	fx2 = _cairo_fixed_fractional_part (right);
+
+	dy = y2 - y1;
+    } else {
+	ix1 = _cairo_fixed_integer_part (right);
+	fx1 = _cairo_fixed_fractional_part (right);
+
+	ix2 = _cairo_fixed_integer_part (left);
+	fx2 = _cairo_fixed_fractional_part (left);
+
+	dx = -dx;
+	sign = -sign;
+	dy = y1 - y2;
+	y1 = y2 - dy;
+	y2 = y1 + dy;
+    }
+
+    /* Add coverage for all pixels [ix1,ix2] on this row crossed
+     * by the edge. */
+    {
+	struct quorem y = floored_divrem ((STEP_X - fx1)*dy, dx);
+	struct cell *cell;
+
+	cell = sweep_line->coverage.cursor;
+	if (cell->x != ix1) {
+	    if (unlikely (cell->x > ix1)) {
+		do {
+		    if (cell->prev->x < ix1)
+			break;
+		    cell = cell->prev;
+		} while (TRUE);
+	    } else do {
+		UNROLL3({
+			if (cell->x >= ix1)
+			    break;
+			cell = cell->next;
+			});
+	    } while (TRUE);
+
+	    if (cell->x != ix1)
+		cell = coverage_alloc (sweep_line, cell, ix1);
+	}
+
+	cell->uncovered_area += sign * y.quo * (STEP_X + fx1);
+	cell->covered_height += sign * y.quo;
+	y.quo += y1;
+
+	cell = cell->next;
+	if (cell->x != ++ix1)
+	    cell = coverage_alloc (sweep_line, cell, ix1);
+	if (ix1 < ix2) {
+	    struct quorem dydx_full = floored_divrem (STEP_X*dy, dx);
+
+	    do {
+		cairo_fixed_t y_skip = dydx_full.quo;
+		y.rem += dydx_full.rem;
+		if (y.rem >= dx) {
+		    ++y_skip;
+		    y.rem -= dx;
+		}
+
+		y.quo += y_skip;
+
+		y_skip *= sign;
+		cell->covered_height += y_skip;
+		cell->uncovered_area += y_skip*STEP_X;
+
+		cell = cell->next;
+		if (cell->x != ++ix1)
+		    cell = coverage_alloc (sweep_line, cell, ix1);
+	    } while (ix1 != ix2);
+	}
+	cell->uncovered_area += sign*(y2 - y.quo)*fx2;
+	cell->covered_height += sign*(y2 - y.quo);
+	sweep_line->coverage.cursor = cell;
+    }
+}
+
+inline static void
+full_inc_edge (edge_t *edge)
+{
+    edge->x.quo += edge->dxdy_full.quo;
+    edge->x.rem += edge->dxdy_full.rem;
+    if (edge->x.rem >= 0) {
+	++edge->x.quo;
+	edge->x.rem -= edge->dy;
+    }
+}
+
+static void
+full_add_edge (sweep_line_t *sweep_line, edge_t *edge, int sign)
+{
+    struct cell *cell;
+    cairo_fixed_t x1, x2;
+    int ix1, ix2;
+    int frac;
+
+    edge->current_sign = sign;
+
+    ix1 = _cairo_fixed_integer_part (edge->x.quo);
+
+    if (edge->vertical) {
+	frac = _cairo_fixed_fractional_part (edge->x.quo);
+	cell = coverage_find (sweep_line, ix1);
+	cell->covered_height += sign * STEP_Y;
+	cell->uncovered_area += sign * 2 * frac * STEP_Y;
+	return;
+    }
+
+    x1 = edge->x.quo;
+    full_inc_edge (edge);
+    x2 = edge->x.quo;
+
+    ix2 = _cairo_fixed_integer_part (edge->x.quo);
+
+    /* Edge is entirely within a column? */
+    if (likely (ix1 == ix2)) {
+	frac = _cairo_fixed_fractional_part (x1) +
+	       _cairo_fixed_fractional_part (x2);
+	cell = coverage_find (sweep_line, ix1);
+	cell->covered_height += sign * STEP_Y;
+	cell->uncovered_area += sign * frac * STEP_Y;
+	return;
+    }
+
+    coverage_render_cells (sweep_line, x1, x2, 0, STEP_Y, sign);
+}
+
+static void
+full_nonzero (sweep_line_t *sweep_line)
+{
+    cairo_list_t *pos;
+
+    sweep_line->is_vertical = TRUE;
+    pos = sweep_line->active.next;
+    do {
+	edge_t *left = link_to_edge (pos), *right;
+	int winding = left->edge.dir;
+
+	sweep_line->is_vertical &= left->vertical;
+
+	pos = left->link.next;
+	do {
+	    if (unlikely (pos == &sweep_line->active)) {
+		full_add_edge (sweep_line, left, +1);
+		return;
+	    }
+
+	    right = link_to_edge (pos);
+	    pos = pos->next;
+	    sweep_line->is_vertical &= right->vertical;
+
+	    winding += right->edge.dir;
+	    if (0 == winding) {
+		if (pos == &sweep_line->active ||
+		    link_to_edge (pos)->x.quo != right->x.quo)
+		{
+		    break;
+		}
+	    }
+
+	    if (! right->vertical)
+		full_inc_edge (right);
+	} while (TRUE);
+
+	full_add_edge (sweep_line, left,  +1);
+	full_add_edge (sweep_line, right, -1);
+    } while (pos != &sweep_line->active);
+}
+
+static void
+full_evenodd (sweep_line_t *sweep_line)
+{
+    cairo_list_t *pos;
+
+    sweep_line->is_vertical = TRUE;
+    pos = sweep_line->active.next;
+    do {
+	edge_t *left = link_to_edge (pos), *right;
+	int winding = 0;
+
+	sweep_line->is_vertical &= left->vertical;
+
+	pos = left->link.next;
+	do {
+	    if (pos == &sweep_line->active) {
+		full_add_edge (sweep_line, left, +1);
+		return;
+	    }
+
+	    right = link_to_edge (pos);
+	    pos = pos->next;
+	    sweep_line->is_vertical &= right->vertical;
+
+	    if (++winding & 1) {
+		if (pos == &sweep_line->active ||
+		    link_to_edge (pos)->x.quo != right->x.quo)
+		{
+		    break;
+		}
+	    }
+
+	    if (! right->vertical)
+		full_inc_edge (right);
+	} while (TRUE);
+
+	full_add_edge (sweep_line, left,  +1);
+	full_add_edge (sweep_line, right, -1);
+    } while (pos != &sweep_line->active);
+}
+
+static void
+render_rows (cairo_botor_scan_converter_t *self,
+	     sweep_line_t *sweep_line,
+	     int y, int height,
+	     cairo_span_renderer_t *renderer)
+{
+    cairo_half_open_span_t spans_stack[CAIRO_STACK_ARRAY_LENGTH (cairo_half_open_span_t)];
+    cairo_half_open_span_t *spans = spans_stack;
+    struct cell *cell;
+    int prev_x, cover;
+    int num_spans;
+    cairo_status_t status;
+
+    if (unlikely (sweep_line->coverage.count == 0)) {
+	status = renderer->render_rows (renderer, y, height, NULL, 0);
+	if (unlikely (status))
+	    longjmp (sweep_line->unwind, status);
+	return;
+    }
+
+    /* Allocate enough spans for the row. */
+
+    num_spans = 2*sweep_line->coverage.count+2;
+    if (unlikely (num_spans > ARRAY_LENGTH (spans_stack))) {
+	spans = _cairo_malloc_ab (num_spans, sizeof (cairo_half_open_span_t));
+	if (unlikely (spans == NULL)) {
+	    longjmp (sweep_line->unwind,
+		     _cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    /* Form the spans from the coverage and areas. */
+    num_spans = 0;
+    prev_x = self->xmin;
+    cover = 0;
+    cell = sweep_line->coverage.head.next;
+    do {
+	int x = cell->x;
+	int area;
+
+	if (x > prev_x) {
+	    spans[num_spans].x = prev_x;
+	    spans[num_spans].inverse = 0;
+	    spans[num_spans].coverage = AREA_TO_ALPHA (cover);
+	    ++num_spans;
+	}
+
+	cover += cell->covered_height*STEP_X*2;
+	area = cover - cell->uncovered_area;
+
+	spans[num_spans].x = x;
+	spans[num_spans].coverage = AREA_TO_ALPHA (area);
+	++num_spans;
+
+	prev_x = x + 1;
+    } while ((cell = cell->next) != &sweep_line->coverage.tail);
+
+    if (prev_x <= self->xmax) {
+	spans[num_spans].x = prev_x;
+	spans[num_spans].inverse = 0;
+	spans[num_spans].coverage = AREA_TO_ALPHA (cover);
+	++num_spans;
+    }
+
+    if (cover && prev_x < self->xmax) {
+	spans[num_spans].x = self->xmax;
+	spans[num_spans].inverse = 1;
+	spans[num_spans].coverage = 0;
+	++num_spans;
+    }
+
+    status = renderer->render_rows (renderer, y, height, spans, num_spans);
+
+    if (unlikely (spans != spans_stack))
+	free (spans);
+
+    coverage_reset (&sweep_line->coverage);
+
+    if (unlikely (status))
+	longjmp (sweep_line->unwind, status);
+}
+
+static void
+full_repeat (sweep_line_t *sweep)
+{
+    edge_t *edge;
+
+    cairo_list_foreach_entry (edge, edge_t, &sweep->active, link) {
+	if (edge->current_sign)
+	    full_add_edge (sweep, edge, edge->current_sign);
+	else if (! edge->vertical)
+	    full_inc_edge (edge);
+    }
+}
+
+static void
+full_reset (sweep_line_t *sweep)
+{
+    edge_t *edge;
+
+    cairo_list_foreach_entry (edge, edge_t, &sweep->active, link)
+	edge->current_sign = 0;
+}
+
+static void
+full_step (cairo_botor_scan_converter_t *self,
+	   sweep_line_t *sweep_line,
+	   cairo_fixed_t row,
+	   cairo_span_renderer_t *renderer)
+{
+    int top, bottom;
+
+    top = _cairo_fixed_integer_part (sweep_line->current_row);
+    bottom = _cairo_fixed_integer_part (row);
+    if (cairo_list_is_empty (&sweep_line->active)) {
+	cairo_status_t  status;
+
+	status = renderer->render_rows (renderer, top, bottom - top, NULL, 0);
+	if (unlikely (status))
+	    longjmp (sweep_line->unwind, status);
+
+	return;
+    }
+
+    if (self->fill_rule == CAIRO_FILL_RULE_WINDING)
+	full_nonzero (sweep_line);
+    else
+	full_evenodd (sweep_line);
+
+    if (sweep_line->is_vertical || bottom == top + 1) {
+	render_rows (self, sweep_line, top, bottom - top, renderer);
+	full_reset (sweep_line);
+	return;
+    }
+
+    render_rows (self, sweep_line, top++, 1, renderer);
+    do {
+	full_repeat (sweep_line);
+	render_rows (self, sweep_line, top, 1, renderer);
+    } while (++top != bottom);
+
+    full_reset (sweep_line);
+}
+
+cairo_always_inline static void
+sub_inc_edge (edge_t *edge,
+	      cairo_fixed_t height)
+{
+    if (height == 1) {
+	edge->x.quo += edge->dxdy.quo;
+	edge->x.rem += edge->dxdy.rem;
+	if (edge->x.rem >= 0) {
+	    ++edge->x.quo;
+	    edge->x.rem -= edge->dy;
+	}
+    } else {
+	edge->x.quo += height * edge->dxdy.quo;
+	edge->x.rem += height * edge->dxdy.rem;
+	if (edge->x.rem >= 0) {
+	    int carry = edge->x.rem / edge->dy + 1;
+	    edge->x.quo += carry;
+	    edge->x.rem -= carry * edge->dy;
+	}
+    }
+}
+
+static void
+sub_add_run (sweep_line_t *sweep_line, edge_t *edge, int y, int sign)
+{
+    struct run *run;
+
+    run = _cairo_freepool_alloc (&sweep_line->runs);
+    if (unlikely (run == NULL))
+	longjmp (sweep_line->unwind, _cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    run->y = y;
+    run->sign = sign;
+    run->next = edge->runs;
+    edge->runs = run;
+
+    edge->current_sign = sign;
+}
+
+inline static cairo_bool_t
+edges_coincident (edge_t *left, edge_t *right, cairo_fixed_t y)
+{
+    /* XXX is compare_x_for_y() worth executing during sub steps? */
+    return line_equal (&left->edge.line, &right->edge.line);
+    //edges_compare_x_for_y (&left->edge, &right->edge, y) >= 0;
+}
+
+static void
+sub_nonzero (sweep_line_t *sweep_line)
+{
+    cairo_fixed_t y = sweep_line->current_subrow;
+    cairo_fixed_t fy = _cairo_fixed_fractional_part (y);
+    cairo_list_t *pos;
+
+    pos = sweep_line->active.next;
+    do {
+	edge_t *left = link_to_edge (pos), *right;
+	int winding = left->edge.dir;
+
+	pos = left->link.next;
+	do {
+	    if (unlikely (pos == &sweep_line->active)) {
+		if (left->current_sign != +1)
+		    sub_add_run (sweep_line, left, fy, +1);
+		return;
+	    }
+
+	    right = link_to_edge (pos);
+	    pos = pos->next;
+
+	    winding += right->edge.dir;
+	    if (0 == winding) {
+		if (pos == &sweep_line->active ||
+		    ! edges_coincident (right, link_to_edge (pos), y))
+		{
+		    break;
+		}
+	    }
+
+	    if (right->current_sign)
+		sub_add_run (sweep_line, right, fy, 0);
+	} while (TRUE);
+
+	if (left->current_sign != +1)
+	    sub_add_run (sweep_line, left, fy, +1);
+	if (right->current_sign != -1)
+	    sub_add_run (sweep_line, right, fy, -1);
+    } while (pos != &sweep_line->active);
+}
+
+static void
+sub_evenodd (sweep_line_t *sweep_line)
+{
+    cairo_fixed_t y = sweep_line->current_subrow;
+    cairo_fixed_t fy = _cairo_fixed_fractional_part (y);
+    cairo_list_t *pos;
+
+    pos = sweep_line->active.next;
+    do {
+	edge_t *left = link_to_edge (pos), *right;
+	int winding = 0;
+
+	pos = left->link.next;
+	do {
+	    if (unlikely (pos == &sweep_line->active)) {
+		if (left->current_sign != +1)
+		    sub_add_run (sweep_line, left, fy, +1);
+		return;
+	    }
+
+	    right = link_to_edge (pos);
+	    pos = pos->next;
+
+	    if (++winding & 1) {
+		if (pos == &sweep_line->active ||
+		    ! edges_coincident (right, link_to_edge (pos), y))
+		{
+		    break;
+		}
+	    }
+
+	    if (right->current_sign)
+		sub_add_run (sweep_line, right, fy, 0);
+	} while (TRUE);
+
+	if (left->current_sign != +1)
+	    sub_add_run (sweep_line, left, fy, +1);
+	if (right->current_sign != -1)
+	    sub_add_run (sweep_line, right, fy, -1);
+    } while (pos != &sweep_line->active);
+}
+
+cairo_always_inline static void
+sub_step (cairo_botor_scan_converter_t *self,
+	  sweep_line_t *sweep_line)
+{
+    if (cairo_list_is_empty (&sweep_line->active))
+	return;
+
+    if (self->fill_rule == CAIRO_FILL_RULE_WINDING)
+	sub_nonzero (sweep_line);
+    else
+	sub_evenodd (sweep_line);
+}
+
+static void
+coverage_render_runs (sweep_line_t *sweep, edge_t *edge,
+		      cairo_fixed_t y1, cairo_fixed_t y2)
+{
+    struct run tail;
+    struct run *run = &tail;
+
+    tail.next = NULL;
+    tail.y = y2;
+
+    /* Order the runs top->bottom */
+    while (edge->runs) {
+	struct run *r;
+
+	r = edge->runs;
+	edge->runs = r->next;
+	r->next = run;
+	run = r;
+    }
+
+    if (run->y > y1)
+	sub_inc_edge (edge, run->y - y1);
+
+    do {
+	cairo_fixed_t x1, x2;
+
+	y1 = run->y;
+	y2 = run->next->y;
+
+	x1 = edge->x.quo;
+	if (y2 - y1 == STEP_Y)
+	    full_inc_edge (edge);
+	else
+	    sub_inc_edge (edge, y2 - y1);
+	x2 = edge->x.quo;
+
+	if (run->sign) {
+	    int ix1, ix2;
+
+	    ix1 = _cairo_fixed_integer_part (x1);
+	    ix2 = _cairo_fixed_integer_part (x2);
+
+	    /* Edge is entirely within a column? */
+	    if (likely (ix1 == ix2)) {
+		struct cell *cell;
+		int frac;
+
+		frac = _cairo_fixed_fractional_part (x1) +
+		       _cairo_fixed_fractional_part (x2);
+		cell = coverage_find (sweep, ix1);
+		cell->covered_height += run->sign * (y2 - y1);
+		cell->uncovered_area += run->sign * (y2 - y1) * frac;
+	    } else {
+		coverage_render_cells (sweep, x1, x2, y1, y2, run->sign);
+	    }
+	}
+
+	run = run->next;
+    } while (run->next != NULL);
+}
+
+static void
+coverage_render_vertical_runs (sweep_line_t *sweep, edge_t *edge, cairo_fixed_t y2)
+{
+    struct cell *cell;
+    struct run *run;
+    int height = 0;
+
+    for (run = edge->runs; run != NULL; run = run->next) {
+	if (run->sign)
+	    height += run->sign * (y2 - run->y);
+	y2 = run->y;
+    }
+
+    cell = coverage_find (sweep, _cairo_fixed_integer_part (edge->x.quo));
+    cell->covered_height += height;
+    cell->uncovered_area += 2 * _cairo_fixed_fractional_part (edge->x.quo) * height;
+}
+
+cairo_always_inline static void
+sub_emit (cairo_botor_scan_converter_t *self,
+	  sweep_line_t *sweep,
+	  cairo_span_renderer_t *renderer)
+{
+    edge_t *edge;
+
+    sub_step (self, sweep);
+
+    /* convert the runs into coverages */
+
+    cairo_list_foreach_entry (edge, edge_t, &sweep->active, link) {
+	if (edge->runs == NULL) {
+	    if (! edge->vertical) {
+		if (edge->flags & START) {
+		    sub_inc_edge (edge,
+				  STEP_Y - _cairo_fixed_fractional_part (edge->edge.top));
+		    edge->flags &= ~START;
+		} else
+		    full_inc_edge (edge);
+	    }
+	} else {
+	    if (edge->vertical) {
+		coverage_render_vertical_runs (sweep, edge, STEP_Y);
+	    } else {
+		int y1 = 0;
+		if (edge->flags & START) {
+		    y1 = _cairo_fixed_fractional_part (edge->edge.top);
+		    edge->flags &= ~START;
+		}
+		coverage_render_runs (sweep, edge, y1, STEP_Y);
+	    }
+	}
+	edge->current_sign = 0;
+	edge->runs = NULL;
+    }
+
+    cairo_list_foreach_entry (edge, edge_t, &sweep->stopped, link) {
+	int y2 = _cairo_fixed_fractional_part (edge->edge.bottom);
+	if (edge->vertical) {
+	    coverage_render_vertical_runs (sweep, edge, y2);
+	} else {
+	    int y1 = 0;
+	    if (edge->flags & START)
+		y1 = _cairo_fixed_fractional_part (edge->edge.top);
+	    coverage_render_runs (sweep, edge, y1, y2);
+	}
+    }
+    cairo_list_init (&sweep->stopped);
+
+    _cairo_freepool_reset (&sweep->runs);
+
+    render_rows (self, sweep,
+		 _cairo_fixed_integer_part (sweep->current_row), 1,
+		 renderer);
+}
+
+static void
+sweep_line_init (sweep_line_t	 *sweep_line,
+		 event_t	**start_events,
+		 int		  num_events)
+{
+    cairo_list_init (&sweep_line->active);
+    cairo_list_init (&sweep_line->stopped);
+    sweep_line->insert_cursor = &sweep_line->active;
+
+    sweep_line->current_row = INT32_MIN;
+    sweep_line->current_subrow = INT32_MIN;
+
+    coverage_init (&sweep_line->coverage);
+    _cairo_freepool_init (&sweep_line->runs, sizeof (struct run));
+
+    start_event_sort (start_events, num_events);
+    start_events[num_events] = NULL;
+
+    sweep_line->queue.start_events = start_events;
+
+    _cairo_freepool_init (&sweep_line->queue.pool,
+			  sizeof (queue_event_t));
+    pqueue_init (&sweep_line->queue.pq);
+    sweep_line->queue.pq.elements[PQ_FIRST_ENTRY] = NULL;
+}
+
+static void
+sweep_line_delete (sweep_line_t	*sweep_line,
+		   edge_t	*edge)
+{
+    if (sweep_line->insert_cursor == &edge->link)
+	sweep_line->insert_cursor = edge->link.prev;
+
+    cairo_list_del (&edge->link);
+    if (edge->runs)
+	cairo_list_add_tail (&edge->link, &sweep_line->stopped);
+    edge->flags |= STOP;
+}
+
+static void
+sweep_line_swap (sweep_line_t	*sweep_line,
+		 edge_t	*left,
+		 edge_t	*right)
+{
+    right->link.prev = left->link.prev;
+    left->link.next = right->link.next;
+    right->link.next = &left->link;
+    left->link.prev = &right->link;
+    left->link.next->prev = &left->link;
+    right->link.prev->next = &right->link;
+}
+
+static void
+sweep_line_fini (sweep_line_t *sweep_line)
+{
+    pqueue_fini (&sweep_line->queue.pq);
+    _cairo_freepool_fini (&sweep_line->queue.pool);
+    coverage_fini (&sweep_line->coverage);
+    _cairo_freepool_fini (&sweep_line->runs);
+}
+
+static cairo_status_t
+botor_generate (cairo_botor_scan_converter_t	 *self,
+		event_t				**start_events,
+		cairo_span_renderer_t		 *renderer)
+{
+    cairo_status_t status;
+    sweep_line_t sweep_line;
+    cairo_fixed_t ybot;
+    event_t *event;
+    cairo_list_t *left, *right;
+    edge_t *e1, *e2;
+    int bottom;
+
+    sweep_line_init (&sweep_line, start_events, self->num_edges);
+    if ((status = setjmp (sweep_line.unwind)))
+	goto unwind;
+
+    ybot = self->extents.p2.y;
+    sweep_line.current_subrow = self->extents.p1.y;
+    sweep_line.current_row = _cairo_fixed_floor (self->extents.p1.y);
+    event = *sweep_line.queue.start_events++;
+    do {
+	/* Can we process a full step in one go? */
+	if (event->y >= sweep_line.current_row + STEP_Y) {
+	    bottom = _cairo_fixed_floor (event->y);
+	    full_step (self, &sweep_line, bottom, renderer);
+	    sweep_line.current_row = bottom;
+	    sweep_line.current_subrow = bottom;
+	}
+
+	do {
+	    if (event->y > sweep_line.current_subrow) {
+		sub_step (self, &sweep_line);
+		sweep_line.current_subrow = event->y;
+	    }
+
+	    do {
+		/* Update the active list using Bentley-Ottmann */
+		switch (event->type) {
+		case EVENT_TYPE_START:
+		    e1 = ((start_event_t *) event)->edge;
+
+		    sweep_line_insert (&sweep_line, e1);
+		    event_insert_stop (&sweep_line, e1);
+
+		    left = e1->link.prev;
+		    right = e1->link.next;
+
+		    if (left != &sweep_line.active) {
+			event_insert_if_intersect_below_current_y (&sweep_line,
+								   link_to_edge (left), e1);
+		    }
+
+		    if (right != &sweep_line.active) {
+			event_insert_if_intersect_below_current_y (&sweep_line,
+								   e1, link_to_edge (right));
+		    }
+
+		    break;
+
+		case EVENT_TYPE_STOP:
+		    e1 = ((queue_event_t *) event)->e1;
+		    event_delete (&sweep_line, event);
+
+		    left = e1->link.prev;
+		    right = e1->link.next;
+
+		    sweep_line_delete (&sweep_line, e1);
+
+		    if (left != &sweep_line.active &&
+			right != &sweep_line.active)
+		    {
+			 event_insert_if_intersect_below_current_y (&sweep_line,
+								    link_to_edge (left),
+								    link_to_edge (right));
+		    }
+
+		    break;
+
+		case EVENT_TYPE_INTERSECTION:
+		    e1 = ((queue_event_t *) event)->e1;
+		    e2 = ((queue_event_t *) event)->e2;
+
+		    event_delete (&sweep_line, event);
+		    if (e1->flags & STOP)
+			break;
+		    if (e2->flags & STOP)
+			break;
+
+		    /* skip this intersection if its edges are not adjacent */
+		    if (&e2->link != e1->link.next)
+			break;
+
+		    left = e1->link.prev;
+		    right = e2->link.next;
+
+		    sweep_line_swap (&sweep_line, e1, e2);
+
+		    /* after the swap e2 is left of e1 */
+		    if (left != &sweep_line.active) {
+			event_insert_if_intersect_below_current_y (&sweep_line,
+								   link_to_edge (left), e2);
+		    }
+
+		    if (right != &sweep_line.active) {
+			event_insert_if_intersect_below_current_y (&sweep_line,
+								   e1, link_to_edge (right));
+		    }
+
+		    break;
+		}
+
+		event = event_next (&sweep_line);
+		if (event == NULL)
+		    goto end;
+	    } while (event->y == sweep_line.current_subrow);
+	} while (event->y < sweep_line.current_row + STEP_Y);
+
+	bottom = sweep_line.current_row + STEP_Y;
+	sub_emit (self, &sweep_line, renderer);
+	sweep_line.current_subrow = bottom;
+	sweep_line.current_row = sweep_line.current_subrow;
+    } while (TRUE);
+
+  end:
+    /* flush any partial spans */
+    if (sweep_line.current_subrow != sweep_line.current_row) {
+	sub_emit (self, &sweep_line, renderer);
+	sweep_line.current_row += STEP_Y;
+	sweep_line.current_subrow = sweep_line.current_row;
+    }
+    /* clear the rest */
+    if (sweep_line.current_subrow < ybot) {
+	bottom = _cairo_fixed_integer_part (sweep_line.current_row);
+	status = renderer->render_rows (renderer,
+					bottom, _cairo_fixed_integer_ceil (ybot) - bottom,
+					NULL, 0);
+    }
+
+ unwind:
+    sweep_line_fini (&sweep_line);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_botor_scan_converter_generate (void			*converter,
+				      cairo_span_renderer_t	*renderer)
+{
+    cairo_botor_scan_converter_t *self = converter;
+    start_event_t stack_events[CAIRO_STACK_ARRAY_LENGTH (start_event_t)];
+    start_event_t *events;
+    event_t *stack_event_ptrs[ARRAY_LENGTH (stack_events) + 1];
+    event_t **event_ptrs;
+    struct _cairo_botor_scan_converter_chunk *chunk;
+    cairo_status_t status;
+    int num_events;
+    int i, j;
+
+    num_events = self->num_edges;
+    if (unlikely (0 == num_events)) {
+	return renderer->render_rows (renderer,
+				      _cairo_fixed_integer_floor (self->extents.p1.y),
+				      _cairo_fixed_integer_ceil (self->extents.p2.y) -
+				      _cairo_fixed_integer_floor (self->extents.p1.y),
+				      NULL, 0);
+    }
+
+    events = stack_events;
+    event_ptrs = stack_event_ptrs;
+    if (unlikely (num_events >= ARRAY_LENGTH (stack_events))) {
+	events = _cairo_malloc_ab_plus_c (num_events,
+					  sizeof (start_event_t) + sizeof (event_t *),
+					  sizeof (event_t *));
+	if (unlikely (events == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	event_ptrs = (event_t **) (events + num_events);
+    }
+
+    j = 0;
+    for (chunk = &self->chunks; chunk != NULL; chunk = chunk->next) {
+	edge_t *edge;
+
+	edge = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    event_ptrs[j] = (event_t *) &events[j];
+
+	    events[j].y = edge->edge.top;
+	    events[j].type = EVENT_TYPE_START;
+	    events[j].edge = edge;
+
+	    edge++, j++;
+	}
+    }
+
+    status = botor_generate (self, event_ptrs, renderer);
+
+    if (events != stack_events)
+	free (events);
+
+    return status;
+}
+
+static edge_t *
+botor_allocate_edge (cairo_botor_scan_converter_t *self)
+{
+    struct _cairo_botor_scan_converter_chunk *chunk;
+
+    chunk = self->tail;
+    if (chunk->count == chunk->size) {
+	int size;
+
+	size = chunk->size * 2;
+	chunk->next = _cairo_malloc_ab_plus_c (size,
+					       sizeof (edge_t),
+					       sizeof (struct _cairo_botor_scan_converter_chunk));
+	if (unlikely (chunk->next == NULL))
+	    return NULL;
+
+	chunk = chunk->next;
+	chunk->next = NULL;
+	chunk->count = 0;
+	chunk->size = size;
+	chunk->base = chunk + 1;
+	self->tail = chunk;
+    }
+
+    return (edge_t *) chunk->base + chunk->count++;
+}
+
+static cairo_status_t
+botor_add_edge (cairo_botor_scan_converter_t *self,
+		const cairo_edge_t *edge)
+{
+    edge_t *e;
+    cairo_fixed_t dx, dy;
+
+    e = botor_allocate_edge (self);
+    if (unlikely (e == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cairo_list_init (&e->link);
+    e->edge = *edge;
+
+    dx = edge->line.p2.x - edge->line.p1.x;
+    dy = edge->line.p2.y - edge->line.p1.y;
+    e->dy = dy;
+
+    if (dx == 0) {
+	e->vertical = TRUE;
+	e->x.quo = edge->line.p1.x;
+	e->x.rem = 0;
+	e->dxdy.quo = 0;
+	e->dxdy.rem = 0;
+	e->dxdy_full.quo = 0;
+	e->dxdy_full.rem = 0;
+    } else {
+	e->vertical = FALSE;
+	e->dxdy = floored_divrem (dx, dy);
+	if (edge->top == edge->line.p1.y) {
+	    e->x.quo = edge->line.p1.x;
+	    e->x.rem = 0;
+	} else {
+	    e->x = floored_muldivrem (edge->top - edge->line.p1.y,
+				      dx, dy);
+	    e->x.quo += edge->line.p1.x;
+	}
+
+	if (_cairo_fixed_integer_part (edge->bottom) - _cairo_fixed_integer_part (edge->top) > 1) {
+	    e->dxdy_full = floored_muldivrem (STEP_Y, dx, dy);
+	} else {
+	    e->dxdy_full.quo = 0;
+	    e->dxdy_full.rem = 0;
+	}
+    }
+
+    e->x.rem = -e->dy;
+    e->current_sign = 0;
+    e->runs = NULL;
+    e->flags = START;
+
+    self->num_edges++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if 0
+static cairo_status_t
+_cairo_botor_scan_converter_add_edge (void		*converter,
+				      const cairo_point_t *p1,
+				      const cairo_point_t *p2,
+				      int top, int bottom,
+				      int dir)
+{
+    cairo_botor_scan_converter_t *self = converter;
+    cairo_edge_t edge;
+
+    edge.line.p1 = *p1;
+    edge.line.p2 = *p2;
+    edge.top = top;
+    edge.bottom = bottom;
+    edge.dir = dir;
+
+    return botor_add_edge (self, &edge);
+}
+#endif
+
+cairo_status_t
+_cairo_botor_scan_converter_add_polygon (cairo_botor_scan_converter_t *converter,
+					 const cairo_polygon_t *polygon)
+{
+    cairo_botor_scan_converter_t *self = converter;
+    cairo_status_t status;
+    int i;
+
+    for (i = 0; i < polygon->num_edges; i++) {
+	status = botor_add_edge (self, &polygon->edges[i]);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_botor_scan_converter_destroy (void *converter)
+{
+    cairo_botor_scan_converter_t *self = converter;
+    struct _cairo_botor_scan_converter_chunk *chunk, *next;
+
+    for (chunk = self->chunks.next; chunk != NULL; chunk = next) {
+	next = chunk->next;
+	free (chunk);
+    }
+}
+
+void
+_cairo_botor_scan_converter_init (cairo_botor_scan_converter_t *self,
+				  const cairo_box_t *extents,
+				  cairo_fill_rule_t fill_rule)
+{
+    self->base.destroy     = _cairo_botor_scan_converter_destroy;
+    self->base.generate    = _cairo_botor_scan_converter_generate;
+
+    self->extents   = *extents;
+    self->fill_rule = fill_rule;
+
+    self->xmin = _cairo_fixed_integer_floor (extents->p1.x);
+    self->xmax = _cairo_fixed_integer_ceil (extents->p2.x);
+
+    self->chunks.base = self->buf;
+    self->chunks.next = NULL;
+    self->chunks.count = 0;
+    self->chunks.size = sizeof (self->buf) / sizeof (edge_t);
+    self->tail = &self->chunks;
+
+    self->num_edges = 0;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-box-inline.h b/libs/cairo-1.16.0/src/cairo-box-inline.h
new file mode 100644
index 0000000..59e5a0d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-box-inline.h
@@ -0,0 +1,131 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Andrea Canciani
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Andrea Canciani <ranma42@gmail.com>
+ */
+
+#ifndef CAIRO_BOX_H
+#define CAIRO_BOX_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-fixed-private.h"
+
+static inline void
+_cairo_box_set (cairo_box_t *box,
+		const cairo_point_t *p1,
+		const cairo_point_t *p2)
+{
+    box->p1 = *p1;
+    box->p2 = *p2;
+}
+
+static inline void
+_cairo_box_from_integers (cairo_box_t *box, int x, int y, int w, int h)
+{
+    box->p1.x = _cairo_fixed_from_int (x);
+    box->p1.y = _cairo_fixed_from_int (y);
+    box->p2.x = _cairo_fixed_from_int (x + w);
+    box->p2.y = _cairo_fixed_from_int (y + h);
+}
+
+static inline void
+_cairo_box_from_rectangle_int (cairo_box_t *box,
+			       const cairo_rectangle_int_t *rect)
+{
+    box->p1.x = _cairo_fixed_from_int (rect->x);
+    box->p1.y = _cairo_fixed_from_int (rect->y);
+    box->p2.x = _cairo_fixed_from_int (rect->x + rect->width);
+    box->p2.y = _cairo_fixed_from_int (rect->y + rect->height);
+}
+
+/* assumes box->p1 is top-left, p2 bottom-right */
+static inline void
+_cairo_box_add_point (cairo_box_t *box,
+		      const cairo_point_t *point)
+{
+    if (point->x < box->p1.x)
+	box->p1.x = point->x;
+    else if (point->x > box->p2.x)
+	box->p2.x = point->x;
+
+    if (point->y < box->p1.y)
+	box->p1.y = point->y;
+    else if (point->y > box->p2.y)
+	box->p2.y = point->y;
+}
+
+static inline void
+_cairo_box_add_box (cairo_box_t *box,
+		    const cairo_box_t *add)
+{
+    if (add->p1.x < box->p1.x)
+	box->p1.x = add->p1.x;
+    if (add->p2.x > box->p2.x)
+	box->p2.x = add->p2.x;
+
+    if (add->p1.y < box->p1.y)
+	box->p1.y = add->p1.y;
+    if (add->p2.y > box->p2.y)
+	box->p2.y = add->p2.y;
+}
+
+/* assumes box->p1 is top-left, p2 bottom-right */
+static inline cairo_bool_t
+_cairo_box_contains_point (const cairo_box_t *box,
+			   const cairo_point_t *point)
+{
+    return box->p1.x <= point->x  && point->x <= box->p2.x &&
+	box->p1.y <= point->y  && point->y <= box->p2.y;
+}
+
+static inline cairo_bool_t
+_cairo_box_is_pixel_aligned (const cairo_box_t *box)
+{
+#if CAIRO_FIXED_FRAC_BITS <= 8 && 0
+    return ((box->p1.x & CAIRO_FIXED_FRAC_MASK) << 24 |
+	    (box->p1.y & CAIRO_FIXED_FRAC_MASK) << 16 |
+	    (box->p2.x & CAIRO_FIXED_FRAC_MASK) << 8 |
+	    (box->p2.y & CAIRO_FIXED_FRAC_MASK) << 0) == 0;
+#else /* GCC on i7 prefers this variant (bizarrely according to the profiler) */
+    cairo_fixed_t f;
+
+    f = 0;
+    f |= box->p1.x & CAIRO_FIXED_FRAC_MASK;
+    f |= box->p1.y & CAIRO_FIXED_FRAC_MASK;
+    f |= box->p2.x & CAIRO_FIXED_FRAC_MASK;
+    f |= box->p2.y & CAIRO_FIXED_FRAC_MASK;
+
+    return f == 0;
+#endif
+}
+
+#endif /* CAIRO_BOX_H */
diff --git a/libs/cairo-1.16.0/src/cairo-boxes-intersect.c b/libs/cairo-1.16.0/src/cairo-boxes-intersect.c
new file mode 100644
index 0000000..96ae663
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-boxes-intersect.c
@@ -0,0 +1,690 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-combsort-inline.h"
+#include "cairo-list-private.h"
+
+#include <setjmp.h>
+
+typedef struct _rectangle rectangle_t;
+typedef struct _edge edge_t;
+
+struct _edge {
+    edge_t *next, *prev;
+    edge_t *right;
+    cairo_fixed_t x, top;
+    int a_or_b;
+    int dir;
+};
+
+struct _rectangle {
+    edge_t left, right;
+    int32_t top, bottom;
+};
+
+#define UNROLL3(x) x x x
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef struct _pqueue {
+    int size, max_size;
+
+    rectangle_t **elements;
+    rectangle_t *elements_embedded[1024];
+} pqueue_t;
+
+typedef struct _sweep_line {
+    rectangle_t **rectangles;
+    pqueue_t pq;
+    edge_t head, tail;
+    edge_t *insert_left, *insert_right;
+    int32_t current_y;
+    int32_t last_y;
+
+    jmp_buf unwind;
+} sweep_line_t;
+
+#define DEBUG_TRAPS 0
+
+#if DEBUG_TRAPS
+static void
+dump_traps (cairo_traps_t *traps, const char *filename)
+{
+    FILE *file;
+    int n;
+
+    if (getenv ("CAIRO_DEBUG_TRAPS") == NULL)
+	return;
+
+    file = fopen (filename, "a");
+    if (file != NULL) {
+	for (n = 0; n < traps->num_traps; n++) {
+	    fprintf (file, "%d %d L:(%d, %d), (%d, %d) R:(%d, %d), (%d, %d)\n",
+		     traps->traps[n].top,
+		     traps->traps[n].bottom,
+		     traps->traps[n].left.p1.x,
+		     traps->traps[n].left.p1.y,
+		     traps->traps[n].left.p2.x,
+		     traps->traps[n].left.p2.y,
+		     traps->traps[n].right.p1.x,
+		     traps->traps[n].right.p1.y,
+		     traps->traps[n].right.p2.x,
+		     traps->traps[n].right.p2.y);
+	}
+	fprintf (file, "\n");
+	fclose (file);
+    }
+}
+#else
+#define dump_traps(traps, filename)
+#endif
+
+static inline int
+rectangle_compare_start (const rectangle_t *a,
+			 const rectangle_t *b)
+{
+    return a->top - b->top;
+}
+
+static inline int
+rectangle_compare_stop (const rectangle_t *a,
+			 const rectangle_t *b)
+{
+    return a->bottom - b->bottom;
+}
+
+static inline void
+pqueue_init (pqueue_t *pq)
+{
+    pq->max_size = ARRAY_LENGTH (pq->elements_embedded);
+    pq->size = 0;
+
+    pq->elements = pq->elements_embedded;
+    pq->elements[PQ_FIRST_ENTRY] = NULL;
+}
+
+static inline void
+pqueue_fini (pqueue_t *pq)
+{
+    if (pq->elements != pq->elements_embedded)
+	free (pq->elements);
+}
+
+static cairo_bool_t
+pqueue_grow (pqueue_t *pq)
+{
+    rectangle_t **new_elements;
+    pq->max_size *= 2;
+
+    if (pq->elements == pq->elements_embedded) {
+	new_elements = _cairo_malloc_ab (pq->max_size,
+					 sizeof (rectangle_t *));
+	if (unlikely (new_elements == NULL))
+	    return FALSE;
+
+	memcpy (new_elements, pq->elements_embedded,
+		sizeof (pq->elements_embedded));
+    } else {
+	new_elements = _cairo_realloc_ab (pq->elements,
+					  pq->max_size,
+					  sizeof (rectangle_t *));
+	if (unlikely (new_elements == NULL))
+	    return FALSE;
+    }
+
+    pq->elements = new_elements;
+    return TRUE;
+}
+
+static inline void
+pqueue_push (sweep_line_t *sweep, rectangle_t *rectangle)
+{
+    rectangle_t **elements;
+    int i, parent;
+
+    if (unlikely (sweep->pq.size + 1 == sweep->pq.max_size)) {
+	if (unlikely (! pqueue_grow (&sweep->pq))) {
+	    longjmp (sweep->unwind,
+		     _cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    elements = sweep->pq.elements;
+    for (i = ++sweep->pq.size;
+	 i != PQ_FIRST_ENTRY &&
+	 rectangle_compare_stop (rectangle,
+				 elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = rectangle;
+}
+
+static inline void
+pqueue_pop (pqueue_t *pq)
+{
+    rectangle_t **elements = pq->elements;
+    rectangle_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    rectangle_compare_stop (elements[child+1],
+				    elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (rectangle_compare_stop (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline rectangle_t *
+rectangle_pop_start (sweep_line_t *sweep_line)
+{
+    return *sweep_line->rectangles++;
+}
+
+static inline rectangle_t *
+rectangle_peek_stop (sweep_line_t *sweep_line)
+{
+    return sweep_line->pq.elements[PQ_FIRST_ENTRY];
+}
+
+CAIRO_COMBSORT_DECLARE (_rectangle_sort,
+			rectangle_t *,
+			rectangle_compare_start)
+
+static void
+sweep_line_init (sweep_line_t	 *sweep_line,
+		 rectangle_t	**rectangles,
+		 int		  num_rectangles)
+{
+    _rectangle_sort (rectangles, num_rectangles);
+    rectangles[num_rectangles] = NULL;
+    sweep_line->rectangles = rectangles;
+
+    sweep_line->head.x = INT32_MIN;
+    sweep_line->head.right = NULL;
+    sweep_line->head.dir = 0;
+    sweep_line->head.next = &sweep_line->tail;
+    sweep_line->tail.x = INT32_MAX;
+    sweep_line->tail.right = NULL;
+    sweep_line->tail.dir = 0;
+    sweep_line->tail.prev = &sweep_line->head;
+
+    sweep_line->insert_left = &sweep_line->tail;
+    sweep_line->insert_right = &sweep_line->tail;
+
+    sweep_line->current_y = INT32_MIN;
+    sweep_line->last_y = INT32_MIN;
+
+    pqueue_init (&sweep_line->pq);
+}
+
+static void
+sweep_line_fini (sweep_line_t *sweep_line)
+{
+    pqueue_fini (&sweep_line->pq);
+}
+
+static void
+end_box (sweep_line_t *sweep_line, edge_t *left, int32_t bot, cairo_boxes_t *out)
+{
+    if (likely (left->top < bot)) {
+	cairo_status_t status;
+	cairo_box_t box;
+
+	box.p1.x = left->x;
+	box.p1.y = left->top;
+	box.p2.x = left->right->x;
+	box.p2.y = bot;
+
+	status = _cairo_boxes_add (out, CAIRO_ANTIALIAS_DEFAULT, &box);
+	if (unlikely (status))
+	    longjmp (sweep_line->unwind, status);
+    }
+
+    left->right = NULL;
+}
+
+/* Start a new trapezoid at the given top y coordinate, whose edges
+ * are `edge' and `edge->next'. If `edge' already has a trapezoid,
+ * then either add it to the traps in `traps', if the trapezoid's
+ * right edge differs from `edge->next', or do nothing if the new
+ * trapezoid would be a continuation of the existing one. */
+static inline void
+start_or_continue_box (sweep_line_t *sweep_line,
+		       edge_t	*left,
+		       edge_t	*right,
+		       int		 top,
+		       cairo_boxes_t *out)
+{
+    if (left->right == right)
+	return;
+
+    if (left->right != NULL) {
+	if (right != NULL && left->right->x == right->x) {
+	    /* continuation on right, so just swap edges */
+	    left->right = right;
+	    return;
+	}
+
+	end_box (sweep_line, left, top, out);
+    }
+
+    if (right != NULL && left->x != right->x) {
+	left->top = top;
+	left->right = right;
+    }
+}
+
+static inline int is_zero(const int *winding)
+{
+    return winding[0] == 0 || winding[1] == 0;
+}
+
+static inline void
+active_edges (sweep_line_t *sweep, cairo_boxes_t *out)
+{
+    int top = sweep->current_y;
+    int winding[2] = { 0 };
+    edge_t *pos;
+
+    if (sweep->last_y == sweep->current_y)
+	return;
+
+    pos = sweep->head.next;
+    if (pos == &sweep->tail)
+	return;
+
+    do {
+	edge_t *left, *right;
+
+	left = pos;
+	do {
+	    winding[left->a_or_b] += left->dir;
+	    if (!is_zero (winding))
+		break;
+	    if (left->next == &sweep->tail)
+		goto out;
+
+	    if (unlikely (left->right != NULL))
+		end_box (sweep, left, top, out);
+
+	    left = left->next;
+	} while (1);
+
+	right = left->next;
+	do {
+	    if (unlikely (right->right != NULL))
+		end_box (sweep, right, top, out);
+
+	    winding[right->a_or_b] += right->dir;
+	    if (is_zero (winding)) {
+		/* skip co-linear edges */
+		if (likely (right->x != right->next->x))
+		    break;
+	    }
+
+	    right = right->next;
+	} while (TRUE);
+
+	start_or_continue_box (sweep, left, right, top, out);
+
+	pos = right->next;
+    } while (pos != &sweep->tail);
+
+out:
+    sweep->last_y = sweep->current_y;
+}
+
+static inline void
+sweep_line_delete_edge (sweep_line_t *sweep_line, edge_t *edge, cairo_boxes_t *out)
+{
+    if (edge->right != NULL) {
+	edge_t *next = edge->next;
+	if (next->x == edge->x) {
+	    next->top = edge->top;
+	    next->right = edge->right;
+	} else {
+	    end_box (sweep_line, edge, sweep_line->current_y, out);
+	}
+    }
+
+    if (sweep_line->insert_left == edge)
+	sweep_line->insert_left = edge->next;
+    if (sweep_line->insert_right == edge)
+	sweep_line->insert_right = edge->next;
+
+    edge->prev->next = edge->next;
+    edge->next->prev = edge->prev;
+}
+
+static inline void
+sweep_line_delete (sweep_line_t	*sweep,
+		   rectangle_t	*rectangle,
+		   cairo_boxes_t *out)
+{
+    sweep_line_delete_edge (sweep, &rectangle->left, out);
+    sweep_line_delete_edge (sweep, &rectangle->right, out);
+
+    pqueue_pop (&sweep->pq);
+}
+
+static inline void
+insert_edge (edge_t *edge, edge_t *pos)
+{
+    if (pos->x != edge->x) {
+	if (pos->x > edge->x) {
+	    do {
+		UNROLL3({
+		    if (pos->prev->x <= edge->x)
+			break;
+		    pos = pos->prev;
+		})
+	    } while (TRUE);
+	} else {
+	    do {
+		UNROLL3({
+		    pos = pos->next;
+		    if (pos->x >= edge->x)
+			break;
+		})
+	    } while (TRUE);
+	}
+    }
+
+    pos->prev->next = edge;
+    edge->prev = pos->prev;
+    edge->next = pos;
+    pos->prev = edge;
+}
+
+static inline void
+sweep_line_insert (sweep_line_t	*sweep, rectangle_t	*rectangle)
+{
+    edge_t *pos;
+
+    /* right edge */
+    pos = sweep->insert_right;
+    insert_edge (&rectangle->right, pos);
+    sweep->insert_right = &rectangle->right;
+
+    /* left edge */
+    pos = sweep->insert_left;
+    if (pos->x > sweep->insert_right->x)
+	pos = sweep->insert_right->prev;
+    insert_edge (&rectangle->left, pos);
+    sweep->insert_left = &rectangle->left;
+
+    pqueue_push (sweep, rectangle);
+}
+
+static cairo_status_t
+intersect (rectangle_t **rectangles, int num_rectangles, cairo_boxes_t *out)
+{
+    sweep_line_t sweep_line;
+    rectangle_t *rectangle;
+    cairo_status_t status;
+
+    sweep_line_init (&sweep_line, rectangles, num_rectangles);
+    if ((status = setjmp (sweep_line.unwind)))
+	goto unwind;
+
+    rectangle = rectangle_pop_start (&sweep_line);
+    do {
+	if (rectangle->top != sweep_line.current_y) {
+	    rectangle_t *stop;
+
+	    stop = rectangle_peek_stop (&sweep_line);
+	    while (stop != NULL && stop->bottom < rectangle->top) {
+		if (stop->bottom != sweep_line.current_y) {
+		    active_edges (&sweep_line, out);
+		    sweep_line.current_y = stop->bottom;
+		}
+
+		sweep_line_delete (&sweep_line, stop, out);
+
+		stop = rectangle_peek_stop (&sweep_line);
+	    }
+
+	    active_edges (&sweep_line, out);
+	    sweep_line.current_y = rectangle->top;
+	}
+
+	sweep_line_insert (&sweep_line, rectangle);
+    } while ((rectangle = rectangle_pop_start (&sweep_line)) != NULL);
+
+    while ((rectangle = rectangle_peek_stop (&sweep_line)) != NULL) {
+	if (rectangle->bottom != sweep_line.current_y) {
+	    active_edges (&sweep_line, out);
+	    sweep_line.current_y = rectangle->bottom;
+	}
+
+	sweep_line_delete (&sweep_line, rectangle, out);
+    }
+
+unwind:
+    sweep_line_fini (&sweep_line);
+    return status;
+}
+
+static cairo_status_t
+_cairo_boxes_intersect_with_box (const cairo_boxes_t *boxes,
+				 const cairo_box_t *box,
+				 cairo_boxes_t *out)
+{
+    cairo_status_t status;
+    int i, j;
+
+    if (out == boxes) { /* inplace update */
+	struct _cairo_boxes_chunk *chunk;
+
+	out->num_boxes = 0;
+	for (chunk = &out->chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = j = 0; i < chunk->count; i++) {
+		cairo_box_t *b = &chunk->base[i];
+
+		b->p1.x = MAX (b->p1.x, box->p1.x);
+		b->p1.y = MAX (b->p1.y, box->p1.y);
+		b->p2.x = MIN (b->p2.x, box->p2.x);
+		b->p2.y = MIN (b->p2.y, box->p2.y);
+		if (b->p1.x < b->p2.x && b->p1.y < b->p2.y) {
+		    if (i != j)
+			chunk->base[j] = *b;
+		    j++;
+		}
+	    }
+	    /* XXX unlink empty chains? */
+	    chunk->count = j;
+	    out->num_boxes += j;
+	}
+    } else {
+	const struct _cairo_boxes_chunk *chunk;
+
+	_cairo_boxes_clear (out);
+	_cairo_boxes_limit (out, box, 1);
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		status = _cairo_boxes_add (out,
+					   CAIRO_ANTIALIAS_DEFAULT,
+					   &chunk->base[i]);
+		if (unlikely (status))
+		    return status;
+	    }
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_boxes_intersect (const cairo_boxes_t *a,
+			const cairo_boxes_t *b,
+			cairo_boxes_t *out)
+{
+    rectangle_t stack_rectangles[CAIRO_STACK_ARRAY_LENGTH (rectangle_t)];
+    rectangle_t *rectangles;
+    rectangle_t *stack_rectangles_ptrs[ARRAY_LENGTH (stack_rectangles) + 1];
+    rectangle_t **rectangles_ptrs;
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    int i, j, count;
+
+    if (unlikely (a->num_boxes == 0 || b->num_boxes == 0)) {
+	_cairo_boxes_clear (out);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (a->num_boxes == 1) {
+	cairo_box_t box = a->chunks.base[0];
+	return _cairo_boxes_intersect_with_box (b, &box, out);
+    }
+    if (b->num_boxes == 1) {
+	cairo_box_t box = b->chunks.base[0];
+	return _cairo_boxes_intersect_with_box (a, &box, out);
+    }
+
+    rectangles = stack_rectangles;
+    rectangles_ptrs = stack_rectangles_ptrs;
+    count = a->num_boxes + b->num_boxes;
+    if (count > ARRAY_LENGTH (stack_rectangles)) {
+	rectangles = _cairo_malloc_ab_plus_c (count,
+					      sizeof (rectangle_t) +
+					      sizeof (rectangle_t *),
+					      sizeof (rectangle_t *));
+	if (unlikely (rectangles == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	rectangles_ptrs = (rectangle_t **) (rectangles + count);
+    }
+
+    j = 0;
+    for (chunk = &a->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    if (box[i].p1.x < box[i].p2.x) {
+		rectangles[j].left.x = box[i].p1.x;
+		rectangles[j].left.dir = 1;
+
+		rectangles[j].right.x = box[i].p2.x;
+		rectangles[j].right.dir = -1;
+	    } else {
+		rectangles[j].right.x = box[i].p1.x;
+		rectangles[j].right.dir = 1;
+
+		rectangles[j].left.x = box[i].p2.x;
+		rectangles[j].left.dir = -1;
+	    }
+
+	    rectangles[j].left.a_or_b = 0;
+	    rectangles[j].left.right = NULL;
+	    rectangles[j].right.a_or_b = 0;
+	    rectangles[j].right.right = NULL;
+
+	    rectangles[j].top = box[i].p1.y;
+	    rectangles[j].bottom = box[i].p2.y;
+
+	    rectangles_ptrs[j] = &rectangles[j];
+	    j++;
+	}
+    }
+    for (chunk = &b->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    if (box[i].p1.x < box[i].p2.x) {
+		rectangles[j].left.x = box[i].p1.x;
+		rectangles[j].left.dir = 1;
+
+		rectangles[j].right.x = box[i].p2.x;
+		rectangles[j].right.dir = -1;
+	    } else {
+		rectangles[j].right.x = box[i].p1.x;
+		rectangles[j].right.dir = 1;
+
+		rectangles[j].left.x = box[i].p2.x;
+		rectangles[j].left.dir = -1;
+	    }
+
+	    rectangles[j].left.a_or_b = 1;
+	    rectangles[j].left.right = NULL;
+	    rectangles[j].right.a_or_b = 1;
+	    rectangles[j].right.right = NULL;
+
+	    rectangles[j].top = box[i].p1.y;
+	    rectangles[j].bottom = box[i].p2.y;
+
+	    rectangles_ptrs[j] = &rectangles[j];
+	    j++;
+	}
+    }
+    assert (j == count);
+
+    _cairo_boxes_clear (out);
+    status = intersect (rectangles_ptrs, j, out);
+    if (rectangles != stack_rectangles)
+	free (rectangles);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-boxes-private.h b/libs/cairo-1.16.0/src/cairo-boxes-private.h
new file mode 100644
index 0000000..fd622ae
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-boxes-private.h
@@ -0,0 +1,122 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_BOXES_H
+#define CAIRO_BOXES_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+struct _cairo_boxes_t {
+    cairo_status_t status;
+
+    cairo_box_t limit;
+    const cairo_box_t *limits;
+    int num_limits;
+
+    int num_boxes;
+
+    unsigned int is_pixel_aligned;
+
+    struct _cairo_boxes_chunk {
+	struct _cairo_boxes_chunk *next;
+	cairo_box_t *base;
+	int count;
+	int size;
+    } chunks, *tail;
+    cairo_box_t boxes_embedded[32];
+};
+
+cairo_private void
+_cairo_boxes_init (cairo_boxes_t *boxes);
+
+cairo_private void
+_cairo_boxes_init_with_clip (cairo_boxes_t *boxes,
+			     cairo_clip_t *clip);
+
+cairo_private void
+_cairo_boxes_init_for_array (cairo_boxes_t *boxes,
+			     cairo_box_t *array,
+			     int num_boxes);
+
+cairo_private void
+_cairo_boxes_init_from_rectangle (cairo_boxes_t *boxes,
+				  int x, int y, int w, int h);
+
+cairo_private void
+_cairo_boxes_limit (cairo_boxes_t	*boxes,
+		    const cairo_box_t	*limits,
+		    int			 num_limits);
+
+cairo_private cairo_status_t
+_cairo_boxes_add (cairo_boxes_t *boxes,
+		  cairo_antialias_t antialias,
+		  const cairo_box_t *box);
+
+cairo_private void
+_cairo_boxes_extents (const cairo_boxes_t *boxes,
+		      cairo_box_t *box);
+
+cairo_private cairo_box_t *
+_cairo_boxes_to_array (const cairo_boxes_t *boxes,
+		       int *num_boxes);
+
+cairo_private cairo_status_t
+_cairo_boxes_intersect (const cairo_boxes_t *a,
+			const cairo_boxes_t *b,
+			cairo_boxes_t *out);
+
+cairo_private void
+_cairo_boxes_clear (cairo_boxes_t *boxes);
+
+cairo_private_no_warn cairo_bool_t
+_cairo_boxes_for_each_box (cairo_boxes_t *boxes,
+			   cairo_bool_t (*func) (cairo_box_t *box, void *data),
+			   void *data);
+
+cairo_private cairo_status_t
+_cairo_rasterise_polygon_to_boxes (cairo_polygon_t			*polygon,
+				   cairo_fill_rule_t			 fill_rule,
+				   cairo_boxes_t *boxes);
+
+cairo_private void
+_cairo_boxes_fini (cairo_boxes_t *boxes);
+
+cairo_private void
+_cairo_debug_print_boxes (FILE *stream,
+			  const cairo_boxes_t *boxes);
+
+#endif /* CAIRO_BOXES_H */
diff --git a/libs/cairo-1.16.0/src/cairo-boxes.c b/libs/cairo-1.16.0/src/cairo-boxes.c
new file mode 100644
index 0000000..3c5d2a7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-boxes.c
@@ -0,0 +1,486 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+
+void
+_cairo_boxes_init (cairo_boxes_t *boxes)
+{
+    boxes->status = CAIRO_STATUS_SUCCESS;
+    boxes->num_limits = 0;
+    boxes->num_boxes = 0;
+
+    boxes->tail = &boxes->chunks;
+    boxes->chunks.next = NULL;
+    boxes->chunks.base = boxes->boxes_embedded;
+    boxes->chunks.size = ARRAY_LENGTH (boxes->boxes_embedded);
+    boxes->chunks.count = 0;
+
+    boxes->is_pixel_aligned = TRUE;
+}
+
+void
+_cairo_boxes_init_from_rectangle (cairo_boxes_t *boxes,
+				  int x, int y, int w, int h)
+{
+    _cairo_boxes_init (boxes);
+
+    _cairo_box_from_integers (&boxes->chunks.base[0], x, y, w, h);
+    boxes->num_boxes = 1;
+}
+
+void
+_cairo_boxes_init_with_clip (cairo_boxes_t *boxes,
+			     cairo_clip_t *clip)
+{
+    _cairo_boxes_init (boxes);
+    if (clip)
+	_cairo_boxes_limit (boxes, clip->boxes, clip->num_boxes);
+}
+
+void
+_cairo_boxes_init_for_array (cairo_boxes_t *boxes,
+			     cairo_box_t *array,
+			     int num_boxes)
+{
+    int n;
+
+    boxes->status = CAIRO_STATUS_SUCCESS;
+    boxes->num_limits = 0;
+    boxes->num_boxes = num_boxes;
+
+    boxes->tail = &boxes->chunks;
+    boxes->chunks.next = NULL;
+    boxes->chunks.base = array;
+    boxes->chunks.size = num_boxes;
+    boxes->chunks.count = num_boxes;
+
+    for (n = 0; n < num_boxes; n++) {
+	if (! _cairo_fixed_is_integer (array[n].p1.x) ||
+	    ! _cairo_fixed_is_integer (array[n].p1.y) ||
+	    ! _cairo_fixed_is_integer (array[n].p2.x) ||
+	    ! _cairo_fixed_is_integer (array[n].p2.y))
+	{
+	    break;
+	}
+    }
+
+    boxes->is_pixel_aligned = n == num_boxes;
+}
+
+/** _cairo_boxes_limit:
+ *
+ * Computes the minimum bounding box of the given list of boxes and assign
+ * it to the given boxes set. It also assigns that list as the list of
+ * limiting boxes in the box set.
+ *
+ * @param boxes        the box set to be filled (return buffer)
+ * @param limits       array of the limiting boxes to compute the bounding
+ *                     box from
+ * @param num_limits   length of the limits array
+ */
+void
+_cairo_boxes_limit (cairo_boxes_t	*boxes,
+		    const cairo_box_t	*limits,
+		    int			 num_limits)
+{
+    int n;
+
+    boxes->limits = limits;
+    boxes->num_limits = num_limits;
+
+    if (boxes->num_limits) {
+	boxes->limit = limits[0];
+	for (n = 1; n < num_limits; n++) {
+	    if (limits[n].p1.x < boxes->limit.p1.x)
+		boxes->limit.p1.x = limits[n].p1.x;
+
+	    if (limits[n].p1.y < boxes->limit.p1.y)
+		boxes->limit.p1.y = limits[n].p1.y;
+
+	    if (limits[n].p2.x > boxes->limit.p2.x)
+		boxes->limit.p2.x = limits[n].p2.x;
+
+	    if (limits[n].p2.y > boxes->limit.p2.y)
+		boxes->limit.p2.y = limits[n].p2.y;
+	}
+    }
+}
+
+static void
+_cairo_boxes_add_internal (cairo_boxes_t *boxes,
+			   const cairo_box_t *box)
+{
+    struct _cairo_boxes_chunk *chunk;
+
+    if (unlikely (boxes->status))
+	return;
+
+    chunk = boxes->tail;
+    if (unlikely (chunk->count == chunk->size)) {
+	int size;
+
+	size = chunk->size * 2;
+	chunk->next = _cairo_malloc_ab_plus_c (size,
+					       sizeof (cairo_box_t),
+					       sizeof (struct _cairo_boxes_chunk));
+
+	if (unlikely (chunk->next == NULL)) {
+	    boxes->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    return;
+	}
+
+	chunk = chunk->next;
+	boxes->tail = chunk;
+
+	chunk->next = NULL;
+	chunk->count = 0;
+	chunk->size = size;
+	chunk->base = (cairo_box_t *) (chunk + 1);
+    }
+
+    chunk->base[chunk->count++] = *box;
+    boxes->num_boxes++;
+
+    if (boxes->is_pixel_aligned)
+	boxes->is_pixel_aligned = _cairo_box_is_pixel_aligned (box);
+}
+
+cairo_status_t
+_cairo_boxes_add (cairo_boxes_t *boxes,
+		  cairo_antialias_t antialias,
+		  const cairo_box_t *box)
+{
+    cairo_box_t b;
+
+    if (antialias == CAIRO_ANTIALIAS_NONE) {
+	b.p1.x = _cairo_fixed_round_down (box->p1.x);
+	b.p1.y = _cairo_fixed_round_down (box->p1.y);
+	b.p2.x = _cairo_fixed_round_down (box->p2.x);
+	b.p2.y = _cairo_fixed_round_down (box->p2.y);
+	box = &b;
+    }
+
+    if (box->p1.y == box->p2.y)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (box->p1.x == box->p2.x)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (boxes->num_limits) {
+	cairo_point_t p1, p2;
+	cairo_bool_t reversed = FALSE;
+	int n;
+
+	/* support counter-clockwise winding for rectangular tessellation */
+	if (box->p1.x < box->p2.x) {
+	    p1.x = box->p1.x;
+	    p2.x = box->p2.x;
+	} else {
+	    p2.x = box->p1.x;
+	    p1.x = box->p2.x;
+	    reversed = ! reversed;
+	}
+
+	if (p1.x >= boxes->limit.p2.x || p2.x <= boxes->limit.p1.x)
+	    return CAIRO_STATUS_SUCCESS;
+
+	if (box->p1.y < box->p2.y) {
+	    p1.y = box->p1.y;
+	    p2.y = box->p2.y;
+	} else {
+	    p2.y = box->p1.y;
+	    p1.y = box->p2.y;
+	    reversed = ! reversed;
+	}
+
+	if (p1.y >= boxes->limit.p2.y || p2.y <= boxes->limit.p1.y)
+	    return CAIRO_STATUS_SUCCESS;
+
+	for (n = 0; n < boxes->num_limits; n++) {
+	    const cairo_box_t *limits = &boxes->limits[n];
+	    cairo_box_t _box;
+	    cairo_point_t _p1, _p2;
+
+	    if (p1.x >= limits->p2.x || p2.x <= limits->p1.x)
+		continue;
+	    if (p1.y >= limits->p2.y || p2.y <= limits->p1.y)
+		continue;
+
+	    /* Otherwise, clip the box to the limits. */
+	    _p1 = p1;
+	    if (_p1.x < limits->p1.x)
+		_p1.x = limits->p1.x;
+	    if (_p1.y < limits->p1.y)
+		_p1.y = limits->p1.y;
+
+	    _p2 = p2;
+	    if (_p2.x > limits->p2.x)
+		_p2.x = limits->p2.x;
+	    if (_p2.y > limits->p2.y)
+		_p2.y = limits->p2.y;
+
+	    if (_p2.y <= _p1.y || _p2.x <= _p1.x)
+		continue;
+
+	    _box.p1.y = _p1.y;
+	    _box.p2.y = _p2.y;
+	    if (reversed) {
+		_box.p1.x = _p2.x;
+		_box.p2.x = _p1.x;
+	    } else {
+		_box.p1.x = _p1.x;
+		_box.p2.x = _p2.x;
+	    }
+
+	    _cairo_boxes_add_internal (boxes, &_box);
+	}
+    } else {
+	_cairo_boxes_add_internal (boxes, box);
+    }
+
+    return boxes->status;
+}
+
+/** _cairo_boxes_extents:
+ *
+ * Computes the minimum bounding box of the given box set and stores
+ * it in the given box.
+ *
+ * @param boxes      The box set whose minimum bounding is computed.
+ * @param box        Return buffer for the computed result.
+ */
+void
+_cairo_boxes_extents (const cairo_boxes_t *boxes,
+		      cairo_box_t *box)
+{
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_box_t b;
+    int i;
+
+    if (boxes->num_boxes == 0) {
+	box->p1.x = box->p1.y = box->p2.x = box->p2.y = 0;
+	return;
+    }
+
+    b = boxes->chunks.base[0];
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    if (chunk->base[i].p1.x < b.p1.x)
+		b.p1.x = chunk->base[i].p1.x;
+
+	    if (chunk->base[i].p1.y < b.p1.y)
+		b.p1.y = chunk->base[i].p1.y;
+
+	    if (chunk->base[i].p2.x > b.p2.x)
+		b.p2.x = chunk->base[i].p2.x;
+
+	    if (chunk->base[i].p2.y > b.p2.y)
+		b.p2.y = chunk->base[i].p2.y;
+	}
+    }
+    *box = b;
+}
+
+void
+_cairo_boxes_clear (cairo_boxes_t *boxes)
+{
+    struct _cairo_boxes_chunk *chunk, *next;
+
+    for (chunk = boxes->chunks.next; chunk != NULL; chunk = next) {
+	next = chunk->next;
+	free (chunk);
+    }
+
+    boxes->tail = &boxes->chunks;
+    boxes->chunks.next = 0;
+    boxes->chunks.count = 0;
+    boxes->chunks.base = boxes->boxes_embedded;
+    boxes->chunks.size = ARRAY_LENGTH (boxes->boxes_embedded);
+    boxes->num_boxes = 0;
+
+    boxes->is_pixel_aligned = TRUE;
+}
+
+/** _cairo_boxes_to_array:
+ *
+ * Linearize a box set of possibly multiple chunks into one big chunk
+ * and returns an array of boxes
+ *
+ * @param boxes      The box set to be converted.
+ * @param num_boxes  Return buffer for the number of boxes (array count).
+ * @return           Pointer to the newly allocated array of boxes
+ *                   (the number o elements is given in num_boxes).
+ */
+cairo_box_t *
+_cairo_boxes_to_array (const cairo_boxes_t *boxes,
+		       int *num_boxes)
+{
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_box_t *box;
+    int i, j;
+
+    *num_boxes = boxes->num_boxes;
+
+    box = _cairo_malloc_ab (boxes->num_boxes, sizeof (cairo_box_t));
+    if (box == NULL) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    j = 0;
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++)
+	    box[j++] = chunk->base[i];
+    }
+
+    return box;
+}
+
+void
+_cairo_boxes_fini (cairo_boxes_t *boxes)
+{
+    struct _cairo_boxes_chunk *chunk, *next;
+
+    for (chunk = boxes->chunks.next; chunk != NULL; chunk = next) {
+	next = chunk->next;
+	free (chunk);
+    }
+}
+
+cairo_bool_t
+_cairo_boxes_for_each_box (cairo_boxes_t *boxes,
+			   cairo_bool_t (*func) (cairo_box_t *box, void *data),
+			   void *data)
+{
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++)
+	    if (! func (&chunk->base[i], data))
+		return FALSE;
+    }
+
+    return TRUE;
+}
+
+struct cairo_box_renderer {
+    cairo_span_renderer_t base;
+    cairo_boxes_t *boxes;
+};
+
+static cairo_status_t
+span_to_boxes (void *abstract_renderer, int y, int h,
+	       const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    struct cairo_box_renderer *r = abstract_renderer;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_box_t box;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    box.p1.y = _cairo_fixed_from_int (y);
+    box.p2.y = _cairo_fixed_from_int (y + h);
+    do {
+	if (spans[0].coverage) {
+	    box.p1.x = _cairo_fixed_from_int(spans[0].x);
+	    box.p2.x = _cairo_fixed_from_int(spans[1].x);
+	    status = _cairo_boxes_add (r->boxes, CAIRO_ANTIALIAS_DEFAULT, &box);
+	}
+	spans++;
+    } while (--num_spans > 1 && status == CAIRO_STATUS_SUCCESS);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_rasterise_polygon_to_boxes (cairo_polygon_t			*polygon,
+				   cairo_fill_rule_t			 fill_rule,
+				   cairo_boxes_t *boxes)
+{
+    struct cairo_box_renderer renderer;
+    cairo_scan_converter_t *converter;
+    cairo_int_status_t status;
+    cairo_rectangle_int_t r;
+
+    TRACE ((stderr, "%s: fill_rule=%d\n", __FUNCTION__, fill_rule));
+
+    _cairo_box_round_to_rectangle (&polygon->extents, &r);
+    converter = _cairo_mono_scan_converter_create (r.x, r.y,
+						   r.x + r.width,
+						   r.y + r.height,
+						   fill_rule);
+    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
+    if (unlikely (status))
+	goto cleanup_converter;
+
+    renderer.boxes = boxes;
+    renderer.base.render_rows = span_to_boxes;
+
+    status = converter->generate (converter, &renderer.base);
+cleanup_converter:
+    converter->destroy (converter);
+    return status;
+}
+
+void
+_cairo_debug_print_boxes (FILE *stream, const cairo_boxes_t *boxes)
+{
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_box_t extents;
+    int i;
+
+    _cairo_boxes_extents (boxes, &extents);
+    fprintf (stream, "boxes x %d: (%f, %f) x (%f, %f)\n",
+	     boxes->num_boxes,
+	     _cairo_fixed_to_double (extents.p1.x),
+	     _cairo_fixed_to_double (extents.p1.y),
+	     _cairo_fixed_to_double (extents.p2.x),
+	     _cairo_fixed_to_double (extents.p2.y));
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    fprintf (stderr, "  box[%d]: (%f, %f), (%f, %f)\n", i,
+		     _cairo_fixed_to_double (chunk->base[i].p1.x),
+		     _cairo_fixed_to_double (chunk->base[i].p1.y),
+		     _cairo_fixed_to_double (chunk->base[i].p2.x),
+		     _cairo_fixed_to_double (chunk->base[i].p2.y));
+	}
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-cache-private.h b/libs/cairo-1.16.0/src/cairo-cache-private.h
new file mode 100644
index 0000000..24b6d0b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cache-private.h
@@ -0,0 +1,145 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc.
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *	Graydon Hoare <graydon@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_CACHE_PRIVATE_H
+#define CAIRO_CACHE_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+
+/**
+ * _cairo_cache_entry:
+ *
+ * A #cairo_cache_entry_t contains both a key and a value for
+ * #cairo_cache_t. User-derived types for #cairo_cache_entry_t must
+ * have a #cairo_cache_entry_t as their first field. For example:
+ *
+ * 	typedef _my_entry {
+ *	    cairo_cache_entry_t base;
+ *	    ... Remainder of key and value fields here ..
+ *	} my_entry_t;
+ *
+ * which then allows a pointer to my_entry_t to be passed to any of
+ * the #cairo_cache_t functions as follows without requiring a cast:
+ *
+ *	_cairo_cache_insert (cache, &my_entry->base, size);
+ *
+ * IMPORTANT: The caller is responsible for initializing
+ * my_entry->base.hash with a hash code derived from the key.  The
+ * essential property of the hash code is that keys_equal must never
+ * return %TRUE for two keys that have different hashes. The best hash
+ * code will reduce the frequency of two keys with the same code for
+ * which keys_equal returns %FALSE.
+ *
+ * The user must also initialize my_entry->base.size to indicate
+ * the size of the current entry. What units to use for size is
+ * entirely up to the caller, (though the same units must be used for
+ * the max_size parameter passed to _cairo_cache_create()). If all
+ * entries are close to the same size, the simplest thing to do is to
+ * just use units of "entries", (eg. set size==1 in all entries and
+ * set max_size to the number of entries which you want to be saved
+ * in the cache).
+ *
+ * Which parts of the entry make up the "key" and which part make up
+ * the value are entirely up to the caller, (as determined by the
+ * computation going into base.hash as well as the keys_equal
+ * function). A few of the #cairo_cache_t functions accept an entry which
+ * will be used exclusively as a "key", (indicated by a parameter name
+ * of key). In these cases, the value-related fields of the entry need
+ * not be initialized if so desired.
+ **/
+typedef struct _cairo_cache_entry {
+    unsigned long hash;
+    unsigned long size;
+} cairo_cache_entry_t;
+
+typedef cairo_bool_t (*cairo_cache_predicate_func_t) (const void *entry);
+
+struct _cairo_cache {
+    cairo_hash_table_t *hash_table;
+
+    cairo_cache_predicate_func_t predicate;
+    cairo_destroy_func_t entry_destroy;
+
+    unsigned long max_size;
+    unsigned long size;
+
+    int freeze_count;
+};
+
+typedef cairo_bool_t
+(*cairo_cache_keys_equal_func_t) (const void *key_a, const void *key_b);
+
+typedef void
+(*cairo_cache_callback_func_t) (void *entry,
+				void *closure);
+
+cairo_private cairo_status_t
+_cairo_cache_init (cairo_cache_t *cache,
+	           cairo_cache_keys_equal_func_t keys_equal,
+		   cairo_cache_predicate_func_t  predicate,
+		   cairo_destroy_func_t	   entry_destroy,
+		   unsigned long		   max_size);
+
+cairo_private void
+_cairo_cache_fini (cairo_cache_t *cache);
+
+cairo_private void
+_cairo_cache_freeze (cairo_cache_t *cache);
+
+cairo_private void
+_cairo_cache_thaw (cairo_cache_t *cache);
+
+cairo_private void *
+_cairo_cache_lookup (cairo_cache_t	  *cache,
+		     cairo_cache_entry_t  *key);
+
+cairo_private cairo_status_t
+_cairo_cache_insert (cairo_cache_t	 *cache,
+		     cairo_cache_entry_t *entry);
+
+cairo_private void
+_cairo_cache_remove (cairo_cache_t	 *cache,
+		     cairo_cache_entry_t *entry);
+
+cairo_private void
+_cairo_cache_foreach (cairo_cache_t		 *cache,
+		      cairo_cache_callback_func_t cache_callback,
+		      void			 *closure);
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-cache.c b/libs/cairo-1.16.0/src/cairo-cache.c
new file mode 100644
index 0000000..5c4e4ca
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cache.c
@@ -0,0 +1,338 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc.
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *	Graydon Hoare <graydon@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+static void
+_cairo_cache_shrink_to_accommodate (cairo_cache_t *cache,
+				    unsigned long  additional);
+
+static cairo_bool_t
+_cairo_cache_entry_is_non_zero (const void *entry)
+{
+    return ((const cairo_cache_entry_t *) entry)->size;
+}
+
+
+/**
+ * _cairo_cache_init:
+ * @cache: the #cairo_cache_t to initialise
+ * @keys_equal: a function to return %TRUE if two keys are equal
+ * @entry_destroy: destroy notifier for cache entries
+ * @max_size: the maximum size for this cache
+ * Returns: the newly created #cairo_cache_t
+ *
+ * Creates a new cache using the keys_equal() function to determine
+ * the equality of entries.
+ *
+ * Data is provided to the cache in the form of user-derived version
+ * of #cairo_cache_entry_t. A cache entry must be able to hold hash
+ * code, a size, and the key/value pair being stored in the
+ * cache. Sometimes only the key will be necessary, (as in
+ * _cairo_cache_lookup()), and in these cases the value portion of the
+ * entry need not be initialized.
+ *
+ * The units for max_size can be chosen by the caller, but should be
+ * consistent with the units of the size field of cache entries. When
+ * adding an entry with _cairo_cache_insert() if the total size of
+ * entries in the cache would exceed max_size then entries will be
+ * removed at random until the new entry would fit or the cache is
+ * empty. Then the new entry is inserted.
+ *
+ * There are cases in which the automatic removal of entries is
+ * undesired. If the cache entries have reference counts, then it is a
+ * simple matter to use the reference counts to ensure that entries
+ * continue to live even after being ejected from the cache. However,
+ * in some cases the memory overhead of adding a reference count to
+ * the entry would be objectionable. In such cases, the
+ * _cairo_cache_freeze() and _cairo_cache_thaw() calls can be
+ * used to establish a window during which no automatic removal of
+ * entries will occur.
+ **/
+cairo_status_t
+_cairo_cache_init (cairo_cache_t		*cache,
+		   cairo_cache_keys_equal_func_t keys_equal,
+		   cairo_cache_predicate_func_t  predicate,
+		   cairo_destroy_func_t		 entry_destroy,
+		   unsigned long		 max_size)
+{
+    cache->hash_table = _cairo_hash_table_create (keys_equal);
+    if (unlikely (cache->hash_table == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (predicate == NULL)
+	predicate = _cairo_cache_entry_is_non_zero;
+    cache->predicate = predicate;
+    cache->entry_destroy = entry_destroy;
+
+    cache->max_size = max_size;
+    cache->size = 0;
+
+    cache->freeze_count = 0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_cache_pluck (void *entry, void *closure)
+{
+    _cairo_cache_remove (closure, entry);
+}
+
+/**
+ * _cairo_cache_fini:
+ * @cache: a cache to destroy
+ *
+ * Immediately destroys the given cache, freeing all resources
+ * associated with it. As part of this process, the entry_destroy()
+ * function, (as passed to _cairo_cache_init()), will be called for
+ * each entry in the cache.
+ **/
+void
+_cairo_cache_fini (cairo_cache_t *cache)
+{
+    _cairo_hash_table_foreach (cache->hash_table,
+			       _cairo_cache_pluck,
+			       cache);
+    assert (cache->size == 0);
+    _cairo_hash_table_destroy (cache->hash_table);
+}
+
+/**
+ * _cairo_cache_freeze:
+ * @cache: a cache with some precious entries in it (or about to be
+ * added)
+ *
+ * Disable the automatic ejection of entries from the cache. For as
+ * long as the cache is "frozen", calls to _cairo_cache_insert() will
+ * add new entries to the cache regardless of how large the cache
+ * grows. See _cairo_cache_thaw().
+ *
+ * Note: Multiple calls to _cairo_cache_freeze() will stack, in that
+ * the cache will remain "frozen" until a corresponding number of
+ * calls are made to _cairo_cache_thaw().
+ **/
+void
+_cairo_cache_freeze (cairo_cache_t *cache)
+{
+    assert (cache->freeze_count >= 0);
+
+    cache->freeze_count++;
+}
+
+/**
+ * _cairo_cache_thaw:
+ * @cache: a cache, just after the entries in it have become less
+ * precious
+ *
+ * Cancels the effects of _cairo_cache_freeze().
+ *
+ * When a number of calls to _cairo_cache_thaw() is made corresponding
+ * to the number of calls to _cairo_cache_freeze() the cache will no
+ * longer be "frozen". If the cache had grown larger than max_size
+ * while frozen, entries will immediately be ejected (by random) from
+ * the cache until the cache is smaller than max_size. Also, the
+ * automatic ejection of entries on _cairo_cache_insert() will resume.
+ **/
+void
+_cairo_cache_thaw (cairo_cache_t *cache)
+{
+    assert (cache->freeze_count > 0);
+
+    if (--cache->freeze_count == 0)
+	_cairo_cache_shrink_to_accommodate (cache, 0);
+}
+
+/**
+ * _cairo_cache_lookup:
+ * @cache: a cache
+ * @key: the key of interest
+ * @entry_return: pointer for return value
+ *
+ * Performs a lookup in @cache looking for an entry which has a key
+ * that matches @key, (as determined by the keys_equal() function
+ * passed to _cairo_cache_init()).
+ *
+ * Return value: %TRUE if there is an entry in the cache that matches
+ * @key, (which will now be in *entry_return). %FALSE otherwise, (in
+ * which case *entry_return will be %NULL).
+ **/
+void *
+_cairo_cache_lookup (cairo_cache_t	  *cache,
+		     cairo_cache_entry_t  *key)
+{
+    return _cairo_hash_table_lookup (cache->hash_table,
+				     (cairo_hash_entry_t *) key);
+}
+
+/**
+ * _cairo_cache_remove_random:
+ * @cache: a cache
+ *
+ * Remove a random entry from the cache.
+ *
+ * Return value: %TRUE if an entry was successfully removed.
+ * %FALSE if there are no entries that can be removed.
+ **/
+static cairo_bool_t
+_cairo_cache_remove_random (cairo_cache_t *cache)
+{
+    cairo_cache_entry_t *entry;
+
+    entry = _cairo_hash_table_random_entry (cache->hash_table,
+					    cache->predicate);
+    if (unlikely (entry == NULL))
+	return FALSE;
+
+    _cairo_cache_remove (cache, entry);
+
+    return TRUE;
+}
+
+/**
+ * _cairo_cache_shrink_to_accommodate:
+ * @cache: a cache
+ * @additional: additional size requested in bytes
+ *
+ * If cache is not frozen, eject entries randomly until the size of
+ * the cache is at least @additional bytes less than
+ * cache->max_size. That is, make enough room to accommodate a new
+ * entry of size @additional.
+ **/
+static void
+_cairo_cache_shrink_to_accommodate (cairo_cache_t *cache,
+				    unsigned long  additional)
+{
+    while (cache->size + additional > cache->max_size) {
+	if (! _cairo_cache_remove_random (cache))
+	    return;
+    }
+}
+
+/**
+ * _cairo_cache_insert:
+ * @cache: a cache
+ * @entry: an entry to be inserted
+ *
+ * Insert @entry into the cache. If an entry exists in the cache with
+ * a matching key, then the old entry will be removed first, (and the
+ * entry_destroy() callback will be called on it).
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if insufficient memory is available.
+ **/
+cairo_status_t
+_cairo_cache_insert (cairo_cache_t	 *cache,
+		     cairo_cache_entry_t *entry)
+{
+    cairo_status_t status;
+
+    if (entry->size && ! cache->freeze_count)
+	_cairo_cache_shrink_to_accommodate (cache, entry->size);
+
+    status = _cairo_hash_table_insert (cache->hash_table,
+				       (cairo_hash_entry_t *) entry);
+    if (unlikely (status))
+	return status;
+
+    cache->size += entry->size;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_cache_remove:
+ * @cache: a cache
+ * @entry: an entry that exists in the cache
+ *
+ * Remove an existing entry from the cache.
+ **/
+void
+_cairo_cache_remove (cairo_cache_t	 *cache,
+		     cairo_cache_entry_t *entry)
+{
+    cache->size -= entry->size;
+
+    _cairo_hash_table_remove (cache->hash_table,
+			      (cairo_hash_entry_t *) entry);
+
+    if (cache->entry_destroy)
+	cache->entry_destroy (entry);
+}
+
+/**
+ * _cairo_cache_foreach:
+ * @cache: a cache
+ * @cache_callback: function to be called for each entry
+ * @closure: additional argument to be passed to @cache_callback
+ *
+ * Call @cache_callback for each entry in the cache, in a
+ * non-specified order.
+ **/
+void
+_cairo_cache_foreach (cairo_cache_t		      *cache,
+		      cairo_cache_callback_func_t      cache_callback,
+		      void			      *closure)
+{
+    _cairo_hash_table_foreach (cache->hash_table,
+			       cache_callback,
+			       closure);
+}
+
+unsigned long
+_cairo_hash_string (const char *c)
+{
+    /* This is the djb2 hash. */
+    unsigned long hash = _CAIRO_HASH_INIT_VALUE;
+    while (c && *c)
+	hash = ((hash << 5) + hash) + *c++;
+    return hash;
+}
+
+unsigned long
+_cairo_hash_bytes (unsigned long hash,
+		   const void *ptr,
+		   unsigned int length)
+{
+    const uint8_t *bytes = ptr;
+    /* This is the djb2 hash. */
+    while (length--)
+	hash = ((hash << 5) + hash) + *bytes++;
+    return hash;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-cff-subset.c b/libs/cairo-1.16.0/src/cairo-cff-subset.c
new file mode 100644
index 0000000..37727ed
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cff-subset.c
@@ -0,0 +1,3430 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ *      Eugeniy Meshcheryakov <eugen@debian.org>
+ */
+
+/*
+ * Useful links:
+ * http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5176.CFF.pdf
+ * http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5177.Type2.pdf
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-truetype-subset-private.h"
+#include <string.h>
+#include <locale.h>
+
+/* CFF Dict Operators. If the high byte is 0 the command is encoded
+ * with a single byte. */
+#define BASEFONTNAME_OP  0x0c16
+#define CIDCOUNT_OP      0x0c22
+#define CHARSET_OP       0x000f
+#define CHARSTRINGS_OP   0x0011
+#define COPYRIGHT_OP     0x0c00
+#define DEFAULTWIDTH_OP  0x0014
+#define ENCODING_OP      0x0010
+#define FAMILYNAME_OP    0x0003
+#define FDARRAY_OP       0x0c24
+#define FDSELECT_OP      0x0c25
+#define FONTBBOX_OP      0x0005
+#define FONTMATRIX_OP    0x0c07
+#define FONTNAME_OP      0x0c26
+#define FULLNAME_OP      0x0002
+#define LOCAL_SUB_OP     0x0013
+#define NOMINALWIDTH_OP  0x0015
+#define NOTICE_OP        0x0001
+#define POSTSCRIPT_OP    0x0c15
+#define PRIVATE_OP       0x0012
+#define ROS_OP           0x0c1e
+#define UNIQUEID_OP      0x000d
+#define VERSION_OP       0x0000
+#define WEIGHT_OP        0x0004
+#define XUID_OP          0x000e
+
+#define NUM_STD_STRINGS 391
+
+/* Type 2 Charstring operators */
+#define TYPE2_hstem     0x0001
+#define TYPE2_vstem     0x0003
+#define TYPE2_callsubr  0x000a
+
+#define TYPE2_return    0x000b
+#define TYPE2_endchar   0x000e
+
+#define TYPE2_hstemhm   0x0012
+#define TYPE2_hintmask  0x0013
+#define TYPE2_cntrmask  0x0014
+#define TYPE2_vstemhm   0x0017
+#define TYPE2_callgsubr 0x001d
+
+#define TYPE2_rmoveto   0x0015
+#define TYPE2_hmoveto   0x0016
+#define TYPE2_vmoveto   0x0004
+
+
+#define MAX_SUBROUTINE_NESTING 10 /* From Type2 Charstring spec */
+
+
+typedef struct _cff_header {
+    uint8_t major;
+    uint8_t minor;
+    uint8_t header_size;
+    uint8_t offset_size;
+} cff_header_t;
+
+typedef struct _cff_index_element {
+    cairo_bool_t   is_copy;
+    unsigned char *data;
+    int            length;
+} cff_index_element_t;
+
+typedef struct _cff_dict_operator {
+    cairo_hash_entry_t base;
+
+    unsigned short operator;
+    unsigned char *operand;
+    int            operand_length;
+    int            operand_offset;
+} cff_dict_operator_t;
+
+typedef struct _cairo_cff_font {
+
+    cairo_scaled_font_subset_t *scaled_font_subset;
+    const cairo_scaled_font_backend_t *backend;
+
+    /* Font Data */
+    unsigned char       *data;
+    unsigned long        data_length;
+    unsigned char       *current_ptr;
+    unsigned char       *data_end;
+    cff_header_t        *header;
+    char                *font_name;
+    char                *ps_name;
+    cairo_hash_table_t  *top_dict;
+    cairo_hash_table_t  *private_dict;
+    cairo_array_t        strings_index;
+    cairo_array_t        charstrings_index;
+    cairo_array_t        global_sub_index;
+    cairo_array_t        local_sub_index;
+    unsigned char       *charset;
+    int                  num_glyphs;
+    cairo_bool_t         is_cid;
+    cairo_bool_t         is_opentype;
+    int  		 units_per_em;
+    int 		 global_sub_bias;
+    int			 local_sub_bias;
+    double               default_width;
+    double               nominal_width;
+
+    /* CID Font Data */
+    int                 *fdselect;
+    unsigned int         num_fontdicts;
+    cairo_hash_table_t **fd_dict;
+    cairo_hash_table_t **fd_private_dict;
+    cairo_array_t       *fd_local_sub_index;
+    int			*fd_local_sub_bias;
+    double              *fd_default_width;
+    double              *fd_nominal_width;
+
+    /* Subsetted Font Data */
+    char                *subset_font_name;
+    cairo_array_t        charstrings_subset_index;
+    cairo_array_t        strings_subset_index;
+    int			 euro_sid;
+    int                 *fdselect_subset;
+    unsigned int         num_subset_fontdicts;
+    int                 *fd_subset_map;
+    int                 *private_dict_offset;
+    cairo_bool_t         subset_subroutines;
+    cairo_bool_t	*global_subs_used;
+    cairo_bool_t	*local_subs_used;
+    cairo_bool_t       **fd_local_subs_used;
+    cairo_array_t        output;
+
+    /* Subset Metrics */
+    int                 *widths;
+    int                  x_min, y_min, x_max, y_max;
+    int                  ascent, descent;
+
+    /* Type 2 charstring data */
+    int 	 	 type2_stack_size;
+    int 		 type2_stack_top_value;
+    cairo_bool_t 	 type2_stack_top_is_int;
+    int 		 type2_num_hints;
+    int 		 type2_hintmask_bytes;
+    int                  type2_nesting_level;
+    cairo_bool_t         type2_seen_first_int;
+    cairo_bool_t         type2_find_width;
+    cairo_bool_t         type2_found_width;
+    int                  type2_width;
+    cairo_bool_t         type2_has_path;
+
+} cairo_cff_font_t;
+
+/* Encoded integer using maximum sized encoding. This is required for
+ * operands that are later modified after encoding. */
+static unsigned char *
+encode_integer_max (unsigned char *p, int i)
+{
+    *p++ = 29;
+    *p++ = i >> 24;
+    *p++ = (i >> 16) & 0xff;
+    *p++ = (i >> 8)  & 0xff;
+    *p++ = i & 0xff;
+    return p;
+}
+
+static unsigned char *
+encode_integer (unsigned char *p, int i)
+{
+    if (i >= -107 && i <= 107) {
+        *p++ = i + 139;
+    } else if (i >= 108 && i <= 1131) {
+        i -= 108;
+        *p++ = (i >> 8)+ 247;
+        *p++ = i & 0xff;
+    } else if (i >= -1131 && i <= -108) {
+        i = -i - 108;
+        *p++ = (i >> 8)+ 251;
+        *p++ = i & 0xff;
+    } else if (i >= -32768 && i <= 32767) {
+        *p++ = 28;
+        *p++ = (i >> 8)  & 0xff;
+        *p++ = i & 0xff;
+    } else {
+        p = encode_integer_max (p, i);
+    }
+    return p;
+}
+
+static unsigned char *
+decode_integer (unsigned char *p, int *integer)
+{
+    if (*p == 28) {
+        *integer = (int)(p[1]<<8 | p[2]);
+        p += 3;
+    } else if (*p == 29) {
+        *integer = (int)((p[1] << 24) | (p[2] << 16) | (p[3] << 8) | p[4]);
+        p += 5;
+    } else if (*p >= 32 && *p <= 246) {
+        *integer = *p++ - 139;
+    } else if (*p <= 250) {
+        *integer = (p[0] - 247) * 256 + p[1] + 108;
+        p += 2;
+    } else if (*p <= 254) {
+        *integer = -(p[0] - 251) * 256 - p[1] - 108;
+        p += 2;
+    } else {
+        *integer = 0;
+        p += 1;
+    }
+    return p;
+}
+
+static char *
+decode_nibble (int n, char *buf)
+{
+    switch (n)
+    {
+    case 0xa:
+	*buf++ = '.';
+	break;
+    case 0xb:
+	*buf++ = 'E';
+	break;
+    case 0xc:
+	*buf++ = 'E';
+	*buf++ = '-';
+	break;
+    case 0xd:
+	*buf++ = '-';
+	break;
+    case 0xe:
+	*buf++ = '-';
+	break;
+    case 0xf:
+	break;
+    default:
+	*buf++ = '0' + n;
+	break;
+    }
+
+    return buf;
+}
+
+static unsigned char *
+decode_real (unsigned char *p, double *real)
+{
+    char buffer[100];
+    char *buf = buffer;
+    char *buf_end = buffer + sizeof (buffer);
+    char *end;
+    int n;
+
+    p++;
+    while (buf + 2 < buf_end) {
+	n = *p >> 4;
+	buf = decode_nibble (n, buf);
+	n = *p & 0x0f;
+	buf = decode_nibble (n, buf);
+        if ((*p & 0x0f) == 0x0f) {
+	    p++;
+            break;
+	}
+	p++;
+    };
+    *buf = 0;
+
+    *real = _cairo_strtod (buffer, &end);
+
+    return p;
+}
+
+static unsigned char *
+decode_number (unsigned char *p, double *number)
+{
+    if (*p == 30) {
+        p = decode_real (p, number);
+    } else {
+        int i;
+        p = decode_integer (p, &i);
+        *number = i;
+    }
+    return p;
+}
+
+static unsigned char *
+decode_operator (unsigned char *p, unsigned short *operator)
+{
+    unsigned short op = 0;
+
+    op = *p++;
+    if (op == 12) {
+        op <<= 8;
+        op |= *p++;
+    }
+    *operator = op;
+    return p;
+}
+
+/* return 0 if not an operand */
+static int
+operand_length (unsigned char *p)
+{
+    unsigned char *begin = p;
+
+    if (*p == 28)
+        return 3;
+
+    if (*p == 29)
+        return 5;
+
+    if (*p >= 32 && *p <= 246)
+        return 1;
+
+    if (*p >= 247 && *p <= 254)
+        return 2;
+
+    if (*p == 30) {
+        while ((*p & 0x0f) != 0x0f)
+            p++;
+        return p - begin + 1;
+    }
+
+    return 0;
+}
+
+static unsigned char *
+encode_index_offset (unsigned char *p, int offset_size, unsigned long offset)
+{
+    while (--offset_size >= 0) {
+        p[offset_size] = (unsigned char) (offset & 0xff);
+        offset >>= 8;
+    }
+    return p + offset_size;
+}
+
+static unsigned long
+decode_index_offset(unsigned char *p, int off_size)
+{
+    unsigned long offset = 0;
+
+    while (off_size-- > 0)
+        offset = offset*256 + *p++;
+    return offset;
+}
+
+static void
+cff_index_init (cairo_array_t *index)
+{
+    _cairo_array_init (index, sizeof (cff_index_element_t));
+}
+
+static cairo_int_status_t
+cff_index_read (cairo_array_t *index, unsigned char **ptr, unsigned char *end_ptr)
+{
+    cff_index_element_t element;
+    unsigned char *data, *p;
+    cairo_status_t status;
+    int offset_size, count, start, i;
+    int end = 0;
+
+    p = *ptr;
+    if (p + 2 > end_ptr)
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+    count = get_unaligned_be16 (p);
+    p += 2;
+    if (count > 0) {
+        offset_size = *p++;
+        if (p + (count + 1)*offset_size > end_ptr)
+            return CAIRO_INT_STATUS_UNSUPPORTED;
+        data = p + offset_size*(count + 1) - 1;
+        start = decode_index_offset (p, offset_size);
+        p += offset_size;
+        for (i = 0; i < count; i++) {
+            end = decode_index_offset (p, offset_size);
+            p += offset_size;
+            if (p > end_ptr)
+                return CAIRO_INT_STATUS_UNSUPPORTED;
+            element.length = end - start;
+            element.is_copy = FALSE;
+            element.data = data + start;
+            status = _cairo_array_append (index, &element);
+            if (unlikely (status))
+                return status;
+            start = end;
+        }
+        p = data + end;
+    }
+    *ptr = p;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cff_index_write (cairo_array_t *index, cairo_array_t *output)
+{
+    int offset_size;
+    int offset;
+    int num_elem;
+    int i;
+    cff_index_element_t *element;
+    uint16_t count;
+    unsigned char buf[5];
+    cairo_status_t status;
+
+    num_elem = _cairo_array_num_elements (index);
+    count = cpu_to_be16 ((uint16_t) num_elem);
+    status = _cairo_array_append_multiple (output, &count, 2);
+    if (unlikely (status))
+        return status;
+
+    if (num_elem == 0)
+        return CAIRO_STATUS_SUCCESS;
+
+    /* Find maximum offset to determine offset size */
+    offset = 1;
+    for (i = 0; i < num_elem; i++) {
+        element = _cairo_array_index (index, i);
+        offset += element->length;
+    }
+    if (offset < 0x100)
+        offset_size = 1;
+    else if (offset < 0x10000)
+        offset_size = 2;
+    else if (offset < 0x1000000)
+        offset_size = 3;
+    else
+        offset_size = 4;
+
+    buf[0] = (unsigned char) offset_size;
+    status = _cairo_array_append (output, buf);
+    if (unlikely (status))
+        return status;
+
+    offset = 1;
+    encode_index_offset (buf, offset_size, offset);
+    status = _cairo_array_append_multiple (output, buf, offset_size);
+    if (unlikely (status))
+        return status;
+
+    for (i = 0; i < num_elem; i++) {
+        element = _cairo_array_index (index, i);
+        offset += element->length;
+        encode_index_offset (buf, offset_size, offset);
+        status = _cairo_array_append_multiple (output, buf, offset_size);
+        if (unlikely (status))
+            return status;
+    }
+
+    for (i = 0; i < num_elem; i++) {
+        element = _cairo_array_index (index, i);
+        if (element->length > 0) {
+            status = _cairo_array_append_multiple (output,
+                                                   element->data,
+                                                   element->length);
+        }
+        if (unlikely (status))
+            return status;
+    }
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+cff_index_set_object (cairo_array_t *index, int obj_index,
+                      unsigned char *object , int length)
+{
+    cff_index_element_t *element;
+
+    element = _cairo_array_index (index, obj_index);
+    if (element->is_copy)
+        free (element->data);
+
+    element->data = object;
+    element->length = length;
+    element->is_copy = FALSE;
+}
+
+static cairo_status_t
+cff_index_append (cairo_array_t *index, unsigned char *object , int length)
+{
+    cff_index_element_t element;
+
+    element.length = length;
+    element.is_copy = FALSE;
+    element.data = object;
+
+    return _cairo_array_append (index, &element);
+}
+
+static cairo_status_t
+cff_index_append_copy (cairo_array_t *index,
+                       const unsigned char *object,
+                       unsigned int length)
+{
+    cff_index_element_t element;
+    cairo_status_t status;
+
+    element.length = length;
+    element.is_copy = TRUE;
+    element.data = _cairo_malloc (element.length);
+    if (unlikely (element.data == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    memcpy (element.data, object, element.length);
+
+    status = _cairo_array_append (index, &element);
+    if (unlikely (status)) {
+	free (element.data);
+	return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+cff_index_fini (cairo_array_t *index)
+{
+    cff_index_element_t *element;
+    unsigned int i;
+
+    for (i = 0; i < _cairo_array_num_elements (index); i++) {
+        element = _cairo_array_index (index, i);
+        if (element->is_copy && element->data)
+            free (element->data);
+    }
+    _cairo_array_fini (index);
+}
+
+static cairo_bool_t
+_cairo_cff_dict_equal (const void *key_a, const void *key_b)
+{
+    const cff_dict_operator_t *op_a = key_a;
+    const cff_dict_operator_t *op_b = key_b;
+
+    return op_a->operator == op_b->operator;
+}
+
+static cairo_status_t
+cff_dict_init (cairo_hash_table_t **dict)
+{
+    *dict = _cairo_hash_table_create (_cairo_cff_dict_equal);
+    if (unlikely (*dict == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_dict_init_key (cff_dict_operator_t *key, int operator)
+{
+    key->base.hash = (unsigned long) operator;
+    key->operator = operator;
+}
+
+static cairo_status_t
+cff_dict_create_operator (int            operator,
+                          unsigned char *operand,
+                          int            size,
+			  cff_dict_operator_t **out)
+{
+    cff_dict_operator_t *op;
+
+    op = _cairo_malloc (sizeof (cff_dict_operator_t));
+    if (unlikely (op == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_dict_init_key (op, operator);
+    op->operand = _cairo_malloc (size);
+    if (unlikely (op->operand == NULL)) {
+        free (op);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    memcpy (op->operand, operand, size);
+    op->operand_length = size;
+    op->operand_offset = -1;
+
+    *out = op;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cff_dict_read (cairo_hash_table_t *dict, unsigned char *p, int dict_size)
+{
+    unsigned char *end;
+    cairo_array_t operands;
+    cff_dict_operator_t *op;
+    unsigned short operator;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    int size;
+
+    end = p + dict_size;
+    _cairo_array_init (&operands, 1);
+    while (p < end) {
+        size = operand_length (p);
+        if (size != 0) {
+            status = _cairo_array_append_multiple (&operands, p, size);
+            if (unlikely (status))
+                goto fail;
+
+            p += size;
+        } else {
+            p = decode_operator (p, &operator);
+            status = cff_dict_create_operator (operator,
+                                          _cairo_array_index (&operands, 0),
+                                          _cairo_array_num_elements (&operands),
+					  &op);
+            if (unlikely (status))
+                goto fail;
+
+            status = _cairo_hash_table_insert (dict, &op->base);
+            if (unlikely (status))
+                goto fail;
+
+            _cairo_array_truncate (&operands, 0);
+        }
+    }
+
+fail:
+    _cairo_array_fini (&operands);
+
+    return status;
+}
+
+static void
+cff_dict_remove (cairo_hash_table_t *dict, unsigned short operator)
+{
+    cff_dict_operator_t key, *op;
+
+    _cairo_dict_init_key (&key, operator);
+    op = _cairo_hash_table_lookup (dict, &key.base);
+    if (op != NULL) {
+        free (op->operand);
+        _cairo_hash_table_remove (dict, (cairo_hash_entry_t *) op);
+        free (op);
+    }
+}
+
+static unsigned char *
+cff_dict_get_operands (cairo_hash_table_t *dict,
+                       unsigned short      operator,
+                       int                *size)
+{
+    cff_dict_operator_t key, *op;
+
+    _cairo_dict_init_key (&key, operator);
+    op = _cairo_hash_table_lookup (dict, &key.base);
+    if (op != NULL) {
+        *size = op->operand_length;
+        return op->operand;
+    }
+
+    return NULL;
+}
+
+static cairo_status_t
+cff_dict_set_operands (cairo_hash_table_t *dict,
+                       unsigned short      operator,
+                       unsigned char      *operand,
+                       int                 size)
+{
+    cff_dict_operator_t key, *op;
+    cairo_status_t status;
+
+    _cairo_dict_init_key (&key, operator);
+    op = _cairo_hash_table_lookup (dict, &key.base);
+    if (op != NULL) {
+        free (op->operand);
+        op->operand = _cairo_malloc (size);
+	if (unlikely (op->operand == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+        memcpy (op->operand, operand, size);
+        op->operand_length = size;
+    }
+    else
+    {
+        status = cff_dict_create_operator (operator, operand, size, &op);
+        if (unlikely (status))
+	    return status;
+
+	status = _cairo_hash_table_insert (dict, &op->base);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static int
+cff_dict_get_location (cairo_hash_table_t *dict,
+                       unsigned short      operator,
+                       int                *size)
+{
+    cff_dict_operator_t key, *op;
+
+    _cairo_dict_init_key (&key, operator);
+    op = _cairo_hash_table_lookup (dict, &key.base);
+    if (op != NULL) {
+        *size = op->operand_length;
+        return op->operand_offset;
+    }
+
+    return -1;
+}
+
+typedef struct _dict_write_info {
+    cairo_array_t *output;
+    cairo_status_t status;
+} dict_write_info_t;
+
+static void
+cairo_dict_write_operator (cff_dict_operator_t *op, dict_write_info_t *write_info)
+{
+    unsigned char data;
+
+    op->operand_offset = _cairo_array_num_elements (write_info->output);
+    write_info->status = _cairo_array_append_multiple (write_info->output, op->operand, op->operand_length);
+    if (write_info->status)
+        return;
+
+    if (op->operator & 0xff00) {
+        data = op->operator >> 8;
+        write_info->status = _cairo_array_append (write_info->output, &data);
+        if (write_info->status)
+            return;
+    }
+    data = op->operator & 0xff;
+    write_info->status = _cairo_array_append (write_info->output, &data);
+}
+
+static void
+_cairo_dict_collect (void *entry, void *closure)
+{
+    dict_write_info_t   *write_info = closure;
+    cff_dict_operator_t *op = entry;
+
+    if (write_info->status)
+        return;
+
+    /* The ROS operator is handled separately in cff_dict_write() */
+    if (op->operator != ROS_OP)
+        cairo_dict_write_operator (op, write_info);
+}
+
+static cairo_status_t
+cff_dict_write (cairo_hash_table_t *dict, cairo_array_t *output)
+{
+    dict_write_info_t write_info;
+    cff_dict_operator_t key, *op;
+
+    write_info.output = output;
+    write_info.status = CAIRO_STATUS_SUCCESS;
+
+    /* The CFF specification requires that the Top Dict of CID fonts
+     * begin with the ROS operator. */
+    _cairo_dict_init_key (&key, ROS_OP);
+    op = _cairo_hash_table_lookup (dict, &key.base);
+    if (op != NULL)
+        cairo_dict_write_operator (op, &write_info);
+
+    _cairo_hash_table_foreach (dict, _cairo_dict_collect, &write_info);
+
+    return write_info.status;
+}
+
+static void
+_cff_dict_entry_pluck (void *_entry, void *dict)
+{
+    cff_dict_operator_t *entry = _entry;
+
+    _cairo_hash_table_remove (dict, &entry->base);
+    free (entry->operand);
+    free (entry);
+}
+
+static void
+cff_dict_fini (cairo_hash_table_t *dict)
+{
+    _cairo_hash_table_foreach (dict, _cff_dict_entry_pluck, dict);
+    _cairo_hash_table_destroy (dict);
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_header (cairo_cff_font_t *font)
+{
+    if (font->data_length < sizeof (cff_header_t))
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+
+
+    font->header = (cff_header_t *) font->data;
+    font->current_ptr = font->data + font->header->header_size;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_name (cairo_cff_font_t *font)
+{
+    cairo_array_t index;
+    cairo_int_status_t status;
+    cff_index_element_t *element;
+    unsigned char *p;
+    int i, len;
+
+    cff_index_init (&index);
+    status = cff_index_read (&index, &font->current_ptr, font->data_end);
+    if (!font->is_opentype) {
+        element = _cairo_array_index (&index, 0);
+	p = element->data;
+	len = element->length;
+
+	/* If font name is prefixed with a subset tag, strip it off. */
+	if (len > 7 && p[6] == '+') {
+	    for (i = 0; i < 6; i++)
+		if (p[i] < 'A' || p[i] > 'Z')
+		    break;
+	    if (i == 6) {
+		p += 7;
+		len -= 7;
+	    }
+	}
+        font->ps_name = _cairo_malloc (len + 1);
+        if (unlikely (font->ps_name == NULL))
+            return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+        memcpy (font->ps_name, p, len);
+        font->ps_name[len] = 0;
+
+        status = _cairo_escape_ps_name (&font->ps_name);
+    }
+    cff_index_fini (&index);
+
+    return status;
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_private_dict (cairo_cff_font_t   *font,
+                                  cairo_hash_table_t *private_dict,
+                                  cairo_array_t      *local_sub_index,
+                                  int                *local_sub_bias,
+                                  cairo_bool_t      **local_subs_used,
+                                  double             *default_width,
+                                  double             *nominal_width,
+                                  unsigned char      *ptr,
+                                  int                 size)
+{
+    cairo_int_status_t status;
+    unsigned char buf[10];
+    unsigned char *end_buf;
+    int offset;
+    int i;
+    unsigned char *operand;
+    unsigned char *p;
+    int num_subs;
+
+    status = cff_dict_read (private_dict, ptr, size);
+    if (unlikely (status))
+	return status;
+
+    operand = cff_dict_get_operands (private_dict, LOCAL_SUB_OP, &i);
+    if (operand) {
+        decode_integer (operand, &offset);
+        p = ptr + offset;
+        status = cff_index_read (local_sub_index, &p, font->data_end);
+	if (unlikely (status))
+	    return status;
+
+	/* Use maximum sized encoding to reserve space for later modification. */
+	end_buf = encode_integer_max (buf, 0);
+	status = cff_dict_set_operands (private_dict, LOCAL_SUB_OP, buf, end_buf - buf);
+	if (unlikely (status))
+	    return status;
+    }
+
+    *default_width = 0;
+    operand = cff_dict_get_operands (private_dict, DEFAULTWIDTH_OP, &i);
+    if (operand)
+        decode_number (operand, default_width);
+
+    *nominal_width = 0;
+    operand = cff_dict_get_operands (private_dict, NOMINALWIDTH_OP, &i);
+    if (operand)
+	 decode_number (operand, nominal_width);
+
+    num_subs = _cairo_array_num_elements (local_sub_index);
+    *local_subs_used = calloc (num_subs, sizeof (cairo_bool_t));
+    if (unlikely (*local_subs_used == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (num_subs < 1240)
+	*local_sub_bias = 107;
+    else if (num_subs < 33900)
+	*local_sub_bias = 1131;
+    else
+	*local_sub_bias = 32768;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_fdselect (cairo_cff_font_t *font, unsigned char *p)
+{
+    int type, num_ranges, first, last, fd, i, j;
+
+    font->fdselect = calloc (font->num_glyphs, sizeof (int));
+    if (unlikely (font->fdselect == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    type = *p++;
+    if (type == 0)
+    {
+        for (i = 0; i < font->num_glyphs; i++)
+            font->fdselect[i] = *p++;
+    } else if (type == 3) {
+        num_ranges = get_unaligned_be16 (p);
+        p += 2;
+        for  (i = 0; i < num_ranges; i++)
+        {
+            first = get_unaligned_be16 (p);
+            p += 2;
+            fd = *p++;
+            last = get_unaligned_be16 (p);
+            for (j = first; j < last; j++)
+                font->fdselect[j] = fd;
+        }
+    } else {
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_cid_fontdict (cairo_cff_font_t *font, unsigned char *ptr)
+{
+    cairo_array_t index;
+    cff_index_element_t *element;
+    unsigned int i;
+    int size;
+    unsigned char *operand;
+    int offset;
+    cairo_int_status_t status;
+    unsigned char buf[100];
+    unsigned char *end_buf;
+
+    cff_index_init (&index);
+    status = cff_index_read (&index, &ptr, font->data_end);
+    if (unlikely (status))
+        goto fail;
+
+    font->num_fontdicts = _cairo_array_num_elements (&index);
+
+    font->fd_dict = calloc (sizeof (cairo_hash_table_t *), font->num_fontdicts);
+    if (unlikely (font->fd_dict == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    font->fd_private_dict = calloc (sizeof (cairo_hash_table_t *), font->num_fontdicts);
+    if (unlikely (font->fd_private_dict == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    font->fd_local_sub_index = calloc (sizeof (cairo_array_t), font->num_fontdicts);
+    if (unlikely (font->fd_local_sub_index == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    font->fd_local_sub_bias = calloc (sizeof (int), font->num_fontdicts);
+    if (unlikely (font->fd_local_sub_bias == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    font->fd_local_subs_used = calloc (sizeof (cairo_bool_t *), font->num_fontdicts);
+    if (unlikely (font->fd_local_subs_used == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    font->fd_default_width = calloc (font->num_fontdicts, sizeof (double));
+    if (unlikely (font->fd_default_width == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    font->fd_nominal_width = calloc (font->num_fontdicts, sizeof (double));
+    if (unlikely (font->fd_nominal_width == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail;
+    }
+
+    for (i = 0; i < font->num_fontdicts; i++) {
+        status = cff_dict_init (&font->fd_dict[i]);
+        if (unlikely (status))
+            goto fail;
+
+        element = _cairo_array_index (&index, i);
+        status = cff_dict_read (font->fd_dict[i], element->data, element->length);
+        if (unlikely (status))
+            goto fail;
+
+        operand = cff_dict_get_operands (font->fd_dict[i], PRIVATE_OP, &size);
+        if (operand == NULL) {
+            status = CAIRO_INT_STATUS_UNSUPPORTED;
+            goto fail;
+        }
+        operand = decode_integer (operand, &size);
+        decode_integer (operand, &offset);
+        status = cff_dict_init (&font->fd_private_dict[i]);
+	if (unlikely (status))
+            goto fail;
+
+        cff_index_init (&font->fd_local_sub_index[i]);
+        status = cairo_cff_font_read_private_dict (font,
+                                                   font->fd_private_dict[i],
+                                                   &font->fd_local_sub_index[i],
+                                                   &font->fd_local_sub_bias[i],
+                                                   &font->fd_local_subs_used[i],
+                                                   &font->fd_default_width[i],
+                                                   &font->fd_nominal_width[i],
+                                                   font->data + offset,
+                                                   size);
+        if (unlikely (status))
+            goto fail;
+
+	/* Set integer operand to max value to use max size encoding to reserve
+         * space for any value later */
+        end_buf = encode_integer_max (buf, 0);
+        end_buf = encode_integer_max (end_buf, 0);
+        status = cff_dict_set_operands (font->fd_dict[i], PRIVATE_OP, buf, end_buf - buf);
+        if (unlikely (status))
+            goto fail;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+fail:
+    cff_index_fini (&index);
+
+    return status;
+}
+
+static void
+cairo_cff_font_read_font_metrics (cairo_cff_font_t *font, cairo_hash_table_t  *top_dict)
+{
+    unsigned char *p;
+    unsigned char *end;
+    int size;
+    double x_min, y_min, x_max, y_max;
+    double xx, yx, xy, yy;
+
+    x_min = 0.0;
+    y_min = 0.0;
+    x_max = 0.0;
+    y_max = 0.0;
+    p = cff_dict_get_operands (font->top_dict, FONTBBOX_OP, &size);
+    if (p) {
+        end = p + size;
+        if (p < end)
+            p = decode_number (p, &x_min);
+        if (p < end)
+            p = decode_number (p, &y_min);
+        if (p < end)
+            p = decode_number (p, &x_max);
+        if (p < end)
+            p = decode_number (p, &y_max);
+    }
+    font->x_min = floor (x_min);
+    font->y_min = floor (y_min);
+    font->x_max = floor (x_max);
+    font->y_max = floor (y_max);
+    font->ascent = font->y_max;
+    font->descent = font->y_min;
+
+    xx = 0.001;
+    yx = 0.0;
+    xy = 0.0;
+    yy = 0.001;
+    p = cff_dict_get_operands (font->top_dict, FONTMATRIX_OP, &size);
+    if (p) {
+        end = p + size;
+        if (p < end)
+            p = decode_number (p, &xx);
+        if (p < end)
+            p = decode_number (p, &yx);
+        if (p < end)
+            p = decode_number (p, &xy);
+        if (p < end)
+            p = decode_number (p, &yy);
+    }
+    /* Freetype uses 1/abs(yy) to get units per EM */
+    font->units_per_em = _cairo_round(1.0/fabs(yy));
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_top_dict (cairo_cff_font_t *font)
+{
+    cairo_array_t index;
+    cff_index_element_t *element;
+    unsigned char buf[20];
+    unsigned char *end_buf;
+    unsigned char *operand;
+    cairo_int_status_t status;
+    unsigned char *p;
+    int size;
+    int offset;
+
+    cff_index_init (&index);
+    status = cff_index_read (&index, &font->current_ptr, font->data_end);
+    if (unlikely (status))
+        goto fail;
+
+    element = _cairo_array_index (&index, 0);
+    status = cff_dict_read (font->top_dict, element->data, element->length);
+    if (unlikely (status))
+        goto fail;
+
+    if (cff_dict_get_operands (font->top_dict, ROS_OP, &size) != NULL)
+        font->is_cid = TRUE;
+    else
+        font->is_cid = FALSE;
+
+    operand = cff_dict_get_operands (font->top_dict, CHARSTRINGS_OP, &size);
+    decode_integer (operand, &offset);
+    p = font->data + offset;
+    status = cff_index_read (&font->charstrings_index, &p, font->data_end);
+    if (unlikely (status))
+        goto fail;
+    font->num_glyphs = _cairo_array_num_elements (&font->charstrings_index);
+
+    if (font->is_cid) {
+	 operand = cff_dict_get_operands (font->top_dict, CHARSET_OP, &size);
+	 if (!operand)
+	      return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	 decode_integer (operand, &offset);
+	 font->charset = font->data + offset;
+	 if (font->charset >= font->data_end)
+	      return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (!font->is_opentype)
+        cairo_cff_font_read_font_metrics (font, font->top_dict);
+
+    if (font->is_cid) {
+        operand = cff_dict_get_operands (font->top_dict, FDSELECT_OP, &size);
+        decode_integer (operand, &offset);
+        status = cairo_cff_font_read_fdselect (font, font->data + offset);
+	if (unlikely (status))
+	    goto fail;
+
+        operand = cff_dict_get_operands (font->top_dict, FDARRAY_OP, &size);
+        decode_integer (operand, &offset);
+        status = cairo_cff_font_read_cid_fontdict (font, font->data + offset);
+	if (unlikely (status))
+	    goto fail;
+    } else {
+        operand = cff_dict_get_operands (font->top_dict, PRIVATE_OP, &size);
+        operand = decode_integer (operand, &size);
+        decode_integer (operand, &offset);
+	status = cairo_cff_font_read_private_dict (font,
+                                                   font->private_dict,
+						   &font->local_sub_index,
+						   &font->local_sub_bias,
+						   &font->local_subs_used,
+                                                   &font->default_width,
+                                                   &font->nominal_width,
+						   font->data + offset,
+						   size);
+	if (unlikely (status))
+	    goto fail;
+    }
+
+    /* Use maximum sized encoding to reserve space for later modification. */
+    end_buf = encode_integer_max (buf, 0);
+    status = cff_dict_set_operands (font->top_dict,
+	                            CHARSTRINGS_OP, buf, end_buf - buf);
+    if (unlikely (status))
+	goto fail;
+
+    status = cff_dict_set_operands (font->top_dict,
+	                            CHARSET_OP, buf, end_buf - buf);
+    if (unlikely (status))
+	goto fail;
+
+    if (font->scaled_font_subset->is_latin) {
+        status = cff_dict_set_operands (font->top_dict,
+                                        ENCODING_OP, buf, end_buf - buf);
+        if (unlikely (status))
+            goto fail;
+
+	/* Private has two operands - size and offset */
+	end_buf = encode_integer_max (end_buf, 0);
+	cff_dict_set_operands (font->top_dict, PRIVATE_OP, buf, end_buf - buf);
+        if (unlikely (status))
+            goto fail;
+
+    } else {
+        status = cff_dict_set_operands (font->top_dict,
+                                        FDSELECT_OP, buf, end_buf - buf);
+        if (unlikely (status))
+            goto fail;
+
+        status = cff_dict_set_operands (font->top_dict,
+                                        FDARRAY_OP, buf, end_buf - buf);
+        if (unlikely (status))
+            goto fail;
+
+        cff_dict_remove (font->top_dict, ENCODING_OP);
+        cff_dict_remove (font->top_dict, PRIVATE_OP);
+    }
+
+    /* Remove the unique identifier operators as the subsetted font is
+     * not the same is the original font. */
+    cff_dict_remove (font->top_dict, UNIQUEID_OP);
+    cff_dict_remove (font->top_dict, XUID_OP);
+
+fail:
+    cff_index_fini (&index);
+
+    return status;
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_strings (cairo_cff_font_t *font)
+{
+    return cff_index_read (&font->strings_index, &font->current_ptr, font->data_end);
+}
+
+static cairo_int_status_t
+cairo_cff_font_read_global_subroutines (cairo_cff_font_t *font)
+{
+    cairo_int_status_t status;
+    int num_subs;
+
+    status = cff_index_read (&font->global_sub_index, &font->current_ptr, font->data_end);
+    if (unlikely (status))
+	return status;
+
+    num_subs = _cairo_array_num_elements (&font->global_sub_index);
+    font->global_subs_used = calloc (num_subs, sizeof(cairo_bool_t));
+    if (unlikely (font->global_subs_used == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (num_subs < 1240)
+        font->global_sub_bias = 107;
+    else if (num_subs < 33900)
+        font->global_sub_bias = 1131;
+    else
+        font->global_sub_bias = 32768;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+typedef cairo_int_status_t
+(*font_read_t) (cairo_cff_font_t *font);
+
+static const font_read_t font_read_funcs[] = {
+    cairo_cff_font_read_header,
+    cairo_cff_font_read_name,
+    cairo_cff_font_read_top_dict,
+    cairo_cff_font_read_strings,
+    cairo_cff_font_read_global_subroutines,
+};
+
+static cairo_int_status_t
+cairo_cff_font_read_font (cairo_cff_font_t *font)
+{
+    cairo_int_status_t status;
+    unsigned int i;
+
+    for (i = 0; i < ARRAY_LENGTH (font_read_funcs); i++) {
+        status = font_read_funcs[i] (font);
+        if (unlikely (status))
+            return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_set_ros_strings (cairo_cff_font_t *font)
+{
+    cairo_status_t status;
+    unsigned char buf[30];
+    unsigned char *p;
+    int sid1, sid2;
+    const char *registry = "Adobe";
+    const char *ordering = "Identity";
+
+    sid1 = NUM_STD_STRINGS + _cairo_array_num_elements (&font->strings_subset_index);
+    status = cff_index_append_copy (&font->strings_subset_index,
+                                    (unsigned char *)registry,
+                                    strlen(registry));
+    if (unlikely (status))
+	return status;
+
+    sid2 = NUM_STD_STRINGS + _cairo_array_num_elements (&font->strings_subset_index);
+    status = cff_index_append_copy (&font->strings_subset_index,
+                                    (unsigned char *)ordering,
+				    strlen(ordering));
+    if (unlikely (status))
+	return status;
+
+    p = encode_integer (buf, sid1);
+    p = encode_integer (p, sid2);
+    p = encode_integer (p, 0);
+    status = cff_dict_set_operands (font->top_dict, ROS_OP, buf, p - buf);
+    if (unlikely (status))
+	return status;
+
+    p = encode_integer (buf, font->scaled_font_subset->num_glyphs);
+    status = cff_dict_set_operands (font->top_dict, CIDCOUNT_OP, buf, p - buf);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_subset_dict_string(cairo_cff_font_t   *font,
+                                  cairo_hash_table_t *dict,
+                                  int                 operator)
+{
+    int size;
+    unsigned char *p;
+    int sid;
+    unsigned char buf[100];
+    cff_index_element_t *element;
+    cairo_status_t status;
+
+    p = cff_dict_get_operands (dict, operator, &size);
+    if (!p)
+        return CAIRO_STATUS_SUCCESS;
+
+    decode_integer (p, &sid);
+    if (sid < NUM_STD_STRINGS)
+        return CAIRO_STATUS_SUCCESS;
+
+    element = _cairo_array_index (&font->strings_index, sid - NUM_STD_STRINGS);
+    sid = NUM_STD_STRINGS + _cairo_array_num_elements (&font->strings_subset_index);
+    status = cff_index_append (&font->strings_subset_index, element->data, element->length);
+    if (unlikely (status))
+        return status;
+
+    p = encode_integer (buf, sid);
+    status = cff_dict_set_operands (dict, operator, buf, p - buf);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const int dict_strings[] = {
+    VERSION_OP,
+    NOTICE_OP,
+    COPYRIGHT_OP,
+    FULLNAME_OP,
+    FAMILYNAME_OP,
+    WEIGHT_OP,
+    POSTSCRIPT_OP,
+    BASEFONTNAME_OP,
+    FONTNAME_OP,
+};
+
+static cairo_status_t
+cairo_cff_font_subset_dict_strings (cairo_cff_font_t   *font,
+                                    cairo_hash_table_t *dict)
+{
+    cairo_status_t status;
+    unsigned int i;
+
+    for (i = 0; i < ARRAY_LENGTH (dict_strings); i++) {
+        status = cairo_cff_font_subset_dict_string (font, dict, dict_strings[i]);
+        if (unlikely (status))
+            return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static unsigned char *
+type2_decode_integer (unsigned char *p, int *integer)
+{
+    if (*p == 28) {
+	*integer = p[1] << 8 | p[2];
+	p += 3;
+    } else if (*p <= 246) {
+        *integer = *p++ - 139;
+    } else if (*p <= 250) {
+        *integer = (p[0] - 247) * 256 + p[1] + 108;
+        p += 2;
+    } else if (*p <= 254) {
+        *integer = -(p[0] - 251) * 256 - p[1] - 108;
+        p += 2;
+    } else { /* *p == 255 */
+	 /* 16.16 fixed-point number. The fraction is ignored. */
+	 *integer = (int16_t)((p[1] << 8) | p[2]);
+        p += 5;
+    }
+    return p;
+}
+
+/* Type 2 charstring parser for finding calls to local or global
+ * subroutines. For non Opentype CFF fonts it also gets the glyph
+ * widths.
+ *
+ * When we find a subroutine operator, the subroutine is marked as in
+ * use and recursively followed. The subroutine number is the value on
+ * the top of the stack when the subroutine operator is executed. In
+ * most fonts the subroutine number is encoded in an integer
+ * immediately preceding the subroutine operator. However it is
+ * possible for the subroutine number on the stack to be the result of
+ * a computation (in which case there will be an operator preceding
+ * the subroutine operator). If this occurs, subroutine subsetting is
+ * disabled since we can't easily determine which subroutines are
+ * used.
+ *
+ * The width, if present, is the first integer in the charstring. The
+ * only way to confirm if the integer at the start of the charstring is
+ * the width is when the first stack clearing operator is parsed,
+ * check if there is an extra integer left over on the stack.
+ *
+ * When the first stack clearing operator is encountered
+ * type2_find_width is set to FALSE and type2_found_width is set to
+ * TRUE if an extra argument is found, otherwise FALSE.
+ */
+static cairo_status_t
+cairo_cff_parse_charstring (cairo_cff_font_t *font,
+                            unsigned char *charstring, int length,
+                            int glyph_id,
+			    cairo_bool_t need_width)
+{
+    unsigned char *p = charstring;
+    unsigned char *end = charstring + length;
+    int integer;
+    int hint_bytes;
+    int sub_num;
+    cff_index_element_t *element;
+    int fd;
+
+    while (p < end) {
+        if (*p == 28 || *p >= 32) {
+            /* Integer value */
+            p = type2_decode_integer (p, &integer);
+            font->type2_stack_size++;
+            font->type2_stack_top_value = integer;
+            font->type2_stack_top_is_int = TRUE;
+	    if (!font->type2_seen_first_int) {
+		font->type2_width = integer;
+		font->type2_seen_first_int = TRUE;
+	    }
+	} else if (*p == TYPE2_hstem || *p == TYPE2_vstem ||
+		   *p == TYPE2_hstemhm || *p == TYPE2_vstemhm) {
+            /* Hint operator. The number of hints declared by the
+             * operator depends on the size of the stack. */
+	    font->type2_stack_top_is_int = FALSE;
+	    font->type2_num_hints += font->type2_stack_size/2;
+	    if (font->type2_find_width && font->type2_stack_size % 2)
+		font->type2_found_width = TRUE;
+
+	    font->type2_stack_size = 0;
+	    font->type2_find_width = FALSE;
+	    p++;
+	} else if (*p == TYPE2_hintmask || *p == TYPE2_cntrmask) {
+	    /* Hintmask operator. These operators are followed by a
+	     * variable length mask where the length depends on the
+	     * number of hints declared. The first time this is called
+	     * it is also an implicit vstem if there are arguments on
+	     * the stack. */
+	    if (font->type2_hintmask_bytes == 0) {
+		font->type2_stack_top_is_int = FALSE;
+		font->type2_num_hints += font->type2_stack_size/2;
+		if (font->type2_find_width && font->type2_stack_size % 2)
+		    font->type2_found_width = TRUE;
+
+		font->type2_stack_size = 0;
+		font->type2_find_width = FALSE;
+		font->type2_hintmask_bytes = (font->type2_num_hints+7)/8;
+	    }
+
+	    hint_bytes = font->type2_hintmask_bytes;
+	    p++;
+	    p += hint_bytes;
+	} else if (*p == TYPE2_rmoveto) {
+	    if (font->type2_find_width && font->type2_stack_size > 2)
+		font->type2_found_width = TRUE;
+
+	    font->type2_stack_size = 0;
+	    font->type2_find_width = FALSE;
+	    font->type2_has_path = TRUE;
+	    p++;
+	} else if (*p == TYPE2_hmoveto || *p == TYPE2_vmoveto) {
+	    if (font->type2_find_width && font->type2_stack_size > 1)
+		font->type2_found_width = TRUE;
+
+	    font->type2_stack_size = 0;
+	    font->type2_find_width = FALSE;
+	    font->type2_has_path = TRUE;
+	    p++;
+	} else if (*p == TYPE2_endchar) {
+	    if (!font->type2_has_path && font->type2_stack_size > 3)
+		return CAIRO_INT_STATUS_UNSUPPORTED; /* seac (Ref Appendix C of Type 2 Charstring Format */
+
+	    if (font->type2_find_width && font->type2_stack_size > 0)
+		font->type2_found_width = TRUE;
+
+	    return CAIRO_STATUS_SUCCESS;
+        } else if (*p == TYPE2_callsubr) {
+            /* call to local subroutine */
+	    if (! font->type2_stack_top_is_int)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+            if (++font->type2_nesting_level > MAX_SUBROUTINE_NESTING)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+            p++;
+	    font->type2_stack_top_is_int = FALSE;
+            font->type2_stack_size--;
+	    if (font->type2_find_width && font->type2_stack_size == 0)
+		font->type2_seen_first_int = FALSE;
+
+            if (font->is_cid) {
+                fd = font->fdselect[glyph_id];
+                sub_num = font->type2_stack_top_value + font->fd_local_sub_bias[fd];
+                element = _cairo_array_index (&font->fd_local_sub_index[fd], sub_num);
+                if (! font->fd_local_subs_used[fd][sub_num]) {
+		    font->fd_local_subs_used[fd][sub_num] = TRUE;
+		    cairo_cff_parse_charstring (font, element->data, element->length, glyph_id, need_width);
+		}
+            } else {
+                sub_num = font->type2_stack_top_value + font->local_sub_bias;
+                element = _cairo_array_index (&font->local_sub_index, sub_num);
+                if (! font->local_subs_used[sub_num] ||
+		    (need_width && !font->type2_found_width))
+		{
+		    font->local_subs_used[sub_num] = TRUE;
+		    cairo_cff_parse_charstring (font, element->data, element->length, glyph_id, need_width);
+		}
+            }
+            font->type2_nesting_level--;
+        } else if (*p == TYPE2_callgsubr) {
+            /* call to global subroutine */
+	    if (! font->type2_stack_top_is_int)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+            if (++font->type2_nesting_level > MAX_SUBROUTINE_NESTING)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+            p++;
+            font->type2_stack_size--;
+	    font->type2_stack_top_is_int = FALSE;
+	    if (font->type2_find_width && font->type2_stack_size == 0)
+		font->type2_seen_first_int = FALSE;
+
+	    sub_num = font->type2_stack_top_value + font->global_sub_bias;
+	    element = _cairo_array_index (&font->global_sub_index, sub_num);
+            if (! font->global_subs_used[sub_num] ||
+		(need_width && !font->type2_found_width))
+	    {
+                font->global_subs_used[sub_num] = TRUE;
+                cairo_cff_parse_charstring (font, element->data, element->length, glyph_id, need_width);
+            }
+            font->type2_nesting_level--;
+        } else if (*p == 12) {
+            /* 2 byte instruction */
+
+	    /* All the 2 byte operators are either not valid before a
+	     * stack clearing operator or they are one of the
+	     * arithmetic, storage, or conditional operators. */
+	    if (need_width && font->type2_find_width)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+            p += 2;
+	    font->type2_stack_top_is_int = FALSE;
+	} else {
+            /* 1 byte instruction */
+            p++;
+	    font->type2_stack_top_is_int = FALSE;
+        }
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_find_width_and_subroutines_used (cairo_cff_font_t  *font,
+					   unsigned char *charstring, int length,
+					   int glyph_id, int subset_id)
+{
+    cairo_status_t status;
+    int width;
+    int fd;
+
+    font->type2_stack_size = 0;
+    font->type2_stack_top_value = 0;;
+    font->type2_stack_top_is_int = FALSE;
+    font->type2_num_hints = 0;
+    font->type2_hintmask_bytes = 0;
+    font->type2_nesting_level = 0;
+    font->type2_seen_first_int = FALSE;
+    font->type2_find_width = TRUE;
+    font->type2_found_width = FALSE;
+    font->type2_width = 0;
+    font->type2_has_path = FALSE;
+
+    status = cairo_cff_parse_charstring (font, charstring, length, glyph_id, TRUE);
+    if (status)
+	return status;
+
+    if (!font->is_opentype) {
+        if (font->is_cid) {
+            fd = font->fdselect[glyph_id];
+            if (font->type2_found_width)
+                width = font->fd_nominal_width[fd] + font->type2_width;
+            else
+                width = font->fd_default_width[fd];
+        } else {
+            if (font->type2_found_width)
+                width = font->nominal_width + font->type2_width;
+            else
+                width = font->default_width;
+        }
+        font->widths[subset_id] = width;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_cff_font_get_gid_for_cid (cairo_cff_font_t  *font, unsigned long cid, unsigned long *gid)
+{
+    unsigned char *p;
+    unsigned long first_gid;
+    unsigned long first_cid;
+    int num_left;
+    unsigned long c, g;
+
+    if (cid == 0) {
+	*gid = 0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    switch (font->charset[0]) {
+	/* Format 0 */
+	case 0:
+	    p = font->charset + 1;
+	    g = 1;
+	    while (g <= (unsigned)font->num_glyphs && p < font->data_end) {
+		c = get_unaligned_be16 (p);
+		if (c == cid) {
+		    *gid = g;
+		    return CAIRO_STATUS_SUCCESS;
+		}
+		g++;
+		p += 2;
+	    }
+	    break;
+
+	/* Format 1 */
+	case 1:
+	    first_gid = 1;
+	    p = font->charset + 1;
+	    while (first_gid <= (unsigned)font->num_glyphs && p + 2 < font->data_end) {
+		first_cid = get_unaligned_be16 (p);
+		num_left = p[2];
+		if (cid >= first_cid && cid <= first_cid + num_left) {
+		    *gid = first_gid + cid - first_cid;
+		    return CAIRO_STATUS_SUCCESS;
+		}
+		first_gid += num_left + 1;
+		p += 3;
+	    }
+	    break;
+
+	/* Format 2 */
+	case 2:
+	    first_gid = 1;
+	    p = font->charset + 1;
+	    while (first_gid <= (unsigned)font->num_glyphs && p + 3 < font->data_end) {
+		first_cid = get_unaligned_be16 (p);
+		num_left = get_unaligned_be16 (p+2);
+		if (cid >= first_cid && cid <= first_cid + num_left) {
+		    *gid = first_gid + cid - first_cid;
+		    return CAIRO_STATUS_SUCCESS;
+		}
+		first_gid += num_left + 1;
+		p += 4;
+	    }
+	    break;
+
+	default:
+	    break;
+    }
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_int_status_t
+cairo_cff_font_subset_charstrings_and_subroutines (cairo_cff_font_t  *font)
+{
+    cff_index_element_t *element;
+    unsigned int i;
+    cairo_int_status_t status;
+    unsigned long glyph, cid;
+
+    font->subset_subroutines = TRUE;
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+	if (font->is_cid && !font->is_opentype) {
+	    cid = font->scaled_font_subset->glyphs[i];
+	    status = cairo_cff_font_get_gid_for_cid (font, cid, &glyph);
+	    if (unlikely (status))
+		return status;
+	} else {
+	    glyph = font->scaled_font_subset->glyphs[i];
+	}
+        element = _cairo_array_index (&font->charstrings_index, glyph);
+        status = cff_index_append (&font->charstrings_subset_index,
+                                   element->data,
+                                   element->length);
+        if (unlikely (status))
+            return status;
+
+	if (font->subset_subroutines) {
+	    status = cairo_cff_find_width_and_subroutines_used (font,
+								element->data, element->length,
+								glyph, i);
+	    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+		/* If parsing the charstrings fails we embed all the
+		 * subroutines. But if the font is not opentype we
+		 * need to successfully parse all charstrings to get
+		 * the widths. */
+		font->subset_subroutines = FALSE;
+		if (!font->is_opentype)
+		    return status;
+	    } else if (unlikely (status)) {
+                return status;
+	    }
+        }
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_subset_fontdict (cairo_cff_font_t  *font)
+{
+    unsigned int i;
+    int fd;
+    int *reverse_map;
+    unsigned long cid, gid;
+    cairo_int_status_t status;
+
+    font->fdselect_subset = calloc (font->scaled_font_subset->num_glyphs,
+                                     sizeof (int));
+    if (unlikely (font->fdselect_subset == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->fd_subset_map = calloc (font->num_fontdicts, sizeof (int));
+    if (unlikely (font->fd_subset_map == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->private_dict_offset = calloc (font->num_fontdicts, sizeof (int));
+    if (unlikely (font->private_dict_offset == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    reverse_map = calloc (font->num_fontdicts, sizeof (int));
+    if (unlikely (reverse_map == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    for (i = 0; i < font->num_fontdicts; i++)
+        reverse_map[i] = -1;
+
+    font->num_subset_fontdicts = 0;
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+	if (font->is_opentype) {
+	    gid = font->scaled_font_subset->glyphs[i];
+	} else {
+	    cid = font->scaled_font_subset->glyphs[i];
+	    status = cairo_cff_font_get_gid_for_cid (font, cid, &gid);
+	    if (unlikely (status)) {
+		free (reverse_map);
+		return status;
+	    }
+	}
+
+        fd = font->fdselect[gid];
+        if (reverse_map[fd] < 0) {
+            font->fd_subset_map[font->num_subset_fontdicts] = fd;
+            reverse_map[fd] = font->num_subset_fontdicts++;
+        }
+        font->fdselect_subset[i] = reverse_map[fd];
+    }
+
+    free (reverse_map);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_create_cid_fontdict (cairo_cff_font_t *font)
+{
+    unsigned char buf[100];
+    unsigned char *end_buf;
+    cairo_status_t status;
+
+    font->num_fontdicts = 1;
+    font->fd_dict = _cairo_malloc (sizeof (cairo_hash_table_t *));
+    if (unlikely (font->fd_dict == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (cff_dict_init (&font->fd_dict[0])) {
+	free (font->fd_dict);
+	font->fd_dict = NULL;
+	font->num_fontdicts = 0;
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    font->fd_subset_map = _cairo_malloc (sizeof (int));
+    if (unlikely (font->fd_subset_map == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->private_dict_offset = _cairo_malloc (sizeof (int));
+    if (unlikely (font->private_dict_offset == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->fd_subset_map[0] = 0;
+    font->num_subset_fontdicts = 1;
+
+    /* Set integer operand to max value to use max size encoding to reserve
+     * space for any value later */
+    end_buf = encode_integer_max (buf, 0);
+    end_buf = encode_integer_max (end_buf, 0);
+    status = cff_dict_set_operands (font->fd_dict[0], PRIVATE_OP, buf, end_buf - buf);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_subset_strings (cairo_cff_font_t *font)
+{
+    cairo_status_t status;
+    unsigned int i;
+
+    status = cairo_cff_font_subset_dict_strings (font, font->top_dict);
+    if (unlikely (status))
+        return status;
+
+    if (font->is_cid) {
+        for (i = 0; i < font->num_subset_fontdicts; i++) {
+            status = cairo_cff_font_subset_dict_strings (font, font->fd_dict[font->fd_subset_map[i]]);
+            if (unlikely (status))
+                return status;
+
+            status = cairo_cff_font_subset_dict_strings (font, font->fd_private_dict[font->fd_subset_map[i]]);
+            if (unlikely (status))
+                return status;
+        }
+    } else {
+        status = cairo_cff_font_subset_dict_strings (font, font->private_dict);
+    }
+
+    return status;
+}
+
+/* The Euro is the only the only character in the winansi encoding
+ * with a glyph name that is not a CFF standard string. As the strings
+ * are written before the charset, we need to check during the
+ * subsetting phase if the Euro glyph is required and add the
+ * glyphname to the list of strings to write out.
+ */
+static cairo_status_t
+cairo_cff_font_add_euro_charset_string (cairo_cff_font_t *font)
+{
+    cairo_status_t status;
+    unsigned int i;
+    int ch;
+    const char *euro = "Euro";
+
+    for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) {
+	ch = font->scaled_font_subset->to_latin_char[i];
+	if (ch == 128) {
+	    font->euro_sid = NUM_STD_STRINGS + _cairo_array_num_elements (&font->strings_subset_index);
+	    status = cff_index_append_copy (&font->strings_subset_index,
+					    (unsigned char *)euro, strlen(euro));
+	    return status;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_subset_font (cairo_cff_font_t  *font)
+{
+    cairo_status_t status;
+
+    if (!font->scaled_font_subset->is_latin) {
+	status = cairo_cff_font_set_ros_strings (font);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cairo_cff_font_subset_charstrings_and_subroutines (font);
+    if (unlikely (status))
+        return status;
+
+    if (!font->scaled_font_subset->is_latin) {
+	if (font->is_cid)
+	    status = cairo_cff_font_subset_fontdict (font);
+	else
+	    status = cairo_cff_font_create_cid_fontdict (font);
+	if (unlikely (status))
+	    return status;
+    }  else {
+	font->private_dict_offset = _cairo_malloc (sizeof (int));
+	if (unlikely (font->private_dict_offset == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    status = cairo_cff_font_subset_strings (font);
+    if (unlikely (status))
+        return status;
+
+    if (font->scaled_font_subset->is_latin)
+	status = cairo_cff_font_add_euro_charset_string (font);
+
+    return status;
+}
+
+/* Set the operand of the specified operator in the (already written)
+ * top dict to point to the current position in the output
+ * array. Operands updated with this function must have previously
+ * been encoded with the 5-byte (max) integer encoding. */
+static void
+cairo_cff_font_set_topdict_operator_to_cur_pos (cairo_cff_font_t  *font,
+                                                int                operator)
+{
+    int cur_pos;
+    int offset;
+    int size;
+    unsigned char buf[10];
+    unsigned char *buf_end;
+    unsigned char *op_ptr;
+
+    cur_pos = _cairo_array_num_elements (&font->output);
+    buf_end = encode_integer_max (buf, cur_pos);
+    offset = cff_dict_get_location (font->top_dict, operator, &size);
+    assert (offset > 0);
+    op_ptr = _cairo_array_index (&font->output, offset);
+    memcpy (op_ptr, buf, buf_end - buf);
+}
+
+static cairo_status_t
+cairo_cff_font_write_header (cairo_cff_font_t *font)
+{
+    return _cairo_array_append_multiple (&font->output,
+                                         font->header,
+                                         font->header->header_size);
+}
+
+static cairo_status_t
+cairo_cff_font_write_name (cairo_cff_font_t *font)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_array_t index;
+
+    cff_index_init (&index);
+
+    status = cff_index_append_copy (&index,
+                                    (unsigned char *) font->ps_name,
+                                    strlen(font->ps_name));
+    if (unlikely (status))
+	goto FAIL;
+
+    status = cff_index_write (&index, &font->output);
+    if (unlikely (status))
+        goto FAIL;
+
+FAIL:
+    cff_index_fini (&index);
+
+    return status;
+}
+
+static cairo_status_t
+cairo_cff_font_write_top_dict (cairo_cff_font_t *font)
+{
+    uint16_t count;
+    unsigned char buf[10];
+    unsigned char *p;
+    int offset_index;
+    int dict_start, dict_size;
+    int offset_size = 4;
+    cairo_status_t status;
+
+    /* Write an index containing the top dict */
+
+    count = cpu_to_be16 (1);
+    status = _cairo_array_append_multiple (&font->output, &count, 2);
+    if (unlikely (status))
+        return status;
+    buf[0] = offset_size;
+    status = _cairo_array_append (&font->output, buf);
+    if (unlikely (status))
+        return status;
+    encode_index_offset (buf, offset_size, 1);
+    status = _cairo_array_append_multiple (&font->output, buf, offset_size);
+    if (unlikely (status))
+        return status;
+
+    /* Reserve space for last element of offset array and update after
+     * dict is written */
+    offset_index = _cairo_array_num_elements (&font->output);
+    status = _cairo_array_append_multiple (&font->output, buf, offset_size);
+    if (unlikely (status))
+        return status;
+
+    dict_start = _cairo_array_num_elements (&font->output);
+    status = cff_dict_write (font->top_dict, &font->output);
+    if (unlikely (status))
+        return status;
+    dict_size = _cairo_array_num_elements (&font->output) - dict_start;
+
+    encode_index_offset (buf, offset_size, dict_size + 1);
+    p = _cairo_array_index (&font->output, offset_index);
+    memcpy (p, buf, offset_size);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_strings (cairo_cff_font_t  *font)
+{
+    return cff_index_write (&font->strings_subset_index, &font->output);
+}
+
+static cairo_status_t
+cairo_cff_font_write_global_subrs (cairo_cff_font_t  *font)
+{
+    unsigned int i;
+    unsigned char return_op = TYPE2_return;
+
+    /* poppler and fontforge don't like zero length subroutines so we
+     * replace unused subroutines with a 'return' instruction. */
+    if (font->subset_subroutines) {
+        for (i = 0; i < _cairo_array_num_elements (&font->global_sub_index); i++) {
+            if (! font->global_subs_used[i])
+                cff_index_set_object (&font->global_sub_index, i, &return_op, 1);
+        }
+    }
+
+    return cff_index_write (&font->global_sub_index, &font->output);
+}
+
+static cairo_status_t
+cairo_cff_font_write_encoding (cairo_cff_font_t  *font)
+{
+    unsigned char buf[2];
+    cairo_status_t status;
+    unsigned int i;
+
+    cairo_cff_font_set_topdict_operator_to_cur_pos (font, ENCODING_OP);
+    buf[0] = 0; /* Format 0 */
+    buf[1] = font->scaled_font_subset->num_glyphs - 1;
+    status = _cairo_array_append_multiple (&font->output, buf, 2);
+    if (unlikely (status))
+	return status;
+
+    for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) {
+	unsigned char ch = font->scaled_font_subset->to_latin_char[i];
+        status = _cairo_array_append (&font->output, &ch);
+        if (unlikely (status))
+            return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_fdselect (cairo_cff_font_t  *font)
+{
+    unsigned char data;
+    unsigned int i;
+    cairo_int_status_t status;
+
+    cairo_cff_font_set_topdict_operator_to_cur_pos (font, FDSELECT_OP);
+
+    if (font->is_cid) {
+        data = 0;
+        status = _cairo_array_append (&font->output, &data);
+        if (unlikely (status))
+            return status;
+
+        for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+            data = font->fdselect_subset[i];
+            status = _cairo_array_append (&font->output, &data);
+            if (unlikely (status))
+                return status;
+        }
+    } else {
+        unsigned char byte;
+        uint16_t word;
+
+        status = _cairo_array_grow_by (&font->output, 9);
+        if (unlikely (status))
+            return status;
+
+        byte = 3;
+        status = _cairo_array_append (&font->output, &byte);
+        assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+        word = cpu_to_be16 (1);
+        status = _cairo_array_append_multiple (&font->output, &word, 2);
+        assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+        word = cpu_to_be16 (0);
+        status = _cairo_array_append_multiple (&font->output, &word, 2);
+        assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+        byte = 0;
+        status = _cairo_array_append (&font->output, &byte);
+        assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+        word = cpu_to_be16 (font->scaled_font_subset->num_glyphs);
+        status = _cairo_array_append_multiple (&font->output, &word, 2);
+        assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Winansi to CFF standard strings mapping for characters 128 to 255 */
+static const int winansi_to_cff_std_string[] = {
+	/* 128 */
+      0,   0, 117, 101, 118, 121, 112, 113,
+    126, 122, 192, 107, 142,   0, 199,   0,
+	/* 144 */
+      0,  65,   8, 105, 119, 116, 111, 137,
+    127, 153, 221, 108, 148,   0, 228, 198,
+	/* 160 */
+      0,  96,  97,  98, 103, 100, 160, 102,
+    131, 170, 139, 106, 151,   0, 165, 128,
+	/* 176 */
+    161, 156, 164, 169, 125, 152, 115, 114,
+    133, 150, 143, 120, 158, 155, 163, 123,
+	/* 192 */
+    174, 171, 172, 176, 173, 175, 138, 177,
+    181, 178, 179, 180, 185, 182, 183, 184,
+	/* 208 */
+    154, 186, 190, 187, 188, 191, 189, 168,
+    141, 196, 193, 194, 195, 197, 157, 149,
+	/* 224 */
+    203, 200, 201, 205, 202, 204, 144, 206,
+    210, 207, 208, 209, 214, 211, 212, 213,
+	/* 240 */
+    167, 215, 219, 216, 217, 220, 218, 159,
+    147, 225, 222, 223, 224, 226, 162, 227,
+};
+
+static int
+cairo_cff_font_get_sid_for_winansi_char (cairo_cff_font_t  *font, int ch)
+{
+    int sid;
+
+    if (ch == 39) {
+	sid = 104;
+
+    } else if (ch == 96) {
+	sid = 124;
+
+    } else if (ch >= 32 && ch <= 126) {
+	sid = ch - 31;
+
+    } else if (ch == 128) {
+	assert (font->euro_sid >= NUM_STD_STRINGS);
+	sid = font->euro_sid;
+
+    } else if (ch >= 128 && ch <= 255) {
+	sid = winansi_to_cff_std_string[ch - 128];
+
+    } else {
+	sid = 0;
+    }
+
+    return sid;
+}
+
+static cairo_status_t
+cairo_cff_font_write_type1_charset (cairo_cff_font_t  *font)
+{
+    unsigned char format = 0;
+    unsigned int i;
+    int ch, sid;
+    cairo_status_t status;
+    uint16_t sid_be16;
+
+    cairo_cff_font_set_topdict_operator_to_cur_pos (font, CHARSET_OP);
+    status = _cairo_array_append (&font->output, &format);
+    if (unlikely (status))
+	return status;
+
+    for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) {
+	ch = font->scaled_font_subset->to_latin_char[i];
+	sid = cairo_cff_font_get_sid_for_winansi_char (font, ch);
+        if (unlikely (status))
+	    return status;
+
+	sid_be16 = cpu_to_be16(sid);
+	status = _cairo_array_append_multiple (&font->output, &sid_be16, sizeof(sid_be16));
+        if (unlikely (status))
+            return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_cid_charset (cairo_cff_font_t  *font)
+{
+    unsigned char byte;
+    uint16_t word;
+    cairo_status_t status;
+
+    cairo_cff_font_set_topdict_operator_to_cur_pos (font, CHARSET_OP);
+    status = _cairo_array_grow_by (&font->output, 5);
+    if (unlikely (status))
+        return status;
+
+    byte = 2;
+    status = _cairo_array_append (&font->output, &byte);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    word = cpu_to_be16 (1);
+    status = _cairo_array_append_multiple (&font->output, &word, 2);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    word = cpu_to_be16 (font->scaled_font_subset->num_glyphs - 2);
+    status = _cairo_array_append_multiple (&font->output, &word, 2);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_charstrings (cairo_cff_font_t  *font)
+{
+    cairo_cff_font_set_topdict_operator_to_cur_pos (font, CHARSTRINGS_OP);
+
+    return cff_index_write (&font->charstrings_subset_index, &font->output);
+}
+
+static cairo_status_t
+cairo_cff_font_write_cid_fontdict (cairo_cff_font_t *font)
+{
+    unsigned int i;
+    cairo_int_status_t status;
+    unsigned int offset_array;
+    unsigned char *offset_array_ptr;
+    int offset_base;
+    uint16_t count;
+    uint8_t offset_size = 4;
+
+    cairo_cff_font_set_topdict_operator_to_cur_pos (font, FDARRAY_OP);
+    count = cpu_to_be16 (font->num_subset_fontdicts);
+    status = _cairo_array_append_multiple (&font->output, &count, sizeof (uint16_t));
+    if (unlikely (status))
+        return status;
+    status = _cairo_array_append (&font->output, &offset_size);
+    if (unlikely (status))
+        return status;
+
+    offset_array = _cairo_array_num_elements (&font->output);
+    status = _cairo_array_allocate (&font->output,
+                                    (font->num_subset_fontdicts + 1)*offset_size,
+                                    (void **) &offset_array_ptr);
+    if (unlikely (status))
+        return status;
+    offset_base = _cairo_array_num_elements (&font->output) - 1;
+    put_unaligned_be32(1, offset_array_ptr);
+    offset_array += sizeof(uint32_t);
+    for (i = 0; i < font->num_subset_fontdicts; i++) {
+        status = cff_dict_write (font->fd_dict[font->fd_subset_map[i]],
+                                 &font->output);
+        if (unlikely (status))
+            return status;
+
+	offset_array_ptr = _cairo_array_index (&font->output, offset_array);
+	put_unaligned_be32 (_cairo_array_num_elements (&font->output) - offset_base,
+			    offset_array_ptr);
+	offset_array += sizeof(uint32_t);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_private_dict (cairo_cff_font_t   *font,
+				   int                 dict_num,
+				   cairo_hash_table_t *parent_dict,
+				   cairo_hash_table_t *private_dict)
+{
+    int offset;
+    int size;
+    unsigned char buf[10];
+    unsigned char *buf_end;
+    unsigned char *p;
+    cairo_status_t status;
+
+    /* Write private dict and update offset and size in top dict */
+    font->private_dict_offset[dict_num] = _cairo_array_num_elements (&font->output);
+    status = cff_dict_write (private_dict, &font->output);
+    if (unlikely (status))
+        return status;
+
+    size = _cairo_array_num_elements (&font->output) - font->private_dict_offset[dict_num];
+    /* private entry has two operands - size and offset */
+    buf_end = encode_integer_max (buf, size);
+    buf_end = encode_integer_max (buf_end, font->private_dict_offset[dict_num]);
+    offset = cff_dict_get_location (parent_dict, PRIVATE_OP, &size);
+    assert (offset > 0);
+    p = _cairo_array_index (&font->output, offset);
+    memcpy (p, buf, buf_end - buf);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_local_sub (cairo_cff_font_t   *font,
+                                int                 dict_num,
+                                cairo_hash_table_t *private_dict,
+                                cairo_array_t      *local_sub_index,
+                                cairo_bool_t       *local_subs_used)
+{
+    int offset;
+    int size;
+    unsigned char buf[10];
+    unsigned char *buf_end;
+    unsigned char *p;
+    cairo_status_t status;
+    unsigned int i;
+    unsigned char return_op = TYPE2_return;
+
+    if (_cairo_array_num_elements (local_sub_index) > 0) {
+        /* Write local subroutines and update offset in private
+         * dict. Local subroutines offset is relative to start of
+         * private dict */
+        offset = _cairo_array_num_elements (&font->output) - font->private_dict_offset[dict_num];
+        buf_end = encode_integer_max (buf, offset);
+        offset = cff_dict_get_location (private_dict, LOCAL_SUB_OP, &size);
+        assert (offset > 0);
+        p = _cairo_array_index (&font->output, offset);
+        memcpy (p, buf, buf_end - buf);
+
+	/* poppler and fontforge don't like zero length subroutines so
+	 * we replace unused subroutines with a 'return' instruction.
+	 */
+        if (font->subset_subroutines) {
+            for (i = 0; i < _cairo_array_num_elements (local_sub_index); i++) {
+                if (! local_subs_used[i])
+                    cff_index_set_object (local_sub_index, i, &return_op, 1);
+            }
+        }
+        status = cff_index_write (local_sub_index, &font->output);
+        if (unlikely (status))
+            return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+static cairo_status_t
+cairo_cff_font_write_cid_private_dict_and_local_sub (cairo_cff_font_t  *font)
+{
+    unsigned int i;
+    cairo_int_status_t status;
+
+    if (font->is_cid) {
+        for (i = 0; i < font->num_subset_fontdicts; i++) {
+            status = cairo_cff_font_write_private_dict (
+                            font,
+                            i,
+                            font->fd_dict[font->fd_subset_map[i]],
+                            font->fd_private_dict[font->fd_subset_map[i]]);
+            if (unlikely (status))
+                return status;
+        }
+
+        for (i = 0; i < font->num_subset_fontdicts; i++) {
+            status = cairo_cff_font_write_local_sub (
+                            font,
+                            i,
+                            font->fd_private_dict[font->fd_subset_map[i]],
+                            &font->fd_local_sub_index[font->fd_subset_map[i]],
+                            font->fd_local_subs_used[font->fd_subset_map[i]]);
+            if (unlikely (status))
+                return status;
+        }
+    } else {
+        status = cairo_cff_font_write_private_dict (font,
+                                                    0,
+                                                    font->fd_dict[0],
+                                                    font->private_dict);
+	if (unlikely (status))
+	    return status;
+
+        status = cairo_cff_font_write_local_sub (font,
+                                                 0,
+                                                 font->private_dict,
+                                                 &font->local_sub_index,
+                                                 font->local_subs_used);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_cff_font_write_type1_private_dict_and_local_sub (cairo_cff_font_t  *font)
+{
+    cairo_int_status_t status;
+
+    status = cairo_cff_font_write_private_dict (font,
+						0,
+						font->top_dict,
+						font->private_dict);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_cff_font_write_local_sub (font,
+					     0,
+					     font->private_dict,
+					     &font->local_sub_index,
+					     font->local_subs_used);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+typedef cairo_status_t
+(*font_write_t) (cairo_cff_font_t *font);
+
+static const font_write_t font_write_cid_funcs[] = {
+    cairo_cff_font_write_header,
+    cairo_cff_font_write_name,
+    cairo_cff_font_write_top_dict,
+    cairo_cff_font_write_strings,
+    cairo_cff_font_write_global_subrs,
+    cairo_cff_font_write_cid_charset,
+    cairo_cff_font_write_fdselect,
+    cairo_cff_font_write_charstrings,
+    cairo_cff_font_write_cid_fontdict,
+    cairo_cff_font_write_cid_private_dict_and_local_sub,
+};
+
+static const font_write_t font_write_type1_funcs[] = {
+    cairo_cff_font_write_header,
+    cairo_cff_font_write_name,
+    cairo_cff_font_write_top_dict,
+    cairo_cff_font_write_strings,
+    cairo_cff_font_write_global_subrs,
+    cairo_cff_font_write_encoding,
+    cairo_cff_font_write_type1_charset,
+    cairo_cff_font_write_charstrings,
+    cairo_cff_font_write_type1_private_dict_and_local_sub,
+};
+
+static cairo_status_t
+cairo_cff_font_write_subset (cairo_cff_font_t *font)
+{
+    cairo_int_status_t status;
+    unsigned int i;
+
+    if (font->scaled_font_subset->is_latin) {
+        for (i = 0; i < ARRAY_LENGTH (font_write_type1_funcs); i++) {
+            status = font_write_type1_funcs[i] (font);
+            if (unlikely (status))
+                return status;
+        }
+    } else {
+        for (i = 0; i < ARRAY_LENGTH (font_write_cid_funcs); i++) {
+            status = font_write_cid_funcs[i] (font);
+            if (unlikely (status))
+                return status;
+        }
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_cff_font_generate (cairo_cff_font_t  *font,
+                         const char       **data,
+                         unsigned long     *length)
+{
+    cairo_int_status_t status;
+
+    status = cairo_cff_font_read_font (font);
+    if (unlikely (status))
+        return status;
+
+    /* If the PS name is not found, create a CairoFont-x-y name. */
+    if (font->ps_name == NULL) {
+        font->ps_name = _cairo_malloc (30);
+        if (unlikely (font->ps_name == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+        snprintf(font->ps_name, 30, "CairoFont-%u-%u",
+                 font->scaled_font_subset->font_id,
+                 font->scaled_font_subset->subset_id);
+    }
+
+    status = cairo_cff_font_subset_font (font);
+    if (unlikely (status))
+        return status;
+
+    status = cairo_cff_font_write_subset (font);
+    if (unlikely (status))
+        return status;
+
+
+    *data = _cairo_array_index (&font->output, 0);
+    *length = _cairo_array_num_elements (&font->output);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_cff_font_create_set_widths (cairo_cff_font_t *font)
+{
+    unsigned long size;
+    unsigned long long_entry_size;
+    unsigned long short_entry_size;
+    unsigned int i;
+    tt_hhea_t hhea;
+    int num_hmetrics;
+    uint16_t short_entry;
+    int glyph_index;
+    cairo_int_status_t status;
+
+    size = sizeof (tt_hhea_t);
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                                 TT_TAG_hhea, 0,
+                                                 (unsigned char*) &hhea, &size);
+    if (unlikely (status))
+        return status;
+    num_hmetrics = be16_to_cpu (hhea.num_hmetrics);
+
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+        glyph_index = font->scaled_font_subset->glyphs[i];
+        long_entry_size = 2 * sizeof (int16_t);
+        short_entry_size = sizeof (int16_t);
+        if (glyph_index < num_hmetrics) {
+            status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                                         TT_TAG_hmtx,
+                                                         glyph_index * long_entry_size,
+                                                         (unsigned char *) &short_entry,
+							 &short_entry_size);
+            if (unlikely (status))
+                return status;
+        }
+        else
+        {
+            status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                                         TT_TAG_hmtx,
+                                                         (num_hmetrics - 1) * long_entry_size,
+                                                         (unsigned char *) &short_entry,
+							 &short_entry_size);
+            if (unlikely (status))
+                return status;
+        }
+	font->widths[i] = be16_to_cpu (short_entry);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+check_fontdata_is_cff (const unsigned char *data, long length)
+{
+    cff_header_t *header;
+
+    if (length < (long)sizeof (cff_header_t))
+        return FALSE;
+
+    header = (cff_header_t *) data;
+    if (header->major == 1 &&
+	header->minor == 0 &&
+	header->header_size == 4)
+    {
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+_cairo_cff_font_load_opentype_cff (cairo_cff_font_t  *font)
+{
+    const cairo_scaled_font_backend_t *backend = font->backend;
+    cairo_status_t status;
+    tt_head_t head;
+    tt_hhea_t hhea;
+    unsigned long size, data_length;
+
+    if (!backend->load_truetype_table)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    data_length = 0;
+    status = backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                           TT_TAG_CFF, 0, NULL, &data_length);
+    if (status)
+        return status;
+
+    size = sizeof (tt_head_t);
+    status = backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                           TT_TAG_head, 0,
+                                           (unsigned char *) &head, &size);
+    if (unlikely (status))
+        return status;
+
+    size = sizeof (tt_hhea_t);
+    status = backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                           TT_TAG_hhea, 0,
+                                           (unsigned char *) &hhea, &size);
+    if (unlikely (status))
+        return status;
+
+    size = 0;
+    status = backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                           TT_TAG_hmtx, 0, NULL, &size);
+    if (unlikely (status))
+        return status;
+
+    font->x_min = (int16_t) be16_to_cpu (head.x_min);
+    font->y_min = (int16_t) be16_to_cpu (head.y_min);
+    font->x_max = (int16_t) be16_to_cpu (head.x_max);
+    font->y_max = (int16_t) be16_to_cpu (head.y_max);
+    font->ascent = (int16_t) be16_to_cpu (hhea.ascender);
+    font->descent = (int16_t) be16_to_cpu (hhea.descender);
+    font->units_per_em = (int16_t) be16_to_cpu (head.units_per_em);
+    if (font->units_per_em == 0)
+        font->units_per_em = 1000;
+
+    font->font_name = NULL;
+    status = _cairo_truetype_read_font_name (font->scaled_font_subset->scaled_font,
+					     &font->ps_name,
+					     &font->font_name);
+    if (_cairo_status_is_error (status))
+	return status;
+
+    font->is_opentype = TRUE;
+    font->data_length = data_length;
+    font->data = _cairo_malloc (data_length);
+    if (unlikely (font->data == NULL))
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 TT_TAG_CFF, 0, font->data,
+						 &font->data_length);
+    if (unlikely (status))
+        return status;
+
+    if (!check_fontdata_is_cff (font->data, data_length))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_cff_font_load_cff (cairo_cff_font_t  *font)
+{
+    const cairo_scaled_font_backend_t *backend = font->backend;
+    cairo_status_t status;
+    unsigned long data_length;
+
+    if (!backend->load_type1_data)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    data_length = 0;
+    status = backend->load_type1_data (font->scaled_font_subset->scaled_font,
+				      0, NULL, &data_length);
+    if (unlikely (status))
+        return status;
+
+    font->font_name = NULL;
+    font->is_opentype = FALSE;
+    font->data_length = data_length;
+    font->data = _cairo_malloc (data_length);
+    if (unlikely (font->data == NULL))
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = font->backend->load_type1_data (font->scaled_font_subset->scaled_font,
+					     0, font->data, &font->data_length);
+    if (unlikely (status))
+        return status;
+
+    if (!check_fontdata_is_cff (font->data, data_length))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_cff_font_create (cairo_scaled_font_subset_t  *scaled_font_subset,
+                        cairo_cff_font_t           **font_return,
+                        const char                  *subset_name)
+{
+    const cairo_scaled_font_backend_t *backend;
+    cairo_int_status_t status;
+    cairo_bool_t is_synthetic;
+    cairo_cff_font_t *font;
+
+    backend = scaled_font_subset->scaled_font->backend;
+
+    /* We need to use a fallback font if this font differs from the CFF outlines. */
+    if (backend->is_synthetic) {
+	status = backend->is_synthetic (scaled_font_subset->scaled_font, &is_synthetic);
+	if (unlikely (status))
+	    return status;
+
+	if (is_synthetic)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    font = calloc (1, sizeof (cairo_cff_font_t));
+    if (unlikely (font == NULL))
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->backend = backend;
+    font->scaled_font_subset = scaled_font_subset;
+
+    status = _cairo_cff_font_load_opentype_cff (font);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	status = _cairo_cff_font_load_cff (font);
+    if (status)
+	goto fail1;
+
+    font->data_end = font->data + font->data_length;
+    _cairo_array_init (&font->output, sizeof (char));
+    status = _cairo_array_grow_by (&font->output, 4096);
+    if (unlikely (status))
+	goto fail2;
+
+    font->subset_font_name = strdup (subset_name);
+    if (unlikely (font->subset_font_name == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail2;
+    }
+
+    font->widths = calloc (font->scaled_font_subset->num_glyphs, sizeof (int));
+    if (unlikely (font->widths == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail3;
+    }
+
+    if (font->is_opentype) {
+	status = cairo_cff_font_create_set_widths (font);
+	if (unlikely (status))
+	    goto fail4;
+    }
+
+    status = cff_dict_init (&font->top_dict);
+    if (unlikely (status))
+	goto fail4;
+
+    status = cff_dict_init (&font->private_dict);
+    if (unlikely (status))
+	goto fail5;
+
+    cff_index_init (&font->strings_index);
+    cff_index_init (&font->charstrings_index);
+    cff_index_init (&font->global_sub_index);
+    cff_index_init (&font->local_sub_index);
+    cff_index_init (&font->charstrings_subset_index);
+    cff_index_init (&font->strings_subset_index);
+    font->euro_sid = 0;
+    font->fdselect = NULL;
+    font->fd_dict = NULL;
+    font->fd_private_dict = NULL;
+    font->fd_local_sub_index = NULL;
+    font->fd_local_sub_bias = NULL;
+    font->fdselect_subset = NULL;
+    font->fd_subset_map = NULL;
+    font->private_dict_offset = NULL;
+    font->global_subs_used = NULL;
+    font->local_subs_used = NULL;
+    font->fd_local_subs_used = NULL;
+
+    *font_return = font;
+
+    return CAIRO_STATUS_SUCCESS;
+
+fail5:
+    _cairo_hash_table_destroy (font->top_dict);
+fail4:
+    free (font->widths);
+fail3:
+    free (font->subset_font_name);
+fail2:
+    free (font->ps_name);
+    _cairo_array_fini (&font->output);
+fail1:
+    free (font->data);
+    free (font->font_name);
+    free (font);
+
+    return status;
+}
+
+static void
+cairo_cff_font_destroy (cairo_cff_font_t *font)
+{
+    unsigned int i;
+
+    free (font->widths);
+    free (font->font_name);
+    free (font->ps_name);
+    free (font->subset_font_name);
+    _cairo_array_fini (&font->output);
+    cff_dict_fini (font->top_dict);
+    cff_dict_fini (font->private_dict);
+    cff_index_fini (&font->strings_index);
+    cff_index_fini (&font->charstrings_index);
+    cff_index_fini (&font->global_sub_index);
+    cff_index_fini (&font->local_sub_index);
+    cff_index_fini (&font->charstrings_subset_index);
+    cff_index_fini (&font->strings_subset_index);
+
+    /* If we bailed out early as a result of an error some of the
+     * following cairo_cff_font_t members may still be NULL */
+    if (font->fd_dict) {
+        for (i = 0; i < font->num_fontdicts; i++) {
+            if (font->fd_dict[i])
+                cff_dict_fini (font->fd_dict[i]);
+        }
+        free (font->fd_dict);
+    }
+    free (font->global_subs_used);
+    free (font->local_subs_used);
+    free (font->fd_subset_map);
+    free (font->private_dict_offset);
+
+    if (font->is_cid) {
+	free (font->fdselect);
+	free (font->fdselect_subset);
+        if (font->fd_private_dict) {
+            for (i = 0; i < font->num_fontdicts; i++) {
+                if (font->fd_private_dict[i])
+                    cff_dict_fini (font->fd_private_dict[i]);
+            }
+            free (font->fd_private_dict);
+        }
+        if (font->fd_local_sub_index) {
+            for (i = 0; i < font->num_fontdicts; i++)
+                cff_index_fini (&font->fd_local_sub_index[i]);
+            free (font->fd_local_sub_index);
+        }
+	free (font->fd_local_sub_bias);
+        if (font->fd_local_subs_used) {
+            for (i = 0; i < font->num_fontdicts; i++) {
+		free (font->fd_local_subs_used[i]);
+            }
+            free (font->fd_local_subs_used);
+        }
+	free (font->fd_default_width);
+	free (font->fd_nominal_width);
+    }
+
+    free (font->data);
+
+    free (font);
+}
+
+cairo_status_t
+_cairo_cff_subset_init (cairo_cff_subset_t          *cff_subset,
+                        const char		    *subset_name,
+                        cairo_scaled_font_subset_t  *font_subset)
+{
+    cairo_cff_font_t *font = NULL; /* squelch bogus compiler warning */
+    cairo_status_t status;
+    const char *data = NULL; /* squelch bogus compiler warning */
+    unsigned long length = 0; /* squelch bogus compiler warning */
+    unsigned int i;
+
+    status = _cairo_cff_font_create (font_subset, &font, subset_name);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_cff_font_generate (font, &data, &length);
+    if (unlikely (status))
+	goto fail1;
+
+    cff_subset->ps_name = strdup (font->ps_name);
+    if (unlikely (cff_subset->ps_name == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail1;
+    }
+
+    if (font->font_name) {
+	cff_subset->family_name_utf8 = strdup (font->font_name);
+	if (cff_subset->family_name_utf8 == NULL) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail2;
+	}
+    } else {
+	cff_subset->family_name_utf8 = NULL;
+    }
+
+    cff_subset->widths = calloc (sizeof (double), font->scaled_font_subset->num_glyphs);
+    if (unlikely (cff_subset->widths == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail3;
+    }
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++)
+        cff_subset->widths[i] = (double)font->widths[i]/font->units_per_em;
+
+    cff_subset->x_min = (double)font->x_min/font->units_per_em;
+    cff_subset->y_min = (double)font->y_min/font->units_per_em;
+    cff_subset->x_max = (double)font->x_max/font->units_per_em;
+    cff_subset->y_max = (double)font->y_max/font->units_per_em;
+    cff_subset->ascent = (double)font->ascent/font->units_per_em;
+    cff_subset->descent = (double)font->descent/font->units_per_em;
+
+    cff_subset->data = _cairo_malloc (length);
+    if (unlikely (cff_subset->data == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail4;
+    }
+
+    memcpy (cff_subset->data, data, length);
+    cff_subset->data_length = length;
+
+    cairo_cff_font_destroy (font);
+
+    return CAIRO_STATUS_SUCCESS;
+
+ fail4:
+    free (cff_subset->widths);
+ fail3:
+    free (cff_subset->family_name_utf8);
+ fail2:
+    free (cff_subset->ps_name);
+ fail1:
+    cairo_cff_font_destroy (font);
+
+    return status;
+}
+
+void
+_cairo_cff_subset_fini (cairo_cff_subset_t *subset)
+{
+    free (subset->ps_name);
+    free (subset->family_name_utf8);
+    free (subset->widths);
+    free (subset->data);
+}
+
+cairo_bool_t
+_cairo_cff_scaled_font_is_cid_cff (cairo_scaled_font_t *scaled_font)
+{
+    const cairo_scaled_font_backend_t *backend;
+    cairo_int_status_t status;
+    unsigned char *data;
+    unsigned long data_length;
+    unsigned char *current_ptr;
+    unsigned char *data_end;
+    cff_header_t  *header;
+    cff_index_element_t *element;
+    cairo_hash_table_t  *top_dict;
+    cairo_array_t index;
+    int size;
+    cairo_bool_t is_cid = FALSE;
+
+    backend = scaled_font->backend;
+    data = NULL;
+    data_length = 0;
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    /* Try to load an OpenType/CFF font */
+    if (backend->load_truetype_table &&
+	(status = backend->load_truetype_table (scaled_font, TT_TAG_CFF,
+						0, NULL, &data_length)) == CAIRO_INT_STATUS_SUCCESS)
+    {
+	data = _cairo_malloc (data_length);
+	if (unlikely (data == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    return FALSE;
+	}
+
+	status = backend->load_truetype_table (scaled_font, TT_TAG_CFF,
+					   0, data, &data_length);
+	if (unlikely (status))
+	    goto fail1;
+    }
+    /* Try to load a CFF font */
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED &&
+	backend->load_type1_data &&
+	(status = backend->load_type1_data (scaled_font,
+					    0, NULL, &data_length)) == CAIRO_INT_STATUS_SUCCESS)
+    {
+	data = _cairo_malloc (data_length);
+	if (unlikely (data == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    return FALSE;
+	}
+
+	status = backend->load_type1_data (scaled_font, 0, data, &data_length);
+	if (unlikely (status))
+	    goto fail1;
+    }
+    if (status)
+	goto fail1;
+
+    /* Check if it looks like a CFF font */
+    if (!check_fontdata_is_cff (data, data_length))
+	goto fail1;
+
+    data_end = data + data_length;
+
+    /* skip header */
+    if (data_length < sizeof (cff_header_t))
+        goto fail1;
+
+    header = (cff_header_t *) data;
+    current_ptr = data + header->header_size;
+
+    /* skip name */
+    cff_index_init (&index);
+    status = cff_index_read (&index, &current_ptr, data_end);
+    cff_index_fini (&index);
+
+    if (status)
+        goto fail1;
+
+    /* read top dict */
+    cff_index_init (&index);
+    status = cff_index_read (&index, &current_ptr, data_end);
+    if (unlikely (status))
+        goto fail2;
+
+    status = cff_dict_init (&top_dict);
+    if (unlikely (status))
+	goto fail2;
+
+    element = _cairo_array_index (&index, 0);
+    status = cff_dict_read (top_dict, element->data, element->length);
+    if (unlikely (status))
+        goto fail3;
+
+    /* check for ROS operator indicating a CID font */
+    if (cff_dict_get_operands (top_dict, ROS_OP, &size) != NULL)
+        is_cid = TRUE;
+
+fail3:
+    cff_dict_fini (top_dict);
+
+fail2:
+    cff_index_fini (&index);
+
+fail1:
+    free (data);
+
+    return is_cid;
+}
+
+static cairo_int_status_t
+_cairo_cff_font_fallback_create (cairo_scaled_font_subset_t  *scaled_font_subset,
+                                 cairo_cff_font_t           **font_return,
+                                 const char                  *subset_name)
+{
+    cairo_status_t status;
+    cairo_cff_font_t *font;
+
+    font = _cairo_malloc (sizeof (cairo_cff_font_t));
+    if (unlikely (font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->backend = NULL;
+    font->scaled_font_subset = scaled_font_subset;
+
+    _cairo_array_init (&font->output, sizeof (char));
+    status = _cairo_array_grow_by (&font->output, 4096);
+    if (unlikely (status))
+	goto fail1;
+
+    font->subset_font_name = strdup (subset_name);
+    if (unlikely (font->subset_font_name == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail1;
+    }
+
+    font->ps_name = strdup (subset_name);
+    if (unlikely (font->ps_name == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail2;
+    }
+    font->font_name = NULL;
+
+    font->x_min = 0;
+    font->y_min = 0;
+    font->x_max = 0;
+    font->y_max = 0;
+    font->ascent = 0;
+    font->descent = 0;
+
+    font->widths = calloc (font->scaled_font_subset->num_glyphs, sizeof (int));
+    if (unlikely (font->widths == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail3;
+    }
+
+    font->data_length = 0;
+    font->data = NULL;
+    font->data_end = NULL;
+
+    status = cff_dict_init (&font->top_dict);
+    if (unlikely (status))
+	goto fail4;
+
+    status = cff_dict_init (&font->private_dict);
+    if (unlikely (status))
+	goto fail5;
+
+    cff_index_init (&font->strings_index);
+    cff_index_init (&font->charstrings_index);
+    cff_index_init (&font->global_sub_index);
+    cff_index_init (&font->local_sub_index);
+    cff_index_init (&font->charstrings_subset_index);
+    cff_index_init (&font->strings_subset_index);
+    font->global_subs_used = NULL;
+    font->local_subs_used = NULL;
+    font->subset_subroutines = FALSE;
+    font->fdselect = NULL;
+    font->fd_dict = NULL;
+    font->fd_private_dict = NULL;
+    font->fd_local_sub_index = NULL;
+    font->fdselect_subset = NULL;
+    font->fd_subset_map = NULL;
+    font->private_dict_offset = NULL;
+
+    *font_return = font;
+
+    return CAIRO_STATUS_SUCCESS;
+
+fail5:
+    _cairo_hash_table_destroy (font->top_dict);
+fail4:
+    free (font->widths);
+fail3:
+    free (font->font_name);
+    free (font->ps_name);
+fail2:
+    free (font->subset_font_name);
+fail1:
+    _cairo_array_fini (&font->output);
+    free (font);
+    return status;
+}
+
+static cairo_int_status_t
+cairo_cff_font_fallback_generate (cairo_cff_font_t           *font,
+                                  cairo_type2_charstrings_t  *type2_subset,
+                                  const char                **data,
+                                  unsigned long              *length)
+{
+    cairo_int_status_t status;
+    cff_header_t header;
+    cairo_array_t *charstring;
+    unsigned char buf[40];
+    unsigned char *end_buf, *end_buf2;
+    unsigned int i;
+    int sid;
+
+    /* Create header */
+    header.major = 1;
+    header.minor = 0;
+    header.header_size = 4;
+    header.offset_size = 4;
+    font->header = &header;
+
+    /* Create Top Dict */
+    font->is_cid = FALSE;
+
+    snprintf((char*)buf, sizeof(buf), "CairoFont-%u-%u",
+	     font->scaled_font_subset->font_id,
+	     font->scaled_font_subset->subset_id);
+    sid = NUM_STD_STRINGS + _cairo_array_num_elements (&font->strings_subset_index);
+    status = cff_index_append_copy (&font->strings_subset_index,
+                                    (unsigned char *)buf,
+                                    strlen((char*)buf));
+    if (unlikely (status))
+	return status;
+
+    end_buf = encode_integer (buf, sid);
+    status = cff_dict_set_operands (font->top_dict, FULLNAME_OP,
+				    buf, end_buf - buf);
+    if (unlikely (status))
+	return status;
+
+    status = cff_dict_set_operands (font->top_dict, FAMILYNAME_OP,
+				    buf, end_buf - buf);
+    if (unlikely (status))
+	return status;
+
+    end_buf = encode_integer (buf, type2_subset->x_min);
+    end_buf = encode_integer (end_buf, type2_subset->y_min);
+    end_buf = encode_integer (end_buf, type2_subset->x_max);
+    end_buf = encode_integer (end_buf, type2_subset->y_max);
+    status = cff_dict_set_operands (font->top_dict,
+	                            FONTBBOX_OP, buf, end_buf - buf);
+    if (unlikely (status))
+	return status;
+
+    end_buf = encode_integer_max (buf, 0);
+    status = cff_dict_set_operands (font->top_dict,
+	                            CHARSTRINGS_OP, buf, end_buf - buf);
+    if (unlikely (status))
+	return status;
+
+
+    if (font->scaled_font_subset->is_latin) {
+	status = cff_dict_set_operands (font->top_dict,
+                                        ENCODING_OP, buf, end_buf - buf);
+        if (unlikely (status))
+	    return status;
+
+	/* Private has two operands - size and offset */
+	end_buf2 = encode_integer_max (end_buf, 0);
+	cff_dict_set_operands (font->top_dict, PRIVATE_OP, buf, end_buf2 - buf);
+        if (unlikely (status))
+	    return status;
+
+    } else {
+	status = cff_dict_set_operands (font->top_dict,
+					FDSELECT_OP, buf, end_buf - buf);
+	if (unlikely (status))
+	    return status;
+
+	status = cff_dict_set_operands (font->top_dict,
+					FDARRAY_OP, buf, end_buf - buf);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cff_dict_set_operands (font->top_dict,
+	                            CHARSET_OP, buf, end_buf - buf);
+    if (unlikely (status))
+	return status;
+
+    if (!font->scaled_font_subset->is_latin) {
+	status = cairo_cff_font_set_ros_strings (font);
+	if (unlikely (status))
+	    return status;
+
+	/* Create CID FD dictionary */
+	status = cairo_cff_font_create_cid_fontdict (font);
+	if (unlikely (status))
+	    return status;
+    } else {
+	font->private_dict_offset = _cairo_malloc (sizeof (int));
+	if (unlikely (font->private_dict_offset == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    /* Create charstrings */
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+        charstring = _cairo_array_index(&type2_subset->charstrings, i);
+
+        status = cff_index_append (&font->charstrings_subset_index,
+                                   _cairo_array_index (charstring, 0),
+                                   _cairo_array_num_elements (charstring));
+
+        if (unlikely (status))
+            return status;
+    }
+
+    if (font->scaled_font_subset->is_latin)
+	status = cairo_cff_font_add_euro_charset_string (font);
+
+    status = cairo_cff_font_write_subset (font);
+    if (unlikely (status))
+        return status;
+
+    *data = _cairo_array_index (&font->output, 0);
+    *length = _cairo_array_num_elements (&font->output);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_cff_fallback_init (cairo_cff_subset_t          *cff_subset,
+                          const char		      *subset_name,
+                          cairo_scaled_font_subset_t  *font_subset)
+{
+    cairo_cff_font_t *font = NULL; /* squelch bogus compiler warning */
+    cairo_status_t status;
+    const char *data = NULL; /* squelch bogus compiler warning */
+    unsigned long length = 0; /* squelch bogus compiler warning */
+    unsigned int i;
+    cairo_type2_charstrings_t type2_subset;
+
+    status = _cairo_cff_font_fallback_create (font_subset, &font, subset_name);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_type2_charstrings_init (&type2_subset, font_subset);
+    if (unlikely (status))
+	goto fail1;
+
+    status = cairo_cff_font_fallback_generate (font, &type2_subset, &data, &length);
+    if (unlikely (status))
+	goto fail2;
+
+    cff_subset->family_name_utf8 = NULL;
+    cff_subset->ps_name = strdup (font->ps_name);
+    if (unlikely (cff_subset->ps_name == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail2;
+    }
+
+    cff_subset->widths = calloc (sizeof (double), font->scaled_font_subset->num_glyphs);
+    if (unlikely (cff_subset->widths == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail3;
+    }
+
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++)
+        cff_subset->widths[i] = (double)type2_subset.widths[i]/1000;
+
+    cff_subset->x_min = (double)type2_subset.x_min/1000;
+    cff_subset->y_min = (double)type2_subset.y_min/1000;
+    cff_subset->x_max = (double)type2_subset.x_max/1000;
+    cff_subset->y_max = (double)type2_subset.y_max/1000;
+    cff_subset->ascent = (double)type2_subset.y_max/1000;
+    cff_subset->descent = (double)type2_subset.y_min/1000;
+
+    cff_subset->data = _cairo_malloc (length);
+    if (unlikely (cff_subset->data == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail4;
+    }
+
+    memcpy (cff_subset->data, data, length);
+    cff_subset->data_length = length;
+
+    _cairo_type2_charstrings_fini (&type2_subset);
+    cairo_cff_font_destroy (font);
+
+    return CAIRO_STATUS_SUCCESS;
+
+ fail4:
+    free (cff_subset->widths);
+ fail3:
+    free (cff_subset->ps_name);
+ fail2:
+    _cairo_type2_charstrings_fini (&type2_subset);
+ fail1:
+    cairo_cff_font_destroy (font);
+
+    return status;
+}
+
+void
+_cairo_cff_fallback_fini (cairo_cff_subset_t *subset)
+{
+    free (subset->ps_name);
+    free (subset->widths);
+    free (subset->data);
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-clip-boxes.c b/libs/cairo-1.16.0/src/cairo-clip-boxes.c
new file mode 100644
index 0000000..aaddeb7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-boxes.c
@@ -0,0 +1,609 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-gstate-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-region-private.h"
+
+static inline int
+pot (int v)
+{
+    v--;
+    v |= v >> 1;
+    v |= v >> 2;
+    v |= v >> 4;
+    v |= v >> 8;
+    v |= v >> 16;
+    v++;
+    return v;
+}
+
+static cairo_bool_t
+_cairo_clip_contains_rectangle_box (const cairo_clip_t *clip,
+				    const cairo_rectangle_int_t *rect,
+				    const cairo_box_t *box)
+{
+    int i;
+
+    /* clip == NULL means no clip, so the clip contains everything */
+    if (clip == NULL)
+	return TRUE;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return FALSE;
+
+    /* If we have a non-trivial path, just say no */
+    if (clip->path)
+	return FALSE;
+
+    if (! _cairo_rectangle_contains_rectangle (&clip->extents, rect))
+	return FALSE;
+
+    if (clip->num_boxes == 0)
+	return TRUE;
+
+    /* Check for a clip-box that wholly contains the rectangle */
+    for (i = 0; i < clip->num_boxes; i++) {
+	if (box->p1.x >= clip->boxes[i].p1.x &&
+	    box->p1.y >= clip->boxes[i].p1.y &&
+	    box->p2.x <= clip->boxes[i].p2.x &&
+	    box->p2.y <= clip->boxes[i].p2.y)
+	{
+	    return TRUE;
+	}
+    }
+
+    return FALSE;
+}
+
+cairo_bool_t
+_cairo_clip_contains_box (const cairo_clip_t *clip,
+			  const cairo_box_t *box)
+{
+    cairo_rectangle_int_t rect;
+
+    _cairo_box_round_to_rectangle (box, &rect);
+    return _cairo_clip_contains_rectangle_box(clip, &rect, box);
+}
+
+cairo_bool_t
+_cairo_clip_contains_rectangle (const cairo_clip_t *clip,
+				const cairo_rectangle_int_t *rect)
+{
+    cairo_box_t box;
+
+    _cairo_box_from_rectangle_int (&box, rect);
+    return _cairo_clip_contains_rectangle_box (clip, rect, &box);
+}
+
+cairo_clip_t *
+_cairo_clip_intersect_rectilinear_path (cairo_clip_t *clip,
+					const cairo_path_fixed_t *path,
+					cairo_fill_rule_t fill_rule,
+					cairo_antialias_t antialias)
+{
+    cairo_status_t status;
+    cairo_boxes_t boxes;
+
+    _cairo_boxes_init (&boxes);
+    status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							  fill_rule,
+							  antialias,
+							  &boxes);
+    if (likely (status == CAIRO_STATUS_SUCCESS && boxes.num_boxes))
+	clip = _cairo_clip_intersect_boxes (clip, &boxes);
+    else
+	clip = _cairo_clip_set_all_clipped (clip);
+    _cairo_boxes_fini (&boxes);
+
+    return clip;
+}
+
+static cairo_clip_t *
+_cairo_clip_intersect_rectangle_box (cairo_clip_t *clip,
+				     const cairo_rectangle_int_t *r,
+				     const cairo_box_t *box)
+{
+    cairo_box_t extents_box;
+    cairo_bool_t changed = FALSE;
+    int i, j;
+
+    if (clip == NULL) {
+	clip = _cairo_clip_create ();
+	if (clip == NULL)
+	    return _cairo_clip_set_all_clipped (clip);
+    }
+
+    if (clip->num_boxes == 0) {
+	clip->boxes = &clip->embedded_box;
+	clip->boxes[0] = *box;
+	clip->num_boxes = 1;
+	if (clip->path == NULL) {
+	    clip->extents = *r;
+	} else {
+	    if (! _cairo_rectangle_intersect (&clip->extents, r))
+		return _cairo_clip_set_all_clipped (clip);
+	}
+	if (clip->path == NULL)
+	    clip->is_region = _cairo_box_is_pixel_aligned (box);
+	return clip;
+    }
+
+    /* Does the new box wholly subsume the clip? Perform a cheap check
+     * for the common condition of a single clip rectangle.
+     */
+    if (clip->num_boxes == 1 &&
+	clip->boxes[0].p1.x >= box->p1.x &&
+	clip->boxes[0].p1.y >= box->p1.y &&
+	clip->boxes[0].p2.x <= box->p2.x &&
+	clip->boxes[0].p2.y <= box->p2.y)
+    {
+	return clip;
+    }
+
+    for (i = j = 0; i < clip->num_boxes; i++) {
+	cairo_box_t *b = &clip->boxes[j];
+
+	if (j != i)
+	    *b = clip->boxes[i];
+
+	if (box->p1.x > b->p1.x)
+	    b->p1.x = box->p1.x, changed = TRUE;
+	if (box->p2.x < b->p2.x)
+	    b->p2.x = box->p2.x, changed = TRUE;
+
+	if (box->p1.y > b->p1.y)
+	    b->p1.y = box->p1.y, changed = TRUE;
+	if (box->p2.y < b->p2.y)
+	    b->p2.y = box->p2.y, changed = TRUE;
+
+	j += b->p2.x > b->p1.x && b->p2.y > b->p1.y;
+    }
+    clip->num_boxes = j;
+
+    if (clip->num_boxes == 0)
+	return _cairo_clip_set_all_clipped (clip);
+
+    if (! changed)
+	return clip;
+
+    extents_box = clip->boxes[0];
+    for (i = 1; i < clip->num_boxes; i++) {
+	    if (clip->boxes[i].p1.x < extents_box.p1.x)
+		extents_box.p1.x = clip->boxes[i].p1.x;
+
+	    if (clip->boxes[i].p1.y < extents_box.p1.y)
+		extents_box.p1.y = clip->boxes[i].p1.y;
+
+	    if (clip->boxes[i].p2.x > extents_box.p2.x)
+		extents_box.p2.x = clip->boxes[i].p2.x;
+
+	    if (clip->boxes[i].p2.y > extents_box.p2.y)
+		extents_box.p2.y = clip->boxes[i].p2.y;
+    }
+
+    if (clip->path == NULL) {
+	_cairo_box_round_to_rectangle (&extents_box, &clip->extents);
+    } else {
+	cairo_rectangle_int_t extents_rect;
+
+	_cairo_box_round_to_rectangle (&extents_box, &extents_rect);
+	if (! _cairo_rectangle_intersect (&clip->extents, &extents_rect))
+	    return _cairo_clip_set_all_clipped (clip);
+    }
+
+    if (clip->region) {
+	cairo_region_destroy (clip->region);
+	clip->region = NULL;
+    }
+
+    clip->is_region = FALSE;
+    return clip;
+}
+
+cairo_clip_t *
+_cairo_clip_intersect_box (cairo_clip_t *clip,
+			   const cairo_box_t *box)
+{
+    cairo_rectangle_int_t r;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    _cairo_box_round_to_rectangle (box, &r);
+    if (r.width == 0 || r.height == 0)
+	return _cairo_clip_set_all_clipped (clip);
+
+    return _cairo_clip_intersect_rectangle_box (clip, &r, box);
+}
+
+/* Copy a box set to a clip
+ *
+ * @param boxes  The box set to copy from.
+ * @param clip   The clip to copy to (return buffer).
+ * @returns      Zero if the allocation failed (the clip will be set to
+ *               all-clipped), otherwise non-zero.
+ */
+static cairo_bool_t
+_cairo_boxes_copy_to_clip (const cairo_boxes_t *boxes, cairo_clip_t *clip)
+{
+    /* XXX cow-boxes? */
+    if (boxes->num_boxes == 1) {
+	clip->boxes = &clip->embedded_box;
+	clip->boxes[0] = boxes->chunks.base[0];
+	clip->num_boxes = 1;
+	return TRUE;
+    }
+
+    clip->boxes = _cairo_boxes_to_array (boxes, &clip->num_boxes);
+    if (unlikely (clip->boxes == NULL))
+    {
+	_cairo_clip_set_all_clipped (clip);
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+cairo_clip_t *
+_cairo_clip_intersect_boxes (cairo_clip_t *clip,
+			     const cairo_boxes_t *boxes)
+{
+    cairo_boxes_t clip_boxes;
+    cairo_box_t limits;
+    cairo_rectangle_int_t extents;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    if (boxes->num_boxes == 0)
+	return _cairo_clip_set_all_clipped (clip);
+
+    if (boxes->num_boxes == 1)
+	return _cairo_clip_intersect_box (clip, boxes->chunks.base);
+
+    if (clip == NULL)
+	clip = _cairo_clip_create ();
+
+    if (clip->num_boxes) {
+	_cairo_boxes_init_for_array (&clip_boxes, clip->boxes, clip->num_boxes);
+	if (unlikely (_cairo_boxes_intersect (&clip_boxes, boxes, &clip_boxes))) {
+	    clip = _cairo_clip_set_all_clipped (clip);
+	    goto out;
+	}
+
+	if (clip->boxes != &clip->embedded_box)
+	    free (clip->boxes);
+
+	clip->boxes = NULL;
+	boxes = &clip_boxes;
+    }
+
+    if (boxes->num_boxes == 0) {
+	clip = _cairo_clip_set_all_clipped (clip);
+	goto out;
+    }
+
+    _cairo_boxes_copy_to_clip (boxes, clip);
+
+    _cairo_boxes_extents (boxes, &limits);
+
+    _cairo_box_round_to_rectangle (&limits, &extents);
+    if (clip->path == NULL) {
+	clip->extents = extents;
+    } else if (! _cairo_rectangle_intersect (&clip->extents, &extents)) {
+	clip = _cairo_clip_set_all_clipped (clip);
+	goto out;
+    }
+
+    if (clip->region) {
+	cairo_region_destroy (clip->region);
+	clip->region = NULL;
+    }
+    clip->is_region = FALSE;
+
+out:
+    if (boxes == &clip_boxes)
+	_cairo_boxes_fini (&clip_boxes);
+
+    return clip;
+}
+
+cairo_clip_t *
+_cairo_clip_intersect_rectangle (cairo_clip_t       *clip,
+				 const cairo_rectangle_int_t *r)
+{
+    cairo_box_t box;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    if (r->width == 0 || r->height == 0)
+	return _cairo_clip_set_all_clipped (clip);
+
+    _cairo_box_from_rectangle_int (&box, r);
+
+    return _cairo_clip_intersect_rectangle_box (clip, r, &box);
+}
+
+struct reduce {
+    cairo_clip_t *clip;
+    cairo_box_t limit;
+    cairo_box_t extents;
+    cairo_bool_t inside;
+
+    cairo_point_t current_point;
+    cairo_point_t last_move_to;
+};
+
+static void
+_add_clipped_edge (struct reduce *r,
+		   const cairo_point_t *p1,
+		   const cairo_point_t *p2,
+		   int y1, int y2)
+{
+    cairo_fixed_t x;
+
+    x = _cairo_edge_compute_intersection_x_for_y (p1, p2, y1);
+    if (x < r->extents.p1.x)
+	r->extents.p1.x = x;
+
+    x = _cairo_edge_compute_intersection_x_for_y (p1, p2, y2);
+    if (x > r->extents.p2.x)
+	r->extents.p2.x = x;
+
+    if (y1 < r->extents.p1.y)
+	r->extents.p1.y = y1;
+
+    if (y2 > r->extents.p2.y)
+	r->extents.p2.y = y2;
+
+    r->inside = TRUE;
+}
+
+static void
+_add_edge (struct reduce *r,
+	   const cairo_point_t *p1,
+	   const cairo_point_t *p2)
+{
+    int top, bottom;
+    int top_y, bot_y;
+    int n;
+
+    if (p1->y < p2->y) {
+	top = p1->y;
+	bottom = p2->y;
+    } else {
+	top = p2->y;
+	bottom = p1->y;
+    }
+
+    if (bottom < r->limit.p1.y || top > r->limit.p2.y)
+	return;
+
+    if (p1->x > p2->x) {
+	const cairo_point_t *t = p1;
+	p1 = p2;
+	p2 = t;
+    }
+
+    if (p2->x <= r->limit.p1.x || p1->x >= r->limit.p2.x)
+	return;
+
+    for (n = 0; n < r->clip->num_boxes; n++) {
+	const cairo_box_t *limits = &r->clip->boxes[n];
+
+	if (bottom < limits->p1.y || top > limits->p2.y)
+	    continue;
+
+	if (p2->x <= limits->p1.x || p1->x >= limits->p2.x)
+	    continue;
+
+	if (p1->x >= limits->p1.x && p2->x <= limits->p1.x) {
+	    top_y = top;
+	    bot_y = bottom;
+	} else {
+	    int p1_y, p2_y;
+
+	    p1_y = _cairo_edge_compute_intersection_y_for_x (p1, p2,
+							     limits->p1.x);
+	    p2_y = _cairo_edge_compute_intersection_y_for_x (p1, p2,
+							     limits->p2.x);
+	    if (p1_y < p2_y) {
+		top_y = p1_y;
+		bot_y = p2_y;
+	    } else {
+		top_y = p2_y;
+		bot_y = p1_y;
+	    }
+
+	    if (top_y < top)
+		top_y = top;
+	    if (bot_y > bottom)
+		bot_y = bottom;
+	}
+
+	if (top_y < limits->p1.y)
+	    top_y = limits->p1.y;
+
+	if (bot_y > limits->p2.y)
+	    bot_y = limits->p2.y;
+	if (bot_y > top_y)
+	    _add_clipped_edge (r, p1, p2, top_y, bot_y);
+    }
+}
+
+static cairo_status_t
+_reduce_line_to (void *closure,
+		       const cairo_point_t *point)
+{
+    struct reduce *r = closure;
+
+    _add_edge (r, &r->current_point, point);
+    r->current_point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_reduce_close (void *closure)
+{
+    struct reduce *r = closure;
+
+    return _reduce_line_to (r, &r->last_move_to);
+}
+
+static cairo_status_t
+_reduce_move_to (void *closure,
+		 const cairo_point_t *point)
+{
+    struct reduce *r = closure;
+    cairo_status_t status;
+
+    /* close current subpath */
+    status = _reduce_close (closure);
+
+    /* make sure that the closure represents a degenerate path */
+    r->current_point = *point;
+    r->last_move_to = *point;
+
+    return status;
+}
+
+static cairo_clip_t *
+_cairo_clip_reduce_to_boxes (cairo_clip_t *clip)
+{
+    struct reduce r;
+    cairo_clip_path_t *clip_path;
+    cairo_status_t status;
+
+	return clip;
+    if (clip->path == NULL)
+	return clip;
+
+    r.clip = clip;
+    r.extents.p1.x = r.extents.p1.y = INT_MAX;
+    r.extents.p2.x = r.extents.p2.y = INT_MIN;
+    r.inside = FALSE;
+
+    r.limit.p1.x = _cairo_fixed_from_int (clip->extents.x);
+    r.limit.p1.y = _cairo_fixed_from_int (clip->extents.y);
+    r.limit.p2.x = _cairo_fixed_from_int (clip->extents.x + clip->extents.width);
+    r.limit.p2.y = _cairo_fixed_from_int (clip->extents.y + clip->extents.height);
+
+    clip_path = clip->path;
+    do {
+	r.current_point.x = 0;
+	r.current_point.y = 0;
+	r.last_move_to = r.current_point;
+
+	status = _cairo_path_fixed_interpret_flat (&clip_path->path,
+						   _reduce_move_to,
+						   _reduce_line_to,
+						   _reduce_close,
+						   &r,
+						   clip_path->tolerance);
+	assert (status == CAIRO_STATUS_SUCCESS);
+	_reduce_close (&r);
+    } while ((clip_path = clip_path->prev));
+
+    if (! r.inside) {
+	_cairo_clip_path_destroy (clip->path);
+	clip->path = NULL;
+    }
+
+    return _cairo_clip_intersect_box (clip, &r.extents);
+}
+
+cairo_clip_t *
+_cairo_clip_reduce_to_rectangle (const cairo_clip_t *clip,
+				 const cairo_rectangle_int_t *r)
+{
+    cairo_clip_t *copy;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return (cairo_clip_t *) clip;
+
+    if (_cairo_clip_contains_rectangle (clip, r))
+	return _cairo_clip_intersect_rectangle (NULL, r);
+
+    copy = _cairo_clip_copy_intersect_rectangle (clip, r);
+    if (_cairo_clip_is_all_clipped (copy))
+	return copy;
+
+    return _cairo_clip_reduce_to_boxes (copy);
+}
+
+cairo_clip_t *
+_cairo_clip_reduce_for_composite (const cairo_clip_t *clip,
+				  cairo_composite_rectangles_t *extents)
+{
+    const cairo_rectangle_int_t *r;
+
+    r = extents->is_bounded ? &extents->bounded : &extents->unbounded;
+    return _cairo_clip_reduce_to_rectangle (clip, r);
+}
+
+cairo_clip_t *
+_cairo_clip_from_boxes (const cairo_boxes_t *boxes)
+{
+    cairo_box_t extents;
+    cairo_clip_t *clip = _cairo_clip_create ();
+    if (clip == NULL)
+	return _cairo_clip_set_all_clipped (clip);
+
+    if (unlikely (! _cairo_boxes_copy_to_clip (boxes, clip)))
+	return clip;
+
+    _cairo_boxes_extents (boxes, &extents);
+    _cairo_box_round_to_rectangle (&extents, &clip->extents);
+
+    return clip;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-clip-inline.h b/libs/cairo-1.16.0/src/cairo-clip-inline.h
new file mode 100644
index 0000000..a9f2326
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-inline.h
@@ -0,0 +1,83 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_CLIP_INLINE_H
+#define CAIRO_CLIP_INLINE_H
+
+#include "cairo-clip-private.h"
+
+static inline cairo_bool_t _cairo_clip_is_all_clipped(const cairo_clip_t *clip)
+{
+    return clip == &__cairo_clip_all;
+}
+
+static inline cairo_clip_t *
+_cairo_clip_set_all_clipped (cairo_clip_t *clip)
+{
+    _cairo_clip_destroy (clip);
+    return (cairo_clip_t *) &__cairo_clip_all;
+}
+
+static inline cairo_clip_t *
+_cairo_clip_copy_intersect_rectangle (const cairo_clip_t       *clip,
+				      const cairo_rectangle_int_t *r)
+{
+    return _cairo_clip_intersect_rectangle (_cairo_clip_copy (clip), r);
+}
+
+static inline cairo_clip_t *
+_cairo_clip_copy_intersect_clip (const cairo_clip_t *clip,
+				 const cairo_clip_t *other)
+{
+    return _cairo_clip_intersect_clip (_cairo_clip_copy (clip), other);
+}
+
+static inline void
+_cairo_clip_steal_boxes (cairo_clip_t *clip, cairo_boxes_t *boxes)
+{
+    _cairo_boxes_init_for_array (boxes, clip->boxes, clip->num_boxes);
+    clip->boxes = NULL;
+    clip->num_boxes = 0;
+}
+
+static inline void
+_cairo_clip_unsteal_boxes (cairo_clip_t *clip, cairo_boxes_t *boxes)
+{
+    clip->boxes = boxes->chunks.base;
+    clip->num_boxes = boxes->num_boxes;
+}
+
+#endif /* CAIRO_CLIP_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-clip-polygon.c b/libs/cairo-1.16.0/src/cairo-clip-polygon.c
new file mode 100644
index 0000000..f40faef
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-polygon.c
@@ -0,0 +1,156 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-gstate-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-region-private.h"
+
+static cairo_bool_t
+can_convert_to_polygon (const cairo_clip_t *clip)
+{
+    cairo_clip_path_t *clip_path = clip->path;
+    cairo_antialias_t antialias = clip_path->antialias;
+
+    while ((clip_path = clip_path->prev) != NULL) {
+	if (clip_path->antialias != antialias)
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+cairo_int_status_t
+_cairo_clip_get_polygon (const cairo_clip_t *clip,
+			 cairo_polygon_t *polygon,
+			 cairo_fill_rule_t *fill_rule,
+			 cairo_antialias_t *antialias)
+{
+    cairo_status_t status;
+    cairo_clip_path_t *clip_path;
+
+    if (_cairo_clip_is_all_clipped (clip)) {
+	_cairo_polygon_init (polygon, NULL, 0);
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    /* If there is no clip, we need an infinite polygon */
+    assert (clip && (clip->path || clip->num_boxes));
+
+    if (clip->path == NULL) {
+	*fill_rule = CAIRO_FILL_RULE_WINDING;
+	*antialias = CAIRO_ANTIALIAS_DEFAULT;
+	return _cairo_polygon_init_box_array (polygon,
+					      clip->boxes,
+					      clip->num_boxes);
+    }
+
+    /* check that residual is all of the same type/tolerance */
+    if (! can_convert_to_polygon (clip))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (clip->num_boxes < 2)
+	_cairo_polygon_init_with_clip (polygon, clip);
+    else
+	_cairo_polygon_init_with_clip (polygon, NULL);
+
+    clip_path = clip->path;
+    *fill_rule = clip_path->fill_rule;
+    *antialias = clip_path->antialias;
+
+    status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,
+						clip_path->tolerance,
+						polygon);
+    if (unlikely (status))
+	goto err;
+
+    if (clip->num_boxes > 1) {
+	status = _cairo_polygon_intersect_with_boxes (polygon, fill_rule,
+						      clip->boxes, clip->num_boxes);
+	if (unlikely (status))
+	    goto err;
+    }
+
+    polygon->limits = NULL;
+    polygon->num_limits = 0;
+
+    while ((clip_path = clip_path->prev) != NULL) {
+	cairo_polygon_t next;
+
+	_cairo_polygon_init (&next, NULL, 0);
+	status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,
+						    clip_path->tolerance,
+						    &next);
+	if (likely (status == CAIRO_STATUS_SUCCESS))
+		status = _cairo_polygon_intersect (polygon, *fill_rule,
+						   &next, clip_path->fill_rule);
+	_cairo_polygon_fini (&next);
+	if (unlikely (status))
+	    goto err;
+
+	*fill_rule = CAIRO_FILL_RULE_WINDING;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+err:
+    _cairo_polygon_fini (polygon);
+    return status;
+}
+
+cairo_bool_t
+_cairo_clip_is_polygon (const cairo_clip_t *clip)
+{
+    if (_cairo_clip_is_all_clipped (clip))
+	return TRUE;
+
+    /* If there is no clip, we need an infinite polygon */
+    if (clip == NULL)
+	return FALSE;
+
+    if (clip->path == NULL)
+	return TRUE;
+
+    /* check that residual is all of the same type/tolerance */
+    return can_convert_to_polygon (clip);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-clip-private.h b/libs/cairo-1.16.0/src/cairo-clip-private.h
new file mode 100644
index 0000000..5fc05a6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-private.h
@@ -0,0 +1,198 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_CLIP_PRIVATE_H
+#define CAIRO_CLIP_PRIVATE_H
+
+#include "cairo-types-private.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-reference-count-private.h"
+
+extern const cairo_private cairo_rectangle_list_t _cairo_rectangles_nil;
+
+struct _cairo_clip_path {
+    cairo_reference_count_t	 ref_count;
+    cairo_path_fixed_t		 path;
+    cairo_fill_rule_t		 fill_rule;
+    double			 tolerance;
+    cairo_antialias_t		 antialias;
+    cairo_clip_path_t		*prev;
+};
+
+struct _cairo_clip {
+    cairo_rectangle_int_t extents;
+    cairo_clip_path_t *path;
+
+    cairo_box_t *boxes;
+    int num_boxes;
+
+    cairo_region_t *region;
+    cairo_bool_t is_region;
+
+    cairo_box_t embedded_box;
+};
+
+cairo_private cairo_clip_t *
+_cairo_clip_create (void);
+
+cairo_private cairo_clip_path_t *
+_cairo_clip_path_reference (cairo_clip_path_t *clip_path);
+
+cairo_private void
+_cairo_clip_path_destroy (cairo_clip_path_t *clip_path);
+
+cairo_private void
+_cairo_clip_destroy (cairo_clip_t *clip);
+
+cairo_private extern const cairo_clip_t __cairo_clip_all;
+
+cairo_private cairo_clip_t *
+_cairo_clip_copy (const cairo_clip_t *clip);
+
+cairo_private cairo_clip_t *
+_cairo_clip_copy_region (const cairo_clip_t *clip);
+
+cairo_private cairo_clip_t *
+_cairo_clip_copy_path (const cairo_clip_t *clip);
+
+cairo_private cairo_clip_t *
+_cairo_clip_translate (cairo_clip_t *clip, int tx, int ty);
+
+cairo_private cairo_clip_t *
+_cairo_clip_transform (cairo_clip_t *clip, const cairo_matrix_t *m);
+
+cairo_private cairo_clip_t *
+_cairo_clip_copy_with_translation (const cairo_clip_t *clip, int tx, int ty);
+
+cairo_private cairo_bool_t
+_cairo_clip_equal (const cairo_clip_t *clip_a,
+		   const cairo_clip_t *clip_b);
+
+cairo_private cairo_clip_t *
+_cairo_clip_intersect_rectangle (cairo_clip_t       *clip,
+				 const cairo_rectangle_int_t *rectangle);
+
+cairo_private cairo_clip_t *
+_cairo_clip_intersect_clip (cairo_clip_t *clip,
+			    const cairo_clip_t *other);
+
+cairo_private cairo_clip_t *
+_cairo_clip_intersect_box (cairo_clip_t       *clip,
+			   const cairo_box_t *box);
+
+cairo_private cairo_clip_t *
+_cairo_clip_intersect_boxes (cairo_clip_t *clip,
+			     const cairo_boxes_t *boxes);
+
+cairo_private cairo_clip_t *
+_cairo_clip_intersect_rectilinear_path (cairo_clip_t       *clip,
+					const cairo_path_fixed_t *path,
+					cairo_fill_rule_t   fill_rule,
+					cairo_antialias_t   antialias);
+
+cairo_private cairo_clip_t *
+_cairo_clip_intersect_path (cairo_clip_t       *clip,
+			    const cairo_path_fixed_t *path,
+			    cairo_fill_rule_t   fill_rule,
+			    double              tolerance,
+			    cairo_antialias_t   antialias);
+
+cairo_private const cairo_rectangle_int_t *
+_cairo_clip_get_extents (const cairo_clip_t *clip);
+
+cairo_private cairo_surface_t *
+_cairo_clip_get_surface (const cairo_clip_t *clip, cairo_surface_t *dst, int *tx, int *ty);
+
+cairo_private cairo_surface_t *
+_cairo_clip_get_image (const cairo_clip_t *clip,
+		       cairo_surface_t *target,
+		       const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_status_t
+_cairo_clip_combine_with_surface (const cairo_clip_t *clip,
+				  cairo_surface_t *dst,
+				  int dst_x, int dst_y);
+
+cairo_private cairo_clip_t *
+_cairo_clip_from_boxes (const cairo_boxes_t *boxes);
+
+cairo_private cairo_region_t *
+_cairo_clip_get_region (const cairo_clip_t *clip);
+
+cairo_private cairo_bool_t
+_cairo_clip_is_region (const cairo_clip_t *clip);
+
+cairo_private cairo_clip_t *
+_cairo_clip_reduce_to_rectangle (const cairo_clip_t *clip,
+				 const cairo_rectangle_int_t *r);
+
+cairo_private cairo_clip_t *
+_cairo_clip_reduce_for_composite (const cairo_clip_t *clip,
+				  cairo_composite_rectangles_t *extents);
+
+cairo_private cairo_bool_t
+_cairo_clip_contains_rectangle (const cairo_clip_t *clip,
+				const cairo_rectangle_int_t *rect);
+
+cairo_private cairo_bool_t
+_cairo_clip_contains_box (const cairo_clip_t *clip,
+			  const cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_clip_contains_extents (const cairo_clip_t *clip,
+			      const cairo_composite_rectangles_t *extents);
+
+cairo_private cairo_rectangle_list_t*
+_cairo_clip_copy_rectangle_list (cairo_clip_t *clip, cairo_gstate_t *gstate);
+
+cairo_private cairo_rectangle_list_t *
+_cairo_rectangle_list_create_in_error (cairo_status_t status);
+
+cairo_private cairo_bool_t
+_cairo_clip_is_polygon (const cairo_clip_t *clip);
+
+cairo_private cairo_int_status_t
+_cairo_clip_get_polygon (const cairo_clip_t *clip,
+			 cairo_polygon_t *polygon,
+			 cairo_fill_rule_t *fill_rule,
+			 cairo_antialias_t *antialias);
+
+#endif /* CAIRO_CLIP_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-clip-region.c b/libs/cairo-1.16.0/src/cairo-clip-region.c
new file mode 100644
index 0000000..e3f4891
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-region.c
@@ -0,0 +1,123 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-gstate-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-region-private.h"
+
+static void
+_cairo_clip_extract_region (cairo_clip_t *clip)
+{
+    cairo_rectangle_int_t stack_rects[CAIRO_STACK_ARRAY_LENGTH (cairo_rectangle_int_t)];
+    cairo_rectangle_int_t *r = stack_rects;
+    cairo_bool_t is_region;
+    int i;
+
+    if (clip->num_boxes == 0)
+	return;
+
+    if (clip->num_boxes > ARRAY_LENGTH (stack_rects)) {
+	r = _cairo_malloc_ab (clip->num_boxes, sizeof (cairo_rectangle_int_t));
+	if (r == NULL){
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return;
+	}
+    }
+
+    is_region = clip->path == NULL;
+    for (i = 0; i < clip->num_boxes; i++) {
+	cairo_box_t *b = &clip->boxes[i];
+	if (is_region)
+	    is_region =
+		_cairo_fixed_is_integer (b->p1.x | b->p1.y |  b->p2.x | b->p2.y);
+	r[i].x = _cairo_fixed_integer_floor (b->p1.x);
+	r[i].y = _cairo_fixed_integer_floor (b->p1.y);
+	r[i].width  = _cairo_fixed_integer_ceil (b->p2.x) - r[i].x;
+	r[i].height = _cairo_fixed_integer_ceil (b->p2.y) - r[i].y;
+    }
+    clip->is_region = is_region;
+
+    clip->region = cairo_region_create_rectangles (r, i);
+
+    if (r != stack_rects)
+	free (r);
+}
+
+cairo_region_t *
+_cairo_clip_get_region (const cairo_clip_t *clip)
+{
+    if (clip == NULL)
+	return NULL;
+
+    if (clip->region == NULL)
+	_cairo_clip_extract_region ((cairo_clip_t *) clip);
+
+    return clip->region;
+}
+
+cairo_bool_t
+_cairo_clip_is_region (const cairo_clip_t *clip)
+{
+    if (clip == NULL)
+	return TRUE;
+
+    if (clip->is_region)
+	return TRUE;
+
+    /* XXX Geometric reduction? */
+
+    if (clip->path)
+	return FALSE;
+
+    if (clip->num_boxes == 0)
+	return TRUE;
+
+    if (clip->region == NULL)
+	_cairo_clip_extract_region ((cairo_clip_t *) clip);
+
+    return clip->is_region;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-clip-surface.c b/libs/cairo-1.16.0/src/cairo-clip-surface.c
new file mode 100644
index 0000000..85feaa6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-surface.c
@@ -0,0 +1,240 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-gstate-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-region-private.h"
+
+cairo_status_t
+_cairo_clip_combine_with_surface (const cairo_clip_t *clip,
+				  cairo_surface_t *dst,
+				  int dst_x, int dst_y)
+{
+    cairo_clip_path_t *copy_path;
+    cairo_clip_path_t *clip_path;
+    cairo_clip_t *copy;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    copy = _cairo_clip_copy_with_translation (clip, -dst_x, -dst_y);
+    copy_path = copy->path;
+    copy->path = NULL;
+
+    if (copy->boxes) {
+	status = _cairo_surface_paint (dst,
+				       CAIRO_OPERATOR_IN,
+				       &_cairo_pattern_white.base,
+				       copy);
+    }
+
+    clip = NULL;
+    if (_cairo_clip_is_region (copy))
+	clip = copy;
+    clip_path = copy_path;
+    while (status == CAIRO_STATUS_SUCCESS && clip_path) {
+	status = _cairo_surface_fill (dst,
+				      CAIRO_OPERATOR_IN,
+				      &_cairo_pattern_white.base,
+				      &clip_path->path,
+				      clip_path->fill_rule,
+				      clip_path->tolerance,
+				      clip_path->antialias,
+				      clip);
+	clip_path = clip_path->prev;
+    }
+
+    copy->path = copy_path;
+    _cairo_clip_destroy (copy);
+    return status;
+}
+
+static cairo_status_t
+_cairo_path_fixed_add_box (cairo_path_fixed_t *path,
+			   const cairo_box_t *box,
+			   cairo_fixed_t fx,
+			   cairo_fixed_t fy)
+{
+    cairo_status_t status;
+
+    status = _cairo_path_fixed_move_to (path, box->p1.x + fx, box->p1.y + fy);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p2.x + fx, box->p1.y + fy);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p2.x + fx, box->p2.y + fy);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p1.x + fx, box->p2.y + fy);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_path_fixed_close_path (path);
+}
+
+cairo_surface_t *
+_cairo_clip_get_surface (const cairo_clip_t *clip,
+			 cairo_surface_t *target,
+			 int *tx, int *ty)
+{
+    cairo_surface_t *surface;
+    cairo_status_t status;
+    cairo_clip_t *copy, *region;
+    cairo_clip_path_t *copy_path, *clip_path;
+
+    if (clip->num_boxes) {
+	cairo_path_fixed_t path;
+	int i;
+
+	surface = _cairo_surface_create_scratch (target,
+						 CAIRO_CONTENT_ALPHA,
+						 clip->extents.width,
+						 clip->extents.height,
+						 CAIRO_COLOR_TRANSPARENT);
+	if (unlikely (surface->status))
+	    return surface;
+
+	_cairo_path_fixed_init (&path);
+	status = CAIRO_STATUS_SUCCESS;
+	for (i = 0; status == CAIRO_STATUS_SUCCESS && i < clip->num_boxes; i++) {
+	    status = _cairo_path_fixed_add_box (&path, &clip->boxes[i],
+						-_cairo_fixed_from_int (clip->extents.x),
+						-_cairo_fixed_from_int (clip->extents.y));
+	}
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = _cairo_surface_fill (surface,
+					  CAIRO_OPERATOR_ADD,
+					  &_cairo_pattern_white.base,
+					  &path,
+					  CAIRO_FILL_RULE_WINDING,
+					  1.,
+					  CAIRO_ANTIALIAS_DEFAULT,
+					  NULL);
+	_cairo_path_fixed_fini (&path);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (surface);
+	    return _cairo_surface_create_in_error (status);
+	}
+    } else {
+	surface = _cairo_surface_create_scratch (target,
+						 CAIRO_CONTENT_ALPHA,
+						 clip->extents.width,
+						 clip->extents.height,
+						 CAIRO_COLOR_WHITE);
+	if (unlikely (surface->status))
+	    return surface;
+    }
+
+    copy = _cairo_clip_copy_with_translation (clip,
+					      -clip->extents.x,
+					      -clip->extents.y);
+    copy_path = copy->path;
+    copy->path = NULL;
+
+    region = copy;
+    if (! _cairo_clip_is_region (copy))
+	region = _cairo_clip_copy_region (copy);
+
+    status = CAIRO_STATUS_SUCCESS;
+    clip_path = copy_path;
+    while (status == CAIRO_STATUS_SUCCESS && clip_path) {
+	status = _cairo_surface_fill (surface,
+				      CAIRO_OPERATOR_IN,
+				      &_cairo_pattern_white.base,
+				      &clip_path->path,
+				      clip_path->fill_rule,
+				      clip_path->tolerance,
+				      clip_path->antialias,
+				      region);
+	clip_path = clip_path->prev;
+    }
+
+    copy->path = copy_path;
+    _cairo_clip_destroy (copy);
+    if (region != copy)
+	_cairo_clip_destroy (region);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    *tx = clip->extents.x;
+    *ty = clip->extents.y;
+    return surface;
+}
+
+cairo_surface_t *
+_cairo_clip_get_image (const cairo_clip_t *clip,
+		       cairo_surface_t *target,
+		       const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_t *surface;
+    cairo_status_t status;
+
+    surface = cairo_surface_create_similar_image (target,
+						  CAIRO_FORMAT_A8,
+						  extents->width,
+						  extents->height);
+    if (unlikely (surface->status))
+	return surface;
+
+    status = _cairo_surface_paint (surface, CAIRO_OPERATOR_SOURCE,
+				   &_cairo_pattern_white.base, NULL);
+    if (likely (status == CAIRO_STATUS_SUCCESS))
+	status = _cairo_clip_combine_with_surface (clip, surface,
+						   extents->x, extents->y);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+    }
+
+    return surface;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-clip-tor-scan-converter.c b/libs/cairo-1.16.0/src/cairo-clip-tor-scan-converter.c
new file mode 100644
index 0000000..2ac1d32
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip-tor-scan-converter.c
@@ -0,0 +1,1845 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* glitter-paths - polygon scan converter
+ *
+ * Copyright (c) 2008  M Joonas Pihlaja
+ * Copyright (c) 2007  David Turner
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+/* This is the Glitter paths scan converter incorporated into cairo.
+ * The source is from commit 734c53237a867a773640bd5b64816249fa1730f8
+ * of
+ *
+ *   https://gitweb.freedesktop.org/?p=users/joonas/glitter-paths
+ */
+/* Glitter-paths is a stand alone polygon rasteriser derived from
+ * David Turner's reimplementation of Tor Anderssons's 15x17
+ * supersampling rasteriser from the Apparition graphics library.  The
+ * main new feature here is cheaply choosing per-scan line between
+ * doing fully analytical coverage computation for an entire row at a
+ * time vs. using a supersampling approach.
+ *
+ * David Turner's code can be found at
+ *
+ *   http://david.freetype.org/rasterizer-shootout/raster-comparison-20070813.tar.bz2
+ *
+ * In particular this file incorporates large parts of ftgrays_tor10.h
+ * from raster-comparison-20070813.tar.bz2
+ */
+/* Overview
+ *
+ * A scan converter's basic purpose to take polygon edges and convert
+ * them into an RLE compressed A8 mask.  This one works in two phases:
+ * gathering edges and generating spans.
+ *
+ * 1) As the user feeds the scan converter edges they are vertically
+ * clipped and bucketted into a _polygon_ data structure.  The edges
+ * are also snapped from the user's coordinates to the subpixel grid
+ * coordinates used during scan conversion.
+ *
+ *     user
+ *      |
+ *      | edges
+ *      V
+ *    polygon buckets
+ *
+ * 2) Generating spans works by performing a vertical sweep of pixel
+ * rows from top to bottom and maintaining an _active_list_ of edges
+ * that intersect the row.  From the active list the fill rule
+ * determines which edges are the left and right edges of the start of
+ * each span, and their contribution is then accumulated into a pixel
+ * coverage list (_cell_list_) as coverage deltas.  Once the coverage
+ * deltas of all edges are known we can form spans of constant pixel
+ * coverage by summing the deltas during a traversal of the cell list.
+ * At the end of a pixel row the cell list is sent to a coverage
+ * blitter for rendering to some target surface.
+ *
+ * The pixel coverages are computed by either supersampling the row
+ * and box filtering a mono rasterisation, or by computing the exact
+ * coverages of edges in the active list.  The supersampling method is
+ * used whenever some edge starts or stops within the row or there are
+ * edge intersections in the row.
+ *
+ *   polygon bucket for       \
+ *   current pixel row        |
+ *      |                     |
+ *      | activate new edges  |  Repeat GRID_Y times if we
+ *      V                     \  are supersampling this row,
+ *   active list              /  or just once if we're computing
+ *      |                     |  analytical coverage.
+ *      | coverage deltas     |
+ *      V                     |
+ *   pixel coverage list     /
+ *      |
+ *      V
+ *   coverage blitter
+ */
+#include "cairoint.h"
+#include "cairo-spans-private.h"
+#include "cairo-error-private.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <setjmp.h>
+
+/* The input coordinate scale and the rasterisation grid scales. */
+#define GLITTER_INPUT_BITS CAIRO_FIXED_FRAC_BITS
+#define GRID_X_BITS CAIRO_FIXED_FRAC_BITS
+#define GRID_Y 15
+
+/* Set glitter up to use a cairo span renderer to do the coverage
+ * blitting. */
+struct pool;
+struct cell_list;
+
+/*-------------------------------------------------------------------------
+ * glitter-paths.h
+ */
+
+/* "Input scaled" numbers are fixed precision reals with multiplier
+ * 2**GLITTER_INPUT_BITS.  Input coordinates are given to glitter as
+ * pixel scaled numbers.  These get converted to the internal grid
+ * scaled numbers as soon as possible. Internal overflow is possible
+ * if GRID_X/Y inside glitter-paths.c is larger than
+ * 1<<GLITTER_INPUT_BITS. */
+#ifndef GLITTER_INPUT_BITS
+#  define GLITTER_INPUT_BITS 8
+#endif
+#define GLITTER_INPUT_SCALE (1<<GLITTER_INPUT_BITS)
+typedef int glitter_input_scaled_t;
+
+/* Opaque type for scan converting. */
+typedef struct glitter_scan_converter glitter_scan_converter_t;
+
+/*-------------------------------------------------------------------------
+ * glitter-paths.c: Implementation internal types
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+/* All polygon coordinates are snapped onto a subsample grid. "Grid
+ * scaled" numbers are fixed precision reals with multiplier GRID_X or
+ * GRID_Y. */
+typedef int grid_scaled_t;
+typedef int grid_scaled_x_t;
+typedef int grid_scaled_y_t;
+
+/* Default x/y scale factors.
+ *  You can either define GRID_X/Y_BITS to get a power-of-two scale
+ *  or define GRID_X/Y separately. */
+#if !defined(GRID_X) && !defined(GRID_X_BITS)
+#  define GRID_X_BITS 8
+#endif
+#if !defined(GRID_Y) && !defined(GRID_Y_BITS)
+#  define GRID_Y 15
+#endif
+
+/* Use GRID_X/Y_BITS to define GRID_X/Y if they're available. */
+#ifdef GRID_X_BITS
+#  define GRID_X (1 << GRID_X_BITS)
+#endif
+#ifdef GRID_Y_BITS
+#  define GRID_Y (1 << GRID_Y_BITS)
+#endif
+
+/* The GRID_X_TO_INT_FRAC macro splits a grid scaled coordinate into
+ * integer and fractional parts. The integer part is floored. */
+#if defined(GRID_X_TO_INT_FRAC)
+  /* do nothing */
+#elif defined(GRID_X_BITS)
+#  define GRID_X_TO_INT_FRAC(x, i, f) \
+	_GRID_TO_INT_FRAC_shift(x, i, f, GRID_X_BITS)
+#else
+#  define GRID_X_TO_INT_FRAC(x, i, f) \
+	_GRID_TO_INT_FRAC_general(x, i, f, GRID_X)
+#endif
+
+#define _GRID_TO_INT_FRAC_general(t, i, f, m) do {	\
+    (i) = (t) / (m);					\
+    (f) = (t) % (m);					\
+    if ((f) < 0) {					\
+	--(i);						\
+	(f) += (m);					\
+    }							\
+} while (0)
+
+#define _GRID_TO_INT_FRAC_shift(t, i, f, b) do {	\
+    (f) = (t) & ((1 << (b)) - 1);			\
+    (i) = (t) >> (b);					\
+} while (0)
+
+/* A grid area is a real in [0,1] scaled by 2*GRID_X*GRID_Y.  We want
+ * to be able to represent exactly areas of subpixel trapezoids whose
+ * vertices are given in grid scaled coordinates.  The scale factor
+ * comes from needing to accurately represent the area 0.5*dx*dy of a
+ * triangle with base dx and height dy in grid scaled numbers. */
+typedef int grid_area_t;
+#define GRID_XY (2*GRID_X*GRID_Y) /* Unit area on the grid. */
+
+/* GRID_AREA_TO_ALPHA(area): map [0,GRID_XY] to [0,255]. */
+#if GRID_XY == 510
+#  define GRID_AREA_TO_ALPHA(c)	  (((c)+1) >> 1)
+#elif GRID_XY == 255
+#  define  GRID_AREA_TO_ALPHA(c)  (c)
+#elif GRID_XY == 64
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 2) | -(((c) & 0x40) >> 6))
+#elif GRID_XY == 128
+#  define  GRID_AREA_TO_ALPHA(c)  ((((c) << 1) | -((c) >> 7)) & 255)
+#elif GRID_XY == 256
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) | -((c) >> 8)) & 255)
+#elif GRID_XY == 15
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 4) + (c))
+#elif GRID_XY == 2*256*15
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) + ((c)<<4) + 256) >> 9)
+#else
+#  define  GRID_AREA_TO_ALPHA(c)  (((c)*255 + GRID_XY/2) / GRID_XY)
+#endif
+
+#define UNROLL3(x) x x x
+
+struct quorem {
+    int32_t quo;
+    int32_t rem;
+};
+
+/* Header for a chunk of memory in a memory pool. */
+struct _pool_chunk {
+    /* # bytes used in this chunk. */
+    size_t size;
+
+    /* # bytes total in this chunk */
+    size_t capacity;
+
+    /* Pointer to the previous chunk or %NULL if this is the sentinel
+     * chunk in the pool header. */
+    struct _pool_chunk *prev_chunk;
+
+    /* Actual data starts here.	 Well aligned for pointers. */
+};
+
+/* A memory pool.  This is supposed to be embedded on the stack or
+ * within some other structure.	 It may optionally be followed by an
+ * embedded array from which requests are fulfilled until
+ * malloc needs to be called to allocate a first real chunk. */
+struct pool {
+    /* Chunk we're allocating from. */
+    struct _pool_chunk *current;
+
+    jmp_buf *jmp;
+
+    /* Free list of previously allocated chunks.  All have >= default
+     * capacity. */
+    struct _pool_chunk *first_free;
+
+    /* The default capacity of a chunk. */
+    size_t default_capacity;
+
+    /* Header for the sentinel chunk.  Directly following the pool
+     * struct should be some space for embedded elements from which
+     * the sentinel chunk allocates from. */
+    struct _pool_chunk sentinel[1];
+};
+
+/* A polygon edge. */
+struct edge {
+    /* Next in y-bucket or active list. */
+    struct edge *next;
+
+    /* Current x coordinate while the edge is on the active
+     * list. Initialised to the x coordinate of the top of the
+     * edge. The quotient is in grid_scaled_x_t units and the
+     * remainder is mod dy in grid_scaled_y_t units.*/
+    struct quorem x;
+
+    /* Advance of the current x when moving down a subsample line. */
+    struct quorem dxdy;
+
+    /* Advance of the current x when moving down a full pixel
+     * row. Only initialised when the height of the edge is large
+     * enough that there's a chance the edge could be stepped by a
+     * full row's worth of subsample rows at a time. */
+    struct quorem dxdy_full;
+
+    /* The clipped y of the top of the edge. */
+    grid_scaled_y_t ytop;
+
+    /* y2-y1 after orienting the edge downwards.  */
+    grid_scaled_y_t dy;
+
+    /* Number of subsample rows remaining to scan convert of this
+     * edge. */
+    grid_scaled_y_t height_left;
+
+    /* Original sign of the edge: +1 for downwards, -1 for upwards
+     * edges.  */
+    int dir;
+    int vertical;
+    int clip;
+};
+
+/* Number of subsample rows per y-bucket. Must be GRID_Y. */
+#define EDGE_Y_BUCKET_HEIGHT GRID_Y
+
+#define EDGE_Y_BUCKET_INDEX(y, ymin) (((y) - (ymin))/EDGE_Y_BUCKET_HEIGHT)
+
+/* A collection of sorted and vertically clipped edges of the polygon.
+ * Edges are moved from the polygon to an active list while scan
+ * converting. */
+struct polygon {
+    /* The vertical clip extents. */
+    grid_scaled_y_t ymin, ymax;
+
+    /* Array of edges all starting in the same bucket.	An edge is put
+     * into bucket EDGE_BUCKET_INDEX(edge->ytop, polygon->ymin) when
+     * it is added to the polygon. */
+    struct edge **y_buckets;
+    struct edge *y_buckets_embedded[64];
+
+    struct {
+	struct pool base[1];
+	struct edge embedded[32];
+    } edge_pool;
+};
+
+/* A cell records the effect on pixel coverage of polygon edges
+ * passing through a pixel.  It contains two accumulators of pixel
+ * coverage.
+ *
+ * Consider the effects of a polygon edge on the coverage of a pixel
+ * it intersects and that of the following one.  The coverage of the
+ * following pixel is the height of the edge multiplied by the width
+ * of the pixel, and the coverage of the pixel itself is the area of
+ * the trapezoid formed by the edge and the right side of the pixel.
+ *
+ * +-----------------------+-----------------------+
+ * |                       |                       |
+ * |                       |                       |
+ * |_______________________|_______________________|
+ * |   \...................|.......................|\
+ * |    \..................|.......................| |
+ * |     \.................|.......................| |
+ * |      \....covered.....|.......................| |
+ * |       \....area.......|.......................| } covered height
+ * |        \..............|.......................| |
+ * |uncovered\.............|.......................| |
+ * |  area    \............|.......................| |
+ * |___________\...........|.......................|/
+ * |                       |                       |
+ * |                       |                       |
+ * |                       |                       |
+ * +-----------------------+-----------------------+
+ *
+ * Since the coverage of the following pixel will always be a multiple
+ * of the width of the pixel, we can store the height of the covered
+ * area instead.  The coverage of the pixel itself is the total
+ * coverage minus the area of the uncovered area to the left of the
+ * edge.  As it's faster to compute the uncovered area we only store
+ * that and subtract it from the total coverage later when forming
+ * spans to blit.
+ *
+ * The heights and areas are signed, with left edges of the polygon
+ * having positive sign and right edges having negative sign.  When
+ * two edges intersect they swap their left/rightness so their
+ * contribution above and below the intersection point must be
+ * computed separately. */
+struct cell {
+    struct cell		*next;
+    int			 x;
+    grid_area_t		 uncovered_area;
+    grid_scaled_y_t	 covered_height;
+    grid_scaled_y_t	 clipped_height;
+};
+
+/* A cell list represents the scan line sparsely as cells ordered by
+ * ascending x.  It is geared towards scanning the cells in order
+ * using an internal cursor. */
+struct cell_list {
+    /* Sentinel nodes */
+    struct cell head, tail;
+
+    /* Cursor state for iterating through the cell list. */
+    struct cell *cursor;
+
+    /* Cells in the cell list are owned by the cell list and are
+     * allocated from this pool.  */
+    struct {
+	struct pool base[1];
+	struct cell embedded[32];
+    } cell_pool;
+};
+
+struct cell_pair {
+    struct cell *cell1;
+    struct cell *cell2;
+};
+
+/* The active list contains edges in the current scan line ordered by
+ * the x-coordinate of the intercept of the edge and the scan line. */
+struct active_list {
+    /* Leftmost edge on the current scan line. */
+    struct edge *head;
+
+    /* A lower bound on the height of the active edges is used to
+     * estimate how soon some active edge ends.	 We can't advance the
+     * scan conversion by a full pixel row if an edge ends somewhere
+     * within it. */
+    grid_scaled_y_t min_height;
+};
+
+struct glitter_scan_converter {
+    struct polygon	polygon[1];
+    struct active_list	active[1];
+    struct cell_list	coverages[1];
+
+    /* Clip box. */
+    grid_scaled_y_t ymin, ymax;
+};
+
+/* Compute the floored division a/b. Assumes / and % perform symmetric
+ * division. */
+inline static struct quorem
+floored_divrem(int a, int b)
+{
+    struct quorem qr;
+    qr.quo = a/b;
+    qr.rem = a%b;
+    if ((a^b)<0 && qr.rem) {
+	qr.quo -= 1;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+/* Compute the floored division (x*a)/b. Assumes / and % perform symmetric
+ * division. */
+static struct quorem
+floored_muldivrem(int x, int a, int b)
+{
+    struct quorem qr;
+    long long xa = (long long)x*a;
+    qr.quo = xa/b;
+    qr.rem = xa%b;
+    if ((xa>=0) != (b>=0) && qr.rem) {
+	qr.quo -= 1;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+static struct _pool_chunk *
+_pool_chunk_init(
+    struct _pool_chunk *p,
+    struct _pool_chunk *prev_chunk,
+    size_t capacity)
+{
+    p->prev_chunk = prev_chunk;
+    p->size = 0;
+    p->capacity = capacity;
+    return p;
+}
+
+static struct _pool_chunk *
+_pool_chunk_create(struct pool *pool, size_t size)
+{
+    struct _pool_chunk *p;
+
+    p = _cairo_malloc (size + sizeof(struct _pool_chunk));
+    if (unlikely (NULL == p))
+	longjmp (*pool->jmp, _cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    return _pool_chunk_init(p, pool->current, size);
+}
+
+static void
+pool_init(struct pool *pool,
+	  jmp_buf *jmp,
+	  size_t default_capacity,
+	  size_t embedded_capacity)
+{
+    pool->jmp = jmp;
+    pool->current = pool->sentinel;
+    pool->first_free = NULL;
+    pool->default_capacity = default_capacity;
+    _pool_chunk_init(pool->sentinel, NULL, embedded_capacity);
+}
+
+static void
+pool_fini(struct pool *pool)
+{
+    struct _pool_chunk *p = pool->current;
+    do {
+	while (NULL != p) {
+	    struct _pool_chunk *prev = p->prev_chunk;
+	    if (p != pool->sentinel)
+		free(p);
+	    p = prev;
+	}
+	p = pool->first_free;
+	pool->first_free = NULL;
+    } while (NULL != p);
+}
+
+/* Satisfy an allocation by first allocating a new large enough chunk
+ * and adding it to the head of the pool's chunk list. This function
+ * is called as a fallback if pool_alloc() couldn't do a quick
+ * allocation from the current chunk in the pool. */
+static void *
+_pool_alloc_from_new_chunk(
+    struct pool *pool,
+    size_t size)
+{
+    struct _pool_chunk *chunk;
+    void *obj;
+    size_t capacity;
+
+    /* If the allocation is smaller than the default chunk size then
+     * try getting a chunk off the free list.  Force alloc of a new
+     * chunk for large requests. */
+    capacity = size;
+    chunk = NULL;
+    if (size < pool->default_capacity) {
+	capacity = pool->default_capacity;
+	chunk = pool->first_free;
+	if (chunk) {
+	    pool->first_free = chunk->prev_chunk;
+	    _pool_chunk_init(chunk, pool->current, chunk->capacity);
+	}
+    }
+
+    if (NULL == chunk)
+	chunk = _pool_chunk_create (pool, capacity);
+    pool->current = chunk;
+
+    obj = ((unsigned char*)chunk + sizeof(*chunk) + chunk->size);
+    chunk->size += size;
+    return obj;
+}
+
+/* Allocate size bytes from the pool.  The first allocated address
+ * returned from a pool is aligned to sizeof(void*).  Subsequent
+ * addresses will maintain alignment as long as multiples of void* are
+ * allocated.  Returns the address of a new memory area or %NULL on
+ * allocation failures.	 The pool retains ownership of the returned
+ * memory. */
+inline static void *
+pool_alloc (struct pool *pool, size_t size)
+{
+    struct _pool_chunk *chunk = pool->current;
+
+    if (size <= chunk->capacity - chunk->size) {
+	void *obj = ((unsigned char*)chunk + sizeof(*chunk) + chunk->size);
+	chunk->size += size;
+	return obj;
+    } else {
+	return _pool_alloc_from_new_chunk(pool, size);
+    }
+}
+
+/* Relinquish all pool_alloced memory back to the pool. */
+static void
+pool_reset (struct pool *pool)
+{
+    /* Transfer all used chunks to the chunk free list. */
+    struct _pool_chunk *chunk = pool->current;
+    if (chunk != pool->sentinel) {
+	while (chunk->prev_chunk != pool->sentinel) {
+	    chunk = chunk->prev_chunk;
+	}
+	chunk->prev_chunk = pool->first_free;
+	pool->first_free = pool->current;
+    }
+    /* Reset the sentinel as the current chunk. */
+    pool->current = pool->sentinel;
+    pool->sentinel->size = 0;
+}
+
+/* Rewinds the cell list's cursor to the beginning.  After rewinding
+ * we're good to cell_list_find() the cell any x coordinate. */
+inline static void
+cell_list_rewind (struct cell_list *cells)
+{
+    cells->cursor = &cells->head;
+}
+
+/* Rewind the cell list if its cursor has been advanced past x. */
+inline static void
+cell_list_maybe_rewind (struct cell_list *cells, int x)
+{
+    struct cell *tail = cells->cursor;
+    if (tail->x > x)
+	cell_list_rewind (cells);
+}
+
+static void
+cell_list_init(struct cell_list *cells, jmp_buf *jmp)
+{
+    pool_init(cells->cell_pool.base, jmp,
+	      256*sizeof(struct cell),
+	      sizeof(cells->cell_pool.embedded));
+    cells->tail.next = NULL;
+    cells->tail.x = INT_MAX;
+    cells->head.x = INT_MIN;
+    cells->head.next = &cells->tail;
+    cell_list_rewind (cells);
+}
+
+static void
+cell_list_fini(struct cell_list *cells)
+{
+    pool_fini (cells->cell_pool.base);
+}
+
+/* Empty the cell list.  This is called at the start of every pixel
+ * row. */
+inline static void
+cell_list_reset (struct cell_list *cells)
+{
+    cell_list_rewind (cells);
+    cells->head.next = &cells->tail;
+    pool_reset (cells->cell_pool.base);
+}
+
+static struct cell *
+cell_list_alloc (struct cell_list *cells,
+		 struct cell *tail,
+		 int x)
+{
+    struct cell *cell;
+
+    cell = pool_alloc (cells->cell_pool.base, sizeof (struct cell));
+    cell->next = tail->next;
+    tail->next = cell;
+    cell->x = x;
+    cell->uncovered_area = 0;
+    cell->covered_height = 0;
+    cell->clipped_height = 0;
+    return cell;
+}
+
+/* Find a cell at the given x-coordinate.  Returns %NULL if a new cell
+ * needed to be allocated but couldn't be.  Cells must be found with
+ * non-decreasing x-coordinate until the cell list is rewound using
+ * cell_list_rewind(). Ownership of the returned cell is retained by
+ * the cell list. */
+inline static struct cell *
+cell_list_find (struct cell_list *cells, int x)
+{
+    struct cell *tail = cells->cursor;
+
+    while (1) {
+	UNROLL3({
+	    if (tail->next->x > x)
+		break;
+	    tail = tail->next;
+	});
+    }
+
+    if (tail->x != x)
+	tail = cell_list_alloc (cells, tail, x);
+    return cells->cursor = tail;
+
+}
+
+/* Find two cells at x1 and x2.	 This is exactly equivalent
+ * to
+ *
+ *   pair.cell1 = cell_list_find(cells, x1);
+ *   pair.cell2 = cell_list_find(cells, x2);
+ *
+ * except with less function call overhead. */
+inline static struct cell_pair
+cell_list_find_pair(struct cell_list *cells, int x1, int x2)
+{
+    struct cell_pair pair;
+
+    pair.cell1 = cells->cursor;
+    while (1) {
+	UNROLL3({
+	    if (pair.cell1->next->x > x1)
+		break;
+	    pair.cell1 = pair.cell1->next;
+	});
+    }
+    if (pair.cell1->x != x1) {
+	struct cell *cell = pool_alloc (cells->cell_pool.base,
+					sizeof (struct cell));
+	cell->x = x1;
+	cell->uncovered_area = 0;
+	cell->covered_height = 0;
+	cell->clipped_height = 0;
+	cell->next = pair.cell1->next;
+	pair.cell1->next = cell;
+	pair.cell1 = cell;
+    }
+
+    pair.cell2 = pair.cell1;
+    while (1) {
+	UNROLL3({
+	    if (pair.cell2->next->x > x2)
+		break;
+	    pair.cell2 = pair.cell2->next;
+	});
+    }
+    if (pair.cell2->x != x2) {
+	struct cell *cell = pool_alloc (cells->cell_pool.base,
+					sizeof (struct cell));
+	cell->uncovered_area = 0;
+	cell->covered_height = 0;
+	cell->clipped_height = 0;
+	cell->x = x2;
+	cell->next = pair.cell2->next;
+	pair.cell2->next = cell;
+	pair.cell2 = cell;
+    }
+
+    cells->cursor = pair.cell2;
+    return pair;
+}
+
+/* Add a subpixel span covering [x1, x2) to the coverage cells. */
+inline static void
+cell_list_add_subspan(struct cell_list *cells,
+		      grid_scaled_x_t x1,
+		      grid_scaled_x_t x2)
+{
+    int ix1, fx1;
+    int ix2, fx2;
+
+    GRID_X_TO_INT_FRAC(x1, ix1, fx1);
+    GRID_X_TO_INT_FRAC(x2, ix2, fx2);
+
+    if (ix1 != ix2) {
+	struct cell_pair p;
+	p = cell_list_find_pair(cells, ix1, ix2);
+	p.cell1->uncovered_area += 2*fx1;
+	++p.cell1->covered_height;
+	p.cell2->uncovered_area -= 2*fx2;
+	--p.cell2->covered_height;
+    } else {
+	struct cell *cell = cell_list_find(cells, ix1);
+	cell->uncovered_area += 2*(fx1-fx2);
+    }
+}
+
+/* Adds the analytical coverage of an edge crossing the current pixel
+ * row to the coverage cells and advances the edge's x position to the
+ * following row.
+ *
+ * This function is only called when we know that during this pixel row:
+ *
+ * 1) The relative order of all edges on the active list doesn't
+ * change.  In particular, no edges intersect within this row to pixel
+ * precision.
+ *
+ * 2) No new edges start in this row.
+ *
+ * 3) No existing edges end mid-row.
+ *
+ * This function depends on being called with all edges from the
+ * active list in the order they appear on the list (i.e. with
+ * non-decreasing x-coordinate.)  */
+static void
+cell_list_render_edge(
+    struct cell_list *cells,
+    struct edge *edge,
+    int sign)
+{
+    grid_scaled_y_t y1, y2, dy;
+    grid_scaled_x_t dx;
+    int ix1, ix2;
+    grid_scaled_x_t fx1, fx2;
+
+    struct quorem x1 = edge->x;
+    struct quorem x2 = x1;
+
+    if (! edge->vertical) {
+	x2.quo += edge->dxdy_full.quo;
+	x2.rem += edge->dxdy_full.rem;
+	if (x2.rem >= 0) {
+	    ++x2.quo;
+	    x2.rem -= edge->dy;
+	}
+
+	edge->x = x2;
+    }
+
+    GRID_X_TO_INT_FRAC(x1.quo, ix1, fx1);
+    GRID_X_TO_INT_FRAC(x2.quo, ix2, fx2);
+
+    /* Edge is entirely within a column? */
+    if (ix1 == ix2) {
+	/* We always know that ix1 is >= the cell list cursor in this
+	 * case due to the no-intersections precondition.  */
+	struct cell *cell = cell_list_find(cells, ix1);
+	cell->covered_height += sign*GRID_Y;
+	cell->uncovered_area += sign*(fx1 + fx2)*GRID_Y;
+	return;
+    }
+
+    /* Orient the edge left-to-right. */
+    dx = x2.quo - x1.quo;
+    if (dx >= 0) {
+	y1 = 0;
+	y2 = GRID_Y;
+    } else {
+	int tmp;
+	tmp = ix1; ix1 = ix2; ix2 = tmp;
+	tmp = fx1; fx1 = fx2; fx2 = tmp;
+	dx = -dx;
+	sign = -sign;
+	y1 = GRID_Y;
+	y2 = 0;
+    }
+    dy = y2 - y1;
+
+    /* Add coverage for all pixels [ix1,ix2] on this row crossed
+     * by the edge. */
+    {
+	struct cell_pair pair;
+	struct quorem y = floored_divrem((GRID_X - fx1)*dy, dx);
+
+	/* When rendering a previous edge on the active list we may
+	 * advance the cell list cursor past the leftmost pixel of the
+	 * current edge even though the two edges don't intersect.
+	 * e.g. consider two edges going down and rightwards:
+	 *
+	 *  --\_+---\_+-----+-----+----
+	 *      \_    \_    |     |
+	 *      | \_  | \_  |     |
+	 *      |   \_|   \_|     |
+	 *      |     \_    \_    |
+	 *  ----+-----+-\---+-\---+----
+	 *
+	 * The left edge touches cells past the starting cell of the
+	 * right edge.  Fortunately such cases are rare.
+	 *
+	 * The rewinding is never necessary if the current edge stays
+	 * within a single column because we've checked before calling
+	 * this function that the active list order won't change. */
+	cell_list_maybe_rewind(cells, ix1);
+
+	pair = cell_list_find_pair(cells, ix1, ix1+1);
+	pair.cell1->uncovered_area += sign*y.quo*(GRID_X + fx1);
+	pair.cell1->covered_height += sign*y.quo;
+	y.quo += y1;
+
+	if (ix1+1 < ix2) {
+	    struct quorem dydx_full = floored_divrem(GRID_X*dy, dx);
+	    struct cell *cell = pair.cell2;
+
+	    ++ix1;
+	    do {
+		grid_scaled_y_t y_skip = dydx_full.quo;
+		y.rem += dydx_full.rem;
+		if (y.rem >= dx) {
+		    ++y_skip;
+		    y.rem -= dx;
+		}
+
+		y.quo += y_skip;
+
+		y_skip *= sign;
+		cell->uncovered_area += y_skip*GRID_X;
+		cell->covered_height += y_skip;
+
+		++ix1;
+		cell = cell_list_find(cells, ix1);
+	    } while (ix1 != ix2);
+
+	    pair.cell2 = cell;
+	}
+	pair.cell2->uncovered_area += sign*(y2 - y.quo)*fx2;
+	pair.cell2->covered_height += sign*(y2 - y.quo);
+    }
+}
+
+static void
+polygon_init (struct polygon *polygon, jmp_buf *jmp)
+{
+    polygon->ymin = polygon->ymax = 0;
+    polygon->y_buckets = polygon->y_buckets_embedded;
+    pool_init (polygon->edge_pool.base, jmp,
+	       8192 - sizeof (struct _pool_chunk),
+	       sizeof (polygon->edge_pool.embedded));
+}
+
+static void
+polygon_fini (struct polygon *polygon)
+{
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    pool_fini (polygon->edge_pool.base);
+}
+
+/* Empties the polygon of all edges. The polygon is then prepared to
+ * receive new edges and clip them to the vertical range
+ * [ymin,ymax). */
+static cairo_status_t
+polygon_reset (struct polygon *polygon,
+	       grid_scaled_y_t ymin,
+	       grid_scaled_y_t ymax)
+{
+    unsigned h = ymax - ymin;
+    unsigned num_buckets = EDGE_Y_BUCKET_INDEX(ymax + EDGE_Y_BUCKET_HEIGHT-1,
+					       ymin);
+
+    pool_reset(polygon->edge_pool.base);
+
+    if (unlikely (h > 0x7FFFFFFFU - EDGE_Y_BUCKET_HEIGHT))
+	goto bail_no_mem; /* even if you could, you wouldn't want to. */
+
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    polygon->y_buckets =  polygon->y_buckets_embedded;
+    if (num_buckets > ARRAY_LENGTH (polygon->y_buckets_embedded)) {
+	polygon->y_buckets = _cairo_malloc_ab (num_buckets,
+					       sizeof (struct edge *));
+	if (unlikely (NULL == polygon->y_buckets))
+	    goto bail_no_mem;
+    }
+    memset (polygon->y_buckets, 0, num_buckets * sizeof (struct edge *));
+
+    polygon->ymin = ymin;
+    polygon->ymax = ymax;
+    return CAIRO_STATUS_SUCCESS;
+
+ bail_no_mem:
+    polygon->ymin = 0;
+    polygon->ymax = 0;
+    return CAIRO_STATUS_NO_MEMORY;
+}
+
+static void
+_polygon_insert_edge_into_its_y_bucket(
+    struct polygon *polygon,
+    struct edge *e)
+{
+    unsigned ix = EDGE_Y_BUCKET_INDEX(e->ytop, polygon->ymin);
+    struct edge **ptail = &polygon->y_buckets[ix];
+    e->next = *ptail;
+    *ptail = e;
+}
+
+inline static void
+polygon_add_edge (struct polygon *polygon,
+		  const cairo_edge_t *edge,
+		  int clip)
+{
+    struct edge *e;
+    grid_scaled_x_t dx;
+    grid_scaled_y_t dy;
+    grid_scaled_y_t ytop, ybot;
+    grid_scaled_y_t ymin = polygon->ymin;
+    grid_scaled_y_t ymax = polygon->ymax;
+
+    assert (edge->bottom > edge->top);
+
+    if (unlikely (edge->top >= ymax || edge->bottom <= ymin))
+	return;
+
+    e = pool_alloc (polygon->edge_pool.base, sizeof (struct edge));
+
+    dx = edge->line.p2.x - edge->line.p1.x;
+    dy = edge->line.p2.y - edge->line.p1.y;
+    e->dy = dy;
+    e->dir = edge->dir;
+    e->clip = clip;
+
+    ytop = edge->top >= ymin ? edge->top : ymin;
+    ybot = edge->bottom <= ymax ? edge->bottom : ymax;
+    e->ytop = ytop;
+    e->height_left = ybot - ytop;
+
+    if (dx == 0) {
+	e->vertical = TRUE;
+	e->x.quo = edge->line.p1.x;
+	e->x.rem = 0;
+	e->dxdy.quo = 0;
+	e->dxdy.rem = 0;
+	e->dxdy_full.quo = 0;
+	e->dxdy_full.rem = 0;
+    } else {
+	e->vertical = FALSE;
+	e->dxdy = floored_divrem (dx, dy);
+	if (ytop == edge->line.p1.y) {
+	    e->x.quo = edge->line.p1.x;
+	    e->x.rem = 0;
+	} else {
+	    e->x = floored_muldivrem (ytop - edge->line.p1.y, dx, dy);
+	    e->x.quo += edge->line.p1.x;
+	}
+
+	if (e->height_left >= GRID_Y) {
+	    e->dxdy_full = floored_muldivrem (GRID_Y, dx, dy);
+	} else {
+	    e->dxdy_full.quo = 0;
+	    e->dxdy_full.rem = 0;
+	}
+    }
+
+    _polygon_insert_edge_into_its_y_bucket (polygon, e);
+
+    e->x.rem -= dy;		/* Bias the remainder for faster
+				 * edge advancement. */
+}
+
+static void
+active_list_reset (struct active_list *active)
+{
+    active->head = NULL;
+    active->min_height = 0;
+}
+
+static void
+active_list_init(struct active_list *active)
+{
+    active_list_reset(active);
+}
+
+/*
+ * Merge two sorted edge lists.
+ * Input:
+ *  - head_a: The head of the first list.
+ *  - head_b: The head of the second list; head_b cannot be NULL.
+ * Output:
+ * Returns the head of the merged list.
+ *
+ * Implementation notes:
+ * To make it fast (in particular, to reduce to an insertion sort whenever
+ * one of the two input lists only has a single element) we iterate through
+ * a list until its head becomes greater than the head of the other list,
+ * then we switch their roles. As soon as one of the two lists is empty, we
+ * just attach the other one to the current list and exit.
+ * Writes to memory are only needed to "switch" lists (as it also requires
+ * attaching to the output list the list which we will be iterating next) and
+ * to attach the last non-empty list.
+ */
+static struct edge *
+merge_sorted_edges (struct edge *head_a, struct edge *head_b)
+{
+    struct edge *head, **next;
+    int32_t x;
+
+    if (head_a == NULL)
+	return head_b;
+
+    next = &head;
+    if (head_a->x.quo <= head_b->x.quo) {
+	head = head_a;
+    } else {
+	head = head_b;
+	goto start_with_b;
+    }
+
+    do {
+	x = head_b->x.quo;
+	while (head_a != NULL && head_a->x.quo <= x) {
+	    next = &head_a->next;
+	    head_a = head_a->next;
+	}
+
+	*next = head_b;
+	if (head_a == NULL)
+	    return head;
+
+start_with_b:
+	x = head_a->x.quo;
+	while (head_b != NULL && head_b->x.quo <= x) {
+	    next = &head_b->next;
+	    head_b = head_b->next;
+	}
+
+	*next = head_a;
+	if (head_b == NULL)
+	    return head;
+    } while (1);
+}
+
+/*
+ * Sort (part of) a list.
+ * Input:
+ *  - list: The list to be sorted; list cannot be NULL.
+ *  - limit: Recursion limit.
+ * Output:
+ *  - head_out: The head of the sorted list containing the first 2^(level+1) elements of the
+ *              input list; if the input list has fewer elements, head_out be a sorted list
+ *              containing all the elements of the input list.
+ * Returns the head of the list of unprocessed elements (NULL if the sorted list contains
+ * all the elements of the input list).
+ *
+ * Implementation notes:
+ * Special case single element list, unroll/inline the sorting of the first two elements.
+ * Some tail recursion is used since we iterate on the bottom-up solution of the problem
+ * (we start with a small sorted list and keep merging other lists of the same size to it).
+ */
+static struct edge *
+sort_edges (struct edge  *list,
+	    unsigned int  level,
+	    struct edge **head_out)
+{
+    struct edge *head_other, *remaining;
+    unsigned int i;
+
+    head_other = list->next;
+
+    /* Single element list -> return */
+    if (head_other == NULL) {
+	*head_out = list;
+	return NULL;
+    }
+
+    /* Unroll the first iteration of the following loop (halves the number of calls to merge_sorted_edges):
+     *  - Initialize remaining to be the list containing the elements after the second in the input list.
+     *  - Initialize *head_out to be the sorted list containing the first two element.
+     */
+    remaining = head_other->next;
+    if (list->x.quo <= head_other->x.quo) {
+	*head_out = list;
+	/* list->next = head_other; */ /* The input list is already like this. */
+	head_other->next = NULL;
+    } else {
+	*head_out = head_other;
+	head_other->next = list;
+	list->next = NULL;
+    }
+
+    for (i = 0; i < level && remaining; i++) {
+	/* Extract a sorted list of the same size as *head_out
+	 * (2^(i+1) elements) from the list of remaining elements. */
+	remaining = sort_edges (remaining, i, &head_other);
+	*head_out = merge_sorted_edges (*head_out, head_other);
+    }
+
+    /* *head_out now contains (at most) 2^(level+1) elements. */
+
+    return remaining;
+}
+
+/* Test if the edges on the active list can be safely advanced by a
+ * full row without intersections or any edges ending. */
+inline static int
+active_list_can_step_full_row (struct active_list *active)
+{
+    const struct edge *e;
+    int prev_x = INT_MIN;
+
+    /* Recomputes the minimum height of all edges on the active
+     * list if we have been dropping edges. */
+    if (active->min_height <= 0) {
+	int min_height = INT_MAX;
+
+	e = active->head;
+	while (NULL != e) {
+	    if (e->height_left < min_height)
+		min_height = e->height_left;
+	    e = e->next;
+	}
+
+	active->min_height = min_height;
+    }
+
+    if (active->min_height < GRID_Y)
+	return 0;
+
+    /* Check for intersections as no edges end during the next row. */
+    e = active->head;
+    while (NULL != e) {
+	struct quorem x = e->x;
+
+	if (! e->vertical) {
+	    x.quo += e->dxdy_full.quo;
+	    x.rem += e->dxdy_full.rem;
+	    if (x.rem >= 0)
+		++x.quo;
+	}
+
+	if (x.quo <= prev_x)
+	    return 0;
+
+	prev_x = x.quo;
+	e = e->next;
+    }
+
+    return 1;
+}
+
+/* Merges edges on the given subpixel row from the polygon to the
+ * active_list. */
+inline static void
+active_list_merge_edges_from_polygon(struct active_list *active,
+				     struct edge **ptail,
+				     grid_scaled_y_t y,
+				     struct polygon *polygon)
+{
+    /* Split off the edges on the current subrow and merge them into
+     * the active list. */
+    int min_height = active->min_height;
+    struct edge *subrow_edges = NULL;
+    struct edge *tail = *ptail;
+
+    do {
+	struct edge *next = tail->next;
+
+	if (y == tail->ytop) {
+	    tail->next = subrow_edges;
+	    subrow_edges = tail;
+
+	    if (tail->height_left < min_height)
+		min_height = tail->height_left;
+
+	    *ptail = next;
+	} else
+	    ptail = &tail->next;
+
+	tail = next;
+    } while (tail);
+
+    if (subrow_edges) {
+	sort_edges (subrow_edges, UINT_MAX, &subrow_edges);
+	active->head = merge_sorted_edges (active->head, subrow_edges);
+	active->min_height = min_height;
+    }
+}
+
+/* Advance the edges on the active list by one subsample row by
+ * updating their x positions.  Drop edges from the list that end. */
+inline static void
+active_list_substep_edges(struct active_list *active)
+{
+    struct edge **cursor = &active->head;
+    grid_scaled_x_t prev_x = INT_MIN;
+    struct edge *unsorted = NULL;
+    struct edge *edge = *cursor;
+
+    do {
+	UNROLL3({
+	    struct edge *next;
+
+	    if (NULL == edge)
+		break;
+
+	    next = edge->next;
+	    if (--edge->height_left) {
+		edge->x.quo += edge->dxdy.quo;
+		edge->x.rem += edge->dxdy.rem;
+		if (edge->x.rem >= 0) {
+		    ++edge->x.quo;
+		    edge->x.rem -= edge->dy;
+		}
+
+		if (edge->x.quo < prev_x) {
+		    *cursor = next;
+		    edge->next = unsorted;
+		    unsorted = edge;
+		} else {
+		    prev_x = edge->x.quo;
+		    cursor = &edge->next;
+		}
+	    } else {
+		 *cursor = next;
+	    }
+	    edge = next;
+	})
+    } while (1);
+
+    if (unsorted) {
+	sort_edges (unsorted, UINT_MAX, &unsorted);
+	active->head = merge_sorted_edges (active->head, unsorted);
+    }
+}
+
+inline static void
+apply_nonzero_fill_rule_for_subrow (struct active_list *active,
+				    struct cell_list *coverages)
+{
+    struct edge *edge = active->head;
+    int winding = 0;
+    int xstart;
+    int xend;
+
+    cell_list_rewind (coverages);
+
+    while (NULL != edge) {
+	xstart = edge->x.quo;
+	winding = edge->dir;
+	while (1) {
+	    edge = edge->next;
+	    if (NULL == edge) {
+		ASSERT_NOT_REACHED;
+		return;
+	    }
+
+	    winding += edge->dir;
+	    if (0 == winding) {
+		if (edge->next == NULL || edge->next->x.quo != edge->x.quo)
+		    break;
+	    }
+	}
+
+	xend = edge->x.quo;
+	cell_list_add_subspan (coverages, xstart, xend);
+
+	edge = edge->next;
+    }
+}
+
+static void
+apply_evenodd_fill_rule_for_subrow (struct active_list *active,
+				    struct cell_list *coverages)
+{
+    struct edge *edge = active->head;
+    int xstart;
+    int xend;
+
+    cell_list_rewind (coverages);
+
+    while (NULL != edge) {
+	xstart = edge->x.quo;
+
+	while (1) {
+	    edge = edge->next;
+	    if (NULL == edge) {
+		ASSERT_NOT_REACHED;
+		return;
+	    }
+
+	    if (edge->next == NULL || edge->next->x.quo != edge->x.quo)
+		break;
+
+	    edge = edge->next;
+	}
+
+	xend = edge->x.quo;
+	cell_list_add_subspan (coverages, xstart, xend);
+
+	edge = edge->next;
+    }
+}
+
+static void
+apply_nonzero_fill_rule_and_step_edges (struct active_list *active,
+					struct cell_list *coverages)
+{
+    struct edge **cursor = &active->head;
+    struct edge *left_edge;
+
+    left_edge = *cursor;
+    while (NULL != left_edge) {
+	struct edge *right_edge;
+	int winding = left_edge->dir;
+
+	left_edge->height_left -= GRID_Y;
+	if (left_edge->height_left)
+	    cursor = &left_edge->next;
+	else
+	    *cursor = left_edge->next;
+
+	while (1) {
+	    right_edge = *cursor;
+	    if (NULL == right_edge) {
+		cell_list_render_edge (coverages, left_edge, +1);
+		return;
+	    }
+
+	    right_edge->height_left -= GRID_Y;
+	    if (right_edge->height_left)
+		cursor = &right_edge->next;
+	    else
+		*cursor = right_edge->next;
+
+	    winding += right_edge->dir;
+	    if (0 == winding) {
+		if (right_edge->next == NULL ||
+		    right_edge->next->x.quo != right_edge->x.quo)
+		{
+		    break;
+		}
+	    }
+
+	    if (! right_edge->vertical) {
+		right_edge->x.quo += right_edge->dxdy_full.quo;
+		right_edge->x.rem += right_edge->dxdy_full.rem;
+		if (right_edge->x.rem >= 0) {
+		    ++right_edge->x.quo;
+		    right_edge->x.rem -= right_edge->dy;
+		}
+	    }
+	}
+
+	cell_list_render_edge (coverages, left_edge, +1);
+	cell_list_render_edge (coverages, right_edge, -1);
+
+	left_edge = *cursor;
+    }
+}
+
+static void
+apply_evenodd_fill_rule_and_step_edges (struct active_list *active,
+					struct cell_list *coverages)
+{
+    struct edge **cursor = &active->head;
+    struct edge *left_edge;
+
+    left_edge = *cursor;
+    while (NULL != left_edge) {
+	struct edge *right_edge;
+
+	left_edge->height_left -= GRID_Y;
+	if (left_edge->height_left)
+	    cursor = &left_edge->next;
+	else
+	    *cursor = left_edge->next;
+
+	while (1) {
+	    right_edge = *cursor;
+	    if (NULL == right_edge) {
+		cell_list_render_edge (coverages, left_edge, +1);
+		return;
+	    }
+
+	    right_edge->height_left -= GRID_Y;
+	    if (right_edge->height_left)
+		cursor = &right_edge->next;
+	    else
+		*cursor = right_edge->next;
+
+	    if (right_edge->next == NULL ||
+		right_edge->next->x.quo != right_edge->x.quo)
+	    {
+		break;
+	    }
+
+	    if (! right_edge->vertical) {
+		right_edge->x.quo += right_edge->dxdy_full.quo;
+		right_edge->x.rem += right_edge->dxdy_full.rem;
+		if (right_edge->x.rem >= 0) {
+		    ++right_edge->x.quo;
+		    right_edge->x.rem -= right_edge->dy;
+		}
+	    }
+	}
+
+	cell_list_render_edge (coverages, left_edge, +1);
+	cell_list_render_edge (coverages, right_edge, -1);
+
+	left_edge = *cursor;
+    }
+}
+
+static void
+_glitter_scan_converter_init(glitter_scan_converter_t *converter, jmp_buf *jmp)
+{
+    polygon_init(converter->polygon, jmp);
+    active_list_init(converter->active);
+    cell_list_init(converter->coverages, jmp);
+    converter->ymin=0;
+    converter->ymax=0;
+}
+
+static void
+_glitter_scan_converter_fini(glitter_scan_converter_t *converter)
+{
+    polygon_fini(converter->polygon);
+    cell_list_fini(converter->coverages);
+    converter->ymin=0;
+    converter->ymax=0;
+}
+
+static grid_scaled_t
+int_to_grid_scaled(int i, int scale)
+{
+    /* Clamp to max/min representable scaled number. */
+    if (i >= 0) {
+	if (i >= INT_MAX/scale)
+	    i = INT_MAX/scale;
+    }
+    else {
+	if (i <= INT_MIN/scale)
+	    i = INT_MIN/scale;
+    }
+    return i*scale;
+}
+
+#define int_to_grid_scaled_x(x) int_to_grid_scaled((x), GRID_X)
+#define int_to_grid_scaled_y(x) int_to_grid_scaled((x), GRID_Y)
+
+static cairo_status_t
+glitter_scan_converter_reset(glitter_scan_converter_t *converter,
+			     int ymin, int ymax)
+{
+    cairo_status_t status;
+
+    converter->ymin = 0;
+    converter->ymax = 0;
+
+    ymin = int_to_grid_scaled_y(ymin);
+    ymax = int_to_grid_scaled_y(ymax);
+
+    active_list_reset(converter->active);
+    cell_list_reset(converter->coverages);
+    status = polygon_reset(converter->polygon, ymin, ymax);
+    if (status)
+	return status;
+
+    converter->ymin = ymin;
+    converter->ymax = ymax;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* INPUT_TO_GRID_X/Y (in_coord, out_grid_scaled, grid_scale)
+ *   These macros convert an input coordinate in the client's
+ *   device space to the rasterisation grid.
+ */
+/* Gah.. this bit of ugly defines INPUT_TO_GRID_X/Y so as to use
+ * shifts if possible, and something saneish if not.
+ */
+#if !defined(INPUT_TO_GRID_Y) && defined(GRID_Y_BITS) && GRID_Y_BITS <= GLITTER_INPUT_BITS
+#  define INPUT_TO_GRID_Y(in, out) (out) = (in) >> (GLITTER_INPUT_BITS - GRID_Y_BITS)
+#else
+#  define INPUT_TO_GRID_Y(in, out) INPUT_TO_GRID_general(in, out, GRID_Y)
+#endif
+
+#if !defined(INPUT_TO_GRID_X) && defined(GRID_X_BITS) && GRID_X_BITS <= GLITTER_INPUT_BITS
+#  define INPUT_TO_GRID_X(in, out) (out) = (in) >> (GLITTER_INPUT_BITS - GRID_X_BITS)
+#else
+#  define INPUT_TO_GRID_X(in, out) INPUT_TO_GRID_general(in, out, GRID_X)
+#endif
+
+#define INPUT_TO_GRID_general(in, out, grid_scale) do {		\
+	long long tmp__ = (long long)(grid_scale) * (in);	\
+	tmp__ >>= GLITTER_INPUT_BITS;				\
+	(out) = tmp__;						\
+} while (0)
+
+static void
+glitter_scan_converter_add_edge (glitter_scan_converter_t *converter,
+				 const cairo_edge_t *edge,
+				 int clip)
+{
+    cairo_edge_t e;
+
+    INPUT_TO_GRID_Y (edge->top, e.top);
+    INPUT_TO_GRID_Y (edge->bottom, e.bottom);
+    if (e.top >= e.bottom)
+	return;
+
+    /* XXX: possible overflows if GRID_X/Y > 2**GLITTER_INPUT_BITS */
+    INPUT_TO_GRID_Y (edge->line.p1.y, e.line.p1.y);
+    INPUT_TO_GRID_Y (edge->line.p2.y, e.line.p2.y);
+    if (e.line.p1.y == e.line.p2.y)
+	return;
+
+    INPUT_TO_GRID_X (edge->line.p1.x, e.line.p1.x);
+    INPUT_TO_GRID_X (edge->line.p2.x, e.line.p2.x);
+
+    e.dir = edge->dir;
+
+    polygon_add_edge (converter->polygon, &e, clip);
+}
+
+static cairo_bool_t
+active_list_is_vertical (struct active_list *active)
+{
+    struct edge *e;
+
+    for (e = active->head; e != NULL; e = e->next) {
+	if (! e->vertical)
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+static void
+step_edges (struct active_list *active, int count)
+{
+    struct edge **cursor = &active->head;
+    struct edge *edge;
+
+    for (edge = *cursor; edge != NULL; edge = *cursor) {
+	edge->height_left -= GRID_Y * count;
+	if (edge->height_left)
+	    cursor = &edge->next;
+	else
+	    *cursor = edge->next;
+    }
+}
+
+static cairo_status_t
+blit_coverages (struct cell_list *cells,
+		cairo_span_renderer_t *renderer,
+		struct pool *span_pool,
+		int y, int height)
+{
+    struct cell *cell = cells->head.next;
+    int prev_x = -1;
+    int cover = 0, last_cover = 0;
+    int clip = 0;
+    cairo_half_open_span_t *spans;
+    unsigned num_spans;
+
+    assert (cell != &cells->tail);
+
+    /* Count number of cells remaining. */
+    {
+	struct cell *next = cell;
+	num_spans = 2;
+	while (next->next) {
+	    next = next->next;
+	    ++num_spans;
+	}
+	num_spans = 2*num_spans;
+    }
+
+    /* Allocate enough spans for the row. */
+    pool_reset (span_pool);
+    spans = pool_alloc (span_pool, sizeof(spans[0])*num_spans);
+    num_spans = 0;
+
+    /* Form the spans from the coverages and areas. */
+    for (; cell->next; cell = cell->next) {
+	int x = cell->x;
+	int area;
+
+	if (x > prev_x && cover != last_cover) {
+	    spans[num_spans].x = prev_x;
+	    spans[num_spans].coverage = GRID_AREA_TO_ALPHA (cover);
+	    spans[num_spans].inverse = 0;
+	    last_cover = cover;
+	    ++num_spans;
+	}
+
+	cover += cell->covered_height*GRID_X*2;
+	clip += cell->covered_height*GRID_X*2;
+	area = cover - cell->uncovered_area;
+
+	if (area != last_cover) {
+	    spans[num_spans].x = x;
+	    spans[num_spans].coverage = GRID_AREA_TO_ALPHA (area);
+	    spans[num_spans].inverse = 0;
+	    last_cover = area;
+	    ++num_spans;
+	}
+
+	prev_x = x+1;
+    }
+
+    /* Dump them into the renderer. */
+    return renderer->render_rows (renderer, y, height, spans, num_spans);
+}
+
+static void
+glitter_scan_converter_render(glitter_scan_converter_t *converter,
+			      int nonzero_fill,
+			      cairo_span_renderer_t *span_renderer,
+			      struct pool *span_pool)
+{
+    int i, j;
+    int ymax_i = converter->ymax / GRID_Y;
+    int ymin_i = converter->ymin / GRID_Y;
+    int h = ymax_i - ymin_i;
+    struct polygon *polygon = converter->polygon;
+    struct cell_list *coverages = converter->coverages;
+    struct active_list *active = converter->active;
+
+    /* Render each pixel row. */
+    for (i = 0; i < h; i = j) {
+	int do_full_step = 0;
+
+	j = i + 1;
+
+	/* Determine if we can ignore this row or use the full pixel
+	 * stepper. */
+	if (GRID_Y == EDGE_Y_BUCKET_HEIGHT && ! polygon->y_buckets[i]) {
+	    if (! active->head) {
+		for (; j < h && ! polygon->y_buckets[j]; j++)
+		    ;
+		continue;
+	    }
+
+	    do_full_step = active_list_can_step_full_row (active);
+	}
+
+	if (do_full_step) {
+	    /* Step by a full pixel row's worth. */
+	    if (nonzero_fill)
+		apply_nonzero_fill_rule_and_step_edges (active, coverages);
+	    else
+		apply_evenodd_fill_rule_and_step_edges (active, coverages);
+
+	    if (active_list_is_vertical (active)) {
+		while (j < h &&
+		       polygon->y_buckets[j] == NULL &&
+		       active->min_height >= 2*GRID_Y)
+		{
+		    active->min_height -= GRID_Y;
+		    j++;
+		}
+		if (j != i + 1)
+		    step_edges (active, j - (i + 1));
+	    }
+	} else {
+	    grid_scaled_y_t suby;
+
+	    /* Subsample this row. */
+	    for (suby = 0; suby < GRID_Y; suby++) {
+		grid_scaled_y_t y = (i+ymin_i)*GRID_Y + suby;
+
+		if (polygon->y_buckets[i]) {
+		    active_list_merge_edges_from_polygon (active,
+							  &polygon->y_buckets[i], y,
+							  polygon);
+		}
+
+		if (nonzero_fill)
+		    apply_nonzero_fill_rule_for_subrow (active, coverages);
+		else
+		    apply_evenodd_fill_rule_for_subrow (active, coverages);
+
+		active_list_substep_edges(active);
+	    }
+	}
+
+	blit_coverages (coverages, span_renderer, span_pool, i+ymin_i, j -i);
+	cell_list_reset (coverages);
+
+	if (! active->head)
+	    active->min_height = INT_MAX;
+	else
+	    active->min_height -= GRID_Y;
+    }
+}
+
+struct _cairo_clip_tor_scan_converter {
+    cairo_scan_converter_t base;
+
+    glitter_scan_converter_t converter[1];
+    cairo_fill_rule_t fill_rule;
+    cairo_antialias_t antialias;
+
+    cairo_fill_rule_t clip_fill_rule;
+    cairo_antialias_t clip_antialias;
+
+    jmp_buf jmp;
+
+    struct {
+	struct pool base[1];
+	cairo_half_open_span_t embedded[32];
+    } span_pool;
+};
+
+typedef struct _cairo_clip_tor_scan_converter cairo_clip_tor_scan_converter_t;
+
+static void
+_cairo_clip_tor_scan_converter_destroy (void *converter)
+{
+    cairo_clip_tor_scan_converter_t *self = converter;
+    if (self == NULL) {
+	return;
+    }
+    _glitter_scan_converter_fini (self->converter);
+    pool_fini (self->span_pool.base);
+    free(self);
+}
+
+static cairo_status_t
+_cairo_clip_tor_scan_converter_generate (void			*converter,
+				    cairo_span_renderer_t	*renderer)
+{
+    cairo_clip_tor_scan_converter_t *self = converter;
+    cairo_status_t status;
+
+    if ((status = setjmp (self->jmp)))
+	return _cairo_scan_converter_set_error (self, _cairo_error (status));
+
+    glitter_scan_converter_render (self->converter,
+				   self->fill_rule == CAIRO_FILL_RULE_WINDING,
+				   renderer,
+				   self->span_pool.base);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_scan_converter_t *
+_cairo_clip_tor_scan_converter_create (cairo_clip_t *clip,
+				       cairo_polygon_t *polygon,
+				       cairo_fill_rule_t fill_rule,
+				       cairo_antialias_t antialias)
+{
+    cairo_clip_tor_scan_converter_t *self;
+    cairo_polygon_t clipper;
+    cairo_status_t status;
+    int i;
+
+    self = calloc (1, sizeof(struct _cairo_clip_tor_scan_converter));
+    if (unlikely (self == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto bail_nomem;
+    }
+
+    self->base.destroy = _cairo_clip_tor_scan_converter_destroy;
+    self->base.generate = _cairo_clip_tor_scan_converter_generate;
+
+    pool_init (self->span_pool.base, &self->jmp,
+	       250 * sizeof(self->span_pool.embedded[0]),
+	       sizeof(self->span_pool.embedded));
+
+    _glitter_scan_converter_init (self->converter, &self->jmp);
+    status = glitter_scan_converter_reset (self->converter,
+					   clip->extents.y,
+					   clip->extents.y + clip->extents.height);
+    if (unlikely (status))
+	goto bail;
+
+    self->fill_rule = fill_rule;
+    self->antialias = antialias;
+
+    for (i = 0; i < polygon->num_edges; i++)
+	 glitter_scan_converter_add_edge (self->converter,
+					  &polygon->edges[i],
+					  FALSE);
+
+    status = _cairo_clip_get_polygon (clip,
+				      &clipper,
+				      &self->clip_fill_rule,
+				      &self->clip_antialias);
+    if (unlikely (status))
+	goto bail;
+
+    for (i = 0; i < clipper.num_edges; i++)
+	 glitter_scan_converter_add_edge (self->converter,
+					  &clipper.edges[i],
+					  TRUE);
+    _cairo_polygon_fini (&clipper);
+
+    return &self->base;
+
+ bail:
+    self->base.destroy(&self->base);
+ bail_nomem:
+    return _cairo_scan_converter_create_in_error (status);
+}
+
diff --git a/libs/cairo-1.16.0/src/cairo-clip.c b/libs/cairo-1.16.0/src/cairo-clip.c
new file mode 100644
index 0000000..d499bf0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-clip.c
@@ -0,0 +1,838 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-gstate-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-region-private.h"
+
+static freed_pool_t clip_path_pool;
+static freed_pool_t clip_pool;
+
+const cairo_clip_t __cairo_clip_all;
+
+static cairo_clip_path_t *
+_cairo_clip_path_create (cairo_clip_t *clip)
+{
+    cairo_clip_path_t *clip_path;
+
+    clip_path = _freed_pool_get (&clip_path_pool);
+    if (unlikely (clip_path == NULL)) {
+	clip_path = _cairo_malloc (sizeof (cairo_clip_path_t));
+	if (unlikely (clip_path == NULL))
+	    return NULL;
+    }
+
+    CAIRO_REFERENCE_COUNT_INIT (&clip_path->ref_count, 1);
+
+    clip_path->prev = clip->path;
+    clip->path = clip_path;
+
+    return clip_path;
+}
+
+cairo_clip_path_t *
+_cairo_clip_path_reference (cairo_clip_path_t *clip_path)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&clip_path->ref_count));
+
+    _cairo_reference_count_inc (&clip_path->ref_count);
+
+    return clip_path;
+}
+
+void
+_cairo_clip_path_destroy (cairo_clip_path_t *clip_path)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&clip_path->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&clip_path->ref_count))
+	return;
+
+    _cairo_path_fixed_fini (&clip_path->path);
+
+    if (clip_path->prev != NULL)
+	_cairo_clip_path_destroy (clip_path->prev);
+
+    _freed_pool_put (&clip_path_pool, clip_path);
+}
+
+cairo_clip_t *
+_cairo_clip_create (void)
+{
+    cairo_clip_t *clip;
+
+    clip = _freed_pool_get (&clip_pool);
+    if (unlikely (clip == NULL)) {
+	clip = _cairo_malloc (sizeof (cairo_clip_t));
+	if (unlikely (clip == NULL))
+	    return NULL;
+    }
+
+    clip->extents = _cairo_unbounded_rectangle;
+
+    clip->path = NULL;
+    clip->boxes = NULL;
+    clip->num_boxes = 0;
+    clip->region = NULL;
+    clip->is_region = FALSE;
+
+    return clip;
+}
+
+void
+_cairo_clip_destroy (cairo_clip_t *clip)
+{
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return;
+
+    if (clip->path != NULL)
+	_cairo_clip_path_destroy (clip->path);
+
+    if (clip->boxes != &clip->embedded_box)
+	free (clip->boxes);
+    cairo_region_destroy (clip->region);
+
+    _freed_pool_put (&clip_pool, clip);
+}
+
+cairo_clip_t *
+_cairo_clip_copy (const cairo_clip_t *clip)
+{
+    cairo_clip_t *copy;
+
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return (cairo_clip_t *) clip;
+
+    copy = _cairo_clip_create ();
+
+    if (clip->path)
+	copy->path = _cairo_clip_path_reference (clip->path);
+
+    if (clip->num_boxes) {
+	if (clip->num_boxes == 1) {
+	    copy->boxes = &copy->embedded_box;
+	} else {
+	    copy->boxes = _cairo_malloc_ab (clip->num_boxes, sizeof (cairo_box_t));
+	    if (unlikely (copy->boxes == NULL))
+		return _cairo_clip_set_all_clipped (copy);
+	}
+
+	memcpy (copy->boxes, clip->boxes,
+		clip->num_boxes * sizeof (cairo_box_t));
+	copy->num_boxes = clip->num_boxes;
+    }
+
+    copy->extents = clip->extents;
+    copy->region = cairo_region_reference (clip->region);
+    copy->is_region = clip->is_region;
+
+    return copy;
+}
+
+cairo_clip_t *
+_cairo_clip_copy_path (const cairo_clip_t *clip)
+{
+    cairo_clip_t *copy;
+
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return (cairo_clip_t *) clip;
+
+    assert (clip->num_boxes);
+
+    copy = _cairo_clip_create ();
+    copy->extents = clip->extents;
+    if (clip->path)
+	copy->path = _cairo_clip_path_reference (clip->path);
+
+    return copy;
+}
+
+cairo_clip_t *
+_cairo_clip_copy_region (const cairo_clip_t *clip)
+{
+    cairo_clip_t *copy;
+    int i;
+
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return (cairo_clip_t *) clip;
+
+    assert (clip->num_boxes);
+
+    copy = _cairo_clip_create ();
+    copy->extents = clip->extents;
+
+    if (clip->num_boxes == 1) {
+	copy->boxes = &copy->embedded_box;
+    } else {
+	copy->boxes = _cairo_malloc_ab (clip->num_boxes, sizeof (cairo_box_t));
+	if (unlikely (copy->boxes == NULL))
+	    return _cairo_clip_set_all_clipped (copy);
+    }
+
+    for (i = 0; i < clip->num_boxes; i++) {
+	copy->boxes[i].p1.x = _cairo_fixed_floor (clip->boxes[i].p1.x);
+	copy->boxes[i].p1.y = _cairo_fixed_floor (clip->boxes[i].p1.y);
+	copy->boxes[i].p2.x = _cairo_fixed_ceil (clip->boxes[i].p2.x);
+	copy->boxes[i].p2.y = _cairo_fixed_ceil (clip->boxes[i].p2.y);
+    }
+    copy->num_boxes = clip->num_boxes;
+
+    copy->region = cairo_region_reference (clip->region);
+    copy->is_region = TRUE;
+
+    return copy;
+}
+
+cairo_clip_t *
+_cairo_clip_intersect_path (cairo_clip_t       *clip,
+			    const cairo_path_fixed_t *path,
+			    cairo_fill_rule_t   fill_rule,
+			    double              tolerance,
+			    cairo_antialias_t   antialias)
+{
+    cairo_clip_path_t *clip_path;
+    cairo_status_t status;
+    cairo_rectangle_int_t extents;
+    cairo_box_t box;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    /* catch the empty clip path */
+    if (_cairo_path_fixed_fill_is_empty (path))
+	return _cairo_clip_set_all_clipped (clip);
+
+    if (_cairo_path_fixed_is_box (path, &box)) {
+	if (antialias == CAIRO_ANTIALIAS_NONE) {
+	    box.p1.x = _cairo_fixed_round_down (box.p1.x);
+	    box.p1.y = _cairo_fixed_round_down (box.p1.y);
+	    box.p2.x = _cairo_fixed_round_down (box.p2.x);
+	    box.p2.y = _cairo_fixed_round_down (box.p2.y);
+	}
+
+	return _cairo_clip_intersect_box (clip, &box);
+    }
+    if (_cairo_path_fixed_fill_is_rectilinear (path))
+	return _cairo_clip_intersect_rectilinear_path (clip, path,
+						       fill_rule, antialias);
+
+    _cairo_path_fixed_approximate_clip_extents (path, &extents);
+    if (extents.width == 0 || extents.height == 0)
+	return _cairo_clip_set_all_clipped (clip);
+
+    clip = _cairo_clip_intersect_rectangle (clip, &extents);
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    clip_path = _cairo_clip_path_create (clip);
+    if (unlikely (clip_path == NULL))
+	return _cairo_clip_set_all_clipped (clip);
+
+    status = _cairo_path_fixed_init_copy (&clip_path->path, path);
+    if (unlikely (status))
+	return _cairo_clip_set_all_clipped (clip);
+
+    clip_path->fill_rule = fill_rule;
+    clip_path->tolerance = tolerance;
+    clip_path->antialias = antialias;
+
+    if (clip->region) {
+	cairo_region_destroy (clip->region);
+	clip->region = NULL;
+    }
+
+    clip->is_region = FALSE;
+    return clip;
+}
+
+static cairo_clip_t *
+_cairo_clip_intersect_clip_path (cairo_clip_t *clip,
+				 const cairo_clip_path_t *clip_path)
+{
+    if (clip_path->prev)
+	clip = _cairo_clip_intersect_clip_path (clip, clip_path->prev);
+
+    return _cairo_clip_intersect_path (clip,
+				       &clip_path->path,
+				       clip_path->fill_rule,
+				       clip_path->tolerance,
+				       clip_path->antialias);
+}
+
+cairo_clip_t *
+_cairo_clip_intersect_clip (cairo_clip_t *clip,
+			    const cairo_clip_t *other)
+{
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    if (other == NULL)
+	return clip;
+
+    if (clip == NULL)
+	return _cairo_clip_copy (other);
+
+    if (_cairo_clip_is_all_clipped (other))
+	return _cairo_clip_set_all_clipped (clip);
+
+    if (! _cairo_rectangle_intersect (&clip->extents, &other->extents))
+	return _cairo_clip_set_all_clipped (clip);
+
+    if (other->num_boxes) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_for_array (&boxes, other->boxes, other->num_boxes);
+	clip = _cairo_clip_intersect_boxes (clip, &boxes);
+    }
+
+    if (! _cairo_clip_is_all_clipped (clip)) {
+	if (other->path) {
+	    if (clip->path == NULL)
+		clip->path = _cairo_clip_path_reference (other->path);
+	    else
+		clip = _cairo_clip_intersect_clip_path (clip, other->path);
+	}
+    }
+
+    if (clip->region) {
+	cairo_region_destroy (clip->region);
+	clip->region = NULL;
+    }
+    clip->is_region = FALSE;
+
+    return clip;
+}
+
+cairo_bool_t
+_cairo_clip_equal (const cairo_clip_t *clip_a,
+		   const cairo_clip_t *clip_b)
+{
+    const cairo_clip_path_t *cp_a, *cp_b;
+
+    /* are both all-clipped or no-clip? */
+    if (clip_a == clip_b)
+	return TRUE;
+
+    /* or just one of them? */
+    if (clip_a == NULL || clip_b == NULL ||
+	_cairo_clip_is_all_clipped (clip_a) ||
+	_cairo_clip_is_all_clipped (clip_b))
+    {
+	return FALSE;
+    }
+
+    /* We have a pair of normal clips, check their contents */
+
+    if (clip_a->num_boxes != clip_b->num_boxes)
+	return FALSE;
+
+    if (memcmp (clip_a->boxes, clip_b->boxes,
+		sizeof (cairo_box_t) * clip_a->num_boxes))
+	return FALSE;
+
+    cp_a = clip_a->path;
+    cp_b = clip_b->path;
+    while (cp_a && cp_b) {
+	if (cp_a == cp_b)
+	    return TRUE;
+
+	/* XXX compare reduced polygons? */
+
+	if (cp_a->antialias != cp_b->antialias)
+	    return FALSE;
+
+	if (cp_a->tolerance != cp_b->tolerance)
+	    return FALSE;
+
+	if (cp_a->fill_rule != cp_b->fill_rule)
+	    return FALSE;
+
+	if (! _cairo_path_fixed_equal (&cp_a->path,
+				       &cp_b->path))
+	    return FALSE;
+
+	cp_a = cp_a->prev;
+	cp_b = cp_b->prev;
+    }
+
+    return cp_a == NULL && cp_b == NULL;
+}
+
+static cairo_clip_t *
+_cairo_clip_path_copy_with_translation (cairo_clip_t      *clip,
+					cairo_clip_path_t *other_path,
+					int fx, int fy)
+{
+    cairo_status_t status;
+    cairo_clip_path_t *clip_path;
+
+    if (other_path->prev != NULL)
+	clip = _cairo_clip_path_copy_with_translation (clip, other_path->prev,
+						       fx, fy);
+    if (_cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    clip_path = _cairo_clip_path_create (clip);
+    if (unlikely (clip_path == NULL))
+	return _cairo_clip_set_all_clipped (clip);
+
+    status = _cairo_path_fixed_init_copy (&clip_path->path,
+					  &other_path->path);
+    if (unlikely (status))
+	return _cairo_clip_set_all_clipped (clip);
+
+    _cairo_path_fixed_translate (&clip_path->path, fx, fy);
+
+    clip_path->fill_rule = other_path->fill_rule;
+    clip_path->tolerance = other_path->tolerance;
+    clip_path->antialias = other_path->antialias;
+
+    return clip;
+}
+
+cairo_clip_t *
+_cairo_clip_translate (cairo_clip_t *clip, int tx, int ty)
+{
+    int fx, fy, i;
+    cairo_clip_path_t *clip_path;
+
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    if (tx == 0 && ty == 0)
+	return clip;
+
+    fx = _cairo_fixed_from_int (tx);
+    fy = _cairo_fixed_from_int (ty);
+
+    for (i = 0; i < clip->num_boxes; i++) {
+	clip->boxes[i].p1.x += fx;
+	clip->boxes[i].p2.x += fx;
+	clip->boxes[i].p1.y += fy;
+	clip->boxes[i].p2.y += fy;
+    }
+
+    clip->extents.x += tx;
+    clip->extents.y += ty;
+
+    if (clip->path == NULL)
+	return clip;
+
+    clip_path = clip->path;
+    clip->path = NULL;
+    clip = _cairo_clip_path_copy_with_translation (clip, clip_path, fx, fy);
+    _cairo_clip_path_destroy (clip_path);
+
+    return clip;
+}
+
+static cairo_status_t
+_cairo_path_fixed_add_box (cairo_path_fixed_t *path,
+			   const cairo_box_t *box)
+{
+    cairo_status_t status;
+
+    status = _cairo_path_fixed_move_to (path, box->p1.x, box->p1.y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p2.x, box->p1.y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p2.x, box->p2.y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p1.x, box->p2.y);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_path_fixed_close_path (path);
+}
+
+static cairo_status_t
+_cairo_path_fixed_init_from_boxes (cairo_path_fixed_t *path,
+				   const cairo_boxes_t *boxes)
+{
+    cairo_status_t status;
+    const struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    _cairo_path_fixed_init (path);
+    if (boxes->num_boxes == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    status = _cairo_path_fixed_add_box (path, &chunk->base[i]);
+	    if (unlikely (status)) {
+		_cairo_path_fixed_fini (path);
+		return status;
+	    }
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_clip_t *
+_cairo_clip_intersect_clip_path_transformed (cairo_clip_t *clip,
+					     const cairo_clip_path_t *clip_path,
+					     const cairo_matrix_t *m)
+{
+    cairo_path_fixed_t path;
+
+    if (clip_path->prev)
+	clip = _cairo_clip_intersect_clip_path_transformed (clip,
+							    clip_path->prev,
+							    m);
+
+    if (_cairo_path_fixed_init_copy (&path, &clip_path->path))
+	return _cairo_clip_set_all_clipped (clip);
+
+    _cairo_path_fixed_transform (&path, m);
+
+    clip =  _cairo_clip_intersect_path (clip,
+				       &path,
+				       clip_path->fill_rule,
+				       clip_path->tolerance,
+				       clip_path->antialias);
+    _cairo_path_fixed_fini (&path);
+
+    return clip;
+}
+
+cairo_clip_t *
+_cairo_clip_transform (cairo_clip_t *clip, const cairo_matrix_t *m)
+{
+    cairo_clip_t *copy;
+
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return clip;
+
+    if (_cairo_matrix_is_translation (m))
+	return _cairo_clip_translate (clip, m->x0, m->y0);
+
+    copy = _cairo_clip_create ();
+
+    if (clip->num_boxes) {
+	cairo_path_fixed_t path;
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_for_array (&boxes, clip->boxes, clip->num_boxes);
+	_cairo_path_fixed_init_from_boxes (&path, &boxes);
+	_cairo_path_fixed_transform (&path, m);
+
+	copy = _cairo_clip_intersect_path (copy, &path,
+					   CAIRO_FILL_RULE_WINDING,
+					   0.1,
+					   CAIRO_ANTIALIAS_DEFAULT);
+
+	_cairo_path_fixed_fini (&path);
+    }
+
+    if (clip->path)
+	copy = _cairo_clip_intersect_clip_path_transformed (copy, clip->path,m);
+
+    _cairo_clip_destroy (clip);
+    return copy;
+}
+
+cairo_clip_t *
+_cairo_clip_copy_with_translation (const cairo_clip_t *clip, int tx, int ty)
+{
+    cairo_clip_t *copy;
+    int fx, fy, i;
+
+    if (clip == NULL || _cairo_clip_is_all_clipped (clip))
+	return (cairo_clip_t *)clip;
+
+    if (tx == 0 && ty == 0)
+	return _cairo_clip_copy (clip);
+
+    copy = _cairo_clip_create ();
+    if (copy == NULL)
+	    return _cairo_clip_set_all_clipped (copy);
+
+    fx = _cairo_fixed_from_int (tx);
+    fy = _cairo_fixed_from_int (ty);
+
+    if (clip->num_boxes) {
+	if (clip->num_boxes == 1) {
+	    copy->boxes = &copy->embedded_box;
+	} else {
+	    copy->boxes = _cairo_malloc_ab (clip->num_boxes, sizeof (cairo_box_t));
+	    if (unlikely (copy->boxes == NULL))
+		return _cairo_clip_set_all_clipped (copy);
+	}
+
+	for (i = 0; i < clip->num_boxes; i++) {
+	    copy->boxes[i].p1.x = clip->boxes[i].p1.x + fx;
+	    copy->boxes[i].p2.x = clip->boxes[i].p2.x + fx;
+	    copy->boxes[i].p1.y = clip->boxes[i].p1.y + fy;
+	    copy->boxes[i].p2.y = clip->boxes[i].p2.y + fy;
+	}
+	copy->num_boxes = clip->num_boxes;
+    }
+
+    copy->extents = clip->extents;
+    copy->extents.x += tx;
+    copy->extents.y += ty;
+
+    if (clip->path == NULL)
+	return copy;
+
+    return _cairo_clip_path_copy_with_translation (copy, clip->path, fx, fy);
+}
+
+cairo_bool_t
+_cairo_clip_contains_extents (const cairo_clip_t *clip,
+			      const cairo_composite_rectangles_t *extents)
+{
+    const cairo_rectangle_int_t *rect;
+
+    rect = extents->is_bounded ? &extents->bounded : &extents->unbounded;
+    return _cairo_clip_contains_rectangle (clip, rect);
+}
+
+void
+_cairo_debug_print_clip (FILE *stream, const cairo_clip_t *clip)
+{
+    int i;
+
+    if (clip == NULL) {
+	fprintf (stream, "no clip\n");
+	return;
+    }
+
+    if (_cairo_clip_is_all_clipped (clip)) {
+	fprintf (stream, "clip: all-clipped\n");
+	return;
+    }
+
+    fprintf (stream, "clip:\n");
+    fprintf (stream, "  extents: (%d, %d) x (%d, %d), is-region? %d",
+	     clip->extents.x, clip->extents.y,
+	     clip->extents.width, clip->extents.height,
+	     clip->is_region);
+
+    fprintf (stream, "  num_boxes = %d\n", clip->num_boxes);
+    for (i = 0; i < clip->num_boxes; i++) {
+	fprintf (stream, "  [%d] = (%f, %f), (%f, %f)\n", i,
+		 _cairo_fixed_to_double (clip->boxes[i].p1.x),
+		 _cairo_fixed_to_double (clip->boxes[i].p1.y),
+		 _cairo_fixed_to_double (clip->boxes[i].p2.x),
+		 _cairo_fixed_to_double (clip->boxes[i].p2.y));
+    }
+
+    if (clip->path) {
+	cairo_clip_path_t *clip_path = clip->path;
+	do {
+	    fprintf (stream, "path: aa=%d, tolerance=%f, rule=%d: ",
+		     clip_path->antialias,
+		     clip_path->tolerance,
+		     clip_path->fill_rule);
+	    _cairo_debug_print_path (stream, &clip_path->path);
+	    fprintf (stream, "\n");
+	} while ((clip_path = clip_path->prev) != NULL);
+    }
+}
+
+const cairo_rectangle_int_t *
+_cairo_clip_get_extents (const cairo_clip_t *clip)
+{
+    if (clip == NULL)
+	return &_cairo_unbounded_rectangle;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return &_cairo_empty_rectangle;
+
+    return &clip->extents;
+}
+
+const cairo_rectangle_list_t _cairo_rectangles_nil =
+  { CAIRO_STATUS_NO_MEMORY, NULL, 0 };
+static const cairo_rectangle_list_t _cairo_rectangles_not_representable =
+  { CAIRO_STATUS_CLIP_NOT_REPRESENTABLE, NULL, 0 };
+
+static cairo_bool_t
+_cairo_clip_int_rect_to_user (cairo_gstate_t *gstate,
+			      cairo_rectangle_int_t *clip_rect,
+			      cairo_rectangle_t *user_rect)
+{
+    cairo_bool_t is_tight;
+
+    double x1 = clip_rect->x;
+    double y1 = clip_rect->y;
+    double x2 = clip_rect->x + (int) clip_rect->width;
+    double y2 = clip_rect->y + (int) clip_rect->height;
+
+    _cairo_gstate_backend_to_user_rectangle (gstate,
+					     &x1, &y1, &x2, &y2,
+					     &is_tight);
+
+    user_rect->x = x1;
+    user_rect->y = y1;
+    user_rect->width  = x2 - x1;
+    user_rect->height = y2 - y1;
+
+    return is_tight;
+}
+
+cairo_rectangle_list_t *
+_cairo_rectangle_list_create_in_error (cairo_status_t status)
+{
+    cairo_rectangle_list_t *list;
+
+    if (status == CAIRO_STATUS_NO_MEMORY)
+	return (cairo_rectangle_list_t*) &_cairo_rectangles_nil;
+    if (status == CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)
+	return (cairo_rectangle_list_t*) &_cairo_rectangles_not_representable;
+
+    list = _cairo_malloc (sizeof (*list));
+    if (unlikely (list == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_rectangle_list_t*) &_cairo_rectangles_nil;
+    }
+
+    list->status = status;
+    list->rectangles = NULL;
+    list->num_rectangles = 0;
+
+    return list;
+}
+
+cairo_rectangle_list_t *
+_cairo_clip_copy_rectangle_list (cairo_clip_t *clip, cairo_gstate_t *gstate)
+{
+#define ERROR_LIST(S) _cairo_rectangle_list_create_in_error (_cairo_error (S))
+
+    cairo_rectangle_list_t *list;
+    cairo_rectangle_t *rectangles = NULL;
+    cairo_region_t *region = NULL;
+    int n_rects = 0;
+    int i;
+
+    if (clip == NULL)
+	return ERROR_LIST (CAIRO_STATUS_CLIP_NOT_REPRESENTABLE);
+
+    if (_cairo_clip_is_all_clipped (clip))
+	goto DONE;
+
+    if (! _cairo_clip_is_region (clip))
+	return ERROR_LIST (CAIRO_STATUS_CLIP_NOT_REPRESENTABLE);
+
+    region = _cairo_clip_get_region (clip);
+    if (region == NULL)
+	return ERROR_LIST (CAIRO_STATUS_NO_MEMORY);
+
+    n_rects = cairo_region_num_rectangles (region);
+    if (n_rects) {
+	rectangles = _cairo_malloc_ab (n_rects, sizeof (cairo_rectangle_t));
+	if (unlikely (rectangles == NULL)) {
+	    return ERROR_LIST (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	for (i = 0; i < n_rects; ++i) {
+	    cairo_rectangle_int_t clip_rect;
+
+	    cairo_region_get_rectangle (region, i, &clip_rect);
+
+	    if (! _cairo_clip_int_rect_to_user (gstate,
+						&clip_rect,
+						&rectangles[i]))
+	    {
+		free (rectangles);
+		return ERROR_LIST (CAIRO_STATUS_CLIP_NOT_REPRESENTABLE);
+	    }
+	}
+    }
+
+ DONE:
+    list = _cairo_malloc (sizeof (cairo_rectangle_list_t));
+    if (unlikely (list == NULL)) {
+        free (rectangles);
+	return ERROR_LIST (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    list->status = CAIRO_STATUS_SUCCESS;
+    list->rectangles = rectangles;
+    list->num_rectangles = n_rects;
+    return list;
+
+#undef ERROR_LIST
+}
+
+/**
+ * cairo_rectangle_list_destroy:
+ * @rectangle_list: a rectangle list, as obtained from cairo_copy_clip_rectangle_list()
+ *
+ * Unconditionally frees @rectangle_list and all associated
+ * references. After this call, the @rectangle_list pointer must not
+ * be dereferenced.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_rectangle_list_destroy (cairo_rectangle_list_t *rectangle_list)
+{
+    if (rectangle_list == NULL || rectangle_list == &_cairo_rectangles_nil ||
+        rectangle_list == &_cairo_rectangles_not_representable)
+        return;
+
+    free (rectangle_list->rectangles);
+    free (rectangle_list);
+}
+
+void
+_cairo_clip_reset_static_data (void)
+{
+    _freed_pool_reset (&clip_path_pool);
+    _freed_pool_reset (&clip_pool);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-context-private.h b/libs/cairo-1.16.0/src/cairo-cogl-context-private.h
new file mode 100644
index 0000000..0a7185e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-context-private.h
@@ -0,0 +1,52 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+#ifndef CAIRO_COGL_CONTEXT_PRIVATE_H
+#define CAIRO_COGL_CONTEXT_PRIVATE_H
+
+#include "cairo-default-context-private.h"
+#include "cairo-cogl-private.h"
+
+typedef struct _cairo_cogl_context {
+    cairo_default_context_t base;
+
+    cairo_cogl_device_t *dev;
+    int path_ctm_age;
+    cairo_path_fixed_t user_path;
+
+    cairo_bool_t path_is_rectangle;
+    double x, y, width, height;
+} cairo_cogl_context_t;
+
+cairo_t *
+_cairo_cogl_context_create (void *target);
+
+#endif /* CAIRO_COGL_CONTEXT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-context.c b/libs/cairo-1.16.0/src/cairo-cogl-context.c
new file mode 100644
index 0000000..c322780
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-context.c
@@ -0,0 +1,822 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+/* so long as we can verify that the ctm doesn't change multiple times
+ * during the construction of a path we can build a shadow
+ * #cairo_path_fixed_t in user coordinates that we can use to create a
+ * hash value for caching tessellations of that path.
+ *
+ * We need to hook into all the points where the ctm can be changed
+ * so we can bump a cr->path_ctm_age counter.
+ *
+ * We need to hook into all the points where the path can be modified
+ * so we can catch the start of a path and reset the cr->path_ctm_age
+ * counter at that point.
+ *
+ * When a draw operation is hit we can then check that the
+ * path_ctm_age == 0 and if so we create a hash of the path.
+ *
+ * We use this hash to lookup a #cairo_cogl_path_meta_t struct which
+ * may contain tessellated triangles for the path or may just contain
+ * a count of how many times the path has been re-seen (we only cache
+ * tessellated triangles if there is evidence that the path is being
+ * used multiple times because there is a cost involved in allocating
+ * a separate buffer for the triangles).
+ */
+
+#include "cairoint.h"
+
+#include "cairo-cogl-context-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-arc-private.h"
+#include "cairo-path-fixed-private.h"
+
+#include <glib.h>
+
+static freed_pool_t context_pool;
+
+void
+_cairo_cogl_context_reset_static_data (void)
+{
+    _freed_pool_reset (&context_pool);
+}
+
+static cairo_status_t
+_cairo_cogl_context_rectangle_real (cairo_cogl_context_t *cr,
+				    double x, double y,
+				    double width, double height)
+{
+    cairo_status_t status;
+    status = cr->dev->backend_parent.rectangle (cr, x, y, width, height);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_cogl_path_fixed_rectangle (&cr->user_path,
+					     _cairo_fixed_from_double (x),
+					     _cairo_fixed_from_double (y),
+					     _cairo_fixed_from_double (width),
+					     _cairo_fixed_from_double (height));
+}
+
+/* The idea here is that we have a simplified way of tracking rectangle paths
+ * because rectangles are perhaps the most common shape drawn with cairo.
+ *
+ * Basically we have a speculative store for a rectangle path that doesn't
+ * need to use the #cairo_path_fixed_t api to describe a rectangle in terms of
+ * (move_to,rel_line_to,rel_line_to,_rel_line_to,close) because if you profile
+ * heavy rectangle drawing with Cairo that process can be overly expensive.
+ *
+ * If the user asks to add more than just a rectangle to their current path
+ * then we "flush" any speculative rectangle stored into the current path
+ * before continuing to append their operations.
+ *
+ * In addition to the speculative store cairo-cogl also has a fast-path
+ * fill_rectangle drawing operation that further aims to minimize the cost
+ * of drawing rectangles.
+ */
+static cairo_status_t
+_flush_cr_rectangle (cairo_cogl_context_t *cr)
+{
+    if (!cr->path_is_rectangle)
+	return CAIRO_STATUS_SUCCESS;
+
+    cr->path_is_rectangle = FALSE;
+    return _cairo_cogl_context_rectangle_real (cr, cr->x, cr->y, cr->width, cr->height);
+}
+
+static cairo_status_t
+_cairo_cogl_context_restore (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.restore (abstract_cr);
+}
+
+static cairo_status_t
+_cairo_cogl_context_translate (void *abstract_cr, double tx, double ty)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.translate (abstract_cr, tx, ty);
+}
+
+static cairo_status_t
+_cairo_cogl_context_scale (void *abstract_cr, double sx, double sy)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.scale (abstract_cr, sx, sy);
+}
+
+static cairo_status_t
+_cairo_cogl_context_rotate (void *abstract_cr, double theta)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.rotate (abstract_cr, theta);
+}
+
+static cairo_status_t
+_cairo_cogl_context_transform (void *abstract_cr, const cairo_matrix_t *matrix)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.transform (abstract_cr, matrix);
+}
+
+static cairo_status_t
+_cairo_cogl_context_set_matrix (void *abstract_cr, const cairo_matrix_t *matrix)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.set_matrix (abstract_cr, matrix);
+}
+
+static cairo_status_t
+_cairo_cogl_context_set_identity_matrix (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cr->path_ctm_age++;
+    return cr->dev->backend_parent.set_identity_matrix (abstract_cr);
+}
+
+static cairo_status_t
+_cairo_cogl_context_new_path (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.new_path (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    _cairo_path_fixed_fini (&cr->user_path);
+    _cairo_path_fixed_init (&cr->user_path);
+    cr->path_is_rectangle = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_context_new_sub_path (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.new_sub_path (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    _cairo_path_fixed_new_sub_path (&cr->user_path);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_context_move_to (void *abstract_cr, double x, double y)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_fixed_t x_fixed, y_fixed;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.move_to (abstract_cr, x, y);
+    if (unlikely (status))
+	return status;
+
+    x_fixed = _cairo_fixed_from_double (x);
+    y_fixed = _cairo_fixed_from_double (y);
+
+    return _cairo_path_fixed_move_to (&cr->user_path, x_fixed, y_fixed);
+}
+
+static cairo_status_t
+_cairo_cogl_context_line_to (void *abstract_cr, double x, double y)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_fixed_t x_fixed, y_fixed;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.line_to (abstract_cr, x, y);
+    if (unlikely (status))
+	return status;
+
+    x_fixed = _cairo_fixed_from_double (x);
+    y_fixed = _cairo_fixed_from_double (y);
+
+    if (cr->user_path.buf.base.num_ops == 0)
+	cr->path_ctm_age = 0;
+
+    return _cairo_path_fixed_line_to (&cr->user_path, x_fixed, y_fixed);
+}
+
+static cairo_status_t
+_cairo_cogl_context_curve_to (void *abstract_cr,
+			       double x1, double y1,
+			       double x2, double y2,
+			       double x3, double y3)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_fixed_t x1_fixed, y1_fixed;
+    cairo_fixed_t x2_fixed, y2_fixed;
+    cairo_fixed_t x3_fixed, y3_fixed;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.curve_to (abstract_cr, x1, y1, x2, y2, x3, y3);
+    if (unlikely (status))
+	return status;
+
+    x1_fixed = _cairo_fixed_from_double (x1);
+    y1_fixed = _cairo_fixed_from_double (y1);
+
+    x2_fixed = _cairo_fixed_from_double (x2);
+    y2_fixed = _cairo_fixed_from_double (y2);
+
+    x3_fixed = _cairo_fixed_from_double (x3);
+    y3_fixed = _cairo_fixed_from_double (y3);
+
+    if (cr->user_path.buf.base.num_ops == 0)
+	cr->path_ctm_age = 0;
+
+    return _cairo_path_fixed_curve_to (&cr->user_path,
+				       x1_fixed, y1_fixed,
+				       x2_fixed, y2_fixed,
+				       x3_fixed, y3_fixed);
+}
+
+static cairo_status_t
+_cairo_cogl_context_arc (void *abstract_cr,
+			  double xc, double yc, double radius,
+			  double angle1, double angle2,
+			  cairo_bool_t forward)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.arc (abstract_cr, xc, yc, radius, angle1, angle2, forward);
+    if (unlikely (status))
+	return status;
+
+    if (cr->user_path.buf.base.num_ops == 0)
+	cr->path_ctm_age = 0;
+
+    /* Do nothing, successfully, if radius is <= 0 */
+    if (radius <= 0.0) {
+	cairo_fixed_t x_fixed, y_fixed;
+
+	x_fixed = _cairo_fixed_from_double (xc);
+	y_fixed = _cairo_fixed_from_double (yc);
+	status = _cairo_path_fixed_line_to (&cr->user_path, x_fixed, y_fixed);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_path_fixed_line_to (&cr->user_path, x_fixed, y_fixed);
+	if (unlikely (status))
+	    return status;
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = _cairo_cogl_context_line_to (cr,
+					  xc + radius * cos (angle1),
+					  yc + radius * sin (angle1));
+
+    if (unlikely (status))
+	return status;
+
+    if (forward)
+	_cairo_arc_path (&cr->base.base, xc, yc, radius, angle1, angle2);
+    else
+	_cairo_arc_path_negative (&cr->base.base, xc, yc, radius, angle1, angle2);
+
+    return CAIRO_STATUS_SUCCESS; /* any error will have already been set on cr */
+}
+
+static cairo_status_t
+_cairo_cogl_context_rel_move_to (void *abstract_cr, double dx, double dy)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_fixed_t dx_fixed, dy_fixed;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.rel_move_to (abstract_cr, dx, dy);
+    if (unlikely (status))
+	return status;
+
+    dx_fixed = _cairo_fixed_from_double (dx);
+    dy_fixed = _cairo_fixed_from_double (dy);
+
+    return _cairo_path_fixed_rel_move_to (&cr->user_path, dx_fixed, dy_fixed);
+}
+
+static cairo_status_t
+_cairo_cogl_context_rel_line_to (void *abstract_cr, double dx, double dy)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_fixed_t dx_fixed, dy_fixed;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.rel_line_to (abstract_cr, dx, dy);
+    if (unlikely (status))
+	return status;
+
+    dx_fixed = _cairo_fixed_from_double (dx);
+    dy_fixed = _cairo_fixed_from_double (dy);
+
+    if (cr->user_path.buf.base.num_ops == 0)
+	cr->path_ctm_age = 0;
+
+    return _cairo_path_fixed_rel_line_to (&cr->user_path, dx_fixed, dy_fixed);
+}
+
+
+static cairo_status_t
+_cairo_cogl_context_rel_curve_to (void *abstract_cr,
+				   double dx1, double dy1,
+				   double dx2, double dy2,
+				   double dx3, double dy3)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_fixed_t dx1_fixed, dy1_fixed;
+    cairo_fixed_t dx2_fixed, dy2_fixed;
+    cairo_fixed_t dx3_fixed, dy3_fixed;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.rel_curve_to (abstract_cr, dx1, dy1, dx2, dy2, dx3, dy3);
+    if (unlikely (status))
+	return status;
+
+    dx1_fixed = _cairo_fixed_from_double (dx1);
+    dy1_fixed = _cairo_fixed_from_double (dy1);
+
+    dx2_fixed = _cairo_fixed_from_double (dx2);
+    dy2_fixed = _cairo_fixed_from_double (dy2);
+
+    dx3_fixed = _cairo_fixed_from_double (dx3);
+    dy3_fixed = _cairo_fixed_from_double (dy3);
+
+    if (cr->user_path.buf.base.num_ops == 0)
+	cr->path_ctm_age = 0;
+
+    return _cairo_path_fixed_rel_curve_to (&cr->user_path,
+					   dx1_fixed, dy1_fixed,
+					   dx2_fixed, dy2_fixed,
+					   dx3_fixed, dy3_fixed);
+}
+
+#if 0
+static cairo_status_t
+_cairo_cogl_context_arc_to (void *abstract_cr,
+			    double x1, double y1,
+			    double x2, double y2,
+			    double radius)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.arc_to (abstract_cr, x1, y1, x2, y2, radius);
+    if (unlikely (status))
+	return status;
+#warning "FIXME"
+}
+
+static cairo_status_t
+_cairo_cogl_rel_arc_to (void *cr,
+			double dx1, double dy1,
+			double dx2, double dy2,
+			double radius)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.rel_arc_to (abstract_cr, dx1, dy2, dx2, dy2, radius);
+    if (unlikely (status))
+	return status;
+#warning "FIXME"
+}
+#endif
+
+static cairo_status_t
+_cairo_cogl_context_close_path (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    if (cr->path_is_rectangle) {
+	status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = cr->dev->backend_parent.close_path (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    if (cr->user_path.buf.base.num_ops == 0)
+	cr->path_ctm_age = 0;
+
+    return _cairo_path_fixed_close_path (&cr->user_path);
+}
+
+static cairo_status_t
+_cairo_cogl_context_rectangle (void *abstract_cr,
+			       double x, double y,
+			       double width, double height)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    if (cr->user_path.buf.base.num_ops == 0) {
+	cr->path_ctm_age = 0;
+
+#if 1
+	/* XXX: Since drawing rectangles is so common we have a
+	 * fast-path for drawing a single rectangle. */
+	cr->x = x;
+	cr->y = y;
+	cr->width = width;
+	cr->height = height;
+	cr->path_is_rectangle = TRUE;
+	return CAIRO_STATUS_SUCCESS;
+#endif
+    }
+
+    if (cr->path_is_rectangle) {
+	cairo_status_t status = _flush_cr_rectangle (cr);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_cogl_context_rectangle_real (cr, x, y, width, height);
+}
+
+/* Since the surface backend drawing operator functions don't get
+ * passed the current #cairo_t context we don't have a good way
+ * to get our user-coordinates path into our surface operator
+ * functions.
+ *
+ * For now we use this function to set side band data on the surface
+ * itself.
+ */
+static void
+_cairo_cogl_surface_set_side_band_state (cairo_cogl_surface_t *surface,
+					 cairo_cogl_context_t *cr)
+{
+
+    if (cr->path_ctm_age <= 1) {
+	surface->user_path = &cr->user_path;
+	surface->ctm = &cr->base.gstate->ctm;
+	surface->ctm_inverse = &cr->base.gstate->ctm_inverse;
+	surface->path_is_rectangle = cr->path_is_rectangle;
+	if (surface->path_is_rectangle) {
+	    surface->path_rectangle_x = cr->x;
+	    surface->path_rectangle_y = cr->y;
+	    surface->path_rectangle_width = cr->width;
+	    surface->path_rectangle_height = cr->height;
+	}
+    } else {
+	surface->user_path = NULL;
+	surface->path_is_rectangle = FALSE;
+    }
+}
+
+static cairo_status_t
+_cairo_cogl_context_fill (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)cr->base.gstate->target;
+
+    if (cr->path_is_rectangle) {
+	status = _cairo_cogl_surface_fill_rectangle (cr->base.gstate->target,
+						     cr->base.gstate->op,
+						     cr->base.gstate->source,
+						     cr->x,
+						     cr->y,
+						     cr->width,
+						     cr->height,
+						     &cr->base.gstate->ctm,
+						     cr->base.gstate->clip);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    goto DONE;
+	_flush_cr_rectangle (cr);
+    }
+
+    _cairo_cogl_surface_set_side_band_state (surface, cr);
+
+    status = cr->dev->backend_parent.fill (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+DONE:
+    _cairo_path_fixed_fini (&cr->user_path);
+    _cairo_path_fixed_init (&cr->user_path);
+    cr->path_is_rectangle = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_context_fill_preserve (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)cr->base.gstate->target;
+
+    _cairo_cogl_surface_set_side_band_state (surface, cr);
+
+    status = cr->dev->backend_parent.fill_preserve (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_context_stroke (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)cr->base.gstate->target;
+
+    _cairo_cogl_surface_set_side_band_state (surface, cr);
+
+    status = cr->dev->backend_parent.stroke (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    _cairo_path_fixed_fini (&cr->user_path);
+    _cairo_path_fixed_init (&cr->user_path);
+    cr->path_is_rectangle = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_context_stroke_preserve (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)cr->base.gstate->target;
+
+    _cairo_cogl_surface_set_side_band_state (surface, cr);
+
+    status = cr->dev->backend_parent.stroke_preserve (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_context_clip (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    status = cr->dev->backend_parent.clip (abstract_cr);
+    if (unlikely (status))
+	return status;
+
+    _cairo_path_fixed_fini (&cr->user_path);
+    _cairo_path_fixed_init (&cr->user_path);
+    cr->path_is_rectangle = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_cogl_context_destroy (void *abstract_cr)
+{
+    cairo_cogl_context_t *cr = abstract_cr;
+
+    _cairo_default_context_fini (&cr->base);
+
+    _cairo_path_fixed_fini (&cr->user_path);
+
+    /* mark the context as invalid to protect against misuse */
+    cr->base.base.status = CAIRO_STATUS_NULL_POINTER;
+    _freed_pool_put (&context_pool, cr);
+}
+
+/* We want to hook into the frontend of the path construction APIs so
+ * we can build up a path description in user coordinates instead of
+ * backend coordinates so that we can recognize user coordinate
+ * rectangles and so we can hash a user path independent of its
+ * transform. (With some care to catch unusual cases where the ctm
+ * changes mid-path) */
+cairo_t *
+_cairo_cogl_context_create (void *target)
+{
+    cairo_cogl_surface_t *surface = target;
+    cairo_cogl_context_t *cr;
+    cairo_status_t status;
+
+    cr = _freed_pool_get (&context_pool);
+    if (unlikely (cr == NULL)) {
+	cr = _cairo_malloc (sizeof (cairo_cogl_context_t));
+	if (unlikely (cr == NULL))
+	    return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    status = _cairo_default_context_init (&cr->base, target);
+    if (unlikely (status)) {
+	_freed_pool_put (&context_pool, cr);
+	return _cairo_create_in_error (status);
+    }
+
+    cr->dev = (cairo_cogl_device_t *)surface->base.device;
+
+    if (unlikely (cr->dev->backend_vtable_initialized == FALSE)) {
+	cairo_backend_t *backend = &cr->dev->backend;
+	memcpy (backend, cr->base.base.backend, sizeof (cairo_backend_t));
+	memcpy (&cr->dev->backend_parent, cr->base.base.backend, sizeof (cairo_backend_t));
+
+	backend->destroy = _cairo_cogl_context_destroy;
+
+	backend->restore = _cairo_cogl_context_restore;
+	backend->translate = _cairo_cogl_context_translate;
+	backend->scale = _cairo_cogl_context_scale;
+	backend->rotate = _cairo_cogl_context_rotate;
+	backend->transform = _cairo_cogl_context_transform;
+	backend->set_matrix = _cairo_cogl_context_set_matrix;
+	backend->set_identity_matrix = _cairo_cogl_context_set_identity_matrix;
+
+	backend->new_path = _cairo_cogl_context_new_path;
+	backend->new_sub_path = _cairo_cogl_context_new_sub_path;
+	backend->move_to = _cairo_cogl_context_move_to;
+	backend->rel_move_to = _cairo_cogl_context_rel_move_to;
+	backend->line_to = _cairo_cogl_context_line_to;
+	backend->rel_line_to = _cairo_cogl_context_rel_line_to;
+	backend->curve_to = _cairo_cogl_context_curve_to;
+	backend->rel_curve_to = _cairo_cogl_context_rel_curve_to;
+#if 0
+	backend->arc_to = _cairo_cogl_context_arc_to;
+	backend->rel_arc_to = _cairo_cogl_context_rel_arc_to;
+#endif
+	backend->close_path = _cairo_cogl_context_close_path;
+	//backend->arc = _cairo_cogl_context_arc;
+	backend->rectangle = _cairo_cogl_context_rectangle;
+
+	/* Try to automatically catch if any new path APIs are added that mean
+	 * we may need to overload more functions... */
+	assert (((char *)&backend->path_extents - (char *)&backend->device_to_user_distance)
+		== (sizeof (void *) * 14));
+
+	backend->fill = _cairo_cogl_context_fill;
+	backend->fill_preserve = _cairo_cogl_context_fill_preserve;
+	backend->stroke = _cairo_cogl_context_stroke;
+	backend->stroke_preserve = _cairo_cogl_context_stroke_preserve;
+	backend->clip = _cairo_cogl_context_clip;
+
+	cr->dev->backend_vtable_initialized = TRUE;
+    }
+
+    cr->base.base.backend = &cr->dev->backend;
+
+    _cairo_path_fixed_init (&cr->user_path);
+    cr->path_is_rectangle = FALSE;
+
+    return &cr->base.base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-gradient-private.h b/libs/cairo-1.16.0/src/cairo-cogl-gradient-private.h
new file mode 100644
index 0000000..fa684d2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-gradient-private.h
@@ -0,0 +1,89 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+#ifndef CAIRO_COGL_GRADIENT_PRIVATE_H
+#define CAIRO_COGL_GRADIENT_PRIVATE_H
+
+#include "cairoint.h"
+#include "cairo-pattern-private.h"
+
+#include <cogl/cogl2-experimental.h>
+
+#define CAIRO_COGL_LINEAR_GRADIENT_CACHE_SIZE (1024 * 1024)
+
+typedef enum _cairo_cogl_gradient_compatibility {
+    CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD	    = 1<<0,
+    CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT   = 1<<1,
+    CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT  = 1<<2,
+    CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE	    = 1<<3
+} cairo_cogl_gradient_compatibility_t;
+#define CAIRO_COGL_GRADIENT_CAN_EXTEND_ALL (CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD |\
+					    CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT|\
+					    CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT|\
+					    CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE)
+
+typedef struct _cairo_cogl_linear_texture_entry {
+    cairo_cogl_gradient_compatibility_t compatibility;
+    CoglTexture	*texture;
+    float translate_x;
+    float scale_x;
+} cairo_cogl_linear_texture_entry_t;
+
+typedef struct _cairo_cogl_linear_gradient {
+    cairo_cache_entry_t		 cache_entry;
+    cairo_reference_count_t	 ref_count;
+    GList			*textures;
+    int				 n_stops;
+    const cairo_gradient_stop_t	*stops;
+    cairo_gradient_stop_t	 stops_embedded[1];
+} cairo_cogl_linear_gradient_t;
+
+cairo_int_status_t
+_cairo_cogl_get_linear_gradient (cairo_cogl_device_t *context,
+				 cairo_extend_t extend_mode,
+				 int n_stops,
+				 const cairo_gradient_stop_t *stops,
+				 cairo_cogl_linear_gradient_t **gradient_out);
+
+cairo_cogl_linear_texture_entry_t *
+_cairo_cogl_linear_gradient_texture_for_extend (cairo_cogl_linear_gradient_t *gradient,
+						cairo_extend_t extend_mode);
+
+cairo_cogl_linear_gradient_t *
+_cairo_cogl_linear_gradient_reference (cairo_cogl_linear_gradient_t *gradient);
+
+void
+_cairo_cogl_linear_gradient_destroy (cairo_cogl_linear_gradient_t *gradient);
+
+cairo_bool_t
+_cairo_cogl_linear_gradient_equal (const void *key_a, const void *key_b);
+
+#endif /* CAIRO_COGL_GRADIENT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-gradient.c b/libs/cairo-1.16.0/src/cairo-cogl-gradient.c
new file mode 100644
index 0000000..0923e3b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-gradient.c
@@ -0,0 +1,642 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+//#include "cairoint.h"
+
+#include "cairo-cogl-private.h"
+#include "cairo-cogl-gradient-private.h"
+#include "cairo-image-surface-private.h"
+
+#include <cogl/cogl2-experimental.h>
+#include <glib.h>
+
+#define DUMP_GRADIENTS_TO_PNG
+
+static unsigned long
+_cairo_cogl_linear_gradient_hash (unsigned int                  n_stops,
+				  const cairo_gradient_stop_t  *stops)
+{
+    return _cairo_hash_bytes (n_stops, stops,
+                              sizeof (cairo_gradient_stop_t) * n_stops);
+}
+
+static cairo_cogl_linear_gradient_t *
+_cairo_cogl_linear_gradient_lookup (cairo_cogl_device_t         *ctx,
+				    unsigned long                 hash,
+				    unsigned int                  n_stops,
+				    const cairo_gradient_stop_t  *stops)
+{
+    cairo_cogl_linear_gradient_t lookup;
+
+    lookup.cache_entry.hash = hash,
+    lookup.n_stops = n_stops;
+    lookup.stops = stops;
+
+    return _cairo_cache_lookup (&ctx->linear_cache, &lookup.cache_entry);
+}
+
+cairo_bool_t
+_cairo_cogl_linear_gradient_equal (const void *key_a, const void *key_b)
+{
+    const cairo_cogl_linear_gradient_t *a = key_a;
+    const cairo_cogl_linear_gradient_t *b = key_b;
+
+    if (a->n_stops != b->n_stops)
+        return FALSE;
+
+    return memcmp (a->stops, b->stops, a->n_stops * sizeof (cairo_gradient_stop_t)) == 0;
+}
+
+cairo_cogl_linear_gradient_t *
+_cairo_cogl_linear_gradient_reference (cairo_cogl_linear_gradient_t *gradient)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&gradient->ref_count));
+
+    _cairo_reference_count_inc (&gradient->ref_count);
+
+    return gradient;
+}
+
+void
+_cairo_cogl_linear_gradient_destroy (cairo_cogl_linear_gradient_t *gradient)
+{
+    GList *l;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&gradient->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&gradient->ref_count))
+	return;
+
+    for (l = gradient->textures; l; l = l->next) {
+	cairo_cogl_linear_texture_entry_t *entry = l->data;
+	cogl_object_unref (entry->texture);
+	free (entry);
+    }
+    g_list_free (gradient->textures);
+
+    free (gradient);
+}
+
+static int
+_cairo_cogl_util_next_p2 (int a)
+{
+  int rval = 1;
+
+  while (rval < a)
+    rval <<= 1;
+
+  return rval;
+}
+
+static float
+get_max_color_component_range (const cairo_color_stop_t *color0, const cairo_color_stop_t *color1)
+{
+    float range;
+    float max = 0;
+
+    range = fabs (color0->red - color1->red);
+    max = MAX (range, max);
+    range = fabs (color0->green - color1->green);
+    max = MAX (range, max);
+    range = fabs (color0->blue - color1->blue);
+    max = MAX (range, max);
+    range = fabs (color0->alpha - color1->alpha);
+    max = MAX (range, max);
+
+    return max;
+}
+
+static int
+_cairo_cogl_linear_gradient_width_for_stops (cairo_extend_t		  extend,
+					     unsigned int                 n_stops,
+					     const cairo_gradient_stop_t *stops)
+{
+    unsigned int n;
+    float max_texels_per_unit_offset = 0;
+    float total_offset_range;
+
+    /* Find the stop pair demanding the most precision because we are
+     * interpolating the largest color-component range.
+     *
+     * From that we can define the relative sizes of all the other
+     * stop pairs within our texture and thus the overall size.
+     *
+     * To determine the maximum number of texels for a given gap we
+     * look at the range of colors we are expected to interpolate (so
+     * long as the stop offsets are not degenerate) and we simply
+     * assume we want one texel for each unique color value possible
+     * for a one byte-per-component representation.
+     * XXX: maybe this is overkill and just allowing 128 levels
+     * instead of 256 would be enough and then we'd rely on the
+     * bilinear filtering to give the full range.
+     *
+     * XXX: potentially we could try and map offsets to pixels to come
+     * up with a more precise mapping, but we are aiming to cache
+     * the gradients so we can't make assumptions about how it will be
+     * scaled in the future.
+     */
+    for (n = 1; n < n_stops; n++) {
+	float color_range;
+	float offset_range;
+	float texels;
+	float texels_per_unit_offset;
+
+	/* note: degenerate stops don't need to be represented in the
+	 * texture but we want to be sure that solid gaps get at least
+	 * one texel and all other gaps get at least 2 texels.
+	 */
+
+	if (stops[n].offset == stops[n-1].offset)
+	    continue;
+
+	color_range = get_max_color_component_range (&stops[n].color, &stops[n-1].color);
+	if (color_range == 0)
+	    texels = 1;
+	else
+	    texels = MAX (2, 256.0f * color_range);
+
+	/* So how many texels would we need to map over the full [0,1]
+	 * gradient range so this gap would have enough texels? ... */
+	offset_range = stops[n].offset - stops[n - 1].offset;
+	texels_per_unit_offset = texels / offset_range;
+
+	if (texels_per_unit_offset > max_texels_per_unit_offset)
+	    max_texels_per_unit_offset = texels_per_unit_offset;
+    }
+
+    total_offset_range = fabs (stops[n_stops - 1].offset - stops[0].offset);
+    return max_texels_per_unit_offset * total_offset_range;
+}
+
+/* Aim to create gradient textures without an alpha component so we can avoid
+ * needing to use blending... */
+static CoglPixelFormat
+_cairo_cogl_linear_gradient_format_for_stops (cairo_extend_t		   extend,
+					      unsigned int                 n_stops,
+					      const cairo_gradient_stop_t *stops)
+{
+    unsigned int n;
+
+    /* We have to add extra transparent texels to the end of the gradient to
+     * handle CAIRO_EXTEND_NONE... */
+    if (extend == CAIRO_EXTEND_NONE)
+	return COGL_PIXEL_FORMAT_BGRA_8888_PRE;
+
+    for (n = 1; n < n_stops; n++) {
+	if (stops[n].color.alpha != 1.0)
+	    return COGL_PIXEL_FORMAT_BGRA_8888_PRE;
+    }
+
+    return COGL_PIXEL_FORMAT_BGR_888;
+}
+
+static cairo_cogl_gradient_compatibility_t
+_cairo_cogl_compatibility_from_extend_mode (cairo_extend_t extend_mode)
+{
+    switch (extend_mode)
+    {
+    case CAIRO_EXTEND_NONE:
+	return CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE;
+    case CAIRO_EXTEND_PAD:
+	return CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD;
+    case CAIRO_EXTEND_REPEAT:
+	return CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT;
+    case CAIRO_EXTEND_REFLECT:
+	return CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT;
+    }
+
+    assert (0); /* not reached */
+    return CAIRO_EXTEND_NONE;
+}
+
+cairo_cogl_linear_texture_entry_t *
+_cairo_cogl_linear_gradient_texture_for_extend (cairo_cogl_linear_gradient_t *gradient,
+						cairo_extend_t extend_mode)
+{
+    GList *l;
+    cairo_cogl_gradient_compatibility_t compatibility =
+	_cairo_cogl_compatibility_from_extend_mode (extend_mode);
+    for (l = gradient->textures; l; l = l->next) {
+	cairo_cogl_linear_texture_entry_t *entry = l->data;
+	if (entry->compatibility & compatibility)
+	    return entry;
+    }
+    return NULL;
+}
+
+static void
+color_stop_lerp (const cairo_color_stop_t *c0,
+		 const cairo_color_stop_t *c1,
+		 float factor,
+		 cairo_color_stop_t *dest)
+{
+    /* NB: we always ignore the short members in this file so we don't need to
+     * worry about initializing them here. */
+    dest->red = c0->red * (1.0f-factor) + c1->red * factor;
+    dest->green = c0->green * (1.0f-factor) + c1->green * factor;
+    dest->blue = c0->blue * (1.0f-factor) + c1->blue * factor;
+    dest->alpha = c0->alpha * (1.0f-factor) + c1->alpha * factor;
+}
+
+static size_t
+_cairo_cogl_linear_gradient_size (cairo_cogl_linear_gradient_t *gradient)
+{
+    GList *l;
+    size_t size = 0;
+    for (l = gradient->textures; l; l = l->next) {
+	cairo_cogl_linear_texture_entry_t *entry = l->data;
+	size += cogl_texture_get_width (entry->texture) * 4;
+    }
+    return size;
+}
+
+static void
+emit_stop (CoglVertexP2C4 **position,
+	   float left,
+	   float right,
+	   const cairo_color_stop_t *left_color,
+	   const cairo_color_stop_t *right_color)
+{
+    CoglVertexP2C4 *p = *position;
+
+    guint8 lr = left_color->red * 255;
+    guint8 lg = left_color->green * 255;
+    guint8 lb = left_color->blue * 255;
+    guint8 la = left_color->alpha * 255;
+
+    guint8 rr = right_color->red * 255;
+    guint8 rg = right_color->green * 255;
+    guint8 rb = right_color->blue * 255;
+    guint8 ra = right_color->alpha * 255;
+
+    p[0].x = left;
+    p[0].y = 0;
+    p[0].r = lr; p[0].g = lg; p[0].b = lb; p[0].a = la;
+    p[1].x = left;
+    p[1].y = 1;
+    p[1].r = lr; p[1].g = lg; p[1].b = lb; p[1].a = la;
+    p[2].x = right;
+    p[2].y = 1;
+    p[2].r = rr; p[2].g = rg; p[2].b = rb; p[2].a = ra;
+
+    p[3].x = left;
+    p[3].y = 0;
+    p[3].r = lr; p[3].g = lg; p[3].b = lb; p[3].a = la;
+    p[4].x = right;
+    p[4].y = 1;
+    p[4].r = rr; p[4].g = rg; p[4].b = rb; p[4].a = ra;
+    p[5].x = right;
+    p[5].y = 0;
+    p[5].r = rr; p[5].g = rg; p[5].b = rb; p[5].a = ra;
+
+    *position = &p[6];
+}
+
+#ifdef DUMP_GRADIENTS_TO_PNG
+static void
+dump_gradient_to_png (CoglTexture *texture)
+{
+    cairo_image_surface_t *image = (cairo_image_surface_t *)
+	cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+				    cogl_texture_get_width (texture),
+				    cogl_texture_get_height (texture));
+    CoglPixelFormat format;
+    static int gradient_id = 0;
+    char *gradient_name;
+
+    if (image->base.status)
+	return;
+
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+    format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
+#else
+    format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
+#endif
+    cogl_texture_get_data (texture,
+			   format,
+			   0,
+			   image->data);
+    gradient_name = g_strdup_printf ("./gradient%d.png", gradient_id++);
+    g_print ("writing gradient: %s\n", gradient_name);
+    cairo_surface_write_to_png ((cairo_surface_t *)image, gradient_name);
+    g_free (gradient_name);
+}
+#endif
+
+cairo_int_status_t
+_cairo_cogl_get_linear_gradient (cairo_cogl_device_t *device,
+				 cairo_extend_t extend_mode,
+				 int n_stops,
+				 const cairo_gradient_stop_t *stops,
+				 cairo_cogl_linear_gradient_t **gradient_out)
+{
+    unsigned long hash;
+    cairo_cogl_linear_gradient_t *gradient;
+    cairo_cogl_linear_texture_entry_t *entry;
+    cairo_gradient_stop_t *internal_stops;
+    int stop_offset;
+    int n_internal_stops;
+    int n;
+    cairo_cogl_gradient_compatibility_t compatibilities;
+    int width;
+    int left_padding = 0;
+    cairo_color_stop_t left_padding_color;
+    int right_padding = 0;
+    cairo_color_stop_t right_padding_color;
+    CoglPixelFormat format;
+    CoglTexture2D *tex;
+    GError *error = NULL;
+    int un_padded_width;
+    CoglHandle offscreen;
+    cairo_int_status_t status;
+    int n_quads;
+    int n_vertices;
+    float prev;
+    float right;
+    CoglVertexP2C4 *vertices;
+    CoglVertexP2C4 *p;
+    CoglPrimitive *prim;
+
+    hash = _cairo_cogl_linear_gradient_hash (n_stops, stops);
+
+    gradient = _cairo_cogl_linear_gradient_lookup (device, hash, n_stops, stops);
+    if (gradient) {
+	cairo_cogl_linear_texture_entry_t *entry =
+	    _cairo_cogl_linear_gradient_texture_for_extend (gradient, extend_mode);
+	if (entry) {
+	    *gradient_out = _cairo_cogl_linear_gradient_reference (gradient);
+	    return CAIRO_INT_STATUS_SUCCESS;
+	}
+    }
+
+    if (!gradient) {
+	gradient = _cairo_malloc (sizeof (cairo_cogl_linear_gradient_t) +
+			   sizeof (cairo_gradient_stop_t) * (n_stops - 1));
+	if (!gradient)
+	    return CAIRO_INT_STATUS_NO_MEMORY;
+
+	CAIRO_REFERENCE_COUNT_INIT (&gradient->ref_count, 1);
+	/* NB: we update the cache_entry size at the end before
+	 * [re]adding it to the cache. */
+	gradient->cache_entry.hash = hash;
+	gradient->textures = NULL;
+	gradient->n_stops = n_stops;
+	gradient->stops = gradient->stops_embedded;
+	memcpy (gradient->stops_embedded, stops, sizeof (cairo_gradient_stop_t) * n_stops);
+    } else
+	_cairo_cogl_linear_gradient_reference (gradient);
+
+    entry = _cairo_malloc (sizeof (cairo_cogl_linear_texture_entry_t));
+    if (!entry) {
+	status = CAIRO_INT_STATUS_NO_MEMORY;
+	goto BAIL;
+    }
+
+    compatibilities = _cairo_cogl_compatibility_from_extend_mode (extend_mode);
+
+    n_internal_stops = n_stops;
+    stop_offset = 0;
+
+    /* We really need stops covering the full [0,1] range for repeat/reflect
+     * if we want to use sampler REPEAT/MIRROR wrap modes so we may need
+     * to add some extra stops... */
+    if (extend_mode == CAIRO_EXTEND_REPEAT || extend_mode == CAIRO_EXTEND_REFLECT)
+    {
+	/* If we don't need any extra stops then actually the texture
+	 * will be shareable for repeat and reflect... */
+	compatibilities = (CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT |
+			   CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT);
+
+	if (stops[0].offset != 0) {
+	    n_internal_stops++;
+	    stop_offset++;
+	}
+
+	if (stops[n_stops - 1].offset != 1)
+	    n_internal_stops++;
+    }
+
+    internal_stops = alloca (n_internal_stops * sizeof (cairo_gradient_stop_t));
+    memcpy (&internal_stops[stop_offset], stops, sizeof (cairo_gradient_stop_t) * n_stops);
+
+    /* cairo_color_stop_t values are all unpremultiplied but we need to
+     * interpolate premultiplied colors so we premultiply all the double
+     * components now. (skipping any extra stops added for repeat/reflect)
+     *
+     * Anothing thing to note is that by premultiplying the colors
+     * early we'll also reduce the range of colors to interpolate
+     * which can result in smaller gradient textures.
+     */
+    for (n = stop_offset; n < n_stops; n++) {
+	cairo_color_stop_t *color = &internal_stops[n].color;
+	color->red *= color->alpha;
+	color->green *= color->alpha;
+	color->blue *= color->alpha;
+    }
+
+    if (n_internal_stops != n_stops)
+    {
+	if (extend_mode == CAIRO_EXTEND_REPEAT) {
+	    compatibilities &= ~CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT;
+	    if (stops[0].offset != 0) {
+		/* what's the wrap-around distance between the user's end-stops? */
+		double dx = (1.0 - stops[n_stops - 1].offset) + stops[0].offset;
+		internal_stops[0].offset = 0;
+		color_stop_lerp (&stops[0].color,
+				 &stops[n_stops - 1].color,
+				 stops[0].offset / dx,
+				 &internal_stops[0].color);
+	    }
+	    if (stops[n_stops - 1].offset != 1) {
+		internal_stops[n_internal_stops - 1].offset = 1;
+		internal_stops[n_internal_stops - 1].color = internal_stops[0].color;
+	    }
+	} else if (extend_mode == CAIRO_EXTEND_REFLECT) {
+	    compatibilities &= ~CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT;
+	    if (stops[0].offset != 0) {
+		internal_stops[0].offset = 0;
+		internal_stops[0].color = stops[n_stops - 1].color;
+	    }
+	    if (stops[n_stops - 1].offset != 1) {
+		internal_stops[n_internal_stops - 1].offset = 1;
+		internal_stops[n_internal_stops - 1].color = stops[0].color;
+	    }
+	}
+    }
+
+    stops = internal_stops;
+    n_stops = n_internal_stops;
+
+    width = _cairo_cogl_linear_gradient_width_for_stops (extend_mode, n_stops, stops);
+
+    if (extend_mode == CAIRO_EXTEND_PAD) {
+
+	/* Here we need to guarantee that the edge texels of our
+	 * texture correspond to the desired padding color so we
+	 * can use CLAMP_TO_EDGE.
+	 *
+	 * For short stop-gaps and especially for degenerate stops
+	 * it's possible that without special consideration the
+	 * user's end stop colors would not be present in our final
+	 * texture.
+	 *
+	 * To handle this we forcibly add two extra padding texels
+	 * at the edges which extend beyond the [0,1] range of the
+	 * gradient itself and we will later report a translate and
+	 * scale transform to compensate for this.
+	 */
+
+	/* XXX: If we consider generating a mipmap for our 1d texture
+	 * at some point then we also need to consider how much
+	 * padding to add to be sure lower mipmap levels still have
+	 * the desired edge color (as opposed to a linear blend with
+	 * other colors of the gradient).
+	 */
+
+	left_padding = 1;
+	left_padding_color = stops[0].color;
+	right_padding = 1;
+	right_padding_color = stops[n_stops - 1].color;
+    } else if (extend_mode == CAIRO_EXTEND_NONE) {
+	/* We handle EXTEND_NONE by adding two extra, transparent, texels at
+	 * the ends of the texture and use CLAMP_TO_EDGE.
+	 *
+	 * We add a scale and translate transform so to account for our texels
+	 * extending beyond the [0,1] range. */
+
+	left_padding = 1;
+	left_padding_color.red = 0;
+	left_padding_color.green = 0;
+	left_padding_color.blue = 0;
+	left_padding_color.alpha = 0;
+	right_padding = 1;
+	right_padding_color = left_padding_color;
+    }
+
+    /* If we still have stops that don't cover the full [0,1] range
+     * then we need to define a texture-coordinate scale + translate
+     * transform to account for that... */
+    if (stops[n_stops - 1].offset - stops[0].offset < 1) {
+	float range = stops[n_stops - 1].offset - stops[0].offset;
+	entry->scale_x = 1.0 / range;
+	entry->translate_x = -(stops[0].offset * entry->scale_x);
+    }
+
+    width += left_padding + right_padding;
+
+    width = _cairo_cogl_util_next_p2 (width);
+    width = MIN (4096, width); /* lets not go too stupidly big! */
+    format = _cairo_cogl_linear_gradient_format_for_stops (extend_mode, n_stops, stops);
+
+    do {
+	tex = cogl_texture_2d_new_with_size (device->cogl_context,
+					     width,
+					     1,
+					     format,
+					     &error);
+	if (!tex)
+	    g_error_free (error);
+    } while (tex == NULL && width >> 1);
+
+    if (!tex) {
+	status = CAIRO_INT_STATUS_NO_MEMORY;
+	goto BAIL;
+    }
+
+    entry->texture = COGL_TEXTURE (tex);
+    entry->compatibility = compatibilities;
+
+    un_padded_width = width - left_padding - right_padding;
+
+    /* XXX: only when we know the final texture width can we calculate the
+     * scale and translate factors needed to account for padding... */
+    if (un_padded_width != width)
+	entry->scale_x *= (float)un_padded_width / (float)width;
+    if (left_padding)
+	entry->translate_x += (entry->scale_x / (float)un_padded_width) * (float)left_padding;
+
+    offscreen = cogl_offscreen_new_to_texture (tex);
+    cogl_push_framebuffer (COGL_FRAMEBUFFER (offscreen));
+    cogl_ortho (0, width, 1, 0, -1, 100);
+    cogl_framebuffer_clear4f (COGL_FRAMEBUFFER (offscreen),
+			      COGL_BUFFER_BIT_COLOR,
+			      0, 0, 0, 0);
+
+    n_quads = n_stops - 1 + !!left_padding + !!right_padding;
+    n_vertices = 6 * n_quads;
+    vertices = alloca (sizeof (CoglVertexP2C4) * n_vertices);
+    p = vertices;
+    if (left_padding)
+	emit_stop (&p, 0, left_padding, &left_padding_color, &left_padding_color);
+    prev = (float)left_padding;
+    for (n = 1; n < n_stops; n++) {
+	right = (float)left_padding + (float)un_padded_width * stops[n].offset;
+	emit_stop (&p, prev, right, &stops[n-1].color, &stops[n].color);
+	prev = right;
+    }
+    if (right_padding)
+	emit_stop (&p, prev, width, &right_padding_color, &right_padding_color);
+
+    prim = cogl_primitive_new_p2c4 (COGL_VERTICES_MODE_TRIANGLES,
+				    n_vertices,
+				    vertices);
+    /* Just use this as the simplest way to setup a default pipeline... */
+    cogl_set_source_color4f (0, 0, 0, 0);
+    cogl_primitive_draw (prim);
+    cogl_object_unref (prim);
+
+    cogl_pop_framebuffer ();
+    cogl_object_unref (offscreen);
+
+    gradient->textures = g_list_prepend (gradient->textures, entry);
+    gradient->cache_entry.size = _cairo_cogl_linear_gradient_size (gradient);
+
+#ifdef DUMP_GRADIENTS_TO_PNG
+    dump_gradient_to_png (COGL_TEXTURE (tex));
+#endif
+
+#warning "FIXME:"
+    /* XXX: it seems the documentation of _cairo_cache_insert isn't true - it
+     * doesn't handle re-adding the same entry gracefully - the cache will
+     * just keep on growing and then it will start randomly evicting things
+     * pointlessly */
+    /* we ignore errors here and just return an uncached gradient */
+    if (likely (! _cairo_cache_insert (&device->linear_cache, &gradient->cache_entry)))
+        _cairo_cogl_linear_gradient_reference (gradient);
+
+    *gradient_out = gradient;
+    return CAIRO_INT_STATUS_SUCCESS;
+
+BAIL:
+    free (entry);
+    if (gradient)
+	_cairo_cogl_linear_gradient_destroy (gradient);
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-private.h b/libs/cairo-1.16.0/src/cairo-cogl-private.h
new file mode 100644
index 0000000..13fe5a8
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-private.h
@@ -0,0 +1,164 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+#ifndef CAIRO_COGL_PRIVATE_H
+#define CAIRO_COGL_PRIVATE_H
+
+#include "cairo-device-private.h"
+#include "cairo-cache-private.h"
+#include "cairo-backend-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-surface-private.h"
+
+#include <cogl/cogl2-experimental.h>
+
+typedef enum _cairo_cogl_template_type {
+    CAIRO_COGL_TEMPLATE_TYPE_SOLID,
+    CAIRO_COGL_TEMPLATE_TYPE_TEXTURE,
+    CAIRO_COGL_TEMPLATE_TYPE_MASK_SOLID,
+    CAIRO_COGL_TEMPLATE_TYPE_MASK_TEXTURE,
+    CAIRO_COGL_TEMPLATE_TYPE_COUNT
+} cairo_cogl_template_type;
+
+typedef struct _cairo_cogl_device {
+    cairo_device_t base;
+
+    cairo_bool_t backend_vtable_initialized;
+    cairo_backend_t backend;
+
+    /* We save a copy of all the original backend methods that we override so
+     * we can chain up...
+     */
+    cairo_backend_t backend_parent;
+
+    CoglContext *cogl_context;
+
+    CoglTexture *dummy_texture;
+
+    /* This is a sparsely filled set of templates because we don't support
+     * the full range of operators that cairo has. All entries corresponding
+     * to unsupported operators are NULL.
+     *
+     * The CAIRO_OPERATOR_ADD is the operator enum with the highest value that
+     * we support so we at least cap the size of the array by that.
+     *
+     * For each operator we have a template for when we have a solid source
+     * and another for each texture format that could be used as a source.
+     */
+    CoglPipeline *template_pipelines[CAIRO_OPERATOR_ADD + 1][CAIRO_COGL_TEMPLATE_TYPE_COUNT];
+
+    CoglMatrix identity;
+
+    /* Caches 1d linear gradient textures */
+    cairo_cache_t linear_cache;
+
+    cairo_cache_t path_fill_staging_cache;
+    cairo_cache_t path_fill_prim_cache;
+    cairo_cache_t path_stroke_staging_cache;
+    cairo_cache_t path_stroke_prim_cache;
+} cairo_cogl_device_t;
+
+typedef struct _cairo_cogl_clip_primitives {
+    cairo_t *clip;
+    CoglPrimitive **primitives;
+} cairo_cogl_clip_primitives_t;
+
+typedef struct _cairo_cogl_surface {
+    cairo_surface_t base;
+
+    CoglPixelFormat cogl_format;
+    cairo_bool_t ignore_alpha;
+
+    /* We currently have 3 basic kinds of Cogl surfaces:
+     * 1) A light surface simply wrapping a CoglTexture
+     * 2) A CoglOffscreen framebuffer that implicitly also wraps a CoglTexture
+     * 3) A CoglOnscreen framebuffer which could potentially be mapped to
+     *    a CoglTexture (e.g. via tfp on X11) but we don't currently do
+     *    that.
+     */
+
+    CoglTexture *texture;
+    CoglFramebuffer *framebuffer;
+
+    int width;
+    int height;
+
+    GQueue *journal;
+
+    CoglAttributeBuffer *buffer_stack;
+    size_t buffer_stack_size;
+    size_t buffer_stack_offset;
+    guint8 *buffer_stack_pointer;
+
+    cairo_clip_t *last_clip;
+
+    /* A small fifo of recently used cairo_clip_ts paired with CoglPrimitives
+     * that can be used to mask the stencil buffer. */
+    GList *clips_fifo;
+
+    int n_clip_updates_per_frame;
+
+    /* Since the surface backend drawing operator functions don't get
+     * passed the current cairo_t context we don't have a good way
+     * to get our user-coordinates path into our surface_fill function.
+     *
+     * For now we use our _cairo_cogl_context_fill() wrapper to set this
+     * side band data on the surface...
+     */
+    cairo_path_fixed_t *user_path;
+    cairo_matrix_t *ctm;
+    cairo_matrix_t *ctm_inverse;
+    cairo_bool_t path_is_rectangle;
+    double path_rectangle_x;
+    double path_rectangle_y;
+    double path_rectangle_width;
+    double path_rectangle_height;
+} cairo_cogl_surface_t;
+
+cairo_status_t
+_cairo_cogl_path_fixed_rectangle (cairo_path_fixed_t *path,
+				  cairo_fixed_t x,
+				  cairo_fixed_t y,
+				  cairo_fixed_t width,
+				  cairo_fixed_t height);
+
+cairo_int_status_t
+_cairo_cogl_surface_fill_rectangle (void		     *abstract_surface,
+				    cairo_operator_t	      op,
+				    const cairo_pattern_t    *source,
+				    double		      x,
+				    double		      y,
+				    double		      width,
+				    double		      height,
+				    cairo_matrix_t	     *ctm,
+				    const cairo_clip_t	     *clip);
+
+#endif /* CAIRO_COGL_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-surface.c b/libs/cairo-1.16.0/src/cairo-cogl-surface.c
new file mode 100644
index 0000000..2f7ed58
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-surface.c
@@ -0,0 +1,2806 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+#include "cairoint.h"
+
+#include "cairo-cache-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-fixed-private.h"
+#include "cairo-device-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-cogl-private.h"
+#include "cairo-cogl-gradient-private.h"
+#include "cairo-arc-private.h"
+#include "cairo-traps-private.h"
+#include "cairo-cogl-context-private.h"
+#include "cairo-cogl-utils-private.h"
+#include "cairo-box-inline.h"
+#include "cairo-surface-subsurface-inline.h"
+#include "cairo-surface-fallback-private.h"
+#include "cairo-surface-offset-private.h"
+
+#include "cairo-cogl.h"
+
+#include <cogl/cogl2-experimental.h>
+#include <glib.h>
+
+#define CAIRO_COGL_DEBUG 0
+//#define FILL_WITH_COGL_PATH
+//#define USE_CAIRO_PATH_FLATTENER
+#define ENABLE_PATH_CACHE
+//#define DISABLE_BATCHING
+#define USE_COGL_RECTANGLE_API
+#define ENABLE_RECTANGLES_FASTPATH
+
+#if defined (USE_COGL_RECTANGLE_API) || defined (ENABLE_PATH_CACHE)
+#define NEED_COGL_CONTEXT
+#endif
+
+#if CAIRO_COGL_DEBUG && __GNUC__
+#define UNSUPPORTED(reason) ({ \
+    g_warning ("cairo-cogl: hit unsupported operation: %s", reason); \
+    CAIRO_INT_STATUS_UNSUPPORTED; \
+})
+#else
+#define UNSUPPORTED(reason) CAIRO_INT_STATUS_UNSUPPORTED
+#endif
+
+#define CAIRO_COGL_PATH_META_CACHE_SIZE (1024 * 1024)
+
+typedef struct _cairo_cogl_texture_attributes {
+    /* nabbed from cairo_surface_attributes_t... */
+    cairo_matrix_t	    matrix;
+    cairo_extend_t	    extend;
+    cairo_filter_t	    filter;
+    cairo_bool_t	    has_component_alpha;
+
+    CoglPipelineWrapMode    s_wrap;
+    CoglPipelineWrapMode    t_wrap;
+} cairo_cogl_texture_attributes_t;
+
+typedef enum _cairo_cogl_journal_entry_type {
+    CAIRO_COGL_JOURNAL_ENTRY_TYPE_RECTANGLE,
+    CAIRO_COGL_JOURNAL_ENTRY_TYPE_PRIMITIVE,
+    CAIRO_COGL_JOURNAL_ENTRY_TYPE_PATH,
+    CAIRO_COGL_JOURNAL_ENTRY_TYPE_CLIP
+} cairo_cogl_journal_entry_type_t;
+
+typedef struct _cairo_cogl_journal_entry {
+    cairo_cogl_journal_entry_type_t type;
+} cairo_cogl_journal_entry_t;
+
+typedef struct _cairo_cogl_journal_clip_entry {
+    cairo_cogl_journal_entry_t base;
+    cairo_clip_t *clip;
+} cairo_cogl_journal_clip_entry_t;
+
+typedef struct _cairo_cogl_journal_rect_entry {
+    cairo_cogl_journal_entry_t base;
+    CoglPipeline *pipeline;
+    float x;
+    float y;
+    float width;
+    float height;
+    int n_layers;
+    cairo_matrix_t ctm;
+} cairo_cogl_journal_rect_entry_t;
+
+typedef struct _cairo_cogl_journal_prim_entry {
+    cairo_cogl_journal_entry_t base;
+    CoglPipeline *pipeline;
+    CoglPrimitive *primitive;
+    gboolean has_transform;
+    cairo_matrix_t transform;
+} cairo_cogl_journal_prim_entry_t;
+
+typedef struct _cairo_cogl_journal_path_entry {
+    cairo_cogl_journal_entry_t base;
+    CoglPipeline *pipeline;
+    CoglPath *path;
+} cairo_cogl_journal_path_entry_t;
+
+typedef struct _cairo_cogl_path_fill_meta {
+    cairo_cache_entry_t	cache_entry;
+    cairo_reference_count_t ref_count;
+    int counter;
+    cairo_path_fixed_t *user_path;
+    cairo_matrix_t ctm_inverse;
+
+    /* TODO */
+#if 0
+    /* A cached path tessellation should be re-usable with different rotations
+     * and translations but not for different scales.
+     *
+     * one idea is to track the diagonal lenghts of a unit rectangle
+     * transformed through the original ctm use to tessellate the geometry
+     * so we can check what the lengths are for any new ctm to know if
+     * this geometry is compatible.
+     */
+#endif
+
+    CoglPrimitive *prim;
+} cairo_cogl_path_fill_meta_t;
+
+typedef struct _cairo_cogl_path_stroke_meta {
+    cairo_cache_entry_t	cache_entry;
+    cairo_reference_count_t ref_count;
+    int counter;
+    cairo_path_fixed_t *user_path;
+    cairo_matrix_t ctm_inverse;
+    cairo_stroke_style_t style;
+    double tolerance;
+
+    /* TODO */
+#if 0
+    /* A cached path tessellation should be re-usable with different rotations
+     * and translations but not for different scales.
+     *
+     * one idea is to track the diagonal lenghts of a unit rectangle
+     * transformed through the original ctm use to tessellate the geometry
+     * so we can check what the lengths are for any new ctm to know if
+     * this geometry is compatible.
+     */
+#endif
+
+    CoglPrimitive *prim;
+} cairo_cogl_path_stroke_meta_t;
+
+static cairo_surface_t *
+_cairo_cogl_surface_create_full (cairo_cogl_device_t *dev,
+				 cairo_bool_t ignore_alpha,
+				 CoglFramebuffer *framebuffer,
+				 CoglTexture *texture);
+
+static cairo_int_status_t
+_cairo_cogl_surface_fill (void			    *abstract_surface,
+                          cairo_operator_t	     op,
+                          const cairo_pattern_t	    *source,
+                          const cairo_path_fixed_t  *path,
+                          cairo_fill_rule_t	     fill_rule,
+                          double		     tolerance,
+                          cairo_antialias_t	     antialias,
+                          const cairo_clip_t	    *clip);
+
+static void
+_cairo_cogl_journal_flush (cairo_cogl_surface_t *surface);
+
+cairo_private extern const cairo_surface_backend_t _cairo_cogl_surface_backend;
+
+slim_hidden_proto (cairo_cogl_device_create);
+slim_hidden_proto (cairo_cogl_surface_create);
+slim_hidden_proto (cairo_cogl_surface_get_framebuffer);
+slim_hidden_proto (cairo_cogl_surface_get_texture);
+slim_hidden_proto (cairo_cogl_surface_end_frame);
+
+static cairo_cogl_device_t *
+to_device (cairo_device_t *device)
+{
+    return (cairo_cogl_device_t *)device;
+}
+
+/* moves trap points such that they become the actual corners of the trapezoid */
+static void
+_sanitize_trap (cairo_trapezoid_t *t)
+{
+    cairo_trapezoid_t s = *t;
+
+#define FIX(lr, tb, p) \
+    if (t->lr.p.y != t->tb) { \
+        t->lr.p.x = s.lr.p2.x + _cairo_fixed_mul_div_floor (s.lr.p1.x - s.lr.p2.x, s.tb - s.lr.p2.y, s.lr.p1.y - s.lr.p2.y); \
+        t->lr.p.y = s.tb; \
+    }
+    FIX (left,  top,    p1);
+    FIX (left,  bottom, p2);
+    FIX (right, top,    p1);
+    FIX (right, bottom, p2);
+}
+
+static cairo_status_t
+_cairo_cogl_surface_ensure_framebuffer (cairo_cogl_surface_t *surface)
+{
+    GError *error = NULL;
+
+    if (surface->framebuffer)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->framebuffer = COGL_FRAMEBUFFER (cogl_offscreen_new_to_texture (surface->texture));
+    if (!cogl_framebuffer_allocate (surface->framebuffer, &error)) {
+	g_error_free (error);
+	cogl_object_unref (surface->framebuffer);
+	surface->framebuffer = NULL;
+	return CAIRO_STATUS_NO_MEMORY;
+    }
+
+    cogl_push_framebuffer (surface->framebuffer);
+    cogl_ortho (0, surface->width,
+		surface->height, 0,
+		-1, 100);
+    cogl_pop_framebuffer ();
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_cogl_surface_create_similar (void            *abstract_surface,
+				    cairo_content_t  content,
+				    int              width,
+				    int              height)
+{
+    cairo_cogl_surface_t *reference_surface = abstract_surface;
+    cairo_cogl_surface_t *surface;
+    CoglTexture *texture;
+    cairo_status_t status;
+
+    texture = cogl_texture_new_with_size (width, height,
+					  COGL_TEXTURE_NO_SLICING,
+					  (content & CAIRO_CONTENT_COLOR) ?
+					  COGL_PIXEL_FORMAT_BGRA_8888_PRE :
+					  COGL_PIXEL_FORMAT_A_8);
+    if (!texture)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface = (cairo_cogl_surface_t *)
+	_cairo_cogl_surface_create_full (to_device(reference_surface->base.device),
+					 (content & CAIRO_CONTENT_ALPHA) == 0,
+					 NULL,
+					 texture);
+    if (unlikely (surface->base.status))
+	return &surface->base;
+
+    status = _cairo_cogl_surface_ensure_framebuffer (surface);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&surface->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return &surface->base;
+}
+
+static cairo_bool_t
+_cairo_cogl_surface_get_extents (void *abstract_surface,
+                                 cairo_rectangle_int_t *extents)
+{
+    cairo_cogl_surface_t *surface = abstract_surface;
+
+    extents->x = 0;
+    extents->y = 0;
+    extents->width  = surface->width;
+    extents->height = surface->height;
+
+    return TRUE;
+}
+
+static void
+_cairo_cogl_journal_free (cairo_cogl_surface_t *surface)
+{
+    GList *l;
+
+    for (l = surface->journal->head; l; l = l->next) {
+	cairo_cogl_journal_entry_t *entry = l->data;
+
+	if (entry->type == CAIRO_COGL_JOURNAL_ENTRY_TYPE_PRIMITIVE) {
+	    cairo_cogl_journal_prim_entry_t *prim_entry =
+		(cairo_cogl_journal_prim_entry_t *)entry;
+	    cogl_object_unref (prim_entry->primitive);
+	} else if (entry->type == CAIRO_COGL_JOURNAL_ENTRY_TYPE_PATH) {
+	    cairo_cogl_journal_path_entry_t *path_entry =
+		(cairo_cogl_journal_path_entry_t *)entry;
+	    cogl_object_unref (path_entry->path);
+	}
+    }
+
+    g_queue_free (surface->journal);
+    surface->journal = NULL;
+}
+
+#ifdef FILL_WITH_COGL_PATH
+static void
+_cairo_cogl_journal_log_path (cairo_cogl_surface_t *surface,
+			      CoglPipeline *pipeline,
+			      CoglPath *path)
+{
+    cairo_cogl_journal_path_entry_t *entry;
+
+    if (unlikely (surface->journal == NULL))
+	surface->journal = g_queue_new ();
+
+    /* FIXME: Instead of a GList here we should stack allocate the journal
+     * entries so it would be cheaper to allocate and they can all be freed in
+     * one go after flushing! */
+    entry = g_slice_new (cairo_cogl_journal_path_entry_t);
+    entry->base.type = CAIRO_COGL_JOURNAL_ENTRY_TYPE_PATH;
+
+    entry->pipeline = cogl_object_ref (pipeline);
+    entry->path = cogl_object_ref (path);
+
+    g_queue_push_tail (surface->journal, entry);
+
+#ifdef DISABLE_BATCHING
+    _cairo_cogl_journal_flush (surface);
+#endif
+}
+#endif /* FILL_WITH_COGL_PATH */
+
+static void
+_cairo_cogl_journal_log_primitive (cairo_cogl_surface_t *surface,
+				   CoglPipeline *pipeline,
+				   CoglPrimitive *primitive,
+				   cairo_matrix_t *transform)
+{
+    cairo_cogl_journal_prim_entry_t *entry;
+
+    if (unlikely (surface->journal == NULL))
+	surface->journal = g_queue_new ();
+
+    /* FIXME: Instead of a GList here we should stack allocate the journal
+     * entries so it would be cheaper to allocate and they can all be freed in
+     * one go after flushing! */
+    entry = g_slice_new (cairo_cogl_journal_prim_entry_t);
+    entry->base.type = CAIRO_COGL_JOURNAL_ENTRY_TYPE_PRIMITIVE;
+
+    entry->pipeline = cogl_object_ref (pipeline);
+
+    if (transform) {
+	entry->transform = *transform;
+	entry->has_transform = TRUE;
+    } else
+	entry->has_transform = FALSE;
+
+    entry->primitive = cogl_object_ref (primitive);
+
+    g_queue_push_tail (surface->journal, entry);
+
+#ifdef DISABLE_BATCHING
+    _cairo_cogl_journal_flush (surface);
+#endif
+}
+
+static void
+_cairo_cogl_journal_log_rectangle (cairo_cogl_surface_t *surface,
+				   CoglPipeline *pipeline,
+				   float x,
+				   float y,
+				   float width,
+				   float height,
+				   int n_layers,
+				   cairo_matrix_t *ctm)
+{
+    cairo_cogl_journal_rect_entry_t *entry;
+
+    if (unlikely (surface->journal == NULL))
+	surface->journal = g_queue_new ();
+
+    /* FIXME: Instead of a GList here we should stack allocate the journal
+     * entries so it would be cheaper to allocate and they can all be freed in
+     * one go after flushing! */
+    entry = g_slice_new (cairo_cogl_journal_rect_entry_t);
+    entry->base.type = CAIRO_COGL_JOURNAL_ENTRY_TYPE_RECTANGLE;
+
+    entry->pipeline = cogl_object_ref (pipeline);
+
+    entry->x = x;
+    entry->y = y;
+    entry->width = width;
+    entry->height = height;
+    entry->ctm = *ctm;
+
+    entry->n_layers = n_layers;
+
+    g_queue_push_tail (surface->journal, entry);
+
+#ifdef DISABLE_BATCHING
+    _cairo_cogl_journal_flush (surface);
+#endif
+}
+
+static void
+_cairo_cogl_journal_log_clip (cairo_cogl_surface_t *surface,
+			      const cairo_clip_t *clip)
+{
+    cairo_cogl_journal_clip_entry_t *entry;
+
+    if (unlikely (surface->journal == NULL))
+	surface->journal = g_queue_new ();
+
+    /* FIXME: Instead of a GList here we should stack allocate the journal
+     * entries so it would be cheaper to allocate and they can all be freed in
+     * one go after flushing! */
+    entry = g_slice_new (cairo_cogl_journal_clip_entry_t);
+    entry->base.type = CAIRO_COGL_JOURNAL_ENTRY_TYPE_CLIP;
+    entry->clip = _cairo_clip_copy (clip);
+
+    g_queue_push_tail (surface->journal, entry);
+}
+
+static void
+_cairo_cogl_journal_discard (cairo_cogl_surface_t *surface)
+{
+    GList *l;
+
+    if (!surface->journal) {
+	assert (surface->last_clip == NULL);
+	return;
+    }
+
+    if (surface->buffer_stack && surface->buffer_stack_offset) {
+	cogl_buffer_unmap (COGL_BUFFER (surface->buffer_stack));
+	cogl_object_unref (surface->buffer_stack);
+	surface->buffer_stack = NULL;
+    }
+
+    for (l = surface->journal->head; l; l = l->next) {
+	cairo_cogl_journal_entry_t *entry = l->data;
+	gsize entry_size;
+
+	switch (entry->type)
+	{
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_CLIP: {
+	    cairo_cogl_journal_clip_entry_t *clip_entry =
+		(cairo_cogl_journal_clip_entry_t *)entry;
+	    _cairo_clip_destroy (clip_entry->clip);
+	    entry_size = sizeof (cairo_cogl_journal_clip_entry_t);
+	    break;
+	}
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_RECTANGLE: {
+	    cairo_cogl_journal_rect_entry_t *rect_entry =
+		(cairo_cogl_journal_rect_entry_t *)entry;
+	    cogl_object_unref (rect_entry->pipeline);
+	    entry_size = sizeof (cairo_cogl_journal_rect_entry_t);
+	    break;
+	}
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_PRIMITIVE: {
+	    cairo_cogl_journal_prim_entry_t *prim_entry =
+		(cairo_cogl_journal_prim_entry_t *)entry;
+	    cogl_object_unref (prim_entry->pipeline);
+	    cogl_object_unref (prim_entry->primitive);
+	    entry_size = sizeof (cairo_cogl_journal_prim_entry_t);
+	    break;
+	}
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_PATH: {
+	    cairo_cogl_journal_path_entry_t *path_entry =
+		(cairo_cogl_journal_path_entry_t *)entry;
+	    cogl_object_unref (path_entry->pipeline);
+	    cogl_object_unref (path_entry->path);
+	    entry_size = sizeof (cairo_cogl_journal_path_entry_t);
+	    break;
+	}
+	default:
+	    assert (0); /* not reached! */
+	    entry_size = 0; /* avoid compiler warning */
+	}
+	g_slice_free1 (entry_size, entry);
+    }
+
+    g_queue_clear (surface->journal);
+
+    if (surface->last_clip) {
+	_cairo_clip_destroy (surface->last_clip);
+	surface->last_clip = NULL;
+    }
+}
+
+static CoglAttributeBuffer *
+_cairo_cogl_surface_allocate_buffer_space (cairo_cogl_surface_t *surface,
+					   size_t size,
+					   size_t *offset,
+					   void **pointer)
+{
+    /* XXX: In the Cogl journal we found it more efficient to have a pool of
+     * buffers that we re-cycle but for now we simply throw away our stack
+     * buffer each time we flush. */
+    if (unlikely (surface->buffer_stack &&
+		  (surface->buffer_stack_size - surface->buffer_stack_offset) < size)) {
+	cogl_buffer_unmap (COGL_BUFFER (surface->buffer_stack));
+	cogl_object_unref (surface->buffer_stack);
+	surface->buffer_stack = NULL;
+	surface->buffer_stack_size *= 2;
+    }
+
+    if (unlikely (surface->buffer_stack_size < size))
+	surface->buffer_stack_size = size * 2;
+
+    if (unlikely (surface->buffer_stack == NULL)) {
+	surface->buffer_stack = cogl_attribute_buffer_new (surface->buffer_stack_size, NULL);
+	surface->buffer_stack_pointer =
+	    cogl_buffer_map (COGL_BUFFER (surface->buffer_stack),
+			     COGL_BUFFER_ACCESS_WRITE,
+			     COGL_BUFFER_MAP_HINT_DISCARD);
+	surface->buffer_stack_offset = 0;
+    }
+
+    *pointer = surface->buffer_stack_pointer + surface->buffer_stack_offset;
+    *offset = surface->buffer_stack_offset;
+
+    surface->buffer_stack_offset += size;
+    return cogl_object_ref (surface->buffer_stack);
+}
+
+
+static CoglAttributeBuffer *
+_cairo_cogl_traps_to_triangles_buffer (cairo_cogl_surface_t *surface,
+				       cairo_traps_t *traps,
+				       size_t *offset,
+				       gboolean one_shot)
+{
+    CoglAttributeBuffer *buffer;
+    int n_traps = traps->num_traps;
+    int i;
+    CoglVertexP2 *triangles;
+
+    if (one_shot) {
+	buffer = _cairo_cogl_surface_allocate_buffer_space (surface,
+							    n_traps * sizeof (CoglVertexP2) * 6,
+							    offset,
+							    (void **)&triangles);
+	if (!buffer)
+	    return NULL;
+    } else {
+	buffer = cogl_attribute_buffer_new (n_traps * sizeof (CoglVertexP2) * 6, NULL);
+	if (!buffer)
+	    return NULL;
+	triangles = cogl_buffer_map (COGL_BUFFER (buffer),
+				     COGL_BUFFER_ACCESS_WRITE,
+				     COGL_BUFFER_MAP_HINT_DISCARD);
+	if (!triangles)
+	    return NULL;
+	*offset = 0;
+    }
+
+    /* XXX: This is can be very expensive. I'm not sure a.t.m if it's
+     * predominantly the bandwidth required or the cost of the fixed_to_float
+     * conversions but either way we should try using an index buffer to
+     * reduce the amount we upload by 1/3 (offset by allocating and uploading
+     * indices though) sadly though my experience with the intel mesa drivers
+     * is that slow paths can easily be hit when starting to use indices.
+     */
+    for (i = 0; i < n_traps; i++)
+    {
+	CoglVertexP2 *p = &triangles[i * 6];
+	cairo_trapezoid_t *trap = &traps->traps[i];
+
+	p[0].x = _cairo_cogl_util_fixed_to_float (trap->left.p1.x);
+	p[0].y = _cairo_cogl_util_fixed_to_float (trap->left.p1.y);
+
+	p[1].x = _cairo_cogl_util_fixed_to_float (trap->left.p2.x);
+	p[1].y = _cairo_cogl_util_fixed_to_float (trap->left.p2.y);
+
+	p[2].x = _cairo_cogl_util_fixed_to_float (trap->right.p2.x);
+	p[2].y = _cairo_cogl_util_fixed_to_float (trap->right.p2.y);
+
+	p[3].x = _cairo_cogl_util_fixed_to_float (trap->left.p1.x);
+	p[3].y = _cairo_cogl_util_fixed_to_float (trap->left.p1.y);
+
+	p[4].x = _cairo_cogl_util_fixed_to_float (trap->right.p2.x);
+	p[4].y = _cairo_cogl_util_fixed_to_float (trap->right.p2.y);
+
+	p[5].x = _cairo_cogl_util_fixed_to_float (trap->right.p1.x);
+	p[5].y = _cairo_cogl_util_fixed_to_float (trap->right.p1.y);
+    }
+
+    if (!one_shot)
+	cogl_buffer_unmap (COGL_BUFFER (buffer));
+
+    return buffer;
+}
+
+/* Used for solid fills, in this case we just need a mesh made of
+ * a single (2-component) position attribute. */
+static CoglPrimitive *
+_cairo_cogl_traps_to_composite_prim_p2 (cairo_cogl_surface_t *surface,
+					cairo_traps_t *traps,
+					gboolean one_shot)
+{
+    size_t offset;
+    CoglAttributeBuffer *buffer = _cairo_cogl_traps_to_triangles_buffer (surface, traps, &offset, one_shot);
+    CoglAttribute *pos = cogl_attribute_new (buffer,
+					     "cogl_position_in",
+					     sizeof (CoglVertexP2),
+					     offset,
+					     2,
+					     COGL_ATTRIBUTE_TYPE_FLOAT);
+    CoglPrimitive *prim;
+
+    /* The attribute will have taken a reference on the buffer */
+    cogl_object_unref (buffer);
+
+    prim = cogl_primitive_new (COGL_VERTICES_MODE_TRIANGLES,
+			       traps->num_traps * 6, pos, NULL);
+
+    /* The primitive will now keep the attribute alive... */
+    cogl_object_unref (pos);
+
+    return prim;
+}
+
+/* Used for surface fills, in this case we need a mesh made of a single
+ * (2-component) position attribute + we also alias the same attribute as
+ * (2-component) texture coordinates */
+static CoglPrimitive *
+_cairo_cogl_traps_to_composite_prim_p2t2 (cairo_cogl_surface_t *surface,
+					  cairo_traps_t *traps,
+					  gboolean one_shot)
+{
+    size_t offset;
+    CoglAttributeBuffer *buffer = _cairo_cogl_traps_to_triangles_buffer (surface, traps, &offset, one_shot);
+    CoglAttribute *pos = cogl_attribute_new (buffer,
+					     "cogl_position_in",
+					     sizeof (CoglVertexP2),
+					     offset,
+					     2,
+					     COGL_ATTRIBUTE_TYPE_FLOAT);
+    CoglAttribute *tex_coords = cogl_attribute_new (buffer,
+						    "cogl_tex_coord0_in",
+						    sizeof (CoglVertexP2),
+						    0,
+						    2,
+						    COGL_ATTRIBUTE_TYPE_FLOAT);
+    CoglPrimitive *prim;
+
+    /* The attributes will have taken references on the buffer */
+    cogl_object_unref (buffer);
+
+    prim = cogl_primitive_new (COGL_VERTICES_MODE_TRIANGLES,
+			       traps->num_traps * 6, pos, tex_coords, NULL);
+
+    /* The primitive will now keep the attributes alive... */
+    cogl_object_unref (pos);
+    cogl_object_unref (tex_coords);
+
+    return prim;
+}
+
+static CoglPrimitive *
+_cairo_cogl_traps_to_composite_prim (cairo_cogl_surface_t *surface,
+				     cairo_traps_t *traps,
+				     int n_layers,
+				     gboolean one_shot)
+{
+    int n_traps = traps->num_traps;
+    int i;
+
+    /* XXX: Ideally we would skip tessellating to traps entirely since
+     * given their representation, conversion to triangles is quite expensive.
+     *
+     * This simplifies the conversion to triangles by making the end points of
+     * the two side lines actually just correspond to the corners of the
+     * traps.
+     */
+    for (i = 0; i < n_traps; i++)
+	_sanitize_trap (&traps->traps[i]);
+
+    if (n_layers == 0)
+	return _cairo_cogl_traps_to_composite_prim_p2 (surface, traps, one_shot);
+    else {
+	assert (n_layers == 1);
+	return _cairo_cogl_traps_to_composite_prim_p2t2 (surface, traps, one_shot);
+    }
+}
+
+static cairo_int_status_t
+_cairo_cogl_fill_to_primitive (cairo_cogl_surface_t	*surface,
+			       const cairo_path_fixed_t	*path,
+			       cairo_fill_rule_t	 fill_rule,
+			       double			 tolerance,
+			       int			 n_layers,
+			       cairo_bool_t		 one_shot,
+			       CoglPrimitive	       **primitive,
+			       size_t			*size)
+{
+    cairo_traps_t traps;
+    cairo_int_status_t status;
+
+    _cairo_traps_init (&traps);
+    status = _cairo_path_fixed_fill_to_traps (path, fill_rule, tolerance, &traps);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (traps.num_traps == 0) {
+	status = CAIRO_INT_STATUS_NOTHING_TO_DO;
+	goto BAIL;
+    }
+
+    *size = traps.num_traps * sizeof (CoglVertexP2) * 6;
+
+    *primitive = _cairo_cogl_traps_to_composite_prim (surface, &traps, n_layers, one_shot);
+    if (!*primitive) {
+	status = CAIRO_INT_STATUS_NO_MEMORY;
+	goto BAIL;
+    }
+
+BAIL:
+    _cairo_traps_fini (&traps);
+    return status;
+}
+
+static void
+_cairo_cogl_clip_push_box (const cairo_box_t *box)
+{
+    if (_cairo_box_is_pixel_aligned (box)) {
+	cairo_rectangle_int_t rect;
+	_cairo_box_round_to_rectangle (box, &rect);
+	cogl_clip_push_window_rectangle (rect.x, rect.y,
+					 rect.width, rect.height);
+    } else {
+	double x1, y1, x2, y2;
+	_cairo_box_to_doubles (box, &x1, &y1, &x2, &y2);
+	cogl_clip_push_rectangle (x1, y1, x2, y2);
+    }
+}
+
+static void
+_cairo_cogl_journal_flush (cairo_cogl_surface_t *surface)
+{
+    GList *l;
+    int clip_stack_depth = 0;
+    int i;
+
+    if (!surface->journal)
+	return;
+
+    if (surface->buffer_stack && surface->buffer_stack_offset) {
+	cogl_buffer_unmap (COGL_BUFFER (surface->buffer_stack));
+	cogl_object_unref (surface->buffer_stack);
+	surface->buffer_stack = NULL;
+    }
+
+    cogl_set_framebuffer (surface->framebuffer);
+
+    cogl_push_matrix ();
+
+    for (l = surface->journal->head; l; l = l->next) {
+	cairo_cogl_journal_entry_t *entry = l->data;
+
+	switch (entry->type)
+	{
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_CLIP: {
+	    cairo_cogl_journal_clip_entry_t *clip_entry =
+		(cairo_cogl_journal_clip_entry_t *)entry;
+	    cairo_clip_path_t *path;
+#if 0
+	    cairo_bool_t checked_for_primitives = FALSE;
+	    cairo_cogl_clip_primitives_t *clip_primitives;
+#endif
+
+	    for (i = 0; i < clip_stack_depth; i++)
+		cogl_clip_pop ();
+	    clip_stack_depth = 0;
+
+	    for (path = clip_entry->clip->path, i = 0; path; path = path->prev, i++) {
+		cairo_rectangle_int_t extents;
+		cairo_int_status_t status;
+		CoglPrimitive *prim;
+		size_t prim_size;
+
+		_cairo_path_fixed_approximate_clip_extents (&path->path, &extents);
+
+		/* TODO - maintain a fifo of the last 10 used clips with cached
+		 * primitives to see if we can avoid tessellating the path and
+		 * uploading the vertices...
+		 */
+#if 0
+		if (!checked_for_primitives) {
+		    clip_primitives = find_clip_primitives (clip);
+		    checked_for_primitives = TRUE;
+		}
+		if (clip_primitives)
+		    prim = clip_primitives->primitives[i];
+#endif
+		status = _cairo_cogl_fill_to_primitive (surface,
+							&path->path,
+							path->fill_rule,
+							path->tolerance,
+							0,
+							TRUE,
+							&prim,
+							&prim_size);
+		if (unlikely (status)) {
+		    g_warning ("Failed to get primitive for clip path while flushing journal");
+		    continue;
+		}
+		clip_stack_depth++;
+		cogl_clip_push_primitive (prim,
+					  extents.x, extents.y,
+					  extents.x + extents.width,
+					  extents.y + extents.height);
+		cogl_object_unref (prim);
+	    }
+
+	    for (i = 0; i < clip_entry->clip->num_boxes; i++) {
+		clip_stack_depth++;
+		_cairo_cogl_clip_push_box (&clip_entry->clip->boxes[i]);
+	    }
+
+	    surface->n_clip_updates_per_frame++;
+	    break;
+	}
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_RECTANGLE: {
+	    cairo_cogl_journal_rect_entry_t *rect_entry =
+		(cairo_cogl_journal_rect_entry_t *)entry;
+	    float tex_coords[8];
+	    float x1 = rect_entry->x;
+	    float y1 = rect_entry->y;
+	    float x2 = rect_entry->x + rect_entry->width;
+	    float y2 = rect_entry->y + rect_entry->height;
+	    cairo_matrix_t *ctm = &rect_entry->ctm;
+	    float ctmfv[16] = {
+		ctm->xx, ctm->yx, 0, 0,
+		ctm->xy, ctm->yy, 0, 0,
+		0,	     0,	      1, 0,
+		ctm->x0, ctm->y0, 0, 1
+	    };
+	    CoglMatrix transform;
+
+	    cogl_matrix_init_from_array (&transform, ctmfv);
+
+	    if (rect_entry->n_layers) {
+		g_assert (rect_entry->n_layers <= 2);
+		tex_coords[0] = x1;
+		tex_coords[1] = y1;
+		tex_coords[2] = x2;
+		tex_coords[3] = y2;
+		if (rect_entry->n_layers > 1)
+		    memcpy (&tex_coords[4], tex_coords, sizeof (float) * 4);
+	    }
+
+	    cogl_set_source (rect_entry->pipeline);
+	    cogl_push_matrix ();
+	    cogl_transform (&transform);
+	    cogl_rectangle_with_multitexture_coords (x1, y1, x2, y2,
+						     tex_coords, 4 * rect_entry->n_layers);
+	    cogl_pop_matrix ();
+	    break;
+	}
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_PRIMITIVE: {
+	    cairo_cogl_journal_prim_entry_t *prim_entry =
+		(cairo_cogl_journal_prim_entry_t *)entry;
+	    CoglMatrix transform;
+
+	    cogl_push_matrix ();
+	    if (prim_entry->has_transform) {
+		cairo_matrix_t *ctm = &prim_entry->transform;
+		float ctmfv[16] = {
+		    ctm->xx, ctm->yx, 0, 0,
+		    ctm->xy, ctm->yy, 0, 0,
+		    0,	     0,	      1, 0,
+		    ctm->x0, ctm->y0, 0, 1
+		};
+		cogl_matrix_init_from_array (&transform, ctmfv);
+		cogl_transform (&transform);
+	    } else {
+		cogl_matrix_init_identity (&transform);
+		cogl_set_modelview_matrix (&transform);
+	    }
+
+	    cogl_set_source (prim_entry->pipeline);
+	    cogl_primitive_draw (prim_entry->primitive);
+	    cogl_pop_matrix ();
+	    break;
+	}
+	case CAIRO_COGL_JOURNAL_ENTRY_TYPE_PATH: {
+	    cairo_cogl_journal_path_entry_t *path_entry =
+		(cairo_cogl_journal_path_entry_t *)entry;
+
+	    cogl_set_source (path_entry->pipeline);
+	    cogl_path_fill (path_entry->path);
+	    break;
+	}
+	default:
+	    assert (0); /* not reached! */
+	}
+    }
+
+    cogl_pop_matrix ();
+
+    for (i = 0; i < clip_stack_depth; i++)
+	cogl_clip_pop ();
+
+    _cairo_cogl_journal_discard (surface);
+}
+
+static cairo_status_t
+_cairo_cogl_surface_flush (void *abstract_surface,
+			   unsigned flags)
+{
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)abstract_surface;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_cogl_journal_flush (surface);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_surface_finish (void *abstract_surface)
+{
+    cairo_cogl_surface_t *surface = abstract_surface;
+
+    if (surface->texture)
+	cogl_object_unref (surface->texture);
+
+    if (surface->framebuffer)
+	cogl_object_unref (surface->framebuffer);
+
+    if (surface->journal)
+	_cairo_cogl_journal_free (surface);
+
+    /*XXX wtf */
+    cairo_device_release (surface->base.device);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static CoglPixelFormat
+get_cogl_format_from_cairo_format (cairo_format_t cairo_format);
+
+/* XXX: We often use RGBA format for onscreen framebuffers so make sure
+ * to handle CAIRO_FORMAT_INVALID sensibly */
+static cairo_format_t
+get_cairo_format_from_cogl_format (CoglPixelFormat format)
+{
+    switch ((int)format)
+    {
+    case COGL_PIXEL_FORMAT_A_8:
+	return CAIRO_FORMAT_A8;
+    case COGL_PIXEL_FORMAT_RGB_565:
+	return CAIRO_FORMAT_RGB16_565;
+
+    case COGL_PIXEL_FORMAT_BGRA_8888_PRE:
+    case COGL_PIXEL_FORMAT_ARGB_8888_PRE:
+    case COGL_PIXEL_FORMAT_RGBA_8888_PRE:
+	/* Note: this is ambiguous since CAIRO_FORMAT_RGB24
+	 * would also map to the same CoglPixelFormat */
+	return CAIRO_FORMAT_ARGB32;
+
+    default:
+	g_warning("bad format: %x a? %d, bgr? %d, pre %d, format: %d\n",
+		  format,
+		  format & COGL_A_BIT,
+		  format & COGL_BGR_BIT,
+		  format & COGL_PREMULT_BIT,
+		  format & ~(COGL_A_BIT | COGL_BGR_BIT | COGL_PREMULT_BIT));
+	return CAIRO_FORMAT_INVALID;
+    }
+}
+
+static CoglPixelFormat
+get_cogl_format_from_cairo_format (cairo_format_t cairo_format)
+{
+    switch (cairo_format)
+    {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+	return COGL_PIXEL_FORMAT_BGRA_8888_PRE;
+#else
+	return COGL_PIXEL_FORMAT_ARGB_8888_PRE;
+#endif
+    case CAIRO_FORMAT_A8:
+	return COGL_PIXEL_FORMAT_A_8;
+    case CAIRO_FORMAT_RGB16_565:
+	return COGL_PIXEL_FORMAT_RGB_565;
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_RGB30:
+	return 0;
+    }
+
+    g_warn_if_reached ();
+    return 0;
+}
+
+static cairo_status_t
+_cairo_cogl_surface_read_rect_to_image_surface (cairo_cogl_surface_t   *surface,
+						cairo_rectangle_int_t  *interest,
+						cairo_image_surface_t **image_out)
+{
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+    cairo_format_t cairo_format;
+    CoglPixelFormat cogl_format;
+
+    /* TODO: Add cogl_texture_get_region() API so we don't have to ensure the
+     * surface is bound to an fbo to read back pixels */
+    status = _cairo_cogl_surface_ensure_framebuffer (surface);
+    if (unlikely (status))
+	return status;
+
+    cairo_format = get_cairo_format_from_cogl_format (surface->cogl_format);
+    if (cairo_format == CAIRO_FORMAT_INVALID) {
+	cairo_format = CAIRO_FORMAT_ARGB32;
+	cogl_format = get_cogl_format_from_cairo_format (cairo_format);
+    } else {
+	cogl_format = cogl_framebuffer_get_color_format (surface->framebuffer);
+    }
+
+    image = (cairo_image_surface_t *)
+	cairo_image_surface_create (cairo_format, surface->width, surface->height);
+    if (image->base.status)
+	return image->base.status;
+
+    /* TODO: Add cogl_framebuffer_read_pixels() API */
+    cogl_push_framebuffer (surface->framebuffer);
+    cogl_read_pixels (0, 0, surface->width, surface->height,
+		      COGL_READ_PIXELS_COLOR_BUFFER,
+		      cogl_format,
+		      image->data);
+    cogl_pop_framebuffer ();
+
+    *image_out = image;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_cogl_surface_acquire_source_image (void		         *abstract_surface,
+					  cairo_image_surface_t **image_out,
+					  void		        **image_extra)
+{
+    cairo_cogl_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (surface->texture) {
+	cairo_format_t format = get_cairo_format_from_cogl_format (surface->cogl_format);
+	cairo_image_surface_t *image = (cairo_image_surface_t *)
+	    cairo_image_surface_create (format, surface->width, surface->height);
+	if (image->base.status)
+	    return image->base.status;
+
+	cogl_texture_get_data (surface->texture,
+			       cogl_texture_get_format (surface->texture),
+			       0,
+			       image->data);
+
+	image->base.is_clear = FALSE;
+	*image_out = image;
+    } else {
+	cairo_rectangle_int_t extents = {
+	    0, 0, surface->width, surface->height
+	};
+	status = _cairo_cogl_surface_read_rect_to_image_surface (surface, &extents,
+								 image_out);
+	if (unlikely (status))
+	    return status;
+    }
+
+    *image_extra = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_cogl_surface_release_source_image (void			*abstract_surface,
+					  cairo_image_surface_t *image,
+					  void			*image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_status_t
+_cairo_cogl_surface_clear (cairo_cogl_surface_t *surface,
+			   const cairo_color_t *color)
+{
+    /* Anything batched in the journal up until now is redundant... */
+    _cairo_cogl_journal_discard (surface);
+
+    /* XXX: we currently implicitly clear the depth and stencil buffer here
+     * but since we use the framebuffer_discard extension when available I
+     * suppose this doesn't matter too much.
+     *
+     * The main concern is that we want to avoid re-loading an external z
+     * buffer at the start of each frame, but also many gpu architectures have
+     * optimizations for how they handle the depth/stencil buffers and can get
+     * upset if they aren't cleared together at the start of the frame.
+     *
+     * FIXME: we need a way to assert that the clip stack currently isn't
+     * using the stencil buffer before clearing it here!
+     */
+    cogl_framebuffer_clear4f (surface->framebuffer,
+			      COGL_BUFFER_BIT_COLOR |
+			      COGL_BUFFER_BIT_DEPTH |
+			      COGL_BUFFER_BIT_STENCIL,
+			      color->red * color->alpha,
+			      color->green * color->alpha,
+			      color->blue * color->alpha,
+			      color->alpha);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_cogl_path_fixed_rectangle (cairo_path_fixed_t *path,
+				  cairo_fixed_t x,
+				  cairo_fixed_t y,
+				  cairo_fixed_t width,
+				  cairo_fixed_t height)
+{
+    cairo_status_t status;
+
+    status = _cairo_path_fixed_move_to (path, x, y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_rel_line_to (path, width, 0);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_rel_line_to (path, 0, height);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_rel_line_to (path, -width, 0);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_close_path (path);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_cogl_surface_paint (void                  *abstract_surface,
+                           cairo_operator_t       op,
+                           const cairo_pattern_t *source,
+                           const cairo_clip_t    *clip)
+{
+    cairo_cogl_surface_t *surface;
+    cairo_path_fixed_t path;
+    cairo_status_t status;
+    cairo_matrix_t identity;
+
+    if (clip == NULL) {
+	if (op == CAIRO_OPERATOR_CLEAR)
+            return _cairo_cogl_surface_clear (abstract_surface, CAIRO_COLOR_TRANSPARENT);
+	else if (source->type == CAIRO_PATTERN_TYPE_SOLID &&
+                (op == CAIRO_OPERATOR_SOURCE ||
+                 (op == CAIRO_OPERATOR_OVER && (((cairo_surface_t *)abstract_surface)->is_clear || _cairo_pattern_is_opaque_solid (source))))) {
+            return _cairo_cogl_surface_clear (abstract_surface,
+					      &((cairo_solid_pattern_t *) source)->color);
+        }
+    }
+
+    /* fallback to handling the paint in terms of a fill... */
+
+    surface = abstract_surface;
+
+    _cairo_path_fixed_init (&path);
+
+    status = _cairo_cogl_path_fixed_rectangle (&path, 0, 0, surface->width, surface->height);
+    if (unlikely (status))
+	goto BAIL;
+
+#ifdef NEED_COGL_CONTEXT
+    /* XXX: in cairo-cogl-context.c we set some sideband data on the
+     * surface before issuing a fill so we need to do that here too... */
+    surface->user_path = &path;
+    cairo_matrix_init_identity (&identity);
+    surface->ctm = &identity;
+    surface->ctm_inverse = &identity;
+    surface->path_is_rectangle = TRUE;
+    surface->path_rectangle_x = 0;
+    surface->path_rectangle_y = 0;
+    surface->path_rectangle_width = surface->width;
+    surface->path_rectangle_height = surface->height;
+#endif
+
+    status = _cairo_cogl_surface_fill (abstract_surface,
+				       op,
+				       source,
+				       &path,
+				       CAIRO_FILL_RULE_WINDING,
+				       1,
+				       CAIRO_ANTIALIAS_DEFAULT,
+				       clip);
+BAIL:
+    _cairo_path_fixed_fini (&path);
+    return status;
+}
+
+static CoglPipelineWrapMode
+get_cogl_wrap_mode_for_extend (cairo_extend_t extend_mode)
+{
+    switch (extend_mode)
+    {
+    case CAIRO_EXTEND_NONE:
+	return COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE;
+    case CAIRO_EXTEND_PAD:
+	return COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE;
+    case CAIRO_EXTEND_REPEAT:
+	return COGL_PIPELINE_WRAP_MODE_REPEAT;
+    case CAIRO_EXTEND_REFLECT:
+	/* TODO: return COGL_PIPELINE_WRAP_MODE_MIRROR; */
+	return CAIRO_EXTEND_REPEAT;
+    }
+    assert (0); /* not reached */
+    return COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE;
+}
+
+#if 0
+/* Given an arbitrary texture, check if it's already a pot texture and simply
+ * return it back if so. If not create a new pot texture, scale the old to
+ * fill it, unref the old and return a pointer to the new pot texture. */
+static cairo_int_status_t
+_cairo_cogl_get_pot_texture (CoglContext *context,
+			     CoglTexture *texture,
+			     CoglTexture **pot_texture)
+{
+    int width = cogl_texture_get_width (texture);
+    int height = cogl_texture_get_height (texture);
+    int pot_width;
+    int pot_height;
+    CoglHandle offscreen = NULL;
+    CoglTexture2D *pot = NULL;
+    GError *error;
+
+    pot_width = _cairo_cogl_util_next_p2 (width);
+    pot_height = _cairo_cogl_util_next_p2 (height);
+
+    if (pot_width == width && pot_height == height)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    for (;;) {
+	error = NULL;
+	pot = cogl_texture_2d_new_with_size (context,
+					     pot_width,
+					     pot_height,
+					     cogl_texture_get_format (texture),
+					     &error);
+	if (pot)
+	    break;
+	else
+	    g_error_free (error);
+
+	if (pot_width > pot_height)
+	    pot_width >>= 1;
+	else
+	    pot_height >>= 1;
+
+	if (!pot_width || !pot_height)
+	    break;
+    }
+
+    *pot_texture = COGL_TEXTURE (pot);
+
+    if (!pot)
+	return CAIRO_INT_STATUS_NO_MEMORY;
+
+    /* Use the GPU to do a bilinear filtered scale from npot to pot... */
+    offscreen = cogl_offscreen_new_to_texture (COGL_TEXTURE (pot));
+    error = NULL;
+    if (!cogl_framebuffer_allocate (COGL_FRAMEBUFFER (offscreen), &error)) {
+	/* NB: if we don't pass an error then Cogl is allowed to simply abort
+	 * automatically. */
+	g_error_free (error);
+	cogl_object_unref (pot);
+	*pot_texture = NULL;
+	return CAIRO_INT_STATUS_NO_MEMORY;
+    }
+
+    cogl_push_framebuffer (COGL_FRAMEBUFFER (offscreen));
+    cogl_set_source_texture (texture);
+    cogl_rectangle (-1, 1, 1, -1);
+    cogl_pop_framebuffer ();
+
+    cogl_object_unref (offscreen);
+}
+#endif
+
+/* NB: a reference for the texture is transferred to the caller which should
+ * be unrefed */
+static CoglTexture *
+_cairo_cogl_acquire_surface_texture (cairo_cogl_surface_t  *reference_surface,
+				     cairo_surface_t	   *abstract_surface)
+{
+    cairo_image_surface_t *image;
+    cairo_image_surface_t *acquired_image = NULL;
+    void *image_extra;
+    CoglPixelFormat format;
+    cairo_image_surface_t *image_clone = NULL;
+    CoglTexture2D *texture;
+    GError *error = NULL;
+    cairo_surface_t *clone;
+
+    if (abstract_surface->device == reference_surface->base.device) {
+	cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)abstract_surface;
+	_cairo_cogl_surface_flush (surface, 0);
+	return surface->texture ? cogl_object_ref (surface->texture) : NULL;
+    }
+
+    if (abstract_surface->type == CAIRO_SURFACE_TYPE_COGL) {
+	if (_cairo_surface_is_subsurface (abstract_surface)) {
+	    cairo_cogl_surface_t *surface;
+
+	    surface = (cairo_cogl_surface_t *)
+		_cairo_surface_subsurface_get_target (abstract_surface);
+	    if (surface->base.device == reference_surface->base.device)
+		return surface->texture ? cogl_object_ref (surface->texture) : NULL;
+	}
+    }
+
+    clone = _cairo_surface_has_snapshot (abstract_surface, &_cairo_cogl_surface_backend);
+    if (clone) {
+	cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)clone;
+	return surface->texture ? cogl_object_ref (surface->texture) : NULL;
+    }
+
+    g_warning ("Uploading image surface to texture");
+
+    if (_cairo_surface_is_image (abstract_surface)) {
+	image = (cairo_image_surface_t *)abstract_surface;
+    } else {
+	cairo_status_t status = _cairo_surface_acquire_source_image (abstract_surface,
+								     &acquired_image, &image_extra);
+	if (unlikely (status)) {
+	    g_warning ("acquire_source_image failed: %s [%d]\n",
+		       cairo_status_to_string (status), status);
+	    return NULL;
+	}
+	image = acquired_image;
+    }
+
+    format = get_cogl_format_from_cairo_format (image->format);
+    if (!format)
+    {
+	image_clone = _cairo_image_surface_coerce (image);
+	if (unlikely (image_clone->base.status)) {
+	    g_warning ("image_surface_coerce failed");
+	    texture = NULL;
+	    goto BAIL;
+	}
+
+	format = get_cogl_format_from_cairo_format (image_clone->format);
+	assert (format);
+    }
+
+    texture = cogl_texture_2d_new_from_data (to_device(reference_surface->base.device)->cogl_context,
+					     image->width,
+					     image->height,
+					     format, /* incoming */
+					     format, /* desired */
+					     image->stride,
+					     image->data,
+					     &error);
+    if (!texture) {
+	g_warning ("Failed to allocate texture: %s", error->message);
+	g_error_free (error);
+	goto BAIL;
+    }
+
+    clone = _cairo_cogl_surface_create_full (to_device(reference_surface->base.device),
+					     reference_surface->ignore_alpha,
+					     NULL, COGL_TEXTURE (texture));
+
+    _cairo_surface_attach_snapshot (abstract_surface, clone, NULL);
+
+    /* Attaching the snapshot will take a reference on the clone surface... */
+    cairo_surface_destroy (clone);
+
+BAIL:
+    if (image_clone)
+	cairo_surface_destroy (&image_clone->base);
+    if (acquired_image)
+	_cairo_surface_release_source_image (abstract_surface, acquired_image, image_extra);
+
+    return COGL_TEXTURE (texture);
+}
+
+/* NB: a reference for the texture is transferred to the caller which should
+ * be unrefed */
+static CoglTexture *
+_cairo_cogl_acquire_pattern_texture (const cairo_pattern_t *pattern,
+				     cairo_cogl_surface_t *destination,
+				     const cairo_rectangle_int_t *extents,
+				     const cairo_rectangle_int_t *sample,
+				     cairo_cogl_texture_attributes_t *attributes)
+{
+    CoglTexture *texture = NULL;
+
+    switch ((int)pattern->type)
+    {
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_t *surface = ((cairo_surface_pattern_t *)pattern)->surface;
+	texture = _cairo_cogl_acquire_surface_texture (destination, surface);
+	if (!texture)
+	    return NULL;
+
+	/* XXX: determine if it would have no effect to change the
+	 * extend mode to EXTEND_PAD instead since we can simply map
+	 * EXTEND_PAD to CLAMP_TO_EDGE without needing fragment shader
+	 * tricks or extra border texels. */
+#if 0
+	/* TODO: We still need to consider HW such as SGX which doesn't have
+	 * full support for NPOT textures. */
+	if (pattern->extend == CAIRO_EXTEND_REPEAT || pattern->extend == CAIRO_EXTEND_REFLECT) {
+	    _cairo_cogl_get_pot_texture ();
+	}
+#endif
+
+	cairo_matrix_init_identity (&attributes->matrix);
+
+	/* Convert from un-normalized source coordinates in backend
+	 * coordinates to normalized texture coordinates */
+	cairo_matrix_scale (&attributes->matrix,
+			    1.0f / cogl_texture_get_width (texture),
+			    1.0f / cogl_texture_get_height (texture));
+
+	/* XXX: need to multiply in the pattern->matrix */
+
+	attributes->extend = pattern->extend;
+	attributes->filter = CAIRO_FILTER_BILINEAR;
+	attributes->has_component_alpha = pattern->has_component_alpha;
+
+	attributes->s_wrap = get_cogl_wrap_mode_for_extend (pattern->extend);
+	attributes->t_wrap = attributes->s_wrap;
+
+	return texture;
+    }
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH: {
+	cairo_surface_t *surface;
+	cairo_matrix_t texture_matrix;
+
+	surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+					      extents->width, extents->height);
+	if (_cairo_surface_offset_paint (surface,
+					 extents->x, extents->y,
+					 CAIRO_OPERATOR_SOURCE,
+					 pattern, NULL)) {
+	    cairo_surface_destroy (surface);
+	    return NULL;
+	}
+
+	texture = _cairo_cogl_acquire_surface_texture (destination, surface);
+	if (!texture)
+	    goto BAIL;
+
+	cairo_matrix_init_identity (&texture_matrix);
+
+	/* Convert from un-normalized source coordinates in backend
+	 * coordinates to normalized texture coordinates */
+	cairo_matrix_scale (&texture_matrix,
+			    1.0f / cogl_texture_get_width (texture),
+			    1.0f / cogl_texture_get_height (texture));
+
+	cairo_matrix_translate (&texture_matrix, -extents->x, -extents->y);
+
+	attributes->matrix = texture_matrix;
+	attributes->extend = pattern->extend;
+	attributes->filter = CAIRO_FILTER_NEAREST;
+	attributes->has_component_alpha = pattern->has_component_alpha;
+
+	/* any pattern extend modes have already been dealt with... */
+	attributes->s_wrap = COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE;
+	attributes->t_wrap = attributes->s_wrap;
+
+BAIL:
+	cairo_surface_destroy (surface);
+
+	return texture;
+    }
+    case CAIRO_PATTERN_TYPE_LINEAR: {
+	cairo_linear_pattern_t *linear_pattern = (cairo_linear_pattern_t *)pattern;
+	cairo_cogl_linear_gradient_t *gradient;
+	cairo_cogl_linear_texture_entry_t *linear_texture;
+	cairo_int_status_t status;
+	float a, b;
+	float dist;
+	float scale;
+	float angle;
+
+	status = _cairo_cogl_get_linear_gradient (to_device(destination->base.device),
+						  pattern->extend,
+						  linear_pattern->base.n_stops,
+						  linear_pattern->base.stops,
+						  &gradient);
+	if (unlikely (status))
+	    return NULL;
+
+	linear_texture = _cairo_cogl_linear_gradient_texture_for_extend (gradient, pattern->extend);
+
+	attributes->extend = pattern->extend;
+	attributes->filter = CAIRO_FILTER_BILINEAR;
+	attributes->has_component_alpha = pattern->has_component_alpha;
+	attributes->s_wrap = get_cogl_wrap_mode_for_extend (pattern->extend);
+	attributes->t_wrap = COGL_PIPELINE_WRAP_MODE_REPEAT;
+
+	cairo_matrix_init_identity (&attributes->matrix);
+
+	a = linear_pattern->pd2.x - linear_pattern->pd1.x;
+	b = linear_pattern->pd2.y - linear_pattern->pd1.y;
+	dist = sqrtf (a*a + b*b);
+	scale = 1.0f / dist;
+	angle = - atan2f (b, a);
+
+	cairo_matrix_rotate (&attributes->matrix, angle);
+	cairo_matrix_scale (&attributes->matrix, scale, scale);
+
+	cairo_matrix_translate (&attributes->matrix,
+				-linear_pattern->pd1.x,
+				-linear_pattern->pd1.y);
+
+	/* XXX: this caught me out: cairo doesn't follow the standard
+	 * maths convention for multiplying two matrices A x B - cairo
+	 * does B x A so the final matrix is as if A's transforms were
+	 * applied first.
+	 */
+	cairo_matrix_multiply (&attributes->matrix,
+			       &pattern->matrix,
+			       &attributes->matrix);
+
+	return cogl_object_ref (linear_texture->texture);
+    }
+    default:
+	g_warning ("Un-supported source type");
+	return NULL;
+    }
+}
+
+static void
+set_layer_texture_with_attributes (CoglPipeline *pipeline,
+				   int layer_index,
+				   CoglTexture *texture,
+				   cairo_cogl_texture_attributes_t *attributes)
+{
+    cogl_pipeline_set_layer_texture (pipeline, layer_index, texture);
+
+    if (!_cairo_matrix_is_identity (&attributes->matrix)) {
+	cairo_matrix_t *m = &attributes->matrix;
+	float texture_matrixfv[16] = {
+	    m->xx, m->yx, 0, 0,
+	    m->xy, m->yy, 0, 0,
+	    0, 0, 1, 0,
+	    m->x0, m->y0, 0, 1
+	};
+	CoglMatrix texture_matrix;
+	cogl_matrix_init_from_array (&texture_matrix, texture_matrixfv);
+	cogl_pipeline_set_layer_matrix (pipeline, layer_index, &texture_matrix);
+    }
+
+    if (attributes->s_wrap != attributes->t_wrap) {
+	cogl_pipeline_set_layer_wrap_mode_s (pipeline, layer_index, attributes->s_wrap);
+	cogl_pipeline_set_layer_wrap_mode_t (pipeline, layer_index, attributes->t_wrap);
+    } else
+	cogl_pipeline_set_layer_wrap_mode (pipeline, layer_index, attributes->s_wrap);
+}
+
+static CoglPipeline *
+get_source_mask_operator_destination_pipeline (const cairo_pattern_t *mask,
+					       const cairo_pattern_t *source,
+					       cairo_operator_t op,
+					       cairo_cogl_surface_t *destination,
+					       cairo_composite_rectangles_t *extents)
+{
+    cairo_cogl_template_type template_type;
+    CoglPipeline *pipeline;
+
+    switch ((int)source->type)
+    {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	template_type = mask ?
+	    CAIRO_COGL_TEMPLATE_TYPE_MASK_SOLID : CAIRO_COGL_TEMPLATE_TYPE_SOLID;
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+	template_type = mask ?
+	    CAIRO_COGL_TEMPLATE_TYPE_MASK_TEXTURE : CAIRO_COGL_TEMPLATE_TYPE_TEXTURE;
+	break;
+    default:
+	g_warning ("Un-supported source type");
+	return NULL;
+    }
+
+    pipeline = cogl_pipeline_copy (to_device(destination->base.device)->template_pipelines[op][template_type]);
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	cairo_solid_pattern_t *solid_pattern = (cairo_solid_pattern_t *)source;
+	cogl_pipeline_set_color4f (pipeline,
+				   solid_pattern->color.red * solid_pattern->color.alpha,
+				   solid_pattern->color.green * solid_pattern->color.alpha,
+				   solid_pattern->color.blue * solid_pattern->color.alpha,
+				   solid_pattern->color.alpha);
+    } else {
+	cairo_cogl_texture_attributes_t attributes;
+	CoglTexture *texture =
+	    _cairo_cogl_acquire_pattern_texture (source, destination,
+						 &extents->bounded,
+						 &extents->source_sample_area,
+						 &attributes);
+	if (!texture)
+	    goto BAIL;
+	set_layer_texture_with_attributes (pipeline, 0, texture, &attributes);
+	cogl_object_unref (texture);
+    }
+
+    if (mask) {
+	if (mask->type == CAIRO_PATTERN_TYPE_SOLID) {
+	    cairo_solid_pattern_t *solid_pattern = (cairo_solid_pattern_t *)mask;
+	    CoglColor color;
+	    cogl_color_init_from_4f (&color,
+				     solid_pattern->color.red * solid_pattern->color.alpha,
+				     solid_pattern->color.green * solid_pattern->color.alpha,
+				     solid_pattern->color.blue * solid_pattern->color.alpha,
+				     solid_pattern->color.alpha);
+	    cogl_pipeline_set_layer_combine_constant (pipeline, 1, &color);
+	} else {
+	    cairo_cogl_texture_attributes_t attributes;
+	    CoglTexture *texture =
+		_cairo_cogl_acquire_pattern_texture (mask, destination,
+						     &extents->bounded,
+						     &extents->mask_sample_area,
+						     &attributes);
+	    if (!texture)
+		goto BAIL;
+	    set_layer_texture_with_attributes (pipeline, 1, texture, &attributes);
+	    cogl_object_unref (texture);
+	}
+    }
+
+    return pipeline;
+
+BAIL:
+    cogl_object_unref (pipeline);
+    return NULL;
+}
+
+#if 0
+CoglPrimitive *
+_cairo_cogl_rectangle_new_p2t2t2 (float x,
+				  float y,
+				  float width,
+				  float height)
+{
+    CoglVertexP2 vertices[] = {
+	{x, y}, {x, y + height}, {x + width, y + height},
+	{x, y}, {x + width, y + height}, {x + width, y}
+    };
+    CoglAttributeBuffer *buffer = cogl_attribute_buffer_new (sizeof (vertices));
+    CoglAttribute *pos = cogl_attribute_new (buffer,
+					     "cogl_position_in",
+					     sizeof (CoglVertexP2),
+					     0,
+					     2,
+					     COGL_ATTRIBUTE_TYPE_FLOAT);
+    CoglAttribute *tex_coords0 = cogl_attribute_new (buffer,
+						     "cogl_tex_coord0_in",
+						     sizeof (CoglVertexP2),
+						     0,
+						     2,
+						     COGL_ATTRIBUTE_TYPE_FLOAT);
+    CoglAttribute *tex_coords0 = cogl_attribute_new (buffer,
+						     "cogl_tex_coord0_in",
+						     sizeof (CoglVertexP2),
+						     0,
+						     2,
+						     COGL_ATTRIBUTE_TYPE_FLOAT);
+    CoglPrimitive *prim;
+
+    cogl_buffer_set_data (COGL_BUFFER (buffer), 0, vertices, sizeof (vertices));
+
+    /* The attributes will now keep the buffer alive... */
+    cogl_object_unref (buffer);
+
+    prim = cogl_primitive_new (COGL_VERTICES_MODE_TRIANGLES,
+			       6, pos, tex_coords, NULL);
+
+    /* The primitive will now keep the attribute alive... */
+    cogl_object_unref (pos);
+
+    return prim;
+}
+#endif
+
+static void
+_cairo_cogl_log_clip (cairo_cogl_surface_t *surface,
+		      const cairo_clip_t *clip)
+{
+    if (!_cairo_clip_equal (clip, surface->last_clip)) {
+	_cairo_cogl_journal_log_clip (surface, clip);
+	_cairo_clip_destroy (surface->last_clip);
+	surface->last_clip = _cairo_clip_copy (clip);
+    }
+}
+
+static void
+_cairo_cogl_maybe_log_clip (cairo_cogl_surface_t *surface,
+			    cairo_composite_rectangles_t *composite)
+{
+    cairo_clip_t *clip = composite->clip;
+
+    if (_cairo_composite_rectangles_can_reduce_clip (composite, clip))
+	clip = NULL;
+
+    if (clip == NULL) {
+	if (_cairo_composite_rectangles_can_reduce_clip (composite,
+							 surface->last_clip))
+	    return;
+    }
+
+    _cairo_cogl_log_clip (surface, clip);
+}
+
+static cairo_bool_t
+is_operator_supported (cairo_operator_t op)
+{
+    switch ((int)op) {
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_ADD:
+	return TRUE;
+
+    default:
+	return FALSE;
+    }
+}
+
+static cairo_int_status_t
+_cairo_cogl_surface_mask (void                    *abstract_surface,
+                          cairo_operator_t         op,
+                          const cairo_pattern_t   *source,
+                          const cairo_pattern_t   *mask,
+                          const cairo_clip_t      *clip)
+{
+    cairo_cogl_surface_t *surface = abstract_surface;
+    cairo_composite_rectangles_t extents;
+    cairo_status_t status;
+    CoglPipeline *pipeline;
+    cairo_matrix_t identity;
+
+    /* XXX: Use this to smoke test the acquire_source/dest_image fallback
+     * paths... */
+    //return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (!is_operator_supported (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_composite_rectangles_init_for_mask (&extents,
+							&surface->base,
+							op, source, mask, clip);
+    if (unlikely (status))
+	return status;
+
+    pipeline = get_source_mask_operator_destination_pipeline (mask, source,
+							      op, surface, &extents);
+    if (!pipeline){
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	goto BAIL;
+    }
+
+    _cairo_cogl_maybe_log_clip (surface, &extents);
+
+    cairo_matrix_init_identity (&identity);
+    _cairo_cogl_journal_log_rectangle (surface, pipeline,
+				       extents.bounded.x,
+				       extents.bounded.y,
+				       extents.bounded.width,
+				       extents.bounded.height,
+				       2,
+				       &identity);
+
+    /* The journal will take a reference on the pipeline and clip_path... */
+    cogl_object_unref (pipeline);
+
+BAIL:
+    return status;
+}
+
+static int
+_cairo_cogl_source_n_layers (const cairo_pattern_t *source)
+{
+    switch ((int)source->type)
+    {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return 0;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return 1;
+    default:
+	g_warning ("Unsupported source type");
+	return 0;
+    }
+}
+
+static cairo_bool_t
+_cairo_cogl_path_fill_meta_equal (const void *key_a, const void *key_b)
+{
+    const cairo_cogl_path_fill_meta_t *meta0 = key_a;
+    const cairo_cogl_path_fill_meta_t *meta1 = key_b;
+
+    return _cairo_path_fixed_equal (meta0->user_path, meta1->user_path);
+}
+
+static cairo_bool_t
+_cairo_cogl_stroke_style_equal (const cairo_stroke_style_t *a,
+			        const cairo_stroke_style_t *b)
+{
+    if (a->line_width == b->line_width &&
+	a->line_cap == b->line_cap &&
+	a->line_join == b->line_join &&
+	a->miter_limit == b->miter_limit &&
+	a->num_dashes == b->num_dashes &&
+	a->dash_offset == b->dash_offset)
+    {
+	unsigned int i;
+	for (i = 0; i < a->num_dashes; i++) {
+	    if (a->dash[i] != b->dash[i])
+		return FALSE;
+	}
+    }
+    return TRUE;
+}
+
+static cairo_bool_t
+_cairo_cogl_path_stroke_meta_equal (const void *key_a, const void *key_b)
+{
+    const cairo_cogl_path_stroke_meta_t *meta0 = key_a;
+    const cairo_cogl_path_stroke_meta_t *meta1 = key_b;
+
+    return _cairo_cogl_stroke_style_equal (&meta0->style, &meta1->style) &&
+	_cairo_path_fixed_equal (meta0->user_path, meta1->user_path);
+}
+
+static cairo_cogl_path_stroke_meta_t *
+_cairo_cogl_path_stroke_meta_reference (cairo_cogl_path_stroke_meta_t *meta)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&meta->ref_count));
+
+    _cairo_reference_count_inc (&meta->ref_count);
+
+    return meta;
+}
+
+static void
+_cairo_cogl_path_stroke_meta_destroy (cairo_cogl_path_stroke_meta_t *meta)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&meta->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&meta->ref_count))
+	return;
+
+    _cairo_path_fixed_fini (meta->user_path);
+    free (meta->user_path);
+
+    _cairo_stroke_style_fini (&meta->style);
+
+    if (meta->prim)
+	cogl_object_unref (meta->prim);
+
+    free (meta);
+}
+
+static cairo_cogl_path_stroke_meta_t *
+_cairo_cogl_path_stroke_meta_lookup (cairo_cogl_device_t	*ctx,
+				     unsigned long		 hash,
+				     cairo_path_fixed_t		*user_path,
+				     const cairo_stroke_style_t *style,
+				     double			 tolerance)
+{
+    cairo_cogl_path_stroke_meta_t *ret;
+    cairo_cogl_path_stroke_meta_t lookup;
+
+    lookup.cache_entry.hash = hash;
+    lookup.user_path = user_path;
+    lookup.style = *style;
+    lookup.tolerance = tolerance;
+
+    ret = _cairo_cache_lookup (&ctx->path_stroke_staging_cache, &lookup.cache_entry);
+    if (!ret)
+	ret = _cairo_cache_lookup (&ctx->path_stroke_prim_cache, &lookup.cache_entry);
+    return ret;
+}
+
+static void
+_cairo_cogl_path_stroke_meta_set_prim_size (cairo_cogl_surface_t *surface,
+					    cairo_cogl_path_stroke_meta_t *meta,
+					    size_t size)
+{
+    /* now that we know the meta structure is associated with a primitive
+     * we promote it from the staging cache into the primitive cache.
+     */
+
+    /* XXX: _cairo_cache borks if you try and remove an entry that's already
+     * been evicted so we explicitly look it up first... */
+    if (_cairo_cache_lookup (&to_device(surface->base.device)->path_stroke_staging_cache, &meta->cache_entry)) {
+	_cairo_cogl_path_stroke_meta_reference (meta);
+	_cairo_cache_remove (&to_device(surface->base.device)->path_stroke_staging_cache, &meta->cache_entry);
+    }
+
+    meta->cache_entry.size = size;
+    if (_cairo_cache_insert (&to_device(surface->base.device)->path_stroke_prim_cache, &meta->cache_entry) !=
+	CAIRO_STATUS_SUCCESS)
+	_cairo_cogl_path_stroke_meta_destroy (meta);
+}
+
+static unsigned int
+_cairo_cogl_stroke_style_hash (unsigned int hash,
+			       const cairo_stroke_style_t *style)
+{
+    unsigned int i;
+    hash = _cairo_hash_bytes (hash, &style->line_width, sizeof (style->line_width));
+    hash = _cairo_hash_bytes (hash, &style->line_cap, sizeof (style->line_cap));
+    hash = _cairo_hash_bytes (hash, &style->line_join, sizeof (style->line_join));
+    hash = _cairo_hash_bytes (hash, &style->miter_limit, sizeof (style->miter_limit));
+    hash = _cairo_hash_bytes (hash, &style->num_dashes, sizeof (style->num_dashes));
+    hash = _cairo_hash_bytes (hash, &style->dash_offset, sizeof (style->dash_offset));
+    for (i = 0; i < style->num_dashes; i++)
+	hash = _cairo_hash_bytes (hash, &style->dash[i], sizeof (double));
+    return hash;
+}
+
+static cairo_cogl_path_stroke_meta_t *
+_cairo_cogl_get_path_stroke_meta (cairo_cogl_surface_t *surface,
+				  const cairo_stroke_style_t *style,
+				  double tolerance)
+{
+    unsigned long hash;
+    cairo_cogl_path_stroke_meta_t *meta = NULL;
+    cairo_path_fixed_t *meta_path = NULL;
+    cairo_status_t status;
+
+    if (!surface->user_path)
+	return NULL;
+
+    hash = _cairo_path_fixed_hash (surface->user_path);
+    hash = _cairo_cogl_stroke_style_hash (hash, style);
+    hash = _cairo_hash_bytes (hash, &tolerance, sizeof (tolerance));
+
+    meta = _cairo_cogl_path_stroke_meta_lookup (to_device(surface->base.device), hash,
+						surface->user_path, style, tolerance);
+    if (meta)
+	return meta;
+
+    meta = calloc (1, sizeof (cairo_cogl_path_stroke_meta_t));
+    if (!meta)
+	goto BAIL;
+    CAIRO_REFERENCE_COUNT_INIT (&meta->ref_count, 1);
+    meta->cache_entry.hash = hash;
+    meta->counter = 0;
+    meta_path = _cairo_malloc (sizeof (cairo_path_fixed_t));
+    if (!meta_path)
+	goto BAIL;
+    /* FIXME: we should add a ref-counted wrapper for our user_paths
+     * so we don't have to keep copying them here! */
+    status = _cairo_path_fixed_init_copy (meta_path, surface->user_path);
+    if (unlikely (status))
+	goto BAIL;
+    meta->user_path = meta_path;
+    meta->ctm_inverse = *surface->ctm_inverse;
+
+    status = _cairo_stroke_style_init_copy (&meta->style, style);
+    if (unlikely (status)) {
+	_cairo_path_fixed_fini (meta_path);
+	goto BAIL;
+    }
+    meta->tolerance = tolerance;
+
+    return meta;
+
+BAIL:
+    free (meta_path);
+    free (meta);
+    return NULL;
+}
+
+static cairo_int_status_t
+_cairo_cogl_stroke_to_primitive (cairo_cogl_surface_t	    *surface,
+				 const cairo_path_fixed_t   *path,
+				 const cairo_stroke_style_t *style,
+				 const cairo_matrix_t	    *ctm,
+				 const cairo_matrix_t	    *ctm_inverse,
+				 double			     tolerance,
+				 int			     n_layers,
+				 cairo_bool_t		     one_shot,
+				 CoglPrimitive		   **primitive,
+				 size_t			    *size)
+{
+    cairo_traps_t traps;
+    cairo_int_status_t status;
+
+    _cairo_traps_init (&traps);
+
+    status = _cairo_path_fixed_stroke_polygon_to_traps (path, style,
+							ctm, ctm_inverse,
+							tolerance,
+							&traps);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (traps.num_traps == 0) {
+	status = CAIRO_INT_STATUS_NOTHING_TO_DO;
+	goto BAIL;
+    }
+
+    *size = traps.num_traps * sizeof (CoglVertexP2) * 6;
+
+    //g_print ("new stroke prim\n");
+    *primitive = _cairo_cogl_traps_to_composite_prim (surface, &traps, n_layers, one_shot);
+    if (!*primitive) {
+	status = CAIRO_INT_STATUS_NO_MEMORY;
+	goto BAIL;
+    }
+
+BAIL:
+    _cairo_traps_fini (&traps);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_cogl_surface_stroke (void                       *abstract_surface,
+			    cairo_operator_t            op,
+			    const cairo_pattern_t      *source,
+			    const cairo_path_fixed_t   *path,
+			    const cairo_stroke_style_t *style,
+			    const cairo_matrix_t       *ctm,
+			    const cairo_matrix_t       *ctm_inverse,
+			    double                      tolerance,
+			    cairo_antialias_t           antialias,
+			    const cairo_clip_t         *clip)
+{
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)abstract_surface;
+    cairo_composite_rectangles_t extents;
+    CoglPipeline *pipeline;
+    cairo_status_t status;
+#ifdef ENABLE_PATH_CACHE
+    cairo_cogl_path_stroke_meta_t *meta = NULL;
+    cairo_matrix_t transform_matrix;
+#endif
+    cairo_matrix_t *transform = NULL;
+    gboolean one_shot = TRUE;
+    CoglPrimitive *prim = NULL;
+    cairo_bool_t new_prim = FALSE;
+
+    if (! is_operator_supported (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* FIXME - support unbounded operators */
+    if (!_cairo_operator_bounded_by_mask (op)) {
+	/* Currently IN this is the only unbounded operator we aim to support
+	 * in cairo-cogl. */
+	assert (op == CAIRO_OPERATOR_IN);
+	g_warning ("FIXME: handle stroking with unbounded operators!");
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  &surface->base,
+							  op, source, path,
+							  style,
+							  ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+#ifdef ENABLE_PATH_CACHE
+    /* FIXME: we are currently leaking the meta state if we don't reach
+     * the cache_insert at the end. */
+    meta = _cairo_cogl_get_path_stroke_meta (surface, style, tolerance);
+    if (meta) {
+	prim = meta->prim;
+	if (prim) {
+	    cairo_matrix_multiply (&transform_matrix, &meta->ctm_inverse, surface->ctm);
+	    transform = &transform_matrix;
+	} else if (meta->counter++ > 10)
+	    one_shot = FALSE;
+    }
+#endif
+
+    if (!prim) {
+	int n_layers = _cairo_cogl_source_n_layers (source);
+	size_t prim_size = 0;
+	status = _cairo_cogl_stroke_to_primitive (surface, path, style,
+						  ctm, ctm_inverse, tolerance,
+						  n_layers, one_shot,
+						  &prim, &prim_size);
+	if (unlikely (status))
+	    return status;
+	new_prim = TRUE;
+#if defined (ENABLE_PATH_CACHE)
+	if (meta) {
+	    meta->prim = cogl_object_ref (prim);
+	    _cairo_cogl_path_stroke_meta_set_prim_size (surface, meta, prim_size);
+	}
+#endif
+    }
+
+    pipeline = get_source_mask_operator_destination_pipeline (NULL, source,
+							      op, surface, &extents);
+    if (!pipeline)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_cogl_maybe_log_clip (surface, &extents);
+
+    _cairo_cogl_journal_log_primitive (surface, pipeline, prim, transform);
+
+    /* The journal will take a reference on the pipeline and primitive... */
+    cogl_object_unref (pipeline);
+    if (new_prim)
+	cogl_object_unref (prim);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_cogl_path_fill_meta_t *
+_cairo_cogl_path_fill_meta_reference (cairo_cogl_path_fill_meta_t *meta)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&meta->ref_count));
+
+    _cairo_reference_count_inc (&meta->ref_count);
+
+    return meta;
+}
+
+static void
+_cairo_cogl_path_fill_meta_destroy (cairo_cogl_path_fill_meta_t *meta)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&meta->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&meta->ref_count))
+	return;
+
+    _cairo_path_fixed_fini (meta->user_path);
+    free (meta->user_path);
+
+    if (meta->prim)
+	cogl_object_unref (meta->prim);
+
+    free (meta);
+}
+
+static cairo_cogl_path_fill_meta_t *
+_cairo_cogl_path_fill_meta_lookup (cairo_cogl_device_t	*ctx,
+				   unsigned long	 hash,
+				   cairo_path_fixed_t	*user_path)
+{
+    cairo_cogl_path_fill_meta_t *ret;
+    cairo_cogl_path_fill_meta_t lookup;
+
+    lookup.cache_entry.hash = hash;
+    lookup.user_path = user_path;
+
+    ret = _cairo_cache_lookup (&ctx->path_fill_staging_cache, &lookup.cache_entry);
+    if (!ret)
+	ret = _cairo_cache_lookup (&ctx->path_fill_prim_cache, &lookup.cache_entry);
+    return ret;
+}
+
+static void
+_cairo_cogl_path_fill_meta_set_prim_size (cairo_cogl_surface_t *surface,
+					  cairo_cogl_path_fill_meta_t *meta,
+					  size_t size)
+{
+    /* now that we know the meta structure is associated with a primitive
+     * we promote it from the staging cache into the primitive cache.
+     */
+
+    /* XXX: _cairo_cache borks if you try and remove an entry that's already
+     * been evicted so we explicitly look it up first... */
+    if (_cairo_cache_lookup (&to_device(surface->base.device)->path_fill_staging_cache, &meta->cache_entry)) {
+	_cairo_cogl_path_fill_meta_reference (meta);
+	_cairo_cache_remove (&to_device(surface->base.device)->path_fill_staging_cache, &meta->cache_entry);
+    }
+
+    meta->cache_entry.size = size;
+    if (_cairo_cache_insert (&to_device(surface->base.device)->path_fill_prim_cache, &meta->cache_entry) !=
+	CAIRO_STATUS_SUCCESS)
+	_cairo_cogl_path_fill_meta_destroy (meta);
+}
+
+static cairo_cogl_path_fill_meta_t *
+_cairo_cogl_get_path_fill_meta (cairo_cogl_surface_t *surface)
+{
+    unsigned long hash;
+    cairo_cogl_path_fill_meta_t *meta = NULL;
+    cairo_path_fixed_t *meta_path = NULL;
+    cairo_status_t status;
+
+    if (!surface->user_path)
+	return NULL;
+
+    hash = _cairo_path_fixed_hash (surface->user_path);
+
+    meta = _cairo_cogl_path_fill_meta_lookup (to_device(surface->base.device),
+					      hash, surface->user_path);
+    if (meta)
+	return meta;
+
+    meta = calloc (1, sizeof (cairo_cogl_path_fill_meta_t));
+    if (!meta)
+	goto BAIL;
+    meta->cache_entry.hash = hash;
+    meta->counter = 0;
+    CAIRO_REFERENCE_COUNT_INIT (&meta->ref_count, 1);
+    meta_path = _cairo_malloc (sizeof (cairo_path_fixed_t));
+    if (!meta_path)
+	goto BAIL;
+    /* FIXME: we should add a ref-counted wrapper for our user_paths
+     * so we don't have to keep copying them here! */
+    status = _cairo_path_fixed_init_copy (meta_path, surface->user_path);
+    if (unlikely (status))
+	goto BAIL;
+    meta->user_path = meta_path;
+    meta->ctm_inverse = *surface->ctm_inverse;
+
+    /* To start with - until we associate a CoglPrimitive with the meta
+     * structure - we keep the meta in a staging structure until we
+     * see whether it actually gets re-used. */
+    meta->cache_entry.size = 1;
+    if (_cairo_cache_insert (&to_device(surface->base.device)->path_fill_staging_cache, &meta->cache_entry) !=
+	CAIRO_STATUS_SUCCESS)
+	_cairo_cogl_path_fill_meta_destroy (meta);
+
+    return meta;
+
+BAIL:
+    free (meta_path);
+    free (meta);
+    return NULL;
+}
+
+static cairo_int_status_t
+_cairo_cogl_surface_fill (void			    *abstract_surface,
+                          cairo_operator_t	     op,
+                          const cairo_pattern_t	    *source,
+                          const cairo_path_fixed_t  *path,
+                          cairo_fill_rule_t	     fill_rule,
+                          double		     tolerance,
+                          cairo_antialias_t	     antialias,
+                          const cairo_clip_t	    *clip)
+{
+    cairo_cogl_surface_t *surface = abstract_surface;
+    cairo_composite_rectangles_t extents;
+    cairo_status_t status;
+#ifdef ENABLE_PATH_CACHE
+    cairo_cogl_path_fill_meta_t *meta = NULL;
+    cairo_matrix_t transform_matrix;
+#endif
+    cairo_matrix_t *transform = NULL;
+    cairo_bool_t one_shot = TRUE;
+    CoglPrimitive *prim = NULL;
+    cairo_bool_t new_prim = FALSE;
+    CoglPipeline *pipeline;
+
+    if (! is_operator_supported (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* FIXME - support unbounded operators */
+    if (!_cairo_operator_bounded_by_mask (op)) {
+	/* Currently IN this is the only unbounded operator we aim to support
+	 * in cairo-cogl. */
+	assert (op == CAIRO_OPERATOR_IN);
+	g_warning ("FIXME: handle filling with unbounded operators!");
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = _cairo_composite_rectangles_init_for_fill (&extents,
+							&surface->base,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+#ifndef FILL_WITH_COGL_PATH
+#ifdef ENABLE_PATH_CACHE
+    meta = _cairo_cogl_get_path_fill_meta (surface);
+    if (meta) {
+	prim = meta->prim;
+	if (prim) {
+	    cairo_matrix_multiply (&transform_matrix, &meta->ctm_inverse, surface->ctm);
+	    transform = &transform_matrix;
+	} else if (meta->counter++ > 10)
+	    one_shot = FALSE;
+    }
+#endif /* ENABLE_PATH_CACHE */
+
+    if (!prim) {
+	int n_layers = _cairo_cogl_source_n_layers (source);
+	size_t prim_size;
+	status = _cairo_cogl_fill_to_primitive (surface, path, fill_rule, tolerance,
+						one_shot, n_layers, &prim, &prim_size);
+	if (unlikely (status))
+	    return status;
+	new_prim = TRUE;
+#ifdef ENABLE_PATH_CACHE
+	if (meta) {
+	    meta->prim = cogl_object_ref (prim);
+	    _cairo_cogl_path_fill_meta_set_prim_size (surface, meta, prim_size);
+	}
+#endif /* ENABLE_PATH_CACHE */
+    }
+
+#endif /* !FILL_WITH_COGL_PATH */
+
+    pipeline = get_source_mask_operator_destination_pipeline (NULL, source,
+							      op, surface, &extents);
+    if (!pipeline)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_cogl_maybe_log_clip (surface, &extents);
+
+#ifndef FILL_WITH_COGL_PATH
+    _cairo_cogl_journal_log_primitive (surface, pipeline, prim, transform);
+    /* The journal will take a reference on the prim */
+    if (new_prim)
+	cogl_object_unref (prim);
+#else
+    CoglPath * cogl_path = _cairo_cogl_util_path_from_cairo (path, fill_rule, tolerance);
+    _cairo_cogl_journal_log_path (surface, pipeline, cogl_path);
+    cogl_object_unref (cogl_path);
+#endif
+
+    /* The journal will take a reference on the pipeline... */
+    cogl_object_unref (pipeline);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_cogl_surface_fill_rectangle (void		     *abstract_surface,
+				    cairo_operator_t	      op,
+				    const cairo_pattern_t    *source,
+				    double		      x,
+				    double		      y,
+				    double		      width,
+				    double		      height,
+				    cairo_matrix_t	     *ctm,
+				    const cairo_clip_t	     *clip)
+{
+    cairo_cogl_surface_t *surface = abstract_surface;
+    CoglPipeline *pipeline;
+
+    if (! is_operator_supported (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* FIXME - support unbounded operators */
+    if (!_cairo_operator_bounded_by_mask (op)) {
+	/* Currently IN this is the only unbounded operator we aim to support
+	 * in cairo-cogl. */
+	assert (op == CAIRO_OPERATOR_IN);
+	g_warning ("FIXME: handle filling with unbounded operators!");
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* FIXME */
+#if 0
+    status = _cairo_composite_rectangles_init_for_fill_rectangle (&extents,
+								  &surface->base,
+								  op, source, path,
+								  clip);
+    if (unlikely (status))
+	return status;
+#endif
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	double x1 = x;
+	double y1 = y;
+	double x2 = x1 + width;
+	double y2 = y1 + height;
+
+	pipeline = get_source_mask_operator_destination_pipeline (NULL, source,
+								  op, surface, NULL);
+	if (!pipeline)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	_cairo_cogl_log_clip (surface, clip);
+
+	_cairo_cogl_journal_log_rectangle (surface,
+					   pipeline,
+					   x1, y1, x2, y2,
+					   0,
+					   ctm);
+	return CAIRO_INT_STATUS_SUCCESS;
+    } else
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* TODO:
+     * We need to acquire the textures here, look at the corresponding
+     * attributes and see if this can be trivially handled by logging
+     * a textured rectangle only needing simple scaling or translation
+     * of texture coordinates.
+     *
+     * At this point we should also aim to remap the default
+     * EXTEND_NONE mode to EXTEND_PAD which is more efficient if we
+     * know it makes no difference either way since we can map that to
+     * CLAMP_TO_EDGE.
+     */
+}
+
+static cairo_int_status_t
+_cairo_cogl_surface_show_glyphs (void			*surface,
+                                 cairo_operator_t        op,
+                                 const cairo_pattern_t	*source,
+                                 cairo_glyph_t          *glyphs,
+                                 int                     num_glyphs,
+                                 cairo_scaled_font_t	*scaled_font,
+                                 const cairo_clip_t     *clip)
+{
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+const cairo_surface_backend_t _cairo_cogl_surface_backend = {
+    CAIRO_SURFACE_TYPE_COGL,
+    _cairo_cogl_surface_finish,
+#ifdef NEED_COGL_CONTEXT
+    _cairo_cogl_context_create,
+#else
+    _cairo_default_context_create,
+#endif
+
+    _cairo_cogl_surface_create_similar,
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    _cairo_cogl_surface_acquire_source_image,
+    _cairo_cogl_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_cogl_surface_get_extents,
+    NULL, /* get_font_options */
+
+    _cairo_cogl_surface_flush, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_cogl_surface_paint,
+    _cairo_cogl_surface_mask,
+    _cairo_cogl_surface_stroke,
+    _cairo_cogl_surface_fill,
+    NULL, /* fill_stroke*/
+    _cairo_surface_fallback_glyphs,
+};
+
+static cairo_surface_t *
+_cairo_cogl_surface_create_full (cairo_cogl_device_t *dev,
+				 cairo_bool_t ignore_alpha,
+				 CoglFramebuffer *framebuffer,
+				 CoglTexture *texture)
+{
+    cairo_cogl_surface_t *surface;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&dev->base);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    surface = _cairo_malloc (sizeof (cairo_cogl_surface_t));
+    if (unlikely (surface == NULL))
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface->ignore_alpha = ignore_alpha;
+
+    surface->framebuffer = framebuffer;
+    if (framebuffer) {
+	surface->width = cogl_framebuffer_get_width (framebuffer);
+	surface->height = cogl_framebuffer_get_height (framebuffer);
+	surface->cogl_format = cogl_framebuffer_get_color_format (framebuffer);
+	cogl_object_ref (framebuffer);
+    }
+
+    /* FIXME: If texture == NULL and we are given an offscreen framebuffer
+     * then we want a way to poke inside the framebuffer to get a texture */
+    surface->texture = texture;
+    if (texture) {
+	if (!framebuffer) {
+	    surface->width = cogl_texture_get_width (texture);
+	    surface->height = cogl_texture_get_height (texture);
+	    surface->cogl_format = cogl_texture_get_format (texture);
+	}
+	cogl_object_ref (texture);
+    }
+
+    assert(surface->width && surface->height);
+
+    surface->journal = NULL;
+
+    surface->buffer_stack = NULL;
+    surface->buffer_stack_size = 4096;
+
+    surface->last_clip = NULL;
+
+    surface->n_clip_updates_per_frame = 0;
+
+    _cairo_surface_init (&surface->base,
+                         &_cairo_cogl_surface_backend,
+                         &dev->base,
+                         CAIRO_CONTENT_COLOR_ALPHA,
+			 FALSE); /* is_vector */
+
+    return &surface->base;
+}
+
+cairo_surface_t *
+cairo_cogl_surface_create (cairo_device_t  *abstract_device,
+			   CoglFramebuffer *framebuffer)
+{
+    cairo_cogl_device_t *dev = (cairo_cogl_device_t *)abstract_device;
+
+    if (abstract_device == NULL)
+	return _cairo_surface_create_in_error (CAIRO_STATUS_DEVICE_ERROR);
+
+    if (abstract_device->status)
+	return _cairo_surface_create_in_error (abstract_device->status);
+
+    if (abstract_device->backend->type != CAIRO_DEVICE_TYPE_COGL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+    return _cairo_cogl_surface_create_full (dev, FALSE, framebuffer, NULL);
+}
+slim_hidden_def (cairo_cogl_surface_create);
+
+CoglFramebuffer *
+cairo_cogl_surface_get_framebuffer (cairo_surface_t *abstract_surface)
+{
+    cairo_cogl_surface_t *surface;
+
+    if (abstract_surface->backend != &_cairo_cogl_surface_backend) {
+        _cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+        return NULL;
+    }
+
+    surface = (cairo_cogl_surface_t *) abstract_surface;
+
+    return surface->framebuffer;
+}
+slim_hidden_def (cairo_cogl_surface_get_framebuffer);
+
+CoglTexture *
+cairo_cogl_surface_get_texture (cairo_surface_t *abstract_surface)
+{
+    cairo_cogl_surface_t *surface;
+
+    if (abstract_surface->backend != &_cairo_cogl_surface_backend) {
+        _cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+        return NULL;
+    }
+
+    surface = (cairo_cogl_surface_t *) abstract_surface;
+
+    return surface->texture;
+}
+slim_hidden_def (cairo_cogl_surface_get_texture);
+
+static cairo_status_t
+_cairo_cogl_device_flush (void *device)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (device);
+    if (unlikely (status))
+	return status;
+
+    /* XXX: we don't need to flush Cogl here, we just need to flush
+     * any batching we do of compositing primitives. */
+
+    cairo_device_release (device);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_cogl_device_finish (void *device)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (device);
+    if (unlikely (status))
+	return;
+
+    /* XXX: Drop references to external resources */
+
+    cairo_device_release (device);
+}
+
+static void
+_cairo_cogl_device_destroy (void *device)
+{
+    cairo_cogl_device_t *dev = device;
+
+    /* FIXME: Free stuff! */
+
+    g_free (dev);
+}
+
+static const cairo_device_backend_t _cairo_cogl_device_backend = {
+    CAIRO_DEVICE_TYPE_COGL,
+
+    NULL, /* lock */
+    NULL, /* unlock */
+
+    _cairo_cogl_device_flush,
+    _cairo_cogl_device_finish,
+    _cairo_cogl_device_destroy,
+};
+
+static cairo_bool_t
+set_blend (CoglPipeline *pipeline, const char *blend_string)
+{
+    GError *error = NULL;
+    if (!cogl_pipeline_set_blend (pipeline, blend_string, &error)) {
+	g_warning ("Unsupported blend string with current gpu/driver: %s", blend_string);
+	g_error_free (error);
+	return FALSE;
+    }
+    return TRUE;
+}
+
+static cairo_bool_t
+_cairo_cogl_setup_op_state (CoglPipeline *pipeline, cairo_operator_t op)
+{
+    cairo_bool_t status = FALSE;
+
+    switch ((int)op)
+    {
+    case CAIRO_OPERATOR_SOURCE:
+	status = set_blend (pipeline, "RGBA = ADD (SRC_COLOR, 0)");
+	break;
+    case CAIRO_OPERATOR_OVER:
+	status = set_blend (pipeline, "RGBA = ADD (SRC_COLOR, DST_COLOR * (1 - SRC_COLOR[A]))");
+	break;
+    case CAIRO_OPERATOR_IN:
+	status = set_blend (pipeline, "RGBA = ADD (SRC_COLOR * DST_COLOR[A], 0)");
+	break;
+    case CAIRO_OPERATOR_DEST_OVER:
+	status = set_blend (pipeline, "RGBA = ADD (SRC_COLOR * (1 - DST_COLOR[A]), DST_COLOR)");
+	break;
+    case CAIRO_OPERATOR_DEST_IN:
+	status = set_blend (pipeline, "RGBA = ADD (0, DST_COLOR * SRC_COLOR[A])");
+	break;
+    case CAIRO_OPERATOR_ADD:
+	status = set_blend (pipeline, "RGBA = ADD (SRC_COLOR, DST_COLOR)");
+	break;
+    }
+
+    return status;
+}
+
+static void
+create_templates_for_op (cairo_cogl_device_t *dev, cairo_operator_t op)
+{
+    CoglPipeline *base = cogl_pipeline_new ();
+    CoglPipeline *pipeline;
+    CoglColor color;
+
+    if (!_cairo_cogl_setup_op_state (base, op)) {
+	cogl_object_unref (base);
+	return;
+    }
+
+    dev->template_pipelines[op][CAIRO_COGL_TEMPLATE_TYPE_SOLID] = base;
+
+    pipeline = cogl_pipeline_copy (base);
+    cogl_pipeline_set_layer_texture (pipeline, 0, dev->dummy_texture);
+    dev->template_pipelines[op][CAIRO_COGL_TEMPLATE_TYPE_TEXTURE] = pipeline;
+
+    pipeline = cogl_pipeline_copy (base);
+    cogl_pipeline_set_layer_combine (pipeline, 1,
+                                     "RGBA = MODULATE (PREVIOUS, CONSTANT[A])",
+                                     NULL);
+    cogl_pipeline_set_layer_combine_constant (pipeline, 1, &color);
+    cogl_pipeline_set_layer_texture (pipeline, 1, dev->dummy_texture);
+    dev->template_pipelines[op][CAIRO_COGL_TEMPLATE_TYPE_MASK_SOLID] = pipeline;
+
+    pipeline = cogl_pipeline_copy (base);
+    cogl_pipeline_set_layer_combine (pipeline, 1,
+                                     "RGBA = MODULATE (PREVIOUS, TEXTURE[A])",
+                                     NULL);
+    cogl_pipeline_set_layer_texture (pipeline, 1, dev->dummy_texture);
+    dev->template_pipelines[op][CAIRO_COGL_TEMPLATE_TYPE_MASK_TEXTURE] = pipeline;
+}
+
+cairo_device_t *
+cairo_cogl_device_create (CoglContext *cogl_context)
+{
+    cairo_cogl_device_t *dev = g_new0 (cairo_cogl_device_t, 1);
+    cairo_status_t status;
+
+    dev->backend_vtable_initialized = FALSE;
+
+    dev->cogl_context = cogl_context;
+
+    dev->dummy_texture = cogl_texture_new_with_size (1, 1,
+						     COGL_TEXTURE_NO_SLICING,
+						     COGL_PIXEL_FORMAT_ANY);
+    if (!dev->dummy_texture)
+	goto ERROR;
+
+    memset (dev->template_pipelines, 0, sizeof (dev->template_pipelines));
+    create_templates_for_op (dev, CAIRO_OPERATOR_SOURCE);
+    create_templates_for_op (dev, CAIRO_OPERATOR_OVER);
+    create_templates_for_op (dev, CAIRO_OPERATOR_IN);
+    create_templates_for_op (dev, CAIRO_OPERATOR_DEST_OVER);
+    create_templates_for_op (dev, CAIRO_OPERATOR_DEST_IN);
+    create_templates_for_op (dev, CAIRO_OPERATOR_ADD);
+
+    status = _cairo_cache_init (&dev->linear_cache,
+                                _cairo_cogl_linear_gradient_equal,
+                                NULL,
+                                (cairo_destroy_func_t) _cairo_cogl_linear_gradient_destroy,
+                                CAIRO_COGL_LINEAR_GRADIENT_CACHE_SIZE);
+    if (unlikely (status))
+	return _cairo_device_create_in_error(status);
+
+    status = _cairo_cache_init (&dev->path_fill_staging_cache,
+                                _cairo_cogl_path_fill_meta_equal,
+                                NULL,
+                                (cairo_destroy_func_t) _cairo_cogl_path_fill_meta_destroy,
+                                1000);
+
+    status = _cairo_cache_init (&dev->path_stroke_staging_cache,
+                                _cairo_cogl_path_stroke_meta_equal,
+                                NULL,
+                                (cairo_destroy_func_t) _cairo_cogl_path_stroke_meta_destroy,
+                                1000);
+
+    status = _cairo_cache_init (&dev->path_fill_prim_cache,
+                                _cairo_cogl_path_fill_meta_equal,
+                                NULL,
+                                (cairo_destroy_func_t) _cairo_cogl_path_fill_meta_destroy,
+                                CAIRO_COGL_PATH_META_CACHE_SIZE);
+
+    status = _cairo_cache_init (&dev->path_stroke_prim_cache,
+                                _cairo_cogl_path_stroke_meta_equal,
+                                NULL,
+                                (cairo_destroy_func_t) _cairo_cogl_path_stroke_meta_destroy,
+                                CAIRO_COGL_PATH_META_CACHE_SIZE);
+
+    _cairo_device_init (&dev->base, &_cairo_cogl_device_backend);
+    return &dev->base;
+
+ERROR:
+    g_free (dev);
+    return _cairo_device_create_in_error (CAIRO_STATUS_DEVICE_ERROR);
+}
+slim_hidden_def (cairo_cogl_device_create);
+
+void
+cairo_cogl_surface_end_frame (cairo_surface_t *abstract_surface)
+{
+    cairo_cogl_surface_t *surface = (cairo_cogl_surface_t *)abstract_surface;
+    cairo_surface_flush (abstract_surface);
+
+    //g_print ("n_clip_update_per_frame = %d\n", surface->n_clip_updates_per_frame);
+    surface->n_clip_updates_per_frame = 0;
+}
+slim_hidden_def (cairo_cogl_surface_end_frame);
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-utils-private.h b/libs/cairo-1.16.0/src/cairo-cogl-utils-private.h
new file mode 100644
index 0000000..ee77f30
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-utils-private.h
@@ -0,0 +1,54 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+#ifndef CAIRO_COGL_UTILS_PRIVATE_H
+#define CAIRO_COGL_UTILS_PRIVATE_H
+
+#include "cairo-path-fixed-private.h"
+#include <cogl/cogl2-experimental.h>
+
+CoglPath *
+_cairo_cogl_util_path_from_cairo (const cairo_path_fixed_t *path,
+				  cairo_fill_rule_t fill_rule,
+				  float tolerance);
+
+int
+_cairo_cogl_util_next_p2 (int a);
+
+#define CAIRO_FIXED_ONE_FLOAT ((float)(1 << CAIRO_FIXED_FRAC_BITS))
+
+static inline float
+_cairo_cogl_util_fixed_to_float (cairo_fixed_t f)
+{
+    return ((float) f) / CAIRO_FIXED_ONE_FLOAT;
+}
+
+#endif /* CAIRO_COGL_UTILS_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-cogl-utils.c b/libs/cairo-1.16.0/src/cairo-cogl-utils.c
new file mode 100644
index 0000000..4f02aaa
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl-utils.c
@@ -0,0 +1,126 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-cogl-utils-private.h"
+
+#include <cogl/cogl.h>
+#include <glib.h>
+
+static cairo_status_t
+_cogl_move_to (void		   *closure,
+	       const cairo_point_t *point)
+{
+    cogl_path_move_to (closure,
+		       _cairo_cogl_util_fixed_to_float (point->x),
+		       _cairo_cogl_util_fixed_to_float (point->y));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cogl_line_to (void		   *closure,
+	       const cairo_point_t *point)
+{
+    cogl_path_line_to (closure,
+		       _cairo_cogl_util_fixed_to_float (point->x),
+		       _cairo_cogl_util_fixed_to_float (point->y));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cogl_curve_to (void                *closure,
+		const cairo_point_t *p0,
+		const cairo_point_t *p1,
+		const cairo_point_t *p2)
+{
+    cogl_path_curve_to (closure,
+			_cairo_cogl_util_fixed_to_float (p0->x),
+			_cairo_cogl_util_fixed_to_float (p0->y),
+			_cairo_cogl_util_fixed_to_float (p1->x),
+			_cairo_cogl_util_fixed_to_float (p1->y),
+			_cairo_cogl_util_fixed_to_float (p2->x),
+			_cairo_cogl_util_fixed_to_float (p2->y));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cogl_close_path (void *closure)
+{
+    cogl_path_close (closure);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+CoglPath *
+_cairo_cogl_util_path_from_cairo (const cairo_path_fixed_t *path,
+				  cairo_fill_rule_t fill_rule,
+				  float tolerance)
+{
+    CoglPath *cogl_path = cogl_path_new ();
+    cairo_status_t status;
+
+    if (fill_rule == CAIRO_FILL_RULE_EVEN_ODD)
+	cogl_path_set_fill_rule (cogl_path, COGL_PATH_FILL_RULE_EVEN_ODD);
+    else
+	cogl_path_set_fill_rule (cogl_path, COGL_PATH_FILL_RULE_NON_ZERO);
+
+#ifdef USE_CAIRO_PATH_FLATTENER
+    /* XXX: rely on cairo to do path flattening, since it seems Cogl's
+     * curve_to flattening is much slower */
+    status = _cairo_path_fixed_interpret_flat (path,
+					       _cogl_move_to,
+					       _cogl_line_to,
+					       _cogl_close_path,
+					       cogl_path,
+					       tolerance);
+#else
+    status = _cairo_path_fixed_interpret (path,
+					  _cogl_move_to,
+					  _cogl_line_to,
+					  _cogl_curve_to,
+					  _cogl_close_path,
+					  cogl_path);
+#endif
+
+    assert (status == CAIRO_STATUS_SUCCESS);
+    return cogl_path;
+}
+
+int
+_cairo_cogl_util_next_p2 (int a)
+{
+  int rval = 1;
+
+  while (rval < a)
+    rval <<= 1;
+
+  return rval;
+}
+
diff --git a/libs/cairo-1.16.0/src/cairo-cogl.h b/libs/cairo-1.16.0/src/cairo-cogl.h
new file mode 100644
index 0000000..f270d74
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-cogl.h
@@ -0,0 +1,69 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Corporation.
+ *
+ * Contributor(s):
+ *      Robert Bragg <robert@linux.intel.com>
+ */
+
+#ifndef CAIRO_VG_H
+#define CAIRO_VG_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_COGL_SURFACE
+
+#include <cogl/cogl2-experimental.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_device_t *
+cairo_cogl_device_create (CoglContext *context);
+
+cairo_public cairo_surface_t *
+cairo_cogl_surface_create (cairo_device_t *device,
+			   CoglFramebuffer *framebuffer);
+
+cairo_public CoglFramebuffer *
+cairo_cogl_surface_get_framebuffer (cairo_surface_t *surface);
+
+cairo_public CoglTexture *
+cairo_cogl_surface_get_texture (cairo_surface_t *surface);
+
+cairo_public void
+cairo_cogl_surface_end_frame (cairo_surface_t *surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_COGL_SURFACE*/
+# error Cairo was not compiled with support for the Cogl backend
+#endif /* CAIRO_HAS_COGL_SURFACE*/
+
+#endif /* CAIRO_COGL_H */
diff --git a/libs/cairo-1.16.0/src/cairo-color.c b/libs/cairo-1.16.0/src/cairo-color.c
new file mode 100644
index 0000000..c2a11a1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-color.c
@@ -0,0 +1,193 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+static cairo_color_t const cairo_color_white = {
+    1.0,    1.0,    1.0,    1.0,
+    0xffff, 0xffff, 0xffff, 0xffff
+};
+
+static cairo_color_t const cairo_color_black = {
+    0.0, 0.0, 0.0, 1.0,
+    0x0, 0x0, 0x0, 0xffff
+};
+
+static cairo_color_t const cairo_color_transparent = {
+    0.0, 0.0, 0.0, 0.0,
+    0x0, 0x0, 0x0, 0x0
+};
+
+static cairo_color_t const cairo_color_magenta = {
+    1.0,    0.0, 1.0,    1.0,
+    0xffff, 0x0, 0xffff, 0xffff
+};
+
+const cairo_color_t *
+_cairo_stock_color (cairo_stock_t stock)
+{
+    switch (stock) {
+    case CAIRO_STOCK_WHITE:
+	return &cairo_color_white;
+    case CAIRO_STOCK_BLACK:
+	return &cairo_color_black;
+    case CAIRO_STOCK_TRANSPARENT:
+	return &cairo_color_transparent;
+
+    case CAIRO_STOCK_NUM_COLORS:
+    default:
+	ASSERT_NOT_REACHED;
+	/* If the user can get here somehow, give a color that indicates a
+	 * problem. */
+	return &cairo_color_magenta;
+    }
+}
+
+/* Convert a double in [0.0, 1.0] to an integer in [0, 65535]
+ * The conversion is designed to choose the integer i such that
+ * i / 65535.0 is as close as possible to the input value.
+ */
+uint16_t
+_cairo_color_double_to_short (double d)
+{
+    return d * 65535.0 + 0.5;
+}
+
+static void
+_cairo_color_compute_shorts (cairo_color_t *color)
+{
+    color->red_short   = _cairo_color_double_to_short (color->red   * color->alpha);
+    color->green_short = _cairo_color_double_to_short (color->green * color->alpha);
+    color->blue_short  = _cairo_color_double_to_short (color->blue  * color->alpha);
+    color->alpha_short = _cairo_color_double_to_short (color->alpha);
+}
+
+void
+_cairo_color_init_rgba (cairo_color_t *color,
+			double red, double green, double blue,
+			double alpha)
+{
+    color->red   = red;
+    color->green = green;
+    color->blue  = blue;
+    color->alpha = alpha;
+
+    _cairo_color_compute_shorts (color);
+}
+
+void
+_cairo_color_multiply_alpha (cairo_color_t *color,
+			     double	    alpha)
+{
+    color->alpha *= alpha;
+
+    _cairo_color_compute_shorts (color);
+}
+
+void
+_cairo_color_get_rgba (cairo_color_t *color,
+		       double	     *red,
+		       double	     *green,
+		       double	     *blue,
+		       double	     *alpha)
+{
+    *red   = color->red;
+    *green = color->green;
+    *blue  = color->blue;
+    *alpha = color->alpha;
+}
+
+void
+_cairo_color_get_rgba_premultiplied (cairo_color_t *color,
+				     double	   *red,
+				     double	   *green,
+				     double	   *blue,
+				     double	   *alpha)
+{
+    *red   = color->red   * color->alpha;
+    *green = color->green * color->alpha;
+    *blue  = color->blue  * color->alpha;
+    *alpha = color->alpha;
+}
+
+/* NB: This function works both for unmultiplied and premultiplied colors */
+cairo_bool_t
+_cairo_color_equal (const cairo_color_t *color_a,
+	            const cairo_color_t *color_b)
+{
+    if (color_a == color_b)
+	return TRUE;
+
+    if (color_a->alpha_short != color_b->alpha_short)
+        return FALSE;
+
+    if (color_a->alpha_short == 0)
+        return TRUE;
+
+    return color_a->red_short   == color_b->red_short   &&
+           color_a->green_short == color_b->green_short &&
+           color_a->blue_short  == color_b->blue_short;
+}
+
+cairo_bool_t
+_cairo_color_stop_equal (const cairo_color_stop_t *color_a,
+			 const cairo_color_stop_t *color_b)
+{
+    if (color_a == color_b)
+	return TRUE;
+
+    return color_a->alpha_short == color_b->alpha_short &&
+           color_a->red_short   == color_b->red_short   &&
+           color_a->green_short == color_b->green_short &&
+           color_a->blue_short  == color_b->blue_short;
+}
+
+cairo_content_t
+_cairo_color_get_content (const cairo_color_t *color)
+{
+    if (CAIRO_COLOR_IS_OPAQUE (color))
+        return CAIRO_CONTENT_COLOR;
+
+    if (color->red_short == 0 &&
+	color->green_short == 0 &&
+	color->blue_short == 0)
+    {
+        return CAIRO_CONTENT_ALPHA;
+    }
+
+    return CAIRO_CONTENT_COLOR_ALPHA;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-combsort-inline.h b/libs/cairo-1.16.0/src/cairo-combsort-inline.h
new file mode 100644
index 0000000..d359fae
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-combsort-inline.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* This fragment implements a comb sort (specifically combsort11) */
+#ifndef _HAVE_CAIRO_COMBSORT_NEWGAP
+#define _HAVE_CAIRO_COMBSORT_NEWGAP
+static inline unsigned int
+_cairo_combsort_newgap (unsigned int gap)
+{
+  gap = 10 * gap / 13;
+  if (gap == 9 || gap == 10)
+    gap = 11;
+  if (gap < 1)
+    gap = 1;
+  return gap;
+}
+#endif
+
+#define CAIRO_COMBSORT_DECLARE(NAME, TYPE, CMP) \
+static void \
+NAME (TYPE *base, unsigned int nmemb) \
+{ \
+  unsigned int gap = nmemb; \
+  unsigned int i, j; \
+  int swapped; \
+  do { \
+      gap = _cairo_combsort_newgap (gap); \
+      swapped = gap > 1; \
+      for (i = 0; i < nmemb-gap ; i++) { \
+	  j = i + gap; \
+	  if (CMP (base[i], base[j]) > 0 ) { \
+	      TYPE tmp; \
+	      tmp = base[i]; \
+	      base[i] = base[j]; \
+	      base[j] = tmp; \
+	      swapped = 1; \
+	  } \
+      } \
+  } while (swapped); \
+}
+
+#define CAIRO_COMBSORT_DECLARE_WITH_DATA(NAME, TYPE, CMP) \
+static void \
+NAME (TYPE *base, unsigned int nmemb, void *data) \
+{ \
+  unsigned int gap = nmemb; \
+  unsigned int i, j; \
+  int swapped; \
+  do { \
+      gap = _cairo_combsort_newgap (gap); \
+      swapped = gap > 1; \
+      for (i = 0; i < nmemb-gap ; i++) { \
+	  j = i + gap; \
+	  if (CMP (base[i], base[j], data) > 0 ) { \
+	      TYPE tmp; \
+	      tmp = base[i]; \
+	      base[i] = base[j]; \
+	      base[j] = tmp; \
+	      swapped = 1; \
+	  } \
+      } \
+  } while (swapped); \
+}
diff --git a/libs/cairo-1.16.0/src/cairo-compiler-private.h b/libs/cairo-1.16.0/src/cairo-compiler-private.h
new file mode 100644
index 0000000..d982c10
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-compiler-private.h
@@ -0,0 +1,244 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_COMPILER_PRIVATE_H
+#define CAIRO_COMPILER_PRIVATE_H
+
+#include "cairo.h"
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Size in bytes of buffer to use off the stack per functions.
+ * Mostly used by text functions.  For larger allocations, they'll
+ * malloc(). */
+#ifndef CAIRO_STACK_BUFFER_SIZE
+#define CAIRO_STACK_BUFFER_SIZE (512 * sizeof (int))
+#endif
+
+#define CAIRO_STACK_ARRAY_LENGTH(T) (CAIRO_STACK_BUFFER_SIZE / sizeof(T))
+
+/*
+ * The goal of this block is to define the following macros for
+ * providing faster linkage to functions in the public API for calls
+ * from within cairo.
+ *
+ * slim_hidden_proto(f)
+ * slim_hidden_proto_no_warn(f)
+ *
+ *   Declares `f' as a library internal function and hides the
+ *   function from the global symbol table.  This macro must be
+ *   expanded after `f' has been declared with a prototype but before
+ *   any calls to the function are seen by the compiler.  The no_warn
+ *   variant inhibits warnings about the return value being unused at
+ *   call sites.  The macro works by renaming `f' to an internal name
+ *   in the symbol table and hiding that.  As far as cairo internal
+ *   calls are concerned they're calling a library internal function
+ *   and thus don't need to bounce via the procedure linkage table (PLT).
+ *
+ * slim_hidden_def(f)
+ *
+ *   Exports `f' back to the global symbol table.  This macro must be
+ *   expanded right after the function definition and only for symbols
+ *   hidden previously with slim_hidden_proto().  The macro works by
+ *   adding a global entry to the symbol table which points at the
+ *   internal name of `f' created by slim_hidden_proto().
+ *
+ * Functions in the public API which aren't called by the library
+ * don't need to be hidden and re-exported using the slim hidden
+ * macros.
+ */
+#if __GNUC__ >= 3 && defined(__ELF__) && !defined(__sun)
+# define slim_hidden_proto(name)		slim_hidden_proto1(name, slim_hidden_int_name(name)) cairo_private
+# define slim_hidden_proto_no_warn(name)	slim_hidden_proto1(name, slim_hidden_int_name(name)) cairo_private_no_warn
+# define slim_hidden_def(name)			slim_hidden_def1(name, slim_hidden_int_name(name))
+# define slim_hidden_int_name(name) INT_##name
+# define slim_hidden_proto1(name, internal)				\
+  extern __typeof (name) name						\
+	__asm__ (slim_hidden_asmname (internal))
+# define slim_hidden_def1(name, internal)				\
+  extern __typeof (name) EXT_##name __asm__(slim_hidden_asmname(name))	\
+	__attribute__((__alias__(slim_hidden_asmname(internal))))
+# define slim_hidden_ulp		slim_hidden_ulp1(__USER_LABEL_PREFIX__)
+# define slim_hidden_ulp1(x)		slim_hidden_ulp2(x)
+# define slim_hidden_ulp2(x)		#x
+# define slim_hidden_asmname(name)	slim_hidden_asmname1(name)
+# define slim_hidden_asmname1(name)	slim_hidden_ulp #name
+#else
+# define slim_hidden_proto(name)		int _cairo_dummy_prototype(void)
+# define slim_hidden_proto_no_warn(name)	int _cairo_dummy_prototype(void)
+# define slim_hidden_def(name)			int _cairo_dummy_prototype(void)
+#endif
+
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
+#define CAIRO_PRINTF_FORMAT(fmt_index, va_index) \
+	__attribute__((__format__(__printf__, fmt_index, va_index)))
+#else
+#define CAIRO_PRINTF_FORMAT(fmt_index, va_index)
+#endif
+
+/* slim_internal.h */
+#define CAIRO_HAS_HIDDEN_SYMBOLS 1
+#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)) && \
+    (defined(__ELF__) || defined(__APPLE__)) &&			\
+    !defined(__sun)
+#define cairo_private_no_warn	__attribute__((__visibility__("hidden")))
+#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
+#define cairo_private_no_warn	__hidden
+#else /* not gcc >= 3.3 and not Sun Studio >= 8 */
+#define cairo_private_no_warn
+#undef CAIRO_HAS_HIDDEN_SYMBOLS
+#endif
+
+#ifndef WARN_UNUSED_RESULT
+#define WARN_UNUSED_RESULT
+#endif
+/* Add attribute(warn_unused_result) if supported */
+#define cairo_warn	    WARN_UNUSED_RESULT
+#define cairo_private	    cairo_private_no_warn cairo_warn
+
+/* This macro allow us to deprecate a function by providing an alias
+   for the old function name to the new function name. With this
+   macro, binary compatibility is preserved. The macro only works on
+   some platforms --- tough.
+
+   Meanwhile, new definitions in the public header file break the
+   source code so that it will no longer link against the old
+   symbols. Instead it will give a descriptive error message
+   indicating that the old function has been deprecated by the new
+   function.
+*/
+#if __GNUC__ >= 2 && defined(__ELF__)
+# define CAIRO_FUNCTION_ALIAS(old, new)		\
+	extern __typeof (new) old		\
+	__asm__ ("" #old)			\
+	__attribute__((__alias__("" #new)))
+#else
+# define CAIRO_FUNCTION_ALIAS(old, new)
+#endif
+
+/*
+ * Cairo uses the following function attributes in order to improve the
+ * generated code (effectively by manual inter-procedural analysis).
+ *
+ *   'cairo_pure': The function is only allowed to read from its arguments
+ *                 and global memory (i.e. following a pointer argument or
+ *                 accessing a shared variable). The return value should
+ *                 only depend on its arguments, and for an identical set of
+ *                 arguments should return the same value.
+ *
+ *   'cairo_const': The function is only allowed to read from its arguments.
+ *                  It is not allowed to access global memory. The return
+ *                  value should only depend its arguments, and for an
+ *                  identical set of arguments should return the same value.
+ *                  This is currently the most strict function attribute.
+ *
+ * Both these function attributes allow gcc to perform CSE and
+ * constant-folding, with 'cairo_const 'also guaranteeing that pointer contents
+ * do not change across the function call.
+ */
+#if __GNUC__ >= 3
+#define cairo_pure __attribute__((pure))
+#define cairo_const __attribute__((const))
+#define cairo_always_inline inline __attribute__((always_inline))
+#else
+#define cairo_pure
+#define cairo_const
+#define cairo_always_inline inline
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
+#define likely(expr) (__builtin_expect (!!(expr), 1))
+#define unlikely(expr) (__builtin_expect (!!(expr), 0))
+#else
+#define likely(expr) (expr)
+#define unlikely(expr) (expr)
+#endif
+
+#ifndef __GNUC__
+#undef __attribute__
+#define __attribute__(x)
+#endif
+
+#if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
+#define access _access
+#define fdopen _fdopen
+#define hypot _hypot
+#define pclose _pclose
+#define popen _popen
+#define snprintf _snprintf
+#define strdup _strdup
+#define unlink _unlink
+#define vsnprintf _vsnprintf
+#endif
+
+#ifdef _MSC_VER
+#ifndef __cplusplus
+#undef inline
+#define inline __inline
+#endif
+#endif
+
+#if defined(_MSC_VER) && defined(_M_IX86)
+/* When compiling with /Gy and /OPT:ICF identical functions will be folded in together.
+   The CAIRO_ENSURE_UNIQUE macro ensures that a function is always unique and
+   will never be folded into another one. Something like this might eventually
+   be needed for GCC but it seems fine for now. */
+#define CAIRO_ENSURE_UNIQUE                       \
+    do {                                          \
+	char file[] = __FILE__;                   \
+	__asm {                                   \
+	    __asm jmp __internal_skip_line_no     \
+	    __asm _emit (__COUNTER__ & 0xff)      \
+	    __asm _emit ((__COUNTER__>>8) & 0xff) \
+	    __asm _emit ((__COUNTER__>>16) & 0xff)\
+	    __asm _emit ((__COUNTER__>>24) & 0xff)\
+	    __asm lea eax, dword ptr file         \
+	    __asm __internal_skip_line_no:        \
+	};                                        \
+    } while (0)
+#else
+#define CAIRO_ENSURE_UNIQUE    do { } while (0)
+#endif
+
+#ifdef __STRICT_ANSI__
+#undef inline
+#define inline __inline__
+#endif
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-composite-rectangles-private.h b/libs/cairo-1.16.0/src/cairo-composite-rectangles-private.h
new file mode 100644
index 0000000..fd77289
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-composite-rectangles-private.h
@@ -0,0 +1,159 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.u>
+ */
+
+#ifndef CAIRO_COMPOSITE_RECTANGLES_PRIVATE_H
+#define CAIRO_COMPOSITE_RECTANGLES_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-error-private.h"
+#include "cairo-pattern-private.h"
+
+CAIRO_BEGIN_DECLS
+
+/* Rectangles that take part in a composite operation.
+ *
+ * The source and mask track the extents of the respective patterns in device
+ * space. The unbounded rectangle is essentially the clip rectangle. And the
+ * intersection of all is the bounded rectangle, which is the minimum extents
+ * the operation may require. Whether or not the operation is actually bounded
+ * is tracked in the is_bounded boolean.
+ *
+ */
+struct _cairo_composite_rectangles {
+    cairo_surface_t *surface;
+    cairo_operator_t op;
+
+    cairo_rectangle_int_t source;
+    cairo_rectangle_int_t mask;
+    cairo_rectangle_int_t destination;
+
+    cairo_rectangle_int_t bounded; /* source? IN mask? IN unbounded */
+    cairo_rectangle_int_t unbounded; /* destination IN clip */
+    uint32_t is_bounded;
+
+    cairo_rectangle_int_t source_sample_area;
+    cairo_rectangle_int_t mask_sample_area;
+
+    cairo_pattern_union_t source_pattern;
+    cairo_pattern_union_t mask_pattern;
+    const cairo_pattern_t *original_source_pattern;
+    const cairo_pattern_t *original_mask_pattern;
+
+    cairo_clip_t *clip; /* clip will be reduced to the minimal container */
+};
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_paint (cairo_composite_rectangles_t *extents,
+					    cairo_surface_t *surface,
+					    cairo_operator_t	 op,
+					    const cairo_pattern_t	*source,
+					    const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_mask (cairo_composite_rectangles_t *extents,
+					   cairo_surface_t *surface,
+					   cairo_operator_t	 op,
+					   const cairo_pattern_t	*source,
+					   const cairo_pattern_t	*mask,
+					   const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_stroke (cairo_composite_rectangles_t *extents,
+					     cairo_surface_t *surface,
+					     cairo_operator_t	 op,
+					     const cairo_pattern_t	*source,
+					     const cairo_path_fixed_t	*path,
+					     const cairo_stroke_style_t	*style,
+					     const cairo_matrix_t	*ctm,
+					     const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_fill (cairo_composite_rectangles_t *extents,
+					   cairo_surface_t *surface,
+					   cairo_operator_t	 op,
+					   const cairo_pattern_t	*source,
+					   const cairo_path_fixed_t	*path,
+					   const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_boxes (cairo_composite_rectangles_t *extents,
+					      cairo_surface_t		*surface,
+					      cairo_operator_t		 op,
+					      const cairo_pattern_t	*source,
+					      const cairo_boxes_t	*boxes,
+					      const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_polygon (cairo_composite_rectangles_t *extents,
+					      cairo_surface_t		*surface,
+					      cairo_operator_t		 op,
+					      const cairo_pattern_t	*source,
+					      const cairo_polygon_t	*polygon,
+					      const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_init_for_glyphs (cairo_composite_rectangles_t *extents,
+					     cairo_surface_t *surface,
+					     cairo_operator_t		 op,
+					     const cairo_pattern_t	*source,
+					     cairo_scaled_font_t	*scaled_font,
+					     cairo_glyph_t		*glyphs,
+					     int			 num_glyphs,
+					     const cairo_clip_t		*clip,
+					     cairo_bool_t		*overlap);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_intersect_source_extents (cairo_composite_rectangles_t *extents,
+						      const cairo_box_t *box);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t *extents,
+						    const cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_composite_rectangles_can_reduce_clip (cairo_composite_rectangles_t *composite,
+					     cairo_clip_t *clip);
+
+cairo_private cairo_int_status_t
+_cairo_composite_rectangles_add_to_damage (cairo_composite_rectangles_t *composite,
+					   cairo_boxes_t *damage);
+
+cairo_private void
+_cairo_composite_rectangles_fini (cairo_composite_rectangles_t *extents);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_COMPOSITE_RECTANGLES_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-composite-rectangles.c b/libs/cairo-1.16.0/src/cairo-composite-rectangles.c
new file mode 100644
index 0000000..f102edd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-composite-rectangles.c
@@ -0,0 +1,499 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-pattern-private.h"
+
+/* A collection of routines to facilitate writing compositors. */
+
+void _cairo_composite_rectangles_fini (cairo_composite_rectangles_t *extents)
+{
+    _cairo_clip_destroy (extents->clip);
+}
+
+static void
+_cairo_composite_reduce_pattern (const cairo_pattern_t *src,
+				 cairo_pattern_union_t *dst)
+{
+    int tx, ty;
+
+    _cairo_pattern_init_static_copy (&dst->base, src);
+    if (dst->base.type == CAIRO_PATTERN_TYPE_SOLID)
+	return;
+
+    dst->base.filter = _cairo_pattern_analyze_filter (&dst->base);
+
+    tx = ty = 0;
+    if (_cairo_matrix_is_pixman_translation (&dst->base.matrix,
+					     dst->base.filter,
+					     &tx, &ty))
+    {
+	dst->base.matrix.x0 = tx;
+	dst->base.matrix.y0 = ty;
+    }
+}
+
+static inline cairo_bool_t
+_cairo_composite_rectangles_init (cairo_composite_rectangles_t *extents,
+				  cairo_surface_t *surface,
+				  cairo_operator_t op,
+				  const cairo_pattern_t *source,
+				  const cairo_clip_t *clip)
+{
+    if (_cairo_clip_is_all_clipped (clip))
+	return FALSE;
+
+    extents->surface = surface;
+    extents->op = op;
+
+    _cairo_surface_get_extents (surface, &extents->destination);
+    extents->clip = NULL;
+
+    extents->unbounded = extents->destination;
+    if (clip && ! _cairo_rectangle_intersect (&extents->unbounded,
+					      _cairo_clip_get_extents (clip)))
+	return FALSE;
+
+    extents->bounded = extents->unbounded;
+    extents->is_bounded = _cairo_operator_bounded_by_either (op);
+
+    extents->original_source_pattern = source;
+    _cairo_composite_reduce_pattern (source, &extents->source_pattern);
+
+    _cairo_pattern_get_extents (&extents->source_pattern.base,
+				&extents->source,
+				surface->is_vector);
+    if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE) {
+	if (! _cairo_rectangle_intersect (&extents->bounded, &extents->source))
+	    return FALSE;
+    }
+
+    extents->original_mask_pattern = NULL;
+    extents->mask_pattern.base.type = CAIRO_PATTERN_TYPE_SOLID;
+    extents->mask_pattern.solid.color.alpha = 1.; /* XXX full initialisation? */
+    extents->mask_pattern.solid.color.alpha_short = 0xffff;
+
+    return TRUE;
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_paint (cairo_composite_rectangles_t *extents,
+					    cairo_surface_t *surface,
+					    cairo_operator_t		 op,
+					    const cairo_pattern_t	*source,
+					    const cairo_clip_t		*clip)
+{
+    if (! _cairo_composite_rectangles_init (extents,
+					    surface, op, source, clip))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    extents->mask = extents->destination;
+
+    extents->clip = _cairo_clip_reduce_for_composite (clip, extents);
+    if (_cairo_clip_is_all_clipped (extents->clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (! _cairo_rectangle_intersect (&extents->unbounded,
+				      _cairo_clip_get_extents (extents->clip)))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
+	_cairo_pattern_sampled_area (&extents->source_pattern.base,
+				     &extents->bounded,
+				     &extents->source_sample_area);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_composite_rectangles_intersect (cairo_composite_rectangles_t *extents,
+				       const cairo_clip_t *clip)
+{
+    if ((!_cairo_rectangle_intersect (&extents->bounded, &extents->mask)) &&
+        (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE)) {
+	extents->unbounded = extents->bounded;
+    } else if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) {
+	if (!_cairo_rectangle_intersect (&extents->unbounded, &extents->mask))
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    extents->clip = _cairo_clip_reduce_for_composite (clip, extents);
+    if (_cairo_clip_is_all_clipped (extents->clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (! _cairo_rectangle_intersect (&extents->unbounded,
+				      _cairo_clip_get_extents (extents->clip)))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (! _cairo_rectangle_intersect (&extents->bounded,
+				      _cairo_clip_get_extents (extents->clip)) &&
+	extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK)
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
+	_cairo_pattern_sampled_area (&extents->source_pattern.base,
+				     &extents->bounded,
+				     &extents->source_sample_area);
+    if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) {
+	_cairo_pattern_sampled_area (&extents->mask_pattern.base,
+				     &extents->bounded,
+				     &extents->mask_sample_area);
+	if (extents->mask_sample_area.width == 0 ||
+	    extents->mask_sample_area.height == 0) {
+	    _cairo_composite_rectangles_fini (extents);
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_intersect_source_extents (cairo_composite_rectangles_t *extents,
+						      const cairo_box_t *box)
+{
+    cairo_rectangle_int_t rect;
+    cairo_clip_t *clip;
+
+    _cairo_box_round_to_rectangle (box, &rect);
+    if (rect.x == extents->source.x &&
+	rect.y == extents->source.y &&
+	rect.width  == extents->source.width &&
+	rect.height == extents->source.height)
+    {
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    _cairo_rectangle_intersect (&extents->source, &rect);
+
+    rect = extents->bounded;
+    if (! _cairo_rectangle_intersect (&extents->bounded, &extents->source) &&
+	extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE)
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (rect.width  == extents->bounded.width &&
+	rect.height == extents->bounded.height)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE)) {
+	extents->unbounded = extents->bounded;
+    } else if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) {
+	if (!_cairo_rectangle_intersect (&extents->unbounded, &extents->mask))
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    clip = extents->clip;
+    extents->clip = _cairo_clip_reduce_for_composite (clip, extents);
+    if (clip != extents->clip)
+	_cairo_clip_destroy (clip);
+
+    if (_cairo_clip_is_all_clipped (extents->clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (! _cairo_rectangle_intersect (&extents->unbounded,
+				      _cairo_clip_get_extents (extents->clip)))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
+	_cairo_pattern_sampled_area (&extents->source_pattern.base,
+				     &extents->bounded,
+				     &extents->source_sample_area);
+    if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) {
+	_cairo_pattern_sampled_area (&extents->mask_pattern.base,
+				     &extents->bounded,
+				     &extents->mask_sample_area);
+	if (extents->mask_sample_area.width == 0 ||
+	    extents->mask_sample_area.height == 0)
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_intersect_mask_extents (cairo_composite_rectangles_t *extents,
+						    const cairo_box_t *box)
+{
+    cairo_rectangle_int_t mask;
+    cairo_clip_t *clip;
+
+    _cairo_box_round_to_rectangle (box, &mask);
+    if (mask.x == extents->mask.x &&
+	mask.y == extents->mask.y &&
+	mask.width  == extents->mask.width &&
+	mask.height == extents->mask.height)
+    {
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    _cairo_rectangle_intersect (&extents->mask, &mask);
+
+    mask = extents->bounded;
+    if (! _cairo_rectangle_intersect (&extents->bounded, &extents->mask) &&
+	extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK)
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (mask.width  == extents->bounded.width &&
+	mask.height == extents->bounded.height)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    if (extents->is_bounded == (CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE)) {
+	extents->unbounded = extents->bounded;
+    } else if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK) {
+	if (!_cairo_rectangle_intersect (&extents->unbounded, &extents->mask))
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    clip = extents->clip;
+    extents->clip = _cairo_clip_reduce_for_composite (clip, extents);
+    if (clip != extents->clip)
+	_cairo_clip_destroy (clip);
+
+    if (_cairo_clip_is_all_clipped (extents->clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (! _cairo_rectangle_intersect (&extents->unbounded,
+				      _cairo_clip_get_extents (extents->clip)))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (extents->source_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
+	_cairo_pattern_sampled_area (&extents->source_pattern.base,
+				     &extents->bounded,
+				     &extents->source_sample_area);
+    if (extents->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) {
+	_cairo_pattern_sampled_area (&extents->mask_pattern.base,
+				     &extents->bounded,
+				     &extents->mask_sample_area);
+	if (extents->mask_sample_area.width == 0 ||
+	    extents->mask_sample_area.height == 0)
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_mask (cairo_composite_rectangles_t *extents,
+					   cairo_surface_t              *surface,
+					   cairo_operator_t		 op,
+					   const cairo_pattern_t	*source,
+					   const cairo_pattern_t	*mask,
+					   const cairo_clip_t		*clip)
+{
+    if (! _cairo_composite_rectangles_init (extents,
+					    surface, op, source, clip))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    extents->original_mask_pattern = mask;
+    _cairo_composite_reduce_pattern (mask, &extents->mask_pattern);
+    _cairo_pattern_get_extents (&extents->mask_pattern.base, &extents->mask, surface->is_vector);
+
+    return _cairo_composite_rectangles_intersect (extents, clip);
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_stroke (cairo_composite_rectangles_t *extents,
+					     cairo_surface_t *surface,
+					     cairo_operator_t		 op,
+					     const cairo_pattern_t	*source,
+					     const cairo_path_fixed_t		*path,
+					     const cairo_stroke_style_t	*style,
+					     const cairo_matrix_t	*ctm,
+					     const cairo_clip_t		*clip)
+{
+    if (! _cairo_composite_rectangles_init (extents,
+					    surface, op, source, clip))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    _cairo_path_fixed_approximate_stroke_extents (path, style, ctm, surface->is_vector, &extents->mask);
+
+    return _cairo_composite_rectangles_intersect (extents, clip);
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_fill (cairo_composite_rectangles_t *extents,
+					   cairo_surface_t *surface,
+					   cairo_operator_t		 op,
+					   const cairo_pattern_t	*source,
+					   const cairo_path_fixed_t		*path,
+					   const cairo_clip_t		*clip)
+{
+    if (! _cairo_composite_rectangles_init (extents,
+					    surface, op, source, clip))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    _cairo_path_fixed_approximate_fill_extents (path, &extents->mask);
+
+    return _cairo_composite_rectangles_intersect (extents, clip);
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_polygon (cairo_composite_rectangles_t *extents,
+					      cairo_surface_t		*surface,
+					      cairo_operator_t		 op,
+					      const cairo_pattern_t	*source,
+					      const cairo_polygon_t	*polygon,
+					      const cairo_clip_t		*clip)
+{
+    if (! _cairo_composite_rectangles_init (extents,
+					    surface, op, source, clip))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    _cairo_box_round_to_rectangle (&polygon->extents, &extents->mask);
+    return _cairo_composite_rectangles_intersect (extents, clip);
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_boxes (cairo_composite_rectangles_t *extents,
+					      cairo_surface_t		*surface,
+					      cairo_operator_t		 op,
+					      const cairo_pattern_t	*source,
+					      const cairo_boxes_t	*boxes,
+					      const cairo_clip_t		*clip)
+{
+    cairo_box_t box;
+
+    if (! _cairo_composite_rectangles_init (extents,
+					    surface, op, source, clip))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    _cairo_boxes_extents (boxes, &box);
+    _cairo_box_round_to_rectangle (&box, &extents->mask);
+    return _cairo_composite_rectangles_intersect (extents, clip);
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_init_for_glyphs (cairo_composite_rectangles_t *extents,
+					     cairo_surface_t *surface,
+					     cairo_operator_t		 op,
+					     const cairo_pattern_t	*source,
+					     cairo_scaled_font_t	*scaled_font,
+					     cairo_glyph_t		*glyphs,
+					     int			 num_glyphs,
+					     const cairo_clip_t		*clip,
+					     cairo_bool_t		*overlap)
+{
+    cairo_status_t status;
+
+    if (! _cairo_composite_rectangles_init (extents, surface, op, source, clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    /* Computing the exact bbox and the overlap is expensive.
+     * First perform a cheap test to see if the glyphs are all clipped out.
+     */
+    if (extents->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK &&
+	_cairo_scaled_font_glyph_approximate_extents (scaled_font,
+						      glyphs, num_glyphs,
+						      &extents->mask))
+    {
+	if (! _cairo_rectangle_intersect (&extents->bounded, &extents->mask))
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    status = _cairo_scaled_font_glyph_device_extents (scaled_font,
+						      glyphs, num_glyphs,
+						      &extents->mask,
+						      overlap);
+    if (unlikely (status))
+	return status;
+
+    if (overlap && *overlap &&
+	scaled_font->options.antialias == CAIRO_ANTIALIAS_NONE &&
+	_cairo_pattern_is_opaque_solid (&extents->source_pattern.base))
+    {
+	*overlap = FALSE;
+    }
+
+    return _cairo_composite_rectangles_intersect (extents, clip);
+}
+
+cairo_bool_t
+_cairo_composite_rectangles_can_reduce_clip (cairo_composite_rectangles_t *composite,
+					     cairo_clip_t *clip)
+{
+    cairo_rectangle_int_t extents;
+    cairo_box_t box;
+
+    if (clip == NULL)
+	return TRUE;
+
+    extents = composite->destination;
+    if (composite->is_bounded & CAIRO_OPERATOR_BOUND_BY_SOURCE)
+	_cairo_rectangle_intersect (&extents, &composite->source);
+    if (composite->is_bounded & CAIRO_OPERATOR_BOUND_BY_MASK)
+	_cairo_rectangle_intersect (&extents, &composite->mask);
+
+    _cairo_box_from_rectangle (&box, &extents);
+    return _cairo_clip_contains_box (clip, &box);
+}
+
+cairo_int_status_t
+_cairo_composite_rectangles_add_to_damage (cairo_composite_rectangles_t *composite,
+					   cairo_boxes_t *damage)
+{
+    cairo_int_status_t status;
+    int n;
+
+    for (n = 0; n < composite->clip->num_boxes; n++) {
+	status = _cairo_boxes_add (damage,
+			  CAIRO_ANTIALIAS_NONE,
+			  &composite->clip->boxes[n]);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-compositor-private.h b/libs/cairo-1.16.0/src/cairo-compositor-private.h
new file mode 100644
index 0000000..0199723
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-compositor-private.h
@@ -0,0 +1,365 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_COMPOSITOR_PRIVATE_H
+#define CAIRO_COMPOSITOR_PRIVATE_H
+
+#include "cairo-composite-rectangles-private.h"
+
+CAIRO_BEGIN_DECLS
+
+typedef struct {
+    cairo_scaled_font_t *font;
+    cairo_glyph_t *glyphs;
+    int num_glyphs;
+    cairo_bool_t use_mask;
+    cairo_rectangle_int_t extents;
+} cairo_composite_glyphs_info_t;
+
+struct cairo_compositor {
+    const cairo_compositor_t *delegate;
+
+    cairo_warn cairo_int_status_t
+    (*paint)			(const cairo_compositor_t	*compositor,
+				 cairo_composite_rectangles_t	*extents);
+
+    cairo_warn cairo_int_status_t
+    (*mask)			(const cairo_compositor_t	*compositor,
+				 cairo_composite_rectangles_t	*extents);
+
+    cairo_warn cairo_int_status_t
+    (*stroke)			(const cairo_compositor_t	*compositor,
+				 cairo_composite_rectangles_t	*extents,
+				 const cairo_path_fixed_t	*path,
+				 const cairo_stroke_style_t	*style,
+				 const cairo_matrix_t		*ctm,
+				 const cairo_matrix_t		*ctm_inverse,
+				 double				 tolerance,
+				 cairo_antialias_t		 antialias);
+
+    cairo_warn cairo_int_status_t
+    (*fill)			(const cairo_compositor_t	*compositor,
+				 cairo_composite_rectangles_t	*extents,
+				 const cairo_path_fixed_t	*path,
+				 cairo_fill_rule_t		 fill_rule,
+				 double				 tolerance,
+				 cairo_antialias_t		 antialias);
+
+    cairo_warn cairo_int_status_t
+    (*glyphs)			(const cairo_compositor_t	 *compositor,
+				 cairo_composite_rectangles_t	*extents,
+				 cairo_scaled_font_t		*scaled_font,
+				 cairo_glyph_t			*glyphs,
+				 int				 num_glyphs,
+				 cairo_bool_t			 overlap);
+};
+
+struct cairo_mask_compositor {
+    cairo_compositor_t base;
+
+    cairo_int_status_t (*acquire) (void *surface);
+    cairo_int_status_t (*release) (void *surface);
+
+    cairo_int_status_t (*set_clip_region) (void		 *surface,
+					   cairo_region_t	*clip_region);
+
+    cairo_surface_t * (*pattern_to_surface) (cairo_surface_t *dst,
+					     const cairo_pattern_t *pattern,
+					     cairo_bool_t is_mask,
+					     const cairo_rectangle_int_t *extents,
+					     const cairo_rectangle_int_t *sample,
+					     int *src_x, int *src_y);
+
+    cairo_int_status_t (*draw_image_boxes) (void *surface,
+					    cairo_image_surface_t *image,
+					    cairo_boxes_t *boxes,
+					    int dx, int dy);
+
+    cairo_int_status_t (*copy_boxes) (void *surface,
+				      cairo_surface_t *src,
+				      cairo_boxes_t *boxes,
+				      const cairo_rectangle_int_t *extents,
+				      int dx, int dy);
+
+    cairo_int_status_t
+	(*fill_rectangles)	(void			 *surface,
+				 cairo_operator_t	  op,
+				 const cairo_color_t     *color,
+				 cairo_rectangle_int_t   *rectangles,
+				 int			  num_rects);
+
+    cairo_int_status_t
+	(*fill_boxes)		(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_color_t	*color,
+				 cairo_boxes_t		*boxes);
+
+    cairo_int_status_t
+	(*check_composite) (const cairo_composite_rectangles_t *extents);
+
+    cairo_int_status_t
+	(*composite)		(void			*dst,
+				 cairo_operator_t	 op,
+				 cairo_surface_t	*src,
+				 cairo_surface_t	*mask,
+				 int			 src_x,
+				 int			 src_y,
+				 int			 mask_x,
+				 int			 mask_y,
+				 int			 dst_x,
+				 int			 dst_y,
+				 unsigned int		 width,
+				 unsigned int		 height);
+
+    cairo_int_status_t
+	(*composite_boxes)	(void			*surface,
+				 cairo_operator_t	 op,
+				 cairo_surface_t	*source,
+				 cairo_surface_t	*mask,
+				 int			 src_x,
+				 int			 src_y,
+				 int			 mask_x,
+				 int			 mask_y,
+				 int			 dst_x,
+				 int			 dst_y,
+				 cairo_boxes_t		*boxes,
+				 const cairo_rectangle_int_t  *extents);
+
+    cairo_int_status_t
+	(*check_composite_glyphs) (const cairo_composite_rectangles_t *extents,
+				   cairo_scaled_font_t *scaled_font,
+				   cairo_glyph_t *glyphs,
+				   int *num_glyphs);
+    cairo_int_status_t
+	(*composite_glyphs)	(void				*surface,
+				 cairo_operator_t		 op,
+				 cairo_surface_t		*src,
+				 int				 src_x,
+				 int				 src_y,
+				 int				 dst_x,
+				 int				 dst_y,
+				 cairo_composite_glyphs_info_t  *info);
+};
+
+struct cairo_traps_compositor {
+    cairo_compositor_t base;
+
+    cairo_int_status_t
+	(*acquire) (void *surface);
+
+    cairo_int_status_t
+	(*release) (void *surface);
+
+    cairo_int_status_t
+	(*set_clip_region) (void		 *surface,
+			    cairo_region_t	*clip_region);
+
+    cairo_surface_t *
+	(*pattern_to_surface) (cairo_surface_t *dst,
+			       const cairo_pattern_t *pattern,
+			       cairo_bool_t is_mask,
+			       const cairo_rectangle_int_t *extents,
+			       const cairo_rectangle_int_t *sample,
+			       int *src_x, int *src_y);
+
+    cairo_int_status_t (*draw_image_boxes) (void *surface,
+					    cairo_image_surface_t *image,
+					    cairo_boxes_t *boxes,
+					    int dx, int dy);
+
+    cairo_int_status_t (*copy_boxes) (void *surface,
+				      cairo_surface_t *src,
+				      cairo_boxes_t *boxes,
+				      const cairo_rectangle_int_t *extents,
+				      int dx, int dy);
+
+    cairo_int_status_t
+	(*fill_boxes)		(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_color_t	*color,
+				 cairo_boxes_t		*boxes);
+
+    cairo_int_status_t
+	(*check_composite) (const cairo_composite_rectangles_t *extents);
+
+    cairo_int_status_t
+	(*composite)		(void			*dst,
+				 cairo_operator_t	 op,
+				 cairo_surface_t	*src,
+				 cairo_surface_t	*mask,
+				 int			 src_x,
+				 int			 src_y,
+				 int			 mask_x,
+				 int			 mask_y,
+				 int			 dst_x,
+				 int			 dst_y,
+				 unsigned int		 width,
+				 unsigned int		 height);
+    cairo_int_status_t
+	    (*lerp)		(void			*_dst,
+				 cairo_surface_t	*abstract_src,
+				 cairo_surface_t	*abstract_mask,
+				 int			src_x,
+				 int			src_y,
+				 int			mask_x,
+				 int			mask_y,
+				 int			dst_x,
+				 int			dst_y,
+				 unsigned int		width,
+				 unsigned int		height);
+
+    cairo_int_status_t
+	(*composite_boxes)	(void			*surface,
+				 cairo_operator_t	 op,
+				 cairo_surface_t	*source,
+				 cairo_surface_t	*mask,
+				 int			 src_x,
+				 int			 src_y,
+				 int			 mask_x,
+				 int			 mask_y,
+				 int			 dst_x,
+				 int			 dst_y,
+				 cairo_boxes_t		*boxes,
+				 const cairo_rectangle_int_t  *extents);
+
+    cairo_int_status_t
+	(*composite_traps)	(void			*dst,
+				 cairo_operator_t	 op,
+				 cairo_surface_t	*source,
+				 int			 src_x,
+				 int			 src_y,
+				 int			 dst_x,
+				 int			 dst_y,
+				 const cairo_rectangle_int_t *extents,
+				 cairo_antialias_t	 antialias,
+				 cairo_traps_t		*traps);
+
+    cairo_int_status_t
+	(*composite_tristrip)	(void			*dst,
+				 cairo_operator_t	 op,
+				 cairo_surface_t	*source,
+				 int			 src_x,
+				 int			 src_y,
+				 int			 dst_x,
+				 int			 dst_y,
+				 const cairo_rectangle_int_t *extents,
+				 cairo_antialias_t	 antialias,
+				 cairo_tristrip_t	*tristrip);
+
+    cairo_int_status_t
+	(*check_composite_glyphs) (const cairo_composite_rectangles_t *extents,
+				   cairo_scaled_font_t *scaled_font,
+				   cairo_glyph_t *glyphs,
+				   int *num_glyphs);
+    cairo_int_status_t
+	(*composite_glyphs)	(void				*surface,
+				 cairo_operator_t		 op,
+				 cairo_surface_t		*src,
+				 int				 src_x,
+				 int				 src_y,
+				 int				 dst_x,
+				 int				 dst_y,
+				 cairo_composite_glyphs_info_t  *info);
+};
+
+cairo_private extern const cairo_compositor_t __cairo_no_compositor;
+cairo_private extern const cairo_compositor_t _cairo_fallback_compositor;
+
+cairo_private void
+_cairo_mask_compositor_init (cairo_mask_compositor_t *compositor,
+			     const cairo_compositor_t *delegate);
+
+cairo_private void
+_cairo_shape_mask_compositor_init (cairo_compositor_t *compositor,
+				   const cairo_compositor_t  *delegate);
+
+cairo_private void
+_cairo_traps_compositor_init (cairo_traps_compositor_t *compositor,
+			      const cairo_compositor_t *delegate);
+
+cairo_private cairo_int_status_t
+_cairo_compositor_paint (const cairo_compositor_t	*compositor,
+			 cairo_surface_t		*surface,
+			 cairo_operator_t		 op,
+			 const cairo_pattern_t		*source,
+			 const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_compositor_mask (const cairo_compositor_t	*compositor,
+			cairo_surface_t			*surface,
+			cairo_operator_t		 op,
+			const cairo_pattern_t		*source,
+			const cairo_pattern_t		*mask,
+			const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_compositor_stroke (const cairo_compositor_t	*compositor,
+			  cairo_surface_t		*surface,
+			  cairo_operator_t		 op,
+			  const cairo_pattern_t		*source,
+			  const cairo_path_fixed_t	*path,
+			  const cairo_stroke_style_t	*style,
+			  const cairo_matrix_t		*ctm,
+			  const cairo_matrix_t		*ctm_inverse,
+			  double			 tolerance,
+			  cairo_antialias_t		 antialias,
+			  const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_compositor_fill (const cairo_compositor_t	*compositor,
+			cairo_surface_t			*surface,
+			cairo_operator_t		 op,
+			const cairo_pattern_t		*source,
+			const cairo_path_fixed_t	*path,
+			cairo_fill_rule_t		 fill_rule,
+			double				 tolerance,
+			cairo_antialias_t		 antialias,
+			const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_compositor_glyphs (const cairo_compositor_t		*compositor,
+			  cairo_surface_t			*surface,
+			  cairo_operator_t			 op,
+			  const cairo_pattern_t			*source,
+			  cairo_glyph_t				*glyphs,
+			  int					 num_glyphs,
+			  cairo_scaled_font_t			*scaled_font,
+			  const cairo_clip_t			*clip);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_COMPOSITOR_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-compositor.c b/libs/cairo-1.16.0/src/cairo-compositor.c
new file mode 100644
index 0000000..b31413b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-compositor.c
@@ -0,0 +1,268 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-damage-private.h"
+#include "cairo-error-private.h"
+
+cairo_int_status_t
+_cairo_compositor_paint (const cairo_compositor_t	*compositor,
+			 cairo_surface_t		*surface,
+			 cairo_operator_t		 op,
+			 const cairo_pattern_t		*source,
+			 const cairo_clip_t		*clip)
+{
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    status = _cairo_composite_rectangles_init_for_paint (&extents, surface,
+							 op, source,
+							 clip);
+    if (unlikely (status))
+	return status;
+
+    do {
+	while (compositor->paint == NULL)
+	    compositor = compositor->delegate;
+
+	status = compositor->paint (compositor, &extents);
+
+	compositor = compositor->delegate;
+    } while (status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && surface->damage) {
+	TRACE ((stderr, "%s: applying damage (%d,%d)x(%d, %d)\n",
+		__FUNCTION__,
+		extents.unbounded.x, extents.unbounded.y,
+		extents.unbounded.width, extents.unbounded.height));
+	surface->damage = _cairo_damage_add_rectangle (surface->damage,
+						       &extents.unbounded);
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_compositor_mask (const cairo_compositor_t	*compositor,
+			cairo_surface_t			*surface,
+			cairo_operator_t		 op,
+			const cairo_pattern_t		*source,
+			const cairo_pattern_t		*mask,
+			const cairo_clip_t		*clip)
+{
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    status = _cairo_composite_rectangles_init_for_mask (&extents, surface,
+							op, source, mask,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    do {
+	while (compositor->mask == NULL)
+	    compositor = compositor->delegate;
+
+	status = compositor->mask (compositor, &extents);
+
+	compositor = compositor->delegate;
+    } while (status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && surface->damage) {
+	TRACE ((stderr, "%s: applying damage (%d,%d)x(%d, %d)\n",
+		__FUNCTION__,
+		extents.unbounded.x, extents.unbounded.y,
+		extents.unbounded.width, extents.unbounded.height));
+	surface->damage = _cairo_damage_add_rectangle (surface->damage,
+						       &extents.unbounded);
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_compositor_stroke (const cairo_compositor_t	*compositor,
+			  cairo_surface_t		*surface,
+			  cairo_operator_t		 op,
+			  const cairo_pattern_t		*source,
+			  const cairo_path_fixed_t	*path,
+			  const cairo_stroke_style_t	*style,
+			  const cairo_matrix_t		*ctm,
+			  const cairo_matrix_t		*ctm_inverse,
+			  double			 tolerance,
+			  cairo_antialias_t		 antialias,
+			  const cairo_clip_t		*clip)
+{
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (_cairo_pen_vertices_needed (tolerance, style->line_width/2, ctm) <= 1)
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents, surface,
+							  op, source,
+							  path, style, ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    do {
+	while (compositor->stroke == NULL)
+	    compositor = compositor->delegate;
+
+	status = compositor->stroke (compositor, &extents,
+				     path, style, ctm, ctm_inverse,
+				     tolerance, antialias);
+
+	compositor = compositor->delegate;
+    } while (status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && surface->damage) {
+	TRACE ((stderr, "%s: applying damage (%d,%d)x(%d, %d)\n",
+		__FUNCTION__,
+		extents.unbounded.x, extents.unbounded.y,
+		extents.unbounded.width, extents.unbounded.height));
+	surface->damage = _cairo_damage_add_rectangle (surface->damage,
+						       &extents.unbounded);
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_compositor_fill (const cairo_compositor_t	*compositor,
+			cairo_surface_t			*surface,
+			cairo_operator_t		 op,
+			const cairo_pattern_t		*source,
+			const cairo_path_fixed_t	*path,
+			cairo_fill_rule_t		 fill_rule,
+			double				 tolerance,
+			cairo_antialias_t		 antialias,
+			const cairo_clip_t		*clip)
+{
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    status = _cairo_composite_rectangles_init_for_fill (&extents, surface,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    do {
+	while (compositor->fill == NULL)
+	    compositor = compositor->delegate;
+
+	status = compositor->fill (compositor, &extents,
+				   path, fill_rule, tolerance, antialias);
+
+	compositor = compositor->delegate;
+    } while (status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && surface->damage) {
+	TRACE ((stderr, "%s: applying damage (%d,%d)x(%d, %d)\n",
+		__FUNCTION__,
+		extents.unbounded.x, extents.unbounded.y,
+		extents.unbounded.width, extents.unbounded.height));
+	surface->damage = _cairo_damage_add_rectangle (surface->damage,
+						       &extents.unbounded);
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_compositor_glyphs (const cairo_compositor_t		*compositor,
+			  cairo_surface_t			*surface,
+			  cairo_operator_t			 op,
+			  const cairo_pattern_t			*source,
+			  cairo_glyph_t				*glyphs,
+			  int					 num_glyphs,
+			  cairo_scaled_font_t			*scaled_font,
+			  const cairo_clip_t			*clip)
+{
+    cairo_composite_rectangles_t extents;
+    cairo_bool_t overlap;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    status = _cairo_composite_rectangles_init_for_glyphs (&extents, surface,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip, &overlap);
+    if (unlikely (status))
+	return status;
+
+    do {
+	while (compositor->glyphs == NULL)
+	    compositor = compositor->delegate;
+
+	status = compositor->glyphs (compositor, &extents,
+				     scaled_font, glyphs, num_glyphs, overlap);
+
+	compositor = compositor->delegate;
+    } while (status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && surface->damage) {
+	TRACE ((stderr, "%s: applying damage (%d,%d)x(%d, %d)\n",
+		__FUNCTION__,
+		extents.unbounded.x, extents.unbounded.y,
+		extents.unbounded.width, extents.unbounded.height));
+	surface->damage = _cairo_damage_add_rectangle (surface->damage,
+						       &extents.unbounded);
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-contour-inline.h b/libs/cairo-1.16.0/src/cairo-contour-inline.h
new file mode 100644
index 0000000..7972c1a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-contour-inline.h
@@ -0,0 +1,80 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_CONTOUR_INLINE_H
+#define CAIRO_CONTOUR_INLINE_H
+
+#include "cairo-contour-private.h"
+
+CAIRO_BEGIN_DECLS
+
+static inline cairo_int_status_t
+_cairo_contour_add_point (cairo_contour_t *contour,
+			  const cairo_point_t *point)
+{
+    struct _cairo_contour_chain *tail = contour->tail;
+
+    if (unlikely (tail->num_points == tail->size_points))
+	return __cairo_contour_add_point (contour, point);
+
+    tail->points[tail->num_points++] = *point;
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static inline cairo_point_t *
+_cairo_contour_first_point (cairo_contour_t *c)
+{
+    return &c->chain.points[0];
+}
+
+static inline cairo_point_t *
+_cairo_contour_last_point (cairo_contour_t *c)
+{
+    return &c->tail->points[c->tail->num_points-1];
+}
+
+static inline void
+_cairo_contour_remove_last_point (cairo_contour_t *contour)
+{
+    if (contour->chain.num_points == 0)
+	return;
+
+    if (--contour->tail->num_points == 0)
+	__cairo_contour_remove_last_chain (contour);
+}
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_CONTOUR_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-contour-private.h b/libs/cairo-1.16.0/src/cairo-contour-private.h
new file mode 100644
index 0000000..1dfc46f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-contour-private.h
@@ -0,0 +1,124 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_CONTOUR_PRIVATE_H
+#define CAIRO_CONTOUR_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-private.h"
+
+#include <stdio.h>
+
+CAIRO_BEGIN_DECLS
+
+/* A contour is simply a closed chain of points that divide the infinite plane
+ * into inside and outside. Each contour is a simple polygon, that is it
+ * contains no holes or self-intersections, but maybe either concave or convex.
+ */
+
+struct _cairo_contour_chain {
+    cairo_point_t *points;
+    int num_points, size_points;
+    struct _cairo_contour_chain *next;
+};
+
+struct _cairo_contour_iter {
+    cairo_point_t *point;
+    cairo_contour_chain_t *chain;
+};
+
+struct _cairo_contour {
+    cairo_list_t next;
+    int direction;
+    cairo_contour_chain_t chain, *tail;
+
+    cairo_point_t embedded_points[64];
+};
+
+/* Initial definition of a shape is a set of contours (some representing holes) */
+struct _cairo_shape {
+    cairo_list_t contours;
+};
+
+typedef struct _cairo_shape cairo_shape_t;
+
+#if 0
+cairo_private cairo_status_t
+_cairo_shape_init_from_polygon (cairo_shape_t *shape,
+				const cairo_polygon_t *polygon);
+
+cairo_private cairo_status_t
+_cairo_shape_reduce (cairo_shape_t *shape, double tolerance);
+#endif
+
+cairo_private void
+_cairo_contour_init (cairo_contour_t *contour,
+		     int direction);
+
+cairo_private cairo_int_status_t
+__cairo_contour_add_point (cairo_contour_t *contour,
+			   const cairo_point_t *point);
+
+cairo_private void
+_cairo_contour_simplify (cairo_contour_t *contour, double tolerance);
+
+cairo_private void
+_cairo_contour_reverse (cairo_contour_t *contour);
+
+cairo_private cairo_int_status_t
+_cairo_contour_add (cairo_contour_t *dst,
+		    const cairo_contour_t *src);
+
+cairo_private cairo_int_status_t
+_cairo_contour_add_reversed (cairo_contour_t *dst,
+			     const cairo_contour_t *src);
+
+cairo_private void
+__cairo_contour_remove_last_chain (cairo_contour_t *contour);
+
+cairo_private void
+_cairo_contour_reset (cairo_contour_t *contour);
+
+cairo_private void
+_cairo_contour_fini (cairo_contour_t *contour);
+
+cairo_private void
+_cairo_debug_print_contour (FILE *file, cairo_contour_t *contour);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_CONTOUR_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-contour.c b/libs/cairo-1.16.0/src/cairo-contour.c
new file mode 100644
index 0000000..9ad75bd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-contour.c
@@ -0,0 +1,453 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-combsort-inline.h"
+#include "cairo-contour-inline.h"
+#include "cairo-contour-private.h"
+
+void
+_cairo_contour_init (cairo_contour_t *contour,
+		     int direction)
+{
+    contour->direction = direction;
+    contour->chain.points = contour->embedded_points;
+    contour->chain.next = NULL;
+    contour->chain.num_points = 0;
+    contour->chain.size_points = ARRAY_LENGTH (contour->embedded_points);
+    contour->tail = &contour->chain;
+}
+
+cairo_int_status_t
+__cairo_contour_add_point (cairo_contour_t *contour,
+			  const cairo_point_t *point)
+{
+    cairo_contour_chain_t *tail = contour->tail;
+    cairo_contour_chain_t *next;
+
+    assert (tail->next == NULL);
+
+    next = _cairo_malloc_ab_plus_c (tail->size_points*2,
+				    sizeof (cairo_point_t),
+				    sizeof (cairo_contour_chain_t));
+    if (unlikely (next == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    next->size_points = tail->size_points*2;
+    next->num_points = 1;
+    next->points = (cairo_point_t *)(next+1);
+    next->next = NULL;
+    tail->next = next;
+    contour->tail = next;
+
+    next->points[0] = *point;
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static void
+first_inc (cairo_contour_t *contour,
+	   cairo_point_t **p,
+	   cairo_contour_chain_t **chain)
+{
+    if (*p == (*chain)->points + (*chain)->num_points) {
+	assert ((*chain)->next);
+	*chain = (*chain)->next;
+	*p = &(*chain)->points[0];
+    } else
+	++*p;
+}
+
+static void
+last_dec (cairo_contour_t *contour,
+	  cairo_point_t **p,
+	  cairo_contour_chain_t **chain)
+{
+    if (*p == (*chain)->points) {
+	cairo_contour_chain_t *prev;
+	assert (*chain != &contour->chain);
+	for (prev = &contour->chain; prev->next != *chain; prev = prev->next)
+	    ;
+	*chain = prev;
+	*p = &(*chain)->points[(*chain)->num_points-1];
+    } else
+	--*p;
+}
+
+void
+_cairo_contour_reverse (cairo_contour_t *contour)
+{
+    cairo_contour_chain_t *first_chain, *last_chain;
+    cairo_point_t *first, *last;
+
+    contour->direction = -contour->direction;
+
+    if (contour->chain.num_points <= 1)
+	return;
+
+    first_chain = &contour->chain;
+    last_chain = contour->tail;
+
+    first = &first_chain->points[0];
+    last = &last_chain->points[last_chain->num_points-1];
+
+    while (first != last) {
+	cairo_point_t p;
+
+	p = *first;
+	*first = *last;
+	*last = p;
+
+	first_inc (contour, &first, &first_chain);
+	last_dec (contour, &last, &last_chain);
+    }
+}
+
+cairo_int_status_t
+_cairo_contour_add (cairo_contour_t *dst,
+		    const cairo_contour_t *src)
+{
+    const cairo_contour_chain_t *chain;
+    cairo_int_status_t status;
+    int i;
+
+    for (chain = &src->chain; chain; chain = chain->next) {
+	for (i = 0; i < chain->num_points; i++) {
+	    status = _cairo_contour_add_point (dst, &chain->points[i]);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static inline cairo_bool_t
+iter_next (cairo_contour_iter_t *iter)
+{
+    if (iter->point == &iter->chain->points[iter->chain->size_points-1]) {
+	iter->chain = iter->chain->next;
+	if (iter->chain == NULL)
+	    return FALSE;
+
+	iter->point = &iter->chain->points[0];
+	return TRUE;
+    } else {
+	iter->point++;
+	return TRUE;
+    }
+}
+
+static cairo_bool_t
+iter_equal (const cairo_contour_iter_t *i1,
+	    const cairo_contour_iter_t *i2)
+{
+    return i1->chain == i2->chain && i1->point == i2->point;
+}
+
+static void
+iter_init (cairo_contour_iter_t *iter, cairo_contour_t *contour)
+{
+    iter->chain = &contour->chain;
+    iter->point = &contour->chain.points[0];
+}
+
+static void
+iter_init_last (cairo_contour_iter_t *iter, cairo_contour_t *contour)
+{
+    iter->chain = contour->tail;
+    iter->point = &contour->tail->points[contour->tail->num_points-1];
+}
+
+static const cairo_contour_chain_t *prev_const_chain(const cairo_contour_t *contour,
+						     const cairo_contour_chain_t *chain)
+{
+    const cairo_contour_chain_t *prev;
+
+    if (chain == &contour->chain)
+	return NULL;
+
+    for (prev = &contour->chain; prev->next != chain; prev = prev->next)
+	;
+
+    return prev;
+}
+
+cairo_int_status_t
+_cairo_contour_add_reversed (cairo_contour_t *dst,
+			     const cairo_contour_t *src)
+{
+    const cairo_contour_chain_t *last;
+    cairo_int_status_t status;
+    int i;
+
+    if (src->chain.num_points == 0)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    for (last = src->tail; last; last = prev_const_chain (src, last)) {
+	for (i = last->num_points-1; i >= 0; i--) {
+	    status = _cairo_contour_add_point (dst, &last->points[i]);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_uint64_t
+point_distance_sq (const cairo_point_t *p1,
+		   const cairo_point_t *p2)
+{
+    int32_t dx = p1->x - p2->x;
+    int32_t dy = p1->y - p2->y;
+    return _cairo_int32x32_64_mul (dx, dx) + _cairo_int32x32_64_mul (dy, dy);
+}
+
+#define DELETED(p) ((p)->x == INT_MIN && (p)->y == INT_MAX)
+#define MARK_DELETED(p) ((p)->x = INT_MIN, (p)->y = INT_MAX)
+
+static cairo_bool_t
+_cairo_contour_simplify_chain (cairo_contour_t *contour, const double tolerance,
+			       const cairo_contour_iter_t *first,
+			       const cairo_contour_iter_t *last)
+{
+    cairo_contour_iter_t iter, furthest;
+    uint64_t max_error;
+    int x0, y0;
+    int nx, ny;
+    int count;
+
+    iter = *first;
+    iter_next (&iter);
+    if (iter_equal (&iter, last))
+	return FALSE;
+
+    x0 = first->point->x;
+    y0 = first->point->y;
+    nx = last->point->y - y0;
+    ny = x0 - last->point->x;
+
+    count = 0;
+    max_error = 0;
+    do {
+	cairo_point_t *p = iter.point;
+	if (! DELETED(p)) {
+	    uint64_t d = (uint64_t)nx * (x0 - p->x) + (uint64_t)ny * (y0 - p->y);
+	    if (d * d > max_error) {
+		max_error = d * d;
+		furthest = iter;
+	    }
+	    count++;
+	}
+	iter_next (&iter);
+    } while (! iter_equal (&iter, last));
+    if (count == 0)
+	return FALSE;
+
+    if (max_error > tolerance * ((uint64_t)nx * nx + (uint64_t)ny * ny)) {
+	cairo_bool_t simplified;
+
+	simplified = FALSE;
+	simplified |= _cairo_contour_simplify_chain (contour, tolerance,
+						     first, &furthest);
+	simplified |= _cairo_contour_simplify_chain (contour, tolerance,
+						     &furthest, last);
+	return simplified;
+    } else {
+	iter = *first;
+	iter_next (&iter);
+	do {
+	    MARK_DELETED (iter.point);
+	    iter_next (&iter);
+	} while (! iter_equal (&iter, last));
+
+	return TRUE;
+    }
+}
+
+void
+_cairo_contour_simplify (cairo_contour_t *contour, double tolerance)
+{
+    cairo_contour_chain_t *chain;
+    cairo_point_t *last = NULL;
+    cairo_contour_iter_t iter, furthest;
+    cairo_bool_t simplified;
+    uint64_t max = 0;
+    int i;
+
+    if (contour->chain.num_points <= 2)
+	return;
+
+    tolerance = tolerance * CAIRO_FIXED_ONE;
+    tolerance *= tolerance;
+
+    /* stage 1: vertex reduction */
+    for (chain = &contour->chain; chain; chain = chain->next) {
+	for (i = 0; i < chain->num_points; i++) {
+	    if (last == NULL ||
+		point_distance_sq (last, &chain->points[i]) > tolerance) {
+		last = &chain->points[i];
+	    } else {
+		MARK_DELETED (&chain->points[i]);
+	    }
+	}
+    }
+
+    /* stage2: polygon simplification using Douglas-Peucker */
+    do {
+	last = &contour->chain.points[0];
+	iter_init (&furthest, contour);
+	max = 0;
+	for (chain = &contour->chain; chain; chain = chain->next) {
+	    for (i = 0; i < chain->num_points; i++) {
+		uint64_t d;
+
+		if (DELETED (&chain->points[i]))
+		    continue;
+
+		d = point_distance_sq (last, &chain->points[i]);
+		if (d > max) {
+		    furthest.chain = chain;
+		    furthest.point = &chain->points[i];
+		    max = d;
+		}
+	    }
+	}
+	assert (max);
+
+	simplified = FALSE;
+	iter_init (&iter, contour);
+	simplified |= _cairo_contour_simplify_chain (contour, tolerance,
+						     &iter, &furthest);
+
+	iter_init_last (&iter, contour);
+	if (! iter_equal (&furthest, &iter))
+	    simplified |= _cairo_contour_simplify_chain (contour, tolerance,
+							 &furthest, &iter);
+    } while (simplified);
+
+    iter_init (&iter, contour);
+    for (chain = &contour->chain; chain; chain = chain->next) {
+	int num_points = chain->num_points;
+	chain->num_points = 0;
+	for (i = 0; i < num_points; i++) {
+	    if (! DELETED(&chain->points[i])) {
+		if (iter.point != &chain->points[i])
+		    *iter.point = chain->points[i];
+		iter.chain->num_points++;
+		iter_next (&iter);
+	    }
+	}
+    }
+
+    if (iter.chain) {
+	cairo_contour_chain_t *next;
+
+	for (chain = iter.chain->next; chain; chain = next) {
+	    next = chain->next;
+	    free (chain);
+	}
+
+	iter.chain->next = NULL;
+	contour->tail = iter.chain;
+    }
+}
+
+void
+_cairo_contour_reset (cairo_contour_t *contour)
+{
+    _cairo_contour_fini (contour);
+    _cairo_contour_init (contour, contour->direction);
+}
+
+void
+_cairo_contour_fini (cairo_contour_t *contour)
+{
+    cairo_contour_chain_t *chain, *next;
+
+    for (chain = contour->chain.next; chain; chain = next) {
+	next = chain->next;
+	free (chain);
+    }
+}
+
+void
+_cairo_debug_print_contour (FILE *file, cairo_contour_t *contour)
+{
+    cairo_contour_chain_t *chain;
+    int num_points, size_points;
+    int i;
+
+    num_points = 0;
+    size_points = 0;
+    for (chain = &contour->chain; chain; chain = chain->next) {
+	num_points += chain->num_points;
+	size_points += chain->size_points;
+    }
+
+    fprintf (file, "contour: direction=%d, num_points=%d / %d\n",
+	     contour->direction, num_points, size_points);
+
+    num_points = 0;
+    for (chain = &contour->chain; chain; chain = chain->next) {
+	for (i = 0; i < chain->num_points; i++) {
+	    fprintf (file, "  [%d] = (%f, %f)\n",
+		     num_points++,
+		     _cairo_fixed_to_double (chain->points[i].x),
+		     _cairo_fixed_to_double (chain->points[i].y));
+	}
+    }
+}
+
+void
+__cairo_contour_remove_last_chain (cairo_contour_t *contour)
+{
+    cairo_contour_chain_t *chain;
+
+    if (contour->tail == &contour->chain)
+	return;
+
+    for (chain = &contour->chain; chain->next != contour->tail; chain = chain->next)
+	;
+    free (contour->tail);
+    contour->tail = chain;
+    chain->next = NULL;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-damage-private.h b/libs/cairo-1.16.0/src/cairo-damage-private.h
new file mode 100644
index 0000000..97b177e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-damage-private.h
@@ -0,0 +1,85 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_DAMAGE_PRIVATE_H
+#define CAIRO_DAMAGE_PRIVATE_H
+
+#include "cairo-types-private.h"
+
+#include <pixman.h>
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo_damage {
+    cairo_status_t status;
+    cairo_region_t *region;
+
+    int dirty, remain;
+    struct _cairo_damage_chunk {
+	struct _cairo_damage_chunk *next;
+	cairo_box_t *base;
+	int count;
+	int size;
+    } chunks, *tail;
+    cairo_box_t boxes[32];
+};
+
+cairo_private cairo_damage_t *
+_cairo_damage_create (void);
+
+cairo_private cairo_damage_t *
+_cairo_damage_create_in_error (cairo_status_t status);
+
+cairo_private cairo_damage_t *
+_cairo_damage_add_box (cairo_damage_t *damage,
+		       const cairo_box_t *box);
+
+cairo_private cairo_damage_t *
+_cairo_damage_add_rectangle (cairo_damage_t *damage,
+			     const cairo_rectangle_int_t *rect);
+
+cairo_private cairo_damage_t *
+_cairo_damage_add_region (cairo_damage_t *damage,
+			  const cairo_region_t *region);
+
+cairo_private cairo_damage_t *
+_cairo_damage_reduce (cairo_damage_t *damage);
+
+cairo_private void
+_cairo_damage_destroy (cairo_damage_t *damage);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_DAMAGE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-damage.c b/libs/cairo-1.16.0/src/cairo-damage.c
new file mode 100644
index 0000000..97d9fe9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-damage.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-damage-private.h"
+#include "cairo-region-private.h"
+
+static const cairo_damage_t __cairo_damage__nil = { CAIRO_STATUS_NO_MEMORY };
+
+cairo_damage_t *
+_cairo_damage_create_in_error (cairo_status_t status)
+{
+    _cairo_error_throw (status);
+    return (cairo_damage_t *) &__cairo_damage__nil;
+}
+
+cairo_damage_t *
+_cairo_damage_create (void)
+{
+    cairo_damage_t *damage;
+
+    damage = _cairo_malloc (sizeof (*damage));
+    if (unlikely (damage == NULL)) {
+	_cairo_error_throw(CAIRO_STATUS_NO_MEMORY);
+	return (cairo_damage_t *) &__cairo_damage__nil;
+    }
+
+    damage->status = CAIRO_STATUS_SUCCESS;
+    damage->region = NULL;
+    damage->dirty = 0;
+    damage->tail = &damage->chunks;
+    damage->chunks.base = damage->boxes;
+    damage->chunks.size = ARRAY_LENGTH(damage->boxes);
+    damage->chunks.count = 0;
+    damage->chunks.next = NULL;
+
+    damage->remain = damage->chunks.size;
+
+    return damage;
+}
+
+void
+_cairo_damage_destroy (cairo_damage_t *damage)
+{
+    struct _cairo_damage_chunk *chunk, *next;
+
+    if (damage == (cairo_damage_t *) &__cairo_damage__nil)
+	return;
+
+    for (chunk = damage->chunks.next; chunk != NULL; chunk = next) {
+	next = chunk->next;
+	free (chunk);
+    }
+    cairo_region_destroy (damage->region);
+    free (damage);
+}
+
+static cairo_damage_t *
+_cairo_damage_add_boxes(cairo_damage_t *damage,
+			const cairo_box_t *boxes,
+			int count)
+{
+    struct _cairo_damage_chunk *chunk;
+    int n, size;
+
+    TRACE ((stderr, "%s x%d\n", __FUNCTION__, count));
+
+    if (damage == NULL)
+	damage = _cairo_damage_create ();
+    if (damage->status)
+	return damage;
+
+    damage->dirty += count;
+
+    n = count;
+    if (n > damage->remain)
+	n = damage->remain;
+
+    memcpy (damage->tail->base + damage->tail->count, boxes,
+	    n * sizeof (cairo_box_t));
+
+    count -= n;
+    damage->tail->count += n;
+    damage->remain -= n;
+
+    if (count == 0)
+	return damage;
+
+    size = 2 * damage->tail->size;
+    if (size < count)
+	size = (count + 64) & ~63;
+
+    chunk = _cairo_malloc (sizeof (*chunk) + sizeof (cairo_box_t) * size);
+    if (unlikely (chunk == NULL)) {
+	_cairo_damage_destroy (damage);
+	return (cairo_damage_t *) &__cairo_damage__nil;
+    }
+
+    chunk->next = NULL;
+    chunk->base = (cairo_box_t *) (chunk + 1);
+    chunk->size = size;
+    chunk->count = count;
+
+    damage->tail->next = chunk;
+    damage->tail = chunk;
+
+    memcpy (damage->tail->base, boxes + n,
+	    count * sizeof (cairo_box_t));
+    damage->remain = size - count;
+
+    return damage;
+}
+
+cairo_damage_t *
+_cairo_damage_add_box(cairo_damage_t *damage,
+		      const cairo_box_t *box)
+{
+    TRACE ((stderr, "%s: (%d, %d),(%d, %d)\n", __FUNCTION__,
+	    box->p1.x, box->p1.y, box->p2.x, box->p2.y));
+
+    return _cairo_damage_add_boxes(damage, box, 1);
+}
+
+cairo_damage_t *
+_cairo_damage_add_rectangle(cairo_damage_t *damage,
+			    const cairo_rectangle_int_t *r)
+{
+    cairo_box_t box;
+
+    TRACE ((stderr, "%s: (%d, %d)x(%d, %d)\n", __FUNCTION__,
+	    r->x, r->y, r->width, r->height));
+
+    box.p1.x = r->x;
+    box.p1.y = r->y;
+    box.p2.x = r->x + r->width;
+    box.p2.y = r->y + r->height;
+
+    return _cairo_damage_add_boxes(damage, &box, 1);
+}
+
+cairo_damage_t *
+_cairo_damage_add_region (cairo_damage_t *damage,
+			  const cairo_region_t *region)
+{
+    cairo_box_t *boxes;
+    int nbox;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    boxes = _cairo_region_get_boxes (region, &nbox);
+    return _cairo_damage_add_boxes(damage, boxes, nbox);
+}
+
+cairo_damage_t *
+_cairo_damage_reduce (cairo_damage_t *damage)
+{
+    cairo_box_t *free_boxes = NULL;
+    cairo_box_t *boxes, *b;
+    struct _cairo_damage_chunk *chunk, *last;
+
+    TRACE ((stderr, "%s: dirty=%d\n", __FUNCTION__,
+	    damage ? damage->dirty : -1));
+    if (damage == NULL || damage->status || !damage->dirty)
+	return damage;
+
+    if (damage->region) {
+	cairo_region_t *region;
+
+	region = damage->region;
+	damage->region = NULL;
+
+	damage = _cairo_damage_add_region (damage, region);
+	cairo_region_destroy (region);
+
+	if (unlikely (damage->status))
+	    return damage;
+    }
+
+    boxes = damage->tail->base;
+    if (damage->dirty > damage->tail->size) {
+	boxes = free_boxes = _cairo_malloc (damage->dirty * sizeof (cairo_box_t));
+	if (unlikely (boxes == NULL)) {
+	    _cairo_damage_destroy (damage);
+	    return (cairo_damage_t *) &__cairo_damage__nil;
+	}
+
+	b = boxes;
+	last = NULL;
+    } else {
+	b = boxes + damage->tail->count;
+	last = damage->tail;
+    }
+
+    for (chunk = &damage->chunks; chunk != last; chunk = chunk->next) {
+	memcpy (b, chunk->base, chunk->count * sizeof (cairo_box_t));
+	b += chunk->count;
+    }
+
+    damage->region = _cairo_region_create_from_boxes (boxes, damage->dirty);
+    free (free_boxes);
+
+    if (unlikely (damage->region->status)) {
+	_cairo_damage_destroy (damage);
+	return (cairo_damage_t *) &__cairo_damage__nil;
+    }
+
+    damage->dirty = 0;
+    return damage;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-debug.c b/libs/cairo-1.16.0/src/cairo-debug.c
new file mode 100644
index 0000000..6005060
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-debug.c
@@ -0,0 +1,323 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-image-surface-private.h"
+
+/**
+ * cairo_debug_reset_static_data:
+ *
+ * Resets all static data within cairo to its original state,
+ * (ie. identical to the state at the time of program invocation). For
+ * example, all caches within cairo will be flushed empty.
+ *
+ * This function is intended to be useful when using memory-checking
+ * tools such as valgrind. When valgrind's memcheck analyzes a
+ * cairo-using program without a call to cairo_debug_reset_static_data(),
+ * it will report all data reachable via cairo's static objects as
+ * "still reachable". Calling cairo_debug_reset_static_data() just prior
+ * to program termination will make it easier to get squeaky clean
+ * reports from valgrind.
+ *
+ * WARNING: It is only safe to call this function when there are no
+ * active cairo objects remaining, (ie. the appropriate destroy
+ * functions have been called as necessary). If there are active cairo
+ * objects, this call is likely to cause a crash, (eg. an assertion
+ * failure due to a hash table being destroyed when non-empty).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_debug_reset_static_data (void)
+{
+    CAIRO_MUTEX_INITIALIZE ();
+
+    _cairo_scaled_font_map_destroy ();
+
+    _cairo_toy_font_face_reset_static_data ();
+
+#if CAIRO_HAS_FT_FONT
+    _cairo_ft_font_reset_static_data ();
+#endif
+
+#if CAIRO_HAS_WIN32_FONT
+    _cairo_win32_font_reset_static_data ();
+#endif
+
+    _cairo_intern_string_reset_static_data ();
+
+    _cairo_scaled_font_reset_static_data ();
+
+    _cairo_pattern_reset_static_data ();
+
+    _cairo_clip_reset_static_data ();
+
+    _cairo_image_reset_static_data ();
+
+    _cairo_image_compositor_reset_static_data ();
+
+#if CAIRO_HAS_DRM_SURFACE
+    _cairo_drm_device_reset_static_data ();
+#endif
+
+    _cairo_default_context_reset_static_data ();
+
+#if CAIRO_HAS_COGL_SURFACE
+    _cairo_cogl_context_reset_static_data ();
+#endif
+
+    CAIRO_MUTEX_FINALIZE ();
+}
+
+#if HAVE_VALGRIND
+void
+_cairo_debug_check_image_surface_is_defined (const cairo_surface_t *surface)
+{
+    const cairo_image_surface_t *image = (cairo_image_surface_t *) surface;
+    const uint8_t *bits;
+    int row, width;
+
+    if (surface == NULL)
+	return;
+
+    if (! RUNNING_ON_VALGRIND)
+	return;
+
+    bits = image->data;
+    switch (image->format) {
+    case CAIRO_FORMAT_A1:
+	width = (image->width + 7)/8;
+	break;
+    case CAIRO_FORMAT_A8:
+	width = image->width;
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	width = image->width*2;
+	break;
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_RGB30:
+    case CAIRO_FORMAT_ARGB32:
+	width = image->width*4;
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+	/* XXX compute width from pixman bpp */
+	return;
+    }
+
+    for (row = 0; row < image->height; row++) {
+	VALGRIND_CHECK_MEM_IS_DEFINED (bits, width);
+	/* and then silence any future valgrind warnings */
+	VALGRIND_MAKE_MEM_DEFINED (bits, width);
+	bits += image->stride;
+    }
+}
+#endif
+
+
+#if 0
+void
+_cairo_image_surface_write_to_ppm (cairo_image_surface_t *isurf, const char *fn)
+{
+    char *fmt;
+    if (isurf->format == CAIRO_FORMAT_ARGB32 || isurf->format == CAIRO_FORMAT_RGB24)
+        fmt = "P6";
+    else if (isurf->format == CAIRO_FORMAT_A8)
+        fmt = "P5";
+    else
+        return;
+
+    FILE *fp = fopen(fn, "wb");
+    if (!fp)
+        return;
+
+    fprintf (fp, "%s %d %d 255\n", fmt,isurf->width, isurf->height);
+    for (int j = 0; j < isurf->height; j++) {
+        unsigned char *row = isurf->data + isurf->stride * j;
+        for (int i = 0; i < isurf->width; i++) {
+            if (isurf->format == CAIRO_FORMAT_ARGB32 || isurf->format == CAIRO_FORMAT_RGB24) {
+                unsigned char r = *row++;
+                unsigned char g = *row++;
+                unsigned char b = *row++;
+                *row++;
+                putc(r, fp);
+                putc(g, fp);
+                putc(b, fp);
+            } else {
+                unsigned char a = *row++;
+                putc(a, fp);
+            }
+        }
+    }
+
+    fclose (fp);
+
+    fprintf (stderr, "Wrote %s\n", fn);
+}
+#endif
+
+static cairo_status_t
+_print_move_to (void *closure,
+		const cairo_point_t *point)
+{
+    fprintf (closure,
+	     " %f %f m",
+	     _cairo_fixed_to_double (point->x),
+	     _cairo_fixed_to_double (point->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_print_line_to (void *closure,
+		const cairo_point_t *point)
+{
+    fprintf (closure,
+	     " %f %f l",
+	     _cairo_fixed_to_double (point->x),
+	     _cairo_fixed_to_double (point->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_print_curve_to (void *closure,
+		 const cairo_point_t *p1,
+		 const cairo_point_t *p2,
+		 const cairo_point_t *p3)
+{
+    fprintf (closure,
+	     " %f %f %f %f %f %f c",
+	     _cairo_fixed_to_double (p1->x),
+	     _cairo_fixed_to_double (p1->y),
+	     _cairo_fixed_to_double (p2->x),
+	     _cairo_fixed_to_double (p2->y),
+	     _cairo_fixed_to_double (p3->x),
+	     _cairo_fixed_to_double (p3->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_print_close (void *closure)
+{
+    fprintf (closure, " h");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_debug_print_path (FILE *stream, const cairo_path_fixed_t *path)
+{
+    cairo_status_t status;
+    cairo_box_t box;
+
+    fprintf (stream,
+	     "path: extents=(%f, %f), (%f, %f)\n",
+	    _cairo_fixed_to_double (path->extents.p1.x),
+	    _cairo_fixed_to_double (path->extents.p1.y),
+	    _cairo_fixed_to_double (path->extents.p2.x),
+	    _cairo_fixed_to_double (path->extents.p2.y));
+
+    status = _cairo_path_fixed_interpret (path,
+					  _print_move_to,
+					  _print_line_to,
+					  _print_curve_to,
+					  _print_close,
+					  stream);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    if (_cairo_path_fixed_is_box (path, &box)) {
+	fprintf (stream, "[box (%d, %d), (%d, %d)]",
+		 box.p1.x, box.p1.y, box.p2.x, box.p2.y);
+    }
+
+    fprintf (stream, "\n");
+}
+
+void
+_cairo_debug_print_polygon (FILE *stream, cairo_polygon_t *polygon)
+{
+    int n;
+
+    fprintf (stream,
+	     "polygon: extents=(%f, %f), (%f, %f)\n",
+	    _cairo_fixed_to_double (polygon->extents.p1.x),
+	    _cairo_fixed_to_double (polygon->extents.p1.y),
+	    _cairo_fixed_to_double (polygon->extents.p2.x),
+	    _cairo_fixed_to_double (polygon->extents.p2.y));
+    if (polygon->num_limits) {
+	fprintf (stream,
+		 "       : limit=(%f, %f), (%f, %f) x %d\n",
+		 _cairo_fixed_to_double (polygon->limit.p1.x),
+		 _cairo_fixed_to_double (polygon->limit.p1.y),
+		 _cairo_fixed_to_double (polygon->limit.p2.x),
+		 _cairo_fixed_to_double (polygon->limit.p2.y),
+		 polygon->num_limits);
+    }
+
+    for (n = 0; n < polygon->num_edges; n++) {
+	cairo_edge_t *edge = &polygon->edges[n];
+
+	fprintf (stream,
+		 "  [%d] = [(%f, %f), (%f, %f)], top=%f, bottom=%f, dir=%d\n",
+		 n,
+		 _cairo_fixed_to_double (edge->line.p1.x),
+		 _cairo_fixed_to_double (edge->line.p1.y),
+		 _cairo_fixed_to_double (edge->line.p2.x),
+		 _cairo_fixed_to_double (edge->line.p2.y),
+		 _cairo_fixed_to_double (edge->top),
+		 _cairo_fixed_to_double (edge->bottom),
+		 edge->dir);
+
+    }
+}
+
+void
+_cairo_debug_print_matrix (FILE *file, const cairo_matrix_t *matrix)
+{
+    fprintf (file, "[%g %g %g %g %g %g]\n",
+	     matrix->xx, matrix->yx,
+	     matrix->xy, matrix->yy,
+	     matrix->x0, matrix->y0);
+}
+
+void
+_cairo_debug_print_rect (FILE *file, const cairo_rectangle_int_t *rect)
+{
+    fprintf (file, "x: %d y: %d width: %d height: %d\n",
+	     rect->x, rect->y,
+	     rect->width, rect->height);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-default-context-private.h b/libs/cairo-1.16.0/src/cairo-default-context-private.h
new file mode 100644
index 0000000..fd159b4
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-default-context-private.h
@@ -0,0 +1,68 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_DEFAULT_CONTEXT_PRIVATE_H
+#define CAIRO_DEFAULT_CONTEXT_PRIVATE_H
+
+#include "cairo-private.h"
+#include "cairo-gstate-private.h"
+#include "cairo-path-fixed-private.h"
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_default_context cairo_default_context_t;
+
+struct _cairo_default_context {
+    cairo_t base;
+
+    cairo_gstate_t *gstate;
+    cairo_gstate_t  gstate_tail[2];
+    cairo_gstate_t *gstate_freelist;
+
+    cairo_path_fixed_t path[1];
+};
+
+cairo_private cairo_t *
+_cairo_default_context_create (void *target);
+
+cairo_private cairo_status_t
+_cairo_default_context_init (cairo_default_context_t *cr, void *target);
+
+cairo_private void
+_cairo_default_context_fini (cairo_default_context_t *cr);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_DEFAULT_CONTEXT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-default-context.c b/libs/cairo-1.16.0/src/cairo-default-context.c
new file mode 100644
index 0000000..985215f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-default-context.c
@@ -0,0 +1,1496 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-private.h"
+#include "cairo-arc-private.h"
+#include "cairo-backend-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-path-private.h"
+#include "cairo-pattern-private.h"
+
+#define CAIRO_TOLERANCE_MINIMUM	_cairo_fixed_to_double(1)
+
+#if !defined(INFINITY)
+#define INFINITY HUGE_VAL
+#endif
+
+static freed_pool_t context_pool;
+
+void
+_cairo_default_context_reset_static_data (void)
+{
+    _freed_pool_reset (&context_pool);
+}
+
+void
+_cairo_default_context_fini (cairo_default_context_t *cr)
+{
+    while (cr->gstate != &cr->gstate_tail[0]) {
+	if (_cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist))
+	    break;
+    }
+
+    _cairo_gstate_fini (cr->gstate);
+    cr->gstate_freelist = cr->gstate_freelist->next; /* skip over tail[1] */
+    while (cr->gstate_freelist != NULL) {
+	cairo_gstate_t *gstate = cr->gstate_freelist;
+	cr->gstate_freelist = gstate->next;
+	free (gstate);
+    }
+
+    _cairo_path_fixed_fini (cr->path);
+
+    _cairo_fini (&cr->base);
+}
+
+static void
+_cairo_default_context_destroy (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_default_context_fini (cr);
+
+    /* mark the context as invalid to protect against misuse */
+    cr->base.status = CAIRO_STATUS_NULL_POINTER;
+    _freed_pool_put (&context_pool, cr);
+}
+
+static cairo_surface_t *
+_cairo_default_context_get_original_target (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_original_target (cr->gstate);
+}
+
+static cairo_surface_t *
+_cairo_default_context_get_current_target (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_target (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_save (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_save (&cr->gstate, &cr->gstate_freelist);
+}
+
+static cairo_status_t
+_cairo_default_context_restore (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    if (unlikely (_cairo_gstate_is_group (cr->gstate)))
+	return _cairo_error (CAIRO_STATUS_INVALID_RESTORE);
+
+    return _cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist);
+}
+
+static cairo_status_t
+_cairo_default_context_push_group (void *abstract_cr, cairo_content_t content)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_surface_t *group_surface;
+    cairo_clip_t *clip;
+    cairo_status_t status;
+
+    clip = _cairo_gstate_get_clip (cr->gstate);
+    if (_cairo_clip_is_all_clipped (clip)) {
+	group_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
+	status = group_surface->status;
+	if (unlikely (status))
+	    goto bail;
+    } else {
+	cairo_surface_t *parent_surface;
+	cairo_rectangle_int_t extents;
+	cairo_bool_t bounded, is_empty;
+
+	parent_surface = _cairo_gstate_get_target (cr->gstate);
+
+	if (unlikely (parent_surface->status))
+	    return parent_surface->status;
+	if (unlikely (parent_surface->finished))
+	    return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+	/* Get the extents that we'll use in creating our new group surface */
+	bounded = _cairo_surface_get_extents (parent_surface, &extents);
+	if (clip)
+	    /* XXX: This assignment just fixes a compiler warning? */
+	    is_empty = _cairo_rectangle_intersect (&extents,
+						   _cairo_clip_get_extents (clip));
+
+	if (!bounded) {
+	    /* XXX: Generic solution? */
+	    group_surface = cairo_recording_surface_create (content, NULL);
+	    extents.x = extents.y = 0;
+	} else {
+	    group_surface = _cairo_surface_create_scratch (parent_surface,
+							   content,
+							   extents.width,
+							   extents.height,
+							   CAIRO_COLOR_TRANSPARENT);
+	}
+	status = group_surface->status;
+	if (unlikely (status))
+	    goto bail;
+
+	/* Set device offsets on the new surface so that logically it appears at
+	 * the same location on the parent surface -- when we pop_group this,
+	 * the source pattern will get fixed up for the appropriate target surface
+	 * device offsets, so we want to set our own surface offsets from /that/,
+	 * and not from the device origin. */
+	cairo_surface_set_device_offset (group_surface,
+					 parent_surface->device_transform.x0 - extents.x,
+					 parent_surface->device_transform.y0 - extents.y);
+
+	cairo_surface_set_device_scale (group_surface,
+					parent_surface->device_transform.xx,
+					parent_surface->device_transform.yy);
+
+	/* If we have a current path, we need to adjust it to compensate for
+	 * the device offset just applied. */
+	_cairo_path_fixed_translate (cr->path,
+				     _cairo_fixed_from_int (-extents.x),
+				     _cairo_fixed_from_int (-extents.y));
+    }
+
+    /* create a new gstate for the redirect */
+    status = _cairo_gstate_save (&cr->gstate, &cr->gstate_freelist);
+    if (unlikely (status))
+	goto bail;
+
+    status = _cairo_gstate_redirect_target (cr->gstate, group_surface);
+
+bail:
+    cairo_surface_destroy (group_surface);
+    return status;
+}
+
+static cairo_pattern_t *
+_cairo_default_context_pop_group (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_surface_t *group_surface;
+    cairo_pattern_t *group_pattern;
+    cairo_surface_t *parent_surface;
+    cairo_matrix_t group_matrix;
+    cairo_status_t status;
+
+    /* Verify that we are at the right nesting level */
+    if (unlikely (! _cairo_gstate_is_group (cr->gstate)))
+	return _cairo_pattern_create_in_error (CAIRO_STATUS_INVALID_POP_GROUP);
+
+    /* Get a reference to the active surface before restoring */
+    group_surface = _cairo_gstate_get_target (cr->gstate);
+    group_surface = cairo_surface_reference (group_surface);
+
+    status = _cairo_gstate_restore (&cr->gstate, &cr->gstate_freelist);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    parent_surface = _cairo_gstate_get_target (cr->gstate);
+
+    group_pattern = cairo_pattern_create_for_surface (group_surface);
+    status = group_pattern->status;
+    if (unlikely (status))
+        goto done;
+
+    _cairo_gstate_get_matrix (cr->gstate, &group_matrix);
+    cairo_pattern_set_matrix (group_pattern, &group_matrix);
+
+    /* If we have a current path, we need to adjust it to compensate for
+     * the device offset just removed. */
+    _cairo_path_fixed_translate (cr->path,
+				 _cairo_fixed_from_int (parent_surface->device_transform.x0 - group_surface->device_transform.x0),
+				 _cairo_fixed_from_int (parent_surface->device_transform.y0 - group_surface->device_transform.y0));
+
+done:
+    cairo_surface_destroy (group_surface);
+
+    return group_pattern;
+}
+
+static cairo_status_t
+_cairo_default_context_set_source (void *abstract_cr,
+				   cairo_pattern_t *source)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_source (cr->gstate, source);
+}
+
+static cairo_bool_t
+_current_source_matches_solid (const cairo_pattern_t *pattern,
+			       double red,
+			       double green,
+			       double blue,
+			       double alpha)
+{
+    cairo_color_t color;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
+	return FALSE;
+
+    red   = _cairo_restrict_value (red,   0.0, 1.0);
+    green = _cairo_restrict_value (green, 0.0, 1.0);
+    blue  = _cairo_restrict_value (blue,  0.0, 1.0);
+    alpha = _cairo_restrict_value (alpha, 0.0, 1.0);
+
+    _cairo_color_init_rgba (&color, red, green, blue, alpha);
+    return _cairo_color_equal (&color,
+			       &((cairo_solid_pattern_t *) pattern)->color);
+}
+
+static cairo_status_t
+_cairo_default_context_set_source_rgba (void *abstract_cr, double red, double green, double blue, double alpha)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_pattern_t *pattern;
+    cairo_status_t status;
+
+    if (_current_source_matches_solid (cr->gstate->source,
+				       red, green, blue, alpha))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* push the current pattern to the freed lists */
+    _cairo_default_context_set_source (cr, (cairo_pattern_t *) &_cairo_pattern_black);
+
+    pattern = cairo_pattern_create_rgba (red, green, blue, alpha);
+    if (unlikely (pattern->status))
+	return pattern->status;
+
+    status = _cairo_default_context_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_default_context_set_source_surface (void *abstract_cr,
+					   cairo_surface_t *surface,
+					   double	   x,
+					   double	   y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_pattern_t *pattern;
+    cairo_matrix_t matrix;
+    cairo_status_t status;
+
+    /* push the current pattern to the freed lists */
+    _cairo_default_context_set_source (cr, (cairo_pattern_t *) &_cairo_pattern_black);
+
+    pattern = cairo_pattern_create_for_surface (surface);
+    if (unlikely (pattern->status))
+	return pattern->status;
+
+    cairo_matrix_init_translate (&matrix, -x, -y);
+    cairo_pattern_set_matrix (pattern, &matrix);
+
+    status = _cairo_default_context_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    return status;
+}
+
+static cairo_pattern_t *
+_cairo_default_context_get_source (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_source (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_set_tolerance (void *abstract_cr,
+				      double tolerance)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    if (tolerance < CAIRO_TOLERANCE_MINIMUM)
+	tolerance = CAIRO_TOLERANCE_MINIMUM;
+
+    return _cairo_gstate_set_tolerance (cr->gstate, tolerance);
+}
+
+static cairo_status_t
+_cairo_default_context_set_operator (void *abstract_cr, cairo_operator_t op)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_operator (cr->gstate, op);
+}
+
+static cairo_status_t
+_cairo_default_context_set_opacity (void *abstract_cr, double opacity)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_opacity (cr->gstate, opacity);
+}
+
+static cairo_status_t
+_cairo_default_context_set_antialias (void *abstract_cr,
+				      cairo_antialias_t antialias)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_antialias (cr->gstate, antialias);
+}
+
+static cairo_status_t
+_cairo_default_context_set_fill_rule (void *abstract_cr,
+				      cairo_fill_rule_t fill_rule)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_fill_rule (cr->gstate, fill_rule);
+}
+
+static cairo_status_t
+_cairo_default_context_set_line_width (void *abstract_cr,
+				       double line_width)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_line_width (cr->gstate, line_width);
+}
+
+static cairo_status_t
+_cairo_default_context_set_line_cap (void *abstract_cr,
+				     cairo_line_cap_t line_cap)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_line_cap (cr->gstate, line_cap);
+}
+
+static cairo_status_t
+_cairo_default_context_set_line_join (void *abstract_cr,
+				      cairo_line_join_t line_join)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_line_join (cr->gstate, line_join);
+}
+
+static cairo_status_t
+_cairo_default_context_set_dash (void *abstract_cr,
+				 const double *dashes,
+				 int	      num_dashes,
+				 double	      offset)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_dash (cr->gstate,
+				   dashes, num_dashes, offset);
+}
+
+static cairo_status_t
+_cairo_default_context_set_miter_limit (void *abstract_cr,
+					double limit)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_miter_limit (cr->gstate, limit);
+}
+
+static cairo_antialias_t
+_cairo_default_context_get_antialias (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_antialias (cr->gstate);
+}
+
+static void
+_cairo_default_context_get_dash (void *abstract_cr,
+				 double *dashes,
+				 int *num_dashes,
+				 double *offset)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_get_dash (cr->gstate, dashes, num_dashes, offset);
+}
+
+static cairo_fill_rule_t
+_cairo_default_context_get_fill_rule (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_fill_rule (cr->gstate);
+}
+
+static double
+_cairo_default_context_get_line_width (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_line_width (cr->gstate);
+}
+
+static cairo_line_cap_t
+_cairo_default_context_get_line_cap (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_line_cap (cr->gstate);
+}
+
+static cairo_line_join_t
+_cairo_default_context_get_line_join (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_line_join (cr->gstate);
+}
+
+static double
+_cairo_default_context_get_miter_limit (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_miter_limit (cr->gstate);
+}
+
+static cairo_operator_t
+_cairo_default_context_get_operator (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_operator (cr->gstate);
+}
+
+static double
+_cairo_default_context_get_opacity (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_opacity (cr->gstate);
+}
+
+static double
+_cairo_default_context_get_tolerance (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_tolerance (cr->gstate);
+}
+
+
+/* Current tranformation matrix */
+
+static cairo_status_t
+_cairo_default_context_translate (void *abstract_cr,
+				  double tx,
+				  double ty)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_translate (cr->gstate, tx, ty);
+}
+
+static cairo_status_t
+_cairo_default_context_scale (void *abstract_cr,
+			      double sx,
+			      double sy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_scale (cr->gstate, sx, sy);
+}
+
+static cairo_status_t
+_cairo_default_context_rotate (void *abstract_cr,
+			       double theta)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_rotate (cr->gstate, theta);
+}
+
+static cairo_status_t
+_cairo_default_context_transform (void *abstract_cr,
+				  const cairo_matrix_t *matrix)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_transform (cr->gstate, matrix);
+}
+
+static cairo_status_t
+_cairo_default_context_set_matrix (void *abstract_cr,
+				   const cairo_matrix_t *matrix)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_matrix (cr->gstate, matrix);
+}
+
+static cairo_status_t
+_cairo_default_context_set_identity_matrix (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_identity_matrix (cr->gstate);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_default_context_get_matrix (void *abstract_cr,
+				   cairo_matrix_t *matrix)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_get_matrix (cr->gstate, matrix);
+}
+
+static void
+_cairo_default_context_user_to_device (void *abstract_cr,
+				       double *x,
+				       double *y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_user_to_device (cr->gstate, x, y);
+}
+
+static void
+_cairo_default_context_user_to_device_distance (void *abstract_cr, double *dx, double *dy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_user_to_device_distance (cr->gstate, dx, dy);
+}
+
+static void
+_cairo_default_context_device_to_user (void *abstract_cr,
+				       double *x,
+				       double *y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_device_to_user (cr->gstate, x, y);
+}
+
+static void
+_cairo_default_context_device_to_user_distance (void *abstract_cr,
+						double *dx,
+						double *dy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_device_to_user_distance (cr->gstate, dx, dy);
+}
+
+static void
+_cairo_default_context_backend_to_user (void *abstract_cr,
+					double *x,
+					double *y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_backend_to_user (cr->gstate, x, y);
+}
+
+static void
+_cairo_default_context_backend_to_user_distance (void *abstract_cr, double *dx, double *dy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_backend_to_user_distance (cr->gstate, dx, dy);
+}
+
+static void
+_cairo_default_context_user_to_backend (void *abstract_cr,
+					double *x,
+					double *y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_user_to_backend (cr->gstate, x, y);
+}
+
+static void
+_cairo_default_context_user_to_backend_distance (void *abstract_cr,
+						 double *dx,
+						 double *dy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_user_to_backend_distance (cr->gstate, dx, dy);
+}
+
+/* Path constructor */
+
+static cairo_status_t
+_cairo_default_context_new_path (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_path_fixed_fini (cr->path);
+    _cairo_path_fixed_init (cr->path);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_default_context_new_sub_path (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_path_fixed_new_sub_path (cr->path);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_default_context_move_to (void *abstract_cr, double x, double y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t x_fixed, y_fixed;
+
+    _cairo_gstate_user_to_backend (cr->gstate, &x, &y);
+    x_fixed = _cairo_fixed_from_double (x);
+    y_fixed = _cairo_fixed_from_double (y);
+
+    return _cairo_path_fixed_move_to (cr->path, x_fixed, y_fixed);
+}
+
+static cairo_status_t
+_cairo_default_context_line_to (void *abstract_cr, double x, double y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t x_fixed, y_fixed;
+
+    _cairo_gstate_user_to_backend (cr->gstate, &x, &y);
+    x_fixed = _cairo_fixed_from_double (x);
+    y_fixed = _cairo_fixed_from_double (y);
+
+    return _cairo_path_fixed_line_to (cr->path, x_fixed, y_fixed);
+}
+
+static cairo_status_t
+_cairo_default_context_curve_to (void *abstract_cr,
+				 double x1, double y1,
+				 double x2, double y2,
+				 double x3, double y3)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t x1_fixed, y1_fixed;
+    cairo_fixed_t x2_fixed, y2_fixed;
+    cairo_fixed_t x3_fixed, y3_fixed;
+
+    _cairo_gstate_user_to_backend (cr->gstate, &x1, &y1);
+    _cairo_gstate_user_to_backend (cr->gstate, &x2, &y2);
+    _cairo_gstate_user_to_backend (cr->gstate, &x3, &y3);
+
+    x1_fixed = _cairo_fixed_from_double (x1);
+    y1_fixed = _cairo_fixed_from_double (y1);
+
+    x2_fixed = _cairo_fixed_from_double (x2);
+    y2_fixed = _cairo_fixed_from_double (y2);
+
+    x3_fixed = _cairo_fixed_from_double (x3);
+    y3_fixed = _cairo_fixed_from_double (y3);
+
+    return _cairo_path_fixed_curve_to (cr->path,
+				       x1_fixed, y1_fixed,
+				       x2_fixed, y2_fixed,
+				       x3_fixed, y3_fixed);
+}
+
+static cairo_status_t
+_cairo_default_context_arc (void *abstract_cr,
+			    double xc, double yc, double radius,
+			    double angle1, double angle2,
+			    cairo_bool_t forward)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    /* Do nothing, successfully, if radius is <= 0 */
+    if (radius <= 0.0) {
+	cairo_fixed_t x_fixed, y_fixed;
+
+	_cairo_gstate_user_to_backend (cr->gstate, &xc, &yc);
+	x_fixed = _cairo_fixed_from_double (xc);
+	y_fixed = _cairo_fixed_from_double (yc);
+	status = _cairo_path_fixed_line_to (cr->path, x_fixed, y_fixed);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_path_fixed_line_to (cr->path, x_fixed, y_fixed);
+	if (unlikely (status))
+	    return status;
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = _cairo_default_context_line_to (cr,
+					     xc + radius * cos (angle1),
+					     yc + radius * sin (angle1));
+
+    if (unlikely (status))
+	return status;
+
+    if (forward)
+	_cairo_arc_path (&cr->base, xc, yc, radius, angle1, angle2);
+    else
+	_cairo_arc_path_negative (&cr->base, xc, yc, radius, angle1, angle2);
+
+    return CAIRO_STATUS_SUCCESS; /* any error will have already been set on cr */
+}
+
+static cairo_status_t
+_cairo_default_context_rel_move_to (void *abstract_cr, double dx, double dy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t dx_fixed, dy_fixed;
+
+    _cairo_gstate_user_to_backend_distance (cr->gstate, &dx, &dy);
+
+    dx_fixed = _cairo_fixed_from_double (dx);
+    dy_fixed = _cairo_fixed_from_double (dy);
+
+    return _cairo_path_fixed_rel_move_to (cr->path, dx_fixed, dy_fixed);
+}
+
+static cairo_status_t
+_cairo_default_context_rel_line_to (void *abstract_cr, double dx, double dy)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t dx_fixed, dy_fixed;
+
+    _cairo_gstate_user_to_backend_distance (cr->gstate, &dx, &dy);
+
+    dx_fixed = _cairo_fixed_from_double (dx);
+    dy_fixed = _cairo_fixed_from_double (dy);
+
+    return _cairo_path_fixed_rel_line_to (cr->path, dx_fixed, dy_fixed);
+}
+
+
+static cairo_status_t
+_cairo_default_context_rel_curve_to (void *abstract_cr,
+				     double dx1, double dy1,
+				     double dx2, double dy2,
+				     double dx3, double dy3)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t dx1_fixed, dy1_fixed;
+    cairo_fixed_t dx2_fixed, dy2_fixed;
+    cairo_fixed_t dx3_fixed, dy3_fixed;
+
+    _cairo_gstate_user_to_backend_distance (cr->gstate, &dx1, &dy1);
+    _cairo_gstate_user_to_backend_distance (cr->gstate, &dx2, &dy2);
+    _cairo_gstate_user_to_backend_distance (cr->gstate, &dx3, &dy3);
+
+    dx1_fixed = _cairo_fixed_from_double (dx1);
+    dy1_fixed = _cairo_fixed_from_double (dy1);
+
+    dx2_fixed = _cairo_fixed_from_double (dx2);
+    dy2_fixed = _cairo_fixed_from_double (dy2);
+
+    dx3_fixed = _cairo_fixed_from_double (dx3);
+    dy3_fixed = _cairo_fixed_from_double (dy3);
+
+    return _cairo_path_fixed_rel_curve_to (cr->path,
+					   dx1_fixed, dy1_fixed,
+					   dx2_fixed, dy2_fixed,
+					   dx3_fixed, dy3_fixed);
+}
+
+static cairo_status_t
+_cairo_default_context_close_path (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_path_fixed_close_path (cr->path);
+}
+
+static cairo_status_t
+_cairo_default_context_rectangle (void *abstract_cr,
+				  double x, double y,
+				  double width, double height)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    status = _cairo_default_context_move_to (cr, x, y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_default_context_rel_line_to (cr, width, 0);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_default_context_rel_line_to (cr, 0, height);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_default_context_rel_line_to (cr, -width, 0);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_default_context_close_path (cr);
+}
+
+static void
+_cairo_default_context_path_extents (void *abstract_cr,
+				     double *x1,
+				     double *y1,
+				     double *x2,
+				     double *y2)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_path_extents (cr->gstate,
+				cr->path,
+				x1, y1, x2, y2);
+}
+
+static cairo_bool_t
+_cairo_default_context_has_current_point (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return cr->path->has_current_point;
+}
+
+static cairo_bool_t
+_cairo_default_context_get_current_point (void *abstract_cr,
+					  double *x,
+					  double *y)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_fixed_t x_fixed, y_fixed;
+
+    if (_cairo_path_fixed_get_current_point (cr->path, &x_fixed, &y_fixed))
+    {
+	*x = _cairo_fixed_to_double (x_fixed);
+	*y = _cairo_fixed_to_double (y_fixed);
+	_cairo_gstate_backend_to_user (cr->gstate, x, y);
+
+	return TRUE;
+    }
+    else
+    {
+	return FALSE;
+    }
+}
+
+static cairo_path_t *
+_cairo_default_context_copy_path (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_path_create (cr->path, &cr->base);
+}
+
+static cairo_path_t *
+_cairo_default_context_copy_path_flat (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_path_create_flat (cr->path, &cr->base);
+}
+
+static cairo_status_t
+_cairo_default_context_append_path (void *abstract_cr,
+				    const cairo_path_t *path)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_path_append_to_context (path, &cr->base);
+}
+
+static cairo_status_t
+_cairo_default_context_paint (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_paint (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_paint_with_alpha (void *abstract_cr,
+					 double alpha)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_solid_pattern_t pattern;
+    cairo_status_t status;
+    cairo_color_t color;
+
+    if (CAIRO_ALPHA_IS_OPAQUE (alpha))
+	return _cairo_gstate_paint (cr->gstate);
+
+    if (CAIRO_ALPHA_IS_ZERO (alpha) &&
+        _cairo_operator_bounded_by_mask (cr->gstate->op)) {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_color_init_rgba (&color, 0., 0., 0., alpha);
+    _cairo_pattern_init_solid (&pattern, &color);
+
+    status = _cairo_gstate_mask (cr->gstate, &pattern.base);
+    _cairo_pattern_fini (&pattern.base);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_default_context_mask (void *abstract_cr,
+			     cairo_pattern_t *mask)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_mask (cr->gstate, mask);
+}
+
+static cairo_status_t
+_cairo_default_context_stroke_preserve (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_stroke (cr->gstate, cr->path);
+}
+
+static cairo_status_t
+_cairo_default_context_stroke (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    status = _cairo_gstate_stroke (cr->gstate, cr->path);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_default_context_new_path (cr);
+}
+
+static cairo_status_t
+_cairo_default_context_in_stroke (void *abstract_cr,
+				  double x, double y,
+				  cairo_bool_t *inside)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_in_stroke (cr->gstate,
+				    cr->path,
+				    x, y,
+				    inside);
+}
+
+static cairo_status_t
+_cairo_default_context_stroke_extents (void *abstract_cr,
+				       double *x1, double *y1, double *x2, double *y2)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_stroke_extents (cr->gstate,
+					 cr->path,
+					 x1, y1, x2, y2);
+}
+
+static cairo_status_t
+_cairo_default_context_fill_preserve (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_fill (cr->gstate, cr->path);
+}
+
+static cairo_status_t
+_cairo_default_context_fill (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    status = _cairo_gstate_fill (cr->gstate, cr->path);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_default_context_new_path (cr);
+}
+
+static cairo_status_t
+_cairo_default_context_in_fill (void *abstract_cr,
+				double x, double y,
+				cairo_bool_t *inside)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    *inside = _cairo_gstate_in_fill (cr->gstate,
+				     cr->path,
+				     x, y);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_default_context_fill_extents (void *abstract_cr,
+				     double *x1, double *y1, double *x2, double *y2)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_fill_extents (cr->gstate,
+				       cr->path,
+				       x1, y1, x2, y2);
+}
+
+static cairo_status_t
+_cairo_default_context_clip_preserve (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_clip (cr->gstate, cr->path);
+}
+
+static cairo_status_t
+_cairo_default_context_clip (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_status_t status;
+
+    status = _cairo_gstate_clip (cr->gstate, cr->path);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_default_context_new_path (cr);
+}
+
+static cairo_status_t
+_cairo_default_context_in_clip (void *abstract_cr,
+				double x, double y,
+				cairo_bool_t *inside)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    *inside = _cairo_gstate_in_clip (cr->gstate, x, y);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_default_context_reset_clip (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_reset_clip (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_clip_extents (void *abstract_cr,
+				     double *x1, double *y1, double *x2, double *y2)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    if (! _cairo_gstate_clip_extents (cr->gstate, x1, y1, x2, y2)) {
+	*x1 = -INFINITY;
+	*y1 = -INFINITY;
+	*x2 = +INFINITY;
+	*y2 = +INFINITY;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_rectangle_list_t *
+_cairo_default_context_copy_clip_rectangle_list (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_copy_clip_rectangle_list (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_copy_page (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_copy_page (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_tag_begin (void *abstract_cr,
+				  const char *tag_name, const char *attributes)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_tag_begin (cr->gstate, tag_name, attributes);
+}
+
+static cairo_status_t
+_cairo_default_context_tag_end (void *abstract_cr,
+				const char *tag_name)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_tag_end (cr->gstate, tag_name);
+}
+
+static cairo_status_t
+_cairo_default_context_show_page (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_show_page (cr->gstate);
+}
+
+static cairo_status_t
+_cairo_default_context_set_font_face (void *abstract_cr,
+				      cairo_font_face_t *font_face)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_font_face (cr->gstate, font_face);
+}
+
+static cairo_font_face_t *
+_cairo_default_context_get_font_face (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_font_face_t *font_face;
+    cairo_status_t status;
+
+    status = _cairo_gstate_get_font_face (cr->gstate, &font_face);
+    if (unlikely (status)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *) &_cairo_font_face_nil;
+    }
+
+    return font_face;
+}
+
+static cairo_status_t
+_cairo_default_context_font_extents (void *abstract_cr,
+				     cairo_font_extents_t *extents)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_get_font_extents (cr->gstate, extents);
+}
+
+static cairo_status_t
+_cairo_default_context_set_font_size (void *abstract_cr,
+				      double size)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_font_size (cr->gstate, size);
+}
+
+static cairo_status_t
+_cairo_default_context_set_font_matrix (void *abstract_cr,
+					const cairo_matrix_t *matrix)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_set_font_matrix (cr->gstate, matrix);
+}
+
+static void
+_cairo_default_context_get_font_matrix (void *abstract_cr,
+					cairo_matrix_t *matrix)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_get_font_matrix (cr->gstate, matrix);
+}
+
+static cairo_status_t
+_cairo_default_context_set_font_options (void *abstract_cr,
+					 const cairo_font_options_t *options)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_set_font_options (cr->gstate, options);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_default_context_get_font_options (void *abstract_cr,
+					 cairo_font_options_t *options)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    _cairo_gstate_get_font_options (cr->gstate, options);
+}
+
+static cairo_status_t
+_cairo_default_context_set_scaled_font (void *abstract_cr,
+					cairo_scaled_font_t *scaled_font)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_bool_t was_previous;
+    cairo_status_t status;
+
+    if (scaled_font == cr->gstate->scaled_font)
+	return CAIRO_STATUS_SUCCESS;
+
+    was_previous = scaled_font == cr->gstate->previous_scaled_font;
+
+    status = _cairo_gstate_set_font_face (cr->gstate, scaled_font->font_face);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_gstate_set_font_matrix (cr->gstate, &scaled_font->font_matrix);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gstate_set_font_options (cr->gstate, &scaled_font->options);
+
+    if (was_previous)
+	cr->gstate->scaled_font = cairo_scaled_font_reference (scaled_font);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_scaled_font_t *
+_cairo_default_context_get_scaled_font (void *abstract_cr)
+{
+    cairo_default_context_t *cr = abstract_cr;
+    cairo_scaled_font_t *scaled_font;
+    cairo_status_t status;
+
+    status = _cairo_gstate_get_scaled_font (cr->gstate, &scaled_font);
+    if (unlikely (status))
+	return _cairo_scaled_font_create_in_error (status);
+
+    return scaled_font;
+}
+
+static cairo_status_t
+_cairo_default_context_glyphs (void *abstract_cr,
+			       const cairo_glyph_t *glyphs,
+			       int num_glyphs,
+			       cairo_glyph_text_info_t *info)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_show_text_glyphs (cr->gstate, glyphs, num_glyphs, info);
+}
+
+static cairo_status_t
+_cairo_default_context_glyph_path (void *abstract_cr,
+				   const cairo_glyph_t *glyphs,
+				   int num_glyphs)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_glyph_path (cr->gstate,
+				     glyphs, num_glyphs,
+				     cr->path);
+}
+
+static cairo_status_t
+_cairo_default_context_glyph_extents (void                *abstract_cr,
+				      const cairo_glyph_t    *glyphs,
+				      int                    num_glyphs,
+				      cairo_text_extents_t   *extents)
+{
+    cairo_default_context_t *cr = abstract_cr;
+
+    return _cairo_gstate_glyph_extents (cr->gstate, glyphs, num_glyphs, extents);
+}
+
+static const cairo_backend_t _cairo_default_context_backend = {
+    CAIRO_TYPE_DEFAULT,
+    _cairo_default_context_destroy,
+
+    _cairo_default_context_get_original_target,
+    _cairo_default_context_get_current_target,
+
+    _cairo_default_context_save,
+    _cairo_default_context_restore,
+
+    _cairo_default_context_push_group,
+    _cairo_default_context_pop_group,
+
+    _cairo_default_context_set_source_rgba,
+    _cairo_default_context_set_source_surface,
+    _cairo_default_context_set_source,
+    _cairo_default_context_get_source,
+
+    _cairo_default_context_set_antialias,
+    _cairo_default_context_set_dash,
+    _cairo_default_context_set_fill_rule,
+    _cairo_default_context_set_line_cap,
+    _cairo_default_context_set_line_join,
+    _cairo_default_context_set_line_width,
+    _cairo_default_context_set_miter_limit,
+    _cairo_default_context_set_opacity,
+    _cairo_default_context_set_operator,
+    _cairo_default_context_set_tolerance,
+    _cairo_default_context_get_antialias,
+    _cairo_default_context_get_dash,
+    _cairo_default_context_get_fill_rule,
+    _cairo_default_context_get_line_cap,
+    _cairo_default_context_get_line_join,
+    _cairo_default_context_get_line_width,
+    _cairo_default_context_get_miter_limit,
+    _cairo_default_context_get_opacity,
+    _cairo_default_context_get_operator,
+    _cairo_default_context_get_tolerance,
+
+    _cairo_default_context_translate,
+    _cairo_default_context_scale,
+    _cairo_default_context_rotate,
+    _cairo_default_context_transform,
+    _cairo_default_context_set_matrix,
+    _cairo_default_context_set_identity_matrix,
+    _cairo_default_context_get_matrix,
+
+    _cairo_default_context_user_to_device,
+    _cairo_default_context_user_to_device_distance,
+    _cairo_default_context_device_to_user,
+    _cairo_default_context_device_to_user_distance,
+
+    _cairo_default_context_user_to_backend,
+    _cairo_default_context_user_to_backend_distance,
+    _cairo_default_context_backend_to_user,
+    _cairo_default_context_backend_to_user_distance,
+
+    _cairo_default_context_new_path,
+    _cairo_default_context_new_sub_path,
+    _cairo_default_context_move_to,
+    _cairo_default_context_rel_move_to,
+    _cairo_default_context_line_to,
+    _cairo_default_context_rel_line_to,
+    _cairo_default_context_curve_to,
+    _cairo_default_context_rel_curve_to,
+    NULL, /* arc-to */
+    NULL, /* rel-arc-to */
+    _cairo_default_context_close_path,
+    _cairo_default_context_arc,
+    _cairo_default_context_rectangle,
+    _cairo_default_context_path_extents,
+    _cairo_default_context_has_current_point,
+    _cairo_default_context_get_current_point,
+    _cairo_default_context_copy_path,
+    _cairo_default_context_copy_path_flat,
+    _cairo_default_context_append_path,
+
+    NULL, /* stroke-to-path */
+
+    _cairo_default_context_clip,
+    _cairo_default_context_clip_preserve,
+    _cairo_default_context_in_clip,
+    _cairo_default_context_clip_extents,
+    _cairo_default_context_reset_clip,
+    _cairo_default_context_copy_clip_rectangle_list,
+
+    _cairo_default_context_paint,
+    _cairo_default_context_paint_with_alpha,
+    _cairo_default_context_mask,
+
+    _cairo_default_context_stroke,
+    _cairo_default_context_stroke_preserve,
+    _cairo_default_context_in_stroke,
+    _cairo_default_context_stroke_extents,
+
+    _cairo_default_context_fill,
+    _cairo_default_context_fill_preserve,
+    _cairo_default_context_in_fill,
+    _cairo_default_context_fill_extents,
+
+    _cairo_default_context_set_font_face,
+    _cairo_default_context_get_font_face,
+    _cairo_default_context_set_font_size,
+    _cairo_default_context_set_font_matrix,
+    _cairo_default_context_get_font_matrix,
+    _cairo_default_context_set_font_options,
+    _cairo_default_context_get_font_options,
+    _cairo_default_context_set_scaled_font,
+    _cairo_default_context_get_scaled_font,
+    _cairo_default_context_font_extents,
+
+    _cairo_default_context_glyphs,
+    _cairo_default_context_glyph_path,
+    _cairo_default_context_glyph_extents,
+
+    _cairo_default_context_copy_page,
+    _cairo_default_context_show_page,
+
+    _cairo_default_context_tag_begin,
+    _cairo_default_context_tag_end,
+};
+
+cairo_status_t
+_cairo_default_context_init (cairo_default_context_t *cr, void *target)
+{
+    _cairo_init (&cr->base, &_cairo_default_context_backend);
+    _cairo_path_fixed_init (cr->path);
+
+    cr->gstate = &cr->gstate_tail[0];
+    cr->gstate_freelist = &cr->gstate_tail[1];
+    cr->gstate_tail[1].next = NULL;
+
+    return _cairo_gstate_init (cr->gstate, target);
+}
+
+cairo_t *
+_cairo_default_context_create (void *target)
+{
+    cairo_default_context_t *cr;
+    cairo_status_t status;
+
+    cr = _freed_pool_get (&context_pool);
+    if (unlikely (cr == NULL)) {
+	cr = _cairo_malloc (sizeof (cairo_default_context_t));
+	if (unlikely (cr == NULL))
+	    return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    status = _cairo_default_context_init (cr, target);
+    if (unlikely (status)) {
+	_freed_pool_put (&context_pool, cr);
+	return _cairo_create_in_error (status);
+    }
+
+    return &cr->base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-deflate-stream.c b/libs/cairo-1.16.0/src/cairo-deflate-stream.c
new file mode 100644
index 0000000..b51a639
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-deflate-stream.c
@@ -0,0 +1,156 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Author(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_DEFLATE_STREAM
+
+#include "cairo-error-private.h"
+#include "cairo-output-stream-private.h"
+#include <zlib.h>
+
+#define BUFFER_SIZE 16384
+
+typedef struct _cairo_deflate_stream {
+    cairo_output_stream_t  base;
+    cairo_output_stream_t *output;
+    z_stream               zlib_stream;
+    unsigned char          input_buf[BUFFER_SIZE];
+    unsigned char          output_buf[BUFFER_SIZE];
+} cairo_deflate_stream_t;
+
+static void
+cairo_deflate_stream_deflate (cairo_deflate_stream_t *stream, cairo_bool_t flush)
+{
+    int ret;
+    cairo_bool_t finished;
+
+    do {
+        ret = deflate (&stream->zlib_stream, flush ? Z_FINISH : Z_NO_FLUSH);
+        if (flush || stream->zlib_stream.avail_out == 0)
+        {
+            _cairo_output_stream_write (stream->output,
+                                        stream->output_buf,
+                                        BUFFER_SIZE - stream->zlib_stream.avail_out);
+            stream->zlib_stream.next_out = stream->output_buf;
+            stream->zlib_stream.avail_out = BUFFER_SIZE;
+        }
+
+        finished = TRUE;
+        if (stream->zlib_stream.avail_in != 0)
+            finished = FALSE;
+        if (flush && ret != Z_STREAM_END)
+            finished = FALSE;
+
+    } while (!finished);
+
+    stream->zlib_stream.next_in = stream->input_buf;
+}
+
+static cairo_status_t
+_cairo_deflate_stream_write (cairo_output_stream_t *base,
+                             const unsigned char   *data,
+                             unsigned int	    length)
+{
+    cairo_deflate_stream_t *stream = (cairo_deflate_stream_t *) base;
+    unsigned int count;
+    const unsigned char *p = data;
+
+    while (length) {
+        count = length;
+        if (count > BUFFER_SIZE - stream->zlib_stream.avail_in)
+            count = BUFFER_SIZE - stream->zlib_stream.avail_in;
+        memcpy (stream->input_buf + stream->zlib_stream.avail_in, p, count);
+        p += count;
+        stream->zlib_stream.avail_in += count;
+        length -= count;
+
+        if (stream->zlib_stream.avail_in == BUFFER_SIZE)
+            cairo_deflate_stream_deflate (stream, FALSE);
+    }
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+static cairo_status_t
+_cairo_deflate_stream_close (cairo_output_stream_t *base)
+{
+    cairo_deflate_stream_t *stream = (cairo_deflate_stream_t *) base;
+
+    cairo_deflate_stream_deflate (stream, TRUE);
+    deflateEnd (&stream->zlib_stream);
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+cairo_output_stream_t *
+_cairo_deflate_stream_create (cairo_output_stream_t *output)
+{
+    cairo_deflate_stream_t *stream;
+
+    if (output->status)
+	return _cairo_output_stream_create_in_error (output->status);
+
+    stream = _cairo_malloc (sizeof (cairo_deflate_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       _cairo_deflate_stream_write,
+			       NULL,
+			       _cairo_deflate_stream_close);
+    stream->output = output;
+
+    stream->zlib_stream.zalloc = Z_NULL;
+    stream->zlib_stream.zfree  = Z_NULL;
+    stream->zlib_stream.opaque  = Z_NULL;
+
+    if (deflateInit (&stream->zlib_stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
+	free (stream);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    stream->zlib_stream.next_in = stream->input_buf;
+    stream->zlib_stream.avail_in = 0;
+    stream->zlib_stream.next_out = stream->output_buf;
+    stream->zlib_stream.avail_out = BUFFER_SIZE;
+
+    return &stream->base;
+}
+
+#endif /* CAIRO_HAS_DEFLATE_STREAM */
diff --git a/libs/cairo-1.16.0/src/cairo-deprecated.h b/libs/cairo-1.16.0/src/cairo-deprecated.h
new file mode 100644
index 0000000..7a56aad
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-deprecated.h
@@ -0,0 +1,123 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_DEPRECATED_H
+#define CAIRO_DEPRECATED_H
+
+#define CAIRO_FONT_TYPE_ATSUI CAIRO_FONT_TYPE_QUARTZ
+
+/* Obsolete functions. These definitions exist to coerce the compiler
+ * into providing a little bit of guidance with its error
+ * messages. The idea is to help users port their old code without
+ * having to dig through lots of documentation.
+ *
+ * The first set of REPLACED_BY functions is for functions whose names
+ * have just been changed. So fixing these up is mechanical, (and
+ * automated by means of the cairo/util/cairo-api-update script.
+ *
+ * The second set of DEPRECATED_BY functions is for functions where
+ * the replacement is used in a different way, (ie. different
+ * arguments, multiple functions instead of one, etc). Fixing these up
+ * will require a bit more work on the user's part, (and hopefully we
+ * can get cairo-api-update to find these and print some guiding
+ * information).
+ */
+#define cairo_current_font_extents   cairo_current_font_extents_REPLACED_BY_cairo_font_extents
+#define cairo_get_font_extents       cairo_get_font_extents_REPLACED_BY_cairo_font_extents
+#define cairo_current_operator       cairo_current_operator_REPLACED_BY_cairo_get_operator
+#define cairo_current_tolerance	     cairo_current_tolerance_REPLACED_BY_cairo_get_tolerance
+#define cairo_current_point	     cairo_current_point_REPLACED_BY_cairo_get_current_point
+#define cairo_current_fill_rule	     cairo_current_fill_rule_REPLACED_BY_cairo_get_fill_rule
+#define cairo_current_line_width     cairo_current_line_width_REPLACED_BY_cairo_get_line_width
+#define cairo_current_line_cap       cairo_current_line_cap_REPLACED_BY_cairo_get_line_cap
+#define cairo_current_line_join      cairo_current_line_join_REPLACED_BY_cairo_get_line_join
+#define cairo_current_miter_limit    cairo_current_miter_limit_REPLACED_BY_cairo_get_miter_limit
+#define cairo_current_matrix         cairo_current_matrix_REPLACED_BY_cairo_get_matrix
+#define cairo_current_target_surface cairo_current_target_surface_REPLACED_BY_cairo_get_target
+#define cairo_get_status             cairo_get_status_REPLACED_BY_cairo_status
+#define cairo_concat_matrix		 cairo_concat_matrix_REPLACED_BY_cairo_transform
+#define cairo_scale_font                 cairo_scale_font_REPLACED_BY_cairo_set_font_size
+#define cairo_select_font                cairo_select_font_REPLACED_BY_cairo_select_font_face
+#define cairo_transform_font             cairo_transform_font_REPLACED_BY_cairo_set_font_matrix
+#define cairo_transform_point		 cairo_transform_point_REPLACED_BY_cairo_user_to_device
+#define cairo_transform_distance	 cairo_transform_distance_REPLACED_BY_cairo_user_to_device_distance
+#define cairo_inverse_transform_point	 cairo_inverse_transform_point_REPLACED_BY_cairo_device_to_user
+#define cairo_inverse_transform_distance cairo_inverse_transform_distance_REPLACED_BY_cairo_device_to_user_distance
+#define cairo_init_clip			 cairo_init_clip_REPLACED_BY_cairo_reset_clip
+#define cairo_surface_create_for_image	 cairo_surface_create_for_image_REPLACED_BY_cairo_image_surface_create_for_data
+#define cairo_default_matrix		 cairo_default_matrix_REPLACED_BY_cairo_identity_matrix
+#define cairo_matrix_set_affine		 cairo_matrix_set_affine_REPLACED_BY_cairo_matrix_init
+#define cairo_matrix_set_identity	 cairo_matrix_set_identity_REPLACED_BY_cairo_matrix_init_identity
+#define cairo_pattern_add_color_stop	 cairo_pattern_add_color_stop_REPLACED_BY_cairo_pattern_add_color_stop_rgba
+#define cairo_set_rgb_color		 cairo_set_rgb_color_REPLACED_BY_cairo_set_source_rgb
+#define cairo_set_pattern		 cairo_set_pattern_REPLACED_BY_cairo_set_source
+#define cairo_xlib_surface_create_for_pixmap_with_visual	cairo_xlib_surface_create_for_pixmap_with_visual_REPLACED_BY_cairo_xlib_surface_create
+#define cairo_xlib_surface_create_for_window_with_visual	cairo_xlib_surface_create_for_window_with_visual_REPLACED_BY_cairo_xlib_surface_create
+#define cairo_xcb_surface_create_for_pixmap_with_visual	cairo_xcb_surface_create_for_pixmap_with_visual_REPLACED_BY_cairo_xcb_surface_create
+#define cairo_xcb_surface_create_for_window_with_visual	cairo_xcb_surface_create_for_window_with_visual_REPLACED_BY_cairo_xcb_surface_create
+#define cairo_ps_surface_set_dpi	cairo_ps_surface_set_dpi_REPLACED_BY_cairo_surface_set_fallback_resolution
+#define cairo_pdf_surface_set_dpi	cairo_pdf_surface_set_dpi_REPLACED_BY_cairo_surface_set_fallback_resolution
+#define cairo_svg_surface_set_dpi	cairo_svg_surface_set_dpi_REPLACED_BY_cairo_surface_set_fallback_resolution
+#define cairo_atsui_font_face_create_for_atsu_font_id  cairo_atsui_font_face_create_for_atsu_font_id_REPLACED_BY_cairo_quartz_font_face_create_for_atsu_font_id
+
+#define cairo_current_path	     cairo_current_path_DEPRECATED_BY_cairo_copy_path
+#define cairo_current_path_flat	     cairo_current_path_flat_DEPRECATED_BY_cairo_copy_path_flat
+#define cairo_get_path		     cairo_get_path_DEPRECATED_BY_cairo_copy_path
+#define cairo_get_path_flat	     cairo_get_path_flat_DEPRECATED_BY_cairo_get_path_flat
+#define cairo_set_alpha		     cairo_set_alpha_DEPRECATED_BY_cairo_set_source_rgba_OR_cairo_paint_with_alpha
+#define cairo_show_surface	     cairo_show_surface_DEPRECATED_BY_cairo_set_source_surface_AND_cairo_paint
+#define cairo_copy		     cairo_copy_DEPRECATED_BY_cairo_create_AND_MANY_INDIVIDUAL_FUNCTIONS
+#define cairo_surface_set_repeat	cairo_surface_set_repeat_DEPRECATED_BY_cairo_pattern_set_extend
+#define cairo_surface_set_matrix	cairo_surface_set_matrix_DEPRECATED_BY_cairo_pattern_set_matrix
+#define cairo_surface_get_matrix	cairo_surface_get_matrix_DEPRECATED_BY_cairo_pattern_get_matrix
+#define cairo_surface_set_filter	cairo_surface_set_filter_DEPRECATED_BY_cairo_pattern_set_filter
+#define cairo_surface_get_filter	cairo_surface_get_filter_DEPRECATED_BY_cairo_pattern_get_filter
+#define cairo_matrix_create		cairo_matrix_create_DEPRECATED_BY_cairo_matrix_t
+#define cairo_matrix_destroy		cairo_matrix_destroy_DEPRECATED_BY_cairo_matrix_t
+#define cairo_matrix_copy		cairo_matrix_copy_DEPRECATED_BY_cairo_matrix_t
+#define cairo_matrix_get_affine		cairo_matrix_get_affine_DEPRECATED_BY_cairo_matrix_t
+#define cairo_set_target_surface	cairo_set_target_surface_DEPRECATED_BY_cairo_create
+#define cairo_set_target_image		cairo_set_target_image_DEPRECATED_BY_cairo_image_surface_create_for_data
+#define cairo_set_target_pdf		cairo_set_target_pdf_DEPRECATED_BY_cairo_pdf_surface_create
+#define cairo_set_target_png		cairo_set_target_png_DEPRECATED_BY_cairo_surface_write_to_png
+#define cairo_set_target_ps		cairo_set_target_ps_DEPRECATED_BY_cairo_ps_surface_create
+#define cairo_set_target_quartz		cairo_set_target_quartz_DEPRECATED_BY_cairo_quartz_surface_create
+#define cairo_set_target_win32		cairo_set_target_win32_DEPRECATED_BY_cairo_win32_surface_create
+#define cairo_set_target_xcb		cairo_set_target_xcb_DEPRECATED_BY_cairo_xcb_surface_create
+#define cairo_set_target_drawable	cairo_set_target_drawable_DEPRECATED_BY_cairo_xlib_surface_create
+#define cairo_get_status_string		cairo_get_status_string_DEPRECATED_BY_cairo_status_AND_cairo_status_to_string
+#define cairo_status_string		cairo_status_string_DEPRECATED_BY_cairo_status_AND_cairo_status_to_string
+
+#endif /* CAIRO_DEPRECATED_H */
diff --git a/libs/cairo-1.16.0/src/cairo-device-private.h b/libs/cairo-1.16.0/src/cairo-device-private.h
new file mode 100644
index 0000000..6eb44f3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-device-private.h
@@ -0,0 +1,86 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef _CAIRO_DEVICE_PRIVATE_H_
+#define _CAIRO_DEVICE_PRIVATE_H_
+
+#include "cairo-compiler-private.h"
+#include "cairo-mutex-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-types-private.h"
+
+struct _cairo_device {
+    cairo_reference_count_t ref_count;
+    cairo_status_t status;
+    cairo_user_data_array_t user_data;
+
+    const cairo_device_backend_t *backend;
+
+    cairo_recursive_mutex_t mutex;
+    unsigned mutex_depth;
+
+    cairo_bool_t finished;
+};
+
+struct _cairo_device_backend {
+    cairo_device_type_t type;
+
+    void (*lock) (void *device);
+    void (*unlock) (void *device);
+
+    cairo_warn cairo_status_t (*flush) (void *device);
+    void (*finish) (void *device);
+    void (*destroy) (void *device);
+};
+
+cairo_private cairo_device_t *
+_cairo_device_create_in_error (cairo_status_t status);
+
+cairo_private void
+_cairo_device_init (cairo_device_t *device,
+		    const cairo_device_backend_t *backend);
+
+cairo_private cairo_status_t
+_cairo_device_set_error (cairo_device_t *device,
+		         cairo_status_t error);
+
+slim_hidden_proto_no_warn (cairo_device_reference);
+slim_hidden_proto (cairo_device_acquire);
+slim_hidden_proto (cairo_device_release);
+slim_hidden_proto (cairo_device_flush);
+slim_hidden_proto (cairo_device_finish);
+slim_hidden_proto (cairo_device_destroy);
+
+#endif /* _CAIRO_DEVICE_PRIVATE_H_ */
diff --git a/libs/cairo-1.16.0/src/cairo-device.c b/libs/cairo-1.16.0/src/cairo-device.c
new file mode 100644
index 0000000..965c84c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-device.c
@@ -0,0 +1,545 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-device-private.h"
+#include "cairo-error-private.h"
+
+/**
+ * SECTION:cairo-device
+ * @Title: cairo_device_t
+ * @Short_Description: interface to underlying rendering system
+ * @See_Also: #cairo_surface_t
+ *
+ * Devices are the abstraction Cairo employs for the rendering system
+ * used by a #cairo_surface_t. You can get the device of a surface using
+ * cairo_surface_get_device().
+ *
+ * Devices are created using custom functions specific to the rendering
+ * system you want to use. See the documentation for the surface types
+ * for those functions.
+ *
+ * An important function that devices fulfill is sharing access to the
+ * rendering system between Cairo and your application. If you want to
+ * access a device directly that you used to draw to with Cairo, you must
+ * first call cairo_device_flush() to ensure that Cairo finishes all
+ * operations on the device and resets it to a clean state.
+ *
+ * Cairo also provides the functions cairo_device_acquire() and
+ * cairo_device_release() to synchronize access to the rendering system
+ * in a multithreaded environment. This is done internally, but can also
+ * be used by applications.
+ *
+ * Putting this all together, a function that works with devices should
+ * look something like this:
+ * <informalexample><programlisting>
+ * void
+ * my_device_modifying_function (cairo_device_t *device)
+ * {
+ *   cairo_status_t status;
+ *
+ *   // Ensure the device is properly reset
+ *   cairo_device_flush (device);
+ *   // Try to acquire the device
+ *   status = cairo_device_acquire (device);
+ *   if (status != CAIRO_STATUS_SUCCESS) {
+ *     printf ("Failed to acquire the device: %s\n", cairo_status_to_string (status));
+ *     return;
+ *   }
+ *
+ *   // Do the custom operations on the device here.
+ *   // But do not call any Cairo functions that might acquire devices.
+ *   
+ *   // Release the device when done.
+ *   cairo_device_release (device);
+ * }
+ * </programlisting></informalexample>
+ *
+ * <note><para>Please refer to the documentation of each backend for
+ * additional usage requirements, guarantees provided, and
+ * interactions with existing surface API of the device functions for
+ * surfaces of that type.
+ * </para></note>
+ **/
+
+static const cairo_device_t _nil_device = {
+    CAIRO_REFERENCE_COUNT_INVALID,
+    CAIRO_STATUS_NO_MEMORY,
+};
+
+static const cairo_device_t _mismatch_device = {
+    CAIRO_REFERENCE_COUNT_INVALID,
+    CAIRO_STATUS_DEVICE_TYPE_MISMATCH,
+};
+
+static const cairo_device_t _invalid_device = {
+    CAIRO_REFERENCE_COUNT_INVALID,
+    CAIRO_STATUS_DEVICE_ERROR,
+};
+
+cairo_device_t *
+_cairo_device_create_in_error (cairo_status_t status)
+{
+    switch (status) {
+    case CAIRO_STATUS_NO_MEMORY:
+	return (cairo_device_t *) &_nil_device;
+    case CAIRO_STATUS_DEVICE_ERROR:
+	return (cairo_device_t *) &_invalid_device;
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH:
+	return (cairo_device_t *) &_mismatch_device;
+
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	/* fall-through */
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH:
+    case CAIRO_STATUS_INVALID_STATUS:
+    case CAIRO_STATUS_INVALID_FORMAT:
+    case CAIRO_STATUS_INVALID_VISUAL:
+    case CAIRO_STATUS_READ_ERROR:
+    case CAIRO_STATUS_WRITE_ERROR:
+    case CAIRO_STATUS_FILE_NOT_FOUND:
+    case CAIRO_STATUS_TEMP_FILE_ERROR:
+    case CAIRO_STATUS_INVALID_STRIDE:
+    case CAIRO_STATUS_INVALID_SIZE:
+    case CAIRO_STATUS_INVALID_RESTORE:
+    case CAIRO_STATUS_INVALID_POP_GROUP:
+    case CAIRO_STATUS_NO_CURRENT_POINT:
+    case CAIRO_STATUS_INVALID_MATRIX:
+    case CAIRO_STATUS_NULL_POINTER:
+    case CAIRO_STATUS_INVALID_STRING:
+    case CAIRO_STATUS_INVALID_PATH_DATA:
+    case CAIRO_STATUS_SURFACE_FINISHED:
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH:
+    case CAIRO_STATUS_INVALID_DASH:
+    case CAIRO_STATUS_INVALID_DSC_COMMENT:
+    case CAIRO_STATUS_INVALID_INDEX:
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE:
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH:
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE:
+    case CAIRO_STATUS_USER_FONT_ERROR:
+    case CAIRO_STATUS_NEGATIVE_COUNT:
+    case CAIRO_STATUS_INVALID_CLUSTERS:
+    case CAIRO_STATUS_INVALID_SLANT:
+    case CAIRO_STATUS_INVALID_WEIGHT:
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED:
+    case CAIRO_STATUS_INVALID_CONTENT:
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
+    case CAIRO_STATUS_DEVICE_FINISHED:
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+    case CAIRO_STATUS_PNG_ERROR:
+    case CAIRO_STATUS_FREETYPE_ERROR:
+    case CAIRO_STATUS_WIN32_GDI_ERROR:
+    case CAIRO_STATUS_TAG_ERROR:
+    default:
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_device_t *) &_nil_device;
+    }
+}
+
+void
+_cairo_device_init (cairo_device_t *device,
+		    const cairo_device_backend_t *backend)
+{
+    CAIRO_REFERENCE_COUNT_INIT (&device->ref_count, 1);
+    device->status = CAIRO_STATUS_SUCCESS;
+
+    device->backend = backend;
+
+    CAIRO_RECURSIVE_MUTEX_INIT (device->mutex);
+    device->mutex_depth = 0;
+
+    device->finished = FALSE;
+
+    _cairo_user_data_array_init (&device->user_data);
+}
+
+/**
+ * cairo_device_reference:
+ * @device: a #cairo_device_t
+ *
+ * Increases the reference count on @device by one. This prevents
+ * @device from being destroyed until a matching call to
+ * cairo_device_destroy() is made.
+ *
+ * Use cairo_device_get_reference_count() to get the number of references
+ * to a #cairo_device_t.
+ *
+ * Return value: the referenced #cairo_device_t.
+ *
+ * Since: 1.10
+ **/
+cairo_device_t *
+cairo_device_reference (cairo_device_t *device)
+{
+    if (device == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count))
+    {
+	return device;
+    }
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&device->ref_count));
+    _cairo_reference_count_inc (&device->ref_count);
+
+    return device;
+}
+slim_hidden_def (cairo_device_reference);
+
+/**
+ * cairo_device_status:
+ * @device: a #cairo_device_t
+ *
+ * Checks whether an error has previously occurred for this
+ * device.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS on success or an error code if
+ *               the device is in an error state.
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_device_status (cairo_device_t *device)
+{
+    if (device == NULL)
+	return CAIRO_STATUS_NULL_POINTER;
+
+    return device->status;
+}
+
+/**
+ * cairo_device_flush:
+ * @device: a #cairo_device_t
+ *
+ * Finish any pending operations for the device and also restore any
+ * temporary modifications cairo has made to the device's state.
+ * This function must be called before switching from using the 
+ * device with Cairo to operating on it directly with native APIs.
+ * If the device doesn't support direct access, then this function
+ * does nothing.
+ *
+ * This function may acquire devices.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_device_flush (cairo_device_t *device)
+{
+    cairo_status_t status;
+
+    if (device == NULL || device->status)
+	return;
+
+    if (device->finished)
+	return;
+
+    if (device->backend->flush != NULL) {
+	status = device->backend->flush (device);
+	if (unlikely (status))
+	    status = _cairo_device_set_error (device, status);
+    }
+}
+slim_hidden_def (cairo_device_flush);
+
+/**
+ * cairo_device_finish:
+ * @device: the #cairo_device_t to finish
+ *
+ * This function finishes the device and drops all references to
+ * external resources. All surfaces, fonts and other objects created
+ * for this @device will be finished, too.
+ * Further operations on the @device will not affect the @device but
+ * will instead trigger a %CAIRO_STATUS_DEVICE_FINISHED error.
+ *
+ * When the last call to cairo_device_destroy() decreases the
+ * reference count to zero, cairo will call cairo_device_finish() if
+ * it hasn't been called already, before freeing the resources
+ * associated with the device.
+ *
+ * This function may acquire devices.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_device_finish (cairo_device_t *device)
+{
+    if (device == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count))
+    {
+	return;
+    }
+
+    if (device->finished)
+	return;
+
+    cairo_device_flush (device);
+
+    if (device->backend->finish != NULL)
+	device->backend->finish (device);
+
+    /* We only finish the device after the backend's callback returns because
+     * the device might still be needed during the callback
+     * (e.g. for cairo_device_acquire ()).
+     */
+    device->finished = TRUE;
+}
+slim_hidden_def (cairo_device_finish);
+
+/**
+ * cairo_device_destroy:
+ * @device: a #cairo_device_t
+ *
+ * Decreases the reference count on @device by one. If the result is
+ * zero, then @device and all associated resources are freed.  See
+ * cairo_device_reference().
+ *
+ * This function may acquire devices if the last reference was dropped.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_device_destroy (cairo_device_t *device)
+{
+    cairo_user_data_array_t user_data;
+
+    if (device == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count))
+    {
+	return;
+    }
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&device->ref_count));
+    if (! _cairo_reference_count_dec_and_test (&device->ref_count))
+	return;
+
+    cairo_device_finish (device);
+
+    assert (device->mutex_depth == 0);
+    CAIRO_MUTEX_FINI (device->mutex);
+
+    user_data = device->user_data;
+
+    device->backend->destroy (device);
+
+    _cairo_user_data_array_fini (&user_data);
+
+}
+slim_hidden_def (cairo_device_destroy);
+
+/**
+ * cairo_device_get_type:
+ * @device: a #cairo_device_t
+ *
+ * This function returns the type of the device. See #cairo_device_type_t
+ * for available types.
+ *
+ * Return value: The type of @device.
+ *
+ * Since: 1.10
+ **/
+cairo_device_type_t
+cairo_device_get_type (cairo_device_t *device)
+{
+    if (device == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count))
+    {
+	return CAIRO_DEVICE_TYPE_INVALID;
+    }
+
+    return device->backend->type;
+}
+
+/**
+ * cairo_device_acquire:
+ * @device: a #cairo_device_t
+ *
+ * Acquires the @device for the current thread. This function will block
+ * until no other thread has acquired the device.
+ *
+ * If the return value is %CAIRO_STATUS_SUCCESS, you successfully acquired the
+ * device. From now on your thread owns the device and no other thread will be
+ * able to acquire it until a matching call to cairo_device_release(). It is
+ * allowed to recursively acquire the device multiple times from the same
+ * thread.
+ *
+ * <note><para>You must never acquire two different devices at the same time
+ * unless this is explicitly allowed. Otherwise the possibility of deadlocks
+ * exist.
+ *
+ * As various Cairo functions can acquire devices when called, these functions
+ * may also cause deadlocks when you call them with an acquired device. So you
+ * must not have a device acquired when calling them. These functions are
+ * marked in the documentation.
+ * </para></note>
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS on success or an error code if
+ *               the device is in an error state and could not be
+ *               acquired. After a successful call to cairo_device_acquire(),
+ *               a matching call to cairo_device_release() is required.
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_device_acquire (cairo_device_t *device)
+{
+    if (device == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (unlikely (device->status))
+	return device->status;
+
+    if (unlikely (device->finished))
+	return _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_FINISHED);
+
+    CAIRO_MUTEX_LOCK (device->mutex);
+    if (device->mutex_depth++ == 0) {
+	if (device->backend->lock != NULL)
+	    device->backend->lock (device);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_device_acquire);
+
+/**
+ * cairo_device_release:
+ * @device: a #cairo_device_t
+ *
+ * Releases a @device previously acquired using cairo_device_acquire(). See
+ * that function for details.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_device_release (cairo_device_t *device)
+{
+    if (device == NULL)
+	return;
+
+    assert (device->mutex_depth > 0);
+
+    if (--device->mutex_depth == 0) {
+	if (device->backend->unlock != NULL)
+	    device->backend->unlock (device);
+    }
+
+    CAIRO_MUTEX_UNLOCK (device->mutex);
+}
+slim_hidden_def (cairo_device_release);
+
+cairo_status_t
+_cairo_device_set_error (cairo_device_t *device,
+			 cairo_status_t  status)
+{
+    if (status == CAIRO_STATUS_SUCCESS)
+        return CAIRO_STATUS_SUCCESS;
+
+    _cairo_status_set_error (&device->status, status);
+
+    return _cairo_error (status);
+}
+
+/**
+ * cairo_device_get_reference_count:
+ * @device: a #cairo_device_t
+ *
+ * Returns the current reference count of @device.
+ *
+ * Return value: the current reference count of @device.  If the
+ * object is a nil object, 0 will be returned.
+ *
+ * Since: 1.10
+ **/
+unsigned int
+cairo_device_get_reference_count (cairo_device_t *device)
+{
+    if (device == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count))
+	return 0;
+
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&device->ref_count);
+}
+
+/**
+ * cairo_device_get_user_data:
+ * @device: a #cairo_device_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Return user data previously attached to @device using the
+ * specified key.  If no user data has been attached with the given
+ * key this function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ *
+ * Since: 1.10
+ **/
+void *
+cairo_device_get_user_data (cairo_device_t		 *device,
+			    const cairo_user_data_key_t *key)
+{
+    return _cairo_user_data_array_get_data (&device->user_data,
+					    key);
+}
+
+/**
+ * cairo_device_set_user_data:
+ * @device: a #cairo_device_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach to the #cairo_device_t
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * #cairo_t is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attach user data to @device.  To remove user data from a surface,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_device_set_user_data (cairo_device_t		 *device,
+			    const cairo_user_data_key_t *key,
+			    void			 *user_data,
+			    cairo_destroy_func_t	  destroy)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count))
+	return device->status;
+
+    return _cairo_user_data_array_set_data (&device->user_data,
+					    key, user_data, destroy);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-directfb-surface.c b/libs/cairo-1.16.0/src/cairo-directfb-surface.c
new file mode 100644
index 0000000..0deedf0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-directfb-surface.c
@@ -0,0 +1,545 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-directfb.h"
+
+#include "cairo-clip-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-fallback-private.h"
+
+#include <pixman.h>
+
+#include <directfb.h>
+#include <direct/types.h>
+#include <direct/debug.h>
+#include <direct/memcpy.h>
+#include <direct/util.h>
+
+slim_hidden_proto(cairo_directfb_surface_create);
+
+typedef struct _cairo_dfb_surface {
+    cairo_image_surface_t image;
+
+    IDirectFB			*dfb;
+    IDirectFBSurface		*dfb_surface;
+
+    unsigned             blit_premultiplied : 1;
+} cairo_dfb_surface_t;
+
+static cairo_content_t
+_directfb_format_to_content (DFBSurfacePixelFormat format)
+{
+    cairo_content_t content = 0;
+
+    if (DFB_PIXELFORMAT_HAS_ALPHA (format))
+	content |= CAIRO_CONTENT_ALPHA;
+    if (DFB_COLOR_BITS_PER_PIXEL (format))
+	content |= CAIRO_CONTENT_COLOR_ALPHA;
+
+    assert(content);
+    return content;
+}
+
+static inline pixman_format_code_t
+_directfb_to_pixman_format (DFBSurfacePixelFormat format)
+{
+    switch (format) {
+    case DSPF_UNKNOWN: return 0;
+    case DSPF_ARGB1555: return PIXMAN_a1r5g5b5;
+    case DSPF_RGB16: return PIXMAN_r5g6b5;
+    case DSPF_RGB24: return PIXMAN_r8g8b8;
+    case DSPF_RGB32: return PIXMAN_x8r8g8b8;
+    case DSPF_ARGB: return PIXMAN_a8r8g8b8;
+    case DSPF_A8: return PIXMAN_a8;
+    case DSPF_YUY2: return PIXMAN_yuy2;
+    case DSPF_RGB332: return PIXMAN_r3g3b2;
+    case DSPF_UYVY: return 0;
+    case DSPF_I420: return 0;
+    case DSPF_YV12: return PIXMAN_yv12;
+    case DSPF_LUT8: return 0;
+    case DSPF_ALUT44: return 0;
+    case DSPF_AiRGB: return 0;
+    case DSPF_A1: return 0; /* bit reversed, oops */
+    case DSPF_NV12: return 0;
+    case DSPF_NV16: return 0;
+    case DSPF_ARGB2554: return 0;
+    case DSPF_ARGB4444: return PIXMAN_a4r4g4b4;
+    case DSPF_NV21: return 0;
+    case DSPF_AYUV: return 0;
+    case DSPF_A4: return PIXMAN_a4;
+    case DSPF_ARGB1666: return 0;
+    case DSPF_ARGB6666: return 0;
+    case DSPF_RGB18: return 0;
+    case DSPF_LUT2: return 0;
+    case DSPF_RGB444: return PIXMAN_x4r4g4b4;
+    case DSPF_RGB555: return PIXMAN_x1r5g5b5;
+#if DFB_NUM_PIXELFORMATS >= 29
+    case DSPF_BGR555: return PIXMAN_x1b5g5r5;
+#endif
+    }
+    return 0;
+}
+
+static cairo_surface_t *
+_cairo_dfb_surface_create_similar (void            *abstract_src,
+				   cairo_content_t  content,
+				   int              width,
+				   int              height)
+{
+    cairo_dfb_surface_t *other  = abstract_src;
+    DFBSurfacePixelFormat     format;
+    IDirectFBSurface      *buffer;
+    DFBSurfaceDescription  dsc;
+    cairo_surface_t *surface;
+
+    if (width <= 0 || height <= 0)
+	return _cairo_image_surface_create_with_content (content, width, height);
+
+    switch (content) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_CONTENT_COLOR_ALPHA:
+	format = DSPF_ARGB;
+	break;
+    case CAIRO_CONTENT_COLOR:
+	format = DSPF_RGB32;
+	break;
+    case CAIRO_CONTENT_ALPHA:
+	format = DSPF_A8;
+	break;
+    }
+
+    dsc.flags       = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT;
+    dsc.caps        = DSCAPS_PREMULTIPLIED;
+    dsc.width       = width;
+    dsc.height      = height;
+    dsc.pixelformat = format;
+
+    if (other->dfb->CreateSurface (other->dfb, &dsc, &buffer))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_DEVICE_ERROR));
+
+    surface = cairo_directfb_surface_create (other->dfb, buffer);
+    buffer->Release (buffer);
+
+    return surface;
+}
+
+static cairo_status_t
+_cairo_dfb_surface_finish (void *abstract_surface)
+{
+    cairo_dfb_surface_t *surface = abstract_surface;
+
+    surface->dfb_surface->Release (surface->dfb_surface);
+    return _cairo_image_surface_finish (abstract_surface);
+}
+
+static cairo_image_surface_t *
+_cairo_dfb_surface_map_to_image (void *abstract_surface,
+				 const cairo_rectangle_int_t *extents)
+{
+    cairo_dfb_surface_t *surface = abstract_surface;
+
+    if (surface->image.pixman_image == NULL) {
+	IDirectFBSurface *buffer = surface->dfb_surface;
+	pixman_image_t *image;
+	void *data;
+	int pitch;
+
+	if (buffer->Lock (buffer, DSLF_READ | DSLF_WRITE, &data, &pitch))
+	    return _cairo_image_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+	image = pixman_image_create_bits (surface->image.pixman_format,
+					  surface->image.width,
+					  surface->image.height,
+					  data, pitch);
+	if (image == NULL) {
+	    buffer->Unlock (buffer);
+	    return _cairo_image_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+	_cairo_image_surface_init (&surface->image, image, surface->image.pixman_format);
+    }
+
+    return _cairo_image_surface_map_to_image (&surface->image.base, extents);
+}
+
+static cairo_int_status_t
+_cairo_dfb_surface_unmap_image (void *abstract_surface,
+				cairo_image_surface_t *image)
+{
+    cairo_dfb_surface_t *surface = abstract_surface;
+    return _cairo_image_surface_unmap_image (&surface->image.base, image);
+}
+
+static cairo_status_t
+_cairo_dfb_surface_flush (void *abstract_surface,
+			  unsigned flags)
+{
+    cairo_dfb_surface_t *surface = abstract_surface;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->image.pixman_image) {
+	surface->dfb_surface->Unlock (surface->dfb_surface);
+
+	pixman_image_unref (surface->image.pixman_image);
+	surface->image.pixman_image = NULL;
+	surface->image.data = NULL;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if 0
+static inline DFBSurfacePixelFormat
+_directfb_from_pixman_format (pixman_format_code_t format)
+{
+    switch ((int) format) {
+    case PIXMAN_a1r5g5b5: return DSPF_ARGB1555;
+    case PIXMAN_r5g6b5: return DSPF_RGB16;
+    case PIXMAN_r8g8b8: return DSPF_RGB24;
+    case PIXMAN_x8r8g8b8: return DSPF_RGB32;
+    case PIXMAN_a8r8g8b8: return DSPF_ARGB;
+    case PIXMAN_a8: return DSPF_A8;
+    case PIXMAN_yuy2: return DSPF_YUY2;
+    case PIXMAN_r3g3b2: return DSPF_RGB332;
+    case PIXMAN_yv12: return DSPF_YV12;
+    case PIXMAN_a1: return DSPF_A1; /* bit reversed, oops */
+    case PIXMAN_a4r4g4b4: return DSPF_ARGB4444;
+    case PIXMAN_a4: return DSPF_A4;
+    case PIXMAN_x4r4g4b4: return DSPF_RGB444;
+    case PIXMAN_x1r5g5b5: return DSPF_RGB555;
+#if DFB_NUM_PIXELFORMATS >= 29
+    case PIXMAN_x1b5g5r5: return DSPF_BGR555;
+#endif
+    default: return 0;
+    }
+}
+
+static cairo_bool_t
+_directfb_get_operator (cairo_operator_t         operator,
+                        DFBSurfaceBlendFunction *ret_srcblend,
+                        DFBSurfaceBlendFunction *ret_dstblend)
+{
+    DFBSurfaceBlendFunction srcblend = DSBF_ONE;
+    DFBSurfaceBlendFunction dstblend = DSBF_ZERO;
+
+    switch (operator) {
+    case CAIRO_OPERATOR_CLEAR:
+	srcblend = DSBF_ZERO;
+	dstblend = DSBF_ZERO;
+	break;
+    case CAIRO_OPERATOR_SOURCE:
+	srcblend = DSBF_ONE;
+	dstblend = DSBF_ZERO;
+	break;
+    case CAIRO_OPERATOR_OVER:
+	srcblend = DSBF_ONE;
+	dstblend = DSBF_INVSRCALPHA;
+	break;
+    case CAIRO_OPERATOR_IN:
+	srcblend = DSBF_DESTALPHA;
+	dstblend = DSBF_ZERO;
+	break;
+    case CAIRO_OPERATOR_OUT:
+	srcblend = DSBF_INVDESTALPHA;
+	dstblend = DSBF_ZERO;
+	break;
+    case CAIRO_OPERATOR_ATOP:
+	srcblend = DSBF_DESTALPHA;
+	dstblend = DSBF_INVSRCALPHA;
+	break;
+    case CAIRO_OPERATOR_DEST:
+	srcblend = DSBF_ZERO;
+	dstblend = DSBF_ONE;
+	break;
+    case CAIRO_OPERATOR_DEST_OVER:
+	srcblend = DSBF_INVDESTALPHA;
+	dstblend = DSBF_ONE;
+	break;
+    case CAIRO_OPERATOR_DEST_IN:
+	srcblend = DSBF_ZERO;
+	dstblend = DSBF_SRCALPHA;
+	break;
+    case CAIRO_OPERATOR_DEST_OUT:
+	srcblend = DSBF_ZERO;
+	dstblend = DSBF_INVSRCALPHA;
+	break;
+    case CAIRO_OPERATOR_DEST_ATOP:
+	srcblend = DSBF_INVDESTALPHA;
+	dstblend = DSBF_SRCALPHA;
+	break;
+    case CAIRO_OPERATOR_XOR:
+	srcblend = DSBF_INVDESTALPHA;
+	dstblend = DSBF_INVSRCALPHA;
+	break;
+    case CAIRO_OPERATOR_ADD:
+	srcblend = DSBF_ONE;
+	dstblend = DSBF_ONE;
+	break;
+    case CAIRO_OPERATOR_SATURATE:
+	/* XXX This does not work. */
+#if 0
+	srcblend = DSBF_SRCALPHASAT;
+	dstblend = DSBF_ONE;
+	break;
+#endif
+    case CAIRO_OPERATOR_MULTIPLY:
+    case CAIRO_OPERATOR_SCREEN:
+    case CAIRO_OPERATOR_OVERLAY:
+    case CAIRO_OPERATOR_DARKEN:
+    case CAIRO_OPERATOR_LIGHTEN:
+    case CAIRO_OPERATOR_COLOR_DODGE:
+    case CAIRO_OPERATOR_COLOR_BURN:
+    case CAIRO_OPERATOR_HARD_LIGHT:
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+    case CAIRO_OPERATOR_DIFFERENCE:
+    case CAIRO_OPERATOR_EXCLUSION:
+    case CAIRO_OPERATOR_HSL_HUE:
+    case CAIRO_OPERATOR_HSL_SATURATION:
+    case CAIRO_OPERATOR_HSL_COLOR:
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+    default:
+	return FALSE;
+    }
+
+    *ret_srcblend = srcblend;
+    *ret_dstblend = dstblend;
+
+    return TRUE;
+}
+#define RUN_CLIPPED(surface, clip_region, clip, func) {\
+    if ((clip_region) != NULL) {\
+	int n_clips = cairo_region_num_rectangles (clip_region), n; \
+        for (n = 0; n < n_clips; n++) {\
+            if (clip) {\
+                DFBRegion  reg, *cli = (clip); \
+		cairo_rectangle_int_t rect; \
+		cairo_region_get_rectangle (clip_region, n, &rect); \
+		reg.x1 = rect.x; \
+		reg.y1 = rect.y; \
+		reg.x2 = rect.x + rect.width - 1; \
+		reg.y2 = rect.y + rect.height - 1; \
+                if (reg.x2 < cli->x1 || reg.y2 < cli->y1 ||\
+                    reg.x1 > cli->x2 || reg.y1 > cli->y2)\
+                    continue;\
+                if (reg.x1 < cli->x1)\
+                    reg.x1 = cli->x1;\
+                if (reg.y1 < cli->y1)\
+                    reg.y1 = cli->y1;\
+                if (reg.x2 > cli->x2)\
+                    reg.x2 = cli->x2;\
+                if (reg.y2 > cli->y2)\
+                    reg.y2 = cli->y2;\
+                (surface)->dfbsurface->SetClip ((surface)->dfbsurface, &reg);\
+            } else {\
+		DFBRegion reg; \
+		cairo_rectangle_int_t rect; \
+		cairo_region_get_rectangle (clip_region, n, &rect); \
+		reg.x1 = rect.x; \
+		reg.y1 = rect.y; \
+		reg.x2 = rect.x + rect.width - 1; \
+		reg.y2 = rect.y + rect.height - 1; \
+                (surface)->dfbsurface->SetClip ((surface)->dfbsurface, &reg); \
+            }\
+            func;\
+        }\
+    } else {\
+        (surface)->dfbsurface->SetClip ((surface)->dfbsurface, clip);\
+        func;\
+    }\
+}
+
+static cairo_int_status_t
+_cairo_dfb_surface_fill_rectangles (void                  *abstract_surface,
+                                         cairo_operator_t       op,
+                                         const cairo_color_t   *color,
+                                         cairo_rectangle_int_t *rects,
+                                         int                    n_rects)
+{
+    cairo_dfb_surface_t *dst   = abstract_surface;
+    DFBSurfaceDrawingFlags    flags;
+    DFBSurfaceBlendFunction   sblend;
+    DFBSurfaceBlendFunction   dblend;
+    DFBRectangle              r[n_rects];
+    int                       i;
+
+    D_DEBUG_AT (CairoDFB_Render,
+		"%s( dst=%p, op=%d, color=%p, rects=%p, n_rects=%d ).\n",
+		__FUNCTION__, dst, op, color, rects, n_rects);
+
+    if (! dst->supported_destination)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _directfb_get_operator (op, &sblend, &dblend))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (CAIRO_COLOR_IS_OPAQUE (color)) {
+	if (sblend == DSBF_SRCALPHA)
+	    sblend = DSBF_ONE;
+	else if (sblend == DSBF_INVSRCALPHA)
+	    sblend = DSBF_ZERO;
+
+	if (dblend == DSBF_SRCALPHA)
+	    dblend = DSBF_ONE;
+	else if (dblend == DSBF_INVSRCALPHA)
+	    dblend = DSBF_ZERO;
+    }
+    if ((dst->base.content & CAIRO_CONTENT_ALPHA) == 0) {
+	if (sblend == DSBF_DESTALPHA)
+	    sblend = DSBF_ONE;
+	else if (sblend == DSBF_INVDESTALPHA)
+	    sblend = DSBF_ZERO;
+
+	if (dblend == DSBF_DESTALPHA)
+	    dblend = DSBF_ONE;
+	else if (dblend == DSBF_INVDESTALPHA)
+	    dblend = DSBF_ZERO;
+    }
+
+    flags = (sblend == DSBF_ONE && dblend == DSBF_ZERO) ? DSDRAW_NOFX : DSDRAW_BLEND;
+    dst->dfbsurface->SetDrawingFlags (dst->dfbsurface, flags);
+    if (flags & DSDRAW_BLEND) {
+	dst->dfbsurface->SetSrcBlendFunction (dst->dfbsurface, sblend);
+	dst->dfbsurface->SetDstBlendFunction (dst->dfbsurface, dblend);
+    }
+
+    dst->dfbsurface->SetColor (dst->dfbsurface,
+			       color->red_short >> 8,
+			       color->green_short >> 8,
+			       color->blue_short >> 8,
+			       color->alpha_short >> 8);
+
+    for (i = 0; i < n_rects; i++) {
+	r[i].x = rects[i].x;
+	r[i].y = rects[i].y;
+	r[i].w = rects[i].width;
+	r[i].h = rects[i].height;
+    }
+
+    RUN_CLIPPED (dst, NULL, NULL,
+		 dst->dfbsurface->FillRectangles (dst->dfbsurface, r, n_rects));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+#endif
+
+static cairo_surface_backend_t
+_cairo_dfb_surface_backend = {
+    CAIRO_SURFACE_TYPE_DIRECTFB, /*type*/
+    _cairo_dfb_surface_finish, /*finish*/
+    _cairo_default_context_create,
+
+    _cairo_dfb_surface_create_similar,/*create_similar*/
+    NULL, /* create similar image */
+    _cairo_dfb_surface_map_to_image,
+    _cairo_dfb_surface_unmap_image,
+
+    _cairo_surface_default_source,
+    _cairo_surface_default_acquire_source_image,
+    _cairo_surface_default_release_source_image,
+    NULL,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_image_surface_get_extents,
+    _cairo_image_surface_get_font_options,
+
+    _cairo_dfb_surface_flush,
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_surface_fallback_paint,
+    _cairo_surface_fallback_mask,
+    _cairo_surface_fallback_stroke,
+    _cairo_surface_fallback_fill,
+    NULL, /* fill-stroke */
+    _cairo_surface_fallback_glyphs,
+};
+
+cairo_surface_t *
+cairo_directfb_surface_create (IDirectFB *dfb, IDirectFBSurface *dfbsurface)
+{
+    cairo_dfb_surface_t *surface;
+    DFBSurfacePixelFormat     format;
+    DFBSurfaceCapabilities caps;
+    pixman_format_code_t pixman_format;
+    int width, height;
+
+    D_ASSERT (dfb != NULL);
+    D_ASSERT (dfbsurface != NULL);
+
+    dfbsurface->GetPixelFormat (dfbsurface, &format);
+    dfbsurface->GetSize (dfbsurface, &width, &height);
+
+    pixman_format = _directfb_to_pixman_format (format);
+    if (! pixman_format_supported_destination (pixman_format))
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    surface = calloc (1, sizeof (cairo_dfb_surface_t));
+    if (surface == NULL)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    /* XXX dfb -> device */
+    _cairo_surface_init (&surface->image.base,
+                         &_cairo_dfb_surface_backend,
+			 NULL, /* device */
+			 _directfb_format_to_content (format),
+			 FALSE); /* is_vector */
+
+    surface->image.pixman_format = pixman_format;
+    surface->image.format = _cairo_format_from_pixman_format (pixman_format);
+
+    surface->image.width = width;
+    surface->image.height = height;
+    surface->image.depth = PIXMAN_FORMAT_DEPTH(pixman_format);
+
+    surface->dfb = dfb;
+    surface->dfb_surface = dfbsurface;
+    dfbsurface->AddRef (dfbsurface);
+
+    dfbsurface->GetCapabilities (dfbsurface, &caps);
+    if (caps & DSCAPS_PREMULTIPLIED)
+	surface->blit_premultiplied = TRUE;
+
+    return &surface->image.base;
+}
+slim_hidden_def(cairo_directfb_surface_create);
diff --git a/libs/cairo-1.16.0/src/cairo-directfb.h b/libs/cairo-1.16.0/src/cairo-directfb.h
new file mode 100644
index 0000000..e3d818c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-directfb.h
@@ -0,0 +1,67 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@isi.edu>
+ */
+
+/*
+ * Environment variables affecting the backend:
+ *
+ *  %CAIRO_DIRECTFB_NO_ACCEL (boolean)
+ *      if found, disables acceleration at all
+ *
+ *  %CAIRO_DIRECTFB_ARGB_FONT (boolean)
+ *      if found, enables using ARGB fonts instead of A8
+ */
+
+#ifndef CAIRO_DIRECTFB_H
+#define CAIRO_DIRECTFB_H
+
+#include "cairo.h"
+
+#if  CAIRO_HAS_DIRECTFB_SURFACE
+
+#include <directfb.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_directfb_surface_create (IDirectFB *dfb, IDirectFBSurface *surface);
+
+CAIRO_END_DECLS
+
+#else  /*CAIRO_HAS_DIRECTFB_SURFACE*/
+# error Cairo was not compiled with support for the directfb backend
+#endif /*CAIRO_HAS_DIRECTFB_SURFACE*/
+
+#endif /*CAIRO_DIRECTFB_H*/
diff --git a/libs/cairo-1.16.0/src/cairo-drm.h b/libs/cairo-1.16.0/src/cairo-drm.h
new file mode 100644
index 0000000..907610d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-drm.h
@@ -0,0 +1,120 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ */
+
+#ifndef CAIRO_DRM_H
+#define CAIRO_DRM_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_DRM_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+struct udev_device;
+
+cairo_public cairo_device_t *
+cairo_drm_device_get (struct udev_device *device);
+
+cairo_public cairo_device_t *
+cairo_drm_device_get_for_fd (int fd);
+
+cairo_public cairo_device_t *
+cairo_drm_device_default (void);
+
+cairo_public int
+cairo_drm_device_get_fd (cairo_device_t *device);
+
+cairo_public void
+cairo_drm_device_throttle (cairo_device_t *device);
+
+cairo_public cairo_surface_t *
+cairo_drm_surface_create (cairo_device_t *device,
+			  cairo_format_t format,
+			  int width, int height);
+
+cairo_public cairo_surface_t *
+cairo_drm_surface_create_for_name (cairo_device_t *device,
+				   unsigned int name,
+	                           cairo_format_t format,
+				   int width, int height, int stride);
+
+cairo_public cairo_surface_t *
+cairo_drm_surface_create_from_cacheable_image (cairo_device_t *device,
+	                                       cairo_surface_t *surface);
+
+cairo_public cairo_status_t
+cairo_drm_surface_enable_scan_out (cairo_surface_t *surface);
+
+cairo_public unsigned int
+cairo_drm_surface_get_handle (cairo_surface_t *surface);
+
+cairo_public unsigned int
+cairo_drm_surface_get_name (cairo_surface_t *surface);
+
+cairo_public cairo_format_t
+cairo_drm_surface_get_format (cairo_surface_t *surface);
+
+cairo_public int
+cairo_drm_surface_get_width (cairo_surface_t *surface);
+
+cairo_public int
+cairo_drm_surface_get_height (cairo_surface_t *surface);
+
+cairo_public int
+cairo_drm_surface_get_stride (cairo_surface_t *surface);
+
+/* XXX map/unmap, general surface layer? */
+
+/* Rough outline, culled from a conversation on IRC:
+ *   map() returns an image-surface representation of the drm-surface,
+ *   which you unmap() when you are finished, i.e. map() pulls the buffer back
+ *   from the GPU, maps it into the CPU domain and gives you direct access to
+ *   the pixels.  With the unmap(), the buffer is ready to be used again by the
+ *   GPU and *until* the unmap(), all operations will be done in software.
+ *
+ *  (Technically calling cairo_surface_flush() on the underlying drm-surface
+ *  will also disassociate the mapping.)
+*/
+cairo_public cairo_surface_t *
+cairo_drm_surface_map_to_image (cairo_surface_t *surface);
+
+cairo_public void
+cairo_drm_surface_unmap (cairo_surface_t *drm_surface,
+	                 cairo_surface_t *image_surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_DRM_SURFACE */
+# error Cairo was not compiled with support for the DRM backend
+#endif /* CAIRO_HAS_DRM_SURFACE */
+
+#endif /* CAIRO_DRM_H */
diff --git a/libs/cairo-1.16.0/src/cairo-egl-context.c b/libs/cairo-1.16.0/src/cairo-egl-context.c
new file mode 100644
index 0000000..bf704c6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-egl-context.c
@@ -0,0 +1,317 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-error-private.h"
+
+typedef struct _cairo_egl_context {
+    cairo_gl_context_t base;
+
+    EGLDisplay display;
+    EGLContext context;
+
+    EGLSurface dummy_surface;
+
+    EGLContext previous_context;
+    EGLSurface previous_surface;
+} cairo_egl_context_t;
+
+typedef struct _cairo_egl_surface {
+    cairo_gl_surface_t base;
+
+    EGLSurface egl;
+} cairo_egl_surface_t;
+
+
+static cairo_bool_t
+_context_acquisition_changed_egl_state (cairo_egl_context_t *ctx,
+					EGLSurface current_surface)
+{
+    return ctx->previous_context != ctx->context ||
+	   ctx->previous_surface != current_surface;
+}
+
+static EGLSurface
+_egl_get_current_surface (cairo_egl_context_t *ctx)
+{
+    if (ctx->base.current_target == NULL ||
+        _cairo_gl_surface_is_texture (ctx->base.current_target)) {
+	return  ctx->dummy_surface;
+    }
+
+    return ((cairo_egl_surface_t *) ctx->base.current_target)->egl;
+}
+
+static void
+_egl_query_current_state (cairo_egl_context_t *ctx)
+{
+    ctx->previous_surface = eglGetCurrentSurface (EGL_DRAW);
+    ctx->previous_context = eglGetCurrentContext ();
+
+    /* If any of the values were none, assume they are all none. Not all
+       drivers seem well behaved when it comes to using these values across
+       multiple threads. */
+    if (ctx->previous_surface == EGL_NO_SURFACE ||
+	ctx->previous_context == EGL_NO_CONTEXT) {
+	ctx->previous_surface = EGL_NO_SURFACE;
+	ctx->previous_context = EGL_NO_CONTEXT;
+    }
+}
+
+static void
+_egl_acquire (void *abstract_ctx)
+{
+    cairo_egl_context_t *ctx = abstract_ctx;
+    EGLSurface current_surface = _egl_get_current_surface (ctx);
+
+    _egl_query_current_state (ctx);
+    if (!_context_acquisition_changed_egl_state (ctx, current_surface))
+	return;
+
+    eglMakeCurrent (ctx->display,
+		    current_surface, current_surface, ctx->context);
+}
+
+static void
+_egl_release (void *abstract_ctx)
+{
+    cairo_egl_context_t *ctx = abstract_ctx;
+    if (!ctx->base.thread_aware ||
+	!_context_acquisition_changed_egl_state (ctx,
+						 _egl_get_current_surface (ctx))) {
+	return;
+    }
+
+    eglMakeCurrent (ctx->display,
+		    EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+}
+
+static void
+_egl_make_current (void *abstract_ctx,
+	           cairo_gl_surface_t *abstract_surface)
+{
+    cairo_egl_context_t *ctx = abstract_ctx;
+    cairo_egl_surface_t *surface = (cairo_egl_surface_t *) abstract_surface;
+
+    eglMakeCurrent(ctx->display, surface->egl, surface->egl, ctx->context);
+}
+
+static void
+_egl_swap_buffers (void *abstract_ctx,
+		   cairo_gl_surface_t *abstract_surface)
+{
+    cairo_egl_context_t *ctx = abstract_ctx;
+    cairo_egl_surface_t *surface = (cairo_egl_surface_t *) abstract_surface;
+
+    eglSwapBuffers (ctx->display, surface->egl);
+}
+
+static void
+_egl_destroy (void *abstract_ctx)
+{
+    cairo_egl_context_t *ctx = abstract_ctx;
+
+    eglMakeCurrent (ctx->display,
+		    EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    if (ctx->dummy_surface != EGL_NO_SURFACE)
+        eglDestroySurface (ctx->display, ctx->dummy_surface);
+}
+
+static cairo_bool_t
+_egl_make_current_surfaceless(cairo_egl_context_t *ctx)
+{
+    const char *extensions;
+
+    extensions = eglQueryString(ctx->display, EGL_EXTENSIONS);
+    if (strstr(extensions, "EGL_KHR_surfaceless_context") == NULL &&
+	strstr(extensions, "EGL_KHR_surfaceless_opengl") == NULL)
+	return FALSE;
+
+    if (!eglMakeCurrent(ctx->display,
+			EGL_NO_SURFACE, EGL_NO_SURFACE, ctx->context))
+	return FALSE;
+
+    return TRUE;
+}
+
+cairo_device_t *
+cairo_egl_device_create (EGLDisplay dpy, EGLContext egl)
+{
+    cairo_egl_context_t *ctx;
+    cairo_status_t status;
+    int attribs[] = {
+	EGL_WIDTH, 1,
+	EGL_HEIGHT, 1,
+	EGL_NONE,
+    };
+    EGLConfig config;
+    EGLint numConfigs;
+
+    ctx = calloc (1, sizeof (cairo_egl_context_t));
+    if (unlikely (ctx == NULL))
+	return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    ctx->display = dpy;
+    ctx->context = egl;
+
+    ctx->base.acquire = _egl_acquire;
+    ctx->base.release = _egl_release;
+    ctx->base.make_current = _egl_make_current;
+    ctx->base.swap_buffers = _egl_swap_buffers;
+    ctx->base.destroy = _egl_destroy;
+
+    /* We are about the change the current state of EGL, so we should
+     * query the pre-existing surface now instead of later. */
+    _egl_query_current_state (ctx);
+
+    if (!_egl_make_current_surfaceless (ctx)) {
+	/* Fall back to dummy surface, meh. */
+	EGLint config_attribs[] = {
+	    EGL_CONFIG_ID, 0,
+	    EGL_NONE
+	};
+
+	/*
+	 * In order to be able to make an egl context current when using a
+	 * pbuffer surface, that surface must have been created with a config
+	 * that is compatible with the context config. For Mesa, this means
+	 * that the configs must be the same.
+	 */
+	eglQueryContext (dpy, egl, EGL_CONFIG_ID, &config_attribs[1]);
+	eglChooseConfig (dpy, config_attribs, &config, 1, &numConfigs);
+
+	ctx->dummy_surface = eglCreatePbufferSurface (dpy, config, attribs);
+	if (ctx->dummy_surface == NULL) {
+	    free (ctx);
+	    return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	if (!eglMakeCurrent (dpy, ctx->dummy_surface, ctx->dummy_surface, egl)) {
+	    free (ctx);
+	    return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    status = _cairo_gl_dispatch_init (&ctx->base.dispatch, eglGetProcAddress);
+    if (unlikely (status)) {
+	free (ctx);
+	return _cairo_gl_context_create_in_error (status);
+    }
+
+    status = _cairo_gl_context_init (&ctx->base);
+    if (unlikely (status)) {
+	if (ctx->dummy_surface != EGL_NO_SURFACE)
+	    eglDestroySurface (dpy, ctx->dummy_surface);
+	free (ctx);
+	return _cairo_gl_context_create_in_error (status);
+    }
+
+    /* Tune the default VBO size to reduce overhead on embedded devices.
+     * This smaller size means that flushing needs to be done more often,
+     * but it is less demanding of scarce memory on embedded devices.
+     */
+    ctx->base.vbo_size = 16*1024;
+
+    eglMakeCurrent (dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+
+    return &ctx->base.base;
+}
+
+cairo_surface_t *
+cairo_gl_surface_create_for_egl (cairo_device_t	*device,
+				 EGLSurface	 egl,
+				 int		 width,
+				 int		 height)
+{
+    cairo_egl_surface_t *surface;
+
+    if (unlikely (device->status))
+	return _cairo_surface_create_in_error (device->status);
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+    if (width <= 0 || height <= 0)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    surface = calloc (1, sizeof (cairo_egl_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_gl_surface_init (device, &surface->base,
+			    CAIRO_CONTENT_COLOR_ALPHA, width, height);
+    surface->egl = egl;
+
+    return &surface->base.base;
+}
+
+static cairo_bool_t is_egl_device (cairo_device_t *device)
+{
+    return (device->backend != NULL &&
+	    device->backend->type == CAIRO_DEVICE_TYPE_GL);
+}
+
+static cairo_egl_context_t *to_egl_context (cairo_device_t *device)
+{
+    return (cairo_egl_context_t *) device;
+}
+
+EGLDisplay
+cairo_egl_device_get_display (cairo_device_t *device)
+{
+    if (! is_egl_device (device)) {
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	return EGL_NO_DISPLAY;
+    }
+
+    return to_egl_context (device)->display;
+}
+
+cairo_public EGLContext
+cairo_egl_device_get_context (cairo_device_t *device)
+{
+    if (! is_egl_device (device)) {
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	return EGL_NO_CONTEXT;
+    }
+
+    return to_egl_context (device)->context;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-error-inline.h b/libs/cairo-1.16.0/src/cairo-error-inline.h
new file mode 100644
index 0000000..9126c5e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-error-inline.h
@@ -0,0 +1,52 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef _CAIRO_ERROR_INLINE_H_
+#define _CAIRO_ERROR_INLINE_H_
+
+#include "cairo-error-private.h"
+
+CAIRO_BEGIN_DECLS
+
+static inline cairo_status_t
+_cairo_public_status (cairo_int_status_t status)
+{
+    assert (status <= CAIRO_INT_STATUS_LAST_STATUS);
+    return (cairo_status_t) status;
+}
+
+#endif /* _CAIRO_ERROR_INLINE_H_ */
diff --git a/libs/cairo-1.16.0/src/cairo-error-private.h b/libs/cairo-1.16.0/src/cairo-error-private.h
new file mode 100644
index 0000000..1ab57dd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-error-private.h
@@ -0,0 +1,131 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef _CAIRO_ERROR_PRIVATE_H_
+#define _CAIRO_ERROR_PRIVATE_H_
+
+#include "cairo.h"
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+
+#include <assert.h>
+
+CAIRO_BEGIN_DECLS
+
+/* _cairo_int_status: internal status
+ *
+ * Sure wish C had a real enum type so that this would be distinct
+ * from #cairo_status_t. Oh well, without that, I'll use this bogus 100
+ * offset.  We want to keep it fit in int8_t as the compiler may choose
+ * that for #cairo_status_t
+ */
+enum _cairo_int_status {
+    CAIRO_INT_STATUS_SUCCESS = 0,
+
+    CAIRO_INT_STATUS_NO_MEMORY,
+    CAIRO_INT_STATUS_INVALID_RESTORE,
+    CAIRO_INT_STATUS_INVALID_POP_GROUP,
+    CAIRO_INT_STATUS_NO_CURRENT_POINT,
+    CAIRO_INT_STATUS_INVALID_MATRIX,
+    CAIRO_INT_STATUS_INVALID_STATUS,
+    CAIRO_INT_STATUS_NULL_POINTER,
+    CAIRO_INT_STATUS_INVALID_STRING,
+    CAIRO_INT_STATUS_INVALID_PATH_DATA,
+    CAIRO_INT_STATUS_READ_ERROR,
+    CAIRO_INT_STATUS_WRITE_ERROR,
+    CAIRO_INT_STATUS_SURFACE_FINISHED,
+    CAIRO_INT_STATUS_SURFACE_TYPE_MISMATCH,
+    CAIRO_INT_STATUS_PATTERN_TYPE_MISMATCH,
+    CAIRO_INT_STATUS_INVALID_CONTENT,
+    CAIRO_INT_STATUS_INVALID_FORMAT,
+    CAIRO_INT_STATUS_INVALID_VISUAL,
+    CAIRO_INT_STATUS_FILE_NOT_FOUND,
+    CAIRO_INT_STATUS_INVALID_DASH,
+    CAIRO_INT_STATUS_INVALID_DSC_COMMENT,
+    CAIRO_INT_STATUS_INVALID_INDEX,
+    CAIRO_INT_STATUS_CLIP_NOT_REPRESENTABLE,
+    CAIRO_INT_STATUS_TEMP_FILE_ERROR,
+    CAIRO_INT_STATUS_INVALID_STRIDE,
+    CAIRO_INT_STATUS_FONT_TYPE_MISMATCH,
+    CAIRO_INT_STATUS_USER_FONT_IMMUTABLE,
+    CAIRO_INT_STATUS_USER_FONT_ERROR,
+    CAIRO_INT_STATUS_NEGATIVE_COUNT,
+    CAIRO_INT_STATUS_INVALID_CLUSTERS,
+    CAIRO_INT_STATUS_INVALID_SLANT,
+    CAIRO_INT_STATUS_INVALID_WEIGHT,
+    CAIRO_INT_STATUS_INVALID_SIZE,
+    CAIRO_INT_STATUS_USER_FONT_NOT_IMPLEMENTED,
+    CAIRO_INT_STATUS_DEVICE_TYPE_MISMATCH,
+    CAIRO_INT_STATUS_DEVICE_ERROR,
+    CAIRO_INT_STATUS_INVALID_MESH_CONSTRUCTION,
+    CAIRO_INT_STATUS_DEVICE_FINISHED,
+    CAIRO_INT_STATUS_JBIG2_GLOBAL_MISSING,
+    CAIRO_INT_STATUS_PNG_ERROR,
+    CAIRO_INT_STATUS_FREETYPE_ERROR,
+    CAIRO_INT_STATUS_WIN32_GDI_ERROR,
+    CAIRO_INT_STATUS_TAG_ERROR,
+
+    CAIRO_INT_STATUS_LAST_STATUS,
+
+    CAIRO_INT_STATUS_UNSUPPORTED = 100,
+    CAIRO_INT_STATUS_DEGENERATE,
+    CAIRO_INT_STATUS_NOTHING_TO_DO,
+    CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY,
+    CAIRO_INT_STATUS_IMAGE_FALLBACK,
+    CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN,
+};
+
+typedef enum _cairo_int_status cairo_int_status_t;
+
+#define _cairo_status_is_error(status) \
+    (status != CAIRO_STATUS_SUCCESS && status < CAIRO_STATUS_LAST_STATUS)
+
+#define _cairo_int_status_is_error(status) \
+    (status != CAIRO_INT_STATUS_SUCCESS && status < CAIRO_INT_STATUS_LAST_STATUS)
+
+cairo_private cairo_status_t
+_cairo_error (cairo_status_t status);
+
+/* hide compiler warnings when discarding the return value */
+#define _cairo_error_throw(status) do { \
+    cairo_status_t status__ = _cairo_error (status); \
+    (void) status__; \
+} while (0)
+
+CAIRO_END_DECLS
+
+#endif /* _CAIRO_ERROR_PRIVATE_H_ */
diff --git a/libs/cairo-1.16.0/src/cairo-error.c b/libs/cairo-1.16.0/src/cairo-error.c
new file mode 100644
index 0000000..1b9bd76
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-error.c
@@ -0,0 +1,73 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-private.h"
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+
+#include <assert.h>
+
+/**
+ * _cairo_error:
+ * @status: a status value indicating an error, (eg. not
+ * %CAIRO_STATUS_SUCCESS)
+ *
+ * Checks that status is an error status, but does nothing else.
+ *
+ * All assignments of an error status to any user-visible object
+ * within the cairo application should result in a call to
+ * _cairo_error().
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ *
+ * Return value: the error status.
+ **/
+cairo_status_t
+_cairo_error (cairo_status_t status)
+{
+    CAIRO_ENSURE_UNIQUE;
+    assert (_cairo_status_is_error (status));
+
+    return status;
+}
+
+COMPILE_TIME_ASSERT ((int)CAIRO_INT_STATUS_LAST_STATUS == (int)CAIRO_STATUS_LAST_STATUS);
diff --git a/libs/cairo-1.16.0/src/cairo-fallback-compositor.c b/libs/cairo-1.16.0/src/cairo-fallback-compositor.c
new file mode 100644
index 0000000..3f6199f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-fallback-compositor.c
@@ -0,0 +1,185 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-offset-private.h"
+
+/* high-level compositor interface */
+
+static cairo_int_status_t
+_cairo_fallback_compositor_paint (const cairo_compositor_t	*_compositor,
+				  cairo_composite_rectangles_t	*extents)
+{
+    cairo_image_surface_t *image;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
+
+    status = _cairo_surface_offset_paint (&image->base,
+					  extents->unbounded.x,
+					  extents->unbounded.y,
+					  extents->op,
+					  &extents->source_pattern.base,
+					  extents->clip);
+
+    return _cairo_surface_unmap_image (extents->surface, image);
+}
+
+static cairo_int_status_t
+_cairo_fallback_compositor_mask (const cairo_compositor_t	*_compositor,
+				 cairo_composite_rectangles_t	*extents)
+{
+    cairo_image_surface_t *image;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
+
+    status = _cairo_surface_offset_mask (&image->base,
+					 extents->unbounded.x,
+					 extents->unbounded.y,
+					 extents->op,
+					 &extents->source_pattern.base,
+					 &extents->mask_pattern.base,
+					 extents->clip);
+
+    return _cairo_surface_unmap_image (extents->surface, image);
+}
+
+static cairo_int_status_t
+_cairo_fallback_compositor_stroke (const cairo_compositor_t	*_compositor,
+				   cairo_composite_rectangles_t *extents,
+				   const cairo_path_fixed_t	*path,
+				   const cairo_stroke_style_t	*style,
+				   const cairo_matrix_t		*ctm,
+				   const cairo_matrix_t		*ctm_inverse,
+				   double			 tolerance,
+				   cairo_antialias_t		 antialias)
+{
+    cairo_image_surface_t *image;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
+
+    status = _cairo_surface_offset_stroke (&image->base,
+					   extents->unbounded.x,
+					   extents->unbounded.y,
+					   extents->op,
+					   &extents->source_pattern.base,
+					   path, style,
+					   ctm, ctm_inverse,
+					   tolerance,
+					   antialias,
+					   extents->clip);
+
+    return _cairo_surface_unmap_image (extents->surface, image);
+}
+
+static cairo_int_status_t
+_cairo_fallback_compositor_fill (const cairo_compositor_t	*_compositor,
+				 cairo_composite_rectangles_t *extents,
+				 const cairo_path_fixed_t	*path,
+				 cairo_fill_rule_t		 fill_rule,
+				 double				 tolerance,
+				 cairo_antialias_t		 antialias)
+{
+    cairo_image_surface_t *image;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
+
+    status = _cairo_surface_offset_fill (&image->base,
+					 extents->unbounded.x,
+					 extents->unbounded.y,
+					 extents->op,
+					 &extents->source_pattern.base,
+					 path,
+					 fill_rule, tolerance, antialias,
+					 extents->clip);
+
+    return _cairo_surface_unmap_image (extents->surface, image);
+}
+
+static cairo_int_status_t
+_cairo_fallback_compositor_glyphs (const cairo_compositor_t	*_compositor,
+				   cairo_composite_rectangles_t *extents,
+				   cairo_scaled_font_t		*scaled_font,
+				   cairo_glyph_t		*glyphs,
+				   int				 num_glyphs,
+				   cairo_bool_t			 overlap)
+{
+    cairo_image_surface_t *image;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
+
+    status = _cairo_surface_offset_glyphs (&image->base,
+					   extents->unbounded.x,
+					   extents->unbounded.y,
+					   extents->op,
+					   &extents->source_pattern.base,
+					   scaled_font, glyphs, num_glyphs,
+					   extents->clip);
+
+    return _cairo_surface_unmap_image (extents->surface, image);
+}
+
+const cairo_compositor_t _cairo_fallback_compositor = {
+     &__cairo_no_compositor,
+
+     _cairo_fallback_compositor_paint,
+     _cairo_fallback_compositor_mask,
+     _cairo_fallback_compositor_stroke,
+     _cairo_fallback_compositor_fill,
+     _cairo_fallback_compositor_glyphs,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-features-uninstalled.pc.in b/libs/cairo-1.16.0/src/cairo-features-uninstalled.pc.in
new file mode 100644
index 0000000..b9cd9d3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-features-uninstalled.pc.in
@@ -0,0 +1,7 @@
+Name: @FEATURE_PC@
+Description: @FEATURE_NAME@ for cairo graphics library
+Version: @VERSION@
+
+Requires: @FEATURE_BASE@ @FEATURE_REQUIRES@
+Libs: @FEATURE_NONPKGCONFIG_LIBS@ @FEATURE_NONPKGCONFIG_EXTRA_LIBS@
+Cflags: -I${pc_top_builddir}/${pcfiledir}/@srcdir@/src @FEATURE_NONPKGCONFIG_CFLAGS@
diff --git a/libs/cairo-1.16.0/src/cairo-features.pc.in b/libs/cairo-1.16.0/src/cairo-features.pc.in
new file mode 100644
index 0000000..9a4b657
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-features.pc.in
@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: @FEATURE_PC@
+Description: @FEATURE_NAME@ for cairo graphics library
+Version: @VERSION@
+
+Requires: @FEATURE_BASE@ @FEATURE_REQUIRES@
+Libs: @FEATURE_NONPKGCONFIG_LIBS@ @FEATURE_NONPKGCONFIG_EXTRA_LIBS@
+Cflags: -I${includedir}/cairo @FEATURE_NONPKGCONFIG_CFLAGS@
diff --git a/libs/cairo-1.16.0/src/cairo-fixed-private.h b/libs/cairo-1.16.0/src/cairo-fixed-private.h
new file mode 100644
index 0000000..5f9ce68
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-fixed-private.h
@@ -0,0 +1,395 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#ifndef CAIRO_FIXED_PRIVATE_H
+#define CAIRO_FIXED_PRIVATE_H
+
+#include "cairo-fixed-type-private.h"
+
+#include "cairo-wideint-private.h"
+#include "cairoint.h"
+
+/* Implementation */
+
+#if (CAIRO_FIXED_BITS != 32)
+# error CAIRO_FIXED_BITS must be 32, and the type must be a 32-bit type.
+# error To remove this limitation, you will have to fix the tessellator.
+#endif
+
+#define CAIRO_FIXED_ONE        ((cairo_fixed_t)(1 << CAIRO_FIXED_FRAC_BITS))
+#define CAIRO_FIXED_ONE_DOUBLE ((double)(1 << CAIRO_FIXED_FRAC_BITS))
+#define CAIRO_FIXED_EPSILON    ((cairo_fixed_t)(1))
+
+#define CAIRO_FIXED_ERROR_DOUBLE (1. / (2 * CAIRO_FIXED_ONE_DOUBLE))
+
+#define CAIRO_FIXED_FRAC_MASK  ((cairo_fixed_t)(((cairo_fixed_unsigned_t)(-1)) >> (CAIRO_FIXED_BITS - CAIRO_FIXED_FRAC_BITS)))
+#define CAIRO_FIXED_WHOLE_MASK (~CAIRO_FIXED_FRAC_MASK)
+
+static inline cairo_fixed_t
+_cairo_fixed_from_int (int i)
+{
+    return i << CAIRO_FIXED_FRAC_BITS;
+}
+
+/* This is the "magic number" approach to converting a double into fixed
+ * point as described here:
+ *
+ * http://www.stereopsis.com/sree/fpu2006.html (an overview)
+ * http://www.d6.com/users/checker/pdfs/gdmfp.pdf (in detail)
+ *
+ * The basic idea is to add a large enough number to the double that the
+ * literal floating point is moved up to the extent that it forces the
+ * double's value to be shifted down to the bottom of the mantissa (to make
+ * room for the large number being added in). Since the mantissa is, at a
+ * given moment in time, a fixed point integer itself, one can convert a
+ * float to various fixed point representations by moving around the point
+ * of a floating point number through arithmetic operations. This behavior
+ * is reliable on most modern platforms as it is mandated by the IEEE-754
+ * standard for floating point arithmetic.
+ *
+ * For our purposes, a "magic number" must be carefully selected that is
+ * both large enough to produce the desired point-shifting effect, and also
+ * has no lower bits in its representation that would interfere with our
+ * value at the bottom of the mantissa. The magic number is calculated as
+ * follows:
+ *
+ *          (2 ^ (MANTISSA_SIZE - FRACTIONAL_SIZE)) * 1.5
+ *
+ * where in our case:
+ *  - MANTISSA_SIZE for 64-bit doubles is 52
+ *  - FRACTIONAL_SIZE for 16.16 fixed point is 16
+ *
+ * Although this approach provides a very large speedup of this function
+ * on a wide-array of systems, it does come with two caveats:
+ *
+ * 1) It uses banker's rounding as opposed to arithmetic rounding.
+ * 2) It doesn't function properly if the FPU is in single-precision
+ *    mode.
+ */
+
+/* The 16.16 number must always be available */
+#define CAIRO_MAGIC_NUMBER_FIXED_16_16 (103079215104.0)
+
+#if CAIRO_FIXED_BITS <= 32
+#define CAIRO_MAGIC_NUMBER_FIXED ((1LL << (52 - CAIRO_FIXED_FRAC_BITS)) * 1.5)
+
+/* For 32-bit fixed point numbers */
+static inline cairo_fixed_t
+_cairo_fixed_from_double (double d)
+{
+    union {
+        double d;
+        int32_t i[2];
+    } u;
+
+    u.d = d + CAIRO_MAGIC_NUMBER_FIXED;
+#ifdef FLOAT_WORDS_BIGENDIAN
+    return u.i[1];
+#else
+    return u.i[0];
+#endif
+}
+
+#else
+# error Please define a magic number for your fixed point type!
+# error See cairo-fixed-private.h for details.
+#endif
+
+static inline cairo_fixed_t
+_cairo_fixed_from_26_6 (uint32_t i)
+{
+#if CAIRO_FIXED_FRAC_BITS > 6
+    return i << (CAIRO_FIXED_FRAC_BITS - 6);
+#else
+    return i >> (6 - CAIRO_FIXED_FRAC_BITS);
+#endif
+}
+
+static inline cairo_fixed_t
+_cairo_fixed_from_16_16 (uint32_t i)
+{
+#if CAIRO_FIXED_FRAC_BITS > 16
+    return i << (CAIRO_FIXED_FRAC_BITS - 16);
+#else
+    return i >> (16 - CAIRO_FIXED_FRAC_BITS);
+#endif
+}
+
+static inline double
+_cairo_fixed_to_double (cairo_fixed_t f)
+{
+    return ((double) f) / CAIRO_FIXED_ONE_DOUBLE;
+}
+
+static inline int
+_cairo_fixed_is_integer (cairo_fixed_t f)
+{
+    return (f & CAIRO_FIXED_FRAC_MASK) == 0;
+}
+
+static inline cairo_fixed_t
+_cairo_fixed_floor (cairo_fixed_t f)
+{
+    return f & ~CAIRO_FIXED_FRAC_MASK;
+}
+
+static inline cairo_fixed_t
+_cairo_fixed_ceil (cairo_fixed_t f)
+{
+    return _cairo_fixed_floor (f + CAIRO_FIXED_FRAC_MASK);
+}
+
+static inline cairo_fixed_t
+_cairo_fixed_round (cairo_fixed_t f)
+{
+    return _cairo_fixed_floor (f + (CAIRO_FIXED_FRAC_MASK+1)/2);
+}
+
+static inline cairo_fixed_t
+_cairo_fixed_round_down (cairo_fixed_t f)
+{
+    return _cairo_fixed_floor (f + CAIRO_FIXED_FRAC_MASK/2);
+}
+
+static inline int
+_cairo_fixed_integer_part (cairo_fixed_t f)
+{
+    return f >> CAIRO_FIXED_FRAC_BITS;
+}
+
+static inline int
+_cairo_fixed_integer_round (cairo_fixed_t f)
+{
+    return _cairo_fixed_integer_part (f + (CAIRO_FIXED_FRAC_MASK+1)/2);
+}
+
+static inline int
+_cairo_fixed_integer_round_down (cairo_fixed_t f)
+{
+    return _cairo_fixed_integer_part (f + CAIRO_FIXED_FRAC_MASK/2);
+}
+
+static inline int
+_cairo_fixed_fractional_part (cairo_fixed_t f)
+{
+    return f & CAIRO_FIXED_FRAC_MASK;
+}
+
+static inline int
+_cairo_fixed_integer_floor (cairo_fixed_t f)
+{
+    if (f >= 0)
+        return f >> CAIRO_FIXED_FRAC_BITS;
+    else
+        return -((-f - 1) >> CAIRO_FIXED_FRAC_BITS) - 1;
+}
+
+static inline int
+_cairo_fixed_integer_ceil (cairo_fixed_t f)
+{
+    if (f > 0)
+	return ((f - 1)>>CAIRO_FIXED_FRAC_BITS) + 1;
+    else
+	return - ((cairo_fixed_t)(-(cairo_fixed_unsigned_t)f) >> CAIRO_FIXED_FRAC_BITS);
+}
+
+/* A bunch of explicit 16.16 operators; we need these
+ * to interface with pixman and other backends that require
+ * 16.16 fixed point types.
+ */
+static inline cairo_fixed_16_16_t
+_cairo_fixed_to_16_16 (cairo_fixed_t f)
+{
+#if (CAIRO_FIXED_FRAC_BITS == 16) && (CAIRO_FIXED_BITS == 32)
+    return f;
+#elif CAIRO_FIXED_FRAC_BITS > 16
+    /* We're just dropping the low bits, so we won't ever got over/underflow here */
+    return f >> (CAIRO_FIXED_FRAC_BITS - 16);
+#else
+    cairo_fixed_16_16_t x;
+
+    /* Handle overflow/underflow by clamping to the lowest/highest
+     * value representable as 16.16
+     */
+    if ((f >> CAIRO_FIXED_FRAC_BITS) < INT16_MIN) {
+	x = INT32_MIN;
+    } else if ((f >> CAIRO_FIXED_FRAC_BITS) > INT16_MAX) {
+	x = INT32_MAX;
+    } else {
+	x = f << (16 - CAIRO_FIXED_FRAC_BITS);
+    }
+
+    return x;
+#endif
+}
+
+static inline cairo_fixed_16_16_t
+_cairo_fixed_16_16_from_double (double d)
+{
+    union {
+        double d;
+        int32_t i[2];
+    } u;
+
+    u.d = d + CAIRO_MAGIC_NUMBER_FIXED_16_16;
+#ifdef FLOAT_WORDS_BIGENDIAN
+    return u.i[1];
+#else
+    return u.i[0];
+#endif
+}
+
+static inline int
+_cairo_fixed_16_16_floor (cairo_fixed_16_16_t f)
+{
+    if (f >= 0)
+	return f >> 16;
+    else
+	return -((-f - 1) >> 16) - 1;
+}
+
+static inline double
+_cairo_fixed_16_16_to_double (cairo_fixed_16_16_t f)
+{
+    return ((double) f) / (double) (1 << 16);
+}
+
+#if CAIRO_FIXED_BITS == 32
+
+static inline cairo_fixed_t
+_cairo_fixed_mul (cairo_fixed_t a, cairo_fixed_t b)
+{
+    cairo_int64_t temp = _cairo_int32x32_64_mul (a, b);
+    return _cairo_int64_to_int32(_cairo_int64_rsl (temp, CAIRO_FIXED_FRAC_BITS));
+}
+
+/* computes round (a * b / c) */
+static inline cairo_fixed_t
+_cairo_fixed_mul_div (cairo_fixed_t a, cairo_fixed_t b, cairo_fixed_t c)
+{
+    cairo_int64_t ab  = _cairo_int32x32_64_mul (a, b);
+    cairo_int64_t c64 = _cairo_int32_to_int64 (c);
+    return _cairo_int64_to_int32 (_cairo_int64_divrem (ab, c64).quo);
+}
+
+/* computes floor (a * b / c) */
+static inline cairo_fixed_t
+_cairo_fixed_mul_div_floor (cairo_fixed_t a, cairo_fixed_t b, cairo_fixed_t c)
+{
+    return _cairo_int64_32_div (_cairo_int32x32_64_mul (a, b), c);
+}
+
+/* compute y from x so that (x,y), p1, and p2 are collinear */
+static inline cairo_fixed_t
+_cairo_edge_compute_intersection_y_for_x (const cairo_point_t *p1,
+					  const cairo_point_t *p2,
+					  cairo_fixed_t x)
+{
+    cairo_fixed_t y, dx;
+
+    if (x == p1->x)
+	return p1->y;
+    if (x == p2->x)
+	return p2->y;
+
+    y = p1->y;
+    dx = p2->x - p1->x;
+    if (dx != 0)
+	y += _cairo_fixed_mul_div_floor (x - p1->x, p2->y - p1->y, dx);
+
+    return y;
+}
+
+/* compute x from y so that (x,y), p1, and p2 are collinear */
+static inline cairo_fixed_t
+_cairo_edge_compute_intersection_x_for_y (const cairo_point_t *p1,
+					  const cairo_point_t *p2,
+					  cairo_fixed_t y)
+{
+    cairo_fixed_t x, dy;
+
+    if (y == p1->y)
+	return p1->x;
+    if (y == p2->y)
+	return p2->x;
+
+    x = p1->x;
+    dy = p2->y - p1->y;
+    if (dy != 0)
+	x += _cairo_fixed_mul_div_floor (y - p1->y, p2->x - p1->x, dy);
+
+    return x;
+}
+
+/* Intersect two segments based on the algorithm described at
+ * http://paulbourke.net/geometry/pointlineplane/. This implementation
+ * uses floating point math. */
+static inline cairo_bool_t
+_slow_segment_intersection (const cairo_point_t *seg1_p1,
+			    const cairo_point_t *seg1_p2,
+			    const cairo_point_t *seg2_p1,
+			    const cairo_point_t *seg2_p2,
+			    cairo_point_t *intersection)
+{
+    double denominator, u_a, u_b;
+    double seg1_dx, seg1_dy, seg2_dx, seg2_dy, seg_start_dx, seg_start_dy;
+
+    seg1_dx = _cairo_fixed_to_double (seg1_p2->x - seg1_p1->x);
+    seg1_dy = _cairo_fixed_to_double (seg1_p2->y - seg1_p1->y);
+    seg2_dx = _cairo_fixed_to_double (seg2_p2->x - seg2_p1->x);
+    seg2_dy = _cairo_fixed_to_double (seg2_p2->y - seg2_p1->y);
+    denominator = (seg2_dy * seg1_dx) - (seg2_dx * seg1_dy);
+    if (denominator == 0)
+	return FALSE;
+
+    seg_start_dx = _cairo_fixed_to_double (seg1_p1->x - seg2_p1->x);
+    seg_start_dy = _cairo_fixed_to_double (seg1_p1->y - seg2_p1->y);
+    u_a = ((seg2_dx * seg_start_dy) - (seg2_dy * seg_start_dx)) / denominator;
+    u_b = ((seg1_dx * seg_start_dy) - (seg1_dy * seg_start_dx)) / denominator;
+
+    if (u_a <= 0 || u_a >= 1 || u_b <= 0 || u_b >= 1)
+	return FALSE;
+
+    intersection->x = seg1_p1->x + _cairo_fixed_from_double ((u_a * seg1_dx));
+    intersection->y = seg1_p1->y + _cairo_fixed_from_double ((u_a * seg1_dy));
+    return TRUE;
+}
+
+#else
+# error Please define multiplication and other operands for your fixed-point type size
+#endif
+
+#endif /* CAIRO_FIXED_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-fixed-type-private.h b/libs/cairo-1.16.0/src/cairo-fixed-type-private.h
new file mode 100644
index 0000000..e9f26f6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-fixed-type-private.h
@@ -0,0 +1,75 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#ifndef CAIRO_FIXED_TYPE_PRIVATE_H
+#define CAIRO_FIXED_TYPE_PRIVATE_H
+
+#include "cairo-wideint-type-private.h"
+
+/*
+ * Fixed-point configuration
+ */
+
+typedef int32_t		cairo_fixed_16_16_t;
+typedef cairo_int64_t	cairo_fixed_32_32_t;
+typedef cairo_int64_t	cairo_fixed_48_16_t;
+typedef cairo_int128_t	cairo_fixed_64_64_t;
+typedef cairo_int128_t	cairo_fixed_96_32_t;
+
+/* Eventually, we should allow changing this, but I think
+ * there are some assumptions in the tessellator about the
+ * size of a fixed type.  For now, it must be 32.
+ */
+#define CAIRO_FIXED_BITS	32
+
+/* The number of fractional bits.  Changing this involves
+ * making sure that you compute a double-to-fixed magic number.
+ * (see below).
+ */
+#define CAIRO_FIXED_FRAC_BITS	8
+
+/* A signed type %CAIRO_FIXED_BITS in size; the main fixed point type */
+typedef int32_t cairo_fixed_t;
+
+/* An unsigned type of the same size as #cairo_fixed_t */
+typedef uint32_t cairo_fixed_unsigned_t;
+
+typedef struct _cairo_point {
+    cairo_fixed_t x;
+    cairo_fixed_t y;
+} cairo_point_t;
+
+#endif /* CAIRO_FIXED_TYPE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-fixed.c b/libs/cairo-1.16.0/src/cairo-fixed.c
new file mode 100644
index 0000000..03e0559
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-fixed.c
@@ -0,0 +1,39 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-fixed-private.h"
diff --git a/libs/cairo-1.16.0/src/cairo-font-face-twin-data.c b/libs/cairo-1.16.0/src/cairo-font-face-twin-data.c
new file mode 100644
index 0000000..ff09cb2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-font-face-twin-data.c
@@ -0,0 +1,1072 @@
+/* See cairo-font-face-twin.c for copyright info */
+
+#include "cairoint.h"
+
+const int8_t _cairo_twin_outlines[] = {
+/* 0x0 '\0'  offset 0 */
+    0, 24, 42, 0, 2, 2,
+    0, 24, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 24, -42,
+    'l', 24, 0,
+    'l', 0, 0,
+    'e',
+    'X', 'X',
+/* 0x20 ' '  offset 28 */
+    0, 4, 0, 0, 0, 0,
+    /* snap_x */
+    /* snap_y */
+    'e',
+    'X', 'X', 'X',
+    'X', 'X',
+/* 0x21 '!'  offset 40 */
+    0, 0, 42, 0, 1, 3,
+    0, /* snap_x */
+    -42, -14, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, -14,
+    'm', 0, 0,
+    'l', 0, 0,
+    'e',
+    'X', 'X', 'X', 'X', 'X', 'X',
+    'X', 'X', 'X', 'X', 'X', 'X',
+    'X', 'X', 'X', 'X', 'X', 'X',
+    'X', 'X', 'X', 'X', 'X', 'X',
+    'X', 'X', 'X',
+/* 0x22 '"'  offset 90 */
+    0, 16, 42, -28, 2, 2,
+    0, 16, /* snap_x */
+    -42, -28, /* snap_y */
+    'm', 0, -42,
+    'l', 0, -28,
+    'm', 16, -42,
+    'l', 16, -28,
+    'e',
+    'X',
+/* 0x23 '#'  offset 114 */
+    0, 30, 50, 14, 2, 5,
+    0, 30, /* snap_x */
+    -24, -21, -15, -12, 0, /* snap_y */
+    'm', 16, -50,
+    'l', 2, 14,
+    'm', 28, -50,
+    'l', 14, 14,
+    'm', 2, -24,
+    'l', 30, -24,
+    'm', 0, -12,
+    'l', 28, -12,
+    'e',
+/* 0x24 '$'  offset 152 */
+    0, 28, 50, 8, 4, 4,
+    0, 10, 18, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 10, -50,
+    'l', 10, 8,
+    'm', 18, -50,
+    'l', 18, 8,
+    'm', 28, -36,
+    'c', 24, -42, 18, -42, 14, -42,
+    'c', 10, -42, 0, -42, 0, -34,
+    'c', 0, -25, 8, -24, 14, -22,
+    'c', 20, -20, 28, -19, 28, -9,
+    'c', 28, 0, 18, 0, 14, 0,
+    'c', 10, 0, 4, 0, 0, -6,
+    'e',
+/* 0x25 '%'  offset 224 */
+    0, 36, 42, 0, 4, 7,
+    0, 14, 22, 36, /* snap_x */
+    -42, -38, -28, -21, -15, -14, 0, /* snap_y */
+    'm', 10, -42,
+    'c', 12, -41, 14, -40, 14, -36,
+    'c', 14, -30, 11, -28, 6, -28,
+    'c', 2, -28, 0, -30, 0, -34,
+    'c', 0, -39, 3, -42, 8, -42,
+    'l', 10, -42,
+    'c', 18, -37, 28, -37, 36, -42,
+    'l', 0, 0,
+    'm', 28, -14,
+    'c', 24, -14, 22, -11, 22, -6,
+    'c', 22, -2, 24, 0, 28, 0,
+    'c', 33, 0, 36, -2, 36, -8,
+    'c', 36, -12, 34, -14, 30, -14,
+    'l', 28, -14,
+    'e',
+    'X', 'X', 'X',
+/* 0x26 '&'  offset 323 */
+    0, 40, 42, 0, 4, 4,
+    0, 10, 22, 40, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 40, -24,
+    'c', 40, -27, 39, -28, 37, -28,
+    'c', 29, -28, 32, 0, 12, 0,
+    'c', 0, 0, 0, -8, 0, -10,
+    'c', 0, -24, 22, -20, 22, -34,
+    'c', 22, -45, 10, -45, 10, -34,
+    'c', 10, -27, 25, 0, 36, 0,
+    'c', 39, 0, 40, -1, 40, -4,
+    'e',
+/* 0x27 '''  offset 390 */
+    0, 4, 42, -30, 2, 2,
+    0, 4, /* snap_x */
+    -42, -28, /* snap_y */
+    'm', 2, -38,
+    'c', -1, -38, -1, -42, 2, -42,
+    'c', 6, -42, 5, -33, 0, -30,
+    'e',
+    'X',
+/* 0x28 '('  offset 419 */
+    0, 14, 50, 14, 2, 2,
+    0, 14, /* snap_x */
+    -50, 14, /* snap_y */
+    'm', 14, -50,
+    'c', -5, -32, -5, -5, 14, 14,
+    'e',
+    'X',
+/* 0x29 ')'  offset 441 */
+    0, 14, 50, 14, 2, 2,
+    0, 14, /* snap_x */
+    -15, 14, /* snap_y */
+    'm', 0, -50,
+    'c', 19, -34, 19, -2, 0, 14,
+    'e',
+    'X',
+/* 0x2a '*'  offset 463 */
+    0, 20, 30, -6, 3, 3,
+    0, 10, 20, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 10, -30,
+    'l', 10, -6,
+    'm', 0, -24,
+    'l', 20, -12,
+    'm', 20, -24,
+    'l', 0, -12,
+    'e',
+/* 0x2b '+'  offset 494 */
+    0, 36, 36, 0, 3, 4,
+    0, 18, 36, /* snap_x */
+    -21, -18, -15, 0, /* snap_y */
+    'm', 18, -36,
+    'l', 18, 0,
+    'm', 0, -18,
+    'l', 36, -18,
+    'e',
+/* 0x2c ','  offset 520 */
+    0, 4, 4, 8, 2, 3,
+    0, 4, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 4, -2,
+    'c', 4, 1, 0, 1, 0, -2,
+    'c', 0, -5, 4, -5, 4, -2,
+    'c', 4, 4, 2, 6, 0, 8,
+    'e',
+/* 0x2d '-'  offset 556 */
+    0, 36, 18, -18, 2, 4,
+    0, 36, /* snap_x */
+    -21, -18, -15, 0, /* snap_y */
+    'm', 0, -18,
+    'l', 36, -18,
+    'e',
+/* 0x2e '.'  offset 575 */
+    0, 4, 4, 0, 2, 3,
+    0, 4, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 2, -4,
+    'c', -1, -4, -1, 0, 2, 0,
+    'c', 5, 0, 5, -4, 2, -4,
+    'e',
+/* 0x2f '/'  offset 604 */
+    0, 36, 50, 14, 2, 3,
+    0, 36, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 36, -50,
+    'l', 0, 14,
+    'e',
+/* 0x30 '0'  offset 622 */
+    0, 28, 42, 0, 2, 4,
+    0, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 14, -42,
+    'c', 9, -42, 0, -42, 0, -21,
+    'c', 0, 0, 9, 0, 14, 0,
+    'c', 19, 0, 28, 0, 28, -21,
+    'c', 28, -42, 19, -42, 14, -42,
+    'E',
+/* 0x31 '1'  offset 666 */
+    0, 28, 42, 0, 2, 3,
+    0, 17, 28 /* snap_x */
+    -42, -34, 0, /* snap_y */
+    'm', 7, -34,
+    'c', 11, -35, 15, -38, 17, -42,
+    'l', 17, 0,
+    'e',
+/* 0x32 '2'  offset 691 */
+    0, 28, 42, 0, 4, 4,
+    0, 2, 26, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 2, -32,
+    'c', 2, -34, 2, -42, 14, -42,
+    'c', 26, -42, 26, -34, 26, -32,
+    'c', 26, -30, 25, -25, 10, -10,
+    'l', 0, 0,
+    'l', 28, 0,
+    'e',
+/* 0x33 '3'  offset 736 */
+    0, 28, 42, 0, 2, 5,
+    0, 28, /* snap_x */
+    -42, -26, -21, -15, 0, /* snap_y */
+    'm', 4, -42,
+    'l', 26, -42,
+    'l', 14, -26,
+    'c', 21, -26, 28, -26, 28, -14,
+    'c', 28, 0, 17, 0, 13, 0,
+    'c', 8, 0, 3, -1, 0, -8,
+    'e',
+/* 0x34 '4'  offset 780 */
+    0, 28, 42, 0, 3, 3,
+    0, 20, 30, /* snap_x */
+    -42, -14, 0, /* snap_y */
+    'm', 20, 0,
+    'l', 20, -42,
+    'l', 0, -14,
+    'l', 30, -14,
+    'e',
+    'X', 'X', 'X',
+    'X',
+/* 0x35 '5'  offset 809 */
+    0, 28, 42, 0, 2, 5,
+    0, 28, /* snap_x */
+    -42, -28, -21, -15, 0, /* snap_y */
+    'm', 24, -42,
+    'l', 4, -42,
+    'l', 2, -24,
+    'c', 5, -27, 10, -28, 13, -28,
+    'c', 16, -28, 28, -28, 28, -14,
+    'c', 28, 0, 16, 0, 13, 0,
+    'c', 10, 0, 3, 0, 0, -8,
+    'e',
+/* 0x36 '6'  offset 860 */
+    0, 28, 42, 0, 2, 5,
+    0, 26, /* snap_x */
+    -42, -26, -21, -15, 0, /* snap_y */
+    'm', 24, -36,
+    'c', 22, -41, 19, -42, 14, -42,
+    'c', 9, -42, 0, -41, 0, -19,
+    'c', 0, -1, 9, 0, 13, 0,
+    'c', 18, 0, 26, -3, 26, -13,
+    'c', 26, -18, 23, -26, 13, -26,
+    'c', 10, -26, 1, -24, 0, -14,
+    'e',
+/* 0x37 '7'  offset 919 */
+    0, 28, 42, 0, 2, 4,
+    0, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 28, -42,
+    'l', 8, 0,
+    'e',
+    'X', 'X', 'X',
+/* 0x38 '8'  offset 944 */
+    0, 28, 42, 0, 4, 4,
+    0, 2, 26, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 14, -42,
+    'c', 5, -42, 2, -40, 2, -34,
+    'c', 2, -18, 28, -32, 28, -11,
+    'c', 28, 0, 18, 0, 14, 0,
+    'c', 10, 0, 0, 0, 0, -11,
+    'c', 0, -32, 26, -18, 26, -34,
+    'c', 26, -40, 23, -42, 14, -42,
+    'E',
+/* 0x39 '9'  offset 1004 */
+    0, 28, 42, 0, 2, 5,
+    0, 26, /* snap_x */
+    -42, -21, -16, -15, 0, /* snap_y */
+    'm', 26, -28,
+    'c', 25, -16, 13, -16, 13, -16,
+    'c', 8, -16, 0, -19, 0, -29,
+    'c', 0, -34, 3, -42, 13, -42,
+    'c', 24, -42, 26, -32, 26, -23,
+    'c', 26, -14, 24, 0, 12, 0,
+    'c', 7, 0, 4, -2, 2, -6,
+    'e',
+/* 0x3a ':'  offset 1063 */
+    0, 4, 28, 0, 2, 3,
+    0, 4, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 2, -28,
+    'c', -1, -28, -1, -24, 2, -24,
+    'c', 5, -24, 5, -28, 2, -28,
+    'm', 2, -4,
+    'c', -1, -4, -1, 0, 2, 0,
+    'c', 5, 0, 5, -4, 2, -4,
+    'e',
+/* 0x3b ';'  offset 1109 */
+    0, 4, 28, 8, 2, 3,
+    0, 4, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 2, -28,
+    'c', -1, -28, -1, -24, 2, -24,
+    'c', 5, -24, 5, -28, 2, -28,
+    'm', 4, -2,
+    'c', 4, 1, 0, 1, 0, -2,
+    'c', 0, -5, 4, -5, 4, -2,
+    'c', 4, 3, 2, 6, 0, 8,
+    'e',
+/* 0x3c '<'  offset 1162 */
+    0, 32, 36, 0, 2, 3,
+    0, 32, /* snap_x */
+    -36, -18, 0, /* snap_y */
+    'm', 32, -36,
+    'l', 0, -18,
+    'l', 32, 0,
+    'e',
+/* 0x3d '='  offset 1183 */
+    0, 36, 24, -12, 2, 2,
+    0, 36, /* snap_x */
+    -24, -15, /* snap_y */
+    'm', 0, -24,
+    'l', 36, -24,
+    'm', 0, -12,
+    'l', 36, -12,
+    'e',
+    'X', 'X', 'X',
+/* 0x3e '>'  offset 1209 */
+    0, 32, 36, 0, 2, 3,
+    0, 32, /* snap_x */
+    -36, -18, 0, /* snap_y */
+    'm', 0, -36,
+    'l', 32, -18,
+    'l', 0, 0,
+    'e',
+/* 0x3f '?'  offset 1230 */
+    0, 24, 42, 0, 3, 4,
+    0, 12, 24, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 0, -32,
+    'c', 0, -34, 0, -42, 12, -42,
+    'c', 24, -42, 24, -34, 24, -32,
+    'c', 24, -29, 24, -24, 12, -20,
+    'l', 12, -14,
+    'm', 12, 0,
+    'l', 12, 0,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X',
+/* 0x40 '@'  offset 1288 */
+    0, 42, 42, 0, 1, 6,
+    30, /* snap_x */
+    -42, -32, -21, -15, -10, 0, /* snap_y */
+    'm', 30, -26,
+    'c', 28, -31, 24, -32, 21, -32,
+    'c', 10, -32, 10, -23, 10, -19,
+    'c', 10, -13, 11, -10, 19, -10,
+    'c', 30, -10, 28, -21, 30, -32,
+    'c', 27, -10, 30, -10, 34, -10,
+    'c', 41, -10, 42, -19, 42, -22,
+    'c', 42, -34, 34, -42, 21, -42,
+    'c', 9, -42, 0, -34, 0, -21,
+    'c', 0, -9, 8, 0, 21, 0,
+    'c', 30, 0, 34, -3, 36, -6,
+    'e',
+/* 0x41 'A'  offset 1375 */
+    0, 32, 42, 0, 2, 3,
+    0, 32, /* snap_x */
+    -42, -14, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 16, -42,
+    'l', 32, 0,
+    'm', 6, -14,
+    'l', 26, -14,
+    'e',
+    'X', 'X', 'X',
+    'X',
+/* 0x42 'B'  offset 1406 */
+    0, 28, 42, 0, 2, 3,
+    0, 28, /* snap_x */
+    -42, -22, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 18, -42,
+    'c', 32, -42, 32, -22, 18, -22,
+    'l', 0, -22,
+    'l', 18, -22,
+    'c', 32, -22, 32, 0, 18, 0,
+    'E',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X',
+/* 0x43 'C'  offset 1455 */
+    0, 30, 42, 0, 2, 4,
+    0, 30, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 30, -32,
+    'c', 26, -42, 21, -42, 16, -42,
+    'c', 2, -42, 0, -29, 0, -21,
+    'c', 0, -13, 2, 0, 16, 0,
+    'c', 21, 0, 26, 0, 30, -10,
+    'e',
+/* 0x44 'D'  offset 1499 */
+    0, 28, 42, 0, 2, 2,
+    0, 28, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 14, -42,
+    'c', 33, -42, 33, 0, 14, 0,
+    'E',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X',
+/* 0x45 'E'  offset 1534 */
+    0, 26, 42, 0, 2, 3,
+    0, 26, /* snap_x */
+    -42, -22, 0, /* snap_y */
+    'm', 26, -42,
+    'l', 0, -42,
+    'l', 0, 0,
+    'l', 26, 0,
+    'm', 0, -22,
+    'l', 16, -22,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X',
+/* 0x46 'F'  offset 1572 */
+    0, 26, 42, 0, 2, 3,
+    0, 26, /* snap_x */
+    -42, -22, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 26, -42,
+    'm', 0, -22,
+    'l', 16, -22,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X',
+/* 0x47 'G'  offset 1604 */
+    0, 30, 42, 0, 2, 5,
+    0, 30, /* snap_x */
+    -42, -21, -16, -15, 0, /* snap_y */
+    'm', 30, -32,
+    'c', 26, -42, 21, -42, 16, -42,
+    'c', 2, -42, 0, -29, 0, -21,
+    'c', 0, -13, 2, 0, 16, 0,
+    'c', 28, 0, 30, -7, 30, -16,
+    'l', 20, -16,
+    'e',
+    'X', 'X', 'X',
+/* 0x48 'H'  offset 1655 */
+    0, 28, 42, 0, 2, 3,
+    0, 28, /* snap_x */
+    -42, -22, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'm', 28, -42,
+    'l', 28, 0,
+    'm', 0, -22,
+    'l', 28, -22,
+    'e',
+    'X',
+/* 0x49 'I'  offset 1686 */
+    0, 0, 42, 0, 1, 2,
+    0, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'e',
+    'X',
+/* 0x4a 'J'  offset 1703 */
+    0, 20, 42, 0, 2, 3,
+    0, 20, /* snap_x */
+    -42, -15, 0, /* snap_y */
+    'm', 20, -42,
+    'l', 20, -10,
+    'c', 20, 3, 0, 3, 0, -10,
+    'l', 0, -14,
+    'e',
+/* 0x4b 'K'  offset 1731 */
+    0, 28, 42, 0, 2, 3,
+    0, 28, /* snap_x */
+    -42, -15, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'm', 28, -42,
+    'l', 0, -14,
+    'm', 10, -24,
+    'l', 28, 0,
+    'e',
+/* 0x4c 'L'  offset 1761 */
+    0, 24, 42, 0, 2, 2,
+    0, 24, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'l', 24, 0,
+    'e',
+    'X', 'X', 'X',
+    'X',
+/* 0x4d 'M'  offset 1785 */
+    0, 32, 42, 0, 2, 2,
+    0, 32, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 16, 0,
+    'l', 32, -42,
+    'l', 32, 0,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X',
+/* 0x4e 'N'  offset 1821 */
+    0, 28, 42, 0, 2, 2,
+    0, 28, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 28, 0,
+    'l', 28, -42,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X',
+/* 0x4f 'O'  offset 1851 */
+    0, 32, 42, 0, 2, 4,
+    0, 32, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 16, -42,
+    'c', 2, -42, 0, -29, 0, -21,
+    'c', 0, -13, 2, 0, 16, 0,
+    'c', 30, 0, 32, -13, 32, -21,
+    'c', 32, -29, 30, -42, 16, -42,
+    'E',
+/* 0x50 'P'  offset 1895 */
+    0, 28, 42, 0, 2, 5,
+    0, 28, /* snap_x */
+    -42, -21, -20, -15, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 18, -42,
+    'c', 32, -42, 32, -20, 18, -20,
+    'l', 0, -20,
+    'e',
+    'X', 'X', 'X',
+/* 0x51 'Q'  offset 1931 */
+    0, 32, 42, 4, 2, 4,
+    0, 32, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 16, -42,
+    'c', 2, -42, 0, -29, 0, -21,
+    'c', 0, -13, 2, 0, 16, 0,
+    'c', 30, 0, 32, -13, 32, -21,
+    'c', 32, -29, 30, -42, 16, -42,
+    'M', 18, -8,
+    'l', 30, 4,
+    'e',
+/* 0x52 'R'  offset 1981 */
+    0, 28, 42, 0, 2, 5,
+    0, 28, /* snap_x */
+    -42, -22, -21, -15, 0, /* snap_y */
+    'm', 0, 0,
+    'l', 0, -42,
+    'l', 18, -42,
+    'c', 32, -42, 31, -22, 18, -22,
+    'l', 0, -22,
+    'm', 14, -22,
+    'l', 28, 0,
+    'e',
+    'X', 'X', 'X',
+/* 0x53 'S'  offset 2023 */
+    0, 28, 42, 0, 2, 4,
+    0, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 28, -36,
+    'c', 25, -41, 21, -42, 14, -42,
+    'c', 10, -42, 0, -42, 0, -34,
+    'c', 0, -17, 28, -28, 28, -9,
+    'c', 28, 0, 19, 0, 14, 0,
+    'c', 7, 0, 3, -1, 0, -6,
+    'e',
+/* 0x54 'T'  offset 2074 */
+    0, 28, 42, 0, 3, 4,
+    0, 14, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 14, -42,
+    'l', 14, 0,
+    'm', 0, -42,
+    'l', 28, -42,
+    'e',
+/* 0x55 'U'  offset 2100 */
+    0, 28, 42, 0, 2, 2,
+    0, 28, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, -12,
+    'c', 0, 4, 28, 4, 28, -12,
+    'l', 28, -42,
+    'e',
+    'X',
+/* 0x56 'V'  offset 2128 */
+    0, 32, 42, 0, 2, 2,
+    0, 32, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 16, 0,
+    'l', 32, -42,
+    'e',
+    'X', 'X', 'X',
+    'X',
+/* 0x57 'W'  offset 2152 */
+    0, 40, 42, 0, 2, 2,
+    0, 40, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 10, 0,
+    'l', 20, -42,
+    'l', 30, 0,
+    'l', 40, -42,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X',
+/* 0x58 'X'  offset 2188 */
+    0, 28, 42, 0, 2, 2,
+    0, 28, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 28, 0,
+    'm', 28, -42,
+    'l', 0, 0,
+    'e',
+    'X',
+/* 0x59 'Y'  offset 2212 */
+    0, 32, 42, 0, 3, 3,
+    0, 16, 32, /* snap_x */
+    -42, -21, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 16, -22,
+    'l', 16, 0,
+    'm', 32, -42,
+    'l', 16, -22,
+    'e',
+/* 0x5a 'Z'  offset 2240 */
+    0, 28, 42, 0, 2, 4,
+    0, 28, /* snap_x */
+    -42, -21, -15, 0, /* snap_y */
+    'm', 28, 0,
+    'l', 0, 0,
+    'l', 28, -42,
+    'l', 0, -42,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+/* 0x5b '['  offset 2271 */
+    0, 14, 44, 0, 2, 4,
+    0, 14, /* snap_x */
+    -44, -21, -15, 0, /* snap_y */
+    'm', 14, -44,
+    'l', 0, -44,
+    'l', 0, 0,
+    'l', 14, 0,
+    'e',
+/* 0x5c '\'  offset 2296 */
+    0, 36, 50, 14, 2, 3,
+    0, 36, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 0, -50,
+    'l', 36, 14,
+    'e',
+/* 0x5d ']'  offset 2314 */
+    0, 14, 44, 0, 2, 4,
+    0, 14, /* snap_x */
+    -44, -21, -15, 0, /* snap_y */
+    'm', 0, -44,
+    'l', 14, -44,
+    'l', 14, 0,
+    'l', 0, 0,
+    'e',
+/* 0x5e '^'  offset 2339 */
+    0, 32, 46, -18, 2, 3,
+    0, 32, /* snap_x */
+    -21, -15, 0, /* snap_y */
+    'm', 0, -18,
+    'l', 16, -46,
+    'l', 32, -18,
+    'e',
+    'X', 'X', 'X',
+/* 0x5f '_'  offset 2363 */
+    0, 36, 0, 0, 2, 1,
+    0, 36, /* snap_x */
+    0, /* snap_y */
+    'm', 0, 0,
+    'l', 36, 0,
+    'e',
+    'X', 'X',
+/* 0x60 '`'  offset 2381 */
+    0, 4, 42, -30, 2, 2,
+    0, 4, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 4, -42,
+    'c', 2, -40, 0, -39, 0, -32,
+    'c', 0, -31, 1, -30, 2, -30,
+    'c', 5, -30, 5, -34, 2, -34,
+    'e',
+    'X',
+/* 0x61 'a'  offset 2417 */
+    0, 24, 28, 0, 2, 4,
+    0, 24, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 24, -28,
+    'l', 24, 0,
+    'm', 24, -22,
+    'c', 21, -27, 18, -28, 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 18, 0, 21, -1, 24, -6,
+    'e',
+/* 0x62 'b'  offset 2467 */
+    0, 24, 42, 0, 2, 4,
+    0, 24, /* snap_x */
+    -42, -28, -15, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'm', 0, -22,
+    'c', 3, -26, 6, -28, 11, -28,
+    'c', 22, -28, 24, -19, 24, -14,
+    'c', 24, -9, 22, 0, 11, 0,
+    'c', 6, 0, 3, -2, 0, -6,
+    'e',
+/* 0x63 'c'  offset 2517 */
+    0, 24, 28, 0, 2, 4,
+    0, 24, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 24, -22,
+    'c', 21, -26, 18, -28, 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 18, 0, 21, -2, 24, -6,
+    'e',
+/* 0x64 'd'  offset 2561 */
+    0, 24, 42, 0, 2, 4,
+    0, 24, /* snap_x */
+    -42, -28, -15, 0, /* snap_y */
+    'm', 24, -42,
+    'l', 24, 0,
+    'm', 24, -22,
+    'c', 21, -26, 18, -28, 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 18, 0, 21, -2, 24, -6,
+    'e',
+/* 0x65 'e'  offset 2611 */
+    0, 24, 28, 0, 2, 5,
+    0, 24, /* snap_x */
+    -28, -21, -16, -15, 0, /* snap_y */
+    'm', 0, -16,
+    'l', 24, -16,
+    'c', 24, -20, 24, -28, 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 18, 0, 21, -2, 24, -6,
+    'e',
+/* 0x66 'f'  offset 2659 */
+    0, 16, 42, 0, 3, 5,
+    0, 6, 16, /* snap_x */
+    -42, -28, -21, -15, 0, /* snap_y */
+    'm', 16, -42,
+    'c', 8, -42, 6, -40, 6, -34,
+    'l', 6, 0,
+    'm', 0, -28,
+    'l', 14, -28,
+    'e',
+/* 0x67 'g'  offset 2693 */
+    0, 24, 28, 14, 2, 5,
+    0, 24, /* snap_x */
+    -28, -21, -15, 0, 14, /* snap_y */
+    'm', 24, -28,
+    'l', 24, 4,
+    'c', 23, 14, 16, 14, 13, 14,
+    'c', 10, 14, 8, 14, 6, 12,
+    'm', 24, -22,
+    'c', 21, -26, 18, -28, 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 18, 0, 21, -2, 24, -6,
+    'e',
+/* 0x68 'h'  offset 2758 */
+    0, 22, 42, 0, 2, 4,
+    0, 22, /* snap_x */
+    -42, -28, -15, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'm', 0, -20,
+    'c', 8, -32, 22, -31, 22, -20,
+    'l', 22, 0,
+    'e',
+/* 0x69 'i'  offset 2790 */
+    0, 0, 44, 0, 1, 3,
+    0, /* snap_x */
+    -42, -28, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, -42,
+    'm', 0, -28,
+    'l', 0, 0,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X',
+    'X', 'X',
+/* 0x6a 'j'  offset 2826 */
+    -8, 4, 44, 14, 3, 5,
+    -8, 2, 4, /* snap_x */
+    -42, -21, -15, 0, 14, /* snap_y */
+    'm', 2, -42,
+    'l', 2, -42,
+    'm', 2, -28,
+    'l', 2, 6,
+    'c', 2, 13, -1, 14, -8, 14,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X',
+/* 0x6b 'k'  offset 2870 */
+    0, 22, 42, 0, 2, 3,
+    0, 22, /* snap_x */
+    -42, -28, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'm', 20, -28,
+    'l', 0, -8,
+    'm', 8, -16,
+    'l', 22, 0,
+    'e',
+/* 0x6c 'l'  offset 2900 */
+    0, 0, 42, 0, 1, 2,
+    0, /* snap_x */
+    -42, 0, /* snap_y */
+    'm', 0, -42,
+    'l', 0, 0,
+    'e',
+    'X',
+/* 0x6d 'm'  offset 2917 */
+    0, 44, 28, 0, 3, 3,
+    0, 22, 44, /* snap_x */
+    -28, -21, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 0, 0,
+    'm', 0, -20,
+    'c', 5, -29, 22, -33, 22, -20,
+    'l', 22, 0,
+    'm', 22, -20,
+    'c', 27, -29, 44, -33, 44, -20,
+    'l', 44, 0,
+    'e',
+    'X',
+/* 0x6e 'n'  offset 2963 */
+    0, 22, 28, 0, 2, 3,
+    0, 22, /* snap_x */
+    -28, -21, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 0, 0,
+    'm', 0, -20,
+    'c', 4, -28, 22, -34, 22, -20,
+    'l', 22, 0,
+    'e',
+    'X',
+/* 0x6f 'o'  offset 2995 */
+    0, 26, 28, 0, 2, 4,
+    0, 26, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 24, 0, 26, -9, 26, -14,
+    'c', 26, -19, 24, -28, 13, -28,
+    'E',
+/* 0x70 'p'  offset 3039 */
+    0, 24, 28, 14, 2, 4,
+    0, 24, /* snap_x */
+    -28, -21, 0, 14, /* snap_y */
+    'm', 0, -28,
+    'l', 0, 14,
+    'm', 0, -22,
+    'c', 3, -26, 6, -28, 11, -28,
+    'c', 22, -28, 24, -19, 24, -14,
+    'c', 24, -9, 22, 0, 11, 0,
+    'c', 6, 0, 3, -2, 0, -6,
+    'e',
+/* 0x71 'q'  offset 3089 */
+    0, 24, 28, 14, 2, 4,
+    0, 24, /* snap_x */
+    -28, -21, 0, 14, /* snap_y */
+    'm', 24, -28,
+    'l', 24, 14,
+    'm', 24, -22,
+    'c', 21, -26, 18, -28, 13, -28,
+    'c', 2, -28, 0, -19, 0, -14,
+    'c', 0, -9, 2, 0, 13, 0,
+    'c', 18, 0, 21, -2, 24, -6,
+    'e',
+/* 0x72 'r'  offset 3139 */
+    0, 16, 28, 0, 2, 4,
+    0, 16, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 0, 0,
+    'm', 0, -16,
+    'c', 2, -27, 7, -28, 16, -28,
+    'e',
+/* 0x73 's'  offset 3168 */
+    0, 22, 28, 0, 2, 4,
+    0, 22, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 22, -22,
+    'c', 22, -27, 16, -28, 11, -28,
+    'c', 4, -28, 0, -26, 0, -22,
+    'c', 0, -11, 22, -20, 22, -7,
+    'c', 22, 0, 17, 0, 11, 0,
+    'c', 6, 0, 0, -1, 0, -6,
+    'e',
+/* 0x74 't'  offset 3219 */
+    0, 16, 42, 0, 3, 4,
+    0, 6, 16, /* snap_x */
+    -42, -28, -21, 0, /* snap_y */
+    'm', 6, -42,
+    'l', 6, -8,
+    'c', 6, -2, 8, 0, 16, 0,
+    'm', 0, -28,
+    'l', 14, -28,
+    'e',
+/* 0x75 'u'  offset 3252 */
+    0, 22, 28, 0, 2, 3,
+    0, 22, /* snap_x */
+    -28, -15, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 0, -8,
+    'c', 0, 6, 18, 0, 22, -8,
+    'm', 22, -28,
+    'l', 22, 0,
+    'e',
+/* 0x76 'v'  offset 3283 */
+    0, 24, 28, 0, 2, 3,
+    0, 24, /* snap_x */
+    -28, -15, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 12, 0,
+    'l', 24, -28,
+    'e',
+    'X', 'X', 'X',
+/* 0x77 'w'  offset 3307 */
+    0, 32, 28, 0, 2, 3,
+    0, 32, /* snap_x */
+    -28, -15, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 8, 0,
+    'l', 16, -28,
+    'l', 24, 0,
+    'l', 32, -28,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+/* 0x78 'x'  offset 3343 */
+    0, 22, 28, 0, 2, 2,
+    0, 22, /* snap_x */
+    -28, 0, /* snap_y */
+    'm', 0, -28,
+    'l', 22, 0,
+    'm', 22, -28,
+    'l', 0, 0,
+    'e',
+    'X',
+/* 0x79 'y'  offset 3367 */
+    -2, 24, 28, 14, 2, 4,
+    0, 24, /* snap_x */
+    -28, -15, 0, 14, /* snap_y */
+    'm', 0, -28,
+    'l', 12, 0,
+    'm', 24, -28,
+    'l', 12, 0,
+    'c', 6, 13, 0, 14, -2, 14,
+    'e',
+/* 0x7a 'z'  offset 3399 */
+    0, 22, 28, 0, 2, 4,
+    0, 22, /* snap_x */
+    -28, -21, -15, 0, /* snap_y */
+    'm', 22, 0,
+    'l', 0, 0,
+    'l', 22, -28,
+    'l', 0, -28,
+    'e',
+    'X', 'X', 'X',
+    'X', 'X', 'X',
+/* 0x7b '{'  offset 3430 */
+    0, 16, 44, 0, 3, 5,
+    0, 6, 16, /* snap_x */
+    -44, -24, -21, -15, 0, /* snap_y */
+    'm', 16, -44,
+    'c', 10, -44, 6, -42, 6, -36,
+    'l', 6, -24,
+    'l', 0, -24,
+    'l', 6, -24,
+    'l', 6, -8,
+    'c', 6, -2, 10, 0, 16, 0,
+    'e',
+/* 0x7c '|'  offset 3474 */
+    0, 0, 50, 14, 1, 2,
+    0, /* snap_x */
+    -50, 14, /* snap_y */
+    'm', 0, -50,
+    'l', 0, 14,
+    'e',
+    'X',
+/* 0x7d '}'  offset 3491 */
+    0, 16, 44, 0, 3, 5,
+    0, 10, 16, /* snap_x */
+    -44, -24, -21, -15, 0, /* snap_y */
+    'm', 0, -44,
+    'c', 6, -44, 10, -42, 10, -36,
+    'l', 10, -24,
+    'l', 16, -24,
+    'l', 10, -24,
+    'l', 10, -8,
+    'c', 10, -2, 6, 0, 0, 0,
+    'e',
+/* 0x7e '~'  offset 3535 */
+    0, 36, 24, -12, 2, 5,
+    0, 36, /* snap_x */
+    -24, -21, -15, -12, 0, /* snap_y */
+    'm', 0, -14,
+    'c', 1, -21, 4, -24, 8, -24,
+    'c', 18, -24, 18, -12, 28, -12,
+    'c', 32, -12, 35, -15, 36, -22,
+    'e',
+};
+
+const uint16_t _cairo_twin_charmap[128] = {
+    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,
+    28,   40,   90,  114,  152,  224,  323,  390,
+    419,  441,  463,  494,  520,  556,  575,  604,
+    622,  666,  691,  736,  780,  809,  860,  919,
+    944, 1004, 1063, 1109, 1162, 1183, 1209, 1230,
+    1288, 1375, 1406, 1455, 1499, 1534, 1572, 1604,
+    1655, 1686, 1703, 1731, 1761, 1785, 1821, 1851,
+    1895, 1931, 1981, 2023, 2074, 2100, 2128, 2152,
+    2188, 2212, 2240, 2271, 2296, 2314, 2339, 2363,
+    2381, 2417, 2467, 2517, 2561, 2611, 2659, 2693,
+    2758, 2790, 2826, 2870, 2900, 2917, 2963, 2995,
+    3039, 3089, 3139, 3168, 3219, 3252, 3283, 3307,
+    3343, 3367, 3399, 3430, 3474, 3491, 3535,    0,
+};
+
diff --git a/libs/cairo-1.16.0/src/cairo-font-face-twin.c b/libs/cairo-1.16.0/src/cairo-font-face-twin.c
new file mode 100644
index 0000000..a0855c9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-font-face-twin.c
@@ -0,0 +1,752 @@
+/*
+ * Copyright © 2004 Keith Packard
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *      Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+#include <math.h>
+
+/*
+ * This file implements a user-font rendering the descendant of the Hershey
+ * font coded by Keith Packard for use in the Twin window system.
+ * The actual font data is in cairo-font-face-twin-data.c
+ *
+ * Ported to cairo user font and extended by Behdad Esfahbod.
+ */
+
+
+
+static cairo_user_data_key_t twin_properties_key;
+
+
+/*
+ * Face properties
+ */
+
+/* We synthesize multiple faces from the twin data.  Here is the parameters. */
+
+/* The following tables and matching code are copied from Pango */
+
+/* CSS weight */
+typedef enum {
+  TWIN_WEIGHT_THIN = 100,
+  TWIN_WEIGHT_ULTRALIGHT = 200,
+  TWIN_WEIGHT_LIGHT = 300,
+  TWIN_WEIGHT_BOOK = 380,
+  TWIN_WEIGHT_NORMAL = 400,
+  TWIN_WEIGHT_MEDIUM = 500,
+  TWIN_WEIGHT_SEMIBOLD = 600,
+  TWIN_WEIGHT_BOLD = 700,
+  TWIN_WEIGHT_ULTRABOLD = 800,
+  TWIN_WEIGHT_HEAVY = 900,
+  TWIN_WEIGHT_ULTRAHEAVY = 1000
+} twin_face_weight_t;
+
+/* CSS stretch */
+typedef enum {
+  TWIN_STRETCH_ULTRA_CONDENSED,
+  TWIN_STRETCH_EXTRA_CONDENSED,
+  TWIN_STRETCH_CONDENSED,
+  TWIN_STRETCH_SEMI_CONDENSED,
+  TWIN_STRETCH_NORMAL,
+  TWIN_STRETCH_SEMI_EXPANDED,
+  TWIN_STRETCH_EXPANDED,
+  TWIN_STRETCH_EXTRA_EXPANDED,
+  TWIN_STRETCH_ULTRA_EXPANDED
+} twin_face_stretch_t;
+
+typedef struct
+{
+  int value;
+  const char str[16];
+} FieldMap;
+
+static const FieldMap slant_map[] = {
+  { CAIRO_FONT_SLANT_NORMAL, "" },
+  { CAIRO_FONT_SLANT_NORMAL, "Roman" },
+  { CAIRO_FONT_SLANT_OBLIQUE, "Oblique" },
+  { CAIRO_FONT_SLANT_ITALIC, "Italic" }
+};
+
+static const FieldMap smallcaps_map[] = {
+  { FALSE, "" },
+  { TRUE, "Small-Caps" }
+};
+
+static const FieldMap weight_map[] = {
+  { TWIN_WEIGHT_THIN, "Thin" },
+  { TWIN_WEIGHT_ULTRALIGHT, "Ultra-Light" },
+  { TWIN_WEIGHT_ULTRALIGHT, "Extra-Light" },
+  { TWIN_WEIGHT_LIGHT, "Light" },
+  { TWIN_WEIGHT_BOOK, "Book" },
+  { TWIN_WEIGHT_NORMAL, "" },
+  { TWIN_WEIGHT_NORMAL, "Regular" },
+  { TWIN_WEIGHT_MEDIUM, "Medium" },
+  { TWIN_WEIGHT_SEMIBOLD, "Semi-Bold" },
+  { TWIN_WEIGHT_SEMIBOLD, "Demi-Bold" },
+  { TWIN_WEIGHT_BOLD, "Bold" },
+  { TWIN_WEIGHT_ULTRABOLD, "Ultra-Bold" },
+  { TWIN_WEIGHT_ULTRABOLD, "Extra-Bold" },
+  { TWIN_WEIGHT_HEAVY, "Heavy" },
+  { TWIN_WEIGHT_HEAVY, "Black" },
+  { TWIN_WEIGHT_ULTRAHEAVY, "Ultra-Heavy" },
+  { TWIN_WEIGHT_ULTRAHEAVY, "Extra-Heavy" },
+  { TWIN_WEIGHT_ULTRAHEAVY, "Ultra-Black" },
+  { TWIN_WEIGHT_ULTRAHEAVY, "Extra-Black" }
+};
+
+static const FieldMap stretch_map[] = {
+  { TWIN_STRETCH_ULTRA_CONDENSED, "Ultra-Condensed" },
+  { TWIN_STRETCH_EXTRA_CONDENSED, "Extra-Condensed" },
+  { TWIN_STRETCH_CONDENSED,       "Condensed" },
+  { TWIN_STRETCH_SEMI_CONDENSED,  "Semi-Condensed" },
+  { TWIN_STRETCH_NORMAL,          "" },
+  { TWIN_STRETCH_SEMI_EXPANDED,   "Semi-Expanded" },
+  { TWIN_STRETCH_EXPANDED,        "Expanded" },
+  { TWIN_STRETCH_EXTRA_EXPANDED,  "Extra-Expanded" },
+  { TWIN_STRETCH_ULTRA_EXPANDED,  "Ultra-Expanded" }
+};
+
+static const FieldMap monospace_map[] = {
+  { FALSE, "" },
+  { TRUE, "Mono" },
+  { TRUE, "Monospace" }
+};
+
+
+typedef struct _twin_face_properties {
+    cairo_font_slant_t  slant;
+    twin_face_weight_t  weight;
+    twin_face_stretch_t stretch;
+
+    /* lets have some fun */
+    cairo_bool_t monospace;
+    cairo_bool_t smallcaps;
+} twin_face_properties_t;
+
+static cairo_bool_t
+field_matches (const char *s1,
+               const char *s2,
+               int len)
+{
+  int c1, c2;
+
+  while (len && *s1 && *s2)
+    {
+#define TOLOWER(c) \
+   (((c) >= 'A' && (c) <= 'Z') ? (c) - 'A' + 'a' : (c))
+
+      c1 = TOLOWER (*s1);
+      c2 = TOLOWER (*s2);
+      if (c1 != c2) {
+        if (c1 == '-') {
+          s1++;
+          continue;
+        }
+        return FALSE;
+      }
+      s1++; s2++;
+      len--;
+    }
+
+  return len == 0 && *s1 == '\0';
+}
+
+static cairo_bool_t
+parse_int (const char *word,
+	   size_t      wordlen,
+	   int        *out)
+{
+  char *end;
+  long val = strtol (word, &end, 10);
+  int i = val;
+
+  if (end != word && (end == word + wordlen) && val >= 0 && val == i)
+    {
+      if (out)
+        *out = i;
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static cairo_bool_t
+find_field (const char *what,
+	    const FieldMap *map,
+	    int n_elements,
+	    const char *str,
+	    int len,
+	    int *val)
+{
+  int i;
+  cairo_bool_t had_prefix = FALSE;
+
+  if (what)
+    {
+      i = strlen (what);
+      if (len > i && 0 == strncmp (what, str, i) && str[i] == '=')
+	{
+	  str += i + 1;
+	  len -= i + 1;
+	  had_prefix = TRUE;
+	}
+    }
+
+  for (i=0; i<n_elements; i++)
+    {
+      if (map[i].str[0] && field_matches (map[i].str, str, len))
+	{
+	  if (val)
+	    *val = map[i].value;
+	  return TRUE;
+	}
+    }
+
+  if (!what || had_prefix)
+    return parse_int (str, len, val);
+
+  return FALSE;
+}
+
+static void
+parse_field (twin_face_properties_t *props,
+	     const char *str,
+	     int len)
+{
+  if (field_matches ("Normal", str, len))
+    return;
+
+#define FIELD(NAME) \
+  if (find_field (STRINGIFY (NAME), NAME##_map, ARRAY_LENGTH (NAME##_map), str, len, \
+		  (int *)(void *)&props->NAME)) \
+      return; \
+
+  FIELD (weight);
+  FIELD (slant);
+  FIELD (stretch);
+  FIELD (smallcaps);
+  FIELD (monospace);
+
+#undef FIELD
+}
+
+static void
+face_props_parse (twin_face_properties_t *props,
+	     const char *s)
+{
+    const char *start, *end;
+
+    for (start = end = s; *end; end++) {
+	if (*end != ' ' && *end != ':')
+	    continue;
+
+	if (start < end)
+		parse_field (props, start, end - start);
+	start = end + 1;
+    }
+    if (start < end)
+	    parse_field (props, start, end - start);
+}
+
+static twin_face_properties_t *
+twin_font_face_create_properties (cairo_font_face_t *twin_face)
+{
+    twin_face_properties_t *props;
+
+    props = _cairo_malloc (sizeof (twin_face_properties_t));
+    if (unlikely (props == NULL))
+	return NULL;
+
+    props->stretch  = TWIN_STRETCH_NORMAL;
+    props->slant = CAIRO_FONT_SLANT_NORMAL;
+    props->weight = TWIN_WEIGHT_NORMAL;
+    props->monospace = FALSE;
+    props->smallcaps = FALSE;
+
+    if (unlikely (cairo_font_face_set_user_data (twin_face,
+					    &twin_properties_key,
+					    props, free))) {
+	free (props);
+	return NULL;
+    }
+
+    return props;
+}
+
+static cairo_status_t
+twin_font_face_set_properties_from_toy (cairo_font_face_t *twin_face,
+					cairo_toy_font_face_t *toy_face)
+{
+    twin_face_properties_t *props;
+
+    props = twin_font_face_create_properties (twin_face);
+    if (unlikely (props == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    props->slant = toy_face->slant;
+    props->weight = toy_face->weight == CAIRO_FONT_WEIGHT_NORMAL ?
+		    TWIN_WEIGHT_NORMAL : TWIN_WEIGHT_BOLD;
+    face_props_parse (props, toy_face->family);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+/*
+ * Scaled properties
+ */
+
+typedef struct _twin_scaled_properties {
+	twin_face_properties_t *face_props;
+
+	cairo_bool_t snap; /* hint outlines */
+
+	double weight; /* unhinted pen width */
+	double penx, peny; /* hinted pen width */
+	double marginl, marginr; /* hinted side margins */
+
+	double stretch; /* stretch factor */
+} twin_scaled_properties_t;
+
+static void
+compute_hinting_scale (cairo_t *cr,
+		       double x, double y,
+		       double *scale, double *inv)
+{
+    cairo_user_to_device_distance (cr, &x, &y);
+    *scale = x == 0 ? y : y == 0 ? x :sqrt (x*x + y*y);
+    *inv = 1 / *scale;
+}
+
+static void
+compute_hinting_scales (cairo_t *cr,
+			double *x_scale, double *x_scale_inv,
+			double *y_scale, double *y_scale_inv)
+{
+    double x, y;
+
+    x = 1; y = 0;
+    compute_hinting_scale (cr, x, y, x_scale, x_scale_inv);
+
+    x = 0; y = 1;
+    compute_hinting_scale (cr, x, y, y_scale, y_scale_inv);
+}
+
+#define SNAPXI(p)	(_cairo_round ((p) * x_scale) * x_scale_inv)
+#define SNAPYI(p)	(_cairo_round ((p) * y_scale) * y_scale_inv)
+
+/* This controls the global font size */
+#define F(g)		((g) / 72.)
+
+static void
+twin_hint_pen_and_margins(cairo_t *cr,
+			  double *penx, double *peny,
+			  double *marginl, double *marginr)
+{
+    double x_scale, x_scale_inv;
+    double y_scale, y_scale_inv;
+    double margin;
+
+    compute_hinting_scales (cr,
+			    &x_scale, &x_scale_inv,
+			    &y_scale, &y_scale_inv);
+
+    *penx = SNAPXI (*penx);
+    if (*penx < x_scale_inv)
+	*penx = x_scale_inv;
+
+    *peny = SNAPYI (*peny);
+    if (*peny < y_scale_inv)
+	*peny = y_scale_inv;
+
+    margin = *marginl + *marginr;
+    *marginl = SNAPXI (*marginl);
+    if (*marginl < x_scale_inv)
+	*marginl = x_scale_inv;
+
+    *marginr = margin - *marginl;
+    if (*marginr < 0)
+	*marginr = 0;
+    *marginr = SNAPXI (*marginr);
+}
+
+static cairo_status_t
+twin_scaled_font_compute_properties (cairo_scaled_font_t *scaled_font,
+				     cairo_t           *cr)
+{
+    cairo_status_t status;
+    twin_scaled_properties_t *props;
+
+    props = _cairo_malloc (sizeof (twin_scaled_properties_t));
+    if (unlikely (props == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+
+    props->face_props = cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font),
+						       &twin_properties_key);
+
+    props->snap = scaled_font->options.hint_style > CAIRO_HINT_STYLE_NONE;
+
+    /* weight */
+    props->weight = props->face_props->weight * (F (4) / TWIN_WEIGHT_NORMAL);
+
+    /* pen & margins */
+    props->penx = props->peny = props->weight;
+    props->marginl = props->marginr = F (4);
+    if (scaled_font->options.hint_style > CAIRO_HINT_STYLE_SLIGHT)
+	twin_hint_pen_and_margins(cr,
+				  &props->penx, &props->peny,
+				  &props->marginl, &props->marginr);
+
+    /* stretch */
+    props->stretch = 1 + .1 * ((int) props->face_props->stretch - (int) TWIN_STRETCH_NORMAL);
+
+
+    /* Save it */
+    status = cairo_scaled_font_set_user_data (scaled_font,
+					      &twin_properties_key,
+					      props, free);
+    if (unlikely (status))
+	goto FREE_PROPS;
+
+    return CAIRO_STATUS_SUCCESS;
+
+FREE_PROPS:
+    free (props);
+    return status;
+}
+
+
+/*
+ * User-font implementation
+ */
+
+static cairo_status_t
+twin_scaled_font_init (cairo_scaled_font_t  *scaled_font,
+		       cairo_t              *cr,
+		       cairo_font_extents_t *metrics)
+{
+  metrics->ascent  = F (54);
+  metrics->descent = 1 - metrics->ascent;
+
+  return twin_scaled_font_compute_properties (scaled_font, cr);
+}
+
+#define TWIN_GLYPH_MAX_SNAP_X 4
+#define TWIN_GLYPH_MAX_SNAP_Y 7
+
+typedef struct {
+    int n_snap_x;
+    int8_t snap_x[TWIN_GLYPH_MAX_SNAP_X];
+    double snapped_x[TWIN_GLYPH_MAX_SNAP_X];
+    int n_snap_y;
+    int8_t snap_y[TWIN_GLYPH_MAX_SNAP_Y];
+    double snapped_y[TWIN_GLYPH_MAX_SNAP_Y];
+} twin_snap_info_t;
+
+#define twin_glyph_left(g)      ((g)[0])
+#define twin_glyph_right(g)     ((g)[1])
+#define twin_glyph_ascent(g)    ((g)[2])
+#define twin_glyph_descent(g)   ((g)[3])
+
+#define twin_glyph_n_snap_x(g)  ((g)[4])
+#define twin_glyph_n_snap_y(g)  ((g)[5])
+#define twin_glyph_snap_x(g)    (&g[6])
+#define twin_glyph_snap_y(g)    (twin_glyph_snap_x(g) + twin_glyph_n_snap_x(g))
+#define twin_glyph_draw(g)      (twin_glyph_snap_y(g) + twin_glyph_n_snap_y(g))
+
+static void
+twin_compute_snap (cairo_t             *cr,
+		   twin_snap_info_t    *info,
+		   const signed char   *b)
+{
+    int			s, n;
+    const signed char	*snap;
+    double x_scale, x_scale_inv;
+    double y_scale, y_scale_inv;
+
+    compute_hinting_scales (cr,
+			    &x_scale, &x_scale_inv,
+			    &y_scale, &y_scale_inv);
+
+    snap = twin_glyph_snap_x (b);
+    n = twin_glyph_n_snap_x (b);
+    info->n_snap_x = n;
+    assert (n <= TWIN_GLYPH_MAX_SNAP_X);
+    for (s = 0; s < n; s++) {
+	info->snap_x[s] = snap[s];
+	info->snapped_x[s] = SNAPXI (F (snap[s]));
+    }
+
+    snap = twin_glyph_snap_y (b);
+    n = twin_glyph_n_snap_y (b);
+    info->n_snap_y = n;
+    assert (n <= TWIN_GLYPH_MAX_SNAP_Y);
+    for (s = 0; s < n; s++) {
+	info->snap_y[s] = snap[s];
+	info->snapped_y[s] = SNAPYI (F (snap[s]));
+    }
+}
+
+static double
+twin_snap (int8_t v, int n, int8_t *snap, double *snapped)
+{
+    int	s;
+
+    if (!n)
+	return F(v);
+
+    if (snap[0] == v)
+	return snapped[0];
+
+    for (s = 0; s < n - 1; s++)
+    {
+	if (snap[s+1] == v)
+	    return snapped[s+1];
+
+	if (snap[s] <= v && v <= snap[s+1])
+	{
+	    int before = snap[s];
+	    int after = snap[s+1];
+	    int dist = after - before;
+	    double snap_before = snapped[s];
+	    double snap_after = snapped[s+1];
+	    double dist_before = v - before;
+	    return snap_before + (snap_after - snap_before) * dist_before / dist;
+	}
+    }
+    return F(v);
+}
+
+#define SNAPX(p)	twin_snap (p, info.n_snap_x, info.snap_x, info.snapped_x)
+#define SNAPY(p)	twin_snap (p, info.n_snap_y, info.snap_y, info.snapped_y)
+
+static cairo_status_t
+twin_scaled_font_render_glyph (cairo_scaled_font_t  *scaled_font,
+			       unsigned long         glyph,
+			       cairo_t              *cr,
+			       cairo_text_extents_t *metrics)
+{
+    double x1, y1, x2, y2, x3, y3;
+    double marginl;
+    twin_scaled_properties_t *props;
+    twin_snap_info_t info;
+    const int8_t *b;
+    const int8_t *g;
+    int8_t w;
+    double gw;
+
+    props = cairo_scaled_font_get_user_data (scaled_font, &twin_properties_key);
+
+    /* Save glyph space, we need it when stroking */
+    cairo_save (cr);
+
+    /* center the pen */
+    cairo_translate (cr, props->penx * .5, -props->peny * .5);
+
+    /* small-caps */
+    if (props->face_props->smallcaps && glyph >= 'a' && glyph <= 'z') {
+	glyph += 'A' - 'a';
+	/* 28 and 42 are small and capital letter heights of the glyph data */
+	cairo_scale (cr, 1, 28. / 42);
+    }
+
+    /* slant */
+    if (props->face_props->slant != CAIRO_FONT_SLANT_NORMAL) {
+	cairo_matrix_t shear = { 1, 0, -.2, 1, 0, 0};
+	cairo_transform (cr, &shear);
+    }
+
+    b = _cairo_twin_outlines +
+	_cairo_twin_charmap[unlikely (glyph >= ARRAY_LENGTH (_cairo_twin_charmap)) ? 0 : glyph];
+    g = twin_glyph_draw(b);
+    w = twin_glyph_right(b);
+    gw = F(w);
+
+    marginl = props->marginl;
+
+    /* monospace */
+    if (props->face_props->monospace) {
+	double monow = F(24);
+	double extra =  props->penx + props->marginl + props->marginr;
+	cairo_scale (cr, (monow + extra) / (gw + extra), 1);
+	gw = monow;
+
+	/* resnap margin for new transform */
+	{
+	    double x, y, x_scale, x_scale_inv;
+	    x = 1; y = 0;
+	    compute_hinting_scale (cr, x, y, &x_scale, &x_scale_inv);
+	    marginl = SNAPXI (marginl);
+	}
+    }
+
+    cairo_translate (cr, marginl, 0);
+
+    /* stretch */
+    cairo_scale (cr, props->stretch, 1);
+
+    if (props->snap)
+	twin_compute_snap (cr, &info, b);
+    else
+	info.n_snap_x = info.n_snap_y = 0;
+
+    /* advance width */
+    metrics->x_advance = gw * props->stretch + props->penx + props->marginl + props->marginr;
+
+    /* glyph shape */
+    for (;;) {
+	switch (*g++) {
+	case 'M':
+	    cairo_close_path (cr);
+	    /* fall through */
+	case 'm':
+	    x1 = SNAPX(*g++);
+	    y1 = SNAPY(*g++);
+	    cairo_move_to (cr, x1, y1);
+	    continue;
+	case 'L':
+	    cairo_close_path (cr);
+	    /* fall through */
+	case 'l':
+	    x1 = SNAPX(*g++);
+	    y1 = SNAPY(*g++);
+	    cairo_line_to (cr, x1, y1);
+	    continue;
+	case 'C':
+	    cairo_close_path (cr);
+	    /* fall through */
+	case 'c':
+	    x1 = SNAPX(*g++);
+	    y1 = SNAPY(*g++);
+	    x2 = SNAPX(*g++);
+	    y2 = SNAPY(*g++);
+	    x3 = SNAPX(*g++);
+	    y3 = SNAPY(*g++);
+	    cairo_curve_to (cr, x1, y1, x2, y2, x3, y3);
+	    continue;
+	case 'E':
+	    cairo_close_path (cr);
+	    /* fall through */
+	case 'e':
+	    cairo_restore (cr); /* restore glyph space */
+	    cairo_set_tolerance (cr, 0.01);
+	    cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+	    cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
+	    cairo_set_line_width (cr, 1);
+	    cairo_scale (cr, props->penx, props->peny);
+	    cairo_stroke (cr);
+	    break;
+	case 'X':
+	    /* filler */
+	    continue;
+	}
+	break;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+twin_scaled_font_unicode_to_glyph (cairo_scaled_font_t *scaled_font,
+				   unsigned long        unicode,
+				   unsigned long       *glyph)
+{
+    /* We use an identity charmap.  Which means we could live
+     * with no unicode_to_glyph method too.  But we define this
+     * to map all unknown chars to a single unknown glyph to
+     * reduce pressure on cache. */
+
+    if (likely (unicode < ARRAY_LENGTH (_cairo_twin_charmap)))
+	*glyph = unicode;
+    else
+	*glyph = 0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+/*
+ * Face constructor
+ */
+
+static cairo_font_face_t *
+_cairo_font_face_twin_create_internal (void)
+{
+    cairo_font_face_t *twin_font_face;
+
+    twin_font_face = cairo_user_font_face_create ();
+    cairo_user_font_face_set_init_func             (twin_font_face, twin_scaled_font_init);
+    cairo_user_font_face_set_render_glyph_func     (twin_font_face, twin_scaled_font_render_glyph);
+    cairo_user_font_face_set_unicode_to_glyph_func (twin_font_face, twin_scaled_font_unicode_to_glyph);
+
+    return twin_font_face;
+}
+
+cairo_font_face_t *
+_cairo_font_face_twin_create_fallback (void)
+{
+    cairo_font_face_t *twin_font_face;
+
+    twin_font_face = _cairo_font_face_twin_create_internal ();
+    if (! twin_font_face_create_properties (twin_font_face)) {
+	cairo_font_face_destroy (twin_font_face);
+	return (cairo_font_face_t *) &_cairo_font_face_nil;
+    }
+
+    return twin_font_face;
+}
+
+cairo_status_t
+_cairo_font_face_twin_create_for_toy (cairo_toy_font_face_t   *toy_face,
+				      cairo_font_face_t      **font_face)
+{
+    cairo_status_t status;
+    cairo_font_face_t *twin_font_face;
+
+    twin_font_face = _cairo_font_face_twin_create_internal ();
+    status = twin_font_face_set_properties_from_toy (twin_font_face, toy_face);
+    if (status) {
+	cairo_font_face_destroy (twin_font_face);
+	return status;
+    }
+
+    *font_face = twin_font_face;
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-font-face.c b/libs/cairo-1.16.0/src/cairo-font-face.c
new file mode 100644
index 0000000..e10a6ea
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-font-face.c
@@ -0,0 +1,345 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Graydon Hoare <graydon@redhat.com>
+ *      Owen Taylor <otaylor@redhat.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+/**
+ * SECTION:cairo-font-face
+ * @Title: cairo_font_face_t
+ * @Short_Description: Base class for font faces
+ * @See_Also: #cairo_scaled_font_t
+ *
+ * #cairo_font_face_t represents a particular font at a particular weight,
+ * slant, and other characteristic but no size, transformation, or size.
+ *
+ * Font faces are created using <firstterm>font-backend</firstterm>-specific
+ * constructors, typically of the form
+ * <function>cairo_<emphasis>backend</emphasis>_font_face_create(<!-- -->)</function>,
+ * or implicitly using the <firstterm>toy</firstterm> text API by way of
+ * cairo_select_font_face().  The resulting face can be accessed using
+ * cairo_get_font_face().
+ **/
+
+/* #cairo_font_face_t */
+
+const cairo_font_face_t _cairo_font_face_nil = {
+    { 0 },				/* hash_entry */
+    CAIRO_STATUS_NO_MEMORY,		/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },			/* user_data */
+    NULL
+};
+const cairo_font_face_t _cairo_font_face_nil_file_not_found = {
+    { 0 },				/* hash_entry */
+    CAIRO_STATUS_FILE_NOT_FOUND,	/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },			/* user_data */
+    NULL
+};
+
+cairo_status_t
+_cairo_font_face_set_error (cairo_font_face_t *font_face,
+	                    cairo_status_t     status)
+{
+    if (status == CAIRO_STATUS_SUCCESS)
+	return status;
+
+    /* Don't overwrite an existing error. This preserves the first
+     * error, which is the most significant. */
+    _cairo_status_set_error (&font_face->status, status);
+
+    return _cairo_error (status);
+}
+
+void
+_cairo_font_face_init (cairo_font_face_t               *font_face,
+		       const cairo_font_face_backend_t *backend)
+{
+    CAIRO_MUTEX_INITIALIZE ();
+
+    font_face->status = CAIRO_STATUS_SUCCESS;
+    CAIRO_REFERENCE_COUNT_INIT (&font_face->ref_count, 1);
+    font_face->backend = backend;
+
+    _cairo_user_data_array_init (&font_face->user_data);
+}
+
+/**
+ * cairo_font_face_reference:
+ * @font_face: a #cairo_font_face_t, (may be %NULL in which case this
+ * function does nothing).
+ *
+ * Increases the reference count on @font_face by one. This prevents
+ * @font_face from being destroyed until a matching call to
+ * cairo_font_face_destroy() is made.
+ *
+ * Use cairo_font_face_get_reference_count() to get the number of
+ * references to a #cairo_font_face_t.
+ *
+ * Return value: the referenced #cairo_font_face_t.
+ *
+ * Since: 1.0
+ **/
+cairo_font_face_t *
+cairo_font_face_reference (cairo_font_face_t *font_face)
+{
+    if (font_face == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
+	return font_face;
+
+    /* We would normally assert that we have a reference here but we
+     * can't get away with that due to the zombie case as documented
+     * in _cairo_ft_font_face_destroy. */
+
+    _cairo_reference_count_inc (&font_face->ref_count);
+
+    return font_face;
+}
+slim_hidden_def (cairo_font_face_reference);
+
+static inline cairo_bool_t
+__put(cairo_reference_count_t *v)
+{
+    int c, old;
+
+    c = CAIRO_REFERENCE_COUNT_GET_VALUE(v);
+    while (c != 1 && (old = _cairo_atomic_int_cmpxchg_return_old(&v->ref_count, c, c - 1)) != c)
+	c = old;
+
+    return c != 1;
+}
+
+cairo_bool_t
+_cairo_font_face_destroy (void *abstract_face)
+{
+#if 0 /* Nothing needs to be done, we can just drop the last reference */
+    cairo_font_face_t *font_face = abstract_face;
+    return _cairo_reference_count_dec_and_test (&font_face->ref_count);
+#endif
+    return TRUE;
+}
+
+/**
+ * cairo_font_face_destroy:
+ * @font_face: a #cairo_font_face_t
+ *
+ * Decreases the reference count on @font_face by one. If the result
+ * is zero, then @font_face and all associated resources are freed.
+ * See cairo_font_face_reference().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_face_destroy (cairo_font_face_t *font_face)
+{
+    if (font_face == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&font_face->ref_count));
+
+    /* We allow resurrection to deal with some memory management for the
+     * FreeType backend where cairo_ft_font_face_t and cairo_ft_unscaled_font_t
+     * need to effectively mutually reference each other
+     */
+    if (__put (&font_face->ref_count))
+	return;
+
+    if (! font_face->backend->destroy (font_face))
+	return;
+
+    _cairo_user_data_array_fini (&font_face->user_data);
+
+    free (font_face);
+}
+slim_hidden_def (cairo_font_face_destroy);
+
+/**
+ * cairo_font_face_get_type:
+ * @font_face: a font face
+ *
+ * This function returns the type of the backend used to create
+ * a font face. See #cairo_font_type_t for available types.
+ *
+ * Return value: The type of @font_face.
+ *
+ * Since: 1.2
+ **/
+cairo_font_type_t
+cairo_font_face_get_type (cairo_font_face_t *font_face)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
+	return CAIRO_FONT_TYPE_TOY;
+
+    return font_face->backend->type;
+}
+
+/**
+ * cairo_font_face_get_reference_count:
+ * @font_face: a #cairo_font_face_t
+ *
+ * Returns the current reference count of @font_face.
+ *
+ * Return value: the current reference count of @font_face.  If the
+ * object is a nil object, 0 will be returned.
+ *
+ * Since: 1.4
+ **/
+unsigned int
+cairo_font_face_get_reference_count (cairo_font_face_t *font_face)
+{
+    if (font_face == NULL ||
+	CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
+	return 0;
+
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&font_face->ref_count);
+}
+
+/**
+ * cairo_font_face_status:
+ * @font_face: a #cairo_font_face_t
+ *
+ * Checks whether an error has previously occurred for this
+ * font face
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or another error such as
+ *   %CAIRO_STATUS_NO_MEMORY.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_font_face_status (cairo_font_face_t *font_face)
+{
+    return font_face->status;
+}
+
+/**
+ * cairo_font_face_get_user_data:
+ * @font_face: a #cairo_font_face_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Return user data previously attached to @font_face using the specified
+ * key.  If no user data has been attached with the given key this
+ * function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ *
+ * Since: 1.0
+ **/
+void *
+cairo_font_face_get_user_data (cairo_font_face_t	   *font_face,
+			       const cairo_user_data_key_t *key)
+{
+    return _cairo_user_data_array_get_data (&font_face->user_data,
+					    key);
+}
+slim_hidden_def (cairo_font_face_get_user_data);
+
+/**
+ * cairo_font_face_set_user_data:
+ * @font_face: a #cairo_font_face_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach to the font face
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * font face is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attach user data to @font_face.  To remove user data from a font face,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_font_face_set_user_data (cairo_font_face_t	   *font_face,
+			       const cairo_user_data_key_t *key,
+			       void			   *user_data,
+			       cairo_destroy_func_t	    destroy)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
+	return font_face->status;
+
+    return _cairo_user_data_array_set_data (&font_face->user_data,
+					    key, user_data, destroy);
+}
+slim_hidden_def (cairo_font_face_set_user_data);
+
+void
+_cairo_unscaled_font_init (cairo_unscaled_font_t               *unscaled_font,
+			   const cairo_unscaled_font_backend_t *backend)
+{
+    CAIRO_REFERENCE_COUNT_INIT (&unscaled_font->ref_count, 1);
+    unscaled_font->backend = backend;
+}
+
+cairo_unscaled_font_t *
+_cairo_unscaled_font_reference (cairo_unscaled_font_t *unscaled_font)
+{
+    if (unscaled_font == NULL)
+	return NULL;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&unscaled_font->ref_count));
+
+    _cairo_reference_count_inc (&unscaled_font->ref_count);
+
+    return unscaled_font;
+}
+
+void
+_cairo_unscaled_font_destroy (cairo_unscaled_font_t *unscaled_font)
+{
+    if (unscaled_font == NULL)
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&unscaled_font->ref_count));
+
+    if (__put (&unscaled_font->ref_count))
+	return;
+
+    if (! unscaled_font->backend->destroy (unscaled_font))
+	return;
+
+    free (unscaled_font);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-font-options.c b/libs/cairo-1.16.0/src/cairo-font-options.c
new file mode 100644
index 0000000..9aef140
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-font-options.c
@@ -0,0 +1,622 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *      Owen Taylor <otaylor@redhat.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+/**
+ * SECTION:cairo-font-options
+ * @Title: cairo_font_options_t
+ * @Short_Description: How a font should be rendered
+ * @See_Also: #cairo_scaled_font_t
+ *
+ * The font options specify how fonts should be rendered.  Most of the 
+ * time the font options implied by a surface are just right and do not 
+ * need any changes, but for pixel-based targets tweaking font options 
+ * may result in superior output on a particular display.
+ **/
+
+static const cairo_font_options_t _cairo_font_options_nil = {
+    CAIRO_ANTIALIAS_DEFAULT,
+    CAIRO_SUBPIXEL_ORDER_DEFAULT,
+    CAIRO_LCD_FILTER_DEFAULT,
+    CAIRO_HINT_STYLE_DEFAULT,
+    CAIRO_HINT_METRICS_DEFAULT,
+    CAIRO_ROUND_GLYPH_POS_DEFAULT,
+    NULL
+};
+
+/**
+ * _cairo_font_options_init_default:
+ * @options: a #cairo_font_options_t
+ *
+ * Initializes all fields of the font options object to default values.
+ **/
+void
+_cairo_font_options_init_default (cairo_font_options_t *options)
+{
+    options->antialias = CAIRO_ANTIALIAS_DEFAULT;
+    options->subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+    options->lcd_filter = CAIRO_LCD_FILTER_DEFAULT;
+    options->hint_style = CAIRO_HINT_STYLE_DEFAULT;
+    options->hint_metrics = CAIRO_HINT_METRICS_DEFAULT;
+    options->round_glyph_positions = CAIRO_ROUND_GLYPH_POS_DEFAULT;
+    options->variations = NULL;
+}
+
+void
+_cairo_font_options_init_copy (cairo_font_options_t		*options,
+			       const cairo_font_options_t	*other)
+{
+    options->antialias = other->antialias;
+    options->subpixel_order = other->subpixel_order;
+    options->lcd_filter = other->lcd_filter;
+    options->hint_style = other->hint_style;
+    options->hint_metrics = other->hint_metrics;
+    options->round_glyph_positions = other->round_glyph_positions;
+    options->variations = other->variations ? strdup (other->variations) : NULL;
+}
+
+/**
+ * cairo_font_options_create:
+ *
+ * Allocates a new font options object with all options initialized
+ *  to default values.
+ *
+ * Return value: a newly allocated #cairo_font_options_t. Free with
+ *   cairo_font_options_destroy(). This function always returns a
+ *   valid pointer; if memory cannot be allocated, then a special
+ *   error object is returned where all operations on the object do nothing.
+ *   You can check for this with cairo_font_options_status().
+ *
+ * Since: 1.0
+ **/
+cairo_font_options_t *
+cairo_font_options_create (void)
+{
+    cairo_font_options_t *options;
+
+    options = _cairo_malloc (sizeof (cairo_font_options_t));
+    if (!options) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_options_t *) &_cairo_font_options_nil;
+    }
+
+    _cairo_font_options_init_default (options);
+
+    return options;
+}
+
+/**
+ * cairo_font_options_copy:
+ * @original: a #cairo_font_options_t
+ *
+ * Allocates a new font options object copying the option values from
+ *  @original.
+ *
+ * Return value: a newly allocated #cairo_font_options_t. Free with
+ *   cairo_font_options_destroy(). This function always returns a
+ *   valid pointer; if memory cannot be allocated, then a special
+ *   error object is returned where all operations on the object do nothing.
+ *   You can check for this with cairo_font_options_status().
+ *
+ * Since: 1.0
+ **/
+cairo_font_options_t *
+cairo_font_options_copy (const cairo_font_options_t *original)
+{
+    cairo_font_options_t *options;
+
+    if (cairo_font_options_status ((cairo_font_options_t *) original))
+	return (cairo_font_options_t *) &_cairo_font_options_nil;
+
+    options = _cairo_malloc (sizeof (cairo_font_options_t));
+    if (!options) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_options_t *) &_cairo_font_options_nil;
+    }
+
+    _cairo_font_options_init_copy (options, original);
+
+    return options;
+}
+
+void
+_cairo_font_options_fini (cairo_font_options_t *options)
+{
+    free (options->variations);
+}
+
+/**
+ * cairo_font_options_destroy:
+ * @options: a #cairo_font_options_t
+ *
+ * Destroys a #cairo_font_options_t object created with
+ * cairo_font_options_create() or cairo_font_options_copy().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_options_destroy (cairo_font_options_t *options)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    _cairo_font_options_fini (options);
+    free (options);
+}
+
+/**
+ * cairo_font_options_status:
+ * @options: a #cairo_font_options_t
+ *
+ * Checks whether an error has previously occurred for this
+ * font options object
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_font_options_status (cairo_font_options_t *options)
+{
+    if (options == NULL)
+	return CAIRO_STATUS_NULL_POINTER;
+    else if (options == (cairo_font_options_t *) &_cairo_font_options_nil)
+	return CAIRO_STATUS_NO_MEMORY;
+    else
+	return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_font_options_status);
+
+/**
+ * cairo_font_options_merge:
+ * @options: a #cairo_font_options_t
+ * @other: another #cairo_font_options_t
+ *
+ * Merges non-default options from @other into @options, replacing
+ * existing values. This operation can be thought of as somewhat
+ * similar to compositing @other onto @options with the operation
+ * of %CAIRO_OPERATOR_OVER.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_options_merge (cairo_font_options_t       *options,
+			  const cairo_font_options_t *other)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    if (cairo_font_options_status ((cairo_font_options_t *) other))
+	return;
+
+    if (other->antialias != CAIRO_ANTIALIAS_DEFAULT)
+	options->antialias = other->antialias;
+    if (other->subpixel_order != CAIRO_SUBPIXEL_ORDER_DEFAULT)
+	options->subpixel_order = other->subpixel_order;
+    if (other->lcd_filter != CAIRO_LCD_FILTER_DEFAULT)
+	options->lcd_filter = other->lcd_filter;
+    if (other->hint_style != CAIRO_HINT_STYLE_DEFAULT)
+	options->hint_style = other->hint_style;
+    if (other->hint_metrics != CAIRO_HINT_METRICS_DEFAULT)
+	options->hint_metrics = other->hint_metrics;
+    if (other->round_glyph_positions != CAIRO_ROUND_GLYPH_POS_DEFAULT)
+	options->round_glyph_positions = other->round_glyph_positions;
+
+    if (other->variations) {
+      if (options->variations) {
+        char *p;
+
+        /* 'merge' variations by concatenating - later entries win */
+        p = malloc (strlen (other->variations) + strlen (options->variations) + 2);
+        p[0] = 0;
+        strcat (p, options->variations);
+        strcat (p, ",");
+        strcat (p, other->variations);
+        free (options->variations);
+        options->variations = p;
+      }
+      else {
+        options->variations = strdup (other->variations);
+      }
+    }
+}
+slim_hidden_def (cairo_font_options_merge);
+
+/**
+ * cairo_font_options_equal:
+ * @options: a #cairo_font_options_t
+ * @other: another #cairo_font_options_t
+ *
+ * Compares two font options objects for equality.
+ *
+ * Return value: %TRUE if all fields of the two font options objects match.
+ *	Note that this function will return %FALSE if either object is in
+ *	error.
+ *
+ * Since: 1.0
+ **/
+cairo_bool_t
+cairo_font_options_equal (const cairo_font_options_t *options,
+			  const cairo_font_options_t *other)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return FALSE;
+    if (cairo_font_options_status ((cairo_font_options_t *) other))
+	return FALSE;
+
+    if (options == other)
+	return TRUE;
+
+    return (options->antialias == other->antialias &&
+	    options->subpixel_order == other->subpixel_order &&
+	    options->lcd_filter == other->lcd_filter &&
+	    options->hint_style == other->hint_style &&
+	    options->hint_metrics == other->hint_metrics &&
+	    options->round_glyph_positions == other->round_glyph_positions &&
+            ((options->variations == NULL && other->variations == NULL) ||
+             (options->variations != NULL && other->variations != NULL &&
+              strcmp (options->variations, other->variations) == 0)));
+}
+slim_hidden_def (cairo_font_options_equal);
+
+/**
+ * cairo_font_options_hash:
+ * @options: a #cairo_font_options_t
+ *
+ * Compute a hash for the font options object; this value will
+ * be useful when storing an object containing a #cairo_font_options_t
+ * in a hash table.
+ *
+ * Return value: the hash value for the font options object.
+ *   The return value can be cast to a 32-bit type if a
+ *   32-bit hash value is needed.
+ *
+ * Since: 1.0
+ **/
+unsigned long
+cairo_font_options_hash (const cairo_font_options_t *options)
+{
+    unsigned long hash = 0;
+
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	options = &_cairo_font_options_nil; /* force default values */
+
+    if (options->variations)
+      hash = _cairo_string_hash (options->variations, strlen (options->variations));
+
+    return ((options->antialias) |
+	    (options->subpixel_order << 4) |
+	    (options->lcd_filter << 8) |
+	    (options->hint_style << 12) |
+	    (options->hint_metrics << 16)) ^ hash;
+}
+slim_hidden_def (cairo_font_options_hash);
+
+/**
+ * cairo_font_options_set_antialias:
+ * @options: a #cairo_font_options_t
+ * @antialias: the new antialiasing mode
+ *
+ * Sets the antialiasing mode for the font options object. This
+ * specifies the type of antialiasing to do when rendering text.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_options_set_antialias (cairo_font_options_t *options,
+				  cairo_antialias_t     antialias)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    options->antialias = antialias;
+}
+slim_hidden_def (cairo_font_options_set_antialias);
+
+/**
+ * cairo_font_options_get_antialias:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the antialiasing mode for the font options object.
+ *
+ * Return value: the antialiasing mode
+ *
+ * Since: 1.0
+ **/
+cairo_antialias_t
+cairo_font_options_get_antialias (const cairo_font_options_t *options)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return CAIRO_ANTIALIAS_DEFAULT;
+
+    return options->antialias;
+}
+
+/**
+ * cairo_font_options_set_subpixel_order:
+ * @options: a #cairo_font_options_t
+ * @subpixel_order: the new subpixel order
+ *
+ * Sets the subpixel order for the font options object. The subpixel
+ * order specifies the order of color elements within each pixel on
+ * the display device when rendering with an antialiasing mode of
+ * %CAIRO_ANTIALIAS_SUBPIXEL. See the documentation for
+ * #cairo_subpixel_order_t for full details.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_options_set_subpixel_order (cairo_font_options_t   *options,
+				       cairo_subpixel_order_t  subpixel_order)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    options->subpixel_order = subpixel_order;
+}
+slim_hidden_def (cairo_font_options_set_subpixel_order);
+
+/**
+ * cairo_font_options_get_subpixel_order:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the subpixel order for the font options object.
+ * See the documentation for #cairo_subpixel_order_t for full details.
+ *
+ * Return value: the subpixel order for the font options object
+ *
+ * Since: 1.0
+ **/
+cairo_subpixel_order_t
+cairo_font_options_get_subpixel_order (const cairo_font_options_t *options)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return CAIRO_SUBPIXEL_ORDER_DEFAULT;
+
+    return options->subpixel_order;
+}
+
+/**
+ * _cairo_font_options_set_lcd_filter:
+ * @options: a #cairo_font_options_t
+ * @lcd_filter: the new LCD filter
+ *
+ * Sets the LCD filter for the font options object. The LCD filter
+ * specifies how pixels are filtered when rendered with an antialiasing
+ * mode of %CAIRO_ANTIALIAS_SUBPIXEL. See the documentation for
+ * #cairo_lcd_filter_t for full details.
+ **/
+void
+_cairo_font_options_set_lcd_filter (cairo_font_options_t *options,
+				    cairo_lcd_filter_t    lcd_filter)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    options->lcd_filter = lcd_filter;
+}
+
+/**
+ * _cairo_font_options_get_lcd_filter:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the LCD filter for the font options object.
+ * See the documentation for #cairo_lcd_filter_t for full details.
+ *
+ * Return value: the LCD filter for the font options object
+ **/
+cairo_lcd_filter_t
+_cairo_font_options_get_lcd_filter (const cairo_font_options_t *options)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return CAIRO_LCD_FILTER_DEFAULT;
+
+    return options->lcd_filter;
+}
+
+/**
+ * _cairo_font_options_set_round_glyph_positions:
+ * @options: a #cairo_font_options_t
+ * @round: the new rounding value
+ *
+ * Sets the rounding options for the font options object. If rounding is set, a
+ * glyph's position will be rounded to integer values.
+ **/
+void
+_cairo_font_options_set_round_glyph_positions (cairo_font_options_t *options,
+					       cairo_round_glyph_positions_t  round)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    options->round_glyph_positions = round;
+}
+
+/**
+ * _cairo_font_options_get_round_glyph_positions:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the glyph position rounding option for the font options object.
+ *
+ * Return value: The round glyph posistions flag for the font options object.
+ **/
+cairo_round_glyph_positions_t
+_cairo_font_options_get_round_glyph_positions (const cairo_font_options_t *options)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return CAIRO_ROUND_GLYPH_POS_DEFAULT;
+
+    return options->round_glyph_positions;
+}
+
+/**
+ * cairo_font_options_set_hint_style:
+ * @options: a #cairo_font_options_t
+ * @hint_style: the new hint style
+ *
+ * Sets the hint style for font outlines for the font options object.
+ * This controls whether to fit font outlines to the pixel grid,
+ * and if so, whether to optimize for fidelity or contrast.
+ * See the documentation for #cairo_hint_style_t for full details.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_options_set_hint_style (cairo_font_options_t *options,
+				   cairo_hint_style_t    hint_style)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    options->hint_style = hint_style;
+}
+slim_hidden_def (cairo_font_options_set_hint_style);
+
+/**
+ * cairo_font_options_get_hint_style:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the hint style for font outlines for the font options object.
+ * See the documentation for #cairo_hint_style_t for full details.
+ *
+ * Return value: the hint style for the font options object
+ *
+ * Since: 1.0
+ **/
+cairo_hint_style_t
+cairo_font_options_get_hint_style (const cairo_font_options_t *options)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return CAIRO_HINT_STYLE_DEFAULT;
+
+    return options->hint_style;
+}
+
+/**
+ * cairo_font_options_set_hint_metrics:
+ * @options: a #cairo_font_options_t
+ * @hint_metrics: the new metrics hinting mode
+ *
+ * Sets the metrics hinting mode for the font options object. This
+ * controls whether metrics are quantized to integer values in
+ * device units.
+ * See the documentation for #cairo_hint_metrics_t for full details.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_options_set_hint_metrics (cairo_font_options_t *options,
+				     cairo_hint_metrics_t  hint_metrics)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    options->hint_metrics = hint_metrics;
+}
+slim_hidden_def (cairo_font_options_set_hint_metrics);
+
+/**
+ * cairo_font_options_get_hint_metrics:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the metrics hinting mode for the font options object.
+ * See the documentation for #cairo_hint_metrics_t for full details.
+ *
+ * Return value: the metrics hinting mode for the font options object
+ *
+ * Since: 1.0
+ **/
+cairo_hint_metrics_t
+cairo_font_options_get_hint_metrics (const cairo_font_options_t *options)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return CAIRO_HINT_METRICS_DEFAULT;
+
+    return options->hint_metrics;
+}
+
+/**
+ * cairo_font_options_set_variations:
+ * @options: a #cairo_font_options_t
+ * @variations: the new font variations, or %NULL
+ *
+ * Sets the OpenType font variations for the font options object.
+ * Font variations are specified as a string with a format that
+ * is similar to the CSS font-variation-settings. The string contains
+ * a comma-separated list of axis assignments, which each assignment
+ * consists of a 4-character axis name and a value, separated by
+ * whitespace and optional equals sign.
+ *
+ * Examples:
+ *
+ * wght=200,wdth=140.5
+ *
+ * wght 200 , wdth 140.5
+ *
+ * Since: 1.16
+ **/
+void
+cairo_font_options_set_variations (cairo_font_options_t *options,
+                                   const char           *variations)
+{
+  char *tmp = variations ? strdup (variations) : NULL;
+  free (options->variations);
+  options->variations = tmp;
+}
+
+/**
+ * cairo_font_options_get_variations:
+ * @options: a #cairo_font_options_t
+ *
+ * Gets the OpenType font variations for the font options object.
+ * See cairo_font_options_set_variations() for details about the
+ * string format.
+ *
+ * Return value: the font variations for the font options object. The
+ *   returned string belongs to the @options and must not be modified.
+ *   It is valid until either the font options object is destroyed or
+ *   the font variations in this object is modified with
+ *   cairo_font_options_set_variations().
+ *
+ * Since: 1.16
+ **/
+const char *
+cairo_font_options_get_variations (cairo_font_options_t *options)
+{
+  return options->variations;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-fontconfig-private.h b/libs/cairo-1.16.0/src/cairo-fontconfig-private.h
new file mode 100644
index 0000000..ea873ab
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-fontconfig-private.h
@@ -0,0 +1,78 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2000 Keith Packard
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2010 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Graydon Hoare <graydon@redhat.com>
+ *	Owen Taylor <otaylor@redhat.com>
+ *      Keith Packard <keithp@keithp.com>
+ *      Carl Worth <cworth@cworth.org>
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef _CAIRO_FONTCONFIG_PRIVATE_H
+#define _CAIRO_FONTCONFIG_PRIVATE_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_FC_FONT
+#include <fontconfig/fontconfig.h>
+#include <fontconfig/fcfreetype.h>
+#endif
+
+/* sub-pixel order */
+#ifndef FC_RGBA_UNKNOWN
+#define FC_RGBA_UNKNOWN	    0
+#define FC_RGBA_RGB	    1
+#define FC_RGBA_BGR	    2
+#define FC_RGBA_VRGB	    3
+#define FC_RGBA_VBGR	    4
+#define FC_RGBA_NONE	    5
+#endif
+
+/* hinting style */
+#ifndef FC_HINT_NONE
+#define FC_HINT_NONE        0
+#define FC_HINT_SLIGHT      1
+#define FC_HINT_MEDIUM      2
+#define FC_HINT_FULL        3
+#endif
+
+/* LCD filter */
+#ifndef FC_LCD_NONE
+#define FC_LCD_NONE	    0
+#define FC_LCD_DEFAULT	    1
+#define FC_LCD_LIGHT	    2
+#define FC_LCD_LEGACY	    3
+#endif
+
+#endif /* _CAIRO_FONTCONFIG_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-freed-pool-private.h b/libs/cairo-1.16.0/src/cairo-freed-pool-private.h
new file mode 100644
index 0000000..8a7af52
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-freed-pool-private.h
@@ -0,0 +1,139 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_FREED_POOL_H
+#define CAIRO_FREED_POOL_H
+
+#include "cairoint.h"
+#include "cairo-atomic-private.h"
+
+CAIRO_BEGIN_DECLS
+
+#define DISABLE_FREED_POOLS 0
+
+#if HAS_ATOMIC_OPS && ! DISABLE_FREED_POOLS
+/* Keep a stash of recently freed clip_paths, since we need to
+ * reallocate them frequently.
+ */
+#define MAX_FREED_POOL_SIZE 16
+typedef struct {
+    void *pool[MAX_FREED_POOL_SIZE];
+    cairo_atomic_int_t top;
+} freed_pool_t;
+
+static cairo_always_inline void *
+_atomic_fetch (void **slot)
+{
+    void *ptr;
+
+    do {
+        ptr = _cairo_atomic_ptr_get (slot);
+    } while (! _cairo_atomic_ptr_cmpxchg (slot, ptr, NULL));
+
+    return ptr;
+}
+
+static cairo_always_inline cairo_bool_t
+_atomic_store (void **slot, void *ptr)
+{
+    return _cairo_atomic_ptr_cmpxchg (slot, NULL, ptr);
+}
+
+cairo_private void *
+_freed_pool_get_search (freed_pool_t *pool);
+
+static inline void *
+_freed_pool_get (freed_pool_t *pool)
+{
+    void *ptr;
+    int i;
+
+    i = _cairo_atomic_int_get_relaxed (&pool->top) - 1;
+    if (i < 0)
+	i = 0;
+
+    ptr = _atomic_fetch (&pool->pool[i]);
+    if (likely (ptr != NULL)) {
+	_cairo_atomic_int_set_relaxed (&pool->top, i);
+	return ptr;
+    }
+
+    /* either empty or contended */
+    return _freed_pool_get_search (pool);
+}
+
+cairo_private void
+_freed_pool_put_search (freed_pool_t *pool, void *ptr);
+
+static inline void
+_freed_pool_put (freed_pool_t *pool, void *ptr)
+{
+    int i;
+
+    i = _cairo_atomic_int_get_relaxed (&pool->top);
+    if (likely (i < ARRAY_LENGTH (pool->pool) &&
+		_atomic_store (&pool->pool[i], ptr)))
+    {
+	_cairo_atomic_int_set_relaxed (&pool->top, i + 1);
+	return;
+    }
+
+    /* either full or contended */
+    _freed_pool_put_search (pool, ptr);
+}
+
+cairo_private void
+_freed_pool_reset (freed_pool_t *pool);
+
+#define HAS_FREED_POOL 1
+
+#else
+
+/* A warning about an unused freed-pool in a build without atomics
+ * enabled usually indicates a missing _freed_pool_reset() in the
+ * static reset function */
+
+typedef int freed_pool_t;
+
+#define _freed_pool_get(pool) NULL
+#define _freed_pool_put(pool, ptr) free(ptr)
+#define _freed_pool_reset(ptr)
+
+#endif
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_FREED_POOL_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-freed-pool.c b/libs/cairo-1.16.0/src/cairo-freed-pool.c
new file mode 100644
index 0000000..5b1c4c0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-freed-pool.c
@@ -0,0 +1,93 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-freed-pool-private.h"
+
+#if HAS_FREED_POOL
+
+void *
+_freed_pool_get_search (freed_pool_t *pool)
+{
+    void *ptr;
+    int i;
+
+    for (i = ARRAY_LENGTH (pool->pool); i--;) {
+	ptr = _atomic_fetch (&pool->pool[i]);
+	if (ptr != NULL) {
+	    _cairo_atomic_int_set_relaxed (&pool->top, i);
+	    return ptr;
+	}
+    }
+
+    /* empty */
+    _cairo_atomic_int_set_relaxed (&pool->top, 0);
+    return NULL;
+}
+
+void
+_freed_pool_put_search (freed_pool_t *pool, void *ptr)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (pool->pool); i++) {
+	if (_atomic_store (&pool->pool[i], ptr)) {
+	    _cairo_atomic_int_set_relaxed (&pool->top, i + 1);
+	    return;
+	}
+    }
+
+    /* full */
+    _cairo_atomic_int_set_relaxed (&pool->top, i);
+    free (ptr);
+}
+
+void
+_freed_pool_reset (freed_pool_t *pool)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (pool->pool); i++) {
+	free (pool->pool[i]);
+	pool->pool[i] = NULL;
+    }
+
+    _cairo_atomic_int_set_relaxed (&pool->top, 0);
+}
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-freelist-private.h b/libs/cairo-1.16.0/src/cairo-freelist-private.h
new file mode 100644
index 0000000..f85f689
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-freelist-private.h
@@ -0,0 +1,139 @@
+/*
+ * Copyright © 2006 Joonas Pihlaja
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#ifndef CAIRO_FREELIST_H
+#define CAIRO_FREELIST_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-freelist-type-private.h"
+
+/* for stand-alone compilation*/
+#ifndef VG
+#define VG(x)
+#endif
+
+#ifndef NULL
+#define NULL (void *) 0
+#endif
+
+/* Initialise a freelist that will be responsible for allocating
+ * nodes of size nodesize. */
+cairo_private void
+_cairo_freelist_init (cairo_freelist_t *freelist, unsigned nodesize);
+
+/* Deallocate any nodes in the freelist. */
+cairo_private void
+_cairo_freelist_fini (cairo_freelist_t *freelist);
+
+/* Allocate a new node from the freelist.  If the freelist contains no
+ * nodes, a new one will be allocated using malloc().  The caller is
+ * responsible for calling _cairo_freelist_free() or free() on the
+ * returned node.  Returns %NULL on memory allocation error. */
+cairo_private void *
+_cairo_freelist_alloc (cairo_freelist_t *freelist);
+
+/* Allocate a new node from the freelist.  If the freelist contains no
+ * nodes, a new one will be allocated using calloc().  The caller is
+ * responsible for calling _cairo_freelist_free() or free() on the
+ * returned node.  Returns %NULL on memory allocation error. */
+cairo_private void *
+_cairo_freelist_calloc (cairo_freelist_t *freelist);
+
+/* Return a node to the freelist. This does not deallocate the memory,
+ * but makes it available for later reuse by
+ * _cairo_freelist_alloc(). */
+cairo_private void
+_cairo_freelist_free (cairo_freelist_t *freelist, void *node);
+
+
+cairo_private void
+_cairo_freepool_init (cairo_freepool_t *freepool, unsigned nodesize);
+
+cairo_private void
+_cairo_freepool_fini (cairo_freepool_t *freepool);
+
+static inline void
+_cairo_freepool_reset (cairo_freepool_t *freepool)
+{
+    while (freepool->pools != &freepool->embedded_pool) {
+	cairo_freelist_pool_t *pool = freepool->pools;
+	freepool->pools = pool->next;
+	pool->next = freepool->freepools;
+	freepool->freepools = pool;
+    }
+
+    freepool->embedded_pool.rem = sizeof (freepool->embedded_data);
+    freepool->embedded_pool.data = freepool->embedded_data;
+}
+
+cairo_private void *
+_cairo_freepool_alloc_from_new_pool (cairo_freepool_t *freepool);
+
+static inline void *
+_cairo_freepool_alloc_from_pool (cairo_freepool_t *freepool)
+{
+    cairo_freelist_pool_t *pool;
+    uint8_t *ptr;
+
+    pool = freepool->pools;
+    if (unlikely (freepool->nodesize > pool->rem))
+	return _cairo_freepool_alloc_from_new_pool (freepool);
+
+    ptr = pool->data;
+    pool->data += freepool->nodesize;
+    pool->rem -= freepool->nodesize;
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (ptr, freepool->nodesize));
+    return ptr;
+}
+
+static inline void *
+_cairo_freepool_alloc (cairo_freepool_t *freepool)
+{
+    cairo_freelist_node_t *node;
+
+    node = freepool->first_free_node;
+    if (node == NULL)
+	return _cairo_freepool_alloc_from_pool (freepool);
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (node, sizeof (node->next)));
+    freepool->first_free_node = node->next;
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (node, freepool->nodesize));
+
+    return node;
+}
+
+cairo_private cairo_status_t
+_cairo_freepool_alloc_array (cairo_freepool_t *freepool,
+			     int count,
+			     void **array);
+
+static inline void
+_cairo_freepool_free (cairo_freepool_t *freepool, void *ptr)
+{
+    cairo_freelist_node_t *node = ptr;
+
+    node->next = freepool->first_free_node;
+    freepool->first_free_node = node;
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (node, freepool->nodesize));
+}
+
+#endif /* CAIRO_FREELIST_H */
diff --git a/libs/cairo-1.16.0/src/cairo-freelist-type-private.h b/libs/cairo-1.16.0/src/cairo-freelist-type-private.h
new file mode 100644
index 0000000..4dd0564
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-freelist-type-private.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright © 2010 Joonas Pihlaja
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#ifndef CAIRO_FREELIST_TYPE_H
+#define CAIRO_FREELIST_TYPE_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+
+typedef struct _cairo_freelist_node cairo_freelist_node_t;
+struct _cairo_freelist_node {
+    cairo_freelist_node_t *next;
+};
+
+typedef struct _cairo_freelist {
+    cairo_freelist_node_t *first_free_node;
+    unsigned nodesize;
+} cairo_freelist_t;
+
+typedef struct _cairo_freelist_pool cairo_freelist_pool_t;
+struct _cairo_freelist_pool {
+    cairo_freelist_pool_t *next;
+    unsigned size, rem;
+    uint8_t *data;
+};
+
+typedef struct _cairo_freepool {
+    cairo_freelist_node_t *first_free_node;
+    cairo_freelist_pool_t *pools;
+    cairo_freelist_pool_t *freepools;
+    unsigned nodesize;
+    cairo_freelist_pool_t embedded_pool;
+    uint8_t embedded_data[1000];
+} cairo_freepool_t;
+
+#endif /* CAIRO_FREELIST_TYPE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-freelist.c b/libs/cairo-1.16.0/src/cairo-freelist.c
new file mode 100644
index 0000000..7f2f3b3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-freelist.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright © 2006 Joonas Pihlaja
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+
+void
+_cairo_freelist_init (cairo_freelist_t *freelist, unsigned nodesize)
+{
+    memset (freelist, 0, sizeof (cairo_freelist_t));
+    freelist->nodesize = nodesize;
+}
+
+void
+_cairo_freelist_fini (cairo_freelist_t *freelist)
+{
+    cairo_freelist_node_t *node = freelist->first_free_node;
+    while (node) {
+	cairo_freelist_node_t *next;
+
+	VG (VALGRIND_MAKE_MEM_DEFINED (node, sizeof (node->next)));
+	next = node->next;
+
+	free (node);
+	node = next;
+    }
+}
+
+void *
+_cairo_freelist_alloc (cairo_freelist_t *freelist)
+{
+    if (freelist->first_free_node) {
+	cairo_freelist_node_t *node;
+
+	node = freelist->first_free_node;
+	VG (VALGRIND_MAKE_MEM_DEFINED (node, sizeof (node->next)));
+	freelist->first_free_node = node->next;
+	VG (VALGRIND_MAKE_MEM_UNDEFINED (node, freelist->nodesize));
+
+	return node;
+    }
+
+    return _cairo_malloc (freelist->nodesize);
+}
+
+void *
+_cairo_freelist_calloc (cairo_freelist_t *freelist)
+{
+    void *node = _cairo_freelist_alloc (freelist);
+    if (node)
+	memset (node, 0, freelist->nodesize);
+    return node;
+}
+
+void
+_cairo_freelist_free (cairo_freelist_t *freelist, void *voidnode)
+{
+    cairo_freelist_node_t *node = voidnode;
+    if (node) {
+	node->next = freelist->first_free_node;
+	freelist->first_free_node = node;
+	VG (VALGRIND_MAKE_MEM_UNDEFINED (node, freelist->nodesize));
+    }
+}
+
+void
+_cairo_freepool_init (cairo_freepool_t *freepool, unsigned nodesize)
+{
+    freepool->first_free_node = NULL;
+    freepool->pools = &freepool->embedded_pool;
+    freepool->freepools = NULL;
+    freepool->nodesize = nodesize;
+
+    freepool->embedded_pool.next = NULL;
+    freepool->embedded_pool.size = sizeof (freepool->embedded_data);
+    freepool->embedded_pool.rem = sizeof (freepool->embedded_data);
+    freepool->embedded_pool.data = freepool->embedded_data;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (freepool->embedded_data, sizeof (freepool->embedded_data)));
+}
+
+void
+_cairo_freepool_fini (cairo_freepool_t *freepool)
+{
+    cairo_freelist_pool_t *pool;
+
+    pool = freepool->pools;
+    while (pool != &freepool->embedded_pool) {
+	cairo_freelist_pool_t *next = pool->next;
+	free (pool);
+	pool = next;
+    }
+
+    pool = freepool->freepools;
+    while (pool != NULL) {
+	cairo_freelist_pool_t *next = pool->next;
+	free (pool);
+	pool = next;
+    }
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (freepool, sizeof (freepool)));
+}
+
+void *
+_cairo_freepool_alloc_from_new_pool (cairo_freepool_t *freepool)
+{
+    cairo_freelist_pool_t *pool;
+    int poolsize;
+
+    if (freepool->freepools != NULL) {
+	pool = freepool->freepools;
+	freepool->freepools = pool->next;
+
+	poolsize = pool->size;
+    } else {
+	if (freepool->pools != &freepool->embedded_pool)
+	    poolsize = 2 * freepool->pools->size;
+	else
+	    poolsize = (128 * freepool->nodesize + 8191) & -8192;
+
+	pool = _cairo_malloc (sizeof (cairo_freelist_pool_t) + poolsize);
+	if (unlikely (pool == NULL))
+	    return pool;
+
+	pool->size = poolsize;
+    }
+
+    pool->next = freepool->pools;
+    freepool->pools = pool;
+
+    pool->rem = poolsize - freepool->nodesize;
+    pool->data = (uint8_t *) (pool + 1) + freepool->nodesize;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pool->data, pool->rem));
+
+    return pool + 1;
+}
+
+cairo_status_t
+_cairo_freepool_alloc_array (cairo_freepool_t *freepool,
+			     int count,
+			     void **array)
+{
+    int i;
+
+    for (i = 0; i < count; i++) {
+	cairo_freelist_node_t *node;
+
+	node = freepool->first_free_node;
+	if (likely (node != NULL)) {
+	    VG (VALGRIND_MAKE_MEM_DEFINED (node, sizeof (node->next)));
+	    freepool->first_free_node = node->next;
+	    VG (VALGRIND_MAKE_MEM_UNDEFINED (node, freepool->nodesize));
+	} else {
+	    node = _cairo_freepool_alloc_from_pool (freepool);
+	    if (unlikely (node == NULL))
+		goto CLEANUP;
+	}
+
+	array[i] = node;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP:
+    while (i--)
+	_cairo_freepool_free (freepool, array[i]);
+
+    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-ft-font.c b/libs/cairo-1.16.0/src/cairo-ft-font.c
new file mode 100644
index 0000000..325dd61
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-ft-font.c
@@ -0,0 +1,3935 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2000 Keith Packard
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Graydon Hoare <graydon@redhat.com>
+ *	Owen Taylor <otaylor@redhat.com>
+ *      Keith Packard <keithp@keithp.com>
+ *      Carl Worth <cworth@cworth.org>
+ */
+
+#define _DEFAULT_SOURCE /* for strdup() */
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-ft-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-pixman-private.h"
+
+#include <float.h>
+
+#include "cairo-fontconfig-private.h"
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_OUTLINE_H
+#include FT_IMAGE_H
+#include FT_BITMAP_H
+#include FT_TRUETYPE_TABLES_H
+#include FT_XFREE86_H
+#include FT_MULTIPLE_MASTERS_H
+#if HAVE_FT_GLYPHSLOT_EMBOLDEN
+#include FT_SYNTHESIS_H
+#endif
+
+#if HAVE_FT_LIBRARY_SETLCDFILTER
+#include FT_LCD_FILTER_H
+#endif
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#else
+#define access(p, m) 0
+#endif
+
+/* Fontconfig version older than 2.6 didn't have these options */
+#ifndef FC_LCD_FILTER
+#define FC_LCD_FILTER	"lcdfilter"
+#endif
+/* Some Ubuntu versions defined FC_LCD_FILTER without defining the following */
+#ifndef FC_LCD_NONE
+#define FC_LCD_NONE	0
+#define FC_LCD_DEFAULT	1
+#define FC_LCD_LIGHT	2
+#define FC_LCD_LEGACY	3
+#endif
+
+/* FreeType version older than 2.3.5(?) didn't have these options */
+#ifndef FT_LCD_FILTER_NONE
+#define FT_LCD_FILTER_NONE	0
+#define FT_LCD_FILTER_DEFAULT	1
+#define FT_LCD_FILTER_LIGHT	2
+#define FT_LCD_FILTER_LEGACY	16
+#endif
+
+#define DOUBLE_FROM_26_6(t) ((double)(t) / 64.0)
+#define DOUBLE_TO_16_16(d) ((FT_Fixed)((d) * 65536.0))
+#define DOUBLE_FROM_16_16(t) ((double)(t) / 65536.0)
+
+/* This is the max number of FT_face objects we keep open at once
+ */
+#define MAX_OPEN_FACES 10
+
+/**
+ * SECTION:cairo-ft
+ * @Title: FreeType Fonts
+ * @Short_Description: Font support for FreeType
+ * @See_Also: #cairo_font_face_t
+ *
+ * The FreeType font backend is primarily used to render text on GNU/Linux
+ * systems, but can be used on other platforms too.
+ **/
+
+/**
+ * CAIRO_HAS_FT_FONT:
+ *
+ * Defined if the FreeType font backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * CAIRO_HAS_FC_FONT:
+ *
+ * Defined if the Fontconfig-specific functions of the FreeType font backend
+ * are available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.10
+ **/
+
+/*
+ * The simple 2x2 matrix is converted into separate scale and shape
+ * factors so that hinting works right
+ */
+
+typedef struct _cairo_ft_font_transform {
+    double  x_scale, y_scale;
+    double  shape[2][2];
+} cairo_ft_font_transform_t;
+
+/*
+ * We create an object that corresponds to a single font on the disk;
+ * (identified by a filename/id pair) these are shared between all
+ * fonts using that file.  For cairo_ft_font_face_create_for_ft_face(), we
+ * just create a one-off version with a permanent face value.
+ */
+
+typedef struct _cairo_ft_font_face cairo_ft_font_face_t;
+
+struct _cairo_ft_unscaled_font {
+    cairo_unscaled_font_t base;
+
+    cairo_bool_t from_face; /* was the FT_Face provided by user? */
+    FT_Face face;	    /* provided or cached face */
+
+    /* only set if from_face is false */
+    char *filename;
+    int id;
+
+    /* We temporarily scale the unscaled font as needed */
+    cairo_bool_t have_scale;
+    cairo_matrix_t current_scale;
+    double x_scale;		/* Extracted X scale factor */
+    double y_scale;             /* Extracted Y scale factor */
+    cairo_bool_t have_shape;	/* true if the current scale has a non-scale component*/
+    cairo_matrix_t current_shape;
+    FT_Matrix Current_Shape;
+
+    unsigned int have_color_set  : 1;
+    unsigned int have_color      : 1;  /* true if the font contains color glyphs */
+    FT_Fixed *variations;              /* variation settings that FT_Face came */
+
+    cairo_mutex_t mutex;
+    int lock_count;
+
+    cairo_ft_font_face_t *faces;	/* Linked list of faces for this font */
+};
+
+static int
+_cairo_ft_unscaled_font_keys_equal (const void *key_a,
+				    const void *key_b);
+
+static void
+_cairo_ft_unscaled_font_fini (cairo_ft_unscaled_font_t *unscaled);
+
+typedef struct _cairo_ft_options {
+    cairo_font_options_t base;
+    unsigned int load_flags; /* flags for FT_Load_Glyph */
+    unsigned int synth_flags;
+} cairo_ft_options_t;
+
+static void
+_cairo_ft_options_init_copy (cairo_ft_options_t       *options,
+                             const cairo_ft_options_t *other)
+{
+    _cairo_font_options_init_copy (&options->base, &other->base);
+    options->load_flags = other->load_flags;
+    options->synth_flags = other->synth_flags;
+}
+
+static void
+_cairo_ft_options_fini (cairo_ft_options_t *options)
+{
+    _cairo_font_options_fini (&options->base);
+}
+
+struct _cairo_ft_font_face {
+    cairo_font_face_t base;
+
+    cairo_ft_unscaled_font_t *unscaled;
+    cairo_ft_options_t ft_options;
+    cairo_ft_font_face_t *next;
+
+#if CAIRO_HAS_FC_FONT
+    FcPattern *pattern; /* if pattern is set, the above fields will be NULL */
+    cairo_font_face_t *resolved_font_face;
+    FcConfig *resolved_config;
+#endif
+};
+
+static const cairo_unscaled_font_backend_t cairo_ft_unscaled_font_backend;
+
+#if CAIRO_HAS_FC_FONT
+static cairo_status_t
+_cairo_ft_font_options_substitute (const cairo_font_options_t *options,
+				   FcPattern                  *pattern);
+
+static cairo_font_face_t *
+_cairo_ft_resolve_pattern (FcPattern		      *pattern,
+			   const cairo_matrix_t       *font_matrix,
+			   const cairo_matrix_t       *ctm,
+			   const cairo_font_options_t *options);
+
+#endif
+
+static cairo_status_t
+_ft_to_cairo_error (FT_Error error)
+{
+  /* Currently we don't get many (any?) useful statuses here.
+   * Populate as needed. */
+  switch (error)
+  {
+  case FT_Err_Out_Of_Memory:
+      return CAIRO_STATUS_NO_MEMORY;
+  default:
+      return CAIRO_STATUS_FREETYPE_ERROR;
+  }
+}
+
+/*
+ * We maintain a hash table to map file/id => #cairo_ft_unscaled_font_t.
+ * The hash table itself isn't limited in size. However, we limit the
+ * number of FT_Face objects we keep around; when we've exceeded that
+ * limit and need to create a new FT_Face, we dump the FT_Face from a
+ * random #cairo_ft_unscaled_font_t which has an unlocked FT_Face, (if
+ * there are any).
+ */
+
+typedef struct _cairo_ft_unscaled_font_map {
+    cairo_hash_table_t *hash_table;
+    FT_Library ft_library;
+    int num_open_faces;
+} cairo_ft_unscaled_font_map_t;
+
+static cairo_ft_unscaled_font_map_t *cairo_ft_unscaled_font_map = NULL;
+
+
+static FT_Face
+_cairo_ft_unscaled_font_lock_face (cairo_ft_unscaled_font_t *unscaled);
+
+static void
+_cairo_ft_unscaled_font_unlock_face (cairo_ft_unscaled_font_t *unscaled);
+
+static cairo_bool_t
+_cairo_ft_scaled_font_is_vertical (cairo_scaled_font_t *scaled_font);
+
+
+static void
+_font_map_release_face_lock_held (cairo_ft_unscaled_font_map_t *font_map,
+				  cairo_ft_unscaled_font_t *unscaled)
+{
+    if (unscaled->face) {
+	FT_Done_Face (unscaled->face);
+	unscaled->face = NULL;
+	unscaled->have_scale = FALSE;
+
+	font_map->num_open_faces--;
+    }
+}
+
+static cairo_status_t
+_cairo_ft_unscaled_font_map_create (void)
+{
+    cairo_ft_unscaled_font_map_t *font_map;
+
+    /* This function is only intended to be called from
+     * _cairo_ft_unscaled_font_map_lock. So we'll crash if we can
+     * detect some other call path. */
+    assert (cairo_ft_unscaled_font_map == NULL);
+
+    font_map = _cairo_malloc (sizeof (cairo_ft_unscaled_font_map_t));
+    if (unlikely (font_map == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font_map->hash_table =
+	_cairo_hash_table_create (_cairo_ft_unscaled_font_keys_equal);
+
+    if (unlikely (font_map->hash_table == NULL))
+	goto FAIL;
+
+    if (unlikely (FT_Init_FreeType (&font_map->ft_library)))
+	goto FAIL;
+
+    font_map->num_open_faces = 0;
+
+    cairo_ft_unscaled_font_map = font_map;
+    return CAIRO_STATUS_SUCCESS;
+
+FAIL:
+    if (font_map->hash_table)
+	_cairo_hash_table_destroy (font_map->hash_table);
+    free (font_map);
+
+    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+}
+
+
+static void
+_cairo_ft_unscaled_font_map_pluck_entry (void *entry, void *closure)
+{
+    cairo_ft_unscaled_font_t *unscaled = entry;
+    cairo_ft_unscaled_font_map_t *font_map = closure;
+
+    _cairo_hash_table_remove (font_map->hash_table,
+			      &unscaled->base.hash_entry);
+
+    if (! unscaled->from_face)
+	_font_map_release_face_lock_held (font_map, unscaled);
+
+    _cairo_ft_unscaled_font_fini (unscaled);
+    free (unscaled);
+}
+
+static void
+_cairo_ft_unscaled_font_map_destroy (void)
+{
+    cairo_ft_unscaled_font_map_t *font_map;
+
+    CAIRO_MUTEX_LOCK (_cairo_ft_unscaled_font_map_mutex);
+    font_map = cairo_ft_unscaled_font_map;
+    cairo_ft_unscaled_font_map = NULL;
+    CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex);
+
+    if (font_map != NULL) {
+	_cairo_hash_table_foreach (font_map->hash_table,
+				   _cairo_ft_unscaled_font_map_pluck_entry,
+				   font_map);
+	assert (font_map->num_open_faces == 0);
+
+	FT_Done_FreeType (font_map->ft_library);
+
+	_cairo_hash_table_destroy (font_map->hash_table);
+
+	free (font_map);
+    }
+}
+
+static cairo_ft_unscaled_font_map_t *
+_cairo_ft_unscaled_font_map_lock (void)
+{
+    CAIRO_MUTEX_LOCK (_cairo_ft_unscaled_font_map_mutex);
+
+    if (unlikely (cairo_ft_unscaled_font_map == NULL)) {
+	if (unlikely (_cairo_ft_unscaled_font_map_create ())) {
+	    CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex);
+	    return NULL;
+	}
+    }
+
+    return cairo_ft_unscaled_font_map;
+}
+
+static void
+_cairo_ft_unscaled_font_map_unlock (void)
+{
+    CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex);
+}
+
+static void
+_cairo_ft_unscaled_font_init_key (cairo_ft_unscaled_font_t *key,
+				  cairo_bool_t              from_face,
+				  char			   *filename,
+				  int			    id,
+				  FT_Face		    face)
+{
+    unsigned long hash;
+
+    key->from_face = from_face;
+    key->filename = filename;
+    key->id = id;
+    key->face = face;
+
+    hash = _cairo_hash_string (filename);
+    /* the constants are just arbitrary primes */
+    hash += ((unsigned long) id) * 1607;
+    hash += ((unsigned long) face) * 2137;
+
+    key->base.hash_entry.hash = hash;
+}
+
+/**
+ * _cairo_ft_unscaled_font_init:
+ *
+ * Initialize a #cairo_ft_unscaled_font_t.
+ *
+ * There are two basic flavors of #cairo_ft_unscaled_font_t, one
+ * created from an FT_Face and the other created from a filename/id
+ * pair. These two flavors are identified as from_face and !from_face.
+ *
+ * To initialize a from_face font, pass filename==%NULL, id=0 and the
+ * desired face.
+ *
+ * To initialize a !from_face font, pass the filename/id as desired
+ * and face==%NULL.
+ *
+ * Note that the code handles these two flavors in very distinct
+ * ways. For example there is a hash_table mapping
+ * filename/id->#cairo_unscaled_font_t in the !from_face case, but no
+ * parallel in the from_face case, (where the calling code would have
+ * to do its own mapping to ensure similar sharing).
+ **/
+static cairo_status_t
+_cairo_ft_unscaled_font_init (cairo_ft_unscaled_font_t *unscaled,
+			      cairo_bool_t              from_face,
+			      const char	       *filename,
+			      int			id,
+			      FT_Face			face)
+{
+    _cairo_unscaled_font_init (&unscaled->base,
+			       &cairo_ft_unscaled_font_backend);
+
+    unscaled->variations = NULL;
+
+    if (from_face) {
+	unscaled->from_face = TRUE;
+	_cairo_ft_unscaled_font_init_key (unscaled, TRUE, NULL, id, face);
+
+
+        unscaled->have_color = FT_HAS_COLOR (face) != 0;
+        unscaled->have_color_set = TRUE;
+
+#ifdef HAVE_FT_GET_VAR_DESIGN_COORDINATES
+	{
+	    FT_MM_Var *ft_mm_var;
+	    if (0 == FT_Get_MM_Var (face, &ft_mm_var))
+	    {
+		unscaled->variations = calloc (ft_mm_var->num_axis, sizeof (FT_Fixed));
+		if (unscaled->variations)
+		    FT_Get_Var_Design_Coordinates (face, ft_mm_var->num_axis, unscaled->variations);
+	    }
+	}
+#endif
+    } else {
+	char *filename_copy;
+
+	unscaled->from_face = FALSE;
+	unscaled->face = NULL;
+
+	filename_copy = strdup (filename);
+	if (unlikely (filename_copy == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_ft_unscaled_font_init_key (unscaled, FALSE, filename_copy, id, NULL);
+
+	unscaled->have_color_set = FALSE;
+    }
+
+    unscaled->have_scale = FALSE;
+    CAIRO_MUTEX_INIT (unscaled->mutex);
+    unscaled->lock_count = 0;
+
+    unscaled->faces = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_ft_unscaled_font_fini:
+ *
+ * Free all data associated with a #cairo_ft_unscaled_font_t.
+ *
+ * CAUTION: The unscaled->face field must be %NULL before calling this
+ * function. This is because the #cairo_ft_unscaled_font_t_map keeps a
+ * count of these faces (font_map->num_open_faces) so it maintains the
+ * unscaled->face field while it has its lock held. See
+ * _font_map_release_face_lock_held().
+ **/
+static void
+_cairo_ft_unscaled_font_fini (cairo_ft_unscaled_font_t *unscaled)
+{
+    assert (unscaled->face == NULL);
+
+    free (unscaled->filename);
+    unscaled->filename = NULL;
+
+    free (unscaled->variations);
+
+    CAIRO_MUTEX_FINI (unscaled->mutex);
+}
+
+static int
+_cairo_ft_unscaled_font_keys_equal (const void *key_a,
+				    const void *key_b)
+{
+    const cairo_ft_unscaled_font_t *unscaled_a = key_a;
+    const cairo_ft_unscaled_font_t *unscaled_b = key_b;
+
+    if (unscaled_a->id == unscaled_b->id &&
+	unscaled_a->from_face == unscaled_b->from_face)
+     {
+        if (unscaled_a->from_face)
+	    return unscaled_a->face == unscaled_b->face;
+
+	if (unscaled_a->filename == NULL && unscaled_b->filename == NULL)
+	    return TRUE;
+	else if (unscaled_a->filename == NULL || unscaled_b->filename == NULL)
+	    return FALSE;
+	else
+	    return (strcmp (unscaled_a->filename, unscaled_b->filename) == 0);
+    }
+
+    return FALSE;
+}
+
+/* Finds or creates a #cairo_ft_unscaled_font_t for the filename/id from
+ * pattern.  Returns a new reference to the unscaled font.
+ */
+static cairo_status_t
+_cairo_ft_unscaled_font_create_internal (cairo_bool_t from_face,
+					 char *filename,
+					 int id,
+					 FT_Face font_face,
+					 cairo_ft_unscaled_font_t **out)
+{
+    cairo_ft_unscaled_font_t key, *unscaled;
+    cairo_ft_unscaled_font_map_t *font_map;
+    cairo_status_t status;
+
+    font_map = _cairo_ft_unscaled_font_map_lock ();
+    if (unlikely (font_map == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_ft_unscaled_font_init_key (&key, from_face, filename, id, font_face);
+
+    /* Return existing unscaled font if it exists in the hash table. */
+    unscaled = _cairo_hash_table_lookup (font_map->hash_table,
+					 &key.base.hash_entry);
+    if (unscaled != NULL) {
+	_cairo_unscaled_font_reference (&unscaled->base);
+	goto DONE;
+    }
+
+    /* Otherwise create it and insert into hash table. */
+    unscaled = _cairo_malloc (sizeof (cairo_ft_unscaled_font_t));
+    if (unlikely (unscaled == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto UNWIND_FONT_MAP_LOCK;
+    }
+
+    status = _cairo_ft_unscaled_font_init (unscaled, from_face, filename, id, font_face);
+    if (unlikely (status))
+	goto UNWIND_UNSCALED_MALLOC;
+
+    assert (unscaled->base.hash_entry.hash == key.base.hash_entry.hash);
+    status = _cairo_hash_table_insert (font_map->hash_table,
+				       &unscaled->base.hash_entry);
+    if (unlikely (status))
+	goto UNWIND_UNSCALED_FONT_INIT;
+
+DONE:
+    _cairo_ft_unscaled_font_map_unlock ();
+    *out = unscaled;
+    return CAIRO_STATUS_SUCCESS;
+
+UNWIND_UNSCALED_FONT_INIT:
+    _cairo_ft_unscaled_font_fini (unscaled);
+UNWIND_UNSCALED_MALLOC:
+    free (unscaled);
+UNWIND_FONT_MAP_LOCK:
+    _cairo_ft_unscaled_font_map_unlock ();
+    return status;
+}
+
+
+#if CAIRO_HAS_FC_FONT
+static cairo_status_t
+_cairo_ft_unscaled_font_create_for_pattern (FcPattern *pattern,
+					    cairo_ft_unscaled_font_t **out)
+{
+    FT_Face font_face = NULL;
+    char *filename = NULL;
+    int id = 0;
+    FcResult ret;
+
+    ret = FcPatternGetFTFace (pattern, FC_FT_FACE, 0, &font_face);
+    if (ret == FcResultMatch)
+	goto DONE;
+    if (ret == FcResultOutOfMemory)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    ret = FcPatternGetString (pattern, FC_FILE, 0, (FcChar8 **) &filename);
+    if (ret == FcResultOutOfMemory)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    if (ret == FcResultMatch) {
+	if (access (filename, R_OK) == 0) {
+	    /* If FC_INDEX is not set, we just use 0 */
+	    ret = FcPatternGetInteger (pattern, FC_INDEX, 0, &id);
+	    if (ret == FcResultOutOfMemory)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    goto DONE;
+	} else
+	    return _cairo_error (CAIRO_STATUS_FILE_NOT_FOUND);
+    }
+
+    /* The pattern contains neither a face nor a filename, resolve it later. */
+    *out = NULL;
+    return CAIRO_STATUS_SUCCESS;
+
+DONE:
+    return _cairo_ft_unscaled_font_create_internal (font_face != NULL,
+						    filename, id, font_face,
+						    out);
+}
+#endif
+
+static cairo_status_t
+_cairo_ft_unscaled_font_create_from_face (FT_Face face,
+					  cairo_ft_unscaled_font_t **out)
+{
+    return _cairo_ft_unscaled_font_create_internal (TRUE, NULL, face->face_index, face, out);
+}
+
+static cairo_bool_t
+_cairo_ft_unscaled_font_destroy (void *abstract_font)
+{
+    cairo_ft_unscaled_font_t *unscaled  = abstract_font;
+    cairo_ft_unscaled_font_map_t *font_map;
+
+    font_map = _cairo_ft_unscaled_font_map_lock ();
+    /* All created objects must have been mapped in the font map. */
+    assert (font_map != NULL);
+
+    if (! _cairo_reference_count_dec_and_test (&unscaled->base.ref_count)) {
+	/* somebody recreated the font whilst we waited for the lock */
+	_cairo_ft_unscaled_font_map_unlock ();
+	return FALSE;
+    }
+
+    _cairo_hash_table_remove (font_map->hash_table,
+			      &unscaled->base.hash_entry);
+
+    if (unscaled->from_face) {
+	/* See comments in _ft_font_face_destroy about the "zombie" state
+	 * for a _ft_font_face.
+	 */
+	if (unscaled->faces && unscaled->faces->unscaled == NULL) {
+	    assert (unscaled->faces->next == NULL);
+	    cairo_font_face_destroy (&unscaled->faces->base);
+	}
+    } else {
+	_font_map_release_face_lock_held (font_map, unscaled);
+    }
+    unscaled->face = NULL;
+
+    _cairo_ft_unscaled_font_map_unlock ();
+
+    _cairo_ft_unscaled_font_fini (unscaled);
+    return TRUE;
+}
+
+static cairo_bool_t
+_has_unlocked_face (const void *entry)
+{
+    const cairo_ft_unscaled_font_t *unscaled = entry;
+
+    return (!unscaled->from_face && unscaled->lock_count == 0 && unscaled->face);
+}
+
+/* Ensures that an unscaled font has a face object. If we exceed
+ * MAX_OPEN_FACES, try to close some.
+ *
+ * This differs from _cairo_ft_scaled_font_lock_face in that it doesn't
+ * set the scale on the face, but just returns it at the last scale.
+ */
+static cairo_warn FT_Face
+_cairo_ft_unscaled_font_lock_face (cairo_ft_unscaled_font_t *unscaled)
+{
+    cairo_ft_unscaled_font_map_t *font_map;
+    FT_Face face = NULL;
+    FT_Error error;
+
+    CAIRO_MUTEX_LOCK (unscaled->mutex);
+    unscaled->lock_count++;
+
+    if (unscaled->face)
+	return unscaled->face;
+
+    /* If this unscaled font was created from an FT_Face then we just
+     * returned it above. */
+    assert (!unscaled->from_face);
+
+    font_map = _cairo_ft_unscaled_font_map_lock ();
+    {
+	assert (font_map != NULL);
+
+	while (font_map->num_open_faces >= MAX_OPEN_FACES)
+	{
+	    cairo_ft_unscaled_font_t *entry;
+
+	    entry = _cairo_hash_table_random_entry (font_map->hash_table,
+						    _has_unlocked_face);
+	    if (entry == NULL)
+		break;
+
+	    _font_map_release_face_lock_held (font_map, entry);
+	}
+    }
+    _cairo_ft_unscaled_font_map_unlock ();
+
+    error = FT_New_Face (font_map->ft_library,
+			 unscaled->filename,
+			 unscaled->id,
+			 &face);
+    if (error)
+    {
+	unscaled->lock_count--;
+	CAIRO_MUTEX_UNLOCK (unscaled->mutex);
+	_cairo_error_throw (_ft_to_cairo_error (error));
+	return NULL;
+    }
+
+    unscaled->face = face;
+
+    unscaled->have_color = FT_HAS_COLOR (face) != 0;
+    unscaled->have_color_set = TRUE;
+
+    font_map->num_open_faces++;
+
+    return face;
+}
+
+
+/* Unlock unscaled font locked with _cairo_ft_unscaled_font_lock_face
+ */
+static void
+_cairo_ft_unscaled_font_unlock_face (cairo_ft_unscaled_font_t *unscaled)
+{
+    assert (unscaled->lock_count > 0);
+
+    unscaled->lock_count--;
+
+    CAIRO_MUTEX_UNLOCK (unscaled->mutex);
+}
+
+
+static cairo_status_t
+_compute_transform (cairo_ft_font_transform_t *sf,
+		    cairo_matrix_t      *scale,
+		    cairo_ft_unscaled_font_t *unscaled)
+{
+    cairo_status_t status;
+    double x_scale, y_scale;
+    cairo_matrix_t normalized = *scale;
+
+    /* The font matrix has x and y "scale" components which we extract and
+     * use as character scale values. These influence the way freetype
+     * chooses hints, as well as selecting different bitmaps in
+     * hand-rendered fonts. We also copy the normalized matrix to
+     * freetype's transformation.
+     */
+
+    status = _cairo_matrix_compute_basis_scale_factors (scale,
+						  &x_scale, &y_scale,
+						  1);
+    if (unlikely (status))
+	return status;
+
+    /* FreeType docs say this about x_scale and y_scale:
+     * "A character width or height smaller than 1pt is set to 1pt;"
+     * So, we cap them from below at 1.0 and let the FT transform
+     * take care of sub-1.0 scaling. */
+    if (x_scale < 1.0)
+      x_scale = 1.0;
+    if (y_scale < 1.0)
+      y_scale = 1.0;
+
+    if (unscaled && (unscaled->face->face_flags & FT_FACE_FLAG_SCALABLE) == 0) {
+	double min_distance = DBL_MAX;
+	cairo_bool_t magnify = TRUE;
+	int i;
+	double best_x_size = 0;
+	double best_y_size = 0;
+
+	for (i = 0; i < unscaled->face->num_fixed_sizes; i++) {
+	    double x_size = unscaled->face->available_sizes[i].x_ppem / 64.;
+	    double y_size = unscaled->face->available_sizes[i].y_ppem / 64.;
+	    double distance = y_size - y_scale;
+
+	    /*
+	     * distance is positive if current strike is larger than desired
+	     * size, and negative if smaller.
+	     *
+	     * We like to prefer down-scaling to upscaling.
+	     */
+
+	    if ((magnify && distance >= 0) || fabs (distance) <= min_distance) {
+		magnify = distance < 0;
+		min_distance = fabs (distance);
+		best_x_size = x_size;
+		best_y_size = y_size;
+	    }
+	}
+
+	x_scale = best_x_size;
+	y_scale = best_y_size;
+    }
+
+    sf->x_scale = x_scale;
+    sf->y_scale = y_scale;
+
+    cairo_matrix_scale (&normalized, 1.0 / x_scale, 1.0 / y_scale);
+
+    _cairo_matrix_get_affine (&normalized,
+			      &sf->shape[0][0], &sf->shape[0][1],
+			      &sf->shape[1][0], &sf->shape[1][1],
+			      NULL, NULL);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Temporarily scales an unscaled font to the give scale. We catch
+ * scaling to the same size, since changing a FT_Face is expensive.
+ */
+static cairo_status_t
+_cairo_ft_unscaled_font_set_scale (cairo_ft_unscaled_font_t *unscaled,
+				   cairo_matrix_t	      *scale)
+{
+    cairo_status_t status;
+    cairo_ft_font_transform_t sf;
+    FT_Matrix mat;
+    FT_Error error;
+
+    assert (unscaled->face != NULL);
+
+    if (unscaled->have_scale &&
+	scale->xx == unscaled->current_scale.xx &&
+	scale->yx == unscaled->current_scale.yx &&
+	scale->xy == unscaled->current_scale.xy &&
+	scale->yy == unscaled->current_scale.yy)
+	return CAIRO_STATUS_SUCCESS;
+
+    unscaled->have_scale = TRUE;
+    unscaled->current_scale = *scale;
+
+    status = _compute_transform (&sf, scale, unscaled);
+    if (unlikely (status))
+	return status;
+
+    unscaled->x_scale = sf.x_scale;
+    unscaled->y_scale = sf.y_scale;
+
+    mat.xx = DOUBLE_TO_16_16(sf.shape[0][0]);
+    mat.yx = - DOUBLE_TO_16_16(sf.shape[0][1]);
+    mat.xy = - DOUBLE_TO_16_16(sf.shape[1][0]);
+    mat.yy = DOUBLE_TO_16_16(sf.shape[1][1]);
+
+    unscaled->have_shape = (mat.xx != 0x10000 ||
+			    mat.yx != 0x00000 ||
+			    mat.xy != 0x00000 ||
+			    mat.yy != 0x10000);
+
+    unscaled->Current_Shape = mat;
+    cairo_matrix_init (&unscaled->current_shape,
+		       sf.shape[0][0], sf.shape[0][1],
+		       sf.shape[1][0], sf.shape[1][1],
+		       0.0, 0.0);
+
+    FT_Set_Transform(unscaled->face, &mat, NULL);
+
+    error = FT_Set_Char_Size (unscaled->face,
+			      sf.x_scale * 64.0 + .5,
+			      sf.y_scale * 64.0 + .5,
+			      0, 0);
+    if (error)
+      return _cairo_error (_ft_to_cairo_error (error));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* we sometimes need to convert the glyph bitmap in a FT_GlyphSlot
+ * into a different format. For example, we want to convert a
+ * FT_PIXEL_MODE_LCD or FT_PIXEL_MODE_LCD_V bitmap into a 32-bit
+ * ARGB or ABGR bitmap.
+ *
+ * this function prepares a target descriptor for this operation.
+ *
+ * input :: target bitmap descriptor. The function will set its
+ *          'width', 'rows' and 'pitch' fields, and only these
+ *
+ * slot  :: the glyph slot containing the source bitmap. this
+ *          function assumes that slot->format == FT_GLYPH_FORMAT_BITMAP
+ *
+ * mode  :: the requested final rendering mode. supported values are
+ *          MONO, NORMAL (i.e. gray), LCD and LCD_V
+ *
+ * the function returns the size in bytes of the corresponding buffer,
+ * it's up to the caller to allocate the corresponding memory block
+ * before calling _fill_xrender_bitmap
+ *
+ * it also returns -1 in case of error (e.g. incompatible arguments,
+ * like trying to convert a gray bitmap into a monochrome one)
+ */
+static int
+_compute_xrender_bitmap_size(FT_Bitmap      *target,
+			     FT_GlyphSlot    slot,
+			     FT_Render_Mode  mode)
+{
+    FT_Bitmap *ftbit;
+    int width, height, pitch;
+
+    if (slot->format != FT_GLYPH_FORMAT_BITMAP)
+	return -1;
+
+    /* compute the size of the final bitmap */
+    ftbit = &slot->bitmap;
+
+    width = ftbit->width;
+    height = ftbit->rows;
+    pitch = (width + 3) & ~3;
+
+    switch (ftbit->pixel_mode) {
+    case FT_PIXEL_MODE_MONO:
+	if (mode == FT_RENDER_MODE_MONO) {
+	    pitch = (((width + 31) & ~31) >> 3);
+	    break;
+	}
+	/* fall-through */
+
+    case FT_PIXEL_MODE_GRAY:
+	if (mode == FT_RENDER_MODE_LCD ||
+	    mode == FT_RENDER_MODE_LCD_V)
+	{
+	    /* each pixel is replicated into a 32-bit ARGB value */
+	    pitch = width * 4;
+	}
+	break;
+
+    case FT_PIXEL_MODE_LCD:
+	if (mode != FT_RENDER_MODE_LCD)
+	    return -1;
+
+	/* horz pixel triplets are packed into 32-bit ARGB values */
+	width /= 3;
+	pitch = width * 4;
+	break;
+
+    case FT_PIXEL_MODE_LCD_V:
+	if (mode != FT_RENDER_MODE_LCD_V)
+	    return -1;
+
+	/* vert pixel triplets are packed into 32-bit ARGB values */
+	height /= 3;
+	pitch = width * 4;
+	break;
+
+    case FT_PIXEL_MODE_BGRA:
+	/* each pixel is replicated into a 32-bit ARGB value */
+	pitch = width * 4;
+	break;
+
+    default:  /* unsupported source format */
+	return -1;
+    }
+
+    target->width = width;
+    target->rows = height;
+    target->pitch = pitch;
+    target->buffer = NULL;
+
+    return pitch * height;
+}
+
+/* this functions converts the glyph bitmap found in a FT_GlyphSlot
+ * into a different format (see _compute_xrender_bitmap_size)
+ *
+ * you should call this function after _compute_xrender_bitmap_size
+ *
+ * target :: target bitmap descriptor. Note that its 'buffer' pointer
+ *           must point to memory allocated by the caller
+ *
+ * slot   :: the glyph slot containing the source bitmap
+ *
+ * mode   :: the requested final rendering mode
+ *
+ * bgr    :: boolean, set if BGR or VBGR pixel ordering is needed
+ */
+static void
+_fill_xrender_bitmap(FT_Bitmap      *target,
+		     FT_GlyphSlot    slot,
+		     FT_Render_Mode  mode,
+		     int             bgr)
+{
+    FT_Bitmap *ftbit = &slot->bitmap;
+    unsigned char *srcLine = ftbit->buffer;
+    unsigned char *dstLine = target->buffer;
+    int src_pitch = ftbit->pitch;
+    int width = target->width;
+    int height = target->rows;
+    int pitch = target->pitch;
+    int subpixel;
+    int h;
+
+    subpixel = (mode == FT_RENDER_MODE_LCD ||
+		mode == FT_RENDER_MODE_LCD_V);
+
+    if (src_pitch < 0)
+	srcLine -= src_pitch * (ftbit->rows - 1);
+
+    target->pixel_mode = ftbit->pixel_mode;
+
+    switch (ftbit->pixel_mode) {
+    case FT_PIXEL_MODE_MONO:
+	if (subpixel) {
+	    /* convert mono to ARGB32 values */
+
+	    for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
+		int x;
+
+		for (x = 0; x < width; x++) {
+		    if (srcLine[(x >> 3)] & (0x80 >> (x & 7)))
+			((unsigned int *) dstLine)[x] = 0xffffffffU;
+		}
+	    }
+	    target->pixel_mode = FT_PIXEL_MODE_LCD;
+
+	} else if (mode == FT_RENDER_MODE_NORMAL) {
+	    /* convert mono to 8-bit gray */
+
+	    for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
+		int x;
+
+		for (x = 0; x < width; x++) {
+		    if (srcLine[(x >> 3)] & (0x80 >> (x & 7)))
+			dstLine[x] = 0xff;
+		}
+	    }
+	    target->pixel_mode = FT_PIXEL_MODE_GRAY;
+
+	} else {
+	    /* copy mono to mono */
+
+	    int  bytes = (width + 7) >> 3;
+
+	    for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)
+		memcpy (dstLine, srcLine, bytes);
+	}
+	break;
+
+    case FT_PIXEL_MODE_GRAY:
+	if (subpixel) {
+	    /* convert gray to ARGB32 values */
+
+	    for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
+		int x;
+		unsigned int *dst = (unsigned int *) dstLine;
+
+		for (x = 0; x < width; x++) {
+		    unsigned int pix = srcLine[x];
+
+		    pix |= (pix << 8);
+		    pix |= (pix << 16);
+
+		    dst[x] = pix;
+		}
+	    }
+	    target->pixel_mode = FT_PIXEL_MODE_LCD;
+        } else {
+            /* copy gray into gray */
+
+            for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)
+                memcpy (dstLine, srcLine, width);
+        }
+        break;
+
+    case FT_PIXEL_MODE_LCD:
+	if (!bgr) {
+	    /* convert horizontal RGB into ARGB32 */
+
+	    for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
+		int x;
+		unsigned char *src = srcLine;
+		unsigned int *dst = (unsigned int *) dstLine;
+
+		for (x = 0; x < width; x++, src += 3) {
+		    unsigned int  pix;
+
+		    pix = ((unsigned int)src[0] << 16) |
+			  ((unsigned int)src[1] <<  8) |
+			  ((unsigned int)src[2]      ) |
+			  ((unsigned int)src[1] << 24) ;
+
+		    dst[x] = pix;
+		}
+	    }
+	} else {
+	    /* convert horizontal BGR into ARGB32 */
+
+	    for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
+
+		int x;
+		unsigned char *src = srcLine;
+		unsigned int *dst = (unsigned int *) dstLine;
+
+		for (x = 0; x < width; x++, src += 3) {
+		    unsigned int  pix;
+
+		    pix = ((unsigned int)src[2] << 16) |
+			  ((unsigned int)src[1] <<  8) |
+			  ((unsigned int)src[0]      ) |
+			  ((unsigned int)src[1] << 24) ;
+
+		    dst[x] = pix;
+		}
+	    }
+	}
+	break;
+
+    case FT_PIXEL_MODE_LCD_V:
+	/* convert vertical RGB into ARGB32 */
+	if (!bgr) {
+
+	    for (h = height; h > 0; h--, srcLine += 3 * src_pitch, dstLine += pitch) {
+		int x;
+		unsigned char* src = srcLine;
+		unsigned int*  dst = (unsigned int *) dstLine;
+
+		for (x = 0; x < width; x++, src += 1) {
+		    unsigned int pix;
+		    pix = ((unsigned int)src[0]           << 16) |
+			  ((unsigned int)src[src_pitch]   <<  8) |
+			  ((unsigned int)src[src_pitch*2]      ) |
+			  ((unsigned int)src[src_pitch]   << 24) ;
+		    dst[x] = pix;
+		}
+	    }
+	} else {
+
+	    for (h = height; h > 0; h--, srcLine += 3*src_pitch, dstLine += pitch) {
+		int x;
+		unsigned char *src = srcLine;
+		unsigned int *dst = (unsigned int *) dstLine;
+
+		for (x = 0; x < width; x++, src += 1) {
+		    unsigned int  pix;
+
+		    pix = ((unsigned int)src[src_pitch * 2] << 16) |
+			  ((unsigned int)src[src_pitch]     <<  8) |
+			  ((unsigned int)src[0]                  ) |
+			  ((unsigned int)src[src_pitch]     << 24) ;
+
+		    dst[x] = pix;
+		}
+	    }
+	}
+	break;
+
+    case FT_PIXEL_MODE_BGRA:
+	for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)
+	    memcpy (dstLine, srcLine, width * 4);
+	break;
+
+    default:
+	assert (0);
+    }
+}
+
+
+/* Fills in val->image with an image surface created from @bitmap
+ */
+static cairo_status_t
+_get_bitmap_surface (FT_Bitmap		     *bitmap,
+		     FT_Library		      library,
+		     cairo_bool_t	      own_buffer,
+		     cairo_font_options_t    *font_options,
+		     cairo_image_surface_t  **surface)
+{
+    unsigned int width, height;
+    unsigned char *data;
+    int format = CAIRO_FORMAT_A8;
+    int stride;
+    cairo_image_surface_t *image;
+    cairo_bool_t component_alpha = FALSE;
+
+    width = bitmap->width;
+    height = bitmap->rows;
+
+    if (width == 0 || height == 0) {
+	*surface = (cairo_image_surface_t *)
+	    cairo_image_surface_create_for_data (NULL, format, 0, 0, 0);
+	return (*surface)->base.status;
+    }
+
+    switch (bitmap->pixel_mode) {
+    case FT_PIXEL_MODE_MONO:
+	stride = (((width + 31) & ~31) >> 3);
+	if (own_buffer) {
+	    data = bitmap->buffer;
+	    assert (stride == bitmap->pitch);
+	} else {
+	    data = _cairo_malloc_ab (height, stride);
+	    if (!data)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    if (stride == bitmap->pitch) {
+		memcpy (data, bitmap->buffer, stride * height);
+	    } else {
+		int i;
+		unsigned char *source, *dest;
+
+		source = bitmap->buffer;
+		dest = data;
+		for (i = height; i; i--) {
+		    memcpy (dest, source, bitmap->pitch);
+		    memset (dest + bitmap->pitch, '\0', stride - bitmap->pitch);
+
+		    source += bitmap->pitch;
+		    dest += stride;
+		}
+	    }
+	}
+
+#ifndef WORDS_BIGENDIAN
+	{
+	    uint8_t *d = data;
+	    int count = stride * height;
+
+	    while (count--) {
+		*d = CAIRO_BITSWAP8 (*d);
+		d++;
+	    }
+	}
+#endif
+	format = CAIRO_FORMAT_A1;
+	break;
+
+    case FT_PIXEL_MODE_LCD:
+    case FT_PIXEL_MODE_LCD_V:
+    case FT_PIXEL_MODE_GRAY:
+	if (font_options->antialias != CAIRO_ANTIALIAS_SUBPIXEL ||
+	    bitmap->pixel_mode == FT_PIXEL_MODE_GRAY)
+	{
+	    stride = bitmap->pitch;
+
+	    /* We don't support stride not multiple of 4. */
+	    if (stride & 3)
+	    {
+		assert (!own_buffer);
+		goto convert;
+	    }
+
+	    if (own_buffer) {
+		data = bitmap->buffer;
+	    } else {
+		data = _cairo_malloc_ab (height, stride);
+		if (!data)
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+		memcpy (data, bitmap->buffer, stride * height);
+	    }
+
+	    format = CAIRO_FORMAT_A8;
+	} else {
+	    data = bitmap->buffer;
+	    stride = bitmap->pitch;
+	    format = CAIRO_FORMAT_ARGB32;
+	    component_alpha = TRUE;
+	}
+	break;
+    case FT_PIXEL_MODE_BGRA:
+	stride = width * 4;
+	if (own_buffer) {
+	    data = bitmap->buffer;
+	} else {
+	    data = _cairo_malloc_ab (height, stride);
+	    if (!data)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (data, bitmap->buffer, stride * height);
+	}
+
+	if (!_cairo_is_little_endian ())
+	{
+	    /* Byteswap. */
+	    unsigned int i, count = height * width;
+	    uint32_t *p = (uint32_t *) data;
+	    for (i = 0; i < count; i++)
+		p[i] = be32_to_cpu (p[i]);
+	}
+	format = CAIRO_FORMAT_ARGB32;
+	break;
+    case FT_PIXEL_MODE_GRAY2:
+    case FT_PIXEL_MODE_GRAY4:
+    convert:
+	if (!own_buffer && library)
+	{
+	    /* This is pretty much the only case that we can get in here. */
+	    /* Convert to 8bit grayscale. */
+
+	    FT_Bitmap  tmp;
+	    FT_Int     align;
+	    FT_Error   error;
+
+	    format = CAIRO_FORMAT_A8;
+
+	    align = cairo_format_stride_for_width (format, bitmap->width);
+
+	    FT_Bitmap_New( &tmp );
+
+	    error = FT_Bitmap_Convert( library, bitmap, &tmp, align );
+	    if (error)
+		return _cairo_error (_ft_to_cairo_error (error));
+
+	    FT_Bitmap_Done( library, bitmap );
+	    *bitmap = tmp;
+
+	    stride = bitmap->pitch;
+	    data = _cairo_malloc_ab (height, stride);
+	    if (!data)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    if (bitmap->num_grays != 256)
+	    {
+	      unsigned int x, y;
+	      unsigned int mul = 255 / (bitmap->num_grays - 1);
+	      FT_Byte *p = bitmap->buffer;
+	      for (y = 0; y < height; y++) {
+	        for (x = 0; x < width; x++)
+		  p[x] *= mul;
+		p += bitmap->pitch;
+	      }
+	    }
+
+	    memcpy (data, bitmap->buffer, stride * height);
+	    break;
+	}
+	/* These could be triggered by very rare types of TrueType fonts */
+    default:
+	if (own_buffer)
+	    free (bitmap->buffer);
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    }
+
+    /* XXX */
+    *surface = image = (cairo_image_surface_t *)
+	cairo_image_surface_create_for_data (data,
+					     format,
+					     width, height, stride);
+    if (image->base.status) {
+	free (data);
+	return (*surface)->base.status;
+    }
+
+    if (component_alpha)
+	pixman_image_set_component_alpha (image->pixman_image, TRUE);
+
+    _cairo_image_surface_assume_ownership_of_data (image);
+
+    _cairo_debug_check_image_surface_is_defined (&image->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Converts an outline FT_GlyphSlot into an image
+ *
+ * This could go through _render_glyph_bitmap as well, letting
+ * FreeType convert the outline to a bitmap, but doing it ourselves
+ * has two minor advantages: first, we save a copy of the bitmap
+ * buffer: we can directly use the buffer that FreeType renders
+ * into.
+ *
+ * Second, it may help when we add support for subpixel
+ * rendering: the Xft code does it this way. (Keith thinks that
+ * it may also be possible to get the subpixel rendering with
+ * FT_Render_Glyph: something worth looking into in more detail
+ * when we add subpixel support. If so, we may want to eliminate
+ * this version of the code path entirely.
+ */
+static cairo_status_t
+_render_glyph_outline (FT_Face                    face,
+		       cairo_font_options_t	 *font_options,
+		       cairo_image_surface_t	**surface)
+{
+    int rgba = FC_RGBA_UNKNOWN;
+    int lcd_filter = FT_LCD_FILTER_LEGACY;
+    FT_GlyphSlot glyphslot = face->glyph;
+    FT_Outline *outline = &glyphslot->outline;
+    FT_Bitmap bitmap;
+    FT_BBox cbox;
+    unsigned int width, height;
+    cairo_status_t status;
+    FT_Error error;
+    FT_Library library = glyphslot->library;
+    FT_Render_Mode render_mode = FT_RENDER_MODE_NORMAL;
+
+    switch (font_options->antialias) {
+    case CAIRO_ANTIALIAS_NONE:
+	render_mode = FT_RENDER_MODE_MONO;
+	break;
+
+    case CAIRO_ANTIALIAS_SUBPIXEL:
+    case CAIRO_ANTIALIAS_BEST:
+	switch (font_options->subpixel_order) {
+	    case CAIRO_SUBPIXEL_ORDER_DEFAULT:
+	    case CAIRO_SUBPIXEL_ORDER_RGB:
+	    case CAIRO_SUBPIXEL_ORDER_BGR:
+		render_mode = FT_RENDER_MODE_LCD;
+		break;
+
+	    case CAIRO_SUBPIXEL_ORDER_VRGB:
+	    case CAIRO_SUBPIXEL_ORDER_VBGR:
+		render_mode = FT_RENDER_MODE_LCD_V;
+		break;
+	}
+
+	switch (font_options->lcd_filter) {
+	case CAIRO_LCD_FILTER_NONE:
+	    lcd_filter = FT_LCD_FILTER_NONE;
+	    break;
+	case CAIRO_LCD_FILTER_DEFAULT:
+	case CAIRO_LCD_FILTER_INTRA_PIXEL:
+	    lcd_filter = FT_LCD_FILTER_LEGACY;
+	    break;
+	case CAIRO_LCD_FILTER_FIR3:
+	    lcd_filter = FT_LCD_FILTER_LIGHT;
+	    break;
+	case CAIRO_LCD_FILTER_FIR5:
+	    lcd_filter = FT_LCD_FILTER_DEFAULT;
+	    break;
+	}
+
+	break;
+
+    case CAIRO_ANTIALIAS_DEFAULT:
+    case CAIRO_ANTIALIAS_GRAY:
+    case CAIRO_ANTIALIAS_GOOD:
+    case CAIRO_ANTIALIAS_FAST:
+	render_mode = FT_RENDER_MODE_NORMAL;
+    }
+
+    FT_Outline_Get_CBox (outline, &cbox);
+
+    cbox.xMin &= -64;
+    cbox.yMin &= -64;
+    cbox.xMax = (cbox.xMax + 63) & -64;
+    cbox.yMax = (cbox.yMax + 63) & -64;
+
+    width = (unsigned int) ((cbox.xMax - cbox.xMin) >> 6);
+    height = (unsigned int) ((cbox.yMax - cbox.yMin) >> 6);
+
+    if (width * height == 0) {
+	cairo_format_t format;
+	/* Looks like fb handles zero-sized images just fine */
+	switch (render_mode) {
+	case FT_RENDER_MODE_MONO:
+	    format = CAIRO_FORMAT_A1;
+	    break;
+	case FT_RENDER_MODE_LCD:
+	case FT_RENDER_MODE_LCD_V:
+	    format= CAIRO_FORMAT_ARGB32;
+	    break;
+	case FT_RENDER_MODE_LIGHT:
+	case FT_RENDER_MODE_NORMAL:
+	case FT_RENDER_MODE_MAX:
+	default:
+	    format = CAIRO_FORMAT_A8;
+	    break;
+	}
+
+	(*surface) = (cairo_image_surface_t *)
+	    cairo_image_surface_create_for_data (NULL, format, 0, 0, 0);
+	pixman_image_set_component_alpha ((*surface)->pixman_image, TRUE);
+	if ((*surface)->base.status)
+	    return (*surface)->base.status;
+    } else {
+
+	int bitmap_size;
+
+	switch (render_mode) {
+	case FT_RENDER_MODE_LCD:
+	    if (font_options->subpixel_order == CAIRO_SUBPIXEL_ORDER_BGR)
+		rgba = FC_RGBA_BGR;
+	    else
+		rgba = FC_RGBA_RGB;
+	    break;
+
+	case FT_RENDER_MODE_LCD_V:
+	    if (font_options->subpixel_order == CAIRO_SUBPIXEL_ORDER_VBGR)
+		rgba = FC_RGBA_VBGR;
+	    else
+		rgba = FC_RGBA_VRGB;
+	    break;
+
+	case FT_RENDER_MODE_MONO:
+	case FT_RENDER_MODE_LIGHT:
+	case FT_RENDER_MODE_NORMAL:
+	case FT_RENDER_MODE_MAX:
+	default:
+	    break;
+	}
+
+#if HAVE_FT_LIBRARY_SETLCDFILTER
+	FT_Library_SetLcdFilter (library, lcd_filter);
+#endif
+
+	error = FT_Render_Glyph (face->glyph, render_mode);
+
+#if HAVE_FT_LIBRARY_SETLCDFILTER
+	FT_Library_SetLcdFilter (library, FT_LCD_FILTER_NONE);
+#endif
+
+	if (error)
+	    return _cairo_error (_ft_to_cairo_error (error));
+
+	bitmap_size = _compute_xrender_bitmap_size (&bitmap,
+						    face->glyph,
+						    render_mode);
+	if (bitmap_size < 0)
+	    return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+
+	bitmap.buffer = calloc (1, bitmap_size);
+	if (bitmap.buffer == NULL)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_fill_xrender_bitmap (&bitmap, face->glyph, render_mode,
+			      (rgba == FC_RGBA_BGR || rgba == FC_RGBA_VBGR));
+
+	/* Note:
+	 * _get_bitmap_surface will free bitmap.buffer if there is an error
+	 */
+	status = _get_bitmap_surface (&bitmap, NULL, TRUE, font_options, surface);
+	if (unlikely (status))
+	    return status;
+
+	/* Note: the font's coordinate system is upside down from ours, so the
+	 * Y coordinate of the control box needs to be negated.  Moreover, device
+	 * offsets are position of glyph origin relative to top left while xMin
+	 * and yMax are offsets of top left relative to origin.  Another negation.
+	 */
+	cairo_surface_set_device_offset (&(*surface)->base,
+					 (double)-glyphslot->bitmap_left,
+					 (double)+glyphslot->bitmap_top);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Converts a bitmap (or other) FT_GlyphSlot into an image */
+static cairo_status_t
+_render_glyph_bitmap (FT_Face		      face,
+		      cairo_font_options_t   *font_options,
+		      cairo_image_surface_t **surface)
+{
+    FT_GlyphSlot glyphslot = face->glyph;
+    cairo_status_t status;
+    FT_Error error;
+
+    /* According to the FreeType docs, glyphslot->format could be
+     * something other than FT_GLYPH_FORMAT_OUTLINE or
+     * FT_GLYPH_FORMAT_BITMAP. Calling FT_Render_Glyph gives FreeType
+     * the opportunity to convert such to
+     * bitmap. FT_GLYPH_FORMAT_COMPOSITE will not be encountered since
+     * we avoid the FT_LOAD_NO_RECURSE flag.
+     */
+    error = FT_Render_Glyph (glyphslot, FT_RENDER_MODE_NORMAL);
+    /* XXX ignoring all other errors for now.  They are not fatal, typically
+     * just a glyph-not-found. */
+    if (error == FT_Err_Out_Of_Memory)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _get_bitmap_surface (&glyphslot->bitmap,
+				  glyphslot->library,
+				  FALSE, font_options,
+				  surface);
+    if (unlikely (status))
+	return status;
+
+    /*
+     * Note: the font's coordinate system is upside down from ours, so the
+     * Y coordinate of the control box needs to be negated.  Moreover, device
+     * offsets are position of glyph origin relative to top left while
+     * bitmap_left and bitmap_top are offsets of top left relative to origin.
+     * Another negation.
+     */
+    cairo_surface_set_device_offset (&(*surface)->base,
+				     -glyphslot->bitmap_left,
+				     +glyphslot->bitmap_top);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_transform_glyph_bitmap (cairo_matrix_t         * shape,
+			 cairo_image_surface_t ** surface)
+{
+    cairo_matrix_t original_to_transformed;
+    cairo_matrix_t transformed_to_original;
+    cairo_image_surface_t *old_image;
+    cairo_surface_t *image;
+    double x[4], y[4];
+    double origin_x, origin_y;
+    int orig_width, orig_height;
+    int i;
+    int x_min, y_min, x_max, y_max;
+    int width, height;
+    cairo_status_t status;
+    cairo_surface_pattern_t pattern;
+
+    /* We want to compute a transform that takes the origin
+     * (device_x_offset, device_y_offset) to 0,0, then applies
+     * the "shape" portion of the font transform
+     */
+    original_to_transformed = *shape;
+
+    cairo_surface_get_device_offset (&(*surface)->base, &origin_x, &origin_y);
+    orig_width = (*surface)->width;
+    orig_height = (*surface)->height;
+
+    cairo_matrix_translate (&original_to_transformed,
+			    -origin_x, -origin_y);
+
+    /* Find the bounding box of the original bitmap under that
+     * transform
+     */
+    x[0] = 0;          y[0] = 0;
+    x[1] = orig_width; y[1] = 0;
+    x[2] = orig_width; y[2] = orig_height;
+    x[3] = 0;          y[3] = orig_height;
+
+    for (i = 0; i < 4; i++)
+      cairo_matrix_transform_point (&original_to_transformed,
+				    &x[i], &y[i]);
+
+    x_min = floor (x[0]);   y_min = floor (y[0]);
+    x_max =  ceil (x[0]);   y_max =  ceil (y[0]);
+
+    for (i = 1; i < 4; i++) {
+	if (x[i] < x_min)
+	    x_min = floor (x[i]);
+	else if (x[i] > x_max)
+	    x_max = ceil (x[i]);
+	if (y[i] < y_min)
+	    y_min = floor (y[i]);
+	else if (y[i] > y_max)
+	    y_max = ceil (y[i]);
+    }
+
+    /* Adjust the transform so that the bounding box starts at 0,0 ...
+     * this gives our final transform from original bitmap to transformed
+     * bitmap.
+     */
+    original_to_transformed.x0 -= x_min;
+    original_to_transformed.y0 -= y_min;
+
+    /* Create the transformed bitmap */
+    width  = x_max - x_min;
+    height = y_max - y_min;
+
+    transformed_to_original = original_to_transformed;
+    status = cairo_matrix_invert (&transformed_to_original);
+    if (unlikely (status))
+	return status;
+
+    if ((*surface)->format == CAIRO_FORMAT_ARGB32 &&
+        !pixman_image_get_component_alpha ((*surface)->pixman_image))
+      image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+    else
+      image = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
+    if (unlikely (image->status))
+	return image->status;
+
+    /* Draw the original bitmap transformed into the new bitmap
+     */
+    _cairo_pattern_init_for_surface (&pattern, &(*surface)->base);
+    cairo_pattern_set_matrix (&pattern.base, &transformed_to_original);
+
+    status = _cairo_surface_paint (image,
+				   CAIRO_OPERATOR_SOURCE,
+				   &pattern.base,
+				   NULL);
+
+    _cairo_pattern_fini (&pattern.base);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	return status;
+    }
+
+    /* Now update the cache entry for the new bitmap, recomputing
+     * the origin based on the final transform.
+     */
+    cairo_matrix_transform_point (&original_to_transformed,
+				  &origin_x, &origin_y);
+
+    old_image = (*surface);
+    (*surface) = (cairo_image_surface_t *)image;
+
+    /* Note: we converted subpixel-rendered RGBA images to grayscale,
+     * so, no need to copy component alpha to new image. */
+
+    cairo_surface_destroy (&old_image->base);
+
+    cairo_surface_set_device_offset (&(*surface)->base,
+				     _cairo_lround (origin_x),
+				     _cairo_lround (origin_y));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_unscaled_font_backend_t cairo_ft_unscaled_font_backend = {
+    _cairo_ft_unscaled_font_destroy,
+#if 0
+    _cairo_ft_unscaled_font_create_glyph
+#endif
+};
+
+/* #cairo_ft_scaled_font_t */
+
+typedef struct _cairo_ft_scaled_font {
+    cairo_scaled_font_t base;
+    cairo_ft_unscaled_font_t *unscaled;
+    cairo_ft_options_t ft_options;
+} cairo_ft_scaled_font_t;
+
+static const cairo_scaled_font_backend_t _cairo_ft_scaled_font_backend;
+
+#if CAIRO_HAS_FC_FONT
+/* The load flags passed to FT_Load_Glyph control aspects like hinting and
+ * antialiasing. Here we compute them from the fields of a FcPattern.
+ */
+static void
+_get_pattern_ft_options (FcPattern *pattern, cairo_ft_options_t *ret)
+{
+    FcBool antialias, vertical_layout, hinting, autohint, bitmap, embolden;
+    cairo_ft_options_t ft_options;
+    int rgba;
+#ifdef FC_HINT_STYLE
+    int hintstyle;
+#endif
+    char *variations;
+
+    _cairo_font_options_init_default (&ft_options.base);
+    ft_options.load_flags = FT_LOAD_DEFAULT;
+    ft_options.synth_flags = 0;
+
+#ifndef FC_EMBEDDED_BITMAP
+#define FC_EMBEDDED_BITMAP "embeddedbitmap"
+#endif
+
+    /* Check whether to force use of embedded bitmaps */
+    if (FcPatternGetBool (pattern,
+			  FC_EMBEDDED_BITMAP, 0, &bitmap) != FcResultMatch)
+	bitmap = FcFalse;
+
+    /* disable antialiasing if requested */
+    if (FcPatternGetBool (pattern,
+			  FC_ANTIALIAS, 0, &antialias) != FcResultMatch)
+	antialias = FcTrue;
+    
+    if (antialias) {
+	cairo_subpixel_order_t subpixel_order;
+	int lcd_filter;
+
+	/* disable hinting if requested */
+	if (FcPatternGetBool (pattern,
+			      FC_HINTING, 0, &hinting) != FcResultMatch)
+	    hinting = FcTrue;
+
+	if (FcPatternGetInteger (pattern,
+				 FC_RGBA, 0, &rgba) != FcResultMatch)
+	    rgba = FC_RGBA_UNKNOWN;
+
+	switch (rgba) {
+	case FC_RGBA_RGB:
+	    subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
+	    break;
+	case FC_RGBA_BGR:
+	    subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
+	    break;
+	case FC_RGBA_VRGB:
+	    subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
+	    break;
+	case FC_RGBA_VBGR:
+	    subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
+	    break;
+	case FC_RGBA_UNKNOWN:
+	case FC_RGBA_NONE:
+	default:
+	    subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+	    break;
+	}
+
+	if (subpixel_order != CAIRO_SUBPIXEL_ORDER_DEFAULT) {
+	    ft_options.base.subpixel_order = subpixel_order;
+	    ft_options.base.antialias = CAIRO_ANTIALIAS_SUBPIXEL;
+	}
+
+	if (FcPatternGetInteger (pattern,
+				 FC_LCD_FILTER, 0, &lcd_filter) == FcResultMatch)
+	{
+	    switch (lcd_filter) {
+	    case FC_LCD_NONE:
+		ft_options.base.lcd_filter = CAIRO_LCD_FILTER_NONE;
+		break;
+	    case FC_LCD_DEFAULT:
+		ft_options.base.lcd_filter = CAIRO_LCD_FILTER_FIR5;
+		break;
+	    case FC_LCD_LIGHT:
+		ft_options.base.lcd_filter = CAIRO_LCD_FILTER_FIR3;
+		break;
+	    case FC_LCD_LEGACY:
+		ft_options.base.lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;
+		break;
+	    }
+	}
+
+#ifdef FC_HINT_STYLE
+	if (FcPatternGetInteger (pattern,
+				 FC_HINT_STYLE, 0, &hintstyle) != FcResultMatch)
+	    hintstyle = FC_HINT_FULL;
+
+	if (!hinting)
+	    hintstyle = FC_HINT_NONE;
+
+	switch (hintstyle) {
+	case FC_HINT_NONE:
+	    ft_options.base.hint_style = CAIRO_HINT_STYLE_NONE;
+	    break;
+	case FC_HINT_SLIGHT:
+	    ft_options.base.hint_style = CAIRO_HINT_STYLE_SLIGHT;
+	    break;
+	case FC_HINT_MEDIUM:
+	default:
+	    ft_options.base.hint_style = CAIRO_HINT_STYLE_MEDIUM;
+	    break;
+	case FC_HINT_FULL:
+	    ft_options.base.hint_style = CAIRO_HINT_STYLE_FULL;
+	    break;
+	}
+#else /* !FC_HINT_STYLE */
+	if (!hinting) {
+	    ft_options.base.hint_style = CAIRO_HINT_STYLE_NONE;
+	}
+#endif /* FC_HINT_STYLE */
+
+	/* Force embedded bitmaps off if no hinting requested */
+	if (ft_options.base.hint_style == CAIRO_HINT_STYLE_NONE)
+	  bitmap = FcFalse;
+
+	if (!bitmap)
+	    ft_options.load_flags |= FT_LOAD_NO_BITMAP;
+
+    } else {
+	ft_options.base.antialias = CAIRO_ANTIALIAS_NONE;
+    }
+
+    /* force autohinting if requested */
+    if (FcPatternGetBool (pattern,
+			  FC_AUTOHINT, 0, &autohint) != FcResultMatch)
+	autohint = FcFalse;
+
+    if (autohint)
+	ft_options.load_flags |= FT_LOAD_FORCE_AUTOHINT;
+
+    if (FcPatternGetBool (pattern,
+			  FC_VERTICAL_LAYOUT, 0, &vertical_layout) != FcResultMatch)
+	vertical_layout = FcFalse;
+
+    if (vertical_layout)
+	ft_options.load_flags |= FT_LOAD_VERTICAL_LAYOUT;
+
+#ifndef FC_EMBOLDEN
+#define FC_EMBOLDEN "embolden"
+#endif
+    if (FcPatternGetBool (pattern,
+			  FC_EMBOLDEN, 0, &embolden) != FcResultMatch)
+	embolden = FcFalse;
+
+    if (embolden)
+	ft_options.synth_flags |= CAIRO_FT_SYNTHESIZE_BOLD;
+
+#ifndef FC_FONT_VARIATIONS
+#define FC_FONT_VARIATIONS "fontvariations"
+#endif
+    if (FcPatternGetString (pattern, FC_FONT_VARIATIONS, 0, (FcChar8 **) &variations) == FcResultMatch) {
+      ft_options.base.variations = strdup (variations);
+    }
+
+    *ret = ft_options;
+}
+#endif
+
+static void
+_cairo_ft_options_merge (cairo_ft_options_t *options,
+			 cairo_ft_options_t *other)
+{
+    int load_flags = other->load_flags;
+    int load_target = FT_LOAD_TARGET_NORMAL;
+
+    /* clear load target mode */
+    load_flags &= ~(FT_LOAD_TARGET_(FT_LOAD_TARGET_MODE(other->load_flags)));
+
+    if (load_flags & FT_LOAD_NO_HINTING)
+	other->base.hint_style = CAIRO_HINT_STYLE_NONE;
+
+    if (other->base.antialias == CAIRO_ANTIALIAS_NONE ||
+	options->base.antialias == CAIRO_ANTIALIAS_NONE) {
+	options->base.antialias = CAIRO_ANTIALIAS_NONE;
+	options->base.subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+    }
+
+    if (other->base.antialias == CAIRO_ANTIALIAS_SUBPIXEL &&
+	(options->base.antialias == CAIRO_ANTIALIAS_DEFAULT ||
+	 options->base.antialias == CAIRO_ANTIALIAS_GRAY)) {
+	options->base.antialias = CAIRO_ANTIALIAS_SUBPIXEL;
+	options->base.subpixel_order = other->base.subpixel_order;
+    }
+
+    if (options->base.hint_style == CAIRO_HINT_STYLE_DEFAULT)
+	options->base.hint_style = other->base.hint_style;
+
+    if (other->base.hint_style == CAIRO_HINT_STYLE_NONE)
+	options->base.hint_style = CAIRO_HINT_STYLE_NONE;
+
+    if (options->base.lcd_filter == CAIRO_LCD_FILTER_DEFAULT)
+	options->base.lcd_filter = other->base.lcd_filter;
+
+    if (other->base.lcd_filter == CAIRO_LCD_FILTER_NONE)
+	options->base.lcd_filter = CAIRO_LCD_FILTER_NONE;
+
+    if (options->base.antialias == CAIRO_ANTIALIAS_NONE) {
+	if (options->base.hint_style == CAIRO_HINT_STYLE_NONE)
+	    load_flags |= FT_LOAD_NO_HINTING;
+	else
+	    load_target = FT_LOAD_TARGET_MONO;
+	load_flags |= FT_LOAD_MONOCHROME;
+    } else {
+	switch (options->base.hint_style) {
+	case CAIRO_HINT_STYLE_NONE:
+	    load_flags |= FT_LOAD_NO_HINTING;
+	    break;
+	case CAIRO_HINT_STYLE_SLIGHT:
+	    load_target = FT_LOAD_TARGET_LIGHT;
+	    break;
+	case CAIRO_HINT_STYLE_MEDIUM:
+	    break;
+	case CAIRO_HINT_STYLE_FULL:
+	case CAIRO_HINT_STYLE_DEFAULT:
+	    if (options->base.antialias == CAIRO_ANTIALIAS_SUBPIXEL) {
+		switch (options->base.subpixel_order) {
+		case CAIRO_SUBPIXEL_ORDER_DEFAULT:
+		case CAIRO_SUBPIXEL_ORDER_RGB:
+		case CAIRO_SUBPIXEL_ORDER_BGR:
+		    load_target = FT_LOAD_TARGET_LCD;
+		    break;
+		case CAIRO_SUBPIXEL_ORDER_VRGB:
+		case CAIRO_SUBPIXEL_ORDER_VBGR:
+		    load_target = FT_LOAD_TARGET_LCD_V;
+		break;
+		}
+	    }
+	    break;
+	}
+    }
+
+    if (other->base.variations) {
+      if (options->base.variations) {
+        char *p;
+
+        /* 'merge' variations by concatenating - later entries win */
+        p = malloc (strlen (other->base.variations) + strlen (options->base.variations) + 2);
+        p[0] = 0;
+        strcat (p, other->base.variations);
+        strcat (p, ",");
+        strcat (p, options->base.variations);
+        free (options->base.variations);
+        options->base.variations = p;
+      }
+      else {
+        options->base.variations = strdup (other->base.variations);
+      }
+    }
+
+    options->load_flags = load_flags | load_target;
+    options->synth_flags = other->synth_flags;
+}
+
+static cairo_status_t
+_cairo_ft_font_face_scaled_font_create (void		    *abstract_font_face,
+					const cairo_matrix_t	 *font_matrix,
+					const cairo_matrix_t	 *ctm,
+					const cairo_font_options_t *options,
+					cairo_scaled_font_t       **font_out)
+{
+    cairo_ft_font_face_t *font_face = abstract_font_face;
+    cairo_ft_scaled_font_t *scaled_font;
+    FT_Face face;
+    FT_Size_Metrics *metrics;
+    cairo_font_extents_t fs_metrics;
+    cairo_status_t status;
+    cairo_ft_unscaled_font_t *unscaled;
+
+    assert (font_face->unscaled);
+
+    face = _cairo_ft_unscaled_font_lock_face (font_face->unscaled);
+    if (unlikely (face == NULL)) /* backend error */
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    scaled_font = _cairo_malloc (sizeof (cairo_ft_scaled_font_t));
+    if (unlikely (scaled_font == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL;
+    }
+
+    scaled_font->unscaled = unscaled = font_face->unscaled;
+    _cairo_unscaled_font_reference (&unscaled->base);
+
+    _cairo_font_options_init_copy (&scaled_font->ft_options.base, options);
+    _cairo_ft_options_merge (&scaled_font->ft_options, &font_face->ft_options);
+
+    status = _cairo_scaled_font_init (&scaled_font->base,
+			              &font_face->base,
+				      font_matrix, ctm, options,
+				      &_cairo_ft_scaled_font_backend);
+    if (unlikely (status))
+	goto CLEANUP_SCALED_FONT;
+
+    status = _cairo_ft_unscaled_font_set_scale (unscaled,
+				                &scaled_font->base.scale);
+    if (unlikely (status)) {
+	/* This can only fail if we encounter an error with the underlying
+	 * font, so propagate the error back to the font-face. */
+	_cairo_ft_unscaled_font_unlock_face (unscaled);
+	_cairo_unscaled_font_destroy (&unscaled->base);
+	free (scaled_font);
+	return status;
+    }
+
+
+    metrics = &face->size->metrics;
+
+    /*
+     * Get to unscaled metrics so that the upper level can get back to
+     * user space
+     *
+     * Also use this path for bitmap-only fonts.  The other branch uses
+     * face members that are only relevant for scalable fonts.  This is
+     * detected by simply checking for units_per_EM==0.
+     */
+    if (scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF ||
+	face->units_per_EM == 0) {
+	double x_factor, y_factor;
+
+	if (unscaled->x_scale == 0)
+	    x_factor = 0;
+	else
+	    x_factor = 1 / unscaled->x_scale;
+
+	if (unscaled->y_scale == 0)
+	    y_factor = 0;
+	else
+	    y_factor = 1 / unscaled->y_scale;
+
+	fs_metrics.ascent =        DOUBLE_FROM_26_6(metrics->ascender) * y_factor;
+	fs_metrics.descent =       DOUBLE_FROM_26_6(- metrics->descender) * y_factor;
+	fs_metrics.height =        DOUBLE_FROM_26_6(metrics->height) * y_factor;
+	if (!_cairo_ft_scaled_font_is_vertical (&scaled_font->base)) {
+	    fs_metrics.max_x_advance = DOUBLE_FROM_26_6(metrics->max_advance) * x_factor;
+	    fs_metrics.max_y_advance = 0;
+	} else {
+	    fs_metrics.max_x_advance = 0;
+	    fs_metrics.max_y_advance = DOUBLE_FROM_26_6(metrics->max_advance) * y_factor;
+	}
+    } else {
+	double scale = face->units_per_EM;
+
+	fs_metrics.ascent =        face->ascender / scale;
+	fs_metrics.descent =       - face->descender / scale;
+	fs_metrics.height =        face->height / scale;
+	if (!_cairo_ft_scaled_font_is_vertical (&scaled_font->base)) {
+	    fs_metrics.max_x_advance = face->max_advance_width / scale;
+	    fs_metrics.max_y_advance = 0;
+	} else {
+	    fs_metrics.max_x_advance = 0;
+	    fs_metrics.max_y_advance = face->max_advance_height / scale;
+	}
+    }
+
+    status = _cairo_scaled_font_set_metrics (&scaled_font->base, &fs_metrics);
+    if (unlikely (status))
+	goto CLEANUP_SCALED_FONT;
+
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+
+    *font_out = &scaled_font->base;
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_SCALED_FONT:
+    _cairo_unscaled_font_destroy (&unscaled->base);
+    free (scaled_font);
+  FAIL:
+    _cairo_ft_unscaled_font_unlock_face (font_face->unscaled);
+    *font_out = _cairo_scaled_font_create_in_error (status);
+    return CAIRO_STATUS_SUCCESS; /* non-backend error */
+}
+
+cairo_bool_t
+_cairo_scaled_font_is_ft (cairo_scaled_font_t *scaled_font)
+{
+    return scaled_font->backend == &_cairo_ft_scaled_font_backend;
+}
+
+static void
+_cairo_ft_scaled_font_fini (void *abstract_font)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+
+    if (scaled_font == NULL)
+        return;
+
+    _cairo_unscaled_font_destroy (&scaled_font->unscaled->base);
+}
+
+static int
+_move_to (FT_Vector *to, void *closure)
+{
+    cairo_path_fixed_t *path = closure;
+    cairo_fixed_t x, y;
+
+    x = _cairo_fixed_from_26_6 (to->x);
+    y = _cairo_fixed_from_26_6 (to->y);
+
+    if (_cairo_path_fixed_close_path (path) != CAIRO_STATUS_SUCCESS)
+	return 1;
+    if (_cairo_path_fixed_move_to (path, x, y) != CAIRO_STATUS_SUCCESS)
+	return 1;
+
+    return 0;
+}
+
+static int
+_line_to (FT_Vector *to, void *closure)
+{
+    cairo_path_fixed_t *path = closure;
+    cairo_fixed_t x, y;
+
+    x = _cairo_fixed_from_26_6 (to->x);
+    y = _cairo_fixed_from_26_6 (to->y);
+
+    if (_cairo_path_fixed_line_to (path, x, y) != CAIRO_STATUS_SUCCESS)
+	return 1;
+
+    return 0;
+}
+
+static int
+_conic_to (FT_Vector *control, FT_Vector *to, void *closure)
+{
+    cairo_path_fixed_t *path = closure;
+
+    cairo_fixed_t x0, y0;
+    cairo_fixed_t x1, y1;
+    cairo_fixed_t x2, y2;
+    cairo_fixed_t x3, y3;
+    cairo_point_t conic;
+
+    if (! _cairo_path_fixed_get_current_point (path, &x0, &y0))
+	return 1;
+
+    conic.x = _cairo_fixed_from_26_6 (control->x);
+    conic.y = _cairo_fixed_from_26_6 (control->y);
+
+    x3 = _cairo_fixed_from_26_6 (to->x);
+    y3 = _cairo_fixed_from_26_6 (to->y);
+
+    x1 = x0 + 2.0/3.0 * (conic.x - x0);
+    y1 = y0 + 2.0/3.0 * (conic.y - y0);
+
+    x2 = x3 + 2.0/3.0 * (conic.x - x3);
+    y2 = y3 + 2.0/3.0 * (conic.y - y3);
+
+    if (_cairo_path_fixed_curve_to (path,
+				    x1, y1,
+				    x2, y2,
+				    x3, y3) != CAIRO_STATUS_SUCCESS)
+	return 1;
+
+    return 0;
+}
+
+static int
+_cubic_to (FT_Vector *control1, FT_Vector *control2,
+	   FT_Vector *to, void *closure)
+{
+    cairo_path_fixed_t *path = closure;
+    cairo_fixed_t x0, y0;
+    cairo_fixed_t x1, y1;
+    cairo_fixed_t x2, y2;
+
+    x0 = _cairo_fixed_from_26_6 (control1->x);
+    y0 = _cairo_fixed_from_26_6 (control1->y);
+
+    x1 = _cairo_fixed_from_26_6 (control2->x);
+    y1 = _cairo_fixed_from_26_6 (control2->y);
+
+    x2 = _cairo_fixed_from_26_6 (to->x);
+    y2 = _cairo_fixed_from_26_6 (to->y);
+
+    if (_cairo_path_fixed_curve_to (path,
+				    x0, y0,
+				    x1, y1,
+				    x2, y2) != CAIRO_STATUS_SUCCESS)
+	return 1;
+
+    return 0;
+}
+
+static cairo_status_t
+_decompose_glyph_outline (FT_Face		  face,
+			  cairo_font_options_t	 *options,
+			  cairo_path_fixed_t	**pathp)
+{
+    static const FT_Outline_Funcs outline_funcs = {
+	(FT_Outline_MoveToFunc)_move_to,
+	(FT_Outline_LineToFunc)_line_to,
+	(FT_Outline_ConicToFunc)_conic_to,
+	(FT_Outline_CubicToFunc)_cubic_to,
+	0, /* shift */
+	0, /* delta */
+    };
+    static const FT_Matrix invert_y = {
+	DOUBLE_TO_16_16 (1.0), 0,
+	0, DOUBLE_TO_16_16 (-1.0),
+    };
+
+    FT_GlyphSlot glyph;
+    cairo_path_fixed_t *path;
+    cairo_status_t status;
+
+    path = _cairo_path_fixed_create ();
+    if (!path)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    glyph = face->glyph;
+
+    /* Font glyphs have an inverted Y axis compared to cairo. */
+    FT_Outline_Transform (&glyph->outline, &invert_y);
+    if (FT_Outline_Decompose (&glyph->outline, &outline_funcs, path)) {
+	_cairo_path_fixed_destroy (path);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    status = _cairo_path_fixed_close_path (path);
+    if (unlikely (status)) {
+	_cairo_path_fixed_destroy (path);
+	return status;
+    }
+
+    *pathp = path;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Translate glyph to match its metrics.
+ */
+static void
+_cairo_ft_scaled_glyph_vertical_layout_bearing_fix (void        *abstract_font,
+						    FT_GlyphSlot glyph)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    FT_Vector vector;
+
+    vector.x = glyph->metrics.vertBearingX - glyph->metrics.horiBearingX;
+    vector.y = -glyph->metrics.vertBearingY - glyph->metrics.horiBearingY;
+
+    if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {
+	FT_Vector_Transform (&vector, &scaled_font->unscaled->Current_Shape);
+	FT_Outline_Translate(&glyph->outline, vector.x, vector.y);
+    } else if (glyph->format == FT_GLYPH_FORMAT_BITMAP) {
+	glyph->bitmap_left += vector.x / 64;
+	glyph->bitmap_top  += vector.y / 64;
+    }
+}
+
+static void
+cairo_ft_apply_variations (FT_Face                 face,
+			   cairo_ft_scaled_font_t *scaled_font)
+{
+    FT_MM_Var *ft_mm_var;
+    FT_Error ret;
+    unsigned int instance_id = scaled_font->unscaled->id >> 16;
+
+    ret = FT_Get_MM_Var (face, &ft_mm_var);
+    if (ret == 0) {
+        FT_Fixed *current_coords;
+        FT_Fixed *coords;
+        unsigned int i;
+        const char *p;
+
+        coords = malloc (sizeof (FT_Fixed) * ft_mm_var->num_axis);
+	/* FIXME check coords. */
+
+	if (scaled_font->unscaled->variations)
+	{
+	    memcpy (coords, scaled_font->unscaled->variations, ft_mm_var->num_axis * sizeof (*coords));
+	}
+	else if (instance_id && instance_id <= ft_mm_var->num_namedstyles)
+	{
+	    FT_Var_Named_Style *instance = &ft_mm_var->namedstyle[instance_id - 1];
+	    memcpy (coords, instance->coords, ft_mm_var->num_axis * sizeof (*coords));
+	}
+	else
+	    for (i = 0; i < ft_mm_var->num_axis; i++)
+		coords[i] = ft_mm_var->axis[i].def;
+
+        p = scaled_font->ft_options.base.variations;
+        while (p && *p) {
+            const char *start;
+            const char *end, *end2;
+            FT_ULong tag;
+            double value;
+
+            while (_cairo_isspace (*p)) p++;
+
+            start = p;
+            end = strchr (p, ',');
+            if (end && (end - p < 6))
+                goto skip;
+
+            tag = FT_MAKE_TAG(p[0], p[1], p[2], p[3]);
+
+            p += 4;
+            while (_cairo_isspace (*p)) p++;
+            if (*p == '=') p++;
+
+            if (p - start < 5)
+                goto skip;
+
+            value = _cairo_strtod (p, (char **) &end2);
+
+            while (end2 && _cairo_isspace (*end2)) end2++;
+
+            if (end2 && (*end2 != ',' && *end2 != '\0'))
+                goto skip;
+
+            for (i = 0; i < ft_mm_var->num_axis; i++) {
+                if (ft_mm_var->axis[i].tag == tag) {
+                    coords[i] = (FT_Fixed)(value*65536);
+                    break;
+                }
+            }
+
+skip:
+            p = end ? end + 1 : NULL;
+        }
+
+        current_coords = malloc (sizeof (FT_Fixed) * ft_mm_var->num_axis);
+#ifdef HAVE_FT_GET_VAR_DESIGN_COORDINATES
+        ret = FT_Get_Var_Design_Coordinates (face, ft_mm_var->num_axis, current_coords);
+        if (ret == 0) {
+            for (i = 0; i < ft_mm_var->num_axis; i++) {
+              if (coords[i] != current_coords[i])
+                break;
+            }
+            if (i == ft_mm_var->num_axis)
+              goto done;
+        }
+#endif
+
+        FT_Set_Var_Design_Coordinates (face, ft_mm_var->num_axis, coords);
+done:
+        free (coords);
+        free (current_coords);
+        free (ft_mm_var);
+    }
+}
+
+static cairo_int_status_t
+_cairo_ft_scaled_glyph_load_glyph (cairo_ft_scaled_font_t *scaled_font,
+				   cairo_scaled_glyph_t   *scaled_glyph,
+				   FT_Face                 face,
+				   int                     load_flags,
+				   cairo_bool_t            use_em_size,
+				   cairo_bool_t            vertical_layout)
+{
+    FT_Error error;
+    cairo_status_t status;
+
+    if (use_em_size) {
+	cairo_matrix_t em_size;
+	cairo_matrix_init_scale (&em_size, face->units_per_EM, face->units_per_EM);
+	status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled, &em_size);
+    } else {
+	status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled,
+						    &scaled_font->base.scale);
+    }
+    if (unlikely (status))
+	return status;
+
+    cairo_ft_apply_variations (face, scaled_font);
+
+    error = FT_Load_Glyph (face,
+			   _cairo_scaled_glyph_index(scaled_glyph),
+			   load_flags);
+    /* XXX ignoring all other errors for now.  They are not fatal, typically
+     * just a glyph-not-found. */
+    if (error == FT_Err_Out_Of_Memory)
+	return  _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /*
+     * synthesize glyphs if requested
+     */
+#if HAVE_FT_GLYPHSLOT_EMBOLDEN
+    if (scaled_font->ft_options.synth_flags & CAIRO_FT_SYNTHESIZE_BOLD)
+	FT_GlyphSlot_Embolden (face->glyph);
+#endif
+
+#if HAVE_FT_GLYPHSLOT_OBLIQUE
+    if (scaled_font->ft_options.synth_flags & CAIRO_FT_SYNTHESIZE_OBLIQUE)
+	FT_GlyphSlot_Oblique (face->glyph);
+#endif
+
+    if (vertical_layout)
+	_cairo_ft_scaled_glyph_vertical_layout_bearing_fix (scaled_font, face->glyph);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ft_scaled_glyph_init (void			*abstract_font,
+			     cairo_scaled_glyph_t	*scaled_glyph,
+			     cairo_scaled_glyph_info_t	 info)
+{
+    cairo_text_extents_t    fs_metrics;
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_GlyphSlot glyph;
+    FT_Face face;
+    int load_flags = scaled_font->ft_options.load_flags;
+    FT_Glyph_Metrics *metrics;
+    double x_factor, y_factor;
+    cairo_bool_t vertical_layout = FALSE;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_bool_t scaled_glyph_loaded = FALSE;
+
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* Ignore global advance unconditionally */
+    load_flags |= FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH;
+
+    if ((info & CAIRO_SCALED_GLYPH_INFO_PATH) != 0 &&
+	(info & (CAIRO_SCALED_GLYPH_INFO_SURFACE |
+                 CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) == 0) {
+	load_flags |= FT_LOAD_NO_BITMAP;
+    }
+
+    /*
+     * Don't pass FT_LOAD_VERTICAL_LAYOUT to FT_Load_Glyph here as
+     * suggested by freetype people.
+     */
+    if (load_flags & FT_LOAD_VERTICAL_LAYOUT) {
+	load_flags &= ~FT_LOAD_VERTICAL_LAYOUT;
+	vertical_layout = TRUE;
+    }
+
+    load_flags |= FT_LOAD_COLOR;
+
+
+    if (info & CAIRO_SCALED_GLYPH_INFO_METRICS) {
+
+	cairo_bool_t hint_metrics = scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF;
+
+	status = _cairo_ft_scaled_glyph_load_glyph (scaled_font,
+						    scaled_glyph,
+						    face,
+						    load_flags,
+						    !hint_metrics,
+						    vertical_layout);
+	if (unlikely (status))
+	    goto FAIL;
+
+	glyph = face->glyph;
+	scaled_glyph_loaded = hint_metrics;
+
+	/*
+	 * Compute font-space metrics
+	 */
+	metrics = &glyph->metrics;
+
+	if (unscaled->x_scale == 0)
+	    x_factor = 0;
+	else
+	    x_factor = 1 / unscaled->x_scale;
+
+	if (unscaled->y_scale == 0)
+	    y_factor = 0;
+	else
+	    y_factor = 1 / unscaled->y_scale;
+
+	/*
+	 * Note: Y coordinates of the horizontal bearing need to be negated.
+	 *
+	 * Scale metrics back to glyph space from the scaled glyph space returned
+	 * by FreeType
+	 *
+	 * If we want hinted metrics but aren't asking for hinted glyphs from
+	 * FreeType, then we need to do the metric hinting ourselves.
+	 */
+
+	if (hint_metrics && (load_flags & FT_LOAD_NO_HINTING))
+	{
+	    FT_Pos x1, x2;
+	    FT_Pos y1, y2;
+	    FT_Pos advance;
+
+	    if (!vertical_layout) {
+		x1 = (metrics->horiBearingX) & -64;
+		x2 = (metrics->horiBearingX + metrics->width + 63) & -64;
+		y1 = (-metrics->horiBearingY) & -64;
+		y2 = (-metrics->horiBearingY + metrics->height + 63) & -64;
+
+		advance = ((metrics->horiAdvance + 32) & -64);
+
+		fs_metrics.x_bearing = DOUBLE_FROM_26_6 (x1) * x_factor;
+		fs_metrics.y_bearing = DOUBLE_FROM_26_6 (y1) * y_factor;
+
+		fs_metrics.width  = DOUBLE_FROM_26_6 (x2 - x1) * x_factor;
+		fs_metrics.height  = DOUBLE_FROM_26_6 (y2 - y1) * y_factor;
+
+		fs_metrics.x_advance = DOUBLE_FROM_26_6 (advance) * x_factor;
+		fs_metrics.y_advance = 0;
+	    } else {
+		x1 = (metrics->vertBearingX) & -64;
+		x2 = (metrics->vertBearingX + metrics->width + 63) & -64;
+		y1 = (metrics->vertBearingY) & -64;
+		y2 = (metrics->vertBearingY + metrics->height + 63) & -64;
+
+		advance = ((metrics->vertAdvance + 32) & -64);
+
+		fs_metrics.x_bearing = DOUBLE_FROM_26_6 (x1) * x_factor;
+		fs_metrics.y_bearing = DOUBLE_FROM_26_6 (y1) * y_factor;
+
+		fs_metrics.width  = DOUBLE_FROM_26_6 (x2 - x1) * x_factor;
+		fs_metrics.height  = DOUBLE_FROM_26_6 (y2 - y1) * y_factor;
+
+		fs_metrics.x_advance = 0;
+		fs_metrics.y_advance = DOUBLE_FROM_26_6 (advance) * y_factor;
+	    }
+	 } else {
+	    fs_metrics.width  = DOUBLE_FROM_26_6 (metrics->width) * x_factor;
+	    fs_metrics.height = DOUBLE_FROM_26_6 (metrics->height) * y_factor;
+
+	    if (!vertical_layout) {
+		fs_metrics.x_bearing = DOUBLE_FROM_26_6 (metrics->horiBearingX) * x_factor;
+		fs_metrics.y_bearing = DOUBLE_FROM_26_6 (-metrics->horiBearingY) * y_factor;
+
+		if (hint_metrics || glyph->format != FT_GLYPH_FORMAT_OUTLINE)
+		    fs_metrics.x_advance = DOUBLE_FROM_26_6 (metrics->horiAdvance) * x_factor;
+		else
+		    fs_metrics.x_advance = DOUBLE_FROM_16_16 (glyph->linearHoriAdvance) * x_factor;
+		fs_metrics.y_advance = 0 * y_factor;
+	    } else {
+		fs_metrics.x_bearing = DOUBLE_FROM_26_6 (metrics->vertBearingX) * x_factor;
+		fs_metrics.y_bearing = DOUBLE_FROM_26_6 (metrics->vertBearingY) * y_factor;
+
+		fs_metrics.x_advance = 0 * x_factor;
+		if (hint_metrics || glyph->format != FT_GLYPH_FORMAT_OUTLINE)
+		    fs_metrics.y_advance = DOUBLE_FROM_26_6 (metrics->vertAdvance) * y_factor;
+		else
+		    fs_metrics.y_advance = DOUBLE_FROM_16_16 (glyph->linearVertAdvance) * y_factor;
+	    }
+	 }
+
+	_cairo_scaled_glyph_set_metrics (scaled_glyph,
+					 &scaled_font->base,
+					 &fs_metrics);
+    }
+
+LOAD:
+    if (info & (CAIRO_SCALED_GLYPH_INFO_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) {
+	cairo_image_surface_t	*surface;
+
+	if (!scaled_glyph_loaded) {
+	    status = _cairo_ft_scaled_glyph_load_glyph (scaled_font,
+							scaled_glyph,
+							face,
+							load_flags,
+							FALSE,
+							vertical_layout);
+	    if (unlikely (status))
+		goto FAIL;
+
+	    glyph = face->glyph;
+	    scaled_glyph_loaded = TRUE;
+	}
+
+	if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {
+	    status = _render_glyph_outline (face, &scaled_font->ft_options.base,
+					    &surface);
+	} else {
+	    status = _render_glyph_bitmap (face, &scaled_font->ft_options.base,
+					   &surface);
+	    if (likely (status == CAIRO_STATUS_SUCCESS) &&
+		unscaled->have_shape)
+	    {
+		status = _transform_glyph_bitmap (&unscaled->current_shape,
+						  &surface);
+                if (unlikely (status))
+                    cairo_surface_destroy (&surface->base);
+            }
+	}
+	if (unlikely (status))
+	    goto FAIL;
+
+        if (pixman_image_get_format (surface->pixman_image) == PIXMAN_a8r8g8b8 &&
+            !pixman_image_get_component_alpha (surface->pixman_image)) {
+            _cairo_scaled_glyph_set_color_surface (scaled_glyph,
+                                                   &scaled_font->base,
+                                                   surface);
+        } else {
+            _cairo_scaled_glyph_set_surface (scaled_glyph,
+                                             &scaled_font->base,
+                                             surface);
+        }
+    }
+
+    if (((info & (CAIRO_SCALED_GLYPH_INFO_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) != 0) &&
+        ((scaled_glyph->has_info & CAIRO_SCALED_GLYPH_INFO_SURFACE) == 0)) {
+        /*
+         * A kludge -- load again, without color.
+         * No need to load the metrics again, though
+         */
+	scaled_glyph_loaded = FALSE;
+        info &= ~CAIRO_SCALED_GLYPH_INFO_METRICS;
+        load_flags &= ~FT_LOAD_COLOR;
+        goto LOAD;
+    }
+
+    if (info & CAIRO_SCALED_GLYPH_INFO_PATH) {
+	cairo_path_fixed_t *path = NULL; /* hide compiler warning */
+
+	/*
+	 * A kludge -- the above code will trash the outline,
+	 * so reload it. This will probably never occur though
+	 */
+	if ((info & (CAIRO_SCALED_GLYPH_INFO_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) != 0) {
+	    scaled_glyph_loaded = FALSE;
+	    load_flags |= FT_LOAD_NO_BITMAP;
+	}
+
+	if (!scaled_glyph_loaded) {
+	    status = _cairo_ft_scaled_glyph_load_glyph (scaled_font,
+							scaled_glyph,
+							face,
+							load_flags,
+							FALSE,
+							vertical_layout);
+	    if (unlikely (status))
+		goto FAIL;
+
+	    glyph = face->glyph;
+	}
+
+	if (glyph->format == FT_GLYPH_FORMAT_OUTLINE)
+	    status = _decompose_glyph_outline (face, &scaled_font->ft_options.base,
+					       &path);
+	else
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+	if (unlikely (status))
+	    goto FAIL;
+
+	_cairo_scaled_glyph_set_path (scaled_glyph,
+				      &scaled_font->base,
+				      path);
+    }
+ FAIL:
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+
+    return status;
+}
+
+static unsigned long
+_cairo_ft_ucs4_to_index (void	    *abstract_font,
+			 uint32_t    ucs4)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_Face face;
+    FT_UInt index;
+
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return 0;
+
+#if CAIRO_HAS_FC_FONT
+    index = FcFreeTypeCharIndex (face, ucs4);
+#else
+    index = FT_Get_Char_Index (face, ucs4);
+#endif
+
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+    return index;
+}
+
+static cairo_int_status_t
+_cairo_ft_load_truetype_table (void	       *abstract_font,
+                              unsigned long     tag,
+                              long              offset,
+                              unsigned char    *buffer,
+                              unsigned long    *length)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_Face face;
+    cairo_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* We don't support the FreeType feature of loading a table
+     * without specifying the size since this may overflow our
+     * buffer. */
+    assert (length != NULL);
+
+    if (_cairo_ft_scaled_font_is_vertical (&scaled_font->base))
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+
+#if HAVE_FT_LOAD_SFNT_TABLE
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (FT_IS_SFNT (face)) {
+	if (buffer == NULL)
+	    *length = 0;
+
+	if (FT_Load_Sfnt_Table (face, tag, offset, buffer, length) == 0)
+	    status = CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+#endif
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ft_index_to_ucs4(void	        *abstract_font,
+			unsigned long    index,
+			uint32_t	*ucs4)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_Face face;
+    FT_ULong  charcode;
+    FT_UInt   gindex;
+
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    *ucs4 = (uint32_t) -1;
+    charcode = FT_Get_First_Char(face, &gindex);
+    while (gindex != 0) {
+	if (gindex == index) {
+	    *ucs4 = charcode;
+	    break;
+	}
+	charcode = FT_Get_Next_Char (face, charcode, &gindex);
+    }
+
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ft_is_synthetic (void	        *abstract_font,
+			cairo_bool_t    *is_synthetic)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_Face face;
+    FT_Error error;
+
+    if (scaled_font->ft_options.synth_flags != 0) {
+	*is_synthetic = TRUE;
+	return status;
+    }
+
+    *is_synthetic = FALSE;
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS) {
+	FT_MM_Var *mm_var = NULL;
+	FT_Fixed *coords = NULL;
+	int num_axis;
+
+	/* If this is an MM or variable font we can't assume the current outlines
+	 * are the same as the font tables */
+	*is_synthetic = TRUE;
+
+	error = FT_Get_MM_Var (face, &mm_var);
+	if (error) {
+	    status = _cairo_error (_ft_to_cairo_error (error));
+	    goto cleanup;
+	}
+
+	num_axis = mm_var->num_axis;
+	coords = _cairo_malloc_ab (num_axis, sizeof(FT_Fixed));
+	if (!coords) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto cleanup;
+	}
+
+#if FREETYPE_MAJOR > 2 || ( FREETYPE_MAJOR == 2 &&  FREETYPE_MINOR >= 8)
+	/* If FT_Get_Var_Blend_Coordinates() is available, we can check if the
+	 * current design coordinates are the default coordinates. In this case
+	 * the current outlines match the font tables.
+	 */
+	{
+	    int i;
+
+	    FT_Get_Var_Blend_Coordinates (face, num_axis, coords);
+	    *is_synthetic = FALSE;
+	    for (i = 0; i < num_axis; i++) {
+		if (coords[i]) {
+		    *is_synthetic = TRUE;
+		    break;
+		}
+	    }
+	}
+#endif
+
+      cleanup:
+	free (coords);
+#if HAVE_FT_DONE_MM_VAR
+	FT_Done_MM_Var (face->glyph->library, mm_var);
+#else
+	free (mm_var);
+#endif
+    }
+
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_index_to_glyph_name (void	         *abstract_font,
+			    char                **glyph_names,
+			    int                   num_glyph_names,
+			    unsigned long         glyph_index,
+			    unsigned long        *glyph_array_index)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_Face face;
+    char buffer[256]; /* PLRM spcifies max name length of 127 */
+    FT_Error error;
+    int i;
+
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    error = FT_Get_Glyph_Name (face, glyph_index, buffer, sizeof buffer);
+
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+
+    if (error != FT_Err_Ok) {
+	/* propagate fatal errors from FreeType */
+	if (error == FT_Err_Out_Of_Memory)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* FT first numbers the glyphs in the order they are read from the
+     * Type 1 font. Then if .notdef is not the first glyph, the first
+     * glyph is swapped with .notdef to ensure that .notdef is at
+     * glyph index 0.
+     *
+     * As all but two glyphs in glyph_names already have the same
+     * index as the FT glyph index, we first check if
+     * glyph_names[glyph_index] is the name we are looking for. If not
+     * we fall back to searching the entire array.
+     */
+
+    if ((long)glyph_index < num_glyph_names &&
+	strcmp (glyph_names[glyph_index], buffer) == 0)
+    {
+	*glyph_array_index = glyph_index;
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    for (i = 0; i < num_glyph_names; i++) {
+	if (strcmp (glyph_names[i], buffer) == 0) {
+	    *glyph_array_index = i;
+
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_bool_t
+_ft_is_type1 (FT_Face face)
+{
+#if HAVE_FT_GET_X11_FONT_FORMAT
+    const char *font_format = FT_Get_X11_Font_Format (face);
+    if (font_format &&
+	(strcmp (font_format, "Type 1") == 0 ||
+	 strcmp (font_format, "CFF") == 0))
+    {
+	return TRUE;
+    }
+#endif
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+_cairo_ft_load_type1_data (void	            *abstract_font,
+			   long              offset,
+			   unsigned char    *buffer,
+			   unsigned long    *length)
+{
+    cairo_ft_scaled_font_t *scaled_font = abstract_font;
+    cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
+    FT_Face face;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    unsigned long available_length;
+    unsigned long ret;
+
+    assert (length != NULL);
+
+    if (_cairo_ft_scaled_font_is_vertical (&scaled_font->base))
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    face = _cairo_ft_unscaled_font_lock_face (unscaled);
+    if (!face)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+#if HAVE_FT_LOAD_SFNT_TABLE
+    if (FT_IS_SFNT (face)) {
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	goto unlock;
+    }
+#endif
+
+    if (! _ft_is_type1 (face)) {
+        status = CAIRO_INT_STATUS_UNSUPPORTED;
+	goto unlock;
+    }
+
+    available_length = MAX (face->stream->size - offset, 0);
+    if (!buffer) {
+	*length = available_length;
+    } else {
+	if (*length > available_length) {
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	} else if (face->stream->read != NULL) {
+	    /* Note that read() may be implemented as a macro, thanks POSIX!, so we
+	     * need to wrap the following usage in parentheses in order to
+	     * disambiguate it for the pre-processor - using the verbose function
+	     * pointer dereference for clarity.
+	     */
+	    ret = (* face->stream->read) (face->stream,
+					  offset,
+					  buffer,
+					  *length);
+	    if (ret != *length)
+		status = _cairo_error (CAIRO_STATUS_READ_ERROR);
+	} else {
+	    memcpy (buffer, face->stream->base + offset, *length);
+	}
+    }
+
+  unlock:
+    _cairo_ft_unscaled_font_unlock_face (unscaled);
+
+    return status;
+}
+
+static cairo_bool_t
+_cairo_ft_has_color_glyphs (void *scaled)
+{
+    cairo_ft_unscaled_font_t *unscaled = ((cairo_ft_scaled_font_t *)scaled)->unscaled;
+
+    if (!unscaled->have_color_set) {
+	FT_Face face;
+	face = _cairo_ft_unscaled_font_lock_face (unscaled);
+	if (unlikely (face == NULL))
+	    return FALSE;
+	_cairo_ft_unscaled_font_unlock_face (unscaled);
+    }
+
+    return unscaled->have_color;
+}
+
+static const cairo_scaled_font_backend_t _cairo_ft_scaled_font_backend = {
+    CAIRO_FONT_TYPE_FT,
+    _cairo_ft_scaled_font_fini,
+    _cairo_ft_scaled_glyph_init,
+    NULL,			/* text_to_glyphs */
+    _cairo_ft_ucs4_to_index,
+    _cairo_ft_load_truetype_table,
+    _cairo_ft_index_to_ucs4,
+    _cairo_ft_is_synthetic,
+    _cairo_index_to_glyph_name,
+    _cairo_ft_load_type1_data,
+    _cairo_ft_has_color_glyphs
+};
+
+/* #cairo_ft_font_face_t */
+
+#if CAIRO_HAS_FC_FONT
+static cairo_font_face_t *
+_cairo_ft_font_face_create_for_pattern (FcPattern *pattern);
+
+static cairo_status_t
+_cairo_ft_font_face_create_for_toy (cairo_toy_font_face_t *toy_face,
+				    cairo_font_face_t **font_face_out)
+{
+    cairo_font_face_t *font_face = (cairo_font_face_t *) &_cairo_font_face_nil;
+    FcPattern *pattern;
+    int fcslant;
+    int fcweight;
+
+    pattern = FcPatternCreate ();
+    if (!pattern) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return font_face->status;
+    }
+
+    if (!FcPatternAddString (pattern,
+		             FC_FAMILY, (unsigned char *) toy_face->family))
+    {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	goto FREE_PATTERN;
+    }
+
+    switch (toy_face->slant)
+    {
+    case CAIRO_FONT_SLANT_ITALIC:
+        fcslant = FC_SLANT_ITALIC;
+        break;
+    case CAIRO_FONT_SLANT_OBLIQUE:
+	fcslant = FC_SLANT_OBLIQUE;
+        break;
+    case CAIRO_FONT_SLANT_NORMAL:
+    default:
+        fcslant = FC_SLANT_ROMAN;
+        break;
+    }
+
+    if (!FcPatternAddInteger (pattern, FC_SLANT, fcslant)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	goto FREE_PATTERN;
+    }
+
+    switch (toy_face->weight)
+    {
+    case CAIRO_FONT_WEIGHT_BOLD:
+        fcweight = FC_WEIGHT_BOLD;
+        break;
+    case CAIRO_FONT_WEIGHT_NORMAL:
+    default:
+        fcweight = FC_WEIGHT_MEDIUM;
+        break;
+    }
+
+    if (!FcPatternAddInteger (pattern, FC_WEIGHT, fcweight)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	goto FREE_PATTERN;
+    }
+
+    font_face = _cairo_ft_font_face_create_for_pattern (pattern);
+
+ FREE_PATTERN:
+    FcPatternDestroy (pattern);
+
+    *font_face_out = font_face;
+    return font_face->status;
+}
+#endif
+
+static cairo_bool_t
+_cairo_ft_font_face_destroy (void *abstract_face)
+{
+    cairo_ft_font_face_t *font_face = abstract_face;
+
+    /* When destroying a face created by cairo_ft_font_face_create_for_ft_face,
+     * we have a special "zombie" state for the face when the unscaled font
+     * is still alive but there are no other references to a font face with
+     * the same FT_Face.
+     *
+     * We go from:
+     *
+     *   font_face ------> unscaled
+     *        <-....weak....../
+     *
+     * To:
+     *
+     *    font_face <------- unscaled
+     */
+
+    if (font_face->unscaled &&
+	font_face->unscaled->from_face &&
+	font_face->next == NULL &&
+	font_face->unscaled->faces == font_face &&
+	CAIRO_REFERENCE_COUNT_GET_VALUE (&font_face->unscaled->base.ref_count) > 1)
+    {
+	_cairo_unscaled_font_destroy (&font_face->unscaled->base);
+	font_face->unscaled = NULL;
+
+	return FALSE;
+    }
+
+    if (font_face->unscaled) {
+	cairo_ft_font_face_t *tmp_face = NULL;
+	cairo_ft_font_face_t *last_face = NULL;
+
+	/* Remove face from linked list */
+	for (tmp_face = font_face->unscaled->faces;
+	     tmp_face;
+	     tmp_face = tmp_face->next)
+	{
+	    if (tmp_face == font_face) {
+		if (last_face)
+		    last_face->next = tmp_face->next;
+		else
+		    font_face->unscaled->faces = tmp_face->next;
+	    }
+
+	    last_face = tmp_face;
+	}
+
+	_cairo_unscaled_font_destroy (&font_face->unscaled->base);
+	font_face->unscaled = NULL;
+    }
+
+    _cairo_ft_options_fini (&font_face->ft_options);
+
+#if CAIRO_HAS_FC_FONT
+    if (font_face->pattern) {
+	FcPatternDestroy (font_face->pattern);
+	cairo_font_face_destroy (font_face->resolved_font_face);
+    }
+#endif
+
+    return TRUE;
+}
+
+static cairo_font_face_t *
+_cairo_ft_font_face_get_implementation (void                     *abstract_face,
+					const cairo_matrix_t       *font_matrix,
+					const cairo_matrix_t       *ctm,
+					const cairo_font_options_t *options)
+{
+    cairo_ft_font_face_t      *font_face = abstract_face;
+
+    /* The handling of font options is different depending on how the
+     * font face was created. When the user creates a font face with
+     * cairo_ft_font_face_create_for_ft_face(), then the load flags
+     * passed in augment the load flags for the options.  But for
+     * cairo_ft_font_face_create_for_pattern(), the load flags are
+     * derived from a pattern where the user has called
+     * cairo_ft_font_options_substitute(), so *just* use those load
+     * flags and ignore the options.
+     */
+
+#if CAIRO_HAS_FC_FONT
+    /* If we have an unresolved pattern, resolve it and create
+     * unscaled font.  Otherwise, use the ones stored in font_face.
+     */
+    if (font_face->pattern) {
+	cairo_font_face_t *resolved;
+
+	/* Cache the resolved font whilst the FcConfig remains consistent. */
+	resolved = font_face->resolved_font_face;
+	if (resolved != NULL) {
+	    if (! FcInitBringUptoDate ()) {
+		_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+		return (cairo_font_face_t *) &_cairo_font_face_nil;
+	    }
+
+	    if (font_face->resolved_config == FcConfigGetCurrent ())
+		return cairo_font_face_reference (resolved);
+
+	    cairo_font_face_destroy (resolved);
+	    font_face->resolved_font_face = NULL;
+	}
+
+	resolved = _cairo_ft_resolve_pattern (font_face->pattern,
+					      font_matrix,
+					      ctm,
+					      options);
+	if (unlikely (resolved->status))
+	    return resolved;
+
+	font_face->resolved_font_face = cairo_font_face_reference (resolved);
+	font_face->resolved_config = FcConfigGetCurrent ();
+
+	return resolved;
+    }
+#endif
+
+    return abstract_face;
+}
+
+const cairo_font_face_backend_t _cairo_ft_font_face_backend = {
+    CAIRO_FONT_TYPE_FT,
+#if CAIRO_HAS_FC_FONT
+    _cairo_ft_font_face_create_for_toy,
+#else
+    NULL,
+#endif
+    _cairo_ft_font_face_destroy,
+    _cairo_ft_font_face_scaled_font_create,
+    _cairo_ft_font_face_get_implementation
+};
+
+#if CAIRO_HAS_FC_FONT
+static cairo_font_face_t *
+_cairo_ft_font_face_create_for_pattern (FcPattern *pattern)
+{
+    cairo_ft_font_face_t *font_face;
+
+    font_face = _cairo_malloc (sizeof (cairo_ft_font_face_t));
+    if (unlikely (font_face == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *) &_cairo_font_face_nil;
+    }
+
+    font_face->unscaled = NULL;
+
+    _get_pattern_ft_options (pattern, &font_face->ft_options);
+
+    font_face->next = NULL;
+
+    font_face->pattern = FcPatternDuplicate (pattern);
+    if (unlikely (font_face->pattern == NULL)) {
+	free (font_face);
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *) &_cairo_font_face_nil;
+    }
+
+    font_face->resolved_font_face = NULL;
+    font_face->resolved_config = NULL;
+
+    _cairo_font_face_init (&font_face->base, &_cairo_ft_font_face_backend);
+
+    return &font_face->base;
+}
+#endif
+
+static cairo_font_face_t *
+_cairo_ft_font_face_create (cairo_ft_unscaled_font_t *unscaled,
+			    cairo_ft_options_t	     *ft_options)
+{
+    cairo_ft_font_face_t *font_face, **prev_font_face;
+
+    /* Looked for an existing matching font face */
+    for (font_face = unscaled->faces, prev_font_face = &unscaled->faces;
+	 font_face;
+	 prev_font_face = &font_face->next, font_face = font_face->next)
+    {
+	if (font_face->ft_options.load_flags == ft_options->load_flags &&
+	    font_face->ft_options.synth_flags == ft_options->synth_flags &&
+	    cairo_font_options_equal (&font_face->ft_options.base, &ft_options->base))
+	{
+	    if (font_face->base.status) {
+		/* The font_face has been left in an error state, abandon it. */
+		*prev_font_face = font_face->next;
+		break;
+	    }
+
+	    if (font_face->unscaled == NULL) {
+		/* Resurrect this "zombie" font_face (from
+		 * _cairo_ft_font_face_destroy), switching its unscaled_font
+		 * from owner to ownee. */
+		font_face->unscaled = unscaled;
+		_cairo_unscaled_font_reference (&unscaled->base);
+		return &font_face->base;
+	    } else
+		return cairo_font_face_reference (&font_face->base);
+	}
+    }
+
+    /* No match found, create a new one */
+    font_face = _cairo_malloc (sizeof (cairo_ft_font_face_t));
+    if (unlikely (!font_face)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+    }
+
+    font_face->unscaled = unscaled;
+    _cairo_unscaled_font_reference (&unscaled->base);
+
+    _cairo_ft_options_init_copy (&font_face->ft_options, ft_options);
+
+    if (unscaled->faces && unscaled->faces->unscaled == NULL) {
+	/* This "zombie" font_face (from _cairo_ft_font_face_destroy)
+	 * is no longer needed. */
+	assert (unscaled->from_face && unscaled->faces->next == NULL);
+	cairo_font_face_destroy (&unscaled->faces->base);
+	unscaled->faces = NULL;
+    }
+
+    font_face->next = unscaled->faces;
+    unscaled->faces = font_face;
+
+#if CAIRO_HAS_FC_FONT
+    font_face->pattern = NULL;
+#endif
+
+    _cairo_font_face_init (&font_face->base, &_cairo_ft_font_face_backend);
+
+    return &font_face->base;
+}
+
+/* implement the platform-specific interface */
+
+#if CAIRO_HAS_FC_FONT
+static cairo_status_t
+_cairo_ft_font_options_substitute (const cairo_font_options_t *options,
+				   FcPattern                  *pattern)
+{
+    FcValue v;
+
+    if (options->antialias != CAIRO_ANTIALIAS_DEFAULT)
+    {
+	if (FcPatternGet (pattern, FC_ANTIALIAS, 0, &v) == FcResultNoMatch)
+	{
+	    if (! FcPatternAddBool (pattern,
+			            FC_ANTIALIAS,
+				    options->antialias != CAIRO_ANTIALIAS_NONE))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    if (options->antialias != CAIRO_ANTIALIAS_SUBPIXEL) {
+		FcPatternDel (pattern, FC_RGBA);
+		if (! FcPatternAddInteger (pattern, FC_RGBA, FC_RGBA_NONE))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+	}
+    }
+
+    if (options->antialias != CAIRO_ANTIALIAS_DEFAULT)
+    {
+	if (FcPatternGet (pattern, FC_RGBA, 0, &v) == FcResultNoMatch)
+	{
+	    int rgba;
+
+	    if (options->antialias == CAIRO_ANTIALIAS_SUBPIXEL) {
+		switch (options->subpixel_order) {
+		case CAIRO_SUBPIXEL_ORDER_DEFAULT:
+		case CAIRO_SUBPIXEL_ORDER_RGB:
+		default:
+		    rgba = FC_RGBA_RGB;
+		    break;
+		case CAIRO_SUBPIXEL_ORDER_BGR:
+		    rgba = FC_RGBA_BGR;
+		    break;
+		case CAIRO_SUBPIXEL_ORDER_VRGB:
+		    rgba = FC_RGBA_VRGB;
+		    break;
+		case CAIRO_SUBPIXEL_ORDER_VBGR:
+		    rgba = FC_RGBA_VBGR;
+		    break;
+		}
+	    } else {
+		rgba = FC_RGBA_NONE;
+	    }
+
+	    if (! FcPatternAddInteger (pattern, FC_RGBA, rgba))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    if (options->lcd_filter != CAIRO_LCD_FILTER_DEFAULT)
+    {
+	if (FcPatternGet (pattern, FC_LCD_FILTER, 0, &v) == FcResultNoMatch)
+	{
+	    int lcd_filter;
+
+	    switch (options->lcd_filter) {
+	    case CAIRO_LCD_FILTER_NONE:
+		lcd_filter = FT_LCD_FILTER_NONE;
+		break;
+	    case CAIRO_LCD_FILTER_DEFAULT:
+	    case CAIRO_LCD_FILTER_INTRA_PIXEL:
+		lcd_filter = FT_LCD_FILTER_LEGACY;
+		break;
+	    case CAIRO_LCD_FILTER_FIR3:
+		lcd_filter = FT_LCD_FILTER_LIGHT;
+		break;
+	    default:
+	    case CAIRO_LCD_FILTER_FIR5:
+		lcd_filter = FT_LCD_FILTER_DEFAULT;
+		break;
+	    }
+
+	    if (! FcPatternAddInteger (pattern, FC_LCD_FILTER, lcd_filter))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    if (options->hint_style != CAIRO_HINT_STYLE_DEFAULT)
+    {
+	if (FcPatternGet (pattern, FC_HINTING, 0, &v) == FcResultNoMatch)
+	{
+	    if (! FcPatternAddBool (pattern,
+			            FC_HINTING,
+				    options->hint_style != CAIRO_HINT_STYLE_NONE))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+#ifdef FC_HINT_STYLE
+	if (FcPatternGet (pattern, FC_HINT_STYLE, 0, &v) == FcResultNoMatch)
+	{
+	    int hint_style;
+
+	    switch (options->hint_style) {
+	    case CAIRO_HINT_STYLE_NONE:
+		hint_style = FC_HINT_NONE;
+		break;
+	    case CAIRO_HINT_STYLE_SLIGHT:
+		hint_style = FC_HINT_SLIGHT;
+		break;
+	    case CAIRO_HINT_STYLE_MEDIUM:
+		hint_style = FC_HINT_MEDIUM;
+		break;
+	    case CAIRO_HINT_STYLE_FULL:
+	    case CAIRO_HINT_STYLE_DEFAULT:
+	    default:
+		hint_style = FC_HINT_FULL;
+		break;
+	    }
+
+	    if (! FcPatternAddInteger (pattern, FC_HINT_STYLE, hint_style))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+#endif
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_ft_font_options_substitute:
+ * @options: a #cairo_font_options_t object
+ * @pattern: an existing #FcPattern
+ *
+ * Add options to a #FcPattern based on a #cairo_font_options_t font
+ * options object. Options that are already in the pattern, are not overridden,
+ * so you should call this function after calling FcConfigSubstitute() (the
+ * user's settings should override options based on the surface type), but
+ * before calling FcDefaultSubstitute().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_ft_font_options_substitute (const cairo_font_options_t *options,
+				  FcPattern                  *pattern)
+{
+    if (cairo_font_options_status ((cairo_font_options_t *) options))
+	return;
+
+    _cairo_ft_font_options_substitute (options, pattern);
+}
+
+static cairo_font_face_t *
+_cairo_ft_resolve_pattern (FcPattern		      *pattern,
+			   const cairo_matrix_t       *font_matrix,
+			   const cairo_matrix_t       *ctm,
+			   const cairo_font_options_t *font_options)
+{
+    cairo_status_t status;
+
+    cairo_matrix_t scale;
+    FcPattern *resolved;
+    cairo_ft_font_transform_t sf;
+    FcResult result;
+    cairo_ft_unscaled_font_t *unscaled;
+    cairo_ft_options_t ft_options;
+    cairo_font_face_t *font_face;
+
+    scale = *ctm;
+    scale.x0 = scale.y0 = 0;
+    cairo_matrix_multiply (&scale,
+                           font_matrix,
+                           &scale);
+
+    status = _compute_transform (&sf, &scale, NULL);
+    if (unlikely (status))
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+
+    pattern = FcPatternDuplicate (pattern);
+    if (pattern == NULL)
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+
+    if (! FcPatternAddDouble (pattern, FC_PIXEL_SIZE, sf.y_scale)) {
+	font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
+	goto FREE_PATTERN;
+    }
+
+    if (! FcConfigSubstitute (NULL, pattern, FcMatchPattern)) {
+	font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
+	goto FREE_PATTERN;
+    }
+
+    status = _cairo_ft_font_options_substitute (font_options, pattern);
+    if (status) {
+	font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
+	goto FREE_PATTERN;
+    }
+
+    FcDefaultSubstitute (pattern);
+
+    status = _cairo_ft_unscaled_font_create_for_pattern (pattern, &unscaled);
+    if (unlikely (status)) {
+	font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
+	goto FREE_PATTERN;
+    }
+
+    if (unscaled == NULL) {
+	resolved = FcFontMatch (NULL, pattern, &result);
+	if (!resolved) {
+	    /* We failed to find any font. Substitute twin so that the user can
+	     * see something (and hopefully recognise that the font is missing)
+	     * and not just receive a NO_MEMORY error during rendering.
+	     */
+	    font_face = _cairo_font_face_twin_create_fallback ();
+	    goto FREE_PATTERN;
+	}
+
+	status = _cairo_ft_unscaled_font_create_for_pattern (resolved, &unscaled);
+	if (unlikely (status || unscaled == NULL)) {
+	    font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
+	    goto FREE_RESOLVED;
+	}
+    } else
+	resolved = pattern;
+
+    _get_pattern_ft_options (resolved, &ft_options);
+    font_face = _cairo_ft_font_face_create (unscaled, &ft_options);
+     _cairo_ft_options_fini (&ft_options);
+    _cairo_unscaled_font_destroy (&unscaled->base);
+
+FREE_RESOLVED:
+    if (resolved != pattern)
+	FcPatternDestroy (resolved);
+
+FREE_PATTERN:
+    FcPatternDestroy (pattern);
+
+    return font_face;
+}
+
+/**
+ * cairo_ft_font_face_create_for_pattern:
+ * @pattern: A fontconfig pattern.  Cairo makes a copy of the pattern
+ * if it needs to.  You are free to modify or free @pattern after this call.
+ *
+ * Creates a new font face for the FreeType font backend based on a
+ * fontconfig pattern. This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create(). The
+ * #cairo_scaled_font_t returned from cairo_scaled_font_create() is
+ * also for the FreeType backend and can be used with functions such
+ * as cairo_ft_scaled_font_lock_face().
+ *
+ * Font rendering options are represented both here and when you
+ * call cairo_scaled_font_create(). Font options that have a representation
+ * in a #FcPattern must be passed in here; to modify #FcPattern
+ * appropriately to reflect the options in a #cairo_font_options_t, call
+ * cairo_ft_font_options_substitute().
+ *
+ * The pattern's FC_FT_FACE element is inspected first and if that is set,
+ * that will be the FreeType font face associated with the returned cairo
+ * font face.  Otherwise the FC_FILE element is checked.  If it's set,
+ * that and the value of the FC_INDEX element (defaults to zero) of @pattern
+ * are used to load a font face from file.
+ *
+ * If both steps from the previous paragraph fails, @pattern will be passed
+ * to FcConfigSubstitute, FcDefaultSubstitute, and finally FcFontMatch,
+ * and the resulting font pattern is used.
+ *
+ * If the FC_FT_FACE element of @pattern is set, the user is responsible
+ * for making sure that the referenced FT_Face remains valid for the life
+ * time of the returned #cairo_font_face_t.  See
+ * cairo_ft_font_face_create_for_ft_face() for an example of how to couple
+ * the life time of the FT_Face to that of the cairo font-face.
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.0
+ **/
+cairo_font_face_t *
+cairo_ft_font_face_create_for_pattern (FcPattern *pattern)
+{
+    cairo_ft_unscaled_font_t *unscaled;
+    cairo_font_face_t *font_face;
+    cairo_ft_options_t ft_options;
+    cairo_status_t status;
+
+    status = _cairo_ft_unscaled_font_create_for_pattern (pattern, &unscaled);
+    if (unlikely (status)) {
+      if (status == CAIRO_STATUS_FILE_NOT_FOUND)
+	return (cairo_font_face_t *) &_cairo_font_face_nil_file_not_found;
+      else
+	return (cairo_font_face_t *) &_cairo_font_face_nil;
+    }
+    if (unlikely (unscaled == NULL)) {
+	/* Store the pattern.  We will resolve it and create unscaled
+	 * font when creating scaled fonts */
+	return _cairo_ft_font_face_create_for_pattern (pattern);
+    }
+
+    _get_pattern_ft_options (pattern, &ft_options);
+    font_face = _cairo_ft_font_face_create (unscaled, &ft_options);
+    _cairo_ft_options_fini (&ft_options);
+    _cairo_unscaled_font_destroy (&unscaled->base);
+
+    return font_face;
+}
+#endif
+
+/**
+ * cairo_ft_font_face_create_for_ft_face:
+ * @face: A FreeType face object, already opened. This must
+ *   be kept around until the face's ref_count drops to
+ *   zero and it is freed. Since the face may be referenced
+ *   internally to Cairo, the best way to determine when it
+ *   is safe to free the face is to pass a
+ *   #cairo_destroy_func_t to cairo_font_face_set_user_data()
+ * @load_flags: flags to pass to FT_Load_Glyph when loading
+ *   glyphs from the font. These flags are OR'ed together with
+ *   the flags derived from the #cairo_font_options_t passed
+ *   to cairo_scaled_font_create(), so only a few values such
+ *   as %FT_LOAD_VERTICAL_LAYOUT, and %FT_LOAD_FORCE_AUTOHINT
+ *   are useful. You should not pass any of the flags affecting
+ *   the load target, such as %FT_LOAD_TARGET_LIGHT.
+ *
+ * Creates a new font face for the FreeType font backend from a
+ * pre-opened FreeType face. This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create(). The
+ * #cairo_scaled_font_t returned from cairo_scaled_font_create() is
+ * also for the FreeType backend and can be used with functions such
+ * as cairo_ft_scaled_font_lock_face(). Note that Cairo may keep a reference
+ * to the FT_Face alive in a font-cache and the exact lifetime of the reference
+ * depends highly upon the exact usage pattern and is subject to external
+ * factors. You must not call FT_Done_Face() before the last reference to the
+ * #cairo_font_face_t has been dropped.
+ *
+ * As an example, below is how one might correctly couple the lifetime of
+ * the FreeType face object to the #cairo_font_face_t.
+ *
+ * <informalexample><programlisting>
+ * static const cairo_user_data_key_t key;
+ *
+ * font_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0);
+ * status = cairo_font_face_set_user_data (font_face, &key,
+ *                                ft_face, (cairo_destroy_func_t) FT_Done_Face);
+ * if (status) {
+ *    cairo_font_face_destroy (font_face);
+ *    FT_Done_Face (ft_face);
+ *    return ERROR;
+ * }
+ * </programlisting></informalexample>
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.0
+ **/
+cairo_font_face_t *
+cairo_ft_font_face_create_for_ft_face (FT_Face         face,
+				       int             load_flags)
+{
+    cairo_ft_unscaled_font_t *unscaled;
+    cairo_font_face_t *font_face;
+    cairo_ft_options_t ft_options;
+    cairo_status_t status;
+
+    status = _cairo_ft_unscaled_font_create_from_face (face, &unscaled);
+    if (unlikely (status))
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+
+    ft_options.load_flags = load_flags;
+    ft_options.synth_flags = 0;
+    _cairo_font_options_init_default (&ft_options.base);
+
+    font_face = _cairo_ft_font_face_create (unscaled, &ft_options);
+    _cairo_unscaled_font_destroy (&unscaled->base);
+
+    return font_face;
+}
+
+/**
+ * cairo_ft_font_face_set_synthesize:
+ * @font_face: The #cairo_ft_font_face_t object to modify
+ * @synth_flags: the set of synthesis options to enable
+ *
+ * FreeType provides the ability to synthesize different glyphs from a base
+ * font, which is useful if you lack those glyphs from a true bold or oblique
+ * font. See also #cairo_ft_synthesize_t.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_ft_font_face_set_synthesize (cairo_font_face_t *font_face,
+				   unsigned int synth_flags)
+{
+    cairo_ft_font_face_t *ft;
+
+    if (font_face->backend->type != CAIRO_FONT_TYPE_FT)
+	return;
+
+    ft = (cairo_ft_font_face_t *) font_face;
+    ft->ft_options.synth_flags |= synth_flags;
+}
+
+/**
+ * cairo_ft_font_face_unset_synthesize:
+ * @font_face: The #cairo_ft_font_face_t object to modify
+ * @synth_flags: the set of synthesis options to disable
+ *
+ * See cairo_ft_font_face_set_synthesize().
+ *
+ * Since: 1.12
+ **/
+void
+cairo_ft_font_face_unset_synthesize (cairo_font_face_t *font_face,
+				     unsigned int synth_flags)
+{
+    cairo_ft_font_face_t *ft;
+
+    if (font_face->backend->type != CAIRO_FONT_TYPE_FT)
+	return;
+
+    ft = (cairo_ft_font_face_t *) font_face;
+    ft->ft_options.synth_flags &= ~synth_flags;
+}
+
+/**
+ * cairo_ft_font_face_get_synthesize:
+ * @font_face: The #cairo_ft_font_face_t object to query
+ *
+ * See #cairo_ft_synthesize_t.
+ *
+ * Returns: the current set of synthesis options.
+ *
+ * Since: 1.12
+ **/
+unsigned int
+cairo_ft_font_face_get_synthesize (cairo_font_face_t *font_face)
+{
+    cairo_ft_font_face_t *ft;
+
+    if (font_face->backend->type != CAIRO_FONT_TYPE_FT)
+	return 0;
+
+    ft = (cairo_ft_font_face_t *) font_face;
+    return ft->ft_options.synth_flags;
+}
+
+/**
+ * cairo_ft_scaled_font_lock_face:
+ * @scaled_font: A #cairo_scaled_font_t from the FreeType font backend. Such an
+ *   object can be created by calling cairo_scaled_font_create() on a
+ *   FreeType backend font face (see cairo_ft_font_face_create_for_pattern(),
+ *   cairo_ft_font_face_create_for_ft_face()).
+ *
+ * cairo_ft_scaled_font_lock_face() gets the #FT_Face object from a FreeType
+ * backend font and scales it appropriately for the font and applies OpenType
+ * font variations if applicable. You must
+ * release the face with cairo_ft_scaled_font_unlock_face()
+ * when you are done using it.  Since the #FT_Face object can be
+ * shared between multiple #cairo_scaled_font_t objects, you must not
+ * lock any other font objects until you unlock this one. A count is
+ * kept of the number of times cairo_ft_scaled_font_lock_face() is
+ * called. cairo_ft_scaled_font_unlock_face() must be called the same number
+ * of times.
+ *
+ * You must be careful when using this function in a library or in a
+ * threaded application, because freetype's design makes it unsafe to
+ * call freetype functions simultaneously from multiple threads, (even
+ * if using distinct FT_Face objects). Because of this, application
+ * code that acquires an FT_Face object with this call must add its
+ * own locking to protect any use of that object, (and which also must
+ * protect any other calls into cairo as almost any cairo function
+ * might result in a call into the freetype library).
+ *
+ * Return value: The #FT_Face object for @font, scaled appropriately,
+ * or %NULL if @scaled_font is in an error state (see
+ * cairo_scaled_font_status()) or there is insufficient memory.
+ *
+ * Since: 1.0
+ **/
+FT_Face
+cairo_ft_scaled_font_lock_face (cairo_scaled_font_t *abstract_font)
+{
+    cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;
+    FT_Face face;
+    cairo_status_t status;
+
+    if (! _cairo_scaled_font_is_ft (abstract_font)) {
+	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    if (scaled_font->base.status)
+	return NULL;
+
+    face = _cairo_ft_unscaled_font_lock_face (scaled_font->unscaled);
+    if (unlikely (face == NULL)) {
+	status = _cairo_scaled_font_set_error (&scaled_font->base, CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled,
+				                &scaled_font->base.scale);
+    if (unlikely (status)) {
+	_cairo_ft_unscaled_font_unlock_face (scaled_font->unscaled);
+	status = _cairo_scaled_font_set_error (&scaled_font->base, status);
+	return NULL;
+    }
+
+    cairo_ft_apply_variations (face, scaled_font);
+
+    /* Note: We deliberately release the unscaled font's mutex here,
+     * so that we are not holding a lock across two separate calls to
+     * cairo function, (which would give the application some
+     * opportunity for creating deadlock. This is obviously unsafe,
+     * but as documented, the user must add manual locking when using
+     * this function. */
+     CAIRO_MUTEX_UNLOCK (scaled_font->unscaled->mutex);
+
+    return face;
+}
+
+/**
+ * cairo_ft_scaled_font_unlock_face:
+ * @scaled_font: A #cairo_scaled_font_t from the FreeType font backend. Such an
+ *   object can be created by calling cairo_scaled_font_create() on a
+ *   FreeType backend font face (see cairo_ft_font_face_create_for_pattern(),
+ *   cairo_ft_font_face_create_for_ft_face()).
+ *
+ * Releases a face obtained with cairo_ft_scaled_font_lock_face().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_ft_scaled_font_unlock_face (cairo_scaled_font_t *abstract_font)
+{
+    cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;
+
+    if (! _cairo_scaled_font_is_ft (abstract_font)) {
+	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+	return;
+    }
+
+    if (scaled_font->base.status)
+	return;
+
+    /* Note: We released the unscaled font's mutex at the end of
+     * cairo_ft_scaled_font_lock_face, so we have to acquire it again
+     * as _cairo_ft_unscaled_font_unlock_face expects it to be held
+     * when we call into it. */
+    CAIRO_MUTEX_LOCK (scaled_font->unscaled->mutex);
+
+    _cairo_ft_unscaled_font_unlock_face (scaled_font->unscaled);
+}
+
+static cairo_bool_t
+_cairo_ft_scaled_font_is_vertical (cairo_scaled_font_t *scaled_font)
+{
+    cairo_ft_scaled_font_t *ft_scaled_font;
+
+    if (!_cairo_scaled_font_is_ft (scaled_font))
+	return FALSE;
+
+    ft_scaled_font = (cairo_ft_scaled_font_t *) scaled_font;
+    if (ft_scaled_font->ft_options.load_flags & FT_LOAD_VERTICAL_LAYOUT)
+	return TRUE;
+    return FALSE;
+}
+
+unsigned int
+_cairo_ft_scaled_font_get_load_flags (cairo_scaled_font_t *scaled_font)
+{
+    cairo_ft_scaled_font_t *ft_scaled_font;
+
+    if (! _cairo_scaled_font_is_ft (scaled_font))
+	return 0;
+
+    ft_scaled_font = (cairo_ft_scaled_font_t *) scaled_font;
+    return ft_scaled_font->ft_options.load_flags;
+}
+
+void
+_cairo_ft_font_reset_static_data (void)
+{
+    _cairo_ft_unscaled_font_map_destroy ();
+}
diff --git a/libs/cairo-1.16.0/src/cairo-ft-private.h b/libs/cairo-1.16.0/src/cairo-ft-private.h
new file mode 100644
index 0000000..0dc8114
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-ft-private.h
@@ -0,0 +1,61 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Graydon Hoare <graydon@redhat.com>
+ *	Owen Taylor <otaylor@redhat.com>
+ */
+
+#ifndef CAIRO_FT_PRIVATE_H
+#define CAIRO_FT_PRIVATE_H
+
+#include "cairoint.h"
+#include "cairo-ft.h"
+
+#if CAIRO_HAS_FT_FONT
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_ft_unscaled_font cairo_ft_unscaled_font_t;
+
+cairo_private cairo_bool_t
+_cairo_scaled_font_is_ft (cairo_scaled_font_t *scaled_font);
+
+/* These functions are needed by the PDF backend, which needs to keep track of the
+ * the different fonts-on-disk used by a document, so it can embed them
+ */
+cairo_private unsigned int
+_cairo_ft_scaled_font_get_load_flags (cairo_scaled_font_t *scaled_font);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_HAS_FT_FONT */
+#endif /* CAIRO_FT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-ft.h b/libs/cairo-1.16.0/src/cairo-ft.h
new file mode 100644
index 0000000..29c43c9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-ft.h
@@ -0,0 +1,118 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Graydon Hoare <graydon@redhat.com>
+ *	Owen Taylor <otaylor@redhat.com>
+ */
+
+#ifndef CAIRO_FT_H
+#define CAIRO_FT_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_FT_FONT
+
+/* Fontconfig/Freetype platform-specific font interface */
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+#if CAIRO_HAS_FC_FONT
+#include <fontconfig/fontconfig.h>
+#endif
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_font_face_t *
+cairo_ft_font_face_create_for_ft_face (FT_Face         face,
+				       int             load_flags);
+
+/**
+ * cairo_ft_synthesize_t:
+ * @CAIRO_FT_SYNTHESIZE_BOLD: Embolden the glyphs (redraw with a pixel offset)
+ * @CAIRO_FT_SYNTHESIZE_OBLIQUE: Slant the glyph outline by 12 degrees to the
+ * right.
+ *
+ * A set of synthesis options to control how FreeType renders the glyphs
+ * for a particular font face.
+ *
+ * Individual synthesis features of a #cairo_ft_font_face_t can be set
+ * using cairo_ft_font_face_set_synthesize(), or disabled using
+ * cairo_ft_font_face_unset_synthesize(). The currently enabled set of
+ * synthesis options can be queried with cairo_ft_font_face_get_synthesize().
+ *
+ * Note: that when synthesizing glyphs, the font metrics returned will only
+ * be estimates.
+ *
+ * Since: 1.12
+ **/
+typedef enum {
+    CAIRO_FT_SYNTHESIZE_BOLD = 1 << 0,
+    CAIRO_FT_SYNTHESIZE_OBLIQUE = 1 << 1
+} cairo_ft_synthesize_t;
+
+cairo_public void
+cairo_ft_font_face_set_synthesize (cairo_font_face_t *font_face,
+				   unsigned int synth_flags);
+
+cairo_public void
+cairo_ft_font_face_unset_synthesize (cairo_font_face_t *font_face,
+				     unsigned int synth_flags);
+
+cairo_public unsigned int
+cairo_ft_font_face_get_synthesize (cairo_font_face_t *font_face);
+
+
+cairo_public FT_Face
+cairo_ft_scaled_font_lock_face (cairo_scaled_font_t *scaled_font);
+
+cairo_public void
+cairo_ft_scaled_font_unlock_face (cairo_scaled_font_t *scaled_font);
+
+#if CAIRO_HAS_FC_FONT
+
+cairo_public cairo_font_face_t *
+cairo_ft_font_face_create_for_pattern (FcPattern *pattern);
+
+cairo_public void
+cairo_ft_font_options_substitute (const cairo_font_options_t *options,
+				  FcPattern                  *pattern);
+
+#endif
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_FT_FONT */
+# error Cairo was not compiled with support for the freetype font backend
+#endif /* CAIRO_HAS_FT_FONT */
+
+#endif /* CAIRO_FT_H */
diff --git a/libs/cairo-1.16.0/src/cairo-gl-composite.c b/libs/cairo-1.16.0/src/cairo-gl-composite.c
new file mode 100644
index 0000000..5477ef0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-composite.c
@@ -0,0 +1,1364 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 2011 Linaro Limited
+ * Copyright © 2011 Samsung Electronics
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ *	Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ *	Henry Song <hsong@sisa.samsung.com>
+ *	Martin Robinson <mrobinson@igalia.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+
+/* FIXME: Copy of same routine in cairo-gl-msaa-compositor.c */
+static cairo_int_status_t
+_draw_int_rect (cairo_gl_context_t      *ctx,
+		cairo_gl_composite_t    *setup,
+		cairo_rectangle_int_t   *rect)
+{
+    cairo_box_t box;
+    cairo_point_t quad[4];
+
+    _cairo_box_from_rectangle (&box, rect);
+    quad[0].x = box.p1.x;
+    quad[0].y = box.p1.y;
+    quad[1].x = box.p1.x;
+    quad[1].y = box.p2.y;
+    quad[2].x = box.p2.x;
+    quad[2].y = box.p2.y;
+    quad[3].x = box.p2.x;
+    quad[3].y = box.p1.y;
+
+    return _cairo_gl_composite_emit_quad_as_tristrip (ctx, setup, quad);
+}
+
+static cairo_int_status_t
+_blit_texture_to_renderbuffer (cairo_gl_surface_t *surface)
+{
+    cairo_gl_context_t *ctx = NULL;
+    cairo_gl_composite_t setup;
+    cairo_surface_pattern_t pattern;
+    cairo_rectangle_int_t extents;
+    cairo_int_status_t status;
+
+    /* FIXME: This only permits blit when glesv3 is enabled.  But note that
+       glesv2 with the ANGLE extension should also be able to support this feature,
+       so once the ANGLE support code is in place this check can be relaxed. */
+    if (((cairo_gl_context_t *)surface->base.device)->gl_flavor != CAIRO_GL_FLAVOR_ES3)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    if (! surface->content_in_texture)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    memset (&setup, 0, sizeof (cairo_gl_composite_t));
+
+    status = _cairo_gl_composite_set_operator (&setup,
+					       CAIRO_OPERATOR_SOURCE,
+					       FALSE);
+
+    if (status)
+	return status;
+
+    setup.dst = surface;
+    setup.clip_region = surface->clip_region;
+
+    _cairo_pattern_init_for_surface (&pattern, &surface->base);
+    status = _cairo_gl_composite_set_source (&setup, &pattern.base,
+					     NULL, NULL, FALSE);
+    _cairo_pattern_fini (&pattern.base);
+
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_multisample (&setup);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+
+    if (unlikely (status))
+	goto FAIL;
+
+    extents.x = extents.y = 0;
+    extents.width = surface->width;
+    extents.height = surface->height;
+
+    status = _draw_int_rect (ctx, &setup, &extents);
+
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	surface->content_in_texture = FALSE;
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+
+    if (ctx) {
+	_cairo_gl_composite_flush (ctx);
+	status = _cairo_gl_context_release (ctx, status);
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_gl_composite_set_source (cairo_gl_composite_t *setup,
+				const cairo_pattern_t *pattern,
+				const cairo_rectangle_int_t *sample,
+				const cairo_rectangle_int_t *extents,
+				cairo_bool_t use_texgen)
+{
+    _cairo_gl_operand_destroy (&setup->src);
+    return _cairo_gl_operand_init (&setup->src, pattern, setup->dst,
+				   sample, extents, use_texgen);
+}
+
+void
+_cairo_gl_composite_set_source_operand (cairo_gl_composite_t *setup,
+					const cairo_gl_operand_t *source)
+{
+    cairo_int_status_t status;
+
+    _cairo_gl_operand_destroy (&setup->src);
+    _cairo_gl_operand_copy (&setup->src, source);
+
+    if (source->type == CAIRO_GL_OPERAND_TEXTURE)
+	status = _cairo_gl_surface_resolve_multisampling (source->texture.surface);
+}
+
+void
+_cairo_gl_composite_set_solid_source (cairo_gl_composite_t *setup,
+				      const cairo_color_t *color)
+{
+    _cairo_gl_operand_destroy (&setup->src);
+    _cairo_gl_solid_operand_init (&setup->src, color);
+}
+
+cairo_int_status_t
+_cairo_gl_composite_set_mask (cairo_gl_composite_t *setup,
+			      const cairo_pattern_t *pattern,
+			      const cairo_rectangle_int_t *sample,
+			      const cairo_rectangle_int_t *extents,
+			      cairo_bool_t use_texgen)
+{
+    _cairo_gl_operand_destroy (&setup->mask);
+    if (pattern == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_gl_operand_init (&setup->mask, pattern, setup->dst,
+				   sample, extents, use_texgen);
+}
+
+void
+_cairo_gl_composite_set_mask_operand (cairo_gl_composite_t *setup,
+				      const cairo_gl_operand_t *mask)
+{
+    cairo_int_status_t status;
+    _cairo_gl_operand_destroy (&setup->mask);
+    if (mask) {
+	_cairo_gl_operand_copy (&setup->mask, mask);
+	if (mask->type == CAIRO_GL_OPERAND_TEXTURE)
+	    status = _cairo_gl_surface_resolve_multisampling (mask->texture.surface);
+    }
+}
+
+void
+_cairo_gl_composite_set_spans (cairo_gl_composite_t *setup)
+{
+    setup->spans = TRUE;
+}
+
+void
+_cairo_gl_composite_set_multisample (cairo_gl_composite_t *setup)
+{
+    setup->multisample = TRUE;
+}
+
+void
+_cairo_gl_composite_set_clip_region (cairo_gl_composite_t *setup,
+				     cairo_region_t *clip_region)
+{
+    setup->clip_region = clip_region;
+}
+
+void
+_cairo_gl_composite_set_clip (cairo_gl_composite_t *setup,
+			      cairo_clip_t *clip)
+{
+    setup->clip = clip;
+}
+
+static void
+_cairo_gl_composite_bind_to_shader (cairo_gl_context_t   *ctx,
+				    cairo_gl_composite_t *setup)
+{
+    _cairo_gl_shader_bind_matrix4f(ctx, ctx->current_shader->mvp_location,
+				   ctx->modelviewprojection_matrix);
+    _cairo_gl_operand_bind_to_shader (ctx, &setup->src,  CAIRO_GL_TEX_SOURCE);
+    _cairo_gl_operand_bind_to_shader (ctx, &setup->mask, CAIRO_GL_TEX_MASK);
+}
+
+static void
+_cairo_gl_texture_set_filter (cairo_gl_context_t *ctx,
+			      GLuint              target,
+			      cairo_filter_t      filter)
+{
+    switch (filter) {
+    case CAIRO_FILTER_FAST:
+    case CAIRO_FILTER_NEAREST:
+	glTexParameteri (target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri (target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	break;
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BEST:
+    case CAIRO_FILTER_BILINEAR:
+	glTexParameteri (target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri (target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	break;
+    default:
+    case CAIRO_FILTER_GAUSSIAN:
+	ASSERT_NOT_REACHED;
+    }
+}
+
+static void
+_cairo_gl_texture_set_extend (cairo_gl_context_t *ctx,
+			      GLuint              target,
+			      cairo_extend_t      extend)
+{
+    GLint wrap_mode;
+    assert (! _cairo_gl_device_requires_power_of_two_textures (&ctx->base) ||
+	    (extend != CAIRO_EXTEND_REPEAT && extend != CAIRO_EXTEND_REFLECT));
+
+    switch (extend) {
+    case CAIRO_EXTEND_NONE:
+	if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	    ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2)
+	    wrap_mode = GL_CLAMP_TO_EDGE;
+	else
+	    wrap_mode = GL_CLAMP_TO_BORDER;
+	break;
+    case CAIRO_EXTEND_PAD:
+	wrap_mode = GL_CLAMP_TO_EDGE;
+	break;
+    case CAIRO_EXTEND_REPEAT:
+	if (ctx->has_npot_repeat)
+	    wrap_mode = GL_REPEAT;
+	else
+	    wrap_mode = GL_CLAMP_TO_EDGE;
+	break;
+    case CAIRO_EXTEND_REFLECT:
+	if (ctx->has_npot_repeat)
+	    wrap_mode = GL_MIRRORED_REPEAT;
+	else
+	    wrap_mode = GL_CLAMP_TO_EDGE;
+	break;
+    default:
+	wrap_mode = 0;
+    }
+
+    if (likely (wrap_mode)) {
+	glTexParameteri (target, GL_TEXTURE_WRAP_S, wrap_mode);
+	glTexParameteri (target, GL_TEXTURE_WRAP_T, wrap_mode);
+    }
+}
+
+
+static void
+_cairo_gl_context_setup_operand (cairo_gl_context_t *ctx,
+				 cairo_gl_tex_t      tex_unit,
+				 cairo_gl_operand_t *operand,
+				 unsigned int        vertex_offset,
+				 cairo_bool_t        vertex_size_changed)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    cairo_bool_t needs_setup;
+
+    /* XXX: we need to do setup when switching from shaders
+     * to no shaders (or back) */
+    needs_setup = vertex_size_changed;
+    needs_setup |= _cairo_gl_operand_needs_setup (&ctx->operands[tex_unit],
+						 operand,
+						 vertex_offset);
+
+    if (needs_setup) {
+	_cairo_gl_composite_flush (ctx);
+	_cairo_gl_context_destroy_operand (ctx, tex_unit);
+    }
+
+    memcpy (&ctx->operands[tex_unit], operand, sizeof (cairo_gl_operand_t));
+    ctx->operands[tex_unit].vertex_offset = vertex_offset;
+
+    if (! needs_setup)
+	return;
+
+    switch (operand->type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+	break;
+	/* fall through */
+    case CAIRO_GL_OPERAND_CONSTANT:
+	break;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	glActiveTexture (GL_TEXTURE0 + tex_unit);
+	glBindTexture (ctx->tex_target, operand->texture.tex);
+	_cairo_gl_texture_set_extend (ctx, ctx->tex_target,
+				      operand->texture.attributes.extend);
+	_cairo_gl_texture_set_filter (ctx, ctx->tex_target,
+				      operand->texture.attributes.filter);
+
+	if (! operand->texture.texgen) {
+	    dispatch->VertexAttribPointer (CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + tex_unit, 2,
+					   GL_FLOAT, GL_FALSE, ctx->vertex_size,
+					   ctx->vb + vertex_offset);
+	    dispatch->EnableVertexAttribArray (CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + tex_unit);
+	}
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	glActiveTexture (GL_TEXTURE0 + tex_unit);
+	glBindTexture (ctx->tex_target, operand->gradient.gradient->tex);
+	_cairo_gl_texture_set_extend (ctx, ctx->tex_target, operand->gradient.extend);
+	_cairo_gl_texture_set_filter (ctx, ctx->tex_target, CAIRO_FILTER_BILINEAR);
+
+	if (! operand->gradient.texgen) {
+	    dispatch->VertexAttribPointer (CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + tex_unit, 2,
+					   GL_FLOAT, GL_FALSE, ctx->vertex_size,
+					   ctx->vb + vertex_offset);
+	    dispatch->EnableVertexAttribArray (CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + tex_unit);
+	}
+	break;
+    }
+}
+
+static void
+_cairo_gl_context_setup_spans (cairo_gl_context_t *ctx,
+			       cairo_bool_t        spans_enabled,
+			       unsigned int        vertex_size,
+			       unsigned int        vertex_offset)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+
+    if (! spans_enabled) {
+	dispatch->DisableVertexAttribArray (CAIRO_GL_COLOR_ATTRIB_INDEX);
+	ctx->spans = FALSE;
+	return;
+    }
+
+    dispatch->VertexAttribPointer (CAIRO_GL_COLOR_ATTRIB_INDEX, 4,
+				   GL_UNSIGNED_BYTE, GL_TRUE, vertex_size,
+				   ctx->vb + vertex_offset);
+    dispatch->EnableVertexAttribArray (CAIRO_GL_COLOR_ATTRIB_INDEX);
+    ctx->spans = TRUE;
+}
+
+void
+_cairo_gl_context_destroy_operand (cairo_gl_context_t *ctx,
+				   cairo_gl_tex_t tex_unit)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+
+    if  (!_cairo_gl_context_is_flushed (ctx))
+	_cairo_gl_composite_flush (ctx);
+
+    switch (ctx->operands[tex_unit].type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+	break;
+	/* fall through */
+    case CAIRO_GL_OPERAND_CONSTANT:
+	break;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	dispatch->DisableVertexAttribArray (CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + tex_unit);
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	dispatch->DisableVertexAttribArray (CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + tex_unit);
+	break;
+    }
+
+    memset (&ctx->operands[tex_unit], 0, sizeof (cairo_gl_operand_t));
+}
+
+static void
+_cairo_gl_set_operator (cairo_gl_context_t *ctx,
+			cairo_operator_t    op,
+			cairo_bool_t        component_alpha)
+{
+    struct {
+	GLenum src;
+	GLenum dst;
+    } blend_factors[] = {
+	{ GL_ZERO, GL_ZERO }, /* Clear */
+	{ GL_ONE, GL_ZERO }, /* Source */
+	{ GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, /* Over */
+	{ GL_DST_ALPHA, GL_ZERO }, /* In */
+	{ GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, /* Out */
+	{ GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, /* Atop */
+
+	{ GL_ZERO, GL_ONE }, /* Dest */
+	{ GL_ONE_MINUS_DST_ALPHA, GL_ONE }, /* DestOver */
+	{ GL_ZERO, GL_SRC_ALPHA }, /* DestIn */
+	{ GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, /* DestOut */
+	{ GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, /* DestAtop */
+
+	{ GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, /* Xor */
+	{ GL_ONE, GL_ONE }, /* Add */
+    };
+    GLenum src_factor, dst_factor;
+
+    assert (op < ARRAY_LENGTH (blend_factors));
+    /* different dst and component_alpha changes cause flushes elsewhere */
+    if (ctx->current_operator != op)
+	_cairo_gl_composite_flush (ctx);
+    ctx->current_operator = op;
+
+    src_factor = blend_factors[op].src;
+    dst_factor = blend_factors[op].dst;
+
+    /* Even when the user requests CAIRO_CONTENT_COLOR, we use GL_RGBA
+     * due to texture filtering of GL_CLAMP_TO_BORDER.  So fix those
+     * bits in that case.
+     */
+    if (ctx->current_target->base.content == CAIRO_CONTENT_COLOR) {
+	if (src_factor == GL_ONE_MINUS_DST_ALPHA)
+	    src_factor = GL_ZERO;
+	if (src_factor == GL_DST_ALPHA)
+	    src_factor = GL_ONE;
+    }
+
+    if (component_alpha) {
+	if (dst_factor == GL_ONE_MINUS_SRC_ALPHA)
+	    dst_factor = GL_ONE_MINUS_SRC_COLOR;
+	if (dst_factor == GL_SRC_ALPHA)
+	    dst_factor = GL_SRC_COLOR;
+    }
+
+    if (ctx->current_target->base.content == CAIRO_CONTENT_ALPHA) {
+	glBlendFuncSeparate (GL_ZERO, GL_ZERO, src_factor, dst_factor);
+    } else if (ctx->current_target->base.content == CAIRO_CONTENT_COLOR) {
+	glBlendFuncSeparate (src_factor, dst_factor, GL_ONE, GL_ONE);
+    } else {
+	glBlendFunc (src_factor, dst_factor);
+    }
+}
+
+static cairo_status_t
+_cairo_gl_composite_begin_component_alpha  (cairo_gl_context_t *ctx,
+					    cairo_gl_composite_t *setup)
+{
+    cairo_gl_shader_t *pre_shader = NULL;
+    cairo_status_t status;
+
+    /* For CLEAR, cairo's rendering equation (quoting Owen's description in:
+     * https://lists.cairographics.org/archives/cairo/2005-August/004992.html)
+     * is:
+     *     mask IN clip ? src OP dest : dest
+     * or more simply:
+     *     mask IN CLIP ? 0 : dest
+     *
+     * where the ternary operator A ? B : C is (A * B) + ((1 - A) * C).
+     *
+     * The model we use in _cairo_gl_set_operator() is Render's:
+     *     src IN mask IN clip OP dest
+     * which would boil down to:
+     *     0 (bounded by the extents of the drawing).
+     *
+     * However, we can do a Render operation using an opaque source
+     * and DEST_OUT to produce:
+     *    1 IN mask IN clip DEST_OUT dest
+     * which is
+     *    mask IN clip ? 0 : dest
+     */
+    if (setup->op == CAIRO_OPERATOR_CLEAR) {
+	_cairo_gl_solid_operand_init (&setup->src, CAIRO_COLOR_WHITE);
+	setup->op = CAIRO_OPERATOR_DEST_OUT;
+    }
+
+    /*
+     * implements component-alpha %CAIRO_OPERATOR_OVER using two passes of
+     * the simpler operations %CAIRO_OPERATOR_DEST_OUT and %CAIRO_OPERATOR_ADD.
+     *
+     * From http://anholt.livejournal.com/32058.html:
+     *
+     * The trouble is that component-alpha rendering requires two different sources
+     * for blending: one for the source value to the blender, which is the
+     * per-channel multiplication of source and mask, and one for the source alpha
+     * for multiplying with the destination channels, which is the multiplication
+     * of the source channels by the mask alpha. So the equation for Over is:
+     *
+     * dst.A = src.A * mask.A + (1 - (src.A * mask.A)) * dst.A
+     * dst.R = src.R * mask.R + (1 - (src.A * mask.R)) * dst.R
+     * dst.G = src.G * mask.G + (1 - (src.A * mask.G)) * dst.G
+     * dst.B = src.B * mask.B + (1 - (src.A * mask.B)) * dst.B
+     *
+     * But we can do some simpler operations, right? How about PictOpOutReverse,
+     * which has a source factor of 0 and dest factor of (1 - source alpha). We
+     * can get the source alpha value (srca.X = src.A * mask.X) out of the texture
+     * blenders pretty easily. So we can do a component-alpha OutReverse, which
+     * gets us:
+     *
+     * dst.A = 0 + (1 - (src.A * mask.A)) * dst.A
+     * dst.R = 0 + (1 - (src.A * mask.R)) * dst.R
+     * dst.G = 0 + (1 - (src.A * mask.G)) * dst.G
+     * dst.B = 0 + (1 - (src.A * mask.B)) * dst.B
+     *
+     * OK. And if an op doesn't use the source alpha value for the destination
+     * factor, then we can do the channel multiplication in the texture blenders
+     * to get the source value, and ignore the source alpha that we wouldn't use.
+     * We've supported this in the Radeon driver for a long time. An example would
+     * be PictOpAdd, which does:
+     *
+     * dst.A = src.A * mask.A + dst.A
+     * dst.R = src.R * mask.R + dst.R
+     * dst.G = src.G * mask.G + dst.G
+     * dst.B = src.B * mask.B + dst.B
+     *
+     * Hey, this looks good! If we do a PictOpOutReverse and then a PictOpAdd right
+     * after it, we get:
+     *
+     * dst.A = src.A * mask.A + ((1 - (src.A * mask.A)) * dst.A)
+     * dst.R = src.R * mask.R + ((1 - (src.A * mask.R)) * dst.R)
+     * dst.G = src.G * mask.G + ((1 - (src.A * mask.G)) * dst.G)
+     * dst.B = src.B * mask.B + ((1 - (src.A * mask.B)) * dst.B)
+     *
+     * This two-pass trickery could be avoided using a new GL extension that
+     * lets two values come out of the shader and into the blend unit.
+     */
+    if (setup->op == CAIRO_OPERATOR_OVER) {
+	setup->op = CAIRO_OPERATOR_ADD;
+	status = _cairo_gl_get_shader_by_type (ctx,
+					       &setup->src,
+					       &setup->mask,
+					       setup->spans,
+					       CAIRO_GL_SHADER_IN_CA_SOURCE_ALPHA,
+					       &pre_shader);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (ctx->pre_shader != pre_shader)
+	_cairo_gl_composite_flush (ctx);
+    ctx->pre_shader = pre_shader;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_scissor_to_doubles (cairo_gl_surface_t	*surface,
+		     double x1, double y1,
+		     double x2, double y2)
+{
+    double height;
+
+    height = y2 - y1;
+    if (_cairo_gl_surface_is_texture (surface) == FALSE)
+	y1 = surface->height - (y1 + height);
+    glScissor (x1, y1, x2 - x1, height);
+    glEnable (GL_SCISSOR_TEST);
+}
+
+void
+_cairo_gl_scissor_to_rectangle (cairo_gl_surface_t *surface,
+		       const cairo_rectangle_int_t *r)
+{
+    _scissor_to_doubles (surface, r->x, r->y, r->x+r->width, r->y+r->height);
+}
+
+static void
+_scissor_to_box (cairo_gl_surface_t	*surface,
+		 const cairo_box_t	*box)
+{
+    double x1, y1, x2, y2;
+    _cairo_box_to_doubles (box, &x1, &y1, &x2, &y2);
+    _scissor_to_doubles (surface, x1, y1, x2, y2);
+}
+
+static cairo_bool_t
+_cairo_gl_composite_setup_vbo (cairo_gl_context_t *ctx,
+			       unsigned int size_per_vertex)
+{
+    cairo_bool_t vertex_size_changed = ctx->vertex_size != size_per_vertex;
+    if (vertex_size_changed) {
+	ctx->vertex_size = size_per_vertex;
+	_cairo_gl_composite_flush (ctx);
+    }
+
+    if (_cairo_gl_context_is_flushed (ctx)) {
+	ctx->dispatch.VertexAttribPointer (CAIRO_GL_VERTEX_ATTRIB_INDEX, 2,
+					   GL_FLOAT, GL_FALSE, size_per_vertex,
+					   ctx->vb);
+	ctx->dispatch.EnableVertexAttribArray (CAIRO_GL_VERTEX_ATTRIB_INDEX);
+    }
+
+    return vertex_size_changed;
+}
+
+static void
+_disable_stencil_buffer (void)
+{
+    glDisable (GL_STENCIL_TEST);
+    glDepthMask (GL_FALSE);
+}
+
+static cairo_int_status_t
+_cairo_gl_composite_setup_painted_clipping (cairo_gl_composite_t *setup,
+					    cairo_gl_context_t *ctx,
+					    int vertex_size)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+
+    cairo_gl_surface_t *dst = setup->dst;
+    cairo_clip_t *clip = setup->clip;
+
+    if (clip->num_boxes == 1 && clip->path == NULL) {
+	_scissor_to_box (dst, &clip->boxes[0]);
+	goto disable_stencil_buffer_and_return;
+    }
+
+    if (! _cairo_gl_ensure_stencil (ctx, setup->dst)) {
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	goto disable_stencil_buffer_and_return;
+    }
+
+    /* We only want to clear the part of the stencil buffer
+     * that we are about to use. It also does not hurt to
+     * scissor around the painted clip. */
+    _cairo_gl_scissor_to_rectangle (dst, _cairo_clip_get_extents (clip));
+
+    /* The clip is not rectangular, so use the stencil buffer. */
+    glDepthMask (GL_TRUE);
+    glEnable (GL_STENCIL_TEST);
+
+    /* Texture surfaces have private depth/stencil buffers, so we can
+     * rely on any previous clip being cached there. */
+    if (_cairo_gl_surface_is_texture (setup->dst)) {
+	cairo_clip_t *old_clip = setup->dst->clip_on_stencil_buffer;
+	if (_cairo_clip_equal (old_clip, setup->clip))
+	    goto activate_stencil_buffer_and_return;
+
+	if (old_clip) {
+	    _cairo_clip_destroy (setup->dst->clip_on_stencil_buffer);
+	}
+
+	setup->dst->clip_on_stencil_buffer = _cairo_clip_copy (setup->clip);
+    }
+
+    glClearStencil (0);
+    glClear (GL_STENCIL_BUFFER_BIT);
+
+    glStencilOp (GL_REPLACE, GL_REPLACE, GL_REPLACE);
+    glStencilFunc (GL_EQUAL, 1, 0xffffffff);
+    glColorMask (0, 0, 0, 0);
+
+    status = _cairo_gl_msaa_compositor_draw_clip (ctx, setup, clip);
+
+    if (unlikely (status)) {
+	glColorMask (1, 1, 1, 1);
+	goto disable_stencil_buffer_and_return;
+    }
+
+    /* We want to only render to the stencil buffer, so draw everything now.
+       Flushing also unbinds the VBO, which we want to rebind for regular
+       drawing. */
+    _cairo_gl_composite_flush (ctx);
+    _cairo_gl_composite_setup_vbo (ctx, vertex_size);
+
+activate_stencil_buffer_and_return:
+    glColorMask (1, 1, 1, 1);
+    glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
+    glStencilFunc (GL_EQUAL, 1, 0xffffffff);
+    return CAIRO_INT_STATUS_SUCCESS;
+
+disable_stencil_buffer_and_return:
+    _disable_stencil_buffer ();
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_gl_composite_setup_clipping (cairo_gl_composite_t *setup,
+				    cairo_gl_context_t *ctx,
+				    int vertex_size)
+{
+    cairo_bool_t clip_changing = TRUE;
+    cairo_bool_t clip_region_changing = TRUE;
+
+    if (! ctx->clip && ! setup->clip && ! setup->clip_region && ! ctx->clip_region)
+	goto disable_all_clipping;
+
+    clip_changing = ! _cairo_clip_equal (ctx->clip, setup->clip);
+    clip_region_changing = ! cairo_region_equal (ctx->clip_region, setup->clip_region);
+    if (! _cairo_gl_context_is_flushed (ctx) &&
+	(clip_region_changing || clip_changing))
+	_cairo_gl_composite_flush (ctx);
+
+    assert (!setup->clip_region || !setup->clip);
+
+    /* setup->clip is only used by the msaa compositor and setup->clip_region
+     * only by the other compositors, so it's safe to wait to clean up obsolete
+     * clips. */
+    if (clip_region_changing) {
+	cairo_region_destroy (ctx->clip_region);
+	ctx->clip_region = cairo_region_reference (setup->clip_region);
+    }
+    if (clip_changing) {
+	_cairo_clip_destroy (ctx->clip);
+	ctx->clip = _cairo_clip_copy (setup->clip);
+    }
+
+    /* For clip regions, we scissor right before drawing. */
+    if (setup->clip_region)
+	goto disable_all_clipping;
+
+    if (setup->clip)
+	return _cairo_gl_composite_setup_painted_clipping (setup, ctx,
+							   vertex_size);
+disable_all_clipping:
+    _disable_stencil_buffer ();
+    glDisable (GL_SCISSOR_TEST);
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gl_set_operands_and_operator (cairo_gl_composite_t *setup,
+				     cairo_gl_context_t *ctx)
+{
+    unsigned int dst_size, src_size, mask_size, vertex_size;
+    cairo_status_t status;
+    cairo_gl_shader_t *shader;
+    cairo_bool_t component_alpha;
+    cairo_bool_t vertex_size_changed;
+
+    component_alpha =
+	setup->mask.type == CAIRO_GL_OPERAND_TEXTURE &&
+	setup->mask.texture.attributes.has_component_alpha;
+
+    /* Do various magic for component alpha */
+    if (component_alpha) {
+	status = _cairo_gl_composite_begin_component_alpha (ctx, setup);
+	if (unlikely (status))
+	    return status;
+     } else {
+	if (ctx->pre_shader) {
+	    _cairo_gl_composite_flush (ctx);
+	    ctx->pre_shader = NULL;
+	}
+    }
+
+    status = _cairo_gl_get_shader_by_type (ctx,
+					   &setup->src,
+					   &setup->mask,
+					   setup->spans,
+					   component_alpha ?
+					   CAIRO_GL_SHADER_IN_CA_SOURCE :
+					   CAIRO_GL_SHADER_IN_NORMAL,
+					   &shader);
+    if (unlikely (status)) {
+	ctx->pre_shader = NULL;
+	return status;
+    }
+    if (ctx->current_shader != shader)
+	_cairo_gl_composite_flush (ctx);
+
+    status = CAIRO_STATUS_SUCCESS;
+
+    dst_size = 2 * sizeof (GLfloat);
+    src_size = _cairo_gl_operand_get_vertex_size (&setup->src);
+    mask_size = _cairo_gl_operand_get_vertex_size (&setup->mask);
+    vertex_size = dst_size + src_size + mask_size;
+
+    if (setup->spans)
+	vertex_size += sizeof (GLfloat);
+
+    vertex_size_changed = _cairo_gl_composite_setup_vbo (ctx, vertex_size);
+
+    _cairo_gl_context_setup_operand (ctx, CAIRO_GL_TEX_SOURCE, &setup->src, dst_size, vertex_size_changed);
+    _cairo_gl_context_setup_operand (ctx, CAIRO_GL_TEX_MASK, &setup->mask, dst_size + src_size, vertex_size_changed);
+
+    _cairo_gl_context_setup_spans (ctx, setup->spans, vertex_size,
+				   dst_size + src_size + mask_size);
+
+    _cairo_gl_set_operator (ctx, setup->op, component_alpha);
+
+    if (_cairo_gl_context_is_flushed (ctx)) {
+	if (ctx->pre_shader) {
+	    _cairo_gl_set_shader (ctx, ctx->pre_shader);
+	    _cairo_gl_composite_bind_to_shader (ctx, setup);
+	}
+	_cairo_gl_set_shader (ctx, shader);
+	_cairo_gl_composite_bind_to_shader (ctx, setup);
+    }
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gl_composite_begin (cairo_gl_composite_t *setup,
+			   cairo_gl_context_t **ctx_out)
+{
+    cairo_gl_context_t *ctx;
+    cairo_status_t status;
+
+    assert (setup->dst);
+
+    status = _cairo_gl_context_acquire (setup->dst->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gl_context_set_destination (ctx, setup->dst, setup->multisample);
+    glEnable (GL_BLEND);
+
+    status = _cairo_gl_set_operands_and_operator (setup, ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    status = _cairo_gl_composite_setup_clipping (setup, ctx, ctx->vertex_size);
+    if (unlikely (status))
+	goto FAIL;
+
+    *ctx_out = ctx;
+
+FAIL:
+    if (unlikely (status))
+	status = _cairo_gl_context_release (ctx, status);
+
+    return status;
+}
+
+static inline void
+_cairo_gl_composite_draw_tristrip (cairo_gl_context_t *ctx)
+{
+    cairo_array_t* indices = &ctx->tristrip_indices;
+    const unsigned short *indices_array = _cairo_array_index_const (indices, 0);
+
+    if (ctx->pre_shader) {
+	cairo_gl_shader_t *prev_shader = ctx->current_shader;
+
+	_cairo_gl_set_shader (ctx, ctx->pre_shader);
+	_cairo_gl_set_operator (ctx, CAIRO_OPERATOR_DEST_OUT, TRUE);
+	glDrawElements (GL_TRIANGLE_STRIP, _cairo_array_num_elements (indices), GL_UNSIGNED_SHORT, indices_array);
+
+	_cairo_gl_set_shader (ctx, prev_shader);
+	_cairo_gl_set_operator (ctx, CAIRO_OPERATOR_ADD, TRUE);
+    }
+
+    glDrawElements (GL_TRIANGLE_STRIP, _cairo_array_num_elements (indices), GL_UNSIGNED_SHORT, indices_array);
+    _cairo_array_truncate (indices, 0);
+}
+
+static inline void
+_cairo_gl_composite_draw_triangles (cairo_gl_context_t *ctx,
+				    unsigned int count)
+{
+    if (! ctx->pre_shader) {
+	glDrawArrays (GL_TRIANGLES, 0, count);
+    } else {
+	cairo_gl_shader_t *prev_shader = ctx->current_shader;
+
+	_cairo_gl_set_shader (ctx, ctx->pre_shader);
+	_cairo_gl_set_operator (ctx, CAIRO_OPERATOR_DEST_OUT, TRUE);
+	glDrawArrays (GL_TRIANGLES, 0, count);
+
+	_cairo_gl_set_shader (ctx, prev_shader);
+	_cairo_gl_set_operator (ctx, CAIRO_OPERATOR_ADD, TRUE);
+	glDrawArrays (GL_TRIANGLES, 0, count);
+    }
+}
+
+static void
+_cairo_gl_composite_draw_triangles_with_clip_region (cairo_gl_context_t *ctx,
+						     unsigned int count)
+{
+    int i, num_rectangles;
+
+    if (!ctx->clip_region) {
+	_cairo_gl_composite_draw_triangles (ctx, count);
+	return;
+    }
+
+    num_rectangles = cairo_region_num_rectangles (ctx->clip_region);
+    for (i = 0; i < num_rectangles; i++) {
+	cairo_rectangle_int_t rect;
+
+	cairo_region_get_rectangle (ctx->clip_region, i, &rect);
+
+	_cairo_gl_scissor_to_rectangle (ctx->current_target, &rect);
+	_cairo_gl_composite_draw_triangles (ctx, count);
+    }
+}
+
+static void
+_cairo_gl_composite_unmap_vertex_buffer (cairo_gl_context_t *ctx)
+{
+    ctx->vb_offset = 0;
+}
+
+void
+_cairo_gl_composite_flush (cairo_gl_context_t *ctx)
+{
+    unsigned int count;
+    int i;
+
+    if (_cairo_gl_context_is_flushed (ctx))
+	return;
+
+    count = ctx->vb_offset / ctx->vertex_size;
+    _cairo_gl_composite_unmap_vertex_buffer (ctx);
+
+    if (ctx->primitive_type == CAIRO_GL_PRIMITIVE_TYPE_TRISTRIPS) {
+	_cairo_gl_composite_draw_tristrip (ctx);
+    } else {
+	assert (ctx->primitive_type == CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES);
+	_cairo_gl_composite_draw_triangles_with_clip_region (ctx, count);
+    }
+
+    for (i = 0; i < ARRAY_LENGTH (ctx->glyph_cache); i++)
+	_cairo_gl_glyph_cache_unlock (&ctx->glyph_cache[i]);
+}
+
+static void
+_cairo_gl_composite_prepare_buffer (cairo_gl_context_t *ctx,
+				    unsigned int n_vertices,
+				    cairo_gl_primitive_type_t primitive_type)
+{
+    if (ctx->primitive_type != primitive_type) {
+	_cairo_gl_composite_flush (ctx);
+	ctx->primitive_type = primitive_type;
+    }
+
+    assert(ctx->vbo_size > 0);
+    if (ctx->vb_offset + n_vertices * ctx->vertex_size > ctx->vbo_size)
+	_cairo_gl_composite_flush (ctx);
+}
+
+static inline void
+_cairo_gl_composite_emit_vertex (cairo_gl_context_t *ctx,
+				 GLfloat x, GLfloat y)
+{
+    GLfloat *vb = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];
+
+    *vb++ = x;
+    *vb++ = y;
+
+    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_SOURCE], &vb, x, y);
+    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_MASK  ], &vb, x, y);
+
+    ctx->vb_offset += ctx->vertex_size;
+}
+
+static inline void
+_cairo_gl_composite_emit_alpha_vertex (cairo_gl_context_t *ctx,
+				       GLfloat x, GLfloat y, uint8_t alpha)
+{
+    GLfloat *vb = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];
+    union fi {
+	float f;
+	GLbyte bytes[4];
+    } fi;
+
+    *vb++ = x;
+    *vb++ = y;
+
+    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_SOURCE], &vb, x, y);
+    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_MASK  ], &vb, x, y);
+
+    fi.bytes[0] = 0;
+    fi.bytes[1] = 0;
+    fi.bytes[2] = 0;
+    fi.bytes[3] = alpha;
+    *vb++ = fi.f;
+
+    ctx->vb_offset += ctx->vertex_size;
+}
+
+static void
+_cairo_gl_composite_emit_point (cairo_gl_context_t	*ctx,
+				const cairo_point_t	*point)
+{
+    _cairo_gl_composite_emit_vertex (ctx,
+				     _cairo_fixed_to_double (point->x),
+				     _cairo_fixed_to_double (point->y));
+}
+
+static void
+_cairo_gl_composite_emit_rect (cairo_gl_context_t *ctx,
+			       GLfloat x1, GLfloat y1,
+			       GLfloat x2, GLfloat y2)
+{
+    _cairo_gl_composite_prepare_buffer (ctx, 6,
+					CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES);
+
+    _cairo_gl_composite_emit_vertex (ctx, x1, y1);
+    _cairo_gl_composite_emit_vertex (ctx, x2, y1);
+    _cairo_gl_composite_emit_vertex (ctx, x1, y2);
+
+    _cairo_gl_composite_emit_vertex (ctx, x2, y1);
+    _cairo_gl_composite_emit_vertex (ctx, x2, y2);
+    _cairo_gl_composite_emit_vertex (ctx, x1, y2);
+}
+
+cairo_gl_emit_rect_t
+_cairo_gl_context_choose_emit_rect (cairo_gl_context_t *ctx)
+{
+    return _cairo_gl_composite_emit_rect;
+}
+
+void
+_cairo_gl_context_emit_rect (cairo_gl_context_t *ctx,
+			     GLfloat x1, GLfloat y1,
+			     GLfloat x2, GLfloat y2)
+{
+    _cairo_gl_composite_emit_rect (ctx, x1, y1, x2, y2);
+}
+
+static void
+_cairo_gl_composite_emit_span (cairo_gl_context_t *ctx,
+			       GLfloat x1, GLfloat y1,
+			       GLfloat x2, GLfloat y2,
+			       uint8_t alpha)
+{
+    _cairo_gl_composite_prepare_buffer (ctx, 6,
+					CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES);
+
+    _cairo_gl_composite_emit_alpha_vertex (ctx, x1, y1, alpha);
+    _cairo_gl_composite_emit_alpha_vertex (ctx, x2, y1, alpha);
+    _cairo_gl_composite_emit_alpha_vertex (ctx, x1, y2, alpha);
+
+    _cairo_gl_composite_emit_alpha_vertex (ctx, x2, y1, alpha);
+    _cairo_gl_composite_emit_alpha_vertex (ctx, x2, y2, alpha);
+    _cairo_gl_composite_emit_alpha_vertex (ctx, x1, y2, alpha);
+}
+
+static void
+_cairo_gl_composite_emit_solid_span (cairo_gl_context_t *ctx,
+				     GLfloat x1, GLfloat y1,
+				     GLfloat x2, GLfloat y2,
+				     uint8_t alpha)
+{
+    GLfloat *v;
+    union fi {
+	float f;
+	GLbyte bytes[4];
+    } fi;
+
+    _cairo_gl_composite_prepare_buffer (ctx, 6,
+					CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES);
+    v = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];
+
+    v[15] = v[ 6] = v[0] = x1;
+    v[10] = v[ 4] = v[1] = y1;
+    v[12] = v[ 9] = v[3] = x2;
+    v[16] = v[13] = v[7] = y2;
+
+    fi.bytes[0] = 0;
+    fi.bytes[1] = 0;
+    fi.bytes[2] = 0;
+    fi.bytes[3] = alpha;
+    v[17] =v[14] = v[11] = v[8] = v[5] = v[2] = fi.f;
+
+    ctx->vb_offset += 6*3 * sizeof(GLfloat);
+}
+
+cairo_gl_emit_span_t
+_cairo_gl_context_choose_emit_span (cairo_gl_context_t *ctx)
+{
+    if (ctx->operands[CAIRO_GL_TEX_MASK].type != CAIRO_GL_OPERAND_NONE) {
+	    switch (ctx->operands[CAIRO_GL_TEX_MASK].type) {
+	    default:
+	    case CAIRO_GL_OPERAND_COUNT:
+		    ASSERT_NOT_REACHED;
+	    case CAIRO_GL_OPERAND_NONE:
+	    case CAIRO_GL_OPERAND_CONSTANT:
+		    break;
+
+	    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+	    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+	    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+	    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+		    if (!ctx->operands[CAIRO_GL_TEX_MASK].gradient.texgen)
+			    return _cairo_gl_composite_emit_span;
+		    break;
+
+	    case CAIRO_GL_OPERAND_TEXTURE:
+		    if (!ctx->operands[CAIRO_GL_TEX_MASK].texture.texgen)
+			    return _cairo_gl_composite_emit_span;
+		    break;
+	    }
+    }
+
+    switch (ctx->operands[CAIRO_GL_TEX_SOURCE].type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+	break;
+
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	if (!ctx->operands[CAIRO_GL_TEX_SOURCE].gradient.texgen)
+		return _cairo_gl_composite_emit_span;
+	break;
+
+    case CAIRO_GL_OPERAND_TEXTURE:
+	if (!ctx->operands[CAIRO_GL_TEX_SOURCE].texture.texgen)
+		return _cairo_gl_composite_emit_span;
+    }
+
+    return _cairo_gl_composite_emit_solid_span;
+}
+
+static inline void
+_cairo_gl_composite_emit_glyph_vertex (cairo_gl_context_t *ctx,
+				       GLfloat x, GLfloat y,
+				       GLfloat glyph_x, GLfloat glyph_y)
+{
+    GLfloat *vb = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];
+
+    *vb++ = x;
+    *vb++ = y;
+
+    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_SOURCE], &vb, x, y);
+
+    *vb++ = glyph_x;
+    *vb++ = glyph_y;
+
+    ctx->vb_offset += ctx->vertex_size;
+}
+
+static void
+_cairo_gl_composite_emit_glyph (cairo_gl_context_t *ctx,
+				GLfloat x1, GLfloat y1,
+				GLfloat x2, GLfloat y2,
+				GLfloat glyph_x1, GLfloat glyph_y1,
+				GLfloat glyph_x2, GLfloat glyph_y2)
+{
+    _cairo_gl_composite_prepare_buffer (ctx, 6,
+					CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES);
+
+    _cairo_gl_composite_emit_glyph_vertex (ctx, x1, y1, glyph_x1, glyph_y1);
+    _cairo_gl_composite_emit_glyph_vertex (ctx, x2, y1, glyph_x2, glyph_y1);
+    _cairo_gl_composite_emit_glyph_vertex (ctx, x1, y2, glyph_x1, glyph_y2);
+
+    _cairo_gl_composite_emit_glyph_vertex (ctx, x2, y1, glyph_x2, glyph_y1);
+    _cairo_gl_composite_emit_glyph_vertex (ctx, x2, y2, glyph_x2, glyph_y2);
+    _cairo_gl_composite_emit_glyph_vertex (ctx, x1, y2, glyph_x1, glyph_y2);
+}
+
+static void
+_cairo_gl_composite_emit_solid_glyph (cairo_gl_context_t *ctx,
+				      GLfloat x1, GLfloat y1,
+				      GLfloat x2, GLfloat y2,
+				      GLfloat glyph_x1, GLfloat glyph_y1,
+				      GLfloat glyph_x2, GLfloat glyph_y2)
+{
+    GLfloat *v;
+
+    _cairo_gl_composite_prepare_buffer (ctx, 6,
+					CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES);
+
+    v = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];
+
+    v[20] = v[ 8] = v[0] = x1;
+    v[13] = v[ 5] = v[1] = y1;
+    v[22] = v[10] = v[2] = glyph_x1;
+    v[15] = v[ 7] = v[3] = glyph_y1;
+
+    v[16] = v[12] = v[4] = x2;
+    v[18] = v[14] = v[6] = glyph_x2;
+
+    v[21] = v[17] = v[ 9] = y2;
+    v[23] = v[19] = v[11] = glyph_y2;
+
+    ctx->vb_offset += 4 * 6 * sizeof (GLfloat);
+}
+
+cairo_gl_emit_glyph_t
+_cairo_gl_context_choose_emit_glyph (cairo_gl_context_t *ctx)
+{
+    switch (ctx->operands[CAIRO_GL_TEX_SOURCE].type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+	return _cairo_gl_composite_emit_solid_glyph;
+
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+    case CAIRO_GL_OPERAND_TEXTURE:
+	return _cairo_gl_composite_emit_glyph;
+    }
+}
+
+void
+_cairo_gl_composite_fini (cairo_gl_composite_t *setup)
+{
+    _cairo_gl_operand_destroy (&setup->src);
+    _cairo_gl_operand_destroy (&setup->mask);
+}
+
+cairo_status_t
+_cairo_gl_composite_set_operator (cairo_gl_composite_t *setup,
+				  cairo_operator_t op,
+				  cairo_bool_t assume_component_alpha)
+{
+    if (assume_component_alpha) {
+	if (op != CAIRO_OPERATOR_CLEAR &&
+	    op != CAIRO_OPERATOR_OVER &&
+	    op != CAIRO_OPERATOR_ADD)
+	    return UNSUPPORTED ("unsupported component alpha operator");
+    } else {
+	if (! _cairo_gl_operator_is_supported (op))
+	    return UNSUPPORTED ("unsupported operator");
+    }
+
+    setup->op = op;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gl_composite_init (cairo_gl_composite_t *setup,
+			  cairo_operator_t op,
+			  cairo_gl_surface_t *dst,
+			  cairo_bool_t assume_component_alpha)
+{
+    cairo_status_t status;
+
+    status = _blit_texture_to_renderbuffer (dst);
+
+    memset (setup, 0, sizeof (cairo_gl_composite_t));
+
+    status = _cairo_gl_composite_set_operator (setup, op,
+					       assume_component_alpha);
+    if (status)
+	return status;
+
+    setup->dst = dst;
+    setup->clip_region = dst->clip_region;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_gl_composite_append_vertex_indices (cairo_gl_context_t	*ctx,
+					   int			 number_of_new_indices)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+    cairo_array_t *indices = &ctx->tristrip_indices;
+    int number_of_indices = _cairo_array_num_elements (indices);
+    unsigned short current_vertex_index = 0;
+    int i;
+
+    assert (number_of_new_indices > 0);
+
+    /* If any preexisting triangle triangle strip indices exist on this
+       context, we insert a set of degenerate triangles from the last
+       preexisting vertex to our first one. */
+    if (number_of_indices > 0) {
+	const unsigned short *indices_array = _cairo_array_index_const (indices, 0);
+	current_vertex_index = indices_array[number_of_indices - 1];
+
+	status = _cairo_array_append (indices, &current_vertex_index);
+	if (unlikely (status))
+	    return status;
+
+	current_vertex_index++;
+	status =_cairo_array_append (indices, &current_vertex_index);
+	if (unlikely (status))
+	    return status;
+    }
+
+    for (i = 0; i < number_of_new_indices; i++) {
+	status = _cairo_array_append (indices, &current_vertex_index);
+	current_vertex_index++;
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_gl_composite_emit_quad_as_tristrip (cairo_gl_context_t	*ctx,
+					   cairo_gl_composite_t	*setup,
+					   const cairo_point_t	quad[4])
+{
+    _cairo_gl_composite_prepare_buffer (ctx, 4,
+					CAIRO_GL_PRIMITIVE_TYPE_TRISTRIPS);
+
+    _cairo_gl_composite_emit_point (ctx, &quad[0]);
+    _cairo_gl_composite_emit_point (ctx, &quad[1]);
+
+    /* Cairo stores quad vertices in counter-clockwise order, but we need to
+       emit them from top to bottom in the triangle strip, so we need to reverse
+       the order of the last two vertices. */
+    _cairo_gl_composite_emit_point (ctx, &quad[3]);
+    _cairo_gl_composite_emit_point (ctx, &quad[2]);
+
+    return _cairo_gl_composite_append_vertex_indices (ctx, 4);
+}
+
+cairo_int_status_t
+_cairo_gl_composite_emit_triangle_as_tristrip (cairo_gl_context_t	*ctx,
+					       cairo_gl_composite_t	*setup,
+					       const cairo_point_t	 triangle[3])
+{
+    _cairo_gl_composite_prepare_buffer (ctx, 3,
+					CAIRO_GL_PRIMITIVE_TYPE_TRISTRIPS);
+
+    _cairo_gl_composite_emit_point (ctx, &triangle[0]);
+    _cairo_gl_composite_emit_point (ctx, &triangle[1]);
+    _cairo_gl_composite_emit_point (ctx, &triangle[2]);
+    return _cairo_gl_composite_append_vertex_indices (ctx, 3);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-device.c b/libs/cairo-1.16.0/src/cairo-gl-device.c
new file mode 100644
index 0000000..258b4c5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-device.c
@@ -0,0 +1,851 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 2010 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ *	Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-gl-private.h"
+
+#define MAX_MSAA_SAMPLES 4
+
+static void
+_gl_lock (void *device)
+{
+    cairo_gl_context_t *ctx = (cairo_gl_context_t *) device;
+
+    ctx->acquire (ctx);
+}
+
+static void
+_gl_unlock (void *device)
+{
+    cairo_gl_context_t *ctx = (cairo_gl_context_t *) device;
+
+    ctx->release (ctx);
+}
+
+static cairo_status_t
+_gl_flush (void *device)
+{
+    cairo_gl_context_t *ctx;
+    cairo_status_t status;
+
+    status = _cairo_gl_context_acquire (device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gl_composite_flush (ctx);
+
+    _cairo_gl_context_destroy_operand (ctx, CAIRO_GL_TEX_SOURCE);
+    _cairo_gl_context_destroy_operand (ctx, CAIRO_GL_TEX_MASK);
+
+    if (ctx->clip_region) {
+	cairo_region_destroy (ctx->clip_region);
+	ctx->clip_region = NULL;
+    }
+
+    ctx->current_target = NULL;
+    ctx->current_operator = -1;
+    ctx->vertex_size = 0;
+    ctx->pre_shader = NULL;
+    _cairo_gl_set_shader (ctx, NULL);
+
+    ctx->dispatch.BindBuffer (GL_ARRAY_BUFFER, 0);
+
+    glDisable (GL_SCISSOR_TEST);
+    glDisable (GL_BLEND);
+
+    return _cairo_gl_context_release (ctx, status);
+}
+
+static void
+_gl_finish (void *device)
+{
+    cairo_gl_context_t *ctx = device;
+    int n;
+
+    _gl_lock (device);
+
+    _cairo_cache_fini (&ctx->gradients);
+
+    _cairo_gl_context_fini_shaders (ctx);
+
+    for (n = 0; n < ARRAY_LENGTH (ctx->glyph_cache); n++)
+	_cairo_gl_glyph_cache_fini (ctx, &ctx->glyph_cache[n]);
+
+    _gl_unlock (device);
+}
+
+static void
+_gl_destroy (void *device)
+{
+    cairo_gl_context_t *ctx = device;
+
+    ctx->acquire (ctx);
+
+    while (! cairo_list_is_empty (&ctx->fonts)) {
+	cairo_gl_font_t *font;
+
+	font = cairo_list_first_entry (&ctx->fonts,
+				       cairo_gl_font_t,
+				       link);
+
+	cairo_list_del (&font->base.link);
+	cairo_list_del (&font->link);
+	free (font);
+    }
+
+    _cairo_array_fini (&ctx->tristrip_indices);
+
+    cairo_region_destroy (ctx->clip_region);
+    _cairo_clip_destroy (ctx->clip);
+
+    free (ctx->vb);
+
+    ctx->destroy (ctx);
+
+    free (ctx);
+}
+
+static const cairo_device_backend_t _cairo_gl_device_backend = {
+    CAIRO_DEVICE_TYPE_GL,
+
+    _gl_lock,
+    _gl_unlock,
+
+    _gl_flush, /* flush */
+    _gl_finish,
+    _gl_destroy,
+};
+
+static cairo_bool_t
+_cairo_gl_msaa_compositor_enabled (void)
+{
+    const char *env = getenv ("CAIRO_GL_COMPOSITOR");
+    return env && strcmp(env, "msaa") == 0;
+}
+
+static cairo_bool_t
+test_can_read_bgra (cairo_gl_flavor_t gl_flavor)
+{
+    /* Desktop GL always supports BGRA formats. */
+    if (gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+	return TRUE;
+
+    assert (gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	    gl_flavor == CAIRO_GL_FLAVOR_ES2);
+
+   /* For OpenGL ES we have to look for the specific extension and BGRA only
+    * matches cairo's integer packed bytes on little-endian machines. */
+    if (!_cairo_is_little_endian())
+	return FALSE;
+    return _cairo_gl_has_extension ("EXT_read_format_bgra");
+}
+
+cairo_status_t
+_cairo_gl_context_init (cairo_gl_context_t *ctx)
+{
+    cairo_status_t status;
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    int gl_version = _cairo_gl_get_version ();
+    cairo_gl_flavor_t gl_flavor = _cairo_gl_get_flavor ();
+    int n;
+
+    cairo_bool_t is_desktop = gl_flavor == CAIRO_GL_FLAVOR_DESKTOP;
+    cairo_bool_t is_gles = (gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+			    gl_flavor == CAIRO_GL_FLAVOR_ES2);
+
+    _cairo_device_init (&ctx->base, &_cairo_gl_device_backend);
+
+    /* XXX The choice of compositor should be made automatically at runtime.
+     * However, it is useful to force one particular compositor whilst
+     * testing.
+     */
+     if (_cairo_gl_msaa_compositor_enabled ())
+	ctx->compositor = _cairo_gl_msaa_compositor_get ();
+    else
+	ctx->compositor = _cairo_gl_span_compositor_get ();
+
+
+    ctx->thread_aware = TRUE;
+
+    memset (ctx->glyph_cache, 0, sizeof (ctx->glyph_cache));
+    cairo_list_init (&ctx->fonts);
+
+    /* Support only GL version >= 1.3 */
+    if (gl_version < CAIRO_GL_VERSION_ENCODE (1, 3))
+	return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+    /* Check for required extensions */
+    if (is_desktop) {
+	if (_cairo_gl_has_extension ("GL_ARB_texture_non_power_of_two")) {
+	    ctx->tex_target = GL_TEXTURE_2D;
+	    ctx->has_npot_repeat = TRUE;
+	} else if (_cairo_gl_has_extension ("GL_ARB_texture_rectangle")) {
+	    ctx->tex_target = GL_TEXTURE_RECTANGLE;
+	    ctx->has_npot_repeat = FALSE;
+	} else
+	    return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+    } else {
+	ctx->tex_target = GL_TEXTURE_2D;
+	if (_cairo_gl_has_extension ("GL_OES_texture_npot") ||
+	    _cairo_gl_has_extension ("GL_IMG_texture_npot"))
+	    ctx->has_npot_repeat = TRUE;
+	else
+	    ctx->has_npot_repeat = FALSE;
+    }
+
+    if (is_desktop && gl_version < CAIRO_GL_VERSION_ENCODE (2, 1) &&
+	! _cairo_gl_has_extension ("GL_ARB_pixel_buffer_object"))
+	return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+    if (is_gles && ! _cairo_gl_has_extension ("GL_EXT_texture_format_BGRA8888"))
+	return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+    ctx->has_map_buffer =
+	is_desktop || (is_gles && _cairo_gl_has_extension ("GL_OES_mapbuffer"));
+
+    ctx->can_read_bgra = test_can_read_bgra (gl_flavor);
+
+    ctx->has_mesa_pack_invert =
+	_cairo_gl_has_extension ("GL_MESA_pack_invert");
+
+    ctx->has_packed_depth_stencil =
+	(is_desktop && _cairo_gl_has_extension ("GL_EXT_packed_depth_stencil")) ||
+	(is_gles && _cairo_gl_has_extension ("GL_OES_packed_depth_stencil"));
+
+    ctx->num_samples = 1;
+
+#if CAIRO_HAS_GL_SURFACE
+    if (is_desktop && ctx->has_packed_depth_stencil &&
+	(gl_version >= CAIRO_GL_VERSION_ENCODE (3, 0) ||
+	 _cairo_gl_has_extension ("GL_ARB_framebuffer_object") ||
+	 (_cairo_gl_has_extension ("GL_EXT_framebuffer_blit") &&
+	  _cairo_gl_has_extension ("GL_EXT_framebuffer_multisample")))) {
+	glGetIntegerv(GL_MAX_SAMPLES_EXT, &ctx->num_samples);
+    }
+#endif
+
+#if CAIRO_HAS_GLESV3_SURFACE
+    if (is_gles && ctx->has_packed_depth_stencil) {
+	glGetIntegerv(GL_MAX_SAMPLES, &ctx->num_samples);
+    }
+
+#elif CAIRO_HAS_GLESV2_SURFACE && defined(GL_MAX_SAMPLES_EXT)
+    if (is_gles && ctx->has_packed_depth_stencil &&
+	_cairo_gl_has_extension ("GL_EXT_multisampled_render_to_texture")) {
+	glGetIntegerv(GL_MAX_SAMPLES_EXT, &ctx->num_samples);
+    }
+
+    if (is_gles && ctx->has_packed_depth_stencil &&
+	_cairo_gl_has_extension ("GL_IMG_multisampled_render_to_texture")) {
+	glGetIntegerv(GL_MAX_SAMPLES_IMG, &ctx->num_samples);
+    }
+#endif
+
+    /* we always use renderbuffer for rendering in glesv3 */
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	ctx->supports_msaa = TRUE;
+    else
+	ctx->supports_msaa = ctx->num_samples > 1;
+    if (ctx->num_samples > MAX_MSAA_SAMPLES)
+	ctx->num_samples = MAX_MSAA_SAMPLES;
+
+    ctx->current_operator = -1;
+    ctx->gl_flavor = gl_flavor;
+
+    status = _cairo_gl_context_init_shaders (ctx);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_cache_init (&ctx->gradients,
+				_cairo_gl_gradient_equal,
+				NULL,
+				(cairo_destroy_func_t) _cairo_gl_gradient_destroy,
+				CAIRO_GL_GRADIENT_CACHE_SIZE);
+    if (unlikely (status))
+	return status;
+
+    ctx->vbo_size = _cairo_gl_get_vbo_size();
+
+    ctx->vb = _cairo_malloc (ctx->vbo_size);
+    if (unlikely (ctx->vb == NULL)) {
+	    _cairo_cache_fini (&ctx->gradients);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    ctx->primitive_type = CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES;
+    _cairo_array_init (&ctx->tristrip_indices, sizeof (unsigned short));
+
+    /* PBO for any sort of texture upload */
+    dispatch->GenBuffers (1, &ctx->texture_load_pbo);
+
+    ctx->max_framebuffer_size = 0;
+    glGetIntegerv (GL_MAX_RENDERBUFFER_SIZE, &ctx->max_framebuffer_size);
+    ctx->max_texture_size = 0;
+    glGetIntegerv (GL_MAX_TEXTURE_SIZE, &ctx->max_texture_size);
+    ctx->max_textures = 0;
+    glGetIntegerv (GL_MAX_TEXTURE_IMAGE_UNITS, &ctx->max_textures);
+
+    for (n = 0; n < ARRAY_LENGTH (ctx->glyph_cache); n++)
+	_cairo_gl_glyph_cache_init (&ctx->glyph_cache[n]);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gl_context_activate (cairo_gl_context_t *ctx,
+			    cairo_gl_tex_t      tex_unit)
+{
+    if (ctx->max_textures <= (GLint) tex_unit) {
+	if (tex_unit < 2) {
+	    _cairo_gl_composite_flush (ctx);
+	    _cairo_gl_context_destroy_operand (ctx, ctx->max_textures - 1);
+	}
+	glActiveTexture (ctx->max_textures - 1);
+    } else {
+	glActiveTexture (GL_TEXTURE0 + tex_unit);
+    }
+}
+
+static GLenum
+_get_depth_stencil_format (cairo_gl_context_t *ctx)
+{
+    /* This is necessary to properly handle the situation where both
+       OpenGL and OpenGLES are active and returning a sane default. */
+#if CAIRO_HAS_GL_SURFACE
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+	return GL_DEPTH_STENCIL;
+#endif
+
+#if CAIRO_HAS_GLESV2_SURFACE && !CAIRO_HAS_GLESV3_SURFACE
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+	return GL_DEPTH24_STENCIL8_OES;
+#endif
+
+#if CAIRO_HAS_GL_SURFACE
+    return GL_DEPTH_STENCIL;
+#elif CAIRO_HAS_GLESV3_SURFACE
+    return GL_DEPTH24_STENCIL8;
+#elif CAIRO_HAS_GLESV2_SURFACE
+    return GL_DEPTH24_STENCIL8_OES;
+#endif
+}
+
+#if CAIRO_HAS_GLESV2_SURFACE
+static void
+_cairo_gl_ensure_msaa_gles_framebuffer (cairo_gl_context_t *ctx,
+					cairo_gl_surface_t *surface)
+{
+    if (surface->msaa_active)
+	return;
+
+    ctx->dispatch.FramebufferTexture2DMultisample(GL_FRAMEBUFFER,
+						  GL_COLOR_ATTACHMENT0,
+						  ctx->tex_target,
+						  surface->tex,
+						  0,
+						  ctx->num_samples);
+
+    /* From now on MSAA will always be active on this surface. */
+    surface->msaa_active = TRUE;
+}
+#endif
+
+void
+_cairo_gl_ensure_framebuffer (cairo_gl_context_t *ctx,
+			      cairo_gl_surface_t *surface)
+{
+    GLenum status;
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+
+    if (likely (surface->fb))
+	return;
+
+    /* Create a framebuffer object wrapping the texture so that we can render
+     * to it.
+     */
+    dispatch->GenFramebuffers (1, &surface->fb);
+    dispatch->BindFramebuffer (GL_FRAMEBUFFER, surface->fb);
+
+    /* Unlike for desktop GL we only maintain one multisampling framebuffer
+       for OpenGLES since the EXT_multisampled_render_to_texture extension
+       does not require an explicit multisample resolution. */
+#if CAIRO_HAS_GLESV2_SURFACE
+    if (surface->supports_msaa && _cairo_gl_msaa_compositor_enabled () &&
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) {
+	_cairo_gl_ensure_msaa_gles_framebuffer (ctx, surface);
+    } else
+#endif
+	dispatch->FramebufferTexture2D (GL_FRAMEBUFFER,
+					GL_COLOR_ATTACHMENT0,
+					ctx->tex_target,
+					surface->tex,
+					0);
+
+#if CAIRO_HAS_GL_SURFACE
+    glDrawBuffer (GL_COLOR_ATTACHMENT0);
+    glReadBuffer (GL_COLOR_ATTACHMENT0);
+#endif
+
+    status = dispatch->CheckFramebufferStatus (GL_FRAMEBUFFER);
+    if (status != GL_FRAMEBUFFER_COMPLETE) {
+	const char *str;
+	switch (status) {
+	//case GL_FRAMEBUFFER_UNDEFINED: str= "undefined"; break;
+	case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: str= "incomplete attachment"; break;
+	case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: str= "incomplete/missing attachment"; break;
+	case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER: str= "incomplete draw buffer"; break;
+	case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER: str= "incomplete read buffer"; break;
+	case GL_FRAMEBUFFER_UNSUPPORTED: str= "unsupported"; break;
+	case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: str= "incomplete multiple"; break;
+	default: str = "unknown error"; break;
+	}
+
+	fprintf (stderr,
+		 "destination is framebuffer incomplete: %s [%#x]\n",
+		 str, status);
+    }
+}
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+static void
+_cairo_gl_ensure_multisampling (cairo_gl_context_t *ctx,
+				cairo_gl_surface_t *surface)
+{
+    assert (surface->supports_msaa);
+    assert (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3);
+
+    if (surface->msaa_fb)
+	return;
+
+    /* We maintain a separate framebuffer for multisampling operations.
+       This allows us to do a fast paint to the non-multisampling framebuffer
+       when mulitsampling is disabled. */
+    ctx->dispatch.GenFramebuffers (1, &surface->msaa_fb);
+    ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->msaa_fb);
+    ctx->dispatch.GenRenderbuffers (1, &surface->msaa_rb);
+    ctx->dispatch.BindRenderbuffer (GL_RENDERBUFFER, surface->msaa_rb);
+
+    /* FIXME: For now we assume that textures passed from the outside have GL_RGBA
+       format, but eventually we need to expose a way for the API consumer to pass
+       this information. */
+    ctx->dispatch.RenderbufferStorageMultisample (GL_RENDERBUFFER,
+						  ctx->num_samples,
+#if CAIRO_HAS_GLESV3_SURFACE
+						  GL_RGBA8,
+#else
+						  GL_RGBA,
+#endif
+						  surface->width,
+						  surface->height);
+    ctx->dispatch.FramebufferRenderbuffer (GL_FRAMEBUFFER,
+					   GL_COLOR_ATTACHMENT0,
+					   GL_RENDERBUFFER,
+					   surface->msaa_rb);
+
+    /* Cairo surfaces start out initialized to transparent (black) */
+    glDisable (GL_SCISSOR_TEST);
+    glClearColor (0, 0, 0, 0);
+    glClear (GL_COLOR_BUFFER_BIT);
+
+    /* for glesv3 with multisample renderbuffer, we always render to
+       this renderbuffer */
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	surface->msaa_active = TRUE;
+}
+#endif
+
+static cairo_bool_t
+_cairo_gl_ensure_msaa_depth_stencil_buffer (cairo_gl_context_t *ctx,
+					    cairo_gl_surface_t *surface)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    if (surface->msaa_depth_stencil)
+	return TRUE;
+
+    _cairo_gl_ensure_framebuffer (ctx, surface);
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	_cairo_gl_ensure_multisampling (ctx, surface);
+#endif
+
+    dispatch->GenRenderbuffers (1, &surface->msaa_depth_stencil);
+    dispatch->BindRenderbuffer (GL_RENDERBUFFER,
+				surface->msaa_depth_stencil);
+
+    dispatch->RenderbufferStorageMultisample (GL_RENDERBUFFER,
+					      ctx->num_samples,
+					      _get_depth_stencil_format (ctx),
+					      surface->width,
+					      surface->height);
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3) {
+	dispatch->FramebufferRenderbuffer (GL_FRAMEBUFFER,
+					   GL_DEPTH_STENCIL_ATTACHMENT,
+					   GL_RENDERBUFFER,
+					   surface->msaa_depth_stencil);
+    }
+#endif
+
+#if CAIRO_HAS_GLESV2_SURFACE
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) {
+	dispatch->FramebufferRenderbuffer (GL_FRAMEBUFFER,
+					   GL_DEPTH_ATTACHMENT,
+					   GL_RENDERBUFFER,
+					   surface->msaa_depth_stencil);
+	dispatch->FramebufferRenderbuffer (GL_FRAMEBUFFER,
+					   GL_STENCIL_ATTACHMENT,
+					   GL_RENDERBUFFER,
+					   surface->msaa_depth_stencil);
+    }
+#endif
+
+    if (dispatch->CheckFramebufferStatus (GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+	dispatch->DeleteRenderbuffers (1, &surface->msaa_depth_stencil);
+	surface->msaa_depth_stencil = 0;
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+static cairo_bool_t
+_cairo_gl_ensure_depth_stencil_buffer (cairo_gl_context_t *ctx,
+				       cairo_gl_surface_t *surface)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+
+    if (surface->depth_stencil)
+	return TRUE;
+
+    _cairo_gl_ensure_framebuffer (ctx, surface);
+
+    dispatch->GenRenderbuffers (1, &surface->depth_stencil);
+    dispatch->BindRenderbuffer (GL_RENDERBUFFER, surface->depth_stencil);
+    dispatch->RenderbufferStorage (GL_RENDERBUFFER,
+				   _get_depth_stencil_format (ctx),
+				   surface->width, surface->height);
+
+    dispatch->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
+				       GL_RENDERBUFFER, surface->depth_stencil);
+    dispatch->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
+				       GL_RENDERBUFFER, surface->depth_stencil);
+    if (dispatch->CheckFramebufferStatus (GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+	dispatch->DeleteRenderbuffers (1, &surface->depth_stencil);
+	surface->depth_stencil = 0;
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_gl_ensure_stencil (cairo_gl_context_t *ctx,
+			  cairo_gl_surface_t *surface)
+{
+    if (! _cairo_gl_surface_is_texture (surface))
+	return TRUE; /* best guess for now, will check later */
+    if (! ctx->has_packed_depth_stencil)
+	return FALSE;
+
+    if (surface->msaa_active)
+	return _cairo_gl_ensure_msaa_depth_stencil_buffer (ctx, surface);
+    else
+	return _cairo_gl_ensure_depth_stencil_buffer (ctx, surface);
+}
+
+/*
+ * Stores a parallel projection transformation in matrix 'm',
+ * using column-major order.
+ *
+ * This is equivalent to:
+ *
+ * glLoadIdentity()
+ * gluOrtho2D()
+ *
+ * The calculation for the ortho tranformation was taken from the
+ * mesa source code.
+ */
+static void
+_gl_identity_ortho (GLfloat *m,
+		    GLfloat left, GLfloat right,
+		    GLfloat bottom, GLfloat top)
+{
+#define M(row,col)  m[col*4+row]
+    M(0,0) = 2.f / (right - left);
+    M(0,1) = 0.f;
+    M(0,2) = 0.f;
+    M(0,3) = -(right + left) / (right - left);
+
+    M(1,0) = 0.f;
+    M(1,1) = 2.f / (top - bottom);
+    M(1,2) = 0.f;
+    M(1,3) = -(top + bottom) / (top - bottom);
+
+    M(2,0) = 0.f;
+    M(2,1) = 0.f;
+    M(2,2) = -1.f;
+    M(2,3) = 0.f;
+
+    M(3,0) = 0.f;
+    M(3,1) = 0.f;
+    M(3,2) = 0.f;
+    M(3,3) = 1.f;
+#undef M
+}
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+static void
+bind_multisample_framebuffer (cairo_gl_context_t *ctx,
+			       cairo_gl_surface_t *surface)
+{
+    cairo_bool_t stencil_test_enabled;
+    cairo_bool_t scissor_test_enabled;
+
+    assert (surface->supports_msaa);
+    assert (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3);
+
+    _cairo_gl_ensure_framebuffer (ctx, surface);
+    _cairo_gl_ensure_multisampling (ctx, surface);
+
+    if (surface->msaa_active) {
+#if CAIRO_HAS_GL_SURFACE
+	glEnable (GL_MULTISAMPLE);
+#endif
+	ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->msaa_fb);
+	if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	    surface->content_in_texture = FALSE;
+	return;
+    }
+
+    _cairo_gl_composite_flush (ctx);
+
+    stencil_test_enabled = glIsEnabled (GL_STENCIL_TEST);
+    scissor_test_enabled = glIsEnabled (GL_SCISSOR_TEST);
+    glDisable (GL_STENCIL_TEST);
+    glDisable (GL_SCISSOR_TEST);
+
+#if CAIRO_HAS_GL_SURFACE
+    glEnable (GL_MULTISAMPLE);
+#endif
+
+    /* The last time we drew to the surface, we were not using multisampling,
+       so we need to blit from the non-multisampling framebuffer into the
+       multisampling framebuffer. */
+    ctx->dispatch.BindFramebuffer (GL_DRAW_FRAMEBUFFER, surface->msaa_fb);
+    ctx->dispatch.BindFramebuffer (GL_READ_FRAMEBUFFER, surface->fb);
+    ctx->dispatch.BlitFramebuffer (0, 0, surface->width, surface->height,
+				   0, 0, surface->width, surface->height,
+				   GL_COLOR_BUFFER_BIT
+#if CAIRO_HAS_GL_SURFACE
+				   | GL_STENCIL_BUFFER_BIT
+#endif
+				   ,
+				   GL_NEAREST);
+    ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->msaa_fb);
+
+    if (stencil_test_enabled)
+	glEnable (GL_STENCIL_TEST);
+    if (scissor_test_enabled)
+	glEnable (GL_SCISSOR_TEST);
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	surface->content_in_texture = FALSE;
+}
+#endif
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+static void
+bind_singlesample_framebuffer (cairo_gl_context_t *ctx,
+			       cairo_gl_surface_t *surface)
+{
+    cairo_bool_t stencil_test_enabled;
+    cairo_bool_t scissor_test_enabled;
+
+    assert (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3);
+    _cairo_gl_ensure_framebuffer (ctx, surface);
+
+    if (! surface->msaa_active) {
+#if CAIRO_HAS_GL_SURFACE
+	glDisable (GL_MULTISAMPLE);
+#endif
+
+	ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->fb);
+	return;
+    }
+
+    _cairo_gl_composite_flush (ctx);
+
+    stencil_test_enabled = glIsEnabled (GL_STENCIL_TEST);
+    scissor_test_enabled = glIsEnabled (GL_SCISSOR_TEST);
+    glDisable (GL_STENCIL_TEST);
+    glDisable (GL_SCISSOR_TEST);
+
+#if CAIRO_HAS_GL_SURFACE
+    glDisable (GL_MULTISAMPLE);
+#endif
+
+    /* The last time we drew to the surface, we were using multisampling,
+       so we need to blit from the multisampling framebuffer into the
+       non-multisampling framebuffer. */
+    ctx->dispatch.BindFramebuffer (GL_DRAW_FRAMEBUFFER, surface->fb);
+    ctx->dispatch.BindFramebuffer (GL_READ_FRAMEBUFFER, surface->msaa_fb);
+    ctx->dispatch.BlitFramebuffer (0, 0, surface->width, surface->height,
+				   0, 0, surface->width, surface->height,
+				   GL_COLOR_BUFFER_BIT, GL_NEAREST);
+    ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->fb);
+
+    if (stencil_test_enabled)
+	glEnable (GL_STENCIL_TEST);
+    if (scissor_test_enabled)
+	glEnable (GL_SCISSOR_TEST);
+}
+#endif
+
+void
+_cairo_gl_context_bind_framebuffer (cairo_gl_context_t *ctx,
+				    cairo_gl_surface_t *surface,
+				    cairo_bool_t multisampling)
+{
+    if (_cairo_gl_surface_is_texture (surface)) {
+	/* OpenGL ES surfaces only have either a multisample framebuffer or a
+	 * singlesample framebuffer, so we cannot switch back and forth. */
+	if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) {
+	    _cairo_gl_ensure_framebuffer (ctx, surface);
+	    ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->fb);
+	    return;
+	}
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+	if (multisampling)
+	    bind_multisample_framebuffer (ctx, surface);
+	else
+	    bind_singlesample_framebuffer (ctx, surface);
+#endif
+    } else {
+	ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, 0);
+
+#if CAIRO_HAS_GL_SURFACE
+	if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP) {
+	    if (multisampling)
+		glEnable (GL_MULTISAMPLE);
+	    else
+		glDisable (GL_MULTISAMPLE);
+	}
+#endif
+    }
+
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+	surface->msaa_active = multisampling;
+}
+
+void
+_cairo_gl_context_set_destination (cairo_gl_context_t *ctx,
+				   cairo_gl_surface_t *surface,
+				   cairo_bool_t multisampling)
+{
+    cairo_bool_t changing_surface, changing_sampling;
+
+    /* The decision whether or not to use multisampling happens when
+     * we create an OpenGL ES surface, so we can never switch modes. */
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2)
+	multisampling = surface->msaa_active;
+    /* For GLESV3, we always use renderbuffer for drawing */
+    else if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	multisampling = TRUE;
+
+    changing_surface = ctx->current_target != surface || surface->needs_update;
+    changing_sampling = (surface->msaa_active != multisampling ||
+			 surface->content_in_texture);
+    if (! changing_surface && ! changing_sampling)
+	return;
+
+    if (! changing_surface) {
+	_cairo_gl_composite_flush (ctx);
+	_cairo_gl_context_bind_framebuffer (ctx, surface, multisampling);
+	return;
+    }
+
+    _cairo_gl_composite_flush (ctx);
+
+    ctx->current_target = surface;
+    surface->needs_update = FALSE;
+
+    if (! _cairo_gl_surface_is_texture (surface)) {
+	ctx->make_current (ctx, surface);
+    }
+
+    _cairo_gl_context_bind_framebuffer (ctx, surface, multisampling);
+
+    if (! _cairo_gl_surface_is_texture (surface)) {
+#if CAIRO_HAS_GL_SURFACE
+	glDrawBuffer (GL_BACK_LEFT);
+	glReadBuffer (GL_BACK_LEFT);
+#endif
+    }
+
+    glDisable (GL_DITHER);
+    glViewport (0, 0, surface->width, surface->height);
+
+    if (_cairo_gl_surface_is_texture (surface))
+	_gl_identity_ortho (ctx->modelviewprojection_matrix,
+			    0, surface->width, 0, surface->height);
+    else
+	_gl_identity_ortho (ctx->modelviewprojection_matrix,
+			    0, surface->width, surface->height, 0);
+}
+
+void
+cairo_gl_device_set_thread_aware (cairo_device_t	*device,
+				  cairo_bool_t		 thread_aware)
+{
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL) {
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	return;
+    }
+    ((cairo_gl_context_t *) device)->thread_aware = thread_aware;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-dispatch-private.h b/libs/cairo-1.16.0/src/cairo-gl-dispatch-private.h
new file mode 100644
index 0000000..cabf76f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-dispatch-private.h
@@ -0,0 +1,129 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#ifndef CAIRO_GL_DISPATCH_PRIVATE_H
+#define CAIRO_GL_DISPATCH_PRIVATE_H
+
+#include "cairo-gl-private.h"
+#include <stddef.h>
+
+typedef enum _cairo_gl_dispatch_name {
+    CAIRO_GL_DISPATCH_NAME_CORE,
+    CAIRO_GL_DISPATCH_NAME_EXT,
+    CAIRO_GL_DISPATCH_NAME_ES,
+    CAIRO_GL_DISPATCH_NAME_COUNT
+} cairo_gl_dispatch_name_t;
+
+typedef struct _cairo_gl_dispatch_entry {
+    const char *name[CAIRO_GL_DISPATCH_NAME_COUNT];
+    size_t offset;
+} cairo_gl_dispatch_entry_t;
+
+#define DISPATCH_ENTRY_ARB(name) { { "gl"#name, "gl"#name"ARB", "gl"#name }, \
+				   offsetof(cairo_gl_dispatch_t, name) }
+#define DISPATCH_ENTRY_EXT(name) { { "gl"#name, "gl"#name"EXT", "gl"#name }, \
+				   offsetof(cairo_gl_dispatch_t, name) }
+#define DISPATCH_ENTRY_ARB_OES(name) { { "gl"#name, "gl"#name"ARB", "gl"#name"OES" }, \
+				       offsetof(cairo_gl_dispatch_t, name) }
+#define DISPATCH_ENTRY_EXT_IMG(name) { { "gl"#name, "gl"#name"EXT", "gl"#name"IMG" }, \
+				       offsetof(cairo_gl_dispatch_t, name) }
+#define DISPATCH_ENTRY_CUSTOM(name, name2) { { "gl"#name, "gl"#name2, "gl"#name }, \
+			                     offsetof(cairo_gl_dispatch_t, name)}
+#define DISPATCH_ENTRY_LAST { { NULL, NULL, NULL }, 0 }
+
+cairo_private cairo_gl_dispatch_entry_t dispatch_buffers_entries[] = {
+    DISPATCH_ENTRY_ARB     (GenBuffers),
+    DISPATCH_ENTRY_ARB     (BindBuffer),
+    DISPATCH_ENTRY_ARB     (BufferData),
+    DISPATCH_ENTRY_ARB_OES (MapBuffer),
+    DISPATCH_ENTRY_ARB_OES (UnmapBuffer),
+    DISPATCH_ENTRY_LAST
+};
+
+cairo_private cairo_gl_dispatch_entry_t dispatch_shaders_entries[] = {
+    /* Shaders */
+    DISPATCH_ENTRY_CUSTOM (CreateShader, CreateShaderObjectARB),
+    DISPATCH_ENTRY_ARB    (ShaderSource),
+    DISPATCH_ENTRY_ARB    (CompileShader),
+    DISPATCH_ENTRY_CUSTOM (GetShaderiv, GetObjectParameterivARB),
+    DISPATCH_ENTRY_CUSTOM (GetShaderInfoLog, GetInfoLogARB),
+    DISPATCH_ENTRY_CUSTOM (DeleteShader, DeleteObjectARB),
+
+    /* Programs */
+    DISPATCH_ENTRY_CUSTOM (CreateProgram, CreateProgramObjectARB),
+    DISPATCH_ENTRY_CUSTOM (AttachShader, AttachObjectARB),
+    DISPATCH_ENTRY_CUSTOM (DeleteProgram, DeleteObjectARB),
+    DISPATCH_ENTRY_ARB    (LinkProgram),
+    DISPATCH_ENTRY_CUSTOM (UseProgram, UseProgramObjectARB),
+    DISPATCH_ENTRY_CUSTOM (GetProgramiv, GetObjectParameterivARB),
+    DISPATCH_ENTRY_CUSTOM (GetProgramInfoLog, GetInfoLogARB),
+
+    /* Uniforms */
+    DISPATCH_ENTRY_ARB (GetUniformLocation),
+    DISPATCH_ENTRY_ARB (Uniform1f),
+    DISPATCH_ENTRY_ARB (Uniform2f),
+    DISPATCH_ENTRY_ARB (Uniform3f),
+    DISPATCH_ENTRY_ARB (Uniform4f),
+    DISPATCH_ENTRY_ARB (UniformMatrix3fv),
+    DISPATCH_ENTRY_ARB (UniformMatrix4fv),
+    DISPATCH_ENTRY_ARB (Uniform1i),
+
+    /* Attributes */
+    DISPATCH_ENTRY_ARB (BindAttribLocation),
+    DISPATCH_ENTRY_ARB (VertexAttribPointer),
+    DISPATCH_ENTRY_ARB (EnableVertexAttribArray),
+    DISPATCH_ENTRY_ARB (DisableVertexAttribArray),
+
+    DISPATCH_ENTRY_LAST
+};
+
+cairo_private cairo_gl_dispatch_entry_t dispatch_fbo_entries[] = {
+    DISPATCH_ENTRY_EXT (GenFramebuffers),
+    DISPATCH_ENTRY_EXT (BindFramebuffer),
+    DISPATCH_ENTRY_EXT (FramebufferTexture2D),
+    DISPATCH_ENTRY_EXT (CheckFramebufferStatus),
+    DISPATCH_ENTRY_EXT (DeleteFramebuffers),
+    DISPATCH_ENTRY_EXT (GenRenderbuffers),
+    DISPATCH_ENTRY_EXT (BindRenderbuffer),
+    DISPATCH_ENTRY_EXT (RenderbufferStorage),
+    DISPATCH_ENTRY_EXT (FramebufferRenderbuffer),
+    DISPATCH_ENTRY_EXT (DeleteRenderbuffers),
+    DISPATCH_ENTRY_EXT (BlitFramebuffer),
+    DISPATCH_ENTRY_LAST
+};
+
+cairo_private cairo_gl_dispatch_entry_t dispatch_multisampling_entries[] = {
+    DISPATCH_ENTRY_EXT_IMG (RenderbufferStorageMultisample),
+    DISPATCH_ENTRY_EXT_IMG (FramebufferTexture2DMultisample),
+    DISPATCH_ENTRY_LAST
+};
+
+#endif /* CAIRO_GL_DISPATCH_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-gl-dispatch.c b/libs/cairo-1.16.0/src/cairo-gl-dispatch.c
new file mode 100644
index 0000000..a49199d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-dispatch.c
@@ -0,0 +1,273 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-gl-private.h"
+#include "cairo-gl-dispatch-private.h"
+#if CAIRO_HAS_DLSYM
+#include <dlfcn.h>
+#endif
+
+#if CAIRO_HAS_DLSYM
+static void *
+_cairo_gl_dispatch_open_lib (void)
+{
+    return dlopen (NULL, RTLD_LAZY);
+}
+
+static void
+_cairo_gl_dispatch_close_lib (void *handle)
+{
+    dlclose (handle);
+}
+
+static cairo_gl_generic_func_t
+_cairo_gl_dispatch_get_proc_addr (void *handle, const char *name)
+{
+    return (cairo_gl_generic_func_t) dlsym (handle, name);
+}
+#else
+static void *
+_cairo_gl_dispatch_open_lib (void)
+{
+    return NULL;
+}
+
+static void
+_cairo_gl_dispatch_close_lib (void *handle)
+{
+    return;
+}
+
+static cairo_gl_generic_func_t
+_cairo_gl_dispatch_get_proc_addr (void *handle, const char *name)
+{
+    return NULL;
+}
+#endif /* CAIRO_HAS_DLSYM */
+
+
+static void
+_cairo_gl_dispatch_init_entries (cairo_gl_dispatch_t *dispatch,
+				 cairo_gl_get_proc_addr_func_t get_proc_addr,
+				 cairo_gl_dispatch_entry_t *entries,
+				 cairo_gl_dispatch_name_t dispatch_name)
+{
+    cairo_gl_dispatch_entry_t *entry = entries;
+    void *handle = _cairo_gl_dispatch_open_lib ();
+
+    while (entry->name[CAIRO_GL_DISPATCH_NAME_CORE] != NULL) {
+	void *dispatch_ptr = &((char *) dispatch)[entry->offset];
+	const char *name = entry->name[dispatch_name];
+
+	/*
+	 * In strictly conforming EGL implementations, eglGetProcAddress() can
+	 * be used only to get extension functions, but some of the functions
+	 * we want belong to core GL(ES). If the *GetProcAddress function
+	 * provided by the context fails, try to get the address of the wanted
+	 * GL function using standard system facilities (eg dlsym() in *nix
+	 * systems).
+	 */
+	cairo_gl_generic_func_t func = get_proc_addr (name);
+	if (func == NULL)
+	    func = _cairo_gl_dispatch_get_proc_addr (handle, name);
+
+	*((cairo_gl_generic_func_t *) dispatch_ptr) = func;
+
+	++entry;
+    }
+
+    _cairo_gl_dispatch_close_lib (handle);
+}
+
+static cairo_status_t
+_cairo_gl_dispatch_init_buffers (cairo_gl_dispatch_t *dispatch,
+				 cairo_gl_get_proc_addr_func_t get_proc_addr,
+				 int gl_version, cairo_gl_flavor_t gl_flavor)
+{
+    cairo_gl_dispatch_name_t dispatch_name;
+
+    if (gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+    {
+	if (gl_version >= CAIRO_GL_VERSION_ENCODE (1, 5))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+	else if (_cairo_gl_has_extension ("GL_ARB_vertex_buffer_object"))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_EXT;
+	else
+	    return CAIRO_STATUS_DEVICE_ERROR;
+    }
+    else if (gl_flavor == CAIRO_GL_FLAVOR_ES3)
+    {
+	dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+    }
+    else if (gl_flavor == CAIRO_GL_FLAVOR_ES2 &&
+	     gl_version >= CAIRO_GL_VERSION_ENCODE (2, 0))
+    {
+	dispatch_name = CAIRO_GL_DISPATCH_NAME_ES;
+    }
+    else
+    {
+	return CAIRO_STATUS_DEVICE_ERROR;
+    }
+
+    _cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
+				     dispatch_buffers_entries, dispatch_name);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_dispatch_init_shaders (cairo_gl_dispatch_t *dispatch,
+				 cairo_gl_get_proc_addr_func_t get_proc_addr,
+				 int gl_version, cairo_gl_flavor_t gl_flavor)
+{
+    cairo_gl_dispatch_name_t dispatch_name;
+
+    if (gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+    {
+	if (gl_version >= CAIRO_GL_VERSION_ENCODE (2, 0))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+	else if (_cairo_gl_has_extension ("GL_ARB_shader_objects"))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_EXT;
+	else
+	    return CAIRO_STATUS_DEVICE_ERROR;
+    }
+    else if (gl_flavor == CAIRO_GL_FLAVOR_ES3)
+    {
+	dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+    }
+    else if (gl_flavor == CAIRO_GL_FLAVOR_ES2 &&
+	     gl_version >= CAIRO_GL_VERSION_ENCODE (2, 0))
+    {
+	dispatch_name = CAIRO_GL_DISPATCH_NAME_ES;
+    }
+    else
+    {
+	return CAIRO_STATUS_DEVICE_ERROR;
+    }
+
+    _cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
+				     dispatch_shaders_entries, dispatch_name);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_dispatch_init_fbo (cairo_gl_dispatch_t *dispatch,
+			     cairo_gl_get_proc_addr_func_t get_proc_addr,
+			     int gl_version, cairo_gl_flavor_t gl_flavor)
+{
+    cairo_gl_dispatch_name_t dispatch_name;
+
+    if (gl_flavor == CAIRO_GL_FLAVOR_DESKTOP)
+    {
+	if (gl_version >= CAIRO_GL_VERSION_ENCODE (3, 0) ||
+	    _cairo_gl_has_extension ("GL_ARB_framebuffer_object"))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+	else if (_cairo_gl_has_extension ("GL_EXT_framebuffer_object"))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_EXT;
+	else
+	    return CAIRO_STATUS_DEVICE_ERROR;
+    }
+    else if (gl_flavor == CAIRO_GL_FLAVOR_ES3)
+    {
+	dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+    }
+    else if (gl_flavor == CAIRO_GL_FLAVOR_ES2 &&
+	     gl_version >= CAIRO_GL_VERSION_ENCODE (2, 0))
+    {
+	dispatch_name = CAIRO_GL_DISPATCH_NAME_ES;
+    }
+    else
+    {
+	return CAIRO_STATUS_DEVICE_ERROR;
+    }
+
+    _cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
+				     dispatch_fbo_entries, dispatch_name);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_dispatch_init_multisampling (cairo_gl_dispatch_t *dispatch,
+				       cairo_gl_get_proc_addr_func_t get_proc_addr,
+				       int gl_version,
+				       cairo_gl_flavor_t gl_flavor)
+{
+    /* For the multisampling table, there are two GLES versions of the
+     * extension, so we put one in the EXT slot and one in the real ES slot.*/
+    cairo_gl_dispatch_name_t dispatch_name = CAIRO_GL_DISPATCH_NAME_CORE;
+    if (gl_flavor == CAIRO_GL_FLAVOR_ES2) {
+	if (_cairo_gl_has_extension ("GL_EXT_multisampled_render_to_texture"))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_EXT;
+	else if (_cairo_gl_has_extension ("GL_IMG_multisampled_render_to_texture"))
+	    dispatch_name = CAIRO_GL_DISPATCH_NAME_ES;
+    }
+    _cairo_gl_dispatch_init_entries (dispatch, get_proc_addr,
+				     dispatch_multisampling_entries,
+				     dispatch_name);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gl_dispatch_init (cairo_gl_dispatch_t *dispatch,
+			 cairo_gl_get_proc_addr_func_t get_proc_addr)
+{
+    cairo_status_t status;
+    int gl_version;
+    cairo_gl_flavor_t gl_flavor;
+
+    gl_version = _cairo_gl_get_version ();
+    gl_flavor = _cairo_gl_get_flavor ();
+
+    status = _cairo_gl_dispatch_init_buffers (dispatch, get_proc_addr,
+					      gl_version, gl_flavor);
+    if (status != CAIRO_STATUS_SUCCESS)
+	return status;
+
+    status = _cairo_gl_dispatch_init_shaders (dispatch, get_proc_addr,
+					      gl_version, gl_flavor);
+    if (status != CAIRO_STATUS_SUCCESS)
+	return status;
+
+    status = _cairo_gl_dispatch_init_fbo (dispatch, get_proc_addr,
+					  gl_version, gl_flavor);
+    if (status != CAIRO_STATUS_SUCCESS)
+	return status;
+
+    status = _cairo_gl_dispatch_init_multisampling (dispatch, get_proc_addr,
+						    gl_version, gl_flavor);
+    if (status != CAIRO_STATUS_SUCCESS)
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-ext-def-private.h b/libs/cairo-1.16.0/src/cairo-gl-ext-def-private.h
new file mode 100644
index 0000000..a261947
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-ext-def-private.h
@@ -0,0 +1,143 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#ifndef CAIRO_GL_EXT_DEF_PRIVATE_H
+#define CAIRO_GL_EXT_DEF_PRIVATE_H
+
+#ifndef GL_TEXTURE_RECTANGLE
+#define GL_TEXTURE_RECTANGLE 0x84F5
+#endif
+
+#ifndef GL_ARRAY_BUFFER
+#define GL_ARRAY_BUFFER 0x8892
+#endif
+
+#ifndef GL_STREAM_DRAW
+#define GL_STREAM_DRAW 0x88E0
+#endif
+
+#ifndef GL_WRITE_ONLY
+#define GL_WRITE_ONLY 0x88B9
+#endif
+
+#ifndef GL_PIXEL_UNPACK_BUFFER
+#define GL_PIXEL_UNPACK_BUFFER 0x88EC
+#endif
+
+#ifndef GL_FRAMEBUFFER
+#define GL_FRAMEBUFFER 0x8D40
+#endif
+
+#ifndef GL_COLOR_ATTACHMENT0
+#define GL_COLOR_ATTACHMENT0 0x8CE0
+#endif
+
+#ifndef GL_FRAMEBUFFER_COMPLETE
+#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_FORMATS
+#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS 0x8CDA
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER
+#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER 0x8CDB
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER
+#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER 0x8CDC
+#endif
+
+#ifndef GL_FRAMEBUFFER_UNSUPPORTED
+#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
+#endif
+
+#ifndef GL_PACK_INVERT_MESA
+#define GL_PACK_INVERT_MESA 0x8758
+#endif
+
+#ifndef GL_CLAMP_TO_BORDER
+#define GL_CLAMP_TO_BORDER 0x812D
+#endif
+
+#ifndef GL_BGR
+#define GL_BGR 0x80E0
+#endif
+
+#ifndef GL_BGRA
+#define GL_BGRA 0x80E1
+#endif
+
+#ifndef GL_RGBA8
+#define GL_RGBA8 0x8058
+#endif
+
+#ifndef GL_UNSIGNED_INT_8_8_8_8
+#define GL_UNSIGNED_INT_8_8_8_8 0x8035
+#endif
+
+#ifndef GL_UNSIGNED_SHORT_5_6_5_REV
+#define GL_UNSIGNED_SHORT_5_6_5_REV 0x8364
+#endif
+
+#ifndef GL_UNSIGNED_SHORT_1_5_5_5_REV
+#define GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366
+#endif
+
+#ifndef GL_UNSIGNED_INT_8_8_8_8_REV
+#define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
+#endif
+
+#ifndef GL_PACK_ROW_LENGTH
+#define GL_PACK_ROW_LENGTH 0x0D02
+#endif
+
+#ifndef GL_UNPACK_ROW_LENGTH
+#define GL_UNPACK_ROW_LENGTH 0x0CF2
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE 0x8D56
+#endif
+
+#endif /* CAIRO_GL_EXT_DEF_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-gl-glyphs.c b/libs/cairo-1.16.0/src/cairo-gl-glyphs.c
new file mode 100644
index 0000000..5923af4
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-glyphs.c
@@ -0,0 +1,503 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2010 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributors:
+ *      Benjamin Otte <otte@gnome.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-rtree-private.h"
+
+#define GLYPH_CACHE_WIDTH 1024
+#define GLYPH_CACHE_HEIGHT 1024
+#define GLYPH_CACHE_MIN_SIZE 4
+#define GLYPH_CACHE_MAX_SIZE 128
+
+typedef struct _cairo_gl_glyph {
+    cairo_rtree_node_t node;
+    cairo_scaled_glyph_private_t base;
+    cairo_scaled_glyph_t *glyph;
+    cairo_gl_glyph_cache_t *cache;
+    struct { float x, y; } p1, p2;
+} cairo_gl_glyph_t;
+
+static void
+_cairo_gl_node_destroy (cairo_rtree_node_t *node)
+{
+    cairo_gl_glyph_t *priv = cairo_container_of (node, cairo_gl_glyph_t, node);
+    cairo_scaled_glyph_t *glyph;
+
+    glyph = priv->glyph;
+    if (glyph == NULL)
+	    return;
+
+    if (glyph->dev_private_key == priv->cache) {
+	    glyph->dev_private = NULL;
+	    glyph->dev_private_key = NULL;
+    }
+    cairo_list_del (&priv->base.link);
+    priv->glyph = NULL;
+}
+
+static void
+_cairo_gl_glyph_fini (cairo_scaled_glyph_private_t *glyph_private,
+		      cairo_scaled_glyph_t *scaled_glyph,
+		      cairo_scaled_font_t  *scaled_font)
+{
+    cairo_gl_glyph_t *priv = cairo_container_of (glyph_private,
+						 cairo_gl_glyph_t,
+						 base);
+
+    assert (priv->glyph);
+
+    _cairo_gl_node_destroy (&priv->node);
+
+    /* XXX thread-safety? Probably ok due to the frozen scaled-font. */
+    if (! priv->node.pinned)
+	_cairo_rtree_node_remove (&priv->cache->rtree, &priv->node);
+
+    assert (priv->glyph == NULL);
+}
+
+static cairo_int_status_t
+_cairo_gl_glyph_cache_add_glyph (cairo_gl_context_t *ctx,
+				 cairo_gl_glyph_cache_t *cache,
+				 cairo_scaled_glyph_t  *scaled_glyph)
+{
+    cairo_image_surface_t *glyph_surface = scaled_glyph->surface;
+    cairo_gl_glyph_t *glyph_private;
+    cairo_rtree_node_t *node = NULL;
+    cairo_int_status_t status;
+    int width, height;
+
+    width = glyph_surface->width;
+    if (width < GLYPH_CACHE_MIN_SIZE)
+	width = GLYPH_CACHE_MIN_SIZE;
+    height = glyph_surface->height;
+    if (height < GLYPH_CACHE_MIN_SIZE)
+	height = GLYPH_CACHE_MIN_SIZE;
+
+    /* search for an available slot */
+    status = _cairo_rtree_insert (&cache->rtree, width, height, &node);
+    /* search for an unlocked slot */
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	status = _cairo_rtree_evict_random (&cache->rtree,
+					    width, height, &node);
+	if (status == CAIRO_INT_STATUS_SUCCESS) {
+	    status = _cairo_rtree_node_insert (&cache->rtree,
+					       node, width, height, &node);
+	}
+    }
+    if (status)
+	return status;
+
+    /* XXX: Make sure we use the mask texture. This should work automagically somehow */
+    glActiveTexture (GL_TEXTURE1);
+    status = _cairo_gl_surface_draw_image (cache->surface, glyph_surface,
+					   0, 0,
+					   glyph_surface->width, glyph_surface->height,
+					   node->x, node->y, FALSE);
+    if (unlikely (status))
+	return status;
+
+    glyph_private = (cairo_gl_glyph_t *) node;
+    glyph_private->cache = cache;
+    glyph_private->glyph = scaled_glyph;
+    _cairo_scaled_glyph_attach_private (scaled_glyph,
+					&glyph_private->base,
+					cache,
+					_cairo_gl_glyph_fini);
+
+    scaled_glyph->dev_private = glyph_private;
+    scaled_glyph->dev_private_key = cache;
+
+    /* compute tex coords */
+    glyph_private->p1.x = node->x;
+    glyph_private->p1.y = node->y;
+    glyph_private->p2.x = node->x + glyph_surface->width;
+    glyph_private->p2.y = node->y + glyph_surface->height;
+    if (! _cairo_gl_device_requires_power_of_two_textures (&ctx->base)) {
+	glyph_private->p1.x /= GLYPH_CACHE_WIDTH;
+	glyph_private->p2.x /= GLYPH_CACHE_WIDTH;
+	glyph_private->p1.y /= GLYPH_CACHE_HEIGHT;
+	glyph_private->p2.y /= GLYPH_CACHE_HEIGHT;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_gl_glyph_t *
+_cairo_gl_glyph_cache_lock (cairo_gl_glyph_cache_t *cache,
+			    cairo_scaled_glyph_t *scaled_glyph)
+{
+    return _cairo_rtree_pin (&cache->rtree, scaled_glyph->dev_private);
+}
+
+static cairo_status_t
+cairo_gl_context_get_glyph_cache (cairo_gl_context_t *ctx,
+				  cairo_format_t format,
+				  cairo_gl_glyph_cache_t **cache_out)
+{
+    cairo_gl_glyph_cache_t *cache;
+    cairo_content_t content;
+
+    switch (format) {
+    case CAIRO_FORMAT_RGB30:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+	cache = &ctx->glyph_cache[0];
+	content = CAIRO_CONTENT_COLOR_ALPHA;
+	break;
+    case CAIRO_FORMAT_A8:
+    case CAIRO_FORMAT_A1:
+	cache = &ctx->glyph_cache[1];
+	content = CAIRO_CONTENT_ALPHA;
+	break;
+    default:
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    }
+
+    if (unlikely (cache->surface == NULL)) {
+	cairo_surface_t *surface;
+
+	surface = _cairo_gl_surface_create_scratch_for_caching (ctx,
+								content,
+								GLYPH_CACHE_WIDTH,
+								GLYPH_CACHE_HEIGHT);
+	if (unlikely (surface->status))
+	    return surface->status;
+
+	_cairo_surface_release_device_reference (surface);
+
+	cache->surface = (cairo_gl_surface_t *)surface;
+	cache->surface->operand.texture.attributes.has_component_alpha =
+	    content == CAIRO_CONTENT_COLOR_ALPHA;
+    }
+
+    *cache_out = cache;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+render_glyphs (cairo_gl_surface_t *dst,
+	       int dst_x, int dst_y,
+	       cairo_operator_t op,
+	       cairo_surface_t *source,
+	       cairo_composite_glyphs_info_t *info,
+	       cairo_bool_t *has_component_alpha,
+	       cairo_clip_t *clip)
+{
+    cairo_format_t last_format = CAIRO_FORMAT_INVALID;
+    cairo_gl_glyph_cache_t *cache = NULL;
+    cairo_gl_context_t *ctx;
+    cairo_gl_emit_glyph_t emit = NULL;
+    cairo_gl_composite_t setup;
+    cairo_int_status_t status;
+    int i = 0;
+
+    TRACE ((stderr, "%s (%d, %d)x(%d, %d)\n", __FUNCTION__,
+	    info->extents.x, info->extents.y,
+	    info->extents.width, info->extents.height));
+
+    *has_component_alpha = FALSE;
+
+    status = _cairo_gl_context_acquire (dst->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_gl_composite_init (&setup, op, dst, TRUE);
+    if (unlikely (status))
+	goto FINISH;
+
+    if (source == NULL) {
+	    _cairo_gl_composite_set_solid_source (&setup, CAIRO_COLOR_WHITE);
+    } else {
+	    _cairo_gl_composite_set_source_operand (&setup,
+						    source_to_operand (source));
+
+    }
+
+    _cairo_gl_composite_set_clip (&setup, clip);
+
+    for (i = 0; i < info->num_glyphs; i++) {
+	cairo_scaled_glyph_t *scaled_glyph;
+	cairo_gl_glyph_t *glyph;
+	double x_offset, y_offset;
+	double x1, x2, y1, y2;
+
+	status = _cairo_scaled_glyph_lookup (info->font,
+					     info->glyphs[i].index,
+					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					     &scaled_glyph);
+	if (unlikely (status))
+	    goto FINISH;
+
+	if (scaled_glyph->surface->width  == 0 ||
+	    scaled_glyph->surface->height == 0)
+	{
+	    continue;
+	}
+	if (scaled_glyph->surface->format != last_format) {
+	    status = cairo_gl_context_get_glyph_cache (ctx,
+						       scaled_glyph->surface->format,
+						       &cache);
+	    if (unlikely (status))
+		goto FINISH;
+
+	    last_format = scaled_glyph->surface->format;
+
+	    _cairo_gl_composite_set_mask_operand (&setup, &cache->surface->operand);
+	    *has_component_alpha |= cache->surface->operand.texture.attributes.has_component_alpha;
+
+	    /* XXX Shoot me. */
+	    status = _cairo_gl_composite_begin (&setup, &ctx);
+	    status = _cairo_gl_context_release (ctx, status);
+	    if (unlikely (status))
+		goto FINISH;
+
+	    emit = _cairo_gl_context_choose_emit_glyph (ctx);
+	}
+
+	if (scaled_glyph->dev_private_key != cache) {
+	    cairo_scaled_glyph_private_t *priv;
+
+	    priv = _cairo_scaled_glyph_find_private (scaled_glyph, cache);
+	    if (priv) {
+		scaled_glyph->dev_private_key = cache;
+		scaled_glyph->dev_private = cairo_container_of (priv,
+								cairo_gl_glyph_t,
+								base);
+	    } else {
+		status = _cairo_gl_glyph_cache_add_glyph (ctx, cache, scaled_glyph);
+
+		if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+		    /* Cache is full, so flush existing prims and try again. */
+		    _cairo_gl_composite_flush (ctx);
+		    _cairo_gl_glyph_cache_unlock (cache);
+		    status = _cairo_gl_glyph_cache_add_glyph (ctx, cache, scaled_glyph);
+		}
+
+		if (unlikely (_cairo_int_status_is_error (status)))
+		    goto FINISH;
+	    }
+	}
+
+	x_offset = scaled_glyph->surface->base.device_transform.x0;
+	y_offset = scaled_glyph->surface->base.device_transform.y0;
+
+	x1 = _cairo_lround (info->glyphs[i].x - x_offset - dst_x);
+	y1 = _cairo_lround (info->glyphs[i].y - y_offset - dst_y);
+	x2 = x1 + scaled_glyph->surface->width;
+	y2 = y1 + scaled_glyph->surface->height;
+
+	glyph = _cairo_gl_glyph_cache_lock (cache, scaled_glyph);
+	assert (emit);
+	emit (ctx,
+	      x1, y1, x2, y2,
+	      glyph->p1.x, glyph->p1.y,
+	      glyph->p2.x, glyph->p2.y);
+    }
+
+    status = CAIRO_STATUS_SUCCESS;
+  FINISH:
+    status = _cairo_gl_context_release (ctx, status);
+
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_int_status_t
+render_glyphs_via_mask (cairo_gl_surface_t *dst,
+			int dst_x, int dst_y,
+			cairo_operator_t  op,
+			cairo_surface_t *source,
+			cairo_composite_glyphs_info_t *info,
+			cairo_clip_t *clip)
+{
+    cairo_surface_t *mask;
+    cairo_status_t status;
+    cairo_bool_t has_component_alpha;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    /* XXX: For non-CA, this should be CAIRO_CONTENT_ALPHA to save memory */
+    mask = cairo_gl_surface_create (dst->base.device,
+				    CAIRO_CONTENT_COLOR_ALPHA,
+				    info->extents.width,
+				    info->extents.height);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    status = render_glyphs ((cairo_gl_surface_t *) mask,
+			    info->extents.x, info->extents.y,
+			    CAIRO_OPERATOR_ADD, NULL,
+			    info, &has_component_alpha, NULL);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	cairo_surface_pattern_t mask_pattern;
+	cairo_surface_pattern_t source_pattern;
+	cairo_rectangle_int_t clip_extents;
+
+	mask->is_clear = FALSE;
+	_cairo_pattern_init_for_surface (&mask_pattern, mask);
+	mask_pattern.base.has_component_alpha = has_component_alpha;
+	mask_pattern.base.filter = CAIRO_FILTER_NEAREST;
+	mask_pattern.base.extend = CAIRO_EXTEND_NONE;
+
+	cairo_matrix_init_translate (&mask_pattern.base.matrix,
+				     dst_x-info->extents.x, dst_y-info->extents.y);
+
+	_cairo_pattern_init_for_surface (&source_pattern, source);
+	cairo_matrix_init_translate (&source_pattern.base.matrix,
+				     dst_x-info->extents.x, dst_y-info->extents.y);
+
+	clip = _cairo_clip_copy (clip);
+	clip_extents.x = info->extents.x - dst_x;
+	clip_extents.y = info->extents.y - dst_y;
+	clip_extents.width = info->extents.width;
+	clip_extents.height = info->extents.height;
+	clip = _cairo_clip_intersect_rectangle (clip, &clip_extents);
+
+	status = _cairo_surface_mask (&dst->base, op,
+				      &source_pattern.base,
+				      &mask_pattern.base,
+				      clip);
+
+	_cairo_clip_destroy (clip);
+
+	_cairo_pattern_fini (&mask_pattern.base);
+	_cairo_pattern_fini (&source_pattern.base);
+    }
+
+    cairo_surface_destroy (mask);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_gl_check_composite_glyphs (const cairo_composite_rectangles_t *extents,
+				  cairo_scaled_font_t *scaled_font,
+				  cairo_glyph_t *glyphs,
+				  int *num_glyphs)
+{
+    if (! _cairo_gl_operator_is_supported (extents->op))
+	return UNSUPPORTED ("unsupported operator");
+
+    /* XXX use individual masks for large glyphs? */
+    if (ceil (scaled_font->max_scale) >= GLYPH_CACHE_MAX_SIZE)
+	return UNSUPPORTED ("glyphs too large");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_gl_composite_glyphs_with_clip (void			    *_dst,
+				      cairo_operator_t		     op,
+				      cairo_surface_t		    *_src,
+				      int			     src_x,
+				      int			     src_y,
+				      int			     dst_x,
+				      int			     dst_y,
+				      cairo_composite_glyphs_info_t *info,
+				      cairo_clip_t		    *clip)
+{
+    cairo_gl_surface_t *dst = _dst;
+    cairo_bool_t has_component_alpha;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    /* If any of the glyphs require component alpha, we have to go through
+     * a mask, since only _cairo_gl_surface_composite() currently supports
+     * component alpha.
+     */
+    if (!dst->base.is_clear && ! info->use_mask && op != CAIRO_OPERATOR_OVER &&
+	(info->font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL ||
+	 info->font->options.antialias == CAIRO_ANTIALIAS_BEST))
+    {
+	info->use_mask = TRUE;
+    }
+
+    if (info->use_mask) {
+	return render_glyphs_via_mask (dst, dst_x, dst_y,
+				       op, _src, info, clip);
+    } else {
+	return render_glyphs (dst, dst_x, dst_y,
+			      op, _src, info,
+			      &has_component_alpha,
+			      clip);
+    }
+
+}
+
+cairo_int_status_t
+_cairo_gl_composite_glyphs (void			*_dst,
+			    cairo_operator_t		 op,
+			    cairo_surface_t		*_src,
+			    int				 src_x,
+			    int				 src_y,
+			    int				 dst_x,
+			    int				 dst_y,
+			    cairo_composite_glyphs_info_t *info)
+{
+    return _cairo_gl_composite_glyphs_with_clip (_dst, op, _src, src_x, src_y,
+						 dst_x, dst_y, info, NULL);
+}
+
+void
+_cairo_gl_glyph_cache_init (cairo_gl_glyph_cache_t *cache)
+{
+    _cairo_rtree_init (&cache->rtree,
+		       GLYPH_CACHE_WIDTH,
+		       GLYPH_CACHE_HEIGHT,
+		       GLYPH_CACHE_MIN_SIZE,
+		       sizeof (cairo_gl_glyph_t),
+		       _cairo_gl_node_destroy);
+}
+
+void
+_cairo_gl_glyph_cache_fini (cairo_gl_context_t *ctx,
+			    cairo_gl_glyph_cache_t *cache)
+{
+    _cairo_rtree_fini (&cache->rtree);
+    cairo_surface_destroy (&cache->surface->base);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-gradient-private.h b/libs/cairo-1.16.0/src/cairo-gl-gradient-private.h
new file mode 100644
index 0000000..0d9f41f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-gradient-private.h
@@ -0,0 +1,96 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#ifndef CAIRO_GL_GRADIENT_PRIVATE_H
+#define CAIRO_GL_GRADIENT_PRIVATE_H
+
+#define GL_GLEXT_PROTOTYPES
+
+#include "cairo-cache-private.h"
+#include "cairo-device-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-types-private.h"
+
+#include "cairo-gl.h"
+
+#if CAIRO_HAS_GLESV3_SURFACE
+#include <GLES3/gl3.h>
+#include <GLES3/gl3ext.h>
+#elif CAIRO_HAS_GLESV2_SURFACE
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#elif CAIRO_HAS_GL_SURFACE
+#include <GL/gl.h>
+#include <GL/glext.h>
+#endif
+
+#define CAIRO_GL_GRADIENT_CACHE_SIZE 4096
+
+/* XXX: Declare in a better place */
+typedef struct _cairo_gl_context cairo_gl_context_t;
+
+typedef struct _cairo_gl_gradient {
+    cairo_cache_entry_t           cache_entry;
+    cairo_reference_count_t       ref_count;
+    cairo_device_t               *device; /* NB: we don't hold a reference */
+    GLuint                        tex;
+    unsigned int	          n_stops;
+    const cairo_gradient_stop_t  *stops;
+    cairo_gradient_stop_t         stops_embedded[1];
+} cairo_gl_gradient_t;
+
+cairo_private cairo_int_status_t
+_cairo_gl_gradient_create (cairo_gl_context_t           *ctx,
+                           unsigned int                  n_stops,
+                           const cairo_gradient_stop_t  *stops,
+                           cairo_gl_gradient_t         **gradient_out);
+
+cairo_private_no_warn cairo_gl_gradient_t *
+_cairo_gl_gradient_reference (cairo_gl_gradient_t *gradient);
+
+cairo_private void
+_cairo_gl_gradient_destroy (cairo_gl_gradient_t *gradient);
+
+cairo_private cairo_bool_t
+_cairo_gl_gradient_equal (const void *key_a, const void *key_b);
+
+
+#endif /* CAIRO_GL_GRADIENT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-gl-gradient.c b/libs/cairo-1.16.0/src/cairo-gl-gradient.c
new file mode 100644
index 0000000..6107bea
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-gradient.c
@@ -0,0 +1,339 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-gl-gradient-private.h"
+#include "cairo-gl-private.h"
+
+
+static int
+_cairo_gl_gradient_sample_width (unsigned int                 n_stops,
+				 const cairo_gradient_stop_t *stops)
+{
+    unsigned int n;
+    int width;
+
+    width = 8;
+    for (n = 1; n < n_stops; n++) {
+	double dx = stops[n].offset - stops[n-1].offset;
+	double delta, max;
+	int ramp;
+
+	if (dx == 0)
+	    return 1024; /* we need to emulate an infinitely sharp step */
+
+	max = fabs (stops[n].color.red - stops[n-1].color.red);
+
+	delta = fabs (stops[n].color.green - stops[n-1].color.green);
+	if (delta > max)
+	    max = delta;
+
+	delta = fabs (stops[n].color.blue - stops[n-1].color.blue);
+	if (delta > max)
+	    max = delta;
+
+	delta = fabs (stops[n].color.alpha - stops[n-1].color.alpha);
+	if (delta > max)
+	    max = delta;
+
+	ramp = 128 * max / dx;
+	if (ramp > width)
+	    width = ramp;
+    }
+
+    return (width + 7) & -8;
+}
+
+static uint8_t premultiply(double c, double a)
+{
+    int v = c * a * 256;
+    return v - (v >> 8);
+}
+
+static uint32_t color_stop_to_pixel(const cairo_gradient_stop_t *stop)
+{
+    uint8_t a, r, g, b;
+
+    a = stop->color.alpha_short >> 8;
+    r = premultiply(stop->color.red,   stop->color.alpha);
+    g = premultiply(stop->color.green, stop->color.alpha);
+    b = premultiply(stop->color.blue,  stop->color.alpha);
+
+    if (_cairo_is_little_endian ())
+	return a << 24 | r << 16 | g << 8 | b << 0;
+    else
+	return a << 0 | r << 8 | g << 16 | b << 24;
+}
+
+static cairo_status_t
+_cairo_gl_gradient_render (const cairo_gl_context_t    *ctx,
+			   unsigned int                 n_stops,
+			   const cairo_gradient_stop_t *stops,
+			   void                        *bytes,
+			   int                          width)
+{
+    pixman_image_t *gradient, *image;
+    pixman_gradient_stop_t pixman_stops_stack[32];
+    pixman_gradient_stop_t *pixman_stops;
+    pixman_point_fixed_t p1, p2;
+    unsigned int i;
+    pixman_format_code_t gradient_pixman_format;
+
+    /*
+     * Ensure that the order of the gradient's components in memory is BGRA.
+     * This is done so that the gradient's pixel data is always suitable for
+     * texture upload using format=GL_BGRA and type=GL_UNSIGNED_BYTE.
+     */
+    if (_cairo_is_little_endian ())
+	gradient_pixman_format = PIXMAN_a8r8g8b8;
+    else
+	gradient_pixman_format = PIXMAN_b8g8r8a8;
+
+    pixman_stops = pixman_stops_stack;
+    if (unlikely (n_stops > ARRAY_LENGTH (pixman_stops_stack))) {
+	pixman_stops = _cairo_malloc_ab (n_stops,
+					 sizeof (pixman_gradient_stop_t));
+	if (unlikely (pixman_stops == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    for (i = 0; i < n_stops; i++) {
+	pixman_stops[i].x = _cairo_fixed_16_16_from_double (stops[i].offset);
+	pixman_stops[i].color.red   = stops[i].color.red_short;
+	pixman_stops[i].color.green = stops[i].color.green_short;
+	pixman_stops[i].color.blue  = stops[i].color.blue_short;
+	pixman_stops[i].color.alpha = stops[i].color.alpha_short;
+    }
+
+    p1.x = _cairo_fixed_16_16_from_double (0.5);
+    p1.y = 0;
+    p2.x = _cairo_fixed_16_16_from_double (width - 0.5);
+    p2.y = 0;
+
+    gradient = pixman_image_create_linear_gradient (&p1, &p2,
+						    pixman_stops,
+						    n_stops);
+    if (pixman_stops != pixman_stops_stack)
+	free (pixman_stops);
+
+    if (unlikely (gradient == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    pixman_image_set_filter (gradient, PIXMAN_FILTER_BILINEAR, NULL, 0);
+    pixman_image_set_repeat (gradient, PIXMAN_REPEAT_PAD);
+
+    image = pixman_image_create_bits (gradient_pixman_format, width, 1,
+				      bytes, sizeof(uint32_t)*width);
+    if (unlikely (image == NULL)) {
+	pixman_image_unref (gradient);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pixman_image_composite32 (PIXMAN_OP_SRC,
+			      gradient, NULL, image,
+			      0, 0,
+			      0, 0,
+			      0, 0,
+			      width, 1);
+
+    pixman_image_unref (gradient);
+    pixman_image_unref (image);
+
+    /* We need to fudge pixel 0 to hold the left-most color stop and not
+     * the neareset stop to the zeroth pixel centre in order to correctly
+     * populate the border color. For completeness, do both edges.
+     */
+    ((uint32_t*)bytes)[0] = color_stop_to_pixel(&stops[0]);
+    ((uint32_t*)bytes)[width-1] = color_stop_to_pixel(&stops[n_stops-1]);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static unsigned long
+_cairo_gl_gradient_hash (unsigned int                  n_stops,
+			 const cairo_gradient_stop_t  *stops)
+{
+    return _cairo_hash_bytes (n_stops,
+			      stops,
+			      sizeof (cairo_gradient_stop_t) * n_stops);
+}
+
+static cairo_gl_gradient_t *
+_cairo_gl_gradient_lookup (cairo_gl_context_t           *ctx,
+			   unsigned long                 hash,
+			   unsigned int                  n_stops,
+			   const cairo_gradient_stop_t  *stops)
+{
+    cairo_gl_gradient_t lookup;
+
+    lookup.cache_entry.hash = hash,
+    lookup.n_stops = n_stops;
+    lookup.stops = stops;
+
+    return _cairo_cache_lookup (&ctx->gradients, &lookup.cache_entry);
+}
+
+cairo_bool_t
+_cairo_gl_gradient_equal (const void *key_a, const void *key_b)
+{
+    const cairo_gl_gradient_t *a = key_a;
+    const cairo_gl_gradient_t *b = key_b;
+
+    if (a->n_stops != b->n_stops)
+	return FALSE;
+
+    return memcmp (a->stops, b->stops, a->n_stops * sizeof (cairo_gradient_stop_t)) == 0;
+}
+
+cairo_int_status_t
+_cairo_gl_gradient_create (cairo_gl_context_t           *ctx,
+			   unsigned int                  n_stops,
+			   const cairo_gradient_stop_t  *stops,
+			   cairo_gl_gradient_t         **gradient_out)
+{
+    unsigned long hash;
+    cairo_gl_gradient_t *gradient;
+    cairo_status_t status;
+    int tex_width;
+    GLint internal_format;
+    void *data;
+
+    if ((unsigned int) ctx->max_texture_size / 2 <= n_stops)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    hash = _cairo_gl_gradient_hash (n_stops, stops);
+
+    gradient = _cairo_gl_gradient_lookup (ctx, hash, n_stops, stops);
+    if (gradient) {
+	*gradient_out = _cairo_gl_gradient_reference (gradient);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    gradient = _cairo_malloc (sizeof (cairo_gl_gradient_t) + sizeof (cairo_gradient_stop_t) * (n_stops - 1));
+    if (gradient == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    tex_width = _cairo_gl_gradient_sample_width (n_stops, stops);
+    if (tex_width > ctx->max_texture_size)
+	tex_width = ctx->max_texture_size;
+
+    CAIRO_REFERENCE_COUNT_INIT (&gradient->ref_count, 2);
+    gradient->cache_entry.hash = hash;
+    gradient->cache_entry.size = tex_width;
+    gradient->device = &ctx->base;
+    gradient->n_stops = n_stops;
+    gradient->stops = gradient->stops_embedded;
+    memcpy (gradient->stops_embedded, stops, n_stops * sizeof (cairo_gradient_stop_t));
+
+    glGenTextures (1, &gradient->tex);
+    _cairo_gl_context_activate (ctx, CAIRO_GL_TEX_TEMP);
+    glBindTexture (ctx->tex_target, gradient->tex);
+
+    data = _cairo_malloc_ab (tex_width, sizeof (uint32_t));
+    if (unlikely (data == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto cleanup_gradient;
+    }
+
+    status = _cairo_gl_gradient_render (ctx, n_stops, stops, data, tex_width);
+    if (unlikely (status))
+	goto cleanup_data;
+
+    /*
+     * In OpenGL ES 2.0 no format conversion is allowed i.e. 'internalFormat'
+     * must match 'format' in glTexImage2D.
+     */
+    if (_cairo_gl_get_flavor () == CAIRO_GL_FLAVOR_ES3 ||
+	_cairo_gl_get_flavor () == CAIRO_GL_FLAVOR_ES2)
+	internal_format = GL_BGRA;
+    else
+	internal_format = GL_RGBA;
+
+    glTexImage2D (ctx->tex_target, 0, internal_format, tex_width, 1, 0,
+		  GL_BGRA, GL_UNSIGNED_BYTE, data);
+
+    free (data);
+
+    /* we ignore errors here and just return an uncached gradient */
+    if (unlikely (_cairo_cache_insert (&ctx->gradients, &gradient->cache_entry)))
+	CAIRO_REFERENCE_COUNT_INIT (&gradient->ref_count, 1);
+
+    *gradient_out = gradient;
+    return CAIRO_STATUS_SUCCESS;
+
+cleanup_data:
+    free (data);
+cleanup_gradient:
+    free (gradient);
+    return status;
+}
+
+cairo_gl_gradient_t *
+_cairo_gl_gradient_reference (cairo_gl_gradient_t *gradient)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&gradient->ref_count));
+
+    _cairo_reference_count_inc (&gradient->ref_count);
+
+    return gradient;
+}
+
+void
+_cairo_gl_gradient_destroy (cairo_gl_gradient_t *gradient)
+{
+    cairo_gl_context_t *ctx;
+    cairo_status_t ignore;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&gradient->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&gradient->ref_count))
+	return;
+
+    if (_cairo_gl_context_acquire (gradient->device, &ctx) == CAIRO_STATUS_SUCCESS) {
+	/* The gradient my still be active in the last operation, so flush */
+	_cairo_gl_composite_flush (ctx);
+	glDeleteTextures (1, &gradient->tex);
+	ignore = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+    }
+
+    free (gradient);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-info.c b/libs/cairo-1.16.0/src/cairo-gl-info.c
new file mode 100644
index 0000000..26b7b45
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-info.c
@@ -0,0 +1,113 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-gl-private.h"
+
+#include <errno.h>
+
+int
+_cairo_gl_get_version (void)
+{
+    int major, minor;
+    const char *version = (const char *) glGetString (GL_VERSION);
+    const char *dot = version == NULL ? NULL : strchr (version, '.');
+    const char *major_start = dot;
+
+    /* Sanity check */
+    if (dot == NULL || dot == version || *(dot + 1) == '\0') {
+	major = 0;
+	minor = 0;
+    } else {
+	/* Find the start of the major version in the string */
+	while (major_start > version && *major_start != ' ')
+	    --major_start;
+	major = strtol (major_start, NULL, 10);
+	minor = strtol (dot + 1, NULL, 10);
+    }
+
+    return CAIRO_GL_VERSION_ENCODE (major, minor);
+}
+
+cairo_gl_flavor_t
+_cairo_gl_get_flavor (void)
+{
+    const char *version = (const char *) glGetString (GL_VERSION);
+    cairo_gl_flavor_t flavor;
+
+    if (version == NULL)
+	flavor = CAIRO_GL_FLAVOR_NONE;
+    else if (strstr (version, "OpenGL ES 3") != NULL)
+	flavor = CAIRO_GL_FLAVOR_ES3;
+    else if (strstr (version, "OpenGL ES 2") != NULL)
+	flavor = CAIRO_GL_FLAVOR_ES2;
+    else
+	flavor = CAIRO_GL_FLAVOR_DESKTOP;
+
+    return flavor;
+}
+
+unsigned long
+_cairo_gl_get_vbo_size (void)
+{
+    unsigned long vbo_size;
+
+    const char *env = getenv ("CAIRO_GL_VBO_SIZE");
+    if (env == NULL) {
+	vbo_size = CAIRO_GL_VBO_SIZE_DEFAULT;
+    } else {
+	errno = 0;
+	vbo_size = strtol (env, NULL, 10);
+	assert (errno == 0);
+	assert (vbo_size > 0);
+    }
+
+    return vbo_size;
+}
+
+cairo_bool_t
+_cairo_gl_has_extension (const char *ext)
+{
+    const char *extensions = (const char *) glGetString (GL_EXTENSIONS);
+    size_t len = strlen (ext);
+    const char *ext_ptr = extensions;
+
+    if (unlikely (ext_ptr == NULL))
+	return 0;
+
+    while ((ext_ptr = strstr (ext_ptr, ext)) != NULL) {
+	if (ext_ptr[len] == ' ' || ext_ptr[len] == '\0')
+	    break;
+	ext_ptr += len;
+    }
+
+    return (ext_ptr != NULL);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-msaa-compositor.c b/libs/cairo-1.16.0/src/cairo-gl-msaa-compositor.c
new file mode 100644
index 0000000..7a83dd2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-msaa-compositor.c
@@ -0,0 +1,956 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ * Copyright © 2011 Samsung Electronics
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Henry Song <hsong@sisa.samsung.com>
+ *	Martin Robinson <mrobinson@igalia.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-gl-private.h"
+#include "cairo-path-private.h"
+#include "cairo-traps-private.h"
+
+static cairo_bool_t
+can_use_msaa_compositor (cairo_gl_surface_t *surface,
+			 cairo_antialias_t antialias);
+
+static void
+query_surface_capabilities (cairo_gl_surface_t *surface);
+
+struct _tristrip_composite_info {
+    cairo_gl_composite_t	setup;
+    cairo_gl_context_t		*ctx;
+};
+
+static cairo_int_status_t
+_draw_trap (cairo_gl_context_t		*ctx,
+	    cairo_gl_composite_t	*setup,
+	    cairo_trapezoid_t		*trap)
+{
+    cairo_point_t quad[4];
+
+    quad[0].x = _cairo_edge_compute_intersection_x_for_y (&trap->left.p1,
+							  &trap->left.p2,
+							  trap->top);
+    quad[0].y = trap->top;
+
+    quad[1].x = _cairo_edge_compute_intersection_x_for_y (&trap->left.p1,
+						      &trap->left.p2,
+						      trap->bottom);
+    quad[1].y = trap->bottom;
+
+    quad[2].x = _cairo_edge_compute_intersection_x_for_y (&trap->right.p1,
+						      &trap->right.p2,
+						      trap->bottom);
+    quad[2].y = trap->bottom;
+
+    quad[3].x = _cairo_edge_compute_intersection_x_for_y (&trap->right.p1,
+						      &trap->right.p2,
+						      trap->top);
+    quad[3].y = trap->top;
+    return _cairo_gl_composite_emit_quad_as_tristrip (ctx, setup, quad);
+}
+
+static cairo_int_status_t
+_draw_traps (cairo_gl_context_t		*ctx,
+	     cairo_gl_composite_t	*setup,
+	     cairo_traps_t		*traps)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    int i;
+
+    for (i = 0; i < traps->num_traps; i++) {
+	cairo_trapezoid_t *trap = traps->traps + i;
+	if (unlikely ((status = _draw_trap (ctx, setup, trap))))
+	    return status;
+    }
+
+   return status;
+}
+
+static cairo_int_status_t
+_draw_int_rect (cairo_gl_context_t	*ctx,
+		cairo_gl_composite_t	*setup,
+		cairo_rectangle_int_t	*rect)
+{
+    cairo_box_t box;
+    cairo_point_t quad[4];
+
+    _cairo_box_from_rectangle (&box, rect);
+    quad[0].x = box.p1.x;
+    quad[0].y = box.p1.y;
+    quad[1].x = box.p1.x;
+    quad[1].y = box.p2.y;
+    quad[2].x = box.p2.x;
+    quad[2].y = box.p2.y;
+    quad[3].x = box.p2.x;
+    quad[3].y = box.p1.y;
+
+    return _cairo_gl_composite_emit_quad_as_tristrip (ctx, setup, quad);
+}
+
+static cairo_int_status_t
+_draw_triangle_fan (cairo_gl_context_t		*ctx,
+		    cairo_gl_composite_t	*setup,
+		    const cairo_point_t		*midpt,
+		    const cairo_point_t		*points,
+		    int				 npoints)
+{
+    int i;
+
+    /* Our strategy here is to not even try to build a triangle fan, but to
+       draw each triangle as if it was an unconnected member of a triangle strip. */
+    for (i = 1; i < npoints; i++) {
+	cairo_int_status_t status;
+	cairo_point_t triangle[3];
+
+	triangle[0] = *midpt;
+	triangle[1] = points[i - 1];
+	triangle[2] = points[i];
+
+	status = _cairo_gl_composite_emit_triangle_as_tristrip (ctx, setup, triangle);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_clip_to_traps (cairo_clip_t *clip,
+		cairo_traps_t *traps)
+{
+    cairo_int_status_t status;
+    cairo_polygon_t polygon;
+    cairo_antialias_t antialias;
+    cairo_fill_rule_t fill_rule;
+
+    _cairo_traps_init (traps);
+
+    if (clip->num_boxes == 1 && clip->path == NULL) {
+	cairo_boxes_t boxes;
+	_cairo_boxes_init_for_array (&boxes, clip->boxes, clip->num_boxes);
+	return _cairo_traps_init_boxes (traps, &boxes);
+    }
+
+    status = _cairo_clip_get_polygon (clip, &polygon, &fill_rule, &antialias);
+    if (unlikely (status))
+	return status;
+
+    /* We ignore the antialias mode of the clip here, since the user requested
+     * unantialiased rendering of their path and we expect that this stencil
+     * based rendering of the clip to be a reasonable approximation to
+     * the intersection between that clip and the path.
+     *
+     * In other words, what the user expects when they try to perform
+     * a geometric intersection between an unantialiased polygon and an
+     * antialiased polygon is open to interpretation. And we choose the fast
+     * option.
+     */
+
+    _cairo_traps_init (traps);
+    status = _cairo_bentley_ottmann_tessellate_polygon (traps,
+							&polygon,
+							fill_rule);
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_gl_msaa_compositor_draw_clip (cairo_gl_context_t *ctx,
+				     cairo_gl_composite_t *setup,
+				     cairo_clip_t *clip)
+{
+    cairo_int_status_t status;
+    cairo_traps_t traps;
+
+    status = _clip_to_traps (clip, &traps);
+    if (unlikely (status))
+	return status;
+    status = _draw_traps (ctx, setup, &traps);
+
+    _cairo_traps_fini (&traps);
+    return status;
+}
+
+static cairo_bool_t
+_should_use_unbounded_surface (cairo_composite_rectangles_t *composite)
+{
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+    cairo_rectangle_int_t *source = &composite->source;
+
+    if (composite->is_bounded)
+	return FALSE;
+
+    /* This isn't just an optimization. It also detects when painting is used
+       to paint back the unbounded surface, preventing infinite recursion. */
+    return ! (source->x <= 0 && source->y <= 0 &&
+	      source->height + source->y >= dst->height &&
+	      source->width + source->x >= dst->width);
+}
+
+static cairo_surface_t*
+_prepare_unbounded_surface (cairo_gl_surface_t *dst)
+{
+
+    cairo_surface_t* surface = cairo_gl_surface_create (dst->base.device,
+							dst->base.content,
+							dst->width,
+							dst->height);
+    if (surface == NULL)
+	return NULL;
+    if (unlikely (surface->status)) {
+	cairo_surface_destroy (surface);
+	return NULL;
+    }
+    return surface;
+}
+
+static cairo_int_status_t
+_paint_back_unbounded_surface (const cairo_compositor_t		*compositor,
+			       cairo_composite_rectangles_t	*composite,
+			       cairo_surface_t			*surface)
+{
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+    cairo_int_status_t status;
+
+    cairo_pattern_t *pattern = cairo_pattern_create_for_surface (surface);
+    if (unlikely (pattern->status)) {
+	status = pattern->status;
+	goto finish;
+    }
+
+    status = _cairo_compositor_paint (compositor, &dst->base,
+				      composite->op, pattern,
+				      composite->clip);
+
+finish:
+    cairo_pattern_destroy (pattern);
+    cairo_surface_destroy (surface);
+    return status;
+}
+
+static cairo_bool_t
+can_use_msaa_compositor (cairo_gl_surface_t *surface,
+			 cairo_antialias_t antialias)
+{
+    cairo_gl_flavor_t gl_flavor = ((cairo_gl_context_t *) surface->base.device)->gl_flavor;
+
+    query_surface_capabilities (surface);
+    if (! surface->supports_stencil)
+	return FALSE;
+
+    /* Multisampling OpenGL ES surfaces only maintain one multisampling
+       framebuffer and thus must use the spans compositor to do non-antialiased
+       rendering. */
+    if ((gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	 gl_flavor == CAIRO_GL_FLAVOR_ES2)
+	 && surface->supports_msaa
+	 && surface->num_samples > 1
+	 && antialias == CAIRO_ANTIALIAS_NONE)
+	return FALSE;
+
+    /* The MSAA compositor has a single-sample mode, so we can
+       support non-antialiased rendering. */
+    if (antialias == CAIRO_ANTIALIAS_NONE)
+	return TRUE;
+
+    if (antialias == CAIRO_ANTIALIAS_FAST || antialias == CAIRO_ANTIALIAS_DEFAULT)
+	return surface->supports_msaa;
+    return FALSE;
+}
+
+static void
+_cairo_gl_msaa_compositor_set_clip (cairo_composite_rectangles_t *composite,
+				    cairo_gl_composite_t *setup)
+{
+    if (_cairo_composite_rectangles_can_reduce_clip (composite, composite->clip))
+	return;
+    _cairo_gl_composite_set_clip (setup, composite->clip);
+}
+
+/* Masking with the SOURCE operator requires two passes. In the first
+ * pass we use the mask as the source to get:
+ * result = (1 - ma) * dst
+ * In the second pass we use the add operator to achieve:
+ * result = (src * ma) + dst
+ * Combined this produces:
+ * result = (src * ma) + (1 - ma) * dst
+ */
+static cairo_int_status_t
+_cairo_gl_msaa_compositor_mask_source_operator (const cairo_compositor_t *compositor,
+						cairo_composite_rectangles_t *composite)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+    cairo_gl_context_t *ctx = NULL;
+    cairo_int_status_t status;
+
+    cairo_clip_t *clip = composite->clip;
+    cairo_traps_t traps;
+
+    /* If we have a non-rectangular clip, we can avoid using the stencil buffer
+     * for clipping and just draw the clip polygon. */
+    if (clip) {
+	status = _clip_to_traps (clip, &traps);
+	if (unlikely (status)) {
+	    _cairo_traps_fini (&traps);
+	    return status;
+	}
+    }
+
+    status = _cairo_gl_composite_init (&setup,
+				       CAIRO_OPERATOR_DEST_OUT,
+				       dst,
+				       FALSE /* assume_component_alpha */);
+    if (unlikely (status))
+	return status;
+    status = _cairo_gl_composite_set_source (&setup,
+					     &composite->mask_pattern.base,
+					     &composite->mask_sample_area,
+					     &composite->bounded,
+					     FALSE);
+    if (unlikely (status))
+	goto finish;
+    _cairo_gl_composite_set_multisample (&setup);
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto finish;
+
+    if (! clip)
+	status = _draw_int_rect (ctx, &setup, &composite->bounded);
+    else
+	status = _draw_traps (ctx, &setup, &traps);
+    if (unlikely (status))
+	goto finish;
+
+    /* Now draw the second pass. */
+    status = _cairo_gl_composite_set_operator (&setup, CAIRO_OPERATOR_ADD,
+					       FALSE /* assume_component_alpha */);
+    if (unlikely (status))
+	goto finish;
+    status = _cairo_gl_composite_set_source (&setup,
+					     &composite->source_pattern.base,
+					     &composite->source_sample_area,
+					     &composite->bounded,
+					     FALSE);
+    if (unlikely (status))
+	goto finish;
+    status = _cairo_gl_composite_set_mask (&setup,
+					   &composite->mask_pattern.base,
+					   &composite->source_sample_area,
+					   &composite->bounded,
+					   FALSE);
+    if (unlikely (status))
+	goto finish;
+
+    _cairo_gl_context_set_destination (ctx, dst, setup.multisample);
+
+    status = _cairo_gl_set_operands_and_operator (&setup, ctx);
+    if (unlikely (status))
+	goto finish;
+
+    if (! clip)
+	status = _draw_int_rect (ctx, &setup, &composite->bounded);
+    else
+	status = _draw_traps (ctx, &setup, &traps);
+
+finish:
+    _cairo_gl_composite_fini (&setup);
+    if (ctx)
+	status = _cairo_gl_context_release (ctx, status);
+    if (clip)
+	_cairo_traps_fini (&traps);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_gl_msaa_compositor_mask (const cairo_compositor_t	*compositor,
+				cairo_composite_rectangles_t	*composite)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+    cairo_gl_context_t *ctx = NULL;
+    cairo_int_status_t status;
+    cairo_operator_t op = composite->op;
+    cairo_clip_t *clip = composite->clip;
+
+    if (! can_use_msaa_compositor (dst, CAIRO_ANTIALIAS_DEFAULT))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (composite->op == CAIRO_OPERATOR_CLEAR &&
+	composite->original_mask_pattern != NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* GL compositing operators cannot properly represent a mask operation
+       using the SOURCE compositing operator in one pass. This only matters if
+       there actually is a mask (there isn't in a paint operation) and if the
+       mask isn't totally opaque. */
+    if (op == CAIRO_OPERATOR_SOURCE &&
+	 composite->original_mask_pattern != NULL &&
+	! _cairo_pattern_is_opaque (&composite->mask_pattern.base,
+				    &composite->mask_sample_area)) {
+
+	if (! _cairo_pattern_is_opaque (&composite->source_pattern.base,
+				      &composite->source_sample_area)) {
+	    return _cairo_gl_msaa_compositor_mask_source_operator (compositor, composite);
+	}
+
+	/* If the source is opaque the operation reduces to OVER. */
+	op = CAIRO_OPERATOR_OVER;
+    }
+
+    if (_should_use_unbounded_surface (composite)) {
+	cairo_surface_t* surface = _prepare_unbounded_surface (dst);
+
+	if (unlikely (surface == NULL))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	/* This may be a paint operation. */
+	if (composite->original_mask_pattern == NULL) {
+	    status = _cairo_compositor_paint (compositor, surface,
+					      CAIRO_OPERATOR_SOURCE,
+					      &composite->source_pattern.base,
+					      NULL);
+	} else {
+	    status = _cairo_compositor_mask (compositor, surface,
+					     CAIRO_OPERATOR_SOURCE,
+					     &composite->source_pattern.base,
+					     &composite->mask_pattern.base,
+					     NULL);
+	}
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy (surface);
+	    return status;
+	}
+
+	return _paint_back_unbounded_surface (compositor, composite, surface);
+    }
+
+    status = _cairo_gl_composite_init (&setup,
+				       op,
+				       dst,
+				       FALSE /* assume_component_alpha */);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_gl_composite_set_source (&setup,
+					     &composite->source_pattern.base,
+					     &composite->source_sample_area,
+					     &composite->bounded,
+					     FALSE);
+    if (unlikely (status))
+	goto finish;
+
+    if (composite->original_mask_pattern != NULL) {
+	status = _cairo_gl_composite_set_mask (&setup,
+					       &composite->mask_pattern.base,
+					       &composite->mask_sample_area,
+					       &composite->bounded,
+					       FALSE);
+    }
+    if (unlikely (status))
+	goto finish;
+
+    /* We always use multisampling here, because we do not yet have the smarts
+       to calculate when the clip or the source requires it. */
+     _cairo_gl_composite_set_multisample (&setup);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto finish;
+
+    if (! clip)
+	status = _draw_int_rect (ctx, &setup, &composite->bounded);
+    else
+	status = _cairo_gl_msaa_compositor_draw_clip (ctx, &setup, clip);
+
+finish:
+    _cairo_gl_composite_fini (&setup);
+
+    if (ctx)
+	status = _cairo_gl_context_release (ctx, status);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_gl_msaa_compositor_paint (const cairo_compositor_t	*compositor,
+				 cairo_composite_rectangles_t	*composite)
+{
+    return _cairo_gl_msaa_compositor_mask (compositor, composite);
+}
+
+static cairo_status_t
+_stroke_shaper_add_triangle (void			*closure,
+			     const cairo_point_t	 triangle[3])
+{
+    struct _tristrip_composite_info *info = closure;
+    return _cairo_gl_composite_emit_triangle_as_tristrip (info->ctx,
+							  &info->setup,
+							  triangle);
+}
+
+static cairo_status_t
+_stroke_shaper_add_triangle_fan (void			*closure,
+				 const cairo_point_t	*midpoint,
+				 const cairo_point_t	*points,
+				 int			 npoints)
+{
+    struct _tristrip_composite_info *info = closure;
+    return _draw_triangle_fan (info->ctx, &info->setup,
+			       midpoint, points, npoints);
+}
+
+static cairo_status_t
+_stroke_shaper_add_quad (void			*closure,
+			 const cairo_point_t	 quad[4])
+{
+    struct _tristrip_composite_info *info = closure;
+    return _cairo_gl_composite_emit_quad_as_tristrip (info->ctx, &info->setup,
+						      quad);
+}
+
+static cairo_int_status_t
+_prevent_overlapping_strokes (cairo_gl_context_t		*ctx,
+			      cairo_gl_composite_t		*setup,
+			      cairo_composite_rectangles_t	*composite,
+			      const cairo_path_fixed_t		*path,
+			      const cairo_stroke_style_t	*style,
+			      const cairo_matrix_t		*ctm)
+{
+    cairo_rectangle_int_t stroke_extents;
+
+    if (! _cairo_gl_ensure_stencil (ctx, setup->dst))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (_cairo_pattern_is_opaque (&composite->source_pattern.base,
+				  &composite->source_sample_area))
+	return CAIRO_INT_STATUS_SUCCESS;
+
+   if (glIsEnabled (GL_STENCIL_TEST) == FALSE) {
+	cairo_bool_t scissor_was_enabled;
+
+       /* In case we have pending operations we have to flush before
+	  adding the stencil buffer. */
+       _cairo_gl_composite_flush (ctx);
+
+	/* Enable the stencil buffer, even if we are not using it for clipping,
+	   so we can use it below to prevent overlapping shapes. We initialize
+	   it all to one here which represents infinite clip. */
+	glDepthMask (GL_TRUE);
+	glEnable (GL_STENCIL_TEST);
+
+	/* We scissor here so that we don't have to clear the entire stencil
+	 * buffer. If the scissor test is already enabled, it was enabled
+	 * for clipping. In that case, instead of calculating an intersection,
+	 * we just reuse it, and risk clearing too much. */
+	scissor_was_enabled = glIsEnabled (GL_SCISSOR_TEST);
+	if (! scissor_was_enabled) {
+	    _cairo_path_fixed_approximate_stroke_extents (path, style, ctm,
+							  FALSE, /* is_vector */
+							  &stroke_extents);
+	    _cairo_gl_scissor_to_rectangle (setup->dst, &stroke_extents);
+	}
+	glClearStencil (1);
+	glClear (GL_STENCIL_BUFFER_BIT);
+	if (! scissor_was_enabled)
+	    glDisable (GL_SCISSOR_TEST);
+
+	glStencilFunc (GL_EQUAL, 1, 1);
+    }
+
+    /* This means that once we draw to a particular pixel nothing else can
+       be drawn there until the stencil buffer is reset or the stencil test
+       is disabled. */
+    glStencilOp (GL_ZERO, GL_ZERO, GL_ZERO);
+
+    _cairo_clip_destroy (setup->dst->clip_on_stencil_buffer);
+    setup->dst->clip_on_stencil_buffer = NULL;
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static void
+query_surface_capabilities (cairo_gl_surface_t *surface)
+{
+    GLint samples, stencil_bits;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    /* Texture surfaces are create in such a way that they always
+       have stencil and multisample bits if possible, so we don't
+       need to query their capabilities lazily. */
+    if (_cairo_gl_surface_is_texture (surface))
+	return;
+    if (surface->stencil_and_msaa_caps_initialized)
+	return;
+
+    surface->stencil_and_msaa_caps_initialized = TRUE;
+    surface->supports_stencil = FALSE;
+    surface->supports_msaa = FALSE;
+
+    status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+    if (unlikely (status))
+	return;
+
+    _cairo_gl_context_set_destination (ctx, surface, FALSE);
+
+    glGetIntegerv(GL_SAMPLES, &samples);
+    glGetIntegerv(GL_STENCIL_BITS, &stencil_bits);
+    surface->supports_stencil = stencil_bits > 0;
+    surface->supports_msaa = samples > 1;
+    surface->num_samples = samples;
+
+    status = _cairo_gl_context_release (ctx, status);
+}
+
+static cairo_int_status_t
+_cairo_gl_msaa_compositor_stroke (const cairo_compositor_t	*compositor,
+				  cairo_composite_rectangles_t	*composite,
+				  const cairo_path_fixed_t	*path,
+				  const cairo_stroke_style_t	*style,
+				  const cairo_matrix_t		*ctm,
+				  const cairo_matrix_t		*ctm_inverse,
+				  double			 tolerance,
+				  cairo_antialias_t		 antialias)
+{
+    cairo_int_status_t status;
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+    struct _tristrip_composite_info info;
+
+    if (! can_use_msaa_compositor (dst, antialias))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (composite->is_bounded == FALSE) {
+	cairo_surface_t* surface = _prepare_unbounded_surface (dst);
+
+	if (unlikely (surface == NULL))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	status = _cairo_compositor_stroke (compositor, surface,
+					   CAIRO_OPERATOR_SOURCE,
+					   &composite->source_pattern.base,
+					   path, style, ctm, ctm_inverse,
+					   tolerance, antialias, NULL);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (surface);
+	    return status;
+	}
+
+	return _paint_back_unbounded_surface (compositor, composite, surface);
+    }
+
+    status = _cairo_gl_composite_init (&info.setup,
+				       composite->op,
+				       dst,
+				       FALSE /* assume_component_alpha */);
+    if (unlikely (status))
+	return status;
+
+    info.ctx = NULL;
+
+    status = _cairo_gl_composite_set_source (&info.setup,
+					     &composite->source_pattern.base,
+					     &composite->source_sample_area,
+					     &composite->bounded,
+					     FALSE);
+    if (unlikely (status))
+	goto finish;
+
+    _cairo_gl_msaa_compositor_set_clip (composite, &info.setup);
+    if (antialias != CAIRO_ANTIALIAS_NONE)
+	_cairo_gl_composite_set_multisample (&info.setup);
+
+    status = _cairo_gl_composite_begin (&info.setup, &info.ctx);
+    if (unlikely (status))
+	goto finish;
+
+    status = _prevent_overlapping_strokes (info.ctx, &info.setup,
+					   composite, path, style, ctm);
+    if (unlikely (status))
+	goto finish;
+
+    status = _cairo_path_fixed_stroke_to_shaper ((cairo_path_fixed_t *) path,
+						 style,
+						 ctm,
+						 ctm_inverse,
+						 tolerance,
+						 _stroke_shaper_add_triangle,
+						 _stroke_shaper_add_triangle_fan,
+						 _stroke_shaper_add_quad,
+						 &info);
+    if (unlikely (status))
+	goto finish;
+
+finish:
+    _cairo_gl_composite_fini (&info.setup);
+
+    if (info.ctx)
+	status = _cairo_gl_context_release (info.ctx, status);
+
+    return status;
+}
+
+static cairo_int_status_t
+_draw_simple_quad_path (cairo_gl_context_t *ctx,
+			cairo_gl_composite_t *setup,
+			const cairo_path_fixed_t *path)
+{
+    cairo_point_t triangle[3];
+    cairo_int_status_t status;
+    const cairo_point_t *points;
+
+    points = cairo_path_head (path)->points;
+    triangle[0] = points[0];
+    triangle[1] = points[1];
+    triangle[2] = points[2];
+    status = _cairo_gl_composite_emit_triangle_as_tristrip (ctx, setup, triangle);
+    if (status)
+	return status;
+
+    triangle[0] = points[2];
+    triangle[1] = points[3];
+    triangle[2] = points[0];
+    return _cairo_gl_composite_emit_triangle_as_tristrip (ctx, setup, triangle);
+}
+
+static cairo_int_status_t
+_cairo_gl_msaa_compositor_fill (const cairo_compositor_t	*compositor,
+				cairo_composite_rectangles_t	*composite,
+				const cairo_path_fixed_t	*path,
+				cairo_fill_rule_t		 fill_rule,
+				double				 tolerance,
+				cairo_antialias_t		 antialias)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+    cairo_gl_context_t *ctx = NULL;
+    cairo_int_status_t status;
+    cairo_traps_t traps;
+    cairo_bool_t draw_path_with_traps;
+
+    if (! can_use_msaa_compositor (dst, antialias))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (composite->is_bounded == FALSE) {
+	cairo_surface_t* surface = _prepare_unbounded_surface (dst);
+
+	if (unlikely (surface == NULL))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+
+	status = _cairo_compositor_fill (compositor, surface,
+					 CAIRO_OPERATOR_SOURCE,
+					 &composite->source_pattern.base,
+					 path, fill_rule, tolerance,
+					 antialias, NULL);
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy (surface);
+	    return status;
+	}
+
+	return _paint_back_unbounded_surface (compositor, composite, surface);
+    }
+
+    draw_path_with_traps = ! _cairo_path_fixed_is_simple_quad (path);
+
+    if (draw_path_with_traps) {
+	_cairo_traps_init (&traps);
+	status = _cairo_path_fixed_fill_to_traps (path, fill_rule, tolerance, &traps);
+	if (unlikely (status))
+	    goto cleanup_traps;
+    }
+
+    status = _cairo_gl_composite_init (&setup,
+				       composite->op,
+				       dst,
+				       FALSE /* assume_component_alpha */);
+    if (unlikely (status))
+	goto cleanup_traps;
+
+    status = _cairo_gl_composite_set_source (&setup,
+					     &composite->source_pattern.base,
+					     &composite->source_sample_area,
+					     &composite->bounded,
+					     FALSE);
+    if (unlikely (status))
+	goto cleanup_setup;
+
+    _cairo_gl_msaa_compositor_set_clip (composite, &setup);
+    if (antialias != CAIRO_ANTIALIAS_NONE)
+	_cairo_gl_composite_set_multisample (&setup);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto cleanup_setup;
+
+    if (! draw_path_with_traps)
+	status = _draw_simple_quad_path (ctx, &setup, path);
+    else
+	status = _draw_traps (ctx, &setup, &traps);
+    if (unlikely (status))
+	goto cleanup_setup;
+
+cleanup_setup:
+    _cairo_gl_composite_fini (&setup);
+
+    if (ctx)
+	status = _cairo_gl_context_release (ctx, status);
+
+cleanup_traps:
+    if (draw_path_with_traps)
+	_cairo_traps_fini (&traps);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_gl_msaa_compositor_glyphs (const cairo_compositor_t	*compositor,
+				  cairo_composite_rectangles_t	*composite,
+				  cairo_scaled_font_t		*scaled_font,
+				  cairo_glyph_t			*glyphs,
+				  int				 num_glyphs,
+				  cairo_bool_t			 overlap)
+{
+    cairo_int_status_t status;
+    cairo_surface_t *src = NULL;
+    int src_x, src_y;
+    cairo_composite_glyphs_info_t info;
+
+    cairo_gl_surface_t *dst = (cairo_gl_surface_t *) composite->surface;
+
+    query_surface_capabilities (dst);
+    if (! dst->supports_stencil)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (composite->op == CAIRO_OPERATOR_CLEAR)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (composite->is_bounded == FALSE) {
+	cairo_surface_t* surface = _prepare_unbounded_surface (dst);
+
+	if (unlikely (surface == NULL))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	status = _cairo_compositor_glyphs (compositor, surface,
+					   CAIRO_OPERATOR_SOURCE,
+					   &composite->source_pattern.base,
+					   glyphs, num_glyphs,
+					   scaled_font, composite->clip);
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy (surface);
+	    return status;
+	}
+
+	return _paint_back_unbounded_surface (compositor, composite, surface);
+    }
+
+    src = _cairo_gl_pattern_to_source (&dst->base,
+				       &composite->source_pattern.base,
+				       FALSE,
+				       &composite->bounded,
+				       &composite->source_sample_area,
+				       &src_x, &src_y);
+    if (unlikely (src->status)) {
+	status = src->status;
+	goto finish;
+    }
+
+    status = _cairo_gl_check_composite_glyphs (composite,
+					       scaled_font, glyphs,
+					       &num_glyphs);
+    if (unlikely (status != CAIRO_INT_STATUS_SUCCESS))
+	goto finish;
+
+    info.font = scaled_font;
+    info.glyphs = glyphs;
+    info.num_glyphs = num_glyphs;
+    info.use_mask = overlap || ! composite->is_bounded ||
+		    composite->op == CAIRO_OPERATOR_SOURCE;
+    info.extents = composite->bounded;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    status = _cairo_gl_composite_glyphs_with_clip (dst, composite->op,
+						   src, src_x, src_y,
+						   0, 0, &info,
+						   composite->clip);
+
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+finish:
+    if (src)
+	cairo_surface_destroy (src);
+
+    return status;
+}
+
+static void
+_cairo_gl_msaa_compositor_init (cairo_compositor_t	 *compositor,
+				const cairo_compositor_t *delegate)
+{
+    compositor->delegate = delegate;
+
+    compositor->paint = _cairo_gl_msaa_compositor_paint;
+    compositor->mask = _cairo_gl_msaa_compositor_mask;
+    compositor->fill = _cairo_gl_msaa_compositor_fill;
+    compositor->stroke = _cairo_gl_msaa_compositor_stroke;
+    compositor->glyphs = _cairo_gl_msaa_compositor_glyphs;
+}
+
+const cairo_compositor_t *
+_cairo_gl_msaa_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_compositor_t compositor;
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_gl_msaa_compositor_init (&compositor,
+					_cairo_gl_span_compositor_get ());
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-operand.c b/libs/cairo-1.16.0/src/cairo-gl-operand.c
new file mode 100644
index 0000000..a754bde
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-operand.c
@@ -0,0 +1,793 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-surface-subsurface-inline.h"
+
+static cairo_int_status_t
+_cairo_gl_create_gradient_texture (cairo_gl_surface_t *dst,
+				   const cairo_gradient_pattern_t *pattern,
+				   cairo_gl_gradient_t **gradient)
+{
+    cairo_gl_context_t *ctx;
+    cairo_status_t status;
+
+    status = _cairo_gl_context_acquire (dst->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_gl_gradient_create (ctx, pattern->n_stops, pattern->stops, gradient);
+
+    return _cairo_gl_context_release (ctx, status);
+}
+
+static cairo_status_t
+_cairo_gl_subsurface_clone_operand_init (cairo_gl_operand_t *operand,
+					 const cairo_pattern_t *_src,
+					 cairo_gl_surface_t *dst,
+					 const cairo_rectangle_int_t *sample,
+					 const cairo_rectangle_int_t *extents,
+					 cairo_bool_t use_texgen)
+{
+    const cairo_surface_pattern_t *src = (cairo_surface_pattern_t *)_src;
+    cairo_surface_pattern_t local_pattern;
+    cairo_surface_subsurface_t *sub;
+    cairo_gl_surface_t *surface;
+    cairo_gl_context_t *ctx;
+    cairo_surface_attributes_t *attributes;
+    cairo_status_t status;
+
+    sub = (cairo_surface_subsurface_t *) src->surface;
+
+    if (sub->snapshot &&
+	sub->snapshot->type == CAIRO_SURFACE_TYPE_GL &&
+	sub->snapshot->device == dst->base.device)
+    {
+	surface = (cairo_gl_surface_t *)
+	    cairo_surface_reference (sub->snapshot);
+    }
+    else
+    {
+	status = _cairo_gl_context_acquire (dst->base.device, &ctx);
+	if (unlikely (status))
+	    return status;
+
+	/* XXX Trim surface to the sample area within the subsurface? */
+	surface = (cairo_gl_surface_t *)
+	    _cairo_gl_surface_create_scratch (ctx,
+					      sub->target->content,
+					      sub->extents.width,
+					      sub->extents.height);
+	if (surface->base.status)
+	    return _cairo_gl_context_release (ctx, surface->base.status);
+
+	_cairo_pattern_init_for_surface (&local_pattern, sub->target);
+	cairo_matrix_init_translate (&local_pattern.base.matrix,
+				     sub->extents.x, sub->extents.y);
+	local_pattern.base.filter = CAIRO_FILTER_NEAREST;
+	status = _cairo_surface_paint (&surface->base,
+				       CAIRO_OPERATOR_SOURCE,
+				       &local_pattern.base,
+				       NULL);
+	_cairo_pattern_fini (&local_pattern.base);
+
+	status = _cairo_gl_context_release (ctx, status);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&surface->base);
+	    return status;
+	}
+
+	_cairo_surface_subsurface_set_snapshot (&sub->base, &surface->base);
+    }
+
+    status = _cairo_gl_surface_resolve_multisampling (surface);
+    if (unlikely (status))
+	return status;
+
+    attributes = &operand->texture.attributes;
+
+    operand->type = CAIRO_GL_OPERAND_TEXTURE;
+    operand->texture.surface = surface;
+    operand->texture.owns_surface = surface;
+    operand->texture.tex = surface->tex;
+
+    if (_cairo_gl_device_requires_power_of_two_textures (dst->base.device)) {
+	attributes->matrix = src->base.matrix;
+    } else {
+	cairo_matrix_t m;
+
+	cairo_matrix_init_scale (&m,
+				 1.0 / surface->width,
+				 1.0 / surface->height);
+	cairo_matrix_multiply (&attributes->matrix, &src->base.matrix, &m);
+    }
+
+    attributes->extend = src->base.extend;
+    attributes->filter = src->base.filter;
+    attributes->has_component_alpha = src->base.has_component_alpha;
+
+    operand->texture.texgen = use_texgen;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_subsurface_operand_init (cairo_gl_operand_t *operand,
+				   const cairo_pattern_t *_src,
+				   cairo_gl_surface_t *dst,
+				   const cairo_rectangle_int_t *sample,
+				   const cairo_rectangle_int_t *extents,
+				   cairo_bool_t use_texgen)
+{
+    const cairo_surface_pattern_t *src = (cairo_surface_pattern_t *)_src;
+    cairo_surface_subsurface_t *sub;
+    cairo_gl_surface_t *surface;
+    cairo_surface_attributes_t *attributes;
+    cairo_int_status_t status;
+
+    sub = (cairo_surface_subsurface_t *) src->surface;
+
+    if (sample->x < 0 || sample->y < 0 ||
+	sample->x + sample->width  > sub->extents.width ||
+	sample->y + sample->height > sub->extents.height)
+    {
+	return _cairo_gl_subsurface_clone_operand_init (operand, _src,
+							dst, sample, extents,
+							use_texgen);
+    }
+
+    surface = (cairo_gl_surface_t *) sub->target;
+    if (surface->base.device && surface->base.device != dst->base.device)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_gl_surface_is_texture (surface))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_gl_surface_resolve_multisampling (surface);
+    if (unlikely (status))
+	return status;
+
+    /* Translate the matrix from
+     * (unnormalized src -> unnormalized src) to
+     * (unnormalized dst -> unnormalized src)
+     */
+    _cairo_gl_operand_copy(operand, &surface->operand);
+
+    attributes = &operand->texture.attributes;
+    attributes->matrix = src->base.matrix;
+    attributes->matrix.x0 += sub->extents.x;
+    attributes->matrix.y0 += sub->extents.y;
+    cairo_matrix_multiply (&attributes->matrix,
+			   &attributes->matrix,
+			   &surface->operand.texture.attributes.matrix);
+
+    attributes->extend = src->base.extend;
+    attributes->filter = src->base.filter;
+    attributes->has_component_alpha = src->base.has_component_alpha;
+
+    operand->texture.texgen = use_texgen;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_surface_operand_init (cairo_gl_operand_t *operand,
+				const cairo_pattern_t *_src,
+				cairo_gl_surface_t *dst,
+				const cairo_rectangle_int_t *sample,
+				const cairo_rectangle_int_t *extents,
+				cairo_bool_t use_texgen)
+{
+    const cairo_surface_pattern_t *src = (cairo_surface_pattern_t *)_src;
+    cairo_gl_surface_t *surface;
+    cairo_surface_attributes_t *attributes;
+    cairo_int_status_t status;
+
+    surface = (cairo_gl_surface_t *) src->surface;
+    if (surface->base.type != CAIRO_SURFACE_TYPE_GL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface->base.backend->type != CAIRO_SURFACE_TYPE_GL) {
+	if (_cairo_surface_is_subsurface (&surface->base))
+	    return _cairo_gl_subsurface_operand_init (operand, _src, dst,
+						      sample, extents,
+						      use_texgen);
+
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (surface->base.device && surface->base.device != dst->base.device)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface->base.device && ! _cairo_gl_surface_is_texture (surface))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_gl_surface_resolve_multisampling (surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gl_operand_copy(operand, &surface->operand);
+
+    attributes = &operand->texture.attributes;
+    cairo_matrix_multiply (&attributes->matrix,
+			   &src->base.matrix,
+			   &attributes->matrix);
+
+    attributes->extend = src->base.extend;
+    attributes->filter = src->base.filter;
+    attributes->has_component_alpha = src->base.has_component_alpha;
+
+    operand->texture.texgen = use_texgen;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_pattern_texture_setup (cairo_gl_operand_t *operand,
+				 const cairo_pattern_t *_src,
+				 cairo_gl_surface_t *dst,
+				 const cairo_rectangle_int_t *extents)
+{
+    cairo_status_t status;
+    cairo_gl_surface_t *surface;
+    cairo_gl_context_t *ctx;
+    cairo_image_surface_t *image;
+    cairo_bool_t src_is_gl_surface = FALSE;
+    cairo_rectangle_int_t map_extents;
+
+    if (_src->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_t* src_surface = ((cairo_surface_pattern_t *) _src)->surface;
+	src_is_gl_surface = src_surface->type == CAIRO_SURFACE_TYPE_GL;
+    }
+
+    status = _cairo_gl_context_acquire (dst->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    surface = (cairo_gl_surface_t *)
+	_cairo_gl_surface_create_scratch (ctx,
+					  CAIRO_CONTENT_COLOR_ALPHA,
+					  extents->width, extents->height);
+    map_extents = *extents;
+    map_extents.x = map_extents.y = 0;
+    image = _cairo_surface_map_to_image (&surface->base, &map_extents);
+
+    /* If the pattern is a GL surface, it belongs to some other GL context,
+       so we need to release this device while we paint it to the image. */
+    if (src_is_gl_surface) {
+	status = _cairo_gl_context_release (ctx, status);
+	if (unlikely (status)) {
+	    _cairo_surface_unmap_image (&surface->base, image);
+	    goto fail;
+	}
+    }
+
+    status = _cairo_surface_offset_paint (&image->base, extents->x, extents->y,
+					  CAIRO_OPERATOR_SOURCE, _src, NULL);
+
+    if (src_is_gl_surface) {
+	status = _cairo_gl_context_acquire (dst->base.device, &ctx);
+	if (unlikely (status)) {
+	    _cairo_surface_unmap_image (&surface->base, image);
+	    goto fail;
+	}
+    }
+
+    status = _cairo_surface_unmap_image (&surface->base, image);
+    status = _cairo_gl_context_release (ctx, status);
+    if (unlikely (status))
+	goto fail;
+
+    *operand = surface->operand;
+    operand->texture.owns_surface = surface;
+    operand->texture.attributes.matrix.x0 -= extents->x * operand->texture.attributes.matrix.xx;
+    operand->texture.attributes.matrix.y0 -= extents->y * operand->texture.attributes.matrix.yy;
+    return CAIRO_STATUS_SUCCESS;
+
+fail:
+    cairo_surface_destroy (&surface->base);
+    return status;
+}
+
+void
+_cairo_gl_solid_operand_init (cairo_gl_operand_t *operand,
+			      const cairo_color_t *color)
+{
+    operand->type = CAIRO_GL_OPERAND_CONSTANT;
+    operand->constant.color[0] = color->red   * color->alpha;
+    operand->constant.color[1] = color->green * color->alpha;
+    operand->constant.color[2] = color->blue  * color->alpha;
+    operand->constant.color[3] = color->alpha;
+}
+
+void
+_cairo_gl_operand_translate (cairo_gl_operand_t *operand,
+			     double tx, double ty)
+{
+    switch (operand->type) {
+    case CAIRO_GL_OPERAND_TEXTURE:
+	operand->texture.attributes.matrix.x0 -= tx * operand->texture.attributes.matrix.xx;
+	operand->texture.attributes.matrix.y0 -= ty * operand->texture.attributes.matrix.yy;
+	break;
+
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	operand->gradient.m.x0 -= tx * operand->gradient.m.xx;
+	operand->gradient.m.y0 -= ty * operand->gradient.m.yy;
+	break;
+
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+    case CAIRO_GL_OPERAND_COUNT:
+    default:
+	break;
+    }
+}
+
+static cairo_status_t
+_cairo_gl_gradient_operand_init (cairo_gl_operand_t *operand,
+				 const cairo_pattern_t *pattern,
+				 cairo_gl_surface_t *dst,
+				 cairo_bool_t use_texgen)
+{
+    const cairo_gradient_pattern_t *gradient = (const cairo_gradient_pattern_t *)pattern;
+    cairo_status_t status;
+
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+    if (! _cairo_gl_device_has_glsl (dst->base.device))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_gl_create_gradient_texture (dst,
+						gradient,
+						&operand->gradient.gradient);
+    if (unlikely (status))
+	return status;
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
+	double x0, y0, dx, dy, sf, offset;
+
+	dx = linear->pd2.x - linear->pd1.x;
+	dy = linear->pd2.y - linear->pd1.y;
+	sf = 1.0 / (dx * dx + dy * dy);
+	dx *= sf;
+	dy *= sf;
+
+	x0 = linear->pd1.x;
+	y0 = linear->pd1.y;
+	offset = dx * x0 + dy * y0;
+
+	operand->type = CAIRO_GL_OPERAND_LINEAR_GRADIENT;
+
+	cairo_matrix_init (&operand->gradient.m, dx, 0, dy, 1, -offset, 0);
+	if (! _cairo_matrix_is_identity (&pattern->matrix)) {
+	    cairo_matrix_multiply (&operand->gradient.m,
+				   &pattern->matrix,
+				   &operand->gradient.m);
+	}
+    } else {
+	cairo_matrix_t m;
+	cairo_circle_double_t circles[2];
+	double x0, y0, r0, dx, dy, dr;
+
+	/*
+	 * Some fragment shader implementations use half-floats to
+	 * represent numbers, so the maximum number they can represent
+	 * is about 2^14. Some intermediate computations used in the
+	 * radial gradient shaders can produce results of up to 2*k^4.
+	 * Setting k=8 makes the maximum result about 8192 (assuming
+	 * that the extreme circles are not much smaller than the
+	 * destination image).
+	 */
+	_cairo_gradient_pattern_fit_to_range (gradient, 8.,
+					      &operand->gradient.m, circles);
+
+	x0 = circles[0].center.x;
+	y0 = circles[0].center.y;
+	r0 = circles[0].radius;
+	dx = circles[1].center.x - x0;
+	dy = circles[1].center.y - y0;
+	dr = circles[1].radius   - r0;
+
+	operand->gradient.a = dx * dx + dy * dy - dr * dr;
+	operand->gradient.radius_0 = r0;
+	operand->gradient.circle_d.center.x = dx;
+	operand->gradient.circle_d.center.y = dy;
+	operand->gradient.circle_d.radius   = dr;
+
+	if (operand->gradient.a == 0)
+	    operand->type = CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0;
+	else if (pattern->extend == CAIRO_EXTEND_NONE)
+	    operand->type = CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE;
+	else
+	    operand->type = CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT;
+
+	cairo_matrix_init_translate (&m, -x0, -y0);
+	cairo_matrix_multiply (&operand->gradient.m,
+			       &operand->gradient.m,
+			       &m);
+    }
+
+    operand->gradient.extend = pattern->extend;
+    operand->gradient.texgen = use_texgen;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gl_operand_copy (cairo_gl_operand_t *dst,
+			const cairo_gl_operand_t *src)
+{
+    *dst = *src;
+    switch (dst->type) {
+    case CAIRO_GL_OPERAND_CONSTANT:
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	_cairo_gl_gradient_reference (dst->gradient.gradient);
+	break;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	cairo_surface_reference (&dst->texture.owns_surface->base);
+	break;
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+	break;
+    }
+}
+
+void
+_cairo_gl_operand_destroy (cairo_gl_operand_t *operand)
+{
+    switch (operand->type) {
+    case CAIRO_GL_OPERAND_CONSTANT:
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	_cairo_gl_gradient_destroy (operand->gradient.gradient);
+	break;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	cairo_surface_destroy (&operand->texture.owns_surface->base);
+	break;
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+	break;
+    }
+
+    operand->type = CAIRO_GL_OPERAND_NONE;
+}
+
+cairo_int_status_t
+_cairo_gl_operand_init (cairo_gl_operand_t *operand,
+			const cairo_pattern_t *pattern,
+			cairo_gl_surface_t *dst,
+			const cairo_rectangle_int_t *sample,
+			const cairo_rectangle_int_t *extents,
+			cairo_bool_t use_texgen)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s: type=%d\n", __FUNCTION__, pattern->type));
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	_cairo_gl_solid_operand_init (operand,
+				      &((cairo_solid_pattern_t *) pattern)->color);
+	return CAIRO_STATUS_SUCCESS;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	status = _cairo_gl_surface_operand_init (operand, pattern, dst,
+						 sample, extents, use_texgen);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    break;
+
+	return status;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	status = _cairo_gl_gradient_operand_init (operand, pattern, dst,
+						  use_texgen);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    break;
+
+	return status;
+
+    default:
+    case CAIRO_PATTERN_TYPE_MESH:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	break;
+    }
+
+    return _cairo_gl_pattern_texture_setup (operand, pattern, dst, extents);
+}
+
+cairo_filter_t
+_cairo_gl_operand_get_filter (cairo_gl_operand_t *operand)
+{
+    cairo_filter_t filter;
+
+    switch ((int) operand->type) {
+    case CAIRO_GL_OPERAND_TEXTURE:
+	filter = operand->texture.attributes.filter;
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	filter = CAIRO_FILTER_BILINEAR;
+	break;
+    default:
+	filter = CAIRO_FILTER_DEFAULT;
+	break;
+    }
+
+    return filter;
+}
+
+GLint
+_cairo_gl_operand_get_gl_filter (cairo_gl_operand_t *operand)
+{
+    cairo_filter_t filter = _cairo_gl_operand_get_filter (operand);
+
+    return filter != CAIRO_FILTER_FAST && filter != CAIRO_FILTER_NEAREST ?
+	   GL_LINEAR :
+	   GL_NEAREST;
+}
+
+cairo_extend_t
+_cairo_gl_operand_get_extend (cairo_gl_operand_t *operand)
+{
+    cairo_extend_t extend;
+
+    switch ((int) operand->type) {
+    case CAIRO_GL_OPERAND_TEXTURE:
+	extend = operand->texture.attributes.extend;
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	extend = operand->gradient.extend;
+	break;
+    default:
+	extend = CAIRO_EXTEND_NONE;
+	break;
+    }
+
+    return extend;
+}
+
+
+void
+_cairo_gl_operand_bind_to_shader (cairo_gl_context_t *ctx,
+				  cairo_gl_operand_t *operand,
+				  cairo_gl_tex_t      tex_unit)
+{
+    const cairo_matrix_t *texgen = NULL;
+
+    switch (operand->type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+	return;
+
+    case CAIRO_GL_OPERAND_CONSTANT:
+	_cairo_gl_shader_bind_vec4 (ctx,
+				    ctx->current_shader->constant_location[tex_unit],
+				    operand->constant.color[0],
+				    operand->constant.color[1],
+				    operand->constant.color[2],
+				    operand->constant.color[3]);
+	return;
+
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	_cairo_gl_shader_bind_float  (ctx,
+				      ctx->current_shader->a_location[tex_unit],
+				      operand->gradient.a);
+	/* fall through */
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+	_cairo_gl_shader_bind_vec3   (ctx,
+				      ctx->current_shader->circle_d_location[tex_unit],
+				      operand->gradient.circle_d.center.x,
+				      operand->gradient.circle_d.center.y,
+				      operand->gradient.circle_d.radius);
+	_cairo_gl_shader_bind_float  (ctx,
+				      ctx->current_shader->radius_0_location[tex_unit],
+				      operand->gradient.radius_0);
+	/* fall through */
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_TEXTURE:
+	/*
+	 * For GLES2 we use shaders to implement GL_CLAMP_TO_BORDER (used
+	 * with CAIRO_EXTEND_NONE). When bilinear filtering is enabled,
+	 * these shaders need the texture dimensions for their calculations.
+	 */
+	if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	     ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) &&
+	    _cairo_gl_operand_get_extend (operand) == CAIRO_EXTEND_NONE &&
+	    _cairo_gl_operand_get_gl_filter (operand) == GL_LINEAR)
+	{
+	    float width, height;
+	    if (operand->type == CAIRO_GL_OPERAND_TEXTURE) {
+		width = operand->texture.surface->width;
+		height = operand->texture.surface->height;
+	    }
+	    else {
+		width = operand->gradient.gradient->cache_entry.size,
+		height = 1;
+	    }
+	    _cairo_gl_shader_bind_vec2 (ctx,
+					ctx->current_shader->texdims_location[tex_unit],
+					width, height);
+	}
+	break;
+    }
+
+    if (operand->type == CAIRO_GL_OPERAND_TEXTURE) {
+	    if (operand->texture.texgen)
+		    texgen = &operand->texture.attributes.matrix;
+    } else {
+	    if (operand->gradient.texgen)
+		    texgen = &operand->gradient.m;
+    }
+    if (texgen) {
+	    _cairo_gl_shader_bind_matrix(ctx,
+					 ctx->current_shader->texgen_location[tex_unit],
+					 texgen);
+    }
+}
+
+
+cairo_bool_t
+_cairo_gl_operand_needs_setup (cairo_gl_operand_t *dest,
+			       cairo_gl_operand_t *source,
+			       unsigned int        vertex_offset)
+{
+    if (dest->type != source->type)
+	return TRUE;
+    if (dest->vertex_offset != vertex_offset)
+	return TRUE;
+
+    switch (source->type) {
+    case CAIRO_GL_OPERAND_NONE:
+	return FALSE;
+    case CAIRO_GL_OPERAND_CONSTANT:
+	return dest->constant.color[0] != source->constant.color[0] ||
+	       dest->constant.color[1] != source->constant.color[1] ||
+	       dest->constant.color[2] != source->constant.color[2] ||
+	       dest->constant.color[3] != source->constant.color[3];
+    case CAIRO_GL_OPERAND_TEXTURE:
+	return dest->texture.surface != source->texture.surface ||
+	       dest->texture.attributes.extend != source->texture.attributes.extend ||
+	       dest->texture.attributes.filter != source->texture.attributes.filter ||
+	       dest->texture.attributes.has_component_alpha != source->texture.attributes.has_component_alpha;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	/* XXX: improve this */
+	return TRUE;
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+    return TRUE;
+}
+
+unsigned int
+_cairo_gl_operand_get_vertex_size (const cairo_gl_operand_t *operand)
+{
+    switch (operand->type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+	return 0;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	return operand->texture.texgen ? 0 : 2 * sizeof (GLfloat);
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	return operand->gradient.texgen ? 0 : 2 * sizeof (GLfloat);
+    }
+}
+
+void
+_cairo_gl_operand_emit (cairo_gl_operand_t *operand,
+			GLfloat ** vb,
+			GLfloat x,
+			GLfloat y)
+{
+    switch (operand->type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	if (! operand->gradient.texgen) {
+	    double s = x;
+	    double t = y;
+
+	    cairo_matrix_transform_point (&operand->gradient.m, &s, &t);
+
+	    *(*vb)++ = s;
+	    *(*vb)++ = t;
+	}
+	break;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	if (! operand->texture.texgen) {
+	    cairo_surface_attributes_t *src_attributes = &operand->texture.attributes;
+	    double s = x;
+	    double t = y;
+
+	    cairo_matrix_transform_point (&src_attributes->matrix, &s, &t);
+	    *(*vb)++ = s;
+	    *(*vb)++ = t;
+	}
+	break;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-private.h b/libs/cairo-1.16.0/src/cairo-gl-private.h
new file mode 100644
index 0000000..f02a587
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-private.h
@@ -0,0 +1,865 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 2011 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ *	T. Zachary Laine <whatwasthataddress@gmail.com>
+ *	Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#ifndef CAIRO_GL_PRIVATE_H
+#define CAIRO_GL_PRIVATE_H
+
+#define GL_GLEXT_PROTOTYPES
+
+#include "cairoint.h"
+
+#include "cairo-gl.h"
+#include "cairo-gl-gradient-private.h"
+
+#include "cairo-device-private.h"
+#include "cairo-error-private.h"
+#include "cairo-rtree-private.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-spans-compositor-private.h"
+#include "cairo-array-private.h"
+
+#include <assert.h>
+
+#if CAIRO_HAS_GLESV3_SURFACE
+#include <GLES3/gl3.h>
+#include <GLES3/gl3ext.h>
+#elif CAIRO_HAS_GLESV2_SURFACE
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#elif CAIRO_HAS_GL_SURFACE
+#include <GL/gl.h>
+#include <GL/glext.h>
+#endif
+
+#include "cairo-gl-ext-def-private.h"
+
+#define DEBUG_GL 0
+
+#if DEBUG_GL && __GNUC__
+#define UNSUPPORTED(reason) ({ \
+    fprintf (stderr, \
+	     "cairo-gl: hit unsupported operation in %s(), line %d: %s\n", \
+	     __FUNCTION__, __LINE__, reason); \
+    CAIRO_INT_STATUS_UNSUPPORTED; \
+})
+#else
+#define UNSUPPORTED(reason) CAIRO_INT_STATUS_UNSUPPORTED
+#endif
+
+#define CAIRO_GL_VERSION_ENCODE(major, minor) (	\
+	  ((major) * 256)			\
+	+ ((minor) *   1))
+
+/* maximal number of shaders we keep in the cache.
+ * Random number that is hopefully big enough to not cause many cache evictions. */
+#define CAIRO_GL_MAX_SHADERS_PER_CONTEXT 64
+
+/* VBO size that we allocate, smaller size means we gotta flush more often,
+ * but larger means hogging more memory and can cause trouble for drivers
+ * (especially on embedded devices). Use the CAIRO_GL_VBO_SIZE environment
+ * variable to set this to a different size. */
+#define CAIRO_GL_VBO_SIZE_DEFAULT (1024*1024)
+
+typedef struct _cairo_gl_surface cairo_gl_surface_t;
+
+/* GL flavor is the type of GL supported by the underlying platform. */
+typedef enum cairo_gl_flavor {
+    CAIRO_GL_FLAVOR_NONE = 0,
+    CAIRO_GL_FLAVOR_DESKTOP = 1,
+    CAIRO_GL_FLAVOR_ES2 = 2,
+    CAIRO_GL_FLAVOR_ES3 = 3
+} cairo_gl_flavor_t;
+
+/* Indices for vertex attributes used by BindAttribLocation, etc. */
+enum {
+    CAIRO_GL_VERTEX_ATTRIB_INDEX = 0,
+    CAIRO_GL_COLOR_ATTRIB_INDEX  = 1,
+    CAIRO_GL_TEXCOORD0_ATTRIB_INDEX = 2,
+    CAIRO_GL_TEXCOORD1_ATTRIB_INDEX = CAIRO_GL_TEXCOORD0_ATTRIB_INDEX + 1
+};
+
+typedef enum cairo_gl_operand_type {
+    CAIRO_GL_OPERAND_NONE,
+    CAIRO_GL_OPERAND_CONSTANT,
+    CAIRO_GL_OPERAND_TEXTURE,
+    CAIRO_GL_OPERAND_LINEAR_GRADIENT,
+    CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0,
+    CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE,
+    CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT,
+
+    CAIRO_GL_OPERAND_COUNT
+} cairo_gl_operand_type_t;
+
+/* This union structure describes a potential source or mask operand to the
+ * compositing equation.
+ */
+typedef struct cairo_gl_operand {
+    cairo_gl_operand_type_t type;
+    union {
+	struct {
+	    GLuint tex;
+	    cairo_gl_surface_t *surface;
+	    cairo_gl_surface_t *owns_surface;
+	    cairo_surface_attributes_t attributes;
+	    int texgen;
+	} texture;
+	struct {
+	    GLfloat color[4];
+	} constant;
+	struct {
+	    cairo_gl_gradient_t *gradient;
+	    cairo_matrix_t m;
+	    cairo_circle_double_t circle_d;
+	    double radius_0, a;
+	    cairo_extend_t extend;
+	    int texgen;
+	} gradient;
+    };
+    unsigned int vertex_offset;
+} cairo_gl_operand_t;
+
+typedef struct cairo_gl_source {
+    cairo_surface_t base;
+    cairo_gl_operand_t operand;
+} cairo_gl_source_t;
+
+struct _cairo_gl_surface {
+    cairo_surface_t base;
+    cairo_gl_operand_t operand;
+
+    int width, height;
+
+    GLuint tex; /* GL texture object containing our data. */
+    GLuint fb; /* GL framebuffer object wrapping our data. */
+    GLuint depth_stencil; /* GL renderbuffer object for holding stencil buffer clip. */
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+    GLuint msaa_rb; /* The ARB MSAA path uses a renderbuffer. */
+    GLuint msaa_fb;
+#endif
+    GLuint msaa_depth_stencil;
+
+    cairo_bool_t stencil_and_msaa_caps_initialized;
+    cairo_bool_t supports_stencil; /* Stencil support for for non-texture surfaces. */
+    cairo_bool_t supports_msaa;
+    GLint        num_samples;
+    cairo_bool_t msaa_active; /* Whether the multisampling
+			         framebuffer is active or not. */
+    cairo_bool_t content_in_texture; /* whether we just uploaded image
+					to texture, used for certain
+					gles2 extensions and glesv3 */
+    cairo_clip_t *clip_on_stencil_buffer;
+
+    int owns_tex;
+    cairo_bool_t needs_update;
+
+    cairo_region_t *clip_region;
+};
+
+typedef struct cairo_gl_glyph_cache {
+    cairo_rtree_t rtree;
+    cairo_gl_surface_t *surface;
+} cairo_gl_glyph_cache_t;
+
+typedef enum cairo_gl_tex {
+    CAIRO_GL_TEX_SOURCE = 0,
+    CAIRO_GL_TEX_MASK = 1,
+    CAIRO_GL_TEX_TEMP = 2
+} cairo_gl_tex_t;
+
+typedef struct cairo_gl_shader {
+    GLuint fragment_shader;
+    GLuint program;
+    GLint mvp_location;
+    GLint constant_location[2];
+    GLint a_location[2];
+    GLint circle_d_location[2];
+    GLint radius_0_location[2];
+    GLint texdims_location[2];
+    GLint texgen_location[2];
+} cairo_gl_shader_t;
+
+typedef enum cairo_gl_shader_in {
+    CAIRO_GL_SHADER_IN_NORMAL,
+    CAIRO_GL_SHADER_IN_CA_SOURCE,
+    CAIRO_GL_SHADER_IN_CA_SOURCE_ALPHA,
+
+    CAIRO_GL_SHADER_IN_COUNT
+} cairo_gl_shader_in_t;
+
+typedef enum cairo_gl_var_type {
+  CAIRO_GL_VAR_NONE,
+  CAIRO_GL_VAR_TEXCOORDS,
+  CAIRO_GL_VAR_TEXGEN,
+} cairo_gl_var_type_t;
+
+typedef enum cairo_gl_primitive_type {
+    CAIRO_GL_PRIMITIVE_TYPE_TRIANGLES,
+    CAIRO_GL_PRIMITIVE_TYPE_TRISTRIPS
+} cairo_gl_primitive_type_t;
+
+typedef void (*cairo_gl_emit_rect_t) (cairo_gl_context_t *ctx,
+				      GLfloat x1, GLfloat y1,
+				      GLfloat x2, GLfloat y2);
+
+typedef void (*cairo_gl_emit_span_t) (cairo_gl_context_t *ctx,
+				      GLfloat x1, GLfloat y1,
+				      GLfloat x2, GLfloat y2,
+				      uint8_t alpha);
+
+typedef void (*cairo_gl_emit_glyph_t) (cairo_gl_context_t *ctx,
+				       GLfloat x1, GLfloat y1,
+				       GLfloat x2, GLfloat y2,
+				       GLfloat glyph_x1, GLfloat glyph_y1,
+				       GLfloat glyph_x2, GLfloat glyph_y2);
+
+#define cairo_gl_var_type_hash(src,mask,spans,dest) ((spans) << 5) | ((mask) << 3 | (src << 1) | (dest))
+#define CAIRO_GL_VAR_TYPE_MAX (1 << 6)
+
+typedef void (*cairo_gl_generic_func_t)(void);
+typedef cairo_gl_generic_func_t (*cairo_gl_get_proc_addr_func_t)(const char *procname);
+
+typedef struct _cairo_gl_dispatch {
+    /* Buffers */
+    void (*GenBuffers) (GLsizei n, GLuint *buffers);
+    void (*BindBuffer) (GLenum target, GLuint buffer);
+    void (*BufferData) (GLenum target, GLsizeiptr size,
+			  const GLvoid* data, GLenum usage);
+    GLvoid *(*MapBuffer) (GLenum target, GLenum access);
+    GLboolean (*UnmapBuffer) (GLenum target);
+
+    /* Shaders */
+    GLuint (*CreateShader) (GLenum type);
+    void (*ShaderSource) (GLuint shader, GLsizei count,
+			    const GLchar** string, const GLint* length);
+    void (*CompileShader) (GLuint shader);
+    void (*GetShaderiv) (GLuint shader, GLenum pname, GLint *params);
+    void (*GetShaderInfoLog) (GLuint shader, GLsizei bufSize,
+				GLsizei *length, GLchar *infoLog);
+    void (*DeleteShader) (GLuint shader);
+
+    /* Programs */
+    GLuint (*CreateProgram) (void);
+    void (*AttachShader) (GLuint program, GLuint shader);
+    void (*DeleteProgram) (GLuint program);
+    void (*LinkProgram) (GLuint program);
+    void (*UseProgram) (GLuint program);
+    void (*GetProgramiv) (GLuint program, GLenum pname, GLint *params);
+    void (*GetProgramInfoLog) (GLuint program, GLsizei bufSize,
+				 GLsizei *length, GLchar *infoLog);
+
+    /* Uniforms */
+    GLint (*GetUniformLocation) (GLuint program, const GLchar* name);
+    void (*Uniform1f) (GLint location, GLfloat x);
+    void (*Uniform2f) (GLint location, GLfloat x, GLfloat y);
+    void (*Uniform3f) (GLint location, GLfloat x, GLfloat y, GLfloat z);
+    void (*Uniform4f) (GLint location, GLfloat x, GLfloat y, GLfloat z,
+			 GLfloat w);
+    void (*UniformMatrix3fv) (GLint location, GLsizei count,
+				GLboolean transpose, const GLfloat *value);
+    void (*UniformMatrix4fv) (GLint location, GLsizei count,
+			      GLboolean transpose, const GLfloat *value);
+    void (*Uniform1i) (GLint location, GLint x);
+
+    /* Attributes */
+    void (*BindAttribLocation) (GLuint program, GLuint index,
+				const GLchar *name);
+    void (*VertexAttribPointer) (GLuint index, GLint size, GLenum type,
+				 GLboolean normalized, GLsizei stride,
+				 const GLvoid *pointer);
+    void (*EnableVertexAttribArray) (GLuint index);
+    void (*DisableVertexAttribArray) (GLuint index);
+
+    /* Framebuffer objects */
+    void (*GenFramebuffers) (GLsizei n, GLuint* framebuffers);
+    void (*BindFramebuffer) (GLenum target, GLuint framebuffer);
+    void (*FramebufferTexture2D) (GLenum target, GLenum attachment,
+				    GLenum textarget, GLuint texture,
+				    GLint level);
+    GLenum (*CheckFramebufferStatus) (GLenum target);
+    void (*DeleteFramebuffers) (GLsizei n, const GLuint* framebuffers);
+    void (*GenRenderbuffers) (GLsizei n, GLuint *renderbuffers);
+    void (*BindRenderbuffer) (GLenum target, GLuint renderbuffer);
+    void (*RenderbufferStorage) (GLenum target, GLenum internal_format,
+				 GLsizei width, GLsizei height);
+    void (*FramebufferRenderbuffer) (GLenum target, GLenum attachment,
+				     GLenum renderbuffer_ttarget, GLuint renderbuffer);
+    void (*DeleteRenderbuffers) (GLsizei n, GLuint *renderbuffers);
+    void (*BlitFramebuffer) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+			     GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+			     GLbitfield mask, GLenum filter);
+    void (*RenderbufferStorageMultisample) (GLenum target, GLsizei samples,
+					    GLenum internalformat,
+					    GLsizei width, GLsizei height);
+    void (*FramebufferTexture2DMultisample) (GLenum target, GLenum attachment,
+					     GLenum textarget, GLuint texture,
+					     GLint level, GLsizei samples);
+} cairo_gl_dispatch_t;
+
+struct _cairo_gl_context {
+    cairo_device_t base;
+
+    const cairo_compositor_t *compositor;
+
+    GLuint texture_load_pbo;
+    GLint max_framebuffer_size;
+    GLint max_texture_size;
+    GLint max_textures;
+    GLenum tex_target;
+
+    GLint num_samples;
+    cairo_bool_t supports_msaa;
+    char *vb;
+
+    cairo_bool_t has_shader_support;
+
+    GLuint vertex_shaders[CAIRO_GL_VAR_TYPE_MAX];
+    cairo_gl_shader_t fill_rectangles_shader;
+    cairo_cache_t shaders;
+
+    cairo_cache_t gradients;
+
+    cairo_gl_glyph_cache_t glyph_cache[2];
+    cairo_list_t fonts;
+
+    cairo_gl_surface_t *current_target;
+    cairo_operator_t current_operator;
+    cairo_gl_shader_t *pre_shader; /* for component alpha */
+    cairo_gl_shader_t *current_shader;
+
+    cairo_gl_operand_t operands[2];
+    cairo_bool_t spans;
+
+    unsigned int vbo_size;
+    unsigned int vb_offset;
+    unsigned int vertex_size;
+    cairo_region_t *clip_region;
+    cairo_clip_t *clip;
+
+    cairo_gl_primitive_type_t primitive_type;
+    cairo_array_t tristrip_indices;
+
+    cairo_bool_t has_mesa_pack_invert;
+    cairo_gl_dispatch_t dispatch;
+    GLfloat modelviewprojection_matrix[16];
+    cairo_gl_flavor_t gl_flavor;
+    cairo_bool_t has_map_buffer;
+    cairo_bool_t has_packed_depth_stencil;
+    cairo_bool_t has_npot_repeat;
+    cairo_bool_t can_read_bgra;
+
+    cairo_bool_t thread_aware;
+
+    void (*acquire) (void *ctx);
+    void (*release) (void *ctx);
+
+    void (*make_current) (void *ctx, cairo_gl_surface_t *surface);
+    void (*swap_buffers)(void *ctx, cairo_gl_surface_t *surface);
+    void (*destroy) (void *ctx);
+};
+
+typedef struct _cairo_gl_composite {
+    cairo_gl_surface_t *dst;
+    cairo_operator_t op;
+    cairo_region_t *clip_region;
+
+    cairo_gl_operand_t src;
+    cairo_gl_operand_t mask;
+    cairo_bool_t spans;
+
+    cairo_clip_t *clip;
+    cairo_bool_t multisample;
+} cairo_gl_composite_t;
+
+typedef struct _cairo_gl_font {
+    cairo_scaled_font_private_t		base;
+    cairo_device_t			*device;
+    cairo_list_t			link;
+} cairo_gl_font_t;
+
+static cairo_always_inline GLenum
+_cairo_gl_get_error (void)
+{
+    GLenum err = glGetError();
+
+    if (unlikely (err))
+        while (glGetError ());
+
+    return err;
+}
+
+static inline cairo_device_t *
+_cairo_gl_context_create_in_error (cairo_status_t status)
+{
+    return (cairo_device_t *) _cairo_device_create_in_error (status);
+}
+
+cairo_private cairo_status_t
+_cairo_gl_context_init (cairo_gl_context_t *ctx);
+
+cairo_private void
+_cairo_gl_surface_init (cairo_device_t *device,
+			cairo_gl_surface_t *surface,
+			cairo_content_t content,
+			int width, int height);
+
+static cairo_always_inline cairo_bool_t cairo_warn
+_cairo_gl_surface_is_texture (cairo_gl_surface_t *surface)
+{
+    return surface->tex != 0;
+}
+
+cairo_private cairo_status_t
+_cairo_gl_surface_draw_image (cairo_gl_surface_t *dst,
+			      cairo_image_surface_t *src,
+			      int src_x, int src_y,
+			      int width, int height,
+			      int dst_x, int dst_y,
+			      cairo_bool_t force_flush);
+
+cairo_private cairo_int_status_t
+_cairo_gl_surface_resolve_multisampling (cairo_gl_surface_t *surface);
+
+static cairo_always_inline cairo_bool_t
+_cairo_gl_device_has_glsl (cairo_device_t *device)
+{
+    return ((cairo_gl_context_t *) device)->has_shader_support;
+}
+
+static cairo_always_inline cairo_bool_t
+_cairo_gl_device_requires_power_of_two_textures (cairo_device_t *device)
+{
+    return ((cairo_gl_context_t *) device)->tex_target == GL_TEXTURE_RECTANGLE;
+}
+
+static cairo_always_inline cairo_status_t cairo_warn
+_cairo_gl_context_acquire (cairo_device_t *device,
+			   cairo_gl_context_t **ctx)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (device);
+    if (unlikely (status))
+	return status;
+
+    /* clear potential previous GL errors */
+    _cairo_gl_get_error ();
+
+    *ctx = (cairo_gl_context_t *) device;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_always_inline cairo_warn cairo_status_t
+_cairo_gl_context_release (cairo_gl_context_t *ctx, cairo_status_t status)
+{
+    GLenum err;
+
+    err = _cairo_gl_get_error ();
+
+    if (unlikely (err)) {
+        cairo_status_t new_status;
+	new_status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+        if (status == CAIRO_STATUS_SUCCESS)
+            status = new_status;
+    }
+
+    cairo_device_release (&(ctx)->base);
+
+    return status;
+}
+
+cairo_private void
+_cairo_gl_context_set_destination (cairo_gl_context_t *ctx,
+				   cairo_gl_surface_t *surface,
+				   cairo_bool_t multisampling);
+
+cairo_private void
+_cairo_gl_context_bind_framebuffer (cairo_gl_context_t *ctx,
+				    cairo_gl_surface_t *surface,
+				    cairo_bool_t multisampling);
+
+cairo_private cairo_gl_emit_rect_t
+_cairo_gl_context_choose_emit_rect (cairo_gl_context_t *ctx);
+
+cairo_private void
+_cairo_gl_context_emit_rect (cairo_gl_context_t *ctx,
+			     GLfloat x1, GLfloat y1,
+			     GLfloat x2, GLfloat y2);
+
+cairo_private cairo_gl_emit_span_t
+_cairo_gl_context_choose_emit_span (cairo_gl_context_t *ctx);
+
+cairo_private cairo_gl_emit_glyph_t
+_cairo_gl_context_choose_emit_glyph (cairo_gl_context_t *ctx);
+
+cairo_private void
+_cairo_gl_context_activate (cairo_gl_context_t *ctx,
+                            cairo_gl_tex_t      tex_unit);
+
+cairo_private cairo_bool_t
+_cairo_gl_operator_is_supported (cairo_operator_t op);
+
+cairo_private cairo_bool_t
+_cairo_gl_ensure_stencil (cairo_gl_context_t *ctx,
+			  cairo_gl_surface_t *surface);
+
+cairo_private cairo_status_t
+_cairo_gl_composite_init (cairo_gl_composite_t *setup,
+                          cairo_operator_t op,
+                          cairo_gl_surface_t *dst,
+                          cairo_bool_t has_component_alpha);
+
+cairo_private void
+_cairo_gl_composite_fini (cairo_gl_composite_t *setup);
+
+cairo_private cairo_status_t
+_cairo_gl_composite_set_operator (cairo_gl_composite_t *setup,
+				  cairo_operator_t op,
+				  cairo_bool_t assume_component_alpha);
+
+cairo_private void
+_cairo_gl_composite_set_clip_region (cairo_gl_composite_t *setup,
+                                     cairo_region_t *clip_region);
+
+cairo_private void
+_cairo_gl_composite_set_clip(cairo_gl_composite_t *setup,
+			     cairo_clip_t *clip);
+
+cairo_private cairo_int_status_t
+_cairo_gl_composite_set_source (cairo_gl_composite_t *setup,
+				const cairo_pattern_t *pattern,
+				const cairo_rectangle_int_t *sample,
+				const cairo_rectangle_int_t *extents,
+				cairo_bool_t use_texgen);
+
+cairo_private void
+_cairo_gl_composite_set_solid_source (cairo_gl_composite_t *setup,
+				      const cairo_color_t *color);
+
+cairo_private void
+_cairo_gl_composite_set_source_operand (cairo_gl_composite_t *setup,
+					const cairo_gl_operand_t *source);
+
+cairo_private cairo_int_status_t
+_cairo_gl_composite_set_mask (cairo_gl_composite_t *setup,
+			      const cairo_pattern_t *pattern,
+			      const cairo_rectangle_int_t *sample,
+			      const cairo_rectangle_int_t *extents,
+			      cairo_bool_t use_texgen);
+
+cairo_private void
+_cairo_gl_composite_set_mask_operand (cairo_gl_composite_t *setup,
+				      const cairo_gl_operand_t *mask);
+
+cairo_private void
+_cairo_gl_composite_set_spans (cairo_gl_composite_t *setup);
+
+cairo_private void
+_cairo_gl_composite_set_multisample (cairo_gl_composite_t *setup);
+
+cairo_private cairo_status_t
+_cairo_gl_composite_begin (cairo_gl_composite_t *setup,
+                           cairo_gl_context_t **ctx);
+
+cairo_private cairo_status_t
+_cairo_gl_set_operands_and_operator (cairo_gl_composite_t *setup,
+				     cairo_gl_context_t *ctx);
+
+cairo_private void
+_cairo_gl_composite_flush (cairo_gl_context_t *ctx);
+
+cairo_private cairo_int_status_t
+_cairo_gl_composite_emit_quad_as_tristrip (cairo_gl_context_t	*ctx,
+					   cairo_gl_composite_t	*setup,
+					   const cairo_point_t	 quad[4]);
+
+cairo_private cairo_int_status_t
+_cairo_gl_composite_emit_triangle_as_tristrip (cairo_gl_context_t	*ctx,
+					       cairo_gl_composite_t	*setup,
+					       const cairo_point_t	 triangle[3]);
+
+cairo_private void
+_cairo_gl_context_destroy_operand (cairo_gl_context_t *ctx,
+                                   cairo_gl_tex_t tex_unit);
+
+cairo_private cairo_bool_t
+_cairo_gl_get_image_format_and_type (cairo_gl_flavor_t flavor,
+				     pixman_format_code_t pixman_format,
+				     GLenum *internal_format, GLenum *format,
+				     GLenum *type, cairo_bool_t *has_alpha,
+				     cairo_bool_t *needs_swap);
+
+cairo_private void
+_cairo_gl_glyph_cache_init (cairo_gl_glyph_cache_t *cache);
+
+cairo_private void
+_cairo_gl_glyph_cache_fini (cairo_gl_context_t *ctx,
+			    cairo_gl_glyph_cache_t *cache);
+
+cairo_private cairo_int_status_t
+_cairo_gl_surface_show_glyphs (void			*abstract_dst,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       cairo_glyph_t		*glyphs,
+			       int			 num_glyphs,
+			       cairo_scaled_font_t	*scaled_font,
+			       const cairo_clip_t	*clip,
+			       int			*remaining_glyphs);
+
+cairo_private cairo_status_t
+_cairo_gl_context_init_shaders (cairo_gl_context_t *ctx);
+
+cairo_private void
+_cairo_gl_context_fini_shaders (cairo_gl_context_t *ctx);
+
+static cairo_always_inline cairo_bool_t
+_cairo_gl_context_is_flushed (cairo_gl_context_t *ctx)
+{
+    return ctx->vb_offset == 0;
+}
+
+cairo_private cairo_status_t
+_cairo_gl_get_shader_by_type (cairo_gl_context_t *ctx,
+                              cairo_gl_operand_t *source,
+                              cairo_gl_operand_t *mask,
+			      cairo_bool_t use_coverage,
+                              cairo_gl_shader_in_t in,
+                              cairo_gl_shader_t **shader);
+
+cairo_private void
+_cairo_gl_shader_bind_float (cairo_gl_context_t *ctx,
+			     GLint location,
+			     float value);
+
+cairo_private void
+_cairo_gl_shader_bind_vec2 (cairo_gl_context_t *ctx,
+			    GLint location,
+			    float value0, float value1);
+
+cairo_private void
+_cairo_gl_shader_bind_vec3 (cairo_gl_context_t *ctx,
+			    GLint location,
+			    float value0,
+			    float value1,
+			    float value2);
+
+cairo_private void
+_cairo_gl_shader_bind_vec4 (cairo_gl_context_t *ctx,
+			    GLint location,
+			    float value0, float value1,
+			    float value2, float value3);
+
+cairo_private void
+_cairo_gl_shader_bind_matrix (cairo_gl_context_t *ctx,
+			      GLint location,
+			      const cairo_matrix_t* m);
+
+cairo_private void
+_cairo_gl_shader_bind_matrix4f (cairo_gl_context_t *ctx,
+				GLint location,
+				GLfloat* gl_m);
+
+cairo_private void
+_cairo_gl_set_shader (cairo_gl_context_t *ctx,
+		      cairo_gl_shader_t *shader);
+
+cairo_private void
+_cairo_gl_shader_fini (cairo_gl_context_t *ctx, cairo_gl_shader_t *shader);
+
+cairo_private int
+_cairo_gl_get_version (void);
+
+cairo_private cairo_gl_flavor_t
+_cairo_gl_get_flavor (void);
+
+cairo_private unsigned long
+_cairo_gl_get_vbo_size (void);
+
+cairo_private cairo_bool_t
+_cairo_gl_has_extension (const char *ext);
+
+cairo_private cairo_status_t
+_cairo_gl_dispatch_init(cairo_gl_dispatch_t *dispatch,
+			cairo_gl_get_proc_addr_func_t get_proc_addr);
+
+cairo_private cairo_int_status_t
+_cairo_gl_operand_init (cairo_gl_operand_t *operand,
+		        const cairo_pattern_t *pattern,
+		        cairo_gl_surface_t *dst,
+			const cairo_rectangle_int_t *sample,
+			const cairo_rectangle_int_t *extents,
+			cairo_bool_t use_texgen);
+
+cairo_private void
+_cairo_gl_solid_operand_init (cairo_gl_operand_t *operand,
+	                      const cairo_color_t *color);
+
+cairo_private cairo_filter_t
+_cairo_gl_operand_get_filter (cairo_gl_operand_t *operand);
+
+cairo_private GLint
+_cairo_gl_operand_get_gl_filter (cairo_gl_operand_t *operand);
+
+cairo_private cairo_extend_t
+_cairo_gl_operand_get_extend (cairo_gl_operand_t *operand);
+
+cairo_private unsigned int
+_cairo_gl_operand_get_vertex_size (const cairo_gl_operand_t *operand);
+
+cairo_private cairo_bool_t
+_cairo_gl_operand_needs_setup (cairo_gl_operand_t *dest,
+                               cairo_gl_operand_t *source,
+                               unsigned int        vertex_offset);
+
+cairo_private void
+_cairo_gl_operand_bind_to_shader (cairo_gl_context_t *ctx,
+                                  cairo_gl_operand_t *operand,
+                                  cairo_gl_tex_t      tex_unit);
+
+cairo_private void
+_cairo_gl_operand_emit (cairo_gl_operand_t *operand,
+                        GLfloat ** vb,
+                        GLfloat x,
+                        GLfloat y);
+
+cairo_private void
+_cairo_gl_operand_copy (cairo_gl_operand_t *dst,
+			const cairo_gl_operand_t *src);
+
+cairo_private void
+_cairo_gl_operand_translate (cairo_gl_operand_t *operand,
+			     double tx, double ty);
+
+cairo_private void
+_cairo_gl_operand_destroy (cairo_gl_operand_t *operand);
+
+cairo_private const cairo_compositor_t *
+_cairo_gl_msaa_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_gl_span_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_gl_traps_compositor_get (void);
+
+cairo_private cairo_int_status_t
+_cairo_gl_check_composite_glyphs (const cairo_composite_rectangles_t *extents,
+				  cairo_scaled_font_t *scaled_font,
+				  cairo_glyph_t *glyphs,
+				  int *num_glyphs);
+
+cairo_private cairo_int_status_t
+_cairo_gl_composite_glyphs (void			*_dst,
+			    cairo_operator_t		 op,
+			    cairo_surface_t		*_src,
+			    int				 src_x,
+			    int				 src_y,
+			    int				 dst_x,
+			    int				 dst_y,
+			    cairo_composite_glyphs_info_t *info);
+
+cairo_private cairo_int_status_t
+_cairo_gl_composite_glyphs_with_clip (void			    *_dst,
+				      cairo_operator_t		     op,
+				      cairo_surface_t		    *_src,
+				      int			     src_x,
+				      int			     src_y,
+				      int			     dst_x,
+				      int			     dst_y,
+				      cairo_composite_glyphs_info_t *info,
+				      cairo_clip_t		    *clip);
+
+cairo_private void
+_cairo_gl_ensure_framebuffer (cairo_gl_context_t *ctx,
+                              cairo_gl_surface_t *surface);
+
+cairo_private cairo_surface_t *
+_cairo_gl_surface_create_scratch (cairo_gl_context_t   *ctx,
+				  cairo_content_t	content,
+				  int			width,
+				  int			height);
+
+cairo_private cairo_surface_t *
+_cairo_gl_surface_create_scratch_for_caching (cairo_gl_context_t *ctx,
+					      cairo_content_t content,
+					      int width,
+					      int height);
+
+cairo_private cairo_surface_t *
+_cairo_gl_pattern_to_source (cairo_surface_t *dst,
+			     const cairo_pattern_t *pattern,
+			     cairo_bool_t is_mask,
+			     const cairo_rectangle_int_t *extents,
+			     const cairo_rectangle_int_t *sample,
+			     int *src_x, int *src_y);
+
+cairo_private cairo_int_status_t
+_cairo_gl_msaa_compositor_draw_clip (cairo_gl_context_t *ctx,
+				     cairo_gl_composite_t *setup,
+				     cairo_clip_t *clip);
+
+cairo_private cairo_surface_t *
+_cairo_gl_white_source (void);
+
+cairo_private void
+_cairo_gl_scissor_to_rectangle (cairo_gl_surface_t *surface,
+				const cairo_rectangle_int_t *r);
+
+static inline cairo_gl_operand_t *
+source_to_operand (cairo_surface_t *surface)
+{
+    cairo_gl_source_t *source = (cairo_gl_source_t *)surface;
+    return source ? &source->operand : NULL;
+}
+
+static inline void
+_cairo_gl_glyph_cache_unlock (cairo_gl_glyph_cache_t *cache)
+{
+    _cairo_rtree_unpin (&cache->rtree);
+}
+
+
+slim_hidden_proto (cairo_gl_surface_create);
+slim_hidden_proto (cairo_gl_surface_create_for_texture);
+
+#endif /* CAIRO_GL_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-gl-shaders.c b/libs/cairo-1.16.0/src/cairo-gl-shaders.c
new file mode 100644
index 0000000..c43cf3b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-shaders.c
@@ -0,0 +1,1098 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 T. Zachary Laine
+ * Copyright © 2010 Eric Anholt
+ * Copyright © 2010 Red Hat, Inc
+ * Copyright © 2010 Linaro Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is T. Zachary Laine.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Eric Anholt <eric@anholt.net>
+ *	T. Zachary Laine <whatwasthataddress@gmail.com>
+ *	Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-gl-private.h"
+#include "cairo-error-private.h"
+#include "cairo-output-stream-private.h"
+
+static cairo_status_t
+_cairo_gl_shader_compile_and_link (cairo_gl_context_t *ctx,
+				   cairo_gl_shader_t *shader,
+				   cairo_gl_var_type_t src,
+				   cairo_gl_var_type_t mask,
+				   cairo_bool_t use_coverage,
+				   const char *fragment_text);
+
+typedef struct _cairo_shader_cache_entry {
+    cairo_cache_entry_t base;
+
+    unsigned vertex;
+
+    cairo_gl_operand_type_t src;
+    cairo_gl_operand_type_t mask;
+    cairo_gl_operand_type_t dest;
+    cairo_bool_t use_coverage;
+
+    cairo_gl_shader_in_t in;
+    GLint src_gl_filter;
+    cairo_bool_t src_border_fade;
+    cairo_extend_t src_extend;
+    GLint mask_gl_filter;
+    cairo_bool_t mask_border_fade;
+    cairo_extend_t mask_extend;
+
+    cairo_gl_context_t *ctx; /* XXX: needed to destroy the program */
+    cairo_gl_shader_t shader;
+} cairo_shader_cache_entry_t;
+
+static cairo_bool_t
+_cairo_gl_shader_cache_equal_desktop (const void *key_a, const void *key_b)
+{
+    const cairo_shader_cache_entry_t *a = key_a;
+    const cairo_shader_cache_entry_t *b = key_b;
+    cairo_bool_t both_have_npot_repeat =
+	a->ctx->has_npot_repeat && b->ctx->has_npot_repeat;
+
+    return (a->vertex == b->vertex &&
+	    a->src  == b->src  &&
+	    a->mask == b->mask &&
+	    a->dest == b->dest &&
+	    a->use_coverage == b->use_coverage &&
+	    a->in   == b->in &&
+	    (both_have_npot_repeat || a->src_extend == b->src_extend) &&
+	    (both_have_npot_repeat || a->mask_extend == b->mask_extend));
+}
+
+/*
+ * For GLES2 we use more complicated shaders to implement missing GL
+ * features. In this case we need more parameters to uniquely identify
+ * a shader (vs _cairo_gl_shader_cache_equal_desktop()).
+ */
+static cairo_bool_t
+_cairo_gl_shader_cache_equal_gles2 (const void *key_a, const void *key_b)
+{
+    const cairo_shader_cache_entry_t *a = key_a;
+    const cairo_shader_cache_entry_t *b = key_b;
+    cairo_bool_t both_have_npot_repeat =
+	a->ctx->has_npot_repeat && b->ctx->has_npot_repeat;
+
+    return (a->vertex == b->vertex &&
+	    a->src  == b->src  &&
+	    a->mask == b->mask &&
+	    a->dest == b->dest &&
+	    a->use_coverage == b->use_coverage &&
+	    a->in   == b->in   &&
+	    a->src_gl_filter == b->src_gl_filter &&
+	    a->src_border_fade == b->src_border_fade &&
+	    (both_have_npot_repeat || a->src_extend == b->src_extend) &&
+	    a->mask_gl_filter == b->mask_gl_filter &&
+	    a->mask_border_fade == b->mask_border_fade &&
+	    (both_have_npot_repeat || a->mask_extend == b->mask_extend));
+}
+
+static unsigned long
+_cairo_gl_shader_cache_hash (const cairo_shader_cache_entry_t *entry)
+{
+    return ((entry->src << 24) | (entry->mask << 16) | (entry->dest << 8) | (entry->in << 1) | entry->use_coverage) ^ entry->vertex;
+}
+
+static void
+_cairo_gl_shader_cache_destroy (void *data)
+{
+    cairo_shader_cache_entry_t *entry = data;
+
+    _cairo_gl_shader_fini (entry->ctx, &entry->shader);
+    if (entry->ctx->current_shader == &entry->shader)
+	entry->ctx->current_shader = NULL;
+    free (entry);
+}
+
+static void
+_cairo_gl_shader_init (cairo_gl_shader_t *shader)
+{
+    shader->fragment_shader = 0;
+    shader->program = 0;
+}
+
+cairo_status_t
+_cairo_gl_context_init_shaders (cairo_gl_context_t *ctx)
+{
+    static const char *fill_fs_source =
+	"#ifdef GL_ES\n"
+	"precision mediump float;\n"
+	"#endif\n"
+	"uniform vec4 color;\n"
+	"void main()\n"
+	"{\n"
+	"	gl_FragColor = color;\n"
+	"}\n";
+    cairo_status_t status;
+
+    if (_cairo_gl_get_version () >= CAIRO_GL_VERSION_ENCODE (2, 0) ||
+	(_cairo_gl_has_extension ("GL_ARB_shader_objects") &&
+	 _cairo_gl_has_extension ("GL_ARB_fragment_shader") &&
+	 _cairo_gl_has_extension ("GL_ARB_vertex_shader"))) {
+	ctx->has_shader_support = TRUE;
+    } else {
+	ctx->has_shader_support = FALSE;
+	fprintf (stderr, "Error: The cairo gl backend requires shader support!\n");
+	return CAIRO_STATUS_DEVICE_ERROR;
+    }
+
+    memset (ctx->vertex_shaders, 0, sizeof (ctx->vertex_shaders));
+
+    status = _cairo_cache_init (&ctx->shaders,
+				ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ?
+				    _cairo_gl_shader_cache_equal_desktop :
+				    _cairo_gl_shader_cache_equal_gles2,
+				NULL,
+				_cairo_gl_shader_cache_destroy,
+				CAIRO_GL_MAX_SHADERS_PER_CONTEXT);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gl_shader_init (&ctx->fill_rectangles_shader);
+    status = _cairo_gl_shader_compile_and_link (ctx,
+						&ctx->fill_rectangles_shader,
+						CAIRO_GL_VAR_NONE,
+						CAIRO_GL_VAR_NONE,
+						FALSE,
+						fill_fs_source);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gl_context_fini_shaders (cairo_gl_context_t *ctx)
+{
+    int i;
+
+    for (i = 0; i < CAIRO_GL_VAR_TYPE_MAX; i++) {
+	if (ctx->vertex_shaders[i])
+	    ctx->dispatch.DeleteShader (ctx->vertex_shaders[i]);
+    }
+
+    _cairo_cache_fini (&ctx->shaders);
+}
+
+void
+_cairo_gl_shader_fini (cairo_gl_context_t *ctx,
+		       cairo_gl_shader_t *shader)
+{
+    if (shader->fragment_shader)
+	ctx->dispatch.DeleteShader (shader->fragment_shader);
+
+    if (shader->program)
+	ctx->dispatch.DeleteProgram (shader->program);
+}
+
+static const char *operand_names[] = { "source", "mask", "dest" };
+
+static cairo_gl_var_type_t
+cairo_gl_operand_get_var_type (cairo_gl_operand_t *operand)
+{
+    switch (operand->type) {
+    default:
+    case CAIRO_GL_OPERAND_COUNT:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_OPERAND_NONE:
+    case CAIRO_GL_OPERAND_CONSTANT:
+	return CAIRO_GL_VAR_NONE;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	return operand->gradient.texgen ? CAIRO_GL_VAR_TEXGEN : CAIRO_GL_VAR_TEXCOORDS;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	return operand->texture.texgen ? CAIRO_GL_VAR_TEXGEN : CAIRO_GL_VAR_TEXCOORDS;
+    }
+}
+
+static void
+cairo_gl_shader_emit_variable (cairo_output_stream_t *stream,
+			       cairo_gl_var_type_t type,
+			       cairo_gl_tex_t name)
+{
+    switch (type) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_VAR_NONE:
+	break;
+    case CAIRO_GL_VAR_TEXCOORDS:
+	_cairo_output_stream_printf (stream,
+				     "attribute vec4 MultiTexCoord%d;\n"
+				     "varying vec2 %s_texcoords;\n",
+				     name,
+				     operand_names[name]);
+	break;
+    case CAIRO_GL_VAR_TEXGEN:
+	_cairo_output_stream_printf (stream,
+				     "uniform mat3 %s_texgen;\n"
+				     "varying vec2 %s_texcoords;\n",
+				     operand_names[name],
+				     operand_names[name]);
+	break;
+    }
+}
+
+static void
+cairo_gl_shader_emit_vertex (cairo_output_stream_t *stream,
+			     cairo_gl_var_type_t type,
+			     cairo_gl_tex_t name)
+{
+    switch (type) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_VAR_NONE:
+	break;
+    case CAIRO_GL_VAR_TEXCOORDS:
+	_cairo_output_stream_printf (stream,
+				     "    %s_texcoords = MultiTexCoord%d.xy;\n",
+				     operand_names[name], name);
+	break;
+
+    case CAIRO_GL_VAR_TEXGEN:
+	_cairo_output_stream_printf (stream,
+				     "    %s_texcoords = (%s_texgen * Vertex.xyw).xy;\n",
+				     operand_names[name], operand_names[name]);
+	break;
+    }
+}
+
+static void
+cairo_gl_shader_dcl_coverage (cairo_output_stream_t *stream)
+{
+    _cairo_output_stream_printf (stream, "varying float coverage;\n");
+}
+
+static void
+cairo_gl_shader_def_coverage (cairo_output_stream_t *stream)
+{
+    _cairo_output_stream_printf (stream, "    coverage = Color.a;\n");
+}
+
+static cairo_status_t
+cairo_gl_shader_get_vertex_source (cairo_gl_var_type_t src,
+				   cairo_gl_var_type_t mask,
+				   cairo_bool_t use_coverage,
+				   cairo_gl_var_type_t dest,
+				   char **out)
+{
+    cairo_output_stream_t *stream = _cairo_memory_stream_create ();
+    unsigned char *source;
+    unsigned long length;
+    cairo_status_t status;
+
+    cairo_gl_shader_emit_variable (stream, src, CAIRO_GL_TEX_SOURCE);
+    cairo_gl_shader_emit_variable (stream, mask, CAIRO_GL_TEX_MASK);
+    if (use_coverage)
+	cairo_gl_shader_dcl_coverage (stream);
+
+    _cairo_output_stream_printf (stream,
+				 "attribute vec4 Vertex;\n"
+				 "attribute vec4 Color;\n"
+				 "uniform mat4 ModelViewProjectionMatrix;\n"
+				 "void main()\n"
+				 "{\n"
+				 "    gl_Position = ModelViewProjectionMatrix * Vertex;\n");
+
+    cairo_gl_shader_emit_vertex (stream, src, CAIRO_GL_TEX_SOURCE);
+    cairo_gl_shader_emit_vertex (stream, mask, CAIRO_GL_TEX_MASK);
+    if (use_coverage)
+	cairo_gl_shader_def_coverage (stream);
+
+    _cairo_output_stream_write (stream,
+				"}\n\0", 3);
+
+    status = _cairo_memory_stream_destroy (stream, &source, &length);
+    if (unlikely (status))
+	return status;
+
+    *out = (char *) source;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Returns whether an operand needs a special border fade fragment shader
+ * to simulate the GL_CLAMP_TO_BORDER wrapping method that is missing in GLES2.
+ */
+static cairo_bool_t
+_cairo_gl_shader_needs_border_fade (cairo_gl_operand_t *operand)
+{
+    cairo_extend_t extend =_cairo_gl_operand_get_extend (operand);
+
+    return extend == CAIRO_EXTEND_NONE &&
+	   (operand->type == CAIRO_GL_OPERAND_TEXTURE ||
+	    operand->type == CAIRO_GL_OPERAND_LINEAR_GRADIENT ||
+	    operand->type == CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE ||
+	    operand->type == CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0);
+}
+
+static void
+cairo_gl_shader_emit_color (cairo_output_stream_t *stream,
+			    cairo_gl_context_t *ctx,
+			    cairo_gl_operand_t *op,
+			    cairo_gl_tex_t name)
+{
+    const char *namestr = operand_names[name];
+    const char *rectstr = (ctx->tex_target == GL_TEXTURE_RECTANGLE ? "Rect" : "");
+
+    switch (op->type) {
+    case CAIRO_GL_OPERAND_COUNT:
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    case CAIRO_GL_OPERAND_NONE:
+	_cairo_output_stream_printf (stream,
+	    "vec4 get_%s()\n"
+	    "{\n"
+	    "    return vec4 (0, 0, 0, 1);\n"
+	    "}\n",
+	    namestr);
+	break;
+    case CAIRO_GL_OPERAND_CONSTANT:
+	_cairo_output_stream_printf (stream,
+	    "uniform vec4 %s_constant;\n"
+	    "vec4 get_%s()\n"
+	    "{\n"
+	    "    return %s_constant;\n"
+	    "}\n",
+	    namestr, namestr, namestr);
+	break;
+    case CAIRO_GL_OPERAND_TEXTURE:
+	_cairo_output_stream_printf (stream,
+	     "uniform sampler2D%s %s_sampler;\n"
+	     "uniform vec2 %s_texdims;\n"
+	     "varying vec2 %s_texcoords;\n"
+	     "vec4 get_%s()\n"
+	     "{\n",
+	     rectstr, namestr, namestr, namestr, namestr);
+	if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	     ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) &&
+	    _cairo_gl_shader_needs_border_fade (op))
+	{
+	    _cairo_output_stream_printf (stream,
+		"    vec2 border_fade = %s_border_fade (%s_texcoords, %s_texdims);\n"
+		"    vec4 texel = texture2D%s (%s_sampler, %s_texcoords);\n"
+		"    return texel * border_fade.x * border_fade.y;\n"
+		"}\n",
+		namestr, namestr, namestr, rectstr, namestr, namestr);
+	}
+	else
+	{
+	    _cairo_output_stream_printf (stream,
+		"    return texture2D%s (%s_sampler, %s_wrap (%s_texcoords));\n"
+		"}\n",
+		rectstr, namestr, namestr, namestr);
+	}
+	break;
+    case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
+	_cairo_output_stream_printf (stream,
+	    "varying vec2 %s_texcoords;\n"
+	    "uniform vec2 %s_texdims;\n"
+	    "uniform sampler2D%s %s_sampler;\n"
+	    "\n"
+	    "vec4 get_%s()\n"
+	    "{\n",
+	    namestr, namestr, rectstr, namestr, namestr);
+	if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	     ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) &&
+	    _cairo_gl_shader_needs_border_fade (op))
+	{
+	    _cairo_output_stream_printf (stream,
+		"    float border_fade = %s_border_fade (%s_texcoords.x, %s_texdims.x);\n"
+		"    vec4 texel = texture2D%s (%s_sampler, vec2 (%s_texcoords.x, 0.5));\n"
+		"    return texel * border_fade;\n"
+		"}\n",
+		namestr, namestr, namestr, rectstr, namestr, namestr);
+	}
+	else
+	{
+	    _cairo_output_stream_printf (stream,
+		"    return texture2D%s (%s_sampler, %s_wrap (vec2 (%s_texcoords.x, 0.5)));\n"
+		"}\n",
+		rectstr, namestr, namestr, namestr);
+	}
+	break;
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
+	_cairo_output_stream_printf (stream,
+	    "varying vec2 %s_texcoords;\n"
+	    "uniform vec2 %s_texdims;\n"
+	    "uniform sampler2D%s %s_sampler;\n"
+	    "uniform vec3 %s_circle_d;\n"
+	    "uniform float %s_radius_0;\n"
+	    "\n"
+	    "vec4 get_%s()\n"
+	    "{\n"
+	    "    vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n"
+	    "    \n"
+	    "    float B = dot (pos, %s_circle_d);\n"
+	    "    float C = dot (pos, vec3 (pos.xy, -pos.z));\n"
+	    "    \n"
+	    "    float t = 0.5 * C / B;\n"
+	    "    float is_valid = step (-%s_radius_0, t * %s_circle_d.z);\n",
+	    namestr, namestr, rectstr, namestr, namestr, namestr, namestr,
+	    namestr, namestr, namestr, namestr, namestr);
+	if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	     ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) &&
+	    _cairo_gl_shader_needs_border_fade (op))
+	{
+	    _cairo_output_stream_printf (stream,
+		"    float border_fade = %s_border_fade (t, %s_texdims.x);\n"
+		"    vec4 texel = texture2D%s (%s_sampler, vec2 (t, 0.5));\n"
+		"    return mix (vec4 (0.0), texel * border_fade, is_valid);\n"
+		"}\n",
+		namestr, namestr, rectstr, namestr);
+	}
+	else
+	{
+	    _cairo_output_stream_printf (stream,
+		"    vec4 texel = texture2D%s (%s_sampler, %s_wrap (vec2 (t, 0.5)));\n"
+		"    return mix (vec4 (0.0), texel, is_valid);\n"
+		"}\n",
+		rectstr, namestr, namestr);
+	}
+	break;
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
+	_cairo_output_stream_printf (stream,
+	    "varying vec2 %s_texcoords;\n"
+	    "uniform vec2 %s_texdims;\n"
+	    "uniform sampler2D%s %s_sampler;\n"
+	    "uniform vec3 %s_circle_d;\n"
+	    "uniform float %s_a;\n"
+	    "uniform float %s_radius_0;\n"
+	    "\n"
+	    "vec4 get_%s()\n"
+	    "{\n"
+	    "    vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n"
+	    "    \n"
+	    "    float B = dot (pos, %s_circle_d);\n"
+	    "    float C = dot (pos, vec3 (pos.xy, -pos.z));\n"
+	    "    \n"
+	    "    float det = dot (vec2 (B, %s_a), vec2 (B, -C));\n"
+	    "    float sqrtdet = sqrt (abs (det));\n"
+	    "    vec2 t = (B + vec2 (sqrtdet, -sqrtdet)) / %s_a;\n"
+	    "    \n"
+	    "    vec2 is_valid = step (vec2 (0.0), t) * step (t, vec2(1.0));\n"
+	    "    float has_color = step (0., det) * max (is_valid.x, is_valid.y);\n"
+	    "    \n"
+	    "    float upper_t = mix (t.y, t.x, is_valid.x);\n",
+	    namestr, namestr, rectstr, namestr, namestr, namestr, namestr,
+	    namestr, namestr, namestr, namestr, namestr, namestr);
+	if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	     ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) &&
+	    _cairo_gl_shader_needs_border_fade (op))
+	{
+	    _cairo_output_stream_printf (stream,
+		"    float border_fade = %s_border_fade (upper_t, %s_texdims.x);\n"
+		"    vec4 texel = texture2D%s (%s_sampler, vec2 (upper_t, 0.5));\n"
+		"    return mix (vec4 (0.0), texel * border_fade, has_color);\n"
+		"}\n",
+		namestr, namestr, rectstr, namestr);
+	}
+	else
+	{
+	    _cairo_output_stream_printf (stream,
+		"    vec4 texel = texture2D%s (%s_sampler, %s_wrap (vec2(upper_t, 0.5)));\n"
+		"    return mix (vec4 (0.0), texel, has_color);\n"
+		"}\n",
+		rectstr, namestr, namestr);
+	}
+	break;
+    case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
+	_cairo_output_stream_printf (stream,
+	    "varying vec2 %s_texcoords;\n"
+	    "uniform sampler2D%s %s_sampler;\n"
+	    "uniform vec3 %s_circle_d;\n"
+	    "uniform float %s_a;\n"
+	    "uniform float %s_radius_0;\n"
+	    "\n"
+	    "vec4 get_%s()\n"
+	    "{\n"
+	    "    vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n"
+	    "    \n"
+	    "    float B = dot (pos, %s_circle_d);\n"
+	    "    float C = dot (pos, vec3 (pos.xy, -pos.z));\n"
+	    "    \n"
+	    "    float det = dot (vec2 (B, %s_a), vec2 (B, -C));\n"
+	    "    float sqrtdet = sqrt (abs (det));\n"
+	    "    vec2 t = (B + vec2 (sqrtdet, -sqrtdet)) / %s_a;\n"
+	    "    \n"
+	    "    vec2 is_valid = step (vec2 (-%s_radius_0), t * %s_circle_d.z);\n"
+	    "    float has_color = step (0., det) * max (is_valid.x, is_valid.y);\n"
+	    "    \n"
+	    "    float upper_t = mix (t.y, t.x, is_valid.x);\n"
+	    "    vec4 texel = texture2D%s (%s_sampler, %s_wrap (vec2(upper_t, 0.5)));\n"
+	    "    return mix (vec4 (0.0), texel, has_color);\n"
+	    "}\n",
+	    namestr, rectstr, namestr, namestr, namestr, namestr,
+	    namestr, namestr, namestr, namestr, namestr,
+	    namestr, namestr, namestr, rectstr, namestr, namestr);
+	break;
+    }
+}
+
+/*
+ * Emits the border fade functions used by an operand.
+ *
+ * If bilinear filtering is used, the emitted function performs a linear
+ * fade to transparency effect in the intervals [-1/2n, 1/2n] and
+ * [1 - 1/2n, 1 + 1/2n] (n: texture size).
+ *
+ * If nearest filtering is used, the emitted function just returns
+ * 0.0 for all values outside [0, 1).
+ */
+static void
+_cairo_gl_shader_emit_border_fade (cairo_output_stream_t *stream,
+				   cairo_gl_operand_t *operand,
+				   cairo_gl_tex_t name)
+{
+    const char *namestr = operand_names[name];
+    GLint gl_filter = _cairo_gl_operand_get_gl_filter (operand);
+
+    /* 2D version */
+    _cairo_output_stream_printf (stream,
+	"vec2 %s_border_fade (vec2 coords, vec2 dims)\n"
+	"{\n",
+	namestr);
+
+    if (gl_filter == GL_LINEAR)
+	_cairo_output_stream_printf (stream,
+	    "    return clamp(-abs(dims * (coords - 0.5)) + (dims + vec2(1.0)) * 0.5, 0.0, 1.0);\n");
+    else
+	_cairo_output_stream_printf (stream,
+	    "    bvec2 in_tex1 = greaterThanEqual (coords, vec2 (0.0));\n"
+	    "    bvec2 in_tex2 = lessThan (coords, vec2 (1.0));\n"
+	    "    return vec2 (float (all (in_tex1) && all (in_tex2)));\n");
+
+    _cairo_output_stream_printf (stream, "}\n");
+
+    /* 1D version */
+    _cairo_output_stream_printf (stream,
+	"float %s_border_fade (float x, float dim)\n"
+	"{\n",
+	namestr);
+    if (gl_filter == GL_LINEAR)
+	_cairo_output_stream_printf (stream,
+	    "    return clamp(-abs(dim * (x - 0.5)) + (dim + 1.0) * 0.5, 0.0, 1.0);\n");
+    else
+	_cairo_output_stream_printf (stream,
+	    "    bool in_tex = x >= 0.0 && x < 1.0;\n"
+	    "    return float (in_tex);\n");
+
+    _cairo_output_stream_printf (stream, "}\n");
+}
+
+/*
+ * Emits the wrap function used by an operand.
+ *
+ * In OpenGL ES 2.0, repeat wrap modes (GL_REPEAT and GL_MIRRORED REPEAT) are
+ * only available for NPOT textures if the GL_OES_texture_npot is supported.
+ * If GL_OES_texture_npot is not supported, we need to implement the wrapping
+ * functionality in the shader.
+ */
+static void
+_cairo_gl_shader_emit_wrap (cairo_gl_context_t *ctx,
+			    cairo_output_stream_t *stream,
+			    cairo_gl_operand_t *operand,
+			    cairo_gl_tex_t name)
+{
+    const char *namestr = operand_names[name];
+    cairo_extend_t extend = _cairo_gl_operand_get_extend (operand);
+
+    _cairo_output_stream_printf (stream,
+	"vec2 %s_wrap(vec2 coords)\n"
+	"{\n",
+	namestr);
+
+    if (! ctx->has_npot_repeat &&
+	(extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT))
+    {
+	if (extend == CAIRO_EXTEND_REPEAT) {
+	    _cairo_output_stream_printf (stream,
+		"    return fract(coords);\n");
+	} else { /* CAIRO_EXTEND_REFLECT */
+	    _cairo_output_stream_printf (stream,
+		"    return mix(fract(coords), 1.0 - fract(coords), floor(mod(coords, 2.0)));\n");
+	}
+    }
+    else
+    {
+	_cairo_output_stream_printf (stream, "    return coords;\n");
+    }
+
+    _cairo_output_stream_printf (stream, "}\n");
+}
+
+static cairo_status_t
+cairo_gl_shader_get_fragment_source (cairo_gl_context_t *ctx,
+				     cairo_gl_shader_in_t in,
+				     cairo_gl_operand_t *src,
+				     cairo_gl_operand_t *mask,
+				     cairo_bool_t use_coverage,
+				     cairo_gl_operand_type_t dest_type,
+				     char **out)
+{
+    cairo_output_stream_t *stream = _cairo_memory_stream_create ();
+    unsigned char *source;
+    unsigned long length;
+    cairo_status_t status;
+    const char *coverage_str;
+
+    _cairo_output_stream_printf (stream,
+	"#ifdef GL_ES\n"
+	"precision mediump float;\n"
+	"#endif\n");
+
+    _cairo_gl_shader_emit_wrap (ctx, stream, src, CAIRO_GL_TEX_SOURCE);
+    _cairo_gl_shader_emit_wrap (ctx, stream, mask, CAIRO_GL_TEX_MASK);
+
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3 ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2) {
+	if (_cairo_gl_shader_needs_border_fade (src))
+	    _cairo_gl_shader_emit_border_fade (stream, src, CAIRO_GL_TEX_SOURCE);
+	if (_cairo_gl_shader_needs_border_fade (mask))
+	    _cairo_gl_shader_emit_border_fade (stream, mask, CAIRO_GL_TEX_MASK);
+    }
+
+    cairo_gl_shader_emit_color (stream, ctx, src, CAIRO_GL_TEX_SOURCE);
+    cairo_gl_shader_emit_color (stream, ctx, mask, CAIRO_GL_TEX_MASK);
+
+    coverage_str = "";
+    if (use_coverage) {
+	_cairo_output_stream_printf (stream, "varying float coverage;\n");
+	coverage_str = " * coverage";
+    }
+
+    _cairo_output_stream_printf (stream,
+	"void main()\n"
+	"{\n");
+    switch (in) {
+    case CAIRO_GL_SHADER_IN_COUNT:
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_GL_SHADER_IN_NORMAL:
+	_cairo_output_stream_printf (stream,
+	    "    gl_FragColor = get_source() * get_mask().a%s;\n",
+	    coverage_str);
+	break;
+    case CAIRO_GL_SHADER_IN_CA_SOURCE:
+	_cairo_output_stream_printf (stream,
+	    "    gl_FragColor = get_source() * get_mask()%s;\n",
+	    coverage_str);
+	break;
+    case CAIRO_GL_SHADER_IN_CA_SOURCE_ALPHA:
+	_cairo_output_stream_printf (stream,
+	    "    gl_FragColor = get_source().a * get_mask()%s;\n",
+	    coverage_str);
+	break;
+    }
+
+    _cairo_output_stream_write (stream,
+				"}\n\0", 3);
+
+    status = _cairo_memory_stream_destroy (stream, &source, &length);
+    if (unlikely (status))
+	return status;
+
+    *out = (char *) source;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+compile_shader (cairo_gl_context_t *ctx,
+		GLuint *shader,
+		GLenum type,
+		const char *source)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    GLint success, log_size, num_chars;
+    char *log;
+
+    *shader = dispatch->CreateShader (type);
+    dispatch->ShaderSource (*shader, 1, &source, 0);
+    dispatch->CompileShader (*shader);
+    dispatch->GetShaderiv (*shader, GL_COMPILE_STATUS, &success);
+
+    if (success)
+	return;
+
+    dispatch->GetShaderiv (*shader, GL_INFO_LOG_LENGTH, &log_size);
+    if (log_size < 0) {
+	printf ("OpenGL shader compilation failed.\n");
+	ASSERT_NOT_REACHED;
+	return;
+    }
+
+    log = _cairo_malloc (log_size + 1);
+    dispatch->GetShaderInfoLog (*shader, log_size, &num_chars, log);
+    log[num_chars] = '\0';
+
+    printf ("OpenGL shader compilation failed.  Shader:\n%s\n", source);
+    printf ("OpenGL compilation log:\n%s\n", log);
+
+    free (log);
+    ASSERT_NOT_REACHED;
+}
+
+static void
+link_shader_program (cairo_gl_context_t *ctx,
+		     GLuint *program,
+		     GLuint vert,
+		     GLuint frag)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    GLint success, log_size, num_chars;
+    char *log;
+
+    *program = dispatch->CreateProgram ();
+    dispatch->AttachShader (*program, vert);
+    dispatch->AttachShader (*program, frag);
+
+    dispatch->BindAttribLocation (*program, CAIRO_GL_VERTEX_ATTRIB_INDEX,
+				  "Vertex");
+    dispatch->BindAttribLocation (*program, CAIRO_GL_COLOR_ATTRIB_INDEX,
+				  "Color");
+    dispatch->BindAttribLocation (*program, CAIRO_GL_TEXCOORD0_ATTRIB_INDEX,
+				  "MultiTexCoord0");
+    dispatch->BindAttribLocation (*program, CAIRO_GL_TEXCOORD1_ATTRIB_INDEX,
+				  "MultiTexCoord1");
+
+    dispatch->LinkProgram (*program);
+    dispatch->GetProgramiv (*program, GL_LINK_STATUS, &success);
+    if (success)
+	return;
+
+    dispatch->GetProgramiv (*program, GL_INFO_LOG_LENGTH, &log_size);
+    if (log_size < 0) {
+	printf ("OpenGL shader link failed.\n");
+	ASSERT_NOT_REACHED;
+	return;
+    }
+
+    log = _cairo_malloc (log_size + 1);
+    dispatch->GetProgramInfoLog (*program, log_size, &num_chars, log);
+    log[num_chars] = '\0';
+
+    printf ("OpenGL shader link failed:\n%s\n", log);
+    free (log);
+    ASSERT_NOT_REACHED;
+}
+
+static GLint
+_cairo_gl_get_op_uniform_location(cairo_gl_context_t *ctx,
+				  cairo_gl_shader_t  *shader,
+				  cairo_gl_tex_t      tex_unit,
+				  const char         *suffix)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    char uniform_name[100];
+    const char *unit_name[2] = { "source", "mask" };
+
+    snprintf (uniform_name, sizeof (uniform_name), "%s_%s",
+	      unit_name[tex_unit], suffix);
+
+    return dispatch->GetUniformLocation (shader->program, uniform_name);
+}
+
+static cairo_status_t
+_cairo_gl_shader_compile_and_link (cairo_gl_context_t *ctx,
+				   cairo_gl_shader_t *shader,
+				   cairo_gl_var_type_t src,
+				   cairo_gl_var_type_t mask,
+				   cairo_bool_t use_coverage,
+				   const char *fragment_text)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    unsigned int vertex_shader;
+    cairo_status_t status;
+    int i;
+
+    assert (shader->program == 0);
+
+    vertex_shader = cairo_gl_var_type_hash (src, mask, use_coverage,
+					    CAIRO_GL_VAR_NONE);
+    if (ctx->vertex_shaders[vertex_shader] == 0) {
+	char *source;
+
+	status = cairo_gl_shader_get_vertex_source (src,
+						    mask,
+						    use_coverage,
+						    CAIRO_GL_VAR_NONE,
+						    &source);
+	if (unlikely (status))
+	    goto FAILURE;
+
+	compile_shader (ctx, &ctx->vertex_shaders[vertex_shader],
+			GL_VERTEX_SHADER, source);
+	free (source);
+    }
+
+    compile_shader (ctx, &shader->fragment_shader,
+		    GL_FRAGMENT_SHADER, fragment_text);
+
+    link_shader_program (ctx, &shader->program,
+			 ctx->vertex_shaders[vertex_shader],
+			 shader->fragment_shader);
+
+    shader->mvp_location =
+	dispatch->GetUniformLocation (shader->program,
+				      "ModelViewProjectionMatrix");
+
+    for (i = 0; i < 2; i++) {
+	shader->constant_location[i] =
+	    _cairo_gl_get_op_uniform_location (ctx, shader, i, "constant");
+	shader->a_location[i] =
+	    _cairo_gl_get_op_uniform_location (ctx, shader, i, "a");
+	shader->circle_d_location[i] =
+	    _cairo_gl_get_op_uniform_location (ctx, shader, i, "circle_d");
+	shader->radius_0_location[i] =
+	    _cairo_gl_get_op_uniform_location (ctx, shader, i, "radius_0");
+	shader->texdims_location[i] =
+	    _cairo_gl_get_op_uniform_location (ctx, shader, i, "texdims");
+	shader->texgen_location[i] =
+	    _cairo_gl_get_op_uniform_location (ctx, shader, i, "texgen");
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+ FAILURE:
+    _cairo_gl_shader_fini (ctx, shader);
+    shader->fragment_shader = 0;
+    shader->program = 0;
+
+    return status;
+}
+
+/* We always bind the source to texture unit 0 if present, and mask to
+ * texture unit 1 if present, so we can just initialize these once at
+ * compile time.
+ */
+static void
+_cairo_gl_shader_set_samplers (cairo_gl_context_t *ctx,
+			       cairo_gl_shader_t *shader)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    GLint location;
+    GLint saved_program;
+
+    /* We have to save/restore the current program because we might be
+     * asked for a different program while a shader is bound.  This shouldn't
+     * be a performance issue, since this is only called once per compile.
+     */
+    glGetIntegerv (GL_CURRENT_PROGRAM, &saved_program);
+    dispatch->UseProgram (shader->program);
+
+    location = dispatch->GetUniformLocation (shader->program, "source_sampler");
+    if (location != -1) {
+	dispatch->Uniform1i (location, CAIRO_GL_TEX_SOURCE);
+    }
+
+    location = dispatch->GetUniformLocation (shader->program, "mask_sampler");
+    if (location != -1) {
+	dispatch->Uniform1i (location, CAIRO_GL_TEX_MASK);
+    }
+
+    dispatch->UseProgram (saved_program);
+}
+
+void
+_cairo_gl_shader_bind_float (cairo_gl_context_t *ctx,
+			     GLint location,
+			     float value)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    assert (location != -1);
+    dispatch->Uniform1f (location, value);
+}
+
+void
+_cairo_gl_shader_bind_vec2 (cairo_gl_context_t *ctx,
+			    GLint location,
+			    float value0,
+			    float value1)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    assert (location != -1);
+    dispatch->Uniform2f (location, value0, value1);
+}
+
+void
+_cairo_gl_shader_bind_vec3 (cairo_gl_context_t *ctx,
+			    GLint location,
+			    float value0,
+			    float value1,
+			    float value2)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    assert (location != -1);
+    dispatch->Uniform3f (location, value0, value1, value2);
+}
+
+void
+_cairo_gl_shader_bind_vec4 (cairo_gl_context_t *ctx,
+			    GLint location,
+			    float value0, float value1,
+			    float value2, float value3)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    assert (location != -1);
+    dispatch->Uniform4f (location, value0, value1, value2, value3);
+}
+
+void
+_cairo_gl_shader_bind_matrix (cairo_gl_context_t *ctx,
+			      GLint location,
+			      const cairo_matrix_t* m)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    float gl_m[9] = {
+	m->xx, m->yx, 0,
+	m->xy, m->yy, 0,
+	m->x0, m->y0, 1
+    };
+    assert (location != -1);
+    dispatch->UniformMatrix3fv (location, 1, GL_FALSE, gl_m);
+}
+
+void
+_cairo_gl_shader_bind_matrix4f (cairo_gl_context_t *ctx,
+				GLint location, GLfloat* gl_m)
+{
+    cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
+    assert (location != -1);
+    dispatch->UniformMatrix4fv (location, 1, GL_FALSE, gl_m);
+}
+
+void
+_cairo_gl_set_shader (cairo_gl_context_t *ctx,
+		      cairo_gl_shader_t *shader)
+{
+    if (ctx->current_shader == shader)
+	return;
+
+    if (shader)
+	ctx->dispatch.UseProgram (shader->program);
+    else
+	ctx->dispatch.UseProgram (0);
+
+    ctx->current_shader = shader;
+}
+
+cairo_status_t
+_cairo_gl_get_shader_by_type (cairo_gl_context_t *ctx,
+			      cairo_gl_operand_t *source,
+			      cairo_gl_operand_t *mask,
+			      cairo_bool_t use_coverage,
+			      cairo_gl_shader_in_t in,
+			      cairo_gl_shader_t **shader)
+{
+    cairo_shader_cache_entry_t lookup, *entry;
+    char *fs_source;
+    cairo_status_t status;
+
+    lookup.ctx = ctx;
+
+    lookup.vertex = cairo_gl_var_type_hash (cairo_gl_operand_get_var_type (source),
+					    cairo_gl_operand_get_var_type (mask),
+					    use_coverage,
+					    CAIRO_GL_VAR_NONE);
+
+    lookup.src = source->type;
+    lookup.mask = mask->type;
+    lookup.dest = CAIRO_GL_OPERAND_NONE;
+    lookup.use_coverage = use_coverage;
+    lookup.in = in;
+    lookup.src_gl_filter = _cairo_gl_operand_get_gl_filter (source);
+    lookup.src_border_fade = _cairo_gl_shader_needs_border_fade (source);
+    lookup.src_extend = _cairo_gl_operand_get_extend (source);
+    lookup.mask_gl_filter = _cairo_gl_operand_get_gl_filter (mask);
+    lookup.mask_border_fade = _cairo_gl_shader_needs_border_fade (mask);
+    lookup.mask_extend = _cairo_gl_operand_get_extend (mask);
+    lookup.base.hash = _cairo_gl_shader_cache_hash (&lookup);
+    lookup.base.size = 1;
+
+    entry = _cairo_cache_lookup (&ctx->shaders, &lookup.base);
+    if (entry) {
+	assert (entry->shader.program);
+	*shader = &entry->shader;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = cairo_gl_shader_get_fragment_source (ctx,
+						  in,
+						  source,
+						  mask,
+						  use_coverage,
+						  CAIRO_GL_OPERAND_NONE,
+						  &fs_source);
+    if (unlikely (status))
+	return status;
+
+    entry = _cairo_malloc (sizeof (cairo_shader_cache_entry_t));
+    if (unlikely (entry == NULL)) {
+	free (fs_source);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    memcpy (entry, &lookup, sizeof (cairo_shader_cache_entry_t));
+
+    entry->ctx = ctx;
+    _cairo_gl_shader_init (&entry->shader);
+    status = _cairo_gl_shader_compile_and_link (ctx,
+						&entry->shader,
+						cairo_gl_operand_get_var_type (source),
+						cairo_gl_operand_get_var_type (mask),
+						use_coverage,
+						fs_source);
+    free (fs_source);
+
+    if (unlikely (status)) {
+	free (entry);
+	return status;
+    }
+
+    _cairo_gl_shader_set_samplers (ctx, &entry->shader);
+
+    status = _cairo_cache_insert (&ctx->shaders, &entry->base);
+    if (unlikely (status)) {
+	_cairo_gl_shader_fini (ctx, &entry->shader);
+	free (entry);
+	return status;
+    }
+
+    *shader = &entry->shader;
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-source.c b/libs/cairo-1.16.0/src/cairo-gl-source.c
new file mode 100644
index 0000000..7e0ee4a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-source.c
@@ -0,0 +1,113 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-surface-backend-private.h"
+
+static cairo_status_t
+_cairo_gl_source_finish (void *abstract_surface)
+{
+    cairo_gl_source_t *source = abstract_surface;
+
+    _cairo_gl_operand_destroy (&source->operand);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t cairo_gl_source_backend = {
+    CAIRO_SURFACE_TYPE_GL,
+    _cairo_gl_source_finish,
+    NULL, /* read-only wrapper */
+};
+
+cairo_surface_t *
+_cairo_gl_pattern_to_source (cairo_surface_t *dst,
+			     const cairo_pattern_t *pattern,
+			     cairo_bool_t is_mask,
+			     const cairo_rectangle_int_t *extents,
+			     const cairo_rectangle_int_t *sample,
+			     int *src_x, int *src_y)
+{
+    cairo_gl_source_t *source;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (pattern == NULL)
+	return _cairo_gl_white_source ();
+
+    source = _cairo_malloc (sizeof (*source));
+    if (unlikely (source == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&source->base,
+			 &cairo_gl_source_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 FALSE); /* is_vector */
+
+    *src_x = *src_y = 0;
+    status = _cairo_gl_operand_init (&source->operand, pattern,
+				     (cairo_gl_surface_t *)dst,
+				     sample, extents,
+				     FALSE);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&source->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return &source->base;
+}
+
+cairo_surface_t *
+_cairo_gl_white_source (void)
+{
+    cairo_gl_source_t *source;
+
+    source = _cairo_malloc (sizeof (*source));
+    if (unlikely (source == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&source->base,
+			 &cairo_gl_source_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 FALSE); /* is_vector */
+
+    _cairo_gl_solid_operand_init (&source->operand, CAIRO_COLOR_WHITE);
+
+    return &source->base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c b/libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c
new file mode 100644
index 0000000..0a4538a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-spans-compositor.c
@@ -0,0 +1,556 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-spans-compositor-private.h"
+#include "cairo-surface-backend-private.h"
+
+typedef struct _cairo_gl_span_renderer {
+    cairo_span_renderer_t base;
+
+    cairo_gl_composite_t setup;
+    double opacity;
+
+    cairo_gl_emit_span_t emit;
+
+    int xmin, xmax;
+    int ymin, ymax;
+
+    cairo_gl_context_t *ctx;
+} cairo_gl_span_renderer_t;
+
+static cairo_status_t
+_cairo_gl_bounded_opaque_spans (void *abstract_renderer,
+				int y, int height,
+				const cairo_half_open_span_t *spans,
+				unsigned num_spans)
+{
+    cairo_gl_span_renderer_t *r = abstract_renderer;
+    cairo_gl_emit_span_t emit = r->emit;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (spans[0].coverage) {
+	    emit (r->ctx,
+		  spans[0].x, y,
+		  spans[1].x, y + height,
+		  spans[0].coverage);
+	}
+
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_bounded_spans (void *abstract_renderer,
+			 int y, int height,
+			 const cairo_half_open_span_t *spans,
+			 unsigned num_spans)
+{
+    cairo_gl_span_renderer_t *r = abstract_renderer;
+    cairo_gl_emit_span_t emit = r->emit;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (spans[0].coverage) {
+	    emit (r->ctx,
+		  spans[0].x, y,
+		  spans[1].x, y + height,
+		  r->opacity * spans[0].coverage);
+	}
+
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_unbounded_spans (void *abstract_renderer,
+			   int y, int height,
+			   const cairo_half_open_span_t *spans,
+			   unsigned num_spans)
+{
+    cairo_gl_span_renderer_t *r = abstract_renderer;
+    cairo_gl_emit_span_t emit = r->emit;
+
+    if (y > r->ymin) {
+	emit (r->ctx,
+	      r->xmin, r->ymin,
+	      r->xmax, y,
+	      0);
+    }
+
+    if (num_spans == 0) {
+	emit (r->ctx,
+	      r->xmin, y,
+	      r->xmax, y + height,
+	      0);
+    } else {
+	if (spans[0].x != r->xmin) {
+	    emit (r->ctx,
+		  r->xmin, y,
+		  spans[0].x,     y + height,
+		  0);
+	}
+
+	do {
+	    emit (r->ctx,
+		  spans[0].x, y,
+		  spans[1].x, y + height,
+		  r->opacity * spans[0].coverage);
+	    spans++;
+	} while (--num_spans > 1);
+
+	if (spans[0].x != r->xmax) {
+	    emit (r->ctx,
+		  spans[0].x,     y,
+		  r->xmax, y + height,
+		  0);
+	}
+    }
+
+    r->ymin = y + height;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* XXX */
+static cairo_status_t
+_cairo_gl_clipped_spans (void *abstract_renderer,
+			   int y, int height,
+			   const cairo_half_open_span_t *spans,
+			   unsigned num_spans)
+{
+    cairo_gl_span_renderer_t *r = abstract_renderer;
+    cairo_gl_emit_span_t emit = r->emit;
+
+    if (y > r->ymin) {
+	emit (r->ctx,
+	      r->xmin, r->ymin,
+	      r->xmax, y,
+	      0);
+    }
+
+    if (num_spans == 0) {
+	emit (r->ctx,
+	      r->xmin, y,
+	      r->xmax, y + height,
+	      0);
+    } else {
+	if (spans[0].x != r->xmin) {
+	    emit (r->ctx,
+		  r->xmin, y,
+		  spans[0].x,     y + height,
+		  0);
+	}
+
+	do {
+	    emit (r->ctx,
+		  spans[0].x, y,
+		  spans[1].x, y + height,
+		  r->opacity * spans[0].coverage);
+	    spans++;
+	} while (--num_spans > 1);
+
+	if (spans[0].x != r->xmax) {
+	    emit (r->ctx,
+		  spans[0].x,     y,
+		  r->xmax, y + height,
+		  0);
+	}
+    }
+
+    r->ymin = y + height;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gl_finish_unbounded_spans (void *abstract_renderer)
+{
+    cairo_gl_span_renderer_t *r = abstract_renderer;
+    cairo_gl_emit_span_t emit = r->emit;
+
+    if (r->ymax > r->ymin) {
+	emit (r->ctx,
+	      r->xmin, r->ymin,
+	      r->xmax, r->ymax,
+	      0);
+    }
+
+    return _cairo_gl_context_release (r->ctx, CAIRO_STATUS_SUCCESS);
+}
+
+static cairo_status_t
+_cairo_gl_finish_bounded_spans (void *abstract_renderer)
+{
+    cairo_gl_span_renderer_t *r = abstract_renderer;
+
+    return _cairo_gl_context_release (r->ctx, CAIRO_STATUS_SUCCESS);
+}
+
+static void
+emit_aligned_boxes (cairo_gl_context_t *ctx,
+		    const cairo_boxes_t *boxes)
+{
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_gl_emit_rect_t emit = _cairo_gl_context_choose_emit_rect (ctx);
+    int i;
+
+    TRACE ((stderr, "%s: num_boxes=%d\n", __FUNCTION__, boxes->num_boxes));
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+	    int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+	    int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+	    int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+	    emit (ctx, x1, y1, x2, y2);
+	}
+    }
+}
+
+static cairo_int_status_t
+fill_boxes (void		*_dst,
+	    cairo_operator_t	 op,
+	    const cairo_color_t	*color,
+	    cairo_boxes_t	*boxes)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+   _cairo_gl_composite_set_solid_source (&setup, color);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    emit_aligned_boxes (ctx, boxes);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_int_status_t
+draw_image_boxes (void *_dst,
+		  cairo_image_surface_t *image,
+		  cairo_boxes_t *boxes,
+		  int dx, int dy)
+{
+    cairo_gl_surface_t *dst = _dst;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    cairo_box_t *b = &chunk->base[i];
+	    int x = _cairo_fixed_integer_part (b->p1.x);
+	    int y = _cairo_fixed_integer_part (b->p1.y);
+	    int w = _cairo_fixed_integer_part (b->p2.x) - x;
+	    int h = _cairo_fixed_integer_part (b->p2.y) - y;
+	    cairo_status_t status;
+
+	    status = _cairo_gl_surface_draw_image (dst, image,
+						   x + dx, y + dy,
+						   w, h,
+						   x, y, TRUE);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t copy_boxes (void *_dst,
+				      cairo_surface_t *_src,
+				      cairo_boxes_t *boxes,
+				      const cairo_rectangle_int_t *extents,
+				      int dx, int dy)
+{
+    cairo_gl_surface_t *dst = _dst;
+    cairo_gl_surface_t *src = (cairo_gl_surface_t *)_src;
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (! _cairo_gl_surface_is_texture (src))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (src->base.device != dst->base.device)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_gl_composite_init (&setup, CAIRO_OPERATOR_SOURCE, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_source_operand (&setup, &src->operand);
+    _cairo_gl_operand_translate (&setup.src, -dx, -dy);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    emit_aligned_boxes (ctx, boxes);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_int_status_t
+composite_boxes (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 cairo_surface_t	*abstract_mask,
+		 int			src_x,
+		 int			src_y,
+		 int			mask_x,
+		 int			mask_y,
+		 int			dst_x,
+		 int			dst_y,
+		 cairo_boxes_t		*boxes,
+		 const cairo_rectangle_int_t  *extents)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+    cairo_gl_operand_t tmp_operand;
+    cairo_gl_operand_t *src_operand;
+
+    TRACE ((stderr, "%s mask=(%d,%d), dst=(%d, %d)\n", __FUNCTION__,
+	    mask_x, mask_y, dst_x, dst_y));
+
+    if (abstract_mask) {
+	if (op == CAIRO_OPERATOR_CLEAR) {
+	    _cairo_gl_solid_operand_init (&tmp_operand, CAIRO_COLOR_WHITE);
+	    src_operand = &tmp_operand;
+	    op = CAIRO_OPERATOR_DEST_OUT;
+	} else if (op == CAIRO_OPERATOR_SOURCE) {
+	    /* requires a LERP in the shader between dest and source */
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	} else
+	    src_operand = source_to_operand (abstract_src);
+    } else
+	src_operand = source_to_operand (abstract_src);
+
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_source_operand (&setup,
+					    src_operand);
+    _cairo_gl_operand_translate (&setup.src, -src_x, -src_y);
+
+    _cairo_gl_composite_set_mask_operand (&setup,
+					  source_to_operand (abstract_mask));
+    _cairo_gl_operand_translate (&setup.mask, -mask_x, -mask_y);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    emit_aligned_boxes (ctx, boxes);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    if (src_operand == &tmp_operand)
+	_cairo_gl_operand_destroy (&tmp_operand);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_gl_span_renderer_init (cairo_abstract_span_renderer_t	*_r,
+			      const cairo_composite_rectangles_t *composite,
+			      cairo_antialias_t			 antialias,
+			      cairo_bool_t			 needs_clip)
+{
+    cairo_gl_span_renderer_t *r = (cairo_gl_span_renderer_t *)_r;
+    const cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_operator_t op = composite->op;
+    cairo_int_status_t status;
+
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	if (! _cairo_pattern_is_opaque (&composite->source_pattern.base,
+					&composite->source_sample_area))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	op = CAIRO_OPERATOR_OVER;
+    }
+
+    /* XXX earlier! */
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	source = &_cairo_pattern_white.base;
+	op = CAIRO_OPERATOR_DEST_OUT;
+    } else if (composite->surface->is_clear &&
+	       (op == CAIRO_OPERATOR_SOURCE ||
+		op == CAIRO_OPERATOR_OVER ||
+		op == CAIRO_OPERATOR_ADD)) {
+	op = CAIRO_OPERATOR_SOURCE;
+    } else if (op == CAIRO_OPERATOR_SOURCE) {
+	/* no lerp equivalent without some major PITA */
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    } else if (! _cairo_gl_operator_is_supported (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_gl_composite_init (&r->setup,
+				       op, (cairo_gl_surface_t *)composite->surface,
+				       FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    status = _cairo_gl_composite_set_source (&r->setup, source,
+					     &composite->source_sample_area,
+					     &composite->unbounded,
+					     TRUE);
+    if (unlikely (status))
+	goto FAIL;
+
+    r->opacity = 1.0;
+    if (composite->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
+	r->opacity = composite->mask_pattern.solid.color.alpha;
+    } else {
+	status = _cairo_gl_composite_set_mask (&r->setup,
+					       &composite->mask_pattern.base,
+					       &composite->mask_sample_area,
+					       &composite->unbounded,
+					       TRUE);
+	if (unlikely (status))
+	    goto FAIL;
+    }
+
+    _cairo_gl_composite_set_spans (&r->setup);
+
+    status = _cairo_gl_composite_begin (&r->setup, &r->ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    r->emit = _cairo_gl_context_choose_emit_span (r->ctx);
+    if (composite->is_bounded) {
+	if (r->opacity == 1.)
+	    r->base.render_rows = _cairo_gl_bounded_opaque_spans;
+	else
+	    r->base.render_rows = _cairo_gl_bounded_spans;
+	r->base.finish = _cairo_gl_finish_bounded_spans;
+    } else {
+	if (needs_clip)
+	    r->base.render_rows = _cairo_gl_clipped_spans;
+	else
+	    r->base.render_rows = _cairo_gl_unbounded_spans;
+	r->base.finish = _cairo_gl_finish_unbounded_spans;
+	r->xmin = composite->unbounded.x;
+	r->xmax = composite->unbounded.x + composite->unbounded.width;
+	r->ymin = composite->unbounded.y;
+	r->ymax = composite->unbounded.y + composite->unbounded.height;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+FAIL:
+    return status;
+}
+
+static void
+_cairo_gl_span_renderer_fini (cairo_abstract_span_renderer_t *_r,
+			      cairo_int_status_t status)
+{
+    cairo_gl_span_renderer_t *r = (cairo_gl_span_renderer_t *) _r;
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	return;
+
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	r->base.finish (r);
+
+    _cairo_gl_composite_fini (&r->setup);
+}
+
+const cairo_compositor_t *
+_cairo_gl_span_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_spans_compositor_t spans;
+    static cairo_compositor_t shape;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	/* The fallback to traps here is essentially just for glyphs... */
+	_cairo_shape_mask_compositor_init (&shape,
+					   _cairo_gl_traps_compositor_get());
+	shape.glyphs = NULL;
+
+	_cairo_spans_compositor_init (&spans, &shape);
+	spans.fill_boxes = fill_boxes;
+	spans.draw_image_boxes = draw_image_boxes;
+	spans.copy_boxes = copy_boxes;
+	//spans.check_composite_boxes = check_composite_boxes;
+	spans.pattern_to_surface = _cairo_gl_pattern_to_source;
+	spans.composite_boxes = composite_boxes;
+	//spans.check_span_renderer = check_span_renderer;
+	spans.renderer_init = _cairo_gl_span_renderer_init;
+	spans.renderer_fini = _cairo_gl_span_renderer_fini;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &spans.base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl-surface.c b/libs/cairo-1.16.0/src/cairo-gl-surface.c
new file mode 100644
index 0000000..12ea3dd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-surface.c
@@ -0,0 +1,1550 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-surface-backend-private.h"
+
+static const cairo_surface_backend_t _cairo_gl_surface_backend;
+
+static cairo_status_t
+_cairo_gl_surface_flush (void *abstract_surface, unsigned flags);
+
+static cairo_bool_t _cairo_surface_is_gl (cairo_surface_t *surface)
+{
+    return surface->backend == &_cairo_gl_surface_backend;
+}
+
+static cairo_bool_t
+_cairo_gl_get_image_format_and_type_gles2 (pixman_format_code_t pixman_format,
+					   GLenum *internal_format, GLenum *format,
+					   GLenum *type, cairo_bool_t *has_alpha,
+					   cairo_bool_t *needs_swap)
+{
+    cairo_bool_t is_little_endian = _cairo_is_little_endian ();
+
+    *has_alpha = TRUE;
+
+    switch ((int) pixman_format) {
+    case PIXMAN_a8r8g8b8:
+	*internal_format = GL_BGRA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_BYTE;
+	*needs_swap = !is_little_endian;
+	return TRUE;
+
+    case PIXMAN_x8r8g8b8:
+	*internal_format = GL_BGRA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_BYTE;
+	*has_alpha = FALSE;
+	*needs_swap = !is_little_endian;
+	return TRUE;
+
+    case PIXMAN_a8b8g8r8:
+	*internal_format = GL_RGBA;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_BYTE;
+	*needs_swap = !is_little_endian;
+	return TRUE;
+
+    case PIXMAN_x8b8g8r8:
+	*internal_format = GL_RGBA;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_BYTE;
+	*has_alpha = FALSE;
+	*needs_swap = !is_little_endian;
+	return TRUE;
+
+    case PIXMAN_b8g8r8a8:
+	*internal_format = GL_BGRA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_BYTE;
+	*needs_swap = is_little_endian;
+	return TRUE;
+
+    case PIXMAN_b8g8r8x8:
+	*internal_format = GL_BGRA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_BYTE;
+	*has_alpha = FALSE;
+	*needs_swap = is_little_endian;
+	return TRUE;
+
+    case PIXMAN_r8g8b8:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_BYTE;
+	*needs_swap = is_little_endian;
+	return TRUE;
+
+    case PIXMAN_b8g8r8:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_BYTE;
+	*needs_swap = !is_little_endian;
+	return TRUE;
+
+    case PIXMAN_r5g6b5:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_SHORT_5_6_5;
+	*needs_swap = FALSE;
+	return TRUE;
+
+    case PIXMAN_b5g6r5:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_SHORT_5_6_5;
+	*needs_swap = TRUE;
+	return TRUE;
+
+    case PIXMAN_a1b5g5r5:
+	*internal_format = GL_RGBA;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_SHORT_5_5_5_1;
+	*needs_swap = TRUE;
+	return TRUE;
+
+    case PIXMAN_x1b5g5r5:
+	*internal_format = GL_RGBA;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_SHORT_5_5_5_1;
+	*has_alpha = FALSE;
+	*needs_swap = TRUE;
+	return TRUE;
+
+    case PIXMAN_a8:
+	*internal_format = GL_ALPHA;
+	*format = GL_ALPHA;
+	*type = GL_UNSIGNED_BYTE;
+	*needs_swap = FALSE;
+	return TRUE;
+
+    default:
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+_cairo_gl_get_image_format_and_type_gl (pixman_format_code_t pixman_format,
+					GLenum *internal_format, GLenum *format,
+					GLenum *type, cairo_bool_t *has_alpha,
+					cairo_bool_t *needs_swap)
+{
+    *has_alpha = TRUE;
+    *needs_swap = FALSE;
+
+    switch (pixman_format) {
+    case PIXMAN_a8r8g8b8:
+	*internal_format = GL_RGBA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	return TRUE;
+    case PIXMAN_x8r8g8b8:
+	*internal_format = GL_RGB;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	*has_alpha = FALSE;
+	return TRUE;
+    case PIXMAN_a8b8g8r8:
+	*internal_format = GL_RGBA;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	return TRUE;
+    case PIXMAN_x8b8g8r8:
+	*internal_format = GL_RGB;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	*has_alpha = FALSE;
+	return TRUE;
+    case PIXMAN_b8g8r8a8:
+	*internal_format = GL_RGBA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_INT_8_8_8_8;
+	return TRUE;
+    case PIXMAN_b8g8r8x8:
+	*internal_format = GL_RGB;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_INT_8_8_8_8;
+	*has_alpha = FALSE;
+	return TRUE;
+    case PIXMAN_r8g8b8:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_BYTE;
+	return TRUE;
+    case PIXMAN_b8g8r8:
+	*internal_format = GL_RGB;
+	*format = GL_BGR;
+	*type = GL_UNSIGNED_BYTE;
+	return TRUE;
+    case PIXMAN_r5g6b5:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_SHORT_5_6_5;
+	return TRUE;
+    case PIXMAN_b5g6r5:
+	*internal_format = GL_RGB;
+	*format = GL_RGB;
+	*type = GL_UNSIGNED_SHORT_5_6_5_REV;
+	return TRUE;
+    case PIXMAN_a1r5g5b5:
+	*internal_format = GL_RGBA;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
+	return TRUE;
+    case PIXMAN_x1r5g5b5:
+	*internal_format = GL_RGB;
+	*format = GL_BGRA;
+	*type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
+	*has_alpha = FALSE;
+	return TRUE;
+    case PIXMAN_a1b5g5r5:
+	*internal_format = GL_RGBA;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
+	return TRUE;
+    case PIXMAN_x1b5g5r5:
+	*internal_format = GL_RGB;
+	*format = GL_RGBA;
+	*type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
+	*has_alpha = FALSE;
+	return TRUE;
+    case PIXMAN_a8:
+	*internal_format = GL_ALPHA;
+	*format = GL_ALPHA;
+	*type = GL_UNSIGNED_BYTE;
+	return TRUE;
+
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,27,2)
+    case PIXMAN_a8r8g8b8_sRGB:
+#endif
+    case PIXMAN_a2b10g10r10:
+    case PIXMAN_x2b10g10r10:
+    case PIXMAN_a4r4g4b4:
+    case PIXMAN_x4r4g4b4:
+    case PIXMAN_a4b4g4r4:
+    case PIXMAN_x4b4g4r4:
+    case PIXMAN_r3g3b2:
+    case PIXMAN_b2g3r3:
+    case PIXMAN_a2r2g2b2:
+    case PIXMAN_a2b2g2r2:
+    case PIXMAN_c8:
+    case PIXMAN_x4a4:
+    /* case PIXMAN_x4c4: */
+    case PIXMAN_x4g4:
+    case PIXMAN_a4:
+    case PIXMAN_r1g2b1:
+    case PIXMAN_b1g2r1:
+    case PIXMAN_a1r1g1b1:
+    case PIXMAN_a1b1g1r1:
+    case PIXMAN_c4:
+    case PIXMAN_g4:
+    case PIXMAN_a1:
+    case PIXMAN_g1:
+    case PIXMAN_yuy2:
+    case PIXMAN_yv12:
+    case PIXMAN_x2r10g10b10:
+    case PIXMAN_a2r10g10b10:
+    case PIXMAN_r8g8b8x8:
+    case PIXMAN_r8g8b8a8:
+    case PIXMAN_x14r6g6b6:
+    default:
+	return FALSE;
+    }
+}
+
+/*
+ * Extracts pixel data from an image surface.
+ */
+static cairo_status_t
+_cairo_gl_surface_extract_image_data (cairo_image_surface_t *image,
+				      int x, int y,
+				      int width, int height,
+				      void **output)
+{
+    int cpp = PIXMAN_FORMAT_BPP (image->pixman_format) / 8;
+    char *data = _cairo_malloc_ab (width * height, cpp);
+    char *dst = data;
+    unsigned char *src = image->data + y * image->stride + x * cpp;
+    int i;
+
+    if (unlikely (data == NULL))
+	return CAIRO_STATUS_NO_MEMORY;
+
+    for (i = 0; i < height; i++) {
+	memcpy (dst, src, width * cpp);
+	src += image->stride;
+	dst += width * cpp;
+    }
+
+    *output = data;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_bool_t
+_cairo_gl_get_image_format_and_type (cairo_gl_flavor_t flavor,
+				     pixman_format_code_t pixman_format,
+				     GLenum *internal_format, GLenum *format,
+				     GLenum *type, cairo_bool_t *has_alpha,
+				     cairo_bool_t *needs_swap)
+{
+    if (flavor == CAIRO_GL_FLAVOR_DESKTOP)
+	return _cairo_gl_get_image_format_and_type_gl (pixman_format,
+						       internal_format, format,
+						       type, has_alpha,
+						       needs_swap);
+    else
+	return _cairo_gl_get_image_format_and_type_gles2 (pixman_format,
+							  internal_format, format,
+							  type, has_alpha,
+							  needs_swap);
+
+}
+
+cairo_bool_t
+_cairo_gl_operator_is_supported (cairo_operator_t op)
+{
+    return op < CAIRO_OPERATOR_SATURATE;
+}
+
+static void
+_cairo_gl_surface_embedded_operand_init (cairo_gl_surface_t *surface)
+{
+    cairo_gl_operand_t *operand = &surface->operand;
+    cairo_surface_attributes_t *attributes = &operand->texture.attributes;
+
+    memset (operand, 0, sizeof (cairo_gl_operand_t));
+
+    operand->type = CAIRO_GL_OPERAND_TEXTURE;
+    operand->texture.surface = surface;
+    operand->texture.tex = surface->tex;
+
+    if (_cairo_gl_device_requires_power_of_two_textures (surface->base.device)) {
+	cairo_matrix_init_identity (&attributes->matrix);
+    } else {
+	cairo_matrix_init_scale (&attributes->matrix,
+				 1.0 / surface->width,
+				 1.0 / surface->height);
+    }
+
+    attributes->extend = CAIRO_EXTEND_NONE;
+    attributes->filter = CAIRO_FILTER_NEAREST;
+}
+
+void
+_cairo_gl_surface_init (cairo_device_t *device,
+			cairo_gl_surface_t *surface,
+			cairo_content_t content,
+			int width, int height)
+{
+    assert (width > 0 && height > 0);
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_gl_surface_backend,
+			 device,
+			 content,
+			 FALSE); /* is_vector */
+
+    surface->width = width;
+    surface->height = height;
+    surface->needs_update = FALSE;
+    surface->content_in_texture = FALSE;
+
+    _cairo_gl_surface_embedded_operand_init (surface);
+}
+
+static cairo_bool_t
+_cairo_gl_surface_size_valid_for_context (cairo_gl_context_t *ctx,
+					  int width, int height)
+{
+    return width > 0 && height > 0 &&
+	width <= ctx->max_framebuffer_size &&
+	height <= ctx->max_framebuffer_size;
+}
+
+static cairo_bool_t
+_cairo_gl_surface_size_valid (cairo_gl_surface_t *surface,
+			      int width, int height)
+{
+    cairo_gl_context_t *ctx = (cairo_gl_context_t *)surface->base.device;
+    return _cairo_gl_surface_size_valid_for_context (ctx, width, height);
+}
+
+static cairo_surface_t *
+_cairo_gl_surface_create_scratch_for_texture (cairo_gl_context_t   *ctx,
+					      cairo_content_t	    content,
+					      GLuint		    tex,
+					      int		    width,
+					      int		    height)
+{
+    cairo_gl_surface_t *surface;
+
+    surface = calloc (1, sizeof (cairo_gl_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface->tex = tex;
+    _cairo_gl_surface_init (&ctx->base, surface, content, width, height);
+
+    surface->supports_msaa = ctx->supports_msaa;
+    surface->num_samples = ctx->num_samples;
+    surface->supports_stencil = TRUE;
+
+    /* Create the texture used to store the surface's data. */
+    _cairo_gl_context_activate (ctx, CAIRO_GL_TEX_TEMP);
+    glBindTexture (ctx->tex_target, surface->tex);
+    glTexParameteri (ctx->tex_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri (ctx->tex_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+    return &surface->base;
+}
+
+static cairo_surface_t *
+_create_scratch_internal (cairo_gl_context_t *ctx,
+			  cairo_content_t content,
+			  int width,
+			  int height,
+			  cairo_bool_t for_caching)
+{
+    cairo_gl_surface_t *surface;
+    GLenum format;
+    GLuint tex;
+
+    glGenTextures (1, &tex);
+    surface = (cairo_gl_surface_t *)
+	_cairo_gl_surface_create_scratch_for_texture (ctx, content,
+						      tex, width, height);
+    if (unlikely (surface->base.status))
+	return &surface->base;
+
+    surface->owns_tex = TRUE;
+
+    /* adjust the texture size after setting our real extents */
+    if (width < 1)
+	width = 1;
+    if (height < 1)
+	height = 1;
+
+    switch (content) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_CONTENT_COLOR_ALPHA:
+	format = GL_RGBA;
+	break;
+    case CAIRO_CONTENT_ALPHA:
+	/* When using GL_ALPHA, compositing doesn't work properly, but for
+	 * caching surfaces, we are just uploading pixel data, so it isn't
+	 * an issue. */
+	if (for_caching)
+	    format = GL_ALPHA;
+	else
+	    format = GL_RGBA;
+	break;
+    case CAIRO_CONTENT_COLOR:
+	/* GL_RGB is almost what we want here -- sampling 1 alpha when
+	 * texturing, using 1 as destination alpha factor in blending,
+	 * etc.  However, when filtering with GL_CLAMP_TO_BORDER, the
+	 * alpha channel of the border color will also be clamped to
+	 * 1, when we actually want the border color we explicitly
+	 * specified.  So, we have to store RGBA, and fill the alpha
+	 * channel with 1 when blending.
+	 */
+	format = GL_RGBA;
+	break;
+    }
+
+    glTexImage2D (ctx->tex_target, 0, format, width, height, 0,
+		  format, GL_UNSIGNED_BYTE, NULL);
+
+    return &surface->base;
+}
+
+cairo_surface_t *
+_cairo_gl_surface_create_scratch (cairo_gl_context_t   *ctx,
+				  cairo_content_t	content,
+				  int			width,
+				  int			height)
+{
+    return _create_scratch_internal (ctx, content, width, height, FALSE);
+}
+
+cairo_surface_t *
+_cairo_gl_surface_create_scratch_for_caching (cairo_gl_context_t *ctx,
+					      cairo_content_t content,
+					      int width,
+					      int height)
+{
+    return _create_scratch_internal (ctx, content, width, height, TRUE);
+}
+
+static cairo_status_t
+_cairo_gl_surface_clear (cairo_gl_surface_t  *surface,
+			 const cairo_color_t *color)
+{
+    cairo_gl_context_t *ctx;
+    cairo_status_t status;
+    double r, g, b, a;
+
+    status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gl_context_set_destination (ctx, surface, surface->msaa_active);
+    if (surface->base.content & CAIRO_CONTENT_COLOR) {
+	r = color->red   * color->alpha;
+	g = color->green * color->alpha;
+	b = color->blue  * color->alpha;
+    } else {
+	r = g = b = 0;
+    }
+    if (surface->base.content & CAIRO_CONTENT_ALPHA) {
+	a = color->alpha;
+    } else {
+	a = 1.0;
+    }
+
+    glDisable (GL_SCISSOR_TEST);
+    glClearColor (r, g, b, a);
+    glClear (GL_COLOR_BUFFER_BIT);
+
+    if (a == 0)
+	surface->base.is_clear = TRUE;
+
+    return _cairo_gl_context_release (ctx, status);
+}
+
+static cairo_surface_t *
+_cairo_gl_surface_create_and_clear_scratch (cairo_gl_context_t *ctx,
+					    cairo_content_t content,
+					    int width,
+					    int height)
+{
+    cairo_gl_surface_t *surface;
+    cairo_int_status_t status;
+
+    surface = (cairo_gl_surface_t *)
+	_cairo_gl_surface_create_scratch (ctx, content, width, height);
+    if (unlikely (surface->base.status))
+	return &surface->base;
+
+    /* Cairo surfaces start out initialized to transparent (black) */
+    status = _cairo_gl_surface_clear (surface, CAIRO_COLOR_TRANSPARENT);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&surface->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return &surface->base;
+}
+
+cairo_surface_t *
+cairo_gl_surface_create (cairo_device_t		*abstract_device,
+			 cairo_content_t	 content,
+			 int			 width,
+			 int			 height)
+{
+    cairo_gl_context_t *ctx;
+    cairo_gl_surface_t *surface;
+    cairo_status_t status;
+
+    if (! CAIRO_CONTENT_VALID (content))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
+
+    if (abstract_device == NULL)
+	return _cairo_image_surface_create_with_content (content, width, height);
+
+    if (abstract_device->status)
+	return _cairo_surface_create_in_error (abstract_device->status);
+
+    if (abstract_device->backend->type != CAIRO_DEVICE_TYPE_GL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+    status = _cairo_gl_context_acquire (abstract_device, &ctx);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (! _cairo_gl_surface_size_valid_for_context (ctx, width, height)) {
+	status = _cairo_gl_context_release (ctx, status);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+    surface = (cairo_gl_surface_t *)
+	_cairo_gl_surface_create_and_clear_scratch (ctx, content, width, height);
+    if (unlikely (surface->base.status)) {
+	status = _cairo_gl_context_release (ctx, surface->base.status);
+	cairo_surface_destroy (&surface->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    status = _cairo_gl_context_release (ctx, status);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&surface->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return &surface->base;
+}
+slim_hidden_def (cairo_gl_surface_create);
+
+/**
+ * cairo_gl_surface_create_for_texture:
+ * @content: type of content in the surface
+ * @tex: name of texture to use for storage of surface pixels
+ * @width: width of the surface, in pixels
+ * @height: height of the surface, in pixels
+ *
+ * Creates a GL surface for the specified texture with the specified
+ * content and dimensions.  The texture must be kept around until the
+ * #cairo_surface_t is destroyed or cairo_surface_finish() is called
+ * on the surface.  The initial contents of @tex will be used as the
+ * initial image contents; you must explicitly clear the buffer,
+ * using, for example, cairo_rectangle() and cairo_fill() if you want
+ * it cleared.  The format of @tex should be compatible with @content,
+ * in the sense that it must have the color components required by
+ * @content.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: TBD
+ **/
+cairo_surface_t *
+cairo_gl_surface_create_for_texture (cairo_device_t	*abstract_device,
+				     cairo_content_t	 content,
+				     unsigned int	 tex,
+				     int		 width,
+				     int		 height)
+{
+    cairo_gl_context_t *ctx;
+    cairo_gl_surface_t *surface;
+    cairo_status_t status;
+
+    if (! CAIRO_CONTENT_VALID (content))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
+
+    if (abstract_device == NULL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NULL_POINTER));
+
+    if (abstract_device->status)
+	return _cairo_surface_create_in_error (abstract_device->status);
+
+    if (abstract_device->backend->type != CAIRO_DEVICE_TYPE_GL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH));
+
+    status = _cairo_gl_context_acquire (abstract_device, &ctx);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (! _cairo_gl_surface_size_valid_for_context (ctx, width, height)) {
+	status = _cairo_gl_context_release (ctx, status);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+    surface = (cairo_gl_surface_t *)
+	_cairo_gl_surface_create_scratch_for_texture (ctx, content,
+						      tex, width, height);
+    status = _cairo_gl_context_release (ctx, status);
+
+    return &surface->base;
+}
+slim_hidden_def (cairo_gl_surface_create_for_texture);
+
+
+void
+cairo_gl_surface_set_size (cairo_surface_t *abstract_surface,
+			   int              width,
+			   int              height)
+{
+    cairo_gl_surface_t *surface = (cairo_gl_surface_t *) abstract_surface;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (! _cairo_surface_is_gl (abstract_surface) ||
+	_cairo_gl_surface_is_texture (surface)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    if (surface->width != width || surface->height != height) {
+	surface->needs_update = TRUE;
+	surface->width = width;
+	surface->height = height;
+    }
+}
+
+int
+cairo_gl_surface_get_width (cairo_surface_t *abstract_surface)
+{
+    cairo_gl_surface_t *surface = (cairo_gl_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_gl (abstract_surface))
+	return 0;
+
+    return surface->width;
+}
+
+int
+cairo_gl_surface_get_height (cairo_surface_t *abstract_surface)
+{
+    cairo_gl_surface_t *surface = (cairo_gl_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_gl (abstract_surface))
+	return 0;
+
+    return surface->height;
+}
+
+void
+cairo_gl_surface_swapbuffers (cairo_surface_t *abstract_surface)
+{
+    cairo_gl_surface_t *surface = (cairo_gl_surface_t *) abstract_surface;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (! _cairo_surface_is_gl (abstract_surface)) {
+	_cairo_surface_set_error (abstract_surface,
+				  CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return;
+    }
+
+    if (! _cairo_gl_surface_is_texture (surface)) {
+	cairo_gl_context_t *ctx;
+	cairo_status_t status;
+
+	status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+	if (unlikely (status))
+	    return;
+
+	/* For swapping on EGL, at least, we need a valid context/target. */
+	_cairo_gl_context_set_destination (ctx, surface, FALSE);
+	/* And in any case we should flush any pending operations. */
+	_cairo_gl_composite_flush (ctx);
+
+	ctx->swap_buffers (ctx, surface);
+
+	status = _cairo_gl_context_release (ctx, status);
+	if (status)
+	    status = _cairo_surface_set_error (abstract_surface, status);
+    }
+}
+
+static cairo_surface_t *
+_cairo_gl_surface_create_similar (void		 *abstract_surface,
+				  cairo_content_t  content,
+				  int		  width,
+				  int		  height)
+{
+    cairo_surface_t *surface = abstract_surface;
+    cairo_gl_context_t *ctx;
+    cairo_status_t status;
+
+    if (! _cairo_gl_surface_size_valid (abstract_surface, width, height))
+	return _cairo_image_surface_create_with_content (content, width, height);
+
+    status = _cairo_gl_context_acquire (surface->device, &ctx);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    surface = _cairo_gl_surface_create_and_clear_scratch (ctx, content, width, height);
+
+    status = _cairo_gl_context_release (ctx, status);
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return surface;
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_fill_alpha_channel (cairo_gl_surface_t *dst,
+				      cairo_gl_context_t *ctx,
+				      int x, int y,
+				      int width, int height)
+{
+    cairo_gl_composite_t setup;
+    cairo_status_t status;
+
+    _cairo_gl_composite_flush (ctx);
+    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
+
+    status = _cairo_gl_composite_init (&setup, CAIRO_OPERATOR_SOURCE,
+				       dst, FALSE);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    _cairo_gl_composite_set_solid_source (&setup, CAIRO_COLOR_BLACK);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    _cairo_gl_context_emit_rect (ctx, x, y, x + width, y + height);
+
+    status = _cairo_gl_context_release (ctx, status);
+
+  CLEANUP:
+    _cairo_gl_composite_fini (&setup);
+
+    _cairo_gl_composite_flush (ctx);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gl_surface_draw_image (cairo_gl_surface_t *dst,
+			      cairo_image_surface_t *src,
+			      int src_x, int src_y,
+			      int width, int height,
+			      int dst_x, int dst_y,
+			      cairo_bool_t force_flush)
+{
+    GLenum internal_format, format, type;
+    cairo_bool_t has_alpha, needs_swap;
+    cairo_image_surface_t *clone = NULL;
+    cairo_gl_context_t *ctx;
+    int cpp;
+    cairo_image_surface_t *rgba_clone = NULL;
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+
+    status = _cairo_gl_context_acquire (dst->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_gl_get_flavor () == CAIRO_GL_FLAVOR_ES3 ||
+	_cairo_gl_get_flavor () == CAIRO_GL_FLAVOR_ES2) {
+	pixman_format_code_t pixman_format;
+	cairo_surface_pattern_t pattern;
+	cairo_bool_t require_conversion = FALSE;
+	pixman_format = _cairo_is_little_endian () ? PIXMAN_a8b8g8r8 : PIXMAN_r8g8b8a8;
+
+	if (src->base.content != CAIRO_CONTENT_ALPHA) {
+	    if (src->pixman_format != pixman_format)
+		require_conversion = TRUE;
+	}
+	else if (dst->base.content != CAIRO_CONTENT_ALPHA) {
+	    require_conversion = TRUE;
+	}
+	else if (src->pixman_format != PIXMAN_a8) {
+	    pixman_format = PIXMAN_a8;
+	    require_conversion = TRUE;
+	}
+
+	if (require_conversion) {
+	    rgba_clone = (cairo_image_surface_t *)
+		_cairo_image_surface_create_with_pixman_format (NULL,
+								pixman_format,
+								src->width,
+								src->height,
+								0);
+	    if (unlikely (rgba_clone->base.status))
+		goto FAIL;
+
+	    _cairo_pattern_init_for_surface (&pattern, &src->base);
+	    status = _cairo_surface_paint (&rgba_clone->base,
+					   CAIRO_OPERATOR_SOURCE,
+					   &pattern.base, NULL);
+	    _cairo_pattern_fini (&pattern.base);
+	    if (unlikely (status))
+		goto FAIL;
+
+	    src = rgba_clone;
+	}
+    }
+
+    if (! _cairo_gl_get_image_format_and_type (ctx->gl_flavor,
+					       src->pixman_format,
+					       &internal_format,
+					       &format,
+					       &type,
+					       &has_alpha,
+					       &needs_swap))
+    {
+	cairo_bool_t is_supported;
+
+	clone = _cairo_image_surface_coerce (src);
+	if (unlikely (status = clone->base.status))
+	    goto FAIL;
+
+	is_supported =
+	    _cairo_gl_get_image_format_and_type (ctx->gl_flavor,
+						 clone->pixman_format,
+						 &internal_format,
+						 &format,
+						 &type,
+						 &has_alpha,
+						 &needs_swap);
+	assert (is_supported);
+	assert (!needs_swap);
+	src = clone;
+    }
+
+    cpp = PIXMAN_FORMAT_BPP (src->pixman_format) / 8;
+
+    if (force_flush) {
+	status = _cairo_gl_surface_flush (&dst->base, 0);
+	if (unlikely (status))
+	    goto FAIL;
+    }
+
+    if (_cairo_gl_surface_is_texture (dst)) {
+	void *data_start = src->data + src_y * src->stride + src_x * cpp;
+	void *data_start_gles2 = NULL;
+
+	/*
+	 * Due to GL_UNPACK_ROW_LENGTH missing in GLES2 we have to extract the
+	 * image data ourselves in some cases. In particular, we must extract
+	 * the pixels if:
+	 * a. we don't want full-length lines or
+	 * b. the row stride cannot be handled by GL itself using a 4 byte
+	 *     alignment constraint
+	 */
+	if (src->stride < 0 ||
+	    (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2 &&
+	     (src->width * cpp < src->stride - 3 ||
+	      width != src->width)))
+	{
+	    glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+	    status = _cairo_gl_surface_extract_image_data (src, src_x, src_y,
+							   width, height,
+							   &data_start_gles2);
+	    if (unlikely (status))
+		goto FAIL;
+
+	    data_start = data_start_gles2;
+	}
+	else
+	{
+	    glPixelStorei (GL_UNPACK_ALIGNMENT, 4);
+	    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+		ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+		glPixelStorei (GL_UNPACK_ROW_LENGTH, src->stride / cpp);
+	}
+
+	/* we must resolve the renderbuffer to texture before we
+	   upload image */
+	status = _cairo_gl_surface_resolve_multisampling (dst);
+	if (unlikely (status)) {
+	    free (data_start_gles2);
+	    goto FAIL;
+	}
+
+	_cairo_gl_context_activate (ctx, CAIRO_GL_TEX_TEMP);
+	glBindTexture (ctx->tex_target, dst->tex);
+	glTexParameteri (ctx->tex_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri (ctx->tex_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexSubImage2D (ctx->tex_target, 0,
+			 dst_x, dst_y, width, height,
+			 format, type, data_start);
+
+	free (data_start_gles2);
+
+	/* If we just treated some rgb-only data as rgba, then we have to
+	 * go back and fix up the alpha channel where we filled in this
+	 * texture data.
+	 */
+	if (!has_alpha) {
+	    _cairo_gl_surface_fill_alpha_channel (dst, ctx,
+						  dst_x, dst_y,
+						  width, height);
+	}
+	if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	    dst->content_in_texture = TRUE;
+    } else {
+	cairo_surface_t *tmp;
+
+	tmp = _cairo_gl_surface_create_scratch (ctx,
+						dst->base.content,
+						width, height);
+	if (unlikely (tmp->status))
+	    goto FAIL;
+
+	status = _cairo_gl_surface_draw_image ((cairo_gl_surface_t *) tmp,
+					       src,
+					       src_x, src_y,
+					       width, height,
+					       0, 0, force_flush);
+	if (status == CAIRO_INT_STATUS_SUCCESS) {
+	    cairo_surface_pattern_t tmp_pattern;
+	    cairo_rectangle_int_t r;
+	    cairo_clip_t *clip;
+
+	    _cairo_pattern_init_for_surface (&tmp_pattern, tmp);
+	    cairo_matrix_init_translate (&tmp_pattern.base.matrix,
+					 -dst_x, -dst_y);
+	    tmp_pattern.base.filter = CAIRO_FILTER_NEAREST;
+	    tmp_pattern.base.extend = CAIRO_EXTEND_NONE;
+
+	    r.x = dst_x;
+	    r.y = dst_y;
+	    r.width = width;
+	    r.height = height;
+	    clip = _cairo_clip_intersect_rectangle (NULL, &r);
+	    status = _cairo_surface_paint (&dst->base,
+					   CAIRO_OPERATOR_SOURCE,
+					   &tmp_pattern.base,
+					   clip);
+	    _cairo_clip_destroy (clip);
+	    _cairo_pattern_fini (&tmp_pattern.base);
+	}
+
+	cairo_surface_destroy (tmp);
+	if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	    dst->content_in_texture = TRUE;
+    }
+
+FAIL:
+    status = _cairo_gl_context_release (ctx, status);
+
+    if (clone)
+	cairo_surface_destroy (&clone->base);
+
+    if (rgba_clone)
+	cairo_surface_destroy (&rgba_clone->base);
+
+    return status;
+}
+
+static int _cairo_gl_surface_flavor (cairo_gl_surface_t *surface)
+{
+    cairo_gl_context_t *ctx = (cairo_gl_context_t *)surface->base.device;
+    return ctx->gl_flavor;
+}
+
+static cairo_status_t
+_cairo_gl_surface_finish (void *abstract_surface)
+{
+    cairo_gl_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+    cairo_gl_context_t *ctx;
+
+    status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    if (ctx->operands[CAIRO_GL_TEX_SOURCE].type == CAIRO_GL_OPERAND_TEXTURE &&
+	ctx->operands[CAIRO_GL_TEX_SOURCE].texture.surface == surface)
+	_cairo_gl_context_destroy_operand (ctx, CAIRO_GL_TEX_SOURCE);
+    if (ctx->operands[CAIRO_GL_TEX_MASK].type == CAIRO_GL_OPERAND_TEXTURE &&
+	ctx->operands[CAIRO_GL_TEX_MASK].texture.surface == surface)
+	_cairo_gl_context_destroy_operand (ctx, CAIRO_GL_TEX_MASK);
+    if (ctx->current_target == surface)
+	ctx->current_target = NULL;
+
+    if (surface->fb)
+	ctx->dispatch.DeleteFramebuffers (1, &surface->fb);
+    if (surface->depth_stencil)
+	ctx->dispatch.DeleteRenderbuffers (1, &surface->depth_stencil);
+    if (surface->owns_tex)
+	glDeleteTextures (1, &surface->tex);
+
+    if (surface->msaa_depth_stencil)
+	ctx->dispatch.DeleteRenderbuffers (1, &surface->msaa_depth_stencil);
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+    if (surface->msaa_fb)
+	ctx->dispatch.DeleteFramebuffers (1, &surface->msaa_fb);
+    if (surface->msaa_rb)
+	ctx->dispatch.DeleteRenderbuffers (1, &surface->msaa_rb);
+#endif
+
+    _cairo_clip_destroy (surface->clip_on_stencil_buffer);
+
+    return _cairo_gl_context_release (ctx, status);
+}
+
+static cairo_image_surface_t *
+_cairo_gl_surface_map_to_image (void      *abstract_surface,
+				const cairo_rectangle_int_t   *extents)
+{
+    cairo_gl_surface_t *surface = abstract_surface;
+    cairo_image_surface_t *image;
+    cairo_gl_context_t *ctx;
+    GLenum format, type;
+    pixman_format_code_t pixman_format;
+    unsigned int cpp;
+    cairo_bool_t flipped, mesa_invert;
+    cairo_status_t status;
+    int y;
+
+    status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+    if (unlikely (status)) {
+	return _cairo_image_surface_create_in_error (status);
+    }
+
+    /* Want to use a switch statement here but the compiler gets whiny. */
+    if (surface->base.content == CAIRO_CONTENT_COLOR_ALPHA) {
+	format = GL_BGRA;
+	pixman_format = PIXMAN_a8r8g8b8;
+	type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	cpp = 4;
+    } else if (surface->base.content == CAIRO_CONTENT_COLOR) {
+	format = GL_BGRA;
+	pixman_format = PIXMAN_x8r8g8b8;
+	type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	cpp = 4;
+    } else if (surface->base.content == CAIRO_CONTENT_ALPHA) {
+	format = GL_ALPHA;
+	pixman_format = PIXMAN_a8;
+	type = GL_UNSIGNED_BYTE;
+	cpp = 1;
+    } else {
+	ASSERT_NOT_REACHED;
+	return NULL;
+    }
+
+    if (_cairo_gl_surface_flavor (surface) == CAIRO_GL_FLAVOR_ES3 ||
+	_cairo_gl_surface_flavor (surface) == CAIRO_GL_FLAVOR_ES2) {
+	/* If only RGBA is supported, we must download data in a compatible
+	 * format. This means that pixman will convert the data on the CPU when
+	 * interacting with other image surfaces. For ALPHA, GLES2 does not
+	 * support GL_PACK_ROW_LENGTH anyway, and this makes sure that the
+	 * pixman image that is created has row_stride = row_width * bpp. */
+	if (surface->base.content == CAIRO_CONTENT_ALPHA || !ctx->can_read_bgra) {
+	    cairo_bool_t little_endian = _cairo_is_little_endian ();
+	    format = GL_RGBA;
+
+	    if (surface->base.content == CAIRO_CONTENT_COLOR) {
+		pixman_format = little_endian ?
+		    PIXMAN_x8b8g8r8 : PIXMAN_r8g8b8x8;
+	    } else {
+		pixman_format = little_endian ?
+		    PIXMAN_a8b8g8r8 : PIXMAN_r8g8b8a8;
+	    }
+	}
+
+	/* GLES2 only supports GL_UNSIGNED_BYTE. */
+	type = GL_UNSIGNED_BYTE;
+	cpp = 4;
+    }
+
+    image = (cairo_image_surface_t*)
+	_cairo_image_surface_create_with_pixman_format (NULL,
+							pixman_format,
+							extents->width,
+							extents->height,
+							-1);
+    if (unlikely (image->base.status)) {
+	status = _cairo_gl_context_release (ctx, status);
+	return image;
+    }
+
+    cairo_surface_set_device_offset (&image->base, -extents->x, -extents->y);
+
+    /* If the original surface has not been modified or
+     * is clear, we can avoid downloading data. */
+    if (surface->base.is_clear || surface->base.serial == 0) {
+	status = _cairo_gl_context_release (ctx, status);
+	return image;
+    }
+
+    /* This is inefficient, as we'd rather just read the thing without making
+     * it the destination.  But then, this is the fallback path, so let's not
+     * fall back instead.
+     */
+    _cairo_gl_composite_flush (ctx);
+
+    if (ctx->gl_flavor != CAIRO_GL_FLAVOR_ES3) {
+	_cairo_gl_context_set_destination (ctx, surface, FALSE);
+    } else {
+	if (surface->content_in_texture) {
+	    _cairo_gl_ensure_framebuffer (ctx, surface);
+	    ctx->dispatch.BindFramebuffer (GL_FRAMEBUFFER, surface->fb);
+	} else {
+	    status = _cairo_gl_surface_resolve_multisampling (surface);
+	    if (unlikely (status)) {
+		status = _cairo_gl_context_release (ctx, status);
+		cairo_surface_destroy (&image->base);
+		return _cairo_image_surface_create_in_error (status);
+	    }
+	}
+    }
+
+    flipped = ! _cairo_gl_surface_is_texture (surface);
+    mesa_invert = flipped && ctx->has_mesa_pack_invert;
+
+    glPixelStorei (GL_PACK_ALIGNMENT, 4);
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_DESKTOP ||
+	ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	glPixelStorei (GL_PACK_ROW_LENGTH, image->stride / cpp);
+    if (mesa_invert)
+	glPixelStorei (GL_PACK_INVERT_MESA, 1);
+
+    y = extents->y;
+    if (flipped)
+	y = surface->height - extents->y - extents->height;
+
+    glReadPixels (extents->x, y,
+		  extents->width, extents->height,
+		  format, type, image->data);
+    if (mesa_invert)
+	glPixelStorei (GL_PACK_INVERT_MESA, 0);
+
+    status = _cairo_gl_context_release (ctx, status);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&image->base);
+	return _cairo_image_surface_create_in_error (status);
+    }
+
+    /* We must invert the image manualy if we lack GL_MESA_pack_invert */
+    if (flipped && ! mesa_invert) {
+	uint8_t stack[1024], *row = stack;
+	uint8_t *top = image->data;
+	uint8_t *bot = image->data + (image->height-1)*image->stride;
+
+	if (image->stride > (int)sizeof(stack)) {
+	    row = _cairo_malloc (image->stride);
+	    if (unlikely (row == NULL)) {
+		cairo_surface_destroy (&image->base);
+		return _cairo_image_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	    }
+	}
+
+	while (top < bot) {
+	    memcpy (row, top, image->stride);
+	    memcpy (top, bot, image->stride);
+	    memcpy (bot, row, image->stride);
+	    top += image->stride;
+	    bot -= image->stride;
+	}
+
+	if (row != stack)
+	    free(row);
+    }
+
+    image->base.is_clear = FALSE;
+    return image;
+}
+
+static cairo_surface_t *
+_cairo_gl_surface_source (void		       *abstract_surface,
+			  cairo_rectangle_int_t *extents)
+{
+    cairo_gl_surface_t *surface = abstract_surface;
+
+    if (extents) {
+	extents->x = extents->y = 0;
+	extents->width  = surface->width;
+	extents->height = surface->height;
+    }
+
+    return &surface->base;
+}
+
+static cairo_status_t
+_cairo_gl_surface_acquire_source_image (void		       *abstract_surface,
+					cairo_image_surface_t **image_out,
+					void		      **image_extra)
+{
+    cairo_gl_surface_t *surface = abstract_surface;
+    cairo_rectangle_int_t extents;
+
+    *image_extra = NULL;
+
+    extents.x = extents.y = 0;
+    extents.width = surface->width;
+    extents.height = surface->height;
+
+    *image_out = (cairo_image_surface_t *)
+	_cairo_gl_surface_map_to_image (surface, &extents);
+    return (*image_out)->base.status;
+}
+
+static void
+_cairo_gl_surface_release_source_image (void		      *abstract_surface,
+					cairo_image_surface_t *image,
+					void		      *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_unmap_image (void		      *abstract_surface,
+			       cairo_image_surface_t *image)
+{
+    cairo_int_status_t status;
+
+    status = _cairo_gl_surface_draw_image (abstract_surface, image,
+					   0, 0,
+					   image->width, image->height,
+					   image->base.device_transform_inverse.x0,
+					   image->base.device_transform_inverse.y0,
+					   TRUE);
+
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return status;
+}
+
+static cairo_bool_t
+_cairo_gl_surface_get_extents (void		     *abstract_surface,
+			       cairo_rectangle_int_t *rectangle)
+{
+    cairo_gl_surface_t *surface = abstract_surface;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+    rectangle->width  = surface->width;
+    rectangle->height = surface->height;
+
+    return TRUE;
+}
+
+static cairo_status_t
+_cairo_gl_surface_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_gl_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+    cairo_gl_context_t *ctx;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+    if ((ctx->operands[CAIRO_GL_TEX_SOURCE].type == CAIRO_GL_OPERAND_TEXTURE &&
+	 ctx->operands[CAIRO_GL_TEX_SOURCE].texture.surface == surface) ||
+	(ctx->operands[CAIRO_GL_TEX_MASK].type == CAIRO_GL_OPERAND_TEXTURE &&
+	 ctx->operands[CAIRO_GL_TEX_MASK].texture.surface == surface) ||
+	(ctx->current_target == surface))
+      _cairo_gl_composite_flush (ctx);
+
+    status = _cairo_gl_surface_resolve_multisampling (surface);
+
+    return _cairo_gl_context_release (ctx, status);
+}
+
+cairo_int_status_t
+_cairo_gl_surface_resolve_multisampling (cairo_gl_surface_t *surface)
+{
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    if (! surface->msaa_active)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    if (surface->base.device == NULL)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    /* GLES surfaces do not need explicit resolution. */
+    if (((cairo_gl_context_t *) surface->base.device)->gl_flavor == CAIRO_GL_FLAVOR_ES2)
+	return CAIRO_INT_STATUS_SUCCESS;
+    else if (((cairo_gl_context_t *) surface->base.device)->gl_flavor == CAIRO_GL_FLAVOR_ES3 &&
+	     surface->content_in_texture)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    if (! _cairo_gl_surface_is_texture (surface))
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    status = _cairo_gl_context_acquire (surface->base.device, &ctx);
+    if (unlikely (status))
+	return status;
+
+#if CAIRO_HAS_GLESV3_SURFACE
+    _cairo_gl_composite_flush (ctx);
+    ctx->current_target = NULL;
+    _cairo_gl_context_bind_framebuffer (ctx, surface, FALSE);
+    if (ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3)
+	surface->content_in_texture = TRUE;
+
+#elif CAIRO_HAS_GL_SURFACE
+    ctx->current_target = surface;
+    _cairo_gl_context_bind_framebuffer (ctx, surface, FALSE);
+
+#else
+    ctx->current_target = surface;
+
+#endif
+
+    status = _cairo_gl_context_release (ctx, status);
+    return status;
+}
+
+static const cairo_compositor_t *
+get_compositor (cairo_gl_surface_t *surface)
+{
+    cairo_gl_context_t *ctx = (cairo_gl_context_t *)surface->base.device;
+    return ctx->compositor;
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_paint (void			*surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_clip_t	*clip)
+{
+    /* simplify the common case of clearing the surface */
+    if (clip == NULL) {
+	if (op == CAIRO_OPERATOR_CLEAR)
+	    return _cairo_gl_surface_clear (surface, CAIRO_COLOR_TRANSPARENT);
+       else if (source->type == CAIRO_PATTERN_TYPE_SOLID &&
+		(op == CAIRO_OPERATOR_SOURCE ||
+		 (op == CAIRO_OPERATOR_OVER && _cairo_pattern_is_opaque_solid (source)))) {
+	    return _cairo_gl_surface_clear (surface,
+					    &((cairo_solid_pattern_t *) source)->color);
+	}
+    }
+
+    return _cairo_compositor_paint (get_compositor (surface), surface,
+				    op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_mask (void			 *surface,
+			cairo_operator_t	  op,
+			const cairo_pattern_t	*source,
+			const cairo_pattern_t	*mask,
+			const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_mask (get_compositor (surface), surface,
+				   op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_stroke (void				*surface,
+			  cairo_operator_t		 op,
+			  const cairo_pattern_t		*source,
+			  const cairo_path_fixed_t	*path,
+			  const cairo_stroke_style_t	*style,
+			  const cairo_matrix_t		*ctm,
+			  const cairo_matrix_t		*ctm_inverse,
+			  double			 tolerance,
+			  cairo_antialias_t		 antialias,
+			  const cairo_clip_t		*clip)
+{
+    return _cairo_compositor_stroke (get_compositor (surface), surface,
+				     op, source, path, style,
+				     ctm, ctm_inverse, tolerance, antialias,
+				     clip);
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_fill (void			*surface,
+			cairo_operator_t	 op,
+			const cairo_pattern_t	*source,
+			const cairo_path_fixed_t*path,
+			cairo_fill_rule_t	 fill_rule,
+			double			 tolerance,
+			cairo_antialias_t	 antialias,
+			const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_fill (get_compositor (surface), surface,
+				   op, source, path,
+				   fill_rule, tolerance, antialias,
+				   clip);
+}
+
+static cairo_int_status_t
+_cairo_gl_surface_glyphs (void			*surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  cairo_glyph_t		*glyphs,
+			  int			 num_glyphs,
+			  cairo_scaled_font_t	*font,
+			  const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_glyphs (get_compositor (surface), surface,
+				     op, source, glyphs, num_glyphs, font,
+				     clip);
+}
+
+static const cairo_surface_backend_t _cairo_gl_surface_backend = {
+    CAIRO_SURFACE_TYPE_GL,
+    _cairo_gl_surface_finish,
+    _cairo_default_context_create,
+
+    _cairo_gl_surface_create_similar,
+    NULL, /* similar image */
+    _cairo_gl_surface_map_to_image,
+    _cairo_gl_surface_unmap_image,
+
+    _cairo_gl_surface_source,
+    _cairo_gl_surface_acquire_source_image,
+    _cairo_gl_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_gl_surface_get_extents,
+    _cairo_image_surface_get_font_options,
+
+    _cairo_gl_surface_flush,
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_gl_surface_paint,
+    _cairo_gl_surface_mask,
+    _cairo_gl_surface_stroke,
+    _cairo_gl_surface_fill,
+    NULL, /* fill/stroke */
+    _cairo_gl_surface_glyphs,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-gl-traps-compositor.c b/libs/cairo-1.16.0/src/cairo-gl-traps-compositor.c
new file mode 100644
index 0000000..7938c5b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl-traps-compositor.c
@@ -0,0 +1,531 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005,2010 Red Hat, Inc
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Benjamin Otte <otte@gnome.org>
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Eric Anholt <eric@anholt.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-spans-compositor-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-offset-private.h"
+
+static cairo_int_status_t
+acquire (void *abstract_dst)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+release (void *abstract_dst)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+set_clip_region (void *_surface,
+		 cairo_region_t *region)
+{
+    cairo_gl_surface_t *surface = _surface;
+
+    surface->clip_region = region;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+draw_image_boxes (void *_dst,
+		  cairo_image_surface_t *image,
+		  cairo_boxes_t *boxes,
+		  int dx, int dy)
+{
+    cairo_gl_surface_t *dst = _dst;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    cairo_box_t *b = &chunk->base[i];
+	    int x = _cairo_fixed_integer_part (b->p1.x);
+	    int y = _cairo_fixed_integer_part (b->p1.y);
+	    int w = _cairo_fixed_integer_part (b->p2.x) - x;
+	    int h = _cairo_fixed_integer_part (b->p2.y) - y;
+	    cairo_status_t status;
+
+	    status = _cairo_gl_surface_draw_image (dst, image,
+						   x + dx, y + dy,
+						   w, h,
+						   x, y,
+						   TRUE);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+emit_aligned_boxes (cairo_gl_context_t *ctx,
+		    const cairo_boxes_t *boxes)
+{
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_gl_emit_rect_t emit = _cairo_gl_context_choose_emit_rect (ctx);
+    int i;
+
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+	    int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+	    int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+	    int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+	    emit (ctx, x1, y1, x2, y2);
+	}
+    }
+}
+
+static cairo_int_status_t
+fill_boxes (void		*_dst,
+	    cairo_operator_t	 op,
+	    const cairo_color_t	*color,
+	    cairo_boxes_t	*boxes)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+   _cairo_gl_composite_set_solid_source (&setup, color);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    emit_aligned_boxes (ctx, boxes);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_int_status_t
+composite_boxes (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 cairo_surface_t	*abstract_mask,
+		 int			src_x,
+		 int			src_y,
+		 int			mask_x,
+		 int			mask_y,
+		 int			dst_x,
+		 int			dst_y,
+		 cairo_boxes_t		*boxes,
+		 const cairo_rectangle_int_t  *extents)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_source_operand (&setup,
+					    source_to_operand (abstract_src));
+    _cairo_gl_operand_translate (&setup.src, dst_x-src_x, dst_y-src_y);
+
+    _cairo_gl_composite_set_mask_operand (&setup,
+					  source_to_operand (abstract_mask));
+    _cairo_gl_operand_translate (&setup.mask, dst_x-mask_x, dst_y-mask_y);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    emit_aligned_boxes (ctx, boxes);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_int_status_t
+composite (void			*_dst,
+	   cairo_operator_t	op,
+	   cairo_surface_t	*abstract_src,
+	   cairo_surface_t	*abstract_mask,
+	   int			src_x,
+	   int			src_y,
+	   int			mask_x,
+	   int			mask_y,
+	   int			dst_x,
+	   int			dst_y,
+	   unsigned int		width,
+	   unsigned int		height)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_source_operand (&setup,
+					    source_to_operand (abstract_src));
+    _cairo_gl_operand_translate (&setup.src, dst_x-src_x, dst_y-src_y);
+
+    _cairo_gl_composite_set_mask_operand (&setup,
+					  source_to_operand (abstract_mask));
+    _cairo_gl_operand_translate (&setup.mask, dst_x-mask_x, dst_y-mask_y);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    /* XXX clip */
+    _cairo_gl_context_emit_rect (ctx, dst_x, dst_y, dst_x+width, dst_y+height);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_int_status_t
+lerp (void			*dst,
+      cairo_surface_t		*src,
+      cairo_surface_t		*mask,
+      int			src_x,
+      int			src_y,
+      int			mask_x,
+      int			mask_y,
+      int			dst_x,
+      int			dst_y,
+      unsigned int		width,
+      unsigned int		height)
+{
+    cairo_int_status_t status;
+
+    /* we could avoid some repetition... */
+    status = composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			mask_x, mask_y,
+			0, 0,
+			dst_x, dst_y,
+			width, height);
+    if (unlikely (status))
+	return status;
+
+    status = composite (dst, CAIRO_OPERATOR_ADD, src, mask,
+			src_x, src_y,
+			mask_x, mask_y,
+			dst_x, dst_y,
+			width, height);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+traps_to_operand (void *_dst,
+		  const cairo_rectangle_int_t *extents,
+		  cairo_antialias_t	antialias,
+		  cairo_traps_t		*traps,
+		  cairo_gl_operand_t	*operand,
+		  int dst_x, int dst_y)
+{
+    pixman_format_code_t pixman_format;
+    pixman_image_t *pixman_image;
+    cairo_surface_t *image, *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_status_t status;
+
+    pixman_format = antialias != CAIRO_ANTIALIAS_NONE ? PIXMAN_a8 : PIXMAN_a1;
+    pixman_image = pixman_image_create_bits (pixman_format,
+					     extents->width,
+					     extents->height,
+					     NULL, 0);
+    if (unlikely (pixman_image == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _pixman_image_add_traps (pixman_image, extents->x, extents->y, traps);
+    image = _cairo_image_surface_create_for_pixman_image (pixman_image,
+							  pixman_format);
+    if (unlikely (image->status)) {
+	pixman_image_unref (pixman_image);
+	return image->status;
+    }
+
+    mask = _cairo_surface_create_scratch (_dst,
+					  CAIRO_CONTENT_COLOR_ALPHA,
+					  extents->width,
+					  extents->height,
+					  NULL);
+    if (unlikely (mask->status)) {
+	cairo_surface_destroy (image);
+	return mask->status;
+    }
+
+    status = _cairo_gl_surface_draw_image ((cairo_gl_surface_t *)mask,
+					   (cairo_image_surface_t *)image,
+					   0, 0,
+					   extents->width, extents->height,
+					   0, 0,
+					   TRUE);
+    cairo_surface_destroy (image);
+
+    if (unlikely (status))
+	goto error;
+
+    _cairo_pattern_init_for_surface (&pattern, mask);
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 -extents->x+dst_x, -extents->y+dst_y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    pattern.base.extend = CAIRO_EXTEND_NONE;
+    status = _cairo_gl_operand_init (operand, &pattern.base, _dst,
+				     &_cairo_unbounded_rectangle,
+				     &_cairo_unbounded_rectangle,
+				     FALSE);
+    _cairo_pattern_fini (&pattern.base);
+
+    if (unlikely (status))
+	goto error;
+
+    operand->texture.owns_surface = (cairo_gl_surface_t *)mask;
+    return CAIRO_STATUS_SUCCESS;
+
+error:
+    cairo_surface_destroy (mask);
+    return status;
+}
+
+static cairo_int_status_t
+composite_traps (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 int			src_x,
+		 int			src_y,
+		 int			dst_x,
+		 int			dst_y,
+		 const cairo_rectangle_int_t *extents,
+		 cairo_antialias_t	antialias,
+		 cairo_traps_t		*traps)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_int_status_t status;
+
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_source_operand (&setup,
+					    source_to_operand (abstract_src));
+    _cairo_gl_operand_translate (&setup.src, -src_x-dst_x, -src_y-dst_y);
+    status = traps_to_operand (_dst, extents, antialias, traps, &setup.mask, dst_x, dst_y);
+    if (unlikely (status))
+	goto FAIL;
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    /* XXX clip */
+    _cairo_gl_context_emit_rect (ctx,
+				 extents->x-dst_x, extents->y-dst_y,
+				 extents->x-dst_x+extents->width,
+				 extents->y-dst_y+extents->height);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    return status;
+}
+
+static cairo_gl_surface_t *
+tristrip_to_surface (void *_dst,
+		  const cairo_rectangle_int_t *extents,
+		  cairo_antialias_t	antialias,
+		  cairo_tristrip_t	*strip)
+{
+    pixman_format_code_t pixman_format;
+    pixman_image_t *pixman_image;
+    cairo_surface_t *image, *mask;
+    cairo_status_t status;
+
+    pixman_format = antialias != CAIRO_ANTIALIAS_NONE ? PIXMAN_a8 : PIXMAN_a1,
+    pixman_image = pixman_image_create_bits (pixman_format,
+					     extents->width,
+					     extents->height,
+					     NULL, 0);
+    if (unlikely (pixman_image == NULL))
+	return (cairo_gl_surface_t *)_cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _pixman_image_add_tristrip (pixman_image, extents->x, extents->y, strip);
+    image = _cairo_image_surface_create_for_pixman_image (pixman_image,
+							  pixman_format);
+    if (unlikely (image->status)) {
+	pixman_image_unref (pixman_image);
+	return (cairo_gl_surface_t *)image;
+    }
+
+    mask = _cairo_surface_create_scratch (_dst,
+					  CAIRO_CONTENT_COLOR_ALPHA,
+					  extents->width,
+					  extents->height,
+					  NULL);
+    if (unlikely (mask->status)) {
+	cairo_surface_destroy (image);
+	return (cairo_gl_surface_t *)mask;
+    }
+
+    status = _cairo_gl_surface_draw_image ((cairo_gl_surface_t *)mask,
+					   (cairo_image_surface_t *)image,
+					   0, 0,
+					   extents->width, extents->height,
+					   0, 0,
+					   TRUE);
+    cairo_surface_destroy (image);
+    if (unlikely (status)) {
+	cairo_surface_destroy (mask);
+	return (cairo_gl_surface_t*)_cairo_surface_create_in_error (status);
+    }
+
+    return (cairo_gl_surface_t*)mask;
+}
+
+static cairo_int_status_t
+composite_tristrip (void		*_dst,
+		    cairo_operator_t	op,
+		    cairo_surface_t	*abstract_src,
+		    int			src_x,
+		    int			src_y,
+		    int			dst_x,
+		    int			dst_y,
+		    const cairo_rectangle_int_t *extents,
+		    cairo_antialias_t	antialias,
+		    cairo_tristrip_t	*strip)
+{
+    cairo_gl_composite_t setup;
+    cairo_gl_context_t *ctx;
+    cairo_gl_surface_t *mask;
+    cairo_int_status_t status;
+
+    mask = tristrip_to_surface (_dst, extents, antialias, strip);
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    status = _cairo_gl_composite_init (&setup, op, _dst, FALSE);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_gl_composite_set_source_operand (&setup,
+					    source_to_operand (abstract_src));
+
+    //_cairo_gl_composite_set_mask_surface (&setup, mask, 0, 0);
+
+    status = _cairo_gl_composite_begin (&setup, &ctx);
+    if (unlikely (status))
+	goto FAIL;
+
+    /* XXX clip */
+    _cairo_gl_context_emit_rect (ctx,
+				 dst_x, dst_y,
+				 dst_x+extents->width,
+				 dst_y+extents->height);
+    status = _cairo_gl_context_release (ctx, CAIRO_STATUS_SUCCESS);
+
+FAIL:
+    _cairo_gl_composite_fini (&setup);
+    cairo_surface_destroy (&mask->base);
+    return status;
+}
+
+static cairo_int_status_t
+check_composite (const cairo_composite_rectangles_t *extents)
+{
+    if (! _cairo_gl_operator_is_supported (extents->op))
+	return UNSUPPORTED ("unsupported operator");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+const cairo_compositor_t *
+_cairo_gl_traps_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_traps_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_traps_compositor_init (&compositor, &_cairo_fallback_compositor);
+	compositor.acquire = acquire;
+	compositor.release = release;
+	compositor.set_clip_region = set_clip_region;
+	compositor.pattern_to_surface = _cairo_gl_pattern_to_source;
+	compositor.draw_image_boxes = draw_image_boxes;
+	//compositor.copy_boxes = copy_boxes;
+	compositor.fill_boxes = fill_boxes;
+	compositor.check_composite = check_composite;
+	compositor.composite = composite;
+	compositor.lerp = lerp;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	//compositor.check_composite_traps = check_composite_traps;
+	compositor.composite_traps = composite_traps;
+	//compositor.check_composite_tristrip = check_composite_traps;
+	compositor.composite_tristrip = composite_tristrip;
+	compositor.check_composite_glyphs = _cairo_gl_check_composite_glyphs;
+	compositor.composite_glyphs = _cairo_gl_composite_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gl.h b/libs/cairo-1.16.0/src/cairo-gl.h
new file mode 100644
index 0000000..7cd869c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gl.h
@@ -0,0 +1,155 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Eric Anholt.
+ */
+
+/*
+ * cairo-gl.h:
+ *
+ * The cairo-gl backend provides an implementation of possibly
+ * hardware-accelerated cairo rendering by targeting the OpenGL API.
+ * The goal of the cairo-gl backend is to provide better performance
+ * with equal functionality to cairo-image where possible.  It does
+ * not directly provide for applying additional OpenGL effects to
+ * cairo surfaces.
+ *
+ * Cairo-gl allows interoperability with other GL rendering through GL
+ * context sharing.  Cairo-gl surfaces are created in reference to a
+ * #cairo_device_t, which represents a GL context created by the user.
+ * When that GL context is created with its sharePtr set to another
+ * context (or vice versa), its objects (textures backing cairo-gl
+ * surfaces) can be accessed in the other OpenGL context.  This allows
+ * cairo-gl to maintain its drawing state in one context while the
+ * user's 3D rendering occurs in the user's other context.
+ *
+ * However, as only one context can be current to a thread at a time,
+ * cairo-gl may make its context current to the thread on any cairo
+ * call which interacts with a cairo-gl surface or the cairo-gl
+ * device.  As a result, the user must make their own context current
+ * between any cairo calls and their own OpenGL rendering.
+ **/
+
+#ifndef CAIRO_GL_H
+#define CAIRO_GL_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_GL_SURFACE || CAIRO_HAS_GLESV2_SURFACE || CAIRO_HAS_GLESV3_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_gl_surface_create (cairo_device_t *device,
+			 cairo_content_t content,
+			 int width, int height);
+
+cairo_public cairo_surface_t *
+cairo_gl_surface_create_for_texture (cairo_device_t *abstract_device,
+				     cairo_content_t content,
+				     unsigned int tex,
+                                     int width, int height);
+cairo_public void
+cairo_gl_surface_set_size (cairo_surface_t *surface, int width, int height);
+
+cairo_public int
+cairo_gl_surface_get_width (cairo_surface_t *abstract_surface);
+
+cairo_public int
+cairo_gl_surface_get_height (cairo_surface_t *abstract_surface);
+
+cairo_public void
+cairo_gl_surface_swapbuffers (cairo_surface_t *surface);
+
+cairo_public void
+cairo_gl_device_set_thread_aware (cairo_device_t	*device,
+				  cairo_bool_t		 thread_aware);
+
+#if CAIRO_HAS_GLX_FUNCTIONS
+#include <GL/glx.h>
+
+cairo_public cairo_device_t *
+cairo_glx_device_create (Display *dpy, GLXContext gl_ctx);
+
+cairo_public Display *
+cairo_glx_device_get_display (cairo_device_t *device);
+
+cairo_public GLXContext
+cairo_glx_device_get_context (cairo_device_t *device);
+
+cairo_public cairo_surface_t *
+cairo_gl_surface_create_for_window (cairo_device_t *device,
+				    Window win,
+				    int width, int height);
+#endif
+
+#if CAIRO_HAS_WGL_FUNCTIONS
+#include <windows.h>
+
+cairo_public cairo_device_t *
+cairo_wgl_device_create (HGLRC rc);
+
+cairo_public HGLRC
+cairo_wgl_device_get_context (cairo_device_t *device);
+
+cairo_public cairo_surface_t *
+cairo_gl_surface_create_for_dc (cairo_device_t		*device,
+				HDC			 dc,
+				int			 width,
+				int			 height);
+#endif
+
+#if CAIRO_HAS_EGL_FUNCTIONS
+#include <EGL/egl.h>
+
+cairo_public cairo_device_t *
+cairo_egl_device_create (EGLDisplay dpy, EGLContext egl);
+
+cairo_public cairo_surface_t *
+cairo_gl_surface_create_for_egl (cairo_device_t	*device,
+				 EGLSurface	 egl,
+				 int		 width,
+				 int		 height);
+
+cairo_public EGLDisplay
+cairo_egl_device_get_display (cairo_device_t *device);
+
+cairo_public EGLSurface
+cairo_egl_device_get_context (cairo_device_t *device);
+
+#endif
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_GL_SURFACE */
+# error Cairo was not compiled with support for the GL backend
+#endif /* CAIRO_HAS_GL_SURFACE */
+
+#endif /* CAIRO_GL_H */
diff --git a/libs/cairo-1.16.0/src/cairo-glx-context.c b/libs/cairo-1.16.0/src/cairo-glx-context.c
new file mode 100644
index 0000000..66f5a0d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-glx-context.c
@@ -0,0 +1,324 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-error-private.h"
+
+#include <X11/Xutil.h>
+
+/* XXX needs hooking into XCloseDisplay() */
+
+typedef struct _cairo_glx_context {
+    cairo_gl_context_t base;
+
+    Display *display;
+    Window dummy_window;
+    GLXContext context;
+
+    GLXDrawable previous_drawable;
+    GLXContext previous_context;
+
+    cairo_bool_t has_multithread_makecurrent;
+} cairo_glx_context_t;
+
+typedef struct _cairo_glx_surface {
+    cairo_gl_surface_t base;
+
+    Window win;
+} cairo_glx_surface_t;
+
+static cairo_bool_t
+_context_acquisition_changed_glx_state (cairo_glx_context_t *ctx,
+					GLXDrawable current_drawable)
+{
+    return ctx->previous_drawable != current_drawable ||
+	   ctx->previous_context != ctx->context;
+}
+
+static GLXDrawable
+_glx_get_current_drawable (cairo_glx_context_t *ctx)
+{
+    if (ctx->base.current_target == NULL ||
+	_cairo_gl_surface_is_texture (ctx->base.current_target)) {
+	return ctx->dummy_window;
+    }
+
+    return ((cairo_glx_surface_t *) ctx->base.current_target)->win;
+}
+
+static void
+_glx_query_current_state (cairo_glx_context_t * ctx)
+{
+    ctx->previous_drawable = glXGetCurrentDrawable ();
+    ctx->previous_context = glXGetCurrentContext ();
+
+    /* If any of the values were none, assume they are all none. Not all
+       drivers seem well behaved when it comes to using these values across
+       multiple threads. */
+    if (ctx->previous_drawable == None ||
+	ctx->previous_context == None) {
+	ctx->previous_drawable = None;
+	ctx->previous_context = None;
+    }
+}
+
+static void
+_glx_acquire (void *abstract_ctx)
+{
+    cairo_glx_context_t *ctx = abstract_ctx;
+    GLXDrawable current_drawable = _glx_get_current_drawable (ctx);
+
+    _glx_query_current_state (ctx);
+    if (!_context_acquisition_changed_glx_state (ctx, current_drawable))
+	return;
+
+    glXMakeCurrent (ctx->display, current_drawable, ctx->context);
+}
+
+static void
+_glx_make_current (void *abstract_ctx, cairo_gl_surface_t *abstract_surface)
+{
+    cairo_glx_context_t *ctx = abstract_ctx;
+    cairo_glx_surface_t *surface = (cairo_glx_surface_t *) abstract_surface;
+
+    /* Set the window as the target of our context. */
+    glXMakeCurrent (ctx->display, surface->win, ctx->context);
+}
+
+static void
+_glx_release (void *abstract_ctx)
+{
+    cairo_glx_context_t *ctx = abstract_ctx;
+
+    if (ctx->has_multithread_makecurrent || !ctx->base.thread_aware ||
+	!_context_acquisition_changed_glx_state (ctx,
+						_glx_get_current_drawable (ctx))) {
+	return;
+    }
+
+    glXMakeCurrent (ctx->display, None, None);
+}
+
+static void
+_glx_swap_buffers (void *abstract_ctx,
+		   cairo_gl_surface_t *abstract_surface)
+{
+    cairo_glx_context_t *ctx = abstract_ctx;
+    cairo_glx_surface_t *surface = (cairo_glx_surface_t *) abstract_surface;
+
+    glXSwapBuffers (ctx->display, surface->win);
+}
+
+static void
+_glx_destroy (void *abstract_ctx)
+{
+    cairo_glx_context_t *ctx = abstract_ctx;
+
+    if (ctx->dummy_window != None)
+	XDestroyWindow (ctx->display, ctx->dummy_window);
+
+    glXMakeCurrent (ctx->display, None, None);
+}
+
+static cairo_status_t
+_glx_dummy_window (Display *dpy, GLXContext gl_ctx, Window *dummy)
+{
+    int attr[3] = { GLX_FBCONFIG_ID, 0, None };
+    GLXFBConfig *config;
+    XVisualInfo *vi;
+    Colormap cmap;
+    XSetWindowAttributes swa;
+    Window win = None;
+    int cnt;
+
+    /* Create a dummy window created for the target GLX context that we can
+     * use to query the available GL/GLX extensions.
+     */
+    glXQueryContext (dpy, gl_ctx, GLX_FBCONFIG_ID, &attr[1]);
+
+    cnt = 0;
+    config = glXChooseFBConfig (dpy, DefaultScreen (dpy), attr, &cnt);
+    if (unlikely (cnt == 0))
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+
+    vi = glXGetVisualFromFBConfig (dpy, config[0]);
+    XFree (config);
+
+    if (unlikely (vi == NULL))
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+
+    cmap = XCreateColormap (dpy,
+			    RootWindow (dpy, vi->screen),
+			    vi->visual,
+			    AllocNone);
+    swa.colormap = cmap;
+    swa.border_pixel = 0;
+    win = XCreateWindow (dpy, RootWindow (dpy, vi->screen),
+			 -1, -1, 1, 1, 0,
+			 vi->depth,
+			 InputOutput,
+			 vi->visual,
+			 CWBorderPixel | CWColormap, &swa);
+    XFreeColormap (dpy, cmap);
+    XFree (vi);
+
+    XFlush (dpy);
+    if (unlikely (! glXMakeCurrent (dpy, win, gl_ctx))) {
+	XDestroyWindow (dpy, win);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    *dummy = win;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_device_t *
+cairo_glx_device_create (Display *dpy, GLXContext gl_ctx)
+{
+    cairo_glx_context_t *ctx;
+    cairo_status_t status;
+    Window dummy = None;
+    const char *glx_extensions;
+
+    ctx = calloc (1, sizeof (cairo_glx_context_t));
+    if (unlikely (ctx == NULL))
+	return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* glx_dummy_window will call glXMakeCurrent, so we need to
+     *  query the current state of the context now. */
+    _glx_query_current_state (ctx);
+
+    status = _glx_dummy_window (dpy, gl_ctx, &dummy);
+    if (unlikely (status)) {
+	free (ctx);
+	return _cairo_gl_context_create_in_error (status);
+    }
+
+    ctx->display = dpy;
+    ctx->dummy_window = dummy;
+    ctx->context = gl_ctx;
+
+    ctx->base.acquire = _glx_acquire;
+    ctx->base.release = _glx_release;
+    ctx->base.make_current = _glx_make_current;
+    ctx->base.swap_buffers = _glx_swap_buffers;
+    ctx->base.destroy = _glx_destroy;
+
+    status = _cairo_gl_dispatch_init (&ctx->base.dispatch,
+				      (cairo_gl_get_proc_addr_func_t) glXGetProcAddress);
+    if (unlikely (status)) {
+	free (ctx);
+	return _cairo_gl_context_create_in_error (status);
+    }
+
+    status = _cairo_gl_context_init (&ctx->base);
+    if (unlikely (status)) {
+	free (ctx);
+	return _cairo_gl_context_create_in_error (status);
+    }
+
+    glx_extensions = glXQueryExtensionsString (dpy, DefaultScreen (dpy));
+    if (strstr(glx_extensions, "GLX_MESA_multithread_makecurrent")) {
+	ctx->has_multithread_makecurrent = TRUE;
+    }
+
+    ctx->base.release (ctx);
+
+    return &ctx->base.base;
+}
+
+Display *
+cairo_glx_device_get_display (cairo_device_t *device)
+{
+    cairo_glx_context_t *ctx;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL) {
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    ctx = (cairo_glx_context_t *) device;
+
+    return ctx->display;
+}
+
+GLXContext
+cairo_glx_device_get_context (cairo_device_t *device)
+{
+    cairo_glx_context_t *ctx;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL) {
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    ctx = (cairo_glx_context_t *) device;
+
+    return ctx->context;
+}
+
+cairo_surface_t *
+cairo_gl_surface_create_for_window (cairo_device_t	*device,
+				    Window		 win,
+				    int			 width,
+				    int			 height)
+{
+    cairo_glx_surface_t *surface;
+
+    if (unlikely (device->status))
+	return _cairo_surface_create_in_error (device->status);
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+    if (width <= 0 || height <= 0)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    surface = calloc (1, sizeof (cairo_glx_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_gl_surface_init (device, &surface->base,
+			    CAIRO_CONTENT_COLOR_ALPHA, width, height);
+    surface->win = win;
+
+    return &surface->base.base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-gstate-private.h b/libs/cairo-1.16.0/src/cairo-gstate-private.h
new file mode 100644
index 0000000..198c669
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gstate-private.h
@@ -0,0 +1,396 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_GSTATE_PRIVATE_H
+#define CAIRO_GSTATE_PRIVATE_H
+
+#include "cairo-clip-private.h"
+
+struct _cairo_gstate {
+    cairo_operator_t op;
+
+    double opacity;
+    double tolerance;
+    cairo_antialias_t antialias;
+
+    cairo_stroke_style_t stroke_style;
+
+    cairo_fill_rule_t fill_rule;
+
+    cairo_font_face_t *font_face;
+    cairo_scaled_font_t *scaled_font;	/* Specific to the current CTM */
+    cairo_scaled_font_t *previous_scaled_font;	/* holdover */
+    cairo_matrix_t font_matrix;
+    cairo_font_options_t font_options;
+
+    cairo_clip_t *clip;
+
+    cairo_surface_t *target;		/* The target to which all rendering is directed */
+    cairo_surface_t *parent_target;	/* The previous target which was receiving rendering */
+    cairo_surface_t *original_target;	/* The original target the initial gstate was created with */
+
+    /* the user is allowed to update the device after we have cached the matrices... */
+    cairo_observer_t device_transform_observer;
+
+    cairo_matrix_t ctm;
+    cairo_matrix_t ctm_inverse;
+    cairo_matrix_t source_ctm_inverse; /* At the time ->source was set */
+    cairo_bool_t is_identity;
+
+    cairo_pattern_t *source;
+
+    struct _cairo_gstate *next;
+};
+
+/* cairo-gstate.c */
+cairo_private cairo_status_t
+_cairo_gstate_init (cairo_gstate_t  *gstate,
+		    cairo_surface_t *target);
+
+cairo_private void
+_cairo_gstate_fini (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_save (cairo_gstate_t **gstate, cairo_gstate_t **freelist);
+
+cairo_private cairo_status_t
+_cairo_gstate_restore (cairo_gstate_t **gstate, cairo_gstate_t **freelist);
+
+cairo_private cairo_bool_t
+_cairo_gstate_is_group (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_redirect_target (cairo_gstate_t *gstate, cairo_surface_t *child);
+
+cairo_private cairo_surface_t *
+_cairo_gstate_get_target (cairo_gstate_t *gstate);
+
+cairo_private cairo_surface_t *
+_cairo_gstate_get_original_target (cairo_gstate_t *gstate);
+
+cairo_private cairo_clip_t *
+_cairo_gstate_get_clip (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_source (cairo_gstate_t *gstate, cairo_pattern_t *source);
+
+cairo_private cairo_pattern_t *
+_cairo_gstate_get_source (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_operator (cairo_gstate_t *gstate, cairo_operator_t op);
+
+cairo_private cairo_operator_t
+_cairo_gstate_get_operator (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_opacity (cairo_gstate_t *gstate, double opacity);
+
+cairo_private double
+_cairo_gstate_get_opacity (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_tolerance (cairo_gstate_t *gstate, double tolerance);
+
+cairo_private double
+_cairo_gstate_get_tolerance (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_fill_rule (cairo_gstate_t *gstate, cairo_fill_rule_t fill_rule);
+
+cairo_private cairo_fill_rule_t
+_cairo_gstate_get_fill_rule (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_line_width (cairo_gstate_t *gstate, double width);
+
+cairo_private double
+_cairo_gstate_get_line_width (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_line_cap (cairo_gstate_t *gstate, cairo_line_cap_t line_cap);
+
+cairo_private cairo_line_cap_t
+_cairo_gstate_get_line_cap (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_line_join (cairo_gstate_t *gstate, cairo_line_join_t line_join);
+
+cairo_private cairo_line_join_t
+_cairo_gstate_get_line_join (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_dash (cairo_gstate_t *gstate, const double *dash, int num_dashes, double offset);
+
+cairo_private void
+_cairo_gstate_get_dash (cairo_gstate_t *gstate, double *dash, int *num_dashes, double *offset);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_miter_limit (cairo_gstate_t *gstate, double limit);
+
+cairo_private double
+_cairo_gstate_get_miter_limit (cairo_gstate_t *gstate);
+
+cairo_private void
+_cairo_gstate_get_matrix (cairo_gstate_t *gstate, cairo_matrix_t *matrix);
+
+cairo_private cairo_status_t
+_cairo_gstate_translate (cairo_gstate_t *gstate, double tx, double ty);
+
+cairo_private cairo_status_t
+_cairo_gstate_scale (cairo_gstate_t *gstate, double sx, double sy);
+
+cairo_private cairo_status_t
+_cairo_gstate_rotate (cairo_gstate_t *gstate, double angle);
+
+cairo_private cairo_status_t
+_cairo_gstate_transform (cairo_gstate_t	      *gstate,
+			 const cairo_matrix_t *matrix);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_matrix (cairo_gstate_t       *gstate,
+			  const cairo_matrix_t *matrix);
+
+cairo_private void
+_cairo_gstate_identity_matrix (cairo_gstate_t *gstate);
+
+cairo_private void
+_cairo_gstate_user_to_device (cairo_gstate_t *gstate, double *x, double *y);
+
+cairo_private void
+_cairo_gstate_user_to_device_distance (cairo_gstate_t *gstate, double *dx, double *dy);
+
+cairo_private void
+_cairo_gstate_device_to_user (cairo_gstate_t *gstate, double *x, double *y);
+
+cairo_private void
+_cairo_gstate_device_to_user_distance (cairo_gstate_t *gstate, double *dx, double *dy);
+
+cairo_private void
+_do_cairo_gstate_user_to_backend (cairo_gstate_t *gstate, double *x, double *y);
+
+static inline void
+_cairo_gstate_user_to_backend (cairo_gstate_t *gstate, double *x, double *y)
+{
+    if (! gstate->is_identity)
+	_do_cairo_gstate_user_to_backend (gstate, x, y);
+}
+
+cairo_private void
+_do_cairo_gstate_user_to_backend_distance (cairo_gstate_t *gstate, double *x, double *y);
+
+static inline void
+_cairo_gstate_user_to_backend_distance (cairo_gstate_t *gstate, double *x, double *y)
+{
+    if (! gstate->is_identity)
+	_do_cairo_gstate_user_to_backend_distance (gstate, x, y);
+}
+
+cairo_private void
+_do_cairo_gstate_backend_to_user (cairo_gstate_t *gstate, double *x, double *y);
+
+static inline void
+_cairo_gstate_backend_to_user (cairo_gstate_t *gstate, double *x, double *y)
+{
+    if (! gstate->is_identity)
+	_do_cairo_gstate_backend_to_user (gstate, x, y);
+}
+
+cairo_private void
+_do_cairo_gstate_backend_to_user_distance (cairo_gstate_t *gstate, double *x, double *y);
+
+static inline void
+_cairo_gstate_backend_to_user_distance (cairo_gstate_t *gstate, double *x, double *y)
+{
+    if (! gstate->is_identity)
+	_do_cairo_gstate_backend_to_user_distance (gstate, x, y);
+}
+
+cairo_private void
+_cairo_gstate_backend_to_user_rectangle (cairo_gstate_t *gstate,
+                                         double *x1, double *y1,
+                                         double *x2, double *y2,
+                                         cairo_bool_t *is_tight);
+
+cairo_private void
+_cairo_gstate_path_extents (cairo_gstate_t     *gstate,
+			    cairo_path_fixed_t *path,
+			    double *x1, double *y1,
+			    double *x2, double *y2);
+
+cairo_private cairo_status_t
+_cairo_gstate_paint (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_mask (cairo_gstate_t  *gstate,
+		    cairo_pattern_t *mask);
+
+cairo_private cairo_status_t
+_cairo_gstate_stroke (cairo_gstate_t *gstate, cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_gstate_fill (cairo_gstate_t *gstate, cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_gstate_copy_page (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_show_page (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_stroke_extents (cairo_gstate_t	 *gstate,
+			      cairo_path_fixed_t *path,
+                              double *x1, double *y1,
+			      double *x2, double *y2);
+
+cairo_private cairo_status_t
+_cairo_gstate_fill_extents (cairo_gstate_t     *gstate,
+			    cairo_path_fixed_t *path,
+                            double *x1, double *y1,
+			    double *x2, double *y2);
+
+cairo_private cairo_status_t
+_cairo_gstate_in_stroke (cairo_gstate_t	    *gstate,
+			 cairo_path_fixed_t *path,
+			 double		     x,
+			 double		     y,
+			 cairo_bool_t	    *inside_ret);
+
+cairo_private cairo_bool_t
+_cairo_gstate_in_fill (cairo_gstate_t	  *gstate,
+		       cairo_path_fixed_t *path,
+		       double		   x,
+		       double		   y);
+
+cairo_private cairo_bool_t
+_cairo_gstate_in_clip (cairo_gstate_t	  *gstate,
+		       double		   x,
+		       double		   y);
+
+cairo_private cairo_status_t
+_cairo_gstate_clip (cairo_gstate_t *gstate, cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_gstate_reset_clip (cairo_gstate_t *gstate);
+
+cairo_private cairo_bool_t
+_cairo_gstate_clip_extents (cairo_gstate_t *gstate,
+		            double         *x1,
+		            double         *y1,
+			    double         *x2,
+			    double         *y2);
+
+cairo_private cairo_rectangle_list_t*
+_cairo_gstate_copy_clip_rectangle_list (cairo_gstate_t *gstate);
+
+cairo_private cairo_status_t
+_cairo_gstate_show_surface (cairo_gstate_t	*gstate,
+			    cairo_surface_t	*surface,
+			    double		 x,
+			    double		 y,
+			    double		width,
+			    double		height);
+
+cairo_private cairo_status_t
+_cairo_gstate_tag_begin (cairo_gstate_t	*gstate,
+			 const char     *tag_name,
+			 const char     *attributes);
+
+cairo_private cairo_status_t
+_cairo_gstate_tag_end (cairo_gstate_t	*gstate,
+		       const char       *tag_name);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_font_size (cairo_gstate_t *gstate,
+			     double          size);
+
+cairo_private void
+_cairo_gstate_get_font_matrix (cairo_gstate_t *gstate,
+			       cairo_matrix_t *matrix);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_font_matrix (cairo_gstate_t	    *gstate,
+			       const cairo_matrix_t *matrix);
+
+cairo_private void
+_cairo_gstate_get_font_options (cairo_gstate_t       *gstate,
+				cairo_font_options_t *options);
+
+cairo_private void
+_cairo_gstate_set_font_options (cairo_gstate_t	           *gstate,
+				const cairo_font_options_t *options);
+
+cairo_private cairo_status_t
+_cairo_gstate_get_font_face (cairo_gstate_t     *gstate,
+			     cairo_font_face_t **font_face);
+
+cairo_private cairo_status_t
+_cairo_gstate_get_scaled_font (cairo_gstate_t       *gstate,
+			       cairo_scaled_font_t **scaled_font);
+
+cairo_private cairo_status_t
+_cairo_gstate_get_font_extents (cairo_gstate_t *gstate,
+				cairo_font_extents_t *extents);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_font_face (cairo_gstate_t    *gstate,
+			     cairo_font_face_t *font_face);
+
+cairo_private cairo_status_t
+_cairo_gstate_glyph_extents (cairo_gstate_t *gstate,
+			     const cairo_glyph_t *glyphs,
+			     int num_glyphs,
+			     cairo_text_extents_t *extents);
+
+cairo_private cairo_status_t
+_cairo_gstate_show_text_glyphs (cairo_gstate_t		   *gstate,
+				const cairo_glyph_t	   *glyphs,
+				int			    num_glyphs,
+				cairo_glyph_text_info_t    *info);
+
+cairo_private cairo_status_t
+_cairo_gstate_glyph_path (cairo_gstate_t      *gstate,
+			  const cairo_glyph_t *glyphs,
+			  int		       num_glyphs,
+			  cairo_path_fixed_t  *path);
+
+cairo_private cairo_status_t
+_cairo_gstate_set_antialias (cairo_gstate_t *gstate,
+			     cairo_antialias_t antialias);
+
+cairo_private cairo_antialias_t
+_cairo_gstate_get_antialias (cairo_gstate_t *gstate);
+
+#endif /* CAIRO_GSTATE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-gstate.c b/libs/cairo-1.16.0/src/cairo-gstate.c
new file mode 100644
index 0000000..ff0cb8b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-gstate.c
@@ -0,0 +1,2400 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-gstate-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-traps-private.h"
+
+static cairo_status_t
+_cairo_gstate_init_copy (cairo_gstate_t *gstate, cairo_gstate_t *other);
+
+static cairo_status_t
+_cairo_gstate_ensure_font_face (cairo_gstate_t *gstate);
+
+static cairo_status_t
+_cairo_gstate_ensure_scaled_font (cairo_gstate_t *gstate);
+
+static void
+_cairo_gstate_unset_scaled_font (cairo_gstate_t *gstate);
+
+static void
+_cairo_gstate_transform_glyphs_to_backend (cairo_gstate_t      *gstate,
+                                           const cairo_glyph_t *glyphs,
+                                           int                  num_glyphs,
+					   const cairo_text_cluster_t	*clusters,
+					   int			 num_clusters,
+					   cairo_text_cluster_flags_t cluster_flags,
+                                           cairo_glyph_t       *transformed_glyphs,
+					   int			*num_transformed_glyphs,
+					   cairo_text_cluster_t *transformed_clusters);
+
+static void
+_cairo_gstate_update_device_transform (cairo_observer_t *observer,
+				       void *arg)
+{
+    cairo_gstate_t *gstate = cairo_container_of (observer,
+						 cairo_gstate_t,
+						 device_transform_observer);
+
+    gstate->is_identity = (_cairo_matrix_is_identity (&gstate->ctm) &&
+			   _cairo_matrix_is_identity (&gstate->target->device_transform));
+}
+
+cairo_status_t
+_cairo_gstate_init (cairo_gstate_t  *gstate,
+		    cairo_surface_t *target)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
+
+    gstate->next = NULL;
+
+    gstate->op = CAIRO_GSTATE_OPERATOR_DEFAULT;
+    gstate->opacity = 1.;
+
+    gstate->tolerance = CAIRO_GSTATE_TOLERANCE_DEFAULT;
+    gstate->antialias = CAIRO_ANTIALIAS_DEFAULT;
+
+    _cairo_stroke_style_init (&gstate->stroke_style);
+
+    gstate->fill_rule = CAIRO_GSTATE_FILL_RULE_DEFAULT;
+
+    gstate->font_face = NULL;
+    gstate->scaled_font = NULL;
+    gstate->previous_scaled_font = NULL;
+
+    cairo_matrix_init_scale (&gstate->font_matrix,
+			     CAIRO_GSTATE_DEFAULT_FONT_SIZE,
+			     CAIRO_GSTATE_DEFAULT_FONT_SIZE);
+
+    _cairo_font_options_init_default (&gstate->font_options);
+
+    gstate->clip = NULL;
+
+    gstate->target = cairo_surface_reference (target);
+    gstate->parent_target = NULL;
+    gstate->original_target = cairo_surface_reference (target);
+
+    gstate->device_transform_observer.callback = _cairo_gstate_update_device_transform;
+    cairo_list_add (&gstate->device_transform_observer.link,
+		    &gstate->target->device_transform_observers);
+
+    gstate->is_identity = _cairo_matrix_is_identity (&gstate->target->device_transform);
+    cairo_matrix_init_identity (&gstate->ctm);
+    gstate->ctm_inverse = gstate->ctm;
+    gstate->source_ctm_inverse = gstate->ctm;
+
+    gstate->source = (cairo_pattern_t *) &_cairo_pattern_black.base;
+
+    /* Now that the gstate is fully initialized and ready for the eventual
+     * _cairo_gstate_fini(), we can check for errors (and not worry about
+     * the resource deallocation). */
+    return target->status;
+}
+
+/**
+ * _cairo_gstate_init_copy:
+ *
+ * Initialize @gstate by performing a deep copy of state fields from
+ * @other. Note that gstate->next is not copied but is set to %NULL by
+ * this function.
+ **/
+static cairo_status_t
+_cairo_gstate_init_copy (cairo_gstate_t *gstate, cairo_gstate_t *other)
+{
+    cairo_status_t status;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
+
+    gstate->op = other->op;
+    gstate->opacity = other->opacity;
+
+    gstate->tolerance = other->tolerance;
+    gstate->antialias = other->antialias;
+
+    status = _cairo_stroke_style_init_copy (&gstate->stroke_style,
+					    &other->stroke_style);
+    if (unlikely (status))
+	return status;
+
+    gstate->fill_rule = other->fill_rule;
+
+    gstate->font_face = cairo_font_face_reference (other->font_face);
+    gstate->scaled_font = cairo_scaled_font_reference (other->scaled_font);
+    gstate->previous_scaled_font = cairo_scaled_font_reference (other->previous_scaled_font);
+
+    gstate->font_matrix = other->font_matrix;
+
+    _cairo_font_options_init_copy (&gstate->font_options , &other->font_options);
+
+    gstate->clip = _cairo_clip_copy (other->clip);
+
+    gstate->target = cairo_surface_reference (other->target);
+    /* parent_target is always set to NULL; it's only ever set by redirect_target */
+    gstate->parent_target = NULL;
+    gstate->original_target = cairo_surface_reference (other->original_target);
+
+    gstate->device_transform_observer.callback = _cairo_gstate_update_device_transform;
+    cairo_list_add (&gstate->device_transform_observer.link,
+		    &gstate->target->device_transform_observers);
+
+    gstate->is_identity = other->is_identity;
+    gstate->ctm = other->ctm;
+    gstate->ctm_inverse = other->ctm_inverse;
+    gstate->source_ctm_inverse = other->source_ctm_inverse;
+
+    gstate->source = cairo_pattern_reference (other->source);
+
+    gstate->next = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gstate_fini (cairo_gstate_t *gstate)
+{
+    _cairo_stroke_style_fini (&gstate->stroke_style);
+
+    cairo_font_face_destroy (gstate->font_face);
+    gstate->font_face = NULL;
+
+    cairo_scaled_font_destroy (gstate->previous_scaled_font);
+    gstate->previous_scaled_font = NULL;
+
+    cairo_scaled_font_destroy (gstate->scaled_font);
+    gstate->scaled_font = NULL;
+
+    _cairo_clip_destroy (gstate->clip);
+
+    cairo_list_del (&gstate->device_transform_observer.link);
+
+    cairo_surface_destroy (gstate->target);
+    gstate->target = NULL;
+
+    cairo_surface_destroy (gstate->parent_target);
+    gstate->parent_target = NULL;
+
+    cairo_surface_destroy (gstate->original_target);
+    gstate->original_target = NULL;
+
+    cairo_pattern_destroy (gstate->source);
+    gstate->source = NULL;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
+}
+
+/**
+ * _cairo_gstate_save:
+ * @gstate: input/output gstate pointer
+ *
+ * Makes a copy of the current state of @gstate and saves it
+ * to @gstate->next, then put the address of the newly allcated
+ * copy into @gstate.  _cairo_gstate_restore() reverses this.
+ **/
+cairo_status_t
+_cairo_gstate_save (cairo_gstate_t **gstate, cairo_gstate_t **freelist)
+{
+    cairo_gstate_t *top;
+    cairo_status_t status;
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    top = *freelist;
+    if (top == NULL) {
+	top = _cairo_malloc (sizeof (cairo_gstate_t));
+	if (unlikely (top == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else
+	*freelist = top->next;
+
+    status = _cairo_gstate_init_copy (top, *gstate);
+    if (unlikely (status)) {
+	top->next = *freelist;
+	*freelist = top;
+	return status;
+    }
+
+    top->next = *gstate;
+    *gstate = top;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_gstate_restore:
+ * @gstate: input/output gstate pointer
+ *
+ * Reverses the effects of one _cairo_gstate_save() call.
+ **/
+cairo_status_t
+_cairo_gstate_restore (cairo_gstate_t **gstate, cairo_gstate_t **freelist)
+{
+    cairo_gstate_t *top;
+
+    top = *gstate;
+    if (top->next == NULL)
+	return _cairo_error (CAIRO_STATUS_INVALID_RESTORE);
+
+    *gstate = top->next;
+
+    _cairo_gstate_fini (top);
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (&top->next, sizeof (cairo_gstate_t *)));
+    top->next = *freelist;
+    *freelist = top;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_gstate_redirect_target:
+ * @gstate: a #cairo_gstate_t
+ * @child: the new child target
+ *
+ * Redirect @gstate rendering to a "child" target. The original
+ * "parent" target with which the gstate was created will not be
+ * affected. See _cairo_gstate_get_target().
+ **/
+cairo_status_t
+_cairo_gstate_redirect_target (cairo_gstate_t *gstate, cairo_surface_t *child)
+{
+    /* If this gstate is already redirected, this is an error; we need a
+     * new gstate to be able to redirect */
+    assert (gstate->parent_target == NULL);
+
+    /* Set up our new parent_target based on our current target;
+     * gstate->parent_target will take the ref that is held by gstate->target
+     */
+    gstate->parent_target = gstate->target;
+
+    /* Now set up our new target; we overwrite gstate->target directly,
+     * since its ref is now owned by gstate->parent_target */
+    gstate->target = cairo_surface_reference (child);
+    gstate->is_identity &= _cairo_matrix_is_identity (&child->device_transform);
+    cairo_list_move (&gstate->device_transform_observer.link,
+		     &gstate->target->device_transform_observers);
+
+    /* The clip is in surface backend coordinates for the previous target;
+     * translate it into the child's backend coordinates. */
+    _cairo_clip_destroy (gstate->clip);
+    gstate->clip = _cairo_clip_copy_with_translation (gstate->next->clip,
+						      child->device_transform.x0 - gstate->parent_target->device_transform.x0,
+						      child->device_transform.y0 - gstate->parent_target->device_transform.y0);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_gstate_is_group:
+ * @gstate: a #cairo_gstate_t
+ *
+ * Check if _cairo_gstate_redirect_target has been called on the head
+ * of the stack.
+ *
+ * Return value: %TRUE if @gstate is redirected to a target different
+ * than the previous state in the stack, %FALSE otherwise.
+ **/
+cairo_bool_t
+_cairo_gstate_is_group (cairo_gstate_t *gstate)
+{
+    return gstate->parent_target != NULL;
+}
+
+/**
+ * _cairo_gstate_get_target:
+ * @gstate: a #cairo_gstate_t
+ *
+ * Return the current drawing target; if drawing is not redirected,
+ * this will be the same as _cairo_gstate_get_original_target().
+ *
+ * Return value: the current target surface
+ **/
+cairo_surface_t *
+_cairo_gstate_get_target (cairo_gstate_t *gstate)
+{
+    return gstate->target;
+}
+
+/**
+ * _cairo_gstate_get_original_target:
+ * @gstate: a #cairo_gstate_t
+ *
+ * Return the original target with which @gstate was created. This
+ * function always returns the original target independent of any
+ * child target that may have been set with
+ * _cairo_gstate_redirect_target.
+ *
+ * Return value: the original target surface
+ **/
+cairo_surface_t *
+_cairo_gstate_get_original_target (cairo_gstate_t *gstate)
+{
+    return gstate->original_target;
+}
+
+/**
+ * _cairo_gstate_get_clip:
+ * @gstate: a #cairo_gstate_t
+ *
+ * This space left intentionally blank.
+ *
+ * Return value: a pointer to the gstate's #cairo_clip_t structure.
+ **/
+cairo_clip_t *
+_cairo_gstate_get_clip (cairo_gstate_t *gstate)
+{
+    return gstate->clip;
+}
+
+cairo_status_t
+_cairo_gstate_set_source (cairo_gstate_t  *gstate,
+			  cairo_pattern_t *source)
+{
+    if (source->status)
+	return source->status;
+
+    source = cairo_pattern_reference (source);
+    cairo_pattern_destroy (gstate->source);
+    gstate->source = source;
+    gstate->source_ctm_inverse = gstate->ctm_inverse;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_pattern_t *
+_cairo_gstate_get_source (cairo_gstate_t *gstate)
+{
+    if (gstate->source == &_cairo_pattern_black.base) {
+	/* do not expose the static object to the user */
+        gstate->source = _cairo_pattern_create_solid (CAIRO_COLOR_BLACK);
+    }
+
+    return gstate->source;
+}
+
+cairo_status_t
+_cairo_gstate_set_operator (cairo_gstate_t *gstate, cairo_operator_t op)
+{
+    gstate->op = op;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_operator_t
+_cairo_gstate_get_operator (cairo_gstate_t *gstate)
+{
+    return gstate->op;
+}
+
+cairo_status_t
+_cairo_gstate_set_opacity (cairo_gstate_t *gstate, double op)
+{
+    gstate->opacity = op;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+double
+_cairo_gstate_get_opacity (cairo_gstate_t *gstate)
+{
+    return gstate->opacity;
+}
+
+cairo_status_t
+_cairo_gstate_set_tolerance (cairo_gstate_t *gstate, double tolerance)
+{
+    gstate->tolerance = tolerance;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+double
+_cairo_gstate_get_tolerance (cairo_gstate_t *gstate)
+{
+    return gstate->tolerance;
+}
+
+cairo_status_t
+_cairo_gstate_set_fill_rule (cairo_gstate_t *gstate, cairo_fill_rule_t fill_rule)
+{
+    gstate->fill_rule = fill_rule;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_fill_rule_t
+_cairo_gstate_get_fill_rule (cairo_gstate_t *gstate)
+{
+    return gstate->fill_rule;
+}
+
+cairo_status_t
+_cairo_gstate_set_line_width (cairo_gstate_t *gstate, double width)
+{
+    gstate->stroke_style.line_width = width;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+double
+_cairo_gstate_get_line_width (cairo_gstate_t *gstate)
+{
+    return gstate->stroke_style.line_width;
+}
+
+cairo_status_t
+_cairo_gstate_set_line_cap (cairo_gstate_t *gstate, cairo_line_cap_t line_cap)
+{
+    gstate->stroke_style.line_cap = line_cap;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_line_cap_t
+_cairo_gstate_get_line_cap (cairo_gstate_t *gstate)
+{
+    return gstate->stroke_style.line_cap;
+}
+
+cairo_status_t
+_cairo_gstate_set_line_join (cairo_gstate_t *gstate, cairo_line_join_t line_join)
+{
+    gstate->stroke_style.line_join = line_join;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_line_join_t
+_cairo_gstate_get_line_join (cairo_gstate_t *gstate)
+{
+    return gstate->stroke_style.line_join;
+}
+
+cairo_status_t
+_cairo_gstate_set_dash (cairo_gstate_t *gstate, const double *dash, int num_dashes, double offset)
+{
+    double dash_total, on_total, off_total;
+    int i, j;
+
+    free (gstate->stroke_style.dash);
+
+    gstate->stroke_style.num_dashes = num_dashes;
+
+    if (gstate->stroke_style.num_dashes == 0) {
+	gstate->stroke_style.dash = NULL;
+	gstate->stroke_style.dash_offset = 0.0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    gstate->stroke_style.dash = _cairo_malloc_ab (gstate->stroke_style.num_dashes, sizeof (double));
+    if (unlikely (gstate->stroke_style.dash == NULL)) {
+	gstate->stroke_style.num_dashes = 0;
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    on_total = off_total = dash_total = 0.0;
+    for (i = j = 0; i < num_dashes; i++) {
+	if (dash[i] < 0)
+	    return _cairo_error (CAIRO_STATUS_INVALID_DASH);
+
+	if (dash[i] == 0 && i > 0 && i < num_dashes - 1) {
+	    if (dash[++i] < 0)
+		return _cairo_error (CAIRO_STATUS_INVALID_DASH);
+
+	    gstate->stroke_style.dash[j-1] += dash[i];
+	    gstate->stroke_style.num_dashes -= 2;
+	} else
+	    gstate->stroke_style.dash[j++] = dash[i];
+
+	if (dash[i]) {
+	    dash_total += dash[i];
+	    if ((i & 1) == 0)
+		on_total += dash[i];
+	    else
+		off_total += dash[i];
+	}
+    }
+
+    if (dash_total == 0.0)
+	return _cairo_error (CAIRO_STATUS_INVALID_DASH);
+
+    /* An odd dash value indicate symmetric repeating, so the total
+     * is twice as long. */
+    if (gstate->stroke_style.num_dashes & 1) {
+	dash_total *= 2;
+	on_total += off_total;
+    }
+
+    if (dash_total - on_total < CAIRO_FIXED_ERROR_DOUBLE) {
+	/* Degenerate dash -> solid line */
+	free (gstate->stroke_style.dash);
+	gstate->stroke_style.dash = NULL;
+	gstate->stroke_style.num_dashes = 0;
+	gstate->stroke_style.dash_offset = 0.0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* The dashing code doesn't like a negative offset or a big positive
+     * offset, so we compute an equivalent offset which is guaranteed to be
+     * positive and less than twice the pattern length. */
+    offset = fmod (offset, dash_total);
+    if (offset < 0.0)
+	offset += dash_total;
+    if (offset <= 0.0)		/* Take care of -0 */
+	offset = 0.0;
+    gstate->stroke_style.dash_offset = offset;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gstate_get_dash (cairo_gstate_t *gstate,
+			double         *dashes,
+			int            *num_dashes,
+			double         *offset)
+{
+    if (dashes) {
+	memcpy (dashes,
+		gstate->stroke_style.dash,
+		sizeof (double) * gstate->stroke_style.num_dashes);
+    }
+
+    if (num_dashes)
+	*num_dashes = gstate->stroke_style.num_dashes;
+
+    if (offset)
+	*offset = gstate->stroke_style.dash_offset;
+}
+
+cairo_status_t
+_cairo_gstate_set_miter_limit (cairo_gstate_t *gstate, double limit)
+{
+    gstate->stroke_style.miter_limit = limit;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+double
+_cairo_gstate_get_miter_limit (cairo_gstate_t *gstate)
+{
+    return gstate->stroke_style.miter_limit;
+}
+
+void
+_cairo_gstate_get_matrix (cairo_gstate_t *gstate, cairo_matrix_t *matrix)
+{
+    *matrix = gstate->ctm;
+}
+
+cairo_status_t
+_cairo_gstate_translate (cairo_gstate_t *gstate, double tx, double ty)
+{
+    cairo_matrix_t tmp;
+
+    if (! ISFINITE (tx) || ! ISFINITE (ty))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    cairo_matrix_init_translate (&tmp, tx, ty);
+    cairo_matrix_multiply (&gstate->ctm, &tmp, &gstate->ctm);
+    gstate->is_identity = FALSE;
+
+    /* paranoid check against gradual numerical instability */
+    if (! _cairo_matrix_is_invertible (&gstate->ctm))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    cairo_matrix_init_translate (&tmp, -tx, -ty);
+    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_scale (cairo_gstate_t *gstate, double sx, double sy)
+{
+    cairo_matrix_t tmp;
+
+    if (sx * sy == 0.) /* either sx or sy is 0, or det == 0 due to underflow */
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+    if (! ISFINITE (sx) || ! ISFINITE (sy))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    cairo_matrix_init_scale (&tmp, sx, sy);
+    cairo_matrix_multiply (&gstate->ctm, &tmp, &gstate->ctm);
+    gstate->is_identity = FALSE;
+
+    /* paranoid check against gradual numerical instability */
+    if (! _cairo_matrix_is_invertible (&gstate->ctm))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    cairo_matrix_init_scale (&tmp, 1/sx, 1/sy);
+    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_rotate (cairo_gstate_t *gstate, double angle)
+{
+    cairo_matrix_t tmp;
+
+    if (angle == 0.)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! ISFINITE (angle))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    cairo_matrix_init_rotate (&tmp, angle);
+    cairo_matrix_multiply (&gstate->ctm, &tmp, &gstate->ctm);
+    gstate->is_identity = FALSE;
+
+    /* paranoid check against gradual numerical instability */
+    if (! _cairo_matrix_is_invertible (&gstate->ctm))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    cairo_matrix_init_rotate (&tmp, -angle);
+    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_transform (cairo_gstate_t	      *gstate,
+			 const cairo_matrix_t *matrix)
+{
+    cairo_matrix_t tmp;
+    cairo_status_t status;
+
+    if (! _cairo_matrix_is_invertible (matrix))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    if (_cairo_matrix_is_identity (matrix))
+	return CAIRO_STATUS_SUCCESS;
+
+    tmp = *matrix;
+    status = cairo_matrix_invert (&tmp);
+    if (unlikely (status))
+	return status;
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    cairo_matrix_multiply (&gstate->ctm, matrix, &gstate->ctm);
+    cairo_matrix_multiply (&gstate->ctm_inverse, &gstate->ctm_inverse, &tmp);
+    gstate->is_identity = FALSE;
+
+    /* paranoid check against gradual numerical instability */
+    if (! _cairo_matrix_is_invertible (&gstate->ctm))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_set_matrix (cairo_gstate_t       *gstate,
+			  const cairo_matrix_t *matrix)
+{
+    cairo_status_t status;
+
+    if (memcmp (matrix, &gstate->ctm, sizeof (cairo_matrix_t)) == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! _cairo_matrix_is_invertible (matrix))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    if (_cairo_matrix_is_identity (matrix)) {
+	_cairo_gstate_identity_matrix (gstate);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    gstate->ctm = *matrix;
+    gstate->ctm_inverse = *matrix;
+    status = cairo_matrix_invert (&gstate->ctm_inverse);
+    assert (status == CAIRO_STATUS_SUCCESS);
+    gstate->is_identity = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gstate_identity_matrix (cairo_gstate_t *gstate)
+{
+    if (_cairo_matrix_is_identity (&gstate->ctm))
+	return;
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    cairo_matrix_init_identity (&gstate->ctm);
+    cairo_matrix_init_identity (&gstate->ctm_inverse);
+    gstate->is_identity = _cairo_matrix_is_identity (&gstate->target->device_transform);
+}
+
+void
+_cairo_gstate_user_to_device (cairo_gstate_t *gstate, double *x, double *y)
+{
+    cairo_matrix_transform_point (&gstate->ctm, x, y);
+}
+
+void
+_cairo_gstate_user_to_device_distance (cairo_gstate_t *gstate,
+				       double *dx, double *dy)
+{
+    cairo_matrix_transform_distance (&gstate->ctm, dx, dy);
+}
+
+void
+_cairo_gstate_device_to_user (cairo_gstate_t *gstate, double *x, double *y)
+{
+    cairo_matrix_transform_point (&gstate->ctm_inverse, x, y);
+}
+
+void
+_cairo_gstate_device_to_user_distance (cairo_gstate_t *gstate,
+				       double *dx, double *dy)
+{
+    cairo_matrix_transform_distance (&gstate->ctm_inverse, dx, dy);
+}
+
+void
+_do_cairo_gstate_user_to_backend (cairo_gstate_t *gstate, double *x, double *y)
+{
+    cairo_matrix_transform_point (&gstate->ctm, x, y);
+    cairo_matrix_transform_point (&gstate->target->device_transform, x, y);
+}
+
+void
+_do_cairo_gstate_user_to_backend_distance (cairo_gstate_t *gstate, double *x, double *y)
+{
+    cairo_matrix_transform_distance (&gstate->ctm, x, y);
+    cairo_matrix_transform_distance (&gstate->target->device_transform, x, y);
+}
+
+void
+_do_cairo_gstate_backend_to_user (cairo_gstate_t *gstate, double *x, double *y)
+{
+    cairo_matrix_transform_point (&gstate->target->device_transform_inverse, x, y);
+    cairo_matrix_transform_point (&gstate->ctm_inverse, x, y);
+}
+
+void
+_do_cairo_gstate_backend_to_user_distance (cairo_gstate_t *gstate, double *x, double *y)
+{
+    cairo_matrix_transform_distance (&gstate->target->device_transform_inverse, x, y);
+    cairo_matrix_transform_distance (&gstate->ctm_inverse, x, y);
+}
+
+void
+_cairo_gstate_backend_to_user_rectangle (cairo_gstate_t *gstate,
+                                         double *x1, double *y1,
+                                         double *x2, double *y2,
+                                         cairo_bool_t *is_tight)
+{
+    cairo_matrix_t matrix_inverse;
+
+    if (! _cairo_matrix_is_identity (&gstate->target->device_transform_inverse) ||
+    ! _cairo_matrix_is_identity (&gstate->ctm_inverse))
+    {
+	cairo_matrix_multiply (&matrix_inverse,
+			       &gstate->target->device_transform_inverse,
+			       &gstate->ctm_inverse);
+	_cairo_matrix_transform_bounding_box (&matrix_inverse,
+					      x1, y1, x2, y2, is_tight);
+    }
+
+    else
+    {
+	if (is_tight)
+	    *is_tight = TRUE;
+    }
+}
+
+/* XXX: NYI
+cairo_status_t
+_cairo_gstate_stroke_to_path (cairo_gstate_t *gstate)
+{
+    cairo_status_t status;
+
+    _cairo_pen_init (&gstate);
+    return CAIRO_STATUS_SUCCESS;
+}
+*/
+
+void
+_cairo_gstate_path_extents (cairo_gstate_t     *gstate,
+			    cairo_path_fixed_t *path,
+			    double *x1, double *y1,
+			    double *x2, double *y2)
+{
+    cairo_box_t box;
+    double px1, py1, px2, py2;
+
+    if (_cairo_path_fixed_extents (path, &box)) {
+	px1 = _cairo_fixed_to_double (box.p1.x);
+	py1 = _cairo_fixed_to_double (box.p1.y);
+	px2 = _cairo_fixed_to_double (box.p2.x);
+	py2 = _cairo_fixed_to_double (box.p2.y);
+
+	_cairo_gstate_backend_to_user_rectangle (gstate,
+						 &px1, &py1, &px2, &py2,
+						 NULL);
+    } else {
+	px1 = 0.0;
+	py1 = 0.0;
+	px2 = 0.0;
+	py2 = 0.0;
+    }
+
+    if (x1)
+	*x1 = px1;
+    if (y1)
+	*y1 = py1;
+    if (x2)
+	*x2 = px2;
+    if (y2)
+	*y2 = py2;
+}
+
+static void
+_cairo_gstate_copy_pattern (cairo_pattern_t *pattern,
+			    const cairo_pattern_t *original)
+{
+    /* First check if the we can replace the original with a much simpler
+     * pattern. For example, gradients that are uniform or just have a single
+     * stop can sometimes be replaced with a solid.
+     */
+
+    if (_cairo_pattern_is_clear (original)) {
+        _cairo_pattern_init_solid ((cairo_solid_pattern_t *) pattern,
+				   CAIRO_COLOR_TRANSPARENT);
+	return;
+    }
+
+    if (original->type == CAIRO_PATTERN_TYPE_LINEAR ||
+	original->type == CAIRO_PATTERN_TYPE_RADIAL)
+    {
+        cairo_color_t color;
+	if (_cairo_gradient_pattern_is_solid ((cairo_gradient_pattern_t *) original,
+					      NULL,
+					      &color))
+	{
+	    _cairo_pattern_init_solid ((cairo_solid_pattern_t *) pattern,
+				       &color);
+	    return;
+	}
+    }
+
+    _cairo_pattern_init_static_copy (pattern, original);
+}
+
+static void
+_cairo_gstate_copy_transformed_pattern (cairo_gstate_t  *gstate,
+					cairo_pattern_t *pattern,
+					const cairo_pattern_t *original,
+					const cairo_matrix_t  *ctm_inverse)
+{
+    _cairo_gstate_copy_pattern (pattern, original);
+
+    /* apply device_transform first so that it is transformed by ctm_inverse */
+    if (original->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *surface_pattern;
+	cairo_surface_t *surface;
+
+        surface_pattern = (cairo_surface_pattern_t *) original;
+        surface = surface_pattern->surface;
+
+	if (_cairo_surface_has_device_transform (surface))
+	    _cairo_pattern_pretransform (pattern, &surface->device_transform);
+    }
+
+    if (! _cairo_matrix_is_identity (ctm_inverse))
+	_cairo_pattern_transform (pattern, ctm_inverse);
+
+    if (_cairo_surface_has_device_transform (gstate->target)) {
+        _cairo_pattern_transform (pattern,
+                                  &gstate->target->device_transform_inverse);
+    }
+}
+
+static void
+_cairo_gstate_copy_transformed_source (cairo_gstate_t   *gstate,
+				       cairo_pattern_t  *pattern)
+{
+    _cairo_gstate_copy_transformed_pattern (gstate, pattern,
+					    gstate->source,
+					    &gstate->source_ctm_inverse);
+}
+
+static void
+_cairo_gstate_copy_transformed_mask (cairo_gstate_t   *gstate,
+				     cairo_pattern_t  *pattern,
+				     cairo_pattern_t  *mask)
+{
+    _cairo_gstate_copy_transformed_pattern (gstate, pattern,
+					    mask,
+					    &gstate->ctm_inverse);
+}
+
+static cairo_operator_t
+_reduce_op (cairo_gstate_t *gstate)
+{
+    cairo_operator_t op;
+    const cairo_pattern_t *pattern;
+
+    op = gstate->op;
+    if (op != CAIRO_OPERATOR_SOURCE)
+	return op;
+
+    pattern = gstate->source;
+    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
+	if (solid->color.alpha_short <= 0x00ff) {
+	    op = CAIRO_OPERATOR_CLEAR;
+	} else if ((gstate->target->content & CAIRO_CONTENT_ALPHA) == 0) {
+	    if ((solid->color.red_short |
+		 solid->color.green_short |
+		 solid->color.blue_short) <= 0x00ff)
+	    {
+		op = CAIRO_OPERATOR_CLEAR;
+	    }
+	}
+    } else if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	const cairo_surface_pattern_t *surface = (cairo_surface_pattern_t *) pattern;
+	if (surface->surface->is_clear &&
+	    surface->surface->content & CAIRO_CONTENT_ALPHA)
+	{
+	    op = CAIRO_OPERATOR_CLEAR;
+	}
+    } else {
+	const cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t *) pattern;
+	if (gradient->n_stops == 0)
+	    op = CAIRO_OPERATOR_CLEAR;
+    }
+
+    return op;
+}
+
+static cairo_status_t
+_cairo_gstate_get_pattern_status (const cairo_pattern_t *pattern)
+{
+    if (unlikely (pattern->type == CAIRO_PATTERN_TYPE_MESH &&
+		  ((const cairo_mesh_pattern_t *) pattern)->current_patch))
+    {
+	/* If current patch != NULL, the pattern is under construction
+	 * and cannot be used as a source */
+	return CAIRO_STATUS_INVALID_MESH_CONSTRUCTION;
+    }
+
+    return pattern->status;
+}
+
+cairo_status_t
+_cairo_gstate_paint (cairo_gstate_t *gstate)
+{
+    cairo_pattern_union_t source_pattern;
+    const cairo_pattern_t *pattern;
+    cairo_status_t status;
+    cairo_operator_t op;
+
+    status = _cairo_gstate_get_pattern_status (gstate->source);
+    if (unlikely (status))
+	return status;
+
+    if (gstate->op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_clip_is_all_clipped (gstate->clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    op = _reduce_op (gstate);
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	pattern = &_cairo_pattern_clear.base;
+    } else {
+	_cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
+	pattern = &source_pattern.base;
+    }
+
+    return _cairo_surface_paint (gstate->target,
+				 op, pattern,
+				 gstate->clip);
+}
+
+cairo_status_t
+_cairo_gstate_mask (cairo_gstate_t  *gstate,
+		    cairo_pattern_t *mask)
+{
+    cairo_pattern_union_t source_pattern, mask_pattern;
+    const cairo_pattern_t *source;
+    cairo_operator_t op;
+    cairo_status_t status;
+
+    status = _cairo_gstate_get_pattern_status (mask);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_gstate_get_pattern_status (gstate->source);
+    if (unlikely (status))
+	return status;
+
+    if (gstate->op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_clip_is_all_clipped (gstate->clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    assert (gstate->opacity == 1.0);
+
+    if (_cairo_pattern_is_opaque (mask, NULL))
+	return _cairo_gstate_paint (gstate);
+
+    if (_cairo_pattern_is_clear (mask) &&
+	_cairo_operator_bounded_by_mask (gstate->op))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    op = _reduce_op (gstate);
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	source = &_cairo_pattern_clear.base;
+    } else {
+	_cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
+	source = &source_pattern.base;
+    }
+    _cairo_gstate_copy_transformed_mask (gstate, &mask_pattern.base, mask);
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID &&
+	mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID &&
+	_cairo_operator_bounded_by_source (op))
+    {
+	const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
+	cairo_color_t combined;
+
+	if (mask_pattern.base.has_component_alpha) {
+#define M(R, A, B, c) R.c = A.c * B.c
+	    M(combined, solid->color, mask_pattern.solid.color, red);
+	    M(combined, solid->color, mask_pattern.solid.color, green);
+	    M(combined, solid->color, mask_pattern.solid.color, blue);
+	    M(combined, solid->color, mask_pattern.solid.color, alpha);
+#undef M
+	} else {
+	    combined = solid->color;
+	    _cairo_color_multiply_alpha (&combined, mask_pattern.solid.color.alpha);
+	}
+
+	_cairo_pattern_init_solid (&source_pattern.solid, &combined);
+
+	status = _cairo_surface_paint (gstate->target, op,
+				       &source_pattern.base,
+				       gstate->clip);
+    }
+    else
+    {
+	status = _cairo_surface_mask (gstate->target, op,
+				      source,
+				      &mask_pattern.base,
+				      gstate->clip);
+    }
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gstate_stroke (cairo_gstate_t *gstate, cairo_path_fixed_t *path)
+{
+    cairo_pattern_union_t source_pattern;
+    cairo_stroke_style_t style;
+    double dash[2];
+    cairo_status_t status;
+    cairo_matrix_t aggregate_transform;
+    cairo_matrix_t aggregate_transform_inverse;
+
+    status = _cairo_gstate_get_pattern_status (gstate->source);
+    if (unlikely (status))
+	return status;
+
+    if (gstate->op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (gstate->stroke_style.line_width <= 0.0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_clip_is_all_clipped (gstate->clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    assert (gstate->opacity == 1.0);
+
+    cairo_matrix_multiply (&aggregate_transform,
+                           &gstate->ctm,
+                           &gstate->target->device_transform);
+    cairo_matrix_multiply (&aggregate_transform_inverse,
+                           &gstate->target->device_transform_inverse,
+                           &gstate->ctm_inverse);
+
+    memcpy (&style, &gstate->stroke_style, sizeof (gstate->stroke_style));
+    if (_cairo_stroke_style_dash_can_approximate (&gstate->stroke_style, &aggregate_transform, gstate->tolerance)) {
+        style.dash = dash;
+        _cairo_stroke_style_dash_approximate (&gstate->stroke_style, &gstate->ctm, gstate->tolerance,
+					      &style.dash_offset,
+					      style.dash,
+					      &style.num_dashes);
+    }
+
+    _cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
+
+    return _cairo_surface_stroke (gstate->target,
+				  gstate->op,
+				  &source_pattern.base,
+				  path,
+				  &style,
+				  &aggregate_transform,
+				  &aggregate_transform_inverse,
+				  gstate->tolerance,
+				  gstate->antialias,
+				  gstate->clip);
+}
+
+cairo_status_t
+_cairo_gstate_in_stroke (cairo_gstate_t	    *gstate,
+			 cairo_path_fixed_t *path,
+			 double		     x,
+			 double		     y,
+			 cairo_bool_t	    *inside_ret)
+{
+    cairo_status_t status;
+    cairo_rectangle_int_t extents;
+    cairo_box_t limit;
+    cairo_traps_t traps;
+
+    if (gstate->stroke_style.line_width <= 0.0) {
+	*inside_ret = FALSE;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_gstate_user_to_backend (gstate, &x, &y);
+
+    /* Before we perform the expensive stroke analysis,
+     * check whether the point is within the extents of the path.
+     */
+    _cairo_path_fixed_approximate_stroke_extents (path,
+						  &gstate->stroke_style,
+						  &gstate->ctm,
+						  gstate->target->is_vector,
+						  &extents);
+    if (x < extents.x || x > extents.x + extents.width ||
+	y < extents.y || y > extents.y + extents.height)
+    {
+	*inside_ret = FALSE;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    limit.p1.x = _cairo_fixed_from_double (x) - 1;
+    limit.p1.y = _cairo_fixed_from_double (y) - 1;
+    limit.p2.x = limit.p1.x + 2;
+    limit.p2.y = limit.p1.y + 2;
+
+    _cairo_traps_init (&traps);
+    _cairo_traps_limit (&traps, &limit, 1);
+
+    status = _cairo_path_fixed_stroke_polygon_to_traps (path,
+							&gstate->stroke_style,
+							&gstate->ctm,
+							&gstate->ctm_inverse,
+							gstate->tolerance,
+							&traps);
+    if (unlikely (status))
+	goto BAIL;
+
+    *inside_ret = _cairo_traps_contain (&traps, x, y);
+
+BAIL:
+    _cairo_traps_fini (&traps);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gstate_fill (cairo_gstate_t *gstate, cairo_path_fixed_t *path)
+{
+    cairo_status_t status;
+
+    status = _cairo_gstate_get_pattern_status (gstate->source);
+    if (unlikely (status))
+	return status;
+
+    if (gstate->op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_clip_is_all_clipped (gstate->clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    assert (gstate->opacity == 1.0);
+
+    if (_cairo_path_fixed_fill_is_empty (path)) {
+	if (_cairo_operator_bounded_by_mask (gstate->op))
+	    return CAIRO_STATUS_SUCCESS;
+
+	status = _cairo_surface_paint (gstate->target,
+				       CAIRO_OPERATOR_CLEAR,
+				       &_cairo_pattern_clear.base,
+				       gstate->clip);
+    } else {
+	cairo_pattern_union_t source_pattern;
+	const cairo_pattern_t *pattern;
+	cairo_operator_t op;
+	cairo_rectangle_int_t extents;
+	cairo_box_t box;
+
+	op = _reduce_op (gstate);
+	if (op == CAIRO_OPERATOR_CLEAR) {
+	    pattern = &_cairo_pattern_clear.base;
+	} else {
+	    _cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
+	    pattern = &source_pattern.base;
+	}
+
+	/* Toolkits often paint the entire background with a fill */
+	if (_cairo_surface_get_extents (gstate->target, &extents) &&
+	    _cairo_path_fixed_is_box (path, &box) &&
+	    box.p1.x <= _cairo_fixed_from_int (extents.x) &&
+	    box.p1.y <= _cairo_fixed_from_int (extents.y) &&
+	    box.p2.x >= _cairo_fixed_from_int (extents.x + extents.width) &&
+	    box.p2.y >= _cairo_fixed_from_int (extents.y + extents.height))
+	{
+	    status = _cairo_surface_paint (gstate->target, op, pattern,
+					   gstate->clip);
+	}
+	else
+	{
+	    status = _cairo_surface_fill (gstate->target, op, pattern,
+					  path,
+					  gstate->fill_rule,
+					  gstate->tolerance,
+					  gstate->antialias,
+					  gstate->clip);
+	}
+    }
+
+    return status;
+}
+
+cairo_bool_t
+_cairo_gstate_in_fill (cairo_gstate_t	  *gstate,
+		       cairo_path_fixed_t *path,
+		       double		   x,
+		       double		   y)
+{
+    _cairo_gstate_user_to_backend (gstate, &x, &y);
+
+    return _cairo_path_fixed_in_fill (path,
+				      gstate->fill_rule,
+				      gstate->tolerance,
+				      x, y);
+}
+
+cairo_bool_t
+_cairo_gstate_in_clip (cairo_gstate_t	  *gstate,
+		       double		   x,
+		       double		   y)
+{
+    cairo_clip_t *clip = gstate->clip;
+    int i;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return FALSE;
+
+    if (clip == NULL)
+	return TRUE;
+
+    _cairo_gstate_user_to_backend (gstate, &x, &y);
+
+    if (x <  clip->extents.x ||
+	x >= clip->extents.x + clip->extents.width ||
+	y <  clip->extents.y ||
+	y >= clip->extents.y + clip->extents.height)
+    {
+	return FALSE;
+    }
+
+    if (clip->num_boxes) {
+	int fx, fy;
+
+	fx = _cairo_fixed_from_double (x);
+	fy = _cairo_fixed_from_double (y);
+	for (i = 0; i < clip->num_boxes; i++) {
+	    if (fx >= clip->boxes[i].p1.x && fx <= clip->boxes[i].p2.x &&
+		fy >= clip->boxes[i].p1.y && fy <= clip->boxes[i].p2.y)
+		break;
+	}
+	if (i == clip->num_boxes)
+	    return FALSE;
+    }
+
+    if (clip->path) {
+	cairo_clip_path_t *clip_path = clip->path;
+	do {
+	    if (! _cairo_path_fixed_in_fill (&clip_path->path,
+					     clip_path->fill_rule,
+					     clip_path->tolerance,
+					     x, y))
+		return FALSE;
+	} while ((clip_path = clip_path->prev) != NULL);
+    }
+
+    return TRUE;
+}
+
+cairo_status_t
+_cairo_gstate_copy_page (cairo_gstate_t *gstate)
+{
+    cairo_surface_copy_page (gstate->target);
+    return cairo_surface_status (gstate->target);
+}
+
+cairo_status_t
+_cairo_gstate_show_page (cairo_gstate_t *gstate)
+{
+    cairo_surface_show_page (gstate->target);
+    return cairo_surface_status (gstate->target);
+}
+
+static void
+_cairo_gstate_extents_to_user_rectangle (cairo_gstate_t	  *gstate,
+					 const cairo_box_t *extents,
+					 double *x1, double *y1,
+					 double *x2, double *y2)
+{
+    double px1, py1, px2, py2;
+
+    px1 = _cairo_fixed_to_double (extents->p1.x);
+    py1 = _cairo_fixed_to_double (extents->p1.y);
+    px2 = _cairo_fixed_to_double (extents->p2.x);
+    py2 = _cairo_fixed_to_double (extents->p2.y);
+
+    _cairo_gstate_backend_to_user_rectangle (gstate,
+					     &px1, &py1, &px2, &py2,
+					     NULL);
+    if (x1)
+	*x1 = px1;
+    if (y1)
+	*y1 = py1;
+    if (x2)
+	*x2 = px2;
+    if (y2)
+	*y2 = py2;
+}
+
+cairo_status_t
+_cairo_gstate_stroke_extents (cairo_gstate_t	 *gstate,
+			      cairo_path_fixed_t *path,
+                              double *x1, double *y1,
+			      double *x2, double *y2)
+{
+    cairo_int_status_t status;
+    cairo_box_t extents;
+    cairo_bool_t empty;
+
+    if (x1)
+	*x1 = 0.0;
+    if (y1)
+	*y1 = 0.0;
+    if (x2)
+	*x2 = 0.0;
+    if (y2)
+	*y2 = 0.0;
+
+    if (gstate->stroke_style.line_width <= 0.0)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								&gstate->stroke_style,
+								&gstate->ctm,
+								gstate->antialias,
+								&boxes);
+	empty = boxes.num_boxes == 0;
+	if (! empty)
+	    _cairo_boxes_extents (&boxes, &extents);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_polygon_t polygon;
+
+	_cairo_polygon_init (&polygon, NULL, 0);
+	status = _cairo_path_fixed_stroke_to_polygon (path,
+						      &gstate->stroke_style,
+						      &gstate->ctm,
+						      &gstate->ctm_inverse,
+						      gstate->tolerance,
+						      &polygon);
+	empty = polygon.num_edges == 0;
+	if (! empty)
+	    extents = polygon.extents;
+	_cairo_polygon_fini (&polygon);
+    }
+    if (! empty) {
+	_cairo_gstate_extents_to_user_rectangle (gstate, &extents,
+						 x1, y1, x2, y2);
+    }
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gstate_fill_extents (cairo_gstate_t     *gstate,
+			    cairo_path_fixed_t *path,
+                            double *x1, double *y1,
+			    double *x2, double *y2)
+{
+    cairo_status_t status;
+    cairo_box_t extents;
+    cairo_bool_t empty;
+
+    if (x1)
+	*x1 = 0.0;
+    if (y1)
+	*y1 = 0.0;
+    if (x2)
+	*x2 = 0.0;
+    if (y2)
+	*y2 = 0.0;
+
+    if (_cairo_path_fixed_fill_is_empty (path))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      gstate->fill_rule,
+							      gstate->antialias,
+							      &boxes);
+	empty = boxes.num_boxes == 0;
+	if (! empty)
+	    _cairo_boxes_extents (&boxes, &extents);
+
+	_cairo_boxes_fini (&boxes);
+    } else {
+	cairo_traps_t traps;
+
+	_cairo_traps_init (&traps);
+
+	status = _cairo_path_fixed_fill_to_traps (path,
+						  gstate->fill_rule,
+						  gstate->tolerance,
+						  &traps);
+	empty = traps.num_traps == 0;
+	if (! empty)
+	    _cairo_traps_extents (&traps, &extents);
+
+	_cairo_traps_fini (&traps);
+    }
+
+    if (! empty) {
+	_cairo_gstate_extents_to_user_rectangle (gstate, &extents,
+						 x1, y1, x2, y2);
+    }
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gstate_reset_clip (cairo_gstate_t *gstate)
+{
+    _cairo_clip_destroy (gstate->clip);
+    gstate->clip = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_clip (cairo_gstate_t *gstate, cairo_path_fixed_t *path)
+{
+    gstate->clip =
+	_cairo_clip_intersect_path (gstate->clip,
+				    path,
+				    gstate->fill_rule,
+				    gstate->tolerance,
+				    gstate->antialias);
+    /* XXX */
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_gstate_int_clip_extents (cairo_gstate_t        *gstate,
+				cairo_rectangle_int_t *extents)
+{
+    cairo_bool_t is_bounded;
+
+    is_bounded = _cairo_surface_get_extents (gstate->target, extents);
+
+    if (gstate->clip) {
+	_cairo_rectangle_intersect (extents,
+				    _cairo_clip_get_extents (gstate->clip));
+	is_bounded = TRUE;
+    }
+
+    return is_bounded;
+}
+
+cairo_bool_t
+_cairo_gstate_clip_extents (cairo_gstate_t *gstate,
+		            double         *x1,
+		            double         *y1,
+			    double         *x2,
+			    double         *y2)
+{
+    cairo_rectangle_int_t extents;
+    double px1, py1, px2, py2;
+
+    if (! _cairo_gstate_int_clip_extents (gstate, &extents))
+	return FALSE;
+
+    px1 = extents.x;
+    py1 = extents.y;
+    px2 = extents.x + (int) extents.width;
+    py2 = extents.y + (int) extents.height;
+
+    _cairo_gstate_backend_to_user_rectangle (gstate,
+					     &px1, &py1, &px2, &py2,
+					     NULL);
+
+    if (x1)
+	*x1 = px1;
+    if (y1)
+	*y1 = py1;
+    if (x2)
+	*x2 = px2;
+    if (y2)
+	*y2 = py2;
+
+    return TRUE;
+}
+
+cairo_rectangle_list_t*
+_cairo_gstate_copy_clip_rectangle_list (cairo_gstate_t *gstate)
+{
+    cairo_rectangle_int_t extents;
+    cairo_rectangle_list_t *list;
+    cairo_clip_t *clip;
+
+    if (_cairo_surface_get_extents (gstate->target, &extents))
+	clip = _cairo_clip_copy_intersect_rectangle (gstate->clip, &extents);
+    else
+	clip = gstate->clip;
+
+    list = _cairo_clip_copy_rectangle_list (clip, gstate);
+
+    if (clip != gstate->clip)
+	_cairo_clip_destroy (clip);
+
+    return list;
+}
+
+cairo_status_t
+_cairo_gstate_tag_begin (cairo_gstate_t *gstate,
+			 const char *tag_name, const char *attributes)
+{
+    cairo_pattern_union_t source_pattern;
+    cairo_stroke_style_t style;
+    double dash[2];
+    cairo_status_t status;
+    cairo_matrix_t aggregate_transform;
+    cairo_matrix_t aggregate_transform_inverse;
+
+    status = _cairo_gstate_get_pattern_status (gstate->source);
+    if (unlikely (status))
+	return status;
+
+    cairo_matrix_multiply (&aggregate_transform,
+                           &gstate->ctm,
+                           &gstate->target->device_transform);
+    cairo_matrix_multiply (&aggregate_transform_inverse,
+                           &gstate->target->device_transform_inverse,
+                           &gstate->ctm_inverse);
+
+    memcpy (&style, &gstate->stroke_style, sizeof (gstate->stroke_style));
+    if (_cairo_stroke_style_dash_can_approximate (&gstate->stroke_style, &aggregate_transform, gstate->tolerance)) {
+        style.dash = dash;
+        _cairo_stroke_style_dash_approximate (&gstate->stroke_style, &gstate->ctm, gstate->tolerance,
+					      &style.dash_offset,
+					      style.dash,
+					      &style.num_dashes);
+    }
+
+    _cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
+
+    return _cairo_surface_tag (gstate->target,
+			       TRUE, /* begin */
+			       tag_name,
+			       attributes ? attributes : "",
+			       &source_pattern.base,
+			       &style,
+			       &aggregate_transform,
+			       &aggregate_transform_inverse,
+			       gstate->clip);
+}
+
+cairo_status_t
+_cairo_gstate_tag_end (cairo_gstate_t *gstate,
+		       const char *tag_name)
+{
+    return _cairo_surface_tag (gstate->target,
+			       FALSE, /* begin */
+			       tag_name,
+			       NULL, /* attributes */
+			       NULL, /* source */
+			       NULL, /* stroke_style */
+			       NULL, /* ctm */
+			       NULL, /* ctm_inverse*/
+			       NULL); /* clip */
+}
+
+static void
+_cairo_gstate_unset_scaled_font (cairo_gstate_t *gstate)
+{
+    if (gstate->scaled_font == NULL)
+	return;
+
+    if (gstate->previous_scaled_font != NULL)
+	cairo_scaled_font_destroy (gstate->previous_scaled_font);
+
+    gstate->previous_scaled_font = gstate->scaled_font;
+    gstate->scaled_font = NULL;
+}
+
+cairo_status_t
+_cairo_gstate_set_font_size (cairo_gstate_t *gstate,
+			     double          size)
+{
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    cairo_matrix_init_scale (&gstate->font_matrix, size, size);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_set_font_matrix (cairo_gstate_t	    *gstate,
+			       const cairo_matrix_t *matrix)
+{
+    if (memcmp (matrix, &gstate->font_matrix, sizeof (cairo_matrix_t)) == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    gstate->font_matrix = *matrix;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_gstate_get_font_matrix (cairo_gstate_t *gstate,
+			       cairo_matrix_t *matrix)
+{
+    *matrix = gstate->font_matrix;
+}
+
+void
+_cairo_gstate_set_font_options (cairo_gstate_t             *gstate,
+				const cairo_font_options_t *options)
+{
+    if (memcmp (options, &gstate->font_options, sizeof (cairo_font_options_t)) == 0)
+	return;
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    _cairo_font_options_init_copy (&gstate->font_options, options);
+}
+
+void
+_cairo_gstate_get_font_options (cairo_gstate_t       *gstate,
+				cairo_font_options_t *options)
+{
+    *options = gstate->font_options;
+}
+
+cairo_status_t
+_cairo_gstate_get_font_face (cairo_gstate_t     *gstate,
+			     cairo_font_face_t **font_face)
+{
+    cairo_status_t status;
+
+    status = _cairo_gstate_ensure_font_face (gstate);
+    if (unlikely (status))
+	return status;
+
+    *font_face = gstate->font_face;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_get_scaled_font (cairo_gstate_t       *gstate,
+			       cairo_scaled_font_t **scaled_font)
+{
+    cairo_status_t status;
+
+    status = _cairo_gstate_ensure_scaled_font (gstate);
+    if (unlikely (status))
+	return status;
+
+    *scaled_font = gstate->scaled_font;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Like everything else in this file, fonts involve Too Many Coordinate Spaces;
+ * it is easy to get confused about what's going on.
+ *
+ * The user's view
+ * ---------------
+ *
+ * Users ask for things in user space. When cairo starts, a user space unit
+ * is about 1/96 inch, which is similar to (but importantly different from)
+ * the normal "point" units most users think in terms of. When a user
+ * selects a font, its scale is set to "one user unit". The user can then
+ * independently scale the user coordinate system *or* the font matrix, in
+ * order to adjust the rendered size of the font.
+ *
+ * Metrics are returned in user space, whether they are obtained from
+ * the currently selected font in a  #cairo_t or from a #cairo_scaled_font_t
+ * which is a font specialized to a particular scale matrix, CTM, and target
+ * surface.
+ *
+ * The font's view
+ * ---------------
+ *
+ * Fonts are designed and stored (in say .ttf files) in "font space", which
+ * describes an "EM Square" (a design tile) and has some abstract number
+ * such as 1000, 1024, or 2048 units per "EM". This is basically an
+ * uninteresting space for us, but we need to remember that it exists.
+ *
+ * Font resources (from libraries or operating systems) render themselves
+ * to a particular device. Since they do not want to make most programmers
+ * worry about the font design space, the scaling API is simplified to
+ * involve just telling the font the required pixel size of the EM square
+ * (that is, in device space).
+ *
+ *
+ * Cairo's gstate view
+ * -------------------
+ *
+ * In addition to the CTM and CTM inverse, we keep a matrix in the gstate
+ * called the "font matrix" which describes the user's most recent
+ * font-scaling or font-transforming request. This is kept in terms of an
+ * abstract scale factor, composed with the CTM and used to set the font's
+ * pixel size. So if the user asks to "scale the font by 12", the matrix
+ * is:
+ *
+ *   [ 12.0, 0.0, 0.0, 12.0, 0.0, 0.0 ]
+ *
+ * It is an affine matrix, like all cairo matrices, where its tx and ty
+ * components are used to "nudging" fonts around and are handled in gstate
+ * and then ignored by the "scaled-font" layer.
+ *
+ * In order to perform any action on a font, we must build an object
+ * called a #cairo_font_scale_t; this contains the central 2x2 matrix
+ * resulting from "font matrix * CTM" (sans the font matrix translation
+ * components as stated in the previous paragraph).
+ *
+ * We pass this to the font when making requests of it, which causes it to
+ * reply for a particular [user request, device] combination, under the CTM
+ * (to accommodate the "zoom in" == "bigger fonts" issue above).
+ *
+ * The other terms in our communication with the font are therefore in
+ * device space. When we ask it to perform text->glyph conversion, it will
+ * produce a glyph string in device space. Glyph vectors we pass to it for
+ * measuring or rendering should be in device space. The metrics which we
+ * get back from the font will be in device space. The contents of the
+ * global glyph image cache will be in device space.
+ *
+ *
+ * Cairo's public view
+ * -------------------
+ *
+ * Since the values entering and leaving via public API calls are in user
+ * space, the gstate functions typically need to multiply arguments by the
+ * CTM (for user-input glyph vectors), and return values by the CTM inverse
+ * (for font responses such as metrics or glyph vectors).
+ *
+ */
+
+static cairo_status_t
+_cairo_gstate_ensure_font_face (cairo_gstate_t *gstate)
+{
+    cairo_font_face_t *font_face;
+
+    if (gstate->font_face != NULL)
+	return gstate->font_face->status;
+
+
+    font_face = cairo_toy_font_face_create (CAIRO_FONT_FAMILY_DEFAULT,
+					    CAIRO_FONT_SLANT_DEFAULT,
+					    CAIRO_FONT_WEIGHT_DEFAULT);
+    if (font_face->status)
+	return font_face->status;
+
+    gstate->font_face = font_face;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_gstate_ensure_scaled_font (cairo_gstate_t *gstate)
+{
+    cairo_status_t status;
+    cairo_font_options_t options;
+    cairo_scaled_font_t *scaled_font;
+    cairo_matrix_t font_ctm;
+
+    if (gstate->scaled_font != NULL)
+	return gstate->scaled_font->status;
+
+    status = _cairo_gstate_ensure_font_face (gstate);
+    if (unlikely (status))
+	return status;
+
+    cairo_surface_get_font_options (gstate->target, &options);
+    cairo_font_options_merge (&options, &gstate->font_options);
+
+    cairo_matrix_multiply (&font_ctm,
+			   &gstate->ctm,
+			   &gstate->target->device_transform);
+
+    scaled_font = cairo_scaled_font_create (gstate->font_face,
+				            &gstate->font_matrix,
+					    &font_ctm,
+					    &options);
+
+    status = cairo_scaled_font_status (scaled_font);
+    if (unlikely (status))
+	return status;
+
+    gstate->scaled_font = scaled_font;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_get_font_extents (cairo_gstate_t *gstate,
+				cairo_font_extents_t *extents)
+{
+    cairo_status_t status = _cairo_gstate_ensure_scaled_font (gstate);
+    if (unlikely (status))
+	return status;
+
+    cairo_scaled_font_extents (gstate->scaled_font, extents);
+
+    return cairo_scaled_font_status (gstate->scaled_font);
+}
+
+cairo_status_t
+_cairo_gstate_set_font_face (cairo_gstate_t    *gstate,
+			     cairo_font_face_t *font_face)
+{
+    if (font_face && font_face->status)
+	return _cairo_error (font_face->status);
+
+    if (font_face == gstate->font_face)
+	return CAIRO_STATUS_SUCCESS;
+
+    cairo_font_face_destroy (gstate->font_face);
+    gstate->font_face = cairo_font_face_reference (font_face);
+
+    _cairo_gstate_unset_scaled_font (gstate);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_gstate_glyph_extents (cairo_gstate_t *gstate,
+			     const cairo_glyph_t *glyphs,
+			     int num_glyphs,
+			     cairo_text_extents_t *extents)
+{
+    cairo_status_t status;
+
+    status = _cairo_gstate_ensure_scaled_font (gstate);
+    if (unlikely (status))
+	return status;
+
+    cairo_scaled_font_glyph_extents (gstate->scaled_font,
+				     glyphs, num_glyphs,
+				     extents);
+
+    return cairo_scaled_font_status (gstate->scaled_font);
+}
+
+cairo_status_t
+_cairo_gstate_show_text_glyphs (cairo_gstate_t		   *gstate,
+				const cairo_glyph_t	   *glyphs,
+				int			    num_glyphs,
+				cairo_glyph_text_info_t    *info)
+{
+    cairo_glyph_t stack_transformed_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)];
+    cairo_text_cluster_t stack_transformed_clusters[CAIRO_STACK_ARRAY_LENGTH (cairo_text_cluster_t)];
+    cairo_pattern_union_t source_pattern;
+    cairo_glyph_t *transformed_glyphs;
+    const cairo_pattern_t *pattern;
+    cairo_text_cluster_t *transformed_clusters;
+    cairo_operator_t op;
+    cairo_status_t status;
+
+    status = _cairo_gstate_get_pattern_status (gstate->source);
+    if (unlikely (status))
+	return status;
+
+    if (gstate->op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_clip_is_all_clipped (gstate->clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_gstate_ensure_scaled_font (gstate);
+    if (unlikely (status))
+	return status;
+
+    transformed_glyphs = stack_transformed_glyphs;
+    transformed_clusters = stack_transformed_clusters;
+
+    if (num_glyphs > ARRAY_LENGTH (stack_transformed_glyphs)) {
+	transformed_glyphs = cairo_glyph_allocate (num_glyphs);
+	if (unlikely (transformed_glyphs == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    if (info != NULL) {
+	if (info->num_clusters > ARRAY_LENGTH (stack_transformed_clusters)) {
+	    transformed_clusters = cairo_text_cluster_allocate (info->num_clusters);
+	    if (unlikely (transformed_clusters == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto CLEANUP_GLYPHS;
+	    }
+	}
+
+	_cairo_gstate_transform_glyphs_to_backend (gstate,
+						   glyphs, num_glyphs,
+						   info->clusters,
+						   info->num_clusters,
+						   info->cluster_flags,
+						   transformed_glyphs,
+						   &num_glyphs,
+						   transformed_clusters);
+    } else {
+	_cairo_gstate_transform_glyphs_to_backend (gstate,
+						   glyphs, num_glyphs,
+						   NULL, 0, 0,
+						   transformed_glyphs,
+						   &num_glyphs,
+						   NULL);
+    }
+
+    if (num_glyphs == 0)
+	goto CLEANUP_GLYPHS;
+
+    op = _reduce_op (gstate);
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	pattern = &_cairo_pattern_clear.base;
+    } else {
+	_cairo_gstate_copy_transformed_source (gstate, &source_pattern.base);
+	pattern = &source_pattern.base;
+    }
+
+    /* For really huge font sizes, we can just do path;fill instead of
+     * show_glyphs, as show_glyphs would put excess pressure on the cache,
+     * and moreover, not all components below us correctly handle huge font
+     * sizes.  I wanted to set the limit at 256.  But alas, seems like cairo's
+     * rasterizer is something like ten times slower than freetype's for huge
+     * sizes.  So, no win just yet.  For now, do it for insanely-huge sizes,
+     * just to make sure we don't make anyone unhappy.  When we get a really
+     * fast rasterizer in cairo, we may want to readjust this.
+     *
+     * Needless to say, do this only if show_text_glyphs is not available. */
+    if (cairo_surface_has_show_text_glyphs (gstate->target) ||
+	_cairo_scaled_font_get_max_scale (gstate->scaled_font) <= 10240)
+    {
+
+	if (info != NULL) {
+	    status = _cairo_surface_show_text_glyphs (gstate->target, op, pattern,
+						      info->utf8, info->utf8_len,
+						      transformed_glyphs, num_glyphs,
+						      transformed_clusters, info->num_clusters,
+						      info->cluster_flags,
+						      gstate->scaled_font,
+						      gstate->clip);
+	} else {
+	    status = _cairo_surface_show_text_glyphs (gstate->target, op, pattern,
+						      NULL, 0,
+						      transformed_glyphs, num_glyphs,
+						      NULL, 0, 0,
+						      gstate->scaled_font,
+						      gstate->clip);
+	}
+    }
+    else
+    {
+	cairo_path_fixed_t path;
+
+	_cairo_path_fixed_init (&path);
+
+	status = _cairo_scaled_font_glyph_path (gstate->scaled_font,
+						transformed_glyphs, num_glyphs,
+						&path);
+
+	if (status == CAIRO_STATUS_SUCCESS) {
+	    status = _cairo_surface_fill (gstate->target, op, pattern,
+					  &path,
+					  CAIRO_FILL_RULE_WINDING,
+					  gstate->tolerance,
+					  gstate->scaled_font->options.antialias,
+					  gstate->clip);
+	}
+
+	_cairo_path_fixed_fini (&path);
+    }
+
+CLEANUP_GLYPHS:
+    if (transformed_glyphs != stack_transformed_glyphs)
+      cairo_glyph_free (transformed_glyphs);
+    if (transformed_clusters != stack_transformed_clusters)
+      cairo_text_cluster_free (transformed_clusters);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gstate_glyph_path (cairo_gstate_t      *gstate,
+			  const cairo_glyph_t *glyphs,
+			  int		       num_glyphs,
+			  cairo_path_fixed_t  *path)
+{
+    cairo_glyph_t stack_transformed_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)];
+    cairo_glyph_t *transformed_glyphs;
+    cairo_status_t status;
+
+    status = _cairo_gstate_ensure_scaled_font (gstate);
+    if (unlikely (status))
+	return status;
+
+    if (num_glyphs < ARRAY_LENGTH (stack_transformed_glyphs)) {
+	transformed_glyphs = stack_transformed_glyphs;
+    } else {
+	transformed_glyphs = cairo_glyph_allocate (num_glyphs);
+	if (unlikely (transformed_glyphs == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_gstate_transform_glyphs_to_backend (gstate,
+					       glyphs, num_glyphs,
+					       NULL, 0, 0,
+					       transformed_glyphs,
+					       &num_glyphs, NULL);
+
+    status = _cairo_scaled_font_glyph_path (gstate->scaled_font,
+					    transformed_glyphs, num_glyphs,
+					    path);
+
+    if (transformed_glyphs != stack_transformed_glyphs)
+      cairo_glyph_free (transformed_glyphs);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_gstate_set_antialias (cairo_gstate_t *gstate,
+			     cairo_antialias_t antialias)
+{
+    gstate->antialias = antialias;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_antialias_t
+_cairo_gstate_get_antialias (cairo_gstate_t *gstate)
+{
+    return gstate->antialias;
+}
+
+/**
+ * _cairo_gstate_transform_glyphs_to_backend:
+ * @gstate: a #cairo_gstate_t
+ * @glyphs: the array of #cairo_glyph_t objects to be transformed
+ * @num_glyphs: the number of elements in @glyphs
+ * @transformed_glyphs: a pre-allocated array of at least @num_glyphs
+ * #cairo_glyph_t objects
+ * @num_transformed_glyphs: the number of elements in @transformed_glyphs
+ * after dropping out of bounds glyphs, or %NULL if glyphs shouldn't be
+ * dropped
+ *
+ * Transform an array of glyphs to backend space by first adding the offset
+ * of the font matrix, then transforming from user space to backend space.
+ * The result of the transformation is placed in @transformed_glyphs.
+ *
+ * This also uses information from the scaled font and the surface to
+ * cull/drop glyphs that will not be visible.
+ **/
+static void
+_cairo_gstate_transform_glyphs_to_backend (cairo_gstate_t	*gstate,
+                                           const cairo_glyph_t	*glyphs,
+                                           int			 num_glyphs,
+					   const cairo_text_cluster_t	*clusters,
+					   int			 num_clusters,
+					   cairo_text_cluster_flags_t cluster_flags,
+                                           cairo_glyph_t	*transformed_glyphs,
+					   int			*num_transformed_glyphs,
+					   cairo_text_cluster_t *transformed_clusters)
+{
+    cairo_rectangle_int_t surface_extents;
+    cairo_matrix_t *ctm = &gstate->ctm;
+    cairo_matrix_t *font_matrix = &gstate->font_matrix;
+    cairo_matrix_t *device_transform = &gstate->target->device_transform;
+    cairo_bool_t drop = FALSE;
+    double x1 = 0, x2 = 0, y1 = 0, y2 = 0;
+    int i, j, k;
+
+    drop = TRUE;
+    if (! _cairo_gstate_int_clip_extents (gstate, &surface_extents)) {
+	drop = FALSE; /* unbounded surface */
+    } else {
+	double scale10 = 10 * _cairo_scaled_font_get_max_scale (gstate->scaled_font);
+	if (surface_extents.width == 0 || surface_extents.height == 0) {
+	  /* No visible area.  Don't draw anything */
+	  *num_transformed_glyphs = 0;
+	  return;
+	}
+	/* XXX We currently drop any glyphs that have their position outside
+	 * of the surface boundaries by a safety margin depending on the
+	 * font scale.  This however can fail in extreme cases where the
+	 * font has really long swashes for example...  We can correctly
+	 * handle that by looking the glyph up and using its device bbox
+	 * to device if it's going to be visible, but I'm not inclined to
+	 * do that now.
+	 */
+	x1 = surface_extents.x - scale10;
+	y1 = surface_extents.y - scale10;
+	x2 = surface_extents.x + (int) surface_extents.width  + scale10;
+	y2 = surface_extents.y + (int) surface_extents.height + scale10;
+    }
+
+    if (!drop)
+	*num_transformed_glyphs = num_glyphs;
+
+#define KEEP_GLYPH(glyph) (x1 <= glyph.x && glyph.x <= x2 && y1 <= glyph.y && glyph.y <= y2)
+
+    j = 0;
+    if (_cairo_matrix_is_identity (ctm) &&
+        _cairo_matrix_is_identity (device_transform) &&
+	font_matrix->x0 == 0 && font_matrix->y0 == 0)
+    {
+	if (! drop) {
+	    memcpy (transformed_glyphs, glyphs,
+		    num_glyphs * sizeof (cairo_glyph_t));
+	    memcpy (transformed_clusters, clusters,
+		    num_clusters * sizeof (cairo_text_cluster_t));
+	    j = num_glyphs;
+	} else if (num_clusters == 0) {
+	    for (i = 0; i < num_glyphs; i++) {
+		transformed_glyphs[j].index = glyphs[i].index;
+		transformed_glyphs[j].x = glyphs[i].x;
+		transformed_glyphs[j].y = glyphs[i].y;
+		if (KEEP_GLYPH (transformed_glyphs[j]))
+		    j++;
+	    }
+	} else {
+	    const cairo_glyph_t *cur_glyph;
+
+	    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+		cur_glyph = glyphs + num_glyphs - 1;
+	    else
+		cur_glyph = glyphs;
+
+	    for (i = 0; i < num_clusters; i++) {
+		cairo_bool_t cluster_visible = FALSE;
+
+		for (k = 0; k < clusters[i].num_glyphs; k++) {
+		    transformed_glyphs[j+k].index = cur_glyph->index;
+		    transformed_glyphs[j+k].x = cur_glyph->x;
+		    transformed_glyphs[j+k].y = cur_glyph->y;
+		    if (KEEP_GLYPH (transformed_glyphs[j+k]))
+			cluster_visible = TRUE;
+
+		    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+			cur_glyph--;
+		    else
+			cur_glyph++;
+		}
+
+		transformed_clusters[i] = clusters[i];
+		if (cluster_visible)
+		    j += k;
+		else
+		    transformed_clusters[i].num_glyphs = 0;
+	    }
+	}
+    }
+    else if (_cairo_matrix_is_translation (ctm) &&
+             _cairo_matrix_is_translation (device_transform))
+    {
+        double tx = font_matrix->x0 + ctm->x0 + device_transform->x0;
+        double ty = font_matrix->y0 + ctm->y0 + device_transform->y0;
+
+	if (! drop || num_clusters == 0) {
+	    for (i = 0; i < num_glyphs; i++) {
+		transformed_glyphs[j].index = glyphs[i].index;
+		transformed_glyphs[j].x = glyphs[i].x + tx;
+		transformed_glyphs[j].y = glyphs[i].y + ty;
+		if (!drop || KEEP_GLYPH (transformed_glyphs[j]))
+		    j++;
+	    }
+	    memcpy (transformed_clusters, clusters,
+		    num_clusters * sizeof (cairo_text_cluster_t));
+	} else {
+	    const cairo_glyph_t *cur_glyph;
+
+	    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+		cur_glyph = glyphs + num_glyphs - 1;
+	    else
+		cur_glyph = glyphs;
+
+	    for (i = 0; i < num_clusters; i++) {
+		cairo_bool_t cluster_visible = FALSE;
+
+		for (k = 0; k < clusters[i].num_glyphs; k++) {
+		    transformed_glyphs[j+k].index = cur_glyph->index;
+		    transformed_glyphs[j+k].x = cur_glyph->x + tx;
+		    transformed_glyphs[j+k].y = cur_glyph->y + ty;
+		    if (KEEP_GLYPH (transformed_glyphs[j+k]))
+			cluster_visible = TRUE;
+
+		    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+			cur_glyph--;
+		    else
+			cur_glyph++;
+		}
+
+		transformed_clusters[i] = clusters[i];
+		if (cluster_visible)
+		    j += k;
+		else
+		    transformed_clusters[i].num_glyphs = 0;
+	    }
+	}
+    }
+    else
+    {
+        cairo_matrix_t aggregate_transform;
+
+        cairo_matrix_init_translate (&aggregate_transform,
+                                     gstate->font_matrix.x0,
+                                     gstate->font_matrix.y0);
+        cairo_matrix_multiply (&aggregate_transform,
+                               &aggregate_transform, ctm);
+        cairo_matrix_multiply (&aggregate_transform,
+                               &aggregate_transform, device_transform);
+
+	if (! drop || num_clusters == 0) {
+	    for (i = 0; i < num_glyphs; i++) {
+		transformed_glyphs[j] = glyphs[i];
+		cairo_matrix_transform_point (&aggregate_transform,
+					      &transformed_glyphs[j].x,
+					      &transformed_glyphs[j].y);
+		if (! drop || KEEP_GLYPH (transformed_glyphs[j]))
+		    j++;
+	    }
+	    memcpy (transformed_clusters, clusters,
+		    num_clusters * sizeof (cairo_text_cluster_t));
+	} else {
+	    const cairo_glyph_t *cur_glyph;
+
+	    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+		cur_glyph = glyphs + num_glyphs - 1;
+	    else
+		cur_glyph = glyphs;
+
+	    for (i = 0; i < num_clusters; i++) {
+		cairo_bool_t cluster_visible = FALSE;
+		for (k = 0; k < clusters[i].num_glyphs; k++) {
+		    transformed_glyphs[j+k] = *cur_glyph;
+		    cairo_matrix_transform_point (&aggregate_transform,
+						  &transformed_glyphs[j+k].x,
+						  &transformed_glyphs[j+k].y);
+		    if (KEEP_GLYPH (transformed_glyphs[j+k]))
+			cluster_visible = TRUE;
+
+		    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+			cur_glyph--;
+		    else
+			cur_glyph++;
+		}
+
+		transformed_clusters[i] = clusters[i];
+		if (cluster_visible)
+		    j += k;
+		else
+		    transformed_clusters[i].num_glyphs = 0;
+	    }
+	}
+    }
+    *num_transformed_glyphs = j;
+
+    if (num_clusters != 0 && cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD) {
+	for (i = 0; i < --j; i++) {
+	    cairo_glyph_t tmp;
+
+	    tmp = transformed_glyphs[i];
+	    transformed_glyphs[i] = transformed_glyphs[j];
+	    transformed_glyphs[j] = tmp;
+	}
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-hash-private.h b/libs/cairo-1.16.0/src/cairo-hash-private.h
new file mode 100644
index 0000000..30e51ff
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-hash-private.h
@@ -0,0 +1,87 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc.
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *	Graydon Hoare <graydon@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_HASH_PRIVATE_H
+#define CAIRO_HASH_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+
+/* XXX: I'd like this file to be self-contained in terms of
+ * includeability, but that's not really possible with the current
+ * monolithic cairoint.h. So, for now, just include cairoint.h instead
+ * if you want to include this file. */
+
+typedef cairo_bool_t
+(*cairo_hash_keys_equal_func_t) (const void *key_a, const void *key_b);
+
+typedef cairo_bool_t
+(*cairo_hash_predicate_func_t) (const void *entry);
+
+typedef void
+(*cairo_hash_callback_func_t) (void *entry,
+			       void *closure);
+
+cairo_private cairo_hash_table_t *
+_cairo_hash_table_create (cairo_hash_keys_equal_func_t keys_equal);
+
+cairo_private void
+_cairo_hash_table_destroy (cairo_hash_table_t *hash_table);
+
+cairo_private void *
+_cairo_hash_table_lookup (cairo_hash_table_t  *hash_table,
+			  cairo_hash_entry_t  *key);
+
+cairo_private void *
+_cairo_hash_table_random_entry (cairo_hash_table_t	   *hash_table,
+				cairo_hash_predicate_func_t predicate);
+
+cairo_private cairo_status_t
+_cairo_hash_table_insert (cairo_hash_table_t *hash_table,
+			  cairo_hash_entry_t *entry);
+
+cairo_private void
+_cairo_hash_table_remove (cairo_hash_table_t *hash_table,
+			  cairo_hash_entry_t *key);
+
+cairo_private void
+_cairo_hash_table_foreach (cairo_hash_table_t	      *hash_table,
+			   cairo_hash_callback_func_t  hash_callback,
+			   void			      *closure);
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-hash.c b/libs/cairo-1.16.0/src/cairo-hash.c
new file mode 100644
index 0000000..5a78990
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-hash.c
@@ -0,0 +1,578 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc.
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *	Graydon Hoare <graydon@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+/*
+ * An entry can be in one of three states:
+ *
+ * FREE: Entry has never been used, terminates all searches.
+ *       Appears in the table as a %NULL pointer.
+ *
+ * DEAD: Entry had been live in the past. A dead entry can be reused
+ *       but does not terminate a search for an exact entry.
+ *       Appears in the table as a pointer to DEAD_ENTRY.
+ *
+ * LIVE: Entry is currently being used.
+ *       Appears in the table as any non-%NULL, non-DEAD_ENTRY pointer.
+ */
+
+#define DEAD_ENTRY ((cairo_hash_entry_t *) 0x1)
+
+#define ENTRY_IS_FREE(entry) ((entry) == NULL)
+#define ENTRY_IS_DEAD(entry) ((entry) == DEAD_ENTRY)
+#define ENTRY_IS_LIVE(entry) ((entry) >  DEAD_ENTRY)
+
+/*
+ * This table is open-addressed with double hashing. Each table size
+ * is a prime and it makes for the "first" hash modulus; a second
+ * prime (2 less than the first prime) serves as the "second" hash
+ * modulus, which is smaller and thus guarantees a complete
+ * permutation of table indices.
+ *
+ * Hash tables are rehashed in order to keep between 12.5% and 50%
+ * entries in the hash table alive and at least 25% free. When table
+ * size is changed, the new table has about 25% live elements.
+ *
+ * The free entries guarantee an expected constant-time lookup.
+ * Doubling/halving the table in the described fashion guarantees
+ * amortized O(1) insertion/removal.
+ *
+ * This structure, and accompanying table, is borrowed/modified from the
+ * file xserver/render/glyph.c in the freedesktop.org x server, with
+ * permission (and suggested modification of doubling sizes) by Keith
+ * Packard.
+ */
+
+static const unsigned long hash_table_sizes[] = {
+    43,
+    73,
+    151,
+    283,
+    571,
+    1153,
+    2269,
+    4519,
+    9013,
+    18043,
+    36109,
+    72091,
+    144409,
+    288361,
+    576883,
+    1153459,
+    2307163,
+    4613893,
+    9227641,
+    18455029,
+    36911011,
+    73819861,
+    147639589,
+    295279081,
+    590559793
+};
+
+struct _cairo_hash_table {
+    cairo_hash_keys_equal_func_t keys_equal;
+
+    cairo_hash_entry_t *cache[32];
+
+    const unsigned long *table_size;
+    cairo_hash_entry_t **entries;
+
+    unsigned long live_entries;
+    unsigned long free_entries;
+    unsigned long iterating;   /* Iterating, no insert, no resize */
+};
+
+/**
+ * _cairo_hash_table_uid_keys_equal:
+ * @key_a: the first key to be compared
+ * @key_b: the second key to be compared
+ *
+ * Provides a #cairo_hash_keys_equal_func_t which always returns
+ * %TRUE. This is useful to create hash tables using keys whose hash
+ * completely describes the key, because in this special case
+ * comparing the hashes is sufficient to guarantee that the keys are
+ * equal.
+ *
+ * Return value: %TRUE.
+ **/
+static cairo_bool_t
+_cairo_hash_table_uid_keys_equal (const void *key_a, const void *key_b)
+{
+    return TRUE;
+}
+
+/**
+ * _cairo_hash_table_create:
+ * @keys_equal: a function to return %TRUE if two keys are equal
+ *
+ * Creates a new hash table which will use the keys_equal() function
+ * to compare hash keys. Data is provided to the hash table in the
+ * form of user-derived versions of #cairo_hash_entry_t. A hash entry
+ * must be able to hold both a key (including a hash code) and a
+ * value. Sometimes only the key will be necessary, (as in
+ * _cairo_hash_table_remove), and other times both a key and a value
+ * will be necessary, (as in _cairo_hash_table_insert).
+ *
+ * If @keys_equal is %NULL, two keys will be considered equal if and
+ * only if their hashes are equal.
+ *
+ * See #cairo_hash_entry_t for more details.
+ *
+ * Return value: the new hash table or %NULL if out of memory.
+ **/
+cairo_hash_table_t *
+_cairo_hash_table_create (cairo_hash_keys_equal_func_t keys_equal)
+{
+    cairo_hash_table_t *hash_table;
+
+    hash_table = _cairo_malloc (sizeof (cairo_hash_table_t));
+    if (unlikely (hash_table == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    if (keys_equal == NULL)
+	hash_table->keys_equal = _cairo_hash_table_uid_keys_equal;
+    else
+	hash_table->keys_equal = keys_equal;
+
+    memset (&hash_table->cache, 0, sizeof (hash_table->cache));
+    hash_table->table_size = &hash_table_sizes[0];
+
+    hash_table->entries = calloc (*hash_table->table_size,
+				  sizeof (cairo_hash_entry_t *));
+    if (unlikely (hash_table->entries == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	free (hash_table);
+	return NULL;
+    }
+
+    hash_table->live_entries = 0;
+    hash_table->free_entries = *hash_table->table_size;
+    hash_table->iterating = 0;
+
+    return hash_table;
+}
+
+/**
+ * _cairo_hash_table_destroy:
+ * @hash_table: an empty hash table to destroy
+ *
+ * Immediately destroys the given hash table, freeing all resources
+ * associated with it.
+ *
+ * WARNING: The hash_table must have no live entries in it before
+ * _cairo_hash_table_destroy is called. It is a fatal error otherwise,
+ * and this function will halt. The rationale for this behavior is to
+ * avoid memory leaks and to avoid needless complication of the API
+ * with destroy notifiy callbacks.
+ *
+ * WARNING: The hash_table must have no running iterators in it when
+ * _cairo_hash_table_destroy is called. It is a fatal error otherwise,
+ * and this function will halt.
+ **/
+void
+_cairo_hash_table_destroy (cairo_hash_table_t *hash_table)
+{
+    /* The hash table must be empty. Otherwise, halt. */
+    assert (hash_table->live_entries == 0);
+    /* No iterators can be running. Otherwise, halt. */
+    assert (hash_table->iterating == 0);
+
+    free (hash_table->entries);
+    free (hash_table);
+}
+
+static cairo_hash_entry_t **
+_cairo_hash_table_lookup_unique_key (cairo_hash_table_t *hash_table,
+				     cairo_hash_entry_t *key)
+{
+    unsigned long table_size, i, idx, step;
+    cairo_hash_entry_t **entry;
+
+    table_size = *hash_table->table_size;
+    idx = key->hash % table_size;
+
+    entry = &hash_table->entries[idx];
+    if (! ENTRY_IS_LIVE (*entry))
+	return entry;
+
+    i = 1;
+    step = 1 + key->hash % (table_size - 2);
+    do {
+	idx += step;
+	if (idx >= table_size)
+	    idx -= table_size;
+
+	entry = &hash_table->entries[idx];
+	if (! ENTRY_IS_LIVE (*entry))
+	    return entry;
+    } while (++i < table_size);
+
+    ASSERT_NOT_REACHED;
+    return NULL;
+}
+
+/**
+ * _cairo_hash_table_manage:
+ * @hash_table: a hash table
+ *
+ * Resize the hash table if the number of entries has gotten much
+ * bigger or smaller than the ideal number of entries for the current
+ * size and guarantee some free entries to be used as lookup
+ * termination points.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if out of memory.
+ **/
+static cairo_status_t
+_cairo_hash_table_manage (cairo_hash_table_t *hash_table)
+{
+    cairo_hash_table_t tmp;
+    unsigned long new_size, i;
+
+    /* Keep between 12.5% and 50% entries in the hash table alive and
+     * at least 25% free. */
+    unsigned long live_high = *hash_table->table_size >> 1;
+    unsigned long live_low = live_high >> 2;
+    unsigned long free_low = live_high >> 1;
+
+    tmp = *hash_table;
+
+    if (hash_table->live_entries > live_high)
+    {
+	tmp.table_size = hash_table->table_size + 1;
+	/* This code is being abused if we can't make a table big enough. */
+	assert (tmp.table_size - hash_table_sizes <
+		ARRAY_LENGTH (hash_table_sizes));
+    }
+    else if (hash_table->live_entries < live_low)
+    {
+	/* Can't shrink if we're at the smallest size */
+	if (hash_table->table_size == &hash_table_sizes[0])
+	    tmp.table_size = hash_table->table_size;
+	else
+	    tmp.table_size = hash_table->table_size - 1;
+    }
+
+    if (tmp.table_size == hash_table->table_size &&
+	hash_table->free_entries > free_low)
+    {
+	/* The number of live entries is within the desired bounds
+	 * (we're not going to resize the table) and we have enough
+	 * free entries. Do nothing. */
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    new_size = *tmp.table_size;
+    tmp.entries = calloc (new_size, sizeof (cairo_hash_entry_t*));
+    if (unlikely (tmp.entries == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    for (i = 0; i < *hash_table->table_size; ++i) {
+	if (ENTRY_IS_LIVE (hash_table->entries[i])) {
+	    *_cairo_hash_table_lookup_unique_key (&tmp, hash_table->entries[i])
+		= hash_table->entries[i];
+	}
+    }
+
+    free (hash_table->entries);
+    hash_table->entries = tmp.entries;
+    hash_table->table_size = tmp.table_size;
+    hash_table->free_entries = new_size - hash_table->live_entries;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_hash_table_lookup:
+ * @hash_table: a hash table
+ * @key: the key of interest
+ *
+ * Performs a lookup in @hash_table looking for an entry which has a
+ * key that matches @key, (as determined by the keys_equal() function
+ * passed to _cairo_hash_table_create).
+ *
+ * Return value: the matching entry, of %NULL if no match was found.
+ **/
+void *
+_cairo_hash_table_lookup (cairo_hash_table_t *hash_table,
+			  cairo_hash_entry_t *key)
+{
+    cairo_hash_entry_t *entry;
+    unsigned long table_size, i, idx, step;
+    unsigned long hash = key->hash;
+
+    entry = hash_table->cache[hash & 31];
+    if (entry && entry->hash == hash && hash_table->keys_equal (key, entry))
+	return entry;
+
+    table_size = *hash_table->table_size;
+    idx = hash % table_size;
+
+    entry = hash_table->entries[idx];
+    if (ENTRY_IS_LIVE (entry)) {
+	if (entry->hash == hash && hash_table->keys_equal (key, entry))
+		goto insert_cache;
+    } else if (ENTRY_IS_FREE (entry))
+	return NULL;
+
+    i = 1;
+    step = 1 + hash % (table_size - 2);
+    do {
+	idx += step;
+	if (idx >= table_size)
+	    idx -= table_size;
+
+	entry = hash_table->entries[idx];
+	if (ENTRY_IS_LIVE (entry)) {
+	    if (entry->hash == hash && hash_table->keys_equal (key, entry))
+		    goto insert_cache;
+	} else if (ENTRY_IS_FREE (entry))
+	    return NULL;
+    } while (++i < table_size);
+
+    ASSERT_NOT_REACHED;
+    return NULL;
+
+insert_cache:
+    hash_table->cache[hash & 31] = entry;
+    return entry;
+}
+
+/**
+ * _cairo_hash_table_random_entry:
+ * @hash_table: a hash table
+ * @predicate: a predicate function.
+ *
+ * Find a random entry in the hash table satisfying the given
+ * @predicate.
+ *
+ * We use the same algorithm as the lookup algorithm to walk over the
+ * entries in the hash table in a pseudo-random order. Walking
+ * linearly would favor entries following gaps in the hash table. We
+ * could also call rand() repeatedly, which works well for almost-full
+ * tables, but degrades when the table is almost empty, or predicate
+ * returns %TRUE for most entries.
+ *
+ * Return value: a random live entry or %NULL if there are no entries
+ * that match the given predicate. In particular, if predicate is
+ * %NULL, a %NULL return value indicates that the table is empty.
+ **/
+void *
+_cairo_hash_table_random_entry (cairo_hash_table_t	   *hash_table,
+				cairo_hash_predicate_func_t predicate)
+{
+    cairo_hash_entry_t *entry;
+    unsigned long hash;
+    unsigned long table_size, i, idx, step;
+
+    assert (predicate != NULL);
+
+    table_size = *hash_table->table_size;
+    hash = rand ();
+    idx = hash % table_size;
+
+    entry = hash_table->entries[idx];
+    if (ENTRY_IS_LIVE (entry) && predicate (entry))
+	return entry;
+
+    i = 1;
+    step = 1 + hash % (table_size - 2);
+    do {
+	idx += step;
+	if (idx >= table_size)
+	    idx -= table_size;
+
+	entry = hash_table->entries[idx];
+	if (ENTRY_IS_LIVE (entry) && predicate (entry))
+	    return entry;
+    } while (++i < table_size);
+
+    return NULL;
+}
+
+/**
+ * _cairo_hash_table_insert:
+ * @hash_table: a hash table
+ * @key_and_value: an entry to be inserted
+ *
+ * Insert the entry #key_and_value into the hash table.
+ *
+ * WARNING: There must not be an existing entry in the hash table
+ * with a matching key.
+ *
+ * WARNING: It is a fatal error to insert an element while
+ * an iterator is running
+ *
+ * Instead of using insert to replace an entry, consider just editing
+ * the entry obtained with _cairo_hash_table_lookup. Or if absolutely
+ * necessary, use _cairo_hash_table_remove first.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if insufficient memory is available.
+ **/
+cairo_status_t
+_cairo_hash_table_insert (cairo_hash_table_t *hash_table,
+			  cairo_hash_entry_t *key_and_value)
+{
+    cairo_hash_entry_t **entry;
+    cairo_status_t status;
+
+    /* Insert is illegal while an iterator is running. */
+    assert (hash_table->iterating == 0);
+
+    status = _cairo_hash_table_manage (hash_table);
+    if (unlikely (status))
+	return status;
+
+    entry = _cairo_hash_table_lookup_unique_key (hash_table, key_and_value);
+
+    if (ENTRY_IS_FREE (*entry))
+	hash_table->free_entries--;
+
+    *entry = key_and_value;
+    hash_table->cache[key_and_value->hash & 31] = key_and_value;
+    hash_table->live_entries++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_hash_entry_t **
+_cairo_hash_table_lookup_exact_key (cairo_hash_table_t *hash_table,
+				    cairo_hash_entry_t *key)
+{
+    unsigned long table_size, i, idx, step;
+    cairo_hash_entry_t **entry;
+
+    table_size = *hash_table->table_size;
+    idx = key->hash % table_size;
+
+    entry = &hash_table->entries[idx];
+    if (*entry == key)
+	return entry;
+
+    i = 1;
+    step = 1 + key->hash % (table_size - 2);
+    do {
+	idx += step;
+	if (idx >= table_size)
+	    idx -= table_size;
+
+	entry = &hash_table->entries[idx];
+	if (*entry == key)
+	    return entry;
+    } while (++i < table_size);
+
+    ASSERT_NOT_REACHED;
+    return NULL;
+}
+/**
+ * _cairo_hash_table_remove:
+ * @hash_table: a hash table
+ * @key: key of entry to be removed
+ *
+ * Remove an entry from the hash table which points to @key.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful or
+ * %CAIRO_STATUS_NO_MEMORY if out of memory.
+ **/
+void
+_cairo_hash_table_remove (cairo_hash_table_t *hash_table,
+			  cairo_hash_entry_t *key)
+{
+    *_cairo_hash_table_lookup_exact_key (hash_table, key) = DEAD_ENTRY;
+    hash_table->live_entries--;
+    hash_table->cache[key->hash & 31] = NULL;
+
+    /* Check for table resize. Don't do this when iterating as this will
+     * reorder elements of the table and cause the iteration to potentially
+     * skip some elements. */
+    if (hash_table->iterating == 0) {
+	/* This call _can_ fail, but only in failing to allocate new
+	 * memory to shrink the hash table. It does leave the table in a
+	 * consistent state, and we've already succeeded in removing the
+	 * entry, so we don't examine the failure status of this call. */
+	_cairo_hash_table_manage (hash_table);
+    }
+}
+
+/**
+ * _cairo_hash_table_foreach:
+ * @hash_table: a hash table
+ * @hash_callback: function to be called for each live entry
+ * @closure: additional argument to be passed to @hash_callback
+ *
+ * Call @hash_callback for each live entry in the hash table, in a
+ * non-specified order.
+ *
+ * Entries in @hash_table may be removed by code executed from @hash_callback.
+ *
+ * Entries may not be inserted to @hash_table, nor may @hash_table
+ * be destroyed by code executed from @hash_callback. The relevant
+ * functions will halt in these cases.
+ **/
+void
+_cairo_hash_table_foreach (cairo_hash_table_t	      *hash_table,
+			   cairo_hash_callback_func_t  hash_callback,
+			   void			      *closure)
+{
+    unsigned long i;
+    cairo_hash_entry_t *entry;
+
+    /* Mark the table for iteration */
+    ++hash_table->iterating;
+    for (i = 0; i < *hash_table->table_size; i++) {
+	entry = hash_table->entries[i];
+	if (ENTRY_IS_LIVE(entry))
+	    hash_callback (entry, closure);
+    }
+    /* If some elements were deleted during the iteration,
+     * the table may need resizing. Just do this every time
+     * as the check is inexpensive.
+     */
+    if (--hash_table->iterating == 0) {
+	/* Should we fail to shrink the hash table, it is left unaltered,
+	 * and we don't need to propagate the error status. */
+	_cairo_hash_table_manage (hash_table);
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-hull.c b/libs/cairo-1.16.0/src/cairo-hull.c
new file mode 100644
index 0000000..c655933
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-hull.c
@@ -0,0 +1,235 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-slope-private.h"
+
+typedef struct cairo_hull {
+    cairo_point_t point;
+    cairo_slope_t slope;
+    int discard;
+    int id;
+} cairo_hull_t;
+
+static void
+_cairo_hull_init (cairo_hull_t			*hull,
+	          cairo_pen_vertex_t		*vertices,
+		  int				 num_vertices)
+{
+    cairo_point_t *p, *extremum, tmp;
+    int i;
+
+    extremum = &vertices[0].point;
+    for (i = 1; i < num_vertices; i++) {
+	p = &vertices[i].point;
+	if (p->y < extremum->y || (p->y == extremum->y && p->x < extremum->x))
+	    extremum = p;
+    }
+    /* Put the extremal point at the beginning of the array */
+    tmp = *extremum;
+    *extremum = vertices[0].point;
+    vertices[0].point = tmp;
+
+    for (i = 0; i < num_vertices; i++) {
+	hull[i].point = vertices[i].point;
+	_cairo_slope_init (&hull[i].slope, &hull[0].point, &hull[i].point);
+
+        /* give each point a unique id for later comparison */
+        hull[i].id = i;
+
+        /* Don't discard by default */
+        hull[i].discard = 0;
+
+	/* Discard all points coincident with the extremal point */
+	if (i != 0 && hull[i].slope.dx == 0 && hull[i].slope.dy == 0)
+	    hull[i].discard = 1;
+    }
+}
+
+static inline cairo_int64_t
+_slope_length (cairo_slope_t *slope)
+{
+    return _cairo_int64_add (_cairo_int32x32_64_mul (slope->dx, slope->dx),
+			     _cairo_int32x32_64_mul (slope->dy, slope->dy));
+}
+
+static int
+_cairo_hull_vertex_compare (const void *av, const void *bv)
+{
+    cairo_hull_t *a = (cairo_hull_t *) av;
+    cairo_hull_t *b = (cairo_hull_t *) bv;
+    int ret;
+
+    /* Some libraries are reported to actually compare identical
+     * pointers and require the result to be 0. This is the crazy world we
+     * have to live in.
+     */
+    if (a == b)
+	return 0;
+
+    ret = _cairo_slope_compare (&a->slope, &b->slope);
+
+    /*
+     * In the case of two vertices with identical slope from the
+     * extremal point discard the nearer point.
+     */
+    if (ret == 0) {
+	int cmp;
+
+	cmp = _cairo_int64_cmp (_slope_length (&a->slope),
+				_slope_length (&b->slope));
+
+	/*
+	 * Use the points' ids to ensure a well-defined ordering,
+	 * and avoid setting discard on both points.
+	 */
+	if (cmp < 0 || (cmp == 0 && a->id < b->id)) {
+	    a->discard = 1;
+	    ret = -1;
+	} else {
+	    b->discard = 1;
+	    ret = 1;
+	}
+    }
+
+    return ret;
+}
+
+static int
+_cairo_hull_prev_valid (cairo_hull_t *hull, int num_hull, int index)
+{
+    /* hull[0] is always valid, and we never need to wraparound, (if
+     * we are passed an index of 0 here, then the calling loop is just
+     * about to terminate). */
+    if (index == 0)
+	return 0;
+
+    do {
+	index--;
+    } while (hull[index].discard);
+
+    return index;
+}
+
+static int
+_cairo_hull_next_valid (cairo_hull_t *hull, int num_hull, int index)
+{
+    do {
+	index = (index + 1) % num_hull;
+    } while (hull[index].discard);
+
+    return index;
+}
+
+static void
+_cairo_hull_eliminate_concave (cairo_hull_t *hull, int num_hull)
+{
+    int i, j, k;
+    cairo_slope_t slope_ij, slope_jk;
+
+    i = 0;
+    j = _cairo_hull_next_valid (hull, num_hull, i);
+    k = _cairo_hull_next_valid (hull, num_hull, j);
+
+    do {
+	_cairo_slope_init (&slope_ij, &hull[i].point, &hull[j].point);
+	_cairo_slope_init (&slope_jk, &hull[j].point, &hull[k].point);
+
+	/* Is the angle formed by ij and jk concave? */
+	if (_cairo_slope_compare (&slope_ij, &slope_jk) >= 0) {
+	    if (i == k)
+		return;
+	    hull[j].discard = 1;
+	    j = i;
+	    i = _cairo_hull_prev_valid (hull, num_hull, j);
+	} else {
+	    i = j;
+	    j = k;
+	    k = _cairo_hull_next_valid (hull, num_hull, j);
+	}
+    } while (j != 0);
+}
+
+static void
+_cairo_hull_to_pen (cairo_hull_t *hull, cairo_pen_vertex_t *vertices, int *num_vertices)
+{
+    int i, j = 0;
+
+    for (i = 0; i < *num_vertices; i++) {
+	if (hull[i].discard)
+	    continue;
+	vertices[j++].point = hull[i].point;
+    }
+
+    *num_vertices = j;
+}
+
+/* Given a set of vertices, compute the convex hull using the Graham
+   scan algorithm. */
+cairo_status_t
+_cairo_hull_compute (cairo_pen_vertex_t *vertices, int *num_vertices)
+{
+    cairo_hull_t hull_stack[CAIRO_STACK_ARRAY_LENGTH (cairo_hull_t)];
+    cairo_hull_t *hull;
+    int num_hull = *num_vertices;
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (num_hull > ARRAY_LENGTH (hull_stack)) {
+	hull = _cairo_malloc_ab (num_hull, sizeof (cairo_hull_t));
+	if (unlikely (hull == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else {
+	hull = hull_stack;
+    }
+
+    _cairo_hull_init (hull, vertices, num_hull);
+
+    qsort (hull + 1, num_hull - 1,
+	   sizeof (cairo_hull_t), _cairo_hull_vertex_compare);
+
+    _cairo_hull_eliminate_concave (hull, num_hull);
+
+    _cairo_hull_to_pen (hull, vertices, num_vertices);
+
+    if (hull != hull_stack)
+	free (hull);
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-image-compositor.c b/libs/cairo-1.16.0/src/cairo-image-compositor.c
new file mode 100644
index 0000000..bbf4cf2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-compositor.c
@@ -0,0 +1,3163 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ * Copyright © 2009,2010,2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* The primarily reason for keeping a traps-compositor around is
+ * for validating cairo-xlib (which currently also uses traps).
+ */
+
+#include "cairoint.h"
+
+#include "cairo-image-surface-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-spans-compositor-private.h"
+
+#include "cairo-region-private.h"
+#include "cairo-traps-private.h"
+#include "cairo-tristrip-private.h"
+
+#include "cairo-pixman-private.h"
+
+static pixman_image_t *
+to_pixman_image (cairo_surface_t *s)
+{
+    return ((cairo_image_surface_t *)s)->pixman_image;
+}
+
+static cairo_int_status_t
+acquire (void *abstract_dst)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+release (void *abstract_dst)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+set_clip_region (void *_surface,
+		 cairo_region_t *region)
+{
+    cairo_image_surface_t *surface = _surface;
+    pixman_region32_t *rgn = region ? &region->rgn : NULL;
+
+    if (! pixman_image_set_clip_region32 (surface->pixman_image, rgn))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+draw_image_boxes (void *_dst,
+		  cairo_image_surface_t *image,
+		  cairo_boxes_t *boxes,
+		  int dx, int dy)
+{
+    cairo_image_surface_t *dst = _dst;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    TRACE ((stderr, "%s x %d\n", __FUNCTION__, boxes->num_boxes));
+
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    cairo_box_t *b = &chunk->base[i];
+	    int x = _cairo_fixed_integer_part (b->p1.x);
+	    int y = _cairo_fixed_integer_part (b->p1.y);
+	    int w = _cairo_fixed_integer_part (b->p2.x) - x;
+	    int h = _cairo_fixed_integer_part (b->p2.y) - y;
+	    if (dst->pixman_format != image->pixman_format ||
+		! pixman_blt ((uint32_t *)image->data, (uint32_t *)dst->data,
+			      image->stride / sizeof (uint32_t),
+			      dst->stride / sizeof (uint32_t),
+			      PIXMAN_FORMAT_BPP (image->pixman_format),
+			      PIXMAN_FORMAT_BPP (dst->pixman_format),
+			      x + dx, y + dy,
+			      x, y,
+			      w, h))
+	    {
+		pixman_image_composite32 (PIXMAN_OP_SRC,
+					  image->pixman_image, NULL, dst->pixman_image,
+					  x + dx, y + dy,
+					  0, 0,
+					  x, y,
+					  w, h);
+	    }
+	}
+    }
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline uint32_t
+color_to_uint32 (const cairo_color_t *color)
+{
+    return
+        (color->alpha_short >> 8 << 24) |
+        (color->red_short >> 8 << 16)   |
+        (color->green_short & 0xff00)   |
+        (color->blue_short >> 8);
+}
+
+static inline cairo_bool_t
+color_to_pixel (const cairo_color_t	*color,
+                pixman_format_code_t	 format,
+                uint32_t		*pixel)
+{
+    uint32_t c;
+
+    if (!(format == PIXMAN_a8r8g8b8     ||
+          format == PIXMAN_x8r8g8b8     ||
+          format == PIXMAN_a8b8g8r8     ||
+          format == PIXMAN_x8b8g8r8     ||
+          format == PIXMAN_b8g8r8a8     ||
+          format == PIXMAN_b8g8r8x8     ||
+          format == PIXMAN_r5g6b5       ||
+          format == PIXMAN_b5g6r5       ||
+          format == PIXMAN_a8))
+    {
+	return FALSE;
+    }
+
+    c = color_to_uint32 (color);
+
+    if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR) {
+	c = ((c & 0xff000000) >>  0) |
+	    ((c & 0x00ff0000) >> 16) |
+	    ((c & 0x0000ff00) >>  0) |
+	    ((c & 0x000000ff) << 16);
+    }
+
+    if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_BGRA) {
+	c = ((c & 0xff000000) >> 24) |
+	    ((c & 0x00ff0000) >>  8) |
+	    ((c & 0x0000ff00) <<  8) |
+	    ((c & 0x000000ff) << 24);
+    }
+
+    if (format == PIXMAN_a8) {
+	c = c >> 24;
+    } else if (format == PIXMAN_r5g6b5 || format == PIXMAN_b5g6r5) {
+	c = ((((c) >> 3) & 0x001f) |
+	     (((c) >> 5) & 0x07e0) |
+	     (((c) >> 8) & 0xf800));
+    }
+
+    *pixel = c;
+    return TRUE;
+}
+
+static pixman_op_t
+_pixman_operator (cairo_operator_t op)
+{
+    switch ((int) op) {
+    case CAIRO_OPERATOR_CLEAR:
+	return PIXMAN_OP_CLEAR;
+
+    case CAIRO_OPERATOR_SOURCE:
+	return PIXMAN_OP_SRC;
+    case CAIRO_OPERATOR_OVER:
+	return PIXMAN_OP_OVER;
+    case CAIRO_OPERATOR_IN:
+	return PIXMAN_OP_IN;
+    case CAIRO_OPERATOR_OUT:
+	return PIXMAN_OP_OUT;
+    case CAIRO_OPERATOR_ATOP:
+	return PIXMAN_OP_ATOP;
+
+    case CAIRO_OPERATOR_DEST:
+	return PIXMAN_OP_DST;
+    case CAIRO_OPERATOR_DEST_OVER:
+	return PIXMAN_OP_OVER_REVERSE;
+    case CAIRO_OPERATOR_DEST_IN:
+	return PIXMAN_OP_IN_REVERSE;
+    case CAIRO_OPERATOR_DEST_OUT:
+	return PIXMAN_OP_OUT_REVERSE;
+    case CAIRO_OPERATOR_DEST_ATOP:
+	return PIXMAN_OP_ATOP_REVERSE;
+
+    case CAIRO_OPERATOR_XOR:
+	return PIXMAN_OP_XOR;
+    case CAIRO_OPERATOR_ADD:
+	return PIXMAN_OP_ADD;
+    case CAIRO_OPERATOR_SATURATE:
+	return PIXMAN_OP_SATURATE;
+
+    case CAIRO_OPERATOR_MULTIPLY:
+	return PIXMAN_OP_MULTIPLY;
+    case CAIRO_OPERATOR_SCREEN:
+	return PIXMAN_OP_SCREEN;
+    case CAIRO_OPERATOR_OVERLAY:
+	return PIXMAN_OP_OVERLAY;
+    case CAIRO_OPERATOR_DARKEN:
+	return PIXMAN_OP_DARKEN;
+    case CAIRO_OPERATOR_LIGHTEN:
+	return PIXMAN_OP_LIGHTEN;
+    case CAIRO_OPERATOR_COLOR_DODGE:
+	return PIXMAN_OP_COLOR_DODGE;
+    case CAIRO_OPERATOR_COLOR_BURN:
+	return PIXMAN_OP_COLOR_BURN;
+    case CAIRO_OPERATOR_HARD_LIGHT:
+	return PIXMAN_OP_HARD_LIGHT;
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+	return PIXMAN_OP_SOFT_LIGHT;
+    case CAIRO_OPERATOR_DIFFERENCE:
+	return PIXMAN_OP_DIFFERENCE;
+    case CAIRO_OPERATOR_EXCLUSION:
+	return PIXMAN_OP_EXCLUSION;
+    case CAIRO_OPERATOR_HSL_HUE:
+	return PIXMAN_OP_HSL_HUE;
+    case CAIRO_OPERATOR_HSL_SATURATION:
+	return PIXMAN_OP_HSL_SATURATION;
+    case CAIRO_OPERATOR_HSL_COLOR:
+	return PIXMAN_OP_HSL_COLOR;
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return PIXMAN_OP_HSL_LUMINOSITY;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return PIXMAN_OP_OVER;
+    }
+}
+
+static cairo_bool_t
+__fill_reduces_to_source (cairo_operator_t op,
+			  const cairo_color_t *color,
+			  const cairo_image_surface_t *dst)
+{
+    if (op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_CLEAR)
+	return TRUE;
+    if (op == CAIRO_OPERATOR_OVER && CAIRO_COLOR_IS_OPAQUE (color))
+	return TRUE;
+    if (dst->base.is_clear)
+	return op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD;
+
+    return FALSE;
+}
+
+static cairo_bool_t
+fill_reduces_to_source (cairo_operator_t op,
+			const cairo_color_t *color,
+			const cairo_image_surface_t *dst,
+			uint32_t *pixel)
+{
+    if (__fill_reduces_to_source (op, color, dst)) {
+	return color_to_pixel (color, dst->pixman_format, pixel);
+    }
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+fill_rectangles (void			*_dst,
+		 cairo_operator_t	 op,
+		 const cairo_color_t	*color,
+		 cairo_rectangle_int_t	*rects,
+		 int			 num_rects)
+{
+    cairo_image_surface_t *dst = _dst;
+    uint32_t pixel;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (fill_reduces_to_source (op, color, dst, &pixel)) {
+	for (i = 0; i < num_rects; i++) {
+	    pixman_fill ((uint32_t *) dst->data, dst->stride / sizeof (uint32_t),
+			 PIXMAN_FORMAT_BPP (dst->pixman_format),
+			 rects[i].x, rects[i].y,
+			 rects[i].width, rects[i].height,
+			 pixel);
+	}
+    } else {
+	pixman_image_t *src = _pixman_image_for_color (color);
+	if (unlikely (src == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	op = _pixman_operator (op);
+	for (i = 0; i < num_rects; i++) {
+	    pixman_image_composite32 (op,
+				      src, NULL, dst->pixman_image,
+				      0, 0,
+				      0, 0,
+				      rects[i].x, rects[i].y,
+				      rects[i].width, rects[i].height);
+	}
+
+	pixman_image_unref (src);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+fill_boxes (void		*_dst,
+	    cairo_operator_t	 op,
+	    const cairo_color_t	*color,
+	    cairo_boxes_t	*boxes)
+{
+    cairo_image_surface_t *dst = _dst;
+    struct _cairo_boxes_chunk *chunk;
+    uint32_t pixel;
+    int i;
+
+    TRACE ((stderr, "%s x %d\n", __FUNCTION__, boxes->num_boxes));
+
+    if (fill_reduces_to_source (op, color, dst, &pixel)) {
+	for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		int x = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		int y = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		int w = _cairo_fixed_integer_part (chunk->base[i].p2.x) - x;
+		int h = _cairo_fixed_integer_part (chunk->base[i].p2.y) - y;
+		pixman_fill ((uint32_t *) dst->data,
+			     dst->stride / sizeof (uint32_t),
+			     PIXMAN_FORMAT_BPP (dst->pixman_format),
+			     x, y, w, h, pixel);
+	    }
+	}
+    }
+    else
+    {
+	pixman_image_t *src = _pixman_image_for_color (color);
+	if (unlikely (src == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	op = _pixman_operator (op);
+	for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+		pixman_image_composite32 (op,
+					  src, NULL, dst->pixman_image,
+					  0, 0,
+					  0, 0,
+					  x1, y1,
+					  x2-x1, y2-y1);
+	    }
+	}
+
+	pixman_image_unref (src);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite (void			*_dst,
+	   cairo_operator_t	op,
+	   cairo_surface_t	*abstract_src,
+	   cairo_surface_t	*abstract_mask,
+	   int			src_x,
+	   int			src_y,
+	   int			mask_x,
+	   int			mask_y,
+	   int			dst_x,
+	   int			dst_y,
+	   unsigned int		width,
+	   unsigned int		height)
+{
+    cairo_image_source_t *src = (cairo_image_source_t *)abstract_src;
+    cairo_image_source_t *mask = (cairo_image_source_t *)abstract_mask;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (mask) {
+	pixman_image_composite32 (_pixman_operator (op),
+				  src->pixman_image, mask->pixman_image, to_pixman_image (_dst),
+				  src_x, src_y,
+				  mask_x, mask_y,
+				  dst_x, dst_y,
+				  width, height);
+    } else {
+	pixman_image_composite32 (_pixman_operator (op),
+				  src->pixman_image, NULL, to_pixman_image (_dst),
+				  src_x, src_y,
+				  0, 0,
+				  dst_x, dst_y,
+				  width, height);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+lerp (void			*_dst,
+      cairo_surface_t		*abstract_src,
+      cairo_surface_t		*abstract_mask,
+      int			src_x,
+      int			src_y,
+      int			mask_x,
+      int			mask_y,
+      int			dst_x,
+      int			dst_y,
+      unsigned int		width,
+      unsigned int		height)
+{
+    cairo_image_surface_t *dst = _dst;
+    cairo_image_source_t *src = (cairo_image_source_t *)abstract_src;
+    cairo_image_source_t *mask = (cairo_image_source_t *)abstract_mask;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+#if PIXMAN_HAS_OP_LERP
+    pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
+			      src->pixman_image, mask->pixman_image, dst->pixman_image,
+			      src_x,  src_y,
+			      mask_x, mask_y,
+			      dst_x,  dst_y,
+			      width,  height);
+#else
+    /* Punch the clip out of the destination */
+    TRACE ((stderr, "%s - OUT_REVERSE (mask=%d/%p, dst=%d/%p)\n",
+	    __FUNCTION__,
+	    mask->base.unique_id, mask->pixman_image,
+	    dst->base.unique_id, dst->pixman_image));
+    pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+			      mask->pixman_image, NULL, dst->pixman_image,
+			      mask_x, mask_y,
+			      0,      0,
+			      dst_x,  dst_y,
+			      width,  height);
+
+    /* Now add the two results together */
+    TRACE ((stderr, "%s - ADD (src=%d/%p, mask=%d/%p, dst=%d/%p)\n",
+	    __FUNCTION__,
+	    src->base.unique_id, src->pixman_image,
+	    mask->base.unique_id, mask->pixman_image,
+	    dst->base.unique_id, dst->pixman_image));
+    pixman_image_composite32 (PIXMAN_OP_ADD,
+			      src->pixman_image, mask->pixman_image, dst->pixman_image,
+			      src_x,  src_y,
+			      mask_x, mask_y,
+			      dst_x,  dst_y,
+			      width,  height);
+#endif
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_boxes (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 cairo_surface_t	*abstract_mask,
+		 int			src_x,
+		 int			src_y,
+		 int			mask_x,
+		 int			mask_y,
+		 int			dst_x,
+		 int			dst_y,
+		 cairo_boxes_t		*boxes,
+		 const cairo_rectangle_int_t  *extents)
+{
+    pixman_image_t *dst = to_pixman_image (_dst);
+    pixman_image_t *src = ((cairo_image_source_t *)abstract_src)->pixman_image;
+    pixman_image_t *mask = abstract_mask ? ((cairo_image_source_t *)abstract_mask)->pixman_image : NULL;
+    pixman_image_t *free_src = NULL;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    /* XXX consider using a region? saves multiple prepare-composite */
+    TRACE ((stderr, "%s x %d\n", __FUNCTION__, boxes->num_boxes));
+
+    if (((cairo_surface_t *)_dst)->is_clear &&
+	(op == CAIRO_OPERATOR_SOURCE ||
+	 op == CAIRO_OPERATOR_OVER ||
+	 op == CAIRO_OPERATOR_ADD)) {
+	op = PIXMAN_OP_SRC;
+    } else if (mask) {
+	if (op == CAIRO_OPERATOR_CLEAR) {
+#if PIXMAN_HAS_OP_LERP
+	    op = PIXMAN_OP_LERP_CLEAR;
+#else
+	    free_src = src = _pixman_image_for_color (CAIRO_COLOR_WHITE);
+	    if (unlikely (src == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    op = PIXMAN_OP_OUT_REVERSE;
+#endif
+	} else if (op == CAIRO_OPERATOR_SOURCE) {
+#if PIXMAN_HAS_OP_LERP
+	    op = PIXMAN_OP_LERP_SRC;
+#else
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+#endif
+	} else {
+	    op = _pixman_operator (op);
+	}
+    } else {
+	op = _pixman_operator (op);
+    }
+
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+	    int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+	    int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+	    int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+	    pixman_image_composite32 (op, src, mask, dst,
+				      x1 + src_x, y1 + src_y,
+				      x1 + mask_x, y1 + mask_y,
+				      x1 + dst_x, y1 + dst_y,
+				      x2 - x1, y2 - y1);
+	}
+    }
+
+    if (free_src)
+	pixman_image_unref (free_src);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#define CAIRO_FIXED_16_16_MIN _cairo_fixed_from_int (-32768)
+#define CAIRO_FIXED_16_16_MAX _cairo_fixed_from_int (32767)
+
+static cairo_bool_t
+line_exceeds_16_16 (const cairo_line_t *line)
+{
+    return
+	line->p1.x <= CAIRO_FIXED_16_16_MIN ||
+	line->p1.x >= CAIRO_FIXED_16_16_MAX ||
+
+	line->p2.x <= CAIRO_FIXED_16_16_MIN ||
+	line->p2.x >= CAIRO_FIXED_16_16_MAX ||
+
+	line->p1.y <= CAIRO_FIXED_16_16_MIN ||
+	line->p1.y >= CAIRO_FIXED_16_16_MAX ||
+
+	line->p2.y <= CAIRO_FIXED_16_16_MIN ||
+	line->p2.y >= CAIRO_FIXED_16_16_MAX;
+}
+
+static void
+project_line_x_onto_16_16 (const cairo_line_t *line,
+			   cairo_fixed_t top,
+			   cairo_fixed_t bottom,
+			   pixman_line_fixed_t *out)
+{
+    /* XXX use fixed-point arithmetic? */
+    cairo_point_double_t p1, p2;
+    double m;
+
+    p1.x = _cairo_fixed_to_double (line->p1.x);
+    p1.y = _cairo_fixed_to_double (line->p1.y);
+
+    p2.x = _cairo_fixed_to_double (line->p2.x);
+    p2.y = _cairo_fixed_to_double (line->p2.y);
+
+    m = (p2.x - p1.x) / (p2.y - p1.y);
+    out->p1.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (top - line->p1.y));
+    out->p2.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (bottom - line->p1.y));
+}
+
+void
+_pixman_image_add_traps (pixman_image_t *image,
+			 int dst_x, int dst_y,
+			 cairo_traps_t *traps)
+{
+    cairo_trapezoid_t *t = traps->traps;
+    int num_traps = traps->num_traps;
+    while (num_traps--) {
+	pixman_trapezoid_t trap;
+
+	/* top/bottom will be clamped to surface bounds */
+	trap.top = _cairo_fixed_to_16_16 (t->top);
+	trap.bottom = _cairo_fixed_to_16_16 (t->bottom);
+
+	/* However, all the other coordinates will have been left untouched so
+	 * as not to introduce numerical error. Recompute them if they
+	 * exceed the 16.16 limits.
+	 */
+	if (unlikely (line_exceeds_16_16 (&t->left))) {
+	    project_line_x_onto_16_16 (&t->left, t->top, t->bottom, &trap.left);
+	    trap.left.p1.y = trap.top;
+	    trap.left.p2.y = trap.bottom;
+	} else {
+	    trap.left.p1.x = _cairo_fixed_to_16_16 (t->left.p1.x);
+	    trap.left.p1.y = _cairo_fixed_to_16_16 (t->left.p1.y);
+	    trap.left.p2.x = _cairo_fixed_to_16_16 (t->left.p2.x);
+	    trap.left.p2.y = _cairo_fixed_to_16_16 (t->left.p2.y);
+	}
+
+	if (unlikely (line_exceeds_16_16 (&t->right))) {
+	    project_line_x_onto_16_16 (&t->right, t->top, t->bottom, &trap.right);
+	    trap.right.p1.y = trap.top;
+	    trap.right.p2.y = trap.bottom;
+	} else {
+	    trap.right.p1.x = _cairo_fixed_to_16_16 (t->right.p1.x);
+	    trap.right.p1.y = _cairo_fixed_to_16_16 (t->right.p1.y);
+	    trap.right.p2.x = _cairo_fixed_to_16_16 (t->right.p2.x);
+	    trap.right.p2.y = _cairo_fixed_to_16_16 (t->right.p2.y);
+	}
+
+	pixman_rasterize_trapezoid (image, &trap, -dst_x, -dst_y);
+	t++;
+    }
+}
+
+static cairo_int_status_t
+composite_traps (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 int			src_x,
+		 int			src_y,
+		 int			dst_x,
+		 int			dst_y,
+		 const cairo_rectangle_int_t *extents,
+		 cairo_antialias_t	antialias,
+		 cairo_traps_t		*traps)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *) _dst;
+    cairo_image_source_t *src = (cairo_image_source_t *) abstract_src;
+    cairo_int_status_t status;
+    pixman_image_t *mask;
+    pixman_format_code_t format;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    /* pixman doesn't eliminate self-intersecting trapezoids/edges */
+    status = _cairo_bentley_ottmann_tessellate_traps (traps,
+						      CAIRO_FILL_RULE_WINDING);
+    if (status != CAIRO_INT_STATUS_SUCCESS)
+	    return status;
+
+    /* Special case adding trapezoids onto a mask surface; we want to avoid
+     * creating an intermediate temporary mask unnecessarily.
+     *
+     * We make the assumption here that the portion of the trapezoids
+     * contained within the surface is bounded by [dst_x,dst_y,width,height];
+     * the Cairo core code passes bounds based on the trapezoid extents.
+     */
+    format = antialias == CAIRO_ANTIALIAS_NONE ? PIXMAN_a1 : PIXMAN_a8;
+    if (dst->pixman_format == format &&
+	(abstract_src == NULL ||
+	 (op == CAIRO_OPERATOR_ADD && src->is_opaque_solid)))
+    {
+	_pixman_image_add_traps (dst->pixman_image, dst_x, dst_y, traps);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    mask = pixman_image_create_bits (format,
+				     extents->width, extents->height,
+				     NULL, 0);
+    if (unlikely (mask == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _pixman_image_add_traps (mask, extents->x, extents->y, traps);
+    pixman_image_composite32 (_pixman_operator (op),
+                              src->pixman_image, mask, dst->pixman_image,
+                              extents->x + src_x, extents->y + src_y,
+                              0, 0,
+                              extents->x - dst_x, extents->y - dst_y,
+                              extents->width, extents->height);
+
+    pixman_image_unref (mask);
+
+    return  CAIRO_STATUS_SUCCESS;
+}
+
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,22,0)
+static void
+set_point (pixman_point_fixed_t *p, cairo_point_t *c)
+{
+    p->x = _cairo_fixed_to_16_16 (c->x);
+    p->y = _cairo_fixed_to_16_16 (c->y);
+}
+
+void
+_pixman_image_add_tristrip (pixman_image_t *image,
+			    int dst_x, int dst_y,
+			    cairo_tristrip_t *strip)
+{
+    pixman_triangle_t tri;
+    pixman_point_fixed_t *p[3] = {&tri.p1, &tri.p2, &tri.p3 };
+    int n;
+
+    set_point (p[0], &strip->points[0]);
+    set_point (p[1], &strip->points[1]);
+    set_point (p[2], &strip->points[2]);
+    pixman_add_triangles (image, -dst_x, -dst_y, 1, &tri);
+    for (n = 3; n < strip->num_points; n++) {
+	set_point (p[n%3], &strip->points[n]);
+	pixman_add_triangles (image, -dst_x, -dst_y, 1, &tri);
+    }
+}
+
+static cairo_int_status_t
+composite_tristrip (void			*_dst,
+		    cairo_operator_t	op,
+		    cairo_surface_t	*abstract_src,
+		    int			src_x,
+		    int			src_y,
+		    int			dst_x,
+		    int			dst_y,
+		    const cairo_rectangle_int_t *extents,
+		    cairo_antialias_t	antialias,
+		    cairo_tristrip_t	*strip)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *) _dst;
+    cairo_image_source_t *src = (cairo_image_source_t *) abstract_src;
+    pixman_image_t *mask;
+    pixman_format_code_t format;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (strip->num_points < 3)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (1) { /* pixman doesn't eliminate self-intersecting triangles/edges */
+	    cairo_int_status_t status;
+	    cairo_traps_t traps;
+	    int n;
+
+	    _cairo_traps_init (&traps);
+	    for (n = 0; n < strip->num_points; n++) {
+		    cairo_point_t p[4];
+
+		    p[0] = strip->points[0];
+		    p[1] = strip->points[1];
+		    p[2] = strip->points[2];
+		    p[3] = strip->points[0];
+
+		    _cairo_traps_tessellate_convex_quad (&traps, p);
+	    }
+	    status = composite_traps (_dst, op, abstract_src,
+				      src_x, src_y,
+				      dst_x, dst_y,
+				      extents, antialias, &traps);
+	    _cairo_traps_fini (&traps);
+
+	    return status;
+    }
+
+    format = antialias == CAIRO_ANTIALIAS_NONE ? PIXMAN_a1 : PIXMAN_a8;
+    if (dst->pixman_format == format &&
+	(abstract_src == NULL ||
+	 (op == CAIRO_OPERATOR_ADD && src->is_opaque_solid)))
+    {
+	_pixman_image_add_tristrip (dst->pixman_image, dst_x, dst_y, strip);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    mask = pixman_image_create_bits (format,
+				     extents->width, extents->height,
+				     NULL, 0);
+    if (unlikely (mask == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _pixman_image_add_tristrip (mask, extents->x, extents->y, strip);
+    pixman_image_composite32 (_pixman_operator (op),
+                              src->pixman_image, mask, dst->pixman_image,
+                              extents->x + src_x, extents->y + src_y,
+                              0, 0,
+                              extents->x - dst_x, extents->y - dst_y,
+                              extents->width, extents->height);
+
+    pixman_image_unref (mask);
+
+    return  CAIRO_STATUS_SUCCESS;
+}
+#endif
+
+static cairo_int_status_t
+check_composite_glyphs (const cairo_composite_rectangles_t *extents,
+			cairo_scaled_font_t *scaled_font,
+			cairo_glyph_t *glyphs,
+			int *num_glyphs)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if HAS_PIXMAN_GLYPHS
+static pixman_glyph_cache_t *global_glyph_cache;
+
+static inline pixman_glyph_cache_t *
+get_glyph_cache (void)
+{
+    if (!global_glyph_cache)
+	global_glyph_cache = pixman_glyph_cache_create ();
+
+    return global_glyph_cache;
+}
+
+void
+_cairo_image_compositor_reset_static_data (void)
+{
+    CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
+
+    if (global_glyph_cache)
+	pixman_glyph_cache_destroy (global_glyph_cache);
+    global_glyph_cache = NULL;
+
+    CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
+}
+
+void
+_cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
+				cairo_scaled_glyph_t *scaled_glyph)
+{
+    CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
+
+    if (global_glyph_cache) {
+	pixman_glyph_cache_remove (
+	    global_glyph_cache, scaled_font,
+	    (void *)_cairo_scaled_glyph_index (scaled_glyph));
+    }
+
+    CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
+}
+
+static cairo_int_status_t
+composite_glyphs (void				*_dst,
+		  cairo_operator_t		 op,
+		  cairo_surface_t		*_src,
+		  int				 src_x,
+		  int				 src_y,
+		  int				 dst_x,
+		  int				 dst_y,
+		  cairo_composite_glyphs_info_t *info)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+    pixman_glyph_cache_t *glyph_cache;
+    pixman_glyph_t pglyphs_stack[CAIRO_STACK_ARRAY_LENGTH (pixman_glyph_t)];
+    pixman_glyph_t *pglyphs = pglyphs_stack;
+    pixman_glyph_t *pg;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
+
+    glyph_cache = get_glyph_cache();
+    if (unlikely (glyph_cache == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto out_unlock;
+    }
+
+    pixman_glyph_cache_freeze (glyph_cache);
+
+    if (info->num_glyphs > ARRAY_LENGTH (pglyphs_stack)) {
+	pglyphs = _cairo_malloc_ab (info->num_glyphs, sizeof (pixman_glyph_t));
+	if (unlikely (pglyphs == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto out_thaw;
+	}
+    }
+
+    pg = pglyphs;
+    for (i = 0; i < info->num_glyphs; i++) {
+	unsigned long index = info->glyphs[i].index;
+	const void *glyph;
+
+	glyph = pixman_glyph_cache_lookup (glyph_cache, info->font, (void *)index);
+	if (!glyph) {
+	    cairo_scaled_glyph_t *scaled_glyph;
+	    cairo_image_surface_t *glyph_surface;
+
+	    /* This call can actually end up recursing, so we have to
+	     * drop the mutex around it.
+	     */
+	    CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
+	    status = _cairo_scaled_glyph_lookup (info->font, index,
+						 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+						 &scaled_glyph);
+	    CAIRO_MUTEX_LOCK (_cairo_glyph_cache_mutex);
+
+	    if (unlikely (status))
+		goto out_thaw;
+
+	    glyph_surface = scaled_glyph->surface;
+	    glyph = pixman_glyph_cache_insert (glyph_cache, info->font, (void *)index,
+					       glyph_surface->base.device_transform.x0,
+					       glyph_surface->base.device_transform.y0,
+					       glyph_surface->pixman_image);
+	    if (unlikely (!glyph)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto out_thaw;
+	    }
+	}
+
+	pg->x = _cairo_lround (info->glyphs[i].x);
+	pg->y = _cairo_lround (info->glyphs[i].y);
+	pg->glyph = glyph;
+	pg++;
+    }
+
+    if (info->use_mask) {
+	pixman_format_code_t mask_format;
+
+	mask_format = pixman_glyph_get_mask_format (glyph_cache, pg - pglyphs, pglyphs);
+
+	pixman_composite_glyphs (_pixman_operator (op),
+				 ((cairo_image_source_t *)_src)->pixman_image,
+				 to_pixman_image (_dst),
+				 mask_format,
+				 info->extents.x + src_x, info->extents.y + src_y,
+				 info->extents.x, info->extents.y,
+				 info->extents.x - dst_x, info->extents.y - dst_y,
+				 info->extents.width, info->extents.height,
+				 glyph_cache, pg - pglyphs, pglyphs);
+    } else {
+	pixman_composite_glyphs_no_mask (_pixman_operator (op),
+					 ((cairo_image_source_t *)_src)->pixman_image,
+					 to_pixman_image (_dst),
+					 src_x, src_y,
+					 - dst_x, - dst_y,
+					 glyph_cache, pg - pglyphs, pglyphs);
+    }
+
+out_thaw:
+    pixman_glyph_cache_thaw (glyph_cache);
+
+    if (pglyphs != pglyphs_stack)
+	free(pglyphs);
+
+out_unlock:
+    CAIRO_MUTEX_UNLOCK (_cairo_glyph_cache_mutex);
+    return status;
+}
+#else
+void
+_cairo_image_compositor_reset_static_data (void)
+{
+}
+
+void
+_cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
+				cairo_scaled_glyph_t *scaled_glyph)
+{
+}
+
+static cairo_int_status_t
+composite_one_glyph (void				*_dst,
+		     cairo_operator_t			 op,
+		     cairo_surface_t			*_src,
+		     int				 src_x,
+		     int				 src_y,
+		     int				 dst_x,
+		     int				 dst_y,
+		     cairo_composite_glyphs_info_t	 *info)
+{
+    cairo_image_surface_t *glyph_surface;
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_status_t status;
+    int x, y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = _cairo_scaled_glyph_lookup (info->font,
+					 info->glyphs[0].index,
+					 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					 &scaled_glyph);
+
+    if (unlikely (status))
+	return status;
+
+    glyph_surface = scaled_glyph->surface;
+    if (glyph_surface->width == 0 || glyph_surface->height == 0)
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    /* round glyph locations to the nearest pixel */
+    /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
+    x = _cairo_lround (info->glyphs[0].x -
+		       glyph_surface->base.device_transform.x0);
+    y = _cairo_lround (info->glyphs[0].y -
+		       glyph_surface->base.device_transform.y0);
+
+    pixman_image_composite32 (_pixman_operator (op),
+			      ((cairo_image_source_t *)_src)->pixman_image,
+			      glyph_surface->pixman_image,
+			      to_pixman_image (_dst),
+			      x + src_x,  y + src_y,
+			      0, 0,
+			      x - dst_x, y - dst_y,
+			      glyph_surface->width,
+			      glyph_surface->height);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_glyphs_via_mask (void				*_dst,
+			   cairo_operator_t		 op,
+			   cairo_surface_t		*_src,
+			   int				 src_x,
+			   int				 src_y,
+			   int				 dst_x,
+			   int				 dst_y,
+			   cairo_composite_glyphs_info_t *info)
+{
+    cairo_scaled_glyph_t *glyph_cache[64];
+    pixman_image_t *white = _pixman_image_for_color (CAIRO_COLOR_WHITE);
+    cairo_scaled_glyph_t *scaled_glyph;
+    uint8_t buf[2048];
+    pixman_image_t *mask;
+    pixman_format_code_t format;
+    cairo_status_t status;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (unlikely (white == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* XXX convert the glyphs to common formats a8/a8r8g8b8 to hit
+     * optimised paths through pixman. Should we increase the bit
+     * depth of the target surface, we should reconsider the appropriate
+     * mask formats.
+     */
+
+    status = _cairo_scaled_glyph_lookup (info->font,
+					 info->glyphs[0].index,
+					 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					 &scaled_glyph);
+    if (unlikely (status)) {
+	pixman_image_unref (white);
+	return status;
+    }
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+    glyph_cache[info->glyphs[0].index % ARRAY_LENGTH (glyph_cache)] = scaled_glyph;
+
+    format = PIXMAN_a8;
+    i = (info->extents.width + 3) & ~3;
+    if (scaled_glyph->surface->base.content & CAIRO_CONTENT_COLOR) {
+	format = PIXMAN_a8r8g8b8;
+	i = info->extents.width * 4;
+    }
+
+    if (i * info->extents.height > (int) sizeof (buf)) {
+	mask = pixman_image_create_bits (format,
+					info->extents.width,
+					info->extents.height,
+					NULL, 0);
+    } else {
+	memset (buf, 0, i * info->extents.height);
+	mask = pixman_image_create_bits (format,
+					info->extents.width,
+					info->extents.height,
+					(uint32_t *)buf, i);
+    }
+    if (unlikely (mask == NULL)) {
+	pixman_image_unref (white);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    status = CAIRO_STATUS_SUCCESS;
+    for (i = 0; i < info->num_glyphs; i++) {
+	unsigned long glyph_index = info->glyphs[i].index;
+	int cache_index = glyph_index % ARRAY_LENGTH (glyph_cache);
+	cairo_image_surface_t *glyph_surface;
+	int x, y;
+
+	scaled_glyph = glyph_cache[cache_index];
+	if (scaled_glyph == NULL ||
+	    _cairo_scaled_glyph_index (scaled_glyph) != glyph_index)
+	{
+	    status = _cairo_scaled_glyph_lookup (info->font, glyph_index,
+						 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+						 &scaled_glyph);
+
+	    if (unlikely (status)) {
+		pixman_image_unref (mask);
+		pixman_image_unref (white);
+		return status;
+	    }
+
+	    glyph_cache[cache_index] = scaled_glyph;
+	}
+
+	glyph_surface = scaled_glyph->surface;
+	if (glyph_surface->width && glyph_surface->height) {
+	    if (glyph_surface->base.content & CAIRO_CONTENT_COLOR &&
+		format == PIXMAN_a8) {
+		pixman_image_t *ca_mask;
+
+		format = PIXMAN_a8r8g8b8;
+		ca_mask = pixman_image_create_bits (format,
+						    info->extents.width,
+						    info->extents.height,
+						    NULL, 0);
+		if (unlikely (ca_mask == NULL)) {
+		    pixman_image_unref (mask);
+		    pixman_image_unref (white);
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		}
+
+		pixman_image_composite32 (PIXMAN_OP_SRC,
+					  white, mask, ca_mask,
+					  0, 0,
+					  0, 0,
+					  0, 0,
+					  info->extents.width,
+					  info->extents.height);
+		pixman_image_unref (mask);
+		mask = ca_mask;
+	    }
+
+	    /* round glyph locations to the nearest pixel */
+	    /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
+	    x = _cairo_lround (info->glyphs[i].x -
+			       glyph_surface->base.device_transform.x0);
+	    y = _cairo_lround (info->glyphs[i].y -
+			       glyph_surface->base.device_transform.y0);
+
+	    if (glyph_surface->pixman_format == format) {
+		pixman_image_composite32 (PIXMAN_OP_ADD,
+					  glyph_surface->pixman_image, NULL, mask,
+					  0, 0,
+					  0, 0,
+					  x - info->extents.x, y - info->extents.y,
+					  glyph_surface->width,
+					  glyph_surface->height);
+	    } else {
+		pixman_image_composite32 (PIXMAN_OP_ADD,
+					  white, glyph_surface->pixman_image, mask,
+					  0, 0,
+					  0, 0,
+					  x - info->extents.x, y - info->extents.y,
+					  glyph_surface->width,
+					  glyph_surface->height);
+	    }
+	}
+    }
+
+    if (format == PIXMAN_a8r8g8b8)
+	pixman_image_set_component_alpha (mask, TRUE);
+
+    pixman_image_composite32 (_pixman_operator (op),
+			      ((cairo_image_source_t *)_src)->pixman_image,
+			      mask,
+			      to_pixman_image (_dst),
+			      info->extents.x + src_x, info->extents.y + src_y,
+			      0, 0,
+			      info->extents.x - dst_x, info->extents.y - dst_y,
+			      info->extents.width, info->extents.height);
+    pixman_image_unref (mask);
+    pixman_image_unref (white);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_glyphs (void				*_dst,
+		  cairo_operator_t		 op,
+		  cairo_surface_t		*_src,
+		  int				 src_x,
+		  int				 src_y,
+		  int				 dst_x,
+		  int				 dst_y,
+		  cairo_composite_glyphs_info_t *info)
+{
+    cairo_scaled_glyph_t *glyph_cache[64];
+    pixman_image_t *dst, *src;
+    cairo_status_t status;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (info->num_glyphs == 1)
+	return composite_one_glyph(_dst, op, _src, src_x, src_y, dst_x, dst_y, info);
+
+    if (info->use_mask)
+	return composite_glyphs_via_mask(_dst, op, _src, src_x, src_y, dst_x, dst_y, info);
+
+    op = _pixman_operator (op);
+    dst = to_pixman_image (_dst);
+    src = ((cairo_image_source_t *)_src)->pixman_image;
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+    status = CAIRO_STATUS_SUCCESS;
+
+    for (i = 0; i < info->num_glyphs; i++) {
+	int x, y;
+	cairo_image_surface_t *glyph_surface;
+	cairo_scaled_glyph_t *scaled_glyph;
+	unsigned long glyph_index = info->glyphs[i].index;
+	int cache_index = glyph_index % ARRAY_LENGTH (glyph_cache);
+
+	scaled_glyph = glyph_cache[cache_index];
+	if (scaled_glyph == NULL ||
+	    _cairo_scaled_glyph_index (scaled_glyph) != glyph_index)
+	{
+	    status = _cairo_scaled_glyph_lookup (info->font, glyph_index,
+						 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+						 &scaled_glyph);
+
+	    if (unlikely (status))
+		break;
+
+	    glyph_cache[cache_index] = scaled_glyph;
+	}
+
+	glyph_surface = scaled_glyph->surface;
+	if (glyph_surface->width && glyph_surface->height) {
+	    /* round glyph locations to the nearest pixel */
+	    /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
+	    x = _cairo_lround (info->glyphs[i].x -
+			       glyph_surface->base.device_transform.x0);
+	    y = _cairo_lround (info->glyphs[i].y -
+			       glyph_surface->base.device_transform.y0);
+
+	    pixman_image_composite32 (op, src, glyph_surface->pixman_image, dst,
+                                      x + src_x,  y + src_y,
+                                      0, 0,
+                                      x - dst_x, y - dst_y,
+				      glyph_surface->width,
+				      glyph_surface->height);
+	}
+    }
+
+    return status;
+}
+#endif
+
+static cairo_int_status_t
+check_composite (const cairo_composite_rectangles_t *extents)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+const cairo_compositor_t *
+_cairo_image_traps_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_traps_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_traps_compositor_init(&compositor,
+				     &__cairo_no_compositor);
+	compositor.acquire = acquire;
+	compositor.release = release;
+	compositor.set_clip_region = set_clip_region;
+	compositor.pattern_to_surface = _cairo_image_source_create_for_pattern;
+	compositor.draw_image_boxes = draw_image_boxes;
+	//compositor.copy_boxes = copy_boxes;
+	compositor.fill_boxes = fill_boxes;
+	compositor.check_composite = check_composite;
+	compositor.composite = composite;
+	compositor.lerp = lerp;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	//compositor.check_composite_traps = check_composite_traps;
+	compositor.composite_traps = composite_traps;
+	//compositor.check_composite_tristrip = check_composite_traps;
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,22,0)
+	compositor.composite_tristrip = composite_tristrip;
+#endif
+	compositor.check_composite_glyphs = check_composite_glyphs;
+	compositor.composite_glyphs = composite_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
+
+const cairo_compositor_t *
+_cairo_image_mask_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_mask_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_mask_compositor_init (&compositor,
+				     _cairo_image_traps_compositor_get ());
+	compositor.acquire = acquire;
+	compositor.release = release;
+	compositor.set_clip_region = set_clip_region;
+	compositor.pattern_to_surface = _cairo_image_source_create_for_pattern;
+	compositor.draw_image_boxes = draw_image_boxes;
+	compositor.fill_rectangles = fill_rectangles;
+	compositor.fill_boxes = fill_boxes;
+	compositor.check_composite = check_composite;
+	compositor.composite = composite;
+	//compositor.lerp = lerp;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	compositor.check_composite_glyphs = check_composite_glyphs;
+	compositor.composite_glyphs = composite_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
+
+#if PIXMAN_HAS_COMPOSITOR
+typedef struct _cairo_image_span_renderer {
+    cairo_span_renderer_t base;
+
+    pixman_image_compositor_t *compositor;
+    pixman_image_t *src, *mask;
+    float opacity;
+    cairo_rectangle_int_t extents;
+} cairo_image_span_renderer_t;
+COMPILE_TIME_ASSERT (sizeof (cairo_image_span_renderer_t) <= sizeof (cairo_abstract_span_renderer_t));
+
+static cairo_status_t
+_cairo_image_bounded_opaque_spans (void *abstract_renderer,
+				   int y, int height,
+				   const cairo_half_open_span_t *spans,
+				   unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (spans[0].coverage)
+	    pixman_image_compositor_blt (r->compositor,
+					 spans[0].x, y,
+					 spans[1].x - spans[0].x, height,
+					 spans[0].coverage);
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_image_bounded_spans (void *abstract_renderer,
+			    int y, int height,
+			    const cairo_half_open_span_t *spans,
+			    unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (spans[0].coverage) {
+	    pixman_image_compositor_blt (r->compositor,
+					 spans[0].x, y,
+					 spans[1].x - spans[0].x, height,
+					 r->opacity * spans[0].coverage);
+	}
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_image_unbounded_spans (void *abstract_renderer,
+			      int y, int height,
+			      const cairo_half_open_span_t *spans,
+			      unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    assert (y + height <= r->extents.height);
+    if (y > r->extents.y) {
+	pixman_image_compositor_blt (r->compositor,
+				     r->extents.x, r->extents.y,
+				     r->extents.width, y - r->extents.y,
+				     0);
+    }
+
+    if (num_spans == 0) {
+	pixman_image_compositor_blt (r->compositor,
+				     r->extents.x, y,
+				     r->extents.width,  height,
+				     0);
+    } else {
+	if (spans[0].x != r->extents.x) {
+	    pixman_image_compositor_blt (r->compositor,
+					 r->extents.x, y,
+					 spans[0].x - r->extents.x,
+					 height,
+					 0);
+	}
+
+	do {
+	    assert (spans[0].x < r->extents.x + r->extents.width);
+	    pixman_image_compositor_blt (r->compositor,
+					 spans[0].x, y,
+					 spans[1].x - spans[0].x, height,
+					 r->opacity * spans[0].coverage);
+	    spans++;
+	} while (--num_spans > 1);
+
+	if (spans[0].x != r->extents.x + r->extents.width) {
+	    assert (spans[0].x < r->extents.x + r->extents.width);
+	    pixman_image_compositor_blt (r->compositor,
+					 spans[0].x,     y,
+					 r->extents.x + r->extents.width - spans[0].x, height,
+					 0);
+	}
+    }
+
+    r->extents.y = y + height;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_image_clipped_spans (void *abstract_renderer,
+			    int y, int height,
+			    const cairo_half_open_span_t *spans,
+			    unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    assert (num_spans);
+
+    do {
+	if (! spans[0].inverse)
+	    pixman_image_compositor_blt (r->compositor,
+					 spans[0].x, y,
+					 spans[1].x - spans[0].x, height,
+					 r->opacity * spans[0].coverage);
+	spans++;
+    } while (--num_spans > 1);
+
+    r->extents.y = y + height;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_image_finish_unbounded_spans (void *abstract_renderer)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (r->extents.y < r->extents.height) {
+	pixman_image_compositor_blt (r->compositor,
+				     r->extents.x, r->extents.y,
+				     r->extents.width,
+				     r->extents.height - r->extents.y,
+				     0);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+span_renderer_init (cairo_abstract_span_renderer_t	*_r,
+		    const cairo_composite_rectangles_t *composite,
+		    cairo_bool_t			 needs_clip)
+{
+    cairo_image_span_renderer_t *r = (cairo_image_span_renderer_t *)_r;
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)composite->surface;
+    const cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_operator_t op = composite->op;
+    int src_x, src_y;
+    int mask_x, mask_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	op = PIXMAN_OP_LERP_CLEAR;
+    } else if (dst->base.is_clear &&
+	       (op == CAIRO_OPERATOR_SOURCE ||
+		op == CAIRO_OPERATOR_OVER ||
+		op == CAIRO_OPERATOR_ADD)) {
+	op = PIXMAN_OP_SRC;
+    } else if (op == CAIRO_OPERATOR_SOURCE) {
+	op = PIXMAN_OP_LERP_SRC;
+    } else {
+	op = _pixman_operator (op);
+    }
+
+    r->compositor = NULL;
+    r->mask = NULL;
+    r->src = _pixman_image_for_pattern (dst, source, FALSE,
+					&composite->unbounded,
+					&composite->source_sample_area,
+					&src_x, &src_y);
+    if (unlikely (r->src == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    r->opacity = 1.0;
+    if (composite->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
+	r->opacity = composite->mask_pattern.solid.color.alpha;
+    } else {
+	r->mask = _pixman_image_for_pattern (dst,
+					     &composite->mask_pattern.base,
+					     TRUE,
+					     &composite->unbounded,
+					     &composite->mask_sample_area,
+					     &mask_x, &mask_y);
+	if (unlikely (r->mask == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	/* XXX Component-alpha? */
+	if ((dst->base.content & CAIRO_CONTENT_COLOR) == 0 &&
+	    _cairo_pattern_is_opaque (source, &composite->source_sample_area))
+	{
+	    pixman_image_unref (r->src);
+	    r->src = r->mask;
+	    src_x = mask_x;
+	    src_y = mask_y;
+	    r->mask = NULL;
+	}
+    }
+
+    if (composite->is_bounded) {
+	if (r->opacity == 1.)
+	    r->base.render_rows = _cairo_image_bounded_opaque_spans;
+	else
+	    r->base.render_rows = _cairo_image_bounded_spans;
+	r->base.finish = NULL;
+    } else {
+	if (needs_clip)
+	    r->base.render_rows = _cairo_image_clipped_spans;
+	else
+	    r->base.render_rows = _cairo_image_unbounded_spans;
+        r->base.finish = _cairo_image_finish_unbounded_spans;
+	r->extents = composite->unbounded;
+	r->extents.height += r->extents.y;
+    }
+
+    r->compositor =
+	pixman_image_create_compositor (op, r->src, r->mask, dst->pixman_image,
+					composite->unbounded.x + src_x,
+					composite->unbounded.y + src_y,
+					composite->unbounded.x + mask_x,
+					composite->unbounded.y + mask_y,
+					composite->unbounded.x,
+					composite->unbounded.y,
+					composite->unbounded.width,
+					composite->unbounded.height);
+    if (unlikely (r->compositor == NULL))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+span_renderer_fini (cairo_abstract_span_renderer_t *_r,
+		    cairo_int_status_t status)
+{
+    cairo_image_span_renderer_t *r = (cairo_image_span_renderer_t *) _r;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && r->base.finish)
+	r->base.finish (r);
+
+    if (r->compositor)
+	pixman_image_compositor_destroy (r->compositor);
+
+    if (r->src)
+	pixman_image_unref (r->src);
+    if (r->mask)
+	pixman_image_unref (r->mask);
+}
+#else
+typedef struct _cairo_image_span_renderer {
+    cairo_span_renderer_t base;
+
+    const cairo_composite_rectangles_t *composite;
+
+    float opacity;
+    uint8_t op;
+    int bpp;
+
+    pixman_image_t *src, *mask;
+    union {
+	struct fill {
+	    ptrdiff_t stride;
+	    uint8_t *data;
+	    uint32_t pixel;
+	} fill;
+	struct blit {
+	    int stride;
+	    uint8_t *data;
+	    int src_stride;
+	    uint8_t *src_data;
+	} blit;
+	struct composite {
+	    pixman_image_t *dst;
+	    int src_x, src_y;
+	    int mask_x, mask_y;
+	    int run_length;
+	} composite;
+	struct finish {
+	    cairo_rectangle_int_t extents;
+	    int src_x, src_y;
+	    ptrdiff_t stride;
+	    uint8_t *data;
+	} mask;
+    } u;
+    uint8_t _buf[0];
+#define SZ_BUF (int)(sizeof (cairo_abstract_span_renderer_t) - sizeof (cairo_image_span_renderer_t))
+} cairo_image_span_renderer_t;
+COMPILE_TIME_ASSERT (sizeof (cairo_image_span_renderer_t) <= sizeof (cairo_abstract_span_renderer_t));
+
+static cairo_status_t
+_cairo_image_spans (void *abstract_renderer,
+		    int y, int height,
+		    const cairo_half_open_span_t *spans,
+		    unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    uint8_t *mask, *row;
+    int len;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    mask = r->u.mask.data + (y - r->u.mask.extents.y) * r->u.mask.stride;
+    mask += spans[0].x - r->u.mask.extents.x;
+    row = mask;
+
+    do {
+	len = spans[1].x - spans[0].x;
+	if (spans[0].coverage) {
+	    *row++ = r->opacity * spans[0].coverage;
+	    if (--len)
+		memset (row, row[-1], len);
+	}
+	row += len;
+	spans++;
+    } while (--num_spans > 1);
+
+    len = row - mask;
+    row = mask;
+    while (--height) {
+	mask += r->u.mask.stride;
+	memcpy (mask, row, len);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_image_spans_and_zero (void *abstract_renderer,
+			     int y, int height,
+			     const cairo_half_open_span_t *spans,
+			     unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    uint8_t *mask;
+    int len;
+
+    mask = r->u.mask.data;
+    if (y > r->u.mask.extents.y) {
+	len = (y - r->u.mask.extents.y) * r->u.mask.stride;
+	memset (mask, 0, len);
+	mask += len;
+    }
+
+    r->u.mask.extents.y = y + height;
+    r->u.mask.data = mask + height * r->u.mask.stride;
+    if (num_spans == 0) {
+	memset (mask, 0, height * r->u.mask.stride);
+    } else {
+	uint8_t *row = mask;
+
+	if (spans[0].x != r->u.mask.extents.x) {
+	    len = spans[0].x - r->u.mask.extents.x;
+	    memset (row, 0, len);
+	    row += len;
+	}
+
+	do {
+	    len = spans[1].x - spans[0].x;
+	    *row++ = r->opacity * spans[0].coverage;
+	    if (len > 1) {
+		memset (row, row[-1], --len);
+		row += len;
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+
+	if (spans[0].x != r->u.mask.extents.x + r->u.mask.extents.width) {
+	    len = r->u.mask.extents.x + r->u.mask.extents.width - spans[0].x;
+	    memset (row, 0, len);
+	}
+
+	row = mask;
+	while (--height) {
+	    mask += r->u.mask.stride;
+	    memcpy (mask, row, r->u.mask.extents.width);
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_image_finish_spans_and_zero (void *abstract_renderer)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (r->u.mask.extents.y < r->u.mask.extents.height)
+	memset (r->u.mask.data, 0, (r->u.mask.extents.height - r->u.mask.extents.y) * r->u.mask.stride);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_fill8_spans (void *abstract_renderer, int y, int h,
+	       const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	do {
+	    if (spans[0].coverage) {
+		int len = spans[1].x - spans[0].x;
+		uint8_t *d = r->u.fill.data + r->u.fill.stride*y + spans[0].x;
+		if (len == 1)
+		    *d = r->u.fill.pixel;
+		else
+		    memset(d, r->u.fill.pixel, len);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    if (spans[0].coverage) {
+		int yy = y, hh = h;
+		do {
+		    int len = spans[1].x - spans[0].x;
+		    uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
+		    if (len == 1)
+			*d = r->u.fill.pixel;
+		    else
+			memset(d, r->u.fill.pixel, len);
+		    yy++;
+		} while (--hh);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_fill16_spans (void *abstract_renderer, int y, int h,
+	       const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	do {
+	    if (spans[0].coverage) {
+		int len = spans[1].x - spans[0].x;
+		uint16_t *d = (uint16_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*2);
+		while (len-- > 0)
+		    *d++ = r->u.fill.pixel;
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    if (spans[0].coverage) {
+		int yy = y, hh = h;
+		do {
+		    int len = spans[1].x - spans[0].x;
+		    uint16_t *d = (uint16_t*)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*2);
+		    while (len-- > 0)
+			*d++ = r->u.fill.pixel;
+		    yy++;
+		} while (--hh);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_fill32_spans (void *abstract_renderer, int y, int h,
+	       const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	do {
+	    if (spans[0].coverage) {
+		int len = spans[1].x - spans[0].x;
+		if (len > 32) {
+		    pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), r->bpp,
+				 spans[0].x, y, len, 1, r->u.fill.pixel);
+		} else {
+		    uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
+		    while (len-- > 0)
+			*d++ = r->u.fill.pixel;
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    if (spans[0].coverage) {
+		if (spans[1].x - spans[0].x > 16) {
+		    pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), r->bpp,
+				 spans[0].x, y, spans[1].x - spans[0].x, h,
+				 r->u.fill.pixel);
+		} else {
+		    int yy = y, hh = h;
+		    do {
+			int len = spans[1].x - spans[0].x;
+			uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
+			while (len-- > 0)
+			    *d++ = r->u.fill.pixel;
+			yy++;
+		    } while (--hh);
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if 0
+static cairo_status_t
+_fill_spans (void *abstract_renderer, int y, int h,
+	     const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (spans[0].coverage) {
+		pixman_fill ((uint32_t *) r->data, r->stride, r->bpp,
+			     spans[0].x, y,
+			     spans[1].x - spans[0].x, h,
+			     r->pixel);
+	}
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+#endif
+
+static cairo_status_t
+_blit_spans (void *abstract_renderer, int y, int h,
+	     const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    int cpp;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    cpp = r->bpp/8;
+    if (likely (h == 1)) {
+	uint8_t *src = r->u.blit.src_data + y*r->u.blit.src_stride;
+	uint8_t *dst = r->u.blit.data + y*r->u.blit.stride;
+	do {
+	    if (spans[0].coverage) {
+		void *s = src + spans[0].x*cpp;
+		void *d = dst + spans[0].x*cpp;
+		int len = (spans[1].x - spans[0].x) * cpp;
+		switch (len) {
+		case 1:
+		    *(uint8_t *)d = *(uint8_t *)s;
+		    break;
+		case 2:
+		    *(uint16_t *)d = *(uint16_t *)s;
+		    break;
+		case 4:
+		    *(uint32_t *)d = *(uint32_t *)s;
+		    break;
+#if HAVE_UINT64_T
+		case 8:
+		    *(uint64_t *)d = *(uint64_t *)s;
+		    break;
+#endif
+		default:
+		    memcpy(d, s, len);
+		    break;
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    if (spans[0].coverage) {
+		int yy = y, hh = h;
+		do {
+		    void *src = r->u.blit.src_data + yy*r->u.blit.src_stride + spans[0].x*cpp;
+		    void *dst = r->u.blit.data + yy*r->u.blit.stride + spans[0].x*cpp;
+		    int len = (spans[1].x - spans[0].x) * cpp;
+		    switch (len) {
+		    case 1:
+			*(uint8_t *)dst = *(uint8_t *)src;
+			break;
+		    case 2:
+			*(uint16_t *)dst = *(uint16_t *)src;
+			break;
+		    case 4:
+			*(uint32_t *)dst = *(uint32_t *)src;
+			break;
+#if HAVE_UINT64_T
+		    case 8:
+			*(uint64_t *)dst = *(uint64_t *)src;
+			break;
+#endif
+		    default:
+			memcpy(dst, src, len);
+			break;
+		    }
+		    yy++;
+		} while (--hh);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_mono_spans (void *abstract_renderer, int y, int h,
+	     const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (spans[0].coverage) {
+	    pixman_image_composite32 (r->op,
+				      r->src, NULL, r->u.composite.dst,
+				      spans[0].x + r->u.composite.src_x,  y + r->u.composite.src_y,
+				      0, 0,
+				      spans[0].x, y,
+				      spans[1].x - spans[0].x, h);
+	}
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_mono_unbounded_spans (void *abstract_renderer, int y, int h,
+		       const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0) {
+	pixman_image_composite32 (PIXMAN_OP_CLEAR,
+				  r->src, NULL, r->u.composite.dst,
+				  spans[0].x + r->u.composite.src_x,  y + r->u.composite.src_y,
+				  0, 0,
+				  r->composite->unbounded.x, y,
+				  r->composite->unbounded.width, h);
+	r->u.composite.mask_y = y + h;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (y != r->u.composite.mask_y) {
+	pixman_image_composite32 (PIXMAN_OP_CLEAR,
+				  r->src, NULL, r->u.composite.dst,
+				  spans[0].x + r->u.composite.src_x,  y + r->u.composite.src_y,
+				  0, 0,
+				  r->composite->unbounded.x, r->u.composite.mask_y,
+				  r->composite->unbounded.width, y - r->u.composite.mask_y);
+    }
+
+    if (spans[0].x != r->composite->unbounded.x) {
+	    pixman_image_composite32 (PIXMAN_OP_CLEAR,
+				      r->src, NULL, r->u.composite.dst,
+				      spans[0].x + r->u.composite.src_x,  y + r->u.composite.src_y,
+				      0, 0,
+				      r->composite->unbounded.x, y,
+				      spans[0].x - r->composite->unbounded.x, h);
+    }
+
+    do {
+	int op = spans[0].coverage ? r->op : PIXMAN_OP_CLEAR;
+	pixman_image_composite32 (op,
+				  r->src, NULL, r->u.composite.dst,
+				  spans[0].x + r->u.composite.src_x,  y + r->u.composite.src_y,
+				  0, 0,
+				  spans[0].x, y,
+				  spans[1].x - spans[0].x, h);
+	spans++;
+    } while (--num_spans > 1);
+
+    if (spans[0].x != r->composite->unbounded.x + r->composite->unbounded.width) {
+	    pixman_image_composite32 (PIXMAN_OP_CLEAR,
+				      r->src, NULL, r->u.composite.dst,
+				      spans[0].x + r->u.composite.src_x,  y + r->u.composite.src_y,
+				      0, 0,
+				      spans[0].x, y,
+				      r->composite->unbounded.x + r->composite->unbounded.width - spans[0].x, h);
+    }
+
+    r->u.composite.mask_y = y + h;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_mono_finish_unbounded_spans (void *abstract_renderer)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (r->u.composite.mask_y < r->composite->unbounded.y + r->composite->unbounded.height) {
+	pixman_image_composite32 (PIXMAN_OP_CLEAR,
+				  r->src, NULL, r->u.composite.dst,
+				  r->composite->unbounded.x + r->u.composite.src_x,  r->u.composite.mask_y + r->u.composite.src_y,
+				  0, 0,
+				  r->composite->unbounded.x, r->u.composite.mask_y,
+				  r->composite->unbounded.width,
+				  r->composite->unbounded.y + r->composite->unbounded.height - r->u.composite.mask_y);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+mono_renderer_init (cairo_image_span_renderer_t	*r,
+		    const cairo_composite_rectangles_t *composite,
+		    cairo_antialias_t			 antialias,
+		    cairo_bool_t			 needs_clip)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)composite->surface;
+
+    if (antialias != CAIRO_ANTIALIAS_NONE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (!_cairo_pattern_is_opaque_solid (&composite->mask_pattern.base))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    r->base.render_rows = NULL;
+    if (composite->source_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_color_t *color;
+
+	color = &composite->source_pattern.solid.color;
+	if (composite->op == CAIRO_OPERATOR_CLEAR)
+	    color = CAIRO_COLOR_TRANSPARENT;
+
+	if (fill_reduces_to_source (composite->op, color, dst, &r->u.fill.pixel)) {
+	    /* Use plain C for the fill operations as the span length is
+	     * typically small, too small to payback the startup overheads of
+	     * using SSE2 etc.
+	     */
+	    switch (PIXMAN_FORMAT_BPP(dst->pixman_format)) {
+	    case 8: r->base.render_rows = _fill8_spans; break;
+	    case 16: r->base.render_rows = _fill16_spans; break;
+	    case 32: r->base.render_rows = _fill32_spans; break;
+	    default: break;
+	    }
+	    r->u.fill.data = dst->data;
+	    r->u.fill.stride = dst->stride;
+	}
+    } else if ((composite->op == CAIRO_OPERATOR_SOURCE ||
+		(composite->op == CAIRO_OPERATOR_OVER &&
+		 (dst->base.is_clear || (dst->base.content & CAIRO_CONTENT_ALPHA) == 0))) &&
+	       composite->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE &&
+	       composite->source_pattern.surface.surface->backend->type == CAIRO_SURFACE_TYPE_IMAGE &&
+	       to_image_surface(composite->source_pattern.surface.surface)->format == dst->format)
+    {
+       cairo_image_surface_t *src =
+	   to_image_surface(composite->source_pattern.surface.surface);
+       int tx, ty;
+
+	if (_cairo_matrix_is_integer_translation(&composite->source_pattern.base.matrix,
+						 &tx, &ty) &&
+	    composite->bounded.x + tx >= 0 &&
+	    composite->bounded.y + ty >= 0 &&
+	    composite->bounded.x + composite->bounded.width +  tx <= src->width &&
+	    composite->bounded.y + composite->bounded.height + ty <= src->height) {
+
+	    r->u.blit.stride = dst->stride;
+	    r->u.blit.data = dst->data;
+	    r->u.blit.src_stride = src->stride;
+	    r->u.blit.src_data = src->data + src->stride * ty + tx * 4;
+	    r->base.render_rows = _blit_spans;
+	}
+    }
+
+    if (r->base.render_rows == NULL) {
+	r->src = _pixman_image_for_pattern (dst, &composite->source_pattern.base, FALSE,
+					    &composite->unbounded,
+					    &composite->source_sample_area,
+					    &r->u.composite.src_x, &r->u.composite.src_y);
+	if (unlikely (r->src == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	r->u.composite.dst = to_pixman_image (composite->surface);
+	r->op = _pixman_operator (composite->op);
+	if (composite->is_bounded == 0) {
+	    r->base.render_rows = _mono_unbounded_spans;
+	    r->base.finish = _mono_finish_unbounded_spans;
+	    r->u.composite.mask_y = composite->unbounded.y;
+	} else
+	    r->base.render_rows = _mono_spans;
+    }
+    r->bpp = PIXMAN_FORMAT_BPP(dst->pixman_format);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+#define ONE_HALF 0x7f
+#define RB_MASK 0x00ff00ff
+#define RB_ONE_HALF 0x007f007f
+#define RB_MASK_PLUS_ONE 0x01000100
+#define G_SHIFT 8
+static inline uint32_t
+mul8x2_8 (uint32_t a, uint8_t b)
+{
+    uint32_t t = (a & RB_MASK) * b + RB_ONE_HALF;
+    return ((t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT) & RB_MASK;
+}
+
+static inline uint32_t
+add8x2_8x2 (uint32_t a, uint32_t b)
+{
+    uint32_t t = a + b;
+    t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK);
+    return t & RB_MASK;
+}
+
+static inline uint8_t
+mul8_8 (uint8_t a, uint8_t b)
+{
+    uint16_t t = a * (uint16_t)b + ONE_HALF;
+    return ((t >> G_SHIFT) + t) >> G_SHIFT;
+}
+
+static inline uint32_t
+lerp8x4 (uint32_t src, uint8_t a, uint32_t dst)
+{
+    return (add8x2_8x2 (mul8x2_8 (src, a),
+			mul8x2_8 (dst, ~a)) |
+	    add8x2_8x2 (mul8x2_8 (src >> G_SHIFT, a),
+			mul8x2_8 (dst >> G_SHIFT, ~a)) << G_SHIFT);
+}
+
+static cairo_status_t
+_fill_a8_lerp_opaque_spans (void *abstract_renderer, int y, int h,
+			    const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	uint8_t *d = r->u.fill.data + r->u.fill.stride*y;
+	do {
+	    uint8_t a = spans[0].coverage;
+	    if (a) {
+		int len = spans[1].x - spans[0].x;
+		if (a == 0xff) {
+		    memset(d + spans[0].x, r->u.fill.pixel, len);
+		} else {
+		    uint8_t s = mul8_8(a, r->u.fill.pixel);
+		    uint8_t *dst = d + spans[0].x;
+		    a = ~a;
+		    while (len-- > 0) {
+			uint8_t t = mul8_8(*dst, a);
+			*dst++ = t + s;
+		    }
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    uint8_t a = spans[0].coverage;
+	    if (a) {
+		int yy = y, hh = h;
+		if (a == 0xff) {
+		    do {
+			int len = spans[1].x - spans[0].x;
+			uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
+			memset(d, r->u.fill.pixel, len);
+			yy++;
+		    } while (--hh);
+		} else {
+		    uint8_t s = mul8_8(a, r->u.fill.pixel);
+		    a = ~a;
+		    do {
+			int len = spans[1].x - spans[0].x;
+			uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
+			while (len-- > 0) {
+			    uint8_t t = mul8_8(*d, a);
+			    *d++ = t + s;
+			}
+			yy++;
+		    } while (--hh);
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_fill_xrgb32_lerp_opaque_spans (void *abstract_renderer, int y, int h,
+				const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	do {
+	    uint8_t a = spans[0].coverage;
+	    if (a) {
+		int len = spans[1].x - spans[0].x;
+		uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
+		if (a == 0xff) {
+		    if (len > 31) {
+			pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), 32,
+				     spans[0].x, y, len, 1, r->u.fill.pixel);
+		    } else {
+			uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
+			while (len-- > 0)
+			    *d++ = r->u.fill.pixel;
+		    }
+		} else while (len-- > 0) {
+		    *d = lerp8x4 (r->u.fill.pixel, a, *d);
+		    d++;
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    uint8_t a = spans[0].coverage;
+	    if (a) {
+		if (a == 0xff) {
+		    if (spans[1].x - spans[0].x > 16) {
+			pixman_fill ((uint32_t *)r->u.fill.data, r->u.fill.stride / sizeof(uint32_t), 32,
+				     spans[0].x, y, spans[1].x - spans[0].x, h,
+				     r->u.fill.pixel);
+		    } else {
+			int yy = y, hh = h;
+			do {
+			    int len = spans[1].x - spans[0].x;
+			    uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
+			    while (len-- > 0)
+				*d++ = r->u.fill.pixel;
+			    yy++;
+			} while (--hh);
+		    }
+		} else {
+		    int yy = y, hh = h;
+		    do {
+			int len = spans[1].x - spans[0].x;
+			uint32_t *d = (uint32_t *)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
+			while (len-- > 0) {
+			    *d = lerp8x4 (r->u.fill.pixel, a, *d);
+			    d++;
+			}
+			yy++;
+		    } while (--hh);
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_fill_a8_lerp_spans (void *abstract_renderer, int y, int h,
+		     const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	do {
+	    uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
+	    if (a) {
+		int len = spans[1].x - spans[0].x;
+		uint8_t *d = r->u.fill.data + r->u.fill.stride*y + spans[0].x;
+		uint16_t p = (uint16_t)a * r->u.fill.pixel + 0x7f;
+		uint16_t ia = ~a;
+		while (len-- > 0) {
+		    uint16_t t = *d*ia + p;
+		    *d++ = (t + (t>>8)) >> 8;
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
+	    if (a) {
+		int yy = y, hh = h;
+		uint16_t p = (uint16_t)a * r->u.fill.pixel + 0x7f;
+		uint16_t ia = ~a;
+		do {
+		    int len = spans[1].x - spans[0].x;
+		    uint8_t *d = r->u.fill.data + r->u.fill.stride*yy + spans[0].x;
+		    while (len-- > 0) {
+			uint16_t t = *d*ia + p;
+			*d++ = (t + (t>>8)) >> 8;
+		    }
+		    yy++;
+		} while (--hh);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_fill_xrgb32_lerp_spans (void *abstract_renderer, int y, int h,
+			 const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	do {
+	    uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
+	    if (a) {
+		int len = spans[1].x - spans[0].x;
+		uint32_t *d = (uint32_t*)(r->u.fill.data + r->u.fill.stride*y + spans[0].x*4);
+		while (len-- > 0) {
+		    *d = lerp8x4 (r->u.fill.pixel, a, *d);
+		    d++;
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
+	    if (a) {
+		int yy = y, hh = h;
+		do {
+		    int len = spans[1].x - spans[0].x;
+		    uint32_t *d = (uint32_t *)(r->u.fill.data + r->u.fill.stride*yy + spans[0].x*4);
+		    while (len-- > 0) {
+			*d = lerp8x4 (r->u.fill.pixel, a, *d);
+			d++;
+		    }
+		    yy++;
+		} while (--hh);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_blit_xrgb32_lerp_spans (void *abstract_renderer, int y, int h,
+			 const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely(h == 1)) {
+	uint8_t *src = r->u.blit.src_data + y*r->u.blit.src_stride;
+	uint8_t *dst = r->u.blit.data + y*r->u.blit.stride;
+	do {
+	    uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
+	    if (a) {
+		uint32_t *s = (uint32_t*)src + spans[0].x;
+		uint32_t *d = (uint32_t*)dst + spans[0].x;
+		int len = spans[1].x - spans[0].x;
+		if (a == 0xff) {
+		    if (len == 1)
+			*d = *s;
+		    else
+			memcpy(d, s, len*4);
+		} else {
+		    while (len-- > 0) {
+			*d = lerp8x4 (*s, a, *d);
+			s++, d++;
+		    }
+		}
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    } else {
+	do {
+	    uint8_t a = mul8_8 (spans[0].coverage, r->bpp);
+	    if (a) {
+		int yy = y, hh = h;
+		do {
+		    uint32_t *s = (uint32_t *)(r->u.blit.src_data + yy*r->u.blit.src_stride + spans[0].x * 4);
+		    uint32_t *d = (uint32_t *)(r->u.blit.data + yy*r->u.blit.stride + spans[0].x * 4);
+		    int len = spans[1].x - spans[0].x;
+		    if (a == 0xff) {
+			if (len == 1)
+			    *d = *s;
+			else
+			    memcpy(d, s, len * 4);
+		    } else {
+			while (len-- > 0) {
+			    *d = lerp8x4 (*s, a, *d);
+			    s++, d++;
+			}
+		    }
+		    yy++;
+		} while (--hh);
+	    }
+	    spans++;
+	} while (--num_spans > 1);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_inplace_spans (void *abstract_renderer,
+		int y, int h,
+		const cairo_half_open_span_t *spans,
+		unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    uint8_t *mask;
+    int x0, x1;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (num_spans == 2 && spans[0].coverage == 0xff) {
+	pixman_image_composite32 (r->op, r->src, NULL, r->u.composite.dst,
+				  spans[0].x + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  spans[0].x, y,
+				  spans[1].x - spans[0].x, h);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    mask = (uint8_t *)pixman_image_get_data (r->mask);
+    x1 = x0 = spans[0].x;
+    do {
+	int len = spans[1].x - spans[0].x;
+	*mask++ = spans[0].coverage;
+	if (len > 1) {
+	    if (len >= r->u.composite.run_length && spans[0].coverage == 0xff) {
+		if (x1 != x0) {
+		    pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
+					      x0 + r->u.composite.src_x,
+					      y + r->u.composite.src_y,
+					      0, 0,
+					      x0, y,
+					      x1 - x0, h);
+		}
+		pixman_image_composite32 (r->op, r->src, NULL, r->u.composite.dst,
+					  spans[0].x + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  spans[0].x, y,
+					  len, h);
+		mask = (uint8_t *)pixman_image_get_data (r->mask);
+		x0 = spans[1].x;
+	    } else if (spans[0].coverage == 0x0 &&
+		       x1 - x0 > r->u.composite.run_length) {
+		pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  x1 - x0, h);
+		mask = (uint8_t *)pixman_image_get_data (r->mask);
+		x0 = spans[1].x;
+	    }else {
+		memset (mask, spans[0].coverage, --len);
+		mask += len;
+	    }
+	}
+	x1 = spans[1].x;
+	spans++;
+    } while (--num_spans > 1);
+
+    if (x1 != x0) {
+	pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
+				  x0 + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  x0, y,
+				  x1 - x0, h);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_inplace_opacity_spans (void *abstract_renderer, int y, int h,
+			const cairo_half_open_span_t *spans,
+			unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    uint8_t *mask;
+    int x0, x1;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    mask = (uint8_t *)pixman_image_get_data (r->mask);
+    x1 = x0 = spans[0].x;
+    do {
+	int len = spans[1].x - spans[0].x;
+	uint8_t m = mul8_8(spans[0].coverage, r->bpp);
+	*mask++ = m;
+	if (len > 1) {
+	    if (m == 0 &&
+		x1 - x0 > r->u.composite.run_length) {
+		pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  x1 - x0, h);
+		mask = (uint8_t *)pixman_image_get_data (r->mask);
+		x0 = spans[1].x;
+	    }else {
+		memset (mask, m, --len);
+		mask += len;
+	    }
+	}
+	x1 = spans[1].x;
+	spans++;
+    } while (--num_spans > 1);
+
+    if (x1 != x0) {
+	pixman_image_composite32 (r->op, r->src, r->mask, r->u.composite.dst,
+				  x0 + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  x0, y,
+				  x1 - x0, h);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_inplace_src_spans (void *abstract_renderer, int y, int h,
+		    const cairo_half_open_span_t *spans,
+		    unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    uint8_t *m;
+    int x0;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    x0 = spans[0].x;
+    m = r->_buf;
+    do {
+	int len = spans[1].x - spans[0].x;
+	if (len >= r->u.composite.run_length && spans[0].coverage == 0xff) {
+	    if (spans[0].x != x0) {
+#if PIXMAN_HAS_OP_LERP
+		pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
+					  r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+#else
+		pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+					  r->mask, NULL, r->u.composite.dst,
+					  0, 0,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+		pixman_image_composite32 (PIXMAN_OP_ADD,
+					  r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+#endif
+	    }
+
+	    pixman_image_composite32 (PIXMAN_OP_SRC,
+				      r->src, NULL, r->u.composite.dst,
+				      spans[0].x + r->u.composite.src_x,
+				      y + r->u.composite.src_y,
+				      0, 0,
+				      spans[0].x, y,
+				      spans[1].x - spans[0].x, h);
+
+	    m = r->_buf;
+	    x0 = spans[1].x;
+	} else if (spans[0].coverage == 0x0) {
+	    if (spans[0].x != x0) {
+#if PIXMAN_HAS_OP_LERP
+		pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
+					  r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+#else
+		pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+					  r->mask, NULL, r->u.composite.dst,
+					  0, 0,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+		pixman_image_composite32 (PIXMAN_OP_ADD,
+					  r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+#endif
+	    }
+
+	    m = r->_buf;
+	    x0 = spans[1].x;
+	} else {
+	    *m++ = spans[0].coverage;
+	    if (len > 1) {
+		memset (m, spans[0].coverage, --len);
+		m += len;
+	    }
+	}
+	spans++;
+    } while (--num_spans > 1);
+
+    if (spans[0].x != x0) {
+#if PIXMAN_HAS_OP_LERP
+	pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
+				  r->src, r->mask, r->u.composite.dst,
+				  x0 + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  x0, y,
+				  spans[0].x - x0, h);
+#else
+	pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+				  r->mask, NULL, r->u.composite.dst,
+				  0, 0,
+				  0, 0,
+				  x0, y,
+				  spans[0].x - x0, h);
+	pixman_image_composite32 (PIXMAN_OP_ADD,
+				  r->src, r->mask, r->u.composite.dst,
+				  x0 + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  x0, y,
+				  spans[0].x - x0, h);
+#endif
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_inplace_src_opacity_spans (void *abstract_renderer, int y, int h,
+			    const cairo_half_open_span_t *spans,
+			    unsigned num_spans)
+{
+    cairo_image_span_renderer_t *r = abstract_renderer;
+    uint8_t *mask;
+    int x0;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    x0 = spans[0].x;
+    mask = (uint8_t *)pixman_image_get_data (r->mask);
+    do {
+	int len = spans[1].x - spans[0].x;
+	uint8_t m = mul8_8(spans[0].coverage, r->bpp);
+	if (m == 0) {
+	    if (spans[0].x != x0) {
+#if PIXMAN_HAS_OP_LERP
+		pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
+					  r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+#else
+		pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+					  r->mask, NULL, r->u.composite.dst,
+					  0, 0,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+		pixman_image_composite32 (PIXMAN_OP_ADD,
+					  r->src, r->mask, r->u.composite.dst,
+					  x0 + r->u.composite.src_x,
+					  y + r->u.composite.src_y,
+					  0, 0,
+					  x0, y,
+					  spans[0].x - x0, h);
+#endif
+	    }
+
+	    mask = (uint8_t *)pixman_image_get_data (r->mask);
+	    x0 = spans[1].x;
+	} else {
+	    *mask++ = m;
+	    if (len > 1) {
+		memset (mask, m, --len);
+		mask += len;
+	    }
+	}
+	spans++;
+    } while (--num_spans > 1);
+
+    if (spans[0].x != x0) {
+#if PIXMAN_HAS_OP_LERP
+	pixman_image_composite32 (PIXMAN_OP_LERP_SRC,
+				  r->src, r->mask, r->u.composite.dst,
+				  x0 + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  x0, y,
+				  spans[0].x - x0, h);
+#else
+	pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+				  r->mask, NULL, r->u.composite.dst,
+				  0, 0,
+				  0, 0,
+				  x0, y,
+				  spans[0].x - x0, h);
+	pixman_image_composite32 (PIXMAN_OP_ADD,
+				  r->src, r->mask, r->u.composite.dst,
+				  x0 + r->u.composite.src_x,
+				  y + r->u.composite.src_y,
+				  0, 0,
+				  x0, y,
+				  spans[0].x - x0, h);
+#endif
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void free_pixels (pixman_image_t *image, void *data)
+{
+	free (data);
+}
+
+static cairo_int_status_t
+inplace_renderer_init (cairo_image_span_renderer_t	*r,
+		       const cairo_composite_rectangles_t *composite,
+		       cairo_antialias_t		 antialias,
+		       cairo_bool_t			 needs_clip)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)composite->surface;
+    uint8_t *buf;
+
+    if (composite->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    r->base.render_rows = NULL;
+    r->bpp = composite->mask_pattern.solid.color.alpha_short >> 8;
+
+    if (composite->source_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_color_t *color;
+
+	color = &composite->source_pattern.solid.color;
+	if (composite->op == CAIRO_OPERATOR_CLEAR)
+	    color = CAIRO_COLOR_TRANSPARENT;
+
+	if (fill_reduces_to_source (composite->op, color, dst, &r->u.fill.pixel)) {
+	    /* Use plain C for the fill operations as the span length is
+	     * typically small, too small to payback the startup overheads of
+	     * using SSE2 etc.
+	     */
+	    if (r->bpp == 0xff) {
+		switch (dst->format) {
+		case CAIRO_FORMAT_A8:
+		    r->base.render_rows = _fill_a8_lerp_opaque_spans;
+		    break;
+		case CAIRO_FORMAT_RGB24:
+		case CAIRO_FORMAT_ARGB32:
+		    r->base.render_rows = _fill_xrgb32_lerp_opaque_spans;
+		    break;
+		case CAIRO_FORMAT_A1:
+		case CAIRO_FORMAT_RGB16_565:
+		case CAIRO_FORMAT_RGB30:
+		case CAIRO_FORMAT_INVALID:
+		default: break;
+		}
+	    } else {
+		switch (dst->format) {
+		case CAIRO_FORMAT_A8:
+		    r->base.render_rows = _fill_a8_lerp_spans;
+		    break;
+		case CAIRO_FORMAT_RGB24:
+		case CAIRO_FORMAT_ARGB32:
+		    r->base.render_rows = _fill_xrgb32_lerp_spans;
+		    break;
+		case CAIRO_FORMAT_A1:
+		case CAIRO_FORMAT_RGB16_565:
+		case CAIRO_FORMAT_RGB30:
+		case CAIRO_FORMAT_INVALID:
+		default: break;
+		}
+	    }
+	    r->u.fill.data = dst->data;
+	    r->u.fill.stride = dst->stride;
+	}
+    } else if ((dst->format == CAIRO_FORMAT_ARGB32 || dst->format == CAIRO_FORMAT_RGB24) &&
+	       (composite->op == CAIRO_OPERATOR_SOURCE ||
+		(composite->op == CAIRO_OPERATOR_OVER &&
+		 (dst->base.is_clear || (dst->base.content & CAIRO_CONTENT_ALPHA) == 0))) &&
+	       composite->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE &&
+	       composite->source_pattern.surface.surface->backend->type == CAIRO_SURFACE_TYPE_IMAGE &&
+	       to_image_surface(composite->source_pattern.surface.surface)->format == dst->format)
+    {
+       cairo_image_surface_t *src =
+	   to_image_surface(composite->source_pattern.surface.surface);
+       int tx, ty;
+
+	if (_cairo_matrix_is_integer_translation(&composite->source_pattern.base.matrix,
+						 &tx, &ty) &&
+	    composite->bounded.x + tx >= 0 &&
+	    composite->bounded.y + ty >= 0 &&
+	    composite->bounded.x + composite->bounded.width + tx <= src->width &&
+	    composite->bounded.y + composite->bounded.height + ty <= src->height) {
+
+	    assert(PIXMAN_FORMAT_BPP(dst->pixman_format) == 32);
+	    r->u.blit.stride = dst->stride;
+	    r->u.blit.data = dst->data;
+	    r->u.blit.src_stride = src->stride;
+	    r->u.blit.src_data = src->data + src->stride * ty + tx * 4;
+	    r->base.render_rows = _blit_xrgb32_lerp_spans;
+	}
+    }
+    if (r->base.render_rows == NULL) {
+	const cairo_pattern_t *src = &composite->source_pattern.base;
+	unsigned int width;
+
+	if (composite->is_bounded == 0)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	r->base.render_rows = r->bpp == 0xff ? _inplace_spans : _inplace_opacity_spans;
+	width = (composite->bounded.width + 3) & ~3;
+
+	r->u.composite.run_length = 8;
+	if (src->type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    src->type == CAIRO_PATTERN_TYPE_RADIAL)
+		r->u.composite.run_length = 256;
+	if (dst->base.is_clear &&
+	    (composite->op == CAIRO_OPERATOR_SOURCE ||
+	     composite->op == CAIRO_OPERATOR_OVER ||
+	     composite->op == CAIRO_OPERATOR_ADD)) {
+	    r->op = PIXMAN_OP_SRC;
+	} else if (composite->op == CAIRO_OPERATOR_SOURCE) {
+	    r->base.render_rows = r->bpp == 0xff ? _inplace_src_spans : _inplace_src_opacity_spans;
+	    r->u.composite.mask_y = r->composite->unbounded.y;
+	    width = (composite->unbounded.width + 3) & ~3;
+	} else if (composite->op == CAIRO_OPERATOR_CLEAR) {
+	    r->op = PIXMAN_OP_OUT_REVERSE;
+	    src = NULL;
+	} else {
+	    r->op = _pixman_operator (composite->op);
+	}
+
+	r->src = _pixman_image_for_pattern (dst, src, FALSE,
+					    &composite->bounded,
+					    &composite->source_sample_area,
+					    &r->u.composite.src_x, &r->u.composite.src_y);
+	if (unlikely (r->src == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	/* Create an effectively unbounded mask by repeating the single line */
+	buf = r->_buf;
+	if (width > SZ_BUF) {
+	    buf = _cairo_malloc (width);
+	    if (unlikely (buf == NULL)) {
+		pixman_image_unref (r->src);
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+	}
+	r->mask = pixman_image_create_bits (PIXMAN_a8,
+					    width, composite->unbounded.height,
+					    (uint32_t *)buf, 0);
+	if (unlikely (r->mask == NULL)) {
+	    pixman_image_unref (r->src);
+	    if (buf != r->_buf)
+		free (buf);
+	    return _cairo_error(CAIRO_STATUS_NO_MEMORY);
+	}
+
+	if (buf != r->_buf)
+	    pixman_image_set_destroy_function (r->mask, free_pixels, buf);
+
+	r->u.composite.dst = dst->pixman_image;
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+span_renderer_init (cairo_abstract_span_renderer_t	*_r,
+		    const cairo_composite_rectangles_t *composite,
+		    cairo_antialias_t			 antialias,
+		    cairo_bool_t			 needs_clip)
+{
+    cairo_image_span_renderer_t *r = (cairo_image_span_renderer_t *)_r;
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)composite->surface;
+    const cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_operator_t op = composite->op;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s: antialias=%d, needs_clip=%d\n", __FUNCTION__,
+	    antialias, needs_clip));
+
+    if (needs_clip)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    r->composite = composite;
+    r->mask = NULL;
+    r->src = NULL;
+    r->base.finish = NULL;
+
+    status = mono_renderer_init (r, composite, antialias, needs_clip);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = inplace_renderer_init (r, composite, antialias, needs_clip);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    r->bpp = 0;
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+#if PIXMAN_HAS_OP_LERP
+	op = PIXMAN_OP_LERP_CLEAR;
+#else
+	source = &_cairo_pattern_white.base;
+	op = PIXMAN_OP_OUT_REVERSE;
+#endif
+    } else if (dst->base.is_clear &&
+	       (op == CAIRO_OPERATOR_SOURCE ||
+		op == CAIRO_OPERATOR_OVER ||
+		op == CAIRO_OPERATOR_ADD)) {
+	op = PIXMAN_OP_SRC;
+    } else if (op == CAIRO_OPERATOR_SOURCE) {
+	if (_cairo_pattern_is_opaque (&composite->source_pattern.base,
+				      &composite->source_sample_area))
+	{
+	    op = PIXMAN_OP_OVER;
+	}
+	else
+	{
+#if PIXMAN_HAS_OP_LERP
+	    op = PIXMAN_OP_LERP_SRC;
+#else
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+#endif
+	}
+    } else {
+	op = _pixman_operator (op);
+    }
+    r->op = op;
+
+    r->src = _pixman_image_for_pattern (dst, source, FALSE,
+					&composite->unbounded,
+					&composite->source_sample_area,
+					&r->u.mask.src_x, &r->u.mask.src_y);
+    if (unlikely (r->src == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    r->opacity = 1.0;
+    if (composite->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID) {
+	r->opacity = composite->mask_pattern.solid.color.alpha;
+    } else {
+	pixman_image_t *mask;
+	int mask_x, mask_y;
+
+	mask = _pixman_image_for_pattern (dst,
+					  &composite->mask_pattern.base,
+					  TRUE,
+					  &composite->unbounded,
+					  &composite->mask_sample_area,
+					  &mask_x, &mask_y);
+	if (unlikely (mask == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	/* XXX Component-alpha? */
+	if ((dst->base.content & CAIRO_CONTENT_COLOR) == 0 &&
+	    _cairo_pattern_is_opaque (source, &composite->source_sample_area))
+	{
+	    pixman_image_unref (r->src);
+	    r->src = mask;
+	    r->u.mask.src_x = mask_x;
+	    r->u.mask.src_y = mask_y;
+	    mask = NULL;
+	}
+
+	if (mask) {
+	    pixman_image_unref (mask);
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	}
+    }
+
+    r->u.mask.extents = composite->unbounded;
+    r->u.mask.stride = (r->u.mask.extents.width + 3) & ~3;
+    if (r->u.mask.extents.height * r->u.mask.stride > SZ_BUF) {
+	r->mask = pixman_image_create_bits (PIXMAN_a8,
+					    r->u.mask.extents.width,
+					    r->u.mask.extents.height,
+					    NULL, 0);
+
+	r->base.render_rows = _cairo_image_spans;
+	r->base.finish = NULL;
+    } else {
+	r->mask = pixman_image_create_bits (PIXMAN_a8,
+					    r->u.mask.extents.width,
+					    r->u.mask.extents.height,
+					    (uint32_t *)r->_buf, r->u.mask.stride);
+
+	r->base.render_rows = _cairo_image_spans_and_zero;
+	r->base.finish = _cairo_image_finish_spans_and_zero;
+    }
+    if (unlikely (r->mask == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    r->u.mask.data = (uint8_t *) pixman_image_get_data (r->mask);
+    r->u.mask.stride = pixman_image_get_stride (r->mask);
+
+    r->u.mask.extents.height += r->u.mask.extents.y;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+span_renderer_fini (cairo_abstract_span_renderer_t *_r,
+		    cairo_int_status_t status)
+{
+    cairo_image_span_renderer_t *r = (cairo_image_span_renderer_t *) _r;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	if (r->base.finish)
+	    r->base.finish (r);
+    }
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS && r->bpp == 0)) {
+	const cairo_composite_rectangles_t *composite = r->composite;
+
+	pixman_image_composite32 (r->op, r->src, r->mask,
+				  to_pixman_image (composite->surface),
+				  composite->unbounded.x + r->u.mask.src_x,
+				  composite->unbounded.y + r->u.mask.src_y,
+				  0, 0,
+				  composite->unbounded.x,
+				  composite->unbounded.y,
+				  composite->unbounded.width,
+				  composite->unbounded.height);
+    }
+
+    if (r->src)
+	pixman_image_unref (r->src);
+    if (r->mask)
+	pixman_image_unref (r->mask);
+}
+#endif
+
+const cairo_compositor_t *
+_cairo_image_spans_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_spans_compositor_t spans;
+    static cairo_compositor_t shape;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_shape_mask_compositor_init (&shape,
+					   _cairo_image_traps_compositor_get());
+	shape.glyphs = NULL;
+
+	_cairo_spans_compositor_init (&spans, &shape);
+
+	spans.flags = 0;
+#if PIXMAN_HAS_OP_LERP
+	spans.flags |= CAIRO_SPANS_COMPOSITOR_HAS_LERP;
+#endif
+
+	//spans.acquire = acquire;
+	//spans.release = release;
+	spans.fill_boxes = fill_boxes;
+	spans.draw_image_boxes = draw_image_boxes;
+	//spans.copy_boxes = copy_boxes;
+	spans.pattern_to_surface = _cairo_image_source_create_for_pattern;
+	//spans.check_composite_boxes = check_composite_boxes;
+	spans.composite_boxes = composite_boxes;
+	//spans.check_span_renderer = check_span_renderer;
+	spans.renderer_init = span_renderer_init;
+	spans.renderer_fini = span_renderer_fini;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &spans.base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-image-info-private.h b/libs/cairo-1.16.0/src/cairo-image-info-private.h
new file mode 100644
index 0000000..e64928e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-info-private.h
@@ -0,0 +1,68 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_IMAGE_INFO_PRIVATE_H
+#define CAIRO_IMAGE_INFO_PRIVATE_H
+
+#include "cairoint.h"
+
+typedef struct _cairo_image_info {
+    int		 width;
+    int		 height;
+    int		 num_components;
+    int		 bits_per_component;
+} cairo_image_info_t;
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_jpeg_info (cairo_image_info_t	*info,
+				 const unsigned char	*data,
+				 long			 length);
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_jpx_info (cairo_image_info_t	*info,
+				const unsigned char	*data,
+				unsigned long		 length);
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_png_info (cairo_image_info_t	*info,
+				const unsigned char     *data,
+				unsigned long            length);
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_jbig2_info (cairo_image_info_t	*info,
+				  const unsigned char	*data,
+				  unsigned long		 length);
+
+#endif /* CAIRO_IMAGE_INFO_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-image-info.c b/libs/cairo-1.16.0/src/cairo-image-info.c
new file mode 100644
index 0000000..d147e37
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-info.c
@@ -0,0 +1,421 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-info-private.h"
+
+/* JPEG (image/jpeg)
+ *
+ * http://www.w3.org/Graphics/JPEG/itu-t81.pdf
+ */
+
+/* Markers with no parameters. All other markers are followed by a two
+ * byte length of the parameters. */
+#define TEM       0x01
+#define RST_begin 0xd0
+#define RST_end   0xd7
+#define SOI       0xd8
+#define EOI       0xd9
+
+/* Start of frame markers. */
+#define SOF0  0xc0
+#define SOF1  0xc1
+#define SOF2  0xc2
+#define SOF3  0xc3
+#define SOF5  0xc5
+#define SOF6  0xc6
+#define SOF7  0xc7
+#define SOF9  0xc9
+#define SOF10 0xca
+#define SOF11 0xcb
+#define SOF13 0xcd
+#define SOF14 0xce
+#define SOF15 0xcf
+
+static const unsigned char *
+_jpeg_skip_segment (const unsigned char *p)
+{
+    int len;
+
+    p++;
+    len = (p[0] << 8) | p[1];
+
+    return p + len;
+}
+
+static void
+_jpeg_extract_info (cairo_image_info_t *info, const unsigned char *p)
+{
+    info->width = (p[6] << 8) + p[7];
+    info->height = (p[4] << 8) + p[5];
+    info->num_components = p[8];
+    info->bits_per_component = p[3];
+}
+
+cairo_int_status_t
+_cairo_image_info_get_jpeg_info (cairo_image_info_t	*info,
+				 const unsigned char	*data,
+				 long			 length)
+{
+    const unsigned char *p = data;
+
+    while (p + 1 < data + length) {
+	if (*p != 0xff)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	p++;
+
+	switch (*p) {
+	    /* skip fill bytes */
+	case 0xff:
+	    p++;
+	    break;
+
+	case TEM:
+	case SOI:
+	case EOI:
+	    p++;
+	    break;
+
+	case SOF0:
+	case SOF1:
+	case SOF2:
+	case SOF3:
+	case SOF5:
+	case SOF6:
+	case SOF7:
+	case SOF9:
+	case SOF10:
+	case SOF11:
+	case SOF13:
+	case SOF14:
+	case SOF15:
+	    /* Start of frame found. Extract the image parameters. */
+	    if (p + 8 > data + length)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	    _jpeg_extract_info (info, p);
+	    return CAIRO_STATUS_SUCCESS;
+
+	default:
+	    if (*p >= RST_begin && *p <= RST_end) {
+		p++;
+		break;
+	    }
+
+	    if (p + 3 > data + length)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	    p = _jpeg_skip_segment (p);
+	    break;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* JPEG 2000 (image/jp2)
+ *
+ * http://www.jpeg.org/public/15444-1annexi.pdf
+ */
+
+#define JPX_FILETYPE 0x66747970
+#define JPX_JP2_HEADER 0x6A703268
+#define JPX_IMAGE_HEADER 0x69686472
+
+static const unsigned char _jpx_signature[] = {
+    0x00, 0x00, 0x00, 0x0c, 0x6a, 0x50, 0x20, 0x20, 0x0d, 0x0a, 0x87, 0x0a
+};
+
+static const unsigned char *
+_jpx_next_box (const unsigned char *p)
+{
+    return p + get_unaligned_be32 (p);
+}
+
+static const unsigned char *
+_jpx_get_box_contents (const unsigned char *p)
+{
+    return p + 8;
+}
+
+static cairo_bool_t
+_jpx_match_box (const unsigned char *p, const unsigned char *end, uint32_t type)
+{
+    uint32_t length;
+
+    if (p + 8 < end) {
+	length = get_unaligned_be32 (p);
+	if (get_unaligned_be32 (p + 4) == type &&  p + length < end)
+	    return TRUE;
+    }
+
+    return FALSE;
+}
+
+static const unsigned char *
+_jpx_find_box (const unsigned char *p, const unsigned char *end, uint32_t type)
+{
+    while (p < end) {
+	if (_jpx_match_box (p, end, type))
+	    return p;
+	p = _jpx_next_box (p);
+    }
+
+    return NULL;
+}
+
+static void
+_jpx_extract_info (const unsigned char *p, cairo_image_info_t *info)
+{
+    info->height = get_unaligned_be32 (p);
+    info->width = get_unaligned_be32 (p + 4);
+    info->num_components = (p[8] << 8) + p[9];
+    info->bits_per_component = p[10];
+}
+
+cairo_int_status_t
+_cairo_image_info_get_jpx_info (cairo_image_info_t	*info,
+				const unsigned char	*data,
+				unsigned long		 length)
+{
+    const unsigned char *p = data;
+    const unsigned char *end = data + length;
+
+    /* First 12 bytes must be the JPEG 2000 signature box. */
+    if (length < ARRAY_LENGTH(_jpx_signature) ||
+	memcmp(p, _jpx_signature, ARRAY_LENGTH(_jpx_signature)) != 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += ARRAY_LENGTH(_jpx_signature);
+
+    /* Next box must be a File Type Box */
+    if (! _jpx_match_box (p, end, JPX_FILETYPE))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p = _jpx_next_box (p);
+
+    /* Locate the JP2 header box. */
+    p = _jpx_find_box (p, end, JPX_JP2_HEADER);
+    if (!p)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Step into the JP2 header box. First box must be the Image
+     * Header */
+    p = _jpx_get_box_contents (p);
+    if (! _jpx_match_box (p, end, JPX_IMAGE_HEADER))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Get the image info */
+    p = _jpx_get_box_contents (p);
+    _jpx_extract_info (p, info);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* PNG (image/png)
+ *
+ * http://www.w3.org/TR/2003/REC-PNG-20031110/
+ */
+
+#define PNG_IHDR 0x49484452
+
+static const unsigned char _png_magic[8] = { 137, 80, 78, 71, 13, 10, 26, 10 };
+
+cairo_int_status_t
+_cairo_image_info_get_png_info (cairo_image_info_t     *info,
+                               const unsigned char     *data,
+                               unsigned long            length)
+{
+    const unsigned char *p = data;
+    const unsigned char *end = data + length;
+
+    if (length < 8 || memcmp (data, _png_magic, 8) != 0)
+       return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += 8;
+
+    /* The first chunk must be IDHR. IDHR has 13 bytes of data plus
+     * the 12 bytes of overhead for the chunk. */
+    if (p + 13 + 12 > end)
+       return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += 4;
+    if (get_unaligned_be32 (p) != PNG_IHDR)
+       return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += 4;
+    info->width = get_unaligned_be32 (p);
+    p += 4;
+    info->height = get_unaligned_be32 (p);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const unsigned char *
+_jbig2_find_data_end (const unsigned char *p,
+		      const unsigned char *end,
+		      int                  type)
+{
+    unsigned char end_seq[2];
+    int mmr;
+
+    /* Segments of type "Immediate generic region" may have an
+     * unspecified data length.  The JBIG2 specification specifies the
+     * method to find the end of the data for these segments. */
+    if (type == 36 || type == 38 || type == 39) {
+	if (p + 18 < end) {
+	    mmr = p[17] & 0x01;
+	    if (mmr) {
+		/* MMR encoding ends with 0x00, 0x00 */
+		end_seq[0] = 0x00;
+		end_seq[1] = 0x00;
+	    } else {
+		/* Template encoding ends with 0xff, 0xac */
+		end_seq[0] = 0xff;
+		end_seq[1] = 0xac;
+	    }
+	    p += 18;
+	    while (p < end) {
+		if (p[0] == end_seq[0] && p[1] == end_seq[1]) {
+		    /* Skip the 2 terminating bytes and the 4 byte row count that follows. */
+		    p += 6;
+		    if (p < end)
+			return p;
+		}
+		p++;
+	    }
+	}
+    }
+
+    return NULL;
+}
+
+static const unsigned char *
+_jbig2_get_next_segment (const unsigned char  *p,
+			 const unsigned char  *end,
+			 int                  *type,
+			 const unsigned char **data,
+			 unsigned long        *data_len)
+{
+    unsigned long seg_num;
+    cairo_bool_t big_page_size;
+    int num_segs;
+    int ref_seg_bytes;
+    int referred_size;
+
+    if (p + 6 >= end)
+	return NULL;
+
+    seg_num = get_unaligned_be32 (p);
+    *type = p[4] & 0x3f;
+    big_page_size = (p[4] & 0x40) != 0;
+    p += 5;
+
+    num_segs = p[0] >> 5;
+    if (num_segs == 7) {
+	num_segs = get_unaligned_be32 (p) & 0x1fffffff;
+	ref_seg_bytes = 4 + ((num_segs + 1)/8);
+    } else {
+	ref_seg_bytes = 1;
+    }
+    p += ref_seg_bytes;
+
+    if (seg_num <= 256)
+	referred_size = 1;
+    else if (seg_num <= 65536)
+	referred_size = 2;
+    else
+	referred_size = 4;
+
+    p += num_segs * referred_size;
+    p += big_page_size ? 4 : 1;
+    if (p + 4 >= end)
+	return NULL;
+
+    *data_len = get_unaligned_be32 (p);
+    p += 4;
+    *data = p;
+
+    if (*data_len == 0xffffffff) {
+	/* if data length is -1 we have to scan through the data to find the end */
+	p = _jbig2_find_data_end (*data, end, *type);
+	if (!p || p >= end)
+	    return NULL;
+
+	*data_len = p - *data;
+    } else {
+	p += *data_len;
+    }
+
+    if (p < end)
+	return p;
+    else
+	return NULL;
+}
+
+static void
+_jbig2_extract_info (cairo_image_info_t *info, const unsigned char *p)
+{
+    info->width = get_unaligned_be32 (p);
+    info->height = get_unaligned_be32 (p + 4);
+    info->num_components = 1;
+    info->bits_per_component = 1;
+}
+
+cairo_int_status_t
+_cairo_image_info_get_jbig2_info (cairo_image_info_t	*info,
+				  const unsigned char	*data,
+				  unsigned long		 length)
+{
+    const unsigned char *p = data;
+    const unsigned char *end = data + length;
+    int seg_type;
+    const unsigned char *seg_data;
+    unsigned long seg_data_len;
+
+    while (p && p < end) {
+	p = _jbig2_get_next_segment (p, end, &seg_type, &seg_data, &seg_data_len);
+	if (p && seg_type == 48 && seg_data_len > 8) {
+	    /* page information segment */
+	    _jbig2_extract_info (info, seg_data);
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-image-source.c b/libs/cairo-1.16.0/src/cairo-image-source.c
new file mode 100644
index 0000000..0b50afc
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-source.c
@@ -0,0 +1,1621 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ * Copyright © 2009,2010,2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* The purpose of this file/surface is to simply translate a pattern
+ * to a pixman_image_t and thence to feed it back to the general
+ * compositor interface.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-image-surface-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-error-private.h"
+#include "cairo-pattern-inline.h"
+#include "cairo-paginated-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-observer-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-private.h"
+
+#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
+
+#if CAIRO_NO_MUTEX
+#define PIXMAN_HAS_ATOMIC_OPS 1
+#endif
+
+#if PIXMAN_HAS_ATOMIC_OPS
+static pixman_image_t *__pixman_transparent_image;
+static pixman_image_t *__pixman_black_image;
+static pixman_image_t *__pixman_white_image;
+
+static pixman_image_t *
+_pixman_transparent_image (void)
+{
+    pixman_image_t *image;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = __pixman_transparent_image;
+    if (unlikely (image == NULL)) {
+	pixman_color_t color;
+
+	color.red   = 0x00;
+	color.green = 0x00;
+	color.blue  = 0x00;
+	color.alpha = 0x00;
+
+	image = pixman_image_create_solid_fill (&color);
+	if (unlikely (image == NULL))
+	    return NULL;
+
+	if (_cairo_atomic_ptr_cmpxchg (&__pixman_transparent_image,
+				       NULL, image))
+	{
+	    pixman_image_ref (image);
+	}
+    } else {
+	pixman_image_ref (image);
+    }
+
+    return image;
+}
+
+static pixman_image_t *
+_pixman_black_image (void)
+{
+    pixman_image_t *image;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = __pixman_black_image;
+    if (unlikely (image == NULL)) {
+	pixman_color_t color;
+
+	color.red   = 0x00;
+	color.green = 0x00;
+	color.blue  = 0x00;
+	color.alpha = 0xffff;
+
+	image = pixman_image_create_solid_fill (&color);
+	if (unlikely (image == NULL))
+	    return NULL;
+
+	if (_cairo_atomic_ptr_cmpxchg (&__pixman_black_image,
+				       NULL, image))
+	{
+	    pixman_image_ref (image);
+	}
+    } else {
+	pixman_image_ref (image);
+    }
+
+    return image;
+}
+
+static pixman_image_t *
+_pixman_white_image (void)
+{
+    pixman_image_t *image;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    image = __pixman_white_image;
+    if (unlikely (image == NULL)) {
+	pixman_color_t color;
+
+	color.red   = 0xffff;
+	color.green = 0xffff;
+	color.blue  = 0xffff;
+	color.alpha = 0xffff;
+
+	image = pixman_image_create_solid_fill (&color);
+	if (unlikely (image == NULL))
+	    return NULL;
+
+	if (_cairo_atomic_ptr_cmpxchg (&__pixman_white_image,
+				       NULL, image))
+	{
+	    pixman_image_ref (image);
+	}
+    } else {
+	pixman_image_ref (image);
+    }
+
+    return image;
+}
+
+static uint32_t
+hars_petruska_f54_1_random (void)
+{
+#define rol(x,k) ((x << k) | (x >> (32-k)))
+    static uint32_t x;
+    return x = (x ^ rol (x, 5) ^ rol (x, 24)) + 0x37798849;
+#undef rol
+}
+
+static struct {
+    cairo_color_t color;
+    pixman_image_t *image;
+} cache[16];
+static int n_cached;
+
+#else  /* !PIXMAN_HAS_ATOMIC_OPS */
+static pixman_image_t *
+_pixman_transparent_image (void)
+{
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return _pixman_image_for_color (CAIRO_COLOR_TRANSPARENT);
+}
+
+static pixman_image_t *
+_pixman_black_image (void)
+{
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return _pixman_image_for_color (CAIRO_COLOR_BLACK);
+}
+
+static pixman_image_t *
+_pixman_white_image (void)
+{
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return _pixman_image_for_color (CAIRO_COLOR_WHITE);
+}
+#endif /* !PIXMAN_HAS_ATOMIC_OPS */
+
+
+pixman_image_t *
+_pixman_image_for_color (const cairo_color_t *cairo_color)
+{
+    pixman_color_t color;
+    pixman_image_t *image;
+
+#if PIXMAN_HAS_ATOMIC_OPS
+    int i;
+
+    if (CAIRO_COLOR_IS_CLEAR (cairo_color))
+	return _pixman_transparent_image ();
+
+    if (CAIRO_COLOR_IS_OPAQUE (cairo_color)) {
+	if (cairo_color->red_short <= 0x00ff &&
+	    cairo_color->green_short <= 0x00ff &&
+	    cairo_color->blue_short <= 0x00ff)
+	{
+	    return _pixman_black_image ();
+	}
+
+	if (cairo_color->red_short >= 0xff00 &&
+	    cairo_color->green_short >= 0xff00 &&
+	    cairo_color->blue_short >= 0xff00)
+	{
+	    return _pixman_white_image ();
+	}
+    }
+
+    CAIRO_MUTEX_LOCK (_cairo_image_solid_cache_mutex);
+    for (i = 0; i < n_cached; i++) {
+	if (_cairo_color_equal (&cache[i].color, cairo_color)) {
+	    image = pixman_image_ref (cache[i].image);
+	    goto UNLOCK;
+	}
+    }
+#endif
+
+    color.red   = cairo_color->red_short;
+    color.green = cairo_color->green_short;
+    color.blue  = cairo_color->blue_short;
+    color.alpha = cairo_color->alpha_short;
+
+    image = pixman_image_create_solid_fill (&color);
+#if PIXMAN_HAS_ATOMIC_OPS
+    if (image == NULL)
+	goto UNLOCK;
+
+    if (n_cached < ARRAY_LENGTH (cache)) {
+	i = n_cached++;
+    } else {
+	i = hars_petruska_f54_1_random () % ARRAY_LENGTH (cache);
+	pixman_image_unref (cache[i].image);
+    }
+    cache[i].image = pixman_image_ref (image);
+    cache[i].color = *cairo_color;
+
+UNLOCK:
+    CAIRO_MUTEX_UNLOCK (_cairo_image_solid_cache_mutex);
+#endif
+    return image;
+}
+
+
+void
+_cairo_image_reset_static_data (void)
+{
+#if PIXMAN_HAS_ATOMIC_OPS
+    while (n_cached)
+	pixman_image_unref (cache[--n_cached].image);
+
+    if (__pixman_transparent_image) {
+	pixman_image_unref (__pixman_transparent_image);
+	__pixman_transparent_image = NULL;
+    }
+
+    if (__pixman_black_image) {
+	pixman_image_unref (__pixman_black_image);
+	__pixman_black_image = NULL;
+    }
+
+    if (__pixman_white_image) {
+	pixman_image_unref (__pixman_white_image);
+	__pixman_white_image = NULL;
+    }
+#endif
+}
+
+static pixman_image_t *
+_pixman_image_for_gradient (const cairo_gradient_pattern_t *pattern,
+			    const cairo_rectangle_int_t *extents,
+			    int *ix, int *iy)
+{
+    pixman_image_t	  *pixman_image;
+    pixman_gradient_stop_t pixman_stops_static[2];
+    pixman_gradient_stop_t *pixman_stops = pixman_stops_static;
+    pixman_transform_t      pixman_transform;
+    cairo_matrix_t matrix;
+    cairo_circle_double_t extremes[2];
+    pixman_point_fixed_t p1, p2;
+    unsigned int i;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (pattern->n_stops > ARRAY_LENGTH(pixman_stops_static)) {
+	pixman_stops = _cairo_malloc_ab (pattern->n_stops,
+					 sizeof(pixman_gradient_stop_t));
+	if (unlikely (pixman_stops == NULL))
+	    return NULL;
+    }
+
+    for (i = 0; i < pattern->n_stops; i++) {
+	pixman_stops[i].x = _cairo_fixed_16_16_from_double (pattern->stops[i].offset);
+	pixman_stops[i].color.red   = pattern->stops[i].color.red_short;
+	pixman_stops[i].color.green = pattern->stops[i].color.green_short;
+	pixman_stops[i].color.blue  = pattern->stops[i].color.blue_short;
+	pixman_stops[i].color.alpha = pattern->stops[i].color.alpha_short;
+    }
+
+    _cairo_gradient_pattern_fit_to_range (pattern, PIXMAN_MAX_INT >> 1, &matrix, extremes);
+
+    p1.x = _cairo_fixed_16_16_from_double (extremes[0].center.x);
+    p1.y = _cairo_fixed_16_16_from_double (extremes[0].center.y);
+    p2.x = _cairo_fixed_16_16_from_double (extremes[1].center.x);
+    p2.y = _cairo_fixed_16_16_from_double (extremes[1].center.y);
+
+    if (pattern->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	pixman_image = pixman_image_create_linear_gradient (&p1, &p2,
+							    pixman_stops,
+							    pattern->n_stops);
+    } else {
+	pixman_fixed_t r1, r2;
+
+	r1   = _cairo_fixed_16_16_from_double (extremes[0].radius);
+	r2   = _cairo_fixed_16_16_from_double (extremes[1].radius);
+
+	pixman_image = pixman_image_create_radial_gradient (&p1, &p2, r1, r2,
+							    pixman_stops,
+							    pattern->n_stops);
+    }
+
+    if (pixman_stops != pixman_stops_static)
+	free (pixman_stops);
+
+    if (unlikely (pixman_image == NULL))
+	return NULL;
+
+    *ix = *iy = 0;
+    status = _cairo_matrix_to_pixman_matrix_offset (&matrix, pattern->base.filter,
+						    extents->x + extents->width/2.,
+						    extents->y + extents->height/2.,
+						    &pixman_transform, ix, iy);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	if (unlikely (status != CAIRO_INT_STATUS_SUCCESS) ||
+	    ! pixman_image_set_transform (pixman_image, &pixman_transform))
+	{
+	    pixman_image_unref (pixman_image);
+	    return NULL;
+	}
+    }
+
+    {
+	pixman_repeat_t pixman_repeat;
+
+	switch (pattern->base.extend) {
+	default:
+	case CAIRO_EXTEND_NONE:
+	    pixman_repeat = PIXMAN_REPEAT_NONE;
+	    break;
+	case CAIRO_EXTEND_REPEAT:
+	    pixman_repeat = PIXMAN_REPEAT_NORMAL;
+	    break;
+	case CAIRO_EXTEND_REFLECT:
+	    pixman_repeat = PIXMAN_REPEAT_REFLECT;
+	    break;
+	case CAIRO_EXTEND_PAD:
+	    pixman_repeat = PIXMAN_REPEAT_PAD;
+	    break;
+	}
+
+	pixman_image_set_repeat (pixman_image, pixman_repeat);
+    }
+
+    return pixman_image;
+}
+
+static pixman_image_t *
+_pixman_image_for_mesh (const cairo_mesh_pattern_t *pattern,
+			const cairo_rectangle_int_t *extents,
+			int *tx, int *ty)
+{
+    pixman_image_t *image;
+    int width, height;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    *tx = -extents->x;
+    *ty = -extents->y;
+    width = extents->width;
+    height = extents->height;
+
+    image = pixman_image_create_bits (PIXMAN_a8r8g8b8, width, height, NULL, 0);
+    if (unlikely (image == NULL))
+	return NULL;
+
+    _cairo_mesh_pattern_rasterize (pattern,
+				   pixman_image_get_data (image),
+				   width, height,
+				   pixman_image_get_stride (image),
+				   *tx, *ty);
+    return image;
+}
+
+struct acquire_source_cleanup {
+    cairo_surface_t *surface;
+    cairo_image_surface_t *image;
+    void *image_extra;
+};
+
+static void
+_acquire_source_cleanup (pixman_image_t *pixman_image,
+			 void *closure)
+{
+    struct acquire_source_cleanup *data = closure;
+
+    _cairo_surface_release_source_image (data->surface,
+					 data->image,
+					 data->image_extra);
+    free (data);
+}
+
+static void
+_defer_free_cleanup (pixman_image_t *pixman_image,
+		     void *closure)
+{
+    cairo_surface_destroy (closure);
+}
+
+static uint16_t
+expand_channel (uint16_t v, uint32_t bits)
+{
+    int offset = 16 - bits;
+    while (offset > 0) {
+	v |= v >> bits;
+	offset -= bits;
+	bits += bits;
+    }
+    return v;
+}
+
+static pixman_image_t *
+_pixel_to_solid (cairo_image_surface_t *image, int x, int y)
+{
+    uint32_t pixel;
+    pixman_color_t color;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    switch (image->format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
+	return NULL;
+
+    case CAIRO_FORMAT_A1:
+	pixel = *(uint8_t *) (image->data + y * image->stride + x/8);
+	return pixel & (1 << (x&7)) ? _pixman_black_image () : _pixman_transparent_image ();
+
+    case CAIRO_FORMAT_A8:
+	color.alpha = *(uint8_t *) (image->data + y * image->stride + x);
+	color.alpha |= color.alpha << 8;
+	if (color.alpha == 0)
+	    return _pixman_transparent_image ();
+	if (color.alpha == 0xffff)
+	    return _pixman_black_image ();
+
+	color.red = color.green = color.blue = 0;
+	return pixman_image_create_solid_fill (&color);
+
+    case CAIRO_FORMAT_RGB16_565:
+	pixel = *(uint16_t *) (image->data + y * image->stride + 2 * x);
+	if (pixel == 0)
+	    return _pixman_black_image ();
+	if (pixel == 0xffff)
+	    return _pixman_white_image ();
+
+	color.alpha = 0xffff;
+	color.red = expand_channel ((pixel >> 11 & 0x1f) << 11, 5);
+	color.green = expand_channel ((pixel >> 5 & 0x3f) << 10, 6);
+	color.blue = expand_channel ((pixel & 0x1f) << 11, 5);
+	return pixman_image_create_solid_fill (&color);
+
+    case CAIRO_FORMAT_RGB30:
+	pixel = *(uint32_t *) (image->data + y * image->stride + 4 * x);
+	pixel &= 0x3fffffff; /* ignore alpha bits */
+	if (pixel == 0)
+	    return _pixman_black_image ();
+	if (pixel == 0x3fffffff)
+	    return _pixman_white_image ();
+
+	/* convert 10bpc to 16bpc */
+	color.alpha = 0xffff;
+	color.red = expand_channel((pixel >> 20) & 0x3fff, 10);
+	color.green = expand_channel((pixel >> 10) & 0x3fff, 10);
+	color.blue = expand_channel(pixel & 0x3fff, 10);
+	return pixman_image_create_solid_fill (&color);
+
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+	pixel = *(uint32_t *) (image->data + y * image->stride + 4 * x);
+	color.alpha = image->format == CAIRO_FORMAT_ARGB32 ? (pixel >> 24) | (pixel >> 16 & 0xff00) : 0xffff;
+	if (color.alpha == 0)
+	    return _pixman_transparent_image ();
+	if (pixel == 0xffffffff)
+	    return _pixman_white_image ();
+	if (color.alpha == 0xffff && (pixel & 0xffffff) == 0)
+	    return _pixman_black_image ();
+
+	color.red = (pixel >> 16 & 0xff) | (pixel >> 8 & 0xff00);
+	color.green = (pixel >> 8 & 0xff) | (pixel & 0xff00);
+	color.blue = (pixel & 0xff) | (pixel << 8 & 0xff00);
+	return pixman_image_create_solid_fill (&color);
+    }
+}
+
+/* ========================================================================== */
+
+/* Index into filter table */
+typedef enum
+{
+    KERNEL_IMPULSE,
+    KERNEL_BOX,
+    KERNEL_LINEAR,
+    KERNEL_MITCHELL,
+    KERNEL_NOTCH,
+    KERNEL_CATMULL_ROM,
+    KERNEL_LANCZOS3,
+    KERNEL_LANCZOS3_STRETCHED,
+    KERNEL_TENT
+} kernel_t;
+
+/* Produce contribution of a filter of size r for pixel centered on x.
+   For a typical low-pass function this evaluates the function at x/r.
+   If the frequency is higher than 1/2, such as when r is less than 1,
+   this may need to integrate several samples, see cubic for examples.
+*/
+typedef double (* kernel_func_t) (double x, double r);
+
+/* Return maximum number of pixels that will be non-zero. Except for
+   impluse this is the maximum of 2 and the width of the non-zero part
+   of the filter rounded up to the next integer.
+*/
+typedef int (* kernel_width_func_t) (double r);
+
+/* Table of filters */
+typedef struct
+{
+    kernel_t		kernel;
+    kernel_func_t	func;
+    kernel_width_func_t	width;
+} filter_info_t;
+
+/* PIXMAN_KERNEL_IMPULSE: Returns pixel nearest the center.  This
+   matches PIXMAN_FILTER_NEAREST. This is useful if you wish to
+   combine the result of nearest in one direction with another filter
+   in the other.
+*/
+
+static double
+impulse_kernel (double x, double r)
+{
+    return 1;
+}
+
+static int
+impulse_width (double r)
+{
+    return 1;
+}
+
+/* PIXMAN_KERNEL_BOX: Intersection of a box of width r with square
+   pixels. This is the smallest possible filter such that the output
+   image contains an equal contribution from all the input
+   pixels. Lots of software uses this. The function is a trapazoid of
+   width r+1, not a box.
+
+   When r == 1.0, PIXMAN_KERNEL_BOX, PIXMAN_KERNEL_LINEAR, and
+   PIXMAN_KERNEL_TENT all produce the same filter, allowing
+   them to be exchanged at this point.
+*/
+
+static double
+box_kernel (double x, double r)
+{
+    return MAX (0.0, MIN (MIN (r, 1.0),
+			  MIN ((r + 1) / 2 - x, (r + 1) / 2 + x)));
+}
+
+static int
+box_width (double r)
+{
+    return r < 1.0 ? 2 : ceil(r + 1);
+}
+
+/* PIXMAN_KERNEL_LINEAR: Weighted sum of the two pixels nearest the
+   center, or a triangle of width 2. This matches
+   PIXMAN_FILTER_BILINEAR. This is useful if you wish to combine the
+   result of bilinear in one direction with another filter in the
+   other.  This is not a good filter if r > 1. You may actually want
+   PIXMAN_FILTER_TENT.
+
+   When r == 1.0, PIXMAN_KERNEL_BOX, PIXMAN_KERNEL_LINEAR, and
+   PIXMAN_KERNEL_TENT all produce the same filter, allowing
+   them to be exchanged at this point.
+*/
+
+static double
+linear_kernel (double x, double r)
+{
+    return MAX (1.0 - fabs(x), 0.0);
+}
+
+static int
+linear_width (double r)
+{
+    return 2;
+}
+
+/* Cubic functions described in the Mitchell-Netravali paper.
+   http://mentallandscape.com/Papers_siggraph88.pdf. This describes
+   all possible cubic functions that can be used for sampling.
+*/
+
+static double
+general_cubic (double x, double r, double B, double C)
+{
+    double ax;
+    if (r < 1.0)
+	return
+	    general_cubic(x * 2 - .5, r * 2, B, C) +
+	    general_cubic(x * 2 + .5, r * 2, B, C);
+
+    ax = fabs (x / r);
+
+    if (ax < 1)
+    {
+	return (((12 - 9 * B - 6 * C) * ax +
+		 (-18 + 12 * B + 6 * C)) * ax * ax +
+		(6 - 2 * B)) / 6;
+    }
+    else if (ax < 2)
+    {
+	return ((((-B - 6 * C) * ax +
+		 (6 * B + 30 * C)) * ax +
+		(-12 * B - 48 * C)) * ax +
+		(8 * B + 24 * C)) / 6;
+    }
+    else
+    {
+	return 0.0;
+    }
+}
+
+static int
+cubic_width (double r)
+{
+    return MAX (2, ceil (r * 4));
+}
+
+/* PIXMAN_KERNEL_CATMULL_ROM: Catmull-Rom interpolation. Often called
+   "cubic interpolation", "b-spline", or just "cubic" by other
+   software. This filter has negative values so it can produce ringing
+   and output pixels outside the range of input pixels. This is very
+   close to lanczos2 so there is no reason to supply that as well.
+*/
+
+static double
+cubic_kernel (double x, double r)
+{
+    return general_cubic (x, r, 0.0, 0.5);
+}
+
+/* PIXMAN_KERNEL_MITCHELL: Cubic recommended by the Mitchell-Netravali
+   paper.  This has negative values and because the values at +/-1 are
+   not zero it does not interpolate the pixels, meaning it will change
+   an image even if there is no translation.
+*/
+
+static double
+mitchell_kernel (double x, double r)
+{
+    return general_cubic (x, r, 1/3.0, 1/3.0);
+}
+
+/* PIXMAN_KERNEL_NOTCH: Cubic recommended by the Mitchell-Netravali
+   paper to remove postaliasing artifacts. This does not remove
+   aliasing already present in the source image, though it may appear
+   to due to it's excessive blurriness. In any case this is more
+   useful than gaussian for image reconstruction.
+*/
+
+static double
+notch_kernel (double x, double r)
+{
+    return general_cubic (x, r, 1.5, -0.25);
+}
+
+/* PIXMAN_KERNEL_LANCZOS3: lanczos windowed sinc function from -3 to
+   +3. Very popular with high-end software though I think any
+   advantage over cubics is hidden by quantization and programming
+   mistakes. You will see LANCZOS5 or even 7 sometimes.
+*/
+
+static double
+sinc (double x)
+{
+    return x ? sin (M_PI * x) / (M_PI * x) : 1.0;
+}
+
+static double
+lanczos (double x, double n)
+{
+    return fabs (x) < n ? sinc (x) * sinc (x * (1.0 / n)) : 0.0;
+}
+
+static double
+lanczos3_kernel (double x, double r)
+{
+    if (r < 1.0)
+	return
+	    lanczos3_kernel (x * 2 - .5, r * 2) +
+	    lanczos3_kernel (x * 2 + .5, r * 2);
+    else
+	return lanczos (x / r, 3.0);
+}
+
+static int
+lanczos3_width (double r)
+{
+    return MAX (2, ceil (r * 6));
+}
+
+/* PIXMAN_KERNEL_LANCZOS3_STRETCHED - The LANCZOS3 kernel widened by
+   4/3.  Recommended by Jim Blinn
+   http://graphics.cs.cmu.edu/nsp/course/15-462/Fall07/462/papers/jaggy.pdf
+*/
+
+static double
+nice_kernel (double x, double r)
+{
+    return lanczos3_kernel (x, r * (4.0/3));
+}
+
+static int
+nice_width (double r)
+{
+    return MAX (2.0, ceil (r * 8));
+}
+
+/* PIXMAN_KERNEL_TENT: Triangle of width 2r. Lots of software uses
+   this as a "better" filter, twice the size of a box but smaller than
+   a cubic.
+
+   When r == 1.0, PIXMAN_KERNEL_BOX, PIXMAN_KERNEL_LINEAR, and
+   PIXMAN_KERNEL_TENT all produce the same filter, allowing
+   them to be exchanged at this point.
+*/
+
+static double
+tent_kernel (double x, double r)
+{
+    if (r < 1.0)
+	return box_kernel(x, r);
+    else
+	return MAX (1.0 - fabs(x / r), 0.0);
+}
+
+static int
+tent_width (double r)
+{
+    return r < 1.0 ? 2 : ceil(2 * r);
+}
+
+
+static const filter_info_t filters[] =
+{
+    { KERNEL_IMPULSE,		impulse_kernel,   impulse_width },
+    { KERNEL_BOX,		box_kernel,       box_width },
+    { KERNEL_LINEAR,		linear_kernel,    linear_width },
+    { KERNEL_MITCHELL,		mitchell_kernel,  cubic_width },
+    { KERNEL_NOTCH,		notch_kernel,     cubic_width },
+    { KERNEL_CATMULL_ROM,	cubic_kernel,     cubic_width },
+    { KERNEL_LANCZOS3,		lanczos3_kernel,  lanczos3_width },
+    { KERNEL_LANCZOS3_STRETCHED,nice_kernel,      nice_width },
+    { KERNEL_TENT,		tent_kernel,	  tent_width }
+};
+
+/* Fills in one dimension of the filter array */
+static void get_filter(kernel_t filter, double r,
+		       int width, int subsample,
+		       pixman_fixed_t* out)
+{
+    int i;
+    pixman_fixed_t *p = out;
+    int n_phases = 1 << subsample;
+    double step = 1.0 / n_phases;
+    kernel_func_t func = filters[filter].func;
+
+    /* special-case the impulse filter: */
+    if (width <= 1)
+    {
+	for (i = 0; i < n_phases; ++i)
+	    *p++ = pixman_fixed_1;
+	return;
+    }
+
+    for (i = 0; i < n_phases; ++i)
+    {
+	double frac = (i + .5) * step;
+	/* Center of left-most pixel: */
+	double x1 = ceil (frac - width / 2.0 - 0.5) - frac + 0.5;
+	double total = 0;
+	pixman_fixed_t new_total = 0;
+	int j;
+
+	for (j = 0; j < width; ++j)
+	{
+	    double v = func(x1 + j, r);
+	    total += v;
+	    p[j] = pixman_double_to_fixed (v);
+	}
+
+	/* Normalize */
+        total = 1 / total;
+	for (j = 0; j < width; ++j)
+	    new_total += (p[j] *= total);
+
+	/* Put any error on center pixel */
+	p[width / 2] += (pixman_fixed_1 - new_total);
+
+	p += width;
+    }
+}
+
+
+/* Create the parameter list for a SEPARABLE_CONVOLUTION filter
+ * with the given kernels and scale parameters. 
+ */
+static pixman_fixed_t *
+create_separable_convolution (int *n_values,
+			      kernel_t xfilter,
+			      double sx,
+			      kernel_t yfilter,
+			      double sy)
+{
+    int xwidth, xsubsample, ywidth, ysubsample, size_x, size_y;
+    pixman_fixed_t *params;
+
+    xwidth = filters[xfilter].width(sx);
+    xsubsample = 0;
+    if (xwidth > 1)
+	while (sx * (1 << xsubsample) <= 128.0) xsubsample++;
+    size_x = (1 << xsubsample) * xwidth;
+
+    ywidth = filters[yfilter].width(sy);
+    ysubsample = 0;
+    if (ywidth > 1)
+	while (sy * (1 << ysubsample) <= 128.0) ysubsample++;
+    size_y = (1 << ysubsample) * ywidth;
+
+    *n_values = 4 + size_x + size_y;
+    params = _cairo_malloc (*n_values * sizeof (pixman_fixed_t));
+    if (!params) return 0;
+
+    params[0] = pixman_int_to_fixed (xwidth);
+    params[1] = pixman_int_to_fixed (ywidth);
+    params[2] = pixman_int_to_fixed (xsubsample);
+    params[3] = pixman_int_to_fixed (ysubsample);
+
+    get_filter(xfilter, sx, xwidth, xsubsample, params + 4);
+    get_filter(yfilter, sy, ywidth, ysubsample, params + 4 + size_x);
+
+    return params;
+}
+
+/* ========================================================================== */
+
+static cairo_bool_t
+_pixman_image_set_properties (pixman_image_t *pixman_image,
+			      const cairo_pattern_t *pattern,
+			      const cairo_rectangle_int_t *extents,
+			      int *ix,int *iy)
+{
+    pixman_transform_t pixman_transform;
+    cairo_int_status_t status;
+
+    status = _cairo_matrix_to_pixman_matrix_offset (&pattern->matrix,
+						    pattern->filter,
+						    extents->x + extents->width/2.,
+						    extents->y + extents->height/2.,
+						    &pixman_transform, ix, iy);
+    if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+    {
+	/* If the transform is an identity, we don't need to set it
+	 * and we can use any filtering, so choose the fastest one. */
+	pixman_image_set_filter (pixman_image, PIXMAN_FILTER_NEAREST, NULL, 0);
+    }
+    else if (unlikely (status != CAIRO_INT_STATUS_SUCCESS ||
+		       ! pixman_image_set_transform (pixman_image,
+						     &pixman_transform)))
+    {
+	return FALSE;
+    }
+    else
+    {
+	pixman_filter_t pixman_filter;
+	kernel_t kernel;
+	double dx, dy;
+
+	/* Compute scale factors from the pattern matrix. These scale
+	 * factors are from user to pattern space, and as such they
+	 * are greater than 1.0 for downscaling and less than 1.0 for
+	 * upscaling. The factors are the size of an axis-aligned
+	 * rectangle with the same area as the parallelgram a 1x1
+	 * square transforms to.
+	 */
+	dx = hypot (pattern->matrix.xx, pattern->matrix.xy);
+	dy = hypot (pattern->matrix.yx, pattern->matrix.yy);
+
+	/* Clip at maximum pixman_fixed number. Besides making it
+	 * passable to pixman, this avoids errors from inf and nan.
+	 */
+	if (! (dx < 0x7FFF)) dx = 0x7FFF;
+	if (! (dy < 0x7FFF)) dy = 0x7FFF;
+
+	switch (pattern->filter) {
+	case CAIRO_FILTER_FAST:
+	    pixman_filter = PIXMAN_FILTER_FAST;
+	    break;
+	case CAIRO_FILTER_GOOD:
+	    pixman_filter = PIXMAN_FILTER_SEPARABLE_CONVOLUTION;
+	    kernel = KERNEL_BOX;
+	    /* Clip the filter size to prevent extreme slowness. This
+	       value could be raised if 2-pass filtering is done */
+	    if (dx > 16.0) dx = 16.0;
+	    if (dy > 16.0) dy = 16.0;
+	    /* Match the bilinear filter for scales > .75: */
+	    if (dx < 1.0/0.75) dx = 1.0;
+	    if (dy < 1.0/0.75) dy = 1.0;
+	    break;
+	case CAIRO_FILTER_BEST:
+	    pixman_filter = PIXMAN_FILTER_SEPARABLE_CONVOLUTION;
+	    kernel = KERNEL_CATMULL_ROM; /* LANCZOS3 is better but not much */
+	    /* Clip the filter size to prevent extreme slowness. This
+	       value could be raised if 2-pass filtering is done */
+	    if (dx > 16.0) { dx = 16.0; kernel = KERNEL_BOX; }
+	    /* blur up to 2x scale, then blend to square pixels for larger: */
+	    else if (dx < 1.0) {
+		if (dx < 1.0/128) dx = 1.0/127;
+		else if (dx < 0.5) dx = 1.0 / (1.0 / dx - 1.0);
+		else dx = 1.0;
+	    }
+	    if (dy > 16.0) { dy = 16.0; kernel = KERNEL_BOX; }
+	    else if (dy < 1.0) {
+		if (dy < 1.0/128) dy = 1.0/127;
+		else if (dy < 0.5) dy = 1.0 / (1.0 / dy - 1.0);
+		else dy = 1.0;
+	    }
+	    break;
+	case CAIRO_FILTER_NEAREST:
+	    pixman_filter = PIXMAN_FILTER_NEAREST;
+	    break;
+	case CAIRO_FILTER_BILINEAR:
+	    pixman_filter = PIXMAN_FILTER_BILINEAR;
+	    break;
+	case CAIRO_FILTER_GAUSSIAN:
+	    /* XXX: The GAUSSIAN value has no implementation in cairo
+	     * whatsoever, so it was really a mistake to have it in the
+	     * API. We could fix this by officially deprecating it, or
+	     * else inventing semantics and providing an actual
+	     * implementation for it. */
+	default:
+	    pixman_filter = PIXMAN_FILTER_BEST;
+	}
+
+	if (pixman_filter == PIXMAN_FILTER_SEPARABLE_CONVOLUTION) {
+	    int n_params;
+	    pixman_fixed_t *params;
+	    params = create_separable_convolution
+		(&n_params, kernel, dx, kernel, dy);
+	    pixman_image_set_filter (pixman_image, pixman_filter,
+				     params, n_params);
+	    free (params);
+	} else {
+	    pixman_image_set_filter (pixman_image, pixman_filter, NULL, 0);
+	}
+    }
+
+    {
+	pixman_repeat_t pixman_repeat;
+
+	switch (pattern->extend) {
+	default:
+	case CAIRO_EXTEND_NONE:
+	    pixman_repeat = PIXMAN_REPEAT_NONE;
+	    break;
+	case CAIRO_EXTEND_REPEAT:
+	    pixman_repeat = PIXMAN_REPEAT_NORMAL;
+	    break;
+	case CAIRO_EXTEND_REFLECT:
+	    pixman_repeat = PIXMAN_REPEAT_REFLECT;
+	    break;
+	case CAIRO_EXTEND_PAD:
+	    pixman_repeat = PIXMAN_REPEAT_PAD;
+	    break;
+	}
+
+	pixman_image_set_repeat (pixman_image, pixman_repeat);
+    }
+
+    if (pattern->has_component_alpha)
+	pixman_image_set_component_alpha (pixman_image, TRUE);
+
+    return TRUE;
+}
+
+struct proxy {
+    cairo_surface_t base;
+    cairo_surface_t *image;
+};
+
+static cairo_status_t
+proxy_acquire_source_image (void			 *abstract_surface,
+			    cairo_image_surface_t	**image_out,
+			    void			**image_extra)
+{
+    struct proxy *proxy = abstract_surface;
+    return _cairo_surface_acquire_source_image (proxy->image, image_out, image_extra);
+}
+
+static void
+proxy_release_source_image (void			*abstract_surface,
+			    cairo_image_surface_t	*image,
+			    void			*image_extra)
+{
+    struct proxy *proxy = abstract_surface;
+    _cairo_surface_release_source_image (proxy->image, image, image_extra);
+}
+
+static cairo_status_t
+proxy_finish (void *abstract_surface)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t proxy_backend  = {
+    CAIRO_INTERNAL_SURFACE_TYPE_NULL,
+    proxy_finish,
+    NULL,
+
+    NULL, /* create similar */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    proxy_acquire_source_image,
+    proxy_release_source_image,
+};
+
+static cairo_surface_t *
+attach_proxy (cairo_surface_t *source,
+	      cairo_surface_t *image)
+{
+    struct proxy *proxy;
+
+    proxy = _cairo_malloc (sizeof (*proxy));
+    if (unlikely (proxy == NULL))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_surface_init (&proxy->base, &proxy_backend, NULL, image->content, FALSE);
+
+    proxy->image = image;
+    _cairo_surface_attach_snapshot (source, &proxy->base, NULL);
+
+    return &proxy->base;
+}
+
+static void
+detach_proxy (cairo_surface_t *source,
+	      cairo_surface_t *proxy)
+{
+    cairo_surface_finish (proxy);
+    cairo_surface_destroy (proxy);
+}
+
+static cairo_surface_t *
+get_proxy (cairo_surface_t *proxy)
+{
+    return ((struct proxy *)proxy)->image;
+}
+
+static pixman_image_t *
+_pixman_image_for_recording (cairo_image_surface_t *dst,
+			     const cairo_surface_pattern_t *pattern,
+			     cairo_bool_t is_mask,
+			     const cairo_rectangle_int_t *extents,
+			     const cairo_rectangle_int_t *sample,
+			     int *ix, int *iy)
+{
+    cairo_surface_t *source, *clone, *proxy;
+    cairo_rectangle_int_t limit;
+    cairo_rectangle_int_t src_limit;
+    pixman_image_t *pixman_image;
+    cairo_status_t status;
+    cairo_extend_t extend;
+    cairo_matrix_t *m, matrix;
+    double sx = 1.0, sy = 1.0;
+    int tx = 0, ty = 0;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    *ix = *iy = 0;
+
+    source = _cairo_pattern_get_source (pattern, &limit);
+    src_limit = limit;
+
+    extend = pattern->base.extend;
+    if (_cairo_rectangle_contains_rectangle (&limit, sample))
+	extend = CAIRO_EXTEND_NONE;
+
+    if (extend == CAIRO_EXTEND_NONE) {
+	if (! _cairo_rectangle_intersect (&limit, sample))
+	    return _pixman_transparent_image ();
+    }
+
+    if (! _cairo_matrix_is_identity (&pattern->base.matrix)) {
+	double x1, y1, x2, y2;
+
+	matrix = pattern->base.matrix;
+	status = cairo_matrix_invert (&matrix);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	x1 = limit.x;
+	y1 = limit.y;
+	x2 = limit.x + limit.width;
+	y2 = limit.y + limit.height;
+
+	_cairo_matrix_transform_bounding_box (&matrix,
+					      &x1, &y1, &x2, &y2, NULL);
+
+	limit.x = floor (x1);
+	limit.y = floor (y1);
+	limit.width  = ceil (x2) - limit.x;
+	limit.height = ceil (y2) - limit.y;
+	sx = (double)src_limit.width / limit.width;
+	sy = (double)src_limit.height / limit.height;
+    }
+    tx = limit.x;
+    ty = limit.y;
+
+    /* XXX transformations! */
+    proxy = _cairo_surface_has_snapshot (source, &proxy_backend);
+    if (proxy != NULL) {
+	clone = cairo_surface_reference (get_proxy (proxy));
+	goto done;
+    }
+
+    if (is_mask) {
+	    clone = cairo_image_surface_create (CAIRO_FORMAT_A8,
+						limit.width, limit.height);
+    } else {
+	if (dst->base.content == source->content)
+	    clone = cairo_image_surface_create (dst->format,
+						limit.width, limit.height);
+	else
+	    clone = _cairo_image_surface_create_with_content (source->content,
+							      limit.width,
+							      limit.height);
+    }
+
+    m = NULL;
+    if (extend == CAIRO_EXTEND_NONE) {
+	matrix = pattern->base.matrix;
+	if (tx | ty)
+	    cairo_matrix_translate (&matrix, tx, ty);
+	m = &matrix;
+    } else {
+	cairo_matrix_init_scale (&matrix, sx, sy);
+	cairo_matrix_translate (&matrix, src_limit.x/sx, src_limit.y/sy);
+	m = &matrix;
+    }
+
+    /* Handle recursion by returning future reads from the current image */
+    proxy = attach_proxy (source, clone);
+    status = _cairo_recording_surface_replay_with_clip (source, m, clone, NULL);
+    detach_proxy (source, proxy);
+    if (unlikely (status)) {
+	cairo_surface_destroy (clone);
+	return NULL;
+    }
+
+done:
+    pixman_image = pixman_image_ref (((cairo_image_surface_t *)clone)->pixman_image);
+    cairo_surface_destroy (clone);
+
+    if (extend == CAIRO_EXTEND_NONE) {
+	*ix = -limit.x;
+	*iy = -limit.y;
+    } else {
+	cairo_pattern_union_t tmp_pattern;
+	_cairo_pattern_init_static_copy (&tmp_pattern.base, &pattern->base);
+	matrix = pattern->base.matrix;
+	status = cairo_matrix_invert(&matrix);
+	assert (status == CAIRO_STATUS_SUCCESS);
+	cairo_matrix_translate (&matrix, src_limit.x, src_limit.y);
+	cairo_matrix_scale (&matrix, sx, sy);
+	status = cairo_matrix_invert(&matrix);
+	assert (status == CAIRO_STATUS_SUCCESS);
+	cairo_pattern_set_matrix (&tmp_pattern.base, &matrix);
+	if (! _pixman_image_set_properties (pixman_image,
+					    &tmp_pattern.base, extents,
+					    ix, iy)) {
+	    pixman_image_unref (pixman_image);
+	    pixman_image= NULL;
+	}
+    }
+
+    return pixman_image;
+}
+
+static pixman_image_t *
+_pixman_image_for_surface (cairo_image_surface_t *dst,
+			   const cairo_surface_pattern_t *pattern,
+			   cairo_bool_t is_mask,
+			   const cairo_rectangle_int_t *extents,
+			   const cairo_rectangle_int_t *sample,
+			   int *ix, int *iy)
+{
+    cairo_extend_t extend = pattern->base.extend;
+    pixman_image_t *pixman_image;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    *ix = *iy = 0;
+    pixman_image = NULL;
+    if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+	return _pixman_image_for_recording(dst, pattern,
+					   is_mask, extents, sample,
+					   ix, iy);
+
+    if (pattern->surface->type == CAIRO_SURFACE_TYPE_IMAGE &&
+	(! is_mask || ! pattern->base.has_component_alpha ||
+	 (pattern->surface->content & CAIRO_CONTENT_COLOR) == 0))
+    {
+	cairo_surface_t *defer_free = NULL;
+	cairo_image_surface_t *source = (cairo_image_surface_t *) pattern->surface;
+	cairo_surface_type_t type;
+
+	if (_cairo_surface_is_snapshot (&source->base)) {
+	    defer_free = _cairo_surface_snapshot_get_target (&source->base);
+	    source = (cairo_image_surface_t *) defer_free;
+	}
+
+	type = source->base.backend->type;
+	if (type == CAIRO_SURFACE_TYPE_IMAGE) {
+	    if (extend != CAIRO_EXTEND_NONE &&
+		sample->x >= 0 &&
+		sample->y >= 0 &&
+		sample->x + sample->width  <= source->width &&
+		sample->y + sample->height <= source->height)
+	    {
+		extend = CAIRO_EXTEND_NONE;
+	    }
+
+	    if (sample->width == 1 && sample->height == 1) {
+		if (sample->x < 0 ||
+		    sample->y < 0 ||
+		    sample->x >= source->width ||
+		    sample->y >= source->height)
+		{
+		    if (extend == CAIRO_EXTEND_NONE) {
+			cairo_surface_destroy (defer_free);
+			return _pixman_transparent_image ();
+		    }
+		}
+		else
+		{
+		    pixman_image = _pixel_to_solid (source,
+						    sample->x, sample->y);
+                    if (pixman_image) {
+			cairo_surface_destroy (defer_free);
+                        return pixman_image;
+		    }
+		}
+	    }
+
+#if PIXMAN_HAS_ATOMIC_OPS
+	    /* avoid allocating a 'pattern' image if we can reuse the original */
+	    if (extend == CAIRO_EXTEND_NONE &&
+		_cairo_matrix_is_pixman_translation (&pattern->base.matrix,
+						     pattern->base.filter,
+						     ix, iy))
+	    {
+		cairo_surface_destroy (defer_free);
+		return pixman_image_ref (source->pixman_image);
+	    }
+#endif
+
+	    pixman_image = pixman_image_create_bits (source->pixman_format,
+						     source->width,
+						     source->height,
+						     (uint32_t *) source->data,
+						     source->stride);
+	    if (unlikely (pixman_image == NULL)) {
+		cairo_surface_destroy (defer_free);
+		return NULL;
+	    }
+
+	    if (defer_free) {
+		pixman_image_set_destroy_function (pixman_image,
+						   _defer_free_cleanup,
+						   defer_free);
+	    }
+	} else if (type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    cairo_surface_subsurface_t *sub;
+	    cairo_bool_t is_contained = FALSE;
+
+	    sub = (cairo_surface_subsurface_t *) source;
+	    source = (cairo_image_surface_t *) sub->target;
+
+	    if (sample->x >= 0 &&
+		sample->y >= 0 &&
+		sample->x + sample->width  <= sub->extents.width &&
+		sample->y + sample->height <= sub->extents.height)
+	    {
+		is_contained = TRUE;
+	    }
+
+	    if (sample->width == 1 && sample->height == 1) {
+		if (is_contained) {
+		    pixman_image = _pixel_to_solid (source,
+                                                    sub->extents.x + sample->x,
+                                                    sub->extents.y + sample->y);
+                    if (pixman_image)
+                        return pixman_image;
+		} else {
+		    if (extend == CAIRO_EXTEND_NONE)
+			return _pixman_transparent_image ();
+		}
+	    }
+
+#if PIXMAN_HAS_ATOMIC_OPS
+	    *ix = sub->extents.x;
+	    *iy = sub->extents.y;
+	    if (is_contained &&
+		_cairo_matrix_is_pixman_translation (&pattern->base.matrix,
+						     pattern->base.filter,
+						     ix, iy))
+	    {
+		return pixman_image_ref (source->pixman_image);
+	    }
+#endif
+
+	    /* Avoid sub-byte offsets, force a copy in that case. */
+	    if (PIXMAN_FORMAT_BPP (source->pixman_format) >= 8) {
+		if (is_contained) {
+		    void *data = source->data
+			+ sub->extents.x * PIXMAN_FORMAT_BPP(source->pixman_format)/8
+			+ sub->extents.y * source->stride;
+		    pixman_image = pixman_image_create_bits (source->pixman_format,
+							     sub->extents.width,
+							     sub->extents.height,
+							     data,
+							     source->stride);
+		    if (unlikely (pixman_image == NULL))
+			return NULL;
+		} else {
+		    /* XXX for a simple translation and EXTEND_NONE we can
+		     * fix up the pattern matrix instead.
+		     */
+		}
+	    }
+	}
+    }
+
+    if (pixman_image == NULL) {
+	struct acquire_source_cleanup *cleanup;
+	cairo_image_surface_t *image;
+	void *extra;
+	cairo_status_t status;
+
+	status = _cairo_surface_acquire_source_image (pattern->surface, &image, &extra);
+	if (unlikely (status))
+	    return NULL;
+
+	pixman_image = pixman_image_create_bits (image->pixman_format,
+						 image->width,
+						 image->height,
+						 (uint32_t *) image->data,
+						 image->stride);
+	if (unlikely (pixman_image == NULL)) {
+	    _cairo_surface_release_source_image (pattern->surface, image, extra);
+	    return NULL;
+	}
+
+	cleanup = _cairo_malloc (sizeof (*cleanup));
+	if (unlikely (cleanup == NULL)) {
+	    _cairo_surface_release_source_image (pattern->surface, image, extra);
+	    pixman_image_unref (pixman_image);
+	    return NULL;
+	}
+
+	cleanup->surface = pattern->surface;
+	cleanup->image = image;
+	cleanup->image_extra = extra;
+	pixman_image_set_destroy_function (pixman_image,
+					   _acquire_source_cleanup, cleanup);
+    }
+
+    if (! _pixman_image_set_properties (pixman_image,
+					&pattern->base, extents,
+					ix, iy)) {
+	pixman_image_unref (pixman_image);
+	pixman_image= NULL;
+    }
+
+    return pixman_image;
+}
+
+struct raster_source_cleanup {
+    const cairo_pattern_t *pattern;
+    cairo_surface_t *surface;
+    cairo_image_surface_t *image;
+    void *image_extra;
+};
+
+static void
+_raster_source_cleanup (pixman_image_t *pixman_image,
+			void *closure)
+{
+    struct raster_source_cleanup *data = closure;
+
+    _cairo_surface_release_source_image (data->surface,
+					 data->image,
+					 data->image_extra);
+
+    _cairo_raster_source_pattern_release (data->pattern,
+					  data->surface);
+
+    free (data);
+}
+
+static pixman_image_t *
+_pixman_image_for_raster (cairo_image_surface_t *dst,
+			  const cairo_raster_source_pattern_t *pattern,
+			  cairo_bool_t is_mask,
+			  const cairo_rectangle_int_t *extents,
+			  const cairo_rectangle_int_t *sample,
+			  int *ix, int *iy)
+{
+    pixman_image_t *pixman_image;
+    struct raster_source_cleanup *cleanup;
+    cairo_image_surface_t *image;
+    void *extra;
+    cairo_status_t status;
+    cairo_surface_t *surface;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    *ix = *iy = 0;
+
+    surface = _cairo_raster_source_pattern_acquire (&pattern->base,
+						    &dst->base, NULL);
+    if (unlikely (surface == NULL || surface->status))
+	return NULL;
+
+    status = _cairo_surface_acquire_source_image (surface, &image, &extra);
+    if (unlikely (status)) {
+	_cairo_raster_source_pattern_release (&pattern->base, surface);
+	return NULL;
+    }
+
+    assert (image->width == pattern->extents.width);
+    assert (image->height == pattern->extents.height);
+
+    pixman_image = pixman_image_create_bits (image->pixman_format,
+					     image->width,
+					     image->height,
+					     (uint32_t *) image->data,
+					     image->stride);
+    if (unlikely (pixman_image == NULL)) {
+	_cairo_surface_release_source_image (surface, image, extra);
+	_cairo_raster_source_pattern_release (&pattern->base, surface);
+	return NULL;
+    }
+
+    cleanup = _cairo_malloc (sizeof (*cleanup));
+    if (unlikely (cleanup == NULL)) {
+	pixman_image_unref (pixman_image);
+	_cairo_surface_release_source_image (surface, image, extra);
+	_cairo_raster_source_pattern_release (&pattern->base, surface);
+	return NULL;
+    }
+
+    cleanup->pattern = &pattern->base;
+    cleanup->surface = surface;
+    cleanup->image = image;
+    cleanup->image_extra = extra;
+    pixman_image_set_destroy_function (pixman_image,
+				       _raster_source_cleanup, cleanup);
+
+    if (! _pixman_image_set_properties (pixman_image,
+					&pattern->base, extents,
+					ix, iy)) {
+	pixman_image_unref (pixman_image);
+	pixman_image= NULL;
+    }
+
+    return pixman_image;
+}
+
+pixman_image_t *
+_pixman_image_for_pattern (cairo_image_surface_t *dst,
+			   const cairo_pattern_t *pattern,
+			   cairo_bool_t is_mask,
+			   const cairo_rectangle_int_t *extents,
+			   const cairo_rectangle_int_t *sample,
+			   int *tx, int *ty)
+{
+    *tx = *ty = 0;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (pattern == NULL)
+	return _pixman_white_image ();
+
+    switch (pattern->type) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _pixman_image_for_color (&((const cairo_solid_pattern_t *) pattern)->color);
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return _pixman_image_for_gradient ((const cairo_gradient_pattern_t *) pattern,
+					   extents, tx, ty);
+
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _pixman_image_for_mesh ((const cairo_mesh_pattern_t *) pattern,
+					   extents, tx, ty);
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _pixman_image_for_surface (dst,
+					  (const cairo_surface_pattern_t *) pattern,
+					  is_mask, extents, sample,
+					  tx, ty);
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _pixman_image_for_raster (dst,
+					 (const cairo_raster_source_pattern_t *) pattern,
+					 is_mask, extents, sample,
+					 tx, ty);
+    }
+}
+
+static cairo_status_t
+_cairo_image_source_finish (void *abstract_surface)
+{
+    cairo_image_source_t *source = abstract_surface;
+
+    pixman_image_unref (source->pixman_image);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+const cairo_surface_backend_t _cairo_image_source_backend = {
+    CAIRO_SURFACE_TYPE_IMAGE,
+    _cairo_image_source_finish,
+    NULL, /* read-only wrapper */
+};
+
+cairo_surface_t *
+_cairo_image_source_create_for_pattern (cairo_surface_t *dst,
+					 const cairo_pattern_t *pattern,
+					 cairo_bool_t is_mask,
+					 const cairo_rectangle_int_t *extents,
+					 const cairo_rectangle_int_t *sample,
+					 int *src_x, int *src_y)
+{
+    cairo_image_source_t *source;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    source = _cairo_malloc (sizeof (cairo_image_source_t));
+    if (unlikely (source == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    source->pixman_image =
+	_pixman_image_for_pattern ((cairo_image_surface_t *)dst,
+				   pattern, is_mask,
+				   extents, sample,
+				   src_x, src_y);
+    if (unlikely (source->pixman_image == NULL)) {
+	free (source);
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_surface_init (&source->base,
+			 &_cairo_image_source_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 FALSE); /* is_vector */
+
+    source->is_opaque_solid =
+	pattern == NULL || _cairo_pattern_is_opaque_solid (pattern);
+
+    return &source->base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-image-surface-inline.h b/libs/cairo-1.16.0/src/cairo-image-surface-inline.h
new file mode 100644
index 0000000..743d5fd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-surface-inline.h
@@ -0,0 +1,96 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_IMAGE_SURFACE_INLINE_H
+#define CAIRO_IMAGE_SURFACE_INLINE_H
+
+#include "cairo-surface-private.h"
+#include "cairo-image-surface-private.h"
+
+CAIRO_BEGIN_DECLS
+
+static inline cairo_image_surface_t *
+_cairo_image_surface_create_in_error (cairo_status_t status)
+{
+    return (cairo_image_surface_t *) _cairo_surface_create_in_error (status);
+}
+
+static inline void
+_cairo_image_surface_set_parent (cairo_image_surface_t *image,
+				 cairo_surface_t *parent)
+{
+    image->parent = parent;
+}
+
+static inline cairo_bool_t
+_cairo_image_surface_is_clone (cairo_image_surface_t *image)
+{
+    return image->parent != NULL;
+}
+
+/**
+ * _cairo_surface_is_image:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is an #cairo_image_surface_t
+ *
+ * Return value: %TRUE if the surface is an image surface
+ **/
+static inline cairo_bool_t
+_cairo_surface_is_image (const cairo_surface_t *surface)
+{
+    /* _cairo_surface_nil sets a NULL backend so be safe */
+    return surface->backend && surface->backend->type == CAIRO_SURFACE_TYPE_IMAGE;
+}
+
+/**
+ * _cairo_surface_is_image_source:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is an #cairo_image_source_t
+ *
+ * Return value: %TRUE if the surface is an image source
+ **/
+static inline cairo_bool_t
+_cairo_surface_is_image_source (const cairo_surface_t *surface)
+{
+    return surface->backend == &_cairo_image_source_backend;
+}
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_IMAGE_SURFACE_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-image-surface-private.h b/libs/cairo-1.16.0/src/cairo-image-surface-private.h
new file mode 100644
index 0000000..2b79211
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-surface-private.h
@@ -0,0 +1,239 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_IMAGE_SURFACE_PRIVATE_H
+#define CAIRO_IMAGE_SURFACE_PRIVATE_H
+
+#include "cairo-surface-private.h"
+
+#include <stddef.h>
+#include <pixman.h>
+
+CAIRO_BEGIN_DECLS
+
+/* The canonical image backend */
+struct _cairo_image_surface {
+    cairo_surface_t base;
+
+    pixman_image_t *pixman_image;
+    const cairo_compositor_t *compositor;
+
+    /* Parenting is tricky wrt lifetime tracking...
+     *
+     * One use for tracking the parent of an image surface is for
+     * create_similar_image() where we wish to create a device specific
+     * surface but return an image surface to the user. In such a case,
+     * the image may be owned by the device specific surface, its parent,
+     * but the user lifetime tracking is then performed on the image. So
+     * when the image is then finalized we call cairo_surface_destroy()
+     * on the parent. However, for normal usage where the lifetime tracking
+     * is done on the parent surface, we need to be careful to unhook
+     * the image->parent pointer before finalizing the image.
+     */
+    cairo_surface_t *parent;
+
+    pixman_format_code_t pixman_format;
+    cairo_format_t format;
+    unsigned char *data;
+
+    int width;
+    int height;
+    ptrdiff_t stride;
+    int depth;
+
+    unsigned owns_data : 1;
+    unsigned transparency : 2;
+    unsigned color : 2;
+};
+#define to_image_surface(S) ((cairo_image_surface_t *)(S))
+
+/* A wrapper for holding pixman images returned by create_for_pattern */
+typedef struct _cairo_image_source {
+    cairo_surface_t base;
+
+    pixman_image_t *pixman_image;
+    unsigned is_opaque_solid : 1;
+} cairo_image_source_t;
+
+cairo_private extern const cairo_surface_backend_t _cairo_image_surface_backend;
+cairo_private extern const cairo_surface_backend_t _cairo_image_source_backend;
+
+cairo_private const cairo_compositor_t *
+_cairo_image_mask_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_image_traps_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_image_spans_compositor_get (void);
+
+#define _cairo_image_default_compositor_get _cairo_image_spans_compositor_get
+
+cairo_private cairo_int_status_t
+_cairo_image_surface_paint (void			*abstract_surface,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_image_surface_mask (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_pattern_t	*mask,
+			   const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_image_surface_stroke (void			*abstract_surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     const cairo_path_fixed_t	*path,
+			     const cairo_stroke_style_t	*style,
+			     const cairo_matrix_t	*ctm,
+			     const cairo_matrix_t	*ctm_inverse,
+			     double			 tolerance,
+			     cairo_antialias_t		 antialias,
+			     const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_image_surface_fill (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		 fill_rule,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_image_surface_glyphs (void			*abstract_surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     cairo_glyph_t		*glyphs,
+			     int			 num_glyphs,
+			     cairo_scaled_font_t	*scaled_font,
+			     const cairo_clip_t		*clip);
+
+cairo_private void
+_cairo_image_surface_init (cairo_image_surface_t *surface,
+			   pixman_image_t	*pixman_image,
+			   pixman_format_code_t	 pixman_format);
+
+cairo_private cairo_surface_t *
+_cairo_image_surface_create_similar (void	       *abstract_other,
+				     cairo_content_t	content,
+				     int		width,
+				     int		height);
+
+cairo_private cairo_image_surface_t *
+_cairo_image_surface_map_to_image (void *abstract_other,
+				   const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_int_status_t
+_cairo_image_surface_unmap_image (void *abstract_surface,
+				  cairo_image_surface_t *image);
+
+cairo_private cairo_surface_t *
+_cairo_image_surface_source (void			*abstract_surface,
+			     cairo_rectangle_int_t	*extents);
+
+cairo_private cairo_status_t
+_cairo_image_surface_acquire_source_image (void                    *abstract_surface,
+					   cairo_image_surface_t  **image_out,
+					   void                   **image_extra);
+
+cairo_private void
+_cairo_image_surface_release_source_image (void                   *abstract_surface,
+					   cairo_image_surface_t  *image,
+					   void                   *image_extra);
+
+cairo_private cairo_surface_t *
+_cairo_image_surface_snapshot (void *abstract_surface);
+
+cairo_private_no_warn cairo_bool_t
+_cairo_image_surface_get_extents (void			  *abstract_surface,
+				  cairo_rectangle_int_t   *rectangle);
+
+cairo_private void
+_cairo_image_surface_get_font_options (void                  *abstract_surface,
+				       cairo_font_options_t  *options);
+
+cairo_private cairo_surface_t *
+_cairo_image_source_create_for_pattern (cairo_surface_t *dst,
+					const cairo_pattern_t *pattern,
+					cairo_bool_t is_mask,
+					const cairo_rectangle_int_t *extents,
+					const cairo_rectangle_int_t *sample,
+					int *src_x, int *src_y);
+
+cairo_private cairo_status_t
+_cairo_image_surface_finish (void *abstract_surface);
+
+cairo_private pixman_image_t *
+_pixman_image_for_color (const cairo_color_t *cairo_color);
+
+cairo_private pixman_image_t *
+_pixman_image_for_pattern (cairo_image_surface_t *dst,
+			   const cairo_pattern_t *pattern,
+			   cairo_bool_t is_mask,
+			   const cairo_rectangle_int_t *extents,
+			   const cairo_rectangle_int_t *sample,
+			   int *tx, int *ty);
+
+cairo_private void
+_pixman_image_add_traps (pixman_image_t *image,
+			 int dst_x, int dst_y,
+			 cairo_traps_t *traps);
+
+cairo_private void
+_pixman_image_add_tristrip (pixman_image_t *image,
+			    int dst_x, int dst_y,
+			    cairo_tristrip_t *strip);
+
+cairo_private cairo_image_surface_t *
+_cairo_image_surface_clone_subimage (cairo_surface_t             *surface,
+				     const cairo_rectangle_int_t *extents);
+
+/* Similar to clone; but allow format conversion */
+cairo_private cairo_image_surface_t *
+_cairo_image_surface_create_from_image (cairo_image_surface_t *other,
+					pixman_format_code_t format,
+					int x, int y, int width, int height,
+					int stride);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_IMAGE_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-image-surface.c b/libs/cairo-1.16.0/src/cairo-image-surface.c
new file mode 100644
index 0000000..2ee1cad
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-image-surface.c
@@ -0,0 +1,1344 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ * Copyright © 2009,2010,2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-paginated-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-pixman-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-region-private.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-surface-subsurface-private.h"
+
+/* Limit on the width / height of an image surface in pixels.  This is
+ * mainly determined by coordinates of things sent to pixman at the
+ * moment being in 16.16 format. */
+#define MAX_IMAGE_SIZE 32767
+
+/**
+ * SECTION:cairo-image
+ * @Title: Image Surfaces
+ * @Short_Description: Rendering to memory buffers
+ * @See_Also: #cairo_surface_t
+ *
+ * Image surfaces provide the ability to render to memory buffers
+ * either allocated by cairo or by the calling code.  The supported
+ * image formats are those defined in #cairo_format_t.
+ **/
+
+/**
+ * CAIRO_HAS_IMAGE_SURFACE:
+ *
+ * Defined if the image surface backend is available.
+ * The image surface backend is always built in.
+ * This macro was added for completeness in cairo 1.8.
+ *
+ * Since: 1.8
+ **/
+
+static cairo_bool_t
+_cairo_image_surface_is_size_valid (int width, int height)
+{
+    return 0 <= width  &&  width <= MAX_IMAGE_SIZE &&
+	   0 <= height && height <= MAX_IMAGE_SIZE;
+}
+
+cairo_format_t
+_cairo_format_from_pixman_format (pixman_format_code_t pixman_format)
+{
+    switch (pixman_format) {
+    case PIXMAN_a8r8g8b8:
+	return CAIRO_FORMAT_ARGB32;
+    case PIXMAN_x2r10g10b10:
+	return CAIRO_FORMAT_RGB30;
+    case PIXMAN_x8r8g8b8:
+	return CAIRO_FORMAT_RGB24;
+    case PIXMAN_a8:
+	return CAIRO_FORMAT_A8;
+    case PIXMAN_a1:
+	return CAIRO_FORMAT_A1;
+    case PIXMAN_r5g6b5:
+	return CAIRO_FORMAT_RGB16_565;
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,22,0)
+    case PIXMAN_r8g8b8a8: case PIXMAN_r8g8b8x8:
+#endif
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,27,2)
+    case PIXMAN_a8r8g8b8_sRGB:
+#endif
+    case PIXMAN_a8b8g8r8: case PIXMAN_x8b8g8r8: case PIXMAN_r8g8b8:
+    case PIXMAN_b8g8r8:   case PIXMAN_b5g6r5:
+    case PIXMAN_a1r5g5b5: case PIXMAN_x1r5g5b5: case PIXMAN_a1b5g5r5:
+    case PIXMAN_x1b5g5r5: case PIXMAN_a4r4g4b4: case PIXMAN_x4r4g4b4:
+    case PIXMAN_a4b4g4r4: case PIXMAN_x4b4g4r4: case PIXMAN_r3g3b2:
+    case PIXMAN_b2g3r3:   case PIXMAN_a2r2g2b2: case PIXMAN_a2b2g2r2:
+    case PIXMAN_c8:       case PIXMAN_g8:       case PIXMAN_x4a4:
+    case PIXMAN_a4:       case PIXMAN_r1g2b1:   case PIXMAN_b1g2r1:
+    case PIXMAN_a1r1g1b1: case PIXMAN_a1b1g1r1: case PIXMAN_c4:
+    case PIXMAN_g4:       case PIXMAN_g1:
+    case PIXMAN_yuy2:     case PIXMAN_yv12:
+    case PIXMAN_b8g8r8x8:
+    case PIXMAN_b8g8r8a8:
+    case PIXMAN_a2b10g10r10:
+    case PIXMAN_x2b10g10r10:
+    case PIXMAN_a2r10g10b10:
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0,22,0)
+    case PIXMAN_x14r6g6b6:
+#endif
+    default:
+	return CAIRO_FORMAT_INVALID;
+    }
+
+    return CAIRO_FORMAT_INVALID;
+}
+
+cairo_content_t
+_cairo_content_from_pixman_format (pixman_format_code_t pixman_format)
+{
+    cairo_content_t content;
+
+    content = 0;
+    if (PIXMAN_FORMAT_RGB (pixman_format))
+	content |= CAIRO_CONTENT_COLOR;
+    if (PIXMAN_FORMAT_A (pixman_format))
+	content |= CAIRO_CONTENT_ALPHA;
+
+    return content;
+}
+
+void
+_cairo_image_surface_init (cairo_image_surface_t *surface,
+			   pixman_image_t	*pixman_image,
+			   pixman_format_code_t	 pixman_format)
+{
+    surface->parent = NULL;
+    surface->pixman_image = pixman_image;
+
+    surface->pixman_format = pixman_format;
+    surface->format = _cairo_format_from_pixman_format (pixman_format);
+    surface->data = (uint8_t *) pixman_image_get_data (pixman_image);
+    surface->owns_data = FALSE;
+    surface->transparency = CAIRO_IMAGE_UNKNOWN;
+    surface->color = CAIRO_IMAGE_UNKNOWN_COLOR;
+
+    surface->width = pixman_image_get_width (pixman_image);
+    surface->height = pixman_image_get_height (pixman_image);
+    surface->stride = pixman_image_get_stride (pixman_image);
+    surface->depth = pixman_image_get_depth (pixman_image);
+
+    surface->base.is_clear = surface->width == 0 || surface->height == 0;
+
+    surface->compositor = _cairo_image_spans_compositor_get ();
+}
+
+cairo_surface_t *
+_cairo_image_surface_create_for_pixman_image (pixman_image_t		*pixman_image,
+					      pixman_format_code_t	 pixman_format)
+{
+    cairo_image_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_image_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_image_surface_backend,
+			 NULL, /* device */
+			 _cairo_content_from_pixman_format (pixman_format),
+			 FALSE); /* is_vector */
+
+    _cairo_image_surface_init (surface, pixman_image, pixman_format);
+
+    return &surface->base;
+}
+
+cairo_bool_t
+_pixman_format_from_masks (cairo_format_masks_t *masks,
+			   pixman_format_code_t *format_ret)
+{
+    pixman_format_code_t format;
+    int format_type;
+    int a, r, g, b;
+    cairo_format_masks_t format_masks;
+
+    a = _cairo_popcount (masks->alpha_mask);
+    r = _cairo_popcount (masks->red_mask);
+    g = _cairo_popcount (masks->green_mask);
+    b = _cairo_popcount (masks->blue_mask);
+
+    if (masks->red_mask) {
+	if (masks->red_mask > masks->blue_mask)
+	    format_type = PIXMAN_TYPE_ARGB;
+	else
+	    format_type = PIXMAN_TYPE_ABGR;
+    } else if (masks->alpha_mask) {
+	format_type = PIXMAN_TYPE_A;
+    } else {
+	return FALSE;
+    }
+
+    format = PIXMAN_FORMAT (masks->bpp, format_type, a, r, g, b);
+
+    if (! pixman_format_supported_destination (format))
+	return FALSE;
+
+    /* Sanity check that we got out of PIXMAN_FORMAT exactly what we
+     * expected. This avoid any problems from something bizarre like
+     * alpha in the least-significant bits, or insane channel order,
+     * or whatever. */
+     if (!_pixman_format_to_masks (format, &format_masks) ||
+         masks->bpp        != format_masks.bpp            ||
+	 masks->red_mask   != format_masks.red_mask       ||
+	 masks->green_mask != format_masks.green_mask     ||
+	 masks->blue_mask  != format_masks.blue_mask)
+     {
+	 return FALSE;
+     }
+
+    *format_ret = format;
+    return TRUE;
+}
+
+/* A mask consisting of N bits set to 1. */
+#define MASK(N) ((1UL << (N))-1)
+
+cairo_bool_t
+_pixman_format_to_masks (pixman_format_code_t	 format,
+			 cairo_format_masks_t	*masks)
+{
+    int a, r, g, b;
+
+    masks->bpp = PIXMAN_FORMAT_BPP (format);
+
+    /* Number of bits in each channel */
+    a = PIXMAN_FORMAT_A (format);
+    r = PIXMAN_FORMAT_R (format);
+    g = PIXMAN_FORMAT_G (format);
+    b = PIXMAN_FORMAT_B (format);
+
+    switch (PIXMAN_FORMAT_TYPE (format)) {
+    case PIXMAN_TYPE_ARGB:
+        masks->alpha_mask = MASK (a) << (r + g + b);
+        masks->red_mask   = MASK (r) << (g + b);
+        masks->green_mask = MASK (g) << (b);
+        masks->blue_mask  = MASK (b);
+        return TRUE;
+    case PIXMAN_TYPE_ABGR:
+        masks->alpha_mask = MASK (a) << (b + g + r);
+        masks->blue_mask  = MASK (b) << (g + r);
+        masks->green_mask = MASK (g) << (r);
+        masks->red_mask   = MASK (r);
+        return TRUE;
+#ifdef PIXMAN_TYPE_BGRA
+    case PIXMAN_TYPE_BGRA:
+        masks->blue_mask  = MASK (b) << (masks->bpp - b);
+        masks->green_mask = MASK (g) << (masks->bpp - b - g);
+        masks->red_mask   = MASK (r) << (masks->bpp - b - g - r);
+        masks->alpha_mask = MASK (a);
+        return TRUE;
+#endif
+    case PIXMAN_TYPE_A:
+        masks->alpha_mask = MASK (a);
+        masks->red_mask   = 0;
+        masks->green_mask = 0;
+        masks->blue_mask  = 0;
+        return TRUE;
+    case PIXMAN_TYPE_OTHER:
+    case PIXMAN_TYPE_COLOR:
+    case PIXMAN_TYPE_GRAY:
+    case PIXMAN_TYPE_YUY2:
+    case PIXMAN_TYPE_YV12:
+    default:
+        masks->alpha_mask = 0;
+        masks->red_mask   = 0;
+        masks->green_mask = 0;
+        masks->blue_mask  = 0;
+        return FALSE;
+    }
+}
+
+pixman_format_code_t
+_cairo_format_to_pixman_format_code (cairo_format_t format)
+{
+    pixman_format_code_t ret;
+    switch (format) {
+    case CAIRO_FORMAT_A1:
+	ret = PIXMAN_a1;
+	break;
+    case CAIRO_FORMAT_A8:
+	ret = PIXMAN_a8;
+	break;
+    case CAIRO_FORMAT_RGB24:
+	ret = PIXMAN_x8r8g8b8;
+	break;
+    case CAIRO_FORMAT_RGB30:
+	ret = PIXMAN_x2r10g10b10;
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	ret = PIXMAN_r5g6b5;
+	break;
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ret = PIXMAN_a8r8g8b8;
+	break;
+    }
+    return ret;
+}
+
+cairo_surface_t *
+_cairo_image_surface_create_with_pixman_format (unsigned char		*data,
+						pixman_format_code_t	 pixman_format,
+						int			 width,
+						int			 height,
+						int			 stride)
+{
+    cairo_surface_t *surface;
+    pixman_image_t *pixman_image;
+
+    if (! _cairo_image_surface_is_size_valid (width, height))
+    {
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+    pixman_image = pixman_image_create_bits (pixman_format, width, height,
+					     (uint32_t *) data, stride);
+
+    if (unlikely (pixman_image == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface = _cairo_image_surface_create_for_pixman_image (pixman_image,
+							    pixman_format);
+    if (unlikely (surface->status)) {
+	pixman_image_unref (pixman_image);
+	return surface;
+    }
+
+    /* we can not make any assumptions about the initial state of user data */
+    surface->is_clear = data == NULL;
+    return surface;
+}
+
+/**
+ * cairo_image_surface_create:
+ * @format: format of pixels in the surface to create
+ * @width: width of the surface, in pixels
+ * @height: height of the surface, in pixels
+ *
+ * Creates an image surface of the specified format and
+ * dimensions. Initially the surface contents are set to 0.
+ * (Specifically, within each pixel, each color or alpha channel
+ * belonging to format will be 0. The contents of bits within a pixel,
+ * but not belonging to the given format are undefined).
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_image_surface_create (cairo_format_t	format,
+			    int			width,
+			    int			height)
+{
+    pixman_format_code_t pixman_format;
+
+    if (! CAIRO_FORMAT_VALID (format))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    pixman_format = _cairo_format_to_pixman_format_code (format);
+
+    return _cairo_image_surface_create_with_pixman_format (NULL, pixman_format,
+							   width, height, -1);
+}
+slim_hidden_def (cairo_image_surface_create);
+
+    cairo_surface_t *
+_cairo_image_surface_create_with_content (cairo_content_t	content,
+					  int			width,
+					  int			height)
+{
+    return cairo_image_surface_create (_cairo_format_from_content (content),
+				       width, height);
+}
+
+/**
+ * cairo_format_stride_for_width:
+ * @format: A #cairo_format_t value
+ * @width: The desired width of an image surface to be created.
+ *
+ * This function provides a stride value that will respect all
+ * alignment requirements of the accelerated image-rendering code
+ * within cairo. Typical usage will be of the form:
+ *
+ * <informalexample><programlisting>
+ * int stride;
+ * unsigned char *data;
+ * cairo_surface_t *surface;
+ *
+ * stride = cairo_format_stride_for_width (format, width);
+ * data = malloc (stride * height);
+ * surface = cairo_image_surface_create_for_data (data, format,
+ *						  width, height,
+ *						  stride);
+ * </programlisting></informalexample>
+ *
+ * Return value: the appropriate stride to use given the desired
+ * format and width, or -1 if either the format is invalid or the width
+ * too large.
+ *
+ * Since: 1.6
+ **/
+    int
+cairo_format_stride_for_width (cairo_format_t	format,
+			       int		width)
+{
+    int bpp;
+
+    if (! CAIRO_FORMAT_VALID (format)) {
+	_cairo_error_throw (CAIRO_STATUS_INVALID_FORMAT);
+	return -1;
+    }
+
+    bpp = _cairo_format_bits_per_pixel (format);
+    if ((unsigned) (width) >= (INT32_MAX - 7) / (unsigned) (bpp))
+	return -1;
+
+    return CAIRO_STRIDE_FOR_WIDTH_BPP (width, bpp);
+}
+slim_hidden_def (cairo_format_stride_for_width);
+
+/**
+ * cairo_image_surface_create_for_data:
+ * @data: a pointer to a buffer supplied by the application in which
+ *     to write contents. This pointer must be suitably aligned for any
+ *     kind of variable, (for example, a pointer returned by malloc).
+ * @format: the format of pixels in the buffer
+ * @width: the width of the image to be stored in the buffer
+ * @height: the height of the image to be stored in the buffer
+ * @stride: the number of bytes between the start of rows in the
+ *     buffer as allocated. This value should always be computed by
+ *     cairo_format_stride_for_width() before allocating the data
+ *     buffer.
+ *
+ * Creates an image surface for the provided pixel data. The output
+ * buffer must be kept around until the #cairo_surface_t is destroyed
+ * or cairo_surface_finish() is called on the surface.  The initial
+ * contents of @data will be used as the initial image contents; you
+ * must explicitly clear the buffer, using, for example,
+ * cairo_rectangle() and cairo_fill() if you want it cleared.
+ *
+ * Note that the stride may be larger than
+ * width*bytes_per_pixel to provide proper alignment for each pixel
+ * and row. This alignment is required to allow high-performance rendering
+ * within cairo. The correct way to obtain a legal stride value is to
+ * call cairo_format_stride_for_width() with the desired format and
+ * maximum image width value, and then use the resulting stride value
+ * to allocate the data and to create the image surface. See
+ * cairo_format_stride_for_width() for example code.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface in the case of an error such as out of
+ * memory or an invalid stride value. In case of invalid stride value
+ * the error status of the returned surface will be
+ * %CAIRO_STATUS_INVALID_STRIDE.  You can use
+ * cairo_surface_status() to check for this.
+ *
+ * See cairo_surface_set_user_data() for a means of attaching a
+ * destroy-notification fallback to the surface if necessary.
+ *
+ * Since: 1.0
+ **/
+    cairo_surface_t *
+cairo_image_surface_create_for_data (unsigned char     *data,
+				     cairo_format_t	format,
+				     int		width,
+				     int		height,
+				     int		stride)
+{
+    pixman_format_code_t pixman_format;
+    int minstride;
+
+    if (! CAIRO_FORMAT_VALID (format))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    if ((stride & (CAIRO_STRIDE_ALIGNMENT-1)) != 0)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+
+    if (! _cairo_image_surface_is_size_valid (width, height))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    minstride = cairo_format_stride_for_width (format, width);
+    if (stride < 0) {
+	if (stride > -minstride) {
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+	}
+    } else {
+	if (stride < minstride) {
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+	}
+    }
+
+    pixman_format = _cairo_format_to_pixman_format_code (format);
+    return _cairo_image_surface_create_with_pixman_format (data,
+							   pixman_format,
+							   width, height,
+							   stride);
+}
+slim_hidden_def (cairo_image_surface_create_for_data);
+
+/**
+ * cairo_image_surface_get_data:
+ * @surface: a #cairo_image_surface_t
+ *
+ * Get a pointer to the data of the image surface, for direct
+ * inspection or modification.
+ *
+ * A call to cairo_surface_flush() is required before accessing the
+ * pixel data to ensure that all pending drawing operations are
+ * finished. A call to cairo_surface_mark_dirty() is required after
+ * the data is modified.
+ *
+ * Return value: a pointer to the image data of this surface or %NULL
+ * if @surface is not an image surface, or if cairo_surface_finish()
+ * has been called.
+ *
+ * Since: 1.2
+ **/
+unsigned char *
+cairo_image_surface_get_data (cairo_surface_t *surface)
+{
+    cairo_image_surface_t *image_surface = (cairo_image_surface_t *) surface;
+
+    if (! _cairo_surface_is_image (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return image_surface->data;
+}
+slim_hidden_def (cairo_image_surface_get_data);
+
+/**
+ * cairo_image_surface_get_format:
+ * @surface: a #cairo_image_surface_t
+ *
+ * Get the format of the surface.
+ *
+ * Return value: the format of the surface
+ *
+ * Since: 1.2
+ **/
+cairo_format_t
+cairo_image_surface_get_format (cairo_surface_t *surface)
+{
+    cairo_image_surface_t *image_surface = (cairo_image_surface_t *) surface;
+
+    if (! _cairo_surface_is_image (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return CAIRO_FORMAT_INVALID;
+    }
+
+    return image_surface->format;
+}
+slim_hidden_def (cairo_image_surface_get_format);
+
+/**
+ * cairo_image_surface_get_width:
+ * @surface: a #cairo_image_surface_t
+ *
+ * Get the width of the image surface in pixels.
+ *
+ * Return value: the width of the surface in pixels.
+ *
+ * Since: 1.0
+ **/
+int
+cairo_image_surface_get_width (cairo_surface_t *surface)
+{
+    cairo_image_surface_t *image_surface = (cairo_image_surface_t *) surface;
+
+    if (! _cairo_surface_is_image (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return image_surface->width;
+}
+slim_hidden_def (cairo_image_surface_get_width);
+
+/**
+ * cairo_image_surface_get_height:
+ * @surface: a #cairo_image_surface_t
+ *
+ * Get the height of the image surface in pixels.
+ *
+ * Return value: the height of the surface in pixels.
+ *
+ * Since: 1.0
+ **/
+int
+cairo_image_surface_get_height (cairo_surface_t *surface)
+{
+    cairo_image_surface_t *image_surface = (cairo_image_surface_t *) surface;
+
+    if (! _cairo_surface_is_image (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return image_surface->height;
+}
+slim_hidden_def (cairo_image_surface_get_height);
+
+/**
+ * cairo_image_surface_get_stride:
+ * @surface: a #cairo_image_surface_t
+ *
+ * Get the stride of the image surface in bytes
+ *
+ * Return value: the stride of the image surface in bytes (or 0 if
+ * @surface is not an image surface). The stride is the distance in
+ * bytes from the beginning of one row of the image data to the
+ * beginning of the next row.
+ *
+ * Since: 1.2
+ **/
+int
+cairo_image_surface_get_stride (cairo_surface_t *surface)
+{
+
+    cairo_image_surface_t *image_surface = (cairo_image_surface_t *) surface;
+
+    if (! _cairo_surface_is_image (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return image_surface->stride;
+}
+slim_hidden_def (cairo_image_surface_get_stride);
+
+    cairo_format_t
+_cairo_format_from_content (cairo_content_t content)
+{
+    switch (content) {
+    case CAIRO_CONTENT_COLOR:
+	return CAIRO_FORMAT_RGB24;
+    case CAIRO_CONTENT_ALPHA:
+	return CAIRO_FORMAT_A8;
+    case CAIRO_CONTENT_COLOR_ALPHA:
+	return CAIRO_FORMAT_ARGB32;
+    }
+
+    ASSERT_NOT_REACHED;
+    return CAIRO_FORMAT_INVALID;
+}
+
+    cairo_content_t
+_cairo_content_from_format (cairo_format_t format)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+	return CAIRO_CONTENT_COLOR_ALPHA;
+    case CAIRO_FORMAT_RGB30:
+	return CAIRO_CONTENT_COLOR;
+    case CAIRO_FORMAT_RGB24:
+	return CAIRO_CONTENT_COLOR;
+    case CAIRO_FORMAT_RGB16_565:
+	return CAIRO_CONTENT_COLOR;
+    case CAIRO_FORMAT_A8:
+    case CAIRO_FORMAT_A1:
+	return CAIRO_CONTENT_ALPHA;
+    case CAIRO_FORMAT_INVALID:
+	break;
+    }
+
+    ASSERT_NOT_REACHED;
+    return CAIRO_CONTENT_COLOR_ALPHA;
+}
+
+    int
+_cairo_format_bits_per_pixel (cairo_format_t format)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB30:
+    case CAIRO_FORMAT_RGB24:
+	return 32;
+    case CAIRO_FORMAT_RGB16_565:
+	return 16;
+    case CAIRO_FORMAT_A8:
+	return 8;
+    case CAIRO_FORMAT_A1:
+	return 1;
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+cairo_surface_t *
+_cairo_image_surface_create_similar (void	       *abstract_other,
+				     cairo_content_t	content,
+				     int		width,
+				     int		height)
+{
+    cairo_image_surface_t *other = abstract_other;
+
+    TRACE ((stderr, "%s (other=%u)\n", __FUNCTION__, other->base.unique_id));
+
+    if (! _cairo_image_surface_is_size_valid (width, height))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    if (content == other->base.content) {
+	return _cairo_image_surface_create_with_pixman_format (NULL,
+							       other->pixman_format,
+							       width, height,
+							       0);
+    }
+
+    return _cairo_image_surface_create_with_content (content,
+						     width, height);
+}
+
+cairo_surface_t *
+_cairo_image_surface_snapshot (void *abstract_surface)
+{
+    cairo_image_surface_t *image = abstract_surface;
+    cairo_image_surface_t *clone;
+
+    /* If we own the image, we can simply steal the memory for the snapshot */
+    if (image->owns_data && image->base._finishing) {
+	clone = (cairo_image_surface_t *)
+	    _cairo_image_surface_create_for_pixman_image (image->pixman_image,
+							  image->pixman_format);
+	if (unlikely (clone->base.status))
+	    return &clone->base;
+
+	image->pixman_image = NULL;
+	image->owns_data = FALSE;
+
+	clone->transparency = image->transparency;
+	clone->color = image->color;
+
+	clone->owns_data = TRUE;
+	return &clone->base;
+    }
+
+    clone = (cairo_image_surface_t *)
+	_cairo_image_surface_create_with_pixman_format (NULL,
+							image->pixman_format,
+							image->width,
+							image->height,
+							0);
+    if (unlikely (clone->base.status))
+	return &clone->base;
+
+    if (clone->stride == image->stride) {
+	memcpy (clone->data, image->data, clone->stride * clone->height);
+    } else {
+	pixman_image_composite32 (PIXMAN_OP_SRC,
+				  image->pixman_image, NULL, clone->pixman_image,
+				  0, 0,
+				  0, 0,
+				  0, 0,
+				  image->width, image->height);
+    }
+    clone->base.is_clear = FALSE;
+    return &clone->base;
+}
+
+cairo_image_surface_t *
+_cairo_image_surface_map_to_image (void *abstract_other,
+				   const cairo_rectangle_int_t *extents)
+{
+    cairo_image_surface_t *other = abstract_other;
+    cairo_surface_t *surface;
+    uint8_t *data;
+
+    data = other->data;
+    data += extents->y * other->stride;
+    data += extents->x * PIXMAN_FORMAT_BPP (other->pixman_format)/ 8;
+
+    surface =
+	_cairo_image_surface_create_with_pixman_format (data,
+							other->pixman_format,
+							extents->width,
+							extents->height,
+							other->stride);
+
+    cairo_surface_set_device_offset (surface, -extents->x, -extents->y);
+    return (cairo_image_surface_t *) surface;
+}
+
+cairo_int_status_t
+_cairo_image_surface_unmap_image (void *abstract_surface,
+				  cairo_image_surface_t *image)
+{
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_image_surface_finish (void *abstract_surface)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    if (surface->pixman_image) {
+	pixman_image_unref (surface->pixman_image);
+	surface->pixman_image = NULL;
+    }
+
+    if (surface->owns_data) {
+	free (surface->data);
+	surface->data = NULL;
+    }
+
+    if (surface->parent) {
+	cairo_surface_t *parent = surface->parent;
+	surface->parent = NULL;
+	cairo_surface_destroy (parent);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_image_surface_assume_ownership_of_data (cairo_image_surface_t *surface)
+{
+    surface->owns_data = TRUE;
+}
+
+cairo_surface_t *
+_cairo_image_surface_source (void			*abstract_surface,
+			     cairo_rectangle_int_t	*extents)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    if (extents) {
+	extents->x = extents->y = 0;
+	extents->width = surface->width;
+	extents->height = surface->height;
+    }
+
+    return &surface->base;
+}
+
+cairo_status_t
+_cairo_image_surface_acquire_source_image (void                    *abstract_surface,
+					   cairo_image_surface_t  **image_out,
+					   void                   **image_extra)
+{
+    *image_out = abstract_surface;
+    *image_extra = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_image_surface_release_source_image (void                   *abstract_surface,
+					   cairo_image_surface_t  *image,
+					   void                   *image_extra)
+{
+}
+
+/* high level image interface */
+cairo_bool_t
+_cairo_image_surface_get_extents (void			  *abstract_surface,
+				  cairo_rectangle_int_t   *rectangle)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+    rectangle->width  = surface->width;
+    rectangle->height = surface->height;
+
+    return TRUE;
+}
+
+cairo_int_status_t
+_cairo_image_surface_paint (void			*abstract_surface,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    const cairo_clip_t		*clip)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->base.unique_id));
+
+    return _cairo_compositor_paint (surface->compositor,
+				    &surface->base, op, source, clip);
+}
+
+cairo_int_status_t
+_cairo_image_surface_mask (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_pattern_t	*mask,
+			   const cairo_clip_t		*clip)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->base.unique_id));
+
+    return _cairo_compositor_mask (surface->compositor,
+				   &surface->base, op, source, mask, clip);
+}
+
+cairo_int_status_t
+_cairo_image_surface_stroke (void			*abstract_surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     const cairo_path_fixed_t	*path,
+			     const cairo_stroke_style_t	*style,
+			     const cairo_matrix_t	*ctm,
+			     const cairo_matrix_t	*ctm_inverse,
+			     double			 tolerance,
+			     cairo_antialias_t		 antialias,
+			     const cairo_clip_t		*clip)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->base.unique_id));
+
+    return _cairo_compositor_stroke (surface->compositor, &surface->base,
+				     op, source, path,
+				     style, ctm, ctm_inverse,
+				     tolerance, antialias, clip);
+}
+
+cairo_int_status_t
+_cairo_image_surface_fill (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		 fill_rule,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   const cairo_clip_t		*clip)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->base.unique_id));
+
+    return _cairo_compositor_fill (surface->compositor, &surface->base,
+				   op, source, path,
+				   fill_rule, tolerance, antialias,
+				   clip);
+}
+
+cairo_int_status_t
+_cairo_image_surface_glyphs (void			*abstract_surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     cairo_glyph_t		*glyphs,
+			     int			 num_glyphs,
+			     cairo_scaled_font_t	*scaled_font,
+			     const cairo_clip_t		*clip)
+{
+    cairo_image_surface_t *surface = abstract_surface;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->base.unique_id));
+
+    return _cairo_compositor_glyphs (surface->compositor, &surface->base,
+				     op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
+
+void
+_cairo_image_surface_get_font_options (void                  *abstract_surface,
+				       cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_ON);
+    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_ON);
+}
+
+const cairo_surface_backend_t _cairo_image_surface_backend = {
+    CAIRO_SURFACE_TYPE_IMAGE,
+    _cairo_image_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_image_surface_create_similar,
+    NULL, /* create similar image */
+    _cairo_image_surface_map_to_image,
+    _cairo_image_surface_unmap_image,
+
+    _cairo_image_surface_source,
+    _cairo_image_surface_acquire_source_image,
+    _cairo_image_surface_release_source_image,
+    _cairo_image_surface_snapshot,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_image_surface_get_extents,
+    _cairo_image_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL,
+
+    _cairo_image_surface_paint,
+    _cairo_image_surface_mask,
+    _cairo_image_surface_stroke,
+    _cairo_image_surface_fill,
+    NULL, /* fill-stroke */
+    _cairo_image_surface_glyphs,
+};
+
+/* A convenience function for when one needs to coerce an image
+ * surface to an alternate format. */
+cairo_image_surface_t *
+_cairo_image_surface_coerce (cairo_image_surface_t *surface)
+{
+    return _cairo_image_surface_coerce_to_format (surface,
+		                                  _cairo_format_from_content (surface->base.content));
+}
+
+/* A convenience function for when one needs to coerce an image
+ * surface to an alternate format. */
+cairo_image_surface_t *
+_cairo_image_surface_coerce_to_format (cairo_image_surface_t *surface,
+			               cairo_format_t	      format)
+{
+    cairo_image_surface_t *clone;
+    cairo_status_t status;
+
+    status = surface->base.status;
+    if (unlikely (status))
+	return (cairo_image_surface_t *)_cairo_surface_create_in_error (status);
+
+    if (surface->format == format)
+	return (cairo_image_surface_t *)cairo_surface_reference(&surface->base);
+
+    clone = (cairo_image_surface_t *)
+	cairo_image_surface_create (format, surface->width, surface->height);
+    if (unlikely (clone->base.status))
+	return clone;
+
+    pixman_image_composite32 (PIXMAN_OP_SRC,
+                              surface->pixman_image, NULL, clone->pixman_image,
+                              0, 0,
+                              0, 0,
+                              0, 0,
+                              surface->width, surface->height);
+    clone->base.is_clear = FALSE;
+
+    clone->base.device_transform =
+	surface->base.device_transform;
+    clone->base.device_transform_inverse =
+	surface->base.device_transform_inverse;
+
+    return clone;
+}
+
+cairo_image_surface_t *
+_cairo_image_surface_create_from_image (cairo_image_surface_t *other,
+					pixman_format_code_t format,
+					int x, int y,
+					int width, int height, int stride)
+{
+    cairo_image_surface_t *surface;
+    cairo_status_t status;
+    pixman_image_t *image;
+    void *mem = NULL;
+
+    status = other->base.status;
+    if (unlikely (status))
+	goto cleanup;
+
+    if (stride) {
+	mem = _cairo_malloc_ab (height, stride);
+	if (unlikely (mem == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto cleanup;
+	}
+    }
+
+    image = pixman_image_create_bits (format, width, height, mem, stride);
+    if (unlikely (image == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto cleanup_mem;
+    }
+
+    surface = (cairo_image_surface_t *)
+	_cairo_image_surface_create_for_pixman_image (image, format);
+    if (unlikely (surface->base.status)) {
+	status = surface->base.status;
+	goto cleanup_image;
+    }
+
+    pixman_image_composite32 (PIXMAN_OP_SRC,
+                              other->pixman_image, NULL, image,
+                              x, y,
+                              0, 0,
+                              0, 0,
+                              width, height);
+    surface->base.is_clear = FALSE;
+    surface->owns_data = mem != NULL;
+
+    return surface;
+
+cleanup_image:
+    pixman_image_unref (image);
+cleanup_mem:
+    free (mem);
+cleanup:
+    return (cairo_image_surface_t *) _cairo_surface_create_in_error (status);
+}
+
+static cairo_image_transparency_t
+_cairo_image_compute_transparency (cairo_image_surface_t *image)
+{
+    int x, y;
+    cairo_image_transparency_t transparency;
+
+    if ((image->base.content & CAIRO_CONTENT_ALPHA) == 0)
+	return CAIRO_IMAGE_IS_OPAQUE;
+
+    if (image->base.is_clear)
+	return CAIRO_IMAGE_HAS_BILEVEL_ALPHA;
+
+    if ((image->base.content & CAIRO_CONTENT_COLOR) == 0) {
+	if (image->format == CAIRO_FORMAT_A1) {
+	    return CAIRO_IMAGE_HAS_BILEVEL_ALPHA;
+	} else if (image->format == CAIRO_FORMAT_A8) {
+	    for (y = 0; y < image->height; y++) {
+		uint8_t *alpha = (uint8_t *) (image->data + y * image->stride);
+
+		for (x = 0; x < image->width; x++, alpha++) {
+		    if (*alpha > 0 && *alpha < 255)
+			return CAIRO_IMAGE_HAS_ALPHA;
+		}
+	    }
+	    return CAIRO_IMAGE_HAS_BILEVEL_ALPHA;
+	} else {
+	    return CAIRO_IMAGE_HAS_ALPHA;
+	}
+    }
+
+    if (image->format == CAIRO_FORMAT_RGB16_565) {
+	return CAIRO_IMAGE_IS_OPAQUE;
+    }
+
+    if (image->format != CAIRO_FORMAT_ARGB32)
+	return CAIRO_IMAGE_HAS_ALPHA;
+
+    transparency = CAIRO_IMAGE_IS_OPAQUE;
+    for (y = 0; y < image->height; y++) {
+	uint32_t *pixel = (uint32_t *) (image->data + y * image->stride);
+
+	for (x = 0; x < image->width; x++, pixel++) {
+	    int a = (*pixel & 0xff000000) >> 24;
+	    if (a > 0 && a < 255) {
+		return CAIRO_IMAGE_HAS_ALPHA;
+	    } else if (a == 0) {
+		transparency = CAIRO_IMAGE_HAS_BILEVEL_ALPHA;
+	    }
+	}
+    }
+
+    return transparency;
+}
+
+cairo_image_transparency_t
+_cairo_image_analyze_transparency (cairo_image_surface_t *image)
+{
+    if (_cairo_surface_is_snapshot (&image->base)) {
+	if (image->transparency == CAIRO_IMAGE_UNKNOWN)
+	    image->transparency = _cairo_image_compute_transparency (image);
+
+	return image->transparency;
+    }
+
+    return _cairo_image_compute_transparency (image);
+}
+
+static cairo_image_color_t
+_cairo_image_compute_color (cairo_image_surface_t      *image)
+{
+    int x, y;
+    cairo_image_color_t color;
+
+    if (image->format == CAIRO_FORMAT_A1)
+	return CAIRO_IMAGE_IS_MONOCHROME;
+
+    if (image->format == CAIRO_FORMAT_A8)
+	return CAIRO_IMAGE_IS_GRAYSCALE;
+
+    if (image->format == CAIRO_FORMAT_ARGB32) {
+	color = CAIRO_IMAGE_IS_MONOCHROME;
+	for (y = 0; y < image->height; y++) {
+	    uint32_t *pixel = (uint32_t *) (image->data + y * image->stride);
+
+	    for (x = 0; x < image->width; x++, pixel++) {
+		int a = (*pixel & 0xff000000) >> 24;
+		int r = (*pixel & 0x00ff0000) >> 16;
+		int g = (*pixel & 0x0000ff00) >> 8;
+		int b = (*pixel & 0x000000ff);
+		if (a == 0) {
+		    r = g = b = 0;
+		} else {
+		    r = (r * 255 + a / 2) / a;
+		    g = (g * 255 + a / 2) / a;
+		    b = (b * 255 + a / 2) / a;
+		}
+		if (!(r == g && g == b))
+		    return CAIRO_IMAGE_IS_COLOR;
+		else if (r > 0 && r < 255)
+		    color = CAIRO_IMAGE_IS_GRAYSCALE;
+	    }
+	}
+	return color;
+    }
+
+    if (image->format == CAIRO_FORMAT_RGB24) {
+	color = CAIRO_IMAGE_IS_MONOCHROME;
+	for (y = 0; y < image->height; y++) {
+	    uint32_t *pixel = (uint32_t *) (image->data + y * image->stride);
+
+	    for (x = 0; x < image->width; x++, pixel++) {
+		int r = (*pixel & 0x00ff0000) >> 16;
+		int g = (*pixel & 0x0000ff00) >>  8;
+		int b = (*pixel & 0x000000ff);
+		if (!(r == g && g == b))
+		    return CAIRO_IMAGE_IS_COLOR;
+		else if (r > 0 && r < 255)
+		    color = CAIRO_IMAGE_IS_GRAYSCALE;
+	    }
+	}
+	return color;
+    }
+
+    return CAIRO_IMAGE_IS_COLOR;
+}
+
+cairo_image_color_t
+_cairo_image_analyze_color (cairo_image_surface_t      *image)
+{
+    if (_cairo_surface_is_snapshot (&image->base)) {
+	if (image->color == CAIRO_IMAGE_UNKNOWN_COLOR)
+	    image->color = _cairo_image_compute_color (image);
+
+	return image->color;
+    }
+
+    return _cairo_image_compute_color (image);
+}
+
+cairo_image_surface_t *
+_cairo_image_surface_clone_subimage (cairo_surface_t             *surface,
+				     const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_t *image;
+    cairo_surface_pattern_t pattern;
+    cairo_status_t status;
+
+    image = cairo_surface_create_similar_image (surface,
+						_cairo_format_from_content (surface->content),
+						extents->width,
+						extents->height);
+    if (image->status)
+	return to_image_surface (image);
+
+    /* TODO: check me with non-identity device_transform. Should we
+     * clone the scaling, too? */
+    cairo_surface_set_device_offset (image,
+				     -extents->x,
+				     -extents->y);
+
+    _cairo_pattern_init_for_surface (&pattern, surface);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+
+    status = _cairo_surface_paint (image,
+				   CAIRO_OPERATOR_SOURCE,
+				   &pattern.base,
+				   NULL);
+
+    _cairo_pattern_fini (&pattern.base);
+
+    if (unlikely (status))
+	goto error;
+
+    /* We use the parent as a flag during map-to-image/umap-image that the
+     * resultant image came from a fallback rather than as direct call
+     * to the backend's map_to_image(). Whilst we use it as a simple flag,
+     * we need to make sure the parent surface obeys the reference counting
+     * semantics and is consistent for all callers.
+     */
+    _cairo_image_surface_set_parent (to_image_surface (image),
+				     cairo_surface_reference (surface));
+
+    return to_image_surface (image);
+
+error:
+    cairo_surface_destroy (image);
+    return to_image_surface (_cairo_surface_create_in_error (status));
+}
diff --git a/libs/cairo-1.16.0/src/cairo-line-inline.h b/libs/cairo-1.16.0/src/cairo-line-inline.h
new file mode 100644
index 0000000..71cc5e7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-line-inline.h
@@ -0,0 +1,48 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2014 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ */
+
+#ifndef CAIRO_LINE_INLINE_H
+#define CAIRO_LINE_INLINE_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-fixed-private.h"
+#include "cairo-line-private.h"
+
+static inline int
+cairo_lines_equal (const cairo_line_t *a, const cairo_line_t *b)
+{
+    return (a->p1.x == b->p1.x && a->p1.y == b->p1.y &&
+	    a->p2.x == b->p2.x && a->p2.y == b->p2.y);
+}
+
+#endif /* CAIRO_LINE_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-line-private.h b/libs/cairo-1.16.0/src/cairo-line-private.h
new file mode 100644
index 0000000..08bf4b3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-line-private.h
@@ -0,0 +1,51 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2014 Intel Corporation, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ */
+
+#ifndef CAIRO_LINE_PRIVATE_H
+#define CAIRO_LINE_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-error-private.h"
+#include "cairo-compiler-private.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private int
+cairo_lines_compare_at_y(const cairo_line_t *a,
+			 const cairo_line_t *b,
+			 int y);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_LINE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-line.c b/libs/cairo-1.16.0/src/cairo-line.c
new file mode 100644
index 0000000..dc00a9c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-line.c
@@ -0,0 +1,306 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ * Copyright © 2014 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-line-inline.h"
+#include "cairo-slope-private.h"
+
+static int
+line_compare_for_y_against_x (const cairo_line_t *a,
+			      int32_t y,
+			      int32_t x)
+{
+    int32_t adx, ady;
+    int32_t dx, dy;
+    cairo_int64_t L, R;
+
+    if (x < a->p1.x && x < a->p2.x)
+	return 1;
+    if (x > a->p1.x && x > a->p2.x)
+	return -1;
+
+    adx = a->p2.x - a->p1.x;
+    dx = x - a->p1.x;
+
+    if (adx == 0)
+	return -dx;
+    if (dx == 0 || (adx ^ dx) < 0)
+	return adx;
+
+    dy = y - a->p1.y;
+    ady = a->p2.y - a->p1.y;
+
+    L = _cairo_int32x32_64_mul (dy, adx);
+    R = _cairo_int32x32_64_mul (dx, ady);
+
+    return _cairo_int64_cmp (L, R);
+}
+
+/*
+ * We need to compare the x-coordinates of a pair of lines for a particular y,
+ * without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ B_x + (Y - B_y) * B_dx / B_dy,
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy and B_dy (and (Y - A_y), (Y - B_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   A_dy * B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx * A_dy
+ *                                 - (Y - A_y) * A_dx * B_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 128 bit arithmetic. For certain, but common,
+ * input we can reduce this down to a single 32 bit compare by inspecting the
+ * deltas.
+ *
+ * (And put the burden of the work on developing fast 128 bit ops, which are
+ * required throughout the tessellator.)
+ *
+ * See the similar discussion for _slope_compare().
+ */
+static int
+lines_compare_x_for_y_general (const cairo_line_t *a,
+			       const cairo_line_t *b,
+			       int32_t y)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t dx = 0;
+    int32_t adx = 0, ady = 0;
+    int32_t bdx = 0, bdy = 0;
+    enum {
+       HAVE_NONE    = 0x0,
+       HAVE_DX      = 0x1,
+       HAVE_ADX     = 0x2,
+       HAVE_DX_ADX  = HAVE_DX | HAVE_ADX,
+       HAVE_BDX     = 0x4,
+       HAVE_DX_BDX  = HAVE_DX | HAVE_BDX,
+       HAVE_ADX_BDX = HAVE_ADX | HAVE_BDX,
+       HAVE_ALL     = HAVE_DX | HAVE_ADX | HAVE_BDX
+    } have_dx_adx_bdx = HAVE_ALL;
+
+    ady = a->p2.y - a->p1.y;
+    adx = a->p2.x - a->p1.x;
+    if (adx == 0)
+	have_dx_adx_bdx &= ~HAVE_ADX;
+
+    bdy = b->p2.y - b->p1.y;
+    bdx = b->p2.x - b->p1.x;
+    if (bdx == 0)
+	have_dx_adx_bdx &= ~HAVE_BDX;
+
+    dx = a->p1.x - b->p1.x;
+    if (dx == 0)
+	have_dx_adx_bdx &= ~HAVE_DX;
+
+#define L _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (ady, bdy), dx)
+#define A _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (adx, bdy), y - a->p1.y)
+#define B _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (bdx, ady), y - b->p1.y)
+    switch (have_dx_adx_bdx) {
+    default:
+    case HAVE_NONE:
+	return 0;
+    case HAVE_DX:
+	/* A_dy * B_dy * (A_x - B_x) ∘ 0 */
+	return dx; /* ady * bdy is positive definite */
+    case HAVE_ADX:
+	/* 0 ∘  - (Y - A_y) * A_dx * B_dy */
+	return adx; /* bdy * (y - a->top.y) is positive definite */
+    case HAVE_BDX:
+	/* 0 ∘ (Y - B_y) * B_dx * A_dy */
+	return -bdx; /* ady * (y - b->top.y) is positive definite */
+    case HAVE_ADX_BDX:
+	/*  0 ∘ (Y - B_y) * B_dx * A_dy - (Y - A_y) * A_dx * B_dy */
+	if ((adx ^ bdx) < 0) {
+	    return adx;
+	} else if (a->p1.y == b->p1.y) { /* common origin */
+	    cairo_int64_t adx_bdy, bdx_ady;
+
+	    /* ∴ A_dx * B_dy ∘ B_dx * A_dy */
+
+	    adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	    bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	    return _cairo_int64_cmp (adx_bdy, bdx_ady);
+	} else
+	    return _cairo_int128_cmp (A, B);
+    case HAVE_DX_ADX:
+	/* A_dy * (A_x - B_x) ∘ - (Y - A_y) * A_dx */
+	if ((-adx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t ady_dx, dy_adx;
+
+	    ady_dx = _cairo_int32x32_64_mul (ady, dx);
+	    dy_adx = _cairo_int32x32_64_mul (a->p1.y - y, adx);
+
+	    return _cairo_int64_cmp (ady_dx, dy_adx);
+	}
+    case HAVE_DX_BDX:
+	/* B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx */
+	if ((bdx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t bdy_dx, dy_bdx;
+
+	    bdy_dx = _cairo_int32x32_64_mul (bdy, dx);
+	    dy_bdx = _cairo_int32x32_64_mul (y - b->p1.y, bdx);
+
+	    return _cairo_int64_cmp (bdy_dx, dy_bdx);
+	}
+    case HAVE_ALL:
+	/* XXX try comparing (a->p2.x - b->p2.x) et al */
+	return _cairo_int128_cmp (L, _cairo_int128_sub (B, A));
+    }
+#undef B
+#undef A
+#undef L
+}
+
+static int
+lines_compare_x_for_y (const cairo_line_t *a,
+		       const cairo_line_t *b,
+		       int32_t y)
+{
+    /* If the sweep-line is currently on an end-point of a line,
+     * then we know its precise x value (and considering that we often need to
+     * compare events at end-points, this happens frequently enough to warrant
+     * special casing).
+     */
+    enum {
+       HAVE_NEITHER = 0x0,
+       HAVE_AX      = 0x1,
+       HAVE_BX      = 0x2,
+       HAVE_BOTH    = HAVE_AX | HAVE_BX
+    } have_ax_bx = HAVE_BOTH;
+    int32_t ax = 0, bx = 0;
+
+    if (y == a->p1.y)
+	ax = a->p1.x;
+    else if (y == a->p2.y)
+	ax = a->p2.x;
+    else
+	have_ax_bx &= ~HAVE_AX;
+
+    if (y == b->p1.y)
+	bx = b->p1.x;
+    else if (y == b->p2.y)
+	bx = b->p2.x;
+    else
+	have_ax_bx &= ~HAVE_BX;
+
+    switch (have_ax_bx) {
+    default:
+    case HAVE_NEITHER:
+	return lines_compare_x_for_y_general (a, b, y);
+    case HAVE_AX:
+	return -line_compare_for_y_against_x (b, y, ax);
+    case HAVE_BX:
+	return line_compare_for_y_against_x (a, y, bx);
+    case HAVE_BOTH:
+	return ax - bx;
+    }
+}
+
+static int bbox_compare (const cairo_line_t *a,
+			 const cairo_line_t *b)
+{
+    int32_t amin, amax;
+    int32_t bmin, bmax;
+
+    if (a->p1.x < a->p2.x) {
+	amin = a->p1.x;
+	amax = a->p2.x;
+    } else {
+	amin = a->p2.x;
+	amax = a->p1.x;
+    }
+
+    if (b->p1.x < b->p2.x) {
+	bmin = b->p1.x;
+	bmax = b->p2.x;
+    } else {
+	bmin = b->p2.x;
+	bmax = b->p1.x;
+    }
+
+    if (amax < bmin)
+	return -1;
+
+    if (amin > bmax)
+	return +1;
+
+    return 0;
+}
+
+int cairo_lines_compare_at_y (const cairo_line_t *a,
+			      const cairo_line_t *b,
+			      int y)
+{
+    cairo_slope_t sa, sb;
+    int ret;
+
+    if (cairo_lines_equal (a, b))
+	return 0;
+
+    /* Don't bother solving for abscissa if the edges' bounding boxes
+     * can be used to order them.
+     */
+    ret = bbox_compare (a, b);
+    if (ret)
+	return ret;
+
+    ret = lines_compare_x_for_y (a, b, y);
+    if (ret)
+	return ret;
+
+    _cairo_slope_init (&sa, &a->p1, &a->p2);
+    _cairo_slope_init (&sb, &b->p1, &b->p2);
+
+    return _cairo_slope_compare (&sb, &sa);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-list-inline.h b/libs/cairo-1.16.0/src/cairo-list-inline.h
new file mode 100644
index 0000000..0955178
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-list-inline.h
@@ -0,0 +1,215 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#ifndef CAIRO_LIST_INLINE_H
+#define CAIRO_LIST_INLINE_H
+
+#include "cairo-list-private.h"
+
+#define cairo_list_entry(ptr, type, member) \
+	cairo_container_of(ptr, type, member)
+
+#define cairo_list_first_entry(ptr, type, member) \
+	cairo_list_entry((ptr)->next, type, member)
+
+#define cairo_list_last_entry(ptr, type, member) \
+	cairo_list_entry((ptr)->prev, type, member)
+
+#define cairo_list_foreach(pos, head)			\
+	for (pos = (head)->next; pos != (head);	pos = pos->next)
+
+#define cairo_list_foreach_entry(pos, type, head, member)		\
+	for (pos = cairo_list_entry((head)->next, type, member);\
+	     &pos->member != (head);					\
+	     pos = cairo_list_entry(pos->member.next, type, member))
+
+#define cairo_list_foreach_entry_safe(pos, n, type, head, member)	\
+	for (pos = cairo_list_entry ((head)->next, type, member),\
+	     n = cairo_list_entry (pos->member.next, type, member);\
+	     &pos->member != (head);					\
+	     pos = n, n = cairo_list_entry (n->member.next, type, member))
+
+#define cairo_list_foreach_entry_reverse(pos, type, head, member)	\
+	for (pos = cairo_list_entry((head)->prev, type, member);\
+	     &pos->member != (head);					\
+	     pos = cairo_list_entry(pos->member.prev, type, member))
+
+#define cairo_list_foreach_entry_reverse_safe(pos, n, type, head, member)	\
+	for (pos = cairo_list_entry((head)->prev, type, member),\
+	     n = cairo_list_entry (pos->member.prev, type, member);\
+	     &pos->member != (head);					\
+	     pos = n, n = cairo_list_entry (n->member.prev, type, member))
+
+#ifdef CAIRO_LIST_DEBUG
+static inline void
+_cairo_list_validate (const cairo_list_t *link)
+{
+    assert (link->next->prev == link);
+    assert (link->prev->next == link);
+}
+static inline void
+cairo_list_validate (const cairo_list_t *head)
+{
+    cairo_list_t *link;
+
+    cairo_list_foreach (link, head)
+	_cairo_list_validate (link);
+}
+static inline cairo_bool_t
+cairo_list_is_empty (const cairo_list_t *head);
+static inline void
+cairo_list_validate_is_empty (const cairo_list_t *head)
+{
+    assert (head->next == NULL || (cairo_list_is_empty (head) && head->next == head->prev));
+}
+#else
+#define _cairo_list_validate(link)
+#define cairo_list_validate(head)
+#define cairo_list_validate_is_empty(head)
+#endif
+
+static inline void
+cairo_list_init (cairo_list_t *entry)
+{
+    entry->next = entry;
+    entry->prev = entry;
+}
+
+static inline void
+__cairo_list_add (cairo_list_t *entry,
+	          cairo_list_t *prev,
+		  cairo_list_t *next)
+{
+    next->prev = entry;
+    entry->next = next;
+    entry->prev = prev;
+    prev->next = entry;
+}
+
+static inline void
+cairo_list_add (cairo_list_t *entry, cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    cairo_list_validate_is_empty (entry);
+    __cairo_list_add (entry, head, head->next);
+    cairo_list_validate (head);
+}
+
+static inline void
+cairo_list_add_tail (cairo_list_t *entry, cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    cairo_list_validate_is_empty (entry);
+    __cairo_list_add (entry, head->prev, head);
+    cairo_list_validate (head);
+}
+
+static inline void
+__cairo_list_del (cairo_list_t *prev, cairo_list_t *next)
+{
+    next->prev = prev;
+    prev->next = next;
+}
+
+static inline void
+_cairo_list_del (cairo_list_t *entry)
+{
+    __cairo_list_del (entry->prev, entry->next);
+}
+
+static inline void
+cairo_list_del (cairo_list_t *entry)
+{
+    _cairo_list_del (entry);
+    cairo_list_init (entry);
+}
+
+static inline void
+cairo_list_move (cairo_list_t *entry, cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    __cairo_list_del (entry->prev, entry->next);
+    __cairo_list_add (entry, head, head->next);
+    cairo_list_validate (head);
+}
+
+static inline void
+cairo_list_move_tail (cairo_list_t *entry, cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    __cairo_list_del (entry->prev, entry->next);
+    __cairo_list_add (entry, head->prev, head);
+    cairo_list_validate (head);
+}
+
+static inline void
+cairo_list_swap (cairo_list_t *entry, cairo_list_t *other)
+{
+    __cairo_list_add (entry, other->prev, other->next);
+    cairo_list_init (other);
+}
+
+static inline cairo_bool_t
+cairo_list_is_first (const cairo_list_t *entry,
+	             const cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    return entry->prev == head;
+}
+
+static inline cairo_bool_t
+cairo_list_is_last (const cairo_list_t *entry,
+	            const cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    return entry->next == head;
+}
+
+static inline cairo_bool_t
+cairo_list_is_empty (const cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    return head->next == head;
+}
+
+static inline cairo_bool_t
+cairo_list_is_singular (const cairo_list_t *head)
+{
+    cairo_list_validate (head);
+    return head->next == head || head->next == head->prev;
+}
+
+#endif /* CAIRO_LIST_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-list-private.h b/libs/cairo-1.16.0/src/cairo-list-private.h
new file mode 100644
index 0000000..9f39b66
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-list-private.h
@@ -0,0 +1,48 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#ifndef CAIRO_LIST_PRIVATE_H
+#define CAIRO_LIST_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+
+/* Basic circular, doubly linked list implementation */
+
+typedef struct _cairo_list {
+    struct _cairo_list *next, *prev;
+} cairo_list_t;
+
+#endif /* CAIRO_LIST_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-lzw.c b/libs/cairo-1.16.0/src/cairo-lzw.c
new file mode 100644
index 0000000..f27b3c3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-lzw.c
@@ -0,0 +1,404 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+typedef struct _lzw_buf {
+    cairo_status_t status;
+
+    unsigned char *data;
+    int data_size;
+    int num_data;
+    uint32_t pending;
+    unsigned int pending_bits;
+} lzw_buf_t;
+
+/* An lzw_buf_t is a simple, growable chunk of memory for holding
+ * variable-size objects of up to 16 bits each.
+ *
+ * Initialize an lzw_buf_t to the given size in bytes.
+ *
+ * To store objects into the lzw_buf_t, call _lzw_buf_store_bits and
+ * when finished, call _lzw_buf_store_pending, (which flushes out the
+ * last few bits that hadn't yet made a complete byte yet).
+ *
+ * Instead of returning failure from any functions, lzw_buf_t provides
+ * a status value that the caller can query, (and should query at
+ * least once when done with the object). The status value will be
+ * either %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY;
+ */
+static void
+_lzw_buf_init (lzw_buf_t *buf, int size)
+{
+    if (size == 0)
+	size = 16;
+
+    buf->status = CAIRO_STATUS_SUCCESS;
+    buf->data_size = size;
+    buf->num_data = 0;
+    buf->pending = 0;
+    buf->pending_bits = 0;
+
+    buf->data = _cairo_malloc (size);
+    if (unlikely (buf->data == NULL)) {
+	buf->data_size = 0;
+	buf->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return;
+    }
+}
+
+/* Increase the buffer size by doubling.
+ *
+ * Returns %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ */
+static cairo_status_t
+_lzw_buf_grow (lzw_buf_t *buf)
+{
+    int new_size = buf->data_size * 2;
+    unsigned char *new_data;
+
+    if (buf->status)
+	return buf->status;
+
+    new_data = NULL;
+    /* check for integer overflow */
+    if (new_size / 2 == buf->data_size)
+	new_data = realloc (buf->data, new_size);
+
+    if (unlikely (new_data == NULL)) {
+	free (buf->data);
+	buf->data_size = 0;
+	buf->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return buf->status;
+    }
+
+    buf->data = new_data;
+    buf->data_size = new_size;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Store the lowest num_bits bits of values into buf.
+ *
+ * Note: The bits of value above size_in_bits must be 0, (so don't lie
+ * about the size).
+ *
+ * See also _lzw_buf_store_pending which must be called after the last
+ * call to _lzw_buf_store_bits.
+ *
+ * Sets buf->status to either %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY.
+ */
+static void
+_lzw_buf_store_bits (lzw_buf_t *buf, uint16_t value, int num_bits)
+{
+    cairo_status_t status;
+
+    assert (value <= (1 << num_bits) - 1);
+
+    if (buf->status)
+	return;
+
+    buf->pending = (buf->pending << num_bits) | value;
+    buf->pending_bits += num_bits;
+
+    while (buf->pending_bits >= 8) {
+	if (buf->num_data >= buf->data_size) {
+	    status = _lzw_buf_grow (buf);
+	    if (unlikely (status))
+		return;
+	}
+	buf->data[buf->num_data++] = buf->pending >> (buf->pending_bits - 8);
+	buf->pending_bits -= 8;
+    }
+}
+
+/* Store the last remaining pending bits into the buffer.
+ *
+ * Note: This function must be called after the last call to
+ * _lzw_buf_store_bits.
+ *
+ * Sets buf->status to either %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY.
+ */
+static void
+_lzw_buf_store_pending  (lzw_buf_t *buf)
+{
+    cairo_status_t status;
+
+    if (buf->status)
+	return;
+
+    if (buf->pending_bits == 0)
+	return;
+
+    assert (buf->pending_bits < 8);
+
+    if (buf->num_data >= buf->data_size) {
+	status = _lzw_buf_grow (buf);
+	if (unlikely (status))
+	    return;
+    }
+
+    buf->data[buf->num_data++] = buf->pending << (8 - buf->pending_bits);
+    buf->pending_bits = 0;
+}
+
+/* LZW defines a few magic code values */
+#define LZW_CODE_CLEAR_TABLE	256
+#define LZW_CODE_EOD		257
+#define LZW_CODE_FIRST		258
+
+/* We pack three separate values into a symbol as follows:
+ *
+ * 12 bits (31 down to 20):	CODE: code value used to represent this symbol
+ * 12 bits (19 down to  8):	PREV: previous code value in chain
+ *  8 bits ( 7 down to  0):	NEXT: next byte value in chain
+ */
+typedef uint32_t lzw_symbol_t;
+
+#define LZW_SYMBOL_SET(sym, prev, next)			((sym) = ((prev) << 8)|(next))
+#define LZW_SYMBOL_SET_CODE(sym, code, prev, next)	((sym) = ((code << 20)|(prev) << 8)|(next))
+#define LZW_SYMBOL_GET_CODE(sym)			(((sym) >> 20))
+#define LZW_SYMBOL_GET_PREV(sym)			(((sym) >>  8) & 0x7ff)
+#define LZW_SYMBOL_GET_BYTE(sym)			(((sym) >>  0) & 0x0ff)
+
+/* The PREV+NEXT fields can be seen as the key used to fetch values
+ * from the hash table, while the code is the value fetched.
+ */
+#define LZW_SYMBOL_KEY_MASK	0x000fffff
+
+/* Since code values are only stored starting with 258 we can safely
+ * use a zero value to represent free slots in the hash table. */
+#define LZW_SYMBOL_FREE		0x00000000
+
+/* These really aren't very free for modifying. First, the PostScript
+ * specification sets the 9-12 bit range. Second, the encoding of
+ * lzw_symbol_t above also relies on 2 of LZW_BITS_MAX plus one byte
+ * fitting within 32 bits.
+ *
+ * But other than that, the LZW compression scheme could function with
+ * more bits per code.
+ */
+#define LZW_BITS_MIN		9
+#define LZW_BITS_MAX		12
+#define LZW_BITS_BOUNDARY(bits)	((1<<(bits))-1)
+#define LZW_MAX_SYMBOLS		(1<<LZW_BITS_MAX)
+
+#define LZW_SYMBOL_TABLE_SIZE	9013
+#define LZW_SYMBOL_MOD1		LZW_SYMBOL_TABLE_SIZE
+#define LZW_SYMBOL_MOD2		9011
+
+typedef struct _lzw_symbol_table {
+    lzw_symbol_t table[LZW_SYMBOL_TABLE_SIZE];
+} lzw_symbol_table_t;
+
+/* Initialize the hash table to entirely empty */
+static void
+_lzw_symbol_table_init (lzw_symbol_table_t *table)
+{
+    memset (table->table, 0, LZW_SYMBOL_TABLE_SIZE * sizeof (lzw_symbol_t));
+}
+
+/* Lookup a symbol in the symbol table. The PREV and NEXT fields of
+ * symbol form the key for the lookup.
+ *
+ * If successful, then this function returns %TRUE and slot_ret will be
+ * left pointing at the result that will have the CODE field of
+ * interest.
+ *
+ * If the lookup fails, then this function returns %FALSE and slot_ret
+ * will be pointing at the location in the table to which a new CODE
+ * value should be stored along with PREV and NEXT.
+ */
+static cairo_bool_t
+_lzw_symbol_table_lookup (lzw_symbol_table_t	 *table,
+			  lzw_symbol_t		  symbol,
+			  lzw_symbol_t		**slot_ret)
+{
+    /* The algorithm here is identical to that in cairo-hash.c. We
+     * copy it here to allow for a rather more efficient
+     * implementation due to several circumstances that do not apply
+     * to the more general case:
+     *
+     * 1) We have a known bound on the total number of symbols, so we
+     *    have a fixed-size table without any copying when growing
+     *
+     * 2) We never delete any entries, so we don't need to
+     *    support/check for DEAD entries during lookup.
+     *
+     * 3) The object fits in 32 bits so we store each object in its
+     *    entirety within the table rather than storing objects
+     *    externally and putting pointers in the table, (which here
+     *    would just double the storage requirements and have negative
+     *    impacts on memory locality).
+     */
+    int i, idx, step, hash = symbol & LZW_SYMBOL_KEY_MASK;
+    lzw_symbol_t candidate;
+
+    idx = hash % LZW_SYMBOL_MOD1;
+    step = 0;
+
+    *slot_ret = NULL;
+    for (i = 0; i < LZW_SYMBOL_TABLE_SIZE; i++)
+    {
+	candidate = table->table[idx];
+	if (candidate == LZW_SYMBOL_FREE)
+	{
+	    *slot_ret = &table->table[idx];
+	    return FALSE;
+	}
+	else /* candidate is LIVE */
+	{
+	    if ((candidate & LZW_SYMBOL_KEY_MASK) ==
+		(symbol & LZW_SYMBOL_KEY_MASK))
+	    {
+		*slot_ret = &table->table[idx];
+		return TRUE;
+	    }
+	}
+
+	if (step == 0) {
+	    step = hash % LZW_SYMBOL_MOD2;
+	    if (step == 0)
+		step = 1;
+	}
+
+	idx += step;
+	if (idx >= LZW_SYMBOL_TABLE_SIZE)
+	    idx -= LZW_SYMBOL_TABLE_SIZE;
+    }
+
+    return FALSE;
+}
+
+/* Compress a bytestream using the LZW algorithm.
+ *
+ * This is an original implementation based on reading the
+ * specification of the LZWDecode filter in the PostScript Language
+ * Reference. The free parameters in the LZW algorithm are set to the
+ * values mandated by PostScript, (symbols encoded with widths from 9
+ * to 12 bits).
+ *
+ * This function returns a pointer to a newly allocated buffer holding
+ * the compressed data, or %NULL if an out-of-memory situation
+ * occurs.
+ *
+ * Notice that any one of the _lzw_buf functions called here could
+ * trigger an out-of-memory condition. But lzw_buf_t uses cairo's
+ * shutdown-on-error idiom, so it's safe to continue to call into
+ * lzw_buf without having to check for errors, (until a final check at
+ * the end).
+ */
+unsigned char *
+_cairo_lzw_compress (unsigned char *data, unsigned long *size_in_out)
+{
+    int bytes_remaining = *size_in_out;
+    lzw_buf_t buf;
+    lzw_symbol_table_t table;
+    lzw_symbol_t symbol, *slot = NULL; /* just to squelch a warning */
+    int code_next = LZW_CODE_FIRST;
+    int code_bits = LZW_BITS_MIN;
+    int prev, next = 0; /* just to squelch a warning */
+
+    if (*size_in_out == 0)
+	return NULL;
+
+    _lzw_buf_init (&buf, *size_in_out);
+
+    _lzw_symbol_table_init (&table);
+
+    /* The LZW header is a clear table code. */
+    _lzw_buf_store_bits (&buf, LZW_CODE_CLEAR_TABLE, code_bits);
+
+    while (1) {
+
+	/* Find the longest existing code in the symbol table that
+	 * matches the current input, if any. */
+	prev = *data++;
+	bytes_remaining--;
+	if (bytes_remaining) {
+	    do
+	    {
+		next = *data++;
+		bytes_remaining--;
+		LZW_SYMBOL_SET (symbol, prev, next);
+		if (_lzw_symbol_table_lookup (&table, symbol, &slot))
+		    prev = LZW_SYMBOL_GET_CODE (*slot);
+	    } while (bytes_remaining && *slot != LZW_SYMBOL_FREE);
+	    if (*slot == LZW_SYMBOL_FREE) {
+		data--;
+		bytes_remaining++;
+	    }
+	}
+
+	/* Write the code into the output. This is either a byte read
+	 * directly from the input, or a code from the last successful
+	 * lookup. */
+	_lzw_buf_store_bits (&buf, prev, code_bits);
+
+	if (bytes_remaining == 0)
+	    break;
+
+	LZW_SYMBOL_SET_CODE (*slot, code_next++, prev, next);
+
+	if (code_next > LZW_BITS_BOUNDARY(code_bits))
+	{
+	    code_bits++;
+	    if (code_bits > LZW_BITS_MAX) {
+		_lzw_symbol_table_init (&table);
+		_lzw_buf_store_bits (&buf, LZW_CODE_CLEAR_TABLE, code_bits - 1);
+		code_bits = LZW_BITS_MIN;
+		code_next = LZW_CODE_FIRST;
+	    }
+	}
+    }
+
+    /* The LZW footer is an end-of-data code. */
+    _lzw_buf_store_bits (&buf, LZW_CODE_EOD, code_bits);
+
+    _lzw_buf_store_pending (&buf);
+
+    /* See if we ever ran out of memory while writing to buf. */
+    if (buf.status == CAIRO_STATUS_NO_MEMORY) {
+	*size_in_out = 0;
+	return NULL;
+    }
+
+    assert (buf.status == CAIRO_STATUS_SUCCESS);
+
+    *size_in_out = buf.num_data;
+    return buf.data;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-malloc-private.h b/libs/cairo-1.16.0/src/cairo-malloc-private.h
new file mode 100644
index 0000000..570f7cb
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-malloc-private.h
@@ -0,0 +1,149 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#ifndef CAIRO_MALLOC_PRIVATE_H
+#define CAIRO_MALLOC_PRIVATE_H
+
+#include "cairo-wideint-private.h"
+#include <stdlib.h>
+
+#if HAVE_MEMFAULT
+#include <memfault.h>
+#define CAIRO_INJECT_FAULT() MEMFAULT_INJECT_FAULT()
+#else
+#define CAIRO_INJECT_FAULT() 0
+#endif
+
+/**
+ * _cairo_malloc:
+ * @size: size in bytes
+ *
+ * Allocate @size memory using malloc().
+ * The memory should be freed using free().
+ * malloc is skipped, if 0 bytes are requested, and %NULL will be returned.
+ *
+ * Return value: A pointer to the newly allocated memory, or %NULL in
+ * case of malloc() failure or size is 0.
+ **/
+
+#define _cairo_malloc(size) \
+   ((size) > 0 ? malloc((unsigned) (size)) : NULL)
+
+/**
+ * _cairo_malloc_ab:
+ * @a: number of elements to allocate
+ * @size: size of each element
+ *
+ * Allocates @a*@size memory using _cairo_malloc(), taking care to not
+ * overflow when doing the multiplication.  Behaves much like
+ * calloc(), except that the returned memory is not set to zero.
+ * The memory should be freed using free().
+ *
+ * @size should be a constant so that the compiler can optimize
+ * out a constant division.
+ *
+ * Return value: A pointer to the newly allocated memory, or %NULL in
+ * case of malloc() failure or overflow.
+ **/
+
+#define _cairo_malloc_ab(a, size) \
+  ((size) && (unsigned) (a) >= INT32_MAX / (unsigned) (size) ? NULL : \
+   _cairo_malloc((unsigned) (a) * (unsigned) (size)))
+
+/**
+ * _cairo_realloc_ab:
+ * @ptr: original pointer to block of memory to be resized
+ * @a: number of elements to allocate
+ * @size: size of each element
+ *
+ * Reallocates @ptr a block of @a*@size memory using realloc(), taking
+ * care to not overflow when doing the multiplication.  The memory
+ * should be freed using free().
+ *
+ * @size should be a constant so that the compiler can optimize
+ * out a constant division.
+ *
+ * Return value: A pointer to the newly allocated memory, or %NULL in
+ * case of realloc() failure or overflow (whereupon the original block
+ * of memory * is left untouched).
+ **/
+
+#define _cairo_realloc_ab(ptr, a, size) \
+  ((size) && (unsigned) (a) >= INT32_MAX / (unsigned) (size) ? NULL : \
+   realloc(ptr, (unsigned) (a) * (unsigned) (size)))
+
+/**
+ * _cairo_malloc_abc:
+ * @a: first factor of number of elements to allocate
+ * @b: second factor of number of elements to allocate
+ * @size: size of each element
+ *
+ * Allocates @a*@b*@size memory using _cairo_malloc(), taking care to not
+ * overflow when doing the multiplication.  Behaves like
+ * _cairo_malloc_ab().  The memory should be freed using free().
+ *
+ * @size should be a constant so that the compiler can optimize
+ * out a constant division.
+ *
+ * Return value: A pointer to the newly allocated memory, or %NULL in
+ * case of malloc() failure or overflow.
+ **/
+
+#define _cairo_malloc_abc(a, b, size) \
+  ((b) && (unsigned) (a) >= INT32_MAX / (unsigned) (b) ? NULL : \
+   (size) && (unsigned) ((a)*(b)) >= INT32_MAX / (unsigned) (size) ? NULL : \
+   _cairo_malloc((unsigned) (a) * (unsigned) (b) * (unsigned) (size)))
+
+/**
+ * _cairo_malloc_ab_plus_c:
+ * @a: number of elements to allocate
+ * @size: size of each element
+ * @c: additional size to allocate
+ *
+ * Allocates @a*@size+@c memory using _cairo_malloc(), taking care to not
+ * overflow when doing the arithmetic.  Behaves similar to
+ * _cairo_malloc_ab().  The memory should be freed using free().
+ *
+ * Return value: A pointer to the newly allocated memory, or %NULL in
+ * case of malloc() failure or overflow.
+ **/
+
+#define _cairo_malloc_ab_plus_c(a, size, c) \
+  ((size) && (unsigned) (a) >= INT32_MAX / (unsigned) (size) ? NULL : \
+   (unsigned) (c) >= INT32_MAX - (unsigned) (a) * (unsigned) (size) ? NULL : \
+   _cairo_malloc((unsigned) (a) * (unsigned) (size) + (unsigned) (c)))
+
+#endif /* CAIRO_MALLOC_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-mask-compositor.c b/libs/cairo-1.16.0/src/cairo-mask-compositor.c
new file mode 100644
index 0000000..4d6b118
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mask-compositor.c
@@ -0,0 +1,1481 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* This compositor renders the shape to a mask using an image surface
+ * then calls composite.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-compositor-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-pattern-inline.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-observer-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-surface-subsurface-private.h"
+
+typedef cairo_int_status_t
+(*draw_func_t) (const cairo_mask_compositor_t *compositor,
+		cairo_surface_t			*dst,
+		void				*closure,
+		cairo_operator_t		 op,
+		const cairo_pattern_t		*src,
+		const cairo_rectangle_int_t	*src_sample,
+		int				 dst_x,
+		int				 dst_y,
+		const cairo_rectangle_int_t	*extents,
+		cairo_clip_t			*clip);
+
+static void do_unaligned_row(void (*blt)(void *closure,
+					 int16_t x, int16_t y,
+					 int16_t w, int16_t h,
+					 uint16_t coverage),
+			     void *closure,
+			     const cairo_box_t *b,
+			     int tx, int y, int h,
+			     uint16_t coverage)
+{
+    int x1 = _cairo_fixed_integer_part (b->p1.x) - tx;
+    int x2 = _cairo_fixed_integer_part (b->p2.x) - tx;
+    if (x2 > x1) {
+	if (! _cairo_fixed_is_integer (b->p1.x)) {
+	    blt(closure, x1, y, 1, h,
+		coverage * (256 - _cairo_fixed_fractional_part (b->p1.x)));
+	    x1++;
+	}
+
+	if (x2 > x1)
+	    blt(closure, x1, y, x2-x1, h, (coverage << 8) - (coverage >> 8));
+
+	if (! _cairo_fixed_is_integer (b->p2.x))
+	    blt(closure, x2, y, 1, h,
+		coverage * _cairo_fixed_fractional_part (b->p2.x));
+    } else
+	blt(closure, x1, y, 1, h,
+	    coverage * (b->p2.x - b->p1.x));
+}
+
+static void do_unaligned_box(void (*blt)(void *closure,
+					 int16_t x, int16_t y,
+					 int16_t w, int16_t h,
+					 uint16_t coverage),
+			     void *closure,
+			     const cairo_box_t *b, int tx, int ty)
+{
+    int y1 = _cairo_fixed_integer_part (b->p1.y) - ty;
+    int y2 = _cairo_fixed_integer_part (b->p2.y) - ty;
+    if (y2 > y1) {
+	if (! _cairo_fixed_is_integer (b->p1.y)) {
+	    do_unaligned_row(blt, closure, b, tx, y1, 1,
+			     256 - _cairo_fixed_fractional_part (b->p1.y));
+	    y1++;
+	}
+
+	if (y2 > y1)
+	    do_unaligned_row(blt, closure, b, tx, y1, y2-y1, 256);
+
+	if (! _cairo_fixed_is_integer (b->p2.y))
+	    do_unaligned_row(blt, closure, b, tx, y2, 1,
+			     _cairo_fixed_fractional_part (b->p2.y));
+    } else
+	do_unaligned_row(blt, closure, b, tx, y1, 1,
+			 b->p2.y - b->p1.y);
+}
+
+struct blt_in {
+    const cairo_mask_compositor_t *compositor;
+    cairo_surface_t *dst;
+};
+
+static void blt_in(void *closure,
+		   int16_t x, int16_t y,
+		   int16_t w, int16_t h,
+		   uint16_t coverage)
+{
+    struct blt_in *info = closure;
+    cairo_color_t color;
+    cairo_rectangle_int_t rect;
+
+    if (coverage == 0xffff)
+	return;
+
+    rect.x = x;
+    rect.y = y;
+    rect.width  = w;
+    rect.height = h;
+
+    _cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double) 0xffff);
+    info->compositor->fill_rectangles (info->dst, CAIRO_OPERATOR_IN,
+				       &color, &rect, 1);
+}
+
+static cairo_surface_t *
+create_composite_mask (const cairo_mask_compositor_t *compositor,
+		       cairo_surface_t		*dst,
+		       void			*draw_closure,
+		       draw_func_t		 draw_func,
+		       draw_func_t		 mask_func,
+		       const cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *surface;
+    cairo_int_status_t status;
+    struct blt_in info;
+    int i;
+
+    surface = _cairo_surface_create_scratch (dst, CAIRO_CONTENT_ALPHA,
+					     extents->bounded.width,
+					     extents->bounded.height,
+					     NULL);
+    if (unlikely (surface->status))
+	return surface;
+
+    status = compositor->acquire (surface);
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	return _cairo_int_surface_create_in_error (status);
+    }
+
+    if (!surface->is_clear) {
+	cairo_rectangle_int_t rect;
+
+	rect.x = rect.y = 0;
+	rect.width = extents->bounded.width;
+	rect.height = extents->bounded.height;
+
+	status = compositor->fill_rectangles (surface, CAIRO_OPERATOR_CLEAR,
+					      CAIRO_COLOR_TRANSPARENT,
+					      &rect, 1);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    if (mask_func) {
+	status = mask_func (compositor, surface, draw_closure,
+			    CAIRO_OPERATOR_SOURCE, NULL, NULL,
+			    extents->bounded.x, extents->bounded.y,
+			    &extents->bounded, extents->clip);
+	if (likely (status != CAIRO_INT_STATUS_UNSUPPORTED))
+	    goto out;
+    }
+
+    /* Is it worth setting the clip region here? */
+    status = draw_func (compositor, surface, draw_closure,
+			CAIRO_OPERATOR_ADD, NULL, NULL,
+			extents->bounded.x, extents->bounded.y,
+			&extents->bounded, NULL);
+    if (unlikely (status))
+	goto error;
+
+    info.compositor = compositor;
+    info.dst = surface;
+    for (i = 0; i < extents->clip->num_boxes; i++) {
+	cairo_box_t *b = &extents->clip->boxes[i];
+
+	if (! _cairo_fixed_is_integer (b->p1.x) ||
+	    ! _cairo_fixed_is_integer (b->p1.y) ||
+	    ! _cairo_fixed_is_integer (b->p2.x) ||
+	    ! _cairo_fixed_is_integer (b->p2.y))
+	{
+	    do_unaligned_box(blt_in, &info, b,
+			     extents->bounded.x,
+			     extents->bounded.y);
+	}
+    }
+
+    if (extents->clip->path != NULL) {
+	status = _cairo_clip_combine_with_surface (extents->clip, surface,
+						   extents->bounded.x,
+						   extents->bounded.y);
+	if (unlikely (status))
+	    goto error;
+    }
+
+out:
+    compositor->release (surface);
+    surface->is_clear = FALSE;
+    return surface;
+
+error:
+    compositor->release (surface);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_int_surface_create_in_error (status);
+    }
+    return surface;
+}
+
+/* Handles compositing with a clip surface when the operator allows
+ * us to combine the clip with the mask
+ */
+static cairo_status_t
+clip_and_composite_with_mask (const cairo_mask_compositor_t *compositor,
+			      void			*draw_closure,
+			      draw_func_t		 draw_func,
+			      draw_func_t		 mask_func,
+			      cairo_operator_t		 op,
+			      cairo_pattern_t		*pattern,
+			      const cairo_composite_rectangles_t*extents)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_surface_t *mask, *src;
+    int src_x, src_y;
+
+    mask = create_composite_mask (compositor, dst, draw_closure,
+				  draw_func, mask_func,
+				  extents);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    if (pattern != NULL || dst->content != CAIRO_CONTENT_ALPHA) {
+	src = compositor->pattern_to_surface (dst,
+					      &extents->source_pattern.base,
+					      FALSE,
+					      &extents->bounded,
+					      &extents->source_sample_area,
+					      &src_x, &src_y);
+	if (unlikely (src->status)) {
+	    cairo_surface_destroy (mask);
+	    return src->status;
+	}
+
+	compositor->composite (dst, op, src, mask,
+			       extents->bounded.x + src_x,
+			       extents->bounded.y + src_y,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+
+	cairo_surface_destroy (src);
+    } else {
+	compositor->composite (dst, op, mask, NULL,
+			       0, 0,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    }
+    cairo_surface_destroy (mask);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+get_clip_source (const cairo_mask_compositor_t *compositor,
+		 cairo_clip_t *clip,
+		 cairo_surface_t *dst,
+		 const cairo_rectangle_int_t *bounds,
+		 int *out_x, int *out_y)
+{
+    cairo_surface_pattern_t pattern;
+    cairo_rectangle_int_t r;
+    cairo_surface_t *surface;
+
+    surface = _cairo_clip_get_image (clip, dst, bounds);
+    if (unlikely (surface->status))
+	return surface;
+
+    _cairo_pattern_init_for_surface (&pattern, surface);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    cairo_surface_destroy (surface);
+
+    r.x = r.y = 0;
+    r.width  = bounds->width;
+    r.height = bounds->height;
+
+    surface = compositor->pattern_to_surface (dst, &pattern.base, TRUE,
+					      &r, &r, out_x, out_y);
+    _cairo_pattern_fini (&pattern.base);
+
+    *out_x += -bounds->x;
+    *out_y += -bounds->y;
+    return surface;
+}
+
+/* Handles compositing with a clip surface when we have to do the operation
+ * in two pieces and combine them together.
+ */
+static cairo_status_t
+clip_and_composite_combine (const cairo_mask_compositor_t *compositor,
+			    void			*draw_closure,
+			    draw_func_t		 draw_func,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*pattern,
+			    const cairo_composite_rectangles_t*extents)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_surface_t *tmp, *clip;
+    cairo_status_t status;
+    int clip_x, clip_y;
+
+    tmp = _cairo_surface_create_scratch (dst, dst->content,
+					 extents->bounded.width,
+					 extents->bounded.height,
+					 NULL);
+    if (unlikely (tmp->status))
+	return tmp->status;
+
+    compositor->composite (tmp, CAIRO_OPERATOR_SOURCE, dst, NULL,
+			   extents->bounded.x,      extents->bounded.y,
+			   0, 0,
+			   0, 0,
+			   extents->bounded.width,  extents->bounded.height);
+
+    status = draw_func (compositor, tmp, draw_closure, op,
+			pattern, &extents->source_sample_area,
+			extents->bounded.x, extents->bounded.y,
+			&extents->bounded, NULL);
+    if (unlikely (status))
+	goto cleanup;
+
+    clip = get_clip_source (compositor,
+			    extents->clip, dst, &extents->bounded,
+			    &clip_x, &clip_y);
+    if (unlikely ((status = clip->status)))
+	goto cleanup;
+
+    if (dst->is_clear) {
+	compositor->composite (dst, CAIRO_OPERATOR_SOURCE, tmp, clip,
+			       0, 0,
+			       clip_x, clip_y,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    } else {
+	/* Punch the clip out of the destination */
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, clip, NULL,
+			       clip_x, clip_y,
+			       0, 0,
+			       extents->bounded.x,     extents->bounded.y,
+			       extents->bounded.width, extents->bounded.height);
+
+	/* Now add the two results together */
+	compositor->composite (dst, CAIRO_OPERATOR_ADD, tmp, clip,
+			       0, 0,
+			       clip_x, clip_y,
+			       extents->bounded.x,     extents->bounded.y,
+			       extents->bounded.width, extents->bounded.height);
+    }
+    cairo_surface_destroy (clip);
+
+cleanup:
+    cairo_surface_destroy (tmp);
+    return status;
+}
+
+/* Handles compositing for %CAIRO_OPERATOR_SOURCE, which is special; it's
+ * defined as (src IN mask IN clip) ADD (dst OUT (mask IN clip))
+ */
+static cairo_status_t
+clip_and_composite_source (const cairo_mask_compositor_t	*compositor,
+			   void				*draw_closure,
+			   draw_func_t			 draw_func,
+			   draw_func_t			 mask_func,
+			   cairo_pattern_t		*pattern,
+			   const cairo_composite_rectangles_t	*extents)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_surface_t *mask, *src;
+    int src_x, src_y;
+
+    /* Create a surface that is mask IN clip */
+    mask = create_composite_mask (compositor, dst, draw_closure,
+				  draw_func, mask_func,
+				  extents);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    src = compositor->pattern_to_surface (dst,
+					  pattern,
+					  FALSE,
+					  &extents->bounded,
+					  &extents->source_sample_area,
+					  &src_x, &src_y);
+    if (unlikely (src->status)) {
+	cairo_surface_destroy (mask);
+	return src->status;
+    }
+
+    if (dst->is_clear) {
+	compositor->composite (dst, CAIRO_OPERATOR_SOURCE, src, mask,
+			       extents->bounded.x + src_x, extents->bounded.y + src_y,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    } else {
+	/* Compute dest' = dest OUT (mask IN clip) */
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       0, 0, 0, 0,
+			       extents->bounded.x,     extents->bounded.y,
+			       extents->bounded.width, extents->bounded.height);
+
+	/* Now compute (src IN (mask IN clip)) ADD dest' */
+	compositor->composite (dst, CAIRO_OPERATOR_ADD, src, mask,
+			       extents->bounded.x + src_x, extents->bounded.y + src_y,
+			       0, 0,
+			       extents->bounded.x,     extents->bounded.y,
+			       extents->bounded.width, extents->bounded.height);
+    }
+
+    cairo_surface_destroy (src);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+can_reduce_alpha_op (cairo_operator_t op)
+{
+    int iop = op;
+    switch (iop) {
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_ADD:
+	return TRUE;
+    default:
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+reduce_alpha_op (cairo_surface_t *dst,
+		 cairo_operator_t op,
+		 const cairo_pattern_t *pattern)
+{
+    return dst->is_clear &&
+	   dst->content == CAIRO_CONTENT_ALPHA &&
+	   _cairo_pattern_is_opaque_solid (pattern) &&
+	   can_reduce_alpha_op (op);
+}
+
+static cairo_status_t
+fixup_unbounded (const cairo_mask_compositor_t *compositor,
+		 cairo_surface_t *dst,
+		 const cairo_composite_rectangles_t *extents)
+{
+    cairo_rectangle_int_t rects[4];
+    int n;
+
+    if (extents->bounded.width  == extents->unbounded.width &&
+	extents->bounded.height == extents->unbounded.height)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    n = 0;
+    if (extents->bounded.width == 0 || extents->bounded.height == 0) {
+	rects[n].x = extents->unbounded.x;
+	rects[n].width = extents->unbounded.width;
+	rects[n].y = extents->unbounded.y;
+	rects[n].height = extents->unbounded.height;
+	n++;
+    } else {
+	/* top */
+	if (extents->bounded.y != extents->unbounded.y) {
+	    rects[n].x = extents->unbounded.x;
+	    rects[n].width = extents->unbounded.width;
+	    rects[n].y = extents->unbounded.y;
+	    rects[n].height = extents->bounded.y - extents->unbounded.y;
+	    n++;
+	}
+	/* left */
+	if (extents->bounded.x != extents->unbounded.x) {
+	    rects[n].x = extents->unbounded.x;
+	    rects[n].width = extents->bounded.x - extents->unbounded.x;
+	    rects[n].y = extents->bounded.y;
+	    rects[n].height = extents->bounded.height;
+	    n++;
+	}
+	/* right */
+	if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+	    rects[n].x = extents->bounded.x + extents->bounded.width;
+	    rects[n].width = extents->unbounded.x + extents->unbounded.width - rects[n].x;
+	    rects[n].y = extents->bounded.y;
+	    rects[n].height = extents->bounded.height;
+	    n++;
+	}
+	/* bottom */
+	if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+	    rects[n].x = extents->unbounded.x;
+	    rects[n].width = extents->unbounded.width;
+	    rects[n].y = extents->bounded.y + extents->bounded.height;
+	    rects[n].height = extents->unbounded.y + extents->unbounded.height - rects[n].y;
+	    n++;
+	}
+    }
+
+    return compositor->fill_rectangles (dst, CAIRO_OPERATOR_CLEAR,
+					CAIRO_COLOR_TRANSPARENT,
+					rects, n);
+}
+
+static cairo_status_t
+fixup_unbounded_with_mask (const cairo_mask_compositor_t *compositor,
+			   cairo_surface_t *dst,
+			   const cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *mask;
+    int mask_x, mask_y;
+
+    mask = get_clip_source (compositor,
+			    extents->clip, dst, &extents->unbounded,
+			    &mask_x, &mask_y);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    /* top */
+    if (extents->bounded.y != extents->unbounded.y) {
+	int x = extents->unbounded.x;
+	int y = extents->unbounded.y;
+	int width = extents->unbounded.width;
+	int height = extents->bounded.y - y;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       x + mask_x, y + mask_y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    /* left */
+    if (extents->bounded.x != extents->unbounded.x) {
+	int x = extents->unbounded.x;
+	int y = extents->bounded.y;
+	int width = extents->bounded.x - x;
+	int height = extents->bounded.height;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       x + mask_x, y + mask_y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    /* right */
+    if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+	int x = extents->bounded.x + extents->bounded.width;
+	int y = extents->bounded.y;
+	int width = extents->unbounded.x + extents->unbounded.width - x;
+	int height = extents->bounded.height;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       x + mask_x, y + mask_y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    /* bottom */
+    if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+	int x = extents->unbounded.x;
+	int y = extents->bounded.y + extents->bounded.height;
+	int width = extents->unbounded.width;
+	int height = extents->unbounded.y + extents->unbounded.height - y;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       x + mask_x, y + mask_y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    cairo_surface_destroy (mask);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+fixup_unbounded_boxes (const cairo_mask_compositor_t *compositor,
+		       const cairo_composite_rectangles_t *extents,
+		       cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_boxes_t clear;
+    cairo_region_t *clip_region;
+    cairo_box_t box;
+    cairo_status_t status;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    assert (boxes->is_pixel_aligned);
+
+    clip_region = NULL;
+    if (_cairo_clip_is_region (extents->clip) &&
+	(clip_region = _cairo_clip_get_region (extents->clip)) &&
+	cairo_region_contains_rectangle (clip_region,
+					 &extents->bounded) == CAIRO_REGION_OVERLAP_IN)
+	clip_region = NULL;
+
+
+    if (boxes->num_boxes <= 1 && clip_region == NULL)
+	return fixup_unbounded (compositor, dst, extents);
+
+    _cairo_boxes_init (&clear);
+
+    box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+    box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
+    box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
+    box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
+
+    if (clip_region == NULL) {
+	cairo_boxes_t tmp;
+
+	_cairo_boxes_init (&tmp);
+
+	status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	tmp.chunks.next = &boxes->chunks;
+	tmp.num_boxes += boxes->num_boxes;
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+
+	tmp.chunks.next = NULL;
+    } else {
+	pixman_box32_t *pbox;
+
+	pbox = pixman_region32_rectangles (&clip_region->rgn, &i);
+	_cairo_boxes_limit (&clear, (cairo_box_t *) pbox, i);
+
+	status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		status = _cairo_boxes_add (&clear,
+					   CAIRO_ANTIALIAS_DEFAULT,
+					   &chunk->base[i]);
+		if (unlikely (status)) {
+		    _cairo_boxes_fini (&clear);
+		    return status;
+		}
+	    }
+	}
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&clear,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+    }
+
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status = compositor->fill_boxes (dst,
+					 CAIRO_OPERATOR_CLEAR,
+					 CAIRO_COLOR_TRANSPARENT,
+					 &clear);
+    }
+
+    _cairo_boxes_fini (&clear);
+
+    return status;
+}
+
+enum {
+    NEED_CLIP_REGION = 0x1,
+    NEED_CLIP_SURFACE = 0x2,
+    FORCE_CLIP_REGION = 0x4,
+};
+
+static cairo_bool_t
+need_bounded_clip (cairo_composite_rectangles_t *extents)
+{
+    unsigned int flags = NEED_CLIP_REGION;
+    if (! _cairo_clip_is_region (extents->clip))
+	flags |= NEED_CLIP_SURFACE;
+    return flags;
+}
+
+static cairo_bool_t
+need_unbounded_clip (cairo_composite_rectangles_t *extents)
+{
+    unsigned int flags = 0;
+    if (! extents->is_bounded) {
+	flags |= NEED_CLIP_REGION;
+	if (! _cairo_clip_is_region (extents->clip))
+	    flags |= NEED_CLIP_SURFACE;
+    }
+    if (extents->clip->path != NULL)
+	flags |= NEED_CLIP_SURFACE;
+    return flags;
+}
+
+static cairo_status_t
+clip_and_composite (const cairo_mask_compositor_t *compositor,
+		    draw_func_t			 draw_func,
+		    draw_func_t			 mask_func,
+		    void			*draw_closure,
+		    cairo_composite_rectangles_t*extents,
+		    unsigned int need_clip)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_operator_t op = extents->op;
+    cairo_pattern_t *src = &extents->source_pattern.base;
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status;
+
+    compositor->acquire (dst);
+
+    if (need_clip & NEED_CLIP_REGION) {
+	clip_region = _cairo_clip_get_region (extents->clip);
+	if ((need_clip & FORCE_CLIP_REGION) == 0 &&
+	    _cairo_composite_rectangles_can_reduce_clip (extents,
+							 extents->clip))
+	    clip_region = NULL;
+	if (clip_region != NULL) {
+	    status = compositor->set_clip_region (dst, clip_region);
+	    if (unlikely (status)) {
+		compositor->release (dst);
+		return status;
+	    }
+	}
+    }
+
+    if (reduce_alpha_op (dst, op, &extents->source_pattern.base)) {
+	op = CAIRO_OPERATOR_ADD;
+	src = NULL;
+    }
+
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	status = clip_and_composite_source (compositor,
+					    draw_closure, draw_func, mask_func,
+					    src, extents);
+    } else {
+	if (op == CAIRO_OPERATOR_CLEAR) {
+	    op = CAIRO_OPERATOR_DEST_OUT;
+	    src = NULL;
+	}
+
+	if (need_clip & NEED_CLIP_SURFACE) {
+	    if (extents->is_bounded) {
+		status = clip_and_composite_with_mask (compositor,
+						       draw_closure,
+						       draw_func,
+						       mask_func,
+						       op, src, extents);
+	    } else {
+		status = clip_and_composite_combine (compositor,
+						     draw_closure,
+						     draw_func,
+						     op, src, extents);
+	    }
+	} else {
+	    status = draw_func (compositor,
+				dst, draw_closure,
+				op, src, &extents->source_sample_area,
+				0, 0,
+				&extents->bounded,
+				extents->clip);
+	}
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) {
+	if (need_clip & NEED_CLIP_SURFACE)
+	    status = fixup_unbounded_with_mask (compositor, dst, extents);
+	else
+	    status = fixup_unbounded (compositor, dst, extents);
+    }
+
+    if (clip_region)
+	compositor->set_clip_region (dst, NULL);
+
+    compositor->release (dst);
+
+    return status;
+}
+
+static cairo_int_status_t
+trim_extents_to_boxes (cairo_composite_rectangles_t *extents,
+		       cairo_boxes_t *boxes)
+{
+    cairo_box_t box;
+
+    _cairo_boxes_extents (boxes, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_status_t
+upload_boxes (const cairo_mask_compositor_t *compositor,
+	      cairo_composite_rectangles_t *extents,
+	      cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    const cairo_pattern_t *source = &extents->source_pattern.base;
+    cairo_surface_t *src;
+    cairo_rectangle_int_t limit;
+    cairo_int_status_t status;
+    int tx, ty;
+
+    src = _cairo_pattern_get_source ((cairo_surface_pattern_t *)source, &limit);
+    if (!(src->type == CAIRO_SURFACE_TYPE_IMAGE || src->type == dst->type))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix, &tx, &ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Check that the data is entirely within the image */
+    if (extents->bounded.x + tx < limit.x || extents->bounded.y + ty < limit.y)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (extents->bounded.x + extents->bounded.width  + tx > limit.x + limit.width ||
+	extents->bounded.y + extents->bounded.height + ty > limit.y + limit.height)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    tx += limit.x;
+    ty += limit.y;
+
+    if (src->type == CAIRO_SURFACE_TYPE_IMAGE)
+	status = compositor->draw_image_boxes (dst,
+					       (cairo_image_surface_t *)src,
+					       boxes, tx, ty);
+    else
+	status = compositor->copy_boxes (dst, src, boxes, &extents->bounded,
+					 tx, ty);
+
+    return status;
+}
+
+static cairo_status_t
+composite_boxes (const cairo_mask_compositor_t *compositor,
+		 const cairo_composite_rectangles_t *extents,
+		 cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_operator_t op = extents->op;
+    const cairo_pattern_t *source = &extents->source_pattern.base;
+    cairo_bool_t need_clip_mask = extents->clip->path != NULL;
+    cairo_status_t status;
+
+    if (need_clip_mask &&
+	(! extents->is_bounded || op == CAIRO_OPERATOR_SOURCE))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = compositor->acquire (dst);
+    if (unlikely (status))
+	return status;
+
+    if (! need_clip_mask && source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_color_t *color;
+
+	color = &((cairo_solid_pattern_t *) source)->color;
+	status = compositor->fill_boxes (dst, op, color, boxes);
+    } else {
+	cairo_surface_t *src, *mask = NULL;
+	int src_x, src_y;
+	int mask_x = 0, mask_y = 0;
+
+	if (need_clip_mask) {
+	    mask = get_clip_source (compositor,
+				    extents->clip, dst, &extents->bounded,
+				    &mask_x, &mask_y);
+	    if (unlikely (mask->status))
+		return mask->status;
+
+	    if (op == CAIRO_OPERATOR_CLEAR) {
+		source = NULL;
+		op = CAIRO_OPERATOR_DEST_OUT;
+	    }
+	}
+
+	if (source || mask == NULL) {
+	    src = compositor->pattern_to_surface (dst, source, FALSE,
+						  &extents->bounded,
+						  &extents->source_sample_area,
+						  &src_x, &src_y);
+	} else {
+	    src = mask;
+	    src_x = mask_x;
+	    src_y = mask_y;
+	    mask = NULL;
+	}
+
+	status = compositor->composite_boxes (dst, op, src, mask,
+					      src_x, src_y,
+					      mask_x, mask_y,
+					      0, 0,
+					      boxes, &extents->bounded);
+
+	cairo_surface_destroy (src);
+	cairo_surface_destroy (mask);
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded)
+	status = fixup_unbounded_boxes (compositor, extents, boxes);
+
+    compositor->release (dst);
+
+    return status;
+}
+
+static cairo_status_t
+clip_and_composite_boxes (const cairo_mask_compositor_t *compositor,
+			  cairo_composite_rectangles_t *extents,
+			  cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_int_status_t status;
+
+    if (boxes->num_boxes == 0) {
+	if (extents->is_bounded)
+	    return CAIRO_STATUS_SUCCESS;
+
+	return fixup_unbounded_boxes (compositor, extents, boxes);
+    }
+
+    if (! boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = trim_extents_to_boxes (extents, boxes);
+    if (unlikely (status))
+	return status;
+
+    if (extents->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE &&
+	extents->clip->path == NULL &&
+	(extents->op == CAIRO_OPERATOR_SOURCE ||
+	 (dst->is_clear && (extents->op == CAIRO_OPERATOR_OVER ||
+			    extents->op == CAIRO_OPERATOR_ADD))))
+    {
+	status = upload_boxes (compositor, extents, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    return composite_boxes (compositor, extents, boxes);
+}
+
+/* high-level compositor interface */
+
+static cairo_int_status_t
+_cairo_mask_compositor_paint (const cairo_compositor_t *_compositor,
+			      cairo_composite_rectangles_t *extents)
+{
+    cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
+    cairo_boxes_t boxes;
+    cairo_int_status_t status;
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    _cairo_clip_steal_boxes (extents->clip, &boxes);
+    status = clip_and_composite_boxes (compositor, extents, &boxes);
+    _cairo_clip_unsteal_boxes (extents->clip, &boxes);
+
+    return status;
+}
+
+struct composite_opacity_info {
+    const cairo_mask_compositor_t *compositor;
+    uint8_t op;
+    cairo_surface_t *dst;
+    cairo_surface_t *src;
+    int src_x, src_y;
+    double opacity;
+};
+
+static void composite_opacity(void *closure,
+			      int16_t x, int16_t y,
+			      int16_t w, int16_t h,
+			      uint16_t coverage)
+{
+    struct composite_opacity_info *info = closure;
+    const cairo_mask_compositor_t *compositor = info->compositor;
+    cairo_surface_t *mask;
+    int mask_x, mask_y;
+    cairo_color_t color;
+    cairo_solid_pattern_t solid;
+
+    _cairo_color_init_rgba (&color, 0, 0, 0, info->opacity * coverage);
+    _cairo_pattern_init_solid (&solid, &color);
+    mask = compositor->pattern_to_surface (info->dst, &solid.base, TRUE,
+					   &_cairo_unbounded_rectangle,
+					   &_cairo_unbounded_rectangle,
+					   &mask_x, &mask_y);
+    if (likely (mask->status == CAIRO_STATUS_SUCCESS)) {
+	if (info->src) {
+	    compositor->composite (info->dst, info->op, info->src, mask,
+				   x + info->src_x,  y + info->src_y,
+				   mask_x,           mask_y,
+				   x,                y,
+				   w,                h);
+	} else {
+	    compositor->composite (info->dst, info->op, mask, NULL,
+				   mask_x,            mask_y,
+				   0,                 0,
+				   x,                 y,
+				   w,                 h);
+	}
+    }
+
+    cairo_surface_destroy (mask);
+}
+
+static cairo_int_status_t
+composite_opacity_boxes (const cairo_mask_compositor_t *compositor,
+			 cairo_surface_t		*dst,
+			 void				*closure,
+			 cairo_operator_t		 op,
+			 const cairo_pattern_t		*src_pattern,
+			 const cairo_rectangle_int_t	*src_sample,
+			 int				 dst_x,
+			 int				 dst_y,
+			 const cairo_rectangle_int_t	*extents,
+			 cairo_clip_t			*clip)
+{
+    const cairo_solid_pattern_t *mask_pattern = closure;
+    struct composite_opacity_info info;
+    int i;
+
+    assert (clip);
+
+    info.compositor = compositor;
+    info.op = op;
+    info.dst = dst;
+
+    if (src_pattern != NULL) {
+	info.src = compositor->pattern_to_surface (dst, src_pattern, FALSE,
+						   extents, src_sample,
+						   &info.src_x, &info.src_y);
+	if (unlikely (info.src->status))
+	    return info.src->status;
+    } else
+	info.src = NULL;
+
+    info.opacity = mask_pattern->color.alpha / (double) 0xffff;
+
+    /* XXX for lots of boxes create a clip region for the fully opaque areas */
+    for (i = 0; i < clip->num_boxes; i++)
+	do_unaligned_box(composite_opacity, &info,
+			 &clip->boxes[i], dst_x, dst_y);
+    cairo_surface_destroy (info.src);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct composite_box_info {
+    const cairo_mask_compositor_t *compositor;
+    cairo_surface_t *dst;
+    cairo_surface_t *src;
+    int src_x, src_y;
+    uint8_t op;
+};
+
+static void composite_box(void *closure,
+			  int16_t x, int16_t y,
+			  int16_t w, int16_t h,
+			  uint16_t coverage)
+{
+    struct composite_box_info *info = closure;
+    const cairo_mask_compositor_t *compositor = info->compositor;
+
+    if (! CAIRO_ALPHA_SHORT_IS_OPAQUE (coverage)) {
+	cairo_surface_t *mask;
+	cairo_color_t color;
+	cairo_solid_pattern_t solid;
+	int mask_x, mask_y;
+
+	_cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double)0xffff);
+	_cairo_pattern_init_solid (&solid, &color);
+
+	mask = compositor->pattern_to_surface (info->dst, &solid.base, FALSE,
+					       &_cairo_unbounded_rectangle,
+					       &_cairo_unbounded_rectangle,
+					       &mask_x, &mask_y);
+
+	if (likely (mask->status == CAIRO_STATUS_SUCCESS)) {
+	    compositor->composite (info->dst, info->op, info->src, mask,
+				   x + info->src_x,  y + info->src_y,
+				   mask_x,           mask_y,
+				   x,                y,
+				   w,                h);
+	}
+
+	cairo_surface_destroy (mask);
+    } else {
+	compositor->composite (info->dst, info->op, info->src, NULL,
+			       x + info->src_x,  y + info->src_y,
+			       0,                0,
+			       x,                y,
+			       w,                h);
+    }
+}
+
+static cairo_int_status_t
+composite_mask_clip_boxes (const cairo_mask_compositor_t *compositor,
+			   cairo_surface_t		*dst,
+			   void				*closure,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*src_pattern,
+			   const cairo_rectangle_int_t	*src_sample,
+			   int				 dst_x,
+			   int				 dst_y,
+			   const cairo_rectangle_int_t	*extents,
+			   cairo_clip_t			*clip)
+{
+    cairo_composite_rectangles_t *composite = closure;
+    struct composite_box_info info;
+    int i;
+
+    assert (src_pattern == NULL);
+    assert (op == CAIRO_OPERATOR_SOURCE);
+
+    info.compositor = compositor;
+    info.op = CAIRO_OPERATOR_SOURCE;
+    info.dst = dst;
+    info.src = compositor->pattern_to_surface (dst,
+					       &composite->mask_pattern.base,
+					       FALSE, extents,
+					       &composite->mask_sample_area,
+					       &info.src_x, &info.src_y);
+    if (unlikely (info.src->status))
+	return info.src->status;
+
+    info.src_x += dst_x;
+    info.src_y += dst_y;
+
+    for (i = 0; i < clip->num_boxes; i++)
+	do_unaligned_box(composite_box, &info, &clip->boxes[i], dst_x, dst_y);
+
+    cairo_surface_destroy (info.src);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_mask (const cairo_mask_compositor_t *compositor,
+		cairo_surface_t			*dst,
+		void				*closure,
+		cairo_operator_t		 op,
+		const cairo_pattern_t		*src_pattern,
+		const cairo_rectangle_int_t	*src_sample,
+		int				 dst_x,
+		int				 dst_y,
+		const cairo_rectangle_int_t	*extents,
+		cairo_clip_t			*clip)
+{
+    cairo_composite_rectangles_t *composite = closure;
+    cairo_surface_t *src, *mask;
+    int src_x, src_y;
+    int mask_x, mask_y;
+
+    if (src_pattern != NULL) {
+	src = compositor->pattern_to_surface (dst, src_pattern, FALSE,
+					      extents, src_sample,
+					      &src_x, &src_y);
+	if (unlikely (src->status))
+	    return src->status;
+
+	mask = compositor->pattern_to_surface (dst, &composite->mask_pattern.base, TRUE,
+					       extents, &composite->mask_sample_area,
+					       &mask_x, &mask_y);
+	if (unlikely (mask->status)) {
+	    cairo_surface_destroy (src);
+	    return mask->status;
+	}
+
+	compositor->composite (dst, op, src, mask,
+			       extents->x + src_x,  extents->y + src_y,
+			       extents->x + mask_x, extents->y + mask_y,
+			       extents->x - dst_x,  extents->y - dst_y,
+			       extents->width,      extents->height);
+
+	cairo_surface_destroy (mask);
+	cairo_surface_destroy (src);
+    } else {
+	src = compositor->pattern_to_surface (dst, &composite->mask_pattern.base, FALSE,
+					      extents, &composite->mask_sample_area,
+					      &src_x, &src_y);
+	if (unlikely (src->status))
+	    return src->status;
+
+	compositor->composite (dst, op, src, NULL,
+			       extents->x + src_x,  extents->y + src_y,
+			       0, 0,
+			       extents->x - dst_x,  extents->y - dst_y,
+			       extents->width,      extents->height);
+
+	cairo_surface_destroy (src);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_mask_compositor_mask (const cairo_compositor_t *_compositor,
+			     cairo_composite_rectangles_t *extents)
+{
+    const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    if (extents->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID &&
+	extents->clip->path == NULL &&
+	_cairo_clip_is_region (extents->clip)) {
+	status = clip_and_composite (compositor,
+				     composite_opacity_boxes,
+				     composite_opacity_boxes,
+				     &extents->mask_pattern.solid,
+				     extents, need_unbounded_clip (extents));
+    } else {
+	status = clip_and_composite (compositor,
+				     composite_mask,
+				     extents->clip->path == NULL ? composite_mask_clip_boxes : NULL,
+				     extents,
+				     extents, need_bounded_clip (extents));
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_mask_compositor_stroke (const cairo_compositor_t *_compositor,
+			       cairo_composite_rectangles_t *extents,
+			       const cairo_path_fixed_t	*path,
+			       const cairo_stroke_style_t	*style,
+			       const cairo_matrix_t	*ctm,
+			       const cairo_matrix_t	*ctm_inverse,
+			       double		 tolerance,
+			       cairo_antialias_t	 antialias)
+{
+    const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
+    cairo_surface_t *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, extents->clip);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								style,
+								ctm,
+								antialias,
+								&boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	mask = cairo_surface_create_similar_image (extents->surface,
+						   CAIRO_FORMAT_A8,
+						   extents->bounded.width,
+						   extents->bounded.height);
+	if (unlikely (mask->status))
+	    return mask->status;
+
+	status = _cairo_surface_offset_stroke (mask,
+					       extents->bounded.x,
+					       extents->bounded.y,
+					       CAIRO_OPERATOR_ADD,
+					       &_cairo_pattern_white.base,
+					       path, style, ctm, ctm_inverse,
+					       tolerance, antialias,
+					       extents->clip);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (mask);
+	    return status;
+	}
+
+	_cairo_pattern_init_for_surface (&pattern, mask);
+	cairo_surface_destroy (mask);
+
+	cairo_matrix_init_translate (&pattern.base.matrix,
+				     -extents->bounded.x,
+				     -extents->bounded.y);
+	pattern.base.filter = CAIRO_FILTER_NEAREST;
+	pattern.base.extend = CAIRO_EXTEND_NONE;
+	status = _cairo_surface_mask (extents->surface,
+				      extents->op,
+				      &extents->source_pattern.base,
+				      &pattern.base,
+				      extents->clip);
+	_cairo_pattern_fini (&pattern.base);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_mask_compositor_fill (const cairo_compositor_t *_compositor,
+			     cairo_composite_rectangles_t *extents,
+			     const cairo_path_fixed_t	*path,
+			     cairo_fill_rule_t	 fill_rule,
+			     double			 tolerance,
+			     cairo_antialias_t	 antialias)
+{
+    const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
+    cairo_surface_t *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, extents->clip);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      antialias,
+							      &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	mask = cairo_surface_create_similar_image (extents->surface,
+						   CAIRO_FORMAT_A8,
+						   extents->bounded.width,
+						   extents->bounded.height);
+	if (unlikely (mask->status))
+	    return mask->status;
+
+	status = _cairo_surface_offset_fill (mask,
+					     extents->bounded.x,
+					     extents->bounded.y,
+					     CAIRO_OPERATOR_ADD,
+					     &_cairo_pattern_white.base,
+					     path, fill_rule, tolerance, antialias,
+					     extents->clip);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (mask);
+	    return status;
+	}
+
+	_cairo_pattern_init_for_surface (&pattern, mask);
+	cairo_surface_destroy (mask);
+
+	cairo_matrix_init_translate (&pattern.base.matrix,
+				     -extents->bounded.x,
+				     -extents->bounded.y);
+	pattern.base.filter = CAIRO_FILTER_NEAREST;
+	pattern.base.extend = CAIRO_EXTEND_NONE;
+	status = _cairo_surface_mask (extents->surface,
+				      extents->op,
+				      &extents->source_pattern.base,
+				      &pattern.base,
+				      extents->clip);
+	_cairo_pattern_fini (&pattern.base);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_mask_compositor_glyphs (const cairo_compositor_t *_compositor,
+			       cairo_composite_rectangles_t *extents,
+			       cairo_scaled_font_t	*scaled_font,
+			       cairo_glyph_t		*glyphs,
+			       int			 num_glyphs,
+			       cairo_bool_t		 overlap)
+{
+    const cairo_mask_compositor_t *compositor = (cairo_mask_compositor_t*)_compositor;
+    cairo_surface_t *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_int_status_t status;
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    mask = cairo_surface_create_similar_image (extents->surface,
+					       CAIRO_FORMAT_A8,
+					       extents->bounded.width,
+					       extents->bounded.height);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    status = _cairo_surface_offset_glyphs (mask,
+					   extents->bounded.x,
+					   extents->bounded.y,
+					   CAIRO_OPERATOR_ADD,
+					   &_cairo_pattern_white.base,
+					   scaled_font, glyphs, num_glyphs,
+					   extents->clip);
+    if (unlikely (status)) {
+	cairo_surface_destroy (mask);
+	return status;
+    }
+
+    _cairo_pattern_init_for_surface (&pattern, mask);
+    cairo_surface_destroy (mask);
+
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 -extents->bounded.x,
+				 -extents->bounded.y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    pattern.base.extend = CAIRO_EXTEND_NONE;
+    status = _cairo_surface_mask (extents->surface,
+				  extents->op,
+				  &extents->source_pattern.base,
+				  &pattern.base,
+				  extents->clip);
+    _cairo_pattern_fini (&pattern.base);
+
+    return status;
+}
+
+void
+_cairo_mask_compositor_init (cairo_mask_compositor_t *compositor,
+			     const cairo_compositor_t *delegate)
+{
+    compositor->base.delegate = delegate;
+
+    compositor->base.paint = _cairo_mask_compositor_paint;
+    compositor->base.mask  = _cairo_mask_compositor_mask;
+    compositor->base.fill  = _cairo_mask_compositor_fill;
+    compositor->base.stroke = _cairo_mask_compositor_stroke;
+    compositor->base.glyphs = _cairo_mask_compositor_glyphs;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-matrix.c b/libs/cairo-1.16.0/src/cairo-matrix.c
new file mode 100644
index 0000000..f3cf684
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-matrix.c
@@ -0,0 +1,1206 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+#include <float.h>
+
+#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
+
+/**
+ * SECTION:cairo-matrix
+ * @Title: cairo_matrix_t
+ * @Short_Description: Generic matrix operations
+ * @See_Also: #cairo_t
+ *
+ * #cairo_matrix_t is used throughout cairo to convert between different
+ * coordinate spaces.  A #cairo_matrix_t holds an affine transformation,
+ * such as a scale, rotation, shear, or a combination of these.
+ * The transformation of a point (<literal>x</literal>,<literal>y</literal>)
+ * is given by:
+ *
+ * <programlisting>
+ * x_new = xx * x + xy * y + x0;
+ * y_new = yx * x + yy * y + y0;
+ * </programlisting>
+ *
+ * The current transformation matrix of a #cairo_t, represented as a
+ * #cairo_matrix_t, defines the transformation from user-space
+ * coordinates to device-space coordinates. See cairo_get_matrix() and
+ * cairo_set_matrix().
+ **/
+
+static void
+_cairo_matrix_scalar_multiply (cairo_matrix_t *matrix, double scalar);
+
+static void
+_cairo_matrix_compute_adjoint (cairo_matrix_t *matrix);
+
+/**
+ * cairo_matrix_init_identity:
+ * @matrix: a #cairo_matrix_t
+ *
+ * Modifies @matrix to be an identity transformation.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_init_identity (cairo_matrix_t *matrix)
+{
+    cairo_matrix_init (matrix,
+		       1, 0,
+		       0, 1,
+		       0, 0);
+}
+slim_hidden_def(cairo_matrix_init_identity);
+
+/**
+ * cairo_matrix_init:
+ * @matrix: a #cairo_matrix_t
+ * @xx: xx component of the affine transformation
+ * @yx: yx component of the affine transformation
+ * @xy: xy component of the affine transformation
+ * @yy: yy component of the affine transformation
+ * @x0: X translation component of the affine transformation
+ * @y0: Y translation component of the affine transformation
+ *
+ * Sets @matrix to be the affine transformation given by
+ * @xx, @yx, @xy, @yy, @x0, @y0. The transformation is given
+ * by:
+ * <programlisting>
+ *  x_new = xx * x + xy * y + x0;
+ *  y_new = yx * x + yy * y + y0;
+ * </programlisting>
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_init (cairo_matrix_t *matrix,
+		   double xx, double yx,
+
+		   double xy, double yy,
+		   double x0, double y0)
+{
+    matrix->xx = xx; matrix->yx = yx;
+    matrix->xy = xy; matrix->yy = yy;
+    matrix->x0 = x0; matrix->y0 = y0;
+}
+slim_hidden_def(cairo_matrix_init);
+
+/**
+ * _cairo_matrix_get_affine:
+ * @matrix: a #cairo_matrix_t
+ * @xx: location to store xx component of matrix
+ * @yx: location to store yx component of matrix
+ * @xy: location to store xy component of matrix
+ * @yy: location to store yy component of matrix
+ * @x0: location to store x0 (X-translation component) of matrix, or %NULL
+ * @y0: location to store y0 (Y-translation component) of matrix, or %NULL
+ *
+ * Gets the matrix values for the affine transformation that @matrix represents.
+ * See cairo_matrix_init().
+ *
+ *
+ * This function is a leftover from the old public API, but is still
+ * mildly useful as an internal means for getting at the matrix
+ * members in a positional way. For example, when reassigning to some
+ * external matrix type, or when renaming members to more meaningful
+ * names (such as a,b,c,d,e,f) for particular manipulations.
+ **/
+void
+_cairo_matrix_get_affine (const cairo_matrix_t *matrix,
+			  double *xx, double *yx,
+			  double *xy, double *yy,
+			  double *x0, double *y0)
+{
+    *xx  = matrix->xx;
+    *yx  = matrix->yx;
+
+    *xy  = matrix->xy;
+    *yy  = matrix->yy;
+
+    if (x0)
+	*x0 = matrix->x0;
+    if (y0)
+	*y0 = matrix->y0;
+}
+
+/**
+ * cairo_matrix_init_translate:
+ * @matrix: a #cairo_matrix_t
+ * @tx: amount to translate in the X direction
+ * @ty: amount to translate in the Y direction
+ *
+ * Initializes @matrix to a transformation that translates by @tx and
+ * @ty in the X and Y dimensions, respectively.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_init_translate (cairo_matrix_t *matrix,
+			     double tx, double ty)
+{
+    cairo_matrix_init (matrix,
+		       1, 0,
+		       0, 1,
+		       tx, ty);
+}
+slim_hidden_def(cairo_matrix_init_translate);
+
+/**
+ * cairo_matrix_translate:
+ * @matrix: a #cairo_matrix_t
+ * @tx: amount to translate in the X direction
+ * @ty: amount to translate in the Y direction
+ *
+ * Applies a translation by @tx, @ty to the transformation in
+ * @matrix. The effect of the new transformation is to first translate
+ * the coordinates by @tx and @ty, then apply the original transformation
+ * to the coordinates.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_translate (cairo_matrix_t *matrix, double tx, double ty)
+{
+    cairo_matrix_t tmp;
+
+    cairo_matrix_init_translate (&tmp, tx, ty);
+
+    cairo_matrix_multiply (matrix, &tmp, matrix);
+}
+slim_hidden_def (cairo_matrix_translate);
+
+/**
+ * cairo_matrix_init_scale:
+ * @matrix: a #cairo_matrix_t
+ * @sx: scale factor in the X direction
+ * @sy: scale factor in the Y direction
+ *
+ * Initializes @matrix to a transformation that scales by @sx and @sy
+ * in the X and Y dimensions, respectively.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_init_scale (cairo_matrix_t *matrix,
+			 double sx, double sy)
+{
+    cairo_matrix_init (matrix,
+		       sx,  0,
+		       0, sy,
+		       0, 0);
+}
+slim_hidden_def(cairo_matrix_init_scale);
+
+/**
+ * cairo_matrix_scale:
+ * @matrix: a #cairo_matrix_t
+ * @sx: scale factor in the X direction
+ * @sy: scale factor in the Y direction
+ *
+ * Applies scaling by @sx, @sy to the transformation in @matrix. The
+ * effect of the new transformation is to first scale the coordinates
+ * by @sx and @sy, then apply the original transformation to the coordinates.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_scale (cairo_matrix_t *matrix, double sx, double sy)
+{
+    cairo_matrix_t tmp;
+
+    cairo_matrix_init_scale (&tmp, sx, sy);
+
+    cairo_matrix_multiply (matrix, &tmp, matrix);
+}
+slim_hidden_def(cairo_matrix_scale);
+
+/**
+ * cairo_matrix_init_rotate:
+ * @matrix: a #cairo_matrix_t
+ * @radians: angle of rotation, in radians. The direction of rotation
+ * is defined such that positive angles rotate in the direction from
+ * the positive X axis toward the positive Y axis. With the default
+ * axis orientation of cairo, positive angles rotate in a clockwise
+ * direction.
+ *
+ * Initialized @matrix to a transformation that rotates by @radians.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_init_rotate (cairo_matrix_t *matrix,
+			  double radians)
+{
+    double  s;
+    double  c;
+
+    s = sin (radians);
+    c = cos (radians);
+
+    cairo_matrix_init (matrix,
+		       c, s,
+		       -s, c,
+		       0, 0);
+}
+slim_hidden_def(cairo_matrix_init_rotate);
+
+/**
+ * cairo_matrix_rotate:
+ * @matrix: a #cairo_matrix_t
+ * @radians: angle of rotation, in radians. The direction of rotation
+ * is defined such that positive angles rotate in the direction from
+ * the positive X axis toward the positive Y axis. With the default
+ * axis orientation of cairo, positive angles rotate in a clockwise
+ * direction.
+ *
+ * Applies rotation by @radians to the transformation in
+ * @matrix. The effect of the new transformation is to first rotate the
+ * coordinates by @radians, then apply the original transformation
+ * to the coordinates.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_rotate (cairo_matrix_t *matrix, double radians)
+{
+    cairo_matrix_t tmp;
+
+    cairo_matrix_init_rotate (&tmp, radians);
+
+    cairo_matrix_multiply (matrix, &tmp, matrix);
+}
+
+/**
+ * cairo_matrix_multiply:
+ * @result: a #cairo_matrix_t in which to store the result
+ * @a: a #cairo_matrix_t
+ * @b: a #cairo_matrix_t
+ *
+ * Multiplies the affine transformations in @a and @b together
+ * and stores the result in @result. The effect of the resulting
+ * transformation is to first apply the transformation in @a to the
+ * coordinates and then apply the transformation in @b to the
+ * coordinates.
+ *
+ * It is allowable for @result to be identical to either @a or @b.
+ *
+ * Since: 1.0
+ **/
+/*
+ * XXX: The ordering of the arguments to this function corresponds
+ *      to [row_vector]*A*B. If we want to use column vectors instead,
+ *      then we need to switch the two arguments and fix up all
+ *      uses.
+ */
+void
+cairo_matrix_multiply (cairo_matrix_t *result, const cairo_matrix_t *a, const cairo_matrix_t *b)
+{
+    cairo_matrix_t r;
+
+    r.xx = a->xx * b->xx + a->yx * b->xy;
+    r.yx = a->xx * b->yx + a->yx * b->yy;
+
+    r.xy = a->xy * b->xx + a->yy * b->xy;
+    r.yy = a->xy * b->yx + a->yy * b->yy;
+
+    r.x0 = a->x0 * b->xx + a->y0 * b->xy + b->x0;
+    r.y0 = a->x0 * b->yx + a->y0 * b->yy + b->y0;
+
+    *result = r;
+}
+slim_hidden_def(cairo_matrix_multiply);
+
+void
+_cairo_matrix_multiply (cairo_matrix_t *r,
+			const cairo_matrix_t *a,
+			const cairo_matrix_t *b)
+{
+    r->xx = a->xx * b->xx + a->yx * b->xy;
+    r->yx = a->xx * b->yx + a->yx * b->yy;
+
+    r->xy = a->xy * b->xx + a->yy * b->xy;
+    r->yy = a->xy * b->yx + a->yy * b->yy;
+
+    r->x0 = a->x0 * b->xx + a->y0 * b->xy + b->x0;
+    r->y0 = a->x0 * b->yx + a->y0 * b->yy + b->y0;
+}
+
+/**
+ * cairo_matrix_transform_distance:
+ * @matrix: a #cairo_matrix_t
+ * @dx: X component of a distance vector. An in/out parameter
+ * @dy: Y component of a distance vector. An in/out parameter
+ *
+ * Transforms the distance vector (@dx,@dy) by @matrix. This is
+ * similar to cairo_matrix_transform_point() except that the translation
+ * components of the transformation are ignored. The calculation of
+ * the returned vector is as follows:
+ *
+ * <programlisting>
+ * dx2 = dx1 * a + dy1 * c;
+ * dy2 = dx1 * b + dy1 * d;
+ * </programlisting>
+ *
+ * Affine transformations are position invariant, so the same vector
+ * always transforms to the same vector. If (@x1,@y1) transforms
+ * to (@x2,@y2) then (@x1+@dx1,@y1+@dy1) will transform to
+ * (@x1+@dx2,@y1+@dy2) for all values of @x1 and @x2.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_transform_distance (const cairo_matrix_t *matrix, double *dx, double *dy)
+{
+    double new_x, new_y;
+
+    new_x = (matrix->xx * *dx + matrix->xy * *dy);
+    new_y = (matrix->yx * *dx + matrix->yy * *dy);
+
+    *dx = new_x;
+    *dy = new_y;
+}
+slim_hidden_def(cairo_matrix_transform_distance);
+
+/**
+ * cairo_matrix_transform_point:
+ * @matrix: a #cairo_matrix_t
+ * @x: X position. An in/out parameter
+ * @y: Y position. An in/out parameter
+ *
+ * Transforms the point (@x, @y) by @matrix.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_matrix_transform_point (const cairo_matrix_t *matrix, double *x, double *y)
+{
+    cairo_matrix_transform_distance (matrix, x, y);
+
+    *x += matrix->x0;
+    *y += matrix->y0;
+}
+slim_hidden_def(cairo_matrix_transform_point);
+
+void
+_cairo_matrix_transform_bounding_box (const cairo_matrix_t *matrix,
+				      double *x1, double *y1,
+				      double *x2, double *y2,
+				      cairo_bool_t *is_tight)
+{
+    int i;
+    double quad_x[4], quad_y[4];
+    double min_x, max_x;
+    double min_y, max_y;
+
+    if (matrix->xy == 0. && matrix->yx == 0.) {
+	/* non-rotation/skew matrix, just map the two extreme points */
+
+	if (matrix->xx != 1.) {
+	    quad_x[0] = *x1 * matrix->xx;
+	    quad_x[1] = *x2 * matrix->xx;
+	    if (quad_x[0] < quad_x[1]) {
+		*x1 = quad_x[0];
+		*x2 = quad_x[1];
+	    } else {
+		*x1 = quad_x[1];
+		*x2 = quad_x[0];
+	    }
+	}
+	if (matrix->x0 != 0.) {
+	    *x1 += matrix->x0;
+	    *x2 += matrix->x0;
+	}
+
+	if (matrix->yy != 1.) {
+	    quad_y[0] = *y1 * matrix->yy;
+	    quad_y[1] = *y2 * matrix->yy;
+	    if (quad_y[0] < quad_y[1]) {
+		*y1 = quad_y[0];
+		*y2 = quad_y[1];
+	    } else {
+		*y1 = quad_y[1];
+		*y2 = quad_y[0];
+	    }
+	}
+	if (matrix->y0 != 0.) {
+	    *y1 += matrix->y0;
+	    *y2 += matrix->y0;
+	}
+
+	if (is_tight)
+	    *is_tight = TRUE;
+
+	return;
+    }
+
+    /* general matrix */
+    quad_x[0] = *x1;
+    quad_y[0] = *y1;
+    cairo_matrix_transform_point (matrix, &quad_x[0], &quad_y[0]);
+
+    quad_x[1] = *x2;
+    quad_y[1] = *y1;
+    cairo_matrix_transform_point (matrix, &quad_x[1], &quad_y[1]);
+
+    quad_x[2] = *x1;
+    quad_y[2] = *y2;
+    cairo_matrix_transform_point (matrix, &quad_x[2], &quad_y[2]);
+
+    quad_x[3] = *x2;
+    quad_y[3] = *y2;
+    cairo_matrix_transform_point (matrix, &quad_x[3], &quad_y[3]);
+
+    min_x = max_x = quad_x[0];
+    min_y = max_y = quad_y[0];
+
+    for (i=1; i < 4; i++) {
+	if (quad_x[i] < min_x)
+	    min_x = quad_x[i];
+	if (quad_x[i] > max_x)
+	    max_x = quad_x[i];
+
+	if (quad_y[i] < min_y)
+	    min_y = quad_y[i];
+	if (quad_y[i] > max_y)
+	    max_y = quad_y[i];
+    }
+
+    *x1 = min_x;
+    *y1 = min_y;
+    *x2 = max_x;
+    *y2 = max_y;
+
+    if (is_tight) {
+        /* it's tight if and only if the four corner points form an axis-aligned
+           rectangle.
+           And that's true if and only if we can derive corners 0 and 3 from
+           corners 1 and 2 in one of two straightforward ways...
+           We could use a tolerance here but for now we'll fall back to FALSE in the case
+           of floating point error.
+        */
+        *is_tight =
+            (quad_x[1] == quad_x[0] && quad_y[1] == quad_y[3] &&
+             quad_x[2] == quad_x[3] && quad_y[2] == quad_y[0]) ||
+            (quad_x[1] == quad_x[3] && quad_y[1] == quad_y[0] &&
+             quad_x[2] == quad_x[0] && quad_y[2] == quad_y[3]);
+    }
+}
+
+cairo_private void
+_cairo_matrix_transform_bounding_box_fixed (const cairo_matrix_t *matrix,
+					    cairo_box_t          *bbox,
+					    cairo_bool_t *is_tight)
+{
+    double x1, y1, x2, y2;
+
+    _cairo_box_to_doubles (bbox, &x1, &y1, &x2, &y2);
+    _cairo_matrix_transform_bounding_box (matrix, &x1, &y1, &x2, &y2, is_tight);
+    _cairo_box_from_doubles (bbox, &x1, &y1, &x2, &y2);
+}
+
+static void
+_cairo_matrix_scalar_multiply (cairo_matrix_t *matrix, double scalar)
+{
+    matrix->xx *= scalar;
+    matrix->yx *= scalar;
+
+    matrix->xy *= scalar;
+    matrix->yy *= scalar;
+
+    matrix->x0 *= scalar;
+    matrix->y0 *= scalar;
+}
+
+/* This function isn't a correct adjoint in that the implicit 1 in the
+   homogeneous result should actually be ad-bc instead. But, since this
+   adjoint is only used in the computation of the inverse, which
+   divides by det (A)=ad-bc anyway, everything works out in the end. */
+static void
+_cairo_matrix_compute_adjoint (cairo_matrix_t *matrix)
+{
+    /* adj (A) = transpose (C:cofactor (A,i,j)) */
+    double a, b, c, d, tx, ty;
+
+    _cairo_matrix_get_affine (matrix,
+			      &a,  &b,
+			      &c,  &d,
+			      &tx, &ty);
+
+    cairo_matrix_init (matrix,
+		       d, -b,
+		       -c, a,
+		       c*ty - d*tx, b*tx - a*ty);
+}
+
+/**
+ * cairo_matrix_invert:
+ * @matrix: a #cairo_matrix_t
+ *
+ * Changes @matrix to be the inverse of its original value. Not
+ * all transformation matrices have inverses; if the matrix
+ * collapses points together (it is <firstterm>degenerate</firstterm>),
+ * then it has no inverse and this function will fail.
+ *
+ * Returns: If @matrix has an inverse, modifies @matrix to
+ *  be the inverse matrix and returns %CAIRO_STATUS_SUCCESS. Otherwise,
+ *  returns %CAIRO_STATUS_INVALID_MATRIX.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_matrix_invert (cairo_matrix_t *matrix)
+{
+    double det;
+
+    /* Simple scaling|translation matrices are quite common... */
+    if (matrix->xy == 0. && matrix->yx == 0.) {
+	matrix->x0 = -matrix->x0;
+	matrix->y0 = -matrix->y0;
+
+	if (matrix->xx != 1.) {
+	    if (matrix->xx == 0.)
+		return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+	    matrix->xx = 1. / matrix->xx;
+	    matrix->x0 *= matrix->xx;
+	}
+
+	if (matrix->yy != 1.) {
+	    if (matrix->yy == 0.)
+		return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+	    matrix->yy = 1. / matrix->yy;
+	    matrix->y0 *= matrix->yy;
+	}
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* inv (A) = 1/det (A) * adj (A) */
+    det = _cairo_matrix_compute_determinant (matrix);
+
+    if (! ISFINITE (det))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    if (det == 0)
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    _cairo_matrix_compute_adjoint (matrix);
+    _cairo_matrix_scalar_multiply (matrix, 1 / det);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def(cairo_matrix_invert);
+
+cairo_bool_t
+_cairo_matrix_is_invertible (const cairo_matrix_t *matrix)
+{
+    double det;
+
+    det = _cairo_matrix_compute_determinant (matrix);
+
+    return ISFINITE (det) && det != 0.;
+}
+
+cairo_bool_t
+_cairo_matrix_is_scale_0 (const cairo_matrix_t *matrix)
+{
+    return matrix->xx == 0. &&
+           matrix->xy == 0. &&
+           matrix->yx == 0. &&
+           matrix->yy == 0.;
+}
+
+double
+_cairo_matrix_compute_determinant (const cairo_matrix_t *matrix)
+{
+    double a, b, c, d;
+
+    a = matrix->xx; b = matrix->yx;
+    c = matrix->xy; d = matrix->yy;
+
+    return a*d - b*c;
+}
+
+/**
+ * _cairo_matrix_compute_basis_scale_factors:
+ * @matrix: a matrix
+ * @basis_scale: the scale factor in the direction of basis
+ * @normal_scale: the scale factor in the direction normal to the basis
+ * @x_basis: basis to use.  X basis if true, Y basis otherwise.
+ *
+ * Computes |Mv| and det(M)/|Mv| for v=[1,0] if x_basis is true, and v=[0,1]
+ * otherwise, and M is @matrix.
+ *
+ * Return value: the scale factor of @matrix on the height of the font,
+ * or 1.0 if @matrix is %NULL.
+ **/
+cairo_status_t
+_cairo_matrix_compute_basis_scale_factors (const cairo_matrix_t *matrix,
+					   double *basis_scale, double *normal_scale,
+					   cairo_bool_t x_basis)
+{
+    double det;
+
+    det = _cairo_matrix_compute_determinant (matrix);
+
+    if (! ISFINITE (det))
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+
+    if (det == 0)
+    {
+	*basis_scale = *normal_scale = 0;
+    }
+    else
+    {
+	double x = x_basis != 0;
+	double y = x == 0;
+	double major, minor;
+
+	cairo_matrix_transform_distance (matrix, &x, &y);
+	major = hypot (x, y);
+	/*
+	 * ignore mirroring
+	 */
+	if (det < 0)
+	    det = -det;
+	if (major)
+	    minor = det / major;
+	else
+	    minor = 0.0;
+	if (x_basis)
+	{
+	    *basis_scale = major;
+	    *normal_scale = minor;
+	}
+	else
+	{
+	    *basis_scale = minor;
+	    *normal_scale = major;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_bool_t
+_cairo_matrix_is_integer_translation (const cairo_matrix_t *matrix,
+				      int *itx, int *ity)
+{
+    if (_cairo_matrix_is_translation (matrix))
+    {
+        cairo_fixed_t x0_fixed = _cairo_fixed_from_double (matrix->x0);
+        cairo_fixed_t y0_fixed = _cairo_fixed_from_double (matrix->y0);
+
+        if (_cairo_fixed_is_integer (x0_fixed) &&
+            _cairo_fixed_is_integer (y0_fixed))
+        {
+            if (itx)
+                *itx = _cairo_fixed_integer_part (x0_fixed);
+            if (ity)
+                *ity = _cairo_fixed_integer_part (y0_fixed);
+
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+#define SCALING_EPSILON _cairo_fixed_to_double(1)
+
+/* This only returns true if the matrix is 90 degree rotations or
+ * flips. It appears calling code is relying on this. It will return
+ * false for other rotations even if the scale is one. Approximations
+ * are allowed to handle matricies filled in using trig functions
+ * such as sin(M_PI_2).
+ */
+cairo_bool_t
+_cairo_matrix_has_unity_scale (const cairo_matrix_t *matrix)
+{
+    /* check that the determinant is near +/-1 */
+    double det = _cairo_matrix_compute_determinant (matrix);
+    if (fabs (det * det - 1.0) < SCALING_EPSILON) {
+	/* check that one axis is close to zero */
+	if (fabs (matrix->xy) < SCALING_EPSILON  &&
+	    fabs (matrix->yx) < SCALING_EPSILON)
+	    return TRUE;
+	if (fabs (matrix->xx) < SCALING_EPSILON  &&
+	    fabs (matrix->yy) < SCALING_EPSILON)
+	    return TRUE;
+	/* If rotations are allowed then it must instead test for
+	 * orthogonality. This is xx*xy+yx*yy ~= 0.
+	 */
+    }
+    return FALSE;
+}
+
+/* By pixel exact here, we mean a matrix that is composed only of
+ * 90 degree rotations, flips, and integer translations and produces a 1:1
+ * mapping between source and destination pixels. If we transform an image
+ * with a pixel-exact matrix, filtering is not useful.
+ */
+cairo_bool_t
+_cairo_matrix_is_pixel_exact (const cairo_matrix_t *matrix)
+{
+    cairo_fixed_t x0_fixed, y0_fixed;
+
+    if (! _cairo_matrix_has_unity_scale (matrix))
+	return FALSE;
+
+    x0_fixed = _cairo_fixed_from_double (matrix->x0);
+    y0_fixed = _cairo_fixed_from_double (matrix->y0);
+
+    return _cairo_fixed_is_integer (x0_fixed) && _cairo_fixed_is_integer (y0_fixed);
+}
+
+/*
+  A circle in user space is transformed into an ellipse in device space.
+
+  The following is a derivation of a formula to calculate the length of the
+  major axis for this ellipse; this is useful for error bounds calculations.
+
+  Thanks to Walter Brisken <wbrisken@aoc.nrao.edu> for this derivation:
+
+  1.  First some notation:
+
+  All capital letters represent vectors in two dimensions.  A prime '
+  represents a transformed coordinate.  Matrices are written in underlined
+  form, ie _R_.  Lowercase letters represent scalar real values.
+
+  2.  The question has been posed:  What is the maximum expansion factor
+  achieved by the linear transformation
+
+  X' = X _R_
+
+  where _R_ is a real-valued 2x2 matrix with entries:
+
+  _R_ = [a b]
+        [c d]  .
+
+  In other words, what is the maximum radius, MAX[ |X'| ], reached for any
+  X on the unit circle ( |X| = 1 ) ?
+
+  3.  Some useful formulae
+
+  (A) through (C) below are standard double-angle formulae.  (D) is a lesser
+  known result and is derived below:
+
+  (A)  sin²(θ) = (1 - cos(2*θ))/2
+  (B)  cos²(θ) = (1 + cos(2*θ))/2
+  (C)  sin(θ)*cos(θ) = sin(2*θ)/2
+  (D)  MAX[a*cos(θ) + b*sin(θ)] = sqrt(a² + b²)
+
+  Proof of (D):
+
+  find the maximum of the function by setting the derivative to zero:
+
+       -a*sin(θ)+b*cos(θ) = 0
+
+  From this it follows that
+
+       tan(θ) = b/a
+
+  and hence
+
+       sin(θ) = b/sqrt(a² + b²)
+
+  and
+
+       cos(θ) = a/sqrt(a² + b²)
+
+  Thus the maximum value is
+
+       MAX[a*cos(θ) + b*sin(θ)] = (a² + b²)/sqrt(a² + b²)
+                                   = sqrt(a² + b²)
+
+  4.  Derivation of maximum expansion
+
+  To find MAX[ |X'| ] we search brute force method using calculus.  The unit
+  circle on which X is constrained is to be parameterized by t:
+
+       X(θ) = (cos(θ), sin(θ))
+
+  Thus
+
+       X'(θ) = X(θ) * _R_ = (cos(θ), sin(θ)) * [a b]
+                                               [c d]
+             = (a*cos(θ) + c*sin(θ), b*cos(θ) + d*sin(θ)).
+
+  Define
+
+       r(θ) = |X'(θ)|
+
+  Thus
+
+       r²(θ) = (a*cos(θ) + c*sin(θ))² + (b*cos(θ) + d*sin(θ))²
+             = (a² + b²)*cos²(θ) + (c² + d²)*sin²(θ)
+                 + 2*(a*c + b*d)*cos(θ)*sin(θ)
+
+  Now apply the double angle formulae (A) to (C) from above:
+
+       r²(θ) = (a² + b² + c² + d²)/2
+	     + (a² + b² - c² - d²)*cos(2*θ)/2
+  	     + (a*c + b*d)*sin(2*θ)
+             = f + g*cos(φ) + h*sin(φ)
+
+  Where
+
+       f = (a² + b² + c² + d²)/2
+       g = (a² + b² - c² - d²)/2
+       h = (a*c + d*d)
+       φ = 2*θ
+
+  It is clear that MAX[ |X'| ] = sqrt(MAX[ r² ]).  Here we determine MAX[ r² ]
+  using (D) from above:
+
+       MAX[ r² ] = f + sqrt(g² + h²)
+
+  And finally
+
+       MAX[ |X'| ] = sqrt( f + sqrt(g² + h²) )
+
+  Which is the solution to this problem.
+
+  Walter Brisken
+  2004/10/08
+
+  (Note that the minor axis length is at the minimum of the above solution,
+  which is just sqrt ( f - sqrt(g² + h²) ) given the symmetry of (D)).
+
+
+  For another derivation of the same result, using Singular Value Decomposition,
+  see doc/tutorial/src/singular.c.
+*/
+
+/* determine the length of the major axis of a circle of the given radius
+   after applying the transformation matrix. */
+double
+_cairo_matrix_transformed_circle_major_axis (const cairo_matrix_t *matrix,
+					     double radius)
+{
+    double  a, b, c, d, f, g, h, i, j;
+
+    if (_cairo_matrix_has_unity_scale (matrix))
+	return radius;
+
+    _cairo_matrix_get_affine (matrix,
+                              &a, &b,
+                              &c, &d,
+                              NULL, NULL);
+
+    i = a*a + b*b;
+    j = c*c + d*d;
+
+    f = 0.5 * (i + j);
+    g = 0.5 * (i - j);
+    h = a*c + b*d;
+
+    return radius * sqrt (f + hypot (g, h));
+
+    /*
+     * we don't need the minor axis length, which is
+     * double min = radius * sqrt (f - sqrt (g*g+h*h));
+     */
+}
+
+static const pixman_transform_t pixman_identity_transform = {{
+        {1 << 16,        0,       0},
+        {       0, 1 << 16,       0},
+        {       0,       0, 1 << 16}
+    }};
+
+static cairo_status_t
+_cairo_matrix_to_pixman_matrix (const cairo_matrix_t	*matrix,
+				pixman_transform_t	*pixman_transform,
+				double xc,
+				double yc)
+{
+    cairo_matrix_t inv;
+    unsigned max_iterations;
+
+    pixman_transform->matrix[0][0] = _cairo_fixed_16_16_from_double (matrix->xx);
+    pixman_transform->matrix[0][1] = _cairo_fixed_16_16_from_double (matrix->xy);
+    pixman_transform->matrix[0][2] = _cairo_fixed_16_16_from_double (matrix->x0);
+
+    pixman_transform->matrix[1][0] = _cairo_fixed_16_16_from_double (matrix->yx);
+    pixman_transform->matrix[1][1] = _cairo_fixed_16_16_from_double (matrix->yy);
+    pixman_transform->matrix[1][2] = _cairo_fixed_16_16_from_double (matrix->y0);
+
+    pixman_transform->matrix[2][0] = 0;
+    pixman_transform->matrix[2][1] = 0;
+    pixman_transform->matrix[2][2] = 1 << 16;
+
+    /* The conversion above breaks cairo's translation invariance:
+     * a translation of (a, b) in device space translates to
+     * a translation of (xx * a + xy * b, yx * a + yy * b)
+     * for cairo, while pixman uses rounded versions of xx ... yy.
+     * This error increases as a and b get larger.
+     *
+     * To compensate for this, we fix the point (xc, yc) in pattern
+     * space and adjust pixman's transform to agree with cairo's at
+     * that point.
+     */
+
+    if (_cairo_matrix_has_unity_scale (matrix))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (unlikely (fabs (matrix->xx) > PIXMAN_MAX_INT ||
+		  fabs (matrix->xy) > PIXMAN_MAX_INT ||
+		  fabs (matrix->x0) > PIXMAN_MAX_INT ||
+		  fabs (matrix->yx) > PIXMAN_MAX_INT ||
+		  fabs (matrix->yy) > PIXMAN_MAX_INT ||
+		  fabs (matrix->y0) > PIXMAN_MAX_INT))
+    {
+	return _cairo_error (CAIRO_STATUS_INVALID_MATRIX);
+    }
+
+    /* Note: If we can't invert the transformation, skip the adjustment. */
+    inv = *matrix;
+    if (cairo_matrix_invert (&inv) != CAIRO_STATUS_SUCCESS)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* find the pattern space coordinate that maps to (xc, yc) */
+    max_iterations = 5;
+    do {
+	double x,y;
+	pixman_vector_t vector;
+	cairo_fixed_16_16_t dx, dy;
+
+	vector.vector[0] = _cairo_fixed_16_16_from_double (xc);
+	vector.vector[1] = _cairo_fixed_16_16_from_double (yc);
+	vector.vector[2] = 1 << 16;
+
+	/* If we can't transform the reference point, skip the adjustment. */
+	if (! pixman_transform_point_3d (pixman_transform, &vector))
+	    return CAIRO_STATUS_SUCCESS;
+
+	x = pixman_fixed_to_double (vector.vector[0]);
+	y = pixman_fixed_to_double (vector.vector[1]);
+	cairo_matrix_transform_point (&inv, &x, &y);
+
+	/* Ideally, the vector should now be (xc, yc).
+	 * We can now compensate for the resulting error.
+	 */
+	x -= xc;
+	y -= yc;
+	cairo_matrix_transform_distance (matrix, &x, &y);
+	dx = _cairo_fixed_16_16_from_double (x);
+	dy = _cairo_fixed_16_16_from_double (y);
+	pixman_transform->matrix[0][2] -= dx;
+	pixman_transform->matrix[1][2] -= dy;
+
+	if (dx == 0 && dy == 0)
+	    return CAIRO_STATUS_SUCCESS;
+    } while (--max_iterations);
+
+    /* We didn't find an exact match between cairo and pixman, but
+     * the matrix should be mostly correct */
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline double
+_pixman_nearest_sample (double d)
+{
+    return ceil (d - .5);
+}
+
+/**
+ * _cairo_matrix_is_pixman_translation:
+ * @matrix: a matrix
+ * @filter: the filter to be used on the pattern transformed by @matrix
+ * @x_offset: the translation in the X direction
+ * @y_offset: the translation in the Y direction
+ *
+ * Checks if @matrix translated by (x_offset, y_offset) can be
+ * represented using just an offset (within the range pixman can
+ * accept) and an identity matrix.
+ *
+ * Passing a non-zero value in x_offset/y_offset has the same effect
+ * as applying cairo_matrix_translate(matrix, x_offset, y_offset) and
+ * setting x_offset and y_offset to 0.
+ *
+ * Upon return x_offset and y_offset contain the translation vector if
+ * the return value is %TRUE. If the return value is %FALSE, they will
+ * not be modified.
+ *
+ * Return value: %TRUE if @matrix can be represented as a pixman
+ * translation, %FALSE otherwise.
+ **/
+cairo_bool_t
+_cairo_matrix_is_pixman_translation (const cairo_matrix_t     *matrix,
+				     cairo_filter_t            filter,
+				     int                      *x_offset,
+				     int                      *y_offset)
+{
+    double tx, ty;
+
+    if (!_cairo_matrix_is_translation (matrix))
+	return FALSE;
+
+    if (matrix->x0 == 0. && matrix->y0 == 0.)
+	return TRUE;
+
+    tx = matrix->x0 + *x_offset;
+    ty = matrix->y0 + *y_offset;
+
+    if (filter == CAIRO_FILTER_FAST || filter == CAIRO_FILTER_NEAREST) {
+	tx = _pixman_nearest_sample (tx);
+	ty = _pixman_nearest_sample (ty);
+    } else if (tx != floor (tx) || ty != floor (ty)) {
+	return FALSE;
+    }
+
+    if (fabs (tx) > PIXMAN_MAX_INT || fabs (ty) > PIXMAN_MAX_INT)
+	return FALSE;
+
+    *x_offset = _cairo_lround (tx);
+    *y_offset = _cairo_lround (ty);
+    return TRUE;
+}
+
+/**
+ * _cairo_matrix_to_pixman_matrix_offset:
+ * @matrix: a matrix
+ * @filter: the filter to be used on the pattern transformed by @matrix
+ * @xc: the X coordinate of the point to fix in pattern space
+ * @yc: the Y coordinate of the point to fix in pattern space
+ * @out_transform: the transformation which best approximates @matrix
+ * @x_offset: the translation in the X direction
+ * @y_offset: the translation in the Y direction
+ *
+ * This function tries to represent @matrix translated by (x_offset,
+ * y_offset) as a %pixman_transform_t and an translation.
+ *
+ * Passing a non-zero value in x_offset/y_offset has the same effect
+ * as applying cairo_matrix_translate(matrix, x_offset, y_offset) and
+ * setting x_offset and y_offset to 0.
+ *
+ * If it is possible to represent the matrix with an identity
+ * %pixman_transform_t and a translation within the valid range for
+ * pixman, this function will set @out_transform to be the identity,
+ * @x_offset and @y_offset to be the translation vector and will
+ * return %CAIRO_INT_STATUS_NOTHING_TO_DO. Otherwise it will try to
+ * evenly divide the translational component of @matrix between
+ * @out_transform and (@x_offset, @y_offset).
+ *
+ * Upon return x_offset and y_offset contain the translation vector.
+ *
+ * Return value: %CAIRO_INT_STATUS_NOTHING_TO_DO if the out_transform
+ * is the identity, %CAIRO_STATUS_INVALID_MATRIX if it was not
+ * possible to represent @matrix as a pixman_transform_t without
+ * overflows, %CAIRO_STATUS_SUCCESS otherwise.
+ **/
+cairo_status_t
+_cairo_matrix_to_pixman_matrix_offset (const cairo_matrix_t	*matrix,
+				       cairo_filter_t            filter,
+				       double                    xc,
+				       double                    yc,
+				       pixman_transform_t	*out_transform,
+				       int                      *x_offset,
+				       int                      *y_offset)
+{
+    cairo_bool_t is_pixman_translation;
+
+    is_pixman_translation = _cairo_matrix_is_pixman_translation (matrix,
+								 filter,
+								 x_offset,
+								 y_offset);
+
+    if (is_pixman_translation) {
+	*out_transform = pixman_identity_transform;
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    } else {
+	cairo_matrix_t m;
+
+	m = *matrix;
+	cairo_matrix_translate (&m, *x_offset, *y_offset);
+	if (m.x0 != 0.0 || m.y0 != 0.0) {
+	    double tx, ty, norm;
+	    int i, j;
+
+	    /* pixman also limits the [xy]_offset to 16 bits so evenly
+	     * spread the bits between the two.
+	     *
+	     * To do this, find the solutions of:
+	     *   |x| = |x*m.xx + y*m.xy + m.x0|
+	     *   |y| = |x*m.yx + y*m.yy + m.y0|
+	     *
+	     * and select the one whose maximum norm is smallest.
+	     */
+	    tx = m.x0;
+	    ty = m.y0;
+	    norm = MAX (fabs (tx), fabs (ty));
+
+	    for (i = -1; i < 2; i+=2) {
+		for (j = -1; j < 2; j+=2) {
+		    double x, y, den, new_norm;
+
+		    den = (m.xx + i) * (m.yy + j) - m.xy * m.yx;
+		    if (fabs (den) < DBL_EPSILON)
+			continue;
+
+		    x = m.y0 * m.xy - m.x0 * (m.yy + j);
+		    y = m.x0 * m.yx - m.y0 * (m.xx + i);
+
+		    den = 1 / den;
+		    x *= den;
+		    y *= den;
+
+		    new_norm = MAX (fabs (x), fabs (y));
+		    if (norm > new_norm) {
+			norm = new_norm;
+			tx = x;
+			ty = y;
+		    }
+		}
+	    }
+
+	    tx = floor (tx);
+	    ty = floor (ty);
+	    *x_offset = -tx;
+	    *y_offset = -ty;
+	    cairo_matrix_translate (&m, tx, ty);
+	} else {
+	    *x_offset = 0;
+	    *y_offset = 0;
+	}
+
+	return _cairo_matrix_to_pixman_matrix (&m, out_transform, xc, yc);
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-mempool-private.h b/libs/cairo-1.16.0/src/cairo-mempool-private.h
new file mode 100644
index 0000000..a09f6ce
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mempool-private.h
@@ -0,0 +1,85 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_MEMPOOL_PRIVATE_H
+#define CAIRO_MEMPOOL_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+
+#include <stddef.h> /* for size_t */
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_mempool cairo_mempool_t;
+
+struct _cairo_mempool {
+    char *base;
+    struct _cairo_memblock {
+	int bits;
+	cairo_list_t link;
+    } *blocks;
+    cairo_list_t free[32];
+    unsigned char *map;
+
+    unsigned int num_blocks;
+    int min_bits;     /* Minimum block size is 1 << min_bits */
+    int num_sizes;
+    int max_free_bits;
+
+    size_t free_bytes;
+    size_t max_bytes;
+};
+
+cairo_private cairo_status_t
+_cairo_mempool_init (cairo_mempool_t *pool,
+		     void *base,
+		     size_t bytes,
+		     int min_bits,
+		     int num_sizes);
+
+cairo_private void *
+_cairo_mempool_alloc (cairo_mempool_t *pi, size_t bytes);
+
+cairo_private void
+_cairo_mempool_free (cairo_mempool_t *pi, void *storage);
+
+cairo_private void
+_cairo_mempool_fini (cairo_mempool_t *pool);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_MEMPOOL_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-mempool.c b/libs/cairo-1.16.0/src/cairo-mempool.c
new file mode 100644
index 0000000..ce40ce5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mempool.c
@@ -0,0 +1,369 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipoolent may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-mempool-private.h"
+#include "cairo-list-inline.h"
+
+/* a simple buddy allocator for memory pools
+ * XXX fragmentation? use Doug Lea's malloc?
+ */
+
+#define BITTEST(p, n)  ((p)->map[(n) >> 3] &   (128 >> ((n) & 7)))
+#define BITSET(p, n)   ((p)->map[(n) >> 3] |=  (128 >> ((n) & 7)))
+#define BITCLEAR(p, n) ((p)->map[(n) >> 3] &= ~(128 >> ((n) & 7)))
+
+static void
+clear_bits (cairo_mempool_t *pool, size_t first, size_t last)
+{
+    size_t i, n = last;
+    size_t first_full = (first + 7) & ~7;
+    size_t past_full = last & ~7;
+    size_t bytes;
+
+    if (n > first_full)
+	n = first_full;
+    for (i = first; i < n; i++)
+	  BITCLEAR (pool, i);
+
+    if (past_full > first_full) {
+	bytes = past_full - first_full;
+	bytes = bytes >> 3;
+	memset (pool->map + (first_full >> 3), 0, bytes);
+    }
+
+    if (past_full < n)
+	past_full = n;
+    for (i = past_full; i < last; i++)
+	BITCLEAR (pool, i);
+}
+
+static void
+free_bits (cairo_mempool_t *pool, size_t start, int bits, cairo_bool_t clear)
+{
+    struct _cairo_memblock *block;
+
+    if (clear)
+	clear_bits (pool, start, start + (1 << bits));
+
+    block = pool->blocks + start;
+    block->bits = bits;
+
+    cairo_list_add (&block->link, &pool->free[bits]);
+
+    pool->free_bytes += 1 << (bits + pool->min_bits);
+    if (bits > pool->max_free_bits)
+	pool->max_free_bits = bits;
+}
+
+/* Add a chunk to the free list */
+static void
+free_blocks (cairo_mempool_t *pool,
+	     size_t first,
+	     size_t last,
+	     cairo_bool_t clear)
+{
+    size_t i, len;
+    int bits = 0;
+
+    for (i = first, len = 1; i < last; i += len) {
+        /* To avoid cost quadratic in the number of different
+	 * blocks produced from this chunk of store, we have to
+	 * use the size of the previous block produced from this
+	 * chunk as the starting point to work out the size of the
+	 * next block we can produce. If you look at the binary
+	 * representation of the starting points of the blocks
+	 * produced, you can see that you first of all increase the
+	 * size of the blocks produced up to some maximum as the
+	 * address dealt with gets offsets added on which zap out
+	 * low order bits, then decrease as the low order bits of the
+	 * final block produced get added in. E.g. as you go from
+	 * 001 to 0111 you generate blocks
+	 * of size 001 at 001 taking you to 010
+	 * of size 010 at 010 taking you to 100
+	 * of size 010 at 100 taking you to 110
+	 * of size 001 at 110 taking you to 111
+	 * So the maximum total cost of the loops below this comment
+	 * is one trip from the lowest blocksize to the highest and
+	 * back again.
+	 */
+	while (bits < pool->num_sizes - 1) {
+	    size_t next_bits = bits + 1;
+	    size_t next_len = len << 1;
+
+	    if (i + next_bits > last) {
+		/* off end of chunk to be freed */
+	        break;
+	    }
+
+	    if (i & (next_len - 1)) /* block would not be on boundary */
+	        break;
+
+	    bits = next_bits;
+	    len = next_len;
+	}
+
+	do {
+	    if (i + len <= last && /* off end of chunk to be freed */
+		(i & (len - 1)) == 0) /* block would not be on boundary */
+		break;
+
+	    bits--; len >>=1;
+	} while (len);
+
+	if (len == 0)
+	    break;
+
+	free_bits (pool, i, bits, clear);
+    }
+}
+
+static struct _cairo_memblock *
+get_buddy (cairo_mempool_t *pool, size_t offset, int bits)
+{
+    struct _cairo_memblock *block;
+
+    if (offset + (1 << bits) >= pool->num_blocks)
+	return NULL; /* invalid */
+
+    if (BITTEST (pool, offset + (1 << bits) - 1))
+	return NULL; /* buddy is allocated */
+
+    block = pool->blocks + offset;
+    if (block->bits != bits)
+	return NULL; /* buddy is partially allocated */
+
+    return block;
+}
+
+static void
+merge_buddies (cairo_mempool_t *pool,
+	       struct _cairo_memblock *block,
+	       int max_bits)
+{
+    size_t block_offset = block - pool->blocks;
+    int bits = block->bits;
+
+    while (bits < max_bits - 1) {
+	/* while you can, merge two blocks and get a legal block size */
+	size_t buddy_offset = block_offset ^ (1 << bits);
+
+	block = get_buddy (pool, buddy_offset, bits);
+	if (block == NULL)
+	    break;
+
+	cairo_list_del (&block->link);
+
+	/* Merged block starts at buddy */
+	if (buddy_offset < block_offset)
+	    block_offset = buddy_offset;
+
+	bits++;
+    }
+
+    block = pool->blocks + block_offset;
+    block->bits = bits;
+    cairo_list_add (&block->link, &pool->free[bits]);
+
+    if (bits > pool->max_free_bits)
+	pool->max_free_bits = bits;
+}
+
+/* attempt to merge all available buddies up to a particular size */
+static int
+merge_bits (cairo_mempool_t *pool, int max_bits)
+{
+    struct _cairo_memblock *block, *buddy, *next;
+    int bits;
+
+    for (bits = 0; bits < max_bits - 1; bits++) {
+	cairo_list_foreach_entry_safe (block, next,
+				       struct _cairo_memblock,
+				       &pool->free[bits],
+				       link)
+	{
+	    size_t buddy_offset = (block - pool->blocks) ^ (1 << bits);
+
+	    buddy = get_buddy (pool, buddy_offset, bits);
+	    if (buddy == NULL)
+		continue;
+
+	    if (buddy == next) {
+		next = cairo_container_of (buddy->link.next,
+					   struct _cairo_memblock,
+					   link);
+	    }
+
+	    cairo_list_del (&block->link);
+	    merge_buddies (pool, block, max_bits);
+	}
+    }
+
+    return pool->max_free_bits;
+}
+
+/* find store for 1 << bits blocks */
+static void *
+buddy_malloc (cairo_mempool_t *pool, int bits)
+{
+    size_t past, offset;
+    struct _cairo_memblock *block;
+    int b;
+
+    if (bits > pool->max_free_bits && bits > merge_bits (pool, bits))
+	return NULL;
+
+    /* Find a list with blocks big enough on it */
+    block = NULL;
+    for (b = bits; b <= pool->max_free_bits; b++) {
+	if (! cairo_list_is_empty (&pool->free[b])) {
+	    block = cairo_list_first_entry (&pool->free[b],
+					    struct _cairo_memblock,
+					    link);
+	    break;
+	}
+    }
+    assert (block != NULL);
+
+    cairo_list_del (&block->link);
+
+    while (cairo_list_is_empty (&pool->free[pool->max_free_bits])) {
+	if (--pool->max_free_bits == -1)
+	    break;
+    }
+
+    /* Mark end of allocated area */
+    offset = block - pool->blocks;
+    past = offset + (1 << bits);
+    BITSET (pool, past - 1);
+    block->bits = bits;
+
+    /* If we used a larger free block than we needed, free the rest */
+    pool->free_bytes -= 1 << (b + pool->min_bits);
+    free_blocks (pool, past, offset + (1 << b), 0);
+
+    return pool->base + ((block - pool->blocks) << pool->min_bits);
+}
+
+cairo_status_t
+_cairo_mempool_init (cairo_mempool_t *pool,
+		      void *base, size_t bytes,
+		      int min_bits, int num_sizes)
+{
+    unsigned long tmp;
+    int num_blocks;
+    int i;
+
+    /* Align the start to an integral chunk */
+    tmp = ((unsigned long) base) & ((1 << min_bits) - 1);
+    if (tmp) {
+	tmp = (1 << min_bits) - tmp;
+	base = (char *)base + tmp;
+	bytes -= tmp;
+    }
+
+    assert ((((unsigned long) base) & ((1 << min_bits) - 1)) == 0);
+    assert (num_sizes < ARRAY_LENGTH (pool->free));
+
+    pool->base = base;
+    pool->free_bytes = 0;
+    pool->max_bytes = bytes;
+    pool->max_free_bits = -1;
+
+    num_blocks = bytes >> min_bits;
+    pool->blocks = calloc (num_blocks, sizeof (struct _cairo_memblock));
+    if (pool->blocks == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    pool->num_blocks = num_blocks;
+    pool->min_bits = min_bits;
+    pool->num_sizes = num_sizes;
+
+    for (i = 0; i < ARRAY_LENGTH (pool->free); i++)
+	cairo_list_init (&pool->free[i]);
+
+    pool->map = _cairo_malloc ((num_blocks + 7) >> 3);
+    if (pool->map == NULL) {
+	free (pool->blocks);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    memset (pool->map, -1, (num_blocks + 7) >> 3);
+    clear_bits (pool, 0, num_blocks);
+
+    /* Now add all blocks to the free list */
+    free_blocks (pool, 0, num_blocks, 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void *
+_cairo_mempool_alloc (cairo_mempool_t *pool, size_t bytes)
+{
+    size_t size;
+    int bits;
+
+    size = 1 << pool->min_bits;
+    for (bits = 0; size < bytes; bits++)
+	size <<= 1;
+    if (bits >= pool->num_sizes)
+	return NULL;
+
+    return buddy_malloc (pool, bits);
+}
+
+void
+_cairo_mempool_free (cairo_mempool_t *pool, void *storage)
+{
+    size_t block_offset;
+    struct _cairo_memblock *block;
+
+    block_offset = ((char *)storage - pool->base) >> pool->min_bits;
+    block = pool->blocks + block_offset;
+
+    BITCLEAR (pool, block_offset + ((1 << block->bits) - 1));
+    pool->free_bytes += 1 << (block->bits + pool->min_bits);
+
+    merge_buddies (pool, block, pool->num_sizes);
+}
+
+void
+_cairo_mempool_fini (cairo_mempool_t *pool)
+{
+    free (pool->map);
+    free (pool->blocks);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-mesh-pattern-rasterizer.c b/libs/cairo-1.16.0/src/cairo-mesh-pattern-rasterizer.c
new file mode 100644
index 0000000..e7f0db6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mesh-pattern-rasterizer.c
@@ -0,0 +1,941 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright 2009 Andrea Canciani
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Andrea Canciani.
+ *
+ * Contributor(s):
+ *	Andrea Canciani <ranma42@gmail.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-pattern-private.h"
+
+/*
+ * Rasterizer for mesh patterns.
+ *
+ * This implementation is based on techniques derived from several
+ * papers (available from ACM):
+ *
+ * - Lien, Shantz and Pratt "Adaptive Forward Differencing for
+ *   Rendering Curves and Surfaces" (discussion of the AFD technique,
+ *   bound of 1/sqrt(2) on step length without proof)
+ *
+ * - Popescu and Rosen, "Forward rasterization" (description of
+ *   forward rasterization, proof of the previous bound)
+ *
+ * - Klassen, "Integer Forward Differencing of Cubic Polynomials:
+ *   Analysis and Algorithms"
+ *
+ * - Klassen, "Exact Integer Hybrid Subdivision and Forward
+ *   Differencing of Cubics" (improving the bound on the minimum
+ *   number of steps)
+ *
+ * - Chang, Shantz and Rocchetti, "Rendering Cubic Curves and Surfaces
+ *   with Integer Adaptive Forward Differencing" (analysis of forward
+ *   differencing applied to Bezier patches)
+ *
+ * Notes:
+ * - Poor performance expected in degenerate cases
+ *
+ * - Patches mostly outside the drawing area are drawn completely (and
+ *   clipped), wasting time
+ *
+ * - Both previous problems are greatly reduced by splitting until a
+ *   reasonably small size and clipping the new tiles: execution time
+ *   is quadratic in the convex-hull diameter instead than linear to
+ *   the painted area. Splitting the tiles doesn't change the painted
+ *   area but (usually) reduces the bounding box area (bbox area can
+ *   remain the same after splitting, but cannot grow)
+ *
+ * - The initial implementation used adaptive forward differencing,
+ *   but simple forward differencing scored better in benchmarks
+ *
+ * Idea:
+ *
+ * We do a sampling over the cubic patch with step du and dv (in the
+ * two parameters) that guarantees that any point of our sampling will
+ * be at most at 1/sqrt(2) from its adjacent points. In formulae
+ * (assuming B is the patch):
+ *
+ *   |B(u,v) - B(u+du,v)| < 1/sqrt(2)
+ *   |B(u,v) - B(u,v+dv)| < 1/sqrt(2)
+ *
+ * This means that every pixel covered by the patch will contain at
+ * least one of the samples, thus forward rasterization can be
+ * performed. Sketch of proof (from Popescu and Rosen):
+ *
+ * Let's take the P pixel we're interested into. If we assume it to be
+ * square, its boundaries define 9 regions on the plane:
+ *
+ * 1|2|3
+ * -+-+-
+ * 8|P|4
+ * -+-+-
+ * 7|6|5
+ *
+ * Let's check that the pixel P will contain at least one point
+ * assuming that it is covered by the patch.
+ *
+ * Since the pixel is covered by the patch, its center will belong to
+ * (at least) one of the quads:
+ *
+ *   {(B(u,v), B(u+du,v), B(u,v+dv), B(u+du,v+dv)) for u,v in [0,1]}
+ *
+ * If P doesn't contain any of the corners of the quad:
+ *
+ * - if one of the corners is in 1,3,5 or 7, other two of them have to
+ *   be in 2,4,6 or 8, thus if the last corner is not in P, the length
+ *   of one of the edges will be > 1/sqrt(2)
+ *
+ * - if none of the corners is in 1,3,5 or 7, all of them are in 2,4,6
+ *   and/or 8. If they are all in different regions, they can't
+ *   satisfy the distance constraint. If two of them are in the same
+ *   region (let's say 2), no point is in 6 and again it is impossible
+ *   to have the center of P in the quad respecting the distance
+ *   constraint (both these assertions can be checked by continuity
+ *   considering the length of the edges of a quad with the vertices
+ *   on the edges of P)
+ *
+ * Each of the cases led to a contradiction, so P contains at least
+ * one of the corners of the quad.
+ */
+
+/*
+ * Make sure that errors are less than 1 in fixed point math if you
+ * change these values.
+ *
+ * The error is amplified by about steps^3/4 times.
+ * The rasterizer always uses a number of steps that is a power of 2.
+ *
+ * 256 is the maximum allowed number of steps (to have error < 1)
+ * using 8.24 for the differences.
+ */
+#define STEPS_MAX_V 256.0
+#define STEPS_MAX_U 256.0
+
+/*
+ * If the patch/curve is only partially visible, split it to a finer
+ * resolution to get higher chances to clip (part of) it.
+ *
+ * These values have not been computed, but simply obtained
+ * empirically (by benchmarking some patches). They should never be
+ * greater than STEPS_MAX_V (or STEPS_MAX_U), but they can be as small
+ * as 1 (depending on how much you want to spend time in splitting the
+ * patch/curve when trying to save some rasterization time).
+ */
+#define STEPS_CLIP_V 64.0
+#define STEPS_CLIP_U 64.0
+
+
+/* Utils */
+static inline double
+sqlen (cairo_point_double_t p0, cairo_point_double_t p1)
+{
+    cairo_point_double_t delta;
+
+    delta.x = p0.x - p1.x;
+    delta.y = p0.y - p1.y;
+
+    return delta.x * delta.x + delta.y * delta.y;
+}
+
+static inline int16_t
+_color_delta_to_shifted_short (int32_t from, int32_t to, int shift)
+{
+    int32_t delta = to - from;
+
+    /* We need to round toward zero, because otherwise adding the
+     * delta 2^shift times can overflow */
+    if (delta >= 0)
+	return delta >> shift;
+    else
+	return -((-delta) >> shift);
+}
+
+/*
+ * Convert a number of steps to the equivalent shift.
+ *
+ * Input: the square of the minimum number of steps
+ *
+ * Output: the smallest integer x such that 2^x > steps
+ */
+static inline int
+sqsteps2shift (double steps_sq)
+{
+    int r;
+    frexp (MAX (1.0, steps_sq), &r);
+    return (r + 1) >> 1;
+}
+
+/*
+ * FD functions
+ *
+ * A Bezier curve is defined (with respect to a parameter t in
+ * [0,1]) from its nodes (x,y,z,w) like this:
+ *
+ *   B(t) = x(1-t)^3 + 3yt(1-t)^2 + 3zt^2(1-t) + wt^3
+ *
+ * To efficiently evaluate a Bezier curve, the rasterizer uses forward
+ * differences. Given x, y, z, w (the 4 nodes of the Bezier curve), it
+ * is possible to convert them to forward differences form and walk
+ * over the curve using fd_init (), fd_down () and fd_fwd ().
+ *
+ * f[0] is always the value of the Bezier curve for "current" t.
+ */
+
+/*
+ * Initialize the coefficient for forward differences.
+ *
+ * Input: x,y,z,w are the 4 nodes of the Bezier curve
+ *
+ * Output: f[i] is the i-th difference of the curve
+ *
+ * f[0] is the value of the curve for t==0, i.e. f[0]==x.
+ *
+ * The initial step is 1; this means that each step increases t by 1
+ * (so fd_init () immediately followed by fd_fwd (f) n times makes
+ * f[0] be the value of the curve for t==n).
+ */
+static inline void
+fd_init (double x, double y, double z, double w, double f[4])
+{
+    f[0] = x;
+    f[1] = w - x;
+    f[2] = 6. * (w - 2. * z + y);
+    f[3] = 6. * (w - 3. * z + 3. * y - x);
+}
+
+/*
+ * Halve the step of the coefficients for forward differences.
+ *
+ * Input: f[i] is the i-th difference of the curve
+ *
+ * Output: f[i] is the i-th difference of the curve with half the
+ *         original step
+ *
+ * f[0] is not affected, so the current t is not changed.
+ *
+ * The other coefficients are changed so that the step is half the
+ * original step. This means that doing fd_fwd (f) n times with the
+ * input f results in the same f[0] as doing fd_fwd (f) 2n times with
+ * the output f.
+ */
+static inline void
+fd_down (double f[4])
+{
+    f[3] *= 0.125;
+    f[2] = f[2] * 0.25 - f[3];
+    f[1] = (f[1] - f[2]) * 0.5;
+}
+
+/*
+ * Perform one step of forward differences along the curve.
+ *
+ * Input: f[i] is the i-th difference of the curve
+ *
+ * Output: f[i] is the i-th difference of the curve after one step
+ */
+static inline void
+fd_fwd (double f[4])
+{
+    f[0] += f[1];
+    f[1] += f[2];
+    f[2] += f[3];
+}
+
+/*
+ * Transform to integer forward differences.
+ *
+ * Input: d[n] is the n-th difference (in double precision)
+ *
+ * Output: i[n] is the n-th difference (in fixed point precision)
+ *
+ * i[0] is 9.23 fixed point, other differences are 4.28 fixed point.
+ */
+static inline void
+fd_fixed (double d[4], int32_t i[4])
+{
+    i[0] = _cairo_fixed_16_16_from_double (256 *  2 * d[0]);
+    i[1] = _cairo_fixed_16_16_from_double (256 * 16 * d[1]);
+    i[2] = _cairo_fixed_16_16_from_double (256 * 16 * d[2]);
+    i[3] = _cairo_fixed_16_16_from_double (256 * 16 * d[3]);
+}
+
+/*
+ * Perform one step of integer forward differences along the curve.
+ *
+ * Input: f[n] is the n-th difference
+ *
+ * Output: f[n] is the n-th difference
+ *
+ * f[0] is 9.23 fixed point, other differences are 4.28 fixed point.
+ */
+static inline void
+fd_fixed_fwd (int32_t f[4])
+{
+    f[0] += (f[1] >> 5) + ((f[1] >> 4) & 1);
+    f[1] += f[2];
+    f[2] += f[3];
+}
+
+/*
+ * Compute the minimum number of steps that guarantee that walking
+ * over a curve will leave no holes.
+ *
+ * Input: p[0..3] the nodes of the Bezier curve
+ *
+ * Returns: the square of the number of steps
+ *
+ * Idea:
+ *
+ * We want to make sure that at every step we move by less than
+ * 1/sqrt(2).
+ *
+ * The derivative of the cubic Bezier with nodes (p0, p1, p2, p3) is
+ * the quadratic Bezier with nodes (p1-p0, p2-p1, p3-p2) scaled by 3,
+ * so (since a Bezier curve is always bounded by its convex hull), we
+ * can say that:
+ *
+ *  max(|B'(t)|) <= 3 max (|p1-p0|, |p2-p1|, |p3-p2|)
+ *
+ * We can improve this by noticing that a quadratic Bezier (a,b,c) is
+ * bounded by the quad (a,lerp(a,b,t),lerp(b,c,t),c) for any t, so
+ * (substituting the previous values, using t=0.5 and simplifying):
+ *
+ *  max(|B'(t)|) <= 3 max (|p1-p0|, |p2-p0|/2, |p3-p1|/2, |p3-p2|)
+ *
+ * So, to guarantee a maximum step length of 1/sqrt(2) we must do:
+ *
+ *   3 max (|p1-p0|, |p2-p0|/2, |p3-p1|/2, |p3-p2|) sqrt(2) steps
+ */
+static inline double
+bezier_steps_sq (cairo_point_double_t p[4])
+{
+    double tmp = sqlen (p[0], p[1]);
+    tmp = MAX (tmp, sqlen (p[2], p[3]));
+    tmp = MAX (tmp, sqlen (p[0], p[2]) * .25);
+    tmp = MAX (tmp, sqlen (p[1], p[3]) * .25);
+    return 18.0 * tmp;
+}
+
+/*
+ * Split a 1D Bezier cubic using de Casteljau's algorithm.
+ *
+ * Input: x,y,z,w the nodes of the Bezier curve
+ *
+ * Output: x0,y0,z0,w0 and x1,y1,z1,w1 are respectively the nodes of
+ *         the first half and of the second half of the curve
+ *
+ * The output control nodes have to be distinct.
+ */
+static inline void
+split_bezier_1D (double  x,  double  y,  double  z,  double  w,
+		 double *x0, double *y0, double *z0, double *w0,
+		 double *x1, double *y1, double *z1, double *w1)
+{
+    double tmp;
+
+    *x0 = x;
+    *w1 = w;
+
+    tmp = 0.5 * (y + z);
+    *y0 = 0.5 * (x + y);
+    *z1 = 0.5 * (z + w);
+
+    *z0 = 0.5 * (*y0 + tmp);
+    *y1 = 0.5 * (tmp + *z1);
+
+    *w0 = *x1 = 0.5 * (*z0 + *y1);
+}
+
+/*
+ * Split a Bezier curve using de Casteljau's algorithm.
+ *
+ * Input: p[0..3] the nodes of the Bezier curve
+ *
+ * Output: fst_half[0..3] and snd_half[0..3] are respectively the
+ *         nodes of the first and of the second half of the curve
+ *
+ * fst_half and snd_half must be different, but they can be the same as
+ * nodes.
+ */
+static void
+split_bezier (cairo_point_double_t p[4],
+	      cairo_point_double_t fst_half[4],
+	      cairo_point_double_t snd_half[4])
+{
+    split_bezier_1D (p[0].x, p[1].x, p[2].x, p[3].x,
+		     &fst_half[0].x, &fst_half[1].x, &fst_half[2].x, &fst_half[3].x,
+		     &snd_half[0].x, &snd_half[1].x, &snd_half[2].x, &snd_half[3].x);
+
+    split_bezier_1D (p[0].y, p[1].y, p[2].y, p[3].y,
+		     &fst_half[0].y, &fst_half[1].y, &fst_half[2].y, &fst_half[3].y,
+		     &snd_half[0].y, &snd_half[1].y, &snd_half[2].y, &snd_half[3].y);
+}
+
+
+typedef enum _intersection {
+    INSIDE = -1, /* the interval is entirely contained in the reference interval */
+    OUTSIDE = 0, /* the interval has no intersection with the reference interval */
+    PARTIAL = 1  /* the interval intersects the reference interval (but is not fully inside it) */
+} intersection_t;
+
+/*
+ * Check if an interval if inside another.
+ *
+ * Input: a,b are the extrema of the first interval
+ *        c,d are the extrema of the second interval
+ *
+ * Returns: INSIDE  iff [a,b) intersection [c,d) = [a,b)
+ *          OUTSIDE iff [a,b) intersection [c,d) = {}
+ *          PARTIAL otherwise
+ *
+ * The function assumes a < b and c < d
+ *
+ * Note: Bitwise-anding the results along each component gives the
+ *       expected result for [a,b) x [A,B) intersection [c,d) x [C,D).
+ */
+static inline int
+intersect_interval (double a, double b, double c, double d)
+{
+    if (c <= a && b <= d)
+	return INSIDE;
+    else if (a >= d || b <= c)
+	return OUTSIDE;
+    else
+	return PARTIAL;
+}
+
+/*
+ * Set the color of a pixel.
+ *
+ * Input: data is the base pointer of the image
+ *        width, height are the dimensions of the image
+ *        stride is the stride in bytes between adjacent rows
+ *        x, y are the coordinates of the pixel to be colored
+ *        r,g,b,a are the color components of the color to be set
+ *
+ * Output: the (x,y) pixel in data has the (r,g,b,a) color
+ *
+ * The input color components are not premultiplied, but the data
+ * stored in the image is assumed to be in CAIRO_FORMAT_ARGB32 (8 bpc,
+ * premultiplied).
+ *
+ * If the pixel to be set is outside the image, this function does
+ * nothing.
+ */
+static inline void
+draw_pixel (unsigned char *data, int width, int height, int stride,
+	    int x, int y, uint16_t r, uint16_t g, uint16_t b, uint16_t a)
+{
+    if (likely (0 <= x && 0 <= y && x < width && y < height)) {
+	uint32_t tr, tg, tb, ta;
+
+	/* Premultiply and round */
+	ta = a;
+	tr = r * ta + 0x8000;
+	tg = g * ta + 0x8000;
+	tb = b * ta + 0x8000;
+
+	tr += tr >> 16;
+	tg += tg >> 16;
+	tb += tb >> 16;
+
+	*((uint32_t*) (data + y*(ptrdiff_t)stride + 4*x)) = ((ta << 16) & 0xff000000) |
+	    ((tr >> 8) & 0xff0000) | ((tg >> 16) & 0xff00) | (tb >> 24);
+    }
+}
+
+/*
+ * Forward-rasterize a cubic curve using forward differences.
+ *
+ * Input: data is the base pointer of the image
+ *        width, height are the dimensions of the image
+ *        stride is the stride in bytes between adjacent rows
+ *        ushift is log2(n) if n is the number of desired steps
+ *        dxu[i], dyu[i] are the x,y forward differences of the curve
+ *        r0,g0,b0,a0 are the color components of the start point
+ *        r3,g3,b3,a3 are the color components of the end point
+ *
+ * Output: data will be changed to have the requested curve drawn in
+ *         the specified colors
+ *
+ * The input color components are not premultiplied, but the data
+ * stored in the image is assumed to be in CAIRO_FORMAT_ARGB32 (8 bpc,
+ * premultiplied).
+ *
+ * The function draws n+1 pixels, that is from the point at step 0 to
+ * the point at step n, both included. This is the discrete equivalent
+ * to drawing the curve for values of the interpolation parameter in
+ * [0,1] (including both extremes).
+ */
+static inline void
+rasterize_bezier_curve (unsigned char *data, int width, int height, int stride,
+			int ushift, double dxu[4], double dyu[4],
+			uint16_t r0, uint16_t g0, uint16_t b0, uint16_t a0,
+			uint16_t r3, uint16_t g3, uint16_t b3, uint16_t a3)
+{
+    int32_t xu[4], yu[4];
+    int x0, y0, u, usteps = 1 << ushift;
+
+    uint16_t r = r0, g = g0, b = b0, a = a0;
+    int16_t dr = _color_delta_to_shifted_short (r0, r3, ushift);
+    int16_t dg = _color_delta_to_shifted_short (g0, g3, ushift);
+    int16_t db = _color_delta_to_shifted_short (b0, b3, ushift);
+    int16_t da = _color_delta_to_shifted_short (a0, a3, ushift);
+
+    fd_fixed (dxu, xu);
+    fd_fixed (dyu, yu);
+
+    /*
+     * Use (dxu[0],dyu[0]) as origin for the forward differences.
+     *
+     * This makes it possible to handle much larger coordinates (the
+     * ones that can be represented as cairo_fixed_t)
+     */
+    x0 = _cairo_fixed_from_double (dxu[0]);
+    y0 = _cairo_fixed_from_double (dyu[0]);
+    xu[0] = 0;
+    yu[0] = 0;
+
+    for (u = 0; u <= usteps; ++u) {
+	/*
+	 * This rasterizer assumes that pixels are integer aligned
+	 * squares, so a generic (x,y) point belongs to the pixel with
+	 * top-left coordinates (floor(x), floor(y))
+	 */
+
+	int x = _cairo_fixed_integer_floor (x0 + (xu[0] >> 15) + ((xu[0] >> 14) & 1));
+	int y = _cairo_fixed_integer_floor (y0 + (yu[0] >> 15) + ((yu[0] >> 14) & 1));
+
+	draw_pixel (data, width, height, stride, x, y, r, g, b, a);
+
+	fd_fixed_fwd (xu);
+	fd_fixed_fwd (yu);
+	r += dr;
+	g += dg;
+	b += db;
+	a += da;
+    }
+}
+
+/*
+ * Clip, split and rasterize a Bezier curve.
+ *
+ * Input: data is the base pointer of the image
+ *        width, height are the dimensions of the image
+ *        stride is the stride in bytes between adjacent rows
+ *        p[i] is the i-th node of the Bezier curve
+ *        c0[i] is the i-th color component at the start point
+ *        c3[i] is the i-th color component at the end point
+ *
+ * Output: data will be changed to have the requested curve drawn in
+ *         the specified colors
+ *
+ * The input color components are not premultiplied, but the data
+ * stored in the image is assumed to be in CAIRO_FORMAT_ARGB32 (8 bpc,
+ * premultiplied).
+ *
+ * The color components are red, green, blue and alpha, in this order.
+ *
+ * The function guarantees that it will draw the curve with a step
+ * small enough to never have a distance above 1/sqrt(2) between two
+ * consecutive points (which is needed to ensure that no hole can
+ * appear when using this function to rasterize a patch).
+ */
+static void
+draw_bezier_curve (unsigned char *data, int width, int height, int stride,
+		   cairo_point_double_t p[4], double c0[4], double c3[4])
+{
+    double top, bottom, left, right, steps_sq;
+    int i, v;
+
+    top = bottom = p[0].y;
+    for (i = 1; i < 4; ++i) {
+	top    = MIN (top,    p[i].y);
+	bottom = MAX (bottom, p[i].y);
+    }
+
+    /* Check visibility */
+    v = intersect_interval (top, bottom, 0, height);
+    if (v == OUTSIDE)
+	return;
+
+    left = right = p[0].x;
+    for (i = 1; i < 4; ++i) {
+	left  = MIN (left,  p[i].x);
+	right = MAX (right, p[i].x);
+    }
+
+    v &= intersect_interval (left, right, 0, width);
+    if (v == OUTSIDE)
+	return;
+
+    steps_sq = bezier_steps_sq (p);
+    if (steps_sq >= (v == INSIDE ? STEPS_MAX_U * STEPS_MAX_U : STEPS_CLIP_U * STEPS_CLIP_U)) {
+	/*
+	 * The number of steps is greater than the threshold. This
+	 * means that either the error would become too big if we
+	 * directly rasterized it or that we can probably save some
+	 * time by splitting the curve and clipping part of it
+	 */
+	cairo_point_double_t first[4], second[4];
+	double midc[4];
+	split_bezier (p, first, second);
+	midc[0] = (c0[0] + c3[0]) * 0.5;
+	midc[1] = (c0[1] + c3[1]) * 0.5;
+	midc[2] = (c0[2] + c3[2]) * 0.5;
+	midc[3] = (c0[3] + c3[3]) * 0.5;
+	draw_bezier_curve (data, width, height, stride, first, c0, midc);
+	draw_bezier_curve (data, width, height, stride, second, midc, c3);
+    } else {
+	double xu[4], yu[4];
+	int ushift = sqsteps2shift (steps_sq), k;
+
+	fd_init (p[0].x, p[1].x, p[2].x, p[3].x, xu);
+	fd_init (p[0].y, p[1].y, p[2].y, p[3].y, yu);
+
+	for (k = 0; k < ushift; ++k) {
+	    fd_down (xu);
+	    fd_down (yu);
+	}
+
+	rasterize_bezier_curve (data, width, height, stride, ushift,
+				xu, yu,
+				_cairo_color_double_to_short (c0[0]),
+				_cairo_color_double_to_short (c0[1]),
+				_cairo_color_double_to_short (c0[2]),
+				_cairo_color_double_to_short (c0[3]),
+				_cairo_color_double_to_short (c3[0]),
+				_cairo_color_double_to_short (c3[1]),
+				_cairo_color_double_to_short (c3[2]),
+				_cairo_color_double_to_short (c3[3]));
+
+	/* Draw the end point, to make sure that we didn't leave it
+	 * out because of rounding */
+	draw_pixel (data, width, height, stride,
+		    _cairo_fixed_integer_floor (_cairo_fixed_from_double (p[3].x)),
+		    _cairo_fixed_integer_floor (_cairo_fixed_from_double (p[3].y)),
+		    _cairo_color_double_to_short (c3[0]),
+		    _cairo_color_double_to_short (c3[1]),
+		    _cairo_color_double_to_short (c3[2]),
+		    _cairo_color_double_to_short (c3[3]));
+    }
+}
+
+/*
+ * Forward-rasterize a cubic Bezier patch using forward differences.
+ *
+ * Input: data is the base pointer of the image
+ *        width, height are the dimensions of the image
+ *        stride is the stride in bytes between adjacent rows
+ *        vshift is log2(n) if n is the number of desired steps
+ *        p[i][j], p[i][j] are the the nodes of the Bezier patch
+ *        col[i][j] is the j-th color component of the i-th corner
+ *
+ * Output: data will be changed to have the requested patch drawn in
+ *         the specified colors
+ *
+ * The nodes of the patch are as follows:
+ *
+ * u\v 0    - >    1
+ * 0  p00 p01 p02 p03
+ * |  p10 p11 p12 p13
+ * v  p20 p21 p22 p23
+ * 1  p30 p31 p32 p33
+ *
+ * i.e. u varies along the first component (rows), v varies along the
+ * second one (columns).
+ *
+ * The color components are red, green, blue and alpha, in this order.
+ * c[0..3] are the colors in p00, p30, p03, p33 respectively
+ *
+ * The input color components are not premultiplied, but the data
+ * stored in the image is assumed to be in CAIRO_FORMAT_ARGB32 (8 bpc,
+ * premultiplied).
+ *
+ * If the patch folds over itself, the part with the highest v
+ * parameter is considered above. If both have the same v, the one
+ * with the highest u parameter is above.
+ *
+ * The function draws n+1 curves, that is from the curve at step 0 to
+ * the curve at step n, both included. This is the discrete equivalent
+ * to drawing the patch for values of the interpolation parameter in
+ * [0,1] (including both extremes).
+ */
+static inline void
+rasterize_bezier_patch (unsigned char *data, int width, int height, int stride, int vshift,
+			cairo_point_double_t p[4][4], double col[4][4])
+{
+    double pv[4][2][4], cstart[4], cend[4], dcstart[4], dcend[4];
+    int v, i, k;
+
+    v = 1 << vshift;
+
+    /*
+     * pv[i][0] is the function (represented using forward
+     * differences) mapping v to the x coordinate of the i-th node of
+     * the Bezier curve with parameter u.
+     * (Likewise p[i][0] gives the y coordinate).
+     *
+     * This means that (pv[0][0][0],pv[0][1][0]),
+     * (pv[1][0][0],pv[1][1][0]), (pv[2][0][0],pv[2][1][0]) and
+     * (pv[3][0][0],pv[3][1][0]) are the nodes of the Bezier curve for
+     * the "current" v value (see the FD comments for more details).
+     */
+    for (i = 0; i < 4; ++i) {
+	fd_init (p[i][0].x, p[i][1].x, p[i][2].x, p[i][3].x, pv[i][0]);
+	fd_init (p[i][0].y, p[i][1].y, p[i][2].y, p[i][3].y, pv[i][1]);
+	for (k = 0; k < vshift; ++k) {
+	    fd_down (pv[i][0]);
+	    fd_down (pv[i][1]);
+	}
+    }
+
+    for (i = 0; i < 4; ++i) {
+	cstart[i]  = col[0][i];
+	cend[i]    = col[1][i];
+	dcstart[i] = (col[2][i] - col[0][i]) / v;
+	dcend[i]   = (col[3][i] - col[1][i]) / v;
+    }
+
+    v++;
+    while (v--) {
+	cairo_point_double_t nodes[4];
+	for (i = 0; i < 4; ++i) {
+	    nodes[i].x = pv[i][0][0];
+	    nodes[i].y = pv[i][1][0];
+	}
+
+	draw_bezier_curve (data, width, height, stride, nodes, cstart, cend);
+
+	for (i = 0; i < 4; ++i) {
+	    fd_fwd (pv[i][0]);
+	    fd_fwd (pv[i][1]);
+	    cstart[i] += dcstart[i];
+	    cend[i] += dcend[i];
+	}
+    }
+}
+
+/*
+ * Clip, split and rasterize a Bezier cubic patch.
+ *
+ * Input: data is the base pointer of the image
+ *        width, height are the dimensions of the image
+ *        stride is the stride in bytes between adjacent rows
+ *        p[i][j], p[i][j] are the nodes of the patch
+ *        col[i][j] is the j-th color component of the i-th corner
+ *
+ * Output: data will be changed to have the requested patch drawn in
+ *         the specified colors
+ *
+ * The nodes of the patch are as follows:
+ *
+ * u\v 0    - >    1
+ * 0  p00 p01 p02 p03
+ * |  p10 p11 p12 p13
+ * v  p20 p21 p22 p23
+ * 1  p30 p31 p32 p33
+ *
+ * i.e. u varies along the first component (rows), v varies along the
+ * second one (columns).
+ *
+ * The color components are red, green, blue and alpha, in this order.
+ * c[0..3] are the colors in p00, p30, p03, p33 respectively
+ *
+ * The input color components are not premultiplied, but the data
+ * stored in the image is assumed to be in CAIRO_FORMAT_ARGB32 (8 bpc,
+ * premultiplied).
+ *
+ * If the patch folds over itself, the part with the highest v
+ * parameter is considered above. If both have the same v, the one
+ * with the highest u parameter is above.
+ *
+ * The function guarantees that it will draw the patch with a step
+ * small enough to never have a distance above 1/sqrt(2) between two
+ * adjacent points (which guarantees that no hole can appear).
+ *
+ * This function can be used to rasterize a tile of PDF type 7
+ * shadings (see http://www.adobe.com/devnet/pdf/pdf_reference.html).
+ */
+static void
+draw_bezier_patch (unsigned char *data, int width, int height, int stride,
+		     cairo_point_double_t p[4][4], double c[4][4])
+{
+    double top, bottom, left, right, steps_sq;
+    int i, j, v;
+
+    top = bottom = p[0][0].y;
+    for (i = 0; i < 4; ++i) {
+	for (j= 0; j < 4; ++j) {
+	    top    = MIN (top,    p[i][j].y);
+	    bottom = MAX (bottom, p[i][j].y);
+	}
+    }
+
+    v = intersect_interval (top, bottom, 0, height);
+    if (v == OUTSIDE)
+	return;
+
+    left = right = p[0][0].x;
+    for (i = 0; i < 4; ++i) {
+	for (j= 0; j < 4; ++j) {
+	    left  = MIN (left,  p[i][j].x);
+	    right = MAX (right, p[i][j].x);
+	}
+    }
+
+    v &= intersect_interval (left, right, 0, width);
+    if (v == OUTSIDE)
+	return;
+
+    steps_sq = 0;
+    for (i = 0; i < 4; ++i)
+	steps_sq = MAX (steps_sq, bezier_steps_sq (p[i]));
+
+    if (steps_sq >= (v == INSIDE ? STEPS_MAX_V * STEPS_MAX_V : STEPS_CLIP_V * STEPS_CLIP_V)) {
+	/* The number of steps is greater than the threshold. This
+	 * means that either the error would become too big if we
+	 * directly rasterized it or that we can probably save some
+	 * time by splitting the curve and clipping part of it. The
+	 * patch is only split in the v direction to guarantee that
+	 * rasterizing each part will overwrite parts with low v with
+	 * overlapping parts with higher v. */
+
+	cairo_point_double_t first[4][4], second[4][4];
+	double subc[4][4];
+
+	for (i = 0; i < 4; ++i)
+	    split_bezier (p[i], first[i], second[i]);
+
+	for (i = 0; i < 4; ++i) {
+	    subc[0][i] = c[0][i];
+	    subc[1][i] = c[1][i];
+	    subc[2][i] = 0.5 * (c[0][i] + c[2][i]);
+	    subc[3][i] = 0.5 * (c[1][i] + c[3][i]);
+	}
+
+	draw_bezier_patch (data, width, height, stride, first, subc);
+
+	for (i = 0; i < 4; ++i) {
+	    subc[0][i] = subc[2][i];
+	    subc[1][i] = subc[3][i];
+	    subc[2][i] = c[2][i];
+	    subc[3][i] = c[3][i];
+	}
+	draw_bezier_patch (data, width, height, stride, second, subc);
+    } else {
+	rasterize_bezier_patch (data, width, height, stride, sqsteps2shift (steps_sq), p, c);
+    }
+}
+
+/*
+ * Draw a tensor product shading pattern.
+ *
+ * Input: mesh is the mesh pattern
+ *        data is the base pointer of the image
+ *        width, height are the dimensions of the image
+ *        stride is the stride in bytes between adjacent rows
+ *
+ * Output: data will be changed to have the pattern drawn on it
+ *
+ * data is assumed to be clear and its content is assumed to be in
+ * CAIRO_FORMAT_ARGB32 (8 bpc, premultiplied).
+ *
+ * This function can be used to rasterize a PDF type 7 shading (see
+ * http://www.adobe.com/devnet/pdf/pdf_reference.html).
+ */
+void
+_cairo_mesh_pattern_rasterize (const cairo_mesh_pattern_t *mesh,
+			       void                       *data,
+			       int                         width,
+			       int                         height,
+			       int                         stride,
+			       double                      x_offset,
+			       double                      y_offset)
+{
+    cairo_point_double_t nodes[4][4];
+    double colors[4][4];
+    cairo_matrix_t p2u;
+    unsigned int i, j, k, n;
+    cairo_status_t status;
+    const cairo_mesh_patch_t *patch;
+    const cairo_color_t *c;
+
+    assert (mesh->base.status == CAIRO_STATUS_SUCCESS);
+    assert (mesh->current_patch == NULL);
+
+    p2u = mesh->base.matrix;
+    status = cairo_matrix_invert (&p2u);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    n = _cairo_array_num_elements (&mesh->patches);
+    patch = _cairo_array_index_const (&mesh->patches, 0);
+    for (i = 0; i < n; i++) {
+	for (j = 0; j < 4; j++) {
+	    for (k = 0; k < 4; k++) {
+		nodes[j][k] = patch->points[j][k];
+		cairo_matrix_transform_point (&p2u, &nodes[j][k].x, &nodes[j][k].y);
+		nodes[j][k].x += x_offset;
+		nodes[j][k].y += y_offset;
+	    }
+	}
+
+	c = &patch->colors[0];
+	colors[0][0] = c->red;
+	colors[0][1] = c->green;
+	colors[0][2] = c->blue;
+	colors[0][3] = c->alpha;
+
+	c = &patch->colors[3];
+	colors[1][0] = c->red;
+	colors[1][1] = c->green;
+	colors[1][2] = c->blue;
+	colors[1][3] = c->alpha;
+
+	c = &patch->colors[1];
+	colors[2][0] = c->red;
+	colors[2][1] = c->green;
+	colors[2][2] = c->blue;
+	colors[2][3] = c->alpha;
+
+	c = &patch->colors[2];
+	colors[3][0] = c->red;
+	colors[3][1] = c->green;
+	colors[3][2] = c->blue;
+	colors[3][3] = c->alpha;
+
+	draw_bezier_patch (data, width, height, stride, nodes, colors);
+	patch++;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-misc.c b/libs/cairo-1.16.0/src/cairo-misc.c
new file mode 100644
index 0000000..6e63bc7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-misc.c
@@ -0,0 +1,1118 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2007 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include <locale.h>
+#ifdef HAVE_XLOCALE_H
+#include <xlocale.h>
+#endif
+
+COMPILE_TIME_ASSERT ((int)CAIRO_STATUS_LAST_STATUS < (int)CAIRO_INT_STATUS_UNSUPPORTED);
+COMPILE_TIME_ASSERT (CAIRO_INT_STATUS_LAST_STATUS <= 127);
+
+/**
+ * SECTION:cairo-status
+ * @Title: Error handling
+ * @Short_Description: Decoding cairo's status
+ * @See_Also: cairo_status(), cairo_surface_status(), cairo_pattern_status(),
+ *            cairo_font_face_status(), cairo_scaled_font_status(),
+ *            cairo_region_status()
+ *
+ * Cairo uses a single status type to represent all kinds of errors.  A status
+ * value of %CAIRO_STATUS_SUCCESS represents no error and has an integer value
+ * of zero.  All other status values represent an error.
+ *
+ * Cairo's error handling is designed to be easy to use and safe.  All major
+ * cairo objects <firstterm>retain</firstterm> an error status internally which
+ * can be queried anytime by the users using cairo*_status() calls.  In
+ * the mean time, it is safe to call all cairo functions normally even if the
+ * underlying object is in an error status.  This means that no error handling
+ * code is required before or after each individual cairo function call.
+ **/
+
+/* Public stuff */
+
+/**
+ * cairo_status_to_string:
+ * @status: a cairo status
+ *
+ * Provides a human-readable description of a #cairo_status_t.
+ *
+ * Returns: a string representation of the status
+ *
+ * Since: 1.0
+ **/
+const char *
+cairo_status_to_string (cairo_status_t status)
+{
+    switch (status) {
+    case CAIRO_STATUS_SUCCESS:
+	return "no error has occurred";
+    case CAIRO_STATUS_NO_MEMORY:
+	return "out of memory";
+    case CAIRO_STATUS_INVALID_RESTORE:
+	return "cairo_restore() without matching cairo_save()";
+    case CAIRO_STATUS_INVALID_POP_GROUP:
+	return "no saved group to pop, i.e. cairo_pop_group() without matching cairo_push_group()";
+    case CAIRO_STATUS_NO_CURRENT_POINT:
+	return "no current point defined";
+    case CAIRO_STATUS_INVALID_MATRIX:
+	return "invalid matrix (not invertible)";
+    case CAIRO_STATUS_INVALID_STATUS:
+	return "invalid value for an input cairo_status_t";
+    case CAIRO_STATUS_NULL_POINTER:
+	return "NULL pointer";
+    case CAIRO_STATUS_INVALID_STRING:
+	return "input string not valid UTF-8";
+    case CAIRO_STATUS_INVALID_PATH_DATA:
+	return "input path data not valid";
+    case CAIRO_STATUS_READ_ERROR:
+	return "error while reading from input stream";
+    case CAIRO_STATUS_WRITE_ERROR:
+	return "error while writing to output stream";
+    case CAIRO_STATUS_SURFACE_FINISHED:
+	return "the target surface has been finished";
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH:
+	return "the surface type is not appropriate for the operation";
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH:
+	return "the pattern type is not appropriate for the operation";
+    case CAIRO_STATUS_INVALID_CONTENT:
+	return "invalid value for an input cairo_content_t";
+    case CAIRO_STATUS_INVALID_FORMAT:
+	return "invalid value for an input cairo_format_t";
+    case CAIRO_STATUS_INVALID_VISUAL:
+	return "invalid value for an input Visual*";
+    case CAIRO_STATUS_FILE_NOT_FOUND:
+	return "file not found";
+    case CAIRO_STATUS_INVALID_DASH:
+	return "invalid value for a dash setting";
+    case CAIRO_STATUS_INVALID_DSC_COMMENT:
+	return "invalid value for a DSC comment";
+    case CAIRO_STATUS_INVALID_INDEX:
+	return "invalid index passed to getter";
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE:
+        return "clip region not representable in desired format";
+    case CAIRO_STATUS_TEMP_FILE_ERROR:
+	return "error creating or writing to a temporary file";
+    case CAIRO_STATUS_INVALID_STRIDE:
+	return "invalid value for stride";
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH:
+	return "the font type is not appropriate for the operation";
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE:
+	return "the user-font is immutable";
+    case CAIRO_STATUS_USER_FONT_ERROR:
+	return "error occurred in a user-font callback function";
+    case CAIRO_STATUS_NEGATIVE_COUNT:
+	return "negative number used where it is not allowed";
+    case CAIRO_STATUS_INVALID_CLUSTERS:
+	return "input clusters do not represent the accompanying text and glyph arrays";
+    case CAIRO_STATUS_INVALID_SLANT:
+	return "invalid value for an input cairo_font_slant_t";
+    case CAIRO_STATUS_INVALID_WEIGHT:
+	return "invalid value for an input cairo_font_weight_t";
+    case CAIRO_STATUS_INVALID_SIZE:
+	return "invalid value (typically too big) for the size of the input (surface, pattern, etc.)";
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED:
+	return "user-font method not implemented";
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH:
+	return "the device type is not appropriate for the operation";
+    case CAIRO_STATUS_DEVICE_ERROR:
+	return "an operation to the device caused an unspecified error";
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
+	return "invalid operation during mesh pattern construction";
+    case CAIRO_STATUS_DEVICE_FINISHED:
+	return "the target device has been finished";
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+	return "CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID used but no CAIRO_MIME_TYPE_JBIG2_GLOBAL data provided";
+    case CAIRO_STATUS_PNG_ERROR:
+	return "error occurred in libpng while reading from or writing to a PNG file";
+    case CAIRO_STATUS_FREETYPE_ERROR:
+	return "error occurred in libfreetype";
+    case CAIRO_STATUS_WIN32_GDI_ERROR:
+	return "error occurred in the Windows Graphics Device Interface";
+    case CAIRO_STATUS_TAG_ERROR:
+	return "invalid tag name, attributes, or nesting";
+    default:
+    case CAIRO_STATUS_LAST_STATUS:
+	return "<unknown error status>";
+    }
+}
+
+
+/**
+ * cairo_glyph_allocate:
+ * @num_glyphs: number of glyphs to allocate
+ *
+ * Allocates an array of #cairo_glyph_t's.
+ * This function is only useful in implementations of
+ * #cairo_user_scaled_font_text_to_glyphs_func_t where the user
+ * needs to allocate an array of glyphs that cairo will free.
+ * For all other uses, user can use their own allocation method
+ * for glyphs.
+ *
+ * This function returns %NULL if @num_glyphs is not positive,
+ * or if out of memory.  That means, the %NULL return value
+ * signals out-of-memory only if @num_glyphs was positive.
+ *
+ * Returns: the newly allocated array of glyphs that should be
+ *          freed using cairo_glyph_free()
+ *
+ * Since: 1.8
+ **/
+cairo_glyph_t *
+cairo_glyph_allocate (int num_glyphs)
+{
+    if (num_glyphs <= 0)
+	return NULL;
+
+    return _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+}
+slim_hidden_def (cairo_glyph_allocate);
+
+/**
+ * cairo_glyph_free:
+ * @glyphs: array of glyphs to free, or %NULL
+ *
+ * Frees an array of #cairo_glyph_t's allocated using cairo_glyph_allocate().
+ * This function is only useful to free glyph array returned
+ * by cairo_scaled_font_text_to_glyphs() where cairo returns
+ * an array of glyphs that the user will free.
+ * For all other uses, user can use their own allocation method
+ * for glyphs.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_glyph_free (cairo_glyph_t *glyphs)
+{
+    free (glyphs);
+}
+slim_hidden_def (cairo_glyph_free);
+
+/**
+ * cairo_text_cluster_allocate:
+ * @num_clusters: number of text_clusters to allocate
+ *
+ * Allocates an array of #cairo_text_cluster_t's.
+ * This function is only useful in implementations of
+ * #cairo_user_scaled_font_text_to_glyphs_func_t where the user
+ * needs to allocate an array of text clusters that cairo will free.
+ * For all other uses, user can use their own allocation method
+ * for text clusters.
+ *
+ * This function returns %NULL if @num_clusters is not positive,
+ * or if out of memory.  That means, the %NULL return value
+ * signals out-of-memory only if @num_clusters was positive.
+ *
+ * Returns: the newly allocated array of text clusters that should be
+ *          freed using cairo_text_cluster_free()
+ *
+ * Since: 1.8
+ **/
+cairo_text_cluster_t *
+cairo_text_cluster_allocate (int num_clusters)
+{
+    if (num_clusters <= 0)
+	return NULL;
+
+    return _cairo_malloc_ab (num_clusters, sizeof (cairo_text_cluster_t));
+}
+slim_hidden_def (cairo_text_cluster_allocate);
+
+/**
+ * cairo_text_cluster_free:
+ * @clusters: array of text clusters to free, or %NULL
+ *
+ * Frees an array of #cairo_text_cluster's allocated using cairo_text_cluster_allocate().
+ * This function is only useful to free text cluster array returned
+ * by cairo_scaled_font_text_to_glyphs() where cairo returns
+ * an array of text clusters that the user will free.
+ * For all other uses, user can use their own allocation method
+ * for text clusters.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_text_cluster_free (cairo_text_cluster_t *clusters)
+{
+    free (clusters);
+}
+slim_hidden_def (cairo_text_cluster_free);
+
+
+/* Private stuff */
+
+/**
+ * _cairo_validate_text_clusters:
+ * @utf8: UTF-8 text
+ * @utf8_len: length of @utf8 in bytes
+ * @glyphs: array of glyphs
+ * @num_glyphs: number of glyphs
+ * @clusters: array of cluster mapping information
+ * @num_clusters: number of clusters in the mapping
+ * @cluster_flags: cluster flags
+ *
+ * Check that clusters cover the entire glyphs and utf8 arrays,
+ * and that cluster boundaries are UTF-8 boundaries.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS upon success, or
+ *               %CAIRO_STATUS_INVALID_CLUSTERS on error.
+ *               The error is either invalid UTF-8 input,
+ *               or bad cluster mapping.
+ **/
+cairo_status_t
+_cairo_validate_text_clusters (const char		   *utf8,
+			       int			    utf8_len,
+			       const cairo_glyph_t	   *glyphs,
+			       int			    num_glyphs,
+			       const cairo_text_cluster_t  *clusters,
+			       int			    num_clusters,
+			       cairo_text_cluster_flags_t   cluster_flags)
+{
+    cairo_status_t status;
+    unsigned int n_bytes  = 0;
+    unsigned int n_glyphs = 0;
+    int i;
+
+    for (i = 0; i < num_clusters; i++) {
+	int cluster_bytes  = clusters[i].num_bytes;
+	int cluster_glyphs = clusters[i].num_glyphs;
+
+	if (cluster_bytes < 0 || cluster_glyphs < 0)
+	    goto BAD;
+
+	/* A cluster should cover at least one character or glyph.
+	 * I can't see any use for a 0,0 cluster.
+	 * I can't see an immediate use for a zero-text cluster
+	 * right now either, but they don't harm.
+	 * Zero-glyph clusters on the other hand are useful for
+	 * things like U+200C ZERO WIDTH NON-JOINER */
+	if (cluster_bytes == 0 && cluster_glyphs == 0)
+	    goto BAD;
+
+	/* Since n_bytes and n_glyphs are unsigned, but the rest of
+	 * values involved are signed, we can detect overflow easily */
+	if (n_bytes+cluster_bytes > (unsigned int)utf8_len || n_glyphs+cluster_glyphs > (unsigned int)num_glyphs)
+	    goto BAD;
+
+	/* Make sure we've got valid UTF-8 for the cluster */
+	status = _cairo_utf8_to_ucs4 (utf8+n_bytes, cluster_bytes, NULL, NULL);
+	if (unlikely (status))
+	    return _cairo_error (CAIRO_STATUS_INVALID_CLUSTERS);
+
+	n_bytes  += cluster_bytes ;
+	n_glyphs += cluster_glyphs;
+    }
+
+    if (n_bytes != (unsigned int) utf8_len || n_glyphs != (unsigned int) num_glyphs) {
+      BAD:
+	return _cairo_error (CAIRO_STATUS_INVALID_CLUSTERS);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_operator_bounded_by_mask:
+ * @op: a #cairo_operator_t
+ *
+ * A bounded operator is one where mask pixel
+ * of zero results in no effect on the destination image.
+ *
+ * Unbounded operators often require special handling; if you, for
+ * example, draw trapezoids with an unbounded operator, the effect
+ * extends past the bounding box of the trapezoids.
+ *
+ * Return value: %TRUE if the operator is bounded by the mask operand
+ **/
+cairo_bool_t
+_cairo_operator_bounded_by_mask (cairo_operator_t op)
+{
+    switch (op) {
+    case CAIRO_OPERATOR_CLEAR:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_ATOP:
+    case CAIRO_OPERATOR_DEST:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_OUT:
+    case CAIRO_OPERATOR_XOR:
+    case CAIRO_OPERATOR_ADD:
+    case CAIRO_OPERATOR_SATURATE:
+    case CAIRO_OPERATOR_MULTIPLY:
+    case CAIRO_OPERATOR_SCREEN:
+    case CAIRO_OPERATOR_OVERLAY:
+    case CAIRO_OPERATOR_DARKEN:
+    case CAIRO_OPERATOR_LIGHTEN:
+    case CAIRO_OPERATOR_COLOR_DODGE:
+    case CAIRO_OPERATOR_COLOR_BURN:
+    case CAIRO_OPERATOR_HARD_LIGHT:
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+    case CAIRO_OPERATOR_DIFFERENCE:
+    case CAIRO_OPERATOR_EXCLUSION:
+    case CAIRO_OPERATOR_HSL_HUE:
+    case CAIRO_OPERATOR_HSL_SATURATION:
+    case CAIRO_OPERATOR_HSL_COLOR:
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return TRUE;
+    case CAIRO_OPERATOR_OUT:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_DEST_ATOP:
+	return FALSE;
+    }
+
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+/**
+ * _cairo_operator_bounded_by_source:
+ * @op: a #cairo_operator_t
+ *
+ * A bounded operator is one where source pixels of zero
+ * (in all four components, r, g, b and a) effect no change
+ * in the resulting destination image.
+ *
+ * Unbounded operators often require special handling; if you, for
+ * example, copy a surface with the SOURCE operator, the effect
+ * extends past the bounding box of the source surface.
+ *
+ * Return value: %TRUE if the operator is bounded by the source operand
+ **/
+cairo_bool_t
+_cairo_operator_bounded_by_source (cairo_operator_t op)
+{
+    switch (op) {
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_ATOP:
+    case CAIRO_OPERATOR_DEST:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_OUT:
+    case CAIRO_OPERATOR_XOR:
+    case CAIRO_OPERATOR_ADD:
+    case CAIRO_OPERATOR_SATURATE:
+    case CAIRO_OPERATOR_MULTIPLY:
+    case CAIRO_OPERATOR_SCREEN:
+    case CAIRO_OPERATOR_OVERLAY:
+    case CAIRO_OPERATOR_DARKEN:
+    case CAIRO_OPERATOR_LIGHTEN:
+    case CAIRO_OPERATOR_COLOR_DODGE:
+    case CAIRO_OPERATOR_COLOR_BURN:
+    case CAIRO_OPERATOR_HARD_LIGHT:
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+    case CAIRO_OPERATOR_DIFFERENCE:
+    case CAIRO_OPERATOR_EXCLUSION:
+    case CAIRO_OPERATOR_HSL_HUE:
+    case CAIRO_OPERATOR_HSL_SATURATION:
+    case CAIRO_OPERATOR_HSL_COLOR:
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return TRUE;
+    case CAIRO_OPERATOR_CLEAR:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_OUT:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_DEST_ATOP:
+	return FALSE;
+    }
+
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+uint32_t
+_cairo_operator_bounded_by_either (cairo_operator_t op)
+{
+    switch (op) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_ATOP:
+    case CAIRO_OPERATOR_DEST:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_OUT:
+    case CAIRO_OPERATOR_XOR:
+    case CAIRO_OPERATOR_ADD:
+    case CAIRO_OPERATOR_SATURATE:
+    case CAIRO_OPERATOR_MULTIPLY:
+    case CAIRO_OPERATOR_SCREEN:
+    case CAIRO_OPERATOR_OVERLAY:
+    case CAIRO_OPERATOR_DARKEN:
+    case CAIRO_OPERATOR_LIGHTEN:
+    case CAIRO_OPERATOR_COLOR_DODGE:
+    case CAIRO_OPERATOR_COLOR_BURN:
+    case CAIRO_OPERATOR_HARD_LIGHT:
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+    case CAIRO_OPERATOR_DIFFERENCE:
+    case CAIRO_OPERATOR_EXCLUSION:
+    case CAIRO_OPERATOR_HSL_HUE:
+    case CAIRO_OPERATOR_HSL_SATURATION:
+    case CAIRO_OPERATOR_HSL_COLOR:
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE;
+    case CAIRO_OPERATOR_CLEAR:
+    case CAIRO_OPERATOR_SOURCE:
+	return CAIRO_OPERATOR_BOUND_BY_MASK;
+    case CAIRO_OPERATOR_OUT:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_DEST_ATOP:
+	return 0;
+    }
+
+}
+
+#if DISABLE_SOME_FLOATING_POINT
+/* This function is identical to the C99 function lround(), except that it
+ * performs arithmetic rounding (floor(d + .5) instead of away-from-zero rounding) and
+ * has a valid input range of (INT_MIN, INT_MAX] instead of
+ * [INT_MIN, INT_MAX]. It is much faster on both x86 and FPU-less systems
+ * than other commonly used methods for rounding (lround, round, rint, lrint
+ * or float (d + 0.5)).
+ *
+ * The reason why this function is much faster on x86 than other
+ * methods is due to the fact that it avoids the fldcw instruction.
+ * This instruction incurs a large performance penalty on modern Intel
+ * processors due to how it prevents efficient instruction pipelining.
+ *
+ * The reason why this function is much faster on FPU-less systems is for
+ * an entirely different reason. All common rounding methods involve multiple
+ * floating-point operations. Each one of these operations has to be
+ * emulated in software, which adds up to be a large performance penalty.
+ * This function doesn't perform any floating-point calculations, and thus
+ * avoids this penalty.
+  */
+int
+_cairo_lround (double d)
+{
+    uint32_t top, shift_amount, output;
+    union {
+        double d;
+        uint64_t ui64;
+        uint32_t ui32[2];
+    } u;
+
+    u.d = d;
+
+    /* If the integer word order doesn't match the float word order, we swap
+     * the words of the input double. This is needed because we will be
+     * treating the whole double as a 64-bit unsigned integer. Notice that we
+     * use WORDS_BIGENDIAN to detect the integer word order, which isn't
+     * exactly correct because WORDS_BIGENDIAN refers to byte order, not word
+     * order. Thus, we are making the assumption that the byte order is the
+     * same as the integer word order which, on the modern machines that we
+     * care about, is OK.
+     */
+#if ( defined(FLOAT_WORDS_BIGENDIAN) && !defined(WORDS_BIGENDIAN)) || \
+    (!defined(FLOAT_WORDS_BIGENDIAN) &&  defined(WORDS_BIGENDIAN))
+    {
+        uint32_t temp = u.ui32[0];
+        u.ui32[0] = u.ui32[1];
+        u.ui32[1] = temp;
+    }
+#endif
+
+#ifdef WORDS_BIGENDIAN
+    #define MSW (0) /* Most Significant Word */
+    #define LSW (1) /* Least Significant Word */
+#else
+    #define MSW (1)
+    #define LSW (0)
+#endif
+
+    /* By shifting the most significant word of the input double to the
+     * right 20 places, we get the very "top" of the double where the exponent
+     * and sign bit lie.
+     */
+    top = u.ui32[MSW] >> 20;
+
+    /* Here, we calculate how much we have to shift the mantissa to normalize
+     * it to an integer value. We extract the exponent "top" by masking out the
+     * sign bit, then we calculate the shift amount by subtracting the exponent
+     * from the bias. Notice that the correct bias for 64-bit doubles is
+     * actually 1075, but we use 1053 instead for two reasons:
+     *
+     *  1) To perform rounding later on, we will first need the target
+     *     value in a 31.1 fixed-point format. Thus, the bias needs to be one
+     *     less: (1075 - 1: 1074).
+     *
+     *  2) To avoid shifting the mantissa as a full 64-bit integer (which is
+     *     costly on certain architectures), we break the shift into two parts.
+     *     First, the upper and lower parts of the mantissa are shifted
+     *     individually by a constant amount that all valid inputs will require
+     *     at the very least. This amount is chosen to be 21, because this will
+     *     allow the two parts of the mantissa to later be combined into a
+     *     single 32-bit representation, on which the remainder of the shift
+     *     will be performed. Thus, we decrease the bias by an additional 21:
+     *     (1074 - 21: 1053).
+     */
+    shift_amount = 1053 - (top & 0x7FF);
+
+    /* We are done with the exponent portion in "top", so here we shift it off
+     * the end.
+     */
+    top >>= 11;
+
+    /* Before we perform any operations on the mantissa, we need to OR in
+     * the implicit 1 at the top (see the IEEE-754 spec). We needn't mask
+     * off the sign bit nor the exponent bits because these higher bits won't
+     * make a bit of difference in the rest of our calculations.
+     */
+    u.ui32[MSW] |= 0x100000;
+
+    /* If the input double is negative, we have to decrease the mantissa
+     * by a hair. This is an important part of performing arithmetic rounding,
+     * as negative numbers must round towards positive infinity in the
+     * halfwase case of -x.5. Since "top" contains only the sign bit at this
+     * point, we can just decrease the mantissa by the value of "top".
+     */
+    u.ui64 -= top;
+
+    /* By decrementing "top", we create a bitmask with a value of either
+     * 0x0 (if the input was negative) or 0xFFFFFFFF (if the input was positive
+     * and thus the unsigned subtraction underflowed) that we'll use later.
+     */
+    top--;
+
+    /* Here, we shift the mantissa by the constant value as described above.
+     * We can emulate a 64-bit shift right by 21 through shifting the top 32
+     * bits left 11 places and ORing in the bottom 32 bits shifted 21 places
+     * to the right. Both parts of the mantissa are now packed into a single
+     * 32-bit integer. Although we severely truncate the lower part in the
+     * process, we still have enough significant bits to perform the conversion
+     * without error (for all valid inputs).
+     */
+    output = (u.ui32[MSW] << 11) | (u.ui32[LSW] >> 21);
+
+    /* Next, we perform the shift that converts the X.Y fixed-point number
+     * currently found in "output" to the desired 31.1 fixed-point format
+     * needed for the following rounding step. It is important to consider
+     * all possible values for "shift_amount" at this point:
+     *
+     * - {shift_amount < 0} Since shift_amount is an unsigned integer, it
+     *   really can't have a value less than zero. But, if the shift_amount
+     *   calculation above caused underflow (which would happen with
+     *   input > INT_MAX or input <= INT_MIN) then shift_amount will now be
+     *   a very large number, and so this shift will result in complete
+     *   garbage. But that's OK, as the input was out of our range, so our
+     *   output is undefined.
+     *
+     * - {shift_amount > 31} If the magnitude of the input was very small
+     *   (i.e. |input| << 1.0), shift_amount will have a value greater than
+     *   31. Thus, this shift will also result in garbage. After performing
+     *   the shift, we will zero-out "output" if this is the case.
+     *
+     * - {0 <= shift_amount < 32} In this case, the shift will properly convert
+     *   the mantissa into a 31.1 fixed-point number.
+     */
+    output >>= shift_amount;
+
+    /* This is where we perform rounding with the 31.1 fixed-point number.
+     * Since what we're after is arithmetic rounding, we simply add the single
+     * fractional bit into the integer part of "output", and just keep the
+     * integer part.
+     */
+    output = (output >> 1) + (output & 1);
+
+    /* Here, we zero-out the result if the magnitude if the input was very small
+     * (as explained in the section above). Notice that all input out of the
+     * valid range is also caught by this condition, which means we produce 0
+     * for all invalid input, which is a nice side effect.
+     *
+     * The most straightforward way to do this would be:
+     *
+     *      if (shift_amount > 31)
+     *          output = 0;
+     *
+     * But we can use a little trick to avoid the potential branch. The
+     * expression (shift_amount > 31) will be either 1 or 0, which when
+     * decremented will be either 0x0 or 0xFFFFFFFF (unsigned underflow),
+     * which can be used to conditionally mask away all the bits in "output"
+     * (in the 0x0 case), effectively zeroing it out. Certain, compilers would
+     * have done this for us automatically.
+     */
+    output &= ((shift_amount > 31) - 1);
+
+    /* If the input double was a negative number, then we have to negate our
+     * output. The most straightforward way to do this would be:
+     *
+     *      if (!top)
+     *          output = -output;
+     *
+     * as "top" at this point is either 0x0 (if the input was negative) or
+     * 0xFFFFFFFF (if the input was positive). But, we can use a trick to
+     * avoid the branch. Observe that the following snippet of code has the
+     * same effect as the reference snippet above:
+     *
+     *      if (!top)
+     *          output = 0 - output;
+     *      else
+     *          output = output - 0;
+     *
+     * Armed with the bitmask found in "top", we can condense the two statements
+     * into the following:
+     *
+     *      output = (output & top) - (output & ~top);
+     *
+     * where, in the case that the input double was negative, "top" will be 0,
+     * and the statement will be equivalent to:
+     *
+     *      output = (0) - (output);
+     *
+     * and if the input double was positive, "top" will be 0xFFFFFFFF, and the
+     * statement will be equivalent to:
+     *
+     *      output = (output) - (0);
+     *
+     * Which, as pointed out earlier, is equivalent to the original reference
+     * snippet.
+     */
+    output = (output & top) - (output & ~top);
+
+    return output;
+#undef MSW
+#undef LSW
+}
+#endif
+
+/* Convert a 32-bit IEEE single precision floating point number to a
+ * 'half' representation (s10.5)
+ */
+uint16_t
+_cairo_half_from_float (float f)
+{
+    union {
+	uint32_t ui;
+	float f;
+    } u;
+    int s, e, m;
+
+    u.f = f;
+    s =  (u.ui >> 16) & 0x00008000;
+    e = ((u.ui >> 23) & 0x000000ff) - (127 - 15);
+    m =   u.ui        & 0x007fffff;
+    if (e <= 0) {
+	if (e < -10) {
+	    /* underflow */
+	    return 0;
+	}
+
+	m = (m | 0x00800000) >> (1 - e);
+
+	/* round to nearest, round 0.5 up. */
+	if (m &  0x00001000)
+	    m += 0x00002000;
+	return s | (m >> 13);
+    } else if (e == 0xff - (127 - 15)) {
+	if (m == 0) {
+	    /* infinity */
+	    return s | 0x7c00;
+	} else {
+	    /* nan */
+	    m >>= 13;
+	    return s | 0x7c00 | m | (m == 0);
+	}
+    } else {
+	/* round to nearest, round 0.5 up. */
+	if (m &  0x00001000) {
+	    m += 0x00002000;
+
+	    if (m & 0x00800000) {
+		m =  0;
+		e += 1;
+	    }
+	}
+
+	if (e > 30) {
+	    /* overflow -> infinity */
+	    return s | 0x7c00;
+	}
+
+	return s | (e << 10) | (m >> 13);
+    }
+}
+
+#ifndef __BIONIC__
+# include <locale.h>
+
+const char *
+_cairo_get_locale_decimal_point (void)
+{
+    struct lconv *locale_data = localeconv ();
+    return locale_data->decimal_point;
+}
+
+#else
+/* Android's Bionic libc doesn't provide decimal_point */
+const char *
+_cairo_get_locale_decimal_point (void)
+{
+    return ".";
+}
+#endif
+
+#if defined (HAVE_NEWLOCALE) && defined (HAVE_STRTOD_L)
+
+static locale_t C_locale;
+
+static locale_t
+get_C_locale (void)
+{
+    locale_t C;
+
+retry:
+    C = (locale_t) _cairo_atomic_ptr_get ((void **) &C_locale);
+
+    if (unlikely (!C)) {
+        C = newlocale (LC_ALL_MASK, "C", NULL);
+
+        if (!_cairo_atomic_ptr_cmpxchg ((void **) &C_locale, NULL, C)) {
+            freelocale (C_locale);
+            goto retry;
+        }
+    }
+
+    return C;
+}
+
+double
+_cairo_strtod (const char *nptr, char **endptr)
+{
+    return strtod_l (nptr, endptr, get_C_locale ());
+}
+
+#else
+
+/* strtod replacement that ignores locale and only accepts decimal points */
+double
+_cairo_strtod (const char *nptr, char **endptr)
+{
+    const char *decimal_point;
+    int decimal_point_len;
+    const char *p;
+    char buf[100];
+    char *bufptr;
+    char *bufend = buf + sizeof(buf) - 1;
+    double value;
+    char *end;
+    int delta;
+    cairo_bool_t have_dp;
+
+    decimal_point = _cairo_get_locale_decimal_point ();
+    decimal_point_len = strlen (decimal_point);
+    assert (decimal_point_len != 0);
+
+    p = nptr;
+    bufptr = buf;
+    delta = 0;
+    have_dp = FALSE;
+    while (*p && _cairo_isspace (*p)) {
+	p++;
+	delta++;
+    }
+
+    while (*p && (bufptr + decimal_point_len < bufend)) {
+	if (_cairo_isdigit (*p)) {
+	    *bufptr++ = *p;
+	} else if (*p == '.') {
+	    if (have_dp)
+		break;
+	    strncpy (bufptr, decimal_point, decimal_point_len);
+	    bufptr += decimal_point_len;
+	    delta -= decimal_point_len - 1;
+	    have_dp = TRUE;
+	} else {
+	    break;
+	}
+	p++;
+    }
+    *bufptr = 0;
+
+    value = strtod (buf, &end);
+    if (endptr) {
+	if (end == buf)
+	    *endptr = (char*)(nptr);
+	else
+	    *endptr = (char*)(nptr + (end - buf) + delta);
+    }
+
+    return value;
+}
+#endif
+
+/**
+ * _cairo_fopen:
+ * @filename: filename to open
+ * @mode: mode string with which to open the file
+ * @file_out: reference to file handle
+ *
+ * Exactly like the C library function, but possibly doing encoding
+ * conversion on the filename. On all platforms, the filename is
+ * passed directly to the system, but on Windows, the filename is
+ * interpreted as UTF-8, rather than in a codepage that would depend
+ * on system settings.
+ *
+ * Return value: CAIRO_STATUS_SUCCESS when the filename was converted
+ * successfully to the native encoding, or the error reported by
+ * _cairo_utf8_to_utf16 otherwise. To check if the file handle could
+ * be obtained, dereference file_out and compare its value against
+ * NULL
+ **/
+cairo_status_t
+_cairo_fopen (const char *filename, const char *mode, FILE **file_out)
+{
+    FILE *result;
+#ifdef _WIN32 /* also defined on x86_64 */
+    uint16_t *filename_w;
+    uint16_t *mode_w;
+    cairo_status_t status;
+
+    *file_out = NULL;
+
+    if (filename == NULL || mode == NULL) {
+	errno = EINVAL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if ((status = _cairo_utf8_to_utf16 (filename, -1, &filename_w, NULL)) != CAIRO_STATUS_SUCCESS) {
+	errno = EINVAL;
+	return status;
+    }
+
+    if ((status = _cairo_utf8_to_utf16 (mode, -1, &mode_w, NULL)) != CAIRO_STATUS_SUCCESS) {
+	free (filename_w);
+	errno = EINVAL;
+	return status;
+    }
+
+    result = _wfopen(filename_w, mode_w);
+
+    free (filename_w);
+    free (mode_w);
+
+#else /* Use fopen directly */
+    result = fopen (filename, mode);
+#endif
+
+    *file_out = result;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#ifdef _WIN32
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include <windows.h>
+#include <io.h>
+
+#if !_WIN32_WCE
+/* tmpfile() replacement for Windows.
+ *
+ * On Windows tmpfile() creates the file in the root directory. This
+ * may fail due to unsufficient privileges. However, this isn't a
+ * problem on Windows CE so we don't use it there.
+ */
+FILE *
+_cairo_win32_tmpfile (void)
+{
+    DWORD path_len;
+    WCHAR path_name[MAX_PATH + 1];
+    WCHAR file_name[MAX_PATH + 1];
+    HANDLE handle;
+    int fd;
+    FILE *fp;
+
+    path_len = GetTempPathW (MAX_PATH, path_name);
+    if (path_len <= 0 || path_len >= MAX_PATH)
+	return NULL;
+
+    if (GetTempFileNameW (path_name, L"ps_", 0, file_name) == 0)
+	return NULL;
+
+    handle = CreateFileW (file_name,
+			 GENERIC_READ | GENERIC_WRITE,
+			 0,
+			 NULL,
+			 CREATE_ALWAYS,
+			 FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE,
+			 NULL);
+    if (handle == INVALID_HANDLE_VALUE) {
+	DeleteFileW (file_name);
+	return NULL;
+    }
+
+    fd = _open_osfhandle((intptr_t) handle, 0);
+    if (fd < 0) {
+	CloseHandle (handle);
+	return NULL;
+    }
+
+    fp = fdopen(fd, "w+b");
+    if (fp == NULL) {
+	_close(fd);
+	return NULL;
+    }
+
+    return fp;
+}
+#endif /* !_WIN32_WCE */
+
+#endif /* _WIN32 */
+
+typedef struct _cairo_intern_string {
+    cairo_hash_entry_t hash_entry;
+    int len;
+    char *string;
+} cairo_intern_string_t;
+
+static cairo_hash_table_t *_cairo_intern_string_ht;
+
+unsigned long
+_cairo_string_hash (const char *str, int len)
+{
+    const signed char *p = (const signed char *) str;
+    unsigned int h = *p;
+
+    for (p += 1; len > 0; len--, p++)
+	h = (h << 5) - h + *p;
+
+    return h;
+}
+
+static cairo_bool_t
+_intern_string_equal (const void *_a, const void *_b)
+{
+    const cairo_intern_string_t *a = _a;
+    const cairo_intern_string_t *b = _b;
+
+    if (a->len != b->len)
+	return FALSE;
+
+    return memcmp (a->string, b->string, a->len) == 0;
+}
+
+cairo_status_t
+_cairo_intern_string (const char **str_inout, int len)
+{
+    char *str = (char *) *str_inout;
+    cairo_intern_string_t tmpl, *istring;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (len < 0)
+	len = strlen (str);
+    tmpl.hash_entry.hash = _cairo_string_hash (str, len);
+    tmpl.len = len;
+    tmpl.string = (char *) str;
+
+    CAIRO_MUTEX_LOCK (_cairo_intern_string_mutex);
+    if (_cairo_intern_string_ht == NULL) {
+	_cairo_intern_string_ht = _cairo_hash_table_create (_intern_string_equal);
+	if (unlikely (_cairo_intern_string_ht == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto BAIL;
+	}
+    }
+
+    istring = _cairo_hash_table_lookup (_cairo_intern_string_ht,
+					&tmpl.hash_entry);
+    if (istring == NULL) {
+	istring = _cairo_malloc (sizeof (cairo_intern_string_t) + len + 1);
+	if (likely (istring != NULL)) {
+	    istring->hash_entry.hash = tmpl.hash_entry.hash;
+	    istring->len = tmpl.len;
+	    istring->string = (char *) (istring + 1);
+	    memcpy (istring->string, str, len);
+	    istring->string[len] = '\0';
+
+	    status = _cairo_hash_table_insert (_cairo_intern_string_ht,
+					       &istring->hash_entry);
+	    if (unlikely (status)) {
+		free (istring);
+		goto BAIL;
+	    }
+	} else {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto BAIL;
+	}
+    }
+
+    *str_inout = istring->string;
+
+  BAIL:
+    CAIRO_MUTEX_UNLOCK (_cairo_intern_string_mutex);
+    return status;
+}
+
+static void
+_intern_string_pluck (void *entry, void *closure)
+{
+    _cairo_hash_table_remove (closure, entry);
+    free (entry);
+}
+
+void
+_cairo_intern_string_reset_static_data (void)
+{
+    CAIRO_MUTEX_LOCK (_cairo_intern_string_mutex);
+    if (_cairo_intern_string_ht != NULL) {
+	_cairo_hash_table_foreach (_cairo_intern_string_ht,
+				   _intern_string_pluck,
+				   _cairo_intern_string_ht);
+	_cairo_hash_table_destroy(_cairo_intern_string_ht);
+	_cairo_intern_string_ht = NULL;
+    }
+    CAIRO_MUTEX_UNLOCK (_cairo_intern_string_mutex);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-mono-scan-converter.c b/libs/cairo-1.16.0/src/cairo-mono-scan-converter.c
new file mode 100644
index 0000000..891f435
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mono-scan-converter.c
@@ -0,0 +1,612 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/*
+ * Copyright (c) 2011  Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "cairoint.h"
+#include "cairo-spans-private.h"
+#include "cairo-error-private.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+struct quorem {
+    int32_t quo;
+    int32_t rem;
+};
+
+struct edge {
+    struct edge *next, *prev;
+
+    int32_t height_left;
+    int32_t dir;
+    int32_t vertical;
+
+    int32_t dy;
+    struct quorem x;
+    struct quorem dxdy;
+};
+
+/* A collection of sorted and vertically clipped edges of the polygon.
+ * Edges are moved from the polygon to an active list while scan
+ * converting. */
+struct polygon {
+    /* The vertical clip extents. */
+    int32_t ymin, ymax;
+
+    int num_edges;
+    struct edge *edges;
+
+    /* Array of edges all starting in the same bucket.	An edge is put
+     * into bucket EDGE_BUCKET_INDEX(edge->ytop, polygon->ymin) when
+     * it is added to the polygon. */
+    struct edge **y_buckets;
+
+    struct edge *y_buckets_embedded[64];
+    struct edge edges_embedded[32];
+};
+
+struct mono_scan_converter {
+    struct polygon polygon[1];
+
+    /* Leftmost edge on the current scan line. */
+    struct edge head, tail;
+    int is_vertical;
+
+    cairo_half_open_span_t *spans;
+    cairo_half_open_span_t spans_embedded[64];
+    int num_spans;
+
+    /* Clip box. */
+    int32_t xmin, xmax;
+    int32_t ymin, ymax;
+};
+
+#define I(x) _cairo_fixed_integer_round_down(x)
+
+/* Compute the floored division a/b. Assumes / and % perform symmetric
+ * division. */
+inline static struct quorem
+floored_divrem(int a, int b)
+{
+    struct quorem qr;
+    qr.quo = a/b;
+    qr.rem = a%b;
+    if ((a^b)<0 && qr.rem) {
+	qr.quo -= 1;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+/* Compute the floored division (x*a)/b. Assumes / and % perform symmetric
+ * division. */
+static struct quorem
+floored_muldivrem(int x, int a, int b)
+{
+    struct quorem qr;
+    long long xa = (long long)x*a;
+    qr.quo = xa/b;
+    qr.rem = xa%b;
+    if ((xa>=0) != (b>=0) && qr.rem) {
+	qr.quo -= 1;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+static cairo_status_t
+polygon_init (struct polygon *polygon, int ymin, int ymax)
+{
+    unsigned h = ymax - ymin + 1;
+
+    polygon->y_buckets = polygon->y_buckets_embedded;
+    if (h > ARRAY_LENGTH (polygon->y_buckets_embedded)) {
+	polygon->y_buckets = _cairo_malloc_ab (h, sizeof (struct edge *));
+	if (unlikely (NULL == polygon->y_buckets))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+    memset (polygon->y_buckets, 0, h * sizeof (struct edge *));
+    polygon->y_buckets[h-1] = (void *)-1;
+
+    polygon->ymin = ymin;
+    polygon->ymax = ymax;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+polygon_fini (struct polygon *polygon)
+{
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    if (polygon->edges != polygon->edges_embedded)
+	free (polygon->edges);
+}
+
+static void
+_polygon_insert_edge_into_its_y_bucket(struct polygon *polygon,
+				       struct edge *e,
+				       int y)
+{
+    struct edge **ptail = &polygon->y_buckets[y - polygon->ymin];
+    if (*ptail)
+	(*ptail)->prev = e;
+    e->next = *ptail;
+    e->prev = NULL;
+    *ptail = e;
+}
+
+inline static void
+polygon_add_edge (struct polygon *polygon,
+		  const cairo_edge_t *edge)
+{
+    struct edge *e;
+    cairo_fixed_t dx;
+    cairo_fixed_t dy;
+    int y, ytop, ybot;
+    int ymin = polygon->ymin;
+    int ymax = polygon->ymax;
+
+    y = I(edge->top);
+    ytop = MAX(y, ymin);
+
+    y = I(edge->bottom);
+    ybot = MIN(y, ymax);
+
+    if (ybot <= ytop)
+	return;
+
+    e = polygon->edges + polygon->num_edges++;
+    e->height_left = ybot - ytop;
+    e->dir = edge->dir;
+
+    dx = edge->line.p2.x - edge->line.p1.x;
+    dy = edge->line.p2.y - edge->line.p1.y;
+
+    if (dx == 0) {
+	e->vertical = TRUE;
+	e->x.quo = edge->line.p1.x;
+	e->x.rem = 0;
+	e->dxdy.quo = 0;
+	e->dxdy.rem = 0;
+	e->dy = 0;
+    } else {
+	e->vertical = FALSE;
+	e->dxdy = floored_muldivrem (dx, CAIRO_FIXED_ONE, dy);
+	e->dy = dy;
+
+	e->x = floored_muldivrem (ytop * CAIRO_FIXED_ONE + CAIRO_FIXED_FRAC_MASK/2 - edge->line.p1.y,
+				  dx, dy);
+	e->x.quo += edge->line.p1.x;
+    }
+    e->x.rem -= dy;
+
+    _polygon_insert_edge_into_its_y_bucket (polygon, e, ytop);
+}
+
+static struct edge *
+merge_sorted_edges (struct edge *head_a, struct edge *head_b)
+{
+    struct edge *head, **next, *prev;
+    int32_t x;
+
+    prev = head_a->prev;
+    next = &head;
+    if (head_a->x.quo <= head_b->x.quo) {
+	head = head_a;
+    } else {
+	head = head_b;
+	head_b->prev = prev;
+	goto start_with_b;
+    }
+
+    do {
+	x = head_b->x.quo;
+	while (head_a != NULL && head_a->x.quo <= x) {
+	    prev = head_a;
+	    next = &head_a->next;
+	    head_a = head_a->next;
+	}
+
+	head_b->prev = prev;
+	*next = head_b;
+	if (head_a == NULL)
+	    return head;
+
+start_with_b:
+	x = head_a->x.quo;
+	while (head_b != NULL && head_b->x.quo <= x) {
+	    prev = head_b;
+	    next = &head_b->next;
+	    head_b = head_b->next;
+	}
+
+	head_a->prev = prev;
+	*next = head_a;
+	if (head_b == NULL)
+	    return head;
+    } while (1);
+}
+
+static struct edge *
+sort_edges (struct edge *list,
+	    unsigned int level,
+	    struct edge **head_out)
+{
+    struct edge *head_other, *remaining;
+    unsigned int i;
+
+    head_other = list->next;
+
+    if (head_other == NULL) {
+	*head_out = list;
+	return NULL;
+    }
+
+    remaining = head_other->next;
+    if (list->x.quo <= head_other->x.quo) {
+	*head_out = list;
+	head_other->next = NULL;
+    } else {
+	*head_out = head_other;
+	head_other->prev = list->prev;
+	head_other->next = list;
+	list->prev = head_other;
+	list->next = NULL;
+    }
+
+    for (i = 0; i < level && remaining; i++) {
+	remaining = sort_edges (remaining, i, &head_other);
+	*head_out = merge_sorted_edges (*head_out, head_other);
+    }
+
+    return remaining;
+}
+
+static struct edge *
+merge_unsorted_edges (struct edge *head, struct edge *unsorted)
+{
+    sort_edges (unsorted, UINT_MAX, &unsorted);
+    return merge_sorted_edges (head, unsorted);
+}
+
+inline static void
+active_list_merge_edges (struct mono_scan_converter *c, struct edge *edges)
+{
+    struct edge *e;
+
+    for (e = edges; c->is_vertical && e; e = e->next)
+	c->is_vertical = e->vertical;
+
+    c->head.next = merge_unsorted_edges (c->head.next, edges);
+}
+
+inline static void
+add_span (struct mono_scan_converter *c, int x1, int x2)
+{
+    int n;
+
+    if (x1 < c->xmin)
+	x1 = c->xmin;
+    if (x2 > c->xmax)
+	x2 = c->xmax;
+    if (x2 <= x1)
+	return;
+
+    n = c->num_spans++;
+    c->spans[n].x = x1;
+    c->spans[n].coverage = 255;
+
+    n = c->num_spans++;
+    c->spans[n].x = x2;
+    c->spans[n].coverage = 0;
+}
+
+inline static void
+row (struct mono_scan_converter *c, unsigned int mask)
+{
+    struct edge *edge = c->head.next;
+    int xstart = INT_MIN, prev_x = INT_MIN;
+    int winding = 0;
+
+    c->num_spans = 0;
+    while (&c->tail != edge) {
+	struct edge *next = edge->next;
+	int xend = I(edge->x.quo);
+
+	if (--edge->height_left) {
+	    if (!edge->vertical) {
+		edge->x.quo += edge->dxdy.quo;
+		edge->x.rem += edge->dxdy.rem;
+		if (edge->x.rem >= 0) {
+		    ++edge->x.quo;
+		    edge->x.rem -= edge->dy;
+		}
+	    }
+
+	    if (edge->x.quo < prev_x) {
+		struct edge *pos = edge->prev;
+		pos->next = next;
+		next->prev = pos;
+		do {
+		    pos = pos->prev;
+		} while (edge->x.quo < pos->x.quo);
+		pos->next->prev = edge;
+		edge->next = pos->next;
+		edge->prev = pos;
+		pos->next = edge;
+	    } else
+		prev_x = edge->x.quo;
+	} else {
+	    edge->prev->next = next;
+	    next->prev = edge->prev;
+	}
+
+	winding += edge->dir;
+	if ((winding & mask) == 0) {
+	    if (I(next->x.quo) > xend + 1) {
+		add_span (c, xstart, xend);
+		xstart = INT_MIN;
+	    }
+	} else if (xstart == INT_MIN)
+	    xstart = xend;
+
+	edge = next;
+    }
+}
+
+inline static void dec (struct edge *e, int h)
+{
+    e->height_left -= h;
+    if (e->height_left == 0) {
+	e->prev->next = e->next;
+	e->next->prev = e->prev;
+    }
+}
+
+static cairo_status_t
+_mono_scan_converter_init(struct mono_scan_converter *c,
+			  int xmin, int ymin,
+			  int xmax, int ymax)
+{
+    cairo_status_t status;
+    int max_num_spans;
+
+    status = polygon_init (c->polygon, ymin, ymax);
+    if  (unlikely (status))
+	return status;
+
+    max_num_spans = xmax - xmin + 1;
+    if (max_num_spans > ARRAY_LENGTH(c->spans_embedded)) {
+	c->spans = _cairo_malloc_ab (max_num_spans,
+				     sizeof (cairo_half_open_span_t));
+	if (unlikely (c->spans == NULL)) {
+	    polygon_fini (c->polygon);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    } else
+	c->spans = c->spans_embedded;
+
+    c->xmin = xmin;
+    c->xmax = xmax;
+    c->ymin = ymin;
+    c->ymax = ymax;
+
+    c->head.vertical = 1;
+    c->head.height_left = INT_MAX;
+    c->head.x.quo = _cairo_fixed_from_int (_cairo_fixed_integer_part (INT_MIN));
+    c->head.prev = NULL;
+    c->head.next = &c->tail;
+    c->tail.prev = &c->head;
+    c->tail.next = NULL;
+    c->tail.x.quo = _cairo_fixed_from_int (_cairo_fixed_integer_part (INT_MAX));
+    c->tail.height_left = INT_MAX;
+    c->tail.vertical = 1;
+
+    c->is_vertical = 1;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_mono_scan_converter_fini(struct mono_scan_converter *self)
+{
+    if (self->spans != self->spans_embedded)
+	free (self->spans);
+
+    polygon_fini(self->polygon);
+}
+
+static cairo_status_t
+mono_scan_converter_allocate_edges(struct mono_scan_converter *c,
+				   int num_edges)
+
+{
+    c->polygon->num_edges = 0;
+    c->polygon->edges = c->polygon->edges_embedded;
+    if (num_edges > ARRAY_LENGTH (c->polygon->edges_embedded)) {
+	c->polygon->edges = _cairo_malloc_ab (num_edges, sizeof (struct edge));
+	if (unlikely (c->polygon->edges == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+mono_scan_converter_add_edge (struct mono_scan_converter *c,
+			      const cairo_edge_t *edge)
+{
+    polygon_add_edge (c->polygon, edge);
+}
+
+static void
+step_edges (struct mono_scan_converter *c, int count)
+{
+    struct edge *edge;
+
+    for (edge = c->head.next; edge != &c->tail; edge = edge->next) {
+	edge->height_left -= count;
+	if (! edge->height_left) {
+	    edge->prev->next = edge->next;
+	    edge->next->prev = edge->prev;
+	}
+    }
+}
+
+static cairo_status_t
+mono_scan_converter_render(struct mono_scan_converter *c,
+			   unsigned int winding_mask,
+			   cairo_span_renderer_t *renderer)
+{
+    struct polygon *polygon = c->polygon;
+    int i, j, h = c->ymax - c->ymin;
+    cairo_status_t status;
+
+    for (i = 0; i < h; i = j) {
+	j = i + 1;
+
+	if (polygon->y_buckets[i])
+	    active_list_merge_edges (c, polygon->y_buckets[i]);
+
+	if (c->is_vertical) {
+	    int min_height;
+	    struct edge *e;
+
+	    e = c->head.next;
+	    min_height = e->height_left;
+	    while (e != &c->tail) {
+		if (e->height_left < min_height)
+		    min_height = e->height_left;
+		e = e->next;
+	    }
+
+	    while (--min_height >= 1 && polygon->y_buckets[j] == NULL)
+		j++;
+	    if (j != i + 1)
+		step_edges (c, j - (i + 1));
+	}
+
+	row (c, winding_mask);
+	if (c->num_spans) {
+	    status = renderer->render_rows (renderer, c->ymin+i, j-i,
+					    c->spans, c->num_spans);
+	    if (unlikely (status))
+		return status;
+	}
+
+	/* XXX recompute after dropping edges? */
+	if (c->head.next == &c->tail)
+	    c->is_vertical = 1;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct _cairo_mono_scan_converter {
+    cairo_scan_converter_t base;
+
+    struct mono_scan_converter converter[1];
+    cairo_fill_rule_t fill_rule;
+};
+
+typedef struct _cairo_mono_scan_converter cairo_mono_scan_converter_t;
+
+static void
+_cairo_mono_scan_converter_destroy (void *converter)
+{
+    cairo_mono_scan_converter_t *self = converter;
+    _mono_scan_converter_fini (self->converter);
+    free(self);
+}
+
+cairo_status_t
+_cairo_mono_scan_converter_add_polygon (void		*converter,
+				       const cairo_polygon_t *polygon)
+{
+    cairo_mono_scan_converter_t *self = converter;
+    cairo_status_t status;
+    int i;
+
+#if 0
+    FILE *file = fopen ("polygon.txt", "w");
+    _cairo_debug_print_polygon (file, polygon);
+    fclose (file);
+#endif
+
+    status = mono_scan_converter_allocate_edges (self->converter,
+						 polygon->num_edges);
+    if (unlikely (status))
+	return status;
+
+    for (i = 0; i < polygon->num_edges; i++)
+	 mono_scan_converter_add_edge (self->converter, &polygon->edges[i]);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_mono_scan_converter_generate (void			*converter,
+				    cairo_span_renderer_t	*renderer)
+{
+    cairo_mono_scan_converter_t *self = converter;
+
+    return mono_scan_converter_render (self->converter,
+				       self->fill_rule == CAIRO_FILL_RULE_WINDING ? ~0 : 1,
+				       renderer);
+}
+
+cairo_scan_converter_t *
+_cairo_mono_scan_converter_create (int			xmin,
+				  int			ymin,
+				  int			xmax,
+				  int			ymax,
+				  cairo_fill_rule_t	fill_rule)
+{
+    cairo_mono_scan_converter_t *self;
+    cairo_status_t status;
+
+    self = _cairo_malloc (sizeof(struct _cairo_mono_scan_converter));
+    if (unlikely (self == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto bail_nomem;
+    }
+
+    self->base.destroy = _cairo_mono_scan_converter_destroy;
+    self->base.generate = _cairo_mono_scan_converter_generate;
+
+    status = _mono_scan_converter_init (self->converter,
+					xmin, ymin, xmax, ymax);
+    if (unlikely (status))
+	goto bail;
+
+    self->fill_rule = fill_rule;
+
+    return &self->base;
+
+ bail:
+    self->base.destroy(&self->base);
+ bail_nomem:
+    return _cairo_scan_converter_create_in_error (status);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-mutex-impl-private.h b/libs/cairo-1.16.0/src/cairo-mutex-impl-private.h
new file mode 100644
index 0000000..25223f3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mutex-impl-private.h
@@ -0,0 +1,278 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005,2007 Red Hat, Inc.
+ * Copyright © 2007 Mathias Hasselmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Mathias Hasselmann <mathias.hasselmann@gmx.de>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#ifndef CAIRO_MUTEX_IMPL_PRIVATE_H
+#define CAIRO_MUTEX_IMPL_PRIVATE_H
+
+#include "cairo.h"
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if HAVE_LOCKDEP
+#include <lockdep.h>
+#endif
+
+/* A fully qualified no-operation statement */
+#define CAIRO_MUTEX_IMPL_NOOP	do {/*no-op*/} while (0)
+/* And one that evaluates its argument once */
+#define CAIRO_MUTEX_IMPL_NOOP1(expr)        do { (void)(expr); } while (0)
+/* Note: 'if (expr) {}' is an alternative to '(void)(expr);' that will 'use' the
+ * result of __attribute__((warn_used_result)) functions. */
+
+/* Cairo mutex implementation:
+ *
+ * Any new mutex implementation needs to do the following:
+ *
+ * - Condition on the right header or feature.  Headers are
+ *   preferred as eg. you still can use win32 mutex implementation
+ *   on a win32 system even if you do not compile the win32
+ *   surface/backend.
+ *
+ * - typedef #cairo_mutex_impl_t to the proper mutex type on your target
+ *   system.  Note that you may or may not need to use a pointer,
+ *   depending on what kinds of initialization your mutex
+ *   implementation supports.  No trailing semicolon needed.
+ *   You should be able to compile the following snippet (don't try
+ *   running it):
+ *
+ *   <programlisting>
+ *	cairo_mutex_impl_t _cairo_some_mutex;
+ *   </programlisting>
+ *
+ * - #define %CAIRO_MUTEX_IMPL_<NAME> 1 with suitable name for your platform.  You
+ *   can later use this symbol in cairo-system.c.
+ *
+ * - #define CAIRO_MUTEX_IMPL_LOCK(mutex) and CAIRO_MUTEX_IMPL_UNLOCK(mutex) to
+ *   proper statement to lock/unlock the mutex object passed in.
+ *   You can (and should) assume that the mutex is already
+ *   initialized, and is-not-already-locked/is-locked,
+ *   respectively.  Use the "do { ... } while (0)" idiom if necessary.
+ *   No trailing semicolons are needed (in any macro you define here).
+ *   You should be able to compile the following snippet:
+ *
+ *   <programlisting>
+ *	cairo_mutex_impl_t _cairo_some_mutex;
+ *
+ *      if (1)
+ *          CAIRO_MUTEX_IMPL_LOCK (_cairo_some_mutex);
+ *      else
+ *          CAIRO_MUTEX_IMPL_UNLOCK (_cairo_some_mutex);
+ *   </programlisting>
+ *
+ * - #define %CAIRO_MUTEX_IMPL_NIL_INITIALIZER to something that can
+ *   initialize the #cairo_mutex_impl_t type you defined.  Most of the
+ *   time one of 0, %NULL, or {} works.  At this point
+ *   you should be able to compile the following snippet:
+ *
+ *   <programlisting>
+ *	cairo_mutex_impl_t _cairo_some_mutex = CAIRO_MUTEX_IMPL_NIL_INITIALIZER;
+ *
+ *      if (1)
+ *          CAIRO_MUTEX_IMPL_LOCK (_cairo_some_mutex);
+ *      else
+ *          CAIRO_MUTEX_IMPL_UNLOCK (_cairo_some_mutex);
+ *   </programlisting>
+ *
+ * - If the above code is not enough to initialize a mutex on
+ *   your platform, #define CAIRO_MUTEX_IMPL_INIT(mutex) to statement
+ *   to initialize the mutex (allocate resources, etc).  Such that
+ *   you should be able to compile AND RUN the following snippet:
+ *
+ *   <programlisting>
+ *	cairo_mutex_impl_t _cairo_some_mutex = CAIRO_MUTEX_IMPL_NIL_INITIALIZER;
+ *
+ *      CAIRO_MUTEX_IMPL_INIT (_cairo_some_mutex);
+ *
+ *      if (1)
+ *          CAIRO_MUTEX_IMPL_LOCK (_cairo_some_mutex);
+ *      else
+ *          CAIRO_MUTEX_IMPL_UNLOCK (_cairo_some_mutex);
+ *   </programlisting>
+ *
+ * - If you define CAIRO_MUTEX_IMPL_INIT(mutex), cairo will use it to
+ *   initialize all static mutex'es.  If for any reason that should
+ *   not happen (eg. %CAIRO_MUTEX_IMPL_INIT is just a faster way than
+ *   what cairo does using %CAIRO_MUTEX_IMPL_NIL_INITIALIZER), then
+ *   <programlisting>
+ *      #define CAIRO_MUTEX_IMPL_INITIALIZE() CAIRO_MUTEX_IMPL_NOOP
+ *   </programlisting>
+ *
+ * - If your system supports freeing a mutex object (deallocating
+ *   resources, etc), then #define CAIRO_MUTEX_IMPL_FINI(mutex) to do
+ *   that.
+ *
+ * - If you define CAIRO_MUTEX_IMPL_FINI(mutex), cairo will use it to
+ *   define a finalizer function to finalize all static mutex'es.
+ *   However, it's up to you to call CAIRO_MUTEX_IMPL_FINALIZE() at
+ *   proper places, eg. when the system is unloading the cairo library.
+ *   So, if for any reason finalizing static mutex'es is not needed
+ *   (eg. you never call CAIRO_MUTEX_IMPL_FINALIZE()), then
+ *   <programlisting>
+ *      #define CAIRO_MUTEX_IMPL_FINALIZE() CAIRO_MUTEX_IMPL_NOOP
+ *   </programlisting>
+ *
+ * - That is all.  If for any reason you think the above API is
+ *   not enough to implement #cairo_mutex_impl_t on your system, please
+ *   stop and write to the cairo mailing list about it.  DO NOT
+ *   poke around cairo-mutex-private.h for possible solutions.
+ */
+
+#if CAIRO_NO_MUTEX
+
+/* No mutexes */
+
+  typedef int cairo_mutex_impl_t;
+
+# define CAIRO_MUTEX_IMPL_NO 1
+# define CAIRO_MUTEX_IMPL_INITIALIZE() CAIRO_MUTEX_IMPL_NOOP
+# define CAIRO_MUTEX_IMPL_LOCK(mutex) CAIRO_MUTEX_IMPL_NOOP1(mutex)
+# define CAIRO_MUTEX_IMPL_UNLOCK(mutex) CAIRO_MUTEX_IMPL_NOOP1(mutex)
+# define CAIRO_MUTEX_IMPL_NIL_INITIALIZER 0
+
+# define CAIRO_MUTEX_HAS_RECURSIVE_IMPL 1
+
+  typedef int cairo_recursive_mutex_impl_t;
+
+# define CAIRO_RECURSIVE_MUTEX_IMPL_INIT(mutex)
+# define CAIRO_RECURSIVE_MUTEX_IMPL_NIL_INITIALIZER 0
+
+#elif defined(_WIN32) /******************************************************/
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+# include <windows.h>
+
+  typedef CRITICAL_SECTION cairo_mutex_impl_t;
+
+# define CAIRO_MUTEX_IMPL_WIN32 1
+# define CAIRO_MUTEX_IMPL_LOCK(mutex) EnterCriticalSection (&(mutex))
+# define CAIRO_MUTEX_IMPL_UNLOCK(mutex) LeaveCriticalSection (&(mutex))
+# define CAIRO_MUTEX_IMPL_INIT(mutex) InitializeCriticalSection (&(mutex))
+# define CAIRO_MUTEX_IMPL_FINI(mutex) DeleteCriticalSection (&(mutex))
+# define CAIRO_MUTEX_IMPL_NIL_INITIALIZER { NULL, 0, 0, NULL, NULL, 0 }
+
+#elif defined __OS2__ /******************************************************/
+
+# define INCL_BASE
+# define INCL_PM
+# include <os2.h>
+
+  typedef HMTX cairo_mutex_impl_t;
+
+# define CAIRO_MUTEX_IMPL_OS2 1
+# define CAIRO_MUTEX_IMPL_LOCK(mutex) DosRequestMutexSem(mutex, SEM_INDEFINITE_WAIT)
+# define CAIRO_MUTEX_IMPL_UNLOCK(mutex) DosReleaseMutexSem(mutex)
+# define CAIRO_MUTEX_IMPL_INIT(mutex) DosCreateMutexSem (NULL, &(mutex), 0L, FALSE)
+# define CAIRO_MUTEX_IMPL_FINI(mutex) DosCloseMutexSem (mutex)
+# define CAIRO_MUTEX_IMPL_NIL_INITIALIZER 0
+
+#elif CAIRO_HAS_BEOS_SURFACE /***********************************************/
+
+  typedef BLocker* cairo_mutex_impl_t;
+
+# define CAIRO_MUTEX_IMPL_BEOS 1
+# define CAIRO_MUTEX_IMPL_LOCK(mutex) (mutex)->Lock()
+# define CAIRO_MUTEX_IMPL_UNLOCK(mutex) (mutex)->Unlock()
+# define CAIRO_MUTEX_IMPL_INIT(mutex) (mutex) = new BLocker()
+# define CAIRO_MUTEX_IMPL_FINI(mutex) delete (mutex)
+# define CAIRO_MUTEX_IMPL_NIL_INITIALIZER NULL
+
+#elif CAIRO_HAS_PTHREAD /* and finally if there are no native mutexes ********/
+
+# include <pthread.h>
+
+  typedef pthread_mutex_t cairo_mutex_impl_t;
+  typedef pthread_mutex_t cairo_recursive_mutex_impl_t;
+
+# define CAIRO_MUTEX_IMPL_PTHREAD 1
+#if HAVE_LOCKDEP
+/* expose all mutexes to the validator */
+# define CAIRO_MUTEX_IMPL_INIT(mutex) pthread_mutex_init (&(mutex), NULL)
+#endif
+# define CAIRO_MUTEX_IMPL_LOCK(mutex) pthread_mutex_lock (&(mutex))
+# define CAIRO_MUTEX_IMPL_UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
+#if HAVE_LOCKDEP
+# define CAIRO_MUTEX_IS_LOCKED(mutex) LOCKDEP_IS_LOCKED (&(mutex))
+# define CAIRO_MUTEX_IS_UNLOCKED(mutex) LOCKDEP_IS_UNLOCKED (&(mutex))
+#endif
+# define CAIRO_MUTEX_IMPL_FINI(mutex) pthread_mutex_destroy (&(mutex))
+#if ! HAVE_LOCKDEP
+# define CAIRO_MUTEX_IMPL_FINALIZE() CAIRO_MUTEX_IMPL_NOOP
+#endif
+# define CAIRO_MUTEX_IMPL_NIL_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+
+# define CAIRO_MUTEX_HAS_RECURSIVE_IMPL 1
+# define CAIRO_RECURSIVE_MUTEX_IMPL_INIT(mutex) do { \
+    pthread_mutexattr_t attr; \
+    pthread_mutexattr_init (&attr); \
+    pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE); \
+    pthread_mutex_init (&(mutex), &attr); \
+    pthread_mutexattr_destroy (&attr); \
+} while (0)
+# define CAIRO_RECURSIVE_MUTEX_IMPL_NIL_INITIALIZER PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+
+#else /**********************************************************************/
+
+# error "XXX: No mutex implementation found.  Cairo will not work with multiple threads.  Define CAIRO_NO_MUTEX to 1 to acknowledge and accept this limitation and compile cairo without thread-safety support."
+
+#endif
+
+/* By default mutex implementations are assumed to be recursive */
+#if ! CAIRO_MUTEX_HAS_RECURSIVE_IMPL
+
+# define CAIRO_MUTEX_HAS_RECURSIVE_IMPL 1
+
+  typedef cairo_mutex_impl_t cairo_recursive_mutex_impl_t;
+
+# define CAIRO_RECURSIVE_MUTEX_IMPL_INIT(mutex) CAIRO_MUTEX_IMPL_INIT(mutex)
+# define CAIRO_RECURSIVE_MUTEX_IMPL_NIL_INITIALIZER CAIRO_MUTEX_IMPL_NIL_INITIALIZER
+
+#endif
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-mutex-list-private.h b/libs/cairo-1.16.0/src/cairo-mutex-list-private.h
new file mode 100644
index 0000000..f46afad
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mutex-list-private.h
@@ -0,0 +1,78 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Mathias Hasselmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Mathias Hasselmann <mathias.hasselmann@gmx.de>
+ */
+
+#ifndef CAIRO_FEATURES_H
+/* This block is to just make this header file standalone */
+#define CAIRO_MUTEX_DECLARE(mutex)
+#endif
+
+CAIRO_MUTEX_DECLARE (_cairo_pattern_solid_surface_cache_lock)
+
+CAIRO_MUTEX_DECLARE (_cairo_image_solid_cache_mutex)
+
+CAIRO_MUTEX_DECLARE (_cairo_toy_font_face_mutex)
+CAIRO_MUTEX_DECLARE (_cairo_intern_string_mutex)
+CAIRO_MUTEX_DECLARE (_cairo_scaled_font_map_mutex)
+CAIRO_MUTEX_DECLARE (_cairo_scaled_glyph_page_cache_mutex)
+CAIRO_MUTEX_DECLARE (_cairo_scaled_font_error_mutex)
+CAIRO_MUTEX_DECLARE (_cairo_glyph_cache_mutex)
+
+#if CAIRO_HAS_FT_FONT
+CAIRO_MUTEX_DECLARE (_cairo_ft_unscaled_font_map_mutex)
+#endif
+
+#if CAIRO_HAS_WIN32_FONT
+CAIRO_MUTEX_DECLARE (_cairo_win32_font_face_mutex)
+#endif
+
+#if CAIRO_HAS_XLIB_SURFACE
+CAIRO_MUTEX_DECLARE (_cairo_xlib_display_mutex)
+#endif
+
+#if CAIRO_HAS_XCB_SURFACE
+CAIRO_MUTEX_DECLARE (_cairo_xcb_connections_mutex)
+#endif
+
+#if CAIRO_HAS_GL_SURFACE
+CAIRO_MUTEX_DECLARE (_cairo_gl_context_mutex)
+#endif
+
+#if !defined (HAS_ATOMIC_OPS) || defined (ATOMIC_OP_NEEDS_MEMORY_BARRIER)
+CAIRO_MUTEX_DECLARE (_cairo_atomic_mutex)
+#endif
+
+#if CAIRO_HAS_DRM_SURFACE
+CAIRO_MUTEX_DECLARE (_cairo_drm_device_mutex)
+#endif
+/* Undefine, to err on unintended inclusion */
+#undef   CAIRO_MUTEX_DECLARE
diff --git a/libs/cairo-1.16.0/src/cairo-mutex-private.h b/libs/cairo-1.16.0/src/cairo-mutex-private.h
new file mode 100644
index 0000000..61a7160
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mutex-private.h
@@ -0,0 +1,67 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005,2007 Red Hat, Inc.
+ * Copyright © 2007 Mathias Hasselmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Mathias Hasselmann <mathias.hasselmann@gmx.de>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#ifndef CAIRO_MUTEX_PRIVATE_H
+#define CAIRO_MUTEX_PRIVATE_H
+
+#include "cairo-mutex-type-private.h"
+
+CAIRO_BEGIN_DECLS
+
+#if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
+cairo_private void _cairo_mutex_initialize (void);
+#endif
+#if _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
+cairo_private void _cairo_mutex_finalize (void);
+#endif
+/* only if using static initializer and/or finalizer define the boolean */
+#if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER || _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
+  cairo_private extern cairo_bool_t _cairo_mutex_initialized;
+#endif
+
+/* Finally, extern the static mutexes and undef */
+
+#define CAIRO_MUTEX_DECLARE(mutex) cairo_private extern cairo_mutex_t mutex;
+#include "cairo-mutex-list-private.h"
+#undef CAIRO_MUTEX_DECLARE
+
+CAIRO_END_DECLS
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-mutex-type-private.h b/libs/cairo-1.16.0/src/cairo-mutex-type-private.h
new file mode 100644
index 0000000..e8c4939
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mutex-type-private.h
@@ -0,0 +1,194 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005,2007 Red Hat, Inc.
+ * Copyright © 2007 Mathias Hasselmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Mathias Hasselmann <mathias.hasselmann@gmx.de>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#ifndef CAIRO_MUTEX_TYPE_PRIVATE_H
+#define CAIRO_MUTEX_TYPE_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-mutex-impl-private.h"
+
+/* Only the following four are mandatory at this point */
+#ifndef CAIRO_MUTEX_IMPL_LOCK
+# error "CAIRO_MUTEX_IMPL_LOCK not defined.  Check cairo-mutex-impl-private.h."
+#endif
+#ifndef CAIRO_MUTEX_IMPL_UNLOCK
+# error "CAIRO_MUTEX_IMPL_UNLOCK not defined.  Check cairo-mutex-impl-private.h."
+#endif
+#ifndef CAIRO_MUTEX_IMPL_NIL_INITIALIZER
+# error "CAIRO_MUTEX_IMPL_NIL_INITIALIZER not defined.  Check cairo-mutex-impl-private.h."
+#endif
+#ifndef CAIRO_RECURSIVE_MUTEX_IMPL_INIT
+# error "CAIRO_RECURSIVE_MUTEX_IMPL_INIT not defined.  Check cairo-mutex-impl-private.h."
+#endif
+
+
+/* make sure implementations don't fool us: we decide these ourself */
+#undef _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
+#undef _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
+
+
+#ifdef CAIRO_MUTEX_IMPL_INIT
+
+/* If %CAIRO_MUTEX_IMPL_INIT is defined, we may need to initialize all
+ * static mutex'es. */
+# ifndef CAIRO_MUTEX_IMPL_INITIALIZE
+#  define CAIRO_MUTEX_IMPL_INITIALIZE() do {	\
+       if (!_cairo_mutex_initialized)	\
+           _cairo_mutex_initialize ();	\
+    } while(0)
+
+/* and make sure we implement the above */
+#  define _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER 1
+# endif /* CAIRO_MUTEX_IMPL_INITIALIZE */
+
+#else /* no CAIRO_MUTEX_IMPL_INIT */
+
+/* Otherwise we probably don't need to initialize static mutex'es, */
+# ifndef CAIRO_MUTEX_IMPL_INITIALIZE
+#  define CAIRO_MUTEX_IMPL_INITIALIZE() CAIRO_MUTEX_IMPL_NOOP
+# endif /* CAIRO_MUTEX_IMPL_INITIALIZE */
+
+/* and dynamic ones can be initialized using the static initializer. */
+# define CAIRO_MUTEX_IMPL_INIT(mutex) do {				\
+      cairo_mutex_t _tmp_mutex = CAIRO_MUTEX_IMPL_NIL_INITIALIZER;	\
+      memcpy (&(mutex), &_tmp_mutex, sizeof (_tmp_mutex));	\
+  } while (0)
+
+#endif /* CAIRO_MUTEX_IMPL_INIT */
+
+#ifdef CAIRO_MUTEX_IMPL_FINI
+
+/* If %CAIRO_MUTEX_IMPL_FINI is defined, we may need to finalize all
+ * static mutex'es. */
+# ifndef CAIRO_MUTEX_IMPL_FINALIZE
+#  define CAIRO_MUTEX_IMPL_FINALIZE() do {	\
+       if (_cairo_mutex_initialized)	\
+           _cairo_mutex_finalize ();	\
+    } while(0)
+
+/* and make sure we implement the above */
+#  define _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER 1
+# endif /* CAIRO_MUTEX_IMPL_FINALIZE */
+
+#else /* no CAIRO_MUTEX_IMPL_FINI */
+
+/* Otherwise we probably don't need to finalize static mutex'es, */
+# ifndef CAIRO_MUTEX_IMPL_FINALIZE
+#  define CAIRO_MUTEX_IMPL_FINALIZE() CAIRO_MUTEX_IMPL_NOOP
+# endif /* CAIRO_MUTEX_IMPL_FINALIZE */
+
+/* neither do the dynamic ones. */
+# define CAIRO_MUTEX_IMPL_FINI(mutex)	CAIRO_MUTEX_IMPL_NOOP1(mutex)
+
+#endif /* CAIRO_MUTEX_IMPL_FINI */
+
+
+#ifndef _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
+#define _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER 0
+#endif
+#ifndef _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
+#define _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER 0
+#endif
+
+
+/* Make sure everything we want is defined */
+#ifndef CAIRO_MUTEX_IMPL_INITIALIZE
+# error "CAIRO_MUTEX_IMPL_INITIALIZE not defined"
+#endif
+#ifndef CAIRO_MUTEX_IMPL_FINALIZE
+# error "CAIRO_MUTEX_IMPL_FINALIZE not defined"
+#endif
+#ifndef CAIRO_MUTEX_IMPL_LOCK
+# error "CAIRO_MUTEX_IMPL_LOCK not defined"
+#endif
+#ifndef CAIRO_MUTEX_IMPL_UNLOCK
+# error "CAIRO_MUTEX_IMPL_UNLOCK not defined"
+#endif
+#ifndef CAIRO_MUTEX_IMPL_INIT
+# error "CAIRO_MUTEX_IMPL_INIT not defined"
+#endif
+#ifndef CAIRO_MUTEX_IMPL_FINI
+# error "CAIRO_MUTEX_IMPL_FINI not defined"
+#endif
+#ifndef CAIRO_MUTEX_IMPL_NIL_INITIALIZER
+# error "CAIRO_MUTEX_IMPL_NIL_INITIALIZER not defined"
+#endif
+
+
+/* Public interface. */
+
+/* By default it simply uses the implementation provided.
+ * But we can provide for debugging features by overriding them */
+
+#ifndef CAIRO_MUTEX_DEBUG
+typedef cairo_mutex_impl_t cairo_mutex_t;
+typedef cairo_recursive_mutex_impl_t cairo_recursive_mutex_t;
+#else
+# define cairo_mutex_t			cairo_mutex_impl_t
+#endif
+
+#define CAIRO_MUTEX_INITIALIZE		CAIRO_MUTEX_IMPL_INITIALIZE
+#define CAIRO_MUTEX_FINALIZE		CAIRO_MUTEX_IMPL_FINALIZE
+#define CAIRO_MUTEX_LOCK		CAIRO_MUTEX_IMPL_LOCK
+#define CAIRO_MUTEX_UNLOCK		CAIRO_MUTEX_IMPL_UNLOCK
+#define CAIRO_MUTEX_INIT		CAIRO_MUTEX_IMPL_INIT
+#define CAIRO_MUTEX_FINI		CAIRO_MUTEX_IMPL_FINI
+#define CAIRO_MUTEX_NIL_INITIALIZER	CAIRO_MUTEX_IMPL_NIL_INITIALIZER
+
+#define CAIRO_RECURSIVE_MUTEX_INIT		CAIRO_RECURSIVE_MUTEX_IMPL_INIT
+#define CAIRO_RECURSIVE_MUTEX_NIL_INITIALIZER	CAIRO_RECURSIVE_MUTEX_IMPL_NIL_INITIALIZER
+
+#ifndef CAIRO_MUTEX_IS_LOCKED
+# define CAIRO_MUTEX_IS_LOCKED(name) 1
+#endif
+#ifndef CAIRO_MUTEX_IS_UNLOCKED
+# define CAIRO_MUTEX_IS_UNLOCKED(name) 1
+#endif
+
+
+/* Debugging support */
+
+#ifdef CAIRO_MUTEX_DEBUG
+
+/* TODO add mutex debugging facilities here (eg deadlock detection) */
+
+#endif /* CAIRO_MUTEX_DEBUG */
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-mutex.c b/libs/cairo-1.16.0/src/cairo-mutex.c
new file mode 100644
index 0000000..0a31dce
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-mutex.c
@@ -0,0 +1,82 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Mathias Hasselmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Mathias Hasselmann <mathias.hasselmann@gmx.de>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-mutex-private.h"
+
+#define CAIRO_MUTEX_DECLARE(mutex) cairo_mutex_t mutex = CAIRO_MUTEX_NIL_INITIALIZER;
+#include "cairo-mutex-list-private.h"
+#undef   CAIRO_MUTEX_DECLARE
+
+#if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER || _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
+
+# if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
+#  define _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE FALSE
+# else
+#  define _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE TRUE
+# endif
+
+cairo_bool_t _cairo_mutex_initialized = _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE;
+
+# undef _CAIRO_MUTEX_IMPL_INITIALIZED_DEFAULT_VALUE
+
+#endif
+
+#if _CAIRO_MUTEX_IMPL_USE_STATIC_INITIALIZER
+void _cairo_mutex_initialize (void)
+{
+    if (_cairo_mutex_initialized)
+        return;
+
+    _cairo_mutex_initialized = TRUE;
+
+#define  CAIRO_MUTEX_DECLARE(mutex) CAIRO_MUTEX_INIT (mutex);
+#include "cairo-mutex-list-private.h"
+#undef   CAIRO_MUTEX_DECLARE
+}
+#endif
+
+#if _CAIRO_MUTEX_IMPL_USE_STATIC_FINALIZER
+void _cairo_mutex_finalize (void)
+{
+    if (!_cairo_mutex_initialized)
+        return;
+
+    _cairo_mutex_initialized = FALSE;
+
+#define  CAIRO_MUTEX_DECLARE(mutex) CAIRO_MUTEX_FINI (mutex);
+#include "cairo-mutex-list-private.h"
+#undef   CAIRO_MUTEX_DECLARE
+}
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-no-compositor.c b/libs/cairo-1.16.0/src/cairo-no-compositor.c
new file mode 100644
index 0000000..1602a12
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-no-compositor.c
@@ -0,0 +1,107 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-compositor-private.h"
+
+static cairo_int_status_t
+_cairo_no_compositor_paint (const cairo_compositor_t *_compositor,
+			    cairo_composite_rectangles_t *extents)
+{
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_no_compositor_mask (const cairo_compositor_t *compositor,
+			   cairo_composite_rectangles_t *extents)
+{
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_no_compositor_stroke (const cairo_compositor_t *_compositor,
+			     cairo_composite_rectangles_t *extents,
+			     const cairo_path_fixed_t	*path,
+			     const cairo_stroke_style_t	*style,
+			     const cairo_matrix_t	*ctm,
+			     const cairo_matrix_t	*ctm_inverse,
+			     double		 tolerance,
+			     cairo_antialias_t	 antialias)
+{
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_no_compositor_fill (const cairo_compositor_t *_compositor,
+			   cairo_composite_rectangles_t *extents,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t	 fill_rule,
+			   double			 tolerance,
+			   cairo_antialias_t	 antialias)
+{
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_no_compositor_glyphs (const cairo_compositor_t *compositor,
+			     cairo_composite_rectangles_t *extents,
+			     cairo_scaled_font_t	*scaled_font,
+			     cairo_glyph_t		*glyphs,
+			     int			 num_glyphs,
+			     cairo_bool_t overlap)
+{
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+const cairo_compositor_t __cairo_no_compositor = {
+    NULL,
+    _cairo_no_compositor_paint,
+    _cairo_no_compositor_mask,
+    _cairo_no_compositor_stroke,
+    _cairo_no_compositor_fill,
+    _cairo_no_compositor_glyphs,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-observer.c b/libs/cairo-1.16.0/src/cairo-observer.c
new file mode 100644
index 0000000..36d6b93
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-observer.c
@@ -0,0 +1,52 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2010 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-list-inline.h"
+
+void
+_cairo_observers_notify (cairo_list_t *observers, void *arg)
+{
+    cairo_observer_t *obs, *next;
+
+    cairo_list_foreach_entry_safe (obs, next,
+				   cairo_observer_t,
+				   observers, link)
+    {
+	obs->callback (obs, arg);
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-os2-private.h b/libs/cairo-1.16.0/src/cairo-os2-private.h
new file mode 100644
index 0000000..829dd3c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-os2-private.h
@@ -0,0 +1,67 @@
+/* vim: set sw=4 sts=4 et cin: */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2005-2006 netlabs.org
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is
+ *     Doodle <doodle@scenergy.dfmk.hu>
+ *
+ * Contributor(s):
+ *     Peter Weilbacher <mozilla@Weilbacher.org>
+ */
+
+#ifndef CAIRO_OS2_PRIVATE_H
+#define CAIRO_OS2_PRIVATE_H
+
+#include "cairo-os2.h"
+#include "cairoint.h"
+
+typedef struct _cairo_os2_surface
+{
+    cairo_surface_t        base;
+
+    /* Mutex semaphore to protect private fields from concurrent access */
+    HMTX                   hmtx_use_private_fields;
+    /* Private fields: */
+    HPS                    hps_client_window;
+    HWND                   hwnd_client_window;
+    BITMAPINFO2            bitmap_info;
+    unsigned char         *pixels;
+    cairo_image_surface_t *image_surface;
+    int                    pixel_array_lend_count;
+    HEV                    hev_pixel_array_came_back;
+
+    RECTL                  rcl_dirty_area;
+    cairo_bool_t           dirty_area_present;
+
+    /* General flags: */
+    cairo_bool_t           blit_as_changes;
+    cairo_bool_t           use_24bpp;
+} cairo_os2_surface_t;
+
+#endif /* CAIRO_OS2_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-os2-surface.c b/libs/cairo-1.16.0/src/cairo-os2-surface.c
new file mode 100644
index 0000000..84f08c8
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-os2-surface.c
@@ -0,0 +1,1416 @@
+/* vim: set sw=4 sts=4 et cin: */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2005-2006 netlabs.org
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is
+ *     Doodle <doodle@scenergy.dfmk.hu>
+ *
+ * Contributor(s):
+ *     Peter Weilbacher <mozilla@Weilbacher.org>
+ *     Rich Walsh <dragtext@e-vertise.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-os2-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-surface-fallback-private.h"
+#include "cairo-image-surface-private.h"
+
+#if CAIRO_HAS_FC_FONT
+#include <fontconfig/fontconfig.h>
+#endif
+
+#include <float.h>
+#ifdef BUILD_CAIRO_DLL
+# include "cairo-os2.h"
+# ifndef __WATCOMC__
+#  include <emx/startup.h>
+# endif
+#endif
+
+/*
+ * Here comes the extra API for the OS/2 platform. Currently it consists
+ * of two extra functions, the cairo_os2_init() and the
+ * cairo_os2_fini(). Both of them are called automatically if
+ * Cairo is compiled to be a DLL file, but you have to call them before
+ * using the Cairo API if you link to Cairo statically!
+ *
+ * You'll also find the code in here which deals with DLL initialization
+ * and termination, if the code is built to be a DLL.
+ * (if BUILD_CAIRO_DLL is defined)
+ */
+
+/* Initialization counter: */
+static int cairo_os2_initialization_count = 0;
+
+static inline void
+DisableFPUException (void)
+{
+    unsigned short usCW;
+
+    /* Some OS/2 PM API calls modify the FPU Control Word,
+     * but forget to restore it.
+     *
+     * This can result in XCPT_FLOAT_INVALID_OPCODE exceptions,
+     * so to be sure, we disable Invalid Opcode FPU exception
+     * before using FPU stuffs.
+     */
+    usCW = _control87 (0, 0);
+    usCW = usCW | EM_INVALID | 0x80;
+    _control87 (usCW, MCW_EM | 0x80);
+}
+
+/**
+ * cairo_os2_init:
+ *
+ * Initializes the Cairo library. This function is automatically called if
+ * Cairo was compiled to be a DLL (however it's not a problem if it's called
+ * multiple times). But if you link to Cairo statically, you have to call it
+ * once to set up Cairo's internal structures and mutexes.
+ *
+ * Since: 1.4
+ **/
+cairo_public void
+cairo_os2_init (void)
+{
+    /* This may initialize some stuffs, like create mutex semaphores etc.. */
+
+    cairo_os2_initialization_count++;
+    if (cairo_os2_initialization_count > 1) return;
+
+    DisableFPUException ();
+
+#if CAIRO_HAS_FC_FONT
+    /* Initialize FontConfig */
+    FcInit ();
+#endif
+
+    CAIRO_MUTEX_INITIALIZE ();
+}
+
+/**
+ * cairo_os2_fini:
+ *
+ * Uninitializes the Cairo library. This function is automatically called if
+ * Cairo was compiled to be a DLL (however it's not a problem if it's called
+ * multiple times). But if you link to Cairo statically, you have to call it
+ * once to shut down Cairo, to let it free all the resources it has allocated.
+ *
+ * Since: 1.4
+ **/
+cairo_public void
+cairo_os2_fini (void)
+{
+    /* This has to uninitialize some stuffs, like destroy mutex semaphores etc.. */
+
+    if (cairo_os2_initialization_count <= 0) return;
+    cairo_os2_initialization_count--;
+    if (cairo_os2_initialization_count > 0) return;
+
+    DisableFPUException ();
+
+    cairo_debug_reset_static_data ();
+
+#if CAIRO_HAS_FC_FONT
+# if HAVE_FCFINI
+    /* Uninitialize FontConfig */
+    FcFini ();
+# endif
+#endif
+
+#ifdef __WATCOMC__
+    /* It can happen that the libraries we use have memory leaks,
+     * so there are still memory chunks allocated at this point.
+     * In these cases, Watcom might still have a bigger memory chunk,
+     * called "the heap" allocated from the OS.
+     * As we want to minimize the memory we lose from the point of
+     * view of the OS, we call this function to shrink that heap
+     * as much as possible.
+     */
+    _heapshrink ();
+#else
+    /* GCC has a heapmin function that approximately corresponds to
+     * what the Watcom function does
+     */
+    _heapmin ();
+#endif
+}
+
+/*
+ * This function calls the allocation function depending on which
+ * method was compiled into the library: it can be native allocation
+ * (DosAllocMem/DosFreeMem) or C-Library based allocation (malloc/free).
+ * Actually, for pixel buffers that we use this function for, cairo
+ * uses _cairo_malloc_abc, so we use that here, too. And use the
+ * change to check the size argument
+ */
+void *_buffer_alloc (size_t a, size_t b, const unsigned int size)
+{
+    size_t nbytes;
+    void  *buffer = NULL;
+
+    if (!a || !b || !size ||
+        a >= INT32_MAX / b || a*b >= INT32_MAX / size) {
+        return NULL;
+    }
+    nbytes = a * b * size;
+
+#ifdef OS2_USE_PLATFORM_ALLOC
+    /* Using OBJ_ANY on a machine that isn't configured for hi-mem
+     * will cause ERROR_INVALID_PARAMETER.  If this occurs, or this
+     * build doesn't have hi-mem enabled, fall back to using lo-mem.
+     */
+#ifdef OS2_HIGH_MEMORY
+    if (!DosAllocMem (&buffer, nbytes,
+                      OBJ_ANY | PAG_READ | PAG_WRITE | PAG_COMMIT))
+        return buffer;
+#endif
+    if (DosAllocMem (&buffer, nbytes,
+                     PAG_READ | PAG_WRITE | PAG_COMMIT))
+        return NULL;
+#else
+    /* Clear the malloc'd buffer the way DosAllocMem() does. */
+    buffer = _cairo_malloc (nbytes);
+    if (buffer) {
+        memset (buffer, 0, nbytes);
+    }
+#endif
+    return buffer;
+}
+
+/*
+ * This function selects the free function depending on which
+ * allocation method was compiled into the library
+ */
+void _buffer_free (void *buffer)
+{
+#ifdef OS2_USE_PLATFORM_ALLOC
+    DosFreeMem (buffer);
+#else
+    free (buffer);
+#endif
+}
+
+/* XXX
+ * The cairo_os2_ini() and cairo_os2_fini() functions should be removed and
+ * the LibMain code moved to cairo-system.c.  It should also call
+ * cairo_debug_reset_static_data() instead of duplicating its logic...
+ */
+
+#ifdef BUILD_CAIRO_DLL
+/* The main DLL entry for DLL initialization and uninitialization */
+/* Only include this code if we're about to build a DLL.          */
+
+#ifdef __WATCOMC__
+unsigned _System
+LibMain (unsigned hmod,
+         unsigned termination)
+#else
+unsigned long _System
+_DLL_InitTerm (unsigned long hModule,
+               unsigned long termination)
+#endif
+{
+    if (termination) {
+        /* Unloading the DLL */
+        cairo_os2_fini ();
+
+#ifndef __WATCOMC__
+        /* Uninitialize RTL of GCC */
+        __ctordtorTerm ();
+        _CRT_term ();
+#endif
+        return 1;
+    } else {
+        /* Loading the DLL */
+#ifndef __WATCOMC__
+        /* Initialize RTL of GCC */
+        if (_CRT_init () != 0)
+            return 0;
+        __ctordtorInit ();
+#endif
+
+        cairo_os2_init ();
+        return 1;
+    }
+}
+
+#endif /* BUILD_CAIRO_DLL */
+
+/*
+ * The following part of the source file contains the code which might
+ * be called the "core" of the OS/2 backend support. This contains the
+ * OS/2 surface support functions and structures.
+ */
+
+/* Forward declaration */
+static const cairo_surface_backend_t cairo_os2_surface_backend;
+
+/* Unpublished API:
+ *   GpiEnableYInversion = PMGPI.723
+ *   GpiQueryYInversion = PMGPI.726
+ *   BOOL APIENTRY GpiEnableYInversion (HPS hps, LONG lHeight);
+ *   LONG APIENTRY GpiQueryYInversion (HPS hps);
+ */
+BOOL APIENTRY GpiEnableYInversion (HPS hps, LONG lHeight);
+LONG APIENTRY GpiQueryYInversion (HPS hps);
+
+#ifdef __WATCOMC__
+/* Function declaration for GpiDrawBits () (missing from OpenWatcom headers) */
+LONG APIENTRY GpiDrawBits (HPS hps,
+                           PVOID pBits,
+                           PBITMAPINFO2 pbmiInfoTable,
+                           LONG lCount,
+                           PPOINTL aptlPoints,
+                           LONG lRop,
+                           ULONG flOptions);
+#endif
+
+static void
+_cairo_os2_surface_blit_pixels (cairo_os2_surface_t *surface,
+                                HPS                  hps_begin_paint,
+                                PRECTL               prcl_begin_paint_rect)
+{
+    POINTL aptlPoints[4];
+    LONG   lOldYInversion;
+    LONG   rc = GPI_OK;
+
+    /* Check the limits (may not be necessary) */
+    if (prcl_begin_paint_rect->xLeft < 0)
+        prcl_begin_paint_rect->xLeft = 0;
+    if (prcl_begin_paint_rect->yBottom < 0)
+        prcl_begin_paint_rect->yBottom = 0;
+    if (prcl_begin_paint_rect->xRight > (LONG) surface->bitmap_info.cx)
+        prcl_begin_paint_rect->xRight = (LONG) surface->bitmap_info.cx;
+    if (prcl_begin_paint_rect->yTop > (LONG) surface->bitmap_info.cy)
+        prcl_begin_paint_rect->yTop = (LONG) surface->bitmap_info.cy;
+
+    /* Exit if the rectangle is empty */
+    if (prcl_begin_paint_rect->xLeft   >= prcl_begin_paint_rect->xRight ||
+        prcl_begin_paint_rect->yBottom >= prcl_begin_paint_rect->yTop)
+        return;
+
+    /* Set the Target & Source coordinates */
+    *((PRECTL)&aptlPoints[0]) = *prcl_begin_paint_rect;
+    *((PRECTL)&aptlPoints[2]) = *prcl_begin_paint_rect;
+
+    /* Make the Target coordinates non-inclusive */
+    aptlPoints[1].x -= 1;
+    aptlPoints[1].y -= 1;
+
+    /* Enable Y Inversion for the HPS, so  GpiDrawBits will
+     * work with upside-top image, not with upside-down image!
+     */
+    lOldYInversion = GpiQueryYInversion (hps_begin_paint);
+    GpiEnableYInversion (hps_begin_paint, surface->bitmap_info.cy-1);
+
+    /* Debug code to draw rectangle limits */
+#if 0
+    {
+        int x, y;
+        unsigned char *pixels;
+
+        pixels = surface->pixels;
+        for (x = 0; x < surface->bitmap_info.cx; x++) {
+            for (y = 0; y < surface->bitmap_info.cy; y++) {
+                if ((x == 0) ||
+                    (y == 0) ||
+                    (x == y) ||
+                    (x >= surface->bitmap_info.cx-1) ||
+                    (y >= surface->bitmap_info.cy-1))
+                {
+                    pixels[y*surface->bitmap_info.cx*4+x*4] = 255;
+                }
+            }
+        }
+    }
+#endif
+    if (!surface->use_24bpp) {
+        rc = GpiDrawBits (hps_begin_paint,
+                          surface->pixels,
+                          &(surface->bitmap_info),
+                          4,
+                          aptlPoints,
+                          ROP_SRCCOPY,
+                          BBO_IGNORE);
+        if (rc != GPI_OK)
+            surface->use_24bpp = TRUE;
+    }
+
+    if (surface->use_24bpp) {
+        /* If GpiDrawBits () failed then this is most likely because the
+         * display driver could not handle a 32bit bitmap. So we need to
+         * - create a buffer that only contains 3 bytes per pixel
+         * - change the bitmap info header to contain 24bit
+         * - pass the new buffer to GpiDrawBits () again
+         * - clean up the new buffer
+         */
+        BITMAPINFO2       bmpinfo;
+        unsigned char    *pchPixBuf;
+        unsigned char    *pchTarget;
+        ULONG            *pulSource;
+        ULONG             ulX;
+        ULONG             ulY;
+        ULONG             ulPad;
+
+        /* Set up the bitmap header, but this time for 24bit depth. */
+        bmpinfo = surface->bitmap_info;
+        bmpinfo.cBitCount = 24;
+
+        /* The start of each row has to be DWORD aligned.  Calculate the
+         * of number aligned bytes per row, the total size of the bitmap,
+         * and the number of padding bytes at the end of each row.
+         */
+        ulX = (((bmpinfo.cx * bmpinfo.cBitCount) + 31) / 32) * 4;
+        bmpinfo.cbImage = ulX * bmpinfo.cy;
+        ulPad = ulX - bmpinfo.cx * 3;
+
+        /* Allocate temporary pixel buffer.  If the rows don't need
+         * padding, it has to be 1 byte larger than the size of the
+         * bitmap  or else the high-order byte from the last source
+         * row will end up in unallocated memory.
+         */
+        pchPixBuf = (unsigned char *)_buffer_alloc (1, 1,
+                                        bmpinfo.cbImage + (ulPad ? 0 : 1));
+
+        if (pchPixBuf) {
+            /* Copy 4 bytes from the source but advance the target ptr only
+             * 3 bytes, so the high-order alpha byte will be overwritten by
+             * the next copy. At the end of each row, skip over the padding.
+             */
+            pchTarget = pchPixBuf;
+            pulSource = (ULONG*)surface->pixels;
+            for (ulY = bmpinfo.cy; ulY; ulY--) {
+                for (ulX = bmpinfo.cx; ulX; ulX--) {
+                    *((ULONG*)pchTarget) = *pulSource++;
+                    pchTarget += 3;
+                }
+                pchTarget += ulPad;
+            }
+
+            rc = GpiDrawBits (hps_begin_paint,
+                              pchPixBuf,
+                              &bmpinfo,
+                              4,
+                              aptlPoints,
+                              ROP_SRCCOPY,
+                              BBO_IGNORE);
+            if (rc != GPI_OK)
+                surface->use_24bpp = FALSE;
+
+            _buffer_free (pchPixBuf);
+        }
+    }
+
+    /* Restore Y inversion */
+    GpiEnableYInversion (hps_begin_paint, lOldYInversion);
+}
+
+static void
+_cairo_os2_surface_get_pixels_from_screen (cairo_os2_surface_t *surface,
+                                           HPS                  hps_begin_paint,
+                                           PRECTL               prcl_begin_paint_rect)
+{
+    HPS hps;
+    HDC hdc;
+    SIZEL sizlTemp;
+    HBITMAP hbmpTemp;
+    BITMAPINFO2 bmi2Temp;
+    POINTL aptlPoints[4];
+    int y;
+    unsigned char *pchTemp;
+
+    /* To copy pixels from screen to our buffer, we do the following steps:
+     *
+     * - Blit pixels from screen to a HBITMAP:
+     *   -- Create Memory Device Context
+     *   -- Create a PS into it
+     *   -- Create a HBITMAP
+     *   -- Select HBITMAP into memory PS
+     *   -- Blit dirty pixels from screen to HBITMAP
+     * - Copy HBITMAP lines (pixels) into our buffer
+     * - Free resources
+     */
+
+    /* Create a memory device context */
+    hdc = DevOpenDC (0, OD_MEMORY,"*",0L, NULL, NULLHANDLE);
+    if (!hdc) {
+        return;
+    }
+
+    /* Create a memory PS */
+    sizlTemp.cx = prcl_begin_paint_rect->xRight - prcl_begin_paint_rect->xLeft;
+    sizlTemp.cy = prcl_begin_paint_rect->yTop - prcl_begin_paint_rect->yBottom;
+    hps = GpiCreatePS (0,
+                       hdc,
+                       &sizlTemp,
+                       PU_PELS | GPIT_NORMAL | GPIA_ASSOC);
+    if (!hps) {
+        DevCloseDC (hdc);
+        return;
+    }
+
+    /* Create an uninitialized bitmap. */
+    /* Prepare BITMAPINFO2 structure for our buffer */
+    memset (&bmi2Temp, 0, sizeof (bmi2Temp));
+    bmi2Temp.cbFix = sizeof (BITMAPINFOHEADER2);
+    bmi2Temp.cx = sizlTemp.cx;
+    bmi2Temp.cy = sizlTemp.cy;
+    bmi2Temp.cPlanes = 1;
+    bmi2Temp.cBitCount = 32;
+
+    hbmpTemp = GpiCreateBitmap (hps,
+                                (PBITMAPINFOHEADER2) &bmi2Temp,
+                                0,
+                                NULL,
+                                NULL);
+
+    if (!hbmpTemp) {
+        GpiDestroyPS (hps);
+        DevCloseDC (hdc);
+        return;
+    }
+
+    /* Select the bitmap into the memory device context. */
+    GpiSetBitmap (hps, hbmpTemp);
+
+    /* Target coordinates (Noninclusive) */
+    aptlPoints[0].x = 0;
+    aptlPoints[0].y = 0;
+
+    aptlPoints[1].x = sizlTemp.cx;
+    aptlPoints[1].y = sizlTemp.cy;
+
+    /* Source coordinates (Inclusive) */
+    aptlPoints[2].x = prcl_begin_paint_rect->xLeft;
+    aptlPoints[2].y = surface->bitmap_info.cy - prcl_begin_paint_rect->yBottom;
+
+    aptlPoints[3].x = prcl_begin_paint_rect->xRight;
+    aptlPoints[3].y = surface->bitmap_info.cy - prcl_begin_paint_rect->yTop;
+
+    /* Blit pixels from screen to bitmap */
+    GpiBitBlt (hps,
+               hps_begin_paint,
+               4,
+               aptlPoints,
+               ROP_SRCCOPY,
+               BBO_IGNORE);
+
+    /* Now we have to extract the pixels from the bitmap. */
+    pchTemp =
+        surface->pixels +
+        (prcl_begin_paint_rect->yBottom)*surface->bitmap_info.cx*4 +
+        prcl_begin_paint_rect->xLeft*4;
+    for (y = 0; y < sizlTemp.cy; y++) {
+        /* Get one line of pixels */
+        GpiQueryBitmapBits (hps,
+                            sizlTemp.cy - y - 1, /* lScanStart */
+                            1,                   /* lScans */
+                            (PBYTE)pchTemp,
+                            &bmi2Temp);
+
+        /* Go for next line */
+        pchTemp += surface->bitmap_info.cx*4;
+    }
+
+    /* Clean up resources */
+    GpiSetBitmap (hps, (HBITMAP) NULL);
+    GpiDeleteBitmap (hbmpTemp);
+    GpiDestroyPS (hps);
+    DevCloseDC (hdc);
+}
+
+static cairo_status_t
+_cairo_os2_surface_acquire_source_image (void                   *abstract_surface,
+                                         cairo_image_surface_t **image_out,
+                                         void                  **image_extra)
+{
+    cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface;
+
+    DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT);
+
+    /* Increase lend counter */
+    surface->pixel_array_lend_count++;
+
+    *image_out = surface->image_surface;
+    *image_extra = NULL;
+
+    DosReleaseMutexSem (surface->hmtx_use_private_fields);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_os2_surface_release_source_image (void                  *abstract_surface,
+                                         cairo_image_surface_t *image,
+                                         void                  *image_extra)
+{
+    cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface;
+
+    /* Decrease Lend counter! */
+    DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT);
+
+    if (surface->pixel_array_lend_count > 0)
+        surface->pixel_array_lend_count--;
+    DosPostEventSem (surface->hev_pixel_array_came_back);
+
+    DosReleaseMutexSem (surface->hmtx_use_private_fields);
+}
+
+static cairo_image_surface_t *
+_cairo_os2_surface_map_to_image (void *abstract_surface,
+				 const cairo_rectangle_int_t *extents)
+{
+    cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface;
+
+    DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT);
+    /* Increase lend counter */
+    surface->pixel_array_lend_count++;
+    DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields);
+
+    /* XXX: BROKEN! */
+    *image_out = _cairo_surface_create_for_rectangle_int (surface->image_surface,
+							  extents);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_os2_surface_unmap_image (void *abstract_surface,
+				cairo_image_surface_t *image)
+{
+    cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface;
+
+    /* So, we got back the image, and if all goes well, then
+     * something has been changed inside the interest_rect.
+     * So, we blit it to the screen!
+     */
+    if (surface->blit_as_changes) {
+	RECTL rclToBlit;
+
+        /* Get mutex, we'll work with the pixel array! */
+        if (DosRequestMutexSem (surface->hmtx_use_private_fields,
+				SEM_INDEFINITE_WAIT) != NO_ERROR)
+	{
+            /* Could not get mutex! */
+            return;
+        }
+
+	rclToBlit.xLeft = image->base.device_transform_inverse.x0;
+	rclToBlit.xRight = rclToBlit.xLeft + image->width; /* Noninclusive */
+	rclToBlit.yTop = image->base.device_transform_inverse.y0;
+	rclToBlit.yBottom = rclToBlit.yTop + image->height; /* Noninclusive */
+
+        if (surface->hwnd_client_window) {
+            /* We know the HWND, so let's invalidate the window region,
+             * so the application will redraw itself, using the
+             * cairo_os2_surface_refresh_window () API from its own PM thread.
+             *
+             * This is the safe method, which should be preferred every time.
+             */
+	    rclToBlit.yTop = surface->bitmap_info.cy - rclToBlit.yTop;
+	    rclToBlit.yBottom = surface->bitmap_info.cy - rclToBlit.yTop;
+            WinInvalidateRect (surface->hwnd_client_window,
+                               &rclToBlit,
+                               FALSE);
+        } else {
+            /* We don't know the HWND, so try to blit the pixels from here!
+             * Please note that it can be problematic if this is not the PM thread!
+             *
+             * It can cause internal PM stuffs to be screwed up, for some reason.
+             * Please always tell the HWND to the surface using the
+             * cairo_os2_surface_set_hwnd () API, and call cairo_os2_surface_refresh_window ()
+             * from your WM_PAINT, if it's possible!
+             */
+            _cairo_os2_surface_blit_pixels (surface,
+                                            surface->hps_client_window,
+                                            &rclToBlit);
+        }
+
+        DosReleaseMutexSem (surface->hmtx_use_private_fields);
+    }
+    /* Also decrease Lend counter! */
+    DosRequestMutexSem (surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT);
+
+    if (surface->pixel_array_lend_count > 0)
+        surface->pixel_array_lend_count--;
+    DosPostEventSem (surface->hev_pixel_array_came_back);
+
+    DosReleaseMutexSem (surface->hmtx_use_private_fields);
+}
+
+static cairo_bool_t
+_cairo_os2_surface_get_extents (void                    *abstract_surface,
+                                cairo_rectangle_int_t   *rectangle)
+{
+    cairo_os2_surface_t *surface = (cairo_os2_surface_t *) abstract_surface;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+    rectangle->width  = surface->bitmap_info.cx;
+    rectangle->height = surface->bitmap_info.cy;
+
+    return TRUE;
+}
+
+/**
+ * cairo_os2_surface_create:
+ * @hps_client_window: the presentation handle to bind the surface to
+ * @width: the width of the surface
+ * @height: the height of the surface
+ *
+ * Create a Cairo surface which is bound to a given presentation space (HPS).
+ * The caller retains ownership of the HPS and must dispose of it after the
+ * the surface has been destroyed.  The surface will be created to have the
+ * given size. By default every change to the surface will be made visible
+ * immediately by blitting it into the window. This can be changed with
+ * cairo_os2_surface_set_manual_window_refresh().
+ * Note that the surface will contain garbage when created, so the pixels
+ * have to be initialized by hand first. You can use the Cairo functions to
+ * fill it with black, or use cairo_surface_mark_dirty() to fill the surface
+ * with pixels from the window/HPS.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.4
+ **/
+cairo_surface_t *
+cairo_os2_surface_create (HPS hps_client_window,
+                          int width,
+                          int height)
+{
+    cairo_os2_surface_t *local_os2_surface = 0;
+    cairo_status_t status;
+    int rc;
+
+    /* Check the size of the window */
+    if ((width <= 0) || (height <= 0)) {
+        status = _cairo_error (CAIRO_STATUS_INVALID_SIZE);
+        goto error_exit;
+    }
+
+    /* Allocate an OS/2 surface structure. */
+    local_os2_surface = (cairo_os2_surface_t *) _cairo_malloc (sizeof (cairo_os2_surface_t));
+    if (!local_os2_surface) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto error_exit;
+    }
+
+    memset(local_os2_surface, 0, sizeof(cairo_os2_surface_t));
+
+    /* Allocate resources:  mutex & event semaphores and the pixel buffer */
+    if (DosCreateMutexSem (NULL,
+                           &(local_os2_surface->hmtx_use_private_fields),
+                           0,
+                           FALSE))
+    {
+        status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+        goto error_exit;
+    }
+
+    if (DosCreateEventSem (NULL,
+                           &(local_os2_surface->hev_pixel_array_came_back),
+                           0,
+                           FALSE))
+    {
+        status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+        goto error_exit;
+    }
+
+    local_os2_surface->pixels = (unsigned char *) _buffer_alloc (height, width, 4);
+    if (!local_os2_surface->pixels) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto error_exit;
+    }
+
+    /* Create image surface from pixel array */
+    local_os2_surface->image_surface = (cairo_image_surface_t *)
+        cairo_image_surface_create_for_data (local_os2_surface->pixels,
+                                             CAIRO_FORMAT_ARGB32,
+                                             width,      /* Width */
+                                             height,     /* Height */
+                                             width * 4); /* Rowstride */
+    status = local_os2_surface->image_surface->base.status;
+    if (status)
+        goto error_exit;
+
+    /* Set values for OS/2-specific data that aren't zero/NULL/FALSE.
+     * Note: hps_client_window may be null if this was called by
+     * cairo_os2_surface_create_for_window().
+     */
+    local_os2_surface->hps_client_window = hps_client_window;
+    local_os2_surface->blit_as_changes = TRUE;
+
+    /* Prepare BITMAPINFO2 structure for our buffer */
+    local_os2_surface->bitmap_info.cbFix = sizeof (BITMAPINFOHEADER2);
+    local_os2_surface->bitmap_info.cx = width;
+    local_os2_surface->bitmap_info.cy = height;
+    local_os2_surface->bitmap_info.cPlanes = 1;
+    local_os2_surface->bitmap_info.cBitCount = 32;
+
+    /* Initialize base surface */
+    _cairo_surface_init (&local_os2_surface->base,
+                         &cairo_os2_surface_backend,
+                         NULL, /* device */
+                         _cairo_content_from_format (CAIRO_FORMAT_ARGB32),
+			 FALSE); /* is_vector */
+
+    /* Successful exit */
+    return (cairo_surface_t *)local_os2_surface;
+
+ error_exit:
+
+    /* This point will only be reached if an error occurred */
+
+    if (local_os2_surface) {
+        if (local_os2_surface->pixels)
+            _buffer_free (local_os2_surface->pixels);
+        if (local_os2_surface->hev_pixel_array_came_back)
+            DosCloseEventSem (local_os2_surface->hev_pixel_array_came_back);
+        if (local_os2_surface->hmtx_use_private_fields)
+            DosCloseMutexSem (local_os2_surface->hmtx_use_private_fields);
+        free (local_os2_surface);
+    }
+
+    return _cairo_surface_create_in_error (status);
+}
+
+/**
+ * cairo_os2_surface_create_for_window:
+ * @hwnd_client_window: the window handle to bind the surface to
+ * @width: the width of the surface
+ * @height: the height of the surface
+ *
+ * Create a Cairo surface which is bound to a given window; the caller retains
+ * ownership of the window.  This is a convenience function for use with
+ * windows that will only be updated when cairo_os2_surface_refresh_window()
+ * is called (usually in response to a WM_PAINT message).  It avoids the need
+ * to create a persistent HPS for every window and assumes that one will be
+ * supplied by the caller when a cairo function needs one.  If it isn't, an
+ * HPS will be created on-the-fly and released before the function which needs
+ * it returns.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.10
+ **/
+cairo_surface_t *
+cairo_os2_surface_create_for_window (HWND hwnd_client_window,
+                                     int width,
+                                     int height)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    /* A window handle must be provided. */
+    if (!hwnd_client_window) {
+        return _cairo_surface_create_in_error (
+                                _cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    /* Create the surface. */
+    local_os2_surface = (cairo_os2_surface_t *)
+        cairo_os2_surface_create (0, width, height);
+
+    /* If successful, save the hwnd & turn off automatic repainting. */
+    if (!local_os2_surface->image_surface->base.status) {
+        local_os2_surface->hwnd_client_window = hwnd_client_window;
+        local_os2_surface->blit_as_changes = FALSE;
+    }
+
+    return (cairo_surface_t *)local_os2_surface;
+}
+
+/**
+ * cairo_os2_surface_set_size:
+ * @surface: the cairo surface to resize
+ * @new_width: the new width of the surface
+ * @new_height: the new height of the surface
+ * @timeout: timeout value in milliseconds
+ *
+ * When the client window is resized, call this API to set the new size in the
+ * underlying surface accordingly. This function will reallocate everything,
+ * so you'll have to redraw everything in the surface after this call.
+ * The surface will contain garbage after the resizing. So the notes of
+ * cairo_os2_surface_create() apply here, too.
+ *
+ * The timeout value specifies how long the function should wait on other parts
+ * of the program to release the buffers. It is necessary, because it can happen
+ * that Cairo is just drawing something into the surface while we want to
+ * destroy and recreate it.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the surface could be resized,
+ * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface is not an OS/2 surface,
+ * %CAIRO_STATUS_INVALID_SIZE for invalid sizes
+ * %CAIRO_STATUS_NO_MEMORY if the new size could not be allocated, or if the
+ * timeout happened before all the buffers were released
+ *
+ * Since: 1.4
+ **/
+int
+cairo_os2_surface_set_size (cairo_surface_t *surface,
+                            int              new_width,
+                            int              new_height,
+                            int              timeout)
+{
+    cairo_os2_surface_t *local_os2_surface;
+    unsigned char *pchNewPixels;
+    int rc;
+    cairo_image_surface_t *pNewImageSurface;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    }
+
+    if ((new_width <= 0) ||
+        (new_height <= 0))
+    {
+        /* Invalid size! */
+        return _cairo_error (CAIRO_STATUS_INVALID_SIZE);
+    }
+
+    /* Allocate memory for new stuffs */
+    pchNewPixels = (unsigned char *) _buffer_alloc (new_height, new_width, 4);
+    if (!pchNewPixels) {
+        /* Not enough memory for the pixels!
+         * Everything remains the same!
+         */
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    /* Create image surface from new pixel array */
+    pNewImageSurface = (cairo_image_surface_t *)
+        cairo_image_surface_create_for_data (pchNewPixels,
+                                             CAIRO_FORMAT_ARGB32,
+                                             new_width,      /* Width */
+                                             new_height,     /* Height */
+                                             new_width * 4); /* Rowstride */
+
+    if (pNewImageSurface->base.status) {
+        /* Could not create image surface!
+         * Everything remains the same!
+         */
+        _buffer_free (pchNewPixels);
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    /* Okay, new memory allocated, so it's time to swap old buffers
+     * to new ones!
+     */
+    if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT)!=NO_ERROR) {
+        /* Could not get mutex!
+         * Everything remains the same!
+         */
+        cairo_surface_destroy ((cairo_surface_t *) pNewImageSurface);
+        _buffer_free (pchNewPixels);
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    /* We have to make sure that we won't destroy a surface which
+     * is lent to some other code (Cairo is drawing into it)!
+     */
+    while (local_os2_surface->pixel_array_lend_count > 0) {
+        ULONG ulPostCount;
+        DosResetEventSem (local_os2_surface->hev_pixel_array_came_back, &ulPostCount);
+        DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields);
+        /* Wait for somebody to return the pixels! */
+        rc = DosWaitEventSem (local_os2_surface->hev_pixel_array_came_back, timeout);
+        if (rc != NO_ERROR) {
+            /* Either timeout or something wrong... Exit. */
+            cairo_surface_destroy ((cairo_surface_t *) pNewImageSurface);
+            _buffer_free (pchNewPixels);
+            return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        }
+        /* Okay, grab mutex and check counter again! */
+        if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT)
+            != NO_ERROR)
+        {
+            /* Could not get mutex!
+             * Everything remains the same!
+             */
+            cairo_surface_destroy ((cairo_surface_t *) pNewImageSurface);
+            _buffer_free (pchNewPixels);
+            return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        }
+    }
+
+    /* Destroy old image surface */
+    cairo_surface_destroy ((cairo_surface_t *) (local_os2_surface->image_surface));
+    /* Destroy old pixel buffer */
+    _buffer_free (local_os2_surface->pixels);
+    /* Set new image surface */
+    local_os2_surface->image_surface = pNewImageSurface;
+    /* Set new pixel buffer */
+    local_os2_surface->pixels = pchNewPixels;
+    /* Change bitmap2 structure */
+    local_os2_surface->bitmap_info.cx = new_width;
+    local_os2_surface->bitmap_info.cy = new_height;
+
+    DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_os2_surface_refresh_window:
+ * @surface: the cairo surface to refresh
+ * @hps_begin_paint: the presentation handle of the window to refresh
+ * @prcl_begin_paint_rect: the rectangle to redraw
+ *
+ * This function can be used to force a repaint of a given area of the client
+ * window. It should usually be called from the WM_PAINT processing of the
+ * window procedure. However, it can be called any time a given part of the
+ * window has to be updated.
+ *
+ * The HPS and RECTL to be passed can be taken from the usual WinBeginPaint call
+ * of the window procedure, but you can also get the HPS using WinGetPS, and you
+ * can assemble your own update rectangle by hand.
+ * If hps_begin_paint is %NULL, the function will use the HPS passed into
+ * cairo_os2_surface_create(). If @prcl_begin_paint_rect is %NULL, the function
+ * will query the current window size and repaint the whole window.
+ *
+ * Cairo assumes that if you set the HWND to the surface using
+ * cairo_os2_surface_set_hwnd(), this function will be called by the application
+ * every time it gets a WM_PAINT for that HWND. If the HWND is set in the
+ * surface, Cairo uses this function to handle dirty areas too.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_os2_surface_refresh_window (cairo_surface_t *surface,
+                                  HPS              hps_begin_paint,
+                                  PRECTL           prcl_begin_paint_rect)
+{
+    cairo_os2_surface_t *local_os2_surface;
+    RECTL rclTemp;
+    HPS hpsTemp = 0;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return;
+    }
+
+    /* If an HPS wasn't provided, see if we can get one. */
+    if (!hps_begin_paint) {
+        hps_begin_paint = local_os2_surface->hps_client_window;
+        if (!hps_begin_paint) {
+            if (local_os2_surface->hwnd_client_window) {
+                hpsTemp = WinGetPS(local_os2_surface->hwnd_client_window);
+                hps_begin_paint = hpsTemp;
+            }
+            /* No HPS & no way to get one, so exit */
+            if (!hps_begin_paint)
+                return;
+        }
+    }
+
+    if (prcl_begin_paint_rect == NULL) {
+        /* Update the whole window! */
+        rclTemp.xLeft = 0;
+        rclTemp.xRight = local_os2_surface->bitmap_info.cx;
+        rclTemp.yTop = local_os2_surface->bitmap_info.cy;
+        rclTemp.yBottom = 0;
+    } else {
+        /* Use the rectangle we got passed as parameter! */
+        rclTemp.xLeft = prcl_begin_paint_rect->xLeft;
+        rclTemp.xRight = prcl_begin_paint_rect->xRight;
+        rclTemp.yTop = local_os2_surface->bitmap_info.cy - prcl_begin_paint_rect->yBottom;
+        rclTemp.yBottom = local_os2_surface->bitmap_info.cy - prcl_begin_paint_rect->yTop ;
+    }
+
+    /* Get mutex, we'll work with the pixel array! */
+    if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT)
+        != NO_ERROR)
+    {
+        /* Could not get mutex! */
+        if (hpsTemp)
+            WinReleasePS(hpsTemp);
+        return;
+    }
+
+    if ((local_os2_surface->dirty_area_present) &&
+        (local_os2_surface->rcl_dirty_area.xLeft == rclTemp.xLeft) &&
+        (local_os2_surface->rcl_dirty_area.xRight == rclTemp.xRight) &&
+        (local_os2_surface->rcl_dirty_area.yTop == rclTemp.yTop) &&
+        (local_os2_surface->rcl_dirty_area.yBottom == rclTemp.yBottom))
+    {
+        /* Aha, this call was because of a dirty area, so in this case we
+         * have to blit the pixels from the screen to the surface!
+         */
+        local_os2_surface->dirty_area_present = FALSE;
+        _cairo_os2_surface_get_pixels_from_screen (local_os2_surface,
+                                                   hps_begin_paint,
+                                                   &rclTemp);
+    } else {
+        /* Okay, we have the surface, have the HPS
+         * (might be from WinBeginPaint () or from WinGetPS () )
+         * Now blit there the stuffs!
+         */
+        _cairo_os2_surface_blit_pixels (local_os2_surface,
+                                        hps_begin_paint,
+                                        &rclTemp);
+    }
+
+    DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields);
+
+    if (hpsTemp)
+        WinReleasePS(hpsTemp);
+}
+
+static cairo_status_t
+_cairo_os2_surface_finish (void *abstract_surface)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    local_os2_surface = (cairo_os2_surface_t *) abstract_surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    }
+
+    DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT);
+
+    /* Destroy old image surface */
+    cairo_surface_destroy ((cairo_surface_t *) (local_os2_surface->image_surface));
+    /* Destroy old pixel buffer */
+    _buffer_free (local_os2_surface->pixels);
+    DosCloseMutexSem (local_os2_surface->hmtx_use_private_fields);
+    DosCloseEventSem (local_os2_surface->hev_pixel_array_came_back);
+
+    /* The memory itself will be free'd by the cairo_surface_destroy ()
+     * who called us.
+     */
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_os2_surface_set_hwnd:
+ * @surface: the cairo surface to associate with the window handle
+ * @hwnd_client_window: the window handle of the client window
+ *
+ * Sets window handle for surface; the caller retains ownership of the window.
+ * If Cairo wants to blit into the window because it is set to blit as the
+ * surface changes (see cairo_os2_surface_set_manual_window_refresh()), then
+ * there are two ways it can choose:
+ * If it knows the HWND of the surface, then it invalidates that area, so the
+ * application will get a WM_PAINT message and it can call
+ * cairo_os2_surface_refresh_window() to redraw that area. Otherwise cairo itself
+ * will use the HPS it got at surface creation time, and blit the pixels itself.
+ * It's also a solution, but experience shows that if this happens from a non-PM
+ * thread, then it can screw up PM internals.
+ *
+ * So, best solution is to set the HWND for the surface after the surface
+ * creation, so every blit will be done from application's message processing
+ * loop, which is the safest way to do.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_os2_surface_set_hwnd (cairo_surface_t *surface,
+                            HWND             hwnd_client_window)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return;
+    }
+
+    if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT)
+        != NO_ERROR)
+    {
+        /* Could not get mutex! */
+        return;
+    }
+
+    local_os2_surface->hwnd_client_window = hwnd_client_window;
+
+    DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields);
+}
+
+/**
+ * cairo_os2_surface_set_manual_window_refresh:
+ * @surface: the cairo surface to set the refresh mode for
+ * @manual_refresh: the switch for manual surface refresh
+ *
+ * This API can tell Cairo if it should show every change to this surface
+ * immediately in the window or if it should be cached and will only be visible
+ * once the user calls cairo_os2_surface_refresh_window() explicitly. If the
+ * HWND was not set in the cairo surface, then the HPS will be used to blit the
+ * graphics. Otherwise it will invalidate the given window region so the user
+ * will get the WM_PAINT message to redraw that area of the window.
+ *
+ * So, if you're only interested in displaying the final result after several
+ * drawing operations, you might get better performance if you put the surface
+ * into manual refresh mode by passing a true value to this function. Then call
+ * cairo_os2_surface_refresh() whenever desired.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_os2_surface_set_manual_window_refresh (cairo_surface_t *surface,
+                                             cairo_bool_t     manual_refresh)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return;
+    }
+
+    local_os2_surface->blit_as_changes = !manual_refresh;
+}
+
+/**
+ * cairo_os2_surface_get_manual_window_refresh:
+ * @surface: the cairo surface to query the refresh mode from
+ *
+ * This space left intentionally blank.
+ *
+ * Return value: current refresh mode of the surface (true by default)
+ *
+ * Since: 1.4
+ **/
+cairo_bool_t
+cairo_os2_surface_get_manual_window_refresh (cairo_surface_t *surface)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return FALSE;
+    }
+
+    return !(local_os2_surface->blit_as_changes);
+}
+
+/**
+ * cairo_os2_surface_get_hps:
+ * @surface: the cairo surface to be querued
+ * @hps: HPS currently associated with the surface (if any)
+ *
+ * This API retrieves the HPS associated with the surface.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the hps could be retrieved,
+ * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface is not an OS/2 surface,
+ * %CAIRO_STATUS_NULL_POINTER if the hps argument is null
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_os2_surface_get_hps (cairo_surface_t *surface,
+                           HPS             *hps)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    }
+    if (!hps)
+    {
+        return _cairo_error (CAIRO_STATUS_NULL_POINTER);
+    }
+    *hps = local_os2_surface->hps_client_window;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_os2_surface_set_hps:
+ * @surface: the cairo surface to associate with the HPS
+ * @hps: new HPS to be associated with the surface (the HPS may be null)
+ *
+ * This API replaces the HPS associated with the surface with a new one.
+ * The caller retains ownership of the HPS and must dispose of it after
+ * the surface has been destroyed or it has been replaced by another
+ * call to this function.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the hps could be replaced,
+ * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface is not an OS/2 surface,
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_os2_surface_set_hps (cairo_surface_t *surface,
+                           HPS              hps)
+{
+    cairo_os2_surface_t *local_os2_surface;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    }
+    local_os2_surface->hps_client_window = hps;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_os2_surface_mark_dirty_rectangle (void *surface,
+                                         int   x,
+                                         int   y,
+                                         int   width,
+                                         int   height)
+{
+    cairo_os2_surface_t *local_os2_surface;
+    RECTL rclToBlit;
+
+    local_os2_surface = (cairo_os2_surface_t *) surface;
+    if ((!local_os2_surface) ||
+        (local_os2_surface->base.backend != &cairo_os2_surface_backend))
+    {
+        /* Invalid parameter (wrong surface)! */
+        return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    }
+
+    /* Get mutex, we'll work with the pixel array! */
+    if (DosRequestMutexSem (local_os2_surface->hmtx_use_private_fields, SEM_INDEFINITE_WAIT)
+        != NO_ERROR)
+    {
+        /* Could not get mutex! */
+        return CAIRO_STATUS_NO_MEMORY;
+    }
+
+    /* Check for defaults */
+    if (width < 0)
+        width = local_os2_surface->bitmap_info.cx;
+    if (height < 0)
+        height = local_os2_surface->bitmap_info.cy;
+
+    if (local_os2_surface->hwnd_client_window) {
+        /* We know the HWND, so let's invalidate the window region,
+         * so the application will redraw itself, using the
+         * cairo_os2_surface_refresh_window () API from its own PM thread.
+         * From that function we'll note that it's not a redraw but a
+         * dirty-rectangle deal stuff, so we'll handle the things from
+         * there.
+         *
+         * This is the safe method, which should be preferred every time.
+         */
+        rclToBlit.xLeft = x;
+        rclToBlit.xRight = x + width; /* Noninclusive */
+        rclToBlit.yTop = local_os2_surface->bitmap_info.cy - (y);
+        rclToBlit.yBottom = local_os2_surface->bitmap_info.cy - (y + height); /* Noninclusive */
+
+#if 0
+        if (local_os2_surface->dirty_area_present) {
+            /* Yikes, there is already a dirty area which should be
+             * cleaned up, but we'll overwrite it. Sorry.
+             * TODO: Something clever should be done here.
+             */
+        }
+#endif
+
+        /* Set up dirty area reminder stuff */
+        memcpy (&(local_os2_surface->rcl_dirty_area), &rclToBlit, sizeof (RECTL));
+        local_os2_surface->dirty_area_present = TRUE;
+
+        /* Invalidate window area */
+        WinInvalidateRect (local_os2_surface->hwnd_client_window,
+                           &rclToBlit,
+                           FALSE);
+    } else {
+        /* We don't know the HWND, so try to blit the pixels from here!
+         * Please note that it can be problematic if this is not the PM thread!
+         *
+         * It can cause internal PM stuffs to be scewed up, for some reason.
+         * Please always tell the HWND to the surface using the
+         * cairo_os2_surface_set_hwnd () API, and call cairo_os2_surface_refresh_window ()
+         * from your WM_PAINT, if it's possible!
+         */
+
+        rclToBlit.xLeft = x;
+        rclToBlit.xRight = x + width; /* Noninclusive */
+        rclToBlit.yBottom = y;
+        rclToBlit.yTop = y + height; /* Noninclusive */
+        /* Now get the pixels from the screen! */
+        _cairo_os2_surface_get_pixels_from_screen (local_os2_surface,
+                                                   local_os2_surface->hps_client_window,
+                                                   &rclToBlit);
+    }
+
+    DosReleaseMutexSem (local_os2_surface->hmtx_use_private_fields);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t cairo_os2_surface_backend = {
+    CAIRO_SURFACE_TYPE_OS2,
+    _cairo_os2_surface_finish,
+    _cairo_default_context_create,
+
+    NULL, /* create_similar */
+    NULL, /* create_similar_image */
+    _cairo_os2_surface_map_to_image,
+    _cairo_os2_surface_unmap_image,
+
+    _cairo_surface_default_source,
+    _cairo_os2_surface_acquire_source_image,
+    _cairo_os2_surface_release_source_image,
+    NULL, /* snapshot */
+
+    _cairo_os2_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    _cairo_os2_surface_mark_dirty_rectangle,
+
+    _cairo_surface_fallback_paint,
+    _cairo_surface_fallback_mask,
+    _cairo_surface_fallback_fill,
+    _cairo_surface_fallback_stroke,
+    NULL, /* fill/stroke */
+    _cairo_surface_fallback_glyphs,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-os2.h b/libs/cairo-1.16.0/src/cairo-os2.h
new file mode 100644
index 0000000..d23f2de
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-os2.h
@@ -0,0 +1,110 @@
+/* vim: set sw=4 sts=4 et cin: */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2005-2006 netlabs.org
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is
+ *     Doodle <doodle@scenergy.dfmk.hu>
+ *
+ * Contributor(s):
+ *     Peter Weilbacher <mozilla@Weilbacher.org>
+ *     Rich Walsh <dragtext@e-vertise.com>
+ */
+
+#ifndef _CAIRO_OS2_H_
+#define _CAIRO_OS2_H_
+
+#define INCL_DOS
+#define INCL_DOSSEMAPHORES
+#define INCL_DOSERRORS
+#define INCL_WIN
+#define INCL_GPI
+
+#include "cairo.h"
+
+#include <os2.h>
+
+CAIRO_BEGIN_DECLS
+
+/* The OS/2 Specific Cairo API */
+
+cairo_public void
+cairo_os2_init (void);
+
+cairo_public void
+cairo_os2_fini (void);
+
+#if CAIRO_HAS_OS2_SURFACE
+
+cairo_public cairo_surface_t *
+cairo_os2_surface_create (HPS hps_client_window,
+                          int width,
+                          int height);
+
+cairo_public cairo_surface_t *
+cairo_os2_surface_create_for_window (HWND hwnd_client_window,
+                                     int  width,
+                                     int  height);
+
+cairo_public void
+cairo_os2_surface_set_hwnd (cairo_surface_t *surface,
+                            HWND             hwnd_client_window);
+
+cairo_public int
+cairo_os2_surface_set_size (cairo_surface_t *surface,
+                            int              new_width,
+                            int              new_height,
+                            int              timeout);
+
+cairo_public void
+cairo_os2_surface_refresh_window (cairo_surface_t *surface,
+                                  HPS              hps_begin_paint,
+                                  PRECTL           prcl_begin_paint_rect);
+
+cairo_public void
+cairo_os2_surface_set_manual_window_refresh (cairo_surface_t *surface,
+                                             cairo_bool_t     manual_refresh);
+
+cairo_public cairo_bool_t
+cairo_os2_surface_get_manual_window_refresh (cairo_surface_t *surface);
+
+cairo_public cairo_status_t
+cairo_os2_surface_get_hps (cairo_surface_t *surface,
+                           HPS             *hps);
+
+cairo_public cairo_status_t
+cairo_os2_surface_set_hps (cairo_surface_t *surface,
+                           HPS              hps);
+
+#else  /* CAIRO_HAS_OS2_SURFACE */
+# error Cairo was not compiled with support for the OS/2 backend
+#endif /* CAIRO_HAS_OS2_SURFACE */
+
+CAIRO_END_DECLS
+
+#endif /* _CAIRO_OS2_H_ */
diff --git a/libs/cairo-1.16.0/src/cairo-output-stream-private.h b/libs/cairo-1.16.0/src/cairo-output-stream-private.h
new file mode 100644
index 0000000..2542646
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-output-stream-private.h
@@ -0,0 +1,201 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Author(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ */
+
+#ifndef CAIRO_OUTPUT_STREAM_PRIVATE_H
+#define CAIRO_OUTPUT_STREAM_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+typedef cairo_status_t
+(*cairo_output_stream_write_func_t) (cairo_output_stream_t *output_stream,
+				     const unsigned char   *data,
+				     unsigned int           length);
+
+typedef cairo_status_t
+(*cairo_output_stream_flush_func_t) (cairo_output_stream_t *output_stream);
+
+typedef cairo_status_t
+(*cairo_output_stream_close_func_t) (cairo_output_stream_t *output_stream);
+
+struct _cairo_output_stream {
+    cairo_output_stream_write_func_t write_func;
+    cairo_output_stream_flush_func_t flush_func;
+    cairo_output_stream_close_func_t close_func;
+    unsigned long		     position;
+    cairo_status_t		     status;
+    cairo_bool_t		     closed;
+};
+
+extern const cairo_private cairo_output_stream_t _cairo_output_stream_nil;
+
+cairo_private void
+_cairo_output_stream_init (cairo_output_stream_t            *stream,
+			   cairo_output_stream_write_func_t  write_func,
+			   cairo_output_stream_flush_func_t  flush_func,
+			   cairo_output_stream_close_func_t  close_func);
+
+cairo_private cairo_status_t
+_cairo_output_stream_fini (cairo_output_stream_t *stream);
+
+
+/* We already have the following declared in cairo.h:
+
+typedef cairo_status_t (*cairo_write_func_t) (void		  *closure,
+					      const unsigned char *data,
+					      unsigned int	   length);
+*/
+typedef cairo_status_t (*cairo_close_func_t) (void *closure);
+
+
+/* This function never returns %NULL. If an error occurs (NO_MEMORY)
+ * while trying to create the output stream this function returns a
+ * valid pointer to a nil output stream.
+ *
+ * Note that even with a nil surface, the close_func callback will be
+ * called by a call to _cairo_output_stream_close or
+ * _cairo_output_stream_destroy.
+ */
+cairo_private cairo_output_stream_t *
+_cairo_output_stream_create (cairo_write_func_t		write_func,
+			     cairo_close_func_t		close_func,
+			     void			*closure);
+
+cairo_private cairo_output_stream_t *
+_cairo_output_stream_create_in_error (cairo_status_t status);
+
+/* Tries to flush any buffer maintained by the stream or its delegates. */
+cairo_private cairo_status_t
+_cairo_output_stream_flush (cairo_output_stream_t *stream);
+
+/* Returns the final status value associated with this object, just
+ * before its last gasp. This final status value will capture any
+ * status failure returned by the stream's close_func as well. */
+cairo_private cairo_status_t
+_cairo_output_stream_close (cairo_output_stream_t *stream);
+
+/* Returns the final status value associated with this object, just
+ * before its last gasp. This final status value will capture any
+ * status failure returned by the stream's close_func as well. */
+cairo_private cairo_status_t
+_cairo_output_stream_destroy (cairo_output_stream_t *stream);
+
+cairo_private void
+_cairo_output_stream_write (cairo_output_stream_t *stream,
+			    const void *data, size_t length);
+
+cairo_private void
+_cairo_output_stream_write_hex_string (cairo_output_stream_t *stream,
+				       const unsigned char *data,
+				       size_t length);
+
+cairo_private void
+_cairo_output_stream_vprintf (cairo_output_stream_t *stream,
+			      const char *fmt,
+			      va_list ap) CAIRO_PRINTF_FORMAT ( 2, 0);
+
+cairo_private void
+_cairo_output_stream_printf (cairo_output_stream_t *stream,
+			     const char *fmt,
+			     ...) CAIRO_PRINTF_FORMAT (2, 3);
+
+/* Print matrix element values with rounding of insignificant digits. */
+cairo_private void
+_cairo_output_stream_print_matrix (cairo_output_stream_t *stream,
+				   const cairo_matrix_t  *matrix);
+
+cairo_private long
+_cairo_output_stream_get_position (cairo_output_stream_t *stream);
+
+cairo_private cairo_status_t
+_cairo_output_stream_get_status (cairo_output_stream_t *stream);
+
+/* This function never returns %NULL. If an error occurs (NO_MEMORY or
+ * WRITE_ERROR) while trying to create the output stream this function
+ * returns a valid pointer to a nil output stream.
+ *
+ * Note: Even if a nil surface is returned, the caller should still
+ * call _cairo_output_stream_destroy (or _cairo_output_stream_close at
+ * least) in order to ensure that everything is properly cleaned up.
+ */
+cairo_private cairo_output_stream_t *
+_cairo_output_stream_create_for_filename (const char *filename);
+
+/* This function never returns %NULL. If an error occurs (NO_MEMORY or
+ * WRITE_ERROR) while trying to create the output stream this function
+ * returns a valid pointer to a nil output stream.
+ *
+ * The caller still "owns" file and is responsible for calling fclose
+ * on it when finished. The stream will not do this itself.
+ */
+cairo_private cairo_output_stream_t *
+_cairo_output_stream_create_for_file (FILE *file);
+
+cairo_private cairo_output_stream_t *
+_cairo_memory_stream_create (void);
+
+cairo_private void
+_cairo_memory_stream_copy (cairo_output_stream_t *base,
+			   cairo_output_stream_t *dest);
+
+cairo_private int
+_cairo_memory_stream_length (cairo_output_stream_t *stream);
+
+cairo_private cairo_status_t
+_cairo_memory_stream_destroy (cairo_output_stream_t *abstract_stream,
+			      unsigned char **data_out,
+			      unsigned long *length_out);
+
+cairo_private cairo_output_stream_t *
+_cairo_null_stream_create (void);
+
+/* cairo-base85-stream.c */
+cairo_private cairo_output_stream_t *
+_cairo_base85_stream_create (cairo_output_stream_t *output);
+
+/* cairo-base64-stream.c */
+cairo_private cairo_output_stream_t *
+_cairo_base64_stream_create (cairo_output_stream_t *output);
+
+/* cairo-deflate-stream.c */
+cairo_private cairo_output_stream_t *
+_cairo_deflate_stream_create (cairo_output_stream_t *output);
+
+
+#endif /* CAIRO_OUTPUT_STREAM_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-output-stream.c b/libs/cairo-1.16.0/src/cairo-output-stream.c
new file mode 100644
index 0000000..935fa44
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-output-stream.c
@@ -0,0 +1,811 @@
+/* cairo-output-stream.c: Output stream abstraction
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Author(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf() */
+#include "cairoint.h"
+
+#include "cairo-output-stream-private.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+#include "cairo-compiler-private.h"
+
+#include <stdio.h>
+#include <errno.h>
+
+/* Numbers printed with %f are printed with this number of significant
+ * digits after the decimal.
+ */
+#define SIGNIFICANT_DIGITS_AFTER_DECIMAL 6
+
+/* Numbers printed with %g are assumed to only have %CAIRO_FIXED_FRAC_BITS
+ * bits of precision available after the decimal point.
+ *
+ * FIXED_POINT_DECIMAL_DIGITS specifies the minimum number of decimal
+ * digits after the decimal point required to preserve the available
+ * precision.
+ *
+ * The conversion is:
+ *
+ * <programlisting>
+ * FIXED_POINT_DECIMAL_DIGITS = ceil( CAIRO_FIXED_FRAC_BITS * ln(2)/ln(10) )
+ * </programlisting>
+ *
+ * We can replace ceil(x) with (int)(x+1) since x will never be an
+ * integer for any likely value of %CAIRO_FIXED_FRAC_BITS.
+ */
+#define FIXED_POINT_DECIMAL_DIGITS ((int)(CAIRO_FIXED_FRAC_BITS*0.301029996 + 1))
+
+void
+_cairo_output_stream_init (cairo_output_stream_t            *stream,
+			   cairo_output_stream_write_func_t  write_func,
+			   cairo_output_stream_flush_func_t  flush_func,
+			   cairo_output_stream_close_func_t  close_func)
+{
+    stream->write_func = write_func;
+    stream->flush_func = flush_func;
+    stream->close_func = close_func;
+    stream->position = 0;
+    stream->status = CAIRO_STATUS_SUCCESS;
+    stream->closed = FALSE;
+}
+
+cairo_status_t
+_cairo_output_stream_fini (cairo_output_stream_t *stream)
+{
+    return _cairo_output_stream_close (stream);
+}
+
+const cairo_output_stream_t _cairo_output_stream_nil = {
+    NULL, /* write_func */
+    NULL, /* flush_func */
+    NULL, /* close_func */
+    0,    /* position */
+    CAIRO_STATUS_NO_MEMORY,
+    FALSE /* closed */
+};
+
+static const cairo_output_stream_t _cairo_output_stream_nil_write_error = {
+    NULL, /* write_func */
+    NULL, /* flush_func */
+    NULL, /* close_func */
+    0,    /* position */
+    CAIRO_STATUS_WRITE_ERROR,
+    FALSE /* closed */
+};
+
+typedef struct _cairo_output_stream_with_closure {
+    cairo_output_stream_t	 base;
+    cairo_write_func_t		 write_func;
+    cairo_close_func_t		 close_func;
+    void			*closure;
+} cairo_output_stream_with_closure_t;
+
+
+static cairo_status_t
+closure_write (cairo_output_stream_t *stream,
+	       const unsigned char *data, unsigned int length)
+{
+    cairo_output_stream_with_closure_t *stream_with_closure =
+	(cairo_output_stream_with_closure_t *) stream;
+
+    if (stream_with_closure->write_func == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    return stream_with_closure->write_func (stream_with_closure->closure,
+					    data, length);
+}
+
+static cairo_status_t
+closure_close (cairo_output_stream_t *stream)
+{
+    cairo_output_stream_with_closure_t *stream_with_closure =
+	(cairo_output_stream_with_closure_t *) stream;
+
+    if (stream_with_closure->close_func != NULL)
+	return stream_with_closure->close_func (stream_with_closure->closure);
+    else
+	return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_output_stream_t *
+_cairo_output_stream_create (cairo_write_func_t		write_func,
+			     cairo_close_func_t		close_func,
+			     void			*closure)
+{
+    cairo_output_stream_with_closure_t *stream;
+
+    stream = _cairo_malloc (sizeof (cairo_output_stream_with_closure_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       closure_write, NULL, closure_close);
+    stream->write_func = write_func;
+    stream->close_func = close_func;
+    stream->closure = closure;
+
+    return &stream->base;
+}
+
+cairo_output_stream_t *
+_cairo_output_stream_create_in_error (cairo_status_t status)
+{
+    cairo_output_stream_t *stream;
+
+    /* check for the common ones */
+    if (status == CAIRO_STATUS_NO_MEMORY)
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    if (status == CAIRO_STATUS_WRITE_ERROR)
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil_write_error;
+
+    stream = _cairo_malloc (sizeof (cairo_output_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (stream, NULL, NULL, NULL);
+    stream->status = status;
+
+    return stream;
+}
+
+cairo_status_t
+_cairo_output_stream_flush (cairo_output_stream_t *stream)
+{
+    cairo_status_t status;
+
+    if (stream->closed)
+	return stream->status;
+
+    if (stream == &_cairo_output_stream_nil ||
+	stream == &_cairo_output_stream_nil_write_error)
+    {
+	return stream->status;
+    }
+
+    if (stream->flush_func) {
+	status = stream->flush_func (stream);
+	/* Don't overwrite a pre-existing status failure. */
+	if (stream->status == CAIRO_STATUS_SUCCESS)
+	    stream->status = status;
+    }
+
+    return stream->status;
+}
+
+cairo_status_t
+_cairo_output_stream_close (cairo_output_stream_t *stream)
+{
+    cairo_status_t status;
+
+    if (stream->closed)
+	return stream->status;
+
+    if (stream == &_cairo_output_stream_nil ||
+	stream == &_cairo_output_stream_nil_write_error)
+    {
+	return stream->status;
+    }
+
+    if (stream->close_func) {
+	status = stream->close_func (stream);
+	/* Don't overwrite a pre-existing status failure. */
+	if (stream->status == CAIRO_STATUS_SUCCESS)
+	    stream->status = status;
+    }
+
+    stream->closed = TRUE;
+
+    return stream->status;
+}
+
+cairo_status_t
+_cairo_output_stream_destroy (cairo_output_stream_t *stream)
+{
+    cairo_status_t status;
+
+    assert (stream != NULL);
+
+    if (stream == &_cairo_output_stream_nil ||
+	stream == &_cairo_output_stream_nil_write_error)
+    {
+	return stream->status;
+    }
+
+    status = _cairo_output_stream_fini (stream);
+    free (stream);
+
+    return status;
+}
+
+void
+_cairo_output_stream_write (cairo_output_stream_t *stream,
+			    const void *data, size_t length)
+{
+    if (length == 0)
+	return;
+
+    if (stream->status)
+	return;
+
+    stream->status = stream->write_func (stream, data, length);
+    stream->position += length;
+}
+
+void
+_cairo_output_stream_write_hex_string (cairo_output_stream_t *stream,
+				       const unsigned char *data,
+				       size_t length)
+{
+    const char hex_chars[] = "0123456789abcdef";
+    char buffer[2];
+    unsigned int i, column;
+
+    if (stream->status)
+	return;
+
+    for (i = 0, column = 0; i < length; i++, column++) {
+	if (column == 38) {
+	    _cairo_output_stream_write (stream, "\n", 1);
+	    column = 0;
+	}
+	buffer[0] = hex_chars[(data[i] >> 4) & 0x0f];
+	buffer[1] = hex_chars[data[i] & 0x0f];
+	_cairo_output_stream_write (stream, buffer, 2);
+    }
+}
+
+/* Format a double in a locale independent way and trim trailing
+ * zeros.  Based on code from Alex Larson <alexl@redhat.com>.
+ * https://mail.gnome.org/archives/gtk-devel-list/2001-October/msg00087.html
+ *
+ * The code in the patch is copyright Red Hat, Inc under the LGPL, but
+ * has been relicensed under the LGPL/MPL dual license for inclusion
+ * into cairo (see COPYING). -- Kristian Høgsberg <krh@redhat.com>
+ */
+static void
+_cairo_dtostr (char *buffer, size_t size, double d, cairo_bool_t limited_precision)
+{
+    const char *decimal_point;
+    int decimal_point_len;
+    char *p;
+    int decimal_len;
+    int num_zeros, decimal_digits;
+
+    /* Omit the minus sign from negative zero. */
+    if (d == 0.0)
+	d = 0.0;
+
+    decimal_point = _cairo_get_locale_decimal_point ();
+    decimal_point_len = strlen (decimal_point);
+
+    assert (decimal_point_len != 0);
+
+    if (limited_precision) {
+	snprintf (buffer, size, "%.*f", FIXED_POINT_DECIMAL_DIGITS, d);
+    } else {
+	/* Using "%f" to print numbers less than 0.1 will result in
+	 * reduced precision due to the default 6 digits after the
+	 * decimal point.
+	 *
+	 * For numbers is < 0.1, we print with maximum precision and count
+	 * the number of zeros between the decimal point and the first
+	 * significant digit. We then print the number again with the
+	 * number of decimal places that gives us the required number of
+	 * significant digits. This ensures the number is correctly
+	 * rounded.
+	 */
+	if (fabs (d) >= 0.1) {
+	    snprintf (buffer, size, "%f", d);
+	} else {
+	    snprintf (buffer, size, "%.18f", d);
+	    p = buffer;
+
+	    if (*p == '+' || *p == '-')
+		p++;
+
+	    while (_cairo_isdigit (*p))
+		p++;
+
+	    if (strncmp (p, decimal_point, decimal_point_len) == 0)
+		p += decimal_point_len;
+
+	    num_zeros = 0;
+	    while (*p++ == '0')
+		num_zeros++;
+
+	    decimal_digits = num_zeros + SIGNIFICANT_DIGITS_AFTER_DECIMAL;
+
+	    if (decimal_digits < 18)
+		snprintf (buffer, size, "%.*f", decimal_digits, d);
+	}
+    }
+    p = buffer;
+
+    if (*p == '+' || *p == '-')
+	p++;
+
+    while (_cairo_isdigit (*p))
+	p++;
+
+    if (strncmp (p, decimal_point, decimal_point_len) == 0) {
+	*p = '.';
+	decimal_len = strlen (p + decimal_point_len);
+	memmove (p + 1, p + decimal_point_len, decimal_len);
+	p[1 + decimal_len] = 0;
+
+	/* Remove trailing zeros and decimal point if possible. */
+	for (p = p + decimal_len; *p == '0'; p--)
+	    *p = 0;
+
+	if (*p == '.') {
+	    *p = 0;
+	    p--;
+	}
+    }
+}
+
+enum {
+    LENGTH_MODIFIER_LONG = 0x100
+};
+
+/* Here's a limited reimplementation of printf.  The reason for doing
+ * this is primarily to special case handling of doubles.  We want
+ * locale independent formatting of doubles and we want to trim
+ * trailing zeros.  This is handled by dtostr() above, and the code
+ * below handles everything else by calling snprintf() to do the
+ * formatting.  This functionality is only for internal use and we
+ * only implement the formats we actually use.
+ */
+void
+_cairo_output_stream_vprintf (cairo_output_stream_t *stream,
+			      const char *fmt, va_list ap)
+{
+#define SINGLE_FMT_BUFFER_SIZE 32
+    char buffer[512], single_fmt[SINGLE_FMT_BUFFER_SIZE];
+    int single_fmt_length;
+    char *p;
+    const char *f, *start;
+    int length_modifier, width;
+    cairo_bool_t var_width;
+
+    if (stream->status)
+	return;
+
+    f = fmt;
+    p = buffer;
+    while (*f != '\0') {
+	if (p == buffer + sizeof (buffer)) {
+	    _cairo_output_stream_write (stream, buffer, sizeof (buffer));
+	    p = buffer;
+	}
+
+	if (*f != '%') {
+	    *p++ = *f++;
+	    continue;
+	}
+
+	start = f;
+	f++;
+
+	if (*f == '0')
+	    f++;
+
+        var_width = FALSE;
+        if (*f == '*') {
+            var_width = TRUE;
+	    f++;
+        }
+
+	while (_cairo_isdigit (*f))
+	    f++;
+
+	length_modifier = 0;
+	if (*f == 'l') {
+	    length_modifier = LENGTH_MODIFIER_LONG;
+	    f++;
+	}
+
+	/* The only format strings exist in the cairo implementation
+	 * itself. So there's an internal consistency problem if any
+	 * of them is larger than our format buffer size. */
+	single_fmt_length = f - start + 1;
+	assert (single_fmt_length + 1 <= SINGLE_FMT_BUFFER_SIZE);
+
+	/* Reuse the format string for this conversion. */
+	memcpy (single_fmt, start, single_fmt_length);
+	single_fmt[single_fmt_length] = '\0';
+
+	/* Flush contents of buffer before snprintf()'ing into it. */
+	_cairo_output_stream_write (stream, buffer, p - buffer);
+
+	/* We group signed and unsigned together in this switch, the
+	 * only thing that matters here is the size of the arguments,
+	 * since we're just passing the data through to sprintf(). */
+	switch (*f | length_modifier) {
+	case '%':
+	    buffer[0] = *f;
+	    buffer[1] = 0;
+	    break;
+	case 'd':
+	case 'u':
+	case 'o':
+	case 'x':
+	case 'X':
+            if (var_width) {
+                width = va_arg (ap, int);
+                snprintf (buffer, sizeof buffer,
+                          single_fmt, width, va_arg (ap, int));
+            } else {
+                snprintf (buffer, sizeof buffer, single_fmt, va_arg (ap, int));
+            }
+	    break;
+	case 'd' | LENGTH_MODIFIER_LONG:
+	case 'u' | LENGTH_MODIFIER_LONG:
+	case 'o' | LENGTH_MODIFIER_LONG:
+	case 'x' | LENGTH_MODIFIER_LONG:
+	case 'X' | LENGTH_MODIFIER_LONG:
+            if (var_width) {
+                width = va_arg (ap, int);
+                snprintf (buffer, sizeof buffer,
+                          single_fmt, width, va_arg (ap, long int));
+            } else {
+                snprintf (buffer, sizeof buffer,
+                          single_fmt, va_arg (ap, long int));
+            }
+	    break;
+	case 's': {
+	    /* Write out strings as they may be larger than the buffer. */
+	    const char *s = va_arg (ap, const char *);
+	    int len = strlen(s);
+	    _cairo_output_stream_write (stream, s, len);
+	    buffer[0] = 0;
+	    }
+	    break;
+	case 'f':
+	    _cairo_dtostr (buffer, sizeof buffer, va_arg (ap, double), FALSE);
+	    break;
+	case 'g':
+	    _cairo_dtostr (buffer, sizeof buffer, va_arg (ap, double), TRUE);
+	    break;
+	case 'c':
+	    buffer[0] = va_arg (ap, int);
+	    buffer[1] = 0;
+	    break;
+	default:
+	    ASSERT_NOT_REACHED;
+	}
+	p = buffer + strlen (buffer);
+	f++;
+    }
+
+    _cairo_output_stream_write (stream, buffer, p - buffer);
+}
+
+void
+_cairo_output_stream_printf (cairo_output_stream_t *stream,
+			     const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start (ap, fmt);
+
+    _cairo_output_stream_vprintf (stream, fmt, ap);
+
+    va_end (ap);
+}
+
+/* Matrix elements that are smaller than the value of the largest element * MATRIX_ROUNDING_TOLERANCE
+ * are rounded down to zero. */
+#define MATRIX_ROUNDING_TOLERANCE 1e-12
+
+void
+_cairo_output_stream_print_matrix (cairo_output_stream_t *stream,
+				   const cairo_matrix_t  *matrix)
+{
+    cairo_matrix_t m;
+    double s, e;
+
+    m = *matrix;
+    s = fabs (m.xx);
+    if (fabs (m.xy) > s)
+	s = fabs (m.xy);
+    if (fabs (m.yx) > s)
+	s = fabs (m.yx);
+    if (fabs (m.yy) > s)
+	s = fabs (m.yy);
+
+    e = s * MATRIX_ROUNDING_TOLERANCE;
+    if (fabs(m.xx) < e)
+	m.xx = 0;
+    if (fabs(m.xy) < e)
+	m.xy = 0;
+    if (fabs(m.yx) < e)
+	m.yx = 0;
+    if (fabs(m.yy) < e)
+	m.yy = 0;
+    if (fabs(m.x0) < e)
+	m.x0 = 0;
+    if (fabs(m.y0) < e)
+	m.y0 = 0;
+
+    _cairo_output_stream_printf (stream,
+				 "%f %f %f %f %f %f",
+				 m.xx, m.yx, m.xy, m.yy, m.x0, m.y0);
+}
+
+long
+_cairo_output_stream_get_position (cairo_output_stream_t *stream)
+{
+    return stream->position;
+}
+
+cairo_status_t
+_cairo_output_stream_get_status (cairo_output_stream_t *stream)
+{
+    return stream->status;
+}
+
+/* Maybe this should be a configure time option, so embedded targets
+ * don't have to pull in stdio. */
+
+
+typedef struct _stdio_stream {
+    cairo_output_stream_t	 base;
+    FILE			*file;
+} stdio_stream_t;
+
+static cairo_status_t
+stdio_write (cairo_output_stream_t *base,
+	     const unsigned char *data, unsigned int length)
+{
+    stdio_stream_t *stream = (stdio_stream_t *) base;
+
+    if (fwrite (data, 1, length, stream->file) != length)
+	return _cairo_error (CAIRO_STATUS_WRITE_ERROR);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+stdio_flush (cairo_output_stream_t *base)
+{
+    stdio_stream_t *stream = (stdio_stream_t *) base;
+
+    fflush (stream->file);
+
+    if (ferror (stream->file))
+	return _cairo_error (CAIRO_STATUS_WRITE_ERROR);
+    else
+	return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+stdio_close (cairo_output_stream_t *base)
+{
+    cairo_status_t status;
+    stdio_stream_t *stream = (stdio_stream_t *) base;
+
+    status = stdio_flush (base);
+
+    fclose (stream->file);
+
+    return status;
+}
+
+cairo_output_stream_t *
+_cairo_output_stream_create_for_file (FILE *file)
+{
+    stdio_stream_t *stream;
+
+    if (file == NULL) {
+	_cairo_error_throw (CAIRO_STATUS_WRITE_ERROR);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil_write_error;
+    }
+
+    stream = _cairo_malloc (sizeof *stream);
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       stdio_write, stdio_flush, stdio_flush);
+    stream->file = file;
+
+    return &stream->base;
+}
+
+cairo_output_stream_t *
+_cairo_output_stream_create_for_filename (const char *filename)
+{
+    stdio_stream_t *stream;
+    FILE *file;
+    cairo_status_t status;
+
+    if (filename == NULL)
+	return _cairo_null_stream_create ();
+
+    status = _cairo_fopen (filename, "wb", &file);
+
+    if (status != CAIRO_STATUS_SUCCESS)
+	return _cairo_output_stream_create_in_error (status);
+
+    if (file == NULL) {
+	switch (errno) {
+	case ENOMEM:
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+	default:
+	    _cairo_error_throw (CAIRO_STATUS_WRITE_ERROR);
+	    return (cairo_output_stream_t *) &_cairo_output_stream_nil_write_error;
+	}
+    }
+
+    stream = _cairo_malloc (sizeof *stream);
+    if (unlikely (stream == NULL)) {
+	fclose (file);
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       stdio_write, stdio_flush, stdio_close);
+    stream->file = file;
+
+    return &stream->base;
+}
+
+
+typedef struct _memory_stream {
+    cairo_output_stream_t	base;
+    cairo_array_t		array;
+} memory_stream_t;
+
+static cairo_status_t
+memory_write (cairo_output_stream_t *base,
+	      const unsigned char *data, unsigned int length)
+{
+    memory_stream_t *stream = (memory_stream_t *) base;
+
+    return _cairo_array_append_multiple (&stream->array, data, length);
+}
+
+static cairo_status_t
+memory_close (cairo_output_stream_t *base)
+{
+    memory_stream_t *stream = (memory_stream_t *) base;
+
+    _cairo_array_fini (&stream->array);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_output_stream_t *
+_cairo_memory_stream_create (void)
+{
+    memory_stream_t *stream;
+
+    stream = _cairo_malloc (sizeof *stream);
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base, memory_write, NULL, memory_close);
+    _cairo_array_init (&stream->array, 1);
+
+    return &stream->base;
+}
+
+cairo_status_t
+_cairo_memory_stream_destroy (cairo_output_stream_t *abstract_stream,
+			      unsigned char **data_out,
+			      unsigned long *length_out)
+{
+    memory_stream_t *stream;
+    cairo_status_t status;
+
+    status = abstract_stream->status;
+    if (unlikely (status))
+	return _cairo_output_stream_destroy (abstract_stream);
+
+    stream = (memory_stream_t *) abstract_stream;
+
+    *length_out = _cairo_array_num_elements (&stream->array);
+    *data_out = _cairo_malloc (*length_out);
+    if (unlikely (*data_out == NULL)) {
+	status = _cairo_output_stream_destroy (abstract_stream);
+	assert (status == CAIRO_STATUS_SUCCESS);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+    memcpy (*data_out, _cairo_array_index (&stream->array, 0), *length_out);
+
+    return _cairo_output_stream_destroy (abstract_stream);
+}
+
+void
+_cairo_memory_stream_copy (cairo_output_stream_t *base,
+			   cairo_output_stream_t *dest)
+{
+    memory_stream_t *stream = (memory_stream_t *) base;
+
+    if (dest->status)
+	return;
+
+    if (base->status) {
+	dest->status = base->status;
+	return;
+    }
+
+    _cairo_output_stream_write (dest,
+				_cairo_array_index (&stream->array, 0),
+				_cairo_array_num_elements (&stream->array));
+}
+
+int
+_cairo_memory_stream_length (cairo_output_stream_t *base)
+{
+    memory_stream_t *stream = (memory_stream_t *) base;
+
+    return _cairo_array_num_elements (&stream->array);
+}
+
+static cairo_status_t
+null_write (cairo_output_stream_t *base,
+	    const unsigned char *data, unsigned int length)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_output_stream_t *
+_cairo_null_stream_create (void)
+{
+    cairo_output_stream_t *stream;
+
+    stream = _cairo_malloc (sizeof *stream);
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (stream, null_write, NULL, NULL);
+
+    return stream;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-paginated-private.h b/libs/cairo-1.16.0/src/cairo-paginated-private.h
new file mode 100644
index 0000000..b85a5db
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-paginated-private.h
@@ -0,0 +1,184 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_PAGINATED_H
+#define CAIRO_PAGINATED_H
+
+#include "cairoint.h"
+
+struct _cairo_paginated_surface_backend {
+    /* Optional. Will be called once for each page.
+     *
+     * Note: With respect to the order of drawing operations as seen
+     * by the target, this call will occur before any drawing
+     * operations for the relevant page. However, with respect to the
+     * function calls as made by the user, this call will be *after*
+     * any drawing operations for the page, (that is, it will occur
+     * during the user's call to cairo_show_page or cairo_copy_page).
+     */
+    cairo_warn cairo_int_status_t
+    (*start_page)		(void			*surface);
+
+    /* Required. Will be called twice for each page, once with an
+     * argument of CAIRO_PAGINATED_MODE_ANALYZE and once with
+     * CAIRO_PAGINATED_MODE_RENDER. See more details in the
+     * documentation for _cairo_paginated_surface_create below.
+     */
+    cairo_warn cairo_int_status_t
+    (*set_paginated_mode)	(void			*surface,
+				 cairo_paginated_mode_t	 mode);
+
+    /* Optional. Specifies the smallest box that encloses all objects
+     * on the page. Will be called at the end of the ANALYZE phase but
+     * before the mode is changed to RENDER.
+     */
+    cairo_warn cairo_int_status_t
+    (*set_bounding_box)	(void		*surface,
+			 cairo_box_t	*bbox);
+
+    /* Optional. Indicates whether the page requires fallback images.
+     * Will be called at the end of the ANALYZE phase but before the
+     * mode is changed to RENDER.
+     */
+    cairo_warn cairo_int_status_t
+    (*set_fallback_images_required) (void	    *surface,
+				     cairo_bool_t    fallbacks_required);
+
+    cairo_bool_t
+    (*supports_fine_grained_fallbacks) (void	    *surface);
+
+    /* Optional. Indicates whether the page requires a thumbnail image to be
+     * supplied. If a thumbnail is required, set width, heigh to size required
+     * and return TRUE.
+     */
+    cairo_bool_t
+    (*requires_thumbnail_image) (void	*surface,
+				 int    *width,
+				 int    *height);
+
+    /* If thumbbail image requested, this function will be called before
+     * _show_page().
+     */
+    cairo_warn cairo_int_status_t
+    (*set_thumbnail_image) (void	          *surface,
+			    cairo_image_surface_t *image);
+};
+
+/* A #cairo_paginated_surface_t provides a very convenient wrapper that
+ * is well-suited for doing the analysis common to most surfaces that
+ * have paginated output, (that is, things directed at printers, or
+ * for saving content in files such as PostScript or PDF files).
+ *
+ * To use the paginated surface, you'll first need to create your
+ * 'real' surface using _cairo_surface_init() and the standard
+ * #cairo_surface_backend_t. Then you also call
+ * _cairo_paginated_surface_create which takes its own, much simpler,
+ * #cairo_paginated_surface_backend_t. You are free to return the result
+ * of _cairo_paginated_surface_create() from your public
+ * cairo_<foo>_surface_create(). The paginated backend will be careful
+ * to not let the user see that they really got a "wrapped"
+ * surface. See test-paginated-surface.c for a fairly minimal example
+ * of a paginated-using surface. That should be a reasonable example
+ * to follow.
+ *
+ * What the paginated surface does is first save all drawing
+ * operations for a page into a recording-surface. Then when the user calls
+ * cairo_show_page(), the paginated surface performs the following
+ * sequence of operations (using the backend functions passed to
+ * cairo_paginated_surface_create()):
+ *
+ * 1. Calls start_page() (if not %NULL). At this point, it is appropriate
+ *    for the target to emit any page-specific header information into
+ *    its output.
+ *
+ * 2. Calls set_paginated_mode() with an argument of %CAIRO_PAGINATED_MODE_ANALYZE
+ *
+ * 3. Replays the recording-surface to the target surface, (with an
+ *    analysis surface inserted between which watches the return value
+ *    from each operation). This analysis stage is used to decide which
+ *    operations will require fallbacks.
+ *
+ * 4. Calls set_bounding_box() to provide the target surface with the
+ *    tight bounding box of the page.
+ *
+ * 5. Calls set_paginated_mode() with an argument of %CAIRO_PAGINATED_MODE_RENDER
+ *
+ * 6. Replays a subset of the recording-surface operations to the target surface
+ *
+ * 7. Calls set_paginated_mode() with an argument of %CAIRO_PAGINATED_MODE_FALLBACK
+ *
+ * 8. Replays the remaining operations to an image surface, sets an
+ *    appropriate clip on the target, then paints the resulting image
+ *    surface to the target.
+ *
+ * So, the target will see drawing operations during three separate
+ * stages, (ANALYZE, RENDER and FALLBACK). During the ANALYZE phase
+ * the target should not actually perform any rendering, (for example,
+ * if performing output to a file, no output should be generated
+ * during this stage). Instead the drawing functions simply need to
+ * return %CAIRO_STATUS_SUCCESS or %CAIRO_INT_STATUS_UNSUPPORTED to
+ * indicate whether rendering would be supported. And it should do
+ * this as quickly as possible. The FALLBACK phase allows the surface
+ * to distinguish fallback images from native rendering in case they
+ * need to be handled as a special case.
+ *
+ * Note: The paginated surface layer assumes that the target surface
+ * is "blank" by default at the beginning of each page, without any
+ * need for an explicit erase operation, (as opposed to an image
+ * surface, for example, which might have uninitialized content
+ * originally). As such, it optimizes away CLEAR operations that
+ * happen at the beginning of each page---the target surface will not
+ * even see these operations.
+ */
+cairo_private cairo_surface_t *
+_cairo_paginated_surface_create (cairo_surface_t				*target,
+				 cairo_content_t				 content,
+				 const cairo_paginated_surface_backend_t	*backend);
+
+cairo_private cairo_surface_t *
+_cairo_paginated_surface_get_target (cairo_surface_t *surface);
+
+cairo_private cairo_surface_t *
+_cairo_paginated_surface_get_recording (cairo_surface_t *surface);
+
+cairo_private cairo_bool_t
+_cairo_surface_is_paginated (cairo_surface_t *surface);
+
+cairo_private cairo_status_t
+_cairo_paginated_surface_set_size (cairo_surface_t 	*surface,
+				   int			 width,
+				   int			 height);
+
+#endif /* CAIRO_PAGINATED_H */
diff --git a/libs/cairo-1.16.0/src/cairo-paginated-surface-private.h b/libs/cairo-1.16.0/src/cairo-paginated-surface-private.h
new file mode 100644
index 0000000..ebf4b34
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-paginated-surface-private.h
@@ -0,0 +1,62 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_PAGINATED_SURFACE_H
+#define CAIRO_PAGINATED_SURFACE_H
+
+#include "cairo.h"
+
+#include "cairo-surface-private.h"
+
+typedef struct _cairo_paginated_surface {
+    cairo_surface_t base;
+
+    /* The target surface to hold the final result. */
+    cairo_surface_t *target;
+
+    cairo_content_t content;
+
+    /* Paginated-surface specific functions for the target */
+    const cairo_paginated_surface_backend_t *backend;
+
+    /* A cairo_recording_surface to record all operations. To be replayed
+     * against target, and also against image surface as necessary for
+     * fallbacks. */
+    cairo_surface_t *recording_surface;
+
+    int page_num;
+} cairo_paginated_surface_t;
+
+#endif /* CAIRO_PAGINATED_SURFACE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-paginated-surface.c b/libs/cairo-1.16.0/src/cairo-paginated-surface.c
new file mode 100644
index 0000000..fc16f79
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-paginated-surface.c
@@ -0,0 +1,811 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2007 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ *	Keith Packard <keithp@keithp.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+/* The paginated surface layer exists to provide as much code sharing
+ * as possible for the various paginated surface backends in cairo
+ * (PostScript, PDF, etc.). See cairo-paginated-private.h for
+ * more details on how it works and how to use it.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-paginated-private.h"
+#include "cairo-paginated-surface-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-analysis-surface-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-subsurface-inline.h"
+
+static const cairo_surface_backend_t cairo_paginated_surface_backend;
+
+static cairo_int_status_t
+_cairo_paginated_surface_show_page (void *abstract_surface);
+
+static cairo_surface_t *
+_cairo_paginated_surface_create_similar (void			*abstract_surface,
+					 cairo_content_t	 content,
+					 int			 width,
+					 int			 height)
+{
+    cairo_rectangle_t rect;
+    rect.x = rect.y = 0.;
+    rect.width = width;
+    rect.height = height;
+    return cairo_recording_surface_create (content, &rect);
+}
+
+static cairo_surface_t *
+_create_recording_surface_for_target (cairo_surface_t *target,
+				      cairo_content_t content)
+{
+    cairo_rectangle_int_t rect;
+
+    if (_cairo_surface_get_extents (target, &rect)) {
+	cairo_rectangle_t recording_extents;
+
+	recording_extents.x = rect.x;
+	recording_extents.y = rect.y;
+	recording_extents.width = rect.width;
+	recording_extents.height = rect.height;
+
+	return cairo_recording_surface_create (content, &recording_extents);
+    } else {
+	return cairo_recording_surface_create (content, NULL);
+    }
+}
+
+cairo_surface_t *
+_cairo_paginated_surface_create (cairo_surface_t				*target,
+				 cairo_content_t				 content,
+				 const cairo_paginated_surface_backend_t	*backend)
+{
+    cairo_paginated_surface_t *surface;
+    cairo_status_t status;
+
+    surface = _cairo_malloc (sizeof (cairo_paginated_surface_t));
+    if (unlikely (surface == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL;
+    }
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_paginated_surface_backend,
+			 NULL, /* device */
+			 content,
+			 target->is_vector);
+
+    /* Override surface->base.type with target's type so we don't leak
+     * evidence of the paginated wrapper out to the user. */
+    surface->base.type = target->type;
+
+    surface->target = cairo_surface_reference (target);
+
+    surface->content = content;
+    surface->backend = backend;
+
+    surface->recording_surface = _create_recording_surface_for_target (target, content);
+    status = surface->recording_surface->status;
+    if (unlikely (status))
+	goto FAIL_CLEANUP_SURFACE;
+
+    surface->page_num = 1;
+    surface->base.is_clear = TRUE;
+
+    return &surface->base;
+
+  FAIL_CLEANUP_SURFACE:
+    cairo_surface_destroy (target);
+    free (surface);
+  FAIL:
+    return _cairo_surface_create_in_error (status);
+}
+
+cairo_bool_t
+_cairo_surface_is_paginated (cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_paginated_surface_backend;
+}
+
+cairo_surface_t *
+_cairo_paginated_surface_get_target (cairo_surface_t *surface)
+{
+    cairo_paginated_surface_t *paginated_surface;
+
+    assert (_cairo_surface_is_paginated (surface));
+
+    paginated_surface = (cairo_paginated_surface_t *) surface;
+    return paginated_surface->target;
+}
+
+cairo_surface_t *
+_cairo_paginated_surface_get_recording (cairo_surface_t *surface)
+{
+    cairo_paginated_surface_t *paginated_surface;
+
+    assert (_cairo_surface_is_paginated (surface));
+
+    paginated_surface = (cairo_paginated_surface_t *) surface;
+    return paginated_surface->recording_surface;
+}
+
+cairo_status_t
+_cairo_paginated_surface_set_size (cairo_surface_t	*surface,
+				   int			 width,
+				   int			 height)
+{
+    cairo_paginated_surface_t *paginated_surface;
+    cairo_status_t status;
+    cairo_rectangle_t recording_extents;
+
+    assert (_cairo_surface_is_paginated (surface));
+
+    paginated_surface = (cairo_paginated_surface_t *) surface;
+
+    recording_extents.x = 0;
+    recording_extents.y = 0;
+    recording_extents.width = width;
+    recording_extents.height = height;
+
+    cairo_surface_destroy (paginated_surface->recording_surface);
+    paginated_surface->recording_surface = cairo_recording_surface_create (paginated_surface->content,
+									   &recording_extents);
+    status = paginated_surface->recording_surface->status;
+    if (unlikely (status))
+	return _cairo_surface_set_error (surface, status);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_paginated_surface_finish (void *abstract_surface)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (! surface->base.is_clear || surface->page_num == 1) {
+	/* Bypass some of the sanity checking in cairo-surface.c, as we
+	 * know that the surface is finished...
+	 */
+	status = _cairo_paginated_surface_show_page (surface);
+    }
+
+     /* XXX We want to propagate any errors from destroy(), but those are not
+      * returned via the api. So we need to explicitly finish the target,
+      * and check the status afterwards. However, we can only call finish()
+      * on the target, if we own it.
+      */
+    if (CAIRO_REFERENCE_COUNT_GET_VALUE (&surface->target->ref_count) == 1)
+	cairo_surface_finish (surface->target);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = cairo_surface_status (surface->target);
+    cairo_surface_destroy (surface->target);
+
+    cairo_surface_finish (surface->recording_surface);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = cairo_surface_status (surface->recording_surface);
+    cairo_surface_destroy (surface->recording_surface);
+
+    return status;
+}
+
+static cairo_surface_t *
+_cairo_paginated_surface_create_image_surface (void	       *abstract_surface,
+					       int		width,
+					       int		height)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+    cairo_surface_t *image;
+    cairo_font_options_t options;
+
+    image = _cairo_image_surface_create_with_content (surface->content,
+						      width,
+						      height);
+
+    cairo_surface_get_font_options (&surface->base, &options);
+    _cairo_surface_set_font_options (image, &options);
+
+    return image;
+}
+
+static cairo_surface_t *
+_cairo_paginated_surface_source (void	       *abstract_surface,
+				 cairo_rectangle_int_t *extents)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+    return _cairo_surface_get_source (surface->target, extents);
+}
+
+static cairo_status_t
+_cairo_paginated_surface_acquire_source_image (void	       *abstract_surface,
+					       cairo_image_surface_t **image_out,
+					       void		   **image_extra)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+    cairo_bool_t is_bounded;
+    cairo_surface_t *image;
+    cairo_status_t status;
+    cairo_rectangle_int_t extents;
+
+    is_bounded = _cairo_surface_get_extents (surface->target, &extents);
+    if (! is_bounded)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    image = _cairo_paginated_surface_create_image_surface (surface,
+							   extents.width,
+							   extents.height);
+
+    status = _cairo_recording_surface_replay (surface->recording_surface, image);
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	return status;
+    }
+
+    *image_out = (cairo_image_surface_t*) image;
+    *image_extra = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_paginated_surface_release_source_image (void	  *abstract_surface,
+					       cairo_image_surface_t *image,
+					       void	       *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_int_status_t
+_paint_thumbnail_image (cairo_paginated_surface_t *surface,
+			int                        width,
+			int                        height)
+{
+    cairo_surface_pattern_t pattern;
+    cairo_rectangle_int_t extents;
+    double x_scale;
+    double y_scale;
+    cairo_surface_t *image = NULL;
+    cairo_surface_t *opaque = NULL;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    _cairo_surface_get_extents (surface->target, &extents);
+    x_scale = (double)width / extents.width;
+    y_scale = (double)height / extents.height;
+
+    image = _cairo_paginated_surface_create_image_surface (surface, width, height);
+    cairo_surface_set_device_scale (image, x_scale, y_scale);
+    cairo_surface_set_device_offset (image, -extents.x*x_scale, -extents.y*y_scale);
+    status = _cairo_recording_surface_replay (surface->recording_surface, image);
+    if (unlikely (status))
+	goto cleanup;
+
+    /* flatten transparency */
+
+    opaque = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
+    if (unlikely (opaque->status)) {
+	status = opaque->status;
+	goto cleanup;
+    }
+
+    status = _cairo_surface_paint (opaque,
+				   CAIRO_OPERATOR_SOURCE,
+				   &_cairo_pattern_white.base,
+				   NULL);
+    if (unlikely (status))
+	goto cleanup;
+
+    _cairo_pattern_init_for_surface (&pattern, image);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    status = _cairo_surface_paint (opaque, CAIRO_OPERATOR_OVER, &pattern.base, NULL);
+    _cairo_pattern_fini (&pattern.base);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = surface->backend->set_thumbnail_image (surface->target, (cairo_image_surface_t *)opaque);
+
+  cleanup:
+    if (image)
+	cairo_surface_destroy (image);
+    if (opaque)
+	cairo_surface_destroy (opaque);
+
+    return status;
+}
+
+static cairo_int_status_t
+_paint_fallback_image (cairo_paginated_surface_t *surface,
+		       cairo_rectangle_int_t     *rect)
+{
+    double x_scale = surface->base.x_fallback_resolution / surface->target->x_resolution;
+    double y_scale = surface->base.y_fallback_resolution / surface->target->y_resolution;
+    int x, y, width, height;
+    cairo_status_t status;
+    cairo_surface_t *image;
+    cairo_surface_pattern_t pattern;
+    cairo_clip_t *clip;
+
+    x = rect->x;
+    y = rect->y;
+    width = rect->width;
+    height = rect->height;
+    image = _cairo_paginated_surface_create_image_surface (surface,
+							   ceil (width  * x_scale),
+							   ceil (height * y_scale));
+    cairo_surface_set_device_scale (image, x_scale, y_scale);
+    /* set_device_offset just sets the x0/y0 components of the matrix;
+     * so we have to do the scaling manually. */
+    cairo_surface_set_device_offset (image, -x*x_scale, -y*y_scale);
+
+    status = _cairo_recording_surface_replay (surface->recording_surface, image);
+    if (unlikely (status))
+	goto CLEANUP_IMAGE;
+
+    _cairo_pattern_init_for_surface (&pattern, image);
+    cairo_matrix_init (&pattern.base.matrix,
+		       x_scale, 0, 0, y_scale, -x*x_scale, -y*y_scale);
+    /* the fallback should be rendered at native resolution, so disable
+     * filtering (if possible) to avoid introducing potential artifacts. */
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+
+    clip = _cairo_clip_intersect_rectangle (NULL, rect);
+    status = _cairo_surface_paint (surface->target,
+				   CAIRO_OPERATOR_SOURCE,
+				   &pattern.base, clip);
+    _cairo_clip_destroy (clip);
+    _cairo_pattern_fini (&pattern.base);
+
+CLEANUP_IMAGE:
+    cairo_surface_destroy (image);
+
+    return status;
+}
+
+static cairo_int_status_t
+_paint_page (cairo_paginated_surface_t *surface)
+{
+    cairo_surface_t *analysis;
+    cairo_int_status_t status;
+    cairo_bool_t has_supported, has_page_fallback, has_finegrained_fallback;
+
+    if (unlikely (surface->target->status))
+	return surface->target->status;
+
+    analysis = _cairo_analysis_surface_create (surface->target);
+    if (unlikely (analysis->status))
+	return _cairo_surface_set_error (surface->target, analysis->status);
+
+    status = surface->backend->set_paginated_mode (surface->target,
+	                                  CAIRO_PAGINATED_MODE_ANALYZE);
+    if (unlikely (status))
+	goto FAIL;
+
+    status = _cairo_recording_surface_replay_and_create_regions (surface->recording_surface,
+								 NULL, analysis, FALSE);
+    if (status)
+	goto FAIL;
+
+    assert (analysis->status == CAIRO_STATUS_SUCCESS);
+
+     if (surface->backend->set_bounding_box) {
+	 cairo_box_t bbox;
+
+	 _cairo_analysis_surface_get_bounding_box (analysis, &bbox);
+	 status = surface->backend->set_bounding_box (surface->target, &bbox);
+	 if (unlikely (status))
+	     goto FAIL;
+     }
+
+    if (surface->backend->set_fallback_images_required) {
+	cairo_bool_t has_fallbacks = _cairo_analysis_surface_has_unsupported (analysis);
+
+	status = surface->backend->set_fallback_images_required (surface->target,
+								 has_fallbacks);
+	if (unlikely (status))
+	    goto FAIL;
+    }
+
+    /* Finer grained fallbacks are currently only supported for some
+     * surface types */
+    if (surface->backend->supports_fine_grained_fallbacks != NULL &&
+	surface->backend->supports_fine_grained_fallbacks (surface->target))
+    {
+	has_supported = _cairo_analysis_surface_has_supported (analysis);
+	has_page_fallback = FALSE;
+	has_finegrained_fallback = _cairo_analysis_surface_has_unsupported (analysis);
+    }
+    else
+    {
+	if (_cairo_analysis_surface_has_unsupported (analysis)) {
+	    has_supported = FALSE;
+	    has_page_fallback = TRUE;
+	} else {
+	    has_supported = TRUE;
+	    has_page_fallback = FALSE;
+	}
+	has_finegrained_fallback = FALSE;
+    }
+
+    if (has_supported) {
+	status = surface->backend->set_paginated_mode (surface->target,
+						       CAIRO_PAGINATED_MODE_RENDER);
+	if (unlikely (status))
+	    goto FAIL;
+
+	status = _cairo_recording_surface_replay_region (surface->recording_surface,
+							 NULL,
+							 surface->target,
+							 CAIRO_RECORDING_REGION_NATIVE);
+	assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
+	if (unlikely (status))
+	    goto FAIL;
+    }
+
+    if (has_page_fallback) {
+	cairo_rectangle_int_t extents;
+	cairo_bool_t is_bounded;
+
+	status = surface->backend->set_paginated_mode (surface->target,
+						       CAIRO_PAGINATED_MODE_FALLBACK);
+	if (unlikely (status))
+	    goto FAIL;
+
+	is_bounded = _cairo_surface_get_extents (surface->target, &extents);
+	if (! is_bounded) {
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	    goto FAIL;
+	}
+
+	status = _paint_fallback_image (surface, &extents);
+	if (unlikely (status))
+	    goto FAIL;
+    }
+
+    if (has_finegrained_fallback) {
+        cairo_region_t *region;
+        int num_rects, i;
+
+	status = surface->backend->set_paginated_mode (surface->target,
+		                              CAIRO_PAGINATED_MODE_FALLBACK);
+	if (unlikely (status))
+	    goto FAIL;
+
+	region = _cairo_analysis_surface_get_unsupported (analysis);
+
+	num_rects = cairo_region_num_rectangles (region);
+	for (i = 0; i < num_rects; i++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (region, i, &rect);
+	    status = _paint_fallback_image (surface, &rect);
+	    if (unlikely (status))
+		goto FAIL;
+	}
+    }
+
+    if (surface->backend->requires_thumbnail_image) {
+	int width, height;
+
+	if (surface->backend->requires_thumbnail_image (surface->target, &width, &height))
+	    _paint_thumbnail_image (surface, width, height);
+    }
+
+  FAIL:
+    cairo_surface_destroy (analysis);
+
+    return _cairo_surface_set_error (surface->target, status);
+}
+
+static cairo_status_t
+_start_page (cairo_paginated_surface_t *surface)
+{
+    if (surface->target->status)
+	return surface->target->status;
+
+    if (! surface->backend->start_page)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_surface_set_error (surface->target,
+	                        surface->backend->start_page (surface->target));
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_copy_page (void *abstract_surface)
+{
+    cairo_status_t status;
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    status = _start_page (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _paint_page (surface);
+    if (unlikely (status))
+	return status;
+
+    surface->page_num++;
+
+    /* XXX: It might make sense to add some support here for calling
+     * cairo_surface_copy_page on the target surface. It would be an
+     * optimization for the output, but the interaction with image
+     * fallbacks gets tricky. For now, we just let the target see a
+     * show_page and we implement the copying by simply not destroying
+     * the recording-surface. */
+
+    cairo_surface_show_page (surface->target);
+    return cairo_surface_status (surface->target);
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_show_page (void *abstract_surface)
+{
+    cairo_status_t status;
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    status = _start_page (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _paint_page (surface);
+    if (unlikely (status))
+	return status;
+
+    cairo_surface_show_page (surface->target);
+    status = surface->target->status;
+    if (unlikely (status))
+	return status;
+
+    status = surface->recording_surface->status;
+    if (unlikely (status))
+	return status;
+
+    if (! surface->base.finished) {
+	cairo_surface_destroy (surface->recording_surface);
+
+	surface->recording_surface = _create_recording_surface_for_target (surface->target,
+									   surface->content);
+	status = surface->recording_surface->status;
+	if (unlikely (status))
+	    return status;
+
+	surface->page_num++;
+	surface->base.is_clear = TRUE;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_paginated_surface_get_extents (void	              *abstract_surface,
+				      cairo_rectangle_int_t   *rectangle)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_get_extents (surface->target, rectangle);
+}
+
+static void
+_cairo_paginated_surface_get_font_options (void                  *abstract_surface,
+					   cairo_font_options_t  *options)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    cairo_surface_get_font_options (surface->target, options);
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_paint (void			*abstract_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				const cairo_clip_t	*clip)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_paint (surface->recording_surface, op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_mask (void		*abstract_surface,
+			       cairo_operator_t	 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_pattern_t	*mask,
+			       const cairo_clip_t		*clip)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_mask (surface->recording_surface, op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_stroke (void			*abstract_surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 const cairo_stroke_style_t	*style,
+				 const cairo_matrix_t		*ctm,
+				 const cairo_matrix_t		*ctm_inverse,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t		*clip)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_stroke (surface->recording_surface, op, source,
+				  path, style,
+				  ctm, ctm_inverse,
+				  tolerance, antialias,
+				  clip);
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_fill (void			*abstract_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_path_fixed_t	*path,
+			       cairo_fill_rule_t	 fill_rule,
+			       double			 tolerance,
+			       cairo_antialias_t	 antialias,
+			       const cairo_clip_t		*clip)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_fill (surface->recording_surface, op, source,
+				path, fill_rule,
+				tolerance, antialias,
+				clip);
+}
+
+static cairo_bool_t
+_cairo_paginated_surface_has_show_text_glyphs (void *abstract_surface)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return cairo_surface_has_show_text_glyphs (surface->target);
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_show_text_glyphs (void			      *abstract_surface,
+					   cairo_operator_t	       op,
+					   const cairo_pattern_t      *source,
+					   const char		      *utf8,
+					   int			       utf8_len,
+					   cairo_glyph_t	      *glyphs,
+					   int			       num_glyphs,
+					   const cairo_text_cluster_t *clusters,
+					   int			       num_clusters,
+					   cairo_text_cluster_flags_t  cluster_flags,
+					   cairo_scaled_font_t	      *scaled_font,
+					   const cairo_clip_t		      *clip)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_show_text_glyphs (surface->recording_surface, op, source,
+					    utf8, utf8_len,
+					    glyphs, num_glyphs,
+					    clusters, num_clusters,
+					    cluster_flags,
+					    scaled_font,
+					    clip);
+}
+
+static const char **
+_cairo_paginated_surface_get_supported_mime_types (void *abstract_surface)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    if (surface->target->backend->get_supported_mime_types)
+	return surface->target->backend->get_supported_mime_types (surface->target);
+
+    return NULL;
+}
+
+static cairo_int_status_t
+_cairo_paginated_surface_tag (void			 *abstract_surface,
+			      cairo_bool_t                begin,
+			      const char                 *tag_name,
+			      const char                 *attributes,
+			      const cairo_pattern_t	 *source,
+			      const cairo_stroke_style_t *style,
+			      const cairo_matrix_t	 *ctm,
+			      const cairo_matrix_t	 *ctm_inverse,
+			      const cairo_clip_t	 *clip)
+{
+    cairo_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_tag (surface->recording_surface,
+			       begin, tag_name, attributes,
+			       source, style,
+			       ctm, ctm_inverse,
+			       clip);
+}
+
+static cairo_surface_t *
+_cairo_paginated_surface_snapshot (void *abstract_other)
+{
+    cairo_paginated_surface_t *other = abstract_other;
+
+    return other->recording_surface->backend->snapshot (other->recording_surface);
+}
+
+static cairo_t *
+_cairo_paginated_context_create (void *target)
+{
+    cairo_paginated_surface_t *surface = target;
+
+    if (_cairo_surface_is_subsurface (&surface->base))
+	surface = (cairo_paginated_surface_t *)
+	    _cairo_surface_subsurface_get_target (&surface->base);
+
+    return surface->recording_surface->backend->create_context (target);
+}
+
+static const cairo_surface_backend_t cairo_paginated_surface_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_PAGINATED,
+    _cairo_paginated_surface_finish,
+
+    _cairo_paginated_context_create,
+
+    _cairo_paginated_surface_create_similar,
+    NULL, /* create simlar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_paginated_surface_source,
+    _cairo_paginated_surface_acquire_source_image,
+    _cairo_paginated_surface_release_source_image,
+    _cairo_paginated_surface_snapshot,
+
+    _cairo_paginated_surface_copy_page,
+    _cairo_paginated_surface_show_page,
+
+    _cairo_paginated_surface_get_extents,
+    _cairo_paginated_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_paginated_surface_paint,
+    _cairo_paginated_surface_mask,
+    _cairo_paginated_surface_stroke,
+    _cairo_paginated_surface_fill,
+    NULL, /* fill_stroke */
+    NULL, /* show_glyphs */
+    _cairo_paginated_surface_has_show_text_glyphs,
+    _cairo_paginated_surface_show_text_glyphs,
+    _cairo_paginated_surface_get_supported_mime_types,
+    _cairo_paginated_surface_tag,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-path-bounds.c b/libs/cairo-1.16.0/src/cairo-path-bounds.c
new file mode 100644
index 0000000..ac85f27
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-bounds.c
@@ -0,0 +1,230 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-box-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+
+typedef struct _cairo_path_bounder {
+    cairo_point_t current_point;
+    cairo_bool_t has_extents;
+    cairo_box_t extents;
+} cairo_path_bounder_t;
+
+static cairo_status_t
+_cairo_path_bounder_move_to (void *closure,
+			     const cairo_point_t *point)
+{
+    cairo_path_bounder_t *bounder = closure;
+
+    bounder->current_point = *point;
+
+    if (likely (bounder->has_extents)) {
+	_cairo_box_add_point (&bounder->extents, point);
+    } else {
+	bounder->has_extents = TRUE;
+	_cairo_box_set (&bounder->extents, point, point);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_bounder_line_to (void *closure,
+			     const cairo_point_t *point)
+{
+    cairo_path_bounder_t *bounder = closure;
+
+    bounder->current_point = *point;
+    _cairo_box_add_point (&bounder->extents, point);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_bounder_curve_to (void *closure,
+			      const cairo_point_t *b,
+			      const cairo_point_t *c,
+			      const cairo_point_t *d)
+{
+    cairo_path_bounder_t *bounder = closure;
+
+    _cairo_box_add_curve_to (&bounder->extents,
+			     &bounder->current_point,
+			     b, c, d);
+    bounder->current_point = *d;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_bounder_close_path (void *closure)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_bool_t
+_cairo_path_bounder_extents (const cairo_path_fixed_t *path,
+			     cairo_box_t *extents)
+{
+    cairo_path_bounder_t bounder;
+    cairo_status_t status;
+
+    bounder.has_extents = FALSE;
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_path_bounder_move_to,
+					  _cairo_path_bounder_line_to,
+					  _cairo_path_bounder_curve_to,
+					  _cairo_path_bounder_close_path,
+					  &bounder);
+    assert (!status);
+
+    if (bounder.has_extents)
+	*extents = bounder.extents;
+
+    return bounder.has_extents;
+}
+
+void
+_cairo_path_fixed_approximate_clip_extents (const cairo_path_fixed_t *path,
+					    cairo_rectangle_int_t *extents)
+{
+    _cairo_path_fixed_approximate_fill_extents (path, extents);
+}
+
+void
+_cairo_path_fixed_approximate_fill_extents (const cairo_path_fixed_t *path,
+					    cairo_rectangle_int_t *extents)
+{
+    _cairo_path_fixed_fill_extents (path, CAIRO_FILL_RULE_WINDING, 0, extents);
+}
+
+void
+_cairo_path_fixed_fill_extents (const cairo_path_fixed_t	*path,
+				cairo_fill_rule_t	 fill_rule,
+				double			 tolerance,
+				cairo_rectangle_int_t	*extents)
+{
+    if (path->extents.p1.x < path->extents.p2.x &&
+	path->extents.p1.y < path->extents.p2.y) {
+	_cairo_box_round_to_rectangle (&path->extents, extents);
+    } else {
+	extents->x = extents->y = 0;
+	extents->width = extents->height = 0;
+    }
+}
+
+/* Adjusts the fill extents (above) by the device-space pen.  */
+void
+_cairo_path_fixed_approximate_stroke_extents (const cairo_path_fixed_t *path,
+					      const cairo_stroke_style_t *style,
+					      const cairo_matrix_t *ctm,
+					      cairo_bool_t is_vector,
+					      cairo_rectangle_int_t *extents)
+{
+    if (path->has_extents) {
+	cairo_box_t box_extents;
+	double dx, dy;
+
+	_cairo_stroke_style_max_distance_from_path (style, path, ctm, &dx, &dy);
+	if (is_vector)
+	{
+	    /* When calculating extents for vector surfaces, ensure lines thinner
+	     * than the fixed point resolution are not optimized away. */
+	    double min = _cairo_fixed_to_double (CAIRO_FIXED_EPSILON*2);
+	    if (dx < min)
+		dx = min;
+
+	    if (dy < min)
+		dy = min;
+	}
+
+	box_extents = path->extents;
+	box_extents.p1.x -= _cairo_fixed_from_double (dx);
+	box_extents.p1.y -= _cairo_fixed_from_double (dy);
+	box_extents.p2.x += _cairo_fixed_from_double (dx);
+	box_extents.p2.y += _cairo_fixed_from_double (dy);
+
+	_cairo_box_round_to_rectangle (&box_extents, extents);
+    } else {
+	extents->x = extents->y = 0;
+	extents->width = extents->height = 0;
+    }
+}
+
+cairo_status_t
+_cairo_path_fixed_stroke_extents (const cairo_path_fixed_t	*path,
+				  const cairo_stroke_style_t	*stroke_style,
+				  const cairo_matrix_t		*ctm,
+				  const cairo_matrix_t		*ctm_inverse,
+				  double			 tolerance,
+				  cairo_rectangle_int_t		*extents)
+{
+    cairo_polygon_t polygon;
+    cairo_status_t status;
+    cairo_stroke_style_t style;
+
+    /* When calculating extents for vector surfaces, ensure lines thinner
+     * than one point are not optimized away. */
+    double min_line_width = _cairo_matrix_transformed_circle_major_axis (ctm_inverse, 1.0);
+    if (stroke_style->line_width < min_line_width)
+    {
+	style = *stroke_style;
+	style.line_width = min_line_width;
+	stroke_style = &style;
+    }
+
+    _cairo_polygon_init (&polygon, NULL, 0);
+    status = _cairo_path_fixed_stroke_to_polygon (path,
+						  stroke_style,
+						  ctm, ctm_inverse,
+						  tolerance,
+						  &polygon);
+    _cairo_box_round_to_rectangle (&polygon.extents, extents);
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+cairo_bool_t
+_cairo_path_fixed_extents (const cairo_path_fixed_t *path,
+			   cairo_box_t *box)
+{
+    *box = path->extents;
+    return path->has_extents;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-fill.c b/libs/cairo-1.16.0/src/cairo-path-fill.c
new file mode 100644
index 0000000..4000c9c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-fill.c
@@ -0,0 +1,341 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-region-private.h"
+#include "cairo-traps-private.h"
+
+typedef struct cairo_filler {
+    cairo_polygon_t *polygon;
+    double tolerance;
+
+    cairo_box_t limit;
+    cairo_bool_t has_limits;
+
+    cairo_point_t current_point;
+    cairo_point_t last_move_to;
+} cairo_filler_t;
+
+static cairo_status_t
+_cairo_filler_line_to (void *closure,
+		       const cairo_point_t *point)
+{
+    cairo_filler_t *filler = closure;
+    cairo_status_t status;
+
+    status = _cairo_polygon_add_external_edge (filler->polygon,
+					       &filler->current_point,
+					       point);
+
+    filler->current_point = *point;
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_filler_close (void *closure)
+{
+    cairo_filler_t *filler = closure;
+
+    /* close the subpath */
+    return _cairo_filler_line_to (closure, &filler->last_move_to);
+}
+
+static cairo_status_t
+_cairo_filler_move_to (void *closure,
+		       const cairo_point_t *point)
+{
+    cairo_filler_t *filler = closure;
+    cairo_status_t status;
+
+    /* close current subpath */
+    status = _cairo_filler_close (closure);
+    if (unlikely (status))
+	return status;
+
+        /* make sure that the closure represents a degenerate path */
+    filler->current_point = *point;
+    filler->last_move_to = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_filler_curve_to (void		*closure,
+			const cairo_point_t	*p1,
+			const cairo_point_t	*p2,
+			const cairo_point_t	*p3)
+{
+    cairo_filler_t *filler = closure;
+    cairo_spline_t spline;
+
+    if (filler->has_limits) {
+	if (! _cairo_spline_intersects (&filler->current_point, p1, p2, p3,
+					&filler->limit))
+	    return _cairo_filler_line_to (filler, p3);
+    }
+
+    if (! _cairo_spline_init (&spline,
+			      (cairo_spline_add_point_func_t)_cairo_filler_line_to, filler,
+			      &filler->current_point, p1, p2, p3))
+    {
+	return _cairo_filler_line_to (closure, p3);
+    }
+
+    return _cairo_spline_decompose (&spline, filler->tolerance);
+}
+
+cairo_status_t
+_cairo_path_fixed_fill_to_polygon (const cairo_path_fixed_t *path,
+				   double tolerance,
+				   cairo_polygon_t *polygon)
+{
+    cairo_filler_t filler;
+    cairo_status_t status;
+
+    filler.polygon = polygon;
+    filler.tolerance = tolerance;
+
+    filler.has_limits = FALSE;
+    if (polygon->num_limits) {
+	filler.has_limits = TRUE;
+	filler.limit = polygon->limit;
+    }
+
+    /* make sure that the closure represents a degenerate path */
+    filler.current_point.x = 0;
+    filler.current_point.y = 0;
+    filler.last_move_to = filler.current_point;
+
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_filler_move_to,
+					  _cairo_filler_line_to,
+					  _cairo_filler_curve_to,
+					  _cairo_filler_close,
+					  &filler);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_filler_close (&filler);
+}
+
+typedef struct cairo_filler_rectilinear_aligned {
+    cairo_polygon_t *polygon;
+
+    cairo_point_t current_point;
+    cairo_point_t last_move_to;
+} cairo_filler_ra_t;
+
+static cairo_status_t
+_cairo_filler_ra_line_to (void *closure,
+			  const cairo_point_t *point)
+{
+    cairo_filler_ra_t *filler = closure;
+    cairo_status_t status;
+    cairo_point_t p;
+
+    p.x = _cairo_fixed_round_down (point->x);
+    p.y = _cairo_fixed_round_down (point->y);
+
+    status = _cairo_polygon_add_external_edge (filler->polygon,
+					       &filler->current_point,
+					       &p);
+
+    filler->current_point = p;
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_filler_ra_close (void *closure)
+{
+    cairo_filler_ra_t *filler = closure;
+    return _cairo_filler_ra_line_to (closure, &filler->last_move_to);
+}
+
+static cairo_status_t
+_cairo_filler_ra_move_to (void *closure,
+			  const cairo_point_t *point)
+{
+    cairo_filler_ra_t *filler = closure;
+    cairo_status_t status;
+    cairo_point_t p;
+
+    /* close current subpath */
+    status = _cairo_filler_ra_close (closure);
+    if (unlikely (status))
+	return status;
+
+    p.x = _cairo_fixed_round_down (point->x);
+    p.y = _cairo_fixed_round_down (point->y);
+
+    /* make sure that the closure represents a degenerate path */
+    filler->current_point = p;
+    filler->last_move_to = p;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_path_fixed_fill_rectilinear_to_polygon (const cairo_path_fixed_t *path,
+					       cairo_antialias_t antialias,
+					       cairo_polygon_t *polygon)
+{
+    cairo_filler_ra_t filler;
+    cairo_status_t status;
+
+    if (antialias != CAIRO_ANTIALIAS_NONE)
+	return _cairo_path_fixed_fill_to_polygon (path, 0., polygon);
+
+    filler.polygon = polygon;
+
+    /* make sure that the closure represents a degenerate path */
+    filler.current_point.x = 0;
+    filler.current_point.y = 0;
+    filler.last_move_to = filler.current_point;
+
+    status = _cairo_path_fixed_interpret_flat (path,
+					       _cairo_filler_ra_move_to,
+					       _cairo_filler_ra_line_to,
+					       _cairo_filler_ra_close,
+					       &filler,
+					       0.);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_filler_ra_close (&filler);
+}
+
+cairo_status_t
+_cairo_path_fixed_fill_to_traps (const cairo_path_fixed_t *path,
+				 cairo_fill_rule_t fill_rule,
+				 double tolerance,
+				 cairo_traps_t *traps)
+{
+    cairo_polygon_t polygon;
+    cairo_status_t status;
+
+    if (_cairo_path_fixed_fill_is_empty (path))
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_polygon_init (&polygon, traps->limits, traps->num_limits);
+    status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon);
+    if (unlikely (status || polygon.num_edges == 0))
+	goto CLEANUP;
+
+    status = _cairo_bentley_ottmann_tessellate_polygon (traps,
+							&polygon, fill_rule);
+
+  CLEANUP:
+    _cairo_polygon_fini (&polygon);
+    return status;
+}
+
+static cairo_status_t
+_cairo_path_fixed_fill_rectilinear_tessellate_to_boxes (const cairo_path_fixed_t *path,
+							cairo_fill_rule_t fill_rule,
+							cairo_antialias_t antialias,
+							cairo_boxes_t *boxes)
+{
+    cairo_polygon_t polygon;
+    cairo_status_t status;
+
+    _cairo_polygon_init (&polygon, boxes->limits, boxes->num_limits);
+    boxes->num_limits = 0;
+
+    /* tolerance will be ignored as the path is rectilinear */
+    status = _cairo_path_fixed_fill_rectilinear_to_polygon (path, antialias, &polygon);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status =
+	    _cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes (&polygon,
+									    fill_rule,
+									    boxes);
+    }
+
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_path_fixed_fill_rectilinear_to_boxes (const cairo_path_fixed_t *path,
+					     cairo_fill_rule_t fill_rule,
+					     cairo_antialias_t antialias,
+					     cairo_boxes_t *boxes)
+{
+    cairo_path_fixed_iter_t iter;
+    cairo_status_t status;
+    cairo_box_t box;
+
+    if (_cairo_path_fixed_is_box (path, &box))
+	return _cairo_boxes_add (boxes, antialias, &box);
+
+    _cairo_path_fixed_iter_init (&iter, path);
+    while (_cairo_path_fixed_iter_is_fill_box (&iter, &box)) {
+	if (box.p1.y == box.p2.y || box.p1.x == box.p2.x)
+	    continue;
+
+	if (box.p1.y > box.p2.y) {
+	    cairo_fixed_t t;
+
+	    t = box.p1.y;
+	    box.p1.y = box.p2.y;
+	    box.p2.y = t;
+
+	    t = box.p1.x;
+	    box.p1.x = box.p2.x;
+	    box.p2.x = t;
+	}
+
+	status = _cairo_boxes_add (boxes, antialias, &box);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (_cairo_path_fixed_iter_at_end (&iter))
+	return _cairo_bentley_ottmann_tessellate_boxes (boxes, fill_rule, boxes);
+
+    /* path is not rectangular, try extracting clipped rectilinear edges */
+    _cairo_boxes_clear (boxes);
+    return _cairo_path_fixed_fill_rectilinear_tessellate_to_boxes (path,
+								   fill_rule,
+								   antialias,
+								   boxes);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-fixed-private.h b/libs/cairo-1.16.0/src/cairo-path-fixed-private.h
new file mode 100644
index 0000000..cf7cd08
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-fixed-private.h
@@ -0,0 +1,206 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_PATH_FIXED_PRIVATE_H
+#define CAIRO_PATH_FIXED_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-list-private.h"
+
+#define WATCH_PATH 0
+#if WATCH_PATH
+#include <stdio.h>
+#endif
+
+enum cairo_path_op {
+    CAIRO_PATH_OP_MOVE_TO = 0,
+    CAIRO_PATH_OP_LINE_TO = 1,
+    CAIRO_PATH_OP_CURVE_TO = 2,
+    CAIRO_PATH_OP_CLOSE_PATH = 3
+};
+
+/* we want to make sure a single byte is used for the enum */
+typedef char cairo_path_op_t;
+
+/* make _cairo_path_fixed fit into ~512 bytes -- about 50 items */
+#define CAIRO_PATH_BUF_SIZE ((512 - sizeof (cairo_path_buf_t)) \
+			   / (2 * sizeof (cairo_point_t) + sizeof (cairo_path_op_t)))
+
+#define cairo_path_head(path__) (&(path__)->buf.base)
+#define cairo_path_tail(path__) cairo_path_buf_prev (cairo_path_head (path__))
+
+#define cairo_path_buf_next(pos__) \
+    cairo_list_entry ((pos__)->link.next, cairo_path_buf_t, link)
+#define cairo_path_buf_prev(pos__) \
+    cairo_list_entry ((pos__)->link.prev, cairo_path_buf_t, link)
+
+#define cairo_path_foreach_buf_start(pos__, path__) \
+    pos__ = cairo_path_head (path__); do
+#define cairo_path_foreach_buf_end(pos__, path__) \
+    while ((pos__ = cairo_path_buf_next (pos__)) !=  cairo_path_head (path__))
+
+
+typedef struct _cairo_path_buf {
+    cairo_list_t link;
+    unsigned int num_ops;
+    unsigned int size_ops;
+    unsigned int num_points;
+    unsigned int size_points;
+
+    cairo_path_op_t *op;
+    cairo_point_t *points;
+} cairo_path_buf_t;
+
+typedef struct _cairo_path_buf_fixed {
+    cairo_path_buf_t base;
+
+    cairo_path_op_t op[CAIRO_PATH_BUF_SIZE];
+    cairo_point_t points[2 * CAIRO_PATH_BUF_SIZE];
+} cairo_path_buf_fixed_t;
+
+/*
+  NOTES:
+  has_curve_to => !stroke_is_rectilinear
+  fill_is_rectilinear => stroke_is_rectilinear
+  fill_is_empty => fill_is_rectilinear
+  fill_maybe_region => fill_is_rectilinear
+*/
+struct _cairo_path_fixed {
+    cairo_point_t last_move_point;
+    cairo_point_t current_point;
+    unsigned int has_current_point	: 1;
+    unsigned int needs_move_to		: 1;
+    unsigned int has_extents		: 1;
+    unsigned int has_curve_to		: 1;
+    unsigned int stroke_is_rectilinear	: 1;
+    unsigned int fill_is_rectilinear	: 1;
+    unsigned int fill_maybe_region	: 1;
+    unsigned int fill_is_empty		: 1;
+
+    cairo_box_t extents;
+
+    cairo_path_buf_fixed_t  buf;
+};
+
+cairo_private void
+_cairo_path_fixed_translate (cairo_path_fixed_t *path,
+			     cairo_fixed_t offx,
+			     cairo_fixed_t offy);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_append (cairo_path_fixed_t		    *path,
+			  const cairo_path_fixed_t	    *other,
+			  cairo_fixed_t			     tx,
+			  cairo_fixed_t			     ty);
+
+cairo_private unsigned long
+_cairo_path_fixed_hash (const cairo_path_fixed_t *path);
+
+cairo_private unsigned long
+_cairo_path_fixed_size (const cairo_path_fixed_t *path);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_equal (const cairo_path_fixed_t *a,
+			 const cairo_path_fixed_t *b);
+
+typedef struct _cairo_path_fixed_iter {
+    const cairo_path_buf_t *first;
+    const cairo_path_buf_t *buf;
+    unsigned int n_op;
+    unsigned int n_point;
+} cairo_path_fixed_iter_t;
+
+cairo_private void
+_cairo_path_fixed_iter_init (cairo_path_fixed_iter_t *iter,
+			     const cairo_path_fixed_t *path);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_iter_is_fill_box (cairo_path_fixed_iter_t *_iter,
+				    cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_iter_at_end (const cairo_path_fixed_iter_t *iter);
+
+static inline cairo_bool_t
+_cairo_path_fixed_fill_is_empty (const cairo_path_fixed_t *path)
+{
+    return path->fill_is_empty;
+}
+
+static inline cairo_bool_t
+_cairo_path_fixed_fill_is_rectilinear (const cairo_path_fixed_t *path)
+{
+    if (! path->fill_is_rectilinear)
+	return 0;
+
+    if (! path->has_current_point || path->needs_move_to)
+	return 1;
+
+    /* check whether the implicit close preserves the rectilinear property */
+    return path->current_point.x == path->last_move_point.x ||
+	   path->current_point.y == path->last_move_point.y;
+}
+
+static inline cairo_bool_t
+_cairo_path_fixed_stroke_is_rectilinear (const cairo_path_fixed_t *path)
+{
+    return path->stroke_is_rectilinear;
+}
+
+static inline cairo_bool_t
+_cairo_path_fixed_fill_maybe_region (const cairo_path_fixed_t *path)
+{
+    if (! path->fill_maybe_region)
+	return 0;
+
+    if (! path->has_current_point || path->needs_move_to)
+	return 1;
+
+    /* check whether the implicit close preserves the rectilinear property
+     * (the integer point property is automatically preserved)
+     */
+    return path->current_point.x == path->last_move_point.x ||
+	   path->current_point.y == path->last_move_point.y;
+}
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_is_stroke_box (const cairo_path_fixed_t *path,
+				 cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_is_simple_quad (const cairo_path_fixed_t *path);
+
+#endif /* CAIRO_PATH_FIXED_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-path-fixed.c b/libs/cairo-1.16.0/src/cairo-path-fixed.c
new file mode 100644
index 0000000..9e9166c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-fixed.c
@@ -0,0 +1,1589 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+  *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-slope-private.h"
+
+static cairo_status_t
+_cairo_path_fixed_add (cairo_path_fixed_t  *path,
+		       cairo_path_op_t	    op,
+		       const cairo_point_t *points,
+		       int		    num_points);
+
+static void
+_cairo_path_fixed_add_buf (cairo_path_fixed_t *path,
+			   cairo_path_buf_t   *buf);
+
+static cairo_path_buf_t *
+_cairo_path_buf_create (int size_ops, int size_points);
+
+static void
+_cairo_path_buf_destroy (cairo_path_buf_t *buf);
+
+static void
+_cairo_path_buf_add_op (cairo_path_buf_t *buf,
+			cairo_path_op_t   op);
+
+static void
+_cairo_path_buf_add_points (cairo_path_buf_t       *buf,
+			    const cairo_point_t    *points,
+			    int		            num_points);
+
+void
+_cairo_path_fixed_init (cairo_path_fixed_t *path)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (path, sizeof (cairo_path_fixed_t)));
+
+    cairo_list_init (&path->buf.base.link);
+
+    path->buf.base.num_ops = 0;
+    path->buf.base.num_points = 0;
+    path->buf.base.size_ops = ARRAY_LENGTH (path->buf.op);
+    path->buf.base.size_points = ARRAY_LENGTH (path->buf.points);
+    path->buf.base.op = path->buf.op;
+    path->buf.base.points = path->buf.points;
+
+    path->current_point.x = 0;
+    path->current_point.y = 0;
+    path->last_move_point = path->current_point;
+
+    path->has_current_point = FALSE;
+    path->needs_move_to = TRUE;
+    path->has_extents = FALSE;
+    path->has_curve_to = FALSE;
+    path->stroke_is_rectilinear = TRUE;
+    path->fill_is_rectilinear = TRUE;
+    path->fill_maybe_region = TRUE;
+    path->fill_is_empty = TRUE;
+
+    path->extents.p1.x = path->extents.p1.y = 0;
+    path->extents.p2.x = path->extents.p2.y = 0;
+}
+
+cairo_status_t
+_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
+			     const cairo_path_fixed_t *other)
+{
+    cairo_path_buf_t *buf, *other_buf;
+    unsigned int num_points, num_ops;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (path, sizeof (cairo_path_fixed_t)));
+
+    cairo_list_init (&path->buf.base.link);
+
+    path->buf.base.op = path->buf.op;
+    path->buf.base.points = path->buf.points;
+    path->buf.base.size_ops = ARRAY_LENGTH (path->buf.op);
+    path->buf.base.size_points = ARRAY_LENGTH (path->buf.points);
+
+    path->current_point = other->current_point;
+    path->last_move_point = other->last_move_point;
+
+    path->has_current_point = other->has_current_point;
+    path->needs_move_to = other->needs_move_to;
+    path->has_extents = other->has_extents;
+    path->has_curve_to = other->has_curve_to;
+    path->stroke_is_rectilinear = other->stroke_is_rectilinear;
+    path->fill_is_rectilinear = other->fill_is_rectilinear;
+    path->fill_maybe_region = other->fill_maybe_region;
+    path->fill_is_empty = other->fill_is_empty;
+
+    path->extents = other->extents;
+
+    path->buf.base.num_ops = other->buf.base.num_ops;
+    path->buf.base.num_points = other->buf.base.num_points;
+    memcpy (path->buf.op, other->buf.base.op,
+	    other->buf.base.num_ops * sizeof (other->buf.op[0]));
+    memcpy (path->buf.points, other->buf.points,
+	    other->buf.base.num_points * sizeof (other->buf.points[0]));
+
+    num_points = num_ops = 0;
+    for (other_buf = cairo_path_buf_next (cairo_path_head (other));
+	 other_buf != cairo_path_head (other);
+	 other_buf = cairo_path_buf_next (other_buf))
+    {
+	num_ops    += other_buf->num_ops;
+	num_points += other_buf->num_points;
+    }
+
+    if (num_ops) {
+	buf = _cairo_path_buf_create (num_ops, num_points);
+	if (unlikely (buf == NULL)) {
+	    _cairo_path_fixed_fini (path);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	for (other_buf = cairo_path_buf_next (cairo_path_head (other));
+	     other_buf != cairo_path_head (other);
+	     other_buf = cairo_path_buf_next (other_buf))
+	{
+	    memcpy (buf->op + buf->num_ops, other_buf->op,
+		    other_buf->num_ops * sizeof (buf->op[0]));
+	    buf->num_ops += other_buf->num_ops;
+
+	    memcpy (buf->points + buf->num_points, other_buf->points,
+		    other_buf->num_points * sizeof (buf->points[0]));
+	    buf->num_points += other_buf->num_points;
+	}
+
+	_cairo_path_fixed_add_buf (path, buf);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+unsigned long
+_cairo_path_fixed_hash (const cairo_path_fixed_t *path)
+{
+    unsigned long hash = _CAIRO_HASH_INIT_VALUE;
+    const cairo_path_buf_t *buf;
+    unsigned int count;
+
+    count = 0;
+    cairo_path_foreach_buf_start (buf, path) {
+	hash = _cairo_hash_bytes (hash, buf->op,
+			          buf->num_ops * sizeof (buf->op[0]));
+	count += buf->num_ops;
+    } cairo_path_foreach_buf_end (buf, path);
+    hash = _cairo_hash_bytes (hash, &count, sizeof (count));
+
+    count = 0;
+    cairo_path_foreach_buf_start (buf, path) {
+	hash = _cairo_hash_bytes (hash, buf->points,
+			          buf->num_points * sizeof (buf->points[0]));
+	count += buf->num_points;
+    } cairo_path_foreach_buf_end (buf, path);
+    hash = _cairo_hash_bytes (hash, &count, sizeof (count));
+
+    return hash;
+}
+
+unsigned long
+_cairo_path_fixed_size (const cairo_path_fixed_t *path)
+{
+    const cairo_path_buf_t *buf;
+    int num_points, num_ops;
+
+    num_ops = num_points = 0;
+    cairo_path_foreach_buf_start (buf, path) {
+	num_ops    += buf->num_ops;
+	num_points += buf->num_points;
+    } cairo_path_foreach_buf_end (buf, path);
+
+    return num_ops * sizeof (buf->op[0]) +
+	   num_points * sizeof (buf->points[0]);
+}
+
+cairo_bool_t
+_cairo_path_fixed_equal (const cairo_path_fixed_t *a,
+			 const cairo_path_fixed_t *b)
+{
+    const cairo_path_buf_t *buf_a, *buf_b;
+    const cairo_path_op_t *ops_a, *ops_b;
+    const cairo_point_t *points_a, *points_b;
+    int num_points_a, num_ops_a;
+    int num_points_b, num_ops_b;
+
+    if (a == b)
+	return TRUE;
+
+    /* use the flags to quickly differentiate based on contents */
+    if (a->has_curve_to != b->has_curve_to)
+    {
+	return FALSE;
+    }
+
+    if (a->extents.p1.x != b->extents.p1.x ||
+	a->extents.p1.y != b->extents.p1.y ||
+	a->extents.p2.x != b->extents.p2.x ||
+	a->extents.p2.y != b->extents.p2.y)
+    {
+	return FALSE;
+    }
+
+    num_ops_a = num_points_a = 0;
+    cairo_path_foreach_buf_start (buf_a, a) {
+	num_ops_a    += buf_a->num_ops;
+	num_points_a += buf_a->num_points;
+    } cairo_path_foreach_buf_end (buf_a, a);
+
+    num_ops_b = num_points_b = 0;
+    cairo_path_foreach_buf_start (buf_b, b) {
+	num_ops_b    += buf_b->num_ops;
+	num_points_b += buf_b->num_points;
+    } cairo_path_foreach_buf_end (buf_b, b);
+
+    if (num_ops_a == 0 && num_ops_b == 0)
+	return TRUE;
+
+    if (num_ops_a != num_ops_b || num_points_a != num_points_b)
+	return FALSE;
+
+    buf_a = cairo_path_head (a);
+    num_points_a = buf_a->num_points;
+    num_ops_a = buf_a->num_ops;
+    ops_a = buf_a->op;
+    points_a = buf_a->points;
+
+    buf_b = cairo_path_head (b);
+    num_points_b = buf_b->num_points;
+    num_ops_b = buf_b->num_ops;
+    ops_b = buf_b->op;
+    points_b = buf_b->points;
+
+    while (TRUE) {
+	int num_ops = MIN (num_ops_a, num_ops_b);
+	int num_points = MIN (num_points_a, num_points_b);
+
+	if (memcmp (ops_a, ops_b, num_ops * sizeof (cairo_path_op_t)))
+	    return FALSE;
+	if (memcmp (points_a, points_b, num_points * sizeof (cairo_point_t)))
+	    return FALSE;
+
+	num_ops_a -= num_ops;
+	ops_a += num_ops;
+	num_points_a -= num_points;
+	points_a += num_points;
+	if (num_ops_a == 0 || num_points_a == 0) {
+	    if (num_ops_a || num_points_a)
+		return FALSE;
+
+	    buf_a = cairo_path_buf_next (buf_a);
+	    if (buf_a == cairo_path_head (a))
+		break;
+
+	    num_points_a = buf_a->num_points;
+	    num_ops_a = buf_a->num_ops;
+	    ops_a = buf_a->op;
+	    points_a = buf_a->points;
+	}
+
+	num_ops_b -= num_ops;
+	ops_b += num_ops;
+	num_points_b -= num_points;
+	points_b += num_points;
+	if (num_ops_b == 0 || num_points_b == 0) {
+	    if (num_ops_b || num_points_b)
+		return FALSE;
+
+	    buf_b = cairo_path_buf_next (buf_b);
+	    if (buf_b == cairo_path_head (b))
+		break;
+
+	    num_points_b = buf_b->num_points;
+	    num_ops_b = buf_b->num_ops;
+	    ops_b = buf_b->op;
+	    points_b = buf_b->points;
+	}
+    }
+
+    return TRUE;
+}
+
+cairo_path_fixed_t *
+_cairo_path_fixed_create (void)
+{
+    cairo_path_fixed_t	*path;
+
+    path = _cairo_malloc (sizeof (cairo_path_fixed_t));
+    if (!path) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    _cairo_path_fixed_init (path);
+    return path;
+}
+
+void
+_cairo_path_fixed_fini (cairo_path_fixed_t *path)
+{
+    cairo_path_buf_t *buf;
+
+    buf = cairo_path_buf_next (cairo_path_head (path));
+    while (buf != cairo_path_head (path)) {
+	cairo_path_buf_t *this = buf;
+	buf = cairo_path_buf_next (buf);
+	_cairo_path_buf_destroy (this);
+    }
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (path, sizeof (cairo_path_fixed_t)));
+}
+
+void
+_cairo_path_fixed_destroy (cairo_path_fixed_t *path)
+{
+    _cairo_path_fixed_fini (path);
+    free (path);
+}
+
+static cairo_path_op_t
+_cairo_path_fixed_last_op (cairo_path_fixed_t *path)
+{
+    cairo_path_buf_t *buf;
+
+    buf = cairo_path_tail (path);
+    assert (buf->num_ops != 0);
+
+    return buf->op[buf->num_ops - 1];
+}
+
+static inline const cairo_point_t *
+_cairo_path_fixed_penultimate_point (cairo_path_fixed_t *path)
+{
+    cairo_path_buf_t *buf;
+
+    buf = cairo_path_tail (path);
+    if (likely (buf->num_points >= 2)) {
+	return &buf->points[buf->num_points - 2];
+    } else {
+	cairo_path_buf_t *prev_buf = cairo_path_buf_prev (buf);
+
+	assert (prev_buf->num_points >= 2 - buf->num_points);
+	return &prev_buf->points[prev_buf->num_points - (2 - buf->num_points)];
+    }
+}
+
+static void
+_cairo_path_fixed_drop_line_to (cairo_path_fixed_t *path)
+{
+    cairo_path_buf_t *buf;
+
+    assert (_cairo_path_fixed_last_op (path) == CAIRO_PATH_OP_LINE_TO);
+
+    buf = cairo_path_tail (path);
+    buf->num_points--;
+    buf->num_ops--;
+}
+
+cairo_status_t
+_cairo_path_fixed_move_to (cairo_path_fixed_t  *path,
+			   cairo_fixed_t	x,
+			   cairo_fixed_t	y)
+{
+    _cairo_path_fixed_new_sub_path (path);
+
+    path->has_current_point = TRUE;
+    path->current_point.x = x;
+    path->current_point.y = y;
+    path->last_move_point = path->current_point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_fixed_move_to_apply (cairo_path_fixed_t  *path)
+{
+    if (likely (! path->needs_move_to))
+	return CAIRO_STATUS_SUCCESS;
+
+    path->needs_move_to = FALSE;
+
+    if (path->has_extents) {
+	_cairo_box_add_point (&path->extents, &path->current_point);
+    } else {
+	_cairo_box_set (&path->extents, &path->current_point, &path->current_point);
+	path->has_extents = TRUE;
+    }
+
+    if (path->fill_maybe_region) {
+	path->fill_maybe_region = _cairo_fixed_is_integer (path->current_point.x) &&
+				  _cairo_fixed_is_integer (path->current_point.y);
+    }
+
+    path->last_move_point = path->current_point;
+
+    return _cairo_path_fixed_add (path, CAIRO_PATH_OP_MOVE_TO, &path->current_point, 1);
+}
+
+void
+_cairo_path_fixed_new_sub_path (cairo_path_fixed_t *path)
+{
+    if (! path->needs_move_to) {
+	/* If the current subpath doesn't need_move_to, it contains at least one command */
+	if (path->fill_is_rectilinear) {
+	    /* Implicitly close for fill */
+	    path->fill_is_rectilinear = path->current_point.x == path->last_move_point.x ||
+					path->current_point.y == path->last_move_point.y;
+	    path->fill_maybe_region &= path->fill_is_rectilinear;
+	}
+	path->needs_move_to = TRUE;
+    }
+
+    path->has_current_point = FALSE;
+}
+
+cairo_status_t
+_cairo_path_fixed_rel_move_to (cairo_path_fixed_t *path,
+			       cairo_fixed_t	   dx,
+			       cairo_fixed_t	   dy)
+{
+    if (unlikely (! path->has_current_point))
+	return _cairo_error (CAIRO_STATUS_NO_CURRENT_POINT);
+
+    return _cairo_path_fixed_move_to (path,
+				      path->current_point.x + dx,
+				      path->current_point.y + dy);
+
+}
+
+cairo_status_t
+_cairo_path_fixed_line_to (cairo_path_fixed_t *path,
+			   cairo_fixed_t	x,
+			   cairo_fixed_t	y)
+{
+    cairo_status_t status;
+    cairo_point_t point;
+
+    point.x = x;
+    point.y = y;
+
+    /* When there is not yet a current point, the line_to operation
+     * becomes a move_to instead. Note: We have to do this by
+     * explicitly calling into _cairo_path_fixed_move_to to ensure
+     * that the last_move_point state is updated properly.
+     */
+    if (! path->has_current_point)
+	return _cairo_path_fixed_move_to (path, point.x, point.y);
+
+    status = _cairo_path_fixed_move_to_apply (path);
+    if (unlikely (status))
+	return status;
+
+    /* If the previous op was but the initial MOVE_TO and this segment
+     * is degenerate, then we can simply skip this point. Note that
+     * a move-to followed by a degenerate line-to is a valid path for
+     * stroking, but at all other times is simply a degenerate segment.
+     */
+    if (_cairo_path_fixed_last_op (path) != CAIRO_PATH_OP_MOVE_TO) {
+	if (x == path->current_point.x && y == path->current_point.y)
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* If the previous op was also a LINE_TO with the same gradient,
+     * then just change its end-point rather than adding a new op.
+     */
+    if (_cairo_path_fixed_last_op (path) == CAIRO_PATH_OP_LINE_TO) {
+	const cairo_point_t *p;
+
+	p = _cairo_path_fixed_penultimate_point (path);
+	if (p->x == path->current_point.x && p->y == path->current_point.y) {
+	    /* previous line element was degenerate, replace */
+	    _cairo_path_fixed_drop_line_to (path);
+	} else {
+	    cairo_slope_t prev, self;
+
+	    _cairo_slope_init (&prev, p, &path->current_point);
+	    _cairo_slope_init (&self, &path->current_point, &point);
+	    if (_cairo_slope_equal (&prev, &self) &&
+		/* cannot trim anti-parallel segments whilst stroking */
+		! _cairo_slope_backwards (&prev, &self))
+	    {
+		_cairo_path_fixed_drop_line_to (path);
+		/* In this case the flags might be more restrictive than
+		 * what we actually need.
+		 * When changing the flags definition we should check if
+		 * changing the line_to point can affect them.
+		*/
+	    }
+	}
+    }
+
+    if (path->stroke_is_rectilinear) {
+	path->stroke_is_rectilinear = path->current_point.x == x ||
+				      path->current_point.y == y;
+	path->fill_is_rectilinear &= path->stroke_is_rectilinear;
+	path->fill_maybe_region &= path->fill_is_rectilinear;
+	if (path->fill_maybe_region) {
+	    path->fill_maybe_region = _cairo_fixed_is_integer (x) &&
+				      _cairo_fixed_is_integer (y);
+	}
+	if (path->fill_is_empty) {
+	    path->fill_is_empty = path->current_point.x == x &&
+				  path->current_point.y == y;
+	}
+    }
+
+    path->current_point = point;
+
+    _cairo_box_add_point (&path->extents, &point);
+
+    return _cairo_path_fixed_add (path, CAIRO_PATH_OP_LINE_TO, &point, 1);
+}
+
+cairo_status_t
+_cairo_path_fixed_rel_line_to (cairo_path_fixed_t *path,
+			       cairo_fixed_t	   dx,
+			       cairo_fixed_t	   dy)
+{
+    if (unlikely (! path->has_current_point))
+	return _cairo_error (CAIRO_STATUS_NO_CURRENT_POINT);
+
+    return _cairo_path_fixed_line_to (path,
+				      path->current_point.x + dx,
+				      path->current_point.y + dy);
+}
+
+cairo_status_t
+_cairo_path_fixed_curve_to (cairo_path_fixed_t	*path,
+			    cairo_fixed_t x0, cairo_fixed_t y0,
+			    cairo_fixed_t x1, cairo_fixed_t y1,
+			    cairo_fixed_t x2, cairo_fixed_t y2)
+{
+    cairo_status_t status;
+    cairo_point_t point[3];
+
+    /* If this curves does not move, replace it with a line-to.
+     * This frequently happens with rounded-rectangles and r==0.
+    */
+    if (path->current_point.x == x2 && path->current_point.y == y2) {
+	if (x1 == x2 && x0 == x2 && y1 == y2 && y0 == y2)
+	    return _cairo_path_fixed_line_to (path, x2, y2);
+
+	/* We may want to check for the absence of a cusp, in which case
+	 * we can also replace the curve-to with a line-to.
+	 */
+    }
+
+    /* make sure subpaths are started properly */
+    if (! path->has_current_point) {
+	status = _cairo_path_fixed_move_to (path, x0, y0);
+	assert (status == CAIRO_STATUS_SUCCESS);
+    }
+
+    status = _cairo_path_fixed_move_to_apply (path);
+    if (unlikely (status))
+	return status;
+
+    /* If the previous op was a degenerate LINE_TO, drop it. */
+    if (_cairo_path_fixed_last_op (path) == CAIRO_PATH_OP_LINE_TO) {
+	const cairo_point_t *p;
+
+	p = _cairo_path_fixed_penultimate_point (path);
+	if (p->x == path->current_point.x && p->y == path->current_point.y) {
+	    /* previous line element was degenerate, replace */
+	    _cairo_path_fixed_drop_line_to (path);
+	}
+    }
+
+    point[0].x = x0; point[0].y = y0;
+    point[1].x = x1; point[1].y = y1;
+    point[2].x = x2; point[2].y = y2;
+
+    _cairo_box_add_curve_to (&path->extents, &path->current_point,
+			     &point[0], &point[1], &point[2]);
+
+    path->current_point = point[2];
+    path->has_curve_to = TRUE;
+    path->stroke_is_rectilinear = FALSE;
+    path->fill_is_rectilinear = FALSE;
+    path->fill_maybe_region = FALSE;
+    path->fill_is_empty = FALSE;
+
+    return _cairo_path_fixed_add (path, CAIRO_PATH_OP_CURVE_TO, point, 3);
+}
+
+cairo_status_t
+_cairo_path_fixed_rel_curve_to (cairo_path_fixed_t *path,
+				cairo_fixed_t dx0, cairo_fixed_t dy0,
+				cairo_fixed_t dx1, cairo_fixed_t dy1,
+				cairo_fixed_t dx2, cairo_fixed_t dy2)
+{
+    if (unlikely (! path->has_current_point))
+	return _cairo_error (CAIRO_STATUS_NO_CURRENT_POINT);
+
+    return _cairo_path_fixed_curve_to (path,
+				       path->current_point.x + dx0,
+				       path->current_point.y + dy0,
+
+				       path->current_point.x + dx1,
+				       path->current_point.y + dy1,
+
+				       path->current_point.x + dx2,
+				       path->current_point.y + dy2);
+}
+
+cairo_status_t
+_cairo_path_fixed_close_path (cairo_path_fixed_t *path)
+{
+    cairo_status_t status;
+
+    if (! path->has_current_point)
+	return CAIRO_STATUS_SUCCESS;
+
+    /*
+     * Add a line_to, to compute flags and solve any degeneracy.
+     * It will be removed later (if it was actually added).
+     */
+    status = _cairo_path_fixed_line_to (path,
+					path->last_move_point.x,
+					path->last_move_point.y);
+    if (unlikely (status))
+	return status;
+
+    /*
+     * If the command used to close the path is a line_to, drop it.
+     * We must check that last command is actually a line_to,
+     * because the path could have been closed with a curve_to (and
+     * the previous line_to not added as it would be degenerate).
+     */
+    if (_cairo_path_fixed_last_op (path) == CAIRO_PATH_OP_LINE_TO)
+	    _cairo_path_fixed_drop_line_to (path);
+
+    path->needs_move_to = TRUE; /* After close_path, add an implicit move_to */
+
+    return _cairo_path_fixed_add (path, CAIRO_PATH_OP_CLOSE_PATH, NULL, 0);
+}
+
+cairo_bool_t
+_cairo_path_fixed_get_current_point (cairo_path_fixed_t *path,
+				     cairo_fixed_t	*x,
+				     cairo_fixed_t	*y)
+{
+    if (! path->has_current_point)
+	return FALSE;
+
+    *x = path->current_point.x;
+    *y = path->current_point.y;
+
+    return TRUE;
+}
+
+static cairo_status_t
+_cairo_path_fixed_add (cairo_path_fixed_t   *path,
+		       cairo_path_op_t	     op,
+		       const cairo_point_t  *points,
+		       int		     num_points)
+{
+    cairo_path_buf_t *buf = cairo_path_tail (path);
+
+    if (buf->num_ops + 1 > buf->size_ops ||
+	buf->num_points + num_points > buf->size_points)
+    {
+	buf = _cairo_path_buf_create (buf->num_ops * 2, buf->num_points * 2);
+	if (unlikely (buf == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_path_fixed_add_buf (path, buf);
+    }
+
+    if (WATCH_PATH) {
+	const char *op_str[] = {
+	    "move-to",
+	    "line-to",
+	    "curve-to",
+	    "close-path",
+	};
+	char buf[1024];
+	int len = 0;
+	int i;
+
+	len += snprintf (buf + len, sizeof (buf), "[");
+	for (i = 0; i < num_points; i++) {
+	    if (i != 0)
+		len += snprintf (buf + len, sizeof (buf), " ");
+	    len += snprintf (buf + len, sizeof (buf), "(%f, %f)",
+			     _cairo_fixed_to_double (points[i].x),
+			     _cairo_fixed_to_double (points[i].y));
+	}
+	len += snprintf (buf + len, sizeof (buf), "]");
+
+#define STRINGIFYFLAG(x)  (path->x ? #x " " : "")
+	fprintf (stderr,
+		 "_cairo_path_fixed_add (%s, %s) [%s%s%s%s%s%s%s%s]\n",
+		 op_str[(int) op], buf,
+		 STRINGIFYFLAG(has_current_point),
+		 STRINGIFYFLAG(needs_move_to),
+		 STRINGIFYFLAG(has_extents),
+		 STRINGIFYFLAG(has_curve_to),
+		 STRINGIFYFLAG(stroke_is_rectilinear),
+		 STRINGIFYFLAG(fill_is_rectilinear),
+		 STRINGIFYFLAG(fill_is_empty),
+		 STRINGIFYFLAG(fill_maybe_region)
+		 );
+#undef STRINGIFYFLAG
+    }
+
+    _cairo_path_buf_add_op (buf, op);
+    _cairo_path_buf_add_points (buf, points, num_points);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_path_fixed_add_buf (cairo_path_fixed_t *path,
+			   cairo_path_buf_t   *buf)
+{
+    cairo_list_add_tail (&buf->link, &cairo_path_head (path)->link);
+}
+
+COMPILE_TIME_ASSERT (sizeof (cairo_path_op_t) == 1);
+static cairo_path_buf_t *
+_cairo_path_buf_create (int size_ops, int size_points)
+{
+    cairo_path_buf_t *buf;
+
+    /* adjust size_ops to ensure that buf->points is naturally aligned */
+    size_ops += sizeof (double) - ((sizeof (cairo_path_buf_t) + size_ops) % sizeof (double));
+    buf = _cairo_malloc_ab_plus_c (size_points, sizeof (cairo_point_t), size_ops + sizeof (cairo_path_buf_t));
+    if (buf) {
+	buf->num_ops = 0;
+	buf->num_points = 0;
+	buf->size_ops = size_ops;
+	buf->size_points = size_points;
+
+	buf->op = (cairo_path_op_t *) (buf + 1);
+	buf->points = (cairo_point_t *) (buf->op + size_ops);
+    }
+
+    return buf;
+}
+
+static void
+_cairo_path_buf_destroy (cairo_path_buf_t *buf)
+{
+    free (buf);
+}
+
+static void
+_cairo_path_buf_add_op (cairo_path_buf_t *buf,
+			cairo_path_op_t	  op)
+{
+    buf->op[buf->num_ops++] = op;
+}
+
+static void
+_cairo_path_buf_add_points (cairo_path_buf_t       *buf,
+			    const cairo_point_t    *points,
+			    int		            num_points)
+{
+    if (num_points == 0)
+	return;
+
+    memcpy (buf->points + buf->num_points,
+	    points,
+	    sizeof (points[0]) * num_points);
+    buf->num_points += num_points;
+}
+
+cairo_status_t
+_cairo_path_fixed_interpret (const cairo_path_fixed_t		*path,
+			     cairo_path_fixed_move_to_func_t	*move_to,
+			     cairo_path_fixed_line_to_func_t	*line_to,
+			     cairo_path_fixed_curve_to_func_t	*curve_to,
+			     cairo_path_fixed_close_path_func_t	*close_path,
+			     void				*closure)
+{
+    const cairo_path_buf_t *buf;
+    cairo_status_t status;
+
+    cairo_path_foreach_buf_start (buf, path) {
+	const cairo_point_t *points = buf->points;
+	unsigned int i;
+
+	for (i = 0; i < buf->num_ops; i++) {
+	    switch (buf->op[i]) {
+	    case CAIRO_PATH_OP_MOVE_TO:
+		status = (*move_to) (closure, &points[0]);
+		points += 1;
+		break;
+	    case CAIRO_PATH_OP_LINE_TO:
+		status = (*line_to) (closure, &points[0]);
+		points += 1;
+		break;
+	    case CAIRO_PATH_OP_CURVE_TO:
+		status = (*curve_to) (closure, &points[0], &points[1], &points[2]);
+		points += 3;
+		break;
+	    default:
+		ASSERT_NOT_REACHED;
+	    case CAIRO_PATH_OP_CLOSE_PATH:
+		status = (*close_path) (closure);
+		break;
+	    }
+
+	    if (unlikely (status))
+		return status;
+	}
+    } cairo_path_foreach_buf_end (buf, path);
+
+    if (path->needs_move_to && path->has_current_point)
+	return (*move_to) (closure, &path->current_point);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+typedef struct _cairo_path_fixed_append_closure {
+    cairo_point_t	    offset;
+    cairo_path_fixed_t	    *path;
+} cairo_path_fixed_append_closure_t;
+
+static cairo_status_t
+_append_move_to (void		 *abstract_closure,
+		 const cairo_point_t  *point)
+{
+    cairo_path_fixed_append_closure_t	*closure = abstract_closure;
+
+    return _cairo_path_fixed_move_to (closure->path,
+				      point->x + closure->offset.x,
+				      point->y + closure->offset.y);
+}
+
+static cairo_status_t
+_append_line_to (void		 *abstract_closure,
+		 const cairo_point_t *point)
+{
+    cairo_path_fixed_append_closure_t	*closure = abstract_closure;
+
+    return _cairo_path_fixed_line_to (closure->path,
+				      point->x + closure->offset.x,
+				      point->y + closure->offset.y);
+}
+
+static cairo_status_t
+_append_curve_to (void	  *abstract_closure,
+		  const cairo_point_t *p0,
+		  const cairo_point_t *p1,
+		  const cairo_point_t *p2)
+{
+    cairo_path_fixed_append_closure_t	*closure = abstract_closure;
+
+    return _cairo_path_fixed_curve_to (closure->path,
+				       p0->x + closure->offset.x,
+				       p0->y + closure->offset.y,
+				       p1->x + closure->offset.x,
+				       p1->y + closure->offset.y,
+				       p2->x + closure->offset.x,
+				       p2->y + closure->offset.y);
+}
+
+static cairo_status_t
+_append_close_path (void *abstract_closure)
+{
+    cairo_path_fixed_append_closure_t	*closure = abstract_closure;
+
+    return _cairo_path_fixed_close_path (closure->path);
+}
+
+cairo_status_t
+_cairo_path_fixed_append (cairo_path_fixed_t		    *path,
+			  const cairo_path_fixed_t	    *other,
+			  cairo_fixed_t			     tx,
+			  cairo_fixed_t			     ty)
+{
+    cairo_path_fixed_append_closure_t closure;
+
+    closure.path = path;
+    closure.offset.x = tx;
+    closure.offset.y = ty;
+
+    return _cairo_path_fixed_interpret (other,
+					_append_move_to,
+					_append_line_to,
+					_append_curve_to,
+					_append_close_path,
+					&closure);
+}
+
+static void
+_cairo_path_fixed_offset_and_scale (cairo_path_fixed_t *path,
+				    cairo_fixed_t offx,
+				    cairo_fixed_t offy,
+				    cairo_fixed_t scalex,
+				    cairo_fixed_t scaley)
+{
+    cairo_path_buf_t *buf;
+    unsigned int i;
+
+    if (scalex == CAIRO_FIXED_ONE && scaley == CAIRO_FIXED_ONE) {
+	_cairo_path_fixed_translate (path, offx, offy);
+	return;
+    }
+
+    path->last_move_point.x = _cairo_fixed_mul (scalex, path->last_move_point.x) + offx;
+    path->last_move_point.y = _cairo_fixed_mul (scaley, path->last_move_point.y) + offy;
+    path->current_point.x   = _cairo_fixed_mul (scalex, path->current_point.x) + offx;
+    path->current_point.y   = _cairo_fixed_mul (scaley, path->current_point.y) + offy;
+
+    path->fill_maybe_region = TRUE;
+
+    cairo_path_foreach_buf_start (buf, path) {
+	 for (i = 0; i < buf->num_points; i++) {
+	     if (scalex != CAIRO_FIXED_ONE)
+		 buf->points[i].x = _cairo_fixed_mul (buf->points[i].x, scalex);
+	     buf->points[i].x += offx;
+
+	     if (scaley != CAIRO_FIXED_ONE)
+		 buf->points[i].y = _cairo_fixed_mul (buf->points[i].y, scaley);
+	     buf->points[i].y += offy;
+
+	    if (path->fill_maybe_region) {
+		path->fill_maybe_region = _cairo_fixed_is_integer (buf->points[i].x) &&
+					  _cairo_fixed_is_integer (buf->points[i].y);
+	    }
+	 }
+    } cairo_path_foreach_buf_end (buf, path);
+
+    path->fill_maybe_region &= path->fill_is_rectilinear;
+
+    path->extents.p1.x = _cairo_fixed_mul (scalex, path->extents.p1.x) + offx;
+    path->extents.p2.x = _cairo_fixed_mul (scalex, path->extents.p2.x) + offx;
+    if (scalex < 0) {
+	cairo_fixed_t t = path->extents.p1.x;
+	path->extents.p1.x = path->extents.p2.x;
+	path->extents.p2.x = t;
+    }
+
+    path->extents.p1.y = _cairo_fixed_mul (scaley, path->extents.p1.y) + offy;
+    path->extents.p2.y = _cairo_fixed_mul (scaley, path->extents.p2.y) + offy;
+    if (scaley < 0) {
+	cairo_fixed_t t = path->extents.p1.y;
+	path->extents.p1.y = path->extents.p2.y;
+	path->extents.p2.y = t;
+    }
+}
+
+void
+_cairo_path_fixed_translate (cairo_path_fixed_t *path,
+			     cairo_fixed_t offx,
+			     cairo_fixed_t offy)
+{
+    cairo_path_buf_t *buf;
+    unsigned int i;
+
+    if (offx == 0 && offy == 0)
+	return;
+
+    path->last_move_point.x += offx;
+    path->last_move_point.y += offy;
+    path->current_point.x += offx;
+    path->current_point.y += offy;
+
+    path->fill_maybe_region = TRUE;
+
+    cairo_path_foreach_buf_start (buf, path) {
+	for (i = 0; i < buf->num_points; i++) {
+	    buf->points[i].x += offx;
+	    buf->points[i].y += offy;
+
+	    if (path->fill_maybe_region) {
+		path->fill_maybe_region = _cairo_fixed_is_integer (buf->points[i].x) &&
+					  _cairo_fixed_is_integer (buf->points[i].y);
+	    }
+	 }
+    } cairo_path_foreach_buf_end (buf, path);
+
+    path->fill_maybe_region &= path->fill_is_rectilinear;
+
+    path->extents.p1.x += offx;
+    path->extents.p1.y += offy;
+    path->extents.p2.x += offx;
+    path->extents.p2.y += offy;
+}
+
+
+static inline void
+_cairo_path_fixed_transform_point (cairo_point_t *p,
+				   const cairo_matrix_t *matrix)
+{
+    double dx, dy;
+
+    dx = _cairo_fixed_to_double (p->x);
+    dy = _cairo_fixed_to_double (p->y);
+    cairo_matrix_transform_point (matrix, &dx, &dy);
+    p->x = _cairo_fixed_from_double (dx);
+    p->y = _cairo_fixed_from_double (dy);
+}
+
+/**
+ * _cairo_path_fixed_transform:
+ * @path: a #cairo_path_fixed_t to be transformed
+ * @matrix: a #cairo_matrix_t
+ *
+ * Transform the fixed-point path according to the given matrix.
+ * There is a fast path for the case where @matrix has no rotation
+ * or shear.
+ **/
+void
+_cairo_path_fixed_transform (cairo_path_fixed_t	*path,
+			     const cairo_matrix_t     *matrix)
+{
+    cairo_box_t extents;
+    cairo_point_t point;
+    cairo_path_buf_t *buf;
+    unsigned int i;
+
+    if (matrix->yx == 0.0 && matrix->xy == 0.0) {
+	/* Fast path for the common case of scale+transform */
+	_cairo_path_fixed_offset_and_scale (path,
+					    _cairo_fixed_from_double (matrix->x0),
+					    _cairo_fixed_from_double (matrix->y0),
+					    _cairo_fixed_from_double (matrix->xx),
+					    _cairo_fixed_from_double (matrix->yy));
+	return;
+    }
+
+    _cairo_path_fixed_transform_point (&path->last_move_point, matrix);
+    _cairo_path_fixed_transform_point (&path->current_point, matrix);
+
+    buf = cairo_path_head (path);
+    if (buf->num_points == 0)
+	return;
+
+    extents = path->extents;
+    point = buf->points[0];
+    _cairo_path_fixed_transform_point (&point, matrix);
+    _cairo_box_set (&path->extents, &point, &point);
+
+    cairo_path_foreach_buf_start (buf, path) {
+	for (i = 0; i < buf->num_points; i++) {
+	    _cairo_path_fixed_transform_point (&buf->points[i], matrix);
+	    _cairo_box_add_point (&path->extents, &buf->points[i]);
+	}
+    } cairo_path_foreach_buf_end (buf, path);
+
+    if (path->has_curve_to) {
+	cairo_bool_t is_tight;
+
+	_cairo_matrix_transform_bounding_box_fixed (matrix, &extents, &is_tight);
+	if (!is_tight) {
+	    cairo_bool_t has_extents;
+
+	    has_extents = _cairo_path_bounder_extents (path, &extents);
+	    assert (has_extents);
+	}
+	path->extents = extents;
+    }
+
+    /* flags might become more strict than needed */
+    path->stroke_is_rectilinear = FALSE;
+    path->fill_is_rectilinear = FALSE;
+    path->fill_is_empty = FALSE;
+    path->fill_maybe_region = FALSE;
+}
+
+/* Closure for path flattening */
+typedef struct cairo_path_flattener {
+    double tolerance;
+    cairo_point_t current_point;
+    cairo_path_fixed_move_to_func_t	*move_to;
+    cairo_path_fixed_line_to_func_t	*line_to;
+    cairo_path_fixed_close_path_func_t	*close_path;
+    void *closure;
+} cpf_t;
+
+static cairo_status_t
+_cpf_move_to (void *closure,
+	      const cairo_point_t *point)
+{
+    cpf_t *cpf = closure;
+
+    cpf->current_point = *point;
+
+    return cpf->move_to (cpf->closure, point);
+}
+
+static cairo_status_t
+_cpf_line_to (void *closure,
+	      const cairo_point_t *point)
+{
+    cpf_t *cpf = closure;
+
+    cpf->current_point = *point;
+
+    return cpf->line_to (cpf->closure, point);
+}
+
+static cairo_status_t
+_cpf_curve_to (void		*closure,
+	       const cairo_point_t	*p1,
+	       const cairo_point_t	*p2,
+	       const cairo_point_t	*p3)
+{
+    cpf_t *cpf = closure;
+    cairo_spline_t spline;
+
+    cairo_point_t *p0 = &cpf->current_point;
+
+    if (! _cairo_spline_init (&spline,
+			      (cairo_spline_add_point_func_t)cpf->line_to,
+			      cpf->closure,
+			      p0, p1, p2, p3))
+    {
+	return _cpf_line_to (closure, p3);
+    }
+
+    cpf->current_point = *p3;
+
+    return _cairo_spline_decompose (&spline, cpf->tolerance);
+}
+
+static cairo_status_t
+_cpf_close_path (void *closure)
+{
+    cpf_t *cpf = closure;
+
+    return cpf->close_path (cpf->closure);
+}
+
+cairo_status_t
+_cairo_path_fixed_interpret_flat (const cairo_path_fixed_t		*path,
+				  cairo_path_fixed_move_to_func_t	*move_to,
+				  cairo_path_fixed_line_to_func_t	*line_to,
+				  cairo_path_fixed_close_path_func_t	*close_path,
+				  void					*closure,
+				  double				tolerance)
+{
+    cpf_t flattener;
+
+    if (! path->has_curve_to) {
+	return _cairo_path_fixed_interpret (path,
+					    move_to,
+					    line_to,
+					    NULL,
+					    close_path,
+					    closure);
+    }
+
+    flattener.tolerance = tolerance;
+    flattener.move_to = move_to;
+    flattener.line_to = line_to;
+    flattener.close_path = close_path;
+    flattener.closure = closure;
+    return _cairo_path_fixed_interpret (path,
+					_cpf_move_to,
+					_cpf_line_to,
+					_cpf_curve_to,
+					_cpf_close_path,
+					&flattener);
+}
+
+static inline void
+_canonical_box (cairo_box_t *box,
+		const cairo_point_t *p1,
+		const cairo_point_t *p2)
+{
+    if (p1->x <= p2->x) {
+	box->p1.x = p1->x;
+	box->p2.x = p2->x;
+    } else {
+	box->p1.x = p2->x;
+	box->p2.x = p1->x;
+    }
+
+    if (p1->y <= p2->y) {
+	box->p1.y = p1->y;
+	box->p2.y = p2->y;
+    } else {
+	box->p1.y = p2->y;
+	box->p2.y = p1->y;
+    }
+}
+
+static inline cairo_bool_t
+_path_is_quad (const cairo_path_fixed_t *path)
+{
+    const cairo_path_buf_t *buf = cairo_path_head (path);
+
+    /* Do we have the right number of ops? */
+    if (buf->num_ops < 4 || buf->num_ops > 6)
+	return FALSE;
+
+    /* Check whether the ops are those that would be used for a rectangle */
+    if (buf->op[0] != CAIRO_PATH_OP_MOVE_TO ||
+	buf->op[1] != CAIRO_PATH_OP_LINE_TO ||
+	buf->op[2] != CAIRO_PATH_OP_LINE_TO ||
+	buf->op[3] != CAIRO_PATH_OP_LINE_TO)
+    {
+	return FALSE;
+    }
+
+    /* we accept an implicit close for filled paths */
+    if (buf->num_ops > 4) {
+	/* Now, there are choices. The rectangle might end with a LINE_TO
+	 * (to the original point), but this isn't required. If it
+	 * doesn't, then it must end with a CLOSE_PATH. */
+	if (buf->op[4] == CAIRO_PATH_OP_LINE_TO) {
+	    if (buf->points[4].x != buf->points[0].x ||
+		buf->points[4].y != buf->points[0].y)
+		return FALSE;
+	} else if (buf->op[4] != CAIRO_PATH_OP_CLOSE_PATH) {
+	    return FALSE;
+	}
+
+	if (buf->num_ops == 6) {
+	    /* A trailing CLOSE_PATH or MOVE_TO is ok */
+	    if (buf->op[5] != CAIRO_PATH_OP_MOVE_TO &&
+		buf->op[5] != CAIRO_PATH_OP_CLOSE_PATH)
+		return FALSE;
+	}
+    }
+
+    return TRUE;
+}
+
+static inline cairo_bool_t
+_points_form_rect (const cairo_point_t *points)
+{
+    if (points[0].y == points[1].y &&
+	points[1].x == points[2].x &&
+	points[2].y == points[3].y &&
+	points[3].x == points[0].x)
+	return TRUE;
+    if (points[0].x == points[1].x &&
+	points[1].y == points[2].y &&
+	points[2].x == points[3].x &&
+	points[3].y == points[0].y)
+	return TRUE;
+    return FALSE;
+}
+
+/*
+ * Check whether the given path contains a single rectangle.
+ */
+cairo_bool_t
+_cairo_path_fixed_is_box (const cairo_path_fixed_t *path,
+			  cairo_box_t *box)
+{
+    const cairo_path_buf_t *buf;
+
+    if (! path->fill_is_rectilinear)
+	return FALSE;
+
+    if (! _path_is_quad (path))
+	return FALSE;
+
+    buf = cairo_path_head (path);
+    if (_points_form_rect (buf->points)) {
+	_canonical_box (box, &buf->points[0], &buf->points[2]);
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+/* Determine whether two lines A->B and C->D intersect based on the 
+ * algorithm described here: http://paulbourke.net/geometry/pointlineplane/ */
+static inline cairo_bool_t
+_lines_intersect_or_are_coincident (cairo_point_t a,
+				    cairo_point_t b,
+				    cairo_point_t c,
+				    cairo_point_t d)
+{
+    cairo_int64_t numerator_a, numerator_b, denominator;
+    cairo_bool_t denominator_negative;
+
+    denominator = _cairo_int64_sub (_cairo_int32x32_64_mul (d.y - c.y, b.x - a.x),
+				    _cairo_int32x32_64_mul (d.x - c.x, b.y - a.y));
+    numerator_a = _cairo_int64_sub (_cairo_int32x32_64_mul (d.x - c.x, a.y - c.y),
+				    _cairo_int32x32_64_mul (d.y - c.y, a.x - c.x));
+    numerator_b = _cairo_int64_sub (_cairo_int32x32_64_mul (b.x - a.x, a.y - c.y),
+				    _cairo_int32x32_64_mul (b.y - a.y, a.x - c.x));
+
+    if (_cairo_int64_is_zero (denominator)) {
+	/* If the denominator and numerators are both zero,
+	 * the lines are coincident. */
+	if (_cairo_int64_is_zero (numerator_a) && _cairo_int64_is_zero (numerator_b))
+	    return TRUE;
+
+	/* Otherwise, a zero denominator indicates the lines are
+	*  parallel and never intersect. */
+	return FALSE;
+    }
+
+    /* The lines intersect if both quotients are between 0 and 1 (exclusive). */
+
+     /* We first test whether either quotient is a negative number. */
+    denominator_negative = _cairo_int64_negative (denominator);
+    if (_cairo_int64_negative (numerator_a) ^ denominator_negative)
+	return FALSE;
+    if (_cairo_int64_negative (numerator_b) ^ denominator_negative)
+	return FALSE;
+
+    /* A zero quotient indicates an "intersection" at an endpoint, which
+     * we aren't considering a true intersection. */
+    if (_cairo_int64_is_zero (numerator_a) || _cairo_int64_is_zero (numerator_b))
+	return FALSE;
+
+    /* If the absolute value of the numerator is larger than or equal to the
+     * denominator the result of the division would be greater than or equal
+     * to one. */
+    if (! denominator_negative) {
+        if (! _cairo_int64_lt (numerator_a, denominator) ||
+	    ! _cairo_int64_lt (numerator_b, denominator))
+	    return FALSE;
+    } else {
+        if (! _cairo_int64_lt (denominator, numerator_a) ||
+	    ! _cairo_int64_lt (denominator, numerator_b))
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_path_fixed_is_simple_quad (const cairo_path_fixed_t *path)
+{
+    const cairo_point_t *points;
+
+    if (! _path_is_quad (path))
+	return FALSE;
+
+    points = cairo_path_head (path)->points;
+    if (_points_form_rect (points))
+	return TRUE;
+
+    if (_lines_intersect_or_are_coincident (points[0], points[1],
+					    points[3], points[2]))
+	return FALSE;
+
+    if (_lines_intersect_or_are_coincident (points[0], points[3],
+					    points[1], points[2]))
+	return FALSE;
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_path_fixed_is_stroke_box (const cairo_path_fixed_t *path,
+				 cairo_box_t *box)
+{
+    const cairo_path_buf_t *buf = cairo_path_head (path);
+
+    if (! path->fill_is_rectilinear)
+	return FALSE;
+
+    /* Do we have the right number of ops? */
+    if (buf->num_ops != 5)
+	return FALSE;
+
+    /* Check whether the ops are those that would be used for a rectangle */
+    if (buf->op[0] != CAIRO_PATH_OP_MOVE_TO ||
+	buf->op[1] != CAIRO_PATH_OP_LINE_TO ||
+	buf->op[2] != CAIRO_PATH_OP_LINE_TO ||
+	buf->op[3] != CAIRO_PATH_OP_LINE_TO ||
+	buf->op[4] != CAIRO_PATH_OP_CLOSE_PATH)
+    {
+	return FALSE;
+    }
+
+    /* Ok, we may have a box, if the points line up */
+    if (buf->points[0].y == buf->points[1].y &&
+	buf->points[1].x == buf->points[2].x &&
+	buf->points[2].y == buf->points[3].y &&
+	buf->points[3].x == buf->points[0].x)
+    {
+	_canonical_box (box, &buf->points[0], &buf->points[2]);
+	return TRUE;
+    }
+
+    if (buf->points[0].x == buf->points[1].x &&
+	buf->points[1].y == buf->points[2].y &&
+	buf->points[2].x == buf->points[3].x &&
+	buf->points[3].y == buf->points[0].y)
+    {
+	_canonical_box (box, &buf->points[0], &buf->points[2]);
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+/*
+ * Check whether the given path contains a single rectangle
+ * that is logically equivalent to:
+ * <informalexample><programlisting>
+ *   cairo_move_to (cr, x, y);
+ *   cairo_rel_line_to (cr, width, 0);
+ *   cairo_rel_line_to (cr, 0, height);
+ *   cairo_rel_line_to (cr, -width, 0);
+ *   cairo_close_path (cr);
+ * </programlisting></informalexample>
+ */
+cairo_bool_t
+_cairo_path_fixed_is_rectangle (const cairo_path_fixed_t *path,
+				cairo_box_t        *box)
+{
+    const cairo_path_buf_t *buf;
+
+    if (! _cairo_path_fixed_is_box (path, box))
+	return FALSE;
+
+    /* This check is valid because the current implementation of
+     * _cairo_path_fixed_is_box () only accepts rectangles like:
+     * move,line,line,line[,line|close[,close|move]]. */
+    buf = cairo_path_head (path);
+    if (buf->num_ops > 4)
+	return TRUE;
+
+    return FALSE;
+}
+
+void
+_cairo_path_fixed_iter_init (cairo_path_fixed_iter_t *iter,
+			     const cairo_path_fixed_t *path)
+{
+    iter->first = iter->buf = cairo_path_head (path);
+    iter->n_op = 0;
+    iter->n_point = 0;
+}
+
+static cairo_bool_t
+_cairo_path_fixed_iter_next_op (cairo_path_fixed_iter_t *iter)
+{
+    if (++iter->n_op >= iter->buf->num_ops) {
+	iter->buf = cairo_path_buf_next (iter->buf);
+	if (iter->buf == iter->first) {
+	    iter->buf = NULL;
+	    return FALSE;
+	}
+
+	iter->n_op = 0;
+	iter->n_point = 0;
+    }
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_path_fixed_iter_is_fill_box (cairo_path_fixed_iter_t *_iter,
+				    cairo_box_t *box)
+{
+    cairo_point_t points[5];
+    cairo_path_fixed_iter_t iter;
+
+    if (_iter->buf == NULL)
+	return FALSE;
+
+    iter = *_iter;
+
+    if (iter.n_op == iter.buf->num_ops && ! _cairo_path_fixed_iter_next_op (&iter))
+	return FALSE;
+
+    /* Check whether the ops are those that would be used for a rectangle */
+    if (iter.buf->op[iter.n_op] != CAIRO_PATH_OP_MOVE_TO)
+	return FALSE;
+    points[0] = iter.buf->points[iter.n_point++];
+    if (! _cairo_path_fixed_iter_next_op (&iter))
+	return FALSE;
+
+    if (iter.buf->op[iter.n_op] != CAIRO_PATH_OP_LINE_TO)
+	return FALSE;
+    points[1] = iter.buf->points[iter.n_point++];
+    if (! _cairo_path_fixed_iter_next_op (&iter))
+	return FALSE;
+
+    /* a horizontal/vertical closed line is also a degenerate rectangle */
+    switch (iter.buf->op[iter.n_op]) {
+    case CAIRO_PATH_OP_CLOSE_PATH:
+	_cairo_path_fixed_iter_next_op (&iter);
+    case CAIRO_PATH_OP_MOVE_TO: /* implicit close */
+	box->p1 = box->p2 = points[0];
+	*_iter = iter;
+	return TRUE;
+    default:
+	return FALSE;
+    case CAIRO_PATH_OP_LINE_TO:
+	break;
+    }
+
+    points[2] = iter.buf->points[iter.n_point++];
+    if (! _cairo_path_fixed_iter_next_op (&iter))
+	return FALSE;
+
+    if (iter.buf->op[iter.n_op] != CAIRO_PATH_OP_LINE_TO)
+	return FALSE;
+    points[3] = iter.buf->points[iter.n_point++];
+
+    /* Now, there are choices. The rectangle might end with a LINE_TO
+     * (to the original point), but this isn't required. If it
+     * doesn't, then it must end with a CLOSE_PATH (which may be implicit). */
+    if (! _cairo_path_fixed_iter_next_op (&iter)) {
+	/* implicit close due to fill */
+    } else if (iter.buf->op[iter.n_op] == CAIRO_PATH_OP_LINE_TO) {
+	points[4] = iter.buf->points[iter.n_point++];
+	if (points[4].x != points[0].x || points[4].y != points[0].y)
+	    return FALSE;
+	_cairo_path_fixed_iter_next_op (&iter);
+    } else if (iter.buf->op[iter.n_op] == CAIRO_PATH_OP_CLOSE_PATH) {
+	_cairo_path_fixed_iter_next_op (&iter);
+    } else if (iter.buf->op[iter.n_op] == CAIRO_PATH_OP_MOVE_TO) {
+	/* implicit close-path due to new-sub-path */
+    } else {
+	return FALSE;
+    }
+
+    /* Ok, we may have a box, if the points line up */
+    if (points[0].y == points[1].y &&
+	points[1].x == points[2].x &&
+	points[2].y == points[3].y &&
+	points[3].x == points[0].x)
+    {
+	box->p1 = points[0];
+	box->p2 = points[2];
+	*_iter = iter;
+	return TRUE;
+    }
+
+    if (points[0].x == points[1].x &&
+	points[1].y == points[2].y &&
+	points[2].x == points[3].x &&
+	points[3].y == points[0].y)
+    {
+	box->p1 = points[1];
+	box->p2 = points[3];
+	*_iter = iter;
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+cairo_bool_t
+_cairo_path_fixed_iter_at_end (const cairo_path_fixed_iter_t *iter)
+{
+    if (iter->buf == NULL)
+	return TRUE;
+
+    return iter->n_op == iter->buf->num_ops;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-in-fill.c b/libs/cairo-1.16.0/src/cairo-path-in-fill.c
new file mode 100644
index 0000000..1787fb1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-in-fill.c
@@ -0,0 +1,290 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-path-fixed-private.h"
+
+typedef struct cairo_in_fill {
+    double tolerance;
+    cairo_bool_t on_edge;
+    int winding;
+
+    cairo_fixed_t x, y;
+
+    cairo_bool_t has_current_point;
+    cairo_point_t current_point;
+    cairo_point_t first_point;
+} cairo_in_fill_t;
+
+static void
+_cairo_in_fill_init (cairo_in_fill_t	*in_fill,
+		     double		 tolerance,
+		     double		 x,
+		     double		 y)
+{
+    in_fill->on_edge = FALSE;
+    in_fill->winding = 0;
+    in_fill->tolerance = tolerance;
+
+    in_fill->x = _cairo_fixed_from_double (x);
+    in_fill->y = _cairo_fixed_from_double (y);
+
+    in_fill->has_current_point = FALSE;
+    in_fill->current_point.x = 0;
+    in_fill->current_point.y = 0;
+}
+
+static void
+_cairo_in_fill_fini (cairo_in_fill_t *in_fill)
+{
+}
+
+static int
+edge_compare_for_y_against_x (const cairo_point_t *p1,
+			      const cairo_point_t *p2,
+			      cairo_fixed_t y,
+			      cairo_fixed_t x)
+{
+    cairo_fixed_t adx, ady;
+    cairo_fixed_t dx, dy;
+    cairo_int64_t L, R;
+
+    adx = p2->x - p1->x;
+    dx = x - p1->x;
+
+    if (adx == 0)
+	return -dx;
+    if ((adx ^ dx) < 0)
+	return adx;
+
+    dy = y - p1->y;
+    ady = p2->y - p1->y;
+
+    L = _cairo_int32x32_64_mul (dy, adx);
+    R = _cairo_int32x32_64_mul (dx, ady);
+
+    return _cairo_int64_cmp (L, R);
+}
+
+static void
+_cairo_in_fill_add_edge (cairo_in_fill_t *in_fill,
+			 const cairo_point_t *p1,
+			 const cairo_point_t *p2)
+{
+    int dir;
+
+    if (in_fill->on_edge)
+	return;
+
+    /* count the number of edge crossing to -∞ */
+
+    dir = 1;
+    if (p2->y < p1->y) {
+	const cairo_point_t *tmp;
+
+	tmp = p1;
+	p1 = p2;
+	p2 = tmp;
+
+	dir = -1;
+    }
+
+    /* First check whether the query is on an edge */
+    if ((p1->x == in_fill->x && p1->y == in_fill->y) ||
+	(p2->x == in_fill->x && p2->y == in_fill->y) ||
+	(! (p2->y < in_fill->y || p1->y > in_fill->y ||
+	   (p1->x > in_fill->x && p2->x > in_fill->x) ||
+	   (p1->x < in_fill->x && p2->x < in_fill->x)) &&
+	 edge_compare_for_y_against_x (p1, p2, in_fill->y, in_fill->x) == 0))
+    {
+	in_fill->on_edge = TRUE;
+	return;
+    }
+
+    /* edge is entirely above or below, note the shortening rule */
+    if (p2->y <= in_fill->y || p1->y > in_fill->y)
+	return;
+
+    /* edge lies wholly to the right */
+    if (p1->x >= in_fill->x && p2->x >= in_fill->x)
+	return;
+
+    if ((p1->x <= in_fill->x && p2->x <= in_fill->x) ||
+	edge_compare_for_y_against_x (p1, p2, in_fill->y, in_fill->x) < 0)
+    {
+	in_fill->winding += dir;
+    }
+}
+
+static cairo_status_t
+_cairo_in_fill_move_to (void *closure,
+			const cairo_point_t *point)
+{
+    cairo_in_fill_t *in_fill = closure;
+
+    /* implicit close path */
+    if (in_fill->has_current_point) {
+	_cairo_in_fill_add_edge (in_fill,
+				 &in_fill->current_point,
+				 &in_fill->first_point);
+    }
+
+    in_fill->first_point = *point;
+    in_fill->current_point = *point;
+    in_fill->has_current_point = TRUE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_in_fill_line_to (void *closure,
+			const cairo_point_t *point)
+{
+    cairo_in_fill_t *in_fill = closure;
+
+    if (in_fill->has_current_point)
+	_cairo_in_fill_add_edge (in_fill, &in_fill->current_point, point);
+
+    in_fill->current_point = *point;
+    in_fill->has_current_point = TRUE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_in_fill_curve_to (void *closure,
+			 const cairo_point_t *b,
+			 const cairo_point_t *c,
+			 const cairo_point_t *d)
+{
+    cairo_in_fill_t *in_fill = closure;
+    cairo_spline_t spline;
+    cairo_fixed_t top, bot, left;
+
+    /* first reject based on bbox */
+    bot = top = in_fill->current_point.y;
+    if (b->y < top) top = b->y;
+    if (b->y > bot) bot = b->y;
+    if (c->y < top) top = c->y;
+    if (c->y > bot) bot = c->y;
+    if (d->y < top) top = d->y;
+    if (d->y > bot) bot = d->y;
+    if (bot < in_fill->y || top > in_fill->y) {
+	in_fill->current_point = *d;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    left = in_fill->current_point.x;
+    if (b->x < left) left = b->x;
+    if (c->x < left) left = c->x;
+    if (d->x < left) left = d->x;
+    if (left > in_fill->x) {
+	in_fill->current_point = *d;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* XXX Investigate direct inspection of the inflections? */
+    if (! _cairo_spline_init (&spline,
+			      (cairo_spline_add_point_func_t)_cairo_in_fill_line_to,
+			      in_fill,
+			      &in_fill->current_point, b, c, d))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    return _cairo_spline_decompose (&spline, in_fill->tolerance);
+}
+
+static cairo_status_t
+_cairo_in_fill_close_path (void *closure)
+{
+    cairo_in_fill_t *in_fill = closure;
+
+    if (in_fill->has_current_point) {
+	_cairo_in_fill_add_edge (in_fill,
+				 &in_fill->current_point,
+				 &in_fill->first_point);
+
+	in_fill->has_current_point = FALSE;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_bool_t
+_cairo_path_fixed_in_fill (const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t	 fill_rule,
+			   double		 tolerance,
+			   double		 x,
+			   double		 y)
+{
+    cairo_in_fill_t in_fill;
+    cairo_status_t status;
+    cairo_bool_t is_inside;
+
+    if (_cairo_path_fixed_fill_is_empty (path))
+	return FALSE;
+
+    _cairo_in_fill_init (&in_fill, tolerance, x, y);
+
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_in_fill_move_to,
+					  _cairo_in_fill_line_to,
+					  _cairo_in_fill_curve_to,
+					  _cairo_in_fill_close_path,
+					  &in_fill);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _cairo_in_fill_close_path (&in_fill);
+
+    if (in_fill.on_edge) {
+	is_inside = TRUE;
+    } else switch (fill_rule) {
+    case CAIRO_FILL_RULE_EVEN_ODD:
+	is_inside = in_fill.winding & 1;
+	break;
+    case CAIRO_FILL_RULE_WINDING:
+	is_inside = in_fill.winding != 0;
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+	is_inside = FALSE;
+	break;
+    }
+
+    _cairo_in_fill_fini (&in_fill);
+
+    return is_inside;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-private.h b/libs/cairo-1.16.0/src/cairo-path-private.h
new file mode 100644
index 0000000..7b54317
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-private.h
@@ -0,0 +1,57 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_PATH_PRIVATE_H
+#define CAIRO_PATH_PRIVATE_H
+
+#include "cairoint.h"
+
+cairo_private cairo_path_t *
+_cairo_path_create (cairo_path_fixed_t *path,
+		    cairo_t		*cr);
+
+cairo_private cairo_path_t *
+_cairo_path_create_flat (cairo_path_fixed_t *path,
+			 cairo_t	    *cr);
+
+cairo_private cairo_path_t *
+_cairo_path_create_in_error (cairo_status_t status);
+
+cairo_private cairo_status_t
+_cairo_path_append_to_context (const cairo_path_t	*path,
+			       cairo_t			*cr);
+
+#endif /* CAIRO_PATH_DATA_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-path-stroke-boxes.c b/libs/cairo-1.16.0/src/cairo-path-stroke-boxes.c
new file mode 100644
index 0000000..fba170c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-stroke-boxes.c
@@ -0,0 +1,711 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#define _DEFAULT_SOURCE /* for hypot() */
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-slope-private.h"
+#include "cairo-stroke-dash-private.h"
+
+typedef struct _segment_t {
+    cairo_point_t p1, p2;
+    unsigned flags;
+#define HORIZONTAL 0x1
+#define FORWARDS 0x2
+#define JOIN 0x4
+} segment_t;
+
+typedef struct _cairo_rectilinear_stroker {
+    const cairo_stroke_style_t *stroke_style;
+    const cairo_matrix_t *ctm;
+    cairo_antialias_t antialias;
+
+    cairo_fixed_t half_line_x, half_line_y;
+    cairo_boxes_t *boxes;
+    cairo_point_t current_point;
+    cairo_point_t first_point;
+    cairo_bool_t open_sub_path;
+
+    cairo_stroker_dash_t dash;
+
+    cairo_bool_t has_bounds;
+    cairo_box_t bounds;
+
+    int num_segments;
+    int segments_size;
+    segment_t *segments;
+    segment_t segments_embedded[8]; /* common case is a single rectangle */
+} cairo_rectilinear_stroker_t;
+
+static void
+_cairo_rectilinear_stroker_limit (cairo_rectilinear_stroker_t *stroker,
+				  const cairo_box_t *boxes,
+				  int num_boxes)
+{
+    stroker->has_bounds = TRUE;
+    _cairo_boxes_get_extents (boxes, num_boxes, &stroker->bounds);
+
+    stroker->bounds.p1.x -= stroker->half_line_x;
+    stroker->bounds.p2.x += stroker->half_line_x;
+
+    stroker->bounds.p1.y -= stroker->half_line_y;
+    stroker->bounds.p2.y += stroker->half_line_y;
+}
+
+static cairo_bool_t
+_cairo_rectilinear_stroker_init (cairo_rectilinear_stroker_t	*stroker,
+				 const cairo_stroke_style_t	*stroke_style,
+				 const cairo_matrix_t		*ctm,
+				 cairo_antialias_t		 antialias,
+				 cairo_boxes_t			*boxes)
+{
+    /* This special-case rectilinear stroker only supports
+     * miter-joined lines (not curves) and a translation-only matrix
+     * (though it could probably be extended to support a matrix with
+     * uniform, integer scaling).
+     *
+     * It also only supports horizontal and vertical line_to
+     * elements. But we don't catch that here, but instead return
+     * UNSUPPORTED from _cairo_rectilinear_stroker_line_to if any
+     * non-rectilinear line_to is encountered.
+     */
+    if (stroke_style->line_join	!= CAIRO_LINE_JOIN_MITER)
+	return FALSE;
+
+    /* If the miter limit turns right angles into bevels, then we
+     * can't use this optimization. Remember, the ratio is
+     * 1/sin(ɸ/2). So the cutoff is 1/sin(π/4.0) or ⎷2,
+     * which we round for safety. */
+    if (stroke_style->miter_limit < M_SQRT2)
+	return FALSE;
+
+    if (! (stroke_style->line_cap == CAIRO_LINE_CAP_BUTT ||
+	   stroke_style->line_cap == CAIRO_LINE_CAP_SQUARE))
+    {
+	return FALSE;
+    }
+
+    if (! _cairo_matrix_is_scale (ctm))
+	return FALSE;
+
+    stroker->stroke_style = stroke_style;
+    stroker->ctm = ctm;
+    stroker->antialias = antialias;
+
+    stroker->half_line_x =
+	_cairo_fixed_from_double (fabs(ctm->xx) * stroke_style->line_width / 2.0);
+    stroker->half_line_y =
+	_cairo_fixed_from_double (fabs(ctm->yy) * stroke_style->line_width / 2.0);
+
+    stroker->open_sub_path = FALSE;
+    stroker->segments = stroker->segments_embedded;
+    stroker->segments_size = ARRAY_LENGTH (stroker->segments_embedded);
+    stroker->num_segments = 0;
+
+    _cairo_stroker_dash_init (&stroker->dash, stroke_style);
+
+    stroker->has_bounds = FALSE;
+
+    stroker->boxes = boxes;
+
+    return TRUE;
+}
+
+static void
+_cairo_rectilinear_stroker_fini (cairo_rectilinear_stroker_t	*stroker)
+{
+    if (stroker->segments != stroker->segments_embedded)
+	free (stroker->segments);
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_add_segment (cairo_rectilinear_stroker_t *stroker,
+					const cairo_point_t	*p1,
+					const cairo_point_t	*p2,
+					unsigned		 flags)
+{
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (stroker->num_segments == stroker->segments_size) {
+	int new_size = stroker->segments_size * 2;
+	segment_t *new_segments;
+
+	if (stroker->segments == stroker->segments_embedded) {
+	    new_segments = _cairo_malloc_ab (new_size, sizeof (segment_t));
+	    if (unlikely (new_segments == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (new_segments, stroker->segments,
+		    stroker->num_segments * sizeof (segment_t));
+	} else {
+	    new_segments = _cairo_realloc_ab (stroker->segments,
+					      new_size, sizeof (segment_t));
+	    if (unlikely (new_segments == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	stroker->segments_size = new_size;
+	stroker->segments = new_segments;
+    }
+
+    stroker->segments[stroker->num_segments].p1 = *p1;
+    stroker->segments[stroker->num_segments].p2 = *p2;
+    stroker->segments[stroker->num_segments].flags = flags;
+    stroker->num_segments++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_emit_segments (cairo_rectilinear_stroker_t *stroker)
+{
+    cairo_line_cap_t line_cap = stroker->stroke_style->line_cap;
+    cairo_fixed_t half_line_x = stroker->half_line_x;
+    cairo_fixed_t half_line_y = stroker->half_line_y;
+    cairo_status_t status;
+    int i, j;
+
+    /* For each segment we generate a single rectangle.
+     * This rectangle is based on a perpendicular extension (by half the
+     * line width) of the segment endpoints * after some adjustments of the
+     * endpoints to account for caps and joins.
+     */
+    for (i = 0; i < stroker->num_segments; i++) {
+	cairo_bool_t lengthen_initial, lengthen_final;
+	cairo_point_t *a, *b;
+	cairo_box_t box;
+
+	a = &stroker->segments[i].p1;
+	b = &stroker->segments[i].p2;
+
+	/* We adjust the initial point of the segment to extend the
+	 * rectangle to include the previous cap or join, (this
+	 * adjustment applies to all segments except for the first
+	 * segment of open, butt-capped paths). However, we must be
+	 * careful not to emit a miter join across a degenerate segment
+	 * which has been elided.
+	 *
+	 * Overlapping segments will be eliminated by the tessellation.
+	 * Ideally, we would not emit these self-intersections at all,
+	 * but that is tricky with segments shorter than half_line_width.
+	 */
+	j = i == 0 ? stroker->num_segments - 1 : i-1;
+	lengthen_initial = (stroker->segments[i].flags ^ stroker->segments[j].flags) & HORIZONTAL;
+	j = i == stroker->num_segments - 1 ? 0 : i+1;
+	lengthen_final = (stroker->segments[i].flags ^ stroker->segments[j].flags) & HORIZONTAL;
+	if (stroker->open_sub_path) {
+	    if (i == 0)
+		lengthen_initial = line_cap != CAIRO_LINE_CAP_BUTT;
+
+	    if (i == stroker->num_segments - 1)
+		lengthen_final = line_cap != CAIRO_LINE_CAP_BUTT;
+	}
+
+	/* Perform the adjustments of the endpoints. */
+	if (lengthen_initial | lengthen_final) {
+	    if (a->y == b->y) {
+		if (a->x < b->x) {
+		    if (lengthen_initial)
+			a->x -= half_line_x;
+		    if (lengthen_final)
+			b->x += half_line_x;
+		} else {
+		    if (lengthen_initial)
+			a->x += half_line_x;
+		    if (lengthen_final)
+			b->x -= half_line_x;
+		}
+	    } else {
+		if (a->y < b->y) {
+		    if (lengthen_initial)
+			a->y -= half_line_y;
+		    if (lengthen_final)
+			b->y += half_line_y;
+		} else {
+		    if (lengthen_initial)
+			a->y += half_line_y;
+		    if (lengthen_final)
+			b->y -= half_line_y;
+		}
+	    }
+	}
+
+	/* Form the rectangle by expanding by half the line width in
+	 * either perpendicular direction. */
+	if (a->y == b->y) {
+	    a->y -= half_line_y;
+	    b->y += half_line_y;
+	} else {
+	    a->x -= half_line_x;
+	    b->x += half_line_x;
+	}
+
+	if (a->x < b->x) {
+	    box.p1.x = a->x;
+	    box.p2.x = b->x;
+	} else {
+	    box.p1.x = b->x;
+	    box.p2.x = a->x;
+	}
+	if (a->y < b->y) {
+	    box.p1.y = a->y;
+	    box.p2.y = b->y;
+	} else {
+	    box.p1.y = b->y;
+	    box.p2.y = a->y;
+	}
+
+	status = _cairo_boxes_add (stroker->boxes, stroker->antialias, &box);
+	if (unlikely (status))
+	    return status;
+    }
+
+    stroker->num_segments = 0;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_emit_segments_dashed (cairo_rectilinear_stroker_t *stroker)
+{
+    cairo_status_t status;
+    cairo_line_cap_t line_cap = stroker->stroke_style->line_cap;
+    cairo_fixed_t half_line_x = stroker->half_line_x;
+    cairo_fixed_t half_line_y = stroker->half_line_y;
+    int i;
+
+    for (i = 0; i < stroker->num_segments; i++) {
+	cairo_point_t *a, *b;
+	cairo_bool_t is_horizontal;
+	cairo_box_t box;
+
+	a = &stroker->segments[i].p1;
+	b = &stroker->segments[i].p2;
+
+	is_horizontal = stroker->segments[i].flags & HORIZONTAL;
+
+	/* Handle the joins for a potentially degenerate segment. */
+	if (line_cap == CAIRO_LINE_CAP_BUTT &&
+	    stroker->segments[i].flags & JOIN &&
+	    (i != stroker->num_segments - 1 ||
+	     (! stroker->open_sub_path && stroker->dash.dash_starts_on)))
+	{
+	    cairo_slope_t out_slope;
+	    int j = (i + 1) % stroker->num_segments;
+	    cairo_bool_t forwards = !!(stroker->segments[i].flags & FORWARDS);
+
+	    _cairo_slope_init (&out_slope,
+			       &stroker->segments[j].p1,
+			       &stroker->segments[j].p2);
+	    box.p2 = box.p1 = stroker->segments[i].p2;
+
+	    if (is_horizontal) {
+		if (forwards)
+		    box.p2.x += half_line_x;
+		else
+		    box.p1.x -= half_line_x;
+
+		if (out_slope.dy > 0)
+		    box.p1.y -= half_line_y;
+		else
+		    box.p2.y += half_line_y;
+	    } else {
+		if (forwards)
+		    box.p2.y += half_line_y;
+		else
+		    box.p1.y -= half_line_y;
+
+		if (out_slope.dx > 0)
+		    box.p1.x -= half_line_x;
+		else
+		    box.p2.x += half_line_x;
+	    }
+
+	    status = _cairo_boxes_add (stroker->boxes, stroker->antialias, &box);
+	    if (unlikely (status))
+		return status;
+	}
+
+	/* Perform the adjustments of the endpoints. */
+	if (is_horizontal) {
+	    if (line_cap == CAIRO_LINE_CAP_SQUARE) {
+		if (a->x <= b->x) {
+		    a->x -= half_line_x;
+		    b->x += half_line_x;
+		} else {
+		    a->x += half_line_x;
+		    b->x -= half_line_x;
+		}
+	    }
+
+	    a->y += half_line_y;
+	    b->y -= half_line_y;
+	} else {
+	    if (line_cap == CAIRO_LINE_CAP_SQUARE) {
+		if (a->y <= b->y) {
+		    a->y -= half_line_y;
+		    b->y += half_line_y;
+		} else {
+		    a->y += half_line_y;
+		    b->y -= half_line_y;
+		}
+	    }
+
+	    a->x += half_line_x;
+	    b->x -= half_line_x;
+	}
+
+	if (a->x == b->x && a->y == b->y)
+	    continue;
+
+	if (a->x < b->x) {
+	    box.p1.x = a->x;
+	    box.p2.x = b->x;
+	} else {
+	    box.p1.x = b->x;
+	    box.p2.x = a->x;
+	}
+	if (a->y < b->y) {
+	    box.p1.y = a->y;
+	    box.p2.y = b->y;
+	} else {
+	    box.p1.y = b->y;
+	    box.p2.y = a->y;
+	}
+
+	status = _cairo_boxes_add (stroker->boxes, stroker->antialias, &box);
+	if (unlikely (status))
+	    return status;
+    }
+
+    stroker->num_segments = 0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_move_to (void		*closure,
+				    const cairo_point_t	*point)
+{
+    cairo_rectilinear_stroker_t *stroker = closure;
+    cairo_status_t status;
+
+    if (stroker->dash.dashed)
+	status = _cairo_rectilinear_stroker_emit_segments_dashed (stroker);
+    else
+	status = _cairo_rectilinear_stroker_emit_segments (stroker);
+    if (unlikely (status))
+	return status;
+
+    /* reset the dash pattern for new sub paths */
+    _cairo_stroker_dash_start (&stroker->dash);
+
+    stroker->current_point = *point;
+    stroker->first_point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_line_to (void		*closure,
+				    const cairo_point_t	*b)
+{
+    cairo_rectilinear_stroker_t *stroker = closure;
+    cairo_point_t *a = &stroker->current_point;
+    cairo_status_t status;
+
+    /* We only support horizontal or vertical elements. */
+    assert (a->x == b->x || a->y == b->y);
+
+    /* We don't draw anything for degenerate paths. */
+    if (a->x == b->x && a->y == b->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_rectilinear_stroker_add_segment (stroker, a, b,
+						     (a->y == b->y) | JOIN);
+
+    stroker->current_point = *b;
+    stroker->open_sub_path = TRUE;
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_line_to_dashed (void		*closure,
+					   const cairo_point_t	*point)
+{
+    cairo_rectilinear_stroker_t *stroker = closure;
+    const cairo_point_t *a = &stroker->current_point;
+    const cairo_point_t *b = point;
+    cairo_bool_t fully_in_bounds;
+    double sf, sign, remain;
+    cairo_fixed_t mag;
+    cairo_status_t status;
+    cairo_line_t segment;
+    cairo_bool_t dash_on = FALSE;
+    unsigned is_horizontal;
+
+    /* We don't draw anything for degenerate paths. */
+    if (a->x == b->x && a->y == b->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* We only support horizontal or vertical elements. */
+    assert (a->x == b->x || a->y == b->y);
+
+    fully_in_bounds = TRUE;
+    if (stroker->has_bounds &&
+	(! _cairo_box_contains_point (&stroker->bounds, a) ||
+	 ! _cairo_box_contains_point (&stroker->bounds, b)))
+    {
+	fully_in_bounds = FALSE;
+    }
+
+    is_horizontal = a->y == b->y;
+    if (is_horizontal) {
+	mag = b->x - a->x;
+	sf = fabs (stroker->ctm->xx);
+    } else {
+	mag = b->y - a->y;
+	sf = fabs (stroker->ctm->yy);
+    }
+    if (mag < 0) {
+	remain = _cairo_fixed_to_double (-mag);
+	sign = 1.;
+    } else {
+	remain = _cairo_fixed_to_double (mag);
+	is_horizontal |= FORWARDS;
+	sign = -1.;
+    }
+
+    segment.p2 = segment.p1 = *a;
+    while (remain > 0.) {
+	double step_length;
+
+	step_length = MIN (sf * stroker->dash.dash_remain, remain);
+	remain -= step_length;
+
+	mag = _cairo_fixed_from_double (sign*remain);
+	if (is_horizontal & 0x1)
+	    segment.p2.x = b->x + mag;
+	else
+	    segment.p2.y = b->y + mag;
+
+	if (stroker->dash.dash_on &&
+	    (fully_in_bounds ||
+	     _cairo_box_intersects_line_segment (&stroker->bounds, &segment)))
+	{
+	    status = _cairo_rectilinear_stroker_add_segment (stroker,
+							     &segment.p1,
+							     &segment.p2,
+							     is_horizontal | (remain <= 0.) << 2);
+	    if (unlikely (status))
+		return status;
+
+	    dash_on = TRUE;
+	}
+	else
+	{
+	    dash_on = FALSE;
+	}
+
+	_cairo_stroker_dash_step (&stroker->dash, step_length / sf);
+	segment.p1 = segment.p2;
+    }
+
+    if (stroker->dash.dash_on && ! dash_on &&
+	(fully_in_bounds ||
+	 _cairo_box_intersects_line_segment (&stroker->bounds, &segment)))
+    {
+
+	/* This segment ends on a transition to dash_on, compute a new face
+	 * and add cap for the beginning of the next dash_on step.
+	 */
+
+	status = _cairo_rectilinear_stroker_add_segment (stroker,
+							 &segment.p1,
+							 &segment.p1,
+							 is_horizontal | JOIN);
+	if (unlikely (status))
+	    return status;
+    }
+
+    stroker->current_point = *point;
+    stroker->open_sub_path = TRUE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_rectilinear_stroker_close_path (void *closure)
+{
+    cairo_rectilinear_stroker_t *stroker = closure;
+    cairo_status_t status;
+
+    /* We don't draw anything for degenerate paths. */
+    if (! stroker->open_sub_path)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (stroker->dash.dashed) {
+	status = _cairo_rectilinear_stroker_line_to_dashed (stroker,
+							    &stroker->first_point);
+    } else {
+	status = _cairo_rectilinear_stroker_line_to (stroker,
+						     &stroker->first_point);
+    }
+    if (unlikely (status))
+	return status;
+
+    stroker->open_sub_path = FALSE;
+
+    if (stroker->dash.dashed)
+	status = _cairo_rectilinear_stroker_emit_segments_dashed (stroker);
+    else
+	status = _cairo_rectilinear_stroker_emit_segments (stroker);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_path_fixed_stroke_rectilinear_to_boxes (const cairo_path_fixed_t	*path,
+					       const cairo_stroke_style_t	*stroke_style,
+					       const cairo_matrix_t	*ctm,
+					       cairo_antialias_t	 antialias,
+					       cairo_boxes_t		*boxes)
+{
+    cairo_rectilinear_stroker_t rectilinear_stroker;
+    cairo_int_status_t status;
+    cairo_box_t box;
+
+    assert (_cairo_path_fixed_stroke_is_rectilinear (path));
+
+    if (! _cairo_rectilinear_stroker_init (&rectilinear_stroker,
+					   stroke_style, ctm, antialias,
+					   boxes))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (! rectilinear_stroker.dash.dashed &&
+	_cairo_path_fixed_is_stroke_box (path, &box) &&
+	/* if the segments overlap we need to feed them into the tessellator */
+	box.p2.x - box.p1.x > 2* rectilinear_stroker.half_line_x &&
+	box.p2.y - box.p1.y > 2* rectilinear_stroker.half_line_y)
+    {
+	cairo_box_t b;
+
+	/* top */
+	b.p1.x = box.p1.x - rectilinear_stroker.half_line_x;
+	b.p2.x = box.p2.x + rectilinear_stroker.half_line_x;
+	b.p1.y = box.p1.y - rectilinear_stroker.half_line_y;
+	b.p2.y = box.p1.y + rectilinear_stroker.half_line_y;
+	status = _cairo_boxes_add (boxes, antialias, &b);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+	/* left  (excluding top/bottom) */
+	b.p1.x = box.p1.x - rectilinear_stroker.half_line_x;
+	b.p2.x = box.p1.x + rectilinear_stroker.half_line_x;
+	b.p1.y = box.p1.y + rectilinear_stroker.half_line_y;
+	b.p2.y = box.p2.y - rectilinear_stroker.half_line_y;
+	status = _cairo_boxes_add (boxes, antialias, &b);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+	/* right  (excluding top/bottom) */
+	b.p1.x = box.p2.x - rectilinear_stroker.half_line_x;
+	b.p2.x = box.p2.x + rectilinear_stroker.half_line_x;
+	b.p1.y = box.p1.y + rectilinear_stroker.half_line_y;
+	b.p2.y = box.p2.y - rectilinear_stroker.half_line_y;
+	status = _cairo_boxes_add (boxes, antialias, &b);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+	/* bottom */
+	b.p1.x = box.p1.x - rectilinear_stroker.half_line_x;
+	b.p2.x = box.p2.x + rectilinear_stroker.half_line_x;
+	b.p1.y = box.p2.y - rectilinear_stroker.half_line_y;
+	b.p2.y = box.p2.y + rectilinear_stroker.half_line_y;
+	status = _cairo_boxes_add (boxes, antialias, &b);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+	goto done;
+    }
+
+    if (boxes->num_limits) {
+	_cairo_rectilinear_stroker_limit (&rectilinear_stroker,
+					  boxes->limits,
+					  boxes->num_limits);
+    }
+
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_rectilinear_stroker_move_to,
+					  rectilinear_stroker.dash.dashed ?
+					  _cairo_rectilinear_stroker_line_to_dashed :
+					  _cairo_rectilinear_stroker_line_to,
+					  NULL,
+					  _cairo_rectilinear_stroker_close_path,
+					  &rectilinear_stroker);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (rectilinear_stroker.dash.dashed)
+	status = _cairo_rectilinear_stroker_emit_segments_dashed (&rectilinear_stroker);
+    else
+	status = _cairo_rectilinear_stroker_emit_segments (&rectilinear_stroker);
+    if (unlikely (status))
+	goto BAIL;
+
+    /* As we incrementally tessellate, we do not eliminate self-intersections */
+    status = _cairo_bentley_ottmann_tessellate_boxes (boxes,
+						      CAIRO_FILL_RULE_WINDING,
+						      boxes);
+    if (unlikely (status))
+	goto BAIL;
+
+done:
+    _cairo_rectilinear_stroker_fini (&rectilinear_stroker);
+    return CAIRO_STATUS_SUCCESS;
+
+BAIL:
+    _cairo_rectilinear_stroker_fini (&rectilinear_stroker);
+    _cairo_boxes_clear (boxes);
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-stroke-polygon.c b/libs/cairo-1.16.0/src/cairo-path-stroke-polygon.c
new file mode 100644
index 0000000..29050fa
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-stroke-polygon.c
@@ -0,0 +1,1364 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#define _DEFAULT_SOURCE /* for hypot() */
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-contour-inline.h"
+#include "cairo-contour-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-slope-private.h"
+
+#define DEBUG 0
+
+struct stroker {
+    cairo_stroke_style_t style;
+
+#if DEBUG
+    cairo_contour_t path;
+#endif
+
+    struct stroke_contour {
+	/* Note that these are not strictly contours as they may intersect */
+	cairo_contour_t contour;
+    } cw, ccw;
+    cairo_uint64_t contour_tolerance;
+    cairo_polygon_t *polygon;
+
+    const cairo_matrix_t *ctm;
+    const cairo_matrix_t *ctm_inverse;
+    double tolerance;
+    double spline_cusp_tolerance;
+    double half_line_width;
+    cairo_bool_t ctm_det_positive;
+
+    cairo_pen_t pen;
+
+    cairo_point_t first_point;
+
+    cairo_bool_t has_initial_sub_path;
+
+    cairo_bool_t has_current_face;
+    cairo_stroke_face_t current_face;
+
+    cairo_bool_t has_first_face;
+    cairo_stroke_face_t first_face;
+
+    cairo_bool_t has_bounds;
+    cairo_box_t bounds;
+};
+
+static inline double
+normalize_slope (double *dx, double *dy);
+
+static void
+compute_face (const cairo_point_t *point,
+	      const cairo_slope_t *dev_slope,
+	      struct stroker *stroker,
+	      cairo_stroke_face_t *face);
+
+static cairo_uint64_t
+point_distance_sq (const cairo_point_t *p1,
+			const cairo_point_t *p2)
+{
+    int32_t dx = p1->x - p2->x;
+    int32_t dy = p1->y - p2->y;
+    return _cairo_int32x32_64_mul (dx, dx) + _cairo_int32x32_64_mul (dy, dy);
+}
+
+static cairo_bool_t
+within_tolerance (const cairo_point_t *p1,
+	      const cairo_point_t *p2,
+	      cairo_uint64_t tolerance)
+{
+    return FALSE;
+    return _cairo_int64_lt (point_distance_sq (p1, p2), tolerance);
+}
+
+static void
+contour_add_point (struct stroker *stroker,
+		   struct stroke_contour *c,
+		   const cairo_point_t *point)
+{
+    if (! within_tolerance (point, _cairo_contour_last_point (&c->contour),
+			stroker->contour_tolerance))
+	_cairo_contour_add_point (&c->contour, point);
+    //*_cairo_contour_last_point (&c->contour) = *point;
+}
+
+static void
+translate_point (cairo_point_t *point, const cairo_point_t *offset)
+{
+    point->x += offset->x;
+    point->y += offset->y;
+}
+
+static int
+slope_compare_sgn (double dx1, double dy1, double dx2, double dy2)
+{
+    double  c = (dx1 * dy2 - dx2 * dy1);
+
+    if (c > 0) return 1;
+    if (c < 0) return -1;
+    return 0;
+}
+
+static inline int
+range_step (int i, int step, int max)
+{
+    i += step;
+    if (i < 0)
+	i = max - 1;
+    if (i >= max)
+	i = 0;
+    return i;
+}
+
+/*
+ * Construct a fan around the midpoint using the vertices from pen between
+ * inpt and outpt.
+ */
+static void
+add_fan (struct stroker *stroker,
+	 const cairo_slope_t *in_vector,
+	 const cairo_slope_t *out_vector,
+	 const cairo_point_t *midpt,
+	 cairo_bool_t clockwise,
+	 struct stroke_contour *c)
+{
+    cairo_pen_t *pen = &stroker->pen;
+    int start, stop;
+
+    if (stroker->has_bounds &&
+	! _cairo_box_contains_point (&stroker->bounds, midpt))
+	return;
+
+    assert (stroker->pen.num_vertices);
+
+    if (clockwise) {
+	_cairo_pen_find_active_cw_vertices (pen,
+					    in_vector, out_vector,
+					    &start, &stop);
+	while (start != stop) {
+	    cairo_point_t p = *midpt;
+	    translate_point (&p, &pen->vertices[start].point);
+	    contour_add_point (stroker, c, &p);
+
+	    if (++start == pen->num_vertices)
+		start = 0;
+	}
+    } else {
+	_cairo_pen_find_active_ccw_vertices (pen,
+					     in_vector, out_vector,
+					     &start, &stop);
+	while (start != stop) {
+	    cairo_point_t p = *midpt;
+	    translate_point (&p, &pen->vertices[start].point);
+	    contour_add_point (stroker, c, &p);
+
+	    if (start-- == 0)
+		start += pen->num_vertices;
+	}
+    }
+}
+
+static int
+join_is_clockwise (const cairo_stroke_face_t *in,
+		   const cairo_stroke_face_t *out)
+{
+    return _cairo_slope_compare (&in->dev_vector, &out->dev_vector) < 0;
+}
+
+static void
+inner_join (struct stroker *stroker,
+	    const cairo_stroke_face_t *in,
+	    const cairo_stroke_face_t *out,
+	    int clockwise)
+{
+#if 0
+    cairo_point_t last;
+    const cairo_point_t *p, *outpt;
+    struct stroke_contour *inner;
+    cairo_int64_t d_p, d_last;
+    cairo_int64_t half_line_width;
+    cairo_bool_t negate;
+
+    /* XXX line segments shorter than line-width */
+
+    if (clockwise) {
+	inner = &stroker->ccw;
+	outpt = &out->ccw;
+	negate = 1;
+    } else {
+	inner = &stroker->cw;
+	outpt = &out->cw;
+	negate = 0;
+    }
+
+    half_line_width = CAIRO_FIXED_ONE*CAIRO_FIXED_ONE/2 * stroker->style.line_width * out->length + .5;
+
+    /* On the inside, the previous end-point is always
+     * closer to the new face by definition.
+     */
+    last = *_cairo_contour_last_point (&inner->contour);
+    d_last = distance_from_face (out, &last, negate);
+    _cairo_contour_remove_last_point (&inner->contour);
+
+prev:
+    if (inner->contour.chain.num_points == 0) {
+	contour_add_point (stroker, inner, outpt);
+	return;
+    }
+    p = _cairo_contour_last_point (&inner->contour);
+    d_p = distance_from_face (out, p, negate);
+    if (_cairo_int64_lt (d_p, half_line_width) &&
+	!_cairo_int64_negative (distance_along_face (out, p)))
+    {
+	last = *p;
+	d_last = d_p;
+	_cairo_contour_remove_last_point (&inner->contour);
+	goto prev;
+    }
+
+    compute_inner_joint (&last, d_last, p, d_p, half_line_width);
+    contour_add_point (stroker, inner, &last);
+#else
+    const cairo_point_t *outpt;
+    struct stroke_contour *inner;
+
+    if (clockwise) {
+	inner = &stroker->ccw;
+	outpt = &out->ccw;
+    } else {
+	inner = &stroker->cw;
+	outpt = &out->cw;
+    }
+    contour_add_point (stroker, inner, &in->point);
+    contour_add_point (stroker, inner, outpt);
+#endif
+}
+
+static void
+inner_close (struct stroker *stroker,
+	     const cairo_stroke_face_t *in,
+	     cairo_stroke_face_t *out)
+{
+#if 0
+    cairo_point_t last;
+    const cairo_point_t *p, *outpt, *inpt;
+    struct stroke_contour *inner;
+    struct _cairo_contour_chain *chain;
+
+    /* XXX line segments shorter than line-width */
+
+    if (join_is_clockwise (in, out)) {
+	inner = &stroker->ccw;
+	outpt = &in->ccw;
+	inpt = &out->ccw;
+    } else {
+	inner = &stroker->cw;
+	outpt = &in->cw;
+	inpt = &out->cw;
+    }
+
+    if (inner->contour.chain.num_points == 0) {
+	contour_add_point (stroker, inner, &in->point);
+	contour_add_point (stroker, inner, inpt);
+	*_cairo_contour_first_point (&inner->contour) =
+	    *_cairo_contour_last_point (&inner->contour);
+	return;
+    }
+
+    line_width = stroker->style.line_width/2;
+    line_width *= CAIRO_FIXED_ONE;
+
+    d_last = sign * distance_from_face (out, outpt);
+    last = *outpt;
+
+    for (chain = &inner->contour.chain; chain; chain = chain->next) {
+	for (i = 0; i < chain->num_points; i++) {
+	    p = &chain->points[i];
+	    if ((d_p = sign * distance_from_face (in, p)) >= line_width &&
+		distance_from_edge (stroker, inpt, &last, p) < line_width)
+	    {
+		goto out;
+	    }
+
+	    if (p->x != last.x || p->y != last.y) {
+		last = *p;
+		d_last = d_p;
+	    }
+	}
+    }
+out:
+
+    if (d_p != d_last) {
+	double dot = (line_width - d_last) / (d_p - d_last);
+	last.x += dot * (p->x - last.x);
+	last.y += dot * (p->y - last.y);
+    }
+    *_cairo_contour_last_point (&inner->contour) = last;
+
+    for (chain = &inner->contour.chain; chain; chain = chain->next) {
+	for (i = 0; i < chain->num_points; i++) {
+	    cairo_point_t *pp = &chain->points[i];
+	    if (pp == p)
+		return;
+	    *pp = last;
+	}
+    }
+#else
+    const cairo_point_t *inpt;
+    struct stroke_contour *inner;
+
+    if (join_is_clockwise (in, out)) {
+	inner = &stroker->ccw;
+	inpt = &out->ccw;
+    } else {
+	inner = &stroker->cw;
+	inpt = &out->cw;
+    }
+
+    contour_add_point (stroker, inner, &in->point);
+    contour_add_point (stroker, inner, inpt);
+    *_cairo_contour_first_point (&inner->contour) =
+	*_cairo_contour_last_point (&inner->contour);
+#endif
+}
+
+static void
+outer_close (struct stroker *stroker,
+	     const cairo_stroke_face_t *in,
+	     const cairo_stroke_face_t *out)
+{
+    const cairo_point_t	*inpt, *outpt;
+    struct stroke_contour *outer;
+    int	clockwise;
+
+    if (in->cw.x == out->cw.x && in->cw.y == out->cw.y &&
+	in->ccw.x == out->ccw.x && in->ccw.y == out->ccw.y)
+    {
+	return;
+    }
+
+    clockwise = join_is_clockwise (in, out);
+    if (clockwise) {
+	inpt = &in->cw;
+	outpt = &out->cw;
+	outer = &stroker->cw;
+    } else {
+	inpt = &in->ccw;
+	outpt = &out->ccw;
+	outer = &stroker->ccw;
+    }
+
+    if (within_tolerance (inpt, outpt, stroker->contour_tolerance)) {
+	*_cairo_contour_first_point (&outer->contour) =
+	    *_cairo_contour_last_point (&outer->contour);
+	return;
+    }
+
+    switch (stroker->style.line_join) {
+    case CAIRO_LINE_JOIN_ROUND:
+	/* construct a fan around the common midpoint */
+	if ((in->dev_slope.x * out->dev_slope.x +
+	     in->dev_slope.y * out->dev_slope.y) < stroker->spline_cusp_tolerance)
+	{
+	    add_fan (stroker,
+		     &in->dev_vector, &out->dev_vector, &in->point,
+		     clockwise, outer);
+	    break;
+	}
+
+    case CAIRO_LINE_JOIN_MITER:
+    default: {
+	/* dot product of incoming slope vector with outgoing slope vector */
+	double	in_dot_out = in->dev_slope.x * out->dev_slope.x +
+			     in->dev_slope.y * out->dev_slope.y;
+	double	ml = stroker->style.miter_limit;
+
+	/* Check the miter limit -- lines meeting at an acute angle
+	 * can generate long miters, the limit converts them to bevel
+	 *
+	 * Consider the miter join formed when two line segments
+	 * meet at an angle psi:
+	 *
+	 *	   /.\
+	 *	  /. .\
+	 *	 /./ \.\
+	 *	/./psi\.\
+	 *
+	 * We can zoom in on the right half of that to see:
+	 *
+	 *	    |\
+	 *	    | \ psi/2
+	 *	    |  \
+	 *	    |   \
+	 *	    |    \
+	 *	    |     \
+	 *	  miter    \
+	 *	 length     \
+	 *	    |        \
+	 *	    |        .\
+	 *	    |    .     \
+	 *	    |.   line   \
+	 *	     \    width  \
+	 *	      \           \
+	 *
+	 *
+	 * The right triangle in that figure, (the line-width side is
+	 * shown faintly with three '.' characters), gives us the
+	 * following expression relating miter length, angle and line
+	 * width:
+	 *
+	 *	1 /sin (psi/2) = miter_length / line_width
+	 *
+	 * The right-hand side of this relationship is the same ratio
+	 * in which the miter limit (ml) is expressed. We want to know
+	 * when the miter length is within the miter limit. That is
+	 * when the following condition holds:
+	 *
+	 *	1/sin(psi/2) <= ml
+	 *	1 <= ml sin(psi/2)
+	 *	1 <= ml² sin²(psi/2)
+	 *	2 <= ml² 2 sin²(psi/2)
+	 *				2·sin²(psi/2) = 1-cos(psi)
+	 *	2 <= ml² (1-cos(psi))
+	 *
+	 *				in · out = |in| |out| cos (psi)
+	 *
+	 * in and out are both unit vectors, so:
+	 *
+	 *				in · out = cos (psi)
+	 *
+	 *	2 <= ml² (1 - in · out)
+	 *
+	 */
+	if (2 <= ml * ml * (1 + in_dot_out)) {
+	    double		x1, y1, x2, y2;
+	    double		mx, my;
+	    double		dx1, dx2, dy1, dy2;
+	    double		ix, iy;
+	    double		fdx1, fdy1, fdx2, fdy2;
+	    double		mdx, mdy;
+
+	    /*
+	     * we've got the points already transformed to device
+	     * space, but need to do some computation with them and
+	     * also need to transform the slope from user space to
+	     * device space
+	     */
+	    /* outer point of incoming line face */
+	    x1 = _cairo_fixed_to_double (inpt->x);
+	    y1 = _cairo_fixed_to_double (inpt->y);
+	    dx1 = in->dev_slope.x;
+	    dy1 = in->dev_slope.y;
+
+	    /* outer point of outgoing line face */
+	    x2 = _cairo_fixed_to_double (outpt->x);
+	    y2 = _cairo_fixed_to_double (outpt->y);
+	    dx2 = out->dev_slope.x;
+	    dy2 = out->dev_slope.y;
+
+	    /*
+	     * Compute the location of the outer corner of the miter.
+	     * That's pretty easy -- just the intersection of the two
+	     * outer edges.  We've got slopes and points on each
+	     * of those edges.  Compute my directly, then compute
+	     * mx by using the edge with the larger dy; that avoids
+	     * dividing by values close to zero.
+	     */
+	    my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) /
+		  (dx1 * dy2 - dx2 * dy1));
+	    if (fabs (dy1) >= fabs (dy2))
+		mx = (my - y1) * dx1 / dy1 + x1;
+	    else
+		mx = (my - y2) * dx2 / dy2 + x2;
+
+	    /*
+	     * When the two outer edges are nearly parallel, slight
+	     * perturbations in the position of the outer points of the lines
+	     * caused by representing them in fixed point form can cause the
+	     * intersection point of the miter to move a large amount. If
+	     * that moves the miter intersection from between the two faces,
+	     * then draw a bevel instead.
+	     */
+
+	    ix = _cairo_fixed_to_double (in->point.x);
+	    iy = _cairo_fixed_to_double (in->point.y);
+
+	    /* slope of one face */
+	    fdx1 = x1 - ix; fdy1 = y1 - iy;
+
+	    /* slope of the other face */
+	    fdx2 = x2 - ix; fdy2 = y2 - iy;
+
+	    /* slope from the intersection to the miter point */
+	    mdx = mx - ix; mdy = my - iy;
+
+	    /*
+	     * Make sure the miter point line lies between the two
+	     * faces by comparing the slopes
+	     */
+	    if (slope_compare_sgn (fdx1, fdy1, mdx, mdy) !=
+		slope_compare_sgn (fdx2, fdy2, mdx, mdy))
+	    {
+		cairo_point_t p;
+
+		p.x = _cairo_fixed_from_double (mx);
+		p.y = _cairo_fixed_from_double (my);
+
+		*_cairo_contour_last_point (&outer->contour) = p;
+		*_cairo_contour_first_point (&outer->contour) = p;
+		return;
+	    }
+	}
+	break;
+    }
+
+    case CAIRO_LINE_JOIN_BEVEL:
+	break;
+    }
+    contour_add_point (stroker, outer, outpt);
+}
+
+static void
+outer_join (struct stroker *stroker,
+	    const cairo_stroke_face_t *in,
+	    const cairo_stroke_face_t *out,
+	    int clockwise)
+{
+    const cairo_point_t	*inpt, *outpt;
+    struct stroke_contour *outer;
+
+    if (in->cw.x == out->cw.x && in->cw.y == out->cw.y &&
+	in->ccw.x == out->ccw.x && in->ccw.y == out->ccw.y)
+    {
+	return;
+    }
+    if (clockwise) {
+	inpt = &in->cw;
+	outpt = &out->cw;
+	outer = &stroker->cw;
+    } else {
+	inpt = &in->ccw;
+	outpt = &out->ccw;
+	outer = &stroker->ccw;
+    }
+
+    switch (stroker->style.line_join) {
+    case CAIRO_LINE_JOIN_ROUND:
+	/* construct a fan around the common midpoint */
+	add_fan (stroker,
+		 &in->dev_vector, &out->dev_vector, &in->point,
+		 clockwise, outer);
+	break;
+
+    case CAIRO_LINE_JOIN_MITER:
+    default: {
+	/* dot product of incoming slope vector with outgoing slope vector */
+	double	in_dot_out = in->dev_slope.x * out->dev_slope.x +
+			     in->dev_slope.y * out->dev_slope.y;
+	double	ml = stroker->style.miter_limit;
+
+	/* Check the miter limit -- lines meeting at an acute angle
+	 * can generate long miters, the limit converts them to bevel
+	 *
+	 * Consider the miter join formed when two line segments
+	 * meet at an angle psi:
+	 *
+	 *	   /.\
+	 *	  /. .\
+	 *	 /./ \.\
+	 *	/./psi\.\
+	 *
+	 * We can zoom in on the right half of that to see:
+	 *
+	 *	    |\
+	 *	    | \ psi/2
+	 *	    |  \
+	 *	    |   \
+	 *	    |    \
+	 *	    |     \
+	 *	  miter    \
+	 *	 length     \
+	 *	    |        \
+	 *	    |        .\
+	 *	    |    .     \
+	 *	    |.   line   \
+	 *	     \    width  \
+	 *	      \           \
+	 *
+	 *
+	 * The right triangle in that figure, (the line-width side is
+	 * shown faintly with three '.' characters), gives us the
+	 * following expression relating miter length, angle and line
+	 * width:
+	 *
+	 *	1 /sin (psi/2) = miter_length / line_width
+	 *
+	 * The right-hand side of this relationship is the same ratio
+	 * in which the miter limit (ml) is expressed. We want to know
+	 * when the miter length is within the miter limit. That is
+	 * when the following condition holds:
+	 *
+	 *	1/sin(psi/2) <= ml
+	 *	1 <= ml sin(psi/2)
+	 *	1 <= ml² sin²(psi/2)
+	 *	2 <= ml² 2 sin²(psi/2)
+	 *				2·sin²(psi/2) = 1-cos(psi)
+	 *	2 <= ml² (1-cos(psi))
+	 *
+	 *				in · out = |in| |out| cos (psi)
+	 *
+	 * in and out are both unit vectors, so:
+	 *
+	 *				in · out = cos (psi)
+	 *
+	 *	2 <= ml² (1 - in · out)
+	 *
+	 */
+	if (2 <= ml * ml * (1 + in_dot_out)) {
+	    double		x1, y1, x2, y2;
+	    double		mx, my;
+	    double		dx1, dx2, dy1, dy2;
+	    double		ix, iy;
+	    double		fdx1, fdy1, fdx2, fdy2;
+	    double		mdx, mdy;
+
+	    /*
+	     * we've got the points already transformed to device
+	     * space, but need to do some computation with them and
+	     * also need to transform the slope from user space to
+	     * device space
+	     */
+	    /* outer point of incoming line face */
+	    x1 = _cairo_fixed_to_double (inpt->x);
+	    y1 = _cairo_fixed_to_double (inpt->y);
+	    dx1 = in->dev_slope.x;
+	    dy1 = in->dev_slope.y;
+
+	    /* outer point of outgoing line face */
+	    x2 = _cairo_fixed_to_double (outpt->x);
+	    y2 = _cairo_fixed_to_double (outpt->y);
+	    dx2 = out->dev_slope.x;
+	    dy2 = out->dev_slope.y;
+
+	    /*
+	     * Compute the location of the outer corner of the miter.
+	     * That's pretty easy -- just the intersection of the two
+	     * outer edges.  We've got slopes and points on each
+	     * of those edges.  Compute my directly, then compute
+	     * mx by using the edge with the larger dy; that avoids
+	     * dividing by values close to zero.
+	     */
+	    my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) /
+		  (dx1 * dy2 - dx2 * dy1));
+	    if (fabs (dy1) >= fabs (dy2))
+		mx = (my - y1) * dx1 / dy1 + x1;
+	    else
+		mx = (my - y2) * dx2 / dy2 + x2;
+
+	    /*
+	     * When the two outer edges are nearly parallel, slight
+	     * perturbations in the position of the outer points of the lines
+	     * caused by representing them in fixed point form can cause the
+	     * intersection point of the miter to move a large amount. If
+	     * that moves the miter intersection from between the two faces,
+	     * then draw a bevel instead.
+	     */
+
+	    ix = _cairo_fixed_to_double (in->point.x);
+	    iy = _cairo_fixed_to_double (in->point.y);
+
+	    /* slope of one face */
+	    fdx1 = x1 - ix; fdy1 = y1 - iy;
+
+	    /* slope of the other face */
+	    fdx2 = x2 - ix; fdy2 = y2 - iy;
+
+	    /* slope from the intersection to the miter point */
+	    mdx = mx - ix; mdy = my - iy;
+
+	    /*
+	     * Make sure the miter point line lies between the two
+	     * faces by comparing the slopes
+	     */
+	    if (slope_compare_sgn (fdx1, fdy1, mdx, mdy) !=
+		slope_compare_sgn (fdx2, fdy2, mdx, mdy))
+	    {
+		cairo_point_t p;
+
+		p.x = _cairo_fixed_from_double (mx);
+		p.y = _cairo_fixed_from_double (my);
+
+		*_cairo_contour_last_point (&outer->contour) = p;
+		return;
+	    }
+	}
+	break;
+    }
+
+    case CAIRO_LINE_JOIN_BEVEL:
+	break;
+    }
+    contour_add_point (stroker,outer, outpt);
+}
+
+static void
+add_cap (struct stroker *stroker,
+	 const cairo_stroke_face_t *f,
+	 struct stroke_contour *c)
+{
+    switch (stroker->style.line_cap) {
+    case CAIRO_LINE_CAP_ROUND: {
+	cairo_slope_t slope;
+
+	slope.dx = -f->dev_vector.dx;
+	slope.dy = -f->dev_vector.dy;
+
+	add_fan (stroker, &f->dev_vector, &slope, &f->point, FALSE, c);
+	break;
+    }
+
+    case CAIRO_LINE_CAP_SQUARE: {
+	cairo_slope_t fvector;
+	cairo_point_t p;
+	double dx, dy;
+
+	dx = f->usr_vector.x;
+	dy = f->usr_vector.y;
+	dx *= stroker->half_line_width;
+	dy *= stroker->half_line_width;
+	cairo_matrix_transform_distance (stroker->ctm, &dx, &dy);
+	fvector.dx = _cairo_fixed_from_double (dx);
+	fvector.dy = _cairo_fixed_from_double (dy);
+
+	p.x = f->ccw.x + fvector.dx;
+	p.y = f->ccw.y + fvector.dy;
+	contour_add_point (stroker, c, &p);
+
+	p.x = f->cw.x + fvector.dx;
+	p.y = f->cw.y + fvector.dy;
+	contour_add_point (stroker, c, &p);
+    }
+
+    case CAIRO_LINE_CAP_BUTT:
+    default:
+	break;
+    }
+    contour_add_point (stroker, c, &f->cw);
+}
+
+static void
+add_leading_cap (struct stroker *stroker,
+		 const cairo_stroke_face_t *face,
+		 struct stroke_contour *c)
+{
+    cairo_stroke_face_t reversed;
+    cairo_point_t t;
+
+    reversed = *face;
+
+    /* The initial cap needs an outward facing vector. Reverse everything */
+    reversed.usr_vector.x = -reversed.usr_vector.x;
+    reversed.usr_vector.y = -reversed.usr_vector.y;
+    reversed.dev_vector.dx = -reversed.dev_vector.dx;
+    reversed.dev_vector.dy = -reversed.dev_vector.dy;
+
+    t = reversed.cw;
+    reversed.cw = reversed.ccw;
+    reversed.ccw = t;
+
+    add_cap (stroker, &reversed, c);
+}
+
+static void
+add_trailing_cap (struct stroker *stroker,
+		  const cairo_stroke_face_t *face,
+		  struct stroke_contour *c)
+{
+    add_cap (stroker, face, c);
+}
+
+static inline double
+normalize_slope (double *dx, double *dy)
+{
+    double dx0 = *dx, dy0 = *dy;
+    double mag;
+
+    assert (dx0 != 0.0 || dy0 != 0.0);
+
+    if (dx0 == 0.0) {
+	*dx = 0.0;
+	if (dy0 > 0.0) {
+	    mag = dy0;
+	    *dy = 1.0;
+	} else {
+	    mag = -dy0;
+	    *dy = -1.0;
+	}
+    } else if (dy0 == 0.0) {
+	*dy = 0.0;
+	if (dx0 > 0.0) {
+	    mag = dx0;
+	    *dx = 1.0;
+	} else {
+	    mag = -dx0;
+	    *dx = -1.0;
+	}
+    } else {
+	mag = hypot (dx0, dy0);
+	*dx = dx0 / mag;
+	*dy = dy0 / mag;
+    }
+
+    return mag;
+}
+
+static void
+compute_face (const cairo_point_t *point,
+	      const cairo_slope_t *dev_slope,
+	      struct stroker *stroker,
+	      cairo_stroke_face_t *face)
+{
+    double face_dx, face_dy;
+    cairo_point_t offset_ccw, offset_cw;
+    double slope_dx, slope_dy;
+
+    slope_dx = _cairo_fixed_to_double (dev_slope->dx);
+    slope_dy = _cairo_fixed_to_double (dev_slope->dy);
+    face->length = normalize_slope (&slope_dx, &slope_dy);
+    face->dev_slope.x = slope_dx;
+    face->dev_slope.y = slope_dy;
+
+    /*
+     * rotate to get a line_width/2 vector along the face, note that
+     * the vector must be rotated the right direction in device space,
+     * but by 90° in user space. So, the rotation depends on
+     * whether the ctm reflects or not, and that can be determined
+     * by looking at the determinant of the matrix.
+     */
+    if (! _cairo_matrix_is_identity (stroker->ctm_inverse)) {
+	/* Normalize the matrix! */
+	cairo_matrix_transform_distance (stroker->ctm_inverse,
+					 &slope_dx, &slope_dy);
+	normalize_slope (&slope_dx, &slope_dy);
+
+	if (stroker->ctm_det_positive) {
+	    face_dx = - slope_dy * stroker->half_line_width;
+	    face_dy = slope_dx * stroker->half_line_width;
+	} else {
+	    face_dx = slope_dy * stroker->half_line_width;
+	    face_dy = - slope_dx * stroker->half_line_width;
+	}
+
+	/* back to device space */
+	cairo_matrix_transform_distance (stroker->ctm, &face_dx, &face_dy);
+    } else {
+	face_dx = - slope_dy * stroker->half_line_width;
+	face_dy = slope_dx * stroker->half_line_width;
+    }
+
+    offset_ccw.x = _cairo_fixed_from_double (face_dx);
+    offset_ccw.y = _cairo_fixed_from_double (face_dy);
+    offset_cw.x = -offset_ccw.x;
+    offset_cw.y = -offset_ccw.y;
+
+    face->ccw = *point;
+    translate_point (&face->ccw, &offset_ccw);
+
+    face->point = *point;
+
+    face->cw = *point;
+    translate_point (&face->cw, &offset_cw);
+
+    face->usr_vector.x = slope_dx;
+    face->usr_vector.y = slope_dy;
+
+    face->dev_vector = *dev_slope;
+}
+
+static void
+add_caps (struct stroker *stroker)
+{
+    /* check for a degenerative sub_path */
+    if (stroker->has_initial_sub_path &&
+	! stroker->has_first_face &&
+	! stroker->has_current_face &&
+	stroker->style.line_cap == CAIRO_LINE_CAP_ROUND)
+    {
+	/* pick an arbitrary slope to use */
+	cairo_slope_t slope = { CAIRO_FIXED_ONE, 0 };
+	cairo_stroke_face_t face;
+
+	/* arbitrarily choose first_point */
+	compute_face (&stroker->first_point, &slope, stroker, &face);
+
+	add_leading_cap (stroker, &face, &stroker->ccw);
+	add_trailing_cap (stroker, &face, &stroker->ccw);
+
+	/* ensure the circle is complete */
+	_cairo_contour_add_point (&stroker->ccw.contour,
+				  _cairo_contour_first_point (&stroker->ccw.contour));
+
+	_cairo_polygon_add_contour (stroker->polygon, &stroker->ccw.contour);
+	_cairo_contour_reset (&stroker->ccw.contour);
+    } else {
+	if (stroker->has_current_face)
+	    add_trailing_cap (stroker, &stroker->current_face, &stroker->ccw);
+
+#if DEBUG
+	{
+	    FILE *file = fopen ("contours.txt", "a");
+	    _cairo_debug_print_contour (file, &stroker->path);
+	    _cairo_debug_print_contour (file, &stroker->cw.contour);
+	    _cairo_debug_print_contour (file, &stroker->ccw.contour);
+	    fclose (file);
+	    _cairo_contour_reset (&stroker->path);
+	}
+#endif
+
+	_cairo_polygon_add_contour (stroker->polygon, &stroker->ccw.contour);
+	_cairo_contour_reset (&stroker->ccw.contour);
+
+	if (stroker->has_first_face) {
+	    _cairo_contour_add_point (&stroker->ccw.contour,
+				      &stroker->first_face.cw);
+	    add_leading_cap (stroker, &stroker->first_face, &stroker->ccw);
+#if DEBUG
+	    {
+		FILE *file = fopen ("contours.txt", "a");
+		_cairo_debug_print_contour (file, &stroker->ccw.contour);
+		fclose (file);
+	    }
+#endif
+
+	    _cairo_polygon_add_contour (stroker->polygon,
+					&stroker->ccw.contour);
+	    _cairo_contour_reset (&stroker->ccw.contour);
+	}
+
+	_cairo_polygon_add_contour (stroker->polygon, &stroker->cw.contour);
+	_cairo_contour_reset (&stroker->cw.contour);
+    }
+}
+
+static cairo_status_t
+close_path (void *closure);
+
+static cairo_status_t
+move_to (void *closure,
+	 const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+
+    /* Cap the start and end of the previous sub path as needed */
+    add_caps (stroker);
+
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+    stroker->has_initial_sub_path = FALSE;
+
+    stroker->first_point = *point;
+
+#if DEBUG
+    _cairo_contour_add_point (&stroker->path, point);
+#endif
+
+    stroker->current_face.point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+line_to (void *closure,
+	 const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+    cairo_stroke_face_t start;
+    cairo_point_t *p1 = &stroker->current_face.point;
+    cairo_slope_t dev_slope;
+
+    stroker->has_initial_sub_path = TRUE;
+
+    if (p1->x == point->x && p1->y == point->y)
+	return CAIRO_STATUS_SUCCESS;
+
+#if DEBUG
+    _cairo_contour_add_point (&stroker->path, point);
+#endif
+
+    _cairo_slope_init (&dev_slope, p1, point);
+    compute_face (p1, &dev_slope, stroker, &start);
+
+    if (stroker->has_current_face) {
+	int clockwise = _cairo_slope_compare (&stroker->current_face.dev_vector,
+					      &start.dev_vector);
+	if (clockwise) {
+	    clockwise = clockwise < 0;
+	    /* Join with final face from previous segment */
+	    if (! within_tolerance (&stroker->current_face.ccw, &start.ccw,
+				    stroker->contour_tolerance) ||
+		! within_tolerance (&stroker->current_face.cw, &start.cw,
+				    stroker->contour_tolerance))
+	    {
+		outer_join (stroker, &stroker->current_face, &start, clockwise);
+		inner_join (stroker, &stroker->current_face, &start, clockwise);
+	    }
+	}
+    } else {
+	if (! stroker->has_first_face) {
+	    /* Save sub path's first face in case needed for closing join */
+	    stroker->first_face = start;
+	    stroker->has_first_face = TRUE;
+	}
+	stroker->has_current_face = TRUE;
+
+	contour_add_point (stroker, &stroker->cw, &start.cw);
+	contour_add_point (stroker, &stroker->ccw, &start.ccw);
+    }
+
+    stroker->current_face = start;
+    stroker->current_face.point = *point;
+    stroker->current_face.ccw.x += dev_slope.dx;
+    stroker->current_face.ccw.y += dev_slope.dy;
+    stroker->current_face.cw.x += dev_slope.dx;
+    stroker->current_face.cw.y += dev_slope.dy;
+
+    contour_add_point (stroker, &stroker->cw, &stroker->current_face.cw);
+    contour_add_point (stroker, &stroker->ccw, &stroker->current_face.ccw);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+spline_to (void *closure,
+	   const cairo_point_t *point,
+	   const cairo_slope_t *tangent)
+{
+    struct stroker *stroker = closure;
+    cairo_stroke_face_t face;
+
+#if DEBUG
+    _cairo_contour_add_point (&stroker->path, point);
+#endif
+    if ((tangent->dx | tangent->dy) == 0) {
+	struct stroke_contour *outer;
+	cairo_point_t t;
+	int clockwise;
+
+	face = stroker->current_face;
+
+	face.usr_vector.x = -face.usr_vector.x;
+	face.usr_vector.y = -face.usr_vector.y;
+	face.dev_vector.dx = -face.dev_vector.dx;
+	face.dev_vector.dy = -face.dev_vector.dy;
+
+	t = face.cw;
+	face.cw = face.ccw;
+	face.ccw = t;
+
+	clockwise = join_is_clockwise (&stroker->current_face, &face);
+	if (clockwise) {
+	    outer = &stroker->cw;
+	} else {
+	    outer = &stroker->ccw;
+	}
+
+	add_fan (stroker,
+		 &stroker->current_face.dev_vector,
+		 &face.dev_vector,
+		 &stroker->current_face.point,
+		 clockwise, outer);
+    } else {
+	compute_face (point, tangent, stroker, &face);
+
+	if ((face.dev_slope.x * stroker->current_face.dev_slope.x +
+	     face.dev_slope.y * stroker->current_face.dev_slope.y) < stroker->spline_cusp_tolerance)
+	{
+	    struct stroke_contour *outer;
+	    int clockwise = join_is_clockwise (&stroker->current_face, &face);
+
+	    stroker->current_face.cw.x += face.point.x - stroker->current_face.point.x;
+	    stroker->current_face.cw.y += face.point.y - stroker->current_face.point.y;
+	    contour_add_point (stroker, &stroker->cw, &stroker->current_face.cw);
+
+	    stroker->current_face.ccw.x += face.point.x - stroker->current_face.point.x;
+	    stroker->current_face.ccw.y += face.point.y - stroker->current_face.point.y;
+	    contour_add_point (stroker, &stroker->ccw, &stroker->current_face.ccw);
+
+	    if (clockwise) {
+		outer = &stroker->cw;
+	    } else {
+		outer = &stroker->ccw;
+	    }
+	    add_fan (stroker,
+		     &stroker->current_face.dev_vector,
+		     &face.dev_vector,
+		     &stroker->current_face.point,
+		     clockwise, outer);
+	}
+
+	contour_add_point (stroker, &stroker->cw, &face.cw);
+	contour_add_point (stroker, &stroker->ccw, &face.ccw);
+    }
+
+    stroker->current_face = face;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+curve_to (void *closure,
+	  const cairo_point_t *b,
+	  const cairo_point_t *c,
+	  const cairo_point_t *d)
+{
+    struct stroker *stroker = closure;
+    cairo_spline_t spline;
+    cairo_stroke_face_t face;
+
+    if (stroker->has_bounds &&
+	! _cairo_spline_intersects (&stroker->current_face.point, b, c, d,
+				    &stroker->bounds))
+	return line_to (closure, d);
+
+    if (! _cairo_spline_init (&spline, spline_to, stroker,
+			      &stroker->current_face.point, b, c, d))
+	return line_to (closure, d);
+
+    compute_face (&stroker->current_face.point, &spline.initial_slope,
+		  stroker, &face);
+
+    if (stroker->has_current_face) {
+	int clockwise = join_is_clockwise (&stroker->current_face, &face);
+	/* Join with final face from previous segment */
+	outer_join (stroker, &stroker->current_face, &face, clockwise);
+	inner_join (stroker, &stroker->current_face, &face, clockwise);
+    } else {
+	if (! stroker->has_first_face) {
+	    /* Save sub path's first face in case needed for closing join */
+	    stroker->first_face = face;
+	    stroker->has_first_face = TRUE;
+	}
+	stroker->has_current_face = TRUE;
+
+	contour_add_point (stroker, &stroker->cw, &face.cw);
+	contour_add_point (stroker, &stroker->ccw, &face.ccw);
+    }
+    stroker->current_face = face;
+
+    return _cairo_spline_decompose (&spline, stroker->tolerance);
+}
+
+static cairo_status_t
+close_path (void *closure)
+{
+    struct stroker *stroker = closure;
+    cairo_status_t status;
+
+    status = line_to (stroker, &stroker->first_point);
+    if (unlikely (status))
+	return status;
+
+    if (stroker->has_first_face && stroker->has_current_face) {
+	/* Join first and final faces of sub path */
+	outer_close (stroker, &stroker->current_face, &stroker->first_face);
+	inner_close (stroker, &stroker->current_face, &stroker->first_face);
+#if 0
+	*_cairo_contour_first_point (&stroker->ccw.contour) =
+	    *_cairo_contour_last_point (&stroker->ccw.contour);
+
+	*_cairo_contour_first_point (&stroker->cw.contour) =
+	    *_cairo_contour_last_point (&stroker->cw.contour);
+#endif
+
+	_cairo_polygon_add_contour (stroker->polygon, &stroker->cw.contour);
+	_cairo_polygon_add_contour (stroker->polygon, &stroker->ccw.contour);
+
+#if DEBUG
+	{
+	    FILE *file = fopen ("contours.txt", "a");
+	    _cairo_debug_print_contour (file, &stroker->path);
+	    _cairo_debug_print_contour (file, &stroker->cw.contour);
+	    _cairo_debug_print_contour (file, &stroker->ccw.contour);
+	    fclose (file);
+
+	    _cairo_contour_reset (&stroker->path);
+	}
+#endif
+	_cairo_contour_reset (&stroker->cw.contour);
+	_cairo_contour_reset (&stroker->ccw.contour);
+    } else {
+	/* Cap the start and end of the sub path as needed */
+	add_caps (stroker);
+    }
+
+    stroker->has_initial_sub_path = FALSE;
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_path_fixed_stroke_to_polygon (const cairo_path_fixed_t	*path,
+				     const cairo_stroke_style_t	*style,
+				     const cairo_matrix_t	*ctm,
+				     const cairo_matrix_t	*ctm_inverse,
+				     double		 tolerance,
+				     cairo_polygon_t *polygon)
+{
+    struct stroker stroker;
+    cairo_status_t status;
+
+    if (style->num_dashes) {
+	return _cairo_path_fixed_stroke_dashed_to_polygon (path,
+							   style,
+							   ctm,
+							   ctm_inverse,
+							   tolerance,
+							   polygon);
+    }
+
+    stroker.has_bounds = polygon->num_limits;
+    if (stroker.has_bounds) {
+	/* Extend the bounds in each direction to account for the maximum area
+	 * we might generate trapezoids, to capture line segments that are
+	 * outside of the bounds but which might generate rendering that's
+	 * within bounds.
+	 */
+	double dx, dy;
+	cairo_fixed_t fdx, fdy;
+	int i;
+
+	stroker.bounds = polygon->limits[0];
+	for (i = 1; i < polygon->num_limits; i++)
+	     _cairo_box_add_box (&stroker.bounds, &polygon->limits[i]);
+
+	_cairo_stroke_style_max_distance_from_path (style, path, ctm, &dx, &dy);
+	fdx = _cairo_fixed_from_double (dx);
+	fdy = _cairo_fixed_from_double (dy);
+
+	stroker.bounds.p1.x -= fdx;
+	stroker.bounds.p2.x += fdx;
+	stroker.bounds.p1.y -= fdy;
+	stroker.bounds.p2.y += fdy;
+    }
+
+    stroker.style = *style;
+    stroker.ctm = ctm;
+    stroker.ctm_inverse = ctm_inverse;
+    stroker.tolerance = tolerance;
+    stroker.half_line_width = style->line_width / 2.;
+    /* To test whether we need to join two segments of a spline using
+     * a round-join or a bevel-join, we can inspect the angle between the
+     * two segments. If the difference between the chord distance
+     * (half-line-width times the cosine of the bisection angle) and the
+     * half-line-width itself is greater than tolerance then we need to
+     * inject a point.
+     */
+    stroker.spline_cusp_tolerance = 1 - tolerance / stroker.half_line_width;
+    stroker.spline_cusp_tolerance *= stroker.spline_cusp_tolerance;
+    stroker.spline_cusp_tolerance *= 2;
+    stroker.spline_cusp_tolerance -= 1;
+    stroker.ctm_det_positive =
+	_cairo_matrix_compute_determinant (ctm) >= 0.0;
+
+    stroker.pen.num_vertices = 0;
+    if (path->has_curve_to ||
+	style->line_join == CAIRO_LINE_JOIN_ROUND ||
+	style->line_cap == CAIRO_LINE_CAP_ROUND) {
+	status = _cairo_pen_init (&stroker.pen,
+				  stroker.half_line_width,
+				  tolerance, ctm);
+	if (unlikely (status))
+	    return status;
+
+	/* If the line width is so small that the pen is reduced to a
+	   single point, then we have nothing to do. */
+	if (stroker.pen.num_vertices <= 1)
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    stroker.has_current_face = FALSE;
+    stroker.has_first_face = FALSE;
+    stroker.has_initial_sub_path = FALSE;
+
+#if DEBUG
+    remove ("contours.txt");
+    remove ("polygons.txt");
+    _cairo_contour_init (&stroker.path, 0);
+#endif
+    _cairo_contour_init (&stroker.cw.contour, 1);
+    _cairo_contour_init (&stroker.ccw.contour, -1);
+    tolerance *= CAIRO_FIXED_ONE;
+    tolerance *= tolerance;
+    stroker.contour_tolerance = tolerance;
+    stroker.polygon = polygon;
+
+    status = _cairo_path_fixed_interpret (path,
+					  move_to,
+					  line_to,
+					  curve_to,
+					  close_path,
+					  &stroker);
+    /* Cap the start and end of the final sub path as needed */
+    if (likely (status == CAIRO_STATUS_SUCCESS))
+	add_caps (&stroker);
+
+    _cairo_contour_fini (&stroker.cw.contour);
+    _cairo_contour_fini (&stroker.ccw.contour);
+    if (stroker.pen.num_vertices)
+	_cairo_pen_fini (&stroker.pen);
+
+#if DEBUG
+    {
+	FILE *file = fopen ("polygons.txt", "a");
+	_cairo_debug_print_polygon (file, polygon);
+	fclose (file);
+    }
+#endif
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-stroke-traps.c b/libs/cairo-1.16.0/src/cairo-path-stroke-traps.c
new file mode 100644
index 0000000..da54e5a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-stroke-traps.c
@@ -0,0 +1,1149 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2013 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-slope-private.h"
+#include "cairo-stroke-dash-private.h"
+#include "cairo-traps-private.h"
+
+#include <float.h>
+
+struct stroker {
+    const cairo_stroke_style_t	*style;
+
+    const cairo_matrix_t *ctm;
+    const cairo_matrix_t *ctm_inverse;
+    double spline_cusp_tolerance;
+    double half_line_width;
+    double tolerance;
+    double ctm_determinant;
+    cairo_bool_t ctm_det_positive;
+    cairo_line_join_t line_join;
+
+    cairo_traps_t *traps;
+
+    cairo_pen_t pen;
+
+    cairo_point_t first_point;
+
+    cairo_bool_t has_initial_sub_path;
+
+    cairo_bool_t has_current_face;
+    cairo_stroke_face_t current_face;
+
+    cairo_bool_t has_first_face;
+    cairo_stroke_face_t first_face;
+
+    cairo_stroker_dash_t dash;
+
+    cairo_bool_t has_bounds;
+    cairo_box_t tight_bounds;
+    cairo_box_t line_bounds;
+    cairo_box_t join_bounds;
+};
+
+static cairo_status_t
+stroker_init (struct stroker		*stroker,
+	      const cairo_path_fixed_t	*path,
+	      const cairo_stroke_style_t	*style,
+	      const cairo_matrix_t	*ctm,
+	      const cairo_matrix_t	*ctm_inverse,
+	      double			 tolerance,
+	      cairo_traps_t		*traps)
+{
+    cairo_status_t status;
+
+    stroker->style = style;
+    stroker->ctm = ctm;
+    stroker->ctm_inverse = NULL;
+    if (! _cairo_matrix_is_identity (ctm_inverse))
+	stroker->ctm_inverse = ctm_inverse;
+    stroker->line_join = style->line_join;
+    stroker->half_line_width = style->line_width / 2.0;
+    stroker->tolerance = tolerance;
+    stroker->traps = traps;
+
+    /* To test whether we need to join two segments of a spline using
+     * a round-join or a bevel-join, we can inspect the angle between the
+     * two segments. If the difference between the chord distance
+     * (half-line-width times the cosine of the bisection angle) and the
+     * half-line-width itself is greater than tolerance then we need to
+     * inject a point.
+     */
+    stroker->spline_cusp_tolerance = 1 - tolerance / stroker->half_line_width;
+    stroker->spline_cusp_tolerance *= stroker->spline_cusp_tolerance;
+    stroker->spline_cusp_tolerance *= 2;
+    stroker->spline_cusp_tolerance -= 1;
+
+    stroker->ctm_determinant = _cairo_matrix_compute_determinant (stroker->ctm);
+    stroker->ctm_det_positive = stroker->ctm_determinant >= 0.0;
+
+    status = _cairo_pen_init (&stroker->pen,
+		              stroker->half_line_width,
+			      tolerance, ctm);
+    if (unlikely (status))
+	return status;
+
+    stroker->has_current_face = FALSE;
+    stroker->has_first_face = FALSE;
+    stroker->has_initial_sub_path = FALSE;
+
+    _cairo_stroker_dash_init (&stroker->dash, style);
+
+    stroker->has_bounds = traps->num_limits;
+    if (stroker->has_bounds) {
+	/* Extend the bounds in each direction to account for the maximum area
+	 * we might generate trapezoids, to capture line segments that are outside
+	 * of the bounds but which might generate rendering that's within bounds.
+	 */
+	double dx, dy;
+	cairo_fixed_t fdx, fdy;
+
+	stroker->tight_bounds = traps->bounds;
+
+	_cairo_stroke_style_max_distance_from_path (stroker->style, path,
+						    stroker->ctm, &dx, &dy);
+
+	_cairo_stroke_style_max_line_distance_from_path (stroker->style, path,
+							 stroker->ctm, &dx, &dy);
+
+	fdx = _cairo_fixed_from_double (dx);
+	fdy = _cairo_fixed_from_double (dy);
+
+	stroker->line_bounds = stroker->tight_bounds;
+	stroker->line_bounds.p1.x -= fdx;
+	stroker->line_bounds.p2.x += fdx;
+	stroker->line_bounds.p1.y -= fdy;
+	stroker->line_bounds.p2.y += fdy;
+
+	_cairo_stroke_style_max_join_distance_from_path (stroker->style, path,
+							 stroker->ctm, &dx, &dy);
+
+	fdx = _cairo_fixed_from_double (dx);
+	fdy = _cairo_fixed_from_double (dy);
+
+	stroker->join_bounds = stroker->tight_bounds;
+	stroker->join_bounds.p1.x -= fdx;
+	stroker->join_bounds.p2.x += fdx;
+	stroker->join_bounds.p1.y -= fdy;
+	stroker->join_bounds.p2.y += fdy;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+stroker_fini (struct stroker *stroker)
+{
+    _cairo_pen_fini (&stroker->pen);
+}
+
+static void
+translate_point (cairo_point_t *point, cairo_point_t *offset)
+{
+    point->x += offset->x;
+    point->y += offset->y;
+}
+
+static int
+join_is_clockwise (const cairo_stroke_face_t *in,
+		   const cairo_stroke_face_t *out)
+{
+    return _cairo_slope_compare (&in->dev_vector, &out->dev_vector) < 0;
+}
+
+static int
+slope_compare_sgn (double dx1, double dy1, double dx2, double dy2)
+{
+    double c = dx1 * dy2 - dx2 * dy1;
+    if (c > 0) return 1;
+    if (c < 0) return -1;
+    return 0;
+}
+
+static cairo_bool_t
+stroker_intersects_join (const struct stroker *stroker,
+			 const cairo_point_t *in,
+			 const cairo_point_t *out)
+{
+    cairo_line_t segment;
+
+    if (! stroker->has_bounds)
+	return TRUE;
+
+    segment.p1 = *in;
+    segment.p2 = *out;
+    return _cairo_box_intersects_line_segment (&stroker->join_bounds, &segment);
+}
+
+static void
+join (struct stroker *stroker,
+      cairo_stroke_face_t *in,
+      cairo_stroke_face_t *out)
+{
+    int clockwise = join_is_clockwise (out, in);
+    cairo_point_t *inpt, *outpt;
+
+    if (in->cw.x == out->cw.x &&
+	in->cw.y == out->cw.y &&
+	in->ccw.x == out->ccw.x &&
+	in->ccw.y == out->ccw.y)
+    {
+	return;
+    }
+
+    if (clockwise) {
+	inpt = &in->ccw;
+	outpt = &out->ccw;
+    } else {
+	inpt = &in->cw;
+	outpt = &out->cw;
+    }
+
+    if (! stroker_intersects_join (stroker, inpt, outpt))
+	    return;
+
+    switch (stroker->line_join) {
+    case CAIRO_LINE_JOIN_ROUND:
+	/* construct a fan around the common midpoint */
+	if ((in->dev_slope.x * out->dev_slope.x +
+	     in->dev_slope.y * out->dev_slope.y) < stroker->spline_cusp_tolerance)
+	{
+	    int start, stop;
+	    cairo_point_t tri[3], edges[4];
+	    cairo_pen_t *pen = &stroker->pen;
+
+	    edges[0] = in->cw;
+	    edges[1] = in->ccw;
+	    tri[0] = in->point;
+	    tri[1] = *inpt;
+	    if (clockwise) {
+		_cairo_pen_find_active_ccw_vertices (pen,
+						     &in->dev_vector, &out->dev_vector,
+						     &start, &stop);
+		while (start != stop) {
+		    tri[2] = in->point;
+		    translate_point (&tri[2], &pen->vertices[start].point);
+		    edges[2] = in->point;
+		    edges[3] = tri[2];
+		    _cairo_traps_tessellate_triangle_with_edges (stroker->traps,
+								 tri, edges);
+		    tri[1] = tri[2];
+		    edges[0] = edges[2];
+		    edges[1] = edges[3];
+
+		    if (start-- == 0)
+			start += pen->num_vertices;
+		}
+	    } else {
+		_cairo_pen_find_active_cw_vertices (pen,
+						    &in->dev_vector, &out->dev_vector,
+						    &start, &stop);
+		while (start != stop) {
+		    tri[2] = in->point;
+		    translate_point (&tri[2], &pen->vertices[start].point);
+		    edges[2] = in->point;
+		    edges[3] = tri[2];
+		    _cairo_traps_tessellate_triangle_with_edges (stroker->traps,
+								 tri, edges);
+		    tri[1] = tri[2];
+		    edges[0] = edges[2];
+		    edges[1] = edges[3];
+
+		    if (++start == pen->num_vertices)
+			start = 0;
+		}
+	    }
+	    tri[2] = *outpt;
+	    edges[2] = out->cw;
+	    edges[3] = out->ccw;
+	    _cairo_traps_tessellate_triangle_with_edges (stroker->traps,
+							 tri, edges);
+	} else {
+	    cairo_point_t t[] = { { in->point.x, in->point.y}, { inpt->x, inpt->y }, { outpt->x, outpt->y } };
+	    cairo_point_t e[] = { { in->cw.x, in->cw.y}, { in->ccw.x, in->ccw.y },
+				  { out->cw.x, out->cw.y}, { out->ccw.x, out->ccw.y } };
+	    _cairo_traps_tessellate_triangle_with_edges (stroker->traps, t, e);
+	}
+	break;
+
+    case CAIRO_LINE_JOIN_MITER:
+    default: {
+	/* dot product of incoming slope vector with outgoing slope vector */
+	double in_dot_out = (-in->usr_vector.x * out->usr_vector.x +
+			     -in->usr_vector.y * out->usr_vector.y);
+	double ml = stroker->style->miter_limit;
+
+	/* Check the miter limit -- lines meeting at an acute angle
+	 * can generate long miters, the limit converts them to bevel
+	 *
+	 * Consider the miter join formed when two line segments
+	 * meet at an angle psi:
+	 *
+	 *	   /.\
+	 *	  /. .\
+	 *	 /./ \.\
+	 *	/./psi\.\
+	 *
+	 * We can zoom in on the right half of that to see:
+	 *
+	 *	    |\
+	 *	    | \ psi/2
+	 *	    |  \
+	 *	    |   \
+	 *	    |    \
+	 *	    |     \
+	 *	  miter    \
+	 *	 length     \
+	 *	    |        \
+	 *	    |        .\
+	 *	    |    .     \
+	 *	    |.   line   \
+	 *	     \    width  \
+	 *	      \           \
+	 *
+	 *
+	 * The right triangle in that figure, (the line-width side is
+	 * shown faintly with three '.' characters), gives us the
+	 * following expression relating miter length, angle and line
+	 * width:
+	 *
+	 *	1 /sin (psi/2) = miter_length / line_width
+	 *
+	 * The right-hand side of this relationship is the same ratio
+	 * in which the miter limit (ml) is expressed. We want to know
+	 * when the miter length is within the miter limit. That is
+	 * when the following condition holds:
+	 *
+	 *	1/sin(psi/2) <= ml
+	 *	1 <= ml sin(psi/2)
+	 *	1 <= ml² sin²(psi/2)
+	 *	2 <= ml² 2 sin²(psi/2)
+	 *				2·sin²(psi/2) = 1-cos(psi)
+	 *	2 <= ml² (1-cos(psi))
+	 *
+	 *				in · out = |in| |out| cos (psi)
+	 *
+	 * in and out are both unit vectors, so:
+	 *
+	 *				in · out = cos (psi)
+	 *
+	 *	2 <= ml² (1 - in · out)
+	 *
+	 */
+	if (2 <= ml * ml * (1 - in_dot_out)) {
+	    double		x1, y1, x2, y2;
+	    double		mx, my;
+	    double		dx1, dx2, dy1, dy2;
+	    cairo_point_t	outer;
+	    cairo_point_t	quad[4];
+	    double		ix, iy;
+	    double		fdx1, fdy1, fdx2, fdy2;
+	    double		mdx, mdy;
+
+	    /*
+	     * we've got the points already transformed to device
+	     * space, but need to do some computation with them and
+	     * also need to transform the slope from user space to
+	     * device space
+	     */
+	    /* outer point of incoming line face */
+	    x1 = _cairo_fixed_to_double (inpt->x);
+	    y1 = _cairo_fixed_to_double (inpt->y);
+	    dx1 = in->usr_vector.x;
+	    dy1 = in->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx1, &dy1);
+
+	    /* outer point of outgoing line face */
+	    x2 = _cairo_fixed_to_double (outpt->x);
+	    y2 = _cairo_fixed_to_double (outpt->y);
+	    dx2 = out->usr_vector.x;
+	    dy2 = out->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx2, &dy2);
+
+	    /*
+	     * Compute the location of the outer corner of the miter.
+	     * That's pretty easy -- just the intersection of the two
+	     * outer edges.  We've got slopes and points on each
+	     * of those edges.  Compute my directly, then compute
+	     * mx by using the edge with the larger dy; that avoids
+	     * dividing by values close to zero.
+	     */
+	    my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) /
+		  (dx1 * dy2 - dx2 * dy1));
+	    if (fabs (dy1) >= fabs (dy2))
+		mx = (my - y1) * dx1 / dy1 + x1;
+	    else
+		mx = (my - y2) * dx2 / dy2 + x2;
+
+	    /*
+	     * When the two outer edges are nearly parallel, slight
+	     * perturbations in the position of the outer points of the lines
+	     * caused by representing them in fixed point form can cause the
+	     * intersection point of the miter to move a large amount. If
+	     * that moves the miter intersection from between the two faces,
+	     * then draw a bevel instead.
+	     */
+
+	    ix = _cairo_fixed_to_double (in->point.x);
+	    iy = _cairo_fixed_to_double (in->point.y);
+
+	    /* slope of one face */
+	    fdx1 = x1 - ix; fdy1 = y1 - iy;
+
+	    /* slope of the other face */
+	    fdx2 = x2 - ix; fdy2 = y2 - iy;
+
+	    /* slope from the intersection to the miter point */
+	    mdx = mx - ix; mdy = my - iy;
+
+	    /*
+	     * Make sure the miter point line lies between the two
+	     * faces by comparing the slopes
+	     */
+	    if (slope_compare_sgn (fdx1, fdy1, mdx, mdy) !=
+		slope_compare_sgn (fdx2, fdy2, mdx, mdy))
+	    {
+		/*
+		 * Draw the quadrilateral
+		 */
+		outer.x = _cairo_fixed_from_double (mx);
+		outer.y = _cairo_fixed_from_double (my);
+
+		quad[0] = in->point;
+		quad[1] = *inpt;
+		quad[2] = outer;
+		quad[3] = *outpt;
+
+		_cairo_traps_tessellate_convex_quad (stroker->traps, quad);
+		break;
+	    }
+	}
+	/* fall through ... */
+    }
+
+    case CAIRO_LINE_JOIN_BEVEL: {
+	cairo_point_t t[] = { { in->point.x, in->point.y }, { inpt->x, inpt->y }, { outpt->x, outpt->y } };
+	cairo_point_t e[] = { { in->cw.x, in->cw.y }, { in->ccw.x, in->ccw.y },
+			      { out->cw.x, out->cw.y }, { out->ccw.x, out->ccw.y } };
+	_cairo_traps_tessellate_triangle_with_edges (stroker->traps, t, e);
+	break;
+    }
+    }
+}
+
+static void
+add_cap (struct stroker *stroker, cairo_stroke_face_t *f)
+{
+    switch (stroker->style->line_cap) {
+    case CAIRO_LINE_CAP_ROUND: {
+	int start, stop;
+	cairo_slope_t in_slope, out_slope;
+	cairo_point_t tri[3], edges[4];
+	cairo_pen_t *pen = &stroker->pen;
+
+	in_slope = f->dev_vector;
+	out_slope.dx = -in_slope.dx;
+	out_slope.dy = -in_slope.dy;
+	_cairo_pen_find_active_cw_vertices (pen, &in_slope, &out_slope,
+					    &start, &stop);
+	edges[0] = f->cw;
+	edges[1] = f->ccw;
+	tri[0] = f->point;
+	tri[1] = f->cw;
+	while (start != stop) {
+	    tri[2] = f->point;
+	    translate_point (&tri[2], &pen->vertices[start].point);
+	    edges[2] = f->point;
+	    edges[3] = tri[2];
+	    _cairo_traps_tessellate_triangle_with_edges (stroker->traps,
+							 tri, edges);
+
+	    tri[1] = tri[2];
+	    edges[0] = edges[2];
+	    edges[1] = edges[3];
+	    if (++start == pen->num_vertices)
+		start = 0;
+	}
+	tri[2] = f->ccw;
+	edges[2] = f->cw;
+	edges[3] = f->ccw;
+	_cairo_traps_tessellate_triangle_with_edges (stroker->traps,
+						     tri, edges);
+	break;
+    }
+
+    case CAIRO_LINE_CAP_SQUARE: {
+	double dx, dy;
+	cairo_slope_t fvector;
+	cairo_point_t quad[4];
+
+	dx = f->usr_vector.x;
+	dy = f->usr_vector.y;
+	dx *= stroker->half_line_width;
+	dy *= stroker->half_line_width;
+	cairo_matrix_transform_distance (stroker->ctm, &dx, &dy);
+	fvector.dx = _cairo_fixed_from_double (dx);
+	fvector.dy = _cairo_fixed_from_double (dy);
+
+	quad[0] = f->cw;
+	quad[1].x = f->cw.x + fvector.dx;
+	quad[1].y = f->cw.y + fvector.dy;
+	quad[2].x = f->ccw.x + fvector.dx;
+	quad[2].y = f->ccw.y + fvector.dy;
+	quad[3] = f->ccw;
+
+	_cairo_traps_tessellate_convex_quad (stroker->traps, quad);
+	break;
+    }
+
+    case CAIRO_LINE_CAP_BUTT:
+    default:
+	break;
+    }
+}
+
+static void
+add_leading_cap (struct stroker     *stroker,
+		 cairo_stroke_face_t *face)
+{
+    cairo_stroke_face_t reversed;
+    cairo_point_t t;
+
+    reversed = *face;
+
+    /* The initial cap needs an outward facing vector. Reverse everything */
+    reversed.usr_vector.x = -reversed.usr_vector.x;
+    reversed.usr_vector.y = -reversed.usr_vector.y;
+    reversed.dev_vector.dx = -reversed.dev_vector.dx;
+    reversed.dev_vector.dy = -reversed.dev_vector.dy;
+    t = reversed.cw;
+    reversed.cw = reversed.ccw;
+    reversed.ccw = t;
+
+    add_cap (stroker, &reversed);
+}
+
+static void
+add_trailing_cap (struct stroker *stroker, cairo_stroke_face_t *face)
+{
+    add_cap (stroker, face);
+}
+
+static inline double
+normalize_slope (double *dx, double *dy)
+{
+    double dx0 = *dx, dy0 = *dy;
+
+    if (dx0 == 0.0 && dy0 == 0.0)
+	return 0;
+
+    if (dx0 == 0.0) {
+	*dx = 0.0;
+	if (dy0 > 0.0) {
+	    *dy = 1.0;
+	    return dy0;
+	} else {
+	    *dy = -1.0;
+	    return -dy0;
+	}
+    } else if (dy0 == 0.0) {
+	*dy = 0.0;
+	if (dx0 > 0.0) {
+	    *dx = 1.0;
+	    return dx0;
+	} else {
+	    *dx = -1.0;
+	    return -dx0;
+	}
+    } else {
+	double mag = hypot (dx0, dy0);
+	*dx = dx0 / mag;
+	*dy = dy0 / mag;
+	return mag;
+    }
+}
+
+static void
+compute_face (const cairo_point_t *point,
+	      const cairo_slope_t *dev_slope,
+	      struct stroker *stroker,
+	      cairo_stroke_face_t *face)
+{
+    double face_dx, face_dy;
+    cairo_point_t offset_ccw, offset_cw;
+    double slope_dx, slope_dy;
+
+    slope_dx = _cairo_fixed_to_double (dev_slope->dx);
+    slope_dy = _cairo_fixed_to_double (dev_slope->dy);
+    face->length = normalize_slope (&slope_dx, &slope_dy);
+    face->dev_slope.x = slope_dx;
+    face->dev_slope.y = slope_dy;
+
+    /*
+     * rotate to get a line_width/2 vector along the face, note that
+     * the vector must be rotated the right direction in device space,
+     * but by 90° in user space. So, the rotation depends on
+     * whether the ctm reflects or not, and that can be determined
+     * by looking at the determinant of the matrix.
+     */
+    if (stroker->ctm_inverse) {
+	cairo_matrix_transform_distance (stroker->ctm_inverse, &slope_dx, &slope_dy);
+	normalize_slope (&slope_dx, &slope_dy);
+
+	if (stroker->ctm_det_positive) {
+	    face_dx = - slope_dy * stroker->half_line_width;
+	    face_dy = slope_dx * stroker->half_line_width;
+	} else {
+	    face_dx = slope_dy * stroker->half_line_width;
+	    face_dy = - slope_dx * stroker->half_line_width;
+	}
+
+	/* back to device space */
+	cairo_matrix_transform_distance (stroker->ctm, &face_dx, &face_dy);
+    } else {
+	face_dx = - slope_dy * stroker->half_line_width;
+	face_dy = slope_dx * stroker->half_line_width;
+    }
+
+    offset_ccw.x = _cairo_fixed_from_double (face_dx);
+    offset_ccw.y = _cairo_fixed_from_double (face_dy);
+    offset_cw.x = -offset_ccw.x;
+    offset_cw.y = -offset_ccw.y;
+
+    face->ccw = *point;
+    translate_point (&face->ccw, &offset_ccw);
+
+    face->point = *point;
+
+    face->cw = *point;
+    translate_point (&face->cw, &offset_cw);
+
+    face->usr_vector.x = slope_dx;
+    face->usr_vector.y = slope_dy;
+
+    face->dev_vector = *dev_slope;
+}
+
+static void
+add_caps (struct stroker *stroker)
+{
+    /* check for a degenerative sub_path */
+    if (stroker->has_initial_sub_path &&
+	!stroker->has_first_face &&
+	!stroker->has_current_face &&
+	stroker->style->line_cap == CAIRO_LINE_CAP_ROUND)
+    {
+	/* pick an arbitrary slope to use */
+	cairo_slope_t slope = { CAIRO_FIXED_ONE, 0 };
+	cairo_stroke_face_t face;
+
+	/* arbitrarily choose first_point
+	 * first_point and current_point should be the same */
+	compute_face (&stroker->first_point, &slope, stroker, &face);
+
+	add_leading_cap (stroker, &face);
+	add_trailing_cap (stroker, &face);
+    }
+
+    if (stroker->has_first_face)
+	add_leading_cap (stroker, &stroker->first_face);
+
+    if (stroker->has_current_face)
+	add_trailing_cap (stroker, &stroker->current_face);
+}
+
+static cairo_bool_t
+stroker_intersects_edge (const struct stroker *stroker,
+			 const cairo_stroke_face_t *start,
+			 const cairo_stroke_face_t *end)
+{
+    cairo_box_t box;
+
+    if (! stroker->has_bounds)
+	return TRUE;
+
+    if (_cairo_box_contains_point (&stroker->tight_bounds, &start->cw))
+	return TRUE;
+    box.p2 = box.p1 = start->cw;
+
+    if (_cairo_box_contains_point (&stroker->tight_bounds, &start->ccw))
+	return TRUE;
+    _cairo_box_add_point (&box, &start->ccw);
+
+    if (_cairo_box_contains_point (&stroker->tight_bounds, &end->cw))
+	return TRUE;
+    _cairo_box_add_point (&box, &end->cw);
+
+    if (_cairo_box_contains_point (&stroker->tight_bounds, &end->ccw))
+	return TRUE;
+    _cairo_box_add_point (&box, &end->ccw);
+
+    return (box.p2.x > stroker->tight_bounds.p1.x &&
+	    box.p1.x < stroker->tight_bounds.p2.x &&
+	    box.p2.y > stroker->tight_bounds.p1.y &&
+	    box.p1.y < stroker->tight_bounds.p2.y);
+}
+
+static void
+add_sub_edge (struct stroker *stroker,
+	      const cairo_point_t *p1, const cairo_point_t *p2,
+	      const cairo_slope_t *dev_slope,
+	      cairo_stroke_face_t *start, cairo_stroke_face_t *end)
+{
+    cairo_point_t rectangle[4];
+
+    compute_face (p1, dev_slope, stroker, start);
+
+    *end = *start;
+    end->point = *p2;
+    rectangle[0].x = p2->x - p1->x;
+    rectangle[0].y = p2->y - p1->y;
+    translate_point (&end->ccw, &rectangle[0]);
+    translate_point (&end->cw, &rectangle[0]);
+
+    if (p1->x == p2->x && p1->y == p2->y)
+	return;
+
+    if (! stroker_intersects_edge (stroker, start, end))
+	return;
+
+    rectangle[0] = start->cw;
+    rectangle[1] = start->ccw;
+    rectangle[2] = end->ccw;
+    rectangle[3] = end->cw;
+
+    _cairo_traps_tessellate_convex_quad (stroker->traps, rectangle);
+}
+
+static cairo_status_t
+move_to (void *closure, const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+
+    /* Cap the start and end of the previous sub path as needed */
+    add_caps (stroker);
+
+    stroker->first_point = *point;
+    stroker->current_face.point = *point;
+
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+    stroker->has_initial_sub_path = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+move_to_dashed (void *closure, const cairo_point_t *point)
+{
+    /* reset the dash pattern for new sub paths */
+    struct stroker *stroker = closure;
+
+    _cairo_stroker_dash_start (&stroker->dash);
+    return move_to (closure, point);
+}
+
+static cairo_status_t
+line_to (void *closure, const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+    cairo_stroke_face_t start, end;
+    const cairo_point_t *p1 = &stroker->current_face.point;
+    const cairo_point_t *p2 = point;
+    cairo_slope_t dev_slope;
+
+    stroker->has_initial_sub_path = TRUE;
+
+    if (p1->x == p2->x && p1->y == p2->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_slope_init (&dev_slope, p1, p2);
+    add_sub_edge (stroker, p1, p2, &dev_slope, &start, &end);
+
+    if (stroker->has_current_face) {
+	/* Join with final face from previous segment */
+	join (stroker, &stroker->current_face, &start);
+    } else if (!stroker->has_first_face) {
+	/* Save sub path's first face in case needed for closing join */
+	stroker->first_face = start;
+	stroker->has_first_face = TRUE;
+    }
+    stroker->current_face = end;
+    stroker->has_current_face = TRUE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Dashed lines.  Cap each dash end, join around turns when on
+ */
+static cairo_status_t
+line_to_dashed (void *closure, const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+    double mag, remain, step_length = 0;
+    double slope_dx, slope_dy;
+    double dx2, dy2;
+    cairo_stroke_face_t sub_start, sub_end;
+    const cairo_point_t *p1 = &stroker->current_face.point;
+    const cairo_point_t *p2 = point;
+    cairo_slope_t dev_slope;
+    cairo_line_t segment;
+    cairo_bool_t fully_in_bounds;
+
+    stroker->has_initial_sub_path = stroker->dash.dash_starts_on;
+
+    if (p1->x == p2->x && p1->y == p2->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    fully_in_bounds = TRUE;
+    if (stroker->has_bounds &&
+	(! _cairo_box_contains_point (&stroker->join_bounds, p1) ||
+	 ! _cairo_box_contains_point (&stroker->join_bounds, p2)))
+    {
+	fully_in_bounds = FALSE;
+    }
+
+    _cairo_slope_init (&dev_slope, p1, p2);
+
+    slope_dx = _cairo_fixed_to_double (p2->x - p1->x);
+    slope_dy = _cairo_fixed_to_double (p2->y - p1->y);
+
+    if (stroker->ctm_inverse)
+	cairo_matrix_transform_distance (stroker->ctm_inverse, &slope_dx, &slope_dy);
+    mag = normalize_slope (&slope_dx, &slope_dy);
+    if (mag <= DBL_EPSILON)
+	return CAIRO_STATUS_SUCCESS;
+
+    remain = mag;
+    segment.p1 = *p1;
+    while (remain) {
+	step_length = MIN (stroker->dash.dash_remain, remain);
+	remain -= step_length;
+	dx2 = slope_dx * (mag - remain);
+	dy2 = slope_dy * (mag - remain);
+	cairo_matrix_transform_distance (stroker->ctm, &dx2, &dy2);
+	segment.p2.x = _cairo_fixed_from_double (dx2) + p1->x;
+	segment.p2.y = _cairo_fixed_from_double (dy2) + p1->y;
+
+	if (stroker->dash.dash_on &&
+	    (fully_in_bounds ||
+	     (! stroker->has_first_face && stroker->dash.dash_starts_on) ||
+	     _cairo_box_intersects_line_segment (&stroker->join_bounds, &segment)))
+	{
+	    add_sub_edge (stroker,
+			  &segment.p1, &segment.p2,
+			  &dev_slope,
+			  &sub_start, &sub_end);
+
+	    if (stroker->has_current_face) {
+		/* Join with final face from previous segment */
+		join (stroker, &stroker->current_face, &sub_start);
+
+		stroker->has_current_face = FALSE;
+	    } else if (! stroker->has_first_face && stroker->dash.dash_starts_on) {
+		/* Save sub path's first face in case needed for closing join */
+		stroker->first_face = sub_start;
+		stroker->has_first_face = TRUE;
+	    } else {
+		/* Cap dash start if not connecting to a previous segment */
+		add_leading_cap (stroker, &sub_start);
+	    }
+
+	    if (remain) {
+		/* Cap dash end if not at end of segment */
+		add_trailing_cap (stroker, &sub_end);
+	    } else {
+		stroker->current_face = sub_end;
+		stroker->has_current_face = TRUE;
+	    }
+	} else {
+	    if (stroker->has_current_face) {
+		/* Cap final face from previous segment */
+		add_trailing_cap (stroker, &stroker->current_face);
+
+		stroker->has_current_face = FALSE;
+	    }
+	}
+
+	_cairo_stroker_dash_step (&stroker->dash, step_length);
+	segment.p1 = segment.p2;
+    }
+
+    if (stroker->dash.dash_on && ! stroker->has_current_face) {
+	/* This segment ends on a transition to dash_on, compute a new face
+	 * and add cap for the beginning of the next dash_on step.
+	 *
+	 * Note: this will create a degenerate cap if this is not the last line
+	 * in the path. Whether this behaviour is desirable or not is debatable.
+	 * On one side these degenerate caps can not be reproduced with regular
+	 * path stroking.
+	 * On the other hand, Acroread 7 also produces the degenerate caps.
+	 */
+	compute_face (point, &dev_slope, stroker, &stroker->current_face);
+
+	add_leading_cap (stroker, &stroker->current_face);
+
+	stroker->has_current_face = TRUE;
+    } else
+	stroker->current_face.point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+spline_to (void *closure,
+	   const cairo_point_t *point,
+	   const cairo_slope_t *tangent)
+{
+    struct stroker *stroker = closure;
+    cairo_stroke_face_t face;
+
+    if ((tangent->dx | tangent->dy) == 0) {
+	cairo_point_t t;
+
+	face = stroker->current_face;
+
+	face.usr_vector.x = -face.usr_vector.x;
+	face.usr_vector.y = -face.usr_vector.y;
+	face.dev_slope.x = -face.dev_slope.x;
+	face.dev_slope.y = -face.dev_slope.y;
+	face.dev_vector.dx = -face.dev_vector.dx;
+	face.dev_vector.dy = -face.dev_vector.dy;
+
+	t = face.cw;
+	face.cw = face.ccw;
+	face.ccw = t;
+
+	join (stroker, &stroker->current_face, &face);
+    } else {
+	cairo_point_t rectangle[4];
+
+	compute_face (&stroker->current_face.point, tangent, stroker, &face);
+	join (stroker, &stroker->current_face, &face);
+
+	rectangle[0] = face.cw;
+	rectangle[1] = face.ccw;
+
+	rectangle[2].x = point->x - face.point.x;
+	rectangle[2].y = point->y - face.point.y;
+	face.point = *point;
+	translate_point (&face.ccw, &rectangle[2]);
+	translate_point (&face.cw, &rectangle[2]);
+
+	rectangle[2] = face.ccw;
+	rectangle[3] = face.cw;
+
+	_cairo_traps_tessellate_convex_quad (stroker->traps, rectangle);
+    }
+
+    stroker->current_face = face;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+curve_to (void *closure,
+	  const cairo_point_t *b,
+	  const cairo_point_t *c,
+	  const cairo_point_t *d)
+{
+    struct stroker *stroker = closure;
+    cairo_line_join_t line_join_save;
+    cairo_spline_t spline;
+    cairo_stroke_face_t face;
+    cairo_status_t status;
+
+    if (stroker->has_bounds &&
+	! _cairo_spline_intersects (&stroker->current_face.point, b, c, d,
+				    &stroker->line_bounds))
+	return line_to (closure, d);
+
+    if (! _cairo_spline_init (&spline, spline_to, stroker,
+			      &stroker->current_face.point, b, c, d))
+	return line_to (closure, d);
+
+    compute_face (&stroker->current_face.point, &spline.initial_slope,
+		  stroker, &face);
+
+    if (stroker->has_current_face) {
+	/* Join with final face from previous segment */
+	join (stroker, &stroker->current_face, &face);
+    } else {
+	if (! stroker->has_first_face) {
+	    /* Save sub path's first face in case needed for closing join */
+	    stroker->first_face = face;
+	    stroker->has_first_face = TRUE;
+	}
+	stroker->has_current_face = TRUE;
+    }
+    stroker->current_face = face;
+
+    /* Temporarily modify the stroker to use round joins to guarantee
+     * smooth stroked curves. */
+    line_join_save = stroker->line_join;
+    stroker->line_join = CAIRO_LINE_JOIN_ROUND;
+
+    status = _cairo_spline_decompose (&spline, stroker->tolerance);
+
+    stroker->line_join = line_join_save;
+
+    return status;
+}
+
+static cairo_status_t
+curve_to_dashed (void *closure,
+		 const cairo_point_t *b,
+		 const cairo_point_t *c,
+		 const cairo_point_t *d)
+{
+    struct stroker *stroker = closure;
+    cairo_spline_t spline;
+    cairo_line_join_t line_join_save;
+    cairo_spline_add_point_func_t func;
+    cairo_status_t status;
+
+    func = (cairo_spline_add_point_func_t)line_to_dashed;
+
+    if (stroker->has_bounds &&
+	! _cairo_spline_intersects (&stroker->current_face.point, b, c, d,
+				    &stroker->line_bounds))
+	return func (closure, d, NULL);
+
+    if (! _cairo_spline_init (&spline, func, stroker,
+			      &stroker->current_face.point, b, c, d))
+	return func (closure, d, NULL);
+
+    /* Temporarily modify the stroker to use round joins to guarantee
+     * smooth stroked curves. */
+    line_join_save = stroker->line_join;
+    stroker->line_join = CAIRO_LINE_JOIN_ROUND;
+
+    status = _cairo_spline_decompose (&spline, stroker->tolerance);
+
+    stroker->line_join = line_join_save;
+
+    return status;
+}
+
+static cairo_status_t
+_close_path (struct stroker *stroker)
+{
+    if (stroker->has_first_face && stroker->has_current_face) {
+	/* Join first and final faces of sub path */
+	join (stroker, &stroker->current_face, &stroker->first_face);
+    } else {
+	/* Cap the start and end of the sub path as needed */
+	add_caps (stroker);
+    }
+
+    stroker->has_initial_sub_path = FALSE;
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+close_path (void *closure)
+{
+    struct stroker *stroker = closure;
+    cairo_status_t status;
+
+    status = line_to (stroker, &stroker->first_point);
+    if (unlikely (status))
+	return status;
+
+    return _close_path (stroker);
+}
+
+static cairo_status_t
+close_path_dashed (void *closure)
+{
+    struct stroker *stroker = closure;
+    cairo_status_t status;
+
+    status = line_to_dashed (stroker, &stroker->first_point);
+    if (unlikely (status))
+	return status;
+
+    return _close_path (stroker);
+}
+
+cairo_int_status_t
+_cairo_path_fixed_stroke_to_traps (const cairo_path_fixed_t	*path,
+				   const cairo_stroke_style_t	*style,
+				   const cairo_matrix_t		*ctm,
+				   const cairo_matrix_t		*ctm_inverse,
+				   double			 tolerance,
+				   cairo_traps_t		*traps)
+{
+    struct stroker stroker;
+    cairo_status_t status;
+
+    status = stroker_init (&stroker, path, style,
+			   ctm, ctm_inverse, tolerance,
+			   traps);
+    if (unlikely (status))
+	return status;
+
+    if (stroker.dash.dashed)
+	status = _cairo_path_fixed_interpret (path,
+					      move_to_dashed,
+					      line_to_dashed,
+					      curve_to_dashed,
+					      close_path_dashed,
+					      &stroker);
+    else
+	status = _cairo_path_fixed_interpret (path,
+					      move_to,
+					      line_to,
+					      curve_to,
+					      close_path,
+					      &stroker);
+    assert(status == CAIRO_STATUS_SUCCESS);
+    add_caps (&stroker);
+
+    stroker_fini (&stroker);
+
+    return traps->status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-stroke-tristrip.c b/libs/cairo-1.16.0/src/cairo-path-stroke-tristrip.c
new file mode 100644
index 0000000..3178765
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-stroke-tristrip.c
@@ -0,0 +1,1088 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#define _DEFAULT_SOURCE /* for hypot() */
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-slope-private.h"
+#include "cairo-tristrip-private.h"
+
+struct stroker {
+    cairo_stroke_style_t style;
+
+    cairo_tristrip_t *strip;
+
+    const cairo_matrix_t *ctm;
+    const cairo_matrix_t *ctm_inverse;
+    double tolerance;
+    cairo_bool_t ctm_det_positive;
+
+    cairo_pen_t pen;
+
+    cairo_bool_t has_sub_path;
+
+    cairo_point_t first_point;
+
+    cairo_bool_t has_current_face;
+    cairo_stroke_face_t current_face;
+
+    cairo_bool_t has_first_face;
+    cairo_stroke_face_t first_face;
+
+    cairo_box_t limit;
+    cairo_bool_t has_limits;
+};
+
+static inline double
+normalize_slope (double *dx, double *dy);
+
+static void
+compute_face (const cairo_point_t *point,
+	      const cairo_slope_t *dev_slope,
+	      struct stroker *stroker,
+	      cairo_stroke_face_t *face);
+
+static void
+translate_point (cairo_point_t *point, const cairo_point_t *offset)
+{
+    point->x += offset->x;
+    point->y += offset->y;
+}
+
+static int
+slope_compare_sgn (double dx1, double dy1, double dx2, double dy2)
+{
+    double  c = (dx1 * dy2 - dx2 * dy1);
+
+    if (c > 0) return 1;
+    if (c < 0) return -1;
+    return 0;
+}
+
+static inline int
+range_step (int i, int step, int max)
+{
+    i += step;
+    if (i < 0)
+	i = max - 1;
+    if (i >= max)
+	i = 0;
+    return i;
+}
+
+/*
+ * Construct a fan around the midpoint using the vertices from pen between
+ * inpt and outpt.
+ */
+static void
+add_fan (struct stroker *stroker,
+	 const cairo_slope_t *in_vector,
+	 const cairo_slope_t *out_vector,
+	 const cairo_point_t *midpt,
+	 const cairo_point_t *inpt,
+	 const cairo_point_t *outpt,
+	 cairo_bool_t clockwise)
+{
+    int start, stop, step, i, npoints;
+
+    if (clockwise) {
+	step  = 1;
+
+	start = _cairo_pen_find_active_cw_vertex_index (&stroker->pen,
+							in_vector);
+	if (_cairo_slope_compare (&stroker->pen.vertices[start].slope_cw,
+				  in_vector) < 0)
+	    start = range_step (start, 1, stroker->pen.num_vertices);
+
+	stop  = _cairo_pen_find_active_cw_vertex_index (&stroker->pen,
+							out_vector);
+	if (_cairo_slope_compare (&stroker->pen.vertices[stop].slope_ccw,
+				  out_vector) > 0)
+	{
+	    stop = range_step (stop, -1, stroker->pen.num_vertices);
+	    if (_cairo_slope_compare (&stroker->pen.vertices[stop].slope_cw,
+				      in_vector) < 0)
+		return;
+	}
+
+	npoints = stop - start;
+    } else {
+	step  = -1;
+
+	start = _cairo_pen_find_active_ccw_vertex_index (&stroker->pen,
+							 in_vector);
+	if (_cairo_slope_compare (&stroker->pen.vertices[start].slope_ccw,
+				  in_vector) < 0)
+	    start = range_step (start, -1, stroker->pen.num_vertices);
+
+	stop  = _cairo_pen_find_active_ccw_vertex_index (&stroker->pen,
+							 out_vector);
+	if (_cairo_slope_compare (&stroker->pen.vertices[stop].slope_cw,
+				  out_vector) > 0)
+	{
+	    stop = range_step (stop, 1, stroker->pen.num_vertices);
+	    if (_cairo_slope_compare (&stroker->pen.vertices[stop].slope_ccw,
+				      in_vector) < 0)
+		return;
+	}
+
+	npoints = start - stop;
+    }
+    stop = range_step (stop, step, stroker->pen.num_vertices);
+    if (npoints < 0)
+	npoints += stroker->pen.num_vertices;
+    if (npoints <= 1)
+	return;
+
+    for (i = start;
+	 i != stop;
+	i = range_step (i, step, stroker->pen.num_vertices))
+    {
+	cairo_point_t p = *midpt;
+	translate_point (&p, &stroker->pen.vertices[i].point);
+	//contour_add_point (stroker, c, &p);
+    }
+}
+
+static int
+join_is_clockwise (const cairo_stroke_face_t *in,
+		   const cairo_stroke_face_t *out)
+{
+    return _cairo_slope_compare (&in->dev_vector, &out->dev_vector) < 0;
+}
+
+static void
+inner_join (struct stroker *stroker,
+	    const cairo_stroke_face_t *in,
+	    const cairo_stroke_face_t *out,
+	    int clockwise)
+{
+    const cairo_point_t *outpt;
+
+    if (clockwise) {
+	outpt = &out->ccw;
+    } else {
+	outpt = &out->cw;
+    }
+    //contour_add_point (stroker, inner, &in->point);
+    //contour_add_point (stroker, inner, outpt);
+}
+
+static void
+inner_close (struct stroker *stroker,
+	     const cairo_stroke_face_t *in,
+	     cairo_stroke_face_t *out)
+{
+    const cairo_point_t *inpt;
+
+    if (join_is_clockwise (in, out)) {
+	inpt = &out->ccw;
+    } else {
+	inpt = &out->cw;
+    }
+
+    //contour_add_point (stroker, inner, &in->point);
+    //contour_add_point (stroker, inner, inpt);
+    //*_cairo_contour_first_point (&inner->contour) =
+	//*_cairo_contour_last_point (&inner->contour);
+}
+
+static void
+outer_close (struct stroker *stroker,
+	     const cairo_stroke_face_t *in,
+	     const cairo_stroke_face_t *out)
+{
+    const cairo_point_t	*inpt, *outpt;
+    int	clockwise;
+
+    if (in->cw.x == out->cw.x && in->cw.y == out->cw.y &&
+	in->ccw.x == out->ccw.x && in->ccw.y == out->ccw.y)
+    {
+	return;
+    }
+    clockwise = join_is_clockwise (in, out);
+    if (clockwise) {
+	inpt = &in->cw;
+	outpt = &out->cw;
+    } else {
+	inpt = &in->ccw;
+	outpt = &out->ccw;
+    }
+
+    switch (stroker->style.line_join) {
+    case CAIRO_LINE_JOIN_ROUND:
+	/* construct a fan around the common midpoint */
+	add_fan (stroker,
+		 &in->dev_vector,
+		 &out->dev_vector,
+		 &in->point, inpt, outpt,
+		 clockwise);
+	break;
+
+    case CAIRO_LINE_JOIN_MITER:
+    default: {
+	/* dot product of incoming slope vector with outgoing slope vector */
+	double	in_dot_out = -in->usr_vector.x * out->usr_vector.x +
+			     -in->usr_vector.y * out->usr_vector.y;
+	double	ml = stroker->style.miter_limit;
+
+	/* Check the miter limit -- lines meeting at an acute angle
+	 * can generate long miters, the limit converts them to bevel
+	 *
+	 * Consider the miter join formed when two line segments
+	 * meet at an angle psi:
+	 *
+	 *	   /.\
+	 *	  /. .\
+	 *	 /./ \.\
+	 *	/./psi\.\
+	 *
+	 * We can zoom in on the right half of that to see:
+	 *
+	 *	    |\
+	 *	    | \ psi/2
+	 *	    |  \
+	 *	    |   \
+	 *	    |    \
+	 *	    |     \
+	 *	  miter    \
+	 *	 length     \
+	 *	    |        \
+	 *	    |        .\
+	 *	    |    .     \
+	 *	    |.   line   \
+	 *	     \    width  \
+	 *	      \           \
+	 *
+	 *
+	 * The right triangle in that figure, (the line-width side is
+	 * shown faintly with three '.' characters), gives us the
+	 * following expression relating miter length, angle and line
+	 * width:
+	 *
+	 *	1 /sin (psi/2) = miter_length / line_width
+	 *
+	 * The right-hand side of this relationship is the same ratio
+	 * in which the miter limit (ml) is expressed. We want to know
+	 * when the miter length is within the miter limit. That is
+	 * when the following condition holds:
+	 *
+	 *	1/sin(psi/2) <= ml
+	 *	1 <= ml sin(psi/2)
+	 *	1 <= ml² sin²(psi/2)
+	 *	2 <= ml² 2 sin²(psi/2)
+	 *				2·sin²(psi/2) = 1-cos(psi)
+	 *	2 <= ml² (1-cos(psi))
+	 *
+	 *				in · out = |in| |out| cos (psi)
+	 *
+	 * in and out are both unit vectors, so:
+	 *
+	 *				in · out = cos (psi)
+	 *
+	 *	2 <= ml² (1 - in · out)
+	 *
+	 */
+	if (2 <= ml * ml * (1 - in_dot_out)) {
+	    double		x1, y1, x2, y2;
+	    double		mx, my;
+	    double		dx1, dx2, dy1, dy2;
+	    double		ix, iy;
+	    double		fdx1, fdy1, fdx2, fdy2;
+	    double		mdx, mdy;
+
+	    /*
+	     * we've got the points already transformed to device
+	     * space, but need to do some computation with them and
+	     * also need to transform the slope from user space to
+	     * device space
+	     */
+	    /* outer point of incoming line face */
+	    x1 = _cairo_fixed_to_double (inpt->x);
+	    y1 = _cairo_fixed_to_double (inpt->y);
+	    dx1 = in->usr_vector.x;
+	    dy1 = in->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx1, &dy1);
+
+	    /* outer point of outgoing line face */
+	    x2 = _cairo_fixed_to_double (outpt->x);
+	    y2 = _cairo_fixed_to_double (outpt->y);
+	    dx2 = out->usr_vector.x;
+	    dy2 = out->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx2, &dy2);
+
+	    /*
+	     * Compute the location of the outer corner of the miter.
+	     * That's pretty easy -- just the intersection of the two
+	     * outer edges.  We've got slopes and points on each
+	     * of those edges.  Compute my directly, then compute
+	     * mx by using the edge with the larger dy; that avoids
+	     * dividing by values close to zero.
+	     */
+	    my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) /
+		  (dx1 * dy2 - dx2 * dy1));
+	    if (fabs (dy1) >= fabs (dy2))
+		mx = (my - y1) * dx1 / dy1 + x1;
+	    else
+		mx = (my - y2) * dx2 / dy2 + x2;
+
+	    /*
+	     * When the two outer edges are nearly parallel, slight
+	     * perturbations in the position of the outer points of the lines
+	     * caused by representing them in fixed point form can cause the
+	     * intersection point of the miter to move a large amount. If
+	     * that moves the miter intersection from between the two faces,
+	     * then draw a bevel instead.
+	     */
+
+	    ix = _cairo_fixed_to_double (in->point.x);
+	    iy = _cairo_fixed_to_double (in->point.y);
+
+	    /* slope of one face */
+	    fdx1 = x1 - ix; fdy1 = y1 - iy;
+
+	    /* slope of the other face */
+	    fdx2 = x2 - ix; fdy2 = y2 - iy;
+
+	    /* slope from the intersection to the miter point */
+	    mdx = mx - ix; mdy = my - iy;
+
+	    /*
+	     * Make sure the miter point line lies between the two
+	     * faces by comparing the slopes
+	     */
+	    if (slope_compare_sgn (fdx1, fdy1, mdx, mdy) !=
+		slope_compare_sgn (fdx2, fdy2, mdx, mdy))
+	    {
+		cairo_point_t p;
+
+		p.x = _cairo_fixed_from_double (mx);
+		p.y = _cairo_fixed_from_double (my);
+
+		//*_cairo_contour_last_point (&outer->contour) = p;
+		//*_cairo_contour_first_point (&outer->contour) = p;
+		return;
+	    }
+	}
+	break;
+    }
+
+    case CAIRO_LINE_JOIN_BEVEL:
+	break;
+    }
+    //contour_add_point (stroker, outer, outpt);
+}
+
+static void
+outer_join (struct stroker *stroker,
+	    const cairo_stroke_face_t *in,
+	    const cairo_stroke_face_t *out,
+	    int clockwise)
+{
+    const cairo_point_t	*inpt, *outpt;
+
+    if (in->cw.x == out->cw.x && in->cw.y == out->cw.y &&
+	in->ccw.x == out->ccw.x && in->ccw.y == out->ccw.y)
+    {
+	return;
+    }
+    if (clockwise) {
+	inpt = &in->cw;
+	outpt = &out->cw;
+    } else {
+	inpt = &in->ccw;
+	outpt = &out->ccw;
+    }
+
+    switch (stroker->style.line_join) {
+    case CAIRO_LINE_JOIN_ROUND:
+	/* construct a fan around the common midpoint */
+	add_fan (stroker,
+		 &in->dev_vector,
+		 &out->dev_vector,
+		 &in->point, inpt, outpt,
+		 clockwise);
+	break;
+
+    case CAIRO_LINE_JOIN_MITER:
+    default: {
+	/* dot product of incoming slope vector with outgoing slope vector */
+	double	in_dot_out = -in->usr_vector.x * out->usr_vector.x +
+			     -in->usr_vector.y * out->usr_vector.y;
+	double	ml = stroker->style.miter_limit;
+
+	/* Check the miter limit -- lines meeting at an acute angle
+	 * can generate long miters, the limit converts them to bevel
+	 *
+	 * Consider the miter join formed when two line segments
+	 * meet at an angle psi:
+	 *
+	 *	   /.\
+	 *	  /. .\
+	 *	 /./ \.\
+	 *	/./psi\.\
+	 *
+	 * We can zoom in on the right half of that to see:
+	 *
+	 *	    |\
+	 *	    | \ psi/2
+	 *	    |  \
+	 *	    |   \
+	 *	    |    \
+	 *	    |     \
+	 *	  miter    \
+	 *	 length     \
+	 *	    |        \
+	 *	    |        .\
+	 *	    |    .     \
+	 *	    |.   line   \
+	 *	     \    width  \
+	 *	      \           \
+	 *
+	 *
+	 * The right triangle in that figure, (the line-width side is
+	 * shown faintly with three '.' characters), gives us the
+	 * following expression relating miter length, angle and line
+	 * width:
+	 *
+	 *	1 /sin (psi/2) = miter_length / line_width
+	 *
+	 * The right-hand side of this relationship is the same ratio
+	 * in which the miter limit (ml) is expressed. We want to know
+	 * when the miter length is within the miter limit. That is
+	 * when the following condition holds:
+	 *
+	 *	1/sin(psi/2) <= ml
+	 *	1 <= ml sin(psi/2)
+	 *	1 <= ml² sin²(psi/2)
+	 *	2 <= ml² 2 sin²(psi/2)
+	 *				2·sin²(psi/2) = 1-cos(psi)
+	 *	2 <= ml² (1-cos(psi))
+	 *
+	 *				in · out = |in| |out| cos (psi)
+	 *
+	 * in and out are both unit vectors, so:
+	 *
+	 *				in · out = cos (psi)
+	 *
+	 *	2 <= ml² (1 - in · out)
+	 *
+	 */
+	if (2 <= ml * ml * (1 - in_dot_out)) {
+	    double		x1, y1, x2, y2;
+	    double		mx, my;
+	    double		dx1, dx2, dy1, dy2;
+	    double		ix, iy;
+	    double		fdx1, fdy1, fdx2, fdy2;
+	    double		mdx, mdy;
+
+	    /*
+	     * we've got the points already transformed to device
+	     * space, but need to do some computation with them and
+	     * also need to transform the slope from user space to
+	     * device space
+	     */
+	    /* outer point of incoming line face */
+	    x1 = _cairo_fixed_to_double (inpt->x);
+	    y1 = _cairo_fixed_to_double (inpt->y);
+	    dx1 = in->usr_vector.x;
+	    dy1 = in->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx1, &dy1);
+
+	    /* outer point of outgoing line face */
+	    x2 = _cairo_fixed_to_double (outpt->x);
+	    y2 = _cairo_fixed_to_double (outpt->y);
+	    dx2 = out->usr_vector.x;
+	    dy2 = out->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx2, &dy2);
+
+	    /*
+	     * Compute the location of the outer corner of the miter.
+	     * That's pretty easy -- just the intersection of the two
+	     * outer edges.  We've got slopes and points on each
+	     * of those edges.  Compute my directly, then compute
+	     * mx by using the edge with the larger dy; that avoids
+	     * dividing by values close to zero.
+	     */
+	    my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) /
+		  (dx1 * dy2 - dx2 * dy1));
+	    if (fabs (dy1) >= fabs (dy2))
+		mx = (my - y1) * dx1 / dy1 + x1;
+	    else
+		mx = (my - y2) * dx2 / dy2 + x2;
+
+	    /*
+	     * When the two outer edges are nearly parallel, slight
+	     * perturbations in the position of the outer points of the lines
+	     * caused by representing them in fixed point form can cause the
+	     * intersection point of the miter to move a large amount. If
+	     * that moves the miter intersection from between the two faces,
+	     * then draw a bevel instead.
+	     */
+
+	    ix = _cairo_fixed_to_double (in->point.x);
+	    iy = _cairo_fixed_to_double (in->point.y);
+
+	    /* slope of one face */
+	    fdx1 = x1 - ix; fdy1 = y1 - iy;
+
+	    /* slope of the other face */
+	    fdx2 = x2 - ix; fdy2 = y2 - iy;
+
+	    /* slope from the intersection to the miter point */
+	    mdx = mx - ix; mdy = my - iy;
+
+	    /*
+	     * Make sure the miter point line lies between the two
+	     * faces by comparing the slopes
+	     */
+	    if (slope_compare_sgn (fdx1, fdy1, mdx, mdy) !=
+		slope_compare_sgn (fdx2, fdy2, mdx, mdy))
+	    {
+		cairo_point_t p;
+
+		p.x = _cairo_fixed_from_double (mx);
+		p.y = _cairo_fixed_from_double (my);
+
+		//*_cairo_contour_last_point (&outer->contour) = p;
+		return;
+	    }
+	}
+	break;
+    }
+
+    case CAIRO_LINE_JOIN_BEVEL:
+	break;
+    }
+    //contour_add_point (stroker,outer, outpt);
+}
+
+static void
+add_cap (struct stroker *stroker,
+	 const cairo_stroke_face_t *f)
+{
+    switch (stroker->style.line_cap) {
+    case CAIRO_LINE_CAP_ROUND: {
+	cairo_slope_t slope;
+
+	slope.dx = -f->dev_vector.dx;
+	slope.dy = -f->dev_vector.dy;
+
+	add_fan (stroker, &f->dev_vector, &slope,
+		 &f->point, &f->ccw, &f->cw,
+		 FALSE);
+	break;
+    }
+
+    case CAIRO_LINE_CAP_SQUARE: {
+	double dx, dy;
+	cairo_slope_t	fvector;
+	cairo_point_t	quad[4];
+
+	dx = f->usr_vector.x;
+	dy = f->usr_vector.y;
+	dx *= stroker->style.line_width / 2.0;
+	dy *= stroker->style.line_width / 2.0;
+	cairo_matrix_transform_distance (stroker->ctm, &dx, &dy);
+	fvector.dx = _cairo_fixed_from_double (dx);
+	fvector.dy = _cairo_fixed_from_double (dy);
+
+	quad[0] = f->ccw;
+	quad[1].x = f->ccw.x + fvector.dx;
+	quad[1].y = f->ccw.y + fvector.dy;
+	quad[2].x = f->cw.x + fvector.dx;
+	quad[2].y = f->cw.y + fvector.dy;
+	quad[3] = f->cw;
+
+	//contour_add_point (stroker, c, &quad[1]);
+	//contour_add_point (stroker, c, &quad[2]);
+    }
+
+    case CAIRO_LINE_CAP_BUTT:
+    default:
+	break;
+    }
+    //contour_add_point (stroker, c, &f->cw);
+}
+
+static void
+add_leading_cap (struct stroker *stroker,
+		 const cairo_stroke_face_t *face)
+{
+    cairo_stroke_face_t reversed;
+    cairo_point_t t;
+
+    reversed = *face;
+
+    /* The initial cap needs an outward facing vector. Reverse everything */
+    reversed.usr_vector.x = -reversed.usr_vector.x;
+    reversed.usr_vector.y = -reversed.usr_vector.y;
+    reversed.dev_vector.dx = -reversed.dev_vector.dx;
+    reversed.dev_vector.dy = -reversed.dev_vector.dy;
+
+    t = reversed.cw;
+    reversed.cw = reversed.ccw;
+    reversed.ccw = t;
+
+    add_cap (stroker, &reversed);
+}
+
+static void
+add_trailing_cap (struct stroker *stroker,
+		  const cairo_stroke_face_t *face)
+{
+    add_cap (stroker, face);
+}
+
+static inline double
+normalize_slope (double *dx, double *dy)
+{
+    double dx0 = *dx, dy0 = *dy;
+    double mag;
+
+    assert (dx0 != 0.0 || dy0 != 0.0);
+
+    if (dx0 == 0.0) {
+	*dx = 0.0;
+	if (dy0 > 0.0) {
+	    mag = dy0;
+	    *dy = 1.0;
+	} else {
+	    mag = -dy0;
+	    *dy = -1.0;
+	}
+    } else if (dy0 == 0.0) {
+	*dy = 0.0;
+	if (dx0 > 0.0) {
+	    mag = dx0;
+	    *dx = 1.0;
+	} else {
+	    mag = -dx0;
+	    *dx = -1.0;
+	}
+    } else {
+	mag = hypot (dx0, dy0);
+	*dx = dx0 / mag;
+	*dy = dy0 / mag;
+    }
+
+    return mag;
+}
+
+static void
+compute_face (const cairo_point_t *point,
+	      const cairo_slope_t *dev_slope,
+	      struct stroker *stroker,
+	      cairo_stroke_face_t *face)
+{
+    double face_dx, face_dy;
+    cairo_point_t offset_ccw, offset_cw;
+    double slope_dx, slope_dy;
+
+    slope_dx = _cairo_fixed_to_double (dev_slope->dx);
+    slope_dy = _cairo_fixed_to_double (dev_slope->dy);
+    face->length = normalize_slope (&slope_dx, &slope_dy);
+    face->dev_slope.x = slope_dx;
+    face->dev_slope.y = slope_dy;
+
+    /*
+     * rotate to get a line_width/2 vector along the face, note that
+     * the vector must be rotated the right direction in device space,
+     * but by 90° in user space. So, the rotation depends on
+     * whether the ctm reflects or not, and that can be determined
+     * by looking at the determinant of the matrix.
+     */
+    if (! _cairo_matrix_is_identity (stroker->ctm_inverse)) {
+	/* Normalize the matrix! */
+	cairo_matrix_transform_distance (stroker->ctm_inverse,
+					 &slope_dx, &slope_dy);
+	normalize_slope (&slope_dx, &slope_dy);
+
+	if (stroker->ctm_det_positive) {
+	    face_dx = - slope_dy * (stroker->style.line_width / 2.0);
+	    face_dy = slope_dx * (stroker->style.line_width / 2.0);
+	} else {
+	    face_dx = slope_dy * (stroker->style.line_width / 2.0);
+	    face_dy = - slope_dx * (stroker->style.line_width / 2.0);
+	}
+
+	/* back to device space */
+	cairo_matrix_transform_distance (stroker->ctm, &face_dx, &face_dy);
+    } else {
+	face_dx = - slope_dy * (stroker->style.line_width / 2.0);
+	face_dy = slope_dx * (stroker->style.line_width / 2.0);
+    }
+
+    offset_ccw.x = _cairo_fixed_from_double (face_dx);
+    offset_ccw.y = _cairo_fixed_from_double (face_dy);
+    offset_cw.x = -offset_ccw.x;
+    offset_cw.y = -offset_ccw.y;
+
+    face->ccw = *point;
+    translate_point (&face->ccw, &offset_ccw);
+
+    face->point = *point;
+
+    face->cw = *point;
+    translate_point (&face->cw, &offset_cw);
+
+    face->usr_vector.x = slope_dx;
+    face->usr_vector.y = slope_dy;
+
+    face->dev_vector = *dev_slope;
+}
+
+static void
+add_caps (struct stroker *stroker)
+{
+    /* check for a degenerative sub_path */
+    if (stroker->has_sub_path &&
+	! stroker->has_first_face &&
+	! stroker->has_current_face &&
+	stroker->style.line_cap == CAIRO_LINE_CAP_ROUND)
+    {
+	/* pick an arbitrary slope to use */
+	cairo_slope_t slope = { CAIRO_FIXED_ONE, 0 };
+	cairo_stroke_face_t face;
+
+	/* arbitrarily choose first_point */
+	compute_face (&stroker->first_point, &slope, stroker, &face);
+
+	add_leading_cap (stroker, &face);
+	add_trailing_cap (stroker, &face);
+
+	/* ensure the circle is complete */
+	//_cairo_contour_add_point (&stroker->ccw.contour,
+				  //_cairo_contour_first_point (&stroker->ccw.contour));
+    } else {
+	if (stroker->has_current_face)
+	    add_trailing_cap (stroker, &stroker->current_face);
+
+	//_cairo_polygon_add_contour (stroker->polygon, &stroker->ccw.contour);
+	//_cairo_contour_reset (&stroker->ccw.contour);
+
+	if (stroker->has_first_face) {
+	    //_cairo_contour_add_point (&stroker->ccw.contour,
+				      //&stroker->first_face.cw);
+	    add_leading_cap (stroker, &stroker->first_face);
+	    //_cairo_polygon_add_contour (stroker->polygon,
+					//&stroker->ccw.contour);
+	    //_cairo_contour_reset (&stroker->ccw.contour);
+	}
+    }
+}
+
+static cairo_status_t
+move_to (void *closure,
+	 const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+
+    /* Cap the start and end of the previous sub path as needed */
+    add_caps (stroker);
+
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+    stroker->has_sub_path = FALSE;
+
+    stroker->first_point = *point;
+
+    stroker->current_face.point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+line_to (void *closure,
+	 const cairo_point_t *point)
+{
+    struct stroker *stroker = closure;
+    cairo_stroke_face_t start;
+    cairo_point_t *p1 = &stroker->current_face.point;
+    cairo_slope_t dev_slope;
+
+    stroker->has_sub_path = TRUE;
+
+    if (p1->x == point->x && p1->y == point->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_slope_init (&dev_slope, p1, point);
+    compute_face (p1, &dev_slope, stroker, &start);
+
+    if (stroker->has_current_face) {
+	int clockwise = join_is_clockwise (&stroker->current_face, &start);
+	/* Join with final face from previous segment */
+	outer_join (stroker, &stroker->current_face, &start, clockwise);
+	inner_join (stroker, &stroker->current_face, &start, clockwise);
+    } else {
+	if (! stroker->has_first_face) {
+	    /* Save sub path's first face in case needed for closing join */
+	    stroker->first_face = start;
+	    _cairo_tristrip_move_to (stroker->strip, &start.cw);
+	    stroker->has_first_face = TRUE;
+	}
+	stroker->has_current_face = TRUE;
+
+	_cairo_tristrip_add_point (stroker->strip, &start.cw);
+	_cairo_tristrip_add_point (stroker->strip, &start.ccw);
+    }
+
+    stroker->current_face = start;
+    stroker->current_face.point = *point;
+    stroker->current_face.ccw.x += dev_slope.dx;
+    stroker->current_face.ccw.y += dev_slope.dy;
+    stroker->current_face.cw.x += dev_slope.dx;
+    stroker->current_face.cw.y += dev_slope.dy;
+
+    _cairo_tristrip_add_point (stroker->strip, &stroker->current_face.cw);
+    _cairo_tristrip_add_point (stroker->strip, &stroker->current_face.ccw);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+spline_to (void *closure,
+	   const cairo_point_t *point,
+	   const cairo_slope_t *tangent)
+{
+    struct stroker *stroker = closure;
+    cairo_stroke_face_t face;
+
+    if (tangent->dx == 0 && tangent->dy == 0) {
+	const cairo_point_t *inpt, *outpt;
+	cairo_point_t t;
+	int clockwise;
+
+	face = stroker->current_face;
+
+	face.usr_vector.x = -face.usr_vector.x;
+	face.usr_vector.y = -face.usr_vector.y;
+	face.dev_vector.dx = -face.dev_vector.dx;
+	face.dev_vector.dy = -face.dev_vector.dy;
+
+	t = face.cw;
+	face.cw = face.ccw;
+	face.ccw = t;
+
+	clockwise = join_is_clockwise (&stroker->current_face, &face);
+	if (clockwise) {
+	    inpt = &stroker->current_face.cw;
+	    outpt = &face.cw;
+	} else {
+	    inpt = &stroker->current_face.ccw;
+	    outpt = &face.ccw;
+	}
+
+	add_fan (stroker,
+		 &stroker->current_face.dev_vector,
+		 &face.dev_vector,
+		 &stroker->current_face.point, inpt, outpt,
+		 clockwise);
+    } else {
+	compute_face (point, tangent, stroker, &face);
+
+	if (face.dev_slope.x * stroker->current_face.dev_slope.x +
+	    face.dev_slope.y * stroker->current_face.dev_slope.y < 0)
+	{
+	    const cairo_point_t *inpt, *outpt;
+	    int clockwise = join_is_clockwise (&stroker->current_face, &face);
+
+	    stroker->current_face.cw.x += face.point.x - stroker->current_face.point.x;
+	    stroker->current_face.cw.y += face.point.y - stroker->current_face.point.y;
+	    //contour_add_point (stroker, &stroker->cw, &stroker->current_face.cw);
+
+	    stroker->current_face.ccw.x += face.point.x - stroker->current_face.point.x;
+	    stroker->current_face.ccw.y += face.point.y - stroker->current_face.point.y;
+	    //contour_add_point (stroker, &stroker->ccw, &stroker->current_face.ccw);
+
+	    if (clockwise) {
+		inpt = &stroker->current_face.cw;
+		outpt = &face.cw;
+	    } else {
+		inpt = &stroker->current_face.ccw;
+		outpt = &face.ccw;
+	    }
+	    add_fan (stroker,
+		     &stroker->current_face.dev_vector,
+		     &face.dev_vector,
+		     &stroker->current_face.point, inpt, outpt,
+		     clockwise);
+	}
+
+	_cairo_tristrip_add_point (stroker->strip, &face.cw);
+	_cairo_tristrip_add_point (stroker->strip, &face.ccw);
+    }
+
+    stroker->current_face = face;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+curve_to (void *closure,
+	  const cairo_point_t *b,
+	  const cairo_point_t *c,
+	  const cairo_point_t *d)
+{
+    struct stroker *stroker = closure;
+    cairo_spline_t spline;
+    cairo_stroke_face_t face;
+
+    if (stroker->has_limits) {
+	if (! _cairo_spline_intersects (&stroker->current_face.point, b, c, d,
+					&stroker->limit))
+	    return line_to (closure, d);
+    }
+
+    if (! _cairo_spline_init (&spline, spline_to, stroker,
+			      &stroker->current_face.point, b, c, d))
+	return line_to (closure, d);
+
+    compute_face (&stroker->current_face.point, &spline.initial_slope,
+		  stroker, &face);
+
+    if (stroker->has_current_face) {
+	int clockwise = join_is_clockwise (&stroker->current_face, &face);
+	/* Join with final face from previous segment */
+	outer_join (stroker, &stroker->current_face, &face, clockwise);
+	inner_join (stroker, &stroker->current_face, &face, clockwise);
+    } else {
+	if (! stroker->has_first_face) {
+	    /* Save sub path's first face in case needed for closing join */
+	    stroker->first_face = face;
+	    _cairo_tristrip_move_to (stroker->strip, &face.cw);
+	    stroker->has_first_face = TRUE;
+	}
+	stroker->has_current_face = TRUE;
+
+	_cairo_tristrip_add_point (stroker->strip, &face.cw);
+	_cairo_tristrip_add_point (stroker->strip, &face.ccw);
+    }
+    stroker->current_face = face;
+
+    return _cairo_spline_decompose (&spline, stroker->tolerance);
+}
+
+static cairo_status_t
+close_path (void *closure)
+{
+    struct stroker *stroker = closure;
+    cairo_status_t status;
+
+    status = line_to (stroker, &stroker->first_point);
+    if (unlikely (status))
+	return status;
+
+    if (stroker->has_first_face && stroker->has_current_face) {
+	/* Join first and final faces of sub path */
+	outer_close (stroker, &stroker->current_face, &stroker->first_face);
+	inner_close (stroker, &stroker->current_face, &stroker->first_face);
+    } else {
+	/* Cap the start and end of the sub path as needed */
+	add_caps (stroker);
+    }
+
+    stroker->has_sub_path = FALSE;
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_path_fixed_stroke_to_tristrip (const cairo_path_fixed_t	*path,
+				      const cairo_stroke_style_t*style,
+				      const cairo_matrix_t	*ctm,
+				      const cairo_matrix_t	*ctm_inverse,
+				      double			 tolerance,
+				      cairo_tristrip_t		 *strip)
+{
+    struct stroker stroker;
+    cairo_int_status_t status;
+    int i;
+
+    if (style->num_dashes)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    stroker.style = *style;
+    stroker.ctm = ctm;
+    stroker.ctm_inverse = ctm_inverse;
+    stroker.tolerance = tolerance;
+
+    stroker.ctm_det_positive =
+	_cairo_matrix_compute_determinant (ctm) >= 0.0;
+
+    status = _cairo_pen_init (&stroker.pen,
+		              style->line_width / 2.0,
+			      tolerance, ctm);
+    if (unlikely (status))
+	return status;
+
+    if (stroker.pen.num_vertices <= 1)
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    stroker.has_current_face = FALSE;
+    stroker.has_first_face = FALSE;
+    stroker.has_sub_path = FALSE;
+
+    stroker.has_limits = strip->num_limits > 0;
+    stroker.limit = strip->limits[0];
+    for (i = 1; i < strip->num_limits; i++)
+	_cairo_box_add_box (&stroker.limit, &strip->limits[i]);
+
+    stroker.strip = strip;
+
+    status = _cairo_path_fixed_interpret (path,
+					  move_to,
+					  line_to,
+					  curve_to,
+					  close_path,
+					  &stroker);
+    /* Cap the start and end of the final sub path as needed */
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	add_caps (&stroker);
+
+    _cairo_pen_fini (&stroker.pen);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path-stroke.c b/libs/cairo-1.16.0/src/cairo-path-stroke.c
new file mode 100644
index 0000000..64cec8f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path-stroke.c
@@ -0,0 +1,1485 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#define _DEFAULT_SOURCE /* for hypot() */
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-slope-private.h"
+#include "cairo-stroke-dash-private.h"
+#include "cairo-traps-private.h"
+
+typedef struct cairo_stroker {
+    cairo_stroke_style_t style;
+
+    const cairo_matrix_t *ctm;
+    const cairo_matrix_t *ctm_inverse;
+    double half_line_width;
+    double tolerance;
+    double spline_cusp_tolerance;
+    double ctm_determinant;
+    cairo_bool_t ctm_det_positive;
+
+    void *closure;
+    cairo_status_t (*add_external_edge) (void *closure,
+					 const cairo_point_t *p1,
+					 const cairo_point_t *p2);
+    cairo_status_t (*add_triangle) (void *closure,
+				    const cairo_point_t triangle[3]);
+    cairo_status_t (*add_triangle_fan) (void *closure,
+					const cairo_point_t *midpt,
+					const cairo_point_t *points,
+					int npoints);
+    cairo_status_t (*add_convex_quad) (void *closure,
+				       const cairo_point_t quad[4]);
+
+    cairo_pen_t	  pen;
+
+    cairo_point_t current_point;
+    cairo_point_t first_point;
+
+    cairo_bool_t has_initial_sub_path;
+
+    cairo_bool_t has_current_face;
+    cairo_stroke_face_t current_face;
+
+    cairo_bool_t has_first_face;
+    cairo_stroke_face_t first_face;
+
+    cairo_stroker_dash_t dash;
+
+    cairo_bool_t has_bounds;
+    cairo_box_t bounds;
+} cairo_stroker_t;
+
+static void
+_cairo_stroker_limit (cairo_stroker_t *stroker,
+		      const cairo_path_fixed_t *path,
+		      const cairo_box_t *boxes,
+		      int num_boxes)
+{
+    double dx, dy;
+    cairo_fixed_t fdx, fdy;
+
+    stroker->has_bounds = TRUE;
+    _cairo_boxes_get_extents (boxes, num_boxes, &stroker->bounds);
+
+    /* Extend the bounds in each direction to account for the maximum area
+     * we might generate trapezoids, to capture line segments that are outside
+     * of the bounds but which might generate rendering that's within bounds.
+     */
+
+    _cairo_stroke_style_max_distance_from_path (&stroker->style, path,
+						stroker->ctm, &dx, &dy);
+
+    fdx = _cairo_fixed_from_double (dx);
+    fdy = _cairo_fixed_from_double (dy);
+
+    stroker->bounds.p1.x -= fdx;
+    stroker->bounds.p2.x += fdx;
+
+    stroker->bounds.p1.y -= fdy;
+    stroker->bounds.p2.y += fdy;
+}
+
+static cairo_status_t
+_cairo_stroker_init (cairo_stroker_t		*stroker,
+		     const cairo_path_fixed_t	*path,
+		     const cairo_stroke_style_t	*stroke_style,
+		     const cairo_matrix_t	*ctm,
+		     const cairo_matrix_t	*ctm_inverse,
+		     double			 tolerance,
+		     const cairo_box_t		*limits,
+		     int			 num_limits)
+{
+    cairo_status_t status;
+
+    stroker->style = *stroke_style;
+    stroker->ctm = ctm;
+    stroker->ctm_inverse = ctm_inverse;
+    stroker->tolerance = tolerance;
+    stroker->half_line_width = stroke_style->line_width / 2.0;
+
+    /* To test whether we need to join two segments of a spline using
+     * a round-join or a bevel-join, we can inspect the angle between the
+     * two segments. If the difference between the chord distance
+     * (half-line-width times the cosine of the bisection angle) and the
+     * half-line-width itself is greater than tolerance then we need to
+     * inject a point.
+     */
+    stroker->spline_cusp_tolerance = 1 - tolerance / stroker->half_line_width;
+    stroker->spline_cusp_tolerance *= stroker->spline_cusp_tolerance;
+    stroker->spline_cusp_tolerance *= 2;
+    stroker->spline_cusp_tolerance -= 1;
+
+    stroker->ctm_determinant = _cairo_matrix_compute_determinant (stroker->ctm);
+    stroker->ctm_det_positive = stroker->ctm_determinant >= 0.0;
+
+    status = _cairo_pen_init (&stroker->pen,
+			      stroker->half_line_width, tolerance, ctm);
+    if (unlikely (status))
+	return status;
+
+    stroker->has_current_face = FALSE;
+    stroker->has_first_face = FALSE;
+    stroker->has_initial_sub_path = FALSE;
+
+    _cairo_stroker_dash_init (&stroker->dash, stroke_style);
+
+    stroker->add_external_edge = NULL;
+
+    stroker->has_bounds = FALSE;
+    if (num_limits)
+	_cairo_stroker_limit (stroker, path, limits, num_limits);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_stroker_fini (cairo_stroker_t *stroker)
+{
+    _cairo_pen_fini (&stroker->pen);
+}
+
+static void
+_translate_point (cairo_point_t *point, const cairo_point_t *offset)
+{
+    point->x += offset->x;
+    point->y += offset->y;
+}
+
+static int
+_cairo_stroker_join_is_clockwise (const cairo_stroke_face_t *in,
+				  const cairo_stroke_face_t *out)
+{
+    cairo_slope_t in_slope, out_slope;
+
+    _cairo_slope_init (&in_slope, &in->point, &in->cw);
+    _cairo_slope_init (&out_slope, &out->point, &out->cw);
+
+    return _cairo_slope_compare (&in_slope, &out_slope) < 0;
+}
+
+/**
+ * _cairo_slope_compare_sgn:
+ *
+ * Return -1, 0 or 1 depending on the relative slopes of
+ * two lines.
+ **/
+static int
+_cairo_slope_compare_sgn (double dx1, double dy1, double dx2, double dy2)
+{
+    double  c = (dx1 * dy2 - dx2 * dy1);
+
+    if (c > 0) return 1;
+    if (c < 0) return -1;
+    return 0;
+}
+
+static inline int
+_range_step (int i, int step, int max)
+{
+    i += step;
+    if (i < 0)
+	i = max - 1;
+    if (i >= max)
+	i = 0;
+    return i;
+}
+
+/*
+ * Construct a fan around the midpoint using the vertices from pen between
+ * inpt and outpt.
+ */
+static cairo_status_t
+_tessellate_fan (cairo_stroker_t *stroker,
+		 const cairo_slope_t *in_vector,
+		 const cairo_slope_t *out_vector,
+		 const cairo_point_t *midpt,
+		 const cairo_point_t *inpt,
+		 const cairo_point_t *outpt,
+		 cairo_bool_t clockwise)
+{
+    cairo_point_t stack_points[64], *points = stack_points;
+    cairo_pen_t *pen = &stroker->pen;
+    int start, stop, num_points = 0;
+    cairo_status_t status;
+
+    if (stroker->has_bounds &&
+	! _cairo_box_contains_point (&stroker->bounds, midpt))
+	goto BEVEL;
+
+    assert (stroker->pen.num_vertices);
+
+    if (clockwise) {
+	_cairo_pen_find_active_ccw_vertices (pen,
+					     in_vector, out_vector,
+					     &start, &stop);
+	if (stroker->add_external_edge) {
+	    cairo_point_t last;
+	    last = *inpt;
+	    while (start != stop) {
+		cairo_point_t p = *midpt;
+		_translate_point (&p, &pen->vertices[start].point);
+
+		status = stroker->add_external_edge (stroker->closure,
+						     &last, &p);
+		if (unlikely (status))
+		    return status;
+		last = p;
+
+		if (start-- == 0)
+		    start += pen->num_vertices;
+	    }
+	    status = stroker->add_external_edge (stroker->closure,
+						 &last, outpt);
+	} else {
+	    if (start == stop)
+		goto BEVEL;
+
+	    num_points = stop - start;
+	    if (num_points < 0)
+		num_points += pen->num_vertices;
+	    num_points += 2;
+	    if (num_points > ARRAY_LENGTH(stack_points)) {
+		points = _cairo_malloc_ab (num_points, sizeof (cairo_point_t));
+		if (unlikely (points == NULL))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+
+	    points[0] = *inpt;
+	    num_points = 1;
+	    while (start != stop) {
+		points[num_points] = *midpt;
+		_translate_point (&points[num_points], &pen->vertices[start].point);
+		num_points++;
+
+		if (start-- == 0)
+		    start += pen->num_vertices;
+	    }
+	    points[num_points++] = *outpt;
+	}
+    } else {
+	_cairo_pen_find_active_cw_vertices (pen,
+					    in_vector, out_vector,
+					    &start, &stop);
+	if (stroker->add_external_edge) {
+	    cairo_point_t last;
+	    last = *inpt;
+	    while (start != stop) {
+		cairo_point_t p = *midpt;
+		_translate_point (&p, &pen->vertices[start].point);
+
+		status = stroker->add_external_edge (stroker->closure,
+						     &p, &last);
+		if (unlikely (status))
+		    return status;
+		last = p;
+
+		if (++start == pen->num_vertices)
+		    start = 0;
+	    }
+	    status = stroker->add_external_edge (stroker->closure,
+						 outpt, &last);
+	} else {
+	    if (start == stop)
+		goto BEVEL;
+
+	    num_points = stop - start;
+	    if (num_points < 0)
+		num_points += pen->num_vertices;
+	    num_points += 2;
+	    if (num_points > ARRAY_LENGTH(stack_points)) {
+		points = _cairo_malloc_ab (num_points, sizeof (cairo_point_t));
+		if (unlikely (points == NULL))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+
+	    points[0] = *inpt;
+	    num_points = 1;
+	    while (start != stop) {
+		points[num_points] = *midpt;
+		_translate_point (&points[num_points], &pen->vertices[start].point);
+		num_points++;
+
+		if (++start == pen->num_vertices)
+		    start = 0;
+	    }
+	    points[num_points++] = *outpt;
+	}
+    }
+
+    if (num_points) {
+	status = stroker->add_triangle_fan (stroker->closure,
+					    midpt, points, num_points);
+    }
+
+    if (points != stack_points)
+	free (points);
+
+    return status;
+
+BEVEL:
+    /* Ensure a leak free connection... */
+    if (stroker->add_external_edge != NULL) {
+	if (clockwise)
+	    return stroker->add_external_edge (stroker->closure, inpt, outpt);
+	else
+	    return stroker->add_external_edge (stroker->closure, outpt, inpt);
+    } else {
+	stack_points[0] = *midpt;
+	stack_points[1] = *inpt;
+	stack_points[2] = *outpt;
+	return stroker->add_triangle (stroker->closure, stack_points);
+    }
+}
+
+static cairo_status_t
+_cairo_stroker_join (cairo_stroker_t *stroker,
+		     const cairo_stroke_face_t *in,
+		     const cairo_stroke_face_t *out)
+{
+    int	 clockwise = _cairo_stroker_join_is_clockwise (out, in);
+    const cairo_point_t	*inpt, *outpt;
+    cairo_point_t points[4];
+    cairo_status_t status;
+
+    if (in->cw.x  == out->cw.x  && in->cw.y  == out->cw.y &&
+	in->ccw.x == out->ccw.x && in->ccw.y == out->ccw.y)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (clockwise) {
+	if (stroker->add_external_edge != NULL) {
+	    status = stroker->add_external_edge (stroker->closure,
+						 &out->cw, &in->point);
+	    if (unlikely (status))
+		return status;
+
+	    status = stroker->add_external_edge (stroker->closure,
+						 &in->point, &in->cw);
+	    if (unlikely (status))
+		return status;
+	}
+
+	inpt = &in->ccw;
+	outpt = &out->ccw;
+    } else {
+	if (stroker->add_external_edge != NULL) {
+	    status = stroker->add_external_edge (stroker->closure,
+						 &in->ccw, &in->point);
+	    if (unlikely (status))
+		return status;
+
+	    status = stroker->add_external_edge (stroker->closure,
+						 &in->point, &out->ccw);
+	    if (unlikely (status))
+		return status;
+	}
+
+	inpt = &in->cw;
+	outpt = &out->cw;
+    }
+
+    switch (stroker->style.line_join) {
+    case CAIRO_LINE_JOIN_ROUND:
+	/* construct a fan around the common midpoint */
+	return _tessellate_fan (stroker,
+				&in->dev_vector,
+				&out->dev_vector,
+				&in->point, inpt, outpt,
+				clockwise);
+
+    case CAIRO_LINE_JOIN_MITER:
+    default: {
+	/* dot product of incoming slope vector with outgoing slope vector */
+	double	in_dot_out = -in->usr_vector.x * out->usr_vector.x +
+			     -in->usr_vector.y * out->usr_vector.y;
+	double	ml = stroker->style.miter_limit;
+
+	/* Check the miter limit -- lines meeting at an acute angle
+	 * can generate long miters, the limit converts them to bevel
+	 *
+	 * Consider the miter join formed when two line segments
+	 * meet at an angle psi:
+	 *
+	 *	   /.\
+	 *	  /. .\
+	 *	 /./ \.\
+	 *	/./psi\.\
+	 *
+	 * We can zoom in on the right half of that to see:
+	 *
+	 *	    |\
+	 *	    | \ psi/2
+	 *	    |  \
+	 *	    |   \
+	 *	    |    \
+	 *	    |     \
+	 *	  miter    \
+	 *	 length     \
+	 *	    |        \
+	 *	    |        .\
+	 *	    |    .     \
+	 *	    |.   line   \
+	 *	     \    width  \
+	 *	      \           \
+	 *
+	 *
+	 * The right triangle in that figure, (the line-width side is
+	 * shown faintly with three '.' characters), gives us the
+	 * following expression relating miter length, angle and line
+	 * width:
+	 *
+	 *	1 /sin (psi/2) = miter_length / line_width
+	 *
+	 * The right-hand side of this relationship is the same ratio
+	 * in which the miter limit (ml) is expressed. We want to know
+	 * when the miter length is within the miter limit. That is
+	 * when the following condition holds:
+	 *
+	 *	1/sin(psi/2) <= ml
+	 *	1 <= ml sin(psi/2)
+	 *	1 <= ml² sin²(psi/2)
+	 *	2 <= ml² 2 sin²(psi/2)
+	 *				2·sin²(psi/2) = 1-cos(psi)
+	 *	2 <= ml² (1-cos(psi))
+	 *
+	 *				in · out = |in| |out| cos (psi)
+	 *
+	 * in and out are both unit vectors, so:
+	 *
+	 *				in · out = cos (psi)
+	 *
+	 *	2 <= ml² (1 - in · out)
+	 *
+	 */
+	if (2 <= ml * ml * (1 - in_dot_out)) {
+	    double		x1, y1, x2, y2;
+	    double		mx, my;
+	    double		dx1, dx2, dy1, dy2;
+	    double		ix, iy;
+	    double		fdx1, fdy1, fdx2, fdy2;
+	    double		mdx, mdy;
+
+	    /*
+	     * we've got the points already transformed to device
+	     * space, but need to do some computation with them and
+	     * also need to transform the slope from user space to
+	     * device space
+	     */
+	    /* outer point of incoming line face */
+	    x1 = _cairo_fixed_to_double (inpt->x);
+	    y1 = _cairo_fixed_to_double (inpt->y);
+	    dx1 = in->usr_vector.x;
+	    dy1 = in->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx1, &dy1);
+
+	    /* outer point of outgoing line face */
+	    x2 = _cairo_fixed_to_double (outpt->x);
+	    y2 = _cairo_fixed_to_double (outpt->y);
+	    dx2 = out->usr_vector.x;
+	    dy2 = out->usr_vector.y;
+	    cairo_matrix_transform_distance (stroker->ctm, &dx2, &dy2);
+
+	    /*
+	     * Compute the location of the outer corner of the miter.
+	     * That's pretty easy -- just the intersection of the two
+	     * outer edges.  We've got slopes and points on each
+	     * of those edges.  Compute my directly, then compute
+	     * mx by using the edge with the larger dy; that avoids
+	     * dividing by values close to zero.
+	     */
+	    my = (((x2 - x1) * dy1 * dy2 - y2 * dx2 * dy1 + y1 * dx1 * dy2) /
+		  (dx1 * dy2 - dx2 * dy1));
+	    if (fabs (dy1) >= fabs (dy2))
+		mx = (my - y1) * dx1 / dy1 + x1;
+	    else
+		mx = (my - y2) * dx2 / dy2 + x2;
+
+	    /*
+	     * When the two outer edges are nearly parallel, slight
+	     * perturbations in the position of the outer points of the lines
+	     * caused by representing them in fixed point form can cause the
+	     * intersection point of the miter to move a large amount. If
+	     * that moves the miter intersection from between the two faces,
+	     * then draw a bevel instead.
+	     */
+
+	    ix = _cairo_fixed_to_double (in->point.x);
+	    iy = _cairo_fixed_to_double (in->point.y);
+
+	    /* slope of one face */
+	    fdx1 = x1 - ix; fdy1 = y1 - iy;
+
+	    /* slope of the other face */
+	    fdx2 = x2 - ix; fdy2 = y2 - iy;
+
+	    /* slope from the intersection to the miter point */
+	    mdx = mx - ix; mdy = my - iy;
+
+	    /*
+	     * Make sure the miter point line lies between the two
+	     * faces by comparing the slopes
+	     */
+	    if (_cairo_slope_compare_sgn (fdx1, fdy1, mdx, mdy) !=
+		_cairo_slope_compare_sgn (fdx2, fdy2, mdx, mdy))
+	    {
+		if (stroker->add_external_edge != NULL) {
+		    points[0].x = _cairo_fixed_from_double (mx);
+		    points[0].y = _cairo_fixed_from_double (my);
+
+		    if (clockwise) {
+			status = stroker->add_external_edge (stroker->closure,
+							     inpt, &points[0]);
+			if (unlikely (status))
+			    return status;
+
+			status = stroker->add_external_edge (stroker->closure,
+							     &points[0], outpt);
+			if (unlikely (status))
+			    return status;
+		    } else {
+			status = stroker->add_external_edge (stroker->closure,
+							     outpt, &points[0]);
+			if (unlikely (status))
+			    return status;
+
+			status = stroker->add_external_edge (stroker->closure,
+							     &points[0], inpt);
+			if (unlikely (status))
+			    return status;
+		    }
+
+		    return CAIRO_STATUS_SUCCESS;
+		} else {
+		    points[0] = in->point;
+		    points[1] = *inpt;
+		    points[2].x = _cairo_fixed_from_double (mx);
+		    points[2].y = _cairo_fixed_from_double (my);
+		    points[3] = *outpt;
+
+		    return stroker->add_convex_quad (stroker->closure, points);
+		}
+	    }
+	}
+    }
+
+    /* fall through ... */
+
+    case CAIRO_LINE_JOIN_BEVEL:
+	if (stroker->add_external_edge != NULL) {
+	    if (clockwise) {
+		return stroker->add_external_edge (stroker->closure,
+						   inpt, outpt);
+	    } else {
+		return stroker->add_external_edge (stroker->closure,
+						   outpt, inpt);
+	    }
+	} else {
+	    points[0] = in->point;
+	    points[1] = *inpt;
+	    points[2] = *outpt;
+
+	    return stroker->add_triangle (stroker->closure, points);
+	}
+    }
+}
+
+static cairo_status_t
+_cairo_stroker_add_cap (cairo_stroker_t *stroker,
+			const cairo_stroke_face_t *f)
+{
+    switch (stroker->style.line_cap) {
+    case CAIRO_LINE_CAP_ROUND: {
+	cairo_slope_t slope;
+
+	slope.dx = -f->dev_vector.dx;
+	slope.dy = -f->dev_vector.dy;
+
+	return _tessellate_fan (stroker,
+				&f->dev_vector,
+				&slope,
+				&f->point, &f->cw, &f->ccw,
+				FALSE);
+
+    }
+
+    case CAIRO_LINE_CAP_SQUARE: {
+	double dx, dy;
+	cairo_slope_t	fvector;
+	cairo_point_t	quad[4];
+
+	dx = f->usr_vector.x;
+	dy = f->usr_vector.y;
+	dx *= stroker->half_line_width;
+	dy *= stroker->half_line_width;
+	cairo_matrix_transform_distance (stroker->ctm, &dx, &dy);
+	fvector.dx = _cairo_fixed_from_double (dx);
+	fvector.dy = _cairo_fixed_from_double (dy);
+
+	quad[0] = f->ccw;
+	quad[1].x = f->ccw.x + fvector.dx;
+	quad[1].y = f->ccw.y + fvector.dy;
+	quad[2].x = f->cw.x + fvector.dx;
+	quad[2].y = f->cw.y + fvector.dy;
+	quad[3] = f->cw;
+
+	if (stroker->add_external_edge != NULL) {
+	    cairo_status_t status;
+
+	    status = stroker->add_external_edge (stroker->closure,
+						 &quad[0], &quad[1]);
+	    if (unlikely (status))
+		return status;
+
+	    status = stroker->add_external_edge (stroker->closure,
+						 &quad[1], &quad[2]);
+	    if (unlikely (status))
+		return status;
+
+	    status = stroker->add_external_edge (stroker->closure,
+						 &quad[2], &quad[3]);
+	    if (unlikely (status))
+		return status;
+
+	    return CAIRO_STATUS_SUCCESS;
+	} else {
+	    return stroker->add_convex_quad (stroker->closure, quad);
+	}
+    }
+
+    case CAIRO_LINE_CAP_BUTT:
+    default:
+	if (stroker->add_external_edge != NULL) {
+	    return stroker->add_external_edge (stroker->closure,
+					       &f->ccw, &f->cw);
+	} else {
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+}
+
+static cairo_status_t
+_cairo_stroker_add_leading_cap (cairo_stroker_t     *stroker,
+				const cairo_stroke_face_t *face)
+{
+    cairo_stroke_face_t reversed;
+    cairo_point_t t;
+
+    reversed = *face;
+
+    /* The initial cap needs an outward facing vector. Reverse everything */
+    reversed.usr_vector.x = -reversed.usr_vector.x;
+    reversed.usr_vector.y = -reversed.usr_vector.y;
+    reversed.dev_vector.dx = -reversed.dev_vector.dx;
+    reversed.dev_vector.dy = -reversed.dev_vector.dy;
+    t = reversed.cw;
+    reversed.cw = reversed.ccw;
+    reversed.ccw = t;
+
+    return _cairo_stroker_add_cap (stroker, &reversed);
+}
+
+static cairo_status_t
+_cairo_stroker_add_trailing_cap (cairo_stroker_t     *stroker,
+				 const cairo_stroke_face_t *face)
+{
+    return _cairo_stroker_add_cap (stroker, face);
+}
+
+static inline cairo_bool_t
+_compute_normalized_device_slope (double *dx, double *dy,
+				  const cairo_matrix_t *ctm_inverse,
+				  double *mag_out)
+{
+    double dx0 = *dx, dy0 = *dy;
+    double mag;
+
+    cairo_matrix_transform_distance (ctm_inverse, &dx0, &dy0);
+
+    if (dx0 == 0.0 && dy0 == 0.0) {
+	if (mag_out)
+	    *mag_out = 0.0;
+	return FALSE;
+    }
+
+    if (dx0 == 0.0) {
+	*dx = 0.0;
+	if (dy0 > 0.0) {
+	    mag = dy0;
+	    *dy = 1.0;
+	} else {
+	    mag = -dy0;
+	    *dy = -1.0;
+	}
+    } else if (dy0 == 0.0) {
+	*dy = 0.0;
+	if (dx0 > 0.0) {
+	    mag = dx0;
+	    *dx = 1.0;
+	} else {
+	    mag = -dx0;
+	    *dx = -1.0;
+	}
+    } else {
+	mag = hypot (dx0, dy0);
+	*dx = dx0 / mag;
+	*dy = dy0 / mag;
+    }
+
+    if (mag_out)
+	*mag_out = mag;
+
+    return TRUE;
+}
+
+static void
+_compute_face (const cairo_point_t *point,
+	       const cairo_slope_t *dev_slope,
+	       double slope_dx,
+	       double slope_dy,
+	       cairo_stroker_t *stroker,
+	       cairo_stroke_face_t *face)
+{
+    double face_dx, face_dy;
+    cairo_point_t offset_ccw, offset_cw;
+
+    /*
+     * rotate to get a line_width/2 vector along the face, note that
+     * the vector must be rotated the right direction in device space,
+     * but by 90° in user space. So, the rotation depends on
+     * whether the ctm reflects or not, and that can be determined
+     * by looking at the determinant of the matrix.
+     */
+    if (stroker->ctm_det_positive)
+    {
+	face_dx = - slope_dy * stroker->half_line_width;
+	face_dy = slope_dx * stroker->half_line_width;
+    }
+    else
+    {
+	face_dx = slope_dy * stroker->half_line_width;
+	face_dy = - slope_dx * stroker->half_line_width;
+    }
+
+    /* back to device space */
+    cairo_matrix_transform_distance (stroker->ctm, &face_dx, &face_dy);
+
+    offset_ccw.x = _cairo_fixed_from_double (face_dx);
+    offset_ccw.y = _cairo_fixed_from_double (face_dy);
+    offset_cw.x = -offset_ccw.x;
+    offset_cw.y = -offset_ccw.y;
+
+    face->ccw = *point;
+    _translate_point (&face->ccw, &offset_ccw);
+
+    face->point = *point;
+
+    face->cw = *point;
+    _translate_point (&face->cw, &offset_cw);
+
+    face->usr_vector.x = slope_dx;
+    face->usr_vector.y = slope_dy;
+
+    face->dev_vector = *dev_slope;
+}
+
+static cairo_status_t
+_cairo_stroker_add_caps (cairo_stroker_t *stroker)
+{
+    cairo_status_t status;
+
+    /* check for a degenerative sub_path */
+    if (stroker->has_initial_sub_path
+	&& ! stroker->has_first_face
+	&& ! stroker->has_current_face
+	&& stroker->style.line_cap == CAIRO_LINE_CAP_ROUND)
+    {
+	/* pick an arbitrary slope to use */
+	double dx = 1.0, dy = 0.0;
+	cairo_slope_t slope = { CAIRO_FIXED_ONE, 0 };
+	cairo_stroke_face_t face;
+
+	_compute_normalized_device_slope (&dx, &dy,
+					  stroker->ctm_inverse, NULL);
+
+	/* arbitrarily choose first_point
+	 * first_point and current_point should be the same */
+	_compute_face (&stroker->first_point, &slope, dx, dy, stroker, &face);
+
+	status = _cairo_stroker_add_leading_cap (stroker, &face);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_stroker_add_trailing_cap (stroker, &face);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (stroker->has_first_face) {
+	status = _cairo_stroker_add_leading_cap (stroker,
+						 &stroker->first_face);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (stroker->has_current_face) {
+	status = _cairo_stroker_add_trailing_cap (stroker,
+						  &stroker->current_face);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_stroker_add_sub_edge (cairo_stroker_t *stroker,
+			     const cairo_point_t *p1,
+			     const cairo_point_t *p2,
+			     cairo_slope_t *dev_slope,
+			     double slope_dx, double slope_dy,
+			     cairo_stroke_face_t *start,
+			     cairo_stroke_face_t *end)
+{
+    _compute_face (p1, dev_slope, slope_dx, slope_dy, stroker, start);
+    *end = *start;
+
+    if (p1->x == p2->x && p1->y == p2->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    end->point = *p2;
+    end->ccw.x += p2->x - p1->x;
+    end->ccw.y += p2->y - p1->y;
+    end->cw.x += p2->x - p1->x;
+    end->cw.y += p2->y - p1->y;
+
+    if (stroker->add_external_edge != NULL) {
+	cairo_status_t status;
+
+	status = stroker->add_external_edge (stroker->closure,
+					     &end->cw, &start->cw);
+	if (unlikely (status))
+	    return status;
+
+	status = stroker->add_external_edge (stroker->closure,
+					     &start->ccw, &end->ccw);
+	if (unlikely (status))
+	    return status;
+
+	return CAIRO_STATUS_SUCCESS;
+    } else {
+	cairo_point_t quad[4];
+
+	quad[0] = start->cw;
+	quad[1] = end->cw;
+	quad[2] = end->ccw;
+	quad[3] = start->ccw;
+
+	return stroker->add_convex_quad (stroker->closure, quad);
+    }
+}
+
+static cairo_status_t
+_cairo_stroker_move_to (void *closure,
+			const cairo_point_t *point)
+{
+    cairo_stroker_t *stroker = closure;
+    cairo_status_t status;
+
+    /* reset the dash pattern for new sub paths */
+    _cairo_stroker_dash_start (&stroker->dash);
+
+    /* Cap the start and end of the previous sub path as needed */
+    status = _cairo_stroker_add_caps (stroker);
+    if (unlikely (status))
+	return status;
+
+    stroker->first_point = *point;
+    stroker->current_point = *point;
+
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+    stroker->has_initial_sub_path = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_stroker_line_to (void *closure,
+			const cairo_point_t *point)
+{
+    cairo_stroker_t *stroker = closure;
+    cairo_stroke_face_t start, end;
+    cairo_point_t *p1 = &stroker->current_point;
+    cairo_slope_t dev_slope;
+    double slope_dx, slope_dy;
+    cairo_status_t status;
+
+    stroker->has_initial_sub_path = TRUE;
+
+    if (p1->x == point->x && p1->y == point->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_slope_init (&dev_slope, p1, point);
+    slope_dx = _cairo_fixed_to_double (point->x - p1->x);
+    slope_dy = _cairo_fixed_to_double (point->y - p1->y);
+    _compute_normalized_device_slope (&slope_dx, &slope_dy,
+				      stroker->ctm_inverse, NULL);
+
+    status = _cairo_stroker_add_sub_edge (stroker,
+					  p1, point,
+					  &dev_slope,
+					  slope_dx, slope_dy,
+					  &start, &end);
+    if (unlikely (status))
+	return status;
+
+    if (stroker->has_current_face) {
+	/* Join with final face from previous segment */
+	status = _cairo_stroker_join (stroker,
+				      &stroker->current_face,
+				      &start);
+	if (unlikely (status))
+	    return status;
+    } else if (! stroker->has_first_face) {
+	/* Save sub path's first face in case needed for closing join */
+	stroker->first_face = start;
+	stroker->has_first_face = TRUE;
+    }
+    stroker->current_face = end;
+    stroker->has_current_face = TRUE;
+
+    stroker->current_point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_stroker_spline_to (void *closure,
+			  const cairo_point_t *point,
+			  const cairo_slope_t *tangent)
+{
+    cairo_stroker_t *stroker = closure;
+    cairo_stroke_face_t new_face;
+    double slope_dx, slope_dy;
+    cairo_point_t points[3];
+    cairo_point_t intersect_point;
+
+    stroker->has_initial_sub_path = TRUE;
+
+    if (stroker->current_point.x == point->x &&
+	stroker->current_point.y == point->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    slope_dx = _cairo_fixed_to_double (tangent->dx);
+    slope_dy = _cairo_fixed_to_double (tangent->dy);
+
+    if (! _compute_normalized_device_slope (&slope_dx, &slope_dy,
+					    stroker->ctm_inverse, NULL))
+	return CAIRO_STATUS_SUCCESS;
+
+    _compute_face (point, tangent,
+		   slope_dx, slope_dy,
+		   stroker, &new_face);
+
+    assert (stroker->has_current_face);
+
+    if ((new_face.dev_slope.x * stroker->current_face.dev_slope.x +
+         new_face.dev_slope.y * stroker->current_face.dev_slope.y) < stroker->spline_cusp_tolerance) {
+
+	const cairo_point_t *inpt, *outpt;
+	int clockwise = _cairo_stroker_join_is_clockwise (&new_face,
+							  &stroker->current_face);
+
+	if (clockwise) {
+	    inpt = &stroker->current_face.cw;
+	    outpt = &new_face.cw;
+	} else {
+	    inpt = &stroker->current_face.ccw;
+	    outpt = &new_face.ccw;
+	}
+
+	_tessellate_fan (stroker,
+			 &stroker->current_face.dev_vector,
+			 &new_face.dev_vector,
+			 &stroker->current_face.point,
+			 inpt, outpt,
+			 clockwise);
+    }
+
+    if (_slow_segment_intersection (&stroker->current_face.cw,
+				    &stroker->current_face.ccw,
+				    &new_face.cw,
+				    &new_face.ccw,
+				    &intersect_point)) {
+	points[0] = stroker->current_face.ccw;
+	points[1] = new_face.ccw;
+	points[2] = intersect_point;
+	stroker->add_triangle (stroker->closure, points);
+
+	points[0] = stroker->current_face.cw;
+	points[1] = new_face.cw;
+	stroker->add_triangle (stroker->closure, points);
+    } else {
+	points[0] = stroker->current_face.ccw;
+	points[1] = stroker->current_face.cw;
+	points[2] = new_face.cw;
+	stroker->add_triangle (stroker->closure, points);
+
+	points[0] = stroker->current_face.ccw;
+	points[1] = new_face.cw;
+	points[2] = new_face.ccw;
+	stroker->add_triangle (stroker->closure, points);
+    }
+
+    stroker->current_face = new_face;
+    stroker->has_current_face = TRUE;
+    stroker->current_point = *point;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Dashed lines.  Cap each dash end, join around turns when on
+ */
+static cairo_status_t
+_cairo_stroker_line_to_dashed (void *closure,
+			       const cairo_point_t *p2)
+{
+    cairo_stroker_t *stroker = closure;
+    double mag, remain, step_length = 0;
+    double slope_dx, slope_dy;
+    double dx2, dy2;
+    cairo_stroke_face_t sub_start, sub_end;
+    cairo_point_t *p1 = &stroker->current_point;
+    cairo_slope_t dev_slope;
+    cairo_line_t segment;
+    cairo_bool_t fully_in_bounds;
+    cairo_status_t status;
+
+    stroker->has_initial_sub_path = stroker->dash.dash_starts_on;
+
+    if (p1->x == p2->x && p1->y == p2->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    fully_in_bounds = TRUE;
+    if (stroker->has_bounds &&
+	(! _cairo_box_contains_point (&stroker->bounds, p1) ||
+	 ! _cairo_box_contains_point (&stroker->bounds, p2)))
+    {
+	fully_in_bounds = FALSE;
+    }
+
+    _cairo_slope_init (&dev_slope, p1, p2);
+
+    slope_dx = _cairo_fixed_to_double (p2->x - p1->x);
+    slope_dy = _cairo_fixed_to_double (p2->y - p1->y);
+
+    if (! _compute_normalized_device_slope (&slope_dx, &slope_dy,
+					    stroker->ctm_inverse, &mag))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    remain = mag;
+    segment.p1 = *p1;
+    while (remain) {
+	step_length = MIN (stroker->dash.dash_remain, remain);
+	remain -= step_length;
+	dx2 = slope_dx * (mag - remain);
+	dy2 = slope_dy * (mag - remain);
+	cairo_matrix_transform_distance (stroker->ctm, &dx2, &dy2);
+	segment.p2.x = _cairo_fixed_from_double (dx2) + p1->x;
+	segment.p2.y = _cairo_fixed_from_double (dy2) + p1->y;
+
+	if (stroker->dash.dash_on &&
+	    (fully_in_bounds ||
+	     (! stroker->has_first_face && stroker->dash.dash_starts_on) ||
+	     _cairo_box_intersects_line_segment (&stroker->bounds, &segment)))
+	{
+	    status = _cairo_stroker_add_sub_edge (stroker,
+						  &segment.p1, &segment.p2,
+						  &dev_slope,
+						  slope_dx, slope_dy,
+						  &sub_start, &sub_end);
+	    if (unlikely (status))
+		return status;
+
+	    if (stroker->has_current_face)
+	    {
+		/* Join with final face from previous segment */
+		status = _cairo_stroker_join (stroker,
+					      &stroker->current_face,
+					      &sub_start);
+		if (unlikely (status))
+		    return status;
+
+		stroker->has_current_face = FALSE;
+	    }
+	    else if (! stroker->has_first_face &&
+		       stroker->dash.dash_starts_on)
+	    {
+		/* Save sub path's first face in case needed for closing join */
+		stroker->first_face = sub_start;
+		stroker->has_first_face = TRUE;
+	    }
+	    else
+	    {
+		/* Cap dash start if not connecting to a previous segment */
+		status = _cairo_stroker_add_leading_cap (stroker, &sub_start);
+		if (unlikely (status))
+		    return status;
+	    }
+
+	    if (remain) {
+		/* Cap dash end if not at end of segment */
+		status = _cairo_stroker_add_trailing_cap (stroker, &sub_end);
+		if (unlikely (status))
+		    return status;
+	    } else {
+		stroker->current_face = sub_end;
+		stroker->has_current_face = TRUE;
+	    }
+	} else {
+	    if (stroker->has_current_face) {
+		/* Cap final face from previous segment */
+		status = _cairo_stroker_add_trailing_cap (stroker,
+							  &stroker->current_face);
+		if (unlikely (status))
+		    return status;
+
+		stroker->has_current_face = FALSE;
+	    }
+	}
+
+	_cairo_stroker_dash_step (&stroker->dash, step_length);
+	segment.p1 = segment.p2;
+    }
+
+    if (stroker->dash.dash_on && ! stroker->has_current_face) {
+	/* This segment ends on a transition to dash_on, compute a new face
+	 * and add cap for the beginning of the next dash_on step.
+	 *
+	 * Note: this will create a degenerate cap if this is not the last line
+	 * in the path. Whether this behaviour is desirable or not is debatable.
+	 * On one side these degenerate caps can not be reproduced with regular
+	 * path stroking.
+	 * On the other hand, Acroread 7 also produces the degenerate caps.
+	 */
+	_compute_face (p2, &dev_slope,
+		       slope_dx, slope_dy,
+		       stroker,
+		       &stroker->current_face);
+
+	status = _cairo_stroker_add_leading_cap (stroker,
+						 &stroker->current_face);
+	if (unlikely (status))
+	    return status;
+
+	stroker->has_current_face = TRUE;
+    }
+
+    stroker->current_point = *p2;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_stroker_curve_to (void *closure,
+			 const cairo_point_t *b,
+			 const cairo_point_t *c,
+			 const cairo_point_t *d)
+{
+    cairo_stroker_t *stroker = closure;
+    cairo_spline_t spline;
+    cairo_line_join_t line_join_save;
+    cairo_stroke_face_t face;
+    double slope_dx, slope_dy;
+    cairo_spline_add_point_func_t line_to;
+    cairo_spline_add_point_func_t spline_to;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    line_to = stroker->dash.dashed ?
+	(cairo_spline_add_point_func_t) _cairo_stroker_line_to_dashed :
+	(cairo_spline_add_point_func_t) _cairo_stroker_line_to;
+
+    /* spline_to is only capable of rendering non-degenerate splines. */
+    spline_to = stroker->dash.dashed ?
+	(cairo_spline_add_point_func_t) _cairo_stroker_line_to_dashed :
+	(cairo_spline_add_point_func_t) _cairo_stroker_spline_to;
+
+    if (! _cairo_spline_init (&spline,
+			      spline_to,
+			      stroker,
+			      &stroker->current_point, b, c, d))
+    {
+	cairo_slope_t fallback_slope;
+	_cairo_slope_init (&fallback_slope, &stroker->current_point, d);
+	return line_to (closure, d, &fallback_slope);
+    }
+
+    /* If the line width is so small that the pen is reduced to a
+       single point, then we have nothing to do. */
+    if (stroker->pen.num_vertices <= 1)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Compute the initial face */
+    if (! stroker->dash.dashed || stroker->dash.dash_on) {
+	slope_dx = _cairo_fixed_to_double (spline.initial_slope.dx);
+	slope_dy = _cairo_fixed_to_double (spline.initial_slope.dy);
+	if (_compute_normalized_device_slope (&slope_dx, &slope_dy,
+					      stroker->ctm_inverse, NULL))
+	{
+	    _compute_face (&stroker->current_point,
+			   &spline.initial_slope,
+			   slope_dx, slope_dy,
+			   stroker, &face);
+	}
+	if (stroker->has_current_face) {
+	    status = _cairo_stroker_join (stroker,
+					  &stroker->current_face, &face);
+	    if (unlikely (status))
+		return status;
+	} else if (! stroker->has_first_face) {
+	    stroker->first_face = face;
+	    stroker->has_first_face = TRUE;
+	}
+
+	stroker->current_face = face;
+	stroker->has_current_face = TRUE;
+    }
+
+    /* Temporarily modify the stroker to use round joins to guarantee
+     * smooth stroked curves. */
+    line_join_save = stroker->style.line_join;
+    stroker->style.line_join = CAIRO_LINE_JOIN_ROUND;
+
+    status = _cairo_spline_decompose (&spline, stroker->tolerance);
+    if (unlikely (status))
+	return status;
+
+    /* And join the final face */
+    if (! stroker->dash.dashed || stroker->dash.dash_on) {
+	slope_dx = _cairo_fixed_to_double (spline.final_slope.dx);
+	slope_dy = _cairo_fixed_to_double (spline.final_slope.dy);
+	if (_compute_normalized_device_slope (&slope_dx, &slope_dy,
+					      stroker->ctm_inverse, NULL))
+	{
+	    _compute_face (&stroker->current_point,
+			   &spline.final_slope,
+			   slope_dx, slope_dy,
+			   stroker, &face);
+	}
+
+	status = _cairo_stroker_join (stroker, &stroker->current_face, &face);
+	if (unlikely (status))
+	    return status;
+
+	stroker->current_face = face;
+    }
+
+    stroker->style.line_join = line_join_save;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_stroker_close_path (void *closure)
+{
+    cairo_stroker_t *stroker = closure;
+    cairo_status_t status;
+
+    if (stroker->dash.dashed)
+	status = _cairo_stroker_line_to_dashed (stroker, &stroker->first_point);
+    else
+	status = _cairo_stroker_line_to (stroker, &stroker->first_point);
+    if (unlikely (status))
+	return status;
+
+    if (stroker->has_first_face && stroker->has_current_face) {
+	/* Join first and final faces of sub path */
+	status = _cairo_stroker_join (stroker,
+				      &stroker->current_face,
+				      &stroker->first_face);
+	if (unlikely (status))
+	    return status;
+    } else {
+	/* Cap the start and end of the sub path as needed */
+	status = _cairo_stroker_add_caps (stroker);
+	if (unlikely (status))
+	    return status;
+    }
+
+    stroker->has_initial_sub_path = FALSE;
+    stroker->has_first_face = FALSE;
+    stroker->has_current_face = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_path_fixed_stroke_to_shaper (cairo_path_fixed_t	*path,
+				    const cairo_stroke_style_t	*stroke_style,
+				    const cairo_matrix_t	*ctm,
+				    const cairo_matrix_t	*ctm_inverse,
+				    double		 tolerance,
+				    cairo_status_t (*add_triangle) (void *closure,
+								    const cairo_point_t triangle[3]),
+				    cairo_status_t (*add_triangle_fan) (void *closure,
+									const cairo_point_t *midpt,
+									const cairo_point_t *points,
+									int npoints),
+				    cairo_status_t (*add_convex_quad) (void *closure,
+								       const cairo_point_t quad[4]),
+				    void *closure)
+{
+    cairo_stroker_t stroker;
+    cairo_status_t status;
+
+    status = _cairo_stroker_init (&stroker, path, stroke_style,
+			          ctm, ctm_inverse, tolerance,
+				  NULL, 0);
+    if (unlikely (status))
+	return status;
+
+    stroker.add_triangle = add_triangle;
+    stroker.add_triangle_fan = add_triangle_fan;
+    stroker.add_convex_quad = add_convex_quad;
+    stroker.closure = closure;
+
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_stroker_move_to,
+					  stroker.dash.dashed ?
+					  _cairo_stroker_line_to_dashed :
+					  _cairo_stroker_line_to,
+					  _cairo_stroker_curve_to,
+					  _cairo_stroker_close_path,
+					  &stroker);
+
+    if (unlikely (status))
+	goto BAIL;
+
+    /* Cap the start and end of the final sub path as needed */
+    status = _cairo_stroker_add_caps (&stroker);
+
+BAIL:
+    _cairo_stroker_fini (&stroker);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_path_fixed_stroke_dashed_to_polygon (const cairo_path_fixed_t	*path,
+					    const cairo_stroke_style_t	*stroke_style,
+					    const cairo_matrix_t	*ctm,
+					    const cairo_matrix_t	*ctm_inverse,
+					    double		 tolerance,
+					    cairo_polygon_t *polygon)
+{
+    cairo_stroker_t stroker;
+    cairo_status_t status;
+
+    status = _cairo_stroker_init (&stroker, path, stroke_style,
+			          ctm, ctm_inverse, tolerance,
+				  polygon->limits, polygon->num_limits);
+    if (unlikely (status))
+	return status;
+
+    stroker.add_external_edge = _cairo_polygon_add_external_edge,
+    stroker.closure = polygon;
+
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_stroker_move_to,
+					  stroker.dash.dashed ?
+					  _cairo_stroker_line_to_dashed :
+					  _cairo_stroker_line_to,
+					  _cairo_stroker_curve_to,
+					  _cairo_stroker_close_path,
+					  &stroker);
+
+    if (unlikely (status))
+	goto BAIL;
+
+    /* Cap the start and end of the final sub path as needed */
+    status = _cairo_stroker_add_caps (&stroker);
+
+BAIL:
+    _cairo_stroker_fini (&stroker);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_path_fixed_stroke_polygon_to_traps (const cairo_path_fixed_t	*path,
+                                           const cairo_stroke_style_t	*stroke_style,
+                                           const cairo_matrix_t	*ctm,
+                                           const cairo_matrix_t	*ctm_inverse,
+                                           double		 tolerance,
+                                           cairo_traps_t	*traps)
+{
+    cairo_int_status_t status;
+    cairo_polygon_t polygon;
+
+    _cairo_polygon_init (&polygon, traps->limits, traps->num_limits);
+    status = _cairo_path_fixed_stroke_to_polygon (path,
+						  stroke_style,
+						  ctm,
+						  ctm_inverse,
+						  tolerance,
+						  &polygon);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _cairo_polygon_status (&polygon);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _cairo_bentley_ottmann_tessellate_polygon (traps, &polygon,
+							CAIRO_FILL_RULE_WINDING);
+
+BAIL:
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-path.c b/libs/cairo-1.16.0/src/cairo-path.c
new file mode 100644
index 0000000..566e86f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-path.c
@@ -0,0 +1,479 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-private.h"
+#include "cairo-backend-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-private.h"
+#include "cairo-path-fixed-private.h"
+
+/**
+ * SECTION:cairo-paths
+ * @Title: Paths
+ * @Short_Description: Creating paths and manipulating path data
+ *
+ * Paths are the most basic drawing tools and are primarily used to implicitly
+ * generate simple masks.
+ **/
+
+static const cairo_path_t _cairo_path_nil = { CAIRO_STATUS_NO_MEMORY, NULL, 0 };
+
+/* Closure for path interpretation. */
+typedef struct cairo_path_count {
+    int count;
+} cpc_t;
+
+static cairo_status_t
+_cpc_move_to (void *closure,
+	      const cairo_point_t *point)
+{
+    cpc_t *cpc = closure;
+
+    cpc->count += 2;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cpc_line_to (void *closure,
+	      const cairo_point_t *point)
+{
+    cpc_t *cpc = closure;
+
+    cpc->count += 2;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cpc_curve_to (void		*closure,
+	       const cairo_point_t	*p1,
+	       const cairo_point_t	*p2,
+	       const cairo_point_t	*p3)
+{
+    cpc_t *cpc = closure;
+
+    cpc->count += 4;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cpc_close_path (void *closure)
+{
+    cpc_t *cpc = closure;
+
+    cpc->count += 1;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static int
+_cairo_path_count (cairo_path_t		*path,
+		   cairo_path_fixed_t	*path_fixed,
+		   double		 tolerance,
+		   cairo_bool_t		 flatten)
+{
+    cairo_status_t status;
+    cpc_t cpc;
+
+    cpc.count = 0;
+
+    if (flatten) {
+	status = _cairo_path_fixed_interpret_flat (path_fixed,
+						   _cpc_move_to,
+						   _cpc_line_to,
+						   _cpc_close_path,
+						   &cpc,
+						   tolerance);
+    } else {
+	status = _cairo_path_fixed_interpret (path_fixed,
+					      _cpc_move_to,
+					      _cpc_line_to,
+					      _cpc_curve_to,
+					      _cpc_close_path,
+					      &cpc);
+    }
+
+    if (unlikely (status))
+	return -1;
+
+    return cpc.count;
+}
+
+/* Closure for path interpretation. */
+typedef struct cairo_path_populate {
+    cairo_path_data_t *data;
+    cairo_t *cr;
+} cpp_t;
+
+static cairo_status_t
+_cpp_move_to (void *closure,
+	      const cairo_point_t *point)
+{
+    cpp_t *cpp = closure;
+    cairo_path_data_t *data = cpp->data;
+    double x, y;
+
+    x = _cairo_fixed_to_double (point->x);
+    y = _cairo_fixed_to_double (point->y);
+
+    _cairo_backend_to_user (cpp->cr, &x, &y);
+
+    data->header.type = CAIRO_PATH_MOVE_TO;
+    data->header.length = 2;
+
+    /* We index from 1 to leave room for data->header */
+    data[1].point.x = x;
+    data[1].point.y = y;
+
+    cpp->data += data->header.length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cpp_line_to (void *closure,
+	      const cairo_point_t *point)
+{
+    cpp_t *cpp = closure;
+    cairo_path_data_t *data = cpp->data;
+    double x, y;
+
+    x = _cairo_fixed_to_double (point->x);
+    y = _cairo_fixed_to_double (point->y);
+
+    _cairo_backend_to_user (cpp->cr, &x, &y);
+
+    data->header.type = CAIRO_PATH_LINE_TO;
+    data->header.length = 2;
+
+    /* We index from 1 to leave room for data->header */
+    data[1].point.x = x;
+    data[1].point.y = y;
+
+    cpp->data += data->header.length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cpp_curve_to (void			*closure,
+	       const cairo_point_t	*p1,
+	       const cairo_point_t	*p2,
+	       const cairo_point_t	*p3)
+{
+    cpp_t *cpp = closure;
+    cairo_path_data_t *data = cpp->data;
+    double x1, y1;
+    double x2, y2;
+    double x3, y3;
+
+    x1 = _cairo_fixed_to_double (p1->x);
+    y1 = _cairo_fixed_to_double (p1->y);
+    _cairo_backend_to_user (cpp->cr, &x1, &y1);
+
+    x2 = _cairo_fixed_to_double (p2->x);
+    y2 = _cairo_fixed_to_double (p2->y);
+    _cairo_backend_to_user (cpp->cr, &x2, &y2);
+
+    x3 = _cairo_fixed_to_double (p3->x);
+    y3 = _cairo_fixed_to_double (p3->y);
+    _cairo_backend_to_user (cpp->cr, &x3, &y3);
+
+    data->header.type = CAIRO_PATH_CURVE_TO;
+    data->header.length = 4;
+
+    /* We index from 1 to leave room for data->header */
+    data[1].point.x = x1;
+    data[1].point.y = y1;
+
+    data[2].point.x = x2;
+    data[2].point.y = y2;
+
+    data[3].point.x = x3;
+    data[3].point.y = y3;
+
+    cpp->data += data->header.length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cpp_close_path (void *closure)
+{
+    cpp_t *cpp = closure;
+    cairo_path_data_t *data = cpp->data;
+
+    data->header.type = CAIRO_PATH_CLOSE_PATH;
+    data->header.length = 1;
+
+    cpp->data += data->header.length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_populate (cairo_path_t		*path,
+		      cairo_path_fixed_t	*path_fixed,
+		      cairo_t			*cr,
+		      cairo_bool_t		 flatten)
+{
+    cairo_status_t status;
+    cpp_t cpp;
+
+    cpp.data = path->data;
+    cpp.cr = cr;
+
+    if (flatten) {
+	status = _cairo_path_fixed_interpret_flat (path_fixed,
+						   _cpp_move_to,
+						   _cpp_line_to,
+						   _cpp_close_path,
+						   &cpp,
+						   cairo_get_tolerance (cr));
+    } else {
+	status = _cairo_path_fixed_interpret (path_fixed,
+					  _cpp_move_to,
+					  _cpp_line_to,
+					  _cpp_curve_to,
+					  _cpp_close_path,
+					  &cpp);
+    }
+
+    if (unlikely (status))
+	return status;
+
+    /* Sanity check the count */
+    assert (cpp.data - path->data == path->num_data);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_path_t *
+_cairo_path_create_in_error (cairo_status_t status)
+{
+    cairo_path_t *path;
+
+    /* special case NO_MEMORY so as to avoid allocations */
+    if (status == CAIRO_STATUS_NO_MEMORY)
+	return (cairo_path_t*) &_cairo_path_nil;
+
+    path = _cairo_malloc (sizeof (cairo_path_t));
+    if (unlikely (path == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_path_t*) &_cairo_path_nil;
+    }
+
+    path->num_data = 0;
+    path->data = NULL;
+    path->status = status;
+
+    return path;
+}
+
+static cairo_path_t *
+_cairo_path_create_internal (cairo_path_fixed_t *path_fixed,
+			     cairo_t		*cr,
+			     cairo_bool_t	 flatten)
+{
+    cairo_path_t *path;
+
+    path = _cairo_malloc (sizeof (cairo_path_t));
+    if (unlikely (path == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_path_t*) &_cairo_path_nil;
+    }
+
+    path->num_data = _cairo_path_count (path, path_fixed,
+					cairo_get_tolerance (cr),
+					flatten);
+    if (path->num_data < 0) {
+	free (path);
+	return (cairo_path_t*) &_cairo_path_nil;
+    }
+
+    if (path->num_data) {
+	path->data = _cairo_malloc_ab (path->num_data,
+				       sizeof (cairo_path_data_t));
+	if (unlikely (path->data == NULL)) {
+	    free (path);
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_path_t*) &_cairo_path_nil;
+	}
+
+	path->status = _cairo_path_populate (path, path_fixed, cr, flatten);
+    } else {
+	path->data = NULL;
+	path->status = CAIRO_STATUS_SUCCESS;
+    }
+
+    return path;
+}
+
+/**
+ * cairo_path_destroy:
+ * @path: a path previously returned by either cairo_copy_path() or
+ * cairo_copy_path_flat().
+ *
+ * Immediately releases all memory associated with @path. After a call
+ * to cairo_path_destroy() the @path pointer is no longer valid and
+ * should not be used further.
+ *
+ * Note: cairo_path_destroy() should only be called with a
+ * pointer to a #cairo_path_t returned by a cairo function. Any path
+ * that is created manually (ie. outside of cairo) should be destroyed
+ * manually as well.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_path_destroy (cairo_path_t *path)
+{
+    if (path == NULL || path == &_cairo_path_nil)
+	return;
+
+    free (path->data);
+
+    free (path);
+}
+slim_hidden_def (cairo_path_destroy);
+
+/**
+ * _cairo_path_create:
+ * @path: a fixed-point, device-space path to be converted and copied
+ * @cr: the current graphics context
+ *
+ * Creates a user-space #cairo_path_t copy of the given device-space
+ * @path. The @cr parameter provides the inverse CTM for the
+ * conversion.
+ *
+ * Return value: the new copy of the path. If there is insufficient
+ * memory a pointer to a special static nil #cairo_path_t will be
+ * returned instead with status==%CAIRO_STATUS_NO_MEMORY and
+ * data==%NULL.
+ **/
+cairo_path_t *
+_cairo_path_create (cairo_path_fixed_t	*path,
+		    cairo_t		*cr)
+{
+    return _cairo_path_create_internal (path, cr, FALSE);
+}
+
+/**
+ * _cairo_path_create_flat:
+ * @path: a fixed-point, device-space path to be flattened, converted and copied
+ * @cr: the current graphics context
+ *
+ * Creates a flattened, user-space #cairo_path_t copy of the given
+ * device-space @path. The @cr parameter provide the inverse CTM
+ * for the conversion, as well as the tolerance value to control the
+ * accuracy of the flattening.
+ *
+ * Return value: the flattened copy of the path. If there is insufficient
+ * memory a pointer to a special static nil #cairo_path_t will be
+ * returned instead with status==%CAIRO_STATUS_NO_MEMORY and
+ * data==%NULL.
+ **/
+cairo_path_t *
+_cairo_path_create_flat (cairo_path_fixed_t *path,
+			 cairo_t	    *cr)
+{
+    return _cairo_path_create_internal (path, cr, TRUE);
+}
+
+/**
+ * _cairo_path_append_to_context:
+ * @path: the path data to be appended
+ * @cr: a cairo context
+ *
+ * Append @path to the current path within @cr.
+ *
+ * Return value: %CAIRO_STATUS_INVALID_PATH_DATA if the data in @path
+ * is invalid, and %CAIRO_STATUS_SUCCESS otherwise.
+ **/
+cairo_status_t
+_cairo_path_append_to_context (const cairo_path_t	*path,
+			       cairo_t			*cr)
+{
+    const cairo_path_data_t *p, *end;
+
+    end = &path->data[path->num_data];
+    for (p = &path->data[0]; p < end; p += p->header.length) {
+	switch (p->header.type) {
+	case CAIRO_PATH_MOVE_TO:
+	    if (unlikely (p->header.length < 2))
+		return _cairo_error (CAIRO_STATUS_INVALID_PATH_DATA);
+
+	    cairo_move_to (cr, p[1].point.x, p[1].point.y);
+	    break;
+
+	case CAIRO_PATH_LINE_TO:
+	    if (unlikely (p->header.length < 2))
+		return _cairo_error (CAIRO_STATUS_INVALID_PATH_DATA);
+
+	    cairo_line_to (cr, p[1].point.x, p[1].point.y);
+	    break;
+
+	case CAIRO_PATH_CURVE_TO:
+	    if (unlikely (p->header.length < 4))
+		return _cairo_error (CAIRO_STATUS_INVALID_PATH_DATA);
+
+	    cairo_curve_to (cr,
+			    p[1].point.x, p[1].point.y,
+			    p[2].point.x, p[2].point.y,
+			    p[3].point.x, p[3].point.y);
+	    break;
+
+	case CAIRO_PATH_CLOSE_PATH:
+	    if (unlikely (p->header.length < 1))
+		return _cairo_error (CAIRO_STATUS_INVALID_PATH_DATA);
+
+	    cairo_close_path (cr);
+	    break;
+
+	default:
+	    return _cairo_error (CAIRO_STATUS_INVALID_PATH_DATA);
+	}
+
+	if (unlikely (cr->status))
+	    return cr->status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-pattern-inline.h b/libs/cairo-1.16.0/src/cairo-pattern-inline.h
new file mode 100644
index 0000000..97e8ea0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pattern-inline.h
@@ -0,0 +1,65 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_PATTERN_INLINE_H
+#define CAIRO_PATTERN_INLINE_H
+
+#include "cairo-pattern-private.h"
+
+#include "cairo-list-inline.h"
+
+CAIRO_BEGIN_DECLS
+
+static inline void
+_cairo_pattern_add_observer (cairo_pattern_t *pattern,
+			     cairo_pattern_observer_t *observer,
+			     void (*func) (cairo_pattern_observer_t *,
+					   cairo_pattern_t *,
+					   unsigned int))
+{
+    observer->notify = func;
+    cairo_list_add (&observer->link, &pattern->observers);
+}
+
+static inline cairo_surface_t *
+_cairo_pattern_get_source (const cairo_surface_pattern_t *pattern,
+			   cairo_rectangle_int_t *extents)
+{
+    return _cairo_surface_get_source (pattern->surface, extents);
+}
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_PATTERN_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-pattern-private.h b/libs/cairo-1.16.0/src/cairo-pattern-private.h
new file mode 100644
index 0000000..26d584e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pattern-private.h
@@ -0,0 +1,375 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_PATTERN_PRIVATE_H
+#define CAIRO_PATTERN_PRIVATE_H
+
+#include "cairo-error-private.h"
+#include "cairo-types-private.h"
+#include "cairo-list-private.h"
+#include "cairo-surface-private.h"
+
+#include <stdio.h> /* FILE* */
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_pattern_observer cairo_pattern_observer_t;
+
+enum {
+    CAIRO_PATTERN_NOTIFY_MATRIX = 0x1,
+    CAIRO_PATTERN_NOTIFY_FILTER = 0x2,
+    CAIRO_PATTERN_NOTIFY_EXTEND = 0x4,
+    CAIRO_PATTERN_NOTIFY_OPACITY = 0x9,
+};
+
+struct _cairo_pattern_observer {
+    void (*notify) (cairo_pattern_observer_t *,
+		    cairo_pattern_t *pattern,
+		    unsigned int flags);
+    cairo_list_t link;
+};
+
+struct _cairo_pattern {
+    cairo_reference_count_t	ref_count;
+    cairo_status_t		status;
+    cairo_user_data_array_t	user_data;
+    cairo_list_t		observers;
+
+    cairo_pattern_type_t	type;
+
+    cairo_filter_t		filter;
+    cairo_extend_t		extend;
+    cairo_bool_t		has_component_alpha;
+
+    cairo_matrix_t		matrix;
+    double			opacity;
+};
+
+struct _cairo_solid_pattern {
+    cairo_pattern_t base;
+    cairo_color_t color;
+};
+
+typedef struct _cairo_surface_pattern {
+    cairo_pattern_t base;
+
+    cairo_surface_t *surface;
+} cairo_surface_pattern_t;
+
+typedef struct _cairo_gradient_stop {
+    double offset;
+    cairo_color_stop_t color;
+} cairo_gradient_stop_t;
+
+typedef struct _cairo_gradient_pattern {
+    cairo_pattern_t base;
+
+    unsigned int	    n_stops;
+    unsigned int	    stops_size;
+    cairo_gradient_stop_t  *stops;
+    cairo_gradient_stop_t   stops_embedded[2];
+} cairo_gradient_pattern_t;
+
+typedef struct _cairo_linear_pattern {
+    cairo_gradient_pattern_t base;
+
+    cairo_point_double_t pd1;
+    cairo_point_double_t pd2;
+} cairo_linear_pattern_t;
+
+typedef struct _cairo_radial_pattern {
+    cairo_gradient_pattern_t base;
+
+    cairo_circle_double_t cd1;
+    cairo_circle_double_t cd2;
+} cairo_radial_pattern_t;
+
+typedef union {
+    cairo_gradient_pattern_t base;
+
+    cairo_linear_pattern_t linear;
+    cairo_radial_pattern_t radial;
+} cairo_gradient_pattern_union_t;
+
+/*
+ * A mesh patch is a tensor-product patch (bicubic Bezier surface
+ * patch). It has 16 control points. Each set of 4 points along the
+ * sides of the 4x4 grid of control points is a Bezier curve that
+ * defines one side of the patch. A color is assigned to each
+ * corner. The inner 4 points provide additional control over the
+ * shape and the color mapping.
+ *
+ * Cairo uses the same convention as the PDF Reference for numbering
+ * the points and side of the patch.
+ *
+ *
+ *                      Side 1
+ *
+ *          p[0][3] p[1][3] p[2][3] p[3][3]
+ * Side 0   p[0][2] p[1][2] p[2][2] p[3][2]  Side 2
+ *          p[0][1] p[1][1] p[2][1] p[3][1]
+ *          p[0][0] p[1][0] p[2][0] p[3][0]
+ *
+ *                      Side 3
+ *
+ *
+ *   Point            Color
+ *  -------------------------
+ *  points[0][0]    colors[0]
+ *  points[0][3]    colors[1]
+ *  points[3][3]    colors[2]
+ *  points[3][0]    colors[3]
+ */
+
+typedef struct _cairo_mesh_patch {
+    cairo_point_double_t points[4][4];
+    cairo_color_t colors[4];
+} cairo_mesh_patch_t;
+
+typedef struct _cairo_mesh_pattern {
+    cairo_pattern_t base;
+
+    cairo_array_t patches;
+    cairo_mesh_patch_t *current_patch;
+    int current_side;
+    cairo_bool_t has_control_point[4];
+    cairo_bool_t has_color[4];
+} cairo_mesh_pattern_t;
+
+typedef struct _cairo_raster_source_pattern {
+    cairo_pattern_t base;
+
+    cairo_content_t content;
+    cairo_rectangle_int_t extents;
+
+    cairo_raster_source_acquire_func_t acquire;
+    cairo_raster_source_release_func_t release;
+    cairo_raster_source_snapshot_func_t snapshot;
+    cairo_raster_source_copy_func_t copy;
+    cairo_raster_source_finish_func_t finish;
+
+    /* an explicit pre-allocated member in preference to the general user-data */
+    void *user_data;
+} cairo_raster_source_pattern_t;
+
+typedef union {
+    cairo_pattern_t		    base;
+
+    cairo_solid_pattern_t	    solid;
+    cairo_surface_pattern_t	    surface;
+    cairo_gradient_pattern_union_t  gradient;
+    cairo_mesh_pattern_t	    mesh;
+    cairo_raster_source_pattern_t   raster_source;
+} cairo_pattern_union_t;
+
+/* cairo-pattern.c */
+
+cairo_private cairo_pattern_t *
+_cairo_pattern_create_in_error (cairo_status_t status);
+
+cairo_private cairo_status_t
+_cairo_pattern_create_copy (cairo_pattern_t	  **pattern,
+			    const cairo_pattern_t  *other);
+
+cairo_private void
+_cairo_pattern_init (cairo_pattern_t *pattern,
+		     cairo_pattern_type_t type);
+
+cairo_private cairo_status_t
+_cairo_pattern_init_copy (cairo_pattern_t	*pattern,
+			  const cairo_pattern_t *other);
+
+cairo_private void
+_cairo_pattern_init_static_copy (cairo_pattern_t	*pattern,
+				 const cairo_pattern_t *other);
+
+cairo_private cairo_status_t
+_cairo_pattern_init_snapshot (cairo_pattern_t       *pattern,
+			      const cairo_pattern_t *other);
+
+cairo_private void
+_cairo_pattern_init_solid (cairo_solid_pattern_t	*pattern,
+			   const cairo_color_t		*color);
+
+cairo_private void
+_cairo_pattern_init_for_surface (cairo_surface_pattern_t *pattern,
+				 cairo_surface_t *surface);
+
+cairo_private void
+_cairo_pattern_fini (cairo_pattern_t *pattern);
+
+cairo_private cairo_pattern_t *
+_cairo_pattern_create_solid (const cairo_color_t	*color);
+
+cairo_private void
+_cairo_pattern_transform (cairo_pattern_t      *pattern,
+			  const cairo_matrix_t *ctm_inverse);
+
+cairo_private void
+_cairo_pattern_pretransform (cairo_pattern_t      *pattern,
+                             const cairo_matrix_t *ctm);
+
+cairo_private cairo_bool_t
+_cairo_pattern_is_opaque_solid (const cairo_pattern_t *pattern);
+
+cairo_private cairo_bool_t
+_cairo_pattern_is_opaque (const cairo_pattern_t *pattern,
+			  const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_bool_t
+_cairo_pattern_is_clear (const cairo_pattern_t *pattern);
+
+cairo_private cairo_bool_t
+_cairo_gradient_pattern_is_solid (const cairo_gradient_pattern_t *gradient,
+				  const cairo_rectangle_int_t *extents,
+				  cairo_color_t *color);
+
+cairo_private cairo_bool_t
+_cairo_pattern_is_constant_alpha (const cairo_pattern_t          *abstract_pattern,
+				  const cairo_rectangle_int_t    *extents,
+				  double                         *alpha);
+
+cairo_private void
+_cairo_gradient_pattern_fit_to_range (const cairo_gradient_pattern_t *gradient,
+				      double			      max_value,
+				      cairo_matrix_t                 *out_matrix,
+				      cairo_circle_double_t	      out_circle[2]);
+
+cairo_private cairo_bool_t
+_cairo_radial_pattern_focus_is_inside (const cairo_radial_pattern_t *radial);
+
+cairo_private void
+_cairo_gradient_pattern_box_to_parameter (const cairo_gradient_pattern_t *gradient,
+					  double x0, double y0,
+					  double x1, double y1,
+					  double tolerance,
+					  double out_range[2]);
+
+cairo_private void
+_cairo_gradient_pattern_interpolate (const cairo_gradient_pattern_t *gradient,
+				     double			     t,
+				     cairo_circle_double_t	    *out_circle);
+
+cairo_private void
+_cairo_pattern_alpha_range (const cairo_pattern_t *pattern,
+			    double                *out_min,
+			    double                *out_max);
+
+cairo_private cairo_bool_t
+_cairo_mesh_pattern_coord_box (const cairo_mesh_pattern_t *mesh,
+			       double                     *out_xmin,
+			       double                     *out_ymin,
+			       double                     *out_xmax,
+			       double                     *out_ymax);
+
+cairo_private void
+_cairo_pattern_sampled_area (const cairo_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents,
+			     cairo_rectangle_int_t *sample);
+
+cairo_private void
+_cairo_pattern_get_extents (const cairo_pattern_t	    *pattern,
+			    cairo_rectangle_int_t           *extents,
+			    cairo_bool_t                   is_vector);
+
+cairo_private cairo_int_status_t
+_cairo_pattern_get_ink_extents (const cairo_pattern_t	    *pattern,
+				cairo_rectangle_int_t       *extents);
+
+cairo_private unsigned long
+_cairo_pattern_hash (const cairo_pattern_t *pattern);
+
+cairo_private unsigned long
+_cairo_linear_pattern_hash (unsigned long hash,
+			    const cairo_linear_pattern_t *linear);
+
+cairo_private unsigned long
+_cairo_radial_pattern_hash (unsigned long hash,
+			    const cairo_radial_pattern_t *radial);
+
+cairo_private cairo_bool_t
+_cairo_linear_pattern_equal (const cairo_linear_pattern_t *a,
+			     const cairo_linear_pattern_t *b);
+
+cairo_private unsigned long
+_cairo_pattern_size (const cairo_pattern_t *pattern);
+
+cairo_private cairo_bool_t
+_cairo_radial_pattern_equal (const cairo_radial_pattern_t *a,
+			     const cairo_radial_pattern_t *b);
+
+cairo_private cairo_bool_t
+_cairo_pattern_equal (const cairo_pattern_t *a,
+		      const cairo_pattern_t *b);
+
+cairo_private cairo_filter_t
+_cairo_pattern_analyze_filter (const cairo_pattern_t *pattern);
+
+/* cairo-mesh-pattern-rasterizer.c */
+
+cairo_private void
+_cairo_mesh_pattern_rasterize (const cairo_mesh_pattern_t *mesh,
+			       void                       *data,
+			       int                         width,
+			       int                         height,
+			       int                         stride,
+			       double                      x_offset,
+			       double                      y_offset);
+
+cairo_private cairo_surface_t *
+_cairo_raster_source_pattern_acquire (const cairo_pattern_t *abstract_pattern,
+				      cairo_surface_t *target,
+				      const cairo_rectangle_int_t *extents);
+
+cairo_private void
+_cairo_raster_source_pattern_release (const cairo_pattern_t *abstract_pattern,
+				      cairo_surface_t *surface);
+
+cairo_private cairo_status_t
+_cairo_raster_source_pattern_snapshot (cairo_pattern_t *abstract_pattern);
+
+cairo_private cairo_status_t
+_cairo_raster_source_pattern_init_copy (cairo_pattern_t *pattern,
+					const cairo_pattern_t *other);
+
+cairo_private void
+_cairo_raster_source_pattern_finish (cairo_pattern_t *abstract_pattern);
+
+cairo_private void
+_cairo_debug_print_pattern (FILE *file, const cairo_pattern_t *pattern);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_PATTERN_PRIVATE */
diff --git a/libs/cairo-1.16.0/src/cairo-pattern.c b/libs/cairo-1.16.0/src/cairo-pattern.c
new file mode 100644
index 0000000..fde044a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pattern.c
@@ -0,0 +1,4791 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 David Reveman
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of David
+ * Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. David Reveman makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: David Reveman <davidr@novell.com>
+ *	    Keith Packard <keithp@keithp.com>
+ *	    Carl Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freed-pool-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-path-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-surface-snapshot-inline.h"
+
+#include <float.h>
+
+#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
+
+/**
+ * SECTION:cairo-pattern
+ * @Title: cairo_pattern_t
+ * @Short_Description: Sources for drawing
+ * @See_Also: #cairo_t, #cairo_surface_t
+ *
+ * #cairo_pattern_t is the paint with which cairo draws.
+ * The primary use of patterns is as the source for all cairo drawing
+ * operations, although they can also be used as masks, that is, as the
+ * brush too.
+ *
+ * A cairo pattern is created by using one of the many constructors,
+ * of the form
+ * <function>cairo_pattern_create_<emphasis>type</emphasis>()</function>
+ * or implicitly through
+ * <function>cairo_set_source_<emphasis>type</emphasis>()</function>
+ * functions.
+ **/
+
+static freed_pool_t freed_pattern_pool[5];
+
+static const cairo_solid_pattern_t _cairo_pattern_nil = {
+    {
+      CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+      CAIRO_STATUS_NO_MEMORY,		/* status */
+      { 0, 0, 0, NULL },		/* user_data */
+      { NULL, NULL },			/* observers */
+
+      CAIRO_PATTERN_TYPE_SOLID,		/* type */
+      CAIRO_FILTER_DEFAULT,		/* filter */
+      CAIRO_EXTEND_GRADIENT_DEFAULT,	/* extend */
+      FALSE,				/* has component alpha */
+      { 1., 0., 0., 1., 0., 0., },	/* matrix */
+      1.0                               /* opacity */
+    }
+};
+
+static const cairo_solid_pattern_t _cairo_pattern_nil_null_pointer = {
+    {
+      CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+      CAIRO_STATUS_NULL_POINTER,	/* status */
+      { 0, 0, 0, NULL },		/* user_data */
+      { NULL, NULL },			/* observers */
+
+      CAIRO_PATTERN_TYPE_SOLID,		/* type */
+      CAIRO_FILTER_DEFAULT,		/* filter */
+      CAIRO_EXTEND_GRADIENT_DEFAULT,	/* extend */
+      FALSE,				/* has component alpha */
+      { 1., 0., 0., 1., 0., 0., },	/* matrix */
+      1.0                               /* opacity */
+    }
+};
+
+const cairo_solid_pattern_t _cairo_pattern_black = {
+    {
+      CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+      CAIRO_STATUS_SUCCESS,		/* status */
+      { 0, 0, 0, NULL },		/* user_data */
+      { NULL, NULL },			/* observers */
+
+      CAIRO_PATTERN_TYPE_SOLID,		/* type */
+      CAIRO_FILTER_NEAREST,		/* filter */
+      CAIRO_EXTEND_REPEAT,		/* extend */
+      FALSE,				/* has component alpha */
+      { 1., 0., 0., 1., 0., 0., },	/* matrix */
+      1.0                               /* opacity */
+    },
+    { 0., 0., 0., 1., 0, 0, 0, 0xffff },/* color (double rgba, short rgba) */
+};
+
+const cairo_solid_pattern_t _cairo_pattern_clear = {
+    {
+      CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+      CAIRO_STATUS_SUCCESS,		/* status */
+      { 0, 0, 0, NULL },		/* user_data */
+      { NULL, NULL },			/* observers */
+
+      CAIRO_PATTERN_TYPE_SOLID,		/* type */
+      CAIRO_FILTER_NEAREST,		/* filter */
+      CAIRO_EXTEND_REPEAT,		/* extend */
+      FALSE,				/* has component alpha */
+      { 1., 0., 0., 1., 0., 0., },	/* matrix */
+      1.0                               /* opacity */
+    },
+    { 0., 0., 0., 0., 0, 0, 0, 0 },/* color (double rgba, short rgba) */
+};
+
+const cairo_solid_pattern_t _cairo_pattern_white = {
+    {
+      CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+      CAIRO_STATUS_SUCCESS,		/* status */
+      { 0, 0, 0, NULL },		/* user_data */
+      { NULL, NULL },			/* observers */
+
+      CAIRO_PATTERN_TYPE_SOLID,		/* type */
+      CAIRO_FILTER_NEAREST,		/* filter */
+      CAIRO_EXTEND_REPEAT,		/* extend */
+      FALSE,				/* has component alpha */
+      { 1., 0., 0., 1., 0., 0., },	/* matrix */
+      1.0                               /* opacity */
+    },
+    { 1., 1., 1., 1., 0xffff, 0xffff, 0xffff, 0xffff },/* color (double rgba, short rgba) */
+};
+
+static void
+_cairo_pattern_notify_observers (cairo_pattern_t *pattern,
+				 unsigned int flags)
+{
+    cairo_pattern_observer_t *pos;
+
+    cairo_list_foreach_entry (pos, cairo_pattern_observer_t, &pattern->observers, link)
+	pos->notify (pos, pattern, flags);
+}
+
+/**
+ * _cairo_pattern_set_error:
+ * @pattern: a pattern
+ * @status: a status value indicating an error
+ *
+ * Atomically sets pattern->status to @status and calls _cairo_error;
+ * Does nothing if status is %CAIRO_STATUS_SUCCESS.
+ *
+ * All assignments of an error status to pattern->status should happen
+ * through _cairo_pattern_set_error(). Note that due to the nature of
+ * the atomic operation, it is not safe to call this function on the nil
+ * objects.
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ **/
+static cairo_status_t
+_cairo_pattern_set_error (cairo_pattern_t *pattern,
+			  cairo_status_t status)
+{
+    if (status == CAIRO_STATUS_SUCCESS)
+	return status;
+
+    /* Don't overwrite an existing error. This preserves the first
+     * error, which is the most significant. */
+    _cairo_status_set_error (&pattern->status, status);
+
+    return _cairo_error (status);
+}
+
+void
+_cairo_pattern_init (cairo_pattern_t *pattern, cairo_pattern_type_t type)
+{
+#if HAVE_VALGRIND
+    switch (type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_solid_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_surface_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_linear_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_radial_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_mesh_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	break;
+    }
+#endif
+
+    pattern->type      = type;
+    pattern->status    = CAIRO_STATUS_SUCCESS;
+
+    /* Set the reference count to zero for on-stack patterns.
+     * Callers needs to explicitly increment the count for heap allocations. */
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 0);
+
+    _cairo_user_data_array_init (&pattern->user_data);
+
+    if (type == CAIRO_PATTERN_TYPE_SURFACE ||
+	type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	pattern->extend = CAIRO_EXTEND_SURFACE_DEFAULT;
+    else
+	pattern->extend = CAIRO_EXTEND_GRADIENT_DEFAULT;
+
+    pattern->filter    = CAIRO_FILTER_DEFAULT;
+    pattern->opacity   = 1.0;
+
+    pattern->has_component_alpha = FALSE;
+
+    cairo_matrix_init_identity (&pattern->matrix);
+
+    cairo_list_init (&pattern->observers);
+}
+
+static cairo_status_t
+_cairo_gradient_pattern_init_copy (cairo_gradient_pattern_t	  *pattern,
+				   const cairo_gradient_pattern_t *other)
+{
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (other->base.type == CAIRO_PATTERN_TYPE_LINEAR)
+    {
+	cairo_linear_pattern_t *dst = (cairo_linear_pattern_t *) pattern;
+	cairo_linear_pattern_t *src = (cairo_linear_pattern_t *) other;
+
+	*dst = *src;
+    }
+    else
+    {
+	cairo_radial_pattern_t *dst = (cairo_radial_pattern_t *) pattern;
+	cairo_radial_pattern_t *src = (cairo_radial_pattern_t *) other;
+
+	*dst = *src;
+    }
+
+    if (other->stops == other->stops_embedded)
+	pattern->stops = pattern->stops_embedded;
+    else if (other->stops)
+    {
+	pattern->stops = _cairo_malloc_ab (other->stops_size,
+					   sizeof (cairo_gradient_stop_t));
+	if (unlikely (pattern->stops == NULL)) {
+	    pattern->stops_size = 0;
+	    pattern->n_stops = 0;
+	    return _cairo_pattern_set_error (&pattern->base, CAIRO_STATUS_NO_MEMORY);
+	}
+
+	memcpy (pattern->stops, other->stops,
+		other->n_stops * sizeof (cairo_gradient_stop_t));
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_mesh_pattern_init_copy (cairo_mesh_pattern_t       *pattern,
+			       const cairo_mesh_pattern_t *other)
+{
+    *pattern = *other;
+
+    _cairo_array_init (&pattern->patches,  sizeof (cairo_mesh_patch_t));
+    return _cairo_array_append_multiple (&pattern->patches,
+					 _cairo_array_index_const (&other->patches, 0),
+					 _cairo_array_num_elements (&other->patches));
+}
+
+cairo_status_t
+_cairo_pattern_init_copy (cairo_pattern_t	*pattern,
+			  const cairo_pattern_t *other)
+{
+    cairo_status_t status;
+
+    if (other->status)
+	return _cairo_pattern_set_error (pattern, other->status);
+
+    switch (other->type) {
+    case CAIRO_PATTERN_TYPE_SOLID: {
+	cairo_solid_pattern_t *dst = (cairo_solid_pattern_t *) pattern;
+	cairo_solid_pattern_t *src = (cairo_solid_pattern_t *) other;
+
+	VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_solid_pattern_t)));
+
+	*dst = *src;
+    } break;
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_pattern_t *dst = (cairo_surface_pattern_t *) pattern;
+	cairo_surface_pattern_t *src = (cairo_surface_pattern_t *) other;
+
+	VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_surface_pattern_t)));
+
+	*dst = *src;
+	cairo_surface_reference (dst->surface);
+    } break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL: {
+	cairo_gradient_pattern_t *dst = (cairo_gradient_pattern_t *) pattern;
+	cairo_gradient_pattern_t *src = (cairo_gradient_pattern_t *) other;
+
+	if (other->type == CAIRO_PATTERN_TYPE_LINEAR) {
+	    VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_linear_pattern_t)));
+	} else {
+	    VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_radial_pattern_t)));
+	}
+
+	status = _cairo_gradient_pattern_init_copy (dst, src);
+	if (unlikely (status))
+	    return status;
+
+    } break;
+    case CAIRO_PATTERN_TYPE_MESH: {
+	cairo_mesh_pattern_t *dst = (cairo_mesh_pattern_t *) pattern;
+	cairo_mesh_pattern_t *src = (cairo_mesh_pattern_t *) other;
+
+	VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_mesh_pattern_t)));
+
+	status = _cairo_mesh_pattern_init_copy (dst, src);
+	if (unlikely (status))
+	    return status;
+
+    } break;
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE: {
+	status = _cairo_raster_source_pattern_init_copy (pattern, other);
+	if (unlikely (status))
+	    return status;
+    } break;
+    }
+
+    /* The reference count and user_data array are unique to the copy. */
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 0);
+    _cairo_user_data_array_init (&pattern->user_data);
+    cairo_list_init (&pattern->observers);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_pattern_init_static_copy (cairo_pattern_t	*pattern,
+				 const cairo_pattern_t *other)
+{
+    int size;
+
+    assert (other->status == CAIRO_STATUS_SUCCESS);
+
+    switch (other->type) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_PATTERN_TYPE_SOLID:
+	size = sizeof (cairo_solid_pattern_t);
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	size = sizeof (cairo_surface_pattern_t);
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	size = sizeof (cairo_linear_pattern_t);
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	size = sizeof (cairo_radial_pattern_t);
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	size = sizeof (cairo_mesh_pattern_t);
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	size = sizeof (cairo_raster_source_pattern_t);
+	break;
+    }
+
+    memcpy (pattern, other, size);
+
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 0);
+    _cairo_user_data_array_init (&pattern->user_data);
+    cairo_list_init (&pattern->observers);
+}
+
+cairo_status_t
+_cairo_pattern_init_snapshot (cairo_pattern_t       *pattern,
+			      const cairo_pattern_t *other)
+{
+    cairo_status_t status;
+
+    /* We don't bother doing any fancy copy-on-write implementation
+     * for the pattern's data. It's generally quite tiny. */
+    status = _cairo_pattern_init_copy (pattern, other);
+    if (unlikely (status))
+	return status;
+
+    /* But we do let the surface snapshot stuff be as fancy as it
+     * would like to be. */
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *surface_pattern =
+	    (cairo_surface_pattern_t *) pattern;
+	cairo_surface_t *surface = surface_pattern->surface;
+
+	surface_pattern->surface = _cairo_surface_snapshot (surface);
+
+	cairo_surface_destroy (surface);
+
+	status = surface_pattern->surface->status;
+    } else if (pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	status = _cairo_raster_source_pattern_snapshot (pattern);
+
+    return status;
+}
+
+void
+_cairo_pattern_fini (cairo_pattern_t *pattern)
+{
+    _cairo_user_data_array_fini (&pattern->user_data);
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_pattern_t *surface_pattern =
+	    (cairo_surface_pattern_t *) pattern;
+
+	cairo_surface_destroy (surface_pattern->surface);
+    } break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL: {
+	cairo_gradient_pattern_t *gradient =
+	    (cairo_gradient_pattern_t *) pattern;
+
+	if (gradient->stops && gradient->stops != gradient->stops_embedded)
+	    free (gradient->stops);
+    } break;
+    case CAIRO_PATTERN_TYPE_MESH: {
+	cairo_mesh_pattern_t *mesh =
+	    (cairo_mesh_pattern_t *) pattern;
+
+	_cairo_array_fini (&mesh->patches);
+    } break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	_cairo_raster_source_pattern_finish (pattern);
+	break;
+    }
+
+#if HAVE_VALGRIND
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_solid_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_surface_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_linear_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_radial_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_mesh_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	break;
+    }
+#endif
+}
+
+cairo_status_t
+_cairo_pattern_create_copy (cairo_pattern_t	  **pattern_out,
+			    const cairo_pattern_t  *other)
+{
+    cairo_pattern_t *pattern;
+    cairo_status_t status;
+
+    if (other->status)
+	return other->status;
+
+    switch (other->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	pattern = _cairo_malloc (sizeof (cairo_solid_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	pattern = _cairo_malloc (sizeof (cairo_surface_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	pattern = _cairo_malloc (sizeof (cairo_linear_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	pattern = _cairo_malloc (sizeof (cairo_radial_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	pattern = _cairo_malloc (sizeof (cairo_mesh_pattern_t));
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	pattern = _cairo_malloc (sizeof (cairo_raster_source_pattern_t));
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+    }
+    if (unlikely (pattern == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_pattern_init_copy (pattern, other);
+    if (unlikely (status)) {
+	free (pattern);
+	return status;
+    }
+
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->ref_count, 1);
+    *pattern_out = pattern;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_pattern_init_solid (cairo_solid_pattern_t *pattern,
+			   const cairo_color_t	 *color)
+{
+    _cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_SOLID);
+    pattern->color = *color;
+}
+
+void
+_cairo_pattern_init_for_surface (cairo_surface_pattern_t *pattern,
+				 cairo_surface_t	 *surface)
+{
+    if (surface->status) {
+	/* Force to solid to simplify the pattern_fini process. */
+	_cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_SOLID);
+	_cairo_pattern_set_error (&pattern->base, surface->status);
+	return;
+    }
+
+    _cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_SURFACE);
+
+    pattern->surface = cairo_surface_reference (surface);
+}
+
+static void
+_cairo_pattern_init_gradient (cairo_gradient_pattern_t *pattern,
+			      cairo_pattern_type_t     type)
+{
+    _cairo_pattern_init (&pattern->base, type);
+
+    pattern->n_stops    = 0;
+    pattern->stops_size = 0;
+    pattern->stops      = NULL;
+}
+
+static void
+_cairo_pattern_init_linear (cairo_linear_pattern_t *pattern,
+			    double x0, double y0, double x1, double y1)
+{
+    _cairo_pattern_init_gradient (&pattern->base, CAIRO_PATTERN_TYPE_LINEAR);
+
+    pattern->pd1.x = x0;
+    pattern->pd1.y = y0;
+    pattern->pd2.x = x1;
+    pattern->pd2.y = y1;
+}
+
+static void
+_cairo_pattern_init_radial (cairo_radial_pattern_t *pattern,
+			    double cx0, double cy0, double radius0,
+			    double cx1, double cy1, double radius1)
+{
+    _cairo_pattern_init_gradient (&pattern->base, CAIRO_PATTERN_TYPE_RADIAL);
+
+    pattern->cd1.center.x = cx0;
+    pattern->cd1.center.y = cy0;
+    pattern->cd1.radius   = fabs (radius0);
+    pattern->cd2.center.x = cx1;
+    pattern->cd2.center.y = cy1;
+    pattern->cd2.radius   = fabs (radius1);
+}
+
+cairo_pattern_t *
+_cairo_pattern_create_solid (const cairo_color_t *color)
+{
+    cairo_solid_pattern_t *pattern;
+
+    pattern =
+	_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_SOLID]);
+    if (unlikely (pattern == NULL)) {
+	/* None cached, need to create a new pattern. */
+	pattern = _cairo_malloc (sizeof (cairo_solid_pattern_t));
+	if (unlikely (pattern == NULL)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_pattern_t *) &_cairo_pattern_nil;
+	}
+    }
+
+    _cairo_pattern_init_solid (pattern, color);
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->base.ref_count, 1);
+
+    return &pattern->base;
+}
+
+cairo_pattern_t *
+_cairo_pattern_create_in_error (cairo_status_t status)
+{
+    cairo_pattern_t *pattern;
+
+    if (status == CAIRO_STATUS_NO_MEMORY)
+	return (cairo_pattern_t *)&_cairo_pattern_nil.base;
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    pattern = _cairo_pattern_create_solid (CAIRO_COLOR_BLACK);
+    if (pattern->status == CAIRO_STATUS_SUCCESS)
+	status = _cairo_pattern_set_error (pattern, status);
+
+    return pattern;
+}
+
+/**
+ * cairo_pattern_create_rgb:
+ * @red: red component of the color
+ * @green: green component of the color
+ * @blue: blue component of the color
+ *
+ * Creates a new #cairo_pattern_t corresponding to an opaque color.  The
+ * color components are floating point numbers in the range 0 to 1.
+ * If the values passed in are outside that range, they will be
+ * clamped.
+ *
+ * Return value: the newly created #cairo_pattern_t if successful, or
+ * an error pattern in case of no memory.  The caller owns the
+ * returned object and should call cairo_pattern_destroy() when
+ * finished with it.
+ *
+ * This function will always return a valid pointer, but if an error
+ * occurred the pattern status will be set to an error.  To inspect
+ * the status of a pattern use cairo_pattern_status().
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_pattern_create_rgb (double red, double green, double blue)
+{
+    return cairo_pattern_create_rgba (red, green, blue, 1.0);
+}
+slim_hidden_def (cairo_pattern_create_rgb);
+
+/**
+ * cairo_pattern_create_rgba:
+ * @red: red component of the color
+ * @green: green component of the color
+ * @blue: blue component of the color
+ * @alpha: alpha component of the color
+ *
+ * Creates a new #cairo_pattern_t corresponding to a translucent color.
+ * The color components are floating point numbers in the range 0 to
+ * 1.  If the values passed in are outside that range, they will be
+ * clamped.
+ *
+ * Return value: the newly created #cairo_pattern_t if successful, or
+ * an error pattern in case of no memory.  The caller owns the
+ * returned object and should call cairo_pattern_destroy() when
+ * finished with it.
+ *
+ * This function will always return a valid pointer, but if an error
+ * occurred the pattern status will be set to an error.  To inspect
+ * the status of a pattern use cairo_pattern_status().
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_pattern_create_rgba (double red, double green, double blue,
+			   double alpha)
+{
+    cairo_color_t color;
+
+    red   = _cairo_restrict_value (red,   0.0, 1.0);
+    green = _cairo_restrict_value (green, 0.0, 1.0);
+    blue  = _cairo_restrict_value (blue,  0.0, 1.0);
+    alpha = _cairo_restrict_value (alpha, 0.0, 1.0);
+
+    _cairo_color_init_rgba (&color, red, green, blue, alpha);
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    return _cairo_pattern_create_solid (&color);
+}
+slim_hidden_def (cairo_pattern_create_rgba);
+
+/**
+ * cairo_pattern_create_for_surface:
+ * @surface: the surface
+ *
+ * Create a new #cairo_pattern_t for the given surface.
+ *
+ * Return value: the newly created #cairo_pattern_t if successful, or
+ * an error pattern in case of no memory.  The caller owns the
+ * returned object and should call cairo_pattern_destroy() when
+ * finished with it.
+ *
+ * This function will always return a valid pointer, but if an error
+ * occurred the pattern status will be set to an error.  To inspect
+ * the status of a pattern use cairo_pattern_status().
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_pattern_create_for_surface (cairo_surface_t *surface)
+{
+    cairo_surface_pattern_t *pattern;
+
+    if (surface == NULL) {
+	_cairo_error_throw (CAIRO_STATUS_NULL_POINTER);
+	return (cairo_pattern_t*) &_cairo_pattern_nil_null_pointer;
+    }
+
+    if (surface->status)
+	return _cairo_pattern_create_in_error (surface->status);
+
+    pattern =
+	_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_SURFACE]);
+    if (unlikely (pattern == NULL)) {
+	pattern = _cairo_malloc (sizeof (cairo_surface_pattern_t));
+	if (unlikely (pattern == NULL)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_pattern_t *)&_cairo_pattern_nil.base;
+	}
+    }
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    _cairo_pattern_init_for_surface (pattern, surface);
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->base.ref_count, 1);
+
+    return &pattern->base;
+}
+slim_hidden_def (cairo_pattern_create_for_surface);
+
+/**
+ * cairo_pattern_create_linear:
+ * @x0: x coordinate of the start point
+ * @y0: y coordinate of the start point
+ * @x1: x coordinate of the end point
+ * @y1: y coordinate of the end point
+ *
+ * Create a new linear gradient #cairo_pattern_t along the line defined
+ * by (x0, y0) and (x1, y1).  Before using the gradient pattern, a
+ * number of color stops should be defined using
+ * cairo_pattern_add_color_stop_rgb() or
+ * cairo_pattern_add_color_stop_rgba().
+ *
+ * Note: The coordinates here are in pattern space. For a new pattern,
+ * pattern space is identical to user space, but the relationship
+ * between the spaces can be changed with cairo_pattern_set_matrix().
+ *
+ * Return value: the newly created #cairo_pattern_t if successful, or
+ * an error pattern in case of no memory.  The caller owns the
+ * returned object and should call cairo_pattern_destroy() when
+ * finished with it.
+ *
+ * This function will always return a valid pointer, but if an error
+ * occurred the pattern status will be set to an error.  To inspect
+ * the status of a pattern use cairo_pattern_status().
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_pattern_create_linear (double x0, double y0, double x1, double y1)
+{
+    cairo_linear_pattern_t *pattern;
+
+    pattern =
+	_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_LINEAR]);
+    if (unlikely (pattern == NULL)) {
+	pattern = _cairo_malloc (sizeof (cairo_linear_pattern_t));
+	if (unlikely (pattern == NULL)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_pattern_t *) &_cairo_pattern_nil.base;
+	}
+    }
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    _cairo_pattern_init_linear (pattern, x0, y0, x1, y1);
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->base.base.ref_count, 1);
+
+    return &pattern->base.base;
+}
+
+/**
+ * cairo_pattern_create_radial:
+ * @cx0: x coordinate for the center of the start circle
+ * @cy0: y coordinate for the center of the start circle
+ * @radius0: radius of the start circle
+ * @cx1: x coordinate for the center of the end circle
+ * @cy1: y coordinate for the center of the end circle
+ * @radius1: radius of the end circle
+ *
+ * Creates a new radial gradient #cairo_pattern_t between the two
+ * circles defined by (cx0, cy0, radius0) and (cx1, cy1, radius1).  Before using the
+ * gradient pattern, a number of color stops should be defined using
+ * cairo_pattern_add_color_stop_rgb() or
+ * cairo_pattern_add_color_stop_rgba().
+ *
+ * Note: The coordinates here are in pattern space. For a new pattern,
+ * pattern space is identical to user space, but the relationship
+ * between the spaces can be changed with cairo_pattern_set_matrix().
+ *
+ * Return value: the newly created #cairo_pattern_t if successful, or
+ * an error pattern in case of no memory.  The caller owns the
+ * returned object and should call cairo_pattern_destroy() when
+ * finished with it.
+ *
+ * This function will always return a valid pointer, but if an error
+ * occurred the pattern status will be set to an error.  To inspect
+ * the status of a pattern use cairo_pattern_status().
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_pattern_create_radial (double cx0, double cy0, double radius0,
+			     double cx1, double cy1, double radius1)
+{
+    cairo_radial_pattern_t *pattern;
+
+    pattern =
+	_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_RADIAL]);
+    if (unlikely (pattern == NULL)) {
+	pattern = _cairo_malloc (sizeof (cairo_radial_pattern_t));
+	if (unlikely (pattern == NULL)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_pattern_t *) &_cairo_pattern_nil.base;
+	}
+    }
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    _cairo_pattern_init_radial (pattern, cx0, cy0, radius0, cx1, cy1, radius1);
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->base.base.ref_count, 1);
+
+    return &pattern->base.base;
+}
+
+/* This order is specified in the diagram in the documentation for
+ * cairo_pattern_create_mesh() */
+static const int mesh_path_point_i[12] = { 0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 2, 1 };
+static const int mesh_path_point_j[12] = { 0, 1, 2, 3, 3, 3, 3, 2, 1, 0, 0, 0 };
+static const int mesh_control_point_i[4] = { 1, 1, 2, 2 };
+static const int mesh_control_point_j[4] = { 1, 2, 2, 1 };
+
+/**
+ * cairo_pattern_create_mesh:
+ *
+ * Create a new mesh pattern.
+ *
+ * Mesh patterns are tensor-product patch meshes (type 7 shadings in
+ * PDF). Mesh patterns may also be used to create other types of
+ * shadings that are special cases of tensor-product patch meshes such
+ * as Coons patch meshes (type 6 shading in PDF) and Gouraud-shaded
+ * triangle meshes (type 4 and 5 shadings in PDF).
+ *
+ * Mesh patterns consist of one or more tensor-product patches, which
+ * should be defined before using the mesh pattern. Using a mesh
+ * pattern with a partially defined patch as source or mask will put
+ * the context in an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * A tensor-product patch is defined by 4 Bézier curves (side 0, 1, 2,
+ * 3) and by 4 additional control points (P0, P1, P2, P3) that provide
+ * further control over the patch and complete the definition of the
+ * tensor-product patch. The corner C0 is the first point of the
+ * patch.
+ *
+ * Degenerate sides are permitted so straight lines may be used. A
+ * zero length line on one side may be used to create 3 sided patches.
+ *
+ * <informalexample><screen>
+ *       C1     Side 1       C2
+ *        +---------------+
+ *        |               |
+ *        |  P1       P2  |
+ *        |               |
+ * Side 0 |               | Side 2
+ *        |               |
+ *        |               |
+ *        |  P0       P3  |
+ *        |               |
+ *        +---------------+
+ *      C0     Side 3        C3
+ * </screen></informalexample>
+ *
+ * Each patch is constructed by first calling
+ * cairo_mesh_pattern_begin_patch(), then cairo_mesh_pattern_move_to()
+ * to specify the first point in the patch (C0). Then the sides are
+ * specified with calls to cairo_mesh_pattern_curve_to() and
+ * cairo_mesh_pattern_line_to().
+ *
+ * The four additional control points (P0, P1, P2, P3) in a patch can
+ * be specified with cairo_mesh_pattern_set_control_point().
+ *
+ * At each corner of the patch (C0, C1, C2, C3) a color may be
+ * specified with cairo_mesh_pattern_set_corner_color_rgb() or
+ * cairo_mesh_pattern_set_corner_color_rgba(). Any corner whose color
+ * is not explicitly specified defaults to transparent black.
+ *
+ * A Coons patch is a special case of the tensor-product patch where
+ * the control points are implicitly defined by the sides of the
+ * patch. The default value for any control point not specified is the
+ * implicit value for a Coons patch, i.e. if no control points are
+ * specified the patch is a Coons patch.
+ *
+ * A triangle is a special case of the tensor-product patch where the
+ * control points are implicitly defined by the sides of the patch,
+ * all the sides are lines and one of them has length 0, i.e. if the
+ * patch is specified using just 3 lines, it is a triangle. If the
+ * corners connected by the 0-length side have the same color, the
+ * patch is a Gouraud-shaded triangle.
+ *
+ * Patches may be oriented differently to the above diagram. For
+ * example the first point could be at the top left. The diagram only
+ * shows the relationship between the sides, corners and control
+ * points. Regardless of where the first point is located, when
+ * specifying colors, corner 0 will always be the first point, corner
+ * 1 the point between side 0 and side 1 etc.
+ *
+ * Calling cairo_mesh_pattern_end_patch() completes the current
+ * patch. If less than 4 sides have been defined, the first missing
+ * side is defined as a line from the current point to the first point
+ * of the patch (C0) and the other sides are degenerate lines from C0
+ * to C0. The corners between the added sides will all be coincident
+ * with C0 of the patch and their color will be set to be the same as
+ * the color of C0.
+ *
+ * Additional patches may be added with additional calls to
+ * cairo_mesh_pattern_begin_patch()/cairo_mesh_pattern_end_patch().
+ *
+ * <informalexample><programlisting>
+ * cairo_pattern_t *pattern = cairo_pattern_create_mesh ();
+ *
+ * /&ast; Add a Coons patch &ast;/
+ * cairo_mesh_pattern_begin_patch (pattern);
+ * cairo_mesh_pattern_move_to (pattern, 0, 0);
+ * cairo_mesh_pattern_curve_to (pattern, 30, -30,  60,  30, 100, 0);
+ * cairo_mesh_pattern_curve_to (pattern, 60,  30, 130,  60, 100, 100);
+ * cairo_mesh_pattern_curve_to (pattern, 60,  70,  30, 130,   0, 100);
+ * cairo_mesh_pattern_curve_to (pattern, 30,  70, -30,  30,   0, 0);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 3, 1, 1, 0);
+ * cairo_mesh_pattern_end_patch (pattern);
+ *
+ * /&ast; Add a Gouraud-shaded triangle &ast;/
+ * cairo_mesh_pattern_begin_patch (pattern)
+ * cairo_mesh_pattern_move_to (pattern, 100, 100);
+ * cairo_mesh_pattern_line_to (pattern, 130, 130);
+ * cairo_mesh_pattern_line_to (pattern, 130,  70);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
+ * cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
+ * cairo_mesh_pattern_end_patch (pattern)
+ * </programlisting></informalexample>
+ *
+ * When two patches overlap, the last one that has been added is drawn
+ * over the first one.
+ *
+ * When a patch folds over itself, points are sorted depending on
+ * their parameter coordinates inside the patch. The v coordinate
+ * ranges from 0 to 1 when moving from side 3 to side 1; the u
+ * coordinate ranges from 0 to 1 when going from side 0 to side
+ * 2. Points with higher v coordinate hide points with lower v
+ * coordinate. When two points have the same v coordinate, the one
+ * with higher u coordinate is above. This means that points nearer to
+ * side 1 are above points nearer to side 3; when this is not
+ * sufficient to decide which point is above (for example when both
+ * points belong to side 1 or side 3) points nearer to side 2 are
+ * above points nearer to side 0.
+ *
+ * For a complete definition of tensor-product patches, see the PDF
+ * specification (ISO32000), which describes the parametrization in
+ * detail.
+ *
+ * Note: The coordinates are always in pattern space. For a new
+ * pattern, pattern space is identical to user space, but the
+ * relationship between the spaces can be changed with
+ * cairo_pattern_set_matrix().
+ *
+ * Return value: the newly created #cairo_pattern_t if successful, or
+ * an error pattern in case of no memory. The caller owns the returned
+ * object and should call cairo_pattern_destroy() when finished with
+ * it.
+ *
+ * This function will always return a valid pointer, but if an error
+ * occurred the pattern status will be set to an error. To inspect the
+ * status of a pattern use cairo_pattern_status().
+ *
+ * Since: 1.12
+ **/
+cairo_pattern_t *
+cairo_pattern_create_mesh (void)
+{
+    cairo_mesh_pattern_t *pattern;
+
+    pattern =
+	_freed_pool_get (&freed_pattern_pool[CAIRO_PATTERN_TYPE_MESH]);
+    if (unlikely (pattern == NULL)) {
+	pattern = _cairo_malloc (sizeof (cairo_mesh_pattern_t));
+	if (unlikely (pattern == NULL)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_pattern_t *) &_cairo_pattern_nil.base;
+	}
+    }
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    _cairo_pattern_init (&pattern->base, CAIRO_PATTERN_TYPE_MESH);
+    _cairo_array_init (&pattern->patches, sizeof (cairo_mesh_patch_t));
+    pattern->current_patch = NULL;
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->base.ref_count, 1);
+
+    return &pattern->base;
+}
+
+/**
+ * cairo_pattern_reference:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Increases the reference count on @pattern by one. This prevents
+ * @pattern from being destroyed until a matching call to
+ * cairo_pattern_destroy() is made.
+ *
+ * Use cairo_pattern_get_reference_count() to get the number of
+ * references to a #cairo_pattern_t.
+ *
+ * Return value: the referenced #cairo_pattern_t.
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_pattern_reference (cairo_pattern_t *pattern)
+{
+    if (pattern == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
+	return pattern;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&pattern->ref_count));
+
+    _cairo_reference_count_inc (&pattern->ref_count);
+
+    return pattern;
+}
+slim_hidden_def (cairo_pattern_reference);
+
+/**
+ * cairo_pattern_get_type:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Get the pattern's type.  See #cairo_pattern_type_t for available
+ * types.
+ *
+ * Return value: The type of @pattern.
+ *
+ * Since: 1.2
+ **/
+cairo_pattern_type_t
+cairo_pattern_get_type (cairo_pattern_t *pattern)
+{
+    return pattern->type;
+}
+
+/**
+ * cairo_pattern_status:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Checks whether an error has previously occurred for this
+ * pattern.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, %CAIRO_STATUS_NO_MEMORY,
+ * %CAIRO_STATUS_INVALID_MATRIX, %CAIRO_STATUS_PATTERN_TYPE_MISMATCH,
+ * or %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_pattern_status (cairo_pattern_t *pattern)
+{
+    return pattern->status;
+}
+
+/**
+ * cairo_pattern_destroy:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Decreases the reference count on @pattern by one. If the result is
+ * zero, then @pattern and all associated resources are freed.  See
+ * cairo_pattern_reference().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_destroy (cairo_pattern_t *pattern)
+{
+    cairo_pattern_type_t type;
+
+    if (pattern == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&pattern->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&pattern->ref_count))
+	return;
+
+    type = pattern->type;
+    _cairo_pattern_fini (pattern);
+
+    /* maintain a small cache of freed patterns */
+    if (type < ARRAY_LENGTH (freed_pattern_pool))
+	_freed_pool_put (&freed_pattern_pool[type], pattern);
+    else
+	free (pattern);
+}
+slim_hidden_def (cairo_pattern_destroy);
+
+/**
+ * cairo_pattern_get_reference_count:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Returns the current reference count of @pattern.
+ *
+ * Return value: the current reference count of @pattern.  If the
+ * object is a nil object, 0 will be returned.
+ *
+ * Since: 1.4
+ **/
+unsigned int
+cairo_pattern_get_reference_count (cairo_pattern_t *pattern)
+{
+    if (pattern == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
+	return 0;
+
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&pattern->ref_count);
+}
+
+/**
+ * cairo_pattern_get_user_data:
+ * @pattern: a #cairo_pattern_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Return user data previously attached to @pattern using the
+ * specified key.  If no user data has been attached with the given
+ * key this function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ *
+ * Since: 1.4
+ **/
+void *
+cairo_pattern_get_user_data (cairo_pattern_t		 *pattern,
+			     const cairo_user_data_key_t *key)
+{
+    return _cairo_user_data_array_get_data (&pattern->user_data,
+					    key);
+}
+
+/**
+ * cairo_pattern_set_user_data:
+ * @pattern: a #cairo_pattern_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach to the #cairo_pattern_t
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * #cairo_t is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attach user data to @pattern.  To remove user data from a surface,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_set_user_data (cairo_pattern_t		 *pattern,
+			     const cairo_user_data_key_t *key,
+			     void			 *user_data,
+			     cairo_destroy_func_t	  destroy)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&pattern->ref_count))
+	return pattern->status;
+
+    return _cairo_user_data_array_set_data (&pattern->user_data,
+					    key, user_data, destroy);
+}
+
+/**
+ * cairo_mesh_pattern_begin_patch:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Begin a patch in a mesh pattern.
+ *
+ * After calling this function, the patch shape should be defined with
+ * cairo_mesh_pattern_move_to(), cairo_mesh_pattern_line_to() and
+ * cairo_mesh_pattern_curve_to().
+ *
+ * After defining the patch, cairo_mesh_pattern_end_patch() must be
+ * called before using @pattern as a source or mask.
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @pattern already has a
+ * current patch, it will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_begin_patch (cairo_pattern_t *pattern)
+{
+    cairo_mesh_pattern_t *mesh;
+    cairo_status_t status;
+    cairo_mesh_patch_t *current_patch;
+    int i;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    if (unlikely (mesh->current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    status = _cairo_array_allocate (&mesh->patches, 1, (void **) &current_patch);
+    if (unlikely (status)) {
+	_cairo_pattern_set_error (pattern, status);
+	return;
+    }
+
+    mesh->current_patch = current_patch;
+    mesh->current_side = -2; /* no current point */
+
+    for (i = 0; i < 4; i++)
+	mesh->has_control_point[i] = FALSE;
+
+    for (i = 0; i < 4; i++)
+	mesh->has_color[i] = FALSE;
+}
+
+
+static void
+_calc_control_point (cairo_mesh_patch_t *patch, int control_point)
+{
+    /* The Coons patch is a special case of the Tensor Product patch
+     * where the four control points are:
+     *
+     * P11 = S(1/3, 1/3)
+     * P12 = S(1/3, 2/3)
+     * P21 = S(2/3, 1/3)
+     * P22 = S(2/3, 2/3)
+     *
+     * where S is the gradient surface.
+     *
+     * When one or more control points has not been specified
+     * calculated the Coons patch control points are substituted. If
+     * no control points are specified the gradient will be a Coons
+     * patch.
+     *
+     * The equations below are defined in the ISO32000 standard.
+     */
+    cairo_point_double_t *p[3][3];
+    int cp_i, cp_j, i, j;
+
+    cp_i = mesh_control_point_i[control_point];
+    cp_j = mesh_control_point_j[control_point];
+
+    for (i = 0; i < 3; i++)
+	for (j = 0; j < 3; j++)
+	    p[i][j] = &patch->points[cp_i ^ i][cp_j ^ j];
+
+    p[0][0]->x = (- 4 * p[1][1]->x
+		  + 6 * (p[1][0]->x + p[0][1]->x)
+		  - 2 * (p[1][2]->x + p[2][1]->x)
+		  + 3 * (p[2][0]->x + p[0][2]->x)
+		  - 1 * p[2][2]->x) * (1. / 9);
+
+    p[0][0]->y = (- 4 * p[1][1]->y
+		  + 6 * (p[1][0]->y + p[0][1]->y)
+		  - 2 * (p[1][2]->y + p[2][1]->y)
+		  + 3 * (p[2][0]->y + p[0][2]->y)
+		  - 1 * p[2][2]->y) * (1. / 9);
+}
+
+/**
+ * cairo_mesh_pattern_end_patch:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Indicates the end of the current patch in a mesh pattern.
+ *
+ * If the current patch has less than 4 sides, it is closed with a
+ * straight line from the current point to the first point of the
+ * patch as if cairo_mesh_pattern_line_to() was used.
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @pattern has no current
+ * patch or the current patch has no current point, @pattern will be
+ * put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_end_patch (cairo_pattern_t *pattern)
+{
+    cairo_mesh_pattern_t *mesh;
+    cairo_mesh_patch_t *current_patch;
+    int i;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    current_patch = mesh->current_patch;
+    if (unlikely (!current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    if (unlikely (mesh->current_side == -2)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    while (mesh->current_side < 3) {
+	int corner_num;
+
+	cairo_mesh_pattern_line_to (pattern,
+				    current_patch->points[0][0].x,
+				    current_patch->points[0][0].y);
+
+	corner_num = mesh->current_side + 1;
+	if (corner_num < 4 && ! mesh->has_color[corner_num]) {
+	    current_patch->colors[corner_num] = current_patch->colors[0];
+	    mesh->has_color[corner_num] = TRUE;
+	}
+    }
+
+    for (i = 0; i < 4; i++) {
+	if (! mesh->has_control_point[i])
+	    _calc_control_point (current_patch, i);
+    }
+
+    for (i = 0; i < 4; i++) {
+	if (! mesh->has_color[i])
+	    current_patch->colors[i] = *CAIRO_COLOR_TRANSPARENT;
+    }
+
+    mesh->current_patch = NULL;
+}
+
+/**
+ * cairo_mesh_pattern_curve_to:
+ * @pattern: a #cairo_pattern_t
+ * @x1: the X coordinate of the first control point
+ * @y1: the Y coordinate of the first control point
+ * @x2: the X coordinate of the second control point
+ * @y2: the Y coordinate of the second control point
+ * @x3: the X coordinate of the end of the curve
+ * @y3: the Y coordinate of the end of the curve
+ *
+ * Adds a cubic Bézier spline to the current patch from the current
+ * point to position (@x3, @y3) in pattern-space coordinates, using
+ * (@x1, @y1) and (@x2, @y2) as the control points.
+ *
+ * If the current patch has no current point before the call to
+ * cairo_mesh_pattern_curve_to(), this function will behave as if
+ * preceded by a call to cairo_mesh_pattern_move_to(@pattern, @x1,
+ * @y1).
+ *
+ * After this call the current point will be (@x3, @y3).
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @pattern has no current
+ * patch or the current patch already has 4 sides, @pattern will be
+ * put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_curve_to (cairo_pattern_t *pattern,
+			     double x1, double y1,
+			     double x2, double y2,
+			     double x3, double y3)
+{
+    cairo_mesh_pattern_t *mesh;
+    int current_point, i, j;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    if (unlikely (!mesh->current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    if (unlikely (mesh->current_side == 3)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    if (mesh->current_side == -2)
+	cairo_mesh_pattern_move_to (pattern, x1, y1);
+
+    assert (mesh->current_side >= -1);
+    assert (pattern->status == CAIRO_STATUS_SUCCESS);
+
+    mesh->current_side++;
+
+    current_point = 3 * mesh->current_side;
+
+    current_point++;
+    i = mesh_path_point_i[current_point];
+    j = mesh_path_point_j[current_point];
+    mesh->current_patch->points[i][j].x = x1;
+    mesh->current_patch->points[i][j].y = y1;
+
+    current_point++;
+    i = mesh_path_point_i[current_point];
+    j = mesh_path_point_j[current_point];
+    mesh->current_patch->points[i][j].x = x2;
+    mesh->current_patch->points[i][j].y = y2;
+
+    current_point++;
+    if (current_point < 12) {
+	i = mesh_path_point_i[current_point];
+	j = mesh_path_point_j[current_point];
+	mesh->current_patch->points[i][j].x = x3;
+	mesh->current_patch->points[i][j].y = y3;
+    }
+}
+slim_hidden_def (cairo_mesh_pattern_curve_to);
+
+/**
+ * cairo_mesh_pattern_line_to:
+ * @pattern: a #cairo_pattern_t
+ * @x: the X coordinate of the end of the new line
+ * @y: the Y coordinate of the end of the new line
+ *
+ * Adds a line to the current patch from the current point to position
+ * (@x, @y) in pattern-space coordinates.
+ *
+ * If there is no current point before the call to
+ * cairo_mesh_pattern_line_to() this function will behave as
+ * cairo_mesh_pattern_move_to(@pattern, @x, @y).
+ *
+ * After this call the current point will be (@x, @y).
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @pattern has no current
+ * patch or the current patch already has 4 sides, @pattern will be
+ * put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_line_to (cairo_pattern_t *pattern,
+			    double x, double y)
+{
+    cairo_mesh_pattern_t *mesh;
+    cairo_point_double_t last_point;
+    int last_point_idx, i, j;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    if (unlikely (!mesh->current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    if (unlikely (mesh->current_side == 3)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    if (mesh->current_side == -2) {
+	cairo_mesh_pattern_move_to (pattern, x, y);
+	return;
+    }
+
+    last_point_idx = 3 * (mesh->current_side + 1);
+    i = mesh_path_point_i[last_point_idx];
+    j = mesh_path_point_j[last_point_idx];
+
+    last_point = mesh->current_patch->points[i][j];
+
+    cairo_mesh_pattern_curve_to (pattern,
+				 (2 * last_point.x + x) * (1. / 3),
+				 (2 * last_point.y + y) * (1. / 3),
+				 (last_point.x + 2 * x) * (1. / 3),
+				 (last_point.y + 2 * y) * (1. / 3),
+				 x, y);
+}
+slim_hidden_def (cairo_mesh_pattern_line_to);
+
+/**
+ * cairo_mesh_pattern_move_to:
+ * @pattern: a #cairo_pattern_t
+ * @x: the X coordinate of the new position
+ * @y: the Y coordinate of the new position
+ *
+ * Define the first point of the current patch in a mesh pattern.
+ *
+ * After this call the current point will be (@x, @y).
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @pattern has no current
+ * patch or the current patch already has at least one side, @pattern
+ * will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_move_to (cairo_pattern_t *pattern,
+			    double x, double y)
+{
+    cairo_mesh_pattern_t *mesh;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    if (unlikely (!mesh->current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    if (unlikely (mesh->current_side >= 0)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    mesh->current_side = -1;
+    mesh->current_patch->points[0][0].x = x;
+    mesh->current_patch->points[0][0].y = y;
+}
+slim_hidden_def (cairo_mesh_pattern_move_to);
+
+/**
+ * cairo_mesh_pattern_set_control_point:
+ * @pattern: a #cairo_pattern_t
+ * @point_num: the control point to set the position for
+ * @x: the X coordinate of the control point
+ * @y: the Y coordinate of the control point
+ *
+ * Set an internal control point of the current patch.
+ *
+ * Valid values for @point_num are from 0 to 3 and identify the
+ * control points as explained in cairo_pattern_create_mesh().
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @point_num is not valid,
+ * @pattern will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_INDEX.  If @pattern has no current patch,
+ * @pattern will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_set_control_point (cairo_pattern_t *pattern,
+				      unsigned int     point_num,
+				      double           x,
+				      double           y)
+{
+    cairo_mesh_pattern_t *mesh;
+    int i, j;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    if (unlikely (point_num > 3)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_INDEX);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    if (unlikely (!mesh->current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    i = mesh_control_point_i[point_num];
+    j = mesh_control_point_j[point_num];
+
+    mesh->current_patch->points[i][j].x = x;
+    mesh->current_patch->points[i][j].y = y;
+    mesh->has_control_point[point_num] = TRUE;
+}
+
+/* make room for at least one more color stop */
+static cairo_status_t
+_cairo_pattern_gradient_grow (cairo_gradient_pattern_t *pattern)
+{
+    cairo_gradient_stop_t *new_stops;
+    int old_size = pattern->stops_size;
+    int embedded_size = ARRAY_LENGTH (pattern->stops_embedded);
+    int new_size = 2 * MAX (old_size, 4);
+
+    /* we have a local buffer at pattern->stops_embedded.  try to fulfill the request
+     * from there. */
+    if (old_size < embedded_size) {
+	pattern->stops = pattern->stops_embedded;
+	pattern->stops_size = embedded_size;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    assert (pattern->n_stops <= pattern->stops_size);
+
+    if (pattern->stops == pattern->stops_embedded) {
+	new_stops = _cairo_malloc_ab (new_size, sizeof (cairo_gradient_stop_t));
+	if (new_stops)
+	    memcpy (new_stops, pattern->stops, old_size * sizeof (cairo_gradient_stop_t));
+    } else {
+	new_stops = _cairo_realloc_ab (pattern->stops,
+				       new_size,
+				       sizeof (cairo_gradient_stop_t));
+    }
+
+    if (unlikely (new_stops == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    pattern->stops = new_stops;
+    pattern->stops_size = new_size;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_mesh_pattern_set_corner_color (cairo_mesh_pattern_t *mesh,
+				      unsigned int     corner_num,
+				      double red, double green, double blue,
+				      double alpha)
+{
+    cairo_color_t *color;
+
+    assert (mesh->current_patch);
+    assert (corner_num <= 3);
+
+    color = &mesh->current_patch->colors[corner_num];
+    color->red   = red;
+    color->green = green;
+    color->blue  = blue;
+    color->alpha = alpha;
+
+    color->red_short   = _cairo_color_double_to_short (red);
+    color->green_short = _cairo_color_double_to_short (green);
+    color->blue_short  = _cairo_color_double_to_short (blue);
+    color->alpha_short = _cairo_color_double_to_short (alpha);
+
+    mesh->has_color[corner_num] = TRUE;
+}
+
+/**
+ * cairo_mesh_pattern_set_corner_color_rgb:
+ * @pattern: a #cairo_pattern_t
+ * @corner_num: the corner to set the color for
+ * @red: red component of color
+ * @green: green component of color
+ * @blue: blue component of color
+ *
+ * Sets the color of a corner of the current patch in a mesh pattern.
+ *
+ * The color is specified in the same way as in cairo_set_source_rgb().
+ *
+ * Valid values for @corner_num are from 0 to 3 and identify the
+ * corners as explained in cairo_pattern_create_mesh().
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @corner_num is not valid,
+ * @pattern will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_INDEX.  If @pattern has no current patch,
+ * @pattern will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_set_corner_color_rgb (cairo_pattern_t *pattern,
+					 unsigned int     corner_num,
+					 double red, double green, double blue)
+{
+    cairo_mesh_pattern_set_corner_color_rgba (pattern, corner_num, red, green, blue, 1.0);
+}
+
+/**
+ * cairo_mesh_pattern_set_corner_color_rgba:
+ * @pattern: a #cairo_pattern_t
+ * @corner_num: the corner to set the color for
+ * @red: red component of color
+ * @green: green component of color
+ * @blue: blue component of color
+ * @alpha: alpha component of color
+ *
+ * Sets the color of a corner of the current patch in a mesh pattern.
+ *
+ * The color is specified in the same way as in cairo_set_source_rgba().
+ *
+ * Valid values for @corner_num are from 0 to 3 and identify the
+ * corners as explained in cairo_pattern_create_mesh().
+ *
+ * Note: If @pattern is not a mesh pattern then @pattern will be put
+ * into an error status with a status of
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH. If @corner_num is not valid,
+ * @pattern will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_INDEX.  If @pattern has no current patch,
+ * @pattern will be put into an error status with a status of
+ * %CAIRO_STATUS_INVALID_MESH_CONSTRUCTION.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_mesh_pattern_set_corner_color_rgba (cairo_pattern_t *pattern,
+					  unsigned int     corner_num,
+					  double red, double green, double blue,
+					  double alpha)
+{
+    cairo_mesh_pattern_t *mesh;
+
+    if (unlikely (pattern->status))
+	return;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    if (unlikely (corner_num > 3)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_INDEX);
+	return;
+    }
+
+    mesh = (cairo_mesh_pattern_t *) pattern;
+    if (unlikely (!mesh->current_patch)) {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION);
+	return;
+    }
+
+    red    = _cairo_restrict_value (red,    0.0, 1.0);
+    green  = _cairo_restrict_value (green,  0.0, 1.0);
+    blue   = _cairo_restrict_value (blue,   0.0, 1.0);
+    alpha  = _cairo_restrict_value (alpha,  0.0, 1.0);
+
+    _cairo_mesh_pattern_set_corner_color (mesh, corner_num, red, green, blue, alpha);
+}
+slim_hidden_def (cairo_mesh_pattern_set_corner_color_rgba);
+
+static void
+_cairo_pattern_add_color_stop (cairo_gradient_pattern_t	*pattern,
+			       double			 offset,
+			       double			 red,
+			       double			 green,
+			       double			 blue,
+			       double			 alpha)
+{
+    cairo_gradient_stop_t *stops;
+    unsigned int	   i;
+
+    if (pattern->n_stops >= pattern->stops_size) {
+        cairo_status_t status = _cairo_pattern_gradient_grow (pattern);
+	if (unlikely (status)) {
+	    status = _cairo_pattern_set_error (&pattern->base, status);
+	    return;
+	}
+    }
+
+    stops = pattern->stops;
+
+    for (i = 0; i < pattern->n_stops; i++)
+    {
+	if (offset < stops[i].offset)
+	{
+	    memmove (&stops[i + 1], &stops[i],
+		     sizeof (cairo_gradient_stop_t) * (pattern->n_stops - i));
+
+	    break;
+	}
+    }
+
+    stops[i].offset = offset;
+
+    stops[i].color.red   = red;
+    stops[i].color.green = green;
+    stops[i].color.blue  = blue;
+    stops[i].color.alpha = alpha;
+
+    stops[i].color.red_short   = _cairo_color_double_to_short (red);
+    stops[i].color.green_short = _cairo_color_double_to_short (green);
+    stops[i].color.blue_short  = _cairo_color_double_to_short (blue);
+    stops[i].color.alpha_short = _cairo_color_double_to_short (alpha);
+
+    pattern->n_stops++;
+}
+
+/**
+ * cairo_pattern_add_color_stop_rgb:
+ * @pattern: a #cairo_pattern_t
+ * @offset: an offset in the range [0.0 .. 1.0]
+ * @red: red component of color
+ * @green: green component of color
+ * @blue: blue component of color
+ *
+ * Adds an opaque color stop to a gradient pattern. The offset
+ * specifies the location along the gradient's control vector. For
+ * example, a linear gradient's control vector is from (x0,y0) to
+ * (x1,y1) while a radial gradient's control vector is from any point
+ * on the start circle to the corresponding point on the end circle.
+ *
+ * The color is specified in the same way as in cairo_set_source_rgb().
+ *
+ * If two (or more) stops are specified with identical offset values,
+ * they will be sorted according to the order in which the stops are
+ * added, (stops added earlier will compare less than stops added
+ * later). This can be useful for reliably making sharp color
+ * transitions instead of the typical blend.
+ *
+ *
+ * Note: If the pattern is not a gradient pattern, (eg. a linear or
+ * radial pattern), then the pattern will be put into an error status
+ * with a status of %CAIRO_STATUS_PATTERN_TYPE_MISMATCH.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_add_color_stop_rgb (cairo_pattern_t *pattern,
+				  double	   offset,
+				  double	   red,
+				  double	   green,
+				  double	   blue)
+{
+    cairo_pattern_add_color_stop_rgba (pattern, offset, red, green, blue, 1.0);
+}
+
+/**
+ * cairo_pattern_add_color_stop_rgba:
+ * @pattern: a #cairo_pattern_t
+ * @offset: an offset in the range [0.0 .. 1.0]
+ * @red: red component of color
+ * @green: green component of color
+ * @blue: blue component of color
+ * @alpha: alpha component of color
+ *
+ * Adds a translucent color stop to a gradient pattern. The offset
+ * specifies the location along the gradient's control vector. For
+ * example, a linear gradient's control vector is from (x0,y0) to
+ * (x1,y1) while a radial gradient's control vector is from any point
+ * on the start circle to the corresponding point on the end circle.
+ *
+ * The color is specified in the same way as in cairo_set_source_rgba().
+ *
+ * If two (or more) stops are specified with identical offset values,
+ * they will be sorted according to the order in which the stops are
+ * added, (stops added earlier will compare less than stops added
+ * later). This can be useful for reliably making sharp color
+ * transitions instead of the typical blend.
+ *
+ * Note: If the pattern is not a gradient pattern, (eg. a linear or
+ * radial pattern), then the pattern will be put into an error status
+ * with a status of %CAIRO_STATUS_PATTERN_TYPE_MISMATCH.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_add_color_stop_rgba (cairo_pattern_t *pattern,
+				   double	   offset,
+				   double	   red,
+				   double	   green,
+				   double	   blue,
+				   double	   alpha)
+{
+    if (pattern->status)
+	return;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
+	pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
+    {
+	_cairo_pattern_set_error (pattern, CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	return;
+    }
+
+    offset = _cairo_restrict_value (offset, 0.0, 1.0);
+    red    = _cairo_restrict_value (red,    0.0, 1.0);
+    green  = _cairo_restrict_value (green,  0.0, 1.0);
+    blue   = _cairo_restrict_value (blue,   0.0, 1.0);
+    alpha  = _cairo_restrict_value (alpha,  0.0, 1.0);
+
+    _cairo_pattern_add_color_stop ((cairo_gradient_pattern_t *) pattern,
+				   offset, red, green, blue, alpha);
+}
+slim_hidden_def (cairo_pattern_add_color_stop_rgba);
+
+/**
+ * cairo_pattern_set_matrix:
+ * @pattern: a #cairo_pattern_t
+ * @matrix: a #cairo_matrix_t
+ *
+ * Sets the pattern's transformation matrix to @matrix. This matrix is
+ * a transformation from user space to pattern space.
+ *
+ * When a pattern is first created it always has the identity matrix
+ * for its transformation matrix, which means that pattern space is
+ * initially identical to user space.
+ *
+ * Important: Please note that the direction of this transformation
+ * matrix is from user space to pattern space. This means that if you
+ * imagine the flow from a pattern to user space (and on to device
+ * space), then coordinates in that flow will be transformed by the
+ * inverse of the pattern matrix.
+ *
+ * For example, if you want to make a pattern appear twice as large as
+ * it does by default the correct code to use is:
+ *
+ * <informalexample><programlisting>
+ * cairo_matrix_init_scale (&amp;matrix, 0.5, 0.5);
+ * cairo_pattern_set_matrix (pattern, &amp;matrix);
+ * </programlisting></informalexample>
+ *
+ * Meanwhile, using values of 2.0 rather than 0.5 in the code above
+ * would cause the pattern to appear at half of its default size.
+ *
+ * Also, please note the discussion of the user-space locking
+ * semantics of cairo_set_source().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_set_matrix (cairo_pattern_t      *pattern,
+			  const cairo_matrix_t *matrix)
+{
+    cairo_matrix_t inverse;
+    cairo_status_t status;
+
+    if (pattern->status)
+	return;
+
+    if (memcmp (&pattern->matrix, matrix, sizeof (cairo_matrix_t)) == 0)
+	return;
+
+    pattern->matrix = *matrix;
+    _cairo_pattern_notify_observers (pattern, CAIRO_PATTERN_NOTIFY_MATRIX);
+
+    inverse = *matrix;
+    status = cairo_matrix_invert (&inverse);
+    if (unlikely (status))
+	status = _cairo_pattern_set_error (pattern, status);
+}
+slim_hidden_def (cairo_pattern_set_matrix);
+
+/**
+ * cairo_pattern_get_matrix:
+ * @pattern: a #cairo_pattern_t
+ * @matrix: return value for the matrix
+ *
+ * Stores the pattern's transformation matrix into @matrix.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_get_matrix (cairo_pattern_t *pattern, cairo_matrix_t *matrix)
+{
+    *matrix = pattern->matrix;
+}
+
+/**
+ * cairo_pattern_set_filter:
+ * @pattern: a #cairo_pattern_t
+ * @filter: a #cairo_filter_t describing the filter to use for resizing
+ * the pattern
+ *
+ * Sets the filter to be used for resizing when using this pattern.
+ * See #cairo_filter_t for details on each filter.
+ *
+ * * Note that you might want to control filtering even when you do not
+ * have an explicit #cairo_pattern_t object, (for example when using
+ * cairo_set_source_surface()). In these cases, it is convenient to
+ * use cairo_get_source() to get access to the pattern that cairo
+ * creates implicitly. For example:
+ *
+ * <informalexample><programlisting>
+ * cairo_set_source_surface (cr, image, x, y);
+ * cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST);
+ * </programlisting></informalexample>
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_set_filter (cairo_pattern_t *pattern, cairo_filter_t filter)
+{
+    if (pattern->status)
+	return;
+
+    pattern->filter = filter;
+    _cairo_pattern_notify_observers (pattern, CAIRO_PATTERN_NOTIFY_FILTER);
+}
+
+/**
+ * cairo_pattern_get_filter:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Gets the current filter for a pattern.  See #cairo_filter_t
+ * for details on each filter.
+ *
+ * Return value: the current filter used for resizing the pattern.
+ *
+ * Since: 1.0
+ **/
+cairo_filter_t
+cairo_pattern_get_filter (cairo_pattern_t *pattern)
+{
+    return pattern->filter;
+}
+
+/**
+ * cairo_pattern_set_extend:
+ * @pattern: a #cairo_pattern_t
+ * @extend: a #cairo_extend_t describing how the area outside of the
+ * pattern will be drawn
+ *
+ * Sets the mode to be used for drawing outside the area of a pattern.
+ * See #cairo_extend_t for details on the semantics of each extend
+ * strategy.
+ *
+ * The default extend mode is %CAIRO_EXTEND_NONE for surface patterns
+ * and %CAIRO_EXTEND_PAD for gradient patterns.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_pattern_set_extend (cairo_pattern_t *pattern, cairo_extend_t extend)
+{
+    if (pattern->status)
+	return;
+
+    pattern->extend = extend;
+    _cairo_pattern_notify_observers (pattern, CAIRO_PATTERN_NOTIFY_EXTEND);
+}
+
+/**
+ * cairo_pattern_get_extend:
+ * @pattern: a #cairo_pattern_t
+ *
+ * Gets the current extend mode for a pattern.  See #cairo_extend_t
+ * for details on the semantics of each extend strategy.
+ *
+ * Return value: the current extend strategy used for drawing the
+ * pattern.
+ *
+ * Since: 1.0
+ **/
+cairo_extend_t
+cairo_pattern_get_extend (cairo_pattern_t *pattern)
+{
+    return pattern->extend;
+}
+slim_hidden_def (cairo_pattern_get_extend);
+
+void
+_cairo_pattern_pretransform (cairo_pattern_t	*pattern,
+			     const cairo_matrix_t  *ctm)
+{
+    if (pattern->status)
+	return;
+
+    cairo_matrix_multiply (&pattern->matrix, &pattern->matrix, ctm);
+}
+
+void
+_cairo_pattern_transform (cairo_pattern_t	*pattern,
+			  const cairo_matrix_t  *ctm_inverse)
+{
+    if (pattern->status)
+	return;
+
+    cairo_matrix_multiply (&pattern->matrix, ctm_inverse, &pattern->matrix);
+}
+
+static cairo_bool_t
+_linear_pattern_is_degenerate (const cairo_linear_pattern_t *linear)
+{
+    return fabs (linear->pd1.x - linear->pd2.x) < DBL_EPSILON &&
+	   fabs (linear->pd1.y - linear->pd2.y) < DBL_EPSILON;
+}
+
+static cairo_bool_t
+_radial_pattern_is_degenerate (const cairo_radial_pattern_t *radial)
+{
+    /* A radial pattern is considered degenerate if it can be
+     * represented as a solid or clear pattern.  This corresponds to
+     * one of the two cases:
+     *
+     * 1) The radii are both very small:
+     *      |dr| < DBL_EPSILON && min (r0, r1) < DBL_EPSILON
+     *
+     * 2) The two circles have about the same radius and are very
+     *    close to each other (approximately a cylinder gradient that
+     *    doesn't move with the parameter):
+     *      |dr| < DBL_EPSILON && max (|dx|, |dy|) < 2 * DBL_EPSILON
+     *
+     * These checks are consistent with the assumptions used in
+     * _cairo_radial_pattern_box_to_parameter ().
+     */
+
+    return fabs (radial->cd1.radius - radial->cd2.radius) < DBL_EPSILON &&
+	(MIN (radial->cd1.radius, radial->cd2.radius) < DBL_EPSILON ||
+	 MAX (fabs (radial->cd1.center.x - radial->cd2.center.x),
+	      fabs (radial->cd1.center.y - radial->cd2.center.y)) < 2 * DBL_EPSILON);
+}
+
+static void
+_cairo_linear_pattern_box_to_parameter (const cairo_linear_pattern_t *linear,
+					double x0, double y0,
+					double x1, double y1,
+					double range[2])
+{
+    double t0, tdx, tdy;
+    double p1x, p1y, pdx, pdy, invsqnorm;
+
+    assert (! _linear_pattern_is_degenerate (linear));
+
+    /*
+     * Linear gradients are othrogonal to the line passing through
+     * their extremes. Because of convexity, the parameter range can
+     * be computed as the convex hull (one the real line) of the
+     * parameter values of the 4 corners of the box.
+     *
+     * The parameter value t for a point (x,y) can be computed as:
+     *
+     *   t = (p2 - p1) . (x,y) / |p2 - p1|^2
+     *
+     * t0  is the t value for the top left corner
+     * tdx is the difference between left and right corners
+     * tdy is the difference between top and bottom corners
+     */
+
+    p1x = linear->pd1.x;
+    p1y = linear->pd1.y;
+    pdx = linear->pd2.x - p1x;
+    pdy = linear->pd2.y - p1y;
+    invsqnorm = 1.0 / (pdx * pdx + pdy * pdy);
+    pdx *= invsqnorm;
+    pdy *= invsqnorm;
+
+    t0 = (x0 - p1x) * pdx + (y0 - p1y) * pdy;
+    tdx = (x1 - x0) * pdx;
+    tdy = (y1 - y0) * pdy;
+
+    /*
+     * Because of the linearity of the t value, tdx can simply be
+     * added the t0 to move along the top edge. After this, range[0]
+     * and range[1] represent the parameter range for the top edge, so
+     * extending it to include the whole box simply requires adding
+     * tdy to the correct extreme.
+     */
+
+    range[0] = range[1] = t0;
+    if (tdx < 0)
+	range[0] += tdx;
+    else
+	range[1] += tdx;
+
+    if (tdy < 0)
+	range[0] += tdy;
+    else
+	range[1] += tdy;
+}
+
+static cairo_bool_t
+_extend_range (double range[2], double value, cairo_bool_t valid)
+{
+    if (!valid)
+	range[0] = range[1] = value;
+    else if (value < range[0])
+	range[0] = value;
+    else if (value > range[1])
+	range[1] = value;
+
+    return TRUE;
+}
+
+/*
+ * _cairo_radial_pattern_focus_is_inside:
+ *
+ * Returns %TRUE if and only if the focus point exists and is
+ * contained in one of the two extreme circles. This condition is
+ * equivalent to one of the two extreme circles being completely
+ * contained in the other one.
+ *
+ * Note: if the focus is on the border of one of the two circles (in
+ * which case the circles are tangent in the focus point), it is not
+ * considered as contained in the circle, hence this function returns
+ * %FALSE.
+ *
+ */
+cairo_bool_t
+_cairo_radial_pattern_focus_is_inside (const cairo_radial_pattern_t *radial)
+{
+    double cx, cy, cr, dx, dy, dr;
+
+    cx = radial->cd1.center.x;
+    cy = radial->cd1.center.y;
+    cr = radial->cd1.radius;
+    dx = radial->cd2.center.x - cx;
+    dy = radial->cd2.center.y - cy;
+    dr = radial->cd2.radius   - cr;
+
+    return dx*dx + dy*dy < dr*dr;
+}
+
+static void
+_cairo_radial_pattern_box_to_parameter (const cairo_radial_pattern_t *radial,
+					double x0, double y0,
+					double x1, double y1,
+					double tolerance,
+					double range[2])
+{
+    double cx, cy, cr, dx, dy, dr;
+    double a, x_focus, y_focus;
+    double mindr, minx, miny, maxx, maxy;
+    cairo_bool_t valid;
+
+    assert (! _radial_pattern_is_degenerate (radial));
+    assert (x0 < x1);
+    assert (y0 < y1);
+
+    tolerance = MAX (tolerance, DBL_EPSILON);
+
+    range[0] = range[1] = 0;
+    valid = FALSE;
+
+    x_focus = y_focus = 0; /* silence gcc */
+
+    cx = radial->cd1.center.x;
+    cy = radial->cd1.center.y;
+    cr = radial->cd1.radius;
+    dx = radial->cd2.center.x - cx;
+    dy = radial->cd2.center.y - cy;
+    dr = radial->cd2.radius   - cr;
+
+    /* translate by -(cx, cy) to simplify computations */
+    x0 -= cx;
+    y0 -= cy;
+    x1 -= cx;
+    y1 -= cy;
+
+    /* enlarge boundaries slightly to avoid rounding problems in the
+     * parameter range computation */
+    x0 -= DBL_EPSILON;
+    y0 -= DBL_EPSILON;
+    x1 += DBL_EPSILON;
+    y1 += DBL_EPSILON;
+
+    /* enlarge boundaries even more to avoid rounding problems when
+     * testing if a point belongs to the box */
+    minx = x0 - DBL_EPSILON;
+    miny = y0 - DBL_EPSILON;
+    maxx = x1 + DBL_EPSILON;
+    maxy = y1 + DBL_EPSILON;
+
+    /* we dont' allow negative radiuses, so we will be checking that
+     * t*dr >= mindr to consider t valid */
+    mindr = -(cr + DBL_EPSILON);
+
+    /*
+     * After the previous transformations, the start circle is
+     * centered in the origin and has radius cr. A 1-unit change in
+     * the t parameter corresponds to dx,dy,dr changes in the x,y,r of
+     * the circle (center coordinates, radius).
+     *
+     * To compute the minimum range needed to correctly draw the
+     * pattern, we start with an empty range and extend it to include
+     * the circles touching the bounding box or within it.
+     */
+
+    /*
+     * Focus, the point where the circle has radius == 0.
+     *
+     * r = cr + t * dr = 0
+     * t = -cr / dr
+     *
+     * If the radius is constant (dr == 0) there is no focus (the
+     * gradient represents a cylinder instead of a cone).
+     */
+    if (fabs (dr) >= DBL_EPSILON) {
+	double t_focus;
+
+	t_focus = -cr / dr;
+	x_focus = t_focus * dx;
+	y_focus = t_focus * dy;
+	if (minx <= x_focus && x_focus <= maxx &&
+	    miny <= y_focus && y_focus <= maxy)
+	{
+	    valid = _extend_range (range, t_focus, valid);
+	}
+    }
+
+    /*
+     * Circles externally tangent to box edges.
+     *
+     * All circles have center in (dx, dy) * t
+     *
+     * If the circle is tangent to the line defined by the edge of the
+     * box, then at least one of the following holds true:
+     *
+     *   (dx*t) + (cr + dr*t) == x0 (left   edge)
+     *   (dx*t) - (cr + dr*t) == x1 (right  edge)
+     *   (dy*t) + (cr + dr*t) == y0 (top    edge)
+     *   (dy*t) - (cr + dr*t) == y1 (bottom edge)
+     *
+     * The solution is only valid if the tangent point is actually on
+     * the edge, i.e. if its y coordinate is in [y0,y1] for left/right
+     * edges and if its x coordinate is in [x0,x1] for top/bottom
+     * edges.
+     *
+     * For the first equation:
+     *
+     *   (dx + dr) * t = x0 - cr
+     *   t = (x0 - cr) / (dx + dr)
+     *   y = dy * t
+     *
+     * in the code this becomes:
+     *
+     *   t_edge = (num) / (den)
+     *   v = (delta) * t_edge
+     *
+     * If the denominator in t is 0, the pattern is tangent to a line
+     * parallel to the edge under examination. The corner-case where
+     * the boundary line is the same as the edge is handled by the
+     * focus point case and/or by the a==0 case.
+     */
+#define T_EDGE(num,den,delta,lower,upper)				\
+    if (fabs (den) >= DBL_EPSILON) {					\
+	double t_edge, v;						\
+									\
+	t_edge = (num) / (den);						\
+	v = t_edge * (delta);						\
+	if (t_edge * dr >= mindr && (lower) <= v && v <= (upper))	\
+	    valid = _extend_range (range, t_edge, valid);		\
+    }
+
+    /* circles tangent (externally) to left/right/top/bottom edge */
+    T_EDGE (x0 - cr, dx + dr, dy, miny, maxy);
+    T_EDGE (x1 + cr, dx - dr, dy, miny, maxy);
+    T_EDGE (y0 - cr, dy + dr, dx, minx, maxx);
+    T_EDGE (y1 + cr, dy - dr, dx, minx, maxx);
+
+#undef T_EDGE
+
+    /*
+     * Circles passing through a corner.
+     *
+     * A circle passing through the point (x,y) satisfies:
+     *
+     * (x-t*dx)^2 + (y-t*dy)^2 == (cr + t*dr)^2
+     *
+     * If we set:
+     *   a = dx^2 + dy^2 - dr^2
+     *   b = x*dx + y*dy + cr*dr
+     *   c = x^2 + y^2 - cr^2
+     * we have:
+     *   a*t^2 - 2*b*t + c == 0
+     */
+    a = dx * dx + dy * dy - dr * dr;
+    if (fabs (a) < DBL_EPSILON * DBL_EPSILON) {
+	double b, maxd2;
+
+	/* Ensure that gradients with both a and dr small are
+	 * considered degenerate.
+	 * The floating point version of the degeneracy test implemented
+	 * in _radial_pattern_is_degenerate() is:
+	 *
+	 *  1) The circles are practically the same size:
+	 *     |dr| < DBL_EPSILON
+	 *  AND
+	 *  2a) The circles are both very small:
+	 *      min (r0, r1) < DBL_EPSILON
+	 *   OR
+	 *  2b) The circles are very close to each other:
+	 *      max (|dx|, |dy|) < 2 * DBL_EPSILON
+	 *
+	 * Assuming that the gradient is not degenerate, we want to
+	 * show that |a| < DBL_EPSILON^2 implies |dr| >= DBL_EPSILON.
+	 *
+	 * If the gradient is not degenerate yet it has |dr| <
+	 * DBL_EPSILON, (2b) is false, thus:
+	 *
+	 *   max (|dx|, |dy|) >= 2*DBL_EPSILON
+	 * which implies:
+	 *   4*DBL_EPSILON^2 <= max (|dx|, |dy|)^2 <= dx^2 + dy^2
+	 *
+	 * From the definition of a, we get:
+	 *   a = dx^2 + dy^2 - dr^2 < DBL_EPSILON^2
+	 *   dx^2 + dy^2 - DBL_EPSILON^2 < dr^2
+	 *   3*DBL_EPSILON^2 < dr^2
+	 *
+	 * which is inconsistent with the hypotheses, thus |dr| <
+	 * DBL_EPSILON is false or the gradient is degenerate.
+	 */
+	assert (fabs (dr) >= DBL_EPSILON);
+
+	/*
+	 * If a == 0, all the circles are tangent to a line in the
+	 * focus point. If this line is within the box extents, we
+	 * should add the circle with infinite radius, but this would
+	 * make the range unbounded, so we add the smallest circle whose
+	 * distance to the desired (degenerate) circle within the
+	 * bounding box does not exceed tolerance.
+	 *
+	 * The equation of the line is b==0, i.e.:
+	 *   x*dx + y*dy + cr*dr == 0
+	 *
+	 * We compute the intersection of the line with the box and
+	 * keep the intersection with maximum square distance (maxd2)
+	 * from the focus point.
+	 *
+	 * In the code the intersection is represented in another
+	 * coordinate system, whose origin is the focus point and
+	 * which has a u,v axes, which are respectively orthogonal and
+	 * parallel to the edge being intersected.
+	 *
+	 * The intersection is valid only if it belongs to the box,
+	 * otherwise it is ignored.
+	 *
+	 * For example:
+	 *
+	 *   y = y0
+	 *   x*dx + y0*dy + cr*dr == 0
+	 *   x = -(y0*dy + cr*dr) / dx
+	 *
+	 * which in (u,v) is:
+	 *   u = y0 - y_focus
+	 *   v = -(y0*dy + cr*dr) / dx - x_focus
+	 *
+	 * In the code:
+	 *   u = (edge) - (u_origin)
+	 *   v = -((edge) * (delta) + cr*dr) / (den) - v_focus
+	 */
+#define T_EDGE(edge,delta,den,lower,upper,u_origin,v_origin)	\
+	if (fabs (den) >= DBL_EPSILON) {			\
+	    double v;						\
+								\
+	    v = -((edge) * (delta) + cr * dr) / (den);		\
+	    if ((lower) <= v && v <= (upper)) {			\
+		double u, d2;					\
+								\
+		u = (edge) - (u_origin);			\
+		v -= (v_origin);				\
+		d2 = u*u + v*v;					\
+		if (maxd2 < d2)					\
+		    maxd2 = d2;					\
+	    }							\
+	}
+
+	maxd2 = 0;
+
+	/* degenerate circles (lines) passing through each edge */
+	T_EDGE (y0, dy, dx, minx, maxx, y_focus, x_focus);
+	T_EDGE (y1, dy, dx, minx, maxx, y_focus, x_focus);
+	T_EDGE (x0, dx, dy, miny, maxy, x_focus, y_focus);
+	T_EDGE (x1, dx, dy, miny, maxy, x_focus, y_focus);
+
+#undef T_EDGE
+
+	/*
+	 * The limit circle can be transformed rigidly to the y=0 line
+	 * and the circles tangent to it in (0,0) are:
+	 *
+	 *   x^2 + (y-r)^2 = r^2  <=>  x^2 + y^2 - 2*y*r = 0
+	 *
+	 * y is the distance from the line, in our case tolerance;
+	 * x is the distance along the line, i.e. sqrt(maxd2),
+	 * so:
+	 *
+	 *   r = cr + dr * t = (maxd2 + tolerance^2) / (2*tolerance)
+	 *   t = (r - cr) / dr =
+	 *       (maxd2 + tolerance^2 - 2*tolerance*cr) / (2*tolerance*dr)
+	 */
+	if (maxd2 > 0) {
+	    double t_limit = maxd2 + tolerance*tolerance - 2*tolerance*cr;
+	    t_limit /= 2 * tolerance * dr;
+	    valid = _extend_range (range, t_limit, valid);
+	}
+
+	/*
+	 * Nondegenerate, nonlimit circles passing through the corners.
+	 *
+	 * a == 0 && a*t^2 - 2*b*t + c == 0
+	 *
+	 * t = c / (2*b)
+	 *
+	 * The b == 0 case has just been handled, so we only have to
+	 * compute this if b != 0.
+	 */
+#define T_CORNER(x,y)							\
+	b = (x) * dx + (y) * dy + cr * dr;				\
+	if (fabs (b) >= DBL_EPSILON) {					\
+	    double t_corner;						\
+	    double x2 = (x) * (x);					\
+	    double y2 = (y) * (y);					\
+	    double cr2 = (cr) * (cr);					\
+	    double c = x2 + y2 - cr2;					\
+	    								\
+	    t_corner = 0.5 * c / b;					\
+	    if (t_corner * dr >= mindr)					\
+		valid = _extend_range (range, t_corner, valid);		\
+	}
+
+	/* circles touching each corner */
+	T_CORNER (x0, y0);
+	T_CORNER (x0, y1);
+	T_CORNER (x1, y0);
+	T_CORNER (x1, y1);
+
+#undef T_CORNER
+    } else {
+	double inva, b, c, d;
+
+	inva = 1 / a;
+
+	/*
+	 * Nondegenerate, nonlimit circles passing through the corners.
+	 *
+	 * a != 0 && a*t^2 - 2*b*t + c == 0
+	 *
+	 * t = (b +- sqrt (b*b - a*c)) / a
+	 *
+	 * If the argument of sqrt() is negative, then no circle
+	 * passes through the corner.
+	 */
+#define T_CORNER(x,y)							\
+	b = (x) * dx + (y) * dy + cr * dr;				\
+	c = (x) * (x) + (y) * (y) - cr * cr;				\
+	d = b * b - a * c;						\
+	if (d >= 0) {							\
+	    double t_corner;						\
+									\
+	    d = sqrt (d);						\
+	    t_corner = (b + d) * inva;					\
+	    if (t_corner * dr >= mindr)					\
+		valid = _extend_range (range, t_corner, valid);		\
+	    t_corner = (b - d) * inva;					\
+	    if (t_corner * dr >= mindr)					\
+		valid = _extend_range (range, t_corner, valid);		\
+	}
+
+	/* circles touching each corner */
+	T_CORNER (x0, y0);
+	T_CORNER (x0, y1);
+	T_CORNER (x1, y0);
+	T_CORNER (x1, y1);
+
+#undef T_CORNER
+    }
+}
+
+/**
+ * _cairo_gradient_pattern_box_to_parameter:
+ *
+ * Compute a interpolation range sufficient to draw (within the given
+ * tolerance) the gradient in the given box getting the same result as
+ * using the (-inf, +inf) range.
+ *
+ * Assumes that the pattern is not degenerate. This can be guaranteed
+ * by simplifying it to a solid clear if _cairo_pattern_is_clear or to
+ * a solid color if _cairo_gradient_pattern_is_solid.
+ *
+ * The range isn't guaranteed to be minimal, but it tries to.
+ **/
+void
+_cairo_gradient_pattern_box_to_parameter (const cairo_gradient_pattern_t *gradient,
+					  double x0, double y0,
+					  double x1, double y1,
+					  double tolerance,
+					  double out_range[2])
+{
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	_cairo_linear_pattern_box_to_parameter ((cairo_linear_pattern_t *) gradient,
+						x0, y0, x1, y1, out_range);
+    } else {
+	_cairo_radial_pattern_box_to_parameter ((cairo_radial_pattern_t *) gradient,
+						x0, y0, x1, y1, tolerance, out_range);
+    }
+}
+
+/**
+ * _cairo_gradient_pattern_interpolate:
+ *
+ * Interpolate between the start and end objects of linear or radial
+ * gradients.  The interpolated object is stored in out_circle, with
+ * the radius being zero in the linear gradient case.
+ **/
+void
+_cairo_gradient_pattern_interpolate (const cairo_gradient_pattern_t *gradient,
+				     double			     t,
+				     cairo_circle_double_t	    *out_circle)
+{
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+#define lerp(a,b) (a)*(1-t) + (b)*t
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
+	out_circle->center.x = lerp (linear->pd1.x, linear->pd2.x);
+	out_circle->center.y = lerp (linear->pd1.y, linear->pd2.y);
+	out_circle->radius = 0;
+    } else {
+	cairo_radial_pattern_t *radial = (cairo_radial_pattern_t *) gradient;
+	out_circle->center.x = lerp (radial->cd1.center.x, radial->cd2.center.x);
+	out_circle->center.y = lerp (radial->cd1.center.y, radial->cd2.center.y);
+	out_circle->radius   = lerp (radial->cd1.radius  , radial->cd2.radius);
+    }
+
+#undef lerp
+}
+
+
+/**
+ * _cairo_gradient_pattern_fit_to_range:
+ *
+ * Scale the extremes of a gradient to guarantee that the coordinates
+ * and their deltas are within the range (-max_value, max_value). The
+ * new extremes are stored in out_circle.
+ *
+ * The pattern matrix is scaled to guarantee that the aspect of the
+ * gradient is the same and the result is stored in out_matrix.
+ *
+ **/
+void
+_cairo_gradient_pattern_fit_to_range (const cairo_gradient_pattern_t *gradient,
+				      double			      max_value,
+				      cairo_matrix_t                 *out_matrix,
+				      cairo_circle_double_t	      out_circle[2])
+{
+    double dim;
+
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
+
+	out_circle[0].center = linear->pd1;
+	out_circle[0].radius = 0;
+	out_circle[1].center = linear->pd2;
+	out_circle[1].radius = 0;
+
+	dim = fabs (linear->pd1.x);
+	dim = MAX (dim, fabs (linear->pd1.y));
+	dim = MAX (dim, fabs (linear->pd2.x));
+	dim = MAX (dim, fabs (linear->pd2.y));
+	dim = MAX (dim, fabs (linear->pd1.x - linear->pd2.x));
+	dim = MAX (dim, fabs (linear->pd1.y - linear->pd2.y));
+    } else {
+	cairo_radial_pattern_t *radial = (cairo_radial_pattern_t *) gradient;
+
+	out_circle[0] = radial->cd1;
+	out_circle[1] = radial->cd2;
+
+	dim = fabs (radial->cd1.center.x);
+	dim = MAX (dim, fabs (radial->cd1.center.y));
+	dim = MAX (dim, fabs (radial->cd1.radius));
+	dim = MAX (dim, fabs (radial->cd2.center.x));
+	dim = MAX (dim, fabs (radial->cd2.center.y));
+	dim = MAX (dim, fabs (radial->cd2.radius));
+	dim = MAX (dim, fabs (radial->cd1.center.x - radial->cd2.center.x));
+	dim = MAX (dim, fabs (radial->cd1.center.y - radial->cd2.center.y));
+	dim = MAX (dim, fabs (radial->cd1.radius   - radial->cd2.radius));
+    }
+
+    if (unlikely (dim > max_value)) {
+	cairo_matrix_t scale;
+
+	dim = max_value / dim;
+
+	out_circle[0].center.x *= dim;
+	out_circle[0].center.y *= dim;
+	out_circle[0].radius   *= dim;
+	out_circle[1].center.x *= dim;
+	out_circle[1].center.y *= dim;
+	out_circle[1].radius   *= dim;
+
+	cairo_matrix_init_scale (&scale, dim, dim);
+	cairo_matrix_multiply (out_matrix, &gradient->base.matrix, &scale);
+    } else {
+	*out_matrix = gradient->base.matrix;
+    }
+}
+
+static cairo_bool_t
+_gradient_is_clear (const cairo_gradient_pattern_t *gradient,
+		    const cairo_rectangle_int_t *extents)
+{
+    unsigned int i;
+
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+    if (gradient->n_stops == 0 ||
+	(gradient->base.extend == CAIRO_EXTEND_NONE &&
+	 gradient->stops[0].offset == gradient->stops[gradient->n_stops - 1].offset))
+	return TRUE;
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL) {
+	/* degenerate radial gradients are clear */
+	if (_radial_pattern_is_degenerate ((cairo_radial_pattern_t *) gradient))
+	    return TRUE;
+    } else if (gradient->base.extend == CAIRO_EXTEND_NONE) {
+	/* EXTEND_NONE degenerate linear gradients are clear */
+	if (_linear_pattern_is_degenerate ((cairo_linear_pattern_t *) gradient))
+	    return TRUE;
+    }
+
+    /* Check if the extents intersect the drawn part of the pattern. */
+    if (extents != NULL &&
+	(gradient->base.extend == CAIRO_EXTEND_NONE ||
+	 gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL))
+    {
+	double t[2];
+
+	_cairo_gradient_pattern_box_to_parameter (gradient,
+						  extents->x,
+						  extents->y,
+						  extents->x + extents->width,
+						  extents->y + extents->height,
+						  DBL_EPSILON,
+						  t);
+
+	if (gradient->base.extend == CAIRO_EXTEND_NONE &&
+	    (t[0] >= gradient->stops[gradient->n_stops - 1].offset ||
+	     t[1] <= gradient->stops[0].offset))
+	{
+		return TRUE;
+	}
+
+	if (t[0] == t[1])
+	    return TRUE;
+    }
+
+    for (i = 0; i < gradient->n_stops; i++)
+	if (! CAIRO_COLOR_IS_CLEAR (&gradient->stops[i].color))
+	    return FALSE;
+
+    return TRUE;
+}
+
+static void
+_gradient_color_average (const cairo_gradient_pattern_t *gradient,
+			 cairo_color_t *color)
+{
+    double delta0, delta1;
+    double r, g, b, a;
+    unsigned int i, start = 1, end;
+
+    assert (gradient->n_stops > 0);
+    assert (gradient->base.extend != CAIRO_EXTEND_NONE);
+
+    if (gradient->n_stops == 1) {
+	_cairo_color_init_rgba (color,
+				gradient->stops[0].color.red,
+				gradient->stops[0].color.green,
+				gradient->stops[0].color.blue,
+				gradient->stops[0].color.alpha);
+	return;
+    }
+
+    end = gradient->n_stops - 1;
+
+    switch (gradient->base.extend) {
+    case CAIRO_EXTEND_REPEAT:
+      /*
+       * Sa, Sb and Sy, Sz are the first two and last two stops respectively.
+       * The weight of the first and last stop can be computed as the area of
+       * the following triangles (taken with height 1, since the whole [0-1]
+       * will have total weight 1 this way): b*h/2
+       *
+       *              +                   +
+       *            / |\                / | \
+       *          /   | \             /   |   \
+       *        /     |  \          /     |     \
+       * ~~~~~+---+---+---+~~~~~~~+-------+---+---+~~~~~
+       *   -1+Sz  0  Sa   Sb      Sy     Sz   1  1+Sa
+       *
+       * For the first stop: (Sb-(-1+Sz)/2 = (1+Sb-Sz)/2
+       * For the last stop: ((1+Sa)-Sy)/2 = (1+Sa-Sy)/2
+       * Halving the result is done after summing up all the areas.
+       */
+	delta0 = 1.0 + gradient->stops[1].offset - gradient->stops[end].offset;
+	delta1 = 1.0 + gradient->stops[0].offset - gradient->stops[end-1].offset;
+	break;
+
+    case CAIRO_EXTEND_REFLECT:
+      /*
+       * Sa, Sb and Sy, Sz are the first two and last two stops respectively.
+       * The weight of the first and last stop can be computed as the area of
+       * the following trapezoids (taken with height 1, since the whole [0-1]
+       * will have total weight 1 this way): (b+B)*h/2
+       *
+       * +-------+                   +---+
+       * |       |\                / |   |
+       * |       | \             /   |   |
+       * |       |  \          /     |   |
+       * +-------+---+~~~~~~~+-------+---+
+       * 0      Sa   Sb      Sy     Sz   1
+       *
+       * For the first stop: (Sa+Sb)/2
+       * For the last stop: ((1-Sz) + (1-Sy))/2 = (2-Sy-Sz)/2
+       * Halving the result is done after summing up all the areas.
+       */
+	delta0 = gradient->stops[0].offset + gradient->stops[1].offset;
+	delta1 = 2.0 - gradient->stops[end-1].offset - gradient->stops[end].offset;
+	break;
+
+    case CAIRO_EXTEND_PAD:
+      /* PAD is computed as the average of the first and last stop:
+       *  - take both of them with weight 1 (they will be halved
+       *    after the whole sum has been computed).
+       *  - avoid summing any of the inner stops.
+       */
+	delta0 = delta1 = 1.0;
+	start = end;
+	break;
+
+    case CAIRO_EXTEND_NONE:
+    default:
+	ASSERT_NOT_REACHED;
+	_cairo_color_init_rgba (color, 0, 0, 0, 0);
+	return;
+    }
+
+    r = delta0 * gradient->stops[0].color.red;
+    g = delta0 * gradient->stops[0].color.green;
+    b = delta0 * gradient->stops[0].color.blue;
+    a = delta0 * gradient->stops[0].color.alpha;
+
+    for (i = start; i < end; ++i) {
+      /* Inner stops weight is the same as the area of the triangle they influence
+       * (which goes from the stop before to the stop after), again with height 1
+       * since the whole must sum up to 1: b*h/2
+       * Halving is done after the whole sum has been computed.
+       */
+	double delta = gradient->stops[i+1].offset - gradient->stops[i-1].offset;
+	r += delta * gradient->stops[i].color.red;
+	g += delta * gradient->stops[i].color.green;
+	b += delta * gradient->stops[i].color.blue;
+	a += delta * gradient->stops[i].color.alpha;
+    }
+
+    r += delta1 * gradient->stops[end].color.red;
+    g += delta1 * gradient->stops[end].color.green;
+    b += delta1 * gradient->stops[end].color.blue;
+    a += delta1 * gradient->stops[end].color.alpha;
+
+    _cairo_color_init_rgba (color, r * .5, g * .5, b * .5, a * .5);
+}
+
+/**
+ * _cairo_pattern_alpha_range:
+ *
+ * Convenience function to determine the minimum and maximum alpha in
+ * the drawn part of a pattern (i.e. ignoring clear parts caused by
+ * extend modes and/or pattern shape).
+ *
+ * If not NULL, out_min and out_max will be set respectively to the
+ * minimum and maximum alpha value of the pattern.
+ **/
+void
+_cairo_pattern_alpha_range (const cairo_pattern_t *pattern,
+			    double                *out_min,
+			    double                *out_max)
+{
+    double alpha_min, alpha_max;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID: {
+	const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
+	alpha_min = alpha_max = solid->color.alpha;
+	break;
+    }
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL: {
+	const cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t *) pattern;
+	unsigned int i;
+
+	assert (gradient->n_stops >= 1);
+
+	alpha_min = alpha_max = gradient->stops[0].color.alpha;
+	for (i = 1; i < gradient->n_stops; i++) {
+	    if (alpha_min > gradient->stops[i].color.alpha)
+		alpha_min = gradient->stops[i].color.alpha;
+	    else if (alpha_max < gradient->stops[i].color.alpha)
+		alpha_max = gradient->stops[i].color.alpha;
+	}
+
+	break;
+    }
+
+    case CAIRO_PATTERN_TYPE_MESH: {
+	const cairo_mesh_pattern_t *mesh = (const cairo_mesh_pattern_t *) pattern;
+	const cairo_mesh_patch_t *patch = _cairo_array_index_const (&mesh->patches, 0);
+	unsigned int i, j, n = _cairo_array_num_elements (&mesh->patches);
+
+	assert (n >= 1);
+
+	alpha_min = alpha_max = patch[0].colors[0].alpha;
+	for (i = 0; i < n; i++) {
+	    for (j = 0; j < 4; j++) {
+		if (patch[i].colors[j].alpha < alpha_min)
+		    alpha_min = patch[i].colors[j].alpha;
+		else if (patch[i].colors[j].alpha > alpha_max)
+		    alpha_max = patch[i].colors[j].alpha;
+	    }
+	}
+
+	break;
+    }
+
+    default:
+	ASSERT_NOT_REACHED;
+	/* fall through */
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	alpha_min = 0;
+	alpha_max = 1;
+	break;
+    }
+
+    if (out_min)
+	*out_min = alpha_min;
+    if (out_max)
+	*out_max = alpha_max;
+}
+
+/**
+ * _cairo_mesh_pattern_coord_box:
+ *
+ * Convenience function to determine the range of the coordinates of
+ * the points used to define the patches of the mesh.
+ *
+ * This is guaranteed to contain the pattern extents, but might not be
+ * tight, just like a Bezier curve is always inside the convex hull of
+ * the control points.
+ *
+ * This function cannot be used while the mesh is being constructed.
+ *
+ * The function returns TRUE and sets the output parametes to define
+ * the coodrinate range if the mesh pattern contains at least one
+ * patch, otherwise it returns FALSE.
+ **/
+cairo_bool_t
+_cairo_mesh_pattern_coord_box (const cairo_mesh_pattern_t *mesh,
+			       double                     *out_xmin,
+			       double                     *out_ymin,
+			       double                     *out_xmax,
+			       double                     *out_ymax)
+{
+    const cairo_mesh_patch_t *patch;
+    unsigned int num_patches, i, j, k;
+    double x0, y0, x1, y1;
+
+    assert (mesh->current_patch == NULL);
+
+    num_patches = _cairo_array_num_elements (&mesh->patches);
+
+    if (num_patches == 0)
+	return FALSE;
+
+    patch = _cairo_array_index_const (&mesh->patches, 0);
+    x0 = x1 = patch->points[0][0].x;
+    y0 = y1 = patch->points[0][0].y;
+
+    for (i = 0; i < num_patches; i++) {
+	for (j = 0; j < 4; j++) {
+	    for (k = 0; k < 4; k++) {
+		x0 = MIN (x0, patch[i].points[j][k].x);
+		y0 = MIN (y0, patch[i].points[j][k].y);
+		x1 = MAX (x1, patch[i].points[j][k].x);
+		y1 = MAX (y1, patch[i].points[j][k].y);
+	    }
+	}
+    }
+
+    *out_xmin = x0;
+    *out_ymin = y0;
+    *out_xmax = x1;
+    *out_ymax = y1;
+
+    return TRUE;
+}
+
+/**
+ * _cairo_gradient_pattern_is_solid:
+ *
+ * Convenience function to determine whether a gradient pattern is
+ * a solid color within the given extents. In this case the color
+ * argument is initialized to the color the pattern represents.
+ * This functions doesn't handle completely transparent gradients,
+ * thus it should be called only after _cairo_pattern_is_clear has
+ * returned FALSE.
+ *
+ * Return value: %TRUE if the pattern is a solid color.
+ **/
+cairo_bool_t
+_cairo_gradient_pattern_is_solid (const cairo_gradient_pattern_t *gradient,
+				  const cairo_rectangle_int_t *extents,
+				  cairo_color_t *color)
+{
+    unsigned int i;
+
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+    /* TODO: radial */
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
+	if (_linear_pattern_is_degenerate (linear)) {
+	    _gradient_color_average (gradient, color);
+	    return TRUE;
+	}
+
+	if (gradient->base.extend == CAIRO_EXTEND_NONE) {
+	    double t[2];
+
+	    /* We already know that the pattern is not clear, thus if some
+	     * part of it is clear, the whole is not solid.
+	     */
+
+	    if (extents == NULL)
+		return FALSE;
+
+	    _cairo_linear_pattern_box_to_parameter (linear,
+						    extents->x,
+						    extents->y,
+						    extents->x + extents->width,
+						    extents->y + extents->height,
+						    t);
+
+	    if (t[0] < 0.0 || t[1] > 1.0)
+		return FALSE;
+	}
+    } else
+	return FALSE;
+
+    for (i = 1; i < gradient->n_stops; i++)
+	if (! _cairo_color_stop_equal (&gradient->stops[0].color,
+				       &gradient->stops[i].color))
+	    return FALSE;
+
+    _cairo_color_init_rgba (color,
+			    gradient->stops[0].color.red,
+			    gradient->stops[0].color.green,
+			    gradient->stops[0].color.blue,
+			    gradient->stops[0].color.alpha);
+
+    return TRUE;
+}
+
+/**
+ * _cairo_pattern_is_constant_alpha:
+ *
+ * Convenience function to determine whether a pattern has constant
+ * alpha within the given extents. In this case the alpha argument is
+ * initialized to the alpha within the extents.
+ *
+ * Return value: %TRUE if the pattern has constant alpha.
+ **/
+cairo_bool_t
+_cairo_pattern_is_constant_alpha (const cairo_pattern_t         *abstract_pattern,
+				  const cairo_rectangle_int_t   *extents,
+				  double                        *alpha)
+{
+    const cairo_pattern_union_t *pattern;
+    cairo_color_t color;
+
+    if (_cairo_pattern_is_clear (abstract_pattern)) {
+	*alpha = 0.0;
+	return TRUE;
+    }
+
+    if (_cairo_pattern_is_opaque (abstract_pattern, extents)) {
+	*alpha = 1.0;
+	return TRUE;
+    }
+
+    pattern = (cairo_pattern_union_t *) abstract_pattern;
+    switch (pattern->base.type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	*alpha = pattern->solid.color.alpha;
+	return TRUE;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	if (_cairo_gradient_pattern_is_solid (&pattern->gradient.base, extents, &color)) {
+	    *alpha = color.alpha;
+	    return TRUE;
+	} else {
+	    return FALSE;
+	}
+
+	/* TODO: need to test these as well */
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+    case CAIRO_PATTERN_TYPE_MESH:
+	return FALSE;
+    }
+
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+static cairo_bool_t
+_mesh_is_clear (const cairo_mesh_pattern_t *mesh)
+{
+    double x1, y1, x2, y2;
+    cairo_bool_t is_valid;
+
+    is_valid = _cairo_mesh_pattern_coord_box (mesh, &x1, &y1, &x2, &y2);
+    if (!is_valid)
+	return TRUE;
+
+    if (x2 - x1 < DBL_EPSILON || y2 - y1 < DBL_EPSILON)
+	return TRUE;
+
+    return FALSE;
+}
+
+/**
+ * _cairo_pattern_is_opaque_solid:
+ *
+ * Convenience function to determine whether a pattern is an opaque
+ * (alpha==1.0) solid color pattern. This is done by testing whether
+ * the pattern's alpha value when converted to a byte is 255, so if a
+ * backend actually supported deep alpha channels this function might
+ * not do the right thing.
+ *
+ * Return value: %TRUE if the pattern is an opaque, solid color.
+ **/
+cairo_bool_t
+_cairo_pattern_is_opaque_solid (const cairo_pattern_t *pattern)
+{
+    cairo_solid_pattern_t *solid;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
+	return FALSE;
+
+    solid = (cairo_solid_pattern_t *) pattern;
+
+    return CAIRO_COLOR_IS_OPAQUE (&solid->color);
+}
+
+static cairo_bool_t
+_surface_is_opaque (const cairo_surface_pattern_t *pattern,
+		    const cairo_rectangle_int_t *sample)
+{
+    cairo_rectangle_int_t extents;
+
+    if (pattern->surface->content & CAIRO_CONTENT_ALPHA)
+	return FALSE;
+
+    if (pattern->base.extend != CAIRO_EXTEND_NONE)
+	return TRUE;
+
+    if (! _cairo_surface_get_extents (pattern->surface, &extents))
+	return TRUE;
+
+    if (sample == NULL)
+	return FALSE;
+
+    return _cairo_rectangle_contains_rectangle (&extents, sample);
+}
+
+static cairo_bool_t
+_raster_source_is_opaque (const cairo_raster_source_pattern_t *pattern,
+			  const cairo_rectangle_int_t *sample)
+{
+    if (pattern->content & CAIRO_CONTENT_ALPHA)
+	return FALSE;
+
+    if (pattern->base.extend != CAIRO_EXTEND_NONE)
+	return TRUE;
+
+    if (sample == NULL)
+	return FALSE;
+
+    return _cairo_rectangle_contains_rectangle (&pattern->extents, sample);
+}
+
+static cairo_bool_t
+_surface_is_clear (const cairo_surface_pattern_t *pattern)
+{
+    cairo_rectangle_int_t extents;
+
+    if (_cairo_surface_get_extents (pattern->surface, &extents) &&
+	(extents.width == 0 || extents.height == 0))
+	return TRUE;
+
+    return pattern->surface->is_clear &&
+	pattern->surface->content & CAIRO_CONTENT_ALPHA;
+}
+
+static cairo_bool_t
+_raster_source_is_clear (const cairo_raster_source_pattern_t *pattern)
+{
+    return pattern->extents.width == 0 || pattern->extents.height == 0;
+}
+
+static cairo_bool_t
+_gradient_is_opaque (const cairo_gradient_pattern_t *gradient,
+		     const cairo_rectangle_int_t *sample)
+{
+    unsigned int i;
+
+    assert (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL);
+
+    if (gradient->n_stops == 0 ||
+	(gradient->base.extend == CAIRO_EXTEND_NONE &&
+	 gradient->stops[0].offset == gradient->stops[gradient->n_stops - 1].offset))
+	return FALSE;
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	if (gradient->base.extend == CAIRO_EXTEND_NONE) {
+	    double t[2];
+	    cairo_linear_pattern_t *linear = (cairo_linear_pattern_t *) gradient;
+
+	    /* EXTEND_NONE degenerate radial gradients are clear */
+	    if (_linear_pattern_is_degenerate (linear))
+		return FALSE;
+
+	    if (sample == NULL)
+		return FALSE;
+
+	    _cairo_linear_pattern_box_to_parameter (linear,
+						    sample->x,
+						    sample->y,
+						    sample->x + sample->width,
+						    sample->y + sample->height,
+						    t);
+
+	    if (t[0] < 0.0 || t[1] > 1.0)
+		return FALSE;
+	}
+    } else
+	return FALSE; /* TODO: check actual intersection */
+
+    for (i = 0; i < gradient->n_stops; i++)
+	if (! CAIRO_COLOR_IS_OPAQUE (&gradient->stops[i].color))
+	    return FALSE;
+
+    return TRUE;
+}
+
+/**
+ * _cairo_pattern_is_opaque:
+ *
+ * Convenience function to determine whether a pattern is an opaque
+ * pattern (of any type). The same caveats that apply to
+ * _cairo_pattern_is_opaque_solid apply here as well.
+ *
+ * Return value: %TRUE if the pattern is a opaque.
+ **/
+cairo_bool_t
+_cairo_pattern_is_opaque (const cairo_pattern_t *abstract_pattern,
+			  const cairo_rectangle_int_t *sample)
+{
+    const cairo_pattern_union_t *pattern;
+
+    if (abstract_pattern->has_component_alpha)
+	return FALSE;
+
+    pattern = (cairo_pattern_union_t *) abstract_pattern;
+    switch (pattern->base.type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _cairo_pattern_is_opaque_solid (abstract_pattern);
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _surface_is_opaque (&pattern->surface, sample);
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _raster_source_is_opaque (&pattern->raster_source, sample);
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _gradient_is_opaque (&pattern->gradient.base, sample);
+    case CAIRO_PATTERN_TYPE_MESH:
+	return FALSE;
+    }
+
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+cairo_bool_t
+_cairo_pattern_is_clear (const cairo_pattern_t *abstract_pattern)
+{
+    const cairo_pattern_union_t *pattern;
+
+    if (abstract_pattern->has_component_alpha)
+	return FALSE;
+
+    pattern = (cairo_pattern_union_t *) abstract_pattern;
+    switch (abstract_pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return CAIRO_COLOR_IS_CLEAR (&pattern->solid.color);
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _surface_is_clear (&pattern->surface);
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _raster_source_is_clear (&pattern->raster_source);
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _gradient_is_clear (&pattern->gradient.base, NULL);
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _mesh_is_clear (&pattern->mesh);
+    }
+
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+/*
+ * Will given row of back-translation matrix work with bilinear scale?
+ * This is true for scales larger than 1. Also it was judged acceptable
+ * for scales larger than .75. And if there is integer translation
+ * then a scale of exactly .5 works.
+ */
+static int
+use_bilinear(double x, double y, double t)
+{
+    /* This is the inverse matrix! */
+    double h = x*x + y*y;
+    if (h < 1.0 / (0.75 * 0.75))
+	return TRUE; /* scale > .75 */
+    if ((h > 3.99 && h < 4.01) /* scale is 1/2 */
+	&& !_cairo_fixed_from_double(x*y) /* parallel to an axis */
+	&& _cairo_fixed_is_integer (_cairo_fixed_from_double (t)))
+	return TRUE;
+    return FALSE;
+}
+
+/**
+ * _cairo_pattern_analyze_filter:
+ * @pattern: surface pattern
+ * Returns: the optimized #cairo_filter_t to use with @pattern.
+ *
+ * Possibly optimize the filter to a simpler value depending on transformation
+ **/
+cairo_filter_t
+_cairo_pattern_analyze_filter (const cairo_pattern_t *pattern)
+{
+    switch (pattern->filter) {
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BEST:
+    case CAIRO_FILTER_BILINEAR:
+    case CAIRO_FILTER_FAST:
+	/* If source pixels map 1:1 onto destination pixels, we do
+	 * not need to filter (and do not want to filter, since it
+	 * will cause blurriness)
+	 */
+	if (_cairo_matrix_is_pixel_exact (&pattern->matrix)) {
+	    return CAIRO_FILTER_NEAREST;
+	} else {
+	    /* Use BILINEAR for any scale greater than .75 instead
+	     * of GOOD. For scales of 1 and larger this is identical,
+	     * for the smaller sizes it was judged that the artifacts
+	     * were not worse than the artifacts from a box filer.
+	     * BILINEAR can also be used if the scale is exactly .5
+	     * and the translation in that direction is an integer.
+	     */
+	    if (pattern->filter == CAIRO_FILTER_GOOD &&
+		use_bilinear (pattern->matrix.xx, pattern->matrix.xy,
+			      pattern->matrix.x0) &&
+		use_bilinear (pattern->matrix.yx, pattern->matrix.yy,
+			      pattern->matrix.y0))
+		return CAIRO_FILTER_BILINEAR;
+	}
+	break;
+
+    case CAIRO_FILTER_NEAREST:
+    case CAIRO_FILTER_GAUSSIAN:
+    default:
+	break;
+    }
+
+    return pattern->filter;
+}
+
+/**
+ * _cairo_hypot:
+ * Returns: value similar to hypot(@x,@y)
+ *
+ * May want to replace this with Manhattan distance (abs(x)+abs(y)) if
+ * hypot is too slow, as there is no need for accuracy here.
+ **/
+static inline double
+_cairo_hypot(double x, double y)
+{
+    return hypot(x, y);
+}
+
+/**
+ * _cairo_pattern_sampled_area:
+ *
+ * Return region of @pattern that will be sampled to fill @extents,
+ * based on the transformation and filter.
+ *
+ * This does not include pixels that are mulitiplied by values very
+ * close to zero by the ends of filters. This is so that transforms
+ * that should be the identity or 90 degree rotations do not expand
+ * the source unexpectedly.
+ *
+ * XXX: We don't actually have any way of querying the backend for
+ *      the filter radius, so we just guess base on what we know that
+ *      backends do currently (see bug #10508)
+ **/
+void
+_cairo_pattern_sampled_area (const cairo_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents,
+			     cairo_rectangle_int_t *sample)
+{
+    double x1, x2, y1, y2;
+    double padx, pady;
+
+    /* Assume filters are interpolating, which means identity
+       cannot change the image */
+    if (_cairo_matrix_is_identity (&pattern->matrix)) {
+	*sample = *extents;
+	return;
+    }
+
+    /* Transform the centers of the corner pixels */
+    x1 = extents->x + 0.5;
+    y1 = extents->y + 0.5;
+    x2 = x1 + (extents->width - 1);
+    y2 = y1 + (extents->height - 1);
+    _cairo_matrix_transform_bounding_box (&pattern->matrix,
+					  &x1, &y1, &x2, &y2,
+					  NULL);
+
+    /* How far away from center will it actually sample?
+     * This is the distance from a transformed pixel center to the
+     * furthest sample of reasonable size.
+     */
+    switch (pattern->filter) {
+    case CAIRO_FILTER_NEAREST:
+    case CAIRO_FILTER_FAST:
+	/* Correct value is zero, but when the sample is on an integer
+	 * it is unknown if the backend will sample the pixel to the
+	 * left or right. This value makes it include both possible pixels.
+	 */
+	padx = pady = 0.004;
+	break;
+    case CAIRO_FILTER_BILINEAR:
+    case CAIRO_FILTER_GAUSSIAN:
+    default:
+	/* Correct value is .5 */
+	padx = pady = 0.495;
+	break;
+    case CAIRO_FILTER_GOOD:
+	/* Correct value is max(width,1)*.5 */
+	padx = _cairo_hypot (pattern->matrix.xx, pattern->matrix.xy);
+	if (padx <= 1.0) padx = 0.495;
+	else if (padx >= 16.0) padx = 7.92;
+	else padx *= 0.495;
+	pady = _cairo_hypot (pattern->matrix.yx, pattern->matrix.yy);
+	if (pady <= 1.0) pady = 0.495;
+	else if (pady >= 16.0) pady = 7.92;
+	else pady *= 0.495;
+	break;
+    case CAIRO_FILTER_BEST:
+	/* Correct value is width*2 */
+	padx = _cairo_hypot (pattern->matrix.xx, pattern->matrix.xy) * 1.98;
+	if (padx > 7.92) padx = 7.92;
+	pady = _cairo_hypot (pattern->matrix.yx, pattern->matrix.yy) * 1.98;
+	if (pady > 7.92) pady = 7.92;
+	break;
+    }
+
+    /* round furthest samples to edge of pixels */
+    x1 = floor (x1 - padx);
+    if (x1 < CAIRO_RECT_INT_MIN) x1 = CAIRO_RECT_INT_MIN;
+    sample->x = x1;
+
+    y1 = floor (y1 - pady);
+    if (y1 < CAIRO_RECT_INT_MIN) y1 = CAIRO_RECT_INT_MIN;
+    sample->y = y1;
+
+    x2 = floor (x2 + padx) + 1.0;
+    if (x2 > CAIRO_RECT_INT_MAX) x2 = CAIRO_RECT_INT_MAX;
+    sample->width = x2 - x1;
+
+    y2 = floor (y2 + pady) + 1.0;
+    if (y2 > CAIRO_RECT_INT_MAX) y2 = CAIRO_RECT_INT_MAX;
+    sample->height = y2 - y1;
+}
+
+/**
+ * _cairo_pattern_get_extents:
+ *
+ * Return the "target-space" extents of @pattern in @extents.
+ *
+ * For unbounded patterns, the @extents will be initialized with
+ * "infinite" extents, (minimum and maximum fixed-point values).
+ *
+ * When is_vector is TRUE, avoid rounding to zero widths or heights that
+ * are less than 1 unit.
+ *
+ * XXX: Currently, bounded gradient patterns will also return
+ * "infinite" extents, though it would be possible to optimize these
+ * with a little more work.
+ **/
+void
+_cairo_pattern_get_extents (const cairo_pattern_t         *pattern,
+			    cairo_rectangle_int_t         *extents,
+			    cairo_bool_t                   is_vector)
+{
+    double x1, y1, x2, y2;
+    int ix1, ix2, iy1, iy2;
+    cairo_bool_t round_x = FALSE;
+    cairo_bool_t round_y = FALSE;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	goto UNBOUNDED;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	{
+	    cairo_rectangle_int_t surface_extents;
+	    const cairo_surface_pattern_t *surface_pattern =
+		(const cairo_surface_pattern_t *) pattern;
+	    cairo_surface_t *surface = surface_pattern->surface;
+
+	    if (! _cairo_surface_get_extents (surface, &surface_extents))
+		goto UNBOUNDED;
+
+	    if (surface_extents.width == 0 || surface_extents.height == 0)
+		goto EMPTY;
+
+	    if (pattern->extend != CAIRO_EXTEND_NONE)
+		goto UNBOUNDED;
+
+	    x1 = surface_extents.x;
+	    y1 = surface_extents.y;
+	    x2 = surface_extents.x + (int) surface_extents.width;
+	    y2 = surface_extents.y + (int) surface_extents.height;
+
+	    goto HANDLE_FILTER;
+	}
+	break;
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	{
+	    const cairo_raster_source_pattern_t *raster =
+		(const cairo_raster_source_pattern_t *) pattern;
+
+	    if (raster->extents.width == 0 || raster->extents.height == 0)
+		goto EMPTY;
+
+	    if (pattern->extend != CAIRO_EXTEND_NONE)
+		goto UNBOUNDED;
+
+	    x1 = raster->extents.x;
+	    y1 = raster->extents.y;
+	    x2 = raster->extents.x + (int) raster->extents.width;
+	    y2 = raster->extents.y + (int) raster->extents.height;
+	}
+    HANDLE_FILTER:
+	switch (pattern->filter) {
+	case CAIRO_FILTER_NEAREST:
+	case CAIRO_FILTER_FAST:
+	    round_x = round_y = TRUE;
+	    /* We don't know which way .5 will go, so fudge it slightly. */
+	    x1 -= 0.004;
+	    y1 -= 0.004;
+	    x2 += 0.004;
+	    y2 += 0.004;
+	    break;
+	case CAIRO_FILTER_BEST:
+	    /* Assume best filter will produce nice antialiased edges */
+	    break;
+	case CAIRO_FILTER_BILINEAR:
+	case CAIRO_FILTER_GAUSSIAN:
+	case CAIRO_FILTER_GOOD:
+	default:
+	    /* These filters can blur the edge out 1/2 pixel when scaling up */
+	    if (_cairo_hypot (pattern->matrix.xx, pattern->matrix.yx) < 1.0) {
+		x1 -= 0.5;
+		x2 += 0.5;
+		round_x = TRUE;
+	    }
+	    if (_cairo_hypot (pattern->matrix.xy, pattern->matrix.yy) < 1.0) {
+		y1 -= 0.5;
+		y2 += 0.5;
+		round_y = TRUE;
+	    }
+	    break;
+	}
+	break;
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	{
+	    const cairo_radial_pattern_t *radial =
+		(const cairo_radial_pattern_t *) pattern;
+	    double cx1, cy1;
+	    double cx2, cy2;
+	    double r1, r2;
+
+	    if (_radial_pattern_is_degenerate (radial)) {
+		/* cairo-gstate should have optimised degenerate
+		 * patterns to solid clear patterns, so we can ignore
+		 * them here. */
+		goto EMPTY;
+	    }
+
+	    /* TODO: in some cases (focus outside/on the circle) it is
+	     * half-bounded. */
+	    if (pattern->extend != CAIRO_EXTEND_NONE)
+		goto UNBOUNDED;
+
+	    cx1 = radial->cd1.center.x;
+	    cy1 = radial->cd1.center.y;
+	    r1  = radial->cd1.radius;
+
+	    cx2 = radial->cd2.center.x;
+	    cy2 = radial->cd2.center.y;
+	    r2  = radial->cd2.radius;
+
+	    x1 = MIN (cx1 - r1, cx2 - r2);
+	    y1 = MIN (cy1 - r1, cy2 - r2);
+	    x2 = MAX (cx1 + r1, cx2 + r2);
+	    y2 = MAX (cy1 + r1, cy2 + r2);
+	}
+	break;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	{
+	    const cairo_linear_pattern_t *linear =
+		(const cairo_linear_pattern_t *) pattern;
+
+	    if (pattern->extend != CAIRO_EXTEND_NONE)
+		goto UNBOUNDED;
+
+	    if (_linear_pattern_is_degenerate (linear)) {
+		/* cairo-gstate should have optimised degenerate
+		 * patterns to solid ones, so we can again ignore
+		 * them here. */
+		goto EMPTY;
+	    }
+
+	    /* TODO: to get tight extents, use the matrix to transform
+	     * the pattern instead of transforming the extents later. */
+	    if (pattern->matrix.xy != 0. || pattern->matrix.yx != 0.)
+		goto UNBOUNDED;
+
+	    if (linear->pd1.x == linear->pd2.x) {
+		x1 = -HUGE_VAL;
+		x2 = HUGE_VAL;
+		y1 = MIN (linear->pd1.y, linear->pd2.y);
+		y2 = MAX (linear->pd1.y, linear->pd2.y);
+	    } else if (linear->pd1.y == linear->pd2.y) {
+		x1 = MIN (linear->pd1.x, linear->pd2.x);
+		x2 = MAX (linear->pd1.x, linear->pd2.x);
+		y1 = -HUGE_VAL;
+		y2 = HUGE_VAL;
+	    } else {
+		goto  UNBOUNDED;
+	    }
+
+	    /* The current linear renderer just point-samples in the middle
+	       of the pixels, similar to the NEAREST filter: */
+	    round_x = round_y = TRUE;
+	}
+	break;
+
+    case CAIRO_PATTERN_TYPE_MESH:
+	{
+	    const cairo_mesh_pattern_t *mesh =
+		(const cairo_mesh_pattern_t *) pattern;
+	    if (! _cairo_mesh_pattern_coord_box (mesh, &x1, &y1, &x2, &y2))
+		goto EMPTY;
+	}
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+    }
+
+    if (_cairo_matrix_is_translation (&pattern->matrix)) {
+	x1 -= pattern->matrix.x0; x2 -= pattern->matrix.x0;
+	y1 -= pattern->matrix.y0; y2 -= pattern->matrix.y0;
+    } else {
+	cairo_matrix_t imatrix;
+	cairo_status_t status;
+
+	imatrix = pattern->matrix;
+	status = cairo_matrix_invert (&imatrix);
+	/* cairo_pattern_set_matrix ensures the matrix is invertible */
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	_cairo_matrix_transform_bounding_box (&imatrix,
+					      &x1, &y1, &x2, &y2,
+					      NULL);
+    }
+
+    if (!round_x) {
+	x1 -= 0.5;
+	x2 += 0.5;
+    }
+    if (x1 < CAIRO_RECT_INT_MIN)
+	ix1 = CAIRO_RECT_INT_MIN;
+    else 
+	ix1 = _cairo_lround (x1);
+    if (x2 > CAIRO_RECT_INT_MAX)
+	ix2 = CAIRO_RECT_INT_MAX;
+    else
+	ix2 = _cairo_lround (x2);
+    extents->x = ix1; extents->width  = ix2 - ix1;
+    if (is_vector && extents->width == 0 && x1 != x2)
+	extents->width += 1;
+
+    if (!round_y) {
+	y1 -= 0.5;
+	y2 += 0.5;
+    }
+    if (y1 < CAIRO_RECT_INT_MIN)
+	iy1 = CAIRO_RECT_INT_MIN;
+    else
+	iy1 = _cairo_lround (y1);
+    if (y2 > CAIRO_RECT_INT_MAX)
+	iy2 = CAIRO_RECT_INT_MAX;
+    else
+	iy2 = _cairo_lround (y2);
+    extents->y = iy1; extents->height = iy2 - iy1;
+    if (is_vector && extents->height == 0 && y1 != y2)
+	extents->height += 1;
+
+    return;
+
+  UNBOUNDED:
+    /* unbounded patterns -> 'infinite' extents */
+    _cairo_unbounded_rectangle_init (extents);
+    return;
+
+  EMPTY:
+    extents->x = extents->y = 0;
+    extents->width = extents->height = 0;
+    return;
+}
+
+/**
+ * _cairo_pattern_get_ink_extents:
+ *
+ * Return the "target-space" inked extents of @pattern in @extents.
+ **/
+cairo_int_status_t
+_cairo_pattern_get_ink_extents (const cairo_pattern_t         *pattern,
+				cairo_rectangle_int_t         *extents)
+{
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	pattern->extend == CAIRO_EXTEND_NONE)
+    {
+	const cairo_surface_pattern_t *surface_pattern =
+	    (const cairo_surface_pattern_t *) pattern;
+	cairo_surface_t *surface = surface_pattern->surface;
+
+	surface = _cairo_surface_get_source (surface, NULL);
+	if (_cairo_surface_is_recording (surface)) {
+	    cairo_matrix_t imatrix;
+	    cairo_box_t box;
+	    cairo_status_t status;
+
+	    imatrix = pattern->matrix;
+	    status = cairo_matrix_invert (&imatrix);
+	    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+	    assert (status == CAIRO_STATUS_SUCCESS);
+
+	    status = _cairo_recording_surface_get_ink_bbox ((cairo_recording_surface_t *)surface,
+						   &box, &imatrix);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_box_round_to_rectangle (&box, extents);
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    _cairo_pattern_get_extents (pattern, extents, TRUE);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static unsigned long
+_cairo_solid_pattern_hash (unsigned long hash,
+			   const cairo_solid_pattern_t *solid)
+{
+    hash = _cairo_hash_bytes (hash, &solid->color, sizeof (solid->color));
+
+    return hash;
+}
+
+static unsigned long
+_cairo_gradient_color_stops_hash (unsigned long hash,
+				  const cairo_gradient_pattern_t *gradient)
+{
+    unsigned int n;
+
+    hash = _cairo_hash_bytes (hash,
+			      &gradient->n_stops,
+			      sizeof (gradient->n_stops));
+
+    for (n = 0; n < gradient->n_stops; n++) {
+	hash = _cairo_hash_bytes (hash,
+				  &gradient->stops[n].offset,
+				  sizeof (double));
+	hash = _cairo_hash_bytes (hash,
+				  &gradient->stops[n].color,
+				  sizeof (cairo_color_stop_t));
+    }
+
+    return hash;
+}
+
+unsigned long
+_cairo_linear_pattern_hash (unsigned long hash,
+			    const cairo_linear_pattern_t *linear)
+{
+    hash = _cairo_hash_bytes (hash, &linear->pd1, sizeof (linear->pd1));
+    hash = _cairo_hash_bytes (hash, &linear->pd2, sizeof (linear->pd2));
+
+    return _cairo_gradient_color_stops_hash (hash, &linear->base);
+}
+
+unsigned long
+_cairo_radial_pattern_hash (unsigned long hash,
+			    const cairo_radial_pattern_t *radial)
+{
+    hash = _cairo_hash_bytes (hash, &radial->cd1.center, sizeof (radial->cd1.center));
+    hash = _cairo_hash_bytes (hash, &radial->cd1.radius, sizeof (radial->cd1.radius));
+    hash = _cairo_hash_bytes (hash, &radial->cd2.center, sizeof (radial->cd2.center));
+    hash = _cairo_hash_bytes (hash, &radial->cd2.radius, sizeof (radial->cd2.radius));
+
+    return _cairo_gradient_color_stops_hash (hash, &radial->base);
+}
+
+static unsigned long
+_cairo_mesh_pattern_hash (unsigned long hash, const cairo_mesh_pattern_t *mesh)
+{
+    const cairo_mesh_patch_t *patch = _cairo_array_index_const (&mesh->patches, 0);
+    unsigned int i, n = _cairo_array_num_elements (&mesh->patches);
+
+    for (i = 0; i < n; i++)
+       hash = _cairo_hash_bytes (hash, patch + i, sizeof (cairo_mesh_patch_t));
+
+    return hash;
+}
+
+static unsigned long
+_cairo_surface_pattern_hash (unsigned long hash,
+			     const cairo_surface_pattern_t *surface)
+{
+    hash ^= surface->surface->unique_id;
+
+    return hash;
+}
+
+static unsigned long
+_cairo_raster_source_pattern_hash (unsigned long hash,
+				   const cairo_raster_source_pattern_t *raster)
+{
+    hash ^= (uintptr_t)raster->user_data;
+
+    return hash;
+}
+
+unsigned long
+_cairo_pattern_hash (const cairo_pattern_t *pattern)
+{
+    unsigned long hash = _CAIRO_HASH_INIT_VALUE;
+
+    if (pattern->status)
+	return 0;
+
+    hash = _cairo_hash_bytes (hash, &pattern->type, sizeof (pattern->type));
+    if (pattern->type != CAIRO_PATTERN_TYPE_SOLID) {
+	hash = _cairo_hash_bytes (hash,
+				  &pattern->matrix, sizeof (pattern->matrix));
+	hash = _cairo_hash_bytes (hash,
+				  &pattern->filter, sizeof (pattern->filter));
+	hash = _cairo_hash_bytes (hash,
+				  &pattern->extend, sizeof (pattern->extend));
+	hash = _cairo_hash_bytes (hash,
+				  &pattern->has_component_alpha,
+				  sizeof (pattern->has_component_alpha));
+    }
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _cairo_solid_pattern_hash (hash, (cairo_solid_pattern_t *) pattern);
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return _cairo_linear_pattern_hash (hash, (cairo_linear_pattern_t *) pattern);
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _cairo_radial_pattern_hash (hash, (cairo_radial_pattern_t *) pattern);
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _cairo_mesh_pattern_hash (hash, (cairo_mesh_pattern_t *) pattern);
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _cairo_surface_pattern_hash (hash, (cairo_surface_pattern_t *) pattern);
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _cairo_raster_source_pattern_hash (hash, (cairo_raster_source_pattern_t *) pattern);
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+_cairo_solid_pattern_equal (const cairo_solid_pattern_t *a,
+			    const cairo_solid_pattern_t *b)
+{
+    return _cairo_color_equal (&a->color, &b->color);
+}
+
+static cairo_bool_t
+_cairo_gradient_color_stops_equal (const cairo_gradient_pattern_t *a,
+				   const cairo_gradient_pattern_t *b)
+{
+    unsigned int n;
+
+    if (a->n_stops != b->n_stops)
+	return FALSE;
+
+    for (n = 0; n < a->n_stops; n++) {
+	if (a->stops[n].offset != b->stops[n].offset)
+	    return FALSE;
+	if (! _cairo_color_stop_equal (&a->stops[n].color, &b->stops[n].color))
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_linear_pattern_equal (const cairo_linear_pattern_t *a,
+			     const cairo_linear_pattern_t *b)
+{
+    if (a->pd1.x != b->pd1.x)
+	return FALSE;
+
+    if (a->pd1.y != b->pd1.y)
+	return FALSE;
+
+    if (a->pd2.x != b->pd2.x)
+	return FALSE;
+
+    if (a->pd2.y != b->pd2.y)
+	return FALSE;
+
+    return _cairo_gradient_color_stops_equal (&a->base, &b->base);
+}
+
+cairo_bool_t
+_cairo_radial_pattern_equal (const cairo_radial_pattern_t *a,
+			     const cairo_radial_pattern_t *b)
+{
+    if (a->cd1.center.x != b->cd1.center.x)
+	return FALSE;
+
+    if (a->cd1.center.y != b->cd1.center.y)
+	return FALSE;
+
+    if (a->cd1.radius != b->cd1.radius)
+	return FALSE;
+
+    if (a->cd2.center.x != b->cd2.center.x)
+	return FALSE;
+
+    if (a->cd2.center.y != b->cd2.center.y)
+	return FALSE;
+
+    if (a->cd2.radius != b->cd2.radius)
+	return FALSE;
+
+    return _cairo_gradient_color_stops_equal (&a->base, &b->base);
+}
+
+static cairo_bool_t
+_cairo_mesh_pattern_equal (const cairo_mesh_pattern_t *a,
+			   const cairo_mesh_pattern_t *b)
+{
+    const cairo_mesh_patch_t *patch_a, *patch_b;
+    unsigned int i, num_patches_a, num_patches_b;
+
+    num_patches_a = _cairo_array_num_elements (&a->patches);
+    num_patches_b = _cairo_array_num_elements (&b->patches);
+
+    if (num_patches_a != num_patches_b)
+	return FALSE;
+
+    for (i = 0; i < num_patches_a; i++) {
+	patch_a = _cairo_array_index_const (&a->patches, i);
+	patch_b = _cairo_array_index_const (&b->patches, i);
+	if (memcmp (patch_a, patch_b, sizeof(cairo_mesh_patch_t)) != 0)
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+static cairo_bool_t
+_cairo_surface_pattern_equal (const cairo_surface_pattern_t *a,
+			      const cairo_surface_pattern_t *b)
+{
+    return a->surface->unique_id == b->surface->unique_id;
+}
+
+static cairo_bool_t
+_cairo_raster_source_pattern_equal (const cairo_raster_source_pattern_t *a,
+				    const cairo_raster_source_pattern_t *b)
+{
+    return a->user_data == b->user_data;
+}
+
+cairo_bool_t
+_cairo_pattern_equal (const cairo_pattern_t *a, const cairo_pattern_t *b)
+{
+    if (a->status || b->status)
+	return FALSE;
+
+    if (a == b)
+	return TRUE;
+
+    if (a->type != b->type)
+	return FALSE;
+
+    if (a->has_component_alpha != b->has_component_alpha)
+	return FALSE;
+
+    if (a->type != CAIRO_PATTERN_TYPE_SOLID) {
+	if (memcmp (&a->matrix, &b->matrix, sizeof (cairo_matrix_t)))
+	    return FALSE;
+
+	if (a->filter != b->filter)
+	    return FALSE;
+
+	if (a->extend != b->extend)
+	    return FALSE;
+    }
+
+    switch (a->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _cairo_solid_pattern_equal ((cairo_solid_pattern_t *) a,
+					   (cairo_solid_pattern_t *) b);
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return _cairo_linear_pattern_equal ((cairo_linear_pattern_t *) a,
+					    (cairo_linear_pattern_t *) b);
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _cairo_radial_pattern_equal ((cairo_radial_pattern_t *) a,
+					    (cairo_radial_pattern_t *) b);
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _cairo_mesh_pattern_equal ((cairo_mesh_pattern_t *) a,
+					  (cairo_mesh_pattern_t *) b);
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _cairo_surface_pattern_equal ((cairo_surface_pattern_t *) a,
+					     (cairo_surface_pattern_t *) b);
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _cairo_raster_source_pattern_equal ((cairo_raster_source_pattern_t *) a,
+						   (cairo_raster_source_pattern_t *) b);
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+/**
+ * cairo_pattern_get_rgba:
+ * @pattern: a #cairo_pattern_t
+ * @red: return value for red component of color, or %NULL
+ * @green: return value for green component of color, or %NULL
+ * @blue: return value for blue component of color, or %NULL
+ * @alpha: return value for alpha component of color, or %NULL
+ *
+ * Gets the solid color for a solid color pattern.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH if the pattern is not a solid
+ * color pattern.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_get_rgba (cairo_pattern_t *pattern,
+			double *red, double *green,
+			double *blue, double *alpha)
+{
+    cairo_solid_pattern_t *solid = (cairo_solid_pattern_t*) pattern;
+    double r0, g0, b0, a0;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    _cairo_color_get_rgba (&solid->color, &r0, &g0, &b0, &a0);
+
+    if (red)
+	*red = r0;
+    if (green)
+	*green = g0;
+    if (blue)
+	*blue = b0;
+    if (alpha)
+	*alpha = a0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_pattern_get_surface:
+ * @pattern: a #cairo_pattern_t
+ * @surface: return value for surface of pattern, or %NULL
+ *
+ * Gets the surface of a surface pattern.  The reference returned in
+ * @surface is owned by the pattern; the caller should call
+ * cairo_surface_reference() if the surface is to be retained.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH if the pattern is not a surface
+ * pattern.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_get_surface (cairo_pattern_t *pattern,
+			   cairo_surface_t **surface)
+{
+    cairo_surface_pattern_t *spat = (cairo_surface_pattern_t*) pattern;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (surface)
+	*surface = spat->surface;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_pattern_get_color_stop_rgba:
+ * @pattern: a #cairo_pattern_t
+ * @index: index of the stop to return data for
+ * @offset: return value for the offset of the stop, or %NULL
+ * @red: return value for red component of color, or %NULL
+ * @green: return value for green component of color, or %NULL
+ * @blue: return value for blue component of color, or %NULL
+ * @alpha: return value for alpha component of color, or %NULL
+ *
+ * Gets the color and offset information at the given @index for a
+ * gradient pattern.  Values of @index range from 0 to n-1
+ * where n is the number returned
+ * by cairo_pattern_get_color_stop_count().
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or %CAIRO_STATUS_INVALID_INDEX
+ * if @index is not valid for the given pattern.  If the pattern is
+ * not a gradient pattern, %CAIRO_STATUS_PATTERN_TYPE_MISMATCH is
+ * returned.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_get_color_stop_rgba (cairo_pattern_t *pattern,
+				   int index, double *offset,
+				   double *red, double *green,
+				   double *blue, double *alpha)
+{
+    cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t*) pattern;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
+	pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (index < 0 || (unsigned int) index >= gradient->n_stops)
+	return _cairo_error (CAIRO_STATUS_INVALID_INDEX);
+
+    if (offset)
+	*offset = gradient->stops[index].offset;
+    if (red)
+	*red = gradient->stops[index].color.red;
+    if (green)
+	*green = gradient->stops[index].color.green;
+    if (blue)
+	*blue = gradient->stops[index].color.blue;
+    if (alpha)
+	*alpha = gradient->stops[index].color.alpha;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_pattern_get_color_stop_count:
+ * @pattern: a #cairo_pattern_t
+ * @count: return value for the number of color stops, or %NULL
+ *
+ * Gets the number of color stops specified in the given gradient
+ * pattern.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH if @pattern is not a gradient
+ * pattern.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_get_color_stop_count (cairo_pattern_t *pattern,
+				    int *count)
+{
+    cairo_gradient_pattern_t *gradient = (cairo_gradient_pattern_t*) pattern;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR &&
+	pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (count)
+	*count = gradient->n_stops;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_pattern_get_linear_points:
+ * @pattern: a #cairo_pattern_t
+ * @x0: return value for the x coordinate of the first point, or %NULL
+ * @y0: return value for the y coordinate of the first point, or %NULL
+ * @x1: return value for the x coordinate of the second point, or %NULL
+ * @y1: return value for the y coordinate of the second point, or %NULL
+ *
+ * Gets the gradient endpoints for a linear gradient.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH if @pattern is not a linear
+ * gradient pattern.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_get_linear_points (cairo_pattern_t *pattern,
+				 double *x0, double *y0,
+				 double *x1, double *y1)
+{
+    cairo_linear_pattern_t *linear = (cairo_linear_pattern_t*) pattern;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_LINEAR)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (x0)
+	*x0 = linear->pd1.x;
+    if (y0)
+	*y0 = linear->pd1.y;
+    if (x1)
+	*x1 = linear->pd2.x;
+    if (y1)
+	*y1 = linear->pd2.y;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_pattern_get_radial_circles:
+ * @pattern: a #cairo_pattern_t
+ * @x0: return value for the x coordinate of the center of the first circle, or %NULL
+ * @y0: return value for the y coordinate of the center of the first circle, or %NULL
+ * @r0: return value for the radius of the first circle, or %NULL
+ * @x1: return value for the x coordinate of the center of the second circle, or %NULL
+ * @y1: return value for the y coordinate of the center of the second circle, or %NULL
+ * @r1: return value for the radius of the second circle, or %NULL
+ *
+ * Gets the gradient endpoint circles for a radial gradient, each
+ * specified as a center coordinate and a radius.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH if @pattern is not a radial
+ * gradient pattern.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_pattern_get_radial_circles (cairo_pattern_t *pattern,
+				  double *x0, double *y0, double *r0,
+				  double *x1, double *y1, double *r1)
+{
+    cairo_radial_pattern_t *radial = (cairo_radial_pattern_t*) pattern;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_RADIAL)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (x0)
+	*x0 = radial->cd1.center.x;
+    if (y0)
+	*y0 = radial->cd1.center.y;
+    if (r0)
+	*r0 = radial->cd1.radius;
+    if (x1)
+	*x1 = radial->cd2.center.x;
+    if (y1)
+	*y1 = radial->cd2.center.y;
+    if (r1)
+	*r1 = radial->cd2.radius;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_mesh_pattern_get_patch_count:
+ * @pattern: a #cairo_pattern_t
+ * @count: return value for the number patches, or %NULL
+ *
+ * Gets the number of patches specified in the given mesh pattern.
+ *
+ * The number only includes patches which have been finished by
+ * calling cairo_mesh_pattern_end_patch(). For example it will be 0
+ * during the definition of the first patch.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or
+ * %CAIRO_STATUS_PATTERN_TYPE_MISMATCH if @pattern is not a mesh
+ * pattern.
+ *
+ * Since: 1.12
+ **/
+cairo_status_t
+cairo_mesh_pattern_get_patch_count (cairo_pattern_t *pattern,
+				    unsigned int *count)
+{
+    cairo_mesh_pattern_t *mesh = (cairo_mesh_pattern_t *) pattern;
+
+    if (unlikely (pattern->status))
+	return pattern->status;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH))
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (count) {
+	*count = _cairo_array_num_elements (&mesh->patches);
+	if (mesh->current_patch)
+	    *count -= 1;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_mesh_pattern_get_patch_count);
+
+/**
+ * cairo_mesh_pattern_get_path:
+ * @pattern: a #cairo_pattern_t
+ * @patch_num: the patch number to return data for
+ *
+ * Gets path defining the patch @patch_num for a mesh
+ * pattern.
+ *
+ * @patch_num can range from 0 to n-1 where n is the number returned by
+ * cairo_mesh_pattern_get_patch_count().
+ *
+ * Return value: the path defining the patch, or a path with status
+ * %CAIRO_STATUS_INVALID_INDEX if @patch_num or @point_num is not
+ * valid for @pattern. If @pattern is not a mesh pattern, a path with
+ * status %CAIRO_STATUS_PATTERN_TYPE_MISMATCH is returned.
+ *
+ * Since: 1.12
+ **/
+cairo_path_t *
+cairo_mesh_pattern_get_path (cairo_pattern_t *pattern,
+			     unsigned int patch_num)
+{
+    cairo_mesh_pattern_t *mesh = (cairo_mesh_pattern_t *) pattern;
+    const cairo_mesh_patch_t *patch;
+    cairo_path_t *path;
+    cairo_path_data_t *data;
+    unsigned int patch_count;
+    int l, current_point;
+
+    if (unlikely (pattern->status))
+	return _cairo_path_create_in_error (pattern->status);
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH))
+	return _cairo_path_create_in_error (_cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH));
+
+    patch_count = _cairo_array_num_elements (&mesh->patches);
+    if (mesh->current_patch)
+	patch_count--;
+
+    if (unlikely (patch_num >= patch_count))
+	return _cairo_path_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_INDEX));
+
+    patch = _cairo_array_index_const (&mesh->patches, patch_num);
+
+    path = _cairo_malloc (sizeof (cairo_path_t));
+    if (path == NULL)
+	return _cairo_path_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    path->num_data = 18;
+    path->data = _cairo_malloc_ab (path->num_data,
+				   sizeof (cairo_path_data_t));
+    if (path->data == NULL) {
+	free (path);
+	return _cairo_path_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    data = path->data;
+    data[0].header.type = CAIRO_PATH_MOVE_TO;
+    data[0].header.length = 2;
+    data[1].point.x = patch->points[0][0].x;
+    data[1].point.y = patch->points[0][0].y;
+    data += data[0].header.length;
+
+    current_point = 0;
+
+    for (l = 0; l < 4; l++) {
+	int i, j, k;
+
+	data[0].header.type = CAIRO_PATH_CURVE_TO;
+	data[0].header.length = 4;
+
+	for (k = 1; k < 4; k++) {
+	    current_point = (current_point + 1) % 12;
+	    i = mesh_path_point_i[current_point];
+	    j = mesh_path_point_j[current_point];
+	    data[k].point.x = patch->points[i][j].x;
+	    data[k].point.y = patch->points[i][j].y;
+	}
+
+	data += data[0].header.length;
+    }
+
+    path->status = CAIRO_STATUS_SUCCESS;
+
+    return path;
+}
+slim_hidden_def (cairo_mesh_pattern_get_path);
+
+/**
+ * cairo_mesh_pattern_get_corner_color_rgba:
+ * @pattern: a #cairo_pattern_t
+ * @patch_num: the patch number to return data for
+ * @corner_num: the corner number to return data for
+ * @red: return value for red component of color, or %NULL
+ * @green: return value for green component of color, or %NULL
+ * @blue: return value for blue component of color, or %NULL
+ * @alpha: return value for alpha component of color, or %NULL
+ *
+ * Gets the color information in corner @corner_num of patch
+ * @patch_num for a mesh pattern.
+ *
+ * @patch_num can range from 0 to n-1 where n is the number returned by
+ * cairo_mesh_pattern_get_patch_count().
+ *
+ * Valid values for @corner_num are from 0 to 3 and identify the
+ * corners as explained in cairo_pattern_create_mesh().
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or %CAIRO_STATUS_INVALID_INDEX
+ * if @patch_num or @corner_num is not valid for @pattern. If
+ * @pattern is not a mesh pattern, %CAIRO_STATUS_PATTERN_TYPE_MISMATCH
+ * is returned.
+ *
+ * Since: 1.12
+ **/
+cairo_status_t
+cairo_mesh_pattern_get_corner_color_rgba (cairo_pattern_t *pattern,
+					  unsigned int patch_num,
+					  unsigned int corner_num,
+					  double *red, double *green,
+					  double *blue, double *alpha)
+{
+    cairo_mesh_pattern_t *mesh = (cairo_mesh_pattern_t *) pattern;
+    unsigned int patch_count;
+    const cairo_mesh_patch_t *patch;
+
+    if (unlikely (pattern->status))
+	return pattern->status;
+
+    if (unlikely (pattern->type != CAIRO_PATTERN_TYPE_MESH))
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (unlikely (corner_num > 3))
+	return _cairo_error (CAIRO_STATUS_INVALID_INDEX);
+
+    patch_count = _cairo_array_num_elements (&mesh->patches);
+    if (mesh->current_patch)
+	patch_count--;
+
+    if (unlikely (patch_num >= patch_count))
+	return _cairo_error (CAIRO_STATUS_INVALID_INDEX);
+
+    patch = _cairo_array_index_const (&mesh->patches, patch_num);
+
+    if (red)
+	*red = patch->colors[corner_num].red;
+    if (green)
+	*green = patch->colors[corner_num].green;
+    if (blue)
+	*blue = patch->colors[corner_num].blue;
+    if (alpha)
+	*alpha = patch->colors[corner_num].alpha;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_mesh_pattern_get_corner_color_rgba);
+
+/**
+ * cairo_mesh_pattern_get_control_point:
+ * @pattern: a #cairo_pattern_t
+ * @patch_num: the patch number to return data for
+ * @point_num: the control point number to return data for
+ * @x: return value for the x coordinate of the control point, or %NULL
+ * @y: return value for the y coordinate of the control point, or %NULL
+ *
+ * Gets the control point @point_num of patch @patch_num for a mesh
+ * pattern.
+ *
+ * @patch_num can range from 0 to n-1 where n is the number returned by
+ * cairo_mesh_pattern_get_patch_count().
+ *
+ * Valid values for @point_num are from 0 to 3 and identify the
+ * control points as explained in cairo_pattern_create_mesh().
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, or %CAIRO_STATUS_INVALID_INDEX
+ * if @patch_num or @point_num is not valid for @pattern. If @pattern
+ * is not a mesh pattern, %CAIRO_STATUS_PATTERN_TYPE_MISMATCH is
+ * returned.
+ *
+ * Since: 1.12
+ **/
+cairo_status_t
+cairo_mesh_pattern_get_control_point (cairo_pattern_t *pattern,
+				      unsigned int patch_num,
+				      unsigned int point_num,
+				      double *x, double *y)
+{
+    cairo_mesh_pattern_t *mesh = (cairo_mesh_pattern_t *) pattern;
+    const cairo_mesh_patch_t *patch;
+    unsigned int patch_count;
+    int i, j;
+
+    if (pattern->status)
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_MESH)
+	return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+
+    if (point_num > 3)
+	return _cairo_error (CAIRO_STATUS_INVALID_INDEX);
+
+    patch_count = _cairo_array_num_elements (&mesh->patches);
+    if (mesh->current_patch)
+	patch_count--;
+
+    if (unlikely (patch_num >= patch_count))
+	return _cairo_error (CAIRO_STATUS_INVALID_INDEX);
+
+    patch = _cairo_array_index_const (&mesh->patches, patch_num);
+
+    i = mesh_control_point_i[point_num];
+    j = mesh_control_point_j[point_num];
+
+    if (x)
+	*x = patch->points[i][j].x;
+    if (y)
+	*y = patch->points[i][j].y;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_mesh_pattern_get_control_point);
+
+void
+_cairo_pattern_reset_static_data (void)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (freed_pattern_pool); i++)
+	_freed_pool_reset (&freed_pattern_pool[i]);
+}
+
+static void
+_cairo_debug_print_surface_pattern (FILE *file,
+				    const cairo_surface_pattern_t *pattern)
+{
+    const char *s;
+    switch (pattern->surface->type) {
+    case CAIRO_SURFACE_TYPE_IMAGE: s = "image"; break;
+    case CAIRO_SURFACE_TYPE_PDF: s = "pdf"; break;
+    case CAIRO_SURFACE_TYPE_PS: s = "ps"; break;
+    case CAIRO_SURFACE_TYPE_XLIB: s = "xlib"; break;
+    case CAIRO_SURFACE_TYPE_XCB: s = "xcb"; break;
+    case CAIRO_SURFACE_TYPE_GLITZ: s = "glitz"; break;
+    case CAIRO_SURFACE_TYPE_QUARTZ: s = "quartz"; break;
+    case CAIRO_SURFACE_TYPE_WIN32: s = "win32"; break;
+    case CAIRO_SURFACE_TYPE_BEOS: s = "beos"; break;
+    case CAIRO_SURFACE_TYPE_DIRECTFB: s = "directfb"; break;
+    case CAIRO_SURFACE_TYPE_SVG: s = "svg"; break;
+    case CAIRO_SURFACE_TYPE_OS2: s = "os2"; break;
+    case CAIRO_SURFACE_TYPE_WIN32_PRINTING: s = "win32_printing"; break;
+    case CAIRO_SURFACE_TYPE_QUARTZ_IMAGE: s = "quartz_image"; break;
+    case CAIRO_SURFACE_TYPE_SCRIPT: s = "script"; break;
+    case CAIRO_SURFACE_TYPE_QT: s = "qt"; break;
+    case CAIRO_SURFACE_TYPE_RECORDING: s = "recording"; break;
+    case CAIRO_SURFACE_TYPE_VG: s = "vg"; break;
+    case CAIRO_SURFACE_TYPE_GL: s = "gl"; break;
+    case CAIRO_SURFACE_TYPE_DRM: s = "drm"; break;
+    case CAIRO_SURFACE_TYPE_TEE: s = "tee"; break;
+    case CAIRO_SURFACE_TYPE_XML: s = "xml"; break;
+    case CAIRO_SURFACE_TYPE_SKIA: s = "skia"; break; /* Deprecated */
+    case CAIRO_SURFACE_TYPE_SUBSURFACE: s = "subsurface"; break;
+    case CAIRO_SURFACE_TYPE_COGL: s = "cogl"; break;
+    default: s = "invalid"; ASSERT_NOT_REACHED; break;
+    }
+    fprintf (file, "  surface type: %s\n", s);
+}
+
+static void
+_cairo_debug_print_raster_source_pattern (FILE *file,
+					  const cairo_raster_source_pattern_t *raster)
+{
+    fprintf (file, "  content: %x, size %dx%d\n", raster->content, raster->extents.width, raster->extents.height);
+}
+
+static void
+_cairo_debug_print_linear_pattern (FILE *file,
+				    const cairo_linear_pattern_t *pattern)
+{
+}
+
+static void
+_cairo_debug_print_radial_pattern (FILE *file,
+				   const cairo_radial_pattern_t *pattern)
+{
+}
+
+static void
+_cairo_debug_print_mesh_pattern (FILE *file,
+				 const cairo_mesh_pattern_t *pattern)
+{
+}
+
+void
+_cairo_debug_print_pattern (FILE *file, const cairo_pattern_t *pattern)
+{
+    const char *s;
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID: s = "solid"; break;
+    case CAIRO_PATTERN_TYPE_SURFACE: s = "surface"; break;
+    case CAIRO_PATTERN_TYPE_LINEAR: s = "linear"; break;
+    case CAIRO_PATTERN_TYPE_RADIAL: s = "radial"; break;
+    case CAIRO_PATTERN_TYPE_MESH: s = "mesh"; break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE: s = "raster"; break;
+    default: s = "invalid"; ASSERT_NOT_REACHED; break;
+    }
+
+    fprintf (file, "pattern: %s\n", s);
+    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID)
+	return;
+
+    switch (pattern->extend) {
+    case CAIRO_EXTEND_NONE: s = "none"; break;
+    case CAIRO_EXTEND_REPEAT: s = "repeat"; break;
+    case CAIRO_EXTEND_REFLECT: s = "reflect"; break;
+    case CAIRO_EXTEND_PAD: s = "pad"; break;
+    default: s = "invalid"; ASSERT_NOT_REACHED; break;
+    }
+    fprintf (file, "  extend: %s\n", s);
+
+    switch (pattern->filter) {
+    case CAIRO_FILTER_FAST: s = "fast"; break;
+    case CAIRO_FILTER_GOOD: s = "good"; break;
+    case CAIRO_FILTER_BEST: s = "best"; break;
+    case CAIRO_FILTER_NEAREST: s = "nearest"; break;
+    case CAIRO_FILTER_BILINEAR: s = "bilinear"; break;
+    case CAIRO_FILTER_GAUSSIAN: s = "guassian"; break;
+    default: s = "invalid"; ASSERT_NOT_REACHED; break;
+    }
+    fprintf (file, "  filter: %s\n", s);
+    fprintf (file, "  matrix: [%g %g %g %g %g %g]\n",
+	     pattern->matrix.xx, pattern->matrix.yx,
+	     pattern->matrix.xy, pattern->matrix.yy,
+	     pattern->matrix.x0, pattern->matrix.y0);
+    switch (pattern->type) {
+    default:
+    case CAIRO_PATTERN_TYPE_SOLID:
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	_cairo_debug_print_raster_source_pattern (file, (cairo_raster_source_pattern_t *)pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	_cairo_debug_print_surface_pattern (file, (cairo_surface_pattern_t *)pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	_cairo_debug_print_linear_pattern (file, (cairo_linear_pattern_t *)pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	_cairo_debug_print_radial_pattern (file, (cairo_radial_pattern_t *)pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	_cairo_debug_print_mesh_pattern (file, (cairo_mesh_pattern_t *)pattern);
+	break;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-interchange.c b/libs/cairo-1.16.0/src/cairo-pdf-interchange.c
new file mode 100644
index 0000000..7d8981b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-interchange.c
@@ -0,0 +1,1728 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2016 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+
+/* PDF Document Interchange features:
+ *  - metadata
+ *  - document outline
+ *  - tagged pdf
+ *  - hyperlinks
+ *  - page labels
+ */
+
+#define _DEFAULT_SOURCE /* for localtime_r(), gmtime_r(), snprintf(), strdup() */
+#include "cairoint.h"
+
+#include "cairo-pdf.h"
+#include "cairo-pdf-surface-private.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+#include "cairo-output-stream-private.h"
+
+#include <time.h>
+
+#ifndef HAVE_LOCALTIME_R
+#define localtime_r(T, BUF) (*(BUF) = *localtime (T))
+#endif
+#ifndef HAVE_GMTIME_R
+#define gmtime_r(T, BUF) (*(BUF) = *gmtime (T))
+#endif
+
+static void
+write_rect_to_pdf_quad_points (cairo_output_stream_t   *stream,
+			       const cairo_rectangle_t *rect,
+			       double                   surface_height)
+{
+    _cairo_output_stream_printf (stream,
+				 "%f %f %f %f %f %f %f %f",
+				 rect->x,
+				 surface_height - rect->y,
+				 rect->x + rect->width,
+				 surface_height - rect->y,
+				 rect->x + rect->width,
+				 surface_height - (rect->y + rect->height),
+				 rect->x,
+				 surface_height - (rect->y + rect->height));
+}
+
+static void
+write_rect_int_to_pdf_bbox (cairo_output_stream_t       *stream,
+			    const cairo_rectangle_int_t *rect,
+			    double                       surface_height)
+{
+    _cairo_output_stream_printf (stream,
+				 "%d %f %d %f",
+				 rect->x,
+				 surface_height - (rect->y + rect->height),
+				 rect->x + rect->width,
+				 surface_height - rect->y);
+}
+
+static cairo_int_status_t
+add_tree_node (cairo_pdf_surface_t           *surface,
+	       cairo_pdf_struct_tree_node_t  *parent,
+	       const char                    *name,
+	       cairo_pdf_struct_tree_node_t **new_node)
+{
+    cairo_pdf_struct_tree_node_t *node;
+
+    node = _cairo_malloc (sizeof(cairo_pdf_struct_tree_node_t));
+    if (unlikely (node == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    node->name = strdup (name);
+    node->res = _cairo_pdf_surface_new_object (surface);
+    if (node->res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    node->parent = parent;
+    cairo_list_init (&node->children);
+    _cairo_array_init (&node->mcid, sizeof(struct page_mcid));
+    node->annot_res.id = 0;
+    node->extents.valid = FALSE;
+    cairo_list_init (&node->extents.link);
+
+    cairo_list_add_tail (&node->link, &parent->children);
+
+    *new_node = node;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+is_leaf_node (cairo_pdf_struct_tree_node_t *node)
+{
+    return node->parent && cairo_list_is_empty (&node->children) ;
+}
+
+static void
+free_node (cairo_pdf_struct_tree_node_t *node)
+{
+    cairo_pdf_struct_tree_node_t *child, *next;
+
+    if (!node)
+	return;
+
+    cairo_list_foreach_entry_safe (child, next, cairo_pdf_struct_tree_node_t,
+				   &node->children, link)
+    {
+	cairo_list_del (&child->link);
+	free_node (child);
+    }
+    free (node->name);
+    _cairo_array_fini (&node->mcid);
+    free (node);
+}
+
+static cairo_status_t
+add_mcid_to_node (cairo_pdf_surface_t          *surface,
+		  cairo_pdf_struct_tree_node_t *node,
+		  int                           page,
+		  int                          *mcid)
+{
+    struct page_mcid mcid_elem;
+    cairo_int_status_t status;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    status = _cairo_array_append (&ic->mcid_to_tree, &node);
+    if (unlikely (status))
+	return status;
+
+    mcid_elem.page = page;
+    mcid_elem.mcid = _cairo_array_num_elements (&ic->mcid_to_tree) - 1;
+    *mcid = mcid_elem.mcid;
+    return _cairo_array_append (&node->mcid, &mcid_elem);
+}
+
+static cairo_int_status_t
+add_annotation (cairo_pdf_surface_t           *surface,
+		cairo_pdf_struct_tree_node_t  *node,
+		const char                    *name,
+		const char                    *attributes)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_pdf_annotation_t *annot;
+
+    annot = malloc (sizeof(cairo_pdf_annotation_t));
+    if (unlikely (annot == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_tag_parse_link_attributes (attributes, &annot->link_attrs);
+    if (unlikely (status)) {
+	free (annot);
+	return status;
+    }
+
+    annot->node = node;
+
+    status = _cairo_array_append (&ic->annots, &annot);
+
+    return status;
+}
+
+static void
+free_annotation (cairo_pdf_annotation_t *annot)
+{
+    _cairo_array_fini (&annot->link_attrs.rects);
+    free (annot->link_attrs.dest);
+    free (annot->link_attrs.uri);
+    free (annot->link_attrs.file);
+    free (annot);
+}
+
+static void
+cairo_pdf_interchange_clear_annotations (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    int num_elems, i;
+
+    num_elems = _cairo_array_num_elements (&ic->annots);
+    for (i = 0; i < num_elems; i++) {
+	cairo_pdf_annotation_t * annot;
+
+	_cairo_array_copy_element (&ic->annots, i, &annot);
+	free_annotation (annot);
+    }
+    _cairo_array_truncate (&ic->annots, 0);
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_node_object (cairo_pdf_surface_t            *surface,
+					 cairo_pdf_struct_tree_node_t   *node)
+{
+    struct page_mcid *mcid_elem;
+    int i, num_mcid, first_page;
+    cairo_pdf_resource_t *page_res;
+    cairo_pdf_struct_tree_node_t *child;
+
+    _cairo_pdf_surface_update_object (surface, node->res);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /StructElem\n"
+				 "   /S /%s\n"
+				 "   /P %d 0 R\n",
+				 node->res.id,
+				 node->name,
+				 node->parent->res.id);
+
+    if (! cairo_list_is_empty (&node->children)) {
+	if (cairo_list_is_singular (&node->children) && node->annot_res.id == 0) {
+	    child = cairo_list_first_entry (&node->children, cairo_pdf_struct_tree_node_t, link);
+	    _cairo_output_stream_printf (surface->output, "   /K %d 0 R\n", child->res.id);
+	} else {
+	    _cairo_output_stream_printf (surface->output, "   /K [ ");
+	    if (node->annot_res.id != 0) {
+		_cairo_output_stream_printf (surface->output,
+					     "<< /Type /OBJR /Obj %d 0 R >> ",
+					     node->annot_res.id);
+	    }
+	    cairo_list_foreach_entry (child, cairo_pdf_struct_tree_node_t,
+				      &node->children, link)
+	    {
+		_cairo_output_stream_printf (surface->output, "%d 0 R ", child->res.id);
+	    }
+	    _cairo_output_stream_printf (surface->output, "]\n");
+	}
+    } else {
+	num_mcid = _cairo_array_num_elements (&node->mcid);
+	if (num_mcid > 0 ) {
+	    mcid_elem = _cairo_array_index (&node->mcid, 0);
+	    first_page = mcid_elem->page;
+	    page_res = _cairo_array_index (&surface->pages, first_page - 1);
+	    _cairo_output_stream_printf (surface->output, "   /Pg %d 0 R\n", page_res->id);
+
+	    if (num_mcid == 1 && node->annot_res.id == 0) {
+		_cairo_output_stream_printf (surface->output, "   /K %d\n", mcid_elem->mcid);
+	    } else {
+		_cairo_output_stream_printf (surface->output, "   /K [ ");
+		if (node->annot_res.id != 0) {
+		    _cairo_output_stream_printf (surface->output,
+						 "<< /Type /OBJR /Obj %d 0 R >> ",
+						 node->annot_res.id);
+		}
+		for (i = 0; i < num_mcid; i++) {
+		    mcid_elem = _cairo_array_index (&node->mcid, i);
+		    page_res = _cairo_array_index (&surface->pages, mcid_elem->page - 1);
+		    if (mcid_elem->page == first_page) {
+			_cairo_output_stream_printf (surface->output, "%d ", mcid_elem->mcid);
+		    } else {
+			_cairo_output_stream_printf (surface->output,
+						     "\n       << /Type /MCR /Pg %d 0 R /MCID %d >> ",
+						     page_res->id,
+						     mcid_elem->mcid);
+		    }
+		}
+		_cairo_output_stream_printf (surface->output, "]\n");
+	    }
+	}
+    }
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static void
+init_named_dest_key (cairo_pdf_named_dest_t *dest)
+{
+    dest->base.hash = _cairo_hash_bytes (_CAIRO_HASH_INIT_VALUE,
+					 dest->attrs.name,
+					 strlen (dest->attrs.name));
+}
+
+static cairo_bool_t
+_named_dest_equal (const void *key_a, const void *key_b)
+{
+    const cairo_pdf_named_dest_t *a = key_a;
+    const cairo_pdf_named_dest_t *b = key_b;
+
+    return strcmp (a->attrs.name, b->attrs.name) == 0;
+}
+
+static void
+_named_dest_pluck (void *entry, void *closure)
+{
+    cairo_pdf_named_dest_t *dest = entry;
+    cairo_hash_table_t *table = closure;
+
+    _cairo_hash_table_remove (table, &dest->base);
+    free (dest->attrs.name);
+    free (dest);
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_explicit_dest (cairo_pdf_surface_t *surface,
+                                          int                  page,
+                                          cairo_bool_t         has_pos,
+                                          double               x,
+                                          double               y)
+{
+    cairo_pdf_resource_t res;
+    double height;
+
+    if (page < 1 || page > (int)_cairo_array_num_elements (&surface->pages))
+       return CAIRO_INT_STATUS_TAG_ERROR;
+
+    _cairo_array_copy_element (&surface->page_heights, page - 1, &height);
+    _cairo_array_copy_element (&surface->pages, page - 1, &res);
+    if (has_pos) {
+       _cairo_output_stream_printf (surface->output,
+                                    "   /Dest [%d 0 R /XYZ %f %f 0]\n",
+                                    res.id,
+                                    x,
+                                    height - y);
+    } else {
+       _cairo_output_stream_printf (surface->output,
+                                    "   /Dest [%d 0 R /XYZ null null 0]\n",
+                                    res.id);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_dest (cairo_pdf_surface_t *surface,
+				  cairo_link_attrs_t  *link_attrs)
+{
+    cairo_int_status_t status;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    char *dest = NULL;
+
+    if (link_attrs->dest) {
+	cairo_pdf_named_dest_t key;
+	cairo_pdf_named_dest_t *named_dest;
+
+	/* check if this is a link to an internal named dest */
+	key.attrs.name = link_attrs->dest;
+	init_named_dest_key (&key);
+	named_dest = _cairo_hash_table_lookup (ic->named_dests, &key.base);
+	if (named_dest && named_dest->attrs.internal) {
+	    /* if dests exists and has internal attribute, use a direct
+	     * reference instead of the name */
+	    double x = 0;
+	    double y = 0;
+
+	    if (named_dest->extents.valid) {
+		x = named_dest->extents.extents.x;
+		y = named_dest->extents.extents.y;
+	    }
+
+	    if (named_dest->attrs.x_valid)
+		x = named_dest->attrs.x;
+
+	    if (named_dest->attrs.y_valid)
+		y = named_dest->attrs.y;
+
+	    status = cairo_pdf_interchange_write_explicit_dest (surface,
+								named_dest->page,
+								TRUE,
+								x, y);
+	    return status;
+	}
+    }
+
+    if (link_attrs->dest) {
+	status = _cairo_utf8_to_pdf_string (link_attrs->dest, &dest);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     "   /Dest %s\n",
+				     dest);
+	free (dest);
+    } else {
+	status = cairo_pdf_interchange_write_explicit_dest (surface,
+							    link_attrs->page,
+							    link_attrs->has_pos,
+							    link_attrs->pos.x,
+							    link_attrs->pos.y);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_link_action (cairo_pdf_surface_t   *surface,
+					 cairo_link_attrs_t    *link_attrs)
+{
+    cairo_int_status_t status;
+    char *dest = NULL;
+
+    if (link_attrs->link_type == TAG_LINK_DEST) {
+	status = cairo_pdf_interchange_write_dest (surface, link_attrs);
+	if (unlikely (status))
+	    return status;
+
+    } else if (link_attrs->link_type == TAG_LINK_URI) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /A <<\n"
+				     "      /Type /Action\n"
+				     "      /S /URI\n"
+				     "      /URI (%s)\n"
+				     "   >>\n",
+				     link_attrs->uri);
+    } else if (link_attrs->link_type == TAG_LINK_FILE) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /A <<\n"
+				     "      /Type /Action\n"
+				     "      /S /GoToR\n"
+				     "      /F (%s)\n",
+				     link_attrs->file);
+	if (link_attrs->dest) {
+	    status = _cairo_utf8_to_pdf_string (link_attrs->dest, &dest);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "      /D %s\n",
+					 dest);
+	    free (dest);
+	} else {
+	    if (link_attrs->has_pos) {
+		_cairo_output_stream_printf (surface->output,
+					     "      /D [%d %f %f 0]\n",
+					     link_attrs->page,
+					     link_attrs->pos.x,
+					     link_attrs->pos.y);
+	    } else {
+		_cairo_output_stream_printf (surface->output,
+					     "      /D [%d null null 0]\n",
+					     link_attrs->page);
+	    }
+	}
+	_cairo_output_stream_printf (surface->output,
+				     "   >>\n");
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_annot (cairo_pdf_surface_t    *surface,
+				   cairo_pdf_annotation_t *annot)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_pdf_struct_tree_node_t *node = annot->node;
+    int sp;
+    int i, num_rects;
+    double height;
+
+    num_rects = _cairo_array_num_elements (&annot->link_attrs.rects);
+    if (strcmp (node->name, CAIRO_TAG_LINK) == 0 &&
+	annot->link_attrs.link_type != TAG_LINK_EMPTY &&
+	(node->extents.valid || num_rects > 0))
+    {
+	status = _cairo_array_append (&ic->parent_tree, &node->res);
+	if (unlikely (status))
+	    return status;
+
+	sp = _cairo_array_num_elements (&ic->parent_tree) - 1;
+
+	node->annot_res = _cairo_pdf_surface_new_object (surface);
+
+	status = _cairo_array_append (&surface->page_annots, &node->annot_res);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_pdf_surface_update_object (surface, node->annot_res);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Annot\n"
+				     "   /Subtype /Link\n"
+				     "   /StructParent %d\n",
+				     node->annot_res.id,
+				     sp);
+
+	height = surface->height;
+	if (num_rects > 0) {
+	    cairo_rectangle_int_t bbox_rect;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "   /QuadPoints [ ");
+	    for (i = 0; i < num_rects; i++) {
+		cairo_rectangle_t rectf;
+		cairo_rectangle_int_t recti;
+
+		_cairo_array_copy_element (&annot->link_attrs.rects, i, &rectf);
+		_cairo_rectangle_int_from_double (&recti, &rectf);
+		if (i == 0)
+		    bbox_rect = recti;
+		else
+		    _cairo_rectangle_union (&bbox_rect, &recti);
+
+		write_rect_to_pdf_quad_points (surface->output, &rectf, height);
+		_cairo_output_stream_printf (surface->output, " ");
+	    }
+	    _cairo_output_stream_printf (surface->output,
+					 "]\n"
+					 "   /Rect [ ");
+	    write_rect_int_to_pdf_bbox (surface->output, &bbox_rect, height);
+	    _cairo_output_stream_printf (surface->output, " ]\n");
+	} else {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /Rect [ ");
+	    write_rect_int_to_pdf_bbox (surface->output, &node->extents.extents, height);
+	    _cairo_output_stream_printf (surface->output, " ]\n");
+	}
+
+	status = cairo_pdf_interchange_write_link_action (surface, &annot->link_attrs);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     "   /BS << /W 0 >>"
+				     ">>\n"
+				     "endobj\n");
+
+	status = _cairo_output_stream_get_status (surface->output);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_walk_struct_tree (cairo_pdf_surface_t          *surface,
+					cairo_pdf_struct_tree_node_t *node,
+					cairo_int_status_t (*func) (cairo_pdf_surface_t *surface,
+								    cairo_pdf_struct_tree_node_t *node))
+{
+    cairo_int_status_t status;
+    cairo_pdf_struct_tree_node_t *child;
+
+    if (node->parent) {
+	status = func (surface, node);
+	if (unlikely (status))
+	    return status;
+    }
+
+    cairo_list_foreach_entry (child, cairo_pdf_struct_tree_node_t,
+			      &node->children, link)
+    {
+	status = cairo_pdf_interchange_walk_struct_tree (surface, child, func);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_struct_tree (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_pdf_struct_tree_node_t *child;
+
+    if (cairo_list_is_empty (&ic->struct_root->children))
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->struct_tree_root = _cairo_pdf_surface_new_object (surface);
+    ic->struct_root->res = surface->struct_tree_root;
+
+    cairo_pdf_interchange_walk_struct_tree (surface, ic->struct_root, cairo_pdf_interchange_write_node_object);
+
+    child = cairo_list_first_entry (&ic->struct_root->children, cairo_pdf_struct_tree_node_t, link);
+    _cairo_pdf_surface_update_object (surface, surface->struct_tree_root);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /StructTreeRoot\n"
+				 "   /ParentTree %d 0 R\n",
+				 surface->struct_tree_root.id,
+				 ic->parent_tree_res.id);
+
+    if (cairo_list_is_singular (&ic->struct_root->children)) {
+	child = cairo_list_first_entry (&ic->struct_root->children, cairo_pdf_struct_tree_node_t, link);
+	_cairo_output_stream_printf (surface->output, "   /K [ %d 0 R ]\n", child->res.id);
+    } else {
+	_cairo_output_stream_printf (surface->output, "   /K [ ");
+
+	cairo_list_foreach_entry (child, cairo_pdf_struct_tree_node_t,
+				  &ic->struct_root->children, link)
+	{
+	    _cairo_output_stream_printf (surface->output, "%d 0 R ", child->res.id);
+	}
+	_cairo_output_stream_printf (surface->output, "]\n");
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_page_annots (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    int num_elems, i;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    num_elems = _cairo_array_num_elements (&ic->annots);
+    for (i = 0; i < num_elems; i++) {
+	cairo_pdf_annotation_t * annot;
+
+	_cairo_array_copy_element (&ic->annots, i, &annot);
+	status = cairo_pdf_interchange_write_annot (surface, annot);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_page_parent_elems (cairo_pdf_surface_t *surface)
+{
+    int num_elems, i;
+    cairo_pdf_struct_tree_node_t *node;
+    cairo_pdf_resource_t res;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    surface->page_parent_tree = -1;
+    num_elems = _cairo_array_num_elements (&ic->mcid_to_tree);
+    if (num_elems > 0) {
+	res = _cairo_pdf_surface_new_object (surface);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "[\n",
+				     res.id);
+	for (i = 0; i < num_elems; i++) {
+	    _cairo_array_copy_element (&ic->mcid_to_tree, i, &node);
+	    _cairo_output_stream_printf (surface->output, "  %d 0 R\n", node->res.id);
+	}
+	_cairo_output_stream_printf (surface->output,
+				     "]\n"
+				     "endobj\n");
+	status = _cairo_array_append (&ic->parent_tree, &res);
+	surface->page_parent_tree = _cairo_array_num_elements (&ic->parent_tree) - 1;
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_parent_tree (cairo_pdf_surface_t *surface)
+{
+    int num_elems, i;
+    cairo_pdf_resource_t *res;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    num_elems = _cairo_array_num_elements (&ic->parent_tree);
+    if (num_elems > 0) {
+	ic->parent_tree_res = _cairo_pdf_surface_new_object (surface);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Nums [\n",
+				     ic->parent_tree_res.id);
+	for (i = 0; i < num_elems; i++) {
+	    res = _cairo_array_index (&ic->parent_tree, i);
+	    if (res->id) {
+		_cairo_output_stream_printf (surface->output,
+					     "   %d %d 0 R\n",
+					     i,
+					     res->id);
+	    }
+	}
+	_cairo_output_stream_printf (surface->output,
+				     "  ]\n"
+				     ">>\n"
+				     "endobj\n");
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_outline (cairo_pdf_surface_t *surface)
+{
+    int num_elems, i;
+    cairo_pdf_outline_entry_t *outline;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status;
+    char *name = NULL;
+
+    num_elems = _cairo_array_num_elements (&ic->outline);
+    if (num_elems < 2)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    _cairo_array_copy_element (&ic->outline, 0, &outline);
+    outline->res = _cairo_pdf_surface_new_object (surface);
+    surface->outlines_dict_res = outline->res;
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Outlines\n"
+				 "   /First %d 0 R\n"
+				 "   /Last %d 0 R\n"
+				 "   /Count %d\n"
+				 ">>\n"
+				 "endobj\n",
+				 outline->res.id,
+				 outline->first_child->res.id,
+				 outline->last_child->res.id,
+				 outline->count);
+
+    for (i = 1; i < num_elems; i++) {
+	_cairo_array_copy_element (&ic->outline, i, &outline);
+	_cairo_pdf_surface_update_object (surface, outline->res);
+
+	status = _cairo_utf8_to_pdf_string (outline->name, &name);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Title %s\n"
+				     "   /Parent %d 0 R\n",
+				     outline->res.id,
+				     name,
+				     outline->parent->res.id);
+	free (name);
+
+	if (outline->prev) {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /Prev %d 0 R\n",
+					 outline->prev->res.id);
+	}
+
+	if (outline->next) {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /Next %d 0 R\n",
+					 outline->next->res.id);
+	}
+
+	if (outline->first_child) {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /First %d 0 R\n"
+					 "   /Last %d 0 R\n"
+					 "   /Count %d\n",
+					 outline->first_child->res.id,
+					 outline->last_child->res.id,
+					 outline->count);
+	}
+
+	if (outline->flags) {
+	    int flags = 0;
+	    if (outline->flags & CAIRO_PDF_OUTLINE_FLAG_ITALIC)
+		flags |= 1;
+	    if (outline->flags & CAIRO_PDF_OUTLINE_FLAG_BOLD)
+		flags |= 2;
+	    _cairo_output_stream_printf (surface->output,
+					 "   /F %d\n",
+					 flags);
+	}
+
+	status = cairo_pdf_interchange_write_link_action (surface, &outline->link_attrs);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     ">>\n"
+				     "endobj\n");
+    }
+
+    return status;
+}
+
+/*
+ * Split a page label into a text prefix and numeric suffix. Leading '0's are
+ * included in the prefix. eg
+ *  "3"     => NULL,    3
+ *  "cover" => "cover", 0
+ *  "A-2"   => "A-",    2
+ *  "A-002" => "A-00",  2
+ */
+static char *
+split_label (const char* label, int *num)
+{
+    int len, i;
+
+    *num = 0;
+    len = strlen (label);
+    if (len == 0)
+	return NULL;
+
+    i = len;
+    while (i > 0 && _cairo_isdigit (label[i-1]))
+	   i--;
+
+    while (i < len && label[i] == '0')
+	i++;
+
+    if (i < len)
+	sscanf (label + i, "%d", num);
+
+    if (i > 0) {
+	char *s;
+	s = _cairo_malloc (i + 1);
+	if (!s)
+	    return NULL;
+
+	memcpy (s, label, i);
+	s[i] = 0;
+	return s;
+    }
+
+    return NULL;
+}
+
+/* strcmp that handles NULL arguments */
+static cairo_bool_t
+strcmp_null (const char *s1, const char *s2)
+{
+    if (s1 && s2)
+	return strcmp (s1, s2) == 0;
+
+    if (!s1 && !s2)
+	return TRUE;
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_page_labels (cairo_pdf_surface_t *surface)
+{
+    int num_elems, i;
+    char *label;
+    char *prefix;
+    char *prev_prefix;
+    int num, prev_num;
+    cairo_int_status_t status;
+    cairo_bool_t has_labels;
+
+    /* Check if any labels defined */
+    num_elems = _cairo_array_num_elements (&surface->page_labels);
+    has_labels = FALSE;
+    for (i = 0; i < num_elems; i++) {
+	_cairo_array_copy_element (&surface->page_labels, i, &label);
+	if (label) {
+	    has_labels = TRUE;
+	    break;
+	}
+    }
+
+    if (!has_labels)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->page_labels_res = _cairo_pdf_surface_new_object (surface);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Nums [\n",
+				 surface->page_labels_res.id);
+    prefix = NULL;
+    prev_prefix = NULL;
+    num = 0;
+    prev_num = 0;
+    for (i = 0; i < num_elems; i++) {
+	_cairo_array_copy_element (&surface->page_labels, i, &label);
+	if (label) {
+	    prefix = split_label (label, &num);
+	} else {
+	    prefix = NULL;
+	    num = i + 1;
+	}
+
+	if (!strcmp_null (prefix, prev_prefix) || num != prev_num + 1) {
+	    _cairo_output_stream_printf (surface->output,  "   %d << ", i);
+
+	    if (num)
+		_cairo_output_stream_printf (surface->output,  "/S /D /St %d ", num);
+
+	    if (prefix) {
+		char *s;
+		status = _cairo_utf8_to_pdf_string (prefix, &s);
+		if (unlikely (status))
+		    return status;
+
+		_cairo_output_stream_printf (surface->output,  "/P %s ", s);
+		free (s);
+	    }
+
+	    _cairo_output_stream_printf (surface->output,  ">>\n");
+	}
+	free (prev_prefix);
+	prev_prefix = prefix;
+	prefix = NULL;
+	prev_num = num;
+    }
+    free (prefix);
+    free (prev_prefix);
+    _cairo_output_stream_printf (surface->output,
+				 "  ]\n"
+				 ">>\n"
+				 "endobj\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_collect_dest (void *entry, void *closure)
+{
+    cairo_pdf_named_dest_t *dest = entry;
+    cairo_pdf_surface_t *surface = closure;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    ic->sorted_dests[ic->num_dests++] = dest;
+}
+
+static int
+_dest_compare (const void *a, const void *b)
+{
+    const cairo_pdf_named_dest_t * const *dest_a = a;
+    const cairo_pdf_named_dest_t * const *dest_b = b;
+
+    return strcmp ((*dest_a)->attrs.name, (*dest_b)->attrs.name);
+}
+
+static cairo_int_status_t
+_cairo_pdf_interchange_write_document_dests (cairo_pdf_surface_t *surface)
+{
+    int i;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    if (ic->num_dests == 0) {
+	ic->dests_res.id = 0;
+        return CAIRO_STATUS_SUCCESS;
+    }
+
+    ic->sorted_dests = calloc (ic->num_dests, sizeof (cairo_pdf_named_dest_t *));
+    if (unlikely (ic->sorted_dests == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    ic->num_dests = 0;
+    _cairo_hash_table_foreach (ic->named_dests, _collect_dest, surface);
+    qsort (ic->sorted_dests, ic->num_dests, sizeof (cairo_pdf_named_dest_t *), _dest_compare);
+
+    ic->dests_res = _cairo_pdf_surface_new_object (surface);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Names [\n",
+				 ic->dests_res.id);
+    for (i = 0; i < ic->num_dests; i++) {
+	cairo_pdf_named_dest_t *dest = ic->sorted_dests[i];
+	cairo_pdf_resource_t page_res;
+	double x = 0;
+	double y = 0;
+	double height;
+
+	if (dest->attrs.internal)
+	    continue;
+
+	if (dest->extents.valid) {
+	    x = dest->extents.extents.x;
+	    y = dest->extents.extents.y;
+	}
+
+	if (dest->attrs.x_valid)
+	    x = dest->attrs.x;
+
+	if (dest->attrs.y_valid)
+	    y = dest->attrs.y;
+
+	_cairo_array_copy_element (&surface->pages, dest->page - 1, &page_res);
+	_cairo_array_copy_element (&surface->page_heights, dest->page - 1, &height);
+	_cairo_output_stream_printf (surface->output,
+				     "   (%s) [%d 0 R /XYZ %f %f 0]\n",
+				     dest->attrs.name,
+				     page_res.id,
+				     x,
+				     height - y);
+    }
+    _cairo_output_stream_printf (surface->output,
+				     "  ]\n"
+				     ">>\n"
+				     "endobj\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_names_dict (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status;
+
+    status = _cairo_pdf_interchange_write_document_dests (surface);
+    if (unlikely (status))
+	return status;
+
+    surface->names_dict_res.id = 0;
+    if (ic->dests_res.id != 0) {
+	surface->names_dict_res = _cairo_pdf_surface_new_object (surface);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Dests %d 0 R >>\n"
+				     "endobj\n",
+				     surface->names_dict_res.id,
+				     ic->dests_res.id);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_pdf_interchange_write_docinfo (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    surface->docinfo_res = _cairo_pdf_surface_new_object (surface);
+    if (surface->docinfo_res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Producer (cairo %s (https://cairographics.org))\n",
+				 surface->docinfo_res.id,
+				 cairo_version_string ());
+
+    if (ic->docinfo.title)
+	_cairo_output_stream_printf (surface->output, "   /Title %s\n", ic->docinfo.title);
+
+    if (ic->docinfo.author)
+	_cairo_output_stream_printf (surface->output, "   /Author %s\n", ic->docinfo.author);
+
+    if (ic->docinfo.subject)
+	_cairo_output_stream_printf (surface->output, "   /Subject %s\n", ic->docinfo.subject);
+
+    if (ic->docinfo.keywords)
+	_cairo_output_stream_printf (surface->output, "   /Keywords %s\n", ic->docinfo.keywords);
+
+    if (ic->docinfo.creator)
+	_cairo_output_stream_printf (surface->output, "   /Creator %s\n", ic->docinfo.creator);
+
+    if (ic->docinfo.create_date)
+	_cairo_output_stream_printf (surface->output, "   /CreationDate %s\n", ic->docinfo.create_date);
+
+    if (ic->docinfo.mod_date)
+	_cairo_output_stream_printf (surface->output, "   /ModDate %s\n", ic->docinfo.mod_date);
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_interchange_begin_structure_tag (cairo_pdf_surface_t    *surface,
+					    cairo_tag_type_t        tag_type,
+					    const char             *name,
+					    const char             *attributes)
+{
+    int page_num, mcid;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = add_tree_node (surface, ic->current_node, name, &ic->current_node);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_tag_stack_set_top_data (&ic->analysis_tag_stack, ic->current_node);
+
+	if (tag_type & TAG_TYPE_LINK) {
+	    status = add_annotation (surface, ic->current_node, name, attributes);
+	    if (unlikely (status))
+		return status;
+
+	    cairo_list_add_tail (&ic->current_node->extents.link, &ic->extents_list);
+	}
+
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	ic->current_node = _cairo_tag_stack_top_elem (&ic->render_tag_stack)->data;
+	assert (ic->current_node != NULL);
+	if (is_leaf_node (ic->current_node)) {
+	    page_num = _cairo_array_num_elements (&surface->pages);
+	    add_mcid_to_node (surface, ic->current_node, page_num, &mcid);
+	    status = _cairo_pdf_operators_tag_begin (&surface->pdf_operators, name, mcid);
+	}
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_interchange_begin_dest_tag (cairo_pdf_surface_t    *surface,
+				       cairo_tag_type_t        tag_type,
+				       const char             *name,
+				       const char             *attributes)
+{
+    cairo_pdf_named_dest_t *dest;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	dest = calloc (1, sizeof (cairo_pdf_named_dest_t));
+	if (unlikely (dest == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	status = _cairo_tag_parse_dest_attributes (attributes, &dest->attrs);
+	if (unlikely (status))
+	    return status;
+
+	dest->page = _cairo_array_num_elements (&surface->pages);
+	init_named_dest_key (dest);
+	status = _cairo_hash_table_insert (ic->named_dests, &dest->base);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_tag_stack_set_top_data (&ic->analysis_tag_stack, dest);
+	cairo_list_add_tail (&dest->extents.link, &ic->extents_list);
+	ic->num_dests++;
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_tag_begin (cairo_pdf_surface_t    *surface,
+				  const char             *name,
+				  const char             *attributes)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_tag_type_t tag_type;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    void *ptr;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_tag_stack_push (&ic->analysis_tag_stack, name, attributes);
+
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	status = _cairo_tag_stack_push (&ic->render_tag_stack, name, attributes);
+	_cairo_array_copy_element (&ic->push_data, ic->push_data_index++, &ptr);
+	_cairo_tag_stack_set_top_data (&ic->render_tag_stack, ptr);
+    }
+
+    if (unlikely (status))
+	return status;
+
+    tag_type = _cairo_tag_get_type (name);
+    if (tag_type & TAG_TYPE_STRUCTURE) {
+	status = _cairo_pdf_interchange_begin_structure_tag (surface, tag_type, name, attributes);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (tag_type & TAG_TYPE_DEST) {
+	status = _cairo_pdf_interchange_begin_dest_tag (surface, tag_type, name, attributes);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	ptr = _cairo_tag_stack_top_elem (&ic->analysis_tag_stack)->data;
+	status = _cairo_array_append (&ic->push_data, &ptr);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_interchange_end_structure_tag (cairo_pdf_surface_t    *surface,
+					  cairo_tag_type_t        tag_type,
+					  cairo_tag_stack_elem_t *elem)
+{
+    const cairo_pdf_struct_tree_node_t *node;
+    struct tag_extents *tag, *next;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    assert (elem->data != NULL);
+    node = elem->data;
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	if (tag_type & TAG_TYPE_LINK) {
+	    cairo_list_foreach_entry_safe (tag, next, struct tag_extents,
+					   &ic->extents_list, link) {
+		if (tag == &node->extents) {
+		    cairo_list_del (&tag->link);
+		    break;
+		}
+	    }
+	}
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	if (is_leaf_node (ic->current_node)) {
+	    status = _cairo_pdf_operators_tag_end (&surface->pdf_operators);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    ic->current_node = ic->current_node->parent;
+    assert (ic->current_node != NULL);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_interchange_end_dest_tag (cairo_pdf_surface_t    *surface,
+				     cairo_tag_type_t        tag_type,
+				     cairo_tag_stack_elem_t *elem)
+{
+    struct tag_extents *tag, *next;
+    cairo_pdf_named_dest_t *dest;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	assert (elem->data != NULL);
+	dest = (cairo_pdf_named_dest_t *) elem->data;
+	cairo_list_foreach_entry_safe (tag, next, struct tag_extents,
+					   &ic->extents_list, link) {
+	    if (tag == &dest->extents) {
+		cairo_list_del (&tag->link);
+		break;
+	    }
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_tag_end (cairo_pdf_surface_t *surface,
+				const char          *name)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_tag_type_t tag_type;
+    cairo_tag_stack_elem_t *elem;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	status = _cairo_tag_stack_pop (&ic->analysis_tag_stack, name, &elem);
+    else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_RENDER)
+	status = _cairo_tag_stack_pop (&ic->render_tag_stack, name, &elem);
+
+    if (unlikely (status))
+	return status;
+
+    tag_type = _cairo_tag_get_type (name);
+    if (tag_type & TAG_TYPE_STRUCTURE) {
+	status = _cairo_pdf_interchange_end_structure_tag (surface, tag_type, elem);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    if (tag_type & TAG_TYPE_DEST) {
+	status = _cairo_pdf_interchange_end_dest_tag (surface, tag_type, elem);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+  cleanup:
+    _cairo_tag_stack_free_elem (elem);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_add_operation_extents (cairo_pdf_surface_t         *surface,
+					      const cairo_rectangle_int_t *extents)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    struct tag_extents *tag;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	cairo_list_foreach_entry (tag, struct tag_extents, &ic->extents_list, link) {
+	    if (tag->valid) {
+		_cairo_rectangle_union (&tag->extents, extents);
+	    } else {
+		tag->extents = *extents;
+		tag->valid = TRUE;
+	    }
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_begin_page_content (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    int page_num, mcid;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	_cairo_array_truncate (&ic->mcid_to_tree, 0);
+	_cairo_array_truncate (&ic->push_data, 0);
+	ic->begin_page_node = ic->current_node;
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	ic->push_data_index = 0;
+	ic->current_node = ic->begin_page_node;
+	if (ic->end_page_node && is_leaf_node (ic->end_page_node)) {
+	    page_num = _cairo_array_num_elements (&surface->pages);
+	    add_mcid_to_node (surface, ic->end_page_node, page_num, &mcid);
+	    status = _cairo_pdf_operators_tag_begin (&surface->pdf_operators,
+						     ic->end_page_node->name,
+						     mcid);
+	}
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_end_page_content (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	ic->end_page_node = ic->current_node;
+	if (is_leaf_node (ic->current_node))
+	    status = _cairo_pdf_operators_tag_end (&surface->pdf_operators);
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_write_page_objects (cairo_pdf_surface_t *surface)
+{
+    cairo_int_status_t status;
+
+    status = cairo_pdf_interchange_write_page_annots (surface);
+     if (unlikely (status))
+	return status;
+
+     cairo_pdf_interchange_clear_annotations (surface);
+
+    return cairo_pdf_interchange_write_page_parent_elems (surface);
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_write_document_objects (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_tag_stack_structure_type_t tag_type;
+
+    tag_type = _cairo_tag_stack_get_structure_type (&ic->analysis_tag_stack);
+    if (tag_type == TAG_TREE_TYPE_TAGGED || tag_type == TAG_TREE_TYPE_STRUCTURE) {
+
+	status = cairo_pdf_interchange_write_parent_tree (surface);
+	if (unlikely (status))
+	    return status;
+
+	status = cairo_pdf_interchange_write_struct_tree (surface);
+	if (unlikely (status))
+	    return status;
+
+	if (tag_type == TAG_TREE_TYPE_TAGGED)
+	    surface->tagged = TRUE;
+    }
+
+    status = cairo_pdf_interchange_write_outline (surface);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_pdf_interchange_write_page_labels (surface);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_pdf_interchange_write_names_dict (surface);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_pdf_interchange_write_docinfo (surface);
+
+    return status;
+}
+
+static void
+_cairo_pdf_interchange_set_create_date (cairo_pdf_surface_t *surface)
+{
+    time_t utc, local, offset;
+    struct tm tm_local, tm_utc;
+    char buf[50];
+    int buf_size;
+    char *p;
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    utc = time (NULL);
+    localtime_r (&utc, &tm_local);
+    strftime (buf, sizeof(buf), "(D:%Y%m%d%H%M%S", &tm_local);
+
+    /* strftime "%z" is non standard and does not work on windows (it prints zone name, not offset).
+     * Calculate time zone offset by comparing local and utc time_t values for the same time.
+     */
+    gmtime_r (&utc, &tm_utc);
+    tm_utc.tm_isdst = tm_local.tm_isdst;
+    local = mktime (&tm_utc);
+    offset = difftime (utc, local);
+
+    if (offset == 0) {
+	strcat (buf, "Z");
+    } else {
+	if (offset > 0) {
+	    strcat (buf, "+");
+	} else {
+	    strcat (buf, "-");
+	    offset = -offset;
+	}
+	p = buf + strlen (buf);
+	buf_size = sizeof (buf) - strlen (buf);
+	snprintf (p, buf_size, "%02d'%02d", (int)(offset/3600), (int)(offset%3600)/60);
+    }
+    strcat (buf, ")");
+    ic->docinfo.create_date = strdup (buf);
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_init (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_pdf_outline_entry_t *outline_root;
+    cairo_int_status_t status;
+
+    _cairo_tag_stack_init (&ic->analysis_tag_stack);
+    _cairo_tag_stack_init (&ic->render_tag_stack);
+    _cairo_array_init (&ic->push_data, sizeof(void *));
+    ic->struct_root = calloc (1, sizeof(cairo_pdf_struct_tree_node_t));
+    if (unlikely (ic->struct_root == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cairo_list_init (&ic->struct_root->children);
+    _cairo_array_init (&ic->struct_root->mcid, sizeof(struct page_mcid));
+    ic->current_node = ic->struct_root;
+    ic->begin_page_node = NULL;
+    ic->end_page_node = NULL;
+    _cairo_array_init (&ic->parent_tree, sizeof(cairo_pdf_resource_t));
+    _cairo_array_init (&ic->mcid_to_tree, sizeof(cairo_pdf_struct_tree_node_t *));
+    _cairo_array_init (&ic->annots, sizeof(cairo_pdf_annotation_t *));
+    ic->parent_tree_res.id = 0;
+    cairo_list_init (&ic->extents_list);
+    ic->named_dests = _cairo_hash_table_create (_named_dest_equal);
+    if (unlikely (ic->named_dests == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    ic->num_dests = 0;
+    ic->sorted_dests = NULL;
+    ic->dests_res.id = 0;
+
+    _cairo_array_init (&ic->outline, sizeof(cairo_pdf_outline_entry_t *));
+    outline_root = calloc (1, sizeof(cairo_pdf_outline_entry_t));
+    if (unlikely (outline_root == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    memset (&ic->docinfo, 0, sizeof (ic->docinfo));
+    _cairo_pdf_interchange_set_create_date (surface);
+    status = _cairo_array_append (&ic->outline, &outline_root);
+
+    return status;
+}
+
+static void
+_cairo_pdf_interchange_free_outlines (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    int num_elems, i;
+
+    num_elems = _cairo_array_num_elements (&ic->outline);
+    for (i = 0; i < num_elems; i++) {
+	cairo_pdf_outline_entry_t *outline;
+
+	_cairo_array_copy_element (&ic->outline, i, &outline);
+	free (outline->name);
+	free (outline->link_attrs.dest);
+	free (outline->link_attrs.uri);
+	free (outline->link_attrs.file);
+	free (outline);
+    }
+    _cairo_array_fini (&ic->outline);
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_fini (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+
+    _cairo_tag_stack_fini (&ic->analysis_tag_stack);
+    _cairo_tag_stack_fini (&ic->render_tag_stack);
+    _cairo_array_fini (&ic->push_data);
+    free_node (ic->struct_root);
+    _cairo_array_fini (&ic->mcid_to_tree);
+    cairo_pdf_interchange_clear_annotations (surface);
+    _cairo_array_fini (&ic->annots);
+    _cairo_array_fini (&ic->parent_tree);
+    _cairo_hash_table_foreach (ic->named_dests, _named_dest_pluck, ic->named_dests);
+    _cairo_hash_table_destroy (ic->named_dests);
+    free (ic->sorted_dests);
+    _cairo_pdf_interchange_free_outlines (surface);
+    free (ic->docinfo.title);
+    free (ic->docinfo.author);
+    free (ic->docinfo.subject);
+    free (ic->docinfo.keywords);
+    free (ic->docinfo.creator);
+    free (ic->docinfo.create_date);
+    free (ic->docinfo.mod_date);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_add_outline (cairo_pdf_surface_t        *surface,
+				    int                         parent_id,
+				    const char                 *name,
+				    const char                 *link_attribs,
+				    cairo_pdf_outline_flags_t   flags,
+				    int                        *id)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_pdf_outline_entry_t *outline;
+    cairo_pdf_outline_entry_t *parent;
+    cairo_int_status_t status;
+
+    if (parent_id < 0 || parent_id >= (int)_cairo_array_num_elements (&ic->outline))
+	return CAIRO_STATUS_SUCCESS;
+
+    outline = _cairo_malloc (sizeof(cairo_pdf_outline_entry_t));
+    if (unlikely (outline == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_tag_parse_link_attributes (link_attribs, &outline->link_attrs);
+    if (unlikely (status)) {
+	free (outline);
+	return status;
+    }
+
+    outline->res = _cairo_pdf_surface_new_object (surface);
+    if (outline->res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    outline->name = strdup (name);
+    outline->flags = flags;
+    outline->count = 0;
+
+    _cairo_array_copy_element (&ic->outline, parent_id, &parent);
+
+    outline->parent = parent;
+    outline->first_child = NULL;
+    outline->last_child = NULL;
+    outline->next = NULL;
+    if (parent->last_child) {
+	parent->last_child->next = outline;
+	outline->prev = parent->last_child;
+	parent->last_child = outline;
+    } else {
+	parent->first_child = outline;
+	parent->last_child = outline;
+	outline->prev = NULL;
+    }
+
+    *id = _cairo_array_num_elements (&ic->outline);
+    status = _cairo_array_append (&ic->outline, &outline);
+    if (unlikely (status))
+	return status;
+
+    /* Update Count */
+    outline = outline->parent;
+    while (outline) {
+	if (outline->flags & CAIRO_PDF_OUTLINE_FLAG_OPEN) {
+	    outline->count++;
+	} else {
+	    outline->count--;
+	    break;
+	}
+	outline = outline->parent;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Date must be in the following format:
+ *
+ *     YYYY-MM-DDThh:mm:ss[Z+-]hh:mm
+ *
+ * Only the year is required. If a field is included all preceding
+ * fields must be included.
+ */
+static char *
+iso8601_to_pdf_date_string (const char *iso)
+{
+    char buf[40];
+    const char *p;
+    int i;
+
+    /* Check that utf8 contains only the characters "0123456789-T:Z+" */
+    p = iso;
+    while (*p) {
+       if (!_cairo_isdigit (*p) && *p != '-' && *p != 'T' &&
+           *p != ':' && *p != 'Z' && *p != '+')
+           return NULL;
+       p++;
+    }
+
+    p = iso;
+    strcpy (buf, "(");
+
+   /* YYYY (required) */
+    if (strlen (p) < 4)
+       return NULL;
+
+    strncat (buf, p, 4);
+    p += 4;
+
+    /* -MM, -DD, Thh, :mm, :ss */
+    for (i = 0; i < 5; i++) {
+	if (strlen (p) < 3)
+	    goto finish;
+
+	strncat (buf, p + 1, 2);
+	p += 3;
+    }
+
+    /* Z, +, - */
+    if (strlen (p) < 1)
+       goto finish;
+    strncat (buf, p, 1);
+    p += 1;
+
+    /* hh */
+    if (strlen (p) < 2)
+	goto finish;
+
+    strncat (buf, p, 2);
+    strcat (buf, "'");
+    p += 2;
+
+    /* :mm */
+    if (strlen (p) < 3)
+	goto finish;
+
+    strncat (buf, p + 1, 3);
+
+  finish:
+    strcat (buf, ")");
+    return strdup (buf);
+}
+
+cairo_int_status_t
+_cairo_pdf_interchange_set_metadata (cairo_pdf_surface_t  *surface,
+				     cairo_pdf_metadata_t  metadata,
+				     const char           *utf8)
+{
+    cairo_pdf_interchange_t *ic = &surface->interchange;
+    cairo_status_t status;
+    char *s = NULL;
+
+    if (utf8) {
+	if (metadata == CAIRO_PDF_METADATA_CREATE_DATE ||
+	    metadata == CAIRO_PDF_METADATA_MOD_DATE) {
+	    s = iso8601_to_pdf_date_string (utf8);
+	} else {
+	    status = _cairo_utf8_to_pdf_string (utf8, &s);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    switch (metadata) {
+	case CAIRO_PDF_METADATA_TITLE:
+	    free (ic->docinfo.title);
+	    ic->docinfo.title = s;
+	    break;
+	case CAIRO_PDF_METADATA_AUTHOR:
+	    free (ic->docinfo.author);
+	    ic->docinfo.author = s;
+	    break;
+	case CAIRO_PDF_METADATA_SUBJECT:
+	    free (ic->docinfo.subject);
+	    ic->docinfo.subject = s;
+	    break;
+	case CAIRO_PDF_METADATA_KEYWORDS:
+	    free (ic->docinfo.keywords);
+	    ic->docinfo.keywords = s;
+	    break;
+	case CAIRO_PDF_METADATA_CREATOR:
+	    free (ic->docinfo.creator);
+	    ic->docinfo.creator = s;
+	    break;
+	case CAIRO_PDF_METADATA_CREATE_DATE:
+	    free (ic->docinfo.create_date);
+	    ic->docinfo.create_date = s;
+	    break;
+	case CAIRO_PDF_METADATA_MOD_DATE:
+	    free (ic->docinfo.mod_date);
+	    ic->docinfo.mod_date = s;
+	    break;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-operators-private.h b/libs/cairo-1.16.0/src/cairo-pdf-operators-private.h
new file mode 100644
index 0000000..ed8be7f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-operators-private.h
@@ -0,0 +1,184 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ * Copyright © 2006 Red Hat, Inc
+ * Copyright © 2007 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_PDF_OPERATORS_H
+#define CAIRO_PDF_OPERATORS_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-types-private.h"
+
+/* The glyph buffer size is based on the expected maximum glyphs in a
+ * line so that an entire line can be emitted in as one string. If the
+ * glyphs in a line exceeds this size the only downside is the slight
+ * overhead of emitting two strings.
+ */
+#define PDF_GLYPH_BUFFER_SIZE 200
+
+typedef cairo_int_status_t
+(*cairo_pdf_operators_use_font_subset_t) (unsigned int  font_id,
+					  unsigned int  subset_id,
+					  void         *closure);
+
+typedef struct _cairo_pdf_glyph {
+    unsigned int glyph_index;
+    double x_position;
+    double x_advance;
+} cairo_pdf_glyph_t;
+
+typedef struct _cairo_pdf_operators {
+    cairo_output_stream_t *stream;
+    cairo_matrix_t cairo_to_pdf;
+    cairo_scaled_font_subsets_t *font_subsets;
+    cairo_pdf_operators_use_font_subset_t use_font_subset;
+    void *use_font_subset_closure;
+    cairo_bool_t ps_output; /* output is for PostScript */
+    cairo_bool_t use_actual_text;
+    cairo_bool_t in_text_object; /* inside BT/ET pair */
+
+    /* PDF text state */
+    cairo_bool_t is_new_text_object; /* text object started but matrix and font not yet selected */
+    unsigned int font_id;
+    unsigned int subset_id;
+    cairo_matrix_t text_matrix; /* PDF text matrix (Tlm in the PDF reference) */
+    cairo_matrix_t cairo_to_pdftext; /* translate cairo coords to PDF text space */
+    cairo_matrix_t font_matrix_inverse;
+    double cur_x; /* Current position in PDF text space (Tm in the PDF reference) */
+    double cur_y;
+    int hex_width;
+    cairo_bool_t is_latin;
+    int num_glyphs;
+    double glyph_buf_x_pos;
+    cairo_pdf_glyph_t glyphs[PDF_GLYPH_BUFFER_SIZE];
+
+    /* PDF line style */
+    cairo_bool_t         has_line_style;
+    double		 line_width;
+    cairo_line_cap_t	 line_cap;
+    cairo_line_join_t	 line_join;
+    double		 miter_limit;
+    cairo_bool_t         has_dashes;
+} cairo_pdf_operators_t;
+
+cairo_private void
+_cairo_pdf_operators_init (cairo_pdf_operators_t       *pdf_operators,
+			   cairo_output_stream_t       *stream,
+			   cairo_matrix_t 	       *cairo_to_pdf,
+			   cairo_scaled_font_subsets_t *font_subsets,
+			   cairo_bool_t                 ps);
+
+cairo_private cairo_status_t
+_cairo_pdf_operators_fini (cairo_pdf_operators_t       *pdf_operators);
+
+cairo_private void
+_cairo_pdf_operators_set_font_subsets_callback (cairo_pdf_operators_t 		     *pdf_operators,
+						cairo_pdf_operators_use_font_subset_t use_font_subset,
+						void				     *closure);
+
+cairo_private void
+_cairo_pdf_operators_set_stream (cairo_pdf_operators_t 	 *pdf_operators,
+				 cairo_output_stream_t   *stream);
+
+
+cairo_private void
+_cairo_pdf_operators_set_cairo_to_pdf_matrix (cairo_pdf_operators_t *pdf_operators,
+					      cairo_matrix_t 	    *cairo_to_pdf);
+
+cairo_private void
+_cairo_pdf_operators_enable_actual_text (cairo_pdf_operators_t *pdf_operators,
+					 cairo_bool_t 	  	enable);
+
+cairo_private cairo_status_t
+_cairo_pdf_operators_flush (cairo_pdf_operators_t	 *pdf_operators);
+
+cairo_private void
+_cairo_pdf_operators_reset (cairo_pdf_operators_t	 *pdf_operators);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_clip (cairo_pdf_operators_t	*pdf_operators,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		 fill_rule);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_emit_stroke_style (cairo_pdf_operators_t		*pdf_operators,
+					const cairo_stroke_style_t	*style,
+					double				 scale);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_stroke (cairo_pdf_operators_t	*pdf_operators,
+			     const cairo_path_fixed_t	*path,
+			     const cairo_stroke_style_t	*style,
+			     const cairo_matrix_t	*ctm,
+			     const cairo_matrix_t	*ctm_inverse);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_fill (cairo_pdf_operators_t	*pdf_operators,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		fill_rule);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_fill_stroke (cairo_pdf_operators_t		*pdf_operators,
+				  const cairo_path_fixed_t	*path,
+				  cairo_fill_rule_t		 fill_rule,
+				  const cairo_stroke_style_t	*style,
+				  const cairo_matrix_t		*ctm,
+				  const cairo_matrix_t		*ctm_inverse);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_show_text_glyphs (cairo_pdf_operators_t	  *pdf_operators,
+				       const char                 *utf8,
+				       int                         utf8_len,
+				       cairo_glyph_t              *glyphs,
+				       int                         num_glyphs,
+				       const cairo_text_cluster_t *clusters,
+				       int                         num_clusters,
+				       cairo_text_cluster_flags_t  cluster_flags,
+				       cairo_scaled_font_t	  *scaled_font);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_tag_begin (cairo_pdf_operators_t *pdf_operators,
+				const char            *tag_name,
+				int                    mcid);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_operators_tag_end (cairo_pdf_operators_t *pdf_operators);
+
+#endif /* CAIRO_PDF_OPERATORS_H */
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-operators.c b/libs/cairo-1.16.0/src/cairo-pdf-operators.c
new file mode 100644
index 0000000..491ef8c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-operators.c
@@ -0,0 +1,1595 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ * Copyright © 2006 Red Hat, Inc
+ * Copyright © 2007, 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_PDF_OPERATORS
+
+#include "cairo-error-private.h"
+#include "cairo-pdf-operators-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+
+static cairo_status_t
+_cairo_pdf_operators_end_text (cairo_pdf_operators_t    *pdf_operators);
+
+
+void
+_cairo_pdf_operators_init (cairo_pdf_operators_t	*pdf_operators,
+			   cairo_output_stream_t	*stream,
+			   cairo_matrix_t		*cairo_to_pdf,
+			   cairo_scaled_font_subsets_t  *font_subsets,
+			   cairo_bool_t                  ps)
+{
+    pdf_operators->stream = stream;
+    pdf_operators->cairo_to_pdf = *cairo_to_pdf;
+    pdf_operators->font_subsets = font_subsets;
+    pdf_operators->ps_output = ps;
+    pdf_operators->use_font_subset = NULL;
+    pdf_operators->use_font_subset_closure = NULL;
+    pdf_operators->in_text_object = FALSE;
+    pdf_operators->num_glyphs = 0;
+    pdf_operators->has_line_style = FALSE;
+    pdf_operators->use_actual_text = FALSE;
+}
+
+cairo_status_t
+_cairo_pdf_operators_fini (cairo_pdf_operators_t	*pdf_operators)
+{
+    return _cairo_pdf_operators_flush (pdf_operators);
+}
+
+void
+_cairo_pdf_operators_set_font_subsets_callback (cairo_pdf_operators_t		     *pdf_operators,
+						cairo_pdf_operators_use_font_subset_t use_font_subset,
+						void				     *closure)
+{
+    pdf_operators->use_font_subset = use_font_subset;
+    pdf_operators->use_font_subset_closure = closure;
+}
+
+/* Change the output stream to a different stream.
+ * _cairo_pdf_operators_flush() should always be called before calling
+ * this function.
+ */
+void
+_cairo_pdf_operators_set_stream (cairo_pdf_operators_t	 *pdf_operators,
+				 cairo_output_stream_t   *stream)
+{
+    pdf_operators->stream = stream;
+    pdf_operators->has_line_style = FALSE;
+}
+
+void
+_cairo_pdf_operators_set_cairo_to_pdf_matrix (cairo_pdf_operators_t *pdf_operators,
+					      cairo_matrix_t	    *cairo_to_pdf)
+{
+    pdf_operators->cairo_to_pdf = *cairo_to_pdf;
+    pdf_operators->has_line_style = FALSE;
+}
+
+cairo_private void
+_cairo_pdf_operators_enable_actual_text (cairo_pdf_operators_t *pdf_operators,
+					 cairo_bool_t 	  	enable)
+{
+    pdf_operators->use_actual_text = enable;
+}
+
+/* Finish writing out any pending commands to the stream. This
+ * function must be called by the surface before emitting anything
+ * into the PDF stream.
+ *
+ * pdf_operators may leave the emitted PDF for some operations
+ * unfinished in case subsequent operations can be merged. This
+ * function will finish off any incomplete operation so the stream
+ * will be in a state where the surface may emit its own PDF
+ * operations (eg changing patterns).
+ *
+ */
+cairo_status_t
+_cairo_pdf_operators_flush (cairo_pdf_operators_t	 *pdf_operators)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (pdf_operators->in_text_object)
+	status = _cairo_pdf_operators_end_text (pdf_operators);
+
+    return status;
+}
+
+/* Reset the known graphics state of the PDF consumer. ie no
+ * assumptions will be made about the state. The next time a
+ * particular graphics state is required (eg line width) the state
+ * operator is always emitted and then remembered for subsequent
+ * operations.
+ *
+ * This should be called when starting a new stream or after emitting
+ * the 'Q' operator (where pdf-operators functions were called inside
+ * the q/Q pair).
+ */
+void
+_cairo_pdf_operators_reset (cairo_pdf_operators_t *pdf_operators)
+{
+    pdf_operators->has_line_style = FALSE;
+}
+
+/* A word wrap stream can be used as a filter to do word wrapping on
+ * top of an existing output stream. The word wrapping is quite
+ * simple, using isspace to determine characters that separate
+ * words. Any word that will cause the column count exceed the given
+ * max_column will have a '\n' character emitted before it.
+ *
+ * The stream is careful to maintain integrity for words that cross
+ * the boundary from one call to write to the next.
+ *
+ * Note: This stream does not guarantee that the output will never
+ * exceed max_column. In particular, if a single word is larger than
+ * max_column it will not be broken up.
+ */
+
+typedef enum _cairo_word_wrap_state {
+    WRAP_STATE_DELIMITER,
+    WRAP_STATE_WORD,
+    WRAP_STATE_STRING,
+    WRAP_STATE_HEXSTRING
+} cairo_word_wrap_state_t;
+
+
+typedef struct _word_wrap_stream {
+    cairo_output_stream_t base;
+    cairo_output_stream_t *output;
+    int max_column;
+    cairo_bool_t ps_output;
+    int column;
+    cairo_word_wrap_state_t state;
+    cairo_bool_t in_escape;
+    int		 escape_digits;
+} word_wrap_stream_t;
+
+
+
+/* Emit word bytes up to the next delimiter character */
+static int
+_word_wrap_stream_count_word_up_to (word_wrap_stream_t *stream,
+				   const unsigned char *data, int length)
+{
+    const unsigned char *s = data;
+    int count = 0;
+
+    while (length--) {
+	if (_cairo_isspace (*s) || *s == '<' || *s == '(') {
+	    stream->state = WRAP_STATE_DELIMITER;
+	    break;
+	}
+
+	count++;
+	stream->column++;
+	s++;
+    }
+
+    if (count)
+	_cairo_output_stream_write (stream->output, data, count);
+
+    return count;
+}
+
+
+/* Emit hexstring bytes up to either the end of the ASCII hexstring or the number
+ * of columns remaining.
+ */
+static int
+_word_wrap_stream_count_hexstring_up_to (word_wrap_stream_t *stream,
+					 const unsigned char *data, int length)
+{
+    const unsigned char *s = data;
+    int count = 0;
+    cairo_bool_t newline = FALSE;
+
+    while (length--) {
+	count++;
+	stream->column++;
+	if (*s == '>') {
+	    stream->state = WRAP_STATE_DELIMITER;
+	    break;
+	}
+
+	if (stream->column > stream->max_column) {
+	    newline = TRUE;
+	    break;
+	}
+	s++;
+    }
+
+    if (count)
+	_cairo_output_stream_write (stream->output, data, count);
+
+    if (newline) {
+	_cairo_output_stream_printf (stream->output, "\n");
+	stream->column = 0;
+    }
+
+    return count;
+}
+
+/* Count up to either the end of the string or the number of columns
+ * remaining.
+ */
+static int
+_word_wrap_stream_count_string_up_to (word_wrap_stream_t *stream,
+				      const unsigned char *data, int length)
+{
+    const unsigned char *s = data;
+    int count = 0;
+    cairo_bool_t newline = FALSE;
+
+    while (length--) {
+	count++;
+	stream->column++;
+	if (!stream->in_escape) {
+	    if (*s == ')') {
+		stream->state = WRAP_STATE_DELIMITER;
+		break;
+	    }
+	    if (*s == '\\') {
+		stream->in_escape = TRUE;
+		stream->escape_digits = 0;
+	    } else if (stream->ps_output && stream->column > stream->max_column) {
+		newline = TRUE;
+		break;
+	    }
+	} else {
+	    if (!_cairo_isdigit(*s) || ++stream->escape_digits == 3)
+		stream->in_escape = FALSE;
+	}
+	s++;
+    }
+
+    if (count)
+	_cairo_output_stream_write (stream->output, data, count);
+
+    if (newline) {
+	_cairo_output_stream_printf (stream->output, "\\\n");
+	stream->column = 0;
+    }
+
+    return count;
+}
+
+static cairo_status_t
+_word_wrap_stream_write (cairo_output_stream_t  *base,
+			 const unsigned char	*data,
+			 unsigned int		 length)
+{
+    word_wrap_stream_t *stream = (word_wrap_stream_t *) base;
+    int count;
+
+    while (length) {
+	switch (stream->state) {
+	case WRAP_STATE_WORD:
+	    count = _word_wrap_stream_count_word_up_to (stream, data, length);
+	    break;
+	case WRAP_STATE_HEXSTRING:
+	    count = _word_wrap_stream_count_hexstring_up_to (stream, data, length);
+	    break;
+	case WRAP_STATE_STRING:
+	    count = _word_wrap_stream_count_string_up_to (stream, data, length);
+	    break;
+	case WRAP_STATE_DELIMITER:
+	    count = 1;
+	    stream->column++;
+	    if (*data == '\n' || stream->column >= stream->max_column) {
+		_cairo_output_stream_printf (stream->output, "\n");
+		stream->column = 0;
+	    }
+	    if (*data == '<') {
+		stream->state = WRAP_STATE_HEXSTRING;
+	    } else if (*data == '(') {
+		stream->state = WRAP_STATE_STRING;
+	    } else if (!_cairo_isspace (*data)) {
+		stream->state = WRAP_STATE_WORD;
+	    }
+	    if (*data != '\n')
+		_cairo_output_stream_write (stream->output, data, 1);
+	    break;
+
+	default:
+	    ASSERT_NOT_REACHED;
+	    count = length;
+	    break;
+	}
+	data += count;
+	length -= count;
+    }
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+static cairo_status_t
+_word_wrap_stream_close (cairo_output_stream_t *base)
+{
+    word_wrap_stream_t *stream = (word_wrap_stream_t *) base;
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+static cairo_output_stream_t *
+_word_wrap_stream_create (cairo_output_stream_t *output, cairo_bool_t ps, int max_column)
+{
+    word_wrap_stream_t *stream;
+
+    if (output->status)
+	return _cairo_output_stream_create_in_error (output->status);
+
+    stream = _cairo_malloc (sizeof (word_wrap_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       _word_wrap_stream_write,
+			       NULL,
+			       _word_wrap_stream_close);
+    stream->output = output;
+    stream->max_column = max_column;
+    stream->ps_output = ps;
+    stream->column = 0;
+    stream->state = WRAP_STATE_DELIMITER;
+    stream->in_escape = FALSE;
+    stream->escape_digits = 0;
+
+    return &stream->base;
+}
+
+typedef struct _pdf_path_info {
+    cairo_output_stream_t   *output;
+    cairo_matrix_t	    *path_transform;
+    cairo_line_cap_t         line_cap;
+    cairo_point_t            last_move_to_point;
+    cairo_bool_t             has_sub_path;
+} pdf_path_info_t;
+
+static cairo_status_t
+_cairo_pdf_path_move_to (void *closure,
+			 const cairo_point_t *point)
+{
+    pdf_path_info_t *info = closure;
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    info->last_move_to_point = *point;
+    info->has_sub_path = FALSE;
+    cairo_matrix_transform_point (info->path_transform, &x, &y);
+    _cairo_output_stream_printf (info->output,
+				 "%g %g m ", x, y);
+
+    return _cairo_output_stream_get_status (info->output);
+}
+
+static cairo_status_t
+_cairo_pdf_path_line_to (void *closure,
+			 const cairo_point_t *point)
+{
+    pdf_path_info_t *info = closure;
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (info->line_cap != CAIRO_LINE_CAP_ROUND &&
+	! info->has_sub_path &&
+	point->x == info->last_move_to_point.x &&
+	point->y == info->last_move_to_point.y)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    info->has_sub_path = TRUE;
+    cairo_matrix_transform_point (info->path_transform, &x, &y);
+    _cairo_output_stream_printf (info->output,
+				 "%g %g l ", x, y);
+
+    return _cairo_output_stream_get_status (info->output);
+}
+
+static cairo_status_t
+_cairo_pdf_path_curve_to (void          *closure,
+			  const cairo_point_t *b,
+			  const cairo_point_t *c,
+			  const cairo_point_t *d)
+{
+    pdf_path_info_t *info = closure;
+    double bx = _cairo_fixed_to_double (b->x);
+    double by = _cairo_fixed_to_double (b->y);
+    double cx = _cairo_fixed_to_double (c->x);
+    double cy = _cairo_fixed_to_double (c->y);
+    double dx = _cairo_fixed_to_double (d->x);
+    double dy = _cairo_fixed_to_double (d->y);
+
+    info->has_sub_path = TRUE;
+    cairo_matrix_transform_point (info->path_transform, &bx, &by);
+    cairo_matrix_transform_point (info->path_transform, &cx, &cy);
+    cairo_matrix_transform_point (info->path_transform, &dx, &dy);
+    _cairo_output_stream_printf (info->output,
+				 "%g %g %g %g %g %g c ",
+				 bx, by, cx, cy, dx, dy);
+    return _cairo_output_stream_get_status (info->output);
+}
+
+static cairo_status_t
+_cairo_pdf_path_close_path (void *closure)
+{
+    pdf_path_info_t *info = closure;
+
+    if (info->line_cap != CAIRO_LINE_CAP_ROUND &&
+	! info->has_sub_path)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_output_stream_printf (info->output,
+				 "h\n");
+
+    return _cairo_output_stream_get_status (info->output);
+}
+
+static cairo_status_t
+_cairo_pdf_path_rectangle (pdf_path_info_t *info, cairo_box_t *box)
+{
+    double x1 = _cairo_fixed_to_double (box->p1.x);
+    double y1 = _cairo_fixed_to_double (box->p1.y);
+    double x2 = _cairo_fixed_to_double (box->p2.x);
+    double y2 = _cairo_fixed_to_double (box->p2.y);
+
+    cairo_matrix_transform_point (info->path_transform, &x1, &y1);
+    cairo_matrix_transform_point (info->path_transform, &x2, &y2);
+    _cairo_output_stream_printf (info->output,
+				 "%g %g %g %g re ",
+				 x1, y1, x2 - x1, y2 - y1);
+
+    return _cairo_output_stream_get_status (info->output);
+}
+
+/* The line cap value is needed to workaround the fact that PostScript
+ * and PDF semantics for stroking degenerate sub-paths do not match
+ * cairo semantics. (PostScript draws something for any line cap
+ * value, while cairo draws something only for round caps).
+ *
+ * When using this function to emit a path to be filled, rather than
+ * stroked, simply pass %CAIRO_LINE_CAP_ROUND which will guarantee that
+ * the stroke workaround will not modify the path being emitted.
+ */
+static cairo_status_t
+_cairo_pdf_operators_emit_path (cairo_pdf_operators_t	*pdf_operators,
+				const cairo_path_fixed_t*path,
+				cairo_matrix_t          *path_transform,
+				cairo_line_cap_t         line_cap)
+{
+    cairo_output_stream_t *word_wrap;
+    cairo_status_t status, status2;
+    pdf_path_info_t info;
+    cairo_box_t box;
+
+    word_wrap = _word_wrap_stream_create (pdf_operators->stream, pdf_operators->ps_output, 72);
+    status = _cairo_output_stream_get_status (word_wrap);
+    if (unlikely (status))
+	return _cairo_output_stream_destroy (word_wrap);
+
+    info.output = word_wrap;
+    info.path_transform = path_transform;
+    info.line_cap = line_cap;
+    if (_cairo_path_fixed_is_rectangle (path, &box) &&
+	((path_transform->xx == 0 && path_transform->yy == 0) ||
+	 (path_transform->xy == 0 && path_transform->yx == 0))) {
+	status = _cairo_pdf_path_rectangle (&info, &box);
+    } else {
+	status = _cairo_path_fixed_interpret (path,
+					      _cairo_pdf_path_move_to,
+					      _cairo_pdf_path_line_to,
+					      _cairo_pdf_path_curve_to,
+					      _cairo_pdf_path_close_path,
+					      &info);
+    }
+
+    status2 = _cairo_output_stream_destroy (word_wrap);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_clip (cairo_pdf_operators_t	*pdf_operators,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		 fill_rule)
+{
+    const char *pdf_operator;
+    cairo_status_t status;
+
+    if (pdf_operators->in_text_object) {
+	status = _cairo_pdf_operators_end_text (pdf_operators);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (! path->has_current_point) {
+	/* construct an empty path */
+	_cairo_output_stream_printf (pdf_operators->stream, "0 0 m ");
+    } else {
+	status = _cairo_pdf_operators_emit_path (pdf_operators,
+						 path,
+						 &pdf_operators->cairo_to_pdf,
+						 CAIRO_LINE_CAP_ROUND);
+	if (unlikely (status))
+	    return status;
+    }
+
+    switch (fill_rule) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FILL_RULE_WINDING:
+	pdf_operator = "W";
+	break;
+    case CAIRO_FILL_RULE_EVEN_ODD:
+	pdf_operator = "W*";
+	break;
+    }
+
+    _cairo_output_stream_printf (pdf_operators->stream,
+				 "%s n\n",
+				 pdf_operator);
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+static int
+_cairo_pdf_line_cap (cairo_line_cap_t cap)
+{
+    switch (cap) {
+    case CAIRO_LINE_CAP_BUTT:
+	return 0;
+    case CAIRO_LINE_CAP_ROUND:
+	return 1;
+    case CAIRO_LINE_CAP_SQUARE:
+	return 2;
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+static int
+_cairo_pdf_line_join (cairo_line_join_t join)
+{
+    switch (join) {
+    case CAIRO_LINE_JOIN_MITER:
+	return 0;
+    case CAIRO_LINE_JOIN_ROUND:
+	return 1;
+    case CAIRO_LINE_JOIN_BEVEL:
+	return 2;
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_emit_stroke_style (cairo_pdf_operators_t		*pdf_operators,
+					const cairo_stroke_style_t	*style,
+					double				 scale)
+{
+    double *dash = style->dash;
+    int num_dashes = style->num_dashes;
+    double dash_offset = style->dash_offset;
+    double line_width = style->line_width * scale;
+
+    /* PostScript has "special needs" when it comes to zero-length
+     * dash segments with butt caps. It apparently (at least
+     * according to ghostscript) draws hairlines for this
+     * case. That's not what the cairo semantics want, so we first
+     * touch up the array to eliminate any 0.0 values that will
+     * result in "on" segments.
+     */
+    if (num_dashes && style->line_cap == CAIRO_LINE_CAP_BUTT) {
+	int i;
+
+	/* If there's an odd number of dash values they will each get
+	 * interpreted as both on and off. So we first explicitly
+	 * expand the array to remove the duplicate usage so that we
+	 * can modify some of the values.
+	 */
+	if (num_dashes % 2) {
+	    dash = _cairo_malloc_abc (num_dashes, 2, sizeof (double));
+	    if (unlikely (dash == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (dash, style->dash, num_dashes * sizeof (double));
+	    memcpy (dash + num_dashes, style->dash, num_dashes * sizeof (double));
+
+	    num_dashes *= 2;
+	}
+
+	for (i = 0; i < num_dashes; i += 2) {
+	    if (dash[i] == 0.0) {
+		/* Do not modify the dashes in-place, as we may need to also
+		 * replay this stroke to an image fallback.
+		 */
+		if (dash == style->dash) {
+		    dash = _cairo_malloc_ab (num_dashes, sizeof (double));
+		    if (unlikely (dash == NULL))
+			return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		    memcpy (dash, style->dash, num_dashes * sizeof (double));
+		}
+
+		/* If we're at the front of the list, we first rotate
+		 * two elements from the end of the list to the front
+		 * of the list before folding away the 0.0. Or, if
+		 * there are only two dash elements, then there is
+		 * nothing at all to draw.
+		 */
+		if (i == 0) {
+		    double last_two[2];
+
+		    if (num_dashes == 2) {
+			free (dash);
+			return CAIRO_INT_STATUS_NOTHING_TO_DO;
+		    }
+
+		    /* The cases of num_dashes == 0, 1, or 3 elements
+		     * cannot exist, so the rotation of 2 elements
+		     * will always be safe */
+		    memcpy (last_two, dash + num_dashes - 2, sizeof (last_two));
+		    memmove (dash + 2, dash, (num_dashes - 2) * sizeof (double));
+		    memcpy (dash, last_two, sizeof (last_two));
+		    dash_offset += dash[0] + dash[1];
+		    i = 2;
+		}
+		dash[i-1] += dash[i+1];
+		num_dashes -= 2;
+		memmove (dash + i, dash + i + 2, (num_dashes - i) * sizeof (double));
+		/* If we might have just rotated, it's possible that
+		 * we rotated a 0.0 value to the front of the list.
+		 * Set i to -2 so it will get incremented to 0. */
+		if (i == 2)
+		    i = -2;
+	    }
+	}
+    }
+
+    if (!pdf_operators->has_line_style || pdf_operators->line_width != line_width) {
+	_cairo_output_stream_printf (pdf_operators->stream,
+				     "%f w\n",
+				     line_width);
+	pdf_operators->line_width = line_width;
+    }
+
+    if (!pdf_operators->has_line_style || pdf_operators->line_cap != style->line_cap) {
+	_cairo_output_stream_printf (pdf_operators->stream,
+				     "%d J\n",
+				     _cairo_pdf_line_cap (style->line_cap));
+	pdf_operators->line_cap = style->line_cap;
+    }
+
+    if (!pdf_operators->has_line_style || pdf_operators->line_join != style->line_join) {
+	_cairo_output_stream_printf (pdf_operators->stream,
+				     "%d j\n",
+				     _cairo_pdf_line_join (style->line_join));
+	pdf_operators->line_join = style->line_join;
+    }
+
+    if (num_dashes) {
+	int d;
+
+	_cairo_output_stream_printf (pdf_operators->stream, "[");
+	for (d = 0; d < num_dashes; d++)
+	    _cairo_output_stream_printf (pdf_operators->stream, " %f", dash[d] * scale);
+	_cairo_output_stream_printf (pdf_operators->stream, "] %f d\n",
+				     dash_offset * scale);
+	pdf_operators->has_dashes = TRUE;
+    } else if (!pdf_operators->has_line_style || pdf_operators->has_dashes) {
+	_cairo_output_stream_printf (pdf_operators->stream, "[] 0.0 d\n");
+	pdf_operators->has_dashes = FALSE;
+    }
+    if (dash != style->dash)
+        free (dash);
+
+    if (!pdf_operators->has_line_style || pdf_operators->miter_limit != style->miter_limit) {
+	_cairo_output_stream_printf (pdf_operators->stream,
+				     "%f M ",
+				     style->miter_limit < 1.0 ? 1.0 : style->miter_limit);
+	pdf_operators->miter_limit = style->miter_limit;
+    }
+    pdf_operators->has_line_style = TRUE;
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+/* Scale the matrix so the largest absolute value of the non
+ * translation components is 1.0. Return the scale required to restore
+ * the matrix to the original values.
+ *
+ * eg the matrix  [ 100  0  0  50   20   10  ]
+ *
+ * is rescaled to [  1   0  0  0.5  0.2  0.1 ]
+ * and the scale returned is 100
+ */
+static void
+_cairo_matrix_factor_out_scale (cairo_matrix_t *m, double *scale)
+{
+    double s;
+
+    s = fabs (m->xx);
+    if (fabs (m->xy) > s)
+	s = fabs (m->xy);
+    if (fabs (m->yx) > s)
+	s = fabs (m->yx);
+    if (fabs (m->yy) > s)
+	s = fabs (m->yy);
+    *scale = s;
+    s = 1.0/s;
+    cairo_matrix_scale (m, s, s);
+}
+
+static cairo_int_status_t
+_cairo_pdf_operators_emit_stroke (cairo_pdf_operators_t		*pdf_operators,
+				  const cairo_path_fixed_t	*path,
+				  const cairo_stroke_style_t	*style,
+				  const cairo_matrix_t		*ctm,
+				  const cairo_matrix_t		*ctm_inverse,
+				  const char			*pdf_operator)
+{
+    cairo_int_status_t status;
+    cairo_matrix_t m, path_transform;
+    cairo_bool_t has_ctm = TRUE;
+    double scale = 1.0;
+
+    if (pdf_operators->in_text_object) {
+	status = _cairo_pdf_operators_end_text (pdf_operators);
+	if (unlikely (status))
+	    return status;
+    }
+
+    /* Optimize away the stroke ctm when it does not affect the
+     * stroke. There are other ctm cases that could be optimized
+     * however this is the most common.
+     */
+    if (fabs(ctm->xx) == 1.0 && fabs(ctm->yy) == 1.0 &&
+	fabs(ctm->xy) == 0.0 && fabs(ctm->yx) == 0.0)
+    {
+	has_ctm = FALSE;
+    }
+
+    /* The PDF CTM is transformed to the user space CTM when stroking
+     * so the corect pen shape will be used. This also requires that
+     * the path be transformed to user space when emitted. The
+     * conversion of path coordinates to user space may cause rounding
+     * errors. For example the device space point (1.234, 3.142) when
+     * transformed to a user space CTM of [100 0 0 100 0 0] will be
+     * emitted as (0.012, 0.031).
+     *
+     * To avoid the rounding problem we scale the user space CTM
+     * matrix so that all the non translation components of the matrix
+     * are <= 1. The line width and and dashes are scaled by the
+     * inverse of the scale applied to the CTM. This maintains the
+     * shape of the stroke pen while keeping the user space CTM within
+     * the range that maximizes the precision of the emitted path.
+     */
+    if (has_ctm) {
+	m = *ctm;
+	/* Zero out the translation since it does not affect the pen
+	 * shape however it may cause unnecessary digits to be emitted.
+	 */
+	m.x0 = 0.0;
+	m.y0 = 0.0;
+	_cairo_matrix_factor_out_scale (&m, &scale);
+	path_transform = m;
+	status = cairo_matrix_invert (&path_transform);
+	if (unlikely (status))
+	    return status;
+
+	cairo_matrix_multiply (&m, &m, &pdf_operators->cairo_to_pdf);
+    }
+
+    status = _cairo_pdf_operators_emit_stroke_style (pdf_operators, style, scale);
+    if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+	return CAIRO_STATUS_SUCCESS;
+    if (unlikely (status))
+	return status;
+
+    if (has_ctm) {
+	_cairo_output_stream_printf (pdf_operators->stream, "q ");
+	_cairo_output_stream_print_matrix (pdf_operators->stream, &m);
+	_cairo_output_stream_printf (pdf_operators->stream, " cm\n");
+    } else {
+	path_transform = pdf_operators->cairo_to_pdf;
+    }
+
+    status = _cairo_pdf_operators_emit_path (pdf_operators,
+					     path,
+					     &path_transform,
+					     style->line_cap);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (pdf_operators->stream, "%s", pdf_operator);
+    if (has_ctm)
+	_cairo_output_stream_printf (pdf_operators->stream, " Q");
+
+    _cairo_output_stream_printf (pdf_operators->stream, "\n");
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_stroke (cairo_pdf_operators_t		*pdf_operators,
+			     const cairo_path_fixed_t		*path,
+			     const cairo_stroke_style_t		*style,
+			     const cairo_matrix_t		*ctm,
+			     const cairo_matrix_t		*ctm_inverse)
+{
+    return _cairo_pdf_operators_emit_stroke (pdf_operators,
+					     path,
+					     style,
+					     ctm,
+					     ctm_inverse,
+					     "S");
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_fill (cairo_pdf_operators_t	*pdf_operators,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		fill_rule)
+{
+    const char *pdf_operator;
+    cairo_status_t status;
+
+    if (pdf_operators->in_text_object) {
+	status = _cairo_pdf_operators_end_text (pdf_operators);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = _cairo_pdf_operators_emit_path (pdf_operators,
+					     path,
+					     &pdf_operators->cairo_to_pdf,
+					     CAIRO_LINE_CAP_ROUND);
+    if (unlikely (status))
+	return status;
+
+    switch (fill_rule) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FILL_RULE_WINDING:
+	pdf_operator = "f";
+	break;
+    case CAIRO_FILL_RULE_EVEN_ODD:
+	pdf_operator = "f*";
+	break;
+    }
+
+    _cairo_output_stream_printf (pdf_operators->stream,
+				 "%s\n",
+				 pdf_operator);
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_fill_stroke (cairo_pdf_operators_t		*pdf_operators,
+				  const cairo_path_fixed_t	*path,
+				  cairo_fill_rule_t		 fill_rule,
+				  const cairo_stroke_style_t	*style,
+				  const cairo_matrix_t		*ctm,
+				  const cairo_matrix_t		*ctm_inverse)
+{
+    const char *operator;
+
+    switch (fill_rule) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FILL_RULE_WINDING:
+	operator = "B";
+	break;
+    case CAIRO_FILL_RULE_EVEN_ODD:
+	operator = "B*";
+	break;
+    }
+
+    return _cairo_pdf_operators_emit_stroke (pdf_operators,
+					     path,
+					     style,
+					     ctm,
+					     ctm_inverse,
+					     operator);
+}
+
+static void
+_cairo_pdf_operators_emit_glyph_index (cairo_pdf_operators_t *pdf_operators,
+				       cairo_output_stream_t *stream,
+				       unsigned int 	      glyph)
+{
+    if (pdf_operators->is_latin) {
+	if (glyph == '(' || glyph == ')' || glyph == '\\')
+	    _cairo_output_stream_printf (stream, "\\%c", glyph);
+	else if (glyph >= 0x20 && glyph <= 0x7e)
+	    _cairo_output_stream_printf (stream, "%c", glyph);
+	else
+	    _cairo_output_stream_printf (stream, "\\%03o", glyph);
+    } else {
+	_cairo_output_stream_printf (stream,
+				     "%0*x",
+				     pdf_operators->hex_width,
+				     glyph);
+    }
+}
+
+#define GLYPH_POSITION_TOLERANCE 0.001
+
+/* Emit the string of glyphs using the 'Tj' operator. This requires
+ * that the glyphs are positioned at their natural glyph advances. */
+static cairo_status_t
+_cairo_pdf_operators_emit_glyph_string (cairo_pdf_operators_t   *pdf_operators,
+					cairo_output_stream_t  	*stream)
+{
+    int i;
+
+    _cairo_output_stream_printf (stream, "%s", pdf_operators->is_latin ? "(" : "<");
+    for (i = 0; i < pdf_operators->num_glyphs; i++) {
+	_cairo_pdf_operators_emit_glyph_index (pdf_operators,
+					       stream,
+					       pdf_operators->glyphs[i].glyph_index);
+	pdf_operators->cur_x += pdf_operators->glyphs[i].x_advance;
+    }
+    _cairo_output_stream_printf (stream, "%sTj\n", pdf_operators->is_latin ? ")" : ">");
+
+    return _cairo_output_stream_get_status (stream);
+}
+
+/* Emit the string of glyphs using the 'TJ' operator.
+ *
+ * The TJ operator takes an array of strings of glyphs. Each string of
+ * glyphs is displayed using the glyph advances of each glyph to
+ * position the glyphs. A relative adjustment to the glyph advance may
+ * be specified by including the adjustment between two strings. The
+ * adjustment is in units of text space * -1000.
+ */
+static cairo_status_t
+_cairo_pdf_operators_emit_glyph_string_with_positioning (
+    cairo_pdf_operators_t   *pdf_operators,
+    cairo_output_stream_t   *stream)
+{
+    int i;
+
+    _cairo_output_stream_printf (stream, "[%s", pdf_operators->is_latin ? "(" : "<");
+    for (i = 0; i < pdf_operators->num_glyphs; i++) {
+	if (pdf_operators->glyphs[i].x_position != pdf_operators->cur_x)
+	{
+	    double delta = pdf_operators->glyphs[i].x_position - pdf_operators->cur_x;
+	    int rounded_delta;
+
+	    delta = -1000.0*delta;
+	    /* As the delta is in 1/1000 of a unit of text space,
+	     * rounding to an integer should still provide sufficient
+	     * precision. We round the delta before adding to Tm_x so
+	     * that we keep track of the accumulated rounding error in
+	     * the PDF interpreter and compensate for it when
+	     * calculating subsequent deltas.
+	     */
+	    rounded_delta = _cairo_lround (delta);
+	    if (abs(rounded_delta) < 3)
+		rounded_delta = 0;
+	    if (rounded_delta != 0) {
+		if (pdf_operators->is_latin) {
+		    _cairo_output_stream_printf (stream,
+						 ")%d(",
+						 rounded_delta);
+		} else {
+		    _cairo_output_stream_printf (stream,
+						 ">%d<",
+						 rounded_delta);
+		}
+	    }
+
+	    /* Convert the rounded delta back to text
+	     * space before adding to the current text
+	     * position. */
+	    delta = rounded_delta/-1000.0;
+	    pdf_operators->cur_x += delta;
+	}
+
+	_cairo_pdf_operators_emit_glyph_index (pdf_operators,
+					       stream,
+					       pdf_operators->glyphs[i].glyph_index);
+	pdf_operators->cur_x += pdf_operators->glyphs[i].x_advance;
+    }
+    _cairo_output_stream_printf (stream, "%s]TJ\n", pdf_operators->is_latin ? ")" : ">");
+
+    return _cairo_output_stream_get_status (stream);
+}
+
+static cairo_status_t
+_cairo_pdf_operators_flush_glyphs (cairo_pdf_operators_t    *pdf_operators)
+{
+    cairo_output_stream_t *word_wrap_stream;
+    cairo_status_t status, status2;
+    int i;
+    double x;
+
+    if (pdf_operators->num_glyphs == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    word_wrap_stream = _word_wrap_stream_create (pdf_operators->stream, pdf_operators->ps_output, 72);
+    status = _cairo_output_stream_get_status (word_wrap_stream);
+    if (unlikely (status))
+	return _cairo_output_stream_destroy (word_wrap_stream);
+
+    /* Check if glyph advance used to position every glyph */
+    x = pdf_operators->cur_x;
+    for (i = 0; i < pdf_operators->num_glyphs; i++) {
+	if (fabs(pdf_operators->glyphs[i].x_position - x) > GLYPH_POSITION_TOLERANCE)
+	    break;
+	x += pdf_operators->glyphs[i].x_advance;
+    }
+    if (i == pdf_operators->num_glyphs) {
+	status = _cairo_pdf_operators_emit_glyph_string (pdf_operators,
+							 word_wrap_stream);
+    } else {
+	status = _cairo_pdf_operators_emit_glyph_string_with_positioning (
+	    pdf_operators, word_wrap_stream);
+    }
+
+    pdf_operators->num_glyphs = 0;
+    pdf_operators->glyph_buf_x_pos = pdf_operators->cur_x;
+    status2 = _cairo_output_stream_destroy (word_wrap_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_pdf_operators_add_glyph (cairo_pdf_operators_t             *pdf_operators,
+				cairo_scaled_font_subsets_glyph_t *glyph,
+				double 			           x_position)
+{
+    double x, y;
+
+    x = glyph->x_advance;
+    y = glyph->y_advance;
+    if (glyph->is_scaled)
+	cairo_matrix_transform_distance (&pdf_operators->font_matrix_inverse, &x, &y);
+
+    pdf_operators->glyphs[pdf_operators->num_glyphs].x_position = x_position;
+    pdf_operators->glyphs[pdf_operators->num_glyphs].glyph_index = glyph->subset_glyph_index;
+    pdf_operators->glyphs[pdf_operators->num_glyphs].x_advance = x;
+    pdf_operators->glyph_buf_x_pos += x;
+    pdf_operators->num_glyphs++;
+    if (pdf_operators->num_glyphs == PDF_GLYPH_BUFFER_SIZE)
+	return _cairo_pdf_operators_flush_glyphs (pdf_operators);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Use 'Tm' operator to set the PDF text matrix. */
+static cairo_status_t
+_cairo_pdf_operators_set_text_matrix (cairo_pdf_operators_t  *pdf_operators,
+				      cairo_matrix_t         *matrix)
+{
+    cairo_matrix_t inverse;
+    cairo_status_t status;
+
+    /* We require the matrix to be invertable. */
+    inverse = *matrix;
+    status = cairo_matrix_invert (&inverse);
+    if (unlikely (status))
+	return status;
+
+    pdf_operators->text_matrix = *matrix;
+    pdf_operators->cur_x = 0;
+    pdf_operators->cur_y = 0;
+    pdf_operators->glyph_buf_x_pos = 0;
+    _cairo_output_stream_print_matrix (pdf_operators->stream, &pdf_operators->text_matrix);
+    _cairo_output_stream_printf (pdf_operators->stream, " Tm\n");
+
+    pdf_operators->cairo_to_pdftext = *matrix;
+    status = cairo_matrix_invert (&pdf_operators->cairo_to_pdftext);
+    assert (status == CAIRO_STATUS_SUCCESS);
+    cairo_matrix_multiply (&pdf_operators->cairo_to_pdftext,
+			   &pdf_operators->cairo_to_pdf,
+			   &pdf_operators->cairo_to_pdftext);
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+#define TEXT_MATRIX_TOLERANCE 1e-6
+
+/* Set the translation components of the PDF text matrix to x, y. The
+ * 'Td' operator is used to transform the text matrix.
+ */
+static cairo_status_t
+_cairo_pdf_operators_set_text_position (cairo_pdf_operators_t  *pdf_operators,
+					double 			x,
+					double 			y)
+{
+    cairo_matrix_t translate, inverse;
+    cairo_status_t status;
+
+    /* The Td operator transforms the text_matrix with:
+     *
+     *   text_matrix' = T x text_matrix
+     *
+     * where T is a translation matrix with the translation components
+     * set to the Td operands tx and ty.
+     */
+    inverse = pdf_operators->text_matrix;
+    status = cairo_matrix_invert (&inverse);
+    assert (status == CAIRO_STATUS_SUCCESS);
+    pdf_operators->text_matrix.x0 = x;
+    pdf_operators->text_matrix.y0 = y;
+    cairo_matrix_multiply (&translate, &pdf_operators->text_matrix, &inverse);
+    if (fabs(translate.x0) < TEXT_MATRIX_TOLERANCE)
+	translate.x0 = 0.0;
+    if (fabs(translate.y0) < TEXT_MATRIX_TOLERANCE)
+	translate.y0 = 0.0;
+    _cairo_output_stream_printf (pdf_operators->stream,
+				 "%f %f Td\n",
+				 translate.x0,
+				 translate.y0);
+    pdf_operators->cur_x = 0;
+    pdf_operators->cur_y = 0;
+    pdf_operators->glyph_buf_x_pos = 0;
+
+    pdf_operators->cairo_to_pdftext = pdf_operators->text_matrix;
+    status = cairo_matrix_invert (&pdf_operators->cairo_to_pdftext);
+    assert (status == CAIRO_STATUS_SUCCESS);
+    cairo_matrix_multiply (&pdf_operators->cairo_to_pdftext,
+			   &pdf_operators->cairo_to_pdf,
+			   &pdf_operators->cairo_to_pdftext);
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+/* Select the font using the 'Tf' operator. The font size is set to 1
+ * as we use the 'Tm' operator to set the font scale.
+ */
+static cairo_status_t
+_cairo_pdf_operators_set_font_subset (cairo_pdf_operators_t             *pdf_operators,
+				      cairo_scaled_font_subsets_glyph_t *subset_glyph)
+{
+    cairo_status_t status;
+
+    _cairo_output_stream_printf (pdf_operators->stream,
+				 "/f-%d-%d 1 Tf\n",
+				 subset_glyph->font_id,
+				 subset_glyph->subset_id);
+    if (pdf_operators->use_font_subset) {
+	status = pdf_operators->use_font_subset (subset_glyph->font_id,
+						 subset_glyph->subset_id,
+						 pdf_operators->use_font_subset_closure);
+	if (unlikely (status))
+	    return status;
+    }
+    pdf_operators->font_id = subset_glyph->font_id;
+    pdf_operators->subset_id = subset_glyph->subset_id;
+    pdf_operators->is_latin = subset_glyph->is_latin;
+
+    if (subset_glyph->is_composite)
+	pdf_operators->hex_width = 4;
+    else
+	pdf_operators->hex_width = 2;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_pdf_operators_begin_text (cairo_pdf_operators_t    *pdf_operators)
+{
+    _cairo_output_stream_printf (pdf_operators->stream, "BT\n");
+
+    pdf_operators->in_text_object = TRUE;
+    pdf_operators->num_glyphs = 0;
+    pdf_operators->glyph_buf_x_pos = 0;
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+static cairo_status_t
+_cairo_pdf_operators_end_text (cairo_pdf_operators_t    *pdf_operators)
+{
+    cairo_status_t status;
+
+    status = _cairo_pdf_operators_flush_glyphs (pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (pdf_operators->stream, "ET\n");
+
+    pdf_operators->in_text_object = FALSE;
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+/* Compare the scale components of two matrices. The translation
+ * components are ignored. */
+static cairo_bool_t
+_cairo_matrix_scale_equal (cairo_matrix_t *a, cairo_matrix_t *b)
+{
+    return (a->xx == b->xx &&
+	    a->xy == b->xy &&
+	    a->yx == b->yx &&
+	    a->yy == b->yy);
+}
+
+static cairo_status_t
+_cairo_pdf_operators_begin_actualtext (cairo_pdf_operators_t *pdf_operators,
+				       const char 	     *utf8,
+				       int		      utf8_len)
+{
+    uint16_t *utf16;
+    int utf16_len;
+    cairo_status_t status;
+    int i;
+
+    _cairo_output_stream_printf (pdf_operators->stream, "/Span << /ActualText <feff");
+    if (utf8_len) {
+	status = _cairo_utf8_to_utf16 (utf8, utf8_len, &utf16, &utf16_len);
+	if (unlikely (status))
+	    return status;
+
+	for (i = 0; i < utf16_len; i++) {
+	    _cairo_output_stream_printf (pdf_operators->stream,
+					 "%04x", (int) (utf16[i]));
+	}
+	free (utf16);
+    }
+    _cairo_output_stream_printf (pdf_operators->stream, "> >> BDC\n");
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+static cairo_status_t
+_cairo_pdf_operators_end_actualtext (cairo_pdf_operators_t    *pdf_operators)
+{
+    _cairo_output_stream_printf (pdf_operators->stream, "EMC\n");
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+static cairo_status_t
+_cairo_pdf_operators_emit_glyph (cairo_pdf_operators_t             *pdf_operators,
+				 cairo_glyph_t              	   *glyph,
+				 cairo_scaled_font_subsets_glyph_t *subset_glyph)
+{
+    double x, y;
+    cairo_status_t status;
+
+    if (pdf_operators->is_new_text_object ||
+	pdf_operators->font_id != subset_glyph->font_id ||
+	pdf_operators->subset_id != subset_glyph->subset_id)
+    {
+	status = _cairo_pdf_operators_flush_glyphs (pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_operators_set_font_subset (pdf_operators, subset_glyph);
+	if (unlikely (status))
+	    return status;
+
+	pdf_operators->is_new_text_object = FALSE;
+    }
+
+    x = glyph->x;
+    y = glyph->y;
+    cairo_matrix_transform_point (&pdf_operators->cairo_to_pdftext, &x, &y);
+
+    /* The TJ operator for displaying text strings can only set
+     * the horizontal position of the glyphs. If the y position
+     * (in text space) changes, use the Td operator to change the
+     * current position to the next glyph. We also use the Td
+     * operator to move the current position if the horizontal
+     * position changes by more than 10 (in text space
+     * units). This is becauses the horizontal glyph positioning
+     * in the TJ operator is intended for kerning and there may be
+     * PDF consumers that do not handle very large position
+     * adjustments in TJ.
+     */
+    if (fabs(x - pdf_operators->glyph_buf_x_pos) > 10 ||
+	fabs(y - pdf_operators->cur_y) > GLYPH_POSITION_TOLERANCE)
+    {
+	status = _cairo_pdf_operators_flush_glyphs (pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	x = glyph->x;
+	y = glyph->y;
+	cairo_matrix_transform_point (&pdf_operators->cairo_to_pdf, &x, &y);
+	status = _cairo_pdf_operators_set_text_position (pdf_operators, x, y);
+	if (unlikely (status))
+	    return status;
+
+	x = 0.0;
+	y = 0.0;
+    }
+
+    status = _cairo_pdf_operators_add_glyph (pdf_operators,
+					     subset_glyph,
+					     x);
+    return status;
+}
+
+/* A utf8_len of -1 indicates no unicode text. A utf8_len = 0 is an
+ * empty string.
+ */
+static cairo_int_status_t
+_cairo_pdf_operators_emit_cluster (cairo_pdf_operators_t      *pdf_operators,
+				   const char                 *utf8,
+				   int                         utf8_len,
+				   cairo_glyph_t              *glyphs,
+				   int                         num_glyphs,
+				   cairo_text_cluster_flags_t  cluster_flags,
+				   cairo_scaled_font_t	      *scaled_font)
+{
+    cairo_scaled_font_subsets_glyph_t subset_glyph;
+    cairo_glyph_t *cur_glyph;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    int i;
+
+    /* If the cluster maps 1 glyph to 1 or more unicode characters, we
+     * first try _map_glyph() with the unicode string to see if it can
+     * use toUnicode to map our glyph to the unicode. This will fail
+     * if the glyph is already mapped to a different unicode string.
+     *
+     * We also go through this path if no unicode mapping was
+     * supplied (utf8_len < 0).
+     *
+     * Mapping a glyph to a zero length unicode string requires the
+     * use of ActualText.
+     */
+    if (num_glyphs == 1 && utf8_len != 0) {
+	status = _cairo_scaled_font_subsets_map_glyph (pdf_operators->font_subsets,
+						       scaled_font,
+						       glyphs->index,
+						       utf8,
+						       utf8_len,
+						       &subset_glyph);
+	if (unlikely (status))
+	    return status;
+
+	if (subset_glyph.utf8_is_mapped || utf8_len < 0) {
+	    status = _cairo_pdf_operators_emit_glyph (pdf_operators,
+						      glyphs,
+						      &subset_glyph);
+	    if (unlikely (status))
+		return status;
+
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    if (pdf_operators->use_actual_text) {
+	/* Fallback to using ActualText to map zero or more glyphs to a
+	 * unicode string. */
+	status = _cairo_pdf_operators_flush_glyphs (pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_operators_begin_actualtext (pdf_operators, utf8, utf8_len);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+	cur_glyph = glyphs + num_glyphs - 1;
+    else
+	cur_glyph = glyphs;
+
+    /* XXX
+     * If no glyphs, we should put *something* here for the text to be selectable. */
+    for (i = 0; i < num_glyphs; i++) {
+	status = _cairo_scaled_font_subsets_map_glyph (pdf_operators->font_subsets,
+						       scaled_font,
+						       cur_glyph->index,
+						       NULL, -1,
+						       &subset_glyph);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_operators_emit_glyph (pdf_operators,
+						  cur_glyph,
+						  &subset_glyph);
+	if (unlikely (status))
+	    return status;
+
+	if ((cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD))
+	    cur_glyph--;
+	else
+	    cur_glyph++;
+    }
+
+    if (pdf_operators->use_actual_text) {
+	status = _cairo_pdf_operators_flush_glyphs (pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_operators_end_actualtext (pdf_operators);
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_show_text_glyphs (cairo_pdf_operators_t	  *pdf_operators,
+				       const char                 *utf8,
+				       int                         utf8_len,
+				       cairo_glyph_t              *glyphs,
+				       int                         num_glyphs,
+				       const cairo_text_cluster_t *clusters,
+				       int                         num_clusters,
+				       cairo_text_cluster_flags_t  cluster_flags,
+				       cairo_scaled_font_t	  *scaled_font)
+{
+    cairo_status_t status;
+    int i;
+    cairo_matrix_t text_matrix, invert_y_axis;
+    double x, y;
+    const char *cur_text;
+    cairo_glyph_t *cur_glyph;
+
+    pdf_operators->font_matrix_inverse = scaled_font->font_matrix;
+    status = cairo_matrix_invert (&pdf_operators->font_matrix_inverse);
+    if (status == CAIRO_STATUS_INVALID_MATRIX)
+	return CAIRO_STATUS_SUCCESS;
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    pdf_operators->is_new_text_object = FALSE;
+    if (pdf_operators->in_text_object == FALSE) {
+	status = _cairo_pdf_operators_begin_text (pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	/* Force Tm and Tf to be emitted when starting a new text
+	 * object.*/
+	pdf_operators->is_new_text_object = TRUE;
+    }
+
+    cairo_matrix_init_scale (&invert_y_axis, 1, -1);
+    text_matrix = scaled_font->scale;
+
+    /* Invert y axis in device space  */
+    cairo_matrix_multiply (&text_matrix, &invert_y_axis, &text_matrix);
+
+    if (pdf_operators->is_new_text_object ||
+	! _cairo_matrix_scale_equal (&pdf_operators->text_matrix, &text_matrix))
+    {
+	status = _cairo_pdf_operators_flush_glyphs (pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	x = glyphs[0].x;
+	y = glyphs[0].y;
+	cairo_matrix_transform_point (&pdf_operators->cairo_to_pdf, &x, &y);
+	text_matrix.x0 = x;
+	text_matrix.y0 = y;
+	status = _cairo_pdf_operators_set_text_matrix (pdf_operators, &text_matrix);
+	if (status == CAIRO_STATUS_INVALID_MATRIX)
+	    return CAIRO_STATUS_SUCCESS;
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (num_clusters > 0) {
+	cur_text = utf8;
+	if ((cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD))
+	    cur_glyph = glyphs + num_glyphs;
+	else
+	    cur_glyph = glyphs;
+	for (i = 0; i < num_clusters; i++) {
+	    if ((cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD))
+		cur_glyph -= clusters[i].num_glyphs;
+	    status = _cairo_pdf_operators_emit_cluster (pdf_operators,
+							cur_text,
+							clusters[i].num_bytes,
+							cur_glyph,
+							clusters[i].num_glyphs,
+							cluster_flags,
+							scaled_font);
+	    if (unlikely (status))
+		return status;
+
+	    cur_text += clusters[i].num_bytes;
+	    if (!(cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD))
+		cur_glyph += clusters[i].num_glyphs;
+	}
+    } else {
+	for (i = 0; i < num_glyphs; i++) {
+	    status = _cairo_pdf_operators_emit_cluster (pdf_operators,
+							NULL,
+							-1, /* no unicode string available */
+							&glyphs[i],
+							1,
+							FALSE,
+							scaled_font);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_tag_begin (cairo_pdf_operators_t *pdf_operators,
+				const char            *tag_name,
+				int                    mcid)
+{
+    cairo_status_t status;
+
+    if (pdf_operators->in_text_object) {
+	status = _cairo_pdf_operators_end_text (pdf_operators);
+	if (unlikely (status))
+	    return status;
+    }
+
+    _cairo_output_stream_printf (pdf_operators->stream,
+				 "/%s << /MCID %d >> BDC\n",
+				 tag_name,
+				 mcid);
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+cairo_int_status_t
+_cairo_pdf_operators_tag_end (cairo_pdf_operators_t *pdf_operators)
+{
+    cairo_status_t status;
+
+    if (pdf_operators->in_text_object) {
+	status = _cairo_pdf_operators_end_text (pdf_operators);
+	if (unlikely (status))
+	    return status;
+    }
+
+    _cairo_output_stream_printf (pdf_operators->stream, "EMC\n");
+
+    return _cairo_output_stream_get_status (pdf_operators->stream);
+}
+
+#endif /* CAIRO_HAS_PDF_OPERATORS */
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-shading-private.h b/libs/cairo-1.16.0/src/cairo-pdf-shading-private.h
new file mode 100644
index 0000000..0ca8cb7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-shading-private.h
@@ -0,0 +1,100 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_PDF_SHADING_H
+#define CAIRO_PDF_SHADING_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+#include "cairo-pattern-private.h"
+
+
+typedef struct _cairo_pdf_shading {
+    int shading_type;
+    int bits_per_coordinate;
+    int bits_per_component;
+    int bits_per_flag;
+    double *decode_array;
+    int decode_array_length;
+    unsigned char *data;
+    unsigned long data_length;
+} cairo_pdf_shading_t;
+
+
+/**
+ * _cairo_pdf_shading_init_color:
+ * @shading: a #cairo_pdf_shading_t to initialize
+ * @pattern: the #cairo_mesh_pattern_t to initialize from
+ *
+ * Generate the PDF shading dictionary data for the a PDF type 7
+ * shading from RGB part of the specified mesh pattern.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful, possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_pdf_shading_init_color (cairo_pdf_shading_t        *shading,
+			       const cairo_mesh_pattern_t *pattern);
+
+
+/**
+ * _cairo_pdf_shading_init_alpha:
+ * @shading: a #cairo_pdf_shading_t to initialize
+ * @pattern: the #cairo_mesh_pattern_t to initialize from
+ *
+ * Generate the PDF shading dictionary data for a PDF type 7
+ * shading from alpha part of the specified mesh pattern.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful, possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_pdf_shading_init_alpha (cairo_pdf_shading_t        *shading,
+			       const cairo_mesh_pattern_t *pattern);
+
+/**
+ * _cairo_pdf_shading_fini:
+ * @shading: a #cairo_pdf_shading_t
+ *
+ * Free all resources associated with @shading.  After this call,
+ * @shading should not be used again without a subsequent call to
+ * _cairo_pdf_shading_init() again first.
+ **/
+cairo_private void
+_cairo_pdf_shading_fini (cairo_pdf_shading_t *shading);
+
+
+#endif /* CAIRO_PDF_SHADING_H */
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-shading.c b/libs/cairo-1.16.0/src/cairo-pdf-shading.c
new file mode 100644
index 0000000..b114b31
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-shading.c
@@ -0,0 +1,279 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_PDF_OPERATORS
+
+#include "cairo-pdf-shading-private.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+#include <float.h>
+
+static unsigned char *
+encode_coordinate (unsigned char *p, double c)
+{
+    uint32_t f;
+
+    f = c;
+    *p++ = f >> 24;
+    *p++ = (f >> 16) & 0xff;
+    *p++ = (f >> 8)  & 0xff;
+    *p++ = f & 0xff;
+
+    return p;
+}
+
+static unsigned char *
+encode_point (unsigned char *p, const cairo_point_double_t *point)
+{
+    p = encode_coordinate (p, point->x);
+    p = encode_coordinate (p, point->y);
+
+    return p;
+}
+
+static unsigned char *
+encode_color_component (unsigned char *p, double color)
+{
+    uint16_t c;
+
+    c = _cairo_color_double_to_short (color);
+    *p++ = c >> 8;
+    *p++ = c & 0xff;
+
+    return p;
+}
+
+static unsigned char *
+encode_color (unsigned char *p, const cairo_color_t *color)
+{
+    p = encode_color_component (p, color->red);
+    p = encode_color_component (p, color->green);
+    p = encode_color_component (p, color->blue);
+
+    return p;
+}
+
+static unsigned char *
+encode_alpha (unsigned char *p, const cairo_color_t *color)
+{
+    p = encode_color_component (p, color->alpha);
+
+    return p;
+}
+
+static cairo_status_t
+_cairo_pdf_shading_generate_decode_array (cairo_pdf_shading_t        *shading,
+					  const cairo_mesh_pattern_t *mesh,
+					  cairo_bool_t                is_alpha)
+{
+    unsigned int num_color_components, i;
+    cairo_bool_t is_valid;
+
+    if (is_alpha)
+	num_color_components = 1;
+    else
+	num_color_components = 3;
+
+    shading->decode_array_length = 4 + num_color_components * 2;
+    shading->decode_array = _cairo_malloc_ab (shading->decode_array_length,
+					      sizeof (double));
+    if (unlikely (shading->decode_array == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    is_valid = _cairo_mesh_pattern_coord_box (mesh,
+					      &shading->decode_array[0],
+					      &shading->decode_array[2],
+					      &shading->decode_array[1],
+					      &shading->decode_array[3]);
+
+    assert (is_valid);
+    assert (shading->decode_array[1] - shading->decode_array[0] >= DBL_EPSILON);
+    assert (shading->decode_array[3] - shading->decode_array[2] >= DBL_EPSILON);
+
+    for (i = 0; i < num_color_components; i++) {
+	shading->decode_array[4 + 2*i] = 0;
+	shading->decode_array[5 + 2*i] = 1;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* The ISO32000 specification mandates this order for the points which
+ * define the patch. */
+static const int pdf_points_order_i[16] = {
+    0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 2, 1, 1, 1, 2, 2 };
+static const int pdf_points_order_j[16] = {
+    0, 1, 2, 3, 3, 3, 3, 2, 1, 0, 0, 0, 1, 2, 2, 1 };
+
+static cairo_status_t
+_cairo_pdf_shading_generate_data (cairo_pdf_shading_t        *shading,
+				  const cairo_mesh_pattern_t *mesh,
+				  cairo_bool_t                is_alpha)
+{
+    const cairo_mesh_patch_t *patch;
+    double x_off, y_off, x_scale, y_scale;
+    unsigned int num_patches;
+    unsigned int num_color_components;
+    unsigned char *p;
+    unsigned int i, j;
+
+    if (is_alpha)
+	num_color_components = 1;
+    else
+	num_color_components = 3;
+
+    num_patches = _cairo_array_num_elements (&mesh->patches);
+    patch = _cairo_array_index_const (&mesh->patches, 0);
+
+    /* Each patch requires:
+     *
+     * 1 flag - 1 byte
+     * 16 points. Each point is 2 coordinates. Each coordinate is
+     * stored in 4 bytes.
+     *
+     * 4 colors. Each color is stored in 2 bytes * num_color_components.
+     */
+    shading->data_length = num_patches * (1 + 16 * 2 * 4 + 4 * 2 * num_color_components);
+    shading->data = _cairo_malloc (shading->data_length);
+    if (unlikely (shading->data == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    x_off = shading->decode_array[0];
+    y_off = shading->decode_array[2];
+    x_scale = UINT32_MAX / (shading->decode_array[1] - x_off);
+    y_scale = UINT32_MAX / (shading->decode_array[3] - y_off);
+
+    p = shading->data;
+    for (i = 0; i < num_patches; i++) {
+	/* edge flag */
+	*p++ = 0;
+
+	/* 16 points */
+	for (j = 0; j < 16; j++) {
+	    cairo_point_double_t point;
+	    int pi, pj;
+
+	    pi = pdf_points_order_i[j];
+	    pj = pdf_points_order_j[j];
+	    point = patch[i].points[pi][pj];
+
+	    /* Transform the point as specified in the decode array */
+	    point.x -= x_off;
+	    point.y -= y_off;
+	    point.x *= x_scale;
+	    point.y *= y_scale;
+
+	    /* Make sure that rounding errors don't cause
+	     * wraparounds */
+	    point.x = _cairo_restrict_value (point.x, 0, UINT32_MAX);
+	    point.y = _cairo_restrict_value (point.y, 0, UINT32_MAX);
+
+	    p = encode_point (p, &point);
+	}
+
+	/* 4 colors */
+	for (j = 0; j < 4; j++) {
+	    if (is_alpha)
+		p = encode_alpha (p, &patch[i].colors[j]);
+	    else
+		p = encode_color (p, &patch[i].colors[j]);
+	}
+    }
+
+    assert (p == shading->data + shading->data_length);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_pdf_shading_init (cairo_pdf_shading_t        *shading,
+			 const cairo_mesh_pattern_t *mesh,
+			 cairo_bool_t                is_alpha)
+{
+    cairo_status_t status;
+
+    assert (mesh->base.status == CAIRO_STATUS_SUCCESS);
+    assert (mesh->current_patch == NULL);
+
+    shading->shading_type = 7;
+
+    /*
+     * Coordinates from the minimum to the maximum value of the mesh
+     * map to the [0..UINT32_MAX] range and are represented as
+     * uint32_t values.
+     *
+     * Color components are represented as uint16_t (in a 0.16 fixed
+     * point format, as in the rest of cairo).
+     */
+    shading->bits_per_coordinate = 32;
+    shading->bits_per_component = 16;
+    shading->bits_per_flag = 8;
+
+    shading->decode_array = NULL;
+    shading->data = NULL;
+
+    status = _cairo_pdf_shading_generate_decode_array (shading, mesh, is_alpha);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_pdf_shading_generate_data (shading, mesh, is_alpha);
+}
+
+cairo_status_t
+_cairo_pdf_shading_init_color (cairo_pdf_shading_t        *shading,
+			       const cairo_mesh_pattern_t *pattern)
+{
+    return _cairo_pdf_shading_init (shading, pattern, FALSE);
+}
+
+cairo_status_t
+_cairo_pdf_shading_init_alpha (cairo_pdf_shading_t        *shading,
+			       const cairo_mesh_pattern_t *pattern)
+{
+    return _cairo_pdf_shading_init (shading, pattern, TRUE);
+}
+
+void
+_cairo_pdf_shading_fini (cairo_pdf_shading_t *shading)
+{
+    free (shading->data);
+    free (shading->decode_array);
+}
+
+#endif /* CAIRO_HAS_PDF_OPERATORS */
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-surface-private.h b/libs/cairo-1.16.0/src/cairo-pdf-surface-private.h
new file mode 100644
index 0000000..3793332
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-surface-private.h
@@ -0,0 +1,399 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ * Copyright © 2006 Red Hat, Inc
+ * Copyright © 2007, 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_PDF_SURFACE_PRIVATE_H
+#define CAIRO_PDF_SURFACE_PRIVATE_H
+
+#include "cairo-pdf.h"
+
+#include "cairo-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-pdf-operators-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-tag-attributes-private.h"
+#include "cairo-tag-stack-private.h"
+
+typedef struct _cairo_pdf_resource {
+    unsigned int id;
+} cairo_pdf_resource_t;
+
+#define CAIRO_NUM_OPERATORS (CAIRO_OPERATOR_HSL_LUMINOSITY + 1)
+
+typedef struct _cairo_pdf_group_resources {
+    cairo_bool_t  operators[CAIRO_NUM_OPERATORS];
+    cairo_array_t alphas;
+    cairo_array_t smasks;
+    cairo_array_t patterns;
+    cairo_array_t shadings;
+    cairo_array_t xobjects;
+    cairo_array_t fonts;
+} cairo_pdf_group_resources_t;
+
+typedef struct _cairo_pdf_source_surface_entry {
+    cairo_hash_entry_t base;
+    unsigned int id;
+    unsigned char *unique_id;
+    unsigned long unique_id_length;
+    cairo_operator_t operator;
+    cairo_bool_t interpolate;
+    cairo_bool_t stencil_mask;
+    cairo_bool_t smask;
+    cairo_bool_t need_transp_group;
+    cairo_pdf_resource_t surface_res;
+    cairo_pdf_resource_t smask_res;
+
+    /* True if surface will be emitted as an Image XObject. */
+    cairo_bool_t emit_image;
+
+    /* Extents of the source surface. */
+    cairo_bool_t bounded;
+    cairo_rectangle_int_t extents;
+
+    /* Union of source extents required for all operations using this source */
+    cairo_rectangle_int_t required_extents;
+} cairo_pdf_source_surface_entry_t;
+
+typedef struct _cairo_pdf_source_surface {
+    cairo_pattern_type_t type;
+    cairo_surface_t *surface;
+    cairo_pattern_t *raster_pattern;
+    cairo_pdf_source_surface_entry_t *hash_entry;
+} cairo_pdf_source_surface_t;
+
+typedef struct _cairo_pdf_pattern {
+    double width;
+    double height;
+    cairo_rectangle_int_t extents;
+    cairo_pattern_t *pattern;
+    cairo_pdf_resource_t pattern_res;
+    cairo_pdf_resource_t gstate_res;
+    cairo_operator_t operator;
+    cairo_bool_t is_shading;
+
+    /* PDF pattern space is the pattern matrix concatenated with the
+     * initial space of the parent object. If the parent object is the
+     * page, the initial space does not include the Y-axis flipping
+     * matrix emitted at the start of the page content stream.  If the
+     * parent object is not the page content stream, the initial space
+     * will have a flipped Y-axis. The inverted_y_axis flag is true
+     * when the initial space of the parent object that is drawing
+     * this pattern has a flipped Y-axis.
+     */
+    cairo_bool_t inverted_y_axis;
+} cairo_pdf_pattern_t;
+
+typedef enum _cairo_pdf_operation {
+    PDF_PAINT,
+    PDF_MASK,
+    PDF_FILL,
+    PDF_STROKE,
+    PDF_SHOW_GLYPHS
+} cairo_pdf_operation_t;
+
+typedef struct _cairo_pdf_smask_group {
+    double		  width;
+    double		  height;
+    cairo_rectangle_int_t extents;
+    cairo_pdf_resource_t  group_res;
+    cairo_pdf_operation_t operation;
+    cairo_pattern_t	 *source;
+    cairo_pdf_resource_t  source_res;
+    cairo_pattern_t	 *mask;
+    cairo_path_fixed_t	  path;
+    cairo_fill_rule_t	  fill_rule;
+    cairo_stroke_style_t  style;
+    cairo_matrix_t	  ctm;
+    cairo_matrix_t	  ctm_inverse;
+    char		 *utf8;
+    int                   utf8_len;
+    cairo_glyph_t	 *glyphs;
+    int			  num_glyphs;
+    cairo_text_cluster_t *clusters;
+    int                   num_clusters;
+    cairo_bool_t          cluster_flags;
+    cairo_scaled_font_t	 *scaled_font;
+} cairo_pdf_smask_group_t;
+
+typedef struct _cairo_pdf_jbig2_global {
+    unsigned char *id;
+    unsigned long id_length;
+    cairo_pdf_resource_t  res;
+    cairo_bool_t emitted;
+} cairo_pdf_jbig2_global_t;
+
+/* cairo-pdf-interchange.c types */
+
+struct page_mcid {
+    int page;
+    int mcid;
+};
+
+struct tag_extents {
+    cairo_rectangle_int_t extents;
+    cairo_bool_t valid;
+    cairo_list_t link;
+};
+
+typedef struct _cairo_pdf_struct_tree_node {
+    char *name;
+    cairo_pdf_resource_t res;
+    struct _cairo_pdf_struct_tree_node *parent;
+    cairo_list_t children;
+    cairo_array_t mcid; /* array of struct page_mcid */
+    cairo_pdf_resource_t annot_res; /* 0 if no annot */
+    struct tag_extents extents;
+    cairo_list_t link;
+} cairo_pdf_struct_tree_node_t;
+
+typedef struct _cairo_pdf_annotation {
+    cairo_pdf_struct_tree_node_t *node; /* node containing the annotation */
+    cairo_link_attrs_t link_attrs;
+} cairo_pdf_annotation_t;
+
+typedef struct _cairo_pdf_named_dest {
+    cairo_hash_entry_t base;
+    struct tag_extents extents;
+    cairo_dest_attrs_t attrs;
+    int page;
+} cairo_pdf_named_dest_t;
+
+typedef struct _cairo_pdf_outline_entry {
+    char *name;
+    cairo_link_attrs_t link_attrs;
+    cairo_pdf_outline_flags_t flags;
+    cairo_pdf_resource_t res;
+    struct _cairo_pdf_outline_entry *parent;
+    struct _cairo_pdf_outline_entry *first_child;
+    struct _cairo_pdf_outline_entry *last_child;
+    struct _cairo_pdf_outline_entry *next;
+    struct _cairo_pdf_outline_entry *prev;
+    int count;
+} cairo_pdf_outline_entry_t;
+
+struct docinfo {
+    char *title;
+    char *author;
+    char *subject;
+    char *keywords;
+    char *creator;
+    char *create_date;
+    char *mod_date;
+};
+
+typedef struct _cairo_pdf_interchange {
+    cairo_tag_stack_t analysis_tag_stack;
+    cairo_tag_stack_t render_tag_stack;
+    cairo_array_t push_data; /* records analysis_tag_stack data field for each push */
+    int push_data_index;
+    cairo_pdf_struct_tree_node_t *struct_root;
+    cairo_pdf_struct_tree_node_t *current_node;
+    cairo_pdf_struct_tree_node_t *begin_page_node;
+    cairo_pdf_struct_tree_node_t *end_page_node;
+    cairo_array_t parent_tree; /* parent tree resources */
+    cairo_array_t mcid_to_tree; /* mcid to tree node mapping for current page */
+    cairo_array_t annots; /* array of pointers to cairo_pdf_annotation_t */
+    cairo_pdf_resource_t parent_tree_res;
+    cairo_list_t extents_list;
+    cairo_hash_table_t *named_dests;
+    int num_dests;
+    cairo_pdf_named_dest_t **sorted_dests;
+    cairo_pdf_resource_t dests_res;
+    int annot_page;
+    cairo_array_t outline; /* array of pointers to cairo_pdf_outline_entry_t; */
+    struct docinfo docinfo;
+
+} cairo_pdf_interchange_t;
+
+/* pdf surface data */
+
+typedef struct _cairo_pdf_surface cairo_pdf_surface_t;
+
+struct _cairo_pdf_surface {
+    cairo_surface_t base;
+
+    /* Prefer the name "output" here to avoid confusion over the
+     * structure within a PDF document known as a "stream". */
+    cairo_output_stream_t *output;
+
+    double width;
+    double height;
+    cairo_rectangle_int_t surface_extents;
+    cairo_bool_t surface_bounded;
+    cairo_matrix_t cairo_to_pdf;
+    cairo_bool_t in_xobject;
+
+    cairo_array_t objects;
+    cairo_array_t pages;
+    cairo_array_t rgb_linear_functions;
+    cairo_array_t alpha_linear_functions;
+    cairo_array_t page_patterns;
+    cairo_array_t page_surfaces;
+    cairo_array_t doc_surfaces;
+    cairo_hash_table_t *all_surfaces;
+    cairo_array_t smask_groups;
+    cairo_array_t knockout_group;
+    cairo_array_t jbig2_global;
+    cairo_array_t page_heights;
+
+    cairo_scaled_font_subsets_t *font_subsets;
+    cairo_array_t fonts;
+
+    cairo_pdf_resource_t next_available_resource;
+    cairo_pdf_resource_t pages_resource;
+    cairo_pdf_resource_t struct_tree_root;
+
+    cairo_pdf_version_t pdf_version;
+    cairo_bool_t compress_content;
+
+    cairo_pdf_resource_t content;
+    cairo_pdf_resource_t content_resources;
+    cairo_pdf_group_resources_t resources;
+    cairo_bool_t has_fallback_images;
+    cairo_bool_t header_emitted;
+
+    struct {
+	cairo_bool_t active;
+	cairo_pdf_resource_t self;
+	cairo_pdf_resource_t length;
+	long start_offset;
+	cairo_bool_t compressed;
+	cairo_output_stream_t *old_output;
+    } pdf_stream;
+
+    struct {
+	cairo_bool_t active;
+	cairo_output_stream_t *stream;
+	cairo_output_stream_t *mem_stream;
+	cairo_output_stream_t *old_output;
+	cairo_pdf_resource_t   resource;
+	cairo_box_double_t     bbox;
+	cairo_bool_t is_knockout;
+    } group_stream;
+
+    cairo_surface_clipper_t clipper;
+
+    cairo_pdf_operators_t pdf_operators;
+    cairo_paginated_mode_t paginated_mode;
+    cairo_bool_t select_pattern_gstate_saved;
+
+    cairo_bool_t force_fallbacks;
+
+    cairo_operator_t current_operator;
+    cairo_bool_t current_pattern_is_solid_color;
+    cairo_bool_t current_color_is_stroke;
+    double current_color_red;
+    double current_color_green;
+    double current_color_blue;
+    double current_color_alpha;
+
+    cairo_pdf_interchange_t interchange;
+    int page_parent_tree; /* -1 if not used */
+    cairo_array_t page_annots;
+    cairo_bool_t tagged;
+    char *current_page_label;
+    cairo_array_t page_labels;
+    cairo_pdf_resource_t outlines_dict_res;
+    cairo_pdf_resource_t names_dict_res;
+    cairo_pdf_resource_t docinfo_res;
+    cairo_pdf_resource_t page_labels_res;
+
+    int thumbnail_width;
+    int thumbnail_height;
+    cairo_image_surface_t *thumbnail_image;
+
+    cairo_surface_t *paginated_surface;
+};
+
+cairo_private cairo_pdf_resource_t
+_cairo_pdf_surface_new_object (cairo_pdf_surface_t *surface);
+
+cairo_private void
+_cairo_pdf_surface_update_object (cairo_pdf_surface_t	*surface,
+				  cairo_pdf_resource_t	 resource);
+
+cairo_private cairo_int_status_t
+_cairo_utf8_to_pdf_string (const char *utf8, char **str_out);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_init (cairo_pdf_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_fini (cairo_pdf_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_begin_page_content (cairo_pdf_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_end_page_content (cairo_pdf_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_tag_begin (cairo_pdf_surface_t    *surface,
+				  const char             *name,
+				  const char             *attributes);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_tag_end (cairo_pdf_surface_t *surface,
+				const char          *name);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_add_operation_extents (cairo_pdf_surface_t         *surface,
+					      const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_write_page_objects (cairo_pdf_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_write_document_objects (cairo_pdf_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_add_outline (cairo_pdf_surface_t        *surface,
+				    int                         parent_id,
+				    const char                 *name,
+				    const char                 *dest,
+				    cairo_pdf_outline_flags_t   flags,
+				    int                        *id);
+
+cairo_private cairo_int_status_t
+_cairo_pdf_interchange_set_metadata (cairo_pdf_surface_t  *surface,
+				     cairo_pdf_metadata_t  metadata,
+				     const char           *utf8);
+
+#endif /* CAIRO_PDF_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-pdf-surface.c b/libs/cairo-1.16.0/src/cairo-pdf-surface.c
new file mode 100644
index 0000000..7eb61aa
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf-surface.c
@@ -0,0 +1,8521 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ * Copyright © 2006 Red Hat, Inc
+ * Copyright © 2007, 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf() */
+#include "cairoint.h"
+
+#include "cairo-pdf.h"
+#include "cairo-pdf-surface-private.h"
+#include "cairo-pdf-operators-private.h"
+#include "cairo-pdf-shading-private.h"
+
+#include "cairo-array-private.h"
+#include "cairo-analysis-surface-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-image-info-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-type3-glyph-surface-private.h"
+
+#include <zlib.h>
+
+/*
+ * Page Structure of the Generated PDF:
+ *
+ * Each page requiring fallbacks images contains a knockout group at
+ * the top level. The first operation of the knockout group paints a
+ * group containing all the supported drawing operations. Fallback
+ * images (if any) are painted in the knockout group. This ensures
+ * that fallback images do not composite with any content under the
+ * fallback images.
+ *
+ * Streams:
+ *
+ * This PDF surface has three types of streams:
+ *  - PDF Stream
+ *  - Content Stream
+ *  - Group Stream
+ *
+ * Calling _cairo_output_stream_printf (surface->output, ...) will
+ * write to the currently open stream.
+ *
+ * PDF Stream:
+ *   A PDF Stream may be opened and closed with the following functions:
+ *     _cairo_pdf_surface_open stream ()
+ *     _cairo_pdf_surface_close_stream ()
+ *
+ *   PDF Streams are written directly to the PDF file. They are used for
+ *   fonts, images and patterns.
+ *
+ * Content Stream:
+ *   The Content Stream is opened and closed with the following functions:
+ *     _cairo_pdf_surface_open_content_stream ()
+ *     _cairo_pdf_surface_close_content_stream ()
+ *
+ *   The Content Stream contains the text and graphics operators.
+ *
+ * Group Stream:
+ *   A Group Stream may be opened and closed with the following functions:
+ *     _cairo_pdf_surface_open_group ()
+ *     _cairo_pdf_surface_close_group ()
+ *
+ *   A Group Stream is a Form XObject. It is used for short sequences
+ *   of operators. As the content is very short the group is stored in
+ *   memory until it is closed. This allows some optimization such as
+ *   including the Resource dictionary and stream length inside the
+ *   XObject instead of using an indirect object.
+ */
+
+/**
+ * SECTION:cairo-pdf
+ * @Title: PDF Surfaces
+ * @Short_Description: Rendering PDF documents
+ * @See_Also: #cairo_surface_t
+ *
+ * The PDF surface is used to render cairo graphics to Adobe
+ * PDF files and is a multi-page vector surface backend.
+ *
+ * The following mime types are supported: %CAIRO_MIME_TYPE_JPEG,
+ * %CAIRO_MIME_TYPE_JP2, %CAIRO_MIME_TYPE_UNIQUE_ID,
+ * %CAIRO_MIME_TYPE_JBIG2, %CAIRO_MIME_TYPE_JBIG2_GLOBAL,
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID,
+ * %CAIRO_MIME_TYPE_CCITT_FAX, %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS.
+ *
+ * # JBIG2 Images #
+ * JBIG2 data in PDF must be in the embedded format as described in
+ * ISO/IEC 11544. Image specific JBIG2 data must be in
+ * %CAIRO_MIME_TYPE_JBIG2.  Any global segments in the JBIG2 data
+ * (segments with page association field set to 0) must be in
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL. The global data may be shared by
+ * multiple images. All images sharing the same global data must set
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID to a unique identifier. At least
+ * one of the images must provide the global data using
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL. The global data will only be
+ * embedded once and shared by all JBIG2 images with the same
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID.
+ *
+ * # CCITT Fax Images # {#ccitt}
+ * The %CAIRO_MIME_TYPE_CCITT_FAX mime data requires a number of decoding
+ * parameters These parameters are specified using %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS.
+ *
+ * %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS mime data must contain a string of the form
+ * "param1=value1 param2=value2 ...".
+ *
+ * @Columns: [required] An integer specifying the width of the image in pixels.
+ *
+ * @Rows: [required] An integer specifying the height of the image in scan lines.
+ *
+ * @K: [optional] An integer identifying the encoding scheme used. < 0
+ * is 2 dimensional Group 4, = 0 is Group3 1 dimensional, > 0 is mixed 1
+ * and 2 dimensional encoding. Default is 0.
+ *
+ * @EndOfLine: [optional] If true end-of-line bit patterns are present. Default is false.
+ *
+ * @EncodedByteAlign: [optional] If true the end of line is padded
+ * with 0 bits so the next line begins on a byte boundary. Default is false.
+ *
+ * @EndOfBlock: [optional] If true the data contains an end-of-block pattern. Default is true.
+ *
+ * @BlackIs1: [optional] If true 1 bits are black pixels. Default is false.
+ *
+ * @DamagedRowsBeforeError: [optional] An integer specifying the
+ * number of damages rows tolerated before an error occurs. Default is 0.
+ *
+ * Boolean values may be "true" or "false", or 1 or 0.
+ *
+ * These parameters are the same as the CCITTFaxDecode parameters in the
+ * [PostScript Language Reference](https://www.adobe.com/products/postscript/pdfs/PLRM.pdf)
+ * and [Portable Document Format (PDF)](https://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf).
+ * Refer to these documents for further details.
+ *
+ * An example %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS string is:
+ *
+ * <programlisting>
+ * "Columns=10230 Rows=40000 K=1 EndOfLine=true EncodedByteAlign=1 BlackIs1=false"
+ * </programlisting>
+ *
+ **/
+
+static cairo_bool_t
+_cairo_pdf_surface_get_extents (void		        *abstract_surface,
+				cairo_rectangle_int_t   *rectangle);
+
+/**
+ * CAIRO_HAS_PDF_SURFACE:
+ *
+ * Defined if the PDF surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.2
+ **/
+
+static const cairo_pdf_version_t _cairo_pdf_versions[] =
+{
+    CAIRO_PDF_VERSION_1_4,
+    CAIRO_PDF_VERSION_1_5
+};
+
+#define CAIRO_PDF_VERSION_LAST ARRAY_LENGTH (_cairo_pdf_versions)
+
+static const char * _cairo_pdf_version_strings[CAIRO_PDF_VERSION_LAST] =
+{
+    "PDF 1.4",
+    "PDF 1.5"
+};
+
+static const char *_cairo_pdf_supported_mime_types[] =
+{
+    CAIRO_MIME_TYPE_JPEG,
+    CAIRO_MIME_TYPE_JP2,
+    CAIRO_MIME_TYPE_UNIQUE_ID,
+    CAIRO_MIME_TYPE_JBIG2,
+    CAIRO_MIME_TYPE_JBIG2_GLOBAL,
+    CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID,
+    CAIRO_MIME_TYPE_CCITT_FAX,
+    CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
+    NULL
+};
+
+typedef struct _cairo_pdf_object {
+    long offset;
+} cairo_pdf_object_t;
+
+typedef struct _cairo_pdf_font {
+    unsigned int font_id;
+    unsigned int subset_id;
+    cairo_pdf_resource_t subset_resource;
+} cairo_pdf_font_t;
+
+typedef struct _cairo_pdf_rgb_linear_function {
+    cairo_pdf_resource_t resource;
+    double               color1[3];
+    double               color2[3];
+} cairo_pdf_rgb_linear_function_t;
+
+typedef struct _cairo_pdf_alpha_linear_function {
+    cairo_pdf_resource_t resource;
+    double               alpha1;
+    double               alpha2;
+} cairo_pdf_alpha_linear_function_t;
+
+static void
+_cairo_pdf_surface_clear (cairo_pdf_surface_t *surface);
+
+static void
+_cairo_pdf_smask_group_destroy (cairo_pdf_smask_group_t *group);
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_font (unsigned int        font_id,
+			     unsigned int        subset_id,
+			     void		*closure);
+
+static void
+_cairo_pdf_group_resources_init (cairo_pdf_group_resources_t *res);
+
+static cairo_int_status_t
+_cairo_pdf_surface_open_stream (cairo_pdf_surface_t	*surface,
+				cairo_pdf_resource_t    *resource,
+                                cairo_bool_t             compressed,
+				const char		*fmt,
+				...) CAIRO_PRINTF_FORMAT(4, 5);
+static cairo_int_status_t
+_cairo_pdf_surface_close_stream (cairo_pdf_surface_t	*surface);
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_surface (cairo_pdf_surface_t        *surface,
+				 cairo_pdf_source_surface_t *source,
+				 cairo_bool_t                test,
+				 cairo_bool_t               *is_image);
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface);
+
+static void
+_cairo_pdf_surface_write_pages (cairo_pdf_surface_t *surface);
+
+static cairo_pdf_resource_t
+_cairo_pdf_surface_write_catalog (cairo_pdf_surface_t *surface);
+
+static long
+_cairo_pdf_surface_write_xref (cairo_pdf_surface_t *surface);
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_patterns_and_smask_groups (cairo_pdf_surface_t *surface,
+						    cairo_bool_t         finish);
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface);
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_font_subsets (cairo_pdf_surface_t *surface);
+
+static cairo_bool_t
+_cairo_pdf_source_surface_equal (const void *key_a, const void *key_b);
+
+static const cairo_surface_backend_t cairo_pdf_surface_backend;
+static const cairo_paginated_surface_backend_t cairo_pdf_surface_paginated_backend;
+
+cairo_pdf_resource_t
+_cairo_pdf_surface_new_object (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_resource_t resource;
+    cairo_int_status_t status;
+    cairo_pdf_object_t object;
+
+    object.offset = _cairo_output_stream_get_position (surface->output);
+
+    status = _cairo_array_append (&surface->objects, &object);
+    if (unlikely (status)) {
+	resource.id = 0;
+	return resource;
+    }
+
+    resource = surface->next_available_resource;
+    surface->next_available_resource.id++;
+
+    return resource;
+}
+
+void
+_cairo_pdf_surface_update_object (cairo_pdf_surface_t	*surface,
+				  cairo_pdf_resource_t	 resource)
+{
+    cairo_pdf_object_t *object;
+
+    object = _cairo_array_index (&surface->objects, resource.id - 1);
+    object->offset = _cairo_output_stream_get_position (surface->output);
+}
+
+static void
+_cairo_pdf_surface_set_size_internal (cairo_pdf_surface_t *surface,
+				      double		  width,
+				      double		  height)
+{
+    surface->width = width;
+    surface->height = height;
+    surface->surface_extents.x = 0;
+    surface->surface_extents.y = 0;
+    surface->surface_extents.width  = ceil (surface->width);
+    surface->surface_extents.height = ceil (surface->height);
+}
+
+static cairo_bool_t
+_path_covers_bbox (cairo_pdf_surface_t *surface,
+		   cairo_path_fixed_t *path)
+{
+    cairo_box_t box;
+
+    return _cairo_path_fixed_is_box (path, &box) &&
+	   box.p1.x <= 0 &&
+	   box.p1.y <= 0 &&
+	   box.p2.x >= _cairo_fixed_from_double (surface->width) &&
+	   box.p2.y >= _cairo_fixed_from_double (surface->height);
+}
+
+static cairo_status_t
+_cairo_pdf_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+						cairo_path_fixed_t	*path,
+						cairo_fill_rule_t	fill_rule,
+						double			tolerance,
+						cairo_antialias_t	antialias)
+{
+    cairo_pdf_surface_t *surface = cairo_container_of (clipper,
+						       cairo_pdf_surface_t,
+						       clipper);
+    cairo_int_status_t status;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    if (path == NULL) {
+	_cairo_output_stream_printf (surface->output, "Q q\n");
+
+	surface->current_pattern_is_solid_color = FALSE;
+	_cairo_pdf_operators_reset (&surface->pdf_operators);
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (_path_covers_bbox (surface, path))
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_pdf_operators_clip (&surface->pdf_operators, path, fill_rule);
+}
+
+static cairo_surface_t *
+_cairo_pdf_surface_create_for_stream_internal (cairo_output_stream_t	*output,
+					       double			 width,
+					       double			 height)
+{
+    cairo_pdf_surface_t *surface;
+    cairo_status_t status, status_ignored;
+
+    surface = _cairo_malloc (sizeof (cairo_pdf_surface_t));
+    if (unlikely (surface == NULL)) {
+	/* destroy stream on behalf of caller */
+	status = _cairo_output_stream_destroy (output);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_pdf_surface_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 TRUE); /* is_vector */
+
+    surface->output = output;
+    surface->width = width;
+    surface->height = height;
+    cairo_matrix_init (&surface->cairo_to_pdf, 1, 0, 0, 1, 0, 0);
+    surface->in_xobject = FALSE;
+    surface->surface_extents.x = 0;
+    surface->surface_extents.y = 0;
+    surface->surface_extents.width  = ceil (surface->width);
+    surface->surface_extents.height = ceil (surface->height);
+    surface->surface_bounded = TRUE;
+
+    _cairo_array_init (&surface->objects, sizeof (cairo_pdf_object_t));
+    _cairo_array_init (&surface->pages, sizeof (cairo_pdf_resource_t));
+    _cairo_array_init (&surface->rgb_linear_functions, sizeof (cairo_pdf_rgb_linear_function_t));
+    _cairo_array_init (&surface->alpha_linear_functions, sizeof (cairo_pdf_alpha_linear_function_t));
+    _cairo_array_init (&surface->fonts, sizeof (cairo_pdf_font_t));
+    _cairo_array_init (&surface->smask_groups, sizeof (cairo_pdf_smask_group_t *));
+    _cairo_array_init (&surface->knockout_group, sizeof (cairo_pdf_resource_t));
+
+    _cairo_array_init (&surface->page_patterns, sizeof (cairo_pdf_pattern_t));
+    _cairo_array_init (&surface->page_surfaces, sizeof (cairo_pdf_source_surface_t));
+    _cairo_array_init (&surface->doc_surfaces, sizeof (cairo_pdf_source_surface_t));
+    _cairo_array_init (&surface->jbig2_global, sizeof (cairo_pdf_jbig2_global_t));
+    _cairo_array_init (&surface->page_heights, sizeof (double));
+    surface->all_surfaces = _cairo_hash_table_create (_cairo_pdf_source_surface_equal);
+    if (unlikely (surface->all_surfaces == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto BAIL0;
+    }
+
+    _cairo_pdf_group_resources_init (&surface->resources);
+
+    surface->font_subsets = _cairo_scaled_font_subsets_create_composite ();
+    if (! surface->font_subsets) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto BAIL1;
+    }
+
+    _cairo_scaled_font_subsets_enable_latin_subset (surface->font_subsets, TRUE);
+
+    surface->next_available_resource.id = 1;
+    surface->pages_resource = _cairo_pdf_surface_new_object (surface);
+    if (surface->pages_resource.id == 0) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto BAIL2;
+    }
+
+    surface->struct_tree_root.id = 0;
+    surface->pdf_version = CAIRO_PDF_VERSION_1_5;
+    surface->compress_content = TRUE;
+    surface->pdf_stream.active = FALSE;
+    surface->pdf_stream.old_output = NULL;
+    surface->group_stream.active = FALSE;
+    surface->group_stream.stream = NULL;
+    surface->group_stream.mem_stream = NULL;
+
+    surface->paginated_mode = CAIRO_PAGINATED_MODE_ANALYZE;
+
+    surface->force_fallbacks = FALSE;
+    surface->select_pattern_gstate_saved = FALSE;
+    surface->current_pattern_is_solid_color = FALSE;
+    surface->current_operator = CAIRO_OPERATOR_OVER;
+    surface->header_emitted = FALSE;
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_pdf_surface_clipper_intersect_clip_path);
+
+    _cairo_pdf_operators_init (&surface->pdf_operators,
+			       surface->output,
+			       &surface->cairo_to_pdf,
+			       surface->font_subsets,
+			       FALSE);
+    _cairo_pdf_operators_set_font_subsets_callback (&surface->pdf_operators,
+						    _cairo_pdf_surface_add_font,
+						    surface);
+    _cairo_pdf_operators_enable_actual_text(&surface->pdf_operators, TRUE);
+
+    status = _cairo_pdf_interchange_init (surface);
+    if (unlikely (status))
+	goto BAIL2;
+
+    surface->page_parent_tree = -1;
+    _cairo_array_init (&surface->page_annots, sizeof (cairo_pdf_resource_t));
+    surface->tagged = FALSE;
+    surface->current_page_label = NULL;
+    _cairo_array_init (&surface->page_labels, sizeof (char *));
+    surface->outlines_dict_res.id = 0;
+    surface->names_dict_res.id = 0;
+    surface->docinfo_res.id = 0;
+    surface->page_labels_res.id = 0;
+    surface->thumbnail_width = 0;
+    surface->thumbnail_height = 0;
+    surface->thumbnail_image = NULL;
+
+    if (getenv ("CAIRO_DEBUG_PDF") != NULL)
+	surface->compress_content = FALSE;
+
+    surface->paginated_surface =  _cairo_paginated_surface_create (
+	                                  &surface->base,
+					  CAIRO_CONTENT_COLOR_ALPHA,
+					  &cairo_pdf_surface_paginated_backend);
+
+    status = surface->paginated_surface->status;
+    if (status == CAIRO_STATUS_SUCCESS) {
+	/* paginated keeps the only reference to surface now, drop ours */
+	cairo_surface_destroy (&surface->base);
+	return surface->paginated_surface;
+    }
+
+BAIL2:
+    _cairo_scaled_font_subsets_destroy (surface->font_subsets);
+BAIL1:
+    _cairo_hash_table_destroy (surface->all_surfaces);
+BAIL0:
+    _cairo_array_fini (&surface->objects);
+    free (surface);
+
+    /* destroy stream on behalf of caller */
+    status_ignored = _cairo_output_stream_destroy (output);
+
+    return _cairo_surface_create_in_error (status);
+}
+
+/**
+ * cairo_pdf_surface_create_for_stream:
+ * @write_func: a #cairo_write_func_t to accept the output data, may be %NULL
+ *              to indicate a no-op @write_func. With a no-op @write_func,
+ *              the surface may be queried or used as a source without
+ *              generating any temporary files.
+ * @closure: the closure argument for @write_func
+ * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
+ * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
+ *
+ * Creates a PDF surface of the specified size in points to be written
+ * incrementally to the stream represented by @write_func and @closure.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_pdf_surface_create_for_stream (cairo_write_func_t		 write_func,
+				     void			*closure,
+				     double			 width_in_points,
+				     double			 height_in_points)
+{
+    cairo_output_stream_t *output;
+
+    output = _cairo_output_stream_create (write_func, NULL, closure);
+    if (_cairo_output_stream_get_status (output))
+	return _cairo_surface_create_in_error (_cairo_output_stream_destroy (output));
+
+    return _cairo_pdf_surface_create_for_stream_internal (output,
+							  width_in_points,
+							  height_in_points);
+}
+
+/**
+ * cairo_pdf_surface_create:
+ * @filename: a filename for the PDF output (must be writable), %NULL may be
+ *            used to specify no output. This will generate a PDF surface that
+ *            may be queried and used as a source, without generating a
+ *            temporary file.
+ * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
+ * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
+ *
+ * Creates a PDF surface of the specified size in points to be written
+ * to @filename.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_pdf_surface_create (const char		*filename,
+			  double		 width_in_points,
+			  double		 height_in_points)
+{
+    cairo_output_stream_t *output;
+
+    output = _cairo_output_stream_create_for_filename (filename);
+    if (_cairo_output_stream_get_status (output))
+	return _cairo_surface_create_in_error (_cairo_output_stream_destroy (output));
+
+    return _cairo_pdf_surface_create_for_stream_internal (output,
+							  width_in_points,
+							  height_in_points);
+}
+
+static cairo_bool_t
+_cairo_surface_is_pdf (cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_pdf_surface_backend;
+}
+
+/* If the abstract_surface is a paginated surface, and that paginated
+ * surface's target is a pdf_surface, then set pdf_surface to that
+ * target. Otherwise return FALSE.
+ */
+static cairo_bool_t
+_extract_pdf_surface (cairo_surface_t		 *surface,
+		      cairo_pdf_surface_t	**pdf_surface)
+{
+    cairo_surface_t *target;
+    cairo_status_t status_ignored;
+
+    if (surface->status)
+	return FALSE;
+    if (surface->finished) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+        return FALSE;
+    }
+
+    if (! _cairo_surface_is_paginated (surface)) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return FALSE;
+    }
+
+    target = _cairo_paginated_surface_get_target (surface);
+    if (target->status) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   target->status);
+	return FALSE;
+    }
+    if (target->finished) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return FALSE;
+    }
+
+    if (! _cairo_surface_is_pdf (target)) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return FALSE;
+    }
+
+    *pdf_surface = (cairo_pdf_surface_t *) target;
+    return TRUE;
+}
+
+/**
+ * cairo_pdf_surface_restrict_to_version:
+ * @surface: a PDF #cairo_surface_t
+ * @version: PDF version
+ *
+ * Restricts the generated PDF file to @version. See cairo_pdf_get_versions()
+ * for a list of available version values that can be used here.
+ *
+ * This function should only be called before any drawing operations
+ * have been performed on the given surface. The simplest way to do
+ * this is to call this function immediately after creating the
+ * surface.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_pdf_surface_restrict_to_version (cairo_surface_t 		*abstract_surface,
+				       cairo_pdf_version_t  	 version)
+{
+    cairo_pdf_surface_t *surface = NULL; /* hide compiler warning */
+
+    if (! _extract_pdf_surface (abstract_surface, &surface))
+	return;
+
+    if (version < CAIRO_PDF_VERSION_LAST)
+	surface->pdf_version = version;
+
+    _cairo_pdf_operators_enable_actual_text(&surface->pdf_operators,
+					    version >= CAIRO_PDF_VERSION_1_5);
+}
+
+/**
+ * cairo_pdf_get_versions:
+ * @versions: supported version list
+ * @num_versions: list length
+ *
+ * Used to retrieve the list of supported versions. See
+ * cairo_pdf_surface_restrict_to_version().
+ *
+ * Since: 1.10
+ **/
+void
+cairo_pdf_get_versions (cairo_pdf_version_t const	**versions,
+                        int                     	 *num_versions)
+{
+    if (versions != NULL)
+	*versions = _cairo_pdf_versions;
+
+    if (num_versions != NULL)
+	*num_versions = CAIRO_PDF_VERSION_LAST;
+}
+
+/**
+ * cairo_pdf_version_to_string:
+ * @version: a version id
+ *
+ * Get the string representation of the given @version id. This function
+ * will return %NULL if @version isn't valid. See cairo_pdf_get_versions()
+ * for a way to get the list of valid version ids.
+ *
+ * Return value: the string associated to given version.
+ *
+ * Since: 1.10
+ **/
+const char *
+cairo_pdf_version_to_string (cairo_pdf_version_t version)
+{
+    if (version >= CAIRO_PDF_VERSION_LAST)
+	return NULL;
+
+    return _cairo_pdf_version_strings[version];
+}
+
+/**
+ * cairo_pdf_surface_set_size:
+ * @surface: a PDF #cairo_surface_t
+ * @width_in_points: new surface width, in points (1 point == 1/72.0 inch)
+ * @height_in_points: new surface height, in points (1 point == 1/72.0 inch)
+ *
+ * Changes the size of a PDF surface for the current (and
+ * subsequent) pages.
+ *
+ * This function should only be called before any drawing operations
+ * have been performed on the current page. The simplest way to do
+ * this is to call this function immediately after creating the
+ * surface or immediately after completing a page with either
+ * cairo_show_page() or cairo_copy_page().
+ *
+ * Since: 1.2
+ **/
+void
+cairo_pdf_surface_set_size (cairo_surface_t	*surface,
+			    double		 width_in_points,
+			    double		 height_in_points)
+{
+    cairo_pdf_surface_t *pdf_surface = NULL; /* hide compiler warning */
+    cairo_status_t status;
+
+    if (! _extract_pdf_surface (surface, &pdf_surface))
+	return;
+
+    _cairo_pdf_surface_set_size_internal (pdf_surface,
+					  width_in_points,
+					  height_in_points);
+    status = _cairo_paginated_surface_set_size (pdf_surface->paginated_surface,
+						width_in_points,
+						height_in_points);
+    if (status)
+	status = _cairo_surface_set_error (surface, status);
+}
+
+/**
+ * CAIRO_PDF_OUTLINE_ROOT:
+ *
+ * The root outline item in cairo_pdf_surface_add_outline().
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * cairo_pdf_surface_add_outline:
+ * @surface: a PDF #cairo_surface_t
+ * @parent_id: the id of the parent item or %CAIRO_PDF_OUTLINE_ROOT if this is a top level item.
+ * @utf8: the name of the outline
+ * @link_attribs: the link attributes specifying where this outline links to
+ * @flags: outline item flags
+ *
+ * Add an item to the document outline hierarchy with the name @utf8
+ * that links to the location specified by @link_attribs. Link
+ * attributes have the same keys and values as the [Link Tag][link],
+ * excluding the "rect" attribute. The item will be a child of the
+ * item with id @parent_id. Use %CAIRO_PDF_OUTLINE_ROOT as the parent
+ * id of top level items.
+ *
+ * Return value: the id for the added item.
+ *
+ * Since: 1.16
+ **/
+int
+cairo_pdf_surface_add_outline (cairo_surface_t	         *surface,
+			       int                        parent_id,
+			       const char                *utf8,
+			       const char                *link_attribs,
+			       cairo_pdf_outline_flags_t  flags)
+{
+    cairo_pdf_surface_t *pdf_surface = NULL; /* hide compiler warning */
+    cairo_status_t status;
+    int id = 0;
+
+    if (! _extract_pdf_surface (surface, &pdf_surface))
+	return 0;
+
+    status = _cairo_pdf_interchange_add_outline (pdf_surface,
+						 parent_id,
+						 utf8,
+						 link_attribs,
+						 flags,
+						 &id);
+    if (status)
+	status = _cairo_surface_set_error (surface, status);
+
+    return id;
+}
+
+/**
+ * cairo_pdf_surface_set_metadata:
+ * @surface: a PDF #cairo_surface_t
+ * @metadata: The metadata item to set.
+ * @utf8: metadata value
+ *
+ * Set document metadata. The %CAIRO_PDF_METADATA_CREATE_DATE and
+ * %CAIRO_PDF_METADATA_MOD_DATE values must be in ISO-8601 format:
+ * YYYY-MM-DDThh:mm:ss. An optional timezone of the form "[+/-]hh:mm"
+ * or "Z" for UTC time can be appended. All other metadata values can be any UTF-8
+ * string.
+ *
+ * For example:
+ * <informalexample><programlisting>
+ * cairo_pdf_surface_set_metadata (surface, CAIRO_PDF_METADATA_TITLE, "My Document");
+ * cairo_pdf_surface_set_metadata (surface, CAIRO_PDF_METADATA_CREATE_DATE, "2015-12-31T23:59+02:00");
+ * </programlisting></informalexample>
+ *
+ * Since: 1.16
+ **/
+void
+cairo_pdf_surface_set_metadata (cairo_surface_t      *surface,
+				cairo_pdf_metadata_t  metadata,
+                                const char           *utf8)
+{
+    cairo_pdf_surface_t *pdf_surface = NULL; /* hide compiler warning */
+    cairo_status_t status;
+
+    if (! _extract_pdf_surface (surface, &pdf_surface))
+	return;
+
+    status = _cairo_pdf_interchange_set_metadata (pdf_surface, metadata, utf8);
+    if (status)
+	status = _cairo_surface_set_error (surface, status);
+}
+
+/**
+ * cairo_pdf_surface_set_page_label:
+ * @surface: a PDF #cairo_surface_t
+ * @utf8: The page label.
+ *
+ * Set page label for the current page.
+ *
+ * Since: 1.16
+ **/
+void
+cairo_pdf_surface_set_page_label (cairo_surface_t *surface,
+                                  const char      *utf8)
+{
+    cairo_pdf_surface_t *pdf_surface = NULL; /* hide compiler warning */
+
+    if (! _extract_pdf_surface (surface, &pdf_surface))
+	return;
+
+    free (pdf_surface->current_page_label);
+    pdf_surface->current_page_label = utf8 ? strdup (utf8) : NULL;
+}
+
+/**
+ * cairo_pdf_surface_set_thumbnail_size:
+ * @surface: a PDF #cairo_surface_t
+ * @width: Thumbnail width.
+ * @height: Thumbnail height
+ *
+ * Set the thumbnail image size for the current and all subsequent
+ * pages. Setting a width or height of 0 disables thumbnails for the
+ * current and subsequent pages.
+ *
+ * Since: 1.16
+ **/
+void
+cairo_pdf_surface_set_thumbnail_size (cairo_surface_t *surface,
+				      int              width,
+				      int              height)
+{
+    cairo_pdf_surface_t *pdf_surface = NULL; /* hide compiler warning */
+
+    if (! _extract_pdf_surface (surface, &pdf_surface))
+	return;
+
+    pdf_surface->thumbnail_width = width;
+    pdf_surface->thumbnail_height = height;
+}
+
+static void
+_cairo_pdf_surface_clear (cairo_pdf_surface_t *surface)
+{
+    int i, size;
+    cairo_pdf_pattern_t *pattern;
+    cairo_pdf_source_surface_t *src_surface;
+    cairo_pdf_smask_group_t *group;
+
+    size = _cairo_array_num_elements (&surface->page_patterns);
+    for (i = 0; i < size; i++) {
+	pattern = (cairo_pdf_pattern_t *) _cairo_array_index (&surface->page_patterns, i);
+	cairo_pattern_destroy (pattern->pattern);
+    }
+    _cairo_array_truncate (&surface->page_patterns, 0);
+
+    size = _cairo_array_num_elements (&surface->page_surfaces);
+    for (i = 0; i < size; i++) {
+	src_surface = (cairo_pdf_source_surface_t *) _cairo_array_index (&surface->page_surfaces, i);
+	cairo_surface_destroy (src_surface->surface);
+    }
+    _cairo_array_truncate (&surface->page_surfaces, 0);
+
+    size = _cairo_array_num_elements (&surface->smask_groups);
+    for (i = 0; i < size; i++) {
+	_cairo_array_copy_element (&surface->smask_groups, i, &group);
+	_cairo_pdf_smask_group_destroy (group);
+    }
+    _cairo_array_truncate (&surface->smask_groups, 0);
+    _cairo_array_truncate (&surface->knockout_group, 0);
+    _cairo_array_truncate (&surface->page_annots, 0);
+
+    cairo_surface_destroy (&surface->thumbnail_image->base);
+    surface->thumbnail_image = NULL;
+}
+
+static void
+_cairo_pdf_group_resources_init (cairo_pdf_group_resources_t *res)
+{
+    int i;
+
+    for (i = 0; i < CAIRO_NUM_OPERATORS; i++)
+	res->operators[i] = FALSE;
+
+    _cairo_array_init (&res->alphas, sizeof (double));
+    _cairo_array_init (&res->smasks, sizeof (cairo_pdf_resource_t));
+    _cairo_array_init (&res->patterns, sizeof (cairo_pdf_resource_t));
+    _cairo_array_init (&res->shadings, sizeof (cairo_pdf_resource_t));
+    _cairo_array_init (&res->xobjects, sizeof (cairo_pdf_resource_t));
+    _cairo_array_init (&res->fonts, sizeof (cairo_pdf_font_t));
+}
+
+static void
+_cairo_pdf_group_resources_fini (cairo_pdf_group_resources_t *res)
+{
+    _cairo_array_fini (&res->alphas);
+    _cairo_array_fini (&res->smasks);
+    _cairo_array_fini (&res->patterns);
+    _cairo_array_fini (&res->shadings);
+    _cairo_array_fini (&res->xobjects);
+    _cairo_array_fini (&res->fonts);
+}
+
+static void
+_cairo_pdf_group_resources_clear (cairo_pdf_group_resources_t *res)
+{
+    int i;
+
+    for (i = 0; i < CAIRO_NUM_OPERATORS; i++)
+	res->operators[i] = FALSE;
+
+    _cairo_array_truncate (&res->alphas, 0);
+    _cairo_array_truncate (&res->smasks, 0);
+    _cairo_array_truncate (&res->patterns, 0);
+    _cairo_array_truncate (&res->shadings, 0);
+    _cairo_array_truncate (&res->xobjects, 0);
+    _cairo_array_truncate (&res->fonts, 0);
+}
+
+static void
+_cairo_pdf_surface_add_operator (cairo_pdf_surface_t *surface,
+				 cairo_operator_t     op)
+{
+    cairo_pdf_group_resources_t *res = &surface->resources;
+
+    res->operators[op] = TRUE;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_alpha (cairo_pdf_surface_t *surface,
+			      double               alpha,
+			      int                 *index)
+{
+    int num_alphas, i;
+    double other;
+    cairo_int_status_t status;
+    cairo_pdf_group_resources_t *res = &surface->resources;
+
+    num_alphas = _cairo_array_num_elements (&res->alphas);
+    for (i = 0; i < num_alphas; i++) {
+	_cairo_array_copy_element (&res->alphas, i, &other);
+	if (alpha == other) {
+	    *index = i;
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    status = _cairo_array_append (&res->alphas, &alpha);
+    if (unlikely (status))
+	return status;
+
+    *index = _cairo_array_num_elements (&res->alphas) - 1;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_smask (cairo_pdf_surface_t  *surface,
+			      cairo_pdf_resource_t  smask)
+{
+    return _cairo_array_append (&(surface->resources.smasks), &smask);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_pattern (cairo_pdf_surface_t  *surface,
+				cairo_pdf_resource_t  pattern)
+{
+    return _cairo_array_append (&(surface->resources.patterns), &pattern);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_shading (cairo_pdf_surface_t  *surface,
+				cairo_pdf_resource_t  shading)
+{
+    return _cairo_array_append (&(surface->resources.shadings), &shading);
+}
+
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_xobject (cairo_pdf_surface_t  *surface,
+				cairo_pdf_resource_t  xobject)
+{
+    return _cairo_array_append (&(surface->resources.xobjects), &xobject);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_font (unsigned int        font_id,
+			     unsigned int        subset_id,
+			     void		*closure)
+{
+    cairo_pdf_surface_t *surface = closure;
+    cairo_pdf_font_t font;
+    int num_fonts, i;
+    cairo_int_status_t status;
+    cairo_pdf_group_resources_t *res = &surface->resources;
+
+    num_fonts = _cairo_array_num_elements (&res->fonts);
+    for (i = 0; i < num_fonts; i++) {
+	_cairo_array_copy_element (&res->fonts, i, &font);
+	if (font.font_id == font_id &&
+	    font.subset_id == subset_id)
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    num_fonts = _cairo_array_num_elements (&surface->fonts);
+    for (i = 0; i < num_fonts; i++) {
+	_cairo_array_copy_element (&surface->fonts, i, &font);
+	if (font.font_id == font_id &&
+	    font.subset_id == subset_id)
+	    return _cairo_array_append (&res->fonts, &font);
+    }
+
+    font.font_id = font_id;
+    font.subset_id = subset_id;
+    font.subset_resource = _cairo_pdf_surface_new_object (surface);
+    if (font.subset_resource.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_array_append (&surface->fonts, &font);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_array_append (&res->fonts, &font);
+}
+
+static cairo_pdf_resource_t
+_cairo_pdf_surface_get_font_resource (cairo_pdf_surface_t *surface,
+				      unsigned int         font_id,
+				      unsigned int         subset_id)
+{
+    cairo_pdf_font_t font;
+    int num_fonts, i;
+
+    num_fonts = _cairo_array_num_elements (&surface->fonts);
+    for (i = 0; i < num_fonts; i++) {
+	_cairo_array_copy_element (&surface->fonts, i, &font);
+	if (font.font_id == font_id && font.subset_id == subset_id)
+	    return font.subset_resource;
+    }
+
+    font.subset_resource.id = 0;
+    return font.subset_resource;
+}
+
+static const char *
+_cairo_operator_to_pdf_blend_mode (cairo_operator_t op)
+{
+    switch (op) {
+    /* The extend blend mode operators */
+    case CAIRO_OPERATOR_MULTIPLY:       return "Multiply";
+    case CAIRO_OPERATOR_SCREEN:         return "Screen";
+    case CAIRO_OPERATOR_OVERLAY:        return "Overlay";
+    case CAIRO_OPERATOR_DARKEN:         return "Darken";
+    case CAIRO_OPERATOR_LIGHTEN:        return "Lighten";
+    case CAIRO_OPERATOR_COLOR_DODGE:    return "ColorDodge";
+    case CAIRO_OPERATOR_COLOR_BURN:     return "ColorBurn";
+    case CAIRO_OPERATOR_HARD_LIGHT:     return "HardLight";
+    case CAIRO_OPERATOR_SOFT_LIGHT:     return "SoftLight";
+    case CAIRO_OPERATOR_DIFFERENCE:     return "Difference";
+    case CAIRO_OPERATOR_EXCLUSION:      return "Exclusion";
+    case CAIRO_OPERATOR_HSL_HUE:        return "Hue";
+    case CAIRO_OPERATOR_HSL_SATURATION: return "Saturation";
+    case CAIRO_OPERATOR_HSL_COLOR:      return "Color";
+    case CAIRO_OPERATOR_HSL_LUMINOSITY: return "Luminosity";
+
+    default:
+    /* The original Porter-Duff set */
+    case CAIRO_OPERATOR_CLEAR:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_OUT:
+    case CAIRO_OPERATOR_ATOP:
+    case CAIRO_OPERATOR_DEST:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_DEST_OUT:
+    case CAIRO_OPERATOR_DEST_ATOP:
+    case CAIRO_OPERATOR_XOR:
+    case CAIRO_OPERATOR_ADD:
+    case CAIRO_OPERATOR_SATURATE:
+	return "Normal";
+    }
+}
+
+static void
+_cairo_pdf_surface_emit_group_resources (cairo_pdf_surface_t         *surface,
+					 cairo_pdf_group_resources_t *res)
+{
+    int num_alphas, num_smasks, num_resources, i;
+    double alpha;
+    cairo_pdf_resource_t *smask, *pattern, *shading, *xobject;
+    cairo_pdf_font_t *font;
+
+    _cairo_output_stream_printf (surface->output, "<<\n");
+
+    num_alphas = _cairo_array_num_elements (&res->alphas);
+    num_smasks = _cairo_array_num_elements (&res->smasks);
+    if (num_alphas > 0 || num_smasks > 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /ExtGState <<\n");
+
+	for (i = 0; i < CAIRO_NUM_OPERATORS; i++) {
+	    if (res->operators[i]) {
+		_cairo_output_stream_printf (surface->output,
+					     "      /b%d << /BM /%s >>\n",
+					     i, _cairo_operator_to_pdf_blend_mode(i));
+	    }
+	}
+
+	for (i = 0; i < num_alphas; i++) {
+	    _cairo_array_copy_element (&res->alphas, i, &alpha);
+	    _cairo_output_stream_printf (surface->output,
+					 "      /a%d << /CA %f /ca %f >>\n",
+					 i, alpha, alpha);
+	}
+
+	for (i = 0; i < num_smasks; i++) {
+	    smask = _cairo_array_index (&res->smasks, i);
+	    _cairo_output_stream_printf (surface->output,
+					 "      /s%d %d 0 R\n",
+					 smask->id, smask->id);
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     "   >>\n");
+    }
+
+    num_resources = _cairo_array_num_elements (&res->patterns);
+    if (num_resources > 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Pattern <<");
+	for (i = 0; i < num_resources; i++) {
+	    pattern = _cairo_array_index (&res->patterns, i);
+	    _cairo_output_stream_printf (surface->output,
+					 " /p%d %d 0 R",
+					 pattern->id, pattern->id);
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     " >>\n");
+    }
+
+    num_resources = _cairo_array_num_elements (&res->shadings);
+    if (num_resources > 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Shading <<");
+	for (i = 0; i < num_resources; i++) {
+	    shading = _cairo_array_index (&res->shadings, i);
+	    _cairo_output_stream_printf (surface->output,
+					 " /sh%d %d 0 R",
+					 shading->id, shading->id);
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     " >>\n");
+    }
+
+    num_resources = _cairo_array_num_elements (&res->xobjects);
+    if (num_resources > 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /XObject <<");
+
+	for (i = 0; i < num_resources; i++) {
+	    xobject = _cairo_array_index (&res->xobjects, i);
+	    _cairo_output_stream_printf (surface->output,
+					 " /x%d %d 0 R",
+					 xobject->id, xobject->id);
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     " >>\n");
+    }
+
+    num_resources = _cairo_array_num_elements (&res->fonts);
+    if (num_resources > 0) {
+	_cairo_output_stream_printf (surface->output,"   /Font <<\n");
+	for (i = 0; i < num_resources; i++) {
+	    font = _cairo_array_index (&res->fonts, i);
+	    _cairo_output_stream_printf (surface->output,
+					 "      /f-%d-%d %d 0 R\n",
+					 font->font_id,
+					 font->subset_id,
+					 font->subset_resource.id);
+	}
+	_cairo_output_stream_printf (surface->output, "   >>\n");
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n");
+}
+
+static cairo_pdf_smask_group_t *
+_cairo_pdf_surface_create_smask_group (cairo_pdf_surface_t	    *surface,
+				       const cairo_rectangle_int_t  *extents)
+{
+    cairo_pdf_smask_group_t	*group;
+
+    group = calloc (1, sizeof (cairo_pdf_smask_group_t));
+    if (unlikely (group == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    group->group_res = _cairo_pdf_surface_new_object (surface);
+    if (group->group_res.id == 0) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	free (group);
+	return NULL;
+    }
+    group->width = surface->width;
+    group->height = surface->height;
+    if (extents != NULL) {
+	group->extents = *extents;
+    } else {
+	group->extents.x = 0;
+	group->extents.y = 0;
+	group->extents.width = surface->width;
+	group->extents.height = surface->height;
+    }
+
+    return group;
+}
+
+static void
+_cairo_pdf_smask_group_destroy (cairo_pdf_smask_group_t *group)
+{
+    if (group->operation == PDF_FILL ||	group->operation == PDF_STROKE)
+	_cairo_path_fixed_fini (&group->path);
+    if (group->source)
+	cairo_pattern_destroy (group->source);
+    if (group->mask)
+	cairo_pattern_destroy (group->mask);
+    free (group->utf8);
+    free (group->glyphs);
+    free (group->clusters);
+    if (group->scaled_font)
+	cairo_scaled_font_destroy (group->scaled_font);
+    free (group);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_smask_group (cairo_pdf_surface_t     *surface,
+				    cairo_pdf_smask_group_t *group)
+{
+    return _cairo_array_append (&surface->smask_groups, &group);
+}
+
+static cairo_bool_t
+_cairo_pdf_source_surface_equal (const void *key_a, const void *key_b)
+{
+    const cairo_pdf_source_surface_entry_t *a = key_a;
+    const cairo_pdf_source_surface_entry_t *b = key_b;
+
+    if (a->interpolate != b->interpolate)
+	return FALSE;
+
+    if (a->unique_id && b->unique_id && a->unique_id_length == b->unique_id_length)
+	return (memcmp (a->unique_id, b->unique_id, a->unique_id_length) == 0);
+
+    return (a->id == b->id);
+}
+
+static void
+_cairo_pdf_source_surface_init_key (cairo_pdf_source_surface_entry_t *key)
+{
+    if (key->unique_id && key->unique_id_length > 0) {
+	key->base.hash = _cairo_hash_bytes (_CAIRO_HASH_INIT_VALUE,
+					    key->unique_id, key->unique_id_length);
+    } else {
+	key->base.hash = key->id;
+    }
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_acquire_source_image_from_pattern (cairo_pdf_surface_t          *surface,
+						      const cairo_pattern_t        *pattern,
+						      cairo_image_surface_t       **image,
+						      void                        **image_extra)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_pattern_t *surf_pat = (cairo_surface_pattern_t *) pattern;
+	return _cairo_surface_acquire_source_image (surf_pat->surface, image, image_extra);
+    } break;
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE: {
+	cairo_surface_t *surf;
+	surf = _cairo_raster_source_pattern_acquire (pattern, &surface->base, NULL);
+	if (!surf)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	assert (_cairo_surface_is_image (surf));
+	*image = (cairo_image_surface_t *) surf;
+    } break;
+
+    case CAIRO_PATTERN_TYPE_SOLID:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_pdf_surface_release_source_image_from_pattern (cairo_pdf_surface_t          *surface,
+						      const cairo_pattern_t        *pattern,
+						      cairo_image_surface_t        *image,
+						      void                         *image_extra)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_pattern_t *surf_pat = (cairo_surface_pattern_t *) pattern;
+	_cairo_surface_release_source_image (surf_pat->surface, image, image_extra);
+    } break;
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	_cairo_raster_source_pattern_release (pattern, &image->base);
+	break;
+
+    case CAIRO_PATTERN_TYPE_SOLID:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    default:
+
+	ASSERT_NOT_REACHED;
+	break;
+    }
+}
+
+static cairo_int_status_t
+_get_source_surface_extents (cairo_surface_t         *source,
+			     cairo_rectangle_int_t   *extents,
+			     cairo_bool_t            *bounded,
+			     cairo_bool_t            *subsurface)
+{
+    cairo_int_status_t status;
+
+    *bounded = TRUE;
+    *subsurface = FALSE;
+    if (source->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	cairo_surface_t *free_me = NULL;
+
+	if (_cairo_surface_is_snapshot (source))
+	    free_me = source = _cairo_surface_snapshot_get_target (source);
+
+	if (source->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) source;
+
+	    *extents = sub->extents;
+	    *subsurface = TRUE;
+	} else {
+	    cairo_box_t box;
+
+	    *bounded = _cairo_surface_get_extents (source, extents);
+	    if (! *bounded) {
+		status = _cairo_recording_surface_get_ink_bbox ((cairo_recording_surface_t *)source,
+								&box, NULL);
+		if (unlikely (status)) {
+		    cairo_surface_destroy (free_me);
+		    return status;
+		}
+		_cairo_box_round_to_rectangle (&box, extents);
+	    }
+	}
+	cairo_surface_destroy (free_me);
+    } else {
+	*bounded =  _cairo_surface_get_extents (source, extents);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_pdf_surface_add_source_surface:
+ * @surface: [in] the pdf surface
+ * @source_surface: [in] A #cairo_surface_t to use as the source surface
+ * @source_pattern: [in] A #cairo_pattern_t of type SURFACE or RASTER_SOURCE to use as the source
+ * @op: [in] the operator used to composite this source
+ * @filter: [in] filter type of the source pattern
+ * @stencil_mask: [in] if true, the surface will be written to the PDF as an /ImageMask
+ * @smask: [in] if true, only the alpha channel will be written (images only)
+ * @need_transp_group: [in] if true and an XObject is used, make it a Transparency group
+ * @extents: [in] extents of the operation that is using this source
+ * @smask_res: [in] if not NULL, the image written will specify this resource as the smask for
+ * the image (images only)
+ * @pdf_source: [out] return pdf_source_surface entry in hash table
+ * @x_offset: [out] if not NULL return x offset of surface
+ * @y_offset: [out] if not NULL return y offset of surface
+ * @source_extents: [out] if not NULL return operation extents in source space
+ *
+ * Add surface or raster_source pattern to list of surfaces to be
+ * written to the PDF file when the current page is finished. Returns
+ * a PDF resource to reference the surface. A hash table of all
+ * surfaces in the PDF file (keyed by CAIRO_MIME_TYPE_UNIQUE_ID or
+ * surface unique_id) is used to ensure surfaces with the same id are
+ * only written once to the PDF file.
+ *
+ * Only one of @source_pattern or @source_surface is to be
+ * specified. Set the other to NULL.
+ **/
+static cairo_int_status_t
+_cairo_pdf_surface_add_source_surface (cairo_pdf_surface_t	         *surface,
+				       cairo_surface_t	                 *source_surface,
+				       const cairo_pattern_t	         *source_pattern,
+				       cairo_operator_t                   op,
+				       cairo_filter_t		          filter,
+				       cairo_bool_t                       stencil_mask,
+				       cairo_bool_t                       smask,
+				       cairo_bool_t                       need_transp_group,
+				       const cairo_rectangle_int_t       *extents,
+				       cairo_pdf_resource_t	         *smask_res,
+				       cairo_pdf_source_surface_entry_t **pdf_source,
+				       double                            *x_offset,
+				       double                            *y_offset,
+				       cairo_rectangle_int_t             *source_extents)
+{
+    cairo_pdf_source_surface_t src_surface;
+    cairo_pdf_source_surface_entry_t surface_key;
+    cairo_pdf_source_surface_entry_t *surface_entry;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_bool_t interpolate;
+    unsigned char *unique_id = NULL;
+    unsigned long unique_id_length = 0;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_box_t box;
+    cairo_rectangle_int_t op_extents;
+    double x, y;
+    cairo_bool_t subsurface;
+
+    switch (filter) {
+    default:
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BEST:
+    case CAIRO_FILTER_BILINEAR:
+	interpolate = TRUE;
+	break;
+    case CAIRO_FILTER_FAST:
+    case CAIRO_FILTER_NEAREST:
+    case CAIRO_FILTER_GAUSSIAN:
+	interpolate = FALSE;
+	break;
+    }
+
+    x = 0;
+    y = 0;
+    if (source_pattern) {
+	if (source_pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
+	    status = _cairo_pdf_surface_acquire_source_image_from_pattern (surface, source_pattern,
+									   &image, &image_extra);
+	    if (unlikely (status))
+		return status;
+	    source_surface = &image->base;
+	    cairo_surface_get_device_offset (source_surface, &x, &y);
+	} else {
+	    cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) source_pattern;
+	    source_surface = surface_pattern->surface;
+	}
+    }
+    if (x_offset)
+	*x_offset = x;
+    if (y_offset)
+	*y_offset = y;
+
+    /* transform operation extents to pattern space */
+    op_extents = *extents;
+    if (source_pattern)
+    {
+	_cairo_box_from_rectangle (&box, extents);
+	_cairo_matrix_transform_bounding_box_fixed (&source_pattern->matrix, &box, NULL);
+	_cairo_box_round_to_rectangle (&box, &op_extents);
+    }
+    if (source_extents)
+	*source_extents = op_extents;
+
+    surface_key.id  = source_surface->unique_id;
+    surface_key.interpolate = interpolate;
+    cairo_surface_get_mime_data (source_surface, CAIRO_MIME_TYPE_UNIQUE_ID,
+				 (const unsigned char **) &surface_key.unique_id,
+				 &surface_key.unique_id_length);
+    _cairo_pdf_source_surface_init_key (&surface_key);
+    surface_entry = _cairo_hash_table_lookup (surface->all_surfaces, &surface_key.base);
+    if (surface_entry) {
+	if (pdf_source)
+	    *pdf_source = surface_entry;
+
+	if (source_pattern && source_pattern->extend != CAIRO_EXTEND_NONE)
+	    _cairo_unbounded_rectangle_init (&op_extents);
+
+	_cairo_rectangle_intersect (&op_extents, &surface_entry->extents);
+	_cairo_rectangle_union (&surface_entry->required_extents, &op_extents);
+	status = CAIRO_STATUS_SUCCESS;
+    }
+
+    if (status || surface_entry) {
+	if (source_pattern && source_pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	    _cairo_pdf_surface_release_source_image_from_pattern (surface, source_pattern, image, image_extra);
+	return status;
+    }
+
+    if (surface_key.unique_id && surface_key.unique_id_length > 0) {
+	unique_id = _cairo_malloc (surface_key.unique_id_length);
+	if (unique_id == NULL) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail1;
+	}
+
+	unique_id_length = surface_key.unique_id_length;
+	    memcpy (unique_id, surface_key.unique_id, unique_id_length);
+    } else {
+	unique_id = NULL;
+	unique_id_length = 0;
+    }
+
+    surface_entry = _cairo_malloc (sizeof (cairo_pdf_source_surface_entry_t));
+    if (surface_entry == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail1;
+    }
+
+    if (pdf_source)
+	*pdf_source = surface_entry;
+    surface_entry->id = surface_key.id;
+    surface_entry->operator = op;
+    surface_entry->interpolate = interpolate;
+    surface_entry->stencil_mask = stencil_mask;
+    surface_entry->smask = smask;
+    surface_entry->need_transp_group = need_transp_group;
+    surface_entry->unique_id_length = unique_id_length;
+    surface_entry->unique_id = unique_id;
+    if (smask_res)
+	surface_entry->smask_res = *smask_res;
+    else
+	surface_entry->smask_res.id = 0;
+
+    status = _get_source_surface_extents (source_surface,
+					  &surface_entry->extents,
+					  &surface_entry->bounded,
+					  &subsurface);
+    if (unlikely (status))
+	goto fail2;
+
+    if (subsurface) {
+	*x_offset = -surface_entry->extents.x;
+	*y_offset = -surface_entry->extents.y;
+    }
+
+    if (source_pattern && source_pattern->extend != CAIRO_EXTEND_NONE)
+	_cairo_unbounded_rectangle_init (&op_extents);
+
+    _cairo_rectangle_intersect (&op_extents, &surface_entry->extents);
+    surface_entry->required_extents = op_extents;
+
+    _cairo_pdf_source_surface_init_key (surface_entry);
+
+    src_surface.hash_entry = surface_entry;
+    if (source_pattern && source_pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
+	src_surface.type = CAIRO_PATTERN_TYPE_RASTER_SOURCE;
+	src_surface.surface = NULL;
+	status = _cairo_pattern_create_copy (&src_surface.raster_pattern, source_pattern);
+	if (unlikely (status))
+	    goto fail2;
+
+    } else {
+	src_surface.type = CAIRO_PATTERN_TYPE_SURFACE;
+	src_surface.surface = cairo_surface_reference (source_surface);
+	src_surface.raster_pattern = NULL;
+    }
+
+    surface_entry->surface_res = _cairo_pdf_surface_new_object (surface);
+    if (surface_entry->surface_res.id == 0) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail3;
+    }
+
+    /* Test if surface will be emitted as image or recording */
+    status = _cairo_pdf_surface_emit_surface (surface, &src_surface, TRUE, &surface_entry->emit_image);
+    if (unlikely (status))
+	goto fail3;
+
+    if (surface_entry->bounded) {
+	status = _cairo_array_append (&surface->page_surfaces, &src_surface);
+	if (unlikely (status))
+	    goto fail3;
+    } else {
+	status = _cairo_array_append (&surface->doc_surfaces, &src_surface);
+	if (unlikely (status))
+	    goto fail3;
+    }
+
+    status = _cairo_hash_table_insert (surface->all_surfaces,
+				       &surface_entry->base);
+    if (unlikely(status))
+	goto fail3;
+
+    if (source_pattern && source_pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	_cairo_pdf_surface_release_source_image_from_pattern (surface, source_pattern, image, image_extra);
+
+    return CAIRO_STATUS_SUCCESS;
+
+fail3:
+    if (source_pattern && source_pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	cairo_pattern_destroy (src_surface.raster_pattern);
+    else
+	cairo_surface_destroy (src_surface.surface);
+
+fail2:
+    free (surface_entry);
+
+fail1:
+    if (unique_id)
+	free (unique_id);
+
+    if (source_pattern && source_pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	_cairo_pdf_surface_release_source_image_from_pattern (surface, source_pattern, image, image_extra);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_pdf_pattern_or_shading (cairo_pdf_surface_t	   *surface,
+					       const cairo_pattern_t	   *pattern,
+					       cairo_operator_t	            op,
+					       const cairo_rectangle_int_t *extents,
+					       cairo_bool_t                 is_shading,
+					       cairo_pdf_resource_t	   *pattern_res,
+					       cairo_pdf_resource_t	   *gstate_res)
+{
+    cairo_pdf_pattern_t pdf_pattern;
+    cairo_int_status_t status;
+
+    pdf_pattern.is_shading = is_shading;
+    pdf_pattern.operator = op;
+
+    /* Solid colors are emitted into the content stream */
+    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
+	pattern_res->id = 0;
+	gstate_res->id = 0;
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    status = _cairo_pattern_create_copy (&pdf_pattern.pattern, pattern);
+    if (unlikely (status))
+	return status;
+
+    pdf_pattern.pattern_res = _cairo_pdf_surface_new_object (surface);
+    if (pdf_pattern.pattern_res.id == 0) {
+	cairo_pattern_destroy (pdf_pattern.pattern);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pdf_pattern.gstate_res.id = 0;
+
+    /* gradient patterns require an smask object to implement transparency */
+    if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR ||
+	pattern->type == CAIRO_PATTERN_TYPE_RADIAL ||
+	pattern->type == CAIRO_PATTERN_TYPE_MESH)
+    {
+	double min_alpha;
+
+	_cairo_pattern_alpha_range (pattern, &min_alpha, NULL);
+	if (! CAIRO_ALPHA_IS_OPAQUE (min_alpha)) {
+            pdf_pattern.gstate_res = _cairo_pdf_surface_new_object (surface);
+	    if (pdf_pattern.gstate_res.id == 0) {
+		cairo_pattern_destroy (pdf_pattern.pattern);
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+        }
+    }
+
+    pdf_pattern.width  = surface->width;
+    pdf_pattern.height = surface->height;
+    if (extents != NULL) {
+	pdf_pattern.extents = *extents;
+    } else {
+	pdf_pattern.extents.x = 0;
+	pdf_pattern.extents.y = 0;
+	pdf_pattern.extents.width  = surface->width;
+	pdf_pattern.extents.height = surface->height;
+    }
+
+    *pattern_res = pdf_pattern.pattern_res;
+    *gstate_res = pdf_pattern.gstate_res;
+    /* If the pattern requires a gstate it will be drawn from within
+     * an XObject. The initial space of each XObject has an inverted
+     * Y-axis. */
+    pdf_pattern.inverted_y_axis = pdf_pattern.gstate_res.id ? TRUE : surface->in_xobject;
+
+    status = _cairo_array_append (&surface->page_patterns, &pdf_pattern);
+    if (unlikely (status)) {
+	cairo_pattern_destroy (pdf_pattern.pattern);
+	return status;
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+/* Get BBox from extents */
+static void
+_get_bbox_from_extents (const cairo_rectangle_int_t  *extents,
+			cairo_box_double_t           *bbox)
+{
+    bbox->p1.x = extents->x;
+    bbox->p1.y = extents->y;
+    bbox->p2.x = extents->x + extents->width;
+    bbox->p2.y = extents->y + extents->height;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_pdf_shading (cairo_pdf_surface_t		*surface,
+				    const cairo_pattern_t	*pattern,
+				    cairo_operator_t	         op,
+				    const cairo_rectangle_int_t	*extents,
+				    cairo_pdf_resource_t	*shading_res,
+				    cairo_pdf_resource_t	*gstate_res)
+{
+    return _cairo_pdf_surface_add_pdf_pattern_or_shading (surface,
+							  pattern,
+							  op,
+							  extents,
+							  TRUE,
+							  shading_res,
+							  gstate_res);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_pdf_pattern (cairo_pdf_surface_t		*surface,
+				    const cairo_pattern_t	*pattern,
+				    cairo_operator_t	         op,
+				    const cairo_rectangle_int_t	*extents,
+				    cairo_pdf_resource_t	*pattern_res,
+				    cairo_pdf_resource_t	*gstate_res)
+{
+    return _cairo_pdf_surface_add_pdf_pattern_or_shading (surface,
+							  pattern,
+							  op,
+							  extents,
+							  FALSE,
+							  pattern_res,
+							  gstate_res);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_open_stream (cairo_pdf_surface_t	*surface,
+				cairo_pdf_resource_t    *resource,
+				cairo_bool_t             compressed,
+				const char		*fmt,
+				...)
+{
+    va_list ap;
+    cairo_pdf_resource_t self, length;
+    cairo_output_stream_t *output = NULL;
+
+    if (resource) {
+	self = *resource;
+	_cairo_pdf_surface_update_object (surface, self);
+    } else {
+	self = _cairo_pdf_surface_new_object (surface);
+	if (self.id == 0)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    length = _cairo_pdf_surface_new_object (surface);
+    if (length.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (compressed) {
+	output = _cairo_deflate_stream_create (surface->output);
+	if (_cairo_output_stream_get_status (output))
+	    return _cairo_output_stream_destroy (output);
+    }
+
+    surface->pdf_stream.active = TRUE;
+    surface->pdf_stream.self = self;
+    surface->pdf_stream.length = length;
+    surface->pdf_stream.compressed = compressed;
+    surface->current_pattern_is_solid_color = FALSE;
+    surface->current_operator = CAIRO_OPERATOR_OVER;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Length %d 0 R\n",
+				 surface->pdf_stream.self.id,
+				 surface->pdf_stream.length.id);
+    if (compressed)
+	_cairo_output_stream_printf (surface->output,
+				     "   /Filter /FlateDecode\n");
+
+    if (fmt != NULL) {
+	va_start (ap, fmt);
+	_cairo_output_stream_vprintf (surface->output, fmt, ap);
+	va_end (ap);
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "stream\n");
+
+    surface->pdf_stream.start_offset = _cairo_output_stream_get_position (surface->output);
+
+    if (compressed) {
+	assert (surface->pdf_stream.old_output == NULL);
+        surface->pdf_stream.old_output = surface->output;
+        surface->output = output;
+	_cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->output);
+    }
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_close_stream (cairo_pdf_surface_t *surface)
+{
+    cairo_int_status_t status;
+    long length;
+
+    if (! surface->pdf_stream.active)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+
+    if (surface->pdf_stream.compressed) {
+	cairo_int_status_t status2;
+
+	status2 = _cairo_output_stream_destroy (surface->output);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = status2;
+
+	surface->output = surface->pdf_stream.old_output;
+	_cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->output);
+	surface->pdf_stream.old_output = NULL;
+    }
+
+    length = _cairo_output_stream_get_position (surface->output) -
+	surface->pdf_stream.start_offset;
+    _cairo_output_stream_printf (surface->output,
+				 "\n"
+				 "endstream\n"
+				 "endobj\n");
+
+    _cairo_pdf_surface_update_object (surface,
+				      surface->pdf_stream.length);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "   %ld\n"
+				 "endobj\n",
+				 surface->pdf_stream.length.id,
+				 length);
+
+    surface->pdf_stream.active = FALSE;
+
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = _cairo_output_stream_get_status (surface->output);
+
+    return status;
+}
+
+static void
+_cairo_pdf_surface_write_memory_stream (cairo_pdf_surface_t         *surface,
+					cairo_output_stream_t       *mem_stream,
+					cairo_pdf_resource_t         resource,
+					cairo_pdf_group_resources_t *resources,
+					cairo_bool_t                 is_knockout_group,
+					const cairo_box_double_t    *bbox)
+{
+    _cairo_pdf_surface_update_object (surface, resource);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /XObject\n"
+				 "   /Length %d\n",
+				 resource.id,
+				 _cairo_memory_stream_length (mem_stream));
+
+    if (surface->compress_content) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Filter /FlateDecode\n");
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Subtype /Form\n"
+				 "   /BBox [ %f %f %f %f ]\n"
+				 "   /Group <<\n"
+				 "      /Type /Group\n"
+				 "      /S /Transparency\n"
+				 "      /I true\n"
+				 "      /CS /DeviceRGB\n",
+				 bbox->p1.x, bbox->p1.y, bbox->p2.x, bbox->p2.y);
+
+    if (is_knockout_group)
+        _cairo_output_stream_printf (surface->output,
+                                     "      /K true\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 "   >>\n"
+				 "   /Resources\n");
+    _cairo_pdf_surface_emit_group_resources (surface, resources);
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "stream\n");
+    _cairo_memory_stream_copy (mem_stream, surface->output);
+    _cairo_output_stream_printf (surface->output,
+				 "endstream\n"
+				 "endobj\n");
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_open_group (cairo_pdf_surface_t         *surface,
+			       const cairo_box_double_t    *bbox,
+			       cairo_pdf_resource_t        *resource)
+{
+    cairo_int_status_t status;
+
+    assert (surface->pdf_stream.active == FALSE);
+    assert (surface->group_stream.active == FALSE);
+
+    surface->group_stream.active = TRUE;
+    surface->current_pattern_is_solid_color = FALSE;
+    surface->current_operator = CAIRO_OPERATOR_OVER;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+
+    surface->group_stream.mem_stream = _cairo_memory_stream_create ();
+
+    if (surface->compress_content) {
+	surface->group_stream.stream =
+	    _cairo_deflate_stream_create (surface->group_stream.mem_stream);
+    } else {
+	surface->group_stream.stream = surface->group_stream.mem_stream;
+    }
+    status = _cairo_output_stream_get_status (surface->group_stream.stream);
+
+    surface->group_stream.old_output = surface->output;
+    surface->output = surface->group_stream.stream;
+    _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->output);
+    _cairo_pdf_group_resources_clear (&surface->resources);
+
+    if (resource) {
+	surface->group_stream.resource = *resource;
+    } else {
+	surface->group_stream.resource = _cairo_pdf_surface_new_object (surface);
+	if (surface->group_stream.resource.id == 0)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+    surface->group_stream.is_knockout = FALSE;
+    surface->group_stream.bbox = *bbox;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_open_knockout_group (cairo_pdf_surface_t         *surface,
+					const cairo_box_double_t    *bbox)
+{
+    cairo_int_status_t status;
+
+    status = _cairo_pdf_surface_open_group (surface, bbox, NULL);
+    if (unlikely (status))
+	return status;
+
+    surface->group_stream.is_knockout = TRUE;
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_close_group (cairo_pdf_surface_t *surface,
+				cairo_pdf_resource_t *group)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS, status2;
+
+    assert (surface->pdf_stream.active == FALSE);
+    assert (surface->group_stream.active == TRUE);
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    if (surface->compress_content) {
+	status = _cairo_output_stream_destroy (surface->group_stream.stream);
+	surface->group_stream.stream = NULL;
+
+	_cairo_output_stream_printf (surface->group_stream.mem_stream,
+				     "\n");
+    }
+    surface->output = surface->group_stream.old_output;
+    _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->output);
+    surface->group_stream.active = FALSE;
+    _cairo_pdf_surface_write_memory_stream (surface,
+					    surface->group_stream.mem_stream,
+					    surface->group_stream.resource,
+					    &surface->resources,
+					    surface->group_stream.is_knockout,
+					    &surface->group_stream.bbox);
+    if (group)
+	*group = surface->group_stream.resource;
+
+    status2 = _cairo_output_stream_destroy (surface->group_stream.mem_stream);
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	status = status2;
+
+    surface->group_stream.mem_stream = NULL;
+    surface->group_stream.stream = NULL;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_open_content_stream (cairo_pdf_surface_t       *surface,
+					const cairo_box_double_t  *bbox,
+					cairo_pdf_resource_t      *resource,
+					cairo_bool_t               is_form,
+					cairo_bool_t               is_group)
+{
+    cairo_int_status_t status;
+
+    assert (surface->pdf_stream.active == FALSE);
+    assert (surface->group_stream.active == FALSE);
+
+    surface->content_resources = _cairo_pdf_surface_new_object (surface);
+    if (surface->content_resources.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (is_form) {
+	assert (bbox != NULL);
+
+	if (is_group) {
+	    status =
+		_cairo_pdf_surface_open_stream (surface,
+						resource,
+						surface->compress_content,
+						"   /Type /XObject\n"
+						"   /Subtype /Form\n"
+						"   /BBox [ %f %f %f %f ]\n"
+						"   /Group <<\n"
+						"      /Type /Group\n"
+						"      /S /Transparency\n"
+						"      /I true\n"
+						"      /CS /DeviceRGB\n"
+						"   >>\n"
+						"   /Resources %d 0 R\n",
+						bbox->p1.x,
+						bbox->p1.y,
+						bbox->p2.x,
+						bbox->p2.y,
+						surface->content_resources.id);
+	} else {
+	    status =
+		_cairo_pdf_surface_open_stream (surface,
+						resource,
+						surface->compress_content,
+						"   /Type /XObject\n"
+						"   /Subtype /Form\n"
+						"   /BBox [ %f %f %f %f ]\n"
+						"   /Resources %d 0 R\n",
+						bbox->p1.x,
+						bbox->p1.y,
+						bbox->p2.x,
+						bbox->p2.y,
+						surface->content_resources.id);
+	}
+    } else {
+	status =
+	    _cairo_pdf_surface_open_stream (surface,
+					    resource,
+					    surface->compress_content,
+					    NULL);
+	_cairo_output_stream_printf (surface->output,
+				     "1 0 0 -1 0 %f cm\n",
+				     surface->height);
+    }
+    if (unlikely (status))
+	return status;
+
+    surface->content = surface->pdf_stream.self;
+
+    _cairo_output_stream_printf (surface->output, "q\n");
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_close_content_stream (cairo_pdf_surface_t *surface)
+{
+    cairo_int_status_t status;
+
+    assert (surface->pdf_stream.active == TRUE);
+    assert (surface->group_stream.active == FALSE);
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output, "Q\n");
+    status = _cairo_pdf_surface_close_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_pdf_surface_update_object (surface, surface->content_resources);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n",
+				 surface->content_resources.id);
+    _cairo_pdf_surface_emit_group_resources (surface, &surface->resources);
+    _cairo_output_stream_printf (surface->output,
+				 "endobj\n");
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static void
+_cairo_pdf_source_surface_entry_pluck (void *entry, void *closure)
+{
+    cairo_pdf_source_surface_entry_t *surface_entry = entry;
+    cairo_hash_table_t *patterns = closure;
+
+    _cairo_hash_table_remove (patterns, &surface_entry->base);
+    free (surface_entry->unique_id);
+
+    free (surface_entry);
+}
+
+static cairo_status_t
+_cairo_pdf_surface_finish (void *abstract_surface)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    long offset;
+    cairo_pdf_resource_t catalog;
+    cairo_status_t status, status2;
+    int size, i;
+    cairo_pdf_jbig2_global_t *global;
+    char *label;
+
+    _cairo_pdf_surface_clear (surface);
+
+    /* Emit unbounded surfaces */
+    _cairo_pdf_surface_write_patterns_and_smask_groups (surface, TRUE);
+
+    status = surface->base.status;
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = _cairo_pdf_surface_emit_font_subsets (surface);
+
+    _cairo_pdf_surface_write_pages (surface);
+
+    status = _cairo_pdf_interchange_write_document_objects (surface);
+    if (unlikely (status))
+	return status;
+
+    catalog = _cairo_pdf_surface_write_catalog (surface);
+    if (catalog.id == 0 && status == CAIRO_STATUS_SUCCESS)
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    offset = _cairo_pdf_surface_write_xref (surface);
+
+    _cairo_output_stream_printf (surface->output,
+				 "trailer\n"
+				 "<< /Size %d\n"
+				 "   /Root %d 0 R\n"
+				 "   /Info %d 0 R\n"
+				 ">>\n",
+				 surface->next_available_resource.id,
+				 catalog.id,
+				 surface->docinfo_res.id);
+
+    _cairo_output_stream_printf (surface->output,
+				 "startxref\n"
+				 "%ld\n"
+				 "%%%%EOF\n",
+				 offset);
+
+    /* pdf_operators has already been flushed when the last stream was
+     * closed so we should never be writing anything here - however,
+     * the stream may itself be in an error state. */
+    status2 = _cairo_pdf_operators_fini (&surface->pdf_operators);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    /* close any active streams still open due to fatal errors */
+    status2 = _cairo_pdf_surface_close_stream (surface);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    if (surface->group_stream.stream != NULL) {
+	status2 = _cairo_output_stream_destroy (surface->group_stream.stream);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = status2;
+    }
+    if (surface->group_stream.mem_stream != NULL) {
+	status2 = _cairo_output_stream_destroy (surface->group_stream.mem_stream);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = status2;
+    }
+    if (surface->pdf_stream.active)
+	surface->output = surface->pdf_stream.old_output;
+    if (surface->group_stream.active)
+	surface->output = surface->group_stream.old_output;
+
+    /* and finish the pdf surface */
+    status2 = _cairo_output_stream_destroy (surface->output);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    _cairo_pdf_group_resources_fini (&surface->resources);
+
+    _cairo_array_fini (&surface->objects);
+    _cairo_array_fini (&surface->pages);
+    _cairo_array_fini (&surface->rgb_linear_functions);
+    _cairo_array_fini (&surface->alpha_linear_functions);
+    _cairo_array_fini (&surface->page_patterns);
+    _cairo_array_fini (&surface->page_surfaces);
+    _cairo_array_fini (&surface->doc_surfaces);
+    _cairo_hash_table_foreach (surface->all_surfaces,
+			       _cairo_pdf_source_surface_entry_pluck,
+			       surface->all_surfaces);
+    _cairo_hash_table_destroy (surface->all_surfaces);
+    _cairo_array_fini (&surface->smask_groups);
+    _cairo_array_fini (&surface->fonts);
+    _cairo_array_fini (&surface->knockout_group);
+    _cairo_array_fini (&surface->page_annots);
+
+    if (surface->font_subsets) {
+	_cairo_scaled_font_subsets_destroy (surface->font_subsets);
+	surface->font_subsets = NULL;
+    }
+
+    size = _cairo_array_num_elements (&surface->jbig2_global);
+    for (i = 0; i < size; i++) {
+	global = (cairo_pdf_jbig2_global_t *) _cairo_array_index (&surface->jbig2_global, i);
+	free(global->id);
+	if (!global->emitted)
+	    return _cairo_error (CAIRO_STATUS_JBIG2_GLOBAL_MISSING);
+    }
+    _cairo_array_fini (&surface->jbig2_global);
+    _cairo_array_fini (&surface->page_heights);
+
+    size = _cairo_array_num_elements (&surface->page_labels);
+    for (i = 0; i < size; i++) {
+	_cairo_array_copy_element (&surface->page_labels, i, &label);
+	free (label);
+    }
+    _cairo_array_fini (&surface->page_labels);
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    return _cairo_pdf_interchange_fini (surface);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_start_page (void *abstract_surface)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_pdf_resource_t page;
+    cairo_int_status_t status;
+
+    /* Document header */
+    if (! surface->header_emitted) {
+	const char *version;
+
+	switch (surface->pdf_version) {
+	case CAIRO_PDF_VERSION_1_4:
+	    version = "1.4";
+	    break;
+	default:
+	case CAIRO_PDF_VERSION_1_5:
+	    version = "1.5";
+	    break;
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     "%%PDF-%s\n", version);
+	_cairo_output_stream_printf (surface->output,
+				     "%%%c%c%c%c\n", 181, 237, 174, 251);
+	surface->header_emitted = TRUE;
+    }
+
+    _cairo_pdf_group_resources_clear (&surface->resources);
+    surface->in_xobject = FALSE;
+
+    page = _cairo_pdf_surface_new_object (surface);
+    if (page.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_array_append (&surface->pages, &page);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_has_fallback_images (void		*abstract_surface,
+					cairo_bool_t	 has_fallbacks)
+{
+    cairo_int_status_t status;
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_box_double_t bbox;
+
+    surface->has_fallback_images = has_fallbacks;
+    surface->in_xobject = has_fallbacks;
+    bbox.p1.x = 0;
+    bbox.p1.y = 0;
+    bbox.p2.x = surface->width;
+    bbox.p2.y = surface->height;
+    status = _cairo_pdf_surface_open_content_stream (surface, &bbox, NULL, has_fallbacks, has_fallbacks);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_pdf_surface_supports_fine_grained_fallbacks (void *abstract_surface)
+{
+    return TRUE;
+}
+
+static cairo_bool_t
+_cairo_pdf_surface_requires_thumbnail_image (void *abstract_surface,
+					     int  *width,
+					     int  *height)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+
+    if (surface->thumbnail_width > 0 && surface->thumbnail_height > 0) {
+	*width = surface->thumbnail_width;
+	*height = surface->thumbnail_height;
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_set_thumbnail_image (void                  *abstract_surface,
+					cairo_image_surface_t *image)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+
+    surface->thumbnail_image = 	(cairo_image_surface_t *)cairo_surface_reference(&image->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_add_padded_image_surface (cairo_pdf_surface_t          *surface,
+					     const cairo_pattern_t        *source,
+					     const cairo_rectangle_int_t  *extents,
+					     cairo_pdf_source_surface_entry_t **pdf_source,
+					     double                       *x_offset,
+					     double                       *y_offset,
+					     cairo_rectangle_int_t        *source_extents)
+{
+    cairo_image_surface_t *image;
+    cairo_surface_t *pad_image;
+    void *image_extra;
+    cairo_int_status_t status;
+    int w, h;
+    cairo_box_t box;
+    cairo_rectangle_int_t rect;
+    cairo_surface_pattern_t pad_pattern;
+
+    status = _cairo_pdf_surface_acquire_source_image_from_pattern (surface, source,
+								   &image, &image_extra);
+    if (unlikely (status))
+        return status;
+
+    pad_image = &image->base;
+
+    /* get the operation extents in pattern space */
+    _cairo_box_from_rectangle (&box, extents);
+    _cairo_matrix_transform_bounding_box_fixed (&source->matrix, &box, NULL);
+    _cairo_box_round_to_rectangle (&box, &rect);
+
+    /* Check if image needs padding to fill extents */
+    w = image->width;
+    h = image->height;
+    if (_cairo_fixed_integer_ceil(box.p1.x) < 0 ||
+	_cairo_fixed_integer_ceil(box.p1.y) < 0 ||
+	_cairo_fixed_integer_floor(box.p2.x) > w ||
+	_cairo_fixed_integer_floor(box.p2.y) > h)
+    {
+	pad_image = _cairo_image_surface_create_with_content (image->base.content,
+							      rect.width,
+							      rect.height);
+	if (pad_image->status) {
+	    status = pad_image->status;
+	    goto BAIL;
+	}
+
+	_cairo_pattern_init_for_surface (&pad_pattern, &image->base);
+	cairo_matrix_init_translate (&pad_pattern.base.matrix, rect.x, rect.y);
+	pad_pattern.base.extend = CAIRO_EXTEND_PAD;
+	status = _cairo_surface_paint (pad_image,
+				       CAIRO_OPERATOR_SOURCE, &pad_pattern.base,
+				       NULL);
+        _cairo_pattern_fini (&pad_pattern.base);
+        if (unlikely (status))
+            goto BAIL;
+    }
+
+    status = _cairo_pdf_surface_add_source_surface (surface,
+						    pad_image,
+						    NULL,
+						    CAIRO_OPERATOR_OVER, /* not used for images */
+						    source->filter,
+						    FALSE, /* stencil mask */
+						    FALSE, /* smask */
+						    FALSE, /* need_transp_group */
+						    extents,
+						    NULL, /* smask_res */
+						    pdf_source,
+						    x_offset,
+						    y_offset,
+						    source_extents);
+    if (unlikely (status))
+        goto BAIL;
+
+    if (pad_image != &image->base) {
+	/* If using a padded image, replace _add_source_surface
+	 * x/y_offset with padded image offset. Note:
+	 * _add_source_surface only sets a non zero x/y_offset for
+	 * RASTER_SOURCE patterns. _add_source_surface will always set
+	 * x/y_offset to 0 for surfaces so we can ignore the returned
+	 * offset and replace it with the offset required for the
+	 * padded image */
+	*x_offset = rect.x;
+	*y_offset = rect.y;
+    }
+
+BAIL:
+    if (pad_image != &image->base)
+        cairo_surface_destroy (pad_image);
+
+    _cairo_pdf_surface_release_source_image_from_pattern (surface, source, image, image_extra);
+
+    return status;
+}
+
+/* Emit alpha channel from the image into stream_res.
+ */
+static cairo_int_status_t
+_cairo_pdf_surface_emit_smask (cairo_pdf_surface_t	*surface,
+			       cairo_image_surface_t	*image,
+			       cairo_bool_t              stencil_mask,
+			       cairo_bool_t              interpolate,
+			       cairo_pdf_resource_t	*stream_res)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    char *alpha;
+    unsigned long alpha_size;
+    uint32_t *pixel32;
+    uint8_t *pixel8;
+    int i, x, y, bit, a;
+    cairo_image_transparency_t transparency;
+
+    /* This is the only image format we support, which simplifies things. */
+    assert (image->format == CAIRO_FORMAT_ARGB32 ||
+	    image->format == CAIRO_FORMAT_RGB24 ||
+	    image->format == CAIRO_FORMAT_A8 ||
+	    image->format == CAIRO_FORMAT_A1 );
+
+    transparency = _cairo_image_analyze_transparency (image);
+    if (stencil_mask) {
+	assert (transparency == CAIRO_IMAGE_IS_OPAQUE ||
+		transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA);
+    } else {
+	assert (transparency != CAIRO_IMAGE_IS_OPAQUE);
+    }
+
+    if (transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA || transparency == CAIRO_IMAGE_IS_OPAQUE) {
+	alpha_size = (image->width + 7) / 8 * image->height;
+	alpha = _cairo_malloc_ab ((image->width+7) / 8, image->height);
+    } else {
+	alpha_size = image->height * image->width;
+	alpha = _cairo_malloc_ab (image->height, image->width);
+    }
+
+    if (unlikely (alpha == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP;
+    }
+
+    i = 0;
+    for (y = 0; y < image->height; y++) {
+	if (transparency == CAIRO_IMAGE_IS_OPAQUE) {
+	    for (x = 0; x < (image->width + 7) / 8; x++)
+		alpha[i++] = 0xff;
+	} else if (image->format == CAIRO_FORMAT_A1) {
+	    pixel8 = (uint8_t *) (image->data + y * image->stride);
+
+	    for (x = 0; x < (image->width + 7) / 8; x++, pixel8++) {
+		a = *pixel8;
+		a = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (a);
+		alpha[i++] = a;
+	    }
+	} else {
+	    pixel8 = (uint8_t *) (image->data + y * image->stride);
+	    pixel32 = (uint32_t *) (image->data + y * image->stride);
+	    bit = 7;
+	    for (x = 0; x < image->width; x++) {
+		if (image->format == CAIRO_FORMAT_ARGB32) {
+		    a = (*pixel32 & 0xff000000) >> 24;
+		    pixel32++;
+		} else {
+		    a = *pixel8;
+		    pixel8++;
+		}
+
+		if (transparency == CAIRO_IMAGE_HAS_ALPHA) {
+		    alpha[i++] = a;
+		} else { /* transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA or CAIRO_IMAGE_IS_OPAQUE */
+		    if (bit == 7)
+			alpha[i] = 0;
+		    if (a != 0)
+			alpha[i] |= (1 << bit);
+		    bit--;
+		    if (bit < 0) {
+			bit = 7;
+			i++;
+		    }
+		}
+	    }
+	    if (bit != 7)
+		i++;
+	}
+    }
+
+    if (stencil_mask) {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 stream_res,
+						 TRUE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /ImageMask true\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Decode [1 0]\n",
+						 image->width, image->height,
+						 interpolate ? "true" : "false");
+    } else {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 stream_res,
+						 TRUE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /ColorSpace /DeviceGray\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent %d\n",
+						 image->width, image->height,
+						 interpolate ? "true" : "false",
+						 transparency == CAIRO_IMAGE_HAS_ALPHA ? 8 : 1);
+    }
+    if (unlikely (status))
+	goto CLEANUP_ALPHA;
+
+    _cairo_output_stream_write (surface->output, alpha, alpha_size);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+ CLEANUP_ALPHA:
+    free (alpha);
+ CLEANUP:
+    return status;
+}
+
+/**
+ * _cairo_pdf_surface_emit_image:
+ * @surface: the pdf surface
+ * @image_surf: The image to write
+ * @surface_entry: Contains image resource, smask resource, interpolate and stencil mask parameters.
+ *
+ * Emit an image stream using the @image_res resource and write out
+ * the image data from @image_surf. If @smask_res is not null, @smask_res will
+ * be specified as the smask for the image. Otherwise emit the an smask if
+ * the image is requires one.
+ **/
+static cairo_int_status_t
+_cairo_pdf_surface_emit_image (cairo_pdf_surface_t              *surface,
+                               cairo_image_surface_t            *image_surf,
+			       cairo_pdf_source_surface_entry_t *surface_entry)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    char *data;
+    unsigned long data_size;
+    uint32_t *pixel;
+    int i, x, y, bit;
+    cairo_pdf_resource_t smask = {0}; /* squelch bogus compiler warning */
+    cairo_bool_t need_smask;
+    cairo_image_color_t color;
+    cairo_image_surface_t *image;
+    cairo_image_transparency_t transparency;
+    char smask_buf[30];
+
+    image  = image_surf;
+    if (image->format != CAIRO_FORMAT_RGB24 &&
+	image->format != CAIRO_FORMAT_ARGB32 &&
+	image->format != CAIRO_FORMAT_A8 &&
+	image->format != CAIRO_FORMAT_A1)
+    {
+	cairo_surface_t *surf;
+	cairo_surface_pattern_t pattern;
+
+	surf = _cairo_image_surface_create_with_content (image_surf->base.content,
+							 image_surf->width,
+							 image_surf->height);
+	image = (cairo_image_surface_t *) surf;
+	if (surf->status) {
+	    status = surf->status;
+	    goto CLEANUP;
+	}
+
+	_cairo_pattern_init_for_surface (&pattern, &image_surf->base);
+	status = _cairo_surface_paint (surf,
+				       CAIRO_OPERATOR_SOURCE, &pattern.base,
+				       NULL);
+        _cairo_pattern_fini (&pattern.base);
+        if (unlikely (status))
+            goto CLEANUP;
+    }
+
+    if (surface_entry->smask || surface_entry->stencil_mask) {
+	return _cairo_pdf_surface_emit_smask (surface, image,
+					      surface_entry->stencil_mask,
+					      surface_entry->interpolate,
+					      &surface_entry->surface_res);
+    }
+
+    color = _cairo_image_analyze_color (image);
+    switch (color) {
+        default:
+	case CAIRO_IMAGE_UNKNOWN_COLOR:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_IMAGE_IS_COLOR:
+	    data_size = image->height * image->width * 3;
+	    data = _cairo_malloc_abc (image->width, image->height, 3);
+	    break;
+
+	case CAIRO_IMAGE_IS_GRAYSCALE:
+	    data_size = image->height * image->width;
+	    data = _cairo_malloc_ab (image->width, image->height);
+	    break;
+	case CAIRO_IMAGE_IS_MONOCHROME:
+	    data_size = (image->width + 7) / 8 * image->height;
+	    data = _cairo_malloc_ab ((image->width+7) / 8, image->height);
+	    break;
+    }
+    if (unlikely (data == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP;
+    }
+
+    i = 0;
+    for (y = 0; y < image->height; y++) {
+	pixel = (uint32_t *) (image->data + y * image->stride);
+
+	bit = 7;
+	for (x = 0; x < image->width; x++, pixel++) {
+	    int r, g, b;
+
+	    /* XXX: We're un-premultiplying alpha here. My reading of the PDF
+	     * specification suggests that we should be able to avoid having
+	     * to do this by filling in the SMask's Matte dictionary
+	     * appropriately, but my attempts to do that so far have
+	     * failed. */
+	    if (image->format == CAIRO_FORMAT_ARGB32) {
+		uint8_t a;
+		a = (*pixel & 0xff000000) >> 24;
+		if (a == 0) {
+		    r = g = b = 0;
+		} else {
+		    r = (((*pixel & 0xff0000) >> 16) * 255 + a / 2) / a;
+		    g = (((*pixel & 0x00ff00) >>  8) * 255 + a / 2) / a;
+		    b = (((*pixel & 0x0000ff) >>  0) * 255 + a / 2) / a;
+		}
+	    } else if (image->format == CAIRO_FORMAT_RGB24) {
+		r = (*pixel & 0x00ff0000) >> 16;
+		g = (*pixel & 0x0000ff00) >>  8;
+		b = (*pixel & 0x000000ff) >>  0;
+	    } else {
+		r = g = b = 0;
+	    }
+
+	    switch (color) {
+		case CAIRO_IMAGE_IS_COLOR:
+		case CAIRO_IMAGE_UNKNOWN_COLOR:
+		    data[i++] = r;
+		    data[i++] = g;
+		    data[i++] = b;
+		    break;
+
+		case CAIRO_IMAGE_IS_GRAYSCALE:
+		    data[i++] = r;
+		    break;
+
+		case CAIRO_IMAGE_IS_MONOCHROME:
+		    if (bit == 7)
+			data[i] = 0;
+		    if (r != 0)
+			data[i] |= (1 << bit);
+		    bit--;
+		    if (bit < 0) {
+			bit = 7;
+			i++;
+		    }
+		    break;
+	    }
+	}
+	if (bit != 7)
+	    i++;
+    }
+
+    if (surface_entry->smask_res.id != 0) {
+	need_smask = TRUE;
+	smask = surface_entry->smask_res;
+    } else {
+	need_smask = FALSE;
+	if (image->format == CAIRO_FORMAT_ARGB32 ||
+	    image->format == CAIRO_FORMAT_A8 ||
+	    image->format == CAIRO_FORMAT_A1)
+	{
+	    transparency = _cairo_image_analyze_transparency (image);
+	    if (transparency != CAIRO_IMAGE_IS_OPAQUE) {
+		need_smask = TRUE;
+		smask = _cairo_pdf_surface_new_object (surface);
+		if (smask.id == 0) {
+		    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		    goto CLEANUP_RGB;
+		}
+
+		status = _cairo_pdf_surface_emit_smask (surface, image, FALSE, surface_entry->interpolate, &smask);
+		if (unlikely (status))
+		    goto CLEANUP_RGB;
+	    }
+	}
+    }
+
+    if (need_smask)
+	snprintf(smask_buf, sizeof(smask_buf), "   /SMask %d 0 R\n", smask.id);
+    else
+	smask_buf[0] = 0;
+
+    status = _cairo_pdf_surface_open_stream (surface,
+					     &surface_entry->surface_res,
+					     TRUE,
+					     "   /Type /XObject\n"
+					     "   /Subtype /Image\n"
+					     "   /Width %d\n"
+					     "   /Height %d\n"
+					     "   /ColorSpace %s\n"
+					     "   /Interpolate %s\n"
+					     "   /BitsPerComponent %d\n"
+					     "%s",
+					     image->width,
+					     image->height,
+					     color == CAIRO_IMAGE_IS_COLOR ? "/DeviceRGB" : "/DeviceGray",
+					     surface_entry->interpolate ? "true" : "false",
+					     color == CAIRO_IMAGE_IS_MONOCHROME? 1 : 8,
+					     smask_buf);
+    if (unlikely (status))
+	goto CLEANUP_RGB;
+
+#undef IMAGE_DICTIONARY
+
+    _cairo_output_stream_write (surface->output, data, data_size);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+CLEANUP_RGB:
+    free (data);
+CLEANUP:
+    if (image != image_surf)
+	cairo_surface_destroy (&image->base);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_lookup_jbig2_global (cairo_pdf_surface_t       *surface,
+					const unsigned char       *global_id,
+					unsigned long              global_id_length,
+					cairo_pdf_jbig2_global_t **entry)
+{
+    cairo_pdf_jbig2_global_t global;
+    int size, i;
+    cairo_int_status_t status;
+
+    size = _cairo_array_num_elements (&surface->jbig2_global);
+    for (i = 0; i < size; i++) {
+	*entry = (cairo_pdf_jbig2_global_t *) _cairo_array_index (&surface->jbig2_global, i);
+	if ((*entry)->id && global_id && (*entry)->id_length == global_id_length
+	    && memcmp((*entry)->id, global_id, global_id_length) == 0) {
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    global.id = _cairo_malloc (global_id_length);
+    if (unlikely (global.id == NULL)) {
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    memcpy (global.id, global_id, global_id_length);
+    global.id_length = global_id_length;
+    global.res = _cairo_pdf_surface_new_object (surface);
+    if (global.res.id == 0) {
+	free(global.id);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    global.emitted = FALSE;
+    status = _cairo_array_append (&surface->jbig2_global, &global);
+    if (unlikely(status))
+	return status;
+
+    size = _cairo_array_num_elements (&surface->jbig2_global);
+    *entry = (cairo_pdf_jbig2_global_t *) _cairo_array_index (&surface->jbig2_global, size - 1);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_jbig2_image (cairo_pdf_surface_t              *surface,
+				     cairo_surface_t	              *source,
+				     cairo_pdf_source_surface_entry_t *surface_entry,
+				     cairo_bool_t                      test)
+{
+    cairo_int_status_t status;
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_image_info_t info;
+    const unsigned char *global_id;
+    unsigned long global_id_length;
+    const unsigned char *global_data;
+    unsigned long global_data_length;
+    cairo_pdf_jbig2_global_t *global_entry = NULL; /* hide compiler warning */
+    char smask_buf[30];
+    char decode_parms_buf[100];
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jbig2_info (&info, mime_data, mime_data_length);
+    if (status)
+	return status;
+
+    /* At this point we know emitting jbig2 will succeed. */
+    if (test)
+	return CAIRO_STATUS_SUCCESS;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID,
+				 &global_id, &global_id_length);
+    if (global_id && global_id_length > 0) {
+	status = _cairo_pdf_surface_lookup_jbig2_global (surface, global_id, global_id_length, &global_entry);
+	if (unlikely(status))
+	    return status;
+
+	if (!global_entry->emitted) {
+	    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2_GLOBAL,
+					 &global_data, &global_data_length);
+	    if (global_data) {
+		status = _cairo_pdf_surface_open_stream (surface, &global_entry->res, FALSE, NULL);
+		if (unlikely(status))
+		    return status;
+
+		_cairo_output_stream_write (surface->output, global_data, global_data_length);
+		status = _cairo_pdf_surface_close_stream (surface);
+		if (unlikely(status))
+		    return status;
+
+		global_entry->emitted = TRUE;
+	    }
+	}
+
+	snprintf(decode_parms_buf, sizeof(decode_parms_buf),
+		 "   /DecodeParms << /JBIG2Globals %d 0 R >>\n", global_entry->res.id);
+    } else {
+	decode_parms_buf[0] = 0;
+    }
+
+    if (surface_entry->smask_res.id)
+	snprintf(smask_buf, sizeof(smask_buf), "   /SMask %d 0 R\n", surface_entry->smask_res.id);
+    else
+	smask_buf[0] = 0;
+
+    if (surface_entry->stencil_mask) {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /ImageMask true\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Decode [1 0]\n"
+						 "   /Filter /JPXDecode\n"
+						 "%s",
+						 info.width,
+						 info.height,
+						 surface_entry->interpolate ? "true" : "false",
+						 decode_parms_buf);
+    } else {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /ColorSpace /DeviceGray\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Interpolate %s\n"
+						 "%s"
+						 "   /Filter /JBIG2Decode\n"
+						 "%s",
+						 info.width,
+						 info.height,
+						 surface_entry->interpolate ? "true" : "false",
+						 smask_buf,
+						 decode_parms_buf);
+    }
+    if (unlikely(status))
+	return status;
+
+    _cairo_output_stream_write (surface->output, mime_data, mime_data_length);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_jpx_image (cairo_pdf_surface_t              *surface,
+				   cairo_surface_t	            *source,
+				   cairo_pdf_source_surface_entry_t *surface_entry,
+				   cairo_bool_t                      test)
+{
+    cairo_int_status_t status;
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_image_info_t info;
+    char smask_buf[30];
+
+    if (surface->pdf_version < CAIRO_PDF_VERSION_1_5)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JP2,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jpx_info (&info, mime_data, mime_data_length);
+    if (status)
+	return status;
+
+    if ((surface_entry->smask || surface_entry->stencil_mask) && info.num_components != 1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface_entry->stencil_mask) && info.bits_per_component != 1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface_entry->smask_res.id)
+	snprintf(smask_buf, sizeof(smask_buf), "   /SMask %d 0 R\n", surface_entry->smask_res.id);
+    else
+	smask_buf[0] = 0;
+
+    /* At this point we know emitting jpx will succeed. */
+    if (test)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface_entry->stencil_mask) {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /ImageMask true\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Decode [1 0]\n"
+						 "   /Filter /JPXDecode\n",
+						 info.width,
+						 info.height,
+						 surface_entry->interpolate ? "true" : "false");
+    } else {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /Interpolate %s\n"
+						 "%s"
+						 "   /Filter /JPXDecode\n",
+						 info.width,
+						 info.height,
+						 surface_entry->interpolate ? "true" : "false",
+						 smask_buf);
+    }
+    if (status)
+	return status;
+
+    _cairo_output_stream_write (surface->output, mime_data, mime_data_length);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_jpeg_image (cairo_pdf_surface_t              *surface,
+				    cairo_surface_t	             *source,
+				    cairo_pdf_source_surface_entry_t *surface_entry,
+				    cairo_bool_t                      test)
+{
+    cairo_int_status_t status;
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_image_info_t info;
+    const char *colorspace;
+    char smask_buf[30];
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JPEG,
+				 &mime_data, &mime_data_length);
+    if (unlikely (source->status))
+	return source->status;
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jpeg_info (&info, mime_data, mime_data_length);
+    if (unlikely (status))
+	return status;
+
+    if ((surface_entry->smask || surface_entry->stencil_mask) && info.num_components != 1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface_entry->stencil_mask) && info.bits_per_component != 1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    switch (info.num_components) {
+	case 1:
+	    colorspace = "/DeviceGray";
+	    break;
+	case 3:
+	    colorspace = "/DeviceRGB";
+	    break;
+	case 4:
+	    colorspace = "/DeviceCMYK";
+	    break;
+	default:
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* At this point we know emitting jpeg will succeed. */
+    if (test)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface_entry->smask_res.id)
+	snprintf(smask_buf, sizeof(smask_buf), "   /SMask %d 0 R\n", surface_entry->smask_res.id);
+    else
+	smask_buf[0] = 0;
+
+    if (surface_entry->stencil_mask) {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /ImageMask true\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Decode [1 0]\n"
+						 "   /Filter /DCTDecode\n",
+						 info.width,
+						 info.height,
+						 surface_entry->interpolate ? "true" : "false");
+    } else {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /ColorSpace %s\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent %d\n"
+						 "%s"
+						 "   /Filter /DCTDecode\n",
+						 info.width,
+						 info.height,
+						 colorspace,
+						 surface_entry->interpolate ? "true" : "false",
+						 info.bits_per_component,
+						 smask_buf);
+    }
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_write (surface->output, mime_data, mime_data_length);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_ccitt_image (cairo_pdf_surface_t              *surface,
+				     cairo_surface_t	             *source,
+				     cairo_pdf_source_surface_entry_t *surface_entry,
+				     cairo_bool_t                      test)
+{
+    cairo_status_t status;
+    const unsigned char *ccitt_data;
+    unsigned long ccitt_data_len;
+    const unsigned char *ccitt_params_string;
+    unsigned long ccitt_params_string_len;
+    char *params, *p, *end;
+    cairo_ccitt_params_t ccitt_params;
+    char buf[300];
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_CCITT_FAX,
+				 &ccitt_data, &ccitt_data_len);
+    if (unlikely (source->status))
+	return source->status;
+    if (ccitt_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
+				 &ccitt_params_string, &ccitt_params_string_len);
+    if (unlikely (source->status))
+	return source->status;
+    if (ccitt_params_string == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* ensure params_string is null terminated */
+    params = malloc (ccitt_params_string_len + 1);
+    memcpy (params, ccitt_params_string, ccitt_params_string_len);
+    params[ccitt_params_string_len] = 0;
+    status = _cairo_tag_parse_ccitt_params (params, &ccitt_params);
+    if (unlikely(status))
+	return source->status;
+
+    free (params);
+
+    /* At this point we know emitting jbig2 will succeed. */
+    if (test)
+	return CAIRO_STATUS_SUCCESS;
+
+    p = buf;
+    *p = 0;
+    end = buf + sizeof(buf) - 1;
+    p += snprintf (p, end - p, "/Columns %d /Rows %d /K %d",
+				 ccitt_params.columns,
+				 ccitt_params.rows,
+				 ccitt_params.k);
+    if (ccitt_params.end_of_line)
+	p += snprintf (p, end - p, " /EndOfLine true");
+
+    if (ccitt_params.encoded_byte_align)
+	p += snprintf (p, end - p, " /EncodedByteAlign true");
+
+    if (!ccitt_params.end_of_block)
+	p += snprintf (p, end - p, " /EndOfBlock false");
+
+    if (ccitt_params.black_is_1)
+	p += snprintf (p, end - p, " /BlackIs1 true");
+
+    if (ccitt_params.damaged_rows_before_error > 0) {
+	p += snprintf (p, end - p, " /DamagedRowsBeforeError %d",
+		       ccitt_params.damaged_rows_before_error);
+    }
+
+    if (surface_entry->stencil_mask) {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /ImageMask true\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /Interpolate %s\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Decode [1 0]\n"
+						 "   /Filter /CCITTFaxDecode\n"
+						 "   /DecodeParms << %s >> ",
+						 ccitt_params.columns,
+						 ccitt_params.rows,
+						 surface_entry->interpolate ? "true" : "false",
+						 buf);
+    } else {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &surface_entry->surface_res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /ColorSpace /DeviceGray\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Interpolate %s\n"
+						 "   /Filter /CCITTFaxDecode\n"
+						 "   /DecodeParms << %s >> ",
+						 ccitt_params.columns,
+						 ccitt_params.rows,
+						 surface_entry->interpolate ? "true" : "false",
+						 buf);
+    }
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_write (surface->output, ccitt_data, ccitt_data_len);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_recording_surface (cairo_pdf_surface_t        *surface,
+					   cairo_pdf_source_surface_t *pdf_source)
+{
+    cairo_rectangle_int_t old_surface_extents;
+    cairo_bool_t old_surface_bounded;
+    cairo_paginated_mode_t old_paginated_mode;
+    cairo_surface_clipper_t old_clipper;
+    cairo_bool_t old_in_xobject;
+    cairo_box_double_t bbox;
+    cairo_int_status_t status;
+    int alpha = 0;
+    cairo_surface_t *free_me = NULL;
+    cairo_surface_t *source;
+    const cairo_rectangle_int_t *extents;
+    cairo_bool_t is_subsurface;
+    cairo_bool_t transparency_group;
+    cairo_recording_surface_t *recording;
+
+    assert (pdf_source->type == CAIRO_PATTERN_TYPE_SURFACE);
+
+    if (pdf_source->hash_entry->bounded) {
+	extents = &pdf_source->hash_entry->extents;
+    } else {
+	extents = &pdf_source->hash_entry->required_extents;
+    }
+
+    is_subsurface = FALSE;
+    source = pdf_source->surface;
+    if (_cairo_surface_is_snapshot (source))
+	free_me = source = _cairo_surface_snapshot_get_target (source);
+
+    if (source->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) source;
+
+	source = sub->target;
+	extents = &sub->extents;
+	is_subsurface = TRUE;
+    }
+
+    assert (source->type == CAIRO_SURFACE_TYPE_RECORDING);
+    recording = (cairo_recording_surface_t *) source;
+
+    old_in_xobject = surface->in_xobject;
+    old_surface_extents = surface->surface_extents;
+    old_surface_bounded = surface->surface_bounded;
+    old_paginated_mode = surface->paginated_mode;
+    old_clipper = surface->clipper;
+    surface->surface_extents = *extents;
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_pdf_surface_clipper_intersect_clip_path);
+
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+    surface->in_xobject = TRUE;
+    surface->surface_extents = *extents;
+    surface->surface_bounded = TRUE;
+
+    /* Patterns are emitted after fallback images. The paginated mode
+     * needs to be set to _RENDER while the recording surface is replayed
+     * back to this surface.
+     */
+    surface->paginated_mode = CAIRO_PAGINATED_MODE_RENDER;
+    _cairo_pdf_group_resources_clear (&surface->resources);
+    _get_bbox_from_extents (extents, &bbox);
+
+    /* We can optimize away the transparency group allowing the viewer
+     * to replay the group in place when:
+     *  - ca/CA when painting this groups is 1.0 (need_transp_group is FALSE),
+     *  - all operators are OVER, and
+     *  - the recording contains only opaque and/or clear alpha.
+     */
+    transparency_group = pdf_source->hash_entry->need_transp_group ||
+	!(pdf_source->hash_entry->operator == CAIRO_OPERATOR_OVER &&
+			   _cairo_recording_surface_has_only_bilevel_alpha (recording) &&
+			   _cairo_recording_surface_has_only_op_over (recording));
+
+    status = _cairo_pdf_surface_open_content_stream (surface,
+						     &bbox,
+						     &pdf_source->hash_entry->surface_res,
+						     TRUE,
+						     transparency_group);
+    if (unlikely (status))
+	goto err;
+
+    if (source->content == CAIRO_CONTENT_COLOR) {
+	status = _cairo_pdf_surface_add_alpha (surface, 1.0, &alpha);
+	if (unlikely (status))
+	    goto err;
+
+	_cairo_output_stream_printf (surface->output,
+				     "q /a%d gs 0 0 0 rg %d %d %d %d re f Q\n",
+				     alpha,
+				     extents->x,
+				     extents->y,
+				     extents->width,
+				     extents->height);
+    }
+
+    status = _cairo_recording_surface_replay_region (source,
+						     is_subsurface ? extents : NULL,
+						     &surface->base,
+						     CAIRO_RECORDING_REGION_NATIVE);
+    assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
+    if (unlikely (status))
+	goto err;
+
+    status = _cairo_pdf_surface_close_content_stream (surface);
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+    surface->clipper = old_clipper;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+    surface->in_xobject = old_in_xobject;
+    surface->paginated_mode = old_paginated_mode;
+    surface->surface_extents = old_surface_extents;
+    surface->surface_bounded = old_surface_bounded;
+
+err:
+    cairo_surface_destroy (free_me);
+    return status;
+}
+
+/**
+ * _cairo_pdf_surface_emit_surface:
+ * @surface: [in] the pdf surface
+ * @source: [in] #cairo_pdf_source_surface_t containing the surface to write
+ * @test: [in] if true, test what type of surface will be emitted.
+ * @is_image: [out] if @test is true, returns TRUE if the surface will be emitted
+ *  as an Image XObject.
+ *
+ * If @test is FALSE, emit @src_surface as an XObject.
+ * If @test is TRUE, don't emit anything. Set @is_image based on the output that would be emitted.
+ **/
+static cairo_int_status_t
+_cairo_pdf_surface_emit_surface (cairo_pdf_surface_t        *surface,
+				 cairo_pdf_source_surface_t *source,
+				 cairo_bool_t                test,
+				 cairo_bool_t               *is_image)
+{
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_int_status_t status;
+
+    /* Try all the supported mime types and recording type, falling through
+     * each option if unsupported */
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	status = _cairo_pdf_surface_emit_jbig2_image (surface,
+						      source->surface,
+						      source->hash_entry,
+						      test);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	    *is_image = TRUE;
+	    return status;
+	}
+
+	status = _cairo_pdf_surface_emit_jpx_image (surface,
+						    source->surface,
+						    source->hash_entry,
+						    test);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	    *is_image = TRUE;
+	    return status;
+	}
+
+	status = _cairo_pdf_surface_emit_jpeg_image (surface,
+						     source->surface,
+						     source->hash_entry,
+						     test);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	    *is_image = TRUE;
+	    return status;
+	}
+
+	status = _cairo_pdf_surface_emit_ccitt_image (surface,
+						      source->surface,
+						      source->hash_entry,
+						      test);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	    *is_image = TRUE;
+	    return status;
+	}
+
+	if (source->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	    if (test) {
+		*is_image = FALSE;
+		return CAIRO_INT_STATUS_SUCCESS;
+	    } else {
+		return _cairo_pdf_surface_emit_recording_surface (surface, source);
+	    }
+	}
+    }
+
+    /* The only option left is to emit as an image surface */
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	status = _cairo_surface_acquire_source_image (source->surface, &image, &image_extra);
+    } else {
+	status = _cairo_pdf_surface_acquire_source_image_from_pattern (surface,
+								       source->raster_pattern,
+								       &image,
+								       &image_extra);
+    }
+    if (unlikely (status))
+	return status;
+
+    if (test) {
+	*is_image = TRUE;
+    } else {
+	status = _cairo_pdf_surface_emit_image (surface,
+						image,
+						source->hash_entry);
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	_cairo_surface_release_source_image (source->surface, image, image_extra);
+    } else {
+	_cairo_pdf_surface_release_source_image_from_pattern (surface,
+							      source->raster_pattern,
+							      image,
+							      image_extra);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_surface_pattern (cairo_pdf_surface_t	*surface,
+					 cairo_pdf_pattern_t	*pdf_pattern)
+{
+    cairo_pattern_t *pattern = pdf_pattern->pattern;
+    cairo_int_status_t status;
+    cairo_matrix_t cairo_p2d, pdf_p2d;
+    cairo_extend_t extend = cairo_pattern_get_extend (pattern);
+    double xstep, ystep;
+    cairo_rectangle_int_t pattern_extents;
+    double x_offset;
+    double y_offset;
+    char draw_surface[50];
+    char draw_surface2[200];
+    cairo_box_double_t bbox;
+    cairo_matrix_t mat;
+    cairo_pdf_source_surface_entry_t *pdf_source;
+    cairo_rectangle_int_t op_extents;
+
+    assert (pattern->type == CAIRO_PATTERN_TYPE_SURFACE);
+    if (pattern->extend == CAIRO_EXTEND_PAD) {
+	status = _cairo_pdf_surface_add_padded_image_surface (surface,
+							      pattern,
+							      &pdf_pattern->extents,
+							      &pdf_source,
+							      &x_offset,
+							      &y_offset,
+							      &op_extents);
+    } else {
+	status = _cairo_pdf_surface_add_source_surface (surface,
+							NULL,
+							pattern,
+							pdf_pattern->operator,
+							pattern->filter,
+							FALSE, /* stencil mask */
+							FALSE, /* smask */
+							FALSE, /* need_transp_group */
+							&pdf_pattern->extents,
+							NULL, /* smask_res */
+							&pdf_source,
+							&x_offset,
+							&y_offset,
+							&op_extents);
+    }
+    if (unlikely (status))
+	return status;
+
+    pattern_extents = pdf_source->extents;
+    if (!pdf_source->bounded)
+    {
+	extend = CAIRO_EXTEND_NONE;
+	_cairo_rectangle_intersect (&pattern_extents, &op_extents);
+    }
+
+    switch (extend) {
+    case CAIRO_EXTEND_PAD:
+    case CAIRO_EXTEND_NONE:
+    {
+	/* In PS/PDF, (as far as I can tell), all patterns are
+	 * repeating. So we support cairo's EXTEND_NONE semantics
+	 * by setting the repeat step size to a size large enough
+	 * to guarantee that no more than a single occurrence will
+	 * be visible.
+	 *
+	 * First, map the surface extents into pattern space (since
+	 * xstep and ystep are in pattern space).  Then use an upper
+	 * bound on the length of the diagonal of the pattern image
+	 * and the surface as repeat size.  This guarantees to never
+	 * repeat visibly.
+	 */
+	double x1 = 0.0, y1 = 0.0;
+	double x2 = surface->surface_extents.width;
+	double y2 = surface->surface_extents.height;
+	_cairo_matrix_transform_bounding_box (&pattern->matrix,
+					      &x1, &y1, &x2, &y2,
+					      NULL);
+
+	/* Rather than computing precise bounds of the union, just
+	 * add the surface extents unconditionally. We only
+	 * required an answer that's large enough, we don't really
+	 * care if it's not as tight as possible.*/
+	xstep = ystep = ceil ((x2 - x1) + (y2 - y1) +
+			      pattern_extents.width + pattern_extents.height);
+    }
+    break;
+    case CAIRO_EXTEND_REPEAT:
+	xstep = pattern_extents.width;
+	ystep = pattern_extents.height;
+	break;
+
+    case CAIRO_EXTEND_REFLECT:
+	pattern_extents.width *= 2;
+	pattern_extents.height *= 2;
+	xstep = pattern_extents.width;
+	ystep = pattern_extents.height;
+	break;
+
+    /* All the rest (if any) should have been analyzed away, so this
+     * case should be unreachable. */
+    default:
+	ASSERT_NOT_REACHED;
+	xstep = 0;
+	ystep = 0;
+    }
+
+    /* At this point, (that is, within the surface backend interface),
+     * the pattern's matrix maps from cairo's device space to cairo's
+     * pattern space, (both with their origin at the upper-left, and
+     * cairo's pattern space of size width,height).
+     *
+     * Then, we must emit a PDF pattern object that maps from its own
+     * pattern space, (which has a size that we establish in the BBox
+     * dictionary entry), to the PDF page's *initial* space, (which
+     * does not benefit from the Y-axis flipping matrix that we emit
+     * on each page). So the PDF patterns matrix maps from a
+     * (width,height) pattern space to a device space with the origin
+     * in the lower-left corner.
+     *
+     * So to handle all of that, we start with an identity matrix for
+     * the PDF pattern to device matrix. We translate it up by the
+     * image height then flip it in the Y direction, (moving us from
+     * the PDF origin to cairo's origin). We then multiply in the
+     * inverse of the cairo pattern matrix, (since it maps from device
+     * to pattern, while we're setting up pattern to device). Finally,
+     * we translate back down by the image height and flip again to
+     * end up at the lower-left origin that PDF expects.
+     *
+     * Additionally, within the stream that paints the pattern itself,
+     * we are using a PDF image object that has a size of (1,1) so we
+     * have to scale it up by the image width and height to fill our
+     * pattern cell.
+     */
+    cairo_p2d = pattern->matrix;
+    status = cairo_matrix_invert (&cairo_p2d);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    if (pdf_pattern->inverted_y_axis)
+	cairo_matrix_init (&mat, 1, 0, 0, 1, 0, 0);
+    else
+	cairo_matrix_init (&mat, 1, 0, 0, -1, 0, surface->height);
+
+    cairo_matrix_multiply (&pdf_p2d, &cairo_p2d, &mat);
+    cairo_matrix_translate (&pdf_p2d, x_offset, y_offset);
+    if (pdf_source->emit_image) {
+	cairo_matrix_translate (&pdf_p2d, 0.0, pdf_source->extents.height);
+	cairo_matrix_scale (&pdf_p2d, 1.0, -1.0);
+    }
+
+    _get_bbox_from_extents (&pattern_extents, &bbox);
+    _cairo_pdf_surface_update_object (surface, pdf_pattern->pattern_res);
+    status = _cairo_pdf_surface_open_stream (surface,
+				             &pdf_pattern->pattern_res,
+					     FALSE,
+					     "   /PatternType 1\n"
+					     "   /BBox [ %f %f %f %f ]\n"
+					     "   /XStep %f\n"
+					     "   /YStep %f\n"
+					     "   /TilingType 1\n"
+					     "   /PaintType 1\n"
+					     "   /Matrix [ %f %f %f %f %f %f ]\n"
+					     "   /Resources << /XObject << /x%d %d 0 R >> >>\n",
+					     bbox.p1.x, bbox.p1.y, bbox.p2.x, bbox.p2.y,
+					     xstep, ystep,
+					     pdf_p2d.xx, pdf_p2d.yx,
+					     pdf_p2d.xy, pdf_p2d.yy,
+					     pdf_p2d.x0, pdf_p2d.y0,
+					     pdf_source->surface_res.id,
+					     pdf_source->surface_res.id);
+    if (unlikely (status))
+	return status;
+
+    if (pdf_source->emit_image) {
+	snprintf(draw_surface,
+		 sizeof (draw_surface),
+		 "q %d 0 0 %d 0 0 cm /x%d Do Q",
+		 pdf_source->extents.width,
+		 pdf_source->extents.height,
+		 pdf_source->surface_res.id);
+    } else {
+	snprintf(draw_surface,
+		 sizeof (draw_surface),
+		 "/x%d Do",
+		 pdf_source->surface_res.id);
+    }
+
+    if (extend == CAIRO_EXTEND_REFLECT) {
+	cairo_rectangle_int_t p_extents = pdf_source->extents;
+	snprintf(draw_surface2,
+		 sizeof (draw_surface2),
+		 "%d %d %d %d re W n %s",
+		 p_extents.x, p_extents.y,
+		 p_extents.width, p_extents.height,
+		 draw_surface);
+
+	_cairo_output_stream_printf (surface->output, "q %s Q\n", draw_surface2);
+
+	cairo_matrix_init_translate (&mat, p_extents.x, p_extents.y);
+	cairo_matrix_scale (&mat, -1, 1);
+	cairo_matrix_translate (&mat, -2*p_extents.width, 0);
+	cairo_matrix_translate (&mat, -p_extents.x, -p_extents.y);
+	_cairo_output_stream_printf (surface->output, "q ");
+	_cairo_output_stream_print_matrix (surface->output, &mat);
+	_cairo_output_stream_printf (surface->output, " cm %s Q\n", draw_surface2);
+
+	cairo_matrix_init_translate (&mat, p_extents.x, p_extents.y);
+	cairo_matrix_scale (&mat, 1, -1);
+	cairo_matrix_translate (&mat, 0, -2*p_extents.height);
+	cairo_matrix_translate (&mat, -p_extents.x, -p_extents.y);
+	_cairo_output_stream_printf (surface->output, "q ");
+	_cairo_output_stream_print_matrix (surface->output, &mat);
+	_cairo_output_stream_printf (surface->output, " cm %s Q\n", draw_surface2);
+
+	cairo_matrix_init_translate (&mat, p_extents.x, p_extents.y);
+	cairo_matrix_scale (&mat, -1, -1);
+	cairo_matrix_translate (&mat, -2*p_extents.width, -2*p_extents.height);
+	cairo_matrix_translate (&mat, -p_extents.x, -p_extents.y);
+	_cairo_output_stream_printf (surface->output, "q ");
+	_cairo_output_stream_print_matrix (surface->output, &mat);
+	_cairo_output_stream_printf (surface->output, " cm %s Q\n", draw_surface2);
+    } else {
+	_cairo_output_stream_printf (surface->output,
+				     " %s \n",
+				     draw_surface);
+    }
+
+    status = _cairo_pdf_surface_close_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+typedef struct _cairo_pdf_color_stop {
+    double offset;
+    double color[4];
+    cairo_pdf_resource_t resource;
+} cairo_pdf_color_stop_t;
+
+static cairo_int_status_t
+cairo_pdf_surface_emit_rgb_linear_function (cairo_pdf_surface_t    *surface,
+                                            cairo_pdf_color_stop_t *stop1,
+                                            cairo_pdf_color_stop_t *stop2,
+                                            cairo_pdf_resource_t   *function)
+{
+    int num_elems, i;
+    cairo_pdf_rgb_linear_function_t elem;
+    cairo_pdf_resource_t res;
+    cairo_int_status_t status;
+
+    num_elems = _cairo_array_num_elements (&surface->rgb_linear_functions);
+    for (i = 0; i < num_elems; i++) {
+	_cairo_array_copy_element (&surface->rgb_linear_functions, i, &elem);
+        if (memcmp (&elem.color1[0], &stop1->color[0], sizeof (double)*3) != 0)
+            continue;
+        if (memcmp (&elem.color2[0], &stop2->color[0], sizeof (double)*3) != 0)
+            continue;
+        *function =  elem.resource;
+        return CAIRO_STATUS_SUCCESS;
+    }
+
+    res = _cairo_pdf_surface_new_object (surface);
+    if (res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /FunctionType 2\n"
+				 "   /Domain [ 0 1 ]\n"
+				 "   /C0 [ %f %f %f ]\n"
+				 "   /C1 [ %f %f %f ]\n"
+				 "   /N 1\n"
+				 ">>\n"
+				 "endobj\n",
+				 res.id,
+                                 stop1->color[0],
+                                 stop1->color[1],
+                                 stop1->color[2],
+                                 stop2->color[0],
+                                 stop2->color[1],
+                                 stop2->color[2]);
+
+    elem.resource = res;
+    memcpy (&elem.color1[0], &stop1->color[0], sizeof (double)*3);
+    memcpy (&elem.color2[0], &stop2->color[0], sizeof (double)*3);
+
+    status = _cairo_array_append (&surface->rgb_linear_functions, &elem);
+    *function = res;
+
+    return status;
+}
+
+static cairo_int_status_t
+cairo_pdf_surface_emit_alpha_linear_function (cairo_pdf_surface_t    *surface,
+                                              cairo_pdf_color_stop_t *stop1,
+                                              cairo_pdf_color_stop_t *stop2,
+                                              cairo_pdf_resource_t   *function)
+{
+    int num_elems, i;
+    cairo_pdf_alpha_linear_function_t elem;
+    cairo_pdf_resource_t res;
+    cairo_int_status_t status;
+
+    num_elems = _cairo_array_num_elements (&surface->alpha_linear_functions);
+    for (i = 0; i < num_elems; i++) {
+	_cairo_array_copy_element (&surface->alpha_linear_functions, i, &elem);
+        if (elem.alpha1 != stop1->color[3])
+            continue;
+        if (elem.alpha2 != stop2->color[3])
+            continue;
+        *function =  elem.resource;
+        return CAIRO_STATUS_SUCCESS;
+    }
+
+    res = _cairo_pdf_surface_new_object (surface);
+    if (res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /FunctionType 2\n"
+				 "   /Domain [ 0 1 ]\n"
+				 "   /C0 [ %f ]\n"
+				 "   /C1 [ %f ]\n"
+				 "   /N 1\n"
+				 ">>\n"
+				 "endobj\n",
+				 res.id,
+                                 stop1->color[3],
+                                 stop2->color[3]);
+
+    elem.resource = res;
+    elem.alpha1 = stop1->color[3];
+    elem.alpha2 = stop2->color[3];
+
+    status = _cairo_array_append (&surface->alpha_linear_functions, &elem);
+    *function = res;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_stitched_colorgradient (cairo_pdf_surface_t    *surface,
+                                                unsigned int	        n_stops,
+                                                cairo_pdf_color_stop_t *stops,
+                                                cairo_bool_t	        is_alpha,
+                                                cairo_pdf_resource_t   *function)
+{
+    cairo_pdf_resource_t res;
+    unsigned int i;
+    cairo_int_status_t status;
+
+    /* emit linear gradients between pairs of subsequent stops... */
+    for (i = 0; i < n_stops-1; i++) {
+        if (is_alpha) {
+            status = cairo_pdf_surface_emit_alpha_linear_function (surface,
+                                                                   &stops[i],
+                                                                   &stops[i+1],
+                                                                   &stops[i].resource);
+            if (unlikely (status))
+                return status;
+        } else {
+            status = cairo_pdf_surface_emit_rgb_linear_function (surface,
+                                                                 &stops[i],
+                                                                 &stops[i+1],
+                                                                 &stops[i].resource);
+            if (unlikely (status))
+                return status;
+        }
+    }
+
+    /* ... and stitch them together */
+    res = _cairo_pdf_surface_new_object (surface);
+    if (res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /FunctionType 3\n"
+				 "   /Domain [ %f %f ]\n",
+				 res.id,
+                                 stops[0].offset,
+                                 stops[n_stops - 1].offset);
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Functions [ ");
+    for (i = 0; i < n_stops-1; i++)
+        _cairo_output_stream_printf (surface->output,
+                                     "%d 0 R ", stops[i].resource.id);
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Bounds [ ");
+    for (i = 1; i < n_stops-1; i++)
+        _cairo_output_stream_printf (surface->output,
+				     "%f ", stops[i].offset);
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Encode [ ");
+    for (i = 1; i < n_stops; i++)
+        _cairo_output_stream_printf (surface->output,
+				     "0 1 ");
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    *function = res;
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+
+static void
+calc_gradient_color (cairo_pdf_color_stop_t *new_stop,
+		     cairo_pdf_color_stop_t *stop1,
+		     cairo_pdf_color_stop_t *stop2)
+{
+    int i;
+    double offset = stop1->offset / (stop1->offset + 1.0 - stop2->offset);
+
+    for (i = 0; i < 4; i++)
+	new_stop->color[i] = stop1->color[i] + offset*(stop2->color[i] - stop1->color[i]);
+}
+
+#define COLOR_STOP_EPSILON 1e-6
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_pattern_stops (cairo_pdf_surface_t      *surface,
+                                       cairo_gradient_pattern_t *pattern,
+                                       cairo_pdf_resource_t     *color_function,
+                                       cairo_pdf_resource_t     *alpha_function)
+{
+    cairo_pdf_color_stop_t *allstops, *stops;
+    unsigned int n_stops;
+    unsigned int i;
+    cairo_bool_t emit_alpha = FALSE;
+    cairo_int_status_t status;
+
+    color_function->id = 0;
+    alpha_function->id = 0;
+
+    allstops = _cairo_malloc_ab ((pattern->n_stops + 2), sizeof (cairo_pdf_color_stop_t));
+    if (unlikely (allstops == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    stops = &allstops[1];
+    n_stops = pattern->n_stops;
+
+    for (i = 0; i < n_stops; i++) {
+	stops[i].color[0] = pattern->stops[i].color.red;
+	stops[i].color[1] = pattern->stops[i].color.green;
+	stops[i].color[2] = pattern->stops[i].color.blue;
+	stops[i].color[3] = pattern->stops[i].color.alpha;
+        if (!CAIRO_ALPHA_IS_OPAQUE (stops[i].color[3]))
+            emit_alpha = TRUE;
+	stops[i].offset = pattern->stops[i].offset;
+    }
+
+    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
+	pattern->base.extend == CAIRO_EXTEND_REFLECT) {
+	if (stops[0].offset > COLOR_STOP_EPSILON) {
+	    if (pattern->base.extend == CAIRO_EXTEND_REFLECT)
+		memcpy (allstops, stops, sizeof (cairo_pdf_color_stop_t));
+	    else
+		calc_gradient_color (&allstops[0], &stops[0], &stops[n_stops-1]);
+	    stops = allstops;
+	    n_stops++;
+	}
+	stops[0].offset = 0.0;
+
+	if (stops[n_stops-1].offset < 1.0 - COLOR_STOP_EPSILON) {
+	    if (pattern->base.extend == CAIRO_EXTEND_REFLECT) {
+		memcpy (&stops[n_stops],
+			&stops[n_stops - 1],
+			sizeof (cairo_pdf_color_stop_t));
+	    } else {
+		calc_gradient_color (&stops[n_stops], &stops[0], &stops[n_stops-1]);
+	    }
+	    n_stops++;
+	}
+	stops[n_stops-1].offset = 1.0;
+    }
+
+    if (stops[0].offset == stops[n_stops - 1].offset) {
+	/*
+	 * The first and the last stops have the same offset, but we
+	 * don't want a function with an empty domain, because that
+	 * would provoke underdefined behaviour from rasterisers.
+	 * This can only happen with EXTEND_PAD, because EXTEND_NONE
+	 * is optimised into a clear pattern in cairo-gstate, and
+	 * REFLECT/REPEAT are always transformed to have the first
+	 * stop at t=0 and the last stop at t=1.  Thus we want a step
+	 * function going from the first color to the last one.
+	 *
+	 * This can be accomplished by stitching three functions:
+	 *  - a constant first color function,
+	 *  - a step from the first color to the last color (with empty domain)
+	 *  - a constant last color function
+	 */
+	cairo_pdf_color_stop_t pad_stops[4];
+
+	assert (pattern->base.extend == CAIRO_EXTEND_PAD);
+
+	pad_stops[0] = pad_stops[1] = stops[0];
+	pad_stops[2] = pad_stops[3] = stops[n_stops - 1];
+
+	pad_stops[0].offset = 0;
+	pad_stops[3].offset = 1;
+
+        status = _cairo_pdf_surface_emit_stitched_colorgradient (surface,
+                                                                 4,
+                                                                 pad_stops,
+                                                                 FALSE,
+                                                                 color_function);
+        if (unlikely (status))
+            goto BAIL;
+
+        if (emit_alpha) {
+            status = _cairo_pdf_surface_emit_stitched_colorgradient (surface,
+                                                                     4,
+                                                                     pad_stops,
+                                                                     TRUE,
+                                                                     alpha_function);
+            if (unlikely (status))
+                goto BAIL;
+        }
+    } else if (n_stops == 2) {
+        /* no need for stitched function */
+        status = cairo_pdf_surface_emit_rgb_linear_function (surface,
+                                                             &stops[0],
+                                                             &stops[n_stops - 1],
+                                                             color_function);
+        if (unlikely (status))
+            goto BAIL;
+
+        if (emit_alpha) {
+            status = cairo_pdf_surface_emit_alpha_linear_function (surface,
+                                                                   &stops[0],
+                                                                   &stops[n_stops - 1],
+                                                                   alpha_function);
+            if (unlikely (status))
+                goto BAIL;
+        }
+    } else {
+        /* multiple stops: stitch. XXX possible optimization: regularly spaced
+         * stops do not require stitching. XXX */
+        status = _cairo_pdf_surface_emit_stitched_colorgradient (surface,
+                                                                 n_stops,
+                                                                 stops,
+                                                                 FALSE,
+                                                                 color_function);
+        if (unlikely (status))
+            goto BAIL;
+
+        if (emit_alpha) {
+            status = _cairo_pdf_surface_emit_stitched_colorgradient (surface,
+                                                                     n_stops,
+                                                                     stops,
+                                                                     TRUE,
+                                                                     alpha_function);
+            if (unlikely (status))
+                goto BAIL;
+        }
+    }
+
+BAIL:
+    free (allstops);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_repeating_function (cairo_pdf_surface_t      *surface,
+					    cairo_gradient_pattern_t *pattern,
+					    cairo_pdf_resource_t     *function,
+					    int                       begin,
+					    int                       end)
+{
+    cairo_pdf_resource_t res;
+    int i;
+
+    res = _cairo_pdf_surface_new_object (surface);
+    if (res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /FunctionType 3\n"
+				 "   /Domain [ %d %d ]\n",
+				 res.id,
+                                 begin,
+                                 end);
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Functions [ ");
+    for (i = begin; i < end; i++)
+        _cairo_output_stream_printf (surface->output,
+                                     "%d 0 R ", function->id);
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Bounds [ ");
+    for (i = begin + 1; i < end; i++)
+        _cairo_output_stream_printf (surface->output,
+				     "%d ", i);
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Encode [ ");
+    for (i = begin; i < end; i++) {
+	if ((i % 2) && pattern->base.extend == CAIRO_EXTEND_REFLECT) {
+	    _cairo_output_stream_printf (surface->output,
+					 "1 0 ");
+	} else {
+	    _cairo_output_stream_printf (surface->output,
+					 "0 1 ");
+	}
+    }
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    *function = res;
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+cairo_pdf_surface_emit_transparency_group (cairo_pdf_surface_t  *surface,
+					   cairo_pdf_pattern_t  *pdf_pattern,
+					   cairo_pdf_resource_t  gstate_resource,
+					   cairo_pdf_resource_t  gradient_mask)
+{
+    cairo_pdf_resource_t smask_resource;
+    cairo_int_status_t status;
+    char buf[100];
+    double x1, y1, x2, y2;
+
+    if (pdf_pattern->is_shading) {
+	snprintf(buf, sizeof(buf),
+		 "         /Shading\n"
+		 "            << /sh%d %d 0 R >>\n",
+		 gradient_mask.id,
+		 gradient_mask.id);
+    } else {
+	snprintf(buf, sizeof(buf),
+		 "         /Pattern\n"
+		 "            << /p%d %d 0 R >>\n",
+		 gradient_mask.id,
+		 gradient_mask.id);
+    }
+
+    if (pdf_pattern->is_shading) {
+	cairo_box_t box;
+
+	/* When emitting a shading operator we are in cairo pattern
+	 * coordinates. _cairo_pdf_surface_paint_gradient has set the
+	 * ctm to the pattern matrix (including the conversion from
+	 * pdf to cairo coordinates) */
+	_cairo_box_from_rectangle (&box, &pdf_pattern->extents);
+	_cairo_box_to_doubles (&box, &x1, &y1, &x2, &y2);
+	_cairo_matrix_transform_bounding_box (&pdf_pattern->pattern->matrix, &x1, &y1, &x2, &y2, NULL);
+    } else {
+	cairo_box_double_t box;
+
+	/* When emitting a shading pattern we are in pdf page
+	 * coordinates. The color and alpha shading patterns painted
+	 * in the XObject below contain the cairo pattern to pdf page
+	 * matrix in the /Matrix entry of the pattern. */
+	_get_bbox_from_extents (&pdf_pattern->extents, &box);
+	x1 = box.p1.x;
+	y1 = box.p1.y;
+	x2 = box.p2.x;
+	y2 = box.p2.y;
+    }
+    status = _cairo_pdf_surface_open_stream (surface,
+					     NULL,
+					     surface->compress_content,
+					     "   /Type /XObject\n"
+					     "   /Subtype /Form\n"
+					     "   /FormType 1\n"
+					     "   /BBox [ %f %f %f %f ]\n"
+					     "   /Resources\n"
+					     "      << /ExtGState\n"
+					     "            << /a0 << /ca 1 /CA 1 >>"
+					     "      >>\n"
+					     "%s"
+					     "      >>\n"
+					     "   /Group\n"
+					     "      << /Type /Group\n"
+					     "         /S /Transparency\n"
+					     "         /I true\n"
+					     "         /CS /DeviceGray\n"
+					     "      >>\n",
+					     x1,y1,x2,y2,
+					     buf);
+    if (unlikely (status))
+	return status;
+
+    if (pdf_pattern->is_shading) {
+	_cairo_output_stream_printf (surface->output,
+				     "/a0 gs /sh%d sh\n",
+				     gradient_mask.id);
+    } else {
+	_cairo_output_stream_printf (surface->output,
+				     "q\n"
+				     "/a0 gs\n"
+				     "/Pattern cs /p%d scn\n"
+				     "0 0 %f %f re\n"
+				     "f\n"
+				     "Q\n",
+				     gradient_mask.id,
+				     surface->width,
+				     surface->height);
+    }
+
+    status = _cairo_pdf_surface_close_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    smask_resource = _cairo_pdf_surface_new_object (surface);
+    if (smask_resource.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+                                 "%d 0 obj\n"
+                                 "<< /Type /Mask\n"
+                                 "   /S /Luminosity\n"
+                                 "   /G %d 0 R\n"
+                                 ">>\n"
+                                 "endobj\n",
+                                 smask_resource.id,
+                                 surface->pdf_stream.self.id);
+
+    /* Create GState which uses the transparency group as an SMask. */
+    _cairo_pdf_surface_update_object (surface, gstate_resource);
+
+    _cairo_output_stream_printf (surface->output,
+                                 "%d 0 obj\n"
+                                 "<< /Type /ExtGState\n"
+                                 "   /SMask %d 0 R\n"
+                                 "   /ca 1\n"
+                                 "   /CA 1\n"
+                                 "   /AIS false\n"
+                                 ">>\n"
+                                 "endobj\n",
+                                 gstate_resource.id,
+                                 smask_resource.id);
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static void
+_cairo_pdf_surface_output_gradient (cairo_pdf_surface_t        *surface,
+				    const cairo_pdf_pattern_t  *pdf_pattern,
+				    cairo_pdf_resource_t        pattern_resource,
+				    const cairo_matrix_t       *pat_to_pdf,
+				    const cairo_circle_double_t*start,
+				    const cairo_circle_double_t*end,
+				    const double               *domain,
+				    const char                 *colorspace,
+				    cairo_pdf_resource_t        color_function)
+{
+    _cairo_output_stream_printf (surface->output,
+                                 "%d 0 obj\n",
+				 pattern_resource.id);
+
+    if (!pdf_pattern->is_shading) {
+	_cairo_output_stream_printf (surface->output,
+				     "<< /Type /Pattern\n"
+				     "   /PatternType 2\n"
+				     "   /Matrix [ ");
+	_cairo_output_stream_print_matrix (surface->output, pat_to_pdf);
+	_cairo_output_stream_printf (surface->output,
+				     " ]\n"
+				     "   /Shading\n");
+    }
+
+    if (pdf_pattern->pattern->type == CAIRO_PATTERN_TYPE_LINEAR) {
+	_cairo_output_stream_printf (surface->output,
+				     "      << /ShadingType 2\n"
+				     "         /ColorSpace %s\n"
+				     "         /Coords [ %f %f %f %f ]\n",
+				     colorspace,
+				     start->center.x, start->center.y,
+				     end->center.x, end->center.y);
+    } else {
+	_cairo_output_stream_printf (surface->output,
+				     "      << /ShadingType 3\n"
+				     "         /ColorSpace %s\n"
+				     "         /Coords [ %f %f %f %f %f %f ]\n",
+				     colorspace,
+				     start->center.x, start->center.y,
+				     MAX (start->radius, 0),
+				     end->center.x, end->center.y,
+				     MAX (end->radius, 0));
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "         /Domain [ %f %f ]\n",
+				 domain[0], domain[1]);
+
+    if (pdf_pattern->pattern->extend != CAIRO_EXTEND_NONE) {
+        _cairo_output_stream_printf (surface->output,
+                                     "         /Extend [ true true ]\n");
+    } else {
+        _cairo_output_stream_printf (surface->output,
+                                     "         /Extend [ false false ]\n");
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "         /Function %d 0 R\n"
+                                 "      >>\n",
+				 color_function.id);
+
+    if (!pdf_pattern->is_shading) {
+	_cairo_output_stream_printf (surface->output,
+				     ">>\n");
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				     "endobj\n");
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_gradient (cairo_pdf_surface_t    *surface,
+				  cairo_pdf_pattern_t    *pdf_pattern)
+{
+    cairo_gradient_pattern_t *pattern = (cairo_gradient_pattern_t *) pdf_pattern->pattern;
+    cairo_pdf_resource_t color_function, alpha_function;
+    cairo_matrix_t pat_to_pdf;
+    cairo_circle_double_t start, end;
+    double domain[2];
+    cairo_int_status_t status;
+    cairo_matrix_t mat;
+
+    assert (pattern->n_stops != 0);
+
+    status = _cairo_pdf_surface_emit_pattern_stops (surface,
+                                                    pattern,
+                                                    &color_function,
+                                                    &alpha_function);
+    if (unlikely (status))
+	return status;
+
+    pat_to_pdf = pattern->base.matrix;
+    status = cairo_matrix_invert (&pat_to_pdf);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    if (pdf_pattern->inverted_y_axis)
+       cairo_matrix_init (&mat, 1, 0, 0, 1, 0, 0);
+    else
+       cairo_matrix_init (&mat, 1, 0, 0, -1, 0, surface->height);
+
+    cairo_matrix_multiply (&pat_to_pdf, &pat_to_pdf, &mat);
+
+    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
+	pattern->base.extend == CAIRO_EXTEND_REFLECT)
+    {
+	double bounds_x1, bounds_x2, bounds_y1, bounds_y2;
+	double x_scale, y_scale, tolerance;
+
+	/* TODO: use tighter extents */
+	bounds_x1 = 0;
+	bounds_y1 = 0;
+	bounds_x2 = surface->width;
+	bounds_y2 = surface->height;
+	_cairo_matrix_transform_bounding_box (&pattern->base.matrix,
+					      &bounds_x1, &bounds_y1,
+					      &bounds_x2, &bounds_y2,
+					      NULL);
+
+	x_scale = surface->base.x_resolution / surface->base.x_fallback_resolution;
+	y_scale = surface->base.y_resolution / surface->base.y_fallback_resolution;
+
+	tolerance = fabs (_cairo_matrix_compute_determinant (&pattern->base.matrix));
+	tolerance /= _cairo_matrix_transformed_circle_major_axis (&pattern->base.matrix, 1);
+	tolerance *= MIN (x_scale, y_scale);
+
+	_cairo_gradient_pattern_box_to_parameter (pattern,
+						  bounds_x1, bounds_y1,
+						  bounds_x2, bounds_y2,
+						  tolerance, domain);
+    } else if (pattern->stops[0].offset == pattern->stops[pattern->n_stops - 1].offset) {
+	/*
+	 * If the first and the last stop offset are the same, then
+	 * the color function is a step function.
+	 * _cairo_ps_surface_emit_pattern_stops emits it as a stitched
+	 * function no matter how many stops the pattern has.  The
+	 * domain of the stitched function will be [0 1] in this case.
+	 *
+	 * This is done to avoid emitting degenerate gradients for
+	 * EXTEND_PAD patterns having a step color function.
+	 */
+	domain[0] = 0.0;
+	domain[1] = 1.0;
+
+	assert (pattern->base.extend == CAIRO_EXTEND_PAD);
+    } else {
+	domain[0] = pattern->stops[0].offset;
+	domain[1] = pattern->stops[pattern->n_stops - 1].offset;
+    }
+
+    /* PDF requires the first and last stop to be the same as the
+     * extreme coordinates. For repeating patterns this moves the
+     * extreme coordinates out to the begin/end of the repeating
+     * function. For non repeating patterns this may move the extreme
+     * coordinates in if there are not stops at offset 0 and 1. */
+    _cairo_gradient_pattern_interpolate (pattern, domain[0], &start);
+    _cairo_gradient_pattern_interpolate (pattern, domain[1], &end);
+
+    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
+	pattern->base.extend == CAIRO_EXTEND_REFLECT)
+    {
+	int repeat_begin, repeat_end;
+
+	repeat_begin = floor (domain[0]);
+	repeat_end = ceil (domain[1]);
+
+	status = _cairo_pdf_surface_emit_repeating_function (surface,
+							     pattern,
+							     &color_function,
+							     repeat_begin,
+							     repeat_end);
+	if (unlikely (status))
+	    return status;
+
+	if (alpha_function.id != 0) {
+	    status = _cairo_pdf_surface_emit_repeating_function (surface,
+								 pattern,
+								 &alpha_function,
+								 repeat_begin,
+								 repeat_end);
+	    if (unlikely (status))
+		return status;
+	}
+    } else if (pattern->n_stops <= 2) {
+	/* For EXTEND_NONE and EXTEND_PAD if there are only two stops a
+	 * Type 2 function is used by itself without a stitching
+	 * function. Type 2 functions always have the domain [0 1] */
+	domain[0] = 0.0;
+	domain[1] = 1.0;
+    }
+
+    _cairo_pdf_surface_update_object (surface, pdf_pattern->pattern_res);
+    _cairo_pdf_surface_output_gradient (surface, pdf_pattern,
+					pdf_pattern->pattern_res,
+					&pat_to_pdf, &start, &end, domain,
+					"/DeviceRGB", color_function);
+
+    if (alpha_function.id != 0) {
+	cairo_pdf_resource_t mask_resource;
+
+	assert (pdf_pattern->gstate_res.id != 0);
+
+        /* Create pattern for SMask. */
+        mask_resource = _cairo_pdf_surface_new_object (surface);
+	if (mask_resource.id == 0)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_pdf_surface_output_gradient (surface, pdf_pattern,
+					    mask_resource,
+					    &pat_to_pdf, &start, &end, domain,
+					    "/DeviceGray", alpha_function);
+
+	status = cairo_pdf_surface_emit_transparency_group (surface,
+							    pdf_pattern,
+						            pdf_pattern->gstate_res,
+							    mask_resource);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_mesh_pattern (cairo_pdf_surface_t    *surface,
+				      cairo_pdf_pattern_t    *pdf_pattern)
+{
+    cairo_matrix_t pat_to_pdf;
+    cairo_int_status_t status;
+    cairo_pattern_t *pattern = pdf_pattern->pattern;
+    cairo_pdf_shading_t shading;
+    int i;
+    cairo_pdf_resource_t res;
+    cairo_matrix_t mat;
+
+    pat_to_pdf = pattern->matrix;
+    status = cairo_matrix_invert (&pat_to_pdf);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    if (pdf_pattern->inverted_y_axis)
+	cairo_matrix_init (&mat, 1, 0, 0, 1, 0, 0);
+    else
+	cairo_matrix_init (&mat, 1, 0, 0, -1, 0, surface->height);
+
+    cairo_matrix_multiply (&pat_to_pdf, &pat_to_pdf, &mat);
+
+    status = _cairo_pdf_shading_init_color (&shading, (cairo_mesh_pattern_t *) pattern);
+    if (unlikely (status))
+	return status;
+
+    res = _cairo_pdf_surface_new_object (surface);
+    if (unlikely (res.id == 0))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+                                 "<< /ShadingType %d\n"
+                                 "   /ColorSpace /DeviceRGB\n"
+				 "   /BitsPerCoordinate %d\n"
+				 "   /BitsPerComponent %d\n"
+				 "   /BitsPerFlag %d\n"
+				 "   /Decode [",
+				 res.id,
+				 shading.shading_type,
+				 shading.bits_per_coordinate,
+				 shading.bits_per_component,
+				 shading.bits_per_flag);
+
+    for (i = 0; i < shading.decode_array_length; i++)
+	_cairo_output_stream_printf (surface->output, "%f ", shading.decode_array[i]);
+
+    _cairo_output_stream_printf (surface->output,
+				 "]\n"
+				 "   /Length %ld\n"
+				 ">>\n"
+				 "stream\n",
+				 shading.data_length);
+
+    _cairo_output_stream_write (surface->output, shading.data, shading.data_length);
+
+    _cairo_output_stream_printf (surface->output,
+				 "\nendstream\n"
+				 "endobj\n");
+
+    _cairo_pdf_shading_fini (&shading);
+
+    _cairo_pdf_surface_update_object (surface, pdf_pattern->pattern_res);
+    _cairo_output_stream_printf (surface->output,
+                                 "%d 0 obj\n"
+                                 "<< /Type /Pattern\n"
+                                 "   /PatternType 2\n"
+                                 "   /Matrix [ ",
+				 pdf_pattern->pattern_res.id);
+    _cairo_output_stream_print_matrix (surface->output, &pat_to_pdf);
+    _cairo_output_stream_printf (surface->output,
+                                 " ]\n"
+                                 "   /Shading %d 0 R\n"
+				 ">>\n"
+				 "endobj\n",
+				 res.id);
+
+    if (pdf_pattern->gstate_res.id != 0) {
+	cairo_pdf_resource_t mask_resource;
+
+	/* Create pattern for SMask. */
+        res = _cairo_pdf_surface_new_object (surface);
+	if (unlikely (res.id == 0))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	status = _cairo_pdf_shading_init_alpha (&shading, (cairo_mesh_pattern_t *) pattern);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+                                 "<< /ShadingType %d\n"
+                                 "   /ColorSpace /DeviceGray\n"
+				 "   /BitsPerCoordinate %d\n"
+				 "   /BitsPerComponent %d\n"
+				 "   /BitsPerFlag %d\n"
+				 "   /Decode [",
+				 res.id,
+				 shading.shading_type,
+				 shading.bits_per_coordinate,
+				 shading.bits_per_component,
+				 shading.bits_per_flag);
+
+	for (i = 0; i < shading.decode_array_length; i++)
+	    _cairo_output_stream_printf (surface->output, "%f ", shading.decode_array[i]);
+
+	_cairo_output_stream_printf (surface->output,
+				     "]\n"
+				     "   /Length %ld\n"
+				     ">>\n"
+				     "stream\n",
+				     shading.data_length);
+
+	_cairo_output_stream_write (surface->output, shading.data, shading.data_length);
+
+	_cairo_output_stream_printf (surface->output,
+				     "\nendstream\n"
+				     "endobj\n");
+	_cairo_pdf_shading_fini (&shading);
+
+        mask_resource = _cairo_pdf_surface_new_object (surface);
+	if (unlikely (mask_resource.id == 0))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Pattern\n"
+				     "   /PatternType 2\n"
+				     "   /Matrix [ ",
+				     mask_resource.id);
+	_cairo_output_stream_print_matrix (surface->output, &pat_to_pdf);
+	_cairo_output_stream_printf (surface->output,
+				     " ]\n"
+				     "   /Shading %d 0 R\n"
+				     ">>\n"
+				     "endobj\n",
+				     res.id);
+
+	status = cairo_pdf_surface_emit_transparency_group (surface,
+							    pdf_pattern,
+						            pdf_pattern->gstate_res,
+							    mask_resource);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_pattern (cairo_pdf_surface_t *surface, cairo_pdf_pattern_t *pdf_pattern)
+{
+    cairo_int_status_t status;
+
+    switch (pdf_pattern->pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	ASSERT_NOT_REACHED;
+	status = _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	break;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	status = _cairo_pdf_surface_emit_surface_pattern (surface, pdf_pattern);
+	break;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	status = _cairo_pdf_surface_emit_gradient (surface, pdf_pattern);
+	break;
+
+    case CAIRO_PATTERN_TYPE_MESH:
+	status = _cairo_pdf_surface_emit_mesh_pattern (surface, pdf_pattern);
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+	status = _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+	break;
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_paint_surface_pattern (cairo_pdf_surface_t          *surface,
+					  cairo_operator_t              op,
+					  const cairo_pattern_t        *source,
+					  const cairo_rectangle_int_t  *extents,
+					  double                        alpha,
+					  cairo_pdf_resource_t	       *smask_res,
+					  cairo_bool_t                  stencil_mask)
+{
+    cairo_matrix_t cairo_p2d, pdf_p2d;
+    cairo_int_status_t status;
+    int alpha_id;
+    double x_offset;
+    double y_offset;
+    cairo_pdf_source_surface_entry_t *pdf_source;
+
+    if (source->extend == CAIRO_EXTEND_PAD &&
+	!(source->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	  ((cairo_surface_pattern_t *)source)->surface->type == CAIRO_SURFACE_TYPE_RECORDING))
+    {
+	status = _cairo_pdf_surface_add_padded_image_surface (surface,
+							      source,
+							      extents,
+							      &pdf_source,
+							      &x_offset,
+							      &y_offset,
+							      NULL);
+    } else {
+	status = _cairo_pdf_surface_add_source_surface (surface,
+							NULL,
+							source,
+							op,
+							source->filter,
+							stencil_mask,
+							FALSE, /* smask */
+							alpha != 1.0, /* need_transp_group */
+							extents,
+							smask_res,
+							&pdf_source,
+							&x_offset,
+							&y_offset,
+							NULL);
+    }
+    if (unlikely (status))
+	return status;
+
+    cairo_p2d = source->matrix;
+    status = cairo_matrix_invert (&cairo_p2d);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    pdf_p2d = surface->cairo_to_pdf;
+    cairo_matrix_multiply (&pdf_p2d, &cairo_p2d, &pdf_p2d);
+    cairo_matrix_translate (&pdf_p2d, x_offset, y_offset);
+    if (pdf_source->emit_image) {
+	int width, height;
+
+	if (pdf_source->bounded) {
+	    width = pdf_source->extents.width;
+	    height = pdf_source->extents.height;
+	} else {
+	    /* We can't scale an image to an unbounded surface size so just set the size to 1 */
+	    width = 1;
+	    height = 1;
+	}
+
+	cairo_matrix_translate (&pdf_p2d, 0.0, height);
+	cairo_matrix_scale (&pdf_p2d, 1.0, -1.0);
+	cairo_matrix_scale (&pdf_p2d, width, height);
+    }
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    if (! _cairo_matrix_is_identity (&pdf_p2d)) {
+	_cairo_output_stream_print_matrix (surface->output, &pdf_p2d);
+	_cairo_output_stream_printf (surface->output, " cm\n");
+    }
+
+    status = _cairo_pdf_surface_add_alpha (surface, alpha, &alpha_id);
+    if (unlikely (status))
+	return status;
+
+    if (stencil_mask) {
+	_cairo_output_stream_printf (surface->output,
+				     "/x%d Do\n",
+				     pdf_source->surface_res.id);
+    } else {
+	_cairo_output_stream_printf (surface->output,
+				     "/a%d gs /x%d Do\n",
+				     alpha_id,
+				     pdf_source->surface_res.id);
+    }
+
+    return _cairo_pdf_surface_add_xobject (surface, pdf_source->surface_res);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_paint_gradient (cairo_pdf_surface_t         *surface,
+				   cairo_operator_t             op,
+				   const cairo_pattern_t       *source,
+				   const cairo_rectangle_int_t *extents,
+				   double                       alpha)
+{
+    cairo_pdf_resource_t shading_res, gstate_res;
+    cairo_matrix_t pat_to_pdf;
+    cairo_int_status_t status;
+    int alpha_id;
+
+    status = _cairo_pdf_surface_add_pdf_shading (surface, source,
+						 op, extents,
+						 &shading_res, &gstate_res);
+    if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO))
+	return CAIRO_INT_STATUS_SUCCESS;
+    if (unlikely (status))
+	return status;
+
+    pat_to_pdf = source->matrix;
+    status = cairo_matrix_invert (&pat_to_pdf);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+    cairo_matrix_multiply (&pat_to_pdf, &pat_to_pdf, &surface->cairo_to_pdf);
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    if (! _cairo_matrix_is_identity (&pat_to_pdf)) {
+	_cairo_output_stream_print_matrix (surface->output, &pat_to_pdf);
+	_cairo_output_stream_printf (surface->output, " cm\n");
+    }
+
+    status = _cairo_pdf_surface_add_shading (surface, shading_res);
+    if (unlikely (status))
+	return status;
+
+    if (gstate_res.id != 0) {
+	status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     "/s%d gs /sh%d sh\n",
+				     gstate_res.id,
+				     shading_res.id);
+    } else {
+	status = _cairo_pdf_surface_add_alpha (surface, alpha, &alpha_id);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     "/a%d gs /sh%d sh\n",
+				     alpha_id,
+				     shading_res.id);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_paint_pattern (cairo_pdf_surface_t          *surface,
+				  cairo_operator_t              op,
+				  const cairo_pattern_t        *source,
+				  const cairo_rectangle_int_t  *extents,
+				  double                        alpha,
+				  cairo_bool_t                  mask)
+{
+    switch (source->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _cairo_pdf_surface_paint_surface_pattern (surface,
+							 op,
+							 source,
+							 extents,
+							 alpha,
+							 NULL,
+							 mask);
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _cairo_pdf_surface_paint_gradient (surface,
+						  op,
+						  source,
+						  extents,
+						  alpha);
+
+    case CAIRO_PATTERN_TYPE_SOLID:
+    default:
+	ASSERT_NOT_REACHED;
+	return CAIRO_STATUS_SUCCESS;
+    }
+}
+
+static cairo_bool_t
+_can_paint_pattern (const cairo_pattern_t *pattern)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return FALSE;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return (pattern->extend == CAIRO_EXTEND_NONE ||
+		pattern->extend == CAIRO_EXTEND_PAD);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return TRUE;
+
+    case CAIRO_PATTERN_TYPE_MESH:
+	return FALSE;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_select_operator (cairo_pdf_surface_t *surface,
+				    cairo_operator_t     op)
+{
+    cairo_int_status_t status;
+
+    if (op == surface->current_operator)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output,
+				 "/b%d gs\n", op);
+    surface->current_operator = op;
+    _cairo_pdf_surface_add_operator (surface, op);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_select_pattern (cairo_pdf_surface_t *surface,
+				   const cairo_pattern_t     *pattern,
+				   cairo_pdf_resource_t pattern_res,
+				   cairo_bool_t         is_stroke)
+{
+    cairo_int_status_t status;
+    int alpha;
+    const cairo_color_t *solid_color = NULL;
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_solid_pattern_t *solid = (const cairo_solid_pattern_t *) pattern;
+
+	solid_color = &solid->color;
+    }
+
+    if (solid_color != NULL) {
+	if (surface->current_pattern_is_solid_color == FALSE ||
+	    surface->current_color_red != solid_color->red ||
+	    surface->current_color_green != solid_color->green ||
+	    surface->current_color_blue != solid_color->blue ||
+	    surface->current_color_is_stroke != is_stroke)
+	{
+	    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "%f %f %f ",
+					 solid_color->red,
+					 solid_color->green,
+					 solid_color->blue);
+
+	    if (is_stroke)
+		_cairo_output_stream_printf (surface->output, "RG ");
+	    else
+		_cairo_output_stream_printf (surface->output, "rg ");
+
+	    surface->current_color_red = solid_color->red;
+	    surface->current_color_green = solid_color->green;
+	    surface->current_color_blue = solid_color->blue;
+	    surface->current_color_is_stroke = is_stroke;
+	}
+
+	if (surface->current_pattern_is_solid_color == FALSE ||
+	    surface->current_color_alpha != solid_color->alpha)
+	{
+	    status = _cairo_pdf_surface_add_alpha (surface, solid_color->alpha, &alpha);
+	    if (unlikely (status))
+		return status;
+
+	    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "/a%d gs\n",
+					 alpha);
+	    surface->current_color_alpha = solid_color->alpha;
+	}
+
+	surface->current_pattern_is_solid_color = TRUE;
+    } else {
+	status = _cairo_pdf_surface_add_alpha (surface, 1.0, &alpha);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_surface_add_pattern (surface, pattern_res);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	/* fill-stroke calls select_pattern twice. Don't save if the
+	 * gstate is already saved. */
+	if (!surface->select_pattern_gstate_saved)
+	    _cairo_output_stream_printf (surface->output, "q ");
+
+	if (is_stroke) {
+	    _cairo_output_stream_printf (surface->output,
+					 "/Pattern CS /p%d SCN ",
+					 pattern_res.id);
+	} else {
+	    _cairo_output_stream_printf (surface->output,
+					 "/Pattern cs /p%d scn ",
+					 pattern_res.id);
+	}
+	_cairo_output_stream_printf (surface->output,
+				     "/a%d gs\n",
+				     alpha);
+	surface->select_pattern_gstate_saved = TRUE;
+	surface->current_pattern_is_solid_color = FALSE;
+    }
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_unselect_pattern (cairo_pdf_surface_t *surface)
+{
+    cairo_int_status_t status;
+
+    if (surface->select_pattern_gstate_saved) {
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output, "Q\n");
+	_cairo_pdf_operators_reset (&surface->pdf_operators);
+	surface->current_pattern_is_solid_color = FALSE;
+    }
+    surface->select_pattern_gstate_saved = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_show_page (void *abstract_surface)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    status = _cairo_array_append (&surface->page_heights, &surface->height);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_array_append (&surface->page_labels, &surface->current_page_label);
+    if (unlikely (status))
+	return status;
+
+    surface->current_page_label = NULL;
+
+    status = _cairo_pdf_interchange_end_page_content (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_close_content_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    status = _cairo_pdf_surface_write_page (surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_pdf_surface_clear (surface);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_pdf_surface_get_extents (void		        *abstract_surface,
+				cairo_rectangle_int_t   *rectangle)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+
+    if (surface->surface_bounded)
+	*rectangle = surface->surface_extents;
+
+    return surface->surface_bounded;
+}
+
+static void
+_cairo_pdf_surface_get_font_options (void                  *abstract_surface,
+				     cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
+    cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
+    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_OFF);
+}
+
+static void
+_cairo_pdf_surface_write_pages (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_resource_t page;
+    int num_pages, i;
+
+    _cairo_pdf_surface_update_object (surface, surface->pages_resource);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Pages\n"
+				 "   /Kids [ ",
+				 surface->pages_resource.id);
+
+    num_pages = _cairo_array_num_elements (&surface->pages);
+    for (i = 0; i < num_pages; i++) {
+	_cairo_array_copy_element (&surface->pages, i, &page);
+	_cairo_output_stream_printf (surface->output, "%d 0 R ", page.id);
+    }
+
+    _cairo_output_stream_printf (surface->output, "]\n");
+    _cairo_output_stream_printf (surface->output, "   /Count %d\n", num_pages);
+
+
+    /* TODO: Figure out which other defaults to be inherited by /Page
+     * objects. */
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+}
+
+cairo_int_status_t
+_cairo_utf8_to_pdf_string (const char *utf8, char **str_out)
+{
+    int i;
+    int len;
+    cairo_bool_t ascii;
+    char *str;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    ascii = TRUE;
+    len = strlen (utf8);
+    for (i = 0; i < len; i++) {
+	unsigned c = utf8[i];
+	if (c < 32 || c > 126 || c == '(' || c == ')' || c == '\\') {
+	    ascii = FALSE;
+	    break;
+	}
+    }
+
+    if (ascii) {
+	str = _cairo_malloc (len + 3);
+	if (str == NULL)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	str[0] = '(';
+	for (i = 0; i < len; i++)
+	    str[i+1] = utf8[i];
+	str[i+1] = ')';
+	str[i+2] = 0;
+    } else {
+	uint16_t *utf16 = NULL;
+	int utf16_len = 0;
+
+	status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &utf16_len);
+	if (unlikely (status))
+	    return status;
+
+	str = _cairo_malloc (utf16_len*4 + 7);
+	if (str == NULL) {
+	    free (utf16);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	strcpy (str, "<FEFF");
+	for (i = 0; i < utf16_len; i++)
+	    snprintf (str + 4*i + 5, 5, "%04X", utf16[i]);
+
+	strcat (str, ">");
+	free (utf16);
+    }
+    *str_out = str;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_unicode_for_glyph (cairo_pdf_surface_t	*surface,
+					   const char 		*utf8)
+{
+    uint16_t *utf16 = NULL;
+    int utf16_len = 0;
+    cairo_int_status_t status;
+    int i;
+
+    if (utf8 && *utf8) {
+	status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &utf16_len);
+	if (unlikely (status == CAIRO_INT_STATUS_INVALID_STRING)) {
+	    utf16 = NULL;
+	    utf16_len = 0;
+	} else if (unlikely (status)) {
+	    return status;
+	}
+    }
+
+    _cairo_output_stream_printf (surface->output, "<");
+    if (utf16 == NULL || utf16_len == 0) {
+	/* According to the "ToUnicode Mapping File Tutorial"
+	 * http://www.adobe.com/devnet/acrobat/pdfs/5411.ToUnicode.pdf
+	 *
+	 * Glyphs that do not map to a Unicode code point must be
+	 * mapped to 0xfffd "REPLACEMENT CHARACTER".
+	 */
+	_cairo_output_stream_printf (surface->output,
+				     "fffd");
+    } else {
+	for (i = 0; i < utf16_len; i++)
+	    _cairo_output_stream_printf (surface->output,
+					 "%04x", (int) (utf16[i]));
+    }
+    _cairo_output_stream_printf (surface->output, ">");
+
+    free (utf16);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Bob Jenkins hash
+ *
+ * Public domain code from:
+ *   http://burtleburtle.net/bob/hash/doobs.html
+ */
+
+#define HASH_MIX(a,b,c) 		\
+{ 					\
+    a -= b; a -= c; a ^= (c>>13);	\
+    b -= c; b -= a; b ^= (a<<8);	\
+    c -= a; c -= b; c ^= (b>>13);	\
+    a -= b; a -= c; a ^= (c>>12);	\
+    b -= c; b -= a; b ^= (a<<16);	\
+    c -= a; c -= b; c ^= (b>>5);	\
+    a -= b; a -= c; a ^= (c>>3);	\
+    b -= c; b -= a; b ^= (a<<10);	\
+    c -= a; c -= b; c ^= (b>>15);	\
+}
+
+static uint32_t
+_hash_data (const unsigned char *data, int length, uint32_t initval)
+{
+    uint32_t a, b, c, len;
+
+    len = length;
+    a = b = 0x9e3779b9;  /* the golden ratio; an arbitrary value */
+    c = initval;         /* the previous hash value */
+
+    while (len >= 12) {
+	a += (data[0] + ((uint32_t)data[1]<<8) + ((uint32_t)data[2]<<16) + ((uint32_t)data[3]<<24));
+	b += (data[4] + ((uint32_t)data[5]<<8) + ((uint32_t)data[6]<<16) + ((uint32_t)data[7]<<24));
+	c += (data[8] + ((uint32_t)data[9]<<8) + ((uint32_t)data[10]<<16)+ ((uint32_t)data[11]<<24));
+	HASH_MIX (a,b,c);
+	data += 12;
+	len -= 12;
+    }
+
+    c += length;
+    switch(len) {
+    case 11: c+= ((uint32_t) data[10] << 24);
+    case 10: c+= ((uint32_t) data[9] << 16);
+    case 9 : c+= ((uint32_t) data[8] << 8);
+    case 8 : b+= ((uint32_t) data[7] << 24);
+    case 7 : b+= ((uint32_t) data[6] << 16);
+    case 6 : b+= ((uint32_t) data[5] << 8);
+    case 5 : b+= data[4];
+    case 4 : a+= ((uint32_t) data[3] << 24);
+    case 3 : a+= ((uint32_t) data[2] << 16);
+    case 2 : a+= ((uint32_t) data[1] << 8);
+    case 1 : a+= data[0];
+    }
+    HASH_MIX (a,b,c);
+
+    return c;
+}
+
+static void
+_create_font_subset_tag (cairo_scaled_font_subset_t	*font_subset,
+			 const char 			*font_name,
+			 char				*tag)
+{
+    uint32_t hash;
+    int i;
+    long numerator;
+    ldiv_t d;
+
+    hash = _hash_data ((unsigned char *) font_name, strlen(font_name), 0);
+    hash = _hash_data ((unsigned char *) (font_subset->glyphs),
+		       font_subset->num_glyphs * sizeof(unsigned long), hash);
+
+    numerator = abs (hash);
+    for (i = 0; i < 6; i++) {
+	d = ldiv (numerator, 26);
+	numerator = d.quot;
+        tag[i] = 'A' + d.rem;
+    }
+    tag[i] = 0;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_to_unicode_stream (cairo_pdf_surface_t		*surface,
+					   cairo_scaled_font_subset_t	*font_subset,
+					   cairo_pdf_resource_t         *stream)
+{
+    unsigned int i, num_bfchar;
+    cairo_int_status_t status;
+
+    stream->id = 0;
+
+    status = _cairo_pdf_surface_open_stream (surface,
+					      NULL,
+					      surface->compress_content,
+					      NULL);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output,
+                                 "/CIDInit /ProcSet findresource begin\n"
+                                 "12 dict begin\n"
+                                 "begincmap\n"
+                                 "/CIDSystemInfo\n"
+                                 "<< /Registry (Adobe)\n"
+                                 "   /Ordering (UCS)\n"
+                                 "   /Supplement 0\n"
+                                 ">> def\n"
+                                 "/CMapName /Adobe-Identity-UCS def\n"
+                                 "/CMapType 2 def\n"
+                                 "1 begincodespacerange\n");
+
+    if (font_subset->is_composite && !font_subset->is_latin) {
+        _cairo_output_stream_printf (surface->output,
+                                     "<0000> <ffff>\n");
+    } else {
+        _cairo_output_stream_printf (surface->output,
+                                     "<00> <ff>\n");
+    }
+
+    _cairo_output_stream_printf (surface->output,
+                                  "endcodespacerange\n");
+
+    if (font_subset->is_scaled) {
+	/* Type 3 fonts include glyph 0 in the subset */
+	num_bfchar = font_subset->num_glyphs;
+
+	/* The CMap specification has a limit of 100 characters per beginbfchar operator */
+	_cairo_output_stream_printf (surface->output,
+				     "%d beginbfchar\n",
+				     num_bfchar > 100 ? 100 : num_bfchar);
+
+	for (i = 0; i < num_bfchar; i++) {
+	    if (i != 0 && i % 100 == 0) {
+		_cairo_output_stream_printf (surface->output,
+					     "endbfchar\n"
+					     "%d beginbfchar\n",
+					     num_bfchar - i > 100 ? 100 : num_bfchar - i);
+	    }
+	    _cairo_output_stream_printf (surface->output, "<%02x> ", i);
+	    status = _cairo_pdf_surface_emit_unicode_for_glyph (surface,
+								font_subset->utf8[i]);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "\n");
+	}
+    } else {
+	/* Other fonts reserve glyph 0 for .notdef. Omit glyph 0 from the /ToUnicode map */
+	num_bfchar = font_subset->num_glyphs - 1;
+
+	/* The CMap specification has a limit of 100 characters per beginbfchar operator */
+	_cairo_output_stream_printf (surface->output,
+				     "%d beginbfchar\n",
+				     num_bfchar > 100 ? 100 : num_bfchar);
+
+	for (i = 0; i < num_bfchar; i++) {
+	    if (i != 0 && i % 100 == 0) {
+		_cairo_output_stream_printf (surface->output,
+					     "endbfchar\n"
+					     "%d beginbfchar\n",
+					     num_bfchar - i > 100 ? 100 : num_bfchar - i);
+	    }
+	    if (font_subset->is_latin)
+		_cairo_output_stream_printf (surface->output, "<%02x> ", font_subset->to_latin_char[i + 1]);
+	    else if (font_subset->is_composite)
+		_cairo_output_stream_printf (surface->output, "<%04x> ", i + 1);
+	    else
+		_cairo_output_stream_printf (surface->output, "<%02x> ", i + 1);
+
+	    status = _cairo_pdf_surface_emit_unicode_for_glyph (surface,
+								font_subset->utf8[i + 1]);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "\n");
+	}
+    }
+
+    _cairo_output_stream_printf (surface->output,
+                                 "endbfchar\n");
+
+    _cairo_output_stream_printf (surface->output,
+                                 "endcmap\n"
+                                 "CMapName currentdict /CMap defineresource pop\n"
+                                 "end\n"
+                                 "end\n");
+
+    *stream = surface->pdf_stream.self;
+    return _cairo_pdf_surface_close_stream (surface);
+}
+
+#define PDF_UNITS_PER_EM 1000
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_cff_font (cairo_pdf_surface_t		*surface,
+                                  cairo_scaled_font_subset_t	*font_subset,
+                                  cairo_cff_subset_t            *subset)
+{
+    cairo_pdf_resource_t stream, descriptor, cidfont_dict;
+    cairo_pdf_resource_t subset_resource, to_unicode_stream;
+    cairo_pdf_font_t font;
+    unsigned int i, last_glyph;
+    cairo_int_status_t status;
+    char tag[10];
+
+    _create_font_subset_tag (font_subset, subset->ps_name, tag);
+
+    subset_resource = _cairo_pdf_surface_get_font_resource (surface,
+							    font_subset->font_id,
+							    font_subset->subset_id);
+    if (subset_resource.id == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_pdf_surface_open_stream (surface,
+					     NULL,
+					     TRUE,
+					     font_subset->is_latin ?
+					     "   /Subtype /Type1C\n" :
+					     "   /Subtype /CIDFontType0C\n");
+    if (unlikely (status))
+	return status;
+
+    stream = surface->pdf_stream.self;
+    _cairo_output_stream_write (surface->output,
+				subset->data, subset->data_length);
+    status = _cairo_pdf_surface_close_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_emit_to_unicode_stream (surface,
+	                                                font_subset,
+							&to_unicode_stream);
+    if (_cairo_int_status_is_error (status))
+	return status;
+
+    descriptor = _cairo_pdf_surface_new_object (surface);
+    if (descriptor.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /FontDescriptor\n"
+				 "   /FontName /%s+%s\n",
+				 descriptor.id,
+				 tag,
+				 subset->ps_name);
+
+    if (subset->family_name_utf8) {
+	char *pdf_str;
+
+	status = _cairo_utf8_to_pdf_string (subset->family_name_utf8, &pdf_str);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /FontFamily %s\n",
+					 pdf_str);
+	    free (pdf_str);
+	} else if (status != CAIRO_INT_STATUS_INVALID_STRING) {
+	    return status;
+	}
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Flags 4\n"
+				 "   /FontBBox [ %ld %ld %ld %ld ]\n"
+				 "   /ItalicAngle 0\n"
+				 "   /Ascent %ld\n"
+				 "   /Descent %ld\n"
+				 "   /CapHeight %ld\n"
+				 "   /StemV 80\n"
+				 "   /StemH 80\n"
+				 "   /FontFile3 %u 0 R\n"
+				 ">>\n"
+				 "endobj\n",
+				 (long)(subset->x_min*PDF_UNITS_PER_EM),
+				 (long)(subset->y_min*PDF_UNITS_PER_EM),
+				 (long)(subset->x_max*PDF_UNITS_PER_EM),
+				 (long)(subset->y_max*PDF_UNITS_PER_EM),
+				 (long)(subset->ascent*PDF_UNITS_PER_EM),
+				 (long)(subset->descent*PDF_UNITS_PER_EM),
+				 (long)(subset->y_max*PDF_UNITS_PER_EM),
+				 stream.id);
+
+    if (font_subset->is_latin) {
+	/* find last glyph used */
+	for (i = 255; i >= 32; i--)
+	    if (font_subset->latin_to_subset_glyph_index[i] > 0)
+		break;
+
+	last_glyph = i;
+	_cairo_pdf_surface_update_object (surface, subset_resource);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Font\n"
+				     "   /Subtype /Type1\n"
+				     "   /BaseFont /%s+%s\n"
+				     "   /FirstChar 32\n"
+				     "   /LastChar %d\n"
+				     "   /FontDescriptor %d 0 R\n"
+				     "   /Encoding /WinAnsiEncoding\n"
+				     "   /Widths [",
+				     subset_resource.id,
+				     tag,
+				     subset->ps_name,
+				     last_glyph,
+				     descriptor.id);
+
+	for (i = 32; i < last_glyph + 1; i++) {
+	    int glyph = font_subset->latin_to_subset_glyph_index[i];
+	    if (glyph > 0) {
+		_cairo_output_stream_printf (surface->output,
+					     " %ld",
+					     (long)(subset->widths[glyph]*PDF_UNITS_PER_EM));
+	    } else {
+		_cairo_output_stream_printf (surface->output, " 0");
+	    }
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     " ]\n");
+
+	if (to_unicode_stream.id != 0)
+	    _cairo_output_stream_printf (surface->output,
+					 "    /ToUnicode %d 0 R\n",
+					 to_unicode_stream.id);
+
+	_cairo_output_stream_printf (surface->output,
+				     ">>\n"
+				     "endobj\n");
+    } else {
+	cidfont_dict = _cairo_pdf_surface_new_object (surface);
+	if (cidfont_dict.id == 0)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Font\n"
+				     "   /Subtype /CIDFontType0\n"
+				     "   /BaseFont /%s+%s\n"
+				     "   /CIDSystemInfo\n"
+				     "   << /Registry (Adobe)\n"
+				     "      /Ordering (Identity)\n"
+				     "      /Supplement 0\n"
+				     "   >>\n"
+				     "   /FontDescriptor %d 0 R\n"
+				     "   /W [0 [",
+				     cidfont_dict.id,
+				     tag,
+				     subset->ps_name,
+				     descriptor.id);
+
+	for (i = 0; i < font_subset->num_glyphs; i++)
+	    _cairo_output_stream_printf (surface->output,
+					 " %ld",
+					 (long)(subset->widths[i]*PDF_UNITS_PER_EM));
+
+	_cairo_output_stream_printf (surface->output,
+				     " ]]\n"
+				     ">>\n"
+				     "endobj\n");
+
+	_cairo_pdf_surface_update_object (surface, subset_resource);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Font\n"
+				     "   /Subtype /Type0\n"
+				     "   /BaseFont /%s+%s\n"
+				     "   /Encoding /Identity-H\n"
+				     "   /DescendantFonts [ %d 0 R]\n",
+				     subset_resource.id,
+				     tag,
+				     subset->ps_name,
+				     cidfont_dict.id);
+
+	if (to_unicode_stream.id != 0)
+	    _cairo_output_stream_printf (surface->output,
+					 "   /ToUnicode %d 0 R\n",
+					 to_unicode_stream.id);
+
+	_cairo_output_stream_printf (surface->output,
+				     ">>\n"
+				     "endobj\n");
+    }
+
+    font.font_id = font_subset->font_id;
+    font.subset_id = font_subset->subset_id;
+    font.subset_resource = subset_resource;
+    status = _cairo_array_append (&surface->fonts, &font);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_cff_font_subset (cairo_pdf_surface_t	     *surface,
+                                         cairo_scaled_font_subset_t  *font_subset)
+{
+    cairo_int_status_t status;
+    cairo_cff_subset_t subset;
+    char name[64];
+
+    snprintf (name, sizeof name, "CairoFont-%d-%d",
+              font_subset->font_id, font_subset->subset_id);
+    status = _cairo_cff_subset_init (&subset, name, font_subset);
+    if (unlikely (status))
+        return status;
+
+    status = _cairo_pdf_surface_emit_cff_font (surface, font_subset, &subset);
+
+    _cairo_cff_subset_fini (&subset);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_cff_fallback_font (cairo_pdf_surface_t	       *surface,
+                                           cairo_scaled_font_subset_t  *font_subset)
+{
+    cairo_int_status_t status;
+    cairo_cff_subset_t subset;
+    char name[64];
+
+    /* CFF fallback subsetting does not work with 8-bit glyphs unless
+     * they are a latin subset */
+    if (!font_subset->is_composite && !font_subset->is_latin)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    snprintf (name, sizeof name, "CairoFont-%d-%d",
+              font_subset->font_id, font_subset->subset_id);
+    status = _cairo_cff_fallback_init (&subset, name, font_subset);
+    if (unlikely (status))
+        return status;
+
+    status = _cairo_pdf_surface_emit_cff_font (surface, font_subset, &subset);
+
+    _cairo_cff_fallback_fini (&subset);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_type1_font (cairo_pdf_surface_t		*surface,
+                                    cairo_scaled_font_subset_t	*font_subset,
+                                    cairo_type1_subset_t        *subset)
+{
+    cairo_pdf_resource_t stream, descriptor, subset_resource, to_unicode_stream;
+    cairo_pdf_font_t font;
+    cairo_int_status_t status;
+    unsigned long length;
+    unsigned int i, last_glyph;
+    char tag[10];
+
+    _create_font_subset_tag (font_subset, subset->base_font, tag);
+
+    subset_resource = _cairo_pdf_surface_get_font_resource (surface,
+							    font_subset->font_id,
+							    font_subset->subset_id);
+    if (subset_resource.id == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    length = subset->header_length + subset->data_length + subset->trailer_length;
+    status = _cairo_pdf_surface_open_stream (surface,
+					     NULL,
+					     TRUE,
+					     "   /Length1 %lu\n"
+					     "   /Length2 %lu\n"
+					     "   /Length3 %lu\n",
+					     subset->header_length,
+					     subset->data_length,
+					     subset->trailer_length);
+    if (unlikely (status))
+	return status;
+
+    stream = surface->pdf_stream.self;
+    _cairo_output_stream_write (surface->output, subset->data, length);
+    status = _cairo_pdf_surface_close_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_emit_to_unicode_stream (surface,
+	                                                font_subset,
+							&to_unicode_stream);
+    if (_cairo_int_status_is_error (status))
+	return status;
+
+    last_glyph = font_subset->num_glyphs - 1;
+    if (font_subset->is_latin) {
+	/* find last glyph used */
+	for (i = 255; i >= 32; i--)
+	    if (font_subset->latin_to_subset_glyph_index[i] > 0)
+		break;
+
+	last_glyph = i;
+    }
+
+    descriptor = _cairo_pdf_surface_new_object (surface);
+    if (descriptor.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /FontDescriptor\n"
+				 "   /FontName /%s+%s\n"
+				 "   /Flags 4\n"
+				 "   /FontBBox [ %ld %ld %ld %ld ]\n"
+				 "   /ItalicAngle 0\n"
+				 "   /Ascent %ld\n"
+				 "   /Descent %ld\n"
+				 "   /CapHeight %ld\n"
+				 "   /StemV 80\n"
+				 "   /StemH 80\n"
+				 "   /FontFile %u 0 R\n"
+				 ">>\n"
+				 "endobj\n",
+				 descriptor.id,
+				 tag,
+				 subset->base_font,
+				 (long)(subset->x_min*PDF_UNITS_PER_EM),
+				 (long)(subset->y_min*PDF_UNITS_PER_EM),
+				 (long)(subset->x_max*PDF_UNITS_PER_EM),
+				 (long)(subset->y_max*PDF_UNITS_PER_EM),
+				 (long)(subset->ascent*PDF_UNITS_PER_EM),
+				 (long)(subset->descent*PDF_UNITS_PER_EM),
+				 (long)(subset->y_max*PDF_UNITS_PER_EM),
+				 stream.id);
+
+    _cairo_pdf_surface_update_object (surface, subset_resource);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Font\n"
+				 "   /Subtype /Type1\n"
+				 "   /BaseFont /%s+%s\n"
+				 "   /FirstChar %d\n"
+				 "   /LastChar %d\n"
+				 "   /FontDescriptor %d 0 R\n",
+				 subset_resource.id,
+				 tag,
+				 subset->base_font,
+				 font_subset->is_latin ? 32 : 0,
+				 last_glyph,
+				 descriptor.id);
+
+    if (font_subset->is_latin)
+	_cairo_output_stream_printf (surface->output, "   /Encoding /WinAnsiEncoding\n");
+
+    _cairo_output_stream_printf (surface->output, "   /Widths [");
+    if (font_subset->is_latin) {
+	for (i = 32; i < last_glyph + 1; i++) {
+	    int glyph = font_subset->latin_to_subset_glyph_index[i];
+	    if (glyph > 0) {
+		_cairo_output_stream_printf (surface->output,
+					     " %ld",
+					     (long)(subset->widths[glyph]*PDF_UNITS_PER_EM));
+	    } else {
+		_cairo_output_stream_printf (surface->output, " 0");
+	    }
+	}
+    } else {
+	for (i = 0; i < font_subset->num_glyphs; i++)
+	    _cairo_output_stream_printf (surface->output,
+					 " %ld",
+					 (long)(subset->widths[i]*PDF_UNITS_PER_EM));
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 " ]\n");
+
+    if (to_unicode_stream.id != 0)
+        _cairo_output_stream_printf (surface->output,
+                                     "    /ToUnicode %d 0 R\n",
+                                     to_unicode_stream.id);
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    font.font_id = font_subset->font_id;
+    font.subset_id = font_subset->subset_id;
+    font.subset_resource = subset_resource;
+    return _cairo_array_append (&surface->fonts, &font);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_type1_font_subset (cairo_pdf_surface_t		*surface,
+					   cairo_scaled_font_subset_t	*font_subset)
+{
+    cairo_int_status_t status;
+    cairo_type1_subset_t subset;
+    char name[64];
+
+    /* 16-bit glyphs not compatible with Type 1 fonts */
+    if (font_subset->is_composite && !font_subset->is_latin)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    snprintf (name, sizeof name, "CairoFont-%d-%d",
+	      font_subset->font_id, font_subset->subset_id);
+    status = _cairo_type1_subset_init (&subset, name, font_subset, FALSE);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_emit_type1_font (surface, font_subset, &subset);
+
+    _cairo_type1_subset_fini (&subset);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_type1_fallback_font (cairo_pdf_surface_t	*surface,
+                                             cairo_scaled_font_subset_t	*font_subset)
+{
+    cairo_int_status_t status;
+    cairo_type1_subset_t subset;
+    char name[64];
+
+    /* 16-bit glyphs not compatible with Type 1 fonts */
+    if (font_subset->is_composite && !font_subset->is_latin)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    snprintf (name, sizeof name, "CairoFont-%d-%d",
+	      font_subset->font_id, font_subset->subset_id);
+    status = _cairo_type1_fallback_init_binary (&subset, name, font_subset);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_emit_type1_font (surface, font_subset, &subset);
+
+    _cairo_type1_fallback_fini (&subset);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_truetype_font_subset (cairo_pdf_surface_t		*surface,
+					      cairo_scaled_font_subset_t	*font_subset)
+{
+    cairo_pdf_resource_t stream, descriptor, cidfont_dict;
+    cairo_pdf_resource_t subset_resource, to_unicode_stream;
+    cairo_int_status_t status;
+    cairo_pdf_font_t font;
+    cairo_truetype_subset_t subset;
+    unsigned int i, last_glyph;
+    char tag[10];
+
+    subset_resource = _cairo_pdf_surface_get_font_resource (surface,
+							    font_subset->font_id,
+							    font_subset->subset_id);
+    if (subset_resource.id == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_truetype_subset_init_pdf (&subset, font_subset);
+    if (unlikely (status))
+	return status;
+
+    _create_font_subset_tag (font_subset, subset.ps_name, tag);
+
+    status = _cairo_pdf_surface_open_stream (surface,
+					     NULL,
+					     TRUE,
+					     "   /Length1 %lu\n",
+					     subset.data_length);
+    if (unlikely (status)) {
+	_cairo_truetype_subset_fini (&subset);
+	return status;
+    }
+
+    stream = surface->pdf_stream.self;
+    _cairo_output_stream_write (surface->output,
+				subset.data, subset.data_length);
+    status = _cairo_pdf_surface_close_stream (surface);
+    if (unlikely (status)) {
+	_cairo_truetype_subset_fini (&subset);
+	return status;
+    }
+
+    status = _cairo_pdf_surface_emit_to_unicode_stream (surface,
+	                                                font_subset,
+							&to_unicode_stream);
+    if (_cairo_int_status_is_error (status)) {
+	_cairo_truetype_subset_fini (&subset);
+	return status;
+    }
+
+    descriptor = _cairo_pdf_surface_new_object (surface);
+    if (descriptor.id == 0) {
+	_cairo_truetype_subset_fini (&subset);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /FontDescriptor\n"
+				 "   /FontName /%s+%s\n",
+				 descriptor.id,
+				 tag,
+				 subset.ps_name);
+
+    if (subset.family_name_utf8) {
+	char *pdf_str;
+
+	status = _cairo_utf8_to_pdf_string (subset.family_name_utf8, &pdf_str);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /FontFamily %s\n",
+					 pdf_str);
+	    free (pdf_str);
+	} else if (status != CAIRO_INT_STATUS_INVALID_STRING) {
+	    return status;
+	}
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Flags %d\n"
+				 "   /FontBBox [ %ld %ld %ld %ld ]\n"
+				 "   /ItalicAngle 0\n"
+				 "   /Ascent %ld\n"
+				 "   /Descent %ld\n"
+				 "   /CapHeight %ld\n"
+				 "   /StemV 80\n"
+				 "   /StemH 80\n"
+				 "   /FontFile2 %u 0 R\n"
+				 ">>\n"
+				 "endobj\n",
+				 font_subset->is_latin ? 32 : 4,
+				 (long)(subset.x_min*PDF_UNITS_PER_EM),
+				 (long)(subset.y_min*PDF_UNITS_PER_EM),
+                                 (long)(subset.x_max*PDF_UNITS_PER_EM),
+				 (long)(subset.y_max*PDF_UNITS_PER_EM),
+				 (long)(subset.ascent*PDF_UNITS_PER_EM),
+				 (long)(subset.descent*PDF_UNITS_PER_EM),
+				 (long)(subset.y_max*PDF_UNITS_PER_EM),
+				 stream.id);
+
+    if (font_subset->is_latin) {
+	/* find last glyph used */
+	for (i = 255; i >= 32; i--)
+	    if (font_subset->latin_to_subset_glyph_index[i] > 0)
+		break;
+
+	last_glyph = i;
+	_cairo_pdf_surface_update_object (surface, subset_resource);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Font\n"
+				     "   /Subtype /TrueType\n"
+				     "   /BaseFont /%s+%s\n"
+				     "   /FirstChar 32\n"
+				     "   /LastChar %d\n"
+				     "   /FontDescriptor %d 0 R\n"
+				     "   /Encoding /WinAnsiEncoding\n"
+				     "   /Widths [",
+				     subset_resource.id,
+				     tag,
+				     subset.ps_name,
+				     last_glyph,
+				     descriptor.id);
+
+	for (i = 32; i < last_glyph + 1; i++) {
+	    int glyph = font_subset->latin_to_subset_glyph_index[i];
+	    if (glyph > 0) {
+		_cairo_output_stream_printf (surface->output,
+					     " %ld",
+					     (long)(subset.widths[glyph]*PDF_UNITS_PER_EM));
+	    } else {
+		_cairo_output_stream_printf (surface->output, " 0");
+	    }
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     " ]\n");
+
+	if (to_unicode_stream.id != 0)
+	    _cairo_output_stream_printf (surface->output,
+					 "    /ToUnicode %d 0 R\n",
+					 to_unicode_stream.id);
+
+	_cairo_output_stream_printf (surface->output,
+				     ">>\n"
+				     "endobj\n");
+    } else {
+	cidfont_dict = _cairo_pdf_surface_new_object (surface);
+	if (cidfont_dict.id == 0) {
+	    _cairo_truetype_subset_fini (&subset);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Font\n"
+				     "   /Subtype /CIDFontType2\n"
+				     "   /BaseFont /%s+%s\n"
+				     "   /CIDSystemInfo\n"
+				     "   << /Registry (Adobe)\n"
+				     "      /Ordering (Identity)\n"
+				     "      /Supplement 0\n"
+				     "   >>\n"
+				     "   /FontDescriptor %d 0 R\n"
+				     "   /W [0 [",
+				     cidfont_dict.id,
+				     tag,
+				     subset.ps_name,
+				     descriptor.id);
+
+	for (i = 0; i < font_subset->num_glyphs; i++)
+	    _cairo_output_stream_printf (surface->output,
+					 " %ld",
+					 (long)(subset.widths[i]*PDF_UNITS_PER_EM));
+
+	_cairo_output_stream_printf (surface->output,
+				     " ]]\n"
+				     ">>\n"
+				     "endobj\n");
+
+	_cairo_pdf_surface_update_object (surface, subset_resource);
+	_cairo_output_stream_printf (surface->output,
+				     "%d 0 obj\n"
+				     "<< /Type /Font\n"
+				     "   /Subtype /Type0\n"
+				     "   /BaseFont /%s+%s\n"
+				     "   /Encoding /Identity-H\n"
+				     "   /DescendantFonts [ %d 0 R]\n",
+				     subset_resource.id,
+				     tag,
+				     subset.ps_name,
+				     cidfont_dict.id);
+
+	if (to_unicode_stream.id != 0)
+	    _cairo_output_stream_printf (surface->output,
+					 "   /ToUnicode %d 0 R\n",
+					 to_unicode_stream.id);
+
+	_cairo_output_stream_printf (surface->output,
+				     ">>\n"
+				     "endobj\n");
+    }
+
+    font.font_id = font_subset->font_id;
+    font.subset_id = font_subset->subset_id;
+    font.subset_resource = subset_resource;
+    status = _cairo_array_append (&surface->fonts, &font);
+
+    _cairo_truetype_subset_fini (&subset);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_emit_imagemask (cairo_image_surface_t *image,
+			     cairo_output_stream_t *stream)
+{
+    uint8_t *byte, output_byte;
+    int row, col, num_cols;
+
+    /* The only image type supported by Type 3 fonts are 1-bit image
+     * masks */
+    assert (image->format == CAIRO_FORMAT_A1);
+
+    _cairo_output_stream_printf (stream,
+				 "BI\n"
+				 "/IM true\n"
+				 "/W %d\n"
+				 "/H %d\n"
+				 "/BPC 1\n"
+				 "/D [1 0]\n",
+				 image->width,
+				 image->height);
+
+    _cairo_output_stream_printf (stream,
+				 "ID ");
+
+    num_cols = (image->width + 7) / 8;
+    for (row = 0; row < image->height; row++) {
+	byte = image->data + row * image->stride;
+	for (col = 0; col < num_cols; col++) {
+	    output_byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (*byte);
+	    _cairo_output_stream_write (stream, &output_byte, 1);
+	    byte++;
+	}
+    }
+
+    _cairo_output_stream_printf (stream,
+				 "\nEI\n");
+
+    return _cairo_output_stream_get_status (stream);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_analyze_user_font_subset (cairo_scaled_font_subset_t *font_subset,
+					     void		        *closure)
+{
+    cairo_pdf_surface_t *surface = closure;
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+    cairo_int_status_t status2;
+    unsigned int i;
+    cairo_surface_t *type3_surface;
+    cairo_output_stream_t *null_stream;
+
+    null_stream = _cairo_null_stream_create ();
+    type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
+						       null_stream,
+						       _cairo_pdf_emit_imagemask,
+						       surface->font_subsets,
+						       FALSE);
+    if (unlikely (type3_surface->status)) {
+	status2 = _cairo_output_stream_destroy (null_stream);
+	return type3_surface->status;
+    }
+
+    _cairo_type3_glyph_surface_set_font_subsets_callback (type3_surface,
+							  _cairo_pdf_surface_add_font,
+							  surface);
+
+    for (i = 0; i < font_subset->num_glyphs; i++) {
+	status = _cairo_type3_glyph_surface_analyze_glyph (type3_surface,
+							   font_subset->glyphs[i]);
+	if (unlikely (status))
+	    break;
+    }
+
+    cairo_surface_destroy (type3_surface);
+    status2 = _cairo_output_stream_destroy (null_stream);
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_type3_font_subset (cairo_pdf_surface_t		*surface,
+					   cairo_scaled_font_subset_t	*font_subset)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_pdf_resource_t *glyphs, encoding, char_procs, subset_resource, to_unicode_stream;
+    cairo_pdf_font_t font;
+    double *widths;
+    unsigned int i;
+    cairo_box_t font_bbox = {{0,0},{0,0}};
+    cairo_box_t bbox = {{0,0},{0,0}};
+    cairo_surface_t *type3_surface;
+
+    if (font_subset->num_glyphs == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    subset_resource = _cairo_pdf_surface_get_font_resource (surface,
+							    font_subset->font_id,
+							    font_subset->subset_id);
+    if (subset_resource.id == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    glyphs = _cairo_malloc_ab (font_subset->num_glyphs, sizeof (cairo_pdf_resource_t));
+    if (unlikely (glyphs == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    widths = _cairo_malloc_ab (font_subset->num_glyphs, sizeof (double));
+    if (unlikely (widths == NULL)) {
+        free (glyphs);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_pdf_group_resources_clear (&surface->resources);
+    type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
+						       NULL,
+						       _cairo_pdf_emit_imagemask,
+						       surface->font_subsets,
+						       FALSE);
+    if (unlikely (type3_surface->status)) {
+        free (glyphs);
+        free (widths);
+	return type3_surface->status;
+    }
+
+    _cairo_type3_glyph_surface_set_font_subsets_callback (type3_surface,
+							  _cairo_pdf_surface_add_font,
+							  surface);
+
+    for (i = 0; i < font_subset->num_glyphs; i++) {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 NULL,
+						 surface->compress_content,
+						 NULL);
+	if (unlikely (status))
+	    break;
+
+	glyphs[i] = surface->pdf_stream.self;
+	status = _cairo_type3_glyph_surface_emit_glyph (type3_surface,
+							surface->output,
+							font_subset->glyphs[i],
+							&bbox,
+							&widths[i]);
+	if (unlikely (status))
+	    break;
+
+	status = _cairo_pdf_surface_close_stream (surface);
+	if (unlikely (status))
+	    break;
+
+        if (i == 0) {
+            font_bbox.p1.x = bbox.p1.x;
+            font_bbox.p1.y = bbox.p1.y;
+            font_bbox.p2.x = bbox.p2.x;
+            font_bbox.p2.y = bbox.p2.y;
+        } else {
+            if (bbox.p1.x < font_bbox.p1.x)
+                font_bbox.p1.x = bbox.p1.x;
+            if (bbox.p1.y < font_bbox.p1.y)
+                font_bbox.p1.y = bbox.p1.y;
+            if (bbox.p2.x > font_bbox.p2.x)
+                font_bbox.p2.x = bbox.p2.x;
+            if (bbox.p2.y > font_bbox.p2.y)
+                font_bbox.p2.y = bbox.p2.y;
+        }
+    }
+    cairo_surface_destroy (type3_surface);
+    if (unlikely (status)) {
+	free (glyphs);
+	free (widths);
+	return status;
+    }
+
+    encoding = _cairo_pdf_surface_new_object (surface);
+    if (encoding.id == 0) {
+	free (glyphs);
+	free (widths);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Encoding\n"
+				 "   /Differences [0", encoding.id);
+    for (i = 0; i < font_subset->num_glyphs; i++)
+	_cairo_output_stream_printf (surface->output,
+				     " /%d", i);
+    _cairo_output_stream_printf (surface->output,
+				 "]\n"
+				 ">>\n"
+				 "endobj\n");
+
+    char_procs = _cairo_pdf_surface_new_object (surface);
+    if (char_procs.id == 0) {
+	free (glyphs);
+	free (widths);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<<\n", char_procs.id);
+    for (i = 0; i < font_subset->num_glyphs; i++)
+	_cairo_output_stream_printf (surface->output,
+				     " /%d %d 0 R\n",
+				     i, glyphs[i].id);
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    free (glyphs);
+
+    status = _cairo_pdf_surface_emit_to_unicode_stream (surface,
+	                                                font_subset,
+							&to_unicode_stream);
+    if (_cairo_int_status_is_error (status)) {
+	free (widths);
+	return status;
+    }
+
+    _cairo_pdf_surface_update_object (surface, subset_resource);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Font\n"
+				 "   /Subtype /Type3\n"
+				 "   /FontBBox [%f %f %f %f]\n"
+				 "   /FontMatrix [ 1 0 0 -1 0 0 ]\n"
+				 "   /Encoding %d 0 R\n"
+				 "   /CharProcs %d 0 R\n"
+				 "   /FirstChar 0\n"
+				 "   /LastChar %d\n",
+				 subset_resource.id,
+				 _cairo_fixed_to_double (font_bbox.p1.x),
+				 _cairo_fixed_to_double (font_bbox.p1.y),
+				 _cairo_fixed_to_double (font_bbox.p2.x),
+				 _cairo_fixed_to_double (font_bbox.p2.y),
+				 encoding.id,
+				 char_procs.id,
+				 font_subset->num_glyphs - 1);
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Widths [");
+    for (i = 0; i < font_subset->num_glyphs; i++)
+	_cairo_output_stream_printf (surface->output, " %f", widths[i]);
+    _cairo_output_stream_printf (surface->output,
+				 "]\n");
+    free (widths);
+
+    _cairo_output_stream_printf (surface->output,
+				 "   /Resources\n");
+    _cairo_pdf_surface_emit_group_resources (surface, &surface->resources);
+
+    if (to_unicode_stream.id != 0)
+        _cairo_output_stream_printf (surface->output,
+                                     "    /ToUnicode %d 0 R\n",
+                                     to_unicode_stream.id);
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    font.font_id = font_subset->font_id;
+    font.subset_id = font_subset->subset_id;
+    font.subset_resource = subset_resource;
+    return _cairo_array_append (&surface->fonts, &font);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_unscaled_font_subset (cairo_scaled_font_subset_t *font_subset,
+                                              void			 *closure)
+{
+    cairo_pdf_surface_t *surface = closure;
+    cairo_int_status_t status;
+
+    status = _cairo_pdf_surface_emit_cff_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_pdf_surface_emit_truetype_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_pdf_surface_emit_type1_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_pdf_surface_emit_cff_fallback_font (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_pdf_surface_emit_type1_fallback_font (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_scaled_font_subset (cairo_scaled_font_subset_t *font_subset,
+                                            void		       *closure)
+{
+    cairo_pdf_surface_t *surface = closure;
+    cairo_int_status_t status;
+
+    status = _cairo_pdf_surface_emit_type3_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_font_subsets (cairo_pdf_surface_t *surface)
+{
+    cairo_int_status_t status;
+
+    status = _cairo_scaled_font_subsets_foreach_user (surface->font_subsets,
+						      _cairo_pdf_surface_analyze_user_font_subset,
+						      surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _cairo_scaled_font_subsets_foreach_unscaled (surface->font_subsets,
+                                                          _cairo_pdf_surface_emit_unscaled_font_subset,
+                                                          surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _cairo_scaled_font_subsets_foreach_scaled (surface->font_subsets,
+                                                        _cairo_pdf_surface_emit_scaled_font_subset,
+                                                        surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _cairo_scaled_font_subsets_foreach_user (surface->font_subsets,
+						      _cairo_pdf_surface_emit_scaled_font_subset,
+						      surface);
+
+BAIL:
+    _cairo_scaled_font_subsets_destroy (surface->font_subsets);
+    surface->font_subsets = NULL;
+
+    return status;
+}
+
+static cairo_pdf_resource_t
+_cairo_pdf_surface_write_catalog (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_resource_t catalog;
+
+    catalog = _cairo_pdf_surface_new_object (surface);
+    if (catalog.id == 0)
+	return catalog;
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Catalog\n"
+				 "   /Pages %d 0 R\n",
+				 catalog.id,
+				 surface->pages_resource.id);
+
+    if (surface->struct_tree_root.id != 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /StructTreeRoot %d 0 R\n",
+				     surface->struct_tree_root.id);
+	if (surface->tagged) {
+	    _cairo_output_stream_printf (surface->output,
+					 "   /MarkInfo << /Marked true >>\n");
+	}
+    }
+
+    if (surface->outlines_dict_res.id != 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Outlines %d 0 R\n",
+				     surface->outlines_dict_res.id);
+    }
+
+    if (surface->page_labels_res.id != 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /PageLabels %d 0 R\n",
+				     surface->page_labels_res.id);
+    }
+
+    if (surface->names_dict_res.id != 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Names %d 0 R\n",
+				     surface->names_dict_res.id);
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    return catalog;
+}
+
+static long
+_cairo_pdf_surface_write_xref (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_object_t *object;
+    int num_objects, i;
+    long offset;
+    char buffer[11];
+
+    num_objects = _cairo_array_num_elements (&surface->objects);
+
+    offset = _cairo_output_stream_get_position (surface->output);
+    _cairo_output_stream_printf (surface->output,
+				 "xref\n"
+				 "%d %d\n",
+				 0, num_objects + 1);
+
+    _cairo_output_stream_printf (surface->output,
+				 "0000000000 65535 f \n");
+    for (i = 0; i < num_objects; i++) {
+	object = _cairo_array_index (&surface->objects, i);
+	snprintf (buffer, sizeof buffer, "%010ld", object->offset);
+	_cairo_output_stream_printf (surface->output,
+				     "%s 00000 n \n", buffer);
+    }
+
+    return offset;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_mask_group (cairo_pdf_surface_t	*surface,
+				     cairo_pdf_smask_group_t	*group)
+{
+    cairo_pdf_resource_t mask_group;
+    cairo_pdf_resource_t smask;
+    cairo_pdf_smask_group_t *smask_group;
+    cairo_pdf_resource_t pattern_res, gstate_res;
+    cairo_int_status_t status;
+    cairo_box_double_t bbox;
+
+    /* Create mask group */
+    _get_bbox_from_extents (&group->extents, &bbox);
+    status = _cairo_pdf_surface_open_group (surface, &bbox, NULL);
+    if (unlikely (status))
+	return status;
+
+    if (_can_paint_pattern (group->mask)) {
+	_cairo_output_stream_printf (surface->output, "q\n");
+	status = _cairo_pdf_surface_paint_pattern (surface,
+						   CAIRO_OPERATOR_OVER,
+						   group->mask,
+						   &group->extents,
+						   1.0, /* alpha */
+						   FALSE); /* mask */
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output, "Q\n");
+    } else {
+	pattern_res.id = 0;
+	gstate_res.id = 0;
+	status = _cairo_pdf_surface_add_pdf_pattern (surface, group->mask,
+						     CAIRO_OPERATOR_OVER,
+						     NULL,
+						     &pattern_res, &gstate_res);
+	if (unlikely (status))
+	    return status;
+
+	if (gstate_res.id != 0) {
+	    smask_group = _cairo_pdf_surface_create_smask_group (surface, &group->extents);
+	    if (unlikely (smask_group == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    smask_group->width = group->width;
+	    smask_group->height = group->height;
+	    smask_group->operation = PDF_PAINT;
+	    smask_group->source = cairo_pattern_reference (group->mask);
+	    smask_group->source_res = pattern_res;
+	    status = _cairo_pdf_surface_add_smask_group (surface, smask_group);
+	    if (unlikely (status)) {
+		_cairo_pdf_smask_group_destroy (smask_group);
+		return status;
+	    }
+
+	    status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	    if (unlikely (status))
+		return status;
+
+	    status = _cairo_pdf_surface_add_xobject (surface, smask_group->group_res);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "q /s%d gs /x%d Do Q\n",
+					 gstate_res.id,
+					 smask_group->group_res.id);
+	} else {
+	    status = _cairo_pdf_surface_select_pattern (surface, group->mask, pattern_res, FALSE);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "%f %f %f %f re f\n",
+					 bbox.p1.x,
+					 bbox.p1.y,
+					 bbox.p2.x - bbox.p1.x,
+					 bbox.p2.y - bbox.p1.y);
+
+	    status = _cairo_pdf_surface_unselect_pattern (surface);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    status = _cairo_pdf_surface_close_group (surface, &mask_group);
+    if (unlikely (status))
+	return status;
+
+    /* Create source group */
+    status = _cairo_pdf_surface_open_group (surface, &bbox, &group->source_res);
+    if (unlikely (status))
+	return status;
+
+    if (_can_paint_pattern (group->source)) {
+	_cairo_output_stream_printf (surface->output, "q\n");
+	status = _cairo_pdf_surface_paint_pattern (surface,
+						   CAIRO_OPERATOR_OVER,
+						   group->source,
+						   &group->extents,
+						   1.0, /* alpha */
+						   FALSE); /* mask */
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output, "Q\n");
+    } else {
+	pattern_res.id = 0;
+	gstate_res.id = 0;
+	status = _cairo_pdf_surface_add_pdf_pattern (surface, group->source,
+						     CAIRO_OPERATOR_OVER,
+						     NULL,
+						     &pattern_res, &gstate_res);
+	if (unlikely (status))
+	    return status;
+
+	if (gstate_res.id != 0) {
+	    smask_group = _cairo_pdf_surface_create_smask_group (surface, &group->extents);
+	    if (unlikely (smask_group == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    smask_group->operation = PDF_PAINT;
+	    smask_group->source = cairo_pattern_reference (group->source);
+	    smask_group->source_res = pattern_res;
+	    status = _cairo_pdf_surface_add_smask_group (surface, smask_group);
+	    if (unlikely (status)) {
+		_cairo_pdf_smask_group_destroy (smask_group);
+		return status;
+	    }
+
+	    status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	    if (unlikely (status))
+		return status;
+
+	    status = _cairo_pdf_surface_add_xobject (surface, smask_group->group_res);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "q /s%d gs /x%d Do Q\n",
+					 gstate_res.id,
+					 smask_group->group_res.id);
+	} else {
+	    status = _cairo_pdf_surface_select_pattern (surface, group->source, pattern_res, FALSE);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (surface->output,
+					 "%f %f %f %f re f\n",
+					 bbox.p1.x,
+					 bbox.p1.y,
+					 bbox.p2.x - bbox.p1.x,
+					 bbox.p2.y - bbox.p1.y);
+
+	    status = _cairo_pdf_surface_unselect_pattern (surface);
+	    if (unlikely (status))
+		return status;
+	}
+    }
+
+    status = _cairo_pdf_surface_close_group (surface, NULL);
+    if (unlikely (status))
+	return status;
+
+    /* Create an smask based on the alpha component of mask_group */
+    smask = _cairo_pdf_surface_new_object (surface);
+    if (smask.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Mask\n"
+				 "   /S /Alpha\n"
+				 "   /G %d 0 R\n"
+				 ">>\n"
+				 "endobj\n",
+				 smask.id,
+				 mask_group.id);
+
+    /* Create a GState that uses the smask */
+    _cairo_pdf_surface_update_object (surface, group->group_res);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /ExtGState\n"
+				 "   /SMask %d 0 R\n"
+				 "   /ca 1\n"
+				 "   /CA 1\n"
+				 "   /AIS false\n"
+				 ">>\n"
+				 "endobj\n",
+				 group->group_res.id,
+				 smask.id);
+
+    return _cairo_output_stream_get_status (surface->output);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_smask_group (cairo_pdf_surface_t     *surface,
+				      cairo_pdf_smask_group_t *group)
+{
+    double old_width, old_height;
+    cairo_bool_t old_in_xobject;
+    cairo_int_status_t status;
+    cairo_box_double_t bbox;
+    cairo_rectangle_int_t old_surface_extents;
+
+    old_width = surface->width;
+    old_height = surface->height;
+    old_surface_extents = surface->surface_extents;
+    old_in_xobject = surface->in_xobject;
+    surface->in_xobject = TRUE;
+    _cairo_pdf_surface_set_size_internal (surface,
+					  group->width,
+					  group->height);
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+    /* _mask is a special case that requires two groups - source
+     * and mask as well as a smask and gstate dictionary */
+    if (group->operation == PDF_MASK) {
+	status = _cairo_pdf_surface_write_mask_group (surface, group);
+	goto RESTORE_SIZE;
+    }
+
+    _get_bbox_from_extents (&group->extents, &bbox);
+    status = _cairo_pdf_surface_open_group (surface, &bbox, &group->group_res);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_select_pattern (surface,
+						group->source,
+						group->source_res,
+						group->operation == PDF_STROKE);
+    if (unlikely (status))
+	return status;
+
+    switch (group->operation) {
+    case PDF_PAINT:
+	_cairo_output_stream_printf (surface->output,
+				     "0 0 %f %f re f\n",
+				     surface->width, surface->height);
+	break;
+    case PDF_MASK:
+	ASSERT_NOT_REACHED;
+	break;
+    case PDF_FILL:
+	status = _cairo_pdf_operators_fill (&surface->pdf_operators,
+					    &group->path,
+					    group->fill_rule);
+	break;
+    case PDF_STROKE:
+	status = _cairo_pdf_operators_stroke (&surface->pdf_operators,
+					      &group->path,
+					      &group->style,
+					      &group->ctm,
+					      &group->ctm_inverse);
+	break;
+    case PDF_SHOW_GLYPHS:
+	status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
+							group->utf8, group->utf8_len,
+							group->glyphs, group->num_glyphs,
+							group->clusters, group->num_clusters,
+							group->cluster_flags,
+							group->scaled_font);
+	break;
+    }
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_unselect_pattern (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_surface_close_group (surface, NULL);
+
+RESTORE_SIZE:
+    surface->in_xobject = old_in_xobject;
+    _cairo_pdf_surface_set_size_internal (surface,
+					  old_width,
+					  old_height);
+    surface->surface_extents = old_surface_extents;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_patterns_and_smask_groups (cairo_pdf_surface_t *surface,
+						    cairo_bool_t         finish)
+{
+    cairo_pdf_pattern_t pattern;
+    cairo_pdf_smask_group_t *group;
+    cairo_pdf_source_surface_t src_surface;
+    unsigned int pattern_index, group_index, surface_index, doc_surface_index;
+    cairo_int_status_t status;
+    cairo_bool_t is_image;
+
+    /* Writing out PDF_MASK groups will cause additional smask groups
+     * to be appended to surface->smask_groups. Additional patterns
+     * may also be appended to surface->patterns.
+     *
+     * Writing recording surface patterns will cause additional patterns
+     * and groups to be appended.
+     */
+    pattern_index = 0;
+    group_index = 0;
+    surface_index = 0;
+    doc_surface_index = 0;
+    while ((pattern_index < _cairo_array_num_elements (&surface->page_patterns)) ||
+	   (group_index < _cairo_array_num_elements (&surface->smask_groups)) ||
+	   (surface_index < _cairo_array_num_elements (&surface->page_surfaces)) ||
+	   (finish && (doc_surface_index < _cairo_array_num_elements (&surface->doc_surfaces))))
+    {
+	for (; group_index < _cairo_array_num_elements (&surface->smask_groups); group_index++) {
+	    _cairo_array_copy_element (&surface->smask_groups, group_index, &group);
+	    status = _cairo_pdf_surface_write_smask_group (surface, group);
+	    if (unlikely (status))
+		return status;
+	}
+
+	for (; pattern_index < _cairo_array_num_elements (&surface->page_patterns); pattern_index++) {
+	    _cairo_array_copy_element (&surface->page_patterns, pattern_index, &pattern);
+	    status = _cairo_pdf_surface_emit_pattern (surface, &pattern);
+	    if (unlikely (status))
+		return status;
+	}
+
+	for (; surface_index < _cairo_array_num_elements (&surface->page_surfaces); surface_index++) {
+	    _cairo_array_copy_element (&surface->page_surfaces, surface_index, &src_surface);
+	    status = _cairo_pdf_surface_emit_surface (surface, &src_surface, FALSE, &is_image);
+	    if (unlikely (status))
+		return status;
+	}
+
+	if (finish) {
+	    for (; doc_surface_index < _cairo_array_num_elements (&surface->doc_surfaces); doc_surface_index++) {
+		_cairo_array_copy_element (&surface->doc_surfaces, doc_surface_index, &src_surface);
+		status = _cairo_pdf_surface_emit_surface (surface, &src_surface, FALSE, &is_image);
+		if (unlikely (status))
+		    return status;
+	    }
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface)
+{
+    cairo_pdf_resource_t knockout, res, thumbnail_res;
+    cairo_pdf_resource_t *page;
+    cairo_int_status_t status;
+    unsigned int i, len, page_num, num_annots;
+
+    status = _cairo_pdf_interchange_write_page_objects (surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_pdf_group_resources_clear (&surface->resources);
+    if (surface->has_fallback_images) {
+	cairo_rectangle_int_t extents;
+	cairo_box_double_t    bbox;
+
+	extents.x = 0;
+	extents.y = 0;
+	extents.width = ceil (surface->width);
+	extents.height = ceil (surface->height);
+	_get_bbox_from_extents (&extents, &bbox);
+	status = _cairo_pdf_surface_open_knockout_group (surface, &bbox);
+	if (unlikely (status))
+	    return status;
+
+	len = _cairo_array_num_elements (&surface->knockout_group);
+	for (i = 0; i < len; i++) {
+	    _cairo_array_copy_element (&surface->knockout_group, i, &res);
+	    _cairo_output_stream_printf (surface->output,
+					 "/x%d Do\n",
+					 res.id);
+	    status = _cairo_pdf_surface_add_xobject (surface, res);
+	    if (unlikely (status))
+		return status;
+	}
+	_cairo_output_stream_printf (surface->output,
+				     "/x%d Do\n",
+				     surface->content.id);
+	status = _cairo_pdf_surface_add_xobject (surface, surface->content);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_surface_close_group (surface, &knockout);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_pdf_group_resources_clear (&surface->resources);
+	status = _cairo_pdf_surface_open_content_stream (surface, NULL, NULL, FALSE, FALSE);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->output,
+				     "/x%d Do\n",
+				     knockout.id);
+	status = _cairo_pdf_surface_add_xobject (surface, knockout);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_pdf_surface_close_content_stream (surface);
+	if (unlikely (status))
+	    return status;
+    }
+
+    thumbnail_res.id = 0;
+    if (surface->thumbnail_image) {
+	cairo_pdf_source_surface_entry_t entry;
+
+	memset (&entry, 0, sizeof (entry));
+	thumbnail_res = _cairo_pdf_surface_new_object (surface);
+	entry.surface_res = thumbnail_res;
+	_cairo_pdf_surface_emit_image (surface, surface->thumbnail_image, &entry);
+    }
+
+    page_num = _cairo_array_num_elements (&surface->pages);
+    page = _cairo_array_index (&surface->pages, page_num - 1);
+    _cairo_pdf_surface_update_object (surface, *page);
+    _cairo_output_stream_printf (surface->output,
+				 "%d 0 obj\n"
+				 "<< /Type /Page %% %d\n"
+				 "   /Parent %d 0 R\n"
+				 "   /MediaBox [ 0 0 %f %f ]\n"
+				 "   /Contents %d 0 R\n"
+				 "   /Group <<\n"
+				 "      /Type /Group\n"
+				 "      /S /Transparency\n"
+				 "      /I true\n"
+				 "      /CS /DeviceRGB\n"
+				 "   >>\n"
+				 "   /Resources %d 0 R\n",
+				 page->id,
+				 page_num,
+				 surface->pages_resource.id,
+				 surface->width,
+				 surface->height,
+				 surface->content.id,
+				 surface->content_resources.id);
+
+    if (surface->page_parent_tree >= 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /StructParents %d\n",
+				     surface->page_parent_tree);
+    }
+
+    num_annots = _cairo_array_num_elements (&surface->page_annots);
+    if (num_annots > 0) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Annots [ ");
+	for (i = 0; i < num_annots; i++) {
+	    _cairo_array_copy_element (&surface->page_annots, i, &res);
+	    _cairo_output_stream_printf (surface->output,
+					 "%d 0 R ",
+					 res.id);
+	}
+	_cairo_output_stream_printf (surface->output, "]\n");
+    }
+
+    if (thumbnail_res.id) {
+	_cairo_output_stream_printf (surface->output,
+				     "   /Thumb %d 0 R\n",
+				     thumbnail_res.id);
+    }
+
+    _cairo_output_stream_printf (surface->output,
+				 ">>\n"
+				 "endobj\n");
+
+    status = _cairo_pdf_surface_write_patterns_and_smask_groups (surface, FALSE);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_analyze_surface_pattern_transparency (cairo_pdf_surface_t      *surface,
+							 cairo_surface_pattern_t  *pattern)
+{
+    cairo_image_surface_t  *image;
+    void		   *image_extra;
+    cairo_int_status_t      status;
+    cairo_image_transparency_t transparency;
+
+    status = _cairo_surface_acquire_source_image (pattern->surface,
+						  &image,
+						  &image_extra);
+    if (unlikely (status))
+	return status;
+
+    if (image->base.status)
+	return image->base.status;
+
+    transparency = _cairo_image_analyze_transparency (image);
+    if (transparency == CAIRO_IMAGE_IS_OPAQUE)
+	status = CAIRO_STATUS_SUCCESS;
+    else
+	status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+
+    _cairo_surface_release_source_image (pattern->surface, image, image_extra);
+
+    return status;
+}
+
+static cairo_bool_t
+_surface_pattern_supported (cairo_surface_pattern_t *pattern)
+{
+    cairo_extend_t extend;
+
+    if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+	return TRUE;
+
+    if (pattern->surface->backend->acquire_source_image == NULL)
+	return FALSE;
+
+    /* Does an ALPHA-only source surface even make sense? Maybe, but I
+     * don't think it's worth the extra code to support it. */
+
+/* XXX: Need to write this function here...
+    if (pattern->surface->content == CAIRO_CONTENT_ALPHA)
+	return FALSE;
+*/
+
+    extend = cairo_pattern_get_extend (&pattern->base);
+    switch (extend) {
+    case CAIRO_EXTEND_NONE:
+    case CAIRO_EXTEND_REPEAT:
+    case CAIRO_EXTEND_REFLECT:
+    /* There's no point returning FALSE for EXTEND_PAD, as the image
+     * surface does not currently implement it either */
+    case CAIRO_EXTEND_PAD:
+	return TRUE;
+    }
+
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+static cairo_bool_t
+_pattern_supported (const cairo_pattern_t *pattern)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return TRUE;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _surface_pattern_supported ((cairo_surface_pattern_t *) pattern);
+
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+_pdf_operator_supported (cairo_operator_t op)
+{
+    switch (op) {
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_MULTIPLY:
+    case CAIRO_OPERATOR_SCREEN:
+    case CAIRO_OPERATOR_OVERLAY:
+    case CAIRO_OPERATOR_DARKEN:
+    case CAIRO_OPERATOR_LIGHTEN:
+    case CAIRO_OPERATOR_COLOR_DODGE:
+    case CAIRO_OPERATOR_COLOR_BURN:
+    case CAIRO_OPERATOR_HARD_LIGHT:
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+    case CAIRO_OPERATOR_DIFFERENCE:
+    case CAIRO_OPERATOR_EXCLUSION:
+    case CAIRO_OPERATOR_HSL_HUE:
+    case CAIRO_OPERATOR_HSL_SATURATION:
+    case CAIRO_OPERATOR_HSL_COLOR:
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return TRUE;
+
+    default:
+    case CAIRO_OPERATOR_CLEAR:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_OUT:
+    case CAIRO_OPERATOR_ATOP:
+    case CAIRO_OPERATOR_DEST:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_DEST_OUT:
+    case CAIRO_OPERATOR_DEST_ATOP:
+    case CAIRO_OPERATOR_XOR:
+    case CAIRO_OPERATOR_ADD:
+    case CAIRO_OPERATOR_SATURATE:
+	return FALSE;
+    }
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_analyze_operation (cairo_pdf_surface_t  *surface,
+				      cairo_operator_t      op,
+				      const cairo_pattern_t      *pattern,
+				      const cairo_rectangle_int_t	 *extents)
+{
+    if (surface->force_fallbacks &&
+	surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (! _pattern_supported (pattern))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (_pdf_operator_supported (op)) {
+	if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
+
+	    if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
+		if (pattern->extend == CAIRO_EXTEND_PAD) {
+		    cairo_box_t box;
+		    cairo_rectangle_int_t rect;
+		    cairo_rectangle_int_t rec_extents;
+
+		    /* get the operation extents in pattern space */
+		    _cairo_box_from_rectangle (&box, extents);
+		    _cairo_matrix_transform_bounding_box_fixed (&pattern->matrix, &box, NULL);
+		    _cairo_box_round_to_rectangle (&box, &rect);
+
+		    /* Check if surface needs padding to fill extents */
+		    if (_cairo_surface_get_extents (surface_pattern->surface, &rec_extents)) {
+			if (_cairo_fixed_integer_ceil(box.p1.x) < rec_extents.x ||
+			    _cairo_fixed_integer_ceil(box.p1.y) < rec_extents.y ||
+			    _cairo_fixed_integer_floor(box.p2.y) > rec_extents.x + rec_extents.width ||
+			    _cairo_fixed_integer_floor(box.p2.y) > rec_extents.y + rec_extents.height)
+			{
+			    return CAIRO_INT_STATUS_UNSUPPORTED;
+			}
+		    }
+		}
+		return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
+	    }
+	}
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+
+    /* The SOURCE operator is supported if the pattern is opaque or if
+     * there is nothing painted underneath. */
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
+
+	    if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
+		if (_cairo_pattern_is_opaque (pattern, extents)) {
+		    return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
+		} else {
+		    /* FIXME: The analysis surface does not yet have
+		     * the capability to analyze a non opaque recording
+		     * surface and mark it supported if there is
+		     * nothing underneath. For now recording surfaces of
+		     * type CONTENT_COLOR_ALPHA painted with
+		     * OPERATOR_SOURCE will result in a fallback
+		     * image. */
+
+		    return CAIRO_INT_STATUS_UNSUPPORTED;
+		}
+	    } else {
+		return _cairo_pdf_surface_analyze_surface_pattern_transparency (surface,
+										surface_pattern);
+	    }
+	}
+
+	if (_cairo_pattern_is_opaque (pattern, extents))
+	    return CAIRO_STATUS_SUCCESS;
+	else
+	    return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_bool_t
+_cairo_pdf_surface_operation_supported (cairo_pdf_surface_t  *surface,
+					cairo_operator_t      op,
+					const cairo_pattern_t      *pattern,
+					const cairo_rectangle_int_t *extents)
+{
+    return _cairo_pdf_surface_analyze_operation (surface, op, pattern, extents) != CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_start_fallback (cairo_pdf_surface_t *surface)
+{
+    cairo_box_double_t bbox;
+    cairo_int_status_t status;
+
+    status = _cairo_pdf_surface_close_content_stream (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_array_append (&surface->knockout_group, &surface->content);
+    if (unlikely (status))
+	return status;
+
+    _cairo_pdf_group_resources_clear (&surface->resources);
+    bbox.p1.x = 0;
+    bbox.p1.y = 0;
+    bbox.p2.x = surface->width;
+    bbox.p2.y = surface->height;
+    status = _cairo_pdf_surface_open_content_stream (surface, &bbox, NULL, TRUE, TRUE);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_pdf_interchange_begin_page_content (surface);
+}
+
+/* If source is an opaque image and mask is an image and both images
+ * have the same bounding box we can emit them as a image/smask pair.
+ */
+static cairo_int_status_t
+_cairo_pdf_surface_emit_combined_smask (cairo_pdf_surface_t         *surface,
+					cairo_operator_t	     op,
+					const cairo_pattern_t       *source,
+					const cairo_pattern_t       *mask,
+					const cairo_rectangle_int_t *extents)
+{
+    cairo_int_status_t status;
+    cairo_image_surface_t  *image;
+    void		   *image_extra;
+    cairo_image_transparency_t transparency;
+    int src_width, src_height;
+    int mask_width, mask_height;
+    double src_x_offset, src_y_offset;
+    double mask_x_offset, mask_y_offset;
+    double src_x1, src_y1, src_x2, src_y2;
+    double mask_x1, mask_y1, mask_x2, mask_y2;
+    cairo_matrix_t p2u;
+    double src_radius, mask_radius, e;
+    cairo_bool_t need_smask;
+    cairo_pdf_source_surface_entry_t *pdf_source;
+
+    /* Check that source and mask are images */
+
+    if (!((source->type == CAIRO_PATTERN_TYPE_SURFACE || source->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) &&
+	  (mask->type == CAIRO_PATTERN_TYPE_SURFACE || mask->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	((cairo_surface_pattern_t *) source)->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	((cairo_surface_pattern_t *) mask)->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (source->extend != CAIRO_EXTEND_NONE || mask->extend != CAIRO_EXTEND_NONE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Check that source is opaque and get image sizes */
+
+    status = _cairo_pdf_surface_acquire_source_image_from_pattern (surface, source,
+								   &image, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    if (image->base.status)
+	return image->base.status;
+
+    src_width = image->width;
+    src_height = image->height;
+    if (source->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
+	cairo_surface_get_device_offset (&image->base, &src_x_offset, &src_y_offset);
+    } else {
+	src_x_offset = 0;
+	src_y_offset = 0;
+    }
+
+    transparency = _cairo_image_analyze_transparency (image);
+    _cairo_pdf_surface_release_source_image_from_pattern (surface, source, image, image_extra);
+
+    if (transparency != CAIRO_IMAGE_IS_OPAQUE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_pdf_surface_acquire_source_image_from_pattern (surface, mask,
+								   &image, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    if (image->base.status)
+	return image->base.status;
+
+    mask_width = image->width;
+    mask_height = image->height;
+    if (mask->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
+	cairo_surface_get_device_offset (&image->base, &mask_x_offset, &mask_y_offset);
+    } else {
+	mask_x_offset = 0;
+	mask_y_offset = 0;
+    }
+
+    transparency = _cairo_image_analyze_transparency (image);
+    need_smask = transparency != CAIRO_IMAGE_IS_OPAQUE;
+
+    _cairo_pdf_surface_release_source_image_from_pattern (surface, mask, image, image_extra);
+
+    /* Check that both images have the same extents with a tolerance
+     * of half the smallest source pixel. */
+
+    p2u = source->matrix;
+    status = cairo_matrix_invert (&p2u);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+    src_x1 = 0;
+    src_y1 = 0;
+    src_x2 = src_width;
+    src_y2 = src_height;
+    cairo_matrix_transform_point (&p2u, &src_x1, &src_y1);
+    cairo_matrix_transform_point (&p2u, &src_x2, &src_y2);
+    src_radius = _cairo_matrix_transformed_circle_major_axis (&p2u, 0.5);
+
+    p2u = mask->matrix;
+    status = cairo_matrix_invert (&p2u);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+    mask_x1 = 0;
+    mask_y1 = 0;
+    mask_x2 = mask_width;
+    mask_y2 = mask_height;
+    cairo_matrix_transform_point (&p2u, &mask_x1, &mask_y1);
+    cairo_matrix_transform_point (&p2u, &mask_x2, &mask_y2);
+    mask_radius = _cairo_matrix_transformed_circle_major_axis (&p2u, 0.5);
+
+    if (src_radius < mask_radius)
+	e = src_radius;
+    else
+	e = mask_radius;
+
+    if (fabs(src_x1 - mask_x1) > e ||
+	fabs(src_x2 - mask_x2) > e ||
+	fabs(src_y1 - mask_y1) > e ||
+	fabs(src_y2 - mask_y2) > e)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Check both images have same device offset */
+    if (fabs(src_x_offset - mask_x_offset) > e ||
+	fabs(src_y_offset - mask_y_offset) > e)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (need_smask) {
+	status = _cairo_pdf_surface_add_source_surface (surface,
+							NULL,
+							mask,
+							op,
+							source->filter,
+							FALSE, /* stencil mask */
+							TRUE, /* smask */
+							FALSE, /* need_transp_group */
+							extents,
+							NULL, /* smask_res */
+							&pdf_source,
+							NULL,
+							NULL,
+							NULL);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output, "q\n");
+    status = _cairo_pdf_surface_paint_surface_pattern (surface, op, source, extents,
+						       1.0, /* alpha */
+						       need_smask ? &pdf_source->surface_res : NULL,
+						       FALSE);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output, "Q\n");
+
+    status = _cairo_output_stream_get_status (surface->output);
+
+
+    return status;
+}
+
+/* A PDF stencil mask is an A1 mask used with the current color */
+static cairo_int_status_t
+_cairo_pdf_surface_emit_stencil_mask (cairo_pdf_surface_t         *surface,
+				      cairo_operator_t	           op,
+				      const cairo_pattern_t       *source,
+				      const cairo_pattern_t       *mask,
+				      const cairo_rectangle_int_t *extents)
+{
+    cairo_int_status_t status;
+    cairo_image_surface_t  *image;
+    void		   *image_extra;
+    cairo_image_transparency_t transparency;
+    cairo_pdf_resource_t pattern_res = {0};
+
+    if (! (source->type == CAIRO_PATTERN_TYPE_SOLID &&
+	   (mask->type == CAIRO_PATTERN_TYPE_SURFACE || mask->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	((cairo_surface_pattern_t *) mask)->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = _cairo_pdf_surface_acquire_source_image_from_pattern (surface, mask,
+								   &image, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    if (image->base.status)
+	return image->base.status;
+
+    transparency = _cairo_image_analyze_transparency (image);
+    if (transparency != CAIRO_IMAGE_IS_OPAQUE &&
+	transparency != CAIRO_IMAGE_HAS_BILEVEL_ALPHA)
+    {
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	goto cleanup;
+    }
+
+    status = _cairo_pdf_surface_select_pattern (surface, source,
+						pattern_res, FALSE);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output, "q\n");
+    status = _cairo_pdf_surface_paint_surface_pattern (surface, op, mask, extents, 1.0, NULL, TRUE);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->output, "Q\n");
+
+    status = _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_pdf_surface_release_source_image_from_pattern (surface, mask, image, image_extra);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_set_clip (cairo_pdf_surface_t *surface,
+			     cairo_composite_rectangles_t *composite)
+{
+    cairo_clip_t *clip = composite->clip;
+
+    if (_cairo_composite_rectangles_can_reduce_clip (composite, clip))
+	clip = NULL;
+
+    if (clip == NULL) {
+	if (_cairo_composite_rectangles_can_reduce_clip (composite,
+							 surface->clipper.clip))
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    return _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_paint (void			*abstract_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  const cairo_clip_t	*clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_pdf_smask_group_t *group;
+    cairo_pdf_resource_t pattern_res, gstate_res;
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_paint (&extents,
+							 &surface->base,
+							 op, source, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_interchange_add_operation_extents (surface, &extents.bounded);
+    if (unlikely (status))
+	return status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_pdf_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup;
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_FALLBACK) {
+	status = _cairo_pdf_surface_start_fallback  (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
+
+    status = _cairo_pdf_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_operator (surface, op);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (_can_paint_pattern (source)) {
+	_cairo_output_stream_printf (surface->output, "q\n");
+	status = _cairo_pdf_surface_paint_pattern (surface,
+						   op,
+						   source,
+						   &extents.bounded,
+						   1.0, /* alpha */
+						   FALSE); /* mask */
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output, "Q\n");
+	_cairo_composite_rectangles_fini (&extents);
+	return _cairo_output_stream_get_status (surface->output);
+    }
+
+    pattern_res.id = 0;
+    gstate_res.id = 0;
+    status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
+						 &extents.bounded,
+						 &pattern_res, &gstate_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (gstate_res.id != 0) {
+	group = _cairo_pdf_surface_create_smask_group (surface, &extents.bounded);
+	if (unlikely (group == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto cleanup;
+	}
+
+	group->operation = PDF_PAINT;
+	status = _cairo_pattern_create_copy (&group->source, source);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+	group->source_res = pattern_res;
+	status = _cairo_pdf_surface_add_smask_group (surface, group);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+
+	status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_add_xobject (surface, group->group_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output,
+				     "q /s%d gs /x%d Do Q\n",
+				     gstate_res.id,
+				     group->group_res.id);
+    } else {
+	status = _cairo_pdf_surface_select_pattern (surface, source,
+						    pattern_res, FALSE);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output,
+				     "%d %d %d %d re f\n",
+				     surface->surface_extents.x,
+				     surface->surface_extents.y,
+				     surface->surface_extents.width,
+				     surface->surface_extents.height);
+
+	status = _cairo_pdf_surface_unselect_pattern (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+    return _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_mask (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_pattern_t	*mask,
+			 const cairo_clip_t	*clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_pdf_smask_group_t *group;
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+    cairo_rectangle_int_t r;
+    cairo_box_t box;
+    double alpha;
+
+    status = _cairo_composite_rectangles_init_for_mask (&extents,
+							&surface->base,
+							op, source, mask, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_interchange_add_operation_extents (surface, &extents.bounded);
+    if (unlikely (status))
+	return status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	cairo_int_status_t source_status, mask_status;
+
+	status = _cairo_pdf_surface_analyze_operation (surface, op, source, &extents.bounded);
+	if (_cairo_int_status_is_error (status))
+	    goto cleanup;
+	source_status = status;
+
+	if (mask->has_component_alpha) {
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	} else {
+	    status = _cairo_pdf_surface_analyze_operation (surface, op, mask, &extents.bounded);
+	    if (_cairo_int_status_is_error (status))
+		goto cleanup;
+	}
+	mask_status = status;
+
+	_cairo_composite_rectangles_fini (&extents);
+	return _cairo_analysis_surface_merge_status (source_status,
+						     mask_status);
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_FALLBACK) {
+	status = _cairo_pdf_surface_start_fallback (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
+    assert (_cairo_pdf_surface_operation_supported (surface, op, mask, &extents.bounded));
+
+    /* get the accurate extents */
+    status = _cairo_pattern_get_ink_extents (source, &r);
+    if (unlikely (status))
+	goto cleanup;
+
+    /* XXX slight impedance mismatch */
+    _cairo_box_from_rectangle (&box, &r);
+    status = _cairo_composite_rectangles_intersect_source_extents (&extents,
+								   &box);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pattern_get_ink_extents (mask, &r);
+    if (unlikely (status))
+	goto cleanup;
+
+    _cairo_box_from_rectangle (&box, &r);
+    status = _cairo_composite_rectangles_intersect_mask_extents (&extents,
+								 &box);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_operator (surface, op);
+    if (unlikely (status))
+	goto cleanup;
+
+    /* Check if we can combine source and mask into a smask image */
+    status = _cairo_pdf_surface_emit_combined_smask (surface, op, source, mask, &extents.bounded);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	goto cleanup;
+
+    /* Check if we can use a stencil mask */
+    status = _cairo_pdf_surface_emit_stencil_mask (surface, op, source, mask, &extents.bounded);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	goto cleanup;
+
+    /* Check if we can set ca/CA instead of an smask. We could handle
+     * other source patterns as well but for now this is the easiest,
+     * and most common, case to handle. */
+    if (_cairo_pattern_is_constant_alpha (mask, &extents.bounded, &alpha) &&
+	_can_paint_pattern (source)) {
+	_cairo_output_stream_printf (surface->output, "q\n");
+	status = _cairo_pdf_surface_paint_pattern (surface,
+						   op,
+						   source,
+						   &extents.bounded,
+						   alpha,
+						   FALSE); /* mask */
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output, "Q\n");
+	_cairo_composite_rectangles_fini (&extents);
+	return _cairo_output_stream_get_status (surface->output);
+    }
+
+    group = _cairo_pdf_surface_create_smask_group (surface, &extents.bounded);
+    if (unlikely (group == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto cleanup;
+    }
+
+    group->operation = PDF_MASK;
+    status = _cairo_pattern_create_copy (&group->source, source);
+    if (unlikely (status)) {
+	_cairo_pdf_smask_group_destroy (group);
+	goto cleanup;
+    }
+    status = _cairo_pattern_create_copy (&group->mask, mask);
+    if (unlikely (status)) {
+	_cairo_pdf_smask_group_destroy (group);
+	goto cleanup;
+    }
+    group->source_res = _cairo_pdf_surface_new_object (surface);
+    if (group->source_res.id == 0) {
+	_cairo_pdf_smask_group_destroy (group);
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto cleanup;
+    }
+
+    status = _cairo_pdf_surface_add_smask_group (surface, group);
+    if (unlikely (status)) {
+	_cairo_pdf_smask_group_destroy (group);
+	goto cleanup;
+    }
+
+    status = _cairo_pdf_surface_add_smask (surface, group->group_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_add_xobject (surface, group->source_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	goto cleanup;
+
+    _cairo_output_stream_printf (surface->output,
+				 "q /s%d gs /x%d Do Q\n",
+				 group->group_res.id,
+				 group->source_res.id);
+
+    _cairo_composite_rectangles_fini (&extents);
+    return _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_stroke (void			*abstract_surface,
+			   cairo_operator_t	 op,
+			   const cairo_pattern_t *source,
+			   const cairo_path_fixed_t	*path,
+			   const cairo_stroke_style_t	*style,
+			   const cairo_matrix_t	*ctm,
+			   const cairo_matrix_t	*ctm_inverse,
+			   double		 tolerance,
+			   cairo_antialias_t	 antialias,
+			   const cairo_clip_t	*clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_pdf_smask_group_t *group;
+    cairo_pdf_resource_t pattern_res, gstate_res;
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  &surface->base,
+							  op, source,
+							  path, style, ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t mask;
+	cairo_box_t box;
+
+	status = _cairo_path_fixed_stroke_extents (path, style,
+						   ctm, ctm_inverse,
+						   tolerance,
+						   &mask);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_box_from_rectangle (&box, &mask);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents,
+								     &box);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    status = _cairo_pdf_interchange_add_operation_extents (surface, &extents.bounded);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_pdf_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup;
+    }
+
+    assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
+
+    status = _cairo_pdf_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup;
+
+    pattern_res.id = 0;
+    gstate_res.id = 0;
+    status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
+						 &extents.bounded,
+						 &pattern_res, &gstate_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_operator (surface, op);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (gstate_res.id != 0) {
+	group = _cairo_pdf_surface_create_smask_group (surface, &extents.bounded);
+	if (unlikely (group == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto cleanup;
+	}
+
+	group->operation = PDF_STROKE;
+	status = _cairo_pattern_create_copy (&group->source, source);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+	group->source_res = pattern_res;
+	status = _cairo_path_fixed_init_copy (&group->path, path);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+
+	group->style = *style;
+	group->ctm = *ctm;
+	group->ctm_inverse = *ctm_inverse;
+	status = _cairo_pdf_surface_add_smask_group (surface, group);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+
+	status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_add_xobject (surface, group->group_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output,
+				     "q /s%d gs /x%d Do Q\n",
+				     gstate_res.id,
+				     group->group_res.id);
+    } else {
+	status = _cairo_pdf_surface_select_pattern (surface, source, pattern_res, TRUE);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_operators_stroke (&surface->pdf_operators,
+					      path,
+					      style,
+					      ctm,
+					      ctm_inverse);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_unselect_pattern (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+    return _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_fill (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_path_fixed_t*path,
+			 cairo_fill_rule_t	 fill_rule,
+			 double			 tolerance,
+			 cairo_antialias_t	 antialias,
+			 const cairo_clip_t	*clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+    cairo_pdf_smask_group_t *group;
+    cairo_pdf_resource_t pattern_res, gstate_res;
+    cairo_composite_rectangles_t extents;
+
+    status = _cairo_composite_rectangles_init_for_fill (&extents,
+							&surface->base,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t mask;
+	cairo_box_t box;
+
+	_cairo_path_fixed_fill_extents (path,
+					fill_rule,
+					tolerance,
+					&mask);
+
+	_cairo_box_from_rectangle (&box, &mask);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents,
+								     &box);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    status = _cairo_pdf_interchange_add_operation_extents (surface, &extents.bounded);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_pdf_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup;
+    } else if (surface->paginated_mode == CAIRO_PAGINATED_MODE_FALLBACK) {
+	status = _cairo_pdf_surface_start_fallback (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
+
+    status = _cairo_pdf_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_operator (surface, op);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (_can_paint_pattern (source)) {
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output, "q\n");
+	status =  _cairo_pdf_operators_clip (&surface->pdf_operators,
+					     path,
+					     fill_rule);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_paint_pattern (surface,
+						   op,
+						   source,
+						   &extents.bounded,
+						   1.0, /* alpha */
+						   FALSE); /* mask */
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output, "Q\n");
+	status = _cairo_output_stream_get_status (surface->output);
+	goto cleanup;
+    }
+
+    pattern_res.id = 0;
+    gstate_res.id = 0;
+    status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
+						 &extents.bounded,
+						 &pattern_res, &gstate_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (gstate_res.id != 0) {
+	group = _cairo_pdf_surface_create_smask_group (surface, &extents.bounded);
+	if (unlikely (group == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto cleanup;
+	}
+
+	group->operation = PDF_FILL;
+	status = _cairo_pattern_create_copy (&group->source, source);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+	group->source_res = pattern_res;
+	status = _cairo_path_fixed_init_copy (&group->path, path);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+
+	group->fill_rule = fill_rule;
+	status = _cairo_pdf_surface_add_smask_group (surface, group);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+
+	status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_add_xobject (surface, group->group_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output,
+				     "q /s%d gs /x%d Do Q\n",
+				     gstate_res.id,
+				     group->group_res.id);
+    } else {
+	status = _cairo_pdf_surface_select_pattern (surface, source, pattern_res, FALSE);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_operators_fill (&surface->pdf_operators,
+					    path,
+					    fill_rule);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_unselect_pattern (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+    return _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_fill_stroke (void			*abstract_surface,
+				cairo_operator_t	 fill_op,
+				const cairo_pattern_t	*fill_source,
+				cairo_fill_rule_t	 fill_rule,
+				double			 fill_tolerance,
+				cairo_antialias_t	 fill_antialias,
+				const cairo_path_fixed_t*path,
+				cairo_operator_t	 stroke_op,
+				const cairo_pattern_t	*stroke_source,
+				const cairo_stroke_style_t *stroke_style,
+				const cairo_matrix_t	*stroke_ctm,
+				const cairo_matrix_t	*stroke_ctm_inverse,
+				double			 stroke_tolerance,
+				cairo_antialias_t	 stroke_antialias,
+				const cairo_clip_t	*clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+    cairo_pdf_resource_t fill_pattern_res, stroke_pattern_res, gstate_res;
+    cairo_composite_rectangles_t extents;
+
+    /* During analysis we return unsupported and let the _fill and
+     * _stroke functions that are on the fallback path do the analysis
+     * for us. During render we may still encounter unsupported
+     * combinations of fill/stroke patterns. However we can return
+     * unsupported anytime to let the _fill and _stroke functions take
+     * over.
+     */
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* PDF rendering of fill-stroke is not the same as cairo when
+     * either the fill or stroke is not opaque.
+     */
+    if ( !_cairo_pattern_is_opaque (fill_source, NULL) ||
+	 !_cairo_pattern_is_opaque (stroke_source, NULL))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (fill_op != stroke_op)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Compute the operation extents using the stroke which will naturally
+     * be larger than the fill extents.
+     */
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  &surface->base,
+							  stroke_op, stroke_source,
+							  path, stroke_style, stroke_ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t mask;
+	cairo_box_t box;
+
+	status = _cairo_path_fixed_stroke_extents (path, stroke_style,
+						   stroke_ctm, stroke_ctm_inverse,
+						   stroke_tolerance,
+						   &mask);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_box_from_rectangle (&box, &mask);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents,
+								     &box);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    status = _cairo_pdf_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_operator (surface, fill_op);
+    if (unlikely (status))
+	goto cleanup;
+
+    /* use the more accurate extents */
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t mask;
+	cairo_box_t box;
+
+	_cairo_path_fixed_fill_extents (path,
+					fill_rule,
+					fill_tolerance,
+					&mask);
+
+	_cairo_box_from_rectangle (&box, &mask);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents,
+								     &box);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    status = _cairo_pdf_interchange_add_operation_extents (surface, &extents.bounded);
+    if (unlikely (status))
+	goto cleanup;
+
+    fill_pattern_res.id = 0;
+    gstate_res.id = 0;
+    status = _cairo_pdf_surface_add_pdf_pattern (surface, fill_source,
+						 fill_op,
+						 &extents.bounded,
+						 &fill_pattern_res,
+						 &gstate_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    assert (gstate_res.id == 0);
+
+    stroke_pattern_res.id = 0;
+    gstate_res.id = 0;
+    status = _cairo_pdf_surface_add_pdf_pattern (surface,
+						 stroke_source,
+						 stroke_op,
+						 &extents.bounded,
+						 &stroke_pattern_res,
+						 &gstate_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    assert (gstate_res.id == 0);
+
+    /* As PDF has separate graphics state for fill and stroke we can
+     * select both at the same time */
+    status = _cairo_pdf_surface_select_pattern (surface, fill_source,
+						fill_pattern_res, FALSE);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_pattern (surface, stroke_source,
+						stroke_pattern_res, TRUE);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_operators_fill_stroke (&surface->pdf_operators,
+					       path,
+					       fill_rule,
+					       stroke_style,
+					       stroke_ctm,
+					       stroke_ctm_inverse);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_unselect_pattern (surface);
+    if (unlikely (status))
+	goto cleanup;
+
+    _cairo_composite_rectangles_fini (&extents);
+    return _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_bool_t
+_cairo_pdf_surface_has_show_text_glyphs	(void			*abstract_surface)
+{
+    return TRUE;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_show_text_glyphs (void			*abstract_surface,
+				     cairo_operator_t		 op,
+				     const cairo_pattern_t	*source,
+				     const char                 *utf8,
+				     int                         utf8_len,
+				     cairo_glyph_t		*glyphs,
+				     int			 num_glyphs,
+				     const cairo_text_cluster_t *clusters,
+				     int                         num_clusters,
+				     cairo_text_cluster_flags_t  cluster_flags,
+				     cairo_scaled_font_t	*scaled_font,
+				     const cairo_clip_t		*clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_pdf_smask_group_t *group;
+    cairo_pdf_resource_t pattern_res, gstate_res;
+    cairo_composite_rectangles_t extents;
+    cairo_bool_t overlap;
+    cairo_int_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_glyphs (&extents,
+							  &surface->base,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip,
+							  &overlap);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_interchange_add_operation_extents (surface, &extents.bounded);
+    if (unlikely (status))
+	return status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_pdf_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup;
+    }
+
+    assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
+
+    status = _cairo_pdf_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup;
+
+    pattern_res.id = 0;
+    gstate_res.id = 0;
+    status = _cairo_pdf_surface_add_pdf_pattern (surface, source, op,
+						 &extents.bounded,
+						 &pattern_res, &gstate_res);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_surface_select_operator (surface, op);
+    if (unlikely (status))
+	goto cleanup;
+
+    if (gstate_res.id != 0) {
+	group = _cairo_pdf_surface_create_smask_group (surface, &extents.bounded);
+	if (unlikely (group == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto cleanup;
+	}
+
+	group->operation = PDF_SHOW_GLYPHS;
+	status = _cairo_pattern_create_copy (&group->source, source);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+	group->source_res = pattern_res;
+
+	if (utf8_len) {
+	    group->utf8 = _cairo_malloc (utf8_len);
+	    if (unlikely (group->utf8 == NULL)) {
+		_cairo_pdf_smask_group_destroy (group);
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto cleanup;
+	    }
+	    memcpy (group->utf8, utf8, utf8_len);
+	}
+	group->utf8_len = utf8_len;
+
+	if (num_glyphs) {
+	    group->glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+	    if (unlikely (group->glyphs == NULL)) {
+		_cairo_pdf_smask_group_destroy (group);
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto cleanup;
+	    }
+	    memcpy (group->glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
+	}
+	group->num_glyphs = num_glyphs;
+
+	if (num_clusters) {
+	    group->clusters = _cairo_malloc_ab (num_clusters, sizeof (cairo_text_cluster_t));
+	    if (unlikely (group->clusters == NULL)) {
+		_cairo_pdf_smask_group_destroy (group);
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto cleanup;
+	    }
+	    memcpy (group->clusters, clusters, sizeof (cairo_text_cluster_t) * num_clusters);
+	}
+	group->num_clusters = num_clusters;
+
+	group->scaled_font = cairo_scaled_font_reference (scaled_font);
+	status = _cairo_pdf_surface_add_smask_group (surface, group);
+	if (unlikely (status)) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    goto cleanup;
+	}
+
+	status = _cairo_pdf_surface_add_smask (surface, gstate_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_add_xobject (surface, group->group_res);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    goto cleanup;
+
+	_cairo_output_stream_printf (surface->output,
+				     "q /s%d gs /x%d Do Q\n",
+				     gstate_res.id,
+				     group->group_res.id);
+    } else {
+	status = _cairo_pdf_surface_select_pattern (surface, source, pattern_res, FALSE);
+	if (unlikely (status))
+	    goto cleanup;
+
+	/* Each call to show_glyphs() with a transclucent pattern must
+	 * be in a separate text object otherwise overlapping text
+	 * from separate calls to show_glyphs will not composite with
+	 * each other. */
+	if (! _cairo_pattern_is_opaque (source, &extents.bounded)) {
+	    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	    if (unlikely (status))
+		goto cleanup;
+	}
+
+	status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
+							utf8, utf8_len,
+							glyphs, num_glyphs,
+							clusters, num_clusters,
+							cluster_flags,
+							scaled_font);
+	if (unlikely (status))
+	    goto cleanup;
+
+	status = _cairo_pdf_surface_unselect_pattern (surface);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    _cairo_composite_rectangles_fini (&extents);
+    return _cairo_output_stream_get_status (surface->output);
+
+cleanup:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static const char **
+_cairo_pdf_surface_get_supported_mime_types (void		 *abstract_surface)
+{
+    return _cairo_pdf_supported_mime_types;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_tag (void			   *abstract_surface,
+			cairo_bool_t                begin,
+			const char                 *tag_name,
+			const char                 *attributes,
+			const cairo_pattern_t	   *source,
+			const cairo_stroke_style_t *style,
+			const cairo_matrix_t	   *ctm,
+			const cairo_matrix_t	   *ctm_inverse,
+			const cairo_clip_t	   *clip)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_int_status_t status = 0;
+
+    if (begin)
+	status = _cairo_pdf_interchange_tag_begin (surface, tag_name, attributes);
+    else
+	status = _cairo_pdf_interchange_tag_end (surface, tag_name);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_set_paginated_mode (void			*abstract_surface,
+				       cairo_paginated_mode_t	 paginated_mode)
+{
+    cairo_pdf_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    surface->paginated_mode = paginated_mode;
+    status = _cairo_pdf_interchange_begin_page_content (surface);
+    if (unlikely (status))
+	return status;
+
+    if (paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	surface->surface_extents.x = 0;
+	surface->surface_extents.y = 0;
+	surface->surface_extents.width  = ceil (surface->width);
+	surface->surface_extents.height = ceil (surface->height);
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t cairo_pdf_surface_backend = {
+    CAIRO_SURFACE_TYPE_PDF,
+    _cairo_pdf_surface_finish,
+
+    _cairo_default_context_create,
+
+    NULL, /* create similar: handled by wrapper */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL,  /* _cairo_pdf_surface_copy_page */
+    _cairo_pdf_surface_show_page,
+
+    _cairo_pdf_surface_get_extents,
+    _cairo_pdf_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    /* Here are the drawing functions */
+    _cairo_pdf_surface_paint,
+    _cairo_pdf_surface_mask,
+    _cairo_pdf_surface_stroke,
+    _cairo_pdf_surface_fill,
+    _cairo_pdf_surface_fill_stroke,
+    NULL, /* show_glyphs */
+    _cairo_pdf_surface_has_show_text_glyphs,
+    _cairo_pdf_surface_show_text_glyphs,
+    _cairo_pdf_surface_get_supported_mime_types,
+    _cairo_pdf_surface_tag,
+};
+
+static const cairo_paginated_surface_backend_t
+cairo_pdf_surface_paginated_backend = {
+    _cairo_pdf_surface_start_page,
+    _cairo_pdf_surface_set_paginated_mode,
+    NULL, /* set_bounding_box */
+    _cairo_pdf_surface_has_fallback_images,
+    _cairo_pdf_surface_supports_fine_grained_fallbacks,
+    _cairo_pdf_surface_requires_thumbnail_image,
+    _cairo_pdf_surface_set_thumbnail_image,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-pdf.h b/libs/cairo-1.16.0/src/cairo-pdf.h
new file mode 100644
index 0000000..5be0b3f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pdf.h
@@ -0,0 +1,161 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_PDF_H
+#define CAIRO_PDF_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_PDF_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+/**
+ * cairo_pdf_version_t:
+ * @CAIRO_PDF_VERSION_1_4: The version 1.4 of the PDF specification. (Since 1.10)
+ * @CAIRO_PDF_VERSION_1_5: The version 1.5 of the PDF specification. (Since 1.10)
+ *
+ * #cairo_pdf_version_t is used to describe the version number of the PDF
+ * specification that a generated PDF file will conform to.
+ *
+ * Since: 1.10
+ **/
+typedef enum _cairo_pdf_version {
+    CAIRO_PDF_VERSION_1_4,
+    CAIRO_PDF_VERSION_1_5
+} cairo_pdf_version_t;
+
+cairo_public cairo_surface_t *
+cairo_pdf_surface_create (const char		*filename,
+			  double		 width_in_points,
+			  double		 height_in_points);
+
+cairo_public cairo_surface_t *
+cairo_pdf_surface_create_for_stream (cairo_write_func_t	write_func,
+				     void	       *closure,
+				     double		width_in_points,
+				     double		height_in_points);
+
+cairo_public void
+cairo_pdf_surface_restrict_to_version (cairo_surface_t 		*surface,
+				       cairo_pdf_version_t  	 version);
+
+cairo_public void
+cairo_pdf_get_versions (cairo_pdf_version_t const	**versions,
+                        int                      	 *num_versions);
+
+cairo_public const char *
+cairo_pdf_version_to_string (cairo_pdf_version_t version);
+
+cairo_public void
+cairo_pdf_surface_set_size (cairo_surface_t	*surface,
+			    double		 width_in_points,
+			    double		 height_in_points);
+
+/**
+ * cairo_pdf_outline_flags_t:
+ * @CAIRO_PDF_OUTLINE_FLAG_OPEN: The outline item defaults to open in the PDF viewer (Since 1.16)
+ * @CAIRO_PDF_OUTLINE_FLAG_BOLD: The outline item is displayed by the viewer in bold text (Since 1.16)
+ * @CAIRO_PDF_OUTLINE_FLAG_ITALIC: The outline item is displayed by the viewer in italic text (Since 1.16)
+ *
+ * #cairo_pdf_outline_flags_t is used by the
+ * cairo_pdf_surface_add_outline() function specify the attributes of
+ * an outline item. These flags may be bitwise-or'd to produce any
+ * combination of flags.
+ *
+ * Since: 1.16
+ **/
+typedef enum _cairo_pdf_outline_flags {
+    CAIRO_PDF_OUTLINE_FLAG_OPEN   = 0x1,
+    CAIRO_PDF_OUTLINE_FLAG_BOLD   = 0x2,
+    CAIRO_PDF_OUTLINE_FLAG_ITALIC = 0x4,
+} cairo_pdf_outline_flags_t;
+
+#define CAIRO_PDF_OUTLINE_ROOT 0
+
+cairo_public int
+cairo_pdf_surface_add_outline (cairo_surface_t	          *surface,
+			       int                         parent_id,
+			       const char                 *utf8,
+			       const char                 *link_attribs,
+			       cairo_pdf_outline_flags_t  flags);
+
+/**
+ * cairo_pdf_metadata_t:
+ * @CAIRO_PDF_METADATA_TITLE: The document title (Since 1.16)
+ * @CAIRO_PDF_METADATA_AUTHOR: The document author (Since 1.16)
+ * @CAIRO_PDF_METADATA_SUBJECT: The document subject (Since 1.16)
+ * @CAIRO_PDF_METADATA_KEYWORDS: The document keywords (Since 1.16)
+ * @CAIRO_PDF_METADATA_CREATOR: The document creator (Since 1.16)
+ * @CAIRO_PDF_METADATA_CREATE_DATE: The document creation date (Since 1.16)
+ * @CAIRO_PDF_METADATA_MOD_DATE: The document modification date (Since 1.16)
+ *
+ * #cairo_pdf_metadata_t is used by the
+ * cairo_pdf_surface_set_metadata() function specify the metadata to set.
+ *
+ * Since: 1.16
+ **/
+typedef enum _cairo_pdf_metadata {
+    CAIRO_PDF_METADATA_TITLE,
+    CAIRO_PDF_METADATA_AUTHOR,
+    CAIRO_PDF_METADATA_SUBJECT,
+    CAIRO_PDF_METADATA_KEYWORDS,
+    CAIRO_PDF_METADATA_CREATOR,
+    CAIRO_PDF_METADATA_CREATE_DATE,
+    CAIRO_PDF_METADATA_MOD_DATE,
+} cairo_pdf_metadata_t;
+
+cairo_public void
+cairo_pdf_surface_set_metadata (cairo_surface_t	     *surface,
+				cairo_pdf_metadata_t  metadata,
+                                const char           *utf8);
+
+cairo_public void
+cairo_pdf_surface_set_page_label (cairo_surface_t *surface,
+                                  const char      *utf8);
+
+cairo_public void
+cairo_pdf_surface_set_thumbnail_size (cairo_surface_t *surface,
+				      int              width,
+				      int              height);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_PDF_SURFACE */
+# error Cairo was not compiled with support for the pdf backend
+#endif /* CAIRO_HAS_PDF_SURFACE */
+
+#endif /* CAIRO_PDF_H */
diff --git a/libs/cairo-1.16.0/src/cairo-pen.c b/libs/cairo-1.16.0/src/cairo-pen.c
new file mode 100644
index 0000000..9bf9604
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pen.c
@@ -0,0 +1,475 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-slope-private.h"
+
+static void
+_cairo_pen_compute_slopes (cairo_pen_t *pen);
+
+cairo_status_t
+_cairo_pen_init (cairo_pen_t	*pen,
+		 double		 radius,
+		 double		 tolerance,
+		 const cairo_matrix_t	*ctm)
+{
+    int i;
+    int reflect;
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pen, sizeof (cairo_pen_t)));
+
+    pen->radius = radius;
+    pen->tolerance = tolerance;
+
+    reflect = _cairo_matrix_compute_determinant (ctm) < 0.;
+
+    pen->num_vertices = _cairo_pen_vertices_needed (tolerance,
+						    radius,
+						    ctm);
+
+    if (pen->num_vertices > ARRAY_LENGTH (pen->vertices_embedded)) {
+	pen->vertices = _cairo_malloc_ab (pen->num_vertices,
+					  sizeof (cairo_pen_vertex_t));
+	if (unlikely (pen->vertices == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else {
+	pen->vertices = pen->vertices_embedded;
+    }
+
+    /*
+     * Compute pen coordinates.  To generate the right ellipse, compute points around
+     * a circle in user space and transform them to device space.  To get a consistent
+     * orientation in device space, flip the pen if the transformation matrix
+     * is reflecting
+     */
+    for (i=0; i < pen->num_vertices; i++) {
+	cairo_pen_vertex_t *v = &pen->vertices[i];
+	double theta = 2 * M_PI * i / (double) pen->num_vertices, dx, dy;
+	if (reflect)
+	    theta = -theta;
+	dx = radius * cos (theta);
+	dy = radius * sin (theta);
+	cairo_matrix_transform_distance (ctm, &dx, &dy);
+	v->point.x = _cairo_fixed_from_double (dx);
+	v->point.y = _cairo_fixed_from_double (dy);
+    }
+
+    _cairo_pen_compute_slopes (pen);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_pen_fini (cairo_pen_t *pen)
+{
+    if (pen->vertices != pen->vertices_embedded)
+	free (pen->vertices);
+
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pen, sizeof (cairo_pen_t)));
+}
+
+cairo_status_t
+_cairo_pen_init_copy (cairo_pen_t *pen, const cairo_pen_t *other)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pen, sizeof (cairo_pen_t)));
+
+    *pen = *other;
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    pen->vertices = pen->vertices_embedded;
+    if (pen->num_vertices) {
+	if (pen->num_vertices > ARRAY_LENGTH (pen->vertices_embedded)) {
+	    pen->vertices = _cairo_malloc_ab (pen->num_vertices,
+					      sizeof (cairo_pen_vertex_t));
+	    if (unlikely (pen->vertices == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	memcpy (pen->vertices, other->vertices,
+		pen->num_vertices * sizeof (cairo_pen_vertex_t));
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_pen_add_points (cairo_pen_t *pen, cairo_point_t *point, int num_points)
+{
+    cairo_status_t status;
+    int num_vertices;
+    int i;
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    num_vertices = pen->num_vertices + num_points;
+    if (num_vertices > ARRAY_LENGTH (pen->vertices_embedded) ||
+	pen->vertices != pen->vertices_embedded)
+    {
+	cairo_pen_vertex_t *vertices;
+
+	if (pen->vertices == pen->vertices_embedded) {
+	    vertices = _cairo_malloc_ab (num_vertices,
+		                         sizeof (cairo_pen_vertex_t));
+	    if (unlikely (vertices == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (vertices, pen->vertices,
+		    pen->num_vertices * sizeof (cairo_pen_vertex_t));
+	} else {
+	    vertices = _cairo_realloc_ab (pen->vertices,
+					  num_vertices,
+					  sizeof (cairo_pen_vertex_t));
+	    if (unlikely (vertices == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	pen->vertices = vertices;
+    }
+
+    pen->num_vertices = num_vertices;
+
+    /* initialize new vertices */
+    for (i=0; i < num_points; i++)
+	pen->vertices[pen->num_vertices-num_points+i].point = point[i];
+
+    status = _cairo_hull_compute (pen->vertices, &pen->num_vertices);
+    if (unlikely (status))
+	return status;
+
+    _cairo_pen_compute_slopes (pen);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+The circular pen in user space is transformed into an ellipse in
+device space.
+
+We construct the pen by computing points along the circumference
+using equally spaced angles.
+
+We show that this approximation to the ellipse has maximum error at the
+major axis of the ellipse.
+
+Set
+
+	    M = major axis length
+	    m = minor axis length
+
+Align 'M' along the X axis and 'm' along the Y axis and draw
+an ellipse parameterized by angle 't':
+
+	    x = M cos t			y = m sin t
+
+Perturb t by ± d and compute two new points (x+,y+), (x-,y-).
+The distance from the average of these two points to (x,y) represents
+the maximum error in approximating the ellipse with a polygon formed
+from vertices 2∆ radians apart.
+
+	    x+ = M cos (t+∆)		y+ = m sin (t+∆)
+	    x- = M cos (t-∆)		y- = m sin (t-∆)
+
+Now compute the approximation error, E:
+
+	Ex = (x - (x+ + x-) / 2)
+	Ex = (M cos(t) - (Mcos(t+∆) + Mcos(t-∆))/2)
+	   = M (cos(t) - (cos(t)cos(∆) + sin(t)sin(∆) +
+			  cos(t)cos(∆) - sin(t)sin(∆))/2)
+	   = M(cos(t) - cos(t)cos(∆))
+	   = M cos(t) (1 - cos(∆))
+
+	Ey = y - (y+ - y-) / 2
+	   = m sin (t) - (m sin(t+∆) + m sin(t-∆)) / 2
+	   = m (sin(t) - (sin(t)cos(∆) + cos(t)sin(∆) +
+			  sin(t)cos(∆) - cos(t)sin(∆))/2)
+	   = m (sin(t) - sin(t)cos(∆))
+	   = m sin(t) (1 - cos(∆))
+
+	E² = Ex² + Ey²
+	   = (M cos(t) (1 - cos (∆)))² + (m sin(t) (1-cos(∆)))²
+	   = (1 - cos(∆))² (M² cos²(t) + m² sin²(t))
+	   = (1 - cos(∆))² ((m² + M² - m²) cos² (t) + m² sin²(t))
+	   = (1 - cos(∆))² (M² - m²) cos² (t) + (1 - cos(∆))² m²
+
+Find the extremum by differentiation wrt t and setting that to zero
+
+∂(E²)/∂(t) = (1-cos(∆))² (M² - m²) (-2 cos(t) sin(t))
+
+         0 = 2 cos (t) sin (t)
+	 0 = sin (2t)
+	 t = nπ
+
+Which is to say that the maximum and minimum errors occur on the
+axes of the ellipse at 0 and π radians:
+
+	E²(0) = (1-cos(∆))² (M² - m²) + (1-cos(∆))² m²
+	      = (1-cos(∆))² M²
+	E²(π) = (1-cos(∆))² m²
+
+maximum error = M (1-cos(∆))
+minimum error = m (1-cos(∆))
+
+We must make maximum error ≤ tolerance, so compute the ∆ needed:
+
+	    tolerance = M (1-cos(∆))
+	tolerance / M = 1 - cos (∆)
+	       cos(∆) = 1 - tolerance/M
+                    ∆ = acos (1 - tolerance / M);
+
+Remembering that ∆ is half of our angle between vertices,
+the number of vertices is then
+
+             vertices = ceil(2π/2∆).
+                      = ceil(π/∆).
+
+Note that this also equation works for M == m (a circle) as it
+doesn't matter where on the circle the error is computed.
+*/
+
+int
+_cairo_pen_vertices_needed (double	    tolerance,
+			    double	    radius,
+			    const cairo_matrix_t  *matrix)
+{
+    /*
+     * the pen is a circle that gets transformed to an ellipse by matrix.
+     * compute major axis length for a pen with the specified radius.
+     * we don't need the minor axis length.
+     */
+    double major_axis = _cairo_matrix_transformed_circle_major_axis (matrix,
+								     radius);
+    int num_vertices;
+
+    if (tolerance >= 4*major_axis) { /* XXX relaxed from 2*major for inkscape */
+	num_vertices = 1;
+    } else if (tolerance >= major_axis) {
+	num_vertices = 4;
+    } else {
+	num_vertices = ceil (2*M_PI / acos (1 - tolerance / major_axis));
+
+	/* number of vertices must be even */
+	if (num_vertices % 2)
+	    num_vertices++;
+
+	/* And we must always have at least 4 vertices. */
+	if (num_vertices < 4)
+	    num_vertices = 4;
+    }
+
+    return num_vertices;
+}
+
+static void
+_cairo_pen_compute_slopes (cairo_pen_t *pen)
+{
+    int i, i_prev;
+    cairo_pen_vertex_t *prev, *v, *next;
+
+    for (i=0, i_prev = pen->num_vertices - 1;
+	 i < pen->num_vertices;
+	 i_prev = i++) {
+	prev = &pen->vertices[i_prev];
+	v = &pen->vertices[i];
+	next = &pen->vertices[(i + 1) % pen->num_vertices];
+
+	_cairo_slope_init (&v->slope_cw, &prev->point, &v->point);
+	_cairo_slope_init (&v->slope_ccw, &v->point, &next->point);
+    }
+}
+/*
+ * Find active pen vertex for clockwise edge of stroke at the given slope.
+ *
+ * The strictness of the inequalities here is delicate. The issue is
+ * that the slope_ccw member of one pen vertex will be equivalent to
+ * the slope_cw member of the next pen vertex in a counterclockwise
+ * order. However, for this function, we care strongly about which
+ * vertex is returned.
+ *
+ * [I think the "care strongly" above has to do with ensuring that the
+ * pen's "extra points" from the spline's initial and final slopes are
+ * properly found when beginning the spline stroking.]
+ */
+int
+_cairo_pen_find_active_cw_vertex_index (const cairo_pen_t *pen,
+					const cairo_slope_t *slope)
+{
+    int i;
+
+    for (i=0; i < pen->num_vertices; i++) {
+	if ((_cairo_slope_compare (slope, &pen->vertices[i].slope_ccw) < 0) &&
+	    (_cairo_slope_compare (slope, &pen->vertices[i].slope_cw) >= 0))
+	    break;
+    }
+
+    /* If the desired slope cannot be found between any of the pen
+     * vertices, then we must have a degenerate pen, (such as a pen
+     * that's been transformed to a line). In that case, we consider
+     * the first pen vertex as the appropriate clockwise vertex.
+     */
+    if (i == pen->num_vertices)
+	i = 0;
+
+    return i;
+}
+
+/* Find active pen vertex for counterclockwise edge of stroke at the given slope.
+ *
+ * Note: See the comments for _cairo_pen_find_active_cw_vertex_index
+ * for some details about the strictness of the inequalities here.
+ */
+int
+_cairo_pen_find_active_ccw_vertex_index (const cairo_pen_t *pen,
+					 const cairo_slope_t *slope)
+{
+    cairo_slope_t slope_reverse;
+    int i;
+
+    slope_reverse = *slope;
+    slope_reverse.dx = -slope_reverse.dx;
+    slope_reverse.dy = -slope_reverse.dy;
+
+    for (i=pen->num_vertices-1; i >= 0; i--) {
+	if ((_cairo_slope_compare (&pen->vertices[i].slope_ccw, &slope_reverse) >= 0) &&
+	    (_cairo_slope_compare (&pen->vertices[i].slope_cw, &slope_reverse) < 0))
+	    break;
+    }
+
+    /* If the desired slope cannot be found between any of the pen
+     * vertices, then we must have a degenerate pen, (such as a pen
+     * that's been transformed to a line). In that case, we consider
+     * the last pen vertex as the appropriate counterclockwise vertex.
+     */
+    if (i < 0)
+	i = pen->num_vertices - 1;
+
+    return i;
+}
+
+void
+_cairo_pen_find_active_cw_vertices (const cairo_pen_t *pen,
+				    const cairo_slope_t *in,
+				    const cairo_slope_t *out,
+				    int *start, int *stop)
+{
+
+    int lo = 0, hi = pen->num_vertices;
+    int i;
+
+    i = (lo + hi) >> 1;
+    do {
+	if (_cairo_slope_compare (&pen->vertices[i].slope_cw, in) < 0)
+	    lo = i;
+	else
+	    hi = i;
+	i = (lo + hi) >> 1;
+    } while (hi - lo > 1);
+    if (_cairo_slope_compare (&pen->vertices[i].slope_cw, in) < 0)
+	if (++i == pen->num_vertices)
+	    i = 0;
+    *start = i;
+
+    if (_cairo_slope_compare (out, &pen->vertices[i].slope_ccw) >= 0) {
+	lo = i;
+	hi = i + pen->num_vertices;
+	i = (lo + hi) >> 1;
+	do {
+	    int j = i;
+	    if (j >= pen->num_vertices)
+		j -= pen->num_vertices;
+	    if (_cairo_slope_compare (&pen->vertices[j].slope_cw, out) > 0)
+		hi = i;
+	    else
+		lo = i;
+	    i = (lo + hi) >> 1;
+	} while (hi - lo > 1);
+	if (i >= pen->num_vertices)
+	    i -= pen->num_vertices;
+    }
+    *stop = i;
+}
+
+void
+_cairo_pen_find_active_ccw_vertices (const cairo_pen_t *pen,
+				     const cairo_slope_t *in,
+				     const cairo_slope_t *out,
+				     int *start, int *stop)
+{
+    int lo = 0, hi = pen->num_vertices;
+    int i;
+
+    i = (lo + hi) >> 1;
+    do {
+	if (_cairo_slope_compare (in, &pen->vertices[i].slope_ccw) < 0)
+	    lo = i;
+	else
+	    hi = i;
+	i = (lo + hi) >> 1;
+    } while (hi - lo > 1);
+    if (_cairo_slope_compare (in, &pen->vertices[i].slope_ccw) < 0)
+	if (++i == pen->num_vertices)
+	    i = 0;
+    *start = i;
+
+    if (_cairo_slope_compare (&pen->vertices[i].slope_cw, out) <= 0) {
+	lo = i;
+	hi = i + pen->num_vertices;
+	i = (lo + hi) >> 1;
+	do {
+	    int j = i;
+	    if (j >= pen->num_vertices)
+		j -= pen->num_vertices;
+	    if (_cairo_slope_compare (out, &pen->vertices[j].slope_ccw) > 0)
+		hi = i;
+	    else
+		lo = i;
+	    i = (lo + hi) >> 1;
+	} while (hi - lo > 1);
+	if (i >= pen->num_vertices)
+	    i -= pen->num_vertices;
+    }
+    *stop = i;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-pixman-private.h b/libs/cairo-1.16.0/src/cairo-pixman-private.h
new file mode 100644
index 0000000..d705025
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-pixman-private.h
@@ -0,0 +1,51 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright ©2013 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_PIXMAN_PRIVATE_H
+#define CAIRO_PIXMAN_PRIVATE_H
+
+#include "cairo-pixman-private.h" /* keep make check happy */
+
+#include <pixman.h>
+
+#if PIXMAN_VERSION < PIXMAN_VERSION_ENCODE(0,22,0)
+#define pixman_image_composite32 pixman_image_composite
+#define pixman_image_get_component_alpha(i) 0
+#define pixman_image_set_component_alpha(i, x) do { } while (0)
+#endif
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-png.c b/libs/cairo-1.16.0/src/cairo-png.c
new file mode 100644
index 0000000..ab0b9d0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-png.c
@@ -0,0 +1,833 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-output-stream-private.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include <png.h>
+
+/**
+ * SECTION:cairo-png
+ * @Title: PNG Support
+ * @Short_Description: Reading and writing PNG images
+ * @See_Also: #cairo_surface_t
+ *
+ * The PNG functions allow reading PNG images into image surfaces, and writing
+ * any surface to a PNG file.
+ *
+ * It is a toy API. It only offers very simple support for reading and
+ * writing PNG files, which is sufficient for testing and
+ * demonstration purposes. Applications which need more control over
+ * the generated PNG file should access the pixel data directly, using
+ * cairo_image_surface_get_data() or a backend-specific access
+ * function, and process it with another library, e.g. gdk-pixbuf or
+ * libpng.
+ **/
+
+/**
+ * CAIRO_HAS_PNG_FUNCTIONS:
+ *
+ * Defined if the PNG functions are available.
+ * This macro can be used to conditionally compile code using the cairo
+ * PNG functions.
+ *
+ * Since: 1.0
+ **/
+
+struct png_read_closure_t {
+    cairo_read_func_t		 read_func;
+    void			*closure;
+    cairo_output_stream_t	*png_data;
+};
+
+
+/* Unpremultiplies data and converts native endian ARGB => RGBA bytes */
+static void
+unpremultiply_data (png_structp png, png_row_infop row_info, png_bytep data)
+{
+    unsigned int i;
+
+    for (i = 0; i < row_info->rowbytes; i += 4) {
+        uint8_t *b = &data[i];
+        uint32_t pixel;
+        uint8_t  alpha;
+
+	memcpy (&pixel, b, sizeof (uint32_t));
+	alpha = (pixel & 0xff000000) >> 24;
+        if (alpha == 0) {
+	    b[0] = b[1] = b[2] = b[3] = 0;
+	} else {
+            b[0] = (((pixel & 0xff0000) >> 16) * 255 + alpha / 2) / alpha;
+            b[1] = (((pixel & 0x00ff00) >>  8) * 255 + alpha / 2) / alpha;
+            b[2] = (((pixel & 0x0000ff) >>  0) * 255 + alpha / 2) / alpha;
+	    b[3] = alpha;
+	}
+    }
+}
+
+/* Converts native endian xRGB => RGBx bytes */
+static void
+convert_data_to_bytes (png_structp png, png_row_infop row_info, png_bytep data)
+{
+    unsigned int i;
+
+    for (i = 0; i < row_info->rowbytes; i += 4) {
+        uint8_t *b = &data[i];
+        uint32_t pixel;
+
+	memcpy (&pixel, b, sizeof (uint32_t));
+
+	b[0] = (pixel & 0xff0000) >> 16;
+	b[1] = (pixel & 0x00ff00) >>  8;
+	b[2] = (pixel & 0x0000ff) >>  0;
+	b[3] = 0;
+    }
+}
+
+/* Use a couple of simple error callbacks that do not print anything to
+ * stderr and rely on the user to check for errors via the #cairo_status_t
+ * return.
+ */
+static void
+png_simple_error_callback (png_structp png,
+	                   png_const_charp error_msg)
+{
+    cairo_status_t *error = png_get_error_ptr (png);
+
+    /* default to the most likely error */
+    if (*error == CAIRO_STATUS_SUCCESS)
+	*error = _cairo_error (CAIRO_STATUS_PNG_ERROR);
+
+#ifdef PNG_SETJMP_SUPPORTED
+    longjmp (png_jmpbuf (png), 1);
+#endif
+
+    /* if we get here, then we have to choice but to abort ... */
+}
+
+static void
+png_simple_warning_callback (png_structp png,
+	                     png_const_charp error_msg)
+{
+    /* png does not expect to abort and will try to tidy up and continue
+     * loading the image after a warning. So we also want to return the
+     * (incorrect?) surface.
+     *
+     * We use our own warning callback to squelch any attempts by libpng
+     * to write to stderr as we may not be in control of that output.
+     */
+}
+
+
+/* Starting with libpng-1.2.30, we must explicitly specify an output_flush_fn.
+ * Otherwise, we will segfault if we are writing to a stream. */
+static void
+png_simple_output_flush_fn (png_structp png_ptr)
+{
+}
+
+static cairo_status_t
+write_png (cairo_surface_t	*surface,
+	   png_rw_ptr		write_func,
+	   void			*closure)
+{
+    int i;
+    cairo_int_status_t status;
+    cairo_image_surface_t *image;
+    cairo_image_surface_t * volatile clone;
+    void *image_extra;
+    png_struct *png;
+    png_info *info;
+    png_byte **volatile rows = NULL;
+    png_color_16 white;
+    int png_color_type;
+    int bpc;
+
+    status = _cairo_surface_acquire_source_image (surface,
+						  &image,
+						  &image_extra);
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    else if (unlikely (status))
+        return status;
+
+    /* PNG complains about "Image width or height is zero in IHDR" */
+    if (image->width == 0 || image->height == 0) {
+	status = _cairo_error (CAIRO_STATUS_WRITE_ERROR);
+	goto BAIL1;
+    }
+
+    /* Handle the various fallback formats (e.g. low bit-depth XServers)
+     * by coercing them to a simpler format using pixman.
+     */
+    clone = _cairo_image_surface_coerce (image);
+    status = clone->base.status;
+    if (unlikely (status))
+        goto BAIL1;
+
+    rows = _cairo_malloc_ab (clone->height, sizeof (png_byte*));
+    if (unlikely (rows == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto BAIL2;
+    }
+
+    for (i = 0; i < clone->height; i++)
+	rows[i] = (png_byte *) clone->data + i * clone->stride;
+
+    png = png_create_write_struct (PNG_LIBPNG_VER_STRING, &status,
+	                           png_simple_error_callback,
+	                           png_simple_warning_callback);
+    if (unlikely (png == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto BAIL3;
+    }
+
+    info = png_create_info_struct (png);
+    if (unlikely (info == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto BAIL4;
+    }
+
+#ifdef PNG_SETJMP_SUPPORTED
+    if (setjmp (png_jmpbuf (png)))
+	goto BAIL4;
+#endif
+
+    png_set_write_fn (png, closure, write_func, png_simple_output_flush_fn);
+
+    switch (clone->format) {
+    case CAIRO_FORMAT_ARGB32:
+	bpc = 8;
+	if (_cairo_image_analyze_transparency (clone) == CAIRO_IMAGE_IS_OPAQUE)
+	    png_color_type = PNG_COLOR_TYPE_RGB;
+	else
+	    png_color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+	break;
+    case CAIRO_FORMAT_RGB30:
+	bpc = 10;
+	png_color_type = PNG_COLOR_TYPE_RGB;
+	break;
+    case CAIRO_FORMAT_RGB24:
+	bpc = 8;
+	png_color_type = PNG_COLOR_TYPE_RGB;
+	break;
+    case CAIRO_FORMAT_A8:
+	bpc = 8;
+	png_color_type = PNG_COLOR_TYPE_GRAY;
+	break;
+    case CAIRO_FORMAT_A1:
+	bpc = 1;
+	png_color_type = PNG_COLOR_TYPE_GRAY;
+#ifndef WORDS_BIGENDIAN
+	png_set_packswap (png);
+#endif
+	break;
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_RGB16_565:
+    default:
+	status = _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+	goto BAIL4;
+    }
+
+    png_set_IHDR (png, info,
+		  clone->width,
+		  clone->height, bpc,
+		  png_color_type,
+		  PNG_INTERLACE_NONE,
+		  PNG_COMPRESSION_TYPE_DEFAULT,
+		  PNG_FILTER_TYPE_DEFAULT);
+
+    white.gray = (1 << bpc) - 1;
+    white.red = white.blue = white.green = white.gray;
+    png_set_bKGD (png, info, &white);
+
+    if (0) { /* XXX extract meta-data from surface (i.e. creation date) */
+	png_time pt;
+
+	png_convert_from_time_t (&pt, time (NULL));
+	png_set_tIME (png, info, &pt);
+    }
+
+    /* We have to call png_write_info() before setting up the write
+     * transformation, since it stores data internally in 'png'
+     * that is needed for the write transformation functions to work.
+     */
+    png_write_info (png, info);
+
+    if (png_color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
+	png_set_write_user_transform_fn (png, unpremultiply_data);
+    } else if (png_color_type == PNG_COLOR_TYPE_RGB) {
+	png_set_write_user_transform_fn (png, convert_data_to_bytes);
+	png_set_filler (png, 0, PNG_FILLER_AFTER);
+    }
+
+    png_write_image (png, rows);
+    png_write_end (png, info);
+
+BAIL4:
+    png_destroy_write_struct (&png, &info);
+BAIL3:
+    free (rows);
+BAIL2:
+    cairo_surface_destroy (&clone->base);
+BAIL1:
+    _cairo_surface_release_source_image (surface, image, image_extra);
+
+    return status;
+}
+
+static void
+stdio_write_func (png_structp png, png_bytep data, png_size_t size)
+{
+    FILE *fp;
+
+    fp = png_get_io_ptr (png);
+    while (size) {
+	size_t ret = fwrite (data, 1, size, fp);
+	size -= ret;
+	data += ret;
+	if (size && ferror (fp)) {
+	    cairo_status_t *error = png_get_error_ptr (png);
+	    if (*error == CAIRO_STATUS_SUCCESS)
+		*error = _cairo_error (CAIRO_STATUS_WRITE_ERROR);
+	    png_error (png, NULL);
+	}
+    }
+}
+
+/**
+ * cairo_surface_write_to_png:
+ * @surface: a #cairo_surface_t with pixel contents
+ * @filename: the name of a file to write to; on Windows this filename
+ *   is encoded in UTF-8.
+ *
+ * Writes the contents of @surface to a new file @filename as a PNG
+ * image.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the PNG file was written
+ * successfully. Otherwise, %CAIRO_STATUS_NO_MEMORY if memory could not
+ * be allocated for the operation or
+ * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface does not have
+ * pixel contents, or %CAIRO_STATUS_WRITE_ERROR if an I/O error occurs
+ * while attempting to write the file, or %CAIRO_STATUS_PNG_ERROR if libpng
+ * returned an error.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_surface_write_to_png (cairo_surface_t	*surface,
+			    const char		*filename)
+{
+    FILE *fp;
+    cairo_status_t status;
+
+    if (surface->status)
+	return surface->status;
+
+    if (surface->finished)
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    status = _cairo_fopen (filename, "wb", &fp);
+
+    if (status != CAIRO_STATUS_SUCCESS)
+	return _cairo_error (status);
+
+    if (fp == NULL) {
+	switch (errno) {
+	case ENOMEM:
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	default:
+	    return _cairo_error (CAIRO_STATUS_WRITE_ERROR);
+	}
+    }
+
+    status = write_png (surface, stdio_write_func, fp);
+
+    if (fclose (fp) && status == CAIRO_STATUS_SUCCESS)
+	status = _cairo_error (CAIRO_STATUS_WRITE_ERROR);
+
+    return status;
+}
+
+struct png_write_closure_t {
+    cairo_write_func_t		 write_func;
+    void			*closure;
+};
+
+static void
+stream_write_func (png_structp png, png_bytep data, png_size_t size)
+{
+    cairo_status_t status;
+    struct png_write_closure_t *png_closure;
+
+    png_closure = png_get_io_ptr (png);
+    status = png_closure->write_func (png_closure->closure, data, size);
+    if (unlikely (status)) {
+	cairo_status_t *error = png_get_error_ptr (png);
+	if (*error == CAIRO_STATUS_SUCCESS)
+	    *error = status;
+	png_error (png, NULL);
+    }
+}
+
+/**
+ * cairo_surface_write_to_png_stream:
+ * @surface: a #cairo_surface_t with pixel contents
+ * @write_func: a #cairo_write_func_t
+ * @closure: closure data for the write function
+ *
+ * Writes the image surface to the write function.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the PNG file was written
+ * successfully.  Otherwise, %CAIRO_STATUS_NO_MEMORY is returned if
+ * memory could not be allocated for the operation,
+ * %CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface does not have
+ * pixel contents, or %CAIRO_STATUS_PNG_ERROR if libpng
+ * returned an error.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_surface_write_to_png_stream (cairo_surface_t	*surface,
+				   cairo_write_func_t	write_func,
+				   void			*closure)
+{
+    struct png_write_closure_t png_closure;
+
+    if (surface->status)
+	return surface->status;
+
+    if (surface->finished)
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    png_closure.write_func = write_func;
+    png_closure.closure = closure;
+
+    return write_png (surface, stream_write_func, &png_closure);
+}
+slim_hidden_def (cairo_surface_write_to_png_stream);
+
+static inline int
+multiply_alpha (int alpha, int color)
+{
+    int temp = (alpha * color) + 0x80;
+    return ((temp + (temp >> 8)) >> 8);
+}
+
+/* Premultiplies data and converts RGBA bytes => native endian */
+static void
+premultiply_data (png_structp   png,
+                  png_row_infop row_info,
+                  png_bytep     data)
+{
+    unsigned int i;
+
+    for (i = 0; i < row_info->rowbytes; i += 4) {
+	uint8_t *base  = &data[i];
+	uint8_t  alpha = base[3];
+	uint32_t p;
+
+	if (alpha == 0) {
+	    p = 0;
+	} else {
+	    uint8_t  red   = base[0];
+	    uint8_t  green = base[1];
+	    uint8_t  blue  = base[2];
+
+	    if (alpha != 0xff) {
+		red   = multiply_alpha (alpha, red);
+		green = multiply_alpha (alpha, green);
+		blue  = multiply_alpha (alpha, blue);
+	    }
+	    p = (alpha << 24) | (red << 16) | (green << 8) | (blue << 0);
+	}
+	memcpy (base, &p, sizeof (uint32_t));
+    }
+}
+
+/* Converts RGBx bytes to native endian xRGB */
+static void
+convert_bytes_to_data (png_structp png, png_row_infop row_info, png_bytep data)
+{
+    unsigned int i;
+
+    for (i = 0; i < row_info->rowbytes; i += 4) {
+	uint8_t *base  = &data[i];
+	uint8_t  red   = base[0];
+	uint8_t  green = base[1];
+	uint8_t  blue  = base[2];
+	uint32_t pixel;
+
+	pixel = (0xff << 24) | (red << 16) | (green << 8) | (blue << 0);
+	memcpy (base, &pixel, sizeof (uint32_t));
+    }
+}
+
+static cairo_status_t
+stdio_read_func (void *closure, unsigned char *data, unsigned int size)
+{
+    FILE *file = closure;
+
+    while (size) {
+	size_t ret;
+
+	ret = fread (data, 1, size, file);
+	size -= ret;
+	data += ret;
+
+	if (size && (feof (file) || ferror (file)))
+	    return _cairo_error (CAIRO_STATUS_READ_ERROR);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+stream_read_func (png_structp png, png_bytep data, png_size_t size)
+{
+    cairo_status_t status;
+    struct png_read_closure_t *png_closure;
+
+    png_closure = png_get_io_ptr (png);
+    status = png_closure->read_func (png_closure->closure, data, size);
+    if (unlikely (status)) {
+	cairo_status_t *error = png_get_error_ptr (png);
+	if (*error == CAIRO_STATUS_SUCCESS)
+	    *error = status;
+	png_error (png, NULL);
+    }
+
+    _cairo_output_stream_write (png_closure->png_data, data, size);
+}
+
+static cairo_surface_t *
+read_png (struct png_read_closure_t *png_closure)
+{
+    cairo_surface_t * volatile surface;
+    png_struct *png = NULL;
+    png_info *info;
+    png_byte * volatile data = NULL;
+    png_byte ** volatile row_pointers = NULL;
+    png_uint_32 png_width, png_height;
+    int depth, color_type, interlace, stride;
+    unsigned int i;
+    cairo_format_t format;
+    cairo_status_t status;
+    unsigned char *mime_data;
+    unsigned long mime_data_length;
+
+    png_closure->png_data = _cairo_memory_stream_create ();
+
+    /* XXX: Perhaps we'll want some other error handlers? */
+    png = png_create_read_struct (PNG_LIBPNG_VER_STRING,
+                                  &status,
+	                          png_simple_error_callback,
+	                          png_simple_warning_callback);
+    if (unlikely (png == NULL)) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	goto BAIL;
+    }
+
+    info = png_create_info_struct (png);
+    if (unlikely (info == NULL)) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	goto BAIL;
+    }
+
+    png_set_read_fn (png, png_closure, stream_read_func);
+
+    status = CAIRO_STATUS_SUCCESS;
+#ifdef PNG_SETJMP_SUPPORTED
+    if (setjmp (png_jmpbuf (png))) {
+	surface = _cairo_surface_create_in_error (status);
+	goto BAIL;
+    }
+#endif
+
+    png_read_info (png, info);
+
+    png_get_IHDR (png, info,
+                  &png_width, &png_height, &depth,
+                  &color_type, &interlace, NULL, NULL);
+    if (unlikely (status)) { /* catch any early warnings */
+	surface = _cairo_surface_create_in_error (status);
+	goto BAIL;
+    }
+
+    /* convert palette/gray image to rgb */
+    if (color_type == PNG_COLOR_TYPE_PALETTE)
+        png_set_palette_to_rgb (png);
+
+    /* expand gray bit depth if needed */
+    if (color_type == PNG_COLOR_TYPE_GRAY) {
+#if PNG_LIBPNG_VER >= 10209
+        png_set_expand_gray_1_2_4_to_8 (png);
+#else
+        png_set_gray_1_2_4_to_8 (png);
+#endif
+    }
+
+    /* transform transparency to alpha */
+    if (png_get_valid (png, info, PNG_INFO_tRNS))
+        png_set_tRNS_to_alpha (png);
+
+    if (depth == 16)
+        png_set_strip_16 (png);
+
+    if (depth < 8)
+        png_set_packing (png);
+
+    /* convert grayscale to RGB */
+    if (color_type == PNG_COLOR_TYPE_GRAY ||
+	color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+    {
+	png_set_gray_to_rgb (png);
+    }
+
+    if (interlace != PNG_INTERLACE_NONE)
+        png_set_interlace_handling (png);
+
+    png_set_filler (png, 0xff, PNG_FILLER_AFTER);
+
+    /* recheck header after setting EXPAND options */
+    png_read_update_info (png, info);
+    png_get_IHDR (png, info,
+                  &png_width, &png_height, &depth,
+                  &color_type, &interlace, NULL, NULL);
+    if (depth != 8 ||
+	! (color_type == PNG_COLOR_TYPE_RGB ||
+	   color_type == PNG_COLOR_TYPE_RGB_ALPHA))
+    {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_READ_ERROR));
+	goto BAIL;
+    }
+
+    switch (color_type) {
+	default:
+	    ASSERT_NOT_REACHED;
+	    /* fall-through just in case ;-) */
+
+	case PNG_COLOR_TYPE_RGB_ALPHA:
+	    format = CAIRO_FORMAT_ARGB32;
+	    png_set_read_user_transform_fn (png, premultiply_data);
+	    break;
+
+	case PNG_COLOR_TYPE_RGB:
+	    format = CAIRO_FORMAT_RGB24;
+	    png_set_read_user_transform_fn (png, convert_bytes_to_data);
+	    break;
+    }
+
+    stride = cairo_format_stride_for_width (format, png_width);
+    if (stride < 0) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+	goto BAIL;
+    }
+
+    data = _cairo_malloc_ab (png_height, stride);
+    if (unlikely (data == NULL)) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	goto BAIL;
+    }
+
+    row_pointers = _cairo_malloc_ab (png_height, sizeof (char *));
+    if (unlikely (row_pointers == NULL)) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	goto BAIL;
+    }
+
+    for (i = 0; i < png_height; i++)
+        row_pointers[i] = &data[i * (ptrdiff_t)stride];
+
+    png_read_image (png, row_pointers);
+    png_read_end (png, info);
+
+    if (unlikely (status)) { /* catch any late warnings - probably hit an error already */
+	surface = _cairo_surface_create_in_error (status);
+	goto BAIL;
+    }
+
+    surface = cairo_image_surface_create_for_data (data, format,
+						   png_width, png_height,
+						   stride);
+    if (surface->status)
+	goto BAIL;
+
+    _cairo_image_surface_assume_ownership_of_data ((cairo_image_surface_t*)surface);
+    data = NULL;
+
+    _cairo_debug_check_image_surface_is_defined (surface);
+
+    status = _cairo_memory_stream_destroy (png_closure->png_data,
+					   &mime_data,
+					   &mime_data_length);
+    png_closure->png_data = NULL;
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+	goto BAIL;
+    }
+
+    status = cairo_surface_set_mime_data (surface,
+					  CAIRO_MIME_TYPE_PNG,
+					  mime_data,
+					  mime_data_length,
+					  free,
+					  mime_data);
+    if (unlikely (status)) {
+	free (mime_data);
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+	goto BAIL;
+    }
+
+ BAIL:
+    free (row_pointers);
+    free (data);
+    if (png != NULL)
+	png_destroy_read_struct (&png, &info, NULL);
+    if (png_closure->png_data != NULL) {
+	cairo_status_t status_ignored;
+
+	status_ignored = _cairo_output_stream_destroy (png_closure->png_data);
+    }
+
+    return surface;
+}
+
+/**
+ * cairo_image_surface_create_from_png:
+ * @filename: name of PNG file to load. On Windows this filename
+ *   is encoded in UTF-8.
+ *
+ * Creates a new image surface and initializes the contents to the
+ * given PNG file.
+ *
+ * Return value: a new #cairo_surface_t initialized with the contents
+ * of the PNG file, or a "nil" surface if any error occurred. A nil
+ * surface can be checked for with cairo_surface_status(surface) which
+ * may return one of the following values:
+ *
+ *	%CAIRO_STATUS_NO_MEMORY
+ *	%CAIRO_STATUS_FILE_NOT_FOUND
+ *	%CAIRO_STATUS_READ_ERROR
+ *	%CAIRO_STATUS_PNG_ERROR
+ *
+ * Alternatively, you can allow errors to propagate through the drawing
+ * operations and check the status on the context upon completion
+ * using cairo_status().
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_image_surface_create_from_png (const char *filename)
+{
+    struct png_read_closure_t png_closure;
+    cairo_surface_t *surface;
+    cairo_status_t status;
+
+    status = _cairo_fopen (filename, "rb", (FILE **) &png_closure.closure);
+
+    if (status != CAIRO_STATUS_SUCCESS)
+	return _cairo_surface_create_in_error (status);
+
+    if (png_closure.closure == NULL) {
+	switch (errno) {
+	case ENOMEM:
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    break;
+	case ENOENT:
+	    status = _cairo_error (CAIRO_STATUS_FILE_NOT_FOUND);
+	    break;
+	default:
+	    status = _cairo_error (CAIRO_STATUS_READ_ERROR);
+	    break;
+	}
+	return _cairo_surface_create_in_error (status);
+    }
+
+    png_closure.read_func = stdio_read_func;
+
+    surface = read_png (&png_closure);
+
+    fclose (png_closure.closure);
+
+    return surface;
+}
+
+/**
+ * cairo_image_surface_create_from_png_stream:
+ * @read_func: function called to read the data of the file
+ * @closure: data to pass to @read_func.
+ *
+ * Creates a new image surface from PNG data read incrementally
+ * via the @read_func function.
+ *
+ * Return value: a new #cairo_surface_t initialized with the contents
+ * of the PNG file or a "nil" surface if the data read is not a valid PNG image
+ * or memory could not be allocated for the operation.  A nil
+ * surface can be checked for with cairo_surface_status(surface) which
+ * may return one of the following values:
+ *
+ *	%CAIRO_STATUS_NO_MEMORY
+ *	%CAIRO_STATUS_READ_ERROR
+ *	%CAIRO_STATUS_PNG_ERROR
+ *
+ * Alternatively, you can allow errors to propagate through the drawing
+ * operations and check the status on the context upon completion
+ * using cairo_status().
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_image_surface_create_from_png_stream (cairo_read_func_t	read_func,
+					    void		*closure)
+{
+    struct png_read_closure_t png_closure;
+
+    png_closure.read_func = read_func;
+    png_closure.closure = closure;
+
+    return read_png (&png_closure);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-polygon-intersect.c b/libs/cairo-1.16.0/src/cairo-polygon-intersect.c
new file mode 100644
index 0000000..001e55e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-polygon-intersect.c
@@ -0,0 +1,1472 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-combsort-inline.h"
+
+
+typedef struct _cairo_bo_intersect_ordinate {
+    int32_t ordinate;
+    enum { EXCESS = -1, EXACT = 0, DEFAULT = 1 } approx;
+} cairo_bo_intersect_ordinate_t;
+
+typedef struct _cairo_bo_intersect_point {
+    cairo_bo_intersect_ordinate_t x;
+    cairo_bo_intersect_ordinate_t y;
+} cairo_bo_intersect_point_t;
+
+typedef struct _cairo_bo_edge cairo_bo_edge_t;
+
+typedef struct _cairo_bo_deferred {
+    cairo_bo_edge_t *other;
+    int32_t top;
+} cairo_bo_deferred_t;
+
+struct _cairo_bo_edge {
+    int a_or_b;
+    cairo_edge_t edge;
+    cairo_bo_edge_t *prev;
+    cairo_bo_edge_t *next;
+    cairo_bo_deferred_t deferred;
+};
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef enum {
+    CAIRO_BO_EVENT_TYPE_STOP = -1,
+    CAIRO_BO_EVENT_TYPE_INTERSECTION,
+    CAIRO_BO_EVENT_TYPE_START
+} cairo_bo_event_type_t;
+
+typedef struct _cairo_bo_event {
+    cairo_bo_event_type_t type;
+    cairo_bo_intersect_point_t point;
+} cairo_bo_event_t;
+
+typedef struct _cairo_bo_start_event {
+    cairo_bo_event_type_t type;
+    cairo_bo_intersect_point_t point;
+    cairo_bo_edge_t edge;
+} cairo_bo_start_event_t;
+
+typedef struct _cairo_bo_queue_event {
+    cairo_bo_event_type_t type;
+    cairo_bo_intersect_point_t point;
+    cairo_bo_edge_t *e1;
+    cairo_bo_edge_t *e2;
+} cairo_bo_queue_event_t;
+
+typedef struct _pqueue {
+    int size, max_size;
+
+    cairo_bo_event_t **elements;
+    cairo_bo_event_t *elements_embedded[1024];
+} pqueue_t;
+
+typedef struct _cairo_bo_event_queue {
+    cairo_freepool_t pool;
+    pqueue_t pqueue;
+    cairo_bo_event_t **start_events;
+} cairo_bo_event_queue_t;
+
+typedef struct _cairo_bo_sweep_line {
+    cairo_bo_edge_t *head;
+    int32_t current_y;
+    cairo_bo_edge_t *current_edge;
+} cairo_bo_sweep_line_t;
+
+static cairo_fixed_t
+_line_compute_intersection_x_for_y (const cairo_line_t *line,
+				    cairo_fixed_t y)
+{
+    cairo_fixed_t x, dy;
+
+    if (y == line->p1.y)
+	return line->p1.x;
+    if (y == line->p2.y)
+	return line->p2.x;
+
+    x = line->p1.x;
+    dy = line->p2.y - line->p1.y;
+    if (dy != 0) {
+	x += _cairo_fixed_mul_div_floor (y - line->p1.y,
+					 line->p2.x - line->p1.x,
+					 dy);
+    }
+
+    return x;
+}
+
+static inline int
+_cairo_bo_point32_compare (cairo_bo_intersect_point_t const *a,
+			   cairo_bo_intersect_point_t const *b)
+{
+    int cmp;
+
+    cmp = a->y.ordinate - b->y.ordinate;
+    if (cmp)
+	return cmp;
+
+    cmp = a->y.approx - b->y.approx;
+    if (cmp)
+	return cmp;
+
+    return a->x.ordinate - b->x.ordinate;
+}
+
+/* Compare the slope of a to the slope of b, returning 1, 0, -1 if the
+ * slope a is respectively greater than, equal to, or less than the
+ * slope of b.
+ *
+ * For each edge, consider the direction vector formed from:
+ *
+ *	top -> bottom
+ *
+ * which is:
+ *
+ *	(dx, dy) = (line.p2.x - line.p1.x, line.p2.y - line.p1.y)
+ *
+ * We then define the slope of each edge as dx/dy, (which is the
+ * inverse of the slope typically used in math instruction). We never
+ * compute a slope directly as the value approaches infinity, but we
+ * can derive a slope comparison without division as follows, (where
+ * the ? represents our compare operator).
+ *
+ * 1.	   slope(a) ? slope(b)
+ * 2.	    adx/ady ? bdx/bdy
+ * 3.	(adx * bdy) ? (bdx * ady)
+ *
+ * Note that from step 2 to step 3 there is no change needed in the
+ * sign of the result since both ady and bdy are guaranteed to be
+ * greater than or equal to 0.
+ *
+ * When using this slope comparison to sort edges, some care is needed
+ * when interpreting the results. Since the slope compare operates on
+ * distance vectors from top to bottom it gives a correct left to
+ * right sort for edges that have a common top point, (such as two
+ * edges with start events at the same location). On the other hand,
+ * the sense of the result will be exactly reversed for two edges that
+ * have a common stop point.
+ */
+static inline int
+_slope_compare (const cairo_bo_edge_t *a,
+		const cairo_bo_edge_t *b)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    int32_t bdx = b->edge.line.p2.x - b->edge.line.p1.x;
+
+    /* Since the dy's are all positive by construction we can fast
+     * path several common cases.
+     */
+
+    /* First check for vertical lines. */
+    if (adx == 0)
+	return -bdx;
+    if (bdx == 0)
+	return adx;
+
+    /* Then where the two edges point in different directions wrt x. */
+    if ((adx ^ bdx) < 0)
+	return adx;
+
+    /* Finally we actually need to do the general comparison. */
+    {
+	int32_t ady = a->edge.line.p2.y - a->edge.line.p1.y;
+	int32_t bdy = b->edge.line.p2.y - b->edge.line.p1.y;
+	cairo_int64_t adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	cairo_int64_t bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	return _cairo_int64_cmp (adx_bdy, bdx_ady);
+    }
+}
+
+/*
+ * We need to compare the x-coordinates of a pair of lines for a particular y,
+ * without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ B_x + (Y - B_y) * B_dx / B_dy,
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy and B_dy (and (Y - A_y), (Y - B_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   A_dy * B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx * A_dy
+ *                                 - (Y - A_y) * A_dx * B_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 128 bit arithmetic. For certain, but common,
+ * input we can reduce this down to a single 32 bit compare by inspecting the
+ * deltas.
+ *
+ * (And put the burden of the work on developing fast 128 bit ops, which are
+ * required throughout the tessellator.)
+ *
+ * See the similar discussion for _slope_compare().
+ */
+static int
+edges_compare_x_for_y_general (const cairo_bo_edge_t *a,
+			       const cairo_bo_edge_t *b,
+			       int32_t y)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t dx;
+    int32_t adx, ady;
+    int32_t bdx, bdy;
+    enum {
+       HAVE_NONE    = 0x0,
+       HAVE_DX      = 0x1,
+       HAVE_ADX     = 0x2,
+       HAVE_DX_ADX  = HAVE_DX | HAVE_ADX,
+       HAVE_BDX     = 0x4,
+       HAVE_DX_BDX  = HAVE_DX | HAVE_BDX,
+       HAVE_ADX_BDX = HAVE_ADX | HAVE_BDX,
+       HAVE_ALL     = HAVE_DX | HAVE_ADX | HAVE_BDX
+    } have_dx_adx_bdx = HAVE_ALL;
+
+    /* don't bother solving for abscissa if the edges' bounding boxes
+     * can be used to order them. */
+    {
+           int32_t amin, amax;
+           int32_t bmin, bmax;
+           if (a->edge.line.p1.x < a->edge.line.p2.x) {
+                   amin = a->edge.line.p1.x;
+                   amax = a->edge.line.p2.x;
+           } else {
+                   amin = a->edge.line.p2.x;
+                   amax = a->edge.line.p1.x;
+           }
+           if (b->edge.line.p1.x < b->edge.line.p2.x) {
+                   bmin = b->edge.line.p1.x;
+                   bmax = b->edge.line.p2.x;
+           } else {
+                   bmin = b->edge.line.p2.x;
+                   bmax = b->edge.line.p1.x;
+           }
+           if (amax < bmin) return -1;
+           if (amin > bmax) return +1;
+    }
+
+    ady = a->edge.line.p2.y - a->edge.line.p1.y;
+    adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    if (adx == 0)
+	have_dx_adx_bdx &= ~HAVE_ADX;
+
+    bdy = b->edge.line.p2.y - b->edge.line.p1.y;
+    bdx = b->edge.line.p2.x - b->edge.line.p1.x;
+    if (bdx == 0)
+	have_dx_adx_bdx &= ~HAVE_BDX;
+
+    dx = a->edge.line.p1.x - b->edge.line.p1.x;
+    if (dx == 0)
+	have_dx_adx_bdx &= ~HAVE_DX;
+
+#define L _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (ady, bdy), dx)
+#define A _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (adx, bdy), y - a->edge.line.p1.y)
+#define B _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (bdx, ady), y - b->edge.line.p1.y)
+    switch (have_dx_adx_bdx) {
+    default:
+    case HAVE_NONE:
+	return 0;
+    case HAVE_DX:
+	/* A_dy * B_dy * (A_x - B_x) ∘ 0 */
+	return dx; /* ady * bdy is positive definite */
+    case HAVE_ADX:
+	/* 0 ∘  - (Y - A_y) * A_dx * B_dy */
+	return adx; /* bdy * (y - a->top.y) is positive definite */
+    case HAVE_BDX:
+	/* 0 ∘ (Y - B_y) * B_dx * A_dy */
+	return -bdx; /* ady * (y - b->top.y) is positive definite */
+    case HAVE_ADX_BDX:
+	/*  0 ∘ (Y - B_y) * B_dx * A_dy - (Y - A_y) * A_dx * B_dy */
+	if ((adx ^ bdx) < 0) {
+	    return adx;
+	} else if (a->edge.line.p1.y == b->edge.line.p1.y) { /* common origin */
+	    cairo_int64_t adx_bdy, bdx_ady;
+
+	    /* ∴ A_dx * B_dy ∘ B_dx * A_dy */
+
+	    adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	    bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	    return _cairo_int64_cmp (adx_bdy, bdx_ady);
+	} else
+	    return _cairo_int128_cmp (A, B);
+    case HAVE_DX_ADX:
+	/* A_dy * (A_x - B_x) ∘ - (Y - A_y) * A_dx */
+	if ((-adx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t ady_dx, dy_adx;
+
+	    ady_dx = _cairo_int32x32_64_mul (ady, dx);
+	    dy_adx = _cairo_int32x32_64_mul (a->edge.line.p1.y - y, adx);
+
+	    return _cairo_int64_cmp (ady_dx, dy_adx);
+	}
+    case HAVE_DX_BDX:
+	/* B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx */
+	if ((bdx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t bdy_dx, dy_bdx;
+
+	    bdy_dx = _cairo_int32x32_64_mul (bdy, dx);
+	    dy_bdx = _cairo_int32x32_64_mul (y - b->edge.line.p1.y, bdx);
+
+	    return _cairo_int64_cmp (bdy_dx, dy_bdx);
+	}
+    case HAVE_ALL:
+	/* XXX try comparing (a->edge.line.p2.x - b->edge.line.p2.x) et al */
+	return _cairo_int128_cmp (L, _cairo_int128_sub (B, A));
+    }
+#undef B
+#undef A
+#undef L
+}
+
+/*
+ * We need to compare the x-coordinate of a line for a particular y wrt to a
+ * given x, without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ X
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy (and (Y - A_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   (Y - A_y) * A_dx ∘ (X - A_x) * A_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 64 bit arithmetic.
+ *
+ * See the similar discussion for _slope_compare() and
+ * edges_compare_x_for_y_general().
+ */
+static int
+edge_compare_for_y_against_x (const cairo_bo_edge_t *a,
+			      int32_t y,
+			      int32_t x)
+{
+    int32_t adx, ady;
+    int32_t dx, dy;
+    cairo_int64_t L, R;
+
+    if (x < a->edge.line.p1.x && x < a->edge.line.p2.x)
+	return 1;
+    if (x > a->edge.line.p1.x && x > a->edge.line.p2.x)
+	return -1;
+
+    adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    dx = x - a->edge.line.p1.x;
+
+    if (adx == 0)
+	return -dx;
+    if (dx == 0 || (adx ^ dx) < 0)
+	return adx;
+
+    dy = y - a->edge.line.p1.y;
+    ady = a->edge.line.p2.y - a->edge.line.p1.y;
+
+    L = _cairo_int32x32_64_mul (dy, adx);
+    R = _cairo_int32x32_64_mul (dx, ady);
+
+    return _cairo_int64_cmp (L, R);
+}
+
+static int
+edges_compare_x_for_y (const cairo_bo_edge_t *a,
+		       const cairo_bo_edge_t *b,
+		       int32_t y)
+{
+    /* If the sweep-line is currently on an end-point of a line,
+     * then we know its precise x value (and considering that we often need to
+     * compare events at end-points, this happens frequently enough to warrant
+     * special casing).
+     */
+    enum {
+       HAVE_NEITHER = 0x0,
+       HAVE_AX      = 0x1,
+       HAVE_BX      = 0x2,
+       HAVE_BOTH    = HAVE_AX | HAVE_BX
+    } have_ax_bx = HAVE_BOTH;
+    int32_t ax = 0, bx = 0;
+
+    if (y == a->edge.line.p1.y)
+	ax = a->edge.line.p1.x;
+    else if (y == a->edge.line.p2.y)
+	ax = a->edge.line.p2.x;
+    else
+	have_ax_bx &= ~HAVE_AX;
+
+    if (y == b->edge.line.p1.y)
+	bx = b->edge.line.p1.x;
+    else if (y == b->edge.line.p2.y)
+	bx = b->edge.line.p2.x;
+    else
+	have_ax_bx &= ~HAVE_BX;
+
+    switch (have_ax_bx) {
+    default:
+    case HAVE_NEITHER:
+	return edges_compare_x_for_y_general (a, b, y);
+    case HAVE_AX:
+	return -edge_compare_for_y_against_x (b, y, ax);
+    case HAVE_BX:
+	return edge_compare_for_y_against_x (a, y, bx);
+    case HAVE_BOTH:
+	return ax - bx;
+    }
+}
+
+static inline int
+_line_equal (const cairo_line_t *a, const cairo_line_t *b)
+{
+    return a->p1.x == b->p1.x && a->p1.y == b->p1.y &&
+           a->p2.x == b->p2.x && a->p2.y == b->p2.y;
+}
+
+static int
+_cairo_bo_sweep_line_compare_edges (cairo_bo_sweep_line_t	*sweep_line,
+				    const cairo_bo_edge_t	*a,
+				    const cairo_bo_edge_t	*b)
+{
+    int cmp;
+
+    /* compare the edges if not identical */
+    if (! _line_equal (&a->edge.line, &b->edge.line)) {
+	cmp = edges_compare_x_for_y (a, b, sweep_line->current_y);
+	if (cmp)
+	    return cmp;
+
+	/* The two edges intersect exactly at y, so fall back on slope
+	 * comparison. We know that this compare_edges function will be
+	 * called only when starting a new edge, (not when stopping an
+	 * edge), so we don't have to worry about conditionally inverting
+	 * the sense of _slope_compare. */
+	cmp = _slope_compare (a, b);
+	if (cmp)
+	    return cmp;
+    }
+
+    /* We've got two collinear edges now. */
+    return b->edge.bottom - a->edge.bottom;
+}
+
+static inline cairo_int64_t
+det32_64 (int32_t a, int32_t b,
+	  int32_t c, int32_t d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int64_sub (_cairo_int32x32_64_mul (a, d),
+			     _cairo_int32x32_64_mul (b, c));
+}
+
+static inline cairo_int128_t
+det64x32_128 (cairo_int64_t a, int32_t       b,
+	      cairo_int64_t c, int32_t       d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int128_sub (_cairo_int64x32_128_mul (a, d),
+			      _cairo_int64x32_128_mul (c, b));
+}
+
+static inline cairo_bo_intersect_ordinate_t
+round_to_nearest (cairo_quorem64_t d,
+		  cairo_int64_t    den)
+{
+    cairo_bo_intersect_ordinate_t ordinate;
+    int32_t quo = d.quo;
+    cairo_int64_t drem_2 = _cairo_int64_mul (d.rem, _cairo_int32_to_int64 (2));
+
+    /* assert (! _cairo_int64_negative (den));*/
+
+    if (_cairo_int64_lt (drem_2, _cairo_int64_negate (den))) {
+	quo -= 1;
+	drem_2 = _cairo_int64_negate (drem_2);
+    } else if (_cairo_int64_le (den, drem_2)) {
+	quo += 1;
+	drem_2 = _cairo_int64_negate (drem_2);
+    }
+
+    ordinate.ordinate = quo;
+    ordinate.approx = _cairo_int64_is_zero (drem_2) ? EXACT : _cairo_int64_negative (drem_2) ? EXCESS : DEFAULT;
+
+    return ordinate;
+}
+
+/* Compute the intersection of two lines as defined by two edges. The
+ * result is provided as a coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection or
+ * %CAIRO_BO_STATUS_PARALLEL if the two lines are exactly parallel.
+ */
+static cairo_bool_t
+intersect_lines (cairo_bo_edge_t		*a,
+		 cairo_bo_edge_t		*b,
+		 cairo_bo_intersect_point_t	*intersection)
+{
+    cairo_int64_t a_det, b_det;
+
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm begins.
+     * What we're doing to mitigate this is to perform clamping in
+     * cairo_bo_tessellate_polygon().
+     */
+    int32_t dx1 = a->edge.line.p1.x - a->edge.line.p2.x;
+    int32_t dy1 = a->edge.line.p1.y - a->edge.line.p2.y;
+
+    int32_t dx2 = b->edge.line.p1.x - b->edge.line.p2.x;
+    int32_t dy2 = b->edge.line.p1.y - b->edge.line.p2.y;
+
+    cairo_int64_t den_det;
+    cairo_int64_t R;
+    cairo_quorem64_t qr;
+
+    den_det = det32_64 (dx1, dy1, dx2, dy2);
+
+     /* Q: Can we determine that the lines do not intersect (within range)
+      * much more cheaply than computing the intersection point i.e. by
+      * avoiding the division?
+      *
+      *   X = ax + t * adx = bx + s * bdx;
+      *   Y = ay + t * ady = by + s * bdy;
+      *   ∴ t * (ady*bdx - bdy*adx) = bdx * (by - ay) + bdy * (ax - bx)
+      *   => t * L = R
+      *
+      * Therefore we can reject any intersection (under the criteria for
+      * valid intersection events) if:
+      *   L^R < 0 => t < 0, or
+      *   L<R => t > 1
+      *
+      * (where top/bottom must at least extend to the line endpoints).
+      *
+      * A similar substitution can be performed for s, yielding:
+      *   s * (ady*bdx - bdy*adx) = ady * (ax - bx) - adx * (ay - by)
+      */
+    R = det32_64 (dx2, dy2,
+		  b->edge.line.p1.x - a->edge.line.p1.x,
+		  b->edge.line.p1.y - a->edge.line.p1.y);
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+
+    R = det32_64 (dy1, dx1,
+		  a->edge.line.p1.y - b->edge.line.p1.y,
+		  a->edge.line.p1.x - b->edge.line.p1.x);
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+
+    /* We now know that the two lines should intersect within range. */
+
+    a_det = det32_64 (a->edge.line.p1.x, a->edge.line.p1.y,
+		      a->edge.line.p2.x, a->edge.line.p2.y);
+    b_det = det32_64 (b->edge.line.p1.x, b->edge.line.p1.y,
+		      b->edge.line.p2.x, b->edge.line.p2.y);
+
+    /* x = det (a_det, dx1, b_det, dx2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dx1,
+						       b_det, dx2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+
+    intersection->x = round_to_nearest (qr, den_det);
+
+    /* y = det (a_det, dy1, b_det, dy2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dy1,
+						       b_det, dy2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+
+    intersection->y = round_to_nearest (qr, den_det);
+
+    return TRUE;
+}
+
+static int
+_cairo_bo_intersect_ordinate_32_compare (cairo_bo_intersect_ordinate_t	a,
+					 int32_t			b)
+{
+    /* First compare the quotient */
+    if (a.ordinate > b)
+	return +1;
+    if (a.ordinate < b)
+	return -1;
+
+    return a.approx; /* == EXCESS ? -1 : a.approx == EXACT ? 0 : 1;*/
+}
+
+/* Does the given edge contain the given point. The point must already
+ * be known to be contained within the line determined by the edge,
+ * (most likely the point results from an intersection of this edge
+ * with another).
+ *
+ * If we had exact arithmetic, then this function would simply be a
+ * matter of examining whether the y value of the point lies within
+ * the range of y values of the edge. But since intersection points
+ * are not exact due to being rounded to the nearest integer within
+ * the available precision, we must also examine the x value of the
+ * point.
+ *
+ * The definition of "contains" here is that the given intersection
+ * point will be seen by the sweep line after the start event for the
+ * given edge and before the stop event for the edge. See the comments
+ * in the implementation for more details.
+ */
+static cairo_bool_t
+_cairo_bo_edge_contains_intersect_point (cairo_bo_edge_t		*edge,
+					 cairo_bo_intersect_point_t	*point)
+{
+    return _cairo_bo_intersect_ordinate_32_compare (point->y,
+						    edge->edge.bottom) < 0;
+}
+
+/* Compute the intersection of two edges. The result is provided as a
+ * coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection
+ * that is within both edges, %CAIRO_BO_STATUS_NO_INTERSECTION if the
+ * intersection of the lines defined by the edges occurs outside of
+ * one or both edges, and %CAIRO_BO_STATUS_PARALLEL if the two edges
+ * are exactly parallel.
+ *
+ * Note that when determining if a candidate intersection is "inside"
+ * an edge, we consider both the infinitesimal shortening and the
+ * infinitesimal tilt rules described by John Hobby. Specifically, if
+ * the intersection is exactly the same as an edge point, it is
+ * effectively outside (no intersection is returned). Also, if the
+ * intersection point has the same
+ */
+static cairo_bool_t
+_cairo_bo_edge_intersect (cairo_bo_edge_t	*a,
+			  cairo_bo_edge_t	*b,
+			  cairo_bo_intersect_point_t *intersection)
+{
+    if (! intersect_lines (a, b, intersection))
+	return FALSE;
+
+    if (! _cairo_bo_edge_contains_intersect_point (a, intersection))
+	return FALSE;
+
+    if (! _cairo_bo_edge_contains_intersect_point (b, intersection))
+	return FALSE;
+
+    return TRUE;
+}
+
+static inline int
+cairo_bo_event_compare (const cairo_bo_event_t *a,
+			const cairo_bo_event_t *b)
+{
+    int cmp;
+
+    cmp = _cairo_bo_point32_compare (&a->point, &b->point);
+    if (cmp)
+	return cmp;
+
+    cmp = a->type - b->type;
+    if (cmp)
+	return cmp;
+
+    return a < b ? -1 : a == b ? 0 : 1;
+}
+
+static inline void
+_pqueue_init (pqueue_t *pq)
+{
+    pq->max_size = ARRAY_LENGTH (pq->elements_embedded);
+    pq->size = 0;
+
+    pq->elements = pq->elements_embedded;
+}
+
+static inline void
+_pqueue_fini (pqueue_t *pq)
+{
+    if (pq->elements != pq->elements_embedded)
+	free (pq->elements);
+}
+
+static cairo_status_t
+_pqueue_grow (pqueue_t *pq)
+{
+    cairo_bo_event_t **new_elements;
+    pq->max_size *= 2;
+
+    if (pq->elements == pq->elements_embedded) {
+	new_elements = _cairo_malloc_ab (pq->max_size,
+					 sizeof (cairo_bo_event_t *));
+	if (unlikely (new_elements == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	memcpy (new_elements, pq->elements_embedded,
+		sizeof (pq->elements_embedded));
+    } else {
+	new_elements = _cairo_realloc_ab (pq->elements,
+					  pq->max_size,
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (new_elements == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pq->elements = new_elements;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline cairo_status_t
+_pqueue_push (pqueue_t *pq, cairo_bo_event_t *event)
+{
+    cairo_bo_event_t **elements;
+    int i, parent;
+
+    if (unlikely (pq->size + 1 == pq->max_size)) {
+	cairo_status_t status;
+
+	status = _pqueue_grow (pq);
+	if (unlikely (status))
+	    return status;
+    }
+
+    elements = pq->elements;
+
+    for (i = ++pq->size;
+	 i != PQ_FIRST_ENTRY &&
+	 cairo_bo_event_compare (event,
+				 elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = event;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline void
+_pqueue_pop (pqueue_t *pq)
+{
+    cairo_bo_event_t **elements = pq->elements;
+    cairo_bo_event_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    cairo_bo_event_compare (elements[child+1],
+				    elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (cairo_bo_event_compare (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline cairo_status_t
+_cairo_bo_event_queue_insert (cairo_bo_event_queue_t	*queue,
+			      cairo_bo_event_type_t	 type,
+			      cairo_bo_edge_t		*e1,
+			      cairo_bo_edge_t		*e2,
+			      const cairo_bo_intersect_point_t  *point)
+{
+    cairo_bo_queue_event_t *event;
+
+    event = _cairo_freepool_alloc (&queue->pool);
+    if (unlikely (event == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    event->type = type;
+    event->e1 = e1;
+    event->e2 = e2;
+    event->point = *point;
+
+    return _pqueue_push (&queue->pqueue, (cairo_bo_event_t *) event);
+}
+
+static void
+_cairo_bo_event_queue_delete (cairo_bo_event_queue_t *queue,
+			      cairo_bo_event_t	     *event)
+{
+    _cairo_freepool_free (&queue->pool, event);
+}
+
+static cairo_bo_event_t *
+_cairo_bo_event_dequeue (cairo_bo_event_queue_t *event_queue)
+{
+    cairo_bo_event_t *event, *cmp;
+
+    event = event_queue->pqueue.elements[PQ_FIRST_ENTRY];
+    cmp = *event_queue->start_events;
+    if (event == NULL ||
+	(cmp != NULL && cairo_bo_event_compare (cmp, event) < 0))
+    {
+	event = cmp;
+	event_queue->start_events++;
+    }
+    else
+    {
+	_pqueue_pop (&event_queue->pqueue);
+    }
+
+    return event;
+}
+
+CAIRO_COMBSORT_DECLARE (_cairo_bo_event_queue_sort,
+			cairo_bo_event_t *,
+			cairo_bo_event_compare)
+
+static void
+_cairo_bo_event_queue_init (cairo_bo_event_queue_t	 *event_queue,
+			    cairo_bo_event_t		**start_events,
+			    int				  num_events)
+{
+    _cairo_bo_event_queue_sort (start_events, num_events);
+    start_events[num_events] = NULL;
+
+    event_queue->start_events = start_events;
+
+    _cairo_freepool_init (&event_queue->pool,
+			  sizeof (cairo_bo_queue_event_t));
+    _pqueue_init (&event_queue->pqueue);
+    event_queue->pqueue.elements[PQ_FIRST_ENTRY] = NULL;
+}
+
+static cairo_status_t
+event_queue_insert_stop (cairo_bo_event_queue_t	*event_queue,
+			 cairo_bo_edge_t		*edge)
+{
+    cairo_bo_intersect_point_t point;
+
+    point.y.ordinate = edge->edge.bottom;
+    point.y.approx   = EXACT;
+    point.x.ordinate = _line_compute_intersection_x_for_y (&edge->edge.line,
+							   point.y.ordinate);
+    point.x.approx   = EXACT;
+
+    return _cairo_bo_event_queue_insert (event_queue,
+					 CAIRO_BO_EVENT_TYPE_STOP,
+					 edge, NULL,
+					 &point);
+}
+
+static void
+_cairo_bo_event_queue_fini (cairo_bo_event_queue_t *event_queue)
+{
+    _pqueue_fini (&event_queue->pqueue);
+    _cairo_freepool_fini (&event_queue->pool);
+}
+
+static inline cairo_status_t
+event_queue_insert_if_intersect_below_current_y (cairo_bo_event_queue_t	*event_queue,
+						 cairo_bo_edge_t	*left,
+						 cairo_bo_edge_t *right)
+{
+    cairo_bo_intersect_point_t intersection;
+
+    if (_line_equal (&left->edge.line, &right->edge.line))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* The names "left" and "right" here are correct descriptions of
+     * the order of the two edges within the active edge list. So if a
+     * slope comparison also puts left less than right, then we know
+     * that the intersection of these two segments has already
+     * occurred before the current sweep line position. */
+    if (_slope_compare (left, right) <= 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! _cairo_bo_edge_intersect (left, right, &intersection))
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_bo_event_queue_insert (event_queue,
+					 CAIRO_BO_EVENT_TYPE_INTERSECTION,
+					 left, right,
+					 &intersection);
+}
+
+static void
+_cairo_bo_sweep_line_init (cairo_bo_sweep_line_t *sweep_line)
+{
+    sweep_line->head = NULL;
+    sweep_line->current_y = INT32_MIN;
+    sweep_line->current_edge = NULL;
+}
+
+static cairo_status_t
+sweep_line_insert (cairo_bo_sweep_line_t	*sweep_line,
+		   cairo_bo_edge_t		*edge)
+{
+    if (sweep_line->current_edge != NULL) {
+	cairo_bo_edge_t *prev, *next;
+	int cmp;
+
+	cmp = _cairo_bo_sweep_line_compare_edges (sweep_line,
+						  sweep_line->current_edge,
+						  edge);
+	if (cmp < 0) {
+	    prev = sweep_line->current_edge;
+	    next = prev->next;
+	    while (next != NULL &&
+		   _cairo_bo_sweep_line_compare_edges (sweep_line,
+						       next, edge) < 0)
+	    {
+		prev = next, next = prev->next;
+	    }
+
+	    prev->next = edge;
+	    edge->prev = prev;
+	    edge->next = next;
+	    if (next != NULL)
+		next->prev = edge;
+	} else if (cmp > 0) {
+	    next = sweep_line->current_edge;
+	    prev = next->prev;
+	    while (prev != NULL &&
+		   _cairo_bo_sweep_line_compare_edges (sweep_line,
+						       prev, edge) > 0)
+	    {
+		next = prev, prev = next->prev;
+	    }
+
+	    next->prev = edge;
+	    edge->next = next;
+	    edge->prev = prev;
+	    if (prev != NULL)
+		prev->next = edge;
+	    else
+		sweep_line->head = edge;
+	} else {
+	    prev = sweep_line->current_edge;
+	    edge->prev = prev;
+	    edge->next = prev->next;
+	    if (prev->next != NULL)
+		prev->next->prev = edge;
+	    prev->next = edge;
+	}
+    } else {
+	sweep_line->head = edge;
+    }
+
+    sweep_line->current_edge = edge;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_bo_sweep_line_delete (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t	*edge)
+{
+    if (edge->prev != NULL)
+	edge->prev->next = edge->next;
+    else
+	sweep_line->head = edge->next;
+
+    if (edge->next != NULL)
+	edge->next->prev = edge->prev;
+
+    if (sweep_line->current_edge == edge)
+	sweep_line->current_edge = edge->prev ? edge->prev : edge->next;
+}
+
+static void
+_cairo_bo_sweep_line_swap (cairo_bo_sweep_line_t	*sweep_line,
+			   cairo_bo_edge_t		*left,
+			   cairo_bo_edge_t		*right)
+{
+    if (left->prev != NULL)
+	left->prev->next = right;
+    else
+	sweep_line->head = right;
+
+    if (right->next != NULL)
+	right->next->prev = left;
+
+    left->next = right->next;
+    right->next = left;
+
+    right->prev = left->prev;
+    left->prev = right;
+}
+
+static inline cairo_bool_t
+edges_colinear (const cairo_bo_edge_t *a, const cairo_bo_edge_t *b)
+{
+    if (_line_equal (&a->edge.line, &b->edge.line))
+	return TRUE;
+
+    if (_slope_compare (a, b))
+	return FALSE;
+
+    /* The choice of y is not truly arbitrary since we must guarantee that it
+     * is greater than the start of either line.
+     */
+    if (a->edge.line.p1.y == b->edge.line.p1.y) {
+	return a->edge.line.p1.x == b->edge.line.p1.x;
+    } else if (a->edge.line.p1.y < b->edge.line.p1.y) {
+	return edge_compare_for_y_against_x (b,
+					     a->edge.line.p1.y,
+					     a->edge.line.p1.x) == 0;
+    } else {
+	return edge_compare_for_y_against_x (a,
+					     b->edge.line.p1.y,
+					     b->edge.line.p1.x) == 0;
+    }
+}
+
+static void
+edges_end (cairo_bo_edge_t	*left,
+	   int32_t		 bot,
+	   cairo_polygon_t	*polygon)
+{
+    cairo_bo_deferred_t *l = &left->deferred;
+    cairo_bo_edge_t *right = l->other;
+
+    assert(right->deferred.other == NULL);
+    if (likely (l->top < bot)) {
+	_cairo_polygon_add_line (polygon, &left->edge.line, l->top, bot, 1);
+	_cairo_polygon_add_line (polygon, &right->edge.line, l->top, bot, -1);
+    }
+
+    l->other = NULL;
+}
+
+static inline void
+edges_start_or_continue (cairo_bo_edge_t	*left,
+			 cairo_bo_edge_t	*right,
+			 int			 top,
+			 cairo_polygon_t	*polygon)
+{
+    assert (right != NULL);
+    assert (right->deferred.other == NULL);
+
+    if (left->deferred.other == right)
+	return;
+
+    if (left->deferred.other != NULL) {
+	if (edges_colinear (left->deferred.other, right)) {
+	    cairo_bo_edge_t *old = left->deferred.other;
+
+	    /* continuation on right, extend right to cover both */
+	    assert (old->deferred.other == NULL);
+	    assert (old->edge.line.p2.y > old->edge.line.p1.y);
+
+	    if (old->edge.line.p1.y < right->edge.line.p1.y)
+		right->edge.line.p1 = old->edge.line.p1;
+	    if (old->edge.line.p2.y > right->edge.line.p2.y)
+		right->edge.line.p2 = old->edge.line.p2;
+	    left->deferred.other = right;
+	    return;
+	}
+
+	edges_end (left, top, polygon);
+    }
+
+    if (! edges_colinear (left, right)) {
+	left->deferred.top = top;
+	left->deferred.other = right;
+    }
+}
+
+#define is_zero(w) ((w)[0] == 0 || (w)[1] == 0)
+
+static inline void
+active_edges (cairo_bo_edge_t		*left,
+	      int32_t			 top,
+	      cairo_polygon_t	        *polygon)
+{
+	cairo_bo_edge_t *right;
+	int winding[2] = {0, 0};
+
+	/* Yes, this is naive. Consider this a placeholder. */
+
+	while (left != NULL) {
+	    assert (is_zero (winding));
+
+	    do {
+		winding[left->a_or_b] += left->edge.dir;
+		if (! is_zero (winding))
+		    break;
+
+		if unlikely ((left->deferred.other))
+		    edges_end (left, top, polygon);
+
+		left = left->next;
+		if (! left)
+		    return;
+	    } while (1);
+
+	    right = left->next;
+	    do {
+		if unlikely ((right->deferred.other))
+		    edges_end (right, top, polygon);
+
+		winding[right->a_or_b] += right->edge.dir;
+		if (is_zero (winding)) {
+		    if (right->next == NULL ||
+			! edges_colinear (right, right->next))
+			break;
+		}
+
+		right = right->next;
+	    } while (1);
+
+	    edges_start_or_continue (left, right, top, polygon);
+
+	    left = right->next;
+	}
+}
+
+static cairo_status_t
+intersection_sweep (cairo_bo_event_t   **start_events,
+		    int			 num_events,
+		    cairo_polygon_t	*polygon)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS; /* silence compiler */
+    cairo_bo_event_queue_t event_queue;
+    cairo_bo_sweep_line_t sweep_line;
+    cairo_bo_event_t *event;
+    cairo_bo_edge_t *left, *right;
+    cairo_bo_edge_t *e1, *e2;
+
+    _cairo_bo_event_queue_init (&event_queue, start_events, num_events);
+    _cairo_bo_sweep_line_init (&sweep_line);
+
+    while ((event = _cairo_bo_event_dequeue (&event_queue))) {
+	if (event->point.y.ordinate != sweep_line.current_y) {
+	    active_edges (sweep_line.head,
+			  sweep_line.current_y,
+			  polygon);
+	    sweep_line.current_y = event->point.y.ordinate;
+	}
+
+	switch (event->type) {
+	case CAIRO_BO_EVENT_TYPE_START:
+	    e1 = &((cairo_bo_start_event_t *) event)->edge;
+
+	    status = sweep_line_insert (&sweep_line, e1);
+	    if (unlikely (status))
+		goto unwind;
+
+	    status = event_queue_insert_stop (&event_queue, e1);
+	    if (unlikely (status))
+		goto unwind;
+
+	    left = e1->prev;
+	    right = e1->next;
+
+	    if (left != NULL) {
+		status = event_queue_insert_if_intersect_below_current_y (&event_queue, left, e1);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    if (right != NULL) {
+		status = event_queue_insert_if_intersect_below_current_y (&event_queue, e1, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_STOP:
+	    e1 = ((cairo_bo_queue_event_t *) event)->e1;
+	    _cairo_bo_event_queue_delete (&event_queue, event);
+
+	    if (e1->deferred.other)
+		edges_end (e1, sweep_line.current_y, polygon);
+
+	    left = e1->prev;
+	    right = e1->next;
+
+	    _cairo_bo_sweep_line_delete (&sweep_line, e1);
+
+	    if (left != NULL && right != NULL) {
+		status = event_queue_insert_if_intersect_below_current_y (&event_queue, left, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_INTERSECTION:
+	    e1 = ((cairo_bo_queue_event_t *) event)->e1;
+	    e2 = ((cairo_bo_queue_event_t *) event)->e2;
+	    _cairo_bo_event_queue_delete (&event_queue, event);
+
+	    /* skip this intersection if its edges are not adjacent */
+	    if (e2 != e1->next)
+		break;
+
+	    if (e1->deferred.other)
+		edges_end (e1, sweep_line.current_y, polygon);
+	    if (e2->deferred.other)
+		edges_end (e2, sweep_line.current_y, polygon);
+
+	    left = e1->prev;
+	    right = e2->next;
+
+	    _cairo_bo_sweep_line_swap (&sweep_line, e1, e2);
+
+	    /* after the swap e2 is left of e1 */
+
+	    if (left != NULL) {
+		status = event_queue_insert_if_intersect_below_current_y (&event_queue, left, e2);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    if (right != NULL) {
+		status = event_queue_insert_if_intersect_below_current_y (&event_queue, e1, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+	}
+    }
+
+ unwind:
+    _cairo_bo_event_queue_fini (&event_queue);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_polygon_intersect (cairo_polygon_t *a, int winding_a,
+			  cairo_polygon_t *b, int winding_b)
+{
+    cairo_status_t status;
+    cairo_bo_start_event_t stack_events[CAIRO_STACK_ARRAY_LENGTH (cairo_bo_start_event_t)];
+    cairo_bo_start_event_t *events;
+    cairo_bo_event_t *stack_event_ptrs[ARRAY_LENGTH (stack_events) + 1];
+    cairo_bo_event_t **event_ptrs;
+    int num_events;
+    int i, j;
+
+    /* XXX lazy */
+    if (winding_a != CAIRO_FILL_RULE_WINDING) {
+	status = _cairo_polygon_reduce (a, winding_a);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (winding_b != CAIRO_FILL_RULE_WINDING) {
+	status = _cairo_polygon_reduce (b, winding_b);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (unlikely (0 == a->num_edges))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (unlikely (0 == b->num_edges)) {
+	a->num_edges = 0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    events = stack_events;
+    event_ptrs = stack_event_ptrs;
+    num_events = a->num_edges + b->num_edges;
+    if (num_events > ARRAY_LENGTH (stack_events)) {
+	events = _cairo_malloc_ab_plus_c (num_events,
+					  sizeof (cairo_bo_start_event_t) +
+					  sizeof (cairo_bo_event_t *),
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (events == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	event_ptrs = (cairo_bo_event_t **) (events + num_events);
+    }
+
+    j = 0;
+    for (i = 0; i < a->num_edges; i++) {
+	event_ptrs[j] = (cairo_bo_event_t *) &events[j];
+
+	events[j].type = CAIRO_BO_EVENT_TYPE_START;
+	events[j].point.y.ordinate = a->edges[i].top;
+	events[j].point.y.approx = EXACT;
+	events[j].point.x.ordinate =
+	    _line_compute_intersection_x_for_y (&a->edges[i].line,
+						events[j].point.y.ordinate);
+	events[j].point.x.approx = EXACT;
+
+	events[j].edge.a_or_b = 0;
+	events[j].edge.edge = a->edges[i];
+	events[j].edge.deferred.other = NULL;
+	events[j].edge.prev = NULL;
+	events[j].edge.next = NULL;
+	j++;
+    }
+
+    for (i = 0; i < b->num_edges; i++) {
+	event_ptrs[j] = (cairo_bo_event_t *) &events[j];
+
+	events[j].type = CAIRO_BO_EVENT_TYPE_START;
+	events[j].point.y.ordinate = b->edges[i].top;
+	events[j].point.y.approx = EXACT;
+	events[j].point.x.ordinate =
+	    _line_compute_intersection_x_for_y (&b->edges[i].line,
+						events[j].point.y.ordinate);
+	events[j].point.x.approx = EXACT;
+
+	events[j].edge.a_or_b = 1;
+	events[j].edge.edge = b->edges[i];
+	events[j].edge.deferred.other = NULL;
+	events[j].edge.prev = NULL;
+	events[j].edge.next = NULL;
+	j++;
+    }
+    assert (j == num_events);
+
+#if 0
+    {
+	FILE *file = fopen ("clip_a.txt", "w");
+	_cairo_debug_print_polygon (file, a);
+	fclose (file);
+    }
+    {
+	FILE *file = fopen ("clip_b.txt", "w");
+	_cairo_debug_print_polygon (file, b);
+	fclose (file);
+    }
+#endif
+
+    a->num_edges = 0;
+    status = intersection_sweep (event_ptrs, num_events, a);
+    if (events != stack_events)
+	free (events);
+
+#if 0
+    {
+	FILE *file = fopen ("clip_result.txt", "w");
+	_cairo_debug_print_polygon (file, a);
+	fclose (file);
+    }
+#endif
+
+    return status;
+}
+
+cairo_status_t
+_cairo_polygon_intersect_with_boxes (cairo_polygon_t *polygon,
+				     cairo_fill_rule_t *winding,
+				     cairo_box_t *boxes,
+				     int num_boxes)
+{
+    cairo_polygon_t b;
+    cairo_status_t status;
+    int n;
+
+    if (num_boxes == 0) {
+	polygon->num_edges = 0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    for (n = 0; n < num_boxes; n++) {
+	if (polygon->extents.p1.x >= boxes[n].p1.x &&
+	    polygon->extents.p2.x <= boxes[n].p2.x &&
+	    polygon->extents.p1.y >= boxes[n].p1.y &&
+	    polygon->extents.p2.y <= boxes[n].p2.y)
+	{
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    _cairo_polygon_init (&b, NULL, 0);
+    for (n = 0; n < num_boxes; n++) {
+	if (boxes[n].p2.x > polygon->extents.p1.x &&
+	    boxes[n].p1.x < polygon->extents.p2.x &&
+	    boxes[n].p2.y > polygon->extents.p1.y &&
+	    boxes[n].p1.y < polygon->extents.p2.y)
+	{
+	    cairo_point_t p1, p2;
+
+	    p1.y = boxes[n].p1.y;
+	    p2.y = boxes[n].p2.y;
+
+	    p2.x = p1.x = boxes[n].p1.x;
+	    _cairo_polygon_add_external_edge (&b, &p1, &p2);
+
+	    p2.x = p1.x = boxes[n].p2.x;
+	    _cairo_polygon_add_external_edge (&b, &p2, &p1);
+	}
+    }
+
+    status = _cairo_polygon_intersect (polygon, *winding,
+				       &b, CAIRO_FILL_RULE_WINDING);
+    _cairo_polygon_fini (&b);
+
+    *winding = CAIRO_FILL_RULE_WINDING;
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-polygon-reduce.c b/libs/cairo-1.16.0/src/cairo-polygon-reduce.c
new file mode 100644
index 0000000..da6c9ab
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-polygon-reduce.c
@@ -0,0 +1,1438 @@
+/*
+ * Copyright © 2004 Carl Worth
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Carl Worth
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* Provide definitions for standalone compilation */
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-combsort-inline.h"
+
+#define DEBUG_POLYGON 0
+
+typedef cairo_point_t cairo_bo_point32_t;
+
+typedef struct _cairo_bo_intersect_ordinate {
+    int32_t ordinate;
+    enum { EXACT, INEXACT } exactness;
+} cairo_bo_intersect_ordinate_t;
+
+typedef struct _cairo_bo_intersect_point {
+    cairo_bo_intersect_ordinate_t x;
+    cairo_bo_intersect_ordinate_t y;
+} cairo_bo_intersect_point_t;
+
+typedef struct _cairo_bo_edge cairo_bo_edge_t;
+
+typedef struct _cairo_bo_deferred {
+    cairo_bo_edge_t *right;
+    int32_t top;
+} cairo_bo_deferred_t;
+
+struct _cairo_bo_edge {
+    cairo_edge_t edge;
+    cairo_bo_edge_t *prev;
+    cairo_bo_edge_t *next;
+    cairo_bo_deferred_t deferred;
+};
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef enum {
+    CAIRO_BO_EVENT_TYPE_STOP,
+    CAIRO_BO_EVENT_TYPE_INTERSECTION,
+    CAIRO_BO_EVENT_TYPE_START
+} cairo_bo_event_type_t;
+
+typedef struct _cairo_bo_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+} cairo_bo_event_t;
+
+typedef struct _cairo_bo_start_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+    cairo_bo_edge_t edge;
+} cairo_bo_start_event_t;
+
+typedef struct _cairo_bo_queue_event {
+    cairo_bo_event_type_t type;
+    cairo_point_t point;
+    cairo_bo_edge_t *e1;
+    cairo_bo_edge_t *e2;
+} cairo_bo_queue_event_t;
+
+typedef struct _pqueue {
+    int size, max_size;
+
+    cairo_bo_event_t **elements;
+    cairo_bo_event_t *elements_embedded[1024];
+} pqueue_t;
+
+typedef struct _cairo_bo_event_queue {
+    cairo_freepool_t pool;
+    pqueue_t pqueue;
+    cairo_bo_event_t **start_events;
+} cairo_bo_event_queue_t;
+
+typedef struct _cairo_bo_sweep_line {
+    cairo_bo_edge_t *head;
+    int32_t current_y;
+    cairo_bo_edge_t *current_edge;
+} cairo_bo_sweep_line_t;
+
+static cairo_fixed_t
+_line_compute_intersection_x_for_y (const cairo_line_t *line,
+				    cairo_fixed_t y)
+{
+    cairo_fixed_t x, dy;
+
+    if (y == line->p1.y)
+	return line->p1.x;
+    if (y == line->p2.y)
+	return line->p2.x;
+
+    x = line->p1.x;
+    dy = line->p2.y - line->p1.y;
+    if (dy != 0) {
+	x += _cairo_fixed_mul_div_floor (y - line->p1.y,
+					 line->p2.x - line->p1.x,
+					 dy);
+    }
+
+    return x;
+}
+
+static inline int
+_cairo_bo_point32_compare (cairo_bo_point32_t const *a,
+			   cairo_bo_point32_t const *b)
+{
+    int cmp;
+
+    cmp = a->y - b->y;
+    if (cmp)
+	return cmp;
+
+    return a->x - b->x;
+}
+
+/* Compare the slope of a to the slope of b, returning 1, 0, -1 if the
+ * slope a is respectively greater than, equal to, or less than the
+ * slope of b.
+ *
+ * For each edge, consider the direction vector formed from:
+ *
+ *	top -> bottom
+ *
+ * which is:
+ *
+ *	(dx, dy) = (line.p2.x - line.p1.x, line.p2.y - line.p1.y)
+ *
+ * We then define the slope of each edge as dx/dy, (which is the
+ * inverse of the slope typically used in math instruction). We never
+ * compute a slope directly as the value approaches infinity, but we
+ * can derive a slope comparison without division as follows, (where
+ * the ? represents our compare operator).
+ *
+ * 1.	   slope(a) ? slope(b)
+ * 2.	    adx/ady ? bdx/bdy
+ * 3.	(adx * bdy) ? (bdx * ady)
+ *
+ * Note that from step 2 to step 3 there is no change needed in the
+ * sign of the result since both ady and bdy are guaranteed to be
+ * greater than or equal to 0.
+ *
+ * When using this slope comparison to sort edges, some care is needed
+ * when interpreting the results. Since the slope compare operates on
+ * distance vectors from top to bottom it gives a correct left to
+ * right sort for edges that have a common top point, (such as two
+ * edges with start events at the same location). On the other hand,
+ * the sense of the result will be exactly reversed for two edges that
+ * have a common stop point.
+ */
+static inline int
+_slope_compare (const cairo_bo_edge_t *a,
+		const cairo_bo_edge_t *b)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    int32_t bdx = b->edge.line.p2.x - b->edge.line.p1.x;
+
+    /* Since the dy's are all positive by construction we can fast
+     * path several common cases.
+     */
+
+    /* First check for vertical lines. */
+    if (adx == 0)
+	return -bdx;
+    if (bdx == 0)
+	return adx;
+
+    /* Then where the two edges point in different directions wrt x. */
+    if ((adx ^ bdx) < 0)
+	return adx;
+
+    /* Finally we actually need to do the general comparison. */
+    {
+	int32_t ady = a->edge.line.p2.y - a->edge.line.p1.y;
+	int32_t bdy = b->edge.line.p2.y - b->edge.line.p1.y;
+	cairo_int64_t adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	cairo_int64_t bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	return _cairo_int64_cmp (adx_bdy, bdx_ady);
+    }
+}
+
+/*
+ * We need to compare the x-coordinates of a pair of lines for a particular y,
+ * without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ B_x + (Y - B_y) * B_dx / B_dy,
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy and B_dy (and (Y - A_y), (Y - B_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   A_dy * B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx * A_dy
+ *                                 - (Y - A_y) * A_dx * B_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 128 bit arithmetic. For certain, but common,
+ * input we can reduce this down to a single 32 bit compare by inspecting the
+ * deltas.
+ *
+ * (And put the burden of the work on developing fast 128 bit ops, which are
+ * required throughout the tessellator.)
+ *
+ * See the similar discussion for _slope_compare().
+ */
+static int
+edges_compare_x_for_y_general (const cairo_bo_edge_t *a,
+			       const cairo_bo_edge_t *b,
+			       int32_t y)
+{
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm
+     * begins.
+     */
+    int32_t dx;
+    int32_t adx, ady;
+    int32_t bdx, bdy;
+    enum {
+       HAVE_NONE    = 0x0,
+       HAVE_DX      = 0x1,
+       HAVE_ADX     = 0x2,
+       HAVE_DX_ADX  = HAVE_DX | HAVE_ADX,
+       HAVE_BDX     = 0x4,
+       HAVE_DX_BDX  = HAVE_DX | HAVE_BDX,
+       HAVE_ADX_BDX = HAVE_ADX | HAVE_BDX,
+       HAVE_ALL     = HAVE_DX | HAVE_ADX | HAVE_BDX
+    } have_dx_adx_bdx = HAVE_ALL;
+
+    /* don't bother solving for abscissa if the edges' bounding boxes
+     * can be used to order them. */
+    {
+           int32_t amin, amax;
+           int32_t bmin, bmax;
+           if (a->edge.line.p1.x < a->edge.line.p2.x) {
+                   amin = a->edge.line.p1.x;
+                   amax = a->edge.line.p2.x;
+           } else {
+                   amin = a->edge.line.p2.x;
+                   amax = a->edge.line.p1.x;
+           }
+           if (b->edge.line.p1.x < b->edge.line.p2.x) {
+                   bmin = b->edge.line.p1.x;
+                   bmax = b->edge.line.p2.x;
+           } else {
+                   bmin = b->edge.line.p2.x;
+                   bmax = b->edge.line.p1.x;
+           }
+           if (amax < bmin) return -1;
+           if (amin > bmax) return +1;
+    }
+
+    ady = a->edge.line.p2.y - a->edge.line.p1.y;
+    adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    if (adx == 0)
+	have_dx_adx_bdx &= ~HAVE_ADX;
+
+    bdy = b->edge.line.p2.y - b->edge.line.p1.y;
+    bdx = b->edge.line.p2.x - b->edge.line.p1.x;
+    if (bdx == 0)
+	have_dx_adx_bdx &= ~HAVE_BDX;
+
+    dx = a->edge.line.p1.x - b->edge.line.p1.x;
+    if (dx == 0)
+	have_dx_adx_bdx &= ~HAVE_DX;
+
+#define L _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (ady, bdy), dx)
+#define A _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (adx, bdy), y - a->edge.line.p1.y)
+#define B _cairo_int64x32_128_mul (_cairo_int32x32_64_mul (bdx, ady), y - b->edge.line.p1.y)
+    switch (have_dx_adx_bdx) {
+    default:
+    case HAVE_NONE:
+	return 0;
+    case HAVE_DX:
+	/* A_dy * B_dy * (A_x - B_x) ∘ 0 */
+	return dx; /* ady * bdy is positive definite */
+    case HAVE_ADX:
+	/* 0 ∘  - (Y - A_y) * A_dx * B_dy */
+	return adx; /* bdy * (y - a->top.y) is positive definite */
+    case HAVE_BDX:
+	/* 0 ∘ (Y - B_y) * B_dx * A_dy */
+	return -bdx; /* ady * (y - b->top.y) is positive definite */
+    case HAVE_ADX_BDX:
+	/*  0 ∘ (Y - B_y) * B_dx * A_dy - (Y - A_y) * A_dx * B_dy */
+	if ((adx ^ bdx) < 0) {
+	    return adx;
+	} else if (a->edge.line.p1.y == b->edge.line.p1.y) { /* common origin */
+	    cairo_int64_t adx_bdy, bdx_ady;
+
+	    /* ∴ A_dx * B_dy ∘ B_dx * A_dy */
+
+	    adx_bdy = _cairo_int32x32_64_mul (adx, bdy);
+	    bdx_ady = _cairo_int32x32_64_mul (bdx, ady);
+
+	    return _cairo_int64_cmp (adx_bdy, bdx_ady);
+	} else
+	    return _cairo_int128_cmp (A, B);
+    case HAVE_DX_ADX:
+	/* A_dy * (A_x - B_x) ∘ - (Y - A_y) * A_dx */
+	if ((-adx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t ady_dx, dy_adx;
+
+	    ady_dx = _cairo_int32x32_64_mul (ady, dx);
+	    dy_adx = _cairo_int32x32_64_mul (a->edge.line.p1.y - y, adx);
+
+	    return _cairo_int64_cmp (ady_dx, dy_adx);
+	}
+    case HAVE_DX_BDX:
+	/* B_dy * (A_x - B_x) ∘ (Y - B_y) * B_dx */
+	if ((bdx ^ dx) < 0) {
+	    return dx;
+	} else {
+	    cairo_int64_t bdy_dx, dy_bdx;
+
+	    bdy_dx = _cairo_int32x32_64_mul (bdy, dx);
+	    dy_bdx = _cairo_int32x32_64_mul (y - b->edge.line.p1.y, bdx);
+
+	    return _cairo_int64_cmp (bdy_dx, dy_bdx);
+	}
+    case HAVE_ALL:
+	/* XXX try comparing (a->edge.line.p2.x - b->edge.line.p2.x) et al */
+	return _cairo_int128_cmp (L, _cairo_int128_sub (B, A));
+    }
+#undef B
+#undef A
+#undef L
+}
+
+/*
+ * We need to compare the x-coordinate of a line for a particular y wrt to a
+ * given x, without loss of precision.
+ *
+ * The x-coordinate along an edge for a given y is:
+ *   X = A_x + (Y - A_y) * A_dx / A_dy
+ *
+ * So the inequality we wish to test is:
+ *   A_x + (Y - A_y) * A_dx / A_dy ∘ X
+ * where ∘ is our inequality operator.
+ *
+ * By construction, we know that A_dy (and (Y - A_y)) are
+ * all positive, so we can rearrange it thus without causing a sign change:
+ *   (Y - A_y) * A_dx ∘ (X - A_x) * A_dy
+ *
+ * Given the assumption that all the deltas fit within 32 bits, we can compute
+ * this comparison directly using 64 bit arithmetic.
+ *
+ * See the similar discussion for _slope_compare() and
+ * edges_compare_x_for_y_general().
+ */
+static int
+edge_compare_for_y_against_x (const cairo_bo_edge_t *a,
+			      int32_t y,
+			      int32_t x)
+{
+    int32_t adx, ady;
+    int32_t dx, dy;
+    cairo_int64_t L, R;
+
+    if (x < a->edge.line.p1.x && x < a->edge.line.p2.x)
+	return 1;
+    if (x > a->edge.line.p1.x && x > a->edge.line.p2.x)
+	return -1;
+
+    adx = a->edge.line.p2.x - a->edge.line.p1.x;
+    dx = x - a->edge.line.p1.x;
+
+    if (adx == 0)
+	return -dx;
+    if (dx == 0 || (adx ^ dx) < 0)
+	return adx;
+
+    dy = y - a->edge.line.p1.y;
+    ady = a->edge.line.p2.y - a->edge.line.p1.y;
+
+    L = _cairo_int32x32_64_mul (dy, adx);
+    R = _cairo_int32x32_64_mul (dx, ady);
+
+    return _cairo_int64_cmp (L, R);
+}
+
+static int
+edges_compare_x_for_y (const cairo_bo_edge_t *a,
+		       const cairo_bo_edge_t *b,
+		       int32_t y)
+{
+    /* If the sweep-line is currently on an end-point of a line,
+     * then we know its precise x value (and considering that we often need to
+     * compare events at end-points, this happens frequently enough to warrant
+     * special casing).
+     */
+    enum {
+       HAVE_NEITHER = 0x0,
+       HAVE_AX      = 0x1,
+       HAVE_BX      = 0x2,
+       HAVE_BOTH    = HAVE_AX | HAVE_BX
+    } have_ax_bx = HAVE_BOTH;
+    int32_t ax = 0, bx = 0;
+
+    if (y == a->edge.line.p1.y)
+	ax = a->edge.line.p1.x;
+    else if (y == a->edge.line.p2.y)
+	ax = a->edge.line.p2.x;
+    else
+	have_ax_bx &= ~HAVE_AX;
+
+    if (y == b->edge.line.p1.y)
+	bx = b->edge.line.p1.x;
+    else if (y == b->edge.line.p2.y)
+	bx = b->edge.line.p2.x;
+    else
+	have_ax_bx &= ~HAVE_BX;
+
+    switch (have_ax_bx) {
+    default:
+    case HAVE_NEITHER:
+	return edges_compare_x_for_y_general (a, b, y);
+    case HAVE_AX:
+	return -edge_compare_for_y_against_x (b, y, ax);
+    case HAVE_BX:
+	return edge_compare_for_y_against_x (a, y, bx);
+    case HAVE_BOTH:
+	return ax - bx;
+    }
+}
+
+static inline int
+_line_equal (const cairo_line_t *a, const cairo_line_t *b)
+{
+    return (a->p1.x == b->p1.x && a->p1.y == b->p1.y &&
+	    a->p2.x == b->p2.x && a->p2.y == b->p2.y);
+}
+
+static int
+_cairo_bo_sweep_line_compare_edges (cairo_bo_sweep_line_t	*sweep_line,
+				    const cairo_bo_edge_t	*a,
+				    const cairo_bo_edge_t	*b)
+{
+    int cmp;
+
+    /* compare the edges if not identical */
+    if (! _line_equal (&a->edge.line, &b->edge.line)) {
+	cmp = edges_compare_x_for_y (a, b, sweep_line->current_y);
+	if (cmp)
+	    return cmp;
+
+	/* The two edges intersect exactly at y, so fall back on slope
+	 * comparison. We know that this compare_edges function will be
+	 * called only when starting a new edge, (not when stopping an
+	 * edge), so we don't have to worry about conditionally inverting
+	 * the sense of _slope_compare. */
+	cmp = _slope_compare (a, b);
+	if (cmp)
+	    return cmp;
+    }
+
+    /* We've got two collinear edges now. */
+    return b->edge.bottom - a->edge.bottom;
+}
+
+static inline cairo_int64_t
+det32_64 (int32_t a, int32_t b,
+	  int32_t c, int32_t d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int64_sub (_cairo_int32x32_64_mul (a, d),
+			     _cairo_int32x32_64_mul (b, c));
+}
+
+static inline cairo_int128_t
+det64x32_128 (cairo_int64_t a, int32_t       b,
+	      cairo_int64_t c, int32_t       d)
+{
+    /* det = a * d - b * c */
+    return _cairo_int128_sub (_cairo_int64x32_128_mul (a, d),
+			      _cairo_int64x32_128_mul (c, b));
+}
+
+/* Compute the intersection of two lines as defined by two edges. The
+ * result is provided as a coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection or
+ * %CAIRO_BO_STATUS_PARALLEL if the two lines are exactly parallel.
+ */
+static cairo_bool_t
+intersect_lines (cairo_bo_edge_t		*a,
+		 cairo_bo_edge_t		*b,
+		 cairo_bo_intersect_point_t	*intersection)
+{
+    cairo_int64_t a_det, b_det;
+
+    /* XXX: We're assuming here that dx and dy will still fit in 32
+     * bits. That's not true in general as there could be overflow. We
+     * should prevent that before the tessellation algorithm begins.
+     * What we're doing to mitigate this is to perform clamping in
+     * cairo_bo_tessellate_polygon().
+     */
+    int32_t dx1 = a->edge.line.p1.x - a->edge.line.p2.x;
+    int32_t dy1 = a->edge.line.p1.y - a->edge.line.p2.y;
+
+    int32_t dx2 = b->edge.line.p1.x - b->edge.line.p2.x;
+    int32_t dy2 = b->edge.line.p1.y - b->edge.line.p2.y;
+
+    cairo_int64_t den_det;
+    cairo_int64_t R;
+    cairo_quorem64_t qr;
+
+    den_det = det32_64 (dx1, dy1, dx2, dy2);
+
+     /* Q: Can we determine that the lines do not intersect (within range)
+      * much more cheaply than computing the intersection point i.e. by
+      * avoiding the division?
+      *
+      *   X = ax + t * adx = bx + s * bdx;
+      *   Y = ay + t * ady = by + s * bdy;
+      *   ∴ t * (ady*bdx - bdy*adx) = bdx * (by - ay) + bdy * (ax - bx)
+      *   => t * L = R
+      *
+      * Therefore we can reject any intersection (under the criteria for
+      * valid intersection events) if:
+      *   L^R < 0 => t < 0, or
+      *   L<R => t > 1
+      *
+      * (where top/bottom must at least extend to the line endpoints).
+      *
+      * A similar substitution can be performed for s, yielding:
+      *   s * (ady*bdx - bdy*adx) = ady * (ax - bx) - adx * (ay - by)
+      */
+    R = det32_64 (dx2, dy2,
+		  b->edge.line.p1.x - a->edge.line.p1.x,
+		  b->edge.line.p1.y - a->edge.line.p1.y);
+    if (_cairo_int64_negative (den_det)) {
+	if (_cairo_int64_ge (den_det, R))
+	    return FALSE;
+    } else {
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+    }
+
+    R = det32_64 (dy1, dx1,
+		  a->edge.line.p1.y - b->edge.line.p1.y,
+		  a->edge.line.p1.x - b->edge.line.p1.x);
+    if (_cairo_int64_negative (den_det)) {
+	if (_cairo_int64_ge (den_det, R))
+	    return FALSE;
+    } else {
+	if (_cairo_int64_le (den_det, R))
+	    return FALSE;
+    }
+
+    /* We now know that the two lines should intersect within range. */
+
+    a_det = det32_64 (a->edge.line.p1.x, a->edge.line.p1.y,
+		      a->edge.line.p2.x, a->edge.line.p2.y);
+    b_det = det32_64 (b->edge.line.p1.x, b->edge.line.p1.y,
+		      b->edge.line.p2.x, b->edge.line.p2.y);
+
+    /* x = det (a_det, dx1, b_det, dx2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dx1,
+						       b_det, dx2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+#if 0
+    intersection->x.exactness = _cairo_int64_is_zero (qr.rem) ? EXACT : INEXACT;
+#else
+    intersection->x.exactness = EXACT;
+    if (! _cairo_int64_is_zero (qr.rem)) {
+	if (_cairo_int64_negative (den_det) ^ _cairo_int64_negative (qr.rem))
+	    qr.rem = _cairo_int64_negate (qr.rem);
+	qr.rem = _cairo_int64_mul (qr.rem, _cairo_int32_to_int64 (2));
+	if (_cairo_int64_ge (qr.rem, den_det)) {
+	    qr.quo = _cairo_int64_add (qr.quo,
+				       _cairo_int32_to_int64 (_cairo_int64_negative (qr.quo) ? -1 : 1));
+	} else
+	    intersection->x.exactness = INEXACT;
+    }
+#endif
+    intersection->x.ordinate = _cairo_int64_to_int32 (qr.quo);
+
+    /* y = det (a_det, dy1, b_det, dy2) / den_det */
+    qr = _cairo_int_96by64_32x64_divrem (det64x32_128 (a_det, dy1,
+						       b_det, dy2),
+					 den_det);
+    if (_cairo_int64_eq (qr.rem, den_det))
+	return FALSE;
+#if 0
+    intersection->y.exactness = _cairo_int64_is_zero (qr.rem) ? EXACT : INEXACT;
+#else
+    intersection->y.exactness = EXACT;
+    if (! _cairo_int64_is_zero (qr.rem)) {
+	if (_cairo_int64_negative (den_det) ^ _cairo_int64_negative (qr.rem))
+	    qr.rem = _cairo_int64_negate (qr.rem);
+	qr.rem = _cairo_int64_mul (qr.rem, _cairo_int32_to_int64 (2));
+	if (_cairo_int64_ge (qr.rem, den_det)) {
+	    qr.quo = _cairo_int64_add (qr.quo,
+				       _cairo_int32_to_int64 (_cairo_int64_negative (qr.quo) ? -1 : 1));
+	} else
+	    intersection->y.exactness = INEXACT;
+    }
+#endif
+    intersection->y.ordinate = _cairo_int64_to_int32 (qr.quo);
+
+    return TRUE;
+}
+
+static int
+_cairo_bo_intersect_ordinate_32_compare (cairo_bo_intersect_ordinate_t	a,
+					 int32_t			b)
+{
+    /* First compare the quotient */
+    if (a.ordinate > b)
+	return +1;
+    if (a.ordinate < b)
+	return -1;
+    /* With quotient identical, if remainder is 0 then compare equal */
+    /* Otherwise, the non-zero remainder makes a > b */
+    return INEXACT == a.exactness;
+}
+
+/* Does the given edge contain the given point. The point must already
+ * be known to be contained within the line determined by the edge,
+ * (most likely the point results from an intersection of this edge
+ * with another).
+ *
+ * If we had exact arithmetic, then this function would simply be a
+ * matter of examining whether the y value of the point lies within
+ * the range of y values of the edge. But since intersection points
+ * are not exact due to being rounded to the nearest integer within
+ * the available precision, we must also examine the x value of the
+ * point.
+ *
+ * The definition of "contains" here is that the given intersection
+ * point will be seen by the sweep line after the start event for the
+ * given edge and before the stop event for the edge. See the comments
+ * in the implementation for more details.
+ */
+static cairo_bool_t
+_cairo_bo_edge_contains_intersect_point (cairo_bo_edge_t		*edge,
+					 cairo_bo_intersect_point_t	*point)
+{
+    int cmp_top, cmp_bottom;
+
+    /* XXX: When running the actual algorithm, we don't actually need to
+     * compare against edge->top at all here, since any intersection above
+     * top is eliminated early via a slope comparison. We're leaving these
+     * here for now only for the sake of the quadratic-time intersection
+     * finder which needs them.
+     */
+
+    cmp_top = _cairo_bo_intersect_ordinate_32_compare (point->y,
+						       edge->edge.top);
+    cmp_bottom = _cairo_bo_intersect_ordinate_32_compare (point->y,
+							  edge->edge.bottom);
+
+    if (cmp_top < 0 || cmp_bottom > 0)
+    {
+	return FALSE;
+    }
+
+    if (cmp_top > 0 && cmp_bottom < 0)
+    {
+	return TRUE;
+    }
+
+    /* At this stage, the point lies on the same y value as either
+     * edge->top or edge->bottom, so we have to examine the x value in
+     * order to properly determine containment. */
+
+    /* If the y value of the point is the same as the y value of the
+     * top of the edge, then the x value of the point must be greater
+     * to be considered as inside the edge. Similarly, if the y value
+     * of the point is the same as the y value of the bottom of the
+     * edge, then the x value of the point must be less to be
+     * considered as inside. */
+
+    if (cmp_top == 0) {
+	cairo_fixed_t top_x;
+
+	top_x = _line_compute_intersection_x_for_y (&edge->edge.line,
+						    edge->edge.top);
+	return _cairo_bo_intersect_ordinate_32_compare (point->x, top_x) > 0;
+    } else { /* cmp_bottom == 0 */
+	cairo_fixed_t bot_x;
+
+	bot_x = _line_compute_intersection_x_for_y (&edge->edge.line,
+						    edge->edge.bottom);
+	return _cairo_bo_intersect_ordinate_32_compare (point->x, bot_x) < 0;
+    }
+}
+
+/* Compute the intersection of two edges. The result is provided as a
+ * coordinate pair of 128-bit integers.
+ *
+ * Returns %CAIRO_BO_STATUS_INTERSECTION if there is an intersection
+ * that is within both edges, %CAIRO_BO_STATUS_NO_INTERSECTION if the
+ * intersection of the lines defined by the edges occurs outside of
+ * one or both edges, and %CAIRO_BO_STATUS_PARALLEL if the two edges
+ * are exactly parallel.
+ *
+ * Note that when determining if a candidate intersection is "inside"
+ * an edge, we consider both the infinitesimal shortening and the
+ * infinitesimal tilt rules described by John Hobby. Specifically, if
+ * the intersection is exactly the same as an edge point, it is
+ * effectively outside (no intersection is returned). Also, if the
+ * intersection point has the same
+ */
+static cairo_bool_t
+_cairo_bo_edge_intersect (cairo_bo_edge_t	*a,
+			  cairo_bo_edge_t	*b,
+			  cairo_bo_point32_t	*intersection)
+{
+    cairo_bo_intersect_point_t quorem;
+
+    if (! intersect_lines (a, b, &quorem))
+	return FALSE;
+
+    if (! _cairo_bo_edge_contains_intersect_point (a, &quorem))
+	return FALSE;
+
+    if (! _cairo_bo_edge_contains_intersect_point (b, &quorem))
+	return FALSE;
+
+    /* Now that we've correctly compared the intersection point and
+     * determined that it lies within the edge, then we know that we
+     * no longer need any more bits of storage for the intersection
+     * than we do for our edge coordinates. We also no longer need the
+     * remainder from the division. */
+    intersection->x = quorem.x.ordinate;
+    intersection->y = quorem.y.ordinate;
+
+    return TRUE;
+}
+
+static inline int
+cairo_bo_event_compare (const cairo_bo_event_t *a,
+			const cairo_bo_event_t *b)
+{
+    int cmp;
+
+    cmp = _cairo_bo_point32_compare (&a->point, &b->point);
+    if (cmp)
+	return cmp;
+
+    cmp = a->type - b->type;
+    if (cmp)
+	return cmp;
+
+    return a - b;
+}
+
+static inline void
+_pqueue_init (pqueue_t *pq)
+{
+    pq->max_size = ARRAY_LENGTH (pq->elements_embedded);
+    pq->size = 0;
+
+    pq->elements = pq->elements_embedded;
+}
+
+static inline void
+_pqueue_fini (pqueue_t *pq)
+{
+    if (pq->elements != pq->elements_embedded)
+	free (pq->elements);
+}
+
+static cairo_status_t
+_pqueue_grow (pqueue_t *pq)
+{
+    cairo_bo_event_t **new_elements;
+    pq->max_size *= 2;
+
+    if (pq->elements == pq->elements_embedded) {
+	new_elements = _cairo_malloc_ab (pq->max_size,
+					 sizeof (cairo_bo_event_t *));
+	if (unlikely (new_elements == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	memcpy (new_elements, pq->elements_embedded,
+		sizeof (pq->elements_embedded));
+    } else {
+	new_elements = _cairo_realloc_ab (pq->elements,
+					  pq->max_size,
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (new_elements == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pq->elements = new_elements;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline cairo_status_t
+_pqueue_push (pqueue_t *pq, cairo_bo_event_t *event)
+{
+    cairo_bo_event_t **elements;
+    int i, parent;
+
+    if (unlikely (pq->size + 1 == pq->max_size)) {
+	cairo_status_t status;
+
+	status = _pqueue_grow (pq);
+	if (unlikely (status))
+	    return status;
+    }
+
+    elements = pq->elements;
+
+    for (i = ++pq->size;
+	 i != PQ_FIRST_ENTRY &&
+	 cairo_bo_event_compare (event,
+				 elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = event;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline void
+_pqueue_pop (pqueue_t *pq)
+{
+    cairo_bo_event_t **elements = pq->elements;
+    cairo_bo_event_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    cairo_bo_event_compare (elements[child+1],
+				    elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (cairo_bo_event_compare (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline cairo_status_t
+_cairo_bo_event_queue_insert (cairo_bo_event_queue_t	*queue,
+			      cairo_bo_event_type_t	 type,
+			      cairo_bo_edge_t		*e1,
+			      cairo_bo_edge_t		*e2,
+			      const cairo_point_t	 *point)
+{
+    cairo_bo_queue_event_t *event;
+
+    event = _cairo_freepool_alloc (&queue->pool);
+    if (unlikely (event == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    event->type = type;
+    event->e1 = e1;
+    event->e2 = e2;
+    event->point = *point;
+
+    return _pqueue_push (&queue->pqueue, (cairo_bo_event_t *) event);
+}
+
+static void
+_cairo_bo_event_queue_delete (cairo_bo_event_queue_t *queue,
+			      cairo_bo_event_t	     *event)
+{
+    _cairo_freepool_free (&queue->pool, event);
+}
+
+static cairo_bo_event_t *
+_cairo_bo_event_dequeue (cairo_bo_event_queue_t *event_queue)
+{
+    cairo_bo_event_t *event, *cmp;
+
+    event = event_queue->pqueue.elements[PQ_FIRST_ENTRY];
+    cmp = *event_queue->start_events;
+    if (event == NULL ||
+	(cmp != NULL && cairo_bo_event_compare (cmp, event) < 0))
+    {
+	event = cmp;
+	event_queue->start_events++;
+    }
+    else
+    {
+	_pqueue_pop (&event_queue->pqueue);
+    }
+
+    return event;
+}
+
+CAIRO_COMBSORT_DECLARE (_cairo_bo_event_queue_sort,
+			cairo_bo_event_t *,
+			cairo_bo_event_compare)
+
+static void
+_cairo_bo_event_queue_init (cairo_bo_event_queue_t	 *event_queue,
+			    cairo_bo_event_t		**start_events,
+			    int				  num_events)
+{
+    _cairo_bo_event_queue_sort (start_events, num_events);
+    start_events[num_events] = NULL;
+
+    event_queue->start_events = start_events;
+
+    _cairo_freepool_init (&event_queue->pool,
+			  sizeof (cairo_bo_queue_event_t));
+    _pqueue_init (&event_queue->pqueue);
+    event_queue->pqueue.elements[PQ_FIRST_ENTRY] = NULL;
+}
+
+static cairo_status_t
+_cairo_bo_event_queue_insert_stop (cairo_bo_event_queue_t	*event_queue,
+				   cairo_bo_edge_t		*edge)
+{
+    cairo_bo_point32_t point;
+
+    point.y = edge->edge.bottom;
+    point.x = _line_compute_intersection_x_for_y (&edge->edge.line,
+						  point.y);
+    return _cairo_bo_event_queue_insert (event_queue,
+					 CAIRO_BO_EVENT_TYPE_STOP,
+					 edge, NULL,
+					 &point);
+}
+
+static void
+_cairo_bo_event_queue_fini (cairo_bo_event_queue_t *event_queue)
+{
+    _pqueue_fini (&event_queue->pqueue);
+    _cairo_freepool_fini (&event_queue->pool);
+}
+
+static inline cairo_status_t
+_cairo_bo_event_queue_insert_if_intersect_below_current_y (cairo_bo_event_queue_t	*event_queue,
+							   cairo_bo_edge_t	*left,
+							   cairo_bo_edge_t *right)
+{
+    cairo_bo_point32_t intersection;
+
+    if (_line_equal (&left->edge.line, &right->edge.line))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* The names "left" and "right" here are correct descriptions of
+     * the order of the two edges within the active edge list. So if a
+     * slope comparison also puts left less than right, then we know
+     * that the intersection of these two segments has already
+     * occurred before the current sweep line position. */
+    if (_slope_compare (left, right) <= 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! _cairo_bo_edge_intersect (left, right, &intersection))
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_bo_event_queue_insert (event_queue,
+					 CAIRO_BO_EVENT_TYPE_INTERSECTION,
+					 left, right,
+					 &intersection);
+}
+
+static void
+_cairo_bo_sweep_line_init (cairo_bo_sweep_line_t *sweep_line)
+{
+    sweep_line->head = NULL;
+    sweep_line->current_y = INT32_MIN;
+    sweep_line->current_edge = NULL;
+}
+
+static cairo_status_t
+_cairo_bo_sweep_line_insert (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t		*edge)
+{
+    if (sweep_line->current_edge != NULL) {
+	cairo_bo_edge_t *prev, *next;
+	int cmp;
+
+	cmp = _cairo_bo_sweep_line_compare_edges (sweep_line,
+						  sweep_line->current_edge,
+						  edge);
+	if (cmp < 0) {
+	    prev = sweep_line->current_edge;
+	    next = prev->next;
+	    while (next != NULL &&
+		   _cairo_bo_sweep_line_compare_edges (sweep_line,
+						       next, edge) < 0)
+	    {
+		prev = next, next = prev->next;
+	    }
+
+	    prev->next = edge;
+	    edge->prev = prev;
+	    edge->next = next;
+	    if (next != NULL)
+		next->prev = edge;
+	} else if (cmp > 0) {
+	    next = sweep_line->current_edge;
+	    prev = next->prev;
+	    while (prev != NULL &&
+		   _cairo_bo_sweep_line_compare_edges (sweep_line,
+						       prev, edge) > 0)
+	    {
+		next = prev, prev = next->prev;
+	    }
+
+	    next->prev = edge;
+	    edge->next = next;
+	    edge->prev = prev;
+	    if (prev != NULL)
+		prev->next = edge;
+	    else
+		sweep_line->head = edge;
+	} else {
+	    prev = sweep_line->current_edge;
+	    edge->prev = prev;
+	    edge->next = prev->next;
+	    if (prev->next != NULL)
+		prev->next->prev = edge;
+	    prev->next = edge;
+	}
+    } else {
+	sweep_line->head = edge;
+    }
+
+    sweep_line->current_edge = edge;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_bo_sweep_line_delete (cairo_bo_sweep_line_t	*sweep_line,
+			     cairo_bo_edge_t	*edge)
+{
+    if (edge->prev != NULL)
+	edge->prev->next = edge->next;
+    else
+	sweep_line->head = edge->next;
+
+    if (edge->next != NULL)
+	edge->next->prev = edge->prev;
+
+    if (sweep_line->current_edge == edge)
+	sweep_line->current_edge = edge->prev ? edge->prev : edge->next;
+}
+
+static void
+_cairo_bo_sweep_line_swap (cairo_bo_sweep_line_t	*sweep_line,
+			   cairo_bo_edge_t		*left,
+			   cairo_bo_edge_t		*right)
+{
+    if (left->prev != NULL)
+	left->prev->next = right;
+    else
+	sweep_line->head = right;
+
+    if (right->next != NULL)
+	right->next->prev = left;
+
+    left->next = right->next;
+    right->next = left;
+
+    right->prev = left->prev;
+    left->prev = right;
+}
+
+static inline cairo_bool_t
+edges_colinear (const cairo_bo_edge_t *a, const cairo_bo_edge_t *b)
+{
+    if (_line_equal (&a->edge.line, &b->edge.line))
+	return TRUE;
+
+    if (_slope_compare (a, b))
+	return FALSE;
+
+    /* The choice of y is not truly arbitrary since we must guarantee that it
+     * is greater than the start of either line.
+     */
+    if (a->edge.line.p1.y == b->edge.line.p1.y) {
+	return a->edge.line.p1.x == b->edge.line.p1.x;
+    } else if (a->edge.line.p2.y == b->edge.line.p2.y) {
+	return a->edge.line.p2.x == b->edge.line.p2.x;
+    } else if (a->edge.line.p1.y < b->edge.line.p1.y) {
+	return edge_compare_for_y_against_x (b,
+					     a->edge.line.p1.y,
+					     a->edge.line.p1.x) == 0;
+    } else {
+	return edge_compare_for_y_against_x (a,
+					     b->edge.line.p1.y,
+					     b->edge.line.p1.x) == 0;
+    }
+}
+
+static void
+_cairo_bo_edge_end (cairo_bo_edge_t	*left,
+		    int32_t		 bot,
+		    cairo_polygon_t	*polygon)
+{
+    cairo_bo_deferred_t *d = &left->deferred;
+
+    if (likely (d->top < bot)) {
+	_cairo_polygon_add_line (polygon,
+				 &left->edge.line,
+				 d->top, bot,
+				 1);
+	_cairo_polygon_add_line (polygon,
+				 &d->right->edge.line,
+				 d->top, bot,
+				 -1);
+    }
+
+    d->right = NULL;
+}
+
+
+static inline void
+_cairo_bo_edge_start_or_continue (cairo_bo_edge_t	*left,
+				  cairo_bo_edge_t	*right,
+				  int			 top,
+				  cairo_polygon_t	*polygon)
+{
+    if (left->deferred.right == right)
+	return;
+
+    if (left->deferred.right != NULL) {
+	if (right != NULL && edges_colinear (left->deferred.right, right))
+	{
+	    /* continuation on right, so just swap edges */
+	    left->deferred.right = right;
+	    return;
+	}
+
+	_cairo_bo_edge_end (left, top, polygon);
+    }
+
+    if (right != NULL && ! edges_colinear (left, right)) {
+	left->deferred.top = top;
+	left->deferred.right = right;
+    }
+}
+
+static inline void
+_active_edges_to_polygon (cairo_bo_edge_t		*left,
+			  int32_t			 top,
+			  cairo_fill_rule_t		 fill_rule,
+			  cairo_polygon_t	        *polygon)
+{
+    cairo_bo_edge_t *right;
+    unsigned int mask;
+
+    if (fill_rule == CAIRO_FILL_RULE_WINDING)
+	mask = ~0;
+    else
+	mask = 1;
+
+    while (left != NULL) {
+	int in_out = left->edge.dir;
+
+	right = left->next;
+	if (left->deferred.right == NULL) {
+	    while (right != NULL && right->deferred.right == NULL)
+		right = right->next;
+
+	    if (right != NULL && edges_colinear (left, right)) {
+		/* continuation on left */
+		left->deferred = right->deferred;
+		right->deferred.right = NULL;
+	    }
+	}
+
+	right = left->next;
+	while (right != NULL) {
+	    if (right->deferred.right != NULL)
+		_cairo_bo_edge_end (right, top, polygon);
+
+	    in_out += right->edge.dir;
+	    if ((in_out & mask) == 0) {
+		/* skip co-linear edges */
+		if (right->next == NULL || !edges_colinear (right, right->next))
+		    break;
+	    }
+
+	    right = right->next;
+	}
+
+	_cairo_bo_edge_start_or_continue (left, right, top, polygon);
+
+	left = right;
+	if (left != NULL)
+	    left = left->next;
+    }
+}
+
+
+static cairo_status_t
+_cairo_bentley_ottmann_tessellate_bo_edges (cairo_bo_event_t   **start_events,
+					    int			 num_events,
+					    cairo_fill_rule_t	 fill_rule,
+					    cairo_polygon_t	*polygon)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS; /* silence compiler */
+    cairo_bo_event_queue_t event_queue;
+    cairo_bo_sweep_line_t sweep_line;
+    cairo_bo_event_t *event;
+    cairo_bo_edge_t *left, *right;
+    cairo_bo_edge_t *e1, *e2;
+
+    _cairo_bo_event_queue_init (&event_queue, start_events, num_events);
+    _cairo_bo_sweep_line_init (&sweep_line);
+
+    while ((event = _cairo_bo_event_dequeue (&event_queue))) {
+	if (event->point.y != sweep_line.current_y) {
+	    _active_edges_to_polygon (sweep_line.head,
+				      sweep_line.current_y,
+				      fill_rule, polygon);
+
+	    sweep_line.current_y = event->point.y;
+	}
+
+	switch (event->type) {
+	case CAIRO_BO_EVENT_TYPE_START:
+	    e1 = &((cairo_bo_start_event_t *) event)->edge;
+
+	    status = _cairo_bo_sweep_line_insert (&sweep_line, e1);
+	    if (unlikely (status))
+		goto unwind;
+
+	    status = _cairo_bo_event_queue_insert_stop (&event_queue, e1);
+	    if (unlikely (status))
+		goto unwind;
+
+	    left = e1->prev;
+	    right = e1->next;
+
+	    if (left != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, left, e1);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    if (right != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, e1, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_STOP:
+	    e1 = ((cairo_bo_queue_event_t *) event)->e1;
+	    _cairo_bo_event_queue_delete (&event_queue, event);
+
+	    left = e1->prev;
+	    right = e1->next;
+
+	    _cairo_bo_sweep_line_delete (&sweep_line, e1);
+
+	    if (e1->deferred.right != NULL)
+		_cairo_bo_edge_end (e1, e1->edge.bottom, polygon);
+
+	    if (left != NULL && right != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, left, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+
+	case CAIRO_BO_EVENT_TYPE_INTERSECTION:
+	    e1 = ((cairo_bo_queue_event_t *) event)->e1;
+	    e2 = ((cairo_bo_queue_event_t *) event)->e2;
+	    _cairo_bo_event_queue_delete (&event_queue, event);
+
+	    /* skip this intersection if its edges are not adjacent */
+	    if (e2 != e1->next)
+		break;
+
+	    left = e1->prev;
+	    right = e2->next;
+
+	    _cairo_bo_sweep_line_swap (&sweep_line, e1, e2);
+
+	    /* after the swap e2 is left of e1 */
+
+	    if (left != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, left, e2);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    if (right != NULL) {
+		status = _cairo_bo_event_queue_insert_if_intersect_below_current_y (&event_queue, e1, right);
+		if (unlikely (status))
+		    goto unwind;
+	    }
+
+	    break;
+	}
+    }
+
+ unwind:
+    _cairo_bo_event_queue_fini (&event_queue);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_polygon_reduce (cairo_polygon_t *polygon,
+		       cairo_fill_rule_t fill_rule)
+{
+    cairo_status_t status;
+    cairo_bo_start_event_t stack_events[CAIRO_STACK_ARRAY_LENGTH (cairo_bo_start_event_t)];
+    cairo_bo_start_event_t *events;
+    cairo_bo_event_t *stack_event_ptrs[ARRAY_LENGTH (stack_events) + 1];
+    cairo_bo_event_t **event_ptrs;
+    int num_limits;
+    int num_events;
+    int i;
+
+    num_events = polygon->num_edges;
+    if (unlikely (0 == num_events))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (DEBUG_POLYGON) {
+	FILE *file = fopen ("reduce_in.txt", "w");
+	_cairo_debug_print_polygon (file, polygon);
+	fclose (file);
+    }
+
+    events = stack_events;
+    event_ptrs = stack_event_ptrs;
+    if (num_events > ARRAY_LENGTH (stack_events)) {
+	events = _cairo_malloc_ab_plus_c (num_events,
+					  sizeof (cairo_bo_start_event_t) +
+					  sizeof (cairo_bo_event_t *),
+					  sizeof (cairo_bo_event_t *));
+	if (unlikely (events == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	event_ptrs = (cairo_bo_event_t **) (events + num_events);
+    }
+
+    for (i = 0; i < num_events; i++) {
+	event_ptrs[i] = (cairo_bo_event_t *) &events[i];
+
+	events[i].type = CAIRO_BO_EVENT_TYPE_START;
+	events[i].point.y = polygon->edges[i].top;
+	events[i].point.x =
+	    _line_compute_intersection_x_for_y (&polygon->edges[i].line,
+						events[i].point.y);
+
+	events[i].edge.edge = polygon->edges[i];
+	events[i].edge.deferred.right = NULL;
+	events[i].edge.prev = NULL;
+	events[i].edge.next = NULL;
+    }
+
+    num_limits = polygon->num_limits; polygon->num_limits = 0;
+    polygon->num_edges = 0;
+
+    status = _cairo_bentley_ottmann_tessellate_bo_edges (event_ptrs,
+							 num_events,
+							 fill_rule,
+							 polygon);
+    polygon->num_limits = num_limits;
+
+    if (events != stack_events)
+	free (events);
+
+    if (DEBUG_POLYGON) {
+	FILE *file = fopen ("reduce_out.txt", "w");
+	_cairo_debug_print_polygon (file, polygon);
+	fclose (file);
+    }
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-polygon.c b/libs/cairo-1.16.0/src/cairo-polygon.c
new file mode 100644
index 0000000..0e0b813
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-polygon.c
@@ -0,0 +1,608 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-contour-private.h"
+#include "cairo-error-private.h"
+
+#define DEBUG_POLYGON 0
+
+#if DEBUG_POLYGON && !NDEBUG
+static void
+assert_last_edge_is_valid(cairo_polygon_t *polygon,
+			  const cairo_box_t *limit)
+{
+    cairo_edge_t *edge;
+    cairo_fixed_t x;
+
+    edge = &polygon->edges[polygon->num_edges-1];
+
+    assert (edge->bottom > edge->top);
+    assert (edge->top >= limit->p1.y);
+    assert (edge->bottom <= limit->p2.y);
+
+    x = _cairo_edge_compute_intersection_x_for_y (&edge->line.p1,
+						  &edge->line.p2,
+						  edge->top);
+    assert (x >= limit->p1.x);
+    assert (x <= limit->p2.x);
+
+    x = _cairo_edge_compute_intersection_x_for_y (&edge->line.p1,
+						  &edge->line.p2,
+						  edge->bottom);
+    assert (x >= limit->p1.x);
+    assert (x <= limit->p2.x);
+}
+#else
+#define assert_last_edge_is_valid(p, l)
+#endif
+
+static void
+_cairo_polygon_add_edge (cairo_polygon_t *polygon,
+			 const cairo_point_t *p1,
+			 const cairo_point_t *p2,
+			 int dir);
+
+void
+_cairo_polygon_limit (cairo_polygon_t *polygon,
+		     const cairo_box_t *limits,
+		     int num_limits)
+{
+    int n;
+
+    polygon->limits = limits;
+    polygon->num_limits = num_limits;
+
+    if (polygon->num_limits) {
+	polygon->limit = limits[0];
+	for (n = 1; n < num_limits; n++) {
+	    if (limits[n].p1.x < polygon->limit.p1.x)
+		polygon->limit.p1.x = limits[n].p1.x;
+
+	    if (limits[n].p1.y < polygon->limit.p1.y)
+		polygon->limit.p1.y = limits[n].p1.y;
+
+	    if (limits[n].p2.x > polygon->limit.p2.x)
+		polygon->limit.p2.x = limits[n].p2.x;
+
+	    if (limits[n].p2.y > polygon->limit.p2.y)
+		polygon->limit.p2.y = limits[n].p2.y;
+	}
+    }
+}
+
+void
+_cairo_polygon_limit_to_clip (cairo_polygon_t *polygon,
+			      const cairo_clip_t *clip)
+{
+    if (clip)
+	_cairo_polygon_limit (polygon, clip->boxes, clip->num_boxes);
+    else
+	_cairo_polygon_limit (polygon, 0, 0);
+}
+
+void
+_cairo_polygon_init (cairo_polygon_t *polygon,
+		     const cairo_box_t *limits,
+		     int num_limits)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (polygon, sizeof (cairo_polygon_t)));
+
+    polygon->status = CAIRO_STATUS_SUCCESS;
+
+    polygon->num_edges = 0;
+
+    polygon->edges = polygon->edges_embedded;
+    polygon->edges_size = ARRAY_LENGTH (polygon->edges_embedded);
+
+    polygon->extents.p1.x = polygon->extents.p1.y = INT32_MAX;
+    polygon->extents.p2.x = polygon->extents.p2.y = INT32_MIN;
+
+    _cairo_polygon_limit (polygon, limits, num_limits);
+}
+
+void
+_cairo_polygon_init_with_clip (cairo_polygon_t *polygon,
+			       const cairo_clip_t *clip)
+{
+    if (clip)
+	_cairo_polygon_init (polygon, clip->boxes, clip->num_boxes);
+    else
+	_cairo_polygon_init (polygon, 0, 0);
+}
+
+cairo_status_t
+_cairo_polygon_init_boxes (cairo_polygon_t *polygon,
+			   const cairo_boxes_t *boxes)
+{
+    const struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (polygon, sizeof (cairo_polygon_t)));
+
+    polygon->status = CAIRO_STATUS_SUCCESS;
+
+    polygon->num_edges = 0;
+
+    polygon->edges = polygon->edges_embedded;
+    polygon->edges_size = ARRAY_LENGTH (polygon->edges_embedded);
+    if (boxes->num_boxes > ARRAY_LENGTH (polygon->edges_embedded)/2) {
+	polygon->edges_size = 2 * boxes->num_boxes;
+	polygon->edges = _cairo_malloc_ab (polygon->edges_size,
+					   2*sizeof(cairo_edge_t));
+	if (unlikely (polygon->edges == NULL))
+	    return polygon->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    polygon->extents.p1.x = polygon->extents.p1.y = INT32_MAX;
+    polygon->extents.p2.x = polygon->extents.p2.y = INT32_MIN;
+
+    polygon->limits = NULL;
+    polygon->num_limits = 0;
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    cairo_point_t p1, p2;
+
+	    p1 = chunk->base[i].p1;
+	    p2.x = p1.x;
+	    p2.y = chunk->base[i].p2.y;
+	    _cairo_polygon_add_edge (polygon, &p1, &p2, 1);
+
+	    p1 = chunk->base[i].p2;
+	    p2.x = p1.x;
+	    p2.y = chunk->base[i].p1.y;
+	    _cairo_polygon_add_edge (polygon, &p1, &p2, 1);
+	}
+    }
+
+    return polygon->status;
+}
+
+cairo_status_t
+_cairo_polygon_init_box_array (cairo_polygon_t *polygon,
+			       cairo_box_t *boxes,
+			       int num_boxes)
+{
+    int i;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (polygon, sizeof (cairo_polygon_t)));
+
+    polygon->status = CAIRO_STATUS_SUCCESS;
+
+    polygon->num_edges = 0;
+
+    polygon->edges = polygon->edges_embedded;
+    polygon->edges_size = ARRAY_LENGTH (polygon->edges_embedded);
+    if (num_boxes > ARRAY_LENGTH (polygon->edges_embedded)/2) {
+	polygon->edges_size = 2 * num_boxes;
+	polygon->edges = _cairo_malloc_ab (polygon->edges_size,
+					   2*sizeof(cairo_edge_t));
+	if (unlikely (polygon->edges == NULL))
+	    return polygon->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    polygon->extents.p1.x = polygon->extents.p1.y = INT32_MAX;
+    polygon->extents.p2.x = polygon->extents.p2.y = INT32_MIN;
+
+    polygon->limits = NULL;
+    polygon->num_limits = 0;
+
+    for (i = 0; i < num_boxes; i++) {
+	cairo_point_t p1, p2;
+
+	p1 = boxes[i].p1;
+	p2.x = p1.x;
+	p2.y = boxes[i].p2.y;
+	_cairo_polygon_add_edge (polygon, &p1, &p2, 1);
+
+	p1 = boxes[i].p2;
+	p2.x = p1.x;
+	p2.y = boxes[i].p1.y;
+	_cairo_polygon_add_edge (polygon, &p1, &p2, 1);
+    }
+
+    return polygon->status;
+}
+
+
+void
+_cairo_polygon_fini (cairo_polygon_t *polygon)
+{
+    if (polygon->edges != polygon->edges_embedded)
+	free (polygon->edges);
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (polygon, sizeof (cairo_polygon_t)));
+}
+
+/* make room for at least one more edge */
+static cairo_bool_t
+_cairo_polygon_grow (cairo_polygon_t *polygon)
+{
+    cairo_edge_t *new_edges;
+    int old_size = polygon->edges_size;
+    int new_size = 4 * old_size;
+
+    if (CAIRO_INJECT_FAULT ()) {
+	polygon->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return FALSE;
+    }
+
+    if (polygon->edges == polygon->edges_embedded) {
+	new_edges = _cairo_malloc_ab (new_size, sizeof (cairo_edge_t));
+	if (new_edges != NULL)
+	    memcpy (new_edges, polygon->edges, old_size * sizeof (cairo_edge_t));
+    } else {
+	new_edges = _cairo_realloc_ab (polygon->edges,
+		                       new_size, sizeof (cairo_edge_t));
+    }
+
+    if (unlikely (new_edges == NULL)) {
+	polygon->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return FALSE;
+    }
+
+    polygon->edges = new_edges;
+    polygon->edges_size = new_size;
+
+    return TRUE;
+}
+
+static void
+_add_edge (cairo_polygon_t *polygon,
+	   const cairo_point_t *p1,
+	   const cairo_point_t *p2,
+	   int top, int bottom,
+	   int dir)
+{
+    cairo_edge_t *edge;
+
+    assert (top < bottom);
+
+    if (unlikely (polygon->num_edges == polygon->edges_size)) {
+	if (! _cairo_polygon_grow (polygon))
+	    return;
+    }
+
+    edge = &polygon->edges[polygon->num_edges++];
+    edge->line.p1 = *p1;
+    edge->line.p2 = *p2;
+    edge->top = top;
+    edge->bottom = bottom;
+    edge->dir = dir;
+
+    if (top < polygon->extents.p1.y)
+	polygon->extents.p1.y = top;
+    if (bottom > polygon->extents.p2.y)
+	polygon->extents.p2.y = bottom;
+
+    if (p1->x < polygon->extents.p1.x || p1->x > polygon->extents.p2.x) {
+	cairo_fixed_t x = p1->x;
+	if (top != p1->y)
+	    x = _cairo_edge_compute_intersection_x_for_y (p1, p2, top);
+	if (x < polygon->extents.p1.x)
+	    polygon->extents.p1.x = x;
+	if (x > polygon->extents.p2.x)
+	    polygon->extents.p2.x = x;
+    }
+
+    if (p2->x < polygon->extents.p1.x || p2->x > polygon->extents.p2.x) {
+	cairo_fixed_t x = p2->x;
+	if (bottom != p2->y)
+	    x = _cairo_edge_compute_intersection_x_for_y (p1, p2, bottom);
+	if (x < polygon->extents.p1.x)
+	    polygon->extents.p1.x = x;
+	if (x > polygon->extents.p2.x)
+	    polygon->extents.p2.x = x;
+    }
+}
+
+static void
+_add_clipped_edge (cairo_polygon_t *polygon,
+		   const cairo_point_t *p1,
+		   const cairo_point_t *p2,
+		   const int top, const int bottom,
+		   const int dir)
+{
+    cairo_point_t bot_left, top_right;
+    cairo_fixed_t top_y, bot_y;
+    int n;
+
+    for (n = 0; n < polygon->num_limits; n++) {
+	const cairo_box_t *limits = &polygon->limits[n];
+	cairo_fixed_t pleft, pright;
+
+	if (top >= limits->p2.y)
+	    continue;
+	if (bottom <= limits->p1.y)
+	    continue;
+
+	bot_left.x = limits->p1.x;
+	bot_left.y = limits->p2.y;
+
+	top_right.x = limits->p2.x;
+	top_right.y = limits->p1.y;
+
+	/* The useful region */
+	top_y = MAX (top, limits->p1.y);
+	bot_y = MIN (bottom, limits->p2.y);
+
+	/* The projection of the edge on the horizontal axis */
+	pleft = MIN (p1->x, p2->x);
+	pright = MAX (p1->x, p2->x);
+
+	if (limits->p1.x <= pleft && pright <= limits->p2.x) {
+	    /* Projection of the edge completely contained in the box:
+	     * clip vertically by restricting top and bottom */
+
+	    _add_edge (polygon, p1, p2, top_y, bot_y, dir);
+	    assert_last_edge_is_valid (polygon, limits);
+	} else if (pright <= limits->p1.x) {
+	    /* Projection of the edge to the left of the box:
+	     * replace with the left side of the box (clipped top/bottom) */
+
+	    _add_edge (polygon, &limits->p1, &bot_left, top_y, bot_y, dir);
+	    assert_last_edge_is_valid (polygon, limits);
+	} else if (limits->p2.x <= pleft) {
+	    /* Projection of the edge to the right of the box:
+	     * replace with the right side of the box (clipped top/bottom) */
+
+	    _add_edge (polygon, &top_right, &limits->p2, top_y, bot_y, dir);
+	    assert_last_edge_is_valid (polygon, limits);
+	} else {
+	    /* The edge and the box intersect in a generic way */
+	    cairo_fixed_t left_y, right_y;
+	    cairo_bool_t top_left_to_bottom_right;
+
+	    /*
+	     * The edge intersects the lines corresponding to the left
+	     * and right sides of the limit box at left_y and right_y,
+	     * but we need to add edges for the range from top_y to
+	     * bot_y.
+	     *
+	     * For both intersections, there are three cases:
+	     *
+	     *  1) It is outside the vertical range of the limit
+	     *     box. In this case we can simply further clip the
+	     *     edge we will be emitting (i.e. restrict its
+	     *     top/bottom limits to those of the limit box).
+	     *
+	     *  2) It is inside the vertical range of the limit
+	     *     box. In this case, we need to add the vertical edge
+	     *     connecting the correct vertex to the intersection,
+	     *     in order to preserve the winding count.
+	     *
+	     *  3) It is exactly on the box. In this case, do nothing.
+	     *
+	     * These operations restrict the active range (stored in
+	     * top_y/bot_y) so that the p1-p2 edge is completely
+	     * inside the box if it is clipped to this vertical range.
+	     */
+
+	    top_left_to_bottom_right = (p1->x <= p2->x) == (p1->y <= p2->y);
+	    if (top_left_to_bottom_right) {
+		if (pleft >= limits->p1.x) {
+		    left_y = top_y;
+		} else {
+		    left_y = _cairo_edge_compute_intersection_y_for_x (p1, p2,
+								       limits->p1.x);
+		    if (_cairo_edge_compute_intersection_x_for_y (p1, p2, left_y) < limits->p1.x)
+			left_y++;
+		}
+
+		left_y = MIN (left_y, bot_y);
+		if (top_y < left_y) {
+		    _add_edge (polygon, &limits->p1, &bot_left,
+			       top_y, left_y, dir);
+		    assert_last_edge_is_valid (polygon, limits);
+		    top_y = left_y;
+		}
+
+		if (pright <= limits->p2.x) {
+		    right_y = bot_y;
+		} else {
+		    right_y = _cairo_edge_compute_intersection_y_for_x (p1, p2,
+									limits->p2.x);
+		    if (_cairo_edge_compute_intersection_x_for_y (p1, p2, right_y) > limits->p2.x)
+			right_y--;
+		}
+
+		right_y = MAX (right_y, top_y);
+		if (bot_y > right_y) {
+		    _add_edge (polygon, &top_right, &limits->p2,
+			       right_y, bot_y, dir);
+		    assert_last_edge_is_valid (polygon, limits);
+		    bot_y = right_y;
+		}
+	    } else {
+		if (pright <= limits->p2.x) {
+		    right_y = top_y;
+		} else {
+		    right_y = _cairo_edge_compute_intersection_y_for_x (p1, p2,
+									limits->p2.x);
+		    if (_cairo_edge_compute_intersection_x_for_y (p1, p2, right_y) > limits->p2.x)
+			right_y++;
+		}
+
+		right_y = MIN (right_y, bot_y);
+		if (top_y < right_y) {
+		    _add_edge (polygon, &top_right, &limits->p2,
+			       top_y, right_y, dir);
+		    assert_last_edge_is_valid (polygon, limits);
+		    top_y = right_y;
+		}
+
+		if (pleft >= limits->p1.x) {
+		    left_y = bot_y;
+		} else {
+		    left_y = _cairo_edge_compute_intersection_y_for_x (p1, p2,
+								       limits->p1.x);
+		    if (_cairo_edge_compute_intersection_x_for_y (p1, p2, left_y) < limits->p1.x)
+			left_y--;
+		}
+
+		left_y = MAX (left_y, top_y);
+		if (bot_y > left_y) {
+		    _add_edge (polygon, &limits->p1, &bot_left,
+			       left_y, bot_y, dir);
+		    assert_last_edge_is_valid (polygon, limits);
+		    bot_y = left_y;
+		}
+	    }
+
+	    if (top_y != bot_y) {
+		_add_edge (polygon, p1, p2, top_y, bot_y, dir);
+		assert_last_edge_is_valid (polygon, limits);
+	    }
+	}
+    }
+}
+
+static void
+_cairo_polygon_add_edge (cairo_polygon_t *polygon,
+			 const cairo_point_t *p1,
+			 const cairo_point_t *p2,
+			 int dir)
+{
+    /* drop horizontal edges */
+    if (p1->y == p2->y)
+	return;
+
+    if (p1->y > p2->y) {
+	const cairo_point_t *t;
+	t = p1, p1 = p2, p2 = t;
+	dir = -dir;
+    }
+
+    if (polygon->num_limits) {
+	if (p2->y <= polygon->limit.p1.y)
+	    return;
+
+	if (p1->y >= polygon->limit.p2.y)
+	    return;
+
+	_add_clipped_edge (polygon, p1, p2, p1->y, p2->y, dir);
+    } else
+	_add_edge (polygon, p1, p2, p1->y, p2->y, dir);
+}
+
+cairo_status_t
+_cairo_polygon_add_external_edge (void *polygon,
+				  const cairo_point_t *p1,
+				  const cairo_point_t *p2)
+{
+    _cairo_polygon_add_edge (polygon, p1, p2, 1);
+    return _cairo_polygon_status (polygon);
+}
+
+cairo_status_t
+_cairo_polygon_add_line (cairo_polygon_t *polygon,
+			 const cairo_line_t *line,
+			 int top, int bottom,
+			 int dir)
+{
+    /* drop horizontal edges */
+    if (line->p1.y == line->p2.y)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (bottom <= top)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (polygon->num_limits) {
+	if (line->p2.y <= polygon->limit.p1.y)
+	    return CAIRO_STATUS_SUCCESS;
+
+	if (line->p1.y >= polygon->limit.p2.y)
+	    return CAIRO_STATUS_SUCCESS;
+
+	_add_clipped_edge (polygon, &line->p1, &line->p2, top, bottom, dir);
+    } else
+	_add_edge (polygon, &line->p1, &line->p2, top, bottom, dir);
+
+    return polygon->status;
+}
+
+cairo_status_t
+_cairo_polygon_add_contour (cairo_polygon_t *polygon,
+			    const cairo_contour_t *contour)
+{
+    const struct _cairo_contour_chain *chain;
+    const cairo_point_t *prev = NULL;
+    int i;
+
+    if (contour->chain.num_points <= 1)
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    prev = &contour->chain.points[0];
+    for (chain = &contour->chain; chain; chain = chain->next) {
+	for (i = 0; i < chain->num_points; i++) {
+	    _cairo_polygon_add_edge (polygon, prev, &chain->points[i],
+				     contour->direction);
+	    prev = &chain->points[i];
+	}
+    }
+
+    return polygon->status;
+}
+
+void
+_cairo_polygon_translate (cairo_polygon_t *polygon, int dx, int dy)
+{
+    int n;
+
+    dx = _cairo_fixed_from_int (dx);
+    dy = _cairo_fixed_from_int (dy);
+
+    polygon->extents.p1.x += dx;
+    polygon->extents.p2.x += dx;
+    polygon->extents.p1.y += dy;
+    polygon->extents.p2.y += dy;
+
+    for (n = 0; n < polygon->num_edges; n++) {
+	cairo_edge_t *e = &polygon->edges[n];
+
+	e->top += dy;
+	e->bottom += dy;
+
+	e->line.p1.x += dx;
+	e->line.p2.x += dx;
+	e->line.p1.y += dy;
+	e->line.p2.y += dy;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-private.h b/libs/cairo-1.16.0/src/cairo-private.h
new file mode 100644
index 0000000..9f4f55b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-private.h
@@ -0,0 +1,64 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@redhat.com>
+ */
+
+#ifndef CAIRO_PRIVATE_H
+#define CAIRO_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-reference-count-private.h"
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo {
+    cairo_reference_count_t ref_count;
+    cairo_status_t status;
+    cairo_user_data_array_t user_data;
+
+    const cairo_backend_t *backend;
+};
+
+cairo_private cairo_t *
+_cairo_create_in_error (cairo_status_t status);
+
+cairo_private void
+_cairo_init (cairo_t *cr,
+	     const cairo_backend_t *backend);
+
+cairo_private void
+_cairo_fini (cairo_t *cr);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-ps-surface-private.h b/libs/cairo-1.16.0/src/cairo-ps-surface-private.h
new file mode 100644
index 0000000..e1681c8
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-ps-surface-private.h
@@ -0,0 +1,123 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Keith Packard <keithp@keithp.com>
+ */
+
+#ifndef CAIRO_PS_SURFACE_PRIVATE_H
+#define CAIRO_PS_SURFACE_PRIVATE_H
+
+#include "cairo-ps.h"
+
+#include "cairo-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-pdf-operators-private.h"
+
+#include <time.h>
+
+typedef struct _cairo_ps_form {
+    cairo_hash_entry_t base;
+    unsigned char *unique_id;
+    unsigned long unique_id_length;
+    cairo_bool_t is_image;
+    int id;
+    cairo_surface_t *src_surface;
+    cairo_filter_t filter;
+
+    /* Union of source extents required for all operations using this form */
+    cairo_rectangle_int_t required_extents;
+} cairo_ps_form_t;
+
+typedef struct cairo_ps_surface {
+    cairo_surface_t base;
+
+    /* Here final_stream corresponds to the stream/file passed to
+     * cairo_ps_surface_create surface is built. Meanwhile stream is a
+     * temporary stream in which the file output is built, (so that
+     * the header can be built and inserted into the target stream
+     * before the contents of the temporary stream are copied). */
+    cairo_output_stream_t *final_stream;
+
+    FILE *tmpfile;
+    cairo_output_stream_t *stream;
+
+    cairo_bool_t eps;
+    cairo_bool_t contains_eps;
+    cairo_content_t content;
+    double width;
+    double height;
+    cairo_point_int_t document_bbox_p1, document_bbox_p2; /* in PS coordinates */
+    cairo_rectangle_int_t surface_extents;
+    cairo_bool_t surface_bounded;
+    cairo_matrix_t cairo_to_ps;
+    cairo_bool_t paint_proc; /* TRUE if surface will be used in a PaintProc */
+
+    cairo_bool_t current_pattern_is_solid_color;
+    cairo_color_t current_color;
+
+    int num_pages;
+
+    cairo_paginated_mode_t paginated_mode;
+
+    cairo_bool_t force_fallbacks;
+    cairo_bool_t has_creation_date;
+    time_t creation_date;
+
+    cairo_scaled_font_subsets_t *font_subsets;
+
+    cairo_list_t document_media;
+    cairo_array_t dsc_header_comments;
+    cairo_array_t dsc_setup_comments;
+    cairo_array_t dsc_page_setup_comments;
+
+    cairo_array_t recording_surf_stack;
+
+    cairo_array_t *dsc_comment_target;
+
+    cairo_ps_level_t ps_level;
+    cairo_ps_level_t ps_level_used;
+
+    cairo_surface_clipper_t clipper;
+
+    cairo_pdf_operators_t pdf_operators;
+    cairo_surface_t *paginated_surface;
+    cairo_hash_table_t *forms;
+    int num_forms;
+    long total_form_size;
+} cairo_ps_surface_t;
+
+#endif /* CAIRO_PS_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-ps-surface.c b/libs/cairo-1.16.0/src/cairo-ps-surface.c
new file mode 100644
index 0000000..0a17b81
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-ps-surface.c
@@ -0,0 +1,5429 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2007,2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Keith Packard <keithp@keithp.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+
+/*
+ * Design of the PS output:
+ *
+ * The PS output is harmonised with the PDF operations using PS procedures
+ * to emulate the PDF operators.
+ *
+ * This has a number of advantages:
+ *   1. A large chunk of code is shared between the PDF and PS backends.
+ *      See cairo-pdf-operators.
+ *   2. Using gs to do PS -> PDF and PDF -> PS will always work well.
+ */
+
+#define _DEFAULT_SOURCE /* for ctime_r(), snprintf(), strdup() */
+#include "cairoint.h"
+
+#include "cairo-ps.h"
+#include "cairo-ps-surface-private.h"
+
+#include "cairo-pdf-operators-private.h"
+#include "cairo-pdf-shading-private.h"
+
+#include "cairo-array-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-list-inline.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-type3-glyph-surface-private.h"
+#include "cairo-image-info-private.h"
+#include "cairo-tag-attributes-private.h"
+
+#include <stdio.h>
+#include <ctype.h>
+#include <time.h>
+#include <zlib.h>
+#include <errno.h>
+
+/* Forms are emitted at the start and stored in memory so we limit the
+ * total size of all forms to prevent running out of memory. If this
+ * limit is exceeded, surfaces that would be stored in forms are
+ * emitted each time the surface is used. */
+#define MAX_L2_FORM_DATA (256*1024)
+#define MAX_L3_FORM_DATA (2*1024*1024) /* Assume Level 3 printers have more memory */
+
+/* #define DEBUG_PS 1 */
+
+#if DEBUG_PS
+#define DEBUG_FALLBACK(s) \
+    fprintf (stderr, "%s::%d -- %s\n", __FUNCTION__, __LINE__, (s))
+#else
+#define DEBUG_FALLBACK(s)
+#endif
+
+#ifndef HAVE_CTIME_R
+#define ctime_r(T, BUF) ctime (T)
+#endif
+
+/**
+ * SECTION:cairo-ps
+ * @Title: PostScript Surfaces
+ * @Short_Description: Rendering PostScript documents
+ * @See_Also: #cairo_surface_t
+ *
+ * The PostScript surface is used to render cairo graphics to Adobe
+ * PostScript files and is a multi-page vector surface backend.
+ *
+ * The following mime types are supported: %CAIRO_MIME_TYPE_JPEG,
+ * %CAIRO_MIME_TYPE_UNIQUE_ID,
+ * %CAIRO_MIME_TYPE_CCITT_FAX, %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
+ * %CAIRO_MIME_TYPE_CCITT_FAX, %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
+ * %CAIRO_MIME_TYPE_EPS, %CAIRO_MIME_TYPE_EPS_PARAMS.
+ *
+ * Source surfaces used by the PostScript surface that have a
+ * %CAIRO_MIME_TYPE_UNIQUE_ID mime type will be stored in PostScript
+ * printer memory for the duration of the print
+ * job. %CAIRO_MIME_TYPE_UNIQUE_ID should only be used for small
+ * frequently used sources.
+ *
+ * The %CAIRO_MIME_TYPE_CCITT_FAX and %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS mime types
+ * are documented in [CCITT Fax Images][ccitt].
+ *
+ * # Embedding EPS files # {#eps}
+ *
+ * Encapsulated PostScript files can be embedded in the PS output by
+ * setting the CAIRO_MIME_TYPE_EPS mime data on a surface to the EPS
+ * data and painting the surface.  The EPS will be scaled and
+ * translated to the extents of the surface the EPS data is attached
+ * to.
+ *
+ * The %CAIRO_MIME_TYPE_EPS mime type requires the
+ * %CAIRO_MIME_TYPE_EPS_PARAMS mime data to also be provided in order
+ * to specify the embeddding parameters.  %CAIRO_MIME_TYPE_EPS_PARAMS
+ * mime data must contain a string of the form "bbox=[llx lly urx
+ * ury]" that specifies the bounding box (in PS coordinates) of the
+ * EPS graphics. The parameters are: lower left x, lower left y, upper
+ * right x, upper right y. Normally the bbox data is identical to the
+ * %%%BoundingBox data in the EPS file.
+ *
+ **/
+
+/**
+ * CAIRO_HAS_PS_SURFACE:
+ *
+ * Defined if the PostScript surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.2
+ **/
+
+typedef enum {
+    CAIRO_PS_COMPRESS_NONE,
+    CAIRO_PS_COMPRESS_LZW,
+    CAIRO_PS_COMPRESS_DEFLATE
+} cairo_ps_compress_t;
+
+typedef enum {
+    CAIRO_EMIT_SURFACE_ANALYZE,
+    CAIRO_EMIT_SURFACE_EMIT,
+    CAIRO_EMIT_SURFACE_EMIT_FORM
+} cairo_emit_surface_mode_t;
+
+typedef struct  {
+    /* input params */
+    cairo_surface_t *src_surface;
+    cairo_operator_t op;
+    const cairo_rectangle_int_t *src_surface_extents;
+    cairo_bool_t src_surface_bounded;
+    const cairo_rectangle_int_t *src_op_extents; /* operation extents in src space */
+    cairo_filter_t filter;
+    cairo_bool_t stencil_mask; /* TRUE if source is to be used as a mask */
+
+    /* output params */
+    cairo_bool_t is_image; /* returns TRUE if PS image will be emitted */
+                           /*         FALSE if recording will be emitted */
+    long approx_size;
+    int eod_count;
+} cairo_emit_surface_params_t;
+
+static const cairo_surface_backend_t cairo_ps_surface_backend;
+static const cairo_paginated_surface_backend_t cairo_ps_surface_paginated_backend;
+
+static cairo_bool_t
+_cairo_ps_surface_get_extents (void		       *abstract_surface,
+			       cairo_rectangle_int_t   *rectangle);
+
+static void
+_cairo_ps_form_emit (void *entry, void *closure);
+
+static const cairo_ps_level_t _cairo_ps_levels[] =
+{
+    CAIRO_PS_LEVEL_2,
+    CAIRO_PS_LEVEL_3
+};
+
+#define CAIRO_PS_LEVEL_LAST ARRAY_LENGTH (_cairo_ps_levels)
+
+static const char * _cairo_ps_level_strings[CAIRO_PS_LEVEL_LAST] =
+{
+    "PS Level 2",
+    "PS Level 3"
+};
+
+static const char *_cairo_ps_supported_mime_types[] =
+{
+    CAIRO_MIME_TYPE_JPEG,
+    CAIRO_MIME_TYPE_CCITT_FAX,
+    CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
+    NULL
+};
+
+typedef struct _cairo_page_standard_media {
+    const char *name;
+    int width;
+    int height;
+} cairo_page_standard_media_t;
+
+static const cairo_page_standard_media_t _cairo_page_standard_media[] =
+{
+    { "A0",       2384, 3371 },
+    { "A1",       1685, 2384 },
+    { "A2",       1190, 1684 },
+    { "A3",        842, 1190 },
+    { "A4",        595,  842 },
+    { "A5",        420,  595 },
+    { "B4",        729, 1032 },
+    { "B5",        516,  729 },
+    { "Letter",    612,  792 },
+    { "Tabloid",   792, 1224 },
+    { "Ledger",   1224,  792 },
+    { "Legal",     612, 1008 },
+    { "Statement", 396,  612 },
+    { "Executive", 540,  720 },
+    { "Folio",     612,  936 },
+    { "Quarto",    610,  780 },
+    { "10x14",     720, 1008 },
+};
+
+typedef struct _cairo_page_media {
+    char *name;
+    int width;
+    int height;
+    cairo_list_t link;
+} cairo_page_media_t;
+
+static void
+_cairo_ps_form_init_key (cairo_ps_form_t *key)
+{
+    key->base.hash = _cairo_hash_bytes (_CAIRO_HASH_INIT_VALUE,
+					key->unique_id, key->unique_id_length);
+}
+
+static cairo_bool_t
+_cairo_ps_form_equal (const void *key_a, const void *key_b)
+{
+    const cairo_ps_form_t *a = key_a;
+    const cairo_ps_form_t *b = key_b;
+
+    if (a->filter != b->filter)
+	return FALSE;
+
+    if (a->unique_id_length != b->unique_id_length)
+	return FALSE;
+
+    return memcmp (a->unique_id, b->unique_id, a->unique_id_length) == 0;
+}
+
+static void
+_cairo_ps_form_pluck (void *entry, void *closure)
+{
+    cairo_ps_form_t *surface_entry = entry;
+    cairo_hash_table_t *patterns = closure;
+
+    _cairo_hash_table_remove (patterns, &surface_entry->base);
+    free (surface_entry->unique_id);
+    cairo_surface_destroy (surface_entry->src_surface);
+    free (surface_entry);
+}
+
+static void
+_cairo_ps_surface_emit_header (cairo_ps_surface_t *surface)
+{
+    char ctime_buf[26];
+    time_t now;
+    char **comments;
+    int i, num_comments;
+    int level;
+    const char *eps_header = "";
+    cairo_bool_t has_bbox;
+
+    if (surface->has_creation_date)
+	now = surface->creation_date;
+    else
+	now = time (NULL);
+
+    if (surface->ps_level_used == CAIRO_PS_LEVEL_2)
+	level = 2;
+    else
+	level = 3;
+
+    if (surface->eps)
+	eps_header = " EPSF-3.0";
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%!PS-Adobe-3.0%s\n"
+				 "%%%%Creator: cairo %s (https://cairographics.org)\n"
+				 "%%%%CreationDate: %s"
+				 "%%%%Pages: %d\n",
+				 eps_header,
+				 cairo_version_string (),
+				 ctime_r (&now, ctime_buf),
+				 surface->num_pages);
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%DocumentData: Clean7Bit\n"
+				 "%%%%LanguageLevel: %d\n",
+				 level);
+
+    if (!cairo_list_is_empty (&surface->document_media)) {
+	cairo_page_media_t *page;
+	cairo_bool_t first = TRUE;
+
+	cairo_list_foreach_entry (page, cairo_page_media_t, &surface->document_media, link) {
+	    if (first) {
+		_cairo_output_stream_printf (surface->final_stream,
+					     "%%%%DocumentMedia: ");
+		first = FALSE;
+	    } else {
+		_cairo_output_stream_printf (surface->final_stream,
+					     "%%%%+ ");
+	    }
+	    _cairo_output_stream_printf (surface->final_stream,
+					 "%s %d %d 0 () ()\n",
+					 page->name,
+					 page->width,
+					 page->height);
+	}
+    }
+
+    has_bbox = FALSE;
+    num_comments = _cairo_array_num_elements (&surface->dsc_header_comments);
+    comments = _cairo_array_index (&surface->dsc_header_comments, 0);
+    for (i = 0; i < num_comments; i++) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "%s\n", comments[i]);
+	if (strncmp (comments[i], "%%BoundingBox:", 14) == 0)
+	    has_bbox = TRUE;
+
+	free (comments[i]);
+	comments[i] = NULL;
+    }
+
+    if (!has_bbox) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "%%%%BoundingBox: %d %d %d %d\n",
+				     surface->document_bbox_p1.x,
+				     surface->document_bbox_p1.y,
+				     surface->document_bbox_p2.x,
+				     surface->document_bbox_p2.y);
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndComments\n");
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginProlog\n");
+
+    if (surface->eps) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "50 dict begin\n");
+    } else {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "/languagelevel where\n"
+				     "{ pop languagelevel } { 1 } ifelse\n"
+				     "%d lt { /Helvetica findfont 12 scalefont setfont 50 500 moveto\n"
+				     "  (This print job requires a PostScript Language Level %d printer.) show\n"
+				     "  showpage quit } if\n",
+				     level,
+				     level);
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "/q { gsave } bind def\n"
+				 "/Q { grestore } bind def\n"
+				 "/cm { 6 array astore concat } bind def\n"
+				 "/w { setlinewidth } bind def\n"
+				 "/J { setlinecap } bind def\n"
+				 "/j { setlinejoin } bind def\n"
+				 "/M { setmiterlimit } bind def\n"
+				 "/d { setdash } bind def\n"
+				 "/m { moveto } bind def\n"
+				 "/l { lineto } bind def\n"
+				 "/c { curveto } bind def\n"
+				 "/h { closepath } bind def\n"
+				 "/re { exch dup neg 3 1 roll 5 3 roll moveto 0 rlineto\n"
+				 "      0 exch rlineto 0 rlineto closepath } bind def\n"
+				 "/S { stroke } bind def\n"
+				 "/f { fill } bind def\n"
+				 "/f* { eofill } bind def\n"
+				 "/n { newpath } bind def\n"
+				 "/W { clip } bind def\n"
+				 "/W* { eoclip } bind def\n"
+				 "/BT { } bind def\n"
+				 "/ET { } bind def\n"
+				 "/BDC { mark 3 1 roll /BDC pdfmark } bind def\n"
+				 "/EMC { mark /EMC pdfmark } bind def\n"
+				 "/cairo_store_point { /cairo_point_y exch def /cairo_point_x exch def } def\n"
+				 "/Tj { show currentpoint cairo_store_point } bind def\n"
+				 "/TJ {\n"
+				 "  {\n"
+				 "    dup\n"
+				 "    type /stringtype eq\n"
+				 "    { show } { -0.001 mul 0 cairo_font_matrix dtransform rmoveto } ifelse\n"
+				 "  } forall\n"
+				 "  currentpoint cairo_store_point\n"
+				 "} bind def\n"
+				 "/cairo_selectfont { cairo_font_matrix aload pop pop pop 0 0 6 array astore\n"
+				 "    cairo_font exch selectfont cairo_point_x cairo_point_y moveto } bind def\n"
+				 "/Tf { pop /cairo_font exch def /cairo_font_matrix where\n"
+				 "      { pop cairo_selectfont } if } bind def\n"
+				 "/Td { matrix translate cairo_font_matrix matrix concatmatrix dup\n"
+				 "      /cairo_font_matrix exch def dup 4 get exch 5 get cairo_store_point\n"
+				 "      /cairo_font where { pop cairo_selectfont } if } bind def\n"
+				 "/Tm { 2 copy 8 2 roll 6 array astore /cairo_font_matrix exch def\n"
+				 "      cairo_store_point /cairo_font where { pop cairo_selectfont } if } bind def\n"
+				 "/g { setgray } bind def\n"
+				 "/rg { setrgbcolor } bind def\n"
+				 "/d1 { setcachedevice } bind def\n"
+				 "/cairo_data_source {\n"
+				 "  CairoDataIndex CairoData length lt\n"
+				 "    { CairoData CairoDataIndex get /CairoDataIndex CairoDataIndex 1 add def }\n"
+				 "    { () } ifelse\n"
+				 "} def\n"
+				 "/cairo_flush_ascii85_file { cairo_ascii85_file status { cairo_ascii85_file flushfile } if } def\n"
+				 "/cairo_image { image cairo_flush_ascii85_file } def\n"
+				 "/cairo_imagemask { imagemask cairo_flush_ascii85_file } def\n");
+
+    if (!surface->eps) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "/cairo_set_page_size {\n"
+				     "  %% Change paper size, but only if different from previous paper size otherwise\n"
+				     "  %% duplex fails. PLRM specifies a tolerance of 5 pts when matching paper size\n"
+				     "  %% so we use the same when checking if the size changes.\n"
+				     "  /setpagedevice where {\n"
+				     "    pop currentpagedevice\n"
+				     "    /PageSize known {\n"
+				     "      2 copy\n"
+				     "      currentpagedevice /PageSize get aload pop\n"
+				     "      exch 4 1 roll\n"
+				     "      sub abs 5 gt\n"
+				     "      3 1 roll\n"
+				     "      sub abs 5 gt\n"
+				     "      or\n"
+				     "    } {\n"
+				     "      true\n"
+				     "    } ifelse\n"
+				     "    {\n"
+				     "      2 array astore\n"
+				     "      2 dict begin\n"
+				     "        /PageSize exch def\n"
+				     "        /ImagingBBox null def\n"
+				     "      currentdict end\n"
+				     "      setpagedevice\n"
+				     "    } {\n"
+				     "      pop pop\n"
+				     "    } ifelse\n"
+				     "  } {\n"
+				     "    pop\n"
+				     "  } ifelse\n"
+				     "} def\n");
+    }
+    if (surface->contains_eps) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "/cairo_eps_begin {\n"
+				     "  /cairo_save_state save def\n"
+				     "  /dict_count countdictstack def\n"
+				     "  /op_count count 1 sub def\n"
+				     "  userdict begin\n"
+				     "  /showpage { } def\n"
+				     "  0 g 0 J 1 w 0 j 10 M [ ] 0 d n\n"
+				     "} bind def\n"
+				     "/cairo_eps_end {\n"
+				     "  count op_count sub { pop } repeat\n"
+				     "  countdictstack dict_count sub { end } repeat\n"
+				     "  cairo_save_state restore\n"
+				     "} bind def\n");
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndProlog\n");
+
+    num_comments = _cairo_array_num_elements (&surface->dsc_setup_comments);
+    if (num_comments) {
+	comments = _cairo_array_index (&surface->dsc_setup_comments, 0);
+	for (i = 0; i < num_comments; i++) {
+	    _cairo_output_stream_printf (surface->final_stream,
+					 "%s\n", comments[i]);
+	    free (comments[i]);
+	    comments[i] = NULL;
+	}
+    }
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_type1_font_subset (cairo_ps_surface_t		*surface,
+					  cairo_scaled_font_subset_t	*font_subset)
+
+
+{
+    cairo_type1_subset_t subset;
+    cairo_status_t status;
+    int length;
+    char name[64];
+
+    snprintf (name, sizeof name, "f-%d-%d",
+	      font_subset->font_id, font_subset->subset_id);
+    status = _cairo_type1_subset_init (&subset, name, font_subset, TRUE);
+    if (unlikely (status))
+	return status;
+
+    /* FIXME: Figure out document structure convention for fonts */
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%% _cairo_ps_surface_emit_type1_font_subset\n");
+#endif
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginResource: font %s\n",
+				 subset.base_font);
+    length = subset.header_length + subset.data_length + subset.trailer_length;
+    _cairo_output_stream_write (surface->final_stream, subset.data, length);
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndResource\n");
+
+    _cairo_type1_subset_fini (&subset);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+static cairo_status_t
+_cairo_ps_surface_emit_type1_font_fallback (cairo_ps_surface_t		*surface,
+                                            cairo_scaled_font_subset_t	*font_subset)
+{
+    cairo_type1_subset_t subset;
+    cairo_status_t status;
+    int length;
+    char name[64];
+
+    snprintf (name, sizeof name, "f-%d-%d",
+	      font_subset->font_id, font_subset->subset_id);
+    status = _cairo_type1_fallback_init_hex (&subset, name, font_subset);
+    if (unlikely (status))
+	return status;
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%% _cairo_ps_surface_emit_type1_font_fallback\n");
+#endif
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginResource: font %s\n",
+				 subset.base_font);
+    length = subset.header_length + subset.data_length + subset.trailer_length;
+    _cairo_output_stream_write (surface->final_stream, subset.data, length);
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndResource\n");
+
+    _cairo_type1_fallback_fini (&subset);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_truetype_font_subset (cairo_ps_surface_t		*surface,
+					     cairo_scaled_font_subset_t	*font_subset)
+
+
+{
+    cairo_truetype_subset_t subset;
+    cairo_status_t status;
+    unsigned int i, begin, end;
+
+    status = _cairo_truetype_subset_init_ps (&subset, font_subset);
+    if (unlikely (status))
+	return status;
+
+    /* FIXME: Figure out document structure convention for fonts */
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%% _cairo_ps_surface_emit_truetype_font_subset\n");
+#endif
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginResource: font %s\n",
+				 subset.ps_name);
+    _cairo_output_stream_printf (surface->final_stream,
+				 "11 dict begin\n"
+				 "/FontType 42 def\n"
+				 "/FontName /%s def\n"
+				 "/PaintType 0 def\n"
+				 "/FontMatrix [ 1 0 0 1 0 0 ] def\n"
+				 "/FontBBox [ 0 0 0 0 ] def\n"
+				 "/Encoding 256 array def\n"
+				 "0 1 255 { Encoding exch /.notdef put } for\n",
+				 subset.ps_name);
+
+    /* FIXME: Figure out how subset->x_max etc maps to the /FontBBox */
+
+    if (font_subset->is_latin) {
+	for (i = 1; i < 256; i++) {
+	    if (font_subset->latin_to_subset_glyph_index[i] > 0) {
+		if (font_subset->glyph_names != NULL) {
+		    _cairo_output_stream_printf (surface->final_stream,
+						 "Encoding %d /%s put\n",
+						 i, font_subset->glyph_names[font_subset->latin_to_subset_glyph_index[i]]);
+		} else {
+		    _cairo_output_stream_printf (surface->final_stream,
+						 "Encoding %d /g%ld put\n", i, font_subset->latin_to_subset_glyph_index[i]);
+		}
+	    }
+	}
+    } else {
+	for (i = 1; i < font_subset->num_glyphs; i++) {
+	    if (font_subset->glyph_names != NULL) {
+		_cairo_output_stream_printf (surface->final_stream,
+					     "Encoding %d /%s put\n",
+					     i, font_subset->glyph_names[i]);
+	    } else {
+		_cairo_output_stream_printf (surface->final_stream,
+					     "Encoding %d /g%d put\n", i, i);
+	    }
+	}
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "/CharStrings %d dict dup begin\n"
+				 "/.notdef 0 def\n",
+				 font_subset->num_glyphs);
+
+    for (i = 1; i < font_subset->num_glyphs; i++) {
+	if (font_subset->glyph_names != NULL) {
+	    _cairo_output_stream_printf (surface->final_stream,
+					 "/%s %d def\n",
+					 font_subset->glyph_names[i], i);
+	} else {
+	    _cairo_output_stream_printf (surface->final_stream,
+					 "/g%d %d def\n", i, i);
+	}
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "end readonly def\n");
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "/sfnts [\n");
+    begin = 0;
+    end = 0;
+    for (i = 0; i < subset.num_string_offsets; i++) {
+        end = subset.string_offsets[i];
+        _cairo_output_stream_printf (surface->final_stream,"<");
+        _cairo_output_stream_write_hex_string (surface->final_stream,
+                                               subset.data + begin, end - begin);
+        _cairo_output_stream_printf (surface->final_stream,"00>\n");
+        begin = end;
+    }
+    if (subset.data_length > end) {
+        _cairo_output_stream_printf (surface->final_stream,"<");
+        _cairo_output_stream_write_hex_string (surface->final_stream,
+                                               subset.data + end, subset.data_length - end);
+        _cairo_output_stream_printf (surface->final_stream,"00>\n");
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "] def\n"
+				 "/f-%d-%d currentdict end definefont pop\n",
+				 font_subset->font_id,
+				 font_subset->subset_id);
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndResource\n");
+    _cairo_truetype_subset_fini (&subset);
+
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ps_emit_imagemask (cairo_image_surface_t *image,
+			  cairo_output_stream_t *stream)
+{
+    uint8_t *row, *byte;
+    int rows, cols;
+
+    /* The only image type supported by Type 3 fonts are 1-bit image
+     * masks */
+    assert (image->format == CAIRO_FORMAT_A1);
+
+    _cairo_output_stream_printf (stream,
+				 "<<\n"
+				 "   /ImageType 1\n"
+				 "   /Width %d\n"
+				 "   /Height %d\n"
+				 "   /ImageMatrix [%d 0 0 %d 0 %d]\n"
+				 "   /Decode [1 0]\n"
+				 "   /BitsPerComponent 1\n",
+				 image->width,
+				 image->height,
+				 image->width,
+				 -image->height,
+				 image->height);
+
+    _cairo_output_stream_printf (stream,
+				 "   /DataSource {<\n   ");
+    for (row = image->data, rows = image->height; rows; row += image->stride, rows--) {
+	for (byte = row, cols = (image->width + 7) / 8; cols; byte++, cols--) {
+	    uint8_t output_byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (*byte);
+	    _cairo_output_stream_printf (stream, "%02x ", output_byte);
+	}
+	_cairo_output_stream_printf (stream, "\n   ");
+    }
+    _cairo_output_stream_printf (stream, ">}\n>>\n");
+
+    _cairo_output_stream_printf (stream,
+				 "imagemask\n");
+
+    return _cairo_output_stream_get_status (stream);
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_analyze_user_font_subset (cairo_scaled_font_subset_t *font_subset,
+					    void		       *closure)
+{
+    cairo_ps_surface_t *surface = closure;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    unsigned int i;
+    cairo_surface_t *type3_surface;
+
+    type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
+						       NULL,
+						       _cairo_ps_emit_imagemask,
+						       surface->font_subsets,
+						       TRUE);
+
+    for (i = 0; i < font_subset->num_glyphs; i++) {
+	status = _cairo_type3_glyph_surface_analyze_glyph (type3_surface,
+							   font_subset->glyphs[i]);
+	if (unlikely (status))
+	    break;
+
+    }
+    cairo_surface_finish (type3_surface);
+    cairo_surface_destroy (type3_surface);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_type3_font_subset (cairo_ps_surface_t		*surface,
+					  cairo_scaled_font_subset_t	*font_subset)
+
+
+{
+    cairo_status_t status;
+    unsigned int i;
+    cairo_box_t font_bbox = {{0,0},{0,0}};
+    cairo_box_t bbox = {{0,0},{0,0}};
+    cairo_surface_t *type3_surface;
+    double width;
+
+    if (font_subset->num_glyphs == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%% _cairo_ps_surface_emit_type3_font_subset\n");
+#endif
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginResource: font\n");
+    _cairo_output_stream_printf (surface->final_stream,
+				 "8 dict begin\n"
+				 "/FontType 3 def\n"
+				 "/FontMatrix [1 0 0 -1 0 0] def\n"
+				 "/Encoding 256 array def\n"
+				 "0 1 255 { Encoding exch /.notdef put } for\n");
+
+    type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
+						       NULL,
+						       _cairo_ps_emit_imagemask,
+						       surface->font_subsets,
+						       TRUE);
+    status = type3_surface->status;
+    if (unlikely (status))
+	return status;
+
+    for (i = 0; i < font_subset->num_glyphs; i++) {
+	if (font_subset->glyph_names != NULL) {
+	    _cairo_output_stream_printf (surface->final_stream,
+					 "Encoding %d /%s put\n",
+					 i, font_subset->glyph_names[i]);
+	} else {
+	    _cairo_output_stream_printf (surface->final_stream,
+					 "Encoding %d /g%d put\n", i, i);
+	}
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "/Glyphs [\n");
+
+    for (i = 0; i < font_subset->num_glyphs; i++) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "    { %% %d\n", i);
+	status = _cairo_type3_glyph_surface_emit_glyph (type3_surface,
+							surface->final_stream,
+							font_subset->glyphs[i],
+							&bbox,
+							&width);
+	if (unlikely (status))
+	    break;
+
+	_cairo_output_stream_printf (surface->final_stream,
+				     "    }\n");
+        if (i == 0) {
+            font_bbox.p1.x = bbox.p1.x;
+            font_bbox.p1.y = bbox.p1.y;
+            font_bbox.p2.x = bbox.p2.x;
+            font_bbox.p2.y = bbox.p2.y;
+        } else {
+            if (bbox.p1.x < font_bbox.p1.x)
+                font_bbox.p1.x = bbox.p1.x;
+            if (bbox.p1.y < font_bbox.p1.y)
+                font_bbox.p1.y = bbox.p1.y;
+            if (bbox.p2.x > font_bbox.p2.x)
+                font_bbox.p2.x = bbox.p2.x;
+            if (bbox.p2.y > font_bbox.p2.y)
+                font_bbox.p2.y = bbox.p2.y;
+        }
+    }
+    cairo_surface_finish (type3_surface);
+    cairo_surface_destroy (type3_surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "] def\n"
+				 "/FontBBox [%f %f %f %f] def\n"
+				 "/BuildChar {\n"
+				 "  exch /Glyphs get\n"
+				 "  exch get\n"
+				 "  10 dict begin exec end\n"
+				 "} bind def\n"
+				 "currentdict\n"
+				 "end\n"
+				 "/f-%d-%d exch definefont pop\n",
+				 _cairo_fixed_to_double (font_bbox.p1.x),
+				 - _cairo_fixed_to_double (font_bbox.p2.y),
+				 _cairo_fixed_to_double (font_bbox.p2.x),
+				 - _cairo_fixed_to_double (font_bbox.p1.y),
+				 font_subset->font_id,
+				 font_subset->subset_id);
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndResource\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_emit_unscaled_font_subset (cairo_scaled_font_subset_t	*font_subset,
+				            void			*closure)
+{
+    cairo_ps_surface_t *surface = closure;
+    cairo_int_status_t status;
+
+    status = _cairo_scaled_font_subset_create_glyph_names (font_subset);
+    if (_cairo_int_status_is_error (status))
+	return status;
+
+    status = _cairo_ps_surface_emit_type1_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_ps_surface_emit_truetype_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_ps_surface_emit_type1_font_fallback (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    ASSERT_NOT_REACHED;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_emit_scaled_font_subset (cairo_scaled_font_subset_t *font_subset,
+                                           void			      *closure)
+{
+    cairo_ps_surface_t *surface = closure;
+    cairo_int_status_t status;
+
+    status = _cairo_scaled_font_subset_create_glyph_names (font_subset);
+    if (_cairo_int_status_is_error (status))
+	return status;
+
+    status = _cairo_ps_surface_emit_type3_font_subset (surface, font_subset);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    ASSERT_NOT_REACHED;
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_font_subsets (cairo_ps_surface_t *surface)
+{
+    cairo_status_t status;
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%% _cairo_ps_surface_emit_font_subsets\n");
+#endif
+
+    status = _cairo_scaled_font_subsets_foreach_user (surface->font_subsets,
+						      _cairo_ps_surface_analyze_user_font_subset,
+						      surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_scaled_font_subsets_foreach_unscaled (surface->font_subsets,
+                                                          _cairo_ps_surface_emit_unscaled_font_subset,
+                                                          surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_scaled_font_subsets_foreach_scaled (surface->font_subsets,
+                                                        _cairo_ps_surface_emit_scaled_font_subset,
+                                                        surface);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_scaled_font_subsets_foreach_user (surface->font_subsets,
+						    _cairo_ps_surface_emit_scaled_font_subset,
+						    surface);
+}
+
+
+static cairo_int_status_t
+_cairo_ps_surface_emit_forms (cairo_ps_surface_t *surface)
+{
+    _cairo_hash_table_foreach (surface->forms,
+			       _cairo_ps_form_emit,
+			       surface);
+    return surface->base.status;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_body (cairo_ps_surface_t *surface)
+{
+    char    buf[4096];
+    int	    n;
+
+    if (ferror (surface->tmpfile) != 0)
+	return _cairo_error (CAIRO_STATUS_TEMP_FILE_ERROR);
+
+    rewind (surface->tmpfile);
+    while ((n = fread (buf, 1, sizeof (buf), surface->tmpfile)) > 0)
+	_cairo_output_stream_write (surface->final_stream, buf, n);
+
+    if (ferror (surface->tmpfile) != 0)
+	return _cairo_error (CAIRO_STATUS_TEMP_FILE_ERROR);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_ps_surface_emit_footer (cairo_ps_surface_t *surface)
+{
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%Trailer\n");
+
+    if (surface->eps) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "end\n");
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EOF\n");
+}
+
+static cairo_bool_t
+_path_covers_bbox (cairo_ps_surface_t *surface,
+		   cairo_path_fixed_t *path)
+{
+    cairo_box_t box;
+
+    if (_cairo_path_fixed_is_box (path, &box)) {
+	cairo_rectangle_int_t rect;
+
+	_cairo_box_round_to_rectangle (&box, &rect);
+
+	/* skip trivial whole-page clips */
+	if (_cairo_rectangle_intersect (&rect, &surface->surface_extents)) {
+	    if (rect.x == surface->surface_extents.x &&
+		rect.width == surface->surface_extents.width &&
+		rect.y == surface->surface_extents.y &&
+		rect.height == surface->surface_extents.height)
+	    {
+		return TRUE;
+	    }
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_status_t
+_cairo_ps_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+					       cairo_path_fixed_t *path,
+					       cairo_fill_rule_t   fill_rule,
+					       double		    tolerance,
+					       cairo_antialias_t   antialias)
+{
+    cairo_ps_surface_t *surface = cairo_container_of (clipper,
+						      cairo_ps_surface_t,
+						      clipper);
+    cairo_output_stream_t *stream = surface->stream;
+    cairo_status_t status;
+
+    assert (surface->paginated_mode != CAIRO_PAGINATED_MODE_ANALYZE);
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (stream,
+				 "%% _cairo_ps_surface_intersect_clip_path\n");
+#endif
+
+    if (path == NULL) {
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (stream, "Q q\n");
+
+	surface->current_pattern_is_solid_color = FALSE;
+	_cairo_pdf_operators_reset (&surface->pdf_operators);
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (_path_covers_bbox (surface, path))
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_pdf_operators_clip (&surface->pdf_operators,
+				      path,
+				      fill_rule);
+}
+
+/* PLRM specifies a tolerance of 5 points when matching page sizes */
+static cairo_bool_t
+_ps_page_dimension_equal (int a, int b)
+{
+    return (abs (a - b) < 5);
+}
+
+static const char *
+_cairo_ps_surface_get_page_media (cairo_ps_surface_t     *surface)
+{
+    int width, height, i;
+    char buf[50];
+    cairo_page_media_t *page;
+    const char *page_name;
+
+    width = _cairo_lround (surface->width);
+    height = _cairo_lround (surface->height);
+
+    /* search previously used page sizes */
+    cairo_list_foreach_entry (page, cairo_page_media_t, &surface->document_media, link) {
+	if (_ps_page_dimension_equal (width, page->width) &&
+	    _ps_page_dimension_equal (height, page->height))
+	    return page->name;
+    }
+
+    /* search list of standard page sizes */
+    page_name = NULL;
+    for (i = 0; i < ARRAY_LENGTH (_cairo_page_standard_media); i++) {
+	if (_ps_page_dimension_equal (width, _cairo_page_standard_media[i].width) &&
+	    _ps_page_dimension_equal (height, _cairo_page_standard_media[i].height))
+	{
+	    page_name = _cairo_page_standard_media[i].name;
+	    width = _cairo_page_standard_media[i].width;
+	    height = _cairo_page_standard_media[i].height;
+	    break;
+	}
+    }
+
+    page = _cairo_malloc (sizeof (cairo_page_media_t));
+    if (unlikely (page == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    if (page_name) {
+	page->name = strdup (page_name);
+    } else {
+	snprintf (buf, sizeof (buf), "%dx%dmm",
+		  (int) _cairo_lround (surface->width * 25.4/72),
+		  (int) _cairo_lround (surface->height * 25.4/72));
+	page->name = strdup (buf);
+    }
+
+    if (unlikely (page->name == NULL)) {
+	free (page);
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    page->width = width;
+    page->height = height;
+    cairo_list_add_tail (&page->link, &surface->document_media);
+
+    return page->name;
+}
+
+static cairo_surface_t *
+_cairo_ps_surface_create_for_stream_internal (cairo_output_stream_t *stream,
+					      double		     width,
+					      double		     height)
+{
+    cairo_status_t status, status_ignored;
+    cairo_ps_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_ps_surface_t));
+    if (unlikely (surface == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP;
+    }
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_ps_surface_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 TRUE); /* is_vector */
+
+    surface->final_stream = stream;
+
+    surface->tmpfile = tmpfile ();
+    if (surface->tmpfile == NULL) {
+	switch (errno) {
+	case ENOMEM:
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    break;
+	default:
+	    status = _cairo_error (CAIRO_STATUS_TEMP_FILE_ERROR);
+	    break;
+	}
+	goto CLEANUP_SURFACE;
+    }
+
+    surface->stream = _cairo_output_stream_create_for_file (surface->tmpfile);
+    status = _cairo_output_stream_get_status (surface->stream);
+    if (unlikely (status))
+	goto CLEANUP_OUTPUT_STREAM;
+
+    surface->font_subsets = _cairo_scaled_font_subsets_create_simple ();
+    if (unlikely (surface->font_subsets == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_OUTPUT_STREAM;
+    }
+
+    _cairo_scaled_font_subsets_enable_latin_subset (surface->font_subsets, TRUE);
+    surface->has_creation_date = FALSE;
+    surface->eps = FALSE;
+    surface->ps_level = CAIRO_PS_LEVEL_3;
+    surface->ps_level_used = CAIRO_PS_LEVEL_2;
+    surface->width  = width;
+    surface->height = height;
+    cairo_matrix_init (&surface->cairo_to_ps, 1, 0, 0, 1, 0, 0);
+    surface->surface_extents.x = 0;
+    surface->surface_extents.y = 0;
+    surface->surface_extents.width  = ceil (surface->width);
+    surface->surface_extents.height = ceil (surface->height);
+    surface->surface_bounded = TRUE;
+    surface->paginated_mode = CAIRO_PAGINATED_MODE_ANALYZE;
+    surface->force_fallbacks = FALSE;
+    surface->content = CAIRO_CONTENT_COLOR_ALPHA;
+    surface->current_pattern_is_solid_color = FALSE;
+    surface->document_bbox_p1.x = 0;
+    surface->document_bbox_p1.y = 0;
+    surface->document_bbox_p2.x = 0;
+    surface->document_bbox_p2.y = 0;
+    surface->total_form_size = 0;
+    surface->contains_eps = FALSE;
+    surface->paint_proc = FALSE;
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_ps_surface_clipper_intersect_clip_path);
+
+    _cairo_pdf_operators_init (&surface->pdf_operators,
+			       surface->stream,
+			       &surface->cairo_to_ps,
+			       surface->font_subsets,
+			       TRUE);
+    surface->num_pages = 0;
+
+    cairo_list_init (&surface->document_media);
+    _cairo_array_init (&surface->dsc_header_comments, sizeof (char *));
+    _cairo_array_init (&surface->dsc_setup_comments, sizeof (char *));
+    _cairo_array_init (&surface->dsc_page_setup_comments, sizeof (char *));
+    _cairo_array_init (&surface->recording_surf_stack, sizeof (unsigned int));
+
+    surface->num_forms = 0;
+    surface->forms = _cairo_hash_table_create (_cairo_ps_form_equal);
+    if (unlikely (surface->forms == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_FONT_SUBSETS;
+    }
+
+    surface->dsc_comment_target = &surface->dsc_header_comments;
+
+    surface->paginated_surface = _cairo_paginated_surface_create (
+	                                   &surface->base,
+					   CAIRO_CONTENT_COLOR_ALPHA,
+					   &cairo_ps_surface_paginated_backend);
+    status = surface->paginated_surface->status;
+    if (status == CAIRO_STATUS_SUCCESS) {
+	/* paginated keeps the only reference to surface now, drop ours */
+	cairo_surface_destroy (&surface->base);
+	return surface->paginated_surface;
+    }
+
+ CLEANUP_FONT_SUBSETS:
+    _cairo_scaled_font_subsets_destroy (surface->font_subsets);
+ CLEANUP_OUTPUT_STREAM:
+    status_ignored = _cairo_output_stream_destroy (surface->stream);
+    fclose (surface->tmpfile);
+ CLEANUP_SURFACE:
+    free (surface);
+ CLEANUP:
+    /* destroy stream on behalf of caller */
+    status_ignored = _cairo_output_stream_destroy (stream);
+
+    return _cairo_surface_create_in_error (status);
+}
+
+/**
+ * cairo_ps_surface_create:
+ * @filename: a filename for the PS output (must be writable), %NULL may be
+ *            used to specify no output. This will generate a PS surface that
+ *            may be queried and used as a source, without generating a
+ *            temporary file.
+ * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
+ * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
+ *
+ * Creates a PostScript surface of the specified size in points to be
+ * written to @filename. See cairo_ps_surface_create_for_stream() for
+ * a more flexible mechanism for handling the PostScript output than
+ * simply writing it to a named file.
+ *
+ * Note that the size of individual pages of the PostScript output can
+ * vary. See cairo_ps_surface_set_size().
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_ps_surface_create (const char		*filename,
+			 double			 width_in_points,
+			 double			 height_in_points)
+{
+    cairo_output_stream_t *stream;
+
+    stream = _cairo_output_stream_create_for_filename (filename);
+    if (_cairo_output_stream_get_status (stream))
+	return _cairo_surface_create_in_error (_cairo_output_stream_destroy (stream));
+
+    return _cairo_ps_surface_create_for_stream_internal (stream,
+							 width_in_points,
+							 height_in_points);
+}
+
+/**
+ * cairo_ps_surface_create_for_stream:
+ * @write_func: a #cairo_write_func_t to accept the output data, may be %NULL
+ *              to indicate a no-op @write_func. With a no-op @write_func,
+ *              the surface may be queried or used as a source without
+ *              generating any temporary files.
+ * @closure: the closure argument for @write_func
+ * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
+ * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
+ *
+ * Creates a PostScript surface of the specified size in points to be
+ * written incrementally to the stream represented by @write_func and
+ * @closure. See cairo_ps_surface_create() for a more convenient way
+ * to simply direct the PostScript output to a named file.
+ *
+ * Note that the size of individual pages of the PostScript
+ * output can vary. See cairo_ps_surface_set_size().
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_ps_surface_create_for_stream (cairo_write_func_t	write_func,
+				    void	       *closure,
+				    double		width_in_points,
+				    double		height_in_points)
+{
+    cairo_output_stream_t *stream;
+
+    stream = _cairo_output_stream_create (write_func, NULL, closure);
+    if (_cairo_output_stream_get_status (stream))
+	return _cairo_surface_create_in_error (_cairo_output_stream_destroy (stream));
+
+    return _cairo_ps_surface_create_for_stream_internal (stream,
+							 width_in_points,
+							 height_in_points);
+}
+
+static cairo_bool_t
+_cairo_surface_is_ps (cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_ps_surface_backend;
+}
+
+/* If the abstract_surface is a paginated surface, and that paginated
+ * surface's target is a ps_surface, then set ps_surface to that
+ * target. Otherwise return FALSE.
+ */
+static cairo_bool_t
+_extract_ps_surface (cairo_surface_t	 *surface,
+                     cairo_bool_t         set_error_on_failure,
+		     cairo_ps_surface_t **ps_surface)
+{
+    cairo_surface_t *target;
+
+    if (surface->status)
+	return FALSE;
+    if (surface->finished) {
+        if (set_error_on_failure)
+	    _cairo_surface_set_error (surface,
+				      _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return FALSE;
+    }
+
+    if (! _cairo_surface_is_paginated (surface)) {
+        if (set_error_on_failure)
+	    _cairo_surface_set_error (surface,
+				      _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return FALSE;
+    }
+
+    target = _cairo_paginated_surface_get_target (surface);
+    if (target->status) {
+        if (set_error_on_failure)
+	    _cairo_surface_set_error (surface, target->status);
+	return FALSE;
+    }
+    if (target->finished) {
+        if (set_error_on_failure)
+	    _cairo_surface_set_error (surface,
+				      _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return FALSE;
+    }
+
+    if (! _cairo_surface_is_ps (target)) {
+        if (set_error_on_failure)
+	    _cairo_surface_set_error (surface,
+				      _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return FALSE;
+    }
+
+    *ps_surface = (cairo_ps_surface_t *) target;
+    return TRUE;
+}
+
+/**
+ * cairo_ps_surface_restrict_to_level:
+ * @surface: a PostScript #cairo_surface_t
+ * @level: PostScript level
+ *
+ * Restricts the generated PostSript file to @level. See
+ * cairo_ps_get_levels() for a list of available level values that
+ * can be used here.
+ *
+ * This function should only be called before any drawing operations
+ * have been performed on the given surface. The simplest way to do
+ * this is to call this function immediately after creating the
+ * surface.
+ *
+ * Since: 1.6
+ **/
+void
+cairo_ps_surface_restrict_to_level (cairo_surface_t  *surface,
+                                    cairo_ps_level_t  level)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+
+    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
+	return;
+
+    if (level < CAIRO_PS_LEVEL_LAST)
+	ps_surface->ps_level = level;
+}
+
+/**
+ * cairo_ps_get_levels:
+ * @levels: supported level list
+ * @num_levels: list length
+ *
+ * Used to retrieve the list of supported levels. See
+ * cairo_ps_surface_restrict_to_level().
+ *
+ * Since: 1.6
+ **/
+void
+cairo_ps_get_levels (cairo_ps_level_t const	**levels,
+                     int                     	 *num_levels)
+{
+    if (levels != NULL)
+	*levels = _cairo_ps_levels;
+
+    if (num_levels != NULL)
+	*num_levels = CAIRO_PS_LEVEL_LAST;
+}
+
+/**
+ * cairo_ps_level_to_string:
+ * @level: a level id
+ *
+ * Get the string representation of the given @level id. This function
+ * will return %NULL if @level id isn't valid. See cairo_ps_get_levels()
+ * for a way to get the list of valid level ids.
+ *
+ * Return value: the string associated to given level.
+ *
+ * Since: 1.6
+ **/
+const char *
+cairo_ps_level_to_string (cairo_ps_level_t level)
+{
+    if (level >= CAIRO_PS_LEVEL_LAST)
+	return NULL;
+
+    return _cairo_ps_level_strings[level];
+}
+
+/**
+ * cairo_ps_surface_set_eps:
+ * @surface: a PostScript #cairo_surface_t
+ * @eps: %TRUE to output EPS format PostScript
+ *
+ * If @eps is %TRUE, the PostScript surface will output Encapsulated
+ * PostScript.
+ *
+ * This function should only be called before any drawing operations
+ * have been performed on the current page. The simplest way to do
+ * this is to call this function immediately after creating the
+ * surface. An Encapsulated PostScript file should never contain more
+ * than one page.
+ *
+ * Since: 1.6
+ **/
+void
+cairo_ps_surface_set_eps (cairo_surface_t	*surface,
+			  cairo_bool_t           eps)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+
+    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
+	return;
+
+    ps_surface->eps = eps;
+}
+
+/**
+ * cairo_ps_surface_get_eps:
+ * @surface: a PostScript #cairo_surface_t
+ *
+ * Check whether the PostScript surface will output Encapsulated PostScript.
+ *
+ * Return value: %TRUE if the surface will output Encapsulated PostScript.
+ *
+ * Since: 1.6
+ **/
+cairo_public cairo_bool_t
+cairo_ps_surface_get_eps (cairo_surface_t	*surface)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+
+    if (! _extract_ps_surface (surface, FALSE, &ps_surface))
+	return FALSE;
+
+    return ps_surface->eps;
+}
+
+/**
+ * cairo_ps_surface_set_size:
+ * @surface: a PostScript #cairo_surface_t
+ * @width_in_points: new surface width, in points (1 point == 1/72.0 inch)
+ * @height_in_points: new surface height, in points (1 point == 1/72.0 inch)
+ *
+ * Changes the size of a PostScript surface for the current (and
+ * subsequent) pages.
+ *
+ * This function should only be called before any drawing operations
+ * have been performed on the current page. The simplest way to do
+ * this is to call this function immediately after creating the
+ * surface or immediately after completing a page with either
+ * cairo_show_page() or cairo_copy_page().
+ *
+ * Since: 1.2
+ **/
+void
+cairo_ps_surface_set_size (cairo_surface_t	*surface,
+			   double		 width_in_points,
+			   double		 height_in_points)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+    cairo_status_t status;
+
+    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
+	return;
+
+    ps_surface->width = width_in_points;
+    ps_surface->height = height_in_points;
+    cairo_matrix_init (&ps_surface->cairo_to_ps, 1, 0, 0, 1, 0, 0);
+    ps_surface->surface_extents.x = 0;
+    ps_surface->surface_extents.y = 0;
+    ps_surface->surface_extents.width  = ceil (ps_surface->width);
+    ps_surface->surface_extents.height = ceil (ps_surface->height);
+    _cairo_pdf_operators_set_cairo_to_pdf_matrix (&ps_surface->pdf_operators,
+						  &ps_surface->cairo_to_ps);
+    status = _cairo_paginated_surface_set_size (ps_surface->paginated_surface,
+						width_in_points,
+						height_in_points);
+    if (status)
+	status = _cairo_surface_set_error (surface, status);
+}
+
+/**
+ * cairo_ps_surface_dsc_comment:
+ * @surface: a PostScript #cairo_surface_t
+ * @comment: a comment string to be emitted into the PostScript output
+ *
+ * Emit a comment into the PostScript output for the given surface.
+ *
+ * The comment is expected to conform to the PostScript Language
+ * Document Structuring Conventions (DSC). Please see that manual for
+ * details on the available comments and their meanings. In
+ * particular, the \%\%IncludeFeature comment allows a
+ * device-independent means of controlling printer device features. So
+ * the PostScript Printer Description Files Specification will also be
+ * a useful reference.
+ *
+ * The comment string must begin with a percent character (\%) and the
+ * total length of the string (including any initial percent
+ * characters) must not exceed 255 characters. Violating either of
+ * these conditions will place @surface into an error state. But
+ * beyond these two conditions, this function will not enforce
+ * conformance of the comment with any particular specification.
+ *
+ * The comment string should not have a trailing newline.
+ *
+ * The DSC specifies different sections in which particular comments
+ * can appear. This function provides for comments to be emitted
+ * within three sections: the header, the Setup section, and the
+ * PageSetup section.  Comments appearing in the first two sections
+ * apply to the entire document while comments in the BeginPageSetup
+ * section apply only to a single page.
+ *
+ * For comments to appear in the header section, this function should
+ * be called after the surface is created, but before a call to
+ * cairo_ps_surface_dsc_begin_setup().
+ *
+ * For comments to appear in the Setup section, this function should
+ * be called after a call to cairo_ps_surface_dsc_begin_setup() but
+ * before a call to cairo_ps_surface_dsc_begin_page_setup().
+ *
+ * For comments to appear in the PageSetup section, this function
+ * should be called after a call to
+ * cairo_ps_surface_dsc_begin_page_setup().
+ *
+ * Note that it is only necessary to call
+ * cairo_ps_surface_dsc_begin_page_setup() for the first page of any
+ * surface. After a call to cairo_show_page() or cairo_copy_page()
+ * comments are unambiguously directed to the PageSetup section of the
+ * current page. But it doesn't hurt to call this function at the
+ * beginning of every page as that consistency may make the calling
+ * code simpler.
+ *
+ * As a final note, cairo automatically generates several comments on
+ * its own. As such, applications must not manually generate any of
+ * the following comments:
+ *
+ * Header section: \%!PS-Adobe-3.0, \%\%Creator, \%\%CreationDate, \%\%Pages,
+ * \%\%BoundingBox, \%\%DocumentData, \%\%LanguageLevel, \%\%EndComments.
+ *
+ * Setup section: \%\%BeginSetup, \%\%EndSetup
+ *
+ * PageSetup section: \%\%BeginPageSetup, \%\%PageBoundingBox, \%\%EndPageSetup.
+ *
+ * Other sections: \%\%BeginProlog, \%\%EndProlog, \%\%Page, \%\%Trailer, \%\%EOF
+ *
+ * Here is an example sequence showing how this function might be used:
+ *
+ * <informalexample><programlisting>
+ * cairo_surface_t *surface = cairo_ps_surface_create (filename, width, height);
+ * ...
+ * cairo_ps_surface_dsc_comment (surface, "%%Title: My excellent document");
+ * cairo_ps_surface_dsc_comment (surface, "%%Copyright: Copyright (C) 2006 Cairo Lover")
+ * ...
+ * cairo_ps_surface_dsc_begin_setup (surface);
+ * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *MediaColor White");
+ * ...
+ * cairo_ps_surface_dsc_begin_page_setup (surface);
+ * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *PageSize A3");
+ * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *InputSlot LargeCapacity");
+ * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *MediaType Glossy");
+ * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *MediaColor Blue");
+ * ... draw to first page here ..
+ * cairo_show_page (cr);
+ * ...
+ * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *PageSize A5");
+ * ...
+ * </programlisting></informalexample>
+ *
+ * Since: 1.2
+ **/
+void
+cairo_ps_surface_dsc_comment (cairo_surface_t	*surface,
+			      const char	*comment)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+    cairo_status_t status;
+    char *comment_copy;
+
+    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
+	return;
+
+    /* A couple of sanity checks on the comment value. */
+    if (comment == NULL) {
+	status = _cairo_surface_set_error (surface, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    if (comment[0] != '%' || strlen (comment) > 255) {
+	status = _cairo_surface_set_error (surface, CAIRO_STATUS_INVALID_DSC_COMMENT);
+	return;
+    }
+
+    /* Then, copy the comment and store it in the appropriate array. */
+    comment_copy = strdup (comment);
+    if (unlikely (comment_copy == NULL)) {
+	status = _cairo_surface_set_error (surface, CAIRO_STATUS_NO_MEMORY);
+	return;
+    }
+
+    status = _cairo_array_append (ps_surface->dsc_comment_target, &comment_copy);
+    if (unlikely (status)) {
+	free (comment_copy);
+	status = _cairo_surface_set_error (surface, status);
+	return;
+    }
+}
+
+/**
+ * cairo_ps_surface_dsc_begin_setup:
+ * @surface: a PostScript #cairo_surface_t
+ *
+ * This function indicates that subsequent calls to
+ * cairo_ps_surface_dsc_comment() should direct comments to the Setup
+ * section of the PostScript output.
+ *
+ * This function should be called at most once per surface, and must
+ * be called before any call to cairo_ps_surface_dsc_begin_page_setup()
+ * and before any drawing is performed to the surface.
+ *
+ * See cairo_ps_surface_dsc_comment() for more details.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_ps_surface_dsc_begin_setup (cairo_surface_t *surface)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+
+    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
+	return;
+
+    if (ps_surface->dsc_comment_target == &ps_surface->dsc_header_comments)
+	ps_surface->dsc_comment_target = &ps_surface->dsc_setup_comments;
+}
+
+/**
+ * cairo_ps_surface_dsc_begin_page_setup:
+ * @surface: a PostScript #cairo_surface_t
+ *
+ * This function indicates that subsequent calls to
+ * cairo_ps_surface_dsc_comment() should direct comments to the
+ * PageSetup section of the PostScript output.
+ *
+ * This function call is only needed for the first page of a
+ * surface. It should be called after any call to
+ * cairo_ps_surface_dsc_begin_setup() and before any drawing is
+ * performed to the surface.
+ *
+ * See cairo_ps_surface_dsc_comment() for more details.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_ps_surface_dsc_begin_page_setup (cairo_surface_t *surface)
+{
+    cairo_ps_surface_t *ps_surface = NULL;
+
+    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
+	return;
+
+    if (ps_surface->dsc_comment_target == &ps_surface->dsc_header_comments ||
+	ps_surface->dsc_comment_target == &ps_surface->dsc_setup_comments)
+    {
+	ps_surface->dsc_comment_target = &ps_surface->dsc_page_setup_comments;
+    }
+}
+
+static cairo_status_t
+_cairo_ps_surface_finish (void *abstract_surface)
+{
+    cairo_status_t status, status2;
+    cairo_ps_surface_t *surface = abstract_surface;
+    int i, num_comments;
+    char **comments;
+
+    status = surface->base.status;
+    if (unlikely (status))
+	goto CLEANUP;
+
+    _cairo_ps_surface_emit_header (surface);
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginSetup\n");
+
+    status = _cairo_ps_surface_emit_font_subsets (surface);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    status = _cairo_ps_surface_emit_forms (surface);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndSetup\n");
+
+    status = _cairo_ps_surface_emit_body (surface);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    _cairo_ps_surface_emit_footer (surface);
+
+CLEANUP:
+    _cairo_hash_table_foreach (surface->forms,
+			       _cairo_ps_form_pluck,
+			       surface->forms);
+    _cairo_hash_table_destroy (surface->forms);
+    _cairo_scaled_font_subsets_destroy (surface->font_subsets);
+
+    status2 = _cairo_output_stream_destroy (surface->stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    fclose (surface->tmpfile);
+
+    status2 = _cairo_output_stream_destroy (surface->final_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    while (! cairo_list_is_empty (&surface->document_media)) {
+        cairo_page_media_t *page;
+
+        page = cairo_list_first_entry (&surface->document_media,
+                                       cairo_page_media_t,
+                                       link);
+        cairo_list_del (&page->link);
+	free (page->name);
+	free (page);
+    }
+
+    num_comments = _cairo_array_num_elements (&surface->dsc_header_comments);
+    comments = _cairo_array_index (&surface->dsc_header_comments, 0);
+    for (i = 0; i < num_comments; i++)
+	free (comments[i]);
+    _cairo_array_fini (&surface->dsc_header_comments);
+
+    num_comments = _cairo_array_num_elements (&surface->dsc_setup_comments);
+    comments = _cairo_array_index (&surface->dsc_setup_comments, 0);
+    for (i = 0; i < num_comments; i++)
+	free (comments[i]);
+    _cairo_array_fini (&surface->dsc_setup_comments);
+
+    num_comments = _cairo_array_num_elements (&surface->dsc_page_setup_comments);
+    comments = _cairo_array_index (&surface->dsc_page_setup_comments, 0);
+    for (i = 0; i < num_comments; i++)
+	free (comments[i]);
+    _cairo_array_fini (&surface->dsc_page_setup_comments);
+
+    _cairo_array_fini (&surface->recording_surf_stack);
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_start_page (void *abstract_surface)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+
+    /* Increment before print so page numbers start at 1. */
+    surface->num_pages++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_show_page (void *abstract_surface)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    if (surface->clipper.clip != NULL)
+	_cairo_surface_clipper_reset (&surface->clipper);
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->stream,
+				 "Q Q\n"
+				 "showpage\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+color_is_gray (double red, double green, double blue)
+{
+    const double epsilon = 0.00001;
+
+    return (fabs (red - green) < epsilon &&
+	    fabs (red - blue) < epsilon);
+}
+
+/**
+ * _cairo_ps_surface_acquire_source_surface_from_pattern:
+ * @surface: [in] the ps surface
+ * @pattern: [in] A #cairo_pattern_t of type SURFACE or RASTER_SOURCE to use
+ *                as the source
+ * @extents: [in] extents of the operation that is using this source
+ * @src_surface_extents: [out] return source surface extents
+ * @src_surface_bounded: [out] return TRUE if source surface is bounded
+ * @src_op_extents: [out] return operation extents in source space
+ * @source_surface: [out] returns surface of type image surface or recording surface
+ * @x_offset: [out] return x offset of surface
+ * @y_offset: [out] return y offset of surface
+ *
+ * Acquire source surface or raster source pattern.
+ **/
+static cairo_status_t
+_cairo_ps_surface_acquire_source_surface_from_pattern (
+    cairo_ps_surface_t           *surface,
+    const cairo_pattern_t        *pattern,
+    const cairo_rectangle_int_t  *extents,
+    cairo_rectangle_int_t        *src_surface_extents,
+    cairo_bool_t                 *src_surface_bounded,
+    cairo_rectangle_int_t        *src_op_extents,
+    cairo_surface_t             **source_surface,
+    double                       *x_offset,
+    double                       *y_offset)
+{
+    cairo_status_t status;
+    cairo_box_t bbox;
+
+    *x_offset = 0;
+    *y_offset = 0;
+
+    /* get the operation extents in pattern space */
+    _cairo_box_from_rectangle (&bbox, extents);
+    _cairo_matrix_transform_bounding_box_fixed (&pattern->matrix, &bbox, NULL);
+    _cairo_box_round_to_rectangle (&bbox, src_op_extents);
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
+	cairo_surface_t *surf;
+
+	surf = _cairo_raster_source_pattern_acquire (pattern, &surface->base, src_op_extents);
+	if (!surf)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	*src_surface_bounded = _cairo_surface_get_extents (surf, src_surface_extents);
+	cairo_surface_get_device_offset (surf, x_offset, y_offset);
+	*source_surface = surf;
+    } else if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_t *surf = NULL;
+
+	*source_surface = ((cairo_surface_pattern_t *) pattern)->surface;
+	surf = *source_surface;
+	*src_surface_bounded = _cairo_surface_get_extents (surf, src_surface_extents);
+	if (surf->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	    if (_cairo_surface_is_snapshot (surf))
+		surf = _cairo_surface_snapshot_get_target (surf);
+
+	    if (surf->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+		cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) surf;
+
+		*src_surface_extents = sub->extents;
+		*src_surface_bounded = TRUE;
+		*x_offset = -sub->extents.x;
+		*y_offset = -sub->extents.y;
+	    }
+
+	    cairo_surface_destroy (surf);
+	} else if (surf->type != CAIRO_SURFACE_TYPE_IMAGE) {
+	    cairo_image_surface_t *image;
+	    void *image_extra;
+
+	    status = _cairo_surface_acquire_source_image (surf, &image, &image_extra);
+	    if (unlikely (status))
+		return status;
+
+	    *src_surface_bounded = _cairo_surface_get_extents (&image->base, src_surface_extents);
+	    _cairo_surface_release_source_image (surf, image, image_extra);
+	}
+    } else {
+	ASSERT_NOT_REACHED;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_ps_surface_release_source_surface_from_pattern (cairo_ps_surface_t           *surface,
+						       const cairo_pattern_t        *pattern,
+						       cairo_surface_t              *source_surface)
+{
+    if  (pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	_cairo_raster_source_pattern_release (pattern, source_surface);
+}
+
+/**
+ * _cairo_ps_surface_create_padded_image_from_image:
+ * @surface: the ps surface
+ * @source: The source image
+ * @extents: extents of the operation that is using this source
+ * @image: returns the padded image or NULL if padding not required to fill @extents
+ * @image_extents: returns extents of padded image. These extents in are in source image space.
+ *
+ * Creates a padded image if the source image does not fill the extents.
+ **/
+static cairo_status_t
+_cairo_ps_surface_create_padded_image_from_image (cairo_ps_surface_t           *surface,
+						  cairo_image_surface_t        *source,
+						  const cairo_matrix_t         *source_matrix,
+						  const cairo_rectangle_int_t  *extents,
+						  cairo_image_surface_t       **image,
+						  cairo_rectangle_int_t        *image_extents)
+{
+    cairo_box_t box;
+    cairo_rectangle_int_t rect;
+    cairo_surface_t	   *pad_image;
+    cairo_surface_pattern_t pad_pattern;
+    int w, h;
+    cairo_int_status_t      status;
+
+    /* get the operation extents in pattern space */
+    _cairo_box_from_rectangle (&box, extents);
+    _cairo_matrix_transform_bounding_box_fixed (source_matrix, &box, NULL);
+    _cairo_box_round_to_rectangle (&box, &rect);
+
+    /* Check if image needs padding to fill extents. */
+    w = source->width;
+    h = source->height;
+    if (_cairo_fixed_integer_ceil(box.p1.x) < 0 ||
+	_cairo_fixed_integer_ceil(box.p1.y) < 0 ||
+	_cairo_fixed_integer_floor(box.p2.y) > w ||
+	_cairo_fixed_integer_floor(box.p2.y) > h)
+    {
+	pad_image = _cairo_image_surface_create_with_content (source->base.content,
+							      rect.width,
+							      rect.height);
+	if (pad_image->status)
+	    return pad_image->status;
+
+	_cairo_pattern_init_for_surface (&pad_pattern, &source->base);
+	cairo_matrix_init_translate (&pad_pattern.base.matrix, rect.x, rect.y);
+	pad_pattern.base.extend = CAIRO_EXTEND_PAD;
+	status = _cairo_surface_paint (pad_image,
+				       CAIRO_OPERATOR_SOURCE,
+				       &pad_pattern.base,
+				       NULL);
+	_cairo_pattern_fini (&pad_pattern.base);
+	*image = (cairo_image_surface_t *) pad_image;
+	image_extents->x = rect.x;
+	image_extents->y = rect.y;
+	image_extents->width = rect.width;
+	image_extents->height = rect.height;
+    } else {
+	*image = NULL;
+	status = CAIRO_STATUS_SUCCESS;
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_analyze_surface_pattern_transparency (cairo_ps_surface_t            *surface,
+							const cairo_pattern_t         *pattern,
+							const cairo_rectangle_int_t   *extents)
+{
+    cairo_rectangle_int_t src_surface_extents;
+    cairo_bool_t src_surface_bounded;
+    cairo_rectangle_int_t src_op_extents;
+    cairo_surface_t *source_surface;
+    double x_offset, y_offset;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_int_status_t status;
+    cairo_image_transparency_t transparency;
+
+    status = _cairo_ps_surface_acquire_source_surface_from_pattern (surface,
+								    pattern,
+								    extents,
+								    &src_surface_extents,
+								    &src_surface_bounded,
+								    &src_op_extents,
+								    &source_surface,
+								    &x_offset,
+								    &y_offset);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_acquire_source_image (source_surface, &image, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    if (image->base.status)
+	return image->base.status;
+
+    transparency = _cairo_image_analyze_transparency (image);
+    switch (transparency) {
+    case CAIRO_IMAGE_IS_OPAQUE:
+	status = CAIRO_STATUS_SUCCESS;
+	break;
+
+    case CAIRO_IMAGE_HAS_BILEVEL_ALPHA:
+	if (surface->ps_level == CAIRO_PS_LEVEL_2) {
+	    status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+	} else {
+	    surface->ps_level_used = CAIRO_PS_LEVEL_3;
+	    status = CAIRO_STATUS_SUCCESS;
+	}
+	break;
+
+    case CAIRO_IMAGE_HAS_ALPHA:
+	status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+	break;
+
+    case CAIRO_IMAGE_UNKNOWN:
+	ASSERT_NOT_REACHED;
+    }
+
+    _cairo_surface_release_source_image (source_surface, image, image_extra);
+    _cairo_ps_surface_release_source_surface_from_pattern (surface, pattern, source_surface);
+
+    return status;
+}
+
+static cairo_bool_t
+surface_pattern_supported (const cairo_surface_pattern_t *pattern)
+{
+    if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+	return TRUE;
+
+    if (pattern->surface->backend->acquire_source_image == NULL)
+	return FALSE;
+
+    /* Does an ALPHA-only source surface even make sense? Maybe, but I
+     * don't think it's worth the extra code to support it. */
+
+/* XXX: Need to write this function here...
+    content = pattern->surface->content;
+    if (content == CAIRO_CONTENT_ALPHA)
+	return FALSE;
+*/
+
+    return TRUE;
+}
+
+static cairo_bool_t
+_gradient_pattern_supported (cairo_ps_surface_t    *surface,
+			     const cairo_pattern_t *pattern)
+{
+    double min_alpha, max_alpha;
+
+    if (surface->ps_level == CAIRO_PS_LEVEL_2)
+	return FALSE;
+
+    /* Alpha gradients are only supported (by flattening the alpha)
+     * if there is no variation in the alpha across the gradient. */
+    _cairo_pattern_alpha_range (pattern, &min_alpha, &max_alpha);
+    if (min_alpha != max_alpha)
+	return FALSE;
+
+    surface->ps_level_used = CAIRO_PS_LEVEL_3;
+
+    return TRUE;
+}
+
+static cairo_bool_t
+pattern_supported (cairo_ps_surface_t *surface, const cairo_pattern_t *pattern)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return TRUE;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _gradient_pattern_supported (surface, pattern);
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return surface_pattern_supported ((cairo_surface_pattern_t *) pattern);
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return TRUE;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+mask_supported (cairo_ps_surface_t *surface,
+		const cairo_pattern_t *mask,
+		const cairo_rectangle_int_t *extents)
+{
+    if (surface->ps_level == CAIRO_PS_LEVEL_2)
+	return FALSE;
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) mask;
+	if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
+	    /* check if mask if opaque or bilevel alpha */
+	    if (_cairo_ps_surface_analyze_surface_pattern_transparency (surface, mask, extents) == CAIRO_INT_STATUS_SUCCESS) {
+		surface->ps_level_used = CAIRO_PS_LEVEL_3;
+		return TRUE;
+	    }
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_analyze_operation (cairo_ps_surface_t    *surface,
+				     cairo_operator_t       op,
+				     const cairo_pattern_t       *pattern,
+				     const cairo_pattern_t       *mask,
+				     const cairo_rectangle_int_t *extents)
+{
+    double min_alpha;
+
+    if (surface->force_fallbacks &&
+	surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (! pattern_supported (surface, pattern))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! (op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_OVER))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Mask is only supported when the mask is an image with opaque or bilevel alpha. */
+    if (mask && !mask_supported (surface, mask, extents))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
+
+	if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	    if (pattern->extend == CAIRO_EXTEND_PAD) {
+		cairo_box_t box;
+		cairo_rectangle_int_t rect;
+		cairo_rectangle_int_t rec_extents;
+
+		/* get the operation extents in pattern space */
+		_cairo_box_from_rectangle (&box, extents);
+		_cairo_matrix_transform_bounding_box_fixed (&pattern->matrix, &box, NULL);
+		_cairo_box_round_to_rectangle (&box, &rect);
+
+		/* Check if surface needs padding to fill extents */
+		if (_cairo_surface_get_extents (surface_pattern->surface, &rec_extents)) {
+		    if (_cairo_fixed_integer_ceil(box.p1.x) < rec_extents.x ||
+			_cairo_fixed_integer_ceil(box.p1.y) < rec_extents.y ||
+			_cairo_fixed_integer_floor(box.p2.y) > rec_extents.x + rec_extents.width ||
+			_cairo_fixed_integer_floor(box.p2.y) > rec_extents.y + rec_extents.height)
+		    {
+			return CAIRO_INT_STATUS_UNSUPPORTED;
+		    }
+		}
+	    }
+	    return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
+	}
+    }
+
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	if (mask)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	else
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* CAIRO_OPERATOR_OVER is only supported for opaque patterns. If
+     * the pattern contains transparency, we return
+     * CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY to the analysis
+     * surface. If the analysis surface determines that there is
+     * anything drawn under this operation, a fallback image will be
+     * used. Otherwise the operation will be replayed during the
+     * render stage and we blend the transparency into the white
+     * background to convert the pattern to opaque.
+     */
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE || pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return _cairo_ps_surface_analyze_surface_pattern_transparency (surface, pattern, extents);
+
+    /* Patterns whose drawn part is opaque are directly supported;
+       those whose drawn part is partially transparent can be
+       supported by flattening the alpha. */
+    _cairo_pattern_alpha_range (pattern, &min_alpha, NULL);
+    if (CAIRO_ALPHA_IS_OPAQUE (min_alpha))
+	return CAIRO_STATUS_SUCCESS;
+
+    return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+}
+
+static cairo_bool_t
+_cairo_ps_surface_operation_supported (cairo_ps_surface_t    *surface,
+				       cairo_operator_t       op,
+				       const cairo_pattern_t       *pattern,
+				       const cairo_pattern_t       *mask,
+				       const cairo_rectangle_int_t *extents)
+{
+    return _cairo_ps_surface_analyze_operation (surface, op, pattern, mask, extents) != CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+/* The "standard" implementation limit for PostScript string sizes is
+ * 65535 characters (see PostScript Language Reference, Appendix
+ * B).
+ */
+#define STRING_ARRAY_MAX_STRING_SIZE 65535
+#define STRING_ARRAY_MAX_COLUMN	     72
+
+typedef struct _string_array_stream {
+    cairo_output_stream_t base;
+    cairo_output_stream_t *output;
+    int column;
+    int string_size;
+    int tuple_count;
+    cairo_bool_t use_strings;
+} string_array_stream_t;
+
+static cairo_status_t
+_base85_string_wrap_stream_write (cairo_output_stream_t *base,
+				  const unsigned char   *data,
+				  unsigned int	   length)
+{
+    string_array_stream_t *stream = (string_array_stream_t *) base;
+    unsigned char c;
+
+    if (length == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    while (length--) {
+	if (stream->column == 0) {
+	    if (stream->use_strings) {
+		_cairo_output_stream_printf (stream->output, "<~");
+		stream->column = 2;
+	    } else {
+		_cairo_output_stream_printf (stream->output, " ");
+		stream->column = 1;
+	    }
+	}
+
+	c = *data++;
+	_cairo_output_stream_write (stream->output, &c, 1);
+	stream->column++;
+
+	/* Base85 encodes each 4 byte tuple with a 5 ASCII character
+	 * tuple, except for 'z' with represents 4 zero bytes. We need
+	 * to keep track of the string length after decoding.
+	 */
+	if (c == 'z') {
+	    stream->string_size += 4;
+	    stream->tuple_count = 0;
+	} else {
+	    if (++stream->tuple_count == 5) {
+		stream->string_size += 4;
+		stream->tuple_count = 0;
+	    }
+	}
+
+	/* Split string at tuple boundary when there is not enough
+	 * space for another tuple */
+	if (stream->use_strings &&
+	    stream->tuple_count == 0 &&
+	    stream->string_size > STRING_ARRAY_MAX_STRING_SIZE - 4)
+	{
+	    _cairo_output_stream_printf (stream->output, "~>\n");
+	    stream->string_size = 0;
+	    stream->column = 0;
+	}
+	if (stream->column >= STRING_ARRAY_MAX_COLUMN) {
+	    _cairo_output_stream_printf (stream->output, "\n ");
+	    stream->column = 1;
+	}
+    }
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+static cairo_status_t
+_base85_string_wrap_stream_close (cairo_output_stream_t *base)
+{
+    string_array_stream_t *stream = (string_array_stream_t *) base;
+
+    if (!stream->use_strings || stream->string_size != 0)
+	_cairo_output_stream_printf (stream->output, "~>");
+
+    return _cairo_output_stream_get_status (stream->output);
+}
+
+/* A _base85_strings_stream wraps an existing output stream. It takes
+ * base85 encoded data and splits it into strings each limited to
+ * STRING_ARRAY_MAX_STRING_SIZE bytes when decoded. Each string is
+ * enclosed in "<~" and "~>".
+
+ * The string array stream is also careful to wrap the output within
+ * STRING_ARRAY_MAX_COLUMN columns. Wrapped lines start with a space
+ * in case an encoded line starts with %% which could be interpreted
+ * as a DSC comment.
+ */
+static cairo_output_stream_t *
+_base85_strings_stream_create (cairo_output_stream_t *output)
+{
+    string_array_stream_t *stream;
+
+    stream = _cairo_malloc (sizeof (string_array_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       _base85_string_wrap_stream_write,
+			       NULL,
+			       _base85_string_wrap_stream_close);
+    stream->output = output;
+    stream->column = 0;
+    stream->string_size = 0;
+    stream->tuple_count = 0;
+    stream->use_strings = TRUE;
+
+    return &stream->base;
+}
+
+/* A base85_wrap_stream wraps an existing output stream. It wraps the
+ * output within STRING_ARRAY_MAX_COLUMN columns. A base85 EOD "~>" is
+ * appended to the end. Wrapped lines start with a space in case an
+ * encoded line starts with %% which could be interpreted as a DSC
+ * comment.
+ */
+static cairo_output_stream_t *
+_base85_wrap_stream_create (cairo_output_stream_t *output)
+{
+    string_array_stream_t *stream;
+
+    stream = _cairo_malloc (sizeof (string_array_stream_t));
+    if (unlikely (stream == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_output_stream_t *) &_cairo_output_stream_nil;
+    }
+
+    _cairo_output_stream_init (&stream->base,
+			       _base85_string_wrap_stream_write,
+			       NULL,
+			       _base85_string_wrap_stream_close);
+    stream->output = output;
+    stream->column = 0;
+    stream->string_size = 0;
+    stream->tuple_count = 0;
+    stream->use_strings = FALSE;
+
+    return &stream->base;
+}
+
+
+/* PS Output - this section handles output of the parts of the recording
+ * surface we can render natively in PS. */
+
+static cairo_status_t
+_cairo_ps_surface_flatten_image_transparency (cairo_ps_surface_t    *surface,
+					      cairo_image_surface_t *image,
+					      cairo_image_surface_t **opaque_image)
+{
+    cairo_surface_t *opaque;
+    cairo_surface_pattern_t pattern;
+    cairo_status_t status;
+
+    opaque = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+					 image->width,
+					 image->height);
+    if (unlikely (opaque->status))
+	return opaque->status;
+
+    if (surface->content == CAIRO_CONTENT_COLOR_ALPHA) {
+	status = _cairo_surface_paint (opaque,
+				       CAIRO_OPERATOR_SOURCE,
+				       &_cairo_pattern_white.base,
+				       NULL);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (opaque);
+	    return status;
+	}
+    }
+
+    _cairo_pattern_init_for_surface (&pattern, &image->base);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    status = _cairo_surface_paint (opaque, CAIRO_OPERATOR_OVER, &pattern.base, NULL);
+    _cairo_pattern_fini (&pattern.base);
+    if (unlikely (status)) {
+	cairo_surface_destroy (opaque);
+	return status;
+    }
+
+    *opaque_image = (cairo_image_surface_t *) opaque;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_base85_string (cairo_ps_surface_t    *surface,
+				      const unsigned char   *data,
+				      unsigned long	     length,
+				      cairo_ps_compress_t    compress,
+				      cairo_bool_t           use_strings)
+{
+    cairo_output_stream_t *base85_stream, *string_array_stream, *deflate_stream;
+    unsigned char *data_compressed;
+    unsigned long data_compressed_size;
+    cairo_status_t status, status2;
+
+    if (use_strings)
+	string_array_stream = _base85_strings_stream_create (surface->stream);
+    else
+	string_array_stream = _base85_wrap_stream_create (surface->stream);
+
+    status = _cairo_output_stream_get_status (string_array_stream);
+    if (unlikely (status))
+	return _cairo_output_stream_destroy (string_array_stream);
+
+    base85_stream = _cairo_base85_stream_create (string_array_stream);
+    status = _cairo_output_stream_get_status (base85_stream);
+    if (unlikely (status)) {
+	status2 = _cairo_output_stream_destroy (string_array_stream);
+	return _cairo_output_stream_destroy (base85_stream);
+    }
+
+    switch (compress) {
+	case CAIRO_PS_COMPRESS_NONE:
+	    _cairo_output_stream_write (base85_stream, data, length);
+	    break;
+
+	case CAIRO_PS_COMPRESS_LZW:
+	    /* XXX: Should fix cairo-lzw to provide a stream-based interface
+	     * instead. */
+	    data_compressed_size = length;
+	    data_compressed = _cairo_lzw_compress ((unsigned char*)data, &data_compressed_size);
+	    if (unlikely (data_compressed == NULL)) {
+		status = _cairo_output_stream_destroy (string_array_stream);
+		status = _cairo_output_stream_destroy (base85_stream);
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+	    _cairo_output_stream_write (base85_stream, data_compressed, data_compressed_size);
+	    free (data_compressed);
+	    break;
+
+	case CAIRO_PS_COMPRESS_DEFLATE:
+	    deflate_stream = _cairo_deflate_stream_create (base85_stream);
+	    if (_cairo_output_stream_get_status (deflate_stream)) {
+		return _cairo_output_stream_destroy (deflate_stream);
+	    }
+	    _cairo_output_stream_write (deflate_stream, data, length);
+	    status = _cairo_output_stream_destroy (deflate_stream);
+	    if (unlikely (status)) {
+		status2 = _cairo_output_stream_destroy (string_array_stream);
+		status2 = _cairo_output_stream_destroy (base85_stream);
+		return _cairo_output_stream_destroy (deflate_stream);
+	    }
+	    break;
+    }
+    status = _cairo_output_stream_destroy (base85_stream);
+    status2 = _cairo_output_stream_destroy (string_array_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+static const char *
+get_interpolate (cairo_filter_t	filter)
+{
+    const char *interpolate;
+
+    switch (filter) {
+	default:
+	case CAIRO_FILTER_GOOD:
+	case CAIRO_FILTER_BEST:
+	case CAIRO_FILTER_BILINEAR:
+	    interpolate = "true";
+	    break;
+	case CAIRO_FILTER_FAST:
+	case CAIRO_FILTER_NEAREST:
+	case CAIRO_FILTER_GAUSSIAN:
+	    interpolate = "false";
+	break;
+    }
+
+    return interpolate;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_image (cairo_ps_surface_t          *surface,
+			      cairo_emit_surface_mode_t    mode,
+			      cairo_emit_surface_params_t *params)
+{
+    cairo_status_t status;
+    unsigned char *data;
+    unsigned long data_size;
+    cairo_image_surface_t *ps_image;
+    int x, y, i, a;
+    cairo_image_transparency_t transparency;
+    cairo_bool_t use_mask;
+    uint32_t *pixel32;
+    uint8_t *pixel8;
+    int bit;
+    cairo_image_color_t color;
+    const char *interpolate;
+    cairo_ps_compress_t compress;
+    const char *compress_filter;
+    cairo_image_surface_t *image_surf;
+    cairo_image_surface_t *image;
+    void *image_extra;
+
+    if (params->src_surface->status)
+	return params->src_surface->status;
+
+    status = _cairo_surface_acquire_source_image (params->src_surface, &image_surf, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    image  = image_surf;
+    if (image->format != CAIRO_FORMAT_RGB24 &&
+	image->format != CAIRO_FORMAT_ARGB32 &&
+	image->format != CAIRO_FORMAT_A8 &&
+	image->format != CAIRO_FORMAT_A1)
+    {
+	cairo_surface_t *surf;
+	cairo_surface_pattern_t pattern;
+
+	surf = _cairo_image_surface_create_with_content (image->base.content,
+							 image->width,
+							 image->height);
+	image = (cairo_image_surface_t *) surf;
+	if (surf->status) {
+	    status = surf->status;
+	    goto bail0;
+	}
+
+	_cairo_pattern_init_for_surface (&pattern, &image->base);
+	status = _cairo_surface_paint (surf,
+				       CAIRO_OPERATOR_SOURCE, &pattern.base,
+				       NULL);
+        _cairo_pattern_fini (&pattern.base);
+        if (unlikely (status))
+            goto bail0;
+    }
+    ps_image = image;
+    interpolate = get_interpolate (params->filter);
+
+    if (params->stencil_mask) {
+	use_mask = FALSE;
+	color = CAIRO_IMAGE_IS_MONOCHROME;
+	transparency = CAIRO_IMAGE_HAS_BILEVEL_ALPHA;
+    } else {
+	transparency = _cairo_image_analyze_transparency (image);
+
+	/* PostScript can not represent the alpha channel, so we blend the
+	   current image over a white (or black for CONTENT_COLOR
+	   surfaces) RGB surface to eliminate it. */
+
+	if (params->op == CAIRO_OPERATOR_SOURCE ||
+	    transparency == CAIRO_IMAGE_HAS_ALPHA ||
+	    (transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA &&
+	     surface->ps_level == CAIRO_PS_LEVEL_2))
+	{
+	    status = _cairo_ps_surface_flatten_image_transparency (surface,
+								   image,
+								   &ps_image);
+	    if (unlikely (status))
+		return status;
+
+	    use_mask = FALSE;
+	} else if (transparency == CAIRO_IMAGE_IS_OPAQUE) {
+	    use_mask = FALSE;
+	} else { /* transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA */
+	    use_mask = TRUE;
+	}
+
+	color = _cairo_image_analyze_color (ps_image);
+    }
+
+    /* Type 2 (mask and image interleaved) has the mask and image
+     * samples interleaved by row.  The mask row is first, one bit per
+     * pixel with (bit 7 first). The row is padded to byte
+     * boundaries. The image data is 3 bytes per pixel RGB format. */
+    switch (color) {
+    default:
+    case CAIRO_IMAGE_UNKNOWN_COLOR:
+	ASSERT_NOT_REACHED;
+    case CAIRO_IMAGE_IS_COLOR:
+	data_size = ps_image->width * 3;
+	break;
+    case CAIRO_IMAGE_IS_GRAYSCALE:
+	data_size = ps_image->width;
+	break;
+    case CAIRO_IMAGE_IS_MONOCHROME:
+	data_size = (ps_image->width + 7)/8;
+	break;
+    }
+    if (use_mask)
+	data_size += (ps_image->width + 7)/8;
+    data_size *= ps_image->height;
+    data = _cairo_malloc (data_size);
+    if (unlikely (data == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto bail1;
+    }
+
+    i = 0;
+    for (y = 0; y < ps_image->height; y++) {
+	if (params->stencil_mask || use_mask) {
+	    /* mask row */
+	    if (ps_image->format == CAIRO_FORMAT_A1) {
+		pixel8 = (uint8_t *) (ps_image->data + y * ps_image->stride);
+
+		for (x = 0; x < (ps_image->width + 7) / 8; x++, pixel8++) {
+		    a = *pixel8;
+		    a = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (a);
+		    data[i++] = a;
+		}
+	    } else {
+		pixel8 = (uint8_t *) (ps_image->data + y * ps_image->stride);
+		pixel32 = (uint32_t *) (ps_image->data + y * ps_image->stride);
+		bit = 7;
+		for (x = 0; x < ps_image->width; x++) {
+		    if (ps_image->format == CAIRO_FORMAT_ARGB32) {
+			a = (*pixel32 & 0xff000000) >> 24;
+			pixel32++;
+		    } else {
+			a = *pixel8;
+			pixel8++;
+		    }
+
+		    if (transparency == CAIRO_IMAGE_HAS_ALPHA) {
+			data[i++] = a;
+		    } else { /* transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA or CAIRO_IMAGE_IS_OPAQUE */
+			if (bit == 7)
+			    data[i] = 0;
+			if (a != 0)
+			    data[i] |= (1 << bit);
+			bit--;
+			if (bit < 0) {
+			    bit = 7;
+			    i++;
+			}
+		    }
+		}
+		if (bit != 7)
+		    i++;
+	    }
+	}
+	if (params->stencil_mask)
+	    continue;
+
+	/* image row*/
+	pixel32 = (uint32_t *) (ps_image->data + y * ps_image->stride);
+	bit = 7;
+	for (x = 0; x < ps_image->width; x++, pixel32++) {
+	    int r, g, b;
+
+	    if (ps_image->format == CAIRO_FORMAT_ARGB32) {
+		/* At this point ARGB32 images are either opaque or
+		 * bilevel alpha so we don't need to unpremultiply. */
+		if (((*pixel32 & 0xff000000) >> 24) == 0) {
+		    r = g = b = 0;
+		} else {
+		    r = (*pixel32 & 0x00ff0000) >> 16;
+		    g = (*pixel32 & 0x0000ff00) >>  8;
+		    b = (*pixel32 & 0x000000ff) >>  0;
+		}
+	    } else if (ps_image->format == CAIRO_FORMAT_RGB24) {
+		r = (*pixel32 & 0x00ff0000) >> 16;
+		g = (*pixel32 & 0x0000ff00) >>  8;
+		b = (*pixel32 & 0x000000ff) >>  0;
+	    } else {
+		r = g = b = 0;
+	    }
+
+	    switch (color) {
+		case CAIRO_IMAGE_IS_COLOR:
+		case CAIRO_IMAGE_UNKNOWN_COLOR:
+		    data[i++] = r;
+		    data[i++] = g;
+		    data[i++] = b;
+		    break;
+
+		case CAIRO_IMAGE_IS_GRAYSCALE:
+		    data[i++] = r;
+		    break;
+
+		case CAIRO_IMAGE_IS_MONOCHROME:
+		    if (bit == 7)
+			data[i] = 0;
+		    if (r != 0)
+			data[i] |= (1 << bit);
+		    bit--;
+		    if (bit < 0) {
+			bit = 7;
+			i++;
+		    }
+		    break;
+	    }
+	}
+	if (bit != 7)
+	    i++;
+    }
+
+    if (surface->ps_level == CAIRO_PS_LEVEL_2) {
+	compress = CAIRO_PS_COMPRESS_LZW;
+	compress_filter = "LZWDecode";
+    } else {
+	compress = CAIRO_PS_COMPRESS_DEFLATE;
+	compress_filter = "FlateDecode";
+	surface->ps_level_used = CAIRO_PS_LEVEL_3;
+    }
+
+    if (surface->paint_proc) {
+	/* Emit the image data as a base85-encoded string which will
+	 * be used as the data source for the image operator later. */
+	_cairo_output_stream_printf (surface->stream,
+				     "/CairoData [\n");
+
+	status = _cairo_ps_surface_emit_base85_string (surface,
+						       data,
+						       data_size,
+						       compress,
+						       TRUE);
+	if (unlikely (status))
+	    goto bail2;
+
+	_cairo_output_stream_printf (surface->stream,
+				     "] def\n");
+	_cairo_output_stream_printf (surface->stream,
+				     "/CairoDataIndex 0 def\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "/cairo_ascii85_file currentfile /ASCII85Decode filter def\n");
+    }
+
+    if (use_mask) {
+	_cairo_output_stream_printf (surface->stream,
+				     "%s setcolorspace\n"
+				     "<<\n"
+				     "  /ImageType 3\n"
+				     "  /InterleaveType 2\n"
+				     "  /DataDict <<\n"
+				     "    /ImageType 1\n"
+				     "    /Width %d\n"
+				     "    /Height %d\n"
+				     "    /Interpolate %s\n"
+				     "    /BitsPerComponent %d\n"
+				     "    /Decode [ %s ]\n",
+				     color == CAIRO_IMAGE_IS_COLOR ? "/DeviceRGB" : "/DeviceGray",
+				     ps_image->width,
+				     ps_image->height,
+				     interpolate,
+				     color == CAIRO_IMAGE_IS_MONOCHROME ? 1 : 8,
+				     color == CAIRO_IMAGE_IS_COLOR ? "0 1 0 1 0 1" : "0 1");
+
+	if (surface->paint_proc) {
+	    _cairo_output_stream_printf (surface->stream,
+					 "    /DataSource { cairo_data_source } /%s filter\n",
+					 compress_filter);
+	} else {
+	    _cairo_output_stream_printf (surface->stream,
+					 "    /DataSource cairo_ascii85_file /%s filter\n",
+					 compress_filter);
+	}
+
+	_cairo_output_stream_printf (surface->stream,
+				     "    /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
+				     "  >>\n"
+				     "  /MaskDict <<\n"
+				     "    /ImageType 1\n"
+				     "    /Width %d\n"
+				     "    /Height %d\n"
+				     "    /Interpolate %s\n"
+				     "    /BitsPerComponent 1\n"
+				     "    /Decode [ 1 0 ]\n"
+				     "    /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
+				     "  >>\n"
+				     ">>\n"
+				     "image\n",
+				     ps_image->width,
+				     -ps_image->height,
+				     ps_image->height,
+				     ps_image->width,
+				     ps_image->height,
+				     interpolate,
+				     ps_image->width,
+				     -ps_image->height,
+				     ps_image->height);
+    } else {
+	const char *decode;
+
+	if (!params->stencil_mask) {
+	    _cairo_output_stream_printf (surface->stream,
+					 "%s setcolorspace\n",
+					 color == CAIRO_IMAGE_IS_COLOR ? "/DeviceRGB" : "/DeviceGray");
+	}
+	if (params->stencil_mask)
+	    decode = "1 0";
+	else if (color == CAIRO_IMAGE_IS_COLOR)
+	    decode = "0 1 0 1 0 1";
+	else
+	    decode ="0 1";
+
+	_cairo_output_stream_printf (surface->stream,
+				     "<<\n"
+				     "  /ImageType 1\n"
+				     "  /Width %d\n"
+				     "  /Height %d\n"
+				     "  /Interpolate %s\n"
+				     "  /BitsPerComponent %d\n"
+				     "  /Decode [ %s ]\n",
+				     ps_image->width,
+				     ps_image->height,
+				     interpolate,
+				     color == CAIRO_IMAGE_IS_MONOCHROME ? 1 : 8,
+				     decode);
+	if (surface->paint_proc) {
+	    _cairo_output_stream_printf (surface->stream,
+					 "  /DataSource { cairo_data_source } /%s filter\n",
+					 compress_filter);
+	} else {
+	    _cairo_output_stream_printf (surface->stream,
+					 "  /DataSource cairo_ascii85_file /%s filter\n",
+					 compress_filter);
+	}
+
+	_cairo_output_stream_printf (surface->stream,
+				     "  /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
+				     ">>\n"
+				     "%s%s\n",
+				     ps_image->width,
+				     -ps_image->height,
+				     ps_image->height,
+				     surface->paint_proc ? "" : "cairo_",
+				     params->stencil_mask ? "imagemask" : "image");
+    }
+
+    if (!surface->paint_proc) {
+	/* Emit the image data as a base85-encoded string which will
+	 * be used as the data source for the image operator. */
+	status = _cairo_ps_surface_emit_base85_string (surface,
+						       data,
+						       data_size,
+						       compress,
+						       FALSE);
+	_cairo_output_stream_printf (surface->stream, "\n");
+    } else {
+	status = CAIRO_STATUS_SUCCESS;
+    }
+
+bail2:
+    free (data);
+
+bail1:
+    if (!use_mask && ps_image != image)
+	cairo_surface_destroy (&ps_image->base);
+
+bail0:
+    if (image != image_surf)
+	cairo_surface_destroy (&image->base);
+
+    _cairo_surface_release_source_image (params->src_surface, image_surf, image_extra);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_emit_jpeg_image (cairo_ps_surface_t          *surface,
+				   cairo_emit_surface_mode_t    mode,
+				   cairo_emit_surface_params_t *params)
+{
+    cairo_status_t status;
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_image_info_t info;
+    const char *colorspace;
+    const char *decode;
+
+    if (unlikely (params->src_surface->status))
+	return params->src_surface->status;
+
+    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_JPEG,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jpeg_info (&info, mime_data, mime_data_length);
+    if (unlikely (status))
+	return status;
+
+    switch (info.num_components) {
+	case 1:
+	    colorspace = "/DeviceGray";
+	    decode = "0 1";
+	    break;
+	case 3:
+	    colorspace = "/DeviceRGB";
+	    decode =  "0 1 0 1 0 1";
+	    break;
+	case 4:
+	    colorspace = "/DeviceCMYK";
+	    decode =  "0 1 0 1 0 1 0 1";
+	    break;
+	default:
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* At this point we know emitting jpeg will succeed. */
+    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
+	params->is_image = TRUE;
+	params->approx_size = mime_data_length;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (surface->paint_proc) {
+	/* Emit the image data as a base85-encoded string which will
+	 * be used as the data source for the image operator later. */
+	_cairo_output_stream_printf (surface->stream,
+				     "/CairoData [\n");
+
+	status = _cairo_ps_surface_emit_base85_string (surface,
+						       mime_data,
+						       mime_data_length,
+						       CAIRO_PS_COMPRESS_NONE,
+						       TRUE);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->stream,
+				     "] def\n");
+	_cairo_output_stream_printf (surface->stream,
+				     "/CairoDataIndex 0 def\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "/cairo_ascii85_file currentfile /ASCII85Decode filter def\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "%s setcolorspace\n"
+				 "<<\n"
+				 "  /ImageType 1\n"
+				 "  /Width %d\n"
+				 "  /Height %d\n"
+				 "  /BitsPerComponent %d\n"
+				 "  /Interpolate %s\n"
+				 "  /Decode [ %s ]\n",
+				 colorspace,
+				 info.width,
+				 info.height,
+				 info.bits_per_component,
+				 get_interpolate (params->filter),
+                                 decode);
+
+    if (surface->paint_proc) {
+	_cairo_output_stream_printf (surface->stream,
+				     "  /DataSource { cairo_data_source } /DCTDecode filter\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "  /DataSource cairo_ascii85_file /DCTDecode filter\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "  /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
+				 ">>\n"
+				 "%simage\n",
+				 info.width,
+				 -info.height,
+				 info.height,
+				 surface->paint_proc ? "" : "cairo_");
+
+    if (!surface->paint_proc) {
+	/* Emit the image data as a base85-encoded string which will
+	 * be used as the data source for the image operator. */
+	status = _cairo_ps_surface_emit_base85_string (surface,
+						       mime_data,
+						       mime_data_length,
+						       CAIRO_PS_COMPRESS_NONE,
+						       FALSE);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_emit_ccitt_image (cairo_ps_surface_t          *surface,
+				    cairo_emit_surface_mode_t    mode,
+				    cairo_emit_surface_params_t *params)
+{
+    cairo_status_t status;
+    const unsigned char *ccitt_data;
+    unsigned long ccitt_data_len;
+    const unsigned char *ccitt_params_data;
+    unsigned long ccitt_params_data_len;
+    char *ccitt_params_string;
+    cairo_ccitt_params_t ccitt_params;
+
+    if (unlikely (params->src_surface->status))
+	return params->src_surface->status;
+
+    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_CCITT_FAX,
+				 &ccitt_data, &ccitt_data_len);
+    if (ccitt_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
+				 &ccitt_params_data, &ccitt_params_data_len);
+    if (ccitt_params_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* ensure params_string is null terminated */
+    ccitt_params_string = malloc (ccitt_params_data_len + 1);
+    memcpy (ccitt_params_string, ccitt_params_data, ccitt_params_data_len);
+    ccitt_params_string[ccitt_params_data_len] = 0;
+    status = _cairo_tag_parse_ccitt_params (ccitt_params_string, &ccitt_params);
+    if (unlikely(status))
+	return status;
+
+    free (ccitt_params_string);
+
+    if (ccitt_params.columns <= 0 || ccitt_params.rows <= 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* At this point we know emitting ccitt will succeed. */
+    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
+	params->is_image = TRUE;
+	params->approx_size = ccitt_data_len;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (surface->paint_proc) {
+	/* Emit the image data as a base85-encoded string which will
+	 * be used as the data source for the image operator later. */
+	_cairo_output_stream_printf (surface->stream,
+				     "/CairoData [\n");
+
+	status = _cairo_ps_surface_emit_base85_string (surface,
+						       ccitt_data,
+						       ccitt_data_len,
+						       CAIRO_PS_COMPRESS_NONE,
+						       TRUE);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->stream,
+				     "] def\n");
+	_cairo_output_stream_printf (surface->stream,
+				     "/CairoDataIndex 0 def\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "/cairo_ascii85_file currentfile /ASCII85Decode filter def\n");
+    }
+
+    if (!params->stencil_mask) {
+	_cairo_output_stream_printf (surface->stream,
+				     "/DeviceGray setcolorspace\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "<<\n"
+				 "  /ImageType 1\n"
+				 "  /Width %d\n"
+				 "  /Height %d\n"
+				 "  /BitsPerComponent 1\n"
+				 "  /Interpolate %s\n"
+				 "  /Decode [ 0 1 ]\n",
+				 ccitt_params.columns,
+				 ccitt_params.rows,
+				 get_interpolate (params->filter));
+
+    if (surface->paint_proc) {
+	_cairo_output_stream_printf (surface->stream,
+				     "  /DataSource { cairo_data_source }\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "  /DataSource cairo_ascii85_file\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "  << /Columns %d /Rows %d /K %d\n",
+				 ccitt_params.columns,
+				 ccitt_params.rows,
+				 ccitt_params.k);
+
+    if (ccitt_params.end_of_line)
+	_cairo_output_stream_printf (surface->stream, "     /EndOfLine true\n");
+
+    if (ccitt_params.encoded_byte_align)
+	_cairo_output_stream_printf (surface->stream, "     /EncodedByteAlign true\n");
+
+    if (!ccitt_params.end_of_block)
+	_cairo_output_stream_printf (surface->stream, "     /EndOfBlock false\n");
+
+    if (ccitt_params.black_is_1)
+	_cairo_output_stream_printf (surface->stream, "     /BlackIs1 true\n");
+
+    if (ccitt_params.damaged_rows_before_error > 0) {
+	_cairo_output_stream_printf (surface->stream,
+				     "     /DamagedRowsBeforeError %d\n",
+				     ccitt_params.damaged_rows_before_error);
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "  >> /CCITTFaxDecode filter\n");
+
+    _cairo_output_stream_printf (surface->stream,
+				 "  /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
+				 ">>\n"
+				 "%s%s\n",
+				 ccitt_params.columns,
+				 -ccitt_params.rows,
+				 ccitt_params.rows,
+				 surface->paint_proc ? "" : "cairo_",
+				 params->stencil_mask ? "imagemask" : "image");
+
+    if (!surface->paint_proc) {
+	/* Emit the image data as a base85-encoded string which will
+	 * be used as the data source for the image operator. */
+	status = _cairo_ps_surface_emit_base85_string (surface,
+						       ccitt_data,
+						       ccitt_data_len,
+						       CAIRO_PS_COMPRESS_NONE,
+						       FALSE);
+    }
+
+    return status;
+}
+
+/* The '|' character is not used in PS (including ASCII85).  We can
+ * speed up the search by first searching for the first char before
+ * comparing strings.
+ */
+#define SUBFILE_FILTER_EOD "|EOD|"
+
+/* Count number of non overlapping occurrences of SUBFILE_FILTER_EOD in data. */
+static int
+count_eod_strings (const unsigned char *data, unsigned long data_len)
+{
+    const unsigned char *p = data;
+    const unsigned char *end;
+    int first_char, len, count;
+    const char *eod_str = SUBFILE_FILTER_EOD;
+
+    first_char = eod_str[0];
+    len = strlen (eod_str);
+    p = data;
+    end = data + data_len - len + 1;
+    count = 0;
+    while (p < end) {
+	p = memchr (p, first_char, end - p);
+	if (!p)
+	    break;
+
+	if (memcmp (p, eod_str, len) == 0) {
+	    count++;
+	    p += len;
+	}
+    }
+
+    return count;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_eps (cairo_ps_surface_t          *surface,
+			    cairo_emit_surface_mode_t    mode,
+			    cairo_emit_surface_params_t *params)
+{
+    cairo_status_t status;
+    const unsigned char *eps_data = NULL;
+    unsigned long eps_data_len;
+    const unsigned char *eps_params_string = NULL;
+    unsigned long eps_params_string_len;
+    char *params_string = NULL;
+    cairo_eps_params_t eps_params;
+    cairo_matrix_t mat;
+    double eps_width, eps_height;
+
+    if (unlikely (params->src_surface->status))
+	return params->src_surface->status;
+
+    /* We only embed EPS with level 3 as we may use ReusableStreamDecode and we
+     * don't know what level the EPS file requires. */
+    if (surface->ps_level == CAIRO_PS_LEVEL_2)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_EPS,
+				 &eps_data, &eps_data_len);
+    if (eps_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_EPS_PARAMS,
+				 &eps_params_string, &eps_params_string_len);
+    if (eps_params_string == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* ensure params_string is null terminated */
+    params_string = malloc (eps_params_string_len + 1);
+    memcpy (params_string, eps_params_string, eps_params_string_len);
+    params_string[eps_params_string_len] = 0;
+    status = _cairo_tag_parse_eps_params (params_string, &eps_params);
+    if (unlikely(status))
+	return status;
+
+    /* At this point we know emitting EPS will succeed. */
+    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
+	params->is_image = FALSE;
+	params->approx_size = eps_data_len;
+	surface->contains_eps = TRUE;
+
+	/* Find number of occurrences of SUBFILE_FILTER_EOD in the EPS data.
+	 * We will need it before emitting the data if a ReusableStream is used.
+         */
+	params->eod_count = count_eod_strings (eps_data, eps_data_len);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    surface->ps_level_used = CAIRO_PS_LEVEL_3;
+    _cairo_output_stream_printf (surface->stream, "cairo_eps_begin\n");
+
+    eps_width = eps_params.bbox.p2.x - eps_params.bbox.p1.x;
+    eps_height = eps_params.bbox.p2.y - eps_params.bbox.p1.y;
+    cairo_matrix_init_translate (&mat,
+				 params->src_surface_extents->x,
+				 params->src_surface_extents->y);
+    cairo_matrix_scale (&mat,
+			params->src_surface_extents->width/eps_width,
+			params->src_surface_extents->height/eps_height);
+    cairo_matrix_scale (&mat, 1, -1);
+    cairo_matrix_translate (&mat, -eps_params.bbox.p1.x, -eps_params.bbox.p2.y);
+
+    if (! _cairo_matrix_is_identity (&mat)) {
+	_cairo_output_stream_printf (surface->stream, "[ ");
+	_cairo_output_stream_print_matrix (surface->stream, &mat);
+	_cairo_output_stream_printf (surface->stream, " ] concat\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "%f %f %f %f rectclip\n",
+				 eps_params.bbox.p1.x,
+				 eps_params.bbox.p1.y,
+				 eps_width,
+				 eps_height);
+
+    _cairo_output_stream_write (surface->stream, eps_data, eps_data_len);
+    _cairo_output_stream_printf (surface->stream, "\ncairo_eps_end\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_recording_surface (cairo_ps_surface_t          *surface,
+					  cairo_surface_t             *recording_surface,
+					  const cairo_rectangle_int_t *recording_extents,
+					  cairo_bool_t                 subsurface)
+{
+    double old_width, old_height;
+    cairo_rectangle_int_t old_surface_extents;
+    cairo_bool_t old_surface_bounded;
+    cairo_matrix_t old_cairo_to_ps;
+    cairo_content_t old_content;
+    cairo_surface_clipper_t old_clipper;
+    cairo_int_status_t status;
+    cairo_surface_t *free_me = NULL;
+    unsigned int id;
+    int i, recording_surf_stack_size;
+
+    /* Prevent infinite recursion if the recording_surface references a recording
+     * currently being emitted */
+    recording_surf_stack_size = _cairo_array_num_elements (&surface->recording_surf_stack);
+    for (i = 0; i < recording_surf_stack_size; i++) {
+	_cairo_array_copy_element (&surface->recording_surf_stack, i, &id);
+	if (id == recording_surface->unique_id)
+	    return CAIRO_STATUS_SUCCESS;
+    }
+    id = recording_surface->unique_id;
+    status = _cairo_array_append (&surface->recording_surf_stack, &id);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_surface_is_snapshot (recording_surface))
+	free_me = recording_surface = _cairo_surface_snapshot_get_target (recording_surface);
+
+    old_content = surface->content;
+    old_width = surface->width;
+    old_height = surface->height;
+    old_surface_extents = surface->surface_extents;
+    old_surface_bounded = surface->surface_bounded;
+    old_cairo_to_ps = surface->cairo_to_ps;
+    old_clipper = surface->clipper;
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_ps_surface_clipper_intersect_clip_path);
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->stream,
+				 "%% _cairo_ps_surface_emit_recording_surface"
+				 " x: %d, y: %d, w: %d, h: %d subsurface: %d\n",
+				 recording_extents->x, recording_extents->y,
+				 recording_extents->width, recording_extents->height,
+				 subsurface);
+#endif
+
+    surface->width = recording_extents->width;
+    surface->height = recording_extents->height;
+    surface->surface_extents = *recording_extents;
+    surface->current_pattern_is_solid_color = FALSE;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+    cairo_matrix_init (&surface->cairo_to_ps, 1, 0, 0, 1, 0, 0);
+    _cairo_pdf_operators_set_cairo_to_pdf_matrix (&surface->pdf_operators,
+						  &surface->cairo_to_ps);
+    _cairo_output_stream_printf (surface->stream, "  q\n");
+
+    if (recording_surface->content == CAIRO_CONTENT_COLOR) {
+	surface->content = CAIRO_CONTENT_COLOR;
+	_cairo_output_stream_printf (surface->stream,
+				     "  0 g %d %d %d %d rectfill\n",
+				     recording_extents->x,
+				     recording_extents->y,
+				     recording_extents->width,
+				     recording_extents->height);
+    }
+
+    status = _cairo_recording_surface_replay_region (recording_surface,
+						     subsurface ? recording_extents : NULL,
+						     &surface->base,
+						     CAIRO_RECORDING_REGION_NATIVE);
+    assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->stream, "  Q\n");
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+    surface->clipper = old_clipper;
+    surface->content = old_content;
+    surface->width = old_width;
+    surface->height = old_height;
+    surface->surface_extents = old_surface_extents;
+    surface->surface_bounded = old_surface_bounded;
+    surface->current_pattern_is_solid_color = FALSE;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+    surface->cairo_to_ps = old_cairo_to_ps;
+
+    _cairo_pdf_operators_set_cairo_to_pdf_matrix (&surface->pdf_operators,
+						  &surface->cairo_to_ps);
+    cairo_surface_destroy (free_me);
+
+    _cairo_array_truncate (&surface->recording_surf_stack, recording_surf_stack_size);
+
+    return status;
+}
+
+static void
+_cairo_ps_surface_flatten_transparency (cairo_ps_surface_t	*surface,
+					const cairo_color_t	*color,
+					double			*red,
+					double			*green,
+					double			*blue)
+{
+    *red   = color->red;
+    *green = color->green;
+    *blue  = color->blue;
+
+    if (! CAIRO_COLOR_IS_OPAQUE (color)) {
+	*red   *= color->alpha;
+	*green *= color->alpha;
+	*blue  *= color->alpha;
+	if (surface->content == CAIRO_CONTENT_COLOR_ALPHA) {
+	    double one_minus_alpha = 1. - color->alpha;
+	    *red   += one_minus_alpha;
+	    *green += one_minus_alpha;
+	    *blue  += one_minus_alpha;
+	}
+    }
+}
+
+static void
+_cairo_ps_surface_emit_solid_pattern (cairo_ps_surface_t    *surface,
+				      cairo_solid_pattern_t *pattern)
+{
+    double red, green, blue;
+
+    _cairo_ps_surface_flatten_transparency (surface, &pattern->color, &red, &green, &blue);
+
+    if (color_is_gray (red, green, blue))
+	_cairo_output_stream_printf (surface->stream,
+				     "%f g\n",
+				     red);
+    else
+	_cairo_output_stream_printf (surface->stream,
+				     "%f %f %f rg\n",
+				     red, green, blue);
+}
+
+/*
+ * PS Forms are used for sources that have CAIRO_MIME_TYPE_UNIQUE_ID. They will be
+ * emitted once in the PS header and can be rendered with the 'execform' operator.
+ *
+ * This function tries adding the source the form hash table. If the source does not
+ * have CAIRO_MIME_TYPE_UNIQUE_ID, CAIRO_INT_STATUS_UNSUPPORTED is returned.
+
+ * @source: [in] the source for the form
+ * @params: [in] source parameters
+ * @test: [in] if TRUE, test if form will be used (excludes size check)
+ * @ps_form [out] the new or exisiting entry int the hash table.
+ *                image or recording.
+ */
+static cairo_int_status_t
+_cairo_ps_surface_use_form (cairo_ps_surface_t           *surface,
+			    cairo_emit_surface_params_t  *params,
+			    cairo_bool_t                  test,
+			    cairo_ps_form_t             **ps_form)
+{
+    cairo_ps_form_t source_key;
+    cairo_ps_form_t *source_entry;
+    unsigned char *unique_id = NULL;
+    unsigned long unique_id_length = 0;
+    cairo_status_t status;
+    long max_size;
+
+    if (params->op != CAIRO_OPERATOR_OVER || params->stencil_mask)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (params->src_surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_UNIQUE_ID,
+				 (const unsigned char **) &source_key.unique_id,
+				 &source_key.unique_id_length);
+    if (source_key.unique_id == NULL || source_key.unique_id_length == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (test)
+	return CAIRO_STATUS_SUCCESS;
+
+    source_key.filter = params->filter;
+    _cairo_ps_form_init_key (&source_key);
+    source_entry = _cairo_hash_table_lookup (surface->forms, &source_key.base);
+    if (source_entry) {
+	_cairo_rectangle_union (&source_entry->required_extents, params->src_op_extents);
+	*ps_form = source_entry;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (surface->ps_level == CAIRO_PS_LEVEL_3)
+	max_size = MAX_L3_FORM_DATA;
+    else
+	max_size = MAX_L3_FORM_DATA;
+
+    /* Don't add any more Forms if we exceed the form memory limit */
+    if (surface->total_form_size + params->approx_size > max_size)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    surface->total_form_size += params->approx_size > max_size;
+    unique_id = _cairo_malloc (source_key.unique_id_length);
+    if (unique_id == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    unique_id_length = source_key.unique_id_length;
+    memcpy (unique_id, source_key.unique_id, unique_id_length);
+
+    source_entry = calloc (sizeof (cairo_ps_form_t), 1);
+    if (source_entry == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail;
+    }
+
+    source_entry->unique_id_length = unique_id_length;
+    source_entry->unique_id = unique_id;
+    source_entry->id = surface->num_forms++;
+    source_entry->src_surface = cairo_surface_reference (params->src_surface);
+    source_entry->required_extents = *params->src_op_extents;
+    source_entry->filter = params->filter;
+    source_entry->is_image = params->is_image;
+    _cairo_ps_form_init_key (source_entry);
+    status = _cairo_hash_table_insert (surface->forms, &source_entry->base);
+    if (unlikely(status))
+	goto fail;
+
+    *ps_form = source_entry;
+    return CAIRO_STATUS_SUCCESS;
+
+  fail:
+    free (unique_id);
+    free (source_entry);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_emit_form (cairo_ps_surface_t          *surface,
+			     cairo_emit_surface_params_t *params,
+			     cairo_bool_t                 test)
+{
+    cairo_ps_form_t *ps_form = NULL;
+    cairo_status_t status;
+
+    status = _cairo_ps_surface_use_form (surface,
+					 params,
+					 test,
+					 &ps_form);
+    if (test || status)
+	return status;
+
+    /* _cairo_ps_form_emit will use Level 3 if permitted by ps_level */
+    if (surface->ps_level == CAIRO_PS_LEVEL_3)
+	surface->ps_level_used = CAIRO_PS_LEVEL_3;
+
+    _cairo_output_stream_printf (surface->stream,
+				 "/cairoform-%d /Form findresource execform\n",
+				 ps_form->id);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Emit a surface. This function has three modes.
+ *
+ * CAIRO_EMIT_SURFACE_ANALYZE: This will determine the surface type to
+ * be emitted and approximate size. is_image is set to TRUE if the
+ * emitted surface is an image surface (including mime images). This
+ * is used by the caller to setup the correct CTM. approx_size is set
+ * to the approximate size of the emitted surface and is used as an
+ * input by the emit mode.
+ *
+ * CAIRO_EMIT_SURFACE_EMIT: Emits the surface will be emitted. The
+ * approx_size and the surface unique id values are used to determine
+ * if a Form should be used. If a form is used, the exec form
+ * operation is emitted and the surface is added to the forms hash
+ * table.
+ *
+ * CAIRO_EMIT_SURFACE_EMIT_FORM: Emits the form definition for the surface.
+ *
+ * Usage is:
+ * 1) Setup input params and call with ANALYZE.
+ * 2) Setup CTM for surface and call with EMIT using same params struct.
+ * The EMIT_FORM mode is used when emitting the form definitions.
+ */
+static cairo_int_status_t
+_cairo_ps_surface_emit_surface (cairo_ps_surface_t          *surface,
+				cairo_emit_surface_mode_t    mode,
+				cairo_emit_surface_params_t *params)
+{
+    cairo_int_status_t status;
+    cairo_output_stream_t *old_stream = NULL;
+    cairo_bool_t use_form;
+
+    /* Try emitting as a form. Returns unsupported if the surface is
+     * deemed unsuitable for a form. */
+    use_form = FALSE;
+    if (mode == CAIRO_EMIT_SURFACE_ANALYZE || mode == CAIRO_EMIT_SURFACE_EMIT) {
+	status = _cairo_ps_surface_emit_form (surface,
+					      params,
+					      mode == CAIRO_EMIT_SURFACE_ANALYZE);
+	use_form = (status == CAIRO_INT_STATUS_SUCCESS);
+	if (status != CAIRO_INT_STATUS_SUCCESS && status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+
+	if (mode == CAIRO_EMIT_SURFACE_EMIT && status == CAIRO_INT_STATUS_SUCCESS)
+	    return status;
+    }
+
+    status = _cairo_ps_surface_emit_eps (surface, mode, params);
+    if (status == CAIRO_INT_STATUS_SUCCESS) {
+	params->is_image = FALSE;
+	goto surface_emitted;
+    }
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_ps_surface_emit_jpeg_image (surface, mode, params);
+    if (status == CAIRO_INT_STATUS_SUCCESS) {
+	params->is_image = TRUE;
+	goto surface_emitted;
+    }
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_ps_surface_emit_ccitt_image (surface, mode, params);
+    if (status == CAIRO_INT_STATUS_SUCCESS) {
+	params->is_image = TRUE;
+	goto surface_emitted;
+    }
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
+	/* Find size of image or recording surface by emitting to a memory stream */
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	old_stream = surface->stream;
+	surface->stream = _cairo_memory_stream_create ();
+	_cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->stream);
+    }
+
+    if (params->src_surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	params->is_image = FALSE;
+	if (params->src_surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) params->src_surface;
+	    status = _cairo_ps_surface_emit_recording_surface (surface,
+							       sub->target,
+							       &sub->extents,
+							       TRUE);
+	} else {
+	    status = _cairo_ps_surface_emit_recording_surface (surface,
+							       params->src_surface,
+							       params->src_op_extents,
+							       FALSE);
+	}
+    } else {
+	params->is_image = TRUE;
+	status = _cairo_ps_surface_emit_image (surface, mode, params);
+    }
+
+    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
+	unsigned char *data;
+	unsigned long length;
+
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_memory_stream_destroy (surface->stream, &data, &length);
+	free (data);
+	if (unlikely (status))
+	    return status;
+
+	params->approx_size = length;
+	surface->stream = old_stream;
+	_cairo_pdf_operators_set_stream (&surface->pdf_operators,
+					 surface->stream);
+    }
+
+  surface_emitted:
+
+    return status;
+}
+
+static void
+_cairo_ps_form_emit (void *entry, void *closure)
+{
+    cairo_ps_form_t *form = entry;
+    cairo_ps_surface_t *surface = closure;
+    cairo_emit_surface_params_t params;
+    cairo_int_status_t status;
+    cairo_output_stream_t *old_stream;
+
+    params.src_surface = form->src_surface;
+    params.op = CAIRO_OPERATOR_OVER;
+    params.src_op_extents = &form->required_extents;
+    params.filter = form->filter;
+    params.stencil_mask = FALSE;
+    params.is_image = form->is_image;
+    params.approx_size = 0;
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%BeginResource: form cairoform-%d\n",
+				 form->id);
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "/cairo_paint_form-%d",
+				 form->id);
+    if (surface->ps_level == CAIRO_PS_LEVEL_3) {
+	surface->paint_proc = FALSE;
+	_cairo_output_stream_printf (surface->final_stream,
+				     "\n"
+				     "currentfile\n"
+				     "<< /Filter /SubFileDecode\n"
+				     "   /DecodeParms << /EODString (%s) /EODCount 0 >>\n"
+				     ">> /ReusableStreamDecode filter\n",
+				     SUBFILE_FILTER_EOD);
+    } else {
+	surface->paint_proc = TRUE;
+	_cairo_output_stream_printf (surface->final_stream,
+				     " {\n");
+    }
+    _cairo_output_stream_printf (surface->final_stream,
+				 "5 dict begin\n");
+
+    old_stream = surface->stream;
+    surface->stream = surface->final_stream;
+    _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->stream);
+    status = _cairo_ps_surface_emit_surface (surface,
+					     CAIRO_EMIT_SURFACE_EMIT_FORM,
+					     &params);
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    surface->stream = old_stream;
+    _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->stream);
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "end\n");
+    if (surface->ps_level == CAIRO_PS_LEVEL_3) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "%s\n"
+				     "def\n",
+				     SUBFILE_FILTER_EOD);
+    } else {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "} bind def\n");
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "\n"
+				 "/cairoform-%d\n"
+				 "<<\n"
+				 "  /FormType 1\n",
+				 form->id);
+
+    if (form->is_image) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "  /BBox [ 0 0 1 1 ]\n");
+    } else {
+	_cairo_output_stream_printf (surface->final_stream,
+				     "  /BBox [ %d %d %d %d ]\n",
+				     form->required_extents.x,
+				     form->required_extents.y,
+				     form->required_extents.x + form->required_extents.width,
+				     form->required_extents.y + form->required_extents.height);
+    }
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "  /Matrix [ 1 0 0 1 0 0 ]\n"
+				 "  /PaintProc { pop cairo_paint_form-%d",
+				 form->id);
+
+    if (surface->ps_level == CAIRO_PS_LEVEL_3) {
+	_cairo_output_stream_printf (surface->final_stream,
+				     " dup 0 setfileposition cvx exec");
+    }
+    _cairo_output_stream_printf (surface->final_stream,
+				 " } bind\n"
+				 ">>\n"
+				 "/Form defineresource pop\n");
+
+    _cairo_output_stream_printf (surface->final_stream,
+				 "%%%%EndResource\n");
+    if (status)
+	surface->base.status = status;
+}
+
+static void
+_path_fixed_init_rectangle (cairo_path_fixed_t *path,
+			    cairo_rectangle_int_t *rect)
+{
+    cairo_status_t status;
+
+    _cairo_path_fixed_init (path);
+
+    status = _cairo_path_fixed_move_to (path,
+					_cairo_fixed_from_int (rect->x),
+					_cairo_fixed_from_int (rect->y));
+    assert (status == CAIRO_STATUS_SUCCESS);
+    status = _cairo_path_fixed_rel_line_to (path,
+					    _cairo_fixed_from_int (rect->width),
+					    _cairo_fixed_from_int (0));
+    assert (status == CAIRO_STATUS_SUCCESS);
+    status = _cairo_path_fixed_rel_line_to (path,
+					    _cairo_fixed_from_int (0),
+					    _cairo_fixed_from_int (rect->height));
+    assert (status == CAIRO_STATUS_SUCCESS);
+    status = _cairo_path_fixed_rel_line_to (path,
+					    _cairo_fixed_from_int (-rect->width),
+					    _cairo_fixed_from_int (0));
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    status = _cairo_path_fixed_close_path (path);
+    assert (status == CAIRO_STATUS_SUCCESS);
+}
+
+static cairo_status_t
+_cairo_ps_surface_paint_surface (cairo_ps_surface_t     *surface,
+				 const cairo_pattern_t  *pattern,
+				 cairo_rectangle_int_t  *extents,
+				 cairo_operator_t	 op,
+				 cairo_bool_t            stencil_mask)
+{
+    cairo_rectangle_int_t src_surface_extents;
+    cairo_bool_t src_surface_bounded;
+    cairo_rectangle_int_t src_op_extents;
+    cairo_surface_t *source_surface;
+    double x_offset, y_offset;
+    cairo_status_t status;
+    cairo_matrix_t cairo_p2d, ps_p2d;
+    cairo_path_fixed_t path;
+    cairo_emit_surface_params_t params;
+    cairo_image_surface_t *image = NULL;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_ps_surface_acquire_source_surface_from_pattern (surface,
+								    pattern,
+								    extents,
+								    &src_surface_extents,
+								    &src_surface_bounded,
+								    &src_op_extents,
+								    &source_surface,
+								    &x_offset,
+								    &y_offset);
+    if (unlikely (status))
+	return status;
+
+    if (pattern->extend == CAIRO_EXTEND_PAD &&
+	pattern->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	((cairo_surface_pattern_t *)pattern)->surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
+	cairo_image_surface_t *img;
+
+	img = (cairo_image_surface_t *) source_surface;
+	status = _cairo_ps_surface_create_padded_image_from_image (surface,
+								   img,
+								   &pattern->matrix,
+								   extents,
+								   &image,
+								   &src_surface_extents);
+	if (unlikely (status))
+	    goto release_source;
+
+	x_offset = src_surface_extents.x;
+	y_offset = src_surface_extents.y;
+    }
+
+    _path_fixed_init_rectangle (&path, extents);
+    status = _cairo_pdf_operators_clip (&surface->pdf_operators,
+					&path,
+					CAIRO_FILL_RULE_WINDING);
+    _cairo_path_fixed_fini (&path);
+    if (unlikely (status))
+	goto release_source;
+
+    cairo_p2d = pattern->matrix;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_FALLBACK) {
+	double x_scale = cairo_p2d.xx;
+	double y_scale = cairo_p2d.yy;
+
+	_cairo_output_stream_printf (surface->stream,
+				     "%% Fallback Image: x=%f y=%f w=%d h=%d ",
+				     -cairo_p2d.x0/x_scale,
+				     -cairo_p2d.y0/y_scale,
+				     (int)(src_surface_extents.width/x_scale),
+				     (int)(src_surface_extents.height/y_scale));
+	if (x_scale == y_scale) {
+	    _cairo_output_stream_printf (surface->stream,
+					 "res=%fppi ",
+					 x_scale*72);
+	} else {
+	    _cairo_output_stream_printf (surface->stream,
+					 "res=%fx%fppi ",
+					 x_scale*72,
+					 y_scale*72);
+	}
+	_cairo_output_stream_printf (surface->stream,
+				     "size=%ld\n",
+				     (long)src_surface_extents.width * src_surface_extents.height * 3);
+    } else {
+	if (op == CAIRO_OPERATOR_SOURCE) {
+	    _cairo_output_stream_printf (surface->stream,
+					 "%d g %d %d %d %d rectfill\n",
+					 surface->content == CAIRO_CONTENT_COLOR ? 0 : 1,
+					 surface->surface_extents.x,
+					 surface->surface_extents.y,
+					 surface->surface_extents.width,
+					 surface->surface_extents.height);
+	}
+    }
+
+    status = cairo_matrix_invert (&cairo_p2d);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    ps_p2d = surface->cairo_to_ps;
+    cairo_matrix_multiply (&ps_p2d, &cairo_p2d, &ps_p2d);
+    cairo_matrix_translate (&ps_p2d, x_offset, y_offset);
+
+    params.src_surface = image ? &image->base : source_surface;
+    params.op = op;
+    params.src_surface_extents = &src_surface_extents;
+    params.src_surface_bounded = src_surface_bounded;
+    params.src_op_extents = &src_op_extents;
+    params.filter = pattern->filter;
+    params.stencil_mask = stencil_mask;
+    params.is_image = FALSE;
+    params.approx_size = 0;
+
+    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_ANALYZE, &params);
+    if (unlikely (status))
+	goto release_source;
+
+    if (params.is_image) {
+	cairo_matrix_translate (&ps_p2d, 0.0, src_surface_extents.height);
+	cairo_matrix_scale (&ps_p2d, 1.0, -1.0);
+	cairo_matrix_scale (&ps_p2d, src_surface_extents.width, src_surface_extents.height);
+    }
+
+    if (! _cairo_matrix_is_identity (&ps_p2d)) {
+	_cairo_output_stream_printf (surface->stream, "[ ");
+	_cairo_output_stream_print_matrix (surface->stream, &ps_p2d);
+	_cairo_output_stream_printf (surface->stream, " ] concat\n");
+    }
+
+    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_EMIT, &params);
+
+  release_source:
+    if (image)
+	cairo_surface_destroy (&image->base);
+
+    _cairo_ps_surface_release_source_surface_from_pattern (surface, pattern, source_surface);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_surface_pattern (cairo_ps_surface_t      *surface,
+					cairo_pattern_t         *pattern,
+					cairo_rectangle_int_t   *extents,
+					cairo_operator_t	 op)
+{
+    cairo_status_t status;
+    double xstep, ystep;
+    cairo_rectangle_int_t pattern_extents;
+    cairo_bool_t bounded;
+    cairo_matrix_t cairo_p2d, ps_p2d;
+    cairo_bool_t old_paint_proc;
+    double x_offset, y_offset;
+    cairo_surface_t *source_surface;
+    cairo_image_surface_t *image = NULL;
+    cairo_rectangle_int_t src_op_extents;
+    cairo_emit_surface_params_t params;
+    cairo_extend_t extend = cairo_pattern_get_extend (pattern);
+
+    cairo_p2d = pattern->matrix;
+    status = cairo_matrix_invert (&cairo_p2d);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    status = _cairo_ps_surface_acquire_source_surface_from_pattern (surface,
+								    pattern,
+								    extents,
+								    &pattern_extents,
+								    &bounded,
+								    &src_op_extents,
+								    &source_surface,
+								    &x_offset, &y_offset);
+    if (unlikely (status))
+	return status;
+
+    if (extend == CAIRO_EXTEND_PAD) {
+	cairo_image_surface_t *img;
+
+	assert (source_surface->type == CAIRO_SURFACE_TYPE_IMAGE);
+	img = (cairo_image_surface_t *) source_surface;
+	status = _cairo_ps_surface_create_padded_image_from_image (surface,
+								   img,
+								   &pattern->matrix,
+								   extents,
+								   &image,
+								   &pattern_extents);
+	if (unlikely (status))
+	    goto release_source;
+    }
+    if (unlikely (status))
+	goto release_source;
+
+    if (!bounded)
+    {
+	extend = CAIRO_EXTEND_NONE;
+	_cairo_rectangle_intersect (&pattern_extents, &src_op_extents);
+    }
+
+    switch (extend) {
+    case CAIRO_EXTEND_PAD:
+    case CAIRO_EXTEND_NONE:
+    {
+	/* In PS/PDF, (as far as I can tell), all patterns are
+	 * repeating. So we support cairo's EXTEND_NONE semantics
+	 * by setting the repeat step size to a size large enough
+	 * to guarantee that no more than a single occurrence will
+	 * be visible.
+	 *
+	 * First, map the surface extents into pattern space (since
+	 * xstep and ystep are in pattern space).  Then use an upper
+	 * bound on the length of the diagonal of the pattern image
+	 * and the surface as repeat size.  This guarantees to never
+	 * repeat visibly.
+	 */
+	double x1 = 0.0, y1 = 0.0;
+	double x2 = surface->surface_extents.width;
+	double y2 = surface->surface_extents.height;
+	_cairo_matrix_transform_bounding_box (&pattern->matrix,
+					      &x1, &y1, &x2, &y2,
+					      NULL);
+
+	/* Rather than computing precise bounds of the union, just
+	 * add the surface extents unconditionally. We only
+	 * required an answer that's large enough, we don't really
+	 * care if it's not as tight as possible.*/
+	xstep = ystep = ceil ((x2 - x1) + (y2 - y1) +
+			      pattern_extents.width + pattern_extents.height);
+	break;
+    }
+    case CAIRO_EXTEND_REPEAT:
+	xstep = pattern_extents.width;
+	ystep = pattern_extents.height;
+	break;
+    case CAIRO_EXTEND_REFLECT:
+	xstep = pattern_extents.width*2;
+	ystep = pattern_extents.height*2;
+	break;
+	/* All the rest (if any) should have been analyzed away, so these
+	 * cases should be unreachable. */
+    default:
+	ASSERT_NOT_REACHED;
+	xstep = 0;
+	ystep = 0;
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "/CairoPattern {\n"
+				 "q %d %d %d %d rectclip\n",
+				 pattern_extents.x, pattern_extents.y,
+				 pattern_extents.width, pattern_extents.height);
+
+    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT)
+	src_op_extents = pattern_extents;
+
+    old_paint_proc = surface->paint_proc;
+    surface->paint_proc = TRUE;
+    params.src_surface = image ? &image->base : source_surface;
+    params.op = op;
+    params.src_surface_extents = &pattern_extents;
+    params.src_surface_bounded = bounded;
+    params.src_op_extents = &src_op_extents;
+    params.filter = pattern->filter;
+    params.stencil_mask = FALSE;
+    params.is_image = FALSE;
+    params.approx_size = 0;
+    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_ANALYZE, &params);
+    if (unlikely (status))
+	goto release_source;
+
+    if (params.is_image) {
+	_cairo_output_stream_printf (surface->stream,
+				     "[ %d 0 0 %d 0 0 ] concat\n",
+				     pattern_extents.width, pattern_extents.height);
+    }
+
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	_cairo_output_stream_printf (surface->stream,
+				     "%d g %d %d %f %f rectfill\n",
+				     surface->content == CAIRO_CONTENT_COLOR ? 0 : 1,
+				     pattern_extents.x, pattern_extents.y,
+				     xstep, ystep);
+    }
+
+    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_EMIT, &params);
+    if (unlikely (status))
+	goto release_source;
+
+    _cairo_output_stream_printf (surface->stream,
+				 " Q } bind def\n");
+
+    _cairo_output_stream_printf (surface->stream,
+				 "<< /PatternType 1\n"
+				 "   /PaintType 1\n"
+				 "   /TilingType 1\n");
+    _cairo_output_stream_printf (surface->stream,
+				 "   /XStep %f /YStep %f\n",
+				 xstep, ystep);
+
+    if (extend == CAIRO_EXTEND_REFLECT) {
+	cairo_matrix_t mat;
+
+	_cairo_output_stream_printf (surface->stream,
+				     "   /BBox [%d %d %d %d]\n"
+				     "   /PaintProc {\n"
+				     "      pop CairoPattern\n",
+				     pattern_extents.x,
+				     pattern_extents.y,
+				     pattern_extents.x + pattern_extents.width*2,
+				     pattern_extents.y + pattern_extents.height*2);
+
+	cairo_matrix_init_translate (&mat, pattern_extents.x, pattern_extents.y);
+	cairo_matrix_scale (&mat, -1, 1);
+	cairo_matrix_translate (&mat, -2*pattern_extents.width, 0);
+	cairo_matrix_translate (&mat, -pattern_extents.x, -pattern_extents.y);
+	_cairo_output_stream_printf (surface->stream, "      q [");
+	_cairo_output_stream_print_matrix (surface->stream, &mat);
+	_cairo_output_stream_printf (surface->stream, "] concat CairoPattern Q\n");
+
+	cairo_matrix_init_translate (&mat, pattern_extents.x, pattern_extents.y);
+	cairo_matrix_scale (&mat, 1, -1);
+	cairo_matrix_translate (&mat, 0, -2*pattern_extents.height);
+	cairo_matrix_translate (&mat, -pattern_extents.x, -pattern_extents.y);
+	_cairo_output_stream_printf (surface->stream, "      q [");
+	_cairo_output_stream_print_matrix (surface->stream, &mat);
+	_cairo_output_stream_printf (surface->stream, "] concat CairoPattern Q\n");
+
+	cairo_matrix_init_translate (&mat, pattern_extents.x, pattern_extents.y);
+	cairo_matrix_scale (&mat, -1, -1);
+	cairo_matrix_translate (&mat, -2*pattern_extents.width, -2*pattern_extents.height);
+	cairo_matrix_translate (&mat, -pattern_extents.x, -pattern_extents.y);
+	_cairo_output_stream_printf (surface->stream, "      q [");
+	_cairo_output_stream_print_matrix (surface->stream, &mat);
+	_cairo_output_stream_printf (surface->stream, "] concat CairoPattern Q\n");
+
+	_cairo_output_stream_printf (surface->stream, "   } bind\n");
+    } else {
+	if (op == CAIRO_OPERATOR_SOURCE) {
+	    _cairo_output_stream_printf (surface->stream,
+					 "   /BBox [0 0 %f %f]\n",
+					 xstep, ystep);
+	} else {
+	    _cairo_output_stream_printf (surface->stream,
+					 "   /BBox [%d %d %d %d]\n",
+					 pattern_extents.x,
+					 pattern_extents.y,
+					 pattern_extents.x + pattern_extents.width,
+					 pattern_extents.y + pattern_extents.height);
+	}
+	_cairo_output_stream_printf (surface->stream,
+				     "   /PaintProc { pop CairoPattern }\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 ">>\n");
+
+    cairo_p2d = pattern->matrix;
+    status = cairo_matrix_invert (&cairo_p2d);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    cairo_matrix_init_identity (&ps_p2d);
+    cairo_matrix_multiply (&ps_p2d, &cairo_p2d, &ps_p2d);
+    cairo_matrix_translate (&ps_p2d, x_offset, y_offset);
+    if (((cairo_surface_pattern_t *)pattern)->surface->type != CAIRO_SURFACE_TYPE_RECORDING)
+    {
+	cairo_matrix_translate (&ps_p2d, 0.0, pattern_extents.height);
+	cairo_matrix_scale (&ps_p2d, 1.0, -1.0);
+    }
+
+    _cairo_output_stream_printf (surface->stream, "[ ");
+    _cairo_output_stream_print_matrix (surface->stream, &ps_p2d);
+    _cairo_output_stream_printf (surface->stream,
+				 " ]\n"
+				 "makepattern setpattern\n");
+
+    surface->paint_proc = old_paint_proc;
+
+  release_source:
+    if (image)
+	cairo_surface_destroy (&image->base);
+
+    _cairo_ps_surface_release_source_surface_from_pattern (surface, pattern, source_surface);
+
+    return status;
+}
+
+typedef struct _cairo_ps_color_stop {
+    double offset;
+    double color[4];
+} cairo_ps_color_stop_t;
+
+static void
+_cairo_ps_surface_emit_linear_colorgradient (cairo_ps_surface_t     *surface,
+					     cairo_ps_color_stop_t  *stop1,
+					     cairo_ps_color_stop_t  *stop2)
+{
+    _cairo_output_stream_printf (surface->stream,
+				 "   << /FunctionType 2\n"
+				 "      /Domain [ 0 1 ]\n"
+				 "      /C0 [ %f %f %f ]\n"
+				 "      /C1 [ %f %f %f ]\n"
+				 "      /N 1\n"
+				 "   >>\n",
+				 stop1->color[0],
+				 stop1->color[1],
+				 stop1->color[2],
+				 stop2->color[0],
+				 stop2->color[1],
+				 stop2->color[2]);
+}
+
+static void
+_cairo_ps_surface_emit_stitched_colorgradient (cairo_ps_surface_t    *surface,
+					       unsigned int 	      n_stops,
+					       cairo_ps_color_stop_t  stops[])
+{
+    unsigned int i;
+
+    _cairo_output_stream_printf (surface->stream,
+				 "<< /FunctionType 3\n"
+				 "   /Domain [ 0 1 ]\n"
+				 "   /Functions [\n");
+    for (i = 0; i < n_stops - 1; i++)
+	_cairo_ps_surface_emit_linear_colorgradient (surface, &stops[i], &stops[i+1]);
+
+    _cairo_output_stream_printf (surface->stream, "   ]\n");
+
+    _cairo_output_stream_printf (surface->stream, "   /Bounds [ ");
+    for (i = 1; i < n_stops-1; i++)
+	_cairo_output_stream_printf (surface->stream, "%f ", stops[i].offset);
+    _cairo_output_stream_printf (surface->stream, "]\n");
+
+    _cairo_output_stream_printf (surface->stream, "   /Encode [ 1 1 %d { pop 0 1 } for ]\n",
+				 n_stops - 1);
+
+    _cairo_output_stream_printf (surface->stream, ">>\n");
+}
+
+static void
+calc_gradient_color (cairo_ps_color_stop_t *new_stop,
+		     cairo_ps_color_stop_t *stop1,
+		     cairo_ps_color_stop_t *stop2)
+{
+    int i;
+    double offset = stop1->offset / (stop1->offset + 1.0 - stop2->offset);
+
+    for (i = 0; i < 4; i++)
+	new_stop->color[i] = stop1->color[i] + offset*(stop2->color[i] - stop1->color[i]);
+}
+
+#define COLOR_STOP_EPSILON 1e-6
+
+static cairo_status_t
+_cairo_ps_surface_emit_pattern_stops (cairo_ps_surface_t       *surface,
+				      cairo_gradient_pattern_t *pattern)
+{
+    cairo_ps_color_stop_t *allstops, *stops;
+    unsigned int i, n_stops;
+
+    allstops = _cairo_malloc_ab ((pattern->n_stops + 2), sizeof (cairo_ps_color_stop_t));
+    if (unlikely (allstops == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    stops = &allstops[1];
+    n_stops = pattern->n_stops;
+
+    for (i = 0; i < n_stops; i++) {
+	cairo_gradient_stop_t *stop = &pattern->stops[i];
+
+	stops[i].color[0] = stop->color.red;
+	stops[i].color[1] = stop->color.green;
+	stops[i].color[2] = stop->color.blue;
+	stops[i].color[3] = stop->color.alpha;
+	stops[i].offset = pattern->stops[i].offset;
+    }
+
+    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
+	pattern->base.extend == CAIRO_EXTEND_REFLECT)
+    {
+	if (stops[0].offset > COLOR_STOP_EPSILON) {
+	    if (pattern->base.extend == CAIRO_EXTEND_REFLECT)
+		memcpy (allstops, stops, sizeof (cairo_ps_color_stop_t));
+	    else
+		calc_gradient_color (&allstops[0], &stops[0], &stops[n_stops-1]);
+	    stops = allstops;
+	    n_stops++;
+	}
+	stops[0].offset = 0.0;
+
+	if (stops[n_stops-1].offset < 1.0 - COLOR_STOP_EPSILON) {
+	    if (pattern->base.extend == CAIRO_EXTEND_REFLECT) {
+		memcpy (&stops[n_stops],
+			&stops[n_stops - 1],
+			sizeof (cairo_ps_color_stop_t));
+	    } else {
+		calc_gradient_color (&stops[n_stops], &stops[0], &stops[n_stops-1]);
+	    }
+	    n_stops++;
+	}
+	stops[n_stops-1].offset = 1.0;
+    }
+
+    for (i = 0; i < n_stops; i++) {
+	double red, green, blue;
+	cairo_color_t color;
+
+	_cairo_color_init_rgba (&color,
+				stops[i].color[0],
+				stops[i].color[1],
+				stops[i].color[2],
+				stops[i].color[3]);
+	_cairo_ps_surface_flatten_transparency (surface, &color,
+						&red, &green, &blue);
+	stops[i].color[0] = red;
+	stops[i].color[1] = green;
+	stops[i].color[2] = blue;
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "/CairoFunction\n");
+    if (stops[0].offset == stops[n_stops - 1].offset) {
+	/*
+	 * The first and the last stops have the same offset, but we
+	 * don't want a function with an empty domain, because that
+	 * would provoke underdefined behaviour from rasterisers.
+	 * This can only happen with EXTEND_PAD, because EXTEND_NONE
+	 * is optimised into a clear pattern in cairo-gstate, and
+	 * REFLECT/REPEAT are always transformed to have the first
+	 * stop at t=0 and the last stop at t=1.  Thus we want a step
+	 * function going from the first color to the last one.
+	 *
+	 * This can be accomplished by stitching three functions:
+	 *  - a constant first color function,
+	 *  - a step from the first color to the last color (with empty domain)
+	 *  - a constant last color function
+	 */
+	cairo_ps_color_stop_t pad_stops[4];
+
+	assert (pattern->base.extend == CAIRO_EXTEND_PAD);
+
+	pad_stops[0] = pad_stops[1] = stops[0];
+	pad_stops[2] = pad_stops[3] = stops[n_stops - 1];
+
+	pad_stops[0].offset = 0;
+	pad_stops[3].offset = 1;
+
+	_cairo_ps_surface_emit_stitched_colorgradient (surface, 4, pad_stops);
+    } else if (n_stops == 2) {
+	/* no need for stitched function */
+	_cairo_ps_surface_emit_linear_colorgradient (surface, &stops[0], &stops[1]);
+    } else {
+	/* multiple stops: stitch. XXX possible optimization: regulary spaced
+	 * stops do not require stitching. XXX */
+	_cairo_ps_surface_emit_stitched_colorgradient (surface, n_stops, stops);
+    }
+    _cairo_output_stream_printf (surface->stream,
+				 "def\n");
+
+    free (allstops);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_repeating_function (cairo_ps_surface_t       *surface,
+					   cairo_gradient_pattern_t *pattern,
+					   int                       begin,
+					   int                       end)
+{
+    _cairo_output_stream_printf (surface->stream,
+				 "/CairoFunction\n"
+				 "<< /FunctionType 3\n"
+				 "   /Domain [ %d %d ]\n"
+				 "   /Functions [ %d {CairoFunction} repeat ]\n"
+				 "   /Bounds [ %d 1 %d {} for ]\n",
+				 begin,
+                                 end,
+				 end - begin,
+				 begin + 1,
+				 end - 1);
+
+    if (pattern->base.extend == CAIRO_EXTEND_REFLECT) {
+	_cairo_output_stream_printf (surface->stream, "   /Encode [ %d 1 %d { 2 mod 0 eq {0 1} {1 0} ifelse } for ]\n",
+				     begin,
+				     end - 1);
+    } else {
+	_cairo_output_stream_printf (surface->stream, "   /Encode [ %d 1 %d { pop 0 1 } for ]\n",
+				     begin,
+				     end - 1);
+    }
+
+    _cairo_output_stream_printf (surface->stream, ">> def\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_gradient (cairo_ps_surface_t       *surface,
+				 cairo_gradient_pattern_t *pattern,
+				 cairo_bool_t              is_ps_pattern)
+{
+    cairo_matrix_t pat_to_ps;
+    cairo_circle_double_t start, end;
+    double domain[2];
+    cairo_status_t status;
+
+    assert (pattern->n_stops != 0);
+
+    status = _cairo_ps_surface_emit_pattern_stops (surface, pattern);
+    if (unlikely (status))
+	return status;
+
+    pat_to_ps = pattern->base.matrix;
+    status = cairo_matrix_invert (&pat_to_ps);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+    cairo_matrix_multiply (&pat_to_ps, &pat_to_ps, &surface->cairo_to_ps);
+
+    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
+	pattern->base.extend == CAIRO_EXTEND_REFLECT)
+    {
+	double bounds_x1, bounds_x2, bounds_y1, bounds_y2;
+	double x_scale, y_scale, tolerance;
+
+	/* TODO: use tighter extents */
+	bounds_x1 = 0;
+	bounds_y1 = 0;
+	bounds_x2 = surface->width;
+	bounds_y2 = surface->height;
+	_cairo_matrix_transform_bounding_box (&pattern->base.matrix,
+					      &bounds_x1, &bounds_y1,
+					      &bounds_x2, &bounds_y2,
+					      NULL);
+
+	x_scale = surface->base.x_resolution / surface->base.x_fallback_resolution;
+	y_scale = surface->base.y_resolution / surface->base.y_fallback_resolution;
+
+	tolerance = fabs (_cairo_matrix_compute_determinant (&pattern->base.matrix));
+	tolerance /= _cairo_matrix_transformed_circle_major_axis (&pattern->base.matrix, 1);
+	tolerance *= MIN (x_scale, y_scale);
+
+	_cairo_gradient_pattern_box_to_parameter (pattern,
+						  bounds_x1, bounds_y1,
+						  bounds_x2, bounds_y2,
+						  tolerance, domain);
+    } else if (pattern->stops[0].offset == pattern->stops[pattern->n_stops - 1].offset) {
+	/*
+	 * If the first and the last stop offset are the same, then
+	 * the color function is a step function.
+	 * _cairo_ps_surface_emit_pattern_stops emits it as a stitched
+	 * function no matter how many stops the pattern has.  The
+	 * domain of the stitched function will be [0 1] in this case.
+	 *
+	 * This is done to avoid emitting degenerate gradients for
+	 * EXTEND_PAD patterns having a step color function.
+	 */
+	domain[0] = 0.0;
+	domain[1] = 1.0;
+
+	assert (pattern->base.extend == CAIRO_EXTEND_PAD);
+    } else {
+	domain[0] = pattern->stops[0].offset;
+	domain[1] = pattern->stops[pattern->n_stops - 1].offset;
+    }
+
+    /* PS requires the first and last stop to be the same as the
+     * extreme coordinates. For repeating patterns this moves the
+     * extreme coordinates out to the begin/end of the repeating
+     * function. For non repeating patterns this may move the extreme
+     * coordinates in if there are not stops at offset 0 and 1. */
+    _cairo_gradient_pattern_interpolate (pattern, domain[0], &start);
+    _cairo_gradient_pattern_interpolate (pattern, domain[1], &end);
+
+    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
+	pattern->base.extend == CAIRO_EXTEND_REFLECT)
+    {
+	int repeat_begin, repeat_end;
+
+	repeat_begin = floor (domain[0]);
+	repeat_end = ceil (domain[1]);
+
+	status = _cairo_ps_surface_emit_repeating_function (surface,
+							    pattern,
+							    repeat_begin,
+							    repeat_end);
+	if (unlikely (status))
+	    return status;
+    } else if (pattern->n_stops <= 2) {
+	/* For EXTEND_NONE and EXTEND_PAD if there are only two stops a
+	 * Type 2 function is used by itself without a stitching
+	 * function. Type 2 functions always have the domain [0 1] */
+	domain[0] = 0.0;
+	domain[1] = 1.0;
+    }
+
+    if (is_ps_pattern) {
+	_cairo_output_stream_printf (surface->stream,
+				     "<< /PatternType 2\n"
+				     "   /Shading\n");
+    }
+
+    if (pattern->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	_cairo_output_stream_printf (surface->stream,
+				     "   << /ShadingType 2\n"
+				     "      /ColorSpace /DeviceRGB\n"
+				     "      /Coords [ %f %f %f %f ]\n",
+				     start.center.x, start.center.y,
+				     end.center.x, end.center.y);
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "   << /ShadingType 3\n"
+				     "      /ColorSpace /DeviceRGB\n"
+				     "      /Coords [ %f %f %f %f %f %f ]\n",
+				     start.center.x, start.center.y,
+				     MAX (start.radius, 0),
+				     end.center.x, end.center.y,
+				     MAX (end.radius, 0));
+    }
+
+    if (pattern->base.extend != CAIRO_EXTEND_NONE) {
+	_cairo_output_stream_printf (surface->stream,
+                                     "      /Extend [ true true ]\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+                                     "      /Extend [ false false ]\n");
+    }
+
+    if (domain[0] == 0.0 && domain[1] == 1.0) {
+	_cairo_output_stream_printf (surface->stream,
+				     "      /Function CairoFunction\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "      /Function <<\n"
+				     "         /FunctionType 3\n"
+				     "         /Domain [ 0 1 ]\n"
+				     "         /Bounds [ ]\n"
+				     "         /Encode [ %f %f ]\n"
+				     "         /Functions [ CairoFunction ]\n"
+				     "      >>\n",
+				     domain[0], domain[1]);
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "   >>\n");
+
+    if (is_ps_pattern) {
+	_cairo_output_stream_printf (surface->stream,
+				     ">>\n"
+				     "[ ");
+    _cairo_output_stream_print_matrix (surface->stream, &pat_to_ps);
+    _cairo_output_stream_printf (surface->stream, " ]\n"
+				 "makepattern setpattern\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream,
+				     "shfill\n");
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_mesh_pattern (cairo_ps_surface_t     *surface,
+				     cairo_mesh_pattern_t   *pattern,
+				     cairo_bool_t            is_ps_pattern)
+{
+    cairo_matrix_t pat_to_ps;
+    cairo_status_t status;
+    cairo_pdf_shading_t shading;
+    int i;
+
+    if (_cairo_array_num_elements (&pattern->patches) == 0)
+        return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    pat_to_ps = pattern->base.matrix;
+    status = cairo_matrix_invert (&pat_to_ps);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    cairo_matrix_multiply (&pat_to_ps, &pat_to_ps, &surface->cairo_to_ps);
+
+    status = _cairo_pdf_shading_init_color (&shading, pattern);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->stream,
+				 "currentfile\n"
+				 "/ASCII85Decode filter /FlateDecode filter /ReusableStreamDecode filter\n");
+
+    status = _cairo_ps_surface_emit_base85_string (surface,
+						   shading.data,
+						   shading.data_length,
+						   CAIRO_PS_COMPRESS_DEFLATE,
+						   FALSE);
+    if (status)
+	return status;
+
+    _cairo_output_stream_printf (surface->stream,
+				 "\n"
+				 "/CairoData exch def\n");
+
+    if (is_ps_pattern) {
+	_cairo_output_stream_printf (surface->stream,
+				     "<< /PatternType 2\n"
+				     "   /Shading\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "   << /ShadingType %d\n"
+				 "      /ColorSpace /DeviceRGB\n"
+				 "      /DataSource CairoData\n"
+				 "      /BitsPerCoordinate %d\n"
+				 "      /BitsPerComponent %d\n"
+				 "      /BitsPerFlag %d\n"
+				 "      /Decode [",
+				 shading.shading_type,
+				 shading.bits_per_coordinate,
+				 shading.bits_per_component,
+				 shading.bits_per_flag);
+
+    for (i = 0; i < shading.decode_array_length; i++)
+	_cairo_output_stream_printf (surface->stream, "%f ", shading.decode_array[i]);
+
+    _cairo_output_stream_printf (surface->stream,
+				 "]\n"
+				 "   >>\n");
+
+    if (is_ps_pattern) {
+	_cairo_output_stream_printf (surface->stream,
+				     ">>\n"
+				     "[ \n");
+	_cairo_output_stream_print_matrix (surface->stream, &pat_to_ps);
+	_cairo_output_stream_printf (surface->stream,
+				     " ]\n"
+				     "makepattern\n"
+				     "setpattern\n");
+    } else {
+	_cairo_output_stream_printf (surface->stream, "shfill\n");
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "currentdict /CairoData undef\n");
+
+    _cairo_pdf_shading_fini (&shading);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_ps_surface_emit_pattern (cairo_ps_surface_t *surface,
+				const cairo_pattern_t *pattern,
+				cairo_rectangle_int_t *extents,
+				cairo_operator_t       op)
+{
+    cairo_status_t status;
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
+	cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
+
+	if (surface->current_pattern_is_solid_color == FALSE ||
+	    ! _cairo_color_equal (&surface->current_color, &solid->color))
+	{
+	    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_ps_surface_emit_solid_pattern (surface, (cairo_solid_pattern_t *) pattern);
+
+	    surface->current_pattern_is_solid_color = TRUE;
+	    surface->current_color = solid->color;
+	}
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    surface->current_pattern_is_solid_color = FALSE;
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	    return status;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+
+	_cairo_ps_surface_emit_solid_pattern (surface, (cairo_solid_pattern_t *) pattern);
+	break;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	status = _cairo_ps_surface_emit_surface_pattern (surface,
+							 (cairo_pattern_t *)pattern,
+							 extents,
+							 op);
+	if (unlikely (status))
+	    return status;
+	break;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	status = _cairo_ps_surface_emit_gradient (surface,
+						  (cairo_gradient_pattern_t *) pattern,
+						  TRUE);
+	if (unlikely (status))
+	    return status;
+	break;
+
+    case CAIRO_PATTERN_TYPE_MESH:
+	status = _cairo_ps_surface_emit_mesh_pattern (surface,
+						      (cairo_mesh_pattern_t *) pattern,
+						      TRUE);
+	if (unlikely (status))
+	    return status;
+	break;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_ps_surface_paint_gradient (cairo_ps_surface_t          *surface,
+				  const cairo_pattern_t       *source,
+				  const cairo_rectangle_int_t *extents)
+{
+    cairo_matrix_t pat_to_ps;
+    cairo_status_t status;
+
+    pat_to_ps = source->matrix;
+    status = cairo_matrix_invert (&pat_to_ps);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+    cairo_matrix_multiply (&pat_to_ps, &pat_to_ps, &surface->cairo_to_ps);
+
+    if (! _cairo_matrix_is_identity (&pat_to_ps)) {
+	_cairo_output_stream_printf (surface->stream, "[");
+	_cairo_output_stream_print_matrix (surface->stream, &pat_to_ps);
+	_cairo_output_stream_printf (surface->stream, "] concat\n");
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_MESH) {
+	status = _cairo_ps_surface_emit_mesh_pattern (surface,
+						      (cairo_mesh_pattern_t *)source,
+						      FALSE);
+	if (unlikely (status))
+	    return status;
+    } else {
+	status = _cairo_ps_surface_emit_gradient (surface,
+						  (cairo_gradient_pattern_t *)source,
+						  FALSE);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_ps_surface_paint_pattern (cairo_ps_surface_t           *surface,
+				 const cairo_pattern_t        *source,
+				 cairo_rectangle_int_t        *extents,
+				 cairo_operator_t              op,
+				 cairo_bool_t                  stencil_mask)
+{
+    switch (source->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+       return _cairo_ps_surface_paint_surface (surface,
+                                               source,
+                                               extents,
+                                               op,
+					       stencil_mask);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+	return _cairo_ps_surface_paint_gradient (surface,
+						 source,
+						 extents);
+
+    case CAIRO_PATTERN_TYPE_SOLID:
+    default:
+       ASSERT_NOT_REACHED;
+       return CAIRO_STATUS_SUCCESS;
+    }
+}
+
+static cairo_bool_t
+_can_paint_pattern (const cairo_pattern_t *pattern)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return FALSE;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return (pattern->extend == CAIRO_EXTEND_NONE ||
+		pattern->extend == CAIRO_EXTEND_PAD);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+	return TRUE;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+_cairo_ps_surface_get_extents (void		       *abstract_surface,
+			       cairo_rectangle_int_t   *rectangle)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+
+    if (surface->surface_bounded)
+	*rectangle = surface->surface_extents;
+
+    return surface->surface_bounded;
+}
+
+static void
+_cairo_ps_surface_get_font_options (void                  *abstract_surface,
+				    cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
+    cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
+    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_OFF);
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_set_clip (cairo_ps_surface_t *surface,
+			    cairo_composite_rectangles_t *composite)
+{
+    cairo_clip_t *clip = composite->clip;
+
+    if (_cairo_composite_rectangles_can_reduce_clip (composite, clip))
+	clip = NULL;
+
+    if (clip == NULL) {
+	if (_cairo_composite_rectangles_can_reduce_clip (composite,
+							 surface->clipper.clip))
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    return _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_paint (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_clip_t	*clip)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_output_stream_t *stream = surface->stream;
+    cairo_composite_rectangles_t extents;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_paint (&extents,
+							 &surface->base,
+							 op, source, clip);
+    if (unlikely (status))
+	return status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (stream,
+				 "%% _cairo_ps_surface_paint\n");
+#endif
+
+    status = _cairo_ps_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    if (_can_paint_pattern (source)) {
+	status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	_cairo_output_stream_printf (stream, "q\n");
+	status = _cairo_ps_surface_paint_pattern (surface,
+						  source,
+						  &extents.bounded, op, FALSE);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	_cairo_output_stream_printf (stream, "Q\n");
+    } else {
+	status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	_cairo_output_stream_printf (stream, "%d %d %d %d rectfill\n",
+				     surface->surface_extents.x,
+				     surface->surface_extents.y,
+				     surface->surface_extents.width,
+				     surface->surface_extents.height);
+    }
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_mask (void			*abstract_surface,
+			cairo_operator_t	 op,
+			const cairo_pattern_t	*source,
+			const cairo_pattern_t	*mask,
+			const cairo_clip_t	*clip)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_output_stream_t *stream = surface->stream;
+    cairo_composite_rectangles_t extents;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_mask (&extents,
+							&surface->base,
+							op, source, mask, clip);
+    if (unlikely (status))
+	return status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_ps_surface_analyze_operation (surface, op, source, mask, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_ps_surface_operation_supported (surface, op, source, mask, &extents.bounded));
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (stream,
+				 "%% _cairo_ps_surface_mask\n");
+#endif
+
+    status = _cairo_ps_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    _cairo_output_stream_printf (stream, "q\n");
+    status = _cairo_ps_surface_paint_pattern (surface,
+					      mask,
+					      &extents.bounded, op, TRUE);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    _cairo_output_stream_printf (stream, "Q\n");
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_stroke (void			*abstract_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  const cairo_path_fixed_t	*path,
+			  const cairo_stroke_style_t	*style,
+			  const cairo_matrix_t	*ctm,
+			  const cairo_matrix_t	*ctm_inverse,
+			  double		 tolerance,
+			  cairo_antialias_t	 antialias,
+			  const cairo_clip_t		*clip)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  &surface->base,
+							  op, source,
+							  path, style, ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    {
+	cairo_rectangle_int_t r;
+	cairo_box_t b;
+
+	status = _cairo_path_fixed_stroke_extents (path, style,
+						   ctm, ctm_inverse,
+						   tolerance,
+						   &r);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	_cairo_box_from_rectangle (&b, &r);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents, &b);
+	if (unlikely (status))
+	    goto cleanup_composite;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->stream,
+				 "%% _cairo_ps_surface_stroke\n");
+#endif
+
+    status = _cairo_ps_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    status = _cairo_pdf_operators_stroke (&surface->pdf_operators,
+					  path,
+					  style,
+					  ctm,
+					  ctm_inverse);
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_fill (void		*abstract_surface,
+			cairo_operator_t	 op,
+			const cairo_pattern_t	*source,
+			const cairo_path_fixed_t*path,
+			cairo_fill_rule_t	 fill_rule,
+			double			 tolerance,
+			cairo_antialias_t	 antialias,
+			const cairo_clip_t		*clip)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_composite_rectangles_t extents;
+    cairo_int_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_fill (&extents,
+							&surface->base,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    {
+	cairo_rectangle_int_t r;
+	cairo_box_t b;
+
+	_cairo_path_fixed_fill_extents (path,
+					fill_rule,
+					tolerance,
+					&r);
+
+	_cairo_box_from_rectangle (&b, &r);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents, &b);
+	if (unlikely (status))
+	    goto cleanup_composite;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->stream,
+				 "%% _cairo_ps_surface_fill\n");
+#endif
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    status = _cairo_ps_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    if (_can_paint_pattern (source)) {
+	_cairo_output_stream_printf (surface->stream, "q\n");
+
+	status =  _cairo_pdf_operators_clip (&surface->pdf_operators,
+					     path,
+					     fill_rule);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	status = _cairo_ps_surface_paint_pattern (surface,
+						  source,
+						  &extents.bounded, op, FALSE);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	_cairo_output_stream_printf (surface->stream, "Q\n");
+	_cairo_pdf_operators_reset (&surface->pdf_operators);
+    } else {
+	status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	status = _cairo_pdf_operators_fill (&surface->pdf_operators,
+					    path,
+					    fill_rule);
+    }
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_bool_t
+_cairo_ps_surface_has_show_text_glyphs	(void			*abstract_surface)
+{
+    return TRUE;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_show_text_glyphs (void		       *abstract_surface,
+				    cairo_operator_t	        op,
+				    const cairo_pattern_t      *source,
+				    const char                 *utf8,
+				    int                         utf8_len,
+				    cairo_glyph_t	       *glyphs,
+				    int			        num_glyphs,
+				    const cairo_text_cluster_t *clusters,
+				    int                         num_clusters,
+				    cairo_text_cluster_flags_t  cluster_flags,
+				    cairo_scaled_font_t	       *scaled_font,
+				    const cairo_clip_t	       *clip)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_composite_rectangles_t extents;
+    cairo_bool_t overlap;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_glyphs (&extents,
+							  &surface->base,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip,
+							  &overlap);
+    if (unlikely (status))
+	return status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));
+
+#if DEBUG_PS
+    _cairo_output_stream_printf (surface->stream,
+				 "%% _cairo_ps_surface_show_glyphs\n");
+#endif
+
+    status = _cairo_ps_surface_set_clip (surface, &extents);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
+						    utf8, utf8_len,
+						    glyphs, num_glyphs,
+						    clusters, num_clusters,
+						    cluster_flags,
+						    scaled_font);
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static const char **
+_cairo_ps_surface_get_supported_mime_types (void		 *abstract_surface)
+{
+    return _cairo_ps_supported_mime_types;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_set_paginated_mode (void			*abstract_surface,
+				      cairo_paginated_mode_t	 paginated_mode)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    surface->paginated_mode = paginated_mode;
+
+    if (paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
+	surface->surface_extents.x = 0;
+	surface->surface_extents.y = 0;
+	surface->surface_extents.width  = ceil (surface->width);
+	surface->surface_extents.height = ceil (surface->height);
+
+	if (surface->clipper.clip != NULL)
+	{
+	    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+
+	    _cairo_output_stream_printf (surface->stream, "Q q\n");
+	    _cairo_surface_clipper_reset (&surface->clipper);
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_ps_surface_set_bounding_box (void		*abstract_surface,
+				    cairo_box_t		*analysis_bbox)
+{
+    cairo_ps_surface_t *surface = abstract_surface;
+    int i, num_comments;
+    char **comments;
+    cairo_bool_t has_page_media, has_page_bbox;
+    const char *page_media;
+    cairo_rectangle_int_t page_bbox;
+    cairo_point_int_t bbox_p1, bbox_p2; /* in PS coordinates */
+
+    _cairo_box_round_to_rectangle (analysis_bbox, &page_bbox);
+
+    /* convert to PS coordinates */
+    bbox_p1.x = page_bbox.x;
+    bbox_p1.y = ceil(surface->height) - (page_bbox.y + page_bbox.height);
+    bbox_p2.x = page_bbox.x + page_bbox.width;
+    bbox_p2.y = ceil(surface->height) - page_bbox.y;
+
+    if (surface->num_pages == 1) {
+	surface->document_bbox_p1 = bbox_p1;
+	surface->document_bbox_p2 = bbox_p2;
+    } else {
+	if (bbox_p1.x < surface->document_bbox_p1.x)
+	    surface->document_bbox_p1.x = bbox_p1.x;
+	if (bbox_p1.y < surface->document_bbox_p1.y)
+	    surface->document_bbox_p1.y = bbox_p1.y;
+	if (bbox_p2.x < surface->document_bbox_p2.x)
+	    surface->document_bbox_p2.x = bbox_p2.x;
+	if (bbox_p2.y < surface->document_bbox_p2.y)
+	    surface->document_bbox_p2.y = bbox_p2.y;
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+				 "%%%%Page: %d %d\n",
+				 surface->num_pages,
+				 surface->num_pages);
+
+    _cairo_output_stream_printf (surface->stream,
+				 "%%%%BeginPageSetup\n");
+
+    has_page_media = FALSE;
+    has_page_bbox = FALSE;
+    num_comments = _cairo_array_num_elements (&surface->dsc_page_setup_comments);
+    comments = _cairo_array_index (&surface->dsc_page_setup_comments, 0);
+    for (i = 0; i < num_comments; i++) {
+	_cairo_output_stream_printf (surface->stream,
+				     "%s\n", comments[i]);
+	if (strncmp (comments[i], "%%PageMedia:", 11) == 0)
+	    has_page_media = TRUE;
+
+	if (strncmp (comments[i], "%%PageBoundingBox:", 18) == 0)
+	    has_page_bbox = TRUE;
+
+	free (comments[i]);
+	comments[i] = NULL;
+    }
+    _cairo_array_truncate (&surface->dsc_page_setup_comments, 0);
+
+    if (!has_page_media && !surface->eps) {
+	page_media = _cairo_ps_surface_get_page_media (surface);
+	if (unlikely (page_media == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_output_stream_printf (surface->stream,
+				     "%%%%PageMedia: %s\n",
+				     page_media);
+    }
+
+    if (!has_page_bbox) {
+	_cairo_output_stream_printf (surface->stream,
+				     "%%%%PageBoundingBox: %d %d %d %d\n",
+				     bbox_p1.x,
+				     bbox_p1.y,
+				     bbox_p2.x,
+				     bbox_p2.y);
+    }
+
+    if (!surface->eps) {
+	_cairo_output_stream_printf (surface->stream,
+				     "%f %f cairo_set_page_size\n",
+				     ceil(surface->width),
+				     ceil(surface->height));
+    }
+
+    _cairo_output_stream_printf (surface->stream,
+                                 "%%%%EndPageSetup\n"
+				 "q %d %d %d %d rectclip\n"
+                                 "1 0 0 -1 0 %f cm q\n",
+				 bbox_p1.x,
+				 bbox_p1.y,
+				 bbox_p2.x - bbox_p1.x,
+				 bbox_p2.y - bbox_p1.y,
+				 ceil(surface->height));
+
+    surface->current_pattern_is_solid_color = FALSE;
+    _cairo_pdf_operators_reset (&surface->pdf_operators);
+
+    return _cairo_output_stream_get_status (surface->stream);
+}
+
+static cairo_bool_t
+_cairo_ps_surface_supports_fine_grained_fallbacks (void	    *abstract_surface)
+{
+    return TRUE;
+}
+
+static const cairo_surface_backend_t cairo_ps_surface_backend = {
+    CAIRO_SURFACE_TYPE_PS,
+    _cairo_ps_surface_finish,
+
+    _cairo_default_context_create,
+
+    NULL, /* create similar: handled by wrapper */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* cairo_ps_surface_copy_page */
+    _cairo_ps_surface_show_page,
+
+    _cairo_ps_surface_get_extents,
+    _cairo_ps_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    /* Here are the drawing functions */
+
+    _cairo_ps_surface_paint, /* paint */
+    _cairo_ps_surface_mask,
+    _cairo_ps_surface_stroke,
+    _cairo_ps_surface_fill,
+    NULL, /* fill-stroke */
+    NULL, /* show_glyphs */
+    _cairo_ps_surface_has_show_text_glyphs,
+    _cairo_ps_surface_show_text_glyphs,
+    _cairo_ps_surface_get_supported_mime_types,
+};
+
+static const cairo_paginated_surface_backend_t cairo_ps_surface_paginated_backend = {
+    _cairo_ps_surface_start_page,
+    _cairo_ps_surface_set_paginated_mode,
+    _cairo_ps_surface_set_bounding_box,
+    NULL, /* _cairo_ps_surface_has_fallback_images, */
+    _cairo_ps_surface_supports_fine_grained_fallbacks,
+};
diff --git a/libs/cairo-1.16.0/src/cairo-ps.h b/libs/cairo-1.16.0/src/cairo-ps.h
new file mode 100644
index 0000000..33d0e0d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-ps.h
@@ -0,0 +1,116 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_PS_H
+#define CAIRO_PS_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_PS_SURFACE
+
+#include <stdio.h>
+
+CAIRO_BEGIN_DECLS
+
+/* PS-surface functions */
+
+/**
+ * cairo_ps_level_t:
+ * @CAIRO_PS_LEVEL_2: The language level 2 of the PostScript specification. (Since 1.6)
+ * @CAIRO_PS_LEVEL_3: The language level 3 of the PostScript specification. (Since 1.6)
+ *
+ * #cairo_ps_level_t is used to describe the language level of the
+ * PostScript Language Reference that a generated PostScript file will
+ * conform to.
+ *
+ * Since: 1.6
+ **/
+typedef enum _cairo_ps_level {
+    CAIRO_PS_LEVEL_2,
+    CAIRO_PS_LEVEL_3
+} cairo_ps_level_t;
+
+cairo_public cairo_surface_t *
+cairo_ps_surface_create (const char		*filename,
+			 double			 width_in_points,
+			 double			 height_in_points);
+
+cairo_public cairo_surface_t *
+cairo_ps_surface_create_for_stream (cairo_write_func_t	write_func,
+				    void	       *closure,
+				    double		width_in_points,
+				    double		height_in_points);
+
+cairo_public void
+cairo_ps_surface_restrict_to_level (cairo_surface_t    *surface,
+                                    cairo_ps_level_t    level);
+
+cairo_public void
+cairo_ps_get_levels (cairo_ps_level_t const  **levels,
+                     int                      *num_levels);
+
+cairo_public const char *
+cairo_ps_level_to_string (cairo_ps_level_t level);
+
+cairo_public void
+cairo_ps_surface_set_eps (cairo_surface_t	*surface,
+			  cairo_bool_t           eps);
+
+cairo_public cairo_bool_t
+cairo_ps_surface_get_eps (cairo_surface_t	*surface);
+
+cairo_public void
+cairo_ps_surface_set_size (cairo_surface_t	*surface,
+			   double		 width_in_points,
+			   double		 height_in_points);
+
+cairo_public void
+cairo_ps_surface_dsc_comment (cairo_surface_t	*surface,
+			      const char	*comment);
+
+cairo_public void
+cairo_ps_surface_dsc_begin_setup (cairo_surface_t *surface);
+
+cairo_public void
+cairo_ps_surface_dsc_begin_page_setup (cairo_surface_t *surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_PS_SURFACE */
+# error Cairo was not compiled with support for the ps backend
+#endif /* CAIRO_HAS_PS_SURFACE */
+
+#endif /* CAIRO_PS_H */
diff --git a/libs/cairo-1.16.0/src/cairo-qt-surface.cpp b/libs/cairo-1.16.0/src/cairo-qt-surface.cpp
new file mode 100644
index 0000000..5f669d8
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-qt-surface.cpp
@@ -0,0 +1,1738 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Corporation.
+ *
+ * Contributor(s):
+ *      Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+/* Get INT16_MIN etc. as per C99 */
+#define __STDC_LIMIT_MACROS
+
+#include "cairoint.h"
+
+#include "cairo-clip-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-types-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-fallback-private.h"
+
+#include "cairo-ft.h"
+#include "cairo-qt.h"
+
+#include <memory>
+
+#include <QtGui/QPainter>
+#include <QtGui/QPaintEngine>
+#include <QtGui/QPaintDevice>
+#include <QtGui/QImage>
+#include <QtGui/QPixmap>
+#include <QtGui/QBrush>
+#include <QtGui/QPen>
+#include <QWidget>
+#include <QtCore/QVarLengthArray>
+
+#if ((QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)) || defined(QT_GLYPHS_API_BACKPORT)) && 0
+extern void qt_draw_glyphs(QPainter *, const quint32 *glyphs, const QPointF *positions, int count);
+#endif
+
+#include <sys/time.h>
+
+/* Enable workaround slow regional Qt paths */
+#define ENABLE_FAST_FILL 0
+#define ENABLE_FAST_CLIP 0
+
+#if 0
+#define D(x)  x
+static const char *
+_opstr (cairo_operator_t op)
+{
+    const char *ops[] = {
+        "CLEAR",
+        "SOURCE",
+        "OVER",
+        "IN",
+        "OUT",
+        "ATOP",
+        "DEST",
+        "DEST_OVER",
+        "DEST_IN",
+        "DEST_OUT",
+        "DEST_ATOP",
+        "XOR",
+        "ADD",
+        "SATURATE"
+    };
+
+    if (op < CAIRO_OPERATOR_CLEAR || op > CAIRO_OPERATOR_SATURATE)
+        return "(\?\?\?)";
+
+    return ops[op];
+}
+#else
+#define D(x) do { } while(0)
+#endif
+
+#ifndef CAIRO_INT_STATUS_SUCCESS
+#define CAIRO_INT_STATUS_SUCCESS ((cairo_int_status_t) CAIRO_STATUS_SUCCESS)
+#endif
+
+/* Qt::PenStyle optimization based on the assumption that dots are 1*w and dashes are 3*w. */
+#define DOT_LENGTH  1.0
+#define DASH_LENGTH 3.0
+
+struct cairo_qt_surface_t {
+    cairo_surface_t base;
+
+    cairo_bool_t supports_porter_duff;
+
+    QPainter *p;
+
+    /* The pixmap/image constructors will store their objects here */
+    QPixmap *pixmap;
+    QImage *image;
+
+    QRect window;
+
+    cairo_surface_clipper_t clipper;
+
+    cairo_surface_t *image_equiv;
+};
+
+/* Will be true if we ever try to create a QPixmap and end
+ * up with one without an alpha channel.
+ */
+static cairo_bool_t _qpixmaps_have_no_alpha = FALSE;
+
+/*
+ * Helper methods
+ */
+
+static QPainter::CompositionMode
+_qpainter_compositionmode_from_cairo_op (cairo_operator_t op)
+{
+    switch (op) {
+    case CAIRO_OPERATOR_CLEAR:
+        return QPainter::CompositionMode_Clear;
+
+    case CAIRO_OPERATOR_SOURCE:
+        return QPainter::CompositionMode_Source;
+    case CAIRO_OPERATOR_OVER:
+        return QPainter::CompositionMode_SourceOver;
+    case CAIRO_OPERATOR_IN:
+        return QPainter::CompositionMode_SourceIn;
+    case CAIRO_OPERATOR_OUT:
+        return QPainter::CompositionMode_SourceOut;
+    case CAIRO_OPERATOR_ATOP:
+        return QPainter::CompositionMode_SourceAtop;
+
+    case CAIRO_OPERATOR_DEST:
+        return QPainter::CompositionMode_Destination;
+    case CAIRO_OPERATOR_DEST_OVER:
+        return QPainter::CompositionMode_DestinationOver;
+    case CAIRO_OPERATOR_DEST_IN:
+        return QPainter::CompositionMode_DestinationIn;
+    case CAIRO_OPERATOR_DEST_OUT:
+        return QPainter::CompositionMode_DestinationOut;
+    case CAIRO_OPERATOR_DEST_ATOP:
+        return QPainter::CompositionMode_DestinationAtop;
+
+    case CAIRO_OPERATOR_XOR:
+        return QPainter::CompositionMode_Xor;
+
+    default:
+    case CAIRO_OPERATOR_ADD:
+    case CAIRO_OPERATOR_SATURATE:
+    case CAIRO_OPERATOR_MULTIPLY:
+    case CAIRO_OPERATOR_SCREEN:
+    case CAIRO_OPERATOR_OVERLAY:
+    case CAIRO_OPERATOR_DARKEN:
+    case CAIRO_OPERATOR_LIGHTEN:
+    case CAIRO_OPERATOR_COLOR_DODGE:
+    case CAIRO_OPERATOR_COLOR_BURN:
+    case CAIRO_OPERATOR_HARD_LIGHT:
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+    case CAIRO_OPERATOR_DIFFERENCE:
+    case CAIRO_OPERATOR_EXCLUSION:
+    case CAIRO_OPERATOR_HSL_HUE:
+    case CAIRO_OPERATOR_HSL_SATURATION:
+    case CAIRO_OPERATOR_HSL_COLOR:
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	ASSERT_NOT_REACHED;
+    }
+}
+
+static bool
+_op_is_supported (cairo_qt_surface_t *qs, cairo_operator_t op)
+{
+    if (qs->p == NULL)
+	return false;
+
+    if (qs->supports_porter_duff) {
+	switch (op) {
+	case CAIRO_OPERATOR_CLEAR:
+	case CAIRO_OPERATOR_SOURCE:
+	case CAIRO_OPERATOR_OVER:
+	case CAIRO_OPERATOR_IN:
+	case CAIRO_OPERATOR_OUT:
+	case CAIRO_OPERATOR_ATOP:
+
+	case CAIRO_OPERATOR_DEST:
+	case CAIRO_OPERATOR_DEST_OVER:
+	case CAIRO_OPERATOR_DEST_IN:
+	case CAIRO_OPERATOR_DEST_OUT:
+	case CAIRO_OPERATOR_DEST_ATOP:
+
+	case CAIRO_OPERATOR_XOR:
+	    return TRUE;
+
+	default:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_OPERATOR_ADD:
+	case CAIRO_OPERATOR_SATURATE:
+	case CAIRO_OPERATOR_MULTIPLY:
+	case CAIRO_OPERATOR_SCREEN:
+	case CAIRO_OPERATOR_OVERLAY:
+	case CAIRO_OPERATOR_DARKEN:
+	case CAIRO_OPERATOR_LIGHTEN:
+	case CAIRO_OPERATOR_COLOR_DODGE:
+	case CAIRO_OPERATOR_COLOR_BURN:
+	case CAIRO_OPERATOR_HARD_LIGHT:
+	case CAIRO_OPERATOR_SOFT_LIGHT:
+	case CAIRO_OPERATOR_DIFFERENCE:
+	case CAIRO_OPERATOR_EXCLUSION:
+	case CAIRO_OPERATOR_HSL_HUE:
+	case CAIRO_OPERATOR_HSL_SATURATION:
+	case CAIRO_OPERATOR_HSL_COLOR:
+	case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	    return FALSE;
+
+	}
+    } else {
+	return op == CAIRO_OPERATOR_OVER;
+    }
+}
+
+static cairo_format_t
+_cairo_format_from_qimage_format (QImage::Format fmt)
+{
+    switch (fmt) {
+    case QImage::Format_ARGB32_Premultiplied:
+        return CAIRO_FORMAT_ARGB32;
+    case QImage::Format_RGB32:
+        return CAIRO_FORMAT_RGB24;
+    case QImage::Format_Indexed8: // XXX not quite
+        return CAIRO_FORMAT_A8;
+#ifdef WORDS_BIGENDIAN
+    case QImage::Format_Mono:
+#else
+    case QImage::Format_MonoLSB:
+#endif
+        return CAIRO_FORMAT_A1;
+
+    case QImage::Format_Invalid:
+#ifdef WORDS_BIGENDIAN
+    case QImage::Format_MonoLSB:
+#else
+    case QImage::Format_Mono:
+#endif
+    case QImage::Format_ARGB32:
+    case QImage::Format_RGB16:
+    case QImage::Format_ARGB8565_Premultiplied:
+    case QImage::Format_RGB666:
+    case QImage::Format_ARGB6666_Premultiplied:
+    case QImage::Format_RGB555:
+    case QImage::Format_ARGB8555_Premultiplied:
+    case QImage::Format_RGB888:
+    case QImage::Format_RGB444:
+    case QImage::Format_ARGB4444_Premultiplied:
+    case QImage::NImageFormats:
+    default:
+	ASSERT_NOT_REACHED;
+        return (cairo_format_t) -1;
+    }
+}
+
+static QImage::Format
+_qimage_format_from_cairo_format (cairo_format_t fmt)
+{
+    switch (fmt) {
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FORMAT_ARGB32:
+        return QImage::Format_ARGB32_Premultiplied;
+    case CAIRO_FORMAT_RGB24:
+        return QImage::Format_RGB32;
+    case CAIRO_FORMAT_RGB16_565:
+        return QImage::Format_RGB16;
+    case CAIRO_FORMAT_A8:
+        return QImage::Format_Indexed8; // XXX not quite
+    case CAIRO_FORMAT_A1:
+#ifdef WORDS_BIGENDIAN
+        return QImage::Format_Mono; // XXX think we need to choose between this and LSB
+#else
+        return QImage::Format_MonoLSB;
+#endif
+    case CAIRO_FORMAT_RGB30:
+        return QImage::Format_Mono;
+    }
+
+    return QImage::Format_Mono;
+}
+
+static inline QMatrix
+_qmatrix_from_cairo_matrix (const cairo_matrix_t& m)
+{
+    return QMatrix(m.xx, m.yx, m.xy, m.yy, m.x0, m.y0);
+}
+
+/* Path conversion */
+typedef struct _qpainter_path_transform {
+    QPainterPath path;
+    const cairo_matrix_t *ctm_inverse;
+} qpainter_path_data;
+
+/* cairo path -> execute in context */
+static cairo_status_t
+_cairo_path_to_qpainterpath_move_to (void *closure, const cairo_point_t *point)
+{
+    qpainter_path_data *pdata = static_cast <qpainter_path_data *> (closure);
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (pdata->ctm_inverse)
+        cairo_matrix_transform_point (pdata->ctm_inverse, &x, &y);
+
+    pdata->path.moveTo(x, y);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_to_qpainterpath_line_to (void *closure, const cairo_point_t *point)
+{
+    qpainter_path_data *pdata = static_cast <qpainter_path_data *> (closure);
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (pdata->ctm_inverse)
+        cairo_matrix_transform_point (pdata->ctm_inverse, &x, &y);
+
+    pdata->path.lineTo(x, y);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_to_qpainterpath_curve_to (void *closure, const cairo_point_t *p0, const cairo_point_t *p1, const cairo_point_t *p2)
+{
+    qpainter_path_data *pdata = static_cast <qpainter_path_data *> (closure);
+    double x0 = _cairo_fixed_to_double (p0->x);
+    double y0 = _cairo_fixed_to_double (p0->y);
+    double x1 = _cairo_fixed_to_double (p1->x);
+    double y1 = _cairo_fixed_to_double (p1->y);
+    double x2 = _cairo_fixed_to_double (p2->x);
+    double y2 = _cairo_fixed_to_double (p2->y);
+
+    if (pdata->ctm_inverse) {
+        cairo_matrix_transform_point (pdata->ctm_inverse, &x0, &y0);
+        cairo_matrix_transform_point (pdata->ctm_inverse, &x1, &y1);
+        cairo_matrix_transform_point (pdata->ctm_inverse, &x2, &y2);
+    }
+
+    pdata->path.cubicTo (x0, y0, x1, y1, x2, y2);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_to_qpainterpath_close_path (void *closure)
+{
+    qpainter_path_data *pdata = static_cast <qpainter_path_data *> (closure);
+
+    pdata->path.closeSubpath();
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static QPainterPath
+path_to_qt (const cairo_path_fixed_t *path,
+	    const cairo_matrix_t *ctm_inverse = NULL)
+{
+    qpainter_path_data data;
+    cairo_status_t status;
+
+    if (ctm_inverse && _cairo_matrix_is_identity (ctm_inverse))
+	ctm_inverse = NULL;
+    data.ctm_inverse = ctm_inverse;
+
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_path_to_qpainterpath_move_to,
+					  _cairo_path_to_qpainterpath_line_to,
+					  _cairo_path_to_qpainterpath_curve_to,
+					  _cairo_path_to_qpainterpath_close_path,
+					  &data);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    return data.path;
+}
+
+static inline QPainterPath
+path_to_qt (const cairo_path_fixed_t *path,
+	    cairo_fill_rule_t fill_rule,
+	    cairo_matrix_t *ctm_inverse = NULL)
+{
+    QPainterPath qpath = path_to_qt (path, ctm_inverse);
+
+    qpath.setFillRule (fill_rule == CAIRO_FILL_RULE_WINDING ?
+			Qt::WindingFill :
+			Qt::OddEvenFill);
+
+    return qpath;
+}
+
+/*
+ * Surface backend methods
+ */
+static cairo_surface_t *
+_cairo_qt_surface_create_similar (void *abstract_surface,
+				  cairo_content_t content,
+				  int width,
+				  int height)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+    bool use_pixmap;
+
+    D(fprintf(stderr, "q[%p] create_similar: %d %d [%d] -> ", abstract_surface, width, height, content));
+
+    use_pixmap = qs->image == NULL;
+    if (use_pixmap) {
+	switch (content) {
+	case CAIRO_CONTENT_ALPHA:
+	    use_pixmap = FALSE;
+	    break;
+	case CAIRO_CONTENT_COLOR:
+	    break;
+	case CAIRO_CONTENT_COLOR_ALPHA:
+	    use_pixmap = ! _qpixmaps_have_no_alpha;
+	    break;
+	}
+    }
+
+    if (use_pixmap) {
+	cairo_surface_t *result =
+	    cairo_qt_surface_create_with_qpixmap (content, width, height);
+
+	/* XXX result->content is always content. ??? */
+	if (result->content == content) {
+	    D(fprintf(stderr, "qpixmap content: %d\n", content));
+	    return result;
+	}
+
+	_qpixmaps_have_no_alpha = TRUE;
+	cairo_surface_destroy (result);
+    }
+
+    D(fprintf (stderr, "qimage\n"));
+    return cairo_qt_surface_create_with_qimage
+	(_cairo_format_from_content (content), width, height);
+}
+
+static cairo_status_t
+_cairo_qt_surface_finish (void *abstract_surface)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] finish\n", abstract_surface));
+
+    /* Only delete p if we created it */
+    if (qs->image || qs->pixmap)
+        delete qs->p;
+    else
+	qs->p->restore ();
+
+    if (qs->image_equiv)
+        cairo_surface_destroy (qs->image_equiv);
+
+    _cairo_surface_clipper_reset (&qs->clipper);
+
+    if (qs->image)
+        delete qs->image;
+
+    if (qs->pixmap)
+        delete qs->pixmap;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_qimg_destroy (void *closure)
+{
+    QImage *qimg = (QImage *) closure;
+    delete qimg;
+}
+
+static cairo_status_t
+_cairo_qt_surface_acquire_source_image (void *abstract_surface,
+					cairo_image_surface_t **image_out,
+					void **image_extra)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] acquire_source_image\n", abstract_surface));
+
+    *image_extra = NULL;
+
+    if (qs->image_equiv) {
+        *image_out = (cairo_image_surface_t*)
+                     cairo_surface_reference (qs->image_equiv);
+
+        return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (qs->pixmap) {
+        QImage *qimg = new QImage(qs->pixmap->toImage());
+	cairo_surface_t *image;
+	cairo_status_t status;
+
+        image = cairo_image_surface_create_for_data (qimg->bits(),
+						     _cairo_format_from_qimage_format (qimg->format()),
+						     qimg->width(), qimg->height(),
+						     qimg->bytesPerLine());
+
+	status = _cairo_user_data_array_set_data (&image->user_data,
+						  (const cairo_user_data_key_t *)&_qimg_destroy,
+						  qimg,
+						  _qimg_destroy);
+	if (status) {
+	    cairo_surface_destroy (image);
+	    return status;
+	}
+
+	*image_out = (cairo_image_surface_t *) image;
+        return CAIRO_STATUS_SUCCESS;
+    }
+
+    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+}
+
+static void
+_cairo_qt_surface_release_source_image (void *abstract_surface,
+					cairo_image_surface_t *image,
+					void *image_extra)
+{
+    //cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] release_source_image\n", abstract_surface));
+
+    cairo_surface_destroy (&image->base);
+}
+
+struct _qimage_surface {
+    cairo_image_surface_t image;
+    QImage *qimg;
+};
+
+static cairo_surface_t *
+map_qimage_to_image (QImage *qimg, const cairo_rectangle_int_t *extents)
+{
+    struct _qimage_surface  *surface;
+    pixman_image_t *pixman_image;
+    pixman_format_code_t pixman_format;
+    uint8_t *data;
+
+    if (qimg == NULL)
+        return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    switch (qimg->format()) {
+    case QImage::Format_ARGB32_Premultiplied:
+	pixman_format = PIXMAN_a8r8g8b8;
+	break;
+    case QImage::Format_RGB32:
+	pixman_format = PIXMAN_x8r8g8b8;
+	break;
+    case QImage::Format_Indexed8: // XXX not quite
+	pixman_format = PIXMAN_a8;
+	break;
+#ifdef WORDS_BIGENDIAN
+    case QImage::Format_Mono:
+#else
+    case QImage::Format_MonoLSB:
+#endif
+	pixman_format = PIXMAN_a1;
+	break;
+
+    case QImage::Format_Invalid:
+#ifdef WORDS_BIGENDIAN
+    case QImage::Format_MonoLSB:
+#else
+    case QImage::Format_Mono:
+#endif
+    case QImage::Format_ARGB32:
+    case QImage::Format_RGB16:
+    case QImage::Format_ARGB8565_Premultiplied:
+    case QImage::Format_RGB666:
+    case QImage::Format_ARGB6666_Premultiplied:
+    case QImage::Format_RGB555:
+    case QImage::Format_ARGB8555_Premultiplied:
+    case QImage::Format_RGB888:
+    case QImage::Format_RGB444:
+    case QImage::Format_ARGB4444_Premultiplied:
+    case QImage::NImageFormats:
+    default:
+	delete qimg;
+	return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_FORMAT);
+    }
+
+    data = qimg->bits();
+    data += extents->y * qimg->bytesPerLine();
+    data += extents->x * PIXMAN_FORMAT_BPP (pixman_format) / 8;
+
+    pixman_image = pixman_image_create_bits (pixman_format,
+					     extents->width,
+					     extents->height,
+					     (uint32_t *)data,
+					     qimg->bytesPerLine());
+    if (pixman_image == NULL) {
+	delete qimg;
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    surface = (struct _qimage_surface *) _cairo_malloc (sizeof(*surface));
+    if (unlikely (surface == NULL)) {
+	pixman_image_unref (pixman_image);
+	delete qimg;
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_image_surface_init (&surface->image, pixman_image, pixman_format);
+    surface->qimg = qimg;
+
+    cairo_surface_set_device_offset (&surface->image.base,
+				     -extents->x, -extents->y);
+
+    return &surface->image.base;
+}
+
+static cairo_image_surface_t *
+_cairo_qt_surface_map_to_image (void *abstract_surface,
+				const cairo_rectangle_int_t *extents)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+    QImage *qimg = NULL;
+
+    D(fprintf(stderr, "q[%p] acquire_dest_image\n", abstract_surface));
+
+    if (qs->image_equiv)
+	return _cairo_image_surface_map_to_image (qs->image_equiv,
+						  extents);
+
+    QPoint offset;
+
+    if (qs->pixmap) {
+        qimg = new QImage(qs->pixmap->toImage());
+    } else {
+        // Try to figure out what kind of QPaintDevice we have, and
+        // how we can grab an image from it
+        QPaintDevice *pd = qs->p->device();
+	if (!pd)
+	    return (cairo_image_surface_t *) _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+	QPaintDevice *rpd = QPainter::redirected(pd, &offset);
+	if (rpd)
+	    pd = rpd;
+
+        if (pd->devType() == QInternal::Image) {
+            qimg = new QImage(((QImage*) pd)->copy());
+        } else if (pd->devType() == QInternal::Pixmap) {
+            qimg = new QImage(((QPixmap*) pd)->toImage());
+        } else if (pd->devType() == QInternal::Widget) {
+            qimg = new QImage(QPixmap::grabWindow(((QWidget*)pd)->winId()).toImage());
+        }
+    }
+
+    return (cairo_image_surface_t *) map_qimage_to_image (qimg, extents);
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_unmap_image (void *abstract_surface,
+			       cairo_image_surface_t *image)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] release_dest_image\n", abstract_surface));
+
+    if (!qs->image_equiv) {
+	struct _qimage_surface  *qimage = (struct _qimage_surface  *)image;
+
+        // XXX should I be using setBackgroundMode here instead of setCompositionMode?
+        if (qs->supports_porter_duff)
+            qs->p->setCompositionMode (QPainter::CompositionMode_Source);
+
+        qs->p->drawImage ((int)qimage->image.base.device_transform.x0,
+			  (int)qimage->image.base.device_transform.y0,
+			  *qimage->qimg,
+			  (int)qimage->image.base.device_transform.x0,
+			  (int)qimage->image.base.device_transform.y0,
+			  (int)qimage->image.width,
+			  (int)qimage->image.height);
+
+        if (qs->supports_porter_duff)
+            qs->p->setCompositionMode (QPainter::CompositionMode_SourceOver);
+
+	delete qimage->qimg;
+    }
+
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_qt_surface_get_extents (void *abstract_surface,
+			       cairo_rectangle_int_t *extents)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    extents->x = qs->window.x();
+    extents->y = qs->window.y();
+    extents->width  = qs->window.width();
+    extents->height = qs->window.height();
+
+    return TRUE;
+}
+
+static cairo_status_t
+_cairo_qt_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+					       cairo_path_fixed_t *path,
+					       cairo_fill_rule_t fill_rule,
+					       double tolerance,
+					       cairo_antialias_t antialias)
+{
+    cairo_qt_surface_t *qs = cairo_container_of (clipper,
+						 cairo_qt_surface_t,
+						 clipper);
+
+    if (path == NULL) {
+        if (qs->pixmap || qs->image) {
+            // we own p
+            qs->p->setClipping (false);
+        } else {
+            qs->p->restore ();
+            qs->p->save ();
+        }
+    } else {
+	// XXX Antialiasing is ignored
+	qs->p->setClipPath (path_to_qt (path, fill_rule), Qt::IntersectClip);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_qt_surface_set_clip_region (cairo_qt_surface_t *qs,
+				   const cairo_region_t *clip_region)
+{
+    _cairo_surface_clipper_reset (&qs->clipper);
+
+    if (clip_region == NULL) {
+        // How the clip path is reset depends on whether we own p or not
+        if (qs->pixmap || qs->image) {
+            // we own p
+            qs->p->setClipping (false);
+        } else {
+            qs->p->restore ();
+            qs->p->save ();
+        }
+    } else {
+	QRegion qr;
+	int num_rects = cairo_region_num_rectangles (clip_region);
+	for (int i = 0; i < num_rects; ++i) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (clip_region, i, &rect);
+
+	    QRect r(rect.x, rect.y, rect.width, rect.height);
+	    qr = qr.unite(r);
+	}
+
+	qs->p->setClipRegion (qr, Qt::IntersectClip);
+    }
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_set_clip (cairo_qt_surface_t *qs,
+			    const cairo_clip_t *clip)
+{
+    cairo_int_status_t status;
+
+    D(fprintf(stderr, "q[%p] intersect_clip_path %s\n", abstract_surface, path ? "(path)" : "(clear)"));
+
+    if (clip == NULL) {
+	_cairo_surface_clipper_reset (&qs->clipper);
+        // How the clip path is reset depends on whether we own p or not
+        if (qs->pixmap || qs->image) {
+            // we own p
+            qs->p->setClipping (false);
+        } else {
+            qs->p->restore ();
+            qs->p->save ();
+        }
+
+        return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+#if ENABLE_FAST_CLIP
+    // Qt will implicitly enable clipping, and will use ReplaceClip
+    // instead of IntersectClip if clipping was disabled before
+
+    // Note: Qt is really bad at dealing with clip paths.  It doesn't
+    // seem to usefully recognize rectangular paths, instead going down
+    // extremely slow paths whenever a clip path is set.  So,
+    // we do a bunch of work here to try to get rectangles or regions
+    // down to Qt for clipping.
+
+    cairo_region_t *clip_region = NULL;
+
+    status = _cairo_clip_get_region (clip, &clip_region);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	// We weren't able to extract a region from the traps.
+	// Just hand the path down to QPainter.
+	status = (cairo_int_status_t)
+	    _cairo_surface_clipper_set_clip (&qs->clipper, clip);
+    } else if (status == CAIRO_INT_STATUS_SUCCESS) {
+	_cairo_qt_surface_set_clip_region (qs, clip_region);
+	status = CAIRO_INT_STATUS_SUCCESS;
+    }
+#else
+    status = (cairo_int_status_t)
+	_cairo_surface_clipper_set_clip (&qs->clipper, clip);
+#endif
+
+    return status;
+}
+
+/*
+ * Brush conversion
+ */
+
+struct PatternToBrushConverter {
+    PatternToBrushConverter (const cairo_pattern_t *pattern)
+    __attribute__ ((noinline)) :
+	mAcquiredImageParent(0),
+	mAcquiredImage(0),
+	mAcquiredImageExtra(0)
+    {
+	if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
+	    cairo_solid_pattern_t *solid = (cairo_solid_pattern_t*) pattern;
+	    QColor color;
+	    color.setRgbF(solid->color.red,
+			  solid->color.green,
+			  solid->color.blue,
+			  solid->color.alpha);
+
+	    mBrush = QBrush(color);
+	} else if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    cairo_surface_pattern_t *spattern = (cairo_surface_pattern_t*) pattern;
+	    cairo_surface_t *surface = spattern->surface;
+
+	    if (surface->type == CAIRO_SURFACE_TYPE_QT) {
+		cairo_qt_surface_t *qs = (cairo_qt_surface_t*) surface;
+
+		if (qs->image) {
+		    mBrush = QBrush(*qs->image);
+		} else if (qs->pixmap) {
+		    mBrush = QBrush(*qs->pixmap);
+		} else {
+		    // do something smart
+		    mBrush = QBrush(0xff0000ff);
+		}
+	    } else {
+		cairo_image_surface_t *isurf = NULL;
+
+		if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
+		    isurf = (cairo_image_surface_t*) surface;
+		} else {
+		    void *image_extra;
+
+		    if (_cairo_surface_acquire_source_image (surface, &isurf, &image_extra) == CAIRO_STATUS_SUCCESS) {
+			mAcquiredImageParent = surface;
+			mAcquiredImage = isurf;
+			mAcquiredImageExtra = image_extra;
+		    } else {
+			isurf = NULL;
+		    }
+		}
+
+		if (isurf) {
+		    mBrush = QBrush (QImage ((const uchar *) isurf->data,
+						 isurf->width,
+						 isurf->height,
+						 isurf->stride,
+						 _qimage_format_from_cairo_format (isurf->format)));
+		} else {
+		    mBrush = QBrush(0x0000ffff);
+		}
+	    }
+	} else if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR ||
+		   pattern->type == CAIRO_PATTERN_TYPE_RADIAL)
+	{
+	    QGradient *grad;
+	    cairo_bool_t reverse_stops = FALSE;
+	    cairo_bool_t emulate_reflect = FALSE;
+	    double offset = 0.0;
+
+	    cairo_extend_t extend = pattern->extend;
+
+	    cairo_gradient_pattern_t *gpat = (cairo_gradient_pattern_t *) pattern;
+
+	    if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR) {
+		cairo_linear_pattern_t *lpat = (cairo_linear_pattern_t *) pattern;
+		grad = new QLinearGradient (lpat->pd1.x, lpat->pd1.y,
+					    lpat->pd2.x, lpat->pd2.y);
+	    } else if (pattern->type == CAIRO_PATTERN_TYPE_RADIAL) {
+		cairo_radial_pattern_t *rpat = (cairo_radial_pattern_t *) pattern;
+
+		/* Based on the SVG surface code */
+
+		cairo_circle_double_t *c0, *c1;
+		double x0, y0, r0, x1, y1, r1;
+
+		if (rpat->cd1.radius < rpat->cd2.radius) {
+		    c0 = &rpat->cd1;
+		    c1 = &rpat->cd2;
+		    reverse_stops = FALSE;
+		} else {
+		    c0 = &rpat->cd2;
+		    c1 = &rpat->cd1;
+		    reverse_stops = TRUE;
+		}
+
+		x0 = c0->center.x;
+		y0 = c0->center.y;
+		r0 = c0->radius;
+		x1 = c1->center.x;
+		y1 = c1->center.y;
+		r1 = c1->radius;
+
+		if (r0 == r1) {
+		    grad = new QRadialGradient (x1, y1, r1, x1, y1);
+		} else {
+		    double fx = (r1 * x0 - r0 * x1) / (r1 - r0);
+		    double fy = (r1 * y0 - r0 * y1) / (r1 - r0);
+
+		    /* QPainter doesn't support the inner circle and use instead a gradient focal.
+		     * That means we need to emulate the cairo behaviour by processing the
+		     * cairo gradient stops.
+		     * The CAIRO_EXTENT_NONE and CAIRO_EXTENT_PAD modes are quite easy to handle,
+		     * it's just a matter of stop position translation and calculation of
+		     * the corresponding SVG radial gradient focal.
+		     * The CAIRO_EXTENT_REFLECT and CAIRO_EXTEND_REPEAT modes require to compute a new
+		     * radial gradient, with an new outer circle, equal to r1 - r0 in the CAIRO_EXTEND_REPEAT
+		     * case, and 2 * (r1 - r0) in the CAIRO_EXTENT_REFLECT case, and a new gradient stop
+		     * list that maps to the original cairo stop list.
+		     */
+		    if ((extend == CAIRO_EXTEND_REFLECT || extend == CAIRO_EXTEND_REPEAT) && r0 > 0.0) {
+			double r_org = r1;
+			double r, x, y;
+
+			if (extend == CAIRO_EXTEND_REFLECT) {
+			    r1 = 2 * r1 - r0;
+			    emulate_reflect = TRUE;
+			}
+
+			offset = fmod (r1, r1 - r0) / (r1 - r0) - 1.0;
+			r = r1 - r0;
+
+			/* New position of outer circle. */
+			x = r * (x1 - fx) / r_org + fx;
+			y = r * (y1 - fy) / r_org + fy;
+
+			x1 = x;
+			y1 = y;
+			r1 = r;
+			r0 = 0.0;
+		    } else {
+			offset = r0 / r1;
+		    }
+
+		    grad = new QRadialGradient (x1, y1, r1, fx, fy);
+
+		    if (extend == CAIRO_EXTEND_NONE && r0 != 0.0)
+			grad->setColorAt (r0 / r1, Qt::transparent);
+		}
+	    }
+
+	    switch (extend) {
+		case CAIRO_EXTEND_NONE:
+		case CAIRO_EXTEND_PAD:
+		    grad->setSpread(QGradient::PadSpread);
+
+		    grad->setColorAt (0.0, Qt::transparent);
+		    grad->setColorAt (1.0, Qt::transparent);
+		    break;
+
+		case CAIRO_EXTEND_REFLECT:
+		    grad->setSpread(QGradient::ReflectSpread);
+		    break;
+
+		case CAIRO_EXTEND_REPEAT:
+		    grad->setSpread(QGradient::RepeatSpread);
+		    break;
+	    }
+
+	    for (unsigned int i = 0; i < gpat->n_stops; i++) {
+		int index = i;
+		if (reverse_stops)
+		    index = gpat->n_stops - i - 1;
+
+		double offset = gpat->stops[i].offset;
+		QColor color;
+		color.setRgbF (gpat->stops[i].color.red,
+			       gpat->stops[i].color.green,
+			       gpat->stops[i].color.blue,
+			       gpat->stops[i].color.alpha);
+
+		if (emulate_reflect) {
+		    offset = offset / 2.0;
+		    grad->setColorAt (1.0 - offset, color);
+		}
+
+		grad->setColorAt (offset, color);
+	    }
+
+	    mBrush = QBrush(*grad);
+
+	    delete grad;
+	}
+
+	if (mBrush.style() != Qt::NoBrush  &&
+            pattern->type != CAIRO_PATTERN_TYPE_SOLID &&
+            ! _cairo_matrix_is_identity (&pattern->matrix))
+	{
+	    cairo_matrix_t pm = pattern->matrix;
+	    cairo_status_t status = cairo_matrix_invert (&pm);
+	    assert (status == CAIRO_STATUS_SUCCESS);
+	    mBrush.setMatrix (_qmatrix_from_cairo_matrix (pm));
+	}
+    }
+
+    ~PatternToBrushConverter () __attribute__ ((noinline)){
+	if (mAcquiredImageParent)
+	    _cairo_surface_release_source_image (mAcquiredImageParent, mAcquiredImage, mAcquiredImageExtra);
+    }
+
+    operator QBrush& () {
+	return mBrush;
+    }
+
+    QBrush mBrush;
+
+    private:
+    cairo_surface_t *mAcquiredImageParent;
+    cairo_image_surface_t *mAcquiredImage;
+    void *mAcquiredImageExtra;
+};
+
+struct PatternToPenConverter {
+    PatternToPenConverter (const cairo_pattern_t *source,
+                           const cairo_stroke_style_t *style) :
+        mBrushConverter(source)
+    {
+        Qt::PenJoinStyle join = Qt::MiterJoin;
+        Qt::PenCapStyle cap = Qt::SquareCap;
+
+        switch (style->line_cap) {
+        case CAIRO_LINE_CAP_BUTT:
+            cap = Qt::FlatCap;
+            break;
+        case CAIRO_LINE_CAP_ROUND:
+            cap = Qt::RoundCap;
+            break;
+        case CAIRO_LINE_CAP_SQUARE:
+            cap = Qt::SquareCap;
+            break;
+        }
+
+        switch (style->line_join) {
+        case CAIRO_LINE_JOIN_MITER:
+            join = Qt::MiterJoin;
+            break;
+        case CAIRO_LINE_JOIN_ROUND:
+            join = Qt::RoundJoin;
+            break;
+        case CAIRO_LINE_JOIN_BEVEL:
+            join = Qt::BevelJoin;
+            break;
+        }
+
+        mPen = QPen(mBrushConverter, style->line_width, Qt::SolidLine, cap, join);
+        mPen.setMiterLimit (style->miter_limit);
+
+        if (style->dash && style->num_dashes) {
+            Qt::PenStyle pstyle = Qt::NoPen;
+
+            if (style->num_dashes == 2) {
+                if ((style->dash[0] == style->line_width &&
+                        style->dash[1] == style->line_width && style->line_width <= 2.0) ||
+                    (style->dash[0] == 0.0 &&
+                        style->dash[1] == style->line_width * 2 && cap == Qt::RoundCap))
+                {
+                    pstyle = Qt::DotLine;
+                } else if (style->dash[0] == style->line_width * DASH_LENGTH &&
+                           style->dash[1] == style->line_width * DASH_LENGTH &&
+                           cap == Qt::FlatCap)
+                {
+                    pstyle = Qt::DashLine;
+                }
+            }
+
+            if (pstyle != Qt::NoPen) {
+                mPen.setStyle(pstyle);
+                return;
+            }
+
+            unsigned int odd_dash = style->num_dashes % 2;
+
+            QVector<qreal> dashes (odd_dash ? style->num_dashes * 2 : style->num_dashes);
+            for (unsigned int i = 0; i < odd_dash+1; i++) {
+                for (unsigned int j = 0; j < style->num_dashes; j++) {
+                    // In Qt, the dash lengths are given in units of line width, whereas
+                    // in cairo, they are in user-space units.  We'll always apply the CTM,
+                    // so all we have to do here is divide cairo's dash lengths by the line
+                    // width.
+                    dashes.append (style->dash[j] / style->line_width);
+                }
+            }
+
+            mPen.setDashPattern(dashes);
+            mPen.setDashOffset(style->dash_offset / style->line_width);
+        }
+    }
+
+    ~PatternToPenConverter() { }
+
+    operator QPen& () {
+        return mPen;
+    }
+
+    QPen mPen;
+    PatternToBrushConverter mBrushConverter;
+};
+
+/*
+ * Core drawing operations
+ */
+
+static bool
+_cairo_qt_fast_fill (cairo_qt_surface_t *qs,
+		     const cairo_pattern_t *source,
+		     const cairo_path_fixed_t *path = NULL,
+		     cairo_fill_rule_t fill_rule = CAIRO_FILL_RULE_WINDING,
+		     double tolerance = 0.0,
+		     cairo_antialias_t antialias = CAIRO_ANTIALIAS_NONE)
+{
+#if ENABLE_FAST_FILL
+    QImage *qsSrc_image = NULL;
+    QPixmap *qsSrc_pixmap = NULL;
+    std::auto_ptr<QImage> qsSrc_image_d;
+
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *spattern = (cairo_surface_pattern_t*) source;
+	if (spattern->surface->type == CAIRO_SURFACE_TYPE_QT) {
+	    cairo_qt_surface_t *p = (cairo_qt_surface_t*) spattern->surface;
+
+	    qsSrc_image = p->image;
+	    qsSrc_pixmap = p->pixmap;
+	} else if (spattern->surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
+	    cairo_image_surface_t *p = (cairo_image_surface_t*) spattern->surface;
+	    qsSrc_image = new QImage((const uchar*) p->data,
+				     p->width,
+				     p->height,
+				     p->stride,
+				     _qimage_format_from_cairo_format(p->format));
+	    qsSrc_image_d.reset(qsSrc_image);
+	}
+    }
+
+    if (!qsSrc_image && !qsSrc_pixmap)
+	return false;
+
+    // We can only drawTiledPixmap; there's no drawTiledImage
+    if (! qsSrc_pixmap &&
+	(source->extend == CAIRO_EXTEND_REPEAT ||
+	 source->extend == CAIRO_EXTEND_REFLECT))
+    {
+	return false;
+    }
+
+    QMatrix sourceMatrix = _qmatrix_from_cairo_matrix (source->matrix);
+
+    // We can draw this faster by clipping and calling drawImage/drawPixmap.
+    // Use our own clipping function so that we can get the
+    // region handling to end up with the fastest possible clip.
+    //
+    // XXX Antialiasing will fail pretty hard here, since we can't clip with AA
+    // with QPainter.
+    qs->p->save();
+
+    if (path) {
+	cairo_int_status_t status;
+
+	cairo_clip_t clip, old_clip = qs->clipper.clip;
+
+	qs->clipper.clip = _cairo_clip_copy (&clip);
+	status = (cairo_int_status_t) _cairo_clip_clip (&clip,
+							path,
+							fill_rule,
+							tolerance,
+							antialias);
+	if (unlikely (status)) {
+	    qs->p->restore();
+	    return false;
+	}
+
+	status = _cairo_qt_surface_set_clip (qs, &clip);
+	if (unlikely (status)) {
+	    qs->p->restore();
+	    return false;
+	}
+
+	_cairo_clip_reset (&clip);
+	qs->clipper.clip = old_clip;
+    }
+
+    qs->p->setWorldMatrix (sourceMatrix.inverted(), true);
+
+    switch (source->extend) {
+    case CAIRO_EXTEND_REPEAT:
+    // XXX handle reflect by tiling 4 times first
+    case CAIRO_EXTEND_REFLECT: {
+            assert (qsSrc_pixmap);
+
+            // Render the tiling to cover the entire destination window (because
+            // it'll be clipped).  Transform the window rect by the inverse
+            // of the current world transform so that the device coordinates
+            // end up as the right thing.
+            QRectF dest = qs->p->worldTransform().inverted().mapRect(QRectF(qs->window));
+            QPointF origin = sourceMatrix.map(QPointF(0.0, 0.0));
+
+            qs->p->drawTiledPixmap (dest, *qsSrc_pixmap, origin);
+        }
+        break;
+    case CAIRO_EXTEND_NONE:
+    case CAIRO_EXTEND_PAD: // XXX not exactly right, but good enough
+    default:
+        if (qsSrc_image)
+            qs->p->drawImage (0, 0, *qsSrc_image);
+        else if (qsSrc_pixmap)
+            qs->p->drawPixmap (0, 0, *qsSrc_pixmap);
+        break;
+    }
+
+    qs->p->restore();
+
+    return true;
+#else
+    return false;
+#endif
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_paint (void *abstract_surface,
+			 cairo_operator_t op,
+			 const cairo_pattern_t *source,
+			 const cairo_clip_t	       *clip)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+    cairo_int_status_t status;
+
+    D(fprintf(stderr, "q[%p] paint op:%s\n", abstract_surface, _opstr(op)));
+
+    if (! _op_is_supported (qs, op))
+	return _cairo_surface_fallback_paint (abstract_surface, op, source, clip);
+
+    status = _cairo_qt_surface_set_clip (qs, clip);
+    if (unlikely (status))
+	return status;
+
+    if (qs->supports_porter_duff)
+        qs->p->setCompositionMode (_qpainter_compositionmode_from_cairo_op (op));
+
+    if (! _cairo_qt_fast_fill (qs, source)) {
+	PatternToBrushConverter brush (source);
+        qs->p->fillRect (qs->window, brush);
+    }
+
+    if (qs->supports_porter_duff)
+        qs->p->setCompositionMode (QPainter::CompositionMode_SourceOver);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_fill (void *abstract_surface,
+			cairo_operator_t op,
+			const cairo_pattern_t *source,
+			const cairo_path_fixed_t *path,
+			cairo_fill_rule_t fill_rule,
+			double tolerance,
+			cairo_antialias_t antialias,
+			const cairo_clip_t *clip)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] fill op:%s\n", abstract_surface, _opstr(op)));
+
+    if (! _op_is_supported (qs, op))
+	return _cairo_surface_fallback_fill (abstract_surface, op,
+					     source, path, fill_rule,
+					     tolerance, antialias, clip);
+
+    cairo_int_status_t status = _cairo_qt_surface_set_clip (qs, clip);
+    if (unlikely (status))
+	return status;
+
+    if (qs->supports_porter_duff)
+        qs->p->setCompositionMode (_qpainter_compositionmode_from_cairo_op (op));
+
+    // XXX Qt4.3, 4.4 misrenders some complex paths if antialiasing is
+    // enabled
+    //qs->p->setRenderHint (QPainter::Antialiasing, antialias == CAIRO_ANTIALIAS_NONE ? false : true);
+    qs->p->setRenderHint (QPainter::SmoothPixmapTransform, source->filter != CAIRO_FILTER_FAST);
+
+    if (! _cairo_qt_fast_fill (qs, source,
+			       path, fill_rule, tolerance, antialias))
+    {
+	PatternToBrushConverter brush(source);
+	qs->p->fillPath (path_to_qt (path, fill_rule), brush);
+    }
+
+    if (qs->supports_porter_duff)
+        qs->p->setCompositionMode (QPainter::CompositionMode_SourceOver);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_stroke (void *abstract_surface,
+			  cairo_operator_t op,
+			  const cairo_pattern_t *source,
+			  const cairo_path_fixed_t *path,
+			  const cairo_stroke_style_t *style,
+			  const cairo_matrix_t *ctm,
+			  const cairo_matrix_t *ctm_inverse,
+			  double tolerance,
+			  cairo_antialias_t antialias,
+			  const cairo_clip_t *clip)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] stroke op:%s\n", abstract_surface, _opstr(op)));
+
+    if (! _op_is_supported (qs, op))
+	return _cairo_surface_fallback_stroke (abstract_surface, op,
+					       source, path, style, ctm,
+					       ctm_inverse, tolerance,
+					       antialias, clip);
+
+    cairo_int_status_t int_status = _cairo_qt_surface_set_clip (qs, clip);
+    if (unlikely (int_status))
+	return int_status;
+
+    QMatrix savedMatrix = qs->p->worldMatrix();
+
+    if (qs->supports_porter_duff)
+        qs->p->setCompositionMode (_qpainter_compositionmode_from_cairo_op (op));
+
+    qs->p->setWorldMatrix (_qmatrix_from_cairo_matrix (*ctm), true);
+    // XXX Qt4.3, 4.4 misrenders some complex paths if antialiasing is
+    // enabled
+    //qs->p->setRenderHint (QPainter::Antialiasing, antialias == CAIRO_ANTIALIAS_NONE ? false : true);
+    qs->p->setRenderHint (QPainter::SmoothPixmapTransform, source->filter != CAIRO_FILTER_FAST);
+
+    PatternToPenConverter pen(source, style);
+
+    qs->p->setPen(pen);
+    qs->p->drawPath(path_to_qt (path, ctm_inverse));
+    qs->p->setPen(Qt::black);
+
+    qs->p->setWorldMatrix (savedMatrix, false);
+
+    if (qs->supports_porter_duff)
+        qs->p->setCompositionMode (QPainter::CompositionMode_SourceOver);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_show_glyphs (void *abstract_surface,
+			       cairo_operator_t op,
+			       const cairo_pattern_t *source,
+			       cairo_glyph_t *glyphs,
+			       int num_glyphs,
+			       cairo_scaled_font_t *scaled_font,
+			       const cairo_clip_t *clip)
+{
+#if ((QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)) || defined(QT_GLYPHS_API_BACKPORT)) && 0
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    // pick out the colour to use from the cairo source
+    cairo_solid_pattern_t *solid = (cairo_solid_pattern_t*) source;
+    cairo_scaled_glyph_t* glyph;
+    // documentation says you have to freeze the cache, but I don't believe it
+    _cairo_scaled_font_freeze_cache(scaled_font);
+
+    QColor tempColour(solid->color.red * 255, solid->color.green * 255, solid->color.blue * 255);
+    QVarLengthArray<QPointF> positions(num_glyphs);
+    QVarLengthArray<unsigned int> glyphss(num_glyphs);
+    FT_Face face = cairo_ft_scaled_font_lock_face (scaled_font);
+    const FT_Size_Metrics& ftMetrics = face->size->metrics;
+    QFont font(face->family_name);
+    font.setStyleStrategy(QFont::NoFontMerging);
+    font.setBold(face->style_flags & FT_STYLE_FLAG_BOLD);
+    font.setItalic(face->style_flags & FT_STYLE_FLAG_ITALIC);
+    font.setKerning(face->face_flags & FT_FACE_FLAG_KERNING);
+    font.setPixelSize(ftMetrics.y_ppem);
+    cairo_ft_scaled_font_unlock_face(scaled_font);
+    qs->p->setFont(font);
+    qs->p->setPen(tempColour);
+    for (int currentGlyph = 0; currentGlyph < num_glyphs; currentGlyph++) {
+        positions[currentGlyph].setX(glyphs[currentGlyph].x);
+        positions[currentGlyph].setY(glyphs[currentGlyph].y);
+        glyphss[currentGlyph] = glyphs[currentGlyph].index;
+    }
+    qt_draw_glyphs(qs->p, glyphss.data(), positions.data(), num_glyphs);
+    _cairo_scaled_font_thaw_cache(scaled_font);
+    return CAIRO_INT_STATUS_SUCCESS;
+#else
+    return _cairo_surface_fallback_glyphs (abstract_surface, op,
+					   source, glyphs, num_glyphs,
+					   scaled_font, clip);
+#endif
+}
+
+static cairo_int_status_t
+_cairo_qt_surface_mask (void *abstract_surface,
+			cairo_operator_t op,
+			const cairo_pattern_t *source,
+			const cairo_pattern_t *mask,
+			const cairo_clip_t	    *clip)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    D(fprintf(stderr, "q[%p] mask op:%s\n", abstract_surface, _opstr(op)));
+
+    if (qs->p && mask->type == CAIRO_PATTERN_TYPE_SOLID) {
+        cairo_solid_pattern_t *solid_mask = (cairo_solid_pattern_t *) mask;
+        cairo_int_status_t result;
+
+        qs->p->setOpacity (solid_mask->color.alpha);
+
+        result = _cairo_qt_surface_paint (abstract_surface, op, source, clip);
+
+        qs->p->setOpacity (1.0);
+
+        return result;
+    }
+
+    // otherwise skip for now
+    return _cairo_surface_fallback_mask (abstract_surface, op, source, mask, clip);
+}
+
+static cairo_status_t
+_cairo_qt_surface_mark_dirty (void *abstract_surface,
+			      int x, int y,
+			      int width, int height)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
+
+    if (qs->p && !(qs->image || qs->pixmap))
+	qs->p->save ();
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * Backend struct
+ */
+
+static const cairo_surface_backend_t cairo_qt_surface_backend = {
+    CAIRO_SURFACE_TYPE_QT,
+    _cairo_qt_surface_finish,
+
+    _cairo_default_context_create, /* XXX */
+
+    _cairo_qt_surface_create_similar,
+    NULL, /* similar image */
+    _cairo_qt_surface_map_to_image,
+    _cairo_qt_surface_unmap_image,
+
+    _cairo_surface_default_source,
+    _cairo_qt_surface_acquire_source_image,
+    _cairo_qt_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_qt_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    _cairo_qt_surface_mark_dirty,
+
+    _cairo_qt_surface_paint,
+    _cairo_qt_surface_mask,
+    _cairo_qt_surface_stroke,
+    _cairo_qt_surface_fill,
+    NULL, /* fill_stroke */
+    _cairo_qt_surface_show_glyphs
+};
+
+cairo_surface_t *
+cairo_qt_surface_create (QPainter *painter)
+{
+    cairo_qt_surface_t *qs;
+
+    qs = (cairo_qt_surface_t *) _cairo_malloc (sizeof(cairo_qt_surface_t));
+    if (qs == NULL)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    memset (qs, 0, sizeof(cairo_qt_surface_t));
+
+    _cairo_surface_init (&qs->base,
+			 &cairo_qt_surface_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA);
+
+    _cairo_surface_clipper_init (&qs->clipper,
+				 _cairo_qt_surface_clipper_intersect_clip_path);
+
+    qs->p = painter;
+    if (qs->p->paintEngine())
+        qs->supports_porter_duff = qs->p->paintEngine()->hasFeature(QPaintEngine::PorterDuff);
+    else
+        qs->supports_porter_duff = FALSE;
+
+    // Save so that we can always get back to the original state
+    qs->p->save();
+
+    qs->window = painter->window();
+
+    D(fprintf(stderr, "qpainter_surface_create: window: [%d %d %d %d] pd:%d\n",
+              qs->window.x(), qs->window.y(), qs->window.width(), qs->window.height(),
+              qs->supports_porter_duff));
+
+    return &qs->base;
+}
+
+cairo_surface_t *
+cairo_qt_surface_create_with_qimage (cairo_format_t format,
+				     int width,
+				     int height)
+{
+    cairo_qt_surface_t *qs;
+
+    qs = (cairo_qt_surface_t *) _cairo_malloc (sizeof(cairo_qt_surface_t));
+    if (qs == NULL)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    memset (qs, 0, sizeof(cairo_qt_surface_t));
+
+    _cairo_surface_init (&qs->base,
+			 &cairo_qt_surface_backend,
+			 NULL, /* device */
+			 _cairo_content_from_format (format));
+
+    _cairo_surface_clipper_init (&qs->clipper,
+				 _cairo_qt_surface_clipper_intersect_clip_path);
+
+
+    QImage *image = new QImage (width, height,
+				_qimage_format_from_cairo_format (format));
+
+    qs->image = image;
+
+    if (!image->isNull()) {
+        qs->p = new QPainter(image);
+        qs->supports_porter_duff = qs->p->paintEngine()->hasFeature(QPaintEngine::PorterDuff);
+    }
+
+    qs->image_equiv = cairo_image_surface_create_for_data (image->bits(),
+                                                           format,
+                                                           width, height,
+                                                           image->bytesPerLine());
+
+    qs->window = QRect(0, 0, width, height);
+
+    D(fprintf(stderr, "qpainter_surface_create: qimage: [%d %d %d %d] pd:%d\n",
+              qs->window.x(), qs->window.y(), qs->window.width(), qs->window.height(),
+              qs->supports_porter_duff));
+
+    return &qs->base;
+}
+
+cairo_surface_t *
+cairo_qt_surface_create_with_qpixmap (cairo_content_t content,
+				      int width,
+				      int height)
+{
+    cairo_qt_surface_t *qs;
+
+    if ((content & CAIRO_CONTENT_COLOR) == 0)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
+
+    qs = (cairo_qt_surface_t *) _cairo_malloc (sizeof(cairo_qt_surface_t));
+    if (qs == NULL)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    memset (qs, 0, sizeof(cairo_qt_surface_t));
+
+    QPixmap *pixmap = new QPixmap (width, height);
+    if (pixmap == NULL) {
+	free (qs);
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    // By default, a QPixmap is opaque; however, if it's filled
+    // with a color with a transparency component, it is converted
+    // to a format that preserves transparency.
+    if (content == CAIRO_CONTENT_COLOR_ALPHA)
+	pixmap->fill(Qt::transparent);
+
+    _cairo_surface_init (&qs->base,
+			 &cairo_qt_surface_backend,
+			 NULL, /* device */
+			 content);
+
+    _cairo_surface_clipper_init (&qs->clipper,
+				 _cairo_qt_surface_clipper_intersect_clip_path);
+
+    qs->pixmap = pixmap;
+
+    if (!pixmap->isNull()) {
+        qs->p = new QPainter(pixmap);
+        qs->supports_porter_duff = qs->p->paintEngine()->hasFeature(QPaintEngine::PorterDuff);
+    }
+
+    qs->window = QRect(0, 0, width, height);
+
+    D(fprintf(stderr, "qpainter_surface_create: qpixmap: [%d %d %d %d] pd:%d\n",
+              qs->window.x(), qs->window.y(), qs->window.width(), qs->window.height(),
+              qs->supports_porter_duff));
+
+    return &qs->base;
+}
+
+/**
+ * _cairo_surface_is_qt:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is a #cairo_qt_surface_t
+ *
+ * Return value: True if the surface is an qt surface
+ **/
+static inline cairo_bool_t
+_cairo_surface_is_qt (cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_qt_surface_backend;
+}
+
+QPainter *
+cairo_qt_surface_get_qpainter (cairo_surface_t *surface)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t*) surface;
+
+    /* Throw an error for a non-qt surface */
+    if (! _cairo_surface_is_qt (surface)) {
+        _cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+        return NULL;
+    }
+
+    return qs->p;
+}
+
+QImage *
+cairo_qt_surface_get_qimage (cairo_surface_t *surface)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t*) surface;
+
+    /* Throw an error for a non-qt surface */
+    if (! _cairo_surface_is_qt (surface)) {
+        _cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+        return NULL;
+    }
+
+    return qs->image;
+}
+
+cairo_surface_t *
+cairo_qt_surface_get_image (cairo_surface_t *surface)
+{
+    cairo_qt_surface_t *qs = (cairo_qt_surface_t*) surface;
+
+    /* Throw an error for a non-qt surface */
+    if (! _cairo_surface_is_qt (surface)) {
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+    }
+
+    return qs->image_equiv;
+}
+
+/*
+ * TODO:
+ *
+ * - Figure out why QBrush isn't working with non-repeated images
+ *
+ * - Correct repeat mode; right now, every surface source is EXTEND_REPEAT
+ *   - implement EXTEND_NONE (?? probably need to clip to the extents of the source)
+ *   - implement EXTEND_REFLECT (create temporary and copy 4x, then EXTEND_REPEAT that)
+ *
+ * - stroke-image failure
+ *
+ * - Implement mask() with non-solid masks (probably will need to use a temporary and use IN)
+ *
+ * - Implement gradient sources
+ *
+ * - Make create_similar smarter -- create QPixmaps in more circumstances
+ *   (e.g. if the pixmap can have alpha)
+ *
+ * - Implement show_glyphs() in terms of Qt
+ *
+ */
diff --git a/libs/cairo-1.16.0/src/cairo-qt.h b/libs/cairo-1.16.0/src/cairo-qt.h
new file mode 100644
index 0000000..c20bbb1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-qt.h
@@ -0,0 +1,85 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Corporation.
+ *
+ * Contributor(s):
+ *      Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#ifndef CAIRO_QT_H
+#define CAIRO_QT_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_QT_SURFACE
+
+#include <QtGui/QImage>
+#include <QtGui/QPainter>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_qt_surface_create (QPainter *painter);
+
+cairo_public cairo_surface_t *
+cairo_qt_surface_create_with_qimage (cairo_format_t format,
+				     int width,
+				     int height);
+
+cairo_public cairo_surface_t *
+cairo_qt_surface_create_with_qpixmap (cairo_content_t content,
+				      int width,
+				      int height);
+
+cairo_public QPainter *
+cairo_qt_surface_get_qpainter (cairo_surface_t *surface);
+
+/* XXX needs hooking to generic surface layer, my vote is for
+cairo_public cairo_surface_t *
+cairo_surface_map_image (cairo_surface_t *surface);
+cairo_public void
+cairo_surface_unmap_image (cairo_surface_t *surface, cairo_surface_t *image);
+*/
+cairo_public cairo_surface_t *
+cairo_qt_surface_get_image (cairo_surface_t *surface);
+
+cairo_public QImage *
+cairo_qt_surface_get_qimage (cairo_surface_t *surface);
+
+CAIRO_END_DECLS
+
+#else /* CAIRO_HAS_QT_SURFACE */
+
+# error Cairo was not compiled with support for the Qt backend
+
+#endif /* CAIRO_HAS_QT_SURFACE */
+
+#endif /* CAIRO_QT_H */
diff --git a/libs/cairo-1.16.0/src/cairo-quartz-font.c b/libs/cairo-1.16.0/src/cairo-quartz-font.c
new file mode 100644
index 0000000..8cb7143
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-quartz-font.c
@@ -0,0 +1,878 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright � 2008 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation.
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#include "cairoint.h"
+
+#include <dlfcn.h>
+
+#include "cairo-image-surface-private.h"
+#include "cairo-quartz.h"
+#include "cairo-quartz-private.h"
+
+#include "cairo-error-private.h"
+
+/**
+ * SECTION:cairo-quartz-fonts
+ * @Title: Quartz (CGFont) Fonts
+ * @Short_Description: Font support via CGFont on OS X
+ * @See_Also: #cairo_font_face_t
+ *
+ * The Quartz font backend is primarily used to render text on Apple
+ * MacOS X systems.  The CGFont API is used for the internal
+ * implementation of the font backend methods.
+ **/
+
+/**
+ * CAIRO_HAS_QUARTZ_FONT:
+ *
+ * Defined if the Quartz font backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.6
+ **/
+
+static CFDataRef (*CGFontCopyTableForTagPtr) (CGFontRef font, uint32_t tag) = NULL;
+
+/* CreateWithFontName exists in 10.5, but not in 10.4; CreateWithName isn't public in 10.4 */
+static CGFontRef (*CGFontCreateWithFontNamePtr) (CFStringRef) = NULL;
+static CGFontRef (*CGFontCreateWithNamePtr) (const char *) = NULL;
+
+/* These aren't public before 10.5, and some have different names in 10.4 */
+static int (*CGFontGetUnitsPerEmPtr) (CGFontRef) = NULL;
+static bool (*CGFontGetGlyphAdvancesPtr) (CGFontRef, const CGGlyph[], size_t, int[]) = NULL;
+static bool (*CGFontGetGlyphBBoxesPtr) (CGFontRef, const CGGlyph[], size_t, CGRect[]) = NULL;
+static CGRect (*CGFontGetFontBBoxPtr) (CGFontRef) = NULL;
+
+/* Not public, but present */
+static void (*CGFontGetGlyphsForUnicharsPtr) (CGFontRef, const UniChar[], const CGGlyph[], size_t) = NULL;
+static void (*CGContextSetAllowsFontSmoothingPtr) (CGContextRef, bool) = NULL;
+static bool (*CGContextGetAllowsFontSmoothingPtr) (CGContextRef) = NULL;
+
+/* Not public in the least bit */
+static CGPathRef (*CGFontGetGlyphPathPtr) (CGFontRef fontRef, CGAffineTransform *textTransform, int unknown, CGGlyph glyph) = NULL;
+
+/* CTFontCreateWithGraphicsFont is not available until 10.5 */
+typedef const struct __CTFontDescriptor *CTFontDescriptorRef;
+static CTFontRef (*CTFontCreateWithGraphicsFontPtr) (CGFontRef, CGFloat, const CGAffineTransform*, CTFontDescriptorRef) = NULL;
+static CGPathRef (*CTFontCreatePathForGlyphPtr) (CTFontRef, CGGlyph, CGAffineTransform *) = NULL;
+
+/* CGFontGetHMetrics isn't public, but the other functions are public/present in 10.5 */
+typedef struct {
+    int ascent;
+    int descent;
+    int leading;
+} quartz_CGFontMetrics;
+static quartz_CGFontMetrics* (*CGFontGetHMetricsPtr) (CGFontRef fontRef) = NULL;
+static int (*CGFontGetAscentPtr) (CGFontRef fontRef) = NULL;
+static int (*CGFontGetDescentPtr) (CGFontRef fontRef) = NULL;
+static int (*CGFontGetLeadingPtr) (CGFontRef fontRef) = NULL;
+
+/* Not public anymore in 64-bits nor in 10.7 */
+static ATSFontRef (*FMGetATSFontRefFromFontPtr) (FMFont iFont) = NULL;
+
+static cairo_bool_t _cairo_quartz_font_symbol_lookup_done = FALSE;
+static cairo_bool_t _cairo_quartz_font_symbols_present = FALSE;
+
+/* Defined in 10.11 */
+#define CGGLYPH_MAX ((CGGlyph) 0xFFFE) /* kCGFontIndexMax */
+#define CGGLYPH_INVALID ((CGGlyph) 0xFFFF) /* kCGFontIndexInvalid */
+
+static void
+quartz_font_ensure_symbols(void)
+{
+    if (_cairo_quartz_font_symbol_lookup_done)
+	return;
+
+    CGFontCopyTableForTagPtr = dlsym(RTLD_DEFAULT, "CGFontCopyTableForTag");
+
+    /* Look for the 10.5 versions first */
+    CGFontGetGlyphBBoxesPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphBBoxes");
+    if (!CGFontGetGlyphBBoxesPtr)
+	CGFontGetGlyphBBoxesPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphBoundingBoxes");
+
+    CGFontGetGlyphsForUnicharsPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphsForUnichars");
+    if (!CGFontGetGlyphsForUnicharsPtr)
+	CGFontGetGlyphsForUnicharsPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphsForUnicodes");
+
+    CGFontGetFontBBoxPtr = dlsym(RTLD_DEFAULT, "CGFontGetFontBBox");
+
+    /* We just need one of these two */
+    CGFontCreateWithFontNamePtr = dlsym(RTLD_DEFAULT, "CGFontCreateWithFontName");
+    CGFontCreateWithNamePtr = dlsym(RTLD_DEFAULT, "CGFontCreateWithName");
+
+    /* These have the same name in 10.4 and 10.5 */
+    CGFontGetUnitsPerEmPtr = dlsym(RTLD_DEFAULT, "CGFontGetUnitsPerEm");
+    CGFontGetGlyphAdvancesPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphAdvances");
+
+    CTFontCreateWithGraphicsFontPtr = dlsym(RTLD_DEFAULT, "CTFontCreateWithGraphicsFont");
+    CTFontCreatePathForGlyphPtr = dlsym(RTLD_DEFAULT, "CTFontCreatePathForGlyph");
+    if (!CTFontCreateWithGraphicsFontPtr || !CTFontCreatePathForGlyphPtr)
+	CGFontGetGlyphPathPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphPath");
+
+    CGFontGetHMetricsPtr = dlsym(RTLD_DEFAULT, "CGFontGetHMetrics");
+    CGFontGetAscentPtr = dlsym(RTLD_DEFAULT, "CGFontGetAscent");
+    CGFontGetDescentPtr = dlsym(RTLD_DEFAULT, "CGFontGetDescent");
+    CGFontGetLeadingPtr = dlsym(RTLD_DEFAULT, "CGFontGetLeading");
+
+    CGContextGetAllowsFontSmoothingPtr = dlsym(RTLD_DEFAULT, "CGContextGetAllowsFontSmoothing");
+    CGContextSetAllowsFontSmoothingPtr = dlsym(RTLD_DEFAULT, "CGContextSetAllowsFontSmoothing");
+
+    FMGetATSFontRefFromFontPtr = dlsym(RTLD_DEFAULT, "FMGetATSFontRefFromFont");
+
+    if ((CGFontCreateWithFontNamePtr || CGFontCreateWithNamePtr) &&
+	CGFontGetGlyphBBoxesPtr &&
+	CGFontGetGlyphsForUnicharsPtr &&
+	CGFontGetUnitsPerEmPtr &&
+	CGFontGetGlyphAdvancesPtr &&
+	((CTFontCreateWithGraphicsFontPtr && CTFontCreatePathForGlyphPtr) || CGFontGetGlyphPathPtr) &&
+	(CGFontGetHMetricsPtr || (CGFontGetAscentPtr && CGFontGetDescentPtr && CGFontGetLeadingPtr)))
+	_cairo_quartz_font_symbols_present = TRUE;
+
+    _cairo_quartz_font_symbol_lookup_done = TRUE;
+}
+
+typedef struct _cairo_quartz_font_face cairo_quartz_font_face_t;
+typedef struct _cairo_quartz_scaled_font cairo_quartz_scaled_font_t;
+
+struct _cairo_quartz_scaled_font {
+    cairo_scaled_font_t base;
+};
+
+struct _cairo_quartz_font_face {
+    cairo_font_face_t base;
+
+    CGFontRef cgFont;
+};
+
+/*
+ * font face backend
+ */
+
+static cairo_status_t
+_cairo_quartz_font_face_create_for_toy (cairo_toy_font_face_t   *toy_face,
+					cairo_font_face_t      **font_face)
+{
+    const char *family;
+    char *full_name;
+    CFStringRef cgFontName = NULL;
+    CGFontRef cgFont = NULL;
+    int loop;
+
+    quartz_font_ensure_symbols();
+    if (! _cairo_quartz_font_symbols_present)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    family = toy_face->family;
+    full_name = _cairo_malloc (strlen (family) + 64); // give us a bit of room to tack on Bold, Oblique, etc.
+    /* handle CSS-ish faces */
+    if (!strcmp(family, "serif") || !strcmp(family, "Times Roman"))
+	family = "Times";
+    else if (!strcmp(family, "sans-serif") || !strcmp(family, "sans"))
+	family = "Helvetica";
+    else if (!strcmp(family, "cursive"))
+	family = "Apple Chancery";
+    else if (!strcmp(family, "fantasy"))
+	family = "Papyrus";
+    else if (!strcmp(family, "monospace") || !strcmp(family, "mono"))
+	family = "Courier";
+
+    /* Try to build up the full name, e.g. "Helvetica Bold Oblique" first,
+     * then drop the bold, then drop the slant, then drop both.. finally
+     * just use "Helvetica".  And if Helvetica doesn't exist, give up.
+     */
+    for (loop = 0; loop < 5; loop++) {
+	if (loop == 4)
+	    family = "Helvetica";
+
+	strcpy (full_name, family);
+
+	if (loop < 3 && (loop & 1) == 0) {
+	    if (toy_face->weight == CAIRO_FONT_WEIGHT_BOLD)
+		strcat (full_name, " Bold");
+	}
+
+	if (loop < 3 && (loop & 2) == 0) {
+	    if (toy_face->slant == CAIRO_FONT_SLANT_ITALIC)
+		strcat (full_name, " Italic");
+	    else if (toy_face->slant == CAIRO_FONT_SLANT_OBLIQUE)
+		strcat (full_name, " Oblique");
+	}
+
+	if (CGFontCreateWithFontNamePtr) {
+	    cgFontName = CFStringCreateWithCString (NULL, full_name, kCFStringEncodingASCII);
+	    cgFont = CGFontCreateWithFontNamePtr (cgFontName);
+	    CFRelease (cgFontName);
+	} else {
+	    cgFont = CGFontCreateWithNamePtr (full_name);
+	}
+
+	if (cgFont)
+	    break;
+    }
+
+    if (!cgFont) {
+	/* Give up */
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    *font_face = cairo_quartz_font_face_create_for_cgfont (cgFont);
+    CGFontRelease (cgFont);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_quartz_font_face_destroy (void *abstract_face)
+{
+    cairo_quartz_font_face_t *font_face = (cairo_quartz_font_face_t*) abstract_face;
+
+    CGFontRelease (font_face->cgFont);
+    return TRUE;
+}
+
+static const cairo_scaled_font_backend_t _cairo_quartz_scaled_font_backend;
+
+static cairo_status_t
+_cairo_quartz_font_face_scaled_font_create (void *abstract_face,
+					    const cairo_matrix_t *font_matrix,
+					    const cairo_matrix_t *ctm,
+					    const cairo_font_options_t *options,
+					    cairo_scaled_font_t **font_out)
+{
+    cairo_quartz_font_face_t *font_face = abstract_face;
+    cairo_quartz_scaled_font_t *font = NULL;
+    cairo_status_t status;
+    cairo_font_extents_t fs_metrics;
+    double ems;
+    CGRect bbox;
+
+    quartz_font_ensure_symbols();
+    if (!_cairo_quartz_font_symbols_present)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font = _cairo_malloc (sizeof(cairo_quartz_scaled_font_t));
+    if (font == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    memset (font, 0, sizeof(cairo_quartz_scaled_font_t));
+
+    status = _cairo_scaled_font_init (&font->base,
+				      &font_face->base, font_matrix, ctm, options,
+				      &_cairo_quartz_scaled_font_backend);
+    if (status)
+	goto FINISH;
+
+    ems = CGFontGetUnitsPerEmPtr (font_face->cgFont);
+
+    /* initialize metrics */
+    if (CGFontGetFontBBoxPtr && CGFontGetAscentPtr) {
+	fs_metrics.ascent = (CGFontGetAscentPtr (font_face->cgFont) / ems);
+	fs_metrics.descent = - (CGFontGetDescentPtr (font_face->cgFont) / ems);
+	fs_metrics.height = fs_metrics.ascent + fs_metrics.descent +
+	    (CGFontGetLeadingPtr (font_face->cgFont) / ems);
+
+	bbox = CGFontGetFontBBoxPtr (font_face->cgFont);
+	fs_metrics.max_x_advance = CGRectGetMaxX(bbox) / ems;
+	fs_metrics.max_y_advance = 0.0;
+    } else {
+	CGGlyph wGlyph;
+	UniChar u;
+
+	quartz_CGFontMetrics *m;
+	m = CGFontGetHMetricsPtr (font_face->cgFont);
+
+	/* On OX 10.4, GetHMetricsPtr sometimes returns NULL for unknown reasons */
+	if (!m) {
+	    status = _cairo_error(CAIRO_STATUS_NULL_POINTER);
+	    goto FINISH;
+	}
+
+	fs_metrics.ascent = (m->ascent / ems);
+	fs_metrics.descent = - (m->descent / ems);
+	fs_metrics.height = fs_metrics.ascent + fs_metrics.descent + (m->leading / ems);
+
+	/* We kind of have to guess here; W's big, right? */
+	u = (UniChar) 'W';
+	CGFontGetGlyphsForUnicharsPtr (font_face->cgFont, &u, &wGlyph, 1);
+	if (wGlyph && CGFontGetGlyphBBoxesPtr (font_face->cgFont, &wGlyph, 1, &bbox)) {
+	    fs_metrics.max_x_advance = CGRectGetMaxX(bbox) / ems;
+	    fs_metrics.max_y_advance = 0.0;
+	} else {
+	    fs_metrics.max_x_advance = 0.0;
+	    fs_metrics.max_y_advance = 0.0;
+	}
+    }
+
+    status = _cairo_scaled_font_set_metrics (&font->base, &fs_metrics);
+
+FINISH:
+    if (status != CAIRO_STATUS_SUCCESS) {
+	free (font);
+    } else {
+	*font_out = (cairo_scaled_font_t*) font;
+    }
+
+    return status;
+}
+
+const cairo_font_face_backend_t _cairo_quartz_font_face_backend = {
+    CAIRO_FONT_TYPE_QUARTZ,
+    _cairo_quartz_font_face_create_for_toy,
+    _cairo_quartz_font_face_destroy,
+    _cairo_quartz_font_face_scaled_font_create
+};
+
+/**
+ * cairo_quartz_font_face_create_for_cgfont:
+ * @font: a #CGFontRef obtained through a method external to cairo.
+ *
+ * Creates a new font for the Quartz font backend based on a
+ * #CGFontRef.  This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create().
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.6
+ **/
+cairo_font_face_t *
+cairo_quartz_font_face_create_for_cgfont (CGFontRef font)
+{
+    cairo_quartz_font_face_t *font_face;
+
+    quartz_font_ensure_symbols();
+
+    font_face = _cairo_malloc (sizeof (cairo_quartz_font_face_t));
+    if (!font_face) {
+	cairo_status_t ignore_status;
+	ignore_status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+    }
+
+    font_face->cgFont = CGFontRetain (font);
+
+    _cairo_font_face_init (&font_face->base, &_cairo_quartz_font_face_backend);
+
+    return &font_face->base;
+}
+
+/*
+ * scaled font backend
+ */
+
+static cairo_quartz_font_face_t *
+_cairo_quartz_scaled_to_face (void *abstract_font)
+{
+    cairo_quartz_scaled_font_t *sfont = (cairo_quartz_scaled_font_t*) abstract_font;
+    cairo_font_face_t *font_face = sfont->base.font_face;
+    assert (font_face->backend->type == CAIRO_FONT_TYPE_QUARTZ);
+    return (cairo_quartz_font_face_t*) font_face;
+}
+
+static void
+_cairo_quartz_scaled_font_fini(void *abstract_font)
+{
+}
+
+static inline CGGlyph
+_cairo_quartz_scaled_glyph_index (cairo_scaled_glyph_t *scaled_glyph) {
+    unsigned long index = _cairo_scaled_glyph_index (scaled_glyph);
+    return index <= CGGLYPH_MAX ? index : CGGLYPH_INVALID;
+}
+
+static cairo_int_status_t
+_cairo_quartz_init_glyph_metrics (cairo_quartz_scaled_font_t *font,
+				  cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
+    cairo_text_extents_t extents = {0, 0, 0, 0, 0, 0};
+    CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
+    int advance;
+    CGRect bbox;
+    double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
+    double xmin, ymin, xmax, ymax;
+
+    if (unlikely (glyph == CGGLYPH_INVALID))
+	goto FAIL;
+
+    if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
+	!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
+	goto FAIL;
+
+    /* broken fonts like Al Bayan return incorrect bounds for some null characters,
+       see https://bugzilla.mozilla.org/show_bug.cgi?id=534260 */
+    if (unlikely (bbox.origin.x == -32767 &&
+                  bbox.origin.y == -32767 &&
+                  bbox.size.width == 65534 &&
+                  bbox.size.height == 65534)) {
+        bbox.origin.x = bbox.origin.y = 0;
+        bbox.size.width = bbox.size.height = 0;
+    }
+
+    bbox = CGRectMake (bbox.origin.x / emscale,
+		       bbox.origin.y / emscale,
+		       bbox.size.width / emscale,
+		       bbox.size.height / emscale);
+
+    /* Should we want to always integer-align glyph extents, we can do so in this way */
+#if 0
+    {
+	CGAffineTransform textMatrix;
+	textMatrix = CGAffineTransformMake (font->base.scale.xx,
+					    -font->base.scale.yx,
+					    -font->base.scale.xy,
+					    font->base.scale.yy,
+					    0.0f, 0.0f);
+
+	bbox = CGRectApplyAffineTransform (bbox, textMatrix);
+	bbox = CGRectIntegral (bbox);
+	bbox = CGRectApplyAffineTransform (bbox, CGAffineTransformInvert (textMatrix));
+    }
+#endif
+
+#if 0
+    fprintf (stderr, "[0x%04x] bbox: %f %f %f %f\n", glyph,
+	     bbox.origin.x / emscale, bbox.origin.y / emscale,
+	     bbox.size.width / emscale, bbox.size.height / emscale);
+#endif
+
+    xmin = CGRectGetMinX(bbox);
+    ymin = CGRectGetMinY(bbox);
+    xmax = CGRectGetMaxX(bbox);
+    ymax = CGRectGetMaxY(bbox);
+
+    extents.x_bearing = xmin;
+    extents.y_bearing = - ymax;
+    extents.width = xmax - xmin;
+    extents.height = ymax - ymin;
+
+    extents.x_advance = (double) advance / emscale;
+    extents.y_advance = 0.0;
+
+#if 0
+    fprintf (stderr, "[0x%04x] extents: bearings: %f %f dim: %f %f adv: %f\n\n", glyph,
+	     extents.x_bearing, extents.y_bearing, extents.width, extents.height, extents.x_advance);
+#endif
+
+  FAIL:
+    _cairo_scaled_glyph_set_metrics (scaled_glyph,
+				     &font->base,
+				     &extents);
+
+    return status;
+}
+
+static void
+_cairo_quartz_path_apply_func (void *info, const CGPathElement *el)
+{
+    cairo_path_fixed_t *path = (cairo_path_fixed_t *) info;
+    cairo_status_t status;
+
+    switch (el->type) {
+	case kCGPathElementMoveToPoint:
+	    status = _cairo_path_fixed_move_to (path,
+						_cairo_fixed_from_double(el->points[0].x),
+						_cairo_fixed_from_double(el->points[0].y));
+	    assert(!status);
+	    break;
+	case kCGPathElementAddLineToPoint:
+	    status = _cairo_path_fixed_line_to (path,
+						_cairo_fixed_from_double(el->points[0].x),
+						_cairo_fixed_from_double(el->points[0].y));
+	    assert(!status);
+	    break;
+	case kCGPathElementAddQuadCurveToPoint: {
+	    cairo_fixed_t fx, fy;
+	    double x, y;
+	    if (!_cairo_path_fixed_get_current_point (path, &fx, &fy))
+		fx = fy = 0;
+	    x = _cairo_fixed_to_double (fx);
+	    y = _cairo_fixed_to_double (fy);
+
+	    status = _cairo_path_fixed_curve_to (path,
+						 _cairo_fixed_from_double((x + el->points[0].x * 2.0) / 3.0),
+						 _cairo_fixed_from_double((y + el->points[0].y * 2.0) / 3.0),
+						 _cairo_fixed_from_double((el->points[0].x * 2.0 + el->points[1].x) / 3.0),
+						 _cairo_fixed_from_double((el->points[0].y * 2.0 + el->points[1].y) / 3.0),
+						 _cairo_fixed_from_double(el->points[1].x),
+						 _cairo_fixed_from_double(el->points[1].y));
+	}
+	    assert(!status);
+	    break;
+	case kCGPathElementAddCurveToPoint:
+	    status = _cairo_path_fixed_curve_to (path,
+						 _cairo_fixed_from_double(el->points[0].x),
+						 _cairo_fixed_from_double(el->points[0].y),
+						 _cairo_fixed_from_double(el->points[1].x),
+						 _cairo_fixed_from_double(el->points[1].y),
+						 _cairo_fixed_from_double(el->points[2].x),
+						 _cairo_fixed_from_double(el->points[2].y));
+	    assert(!status);	    
+	    break;
+	case kCGPathElementCloseSubpath:
+	    status = _cairo_path_fixed_close_path (path);
+	    assert(!status);
+	    break;
+    }
+}
+
+static cairo_int_status_t
+_cairo_quartz_init_glyph_path (cairo_quartz_scaled_font_t *font,
+			       cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
+    CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
+    CGAffineTransform textMatrix;
+    CGPathRef glyphPath;
+    cairo_path_fixed_t *path;
+
+    if (unlikely (glyph == CGGLYPH_INVALID)) {
+	_cairo_scaled_glyph_set_path (scaled_glyph, &font->base, _cairo_path_fixed_create());
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* scale(1,-1) * font->base.scale */
+    textMatrix = CGAffineTransformMake (font->base.scale.xx,
+					font->base.scale.yx,
+					-font->base.scale.xy,
+					-font->base.scale.yy,
+					0, 0);
+
+    if (CTFontCreateWithGraphicsFontPtr && CTFontCreatePathForGlyphPtr) {
+	CTFontRef ctFont = CTFontCreateWithGraphicsFontPtr (font_face->cgFont, 1.0, NULL, NULL);
+	glyphPath = CTFontCreatePathForGlyphPtr (ctFont, glyph, &textMatrix);
+	CFRelease (ctFont);
+    } else {
+	glyphPath = CGFontGetGlyphPathPtr (font_face->cgFont, &textMatrix, 0, glyph);
+    }
+
+    if (!glyphPath)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    path = _cairo_path_fixed_create ();
+    if (!path) {
+	CGPathRelease (glyphPath);
+	return _cairo_error(CAIRO_STATUS_NO_MEMORY);
+    }
+
+    CGPathApply (glyphPath, path, _cairo_quartz_path_apply_func);
+
+    CGPathRelease (glyphPath);
+
+    _cairo_scaled_glyph_set_path (scaled_glyph, &font->base, path);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_quartz_init_glyph_surface (cairo_quartz_scaled_font_t *font,
+				  cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
+
+    cairo_image_surface_t *surface = NULL;
+
+    CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
+
+    int advance;
+    CGRect bbox;
+    double width, height;
+    double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
+
+    CGContextRef cgContext = NULL;
+    CGAffineTransform textMatrix;
+    CGRect glyphRect, glyphRectInt;
+    CGPoint glyphOrigin;
+
+    //fprintf (stderr, "scaled_glyph: %p surface: %p\n", scaled_glyph, scaled_glyph->surface);
+
+    /* Create blank 2x2 image if we don't have this character.
+     * Maybe we should draw a better missing-glyph slug or something,
+     * but this is ok for now.
+     */
+    if (unlikely (glyph == CGGLYPH_INVALID)) {
+	surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, 2, 2);
+	status = cairo_surface_status ((cairo_surface_t *) surface);
+	if (status)
+	    return status;
+
+	_cairo_scaled_glyph_set_surface (scaled_glyph,
+					 &font->base,
+					 surface);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
+	!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* scale(1,-1) * font->base.scale * scale(1,-1) */
+    textMatrix = CGAffineTransformMake (font->base.scale.xx,
+					-font->base.scale.yx,
+					-font->base.scale.xy,
+					font->base.scale.yy,
+					0, -0);
+    glyphRect = CGRectMake (bbox.origin.x / emscale,
+			    bbox.origin.y / emscale,
+			    bbox.size.width / emscale,
+			    bbox.size.height / emscale);
+
+    glyphRect = CGRectApplyAffineTransform (glyphRect, textMatrix);
+
+    /* Round the rectangle outwards, so that we don't have to deal
+     * with non-integer-pixel origins or dimensions.
+     */
+    glyphRectInt = CGRectIntegral (glyphRect);
+
+#if 0
+    fprintf (stderr, "glyphRect[o]: %f %f %f %f\n",
+	     glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
+    fprintf (stderr, "glyphRectInt: %f %f %f %f\n",
+	     glyphRectInt.origin.x, glyphRectInt.origin.y, glyphRectInt.size.width, glyphRectInt.size.height);
+#endif
+
+    glyphOrigin = glyphRectInt.origin;
+
+    //textMatrix = CGAffineTransformConcat (textMatrix, CGAffineTransformInvert (ctm));
+
+    width = glyphRectInt.size.width;
+    height = glyphRectInt.size.height;
+
+    //fprintf (stderr, "glyphRect[n]: %f %f %f %f\n", glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
+
+    surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
+    if (surface->base.status)
+	return surface->base.status;
+
+    if (surface->width != 0 && surface->height != 0) {
+	cgContext = CGBitmapContextCreate (surface->data,
+					   surface->width,
+					   surface->height,
+					   8,
+					   surface->stride,
+					   NULL,
+					   kCGImageAlphaOnly);
+
+	if (cgContext == NULL) {
+	    cairo_surface_destroy (&surface->base);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	CGContextSetFont (cgContext, font_face->cgFont);
+	CGContextSetFontSize (cgContext, 1.0);
+	CGContextSetTextMatrix (cgContext, textMatrix);
+
+	switch (font->base.options.antialias) {
+	case CAIRO_ANTIALIAS_SUBPIXEL:
+	case CAIRO_ANTIALIAS_BEST:
+	    CGContextSetShouldAntialias (cgContext, TRUE);
+	    CGContextSetShouldSmoothFonts (cgContext, TRUE);
+	    if (CGContextSetAllowsFontSmoothingPtr &&
+		!CGContextGetAllowsFontSmoothingPtr (cgContext))
+		CGContextSetAllowsFontSmoothingPtr (cgContext, TRUE);
+	    break;
+	case CAIRO_ANTIALIAS_NONE:
+	    CGContextSetShouldAntialias (cgContext, FALSE);
+	    break;
+	case CAIRO_ANTIALIAS_GRAY:
+	case CAIRO_ANTIALIAS_GOOD:
+	case CAIRO_ANTIALIAS_FAST:
+	    CGContextSetShouldAntialias (cgContext, TRUE);
+	    CGContextSetShouldSmoothFonts (cgContext, FALSE);
+	    break;
+	case CAIRO_ANTIALIAS_DEFAULT:
+	default:
+	    /* Don't do anything */
+	    break;
+	}
+
+	CGContextSetAlpha (cgContext, 1.0);
+	CGContextShowGlyphsAtPoint (cgContext, - glyphOrigin.x, - glyphOrigin.y, &glyph, 1);
+
+	CGContextRelease (cgContext);
+    }
+
+    cairo_surface_set_device_offset (&surface->base,
+				     - glyphOrigin.x,
+				     height + glyphOrigin.y);
+
+    _cairo_scaled_glyph_set_surface (scaled_glyph, &font->base, surface);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_quartz_scaled_glyph_init (void *abstract_font,
+				 cairo_scaled_glyph_t *scaled_glyph,
+				 cairo_scaled_glyph_info_t info)
+{
+    cairo_quartz_scaled_font_t *font = (cairo_quartz_scaled_font_t *) abstract_font;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (!status && (info & CAIRO_SCALED_GLYPH_INFO_METRICS))
+	status = _cairo_quartz_init_glyph_metrics (font, scaled_glyph);
+
+    if (!status && (info & CAIRO_SCALED_GLYPH_INFO_PATH))
+	status = _cairo_quartz_init_glyph_path (font, scaled_glyph);
+
+    if (!status && (info & CAIRO_SCALED_GLYPH_INFO_SURFACE))
+	status = _cairo_quartz_init_glyph_surface (font, scaled_glyph);
+
+    return status;
+}
+
+static unsigned long
+_cairo_quartz_ucs4_to_index (void *abstract_font,
+			     uint32_t ucs4)
+{
+    cairo_quartz_scaled_font_t *font = (cairo_quartz_scaled_font_t*) abstract_font;
+    cairo_quartz_font_face_t *ffont = _cairo_quartz_scaled_to_face(font);
+    CGGlyph glyph[2];
+    UniChar utf16[2];
+
+    int len = _cairo_ucs4_to_utf16 (ucs4, utf16);
+    CGFontGetGlyphsForUnicharsPtr (ffont->cgFont, utf16, glyph, len);
+
+    return glyph[0];
+}
+
+static cairo_int_status_t
+_cairo_quartz_load_truetype_table (void	            *abstract_font,
+				   unsigned long     tag,
+				   long              offset,
+				   unsigned char    *buffer,
+				   unsigned long    *length)
+{
+    cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face (abstract_font);
+    CFDataRef data = NULL;
+
+    if (likely (CGFontCopyTableForTagPtr))
+	data = CGFontCopyTableForTagPtr (font_face->cgFont, tag);
+
+    if (!data)
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (buffer == NULL) {
+	*length = CFDataGetLength (data);
+	CFRelease (data);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (CFDataGetLength (data) < offset + (long) *length) {
+	CFRelease (data);
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    CFDataGetBytes (data, CFRangeMake (offset, *length), buffer);
+    CFRelease (data);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_scaled_font_backend_t _cairo_quartz_scaled_font_backend = {
+    CAIRO_FONT_TYPE_QUARTZ,
+    _cairo_quartz_scaled_font_fini,
+    _cairo_quartz_scaled_glyph_init,
+    NULL, /* text_to_glyphs */
+    _cairo_quartz_ucs4_to_index,
+    _cairo_quartz_load_truetype_table,
+    NULL, /* map_glyphs_to_unicode */
+};
+
+/*
+ * private methods that the quartz surface uses
+ */
+
+CGFontRef
+_cairo_quartz_scaled_font_get_cg_font_ref (cairo_scaled_font_t *abstract_font)
+{
+    cairo_quartz_font_face_t *ffont = _cairo_quartz_scaled_to_face(abstract_font);
+
+    return ffont->cgFont;
+}
+
+/*
+ * compat with old ATSUI backend
+ */
+
+/**
+ * cairo_quartz_font_face_create_for_atsu_font_id:
+ * @font_id: an ATSUFontID for the font.
+ *
+ * Creates a new font for the Quartz font backend based on an
+ * #ATSUFontID. This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create().
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.6
+ **/
+cairo_font_face_t *
+cairo_quartz_font_face_create_for_atsu_font_id (ATSUFontID font_id)
+{
+    quartz_font_ensure_symbols();
+
+    if (FMGetATSFontRefFromFontPtr != NULL) {
+	ATSFontRef atsFont = FMGetATSFontRefFromFontPtr (font_id);
+	CGFontRef cgFont = CGFontCreateWithPlatformFont (&atsFont);
+	cairo_font_face_t *ff;
+
+	ff = cairo_quartz_font_face_create_for_cgfont (cgFont);
+
+	CGFontRelease (cgFont);
+
+	return ff;
+    } else {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+    }
+}
+
+/* This is the old name for the above function, exported for compat purposes */
+cairo_font_face_t *cairo_atsui_font_face_create_for_atsu_font_id (ATSUFontID font_id);
+
+cairo_font_face_t *
+cairo_atsui_font_face_create_for_atsu_font_id (ATSUFontID font_id)
+{
+    return cairo_quartz_font_face_create_for_atsu_font_id (font_id);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-quartz-image-surface.c b/libs/cairo-1.16.0/src/cairo-quartz-image-surface.c
new file mode 100644
index 0000000..84d56c9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-quartz-image-surface.c
@@ -0,0 +1,388 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright � 2008 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation.
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-image-surface-inline.h"
+#include "cairo-quartz-image.h"
+#include "cairo-quartz-private.h"
+#include "cairo-surface-backend-private.h"
+
+#include "cairo-error-private.h"
+#include "cairo-default-context-private.h"
+
+#define SURFACE_ERROR_NO_MEMORY (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_NO_MEMORY)))
+#define SURFACE_ERROR_TYPE_MISMATCH (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_SURFACE_TYPE_MISMATCH)))
+#define SURFACE_ERROR_INVALID_SIZE (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_INVALID_SIZE)))
+#define SURFACE_ERROR_INVALID_FORMAT (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_INVALID_FORMAT)))
+
+static void
+DataProviderReleaseCallback (void *info, const void *data, size_t size)
+{
+    cairo_surface_t *surface = (cairo_surface_t *) info;
+    cairo_surface_destroy (surface);
+}
+
+static cairo_surface_t *
+_cairo_quartz_image_surface_create_similar (void *asurface,
+					    cairo_content_t content,
+					    int width,
+					    int height)
+{
+    cairo_surface_t *isurf =
+	_cairo_image_surface_create_with_content (content, width, height);
+    cairo_surface_t *result = cairo_quartz_image_surface_create (isurf);
+    cairo_surface_destroy (isurf);
+
+    return result;
+}
+
+static cairo_surface_t *
+_cairo_quartz_image_surface_create_similar_image (void *asurface,
+						  cairo_format_t format,
+						  int width,
+						  int height)
+{
+    cairo_surface_t *isurf = cairo_image_surface_create (format, width, height);
+    cairo_surface_t *result = cairo_quartz_image_surface_create (isurf);
+    cairo_surface_destroy (isurf);
+
+    return result;
+}
+
+static cairo_status_t
+_cairo_quartz_image_surface_finish (void *asurface)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
+
+    /* the imageSurface will be destroyed by the data provider's release callback */
+    CGImageRelease (surface->image);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_quartz_image_surface_acquire_source_image (void *asurface,
+						  cairo_image_surface_t **image_out,
+						  void **image_extra)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
+
+    *image_out = surface->imageSurface;
+    *image_extra = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_image_surface_t *
+_cairo_quartz_image_surface_map_to_image (void *asurface,
+					  const cairo_rectangle_int_t *extents)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
+    return _cairo_surface_map_to_image (&surface->imageSurface->base, extents);
+}
+
+static cairo_int_status_t
+_cairo_quartz_image_surface_unmap_image (void *asurface,
+					 cairo_image_surface_t *image)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
+    return _cairo_surface_unmap_image (&surface->imageSurface->base, image);
+}
+
+static cairo_bool_t
+_cairo_quartz_image_surface_get_extents (void *asurface,
+					 cairo_rectangle_int_t *extents)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
+
+    extents->x = 0;
+    extents->y = 0;
+    extents->width  = surface->width;
+    extents->height = surface->height;
+    return TRUE;
+}
+
+/* we assume some drawing happened to the image buffer; make sure it's
+ * represented in the CGImage on flush()
+ */
+
+static cairo_status_t
+_cairo_quartz_image_surface_flush (void *asurface,
+				   unsigned flags)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
+    CGImageRef oldImage = surface->image;
+    CGImageRef newImage = NULL;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* XXX only flush if the image has been modified. */
+
+    /* To be released by the ReleaseCallback */
+    cairo_surface_reference ((cairo_surface_t*) surface->imageSurface);
+
+    newImage = CairoQuartzCreateCGImage (surface->imageSurface->format,
+					 surface->imageSurface->width,
+					 surface->imageSurface->height,
+					 surface->imageSurface->stride,
+					 surface->imageSurface->data,
+					 TRUE,
+					 NULL,
+					 DataProviderReleaseCallback,
+					 surface->imageSurface);
+
+    surface->image = newImage;
+    CGImageRelease (oldImage);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_quartz_image_surface_paint (void			*abstract_surface,
+				   cairo_operator_t		 op,
+				   const cairo_pattern_t	*source,
+				   const cairo_clip_t		*clip)
+{
+    cairo_quartz_image_surface_t *surface = abstract_surface;
+    return _cairo_surface_paint (&surface->imageSurface->base,
+				 op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_image_surface_mask (void				*abstract_surface,
+				  cairo_operator_t		 op,
+				  const cairo_pattern_t		*source,
+				  const cairo_pattern_t		*mask,
+				  const cairo_clip_t		*clip)
+{
+    cairo_quartz_image_surface_t *surface = abstract_surface;
+    return _cairo_surface_mask (&surface->imageSurface->base,
+				op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_image_surface_stroke (void			*abstract_surface,
+				    cairo_operator_t		 op,
+				    const cairo_pattern_t	*source,
+				    const cairo_path_fixed_t	*path,
+				    const cairo_stroke_style_t	*style,
+				    const cairo_matrix_t	*ctm,
+				    const cairo_matrix_t	*ctm_inverse,
+				    double			 tolerance,
+				    cairo_antialias_t		 antialias,
+				    const cairo_clip_t		*clip)
+{
+    cairo_quartz_image_surface_t *surface = abstract_surface;
+    return _cairo_surface_stroke (&surface->imageSurface->base,
+				  op, source, path,
+				  style, ctm, ctm_inverse,
+				  tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_image_surface_fill (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t		 fill_rule,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   const cairo_clip_t		*clip)
+{
+    cairo_quartz_image_surface_t *surface = abstract_surface;
+    return _cairo_surface_fill (&surface->imageSurface->base,
+				op, source, path,
+				fill_rule, tolerance, antialias,
+				clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_image_surface_glyphs (void			*abstract_surface,
+				    cairo_operator_t		 op,
+				    const cairo_pattern_t	*source,
+				    cairo_glyph_t		*glyphs,
+				    int				 num_glyphs,
+				    cairo_scaled_font_t		*scaled_font,
+				    const cairo_clip_t		*clip)
+{
+    cairo_quartz_image_surface_t *surface = abstract_surface;
+    return _cairo_surface_show_text_glyphs (&surface->imageSurface->base,
+					    op, source,
+					    NULL, 0,
+					    glyphs, num_glyphs,
+					    NULL, 0, 0,
+					    scaled_font, clip);
+}
+
+
+static const cairo_surface_backend_t cairo_quartz_image_surface_backend = {
+    CAIRO_SURFACE_TYPE_QUARTZ_IMAGE,
+    _cairo_quartz_image_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_quartz_image_surface_create_similar,
+    _cairo_quartz_image_surface_create_similar_image,
+    _cairo_quartz_image_surface_map_to_image,
+    _cairo_quartz_image_surface_unmap_image,
+
+    _cairo_surface_default_source,
+    _cairo_quartz_image_surface_acquire_source_image,
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_quartz_image_surface_get_extents,
+    NULL, /* get_font_options */
+
+    _cairo_quartz_image_surface_flush,
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_quartz_image_surface_paint,
+    _cairo_quartz_image_surface_mask,
+    _cairo_quartz_image_surface_stroke,
+    _cairo_quartz_image_surface_fill,
+    NULL,  /* fill-stroke */
+    _cairo_quartz_image_surface_glyphs,
+};
+
+/**
+ * cairo_quartz_image_surface_create:
+ * @image_surface: a cairo image surface to wrap with a quartz image surface
+ *
+ * Creates a Quartz surface backed by a CGImageRef that references the
+ * given image surface. The resulting surface can be rendered quickly
+ * when used as a source when rendering to a #cairo_quartz_surface.  If
+ * the data in the image surface is ever updated, cairo_surface_flush()
+ * must be called on the #cairo_quartz_image_surface to ensure that the
+ * CGImageRef refers to the updated data.
+ *
+ * Return value: the newly created surface.
+ *
+ * Since: 1.6
+ **/
+cairo_surface_t *
+cairo_quartz_image_surface_create (cairo_surface_t *surface)
+{
+    cairo_quartz_image_surface_t *qisurf;
+
+    CGImageRef image;
+
+    cairo_image_surface_t *image_surface;
+    int width, height, stride;
+    cairo_format_t format;
+    unsigned char *data;
+
+    if (surface->status)
+	return surface;
+
+    if (! _cairo_surface_is_image (surface))
+	return SURFACE_ERROR_TYPE_MISMATCH;
+
+    image_surface = (cairo_image_surface_t*) surface;
+    width = image_surface->width;
+    height = image_surface->height;
+    stride = image_surface->stride;
+    format = image_surface->format;
+    data = image_surface->data;
+
+    if (!_cairo_quartz_verify_surface_size(width, height))
+	return SURFACE_ERROR_INVALID_SIZE;
+
+    if (width == 0 || height == 0)
+	return SURFACE_ERROR_INVALID_SIZE;
+
+    if (format != CAIRO_FORMAT_ARGB32 && format != CAIRO_FORMAT_RGB24)
+	return SURFACE_ERROR_INVALID_FORMAT;
+
+    qisurf = _cairo_malloc (sizeof(cairo_quartz_image_surface_t));
+    if (qisurf == NULL)
+	return SURFACE_ERROR_NO_MEMORY;
+
+    memset (qisurf, 0, sizeof(cairo_quartz_image_surface_t));
+
+    /* In case the create_cgimage fails, this ref will
+     * be released via the callback (which will be called in
+     * case of failure.)
+     */
+    cairo_surface_reference (surface);
+
+    image = CairoQuartzCreateCGImage (format,
+				      width, height,
+				      stride,
+				      data,
+				      TRUE,
+				      NULL,
+				      DataProviderReleaseCallback,
+				      image_surface);
+
+    if (!image) {
+	free (qisurf);
+	return SURFACE_ERROR_NO_MEMORY;
+    }
+
+    _cairo_surface_init (&qisurf->base,
+			 &cairo_quartz_image_surface_backend,
+			 NULL, /* device */
+			 _cairo_content_from_format (format),
+			 FALSE); /* is_vector */
+
+    qisurf->width = width;
+    qisurf->height = height;
+
+    qisurf->image = image;
+    qisurf->imageSurface = image_surface;
+
+    return &qisurf->base;
+}
+
+
+cairo_surface_t *
+cairo_quartz_image_surface_get_image (cairo_surface_t *asurface)
+{
+    cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t*) asurface;
+
+    /* Throw an error for a non-quartz surface */
+    if (! _cairo_surface_is_quartz (asurface)) {
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+    }
+
+    return (cairo_surface_t*) surface->imageSurface;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-quartz-image.h b/libs/cairo-1.16.0/src/cairo-quartz-image.h
new file mode 100644
index 0000000..0dd5abb
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-quartz-image.h
@@ -0,0 +1,59 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation.
+ *
+ * Contributor(s):
+ *      Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#ifndef CAIRO_QUARTZ_IMAGE_H
+#define CAIRO_QUARTZ_IMAGE_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_QUARTZ_IMAGE_SURFACE
+
+#include <Carbon/Carbon.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_quartz_image_surface_create (cairo_surface_t *image_surface);
+
+cairo_public cairo_surface_t *
+cairo_quartz_image_surface_get_image (cairo_surface_t *surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_QUARTZ_IMAGE_SURFACE */
+# error Cairo was not compiled with support for the quartz-image backend
+#endif /* CAIRO_HAS_QUARTZ_IMAGE_SURFACE */
+
+#endif /* CAIRO_QUARTZ_IMAGE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-quartz-private.h b/libs/cairo-1.16.0/src/cairo-quartz-private.h
new file mode 100644
index 0000000..42e1f9e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-quartz-private.h
@@ -0,0 +1,113 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Calum Robinson
+ * Copyright (C) 2006,2007 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Calum Robinson
+ *
+ * Contributor(s):
+ *    Calum Robinson <calumr@mac.com>
+ *    Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#ifndef CAIRO_QUARTZ_PRIVATE_H
+#define CAIRO_QUARTZ_PRIVATE_H
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_QUARTZ_SURFACE
+#include "cairo-quartz.h"
+#include "cairo-surface-clipper-private.h"
+
+#ifndef CGFLOAT_DEFINED
+/* On 10.4, Quartz APIs used float instead of CGFloat */
+typedef float CGFloat;
+#endif
+
+typedef CGFloat cairo_quartz_float_t;
+
+typedef enum {
+    DO_DIRECT,
+    DO_SHADING,
+    DO_IMAGE,
+    DO_TILED_IMAGE
+} cairo_quartz_action_t;
+
+/* define CTFontRef for pre-10.5 SDKs */
+typedef const struct __CTFont *CTFontRef;
+
+typedef struct cairo_quartz_surface {
+    cairo_surface_t base;
+
+    CGContextRef cgContext;
+    CGAffineTransform cgContextBaseCTM;
+
+    void *imageData;
+    cairo_surface_t *imageSurfaceEquiv;
+
+    cairo_surface_clipper_t clipper;
+    cairo_rectangle_int_t extents;
+    cairo_rectangle_int_t virtual_extents;
+} cairo_quartz_surface_t;
+
+typedef struct cairo_quartz_image_surface {
+    cairo_surface_t base;
+
+    int width, height;
+
+    CGImageRef image;
+    cairo_image_surface_t *imageSurface;
+} cairo_quartz_image_surface_t;
+
+cairo_private cairo_bool_t
+_cairo_quartz_verify_surface_size(int width, int height);
+
+cairo_private cairo_bool_t
+_cairo_surface_is_quartz (const cairo_surface_t *surface);
+
+cairo_private CGImageRef
+CairoQuartzCreateCGImage (cairo_format_t format,
+			      unsigned int width,
+			      unsigned int height,
+			      unsigned int stride,
+			      void *data,
+			      cairo_bool_t interpolate,
+			      CGColorSpaceRef colorSpaceOverride,
+			      CGDataProviderReleaseDataCallback releaseCallback,
+			      void *releaseInfo);
+
+cairo_private CGFontRef
+_cairo_quartz_scaled_font_get_cg_font_ref (cairo_scaled_font_t *sfont);
+
+#else
+
+# error Cairo was not compiled with support for the quartz backend
+
+#endif /* CAIRO_HAS_QUARTZ_SURFACE */
+
+#endif /* CAIRO_QUARTZ_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-quartz-surface.c b/libs/cairo-1.16.0/src/cairo-quartz-surface.c
new file mode 100644
index 0000000..65d0308
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-quartz-surface.c
@@ -0,0 +1,2590 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright � 2006, 2007 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation.
+ *
+ * Contributor(s):
+ *	Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#define _GNU_SOURCE /* required for RTLD_DEFAULT */
+#include "cairoint.h"
+
+#include "cairo-quartz-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-recording-surface-private.h"
+
+#include <dlfcn.h>
+
+#ifndef RTLD_DEFAULT
+#define RTLD_DEFAULT ((void *) 0)
+#endif
+
+#include <limits.h>
+
+#undef QUARTZ_DEBUG
+
+#ifdef QUARTZ_DEBUG
+#define ND(_x)	fprintf _x
+#else
+#define ND(_x)	do {} while(0)
+#endif
+
+#define IS_EMPTY(s) ((s)->extents.width == 0 || (s)->extents.height == 0)
+
+/**
+ * SECTION:cairo-quartz
+ * @Title: Quartz Surfaces
+ * @Short_Description: Rendering to Quartz surfaces
+ * @See_Also: #cairo_surface_t
+ *
+ * The Quartz surface is used to render cairo graphics targeting the
+ * Apple OS X Quartz rendering system.
+ **/
+
+/**
+ * CAIRO_HAS_QUARTZ_SURFACE:
+ *
+ * Defined if the Quartz surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.6
+ **/
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+/* This method is private, but it exists.  Its params are are exposed
+ * as args to the NS* method, but not as CG.
+ */
+enum PrivateCGCompositeMode {
+    kPrivateCGCompositeClear		= 0,
+    kPrivateCGCompositeCopy		= 1,
+    kPrivateCGCompositeSourceOver	= 2,
+    kPrivateCGCompositeSourceIn		= 3,
+    kPrivateCGCompositeSourceOut	= 4,
+    kPrivateCGCompositeSourceAtop	= 5,
+    kPrivateCGCompositeDestinationOver	= 6,
+    kPrivateCGCompositeDestinationIn	= 7,
+    kPrivateCGCompositeDestinationOut	= 8,
+    kPrivateCGCompositeDestinationAtop	= 9,
+    kPrivateCGCompositeXOR		= 10,
+    kPrivateCGCompositePlusDarker	= 11, // (max (0, (1-d) + (1-s)))
+    kPrivateCGCompositePlusLighter	= 12, // (min (1, s + d))
+};
+typedef enum PrivateCGCompositeMode PrivateCGCompositeMode;
+CG_EXTERN void CGContextSetCompositeOperation (CGContextRef, PrivateCGCompositeMode);
+#endif
+
+/* Some of these are present in earlier versions of the OS than where
+ * they are public; other are not public at all
+ */
+/* public since 10.5 */
+static void (*CGContextDrawTiledImagePtr) (CGContextRef, CGRect, CGImageRef) = NULL;
+
+/* public since 10.6 */
+static CGPathRef (*CGContextCopyPathPtr) (CGContextRef) = NULL;
+static void (*CGContextSetAllowsFontSmoothingPtr) (CGContextRef, bool) = NULL;
+
+/* not yet public */
+static unsigned int (*CGContextGetTypePtr) (CGContextRef) = NULL;
+static bool (*CGContextGetAllowsFontSmoothingPtr) (CGContextRef) = NULL;
+
+static cairo_bool_t _cairo_quartz_symbol_lookup_done = FALSE;
+
+/*
+ * Utility functions
+ */
+
+#ifdef QUARTZ_DEBUG
+static void quartz_surface_to_png (cairo_quartz_surface_t *nq, char *dest);
+static void quartz_image_to_png (CGImageRef, char *dest);
+#endif
+
+static cairo_quartz_surface_t *
+_cairo_quartz_surface_create_internal (CGContextRef cgContext,
+				       cairo_content_t content,
+				       unsigned int width,
+				       unsigned int height);
+
+/* Load all extra symbols */
+static void quartz_ensure_symbols (void)
+{
+    if (likely (_cairo_quartz_symbol_lookup_done))
+	return;
+
+    CGContextDrawTiledImagePtr = dlsym (RTLD_DEFAULT, "CGContextDrawTiledImage");
+    CGContextGetTypePtr = dlsym (RTLD_DEFAULT, "CGContextGetType");
+    CGContextCopyPathPtr = dlsym (RTLD_DEFAULT, "CGContextCopyPath");
+    CGContextGetAllowsFontSmoothingPtr = dlsym (RTLD_DEFAULT, "CGContextGetAllowsFontSmoothing");
+    CGContextSetAllowsFontSmoothingPtr = dlsym (RTLD_DEFAULT, "CGContextSetAllowsFontSmoothing");
+
+    _cairo_quartz_symbol_lookup_done = TRUE;
+}
+
+CGImageRef
+CairoQuartzCreateCGImage (cairo_format_t format,
+			  unsigned int width,
+			  unsigned int height,
+			  unsigned int stride,
+			  void *data,
+			  cairo_bool_t interpolate,
+			  CGColorSpaceRef colorSpaceOverride,
+			  CGDataProviderReleaseDataCallback releaseCallback,
+			  void *releaseInfo)
+{
+    CGImageRef image = NULL;
+    CGDataProviderRef dataProvider = NULL;
+    CGColorSpaceRef colorSpace = colorSpaceOverride;
+    CGBitmapInfo bitinfo = kCGBitmapByteOrder32Host;
+    int bitsPerComponent, bitsPerPixel;
+
+    switch (format) {
+	case CAIRO_FORMAT_ARGB32:
+	    if (colorSpace == NULL)
+		colorSpace = CGColorSpaceCreateDeviceRGB ();
+	    bitinfo |= kCGImageAlphaPremultipliedFirst;
+	    bitsPerComponent = 8;
+	    bitsPerPixel = 32;
+	    break;
+
+	case CAIRO_FORMAT_RGB24:
+	    if (colorSpace == NULL)
+		colorSpace = CGColorSpaceCreateDeviceRGB ();
+	    bitinfo |= kCGImageAlphaNoneSkipFirst;
+	    bitsPerComponent = 8;
+	    bitsPerPixel = 32;
+	    break;
+
+	case CAIRO_FORMAT_A8:
+	    bitsPerComponent = 8;
+	    bitsPerPixel = 8;
+	    break;
+
+	case CAIRO_FORMAT_A1:
+#ifdef WORDS_BIGENDIAN
+	    bitsPerComponent = 1;
+	    bitsPerPixel = 1;
+	    break;
+#endif
+
+	case CAIRO_FORMAT_RGB30:
+	case CAIRO_FORMAT_RGB16_565:
+	case CAIRO_FORMAT_INVALID:
+	default:
+	    return NULL;
+    }
+
+    dataProvider = CGDataProviderCreateWithData (releaseInfo,
+						 data,
+						 height * stride,
+						 releaseCallback);
+
+    if (unlikely (!dataProvider)) {
+	// manually release
+	if (releaseCallback)
+	    releaseCallback (releaseInfo, data, height * stride);
+	goto FINISH;
+    }
+
+    if (format == CAIRO_FORMAT_A8 || format == CAIRO_FORMAT_A1) {
+	cairo_quartz_float_t decode[] = {1.0, 0.0};
+	image = CGImageMaskCreate (width, height,
+				   bitsPerComponent,
+				   bitsPerPixel,
+				   stride,
+				   dataProvider,
+				   decode,
+				   interpolate);
+    } else
+	image = CGImageCreate (width, height,
+			       bitsPerComponent,
+			       bitsPerPixel,
+			       stride,
+			       colorSpace,
+			       bitinfo,
+			       dataProvider,
+			       NULL,
+			       interpolate,
+			       kCGRenderingIntentDefault);
+
+FINISH:
+
+    CGDataProviderRelease (dataProvider);
+
+    if (colorSpace != colorSpaceOverride)
+	CGColorSpaceRelease (colorSpace);
+
+    return image;
+}
+
+static inline cairo_bool_t
+_cairo_quartz_is_cgcontext_bitmap_context (CGContextRef cgc)
+{
+    if (unlikely (cgc == NULL))
+	return FALSE;
+
+    if (likely (CGContextGetTypePtr)) {
+	/* 4 is the type value of a bitmap context */
+	return CGContextGetTypePtr (cgc) == 4;
+    }
+
+    /* This will cause a (harmless) warning to be printed if called on a non-bitmap context */
+    return CGBitmapContextGetBitsPerPixel (cgc) != 0;
+}
+
+/* CoreGraphics limitation with flipped CTM surfaces: height must be less than signed 16-bit max */
+
+#define CG_MAX_HEIGHT   SHRT_MAX
+#define CG_MAX_WIDTH    USHRT_MAX
+
+/* is the desired size of the surface within bounds? */
+cairo_bool_t
+_cairo_quartz_verify_surface_size (int width, int height)
+{
+    /* hmmm, allow width, height == 0 ? */
+    if (width < 0 || height < 0)
+	return FALSE;
+
+    if (width > CG_MAX_WIDTH || height > CG_MAX_HEIGHT)
+	return FALSE;
+
+    return TRUE;
+}
+
+/*
+ * Cairo path -> Quartz path conversion helpers
+ */
+
+/* cairo path -> execute in context */
+static cairo_status_t
+_cairo_path_to_quartz_context_move_to (void *closure,
+				       const cairo_point_t *point)
+{
+    //ND ((stderr, "moveto: %f %f\n", _cairo_fixed_to_double (point->x), _cairo_fixed_to_double (point->y)));
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    CGContextMoveToPoint (closure, x, y);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_to_quartz_context_line_to (void *closure,
+				       const cairo_point_t *point)
+{
+    //ND ((stderr, "lineto: %f %f\n",  _cairo_fixed_to_double (point->x), _cairo_fixed_to_double (point->y)));
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    CGContextAddLineToPoint (closure, x, y);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_to_quartz_context_curve_to (void *closure,
+					const cairo_point_t *p0,
+					const cairo_point_t *p1,
+					const cairo_point_t *p2)
+{
+    //ND ((stderr, "curveto: %f,%f %f,%f %f,%f\n",
+    //		   _cairo_fixed_to_double (p0->x), _cairo_fixed_to_double (p0->y),
+    //		   _cairo_fixed_to_double (p1->x), _cairo_fixed_to_double (p1->y),
+    //		   _cairo_fixed_to_double (p2->x), _cairo_fixed_to_double (p2->y)));
+    double x0 = _cairo_fixed_to_double (p0->x);
+    double y0 = _cairo_fixed_to_double (p0->y);
+    double x1 = _cairo_fixed_to_double (p1->x);
+    double y1 = _cairo_fixed_to_double (p1->y);
+    double x2 = _cairo_fixed_to_double (p2->x);
+    double y2 = _cairo_fixed_to_double (p2->y);
+
+    CGContextAddCurveToPoint (closure, x0, y0, x1, y1, x2, y2);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_path_to_quartz_context_close_path (void *closure)
+{
+    //ND ((stderr, "closepath\n"));
+    CGContextClosePath (closure);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_quartz_cairo_path_to_quartz_context (const cairo_path_fixed_t *path,
+					    CGContextRef closure)
+{
+    cairo_status_t status;
+
+    CGContextBeginPath (closure);
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_path_to_quartz_context_move_to,
+					  _cairo_path_to_quartz_context_line_to,
+					  _cairo_path_to_quartz_context_curve_to,
+					  _cairo_path_to_quartz_context_close_path,
+					  closure);
+
+    assert (status == CAIRO_STATUS_SUCCESS);
+}
+
+/*
+ * Misc helpers/callbacks
+ */
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+static PrivateCGCompositeMode
+_cairo_quartz_cairo_operator_to_quartz_composite (cairo_operator_t op)
+{
+    switch (op) {
+	case CAIRO_OPERATOR_CLEAR:
+	    return kPrivateCGCompositeClear;
+	case CAIRO_OPERATOR_SOURCE:
+	    return kPrivateCGCompositeCopy;
+	case CAIRO_OPERATOR_OVER:
+	    return kPrivateCGCompositeSourceOver;
+	case CAIRO_OPERATOR_IN:
+	    return kPrivateCGCompositeSourceIn;
+	case CAIRO_OPERATOR_OUT:
+	    return kPrivateCGCompositeSourceOut;
+	case CAIRO_OPERATOR_ATOP:
+	    return kPrivateCGCompositeSourceAtop;
+	case CAIRO_OPERATOR_DEST_OVER:
+	    return kPrivateCGCompositeDestinationOver;
+	case CAIRO_OPERATOR_DEST_IN:
+	    return kPrivateCGCompositeDestinationIn;
+	case CAIRO_OPERATOR_DEST_OUT:
+	    return kPrivateCGCompositeDestinationOut;
+	case CAIRO_OPERATOR_DEST_ATOP:
+	    return kPrivateCGCompositeDestinationAtop;
+	case CAIRO_OPERATOR_XOR:
+	    return kPrivateCGCompositeXOR;
+	case CAIRO_OPERATOR_ADD:
+	    return kPrivateCGCompositePlusLighter;
+
+	case CAIRO_OPERATOR_DEST:
+	case CAIRO_OPERATOR_SATURATE:
+	case CAIRO_OPERATOR_MULTIPLY:
+	case CAIRO_OPERATOR_SCREEN:
+	case CAIRO_OPERATOR_OVERLAY:
+	case CAIRO_OPERATOR_DARKEN:
+	case CAIRO_OPERATOR_LIGHTEN:
+	case CAIRO_OPERATOR_COLOR_DODGE:
+	case CAIRO_OPERATOR_COLOR_BURN:
+	case CAIRO_OPERATOR_HARD_LIGHT:
+	case CAIRO_OPERATOR_SOFT_LIGHT:
+	case CAIRO_OPERATOR_DIFFERENCE:
+	case CAIRO_OPERATOR_EXCLUSION:
+	case CAIRO_OPERATOR_HSL_HUE:
+	case CAIRO_OPERATOR_HSL_SATURATION:
+	case CAIRO_OPERATOR_HSL_COLOR:
+	case CAIRO_OPERATOR_HSL_LUMINOSITY:
+        default:
+	    ASSERT_NOT_REACHED;
+    }
+}
+#endif
+
+static CGBlendMode
+_cairo_quartz_cairo_operator_to_quartz_blend (cairo_operator_t op)
+{
+    switch (op) {
+	case CAIRO_OPERATOR_MULTIPLY:
+	    return kCGBlendModeMultiply;
+	case CAIRO_OPERATOR_SCREEN:
+	    return kCGBlendModeScreen;
+	case CAIRO_OPERATOR_OVERLAY:
+	    return kCGBlendModeOverlay;
+	case CAIRO_OPERATOR_DARKEN:
+	    return kCGBlendModeDarken;
+	case CAIRO_OPERATOR_LIGHTEN:
+	    return kCGBlendModeLighten;
+	case CAIRO_OPERATOR_COLOR_DODGE:
+	    return kCGBlendModeColorDodge;
+	case CAIRO_OPERATOR_COLOR_BURN:
+	    return kCGBlendModeColorBurn;
+	case CAIRO_OPERATOR_HARD_LIGHT:
+	    return kCGBlendModeHardLight;
+	case CAIRO_OPERATOR_SOFT_LIGHT:
+	    return kCGBlendModeSoftLight;
+	case CAIRO_OPERATOR_DIFFERENCE:
+	    return kCGBlendModeDifference;
+	case CAIRO_OPERATOR_EXCLUSION:
+	    return kCGBlendModeExclusion;
+	case CAIRO_OPERATOR_HSL_HUE:
+	    return kCGBlendModeHue;
+	case CAIRO_OPERATOR_HSL_SATURATION:
+	    return kCGBlendModeSaturation;
+	case CAIRO_OPERATOR_HSL_COLOR:
+	    return kCGBlendModeColor;
+	case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	    return kCGBlendModeLuminosity;
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
+	case CAIRO_OPERATOR_CLEAR:
+	    return kCGBlendModeClear;
+	case CAIRO_OPERATOR_SOURCE:
+	    return kCGBlendModeCopy;
+	case CAIRO_OPERATOR_OVER:
+	    return kCGBlendModeNormal;
+	case CAIRO_OPERATOR_IN:
+	    return kCGBlendModeSourceIn;
+	case CAIRO_OPERATOR_OUT:
+	    return kCGBlendModeSourceOut;
+	case CAIRO_OPERATOR_ATOP:
+	    return kCGBlendModeSourceAtop;
+	case CAIRO_OPERATOR_DEST_OVER:
+	    return kCGBlendModeDestinationOver;
+	case CAIRO_OPERATOR_DEST_IN:
+	    return kCGBlendModeDestinationIn;
+	case CAIRO_OPERATOR_DEST_OUT:
+	    return kCGBlendModeDestinationOut;
+	case CAIRO_OPERATOR_DEST_ATOP:
+	    return kCGBlendModeDestinationAtop;
+	case CAIRO_OPERATOR_XOR:
+	    return kCGBlendModeXOR;
+	case CAIRO_OPERATOR_ADD:
+	    return kCGBlendModePlusLighter;
+#else
+	case CAIRO_OPERATOR_CLEAR:
+	case CAIRO_OPERATOR_SOURCE:
+	case CAIRO_OPERATOR_OVER:
+	case CAIRO_OPERATOR_IN:
+	case CAIRO_OPERATOR_OUT:
+	case CAIRO_OPERATOR_ATOP:
+	case CAIRO_OPERATOR_DEST_OVER:
+	case CAIRO_OPERATOR_DEST_IN:
+	case CAIRO_OPERATOR_DEST_OUT:
+	case CAIRO_OPERATOR_DEST_ATOP:
+	case CAIRO_OPERATOR_XOR:
+	case CAIRO_OPERATOR_ADD:
+#endif
+
+	case CAIRO_OPERATOR_DEST:
+	case CAIRO_OPERATOR_SATURATE:
+        default:
+	    ASSERT_NOT_REACHED;
+    }
+}
+
+static cairo_int_status_t
+_cairo_cgcontext_set_cairo_operator (CGContextRef context, cairo_operator_t op)
+{
+    CGBlendMode blendmode;
+
+    assert (op != CAIRO_OPERATOR_DEST);
+
+    /* Quartz doesn't support SATURATE at all. COLOR_DODGE and
+     * COLOR_BURN in Quartz follow the ISO32000 definition, but cairo
+     * uses the definition from the Adobe Supplement.  Also fallback
+     * on SOFT_LIGHT and HSL_HUE, because their results are
+     * significantly different from those provided by pixman.
+     */
+    if (op == CAIRO_OPERATOR_SATURATE ||
+	op == CAIRO_OPERATOR_SOFT_LIGHT ||
+	op == CAIRO_OPERATOR_HSL_HUE ||
+	op == CAIRO_OPERATOR_COLOR_DODGE ||
+	op == CAIRO_OPERATOR_COLOR_BURN)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+    if (op <= CAIRO_OPERATOR_ADD) {
+	PrivateCGCompositeMode compmode;
+
+	compmode = _cairo_quartz_cairo_operator_to_quartz_composite (op);
+	CGContextSetCompositeOperation (context, compmode);
+	return CAIRO_STATUS_SUCCESS;
+    }
+#endif
+
+    blendmode = _cairo_quartz_cairo_operator_to_quartz_blend (op);
+    CGContextSetBlendMode (context, blendmode);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_quartz_surface_set_cairo_operator (cairo_quartz_surface_t *surface, cairo_operator_t op)
+{
+    ND((stderr, "%p _cairo_quartz_surface_set_cairo_operator %d\n", surface, op));
+
+    /* When the destination has no color components, we can avoid some
+     * fallbacks, but we have to workaround operators which behave
+     * differently in Quartz. */
+    if (surface->base.content == CAIRO_CONTENT_ALPHA) {
+	assert (op != CAIRO_OPERATOR_ATOP); /* filtered by surface layer */
+
+	if (op == CAIRO_OPERATOR_SOURCE ||
+	    op == CAIRO_OPERATOR_IN ||
+	    op == CAIRO_OPERATOR_OUT ||
+	    op == CAIRO_OPERATOR_DEST_IN ||
+	    op == CAIRO_OPERATOR_DEST_ATOP ||
+	    op == CAIRO_OPERATOR_XOR)
+	{
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	}
+
+	if (op == CAIRO_OPERATOR_DEST_OVER)
+	    op = CAIRO_OPERATOR_OVER;
+	else if (op == CAIRO_OPERATOR_SATURATE)
+	    op = CAIRO_OPERATOR_ADD;
+	else if (op == CAIRO_OPERATOR_COLOR_DODGE)
+	    op = CAIRO_OPERATOR_OVER;
+	else if (op == CAIRO_OPERATOR_COLOR_BURN)
+	    op = CAIRO_OPERATOR_OVER;
+    }
+
+    return _cairo_cgcontext_set_cairo_operator (surface->cgContext, op);
+}
+
+static inline CGLineCap
+_cairo_quartz_cairo_line_cap_to_quartz (cairo_line_cap_t ccap)
+{
+    switch (ccap) {
+    default:
+	ASSERT_NOT_REACHED;
+
+    case CAIRO_LINE_CAP_BUTT:
+	return kCGLineCapButt;
+
+    case CAIRO_LINE_CAP_ROUND:
+	return kCGLineCapRound;
+
+    case CAIRO_LINE_CAP_SQUARE:
+	return kCGLineCapSquare;
+    }
+}
+
+static inline CGLineJoin
+_cairo_quartz_cairo_line_join_to_quartz (cairo_line_join_t cjoin)
+{
+    switch (cjoin) {
+    default:
+	ASSERT_NOT_REACHED;
+
+    case CAIRO_LINE_JOIN_MITER:
+	return kCGLineJoinMiter;
+
+    case CAIRO_LINE_JOIN_ROUND:
+	return kCGLineJoinRound;
+
+    case CAIRO_LINE_JOIN_BEVEL:
+	return kCGLineJoinBevel;
+    }
+}
+
+static inline CGInterpolationQuality
+_cairo_quartz_filter_to_quartz (cairo_filter_t filter)
+{
+    /* The CGInterpolationQuality enumeration values seem to have the
+     * following meaning:
+     *  - kCGInterpolationNone: nearest neighbor
+     *  - kCGInterpolationLow: bilinear
+     *  - kCGInterpolationHigh: bicubic? Lanczos?
+     */
+
+    switch (filter) {
+    case CAIRO_FILTER_NEAREST:
+    case CAIRO_FILTER_FAST:
+	return kCGInterpolationNone;
+
+    case CAIRO_FILTER_BEST:
+	return kCGInterpolationHigh;
+
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BILINEAR:
+	return kCGInterpolationLow;
+
+    case CAIRO_FILTER_GAUSSIAN:
+	return kCGInterpolationDefault;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return kCGInterpolationDefault;
+    }
+}
+
+static inline void
+_cairo_quartz_cairo_matrix_to_quartz (const cairo_matrix_t *src,
+				      CGAffineTransform *dst)
+{
+    dst->a = src->xx;
+    dst->b = src->yx;
+    dst->c = src->xy;
+    dst->d = src->yy;
+    dst->tx = src->x0;
+    dst->ty = src->y0;
+}
+
+
+/*
+ * Source -> Quartz setup and finish functions
+ */
+
+static void
+ComputeGradientValue (void *info,
+                      const cairo_quartz_float_t *in,
+                      cairo_quartz_float_t *out)
+{
+    double fdist = *in;
+    const cairo_gradient_pattern_t *grad = (cairo_gradient_pattern_t*) info;
+    unsigned int i;
+
+    /* Put fdist back in the 0.0..1.0 range if we're doing
+     * REPEAT/REFLECT
+     */
+    if (grad->base.extend == CAIRO_EXTEND_REPEAT) {
+	fdist = fdist - floor (fdist);
+    } else if (grad->base.extend == CAIRO_EXTEND_REFLECT) {
+	fdist = fmod (fabs (fdist), 2.0);
+	if (fdist > 1.0)
+	    fdist = 2.0 - fdist;
+    }
+
+    for (i = 0; i < grad->n_stops; i++)
+	if (grad->stops[i].offset > fdist)
+	    break;
+
+    if (i == 0 || i == grad->n_stops) {
+	if (i == grad->n_stops)
+	    --i;
+	out[0] = grad->stops[i].color.red;
+	out[1] = grad->stops[i].color.green;
+	out[2] = grad->stops[i].color.blue;
+	out[3] = grad->stops[i].color.alpha;
+    } else {
+	cairo_quartz_float_t ax = grad->stops[i-1].offset;
+	cairo_quartz_float_t bx = grad->stops[i].offset - ax;
+	cairo_quartz_float_t bp = (fdist - ax)/bx;
+	cairo_quartz_float_t ap = 1.0 - bp;
+
+	out[0] =
+	    grad->stops[i-1].color.red * ap +
+	    grad->stops[i].color.red * bp;
+	out[1] =
+	    grad->stops[i-1].color.green * ap +
+	    grad->stops[i].color.green * bp;
+	out[2] =
+	    grad->stops[i-1].color.blue * ap +
+	    grad->stops[i].color.blue * bp;
+	out[3] =
+	    grad->stops[i-1].color.alpha * ap +
+	    grad->stops[i].color.alpha * bp;
+    }
+}
+
+static const cairo_quartz_float_t gradient_output_value_ranges[8] = {
+    0.f, 1.f, 0.f, 1.f, 0.f, 1.f, 0.f, 1.f
+};
+static const CGFunctionCallbacks gradient_callbacks = {
+    0, ComputeGradientValue, (CGFunctionReleaseInfoCallback) cairo_pattern_destroy
+};
+
+/* Quartz computes a small number of samples of the gradient color
+ * function. On MacOS X 10.5 it apparently computes only 1024
+ * samples. */
+#define MAX_GRADIENT_RANGE 1024
+
+static CGFunctionRef
+CairoQuartzCreateGradientFunction (const cairo_gradient_pattern_t *gradient,
+				   const cairo_rectangle_int_t    *extents,
+				   cairo_circle_double_t          *start,
+				   cairo_circle_double_t          *end)
+{
+    cairo_pattern_t *pat;
+    cairo_quartz_float_t input_value_range[2];
+
+    if (gradient->base.extend != CAIRO_EXTEND_NONE) {
+	double bounds_x1, bounds_x2, bounds_y1, bounds_y2;
+	double t[2], tolerance;
+
+	tolerance = fabs (_cairo_matrix_compute_determinant (&gradient->base.matrix));
+	tolerance /= _cairo_matrix_transformed_circle_major_axis (&gradient->base.matrix, 1);
+
+	bounds_x1 = extents->x;
+	bounds_y1 = extents->y;
+	bounds_x2 = extents->x + extents->width;
+	bounds_y2 = extents->y + extents->height;
+	_cairo_matrix_transform_bounding_box (&gradient->base.matrix,
+					      &bounds_x1, &bounds_y1,
+					      &bounds_x2, &bounds_y2,
+					      NULL);
+
+	_cairo_gradient_pattern_box_to_parameter (gradient,
+						  bounds_x1, bounds_y1,
+						  bounds_x2, bounds_y2,
+						  tolerance,
+						  t);
+
+	if (gradient->base.extend == CAIRO_EXTEND_PAD) {
+	    t[0] = MAX (t[0], -0.5);
+	    t[1] = MIN (t[1],  1.5);
+	} else if (t[1] - t[0] > MAX_GRADIENT_RANGE)
+	    return NULL;
+
+	/* set the input range for the function -- the function knows how
+	   to map values outside of 0.0 .. 1.0 to the correct color */
+	input_value_range[0] = t[0];
+	input_value_range[1] = t[1];
+    } else {
+	input_value_range[0] = 0;
+	input_value_range[1] = 1;
+    }
+
+    _cairo_gradient_pattern_interpolate (gradient, input_value_range[0], start);
+    _cairo_gradient_pattern_interpolate (gradient, input_value_range[1], end);
+
+    if (_cairo_pattern_create_copy (&pat, &gradient->base))
+	return NULL;
+
+    return CGFunctionCreate (pat,
+			     1,
+			     input_value_range,
+			     4,
+			     gradient_output_value_ranges,
+			     &gradient_callbacks);
+}
+
+/* Obtain a CGImageRef from a #cairo_surface_t * */
+
+typedef struct {
+    cairo_surface_t *surface;
+    cairo_image_surface_t *image_out;
+    void *image_extra;
+} quartz_source_image_t;
+
+static void
+DataProviderReleaseCallback (void *info, const void *data, size_t size)
+{
+    quartz_source_image_t *source_img = info;
+    _cairo_surface_release_source_image (source_img->surface, source_img->image_out, source_img->image_extra);
+    free (source_img);
+}
+
+static cairo_status_t
+_cairo_surface_to_cgimage (cairo_surface_t       *source,
+			   cairo_rectangle_int_t *extents,
+			   cairo_format_t         format,
+			   cairo_matrix_t        *matrix,
+			   const cairo_clip_t    *clip,
+			   CGImageRef            *image_out)
+{
+    cairo_status_t status;
+    quartz_source_image_t *source_img;
+    cairo_image_surface_t *image_surface;
+
+    if (source->backend && source->backend->type == CAIRO_SURFACE_TYPE_QUARTZ_IMAGE) {
+	cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) source;
+	*image_out = CGImageRetain (surface->image);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (_cairo_surface_is_quartz (source)) {
+	cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) source;
+	if (IS_EMPTY (surface)) {
+	    *image_out = NULL;
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+	}
+
+	if (_cairo_quartz_is_cgcontext_bitmap_context (surface->cgContext)) {
+	    *image_out = CGBitmapContextCreateImage (surface->cgContext);
+	    if (*image_out)
+		return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    source_img = _cairo_malloc (sizeof (quartz_source_image_t));
+    if (unlikely (source_img == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    source_img->surface = source;
+
+    if (source->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	image_surface = (cairo_image_surface_t *)
+	    cairo_image_surface_create (format, extents->width, extents->height);
+	if (unlikely (image_surface->base.status)) {
+	    status = image_surface->base.status;
+	    cairo_surface_destroy (&image_surface->base);
+	    free (source_img);
+	    return status;
+	}
+
+	status = _cairo_recording_surface_replay_with_clip (source,
+							    matrix,
+							    &image_surface->base,
+							    NULL);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&image_surface->base);
+	    free (source_img);
+	    return status;
+	}
+
+	source_img->image_out = image_surface;
+	source_img->image_extra = NULL;
+
+	cairo_matrix_init_identity (matrix);
+    }
+    else {
+	status = _cairo_surface_acquire_source_image (source_img->surface,
+						      &source_img->image_out,
+						      &source_img->image_extra);
+	if (unlikely (status)) {
+	    free (source_img);
+	    return status;
+	}
+    }
+
+    if (source_img->image_out->width == 0 || source_img->image_out->height == 0) {
+	*image_out = NULL;
+	DataProviderReleaseCallback (source_img,
+				     source_img->image_out->data,
+				     source_img->image_out->height * source_img->image_out->stride);
+    } else {
+	*image_out = CairoQuartzCreateCGImage (source_img->image_out->format,
+					       source_img->image_out->width,
+					       source_img->image_out->height,
+					       source_img->image_out->stride,
+					       source_img->image_out->data,
+					       TRUE,
+					       NULL,
+					       DataProviderReleaseCallback,
+					       source_img);
+
+	/* TODO: differentiate memory error and unsupported surface type */
+	if (unlikely (*image_out == NULL))
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    return status;
+}
+
+/* Generic #cairo_pattern_t -> CGPattern function */
+
+typedef struct {
+    CGImageRef image;
+    CGRect imageBounds;
+    cairo_bool_t do_reflect;
+} SurfacePatternDrawInfo;
+
+static void
+SurfacePatternDrawFunc (void *ainfo, CGContextRef context)
+{
+    SurfacePatternDrawInfo *info = (SurfacePatternDrawInfo*) ainfo;
+
+    CGContextTranslateCTM (context, 0, info->imageBounds.size.height);
+    CGContextScaleCTM (context, 1, -1);
+
+    CGContextDrawImage (context, info->imageBounds, info->image);
+    if (info->do_reflect) {
+	/* draw 3 more copies of the image, flipped.
+	 * DrawImage draws the image according to the current Y-direction into the rectangle given
+	 * (imageBounds); at the time of the first DrawImage above, the origin is at the bottom left
+	 * of the base image position, and the Y axis is extending upwards.
+	 */
+
+	/* Make the y axis extend downwards, and draw a flipped image below */
+	CGContextScaleCTM (context, 1, -1);
+	CGContextDrawImage (context, info->imageBounds, info->image);
+
+	/* Shift over to the right, and flip vertically (translation is 2x,
+	 * since we'll be flipping and thus rendering the rectangle "backwards"
+	 */
+	CGContextTranslateCTM (context, 2 * info->imageBounds.size.width, 0);
+	CGContextScaleCTM (context, -1, 1);
+	CGContextDrawImage (context, info->imageBounds, info->image);
+
+	/* Then unflip the Y-axis again, and draw the image above the point. */
+	CGContextScaleCTM (context, 1, -1);
+	CGContextDrawImage (context, info->imageBounds, info->image);
+    }
+}
+
+static void
+SurfacePatternReleaseInfoFunc (void *ainfo)
+{
+    SurfacePatternDrawInfo *info = (SurfacePatternDrawInfo*) ainfo;
+
+    CGImageRelease (info->image);
+    free (info);
+}
+
+static cairo_int_status_t
+_cairo_quartz_cairo_repeating_surface_pattern_to_quartz (cairo_quartz_surface_t *dest,
+							 const cairo_pattern_t *apattern,
+							 const cairo_clip_t *clip,
+							 CGPatternRef *cgpat)
+{
+    cairo_surface_pattern_t *spattern;
+    cairo_surface_t *pat_surf;
+    cairo_rectangle_int_t extents;
+    cairo_format_t format = _cairo_format_from_content (dest->base.content);
+
+    CGImageRef image;
+    CGRect pbounds;
+    CGAffineTransform ptransform, stransform;
+    CGPatternCallbacks cb = { 0,
+			      SurfacePatternDrawFunc,
+			      SurfacePatternReleaseInfoFunc };
+    SurfacePatternDrawInfo *info;
+    cairo_quartz_float_t rw, rh;
+    cairo_status_t status;
+    cairo_bool_t is_bounded;
+
+    cairo_matrix_t m;
+
+    /* SURFACE is the only type we'll handle here */
+    assert (apattern->type == CAIRO_PATTERN_TYPE_SURFACE);
+
+    spattern = (cairo_surface_pattern_t *) apattern;
+    pat_surf = spattern->surface;
+
+    if (pat_surf->type != CAIRO_SURFACE_TYPE_RECORDING) {
+	is_bounded = _cairo_surface_get_extents (pat_surf, &extents);
+	assert (is_bounded);
+    }
+    else
+	_cairo_surface_get_extents (&dest->base, &extents);
+
+    m = spattern->base.matrix;
+    status = _cairo_surface_to_cgimage (pat_surf, &extents, format,
+					&m, clip, &image);
+    if (unlikely (status))
+	return status;
+
+    info = _cairo_malloc (sizeof (SurfacePatternDrawInfo));
+    if (unlikely (!info))
+	return CAIRO_STATUS_NO_MEMORY;
+
+    /* XXX -- if we're printing, we may need to call CGImageCreateCopy to make sure
+     * that the data will stick around for this image when the printer gets to it.
+     * Otherwise, the underlying data store may disappear from under us!
+     *
+     * _cairo_surface_to_cgimage will copy when it converts non-Quartz surfaces,
+     * since the Quartz surfaces have a higher chance of sticking around.  If the
+     * source is a quartz image surface, then it's set up to retain a ref to the
+     * image surface that it's backed by.
+     */
+    info->image = image;
+    info->imageBounds = CGRectMake (0, 0, extents.width, extents.height);
+    info->do_reflect = FALSE;
+
+    pbounds.origin.x = 0;
+    pbounds.origin.y = 0;
+
+    if (spattern->base.extend == CAIRO_EXTEND_REFLECT) {
+	pbounds.size.width = 2.0 * extents.width;
+	pbounds.size.height = 2.0 * extents.height;
+	info->do_reflect = TRUE;
+    } else {
+	pbounds.size.width = extents.width;
+	pbounds.size.height = extents.height;
+    }
+    rw = pbounds.size.width;
+    rh = pbounds.size.height;
+
+    cairo_matrix_invert (&m);
+    _cairo_quartz_cairo_matrix_to_quartz (&m, &stransform);
+
+    /* The pattern matrix is relative to the bottom left, again; the
+     * incoming cairo pattern matrix is relative to the upper left.
+     * So we take the pattern matrix and the original context matrix,
+     * which gives us the correct base translation/y flip.
+     */
+    ptransform = CGAffineTransformConcat (stransform, dest->cgContextBaseCTM);
+
+#ifdef QUARTZ_DEBUG
+    ND ((stderr, "  pbounds: %f %f %f %f\n", pbounds.origin.x, pbounds.origin.y, pbounds.size.width, pbounds.size.height));
+    ND ((stderr, "  pattern xform: t: %f %f xx: %f xy: %f yx: %f yy: %f\n", ptransform.tx, ptransform.ty, ptransform.a, ptransform.b, ptransform.c, ptransform.d));
+    CGAffineTransform xform = CGContextGetCTM (dest->cgContext);
+    ND ((stderr, "  context xform: t: %f %f xx: %f xy: %f yx: %f yy: %f\n", xform.tx, xform.ty, xform.a, xform.b, xform.c, xform.d));
+#endif
+
+    *cgpat = CGPatternCreate (info,
+			      pbounds,
+			      ptransform,
+			      rw, rh,
+			      kCGPatternTilingConstantSpacing, /* kCGPatternTilingNoDistortion, */
+			      TRUE,
+			      &cb);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* State used during a drawing operation. */
+typedef struct {
+    /* The destination of the mask */
+    CGContextRef cgMaskContext;
+
+    /* The destination of the drawing of the source */
+    CGContextRef cgDrawContext;
+
+    /* The filter to be used when drawing the source */
+    CGInterpolationQuality filter;
+
+    /* Action type */
+    cairo_quartz_action_t action;
+
+    /* Destination rect */
+    CGRect rect;
+
+    /* Used with DO_SHADING, DO_IMAGE and DO_TILED_IMAGE */
+    CGAffineTransform transform;
+
+    /* Used with DO_IMAGE and DO_TILED_IMAGE */
+    CGImageRef image;
+
+    /* Used with DO_SHADING */
+    CGShadingRef shading;
+
+    /* Temporary destination for unbounded operations */
+    CGLayerRef layer;
+    CGRect clipRect;
+} cairo_quartz_drawing_state_t;
+
+/*
+Quartz does not support repeating radients. We handle repeating gradients
+by manually extending the gradient and repeating color stops. We need to
+minimize the number of repetitions since Quartz seems to sample our color
+function across the entire range, even if part of that range is not needed
+for the visible area of the gradient, and it samples with some fixed resolution,
+so if the gradient range is too large it samples with very low resolution and
+the gradient is very coarse. _cairo_quartz_create_gradient_function computes
+the number of repetitions needed based on the extents.
+*/
+static cairo_int_status_t
+_cairo_quartz_setup_gradient_source (cairo_quartz_drawing_state_t *state,
+				     const cairo_gradient_pattern_t *gradient,
+				     const cairo_rectangle_int_t *extents)
+{
+    cairo_matrix_t mat;
+    cairo_circle_double_t start, end;
+    CGFunctionRef gradFunc;
+    CGColorSpaceRef rgb;
+    bool extend = gradient->base.extend != CAIRO_EXTEND_NONE;
+
+    assert (gradient->n_stops > 0);
+
+    mat = gradient->base.matrix;
+    cairo_matrix_invert (&mat);
+    _cairo_quartz_cairo_matrix_to_quartz (&mat, &state->transform);
+
+    gradFunc = CairoQuartzCreateGradientFunction (gradient, extents,
+						  &start, &end);
+
+    if (unlikely (gradFunc == NULL))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    rgb = CGColorSpaceCreateDeviceRGB ();
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	state->shading = CGShadingCreateAxial (rgb,
+					       CGPointMake (start.center.x,
+							    start.center.y),
+					       CGPointMake (end.center.x,
+							    end.center.y),
+					       gradFunc,
+					       extend, extend);
+    } else {
+	state->shading = CGShadingCreateRadial (rgb,
+						CGPointMake (start.center.x,
+							     start.center.y),
+						MAX (start.radius, 0),
+						CGPointMake (end.center.x,
+							     end.center.y),
+						MAX (end.radius, 0),
+						gradFunc,
+						extend, extend);
+    }
+
+    CGColorSpaceRelease (rgb);
+    CGFunctionRelease (gradFunc);
+
+    state->action = DO_SHADING;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_quartz_setup_state (cairo_quartz_drawing_state_t *state,
+			   cairo_composite_rectangles_t *composite)
+{
+    cairo_quartz_surface_t       *surface = (cairo_quartz_surface_t *) composite->surface;
+    cairo_operator_t              op = composite->op;
+    const cairo_pattern_t        *source = &composite->source_pattern.base;
+    const cairo_clip_t           *clip = composite->clip;
+    cairo_bool_t needs_temp;
+    cairo_status_t status;
+    cairo_format_t format = _cairo_format_from_content (composite->surface->content);
+
+    state->layer = NULL;
+    state->image = NULL;
+    state->shading = NULL;
+    state->cgDrawContext = NULL;
+    state->cgMaskContext = NULL;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_quartz_surface_set_cairo_operator (surface, op);
+    if (unlikely (status))
+	return status;
+
+    /* Save before we change the pattern, colorspace, etc. so that
+     * we can restore and make sure that quartz releases our
+     * pattern (which may be stack allocated)
+     */
+
+    CGContextSaveGState (surface->cgContext);
+    state->clipRect = CGContextGetClipBoundingBox (surface->cgContext);
+    state->clipRect = CGRectIntegral (state->clipRect);
+    state->rect = state->clipRect;
+
+    state->cgMaskContext = surface->cgContext;
+    state->cgDrawContext = state->cgMaskContext;
+
+    state->filter = _cairo_quartz_filter_to_quartz (source->filter);
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	CGContextSetRGBFillColor (state->cgDrawContext, 0, 0, 0, 1);
+
+	state->action = DO_DIRECT;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /*
+     * To implement mask unbounded operations Quartz needs a temporary
+     * surface which will be composited entirely (ignoring the mask).
+     * To implement source unbounded operations Quartz needs a
+     * temporary surface which allows extending the source to a size
+     * covering the whole mask, but there are some optimization
+     * opportunities:
+     *
+     * - CLEAR completely ignores the source, thus we can just use a
+     *   solid color fill.
+     *
+     * - SOURCE can be implemented by drawing the source and clearing
+     *   outside of the source as long as the two regions have no
+     *   intersection. This happens when the source is a pixel-aligned
+     *   rectangle. If the source is at least as big as the
+     *   intersection between the clip rectangle and the mask
+     *   rectangle, no clear operation is needed.
+     */
+    needs_temp = ! _cairo_operator_bounded_by_mask (op);
+
+    if (needs_temp) {
+	state->layer = CGLayerCreateWithContext (surface->cgContext,
+						 state->clipRect.size,
+						 NULL);
+	state->cgDrawContext = CGLayerGetContext (state->layer);
+	state->cgMaskContext = state->cgDrawContext;
+	CGContextTranslateCTM (state->cgDrawContext,
+			       -state->clipRect.origin.x,
+			       -state->clipRect.origin.y);
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
+
+	CGContextSetRGBStrokeColor (state->cgDrawContext,
+				    solid->color.red,
+				    solid->color.green,
+				    solid->color.blue,
+				    solid->color.alpha);
+	CGContextSetRGBFillColor (state->cgDrawContext,
+				  solid->color.red,
+				  solid->color.green,
+				  solid->color.blue,
+				  solid->color.alpha);
+
+	state->action = DO_DIRECT;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_LINEAR ||
+	source->type == CAIRO_PATTERN_TYPE_RADIAL)
+    {
+	const cairo_gradient_pattern_t *gpat = (const cairo_gradient_pattern_t *)source;
+	cairo_rectangle_int_t extents;
+
+	extents = surface->virtual_extents;
+	extents.x -= surface->base.device_transform.x0;
+	extents.y -= surface->base.device_transform.y0;
+	_cairo_rectangle_union (&extents, &surface->extents);
+
+	return _cairo_quartz_setup_gradient_source (state, gpat, &extents);
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	(source->extend == CAIRO_EXTEND_NONE || (CGContextDrawTiledImagePtr && source->extend == CAIRO_EXTEND_REPEAT)))
+    {
+	const cairo_surface_pattern_t *spat = (const cairo_surface_pattern_t *) source;
+	cairo_surface_t *pat_surf = spat->surface;
+	CGImageRef img;
+	cairo_matrix_t m = spat->base.matrix;
+	cairo_rectangle_int_t extents;
+	CGAffineTransform xform;
+	CGRect srcRect;
+	cairo_fixed_t fw, fh;
+	cairo_bool_t is_bounded;
+
+	_cairo_surface_get_extents (composite->surface, &extents);
+	status = _cairo_surface_to_cgimage (pat_surf, &extents, format,
+					    &m, clip, &img);
+	if (unlikely (status))
+	    return status;
+
+	state->image = img;
+
+	if (state->filter == kCGInterpolationNone && _cairo_matrix_is_translation (&m)) {
+	    m.x0 = -ceil (m.x0 - 0.5);
+	    m.y0 = -ceil (m.y0 - 0.5);
+	} else {
+	    cairo_matrix_invert (&m);
+	}
+
+	_cairo_quartz_cairo_matrix_to_quartz (&m, &state->transform);
+
+	if (pat_surf->type != CAIRO_SURFACE_TYPE_RECORDING) {
+	    is_bounded = _cairo_surface_get_extents (pat_surf, &extents);
+	    assert (is_bounded);
+	}
+
+	srcRect = CGRectMake (0, 0, extents.width, extents.height);
+
+	if (source->extend == CAIRO_EXTEND_NONE) {
+	    int x, y;
+	    if (op == CAIRO_OPERATOR_SOURCE &&
+		(pat_surf->content == CAIRO_CONTENT_ALPHA ||
+		 ! _cairo_matrix_is_integer_translation (&m, &x, &y)))
+	    {
+		state->layer = CGLayerCreateWithContext (surface->cgContext,
+							 state->clipRect.size,
+							 NULL);
+		state->cgDrawContext = CGLayerGetContext (state->layer);
+		CGContextTranslateCTM (state->cgDrawContext,
+				       -state->clipRect.origin.x,
+				       -state->clipRect.origin.y);
+	    }
+
+	    CGContextSetRGBFillColor (state->cgDrawContext, 0, 0, 0, 1);
+
+	    state->rect = srcRect;
+	    state->action = DO_IMAGE;
+	    return CAIRO_STATUS_SUCCESS;
+	}
+
+	CGContextSetRGBFillColor (state->cgDrawContext, 0, 0, 0, 1);
+
+	/* Quartz seems to tile images at pixel-aligned regions only -- this
+	 * leads to seams if the image doesn't end up scaling to fill the
+	 * space exactly.  The CGPattern tiling approach doesn't have this
+	 * problem.  Check if we're going to fill up the space (within some
+	 * epsilon), and if not, fall back to the CGPattern type.
+	 */
+
+	xform = CGAffineTransformConcat (CGContextGetCTM (state->cgDrawContext),
+					 state->transform);
+
+	srcRect = CGRectApplyAffineTransform (srcRect, xform);
+
+	fw = _cairo_fixed_from_double (srcRect.size.width);
+	fh = _cairo_fixed_from_double (srcRect.size.height);
+
+	if ((fw & CAIRO_FIXED_FRAC_MASK) <= CAIRO_FIXED_EPSILON &&
+	    (fh & CAIRO_FIXED_FRAC_MASK) <= CAIRO_FIXED_EPSILON)
+	{
+	    /* We're good to use DrawTiledImage, but ensure that
+	     * the math works out */
+
+	    srcRect.size.width = round (srcRect.size.width);
+	    srcRect.size.height = round (srcRect.size.height);
+
+	    xform = CGAffineTransformInvert (xform);
+
+	    srcRect = CGRectApplyAffineTransform (srcRect, xform);
+
+	    state->rect = srcRect;
+	    state->action = DO_TILED_IMAGE;
+	    return CAIRO_STATUS_SUCCESS;
+	}
+
+	/* Fall through to generic SURFACE case */
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_quartz_float_t patternAlpha = 1.0f;
+	CGColorSpaceRef patternSpace;
+	CGPatternRef pattern = NULL;
+	cairo_int_status_t status;
+
+	status = _cairo_quartz_cairo_repeating_surface_pattern_to_quartz (surface, source, clip, &pattern);
+	if (unlikely (status))
+	    return status;
+
+	patternSpace = CGColorSpaceCreatePattern (NULL);
+	CGContextSetFillColorSpace (state->cgDrawContext, patternSpace);
+	CGContextSetFillPattern (state->cgDrawContext, pattern, &patternAlpha);
+	CGContextSetStrokeColorSpace (state->cgDrawContext, patternSpace);
+	CGContextSetStrokePattern (state->cgDrawContext, pattern, &patternAlpha);
+	CGColorSpaceRelease (patternSpace);
+
+	/* Quartz likes to munge the pattern phase (as yet unexplained
+	 * why); force it to 0,0 as we've already baked in the correct
+	 * pattern translation into the pattern matrix
+	 */
+	CGContextSetPatternPhase (state->cgDrawContext, CGSizeMake (0, 0));
+
+	CGPatternRelease (pattern);
+
+	state->action = DO_DIRECT;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static void
+_cairo_quartz_teardown_state (cairo_quartz_drawing_state_t *state,
+			      cairo_composite_rectangles_t *extents)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) extents->surface;
+
+    if (state->layer) {
+	CGContextDrawLayerInRect (surface->cgContext,
+				  state->clipRect,
+				  state->layer);
+	CGLayerRelease (state->layer);
+    }
+
+    if (state->cgMaskContext)
+	CGContextRestoreGState (surface->cgContext);
+
+    if (state->image)
+	CGImageRelease (state->image);
+
+    if (state->shading)
+	CGShadingRelease (state->shading);
+}
+
+static void
+_cairo_quartz_draw_source (cairo_quartz_drawing_state_t *state,
+			   cairo_operator_t              op)
+{
+    CGContextSetShouldAntialias (state->cgDrawContext, state->filter != kCGInterpolationNone);
+    CGContextSetInterpolationQuality(state->cgDrawContext, state->filter);
+
+    if (state->action == DO_DIRECT) {
+	CGContextFillRect (state->cgDrawContext, state->rect);
+	return;
+    }
+
+    CGContextConcatCTM (state->cgDrawContext, state->transform);
+
+    if (state->action == DO_SHADING) {
+	CGContextDrawShading (state->cgDrawContext, state->shading);
+	return;
+    }
+
+    CGContextTranslateCTM (state->cgDrawContext, 0, state->rect.size.height);
+    CGContextScaleCTM (state->cgDrawContext, 1, -1);
+
+    if (state->action == DO_IMAGE) {
+	CGContextDrawImage (state->cgDrawContext, state->rect, state->image);
+	if (op == CAIRO_OPERATOR_SOURCE &&
+	    state->cgDrawContext == state->cgMaskContext)
+	{
+	    CGContextBeginPath (state->cgDrawContext);
+	    CGContextAddRect (state->cgDrawContext, state->rect);
+
+	    CGContextTranslateCTM (state->cgDrawContext, 0, state->rect.size.height);
+	    CGContextScaleCTM (state->cgDrawContext, 1, -1);
+	    CGContextConcatCTM (state->cgDrawContext,
+				CGAffineTransformInvert (state->transform));
+
+	    CGContextAddRect (state->cgDrawContext, state->clipRect);
+
+	    CGContextSetRGBFillColor (state->cgDrawContext, 0, 0, 0, 0);
+	    CGContextEOFillPath (state->cgDrawContext);
+	}
+    } else {
+	CGContextDrawTiledImagePtr (state->cgDrawContext, state->rect, state->image);
+    }
+}
+
+static cairo_image_surface_t *
+_cairo_quartz_surface_map_to_image (void *abstract_surface,
+				    const cairo_rectangle_int_t *extents)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
+    unsigned int stride, bitinfo, bpp, color_comps;
+    CGColorSpaceRef colorspace;
+    void *imageData;
+    cairo_format_t format;
+
+    if (surface->imageSurfaceEquiv)
+	return _cairo_surface_map_to_image (surface->imageSurfaceEquiv, extents);
+
+    if (IS_EMPTY (surface))
+	return (cairo_image_surface_t *) cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
+
+    if (! _cairo_quartz_is_cgcontext_bitmap_context (surface->cgContext))
+	return _cairo_image_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    bitinfo = CGBitmapContextGetBitmapInfo (surface->cgContext);
+    bpp = CGBitmapContextGetBitsPerPixel (surface->cgContext);
+
+    // let's hope they don't add YUV under us
+    colorspace = CGBitmapContextGetColorSpace (surface->cgContext);
+    color_comps = CGColorSpaceGetNumberOfComponents (colorspace);
+
+    /* XXX TODO: We can handle many more data formats by
+     * converting to pixman_format_t */
+
+    if (bpp == 32 && color_comps == 3 &&
+	(bitinfo & kCGBitmapAlphaInfoMask) == kCGImageAlphaPremultipliedFirst &&
+	(bitinfo & kCGBitmapByteOrderMask) == kCGBitmapByteOrder32Host)
+    {
+	format = CAIRO_FORMAT_ARGB32;
+    }
+    else if (bpp == 32 && color_comps == 3 &&
+	     (bitinfo & kCGBitmapAlphaInfoMask) == kCGImageAlphaNoneSkipFirst &&
+	     (bitinfo & kCGBitmapByteOrderMask) == kCGBitmapByteOrder32Host)
+    {
+	format = CAIRO_FORMAT_RGB24;
+    }
+    else if (bpp == 8 && color_comps == 1)
+    {
+	format = CAIRO_FORMAT_A1;
+    }
+    else
+    {
+	return _cairo_image_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    imageData = CGBitmapContextGetData (surface->cgContext);
+    stride = CGBitmapContextGetBytesPerRow (surface->cgContext);
+
+    return (cairo_image_surface_t *) cairo_image_surface_create_for_data (imageData,
+									  format,
+									  extents->width,
+									  extents->height,
+									  stride);
+}
+
+static cairo_int_status_t
+_cairo_quartz_surface_unmap_image (void *abstract_surface,
+				   cairo_image_surface_t *image)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
+
+    if (surface->imageSurfaceEquiv)
+	return _cairo_surface_unmap_image (surface->imageSurfaceEquiv, image);
+
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+/*
+ * Cairo surface backend implementations
+ */
+
+static cairo_status_t
+_cairo_quartz_surface_finish (void *abstract_surface)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
+
+    ND ((stderr, "_cairo_quartz_surface_finish[%p] cgc: %p\n", surface, surface->cgContext));
+
+    if (IS_EMPTY (surface))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Restore our saved gstate that we use to reset clipping */
+    CGContextRestoreGState (surface->cgContext);
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    CGContextRelease (surface->cgContext);
+
+    surface->cgContext = NULL;
+
+    if (surface->imageSurfaceEquiv) {
+	cairo_surface_destroy (surface->imageSurfaceEquiv);
+	surface->imageSurfaceEquiv = NULL;
+    }
+
+    free (surface->imageData);
+    surface->imageData = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_quartz_surface_acquire_source_image (void *abstract_surface,
+					     cairo_image_surface_t **image_out,
+					     void **image_extra)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
+
+    //ND ((stderr, "%p _cairo_quartz_surface_acquire_source_image\n", surface));
+
+    *image_extra = NULL;
+
+    *image_out = _cairo_quartz_surface_map_to_image (surface, &surface->extents);
+    if (unlikely (cairo_surface_status(&(*image_out)->base))) {
+	cairo_surface_destroy (&(*image_out)->base);
+	*image_out = NULL;
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_quartz_surface_release_source_image (void *abstract_surface,
+					    cairo_image_surface_t *image,
+					    void *image_extra)
+{
+    _cairo_quartz_surface_unmap_image (abstract_surface, image);
+}
+
+static cairo_surface_t *
+_cairo_quartz_surface_create_similar (void *abstract_surface,
+				      cairo_content_t content,
+				      int width,
+				      int height)
+{
+    cairo_quartz_surface_t *surface, *similar_quartz;
+    cairo_surface_t *similar;
+    cairo_format_t format;
+
+    if (content == CAIRO_CONTENT_COLOR_ALPHA)
+	format = CAIRO_FORMAT_ARGB32;
+    else if (content == CAIRO_CONTENT_COLOR)
+	format = CAIRO_FORMAT_RGB24;
+    else if (content == CAIRO_CONTENT_ALPHA)
+	format = CAIRO_FORMAT_A8;
+    else
+	return NULL;
+
+    // verify width and height of surface
+    if (!_cairo_quartz_verify_surface_size (width, height)) {
+	return _cairo_surface_create_in_error (_cairo_error
+					       (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+    similar = cairo_quartz_surface_create (format, width, height);
+    if (unlikely (similar->status))
+	return similar;
+
+    surface = (cairo_quartz_surface_t *) abstract_surface;
+    similar_quartz = (cairo_quartz_surface_t *) similar;
+    similar_quartz->virtual_extents = surface->virtual_extents;
+
+    return similar;
+}
+
+static cairo_bool_t
+_cairo_quartz_surface_get_extents (void *abstract_surface,
+				   cairo_rectangle_int_t *extents)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
+
+    *extents = surface->extents;
+    return TRUE;
+}
+
+static cairo_int_status_t
+_cairo_quartz_cg_paint (const cairo_compositor_t *compositor,
+			cairo_composite_rectangles_t *extents)
+{
+    cairo_quartz_drawing_state_t state;
+    cairo_int_status_t rv;
+
+    ND ((stderr, "%p _cairo_quartz_surface_paint op %d source->type %d\n",
+	 extents->surface, extents->op, extents->source_pattern.base.type));
+
+    rv = _cairo_quartz_setup_state (&state, extents);
+    if (unlikely (rv))
+	goto BAIL;
+
+    _cairo_quartz_draw_source (&state, extents->op);
+
+BAIL:
+    _cairo_quartz_teardown_state (&state, extents);
+
+    ND ((stderr, "-- paint\n"));
+    return rv;
+}
+
+static cairo_int_status_t
+_cairo_quartz_cg_mask_with_surface (cairo_composite_rectangles_t *extents,
+				    cairo_surface_t              *mask_surf,
+				    const cairo_matrix_t         *mask_mat,
+				    CGInterpolationQuality        filter)
+{
+    CGRect rect;
+    CGImageRef img;
+    cairo_status_t status;
+    CGAffineTransform mask_matrix;
+    cairo_quartz_drawing_state_t state;
+    cairo_format_t format = _cairo_format_from_content (extents->surface->content);
+    cairo_rectangle_int_t dest_extents;
+    cairo_matrix_t m = *mask_mat;
+
+    _cairo_surface_get_extents (extents->surface, &dest_extents);
+    status = _cairo_surface_to_cgimage (mask_surf, &dest_extents, format,
+					&m, extents->clip, &img);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_quartz_setup_state (&state, extents);
+    if (unlikely (status))
+	goto BAIL;
+
+    rect = CGRectMake (0.0, 0.0, CGImageGetWidth (img), CGImageGetHeight (img));
+    _cairo_quartz_cairo_matrix_to_quartz (&m, &mask_matrix);
+
+    /* ClipToMask is essentially drawing an image, so we need to flip the CTM
+     * to get the image to appear oriented the right way */
+    CGContextConcatCTM (state.cgMaskContext, CGAffineTransformInvert (mask_matrix));
+    CGContextTranslateCTM (state.cgMaskContext, 0.0, rect.size.height);
+    CGContextScaleCTM (state.cgMaskContext, 1.0, -1.0);
+
+    state.filter = filter;
+
+    CGContextSetInterpolationQuality (state.cgMaskContext, filter);
+    CGContextSetShouldAntialias (state.cgMaskContext, filter != kCGInterpolationNone);
+
+    CGContextClipToMask (state.cgMaskContext, rect, img);
+
+    CGContextScaleCTM (state.cgMaskContext, 1.0, -1.0);
+    CGContextTranslateCTM (state.cgMaskContext, 0.0, -rect.size.height);
+    CGContextConcatCTM (state.cgMaskContext, mask_matrix);
+
+    _cairo_quartz_draw_source (&state, extents->op);
+
+BAIL:
+    _cairo_quartz_teardown_state (&state, extents);
+
+    CGImageRelease (img);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_quartz_cg_mask_with_solid (cairo_quartz_surface_t *surface,
+				  cairo_composite_rectangles_t *extents)
+{
+    cairo_quartz_drawing_state_t state;
+    double alpha = extents->mask_pattern.solid.color.alpha;
+    cairo_status_t status;
+
+    status = _cairo_quartz_setup_state (&state, extents);
+    if (unlikely (status))
+	return status;
+
+    CGContextSetAlpha (surface->cgContext, alpha);
+    _cairo_quartz_draw_source (&state, extents->op);
+
+    _cairo_quartz_teardown_state (&state, extents);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_quartz_cg_mask (const cairo_compositor_t *compositor,
+		       cairo_composite_rectangles_t *extents)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *)extents->surface;
+    const cairo_pattern_t *source = &extents->source_pattern.base;
+    const cairo_pattern_t *mask = &extents->mask_pattern.base;
+    cairo_surface_t *mask_surf;
+    cairo_matrix_t matrix;
+    cairo_status_t status;
+    cairo_bool_t need_temp;
+    CGInterpolationQuality filter;
+
+    ND ((stderr, "%p _cairo_quartz_surface_mask op %d source->type %d mask->type %d\n",
+	 extents->surface, extents->op, extents->source_pattern.base.type,
+	 extents->mask_pattern.base.type));
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SOLID)
+	return _cairo_quartz_cg_mask_with_solid (surface, extents);
+
+    need_temp = (mask->type   != CAIRO_PATTERN_TYPE_SURFACE ||
+		 mask->extend != CAIRO_EXTEND_NONE);
+
+    filter = _cairo_quartz_filter_to_quartz (source->filter);
+
+    if (! need_temp) {
+	mask_surf = extents->mask_pattern.surface.surface;
+
+	/* When an opaque surface used as a mask in Quartz, its
+	 * luminosity is used as the alpha value, so we con only use
+	 * surfaces with alpha without creating a temporary mask. */
+	need_temp = ! (mask_surf->content & CAIRO_CONTENT_ALPHA);
+    }
+
+    if (! need_temp) {
+	CGInterpolationQuality mask_filter;
+	cairo_bool_t simple_transform;
+
+	matrix = mask->matrix;
+
+	mask_filter = _cairo_quartz_filter_to_quartz (mask->filter);
+	if (mask_filter == kCGInterpolationNone) {
+	    simple_transform = _cairo_matrix_is_translation (&matrix);
+	    if (simple_transform) {
+		matrix.x0 = ceil (matrix.x0 - 0.5);
+		matrix.y0 = ceil (matrix.y0 - 0.5);
+	    }
+	} else {
+	    simple_transform = _cairo_matrix_is_integer_translation (&matrix,
+								     NULL,
+								     NULL);
+	}
+
+	/* Quartz only allows one interpolation to be set for mask and
+	 * source, so we can skip the temp surface only if the source
+	 * filtering makes the mask look correct. */
+	if (source->type == CAIRO_PATTERN_TYPE_SURFACE)
+	    need_temp = ! (simple_transform || filter == mask_filter);
+	else
+	    filter = mask_filter;
+    }
+
+    if (need_temp) {
+	/* Render the mask to a surface */
+	mask_surf = _cairo_quartz_surface_create_similar (surface,
+							  CAIRO_CONTENT_ALPHA,
+							  surface->extents.width,
+							  surface->extents.height);
+	status = mask_surf->status;
+	if (unlikely (status))
+	    goto BAIL;
+
+	/* mask_surf is clear, so use OVER instead of SOURCE to avoid a
+	 * temporary layer or fallback to cairo-image. */
+	status = _cairo_surface_paint (mask_surf, CAIRO_OPERATOR_OVER, mask, NULL);
+	if (unlikely (status))
+	    goto BAIL;
+
+	cairo_matrix_init_identity (&matrix);
+    }
+
+    status = _cairo_quartz_cg_mask_with_surface (extents,
+						 mask_surf, &matrix, filter);
+
+BAIL:
+
+    if (need_temp)
+	cairo_surface_destroy (mask_surf);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_quartz_cg_fill (const cairo_compositor_t *compositor,
+		       cairo_composite_rectangles_t *extents,
+		       const cairo_path_fixed_t *path,
+		       cairo_fill_rule_t fill_rule,
+		       double tolerance,
+		       cairo_antialias_t antialias)
+{
+    cairo_quartz_drawing_state_t state;
+    cairo_int_status_t rv = CAIRO_STATUS_SUCCESS;
+
+    ND ((stderr, "%p _cairo_quartz_surface_fill op %d source->type %d\n",
+	 extents->surface, extents->op, extents->source_pattern.base.type));
+
+    rv = _cairo_quartz_setup_state (&state, extents);
+    if (unlikely (rv))
+	goto BAIL;
+
+    CGContextSetShouldAntialias (state.cgMaskContext, (antialias != CAIRO_ANTIALIAS_NONE));
+
+    _cairo_quartz_cairo_path_to_quartz_context (path, state.cgMaskContext);
+
+    if (state.action == DO_DIRECT) {
+	assert (state.cgDrawContext == state.cgMaskContext);
+	if (fill_rule == CAIRO_FILL_RULE_WINDING)
+	    CGContextFillPath (state.cgMaskContext);
+	else
+	    CGContextEOFillPath (state.cgMaskContext);
+    } else {
+	if (fill_rule == CAIRO_FILL_RULE_WINDING)
+	    CGContextClip (state.cgMaskContext);
+	else
+	    CGContextEOClip (state.cgMaskContext);
+
+	_cairo_quartz_draw_source (&state, extents->op);
+    }
+
+BAIL:
+    _cairo_quartz_teardown_state (&state, extents);
+
+    ND ((stderr, "-- fill\n"));
+    return rv;
+}
+
+static cairo_int_status_t
+_cairo_quartz_cg_stroke (const cairo_compositor_t *compositor,
+			 cairo_composite_rectangles_t *extents,
+			 const cairo_path_fixed_t *path,
+			 const cairo_stroke_style_t *style,
+			 const cairo_matrix_t *ctm,
+			 const cairo_matrix_t *ctm_inverse,
+			 double tolerance,
+			 cairo_antialias_t antialias)
+{
+    cairo_quartz_drawing_state_t state;
+    cairo_int_status_t rv = CAIRO_STATUS_SUCCESS;
+    CGAffineTransform strokeTransform, invStrokeTransform;
+
+    ND ((stderr, "%p _cairo_quartz_surface_stroke op %d source->type %d\n",
+	 extents->surface, extents->op, extents->source_pattern.base.type));
+
+    rv = _cairo_quartz_setup_state (&state, extents);
+    if (unlikely (rv))
+	goto BAIL;
+
+    // Turning antialiasing off used to cause misrendering with
+    // single-pixel lines (e.g. 20,10.5 -> 21,10.5 end up being rendered as 2 pixels).
+    // That's been since fixed in at least 10.5, and in the latest 10.4 dot releases.
+    CGContextSetShouldAntialias (state.cgMaskContext, (antialias != CAIRO_ANTIALIAS_NONE));
+    CGContextSetLineWidth (state.cgMaskContext, style->line_width);
+    CGContextSetLineCap (state.cgMaskContext, _cairo_quartz_cairo_line_cap_to_quartz (style->line_cap));
+    CGContextSetLineJoin (state.cgMaskContext, _cairo_quartz_cairo_line_join_to_quartz (style->line_join));
+    CGContextSetMiterLimit (state.cgMaskContext, style->miter_limit);
+
+    if (style->dash && style->num_dashes) {
+	cairo_quartz_float_t sdash[CAIRO_STACK_ARRAY_LENGTH (cairo_quartz_float_t)];
+	cairo_quartz_float_t *fdash = sdash;
+	unsigned int max_dashes = style->num_dashes;
+	unsigned int k;
+
+	if (style->num_dashes%2)
+	    max_dashes *= 2;
+	if (max_dashes > ARRAY_LENGTH (sdash))
+	    fdash = _cairo_malloc_ab (max_dashes, sizeof (cairo_quartz_float_t));
+	if (unlikely (fdash == NULL)) {
+	    rv = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto BAIL;
+	}
+
+	for (k = 0; k < max_dashes; k++)
+	    fdash[k] = (cairo_quartz_float_t) style->dash[k % style->num_dashes];
+
+	CGContextSetLineDash (state.cgMaskContext, style->dash_offset, fdash, max_dashes);
+	if (fdash != sdash)
+	    free (fdash);
+    } else
+	CGContextSetLineDash (state.cgMaskContext, 0, NULL, 0);
+
+    _cairo_quartz_cairo_path_to_quartz_context (path, state.cgMaskContext);
+
+    _cairo_quartz_cairo_matrix_to_quartz (ctm, &strokeTransform);
+    CGContextConcatCTM (state.cgMaskContext, strokeTransform);
+
+    if (state.action == DO_DIRECT) {
+	assert (state.cgDrawContext == state.cgMaskContext);
+	CGContextStrokePath (state.cgMaskContext);
+    } else {
+	CGContextReplacePathWithStrokedPath (state.cgMaskContext);
+	CGContextClip (state.cgMaskContext);
+
+	_cairo_quartz_cairo_matrix_to_quartz (ctm_inverse, &invStrokeTransform);
+	CGContextConcatCTM (state.cgMaskContext, invStrokeTransform);
+
+	_cairo_quartz_draw_source (&state, extents->op);
+    }
+
+BAIL:
+    _cairo_quartz_teardown_state (&state, extents);
+
+    ND ((stderr, "-- stroke\n"));
+    return rv;
+}
+
+#if CAIRO_HAS_QUARTZ_FONT
+static cairo_int_status_t
+_cairo_quartz_cg_glyphs (const cairo_compositor_t *compositor,
+			 cairo_composite_rectangles_t *extents,
+			 cairo_scaled_font_t *scaled_font,
+			 cairo_glyph_t *glyphs,
+			 int num_glyphs,
+			 cairo_bool_t overlap)
+{
+    CGAffineTransform textTransform, invTextTransform;
+    CGGlyph glyphs_static[CAIRO_STACK_ARRAY_LENGTH (CGSize)];
+    CGSize cg_advances_static[CAIRO_STACK_ARRAY_LENGTH (CGSize)];
+    CGGlyph *cg_glyphs = &glyphs_static[0];
+    CGSize *cg_advances = &cg_advances_static[0];
+    COMPILE_TIME_ASSERT (sizeof (CGGlyph) <= sizeof (CGSize));
+
+    cairo_quartz_drawing_state_t state;
+    cairo_int_status_t rv = CAIRO_INT_STATUS_UNSUPPORTED;
+    cairo_quartz_float_t xprev, yprev;
+    int i;
+    CGFontRef cgfref = NULL;
+
+    cairo_bool_t didForceFontSmoothing = FALSE;
+
+    if (cairo_scaled_font_get_type (scaled_font) != CAIRO_FONT_TYPE_QUARTZ)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    rv = _cairo_quartz_setup_state (&state, extents);
+    if (unlikely (rv))
+	goto BAIL;
+
+    if (state.action == DO_DIRECT) {
+	assert (state.cgDrawContext == state.cgMaskContext);
+	CGContextSetTextDrawingMode (state.cgMaskContext, kCGTextFill);
+    } else {
+	CGContextSetTextDrawingMode (state.cgMaskContext, kCGTextClip);
+    }
+
+    /* this doesn't addref */
+    cgfref = _cairo_quartz_scaled_font_get_cg_font_ref (scaled_font);
+    CGContextSetFont (state.cgMaskContext, cgfref);
+    CGContextSetFontSize (state.cgMaskContext, 1.0);
+
+    switch (scaled_font->options.antialias) {
+	case CAIRO_ANTIALIAS_SUBPIXEL:
+	case CAIRO_ANTIALIAS_BEST:
+	    CGContextSetShouldAntialias (state.cgMaskContext, TRUE);
+	    CGContextSetShouldSmoothFonts (state.cgMaskContext, TRUE);
+	    if (CGContextSetAllowsFontSmoothingPtr &&
+		!CGContextGetAllowsFontSmoothingPtr (state.cgMaskContext))
+	    {
+		didForceFontSmoothing = TRUE;
+		CGContextSetAllowsFontSmoothingPtr (state.cgMaskContext, TRUE);
+	    }
+	    break;
+	case CAIRO_ANTIALIAS_NONE:
+	    CGContextSetShouldAntialias (state.cgMaskContext, FALSE);
+	    break;
+	case CAIRO_ANTIALIAS_GRAY:
+	case CAIRO_ANTIALIAS_GOOD:
+	case CAIRO_ANTIALIAS_FAST:
+	    CGContextSetShouldAntialias (state.cgMaskContext, TRUE);
+	    CGContextSetShouldSmoothFonts (state.cgMaskContext, FALSE);
+	    break;
+	case CAIRO_ANTIALIAS_DEFAULT:
+	    /* Don't do anything */
+	    break;
+    }
+
+    if (num_glyphs > ARRAY_LENGTH (glyphs_static)) {
+	cg_glyphs = (CGGlyph*) _cairo_malloc_ab (num_glyphs, sizeof (CGGlyph) + sizeof (CGSize));
+	if (unlikely (cg_glyphs == NULL)) {
+	    rv = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto BAIL;
+	}
+
+	cg_advances = (CGSize*) (cg_glyphs + num_glyphs);
+    }
+
+    /* scale(1,-1) * scaled_font->scale */
+    textTransform = CGAffineTransformMake (scaled_font->scale.xx,
+					   scaled_font->scale.yx,
+					   -scaled_font->scale.xy,
+					   -scaled_font->scale.yy,
+					   0.0, 0.0);
+
+    /* scaled_font->scale_inverse * scale(1,-1) */
+    invTextTransform = CGAffineTransformMake (scaled_font->scale_inverse.xx,
+					      -scaled_font->scale_inverse.yx,
+					      scaled_font->scale_inverse.xy,
+					      -scaled_font->scale_inverse.yy,
+					      0.0, 0.0);
+
+    CGContextSetTextPosition (state.cgMaskContext, 0.0, 0.0);
+    CGContextSetTextMatrix (state.cgMaskContext, CGAffineTransformIdentity);
+
+    /* Convert our glyph positions to glyph advances.  We need n-1 advances,
+     * since the advance at index 0 is applied after glyph 0. */
+    xprev = glyphs[0].x;
+    yprev = glyphs[0].y;
+
+    cg_glyphs[0] = glyphs[0].index;
+
+    for (i = 1; i < num_glyphs; i++) {
+	cairo_quartz_float_t xf = glyphs[i].x;
+	cairo_quartz_float_t yf = glyphs[i].y;
+	cg_glyphs[i] = glyphs[i].index;
+	cg_advances[i - 1] = CGSizeApplyAffineTransform (CGSizeMake (xf - xprev, yf - yprev), invTextTransform);
+	xprev = xf;
+	yprev = yf;
+    }
+
+    /* Translate to the first glyph's position before drawing */
+    CGContextTranslateCTM (state.cgMaskContext, glyphs[0].x, glyphs[0].y);
+    CGContextConcatCTM (state.cgMaskContext, textTransform);
+
+    CGContextShowGlyphsWithAdvances (state.cgMaskContext,
+				     cg_glyphs,
+				     cg_advances,
+				     num_glyphs);
+
+    CGContextConcatCTM (state.cgMaskContext, invTextTransform);
+    CGContextTranslateCTM (state.cgMaskContext, -glyphs[0].x, -glyphs[0].y);
+
+    if (state.action != DO_DIRECT)
+	_cairo_quartz_draw_source (&state, extents->op);
+
+BAIL:
+    if (didForceFontSmoothing)
+	CGContextSetAllowsFontSmoothingPtr (state.cgMaskContext, FALSE);
+
+    _cairo_quartz_teardown_state (&state, extents);
+
+    if (cg_glyphs != glyphs_static)
+	free (cg_glyphs);
+
+    return rv;
+}
+#endif /* CAIRO_HAS_QUARTZ_FONT */
+
+static const cairo_compositor_t _cairo_quartz_cg_compositor = {
+    &_cairo_fallback_compositor,
+
+    _cairo_quartz_cg_paint,
+    _cairo_quartz_cg_mask,
+    _cairo_quartz_cg_stroke,
+    _cairo_quartz_cg_fill,
+#if CAIRO_HAS_QUARTZ_FONT
+    _cairo_quartz_cg_glyphs,
+#else
+    NULL,
+#endif
+};
+
+static cairo_int_status_t
+_cairo_quartz_surface_paint (void *surface,
+			     cairo_operator_t op,
+			     const cairo_pattern_t *source,
+			     const cairo_clip_t *clip)
+{
+    return _cairo_compositor_paint (&_cairo_quartz_cg_compositor,
+				    surface, op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_surface_mask (void *surface,
+			    cairo_operator_t op,
+			    const cairo_pattern_t *source,
+			    const cairo_pattern_t *mask,
+			    const cairo_clip_t *clip)
+{
+    return _cairo_compositor_mask (&_cairo_quartz_cg_compositor,
+				   surface, op, source, mask,
+				   clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_surface_fill (void *surface,
+			    cairo_operator_t op,
+			    const cairo_pattern_t *source,
+			    const cairo_path_fixed_t *path,
+			    cairo_fill_rule_t fill_rule,
+			    double tolerance,
+			    cairo_antialias_t antialias,
+			    const cairo_clip_t *clip)
+{
+    return _cairo_compositor_fill (&_cairo_quartz_cg_compositor,
+				   surface, op, source, path,
+				   fill_rule, tolerance, antialias,
+				   clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_surface_stroke (void *surface,
+			      cairo_operator_t op,
+			      const cairo_pattern_t *source,
+			      const cairo_path_fixed_t *path,
+			      const cairo_stroke_style_t *style,
+			      const cairo_matrix_t *ctm,
+			      const cairo_matrix_t *ctm_inverse,
+			      double tolerance,
+			      cairo_antialias_t antialias,
+			      const cairo_clip_t *clip)
+{
+    return _cairo_compositor_stroke (&_cairo_quartz_cg_compositor,
+				     surface, op, source, path,
+				     style, ctm,ctm_inverse,
+				     tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_quartz_surface_glyphs (void *surface,
+			      cairo_operator_t op,
+			      const cairo_pattern_t *source,
+			      cairo_glyph_t *glyphs,
+			      int num_glyphs,
+			      cairo_scaled_font_t *scaled_font,
+			      const cairo_clip_t *clip)
+{
+    return _cairo_compositor_glyphs (&_cairo_quartz_cg_compositor,
+				     surface, op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
+
+static cairo_status_t
+_cairo_quartz_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+						   cairo_path_fixed_t *path,
+						   cairo_fill_rule_t fill_rule,
+						   double tolerance,
+						   cairo_antialias_t antialias)
+{
+    cairo_quartz_surface_t *surface =
+	cairo_container_of (clipper, cairo_quartz_surface_t, clipper);
+
+    ND ((stderr, "%p _cairo_quartz_surface_intersect_clip_path path: %p\n", surface, path));
+
+    if (IS_EMPTY (surface))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (path == NULL) {
+	/* If we're being asked to reset the clip, we can only do it
+	 * by restoring the gstate to our previous saved one, and
+	 * saving it again.
+	 *
+	 * Note that this assumes that ALL quartz surface creation
+	 * functions will do a SaveGState first; we do this in create_internal.
+	 */
+	CGContextRestoreGState (surface->cgContext);
+	CGContextSaveGState (surface->cgContext);
+    } else {
+	CGContextSetShouldAntialias (surface->cgContext, (antialias != CAIRO_ANTIALIAS_NONE));
+
+	_cairo_quartz_cairo_path_to_quartz_context (path, surface->cgContext);
+
+	if (fill_rule == CAIRO_FILL_RULE_WINDING)
+	    CGContextClip (surface->cgContext);
+	else
+	    CGContextEOClip (surface->cgContext);
+    }
+
+    ND ((stderr, "-- intersect_clip_path\n"));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+// XXXtodo implement show_page; need to figure out how to handle begin/end
+
+static const struct _cairo_surface_backend cairo_quartz_surface_backend = {
+    CAIRO_SURFACE_TYPE_QUARTZ,
+    _cairo_quartz_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_quartz_surface_create_similar,
+    NULL, /* similar image */
+    _cairo_quartz_surface_map_to_image,
+    _cairo_quartz_surface_unmap_image,
+
+    _cairo_surface_default_source,
+    _cairo_quartz_surface_acquire_source_image,
+    _cairo_quartz_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_quartz_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_quartz_surface_paint,
+    _cairo_quartz_surface_mask,
+    _cairo_quartz_surface_stroke,
+    _cairo_quartz_surface_fill,
+    NULL,  /* fill-stroke */
+    _cairo_quartz_surface_glyphs,
+};
+
+cairo_quartz_surface_t *
+_cairo_quartz_surface_create_internal (CGContextRef cgContext,
+				       cairo_content_t content,
+				       unsigned int width,
+				       unsigned int height)
+{
+    cairo_quartz_surface_t *surface;
+
+    quartz_ensure_symbols ();
+
+    /* Init the base surface */
+    surface = _cairo_malloc (sizeof (cairo_quartz_surface_t));
+    if (unlikely (surface == NULL))
+	return (cairo_quartz_surface_t*) _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    memset (surface, 0, sizeof (cairo_quartz_surface_t));
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_quartz_surface_backend,
+			 NULL, /* device */
+			 content,
+			 FALSE); /* is_vector */
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_quartz_surface_clipper_intersect_clip_path);
+
+    /* Save our extents */
+    surface->extents.x = surface->extents.y = 0;
+    surface->extents.width = width;
+    surface->extents.height = height;
+    surface->virtual_extents = surface->extents;
+
+    if (IS_EMPTY (surface)) {
+	surface->cgContext = NULL;
+	surface->cgContextBaseCTM = CGAffineTransformIdentity;
+	surface->imageData = NULL;
+	surface->base.is_clear = TRUE;
+	return surface;
+    }
+
+    /* Save so we can always get back to a known-good CGContext -- this is
+     * required for proper behaviour of intersect_clip_path(NULL)
+     */
+    CGContextSaveGState (cgContext);
+
+    surface->cgContext = cgContext;
+    surface->cgContextBaseCTM = CGContextGetCTM (cgContext);
+
+    surface->imageData = NULL;
+    surface->imageSurfaceEquiv = NULL;
+
+    return surface;
+}
+
+/**
+ * cairo_quartz_surface_create_for_cg_context:
+ * @cgContext: the existing CGContext for which to create the surface
+ * @width: width of the surface, in pixels
+ * @height: height of the surface, in pixels
+ *
+ * Creates a Quartz surface that wraps the given CGContext.  The
+ * CGContext is assumed to be in the standard Cairo coordinate space
+ * (that is, with the origin at the upper left and the Y axis
+ * increasing downward).  If the CGContext is in the Quartz coordinate
+ * space (with the origin at the bottom left), then it should be
+ * flipped before this function is called.  The flip can be accomplished
+ * using a translate and a scale; for example:
+ *
+ * <informalexample><programlisting>
+ * CGContextTranslateCTM (cgContext, 0.0, height);
+ * CGContextScaleCTM (cgContext, 1.0, -1.0);
+ * </programlisting></informalexample>
+ *
+ * All Cairo operations are implemented in terms of Quartz operations,
+ * as long as Quartz-compatible elements are used (such as Quartz fonts).
+ *
+ * Return value: the newly created Cairo surface.
+ *
+ * Since: 1.6
+ **/
+
+cairo_surface_t *
+cairo_quartz_surface_create_for_cg_context (CGContextRef cgContext,
+					    unsigned int width,
+					    unsigned int height)
+{
+    cairo_quartz_surface_t *surf;
+
+    surf = _cairo_quartz_surface_create_internal (cgContext, CAIRO_CONTENT_COLOR_ALPHA,
+						  width, height);
+    if (likely (!surf->base.status))
+	CGContextRetain (cgContext);
+
+    return &surf->base;
+}
+
+/**
+ * cairo_quartz_surface_create:
+ * @format: format of pixels in the surface to create
+ * @width: width of the surface, in pixels
+ * @height: height of the surface, in pixels
+ *
+ * Creates a Quartz surface backed by a CGBitmap.  The surface is
+ * created using the Device RGB (or Device Gray, for A8) color space.
+ * All Cairo operations, including those that require software
+ * rendering, will succeed on this surface.
+ *
+ * Return value: the newly created surface.
+ *
+ * Since: 1.6
+ **/
+cairo_surface_t *
+cairo_quartz_surface_create (cairo_format_t format,
+			     unsigned int width,
+			     unsigned int height)
+{
+    cairo_quartz_surface_t *surf;
+    CGContextRef cgc;
+    CGColorSpaceRef cgColorspace;
+    CGBitmapInfo bitinfo;
+    void *imageData;
+    int stride;
+    int bitsPerComponent;
+
+    if (!_cairo_quartz_verify_surface_size (width, height))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    if (width == 0 || height == 0) {
+	return &_cairo_quartz_surface_create_internal (NULL, _cairo_content_from_format (format),
+						       width, height)->base;
+    }
+
+    if (format == CAIRO_FORMAT_ARGB32 ||
+	format == CAIRO_FORMAT_RGB24)
+    {
+	cgColorspace = CGColorSpaceCreateDeviceRGB ();
+	bitinfo = kCGBitmapByteOrder32Host;
+	if (format == CAIRO_FORMAT_ARGB32)
+	    bitinfo |= kCGImageAlphaPremultipliedFirst;
+	else
+	    bitinfo |= kCGImageAlphaNoneSkipFirst;
+	bitsPerComponent = 8;
+	stride = width * 4;
+    } else if (format == CAIRO_FORMAT_A8) {
+	cgColorspace = NULL;
+	stride = width;
+	bitinfo = kCGImageAlphaOnly;
+	bitsPerComponent = 8;
+    } else if (format == CAIRO_FORMAT_A1) {
+	/* I don't think we can usefully support this, as defined by
+	 * cairo_format_t -- these are 1-bit pixels stored in 32-bit
+	 * quantities.
+	 */
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    } else {
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    }
+
+    /* The Apple docs say that for best performance, the stride and the data
+     * pointer should be 16-byte aligned.  malloc already aligns to 16-bytes,
+     * so we don't have to anything special on allocation.
+     */
+    stride = (stride + 15) & ~15;
+
+    imageData = _cairo_malloc_ab (height, stride);
+    if (unlikely (!imageData)) {
+	CGColorSpaceRelease (cgColorspace);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    /* zero the memory to match the image surface behaviour */
+    memset (imageData, 0, height * stride);
+
+    cgc = CGBitmapContextCreate (imageData,
+				 width,
+				 height,
+				 bitsPerComponent,
+				 stride,
+				 cgColorspace,
+				 bitinfo);
+    CGColorSpaceRelease (cgColorspace);
+
+    if (!cgc) {
+	free (imageData);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    /* flip the Y axis */
+    CGContextTranslateCTM (cgc, 0.0, height);
+    CGContextScaleCTM (cgc, 1.0, -1.0);
+
+    surf = _cairo_quartz_surface_create_internal (cgc, _cairo_content_from_format (format),
+						  width, height);
+    if (surf->base.status) {
+	CGContextRelease (cgc);
+	free (imageData);
+	// create_internal will have set an error
+	return &surf->base;
+    }
+
+    surf->base.is_clear = TRUE;
+
+    surf->imageData = imageData;
+    surf->imageSurfaceEquiv = cairo_image_surface_create_for_data (imageData, format, width, height, stride);
+
+    return &surf->base;
+}
+
+/**
+ * cairo_quartz_surface_get_cg_context:
+ * @surface: the Cairo Quartz surface
+ *
+ * Returns the CGContextRef that the given Quartz surface is backed
+ * by.
+ *
+ * A call to cairo_surface_flush() is required before using the
+ * CGContextRef to ensure that all pending drawing operations are
+ * finished and to restore any temporary modification cairo has made
+ * to its state. A call to cairo_surface_mark_dirty() is required
+ * after the state or the content of the CGContextRef has been
+ * modified.
+ *
+ * Return value: the CGContextRef for the given surface.
+ *
+ * Since: 1.6
+ **/
+CGContextRef
+cairo_quartz_surface_get_cg_context (cairo_surface_t *surface)
+{
+    if (surface && _cairo_surface_is_quartz (surface)) {
+	cairo_quartz_surface_t *quartz = (cairo_quartz_surface_t *) surface;
+	return quartz->cgContext;
+    } else
+	return NULL;
+}
+
+/**
+ * _cairo_surface_is_quartz:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is a #cairo_quartz_surface_t
+ *
+ * Return value: True if the surface is an quartz surface
+ **/
+cairo_bool_t
+_cairo_surface_is_quartz (const cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_quartz_surface_backend;
+}
+
+/* Debug stuff */
+
+#ifdef QUARTZ_DEBUG
+
+#include <Movies.h>
+
+void ExportCGImageToPNGFile (CGImageRef inImageRef, char* dest)
+{
+    Handle  dataRef = NULL;
+    OSType  dataRefType;
+    CFStringRef inPath = CFStringCreateWithCString (NULL, dest, kCFStringEncodingASCII);
+
+    GraphicsExportComponent grex = 0;
+    unsigned long sizeWritten;
+
+    ComponentResult result;
+
+    // create the data reference
+    result = QTNewDataReferenceFromFullPathCFString (inPath, kQTNativeDefaultPathStyle,
+						     0, &dataRef, &dataRefType);
+
+    if (NULL != dataRef && noErr == result) {
+	// get the PNG exporter
+	result = OpenADefaultComponent (GraphicsExporterComponentType, kQTFileTypePNG,
+					&grex);
+
+	if (grex) {
+	    // tell the exporter where to find its source image
+	    result = GraphicsExportSetInputCGImage (grex, inImageRef);
+
+	    if (noErr == result) {
+		// tell the exporter where to save the exporter image
+		result = GraphicsExportSetOutputDataReference (grex, dataRef,
+							       dataRefType);
+
+		if (noErr == result) {
+		    // write the PNG file
+		    result = GraphicsExportDoExport (grex, &sizeWritten);
+		}
+	    }
+
+	    // remember to close the component
+	    CloseComponent (grex);
+	}
+
+	// remember to dispose of the data reference handle
+	DisposeHandle (dataRef);
+    }
+}
+
+void
+quartz_image_to_png (CGImageRef imgref, char *dest)
+{
+    static int sctr = 0;
+    char sptr[] = "/Users/vladimir/Desktop/barXXXXX.png";
+
+    if (dest == NULL) {
+	fprintf (stderr, "** Writing %p to bar%d\n", imgref, sctr);
+	sprintf (sptr, "/Users/vladimir/Desktop/bar%d.png", sctr);
+	sctr++;
+	dest = sptr;
+    }
+
+    ExportCGImageToPNGFile (imgref, dest);
+}
+
+void
+quartz_surface_to_png (cairo_quartz_surface_t *nq, char *dest)
+{
+    static int sctr = 0;
+    char sptr[] = "/Users/vladimir/Desktop/fooXXXXX.png";
+
+    if (nq->base.type != CAIRO_SURFACE_TYPE_QUARTZ) {
+	fprintf (stderr, "** quartz_surface_to_png: surface %p isn't quartz!\n", nq);
+	return;
+    }
+
+    if (dest == NULL) {
+	fprintf (stderr, "** Writing %p to foo%d\n", nq, sctr);
+	sprintf (sptr, "/Users/vladimir/Desktop/foo%d.png", sctr);
+	sctr++;
+	dest = sptr;
+    }
+
+    CGImageRef imgref = CGBitmapContextCreateImage (nq->cgContext);
+    if (imgref == NULL) {
+	fprintf (stderr, "quartz surface at %p is not a bitmap context!\n", nq);
+	return;
+    }
+
+    ExportCGImageToPNGFile (imgref, dest);
+
+    CGImageRelease (imgref);
+}
+
+#endif /* QUARTZ_DEBUG */
diff --git a/libs/cairo-1.16.0/src/cairo-quartz.h b/libs/cairo-1.16.0/src/cairo-quartz.h
new file mode 100644
index 0000000..9e11e87
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-quartz.h
@@ -0,0 +1,82 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006, 2007 Mozilla Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation.
+ *
+ * Contributor(s):
+ *      Vladimir Vukicevic <vladimir@mozilla.com>
+ */
+
+#ifndef CAIRO_QUARTZ_H
+#define CAIRO_QUARTZ_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_QUARTZ_SURFACE
+
+#include <ApplicationServices/ApplicationServices.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_quartz_surface_create (cairo_format_t format,
+                             unsigned int width,
+                             unsigned int height);
+
+cairo_public cairo_surface_t *
+cairo_quartz_surface_create_for_cg_context (CGContextRef cgContext,
+                                            unsigned int width,
+                                            unsigned int height);
+
+cairo_public CGContextRef
+cairo_quartz_surface_get_cg_context (cairo_surface_t *surface);
+
+#if CAIRO_HAS_QUARTZ_FONT
+
+/*
+ * Quartz font support
+ */
+
+cairo_public cairo_font_face_t *
+cairo_quartz_font_face_create_for_cgfont (CGFontRef font);
+
+cairo_public cairo_font_face_t *
+cairo_quartz_font_face_create_for_atsu_font_id (ATSUFontID font_id);
+
+#endif /* CAIRO_HAS_QUARTZ_FONT */
+
+CAIRO_END_DECLS
+
+#else
+
+# error Cairo was not compiled with support for the quartz backend
+
+#endif /* CAIRO_HAS_QUARTZ_SURFACE */
+
+#endif /* CAIRO_QUARTZ_H */
diff --git a/libs/cairo-1.16.0/src/cairo-raster-source-pattern.c b/libs/cairo-1.16.0/src/cairo-raster-source-pattern.c
new file mode 100644
index 0000000..64520fe
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-raster-source-pattern.c
@@ -0,0 +1,430 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+#include "cairo-pattern-private.h"
+
+/**
+ * SECTION:cairo-raster-source
+ * @Title: Raster Sources
+ * @Short_Description: Supplying arbitrary image data
+ * @See_Also: #cairo_pattern_t
+ *
+ * The raster source provides the ability to supply arbitrary pixel data
+ * whilst rendering. The pixels are queried at the time of rasterisation
+ * by means of user callback functions, allowing for the ultimate
+ * flexibility. For example, in handling compressed image sources, you
+ * may keep a MRU cache of decompressed images and decompress sources on the
+ * fly and discard old ones to conserve memory.
+ *
+ * For the raster source to be effective, you must at least specify
+ * the acquire and release callbacks which are used to retrieve the pixel
+ * data for the region of interest and demark when it can be freed afterwards.
+ * Other callbacks are provided for when the pattern is copied temporarily
+ * during rasterisation, or more permanently as a snapshot in order to keep
+ * the pixel data available for printing.
+ **/
+
+cairo_surface_t *
+_cairo_raster_source_pattern_acquire (const cairo_pattern_t *abstract_pattern,
+				      cairo_surface_t *target,
+				      const cairo_rectangle_int_t *extents)
+{
+    cairo_raster_source_pattern_t *pattern =
+	(cairo_raster_source_pattern_t *) abstract_pattern;
+
+    if (pattern->acquire == NULL)
+	return NULL;
+
+    if (extents == NULL)
+	extents = &pattern->extents;
+
+    return pattern->acquire (&pattern->base, pattern->user_data,
+			     target, extents);
+}
+
+void
+_cairo_raster_source_pattern_release (const cairo_pattern_t *abstract_pattern,
+				      cairo_surface_t *surface)
+{
+    cairo_raster_source_pattern_t *pattern =
+	(cairo_raster_source_pattern_t *) abstract_pattern;
+
+    if (pattern->release == NULL)
+	return;
+
+    pattern->release (&pattern->base, pattern->user_data, surface);
+}
+
+cairo_status_t
+_cairo_raster_source_pattern_init_copy (cairo_pattern_t *abstract_pattern,
+					const cairo_pattern_t *other)
+{
+    cairo_raster_source_pattern_t *pattern =
+	(cairo_raster_source_pattern_t *) abstract_pattern;
+    cairo_status_t status;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pattern, sizeof (cairo_raster_source_pattern_t)));
+    memcpy(pattern, other, sizeof (cairo_raster_source_pattern_t));
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (pattern->copy)
+	status = pattern->copy (&pattern->base, pattern->user_data, other);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_raster_source_pattern_snapshot (cairo_pattern_t *abstract_pattern)
+{
+    cairo_raster_source_pattern_t *pattern =
+	(cairo_raster_source_pattern_t *) abstract_pattern;
+
+    if (pattern->snapshot == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    return pattern->snapshot (&pattern->base, pattern->user_data);
+}
+
+void
+_cairo_raster_source_pattern_finish (cairo_pattern_t *abstract_pattern)
+{
+    cairo_raster_source_pattern_t *pattern =
+	(cairo_raster_source_pattern_t *) abstract_pattern;
+
+    if (pattern->finish == NULL)
+	return;
+
+    pattern->finish (&pattern->base, pattern->user_data);
+}
+
+/* Public interface */
+
+/**
+ * cairo_pattern_create_raster_source:
+ * @user_data: the user data to be passed to all callbacks
+ * @content: content type for the pixel data that will be returned. Knowing
+ * the content type ahead of time is used for analysing the operation and
+ * picking the appropriate rendering path.
+ * @width: maximum size of the sample area
+ * @height: maximum size of the sample area
+ *
+ * Creates a new user pattern for providing pixel data.
+ *
+ * Use the setter functions to associate callbacks with the returned
+ * pattern.  The only mandatory callback is acquire.
+ *
+ * Return value: a newly created #cairo_pattern_t. Free with
+ *  cairo_pattern_destroy() when you are done using it.
+ *
+ * Since: 1.12
+ **/
+cairo_pattern_t *
+cairo_pattern_create_raster_source (void *user_data,
+				    cairo_content_t content,
+				    int width, int height)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    if (width < 0 || height < 0)
+	return _cairo_pattern_create_in_error (CAIRO_STATUS_INVALID_SIZE);
+
+    if (! CAIRO_CONTENT_VALID (content))
+	return _cairo_pattern_create_in_error (CAIRO_STATUS_INVALID_CONTENT);
+
+    pattern = calloc (1, sizeof (*pattern));
+    if (unlikely (pattern == NULL))
+	return _cairo_pattern_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_pattern_init (&pattern->base,
+			 CAIRO_PATTERN_TYPE_RASTER_SOURCE);
+    CAIRO_REFERENCE_COUNT_INIT (&pattern->base.ref_count, 1);
+
+    pattern->content = content;
+
+    pattern->extents.x = 0;
+    pattern->extents.y = 0;
+    pattern->extents.width  = width;
+    pattern->extents.height = height;
+
+    pattern->user_data = user_data;
+
+    return &pattern->base;
+}
+
+/**
+ * cairo_raster_source_pattern_set_callback_data:
+ * @pattern: the pattern to update
+ * @data: the user data to be passed to all callbacks
+ *
+ * Updates the user data that is provided to all callbacks.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_raster_source_pattern_set_callback_data (cairo_pattern_t *abstract_pattern,
+					       void *data)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    pattern->user_data = data;
+}
+
+/**
+ * cairo_raster_source_pattern_get_callback_data:
+ * @pattern: the pattern to update
+ *
+ * Queries the current user data.
+ *
+ * Return value: the current user-data passed to each callback
+ *
+ * Since: 1.12
+ **/
+void *
+cairo_raster_source_pattern_get_callback_data (cairo_pattern_t *abstract_pattern)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return NULL;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    return pattern->user_data;
+}
+
+/**
+ * cairo_raster_source_pattern_set_acquire:
+ * @pattern: the pattern to update
+ * @acquire: acquire callback
+ * @release: release callback
+ *
+ * Specifies the callbacks used to generate the image surface for a rendering
+ * operation (acquire) and the function used to cleanup that surface afterwards.
+ *
+ * The @acquire callback should create a surface (preferably an image
+ * surface created to match the target using
+ * cairo_surface_create_similar_image()) that defines at least the region
+ * of interest specified by extents. The surface is allowed to be the entire
+ * sample area, but if it does contain a subsection of the sample area,
+ * the surface extents should be provided by setting the device offset (along
+ * with its width and height) using cairo_surface_set_device_offset().
+ *
+ * Since: 1.12
+ **/
+void
+cairo_raster_source_pattern_set_acquire (cairo_pattern_t *abstract_pattern,
+					 cairo_raster_source_acquire_func_t acquire,
+					 cairo_raster_source_release_func_t release)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    pattern->acquire = acquire;
+    pattern->release = release;
+}
+
+/**
+ * cairo_raster_source_pattern_get_acquire:
+ * @pattern: the pattern to query
+ * @acquire: return value for the current acquire callback
+ * @release: return value for the current release callback
+ *
+ * Queries the current acquire and release callbacks.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_raster_source_pattern_get_acquire (cairo_pattern_t *abstract_pattern,
+					 cairo_raster_source_acquire_func_t *acquire,
+					 cairo_raster_source_release_func_t *release)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    if (acquire)
+	*acquire = pattern->acquire;
+    if (release)
+	*release = pattern->release;
+}
+
+/**
+ * cairo_raster_source_pattern_set_snapshot:
+ * @pattern: the pattern to update
+ * @snapshot: snapshot callback
+ *
+ * Sets the callback that will be used whenever a snapshot is taken of the
+ * pattern, that is whenever the current contents of the pattern should be
+ * preserved for later use. This is typically invoked whilst printing.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_raster_source_pattern_set_snapshot (cairo_pattern_t *abstract_pattern,
+					  cairo_raster_source_snapshot_func_t snapshot)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    pattern->snapshot = snapshot;
+}
+
+/**
+ * cairo_raster_source_pattern_get_snapshot:
+ * @pattern: the pattern to query
+ *
+ * Queries the current snapshot callback.
+ *
+ * Return value: the current snapshot callback
+ *
+ * Since: 1.12
+ **/
+cairo_raster_source_snapshot_func_t
+cairo_raster_source_pattern_get_snapshot (cairo_pattern_t *abstract_pattern)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return NULL;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    return pattern->snapshot;
+}
+
+/**
+ * cairo_raster_source_pattern_set_copy:
+ * @pattern: the pattern to update
+ * @copy: the copy callback
+ *
+ * Updates the copy callback which is used whenever a temporary copy of the
+ * pattern is taken.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_raster_source_pattern_set_copy (cairo_pattern_t *abstract_pattern,
+				      cairo_raster_source_copy_func_t copy)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    pattern->copy = copy;
+}
+
+/**
+ * cairo_raster_source_pattern_get_copy:
+ * @pattern: the pattern to query
+ *
+ * Queries the current copy callback.
+ *
+ * Return value: the current copy callback
+ *
+ * Since: 1.12
+ **/
+cairo_raster_source_copy_func_t
+cairo_raster_source_pattern_get_copy (cairo_pattern_t *abstract_pattern)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return NULL;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    return pattern->copy;
+}
+
+/**
+ * cairo_raster_source_pattern_set_finish:
+ * @pattern: the pattern to update
+ * @finish: the finish callback
+ *
+ * Updates the finish callback which is used whenever a pattern (or a copy
+ * thereof) will no longer be used.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_raster_source_pattern_set_finish (cairo_pattern_t *abstract_pattern,
+					cairo_raster_source_finish_func_t finish)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    pattern->finish = finish;
+}
+
+/**
+ * cairo_raster_source_pattern_get_finish:
+ * @pattern: the pattern to query
+ *
+ * Queries the current finish callback.
+ *
+ * Return value: the current finish callback
+ *
+ * Since: 1.12
+ **/
+cairo_raster_source_finish_func_t
+cairo_raster_source_pattern_get_finish (cairo_pattern_t *abstract_pattern)
+{
+    cairo_raster_source_pattern_t *pattern;
+
+    if (abstract_pattern->type != CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return NULL;
+
+    pattern = (cairo_raster_source_pattern_t *) abstract_pattern;
+    return pattern->finish;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-recording-surface-inline.h b/libs/cairo-1.16.0/src/cairo-recording-surface-inline.h
new file mode 100644
index 0000000..9002ccd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-recording-surface-inline.h
@@ -0,0 +1,68 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_RECORDING_SURFACE_INLINE_H
+#define CAIRO_RECORDING_SURFACE_INLINE_H
+
+#include "cairo-recording-surface-private.h"
+
+static inline cairo_bool_t
+_cairo_recording_surface_get_bounds (cairo_surface_t *surface,
+				     cairo_rectangle_t *extents)
+{
+    cairo_recording_surface_t *recording = (cairo_recording_surface_t *)surface;
+    if (recording->unbounded)
+	return FALSE;
+
+    *extents = recording->extents_pixels;
+    return TRUE;
+}
+
+/**
+ * _cairo_surface_is_recording:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is a #cairo_recording_surface_t
+ *
+ * Return value: %TRUE if the surface is a recording surface
+ **/
+static inline cairo_bool_t
+_cairo_surface_is_recording (const cairo_surface_t *surface)
+{
+    return surface->backend->type == CAIRO_SURFACE_TYPE_RECORDING;
+}
+
+#endif /* CAIRO_RECORDING_SURFACE_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-recording-surface-private.h b/libs/cairo-1.16.0/src/cairo-recording-surface-private.h
new file mode 100644
index 0000000..c1827f5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-recording-surface-private.h
@@ -0,0 +1,212 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_RECORDING_SURFACE_H
+#define CAIRO_RECORDING_SURFACE_H
+
+#include "cairoint.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-backend-private.h"
+
+typedef enum {
+    /* The 5 basic drawing operations. */
+    CAIRO_COMMAND_PAINT,
+    CAIRO_COMMAND_MASK,
+    CAIRO_COMMAND_STROKE,
+    CAIRO_COMMAND_FILL,
+    CAIRO_COMMAND_SHOW_TEXT_GLYPHS,
+
+    /* cairo_tag_begin()/cairo_tag_end() */
+    CAIRO_COMMAND_TAG,
+} cairo_command_type_t;
+
+typedef enum {
+    CAIRO_RECORDING_REGION_ALL,
+    CAIRO_RECORDING_REGION_NATIVE,
+    CAIRO_RECORDING_REGION_IMAGE_FALLBACK
+} cairo_recording_region_type_t;
+
+typedef struct _cairo_command_header {
+    cairo_command_type_t	 type;
+    cairo_recording_region_type_t region;
+    cairo_operator_t		 op;
+    cairo_rectangle_int_t	 extents;
+    cairo_clip_t		*clip;
+
+    int index;
+    struct _cairo_command_header *chain;
+} cairo_command_header_t;
+
+typedef struct _cairo_command_paint {
+    cairo_command_header_t       header;
+    cairo_pattern_union_t	 source;
+} cairo_command_paint_t;
+
+typedef struct _cairo_command_mask {
+    cairo_command_header_t       header;
+    cairo_pattern_union_t	 source;
+    cairo_pattern_union_t	 mask;
+} cairo_command_mask_t;
+
+typedef struct _cairo_command_stroke {
+    cairo_command_header_t       header;
+    cairo_pattern_union_t	 source;
+    cairo_path_fixed_t		 path;
+    cairo_stroke_style_t	 style;
+    cairo_matrix_t		 ctm;
+    cairo_matrix_t		 ctm_inverse;
+    double			 tolerance;
+    cairo_antialias_t		 antialias;
+} cairo_command_stroke_t;
+
+typedef struct _cairo_command_fill {
+    cairo_command_header_t       header;
+    cairo_pattern_union_t	 source;
+    cairo_path_fixed_t		 path;
+    cairo_fill_rule_t		 fill_rule;
+    double			 tolerance;
+    cairo_antialias_t		 antialias;
+} cairo_command_fill_t;
+
+typedef struct _cairo_command_show_text_glyphs {
+    cairo_command_header_t       header;
+    cairo_pattern_union_t	 source;
+    char			*utf8;
+    int				 utf8_len;
+    cairo_glyph_t		*glyphs;
+    unsigned int		 num_glyphs;
+    cairo_text_cluster_t	*clusters;
+    int				 num_clusters;
+    cairo_text_cluster_flags_t   cluster_flags;
+    cairo_scaled_font_t		*scaled_font;
+} cairo_command_show_text_glyphs_t;
+
+typedef struct _cairo_command_tag {
+    cairo_command_header_t       header;
+    cairo_bool_t                 begin;
+    char                        *tag_name;
+    char                        *attributes;
+    cairo_pattern_union_t	 source;
+    cairo_stroke_style_t	 style;
+    cairo_matrix_t		 ctm;
+    cairo_matrix_t		 ctm_inverse;
+} cairo_command_tag_t;
+
+typedef union _cairo_command {
+    cairo_command_header_t      header;
+
+    cairo_command_paint_t			paint;
+    cairo_command_mask_t			mask;
+    cairo_command_stroke_t			stroke;
+    cairo_command_fill_t			fill;
+    cairo_command_show_text_glyphs_t		show_text_glyphs;
+    cairo_command_tag_t                         tag;
+} cairo_command_t;
+
+typedef struct _cairo_recording_surface {
+    cairo_surface_t base;
+
+    /* A recording-surface is logically unbounded, but when used as a
+     * source we need to render it to an image, so we need a size at
+     * which to create that image. */
+    cairo_rectangle_t extents_pixels;
+    cairo_rectangle_int_t extents;
+    cairo_bool_t unbounded;
+
+    cairo_array_t commands;
+    unsigned int *indices;
+    unsigned int num_indices;
+    cairo_bool_t optimize_clears;
+    cairo_bool_t has_bilevel_alpha;
+    cairo_bool_t has_only_op_over;
+
+    struct bbtree {
+	cairo_box_t extents;
+	struct bbtree *left, *right;
+	cairo_command_header_t *chain;
+    } bbtree;
+} cairo_recording_surface_t;
+
+slim_hidden_proto (cairo_recording_surface_create);
+
+cairo_private cairo_int_status_t
+_cairo_recording_surface_get_path (cairo_surface_t	 *surface,
+				   cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_recording_surface_replay_one (cairo_recording_surface_t	*surface,
+				     long unsigned index,
+				     cairo_surface_t *target);
+
+cairo_private cairo_status_t
+_cairo_recording_surface_replay (cairo_surface_t *surface,
+				 cairo_surface_t *target);
+
+cairo_private cairo_status_t
+_cairo_recording_surface_replay_with_clip (cairo_surface_t *surface,
+					   const cairo_matrix_t *surface_transform,
+					   cairo_surface_t *target,
+					   const cairo_clip_t *target_clip);
+
+cairo_private cairo_status_t
+_cairo_recording_surface_replay_and_create_regions (cairo_surface_t *surface,
+						    const cairo_matrix_t *surface_transform,
+						    cairo_surface_t *target,
+						    cairo_bool_t surface_is_unbounded);
+cairo_private cairo_status_t
+_cairo_recording_surface_replay_region (cairo_surface_t			*surface,
+					const cairo_rectangle_int_t *surface_extents,
+					cairo_surface_t			*target,
+					cairo_recording_region_type_t	region);
+
+cairo_private cairo_status_t
+_cairo_recording_surface_get_bbox (cairo_recording_surface_t *recording,
+				   cairo_box_t *bbox,
+				   const cairo_matrix_t *transform);
+
+cairo_private cairo_status_t
+_cairo_recording_surface_get_ink_bbox (cairo_recording_surface_t *surface,
+				       cairo_box_t *bbox,
+				       const cairo_matrix_t *transform);
+
+cairo_private cairo_bool_t
+_cairo_recording_surface_has_only_bilevel_alpha (cairo_recording_surface_t *surface);
+
+cairo_private cairo_bool_t
+_cairo_recording_surface_has_only_op_over (cairo_recording_surface_t *surface);
+
+#endif /* CAIRO_RECORDING_SURFACE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-recording-surface.c b/libs/cairo-1.16.0/src/cairo-recording-surface.c
new file mode 100644
index 0000000..6df8b08
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-recording-surface.c
@@ -0,0 +1,2357 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2007 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Carl Worth <cworth@cworth.org>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+/**
+ * SECTION:cairo-recording
+ * @Title: Recording Surfaces
+ * @Short_Description: Records all drawing operations
+ * @See_Also: #cairo_surface_t
+ *
+ * A recording surface is a surface that records all drawing operations at
+ * the highest level of the surface backend interface, (that is, the
+ * level of paint, mask, stroke, fill, and show_text_glyphs). The recording
+ * surface can then be "replayed" against any target surface by using it
+ * as a source surface.
+ *
+ * If you want to replay a surface so that the results in target will be
+ * identical to the results that would have been obtained if the original
+ * operations applied to the recording surface had instead been applied to the
+ * target surface, you can use code like this:
+ * <informalexample><programlisting>
+ * cairo_t *cr;
+ *
+ * cr = cairo_create (target);
+ * cairo_set_source_surface (cr, recording_surface, 0.0, 0.0);
+ * cairo_paint (cr);
+ * cairo_destroy (cr);
+ * </programlisting></informalexample>
+ *
+ * A recording surface is logically unbounded, i.e. it has no implicit constraint
+ * on the size of the drawing surface. However, in practice this is rarely
+ * useful as you wish to replay against a particular target surface with
+ * known bounds. For this case, it is more efficient to specify the target
+ * extents to the recording surface upon creation.
+ *
+ * The recording phase of the recording surface is careful to snapshot all
+ * necessary objects (paths, patterns, etc.), in order to achieve
+ * accurate replay. The efficiency of the recording surface could be
+ * improved by improving the implementation of snapshot for the
+ * various objects. For example, it would be nice to have a
+ * copy-on-write implementation for _cairo_surface_snapshot.
+ **/
+
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-analysis-surface-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-combsort-inline.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-wrapper-private.h"
+#include "cairo-traps-private.h"
+
+typedef enum {
+    CAIRO_RECORDING_REPLAY,
+    CAIRO_RECORDING_CREATE_REGIONS
+} cairo_recording_replay_type_t;
+
+static const cairo_surface_backend_t cairo_recording_surface_backend;
+
+/**
+ * CAIRO_HAS_RECORDING_SURFACE:
+ *
+ * Defined if the recording surface backend is available.
+ * The recording surface backend is always built in.
+ * This macro was added for completeness in cairo 1.10.
+ *
+ * Since: 1.10
+ **/
+
+/* Currently all recording surfaces do have a size which should be passed
+ * in as the maximum size of any target surface against which the
+ * recording-surface will ever be replayed.
+ *
+ * XXX: The naming of "pixels" in the size here is a misnomer. It's
+ * actually a size in whatever device-space units are desired (again,
+ * according to the intended replay target).
+ */
+
+static int bbtree_left_or_right (struct bbtree *bbt,
+				 const cairo_box_t *box)
+{
+    int left, right;
+
+    if (bbt->left) {
+	cairo_box_t *e = &bbt->left->extents;
+	cairo_box_t b;
+
+	b.p1.x = MIN (e->p1.x, box->p1.x);
+	b.p1.y = MIN (e->p1.y, box->p1.y);
+	b.p2.x = MAX (e->p2.x, box->p2.x);
+	b.p2.y = MAX (e->p2.y, box->p2.y);
+
+	left = _cairo_fixed_integer_part (b.p2.x - b.p1.x) * _cairo_fixed_integer_part (b.p2.y - b.p1.y);
+	left -= _cairo_fixed_integer_part (e->p2.x - e->p1.x) * _cairo_fixed_integer_part (e->p2.y - e->p1.y);
+    } else
+	left = 0;
+
+    if (bbt->right) {
+	cairo_box_t *e = &bbt->right->extents;
+	cairo_box_t b;
+
+	b.p1.x = MIN (e->p1.x, box->p1.x);
+	b.p1.y = MIN (e->p1.y, box->p1.y);
+	b.p2.x = MAX (e->p2.x, box->p2.x);
+	b.p2.y = MAX (e->p2.y, box->p2.y);
+
+	right = _cairo_fixed_integer_part (b.p2.x - b.p1.x) * _cairo_fixed_integer_part (b.p2.y - b.p1.y);
+	right -= _cairo_fixed_integer_part (e->p2.x - e->p1.x) * _cairo_fixed_integer_part (e->p2.y - e->p1.y);
+    } else
+	right = 0;
+
+    return left <= right;
+}
+
+#define INVALID_CHAIN ((cairo_command_header_t *)-1)
+
+static struct bbtree *
+bbtree_new (const cairo_box_t *box, cairo_command_header_t *chain)
+{
+    struct bbtree *bbt = _cairo_malloc (sizeof (*bbt));
+    if (bbt == NULL)
+	return NULL;
+    bbt->extents = *box;
+    bbt->left = bbt->right = NULL;
+    bbt->chain = chain;
+    return bbt;
+}
+
+static void
+bbtree_init (struct bbtree *bbt, cairo_command_header_t *header)
+{
+    _cairo_box_from_rectangle (&bbt->extents, &header->extents);
+    bbt->chain = header;
+}
+
+static cairo_status_t
+bbtree_add (struct bbtree *bbt,
+	    cairo_command_header_t *header,
+	    const cairo_box_t *box)
+{
+    if (box->p1.x < bbt->extents.p1.x || box->p1.y < bbt->extents.p1.y ||
+	box->p2.x > bbt->extents.p2.x || box->p2.y > bbt->extents.p2.y)
+    {
+	if (bbt->chain) {
+	    if (bbtree_left_or_right (bbt, &bbt->extents)) {
+		if (bbt->left == NULL) {
+		    bbt->left = bbtree_new (&bbt->extents, bbt->chain);
+		    if (unlikely (bbt->left == NULL))
+			return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		} else
+		    bbtree_add (bbt->left, bbt->chain, &bbt->extents);
+	    } else {
+		if (bbt->right == NULL) {
+		    bbt->right = bbtree_new (&bbt->extents, bbt->chain);
+		    if (unlikely (bbt->right == NULL))
+			return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		} else
+		    bbtree_add (bbt->right, bbt->chain, &bbt->extents);
+	    }
+
+	    bbt->chain = NULL;
+	}
+
+	bbt->extents.p1.x = MIN (bbt->extents.p1.x, box->p1.x);
+	bbt->extents.p1.y = MIN (bbt->extents.p1.y, box->p1.y);
+	bbt->extents.p2.x = MAX (bbt->extents.p2.x, box->p2.x);
+	bbt->extents.p2.y = MAX (bbt->extents.p2.y, box->p2.y);
+    }
+
+    if (box->p1.x == bbt->extents.p1.x && box->p1.y == bbt->extents.p1.y &&
+	box->p2.x == bbt->extents.p2.x && box->p2.y == bbt->extents.p2.y)
+    {
+	cairo_command_header_t *last = header;
+	while (last->chain) /* expected to be infrequent */
+	    last = last->chain;
+	last->chain = bbt->chain;
+	bbt->chain = header;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (bbtree_left_or_right (bbt, box)) {
+	if (bbt->left == NULL) {
+	    bbt->left = bbtree_new (box, header);
+	    if (unlikely (bbt->left == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	} else
+	    return bbtree_add (bbt->left, header, box);
+    } else {
+	if (bbt->right == NULL) {
+	    bbt->right = bbtree_new (box, header);
+	    if (unlikely (bbt->right == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	} else
+	    return bbtree_add (bbt->right, header, box);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void bbtree_del (struct bbtree *bbt)
+{
+    if (bbt->left)
+	bbtree_del (bbt->left);
+    if (bbt->right)
+	bbtree_del (bbt->right);
+
+    free (bbt);
+}
+
+static cairo_bool_t box_outside (const cairo_box_t *a, const cairo_box_t *b)
+{
+    return
+	a->p1.x >= b->p2.x || a->p1.y >= b->p2.y ||
+	a->p2.x <= b->p1.x || a->p2.y <= b->p1.y;
+}
+
+static void
+bbtree_foreach_mark_visible (struct bbtree *bbt,
+			     const cairo_box_t *box,
+			     unsigned int **indices)
+{
+    cairo_command_header_t *chain;
+
+    for (chain = bbt->chain; chain; chain = chain->chain)
+	*(*indices)++ = chain->index;
+
+    if (bbt->left && ! box_outside (box, &bbt->left->extents))
+	bbtree_foreach_mark_visible (bbt->left, box, indices);
+    if (bbt->right && ! box_outside (box, &bbt->right->extents))
+	bbtree_foreach_mark_visible (bbt->right, box, indices);
+}
+
+static inline int intcmp (const unsigned int a, const unsigned int b)
+{
+    return a - b;
+}
+CAIRO_COMBSORT_DECLARE (sort_indices, unsigned int, intcmp)
+
+static inline int sizecmp (unsigned int a, unsigned int b, cairo_command_header_t **elements)
+{
+    const cairo_rectangle_int_t *r;
+
+    r = &elements[a]->extents;
+    a = r->width * r->height;
+
+    r = &elements[b]->extents;
+    b = r->width * r->height;
+
+    return b - a;
+}
+CAIRO_COMBSORT_DECLARE_WITH_DATA (sort_commands, unsigned int, sizecmp)
+
+static void
+_cairo_recording_surface_destroy_bbtree (cairo_recording_surface_t *surface)
+{
+    cairo_command_t **elements;
+    int i, num_elements;
+
+    if (surface->bbtree.chain == INVALID_CHAIN)
+	return;
+
+    if (surface->bbtree.left) {
+	bbtree_del (surface->bbtree.left);
+	surface->bbtree.left = NULL;
+    }
+    if (surface->bbtree.right) {
+	bbtree_del (surface->bbtree.right);
+	surface->bbtree.right = NULL;
+    }
+
+    elements = _cairo_array_index (&surface->commands, 0);
+    num_elements = surface->commands.num_elements;
+    for (i = 0; i < num_elements; i++)
+	elements[i]->header.chain = NULL;
+
+    surface->bbtree.chain = INVALID_CHAIN;
+}
+
+static cairo_status_t
+_cairo_recording_surface_create_bbtree (cairo_recording_surface_t *surface)
+{
+    cairo_command_t **elements = _cairo_array_index (&surface->commands, 0);
+    unsigned int *indices;
+    cairo_status_t status;
+    unsigned int i, count;
+
+    count = surface->commands.num_elements;
+    if (count > surface->num_indices) {
+	free (surface->indices);
+	surface->indices = _cairo_malloc_ab (count, sizeof (int));
+	if (unlikely (surface->indices == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	surface->num_indices = count;
+    }
+
+    indices = surface->indices;
+    for (i = 0; i < count; i++)
+	indices[i] = i;
+
+    sort_commands (indices, count, elements);
+
+    bbtree_init (&surface->bbtree, &elements[indices[0]]->header);
+    for (i = 1; i < count; i++) {
+	cairo_command_header_t *header = &elements[indices[i]]->header;
+	cairo_box_t box;
+
+	_cairo_box_from_rectangle (&box, &header->extents);
+	status = bbtree_add (&surface->bbtree, header, &box);
+	if (unlikely (status))
+	    goto cleanup;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+cleanup:
+    bbtree_del (&surface->bbtree);
+    return status;
+}
+
+/**
+ * cairo_recording_surface_create:
+ * @content: the content of the recording surface
+ * @extents: the extents to record in pixels, can be %NULL to record
+ *           unbounded operations.
+ *
+ * Creates a recording-surface which can be used to record all drawing operations
+ * at the highest level (that is, the level of paint, mask, stroke, fill
+ * and show_text_glyphs). The recording surface can then be "replayed" against
+ * any target surface by using it as a source to drawing operations.
+ *
+ * The recording phase of the recording surface is careful to snapshot all
+ * necessary objects (paths, patterns, etc.), in order to achieve
+ * accurate replay.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * Since: 1.10
+ **/
+cairo_surface_t *
+cairo_recording_surface_create (cairo_content_t		 content,
+				const cairo_rectangle_t	*extents)
+{
+    cairo_recording_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_recording_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_recording_surface_backend,
+			 NULL, /* device */
+			 content,
+			 TRUE); /* is_vector */
+
+
+    surface->unbounded = TRUE;
+
+    /* unbounded -> 'infinite' extents */
+    if (extents != NULL) {
+	surface->extents_pixels = *extents;
+
+	/* XXX check for overflow */
+	surface->extents.x = floor (extents->x);
+	surface->extents.y = floor (extents->y);
+	surface->extents.width = ceil (extents->x + extents->width) - surface->extents.x;
+	surface->extents.height = ceil (extents->y + extents->height) - surface->extents.y;
+
+	surface->unbounded = FALSE;
+    }
+
+    _cairo_array_init (&surface->commands, sizeof (cairo_command_t *));
+
+    surface->base.is_clear = TRUE;
+
+    surface->bbtree.left = surface->bbtree.right = NULL;
+    surface->bbtree.chain = INVALID_CHAIN;
+
+    surface->indices = NULL;
+    surface->num_indices = 0;
+    surface->optimize_clears = TRUE;
+    surface->has_bilevel_alpha = FALSE;
+    surface->has_only_op_over = FALSE;
+
+    return &surface->base;
+}
+slim_hidden_def (cairo_recording_surface_create);
+
+static cairo_surface_t *
+_cairo_recording_surface_create_similar (void		       *abstract_surface,
+					 cairo_content_t	content,
+					 int			width,
+					 int			height)
+{
+    cairo_rectangle_t extents;
+    extents.x = extents.y = 0;
+    extents.width = width;
+    extents.height = height;
+    return cairo_recording_surface_create (content, &extents);
+}
+
+static cairo_status_t
+_cairo_recording_surface_finish (void *abstract_surface)
+{
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_t **elements;
+    int i, num_elements;
+
+    num_elements = surface->commands.num_elements;
+    elements = _cairo_array_index (&surface->commands, 0);
+    for (i = 0; i < num_elements; i++) {
+	cairo_command_t *command = elements[i];
+
+	switch (command->header.type) {
+	case CAIRO_COMMAND_PAINT:
+	    _cairo_pattern_fini (&command->paint.source.base);
+	    break;
+
+	case CAIRO_COMMAND_MASK:
+	    _cairo_pattern_fini (&command->mask.source.base);
+	    _cairo_pattern_fini (&command->mask.mask.base);
+	    break;
+
+	case CAIRO_COMMAND_STROKE:
+	    _cairo_pattern_fini (&command->stroke.source.base);
+	    _cairo_path_fixed_fini (&command->stroke.path);
+	    _cairo_stroke_style_fini (&command->stroke.style);
+	    break;
+
+	case CAIRO_COMMAND_FILL:
+	    _cairo_pattern_fini (&command->fill.source.base);
+	    _cairo_path_fixed_fini (&command->fill.path);
+	    break;
+
+	case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
+	    _cairo_pattern_fini (&command->show_text_glyphs.source.base);
+	    free (command->show_text_glyphs.utf8);
+	    free (command->show_text_glyphs.glyphs);
+	    free (command->show_text_glyphs.clusters);
+	    cairo_scaled_font_destroy (command->show_text_glyphs.scaled_font);
+	    break;
+
+	case CAIRO_COMMAND_TAG:
+	    free (command->tag.tag_name);
+	    if (command->tag.begin) {
+		free (command->tag.attributes);
+		_cairo_pattern_fini (&command->tag.source.base);
+		_cairo_stroke_style_fini (&command->tag.style);
+	    }
+	    break;
+
+	    default:
+	    ASSERT_NOT_REACHED;
+	}
+
+	_cairo_clip_destroy (command->header.clip);
+	free (command);
+    }
+
+    _cairo_array_fini (&surface->commands);
+
+    if (surface->bbtree.left)
+	bbtree_del (surface->bbtree.left);
+    if (surface->bbtree.right)
+	bbtree_del (surface->bbtree.right);
+
+    free (surface->indices);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct proxy {
+    cairo_surface_t base;
+    cairo_surface_t *image;
+};
+
+static cairo_status_t
+proxy_acquire_source_image (void			 *abstract_surface,
+			    cairo_image_surface_t	**image_out,
+			    void			**image_extra)
+{
+    struct proxy *proxy = abstract_surface;
+    return _cairo_surface_acquire_source_image (proxy->image, image_out, image_extra);
+}
+
+static void
+proxy_release_source_image (void			*abstract_surface,
+			    cairo_image_surface_t	*image,
+			    void			*image_extra)
+{
+    struct proxy *proxy = abstract_surface;
+    _cairo_surface_release_source_image (proxy->image, image, image_extra);
+}
+
+static cairo_status_t
+proxy_finish (void *abstract_surface)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t proxy_backend  = {
+    CAIRO_INTERNAL_SURFACE_TYPE_NULL,
+    proxy_finish,
+    NULL,
+
+    NULL, /* create similar */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    proxy_acquire_source_image,
+    proxy_release_source_image,
+};
+
+static cairo_surface_t *
+attach_proxy (cairo_surface_t *source,
+	      cairo_surface_t *image)
+{
+    struct proxy *proxy;
+
+    proxy = _cairo_malloc (sizeof (*proxy));
+    if (unlikely (proxy == NULL))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_surface_init (&proxy->base, &proxy_backend, NULL, image->content, FALSE);
+
+    proxy->image = image;
+    _cairo_surface_attach_snapshot (source, &proxy->base, NULL);
+
+    return &proxy->base;
+}
+
+static void
+detach_proxy (cairo_surface_t *source,
+	      cairo_surface_t *proxy)
+{
+    cairo_surface_finish (proxy);
+    cairo_surface_destroy (proxy);
+}
+
+static cairo_surface_t *
+get_proxy (cairo_surface_t *proxy)
+{
+    return ((struct proxy *)proxy)->image;
+}
+
+static cairo_status_t
+_cairo_recording_surface_acquire_source_image (void			 *abstract_surface,
+					       cairo_image_surface_t	**image_out,
+					       void			**image_extra)
+{
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_surface_t *image, *proxy;
+    cairo_status_t status;
+
+    proxy = _cairo_surface_has_snapshot (abstract_surface, &proxy_backend);
+    if (proxy != NULL) {
+	*image_out = (cairo_image_surface_t *)
+	    cairo_surface_reference (get_proxy (proxy));
+	*image_extra = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    assert (! surface->unbounded);
+    image = _cairo_image_surface_create_with_content (surface->base.content,
+						      surface->extents.width,
+						      surface->extents.height);
+    if (unlikely (image->status))
+	return image->status;
+
+    /* Handle recursion by returning future reads from the current image */
+    proxy = attach_proxy (abstract_surface, image);
+    status = _cairo_recording_surface_replay (&surface->base, image);
+    detach_proxy (abstract_surface, proxy);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	return status;
+    }
+
+    *image_out = (cairo_image_surface_t *) image;
+    *image_extra = NULL;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_recording_surface_release_source_image (void			*abstract_surface,
+					       cairo_image_surface_t	*image,
+					       void			*image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_status_t
+_command_init (cairo_recording_surface_t *surface,
+	       cairo_command_header_t *command,
+	       cairo_command_type_t type,
+	       cairo_operator_t op,
+	       cairo_composite_rectangles_t *composite)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    command->type = type;
+    command->op = op;
+    command->region = CAIRO_RECORDING_REGION_ALL;
+
+    command->extents = composite->unbounded;
+    command->chain = NULL;
+    command->index = surface->commands.num_elements;
+
+    /* steal the clip */
+    command->clip = NULL;
+    if (! _cairo_composite_rectangles_can_reduce_clip (composite,
+						       composite->clip))
+    {
+	command->clip = composite->clip;
+	composite->clip = NULL;
+    }
+
+    return status;
+}
+
+static void
+_cairo_recording_surface_break_self_copy_loop (cairo_recording_surface_t *surface)
+{
+    cairo_surface_flush (&surface->base);
+}
+
+static cairo_status_t
+_cairo_recording_surface_commit (cairo_recording_surface_t *surface,
+				 cairo_command_header_t *command)
+{
+    _cairo_recording_surface_break_self_copy_loop (surface);
+    return _cairo_array_append (&surface->commands, &command);
+}
+
+static void
+_cairo_recording_surface_reset (cairo_recording_surface_t *surface)
+{
+    /* Reset the commands and temporaries */
+    _cairo_recording_surface_finish (surface);
+
+    surface->bbtree.left = surface->bbtree.right = NULL;
+    surface->bbtree.chain = INVALID_CHAIN;
+
+    surface->indices = NULL;
+    surface->num_indices = 0;
+
+    _cairo_array_init (&surface->commands, sizeof (cairo_command_t *));
+}
+
+static cairo_int_status_t
+_cairo_recording_surface_paint (void			  *abstract_surface,
+				cairo_operator_t	   op,
+				const cairo_pattern_t	  *source,
+				const cairo_clip_t	  *clip)
+{
+    cairo_status_t status;
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_paint_t *command;
+    cairo_composite_rectangles_t composite;
+
+    TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
+
+    if (op == CAIRO_OPERATOR_CLEAR && clip == NULL) {
+	if (surface->optimize_clears) {
+	    _cairo_recording_surface_reset (surface);
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    if (clip == NULL && surface->optimize_clears &&
+	(op == CAIRO_OPERATOR_SOURCE ||
+	 (op == CAIRO_OPERATOR_OVER &&
+	  (surface->base.is_clear || _cairo_pattern_is_opaque_solid (source)))))
+    {
+	_cairo_recording_surface_reset (surface);
+    }
+
+    status = _cairo_composite_rectangles_init_for_paint (&composite,
+							 &surface->base,
+							 op, source,
+							 clip);
+    if (unlikely (status))
+	return status;
+
+    command = _cairo_malloc (sizeof (cairo_command_paint_t));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_COMPOSITE;
+    }
+
+    status = _command_init (surface,
+			    &command->header, CAIRO_COMMAND_PAINT, op,
+			    &composite);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_pattern_init_snapshot (&command->source.base, source);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto CLEANUP_SOURCE;
+
+    _cairo_recording_surface_destroy_bbtree (surface);
+
+    _cairo_composite_rectangles_fini (&composite);
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_SOURCE:
+    _cairo_pattern_fini (&command->source.base);
+  CLEANUP_COMMAND:
+    _cairo_clip_destroy (command->header.clip);
+    free (command);
+CLEANUP_COMPOSITE:
+    _cairo_composite_rectangles_fini (&composite);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_recording_surface_mask (void			*abstract_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_pattern_t	*mask,
+			       const cairo_clip_t	*clip)
+{
+    cairo_status_t status;
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_mask_t *command;
+    cairo_composite_rectangles_t composite;
+
+    TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
+
+    status = _cairo_composite_rectangles_init_for_mask (&composite,
+							&surface->base,
+							op, source, mask,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    command = _cairo_malloc (sizeof (cairo_command_mask_t));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_COMPOSITE;
+    }
+
+    status = _command_init (surface,
+			    &command->header, CAIRO_COMMAND_MASK, op,
+			    &composite);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_pattern_init_snapshot (&command->source.base, source);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_pattern_init_snapshot (&command->mask.base, mask);
+    if (unlikely (status))
+	goto CLEANUP_SOURCE;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto CLEANUP_MASK;
+
+    _cairo_recording_surface_destroy_bbtree (surface);
+
+    _cairo_composite_rectangles_fini (&composite);
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_MASK:
+    _cairo_pattern_fini (&command->mask.base);
+  CLEANUP_SOURCE:
+    _cairo_pattern_fini (&command->source.base);
+  CLEANUP_COMMAND:
+    _cairo_clip_destroy (command->header.clip);
+    free (command);
+CLEANUP_COMPOSITE:
+    _cairo_composite_rectangles_fini (&composite);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_recording_surface_stroke (void			*abstract_surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 const cairo_stroke_style_t	*style,
+				 const cairo_matrix_t		*ctm,
+				 const cairo_matrix_t		*ctm_inverse,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t	*clip)
+{
+    cairo_status_t status;
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_stroke_t *command;
+    cairo_composite_rectangles_t composite;
+
+    TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
+
+    status = _cairo_composite_rectangles_init_for_stroke (&composite,
+							  &surface->base,
+							  op, source,
+							  path, style, ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    command = _cairo_malloc (sizeof (cairo_command_stroke_t));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_COMPOSITE;
+    }
+
+    status = _command_init (surface,
+			    &command->header, CAIRO_COMMAND_STROKE, op,
+			    &composite);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_pattern_init_snapshot (&command->source.base, source);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_path_fixed_init_copy (&command->path, path);
+    if (unlikely (status))
+	goto CLEANUP_SOURCE;
+
+    status = _cairo_stroke_style_init_copy (&command->style, style);
+    if (unlikely (status))
+	goto CLEANUP_PATH;
+
+    command->ctm = *ctm;
+    command->ctm_inverse = *ctm_inverse;
+    command->tolerance = tolerance;
+    command->antialias = antialias;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto CLEANUP_STYLE;
+
+    _cairo_recording_surface_destroy_bbtree (surface);
+
+    _cairo_composite_rectangles_fini (&composite);
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_STYLE:
+    _cairo_stroke_style_fini (&command->style);
+  CLEANUP_PATH:
+    _cairo_path_fixed_fini (&command->path);
+  CLEANUP_SOURCE:
+    _cairo_pattern_fini (&command->source.base);
+  CLEANUP_COMMAND:
+    _cairo_clip_destroy (command->header.clip);
+    free (command);
+CLEANUP_COMPOSITE:
+    _cairo_composite_rectangles_fini (&composite);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_recording_surface_fill (void			*abstract_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_path_fixed_t	*path,
+			       cairo_fill_rule_t	 fill_rule,
+			       double			 tolerance,
+			       cairo_antialias_t	 antialias,
+			       const cairo_clip_t	*clip)
+{
+    cairo_status_t status;
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_fill_t *command;
+    cairo_composite_rectangles_t composite;
+
+    TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
+
+    status = _cairo_composite_rectangles_init_for_fill (&composite,
+							&surface->base,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    command = _cairo_malloc (sizeof (cairo_command_fill_t));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_COMPOSITE;
+    }
+
+    status =_command_init (surface,
+			   &command->header, CAIRO_COMMAND_FILL, op,
+			   &composite);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_pattern_init_snapshot (&command->source.base, source);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_path_fixed_init_copy (&command->path, path);
+    if (unlikely (status))
+	goto CLEANUP_SOURCE;
+
+    command->fill_rule = fill_rule;
+    command->tolerance = tolerance;
+    command->antialias = antialias;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto CLEANUP_PATH;
+
+    _cairo_recording_surface_destroy_bbtree (surface);
+
+    _cairo_composite_rectangles_fini (&composite);
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_PATH:
+    _cairo_path_fixed_fini (&command->path);
+  CLEANUP_SOURCE:
+    _cairo_pattern_fini (&command->source.base);
+  CLEANUP_COMMAND:
+    _cairo_clip_destroy (command->header.clip);
+    free (command);
+CLEANUP_COMPOSITE:
+    _cairo_composite_rectangles_fini (&composite);
+    return status;
+}
+
+static cairo_bool_t
+_cairo_recording_surface_has_show_text_glyphs (void *abstract_surface)
+{
+    return TRUE;
+}
+
+static cairo_int_status_t
+_cairo_recording_surface_show_text_glyphs (void				*abstract_surface,
+					   cairo_operator_t		 op,
+					   const cairo_pattern_t	*source,
+					   const char			*utf8,
+					   int				 utf8_len,
+					   cairo_glyph_t		*glyphs,
+					   int				 num_glyphs,
+					   const cairo_text_cluster_t	*clusters,
+					   int				 num_clusters,
+					   cairo_text_cluster_flags_t	 cluster_flags,
+					   cairo_scaled_font_t		*scaled_font,
+					   const cairo_clip_t		*clip)
+{
+    cairo_status_t status;
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_show_text_glyphs_t *command;
+    cairo_composite_rectangles_t composite;
+
+    TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
+
+    status = _cairo_composite_rectangles_init_for_glyphs (&composite,
+							  &surface->base,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip,
+							  NULL);
+    if (unlikely (status))
+	return status;
+
+    command = _cairo_malloc (sizeof (cairo_command_show_text_glyphs_t));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_COMPOSITE;
+    }
+
+    status = _command_init (surface,
+			    &command->header, CAIRO_COMMAND_SHOW_TEXT_GLYPHS,
+			    op, &composite);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    status = _cairo_pattern_init_snapshot (&command->source.base, source);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    command->utf8 = NULL;
+    command->utf8_len = utf8_len;
+    command->glyphs = NULL;
+    command->num_glyphs = num_glyphs;
+    command->clusters = NULL;
+    command->num_clusters = num_clusters;
+
+    if (utf8_len) {
+	command->utf8 = _cairo_malloc (utf8_len);
+	if (unlikely (command->utf8 == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto CLEANUP_ARRAYS;
+	}
+	memcpy (command->utf8, utf8, utf8_len);
+    }
+    if (num_glyphs) {
+	command->glyphs = _cairo_malloc_ab (num_glyphs, sizeof (glyphs[0]));
+	if (unlikely (command->glyphs == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto CLEANUP_ARRAYS;
+	}
+	memcpy (command->glyphs, glyphs, sizeof (glyphs[0]) * num_glyphs);
+    }
+    if (num_clusters) {
+	command->clusters = _cairo_malloc_ab (num_clusters, sizeof (clusters[0]));
+	if (unlikely (command->clusters == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto CLEANUP_ARRAYS;
+	}
+	memcpy (command->clusters, clusters, sizeof (clusters[0]) * num_clusters);
+    }
+
+    command->cluster_flags = cluster_flags;
+
+    command->scaled_font = cairo_scaled_font_reference (scaled_font);
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto CLEANUP_SCALED_FONT;
+
+    _cairo_composite_rectangles_fini (&composite);
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_SCALED_FONT:
+    cairo_scaled_font_destroy (command->scaled_font);
+  CLEANUP_ARRAYS:
+    free (command->utf8);
+    free (command->glyphs);
+    free (command->clusters);
+
+    _cairo_pattern_fini (&command->source.base);
+  CLEANUP_COMMAND:
+    _cairo_clip_destroy (command->header.clip);
+    free (command);
+CLEANUP_COMPOSITE:
+    _cairo_composite_rectangles_fini (&composite);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_recording_surface_tag (void			 *abstract_surface,
+			      cairo_bool_t                begin,
+			      const char                 *tag_name,
+			      const char                 *attributes,
+			      const cairo_pattern_t	 *source,
+			      const cairo_stroke_style_t *style,
+			      const cairo_matrix_t	 *ctm,
+			      const cairo_matrix_t	 *ctm_inverse,
+			      const cairo_clip_t	 *clip)
+{
+    cairo_status_t status;
+    cairo_recording_surface_t *surface = abstract_surface;
+    cairo_command_tag_t *command;
+    cairo_composite_rectangles_t composite;
+
+    TRACE ((stderr, "%s: surface=%d\n", __FUNCTION__, surface->base.unique_id));
+
+    status = _cairo_composite_rectangles_init_for_paint (&composite,
+							 &surface->base,
+							 CAIRO_OPERATOR_SOURCE,
+							 source ? source : &_cairo_pattern_black.base,
+							 clip);
+    if (unlikely (status))
+	return status;
+
+    command = calloc (1, sizeof (cairo_command_tag_t));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_COMPOSITE;
+    }
+
+    status = _command_init (surface,
+			    &command->header, CAIRO_COMMAND_TAG, CAIRO_OPERATOR_SOURCE,
+			    &composite);
+    if (unlikely (status))
+	goto CLEANUP_COMMAND;
+
+    command->begin = begin;
+    command->tag_name = strdup (tag_name);
+    if (begin) {
+	if (attributes)
+	    command->attributes = strdup (attributes);
+
+	status = _cairo_pattern_init_snapshot (&command->source.base, source);
+	if (unlikely (status))
+	    goto CLEANUP_STRINGS;
+
+	status = _cairo_stroke_style_init_copy (&command->style, style);
+	if (unlikely (status))
+	    goto CLEANUP_SOURCE;
+
+	command->ctm = *ctm;
+	command->ctm_inverse = *ctm_inverse;
+    }
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status)) {
+	if (begin)
+	    goto CLEANUP_STRINGS;
+	else
+	    goto CLEANUP_STYLE;
+    }
+
+    _cairo_recording_surface_destroy_bbtree (surface);
+
+    _cairo_composite_rectangles_fini (&composite);
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_STYLE:
+    _cairo_stroke_style_fini (&command->style);
+  CLEANUP_SOURCE:
+    _cairo_pattern_fini (&command->source.base);
+  CLEANUP_STRINGS:
+    free (command->tag_name);
+    free (command->attributes);
+  CLEANUP_COMMAND:
+    _cairo_clip_destroy (command->header.clip);
+    free (command);
+  CLEANUP_COMPOSITE:
+    _cairo_composite_rectangles_fini (&composite);
+    return status;
+}
+
+static void
+_command_init_copy (cairo_recording_surface_t *surface,
+		    cairo_command_header_t *dst,
+		    const cairo_command_header_t *src)
+{
+    dst->type = src->type;
+    dst->op = src->op;
+    dst->region = CAIRO_RECORDING_REGION_ALL;
+
+    dst->extents = src->extents;
+    dst->chain = NULL;
+    dst->index = surface->commands.num_elements;
+
+    dst->clip = _cairo_clip_copy (src->clip);
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy__paint (cairo_recording_surface_t *surface,
+				      const cairo_command_t *src)
+{
+    cairo_command_paint_t *command;
+    cairo_status_t status;
+
+    command = _cairo_malloc (sizeof (*command));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto err;
+    }
+
+    _command_init_copy (surface, &command->header, &src->header);
+
+    status = _cairo_pattern_init_copy (&command->source.base,
+				       &src->paint.source.base);
+    if (unlikely (status))
+	goto err_command;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto err_source;
+
+    return CAIRO_STATUS_SUCCESS;
+
+err_source:
+    _cairo_pattern_fini (&command->source.base);
+err_command:
+    free(command);
+err:
+    return status;
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy__mask (cairo_recording_surface_t *surface,
+				     const cairo_command_t *src)
+{
+    cairo_command_mask_t *command;
+    cairo_status_t status;
+
+    command = _cairo_malloc (sizeof (*command));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto err;
+    }
+
+    _command_init_copy (surface, &command->header, &src->header);
+
+    status = _cairo_pattern_init_copy (&command->source.base,
+				       &src->mask.source.base);
+    if (unlikely (status))
+	goto err_command;
+
+    status = _cairo_pattern_init_copy (&command->mask.base,
+				       &src->mask.mask.base);
+    if (unlikely (status))
+	goto err_source;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto err_mask;
+
+    return CAIRO_STATUS_SUCCESS;
+
+err_mask:
+    _cairo_pattern_fini (&command->mask.base);
+err_source:
+    _cairo_pattern_fini (&command->source.base);
+err_command:
+    free(command);
+err:
+    return status;
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy__stroke (cairo_recording_surface_t *surface,
+				     const cairo_command_t *src)
+{
+    cairo_command_stroke_t *command;
+    cairo_status_t status;
+
+    command = _cairo_malloc (sizeof (*command));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto err;
+    }
+
+    _command_init_copy (surface, &command->header, &src->header);
+
+    status = _cairo_pattern_init_copy (&command->source.base,
+				       &src->stroke.source.base);
+    if (unlikely (status))
+	goto err_command;
+
+    status = _cairo_path_fixed_init_copy (&command->path, &src->stroke.path);
+    if (unlikely (status))
+	goto err_source;
+
+    status = _cairo_stroke_style_init_copy (&command->style,
+					    &src->stroke.style);
+    if (unlikely (status))
+	goto err_path;
+
+    command->ctm = src->stroke.ctm;
+    command->ctm_inverse = src->stroke.ctm_inverse;
+    command->tolerance = src->stroke.tolerance;
+    command->antialias = src->stroke.antialias;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto err_style;
+
+    return CAIRO_STATUS_SUCCESS;
+
+err_style:
+    _cairo_stroke_style_fini (&command->style);
+err_path:
+    _cairo_path_fixed_fini (&command->path);
+err_source:
+    _cairo_pattern_fini (&command->source.base);
+err_command:
+    free(command);
+err:
+    return status;
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy__fill (cairo_recording_surface_t *surface,
+				     const cairo_command_t *src)
+{
+    cairo_command_fill_t *command;
+    cairo_status_t status;
+
+    command = _cairo_malloc (sizeof (*command));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto err;
+    }
+
+    _command_init_copy (surface, &command->header, &src->header);
+
+    status = _cairo_pattern_init_copy (&command->source.base,
+				       &src->fill.source.base);
+    if (unlikely (status))
+	goto err_command;
+
+    status = _cairo_path_fixed_init_copy (&command->path, &src->fill.path);
+    if (unlikely (status))
+	goto err_source;
+
+    command->fill_rule = src->fill.fill_rule;
+    command->tolerance = src->fill.tolerance;
+    command->antialias = src->fill.antialias;
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto err_path;
+
+    return CAIRO_STATUS_SUCCESS;
+
+err_path:
+    _cairo_path_fixed_fini (&command->path);
+err_source:
+    _cairo_pattern_fini (&command->source.base);
+err_command:
+    free(command);
+err:
+    return status;
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy__glyphs (cairo_recording_surface_t *surface,
+				       const cairo_command_t *src)
+{
+    cairo_command_show_text_glyphs_t *command;
+    cairo_status_t status;
+
+    command = _cairo_malloc (sizeof (*command));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto err;
+    }
+
+    _command_init_copy (surface, &command->header, &src->header);
+
+    status = _cairo_pattern_init_copy (&command->source.base,
+				       &src->show_text_glyphs.source.base);
+    if (unlikely (status))
+	goto err_command;
+
+    command->utf8 = NULL;
+    command->utf8_len = src->show_text_glyphs.utf8_len;
+    command->glyphs = NULL;
+    command->num_glyphs = src->show_text_glyphs.num_glyphs;
+    command->clusters = NULL;
+    command->num_clusters = src->show_text_glyphs.num_clusters;
+
+    if (command->utf8_len) {
+	command->utf8 = _cairo_malloc (command->utf8_len);
+	if (unlikely (command->utf8 == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto err_arrays;
+	}
+	memcpy (command->utf8, src->show_text_glyphs.utf8, command->utf8_len);
+    }
+    if (command->num_glyphs) {
+	command->glyphs = _cairo_malloc_ab (command->num_glyphs,
+					    sizeof (command->glyphs[0]));
+	if (unlikely (command->glyphs == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto err_arrays;
+	}
+	memcpy (command->glyphs, src->show_text_glyphs.glyphs,
+		sizeof (command->glyphs[0]) * command->num_glyphs);
+    }
+    if (command->num_clusters) {
+	command->clusters = _cairo_malloc_ab (command->num_clusters,
+					      sizeof (command->clusters[0]));
+	if (unlikely (command->clusters == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto err_arrays;
+	}
+	memcpy (command->clusters, src->show_text_glyphs.clusters,
+		sizeof (command->clusters[0]) * command->num_clusters);
+    }
+
+    command->cluster_flags = src->show_text_glyphs.cluster_flags;
+
+    command->scaled_font =
+	cairo_scaled_font_reference (src->show_text_glyphs.scaled_font);
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status))
+	goto err_arrays;
+
+    return CAIRO_STATUS_SUCCESS;
+
+err_arrays:
+    free (command->utf8);
+    free (command->glyphs);
+    free (command->clusters);
+    _cairo_pattern_fini (&command->source.base);
+err_command:
+    free(command);
+err:
+    return status;
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy__tag (cairo_recording_surface_t *surface,
+				    const cairo_command_t *src)
+{
+    cairo_command_tag_t *command;
+    cairo_status_t status;
+
+    command = calloc (1, sizeof (*command));
+    if (unlikely (command == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto err;
+    }
+
+    _command_init_copy (surface, &command->header, &src->header);
+
+    command->begin = src->tag.begin;
+    command->tag_name = strdup (src->tag.tag_name);
+    if (src->tag.begin) {
+	if (src->tag.attributes)
+	    command->attributes = strdup (src->tag.attributes);
+
+	status = _cairo_pattern_init_copy (&command->source.base,
+					   &src->stroke.source.base);
+	if (unlikely (status))
+	    goto err_command;
+
+	status = _cairo_stroke_style_init_copy (&command->style,
+						&src->stroke.style);
+	if (unlikely (status))
+	    goto err_source;
+
+	command->ctm = src->stroke.ctm;
+	command->ctm_inverse = src->stroke.ctm_inverse;
+    }
+
+    status = _cairo_recording_surface_commit (surface, &command->header);
+    if (unlikely (status)) {
+	if (src->tag.begin)
+	    goto err_command;
+	else
+	    goto err_style;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+err_style:
+    _cairo_stroke_style_fini (&command->style);
+err_source:
+    _cairo_pattern_fini (&command->source.base);
+err_command:
+    free(command->tag_name);
+    free(command->attributes);
+    free(command);
+err:
+    return status;
+}
+
+static cairo_status_t
+_cairo_recording_surface_copy (cairo_recording_surface_t *dst,
+			       cairo_recording_surface_t *src)
+{
+    cairo_command_t **elements;
+    int i, num_elements;
+    cairo_status_t status;
+
+    elements = _cairo_array_index (&src->commands, 0);
+    num_elements = src->commands.num_elements;
+    for (i = 0; i < num_elements; i++) {
+	const cairo_command_t *command = elements[i];
+
+	switch (command->header.type) {
+	case CAIRO_COMMAND_PAINT:
+	    status = _cairo_recording_surface_copy__paint (dst, command);
+	    break;
+
+	case CAIRO_COMMAND_MASK:
+	    status = _cairo_recording_surface_copy__mask (dst, command);
+	    break;
+
+	case CAIRO_COMMAND_STROKE:
+	    status = _cairo_recording_surface_copy__stroke (dst, command);
+	    break;
+
+	case CAIRO_COMMAND_FILL:
+	    status = _cairo_recording_surface_copy__fill (dst, command);
+	    break;
+
+	case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
+	    status = _cairo_recording_surface_copy__glyphs (dst, command);
+	    break;
+
+	case CAIRO_COMMAND_TAG:
+	    status = _cairo_recording_surface_copy__tag (dst, command);
+	    break;
+
+	default:
+	    ASSERT_NOT_REACHED;
+	}
+
+	if (unlikely (status))
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_recording_surface_snapshot:
+ * @surface: a #cairo_surface_t which must be a recording surface
+ *
+ * Make an immutable copy of @surface. It is an error to call a
+ * surface-modifying function on the result of this function.
+ *
+ * The caller owns the return value and should call
+ * cairo_surface_destroy() when finished with it. This function will not
+ * return %NULL, but will return a nil surface instead.
+ *
+ * Return value: The snapshot surface.
+ **/
+static cairo_surface_t *
+_cairo_recording_surface_snapshot (void *abstract_other)
+{
+    cairo_recording_surface_t *other = abstract_other;
+    cairo_recording_surface_t *surface;
+    cairo_status_t status;
+
+    surface = _cairo_malloc (sizeof (cairo_recording_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_recording_surface_backend,
+			 NULL, /* device */
+			 other->base.content,
+			 other->base.is_vector);
+
+    surface->extents_pixels = other->extents_pixels;
+    surface->extents = other->extents;
+    surface->unbounded = other->unbounded;
+
+    surface->base.is_clear = other->base.is_clear;
+
+    surface->bbtree.left = surface->bbtree.right = NULL;
+    surface->bbtree.chain = INVALID_CHAIN;
+
+    surface->indices = NULL;
+    surface->num_indices = 0;
+    surface->optimize_clears = TRUE;
+
+    _cairo_array_init (&surface->commands, sizeof (cairo_command_t *));
+    status = _cairo_recording_surface_copy (surface, other);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&surface->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return &surface->base;
+}
+
+static cairo_bool_t
+_cairo_recording_surface_get_extents (void		    *abstract_surface,
+				      cairo_rectangle_int_t *rectangle)
+{
+    cairo_recording_surface_t *surface = abstract_surface;
+
+    if (surface->unbounded)
+	return FALSE;
+
+    *rectangle = surface->extents;
+    return TRUE;
+}
+
+static const cairo_surface_backend_t cairo_recording_surface_backend = {
+    CAIRO_SURFACE_TYPE_RECORDING,
+    _cairo_recording_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_recording_surface_create_similar,
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    _cairo_recording_surface_acquire_source_image,
+    _cairo_recording_surface_release_source_image,
+    _cairo_recording_surface_snapshot,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_recording_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    /* Here are the 5 basic drawing operations, (which are in some
+     * sense the only things that cairo_recording_surface should need to
+     * implement).  However, we implement the more generic show_text_glyphs
+     * instead of show_glyphs.  One or the other is eough. */
+
+    _cairo_recording_surface_paint,
+    _cairo_recording_surface_mask,
+    _cairo_recording_surface_stroke,
+    _cairo_recording_surface_fill,
+    NULL, /* fill-stroke */
+    NULL,
+    _cairo_recording_surface_has_show_text_glyphs,
+    _cairo_recording_surface_show_text_glyphs,
+    NULL, /* get_supported_mime_types */
+    _cairo_recording_surface_tag,
+};
+
+cairo_int_status_t
+_cairo_recording_surface_get_path (cairo_surface_t    *abstract_surface,
+				   cairo_path_fixed_t *path)
+{
+    cairo_recording_surface_t *surface;
+    cairo_command_t **elements;
+    int i, num_elements;
+    cairo_int_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return abstract_surface->status;
+
+    surface = (cairo_recording_surface_t *) abstract_surface;
+    status = CAIRO_STATUS_SUCCESS;
+
+    num_elements = surface->commands.num_elements;
+    elements = _cairo_array_index (&surface->commands, 0);
+    for (i = 0; i < num_elements; i++) {
+	cairo_command_t *command = elements[i];
+
+	switch (command->header.type) {
+	case CAIRO_COMMAND_PAINT:
+	case CAIRO_COMMAND_MASK:
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	    break;
+
+	case CAIRO_COMMAND_STROKE:
+	{
+	    cairo_traps_t traps;
+
+	    _cairo_traps_init (&traps);
+
+	    /* XXX call cairo_stroke_to_path() when that is implemented */
+	    status = _cairo_path_fixed_stroke_polygon_to_traps (&command->stroke.path,
+								&command->stroke.style,
+								&command->stroke.ctm,
+								&command->stroke.ctm_inverse,
+								command->stroke.tolerance,
+								&traps);
+
+	    if (status == CAIRO_INT_STATUS_SUCCESS)
+		status = _cairo_traps_path (&traps, path);
+
+	    _cairo_traps_fini (&traps);
+	    break;
+	}
+	case CAIRO_COMMAND_FILL:
+	{
+	    status = _cairo_path_fixed_append (path,
+					       &command->fill.path,
+					       0, 0);
+	    break;
+	}
+	case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
+	{
+	    status = _cairo_scaled_font_glyph_path (command->show_text_glyphs.scaled_font,
+						    command->show_text_glyphs.glyphs,
+						    command->show_text_glyphs.num_glyphs,
+						    path);
+	    break;
+	}
+
+	case CAIRO_COMMAND_TAG:
+	    break;
+
+	default:
+	    ASSERT_NOT_REACHED;
+	}
+
+	if (unlikely (status))
+	    break;
+    }
+
+    return status;
+}
+
+static int
+_cairo_recording_surface_get_visible_commands (cairo_recording_surface_t *surface,
+					       const cairo_rectangle_int_t *extents)
+{
+    unsigned int num_visible, *indices;
+    cairo_box_t box;
+
+    if (surface->commands.num_elements == 0)
+	    return 0;
+
+    _cairo_box_from_rectangle (&box, extents);
+
+    if (surface->bbtree.chain == INVALID_CHAIN)
+	_cairo_recording_surface_create_bbtree (surface);
+
+    indices = surface->indices;
+    bbtree_foreach_mark_visible (&surface->bbtree, &box, &indices);
+    num_visible = indices - surface->indices;
+    if (num_visible > 1)
+	sort_indices (surface->indices, num_visible);
+
+    return num_visible;
+}
+
+static void
+_cairo_recording_surface_merge_source_attributes (cairo_recording_surface_t  *surface,
+						  cairo_operator_t            op,
+						  const cairo_pattern_t      *source)
+{
+    if (op != CAIRO_OPERATOR_OVER)
+	surface->has_only_op_over = FALSE;
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *surf_pat = (cairo_surface_pattern_t *) source;
+	cairo_surface_t *surf = surf_pat->surface;
+	cairo_surface_t *free_me = NULL;
+
+	if (_cairo_surface_is_snapshot (surf))
+	    free_me = surf = _cairo_surface_snapshot_get_target (surf);
+
+	if (surf->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	    cairo_recording_surface_t *rec_surf = (cairo_recording_surface_t *) surf;
+
+	    if (! _cairo_recording_surface_has_only_bilevel_alpha (rec_surf))
+		surface->has_bilevel_alpha = FALSE;
+
+	    if (! _cairo_recording_surface_has_only_op_over (rec_surf))
+		surface->has_only_op_over = FALSE;
+
+	} else if (surf->type == CAIRO_SURFACE_TYPE_IMAGE) {
+	    cairo_image_surface_t *img_surf = (cairo_image_surface_t *) surf;
+
+	    if (_cairo_image_analyze_transparency (img_surf) == CAIRO_IMAGE_HAS_ALPHA)
+		surface->has_bilevel_alpha = FALSE;
+
+	} else {
+	    if (!_cairo_pattern_is_clear (source) && !_cairo_pattern_is_opaque (source, NULL))
+		surface->has_bilevel_alpha = FALSE;
+	}
+
+	cairo_surface_destroy (free_me);
+	return;
+
+    } else if (source->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
+	cairo_surface_t *image;
+	cairo_surface_t *raster;
+
+	image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
+	raster = _cairo_raster_source_pattern_acquire (source, image, NULL);
+	cairo_surface_destroy (image);
+	if (raster) {
+	    if (raster->type == CAIRO_SURFACE_TYPE_IMAGE) {
+		if (_cairo_image_analyze_transparency ((cairo_image_surface_t *)raster) == CAIRO_IMAGE_HAS_ALPHA)
+		    surface->has_bilevel_alpha = FALSE;
+	    }
+
+	    _cairo_raster_source_pattern_release (source, raster);
+	    if (raster->type == CAIRO_SURFACE_TYPE_IMAGE)
+		return;
+	}
+    }
+
+    if (!_cairo_pattern_is_clear (source) && !_cairo_pattern_is_opaque (source, NULL))
+	surface->has_bilevel_alpha = FALSE;
+}
+
+static cairo_status_t
+_cairo_recording_surface_replay_internal (cairo_recording_surface_t	*surface,
+					  const cairo_rectangle_int_t *surface_extents,
+					  const cairo_matrix_t *surface_transform,
+					  cairo_surface_t	     *target,
+					  const cairo_clip_t *target_clip,
+					  cairo_bool_t surface_is_unbounded,
+					  cairo_recording_replay_type_t type,
+					  cairo_recording_region_type_t region)
+{
+    cairo_surface_wrapper_t wrapper;
+    cairo_command_t **elements;
+    cairo_bool_t replay_all =
+	type == CAIRO_RECORDING_CREATE_REGIONS || region == CAIRO_RECORDING_REGION_ALL;
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_rectangle_int_t extents;
+    cairo_bool_t use_indices = FALSE;
+    const cairo_rectangle_int_t *r;
+    unsigned int i, num_elements;
+
+    if (unlikely (surface->base.status))
+	return surface->base.status;
+
+    if (unlikely (target->status))
+	return target->status;
+
+    if (unlikely (surface->base.finished))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    if (surface->base.is_clear)
+	return CAIRO_STATUS_SUCCESS;
+
+    assert (_cairo_surface_is_recording (&surface->base));
+
+    _cairo_surface_wrapper_init (&wrapper, target);
+    if (surface_extents)
+	_cairo_surface_wrapper_intersect_extents (&wrapper, surface_extents);
+    r = &_cairo_unbounded_rectangle;
+    if (! surface->unbounded && !surface_is_unbounded) {
+	_cairo_surface_wrapper_intersect_extents (&wrapper, &surface->extents);
+	r = &surface->extents;
+    }
+    _cairo_surface_wrapper_set_inverse_transform (&wrapper, surface_transform);
+    _cairo_surface_wrapper_set_clip (&wrapper, target_clip);
+
+    /* Compute the extents of the target clip in recorded device space */
+    if (! _cairo_surface_wrapper_get_target_extents (&wrapper, surface_is_unbounded, &extents))
+	goto done;
+
+    surface->has_bilevel_alpha = TRUE;
+    surface->has_only_op_over = TRUE;
+
+    num_elements = surface->commands.num_elements;
+    elements = _cairo_array_index (&surface->commands, 0);
+    if (extents.width < r->width || extents.height < r->height) {
+	num_elements =
+	    _cairo_recording_surface_get_visible_commands (surface, &extents);
+	use_indices = num_elements != surface->commands.num_elements;
+    }
+
+    for (i = 0; i < num_elements; i++) {
+	cairo_command_t *command = elements[use_indices ? surface->indices[i] : i];
+
+	if (! replay_all && command->header.region != region)
+	    continue;
+
+	if (! _cairo_rectangle_intersects (&extents, &command->header.extents))
+	    continue;
+
+	switch (command->header.type) {
+	case CAIRO_COMMAND_PAINT:
+	    status = _cairo_surface_wrapper_paint (&wrapper,
+						   command->header.op,
+						   &command->paint.source.base,
+						   command->header.clip);
+	    if (type == CAIRO_RECORDING_CREATE_REGIONS) {
+		_cairo_recording_surface_merge_source_attributes (surface,
+								  command->header.op,
+								  &command->paint.source.base);
+	    }
+	    break;
+
+	case CAIRO_COMMAND_MASK:
+	    status = _cairo_surface_wrapper_mask (&wrapper,
+						  command->header.op,
+						  &command->mask.source.base,
+						  &command->mask.mask.base,
+						  command->header.clip);
+	    if (type == CAIRO_RECORDING_CREATE_REGIONS) {
+		_cairo_recording_surface_merge_source_attributes (surface,
+								  command->header.op,
+								  &command->mask.source.base);
+		_cairo_recording_surface_merge_source_attributes (surface,
+								  command->header.op,
+								  &command->mask.mask.base);
+	    }
+	    break;
+
+	case CAIRO_COMMAND_STROKE:
+	    status = _cairo_surface_wrapper_stroke (&wrapper,
+						    command->header.op,
+						    &command->stroke.source.base,
+						    &command->stroke.path,
+						    &command->stroke.style,
+						    &command->stroke.ctm,
+						    &command->stroke.ctm_inverse,
+						    command->stroke.tolerance,
+						    command->stroke.antialias,
+						    command->header.clip);
+	    if (type == CAIRO_RECORDING_CREATE_REGIONS) {
+		_cairo_recording_surface_merge_source_attributes (surface,
+								  command->header.op,
+								  &command->stroke.source.base);
+	    }
+	    break;
+
+	case CAIRO_COMMAND_FILL:
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	    if (_cairo_surface_wrapper_has_fill_stroke (&wrapper)) {
+		cairo_command_t *stroke_command;
+
+		stroke_command = NULL;
+		if (type != CAIRO_RECORDING_CREATE_REGIONS && i < num_elements - 1)
+		    stroke_command = elements[i + 1];
+
+		if (stroke_command != NULL &&
+		    type == CAIRO_RECORDING_REPLAY &&
+		    region != CAIRO_RECORDING_REGION_ALL)
+		{
+		    if (stroke_command->header.region != region)
+			stroke_command = NULL;
+		}
+
+		if (stroke_command != NULL &&
+		    stroke_command->header.type == CAIRO_COMMAND_STROKE &&
+		    _cairo_path_fixed_equal (&command->fill.path,
+					     &stroke_command->stroke.path) &&
+		    _cairo_clip_equal (command->header.clip,
+				       stroke_command->header.clip))
+		{
+		    status = _cairo_surface_wrapper_fill_stroke (&wrapper,
+								 command->header.op,
+								 &command->fill.source.base,
+								 command->fill.fill_rule,
+								 command->fill.tolerance,
+								 command->fill.antialias,
+								 &command->fill.path,
+								 stroke_command->header.op,
+								 &stroke_command->stroke.source.base,
+								 &stroke_command->stroke.style,
+								 &stroke_command->stroke.ctm,
+								 &stroke_command->stroke.ctm_inverse,
+								 stroke_command->stroke.tolerance,
+								 stroke_command->stroke.antialias,
+								 command->header.clip);
+		    if (type == CAIRO_RECORDING_CREATE_REGIONS) {
+			_cairo_recording_surface_merge_source_attributes (surface,
+									  command->header.op,
+									  &command->fill.source.base);
+			_cairo_recording_surface_merge_source_attributes (surface,
+									  command->header.op,
+									  &command->stroke.source.base);
+		    }
+		    i++;
+		}
+	    }
+	    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+		status = _cairo_surface_wrapper_fill (&wrapper,
+						      command->header.op,
+						      &command->fill.source.base,
+						      &command->fill.path,
+						      command->fill.fill_rule,
+						      command->fill.tolerance,
+						      command->fill.antialias,
+						      command->header.clip);
+		if (type == CAIRO_RECORDING_CREATE_REGIONS) {
+		    _cairo_recording_surface_merge_source_attributes (surface,
+								      command->header.op,
+								      &command->fill.source.base);
+		}
+	    }
+	    break;
+
+	case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
+	    status = _cairo_surface_wrapper_show_text_glyphs (&wrapper,
+							      command->header.op,
+							      &command->show_text_glyphs.source.base,
+							      command->show_text_glyphs.utf8, command->show_text_glyphs.utf8_len,
+							      command->show_text_glyphs.glyphs, command->show_text_glyphs.num_glyphs,
+							      command->show_text_glyphs.clusters, command->show_text_glyphs.num_clusters,
+							      command->show_text_glyphs.cluster_flags,
+							      command->show_text_glyphs.scaled_font,
+							      command->header.clip);
+	    if (type == CAIRO_RECORDING_CREATE_REGIONS) {
+		_cairo_recording_surface_merge_source_attributes (surface,
+								  command->header.op,
+								  &command->show_text_glyphs.source.base);
+	    }
+	    break;
+
+	case CAIRO_COMMAND_TAG:
+	    status = _cairo_surface_wrapper_tag (&wrapper,
+						 command->tag.begin,
+						 command->tag.tag_name,
+						 command->tag.attributes,
+						 &command->tag.source.base,
+						 &command->tag.style,
+						 &command->tag.ctm,
+						 &command->tag.ctm_inverse,
+						 command->header.clip);
+	    break;
+
+	default:
+	    ASSERT_NOT_REACHED;
+	}
+
+	if (type == CAIRO_RECORDING_CREATE_REGIONS && command->header.region != CAIRO_RECORDING_REGION_NATIVE) {
+	    if (status == CAIRO_INT_STATUS_SUCCESS) {
+		command->header.region = CAIRO_RECORDING_REGION_NATIVE;
+	    } else if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK) {
+		command->header.region = CAIRO_RECORDING_REGION_IMAGE_FALLBACK;
+		status = CAIRO_INT_STATUS_SUCCESS;
+	    } else {
+		assert (_cairo_int_status_is_error (status));
+	    }
+	}
+
+	if (unlikely (status))
+	    break;
+    }
+
+done:
+    _cairo_surface_wrapper_fini (&wrapper);
+    return _cairo_surface_set_error (&surface->base, status);
+}
+
+cairo_status_t
+_cairo_recording_surface_replay_one (cairo_recording_surface_t	*surface,
+				     long unsigned index,
+				     cairo_surface_t	     *target)
+{
+    cairo_surface_wrapper_t wrapper;
+    cairo_command_t **elements, *command;
+    cairo_int_status_t status;
+
+    if (unlikely (surface->base.status))
+	return surface->base.status;
+
+    if (unlikely (target->status))
+	return target->status;
+
+    if (unlikely (surface->base.finished))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    assert (_cairo_surface_is_recording (&surface->base));
+
+    /* XXX
+     * Use a surface wrapper because we may want to do transformed
+     * replay in the future.
+     */
+    _cairo_surface_wrapper_init (&wrapper, target);
+
+    if (index > surface->commands.num_elements)
+	return _cairo_error (CAIRO_STATUS_READ_ERROR);
+
+    elements = _cairo_array_index (&surface->commands, 0);
+    command = elements[index];
+    switch (command->header.type) {
+    case CAIRO_COMMAND_PAINT:
+	status = _cairo_surface_wrapper_paint (&wrapper,
+					       command->header.op,
+					       &command->paint.source.base,
+					       command->header.clip);
+	break;
+
+    case CAIRO_COMMAND_MASK:
+	status = _cairo_surface_wrapper_mask (&wrapper,
+					      command->header.op,
+					      &command->mask.source.base,
+					      &command->mask.mask.base,
+					      command->header.clip);
+	break;
+
+    case CAIRO_COMMAND_STROKE:
+	status = _cairo_surface_wrapper_stroke (&wrapper,
+						command->header.op,
+						&command->stroke.source.base,
+						&command->stroke.path,
+						&command->stroke.style,
+						&command->stroke.ctm,
+						&command->stroke.ctm_inverse,
+						command->stroke.tolerance,
+						command->stroke.antialias,
+						command->header.clip);
+	break;
+
+    case CAIRO_COMMAND_FILL:
+	status = _cairo_surface_wrapper_fill (&wrapper,
+					      command->header.op,
+					      &command->fill.source.base,
+					      &command->fill.path,
+					      command->fill.fill_rule,
+					      command->fill.tolerance,
+					      command->fill.antialias,
+					      command->header.clip);
+	break;
+
+    case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
+	status = _cairo_surface_wrapper_show_text_glyphs (&wrapper,
+							  command->header.op,
+							  &command->show_text_glyphs.source.base,
+							  command->show_text_glyphs.utf8, command->show_text_glyphs.utf8_len,
+							  command->show_text_glyphs.glyphs, command->show_text_glyphs.num_glyphs,
+							  command->show_text_glyphs.clusters, command->show_text_glyphs.num_clusters,
+							  command->show_text_glyphs.cluster_flags,
+							  command->show_text_glyphs.scaled_font,
+							  command->header.clip);
+	break;
+
+    case CAIRO_COMMAND_TAG:
+	status = _cairo_surface_wrapper_tag (&wrapper,
+					     command->tag.begin,
+					     command->tag.tag_name,
+					     command->tag.attributes,
+					     &command->tag.source.base,
+					     &command->tag.style,
+					     &command->tag.ctm,
+					     &command->tag.ctm_inverse,
+					     command->header.clip);
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+    }
+
+    _cairo_surface_wrapper_fini (&wrapper);
+    return _cairo_surface_set_error (&surface->base, status);
+}
+/**
+ * _cairo_recording_surface_replay:
+ * @surface: the #cairo_recording_surface_t
+ * @target: a target #cairo_surface_t onto which to replay the operations
+ * @width_pixels: width of the surface, in pixels
+ * @height_pixels: height of the surface, in pixels
+ *
+ * A recording surface can be "replayed" against any target surface,
+ * after which the results in target will be identical to the results
+ * that would have been obtained if the original operations applied to
+ * the recording surface had instead been applied to the target surface.
+ **/
+cairo_status_t
+_cairo_recording_surface_replay (cairo_surface_t *surface,
+				 cairo_surface_t *target)
+{
+    return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface, NULL, NULL,
+						     target, NULL, FALSE,
+						     CAIRO_RECORDING_REPLAY,
+						     CAIRO_RECORDING_REGION_ALL);
+}
+
+cairo_status_t
+_cairo_recording_surface_replay_with_clip (cairo_surface_t *surface,
+					   const cairo_matrix_t *surface_transform,
+					   cairo_surface_t *target,
+					   const cairo_clip_t *target_clip)
+{
+    return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface, NULL, surface_transform,
+						     target, target_clip, FALSE,
+						     CAIRO_RECORDING_REPLAY,
+						     CAIRO_RECORDING_REGION_ALL);
+}
+
+/* Replay recording to surface. When the return status of each operation is
+ * one of %CAIRO_STATUS_SUCCESS, %CAIRO_INT_STATUS_UNSUPPORTED, or
+ * %CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY the status of each operation
+ * will be stored in the recording surface. Any other status will abort the
+ * replay and return the status.
+ */
+cairo_status_t
+_cairo_recording_surface_replay_and_create_regions (cairo_surface_t *surface,
+						    const cairo_matrix_t *surface_transform,
+						    cairo_surface_t *target,
+						    cairo_bool_t surface_is_unbounded)
+{
+    return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface, NULL, surface_transform,
+						     target, NULL,
+						     surface_is_unbounded,
+						     CAIRO_RECORDING_CREATE_REGIONS,
+						     CAIRO_RECORDING_REGION_ALL);
+}
+
+cairo_status_t
+_cairo_recording_surface_replay_region (cairo_surface_t          *surface,
+					const cairo_rectangle_int_t *surface_extents,
+					cairo_surface_t          *target,
+					cairo_recording_region_type_t  region)
+{
+    return _cairo_recording_surface_replay_internal ((cairo_recording_surface_t *) surface,
+						     surface_extents, NULL,
+						     target, NULL, FALSE,
+						     CAIRO_RECORDING_REPLAY,
+						     region);
+}
+
+static cairo_status_t
+_recording_surface_get_ink_bbox (cairo_recording_surface_t *surface,
+				 cairo_box_t *bbox,
+				 const cairo_matrix_t *transform)
+{
+    cairo_surface_t *null_surface;
+    cairo_surface_t *analysis_surface;
+    cairo_status_t status;
+
+    null_surface = _cairo_null_surface_create (surface->base.content);
+    analysis_surface = _cairo_analysis_surface_create (null_surface);
+    cairo_surface_destroy (null_surface);
+
+    status = analysis_surface->status;
+    if (unlikely (status))
+	return status;
+
+    if (transform != NULL)
+	_cairo_analysis_surface_set_ctm (analysis_surface, transform);
+
+    status = _cairo_recording_surface_replay (&surface->base, analysis_surface);
+    _cairo_analysis_surface_get_bounding_box (analysis_surface, bbox);
+    cairo_surface_destroy (analysis_surface);
+
+    return status;
+}
+
+/**
+ * cairo_recording_surface_ink_extents:
+ * @surface: a #cairo_recording_surface_t
+ * @x0: the x-coordinate of the top-left of the ink bounding box
+ * @y0: the y-coordinate of the top-left of the ink bounding box
+ * @width: the width of the ink bounding box
+ * @height: the height of the ink bounding box
+ *
+ * Measures the extents of the operations stored within the recording-surface.
+ * This is useful to compute the required size of an image surface (or
+ * equivalent) into which to replay the full sequence of drawing operations.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_recording_surface_ink_extents (cairo_surface_t *surface,
+				     double *x0,
+				     double *y0,
+				     double *width,
+				     double *height)
+{
+    cairo_status_t status;
+    cairo_box_t bbox;
+
+    memset (&bbox, 0, sizeof (bbox));
+
+    if (surface->status || ! _cairo_surface_is_recording (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	goto DONE;
+    }
+
+    status = _recording_surface_get_ink_bbox ((cairo_recording_surface_t *) surface,
+					 &bbox,
+					 NULL);
+    if (unlikely (status))
+	status = _cairo_surface_set_error (surface, status);
+
+DONE:
+    if (x0)
+	*x0 = _cairo_fixed_to_double (bbox.p1.x);
+    if (y0)
+	*y0 = _cairo_fixed_to_double (bbox.p1.y);
+    if (width)
+	*width = _cairo_fixed_to_double (bbox.p2.x - bbox.p1.x);
+    if (height)
+	*height = _cairo_fixed_to_double (bbox.p2.y - bbox.p1.y);
+}
+
+cairo_status_t
+_cairo_recording_surface_get_bbox (cairo_recording_surface_t *surface,
+				   cairo_box_t *bbox,
+				   const cairo_matrix_t *transform)
+{
+    if (! surface->unbounded) {
+	_cairo_box_from_rectangle (bbox, &surface->extents);
+	if (transform != NULL)
+	    _cairo_matrix_transform_bounding_box_fixed (transform, bbox, NULL);
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    return _recording_surface_get_ink_bbox (surface, bbox, transform);
+}
+
+cairo_status_t
+_cairo_recording_surface_get_ink_bbox (cairo_recording_surface_t *surface,
+				       cairo_box_t *bbox,
+				       const cairo_matrix_t *transform)
+{
+    return _recording_surface_get_ink_bbox (surface, bbox, transform);
+}
+
+/**
+ * cairo_recording_surface_get_extents:
+ * @surface: a #cairo_recording_surface_t
+ * @extents: the #cairo_rectangle_t to be assigned the extents
+ *
+ * Get the extents of the recording-surface.
+ *
+ * Return value: %TRUE if the surface is bounded, of recording type, and
+ * not in an error state, otherwise %FALSE
+ *
+ * Since: 1.12
+ **/
+cairo_bool_t
+cairo_recording_surface_get_extents (cairo_surface_t *surface,
+				     cairo_rectangle_t *extents)
+{
+    cairo_recording_surface_t *record;
+
+    if (surface->status || ! _cairo_surface_is_recording (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return FALSE;
+    }
+
+    record = (cairo_recording_surface_t *)surface;
+    if (record->unbounded)
+	return FALSE;
+
+    *extents = record->extents_pixels;
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_recording_surface_has_only_bilevel_alpha (cairo_recording_surface_t *surface)
+{
+    return surface->has_bilevel_alpha;
+}
+
+cairo_bool_t
+_cairo_recording_surface_has_only_op_over (cairo_recording_surface_t *surface)
+{
+    return surface->has_only_op_over;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-rectangle.c b/libs/cairo-1.16.0/src/cairo-rectangle.c
new file mode 100644
index 0000000..2d51d7b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-rectangle.c
@@ -0,0 +1,299 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+
+const cairo_rectangle_int_t _cairo_empty_rectangle = { 0, 0, 0, 0 };
+const cairo_rectangle_int_t _cairo_unbounded_rectangle = {
+     CAIRO_RECT_INT_MIN, CAIRO_RECT_INT_MIN,
+     CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN,
+     CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN,
+};
+
+cairo_private void
+_cairo_box_from_doubles (cairo_box_t *box,
+			 double *x1, double *y1,
+			 double *x2, double *y2)
+{
+    box->p1.x = _cairo_fixed_from_double (*x1);
+    box->p1.y = _cairo_fixed_from_double (*y1);
+    box->p2.x = _cairo_fixed_from_double (*x2);
+    box->p2.y = _cairo_fixed_from_double (*y2);
+}
+
+cairo_private void
+_cairo_box_to_doubles (const cairo_box_t *box,
+		       double *x1, double *y1,
+		       double *x2, double *y2)
+{
+    *x1 = _cairo_fixed_to_double (box->p1.x);
+    *y1 = _cairo_fixed_to_double (box->p1.y);
+    *x2 = _cairo_fixed_to_double (box->p2.x);
+    *y2 = _cairo_fixed_to_double (box->p2.y);
+}
+
+void
+_cairo_box_from_rectangle (cairo_box_t                 *box,
+			   const cairo_rectangle_int_t *rect)
+{
+    box->p1.x = _cairo_fixed_from_int (rect->x);
+    box->p1.y = _cairo_fixed_from_int (rect->y);
+    box->p2.x = _cairo_fixed_from_int (rect->x + rect->width);
+    box->p2.y = _cairo_fixed_from_int (rect->y + rect->height);
+}
+
+void
+_cairo_boxes_get_extents (const cairo_box_t *boxes,
+			  int num_boxes,
+			  cairo_box_t *extents)
+{
+    assert (num_boxes > 0);
+    *extents = *boxes;
+    while (--num_boxes)
+	_cairo_box_add_box (extents, ++boxes);
+}
+
+/* XXX We currently have a confusing mix of boxes and rectangles as
+ * exemplified by this function.  A #cairo_box_t is a rectangular area
+ * represented by the coordinates of the upper left and lower right
+ * corners, expressed in fixed point numbers.  A #cairo_rectangle_int_t is
+ * also a rectangular area, but represented by the upper left corner
+ * and the width and the height, as integer numbers.
+ *
+ * This function converts a #cairo_box_t to a #cairo_rectangle_int_t by
+ * increasing the area to the nearest integer coordinates.  We should
+ * standardize on #cairo_rectangle_fixed_t and #cairo_rectangle_int_t, and
+ * this function could be renamed to the more reasonable
+ * _cairo_rectangle_fixed_round.
+ */
+
+void
+_cairo_box_round_to_rectangle (const cairo_box_t     *box,
+			       cairo_rectangle_int_t *rectangle)
+{
+    rectangle->x = _cairo_fixed_integer_floor (box->p1.x);
+    rectangle->y = _cairo_fixed_integer_floor (box->p1.y);
+    rectangle->width = _cairo_fixed_integer_ceil (box->p2.x) - rectangle->x;
+    rectangle->height = _cairo_fixed_integer_ceil (box->p2.y) - rectangle->y;
+}
+
+cairo_bool_t
+_cairo_rectangle_intersect (cairo_rectangle_int_t *dst,
+			    const cairo_rectangle_int_t *src)
+{
+    int x1, y1, x2, y2;
+
+    x1 = MAX (dst->x, src->x);
+    y1 = MAX (dst->y, src->y);
+    /* Beware the unsigned promotion, fortunately we have bits to spare
+     * as (CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN) < UINT_MAX
+     */
+    x2 = MIN (dst->x + (int) dst->width,  src->x + (int) src->width);
+    y2 = MIN (dst->y + (int) dst->height, src->y + (int) src->height);
+
+    if (x1 >= x2 || y1 >= y2) {
+	dst->x = 0;
+	dst->y = 0;
+	dst->width  = 0;
+	dst->height = 0;
+
+	return FALSE;
+    } else {
+	dst->x = x1;
+	dst->y = y1;
+	dst->width  = x2 - x1;
+	dst->height = y2 - y1;
+
+	return TRUE;
+    }
+}
+
+/* Extends the dst rectangle to also contain src.
+ * If one of the rectangles is empty, the result is undefined
+ */
+void
+_cairo_rectangle_union (cairo_rectangle_int_t *dst,
+			const cairo_rectangle_int_t *src)
+{
+    int x1, y1, x2, y2;
+
+    x1 = MIN (dst->x, src->x);
+    y1 = MIN (dst->y, src->y);
+    /* Beware the unsigned promotion, fortunately we have bits to spare
+     * as (CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN) < UINT_MAX
+     */
+    x2 = MAX (dst->x + (int) dst->width,  src->x + (int) src->width);
+    y2 = MAX (dst->y + (int) dst->height, src->y + (int) src->height);
+
+    dst->x = x1;
+    dst->y = y1;
+    dst->width  = x2 - x1;
+    dst->height = y2 - y1;
+}
+
+#define P1x (line->p1.x)
+#define P1y (line->p1.y)
+#define P2x (line->p2.x)
+#define P2y (line->p2.y)
+#define B1x (box->p1.x)
+#define B1y (box->p1.y)
+#define B2x (box->p2.x)
+#define B2y (box->p2.y)
+
+/*
+ * Check whether any part of line intersects box.  This function essentially
+ * computes whether the ray starting at line->p1 in the direction of line->p2
+ * intersects the box before it reaches p2.  Normally, this is done
+ * by dividing by the lengths of the line projected onto each axis.  Because
+ * we're in fixed point, this function does a bit more work to avoid having to
+ * do the division -- we don't care about the actual intersection point, so
+ * it's of no interest to us.
+ */
+
+cairo_bool_t
+_cairo_box_intersects_line_segment (const cairo_box_t *box, cairo_line_t *line)
+{
+    cairo_fixed_t t1=0, t2=0, t3=0, t4=0;
+    cairo_int64_t t1y, t2y, t3x, t4x;
+
+    cairo_fixed_t xlen, ylen;
+
+    if (_cairo_box_contains_point (box, &line->p1) ||
+	_cairo_box_contains_point (box, &line->p2))
+	return TRUE;
+
+    xlen = P2x - P1x;
+    ylen = P2y - P1y;
+
+    if (xlen) {
+	if (xlen > 0) {
+	    t1 = B1x - P1x;
+	    t2 = B2x - P1x;
+	} else {
+	    t1 = P1x - B2x;
+	    t2 = P1x - B1x;
+	    xlen = - xlen;
+	}
+
+	if ((t1 < 0 || t1 > xlen) &&
+	    (t2 < 0 || t2 > xlen))
+	    return FALSE;
+    } else {
+	/* Fully vertical line -- check that X is in bounds */
+	if (P1x < B1x || P1x > B2x)
+	    return FALSE;
+    }
+
+    if (ylen) {
+	if (ylen > 0) {
+	    t3 = B1y - P1y;
+	    t4 = B2y - P1y;
+	} else {
+	    t3 = P1y - B2y;
+	    t4 = P1y - B1y;
+	    ylen = - ylen;
+	}
+
+	if ((t3 < 0 || t3 > ylen) &&
+	    (t4 < 0 || t4 > ylen))
+	    return FALSE;
+    } else {
+	/* Fully horizontal line -- check Y */
+	if (P1y < B1y || P1y > B2y)
+	    return FALSE;
+    }
+
+    /* If we had a horizontal or vertical line, then it's already been checked */
+    if (P1x == P2x || P1y == P2y)
+	return TRUE;
+
+    /* Check overlap.  Note that t1 < t2 and t3 < t4 here. */
+    t1y = _cairo_int32x32_64_mul (t1, ylen);
+    t2y = _cairo_int32x32_64_mul (t2, ylen);
+    t3x = _cairo_int32x32_64_mul (t3, xlen);
+    t4x = _cairo_int32x32_64_mul (t4, xlen);
+
+    if (_cairo_int64_lt(t1y, t4x) &&
+	_cairo_int64_lt(t3x, t2y))
+	return TRUE;
+
+    return FALSE;
+}
+
+static cairo_status_t
+_cairo_box_add_spline_point (void *closure,
+			     const cairo_point_t *point,
+			     const cairo_slope_t *tangent)
+{
+    _cairo_box_add_point (closure, point);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* assumes a has been previously added */
+void
+_cairo_box_add_curve_to (cairo_box_t *extents,
+			 const cairo_point_t *a,
+			 const cairo_point_t *b,
+			 const cairo_point_t *c,
+			 const cairo_point_t *d)
+{
+    _cairo_box_add_point (extents, d);
+    if (!_cairo_box_contains_point (extents, b) ||
+	!_cairo_box_contains_point (extents, c))
+    {
+	cairo_status_t status;
+
+	status = _cairo_spline_bound (_cairo_box_add_spline_point,
+				      extents, a, b, c, d);
+	assert (status == CAIRO_STATUS_SUCCESS);
+    }
+}
+
+void
+_cairo_rectangle_int_from_double (cairo_rectangle_int_t *recti,
+				  const cairo_rectangle_t *rectf)
+{
+	recti->x = floor (rectf->x);
+	recti->y = floor (rectf->y);
+	recti->width  = ceil (rectf->x + rectf->width) - floor (rectf->x);
+	recti->height = ceil (rectf->y + rectf->height) - floor (rectf->y);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-rectangular-scan-converter.c b/libs/cairo-1.16.0/src/cairo-rectangular-scan-converter.c
new file mode 100644
index 0000000..e353b34
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-rectangular-scan-converter.c
@@ -0,0 +1,791 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-combsort-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-list-private.h"
+#include "cairo-spans-private.h"
+
+#include <setjmp.h>
+
+typedef struct _rectangle {
+    struct _rectangle *next, *prev;
+    cairo_fixed_t left, right;
+    cairo_fixed_t top, bottom;
+    int32_t top_y, bottom_y;
+    int dir;
+} rectangle_t;
+
+#define UNROLL3(x) x x x
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+typedef struct _pqueue {
+    int size, max_size;
+
+    rectangle_t **elements;
+    rectangle_t *elements_embedded[1024];
+} pqueue_t;
+
+typedef struct {
+    rectangle_t **start;
+    pqueue_t stop;
+    rectangle_t head, tail;
+    rectangle_t *insert_cursor;
+    int32_t current_y;
+    int32_t xmin, xmax;
+
+    struct coverage {
+	struct cell {
+	    struct cell *prev, *next;
+	    int x, covered, uncovered;
+	} head, tail, *cursor;
+	unsigned int count;
+	cairo_freepool_t pool;
+    } coverage;
+
+    cairo_half_open_span_t spans_stack[CAIRO_STACK_ARRAY_LENGTH (cairo_half_open_span_t)];
+    cairo_half_open_span_t *spans;
+    unsigned int num_spans;
+    unsigned int size_spans;
+
+    jmp_buf jmpbuf;
+} sweep_line_t;
+
+static inline int
+rectangle_compare_start (const rectangle_t *a,
+			 const rectangle_t *b)
+{
+    int cmp;
+
+    cmp = a->top_y - b->top_y;
+    if (cmp)
+	return cmp;
+
+    return a->left - b->left;
+}
+
+static inline int
+rectangle_compare_stop (const rectangle_t *a,
+			const rectangle_t *b)
+{
+    return a->bottom_y - b->bottom_y;
+}
+
+static inline void
+pqueue_init (pqueue_t *pq)
+{
+    pq->max_size = ARRAY_LENGTH (pq->elements_embedded);
+    pq->size = 0;
+
+    pq->elements = pq->elements_embedded;
+    pq->elements[PQ_FIRST_ENTRY] = NULL;
+}
+
+static inline void
+pqueue_fini (pqueue_t *pq)
+{
+    if (pq->elements != pq->elements_embedded)
+	free (pq->elements);
+}
+
+static cairo_bool_t
+pqueue_grow (pqueue_t *pq)
+{
+    rectangle_t **new_elements;
+    pq->max_size *= 2;
+
+    if (pq->elements == pq->elements_embedded) {
+	new_elements = _cairo_malloc_ab (pq->max_size,
+					 sizeof (rectangle_t *));
+	if (unlikely (new_elements == NULL))
+	    return FALSE;
+
+	memcpy (new_elements, pq->elements_embedded,
+		sizeof (pq->elements_embedded));
+    } else {
+	new_elements = _cairo_realloc_ab (pq->elements,
+					  pq->max_size,
+					  sizeof (rectangle_t *));
+	if (unlikely (new_elements == NULL))
+	    return FALSE;
+    }
+
+    pq->elements = new_elements;
+    return TRUE;
+}
+
+static inline void
+pqueue_push (sweep_line_t *sweep, rectangle_t *rectangle)
+{
+    rectangle_t **elements;
+    int i, parent;
+
+    if (unlikely (sweep->stop.size + 1 == sweep->stop.max_size)) {
+	if (unlikely (! pqueue_grow (&sweep->stop)))
+	    longjmp (sweep->jmpbuf,
+		     _cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    elements = sweep->stop.elements;
+    for (i = ++sweep->stop.size;
+	 i != PQ_FIRST_ENTRY &&
+	 rectangle_compare_stop (rectangle,
+				 elements[parent = PQ_PARENT_INDEX (i)]) < 0;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = rectangle;
+}
+
+static inline void
+pqueue_pop (pqueue_t *pq)
+{
+    rectangle_t **elements = pq->elements;
+    rectangle_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    rectangle_compare_stop (elements[child+1],
+				    elements[child]) < 0)
+	{
+	    child++;
+	}
+
+	if (rectangle_compare_stop (elements[child], tail) >= 0)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static inline rectangle_t *
+peek_stop (sweep_line_t *sweep)
+{
+    return sweep->stop.elements[PQ_FIRST_ENTRY];
+}
+
+CAIRO_COMBSORT_DECLARE (rectangle_sort, rectangle_t *, rectangle_compare_start)
+
+static void
+sweep_line_init (sweep_line_t *sweep)
+{
+    sweep->head.left = INT_MIN;
+    sweep->head.next = &sweep->tail;
+    sweep->tail.left = INT_MAX;
+    sweep->tail.prev = &sweep->head;
+    sweep->insert_cursor = &sweep->tail;
+
+    _cairo_freepool_init (&sweep->coverage.pool, sizeof (struct cell));
+
+    sweep->spans = sweep->spans_stack;
+    sweep->size_spans = ARRAY_LENGTH (sweep->spans_stack);
+
+    sweep->coverage.head.prev = NULL;
+    sweep->coverage.head.x = INT_MIN;
+    sweep->coverage.tail.next = NULL;
+    sweep->coverage.tail.x = INT_MAX;
+
+    pqueue_init (&sweep->stop);
+}
+
+static void
+sweep_line_fini (sweep_line_t *sweep)
+{
+    _cairo_freepool_fini (&sweep->coverage.pool);
+    pqueue_fini (&sweep->stop);
+
+    if (sweep->spans != sweep->spans_stack)
+	free (sweep->spans);
+}
+
+static inline void
+add_cell (sweep_line_t *sweep, int x, int covered, int uncovered)
+{
+    struct cell *cell;
+
+    cell = sweep->coverage.cursor;
+    if (cell->x > x) {
+	do {
+	    UNROLL3({
+		if (cell->prev->x < x)
+		    break;
+		cell = cell->prev;
+	    })
+	} while (TRUE);
+    } else {
+	if (cell->x == x)
+	    goto found;
+
+	do {
+	    UNROLL3({
+		cell = cell->next;
+		if (cell->x >= x)
+		    break;
+	    })
+	} while (TRUE);
+    }
+
+    if (x != cell->x) {
+	struct cell *c;
+
+	sweep->coverage.count++;
+
+	c = _cairo_freepool_alloc (&sweep->coverage.pool);
+	if (unlikely (c == NULL)) {
+	    longjmp (sweep->jmpbuf,
+		     _cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+
+	cell->prev->next = c;
+	c->prev = cell->prev;
+	c->next = cell;
+	cell->prev = c;
+
+	c->x = x;
+	c->covered = 0;
+	c->uncovered = 0;
+
+	cell = c;
+    }
+
+found:
+    cell->covered += covered;
+    cell->uncovered += uncovered;
+    sweep->coverage.cursor = cell;
+}
+
+static inline void
+_active_edges_to_spans (sweep_line_t	*sweep)
+{
+    int32_t y = sweep->current_y;
+    rectangle_t *rectangle;
+    int coverage, prev_coverage;
+    int prev_x;
+    struct cell *cell;
+
+    sweep->num_spans = 0;
+    if (sweep->head.next == &sweep->tail)
+	return;
+
+    sweep->coverage.head.next = &sweep->coverage.tail;
+    sweep->coverage.tail.prev = &sweep->coverage.head;
+    sweep->coverage.cursor = &sweep->coverage.tail;
+    sweep->coverage.count = 0;
+
+    /* XXX cell coverage only changes when a rectangle appears or
+     * disappears. Try only modifying coverage at such times.
+     */
+    for (rectangle = sweep->head.next;
+	 rectangle != &sweep->tail;
+	 rectangle = rectangle->next)
+    {
+	int height;
+	int frac, i;
+
+	if (y == rectangle->bottom_y) {
+	    height = rectangle->bottom & CAIRO_FIXED_FRAC_MASK;
+	    if (height == 0)
+		continue;
+	} else
+	    height = CAIRO_FIXED_ONE;
+	if (y == rectangle->top_y)
+	    height -= rectangle->top & CAIRO_FIXED_FRAC_MASK;
+	height *= rectangle->dir;
+
+	i = _cairo_fixed_integer_part (rectangle->left),
+	frac = _cairo_fixed_fractional_part (rectangle->left);
+	add_cell (sweep, i,
+		  (CAIRO_FIXED_ONE-frac) * height,
+		  frac * height);
+
+	i = _cairo_fixed_integer_part (rectangle->right),
+	frac = _cairo_fixed_fractional_part (rectangle->right);
+	add_cell (sweep, i,
+		  -(CAIRO_FIXED_ONE-frac) * height,
+		  -frac * height);
+    }
+
+    if (2*sweep->coverage.count >= sweep->size_spans) {
+	unsigned size;
+
+	size = sweep->size_spans;
+	while (size <= 2*sweep->coverage.count)
+	    size <<= 1;
+
+	if (sweep->spans != sweep->spans_stack)
+	    free (sweep->spans);
+
+	sweep->spans = _cairo_malloc_ab (size, sizeof (cairo_half_open_span_t));
+	if (unlikely (sweep->spans == NULL))
+	    longjmp (sweep->jmpbuf, _cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+	sweep->size_spans = size;
+    }
+
+    prev_coverage = coverage = 0;
+    prev_x = INT_MIN;
+    for (cell = sweep->coverage.head.next; cell != &sweep->coverage.tail; cell = cell->next) {
+	if (cell->x != prev_x && coverage != prev_coverage) {
+	    int n = sweep->num_spans++;
+	    int c = coverage >> (CAIRO_FIXED_FRAC_BITS * 2 - 8);
+	    sweep->spans[n].x = prev_x;
+	    sweep->spans[n].inverse = 0;
+	    sweep->spans[n].coverage = c - (c >> 8);
+	    prev_coverage = coverage;
+	}
+
+	coverage += cell->covered;
+	if (coverage != prev_coverage) {
+	    int n = sweep->num_spans++;
+	    int c = coverage >> (CAIRO_FIXED_FRAC_BITS * 2 - 8);
+	    sweep->spans[n].x = cell->x;
+	    sweep->spans[n].inverse = 0;
+	    sweep->spans[n].coverage = c - (c >> 8);
+	    prev_coverage = coverage;
+	}
+	coverage += cell->uncovered;
+	prev_x = cell->x + 1;
+    }
+    _cairo_freepool_reset (&sweep->coverage.pool);
+
+    if (sweep->num_spans) {
+	if (prev_x <= sweep->xmax) {
+	    int n = sweep->num_spans++;
+	    int c = coverage >> (CAIRO_FIXED_FRAC_BITS * 2 - 8);
+	    sweep->spans[n].x = prev_x;
+	    sweep->spans[n].inverse = 0;
+	    sweep->spans[n].coverage = c - (c >> 8);
+	}
+
+	if (coverage && prev_x < sweep->xmax) {
+	    int n = sweep->num_spans++;
+	    sweep->spans[n].x = sweep->xmax;
+	    sweep->spans[n].inverse = 1;
+	    sweep->spans[n].coverage = 0;
+	}
+    }
+}
+
+static inline void
+sweep_line_delete (sweep_line_t	*sweep,
+			     rectangle_t	*rectangle)
+{
+    if (sweep->insert_cursor == rectangle)
+	sweep->insert_cursor = rectangle->next;
+
+    rectangle->prev->next = rectangle->next;
+    rectangle->next->prev = rectangle->prev;
+
+    pqueue_pop (&sweep->stop);
+}
+
+static inline void
+sweep_line_insert (sweep_line_t	*sweep,
+		   rectangle_t	*rectangle)
+{
+    rectangle_t *pos;
+
+    pos = sweep->insert_cursor;
+    if (pos->left != rectangle->left) {
+	if (pos->left > rectangle->left) {
+	    do {
+		UNROLL3({
+		    if (pos->prev->left < rectangle->left)
+			break;
+		    pos = pos->prev;
+		})
+	    } while (TRUE);
+	} else {
+	    do {
+		UNROLL3({
+		    pos = pos->next;
+		    if (pos->left >= rectangle->left)
+			break;
+		});
+	    } while (TRUE);
+	}
+    }
+
+    pos->prev->next = rectangle;
+    rectangle->prev = pos->prev;
+    rectangle->next = pos;
+    pos->prev = rectangle;
+    sweep->insert_cursor = rectangle;
+
+    pqueue_push (sweep, rectangle);
+}
+
+static void
+render_rows (sweep_line_t *sweep_line,
+	     cairo_span_renderer_t *renderer,
+	     int height)
+{
+    cairo_status_t status;
+
+    _active_edges_to_spans (sweep_line);
+
+    status = renderer->render_rows (renderer,
+				    sweep_line->current_y, height,
+				    sweep_line->spans,
+				    sweep_line->num_spans);
+    if (unlikely (status))
+	longjmp (sweep_line->jmpbuf, status);
+}
+
+static cairo_status_t
+generate (cairo_rectangular_scan_converter_t *self,
+	  cairo_span_renderer_t	*renderer,
+	  rectangle_t **rectangles)
+{
+    sweep_line_t sweep_line;
+    rectangle_t *start, *stop;
+    cairo_status_t status;
+
+    sweep_line_init (&sweep_line);
+    sweep_line.xmin = _cairo_fixed_integer_part (self->extents.p1.x);
+    sweep_line.xmax = _cairo_fixed_integer_part (self->extents.p2.x);
+    sweep_line.start = rectangles;
+    if ((status = setjmp (sweep_line.jmpbuf)))
+	goto out;
+
+    sweep_line.current_y = _cairo_fixed_integer_part (self->extents.p1.y);
+    start = *sweep_line.start++;
+    do {
+	if (start->top_y != sweep_line.current_y) {
+	    render_rows (&sweep_line, renderer,
+			 start->top_y - sweep_line.current_y);
+	    sweep_line.current_y = start->top_y;
+	}
+
+	do {
+	    sweep_line_insert (&sweep_line, start);
+	    start = *sweep_line.start++;
+	    if (start == NULL)
+		goto end;
+	    if (start->top_y != sweep_line.current_y)
+		break;
+	} while (TRUE);
+
+	render_rows (&sweep_line, renderer, 1);
+
+	stop = peek_stop (&sweep_line);
+	while (stop->bottom_y == sweep_line.current_y) {
+	    sweep_line_delete (&sweep_line, stop);
+	    stop = peek_stop (&sweep_line);
+	    if (stop == NULL)
+		break;
+	}
+
+	sweep_line.current_y++;
+
+	while (stop != NULL && stop->bottom_y < start->top_y) {
+	    if (stop->bottom_y != sweep_line.current_y) {
+		render_rows (&sweep_line, renderer,
+			     stop->bottom_y - sweep_line.current_y);
+		sweep_line.current_y = stop->bottom_y;
+	    }
+
+	    render_rows (&sweep_line, renderer, 1);
+
+	    do {
+		sweep_line_delete (&sweep_line, stop);
+		stop = peek_stop (&sweep_line);
+	    } while (stop != NULL && stop->bottom_y == sweep_line.current_y);
+
+	    sweep_line.current_y++;
+	}
+    } while (TRUE);
+
+  end:
+    render_rows (&sweep_line, renderer, 1);
+
+    stop = peek_stop (&sweep_line);
+    while (stop->bottom_y == sweep_line.current_y) {
+	sweep_line_delete (&sweep_line, stop);
+	stop = peek_stop (&sweep_line);
+	if (stop == NULL)
+	    goto out;
+    }
+
+    while (++sweep_line.current_y < _cairo_fixed_integer_part (self->extents.p2.y)) {
+	if (stop->bottom_y != sweep_line.current_y) {
+	    render_rows (&sweep_line, renderer,
+			 stop->bottom_y - sweep_line.current_y);
+	    sweep_line.current_y = stop->bottom_y;
+	}
+
+	render_rows (&sweep_line, renderer, 1);
+
+	do {
+	    sweep_line_delete (&sweep_line, stop);
+	    stop = peek_stop (&sweep_line);
+	    if (stop == NULL)
+		goto out;
+	} while (stop->bottom_y == sweep_line.current_y);
+
+    }
+
+  out:
+    sweep_line_fini (&sweep_line);
+
+    return status;
+}
+static void generate_row(cairo_span_renderer_t *renderer,
+			 const rectangle_t *r,
+			 int y, int h,
+			 uint16_t coverage)
+{
+    cairo_half_open_span_t spans[4];
+    unsigned int num_spans = 0;
+    int x1 = _cairo_fixed_integer_part (r->left);
+    int x2 = _cairo_fixed_integer_part (r->right);
+    if (x2 > x1) {
+	if (! _cairo_fixed_is_integer (r->left)) {
+	    spans[num_spans].x = x1;
+	    spans[num_spans].coverage =
+		coverage * (256 - _cairo_fixed_fractional_part (r->left)) >> 8;
+	    num_spans++;
+	    x1++;
+	}
+
+	if (x2 > x1) {
+	    spans[num_spans].x = x1;
+	    spans[num_spans].coverage = coverage - (coverage >> 8);
+	    num_spans++;
+	}
+
+	if (! _cairo_fixed_is_integer (r->right)) {
+	    spans[num_spans].x = x2++;
+	    spans[num_spans].coverage =
+		coverage * _cairo_fixed_fractional_part (r->right) >> 8;
+	    num_spans++;
+	}
+    } else {
+	spans[num_spans].x = x2++;
+	spans[num_spans].coverage = coverage * (r->right - r->left) >> 8;
+	num_spans++;
+    }
+
+    spans[num_spans].x = x2;
+    spans[num_spans].coverage = 0;
+    num_spans++;
+
+    renderer->render_rows (renderer, y, h, spans, num_spans);
+}
+
+static cairo_status_t
+generate_box (cairo_rectangular_scan_converter_t *self,
+	      cairo_span_renderer_t	*renderer)
+{
+    const rectangle_t *r = self->chunks.base;
+    int y1 = _cairo_fixed_integer_part (r->top);
+    int y2 = _cairo_fixed_integer_part (r->bottom);
+    if (y2 > y1) {
+	if (! _cairo_fixed_is_integer (r->top)) {
+	    generate_row(renderer, r, y1, 1,
+			 256 - _cairo_fixed_fractional_part (r->top));
+	    y1++;
+	}
+
+	if (y2 > y1)
+	    generate_row(renderer, r, y1, y2-y1, 256);
+
+	if (! _cairo_fixed_is_integer (r->bottom))
+	    generate_row(renderer, r, y2, 1,
+			 _cairo_fixed_fractional_part (r->bottom));
+    } else
+	generate_row(renderer, r, y1, 1, r->bottom - r->top);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_rectangular_scan_converter_generate (void			*converter,
+					    cairo_span_renderer_t	*renderer)
+{
+    cairo_rectangular_scan_converter_t *self = converter;
+    rectangle_t *rectangles_stack[CAIRO_STACK_ARRAY_LENGTH (rectangle_t *)];
+    rectangle_t **rectangles;
+    struct _cairo_rectangular_scan_converter_chunk *chunk;
+    cairo_status_t status;
+    int i, j;
+
+    if (unlikely (self->num_rectangles == 0)) {
+	return renderer->render_rows (renderer,
+				      _cairo_fixed_integer_part (self->extents.p1.y),
+				      _cairo_fixed_integer_part (self->extents.p2.y - self->extents.p1.y),
+				      NULL, 0);
+    }
+
+    if (self->num_rectangles == 1)
+	return generate_box (self, renderer);
+
+    rectangles = rectangles_stack;
+    if (unlikely (self->num_rectangles >= ARRAY_LENGTH (rectangles_stack))) {
+	rectangles = _cairo_malloc_ab (self->num_rectangles + 1,
+				       sizeof (rectangle_t *));
+	if (unlikely (rectangles == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    j = 0;
+    for (chunk = &self->chunks; chunk != NULL; chunk = chunk->next) {
+	rectangle_t *rectangle;
+
+	rectangle = chunk->base;
+	for (i = 0; i < chunk->count; i++)
+	    rectangles[j++] = &rectangle[i];
+    }
+    rectangle_sort (rectangles, j);
+    rectangles[j] = NULL;
+
+    status = generate (self, renderer, rectangles);
+
+    if (rectangles != rectangles_stack)
+	free (rectangles);
+
+    return status;
+}
+
+static rectangle_t *
+_allocate_rectangle (cairo_rectangular_scan_converter_t *self)
+{
+    rectangle_t *rectangle;
+    struct _cairo_rectangular_scan_converter_chunk *chunk;
+
+    chunk = self->tail;
+    if (chunk->count == chunk->size) {
+	int size;
+
+	size = chunk->size * 2;
+	chunk->next = _cairo_malloc_ab_plus_c (size,
+					       sizeof (rectangle_t),
+					       sizeof (struct _cairo_rectangular_scan_converter_chunk));
+
+	if (unlikely (chunk->next == NULL))
+	    return NULL;
+
+	chunk = chunk->next;
+	chunk->next = NULL;
+	chunk->count = 0;
+	chunk->size = size;
+	chunk->base = chunk + 1;
+	self->tail = chunk;
+    }
+
+    rectangle = chunk->base;
+    return rectangle + chunk->count++;
+}
+
+cairo_status_t
+_cairo_rectangular_scan_converter_add_box (cairo_rectangular_scan_converter_t *self,
+					   const cairo_box_t *box,
+					   int dir)
+{
+    rectangle_t *rectangle;
+
+    rectangle = _allocate_rectangle (self);
+    if (unlikely (rectangle == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    rectangle->dir = dir;
+    rectangle->left  = MAX (box->p1.x, self->extents.p1.x);
+    rectangle->right = MIN (box->p2.x, self->extents.p2.x);
+    if (unlikely (rectangle->right <= rectangle->left)) {
+	self->tail->count--;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    rectangle->top = MAX (box->p1.y, self->extents.p1.y);
+    rectangle->top_y  = _cairo_fixed_integer_floor (rectangle->top);
+    rectangle->bottom = MIN (box->p2.y, self->extents.p2.y);
+    rectangle->bottom_y = _cairo_fixed_integer_floor (rectangle->bottom);
+    if (likely (rectangle->bottom > rectangle->top))
+	self->num_rectangles++;
+    else
+	self->tail->count--;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_rectangular_scan_converter_destroy (void *converter)
+{
+    cairo_rectangular_scan_converter_t *self = converter;
+    struct _cairo_rectangular_scan_converter_chunk *chunk, *next;
+
+    for (chunk = self->chunks.next; chunk != NULL; chunk = next) {
+	next = chunk->next;
+	free (chunk);
+    }
+}
+
+void
+_cairo_rectangular_scan_converter_init (cairo_rectangular_scan_converter_t *self,
+					const cairo_rectangle_int_t *extents)
+{
+    self->base.destroy = _cairo_rectangular_scan_converter_destroy;
+    self->base.generate = _cairo_rectangular_scan_converter_generate;
+
+    _cairo_box_from_rectangle (&self->extents, extents);
+
+    self->chunks.base = self->buf;
+    self->chunks.next = NULL;
+    self->chunks.count = 0;
+    self->chunks.size = sizeof (self->buf) / sizeof (rectangle_t);
+    self->tail = &self->chunks;
+
+    self->num_rectangles = 0;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-reference-count-private.h b/libs/cairo-1.16.0/src/cairo-reference-count-private.h
new file mode 100644
index 0000000..75fdf35
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-reference-count-private.h
@@ -0,0 +1,62 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_REFRENCE_COUNT_PRIVATE_H
+#define CAIRO_REFRENCE_COUNT_PRIVATE_H
+
+#include "cairo-atomic-private.h"
+
+/* Encapsulate operations on the object's reference count */
+typedef struct {
+    cairo_atomic_int_t ref_count;
+} cairo_reference_count_t;
+
+#define _cairo_reference_count_inc(RC) _cairo_atomic_int_inc (&(RC)->ref_count)
+#define _cairo_reference_count_dec(RC) _cairo_atomic_int_dec (&(RC)->ref_count)
+#define _cairo_reference_count_dec_and_test(RC) _cairo_atomic_int_dec_and_test (&(RC)->ref_count)
+
+#define CAIRO_REFERENCE_COUNT_INIT(RC, VALUE) ((RC)->ref_count = (VALUE))
+
+#define CAIRO_REFERENCE_COUNT_GET_VALUE(RC) _cairo_atomic_int_get (&(RC)->ref_count)
+
+#define CAIRO_REFERENCE_COUNT_INVALID_VALUE ((cairo_atomic_int_t) -1)
+#define CAIRO_REFERENCE_COUNT_INVALID {CAIRO_REFERENCE_COUNT_INVALID_VALUE}
+
+#define CAIRO_REFERENCE_COUNT_IS_INVALID(RC) (CAIRO_REFERENCE_COUNT_GET_VALUE (RC) == CAIRO_REFERENCE_COUNT_INVALID_VALUE)
+
+#define CAIRO_REFERENCE_COUNT_HAS_REFERENCE(RC) (CAIRO_REFERENCE_COUNT_GET_VALUE (RC) > 0)
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-region-private.h b/libs/cairo-1.16.0/src/cairo-region-private.h
new file mode 100644
index 0000000..549e508
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-region-private.h
@@ -0,0 +1,77 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *      Vladimir Vukicevic <vladimir@pobox.com>
+ *      Søren Sandmann <sandmann@daimi.au.dk>
+ */
+
+#ifndef CAIRO_REGION_PRIVATE_H
+#define CAIRO_REGION_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-reference-count-private.h"
+
+#include <pixman.h>
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo_region {
+    cairo_reference_count_t ref_count;
+    cairo_status_t status;
+
+    pixman_region32_t rgn;
+};
+
+cairo_private cairo_region_t *
+_cairo_region_create_in_error (cairo_status_t status);
+
+cairo_private void
+_cairo_region_init (cairo_region_t *region);
+
+cairo_private void
+_cairo_region_init_rectangle (cairo_region_t *region,
+			      const cairo_rectangle_int_t *rectangle);
+
+cairo_private void
+_cairo_region_fini (cairo_region_t *region);
+
+cairo_private cairo_region_t *
+_cairo_region_create_from_boxes (const cairo_box_t *boxes, int count);
+
+cairo_private cairo_box_t *
+_cairo_region_get_boxes (const cairo_region_t *region, int *nbox);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_REGION_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-region.c b/libs/cairo-1.16.0/src/cairo-region.c
new file mode 100644
index 0000000..c1d35e1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-region.c
@@ -0,0 +1,943 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *      Vladimir Vukicevic <vladimir@pobox.com>
+ *      Søren Sandmann <sandmann@daimi.au.dk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-region-private.h"
+
+/* XXX need to update pixman headers to be const as appropriate */
+#define CONST_CAST (pixman_region32_t *)
+
+/**
+ * SECTION:cairo-region
+ * @Title: Regions
+ * @Short_Description: Representing a pixel-aligned area
+ *
+ * Regions are a simple graphical data type representing an area of 
+ * integer-aligned rectangles. They are often used on raster surfaces 
+ * to track areas of interest, such as change or clip areas.
+ **/
+
+static const cairo_region_t _cairo_region_nil = {
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    CAIRO_STATUS_NO_MEMORY,		/* status */
+};
+
+cairo_region_t *
+_cairo_region_create_in_error (cairo_status_t status)
+{
+    switch (status) {
+    case CAIRO_STATUS_NO_MEMORY:
+	return (cairo_region_t *) &_cairo_region_nil;
+
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	/* fall-through */
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH:
+    case CAIRO_STATUS_INVALID_STATUS:
+    case CAIRO_STATUS_INVALID_CONTENT:
+    case CAIRO_STATUS_INVALID_FORMAT:
+    case CAIRO_STATUS_INVALID_VISUAL:
+    case CAIRO_STATUS_READ_ERROR:
+    case CAIRO_STATUS_WRITE_ERROR:
+    case CAIRO_STATUS_FILE_NOT_FOUND:
+    case CAIRO_STATUS_TEMP_FILE_ERROR:
+    case CAIRO_STATUS_INVALID_STRIDE:
+    case CAIRO_STATUS_INVALID_SIZE:
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH:
+    case CAIRO_STATUS_DEVICE_ERROR:
+    case CAIRO_STATUS_INVALID_RESTORE:
+    case CAIRO_STATUS_INVALID_POP_GROUP:
+    case CAIRO_STATUS_NO_CURRENT_POINT:
+    case CAIRO_STATUS_INVALID_MATRIX:
+    case CAIRO_STATUS_NULL_POINTER:
+    case CAIRO_STATUS_INVALID_STRING:
+    case CAIRO_STATUS_INVALID_PATH_DATA:
+    case CAIRO_STATUS_SURFACE_FINISHED:
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH:
+    case CAIRO_STATUS_INVALID_DASH:
+    case CAIRO_STATUS_INVALID_DSC_COMMENT:
+    case CAIRO_STATUS_INVALID_INDEX:
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE:
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH:
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE:
+    case CAIRO_STATUS_USER_FONT_ERROR:
+    case CAIRO_STATUS_NEGATIVE_COUNT:
+    case CAIRO_STATUS_INVALID_CLUSTERS:
+    case CAIRO_STATUS_INVALID_SLANT:
+    case CAIRO_STATUS_INVALID_WEIGHT:
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED:
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
+    case CAIRO_STATUS_DEVICE_FINISHED:
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+    case CAIRO_STATUS_PNG_ERROR:
+    case CAIRO_STATUS_FREETYPE_ERROR:
+    case CAIRO_STATUS_WIN32_GDI_ERROR:
+    case CAIRO_STATUS_TAG_ERROR:
+    default:
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_region_t *) &_cairo_region_nil;
+    }
+}
+
+/**
+ * _cairo_region_set_error:
+ * @region: a region
+ * @status: a status value indicating an error
+ *
+ * Atomically sets region->status to @status and calls _cairo_error;
+ * Does nothing if status is %CAIRO_STATUS_SUCCESS or any of the internal
+ * status values.
+ *
+ * All assignments of an error status to region->status should happen
+ * through _cairo_region_set_error(). Note that due to the nature of
+ * the atomic operation, it is not safe to call this function on the
+ * nil objects.
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ *
+ * Return value: the error status.
+ **/
+static cairo_status_t
+_cairo_region_set_error (cairo_region_t *region,
+			 cairo_status_t status)
+{
+    if (status == CAIRO_STATUS_SUCCESS)
+        return CAIRO_STATUS_SUCCESS;
+
+    /* Don't overwrite an existing error. This preserves the first
+     * error, which is the most significant. */
+    _cairo_status_set_error (&region->status, status);
+
+    return _cairo_error (status);
+}
+
+void
+_cairo_region_init (cairo_region_t *region)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (region, sizeof (cairo_region_t)));
+
+    region->status = CAIRO_STATUS_SUCCESS;
+    CAIRO_REFERENCE_COUNT_INIT (&region->ref_count, 0);
+    pixman_region32_init (&region->rgn);
+}
+
+void
+_cairo_region_init_rectangle (cairo_region_t *region,
+			      const cairo_rectangle_int_t *rectangle)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (region, sizeof (cairo_region_t)));
+
+    region->status = CAIRO_STATUS_SUCCESS;
+    CAIRO_REFERENCE_COUNT_INIT (&region->ref_count, 0);
+    pixman_region32_init_rect (&region->rgn,
+			       rectangle->x, rectangle->y,
+			       rectangle->width, rectangle->height);
+}
+
+void
+_cairo_region_fini (cairo_region_t *region)
+{
+    assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&region->ref_count));
+    pixman_region32_fini (&region->rgn);
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (region, sizeof (cairo_region_t)));
+}
+
+/**
+ * cairo_region_create:
+ *
+ * Allocates a new empty region object.
+ *
+ * Return value: A newly allocated #cairo_region_t. Free with
+ *   cairo_region_destroy(). This function always returns a
+ *   valid pointer; if memory cannot be allocated, then a special
+ *   error object is returned where all operations on the object do nothing.
+ *   You can check for this with cairo_region_status().
+ *
+ * Since: 1.10
+ **/
+cairo_region_t *
+cairo_region_create (void)
+{
+    cairo_region_t *region;
+
+    region = _cairo_malloc (sizeof (cairo_region_t));
+    if (region == NULL)
+	return (cairo_region_t *) &_cairo_region_nil;
+
+    region->status = CAIRO_STATUS_SUCCESS;
+    CAIRO_REFERENCE_COUNT_INIT (&region->ref_count, 1);
+
+    pixman_region32_init (&region->rgn);
+
+    return region;
+}
+slim_hidden_def (cairo_region_create);
+
+/**
+ * cairo_region_create_rectangles:
+ * @rects: an array of @count rectangles
+ * @count: number of rectangles
+ *
+ * Allocates a new region object containing the union of all given @rects.
+ *
+ * Return value: A newly allocated #cairo_region_t. Free with
+ *   cairo_region_destroy(). This function always returns a
+ *   valid pointer; if memory cannot be allocated, then a special
+ *   error object is returned where all operations on the object do nothing.
+ *   You can check for this with cairo_region_status().
+ *
+ * Since: 1.10
+ **/
+cairo_region_t *
+cairo_region_create_rectangles (const cairo_rectangle_int_t *rects,
+				int count)
+{
+    pixman_box32_t stack_pboxes[CAIRO_STACK_ARRAY_LENGTH (pixman_box32_t)];
+    pixman_box32_t *pboxes = stack_pboxes;
+    cairo_region_t *region;
+    int i;
+
+    region = _cairo_malloc (sizeof (cairo_region_t));
+    if (unlikely (region == NULL))
+	return _cairo_region_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    CAIRO_REFERENCE_COUNT_INIT (&region->ref_count, 1);
+    region->status = CAIRO_STATUS_SUCCESS;
+
+    if (count == 1) {
+	pixman_region32_init_rect (&region->rgn,
+				   rects->x, rects->y,
+				   rects->width, rects->height);
+
+	return region;
+    }
+
+    if (count > ARRAY_LENGTH (stack_pboxes)) {
+	pboxes = _cairo_malloc_ab (count, sizeof (pixman_box32_t));
+	if (unlikely (pboxes == NULL)) {
+	    free (region);
+	    return _cairo_region_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    for (i = 0; i < count; i++) {
+	pboxes[i].x1 = rects[i].x;
+	pboxes[i].y1 = rects[i].y;
+	pboxes[i].x2 = rects[i].x + rects[i].width;
+	pboxes[i].y2 = rects[i].y + rects[i].height;
+    }
+
+    i = pixman_region32_init_rects (&region->rgn, pboxes, count);
+
+    if (pboxes != stack_pboxes)
+	free (pboxes);
+
+    if (unlikely (i == 0)) {
+	free (region);
+	return _cairo_region_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    return region;
+}
+slim_hidden_def (cairo_region_create_rectangles);
+
+cairo_region_t *
+_cairo_region_create_from_boxes (const cairo_box_t *boxes, int count)
+{
+    cairo_region_t *region;
+
+    region = _cairo_malloc (sizeof (cairo_region_t));
+    if (unlikely (region == NULL))
+	return _cairo_region_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    CAIRO_REFERENCE_COUNT_INIT (&region->ref_count, 1);
+    region->status = CAIRO_STATUS_SUCCESS;
+
+    if (! pixman_region32_init_rects (&region->rgn,
+				      (pixman_box32_t *)boxes, count)) {
+	free (region);
+	return _cairo_region_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    return region;
+}
+
+cairo_box_t *
+_cairo_region_get_boxes (const cairo_region_t *region, int *nbox)
+{
+    if (region->status) {
+	nbox = 0;
+	return NULL;
+    }
+
+    return (cairo_box_t *) pixman_region32_rectangles (CONST_CAST &region->rgn, nbox);
+}
+
+/**
+ * cairo_region_create_rectangle:
+ * @rectangle: a #cairo_rectangle_int_t
+ *
+ * Allocates a new region object containing @rectangle.
+ *
+ * Return value: A newly allocated #cairo_region_t. Free with
+ *   cairo_region_destroy(). This function always returns a
+ *   valid pointer; if memory cannot be allocated, then a special
+ *   error object is returned where all operations on the object do nothing.
+ *   You can check for this with cairo_region_status().
+ *
+ * Since: 1.10
+ **/
+cairo_region_t *
+cairo_region_create_rectangle (const cairo_rectangle_int_t *rectangle)
+{
+    cairo_region_t *region;
+
+    region = _cairo_malloc (sizeof (cairo_region_t));
+    if (unlikely (region == NULL))
+	return (cairo_region_t *) &_cairo_region_nil;
+
+    region->status = CAIRO_STATUS_SUCCESS;
+    CAIRO_REFERENCE_COUNT_INIT (&region->ref_count, 1);
+
+    pixman_region32_init_rect (&region->rgn,
+			       rectangle->x, rectangle->y,
+			       rectangle->width, rectangle->height);
+
+    return region;
+}
+slim_hidden_def (cairo_region_create_rectangle);
+
+/**
+ * cairo_region_copy:
+ * @original: a #cairo_region_t
+ *
+ * Allocates a new region object copying the area from @original.
+ *
+ * Return value: A newly allocated #cairo_region_t. Free with
+ *   cairo_region_destroy(). This function always returns a
+ *   valid pointer; if memory cannot be allocated, then a special
+ *   error object is returned where all operations on the object do nothing.
+ *   You can check for this with cairo_region_status().
+ *
+ * Since: 1.10
+ **/
+cairo_region_t *
+cairo_region_copy (const cairo_region_t *original)
+{
+    cairo_region_t *copy;
+
+    if (original != NULL && original->status)
+	return (cairo_region_t *) &_cairo_region_nil;
+
+    copy = cairo_region_create ();
+    if (unlikely (copy->status))
+	return copy;
+
+    if (original != NULL &&
+	! pixman_region32_copy (&copy->rgn, CONST_CAST &original->rgn))
+    {
+	cairo_region_destroy (copy);
+	return (cairo_region_t *) &_cairo_region_nil;
+    }
+
+    return copy;
+}
+slim_hidden_def (cairo_region_copy);
+
+/**
+ * cairo_region_reference:
+ * @region: a #cairo_region_t
+ *
+ * Increases the reference count on @region by one. This prevents
+ * @region from being destroyed until a matching call to
+ * cairo_region_destroy() is made.
+ *
+ * Return value: the referenced #cairo_region_t.
+ *
+ * Since: 1.10
+ **/
+cairo_region_t *
+cairo_region_reference (cairo_region_t *region)
+{
+    if (region == NULL || CAIRO_REFERENCE_COUNT_IS_INVALID (&region->ref_count))
+	return NULL;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&region->ref_count));
+
+    _cairo_reference_count_inc (&region->ref_count);
+    return region;
+}
+slim_hidden_def (cairo_region_reference);
+
+/**
+ * cairo_region_destroy:
+ * @region: a #cairo_region_t
+ *
+ * Destroys a #cairo_region_t object created with
+ * cairo_region_create(), cairo_region_copy(), or
+ * or cairo_region_create_rectangle().
+ *
+ * Since: 1.10
+ **/
+void
+cairo_region_destroy (cairo_region_t *region)
+{
+    if (region == NULL || CAIRO_REFERENCE_COUNT_IS_INVALID (&region->ref_count))
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&region->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&region->ref_count))
+	return;
+
+    _cairo_region_fini (region);
+    free (region);
+}
+slim_hidden_def (cairo_region_destroy);
+
+/**
+ * cairo_region_num_rectangles:
+ * @region: a #cairo_region_t
+ *
+ * Returns the number of rectangles contained in @region.
+ *
+ * Return value: The number of rectangles contained in @region.
+ *
+ * Since: 1.10
+ **/
+int
+cairo_region_num_rectangles (const cairo_region_t *region)
+{
+    if (region->status)
+	return 0;
+
+    return pixman_region32_n_rects (CONST_CAST &region->rgn);
+}
+slim_hidden_def (cairo_region_num_rectangles);
+
+/**
+ * cairo_region_get_rectangle:
+ * @region: a #cairo_region_t
+ * @nth: a number indicating which rectangle should be returned
+ * @rectangle: return location for a #cairo_rectangle_int_t
+ *
+ * Stores the @nth rectangle from the region in @rectangle.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_region_get_rectangle (const cairo_region_t *region,
+			    int nth,
+			    cairo_rectangle_int_t *rectangle)
+{
+    pixman_box32_t *pbox;
+
+    if (region->status) {
+	rectangle->x = rectangle->y = 0;
+	rectangle->width = rectangle->height = 0;
+	return;
+    }
+
+    pbox = pixman_region32_rectangles (CONST_CAST &region->rgn, NULL) + nth;
+
+    rectangle->x = pbox->x1;
+    rectangle->y = pbox->y1;
+    rectangle->width = pbox->x2 - pbox->x1;
+    rectangle->height = pbox->y2 - pbox->y1;
+}
+slim_hidden_def (cairo_region_get_rectangle);
+
+/**
+ * cairo_region_get_extents:
+ * @region: a #cairo_region_t
+ * @extents: rectangle into which to store the extents
+ *
+ * Gets the bounding rectangle of @region as a #cairo_rectangle_int_t
+ *
+ * Since: 1.10
+ **/
+void
+cairo_region_get_extents (const cairo_region_t *region,
+			  cairo_rectangle_int_t *extents)
+{
+    pixman_box32_t *pextents;
+
+    if (region->status) {
+	extents->x = extents->y = 0;
+	extents->width = extents->height = 0;
+	return;
+    }
+
+    pextents = pixman_region32_extents (CONST_CAST &region->rgn);
+
+    extents->x = pextents->x1;
+    extents->y = pextents->y1;
+    extents->width = pextents->x2 - pextents->x1;
+    extents->height = pextents->y2 - pextents->y1;
+}
+slim_hidden_def (cairo_region_get_extents);
+
+/**
+ * cairo_region_status:
+ * @region: a #cairo_region_t
+ *
+ * Checks whether an error has previous occurred for this
+ * region object.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_status (const cairo_region_t *region)
+{
+    return region->status;
+}
+slim_hidden_def (cairo_region_status);
+
+/**
+ * cairo_region_subtract:
+ * @dst: a #cairo_region_t
+ * @other: another #cairo_region_t
+ *
+ * Subtracts @other from @dst and places the result in @dst
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_subtract (cairo_region_t *dst, const cairo_region_t *other)
+{
+    if (dst->status)
+	return dst->status;
+
+    if (other->status)
+	return _cairo_region_set_error (dst, other->status);
+
+    if (! pixman_region32_subtract (&dst->rgn,
+				    &dst->rgn,
+				    CONST_CAST &other->rgn))
+    {
+	return _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_region_subtract);
+
+/**
+ * cairo_region_subtract_rectangle:
+ * @dst: a #cairo_region_t
+ * @rectangle: a #cairo_rectangle_int_t
+ *
+ * Subtracts @rectangle from @dst and places the result in @dst
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_subtract_rectangle (cairo_region_t *dst,
+				 const cairo_rectangle_int_t *rectangle)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    pixman_region32_t region;
+
+    if (dst->status)
+	return dst->status;
+
+    pixman_region32_init_rect (&region,
+			       rectangle->x, rectangle->y,
+			       rectangle->width, rectangle->height);
+
+    if (! pixman_region32_subtract (&dst->rgn, &dst->rgn, &region))
+	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    pixman_region32_fini (&region);
+
+    return status;
+}
+slim_hidden_def (cairo_region_subtract_rectangle);
+
+/**
+ * cairo_region_intersect:
+ * @dst: a #cairo_region_t
+ * @other: another #cairo_region_t
+ *
+ * Computes the intersection of @dst with @other and places the result in @dst
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_intersect (cairo_region_t *dst, const cairo_region_t *other)
+{
+    if (dst->status)
+	return dst->status;
+
+    if (other->status)
+	return _cairo_region_set_error (dst, other->status);
+
+    if (! pixman_region32_intersect (&dst->rgn, &dst->rgn, CONST_CAST &other->rgn))
+	return _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_region_intersect);
+
+/**
+ * cairo_region_intersect_rectangle:
+ * @dst: a #cairo_region_t
+ * @rectangle: a #cairo_rectangle_int_t
+ *
+ * Computes the intersection of @dst with @rectangle and places the
+ * result in @dst
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_intersect_rectangle (cairo_region_t *dst,
+				  const cairo_rectangle_int_t *rectangle)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    pixman_region32_t region;
+
+    if (dst->status)
+	return dst->status;
+
+    pixman_region32_init_rect (&region,
+			       rectangle->x, rectangle->y,
+			       rectangle->width, rectangle->height);
+
+    if (! pixman_region32_intersect (&dst->rgn, &dst->rgn, &region))
+	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    pixman_region32_fini (&region);
+
+    return status;
+}
+slim_hidden_def (cairo_region_intersect_rectangle);
+
+/**
+ * cairo_region_union:
+ * @dst: a #cairo_region_t
+ * @other: another #cairo_region_t
+ *
+ * Computes the union of @dst with @other and places the result in @dst
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_union (cairo_region_t *dst,
+		    const cairo_region_t *other)
+{
+    if (dst->status)
+	return dst->status;
+
+    if (other->status)
+	return _cairo_region_set_error (dst, other->status);
+
+    if (! pixman_region32_union (&dst->rgn, &dst->rgn, CONST_CAST &other->rgn))
+	return _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_region_union);
+
+/**
+ * cairo_region_union_rectangle:
+ * @dst: a #cairo_region_t
+ * @rectangle: a #cairo_rectangle_int_t
+ *
+ * Computes the union of @dst with @rectangle and places the result in @dst.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_union_rectangle (cairo_region_t *dst,
+			      const cairo_rectangle_int_t *rectangle)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    pixman_region32_t region;
+
+    if (dst->status)
+	return dst->status;
+
+    pixman_region32_init_rect (&region,
+			       rectangle->x, rectangle->y,
+			       rectangle->width, rectangle->height);
+
+    if (! pixman_region32_union (&dst->rgn, &dst->rgn, &region))
+	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    pixman_region32_fini (&region);
+
+    return status;
+}
+slim_hidden_def (cairo_region_union_rectangle);
+
+/**
+ * cairo_region_xor:
+ * @dst: a #cairo_region_t
+ * @other: another #cairo_region_t
+ *
+ * Computes the exclusive difference of @dst with @other and places the
+ * result in @dst. That is, @dst will be set to contain all areas that
+ * are either in @dst or in @other, but not in both.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_xor (cairo_region_t *dst, const cairo_region_t *other)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    pixman_region32_t tmp;
+
+    if (dst->status)
+	return dst->status;
+
+    if (other->status)
+	return _cairo_region_set_error (dst, other->status);
+
+    pixman_region32_init (&tmp);
+
+    /* XXX: get an xor function into pixman */
+    if (! pixman_region32_subtract (&tmp, CONST_CAST &other->rgn, &dst->rgn) ||
+        ! pixman_region32_subtract (&dst->rgn, &dst->rgn, CONST_CAST &other->rgn) || 
+        ! pixman_region32_union (&dst->rgn, &dst->rgn, &tmp))
+	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    pixman_region32_fini (&tmp);
+
+    return status;
+}
+slim_hidden_def (cairo_region_xor);
+
+/**
+ * cairo_region_xor_rectangle:
+ * @dst: a #cairo_region_t
+ * @rectangle: a #cairo_rectangle_int_t
+ *
+ * Computes the exclusive difference of @dst with @rectangle and places the
+ * result in @dst. That is, @dst will be set to contain all areas that are 
+ * either in @dst or in @rectangle, but not in both.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_region_xor_rectangle (cairo_region_t *dst,
+			    const cairo_rectangle_int_t *rectangle)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    pixman_region32_t region, tmp;
+
+    if (dst->status)
+	return dst->status;
+
+    pixman_region32_init_rect (&region,
+			       rectangle->x, rectangle->y,
+			       rectangle->width, rectangle->height);
+    pixman_region32_init (&tmp);
+
+    /* XXX: get an xor function into pixman */
+    if (! pixman_region32_subtract (&tmp, &region, &dst->rgn) ||
+        ! pixman_region32_subtract (&dst->rgn, &dst->rgn, &region) || 
+        ! pixman_region32_union (&dst->rgn, &dst->rgn, &tmp))
+	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);
+
+    pixman_region32_fini (&tmp);
+    pixman_region32_fini (&region);
+
+    return status;
+}
+slim_hidden_def (cairo_region_xor_rectangle);
+
+/**
+ * cairo_region_is_empty:
+ * @region: a #cairo_region_t
+ *
+ * Checks whether @region is empty.
+ *
+ * Return value: %TRUE if @region is empty, %FALSE if it isn't.
+ *
+ * Since: 1.10
+ **/
+cairo_bool_t
+cairo_region_is_empty (const cairo_region_t *region)
+{
+    if (region->status)
+	return TRUE;
+
+    return ! pixman_region32_not_empty (CONST_CAST &region->rgn);
+}
+slim_hidden_def (cairo_region_is_empty);
+
+/**
+ * cairo_region_translate:
+ * @region: a #cairo_region_t
+ * @dx: Amount to translate in the x direction
+ * @dy: Amount to translate in the y direction
+ *
+ * Translates @region by (@dx, @dy).
+ *
+ * Since: 1.10
+ **/
+void
+cairo_region_translate (cairo_region_t *region,
+			int dx, int dy)
+{
+    if (region->status)
+	return;
+
+    pixman_region32_translate (&region->rgn, dx, dy);
+}
+slim_hidden_def (cairo_region_translate);
+
+/**
+ * cairo_region_contains_rectangle:
+ * @region: a #cairo_region_t
+ * @rectangle: a #cairo_rectangle_int_t
+ *
+ * Checks whether @rectangle is inside, outside or partially contained
+ * in @region
+ *
+ * Return value:
+ *   %CAIRO_REGION_OVERLAP_IN if @rectangle is entirely inside @region,
+ *   %CAIRO_REGION_OVERLAP_OUT if @rectangle is entirely outside @region, or
+ *   %CAIRO_REGION_OVERLAP_PART if @rectangle is partially inside and partially outside @region.
+ *
+ * Since: 1.10
+ **/
+cairo_region_overlap_t
+cairo_region_contains_rectangle (const cairo_region_t *region,
+				 const cairo_rectangle_int_t *rectangle)
+{
+    pixman_box32_t pbox;
+    pixman_region_overlap_t poverlap;
+
+    if (region->status)
+	return CAIRO_REGION_OVERLAP_OUT;
+
+    pbox.x1 = rectangle->x;
+    pbox.y1 = rectangle->y;
+    pbox.x2 = rectangle->x + rectangle->width;
+    pbox.y2 = rectangle->y + rectangle->height;
+
+    poverlap = pixman_region32_contains_rectangle (CONST_CAST &region->rgn,
+						   &pbox);
+    switch (poverlap) {
+    default:
+    case PIXMAN_REGION_OUT:  return CAIRO_REGION_OVERLAP_OUT;
+    case PIXMAN_REGION_IN:   return CAIRO_REGION_OVERLAP_IN;
+    case PIXMAN_REGION_PART: return CAIRO_REGION_OVERLAP_PART;
+    }
+}
+slim_hidden_def (cairo_region_contains_rectangle);
+
+/**
+ * cairo_region_contains_point:
+ * @region: a #cairo_region_t
+ * @x: the x coordinate of a point
+ * @y: the y coordinate of a point
+ *
+ * Checks whether (@x, @y) is contained in @region.
+ *
+ * Return value: %TRUE if (@x, @y) is contained in @region, %FALSE if it is not.
+ *
+ * Since: 1.10
+ **/
+cairo_bool_t
+cairo_region_contains_point (const cairo_region_t *region,
+			     int x, int y)
+{
+    pixman_box32_t box;
+
+    if (region->status)
+	return FALSE;
+
+    return pixman_region32_contains_point (CONST_CAST &region->rgn, x, y, &box);
+}
+slim_hidden_def (cairo_region_contains_point);
+
+/**
+ * cairo_region_equal:
+ * @a: a #cairo_region_t or %NULL
+ * @b: a #cairo_region_t or %NULL
+ *
+ * Compares whether region_a is equivalent to region_b. %NULL as an argument
+ * is equal to itself, but not to any non-%NULL region.
+ *
+ * Return value: %TRUE if both regions contained the same coverage,
+ * %FALSE if it is not or any region is in an error status.
+ *
+ * Since: 1.10
+ **/
+cairo_bool_t
+cairo_region_equal (const cairo_region_t *a,
+		    const cairo_region_t *b)
+{
+    /* error objects are never equal */
+    if ((a != NULL && a->status) || (b != NULL && b->status))
+	return FALSE;
+
+    if (a == b)
+	return TRUE;
+
+    if (a == NULL || b == NULL)
+	return FALSE;
+
+    return pixman_region32_equal (CONST_CAST &a->rgn, CONST_CAST &b->rgn);
+}
+slim_hidden_def (cairo_region_equal);
diff --git a/libs/cairo-1.16.0/src/cairo-rtree-private.h b/libs/cairo-1.16.0/src/cairo-rtree-private.h
new file mode 100644
index 0000000..27806ca
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-rtree-private.h
@@ -0,0 +1,142 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#ifndef CAIRO_RTREE_PRIVATE_H
+#define CAIRO_RTREE_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-types-private.h"
+
+#include "cairo-freelist-private.h"
+#include "cairo-list-inline.h"
+
+enum {
+    CAIRO_RTREE_NODE_AVAILABLE,
+    CAIRO_RTREE_NODE_DIVIDED,
+    CAIRO_RTREE_NODE_OCCUPIED,
+};
+
+typedef struct _cairo_rtree_node {
+    struct _cairo_rtree_node *children[4], *parent;
+    cairo_list_t link;
+    uint16_t pinned;
+    uint16_t state;
+    uint16_t x, y;
+    uint16_t width, height;
+} cairo_rtree_node_t;
+
+typedef struct _cairo_rtree {
+    cairo_rtree_node_t root;
+    int min_size;
+    cairo_list_t pinned;
+    cairo_list_t available;
+    cairo_list_t evictable;
+    void (*destroy) (cairo_rtree_node_t *);
+    cairo_freepool_t node_freepool;
+} cairo_rtree_t;
+
+cairo_private cairo_rtree_node_t *
+_cairo_rtree_node_create (cairo_rtree_t		 *rtree,
+		          cairo_rtree_node_t	 *parent,
+			  int			  x,
+			  int			  y,
+			  int			  width,
+			  int			  height);
+
+cairo_private cairo_status_t
+_cairo_rtree_node_insert (cairo_rtree_t *rtree,
+	                  cairo_rtree_node_t *node,
+			  int width,
+			  int height,
+			  cairo_rtree_node_t **out);
+
+cairo_private void
+_cairo_rtree_node_collapse (cairo_rtree_t *rtree, cairo_rtree_node_t *node);
+
+cairo_private void
+_cairo_rtree_node_remove (cairo_rtree_t *rtree, cairo_rtree_node_t *node);
+
+cairo_private void
+_cairo_rtree_node_destroy (cairo_rtree_t *rtree, cairo_rtree_node_t *node);
+
+cairo_private void
+_cairo_rtree_init (cairo_rtree_t	*rtree,
+	           int			 width,
+		   int			 height,
+		   int			 min_size,
+		   int			 node_size,
+		   void (*destroy)(cairo_rtree_node_t *));
+
+cairo_private cairo_int_status_t
+_cairo_rtree_insert (cairo_rtree_t	     *rtree,
+		     int		      width,
+	             int		      height,
+	             cairo_rtree_node_t	    **out);
+
+cairo_private cairo_int_status_t
+_cairo_rtree_evict_random (cairo_rtree_t	 *rtree,
+		           int			  width,
+		           int			  height,
+		           cairo_rtree_node_t	**out);
+
+cairo_private void
+_cairo_rtree_foreach (cairo_rtree_t *rtree,
+		      void (*func)(cairo_rtree_node_t *, void *data),
+		      void *data);
+
+static inline void *
+_cairo_rtree_pin (cairo_rtree_t *rtree, cairo_rtree_node_t *node)
+{
+    assert (node->state == CAIRO_RTREE_NODE_OCCUPIED);
+    if (! node->pinned) {
+	cairo_list_move (&node->link, &rtree->pinned);
+	node->pinned = 1;
+    }
+
+    return node;
+}
+
+cairo_private void
+_cairo_rtree_unpin (cairo_rtree_t *rtree);
+
+cairo_private void
+_cairo_rtree_reset (cairo_rtree_t *rtree);
+
+cairo_private void
+_cairo_rtree_fini (cairo_rtree_t *rtree);
+
+#endif /* CAIRO_RTREE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-rtree.c b/libs/cairo-1.16.0/src/cairo-rtree.c
new file mode 100644
index 0000000..dbc0409
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-rtree.c
@@ -0,0 +1,388 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-rtree-private.h"
+
+cairo_rtree_node_t *
+_cairo_rtree_node_create (cairo_rtree_t		 *rtree,
+		          cairo_rtree_node_t	 *parent,
+			  int			  x,
+			  int			  y,
+			  int			  width,
+			  int			  height)
+{
+    cairo_rtree_node_t *node;
+
+    node = _cairo_freepool_alloc (&rtree->node_freepool);
+    if (node == NULL) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    node->children[0] = NULL;
+    node->parent = parent;
+    node->state  = CAIRO_RTREE_NODE_AVAILABLE;
+    node->pinned = FALSE;
+    node->x	 = x;
+    node->y	 = y;
+    node->width  = width;
+    node->height = height;
+
+    cairo_list_add (&node->link, &rtree->available);
+
+    return node;
+}
+
+void
+_cairo_rtree_node_destroy (cairo_rtree_t *rtree, cairo_rtree_node_t *node)
+{
+    int i;
+
+    cairo_list_del (&node->link);
+
+    if (node->state == CAIRO_RTREE_NODE_OCCUPIED) {
+	rtree->destroy (node);
+    } else {
+	for (i = 0; i < 4 && node->children[i] != NULL; i++)
+	    _cairo_rtree_node_destroy (rtree, node->children[i]);
+    }
+
+    _cairo_freepool_free (&rtree->node_freepool, node);
+}
+
+void
+_cairo_rtree_node_collapse (cairo_rtree_t *rtree, cairo_rtree_node_t *node)
+{
+    int i;
+
+    do {
+	assert (node->state == CAIRO_RTREE_NODE_DIVIDED);
+
+	for (i = 0;  i < 4 && node->children[i] != NULL; i++)
+	    if (node->children[i]->state != CAIRO_RTREE_NODE_AVAILABLE)
+		return;
+
+	for (i = 0; i < 4 && node->children[i] != NULL; i++)
+	    _cairo_rtree_node_destroy (rtree, node->children[i]);
+
+	node->children[0] = NULL;
+	node->state = CAIRO_RTREE_NODE_AVAILABLE;
+	cairo_list_move (&node->link, &rtree->available);
+    } while ((node = node->parent) != NULL);
+}
+
+cairo_status_t
+_cairo_rtree_node_insert (cairo_rtree_t *rtree,
+	                  cairo_rtree_node_t *node,
+			  int width,
+			  int height,
+			  cairo_rtree_node_t **out)
+{
+    int w, h, i;
+
+    assert (node->state == CAIRO_RTREE_NODE_AVAILABLE);
+    assert (node->pinned == FALSE);
+
+    if (node->width  - width  > rtree->min_size ||
+	node->height - height > rtree->min_size)
+    {
+	w = node->width  - width;
+	h = node->height - height;
+
+	i = 0;
+	node->children[i] = _cairo_rtree_node_create (rtree, node,
+						      node->x, node->y,
+						      width, height);
+	if (unlikely (node->children[i] == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	i++;
+
+	if (w > rtree->min_size) {
+	    node->children[i] = _cairo_rtree_node_create (rtree, node,
+							  node->x + width,
+							  node->y,
+							  w, height);
+	    if (unlikely (node->children[i] == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    i++;
+	}
+
+	if (h > rtree->min_size) {
+	    node->children[i] = _cairo_rtree_node_create (rtree, node,
+							  node->x,
+							  node->y + height,
+							  width, h);
+	    if (unlikely (node->children[i] == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    i++;
+
+	    if (w > rtree->min_size) {
+		node->children[i] = _cairo_rtree_node_create (rtree, node,
+							      node->x + width,
+							      node->y + height,
+							      w, h);
+		if (unlikely (node->children[i] == NULL))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		i++;
+	    }
+	}
+
+	if (i < 4)
+	    node->children[i] = NULL;
+
+	node->state = CAIRO_RTREE_NODE_DIVIDED;
+	cairo_list_move (&node->link, &rtree->evictable);
+	node = node->children[0];
+    }
+
+    node->state = CAIRO_RTREE_NODE_OCCUPIED;
+    cairo_list_move (&node->link, &rtree->evictable);
+    *out = node;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_rtree_node_remove (cairo_rtree_t *rtree, cairo_rtree_node_t *node)
+{
+    assert (node->state == CAIRO_RTREE_NODE_OCCUPIED);
+    assert (node->pinned == FALSE);
+
+    rtree->destroy (node);
+
+    node->state = CAIRO_RTREE_NODE_AVAILABLE;
+    cairo_list_move (&node->link, &rtree->available);
+
+    _cairo_rtree_node_collapse (rtree, node->parent);
+}
+
+cairo_int_status_t
+_cairo_rtree_insert (cairo_rtree_t	     *rtree,
+		     int		      width,
+	             int		      height,
+	             cairo_rtree_node_t	    **out)
+{
+    cairo_rtree_node_t *node;
+
+    cairo_list_foreach_entry (node, cairo_rtree_node_t,
+			      &rtree->available, link)
+    {
+	if (node->width >= width && node->height >= height)
+	    return _cairo_rtree_node_insert (rtree, node, width, height, out);
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static uint32_t
+hars_petruska_f54_1_random (void)
+{
+#define rol(x,k) ((x << k) | (x >> (32-k)))
+    static uint32_t x;
+    return x = (x ^ rol (x, 5) ^ rol (x, 24)) + 0x37798849;
+#undef rol
+}
+
+cairo_int_status_t
+_cairo_rtree_evict_random (cairo_rtree_t	 *rtree,
+		           int			  width,
+		           int			  height,
+		           cairo_rtree_node_t		**out)
+{
+    cairo_int_status_t ret = CAIRO_INT_STATUS_UNSUPPORTED;
+    cairo_rtree_node_t *node, *next;
+    cairo_list_t tmp_pinned;
+    int i, cnt;
+
+    cairo_list_init (&tmp_pinned);
+
+    /* propagate pinned from children to root */
+    cairo_list_foreach_entry_safe (node, next,
+				   cairo_rtree_node_t, &rtree->pinned, link) {
+	node = node->parent;
+	while (node && ! node->pinned) {
+	    node->pinned = 1;
+	    cairo_list_move (&node->link, &tmp_pinned);
+	    node = node->parent;
+	}
+    }
+
+    cnt = 0;
+    cairo_list_foreach_entry (node, cairo_rtree_node_t,
+			      &rtree->evictable, link)
+    {
+	if (node->width >= width && node->height >= height)
+	    cnt++;
+    }
+
+    if (cnt == 0)
+	goto out;
+
+    cnt = hars_petruska_f54_1_random () % cnt;
+    cairo_list_foreach_entry (node, cairo_rtree_node_t,
+			      &rtree->evictable, link)
+    {
+	if (node->width >= width && node->height >= height && cnt-- == 0) {
+	    if (node->state == CAIRO_RTREE_NODE_OCCUPIED) {
+		rtree->destroy (node);
+	    } else {
+		for (i = 0; i < 4 && node->children[i] != NULL; i++)
+		    _cairo_rtree_node_destroy (rtree, node->children[i]);
+		node->children[0] = NULL;
+	    }
+
+	    node->state = CAIRO_RTREE_NODE_AVAILABLE;
+	    cairo_list_move (&node->link, &rtree->available);
+
+	    *out = node;
+	    ret = CAIRO_STATUS_SUCCESS;
+	    break;
+	}
+    }
+
+out:
+    while (! cairo_list_is_empty (&tmp_pinned)) {
+	node = cairo_list_first_entry (&tmp_pinned, cairo_rtree_node_t, link);
+	node->pinned = 0;
+	cairo_list_move (&node->link, &rtree->evictable);
+    }
+    return ret;
+}
+
+void
+_cairo_rtree_unpin (cairo_rtree_t *rtree)
+{
+    while (! cairo_list_is_empty (&rtree->pinned)) {
+	cairo_rtree_node_t *node = cairo_list_first_entry (&rtree->pinned,
+							   cairo_rtree_node_t,
+							   link);
+	node->pinned = 0;
+	cairo_list_move (&node->link, &rtree->evictable);
+    }
+}
+
+void
+_cairo_rtree_init (cairo_rtree_t	*rtree,
+	           int			 width,
+		   int			 height,
+		   int			 min_size,
+		   int			 node_size,
+		   void (*destroy) (cairo_rtree_node_t *))
+{
+    assert (node_size >= (int) sizeof (cairo_rtree_node_t));
+    _cairo_freepool_init (&rtree->node_freepool, node_size);
+
+    cairo_list_init (&rtree->available);
+    cairo_list_init (&rtree->pinned);
+    cairo_list_init (&rtree->evictable);
+
+    rtree->min_size = min_size;
+    rtree->destroy = destroy;
+
+    memset (&rtree->root, 0, sizeof (rtree->root));
+    rtree->root.width = width;
+    rtree->root.height = height;
+    rtree->root.state = CAIRO_RTREE_NODE_AVAILABLE;
+    cairo_list_add (&rtree->root.link, &rtree->available);
+}
+
+void
+_cairo_rtree_reset (cairo_rtree_t *rtree)
+{
+    int i;
+
+    if (rtree->root.state == CAIRO_RTREE_NODE_OCCUPIED) {
+	rtree->destroy (&rtree->root);
+    } else {
+	for (i = 0; i < 4 && rtree->root.children[i] != NULL; i++)
+	    _cairo_rtree_node_destroy (rtree, rtree->root.children[i]);
+	rtree->root.children[0] = NULL;
+    }
+
+    cairo_list_init (&rtree->available);
+    cairo_list_init (&rtree->evictable);
+    cairo_list_init (&rtree->pinned);
+
+    rtree->root.state = CAIRO_RTREE_NODE_AVAILABLE;
+    rtree->root.pinned = FALSE;
+    cairo_list_add (&rtree->root.link, &rtree->available);
+}
+
+static void
+_cairo_rtree_node_foreach (cairo_rtree_node_t *node,
+			   void (*func)(cairo_rtree_node_t *, void *data),
+			   void *data)
+{
+    int i;
+
+    for (i = 0; i < 4 && node->children[i] != NULL; i++)
+	_cairo_rtree_node_foreach(node->children[i], func, data);
+
+    func(node, data);
+}
+
+void
+_cairo_rtree_foreach (cairo_rtree_t *rtree,
+		      void (*func)(cairo_rtree_node_t *, void *data),
+		      void *data)
+{
+    int i;
+
+    if (rtree->root.state == CAIRO_RTREE_NODE_OCCUPIED) {
+	func(&rtree->root, data);
+    } else {
+	for (i = 0; i < 4 && rtree->root.children[i] != NULL; i++)
+	    _cairo_rtree_node_foreach (rtree->root.children[i], func, data);
+    }
+}
+
+void
+_cairo_rtree_fini (cairo_rtree_t *rtree)
+{
+    int i;
+
+    if (rtree->root.state == CAIRO_RTREE_NODE_OCCUPIED) {
+	rtree->destroy (&rtree->root);
+    } else {
+	for (i = 0; i < 4 && rtree->root.children[i] != NULL; i++)
+	    _cairo_rtree_node_destroy (rtree, rtree->root.children[i]);
+    }
+
+    _cairo_freepool_fini (&rtree->node_freepool);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-scaled-font-private.h b/libs/cairo-1.16.0/src/cairo-scaled-font-private.h
new file mode 100644
index 0000000..317d211
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-scaled-font-private.h
@@ -0,0 +1,186 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_SCALED_FONT_PRIVATE_H
+#define CAIRO_SCALED_FONT_PRIVATE_H
+
+#include "cairo.h"
+
+#include "cairo-types-private.h"
+#include "cairo-list-private.h"
+#include "cairo-mutex-type-private.h"
+#include "cairo-reference-count-private.h"
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_scaled_glyph_page cairo_scaled_glyph_page_t;
+
+struct _cairo_scaled_font {
+    /* For most cairo objects, the rule for multiple threads is that
+     * the user is responsible for any locking if the same object is
+     * manipulated from multiple threads simultaneously.
+     *
+     * However, with the caching that cairo does for scaled fonts, a
+     * user can easily end up with the same cairo_scaled_font object
+     * being manipulated from multiple threads without the user ever
+     * being aware of this, (and in fact, unable to control it).
+     *
+     * So, as a special exception, the cairo implementation takes care
+     * of all locking needed for cairo_scaled_font_t. Most of what is
+     * in the scaled font is immutable, (which is what allows for the
+     * sharing in the first place). The things that are modified and
+     * the locks protecting them are as follows:
+     *
+     * 1. The reference count (scaled_font->ref_count)
+     *
+     *    Modifications to the reference count are protected by the
+     *    _cairo_scaled_font_map_mutex. This is because the reference
+     *    count of a scaled font is intimately related with the font
+     *    map itself, (and the magic holdovers array).
+     *
+     * 2. The cache of glyphs (scaled_font->glyphs)
+     * 3. The backend private data (scaled_font->surface_backend,
+     *				    scaled_font->surface_private)
+     *
+     *    Modifications to these fields are protected with locks on
+     *    scaled_font->mutex in the generic scaled_font code.
+     */
+
+    cairo_hash_entry_t hash_entry;
+
+    /* useful bits for _cairo_scaled_font_nil */
+    cairo_status_t status;
+    cairo_reference_count_t ref_count;
+    cairo_user_data_array_t user_data;
+
+    cairo_font_face_t *original_font_face; /* may be NULL */
+
+    /* hash key members */
+    cairo_font_face_t *font_face; /* may be NULL */
+    cairo_matrix_t font_matrix;	  /* font space => user space */
+    cairo_matrix_t ctm;	          /* user space => device space */
+    cairo_font_options_t options;
+
+    unsigned int placeholder : 1; /*  protected by fontmap mutex */
+    unsigned int holdover : 1;
+    unsigned int finished : 1;
+
+    /* "live" scaled_font members */
+    cairo_matrix_t scale;	     /* font space => device space */
+    cairo_matrix_t scale_inverse;    /* device space => font space */
+    double max_scale;		     /* maximum x/y expansion of scale */
+    cairo_font_extents_t extents;    /* user space */
+    cairo_font_extents_t fs_extents; /* font space */
+
+    /* The mutex protects modification to all subsequent fields. */
+    cairo_mutex_t mutex;
+
+    cairo_hash_table_t *glyphs;
+    cairo_list_t glyph_pages;
+    cairo_bool_t cache_frozen;
+    cairo_bool_t global_cache_frozen;
+
+    cairo_list_t dev_privates;
+
+    /* font backend managing this scaled font */
+    const cairo_scaled_font_backend_t *backend;
+    cairo_list_t link;
+};
+
+struct _cairo_scaled_font_private {
+    cairo_list_t link;
+    const void *key;
+    void (*destroy) (cairo_scaled_font_private_t *,
+		     cairo_scaled_font_t *);
+};
+
+struct _cairo_scaled_glyph {
+    cairo_hash_entry_t hash_entry;
+
+    cairo_text_extents_t    metrics;		/* user-space metrics */
+    cairo_text_extents_t    fs_metrics;		/* font-space metrics */
+    cairo_box_t		    bbox;		/* device-space bounds */
+    int16_t                 x_advance;		/* device-space rounded X advance */
+    int16_t                 y_advance;		/* device-space rounded Y advance */
+
+    unsigned int	    has_info;
+    cairo_image_surface_t   *surface;		/* device-space image */
+    cairo_path_fixed_t	    *path;		/* device-space outline */
+    cairo_surface_t         *recording_surface;	/* device-space recording-surface */
+    cairo_image_surface_t   *color_surface;	/* device-space color image */
+
+    const void		   *dev_private_key;
+    void		   *dev_private;
+    cairo_list_t            dev_privates;
+};
+
+struct _cairo_scaled_glyph_private {
+    cairo_list_t link;
+    const void *key;
+    void (*destroy) (cairo_scaled_glyph_private_t *,
+		     cairo_scaled_glyph_t *,
+		     cairo_scaled_font_t *);
+};
+
+cairo_private cairo_scaled_font_private_t *
+_cairo_scaled_font_find_private (cairo_scaled_font_t *scaled_font,
+				 const void *key);
+
+cairo_private void
+_cairo_scaled_font_attach_private (cairo_scaled_font_t *scaled_font,
+				   cairo_scaled_font_private_t *priv,
+				   const void *key,
+				   void (*destroy) (cairo_scaled_font_private_t *,
+						    cairo_scaled_font_t *));
+
+cairo_private cairo_scaled_glyph_private_t *
+_cairo_scaled_glyph_find_private (cairo_scaled_glyph_t *scaled_glyph,
+				 const void *key);
+
+cairo_private void
+_cairo_scaled_glyph_attach_private (cairo_scaled_glyph_t *scaled_glyph,
+				   cairo_scaled_glyph_private_t *priv,
+				   const void *key,
+				   void (*destroy) (cairo_scaled_glyph_private_t *,
+						    cairo_scaled_glyph_t *,
+						    cairo_scaled_font_t *));
+cairo_private cairo_bool_t
+_cairo_scaled_font_has_color_glyphs (cairo_scaled_font_t *scaled_font);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SCALED_FONT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-scaled-font-subsets-private.h b/libs/cairo-1.16.0/src/cairo-scaled-font-subsets-private.h
new file mode 100644
index 0000000..e7809f0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-scaled-font-subsets-private.h
@@ -0,0 +1,740 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_SCALED_FONT_SUBSETS_PRIVATE_H
+#define CAIRO_SCALED_FONT_SUBSETS_PRIVATE_H
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+typedef struct _cairo_scaled_font_subsets_glyph {
+    unsigned int font_id;
+    unsigned int subset_id;
+    unsigned int subset_glyph_index;
+    cairo_bool_t is_scaled;
+    cairo_bool_t is_composite;
+    cairo_bool_t is_latin;
+    double       x_advance;
+    double       y_advance;
+    cairo_bool_t utf8_is_mapped;
+    uint32_t 	 unicode;
+} cairo_scaled_font_subsets_glyph_t;
+
+/**
+ * _cairo_scaled_font_subsets_create_scaled:
+ *
+ * Create a new #cairo_scaled_font_subsets_t object which can be used
+ * to create subsets of any number of #cairo_scaled_font_t
+ * objects. This allows the (arbitrarily large and sparse) glyph
+ * indices of a #cairo_scaled_font_t to be mapped to one or more font
+ * subsets with glyph indices packed into the range
+ * [0 .. max_glyphs_per_subset).
+ *
+ * Return value: a pointer to the newly creates font subsets. The
+ * caller owns this object and should call
+ * _cairo_scaled_font_subsets_destroy() when done with it.
+ **/
+cairo_private cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_scaled (void);
+
+/**
+ * _cairo_scaled_font_subsets_create_simple:
+ *
+ * Create a new #cairo_scaled_font_subsets_t object which can be used
+ * to create font subsets suitable for embedding as Postscript or PDF
+ * simple fonts.
+ *
+ * Glyphs with an outline path available will be mapped to one font
+ * subset for each font face. Glyphs from bitmap fonts will mapped to
+ * separate font subsets for each #cairo_scaled_font_t object.
+ *
+ * The maximum number of glyphs per subset is 256. Each subset
+ * reserves the first glyph for the .notdef glyph.
+ *
+ * Return value: a pointer to the newly creates font subsets. The
+ * caller owns this object and should call
+ * _cairo_scaled_font_subsets_destroy() when done with it.
+ **/
+cairo_private cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_simple (void);
+
+/**
+ * _cairo_scaled_font_subsets_create_composite:
+ *
+ * Create a new #cairo_scaled_font_subsets_t object which can be used
+ * to create font subsets suitable for embedding as Postscript or PDF
+ * composite fonts.
+ *
+ * Glyphs with an outline path available will be mapped to one font
+ * subset for each font face. Each unscaled subset has a maximum of
+ * 65536 glyphs except for Type1 fonts which have a maximum of 256 glyphs.
+ *
+ * Glyphs from bitmap fonts will mapped to separate font subsets for
+ * each #cairo_scaled_font_t object. Each unscaled subset has a maximum
+ * of 256 glyphs.
+ *
+ * Each subset reserves the first glyph for the .notdef glyph.
+ *
+ * Return value: a pointer to the newly creates font subsets. The
+ * caller owns this object and should call
+ * _cairo_scaled_font_subsets_destroy() when done with it.
+ **/
+cairo_private cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_composite (void);
+
+/**
+ * _cairo_scaled_font_subsets_destroy:
+ * @font_subsets: a #cairo_scaled_font_subsets_t object to be destroyed
+ *
+ * Destroys @font_subsets and all resources associated with it.
+ **/
+cairo_private void
+_cairo_scaled_font_subsets_destroy (cairo_scaled_font_subsets_t *font_subsets);
+
+/**
+ * _cairo_scaled_font_subsets_enable_latin_subset:
+ * @font_subsets: a #cairo_scaled_font_subsets_t object to be destroyed
+ * @use_latin: a #cairo_bool_t indicating if a latin subset is to be used
+ *
+ * If enabled, all CP1252 characters will be placed in a separate
+ * 8-bit latin subset.
+ **/
+cairo_private void
+_cairo_scaled_font_subsets_enable_latin_subset (cairo_scaled_font_subsets_t *font_subsets,
+						cairo_bool_t                 use_latin);
+
+/**
+ * _cairo_scaled_font_subsets_map_glyph:
+ * @font_subsets: a #cairo_scaled_font_subsets_t
+ * @scaled_font: the font of the glyph to be mapped
+ * @scaled_font_glyph_index: the index of the glyph to be mapped
+ * @utf8: a string of text encoded in UTF-8
+ * @utf8_len: length of @utf8 in bytes
+ * @subset_glyph_ret: return structure containing subset font and glyph id
+ *
+ * Map a glyph from a #cairo_scaled_font to a new index within a
+ * subset of that font. The mapping performed is from the tuple:
+ *
+ *	(scaled_font, scaled_font_glyph_index)
+ *
+ * to the tuple:
+ *
+ *	(font_id, subset_id, subset_glyph_index)
+ *
+ * This mapping is 1:1. If the input tuple has previously mapped, the
+ * the output tuple previously returned will be returned again.
+ *
+ * Otherwise, the return tuple will be constructed as follows:
+ *
+ * 1) There is a 1:1 correspondence between the input scaled_font
+ *    value and the output font_id value. If no mapping has been
+ *    previously performed with the scaled_font value then the
+ *    smallest unused font_id value will be returned.
+ *
+ * 2) Within the set of output tuples of the same font_id value the
+ *    smallest value of subset_id will be returned such that
+ *    subset_glyph_index does not exceed max_glyphs_per_subset (as
+ *    passed to _cairo_scaled_font_subsets_create()) and that the
+ *    resulting tuple is unique.
+ *
+ * 3) The smallest value of subset_glyph_index is returned such that
+ *    the resulting tuple is unique.
+ *
+ * The net result is that any #cairo_scaled_font_t will be represented
+ * by one or more font subsets. Each subset is effectively a tuple of
+ * (scaled_font, font_id, subset_id) and within each subset there
+ * exists a mapping of scaled_glyph_font_index to subset_glyph_index.
+ *
+ * This final description of a font subset is the same representation
+ * used by #cairo_scaled_font_subset_t as provided by
+ * _cairo_scaled_font_subsets_foreach.
+ *
+ * @utf8 and @utf8_len specify a string of unicode characters that the
+ * glyph @scaled_font_glyph_index maps to. If @utf8_is_mapped in
+ * @subset_glyph_ret is %TRUE, the font subsetting will (where index to
+ * unicode mapping is supported) ensure that @scaled_font_glyph_index
+ * maps to @utf8. If @utf8_is_mapped is %FALSE,
+ * @scaled_font_glyph_index has already been mapped to a different
+ * unicode string.
+ *
+ * The returned values in the #cairo_scaled_font_subsets_glyph_t struct are:
+ *
+ * @font_id: The font ID of the mapped glyph
+ * @subset_id : The subset ID of the mapped glyph within the @font_id
+ * @subset_glyph_index: The index of the mapped glyph within the @subset_id subset
+ * @is_scaled: If true, the mapped glyph is from a bitmap font, and separate font
+ * subset is created for each font scale used. If false, the outline of the mapped glyph
+ * is available. One font subset for each font face is created.
+ * @x_advance, @y_advance: When @is_scaled is true, @x_advance and @y_advance contain
+ * the x and y advance for the mapped glyph in device space.
+ * When @is_scaled is false, @x_advance and @y_advance contain the x and y advance for
+ * the the mapped glyph from an unhinted 1 point font.
+ * @utf8_is_mapped: If true the utf8 string provided to _cairo_scaled_font_subsets_map_glyph()
+ * is (or already was) the utf8 string mapped to this glyph. If false the glyph is already
+ * mapped to a different utf8 string.
+ * @unicode: the unicode character mapped to this glyph by the font backend.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful, or a non-zero
+ * value indicating an error. Possible errors include
+ * %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_scaled_font_subsets_map_glyph (cairo_scaled_font_subsets_t	*font_subsets,
+				      cairo_scaled_font_t		*scaled_font,
+				      unsigned long			 scaled_font_glyph_index,
+				      const char *			 utf8,
+				      int				 utf8_len,
+                                      cairo_scaled_font_subsets_glyph_t *subset_glyph_ret);
+
+typedef cairo_int_status_t
+(*cairo_scaled_font_subset_callback_func_t) (cairo_scaled_font_subset_t	*font_subset,
+					     void			*closure);
+
+/**
+ * _cairo_scaled_font_subsets_foreach_scaled:
+ * @font_subsets: a #cairo_scaled_font_subsets_t
+ * @font_subset_callback: a function to be called for each font subset
+ * @closure: closure data for the callback function
+ *
+ * Iterate over each unique scaled font subset as created by calls to
+ * _cairo_scaled_font_subsets_map_glyph(). A subset is determined by
+ * unique pairs of (font_id, subset_id) as returned by
+ * _cairo_scaled_font_subsets_map_glyph().
+ *
+ * For each subset, @font_subset_callback will be called and will be
+ * provided with both a #cairo_scaled_font_subset_t object containing
+ * all the glyphs in the subset as well as the value of @closure.
+ *
+ * The #cairo_scaled_font_subset_t object contains the scaled_font,
+ * the font_id, and the subset_id corresponding to all glyphs
+ * belonging to the subset. In addition, it contains an array providing
+ * a mapping between subset glyph indices and the original scaled font
+ * glyph indices.
+ *
+ * The index of the array corresponds to subset_glyph_index values
+ * returned by _cairo_scaled_font_subsets_map_glyph() while the
+ * values of the array correspond to the scaled_font_glyph_index
+ * values passed as input to the same function.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful, or a non-zero
+ * value indicating an error. Possible errors include
+ * %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_scaled_font_subsets_foreach_scaled (cairo_scaled_font_subsets_t		    *font_subsets,
+				           cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+				           void					    *closure);
+
+/**
+ * _cairo_scaled_font_subsets_foreach_unscaled:
+ * @font_subsets: a #cairo_scaled_font_subsets_t
+ * @font_subset_callback: a function to be called for each font subset
+ * @closure: closure data for the callback function
+ *
+ * Iterate over each unique unscaled font subset as created by calls to
+ * _cairo_scaled_font_subsets_map_glyph(). A subset is determined by
+ * unique pairs of (font_id, subset_id) as returned by
+ * _cairo_scaled_font_subsets_map_glyph().
+ *
+ * For each subset, @font_subset_callback will be called and will be
+ * provided with both a #cairo_scaled_font_subset_t object containing
+ * all the glyphs in the subset as well as the value of @closure.
+ *
+ * The #cairo_scaled_font_subset_t object contains the scaled_font,
+ * the font_id, and the subset_id corresponding to all glyphs
+ * belonging to the subset. In addition, it contains an array providing
+ * a mapping between subset glyph indices and the original scaled font
+ * glyph indices.
+ *
+ * The index of the array corresponds to subset_glyph_index values
+ * returned by _cairo_scaled_font_subsets_map_glyph() while the
+ * values of the array correspond to the scaled_font_glyph_index
+ * values passed as input to the same function.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful, or a non-zero
+ * value indicating an error. Possible errors include
+ * %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_scaled_font_subsets_foreach_unscaled (cairo_scaled_font_subsets_t              *font_subsets,
+                                             cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+				             void				      *closure);
+
+/**
+ * _cairo_scaled_font_subsets_foreach_user:
+ * @font_subsets: a #cairo_scaled_font_subsets_t
+ * @font_subset_callback: a function to be called for each font subset
+ * @closure: closure data for the callback function
+ *
+ * Iterate over each unique scaled font subset as created by calls to
+ * _cairo_scaled_font_subsets_map_glyph(). A subset is determined by
+ * unique pairs of (font_id, subset_id) as returned by
+ * _cairo_scaled_font_subsets_map_glyph().
+ *
+ * For each subset, @font_subset_callback will be called and will be
+ * provided with both a #cairo_scaled_font_subset_t object containing
+ * all the glyphs in the subset as well as the value of @closure.
+ *
+ * The #cairo_scaled_font_subset_t object contains the scaled_font,
+ * the font_id, and the subset_id corresponding to all glyphs
+ * belonging to the subset. In addition, it contains an array providing
+ * a mapping between subset glyph indices and the original scaled font
+ * glyph indices.
+ *
+ * The index of the array corresponds to subset_glyph_index values
+ * returned by _cairo_scaled_font_subsets_map_glyph() while the
+ * values of the array correspond to the scaled_font_glyph_index
+ * values passed as input to the same function.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful, or a non-zero
+ * value indicating an error. Possible errors include
+ * %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_scaled_font_subsets_foreach_user (cairo_scaled_font_subsets_t		  *font_subsets,
+					 cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+					 void					  *closure);
+
+/**
+ * _cairo_scaled_font_subset_create_glyph_names:
+ * @font_subsets: a #cairo_scaled_font_subsets_t
+ *
+ * Create an array of strings containing the glyph name for each glyph
+ * in @font_subsets. The array as store in font_subsets->glyph_names.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font backend does not support
+ * mapping the glyph indices to unicode characters. Possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_int_status_t
+_cairo_scaled_font_subset_create_glyph_names (cairo_scaled_font_subset_t *subset);
+
+typedef struct _cairo_cff_subset {
+    char *family_name_utf8;
+    char *ps_name;
+    double *widths;
+    double x_min, y_min, x_max, y_max;
+    double ascent, descent;
+    char *data;
+    unsigned long data_length;
+} cairo_cff_subset_t;
+
+/**
+ * _cairo_cff_subset_init:
+ * @cff_subset: a #cairo_cff_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a
+ * cff file corresponding to @font_subset and initialize
+ * @cff_subset with information about the subset and the cff
+ * data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a
+ * cff file, or an non-zero value indicating an error.  Possible
+ * errors include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_cff_subset_init (cairo_cff_subset_t          *cff_subset,
+                        const char                  *name,
+                        cairo_scaled_font_subset_t  *font_subset);
+
+/**
+ * _cairo_cff_subset_fini:
+ * @cff_subset: a #cairo_cff_subset_t
+ *
+ * Free all resources associated with @cff_subset.  After this
+ * call, @cff_subset should not be used again without a
+ * subsequent call to _cairo_cff_subset_init() again first.
+ **/
+cairo_private void
+_cairo_cff_subset_fini (cairo_cff_subset_t *cff_subset);
+
+/**
+ * _cairo_cff_scaled_font_is_cid_cff:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Return %TRUE if @scaled_font is a CID CFF font, otherwise return %FALSE.
+ **/
+cairo_private cairo_bool_t
+_cairo_cff_scaled_font_is_cid_cff (cairo_scaled_font_t *scaled_font);
+
+/**
+ * _cairo_cff_fallback_init:
+ * @cff_subset: a #cairo_cff_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a cff
+ * file corresponding to @font_subset and initialize @cff_subset
+ * with information about the subset and the cff data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a
+ * cff file, or an non-zero value indicating an error.  Possible
+ * errors include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_cff_fallback_init (cairo_cff_subset_t          *cff_subset,
+                          const char                  *name,
+                          cairo_scaled_font_subset_t  *font_subset);
+
+/**
+ * _cairo_cff_fallback_fini:
+ * @cff_subset: a #cairo_cff_subset_t
+ *
+ * Free all resources associated with @cff_subset.  After this
+ * call, @cff_subset should not be used again without a
+ * subsequent call to _cairo_cff_subset_init() again first.
+ **/
+cairo_private void
+_cairo_cff_fallback_fini (cairo_cff_subset_t *cff_subset);
+
+typedef struct _cairo_truetype_subset {
+    char *family_name_utf8;
+    char *ps_name;
+    double *widths;
+    double x_min, y_min, x_max, y_max;
+    double ascent, descent;
+    unsigned char *data;
+    unsigned long data_length;
+    unsigned long *string_offsets;
+    unsigned long num_string_offsets;
+} cairo_truetype_subset_t;
+
+/**
+ * _cairo_truetype_subset_init_ps:
+ * @truetype_subset: a #cairo_truetype_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a
+ * truetype file corresponding to @font_subset and initialize
+ * @truetype_subset with information about the subset and the truetype
+ * data. The generated font will be suitable for embedding in
+ * PostScript.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a
+ * truetype file, or an non-zero value indicating an error.  Possible
+ * errors include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_truetype_subset_init_ps (cairo_truetype_subset_t    *truetype_subset,
+				cairo_scaled_font_subset_t *font_subset);
+
+/**
+ * _cairo_truetype_subset_init_pdf:
+ * @truetype_subset: a #cairo_truetype_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a
+ * truetype file corresponding to @font_subset and initialize
+ * @truetype_subset with information about the subset and the truetype
+ * data. The generated font will be suitable for embedding in
+ * PDF.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a
+ * truetype file, or an non-zero value indicating an error.  Possible
+ * errors include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_truetype_subset_init_pdf (cairo_truetype_subset_t    *truetype_subset,
+				 cairo_scaled_font_subset_t *font_subset);
+
+/**
+ * _cairo_truetype_subset_fini:
+ * @truetype_subset: a #cairo_truetype_subset_t
+ *
+ * Free all resources associated with @truetype_subset.  After this
+ * call, @truetype_subset should not be used again without a
+ * subsequent call to _cairo_truetype_subset_init() again first.
+ **/
+cairo_private void
+_cairo_truetype_subset_fini (cairo_truetype_subset_t *truetype_subset);
+
+cairo_private const char *
+_cairo_ps_standard_encoding_to_glyphname (int glyph);
+
+cairo_private int
+_cairo_unicode_to_winansi (unsigned long unicode);
+
+cairo_private const char *
+_cairo_winansi_to_glyphname (int glyph);
+
+typedef struct _cairo_type1_subset {
+    char *base_font;
+    double *widths;
+    double x_min, y_min, x_max, y_max;
+    double ascent, descent;
+    char *data;
+    unsigned long header_length;
+    unsigned long data_length;
+    unsigned long trailer_length;
+} cairo_type1_subset_t;
+
+
+/**
+ * _cairo_type1_subset_init:
+ * @type1_subset: a #cairo_type1_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ * @hex_encode: if true the encrypted portion of the font is hex encoded
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a type1
+ * file corresponding to @font_subset and initialize @type1_subset
+ * with information about the subset and the type1 data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a type1
+ * file, or an non-zero value indicating an error.  Possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_type1_subset_init (cairo_type1_subset_t		*type_subset,
+			  const char			*name,
+			  cairo_scaled_font_subset_t	*font_subset,
+                          cairo_bool_t                   hex_encode);
+
+/**
+ * _cairo_type1_subset_fini:
+ * @type1_subset: a #cairo_type1_subset_t
+ *
+ * Free all resources associated with @type1_subset.  After this call,
+ * @type1_subset should not be used again without a subsequent call to
+ * _cairo_truetype_type1_init() again first.
+ **/
+cairo_private void
+_cairo_type1_subset_fini (cairo_type1_subset_t *subset);
+
+/**
+ * _cairo_type1_scaled_font_is_type1:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Return %TRUE if @scaled_font is a Type 1 font, otherwise return %FALSE.
+ **/
+cairo_private cairo_bool_t
+_cairo_type1_scaled_font_is_type1 (cairo_scaled_font_t	*scaled_font);
+
+/**
+ * _cairo_type1_fallback_init_binary:
+ * @type1_subset: a #cairo_type1_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a type1
+ * file corresponding to @font_subset and initialize @type1_subset
+ * with information about the subset and the type1 data.  The encrypted
+ * part of the font is binary encoded.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a type1
+ * file, or an non-zero value indicating an error.  Possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_type1_fallback_init_binary (cairo_type1_subset_t	      *type_subset,
+                                   const char		      *name,
+                                   cairo_scaled_font_subset_t *font_subset);
+
+/**
+ * _cairo_type1_fallback_init_hex:
+ * @type1_subset: a #cairo_type1_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate a type1
+ * file corresponding to @font_subset and initialize @type1_subset
+ * with information about the subset and the type1 data. The encrypted
+ * part of the font is hex encoded.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a type1
+ * file, or an non-zero value indicating an error.  Possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_type1_fallback_init_hex (cairo_type1_subset_t	   *type_subset,
+                                const char		   *name,
+                                cairo_scaled_font_subset_t *font_subset);
+
+/**
+ * _cairo_type1_fallback_fini:
+ * @type1_subset: a #cairo_type1_subset_t
+ *
+ * Free all resources associated with @type1_subset.  After this call,
+ * @type1_subset should not be used again without a subsequent call to
+ * _cairo_truetype_type1_init() again first.
+ **/
+cairo_private void
+_cairo_type1_fallback_fini (cairo_type1_subset_t *subset);
+
+typedef struct _cairo_type2_charstrings {
+    int *widths;
+    long x_min, y_min, x_max, y_max;
+    long ascent, descent;
+    cairo_array_t charstrings;
+} cairo_type2_charstrings_t;
+
+/**
+ * _cairo_type2_charstrings_init:
+ * @type2_subset: a #cairo_type2_subset_t to initialize
+ * @font_subset: the #cairo_scaled_font_subset_t to initialize from
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) generate type2
+ * charstrings to @font_subset and initialize @type2_subset
+ * with information about the subset.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font can't be subset as a type2
+ * charstrings, or an non-zero value indicating an error.  Possible errors
+ * include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_status_t
+_cairo_type2_charstrings_init (cairo_type2_charstrings_t   *charstrings,
+                               cairo_scaled_font_subset_t  *font_subset);
+
+/**
+ * _cairo_type2_charstrings_fini:
+ * @subset: a #cairo_type2_charstrings_t
+ *
+ * Free all resources associated with @type2_charstring.  After this call,
+ * @type2_charstring should not be used again without a subsequent call to
+ * _cairo_type2_charstring_init() again first.
+ **/
+cairo_private void
+_cairo_type2_charstrings_fini (cairo_type2_charstrings_t *charstrings);
+
+/**
+ * _cairo_truetype_index_to_ucs4:
+ * @scaled_font: the #cairo_scaled_font_t
+ * @index: the glyph index
+ * @ucs4: return value for the unicode value of the glyph
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) assign
+ * the unicode character of the glyph to @ucs4.
+ *
+ * If mapping glyph indices to unicode is supported but the unicode
+ * value of the specified glyph is not available, @ucs4 is set to -1.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if mapping glyph indices to unicode
+ * is not supported.  Possible errors include %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_int_status_t
+_cairo_truetype_index_to_ucs4 (cairo_scaled_font_t *scaled_font,
+                               unsigned long        index,
+                               uint32_t            *ucs4);
+
+/**
+ * _cairo_truetype_read_font_name:
+ * @scaled_font: the #cairo_scaled_font_t
+ * @ps_name: returns the PostScript name of the font
+ *           or %NULL if the name could not be found.
+ * @font_name: returns the font name or %NULL if the name could not be found.
+ *
+ * If possible (depending on the format of the underlying
+ * #cairo_scaled_font_t and the font backend in use) read the
+ * PostScript and Font names from a TrueType/OpenType font.
+ *
+ * The font name is the full name of the font eg "DejaVu Sans Bold".
+ * The PostScript name is a shortened name with spaces removed
+ * suitable for use as the font name in a PS or PDF file eg
+ * "DejaVuSans-Bold".
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font is not TrueType/OpenType
+ * or the name table is not present.  Possible errors include
+ * %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_int_status_t
+_cairo_truetype_read_font_name (cairo_scaled_font_t   *scaled_font,
+				char		     **ps_name,
+				char		     **font_name);
+
+/**
+ * _cairo_truetype_get_style:
+ * @scaled_font: the #cairo_scaled_font_t
+ * @weight: returns the font weight from the OS/2 table
+ * @bold: returns true if font is bold
+ * @italic: returns true if font is italic
+ *
+ * If the font is a truetype/opentype font with an OS/2 table, get the
+ * weight, bold, and italic data from the OS/2 table.  The weight
+ * values have the same meaning as the lfWeight field of the Windows
+ * LOGFONT structure.  Refer to the TrueType Specification for
+ * definition of the weight values.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful,
+ * %CAIRO_INT_STATUS_UNSUPPORTED if the font is not TrueType/OpenType
+ * or the OS/2 table is not present.
+ **/
+cairo_private cairo_int_status_t
+_cairo_truetype_get_style (cairo_scaled_font_t  	 *scaled_font,
+			   int				 *weight,
+			   cairo_bool_t			 *bold,
+			   cairo_bool_t			 *italic);
+
+/**
+ * _cairo_escape_ps_name:
+ * @ps_name: returns the PostScript name with all invalid characters escaped
+ *
+ * Ensure that PostSript name is a valid PDF/PostSript name object.
+ * In PDF names are treated as UTF8 and non ASCII bytes, ' ',
+ * and '#' are encoded as '#' followed by 2 hex digits that
+ * encode the byte.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if successful. Possible errors include
+ * %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_private cairo_int_status_t
+_cairo_escape_ps_name (char **ps_name);
+
+#if DEBUG_SUBSETS
+cairo_private void
+dump_scaled_font_subsets (cairo_scaled_font_subsets_t *font_subsets);
+#endif
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
+
+#endif /* CAIRO_SCALED_FONT_SUBSETS_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-scaled-font-subsets.c b/libs/cairo-1.16.0/src/cairo-scaled-font-subsets.c
new file mode 100644
index 0000000..5c1afd2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-scaled-font-subsets.c
@@ -0,0 +1,1386 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2003 University of Southern California
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2006 Keith Packard
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Keith Packard <keithp@keithp.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-user-font-private.h"
+
+#define MAX_GLYPHS_PER_SIMPLE_FONT 256
+#define MAX_GLYPHS_PER_COMPOSITE_FONT 65536
+
+typedef enum {
+    CAIRO_SUBSETS_SCALED,
+    CAIRO_SUBSETS_SIMPLE,
+    CAIRO_SUBSETS_COMPOSITE
+} cairo_subsets_type_t;
+
+typedef enum {
+    CAIRO_SUBSETS_FOREACH_UNSCALED,
+    CAIRO_SUBSETS_FOREACH_SCALED,
+    CAIRO_SUBSETS_FOREACH_USER
+} cairo_subsets_foreach_type_t;
+
+typedef struct _cairo_sub_font {
+    cairo_hash_entry_t base;
+
+    cairo_bool_t is_scaled;
+    cairo_bool_t is_composite;
+    cairo_bool_t is_user;
+    cairo_bool_t use_latin_subset;
+    cairo_bool_t reserve_notdef;
+    cairo_scaled_font_subsets_t *parent;
+    cairo_scaled_font_t *scaled_font;
+    unsigned int font_id;
+
+    int current_subset;
+    int num_glyphs_in_current_subset;
+    int num_glyphs_in_latin_subset;
+    int max_glyphs_per_subset;
+    char latin_char_map[256];
+
+    cairo_hash_table_t *sub_font_glyphs;
+    struct _cairo_sub_font *next;
+} cairo_sub_font_t;
+
+struct _cairo_scaled_font_subsets {
+    cairo_subsets_type_t type;
+    cairo_bool_t use_latin_subset;
+
+    int max_glyphs_per_unscaled_subset_used;
+    cairo_hash_table_t *unscaled_sub_fonts;
+    cairo_sub_font_t *unscaled_sub_fonts_list;
+    cairo_sub_font_t *unscaled_sub_fonts_list_end;
+
+    int max_glyphs_per_scaled_subset_used;
+    cairo_hash_table_t *scaled_sub_fonts;
+    cairo_sub_font_t *scaled_sub_fonts_list;
+    cairo_sub_font_t *scaled_sub_fonts_list_end;
+
+    int num_sub_fonts;
+};
+
+typedef struct _cairo_sub_font_glyph {
+    cairo_hash_entry_t base;
+
+    unsigned int subset_id;
+    unsigned int subset_glyph_index;
+    double       x_advance;
+    double       y_advance;
+
+    cairo_bool_t is_latin;
+    int		 latin_character;
+    cairo_bool_t is_mapped;
+    uint32_t     unicode;
+    char  	*utf8;
+    int          utf8_len;
+} cairo_sub_font_glyph_t;
+
+typedef struct _cairo_sub_font_collection {
+    unsigned long *glyphs; /* scaled_font_glyph_index */
+    char       **utf8;
+    unsigned int glyphs_size;
+    int           *to_latin_char;
+    unsigned long *latin_to_subset_glyph_index;
+    unsigned int max_glyph;
+    unsigned int num_glyphs;
+
+    unsigned int subset_id;
+
+    cairo_status_t status;
+    cairo_scaled_font_subset_callback_func_t font_subset_callback;
+    void *font_subset_callback_closure;
+} cairo_sub_font_collection_t;
+
+typedef struct _cairo_string_entry {
+    cairo_hash_entry_t base;
+    char *string;
+} cairo_string_entry_t;
+
+static cairo_status_t
+_cairo_sub_font_map_glyph (cairo_sub_font_t	*sub_font,
+			   unsigned long	 scaled_font_glyph_index,
+			   const char *		 utf8,
+			   int			 utf8_len,
+                           cairo_scaled_font_subsets_glyph_t *subset_glyph);
+
+static void
+_cairo_sub_font_glyph_init_key (cairo_sub_font_glyph_t  *sub_font_glyph,
+				unsigned long		 scaled_font_glyph_index)
+{
+    sub_font_glyph->base.hash = scaled_font_glyph_index;
+}
+
+static cairo_sub_font_glyph_t *
+_cairo_sub_font_glyph_create (unsigned long	scaled_font_glyph_index,
+			      unsigned int	subset_id,
+			      unsigned int	subset_glyph_index,
+                              double            x_advance,
+                              double            y_advance,
+			      int	        latin_character,
+			      uint32_t          unicode,
+			      char             *utf8,
+			      int          	utf8_len)
+{
+    cairo_sub_font_glyph_t *sub_font_glyph;
+
+    sub_font_glyph = _cairo_malloc (sizeof (cairo_sub_font_glyph_t));
+    if (unlikely (sub_font_glyph == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    _cairo_sub_font_glyph_init_key (sub_font_glyph, scaled_font_glyph_index);
+    sub_font_glyph->subset_id = subset_id;
+    sub_font_glyph->subset_glyph_index = subset_glyph_index;
+    sub_font_glyph->x_advance = x_advance;
+    sub_font_glyph->y_advance = y_advance;
+    sub_font_glyph->is_latin = (latin_character >= 0);
+    sub_font_glyph->latin_character = latin_character;
+    sub_font_glyph->is_mapped = FALSE;
+    sub_font_glyph->unicode = unicode;
+    sub_font_glyph->utf8 = utf8;
+    sub_font_glyph->utf8_len = utf8_len;
+
+    return sub_font_glyph;
+}
+
+static void
+_cairo_sub_font_glyph_destroy (cairo_sub_font_glyph_t *sub_font_glyph)
+{
+    free (sub_font_glyph->utf8);
+
+    free (sub_font_glyph);
+}
+
+static void
+_cairo_sub_font_glyph_pluck (void *entry, void *closure)
+{
+    cairo_sub_font_glyph_t *sub_font_glyph = entry;
+    cairo_hash_table_t *sub_font_glyphs = closure;
+
+    _cairo_hash_table_remove (sub_font_glyphs, &sub_font_glyph->base);
+    _cairo_sub_font_glyph_destroy (sub_font_glyph);
+}
+
+static void
+_cairo_sub_font_glyph_collect (void *entry, void *closure)
+{
+    cairo_sub_font_glyph_t *sub_font_glyph = entry;
+    cairo_sub_font_collection_t *collection = closure;
+    unsigned long scaled_font_glyph_index;
+    unsigned int subset_glyph_index;
+
+    if (sub_font_glyph->subset_id != collection->subset_id)
+	return;
+
+    scaled_font_glyph_index = sub_font_glyph->base.hash;
+    subset_glyph_index = sub_font_glyph->subset_glyph_index;
+
+    /* Ensure we don't exceed the allocated bounds. */
+    assert (subset_glyph_index < collection->glyphs_size);
+
+    collection->glyphs[subset_glyph_index] = scaled_font_glyph_index;
+    collection->utf8[subset_glyph_index] = sub_font_glyph->utf8;
+    collection->to_latin_char[subset_glyph_index] = sub_font_glyph->latin_character;
+    if (sub_font_glyph->is_latin)
+	collection->latin_to_subset_glyph_index[sub_font_glyph->latin_character] = subset_glyph_index;
+
+    if (subset_glyph_index > collection->max_glyph)
+	collection->max_glyph = subset_glyph_index;
+
+    collection->num_glyphs++;
+}
+
+static cairo_bool_t
+_cairo_sub_fonts_equal (const void *key_a, const void *key_b)
+{
+    const cairo_sub_font_t *sub_font_a = key_a;
+    const cairo_sub_font_t *sub_font_b = key_b;
+    cairo_scaled_font_t *a = sub_font_a->scaled_font;
+    cairo_scaled_font_t *b = sub_font_b->scaled_font;
+
+    if (sub_font_a->is_scaled)
+        return a == b;
+    else
+	return a->font_face == b->font_face || a->original_font_face == b->original_font_face;
+}
+
+static void
+_cairo_sub_font_init_key (cairo_sub_font_t	*sub_font,
+			  cairo_scaled_font_t	*scaled_font)
+{
+    if (sub_font->is_scaled)
+    {
+        sub_font->base.hash = (unsigned long) scaled_font;
+        sub_font->scaled_font = scaled_font;
+    }
+    else
+    {
+        sub_font->base.hash = (unsigned long) scaled_font->font_face;
+        sub_font->scaled_font = scaled_font;
+    }
+}
+
+static cairo_status_t
+_cairo_sub_font_create (cairo_scaled_font_subsets_t	*parent,
+			cairo_scaled_font_t		*scaled_font,
+			unsigned int			 font_id,
+			int				 max_glyphs_per_subset,
+                        cairo_bool_t                     is_scaled,
+			cairo_bool_t                     is_composite,
+			cairo_sub_font_t               **sub_font_out)
+{
+    cairo_sub_font_t *sub_font;
+    int i;
+
+    sub_font = _cairo_malloc (sizeof (cairo_sub_font_t));
+    if (unlikely (sub_font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    sub_font->is_scaled = is_scaled;
+    sub_font->is_composite = is_composite;
+    sub_font->is_user = _cairo_font_face_is_user (scaled_font->font_face);
+    sub_font->reserve_notdef = !sub_font->is_user;
+    _cairo_sub_font_init_key (sub_font, scaled_font);
+
+    sub_font->parent = parent;
+    sub_font->scaled_font = scaled_font;
+    sub_font->font_id = font_id;
+
+    sub_font->use_latin_subset = parent->use_latin_subset;
+
+    /* latin subsets of Type 3 and CID CFF fonts are not supported */
+    if (sub_font->is_user || sub_font->is_scaled ||
+	_cairo_cff_scaled_font_is_cid_cff (scaled_font) )
+    {
+	sub_font->use_latin_subset = FALSE;
+    }
+
+    if (sub_font->use_latin_subset)
+	sub_font->current_subset = 1; /* reserve subset 0 for latin glyphs */
+    else
+	sub_font->current_subset = 0;
+
+    sub_font->num_glyphs_in_current_subset = 0;
+    sub_font->num_glyphs_in_latin_subset = 0;
+    sub_font->max_glyphs_per_subset = max_glyphs_per_subset;
+    for (i = 0; i < 256; i++)
+	sub_font->latin_char_map[i] = FALSE;
+
+    sub_font->sub_font_glyphs = _cairo_hash_table_create (NULL);
+    if (unlikely (sub_font->sub_font_glyphs == NULL)) {
+	free (sub_font);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+    sub_font->next = NULL;
+    *sub_font_out = sub_font;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_sub_font_destroy (cairo_sub_font_t *sub_font)
+{
+    _cairo_hash_table_foreach (sub_font->sub_font_glyphs,
+			       _cairo_sub_font_glyph_pluck,
+			       sub_font->sub_font_glyphs);
+    _cairo_hash_table_destroy (sub_font->sub_font_glyphs);
+    cairo_scaled_font_destroy (sub_font->scaled_font);
+    free (sub_font);
+}
+
+static void
+_cairo_sub_font_pluck (void *entry, void *closure)
+{
+    cairo_sub_font_t *sub_font = entry;
+    cairo_hash_table_t *sub_fonts = closure;
+
+    _cairo_hash_table_remove (sub_fonts, &sub_font->base);
+    _cairo_sub_font_destroy (sub_font);
+}
+
+/* Characters 0x80 to 0x9f in the winansi encoding.
+ * All other characters in the range 0x00 to 0xff map 1:1 to unicode */
+static unsigned int _winansi_0x80_to_0x9f[] = {
+    0x20ac, 0x0000, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
+    0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0x0000, 0x017d, 0x0000,
+    0x0000, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
+    0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0x0000, 0x017e, 0x0178
+};
+
+int
+_cairo_unicode_to_winansi (unsigned long uni)
+{
+    int i;
+
+    /* exclude the extra "hyphen" at 0xad to avoid duplicate glyphnames */
+    if ((uni >= 0x20 && uni <= 0x7e) ||
+	(uni >= 0xa1 && uni <= 0xff && uni != 0xad) ||
+	uni == 0)
+        return uni;
+
+    for (i = 0; i < 32; i++)
+	if (_winansi_0x80_to_0x9f[i] == uni)
+	    return i + 0x80;
+
+    return -1;
+}
+
+static cairo_status_t
+_cairo_sub_font_glyph_lookup_unicode (cairo_scaled_font_t    *scaled_font,
+				      unsigned long	      scaled_font_glyph_index,
+				      uint32_t     	     *unicode_out,
+				      char  		    **utf8_out,
+				      int          	     *utf8_len_out)
+{
+    uint32_t unicode;
+    char buf[8];
+    int len;
+    cairo_status_t status;
+
+    /* Do a reverse lookup on the glyph index. unicode is -1 if the
+     * index could not be mapped to a unicode character. */
+    unicode = -1;
+    status = _cairo_truetype_index_to_ucs4 (scaled_font,
+					    scaled_font_glyph_index,
+					    &unicode);
+    if (_cairo_status_is_error (status))
+	return status;
+
+    if (unicode == (uint32_t)-1 && scaled_font->backend->index_to_ucs4) {
+	status = scaled_font->backend->index_to_ucs4 (scaled_font,
+						      scaled_font_glyph_index,
+						      &unicode);
+	if (unlikely (status))
+	    return status;
+    }
+
+    *unicode_out = unicode;
+    *utf8_out = NULL;
+    *utf8_len_out = 0;
+    if (unicode != (uint32_t) -1) {
+	len = _cairo_ucs4_to_utf8 (unicode, buf);
+	if (len > 0) {
+	    *utf8_out = _cairo_malloc (len + 1);
+	    if (unlikely (*utf8_out == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (*utf8_out, buf, len);
+	    (*utf8_out)[len] = 0;
+	    *utf8_len_out = len;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_sub_font_glyph_map_to_unicode (cairo_sub_font_glyph_t *sub_font_glyph,
+				      const char	     *utf8,
+				      int		      utf8_len,
+				      cairo_bool_t	     *is_mapped)
+{
+    *is_mapped = FALSE;
+
+    if (utf8_len < 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (utf8 != NULL && utf8_len != 0 && utf8[utf8_len - 1] == '\0')
+	utf8_len--;
+
+    if (utf8 != NULL && utf8_len != 0) {
+	if (sub_font_glyph->utf8 != NULL) {
+	    if (utf8_len == sub_font_glyph->utf8_len &&
+		memcmp (utf8, sub_font_glyph->utf8, utf8_len) == 0)
+	    {
+		/* Requested utf8 mapping matches the existing mapping */
+		*is_mapped = TRUE;
+	    }
+	} else {
+	    /* No existing mapping. Use the requested mapping */
+	    sub_font_glyph->utf8 = _cairo_malloc (utf8_len + 1);
+	    if (unlikely (sub_font_glyph->utf8 == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (sub_font_glyph->utf8, utf8, utf8_len);
+	    sub_font_glyph->utf8[utf8_len] = 0;
+	    sub_font_glyph->utf8_len = utf8_len;
+	    *is_mapped = TRUE;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_sub_font_lookup_glyph (cairo_sub_font_t	                *sub_font,
+                              unsigned long	                 scaled_font_glyph_index,
+			      const char			*utf8,
+			      int				 utf8_len,
+                              cairo_scaled_font_subsets_glyph_t *subset_glyph)
+{
+    cairo_sub_font_glyph_t key, *sub_font_glyph;
+    cairo_int_status_t status;
+
+    _cairo_sub_font_glyph_init_key (&key, scaled_font_glyph_index);
+    sub_font_glyph = _cairo_hash_table_lookup (sub_font->sub_font_glyphs,
+					      &key.base);
+    if (sub_font_glyph != NULL) {
+        subset_glyph->font_id = sub_font->font_id;
+        subset_glyph->subset_id = sub_font_glyph->subset_id;
+	if (sub_font_glyph->is_latin)
+	    subset_glyph->subset_glyph_index = sub_font_glyph->latin_character;
+	else
+	    subset_glyph->subset_glyph_index = sub_font_glyph->subset_glyph_index;
+
+        subset_glyph->is_scaled = sub_font->is_scaled;
+        subset_glyph->is_composite = sub_font->is_composite;
+	subset_glyph->is_latin = sub_font_glyph->is_latin;
+        subset_glyph->x_advance = sub_font_glyph->x_advance;
+        subset_glyph->y_advance = sub_font_glyph->y_advance;
+	status = _cairo_sub_font_glyph_map_to_unicode (sub_font_glyph,
+						       utf8, utf8_len,
+						       &subset_glyph->utf8_is_mapped);
+	subset_glyph->unicode = sub_font_glyph->unicode;
+
+	return status;
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_status_t
+_cairo_sub_font_add_glyph (cairo_sub_font_t	   *sub_font,
+			   unsigned long	    scaled_font_glyph_index,
+			   cairo_bool_t		    is_latin,
+			   int			    latin_character,
+			   uint32_t 		    unicode,
+			   char 		   *utf8,
+			   int 			    utf8_len,
+			   cairo_sub_font_glyph_t **sub_font_glyph_out)
+{
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_sub_font_glyph_t *sub_font_glyph;
+    int *num_glyphs_in_subset_ptr;
+    double x_advance;
+    double y_advance;
+    cairo_int_status_t status;
+
+    _cairo_scaled_font_freeze_cache (sub_font->scaled_font);
+    status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
+					 scaled_font_glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS,
+					 &scaled_glyph);
+    assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
+    if (unlikely (status)) {
+	_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
+	return status;
+    }
+
+    x_advance = scaled_glyph->metrics.x_advance;
+    y_advance = scaled_glyph->metrics.y_advance;
+    _cairo_scaled_font_thaw_cache (sub_font->scaled_font);
+
+    if (!is_latin && sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
+    {
+	sub_font->current_subset++;
+	sub_font->num_glyphs_in_current_subset = 0;
+    }
+
+    if (is_latin)
+	num_glyphs_in_subset_ptr = &sub_font->num_glyphs_in_latin_subset;
+    else
+	num_glyphs_in_subset_ptr = &sub_font->num_glyphs_in_current_subset;
+
+    if ((*num_glyphs_in_subset_ptr == 0) && sub_font->reserve_notdef)
+	(*num_glyphs_in_subset_ptr)++;
+
+    sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
+						   is_latin ? 0 : sub_font->current_subset,
+						   *num_glyphs_in_subset_ptr,
+						   x_advance,
+						   y_advance,
+						   is_latin ? latin_character : -1,
+						   unicode,
+						   utf8,
+						   utf8_len);
+
+    if (unlikely (sub_font_glyph == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
+    if (unlikely (status)) {
+	_cairo_sub_font_glyph_destroy (sub_font_glyph);
+	return status;
+    }
+
+    (*num_glyphs_in_subset_ptr)++;
+    if (sub_font->is_scaled) {
+	if (*num_glyphs_in_subset_ptr > sub_font->parent->max_glyphs_per_scaled_subset_used)
+	    sub_font->parent->max_glyphs_per_scaled_subset_used = *num_glyphs_in_subset_ptr;
+    } else {
+	if (*num_glyphs_in_subset_ptr > sub_font->parent->max_glyphs_per_unscaled_subset_used)
+	    sub_font->parent->max_glyphs_per_unscaled_subset_used = *num_glyphs_in_subset_ptr;
+    }
+
+    *sub_font_glyph_out = sub_font_glyph;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_sub_font_map_glyph (cairo_sub_font_t	*sub_font,
+			   unsigned long	 scaled_font_glyph_index,
+			   const char		*text_utf8,
+			   int			 text_utf8_len,
+                           cairo_scaled_font_subsets_glyph_t *subset_glyph)
+{
+    cairo_sub_font_glyph_t key, *sub_font_glyph;
+    cairo_status_t status;
+
+    _cairo_sub_font_glyph_init_key (&key, scaled_font_glyph_index);
+    sub_font_glyph = _cairo_hash_table_lookup (sub_font->sub_font_glyphs,
+					       &key.base);
+    if (sub_font_glyph == NULL) {
+	uint32_t font_unicode;
+	char *font_utf8;
+	int font_utf8_len;
+	cairo_bool_t is_latin;
+	int latin_character;
+
+	status = _cairo_sub_font_glyph_lookup_unicode (sub_font->scaled_font,
+							   scaled_font_glyph_index,
+							   &font_unicode,
+							   &font_utf8,
+							   &font_utf8_len);
+	if (unlikely(status))
+	    return status;
+
+	/* If the supplied utf8 is a valid single character, use it
+	 * instead of the font lookup */
+	if (text_utf8 != NULL && text_utf8_len > 0) {
+	    uint32_t  *ucs4;
+	    int	ucs4_len;
+
+	    status = _cairo_utf8_to_ucs4 (text_utf8, text_utf8_len,
+					  &ucs4, &ucs4_len);
+	    if (status == CAIRO_STATUS_SUCCESS) {
+		if (ucs4_len == 1) {
+		    font_unicode = ucs4[0];
+		    free (font_utf8);
+		    font_utf8 = _cairo_malloc (text_utf8_len + 1);
+		    if (font_utf8 == NULL) {
+			free (ucs4);
+			return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		    }
+		    memcpy (font_utf8, text_utf8, text_utf8_len);
+		    font_utf8[text_utf8_len] = 0;
+		    font_utf8_len = text_utf8_len;
+		}
+		free (ucs4);
+	    }
+	}
+
+	/* If glyph is in the winansi encoding and font is not a user
+	 * font, put glyph in the latin subset. If glyph is .notdef
+	 * the latin subset is preferred but only if the latin subset
+	 * already contains at least one glyph. We don't want to
+	 * create a separate subset just for the .notdef glyph.
+	 */
+	is_latin = FALSE;
+	latin_character = -1;
+	if (sub_font->use_latin_subset &&
+	    (! _cairo_font_face_is_user (sub_font->scaled_font->font_face)))
+	{
+	    latin_character = _cairo_unicode_to_winansi (font_unicode);
+	    if (latin_character > 0 ||
+		(latin_character == 0 && sub_font->num_glyphs_in_latin_subset > 0))
+	    {
+		if (!sub_font->latin_char_map[latin_character]) {
+		    sub_font->latin_char_map[latin_character] = TRUE;
+		    is_latin = TRUE;
+		}
+	    }
+	}
+
+	status = _cairo_sub_font_add_glyph (sub_font,
+					    scaled_font_glyph_index,
+					    is_latin,
+					    latin_character,
+					    font_unicode,
+					    font_utf8,
+					    font_utf8_len,
+					    &sub_font_glyph);
+	if (unlikely(status))
+	    return status;
+    }
+
+    subset_glyph->font_id = sub_font->font_id;
+    subset_glyph->subset_id = sub_font_glyph->subset_id;
+    if (sub_font_glyph->is_latin)
+	subset_glyph->subset_glyph_index = sub_font_glyph->latin_character;
+    else
+	subset_glyph->subset_glyph_index = sub_font_glyph->subset_glyph_index;
+
+    subset_glyph->is_scaled = sub_font->is_scaled;
+    subset_glyph->is_composite = sub_font->is_composite;
+    subset_glyph->is_latin = sub_font_glyph->is_latin;
+    subset_glyph->x_advance = sub_font_glyph->x_advance;
+    subset_glyph->y_advance = sub_font_glyph->y_advance;
+    status = _cairo_sub_font_glyph_map_to_unicode (sub_font_glyph,
+						   text_utf8, text_utf8_len,
+						   &subset_glyph->utf8_is_mapped);
+    subset_glyph->unicode = sub_font_glyph->unicode;
+
+    return status;
+}
+
+static void
+_cairo_sub_font_collect (void *entry, void *closure)
+{
+    cairo_sub_font_t *sub_font = entry;
+    cairo_sub_font_collection_t *collection = closure;
+    cairo_scaled_font_subset_t subset;
+    int i;
+    unsigned int j;
+
+    if (collection->status)
+	return;
+
+    collection->status = sub_font->scaled_font->status;
+    if (collection->status)
+	return;
+
+    for (i = 0; i <= sub_font->current_subset; i++) {
+	collection->subset_id = i;
+	collection->num_glyphs = 0;
+	collection->max_glyph = 0;
+	memset (collection->latin_to_subset_glyph_index, 0, 256*sizeof(unsigned long));
+
+	if (sub_font->reserve_notdef) {
+	    // add .notdef
+	    collection->glyphs[0] = 0;
+	    collection->utf8[0] = 0;
+	    collection->to_latin_char[0] = 0;
+	    collection->latin_to_subset_glyph_index[0] = 0;
+	    collection->num_glyphs++;
+	}
+
+	_cairo_hash_table_foreach (sub_font->sub_font_glyphs,
+				   _cairo_sub_font_glyph_collect, collection);
+	if (collection->status)
+	    break;
+
+	if (collection->num_glyphs == 0)
+	    continue;
+
+	if (sub_font->reserve_notdef && collection->num_glyphs == 1)
+	    continue;
+
+        /* Ensure the resulting array has no uninitialized holes */
+	assert (collection->num_glyphs == collection->max_glyph + 1);
+
+	subset.scaled_font = sub_font->scaled_font;
+	subset.is_composite = sub_font->is_composite;
+	subset.is_scaled = sub_font->is_scaled;
+	subset.font_id = sub_font->font_id;
+	subset.subset_id = i;
+	subset.glyphs = collection->glyphs;
+	subset.utf8 = collection->utf8;
+	subset.num_glyphs = collection->num_glyphs;
+        subset.glyph_names = NULL;
+
+	subset.is_latin = FALSE;
+	if (sub_font->use_latin_subset && i == 0) {
+	    subset.is_latin = TRUE;
+	    subset.to_latin_char = collection->to_latin_char;
+	    subset.latin_to_subset_glyph_index = collection->latin_to_subset_glyph_index;
+	} else {
+	    subset.to_latin_char = NULL;
+	    subset.latin_to_subset_glyph_index = NULL;
+	}
+
+        collection->status = (collection->font_subset_callback) (&subset,
+					    collection->font_subset_callback_closure);
+
+	if (subset.glyph_names != NULL) {
+            for (j = 0; j < collection->num_glyphs; j++)
+		free (subset.glyph_names[j]);
+	    free (subset.glyph_names);
+	}
+
+	if (collection->status)
+	    break;
+    }
+}
+
+static cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_internal (cairo_subsets_type_t type)
+{
+    cairo_scaled_font_subsets_t *subsets;
+
+    subsets = _cairo_malloc (sizeof (cairo_scaled_font_subsets_t));
+    if (unlikely (subsets == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    subsets->type = type;
+    subsets->use_latin_subset = FALSE;
+    subsets->max_glyphs_per_unscaled_subset_used = 0;
+    subsets->max_glyphs_per_scaled_subset_used = 0;
+    subsets->num_sub_fonts = 0;
+
+    subsets->unscaled_sub_fonts = _cairo_hash_table_create (_cairo_sub_fonts_equal);
+    if (! subsets->unscaled_sub_fonts) {
+	free (subsets);
+	return NULL;
+    }
+    subsets->unscaled_sub_fonts_list = NULL;
+    subsets->unscaled_sub_fonts_list_end = NULL;
+
+    subsets->scaled_sub_fonts = _cairo_hash_table_create (_cairo_sub_fonts_equal);
+    if (! subsets->scaled_sub_fonts) {
+	_cairo_hash_table_destroy (subsets->unscaled_sub_fonts);
+	free (subsets);
+	return NULL;
+    }
+    subsets->scaled_sub_fonts_list = NULL;
+    subsets->scaled_sub_fonts_list_end = NULL;
+
+    return subsets;
+}
+
+cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_scaled (void)
+{
+    return _cairo_scaled_font_subsets_create_internal (CAIRO_SUBSETS_SCALED);
+}
+
+cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_simple (void)
+{
+    return _cairo_scaled_font_subsets_create_internal (CAIRO_SUBSETS_SIMPLE);
+}
+
+cairo_scaled_font_subsets_t *
+_cairo_scaled_font_subsets_create_composite (void)
+{
+    return _cairo_scaled_font_subsets_create_internal (CAIRO_SUBSETS_COMPOSITE);
+}
+
+void
+_cairo_scaled_font_subsets_destroy (cairo_scaled_font_subsets_t *subsets)
+{
+    _cairo_hash_table_foreach (subsets->scaled_sub_fonts, _cairo_sub_font_pluck, subsets->scaled_sub_fonts);
+    _cairo_hash_table_destroy (subsets->scaled_sub_fonts);
+
+    _cairo_hash_table_foreach (subsets->unscaled_sub_fonts, _cairo_sub_font_pluck, subsets->unscaled_sub_fonts);
+    _cairo_hash_table_destroy (subsets->unscaled_sub_fonts);
+
+    free (subsets);
+}
+
+void
+_cairo_scaled_font_subsets_enable_latin_subset (cairo_scaled_font_subsets_t *font_subsets,
+						cairo_bool_t                 use_latin)
+{
+    font_subsets->use_latin_subset = use_latin;
+}
+
+cairo_status_t
+_cairo_scaled_font_subsets_map_glyph (cairo_scaled_font_subsets_t	*subsets,
+				      cairo_scaled_font_t		*scaled_font,
+				      unsigned long			 scaled_font_glyph_index,
+				      const char *			 utf8,
+				      int				 utf8_len,
+                                      cairo_scaled_font_subsets_glyph_t *subset_glyph)
+{
+    cairo_sub_font_t key, *sub_font;
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_font_face_t *font_face;
+    cairo_matrix_t identity;
+    cairo_font_options_t font_options;
+    cairo_scaled_font_t	*unscaled_font;
+    cairo_int_status_t status;
+    int max_glyphs;
+    cairo_bool_t type1_font;
+
+    /* Lookup glyph in unscaled subsets */
+    if (subsets->type != CAIRO_SUBSETS_SCALED) {
+        key.is_scaled = FALSE;
+        _cairo_sub_font_init_key (&key, scaled_font);
+	sub_font = _cairo_hash_table_lookup (subsets->unscaled_sub_fonts,
+					     &key.base);
+        if (sub_font != NULL) {
+            status = _cairo_sub_font_lookup_glyph (sub_font,
+						   scaled_font_glyph_index,
+						   utf8, utf8_len,
+						   subset_glyph);
+	    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+                return status;
+        }
+    }
+
+    /* Lookup glyph in scaled subsets */
+    key.is_scaled = TRUE;
+    _cairo_sub_font_init_key (&key, scaled_font);
+    sub_font = _cairo_hash_table_lookup (subsets->scaled_sub_fonts,
+					 &key.base);
+    if (sub_font != NULL) {
+	status = _cairo_sub_font_lookup_glyph (sub_font,
+					       scaled_font_glyph_index,
+					       utf8, utf8_len,
+					       subset_glyph);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    /* Glyph not found. Determine whether the glyph is outline or
+     * bitmap and add to the appropriate subset.
+     *
+     * glyph_index 0 (the .notdef glyph) is a special case. Some fonts
+     * will return CAIRO_INT_STATUS_UNSUPPORTED when doing a
+     * _scaled_glyph_lookup(_GLYPH_INFO_PATH). Type1-fallback creates
+     * empty glyphs in this case so we can put the glyph in a unscaled
+     * subset. */
+    if (scaled_font_glyph_index == 0 ||
+	_cairo_font_face_is_user (scaled_font->font_face)) {
+	status = CAIRO_STATUS_SUCCESS;
+    } else {
+	_cairo_scaled_font_freeze_cache (scaled_font);
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     scaled_font_glyph_index,
+					     CAIRO_SCALED_GLYPH_INFO_PATH,
+					     &scaled_glyph);
+	_cairo_scaled_font_thaw_cache (scaled_font);
+    }
+    if (_cairo_int_status_is_error (status))
+        return status;
+
+    if (status == CAIRO_INT_STATUS_SUCCESS &&
+	subsets->type != CAIRO_SUBSETS_SCALED &&
+	! _cairo_font_face_is_user (scaled_font->font_face))
+    {
+        /* Path available. Add to unscaled subset. */
+        key.is_scaled = FALSE;
+        _cairo_sub_font_init_key (&key, scaled_font);
+	sub_font = _cairo_hash_table_lookup (subsets->unscaled_sub_fonts,
+					     &key.base);
+        if (sub_font == NULL) {
+            font_face = cairo_scaled_font_get_font_face (scaled_font);
+            cairo_matrix_init_identity (&identity);
+            _cairo_font_options_init_default (&font_options);
+            cairo_font_options_set_hint_style (&font_options, CAIRO_HINT_STYLE_NONE);
+            cairo_font_options_set_hint_metrics (&font_options, CAIRO_HINT_METRICS_OFF);
+            unscaled_font = cairo_scaled_font_create (font_face,
+                                                      &identity,
+                                                      &identity,
+                                                      &font_options);
+	    if (unlikely (unscaled_font->status))
+		return unscaled_font->status;
+
+            subset_glyph->is_scaled = FALSE;
+            type1_font = _cairo_type1_scaled_font_is_type1 (unscaled_font);
+            if (subsets->type == CAIRO_SUBSETS_COMPOSITE && !type1_font) {
+                max_glyphs = MAX_GLYPHS_PER_COMPOSITE_FONT;
+                subset_glyph->is_composite = TRUE;
+            } else {
+                max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
+                subset_glyph->is_composite = FALSE;
+            }
+
+            status = _cairo_sub_font_create (subsets,
+					     unscaled_font,
+					     subsets->num_sub_fonts,
+					     max_glyphs,
+					     subset_glyph->is_scaled,
+					     subset_glyph->is_composite,
+					     &sub_font);
+
+            if (unlikely (status)) {
+		cairo_scaled_font_destroy (unscaled_font);
+                return status;
+	    }
+
+            status = _cairo_hash_table_insert (subsets->unscaled_sub_fonts,
+                                               &sub_font->base);
+
+            if (unlikely (status)) {
+		_cairo_sub_font_destroy (sub_font);
+                return status;
+	    }
+	    if (!subsets->unscaled_sub_fonts_list)
+		subsets->unscaled_sub_fonts_list = sub_font;
+	    else
+		subsets->unscaled_sub_fonts_list_end->next = sub_font;
+	    subsets->unscaled_sub_fonts_list_end = sub_font;
+	    subsets->num_sub_fonts++;
+        }
+    } else {
+        /* No path available. Add to scaled subset. */
+        key.is_scaled = TRUE;
+        _cairo_sub_font_init_key (&key, scaled_font);
+	sub_font = _cairo_hash_table_lookup (subsets->scaled_sub_fonts,
+					     &key.base);
+        if (sub_font == NULL) {
+            subset_glyph->is_scaled = TRUE;
+            subset_glyph->is_composite = FALSE;
+            if (subsets->type == CAIRO_SUBSETS_SCALED)
+                max_glyphs = INT_MAX;
+            else
+                max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
+
+            status = _cairo_sub_font_create (subsets,
+					     cairo_scaled_font_reference (scaled_font),
+					     subsets->num_sub_fonts,
+					     max_glyphs,
+					     subset_glyph->is_scaled,
+					     subset_glyph->is_composite,
+					     &sub_font);
+            if (unlikely (status)) {
+		cairo_scaled_font_destroy (scaled_font);
+                return status;
+	    }
+
+            status = _cairo_hash_table_insert (subsets->scaled_sub_fonts,
+                                               &sub_font->base);
+            if (unlikely (status)) {
+		_cairo_sub_font_destroy (sub_font);
+                return status;
+	    }
+	    if (!subsets->scaled_sub_fonts_list)
+		subsets->scaled_sub_fonts_list = sub_font;
+	    else
+		subsets->scaled_sub_fonts_list_end->next = sub_font;
+	    subsets->scaled_sub_fonts_list_end = sub_font;
+	    subsets->num_sub_fonts++;
+        }
+    }
+
+    return _cairo_sub_font_map_glyph (sub_font,
+				      scaled_font_glyph_index,
+				      utf8, utf8_len,
+				      subset_glyph);
+}
+
+static cairo_status_t
+_cairo_scaled_font_subsets_foreach_internal (cairo_scaled_font_subsets_t              *font_subsets,
+                                             cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+                                             void				      *closure,
+					     cairo_subsets_foreach_type_t	       type)
+{
+    cairo_sub_font_collection_t collection;
+    cairo_sub_font_t *sub_font;
+    cairo_bool_t is_scaled, is_user;
+
+    is_scaled = FALSE;
+    is_user = FALSE;
+
+    if (type == CAIRO_SUBSETS_FOREACH_USER)
+	is_user = TRUE;
+
+    if (type == CAIRO_SUBSETS_FOREACH_SCALED ||
+	type == CAIRO_SUBSETS_FOREACH_USER)
+    {
+	is_scaled = TRUE;
+    }
+
+    if (is_scaled)
+        collection.glyphs_size = font_subsets->max_glyphs_per_scaled_subset_used;
+    else
+        collection.glyphs_size = font_subsets->max_glyphs_per_unscaled_subset_used;
+
+    if (! collection.glyphs_size)
+	return CAIRO_STATUS_SUCCESS;
+
+    collection.glyphs = _cairo_malloc_ab (collection.glyphs_size, sizeof(unsigned long));
+    collection.utf8 = _cairo_malloc_ab (collection.glyphs_size, sizeof(char *));
+    collection.to_latin_char = _cairo_malloc_ab (collection.glyphs_size, sizeof(int));
+    collection.latin_to_subset_glyph_index = _cairo_malloc_ab (256, sizeof(unsigned long));
+    if (unlikely (collection.glyphs == NULL ||
+		  collection.utf8 == NULL ||
+		  collection.to_latin_char == NULL ||
+		  collection.latin_to_subset_glyph_index == NULL)) {
+	free (collection.glyphs);
+	free (collection.utf8);
+	free (collection.to_latin_char);
+	free (collection.latin_to_subset_glyph_index);
+
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    collection.font_subset_callback = font_subset_callback;
+    collection.font_subset_callback_closure = closure;
+    collection.status = CAIRO_STATUS_SUCCESS;
+
+    if (is_scaled)
+	sub_font = font_subsets->scaled_sub_fonts_list;
+    else
+	sub_font = font_subsets->unscaled_sub_fonts_list;
+
+    while (sub_font) {
+	if (sub_font->is_user == is_user)
+	    _cairo_sub_font_collect (sub_font, &collection);
+
+	sub_font = sub_font->next;
+    }
+    free (collection.utf8);
+    free (collection.glyphs);
+    free (collection.to_latin_char);
+    free (collection.latin_to_subset_glyph_index);
+
+    return collection.status;
+}
+
+cairo_status_t
+_cairo_scaled_font_subsets_foreach_scaled (cairo_scaled_font_subsets_t		    *font_subsets,
+                                           cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+                                           void					    *closure)
+{
+    return _cairo_scaled_font_subsets_foreach_internal (font_subsets,
+                                                        font_subset_callback,
+                                                        closure,
+							CAIRO_SUBSETS_FOREACH_SCALED);
+}
+
+cairo_status_t
+_cairo_scaled_font_subsets_foreach_unscaled (cairo_scaled_font_subsets_t	    *font_subsets,
+                                           cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+                                           void					    *closure)
+{
+    return _cairo_scaled_font_subsets_foreach_internal (font_subsets,
+                                                        font_subset_callback,
+                                                        closure,
+							CAIRO_SUBSETS_FOREACH_UNSCALED);
+}
+
+cairo_status_t
+_cairo_scaled_font_subsets_foreach_user (cairo_scaled_font_subsets_t		  *font_subsets,
+					 cairo_scaled_font_subset_callback_func_t  font_subset_callback,
+					 void					  *closure)
+{
+    return _cairo_scaled_font_subsets_foreach_internal (font_subsets,
+                                                        font_subset_callback,
+                                                        closure,
+							CAIRO_SUBSETS_FOREACH_USER);
+}
+
+static cairo_bool_t
+_cairo_string_equal (const void *key_a, const void *key_b)
+{
+    const cairo_string_entry_t *a = key_a;
+    const cairo_string_entry_t *b = key_b;
+
+    if (strcmp (a->string, b->string) == 0)
+	return TRUE;
+    else
+	return FALSE;
+}
+
+#if DEBUG_SUBSETS
+
+static void
+dump_glyph (void *entry, void *closure)
+{
+    cairo_sub_font_glyph_t *glyph = entry;
+    char buf[10];
+    int i;
+
+    printf("    font_glyph_index: %ld\n", glyph->base.hash);
+    printf("      subset_id: %d\n", glyph->subset_id);
+    printf("      subset_glyph_index: %d\n", glyph->subset_glyph_index);
+    printf("      x_advance: %f\n", glyph->x_advance);
+    printf("      y_advance: %f\n", glyph->y_advance);
+    printf("      is_latin: %d\n", glyph->is_latin);
+    printf("      latin_character: '%c' (0x%02x)\n", glyph->latin_character, glyph->latin_character);
+    printf("      is_latin: %d\n", glyph->is_latin);
+    printf("      is_mapped: %d\n", glyph->is_mapped);
+    printf("      unicode: U+%04x\n", glyph->unicode);
+    memset(buf, 0, sizeof(buf));
+    memcpy(buf, glyph->utf8, glyph->utf8_len);
+    printf("      utf8: '%s'\n", buf);
+    printf("      utf8 (hex):");
+    for (i = 0; i < glyph->utf8_len; i++)
+	printf(" 0x%02x", glyph->utf8[0]);
+    printf("\n\n");
+}
+
+static void
+dump_subfont (cairo_sub_font_t *sub_font)
+{
+    while (sub_font) {
+	printf("    font_id: %d\n", sub_font->font_id);
+	printf("    current_subset: %d\n", sub_font->current_subset);
+	printf("    is_scaled: %d\n", sub_font->is_scaled);
+	printf("    is_composite: %d\n", sub_font->is_composite);
+	printf("    is_user: %d\n", sub_font->is_user);
+	printf("    use_latin_subset: %d\n", sub_font->use_latin_subset);
+	printf("    reserve_notdef: %d\n", sub_font->reserve_notdef);
+	printf("    num_glyphs_in_current_subset: %d\n", sub_font->num_glyphs_in_current_subset);
+	printf("    num_glyphs_in_latin_subset: %d\n", sub_font->num_glyphs_in_latin_subset);
+	printf("    max_glyphs_per_subset: %d\n\n", sub_font->max_glyphs_per_subset);
+
+	_cairo_hash_table_foreach (sub_font->sub_font_glyphs, dump_glyph, NULL);
+
+	printf("\n");
+	sub_font = sub_font->next;
+    }
+}
+
+void
+dump_scaled_font_subsets (cairo_scaled_font_subsets_t *font_subsets)
+{
+    printf("font subsets\n");
+    switch (font_subsets->type)
+    {
+	case CAIRO_SUBSETS_SCALED:
+	    printf("  type: CAIRO_SUBSETS_SCALED\n");
+	    break;
+	case CAIRO_SUBSETS_SIMPLE:
+	    printf("  type: CAIRO_SUBSETS_SIMPLE\n");
+	    break;
+	case CAIRO_SUBSETS_COMPOSITE:
+	    printf("  type: CAIRO_SUBSETS_COMPOSITE\n");
+	    break;
+    }
+    printf("  use_latin_subset: %d\n", font_subsets->use_latin_subset);
+    printf("  max_glyphs_per_unscaled_subset_used: %d\n", font_subsets->max_glyphs_per_unscaled_subset_used);
+    printf("  max_glyphs_per_scaled_subset_used: %d\n", font_subsets->max_glyphs_per_scaled_subset_used);
+    printf("  num_sub_fonts: %d\n\n", font_subsets->num_sub_fonts);
+
+    printf("  scaled subsets:\n");
+    dump_subfont (font_subsets->scaled_sub_fonts_list);
+
+    printf("\n  unscaled subsets:\n");
+    dump_subfont (font_subsets->unscaled_sub_fonts_list);
+}
+
+#endif
+
+
+static void
+_cairo_string_init_key (cairo_string_entry_t *key, char *s)
+{
+    unsigned long sum = 0;
+    unsigned int i;
+
+    for (i = 0; i < strlen(s); i++)
+        sum += s[i];
+    key->base.hash = sum;
+    key->string = s;
+}
+
+static cairo_status_t
+create_string_entry (char *s, cairo_string_entry_t **entry)
+{
+    *entry = _cairo_malloc (sizeof (cairo_string_entry_t));
+    if (unlikely (*entry == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_string_init_key (*entry, s);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_pluck_entry (void *entry, void *closure)
+{
+    _cairo_hash_table_remove (closure, entry);
+    free (entry);
+}
+
+cairo_int_status_t
+_cairo_scaled_font_subset_create_glyph_names (cairo_scaled_font_subset_t *subset)
+{
+    unsigned int i;
+    cairo_hash_table_t *names;
+    cairo_string_entry_t key, *entry;
+    char buf[30];
+    char *utf8;
+    uint16_t *utf16;
+    int utf16_len;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    names = _cairo_hash_table_create (_cairo_string_equal);
+    if (unlikely (names == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    subset->glyph_names = calloc (subset->num_glyphs, sizeof (char *));
+    if (unlikely (subset->glyph_names == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_HASH;
+    }
+
+    i = 0;
+    if (! subset->is_scaled) {
+	subset->glyph_names[0] = strdup (".notdef");
+	if (unlikely (subset->glyph_names[0] == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto CLEANUP_HASH;
+	}
+
+	status = create_string_entry (subset->glyph_names[0], &entry);
+	if (unlikely (status))
+	    goto CLEANUP_HASH;
+
+	status = _cairo_hash_table_insert (names, &entry->base);
+	if (unlikely (status)) {
+	    free (entry);
+	    goto CLEANUP_HASH;
+	}
+	i++;
+    }
+
+    for (; i < subset->num_glyphs; i++) {
+	utf8 = subset->utf8[i];
+	utf16 = NULL;
+	utf16_len = 0;
+	if (utf8 && *utf8) {
+	    status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &utf16_len);
+	    if (status == CAIRO_STATUS_INVALID_STRING) {
+		utf16 = NULL;
+		utf16_len = 0;
+	    } else if (unlikely (status)) {
+		goto CLEANUP_HASH;
+	    }
+	}
+
+	if (utf16_len == 1) {
+	    int ch = _cairo_unicode_to_winansi (utf16[0]);
+	    if (ch > 0 && _cairo_winansi_to_glyphname (ch)) {
+		strncpy (buf, _cairo_winansi_to_glyphname (ch), sizeof (buf));
+		buf[sizeof (buf)-1] = '\0';
+	    } else {
+		snprintf (buf, sizeof (buf), "uni%04X", (int) utf16[0]);
+	    }
+
+	    _cairo_string_init_key (&key, buf);
+	    entry = _cairo_hash_table_lookup (names, &key.base);
+	    if (entry != NULL)
+		snprintf (buf, sizeof (buf), "g%d", i);
+	} else {
+	    snprintf (buf, sizeof (buf), "g%d", i);
+	}
+	free (utf16);
+
+	subset->glyph_names[i] = strdup (buf);
+	if (unlikely (subset->glyph_names[i] == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto CLEANUP_HASH;
+	}
+
+	status = create_string_entry (subset->glyph_names[i], &entry);
+	if (unlikely (status))
+	    goto CLEANUP_HASH;
+
+	status = _cairo_hash_table_insert (names, &entry->base);
+	if (unlikely (status)) {
+	    free (entry);
+	    goto CLEANUP_HASH;
+	}
+    }
+
+CLEANUP_HASH:
+    _cairo_hash_table_foreach (names, _pluck_entry, names);
+    _cairo_hash_table_destroy (names);
+
+    if (likely (status == CAIRO_STATUS_SUCCESS))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (subset->glyph_names != NULL) {
+	for (i = 0; i < subset->num_glyphs; i++) {
+	    free (subset->glyph_names[i]);
+	}
+
+	free (subset->glyph_names);
+	subset->glyph_names = NULL;
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_escape_ps_name (char **ps_name)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    /* Ensure PS name is a valid PDF/PS name object. In PDF names are
+     * treated as UTF8 and non ASCII bytes, ' ', and '#' are encoded
+     * as '#' followed by 2 hex digits that encode the byte. By also
+     * encoding the characters in the reserved string we ensure the
+     * name is also PS compatible. */
+    if (*ps_name) {
+	static const char *reserved = "()<>[]{}/%#\\";
+	char buf[128]; /* max name length is 127 bytes */
+	char *src = *ps_name;
+	char *dst = buf;
+
+	while (*src && dst < buf + 127) {
+	    unsigned char c = *src;
+	    if (c < 0x21 || c > 0x7e || strchr (reserved, c)) {
+		if (dst + 4 > buf + 127)
+		    break;
+
+		snprintf (dst, 4, "#%02X", c);
+		src++;
+		dst += 3;
+	    } else {
+		*dst++ = *src++;
+	    }
+	}
+	*dst = 0;
+	free (*ps_name);
+	*ps_name = strdup (buf);
+	if (*ps_name == NULL) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    return status;
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-scaled-font.c b/libs/cairo-1.16.0/src/cairo-scaled-font.c
new file mode 100644
index 0000000..8dff57d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-scaled-font.c
@@ -0,0 +1,3202 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/*
+ * Copyright © 2005 Keith Packard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *      Keith Packard <keithp@keithp.com>
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Graydon Hoare <graydon@redhat.com>
+ *      Owen Taylor <otaylor@redhat.com>
+ *      Behdad Esfahbod <behdad@behdad.org>
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-pattern-private.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-surface-backend-private.h"
+
+/**
+ * SECTION:cairo-scaled-font
+ * @Title: cairo_scaled_font_t
+ * @Short_Description: Font face at particular size and options
+ * @See_Also: #cairo_font_face_t, #cairo_matrix_t, #cairo_font_options_t
+ *
+ * #cairo_scaled_font_t represents a realization of a font face at a particular
+ * size and transformation and a certain set of font options.
+ **/
+
+static uint32_t
+_cairo_scaled_font_compute_hash (cairo_scaled_font_t *scaled_font);
+
+/* Global Glyph Cache
+ *
+ * We maintain a global pool of glyphs split between all active fonts. This
+ * allows a heavily used individual font to cache more glyphs than we could
+ * manage if we used per-font glyph caches, but at the same time maintains
+ * fairness across all fonts and provides a cap on the maximum number of
+ * global glyphs.
+ *
+ * The glyphs are allocated in pages, which are capped in the global pool.
+ * Using pages means we can reduce the frequency at which we have to probe the
+ * global pool and ameliorates the memory allocation pressure.
+ */
+
+/* XXX: This number is arbitrary---we've never done any measurement of this. */
+#define MAX_GLYPH_PAGES_CACHED 512
+static cairo_cache_t cairo_scaled_glyph_page_cache;
+
+#define CAIRO_SCALED_GLYPH_PAGE_SIZE 32
+struct _cairo_scaled_glyph_page {
+    cairo_cache_entry_t cache_entry;
+    cairo_scaled_font_t *scaled_font;
+    cairo_list_t link;
+
+    unsigned int num_glyphs;
+    cairo_scaled_glyph_t glyphs[CAIRO_SCALED_GLYPH_PAGE_SIZE];
+};
+
+/*
+ *  Notes:
+ *
+ *  To store rasterizations of glyphs, we use an image surface and the
+ *  device offset to represent the glyph origin.
+ *
+ *  A device_transform converts from device space (a conceptual space) to
+ *  surface space.  For simple cases of translation only, it's called a
+ *  device_offset and is public API (cairo_surface_[gs]et_device_offset()).
+ *  A possibly better name for those functions could have been
+ *  cairo_surface_[gs]et_origin().  So, that's what they do: they set where
+ *  the device-space origin (0,0) is in the surface.  If the origin is inside
+ *  the surface, device_offset values are positive.  It may look like this:
+ *
+ *  Device space:
+ *        (-x,-y) <-- negative numbers
+ *           +----------------+
+ *           |      .         |
+ *           |      .         |
+ *           |......(0,0) <---|-- device-space origin
+ *           |                |
+ *           |                |
+ *           +----------------+
+ *                    (width-x,height-y)
+ *
+ *  Surface space:
+ *         (0,0) <-- surface-space origin
+ *           +---------------+
+ *           |      .        |
+ *           |      .        |
+ *           |......(x,y) <--|-- device_offset
+ *           |               |
+ *           |               |
+ *           +---------------+
+ *                     (width,height)
+ *
+ *  In other words: device_offset is the coordinates of the device-space
+ *  origin relative to the top-left of the surface.
+ *
+ *  We use device offsets in a couple of places:
+ *
+ *    - Public API: To let toolkits like Gtk+ give user a surface that
+ *      only represents part of the final destination (say, the expose
+ *      area), but has the same device space as the destination.  In these
+ *      cases device_offset is typically negative.  Example:
+ *
+ *           application window
+ *           +---------------+
+ *           |      .        |
+ *           | (x,y).        |
+ *           |......+---+    |
+ *           |      |   | <--|-- expose area
+ *           |      +---+    |
+ *           +---------------+
+ *
+ *      In this case, the user of cairo API can set the device_space on
+ *      the expose area to (-x,-y) to move the device space origin to that
+ *      of the application window, such that drawing in the expose area
+ *      surface and painting it in the application window has the same
+ *      effect as drawing in the application window directly.  Gtk+ has
+ *      been using this feature.
+ *
+ *    - Glyph surfaces: In most font rendering systems, glyph surfaces
+ *      have an origin at (0,0) and a bounding box that is typically
+ *      represented as (x_bearing,y_bearing,width,height).  Depending on
+ *      which way y progresses in the system, y_bearing may typically be
+ *      negative (for systems similar to cairo, with origin at top left),
+ *      or be positive (in systems like PDF with origin at bottom left).
+ *      No matter which is the case, it is important to note that
+ *      (x_bearing,y_bearing) is the coordinates of top-left of the glyph
+ *      relative to the glyph origin.  That is, for example:
+ *
+ *      Scaled-glyph space:
+ *
+ *        (x_bearing,y_bearing) <-- negative numbers
+ *           +----------------+
+ *           |      .         |
+ *           |      .         |
+ *           |......(0,0) <---|-- glyph origin
+ *           |                |
+ *           |                |
+ *           +----------------+
+ *                    (width+x_bearing,height+y_bearing)
+ *
+ *      Note the similarity of the origin to the device space.  That is
+ *      exactly how we use the device_offset to represent scaled glyphs:
+ *      to use the device-space origin as the glyph origin.
+ *
+ *  Now compare the scaled-glyph space to device-space and surface-space
+ *  and convince yourself that:
+ *
+ *	(x_bearing,y_bearing) = (-x,-y) = - device_offset
+ *
+ *  That's right.  If you are not convinced yet, contrast the definition
+ *  of the two:
+ *
+ *	"(x_bearing,y_bearing) is the coordinates of top-left of the
+ *	 glyph relative to the glyph origin."
+ *
+ *	"In other words: device_offset is the coordinates of the
+ *	 device-space origin relative to the top-left of the surface."
+ *
+ *  and note that glyph origin = device-space origin.
+ */
+
+static void
+_cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font);
+
+static void
+_cairo_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
+			  cairo_scaled_glyph_t *scaled_glyph)
+{
+    while (! cairo_list_is_empty (&scaled_glyph->dev_privates)) {
+	cairo_scaled_glyph_private_t *private =
+	    cairo_list_first_entry (&scaled_glyph->dev_privates,
+				    cairo_scaled_glyph_private_t,
+				    link);
+	private->destroy (private, scaled_glyph, scaled_font);
+    }
+
+    _cairo_image_scaled_glyph_fini (scaled_font, scaled_glyph);
+
+    if (scaled_glyph->surface != NULL)
+	cairo_surface_destroy (&scaled_glyph->surface->base);
+
+    if (scaled_glyph->path != NULL)
+	_cairo_path_fixed_destroy (scaled_glyph->path);
+
+    if (scaled_glyph->recording_surface != NULL) {
+	cairo_surface_finish (scaled_glyph->recording_surface);
+	cairo_surface_destroy (scaled_glyph->recording_surface);
+    }
+
+    if (scaled_glyph->color_surface != NULL)
+	cairo_surface_destroy (&scaled_glyph->color_surface->base);
+}
+
+#define ZOMBIE 0
+static const cairo_scaled_font_t _cairo_scaled_font_nil = {
+    { ZOMBIE },			/* hash_entry */
+    CAIRO_STATUS_NO_MEMORY,	/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },		/* user_data */
+    NULL,			/* original_font_face */
+    NULL,			/* font_face */
+    { 1., 0., 0., 1., 0, 0},	/* font_matrix */
+    { 1., 0., 0., 1., 0, 0},	/* ctm */
+    { CAIRO_ANTIALIAS_DEFAULT,	/* options */
+      CAIRO_SUBPIXEL_ORDER_DEFAULT,
+      CAIRO_HINT_STYLE_DEFAULT,
+      CAIRO_HINT_METRICS_DEFAULT} ,
+    FALSE,			/* placeholder */
+    FALSE,			/* holdover */
+    TRUE,			/* finished */
+    { 1., 0., 0., 1., 0, 0},	/* scale */
+    { 1., 0., 0., 1., 0, 0},	/* scale_inverse */
+    1.,				/* max_scale */
+    { 0., 0., 0., 0., 0. },	/* extents */
+    { 0., 0., 0., 0., 0. },	/* fs_extents */
+    CAIRO_MUTEX_NIL_INITIALIZER,/* mutex */
+    NULL,			/* glyphs */
+    { NULL, NULL },		/* pages */
+    FALSE,			/* cache_frozen */
+    FALSE,			/* global_cache_frozen */
+    { NULL, NULL },		/* privates */
+    NULL			/* backend */
+};
+
+/**
+ * _cairo_scaled_font_set_error:
+ * @scaled_font: a scaled_font
+ * @status: a status value indicating an error
+ *
+ * Atomically sets scaled_font->status to @status and calls _cairo_error;
+ * Does nothing if status is %CAIRO_STATUS_SUCCESS.
+ *
+ * All assignments of an error status to scaled_font->status should happen
+ * through _cairo_scaled_font_set_error(). Note that due to the nature of
+ * the atomic operation, it is not safe to call this function on the nil
+ * objects.
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ *
+ * Return value: the error status.
+ **/
+cairo_status_t
+_cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font,
+			      cairo_status_t status)
+{
+    if (status == CAIRO_STATUS_SUCCESS)
+	return status;
+
+    /* Don't overwrite an existing error. This preserves the first
+     * error, which is the most significant. */
+    _cairo_status_set_error (&scaled_font->status, status);
+
+    return _cairo_error (status);
+}
+
+/**
+ * cairo_scaled_font_get_type:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * This function returns the type of the backend used to create
+ * a scaled font. See #cairo_font_type_t for available types.
+ * However, this function never returns %CAIRO_FONT_TYPE_TOY.
+ *
+ * Return value: The type of @scaled_font.
+ *
+ * Since: 1.2
+ **/
+cairo_font_type_t
+cairo_scaled_font_get_type (cairo_scaled_font_t *scaled_font)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count))
+	return CAIRO_FONT_TYPE_TOY;
+
+    return scaled_font->backend->type;
+}
+
+/**
+ * cairo_scaled_font_status:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Checks whether an error has previously occurred for this
+ * scaled_font.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or another error such as
+ *   %CAIRO_STATUS_NO_MEMORY.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_scaled_font_status (cairo_scaled_font_t *scaled_font)
+{
+    return scaled_font->status;
+}
+slim_hidden_def (cairo_scaled_font_status);
+
+/* Here we keep a unique mapping from
+ * font_face/matrix/ctm/font_options => #cairo_scaled_font_t.
+ *
+ * Here are the things that we want to map:
+ *
+ *  a) All otherwise referenced #cairo_scaled_font_t's
+ *  b) Some number of not otherwise referenced #cairo_scaled_font_t's
+ *
+ * The implementation uses a hash table which covers (a)
+ * completely. Then, for (b) we have an array of otherwise
+ * unreferenced fonts (holdovers) which are expired in
+ * least-recently-used order.
+ *
+ * The cairo_scaled_font_create() code gets to treat this like a regular
+ * hash table. All of the magic for the little holdover cache is in
+ * cairo_scaled_font_reference() and cairo_scaled_font_destroy().
+ */
+
+/* This defines the size of the holdover array ... that is, the number
+ * of scaled fonts we keep around even when not otherwise referenced
+ */
+#define CAIRO_SCALED_FONT_MAX_HOLDOVERS 256
+
+typedef struct _cairo_scaled_font_map {
+    cairo_scaled_font_t *mru_scaled_font;
+    cairo_hash_table_t *hash_table;
+    cairo_scaled_font_t *holdovers[CAIRO_SCALED_FONT_MAX_HOLDOVERS];
+    int num_holdovers;
+} cairo_scaled_font_map_t;
+
+static cairo_scaled_font_map_t *cairo_scaled_font_map;
+
+static int
+_cairo_scaled_font_keys_equal (const void *abstract_key_a, const void *abstract_key_b);
+
+static cairo_scaled_font_map_t *
+_cairo_scaled_font_map_lock (void)
+{
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+
+    if (cairo_scaled_font_map == NULL) {
+	cairo_scaled_font_map = _cairo_malloc (sizeof (cairo_scaled_font_map_t));
+	if (unlikely (cairo_scaled_font_map == NULL))
+	    goto CLEANUP_MUTEX_LOCK;
+
+	cairo_scaled_font_map->mru_scaled_font = NULL;
+	cairo_scaled_font_map->hash_table =
+	    _cairo_hash_table_create (_cairo_scaled_font_keys_equal);
+
+	if (unlikely (cairo_scaled_font_map->hash_table == NULL))
+	    goto CLEANUP_SCALED_FONT_MAP;
+
+	cairo_scaled_font_map->num_holdovers = 0;
+    }
+
+    return cairo_scaled_font_map;
+
+ CLEANUP_SCALED_FONT_MAP:
+    free (cairo_scaled_font_map);
+    cairo_scaled_font_map = NULL;
+ CLEANUP_MUTEX_LOCK:
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+    return NULL;
+}
+
+static void
+_cairo_scaled_font_map_unlock (void)
+{
+   CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+}
+
+void
+_cairo_scaled_font_map_destroy (void)
+{
+    cairo_scaled_font_map_t *font_map;
+    cairo_scaled_font_t *scaled_font;
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+
+    font_map = cairo_scaled_font_map;
+    if (unlikely (font_map == NULL)) {
+        goto CLEANUP_MUTEX_LOCK;
+    }
+
+    scaled_font = font_map->mru_scaled_font;
+    if (scaled_font != NULL) {
+	CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+	cairo_scaled_font_destroy (scaled_font);
+	CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+    }
+
+    /* remove scaled_fonts starting from the end so that font_map->holdovers
+     * is always in a consistent state when we release the mutex. */
+    while (font_map->num_holdovers) {
+	scaled_font = font_map->holdovers[font_map->num_holdovers-1];
+	assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count));
+	_cairo_hash_table_remove (font_map->hash_table,
+				  &scaled_font->hash_entry);
+
+	font_map->num_holdovers--;
+
+	/* This releases the font_map lock to avoid the possibility of a
+	 * recursive deadlock when the scaled font destroy closure gets
+	 * called
+	 */
+	_cairo_scaled_font_fini (scaled_font);
+
+	free (scaled_font);
+    }
+
+    _cairo_hash_table_destroy (font_map->hash_table);
+
+    free (cairo_scaled_font_map);
+    cairo_scaled_font_map = NULL;
+
+ CLEANUP_MUTEX_LOCK:
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+}
+
+static void
+_cairo_scaled_glyph_page_destroy (cairo_scaled_font_t *scaled_font,
+				  cairo_scaled_glyph_page_t *page)
+{
+    unsigned int n;
+
+    assert (!scaled_font->cache_frozen);
+    assert (!scaled_font->global_cache_frozen);
+
+    for (n = 0; n < page->num_glyphs; n++) {
+	_cairo_hash_table_remove (scaled_font->glyphs,
+				  &page->glyphs[n].hash_entry);
+	_cairo_scaled_glyph_fini (scaled_font, &page->glyphs[n]);
+    }
+
+    cairo_list_del (&page->link);
+    free (page);
+}
+
+static void
+_cairo_scaled_glyph_page_pluck (void *closure)
+{
+    cairo_scaled_glyph_page_t *page = closure;
+    cairo_scaled_font_t *scaled_font;
+
+    assert (! cairo_list_is_empty (&page->link));
+
+    scaled_font = page->scaled_font;
+
+    CAIRO_MUTEX_LOCK (scaled_font->mutex);
+    _cairo_scaled_glyph_page_destroy (scaled_font, page);
+    CAIRO_MUTEX_UNLOCK (scaled_font->mutex);
+}
+
+/* If a scaled font wants to unlock the font map while still being
+ * created (needed for user-fonts), we need to take extra care not
+ * ending up with multiple identical scaled fonts being created.
+ *
+ * What we do is, we create a fake identical scaled font, and mark
+ * it as placeholder, lock its mutex, and insert that in the fontmap
+ * hash table.  This makes other code trying to create an identical
+ * scaled font to just wait and retry.
+ *
+ * The reason we have to create a fake scaled font instead of just using
+ * scaled_font is for lifecycle management: we need to (or rather,
+ * other code needs to) reference the scaled_font in the hash table.
+ * We can't do that on the input scaled_font as it may be freed by
+ * font backend upon error.
+ */
+
+cairo_status_t
+_cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font)
+{
+    cairo_status_t status;
+    cairo_scaled_font_t *placeholder_scaled_font;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (_cairo_scaled_font_map_mutex));
+
+    status = scaled_font->status;
+    if (unlikely (status))
+	return status;
+
+    placeholder_scaled_font = _cairo_malloc (sizeof (cairo_scaled_font_t));
+    if (unlikely (placeholder_scaled_font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* full initialization is wasteful, but who cares... */
+    status = _cairo_scaled_font_init (placeholder_scaled_font,
+				      scaled_font->font_face,
+				      &scaled_font->font_matrix,
+				      &scaled_font->ctm,
+				      &scaled_font->options,
+				      NULL);
+    if (unlikely (status))
+	goto FREE_PLACEHOLDER;
+
+    placeholder_scaled_font->placeholder = TRUE;
+
+    placeholder_scaled_font->hash_entry.hash
+	= _cairo_scaled_font_compute_hash (placeholder_scaled_font);
+    status = _cairo_hash_table_insert (cairo_scaled_font_map->hash_table,
+				       &placeholder_scaled_font->hash_entry);
+    if (unlikely (status))
+	goto FINI_PLACEHOLDER;
+
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+    CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex);
+
+    return CAIRO_STATUS_SUCCESS;
+
+  FINI_PLACEHOLDER:
+    _cairo_scaled_font_fini_internal (placeholder_scaled_font);
+  FREE_PLACEHOLDER:
+    free (placeholder_scaled_font);
+
+    return _cairo_scaled_font_set_error (scaled_font, status);
+}
+
+void
+_cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font)
+{
+    cairo_scaled_font_t *placeholder_scaled_font;
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+
+    /* temporary hash value to match the placeholder */
+    scaled_font->hash_entry.hash
+	= _cairo_scaled_font_compute_hash (scaled_font);
+    placeholder_scaled_font =
+	_cairo_hash_table_lookup (cairo_scaled_font_map->hash_table,
+				  &scaled_font->hash_entry);
+    assert (placeholder_scaled_font != NULL);
+    assert (placeholder_scaled_font->placeholder);
+    assert (CAIRO_MUTEX_IS_LOCKED (placeholder_scaled_font->mutex));
+
+    _cairo_hash_table_remove (cairo_scaled_font_map->hash_table,
+			      &placeholder_scaled_font->hash_entry);
+
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+
+    CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex);
+    cairo_scaled_font_destroy (placeholder_scaled_font);
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+}
+
+static void
+_cairo_scaled_font_placeholder_wait_for_creation_to_finish (cairo_scaled_font_t *placeholder_scaled_font)
+{
+    /* reference the place holder so it doesn't go away */
+    cairo_scaled_font_reference (placeholder_scaled_font);
+
+    /* now unlock the fontmap mutex so creation has a chance to finish */
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+
+    /* wait on placeholder mutex until we are awaken */
+    CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex);
+
+    /* ok, creation done.  just clean up and back out */
+    CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex);
+    cairo_scaled_font_destroy (placeholder_scaled_font);
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+}
+
+/* Fowler / Noll / Vo (FNV) Hash (http://www.isthe.com/chongo/tech/comp/fnv/)
+ *
+ * Not necessarily better than a lot of other hashes, but should be OK, and
+ * well tested with binary data.
+ */
+
+#define FNV_32_PRIME ((uint32_t)0x01000193)
+#define FNV1_32_INIT ((uint32_t)0x811c9dc5)
+
+static uint32_t
+_hash_matrix_fnv (const cairo_matrix_t	*matrix,
+		  uint32_t		 hval)
+{
+    const uint8_t *buffer = (const uint8_t *) matrix;
+    int len = sizeof (cairo_matrix_t);
+    do {
+	hval *= FNV_32_PRIME;
+	hval ^= *buffer++;
+    } while (--len);
+
+    return hval;
+}
+
+static uint32_t
+_hash_mix_bits (uint32_t hash)
+{
+    hash += hash << 12;
+    hash ^= hash >> 7;
+    hash += hash << 3;
+    hash ^= hash >> 17;
+    hash += hash << 5;
+    return hash;
+}
+
+static uint32_t
+_cairo_scaled_font_compute_hash (cairo_scaled_font_t *scaled_font)
+{
+    uint32_t hash = FNV1_32_INIT;
+
+    /* We do a bytewise hash on the font matrices */
+    hash = _hash_matrix_fnv (&scaled_font->font_matrix, hash);
+    hash = _hash_matrix_fnv (&scaled_font->ctm, hash);
+    hash = _hash_mix_bits (hash);
+
+    hash ^= (unsigned long) scaled_font->original_font_face;
+    hash ^= cairo_font_options_hash (&scaled_font->options);
+
+    /* final mixing of bits */
+    hash = _hash_mix_bits (hash);
+    assert (hash != ZOMBIE);
+
+    return hash;
+}
+
+static void
+_cairo_scaled_font_init_key (cairo_scaled_font_t        *scaled_font,
+			     cairo_font_face_t	        *font_face,
+			     const cairo_matrix_t       *font_matrix,
+			     const cairo_matrix_t       *ctm,
+			     const cairo_font_options_t *options)
+{
+    scaled_font->status = CAIRO_STATUS_SUCCESS;
+    scaled_font->placeholder = FALSE;
+    scaled_font->font_face = font_face;
+    scaled_font->original_font_face = font_face;
+    scaled_font->font_matrix = *font_matrix;
+    scaled_font->ctm = *ctm;
+    /* ignore translation values in the ctm */
+    scaled_font->ctm.x0 = 0.;
+    scaled_font->ctm.y0 = 0.;
+    _cairo_font_options_init_copy (&scaled_font->options, options);
+
+    scaled_font->hash_entry.hash =
+	_cairo_scaled_font_compute_hash (scaled_font);
+}
+
+static cairo_bool_t
+_cairo_scaled_font_keys_equal (const void *abstract_key_a,
+			       const void *abstract_key_b)
+{
+    const cairo_scaled_font_t *key_a = abstract_key_a;
+    const cairo_scaled_font_t *key_b = abstract_key_b;
+
+    return key_a->original_font_face == key_b->original_font_face &&
+	    memcmp ((unsigned char *)(&key_a->font_matrix.xx),
+		    (unsigned char *)(&key_b->font_matrix.xx),
+		    sizeof(cairo_matrix_t)) == 0 &&
+	    memcmp ((unsigned char *)(&key_a->ctm.xx),
+		    (unsigned char *)(&key_b->ctm.xx),
+		    sizeof(cairo_matrix_t)) == 0 &&
+	    cairo_font_options_equal (&key_a->options, &key_b->options);
+}
+
+static cairo_bool_t
+_cairo_scaled_font_matches (const cairo_scaled_font_t *scaled_font,
+	                    const cairo_font_face_t *font_face,
+			    const cairo_matrix_t *font_matrix,
+			    const cairo_matrix_t *ctm,
+			    const cairo_font_options_t *options)
+{
+    return scaled_font->original_font_face == font_face &&
+	    memcmp ((unsigned char *)(&scaled_font->font_matrix.xx),
+		    (unsigned char *)(&font_matrix->xx),
+		    sizeof(cairo_matrix_t)) == 0 &&
+	    memcmp ((unsigned char *)(&scaled_font->ctm.xx),
+		    (unsigned char *)(&ctm->xx),
+		    sizeof(cairo_matrix_t)) == 0 &&
+	    cairo_font_options_equal (&scaled_font->options, options);
+}
+
+/*
+ * Basic #cairo_scaled_font_t object management
+ */
+
+cairo_status_t
+_cairo_scaled_font_init (cairo_scaled_font_t               *scaled_font,
+			 cairo_font_face_t		   *font_face,
+			 const cairo_matrix_t              *font_matrix,
+			 const cairo_matrix_t              *ctm,
+			 const cairo_font_options_t	   *options,
+			 const cairo_scaled_font_backend_t *backend)
+{
+    cairo_status_t status;
+
+    status = cairo_font_options_status ((cairo_font_options_t *) options);
+    if (unlikely (status))
+	return status;
+
+    scaled_font->status = CAIRO_STATUS_SUCCESS;
+    scaled_font->placeholder = FALSE;
+    scaled_font->font_face = font_face;
+    scaled_font->original_font_face = font_face;
+    scaled_font->font_matrix = *font_matrix;
+    scaled_font->ctm = *ctm;
+    /* ignore translation values in the ctm */
+    scaled_font->ctm.x0 = 0.;
+    scaled_font->ctm.y0 = 0.;
+    _cairo_font_options_init_copy (&scaled_font->options, options);
+
+    cairo_matrix_multiply (&scaled_font->scale,
+			   &scaled_font->font_matrix,
+			   &scaled_font->ctm);
+
+    scaled_font->max_scale = MAX (fabs (scaled_font->scale.xx) + fabs (scaled_font->scale.xy),
+				  fabs (scaled_font->scale.yx) + fabs (scaled_font->scale.yy));
+    scaled_font->scale_inverse = scaled_font->scale;
+    status = cairo_matrix_invert (&scaled_font->scale_inverse);
+    if (unlikely (status)) {
+	/* If the font scale matrix is rank 0, just using an all-zero inverse matrix
+	 * makes everything work correctly.  This make font size 0 work without
+	 * producing an error.
+	 *
+	 * FIXME:  If the scale is rank 1, we still go into error mode.  But then
+	 * again, that's what we do everywhere in cairo.
+	 *
+	 * Also, the check for == 0. below may be too harsh...
+	 */
+        if (_cairo_matrix_is_scale_0 (&scaled_font->scale)) {
+	    cairo_matrix_init (&scaled_font->scale_inverse,
+			       0, 0, 0, 0,
+			       -scaled_font->scale.x0,
+			       -scaled_font->scale.y0);
+	} else
+	    return status;
+    }
+
+    scaled_font->glyphs = _cairo_hash_table_create (NULL);
+    if (unlikely (scaled_font->glyphs == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cairo_list_init (&scaled_font->glyph_pages);
+    scaled_font->cache_frozen = FALSE;
+    scaled_font->global_cache_frozen = FALSE;
+
+    scaled_font->holdover = FALSE;
+    scaled_font->finished = FALSE;
+
+    CAIRO_REFERENCE_COUNT_INIT (&scaled_font->ref_count, 1);
+
+    _cairo_user_data_array_init (&scaled_font->user_data);
+
+    cairo_font_face_reference (font_face);
+    scaled_font->original_font_face = NULL;
+
+    CAIRO_MUTEX_INIT (scaled_font->mutex);
+
+    cairo_list_init (&scaled_font->dev_privates);
+
+    scaled_font->backend = backend;
+    cairo_list_init (&scaled_font->link);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font)
+{
+    /* ensure we do not modify an error object */
+    assert (scaled_font->status == CAIRO_STATUS_SUCCESS);
+
+    CAIRO_MUTEX_LOCK (scaled_font->mutex);
+    scaled_font->cache_frozen = TRUE;
+}
+
+void
+_cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font)
+{
+    assert (scaled_font->cache_frozen);
+
+    if (scaled_font->global_cache_frozen) {
+	CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex);
+	_cairo_cache_thaw (&cairo_scaled_glyph_page_cache);
+	CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex);
+	scaled_font->global_cache_frozen = FALSE;
+    }
+
+    scaled_font->cache_frozen = FALSE;
+    CAIRO_MUTEX_UNLOCK (scaled_font->mutex);
+}
+
+void
+_cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font)
+{
+    cairo_scaled_glyph_page_t *page;
+
+    CAIRO_MUTEX_LOCK (scaled_font->mutex);
+    assert (! scaled_font->cache_frozen);
+    assert (! scaled_font->global_cache_frozen);
+    CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex);
+
+    cairo_list_foreach_entry (page,
+			      cairo_scaled_glyph_page_t,
+			      &scaled_font->glyph_pages,
+			      link) {
+	cairo_scaled_glyph_page_cache.size -= page->cache_entry.size;
+	_cairo_hash_table_remove (cairo_scaled_glyph_page_cache.hash_table,
+				  (cairo_hash_entry_t *) &page->cache_entry);
+    }
+
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex);
+
+    /* Destroy scaled_font's pages while holding its lock only, and not the
+     * global page cache lock. The destructor can cause us to recurse and
+     * end up back here for a different scaled_font. */
+
+    while (! cairo_list_is_empty (&scaled_font->glyph_pages)) {
+	page = cairo_list_first_entry (&scaled_font->glyph_pages,
+				       cairo_scaled_glyph_page_t,
+				       link);
+	_cairo_scaled_glyph_page_destroy (scaled_font, page);
+    }
+
+    CAIRO_MUTEX_UNLOCK (scaled_font->mutex);
+}
+
+cairo_status_t
+_cairo_scaled_font_set_metrics (cairo_scaled_font_t	    *scaled_font,
+				cairo_font_extents_t	    *fs_metrics)
+{
+    cairo_status_t status;
+    double  font_scale_x, font_scale_y;
+
+    scaled_font->fs_extents = *fs_metrics;
+
+    status = _cairo_matrix_compute_basis_scale_factors (&scaled_font->font_matrix,
+						  &font_scale_x, &font_scale_y,
+						  1);
+    if (unlikely (status))
+	return status;
+
+    /*
+     * The font responded in unscaled units, scale by the font
+     * matrix scale factors to get to user space
+     */
+
+    scaled_font->extents.ascent = fs_metrics->ascent * font_scale_y;
+    scaled_font->extents.descent = fs_metrics->descent * font_scale_y;
+    scaled_font->extents.height = fs_metrics->height * font_scale_y;
+    scaled_font->extents.max_x_advance = fs_metrics->max_x_advance * font_scale_x;
+    scaled_font->extents.max_y_advance = fs_metrics->max_y_advance * font_scale_y;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font)
+{
+    assert (! scaled_font->cache_frozen);
+    assert (! scaled_font->global_cache_frozen);
+    scaled_font->finished = TRUE;
+
+    _cairo_scaled_font_reset_cache (scaled_font);
+    _cairo_hash_table_destroy (scaled_font->glyphs);
+
+    cairo_font_face_destroy (scaled_font->font_face);
+    cairo_font_face_destroy (scaled_font->original_font_face);
+
+    CAIRO_MUTEX_FINI (scaled_font->mutex);
+
+    while (! cairo_list_is_empty (&scaled_font->dev_privates)) {
+	cairo_scaled_font_private_t *private =
+	    cairo_list_first_entry (&scaled_font->dev_privates,
+				    cairo_scaled_font_private_t,
+				    link);
+	private->destroy (private, scaled_font);
+    }
+
+    if (scaled_font->backend != NULL && scaled_font->backend->fini != NULL)
+	scaled_font->backend->fini (scaled_font);
+
+    _cairo_user_data_array_fini (&scaled_font->user_data);
+}
+
+void
+_cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font)
+{
+    /* Release the lock to avoid the possibility of a recursive
+     * deadlock when the scaled font destroy closure gets called. */
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex);
+    _cairo_scaled_font_fini_internal (scaled_font);
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex);
+}
+
+void
+_cairo_scaled_font_attach_private (cairo_scaled_font_t *scaled_font,
+				   cairo_scaled_font_private_t *private,
+				   const void *key,
+				   void (*destroy) (cairo_scaled_font_private_t *,
+						    cairo_scaled_font_t *))
+{
+    private->key = key;
+    private->destroy = destroy;
+    cairo_list_add (&private->link, &scaled_font->dev_privates);
+}
+
+cairo_scaled_font_private_t *
+_cairo_scaled_font_find_private (cairo_scaled_font_t *scaled_font,
+				 const void *key)
+{
+    cairo_scaled_font_private_t *priv;
+
+    cairo_list_foreach_entry (priv, cairo_scaled_font_private_t,
+			      &scaled_font->dev_privates, link)
+    {
+	if (priv->key == key) {
+	    if (priv->link.prev != &scaled_font->dev_privates)
+		cairo_list_move (&priv->link, &scaled_font->dev_privates);
+	    return priv;
+	}
+    }
+
+    return NULL;
+}
+
+void
+_cairo_scaled_glyph_attach_private (cairo_scaled_glyph_t *scaled_glyph,
+				   cairo_scaled_glyph_private_t *private,
+				   const void *key,
+				   void (*destroy) (cairo_scaled_glyph_private_t *,
+						    cairo_scaled_glyph_t *,
+						    cairo_scaled_font_t *))
+{
+    private->key = key;
+    private->destroy = destroy;
+    cairo_list_add (&private->link, &scaled_glyph->dev_privates);
+}
+
+cairo_scaled_glyph_private_t *
+_cairo_scaled_glyph_find_private (cairo_scaled_glyph_t *scaled_glyph,
+				 const void *key)
+{
+    cairo_scaled_glyph_private_t *priv;
+
+    cairo_list_foreach_entry (priv, cairo_scaled_glyph_private_t,
+			      &scaled_glyph->dev_privates, link)
+    {
+	if (priv->key == key) {
+	    if (priv->link.prev != &scaled_glyph->dev_privates)
+		cairo_list_move (&priv->link, &scaled_glyph->dev_privates);
+	    return priv;
+	}
+    }
+
+    return NULL;
+}
+
+/**
+ * cairo_scaled_font_create:
+ * @font_face: a #cairo_font_face_t
+ * @font_matrix: font space to user space transformation matrix for the
+ *       font. In the simplest case of a N point font, this matrix is
+ *       just a scale by N, but it can also be used to shear the font
+ *       or stretch it unequally along the two axes. See
+ *       cairo_set_font_matrix().
+ * @ctm: user to device transformation matrix with which the font will
+ *       be used.
+ * @options: options to use when getting metrics for the font and
+ *           rendering with it.
+ *
+ * Creates a #cairo_scaled_font_t object from a font face and matrices that
+ * describe the size of the font and the environment in which it will
+ * be used.
+ *
+ * Return value: a newly created #cairo_scaled_font_t. Destroy with
+ *  cairo_scaled_font_destroy()
+ *
+ * Since: 1.0
+ **/
+cairo_scaled_font_t *
+cairo_scaled_font_create (cairo_font_face_t          *font_face,
+			  const cairo_matrix_t       *font_matrix,
+			  const cairo_matrix_t       *ctm,
+			  const cairo_font_options_t *options)
+{
+    cairo_status_t status;
+    cairo_scaled_font_map_t *font_map;
+    cairo_font_face_t *original_font_face = font_face;
+    cairo_scaled_font_t key, *old = NULL, *scaled_font = NULL, *dead = NULL;
+    double det;
+
+    status = font_face->status;
+    if (unlikely (status))
+	return _cairo_scaled_font_create_in_error (status);
+
+    det = _cairo_matrix_compute_determinant (font_matrix);
+    if (! ISFINITE (det))
+	return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX));
+
+    det = _cairo_matrix_compute_determinant (ctm);
+    if (! ISFINITE (det))
+	return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX));
+
+    status = cairo_font_options_status ((cairo_font_options_t *) options);
+    if (unlikely (status))
+	return _cairo_scaled_font_create_in_error (status);
+
+    /* Note that degenerate ctm or font_matrix *are* allowed.
+     * We want to support a font size of 0. */
+
+    font_map = _cairo_scaled_font_map_lock ();
+    if (unlikely (font_map == NULL))
+	return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    scaled_font = font_map->mru_scaled_font;
+    if (scaled_font != NULL &&
+	_cairo_scaled_font_matches (scaled_font,
+	                            font_face, font_matrix, ctm, options))
+    {
+	assert (scaled_font->hash_entry.hash != ZOMBIE);
+	assert (! scaled_font->placeholder);
+
+	if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)) {
+	    /* We increment the reference count manually here, (rather
+	     * than calling into cairo_scaled_font_reference), since we
+	     * must modify the reference count while our lock is still
+	     * held. */
+	    _cairo_reference_count_inc (&scaled_font->ref_count);
+	    _cairo_scaled_font_map_unlock ();
+	    return scaled_font;
+	}
+
+	/* the font has been put into an error status - abandon the cache */
+	_cairo_hash_table_remove (font_map->hash_table,
+				  &scaled_font->hash_entry);
+	scaled_font->hash_entry.hash = ZOMBIE;
+	dead = scaled_font;
+	font_map->mru_scaled_font = NULL;
+    }
+
+    _cairo_scaled_font_init_key (&key, font_face, font_matrix, ctm, options);
+
+    while ((scaled_font = _cairo_hash_table_lookup (font_map->hash_table,
+						    &key.hash_entry)))
+    {
+	if (! scaled_font->placeholder)
+	    break;
+
+	/* If the scaled font is being created (happens for user-font),
+	 * just wait until it's done, then retry */
+	_cairo_scaled_font_placeholder_wait_for_creation_to_finish (scaled_font);
+    }
+
+    if (scaled_font != NULL) {
+	/* If the original reference count is 0, then this font must have
+	 * been found in font_map->holdovers, (which means this caching is
+	 * actually working). So now we remove it from the holdovers
+	 * array, unless we caught the font in the middle of destruction.
+	 */
+	if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)) {
+	    if (scaled_font->holdover) {
+		int i;
+
+		for (i = 0; i < font_map->num_holdovers; i++) {
+		    if (font_map->holdovers[i] == scaled_font) {
+			font_map->num_holdovers--;
+			memmove (&font_map->holdovers[i],
+				 &font_map->holdovers[i+1],
+				 (font_map->num_holdovers - i) * sizeof (cairo_scaled_font_t*));
+			break;
+		    }
+		}
+
+		scaled_font->holdover = FALSE;
+	    }
+
+	    /* reset any error status */
+	    scaled_font->status = CAIRO_STATUS_SUCCESS;
+	}
+
+	if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)) {
+	    /* We increment the reference count manually here, (rather
+	     * than calling into cairo_scaled_font_reference), since we
+	     * must modify the reference count while our lock is still
+	     * held. */
+
+	    old = font_map->mru_scaled_font;
+	    font_map->mru_scaled_font = scaled_font;
+	    /* increment reference count for the mru cache */
+	    _cairo_reference_count_inc (&scaled_font->ref_count);
+	    /* and increment for the returned reference */
+	    _cairo_reference_count_inc (&scaled_font->ref_count);
+	    _cairo_scaled_font_map_unlock ();
+
+	    cairo_scaled_font_destroy (old);
+	    if (font_face != original_font_face)
+		cairo_font_face_destroy (font_face);
+
+	    return scaled_font;
+	}
+
+	/* the font has been put into an error status - abandon the cache */
+	_cairo_hash_table_remove (font_map->hash_table,
+				  &scaled_font->hash_entry);
+	scaled_font->hash_entry.hash = ZOMBIE;
+    }
+
+
+    /* Otherwise create it and insert it into the hash table. */
+    if (font_face->backend->get_implementation != NULL) {
+	font_face = font_face->backend->get_implementation (font_face,
+							    font_matrix,
+							    ctm,
+							    options);
+	if (unlikely (font_face->status)) {
+	    _cairo_scaled_font_map_unlock ();
+	    return _cairo_scaled_font_create_in_error (font_face->status);
+	}
+    }
+
+    status = font_face->backend->scaled_font_create (font_face, font_matrix,
+						     ctm, options, &scaled_font);
+    /* Did we leave the backend in an error state? */
+    if (unlikely (status)) {
+	_cairo_scaled_font_map_unlock ();
+	if (font_face != original_font_face)
+	    cairo_font_face_destroy (font_face);
+
+	if (dead != NULL)
+	    cairo_scaled_font_destroy (dead);
+
+	status = _cairo_font_face_set_error (font_face, status);
+	return _cairo_scaled_font_create_in_error (status);
+    }
+    /* Or did we encounter an error whilst constructing the scaled font? */
+    if (unlikely (scaled_font->status)) {
+	_cairo_scaled_font_map_unlock ();
+	if (font_face != original_font_face)
+	    cairo_font_face_destroy (font_face);
+
+	if (dead != NULL)
+	    cairo_scaled_font_destroy (dead);
+
+	return scaled_font;
+    }
+
+    /* Our caching above is defeated if the backend switches fonts on us -
+     * e.g. old incarnations of toy-font-face and lazily resolved
+     * ft-font-faces
+     */
+    assert (scaled_font->font_face == font_face);
+    assert (! scaled_font->cache_frozen);
+    assert (! scaled_font->global_cache_frozen);
+
+    scaled_font->original_font_face =
+	cairo_font_face_reference (original_font_face);
+
+    scaled_font->hash_entry.hash = _cairo_scaled_font_compute_hash(scaled_font);
+
+    status = _cairo_hash_table_insert (font_map->hash_table,
+				       &scaled_font->hash_entry);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	old = font_map->mru_scaled_font;
+	font_map->mru_scaled_font = scaled_font;
+	_cairo_reference_count_inc (&scaled_font->ref_count);
+    }
+
+    _cairo_scaled_font_map_unlock ();
+
+    cairo_scaled_font_destroy (old);
+    if (font_face != original_font_face)
+	cairo_font_face_destroy (font_face);
+
+    if (dead != NULL)
+	cairo_scaled_font_destroy (dead);
+
+    if (unlikely (status)) {
+	/* We can't call _cairo_scaled_font_destroy here since it expects
+	 * that the font has already been successfully inserted into the
+	 * hash table. */
+	_cairo_scaled_font_fini_internal (scaled_font);
+	free (scaled_font);
+	return _cairo_scaled_font_create_in_error (status);
+    }
+
+    return scaled_font;
+}
+slim_hidden_def (cairo_scaled_font_create);
+
+static cairo_scaled_font_t *_cairo_scaled_font_nil_objects[CAIRO_STATUS_LAST_STATUS + 1];
+
+/* XXX This should disappear in favour of a common pool of error objects. */
+cairo_scaled_font_t *
+_cairo_scaled_font_create_in_error (cairo_status_t status)
+{
+    cairo_scaled_font_t *scaled_font;
+
+    assert (status != CAIRO_STATUS_SUCCESS);
+
+    if (status == CAIRO_STATUS_NO_MEMORY)
+	return (cairo_scaled_font_t *) &_cairo_scaled_font_nil;
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex);
+    scaled_font = _cairo_scaled_font_nil_objects[status];
+    if (unlikely (scaled_font == NULL)) {
+	scaled_font = _cairo_malloc (sizeof (cairo_scaled_font_t));
+	if (unlikely (scaled_font == NULL)) {
+	    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex);
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return (cairo_scaled_font_t *) &_cairo_scaled_font_nil;
+	}
+
+	*scaled_font = _cairo_scaled_font_nil;
+	scaled_font->status = status;
+	_cairo_scaled_font_nil_objects[status] = scaled_font;
+    }
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex);
+
+    return scaled_font;
+}
+
+void
+_cairo_scaled_font_reset_static_data (void)
+{
+    int status;
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex);
+    for (status = CAIRO_STATUS_SUCCESS;
+	 status <= CAIRO_STATUS_LAST_STATUS;
+	 status++)
+    {
+	free (_cairo_scaled_font_nil_objects[status]);
+	_cairo_scaled_font_nil_objects[status] = NULL;
+    }
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex);
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex);
+    if (cairo_scaled_glyph_page_cache.hash_table != NULL) {
+	_cairo_cache_fini (&cairo_scaled_glyph_page_cache);
+	cairo_scaled_glyph_page_cache.hash_table = NULL;
+    }
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex);
+}
+
+/**
+ * cairo_scaled_font_reference:
+ * @scaled_font: a #cairo_scaled_font_t, (may be %NULL in which case
+ * this function does nothing)
+ *
+ * Increases the reference count on @scaled_font by one. This prevents
+ * @scaled_font from being destroyed until a matching call to
+ * cairo_scaled_font_destroy() is made.
+ *
+ * Use cairo_scaled_font_get_reference_count() to get the number of
+ * references to a #cairo_scaled_font_t.
+ *
+ * Returns: the referenced #cairo_scaled_font_t
+ *
+ * Since: 1.0
+ **/
+cairo_scaled_font_t *
+cairo_scaled_font_reference (cairo_scaled_font_t *scaled_font)
+{
+    if (scaled_font == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count))
+	return scaled_font;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count));
+
+    _cairo_reference_count_inc (&scaled_font->ref_count);
+
+    return scaled_font;
+}
+slim_hidden_def (cairo_scaled_font_reference);
+
+/**
+ * cairo_scaled_font_destroy:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Decreases the reference count on @font by one. If the result
+ * is zero, then @font and all associated resources are freed.
+ * See cairo_scaled_font_reference().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_scaled_font_destroy (cairo_scaled_font_t *scaled_font)
+{
+    cairo_scaled_font_t *lru = NULL;
+    cairo_scaled_font_map_t *font_map;
+
+    assert (CAIRO_MUTEX_IS_UNLOCKED (_cairo_scaled_font_map_mutex));
+
+    if (scaled_font == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count))
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&scaled_font->ref_count))
+	return;
+
+    assert (! scaled_font->cache_frozen);
+    assert (! scaled_font->global_cache_frozen);
+
+    font_map = _cairo_scaled_font_map_lock ();
+    assert (font_map != NULL);
+
+    /* Another thread may have resurrected the font whilst we waited */
+    if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)) {
+	if (! scaled_font->placeholder &&
+	    scaled_font->hash_entry.hash != ZOMBIE)
+	{
+	    /* Another thread may have already inserted us into the holdovers */
+	    if (scaled_font->holdover)
+		goto unlock;
+
+	    /* Rather than immediately destroying this object, we put it into
+	     * the font_map->holdovers array in case it will get used again
+	     * soon (and is why we must hold the lock over the atomic op on
+	     * the reference count). To make room for it, we do actually
+	     * destroy the least-recently-used holdover.
+	     */
+
+	    if (font_map->num_holdovers == CAIRO_SCALED_FONT_MAX_HOLDOVERS) {
+		lru = font_map->holdovers[0];
+		assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&lru->ref_count));
+
+		_cairo_hash_table_remove (font_map->hash_table,
+					  &lru->hash_entry);
+
+		font_map->num_holdovers--;
+		memmove (&font_map->holdovers[0],
+			 &font_map->holdovers[1],
+			 font_map->num_holdovers * sizeof (cairo_scaled_font_t*));
+	    }
+
+	    font_map->holdovers[font_map->num_holdovers++] = scaled_font;
+	    scaled_font->holdover = TRUE;
+	} else
+	    lru = scaled_font;
+    }
+
+  unlock:
+    _cairo_scaled_font_map_unlock ();
+
+    /* If we pulled an item from the holdovers array, (while the font
+     * map lock was held, of course), then there is no way that anyone
+     * else could have acquired a reference to it. So we can now
+     * safely call fini on it without any lock held. This is desirable
+     * as we never want to call into any backend function with a lock
+     * held. */
+    if (lru != NULL) {
+	_cairo_scaled_font_fini_internal (lru);
+	free (lru);
+    }
+}
+slim_hidden_def (cairo_scaled_font_destroy);
+
+/**
+ * cairo_scaled_font_get_reference_count:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Returns the current reference count of @scaled_font.
+ *
+ * Return value: the current reference count of @scaled_font.  If the
+ * object is a nil object, 0 will be returned.
+ *
+ * Since: 1.4
+ **/
+unsigned int
+cairo_scaled_font_get_reference_count (cairo_scaled_font_t *scaled_font)
+{
+    if (scaled_font == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count))
+	return 0;
+
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&scaled_font->ref_count);
+}
+
+/**
+ * cairo_scaled_font_get_user_data:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Return user data previously attached to @scaled_font using the
+ * specified key.  If no user data has been attached with the given
+ * key this function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ *
+ * Since: 1.4
+ **/
+void *
+cairo_scaled_font_get_user_data (cairo_scaled_font_t	     *scaled_font,
+				 const cairo_user_data_key_t *key)
+{
+    return _cairo_user_data_array_get_data (&scaled_font->user_data,
+					    key);
+}
+slim_hidden_def (cairo_scaled_font_get_user_data);
+
+/**
+ * cairo_scaled_font_set_user_data:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach to the #cairo_scaled_font_t
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * #cairo_t is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attach user data to @scaled_font.  To remove user data from a surface,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_scaled_font_set_user_data (cairo_scaled_font_t	     *scaled_font,
+				 const cairo_user_data_key_t *key,
+				 void			     *user_data,
+				 cairo_destroy_func_t	      destroy)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count))
+	return scaled_font->status;
+
+    return _cairo_user_data_array_set_data (&scaled_font->user_data,
+					    key, user_data, destroy);
+}
+slim_hidden_def (cairo_scaled_font_set_user_data);
+
+/* Public font API follows. */
+
+/**
+ * cairo_scaled_font_extents:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @extents: a #cairo_font_extents_t which to store the retrieved extents.
+ *
+ * Gets the metrics for a #cairo_scaled_font_t.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_scaled_font_extents (cairo_scaled_font_t  *scaled_font,
+			   cairo_font_extents_t *extents)
+{
+    if (scaled_font->status) {
+	extents->ascent  = 0.0;
+	extents->descent = 0.0;
+	extents->height  = 0.0;
+	extents->max_x_advance = 0.0;
+	extents->max_y_advance = 0.0;
+	return;
+    }
+
+    *extents = scaled_font->extents;
+}
+slim_hidden_def (cairo_scaled_font_extents);
+
+/**
+ * cairo_scaled_font_text_extents:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @utf8: a NUL-terminated string of text, encoded in UTF-8
+ * @extents: a #cairo_text_extents_t which to store the retrieved extents.
+ *
+ * Gets the extents for a string of text. The extents describe a
+ * user-space rectangle that encloses the "inked" portion of the text
+ * drawn at the origin (0,0) (as it would be drawn by cairo_show_text()
+ * if the cairo graphics state were set to the same font_face,
+ * font_matrix, ctm, and font_options as @scaled_font).  Additionally,
+ * the x_advance and y_advance values indicate the amount by which the
+ * current point would be advanced by cairo_show_text().
+ *
+ * Note that whitespace characters do not directly contribute to the
+ * size of the rectangle (extents.width and extents.height). They do
+ * contribute indirectly by changing the position of non-whitespace
+ * characters. In particular, trailing whitespace characters are
+ * likely to not affect the size of the rectangle, though they will
+ * affect the x_advance and y_advance values.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_scaled_font_text_extents (cairo_scaled_font_t   *scaled_font,
+				const char            *utf8,
+				cairo_text_extents_t  *extents)
+{
+    cairo_status_t status;
+    cairo_glyph_t *glyphs = NULL;
+    int num_glyphs;
+
+    if (scaled_font->status)
+	goto ZERO_EXTENTS;
+
+    if (utf8 == NULL)
+	goto ZERO_EXTENTS;
+
+    status = cairo_scaled_font_text_to_glyphs (scaled_font, 0., 0.,
+					       utf8, -1,
+					       &glyphs, &num_glyphs,
+					       NULL, NULL,
+					       NULL);
+    if (unlikely (status)) {
+	status = _cairo_scaled_font_set_error (scaled_font, status);
+	goto ZERO_EXTENTS;
+    }
+
+    cairo_scaled_font_glyph_extents (scaled_font, glyphs, num_glyphs, extents);
+    free (glyphs);
+
+    return;
+
+ZERO_EXTENTS:
+    extents->x_bearing = 0.0;
+    extents->y_bearing = 0.0;
+    extents->width  = 0.0;
+    extents->height = 0.0;
+    extents->x_advance = 0.0;
+    extents->y_advance = 0.0;
+}
+
+/**
+ * cairo_scaled_font_glyph_extents:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @glyphs: an array of glyph IDs with X and Y offsets.
+ * @num_glyphs: the number of glyphs in the @glyphs array
+ * @extents: a #cairo_text_extents_t which to store the retrieved extents.
+ *
+ * Gets the extents for an array of glyphs. The extents describe a
+ * user-space rectangle that encloses the "inked" portion of the
+ * glyphs, (as they would be drawn by cairo_show_glyphs() if the cairo
+ * graphics state were set to the same font_face, font_matrix, ctm,
+ * and font_options as @scaled_font).  Additionally, the x_advance and
+ * y_advance values indicate the amount by which the current point
+ * would be advanced by cairo_show_glyphs().
+ *
+ * Note that whitespace glyphs do not contribute to the size of the
+ * rectangle (extents.width and extents.height).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_scaled_font_glyph_extents (cairo_scaled_font_t   *scaled_font,
+				 const cairo_glyph_t   *glyphs,
+				 int                    num_glyphs,
+				 cairo_text_extents_t  *extents)
+{
+    cairo_status_t status;
+    int i;
+    double min_x = 0.0, min_y = 0.0, max_x = 0.0, max_y = 0.0;
+    cairo_bool_t visible = FALSE;
+    cairo_scaled_glyph_t *scaled_glyph = NULL;
+
+    extents->x_bearing = 0.0;
+    extents->y_bearing = 0.0;
+    extents->width  = 0.0;
+    extents->height = 0.0;
+    extents->x_advance = 0.0;
+    extents->y_advance = 0.0;
+
+    if (unlikely (scaled_font->status))
+	goto ZERO_EXTENTS;
+
+    if (num_glyphs == 0)
+	goto ZERO_EXTENTS;
+
+    if (unlikely (num_glyphs < 0)) {
+	_cairo_error_throw (CAIRO_STATUS_NEGATIVE_COUNT);
+	/* XXX Can't propagate error */
+	goto ZERO_EXTENTS;
+    }
+
+    if (unlikely (glyphs == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NULL_POINTER);
+	/* XXX Can't propagate error */
+	goto ZERO_EXTENTS;
+    }
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+
+    for (i = 0; i < num_glyphs; i++) {
+	double			left, top, right, bottom;
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[i].index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+	if (unlikely (status)) {
+	    status = _cairo_scaled_font_set_error (scaled_font, status);
+	    goto UNLOCK;
+	}
+
+	/* "Ink" extents should skip "invisible" glyphs */
+	if (scaled_glyph->metrics.width == 0 || scaled_glyph->metrics.height == 0)
+	    continue;
+
+	left = scaled_glyph->metrics.x_bearing + glyphs[i].x;
+	right = left + scaled_glyph->metrics.width;
+	top = scaled_glyph->metrics.y_bearing + glyphs[i].y;
+	bottom = top + scaled_glyph->metrics.height;
+
+	if (!visible) {
+	    visible = TRUE;
+	    min_x = left;
+	    max_x = right;
+	    min_y = top;
+	    max_y = bottom;
+	} else {
+	    if (left < min_x) min_x = left;
+	    if (right > max_x) max_x = right;
+	    if (top < min_y) min_y = top;
+	    if (bottom > max_y) max_y = bottom;
+	}
+    }
+
+    if (visible) {
+	extents->x_bearing = min_x - glyphs[0].x;
+	extents->y_bearing = min_y - glyphs[0].y;
+	extents->width = max_x - min_x;
+	extents->height = max_y - min_y;
+    } else {
+	extents->x_bearing = 0.0;
+	extents->y_bearing = 0.0;
+	extents->width = 0.0;
+	extents->height = 0.0;
+    }
+
+    if (num_glyphs) {
+        double x0, y0, x1, y1;
+
+	x0 = glyphs[0].x;
+	y0 = glyphs[0].y;
+
+	/* scaled_glyph contains the glyph for num_glyphs - 1 already. */
+	x1 = glyphs[num_glyphs - 1].x + scaled_glyph->metrics.x_advance;
+	y1 = glyphs[num_glyphs - 1].y + scaled_glyph->metrics.y_advance;
+
+	extents->x_advance = x1 - x0;
+	extents->y_advance = y1 - y0;
+    } else {
+	extents->x_advance = 0.0;
+	extents->y_advance = 0.0;
+    }
+
+ UNLOCK:
+    _cairo_scaled_font_thaw_cache (scaled_font);
+    return;
+
+ZERO_EXTENTS:
+    extents->x_bearing = 0.0;
+    extents->y_bearing = 0.0;
+    extents->width  = 0.0;
+    extents->height = 0.0;
+    extents->x_advance = 0.0;
+    extents->y_advance = 0.0;
+}
+slim_hidden_def (cairo_scaled_font_glyph_extents);
+
+#define GLYPH_LUT_SIZE 64
+static cairo_status_t
+cairo_scaled_font_text_to_glyphs_internal_cached (cairo_scaled_font_t		 *scaled_font,
+						    double			  x,
+						    double			  y,
+						    const char			 *utf8,
+						    cairo_glyph_t		 *glyphs,
+						    cairo_text_cluster_t	**clusters,
+						    int				  num_chars)
+{
+    struct glyph_lut_elt {
+	unsigned long index;
+	double x_advance;
+	double y_advance;
+    } glyph_lut[GLYPH_LUT_SIZE];
+    uint32_t glyph_lut_unicode[GLYPH_LUT_SIZE];
+    cairo_status_t status;
+    const char *p;
+    int i;
+
+    for (i = 0; i < GLYPH_LUT_SIZE; i++)
+	glyph_lut_unicode[i] = ~0U;
+
+    p = utf8;
+    for (i = 0; i < num_chars; i++) {
+	int idx, num_bytes;
+	uint32_t unicode;
+	cairo_scaled_glyph_t *scaled_glyph;
+	struct glyph_lut_elt *glyph_slot;
+
+	num_bytes = _cairo_utf8_get_char_validated (p, &unicode);
+	p += num_bytes;
+
+	glyphs[i].x = x;
+	glyphs[i].y = y;
+
+	idx = unicode % ARRAY_LENGTH (glyph_lut);
+	glyph_slot = &glyph_lut[idx];
+	if (glyph_lut_unicode[idx] == unicode) {
+	    glyphs[i].index = glyph_slot->index;
+	    x += glyph_slot->x_advance;
+	    y += glyph_slot->y_advance;
+	} else {
+	    unsigned long g;
+
+	    g = scaled_font->backend->ucs4_to_index (scaled_font, unicode);
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 g,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &scaled_glyph);
+	    if (unlikely (status))
+		return status;
+
+	    x += scaled_glyph->metrics.x_advance;
+	    y += scaled_glyph->metrics.y_advance;
+
+	    glyph_lut_unicode[idx] = unicode;
+	    glyph_slot->index = g;
+	    glyph_slot->x_advance = scaled_glyph->metrics.x_advance;
+	    glyph_slot->y_advance = scaled_glyph->metrics.y_advance;
+
+	    glyphs[i].index = g;
+	}
+
+	if (clusters) {
+	    (*clusters)[i].num_bytes  = num_bytes;
+	    (*clusters)[i].num_glyphs = 1;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_scaled_font_text_to_glyphs_internal_uncached (cairo_scaled_font_t	 *scaled_font,
+						  double		  x,
+						  double		  y,
+						  const char		 *utf8,
+						  cairo_glyph_t		 *glyphs,
+						  cairo_text_cluster_t	**clusters,
+						  int			  num_chars)
+{
+    const char *p;
+    int i;
+
+    p = utf8;
+    for (i = 0; i < num_chars; i++) {
+	unsigned long g;
+	int num_bytes;
+	uint32_t unicode;
+	cairo_scaled_glyph_t *scaled_glyph;
+	cairo_status_t status;
+
+	num_bytes = _cairo_utf8_get_char_validated (p, &unicode);
+	p += num_bytes;
+
+	glyphs[i].x = x;
+	glyphs[i].y = y;
+
+	g = scaled_font->backend->ucs4_to_index (scaled_font, unicode);
+
+	/*
+	 * No advance needed for a single character string. So, let's speed up
+	 * one-character strings by skipping glyph lookup.
+	 */
+	if (num_chars > 1) {
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+					     g,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+	    if (unlikely (status))
+		return status;
+
+	    x += scaled_glyph->metrics.x_advance;
+	    y += scaled_glyph->metrics.y_advance;
+	}
+
+	glyphs[i].index = g;
+
+	if (clusters) {
+	    (*clusters)[i].num_bytes  = num_bytes;
+	    (*clusters)[i].num_glyphs = 1;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_scaled_font_text_to_glyphs:
+ * @x: X position to place first glyph
+ * @y: Y position to place first glyph
+ * @scaled_font: a #cairo_scaled_font_t
+ * @utf8: a string of text encoded in UTF-8
+ * @utf8_len: length of @utf8 in bytes, or -1 if it is NUL-terminated
+ * @glyphs: pointer to array of glyphs to fill
+ * @num_glyphs: pointer to number of glyphs
+ * @clusters: pointer to array of cluster mapping information to fill, or %NULL
+ * @num_clusters: pointer to number of clusters, or %NULL
+ * @cluster_flags: pointer to location to store cluster flags corresponding to the
+ *                 output @clusters, or %NULL
+ *
+ * Converts UTF-8 text to an array of glyphs, optionally with cluster
+ * mapping, that can be used to render later using @scaled_font.
+ *
+ * If @glyphs initially points to a non-%NULL value, that array is used
+ * as a glyph buffer, and @num_glyphs should point to the number of glyph
+ * entries available there.  If the provided glyph array is too short for
+ * the conversion, a new glyph array is allocated using cairo_glyph_allocate()
+ * and placed in @glyphs.  Upon return, @num_glyphs always contains the
+ * number of generated glyphs.  If the value @glyphs points to has changed
+ * after the call, the user is responsible for freeing the allocated glyph
+ * array using cairo_glyph_free().  This may happen even if the provided
+ * array was large enough.
+ *
+ * If @clusters is not %NULL, @num_clusters and @cluster_flags should not be %NULL,
+ * and cluster mapping will be computed.
+ * The semantics of how cluster array allocation works is similar to the glyph
+ * array.  That is,
+ * if @clusters initially points to a non-%NULL value, that array is used
+ * as a cluster buffer, and @num_clusters should point to the number of cluster
+ * entries available there.  If the provided cluster array is too short for
+ * the conversion, a new cluster array is allocated using cairo_text_cluster_allocate()
+ * and placed in @clusters.  Upon return, @num_clusters always contains the
+ * number of generated clusters.  If the value @clusters points at has changed
+ * after the call, the user is responsible for freeing the allocated cluster
+ * array using cairo_text_cluster_free().  This may happen even if the provided
+ * array was large enough.
+ *
+ * In the simplest case, @glyphs and @clusters can point to %NULL initially
+ * and a suitable array will be allocated.  In code:
+ * <informalexample><programlisting>
+ * cairo_status_t status;
+ *
+ * cairo_glyph_t *glyphs = NULL;
+ * int num_glyphs;
+ * cairo_text_cluster_t *clusters = NULL;
+ * int num_clusters;
+ * cairo_text_cluster_flags_t cluster_flags;
+ *
+ * status = cairo_scaled_font_text_to_glyphs (scaled_font,
+ *                                            x, y,
+ *                                            utf8, utf8_len,
+ *                                            &amp;glyphs, &amp;num_glyphs,
+ *                                            &amp;clusters, &amp;num_clusters, &amp;cluster_flags);
+ *
+ * if (status == CAIRO_STATUS_SUCCESS) {
+ *     cairo_show_text_glyphs (cr,
+ *                             utf8, utf8_len,
+ *                             glyphs, num_glyphs,
+ *                             clusters, num_clusters, cluster_flags);
+ *
+ *     cairo_glyph_free (glyphs);
+ *     cairo_text_cluster_free (clusters);
+ * }
+ * </programlisting></informalexample>
+ *
+ * If no cluster mapping is needed:
+ * <informalexample><programlisting>
+ * cairo_status_t status;
+ *
+ * cairo_glyph_t *glyphs = NULL;
+ * int num_glyphs;
+ *
+ * status = cairo_scaled_font_text_to_glyphs (scaled_font,
+ *                                            x, y,
+ *                                            utf8, utf8_len,
+ *                                            &amp;glyphs, &amp;num_glyphs,
+ *                                            NULL, NULL,
+ *                                            NULL);
+ *
+ * if (status == CAIRO_STATUS_SUCCESS) {
+ *     cairo_show_glyphs (cr, glyphs, num_glyphs);
+ *     cairo_glyph_free (glyphs);
+ * }
+ * </programlisting></informalexample>
+ *
+ * If stack-based glyph and cluster arrays are to be used for small
+ * arrays:
+ * <informalexample><programlisting>
+ * cairo_status_t status;
+ *
+ * cairo_glyph_t stack_glyphs[40];
+ * cairo_glyph_t *glyphs = stack_glyphs;
+ * int num_glyphs = sizeof (stack_glyphs) / sizeof (stack_glyphs[0]);
+ * cairo_text_cluster_t stack_clusters[40];
+ * cairo_text_cluster_t *clusters = stack_clusters;
+ * int num_clusters = sizeof (stack_clusters) / sizeof (stack_clusters[0]);
+ * cairo_text_cluster_flags_t cluster_flags;
+ *
+ * status = cairo_scaled_font_text_to_glyphs (scaled_font,
+ *                                            x, y,
+ *                                            utf8, utf8_len,
+ *                                            &amp;glyphs, &amp;num_glyphs,
+ *                                            &amp;clusters, &amp;num_clusters, &amp;cluster_flags);
+ *
+ * if (status == CAIRO_STATUS_SUCCESS) {
+ *     cairo_show_text_glyphs (cr,
+ *                             utf8, utf8_len,
+ *                             glyphs, num_glyphs,
+ *                             clusters, num_clusters, cluster_flags);
+ *
+ *     if (glyphs != stack_glyphs)
+ *         cairo_glyph_free (glyphs);
+ *     if (clusters != stack_clusters)
+ *         cairo_text_cluster_free (clusters);
+ * }
+ * </programlisting></informalexample>
+ *
+ * For details of how @clusters, @num_clusters, and @cluster_flags map input
+ * UTF-8 text to the output glyphs see cairo_show_text_glyphs().
+ *
+ * The output values can be readily passed to cairo_show_text_glyphs()
+ * cairo_show_glyphs(), or related functions, assuming that the exact
+ * same @scaled_font is used for the operation.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS upon success, or an error status
+ * if the input values are wrong or if conversion failed.  If the input
+ * values are correct but the conversion failed, the error status is also
+ * set on @scaled_font.
+ *
+ * Since: 1.8
+ **/
+#define CACHING_THRESHOLD 16
+cairo_status_t
+cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t   *scaled_font,
+				  double		 x,
+				  double		 y,
+				  const char	        *utf8,
+				  int		         utf8_len,
+				  cairo_glyph_t	       **glyphs,
+				  int		        *num_glyphs,
+				  cairo_text_cluster_t **clusters,
+				  int		        *num_clusters,
+				  cairo_text_cluster_flags_t *cluster_flags)
+{
+    int num_chars = 0;
+    cairo_int_status_t status;
+    cairo_glyph_t *orig_glyphs;
+    cairo_text_cluster_t *orig_clusters;
+
+    status = scaled_font->status;
+    if (unlikely (status))
+	return status;
+
+    /* A slew of sanity checks */
+
+    /* glyphs and num_glyphs can't be NULL */
+    if (glyphs     == NULL ||
+	num_glyphs == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NULL_POINTER);
+	goto BAIL;
+    }
+
+    /* Special case for NULL and -1 */
+    if (utf8 == NULL && utf8_len == -1)
+	utf8_len = 0;
+
+    /* No NULLs for non-NULLs! */
+    if ((utf8_len && utf8          == NULL) ||
+	(clusters && num_clusters  == NULL) ||
+	(clusters && cluster_flags == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NULL_POINTER);
+	goto BAIL;
+    }
+
+    /* A -1 for utf8_len means NUL-terminated */
+    if (utf8_len == -1)
+	utf8_len = strlen (utf8);
+
+    /* A NULL *glyphs means no prealloced glyphs array */
+    if (glyphs && *glyphs == NULL)
+	*num_glyphs = 0;
+
+    /* A NULL *clusters means no prealloced clusters array */
+    if (clusters && *clusters == NULL)
+	*num_clusters = 0;
+
+    if (!clusters && num_clusters) {
+	num_clusters = NULL;
+    }
+
+    if (cluster_flags) {
+	*cluster_flags = FALSE;
+    }
+
+    if (!clusters && cluster_flags) {
+	cluster_flags = NULL;
+    }
+
+    /* Apart from that, no negatives */
+    if (utf8_len < 0 ||
+	*num_glyphs < 0 ||
+	(num_clusters && *num_clusters < 0)) {
+	status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT);
+	goto BAIL;
+    }
+
+    if (utf8_len == 0) {
+	status = CAIRO_STATUS_SUCCESS;
+	goto BAIL;
+    }
+
+    /* validate input so backend does not have to */
+    status = _cairo_utf8_to_ucs4 (utf8, utf8_len, NULL, &num_chars);
+    if (unlikely (status))
+	goto BAIL;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+
+    orig_glyphs = *glyphs;
+    orig_clusters = clusters ? *clusters : NULL;
+
+    if (scaled_font->backend->text_to_glyphs) {
+	status = scaled_font->backend->text_to_glyphs (scaled_font, x, y,
+						       utf8, utf8_len,
+						       glyphs, num_glyphs,
+						       clusters, num_clusters,
+						       cluster_flags);
+        if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	    if (status == CAIRO_INT_STATUS_SUCCESS) {
+	        /* The checks here are crude; we only should do them in
+		 * user-font backend, but they don't hurt here.  This stuff
+		 * can be hard to get right. */
+
+	        if (*num_glyphs < 0) {
+		    status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT);
+		    goto DONE;
+		}
+		if (*num_glyphs != 0 && *glyphs == NULL) {
+		    status = _cairo_error (CAIRO_STATUS_NULL_POINTER);
+		    goto DONE;
+		}
+
+		if (clusters) {
+		    if (*num_clusters < 0) {
+			status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT);
+			goto DONE;
+		    }
+		    if (*num_clusters != 0 && *clusters == NULL) {
+			status = _cairo_error (CAIRO_STATUS_NULL_POINTER);
+			goto DONE;
+		    }
+
+		    /* Don't trust the backend, validate clusters! */
+		    status =
+			_cairo_validate_text_clusters (utf8, utf8_len,
+						       *glyphs, *num_glyphs,
+						       *clusters, *num_clusters,
+						       *cluster_flags);
+		}
+	    }
+
+            goto DONE;
+	}
+    }
+
+    if (*num_glyphs < num_chars) {
+	*glyphs = cairo_glyph_allocate (num_chars);
+	if (unlikely (*glyphs == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto DONE;
+	}
+    }
+    *num_glyphs = num_chars;
+
+    if (clusters) {
+	if (*num_clusters < num_chars) {
+	    *clusters = cairo_text_cluster_allocate (num_chars);
+	    if (unlikely (*clusters == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto DONE;
+	    }
+	}
+	*num_clusters = num_chars;
+    }
+
+    if (num_chars > CACHING_THRESHOLD)
+	status = cairo_scaled_font_text_to_glyphs_internal_cached (scaled_font,
+								     x, y,
+								     utf8,
+								     *glyphs,
+								     clusters,
+								     num_chars);
+    else
+	status = cairo_scaled_font_text_to_glyphs_internal_uncached (scaled_font,
+								   x, y,
+								   utf8,
+								   *glyphs,
+								   clusters,
+								   num_chars);
+
+ DONE: /* error that should be logged on scaled_font happened */
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    if (unlikely (status)) {
+	*num_glyphs = 0;
+	if (*glyphs != orig_glyphs) {
+	    cairo_glyph_free (*glyphs);
+	    *glyphs = orig_glyphs;
+	}
+
+	if (clusters) {
+	    *num_clusters = 0;
+	    if (*clusters != orig_clusters) {
+		cairo_text_cluster_free (*clusters);
+		*clusters = orig_clusters;
+	    }
+	}
+    }
+
+    return _cairo_scaled_font_set_error (scaled_font, status);
+
+ BAIL: /* error with input arguments */
+
+    if (num_glyphs)
+	*num_glyphs = 0;
+
+    if (num_clusters)
+	*num_clusters = 0;
+
+    return status;
+}
+slim_hidden_def (cairo_scaled_font_text_to_glyphs);
+
+static inline cairo_bool_t
+_range_contains_glyph (const cairo_box_t *extents,
+		       cairo_fixed_t left,
+		       cairo_fixed_t top,
+		       cairo_fixed_t right,
+		       cairo_fixed_t bottom)
+{
+    if (left == right || top == bottom)
+	return FALSE;
+
+    return right > extents->p1.x &&
+	   left < extents->p2.x &&
+	   bottom > extents->p1.y &&
+	   top < extents->p2.y;
+}
+
+static cairo_status_t
+_cairo_scaled_font_single_glyph_device_extents (cairo_scaled_font_t	 *scaled_font,
+						const cairo_glyph_t	 *glyph,
+						cairo_rectangle_int_t   *extents)
+{
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_status_t status;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    status = _cairo_scaled_glyph_lookup (scaled_font,
+					 glyph->index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS,
+					 &scaled_glyph);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	cairo_bool_t round_xy = _cairo_font_options_get_round_glyph_positions (&scaled_font->options) == CAIRO_ROUND_GLYPH_POS_ON;
+	cairo_box_t box;
+	cairo_fixed_t v;
+
+	if (round_xy)
+	    v = _cairo_fixed_from_int (_cairo_lround (glyph->x));
+	else
+	    v = _cairo_fixed_from_double (glyph->x);
+	box.p1.x = v + scaled_glyph->bbox.p1.x;
+	box.p2.x = v + scaled_glyph->bbox.p2.x;
+
+	if (round_xy)
+	    v = _cairo_fixed_from_int (_cairo_lround (glyph->y));
+	else
+	    v = _cairo_fixed_from_double (glyph->y);
+	box.p1.y = v + scaled_glyph->bbox.p1.y;
+	box.p2.y = v + scaled_glyph->bbox.p2.y;
+
+	_cairo_box_round_to_rectangle (&box, extents);
+    }
+    _cairo_scaled_font_thaw_cache (scaled_font);
+    return status;
+}
+
+/*
+ * Compute a device-space bounding box for the glyphs.
+ */
+cairo_status_t
+_cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t	 *scaled_font,
+					 const cairo_glyph_t	 *glyphs,
+					 int                      num_glyphs,
+					 cairo_rectangle_int_t   *extents,
+					 cairo_bool_t *overlap_out)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_box_t box = { { INT_MAX, INT_MAX }, { INT_MIN, INT_MIN }};
+    cairo_scaled_glyph_t *glyph_cache[64];
+    cairo_bool_t overlap = overlap_out ? FALSE : TRUE;
+    cairo_round_glyph_positions_t round_glyph_positions = _cairo_font_options_get_round_glyph_positions (&scaled_font->options);
+    int i;
+
+    if (unlikely (scaled_font->status))
+	return scaled_font->status;
+
+    if (num_glyphs == 1) {
+	if (overlap_out)
+	    *overlap_out = FALSE;
+	return _cairo_scaled_font_single_glyph_device_extents (scaled_font,
+							       glyphs,
+							       extents);
+    }
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+
+    for (i = 0; i < num_glyphs; i++) {
+	cairo_scaled_glyph_t	*scaled_glyph;
+	cairo_fixed_t x, y, x1, y1, x2, y2;
+	int cache_index = glyphs[i].index % ARRAY_LENGTH (glyph_cache);
+
+	scaled_glyph = glyph_cache[cache_index];
+	if (scaled_glyph == NULL ||
+	    _cairo_scaled_glyph_index (scaled_glyph) != glyphs[i].index)
+	{
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 glyphs[i].index,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &scaled_glyph);
+	    if (unlikely (status))
+		break;
+
+	    glyph_cache[cache_index] = scaled_glyph;
+	}
+
+	if (round_glyph_positions == CAIRO_ROUND_GLYPH_POS_ON)
+	    x = _cairo_fixed_from_int (_cairo_lround (glyphs[i].x));
+	else
+	    x = _cairo_fixed_from_double (glyphs[i].x);
+	x1 = x + scaled_glyph->bbox.p1.x;
+	x2 = x + scaled_glyph->bbox.p2.x;
+
+	if (round_glyph_positions == CAIRO_ROUND_GLYPH_POS_ON)
+	    y = _cairo_fixed_from_int (_cairo_lround (glyphs[i].y));
+	else
+	    y = _cairo_fixed_from_double (glyphs[i].y);
+	y1 = y + scaled_glyph->bbox.p1.y;
+	y2 = y + scaled_glyph->bbox.p2.y;
+
+	if (overlap == FALSE)
+	    overlap = _range_contains_glyph (&box, x1, y1, x2, y2);
+
+	if (x1 < box.p1.x) box.p1.x = x1;
+	if (x2 > box.p2.x) box.p2.x = x2;
+	if (y1 < box.p1.y) box.p1.y = y1;
+	if (y2 > box.p2.y) box.p2.y = y2;
+    }
+
+    _cairo_scaled_font_thaw_cache (scaled_font);
+    if (unlikely (status))
+	return _cairo_scaled_font_set_error (scaled_font, status);
+
+    if (box.p1.x < box.p2.x) {
+	_cairo_box_round_to_rectangle (&box, extents);
+    } else {
+	extents->x = extents->y = 0;
+	extents->width = extents->height = 0;
+    }
+
+    if (overlap_out != NULL)
+	*overlap_out = overlap;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_bool_t
+_cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t	 *scaled_font,
+					      const cairo_glyph_t	 *glyphs,
+					      int                      num_glyphs,
+					      cairo_rectangle_int_t   *extents)
+{
+    double x0, x1, y0, y1, pad;
+    int i;
+
+    /* If any of the factors are suspect (i.e. the font is broken), bail */
+    if (scaled_font->fs_extents.max_x_advance == 0 ||
+	scaled_font->fs_extents.height == 0 ||
+	scaled_font->max_scale == 0)
+    {
+	return FALSE;
+    }
+
+    assert (num_glyphs);
+
+    x0 = x1 = glyphs[0].x;
+    y0 = y1 = glyphs[0].y;
+    for (i = 1; i < num_glyphs; i++) {
+	double g;
+
+	g = glyphs[i].x;
+	if (g < x0) x0 = g;
+	if (g > x1) x1 = g;
+
+	g = glyphs[i].y;
+	if (g < y0) y0 = g;
+	if (g > y1) y1 = g;
+    }
+
+    pad = MAX(scaled_font->fs_extents.max_x_advance,
+	      scaled_font->fs_extents.height);
+    pad *= scaled_font->max_scale;
+
+    extents->x = floor (x0 - pad);
+    extents->width = ceil (x1 + pad) - extents->x;
+    extents->y = floor (y0 - pad);
+    extents->height = ceil (y1 + pad) - extents->y;
+    return TRUE;
+}
+
+#if 0
+/* XXX win32 */
+cairo_status_t
+_cairo_scaled_font_show_glyphs (cairo_scaled_font_t	*scaled_font,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*pattern,
+				cairo_surface_t		*surface,
+				int			 source_x,
+				int			 source_y,
+				int			 dest_x,
+				int			 dest_y,
+				unsigned int		 width,
+				unsigned int		 height,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_region_t		*clip_region)
+{
+    cairo_int_status_t status;
+    cairo_surface_t *mask = NULL;
+    cairo_format_t mask_format = CAIRO_FORMAT_A1; /* shut gcc up */
+    cairo_surface_pattern_t mask_pattern;
+    int i;
+
+    /* These operators aren't interpreted the same way by the backends;
+     * they are implemented in terms of other operators in cairo-gstate.c
+     */
+    assert (op != CAIRO_OPERATOR_SOURCE && op != CAIRO_OPERATOR_CLEAR);
+
+    if (scaled_font->status)
+	return scaled_font->status;
+
+    if (!num_glyphs)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (scaled_font->backend->show_glyphs != NULL) {
+	int remaining_glyphs = num_glyphs;
+	status = scaled_font->backend->show_glyphs (scaled_font,
+						    op, pattern,
+						    surface,
+						    source_x, source_y,
+						    dest_x, dest_y,
+						    width, height,
+						    glyphs, num_glyphs,
+						    clip_region,
+						    &remaining_glyphs);
+	glyphs += num_glyphs - remaining_glyphs;
+	num_glyphs = remaining_glyphs;
+	if (remaining_glyphs == 0)
+	    status = CAIRO_INT_STATUS_SUCCESS;
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return _cairo_scaled_font_set_error (scaled_font, status);
+    }
+
+    /* Font display routine either does not exist or failed. */
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+
+    for (i = 0; i < num_glyphs; i++) {
+	int x, y;
+	cairo_image_surface_t *glyph_surface;
+	cairo_scaled_glyph_t *scaled_glyph;
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[i].index,
+					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					     &scaled_glyph);
+
+	if (unlikely (status))
+	    goto CLEANUP_MASK;
+
+	glyph_surface = scaled_glyph->surface;
+
+	/* To start, create the mask using the format from the first
+	 * glyph. Later we'll deal with different formats. */
+	if (mask == NULL) {
+	    mask_format = glyph_surface->format;
+	    mask = cairo_image_surface_create (mask_format, width, height);
+	    status = mask->status;
+	    if (unlikely (status))
+		goto CLEANUP_MASK;
+	}
+
+	/* If we have glyphs of different formats, we "upgrade" the mask
+	 * to the wider of the formats. */
+	if (glyph_surface->format != mask_format &&
+	    _cairo_format_bits_per_pixel (mask_format) <
+	    _cairo_format_bits_per_pixel (glyph_surface->format) )
+	{
+	    cairo_surface_t *new_mask;
+
+	    switch (glyph_surface->format) {
+	    case CAIRO_FORMAT_ARGB32:
+	    case CAIRO_FORMAT_A8:
+	    case CAIRO_FORMAT_A1:
+		mask_format = glyph_surface->format;
+		break;
+	    case CAIRO_FORMAT_RGB16_565:
+	    case CAIRO_FORMAT_RGB24:
+	    case CAIRO_FORMAT_RGB30:
+	    case CAIRO_FORMAT_INVALID:
+	    default:
+		ASSERT_NOT_REACHED;
+		mask_format = CAIRO_FORMAT_ARGB32;
+		break;
+	    }
+
+	    new_mask = cairo_image_surface_create (mask_format, width, height);
+	    status = new_mask->status;
+	    if (unlikely (status)) {
+		cairo_surface_destroy (new_mask);
+		goto CLEANUP_MASK;
+	    }
+
+	    _cairo_pattern_init_for_surface (&mask_pattern, mask);
+	    /* Note that we only upgrade masks, i.e. A1 -> A8 -> ARGB32, so there is
+	     * never any component alpha here.
+	     */
+	    status = _cairo_surface_composite (CAIRO_OPERATOR_ADD,
+					       &_cairo_pattern_white.base,
+					       &mask_pattern.base,
+					       new_mask,
+					       0, 0,
+					       0, 0,
+					       0, 0,
+					       width, height,
+					       NULL);
+
+	    _cairo_pattern_fini (&mask_pattern.base);
+
+	    if (unlikely (status)) {
+		cairo_surface_destroy (new_mask);
+		goto CLEANUP_MASK;
+	    }
+
+	    cairo_surface_destroy (mask);
+	    mask = new_mask;
+	}
+
+	if (glyph_surface->width && glyph_surface->height) {
+	    cairo_surface_pattern_t glyph_pattern;
+
+	    /* round glyph locations to the nearest pixel */
+	    /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
+	    x = _cairo_lround (glyphs[i].x -
+			       glyph_surface->base.device_transform.x0);
+	    y = _cairo_lround (glyphs[i].y -
+			       glyph_surface->base.device_transform.y0);
+
+	    _cairo_pattern_init_for_surface (&glyph_pattern,
+					     &glyph_surface->base);
+	    if (mask_format == CAIRO_FORMAT_ARGB32)
+		glyph_pattern.base.has_component_alpha = TRUE;
+
+	    status = _cairo_surface_composite (CAIRO_OPERATOR_ADD,
+					       &_cairo_pattern_white.base,
+					       &glyph_pattern.base,
+					       mask,
+					       0, 0,
+					       0, 0,
+					       x - dest_x, y - dest_y,
+					       glyph_surface->width,
+					       glyph_surface->height,
+					       NULL);
+
+	    _cairo_pattern_fini (&glyph_pattern.base);
+
+	    if (unlikely (status))
+		goto CLEANUP_MASK;
+	}
+    }
+
+    _cairo_pattern_init_for_surface (&mask_pattern, mask);
+    if (mask_format == CAIRO_FORMAT_ARGB32)
+	mask_pattern.base.has_component_alpha = TRUE;
+
+    status = _cairo_surface_composite (op, pattern, &mask_pattern.base,
+				       surface,
+				       source_x, source_y,
+				       0,        0,
+				       dest_x,   dest_y,
+				       width,    height,
+				       clip_region);
+
+    _cairo_pattern_fini (&mask_pattern.base);
+
+CLEANUP_MASK:
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    if (mask != NULL)
+	cairo_surface_destroy (mask);
+    return _cairo_scaled_font_set_error (scaled_font, status);
+}
+#endif
+
+/* Add a single-device-unit rectangle to a path. */
+static cairo_status_t
+_add_unit_rectangle_to_path (cairo_path_fixed_t *path,
+			     cairo_fixed_t x,
+			     cairo_fixed_t y)
+{
+    cairo_status_t status;
+
+    status = _cairo_path_fixed_move_to (path, x, y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_rel_line_to (path,
+					    _cairo_fixed_from_int (1),
+					    _cairo_fixed_from_int (0));
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_rel_line_to (path,
+					    _cairo_fixed_from_int (0),
+					    _cairo_fixed_from_int (1));
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_rel_line_to (path,
+					    _cairo_fixed_from_int (-1),
+					    _cairo_fixed_from_int (0));
+    if (unlikely (status))
+	return status;
+
+    return _cairo_path_fixed_close_path (path);
+}
+
+/**
+ * _trace_mask_to_path:
+ * @bitmap: An alpha mask (either %CAIRO_FORMAT_A1 or %CAIRO_FORMAT_A8)
+ * @path: An initialized path to hold the result
+ *
+ * Given a mask surface, (an alpha image), fill out the provided path
+ * so that when filled it would result in something that approximates
+ * the mask.
+ *
+ * Note: The current tracing code here is extremely primitive. It
+ * operates only on an A1 surface, (converting an A8 surface to A1 if
+ * necessary), and performs the tracing by drawing a little square
+ * around each pixel that is on in the mask. We do not pretend that
+ * this is a high-quality result. But we are leaving it up to someone
+ * who cares enough about getting a better result to implement
+ * something more sophisticated.
+ **/
+static cairo_status_t
+_trace_mask_to_path (cairo_image_surface_t *mask,
+		     cairo_path_fixed_t *path,
+		     double tx, double ty)
+{
+    const uint8_t *row;
+    int rows, cols, bytes_per_row;
+    int x, y, bit;
+    double xoff, yoff;
+    cairo_fixed_t x0, y0;
+    cairo_fixed_t px, py;
+    cairo_status_t status;
+
+    mask = _cairo_image_surface_coerce_to_format (mask, CAIRO_FORMAT_A1);
+    status = mask->base.status;
+    if (unlikely (status))
+	return status;
+
+    cairo_surface_get_device_offset (&mask->base, &xoff, &yoff);
+    x0 = _cairo_fixed_from_double (tx - xoff);
+    y0 = _cairo_fixed_from_double (ty - yoff);
+
+    bytes_per_row = (mask->width + 7) / 8;
+    row = mask->data;
+    for (y = 0, rows = mask->height; rows--; row += mask->stride, y++) {
+	const uint8_t *byte_ptr = row;
+	x = 0;
+	py = _cairo_fixed_from_int (y);
+	for (cols = bytes_per_row; cols--; ) {
+	    uint8_t byte = *byte_ptr++;
+	    if (byte == 0) {
+		x += 8;
+		continue;
+	    }
+
+	    byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte);
+	    for (bit = 1 << 7; bit && x < mask->width; bit >>= 1, x++) {
+		if (byte & bit) {
+		    px = _cairo_fixed_from_int (x);
+		    status = _add_unit_rectangle_to_path (path,
+							  px + x0,
+							  py + y0);
+		    if (unlikely (status))
+			goto BAIL;
+		}
+	    }
+	}
+    }
+
+BAIL:
+    cairo_surface_destroy (&mask->base);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font,
+			       const cairo_glyph_t *glyphs,
+			       int		    num_glyphs,
+			       cairo_path_fixed_t  *path)
+{
+    cairo_int_status_t status;
+    int	i;
+
+    status = scaled_font->status;
+    if (unlikely (status))
+	return status;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    for (i = 0; i < num_glyphs; i++) {
+	cairo_scaled_glyph_t *scaled_glyph;
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[i].index,
+					     CAIRO_SCALED_GLYPH_INFO_PATH,
+					     &scaled_glyph);
+	if (status == CAIRO_INT_STATUS_SUCCESS) {
+	    status = _cairo_path_fixed_append (path,
+					       scaled_glyph->path,
+					       _cairo_fixed_from_double (glyphs[i].x),
+					       _cairo_fixed_from_double (glyphs[i].y));
+
+	} else if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	    /* If the font is incapable of providing a path, then we'll
+	     * have to trace our own from a surface.
+	     */
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 glyphs[i].index,
+						 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+						 &scaled_glyph);
+	    if (unlikely (status))
+		goto BAIL;
+
+	    status = _trace_mask_to_path (scaled_glyph->surface, path,
+					  glyphs[i].x, glyphs[i].y);
+	}
+
+	if (unlikely (status))
+	    goto BAIL;
+    }
+  BAIL:
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    return _cairo_scaled_font_set_error (scaled_font, status);
+}
+
+/**
+ * _cairo_scaled_glyph_set_metrics:
+ * @scaled_glyph: a #cairo_scaled_glyph_t
+ * @scaled_font: a #cairo_scaled_font_t
+ * @fs_metrics: a #cairo_text_extents_t in font space
+ *
+ * _cairo_scaled_glyph_set_metrics() stores user space metrics
+ * for the specified glyph given font space metrics. It is
+ * called by the font backend when initializing a glyph with
+ * %CAIRO_SCALED_GLYPH_INFO_METRICS.
+ **/
+void
+_cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph,
+				 cairo_scaled_font_t *scaled_font,
+				 cairo_text_extents_t *fs_metrics)
+{
+    cairo_bool_t first = TRUE;
+    double hm, wm;
+    double min_user_x = 0.0, max_user_x = 0.0, min_user_y = 0.0, max_user_y = 0.0;
+    double min_device_x = 0.0, max_device_x = 0.0, min_device_y = 0.0, max_device_y = 0.0;
+    double device_x_advance, device_y_advance;
+
+    scaled_glyph->fs_metrics = *fs_metrics;
+
+    for (hm = 0.0; hm <= 1.0; hm += 1.0)
+	for (wm = 0.0; wm <= 1.0; wm += 1.0) {
+	    double x, y;
+
+	    /* Transform this corner to user space */
+	    x = fs_metrics->x_bearing + fs_metrics->width * wm;
+	    y = fs_metrics->y_bearing + fs_metrics->height * hm;
+	    cairo_matrix_transform_point (&scaled_font->font_matrix,
+					  &x, &y);
+	    if (first) {
+		min_user_x = max_user_x = x;
+		min_user_y = max_user_y = y;
+	    } else {
+		if (x < min_user_x) min_user_x = x;
+		if (x > max_user_x) max_user_x = x;
+		if (y < min_user_y) min_user_y = y;
+		if (y > max_user_y) max_user_y = y;
+	    }
+
+	    /* Transform this corner to device space from glyph origin */
+	    x = fs_metrics->x_bearing + fs_metrics->width * wm;
+	    y = fs_metrics->y_bearing + fs_metrics->height * hm;
+	    cairo_matrix_transform_distance (&scaled_font->scale,
+					     &x, &y);
+
+	    if (first) {
+		min_device_x = max_device_x = x;
+		min_device_y = max_device_y = y;
+	    } else {
+		if (x < min_device_x) min_device_x = x;
+		if (x > max_device_x) max_device_x = x;
+		if (y < min_device_y) min_device_y = y;
+		if (y > max_device_y) max_device_y = y;
+	    }
+	    first = FALSE;
+	}
+    scaled_glyph->metrics.x_bearing = min_user_x;
+    scaled_glyph->metrics.y_bearing = min_user_y;
+    scaled_glyph->metrics.width = max_user_x - min_user_x;
+    scaled_glyph->metrics.height = max_user_y - min_user_y;
+
+    scaled_glyph->metrics.x_advance = fs_metrics->x_advance;
+    scaled_glyph->metrics.y_advance = fs_metrics->y_advance;
+    cairo_matrix_transform_distance (&scaled_font->font_matrix,
+				     &scaled_glyph->metrics.x_advance,
+				     &scaled_glyph->metrics.y_advance);
+
+    device_x_advance = fs_metrics->x_advance;
+    device_y_advance = fs_metrics->y_advance;
+    cairo_matrix_transform_distance (&scaled_font->scale,
+				     &device_x_advance,
+				     &device_y_advance);
+
+    scaled_glyph->bbox.p1.x = _cairo_fixed_from_double (min_device_x);
+    scaled_glyph->bbox.p1.y = _cairo_fixed_from_double (min_device_y);
+    scaled_glyph->bbox.p2.x = _cairo_fixed_from_double (max_device_x);
+    scaled_glyph->bbox.p2.y = _cairo_fixed_from_double (max_device_y);
+
+    scaled_glyph->x_advance = _cairo_lround (device_x_advance);
+    scaled_glyph->y_advance = _cairo_lround (device_y_advance);
+
+    scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_METRICS;
+}
+
+void
+_cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph,
+				 cairo_scaled_font_t *scaled_font,
+				 cairo_image_surface_t *surface)
+{
+    if (scaled_glyph->surface != NULL)
+	cairo_surface_destroy (&scaled_glyph->surface->base);
+
+    /* sanity check the backend glyph contents */
+    _cairo_debug_check_image_surface_is_defined (&surface->base);
+    scaled_glyph->surface = surface;
+
+    if (surface != NULL)
+	scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_SURFACE;
+    else
+	scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_SURFACE;
+}
+
+void
+_cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph,
+			      cairo_scaled_font_t *scaled_font,
+			      cairo_path_fixed_t *path)
+{
+    if (scaled_glyph->path != NULL)
+	_cairo_path_fixed_destroy (scaled_glyph->path);
+
+    scaled_glyph->path = path;
+
+    if (path != NULL)
+	scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_PATH;
+    else
+	scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_PATH;
+}
+
+void
+_cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph,
+					   cairo_scaled_font_t *scaled_font,
+					   cairo_surface_t *recording_surface)
+{
+    if (scaled_glyph->recording_surface != NULL) {
+	cairo_surface_finish (scaled_glyph->recording_surface);
+	cairo_surface_destroy (scaled_glyph->recording_surface);
+    }
+
+    scaled_glyph->recording_surface = recording_surface;
+
+    if (recording_surface != NULL)
+	scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE;
+    else
+	scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE;
+}
+
+void
+_cairo_scaled_glyph_set_color_surface (cairo_scaled_glyph_t *scaled_glyph,
+	                               cairo_scaled_font_t *scaled_font,
+	                               cairo_image_surface_t *surface)
+{
+    if (scaled_glyph->color_surface != NULL)
+	cairo_surface_destroy (&scaled_glyph->color_surface->base);
+
+    /* sanity check the backend glyph contents */
+    _cairo_debug_check_image_surface_is_defined (&surface->base);
+    scaled_glyph->color_surface = surface;
+
+    if (surface != NULL)
+	scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE;
+    else
+	scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE;
+}
+
+static cairo_bool_t
+_cairo_scaled_glyph_page_can_remove (const void *closure)
+{
+    const cairo_scaled_glyph_page_t *page = closure;
+    const cairo_scaled_font_t *scaled_font;
+
+    scaled_font = page->scaled_font;
+    return scaled_font->cache_frozen == 0;
+}
+
+static cairo_status_t
+_cairo_scaled_font_allocate_glyph (cairo_scaled_font_t *scaled_font,
+				   cairo_scaled_glyph_t **scaled_glyph)
+{
+    cairo_scaled_glyph_page_t *page;
+    cairo_status_t status;
+
+    assert (scaled_font->cache_frozen);
+
+    /* only the first page in the list may contain available slots */
+    if (! cairo_list_is_empty (&scaled_font->glyph_pages)) {
+        page = cairo_list_last_entry (&scaled_font->glyph_pages,
+                                      cairo_scaled_glyph_page_t,
+                                      link);
+        if (page->num_glyphs < CAIRO_SCALED_GLYPH_PAGE_SIZE) {
+            *scaled_glyph = &page->glyphs[page->num_glyphs++];
+            return CAIRO_STATUS_SUCCESS;
+        }
+    }
+
+    page = _cairo_malloc (sizeof (cairo_scaled_glyph_page_t));
+    if (unlikely (page == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    page->cache_entry.hash = (unsigned long) scaled_font;
+    page->scaled_font = scaled_font;
+    page->cache_entry.size = 1; /* XXX occupancy weighting? */
+    page->num_glyphs = 0;
+
+    CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex);
+    if (scaled_font->global_cache_frozen == FALSE) {
+	if (unlikely (cairo_scaled_glyph_page_cache.hash_table == NULL)) {
+	    status = _cairo_cache_init (&cairo_scaled_glyph_page_cache,
+					NULL,
+					_cairo_scaled_glyph_page_can_remove,
+					_cairo_scaled_glyph_page_pluck,
+					MAX_GLYPH_PAGES_CACHED);
+	    if (unlikely (status)) {
+		CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex);
+		free (page);
+		return status;
+	    }
+	}
+
+	_cairo_cache_freeze (&cairo_scaled_glyph_page_cache);
+	scaled_font->global_cache_frozen = TRUE;
+    }
+
+    status = _cairo_cache_insert (&cairo_scaled_glyph_page_cache,
+				  &page->cache_entry);
+    CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex);
+    if (unlikely (status)) {
+	free (page);
+	return status;
+    }
+
+    cairo_list_add_tail (&page->link, &scaled_font->glyph_pages);
+
+    *scaled_glyph = &page->glyphs[page->num_glyphs++];
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_scaled_font_free_last_glyph (cairo_scaled_font_t *scaled_font,
+			           cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_scaled_glyph_page_t *page;
+
+    assert (scaled_font->cache_frozen);
+    assert (! cairo_list_is_empty (&scaled_font->glyph_pages));
+    page = cairo_list_last_entry (&scaled_font->glyph_pages,
+                                  cairo_scaled_glyph_page_t,
+                                  link);
+    assert (scaled_glyph == &page->glyphs[page->num_glyphs-1]);
+
+    _cairo_scaled_glyph_fini (scaled_font, scaled_glyph);
+
+    if (--page->num_glyphs == 0) {
+	_cairo_scaled_font_thaw_cache (scaled_font);
+	CAIRO_MUTEX_LOCK (scaled_font->mutex);
+
+	CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex);
+	/* Temporarily disconnect callback to avoid recursive locking */
+	cairo_scaled_glyph_page_cache.entry_destroy = NULL;
+	_cairo_cache_remove (&cairo_scaled_glyph_page_cache,
+		             &page->cache_entry);
+	_cairo_scaled_glyph_page_destroy (scaled_font, page);
+	cairo_scaled_glyph_page_cache.entry_destroy = _cairo_scaled_glyph_page_pluck;
+	CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex);
+
+	CAIRO_MUTEX_UNLOCK (scaled_font->mutex);
+	_cairo_scaled_font_freeze_cache (scaled_font);
+    }
+}
+
+/**
+ * _cairo_scaled_glyph_lookup:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @index: the glyph to create
+ * @info: a #cairo_scaled_glyph_info_t marking which portions of
+ * the glyph should be filled in.
+ * @scaled_glyph_ret: a #cairo_scaled_glyph_t where the glyph
+ * is returned.
+ *
+ * If the desired info is not available, (for example, when trying to
+ * get INFO_PATH with a bitmapped font), this function will return
+ * %CAIRO_INT_STATUS_UNSUPPORTED.
+ *
+ * Note: This function must be called with the scaled font frozen, and it must
+ * remain frozen for as long as the @scaled_glyph_ret is alive. (If the scaled
+ * font was not frozen, then there is no guarantee that the glyph would not be
+ * evicted before you tried to access it.) See
+ * _cairo_scaled_font_freeze_cache() and _cairo_scaled_font_thaw_cache().
+ *
+ * Returns: a glyph with the requested portions filled in. Glyph
+ * lookup is cached and glyph will be automatically freed along
+ * with the scaled_font so no explicit free is required.
+ * @info can be one or more of:
+ *  %CAIRO_SCALED_GLYPH_INFO_METRICS - glyph metrics and bounding box
+ *  %CAIRO_SCALED_GLYPH_INFO_SURFACE - surface holding glyph image
+ *  %CAIRO_SCALED_GLYPH_INFO_PATH - path holding glyph outline in device space
+ **/
+cairo_int_status_t
+_cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font,
+			    unsigned long index,
+			    cairo_scaled_glyph_info_t info,
+			    cairo_scaled_glyph_t **scaled_glyph_ret)
+{
+    cairo_int_status_t		 status = CAIRO_INT_STATUS_SUCCESS;
+    cairo_scaled_glyph_t	*scaled_glyph;
+    cairo_scaled_glyph_info_t	 need_info;
+
+    *scaled_glyph_ret = NULL;
+
+    if (unlikely (scaled_font->status))
+	return scaled_font->status;
+
+    assert (CAIRO_MUTEX_IS_LOCKED(scaled_font->mutex));
+    assert (scaled_font->cache_frozen);
+
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /*
+     * Check cache for glyph
+     */
+    scaled_glyph = _cairo_hash_table_lookup (scaled_font->glyphs,
+					     (cairo_hash_entry_t *) &index);
+    if (scaled_glyph == NULL) {
+	status = _cairo_scaled_font_allocate_glyph (scaled_font, &scaled_glyph);
+	if (unlikely (status))
+	    goto err;
+
+	memset (scaled_glyph, 0, sizeof (cairo_scaled_glyph_t));
+	_cairo_scaled_glyph_set_index (scaled_glyph, index);
+	cairo_list_init (&scaled_glyph->dev_privates);
+
+	/* ask backend to initialize metrics and shape fields */
+	status =
+	    scaled_font->backend->scaled_glyph_init (scaled_font,
+						     scaled_glyph,
+						     info | CAIRO_SCALED_GLYPH_INFO_METRICS);
+	if (unlikely (status)) {
+	    _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph);
+	    goto err;
+	}
+
+	status = _cairo_hash_table_insert (scaled_font->glyphs,
+					   &scaled_glyph->hash_entry);
+	if (unlikely (status)) {
+	    _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph);
+	    goto err;
+	}
+    }
+
+    /*
+     * Check and see if the glyph, as provided,
+     * already has the requested data and amend it if not
+     */
+    need_info = info & ~scaled_glyph->has_info;
+    if (need_info) {
+	status = scaled_font->backend->scaled_glyph_init (scaled_font,
+							  scaled_glyph,
+							  need_info);
+	if (unlikely (status))
+	    goto err;
+
+	/* Don't trust the scaled_glyph_init() return value, the font
+	 * backend may not even know about some of the info.  For example,
+	 * no backend other than the user-fonts knows about recording-surface
+	 * glyph info. */
+	if (info & ~scaled_glyph->has_info)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    *scaled_glyph_ret = scaled_glyph;
+    return CAIRO_STATUS_SUCCESS;
+
+err:
+    /* It's not an error for the backend to not support the info we want. */
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	status = _cairo_scaled_font_set_error (scaled_font, status);
+    return status;
+}
+
+double
+_cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font)
+{
+    return scaled_font->max_scale;
+}
+
+
+/**
+ * cairo_scaled_font_get_font_face:
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Gets the font face that this scaled font uses.  This might be the
+ * font face passed to cairo_scaled_font_create(), but this does not
+ * hold true for all possible cases.
+ *
+ * Return value: The #cairo_font_face_t with which @scaled_font was
+ * created.  This object is owned by cairo. To keep a reference to it,
+ * you must call cairo_scaled_font_reference().
+ *
+ * Since: 1.2
+ **/
+cairo_font_face_t *
+cairo_scaled_font_get_font_face (cairo_scaled_font_t *scaled_font)
+{
+    if (scaled_font->status)
+	return (cairo_font_face_t*) &_cairo_font_face_nil;
+
+    if (scaled_font->original_font_face != NULL)
+	return scaled_font->original_font_face;
+
+    return scaled_font->font_face;
+}
+slim_hidden_def (cairo_scaled_font_get_font_face);
+
+/**
+ * cairo_scaled_font_get_font_matrix:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @font_matrix: return value for the matrix
+ *
+ * Stores the font matrix with which @scaled_font was created into
+ * @matrix.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_scaled_font_get_font_matrix (cairo_scaled_font_t	*scaled_font,
+				   cairo_matrix_t	*font_matrix)
+{
+    if (scaled_font->status) {
+	cairo_matrix_init_identity (font_matrix);
+	return;
+    }
+
+    *font_matrix = scaled_font->font_matrix;
+}
+slim_hidden_def (cairo_scaled_font_get_font_matrix);
+
+/**
+ * cairo_scaled_font_get_ctm:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @ctm: return value for the CTM
+ *
+ * Stores the CTM with which @scaled_font was created into @ctm.
+ * Note that the translation offsets (x0, y0) of the CTM are ignored
+ * by cairo_scaled_font_create().  So, the matrix this
+ * function returns always has 0,0 as x0,y0.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_scaled_font_get_ctm (cairo_scaled_font_t	*scaled_font,
+			   cairo_matrix_t	*ctm)
+{
+    if (scaled_font->status) {
+	cairo_matrix_init_identity (ctm);
+	return;
+    }
+
+    *ctm = scaled_font->ctm;
+}
+slim_hidden_def (cairo_scaled_font_get_ctm);
+
+/**
+ * cairo_scaled_font_get_scale_matrix:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @scale_matrix: return value for the matrix
+ *
+ * Stores the scale matrix of @scaled_font into @matrix.
+ * The scale matrix is product of the font matrix and the ctm
+ * associated with the scaled font, and hence is the matrix mapping from
+ * font space to device space.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_scaled_font_get_scale_matrix (cairo_scaled_font_t	*scaled_font,
+				    cairo_matrix_t	*scale_matrix)
+{
+    if (scaled_font->status) {
+	cairo_matrix_init_identity (scale_matrix);
+	return;
+    }
+
+    *scale_matrix = scaled_font->scale;
+}
+
+/**
+ * cairo_scaled_font_get_font_options:
+ * @scaled_font: a #cairo_scaled_font_t
+ * @options: return value for the font options
+ *
+ * Stores the font options with which @scaled_font was created into
+ * @options.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_scaled_font_get_font_options (cairo_scaled_font_t		*scaled_font,
+				    cairo_font_options_t	*options)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    if (scaled_font->status) {
+	_cairo_font_options_init_default (options);
+	return;
+    }
+
+    _cairo_font_options_init_copy (options, &scaled_font->options);
+}
+slim_hidden_def (cairo_scaled_font_get_font_options);
+
+cairo_bool_t
+_cairo_scaled_font_has_color_glyphs (cairo_scaled_font_t *scaled_font)
+{
+    if (scaled_font->backend != NULL && scaled_font->backend->has_color_glyphs != NULL)
+        return scaled_font->backend->has_color_glyphs (scaled_font);
+    else
+       return FALSE;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-script-private.h b/libs/cairo-1.16.0/src/cairo-script-private.h
new file mode 100644
index 0000000..5b506f5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-script-private.h
@@ -0,0 +1,59 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SCRIPT_PRIVATE_H
+#define CAIRO_SCRIPT_PRIVATE_H
+
+#include "cairo.h"
+#include "cairo-script.h"
+
+#include "cairo-compiler-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-types-private.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private cairo_device_t *
+_cairo_script_context_create_internal (cairo_output_stream_t *stream);
+
+cairo_private void
+_cairo_script_context_attach_snapshots (cairo_device_t *device,
+					cairo_bool_t enable);
+
+slim_hidden_proto (cairo_script_surface_create);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SCRIPT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-script-surface.c b/libs/cairo-1.16.0/src/cairo-script-surface.c
new file mode 100644
index 0000000..7db7dc5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-script-surface.c
@@ -0,0 +1,4003 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* The script surface is one that records all operations performed on
+ * it in the form of a procedural script, similar in fashion to
+ * PostScript but using Cairo's imaging model. In essence, this is
+ * equivalent to the recording-surface, but as there is no impedance mismatch
+ * between Cairo and CairoScript, we can generate output immediately
+ * without having to copy and hold the data in memory.
+ */
+
+/**
+ * SECTION:cairo-script
+ * @Title: Script Surfaces
+ * @Short_Description: Rendering to replayable scripts
+ * @See_Also: #cairo_surface_t
+ *
+ * The script surface provides the ability to render to a native
+ * script that matches the cairo drawing model. The scripts can
+ * be replayed using tools under the util/cairo-script directory,
+ * or with cairo-perf-trace.
+ **/
+
+/**
+ * CAIRO_HAS_SCRIPT_SURFACE:
+ *
+ * Defined if the script surface backend is available.
+ * The script surface backend is always built in since 1.12.
+ *
+ * Since: 1.12
+ **/
+
+
+#include "cairoint.h"
+
+#include "cairo-script.h"
+#include "cairo-script-private.h"
+
+#include "cairo-analysis-surface-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-device-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-surface-wrapper-private.h"
+
+#if CAIRO_HAS_FT_FONT
+#include "cairo-ft-private.h"
+#endif
+
+#include <ctype.h>
+
+#ifdef WORDS_BIGENDIAN
+#define to_be32(x) x
+#else
+#define to_be32(x) bswap_32(x)
+#endif
+
+#define _cairo_output_stream_puts(S, STR) \
+    _cairo_output_stream_write ((S), (STR), strlen (STR))
+
+#define static cairo_warn static
+
+typedef struct _cairo_script_context cairo_script_context_t;
+typedef struct _cairo_script_surface cairo_script_surface_t;
+typedef struct _cairo_script_implicit_context cairo_script_implicit_context_t;
+typedef struct _cairo_script_font cairo_script_font_t;
+
+typedef struct _operand {
+    enum {
+	SURFACE,
+	DEFERRED,
+    } type;
+    cairo_list_t link;
+} operand_t;
+
+
+struct deferred_finish {
+    cairo_list_t link;
+    operand_t operand;
+};
+
+struct _cairo_script_context {
+    cairo_device_t base;
+
+    int active;
+    int attach_snapshots;
+
+    cairo_bool_t owns_stream;
+    cairo_output_stream_t *stream;
+    cairo_script_mode_t mode;
+
+    struct _bitmap {
+	unsigned long min;
+	unsigned long count;
+	unsigned int map[64];
+	struct _bitmap *next;
+    } surface_id, font_id;
+
+    cairo_list_t operands;
+    cairo_list_t deferred;
+
+    cairo_list_t fonts;
+    cairo_list_t defines;
+};
+
+struct _cairo_script_font {
+    cairo_scaled_font_private_t base;
+
+    cairo_bool_t has_sfnt;
+    unsigned long id;
+    unsigned long subset_glyph_index;
+    cairo_list_t link;
+    cairo_scaled_font_t *parent;
+};
+
+struct _cairo_script_implicit_context {
+    cairo_operator_t current_operator;
+    cairo_fill_rule_t current_fill_rule;
+    double current_tolerance;
+    cairo_antialias_t current_antialias;
+    cairo_stroke_style_t current_style;
+    cairo_pattern_union_t current_source;
+    cairo_matrix_t current_ctm;
+    cairo_matrix_t current_stroke_matrix;
+    cairo_matrix_t current_font_matrix;
+    cairo_font_options_t current_font_options;
+    cairo_scaled_font_t *current_scaled_font;
+    cairo_path_fixed_t current_path;
+    cairo_bool_t has_clip;
+};
+
+struct _cairo_script_surface {
+    cairo_surface_t base;
+
+    cairo_surface_wrapper_t wrapper;
+
+    cairo_surface_clipper_t clipper;
+
+    operand_t operand;
+    cairo_bool_t emitted;
+    cairo_bool_t defined;
+    cairo_bool_t active;
+
+    double width, height;
+
+    /* implicit flattened context */
+    cairo_script_implicit_context_t cr;
+};
+
+static const cairo_surface_backend_t _cairo_script_surface_backend;
+
+static cairo_script_surface_t *
+_cairo_script_surface_create_internal (cairo_script_context_t *ctx,
+				       cairo_content_t content,
+				       cairo_rectangle_t *extents,
+				       cairo_surface_t *passthrough);
+
+static void
+_cairo_script_scaled_font_fini (cairo_scaled_font_private_t *abstract_private,
+				cairo_scaled_font_t *scaled_font);
+
+static void
+_cairo_script_implicit_context_init (cairo_script_implicit_context_t *cr);
+
+static void
+_cairo_script_implicit_context_reset (cairo_script_implicit_context_t *cr);
+
+static void
+_bitmap_release_id (struct _bitmap *b, unsigned long token)
+{
+    struct _bitmap **prev = NULL;
+
+    do {
+	if (token < b->min + sizeof (b->map) * CHAR_BIT) {
+	    unsigned int bit, elem;
+
+	    token -= b->min;
+	    elem = token / (sizeof (b->map[0]) * CHAR_BIT);
+	    bit  = token % (sizeof (b->map[0]) * CHAR_BIT);
+	    b->map[elem] &= ~(1 << bit);
+	    if (! --b->count && prev) {
+		*prev = b->next;
+		free (b);
+	    }
+	    return;
+	}
+	prev = &b->next;
+	b = b->next;
+    } while (b != NULL);
+}
+
+static cairo_status_t
+_bitmap_next_id (struct _bitmap *b,
+		 unsigned long *id)
+{
+    struct _bitmap *bb, **prev = NULL;
+    unsigned long min = 0;
+
+    do {
+	if (b->min != min)
+	    break;
+
+	if (b->count < sizeof (b->map) * CHAR_BIT) {
+	    unsigned int n, m, bit;
+	    for (n = 0; n < ARRAY_LENGTH (b->map); n++) {
+		if (b->map[n] == (unsigned int) -1)
+		    continue;
+
+		for (m=0, bit=1; m<sizeof (b->map[0])*CHAR_BIT; m++, bit<<=1) {
+		    if ((b->map[n] & bit) == 0) {
+			b->map[n] |= bit;
+			b->count++;
+			*id = n * sizeof (b->map[0])*CHAR_BIT + m + b->min;
+			return CAIRO_STATUS_SUCCESS;
+		    }
+		}
+	    }
+	}
+	min += sizeof (b->map) * CHAR_BIT;
+
+	prev = &b->next;
+	b = b->next;
+    } while (b != NULL);
+    assert (prev != NULL);
+
+    bb = _cairo_malloc (sizeof (struct _bitmap));
+    if (unlikely (bb == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    *prev = bb;
+    bb->next = b;
+    bb->min = min;
+    bb->count = 1;
+    bb->map[0] = 0x1;
+    memset (bb->map + 1, 0, sizeof (bb->map) - sizeof (bb->map[0]));
+    *id = min;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_bitmap_fini (struct _bitmap *b)
+{
+    while (b != NULL) {
+	struct _bitmap *next = b->next;
+	free (b);
+	b = next;
+    }
+}
+
+static const char *
+_direction_to_string (cairo_bool_t backward)
+{
+    static const char *names[] = {
+	"FORWARD",
+	"BACKWARD"
+    };
+    assert (backward < ARRAY_LENGTH (names));
+    return names[backward];
+}
+
+static const char *
+_operator_to_string (cairo_operator_t op)
+{
+    static const char *names[] = {
+	"CLEAR",	/* CAIRO_OPERATOR_CLEAR */
+
+	"SOURCE",	/* CAIRO_OPERATOR_SOURCE */
+	"OVER",		/* CAIRO_OPERATOR_OVER */
+	"IN",		/* CAIRO_OPERATOR_IN */
+	"OUT",		/* CAIRO_OPERATOR_OUT */
+	"ATOP",		/* CAIRO_OPERATOR_ATOP */
+
+	"DEST",		/* CAIRO_OPERATOR_DEST */
+	"DEST_OVER",	/* CAIRO_OPERATOR_DEST_OVER */
+	"DEST_IN",	/* CAIRO_OPERATOR_DEST_IN */
+	"DEST_OUT",	/* CAIRO_OPERATOR_DEST_OUT */
+	"DEST_ATOP",	/* CAIRO_OPERATOR_DEST_ATOP */
+
+	"XOR",		/* CAIRO_OPERATOR_XOR */
+	"ADD",		/* CAIRO_OPERATOR_ADD */
+	"SATURATE",	/* CAIRO_OPERATOR_SATURATE */
+
+	"MULTIPLY",	/* CAIRO_OPERATOR_MULTIPLY */
+	"SCREEN",	/* CAIRO_OPERATOR_SCREEN */
+	"OVERLAY",	/* CAIRO_OPERATOR_OVERLAY */
+	"DARKEN",	/* CAIRO_OPERATOR_DARKEN */
+	"LIGHTEN",	/* CAIRO_OPERATOR_LIGHTEN */
+	"DODGE",	/* CAIRO_OPERATOR_COLOR_DODGE */
+	"BURN",		/* CAIRO_OPERATOR_COLOR_BURN */
+	"HARD_LIGHT",	/* CAIRO_OPERATOR_HARD_LIGHT */
+	"SOFT_LIGHT",	/* CAIRO_OPERATOR_SOFT_LIGHT */
+	"DIFFERENCE",	/* CAIRO_OPERATOR_DIFFERENCE */
+	"EXCLUSION",	/* CAIRO_OPERATOR_EXCLUSION */
+	"HSL_HUE",	/* CAIRO_OPERATOR_HSL_HUE */
+	"HSL_SATURATION", /* CAIRO_OPERATOR_HSL_SATURATION */
+	"HSL_COLOR",	/* CAIRO_OPERATOR_HSL_COLOR */
+	"HSL_LUMINOSITY" /* CAIRO_OPERATOR_HSL_LUMINOSITY */
+    };
+    assert (op < ARRAY_LENGTH (names));
+    return names[op];
+}
+
+static const char *
+_extend_to_string (cairo_extend_t extend)
+{
+    static const char *names[] = {
+	"EXTEND_NONE",		/* CAIRO_EXTEND_NONE */
+	"EXTEND_REPEAT",	/* CAIRO_EXTEND_REPEAT */
+	"EXTEND_REFLECT",	/* CAIRO_EXTEND_REFLECT */
+	"EXTEND_PAD"		/* CAIRO_EXTEND_PAD */
+    };
+    assert (extend < ARRAY_LENGTH (names));
+    return names[extend];
+}
+
+static const char *
+_filter_to_string (cairo_filter_t filter)
+{
+    static const char *names[] = {
+	"FILTER_FAST",		/* CAIRO_FILTER_FAST */
+	"FILTER_GOOD",		/* CAIRO_FILTER_GOOD */
+	"FILTER_BEST",		/* CAIRO_FILTER_BEST */
+	"FILTER_NEAREST",	/* CAIRO_FILTER_NEAREST */
+	"FILTER_BILINEAR",	/* CAIRO_FILTER_BILINEAR */
+	"FILTER_GAUSSIAN",	/* CAIRO_FILTER_GAUSSIAN */
+    };
+    assert (filter < ARRAY_LENGTH (names));
+    return names[filter];
+}
+
+static const char *
+_fill_rule_to_string (cairo_fill_rule_t rule)
+{
+    static const char *names[] = {
+	"WINDING",	/* CAIRO_FILL_RULE_WINDING */
+	"EVEN_ODD"	/* CAIRO_FILL_RILE_EVEN_ODD */
+    };
+    assert (rule < ARRAY_LENGTH (names));
+    return names[rule];
+}
+
+static const char *
+_antialias_to_string (cairo_antialias_t antialias)
+{
+    static const char *names[] = {
+	"ANTIALIAS_DEFAULT",	/* CAIRO_ANTIALIAS_DEFAULT */
+	"ANTIALIAS_NONE",	/* CAIRO_ANTIALIAS_NONE */
+	"ANTIALIAS_GRAY",	/* CAIRO_ANTIALIAS_GRAY */
+	"ANTIALIAS_SUBPIXEL",	/* CAIRO_ANTIALIAS_SUBPIXEL */
+	"ANTIALIAS_FAST",	/* CAIRO_ANTIALIAS_FAST */
+	"ANTIALIAS_GOOD",	/* CAIRO_ANTIALIAS_GOOD */
+	"ANTIALIAS_BEST"	/* CAIRO_ANTIALIAS_BEST */
+    };
+    assert (antialias < ARRAY_LENGTH (names));
+    return names[antialias];
+}
+
+static const char *
+_line_cap_to_string (cairo_line_cap_t line_cap)
+{
+    static const char *names[] = {
+	"LINE_CAP_BUTT",	/* CAIRO_LINE_CAP_BUTT */
+	"LINE_CAP_ROUND",	/* CAIRO_LINE_CAP_ROUND */
+	"LINE_CAP_SQUARE"	/* CAIRO_LINE_CAP_SQUARE */
+    };
+    assert (line_cap < ARRAY_LENGTH (names));
+    return names[line_cap];
+}
+
+static const char *
+_line_join_to_string (cairo_line_join_t line_join)
+{
+    static const char *names[] = {
+	"LINE_JOIN_MITER",	/* CAIRO_LINE_JOIN_MITER */
+	"LINE_JOIN_ROUND",	/* CAIRO_LINE_JOIN_ROUND */
+	"LINE_JOIN_BEVEL",	/* CAIRO_LINE_JOIN_BEVEL */
+    };
+    assert (line_join < ARRAY_LENGTH (names));
+    return names[line_join];
+}
+
+static inline cairo_script_context_t *
+to_context (cairo_script_surface_t *surface)
+{
+    return (cairo_script_context_t *) surface->base.device;
+}
+
+static cairo_bool_t
+target_is_active (cairo_script_surface_t *surface)
+{
+    return cairo_list_is_first (&surface->operand.link,
+				&to_context (surface)->operands);
+}
+
+static void
+target_push (cairo_script_surface_t *surface)
+{
+    cairo_list_move (&surface->operand.link, &to_context (surface)->operands);
+}
+
+static int
+target_depth (cairo_script_surface_t *surface)
+{
+    cairo_list_t *link;
+    int depth = 0;
+
+    cairo_list_foreach (link, &to_context (surface)->operands) {
+	if (link == &surface->operand.link)
+	    break;
+	depth++;
+    }
+
+    return depth;
+}
+
+static void
+_get_target (cairo_script_surface_t *surface)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+
+    if (target_is_active (surface)) {
+	_cairo_output_stream_puts (ctx->stream, "dup ");
+	return;
+    }
+
+    if (surface->defined) {
+	_cairo_output_stream_printf (ctx->stream, "s%u ",
+				     surface->base.unique_id);
+    } else {
+	int depth = target_depth (surface);
+
+	assert (! cairo_list_is_empty (&surface->operand.link));
+	assert (! target_is_active (surface));
+
+	if (ctx->active) {
+	    _cairo_output_stream_printf (ctx->stream, "%d index ", depth);
+	    _cairo_output_stream_puts (ctx->stream, "/target get exch pop ");
+	} else {
+	    if (depth == 1) {
+		_cairo_output_stream_puts (ctx->stream, "exch ");
+	    } else {
+		_cairo_output_stream_printf (ctx->stream,
+					     "%d -1 roll ", depth);
+	    }
+	    target_push (surface);
+	    _cairo_output_stream_puts (ctx->stream, "dup ");
+	}
+    }
+}
+
+static const char *
+_content_to_string (cairo_content_t content)
+{
+    switch (content) {
+    case CAIRO_CONTENT_ALPHA: return "ALPHA";
+    case CAIRO_CONTENT_COLOR: return "COLOR";
+    default:
+    case CAIRO_CONTENT_COLOR_ALPHA: return "COLOR_ALPHA";
+    }
+}
+
+static cairo_status_t
+_emit_surface (cairo_script_surface_t *surface)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "<< /content //%s",
+				 _content_to_string (surface->base.content));
+    if (surface->width != -1 && surface->height != -1) {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /width %f /height %f",
+				     surface->width,
+				     surface->height);
+    }
+
+    if (surface->base.x_fallback_resolution !=
+	CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT ||
+	surface->base.y_fallback_resolution !=
+	CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT)
+    {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /fallback-resolution [%f %f]",
+				     surface->base.x_fallback_resolution,
+				     surface->base.y_fallback_resolution);
+    }
+
+    if (surface->base.device_transform.x0 != 0. ||
+	surface->base.device_transform.y0 != 0.)
+    {
+	/* XXX device offset is encoded into the pattern matrices etc. */
+	if (0) {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /device-offset [%f %f]",
+				     surface->base.device_transform.x0,
+				     surface->base.device_transform.y0);
+	}
+    }
+
+    _cairo_output_stream_puts (ctx->stream, " >> surface context\n");
+    surface->emitted = TRUE;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_context (cairo_script_surface_t *surface)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+
+    if (target_is_active (surface))
+	return CAIRO_STATUS_SUCCESS;
+
+    while (! cairo_list_is_empty (&ctx->operands)) {
+	operand_t *op;
+	cairo_script_surface_t *old;
+
+	op = cairo_list_first_entry (&ctx->operands,
+				     operand_t,
+				     link);
+	if (op->type == DEFERRED)
+	    break;
+
+	old = cairo_container_of (op, cairo_script_surface_t, operand);
+	if (old == surface)
+	    break;
+	if (old->active)
+	    break;
+
+	if (! old->defined) {
+	    assert (old->emitted);
+	    _cairo_output_stream_printf (ctx->stream,
+					 "/target get /s%u exch def pop\n",
+					 old->base.unique_id);
+	    old->defined = TRUE;
+	} else {
+	    _cairo_output_stream_puts (ctx->stream, "pop\n");
+	}
+
+	cairo_list_del (&old->operand.link);
+    }
+
+    if (target_is_active (surface))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! surface->emitted) {
+	cairo_status_t status;
+
+	status = _emit_surface (surface);
+	if (unlikely (status))
+	    return status;
+    } else if (cairo_list_is_empty (&surface->operand.link)) {
+	assert (surface->defined);
+	_cairo_output_stream_printf (ctx->stream,
+				     "s%u context\n",
+				     surface->base.unique_id);
+	_cairo_script_implicit_context_reset (&surface->cr);
+	_cairo_surface_clipper_reset (&surface->clipper);
+    } else {
+	int depth = target_depth (surface);
+	if (depth == 1) {
+	    _cairo_output_stream_puts (ctx->stream, "exch\n");
+	} else {
+	    _cairo_output_stream_printf (ctx->stream,
+					 "%d -1 roll\n",
+					 depth);
+	}
+    }
+    target_push (surface);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_operator (cairo_script_surface_t *surface,
+		cairo_operator_t op)
+{
+    assert (target_is_active (surface));
+
+    if (surface->cr.current_operator == op)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->cr.current_operator = op;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "//%s set-operator\n",
+				 _operator_to_string (op));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_fill_rule (cairo_script_surface_t *surface,
+		 cairo_fill_rule_t fill_rule)
+{
+    assert (target_is_active (surface));
+
+    if (surface->cr.current_fill_rule == fill_rule)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->cr.current_fill_rule = fill_rule;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "//%s set-fill-rule\n",
+				 _fill_rule_to_string (fill_rule));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_tolerance (cairo_script_surface_t *surface,
+		 double tolerance,
+		 cairo_bool_t force)
+{
+    assert (target_is_active (surface));
+
+    if ((! force ||
+	 fabs (tolerance - CAIRO_GSTATE_TOLERANCE_DEFAULT) < 1e-5) &&
+	surface->cr.current_tolerance == tolerance)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    surface->cr.current_tolerance = tolerance;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "%f set-tolerance\n",
+				 tolerance);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_antialias (cairo_script_surface_t *surface,
+		 cairo_antialias_t antialias)
+{
+    assert (target_is_active (surface));
+
+    if (surface->cr.current_antialias == antialias)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->cr.current_antialias = antialias;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "//%s set-antialias\n",
+				 _antialias_to_string (antialias));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_line_width (cairo_script_surface_t *surface,
+		 double line_width,
+		 cairo_bool_t force)
+{
+    assert (target_is_active (surface));
+
+    if ((! force ||
+	 fabs (line_width - CAIRO_GSTATE_LINE_WIDTH_DEFAULT) < 1e-5) &&
+	surface->cr.current_style.line_width == line_width)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    surface->cr.current_style.line_width = line_width;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "%f set-line-width\n",
+				 line_width);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_line_cap (cairo_script_surface_t *surface,
+		cairo_line_cap_t line_cap)
+{
+    assert (target_is_active (surface));
+
+    if (surface->cr.current_style.line_cap == line_cap)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->cr.current_style.line_cap = line_cap;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "//%s set-line-cap\n",
+				 _line_cap_to_string (line_cap));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_line_join (cairo_script_surface_t *surface,
+		 cairo_line_join_t line_join)
+{
+    assert (target_is_active (surface));
+
+    if (surface->cr.current_style.line_join == line_join)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->cr.current_style.line_join = line_join;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "//%s set-line-join\n",
+				 _line_join_to_string (line_join));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_miter_limit (cairo_script_surface_t *surface,
+		   double miter_limit,
+		   cairo_bool_t force)
+{
+    assert (target_is_active (surface));
+
+    if ((! force ||
+	 fabs (miter_limit - CAIRO_GSTATE_MITER_LIMIT_DEFAULT) < 1e-5) &&
+	surface->cr.current_style.miter_limit == miter_limit)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    surface->cr.current_style.miter_limit = miter_limit;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "%f set-miter-limit\n",
+				 miter_limit);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_dashes_equal (const double *a, const double *b, int num_dashes)
+{
+    while (num_dashes--) {
+	if (fabs (*a - *b) > 1e-5)
+	    return FALSE;
+	a++, b++;
+    }
+
+    return TRUE;
+}
+
+static cairo_status_t
+_emit_dash (cairo_script_surface_t *surface,
+	    const double *dash,
+	    unsigned int num_dashes,
+	    double offset,
+	    cairo_bool_t force)
+{
+    unsigned int n;
+
+    assert (target_is_active (surface));
+
+    if (force &&
+	num_dashes == 0 &&
+	surface->cr.current_style.num_dashes == 0)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (! force &&
+	(surface->cr.current_style.num_dashes == num_dashes &&
+	 (num_dashes == 0 ||
+	  (fabs (surface->cr.current_style.dash_offset - offset) < 1e-5 &&
+	   _dashes_equal (surface->cr.current_style.dash, dash, num_dashes)))))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+
+    if (num_dashes) {
+	surface->cr.current_style.dash = _cairo_realloc_ab
+	    (surface->cr.current_style.dash, num_dashes, sizeof (double));
+	if (unlikely (surface->cr.current_style.dash == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	memcpy (surface->cr.current_style.dash, dash,
+		sizeof (double) * num_dashes);
+    } else {
+	free (surface->cr.current_style.dash);
+	surface->cr.current_style.dash = NULL;
+    }
+
+    surface->cr.current_style.num_dashes = num_dashes;
+    surface->cr.current_style.dash_offset = offset;
+
+    _cairo_output_stream_puts (to_context (surface)->stream, "[");
+    for (n = 0; n < num_dashes; n++) {
+	_cairo_output_stream_printf (to_context (surface)->stream, "%f", dash[n]);
+	if (n < num_dashes-1)
+	    _cairo_output_stream_puts (to_context (surface)->stream, " ");
+    }
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "] %f set-dash\n",
+				 offset);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_stroke_style (cairo_script_surface_t *surface,
+		    const cairo_stroke_style_t *style,
+		    cairo_bool_t force)
+{
+    cairo_status_t status;
+
+    assert (target_is_active (surface));
+
+    status = _emit_line_width (surface, style->line_width, force);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_line_cap (surface, style->line_cap);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_line_join (surface, style->line_join);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_miter_limit (surface, style->miter_limit, force);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_dash (surface,
+			 style->dash, style->num_dashes, style->dash_offset,
+			 force);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const char *
+_format_to_string (cairo_format_t format)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:  return "ARGB32";
+    case CAIRO_FORMAT_RGB30:   return "RGB30";
+    case CAIRO_FORMAT_RGB24:   return "RGB24";
+    case CAIRO_FORMAT_RGB16_565: return "RGB16_565";
+    case CAIRO_FORMAT_A8:      return "A8";
+    case CAIRO_FORMAT_A1:      return "A1";
+    case CAIRO_FORMAT_INVALID: return "INVALID";
+    }
+    ASSERT_NOT_REACHED;
+    return "INVALID";
+}
+
+static cairo_status_t
+_emit_solid_pattern (cairo_script_surface_t *surface,
+		     const cairo_pattern_t *pattern)
+{
+    cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;
+    cairo_script_context_t *ctx = to_context (surface);
+
+    if (! CAIRO_COLOR_IS_OPAQUE (&solid->color))
+    {
+	if (! (surface->base.content & CAIRO_CONTENT_COLOR) ||
+	    ((solid->color.red_short   == 0 || solid->color.red_short   == 0xffff) &&
+	     (solid->color.green_short == 0 || solid->color.green_short == 0xffff) &&
+	     (solid->color.blue_short  == 0 || solid->color.blue_short  == 0xffff) ))
+	{
+	    _cairo_output_stream_printf (ctx->stream,
+					 "%f a",
+					 solid->color.alpha);
+	}
+	else
+	{
+	    _cairo_output_stream_printf (ctx->stream,
+					 "%f %f %f %f rgba",
+					 solid->color.red,
+					 solid->color.green,
+					 solid->color.blue,
+					 solid->color.alpha);
+	}
+    }
+    else
+    {
+	if (solid->color.red_short == solid->color.green_short &&
+	    solid->color.red_short == solid->color.blue_short)
+	{
+	    _cairo_output_stream_printf (ctx->stream,
+					 "%f g",
+					 solid->color.red);
+	}
+	else
+	{
+	    _cairo_output_stream_printf (ctx->stream,
+					 "%f %f %f rgb",
+					 solid->color.red,
+					 solid->color.green,
+					 solid->color.blue);
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+static cairo_status_t
+_emit_gradient_color_stops (cairo_gradient_pattern_t *gradient,
+			    cairo_output_stream_t *output)
+{
+    unsigned int n;
+
+    for (n = 0; n < gradient->n_stops; n++) {
+	_cairo_output_stream_printf (output,
+				     "\n  %f %f %f %f %f add-color-stop",
+				     gradient->stops[n].offset,
+				     gradient->stops[n].color.red,
+				     gradient->stops[n].color.green,
+				     gradient->stops[n].color.blue,
+				     gradient->stops[n].color.alpha);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_linear_pattern (cairo_script_surface_t *surface,
+		      const cairo_pattern_t *pattern)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_linear_pattern_t *linear;
+
+    linear = (cairo_linear_pattern_t *) pattern;
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "%f %f %f %f linear",
+				 linear->pd1.x, linear->pd1.y,
+				 linear->pd2.x, linear->pd2.y);
+    return _emit_gradient_color_stops (&linear->base, ctx->stream);
+}
+
+static cairo_status_t
+_emit_radial_pattern (cairo_script_surface_t *surface,
+		      const cairo_pattern_t *pattern)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_radial_pattern_t *radial;
+
+    radial = (cairo_radial_pattern_t *) pattern;
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "%f %f %f %f %f %f radial",
+				 radial->cd1.center.x,
+				 radial->cd1.center.y,
+				 radial->cd1.radius,
+				 radial->cd2.center.x,
+				 radial->cd2.center.y,
+				 radial->cd2.radius);
+    return _emit_gradient_color_stops (&radial->base, ctx->stream);
+}
+
+static cairo_status_t
+_emit_mesh_pattern (cairo_script_surface_t *surface,
+		    const cairo_pattern_t *pattern)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_pattern_t *mesh;
+    cairo_status_t status;
+    unsigned int i, n;
+
+    mesh = (cairo_pattern_t *) pattern;
+    status = cairo_mesh_pattern_get_patch_count (mesh, &n);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (ctx->stream, "mesh");
+    for (i = 0; i < n; i++) {
+	cairo_path_t *path;
+	cairo_path_data_t *data;
+	int j;
+
+	_cairo_output_stream_printf (ctx->stream, "\n  begin-patch");
+
+	path = cairo_mesh_pattern_get_path (mesh, i);
+	if (unlikely (path->status))
+	    return path->status;
+
+	for (j = 0; j < path->num_data; j+=data[0].header.length) {
+	    data = &path->data[j];
+	    switch (data->header.type) {
+	    case CAIRO_PATH_MOVE_TO:
+		_cairo_output_stream_printf (ctx->stream,
+					     "\n  %f %f m",
+					     data[1].point.x, data[1].point.y);
+		break;
+	    case CAIRO_PATH_LINE_TO:
+		_cairo_output_stream_printf (ctx->stream,
+					     "\n  %f %f l",
+					     data[1].point.x, data[1].point.y);
+		break;
+	    case CAIRO_PATH_CURVE_TO:
+		_cairo_output_stream_printf (ctx->stream,
+					     "\n  %f %f %f %f %f %f c",
+					     data[1].point.x, data[1].point.y,
+					     data[2].point.x, data[2].point.y,
+					     data[3].point.x, data[3].point.y);
+		break;
+	    case CAIRO_PATH_CLOSE_PATH:
+		break;
+	    }
+	}
+	cairo_path_destroy (path);
+
+	for (j = 0; j < 4; j++) {
+	    double x, y;
+
+	    status = cairo_mesh_pattern_get_control_point (mesh, i, j, &x, &y);
+	    if (unlikely (status))
+		return status;
+	    _cairo_output_stream_printf (ctx->stream,
+					 "\n  %d %f %f set-control-point",
+					 j, x, y);
+	}
+
+	for (j = 0; j < 4; j++) {
+	    double r, g, b, a;
+
+	    status = cairo_mesh_pattern_get_corner_color_rgba (mesh, i, j, &r, &g, &b, &a);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_output_stream_printf (ctx->stream,
+					 "\n  %d %f %f %f %f set-corner-color",
+					 j, r, g, b, a);
+	}
+
+	_cairo_output_stream_printf (ctx->stream, "\n  end-patch");
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct script_snapshot {
+    cairo_surface_t base;
+};
+
+static cairo_status_t
+script_snapshot_finish (void *abstract_surface)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t script_snapshot_backend = {
+    CAIRO_SURFACE_TYPE_SCRIPT,
+    script_snapshot_finish,
+};
+
+static void
+detach_snapshot (cairo_surface_t *abstract_surface)
+{
+    cairo_script_surface_t *surface = (cairo_script_surface_t *)abstract_surface;
+    cairo_script_context_t *ctx = to_context (surface);
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "/s%d undef\n",
+				 surface->base.unique_id);
+}
+
+static void
+attach_snapshot (cairo_script_context_t *ctx,
+		 cairo_surface_t *source)
+{
+    struct script_snapshot *surface;
+
+    if (! ctx->attach_snapshots)
+	return;
+
+    surface = _cairo_malloc (sizeof (*surface));
+    if (unlikely (surface == NULL))
+	return;
+
+    _cairo_surface_init (&surface->base,
+			 &script_snapshot_backend,
+			 &ctx->base,
+			 source->content,
+			 source->is_vector);
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "dup /s%d exch def ",
+				 surface->base.unique_id);
+
+    _cairo_surface_attach_snapshot (source, &surface->base, detach_snapshot);
+    cairo_surface_destroy (&surface->base);
+}
+
+static cairo_status_t
+_emit_recording_surface_pattern (cairo_script_surface_t *surface,
+				 cairo_recording_surface_t *source)
+{
+    cairo_script_implicit_context_t old_cr;
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_script_surface_t *similar;
+    cairo_surface_t *snapshot;
+    cairo_rectangle_t r, *extents;
+    cairo_status_t status;
+
+    snapshot = _cairo_surface_has_snapshot (&source->base, &script_snapshot_backend);
+    if (snapshot) {
+	_cairo_output_stream_printf (ctx->stream, "s%d", snapshot->unique_id);
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    extents = NULL;
+    if (_cairo_recording_surface_get_bounds (&source->base, &r))
+	extents = &r;
+
+    similar = _cairo_script_surface_create_internal (ctx,
+						     source->base.content,
+						     extents,
+						     NULL);
+    if (unlikely (similar->base.status))
+	return similar->base.status;
+
+    similar->base.is_clear = TRUE;
+
+    _cairo_output_stream_printf (ctx->stream, "//%s ",
+				 _content_to_string (source->base.content));
+    if (extents) {
+	_cairo_output_stream_printf (ctx->stream, "[%f %f %f %f]",
+				     extents->x, extents->y,
+				     extents->width, extents->height);
+    } else
+	_cairo_output_stream_puts (ctx->stream, "[]");
+    _cairo_output_stream_puts (ctx->stream, " record\n");
+
+    attach_snapshot (ctx, &source->base);
+
+    _cairo_output_stream_puts (ctx->stream, "dup context\n");
+
+    target_push (similar);
+    similar->emitted = TRUE;
+
+
+    old_cr = surface->cr;
+    _cairo_script_implicit_context_init (&surface->cr);
+    status = _cairo_recording_surface_replay (&source->base, &similar->base);
+    surface->cr = old_cr;
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (&similar->base);
+	return status;
+    }
+
+    cairo_list_del (&similar->operand.link);
+    assert (target_is_active (surface));
+
+    _cairo_output_stream_puts (ctx->stream, "pop ");
+    cairo_surface_destroy (&similar->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_script_surface_pattern (cairo_script_surface_t *surface,
+			      cairo_script_surface_t *source)
+{
+    _get_target (source);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_write_image_surface (cairo_output_stream_t *output,
+		      const cairo_image_surface_t *image)
+{
+    int row, width;
+    ptrdiff_t stride;
+    uint8_t row_stack[CAIRO_STACK_BUFFER_SIZE];
+    uint8_t *rowdata;
+    uint8_t *data;
+
+    stride = image->stride;
+    width = image->width;
+    data = image->data;
+#if WORDS_BIGENDIAN
+    switch (image->format) {
+    case CAIRO_FORMAT_A1:
+	for (row = image->height; row--; ) {
+	    _cairo_output_stream_write (output, data, (width+7)/8);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_A8:
+	for (row = image->height; row--; ) {
+	    _cairo_output_stream_write (output, data, width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	for (row = image->height; row--; ) {
+	    _cairo_output_stream_write (output, data, 2*width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_RGB24:
+	for (row = image->height; row--; ) {
+	    int col;
+	    rowdata = data;
+	    for (col = width; col--; ) {
+		_cairo_output_stream_write (output, rowdata, 3);
+		rowdata+=4;
+	    }
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_ARGB32:
+	for (row = image->height; row--; ) {
+	    _cairo_output_stream_write (output, data, 4*width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+#else
+    if (stride > ARRAY_LENGTH (row_stack)) {
+	rowdata = _cairo_malloc (stride);
+	if (unlikely (rowdata == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else
+	rowdata = row_stack;
+
+    switch (image->format) {
+    case CAIRO_FORMAT_A1:
+	for (row = image->height; row--; ) {
+	    int col;
+	    for (col = 0; col < (width + 7)/8; col++)
+		rowdata[col] = CAIRO_BITSWAP8 (data[col]);
+	    _cairo_output_stream_write (output, rowdata, (width+7)/8);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_A8:
+	for (row = image->height; row--; ) {
+	    _cairo_output_stream_write (output, data, width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	for (row = image->height; row--; ) {
+	    uint16_t *src = (uint16_t *) data;
+	    uint16_t *dst = (uint16_t *) rowdata;
+	    int col;
+	    for (col = 0; col < width; col++)
+		dst[col] = bswap_16 (src[col]);
+	    _cairo_output_stream_write (output, rowdata, 2*width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_RGB24:
+	for (row = image->height; row--; ) {
+	    uint8_t *src = data;
+	    int col;
+	    for (col = 0; col < width; col++) {
+		rowdata[3*col+2] = *src++;
+		rowdata[3*col+1] = *src++;
+		rowdata[3*col+0] = *src++;
+		src++;
+	    }
+	    _cairo_output_stream_write (output, rowdata, 3*width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_RGB30:
+    case CAIRO_FORMAT_ARGB32:
+	for (row = image->height; row--; ) {
+	    uint32_t *src = (uint32_t *) data;
+	    uint32_t *dst = (uint32_t *) rowdata;
+	    int col;
+	    for (col = 0; col < width; col++)
+		dst[col] = bswap_32 (src[col]);
+	    _cairo_output_stream_write (output, rowdata, 4*width);
+	    data += stride;
+	}
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+    if (rowdata != row_stack)
+	free (rowdata);
+#endif
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_png_surface (cairo_script_surface_t *surface,
+		   cairo_image_surface_t *image)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_output_stream_t *base85_stream;
+    cairo_status_t status;
+    const uint8_t *mime_data;
+    unsigned long mime_data_length;
+
+    cairo_surface_get_mime_data (&image->base, CAIRO_MIME_TYPE_PNG,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "<< "
+				 "/width %d "
+				 "/height %d "
+				 "/format //%s "
+				 "/mime-type (image/png) "
+				 "/source <~",
+				 image->width, image->height,
+				 _format_to_string (image->format));
+
+    base85_stream = _cairo_base85_stream_create (ctx->stream);
+    _cairo_output_stream_write (base85_stream, mime_data, mime_data_length);
+    status = _cairo_output_stream_destroy (base85_stream);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_puts (ctx->stream, "~> >> image ");
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_image_surface (cairo_script_surface_t *surface,
+		     cairo_image_surface_t *image)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_output_stream_t *base85_stream;
+    cairo_output_stream_t *zlib_stream;
+    cairo_int_status_t status, status2;
+    cairo_surface_t *snapshot;
+    const uint8_t *mime_data;
+    unsigned long mime_data_length;
+
+    snapshot = _cairo_surface_has_snapshot (&image->base,
+					    &script_snapshot_backend);
+    if (snapshot) {
+	_cairo_output_stream_printf (ctx->stream, "s%u ", snapshot->unique_id);
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    status = _emit_png_surface (surface, image);
+    if (_cairo_int_status_is_error (status)) {
+	return status;
+    } else if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_image_surface_t *clone;
+	uint32_t len;
+
+	if (image->format == CAIRO_FORMAT_INVALID) {
+	    clone = _cairo_image_surface_coerce (image);
+	} else {
+	    clone = (cairo_image_surface_t *)
+		cairo_surface_reference (&image->base);
+	}
+
+	_cairo_output_stream_printf (ctx->stream,
+				     "<< "
+				     "/width %d "
+				     "/height %d "
+				     "/format //%s "
+				     "/source ",
+				     clone->width, clone->height,
+				     _format_to_string (clone->format));
+
+	switch (clone->format) {
+	case CAIRO_FORMAT_A1:
+	    len = (clone->width + 7)/8;
+	    break;
+	case CAIRO_FORMAT_A8:
+	    len = clone->width;
+	    break;
+	case CAIRO_FORMAT_RGB16_565:
+	    len = clone->width * 2;
+	    break;
+	case CAIRO_FORMAT_RGB24:
+	    len = clone->width * 3;
+	    break;
+	case CAIRO_FORMAT_RGB30:
+	case CAIRO_FORMAT_ARGB32:
+	    len = clone->width * 4;
+	    break;
+	case CAIRO_FORMAT_INVALID:
+	default:
+	    ASSERT_NOT_REACHED;
+	    len = 0;
+	    break;
+	}
+	len *= clone->height;
+
+	if (len > 24) {
+	    _cairo_output_stream_puts (ctx->stream, "<|");
+
+	    base85_stream = _cairo_base85_stream_create (ctx->stream);
+
+	    len = to_be32 (len);
+	    _cairo_output_stream_write (base85_stream, &len, sizeof (len));
+
+	    zlib_stream = _cairo_deflate_stream_create (base85_stream);
+	    status = _write_image_surface (zlib_stream, clone);
+
+	    status2 = _cairo_output_stream_destroy (zlib_stream);
+	    if (status == CAIRO_INT_STATUS_SUCCESS)
+		status = status2;
+	    status2 = _cairo_output_stream_destroy (base85_stream);
+	    if (status == CAIRO_INT_STATUS_SUCCESS)
+		status = status2;
+	    if (unlikely (status))
+		return status;
+	} else {
+	    _cairo_output_stream_puts (ctx->stream, "<~");
+
+	    base85_stream = _cairo_base85_stream_create (ctx->stream);
+	    status = _write_image_surface (base85_stream, clone);
+	    status2 = _cairo_output_stream_destroy (base85_stream);
+	    if (status == CAIRO_INT_STATUS_SUCCESS)
+		status = status2;
+	    if (unlikely (status))
+		return status;
+	}
+	_cairo_output_stream_puts (ctx->stream, "~> >> image ");
+
+	cairo_surface_destroy (&clone->base);
+    }
+
+    cairo_surface_get_mime_data (&image->base, CAIRO_MIME_TYPE_JPEG,
+				 &mime_data, &mime_data_length);
+    if (mime_data != NULL) {
+	_cairo_output_stream_printf (ctx->stream,
+				     "\n  (%s) <~",
+				     CAIRO_MIME_TYPE_JPEG);
+
+	base85_stream = _cairo_base85_stream_create (ctx->stream);
+	_cairo_output_stream_write (base85_stream, mime_data, mime_data_length);
+	status = _cairo_output_stream_destroy (base85_stream);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_puts (ctx->stream, "~> set-mime-data\n");
+    }
+
+    cairo_surface_get_mime_data (&image->base, CAIRO_MIME_TYPE_JP2,
+				 &mime_data, &mime_data_length);
+    if (mime_data != NULL) {
+	_cairo_output_stream_printf (ctx->stream,
+				     "\n  (%s) <~",
+				     CAIRO_MIME_TYPE_JP2);
+
+	base85_stream = _cairo_base85_stream_create (ctx->stream);
+	_cairo_output_stream_write (base85_stream, mime_data, mime_data_length);
+	status = _cairo_output_stream_destroy (base85_stream);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_puts (ctx->stream, "~> set-mime-data\n");
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_image_surface_pattern (cairo_script_surface_t *surface,
+			     cairo_surface_t *source)
+{
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+    void *extra;
+
+    status = _cairo_surface_acquire_source_image (source, &image, &extra);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status = _emit_image_surface (surface, image);
+	_cairo_surface_release_source_image (source, image, extra);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_emit_subsurface_pattern (cairo_script_surface_t *surface,
+			  cairo_surface_subsurface_t *sub)
+{
+    cairo_surface_t *source = sub->target;
+    cairo_int_status_t status;
+
+    switch ((int) source->backend->type) {
+    case CAIRO_SURFACE_TYPE_RECORDING:
+	status = _emit_recording_surface_pattern (surface, (cairo_recording_surface_t *) source);
+	break;
+    case CAIRO_SURFACE_TYPE_SCRIPT:
+	status = _emit_script_surface_pattern (surface, (cairo_script_surface_t *) source);
+	break;
+    default:
+	status = _emit_image_surface_pattern (surface, source);
+	break;
+    }
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (to_context (surface)->stream,
+				 "%d %d %d %d subsurface ",
+				 sub->extents.x,
+				 sub->extents.y,
+				 sub->extents.width,
+				 sub->extents.height);
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_surface_pattern (cairo_script_surface_t *surface,
+		       const cairo_pattern_t *pattern)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_surface_pattern_t *surface_pattern;
+    cairo_surface_t *source, *snapshot, *free_me = NULL;
+    cairo_surface_t *take_snapshot = NULL;
+    cairo_int_status_t status;
+
+    surface_pattern = (cairo_surface_pattern_t *) pattern;
+    source = surface_pattern->surface;
+
+    if (_cairo_surface_is_snapshot (source)) {
+	snapshot = _cairo_surface_has_snapshot (source, &script_snapshot_backend);
+	if (snapshot) {
+	    _cairo_output_stream_printf (ctx->stream,
+					 "s%d pattern ",
+					 snapshot->unique_id);
+	    return CAIRO_INT_STATUS_SUCCESS;
+	}
+
+	if (_cairo_surface_snapshot_is_reused (source))
+	    take_snapshot = source;
+
+	free_me = source = _cairo_surface_snapshot_get_target (source);
+    }
+
+    switch ((int) source->backend->type) {
+    case CAIRO_SURFACE_TYPE_RECORDING:
+	status = _emit_recording_surface_pattern (surface, (cairo_recording_surface_t *) source);
+	break;
+    case CAIRO_SURFACE_TYPE_SCRIPT:
+	status = _emit_script_surface_pattern (surface, (cairo_script_surface_t *) source);
+	break;
+    case CAIRO_SURFACE_TYPE_SUBSURFACE:
+	status = _emit_subsurface_pattern (surface, (cairo_surface_subsurface_t *) source);
+	break;
+    default:
+	status = _emit_image_surface_pattern (surface, source);
+	break;
+    }
+    cairo_surface_destroy (free_me);
+    if (unlikely (status))
+	return status;
+
+    if (take_snapshot)
+	attach_snapshot (ctx, take_snapshot);
+
+    _cairo_output_stream_puts (ctx->stream, "pattern");
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_raster_pattern (cairo_script_surface_t *surface,
+		      const cairo_pattern_t *pattern)
+{
+    cairo_surface_t *source;
+    cairo_int_status_t status;
+
+    source = _cairo_raster_source_pattern_acquire (pattern, &surface->base, NULL);
+    if (unlikely (source == NULL)) {
+	ASSERT_NOT_REACHED;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+    if (unlikely (source->status))
+	return source->status;
+
+    status = _emit_image_surface_pattern (surface, source);
+    _cairo_raster_source_pattern_release (pattern, source);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_puts (to_context(surface)->stream, "pattern");
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_pattern (cairo_script_surface_t *surface,
+	       const cairo_pattern_t *pattern)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_int_status_t status;
+    cairo_bool_t is_default_extend;
+    cairo_bool_t need_newline = TRUE;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	/* solid colors do not need filter/extend/matrix */
+	return _emit_solid_pattern (surface, pattern);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	status = _emit_linear_pattern (surface, pattern);
+	is_default_extend = pattern->extend == CAIRO_EXTEND_GRADIENT_DEFAULT;
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	status = _emit_radial_pattern (surface, pattern);
+	is_default_extend = pattern->extend == CAIRO_EXTEND_GRADIENT_DEFAULT;
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	status = _emit_mesh_pattern (surface, pattern);
+	is_default_extend = TRUE;
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	status = _emit_surface_pattern (surface, pattern);
+	is_default_extend = pattern->extend == CAIRO_EXTEND_SURFACE_DEFAULT;
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	status = _emit_raster_pattern (surface, pattern);
+	is_default_extend = pattern->extend == CAIRO_EXTEND_SURFACE_DEFAULT;
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+    if (unlikely (status))
+	return status;
+
+    if (! _cairo_matrix_is_identity (&pattern->matrix)) {
+	if (need_newline) {
+	    _cairo_output_stream_puts (ctx->stream, "\n ");
+	    need_newline = FALSE;
+	}
+
+	_cairo_output_stream_printf (ctx->stream,
+				     " [%f %f %f %f %f %f] set-matrix\n ",
+				     pattern->matrix.xx, pattern->matrix.yx,
+				     pattern->matrix.xy, pattern->matrix.yy,
+				     pattern->matrix.x0, pattern->matrix.y0);
+    }
+
+    /* XXX need to discriminate the user explicitly setting the default */
+    if (pattern->filter != CAIRO_FILTER_DEFAULT) {
+	if (need_newline) {
+	    _cairo_output_stream_puts (ctx->stream, "\n ");
+	    need_newline = FALSE;
+	}
+
+	_cairo_output_stream_printf (ctx->stream,
+				     " //%s set-filter\n ",
+				     _filter_to_string (pattern->filter));
+    }
+    if (! is_default_extend ){
+	if (need_newline) {
+	    _cairo_output_stream_puts (ctx->stream, "\n ");
+	    need_newline = FALSE;
+	}
+
+	_cairo_output_stream_printf (ctx->stream,
+				     " //%s set-extend\n ",
+				     _extend_to_string (pattern->extend));
+    }
+
+    if (need_newline)
+	_cairo_output_stream_puts (ctx->stream, "\n ");
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_identity (cairo_script_surface_t *surface,
+		cairo_bool_t *matrix_updated)
+{
+    assert (target_is_active (surface));
+
+    if (_cairo_matrix_is_identity (&surface->cr.current_ctm))
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    _cairo_output_stream_puts (to_context (surface)->stream,
+			       "identity set-matrix\n");
+
+    *matrix_updated = TRUE;
+    cairo_matrix_init_identity (&surface->cr.current_ctm);
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_emit_source (cairo_script_surface_t *surface,
+	      cairo_operator_t op,
+	      const cairo_pattern_t *source)
+{
+    cairo_bool_t matrix_updated = FALSE;
+    cairo_int_status_t status;
+
+    assert (target_is_active (surface));
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	/* the source is ignored, so don't change it */
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    if (_cairo_pattern_equal (&surface->cr.current_source.base, source))
+	return CAIRO_INT_STATUS_SUCCESS;
+
+    _cairo_pattern_fini (&surface->cr.current_source.base);
+    status = _cairo_pattern_init_copy (&surface->cr.current_source.base,
+				       source);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_identity (surface, &matrix_updated);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_pattern (surface, source);
+    if (unlikely (status))
+	return status;
+
+    assert (target_is_active (surface));
+    _cairo_output_stream_puts (to_context (surface)->stream,
+			       " set-source\n");
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_path_move_to (void *closure,
+	       const cairo_point_t *point)
+{
+    _cairo_output_stream_printf (closure,
+				 " %f %f m",
+				 _cairo_fixed_to_double (point->x),
+				 _cairo_fixed_to_double (point->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_path_line_to (void *closure,
+	       const cairo_point_t *point)
+{
+    _cairo_output_stream_printf (closure,
+				 " %f %f l",
+				 _cairo_fixed_to_double (point->x),
+				 _cairo_fixed_to_double (point->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_path_curve_to (void *closure,
+		const cairo_point_t *p1,
+		const cairo_point_t *p2,
+		const cairo_point_t *p3)
+{
+    _cairo_output_stream_printf (closure,
+				 " %f %f %f %f %f %f c",
+				 _cairo_fixed_to_double (p1->x),
+				 _cairo_fixed_to_double (p1->y),
+				 _cairo_fixed_to_double (p2->x),
+				 _cairo_fixed_to_double (p2->y),
+				 _cairo_fixed_to_double (p3->x),
+				 _cairo_fixed_to_double (p3->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_path_close (void *closure)
+{
+    _cairo_output_stream_printf (closure,
+				 " h");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_path_boxes (cairo_script_surface_t *surface,
+		  const cairo_path_fixed_t *path)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_path_fixed_iter_t iter;
+    cairo_status_t status;
+    struct _cairo_boxes_chunk *chunk;
+    cairo_boxes_t boxes;
+    cairo_box_t box;
+    int i;
+
+    _cairo_boxes_init (&boxes);
+    _cairo_path_fixed_iter_init (&iter, path);
+    while (_cairo_path_fixed_iter_is_fill_box (&iter, &box)) {
+	if (box.p1.y == box.p2.y || box.p1.x == box.p2.x)
+	    continue;
+
+	status = _cairo_boxes_add (&boxes, CAIRO_ANTIALIAS_DEFAULT, &box);
+	if (unlikely (status)) {
+	    _cairo_boxes_fini (&boxes);
+	    return status;
+	}
+    }
+
+    if (! _cairo_path_fixed_iter_at_end (&iter)) {
+	_cairo_boxes_fini (&boxes);
+	return CAIRO_STATUS_INVALID_PATH_DATA;
+    }
+
+    for (chunk = &boxes.chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    const cairo_box_t *b = &chunk->base[i];
+	    double x1 = _cairo_fixed_to_double (b->p1.x);
+	    double y1 = _cairo_fixed_to_double (b->p1.y);
+	    double x2 = _cairo_fixed_to_double (b->p2.x);
+	    double y2 = _cairo_fixed_to_double (b->p2.y);
+
+	    _cairo_output_stream_printf (ctx->stream,
+					 "\n  %f %f %f %f rectangle",
+					 x1, y1, x2 - x1, y2 - y1);
+	}
+    }
+
+    _cairo_boxes_fini (&boxes);
+    return status;
+}
+
+static cairo_status_t
+_emit_path (cairo_script_surface_t *surface,
+	    const cairo_path_fixed_t *path,
+	    cairo_bool_t is_fill)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_box_t box;
+    cairo_int_status_t status;
+
+    assert (target_is_active (surface));
+    assert (_cairo_matrix_is_identity (&surface->cr.current_ctm));
+
+    if (_cairo_path_fixed_equal (&surface->cr.current_path, path))
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_path_fixed_fini (&surface->cr.current_path);
+
+    _cairo_output_stream_puts (ctx->stream, "n");
+
+    if (path == NULL) {
+	_cairo_path_fixed_init (&surface->cr.current_path);
+	_cairo_output_stream_puts (ctx->stream, "\n");
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = _cairo_path_fixed_init_copy (&surface->cr.current_path, path);
+    if (unlikely (status))
+	return status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_is_rectangle (path, &box)) {
+	double x1 = _cairo_fixed_to_double (box.p1.x);
+	double y1 = _cairo_fixed_to_double (box.p1.y);
+	double x2 = _cairo_fixed_to_double (box.p2.x);
+	double y2 = _cairo_fixed_to_double (box.p2.y);
+
+	assert (x1 > -9999);
+
+	_cairo_output_stream_printf (ctx->stream,
+				     " %f %f %f %f rectangle",
+				     x1, y1, x2 - x1, y2 - y1);
+	status = CAIRO_INT_STATUS_SUCCESS;
+    } else if (is_fill && _cairo_path_fixed_fill_is_rectilinear (path)) {
+	status = _emit_path_boxes (surface, path);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	status = _cairo_path_fixed_interpret (path,
+					      _path_move_to,
+					      _path_line_to,
+					      _path_curve_to,
+					      _path_close,
+					      ctx->stream);
+    }
+
+    _cairo_output_stream_puts (ctx->stream, "\n");
+
+    return status;
+}
+static cairo_bool_t
+_scaling_matrix_equal (const cairo_matrix_t *a,
+		       const cairo_matrix_t *b)
+{
+    return fabs (a->xx - b->xx) < 1e-5 &&
+	   fabs (a->xy - b->xy) < 1e-5 &&
+	   fabs (a->yx - b->yx) < 1e-5 &&
+	   fabs (a->yy - b->yy) < 1e-5;
+}
+
+static cairo_status_t
+_emit_scaling_matrix (cairo_script_surface_t *surface,
+		      const cairo_matrix_t *ctm,
+		      cairo_bool_t *matrix_updated)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_bool_t was_identity;
+    assert (target_is_active (surface));
+
+    if (_scaling_matrix_equal (&surface->cr.current_ctm, ctm))
+	return CAIRO_STATUS_SUCCESS;
+
+    was_identity = _cairo_matrix_is_identity (&surface->cr.current_ctm);
+
+    *matrix_updated = TRUE;
+    surface->cr.current_ctm = *ctm;
+    surface->cr.current_ctm.x0 = 0.;
+    surface->cr.current_ctm.y0 = 0.;
+
+    if (_cairo_matrix_is_identity (&surface->cr.current_ctm)) {
+	_cairo_output_stream_puts (ctx->stream,
+				   "identity set-matrix\n");
+    } else if (was_identity && fabs (ctm->yx) < 1e-5 && fabs (ctm->xy) < 1e-5) {
+	_cairo_output_stream_printf (ctx->stream,
+				     "%f %f scale\n",
+				     ctm->xx, ctm->yy);
+    } else {
+	_cairo_output_stream_printf (ctx->stream,
+				     "[%f %f %f %f 0 0] set-matrix\n",
+				     ctm->xx, ctm->yx,
+				     ctm->xy, ctm->yy);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_font_matrix (cairo_script_surface_t *surface,
+		   const cairo_matrix_t *font_matrix)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    assert (target_is_active (surface));
+
+    if (memcmp (&surface->cr.current_font_matrix,
+		font_matrix,
+		sizeof (cairo_matrix_t)) == 0)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    surface->cr.current_font_matrix = *font_matrix;
+
+    if (_cairo_matrix_is_identity (font_matrix)) {
+	_cairo_output_stream_puts (ctx->stream,
+				   "identity set-font-matrix\n");
+    } else {
+	_cairo_output_stream_printf (ctx->stream,
+				     "[%f %f %f %f %f %f] set-font-matrix\n",
+				     font_matrix->xx, font_matrix->yx,
+				     font_matrix->xy, font_matrix->yy,
+				     font_matrix->x0, font_matrix->y0);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_script_surface_create_similar (void	       *abstract_surface,
+				      cairo_content_t	content,
+				      int		width,
+				      int		height)
+{
+    cairo_script_surface_t *surface, *other = abstract_surface;
+    cairo_surface_t *passthrough = NULL;
+    cairo_script_context_t *ctx;
+    cairo_rectangle_t extents;
+    cairo_status_t status;
+
+    ctx = to_context (other);
+
+    status = cairo_device_acquire (&ctx->base);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (! other->emitted) {
+	status = _emit_surface (other);
+	if (unlikely (status)) {
+	    cairo_device_release (&ctx->base);
+	    return _cairo_surface_create_in_error (status);
+	}
+
+	target_push (other);
+    }
+
+    if (_cairo_surface_wrapper_is_active (&other->wrapper)) {
+	passthrough =
+	    _cairo_surface_wrapper_create_similar (&other->wrapper,
+						   content, width, height);
+	if (unlikely (passthrough->status)) {
+	    cairo_device_release (&ctx->base);
+	    return passthrough;
+	}
+    }
+
+    extents.x = extents.y = 0;
+    extents.width = width;
+    extents.height = height;
+    surface = _cairo_script_surface_create_internal (ctx, content,
+						     &extents, passthrough);
+    cairo_surface_destroy (passthrough);
+
+    if (unlikely (surface->base.status)) {
+	cairo_device_release (&ctx->base);
+	return &surface->base;
+    }
+
+    _get_target (other);
+    _cairo_output_stream_printf (ctx->stream,
+				 "%u %u //%s similar dup /s%u exch def context\n",
+				 width, height,
+				 _content_to_string (content),
+				 surface->base.unique_id);
+
+    surface->emitted = TRUE;
+    surface->defined = TRUE;
+    surface->base.is_clear = TRUE;
+    target_push (surface);
+
+    cairo_device_release (&ctx->base);
+    return &surface->base;
+}
+
+static cairo_status_t
+_device_flush (void *abstract_device)
+{
+    cairo_script_context_t *ctx = abstract_device;
+
+    return _cairo_output_stream_flush (ctx->stream);
+}
+
+static void
+_device_destroy (void *abstract_device)
+{
+    cairo_script_context_t *ctx = abstract_device;
+    cairo_status_t status;
+
+    while (! cairo_list_is_empty (&ctx->fonts)) {
+	cairo_script_font_t *font;
+
+	font = cairo_list_first_entry (&ctx->fonts, cairo_script_font_t, link);
+	cairo_list_del (&font->base.link);
+	cairo_list_del (&font->link);
+	free (font);
+    }
+
+    _bitmap_fini (ctx->surface_id.next);
+    _bitmap_fini (ctx->font_id.next);
+
+    if (ctx->owns_stream)
+	status = _cairo_output_stream_destroy (ctx->stream);
+
+    free (ctx);
+}
+
+static cairo_surface_t *
+_cairo_script_surface_source (void                    *abstract_surface,
+			      cairo_rectangle_int_t	*extents)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+
+    if (extents) {
+	extents->x = extents->y = 0;
+	extents->width  = surface->width;
+	extents->height = surface->height;
+    }
+
+    return &surface->base;
+}
+
+static cairo_status_t
+_cairo_script_surface_acquire_source_image (void                    *abstract_surface,
+					    cairo_image_surface_t  **image_out,
+					    void                   **image_extra)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)) {
+	return _cairo_surface_wrapper_acquire_source_image (&surface->wrapper,
+							    image_out,
+							    image_extra);
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static void
+_cairo_script_surface_release_source_image (void                   *abstract_surface,
+					   cairo_image_surface_t  *image,
+					   void                   *image_extra)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+
+    assert (_cairo_surface_wrapper_is_active (&surface->wrapper));
+    _cairo_surface_wrapper_release_source_image (&surface->wrapper,
+						 image,
+						 image_extra);
+}
+
+static cairo_status_t
+_cairo_script_surface_finish (void *abstract_surface)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_status_t status = CAIRO_STATUS_SUCCESS, status2;
+
+    _cairo_surface_wrapper_fini (&surface->wrapper);
+
+    free (surface->cr.current_style.dash);
+    surface->cr.current_style.dash = NULL;
+
+    _cairo_pattern_fini (&surface->cr.current_source.base);
+    _cairo_path_fixed_fini (&surface->cr.current_path);
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    status = cairo_device_acquire (&ctx->base);
+    if (unlikely (status))
+	return status;
+
+    if (surface->emitted) {
+	assert (! surface->active);
+
+	if (! cairo_list_is_empty (&surface->operand.link)) {
+	    if (! ctx->active) {
+		if (target_is_active (surface)) {
+		    _cairo_output_stream_printf (ctx->stream,
+						 "pop\n");
+		} else {
+		    int depth = target_depth (surface);
+		    if (depth == 1) {
+			_cairo_output_stream_printf (ctx->stream,
+						     "exch pop\n");
+		    } else {
+			_cairo_output_stream_printf (ctx->stream,
+						     "%d -1 roll pop\n",
+						     depth);
+		    }
+		}
+		cairo_list_del (&surface->operand.link);
+	    } else {
+		struct deferred_finish *link = _cairo_malloc (sizeof (*link));
+		if (link == NULL) {
+		    status2 = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		    if (status == CAIRO_STATUS_SUCCESS)
+			status = status2;
+		    cairo_list_del (&surface->operand.link);
+		} else {
+		    link->operand.type = DEFERRED;
+		    cairo_list_swap (&link->operand.link,
+				     &surface->operand.link);
+		    cairo_list_add (&link->link, &ctx->deferred);
+		}
+	    }
+	}
+
+	if (surface->defined) {
+	    _cairo_output_stream_printf (ctx->stream,
+					 "/s%u undef\n",
+					 surface->base.unique_id);
+	}
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = _cairo_output_stream_flush (to_context (surface)->stream);
+
+    cairo_device_release (&ctx->base);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_script_surface_copy_page (void *abstract_surface)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (surface->base.device);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    _cairo_output_stream_puts (to_context (surface)->stream, "copy-page\n");
+
+BAIL:
+    cairo_device_release (surface->base.device);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_script_surface_show_page (void *abstract_surface)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (surface->base.device);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    _cairo_output_stream_puts (to_context (surface)->stream, "show-page\n");
+
+BAIL:
+    cairo_device_release (surface->base.device);
+    return status;
+}
+
+static cairo_status_t
+_cairo_script_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+						   cairo_path_fixed_t	*path,
+						   cairo_fill_rule_t	 fill_rule,
+						   double		 tolerance,
+						   cairo_antialias_t	 antialias)
+{
+    cairo_script_surface_t *surface = cairo_container_of (clipper,
+							  cairo_script_surface_t,
+							  clipper);
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_bool_t matrix_updated = FALSE;
+    cairo_status_t status;
+    cairo_box_t box;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	return status;
+
+    if (path == NULL) {
+	if (surface->cr.has_clip) {
+	    _cairo_output_stream_puts (ctx->stream, "reset-clip\n");
+	    surface->cr.has_clip = FALSE;
+	}
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* skip the trivial clip covering the surface extents */
+    if (surface->width >= 0 && surface->height >= 0 &&
+	_cairo_path_fixed_is_box (path, &box))
+    {
+	if (box.p1.x <= 0 && box.p1.y <= 0 &&
+	    box.p2.x >= _cairo_fixed_from_double (surface->width) &&
+	    box.p2.y >= _cairo_fixed_from_double (surface->height))
+	{
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    status = _emit_identity (surface, &matrix_updated);
+    if (unlikely (status))
+	return status;
+
+    status = _emit_fill_rule (surface, fill_rule);
+    if (unlikely (status))
+	return status;
+
+    if (path->has_curve_to) {
+	status = _emit_tolerance (surface, tolerance, matrix_updated);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (! _cairo_path_fixed_fill_maybe_region (path)) {
+	status = _emit_antialias (surface, antialias);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = _emit_path (surface, path, TRUE);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_puts (ctx->stream, "clip+\n");
+    surface->cr.has_clip = TRUE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+active (cairo_script_surface_t *surface)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (surface->base.device);
+    if (unlikely (status))
+	return status;
+
+    if (surface->active++ == 0)
+	to_context (surface)->active++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+inactive (cairo_script_surface_t *surface)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_list_t sorted;
+
+    assert (surface->active > 0);
+    if (--surface->active)
+	goto DONE;
+
+    assert (ctx->active > 0);
+    if (--ctx->active)
+	goto DONE;
+
+    cairo_list_init (&sorted);
+    while (! cairo_list_is_empty (&ctx->deferred)) {
+	struct deferred_finish *df;
+	cairo_list_t *operand;
+	int depth;
+
+	df = cairo_list_first_entry (&ctx->deferred,
+				     struct deferred_finish,
+				     link);
+
+	depth = 0;
+	cairo_list_foreach (operand, &ctx->operands) {
+	    if (operand == &df->operand.link)
+		break;
+	    depth++;
+	}
+
+	df->operand.type = depth;
+
+	if (cairo_list_is_empty (&sorted)) {
+	    cairo_list_move (&df->link, &sorted);
+	} else {
+	    struct deferred_finish *pos;
+
+	    cairo_list_foreach_entry (pos, struct deferred_finish,
+				      &sorted,
+				      link)
+	    {
+		if (df->operand.type < pos->operand.type)
+		    break;
+	    }
+	    cairo_list_move_tail (&df->link, &pos->link);
+	}
+    }
+
+    while (! cairo_list_is_empty (&sorted)) {
+	struct deferred_finish *df;
+	cairo_list_t *operand;
+	int depth;
+
+	df = cairo_list_first_entry (&sorted,
+				     struct deferred_finish,
+				     link);
+
+	depth = 0;
+	cairo_list_foreach (operand, &ctx->operands) {
+	    if (operand == &df->operand.link)
+		break;
+	    depth++;
+	}
+
+	if (depth == 0) {
+	    _cairo_output_stream_printf (ctx->stream,
+					 "pop\n");
+	} else if (depth == 1) {
+	    _cairo_output_stream_printf (ctx->stream,
+					 "exch pop\n");
+	} else {
+	    _cairo_output_stream_printf (ctx->stream,
+					 "%d -1 roll pop\n",
+					 depth);
+	}
+
+	cairo_list_del (&df->operand.link);
+	cairo_list_del (&df->link);
+	free (df);
+    }
+
+DONE:
+    cairo_device_release (surface->base.device);
+}
+
+static cairo_int_status_t
+_cairo_script_surface_paint (void			*abstract_surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     const cairo_clip_t		*clip)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = active (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_source (surface, op, source);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_operator (surface, op);
+    if (unlikely (status))
+	goto BAIL;
+
+    _cairo_output_stream_puts (to_context (surface)->stream,
+			       "paint\n");
+
+    inactive (surface);
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)) {
+	return _cairo_surface_wrapper_paint (&surface->wrapper,
+					     op, source, clip);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+BAIL:
+    inactive (surface);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_script_surface_mask (void			*abstract_surface,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    const cairo_pattern_t	*mask,
+			    const cairo_clip_t		*clip)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = active (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_source (surface, op, source);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_operator (surface, op);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (_cairo_pattern_equal (source, mask)) {
+	_cairo_output_stream_puts (to_context (surface)->stream, "/source get");
+    } else {
+	status = _emit_pattern (surface, mask);
+	if (unlikely (status))
+	    goto BAIL;
+    }
+
+    assert (surface->cr.current_operator == op);
+
+    _cairo_output_stream_puts (to_context (surface)->stream,
+			       " mask\n");
+
+    inactive (surface);
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)) {
+	return _cairo_surface_wrapper_mask (&surface->wrapper,
+					    op, source, mask, clip);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+BAIL:
+    inactive (surface);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_script_surface_stroke (void				*abstract_surface,
+			      cairo_operator_t			 op,
+			      const cairo_pattern_t		*source,
+			      const cairo_path_fixed_t		*path,
+			      const cairo_stroke_style_t	*style,
+			      const cairo_matrix_t		*ctm,
+			      const cairo_matrix_t		*ctm_inverse,
+			      double				 tolerance,
+			      cairo_antialias_t			 antialias,
+			      const cairo_clip_t		*clip)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_bool_t matrix_updated = FALSE;
+    cairo_status_t status;
+
+    status = active (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_identity (surface, &matrix_updated);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_path (surface, path, FALSE);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_source (surface, op, source);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_scaling_matrix (surface, ctm, &matrix_updated);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_operator (surface, op);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (_scaling_matrix_equal (&surface->cr.current_ctm,
+			       &surface->cr.current_stroke_matrix))
+    {
+	matrix_updated = FALSE;
+    }
+    else
+    {
+	matrix_updated = TRUE;
+	surface->cr.current_stroke_matrix = surface->cr.current_ctm;
+    }
+
+    status = _emit_stroke_style (surface, style, matrix_updated);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_tolerance (surface, tolerance, matrix_updated);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_antialias (surface, antialias);
+    if (unlikely (status))
+	goto BAIL;
+
+    _cairo_output_stream_puts (to_context (surface)->stream, "stroke+\n");
+
+    inactive (surface);
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)) {
+	return _cairo_surface_wrapper_stroke (&surface->wrapper,
+					      op, source, path,
+					      style,
+					      ctm, ctm_inverse,
+					      tolerance, antialias,
+					      clip);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+BAIL:
+    inactive (surface);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_script_surface_fill (void			*abstract_surface,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    const cairo_path_fixed_t	*path,
+			    cairo_fill_rule_t		 fill_rule,
+			    double			 tolerance,
+			    cairo_antialias_t		 antialias,
+			    const cairo_clip_t		*clip)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_bool_t matrix_updated = FALSE;
+    cairo_status_t status;
+    cairo_box_t box;
+
+    status = active (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_identity (surface, &matrix_updated);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_source (surface, op, source);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (! _cairo_path_fixed_is_box (path, &box)) {
+	status = _emit_fill_rule (surface, fill_rule);
+	if (unlikely (status))
+	    goto BAIL;
+    }
+
+    if (path->has_curve_to) {
+	status = _emit_tolerance (surface, tolerance, matrix_updated);
+	if (unlikely (status))
+	    goto BAIL;
+    }
+
+    if (! _cairo_path_fixed_fill_maybe_region (path)) {
+	status = _emit_antialias (surface, antialias);
+	if (unlikely (status))
+	    goto BAIL;
+    }
+
+    status = _emit_path (surface, path, TRUE);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_operator (surface, op);
+    if (unlikely (status))
+	goto BAIL;
+
+    _cairo_output_stream_puts (to_context (surface)->stream, "fill+\n");
+
+    inactive (surface);
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)) {
+	return _cairo_surface_wrapper_fill (&surface->wrapper,
+					    op, source, path,
+					    fill_rule,
+					    tolerance,
+					    antialias,
+					    clip);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+BAIL:
+    inactive (surface);
+    return status;
+}
+
+static cairo_surface_t *
+_cairo_script_surface_snapshot (void *abstract_surface)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper))
+	return _cairo_surface_wrapper_snapshot (&surface->wrapper);
+
+    return NULL;
+}
+
+static cairo_bool_t
+_cairo_script_surface_has_show_text_glyphs (void *abstract_surface)
+{
+    return TRUE;
+}
+
+static const char *
+_subpixel_order_to_string (cairo_subpixel_order_t subpixel_order)
+{
+    static const char *names[] = {
+	"SUBPIXEL_ORDER_DEFAULT",	/* CAIRO_SUBPIXEL_ORDER_DEFAULT */
+	"SUBPIXEL_ORDER_RGB",		/* CAIRO_SUBPIXEL_ORDER_RGB */
+	"SUBPIXEL_ORDER_BGR",		/* CAIRO_SUBPIXEL_ORDER_BGR */
+	"SUBPIXEL_ORDER_VRGB",		/* CAIRO_SUBPIXEL_ORDER_VRGB */
+	"SUBPIXEL_ORDER_VBGR"		/* CAIRO_SUBPIXEL_ORDER_VBGR */
+    };
+    return names[subpixel_order];
+}
+static const char *
+_hint_style_to_string (cairo_hint_style_t hint_style)
+{
+    static const char *names[] = {
+	"HINT_STYLE_DEFAULT",	/* CAIRO_HINT_STYLE_DEFAULT */
+	"HINT_STYLE_NONE",	/* CAIRO_HINT_STYLE_NONE */
+	"HINT_STYLE_SLIGHT",	/* CAIRO_HINT_STYLE_SLIGHT */
+	"HINT_STYLE_MEDIUM",	/* CAIRO_HINT_STYLE_MEDIUM */
+	"HINT_STYLE_FULL"	/* CAIRO_HINT_STYLE_FULL */
+    };
+    return names[hint_style];
+}
+static const char *
+_hint_metrics_to_string (cairo_hint_metrics_t hint_metrics)
+{
+    static const char *names[] = {
+	 "HINT_METRICS_DEFAULT",	/* CAIRO_HINT_METRICS_DEFAULT */
+	 "HINT_METRICS_OFF",		/* CAIRO_HINT_METRICS_OFF */
+	 "HINT_METRICS_ON"		/* CAIRO_HINT_METRICS_ON */
+    };
+    return names[hint_metrics];
+}
+
+static cairo_status_t
+_emit_font_options (cairo_script_surface_t *surface,
+		    cairo_font_options_t *font_options)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+
+    if (cairo_font_options_equal (&surface->cr.current_font_options,
+				  font_options))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_output_stream_printf (ctx->stream, "<<");
+
+    if (font_options->antialias != surface->cr.current_font_options.antialias) {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /antialias //%s",
+				     _antialias_to_string (font_options->antialias));
+    }
+
+    if (font_options->subpixel_order !=
+	surface->cr.current_font_options.subpixel_order)
+    {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /subpixel-order //%s",
+				     _subpixel_order_to_string (font_options->subpixel_order));
+    }
+
+    if (font_options->hint_style !=
+	surface->cr.current_font_options.hint_style)
+    {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /hint-style //%s",
+				     _hint_style_to_string (font_options->hint_style));
+    }
+
+    if (font_options->hint_metrics !=
+	surface->cr.current_font_options.hint_metrics)
+    {
+	_cairo_output_stream_printf (ctx->stream,
+				     " /hint-metrics //%s",
+				     _hint_metrics_to_string (font_options->hint_metrics));
+    }
+
+    _cairo_output_stream_printf (ctx->stream,
+				 " >> set-font-options\n");
+
+    surface->cr.current_font_options = *font_options;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_script_scaled_font_fini (cairo_scaled_font_private_t *abstract_private,
+				cairo_scaled_font_t *scaled_font)
+{
+    cairo_script_font_t *priv = (cairo_script_font_t *)abstract_private;
+    cairo_script_context_t *ctx = (cairo_script_context_t *)abstract_private->key;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&ctx->base);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	_cairo_output_stream_printf (ctx->stream,
+				     "/f%lu undef /sf%lu undef\n",
+				     priv->id,
+				     priv->id);
+
+	_bitmap_release_id (&ctx->font_id, priv->id);
+	cairo_device_release (&ctx->base);
+    }
+
+    cairo_list_del (&priv->link);
+    cairo_list_del (&priv->base.link);
+    free (priv);
+}
+
+static cairo_script_font_t *
+_cairo_script_font_get (cairo_script_context_t *ctx, cairo_scaled_font_t *font)
+{
+    return (cairo_script_font_t *) _cairo_scaled_font_find_private (font, ctx);
+}
+
+static long unsigned
+_cairo_script_font_id (cairo_script_context_t *ctx, cairo_scaled_font_t *font)
+{
+    return _cairo_script_font_get (ctx, font)->id;
+}
+
+static cairo_status_t
+_emit_type42_font (cairo_script_surface_t *surface,
+		   cairo_scaled_font_t *scaled_font)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    const cairo_scaled_font_backend_t *backend;
+    cairo_output_stream_t *base85_stream;
+    cairo_output_stream_t *zlib_stream;
+    cairo_status_t status, status2;
+    unsigned long size;
+    unsigned int load_flags;
+    uint32_t len;
+    uint8_t *buf;
+
+    backend = scaled_font->backend;
+    if (backend->load_truetype_table == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = 0;
+    status = backend->load_truetype_table (scaled_font, 0, 0, NULL, &size);
+    if (unlikely (status))
+	return status;
+
+    buf = _cairo_malloc (size);
+    if (unlikely (buf == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = backend->load_truetype_table (scaled_font, 0, 0, buf, &size);
+    if (unlikely (status)) {
+	free (buf);
+	return status;
+    }
+
+#if CAIRO_HAS_FT_FONT
+    load_flags = _cairo_ft_scaled_font_get_load_flags (scaled_font);
+#else
+    load_flags = 0;
+#endif
+    _cairo_output_stream_printf (ctx->stream,
+				 "<< "
+				 "/type 42 "
+				 "/index 0 "
+				 "/flags %d "
+				 "/source <|",
+				 load_flags);
+
+    base85_stream = _cairo_base85_stream_create (ctx->stream);
+    len = to_be32 (size);
+    _cairo_output_stream_write (base85_stream, &len, sizeof (len));
+
+    zlib_stream = _cairo_deflate_stream_create (base85_stream);
+
+    _cairo_output_stream_write (zlib_stream, buf, size);
+    free (buf);
+
+    status2 = _cairo_output_stream_destroy (zlib_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    status2 = _cairo_output_stream_destroy (base85_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "~> >> font dup /f%lu exch def set-font-face",
+				 _cairo_script_font_id (ctx, scaled_font));
+
+    return status;
+}
+
+static cairo_status_t
+_emit_scaled_font_init (cairo_script_surface_t *surface,
+			cairo_scaled_font_t *scaled_font,
+			cairo_script_font_t **font_out)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_script_font_t *font_private;
+    cairo_int_status_t status;
+
+    font_private = _cairo_malloc (sizeof (cairo_script_font_t));
+    if (unlikely (font_private == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_scaled_font_attach_private (scaled_font, &font_private->base, ctx,
+				       _cairo_script_scaled_font_fini);
+
+    font_private->parent = scaled_font;
+    font_private->subset_glyph_index = 0;
+    font_private->has_sfnt = TRUE;
+
+    cairo_list_add (&font_private->link, &ctx->fonts);
+
+    status = _bitmap_next_id (&ctx->font_id,
+			      &font_private->id);
+    if (unlikely (status)) {
+	free (font_private);
+	return status;
+    }
+
+    status = _emit_context (surface);
+    if (unlikely (status)) {
+	free (font_private);
+	return status;
+    }
+
+    status = _emit_type42_font (surface, scaled_font);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	*font_out = font_private;
+	return status;
+    }
+
+    font_private->has_sfnt = FALSE;
+    _cairo_output_stream_printf (ctx->stream,
+				 "dict\n"
+				 "  /type 3 set\n"
+				 "  /metrics [%f %f %f %f %f] set\n"
+				 "  /glyphs array set\n"
+				 "  font dup /f%lu exch def set-font-face",
+				 scaled_font->fs_extents.ascent,
+				 scaled_font->fs_extents.descent,
+				 scaled_font->fs_extents.height,
+				 scaled_font->fs_extents.max_x_advance,
+				 scaled_font->fs_extents.max_y_advance,
+				 font_private->id);
+
+    *font_out = font_private;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_scaled_font (cairo_script_surface_t *surface,
+		   cairo_scaled_font_t *scaled_font)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_matrix_t matrix;
+    cairo_font_options_t options;
+    cairo_bool_t matrix_updated = FALSE;
+    cairo_status_t status;
+    cairo_script_font_t *font_private;
+
+    cairo_scaled_font_get_ctm (scaled_font, &matrix);
+    status = _emit_scaling_matrix (surface, &matrix, &matrix_updated);
+    if (unlikely (status))
+	return status;
+
+    if (! matrix_updated && surface->cr.current_scaled_font == scaled_font)
+	return CAIRO_STATUS_SUCCESS;
+
+    surface->cr.current_scaled_font = scaled_font;
+
+    font_private = _cairo_script_font_get (ctx, scaled_font);
+    if (font_private == NULL) {
+	cairo_scaled_font_get_font_matrix (scaled_font, &matrix);
+	status = _emit_font_matrix (surface, &matrix);
+	if (unlikely (status))
+	    return status;
+
+	cairo_scaled_font_get_font_options (scaled_font, &options);
+	status = _emit_font_options (surface, &options);
+	if (unlikely (status))
+	    return status;
+
+	status = _emit_scaled_font_init (surface, scaled_font, &font_private);
+	if (unlikely (status))
+	    return status;
+
+	assert (target_is_active (surface));
+	_cairo_output_stream_printf (ctx->stream,
+				     " /scaled-font get /sf%lu exch def\n",
+				     font_private->id);
+    } else {
+	_cairo_output_stream_printf (ctx->stream,
+				     "sf%lu set-scaled-font\n",
+				     font_private->id);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_scaled_glyph_vector (cairo_script_surface_t *surface,
+			   cairo_scaled_font_t *scaled_font,
+			   cairo_script_font_t *font_private,
+			   cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_script_implicit_context_t old_cr;
+    cairo_status_t status;
+    unsigned long index;
+
+    index = ++font_private->subset_glyph_index;
+    scaled_glyph->dev_private_key = ctx;
+    scaled_glyph->dev_private = (void *) index;
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "%lu <<\n"
+				 "  /metrics [%f %f %f %f %f %f]\n"
+				 "  /render {\n",
+				 index,
+				 scaled_glyph->fs_metrics.x_bearing,
+				 scaled_glyph->fs_metrics.y_bearing,
+				 scaled_glyph->fs_metrics.width,
+				 scaled_glyph->fs_metrics.height,
+				 scaled_glyph->fs_metrics.x_advance,
+				 scaled_glyph->fs_metrics.y_advance);
+
+    if (! _cairo_matrix_is_identity (&scaled_font->scale_inverse)) {
+	_cairo_output_stream_printf (ctx->stream,
+				     "[%f %f %f %f %f %f] transform\n",
+				     scaled_font->scale_inverse.xx,
+				     scaled_font->scale_inverse.yx,
+				     scaled_font->scale_inverse.xy,
+				     scaled_font->scale_inverse.yy,
+				     scaled_font->scale_inverse.x0,
+				     scaled_font->scale_inverse.y0);
+    }
+
+    old_cr = surface->cr;
+    _cairo_script_implicit_context_init (&surface->cr);
+    status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
+					      &surface->base);
+    surface->cr = old_cr;
+
+    _cairo_output_stream_puts (ctx->stream, "} >> set\n");
+
+    return status;
+}
+
+static cairo_status_t
+_emit_scaled_glyph_bitmap (cairo_script_surface_t *surface,
+			   cairo_scaled_font_t *scaled_font,
+			   cairo_script_font_t *font_private,
+			   cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_status_t status;
+    unsigned long index;
+
+    index = ++font_private->subset_glyph_index;
+    scaled_glyph->dev_private_key = ctx;
+    scaled_glyph->dev_private = (void *) index;
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "%lu <<\n"
+				 "  /metrics [%f %f %f %f %f %f]\n"
+				 "  /render {\n"
+				 "%f %f translate\n",
+				 index,
+				 scaled_glyph->fs_metrics.x_bearing,
+				 scaled_glyph->fs_metrics.y_bearing,
+				 scaled_glyph->fs_metrics.width,
+				 scaled_glyph->fs_metrics.height,
+				 scaled_glyph->fs_metrics.x_advance,
+				 scaled_glyph->fs_metrics.y_advance,
+				 scaled_glyph->fs_metrics.x_bearing,
+				 scaled_glyph->fs_metrics.y_bearing);
+
+    status = _emit_image_surface (surface, scaled_glyph->surface);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_puts (ctx->stream, "pattern ");
+
+    if (! _cairo_matrix_is_identity (&scaled_font->font_matrix)) {
+	_cairo_output_stream_printf (ctx->stream,
+				     "\n  [%f %f %f %f %f %f] set-matrix\n",
+				     scaled_font->font_matrix.xx,
+				     scaled_font->font_matrix.yx,
+				     scaled_font->font_matrix.xy,
+				     scaled_font->font_matrix.yy,
+				     scaled_font->font_matrix.x0,
+				     scaled_font->font_matrix.y0);
+    }
+    _cairo_output_stream_puts (ctx->stream,
+				 "mask\n} >> set\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_scaled_glyph_prologue (cairo_script_surface_t *surface,
+			     cairo_scaled_font_t *scaled_font)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+
+    _cairo_output_stream_printf (ctx->stream, "f%lu /glyphs get\n",
+				 _cairo_script_font_id (ctx, scaled_font));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_emit_scaled_glyphs (cairo_script_surface_t *surface,
+		     cairo_scaled_font_t *scaled_font,
+		     cairo_glyph_t *glyphs,
+		     unsigned int num_glyphs)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_script_font_t *font_private;
+    cairo_status_t status;
+    unsigned int n;
+    cairo_bool_t have_glyph_prologue = FALSE;
+
+    if (num_glyphs == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    font_private = _cairo_script_font_get (ctx, scaled_font);
+    if (font_private->has_sfnt)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    for (n = 0; n < num_glyphs; n++) {
+	cairo_scaled_glyph_t *scaled_glyph;
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[n].index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+	if (unlikely (status))
+	    break;
+
+	if (scaled_glyph->dev_private_key == ctx)
+	    continue;
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[n].index,
+					     CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
+					     &scaled_glyph);
+	if (_cairo_status_is_error (status))
+	    break;
+
+	if (status == CAIRO_STATUS_SUCCESS) {
+	    if (! have_glyph_prologue) {
+		status = _emit_scaled_glyph_prologue (surface, scaled_font);
+		if (unlikely (status))
+		    break;
+
+		have_glyph_prologue = TRUE;
+	    }
+
+	    status = _emit_scaled_glyph_vector (surface,
+						scaled_font, font_private,
+						scaled_glyph);
+	    if (unlikely (status))
+		break;
+
+	    continue;
+	}
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[n].index,
+					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					     &scaled_glyph);
+	if (_cairo_status_is_error (status))
+	    break;
+
+	if (status == CAIRO_STATUS_SUCCESS) {
+	    if (! have_glyph_prologue) {
+		status = _emit_scaled_glyph_prologue (surface, scaled_font);
+		if (unlikely (status))
+		    break;
+
+		have_glyph_prologue = TRUE;
+	    }
+
+	    status = _emit_scaled_glyph_bitmap (surface,
+						scaled_font,
+						font_private,
+						scaled_glyph);
+	    if (unlikely (status))
+		break;
+
+	    continue;
+	}
+    }
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    if (have_glyph_prologue) {
+	_cairo_output_stream_puts (to_context (surface)->stream, "pop pop\n");
+    }
+
+    return status;
+}
+
+static void
+to_octal (int value, char *buf, size_t size)
+{
+    do {
+	buf[--size] = '0' + (value & 7);
+	value >>= 3;
+    } while (size);
+}
+
+static void
+_emit_string_literal (cairo_script_surface_t *surface,
+		      const char *utf8, int len)
+{
+    cairo_script_context_t *ctx = to_context (surface);
+    char c;
+    const char *end;
+
+    _cairo_output_stream_puts (ctx->stream, "(");
+
+    if (utf8 == NULL) {
+	end = utf8;
+    } else {
+	if (len < 0)
+	    len = strlen (utf8);
+	end = utf8 + len;
+    }
+
+    while (utf8 < end) {
+	switch ((c = *utf8++)) {
+	case '\n':
+	    c = 'n';
+	    goto ESCAPED_CHAR;
+	case '\r':
+	    c = 'r';
+	    goto ESCAPED_CHAR;
+	case '\t':
+	    c = 't';
+	    goto ESCAPED_CHAR;
+	case '\b':
+	    c = 'b';
+	    goto ESCAPED_CHAR;
+	case '\f':
+	    c = 'f';
+	    goto ESCAPED_CHAR;
+	case '\\':
+	case '(':
+	case ')':
+ESCAPED_CHAR:
+	    _cairo_output_stream_printf (ctx->stream, "\\%c", c);
+	    break;
+	default:
+	    if (isprint (c) || isspace (c)) {
+		_cairo_output_stream_printf (ctx->stream, "%c", c);
+	    } else {
+		char buf[4] = { '\\' };
+
+		to_octal (c, buf+1, 3);
+		_cairo_output_stream_write (ctx->stream, buf, 4);
+	    }
+	    break;
+	}
+    }
+    _cairo_output_stream_puts (ctx->stream, ")");
+}
+
+static cairo_int_status_t
+_cairo_script_surface_show_text_glyphs (void			    *abstract_surface,
+					cairo_operator_t	     op,
+					const cairo_pattern_t	    *source,
+					const char		    *utf8,
+					int			     utf8_len,
+					cairo_glyph_t		    *glyphs,
+					int			     num_glyphs,
+					const cairo_text_cluster_t  *clusters,
+					int			     num_clusters,
+					cairo_text_cluster_flags_t   backward,
+					cairo_scaled_font_t	    *scaled_font,
+					const cairo_clip_t	    *clip)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+    cairo_script_context_t *ctx = to_context (surface);
+    cairo_script_font_t *font_private;
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_matrix_t matrix;
+    cairo_status_t status;
+    double x, y, ix, iy;
+    int n;
+    cairo_output_stream_t *base85_stream = NULL;
+
+    status = active (surface);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_context (surface);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_source (surface, op, source);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_scaled_font (surface, scaled_font);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_operator (surface, op);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _emit_scaled_glyphs (surface, scaled_font, glyphs, num_glyphs);
+    if (unlikely (status))
+	goto BAIL;
+
+    /* (utf8) [cx cy [glyphs]] [clusters] backward show_text_glyphs */
+    /* [cx cy [glyphs]] show_glyphs */
+
+    if (utf8 != NULL && clusters != NULL) {
+	_emit_string_literal (surface, utf8, utf8_len);
+	_cairo_output_stream_puts (ctx->stream, " ");
+    }
+
+    matrix = surface->cr.current_ctm;
+    status = cairo_matrix_invert (&matrix);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    ix = x = glyphs[0].x;
+    iy = y = glyphs[0].y;
+    cairo_matrix_transform_point (&matrix, &ix, &iy);
+    ix -= scaled_font->font_matrix.x0;
+    iy -= scaled_font->font_matrix.y0;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    font_private = _cairo_script_font_get (ctx, scaled_font);
+
+    _cairo_output_stream_printf (ctx->stream,
+				 "[%f %f ",
+				 ix, iy);
+
+    for (n = 0; n < num_glyphs; n++) {
+	if (font_private->has_sfnt) {
+	    if (glyphs[n].index > 256)
+		break;
+	} else {
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 glyphs[n].index,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &scaled_glyph);
+	    if (unlikely (status)) {
+		_cairo_scaled_font_thaw_cache (scaled_font);
+		goto BAIL;
+	    }
+
+	    if ((long unsigned) scaled_glyph->dev_private > 256)
+		break;
+	}
+    }
+
+    if (n == num_glyphs) {
+	_cairo_output_stream_puts (ctx->stream, "<~");
+	base85_stream = _cairo_base85_stream_create (ctx->stream);
+    } else
+	_cairo_output_stream_puts (ctx->stream, "[");
+
+    for (n = 0; n < num_glyphs; n++) {
+	double dx, dy;
+
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[n].index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+	if (unlikely (status)) {
+	    _cairo_scaled_font_thaw_cache (scaled_font);
+	    goto BAIL;
+	}
+
+	if (fabs (glyphs[n].x - x) > 1e-5 || fabs (glyphs[n].y - y) > 1e-5) {
+	    if (fabs (glyphs[n].y - y) < 1e-5) {
+		if (base85_stream != NULL) {
+		    status = _cairo_output_stream_destroy (base85_stream);
+		    if (unlikely (status)) {
+			base85_stream = NULL;
+			break;
+		    }
+
+		    _cairo_output_stream_printf (ctx->stream,
+						 "~> %f <~", glyphs[n].x - x);
+		    base85_stream = _cairo_base85_stream_create (ctx->stream);
+		} else {
+		    _cairo_output_stream_printf (ctx->stream,
+						 " ] %f [ ", glyphs[n].x - x);
+		}
+
+		x = glyphs[n].x;
+	    } else {
+		ix = x = glyphs[n].x;
+		iy = y = glyphs[n].y;
+		cairo_matrix_transform_point (&matrix, &ix, &iy);
+		ix -= scaled_font->font_matrix.x0;
+		iy -= scaled_font->font_matrix.y0;
+		if (base85_stream != NULL) {
+		    status = _cairo_output_stream_destroy (base85_stream);
+		    if (unlikely (status)) {
+			base85_stream = NULL;
+			break;
+		    }
+
+		    _cairo_output_stream_printf (ctx->stream,
+						 "~> %f %f <~",
+						 ix, iy);
+		    base85_stream = _cairo_base85_stream_create (ctx->stream);
+		} else {
+		    _cairo_output_stream_printf (ctx->stream,
+						 " ] %f %f [ ",
+						 ix, iy);
+		}
+	    }
+	}
+	if (base85_stream != NULL) {
+	    uint8_t c;
+
+	    if (font_private->has_sfnt)
+		c = glyphs[n].index;
+	    else
+		c = (uint8_t) (long unsigned) scaled_glyph->dev_private;
+
+	    _cairo_output_stream_write (base85_stream, &c, 1);
+	} else {
+	    if (font_private->has_sfnt)
+		_cairo_output_stream_printf (ctx->stream, " %lu",
+					     glyphs[n].index);
+	    else
+		_cairo_output_stream_printf (ctx->stream, " %lu",
+					     (long unsigned) scaled_glyph->dev_private);
+	}
+
+        dx = scaled_glyph->metrics.x_advance;
+        dy = scaled_glyph->metrics.y_advance;
+	cairo_matrix_transform_distance (&scaled_font->ctm, &dx, &dy);
+	x += dx;
+	y += dy;
+    }
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    if (base85_stream != NULL) {
+	cairo_status_t status2;
+
+	status2 = _cairo_output_stream_destroy (base85_stream);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = status2;
+
+	_cairo_output_stream_printf (ctx->stream, "~>");
+    } else {
+	_cairo_output_stream_puts (ctx->stream, " ]");
+    }
+    if (unlikely (status))
+	return status;
+
+    if (utf8 != NULL && clusters != NULL) {
+	for (n = 0; n < num_clusters; n++) {
+	    if (clusters[n].num_bytes > UCHAR_MAX ||
+		clusters[n].num_glyphs > UCHAR_MAX)
+	    {
+		break;
+	    }
+	}
+
+	if (n < num_clusters) {
+	    _cairo_output_stream_puts (ctx->stream, "] [ ");
+	    for (n = 0; n < num_clusters; n++) {
+		_cairo_output_stream_printf (ctx->stream,
+					     "%d %d ",
+					     clusters[n].num_bytes,
+					     clusters[n].num_glyphs);
+	    }
+	    _cairo_output_stream_puts (ctx->stream, "]");
+	}
+	else
+	{
+	    _cairo_output_stream_puts (ctx->stream, "] <~");
+	    base85_stream = _cairo_base85_stream_create (ctx->stream);
+	    for (n = 0; n < num_clusters; n++) {
+		uint8_t c[2];
+		c[0] = clusters[n].num_bytes;
+		c[1] = clusters[n].num_glyphs;
+		_cairo_output_stream_write (base85_stream, c, 2);
+	    }
+	    status = _cairo_output_stream_destroy (base85_stream);
+	    if (unlikely (status))
+		goto BAIL;
+
+	    _cairo_output_stream_puts (ctx->stream, "~>");
+	}
+
+	_cairo_output_stream_printf (ctx->stream,
+				     " //%s show-text-glyphs\n",
+				     _direction_to_string (backward));
+    } else {
+	_cairo_output_stream_puts (ctx->stream,
+				   "] show-glyphs\n");
+    }
+
+    inactive (surface);
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)){
+	return _cairo_surface_wrapper_show_text_glyphs (&surface->wrapper,
+							op, source,
+							utf8, utf8_len,
+							glyphs, num_glyphs,
+							clusters, num_clusters,
+							backward,
+							scaled_font,
+							clip);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+
+BAIL:
+    inactive (surface);
+    return status;
+}
+
+static cairo_bool_t
+_cairo_script_surface_get_extents (void *abstract_surface,
+				   cairo_rectangle_int_t *rectangle)
+{
+    cairo_script_surface_t *surface = abstract_surface;
+
+    if (_cairo_surface_wrapper_is_active (&surface->wrapper)) {
+	return _cairo_surface_wrapper_get_extents (&surface->wrapper,
+						   rectangle);
+    }
+
+    if (surface->width < 0 || surface->height < 0)
+	return FALSE;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+    rectangle->width = surface->width;
+    rectangle->height = surface->height;
+
+    return TRUE;
+}
+
+static const cairo_surface_backend_t
+_cairo_script_surface_backend = {
+    CAIRO_SURFACE_TYPE_SCRIPT,
+    _cairo_script_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_script_surface_create_similar,
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_script_surface_source,
+    _cairo_script_surface_acquire_source_image,
+    _cairo_script_surface_release_source_image,
+    _cairo_script_surface_snapshot,
+
+    _cairo_script_surface_copy_page,
+    _cairo_script_surface_show_page,
+
+    _cairo_script_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_script_surface_paint,
+    _cairo_script_surface_mask,
+    _cairo_script_surface_stroke,
+    _cairo_script_surface_fill,
+    NULL, /* fill/stroke */
+    NULL, /* glyphs */
+    _cairo_script_surface_has_show_text_glyphs,
+    _cairo_script_surface_show_text_glyphs
+};
+
+static void
+_cairo_script_implicit_context_init (cairo_script_implicit_context_t *cr)
+{
+    cr->current_operator = CAIRO_GSTATE_OPERATOR_DEFAULT;
+    cr->current_fill_rule = CAIRO_GSTATE_FILL_RULE_DEFAULT;
+    cr->current_tolerance = CAIRO_GSTATE_TOLERANCE_DEFAULT;
+    cr->current_antialias = CAIRO_ANTIALIAS_DEFAULT;
+    _cairo_stroke_style_init (&cr->current_style);
+    _cairo_pattern_init_solid (&cr->current_source.solid,
+			       CAIRO_COLOR_BLACK);
+    _cairo_path_fixed_init (&cr->current_path);
+    cairo_matrix_init_identity (&cr->current_ctm);
+    cairo_matrix_init_identity (&cr->current_stroke_matrix);
+    cairo_matrix_init_identity (&cr->current_font_matrix);
+    _cairo_font_options_init_default (&cr->current_font_options);
+    cr->current_scaled_font = NULL;
+    cr->has_clip = FALSE;
+}
+
+static void
+_cairo_script_implicit_context_reset (cairo_script_implicit_context_t *cr)
+{
+    free (cr->current_style.dash);
+    cr->current_style.dash = NULL;
+
+    _cairo_pattern_fini (&cr->current_source.base);
+    _cairo_path_fixed_fini (&cr->current_path);
+
+    _cairo_script_implicit_context_init (cr);
+}
+
+static cairo_script_surface_t *
+_cairo_script_surface_create_internal (cairo_script_context_t *ctx,
+				       cairo_content_t content,
+				       cairo_rectangle_t *extents,
+				       cairo_surface_t *passthrough)
+{
+    cairo_script_surface_t *surface;
+
+    if (unlikely (ctx == NULL))
+	return (cairo_script_surface_t *) _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NULL_POINTER));
+
+    surface = _cairo_malloc (sizeof (cairo_script_surface_t));
+    if (unlikely (surface == NULL))
+	return (cairo_script_surface_t *) _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_script_surface_backend,
+			 &ctx->base,
+			 content,
+			 TRUE); /* is_vector */
+
+    _cairo_surface_wrapper_init (&surface->wrapper, passthrough);
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_script_surface_clipper_intersect_clip_path);
+
+    surface->width = surface->height = -1;
+    if (extents) {
+	surface->width = extents->width;
+	surface->height = extents->height;
+	cairo_surface_set_device_offset (&surface->base,
+					 -extents->x, -extents->y);
+    }
+
+    surface->emitted = FALSE;
+    surface->defined = FALSE;
+    surface->active = FALSE;
+    surface->operand.type = SURFACE;
+    cairo_list_init (&surface->operand.link);
+
+    _cairo_script_implicit_context_init (&surface->cr);
+
+    return surface;
+}
+
+static const cairo_device_backend_t _cairo_script_device_backend = {
+    CAIRO_DEVICE_TYPE_SCRIPT,
+
+    NULL, NULL, /* lock, unlock */
+
+    _device_flush,  /* flush */
+    NULL,  /* finish */
+    _device_destroy
+};
+
+cairo_device_t *
+_cairo_script_context_create_internal (cairo_output_stream_t *stream)
+{
+    cairo_script_context_t *ctx;
+
+    ctx = _cairo_malloc (sizeof (cairo_script_context_t));
+    if (unlikely (ctx == NULL))
+	return _cairo_device_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    memset (ctx, 0, sizeof (cairo_script_context_t));
+
+    _cairo_device_init (&ctx->base, &_cairo_script_device_backend);
+
+    cairo_list_init (&ctx->operands);
+    cairo_list_init (&ctx->deferred);
+    ctx->stream = stream;
+    ctx->mode = CAIRO_SCRIPT_MODE_ASCII;
+
+    cairo_list_init (&ctx->fonts);
+    cairo_list_init (&ctx->defines);
+
+    ctx->attach_snapshots = TRUE;
+
+    return &ctx->base;
+}
+
+void
+_cairo_script_context_attach_snapshots (cairo_device_t *device,
+					cairo_bool_t enable)
+{
+    cairo_script_context_t *ctx;
+
+    ctx = (cairo_script_context_t *) device;
+    ctx->attach_snapshots = enable;
+}
+
+static cairo_device_t *
+_cairo_script_context_create (cairo_output_stream_t *stream)
+{
+    cairo_script_context_t *ctx;
+
+    ctx = (cairo_script_context_t *)
+	_cairo_script_context_create_internal (stream);
+    if (unlikely (ctx->base.status))
+	return &ctx->base;
+
+    ctx->owns_stream = TRUE;
+    _cairo_output_stream_puts (ctx->stream, "%!CairoScript\n");
+    return &ctx->base;
+}
+
+/**
+ * cairo_script_create:
+ * @filename: the name (path) of the file to write the script to
+ *
+ * Creates a output device for emitting the script, used when
+ * creating the individual surfaces.
+ *
+ * Return value: a pointer to the newly created device. The caller
+ * owns the surface and should call cairo_device_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" device if an error such as out of memory
+ * occurs. You can use cairo_device_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_device_t *
+cairo_script_create (const char *filename)
+{
+    cairo_output_stream_t *stream;
+    cairo_status_t status;
+
+    stream = _cairo_output_stream_create_for_filename (filename);
+    if ((status = _cairo_output_stream_get_status (stream)))
+	return _cairo_device_create_in_error (status);
+
+    return _cairo_script_context_create (stream);
+}
+
+/**
+ * cairo_script_create_for_stream:
+ * @write_func: callback function passed the bytes written to the script
+ * @closure: user data to be passed to the callback
+ *
+ * Creates a output device for emitting the script, used when
+ * creating the individual surfaces.
+ *
+ * Return value: a pointer to the newly created device. The caller
+ * owns the surface and should call cairo_device_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" device if an error such as out of memory
+ * occurs. You can use cairo_device_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_device_t *
+cairo_script_create_for_stream (cairo_write_func_t	 write_func,
+				void			*closure)
+{
+    cairo_output_stream_t *stream;
+    cairo_status_t status;
+
+    stream = _cairo_output_stream_create (write_func, NULL, closure);
+    if ((status = _cairo_output_stream_get_status (stream)))
+	return _cairo_device_create_in_error (status);
+
+    return _cairo_script_context_create (stream);
+}
+
+/**
+ * cairo_script_write_comment:
+ * @script: the script (output device)
+ * @comment: the string to emit
+ * @len:the length of the sting to write, or -1 to use strlen()
+ *
+ * Emit a string verbatim into the script.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_script_write_comment (cairo_device_t *script,
+			    const char *comment,
+			    int len)
+{
+    cairo_script_context_t *context = (cairo_script_context_t *) script;
+
+    if (len < 0)
+	len = strlen (comment);
+
+    _cairo_output_stream_puts (context->stream, "% ");
+    _cairo_output_stream_write (context->stream, comment, len);
+    _cairo_output_stream_puts (context->stream, "\n");
+}
+
+/**
+ * cairo_script_set_mode:
+ * @script: The script (output device)
+ * @mode: the new mode
+ *
+ * Change the output mode of the script
+ *
+ * Since: 1.12
+ **/
+void
+cairo_script_set_mode (cairo_device_t *script,
+		       cairo_script_mode_t mode)
+{
+    cairo_script_context_t *context = (cairo_script_context_t *) script;
+
+    context->mode = mode;
+}
+
+/**
+ * cairo_script_get_mode:
+ * @script: The script (output device) to query
+ *
+ * Queries the script for its current output mode.
+ *
+ * Return value: the current output mode of the script
+ *
+ * Since: 1.12
+ **/
+cairo_script_mode_t
+cairo_script_get_mode (cairo_device_t *script)
+{
+    cairo_script_context_t *context = (cairo_script_context_t *) script;
+
+    return context->mode;
+}
+
+/**
+ * cairo_script_surface_create:
+ * @script: the script (output device)
+ * @content: the content of the surface
+ * @width: width in pixels
+ * @height: height in pixels
+ *
+ * Create a new surface that will emit its rendering through @script
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_script_surface_create (cairo_device_t *script,
+			     cairo_content_t content,
+			     double width,
+			     double height)
+{
+    cairo_rectangle_t *extents, r;
+
+    if (unlikely (script->backend->type != CAIRO_DEVICE_TYPE_SCRIPT))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+
+    if (unlikely (script->status))
+	return _cairo_surface_create_in_error (script->status);
+
+    extents = NULL;
+    if (width > 0 && height > 0) {
+	r.x = r.y = 0;
+	r.width  = width;
+	r.height = height;
+	extents = &r;
+    }
+    return &_cairo_script_surface_create_internal ((cairo_script_context_t *) script,
+						   content, extents,
+						   NULL)->base;
+}
+slim_hidden_def (cairo_script_surface_create);
+
+/**
+ * cairo_script_surface_create_for_target:
+ * @script: the script (output device)
+ * @target: a target surface to wrap
+ *
+ * Create a pxoy surface that will render to @target and record
+ * the operations to @device.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_script_surface_create_for_target (cairo_device_t *script,
+					cairo_surface_t *target)
+{
+    cairo_rectangle_int_t extents;
+    cairo_rectangle_t rect, *r;
+
+    if (unlikely (script->backend->type != CAIRO_DEVICE_TYPE_SCRIPT))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+
+    if (unlikely (script->status))
+	return _cairo_surface_create_in_error (script->status);
+
+    if (unlikely (target->status))
+	return _cairo_surface_create_in_error (target->status);
+
+    r = NULL;
+    if (_cairo_surface_get_extents (target, &extents)) {
+	rect.x = rect.y = 0;
+	rect.width = extents.width;
+	rect.height = extents.height;
+	r= &rect;
+    }
+    return &_cairo_script_surface_create_internal ((cairo_script_context_t *) script,
+						   target->content, r,
+						   target)->base;
+}
+
+/**
+ * cairo_script_from_recording_surface:
+ * @script: the script (output device)
+ * @recording_surface: the recording surface to replay
+ *
+ * Converts the record operations in @recording_surface into a script.
+ *
+ * Return value: #CAIRO_STATUS_SUCCESS on successful completion or an error code.
+ *
+ * Since: 1.12
+ **/
+cairo_status_t
+cairo_script_from_recording_surface (cairo_device_t *script,
+				     cairo_surface_t *recording_surface)
+{
+    cairo_rectangle_t r, *extents;
+    cairo_surface_t *surface;
+    cairo_status_t status;
+
+    if (unlikely (script->backend->type != CAIRO_DEVICE_TYPE_SCRIPT))
+	return _cairo_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+
+    if (unlikely (script->status))
+	return _cairo_error (script->status);
+
+    if (unlikely (recording_surface->status))
+	return recording_surface->status;
+
+    if (unlikely (! _cairo_surface_is_recording (recording_surface)))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    extents = NULL;
+    if (_cairo_recording_surface_get_bounds (recording_surface, &r))
+	extents = &r;
+
+    surface = &_cairo_script_surface_create_internal ((cairo_script_context_t *) script,
+						      recording_surface->content,
+						      extents,
+						      NULL)->base;
+    if (unlikely (surface->status))
+	return surface->status;
+
+    status = _cairo_recording_surface_replay (recording_surface, surface);
+    cairo_surface_destroy (surface);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-script.h b/libs/cairo-1.16.0/src/cairo-script.h
new file mode 100644
index 0000000..b5a8cf3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-script.h
@@ -0,0 +1,98 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SCRIPT_H
+#define CAIRO_SCRIPT_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_SCRIPT_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+/**
+ * cairo_script_mode_t:
+ * @CAIRO_SCRIPT_MODE_ASCII: the output will be in readable text (default). (Since 1.12)
+ * @CAIRO_SCRIPT_MODE_BINARY: the output will use byte codes. (Since 1.12)
+ *
+ * A set of script output variants.
+ *
+ * Since: 1.12
+ **/
+typedef enum {
+    CAIRO_SCRIPT_MODE_ASCII,
+    CAIRO_SCRIPT_MODE_BINARY
+} cairo_script_mode_t;
+
+cairo_public cairo_device_t *
+cairo_script_create (const char *filename);
+
+cairo_public cairo_device_t *
+cairo_script_create_for_stream (cairo_write_func_t	 write_func,
+				void			*closure);
+
+cairo_public void
+cairo_script_write_comment (cairo_device_t *script,
+			    const char *comment,
+			    int len);
+
+cairo_public void
+cairo_script_set_mode (cairo_device_t *script,
+		       cairo_script_mode_t mode);
+
+cairo_public cairo_script_mode_t
+cairo_script_get_mode (cairo_device_t *script);
+
+cairo_public cairo_surface_t *
+cairo_script_surface_create (cairo_device_t *script,
+			     cairo_content_t content,
+			     double width,
+			     double height);
+
+cairo_public cairo_surface_t *
+cairo_script_surface_create_for_target (cairo_device_t *script,
+					cairo_surface_t *target);
+
+cairo_public cairo_status_t
+cairo_script_from_recording_surface (cairo_device_t	*script,
+				     cairo_surface_t	*recording_surface);
+
+CAIRO_END_DECLS
+
+#else  /*CAIRO_HAS_SCRIPT_SURFACE*/
+# error Cairo was not compiled with support for the CairoScript backend
+#endif /*CAIRO_HAS_SCRIPT_SURFACE*/
+
+#endif /*CAIRO_SCRIPT_H*/
diff --git a/libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c b/libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c
new file mode 100644
index 0000000..3117267
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-shape-mask-compositor.c
@@ -0,0 +1,340 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-private.h"
+#include "cairo-surface-offset-private.h"
+
+static cairo_int_status_t
+_cairo_shape_mask_compositor_stroke (const cairo_compositor_t *_compositor,
+				     cairo_composite_rectangles_t *extents,
+				     const cairo_path_fixed_t	*path,
+				     const cairo_stroke_style_t	*style,
+				     const cairo_matrix_t	*ctm,
+				     const cairo_matrix_t	*ctm_inverse,
+				     double		 tolerance,
+				     cairo_antialias_t	 antialias)
+{
+    cairo_surface_t *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_int_status_t status;
+    cairo_clip_t *clip;
+
+    if (! extents->is_bounded)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    mask = _cairo_surface_create_scratch (extents->surface,
+					  CAIRO_CONTENT_ALPHA,
+					  extents->bounded.width,
+					  extents->bounded.height,
+					  NULL);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    clip = extents->clip;
+    if (! _cairo_clip_is_region (clip))
+	clip = _cairo_clip_copy_region (clip);
+
+    if (! mask->is_clear) {
+	status = _cairo_surface_offset_paint (mask,
+					      extents->bounded.x,
+					      extents->bounded.y,
+					      CAIRO_OPERATOR_CLEAR,
+					      &_cairo_pattern_clear.base,
+					      clip);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    status = _cairo_surface_offset_stroke (mask,
+					   extents->bounded.x,
+					   extents->bounded.y,
+					   CAIRO_OPERATOR_ADD,
+					   &_cairo_pattern_white.base,
+					   path, style, ctm, ctm_inverse,
+					   tolerance, antialias,
+					   clip);
+    if (unlikely (status))
+	goto error;
+
+    if (clip != extents->clip) {
+	status = _cairo_clip_combine_with_surface (extents->clip, mask,
+						   extents->bounded.x,
+						   extents->bounded.y);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    _cairo_pattern_init_for_surface (&pattern, mask);
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 -extents->bounded.x,
+				 -extents->bounded.y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    pattern.base.extend = CAIRO_EXTEND_NONE;
+    if (extents->op == CAIRO_OPERATOR_SOURCE) {
+	status = _cairo_surface_mask (extents->surface,
+				      CAIRO_OPERATOR_DEST_OUT,
+				      &_cairo_pattern_white.base,
+				      &pattern.base,
+				      clip);
+	if ((status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = _cairo_surface_mask (extents->surface,
+					  CAIRO_OPERATOR_ADD,
+					  &extents->source_pattern.base,
+					  &pattern.base,
+					  clip);
+	}
+    } else {
+	status = _cairo_surface_mask (extents->surface,
+				      extents->op,
+				      &extents->source_pattern.base,
+				      &pattern.base,
+				      clip);
+    }
+    _cairo_pattern_fini (&pattern.base);
+
+error:
+    cairo_surface_destroy (mask);
+    if (clip != extents->clip)
+	_cairo_clip_destroy (clip);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_shape_mask_compositor_fill (const cairo_compositor_t *_compositor,
+				   cairo_composite_rectangles_t *extents,
+				   const cairo_path_fixed_t	*path,
+				   cairo_fill_rule_t	 fill_rule,
+				   double			 tolerance,
+				   cairo_antialias_t	 antialias)
+{
+    cairo_surface_t *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_int_status_t status;
+    cairo_clip_t *clip;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (! extents->is_bounded)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    mask = _cairo_surface_create_scratch (extents->surface,
+					  CAIRO_CONTENT_ALPHA,
+					  extents->bounded.width,
+					  extents->bounded.height,
+					  NULL);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    clip = extents->clip;
+    if (! _cairo_clip_is_region (clip))
+	clip = _cairo_clip_copy_region (clip);
+
+    if (! mask->is_clear) {
+	status = _cairo_surface_offset_paint (mask,
+					      extents->bounded.x,
+					      extents->bounded.y,
+					      CAIRO_OPERATOR_CLEAR,
+					      &_cairo_pattern_clear.base,
+					      clip);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    status = _cairo_surface_offset_fill (mask,
+					 extents->bounded.x,
+					 extents->bounded.y,
+					 CAIRO_OPERATOR_ADD,
+					 &_cairo_pattern_white.base,
+					 path, fill_rule, tolerance, antialias,
+					 clip);
+    if (unlikely (status))
+	goto error;
+
+    if (clip != extents->clip) {
+	status = _cairo_clip_combine_with_surface (extents->clip, mask,
+						   extents->bounded.x,
+						   extents->bounded.y);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    _cairo_pattern_init_for_surface (&pattern, mask);
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 -extents->bounded.x,
+				 -extents->bounded.y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    pattern.base.extend = CAIRO_EXTEND_NONE;
+    if (extents->op == CAIRO_OPERATOR_SOURCE) {
+	status = _cairo_surface_mask (extents->surface,
+				      CAIRO_OPERATOR_DEST_OUT,
+				      &_cairo_pattern_white.base,
+				      &pattern.base,
+				      clip);
+	if ((status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = _cairo_surface_mask (extents->surface,
+					  CAIRO_OPERATOR_ADD,
+					  &extents->source_pattern.base,
+					  &pattern.base,
+					  clip);
+	}
+    } else {
+	status = _cairo_surface_mask (extents->surface,
+				      extents->op,
+				      &extents->source_pattern.base,
+				      &pattern.base,
+				      clip);
+    }
+    _cairo_pattern_fini (&pattern.base);
+
+error:
+    if (clip != extents->clip)
+	_cairo_clip_destroy (clip);
+    cairo_surface_destroy (mask);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_shape_mask_compositor_glyphs (const cairo_compositor_t *_compositor,
+				     cairo_composite_rectangles_t *extents,
+				     cairo_scaled_font_t	*scaled_font,
+				     cairo_glyph_t		*glyphs,
+				     int			 num_glyphs,
+				     cairo_bool_t		 overlap)
+{
+    cairo_surface_t *mask;
+    cairo_surface_pattern_t pattern;
+    cairo_int_status_t status;
+    cairo_clip_t *clip;
+
+    if (! extents->is_bounded)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    mask = _cairo_surface_create_scratch (extents->surface,
+					  CAIRO_CONTENT_ALPHA,
+					  extents->bounded.width,
+					  extents->bounded.height,
+					  NULL);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    clip = extents->clip;
+    if (! _cairo_clip_is_region (clip))
+	clip = _cairo_clip_copy_region (clip);
+
+    if (! mask->is_clear) {
+	status = _cairo_surface_offset_paint (mask,
+					      extents->bounded.x,
+					      extents->bounded.y,
+					      CAIRO_OPERATOR_CLEAR,
+					      &_cairo_pattern_clear.base,
+					      clip);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    status = _cairo_surface_offset_glyphs (mask,
+					   extents->bounded.x,
+					   extents->bounded.y,
+					   CAIRO_OPERATOR_ADD,
+					   &_cairo_pattern_white.base,
+					   scaled_font, glyphs, num_glyphs,
+					   clip);
+    if (unlikely (status))
+	goto error;
+
+    if (clip != extents->clip) {
+	status = _cairo_clip_combine_with_surface (extents->clip, mask,
+						   extents->bounded.x,
+						   extents->bounded.y);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    _cairo_pattern_init_for_surface (&pattern, mask);
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 -extents->bounded.x,
+				 -extents->bounded.y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    pattern.base.extend = CAIRO_EXTEND_NONE;
+    if (extents->op == CAIRO_OPERATOR_SOURCE) {
+	status = _cairo_surface_mask (extents->surface,
+				      CAIRO_OPERATOR_DEST_OUT,
+				      &_cairo_pattern_white.base,
+				      &pattern.base,
+				      clip);
+	if ((status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = _cairo_surface_mask (extents->surface,
+					  CAIRO_OPERATOR_ADD,
+					  &extents->source_pattern.base,
+					  &pattern.base,
+					  clip);
+	}
+    } else {
+	status = _cairo_surface_mask (extents->surface,
+				      extents->op,
+				      &extents->source_pattern.base,
+				      &pattern.base,
+				      clip);
+    }
+    _cairo_pattern_fini (&pattern.base);
+
+error:
+    if (clip != extents->clip)
+	_cairo_clip_destroy (clip);
+    cairo_surface_destroy (mask);
+    return status;
+}
+
+void
+_cairo_shape_mask_compositor_init (cairo_compositor_t *compositor,
+				   const cairo_compositor_t  *delegate)
+{
+    compositor->delegate = delegate;
+
+    compositor->paint  = NULL;
+    compositor->mask   = NULL;
+    compositor->fill   = _cairo_shape_mask_compositor_fill;
+    compositor->stroke = _cairo_shape_mask_compositor_stroke;
+    compositor->glyphs = _cairo_shape_mask_compositor_glyphs;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-slope-private.h b/libs/cairo-1.16.0/src/cairo-slope-private.h
new file mode 100644
index 0000000..6a58c9f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-slope-private.h
@@ -0,0 +1,72 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef _CAIRO_SLOPE_PRIVATE_H
+#define _CAIRO_SLOPE_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-fixed-private.h"
+
+static inline void
+_cairo_slope_init (cairo_slope_t *slope,
+		   const cairo_point_t *a,
+		   const cairo_point_t *b)
+{
+    slope->dx = b->x - a->x;
+    slope->dy = b->y - a->y;
+}
+
+static inline cairo_bool_t
+_cairo_slope_equal (const cairo_slope_t *a, const cairo_slope_t *b)
+{
+    return _cairo_int64_eq (_cairo_int32x32_64_mul (a->dy, b->dx),
+			    _cairo_int32x32_64_mul (b->dy, a->dx));
+}
+
+static inline cairo_bool_t
+_cairo_slope_backwards (const cairo_slope_t *a, const cairo_slope_t *b)
+{
+    return _cairo_int64_negative (_cairo_int64_add (_cairo_int32x32_64_mul (a->dx, b->dx),
+						    _cairo_int32x32_64_mul (a->dy, b->dy)));
+}
+
+cairo_private int
+_cairo_slope_compare (const cairo_slope_t *a,
+	              const cairo_slope_t *b) cairo_pure;
+
+
+#endif /* _CAIRO_SLOPE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-slope.c b/libs/cairo-1.16.0/src/cairo-slope.c
new file mode 100644
index 0000000..cc5f30c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-slope.c
@@ -0,0 +1,99 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-slope-private.h"
+
+/* Compare two slopes. Slope angles begin at 0 in the direction of the
+   positive X axis and increase in the direction of the positive Y
+   axis.
+
+   This function always compares the slope vectors based on the
+   smaller angular difference between them, (that is based on an
+   angular difference that is strictly less than pi). To break ties
+   when comparing slope vectors with an angular difference of exactly
+   pi, the vector with a positive dx (or positive dy if dx's are zero)
+   is considered to be more positive than the other.
+
+   Also, all slope vectors with both dx==0 and dy==0 are considered
+   equal and more positive than any non-zero vector.
+
+   <  0 => a less positive than b
+   == 0 => a equal to b
+   >  0 => a more positive than b
+*/
+int
+_cairo_slope_compare (const cairo_slope_t *a, const cairo_slope_t *b)
+{
+    cairo_int64_t ady_bdx = _cairo_int32x32_64_mul (a->dy, b->dx);
+    cairo_int64_t bdy_adx = _cairo_int32x32_64_mul (b->dy, a->dx);
+    int cmp;
+
+    cmp = _cairo_int64_cmp (ady_bdx, bdy_adx);
+    if (cmp)
+	return cmp;
+
+    /* special-case zero vectors.  the intended logic here is:
+     * zero vectors all compare equal, and more positive than any
+     * non-zero vector.
+     */
+    if (a->dx == 0 && a->dy == 0 && b->dx == 0 && b->dy ==0)
+	return 0;
+    if (a->dx == 0 && a->dy == 0)
+	return 1;
+    if (b->dx == 0 && b->dy ==0)
+	return -1;
+
+    /* Finally, we're looking at two vectors that are either equal or
+     * that differ by exactly pi. We can identify the "differ by pi"
+     * case by looking for a change in sign in either dx or dy between
+     * a and b.
+     *
+     * And in these cases, we eliminate the ambiguity by reducing the angle
+     * of b by an infinitesimally small amount, (that is, 'a' will
+     * always be considered less than 'b').
+     */
+    if ((a->dx ^ b->dx) < 0 || (a->dy ^ b->dy) < 0) {
+	if (a->dx > 0 || (a->dx == 0 && a->dy > 0))
+	    return -1;
+	else
+	    return +1;
+    }
+
+    /* Finally, for identical slopes, we obviously return 0. */
+    return 0;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-spans-compositor-private.h b/libs/cairo-1.16.0/src/cairo-spans-compositor-private.h
new file mode 100644
index 0000000..0babebd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-spans-compositor-private.h
@@ -0,0 +1,111 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SPANS_COMPOSITOR_PRIVATE_H
+#define CAIRO_SPANS_COMPOSITOR_PRIVATE_H
+
+#include "cairo-compositor-private.h"
+#include "cairo-types-private.h"
+#include "cairo-spans-private.h"
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_abstract_span_renderer {
+    cairo_span_renderer_t base;
+    char data[4096];
+} cairo_abstract_span_renderer_t;
+
+struct cairo_spans_compositor {
+    cairo_compositor_t base;
+
+    unsigned int flags;
+#define CAIRO_SPANS_COMPOSITOR_HAS_LERP 0x1
+
+    /* pixel-aligned fast paths */
+    cairo_int_status_t (*fill_boxes)	(void			*surface,
+					 cairo_operator_t	 op,
+					 const cairo_color_t	*color,
+					 cairo_boxes_t		*boxes);
+
+    cairo_int_status_t (*draw_image_boxes) (void *surface,
+					    cairo_image_surface_t *image,
+					    cairo_boxes_t *boxes,
+					    int dx, int dy);
+
+    cairo_int_status_t (*copy_boxes) (void *surface,
+				      cairo_surface_t *src,
+				      cairo_boxes_t *boxes,
+				      const cairo_rectangle_int_t *extents,
+				      int dx, int dy);
+
+    cairo_surface_t * (*pattern_to_surface) (cairo_surface_t *dst,
+					     const cairo_pattern_t *pattern,
+					     cairo_bool_t is_mask,
+					     const cairo_rectangle_int_t *extents,
+					     const cairo_rectangle_int_t *sample,
+					     int *src_x, int *src_y);
+
+    cairo_int_status_t (*composite_boxes) (void			*surface,
+					   cairo_operator_t	 op,
+					   cairo_surface_t	*source,
+					   cairo_surface_t	*mask,
+					   int			 src_x,
+					   int			 src_y,
+					   int			 mask_x,
+					   int			 mask_y,
+					   int			 dst_x,
+					   int			 dst_y,
+					   cairo_boxes_t		*boxes,
+					   const cairo_rectangle_int_t  *extents);
+
+    /* general shape masks using a span renderer */
+    cairo_int_status_t (*renderer_init) (cairo_abstract_span_renderer_t *renderer,
+					 const cairo_composite_rectangles_t *extents,
+					 cairo_antialias_t antialias,
+					 cairo_bool_t	 needs_clip);
+
+    void (*renderer_fini) (cairo_abstract_span_renderer_t *renderer,
+			   cairo_int_status_t status);
+};
+
+cairo_private void
+_cairo_spans_compositor_init (cairo_spans_compositor_t *compositor,
+			      const cairo_compositor_t  *delegate);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SPANS_COMPOSITOR_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-spans-compositor.c b/libs/cairo-1.16.0/src/cairo-spans-compositor.c
new file mode 100644
index 0000000..efbae25
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-spans-compositor.c
@@ -0,0 +1,1201 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-pattern-inline.h"
+#include "cairo-region-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-spans-compositor-private.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-surface-observer-private.h"
+
+typedef struct {
+    cairo_polygon_t	*polygon;
+    cairo_fill_rule_t	 fill_rule;
+    cairo_antialias_t	 antialias;
+} composite_spans_info_t;
+
+static cairo_int_status_t
+composite_polygon (const cairo_spans_compositor_t	*compositor,
+		   cairo_composite_rectangles_t		 *extents,
+		   cairo_polygon_t			*polygon,
+		   cairo_fill_rule_t			 fill_rule,
+		   cairo_antialias_t			 antialias);
+
+static cairo_int_status_t
+composite_boxes (const cairo_spans_compositor_t *compositor,
+		 cairo_composite_rectangles_t *extents,
+		 cairo_boxes_t		*boxes);
+
+static cairo_int_status_t
+clip_and_composite_polygon (const cairo_spans_compositor_t	*compositor,
+			    cairo_composite_rectangles_t	 *extents,
+			    cairo_polygon_t			*polygon,
+			    cairo_fill_rule_t			 fill_rule,
+			    cairo_antialias_t			 antialias);
+static cairo_surface_t *
+get_clip_surface (const cairo_spans_compositor_t *compositor,
+		  cairo_surface_t *dst,
+		  const cairo_clip_t *clip,
+		  const cairo_rectangle_int_t *extents)
+{
+    cairo_composite_rectangles_t composite;
+    cairo_surface_t *surface;
+    cairo_box_t box;
+    cairo_polygon_t polygon;
+    const cairo_clip_path_t *clip_path;
+    cairo_antialias_t antialias;
+    cairo_fill_rule_t fill_rule;
+    cairo_int_status_t status;
+
+    assert (clip->path);
+
+    surface = _cairo_surface_create_scratch (dst,
+					     CAIRO_CONTENT_ALPHA,
+					     extents->width,
+					     extents->height,
+					     CAIRO_COLOR_TRANSPARENT);
+
+    _cairo_box_from_rectangle (&box, extents);
+    _cairo_polygon_init (&polygon, &box, 1);
+
+    clip_path = clip->path;
+    status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,
+						clip_path->tolerance,
+						&polygon);
+    if (unlikely (status))
+	goto cleanup_polygon;
+
+    polygon.num_limits = 0;
+
+    antialias = clip_path->antialias;
+    fill_rule = clip_path->fill_rule;
+
+    if (clip->boxes) {
+	cairo_polygon_t intersect;
+	cairo_boxes_t tmp;
+
+	_cairo_boxes_init_for_array (&tmp, clip->boxes, clip->num_boxes);
+	status= _cairo_polygon_init_boxes (&intersect, &tmp);
+	if (unlikely (status))
+	    goto cleanup_polygon;
+
+	status = _cairo_polygon_intersect (&polygon, fill_rule,
+					   &intersect, CAIRO_FILL_RULE_WINDING);
+	_cairo_polygon_fini (&intersect);
+
+	if (unlikely (status))
+	    goto cleanup_polygon;
+
+	fill_rule = CAIRO_FILL_RULE_WINDING;
+    }
+
+    polygon.limits = NULL;
+    polygon.num_limits = 0;
+
+    clip_path = clip_path->prev;
+    while (clip_path) {
+	if (clip_path->antialias == antialias) {
+	    cairo_polygon_t next;
+
+	    _cairo_polygon_init (&next, NULL, 0);
+	    status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,
+							clip_path->tolerance,
+							&next);
+	    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+		status = _cairo_polygon_intersect (&polygon, fill_rule,
+						   &next, clip_path->fill_rule);
+	    _cairo_polygon_fini (&next);
+	    if (unlikely (status))
+		goto cleanup_polygon;
+
+	    fill_rule = CAIRO_FILL_RULE_WINDING;
+	}
+
+	clip_path = clip_path->prev;
+    }
+
+    _cairo_polygon_translate (&polygon, -extents->x, -extents->y);
+    status = _cairo_composite_rectangles_init_for_polygon (&composite, surface,
+							   CAIRO_OPERATOR_ADD,
+							   &_cairo_pattern_white.base,
+							   &polygon,
+							   NULL);
+    if (unlikely (status))
+	goto cleanup_polygon;
+
+    status = composite_polygon (compositor, &composite,
+				&polygon, fill_rule, antialias);
+    _cairo_composite_rectangles_fini (&composite);
+    _cairo_polygon_fini (&polygon);
+    if (unlikely (status))
+	goto error;
+
+    _cairo_polygon_init (&polygon, &box, 1);
+
+    clip_path = clip->path;
+    antialias = clip_path->antialias == CAIRO_ANTIALIAS_DEFAULT ? CAIRO_ANTIALIAS_NONE : CAIRO_ANTIALIAS_DEFAULT;
+    clip_path = clip_path->prev;
+    while (clip_path) {
+	if (clip_path->antialias == antialias) {
+	    if (polygon.num_edges == 0) {
+		status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,
+							    clip_path->tolerance,
+							    &polygon);
+
+		fill_rule = clip_path->fill_rule;
+		polygon.limits = NULL;
+		polygon.num_limits = 0;
+	    } else {
+		cairo_polygon_t next;
+
+		_cairo_polygon_init (&next, NULL, 0);
+		status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,
+							    clip_path->tolerance,
+							    &next);
+		if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+		    status = _cairo_polygon_intersect (&polygon, fill_rule,
+						       &next, clip_path->fill_rule);
+		_cairo_polygon_fini (&next);
+		fill_rule = CAIRO_FILL_RULE_WINDING;
+	    }
+	    if (unlikely (status))
+		goto error;
+	}
+
+	clip_path = clip_path->prev;
+    }
+
+    if (polygon.num_edges) {
+	_cairo_polygon_translate (&polygon, -extents->x, -extents->y);
+	status = _cairo_composite_rectangles_init_for_polygon (&composite, surface,
+							       CAIRO_OPERATOR_IN,
+							       &_cairo_pattern_white.base,
+							       &polygon,
+							       NULL);
+	if (unlikely (status))
+	    goto cleanup_polygon;
+
+	status = composite_polygon (compositor, &composite,
+				    &polygon, fill_rule, antialias);
+	_cairo_composite_rectangles_fini (&composite);
+	_cairo_polygon_fini (&polygon);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    return surface;
+
+cleanup_polygon:
+    _cairo_polygon_fini (&polygon);
+error:
+    cairo_surface_destroy (surface);
+    return _cairo_int_surface_create_in_error (status);
+}
+
+static cairo_int_status_t
+fixup_unbounded_mask (const cairo_spans_compositor_t *compositor,
+		      const cairo_composite_rectangles_t *extents,
+		      cairo_boxes_t *boxes)
+{
+    cairo_composite_rectangles_t composite;
+    cairo_surface_t *clip;
+    cairo_int_status_t status;
+
+    TRACE((stderr, "%s\n", __FUNCTION__));
+
+    clip = get_clip_surface (compositor, extents->surface, extents->clip,
+			     &extents->unbounded);
+    if (unlikely (clip->status)) {
+	if ((cairo_int_status_t)clip->status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+	    return CAIRO_STATUS_SUCCESS;
+
+	return clip->status;
+    }
+
+    status = _cairo_composite_rectangles_init_for_boxes (&composite,
+							 extents->surface,
+							 CAIRO_OPERATOR_CLEAR,
+							 &_cairo_pattern_clear.base,
+							 boxes,
+							 NULL);
+    if (unlikely (status))
+	goto cleanup_clip;
+
+    _cairo_pattern_init_for_surface (&composite.mask_pattern.surface, clip);
+    composite.mask_pattern.base.filter = CAIRO_FILTER_NEAREST;
+    composite.mask_pattern.base.extend = CAIRO_EXTEND_NONE;
+
+    status = composite_boxes (compositor, &composite, boxes);
+
+    _cairo_pattern_fini (&composite.mask_pattern.base);
+    _cairo_composite_rectangles_fini (&composite);
+
+cleanup_clip:
+    cairo_surface_destroy (clip);
+    return status;
+}
+
+static cairo_int_status_t
+fixup_unbounded_polygon (const cairo_spans_compositor_t *compositor,
+			 const cairo_composite_rectangles_t *extents,
+			 cairo_boxes_t *boxes)
+{
+    cairo_polygon_t polygon, intersect;
+    cairo_composite_rectangles_t composite;
+    cairo_fill_rule_t fill_rule;
+    cairo_antialias_t antialias;
+    cairo_int_status_t status;
+
+    TRACE((stderr, "%s\n", __FUNCTION__));
+
+    /* Can we treat the clip as a regular clear-polygon and use it to fill? */
+    status = _cairo_clip_get_polygon (extents->clip, &polygon,
+				      &fill_rule, &antialias);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status= _cairo_polygon_init_boxes (&intersect, boxes);
+    if (unlikely (status))
+	goto cleanup_polygon;
+
+    status = _cairo_polygon_intersect (&polygon, fill_rule,
+				       &intersect, CAIRO_FILL_RULE_WINDING);
+    _cairo_polygon_fini (&intersect);
+
+    if (unlikely (status))
+	goto cleanup_polygon;
+
+    status = _cairo_composite_rectangles_init_for_polygon (&composite,
+							   extents->surface,
+							   CAIRO_OPERATOR_CLEAR,
+							   &_cairo_pattern_clear.base,
+							   &polygon,
+							   NULL);
+    if (unlikely (status))
+	goto cleanup_polygon;
+
+    status = composite_polygon (compositor, &composite,
+				&polygon, fill_rule, antialias);
+
+    _cairo_composite_rectangles_fini (&composite);
+cleanup_polygon:
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+static cairo_int_status_t
+fixup_unbounded_boxes (const cairo_spans_compositor_t *compositor,
+		       const cairo_composite_rectangles_t *extents,
+		       cairo_boxes_t *boxes)
+{
+    cairo_boxes_t tmp, clear;
+    cairo_box_t box;
+    cairo_int_status_t status;
+
+    assert (boxes->is_pixel_aligned);
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (extents->bounded.width  == extents->unbounded.width &&
+	extents->bounded.height == extents->unbounded.height)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* subtract the drawn boxes from the unbounded area */
+    _cairo_boxes_init (&clear);
+
+    box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+    box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
+    box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
+    box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
+
+    if (boxes->num_boxes) {
+	_cairo_boxes_init (&tmp);
+
+	status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+	tmp.chunks.next = &boxes->chunks;
+	tmp.num_boxes += boxes->num_boxes;
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+	tmp.chunks.next = NULL;
+	if (unlikely (status))
+	    goto error;
+    } else {
+	box.p1.x = _cairo_fixed_from_int (extents->unbounded.x);
+	box.p2.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+
+	status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    /* If we have a clip polygon, we need to intersect with that as well */
+    if (extents->clip->path) {
+	status = fixup_unbounded_polygon (compositor, extents, &clear);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    status = fixup_unbounded_mask (compositor, extents, &clear);
+    } else {
+	/* Otherwise just intersect with the clip boxes */
+	if (extents->clip->num_boxes) {
+	    _cairo_boxes_init_for_array (&tmp,
+					 extents->clip->boxes,
+					 extents->clip->num_boxes);
+	    status = _cairo_boxes_intersect (&clear, &tmp, &clear);
+	    if (unlikely (status))
+		goto error;
+	}
+
+	if (clear.is_pixel_aligned) {
+	    status = compositor->fill_boxes (extents->surface,
+					     CAIRO_OPERATOR_CLEAR,
+					     CAIRO_COLOR_TRANSPARENT,
+					     &clear);
+	} else {
+	    cairo_composite_rectangles_t composite;
+
+	    status = _cairo_composite_rectangles_init_for_boxes (&composite,
+								 extents->surface,
+								 CAIRO_OPERATOR_CLEAR,
+								 &_cairo_pattern_clear.base,
+								 &clear,
+								 NULL);
+	    if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+		status = composite_boxes (compositor, &composite, &clear);
+		_cairo_composite_rectangles_fini (&composite);
+	    }
+	}
+    }
+
+error:
+    _cairo_boxes_fini (&clear);
+    return status;
+}
+
+static cairo_surface_t *
+unwrap_source (const cairo_pattern_t *pattern)
+{
+    cairo_rectangle_int_t limit;
+
+    return _cairo_pattern_get_source ((cairo_surface_pattern_t *)pattern,
+				      &limit);
+}
+
+static cairo_bool_t
+is_recording_pattern (const cairo_pattern_t *pattern)
+{
+    cairo_surface_t *surface;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return FALSE;
+
+    surface = ((const cairo_surface_pattern_t *) pattern)->surface;
+    return _cairo_surface_is_recording (surface);
+}
+
+static cairo_bool_t
+recording_pattern_contains_sample (const cairo_pattern_t *pattern,
+				   const cairo_rectangle_int_t *sample)
+{
+    cairo_recording_surface_t *surface;
+
+    if (! is_recording_pattern (pattern))
+	return FALSE;
+
+    if (pattern->extend == CAIRO_EXTEND_NONE)
+	return TRUE;
+
+    surface = (cairo_recording_surface_t *) unwrap_source (pattern);
+    if (surface->unbounded)
+	return TRUE;
+
+    return _cairo_rectangle_contains_rectangle (&surface->extents, sample);
+}
+
+static cairo_bool_t
+op_reduces_to_source (const cairo_composite_rectangles_t *extents,
+		      cairo_bool_t no_mask)
+{
+    if (extents->op == CAIRO_OPERATOR_SOURCE)
+	return TRUE;
+
+    if (extents->surface->is_clear)
+	return extents->op == CAIRO_OPERATOR_OVER || extents->op == CAIRO_OPERATOR_ADD;
+
+    if (no_mask && extents->op == CAIRO_OPERATOR_OVER)
+	return _cairo_pattern_is_opaque (&extents->source_pattern.base,
+					 &extents->source_sample_area);
+
+    return FALSE;
+}
+
+static cairo_status_t
+upload_boxes (const cairo_spans_compositor_t *compositor,
+	      const cairo_composite_rectangles_t *extents,
+	      cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    const cairo_surface_pattern_t *source = &extents->source_pattern.surface;
+    cairo_surface_t *src;
+    cairo_rectangle_int_t limit;
+    cairo_int_status_t status;
+    int tx, ty;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    src = _cairo_pattern_get_source(source, &limit);
+    if (!(src->type == CAIRO_SURFACE_TYPE_IMAGE || src->type == dst->type))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->base.matrix, &tx, &ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Check that the data is entirely within the image */
+    if (extents->bounded.x + tx < limit.x || extents->bounded.y + ty < limit.y)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (extents->bounded.x + extents->bounded.width  + tx > limit.x + limit.width ||
+	extents->bounded.y + extents->bounded.height + ty > limit.y + limit.height)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    tx += limit.x;
+    ty += limit.y;
+
+    if (src->type == CAIRO_SURFACE_TYPE_IMAGE)
+	status = compositor->draw_image_boxes (dst,
+					       (cairo_image_surface_t *)src,
+					       boxes, tx, ty);
+    else
+	status = compositor->copy_boxes (dst, src, boxes, &extents->bounded,
+					 tx, ty);
+
+    return status;
+}
+
+static cairo_bool_t
+_clip_is_region (const cairo_clip_t *clip)
+{
+    int i;
+
+    if (clip->is_region)
+	return TRUE;
+
+    if (clip->path)
+	return FALSE;
+
+    for (i = 0; i < clip->num_boxes; i++) {
+	const cairo_box_t *b = &clip->boxes[i];
+	if (!_cairo_fixed_is_integer (b->p1.x | b->p1.y |  b->p2.x | b->p2.y))
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+static cairo_int_status_t
+composite_aligned_boxes (const cairo_spans_compositor_t		*compositor,
+			 const cairo_composite_rectangles_t	*extents,
+			 cairo_boxes_t				*boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_operator_t op = extents->op;
+    const cairo_pattern_t *source = &extents->source_pattern.base;
+    cairo_int_status_t status;
+    cairo_bool_t need_clip_mask = ! _clip_is_region (extents->clip);
+    cairo_bool_t op_is_source;
+    cairo_bool_t no_mask;
+    cairo_bool_t inplace;
+
+    TRACE ((stderr, "%s: need_clip_mask=%d, is-bounded=%d\n",
+	    __FUNCTION__, need_clip_mask, extents->is_bounded));
+    if (need_clip_mask && ! extents->is_bounded) {
+	TRACE ((stderr, "%s: unsupported clip\n", __FUNCTION__));
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    no_mask = extents->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID &&
+	CAIRO_COLOR_IS_OPAQUE (&extents->mask_pattern.solid.color);
+    op_is_source = op_reduces_to_source (extents, no_mask);
+    inplace = ! need_clip_mask && op_is_source && no_mask;
+
+    TRACE ((stderr, "%s: op-is-source=%d [op=%d], no-mask=%d, inplace=%d\n",
+	    __FUNCTION__, op_is_source, op, no_mask, inplace));
+
+    if (op == CAIRO_OPERATOR_SOURCE && (need_clip_mask || ! no_mask)) {
+	/* SOURCE with a mask is actually a LERP in cairo semantics */
+	if ((compositor->flags & CAIRO_SPANS_COMPOSITOR_HAS_LERP) == 0) {
+	    TRACE ((stderr, "%s: unsupported lerp\n", __FUNCTION__));
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	}
+    }
+
+    /* Are we just copying a recording surface? */
+    if (inplace &&
+	recording_pattern_contains_sample (&extents->source_pattern.base,
+					   &extents->source_sample_area))
+    {
+	cairo_clip_t *recording_clip;
+	const cairo_pattern_t *source = &extents->source_pattern.base;
+	const cairo_matrix_t *m;
+	cairo_matrix_t matrix;
+
+	/* XXX could also do tiling repeat modes... */
+
+	/* first clear the area about to be overwritten */
+	if (! dst->is_clear) {
+	    status = compositor->fill_boxes (dst,
+					     CAIRO_OPERATOR_CLEAR,
+					     CAIRO_COLOR_TRANSPARENT,
+					     boxes);
+	    if (unlikely (status))
+		return status;
+
+	    dst->is_clear = TRUE;
+	}
+
+	m = &source->matrix;
+	if (_cairo_surface_has_device_transform (dst)) {
+	    cairo_matrix_multiply (&matrix,
+				   &source->matrix,
+				   &dst->device_transform);
+	    m = &matrix;
+	}
+
+	recording_clip = _cairo_clip_from_boxes (boxes);
+	status = _cairo_recording_surface_replay_with_clip (unwrap_source (source),
+							    m, dst, recording_clip);
+	_cairo_clip_destroy (recording_clip);
+
+	return status;
+    }
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (! need_clip_mask && no_mask && source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_color_t *color;
+
+	color = &((cairo_solid_pattern_t *) source)->color;
+	if (op_is_source)
+	    op = CAIRO_OPERATOR_SOURCE;
+	status = compositor->fill_boxes (dst, op, color, boxes);
+    } else if (inplace && source->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	status = upload_boxes (compositor, extents, boxes);
+    }
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_surface_t *src;
+	cairo_surface_t *mask = NULL;
+	int src_x, src_y;
+	int mask_x = 0, mask_y = 0;
+
+	/* All typical cases will have been resolved before now... */
+	if (need_clip_mask) {
+	    mask = get_clip_surface (compositor, dst, extents->clip,
+				     &extents->bounded);
+	    if (unlikely (mask->status))
+		return mask->status;
+
+	    mask_x = -extents->bounded.x;
+	    mask_y = -extents->bounded.y;
+	}
+
+	/* XXX but this is still ugly */
+	if (! no_mask) {
+	    src = compositor->pattern_to_surface (dst,
+						  &extents->mask_pattern.base,
+						  TRUE,
+						  &extents->bounded,
+						  &extents->mask_sample_area,
+						  &src_x, &src_y);
+	    if (unlikely (src->status)) {
+		cairo_surface_destroy (mask);
+		return src->status;
+	    }
+
+	    if (mask != NULL) {
+		status = compositor->composite_boxes (mask, CAIRO_OPERATOR_IN,
+						      src, NULL,
+						      src_x, src_y,
+						      0, 0,
+						      mask_x, mask_y,
+						      boxes, &extents->bounded);
+
+		cairo_surface_destroy (src);
+	    } else {
+		mask = src;
+		mask_x = src_x;
+		mask_y = src_y;
+	    }
+	}
+
+	src = compositor->pattern_to_surface (dst, source, FALSE,
+					      &extents->bounded,
+					      &extents->source_sample_area,
+					      &src_x, &src_y);
+	if (likely (src->status == CAIRO_STATUS_SUCCESS)) {
+	    status = compositor->composite_boxes (dst, op, src, mask,
+						  src_x, src_y,
+						  mask_x, mask_y,
+						  0, 0,
+						  boxes, &extents->bounded);
+	    cairo_surface_destroy (src);
+	} else
+	    status = src->status;
+
+	cairo_surface_destroy (mask);
+    }
+
+    if (status == CAIRO_INT_STATUS_SUCCESS && ! extents->is_bounded)
+	status = fixup_unbounded_boxes (compositor, extents, boxes);
+
+    return status;
+}
+
+static cairo_bool_t
+composite_needs_clip (const cairo_composite_rectangles_t *composite,
+		      const cairo_box_t *extents)
+{
+    return !_cairo_clip_contains_box (composite->clip, extents);
+}
+
+static cairo_int_status_t
+composite_boxes (const cairo_spans_compositor_t *compositor,
+		 cairo_composite_rectangles_t *extents,
+		 cairo_boxes_t		*boxes)
+{
+    cairo_abstract_span_renderer_t renderer;
+    cairo_rectangular_scan_converter_t converter;
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_int_status_t status;
+    cairo_box_t box;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    _cairo_box_from_rectangle (&box, &extents->unbounded);
+    if (composite_needs_clip (extents, &box)) {
+	TRACE ((stderr, "%s: unsupported clip\n", __FUNCTION__));
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    _cairo_rectangular_scan_converter_init (&converter, &extents->unbounded);
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	int i;
+
+	for (i = 0; i < chunk->count; i++) {
+	    status = _cairo_rectangular_scan_converter_add_box (&converter, &box[i], 1);
+	    if (unlikely (status))
+		goto cleanup_converter;
+	}
+    }
+
+    status = compositor->renderer_init (&renderer, extents,
+					CAIRO_ANTIALIAS_DEFAULT, FALSE);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = converter.base.generate (&converter.base, &renderer.base);
+    compositor->renderer_fini (&renderer, status);
+
+cleanup_converter:
+    converter.base.destroy (&converter.base);
+    return status;
+}
+
+static cairo_int_status_t
+composite_polygon (const cairo_spans_compositor_t	*compositor,
+		   cairo_composite_rectangles_t		 *extents,
+		   cairo_polygon_t			*polygon,
+		   cairo_fill_rule_t			 fill_rule,
+		   cairo_antialias_t			 antialias)
+{
+    cairo_abstract_span_renderer_t renderer;
+    cairo_scan_converter_t *converter;
+    cairo_bool_t needs_clip;
+    cairo_int_status_t status;
+
+    if (extents->is_bounded)
+	needs_clip = extents->clip->path != NULL;
+    else
+	needs_clip = !_clip_is_region (extents->clip) || extents->clip->num_boxes > 1;
+    TRACE ((stderr, "%s - needs_clip=%d\n", __FUNCTION__, needs_clip));
+    if (needs_clip) {
+	TRACE ((stderr, "%s: unsupported clip\n", __FUNCTION__));
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+	converter = _cairo_clip_tor_scan_converter_create (extents->clip,
+							   polygon,
+							   fill_rule, antialias);
+    } else {
+	const cairo_rectangle_int_t *r = &extents->unbounded;
+
+	if (antialias == CAIRO_ANTIALIAS_FAST) {
+	    converter = _cairo_tor22_scan_converter_create (r->x, r->y,
+							    r->x + r->width,
+							    r->y + r->height,
+							    fill_rule, antialias);
+	    status = _cairo_tor22_scan_converter_add_polygon (converter, polygon);
+	} else if (antialias == CAIRO_ANTIALIAS_NONE) {
+	    converter = _cairo_mono_scan_converter_create (r->x, r->y,
+							   r->x + r->width,
+							   r->y + r->height,
+							   fill_rule);
+	    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
+	} else {
+	    converter = _cairo_tor_scan_converter_create (r->x, r->y,
+							  r->x + r->width,
+							  r->y + r->height,
+							  fill_rule, antialias);
+	    status = _cairo_tor_scan_converter_add_polygon (converter, polygon);
+	}
+    }
+    if (unlikely (status))
+	goto cleanup_converter;
+
+    status = compositor->renderer_init (&renderer, extents,
+					antialias, needs_clip);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = converter->generate (converter, &renderer.base);
+    compositor->renderer_fini (&renderer, status);
+
+cleanup_converter:
+    converter->destroy (converter);
+    return status;
+}
+
+static cairo_int_status_t
+trim_extents_to_boxes (cairo_composite_rectangles_t *extents,
+		       cairo_boxes_t *boxes)
+{
+    cairo_box_t box;
+
+    _cairo_boxes_extents (boxes, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_int_status_t
+trim_extents_to_polygon (cairo_composite_rectangles_t *extents,
+			 cairo_polygon_t *polygon)
+{
+    return _cairo_composite_rectangles_intersect_mask_extents (extents,
+							       &polygon->extents);
+}
+
+static cairo_int_status_t
+clip_and_composite_boxes (const cairo_spans_compositor_t	*compositor,
+			  cairo_composite_rectangles_t		*extents,
+			  cairo_boxes_t				*boxes)
+{
+    cairo_int_status_t status;
+    cairo_polygon_t polygon;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    status = trim_extents_to_boxes (extents, boxes);
+    if (unlikely (status))
+	return status;
+
+    if (boxes->num_boxes == 0) {
+	if (extents->is_bounded)
+	    return CAIRO_STATUS_SUCCESS;
+
+	return fixup_unbounded_boxes (compositor, extents, boxes);
+    }
+
+    /* Can we reduce drawing through a clip-mask to simply drawing the clip? */
+    if (extents->clip->path != NULL && extents->is_bounded) {
+	cairo_polygon_t polygon;
+	cairo_fill_rule_t fill_rule;
+	cairo_antialias_t antialias;
+	cairo_clip_t *clip;
+
+	clip = _cairo_clip_copy (extents->clip);
+	clip = _cairo_clip_intersect_boxes (clip, boxes);
+	if (_cairo_clip_is_all_clipped (clip))
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+	status = _cairo_clip_get_polygon (clip, &polygon,
+					  &fill_rule, &antialias);
+	_cairo_clip_path_destroy (clip->path);
+	clip->path = NULL;
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    cairo_clip_t *saved_clip = extents->clip;
+	    extents->clip = clip;
+
+	    status = clip_and_composite_polygon (compositor, extents, &polygon,
+						 fill_rule, antialias);
+
+	    clip = extents->clip;
+	    extents->clip = saved_clip;
+
+	    _cairo_polygon_fini (&polygon);
+	}
+	_cairo_clip_destroy (clip);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    if (boxes->is_pixel_aligned) {
+	status = composite_aligned_boxes (compositor, extents, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    status = composite_boxes (compositor, extents, boxes);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_polygon_init_boxes (&polygon, boxes);
+    if (unlikely (status))
+	return status;
+
+    status = composite_polygon (compositor, extents, &polygon,
+				CAIRO_FILL_RULE_WINDING,
+				CAIRO_ANTIALIAS_DEFAULT);
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+static cairo_int_status_t
+clip_and_composite_polygon (const cairo_spans_compositor_t	*compositor,
+			    cairo_composite_rectangles_t	 *extents,
+			    cairo_polygon_t			*polygon,
+			    cairo_fill_rule_t			 fill_rule,
+			    cairo_antialias_t			 antialias)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    /* XXX simply uses polygon limits.point extemities, tessellation? */
+    status = trim_extents_to_polygon (extents, polygon);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_polygon_is_empty (polygon)) {
+	cairo_boxes_t boxes;
+
+	if (extents->is_bounded)
+	    return CAIRO_STATUS_SUCCESS;
+
+	_cairo_boxes_init (&boxes);
+	extents->bounded.width = extents->bounded.height = 0;
+	return fixup_unbounded_boxes (compositor, extents, &boxes);
+    }
+
+    if (extents->is_bounded && extents->clip->path) {
+	cairo_polygon_t clipper;
+	cairo_antialias_t clip_antialias;
+	cairo_fill_rule_t clip_fill_rule;
+
+	TRACE((stderr, "%s - combining shape with clip polygon\n",
+	       __FUNCTION__));
+
+	status = _cairo_clip_get_polygon (extents->clip,
+					  &clipper,
+					  &clip_fill_rule,
+					  &clip_antialias);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    cairo_clip_t *old_clip;
+
+	    if (clip_antialias == antialias) {
+		status = _cairo_polygon_intersect (polygon, fill_rule,
+						   &clipper, clip_fill_rule);
+		_cairo_polygon_fini (&clipper);
+		if (unlikely (status))
+		    return status;
+
+		old_clip = extents->clip;
+		extents->clip = _cairo_clip_copy_region (extents->clip);
+		_cairo_clip_destroy (old_clip);
+
+		status = trim_extents_to_polygon (extents, polygon);
+		if (unlikely (status))
+		    return status;
+
+		fill_rule = CAIRO_FILL_RULE_WINDING;
+	    } else {
+		_cairo_polygon_fini (&clipper);
+	    }
+	}
+    }
+
+    return composite_polygon (compositor, extents,
+			      polygon, fill_rule, antialias);
+}
+
+/* high-level compositor interface */
+
+static cairo_int_status_t
+_cairo_spans_compositor_paint (const cairo_compositor_t		*_compositor,
+			       cairo_composite_rectangles_t	*extents)
+{
+    const cairo_spans_compositor_t *compositor = (cairo_spans_compositor_t*)_compositor;
+    cairo_boxes_t boxes;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    _cairo_clip_steal_boxes (extents->clip, &boxes);
+    status = clip_and_composite_boxes (compositor, extents, &boxes);
+    _cairo_clip_unsteal_boxes (extents->clip, &boxes);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_spans_compositor_mask (const cairo_compositor_t		*_compositor,
+			      cairo_composite_rectangles_t	*extents)
+{
+    const cairo_spans_compositor_t *compositor = (cairo_spans_compositor_t*)_compositor;
+    cairo_int_status_t status;
+    cairo_boxes_t boxes;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    _cairo_clip_steal_boxes (extents->clip, &boxes);
+    status = clip_and_composite_boxes (compositor, extents, &boxes);
+    _cairo_clip_unsteal_boxes (extents->clip, &boxes);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_spans_compositor_stroke (const cairo_compositor_t	*_compositor,
+				cairo_composite_rectangles_t	 *extents,
+				const cairo_path_fixed_t	*path,
+				const cairo_stroke_style_t	*style,
+				const cairo_matrix_t		*ctm,
+				const cairo_matrix_t		*ctm_inverse,
+				double				 tolerance,
+				cairo_antialias_t		 antialias)
+{
+    const cairo_spans_compositor_t *compositor = (cairo_spans_compositor_t*)_compositor;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    TRACE_ (_cairo_debug_print_path (stderr, path));
+    TRACE_ (_cairo_debug_print_clip (stderr, extents->clip));
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	if (! _cairo_clip_contains_rectangle (extents->clip, &extents->mask))
+	    _cairo_boxes_limit (&boxes,
+				extents->clip->boxes,
+				extents->clip->num_boxes);
+
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								style,
+								ctm,
+								antialias,
+								&boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_polygon_t polygon;
+	cairo_fill_rule_t fill_rule = CAIRO_FILL_RULE_WINDING;
+
+	if (! _cairo_rectangle_contains_rectangle (&extents->unbounded,
+						   &extents->mask))
+	{
+	    if (extents->clip->num_boxes == 1) {
+		_cairo_polygon_init (&polygon, extents->clip->boxes, 1);
+	    } else {
+		cairo_box_t limits;
+		_cairo_box_from_rectangle (&limits, &extents->unbounded);
+		_cairo_polygon_init (&polygon, &limits, 1);
+	    }
+	}
+	else
+	{
+	    _cairo_polygon_init (&polygon, NULL, 0);
+	}
+	status = _cairo_path_fixed_stroke_to_polygon (path,
+						      style,
+						      ctm, ctm_inverse,
+						      tolerance,
+						      &polygon);
+	TRACE_ (_cairo_debug_print_polygon (stderr, &polygon));
+	polygon.num_limits = 0;
+
+	if (status == CAIRO_INT_STATUS_SUCCESS && extents->clip->num_boxes > 1) {
+	    status = _cairo_polygon_intersect_with_boxes (&polygon, &fill_rule,
+							  extents->clip->boxes,
+							  extents->clip->num_boxes);
+	}
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    cairo_clip_t *saved_clip = extents->clip;
+
+	    if (extents->is_bounded) {
+		extents->clip = _cairo_clip_copy_path (extents->clip);
+		extents->clip = _cairo_clip_intersect_box(extents->clip,
+							  &polygon.extents);
+	    }
+
+	    status = clip_and_composite_polygon (compositor, extents, &polygon,
+						 fill_rule, antialias);
+
+	    if (extents->is_bounded) {
+		_cairo_clip_destroy (extents->clip);
+		extents->clip = saved_clip;
+	    }
+	}
+	_cairo_polygon_fini (&polygon);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_spans_compositor_fill (const cairo_compositor_t		*_compositor,
+			      cairo_composite_rectangles_t	 *extents,
+			      const cairo_path_fixed_t		*path,
+			      cairo_fill_rule_t			 fill_rule,
+			      double				 tolerance,
+			      cairo_antialias_t			 antialias)
+{
+    const cairo_spans_compositor_t *compositor = (cairo_spans_compositor_t*)_compositor;
+    cairo_int_status_t status;
+
+    TRACE((stderr, "%s op=%d, antialias=%d\n", __FUNCTION__, extents->op, antialias));
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	TRACE((stderr, "%s - rectilinear\n", __FUNCTION__));
+
+	_cairo_boxes_init (&boxes);
+	if (! _cairo_clip_contains_rectangle (extents->clip, &extents->mask))
+	    _cairo_boxes_limit (&boxes,
+				extents->clip->boxes,
+				extents->clip->num_boxes);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      antialias,
+							      &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_polygon_t polygon;
+
+	TRACE((stderr, "%s - polygon\n", __FUNCTION__));
+
+	if (! _cairo_rectangle_contains_rectangle (&extents->unbounded,
+						   &extents->mask))
+	{
+	    TRACE((stderr, "%s - clipping to bounds\n", __FUNCTION__));
+	    if (extents->clip->num_boxes == 1) {
+		_cairo_polygon_init (&polygon, extents->clip->boxes, 1);
+	    } else {
+		cairo_box_t limits;
+		_cairo_box_from_rectangle (&limits, &extents->unbounded);
+		_cairo_polygon_init (&polygon, &limits, 1);
+	    }
+	}
+	else
+	{
+	    _cairo_polygon_init (&polygon, NULL, 0);
+	}
+
+	status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon);
+	TRACE_ (_cairo_debug_print_polygon (stderr, &polygon));
+	polygon.num_limits = 0;
+
+	if (status == CAIRO_INT_STATUS_SUCCESS && extents->clip->num_boxes > 1) {
+	    TRACE((stderr, "%s - polygon intersect with %d clip boxes\n",
+		   __FUNCTION__, extents->clip->num_boxes));
+	    status = _cairo_polygon_intersect_with_boxes (&polygon, &fill_rule,
+							  extents->clip->boxes,
+							  extents->clip->num_boxes);
+	}
+	TRACE_ (_cairo_debug_print_polygon (stderr, &polygon));
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    cairo_clip_t *saved_clip = extents->clip;
+
+	    if (extents->is_bounded) {
+		TRACE((stderr, "%s - polygon discard clip boxes\n",
+		       __FUNCTION__));
+		extents->clip = _cairo_clip_copy_path (extents->clip);
+		extents->clip = _cairo_clip_intersect_box(extents->clip,
+							  &polygon.extents);
+	    }
+
+	    status = clip_and_composite_polygon (compositor, extents, &polygon,
+						 fill_rule, antialias);
+
+	    if (extents->is_bounded) {
+		_cairo_clip_destroy (extents->clip);
+		extents->clip = saved_clip;
+	    }
+	}
+	_cairo_polygon_fini (&polygon);
+
+	TRACE((stderr, "%s - polygon status=%d\n", __FUNCTION__, status));
+    }
+
+    return status;
+}
+
+void
+_cairo_spans_compositor_init (cairo_spans_compositor_t *compositor,
+			      const cairo_compositor_t  *delegate)
+{
+    compositor->base.delegate = delegate;
+
+    compositor->base.paint  = _cairo_spans_compositor_paint;
+    compositor->base.mask   = _cairo_spans_compositor_mask;
+    compositor->base.fill   = _cairo_spans_compositor_fill;
+    compositor->base.stroke = _cairo_spans_compositor_stroke;
+    compositor->base.glyphs = NULL;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-spans-private.h b/libs/cairo-1.16.0/src/cairo-spans-private.h
new file mode 100644
index 0000000..653183f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-spans-private.h
@@ -0,0 +1,210 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2008  M Joonas Pihlaja
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef CAIRO_SPANS_PRIVATE_H
+#define CAIRO_SPANS_PRIVATE_H
+#include "cairo-types-private.h"
+#include "cairo-compiler-private.h"
+
+/* Number of bits of precision used for alpha. */
+#define CAIRO_SPANS_UNIT_COVERAGE_BITS 8
+#define CAIRO_SPANS_UNIT_COVERAGE ((1 << CAIRO_SPANS_UNIT_COVERAGE_BITS)-1)
+
+/* A structure representing an open-ended horizontal span of constant
+ * pixel coverage. */
+typedef struct _cairo_half_open_span {
+    int32_t x; /* The inclusive x-coordinate of the start of the span. */
+    uint8_t coverage; /* The pixel coverage for the pixels to the right. */
+    uint8_t inverse; /* between regular mask and clip */
+} cairo_half_open_span_t;
+
+/* Span renderer interface. Instances of renderers are provided by
+ * surfaces if they want to composite spans instead of trapezoids. */
+typedef struct _cairo_span_renderer cairo_span_renderer_t;
+struct _cairo_span_renderer {
+    /* Private status variable. */
+    cairo_status_t status;
+
+    /* Called to destroy the renderer. */
+    cairo_destroy_func_t	destroy;
+
+    /* Render the spans on row y of the destination by whatever compositing
+     * method is required. */
+    cairo_status_t
+    (*render_rows) (void *abstract_renderer,
+		    int y, int height,
+		    const cairo_half_open_span_t	*coverages,
+		    unsigned num_coverages);
+
+    /* Called after all rows have been rendered to perform whatever
+     * final rendering step is required.  This function is called just
+     * once before the renderer is destroyed. */
+    cairo_status_t (*finish) (void *abstract_renderer);
+};
+
+/* Scan converter interface. */
+typedef struct _cairo_scan_converter cairo_scan_converter_t;
+struct _cairo_scan_converter {
+    /* Destroy this scan converter. */
+    cairo_destroy_func_t	destroy;
+
+    /* Generates coverage spans for rows for the added edges and calls
+     * the renderer function for each row. After generating spans the
+     * only valid thing to do with the converter is to destroy it. */
+    cairo_status_t (*generate) (void			*abstract_converter,
+				cairo_span_renderer_t	*renderer);
+
+    /* Private status. Read with _cairo_scan_converter_status(). */
+    cairo_status_t status;
+};
+
+/* Scan converter constructors. */
+
+cairo_private cairo_scan_converter_t *
+_cairo_tor_scan_converter_create (int			xmin,
+				  int			ymin,
+				  int			xmax,
+				  int			ymax,
+				  cairo_fill_rule_t	fill_rule,
+				  cairo_antialias_t	antialias);
+cairo_private cairo_status_t
+_cairo_tor_scan_converter_add_polygon (void		*converter,
+				       const cairo_polygon_t *polygon);
+
+cairo_private cairo_scan_converter_t *
+_cairo_tor22_scan_converter_create (int			xmin,
+				    int			ymin,
+				    int			xmax,
+				    int			ymax,
+				    cairo_fill_rule_t	fill_rule,
+				    cairo_antialias_t	antialias);
+cairo_private cairo_status_t
+_cairo_tor22_scan_converter_add_polygon (void		*converter,
+					 const cairo_polygon_t *polygon);
+
+cairo_private cairo_scan_converter_t *
+_cairo_mono_scan_converter_create (int			xmin,
+				   int			ymin,
+				   int			xmax,
+				   int			ymax,
+				   cairo_fill_rule_t	fill_rule);
+cairo_private cairo_status_t
+_cairo_mono_scan_converter_add_polygon (void		*converter,
+					const cairo_polygon_t *polygon);
+
+cairo_private cairo_scan_converter_t *
+_cairo_clip_tor_scan_converter_create (cairo_clip_t *clip,
+				       cairo_polygon_t *polygon,
+				       cairo_fill_rule_t fill_rule,
+				       cairo_antialias_t antialias);
+
+typedef struct _cairo_rectangular_scan_converter {
+    cairo_scan_converter_t base;
+
+    cairo_box_t extents;
+
+    struct _cairo_rectangular_scan_converter_chunk {
+	struct _cairo_rectangular_scan_converter_chunk *next;
+	void *base;
+	int count;
+	int size;
+    } chunks, *tail;
+    char buf[CAIRO_STACK_BUFFER_SIZE];
+    int num_rectangles;
+} cairo_rectangular_scan_converter_t;
+
+cairo_private void
+_cairo_rectangular_scan_converter_init (cairo_rectangular_scan_converter_t *self,
+					const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_status_t
+_cairo_rectangular_scan_converter_add_box (cairo_rectangular_scan_converter_t *self,
+					   const cairo_box_t *box,
+					   int dir);
+
+typedef struct _cairo_botor_scan_converter {
+    cairo_scan_converter_t base;
+
+    cairo_box_t extents;
+    cairo_fill_rule_t fill_rule;
+
+    int xmin, xmax;
+
+    struct _cairo_botor_scan_converter_chunk {
+	struct _cairo_botor_scan_converter_chunk *next;
+	void *base;
+	int count;
+	int size;
+    } chunks, *tail;
+    char buf[CAIRO_STACK_BUFFER_SIZE];
+    int num_edges;
+} cairo_botor_scan_converter_t;
+
+cairo_private void
+_cairo_botor_scan_converter_init (cairo_botor_scan_converter_t *self,
+				  const cairo_box_t *extents,
+				  cairo_fill_rule_t fill_rule);
+
+cairo_private cairo_status_t
+_cairo_botor_scan_converter_add_polygon (cairo_botor_scan_converter_t *converter,
+					const cairo_polygon_t *polygon);
+
+/* cairo-spans.c: */
+
+cairo_private cairo_scan_converter_t *
+_cairo_scan_converter_create_in_error (cairo_status_t error);
+
+cairo_private cairo_status_t
+_cairo_scan_converter_status (void *abstract_converter);
+
+cairo_private cairo_status_t
+_cairo_scan_converter_set_error (void *abstract_converter,
+				 cairo_status_t error);
+
+cairo_private cairo_span_renderer_t *
+_cairo_span_renderer_create_in_error (cairo_status_t error);
+
+cairo_private cairo_status_t
+_cairo_span_renderer_status (void *abstract_renderer);
+
+/* Set the renderer into an error state.  This sets all the method
+ * pointers except ->destroy() of the renderer to no-op
+ * implementations that just return the error status. */
+cairo_private cairo_status_t
+_cairo_span_renderer_set_error (void *abstract_renderer,
+				cairo_status_t error);
+
+cairo_private cairo_status_t
+_cairo_surface_composite_polygon (cairo_surface_t	*surface,
+				  cairo_operator_t	 op,
+				  const cairo_pattern_t	*pattern,
+				  cairo_fill_rule_t	fill_rule,
+				  cairo_antialias_t	antialias,
+				  const cairo_composite_rectangles_t *rects,
+				  cairo_polygon_t	*polygon,
+				  cairo_region_t	*clip_region);
+
+#endif /* CAIRO_SPANS_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-spans.c b/libs/cairo-1.16.0/src/cairo-spans.c
new file mode 100644
index 0000000..59452c0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-spans.c
@@ -0,0 +1,258 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2008  M Joonas Pihlaja
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "cairoint.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-fixed-private.h"
+#include "cairo-types-private.h"
+
+static void
+_cairo_nil_destroy (void *abstract)
+{
+    (void) abstract;
+}
+
+static cairo_status_t
+_cairo_nil_scan_converter_generate (void *abstract_converter,
+				    cairo_span_renderer_t *renderer)
+{
+    (void) abstract_converter;
+    (void) renderer;
+    return _cairo_scan_converter_status (abstract_converter);
+}
+
+cairo_status_t
+_cairo_scan_converter_status (void *abstract_converter)
+{
+    cairo_scan_converter_t *converter = abstract_converter;
+    return converter->status;
+}
+
+cairo_status_t
+_cairo_scan_converter_set_error (void *abstract_converter,
+				 cairo_status_t error)
+{
+    cairo_scan_converter_t *converter = abstract_converter;
+    if (error == CAIRO_STATUS_SUCCESS)
+	ASSERT_NOT_REACHED;
+    if (converter->status == CAIRO_STATUS_SUCCESS) {
+	converter->generate = _cairo_nil_scan_converter_generate;
+	converter->status = error;
+    }
+    return converter->status;
+}
+
+static void
+_cairo_nil_scan_converter_init (cairo_scan_converter_t *converter,
+				cairo_status_t status)
+{
+    converter->destroy = _cairo_nil_destroy;
+    converter->status = CAIRO_STATUS_SUCCESS;
+    status = _cairo_scan_converter_set_error (converter, status);
+}
+
+cairo_scan_converter_t *
+_cairo_scan_converter_create_in_error (cairo_status_t status)
+{
+#define RETURN_NIL {\
+	    static cairo_scan_converter_t nil;\
+	    _cairo_nil_scan_converter_init (&nil, status);\
+	    return &nil;\
+	}
+    switch (status) {
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	break;
+    case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
+    case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
+    case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
+    case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
+    case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
+    case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
+    case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+    case CAIRO_STATUS_PNG_ERROR:
+    case CAIRO_STATUS_FREETYPE_ERROR:
+    case CAIRO_STATUS_WIN32_GDI_ERROR:
+    case CAIRO_STATUS_TAG_ERROR:
+    default:
+	break;
+    }
+    status = CAIRO_STATUS_NO_MEMORY;
+    RETURN_NIL;
+#undef RETURN_NIL
+}
+
+static cairo_status_t
+_cairo_nil_span_renderer_render_rows (
+    void				*abstract_renderer,
+    int					 y,
+    int					 height,
+    const cairo_half_open_span_t	*coverages,
+    unsigned				 num_coverages)
+{
+    (void) y;
+    (void) height;
+    (void) coverages;
+    (void) num_coverages;
+    return _cairo_span_renderer_status (abstract_renderer);
+}
+
+static cairo_status_t
+_cairo_nil_span_renderer_finish (void *abstract_renderer)
+{
+    return _cairo_span_renderer_status (abstract_renderer);
+}
+
+cairo_status_t
+_cairo_span_renderer_status (void *abstract_renderer)
+{
+    cairo_span_renderer_t *renderer = abstract_renderer;
+    return renderer->status;
+}
+
+cairo_status_t
+_cairo_span_renderer_set_error (
+    void *abstract_renderer,
+    cairo_status_t error)
+{
+    cairo_span_renderer_t *renderer = abstract_renderer;
+    if (error == CAIRO_STATUS_SUCCESS) {
+	ASSERT_NOT_REACHED;
+    }
+    if (renderer->status == CAIRO_STATUS_SUCCESS) {
+	renderer->render_rows = _cairo_nil_span_renderer_render_rows;
+	renderer->finish = _cairo_nil_span_renderer_finish;
+	renderer->status = error;
+    }
+    return renderer->status;
+}
+
+static void
+_cairo_nil_span_renderer_init (cairo_span_renderer_t *renderer,
+			       cairo_status_t status)
+{
+    renderer->destroy = _cairo_nil_destroy;
+    renderer->status = CAIRO_STATUS_SUCCESS;
+    status = _cairo_span_renderer_set_error (renderer, status);
+}
+
+cairo_span_renderer_t *
+_cairo_span_renderer_create_in_error (cairo_status_t status)
+{
+#define RETURN_NIL {\
+	    static cairo_span_renderer_t nil;\
+	    _cairo_nil_span_renderer_init (&nil, status);\
+	    return &nil;\
+	}
+    switch (status) {
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	break;
+    case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
+    case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
+    case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
+    case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
+    case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
+    case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
+    case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING: RETURN_NIL;
+    case CAIRO_STATUS_PNG_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_FREETYPE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_WIN32_GDI_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_TAG_ERROR: RETURN_NIL;
+    default:
+	break;
+    }
+    status = CAIRO_STATUS_NO_MEMORY;
+    RETURN_NIL;
+#undef RETURN_NIL
+}
diff --git a/libs/cairo-1.16.0/src/cairo-spline.c b/libs/cairo-1.16.0/src/cairo-spline.c
new file mode 100644
index 0000000..44634fa
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-spline.c
@@ -0,0 +1,424 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-slope-private.h"
+
+cairo_bool_t
+_cairo_spline_intersects (const cairo_point_t *a,
+			  const cairo_point_t *b,
+			  const cairo_point_t *c,
+			  const cairo_point_t *d,
+			  const cairo_box_t *box)
+{
+    cairo_box_t bounds;
+
+    if (_cairo_box_contains_point (box, a) ||
+	_cairo_box_contains_point (box, b) ||
+	_cairo_box_contains_point (box, c) ||
+	_cairo_box_contains_point (box, d))
+    {
+	return TRUE;
+    }
+
+    bounds.p2 = bounds.p1 = *a;
+    _cairo_box_add_point (&bounds, b);
+    _cairo_box_add_point (&bounds, c);
+    _cairo_box_add_point (&bounds, d);
+
+    if (bounds.p2.x <= box->p1.x || bounds.p1.x >= box->p2.x ||
+	bounds.p2.y <= box->p1.y || bounds.p1.y >= box->p2.y)
+    {
+	return FALSE;
+    }
+
+#if 0 /* worth refining? */
+    bounds.p2 = bounds.p1 = *a;
+    _cairo_box_add_curve_to (&bounds, b, c, d);
+    if (bounds.p2.x <= box->p1.x || bounds.p1.x >= box->p2.x ||
+	bounds.p2.y <= box->p1.y || bounds.p1.y >= box->p2.y)
+    {
+	return FALSE;
+    }
+#endif
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_spline_init (cairo_spline_t *spline,
+		    cairo_spline_add_point_func_t add_point_func,
+		    void *closure,
+		    const cairo_point_t *a, const cairo_point_t *b,
+		    const cairo_point_t *c, const cairo_point_t *d)
+{
+    /* If both tangents are zero, this is just a straight line */
+    if (a->x == b->x && a->y == b->y && c->x == d->x && c->y == d->y)
+	return FALSE;
+
+    spline->add_point_func = add_point_func;
+    spline->closure = closure;
+
+    spline->knots.a = *a;
+    spline->knots.b = *b;
+    spline->knots.c = *c;
+    spline->knots.d = *d;
+
+    if (a->x != b->x || a->y != b->y)
+	_cairo_slope_init (&spline->initial_slope, &spline->knots.a, &spline->knots.b);
+    else if (a->x != c->x || a->y != c->y)
+	_cairo_slope_init (&spline->initial_slope, &spline->knots.a, &spline->knots.c);
+    else if (a->x != d->x || a->y != d->y)
+	_cairo_slope_init (&spline->initial_slope, &spline->knots.a, &spline->knots.d);
+    else
+	return FALSE;
+
+    if (c->x != d->x || c->y != d->y)
+	_cairo_slope_init (&spline->final_slope, &spline->knots.c, &spline->knots.d);
+    else if (b->x != d->x || b->y != d->y)
+	_cairo_slope_init (&spline->final_slope, &spline->knots.b, &spline->knots.d);
+    else
+	return FALSE; /* just treat this as a straight-line from a -> d */
+
+    /* XXX if the initial, final and vector are all equal, this is just a line */
+
+    return TRUE;
+}
+
+static cairo_status_t
+_cairo_spline_add_point (cairo_spline_t *spline,
+			 const cairo_point_t *point,
+			 const cairo_point_t *knot)
+{
+    cairo_point_t *prev;
+    cairo_slope_t slope;
+
+    prev = &spline->last_point;
+    if (prev->x == point->x && prev->y == point->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_slope_init (&slope, point, knot);
+
+    spline->last_point = *point;
+    return spline->add_point_func (spline->closure, point, &slope);
+}
+
+static void
+_lerp_half (const cairo_point_t *a, const cairo_point_t *b, cairo_point_t *result)
+{
+    result->x = a->x + ((b->x - a->x) >> 1);
+    result->y = a->y + ((b->y - a->y) >> 1);
+}
+
+static void
+_de_casteljau (cairo_spline_knots_t *s1, cairo_spline_knots_t *s2)
+{
+    cairo_point_t ab, bc, cd;
+    cairo_point_t abbc, bccd;
+    cairo_point_t final;
+
+    _lerp_half (&s1->a, &s1->b, &ab);
+    _lerp_half (&s1->b, &s1->c, &bc);
+    _lerp_half (&s1->c, &s1->d, &cd);
+    _lerp_half (&ab, &bc, &abbc);
+    _lerp_half (&bc, &cd, &bccd);
+    _lerp_half (&abbc, &bccd, &final);
+
+    s2->a = final;
+    s2->b = bccd;
+    s2->c = cd;
+    s2->d = s1->d;
+
+    s1->b = ab;
+    s1->c = abbc;
+    s1->d = final;
+}
+
+/* Return an upper bound on the error (squared) that could result from
+ * approximating a spline as a line segment connecting the two endpoints. */
+static double
+_cairo_spline_error_squared (const cairo_spline_knots_t *knots)
+{
+    double bdx, bdy, berr;
+    double cdx, cdy, cerr;
+
+    /* We are going to compute the distance (squared) between each of the the b
+     * and c control points and the segment a-b. The maximum of these two
+     * distances will be our approximation error. */
+
+    bdx = _cairo_fixed_to_double (knots->b.x - knots->a.x);
+    bdy = _cairo_fixed_to_double (knots->b.y - knots->a.y);
+
+    cdx = _cairo_fixed_to_double (knots->c.x - knots->a.x);
+    cdy = _cairo_fixed_to_double (knots->c.y - knots->a.y);
+
+    if (knots->a.x != knots->d.x || knots->a.y != knots->d.y) {
+	/* Intersection point (px):
+	 *     px = p1 + u(p2 - p1)
+	 *     (p - px) ∙ (p2 - p1) = 0
+	 * Thus:
+	 *     u = ((p - p1) ∙ (p2 - p1)) / ∥p2 - p1∥²;
+	 */
+
+	double dx, dy, u, v;
+
+	dx = _cairo_fixed_to_double (knots->d.x - knots->a.x);
+	dy = _cairo_fixed_to_double (knots->d.y - knots->a.y);
+	 v = dx * dx + dy * dy;
+
+	u = bdx * dx + bdy * dy;
+	if (u <= 0) {
+	    /* bdx -= 0;
+	     * bdy -= 0;
+	     */
+	} else if (u >= v) {
+	    bdx -= dx;
+	    bdy -= dy;
+	} else {
+	    bdx -= u/v * dx;
+	    bdy -= u/v * dy;
+	}
+
+	u = cdx * dx + cdy * dy;
+	if (u <= 0) {
+	    /* cdx -= 0;
+	     * cdy -= 0;
+	     */
+	} else if (u >= v) {
+	    cdx -= dx;
+	    cdy -= dy;
+	} else {
+	    cdx -= u/v * dx;
+	    cdy -= u/v * dy;
+	}
+    }
+
+    berr = bdx * bdx + bdy * bdy;
+    cerr = cdx * cdx + cdy * cdy;
+    if (berr > cerr)
+	return berr;
+    else
+	return cerr;
+}
+
+static cairo_status_t
+_cairo_spline_decompose_into (cairo_spline_knots_t *s1,
+			      double tolerance_squared,
+			      cairo_spline_t *result)
+{
+    cairo_spline_knots_t s2;
+    cairo_status_t status;
+
+    if (_cairo_spline_error_squared (s1) < tolerance_squared)
+	return _cairo_spline_add_point (result, &s1->a, &s1->b);
+
+    _de_casteljau (s1, &s2);
+
+    status = _cairo_spline_decompose_into (s1, tolerance_squared, result);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_spline_decompose_into (&s2, tolerance_squared, result);
+}
+
+cairo_status_t
+_cairo_spline_decompose (cairo_spline_t *spline, double tolerance)
+{
+    cairo_spline_knots_t s1;
+    cairo_status_t status;
+
+    s1 = spline->knots;
+    spline->last_point = s1.a;
+    status = _cairo_spline_decompose_into (&s1, tolerance * tolerance, spline);
+    if (unlikely (status))
+	return status;
+
+    return spline->add_point_func (spline->closure,
+				   &spline->knots.d, &spline->final_slope);
+}
+
+/* Note: this function is only good for computing bounds in device space. */
+cairo_status_t
+_cairo_spline_bound (cairo_spline_add_point_func_t add_point_func,
+		     void *closure,
+		     const cairo_point_t *p0, const cairo_point_t *p1,
+		     const cairo_point_t *p2, const cairo_point_t *p3)
+{
+    double x0, x1, x2, x3;
+    double y0, y1, y2, y3;
+    double a, b, c;
+    double t[4];
+    int t_num = 0, i;
+    cairo_status_t status;
+
+    x0 = _cairo_fixed_to_double (p0->x);
+    y0 = _cairo_fixed_to_double (p0->y);
+    x1 = _cairo_fixed_to_double (p1->x);
+    y1 = _cairo_fixed_to_double (p1->y);
+    x2 = _cairo_fixed_to_double (p2->x);
+    y2 = _cairo_fixed_to_double (p2->y);
+    x3 = _cairo_fixed_to_double (p3->x);
+    y3 = _cairo_fixed_to_double (p3->y);
+
+    /* The spline can be written as a polynomial of the four points:
+     *
+     *   (1-t)³p0 + 3t(1-t)²p1 + 3t²(1-t)p2 + t³p3
+     *
+     * for 0≤t≤1.  Now, the X and Y components of the spline follow the
+     * same polynomial but with x and y replaced for p.  To find the
+     * bounds of the spline, we just need to find the X and Y bounds.
+     * To find the bound, we take the derivative and equal it to zero,
+     * and solve to find the t's that give the extreme points.
+     *
+     * Here is the derivative of the curve, sorted on t:
+     *
+     *   3t²(-p0+3p1-3p2+p3) + 2t(3p0-6p1+3p2) -3p0+3p1
+     *
+     * Let:
+     *
+     *   a = -p0+3p1-3p2+p3
+     *   b =  p0-2p1+p2
+     *   c = -p0+p1
+     *
+     * Gives:
+     *
+     *   a.t² + 2b.t + c = 0
+     *
+     * With:
+     *
+     *   delta = b*b - a*c
+     *
+     * the extreme points are at -c/2b if a is zero, at (-b±√delta)/a if
+     * delta is positive, and at -b/a if delta is zero.
+     */
+
+#define ADD(t0) \
+    { \
+	double _t0 = (t0); \
+	if (0 < _t0 && _t0 < 1) \
+	    t[t_num++] = _t0; \
+    }
+
+#define FIND_EXTREMES(a,b,c) \
+    { \
+	if (a == 0) { \
+	    if (b != 0) \
+		ADD (-c / (2*b)); \
+	} else { \
+	    double b2 = b * b; \
+	    double delta = b2 - a * c; \
+	    if (delta > 0) { \
+		cairo_bool_t feasible; \
+		double _2ab = 2 * a * b; \
+		/* We are only interested in solutions t that satisfy 0<t<1 \
+		 * here.  We do some checks to avoid sqrt if the solutions \
+		 * are not in that range.  The checks can be derived from: \
+		 * \
+		 *   0 < (-b±√delta)/a < 1 \
+		 */ \
+		if (_2ab >= 0) \
+		    feasible = delta > b2 && delta < a*a + b2 + _2ab; \
+		else if (-b / a >= 1) \
+		    feasible = delta < b2 && delta > a*a + b2 + _2ab; \
+		else \
+		    feasible = delta < b2 || delta < a*a + b2 + _2ab; \
+	        \
+		if (unlikely (feasible)) { \
+		    double sqrt_delta = sqrt (delta); \
+		    ADD ((-b - sqrt_delta) / a); \
+		    ADD ((-b + sqrt_delta) / a); \
+		} \
+	    } else if (delta == 0) { \
+		ADD (-b / a); \
+	    } \
+	} \
+    }
+
+    /* Find X extremes */
+    a = -x0 + 3*x1 - 3*x2 + x3;
+    b =  x0 - 2*x1 + x2;
+    c = -x0 + x1;
+    FIND_EXTREMES (a, b, c);
+
+    /* Find Y extremes */
+    a = -y0 + 3*y1 - 3*y2 + y3;
+    b =  y0 - 2*y1 + y2;
+    c = -y0 + y1;
+    FIND_EXTREMES (a, b, c);
+
+    status = add_point_func (closure, p0, NULL);
+    if (unlikely (status))
+	return status;
+
+    for (i = 0; i < t_num; i++) {
+	cairo_point_t p;
+	double x, y;
+        double t_1_0, t_0_1;
+        double t_2_0, t_0_2;
+        double t_3_0, t_2_1_3, t_1_2_3, t_0_3;
+
+        t_1_0 = t[i];          /*      t  */
+        t_0_1 = 1 - t_1_0;     /* (1 - t) */
+
+        t_2_0 = t_1_0 * t_1_0; /*      t  *      t  */
+        t_0_2 = t_0_1 * t_0_1; /* (1 - t) * (1 - t) */
+
+        t_3_0   = t_2_0 * t_1_0;     /*      t  *      t  *      t      */
+        t_2_1_3 = t_2_0 * t_0_1 * 3; /*      t  *      t  * (1 - t) * 3 */
+        t_1_2_3 = t_1_0 * t_0_2 * 3; /*      t  * (1 - t) * (1 - t) * 3 */
+        t_0_3   = t_0_1 * t_0_2;     /* (1 - t) * (1 - t) * (1 - t)     */
+
+        /* Bezier polynomial */
+        x = x0 * t_0_3
+          + x1 * t_1_2_3
+          + x2 * t_2_1_3
+          + x3 * t_3_0;
+        y = y0 * t_0_3
+          + y1 * t_1_2_3
+          + y2 * t_2_1_3
+          + y3 * t_3_0;
+
+	p.x = _cairo_fixed_from_double (x);
+	p.y = _cairo_fixed_from_double (y);
+	status = add_point_func (closure, &p, NULL);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return add_point_func (closure, p3, NULL);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-stroke-dash-private.h b/libs/cairo-1.16.0/src/cairo-stroke-dash-private.h
new file mode 100644
index 0000000..75c000c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-stroke-dash-private.h
@@ -0,0 +1,70 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_STROKE_DASH_PRIVATE_H
+#define CAIRO_STROKE_DASH_PRIVATE_H
+
+#include "cairoint.h"
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_stroker_dash {
+    cairo_bool_t dashed;
+    unsigned int dash_index;
+    cairo_bool_t dash_on;
+    cairo_bool_t dash_starts_on;
+    double dash_remain;
+
+    double dash_offset;
+    const double *dashes;
+    unsigned int num_dashes;
+} cairo_stroker_dash_t;
+
+cairo_private void
+_cairo_stroker_dash_init (cairo_stroker_dash_t *dash,
+			  const cairo_stroke_style_t *style);
+
+cairo_private void
+_cairo_stroker_dash_start (cairo_stroker_dash_t *dash);
+
+cairo_private void
+_cairo_stroker_dash_step (cairo_stroker_dash_t *dash, double step);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_STROKE_DASH_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-stroke-dash.c b/libs/cairo-1.16.0/src/cairo-stroke-dash.c
new file mode 100644
index 0000000..9494010
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-stroke-dash.c
@@ -0,0 +1,96 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-stroke-dash-private.h"
+
+void
+_cairo_stroker_dash_start (cairo_stroker_dash_t *dash)
+{
+    double offset;
+    cairo_bool_t on = TRUE;
+    unsigned int i = 0;
+
+    if (! dash->dashed)
+	return;
+
+    offset = dash->dash_offset;
+
+    /* We stop searching for a starting point as soon as the
+       offset reaches zero.  Otherwise when an initial dash
+       segment shrinks to zero it will be skipped over. */
+    while (offset > 0.0 && offset >= dash->dashes[i]) {
+	offset -= dash->dashes[i];
+	on = !on;
+	if (++i == dash->num_dashes)
+	    i = 0;
+    }
+
+    dash->dash_index = i;
+    dash->dash_on = dash->dash_starts_on = on;
+    dash->dash_remain = dash->dashes[i] - offset;
+}
+
+void
+_cairo_stroker_dash_step (cairo_stroker_dash_t *dash, double step)
+{
+    dash->dash_remain -= step;
+    if (dash->dash_remain < CAIRO_FIXED_ERROR_DOUBLE) {
+	if (++dash->dash_index == dash->num_dashes)
+	    dash->dash_index = 0;
+
+	dash->dash_on = ! dash->dash_on;
+	dash->dash_remain += dash->dashes[dash->dash_index];
+    }
+}
+
+void
+_cairo_stroker_dash_init (cairo_stroker_dash_t *dash,
+			  const cairo_stroke_style_t *style)
+{
+    dash->dashed = style->dash != NULL;
+    if (! dash->dashed)
+	return;
+
+    dash->dashes = style->dash;
+    dash->num_dashes = style->num_dashes;
+    dash->dash_offset = style->dash_offset;
+
+    _cairo_stroker_dash_start (dash);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-stroke-style.c b/libs/cairo-1.16.0/src/cairo-stroke-style.c
new file mode 100644
index 0000000..9c373c3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-stroke-style.c
@@ -0,0 +1,354 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+void
+_cairo_stroke_style_init (cairo_stroke_style_t *style)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (style, sizeof (cairo_stroke_style_t)));
+
+    style->line_width = CAIRO_GSTATE_LINE_WIDTH_DEFAULT;
+    style->line_cap = CAIRO_GSTATE_LINE_CAP_DEFAULT;
+    style->line_join = CAIRO_GSTATE_LINE_JOIN_DEFAULT;
+    style->miter_limit = CAIRO_GSTATE_MITER_LIMIT_DEFAULT;
+
+    style->dash = NULL;
+    style->num_dashes = 0;
+    style->dash_offset = 0.0;
+}
+
+cairo_status_t
+_cairo_stroke_style_init_copy (cairo_stroke_style_t *style,
+			       const cairo_stroke_style_t *other)
+{
+    if (CAIRO_INJECT_FAULT ())
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (style, sizeof (cairo_stroke_style_t)));
+
+    style->line_width = other->line_width;
+    style->line_cap = other->line_cap;
+    style->line_join = other->line_join;
+    style->miter_limit = other->miter_limit;
+
+    style->num_dashes = other->num_dashes;
+
+    if (other->dash == NULL) {
+	style->dash = NULL;
+    } else {
+	style->dash = _cairo_malloc_ab (style->num_dashes, sizeof (double));
+	if (unlikely (style->dash == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	memcpy (style->dash, other->dash,
+		style->num_dashes * sizeof (double));
+    }
+
+    style->dash_offset = other->dash_offset;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_stroke_style_fini (cairo_stroke_style_t *style)
+{
+    free (style->dash);
+    style->dash = NULL;
+
+    style->num_dashes = 0;
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (style, sizeof (cairo_stroke_style_t)));
+}
+
+/*
+ * For a stroke in the given style, compute the maximum distance
+ * from the path that vertices could be generated.  In the case
+ * of rotation in the ctm, the distance will not be exact.
+ */
+void
+_cairo_stroke_style_max_distance_from_path (const cairo_stroke_style_t *style,
+					    const cairo_path_fixed_t *path,
+                                            const cairo_matrix_t *ctm,
+                                            double *dx, double *dy)
+{
+    double style_expansion = 0.5;
+
+    if (style->line_cap == CAIRO_LINE_CAP_SQUARE)
+	style_expansion = M_SQRT1_2;
+
+    if (style->line_join == CAIRO_LINE_JOIN_MITER &&
+	! path->stroke_is_rectilinear &&
+	style_expansion < M_SQRT2 * style->miter_limit)
+    {
+	style_expansion = M_SQRT2 * style->miter_limit;
+    }
+
+    style_expansion *= style->line_width;
+
+    if (_cairo_matrix_has_unity_scale (ctm)) {
+	*dx = *dy = style_expansion;
+    } else {
+	*dx = style_expansion * hypot (ctm->xx, ctm->xy);
+	*dy = style_expansion * hypot (ctm->yy, ctm->yx);
+    }
+}
+
+void
+_cairo_stroke_style_max_line_distance_from_path (const cairo_stroke_style_t *style,
+						 const cairo_path_fixed_t *path,
+						 const cairo_matrix_t *ctm,
+						 double *dx, double *dy)
+{
+    double style_expansion = 0.5 * style->line_width;
+    if (_cairo_matrix_has_unity_scale (ctm)) {
+	*dx = *dy = style_expansion;
+    } else {
+	*dx = style_expansion * hypot (ctm->xx, ctm->xy);
+	*dy = style_expansion * hypot (ctm->yy, ctm->yx);
+    }
+}
+
+void
+_cairo_stroke_style_max_join_distance_from_path (const cairo_stroke_style_t *style,
+						 const cairo_path_fixed_t *path,
+						 const cairo_matrix_t *ctm,
+						 double *dx, double *dy)
+{
+    double style_expansion = 0.5;
+
+    if (style->line_join == CAIRO_LINE_JOIN_MITER &&
+	! path->stroke_is_rectilinear &&
+	style_expansion < M_SQRT2 * style->miter_limit)
+    {
+	style_expansion = M_SQRT2 * style->miter_limit;
+    }
+
+    style_expansion *= style->line_width;
+
+    if (_cairo_matrix_has_unity_scale (ctm)) {
+	*dx = *dy = style_expansion;
+    } else {
+	*dx = style_expansion * hypot (ctm->xx, ctm->xy);
+	*dy = style_expansion * hypot (ctm->yy, ctm->yx);
+    }
+}
+/*
+ * Computes the period of a dashed stroke style.
+ * Returns 0 for non-dashed styles.
+ */
+double
+_cairo_stroke_style_dash_period (const cairo_stroke_style_t *style)
+{
+    double period;
+    unsigned int i;
+
+    period = 0.0;
+    for (i = 0; i < style->num_dashes; i++)
+	period += style->dash[i];
+
+    if (style->num_dashes & 1)
+	period *= 2.0;
+
+    return period;
+}
+
+/*
+ * Coefficient of the linear approximation (minimizing square difference)
+ * of the surface covered by round caps
+ *
+ * This can be computed in the following way:
+ * the area inside the circle with radius w/2 and the region -d/2 <= x <= d/2 is:
+ *   f(w,d) = 2 * integrate (sqrt (w*w/4 - x*x), x, -d/2, d/2)
+ * The square difference to a generic linear approximation (c*d) in the range (0,w) would be:
+ *   integrate ((f(w,d) - c*d)^2, d, 0, w)
+ * To minimize this difference it is sufficient to find a solution of the differential with
+ * respect to c:
+ *   solve ( diff (integrate ((f(w,d) - c*d)^2, d, 0, w), c), c)
+ * Which leads to c = 9/32*pi*w
+ * Since we're not interested in the true area, but just in a coverage extimate,
+ * we always divide the real area by the line width (w).
+ * The same computation for square caps would be
+ *   f(w,d) = 2 * integrate(w/2, x, -d/2, d/2)
+ *   c = 1*w
+ * but in this case it would not be an approximation, since f is already linear in d.
+ */
+#define ROUND_MINSQ_APPROXIMATION (9*M_PI/32)
+
+/*
+ * Computes the length of the "on" part of a dashed stroke style,
+ * taking into account also line caps.
+ * Returns 0 for non-dashed styles.
+ */
+double
+_cairo_stroke_style_dash_stroked (const cairo_stroke_style_t *style)
+{
+    double stroked, cap_scale;
+    unsigned int i;
+
+    switch (style->line_cap) {
+    default: ASSERT_NOT_REACHED;
+    case CAIRO_LINE_CAP_BUTT:   cap_scale = 0.0; break;
+    case CAIRO_LINE_CAP_ROUND:  cap_scale = ROUND_MINSQ_APPROXIMATION; break;
+    case CAIRO_LINE_CAP_SQUARE: cap_scale = 1.0; break;
+    }
+
+    stroked = 0.0;
+    if (style->num_dashes & 1) {
+        /* Each dash element is used both as on and as off. The order in which they are summed is
+	 * irrelevant, so sum the coverage of one dash element, taken both on and off at each iteration */
+	for (i = 0; i < style->num_dashes; i++)
+	    stroked += style->dash[i] + cap_scale * MIN (style->dash[i], style->line_width);
+    } else {
+        /* Even (0, 2, ...) dashes are on and simply counted for the coverage, odd dashes are off, thus
+	 * their coverage is approximated based on the area covered by the caps of adjacent on dases. */
+	for (i = 0; i + 1 < style->num_dashes; i += 2)
+	    stroked += style->dash[i] + cap_scale * MIN (style->dash[i+1], style->line_width);
+    }
+
+    return stroked;
+}
+
+/*
+ * Verifies if _cairo_stroke_style_dash_approximate should be used to generate
+ * an approximation of the dash pattern in the specified style, when used for
+ * stroking a path with the given CTM and tolerance.
+ * Always %FALSE for non-dashed styles.
+ */
+cairo_bool_t
+_cairo_stroke_style_dash_can_approximate (const cairo_stroke_style_t *style,
+					  const cairo_matrix_t *ctm,
+					  double tolerance)
+{
+    double period;
+
+    if (! style->num_dashes)
+        return FALSE;
+
+    period = _cairo_stroke_style_dash_period (style);
+    return _cairo_matrix_transformed_circle_major_axis (ctm, period) < tolerance;
+}
+
+/*
+ * Create a 2-dashes approximation of a dashed style, by making the "on" and "off"
+ * parts respect the original ratio.
+ */
+void
+_cairo_stroke_style_dash_approximate (const cairo_stroke_style_t *style,
+				      const cairo_matrix_t *ctm,
+				      double tolerance,
+				      double *dash_offset,
+				      double *dashes,
+				      unsigned int *num_dashes)
+{
+    double coverage, scale, offset;
+    cairo_bool_t on = TRUE;
+    unsigned int i = 0;
+
+    coverage = _cairo_stroke_style_dash_stroked (style) / _cairo_stroke_style_dash_period (style);
+    coverage = MIN (coverage, 1.0);
+    scale = tolerance / _cairo_matrix_transformed_circle_major_axis (ctm, 1.0);
+
+    /* We stop searching for a starting point as soon as the
+     * offset reaches zero.  Otherwise when an initial dash
+     * segment shrinks to zero it will be skipped over. */
+    offset = style->dash_offset;
+    while (offset > 0.0 && offset >= style->dash[i]) {
+	offset -= style->dash[i];
+	on = !on;
+	if (++i == style->num_dashes)
+	    i = 0;
+    }
+
+    *num_dashes = 2;
+
+    /*
+     * We want to create a new dash pattern with the same relative coverage,
+     * but composed of just 2 elements with total length equal to scale.
+     * Based on the formula in _cairo_stroke_style_dash_stroked:
+     * scale * coverage = dashes[0] + cap_scale * MIN (dashes[1], line_width)
+     *                  = MIN (dashes[0] + cap_scale * (scale - dashes[0]),
+     *                         dashes[0] + cap_scale * line_width) = 
+     *                  = MIN (dashes[0] * (1 - cap_scale) + cap_scale * scale,
+     *	                       dashes[0] + cap_scale * line_width)
+     *
+     * Solving both cases we get:
+     *   dashes[0] = scale * (coverage - cap_scale) / (1 - cap_scale)
+     *	  when scale - dashes[0] <= line_width
+     *	dashes[0] = scale * coverage - cap_scale * line_width
+     *	  when scale - dashes[0] > line_width.
+     *
+     * Comparing the two cases we get:
+     *   second > first
+     *   second > scale * (coverage - cap_scale) / (1 - cap_scale)
+     *   second - cap_scale * second - scale * coverage + scale * cap_scale > 0
+     * 	 (scale * coverage - cap_scale * line_width) - cap_scale * second - scale * coverage + scale * cap_scale > 0
+     *   - line_width - second + scale > 0
+     *   scale - second > line_width
+     * which is the condition for the second solution to be the valid one.
+     * So when second > first, the second solution is the correct one (i.e.
+     * the solution is always MAX (first, second).
+     */
+    switch (style->line_cap) {
+    default:
+        ASSERT_NOT_REACHED;
+	dashes[0] = 0.0;
+	break;
+
+    case CAIRO_LINE_CAP_BUTT:
+        /* Simplified formula (substituting 0 for cap_scale): */
+        dashes[0] = scale * coverage;
+	break;
+
+    case CAIRO_LINE_CAP_ROUND:
+        dashes[0] = MAX(scale * (coverage - ROUND_MINSQ_APPROXIMATION) / (1.0 - ROUND_MINSQ_APPROXIMATION),
+			scale * coverage - ROUND_MINSQ_APPROXIMATION * style->line_width);
+	break;
+
+    case CAIRO_LINE_CAP_SQUARE:
+        /*
+	 * Special attention is needed to handle the case cap_scale == 1 (since the first solution
+	 * is either indeterminate or -inf in this case). Since dash lengths are always >=0, using
+	 * 0 as first solution always leads to the correct solution.
+	 */
+        dashes[0] = MAX(0.0, scale * coverage - style->line_width);
+	break;
+    }
+
+    dashes[1] = scale - dashes[0];
+
+    *dash_offset = on ? 0.0 : dashes[0];
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-backend-private.h b/libs/cairo-1.16.0/src/cairo-surface-backend-private.h
new file mode 100644
index 0000000..bcda9ae
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-backend-private.h
@@ -0,0 +1,233 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_SURFACE_BACKEND_PRIVATE_H
+#define CAIRO_SURFACE_BACKEND_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo_surface_backend {
+    cairo_surface_type_t type;
+
+    cairo_warn cairo_status_t
+    (*finish)			(void			*surface);
+
+    cairo_t *
+    (*create_context)		(void			*surface);
+
+    cairo_surface_t *
+    (*create_similar)		(void			*surface,
+				 cairo_content_t	 content,
+				 int			 width,
+				 int			 height);
+    cairo_surface_t *
+    (*create_similar_image)	(void			*surface,
+				 cairo_format_t		format,
+				 int			 width,
+				 int			 height);
+
+    cairo_image_surface_t *
+    (*map_to_image)		(void			*surface,
+				 const cairo_rectangle_int_t  *extents);
+    cairo_int_status_t
+    (*unmap_image)		(void			*surface,
+				 cairo_image_surface_t	*image);
+
+    cairo_surface_t *
+    (*source)			(void                    *abstract_surface,
+				 cairo_rectangle_int_t  *extents);
+
+    cairo_warn cairo_status_t
+    (*acquire_source_image)	(void                    *abstract_surface,
+				 cairo_image_surface_t  **image_out,
+				 void                   **image_extra);
+
+    cairo_warn void
+    (*release_source_image)	(void                   *abstract_surface,
+				 cairo_image_surface_t  *image_out,
+				 void                   *image_extra);
+
+    cairo_surface_t *
+    (*snapshot)			(void			*surface);
+
+    cairo_warn cairo_int_status_t
+    (*copy_page)		(void			*surface);
+
+    cairo_warn cairo_int_status_t
+    (*show_page)		(void			*surface);
+
+    /* Get the extents of the current surface. For many surface types
+     * this will be as simple as { x=0, y=0, width=surface->width,
+     * height=surface->height}.
+     *
+     * If this function is not implemented, or if it returns
+     * FALSE the surface is considered to be
+     * boundless and infinite bounds are used for it.
+     */
+    cairo_bool_t
+    (*get_extents)		(void			 *surface,
+				 cairo_rectangle_int_t   *extents);
+
+    void
+    (*get_font_options)         (void                  *surface,
+				 cairo_font_options_t  *options);
+
+    cairo_warn cairo_status_t
+    (*flush)                    (void                  *surface,
+				 unsigned               flags);
+
+    cairo_warn cairo_status_t
+    (*mark_dirty_rectangle)     (void                  *surface,
+				 int                    x,
+				 int                    y,
+				 int                    width,
+				 int                    height);
+
+    cairo_warn cairo_int_status_t
+    (*paint)			(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_clip_t		*clip);
+
+    cairo_warn cairo_int_status_t
+    (*mask)			(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_pattern_t	*mask,
+				 const cairo_clip_t		*clip);
+
+    cairo_warn cairo_int_status_t
+    (*stroke)			(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 const cairo_stroke_style_t	*style,
+				 const cairo_matrix_t	*ctm,
+				 const cairo_matrix_t	*ctm_inverse,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t		*clip);
+
+    cairo_warn cairo_int_status_t
+    (*fill)			(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 cairo_fill_rule_t	 fill_rule,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t           *clip);
+
+    cairo_warn cairo_int_status_t
+    (*fill_stroke)		(void			*surface,
+				 cairo_operator_t	 fill_op,
+				 const cairo_pattern_t	*fill_source,
+				 cairo_fill_rule_t	 fill_rule,
+				 double			 fill_tolerance,
+				 cairo_antialias_t	 fill_antialias,
+				 const cairo_path_fixed_t*path,
+				 cairo_operator_t	 stroke_op,
+				 const cairo_pattern_t	*stroke_source,
+				 const cairo_stroke_style_t	*stroke_style,
+				 const cairo_matrix_t	*stroke_ctm,
+				 const cairo_matrix_t	*stroke_ctm_inverse,
+				 double			 stroke_tolerance,
+				 cairo_antialias_t	 stroke_antialias,
+				 const cairo_clip_t	*clip);
+
+    cairo_warn cairo_int_status_t
+    (*show_glyphs)		(void			*surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 cairo_glyph_t		*glyphs,
+				 int			 num_glyphs,
+				 cairo_scaled_font_t	*scaled_font,
+				 const cairo_clip_t     *clip);
+
+    cairo_bool_t
+    (*has_show_text_glyphs)	(void			    *surface);
+
+    cairo_warn cairo_int_status_t
+    (*show_text_glyphs)		(void			    *surface,
+				 cairo_operator_t	     op,
+				 const cairo_pattern_t	    *source,
+				 const char		    *utf8,
+				 int			     utf8_len,
+				 cairo_glyph_t		    *glyphs,
+				 int			     num_glyphs,
+				 const cairo_text_cluster_t *clusters,
+				 int			     num_clusters,
+				 cairo_text_cluster_flags_t  cluster_flags,
+				 cairo_scaled_font_t	    *scaled_font,
+				 const cairo_clip_t               *clip);
+
+    const char **
+    (*get_supported_mime_types)	(void			    *surface);
+
+    cairo_warn cairo_int_status_t
+    (*tag)			(void			*surface,
+				 cairo_bool_t            begin,
+				 const char             *tag_name,
+				 const char             *attributes,
+				 const cairo_pattern_t	*source,
+				 const cairo_stroke_style_t	*style,
+				 const cairo_matrix_t	*ctm,
+				 const cairo_matrix_t	*ctm_inverse,
+				 const cairo_clip_t	*clip);
+
+};
+
+cairo_private cairo_status_t
+_cairo_surface_default_acquire_source_image (void                    *surface,
+					     cairo_image_surface_t  **image_out,
+					     void                   **image_extra);
+
+cairo_private void
+_cairo_surface_default_release_source_image (void                   *surface,
+					     cairo_image_surface_t  *image,
+					     void                   *image_extra);
+
+cairo_private cairo_surface_t *
+_cairo_surface_default_source (void *surface,
+			       cairo_rectangle_int_t *extents);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SURFACE_BACKEND_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-clipper-private.h b/libs/cairo-1.16.0/src/cairo-surface-clipper-private.h
new file mode 100644
index 0000000..e5b00af
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-clipper-private.h
@@ -0,0 +1,71 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.u>
+ */
+
+#ifndef CAIRO_SURFACE_CLIPPER_PRIVATE_H
+#define CAIRO_SURFACE_CLIPPER_PRIVATE_H
+
+#include "cairo-types-private.h"
+#include "cairo-clip-private.h"
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_surface_clipper cairo_surface_clipper_t;
+
+typedef cairo_status_t
+(*cairo_surface_clipper_intersect_clip_path_func_t) (cairo_surface_clipper_t *,
+						     cairo_path_fixed_t *,
+						     cairo_fill_rule_t,
+						     double,
+						     cairo_antialias_t);
+struct _cairo_surface_clipper {
+    cairo_clip_t *clip;
+    cairo_surface_clipper_intersect_clip_path_func_t intersect_clip_path;
+};
+
+cairo_private cairo_status_t
+_cairo_surface_clipper_set_clip (cairo_surface_clipper_t *clipper,
+				 const cairo_clip_t *clip);
+
+cairo_private void
+_cairo_surface_clipper_init (cairo_surface_clipper_t *clipper,
+			     cairo_surface_clipper_intersect_clip_path_func_t intersect);
+
+cairo_private void
+_cairo_surface_clipper_reset (cairo_surface_clipper_t *clipper);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SURFACE_CLIPPER_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-clipper.c b/libs/cairo-1.16.0/src/cairo-surface-clipper.c
new file mode 100644
index 0000000..5309362
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-clipper.c
@@ -0,0 +1,196 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-surface-clipper-private.h"
+
+/* A collection of routines to facilitate vector surface clipping */
+
+/* XXX Eliminate repeated paths and nested clips */
+
+static cairo_status_t
+_cairo_path_fixed_add_box (cairo_path_fixed_t *path,
+			   const cairo_box_t *box)
+{
+    cairo_status_t status;
+
+    status = _cairo_path_fixed_move_to (path, box->p1.x, box->p1.y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p2.x, box->p1.y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p2.x, box->p2.y);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_path_fixed_line_to (path, box->p1.x, box->p2.y);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_path_fixed_close_path (path);
+}
+
+static cairo_status_t
+_cairo_surface_clipper_intersect_clip_boxes (cairo_surface_clipper_t *clipper,
+					     const cairo_clip_t *clip)
+{
+    cairo_path_fixed_t path;
+    cairo_status_t status;
+    int i;
+
+    if (clip->num_boxes == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Reconstruct the path for the clip boxes.
+     * XXX maybe a new clipper callback?
+     */
+
+    _cairo_path_fixed_init (&path);
+    for (i = 0; i < clip->num_boxes; i++) {
+	status = _cairo_path_fixed_add_box (&path, &clip->boxes[i]);
+	if (unlikely (status)) {
+	    _cairo_path_fixed_fini (&path);
+	    return status;
+	}
+    }
+
+    status = clipper->intersect_clip_path (clipper, &path,
+					   CAIRO_FILL_RULE_WINDING,
+					   0.,
+					   CAIRO_ANTIALIAS_DEFAULT);
+    _cairo_path_fixed_fini (&path);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_surface_clipper_intersect_clip_path_recursive (cairo_surface_clipper_t *clipper,
+						      cairo_clip_path_t *clip_path,
+						      cairo_clip_path_t *end)
+{
+    cairo_status_t status;
+
+    if (clip_path->prev != end) {
+	status =
+	    _cairo_surface_clipper_intersect_clip_path_recursive (clipper,
+								  clip_path->prev,
+								  end);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return clipper->intersect_clip_path (clipper,
+					 &clip_path->path,
+					 clip_path->fill_rule,
+					 clip_path->tolerance,
+					 clip_path->antialias);
+}
+
+cairo_status_t
+_cairo_surface_clipper_set_clip (cairo_surface_clipper_t *clipper,
+				 const cairo_clip_t *clip)
+{
+    cairo_status_t status;
+    cairo_bool_t incremental = FALSE;
+
+    if (_cairo_clip_equal (clip, clipper->clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* all clipped out state should never propagate this far */
+    assert (!_cairo_clip_is_all_clipped (clip));
+
+    /* XXX Is this an incremental clip? */
+    if (clipper->clip && clip &&
+	clip->num_boxes == clipper->clip->num_boxes &&
+	memcmp (clip->boxes, clipper->clip->boxes,
+		sizeof (cairo_box_t) * clip->num_boxes) == 0)
+    {
+	cairo_clip_path_t *clip_path = clip->path;
+	while (clip_path != NULL && clip_path != clipper->clip->path)
+	    clip_path = clip_path->prev;
+
+	if (clip_path) {
+	    incremental = TRUE;
+	    status = _cairo_surface_clipper_intersect_clip_path_recursive (clipper,
+									   clip->path,
+									   clipper->clip->path);
+	}
+    }
+
+    _cairo_clip_destroy (clipper->clip);
+    clipper->clip = _cairo_clip_copy (clip);
+
+    if (incremental)
+	return status;
+
+    status = clipper->intersect_clip_path (clipper, NULL, 0, 0, 0);
+    if (unlikely (status))
+	return status;
+
+    if (clip == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_clipper_intersect_clip_boxes (clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    if (clip->path != NULL) {
+	    status = _cairo_surface_clipper_intersect_clip_path_recursive (clipper,
+									   clip->path,
+									   NULL);
+    }
+
+    return status;
+}
+
+void
+_cairo_surface_clipper_init (cairo_surface_clipper_t *clipper,
+			     cairo_surface_clipper_intersect_clip_path_func_t func)
+{
+    clipper->clip = NULL;
+    clipper->intersect_clip_path = func;
+}
+
+void
+_cairo_surface_clipper_reset (cairo_surface_clipper_t *clipper)
+{
+    _cairo_clip_destroy (clipper->clip);
+    clipper->clip = NULL;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-fallback-private.h b/libs/cairo-1.16.0/src/cairo-surface-fallback-private.h
new file mode 100644
index 0000000..ecf7b0e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-fallback-private.h
@@ -0,0 +1,95 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_FALLBACK_PRIVATE_H
+#define CAIRO_SURFACE_FALLBACK_PRIVATE_H
+
+#include "cairoint.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private cairo_int_status_t
+_cairo_surface_fallback_paint (void			*abstract_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip);
+
+cairo_private cairo_int_status_t
+_cairo_surface_fallback_mask (void			*abstract_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip);
+
+cairo_private cairo_int_status_t
+_cairo_surface_fallback_stroke (void			*abstract_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t	*source,
+				const cairo_path_fixed_t	*path,
+				const cairo_stroke_style_t*style,
+				const cairo_matrix_t	*ctm,
+				const cairo_matrix_t	*ctm_inverse,
+				double			 tolerance,
+				cairo_antialias_t	 antialias,
+				const cairo_clip_t	*clip);
+
+cairo_private cairo_int_status_t
+_cairo_surface_fallback_fill (void			*abstract_surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     const cairo_path_fixed_t	*path,
+			     cairo_fill_rule_t		 fill_rule,
+			     double			 tolerance,
+			     cairo_antialias_t		 antialias,
+			     const cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+_cairo_surface_fallback_glyphs (void			*abstract_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t	*source,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t	*clip);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SURFACE_FALLBACK_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-fallback.c b/libs/cairo-1.16.0/src/cairo-surface-fallback.c
new file mode 100644
index 0000000..a0af159
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-fallback.c
@@ -0,0 +1,115 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-surface-fallback-private.h"
+
+cairo_int_status_t
+_cairo_surface_fallback_paint (void			*surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_paint (&_cairo_fallback_compositor,
+				    surface, op, source, clip);
+}
+
+cairo_int_status_t
+_cairo_surface_fallback_mask (void			*surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_mask (&_cairo_fallback_compositor,
+				   surface, op, source, mask, clip);
+}
+
+cairo_int_status_t
+_cairo_surface_fallback_stroke (void			*surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				const cairo_path_fixed_t*path,
+				const cairo_stroke_style_t*style,
+				const cairo_matrix_t	*ctm,
+				const cairo_matrix_t	*ctm_inverse,
+				double			 tolerance,
+				cairo_antialias_t	 antialias,
+				const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_stroke (&_cairo_fallback_compositor,
+				     surface, op, source, path,
+				     style, ctm,ctm_inverse,
+				     tolerance, antialias, clip);
+}
+
+cairo_int_status_t
+_cairo_surface_fallback_fill (void			*surface,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     const cairo_path_fixed_t	*path,
+			     cairo_fill_rule_t		 fill_rule,
+			     double			 tolerance,
+			     cairo_antialias_t		 antialias,
+			     const cairo_clip_t		*clip)
+{
+    return _cairo_compositor_fill (&_cairo_fallback_compositor,
+				   surface, op, source, path,
+				   fill_rule, tolerance, antialias,
+				   clip);
+}
+
+cairo_int_status_t
+_cairo_surface_fallback_glyphs (void			*surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t	*clip)
+{
+    return _cairo_compositor_glyphs (&_cairo_fallback_compositor,
+				     surface, op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-inline.h b/libs/cairo-1.16.0/src/cairo-surface-inline.h
new file mode 100644
index 0000000..85fbc91
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-inline.h
@@ -0,0 +1,60 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_SURFACE_INLINE_H
+#define CAIRO_SURFACE_INLINE_H
+
+#include "cairo-surface-private.h"
+
+static inline cairo_status_t
+__cairo_surface_flush (cairo_surface_t *surface, unsigned flags)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    if (surface->backend->flush)
+	status = surface->backend->flush (surface, flags);
+    return status;
+}
+
+static inline cairo_surface_t *
+_cairo_surface_reference (cairo_surface_t *surface)
+{
+    if (!CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	_cairo_reference_count_inc (&surface->ref_count);
+    return surface;
+}
+
+#endif /* CAIRO_SURFACE_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-observer-inline.h b/libs/cairo-1.16.0/src/cairo-surface-observer-inline.h
new file mode 100644
index 0000000..07b9477
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-observer-inline.h
@@ -0,0 +1,59 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_OBSERVER_INLINE_H
+#define CAIRO_SURFACE_OBSERVER_INLINE_H
+
+#include "cairo-surface-observer-private.h"
+
+static inline cairo_surface_t *
+_cairo_surface_observer_get_target (cairo_surface_t *surface)
+{
+    return ((cairo_surface_observer_t *) surface)->target;
+}
+
+static inline cairo_bool_t
+_cairo_surface_is_observer (cairo_surface_t *surface)
+{
+    return surface->backend->type == (cairo_surface_type_t)CAIRO_INTERNAL_SURFACE_TYPE_OBSERVER;
+}
+
+static inline cairo_bool_t
+_cairo_device_is_observer (cairo_device_t *device)
+{
+    return device->backend->type == (cairo_device_type_t)CAIRO_INTERNAL_DEVICE_TYPE_OBSERVER;
+}
+
+#endif /* CAIRO_SURFACE_OBSERVER_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-observer-private.h b/libs/cairo-1.16.0/src/cairo-surface-observer-private.h
new file mode 100644
index 0000000..6ed0c18
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-observer-private.h
@@ -0,0 +1,208 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_OBSERVER_PRIVATE_H
+#define CAIRO_SURFACE_OBSERVER_PRIVATE_H
+
+#include "cairoint.h"
+
+#include "cairo-device-private.h"
+#include "cairo-list-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-time-private.h"
+
+struct stat {
+    double min, max, sum, sum_sq;
+    unsigned count;
+};
+
+#define NUM_OPERATORS (CAIRO_OPERATOR_HSL_LUMINOSITY+1)
+#define NUM_CAPS (CAIRO_LINE_CAP_SQUARE+1)
+#define NUM_JOINS (CAIRO_LINE_JOIN_BEVEL+1)
+#define NUM_ANTIALIAS (CAIRO_ANTIALIAS_BEST+1)
+#define NUM_FILL_RULE (CAIRO_FILL_RULE_EVEN_ODD+1)
+
+struct extents {
+    struct stat area;
+    unsigned int bounded, unbounded;
+};
+
+struct pattern {
+    unsigned int type[8]; /* native/record/other surface/gradients */
+};
+
+struct path {
+    unsigned int type[5]; /* empty/pixel/rectilinear/straight/curved */
+};
+
+struct clip {
+    unsigned int type[6]; /* none, region, boxes, single path, polygon, general */
+};
+
+typedef struct _cairo_observation cairo_observation_t;
+typedef struct _cairo_observation_record cairo_observation_record_t;
+typedef struct _cairo_device_observer cairo_device_observer_t;
+
+struct _cairo_observation_record {
+    cairo_content_t target_content;
+    int target_width;
+    int target_height;
+
+    int index;
+    cairo_operator_t op;
+    int source;
+    int mask;
+    int num_glyphs;
+    int path;
+    int fill_rule;
+    double tolerance;
+    int antialias;
+    int clip;
+    cairo_time_t elapsed;
+};
+
+struct _cairo_observation {
+    int num_surfaces;
+    int num_contexts;
+    int num_sources_acquired;
+
+    /* XXX put interesting stats here! */
+
+    struct paint {
+	cairo_time_t elapsed;
+	unsigned int count;
+	struct extents extents;
+	unsigned int operators[NUM_OPERATORS];
+	struct pattern source;
+	struct clip clip;
+	unsigned int noop;
+
+	cairo_observation_record_t slowest;
+    } paint;
+
+    struct mask {
+	cairo_time_t elapsed;
+	unsigned int count;
+	struct extents extents;
+	unsigned int operators[NUM_OPERATORS];
+	struct pattern source;
+	struct pattern mask;
+	struct clip clip;
+	unsigned int noop;
+
+	cairo_observation_record_t slowest;
+    } mask;
+
+    struct fill {
+	cairo_time_t elapsed;
+	unsigned int count;
+	struct extents extents;
+	unsigned int operators[NUM_OPERATORS];
+	struct pattern source;
+	struct path path;
+	unsigned int antialias[NUM_ANTIALIAS];
+	unsigned int fill_rule[NUM_FILL_RULE];
+	struct clip clip;
+	unsigned int noop;
+
+	cairo_observation_record_t slowest;
+    } fill;
+
+    struct stroke {
+	cairo_time_t elapsed;
+	unsigned int count;
+	struct extents extents;
+	unsigned int operators[NUM_OPERATORS];
+	unsigned int caps[NUM_CAPS];
+	unsigned int joins[NUM_CAPS];
+	unsigned int antialias[NUM_ANTIALIAS];
+	struct pattern source;
+	struct path path;
+	struct stat line_width;
+	struct clip clip;
+	unsigned int noop;
+
+	cairo_observation_record_t slowest;
+    } stroke;
+
+    struct glyphs {
+	cairo_time_t elapsed;
+	unsigned int count;
+	struct extents extents;
+	unsigned int operators[NUM_OPERATORS];
+	struct pattern source;
+	struct clip clip;
+	unsigned int noop;
+
+	cairo_observation_record_t slowest;
+    } glyphs;
+
+    cairo_array_t timings;
+    cairo_recording_surface_t *record;
+};
+
+struct _cairo_device_observer {
+    cairo_device_t base;
+    cairo_device_t *target;
+
+    cairo_observation_t log;
+};
+
+struct callback_list {
+    cairo_list_t link;
+
+    cairo_surface_observer_callback_t func;
+    void *data;
+};
+
+struct _cairo_surface_observer {
+    cairo_surface_t base;
+    cairo_surface_t *target;
+
+    cairo_observation_t log;
+
+    cairo_list_t paint_callbacks;
+    cairo_list_t mask_callbacks;
+    cairo_list_t fill_callbacks;
+    cairo_list_t stroke_callbacks;
+    cairo_list_t glyphs_callbacks;
+
+    cairo_list_t flush_callbacks;
+    cairo_list_t finish_callbacks;
+};
+
+#endif /* CAIRO_SURFACE_OBSERVER_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-observer.c b/libs/cairo-1.16.0/src/cairo-surface-observer.c
new file mode 100644
index 0000000..9c4432e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-observer.c
@@ -0,0 +1,2105 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-surface-observer-private.h"
+#include "cairo-surface-observer-inline.h"
+
+#include "cairo-array-private.h"
+#include "cairo-combsort-inline.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-pattern-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-subsurface-inline.h"
+#include "cairo-reference-count-private.h"
+
+#if CAIRO_HAS_SCRIPT_SURFACE
+#include "cairo-script-private.h"
+#endif
+
+static const cairo_surface_backend_t _cairo_surface_observer_backend;
+
+/* observation/stats */
+
+static void init_stats (struct stat *s)
+{
+    s->min = HUGE_VAL;
+    s->max = -HUGE_VAL;
+}
+
+static void init_extents (struct extents *e)
+{
+    init_stats (&e->area);
+}
+
+static void init_pattern (struct pattern *p)
+{
+}
+
+static void init_path (struct path *p)
+{
+}
+
+static void init_clip (struct clip *c)
+{
+}
+
+static void init_paint (struct paint *p)
+{
+    init_extents (&p->extents);
+    init_pattern (&p->source);
+    init_clip (&p->clip);
+}
+
+static void init_mask (struct mask *m)
+{
+    init_extents (&m->extents);
+    init_pattern (&m->source);
+    init_pattern (&m->mask);
+    init_clip (&m->clip);
+}
+
+static void init_fill (struct fill *f)
+{
+    init_extents (&f->extents);
+    init_pattern (&f->source);
+    init_path (&f->path);
+    init_clip (&f->clip);
+}
+
+static void init_stroke (struct stroke *s)
+{
+    init_extents (&s->extents);
+    init_pattern (&s->source);
+    init_path (&s->path);
+    init_clip (&s->clip);
+}
+
+static void init_glyphs (struct glyphs *g)
+{
+    init_extents (&g->extents);
+    init_pattern (&g->source);
+    init_clip (&g->clip);
+}
+
+static cairo_status_t
+log_init (cairo_observation_t *log,
+	  cairo_bool_t record)
+{
+    memset (log, 0, sizeof(*log));
+
+    init_paint (&log->paint);
+    init_mask (&log->mask);
+    init_fill (&log->fill);
+    init_stroke (&log->stroke);
+    init_glyphs (&log->glyphs);
+
+    _cairo_array_init (&log->timings, sizeof (cairo_observation_record_t));
+
+    if (record) {
+	log->record = (cairo_recording_surface_t *)
+	    cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
+	if (unlikely (log->record->base.status))
+	    return log->record->base.status;
+
+	log->record->optimize_clears = FALSE;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+log_fini (cairo_observation_t *log)
+{
+    _cairo_array_fini (&log->timings);
+    cairo_surface_destroy (&log->record->base);
+}
+
+static cairo_surface_t*
+get_pattern_surface (const cairo_pattern_t *pattern)
+{
+    return ((cairo_surface_pattern_t *)pattern)->surface;
+}
+
+static int
+classify_pattern (const cairo_pattern_t *pattern,
+		  const cairo_surface_t *target)
+{
+    int classify;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	if (get_pattern_surface (pattern)->type == target->type)
+	    classify = 0;
+	else if (get_pattern_surface (pattern)->type == CAIRO_SURFACE_TYPE_RECORDING)
+	    classify = 1;
+	else
+	    classify = 2;
+	break;
+    default:
+    case CAIRO_PATTERN_TYPE_SOLID:
+	classify = 3;
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	classify = 4;
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	classify = 5;
+	break;
+    case CAIRO_PATTERN_TYPE_MESH:
+	classify = 6;
+	break;
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	classify = 7;
+	break;
+    }
+    return classify;
+}
+
+static void
+add_pattern (struct pattern *stats,
+	     const cairo_pattern_t *pattern,
+	     const cairo_surface_t *target)
+{
+    stats->type[classify_pattern(pattern, target)]++;
+}
+
+static int
+classify_path (const cairo_path_fixed_t *path,
+	       cairo_bool_t is_fill)
+{
+    int classify;
+
+    /* XXX improve for stroke */
+    classify = -1;
+    if (is_fill) {
+	if (path->fill_is_empty)
+	    classify = 0;
+	else if (_cairo_path_fixed_fill_is_rectilinear (path))
+	    classify = path->fill_maybe_region ? 1 : 2;
+    } else {
+	if (_cairo_path_fixed_stroke_is_rectilinear (path))
+	    classify = 2;
+    }
+    if (classify == -1)
+	classify = 3 + (path->has_curve_to != 0);
+
+    return classify;
+}
+
+static void
+add_path (struct path *stats,
+	  const cairo_path_fixed_t *path,
+	  cairo_bool_t is_fill)
+{
+    stats->type[classify_path(path, is_fill)]++;
+}
+
+static int
+classify_clip (const cairo_clip_t *clip)
+{
+    int classify;
+
+    if (clip == NULL)
+	classify = 0;
+    else if (_cairo_clip_is_region (clip))
+	classify = 1;
+    else if (clip->path == NULL)
+	classify = 2;
+    else if (clip->path->prev == NULL)
+	classify = 3;
+    else if (_cairo_clip_is_polygon (clip))
+	classify = 4;
+    else
+	classify = 5;
+
+    return classify;
+}
+
+static void
+add_clip (struct clip *stats,
+	  const cairo_clip_t *clip)
+{
+    stats->type[classify_clip (clip)]++;
+}
+
+static void
+stats_add (struct stat *s, double v)
+{
+    if (v < s->min)
+	s->min = v;
+    if (v > s->max)
+	s->max = v;
+    s->sum += v;
+    s->sum_sq += v*v;
+    s->count++;
+}
+
+static void
+add_extents (struct extents *stats,
+	     const cairo_composite_rectangles_t *extents)
+{
+    const cairo_rectangle_int_t *r = extents->is_bounded ? &extents->bounded :&extents->unbounded;
+    stats_add (&stats->area, r->width * r->height);
+    stats->bounded += extents->is_bounded != 0;
+    stats->unbounded += extents->is_bounded == 0;
+}
+
+/* device interface */
+
+static void
+_cairo_device_observer_lock (void *_device)
+{
+    cairo_device_observer_t *device = (cairo_device_observer_t *) _device;
+    cairo_status_t ignored;
+
+    /* cairo_device_acquire() can fail for nil and finished
+     * devices. We don't care about observing them. */
+    ignored = cairo_device_acquire (device->target);
+}
+
+static void
+_cairo_device_observer_unlock (void *_device)
+{
+    cairo_device_observer_t *device = (cairo_device_observer_t *) _device;
+    cairo_device_release (device->target);
+}
+
+static cairo_status_t
+_cairo_device_observer_flush (void *_device)
+{
+    cairo_device_observer_t *device = (cairo_device_observer_t *) _device;
+
+    if (device->target == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    cairo_device_flush (device->target);
+    return device->target->status;
+}
+
+static void
+_cairo_device_observer_finish (void *_device)
+{
+    cairo_device_observer_t *device = (cairo_device_observer_t *) _device;
+    log_fini (&device->log);
+    cairo_device_finish (device->target);
+}
+
+static void
+_cairo_device_observer_destroy (void *_device)
+{
+    cairo_device_observer_t *device = (cairo_device_observer_t *) _device;
+    cairo_device_destroy (device->target);
+    free (device);
+}
+
+static const cairo_device_backend_t _cairo_device_observer_backend = {
+    CAIRO_INTERNAL_DEVICE_TYPE_OBSERVER,
+
+    _cairo_device_observer_lock,
+    _cairo_device_observer_unlock,
+
+    _cairo_device_observer_flush,
+    _cairo_device_observer_finish,
+    _cairo_device_observer_destroy,
+};
+
+static cairo_device_t *
+_cairo_device_create_observer_internal (cairo_device_t *target,
+					cairo_bool_t record)
+{
+    cairo_device_observer_t *device;
+    cairo_status_t status;
+
+    device = _cairo_malloc (sizeof (cairo_device_observer_t));
+    if (unlikely (device == NULL))
+	return _cairo_device_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_device_init (&device->base, &_cairo_device_observer_backend);
+    status = log_init (&device->log, record);
+    if (unlikely (status)) {
+	free (device);
+	return _cairo_device_create_in_error (status);
+    }
+
+    device->target = cairo_device_reference (target);
+
+    return &device->base;
+}
+
+/* surface interface */
+
+static cairo_device_observer_t *
+to_device (cairo_surface_observer_t *suface)
+{
+    return (cairo_device_observer_t *)suface->base.device;
+}
+
+static cairo_surface_t *
+_cairo_surface_create_observer_internal (cairo_device_t *device,
+					 cairo_surface_t *target)
+{
+    cairo_surface_observer_t *surface;
+    cairo_status_t status;
+
+    surface = _cairo_malloc (sizeof (cairo_surface_observer_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_surface_observer_backend, device,
+			 target->content,
+			 target->is_vector);
+
+    status = log_init (&surface->log,
+		       ((cairo_device_observer_t *)device)->log.record != NULL);
+    if (unlikely (status)) {
+	free (surface);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    surface->target = cairo_surface_reference (target);
+    surface->base.type = surface->target->type;
+    surface->base.is_clear = surface->target->is_clear;
+
+    cairo_list_init (&surface->paint_callbacks);
+    cairo_list_init (&surface->mask_callbacks);
+    cairo_list_init (&surface->fill_callbacks);
+    cairo_list_init (&surface->stroke_callbacks);
+    cairo_list_init (&surface->glyphs_callbacks);
+
+    cairo_list_init (&surface->flush_callbacks);
+    cairo_list_init (&surface->finish_callbacks);
+
+    surface->log.num_surfaces++;
+    to_device (surface)->log.num_surfaces++;
+
+    return &surface->base;
+}
+
+static inline void
+do_callbacks (cairo_surface_observer_t *surface, cairo_list_t *head)
+{
+    struct callback_list *cb;
+
+    cairo_list_foreach_entry (cb, struct callback_list, head, link)
+	cb->func (&surface->base, surface->target, cb->data);
+}
+
+
+static cairo_status_t
+_cairo_surface_observer_finish (void *abstract_surface)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+
+    do_callbacks (surface, &surface->finish_callbacks);
+
+    cairo_surface_destroy (surface->target);
+    log_fini (&surface->log);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_surface_observer_create_similar (void *abstract_other,
+					cairo_content_t content,
+					int width, int height)
+{
+    cairo_surface_observer_t *other = abstract_other;
+    cairo_surface_t *target, *surface;
+
+    target = NULL;
+    if (other->target->backend->create_similar)
+	target = other->target->backend->create_similar (other->target, content,
+							 width, height);
+    if (target == NULL)
+	target = _cairo_image_surface_create_with_content (content,
+							   width, height);
+
+    surface = _cairo_surface_create_observer_internal (other->base.device,
+						       target);
+    cairo_surface_destroy (target);
+
+    return surface;
+}
+
+static cairo_surface_t *
+_cairo_surface_observer_create_similar_image (void *other,
+					      cairo_format_t format,
+					      int width, int height)
+{
+    cairo_surface_observer_t *surface = other;
+
+    if (surface->target->backend->create_similar_image)
+	return surface->target->backend->create_similar_image (surface->target,
+							       format,
+							       width, height);
+
+    return NULL;
+}
+
+static cairo_image_surface_t *
+_cairo_surface_observer_map_to_image (void *abstract_surface,
+				      const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    return _cairo_surface_map_to_image (surface->target, extents);
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_unmap_image (void *abstract_surface,
+				     cairo_image_surface_t *image)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    return _cairo_surface_unmap_image (surface->target, image);
+}
+
+static void
+record_target (cairo_observation_record_t *r,
+	       cairo_surface_t *target)
+{
+    cairo_rectangle_int_t extents;
+
+    r->target_content = target->content;
+    if (_cairo_surface_get_extents (target, &extents)) {
+	r->target_width = extents.width;
+	r->target_height = extents.height;
+    } else {
+	r->target_width = -1;
+	r->target_height = -1;
+    }
+}
+
+static cairo_observation_record_t *
+record_paint (cairo_observation_record_t *r,
+	      cairo_surface_t *target,
+	      cairo_operator_t op,
+	      const cairo_pattern_t *source,
+	      const cairo_clip_t *clip,
+	      cairo_time_t elapsed)
+{
+    record_target (r, target);
+
+    r->op = op;
+    r->source = classify_pattern (source, target);
+    r->mask = -1;
+    r->num_glyphs = -1;
+    r->path = -1;
+    r->fill_rule = -1;
+    r->tolerance = -1;
+    r->antialias = -1;
+    r->clip = classify_clip (clip);
+    r->elapsed = elapsed;
+
+    return r;
+}
+
+static cairo_observation_record_t *
+record_mask (cairo_observation_record_t *r,
+	     cairo_surface_t *target,
+	     cairo_operator_t op,
+	     const cairo_pattern_t *source,
+	     const cairo_pattern_t *mask,
+	     const cairo_clip_t *clip,
+	     cairo_time_t elapsed)
+{
+    record_target (r, target);
+
+    r->op = op;
+    r->source = classify_pattern (source, target);
+    r->mask = classify_pattern (mask, target);
+    r->num_glyphs = -1;
+    r->path = -1;
+    r->fill_rule = -1;
+    r->tolerance = -1;
+    r->antialias = -1;
+    r->clip = classify_clip (clip);
+    r->elapsed = elapsed;
+
+    return r;
+}
+
+static cairo_observation_record_t *
+record_fill (cairo_observation_record_t *r,
+	     cairo_surface_t		*target,
+	     cairo_operator_t		op,
+	     const cairo_pattern_t	*source,
+	     const cairo_path_fixed_t	*path,
+	     cairo_fill_rule_t		 fill_rule,
+	     double			 tolerance,
+	     cairo_antialias_t		 antialias,
+	     const cairo_clip_t		*clip,
+	     cairo_time_t elapsed)
+{
+    record_target (r, target);
+
+    r->op = op;
+    r->source = classify_pattern (source, target);
+    r->mask = -1;
+    r->num_glyphs = -1;
+    r->path = classify_path (path, TRUE);
+    r->fill_rule = fill_rule;
+    r->tolerance = tolerance;
+    r->antialias = antialias;
+    r->clip = classify_clip (clip);
+    r->elapsed = elapsed;
+
+    return r;
+}
+
+static cairo_observation_record_t *
+record_stroke (cairo_observation_record_t *r,
+	       cairo_surface_t		*target,
+	       cairo_operator_t		op,
+	       const cairo_pattern_t	*source,
+	       const cairo_path_fixed_t	*path,
+	       const cairo_stroke_style_t	*style,
+	       const cairo_matrix_t	*ctm,
+	       const cairo_matrix_t	*ctm_inverse,
+	       double			 tolerance,
+	       cairo_antialias_t	 antialias,
+	       const cairo_clip_t	*clip,
+	       cairo_time_t		 elapsed)
+{
+    record_target (r, target);
+
+    r->op = op;
+    r->source = classify_pattern (source, target);
+    r->mask = -1;
+    r->num_glyphs = -1;
+    r->path = classify_path (path, FALSE);
+    r->fill_rule = -1;
+    r->tolerance = tolerance;
+    r->antialias = antialias;
+    r->clip = classify_clip (clip);
+    r->elapsed = elapsed;
+
+    return r;
+}
+
+static cairo_observation_record_t *
+record_glyphs (cairo_observation_record_t *r,
+	       cairo_surface_t		*target,
+	       cairo_operator_t		op,
+	       const cairo_pattern_t	*source,
+	       cairo_glyph_t		*glyphs,
+	       int			 num_glyphs,
+	       cairo_scaled_font_t	*scaled_font,
+	       const cairo_clip_t	*clip,
+	       cairo_time_t		 elapsed)
+{
+    record_target (r, target);
+
+    r->op = op;
+    r->source = classify_pattern (source, target);
+    r->mask = -1;
+    r->path = -1;
+    r->num_glyphs = num_glyphs;
+    r->fill_rule = -1;
+    r->tolerance = -1;
+    r->antialias = -1;
+    r->clip = classify_clip (clip);
+    r->elapsed = elapsed;
+
+    return r;
+}
+
+static void
+add_record (cairo_observation_t *log,
+	    cairo_observation_record_t *r)
+{
+    cairo_int_status_t status;
+
+    r->index = log->record ? log->record->commands.num_elements : 0;
+
+    status = _cairo_array_append (&log->timings, r);
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+}
+
+static void
+_cairo_surface_sync (cairo_surface_t *target, int x, int y)
+{
+    cairo_rectangle_int_t extents;
+
+    extents.x = x;
+    extents.y = y;
+    extents.width  = 1;
+    extents.height = 1;
+
+    _cairo_surface_unmap_image (target,
+				_cairo_surface_map_to_image (target,
+							     &extents));
+}
+
+static void
+midpt (const cairo_composite_rectangles_t *extents, int *x, int *y)
+{
+    *x = extents->bounded.x + extents->bounded.width / 2;
+    *y = extents->bounded.y + extents->bounded.height / 2;
+}
+
+static void
+add_record_paint (cairo_observation_t *log,
+		 cairo_surface_t *target,
+		 cairo_operator_t op,
+		 const cairo_pattern_t *source,
+		 const cairo_clip_t *clip,
+		 cairo_time_t elapsed)
+{
+    cairo_observation_record_t record;
+    cairo_int_status_t status;
+
+    add_record (log,
+		record_paint (&record, target, op, source, clip, elapsed));
+
+    /* We have to bypass the high-level surface layer in case it tries to be
+     * too smart and discard operations; we need to record exactly what just
+     * happened on the target.
+     */
+    if (log->record) {
+	status = log->record->base.backend->paint (&log->record->base,
+						   op, source, clip);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    if (_cairo_time_gt (elapsed, log->paint.slowest.elapsed))
+	log->paint.slowest = record;
+    log->paint.elapsed = _cairo_time_add (log->paint.elapsed, elapsed);
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_paint (void *abstract_surface,
+			       cairo_operator_t op,
+			       const cairo_pattern_t *source,
+			       const cairo_clip_t *clip)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_device_observer_t *device = to_device (surface);
+    cairo_composite_rectangles_t composite;
+    cairo_int_status_t status;
+    cairo_time_t t;
+    int x, y;
+
+    /* XXX device locking */
+
+    surface->log.paint.count++;
+    surface->log.paint.operators[op]++;
+    add_pattern (&surface->log.paint.source, source, surface->target);
+    add_clip (&surface->log.paint.clip, clip);
+
+    device->log.paint.count++;
+    device->log.paint.operators[op]++;
+    add_pattern (&device->log.paint.source, source, surface->target);
+    add_clip (&device->log.paint.clip, clip);
+
+    status = _cairo_composite_rectangles_init_for_paint (&composite,
+							 surface->target,
+							 op, source,
+							 clip);
+    if (unlikely (status)) {
+	surface->log.paint.noop++;
+	device->log.paint.noop++;
+	return status;
+    }
+
+    midpt (&composite, &x, &y);
+
+    add_extents (&surface->log.paint.extents, &composite);
+    add_extents (&device->log.paint.extents, &composite);
+    _cairo_composite_rectangles_fini (&composite);
+
+    t = _cairo_time_get ();
+    status = _cairo_surface_paint (surface->target,
+				   op, source,
+				   clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_sync (surface->target, x, y);
+    t = _cairo_time_get_delta (t);
+
+    add_record_paint (&surface->log, surface->target, op, source, clip, t);
+    add_record_paint (&device->log, surface->target, op, source, clip, t);
+
+    do_callbacks (surface, &surface->paint_callbacks);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+add_record_mask (cairo_observation_t *log,
+		 cairo_surface_t *target,
+		 cairo_operator_t op,
+		 const cairo_pattern_t *source,
+		 const cairo_pattern_t *mask,
+		 const cairo_clip_t *clip,
+		 cairo_time_t elapsed)
+{
+    cairo_observation_record_t record;
+    cairo_int_status_t status;
+
+    add_record (log,
+		record_mask (&record, target, op, source, mask, clip, elapsed));
+
+    if (log->record) {
+	status = log->record->base.backend->mask (&log->record->base,
+						  op, source, mask, clip);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    if (_cairo_time_gt (elapsed, log->mask.slowest.elapsed))
+	log->mask.slowest = record;
+    log->mask.elapsed = _cairo_time_add (log->mask.elapsed, elapsed);
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_mask (void *abstract_surface,
+			      cairo_operator_t op,
+			      const cairo_pattern_t *source,
+			      const cairo_pattern_t *mask,
+			      const cairo_clip_t *clip)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_device_observer_t *device = to_device (surface);
+    cairo_composite_rectangles_t composite;
+    cairo_int_status_t status;
+    cairo_time_t t;
+    int x, y;
+
+    surface->log.mask.count++;
+    surface->log.mask.operators[op]++;
+    add_pattern (&surface->log.mask.source, source, surface->target);
+    add_pattern (&surface->log.mask.mask, mask, surface->target);
+    add_clip (&surface->log.mask.clip, clip);
+
+    device->log.mask.count++;
+    device->log.mask.operators[op]++;
+    add_pattern (&device->log.mask.source, source, surface->target);
+    add_pattern (&device->log.mask.mask, mask, surface->target);
+    add_clip (&device->log.mask.clip, clip);
+
+    status = _cairo_composite_rectangles_init_for_mask (&composite,
+							surface->target,
+							op, source, mask,
+							clip);
+    if (unlikely (status)) {
+	surface->log.mask.noop++;
+	device->log.mask.noop++;
+	return status;
+    }
+
+    midpt (&composite, &x, &y);
+
+    add_extents (&surface->log.mask.extents, &composite);
+    add_extents (&device->log.mask.extents, &composite);
+    _cairo_composite_rectangles_fini (&composite);
+
+    t = _cairo_time_get ();
+    status =  _cairo_surface_mask (surface->target,
+				   op, source, mask,
+				   clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_sync (surface->target, x, y);
+    t = _cairo_time_get_delta (t);
+
+    add_record_mask (&surface->log,
+		     surface->target, op, source, mask, clip,
+		     t);
+    add_record_mask (&device->log,
+		     surface->target, op, source, mask, clip,
+		     t);
+
+    do_callbacks (surface, &surface->mask_callbacks);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+add_record_fill (cairo_observation_t *log,
+		 cairo_surface_t *target,
+		 cairo_operator_t		op,
+		 const cairo_pattern_t		*source,
+		 const cairo_path_fixed_t	*path,
+		 cairo_fill_rule_t		 fill_rule,
+		 double				 tolerance,
+		 cairo_antialias_t		 antialias,
+		 const cairo_clip_t		 *clip,
+		 cairo_time_t elapsed)
+{
+    cairo_observation_record_t record;
+    cairo_int_status_t status;
+
+    add_record (log,
+		record_fill (&record,
+			     target, op, source,
+			     path, fill_rule, tolerance, antialias,
+			     clip, elapsed));
+
+    if (log->record) {
+	status = log->record->base.backend->fill (&log->record->base,
+						  op, source,
+						  path, fill_rule,
+						  tolerance, antialias,
+						  clip);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    if (_cairo_time_gt (elapsed, log->fill.slowest.elapsed))
+	log->fill.slowest = record;
+    log->fill.elapsed = _cairo_time_add (log->fill.elapsed, elapsed);
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_fill (void			*abstract_surface,
+			      cairo_operator_t		op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		antialias,
+			      const cairo_clip_t	*clip)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_device_observer_t *device = to_device (surface);
+    cairo_composite_rectangles_t composite;
+    cairo_int_status_t status;
+    cairo_time_t t;
+    int x, y;
+
+    surface->log.fill.count++;
+    surface->log.fill.operators[op]++;
+    surface->log.fill.fill_rule[fill_rule]++;
+    surface->log.fill.antialias[antialias]++;
+    add_pattern (&surface->log.fill.source, source, surface->target);
+    add_path (&surface->log.fill.path, path, TRUE);
+    add_clip (&surface->log.fill.clip, clip);
+
+    device->log.fill.count++;
+    device->log.fill.operators[op]++;
+    device->log.fill.fill_rule[fill_rule]++;
+    device->log.fill.antialias[antialias]++;
+    add_pattern (&device->log.fill.source, source, surface->target);
+    add_path (&device->log.fill.path, path, TRUE);
+    add_clip (&device->log.fill.clip, clip);
+
+    status = _cairo_composite_rectangles_init_for_fill (&composite,
+							surface->target,
+							op, source, path,
+							clip);
+    if (unlikely (status)) {
+	surface->log.fill.noop++;
+	device->log.fill.noop++;
+	return status;
+    }
+
+    midpt (&composite, &x, &y);
+
+    add_extents (&surface->log.fill.extents, &composite);
+    add_extents (&device->log.fill.extents, &composite);
+    _cairo_composite_rectangles_fini (&composite);
+
+    t = _cairo_time_get ();
+    status = _cairo_surface_fill (surface->target,
+				  op, source, path,
+				  fill_rule, tolerance, antialias,
+				  clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_sync (surface->target, x, y);
+    t = _cairo_time_get_delta (t);
+
+    add_record_fill (&surface->log,
+		     surface->target, op, source, path,
+		     fill_rule, tolerance, antialias,
+		     clip, t);
+
+    add_record_fill (&device->log,
+		     surface->target, op, source, path,
+		     fill_rule, tolerance, antialias,
+		     clip, t);
+
+    do_callbacks (surface, &surface->fill_callbacks);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+add_record_stroke (cairo_observation_t *log,
+		 cairo_surface_t *target,
+		 cairo_operator_t		 op,
+		 const cairo_pattern_t		*source,
+		 const cairo_path_fixed_t	*path,
+		 const cairo_stroke_style_t	*style,
+		 const cairo_matrix_t		*ctm,
+		 const cairo_matrix_t		*ctm_inverse,
+		 double				 tolerance,
+		 cairo_antialias_t		 antialias,
+		 const cairo_clip_t		*clip,
+		 cairo_time_t elapsed)
+{
+    cairo_observation_record_t record;
+    cairo_int_status_t status;
+
+    add_record (log,
+		record_stroke (&record,
+			       target, op, source,
+			       path, style, ctm,ctm_inverse,
+			       tolerance, antialias,
+			       clip, elapsed));
+
+    if (log->record) {
+	status = log->record->base.backend->stroke (&log->record->base,
+						    op, source,
+						    path, style, ctm,ctm_inverse,
+						    tolerance, antialias,
+						    clip);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    if (_cairo_time_gt (elapsed, log->stroke.slowest.elapsed))
+	log->stroke.slowest = record;
+    log->stroke.elapsed = _cairo_time_add (log->stroke.elapsed, elapsed);
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_stroke (void				*abstract_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t		*source,
+				const cairo_path_fixed_t	*path,
+				const cairo_stroke_style_t	*style,
+				const cairo_matrix_t		*ctm,
+				const cairo_matrix_t		*ctm_inverse,
+				double				 tolerance,
+				cairo_antialias_t		 antialias,
+				const cairo_clip_t		*clip)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_device_observer_t *device = to_device (surface);
+    cairo_composite_rectangles_t composite;
+    cairo_int_status_t status;
+    cairo_time_t t;
+    int x, y;
+
+    surface->log.stroke.count++;
+    surface->log.stroke.operators[op]++;
+    surface->log.stroke.antialias[antialias]++;
+    surface->log.stroke.caps[style->line_cap]++;
+    surface->log.stroke.joins[style->line_join]++;
+    add_pattern (&surface->log.stroke.source, source, surface->target);
+    add_path (&surface->log.stroke.path, path, FALSE);
+    add_clip (&surface->log.stroke.clip, clip);
+
+    device->log.stroke.count++;
+    device->log.stroke.operators[op]++;
+    device->log.stroke.antialias[antialias]++;
+    device->log.stroke.caps[style->line_cap]++;
+    device->log.stroke.joins[style->line_join]++;
+    add_pattern (&device->log.stroke.source, source, surface->target);
+    add_path (&device->log.stroke.path, path, FALSE);
+    add_clip (&device->log.stroke.clip, clip);
+
+    status = _cairo_composite_rectangles_init_for_stroke (&composite,
+							  surface->target,
+							  op, source,
+							  path, style, ctm,
+							  clip);
+    if (unlikely (status)) {
+	surface->log.stroke.noop++;
+	device->log.stroke.noop++;
+	return status;
+    }
+
+    midpt (&composite, &x, &y);
+
+    add_extents (&surface->log.stroke.extents, &composite);
+    add_extents (&device->log.stroke.extents, &composite);
+    _cairo_composite_rectangles_fini (&composite);
+
+    t = _cairo_time_get ();
+    status = _cairo_surface_stroke (surface->target,
+				  op, source, path,
+				  style, ctm, ctm_inverse,
+				  tolerance, antialias,
+				  clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_sync (surface->target, x, y);
+    t = _cairo_time_get_delta (t);
+
+    add_record_stroke (&surface->log,
+		       surface->target, op, source, path,
+		       style, ctm,ctm_inverse,
+		       tolerance, antialias,
+		       clip, t);
+
+    add_record_stroke (&device->log,
+		       surface->target, op, source, path,
+		       style, ctm,ctm_inverse,
+		       tolerance, antialias,
+		       clip, t);
+
+    do_callbacks (surface, &surface->stroke_callbacks);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+add_record_glyphs (cairo_observation_t	*log,
+		   cairo_surface_t	*target,
+		   cairo_operator_t	 op,
+		   const cairo_pattern_t*source,
+		   cairo_glyph_t	*glyphs,
+		   int			 num_glyphs,
+		   cairo_scaled_font_t	*scaled_font,
+		   const cairo_clip_t	*clip,
+		   cairo_time_t elapsed)
+{
+    cairo_observation_record_t record;
+    cairo_int_status_t status;
+
+    add_record (log,
+		record_glyphs (&record,
+			       target, op, source,
+			       glyphs, num_glyphs, scaled_font,
+			       clip, elapsed));
+
+    if (log->record) {
+	status = log->record->base.backend->show_text_glyphs (&log->record->base,
+							      op, source,
+							      NULL, 0,
+							      glyphs, num_glyphs,
+							      NULL, 0, 0,
+							      scaled_font,
+							      clip);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    if (_cairo_time_gt (elapsed, log->glyphs.slowest.elapsed))
+	log->glyphs.slowest = record;
+    log->glyphs.elapsed = _cairo_time_add (log->glyphs.elapsed, elapsed);
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_glyphs (void			*abstract_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t		*clip)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_device_observer_t *device = to_device (surface);
+    cairo_composite_rectangles_t composite;
+    cairo_int_status_t status;
+    cairo_glyph_t *dev_glyphs;
+    cairo_time_t t;
+    int x, y;
+
+    surface->log.glyphs.count++;
+    surface->log.glyphs.operators[op]++;
+    add_pattern (&surface->log.glyphs.source, source, surface->target);
+    add_clip (&surface->log.glyphs.clip, clip);
+
+    device->log.glyphs.count++;
+    device->log.glyphs.operators[op]++;
+    add_pattern (&device->log.glyphs.source, source, surface->target);
+    add_clip (&device->log.glyphs.clip, clip);
+
+    status = _cairo_composite_rectangles_init_for_glyphs (&composite,
+							  surface->target,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip,
+							  NULL);
+    if (unlikely (status)) {
+	surface->log.glyphs.noop++;
+	device->log.glyphs.noop++;
+	return status;
+    }
+
+    midpt (&composite, &x, &y);
+
+    add_extents (&surface->log.glyphs.extents, &composite);
+    add_extents (&device->log.glyphs.extents, &composite);
+    _cairo_composite_rectangles_fini (&composite);
+
+    /* XXX We have to copy the glyphs, because the backend is allowed to
+     * modify! */
+    dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+    if (unlikely (dev_glyphs == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    memcpy (dev_glyphs, glyphs, num_glyphs * sizeof (cairo_glyph_t));
+
+    t = _cairo_time_get ();
+    status = _cairo_surface_show_text_glyphs (surface->target, op, source,
+					      NULL, 0,
+					      dev_glyphs, num_glyphs,
+					      NULL, 0, 0,
+					      scaled_font,
+					      clip);
+    free (dev_glyphs);
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_sync (surface->target, x, y);
+    t = _cairo_time_get_delta (t);
+
+    add_record_glyphs (&surface->log,
+		       surface->target, op, source,
+		       glyphs, num_glyphs, scaled_font,
+		       clip, t);
+
+    add_record_glyphs (&device->log,
+		       surface->target, op, source,
+		       glyphs, num_glyphs, scaled_font,
+		       clip, t);
+
+    do_callbacks (surface, &surface->glyphs_callbacks);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_surface_observer_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+
+    do_callbacks (surface, &surface->flush_callbacks);
+    return _cairo_surface_flush (surface->target, flags);
+}
+
+static cairo_status_t
+_cairo_surface_observer_mark_dirty (void *abstract_surface,
+				      int x, int y,
+				      int width, int height)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (surface->target->backend->mark_dirty_rectangle)
+	status = surface->target->backend->mark_dirty_rectangle (surface->target,
+						       x,y, width,height);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_copy_page (void *abstract_surface)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (surface->target->backend->copy_page)
+	status = surface->target->backend->copy_page (surface->target);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_observer_show_page (void *abstract_surface)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (surface->target->backend->show_page)
+	status = surface->target->backend->show_page (surface->target);
+
+    return status;
+}
+
+static cairo_bool_t
+_cairo_surface_observer_get_extents (void *abstract_surface,
+				     cairo_rectangle_int_t *extents)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    return _cairo_surface_get_extents (surface->target, extents);
+}
+
+static void
+_cairo_surface_observer_get_font_options (void *abstract_surface,
+					  cairo_font_options_t *options)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+
+    if (surface->target->backend->get_font_options != NULL)
+	surface->target->backend->get_font_options (surface->target, options);
+}
+
+static cairo_surface_t *
+_cairo_surface_observer_source (void                    *abstract_surface,
+				cairo_rectangle_int_t	*extents)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+    return _cairo_surface_get_source (surface->target, extents);
+}
+
+static cairo_status_t
+_cairo_surface_observer_acquire_source_image (void                    *abstract_surface,
+						cairo_image_surface_t  **image_out,
+						void                   **image_extra)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+
+    surface->log.num_sources_acquired++;
+    to_device (surface)->log.num_sources_acquired++;
+
+    return _cairo_surface_acquire_source_image (surface->target,
+						image_out, image_extra);
+}
+
+static void
+_cairo_surface_observer_release_source_image (void                   *abstract_surface,
+						cairo_image_surface_t  *image,
+						void                   *image_extra)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+
+    _cairo_surface_release_source_image (surface->target, image, image_extra);
+}
+
+static cairo_surface_t *
+_cairo_surface_observer_snapshot (void *abstract_surface)
+{
+    cairo_surface_observer_t *surface = abstract_surface;
+
+    /* XXX hook onto the snapshot so that we measure number of reads */
+
+    if (surface->target->backend->snapshot)
+	return surface->target->backend->snapshot (surface->target);
+
+    return NULL;
+}
+
+static cairo_t *
+_cairo_surface_observer_create_context(void *target)
+{
+    cairo_surface_observer_t *surface = target;
+
+    if (_cairo_surface_is_subsurface (&surface->base))
+	surface = (cairo_surface_observer_t *)
+	    _cairo_surface_subsurface_get_target (&surface->base);
+
+    surface->log.num_contexts++;
+    to_device (surface)->log.num_contexts++;
+
+    return surface->target->backend->create_context (target);
+}
+
+static const cairo_surface_backend_t _cairo_surface_observer_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_OBSERVER,
+    _cairo_surface_observer_finish,
+
+    _cairo_surface_observer_create_context,
+
+    _cairo_surface_observer_create_similar,
+    _cairo_surface_observer_create_similar_image,
+    _cairo_surface_observer_map_to_image,
+    _cairo_surface_observer_unmap_image,
+
+    _cairo_surface_observer_source,
+    _cairo_surface_observer_acquire_source_image,
+    _cairo_surface_observer_release_source_image,
+    _cairo_surface_observer_snapshot,
+
+    _cairo_surface_observer_copy_page,
+    _cairo_surface_observer_show_page,
+
+    _cairo_surface_observer_get_extents,
+    _cairo_surface_observer_get_font_options,
+
+    _cairo_surface_observer_flush,
+    _cairo_surface_observer_mark_dirty,
+
+    _cairo_surface_observer_paint,
+    _cairo_surface_observer_mask,
+    _cairo_surface_observer_stroke,
+    _cairo_surface_observer_fill,
+    NULL, /* fill-stroke */
+    _cairo_surface_observer_glyphs,
+};
+
+/**
+ * cairo_surface_create_observer:
+ * @target: an existing surface for which the observer will watch
+ * @mode: sets the mode of operation (normal vs. record)
+ *
+ * Create a new surface that exists solely to watch another is doing. In
+ * the process it will log operations and times, which are fast, which are
+ * slow, which are frequent, etc.
+ *
+ * The @mode parameter can be set to either CAIRO_SURFACE_OBSERVER_NORMAL
+ * or CAIRO_SURFACE_OBSERVER_RECORD_OPERATIONS, to control whether or not
+ * the internal observer should record operations.
+ *
+ * Return value: a pointer to the newly allocated surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if @other is already in an error state
+ * or any other error occurs.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_surface_create_observer (cairo_surface_t *target,
+			       cairo_surface_observer_mode_t mode)
+{
+    cairo_device_t *device;
+    cairo_surface_t *surface;
+    cairo_bool_t record;
+
+    if (unlikely (target->status))
+	return _cairo_surface_create_in_error (target->status);
+    if (unlikely (target->finished))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    record = mode & CAIRO_SURFACE_OBSERVER_RECORD_OPERATIONS;
+    device = _cairo_device_create_observer_internal (target->device, record);
+    if (unlikely (device->status))
+	return _cairo_surface_create_in_error (device->status);
+
+    surface = _cairo_surface_create_observer_internal (device, target);
+    cairo_device_destroy (device);
+
+    return surface;
+}
+
+static cairo_status_t
+_cairo_surface_observer_add_callback (cairo_list_t *head,
+				      cairo_surface_observer_callback_t func,
+				      void *data)
+{
+    struct callback_list *cb;
+
+    cb = _cairo_malloc (sizeof (*cb));
+    if (unlikely (cb == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cairo_list_add (&cb->link, head);
+    cb->func = func;
+    cb->data = data;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+cairo_surface_observer_add_paint_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->paint_callbacks,
+						 func, data);
+}
+
+cairo_status_t
+cairo_surface_observer_add_mask_callback (cairo_surface_t *abstract_surface,
+					  cairo_surface_observer_callback_t func,
+					  void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->mask_callbacks,
+						 func, data);
+}
+
+cairo_status_t
+cairo_surface_observer_add_fill_callback (cairo_surface_t *abstract_surface,
+					  cairo_surface_observer_callback_t func,
+					  void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->fill_callbacks,
+						 func, data);
+}
+
+cairo_status_t
+cairo_surface_observer_add_stroke_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->stroke_callbacks,
+						 func, data);
+}
+
+cairo_status_t
+cairo_surface_observer_add_glyphs_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->glyphs_callbacks,
+						 func, data);
+}
+
+cairo_status_t
+cairo_surface_observer_add_flush_callback (cairo_surface_t *abstract_surface,
+					   cairo_surface_observer_callback_t func,
+					   void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->flush_callbacks,
+						 func, data);
+}
+
+cairo_status_t
+cairo_surface_observer_add_finish_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return abstract_surface->status;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *)abstract_surface;
+    return _cairo_surface_observer_add_callback (&surface->finish_callbacks,
+						 func, data);
+}
+
+static void
+print_extents (cairo_output_stream_t *stream, const struct extents *e)
+{
+    _cairo_output_stream_printf (stream,
+				 "  extents: total %g, avg %g [unbounded %d]\n",
+				 e->area.sum,
+				 e->area.sum / e->area.count,
+				 e->unbounded);
+}
+
+static inline int ordercmp (int a, int b, const unsigned int *array)
+{
+    /* high to low */
+    return array[b] - array[a];
+}
+CAIRO_COMBSORT_DECLARE_WITH_DATA (sort_order, int, ordercmp)
+
+static void
+print_array (cairo_output_stream_t *stream,
+	     const unsigned int *array,
+	     const char **names,
+	     int count)
+{
+    int order[64];
+    int i, j;
+
+    assert (count < ARRAY_LENGTH (order));
+    for (i = j = 0; i < count; i++) {
+	if (array[i] != 0)
+	    order[j++] = i;
+    }
+
+    sort_order (order, j, (void *)array);
+    for (i = 0; i < j; i++)
+	_cairo_output_stream_printf (stream, " %d %s%s",
+				     array[order[i]], names[order[i]],
+				     i < j -1 ? "," : "");
+}
+
+static const char *operator_names[] = {
+    "CLEAR",	/* CAIRO_OPERATOR_CLEAR */
+
+    "SOURCE",	/* CAIRO_OPERATOR_SOURCE */
+    "OVER",		/* CAIRO_OPERATOR_OVER */
+    "IN",		/* CAIRO_OPERATOR_IN */
+    "OUT",		/* CAIRO_OPERATOR_OUT */
+    "ATOP",		/* CAIRO_OPERATOR_ATOP */
+
+    "DEST",		/* CAIRO_OPERATOR_DEST */
+    "DEST_OVER",	/* CAIRO_OPERATOR_DEST_OVER */
+    "DEST_IN",	/* CAIRO_OPERATOR_DEST_IN */
+    "DEST_OUT",	/* CAIRO_OPERATOR_DEST_OUT */
+    "DEST_ATOP",	/* CAIRO_OPERATOR_DEST_ATOP */
+
+    "XOR",		/* CAIRO_OPERATOR_XOR */
+    "ADD",		/* CAIRO_OPERATOR_ADD */
+    "SATURATE",	/* CAIRO_OPERATOR_SATURATE */
+
+    "MULTIPLY",	/* CAIRO_OPERATOR_MULTIPLY */
+    "SCREEN",	/* CAIRO_OPERATOR_SCREEN */
+    "OVERLAY",	/* CAIRO_OPERATOR_OVERLAY */
+    "DARKEN",	/* CAIRO_OPERATOR_DARKEN */
+    "LIGHTEN",	/* CAIRO_OPERATOR_LIGHTEN */
+    "DODGE",	/* CAIRO_OPERATOR_COLOR_DODGE */
+    "BURN",		/* CAIRO_OPERATOR_COLOR_BURN */
+    "HARD_LIGHT",	/* CAIRO_OPERATOR_HARD_LIGHT */
+    "SOFT_LIGHT",	/* CAIRO_OPERATOR_SOFT_LIGHT */
+    "DIFFERENCE",	/* CAIRO_OPERATOR_DIFFERENCE */
+    "EXCLUSION",	/* CAIRO_OPERATOR_EXCLUSION */
+    "HSL_HUE",	/* CAIRO_OPERATOR_HSL_HUE */
+    "HSL_SATURATION", /* CAIRO_OPERATOR_HSL_SATURATION */
+    "HSL_COLOR",	/* CAIRO_OPERATOR_HSL_COLOR */
+    "HSL_LUMINOSITY" /* CAIRO_OPERATOR_HSL_LUMINOSITY */
+};
+static void
+print_operators (cairo_output_stream_t *stream, unsigned int *array)
+{
+    _cairo_output_stream_printf (stream, "  op:");
+    print_array (stream, array, operator_names, NUM_OPERATORS);
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *fill_rule_names[] = {
+    "non-zero",
+    "even-odd",
+};
+static void
+print_fill_rule (cairo_output_stream_t *stream, unsigned int *array)
+{
+    _cairo_output_stream_printf (stream, "  fill rule:");
+    print_array (stream, array, fill_rule_names, ARRAY_LENGTH(fill_rule_names));
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *cap_names[] = {
+    "butt",		/* CAIRO_LINE_CAP_BUTT */
+    "round",	/* CAIRO_LINE_CAP_ROUND */
+    "square"	/* CAIRO_LINE_CAP_SQUARE */
+};
+static void
+print_line_caps (cairo_output_stream_t *stream, unsigned int *array)
+{
+    _cairo_output_stream_printf (stream, "  caps:");
+    print_array (stream, array, cap_names, NUM_CAPS);
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *join_names[] = {
+    "miter",	/* CAIRO_LINE_JOIN_MITER */
+    "round",	/* CAIRO_LINE_JOIN_ROUND */
+    "bevel",	/* CAIRO_LINE_JOIN_BEVEL */
+};
+static void
+print_line_joins (cairo_output_stream_t *stream, unsigned int *array)
+{
+    _cairo_output_stream_printf (stream, "  joins:");
+    print_array (stream, array, join_names, NUM_JOINS);
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *antialias_names[] = {
+    "default",
+    "none",
+    "gray",
+    "subpixel",
+    "fast",
+    "good",
+    "best"
+};
+static void
+print_antialias (cairo_output_stream_t *stream, unsigned int *array)
+{
+    _cairo_output_stream_printf (stream, "  antialias:");
+    print_array (stream, array, antialias_names, NUM_ANTIALIAS);
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *pattern_names[] = {
+    "native",
+    "record",
+    "other surface",
+    "solid",
+    "linear",
+    "radial",
+    "mesh",
+    "raster"
+};
+static void
+print_pattern (cairo_output_stream_t *stream,
+	       const char *name,
+	       const struct pattern *p)
+{
+    _cairo_output_stream_printf (stream, "  %s:", name);
+    print_array (stream, p->type, pattern_names, ARRAY_LENGTH (pattern_names));
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *path_names[] = {
+    "empty",
+    "pixel-aligned",
+    "rectliinear",
+    "straight",
+    "curved",
+};
+static void
+print_path (cairo_output_stream_t *stream,
+	    const struct path *p)
+{
+    _cairo_output_stream_printf (stream, "  path:");
+    print_array (stream, p->type, path_names, ARRAY_LENGTH (path_names));
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static const char *clip_names[] = {
+    "none",
+    "region",
+    "boxes",
+    "single path",
+    "polygon",
+    "general",
+};
+static void
+print_clip (cairo_output_stream_t *stream, const struct clip *c)
+{
+    _cairo_output_stream_printf (stream, "  clip:");
+    print_array (stream, c->type, clip_names, ARRAY_LENGTH (clip_names));
+    _cairo_output_stream_printf (stream, "\n");
+}
+
+static void
+print_record (cairo_output_stream_t *stream,
+	      cairo_observation_record_t *r)
+{
+    _cairo_output_stream_printf (stream, "  op: %s\n", operator_names[r->op]);
+    _cairo_output_stream_printf (stream, "  source: %s\n",
+				 pattern_names[r->source]);
+    if (r->mask != -1)
+	_cairo_output_stream_printf (stream, "  mask: %s\n",
+				     pattern_names[r->mask]);
+    if (r->num_glyphs != -1)
+	_cairo_output_stream_printf (stream, "  num_glyphs: %d\n",
+				     r->num_glyphs);
+    if (r->path != -1)
+	_cairo_output_stream_printf (stream, "  path: %s\n",
+				    path_names[r->path]);
+    if (r->fill_rule != -1)
+	_cairo_output_stream_printf (stream, "  fill rule: %s\n",
+				     fill_rule_names[r->fill_rule]);
+    if (r->antialias != -1)
+	_cairo_output_stream_printf (stream, "  antialias: %s\n",
+				     antialias_names[r->antialias]);
+    _cairo_output_stream_printf (stream, "  clip: %s\n", clip_names[r->clip]);
+    _cairo_output_stream_printf (stream, "  elapsed: %f ns\n",
+				 _cairo_time_to_ns (r->elapsed));
+}
+
+static double percent (cairo_time_t a, cairo_time_t b)
+{
+    /* Fake %.1f */
+    return _cairo_round (_cairo_time_to_s (a) * 1000 /
+			 _cairo_time_to_s (b)) / 10;
+}
+
+static cairo_bool_t
+replay_record (cairo_observation_t *log,
+	       cairo_observation_record_t *r,
+	       cairo_device_t *script)
+{
+#if CAIRO_HAS_SCRIPT_SURFACE
+    cairo_surface_t *surface;
+    cairo_int_status_t status;
+
+    if (log->record == NULL || script == NULL)
+	return FALSE;
+
+    surface = cairo_script_surface_create (script,
+					   r->target_content,
+					   r->target_width,
+					   r->target_height);
+    status =
+	_cairo_recording_surface_replay_one (log->record, r->index, surface);
+    cairo_surface_destroy (surface);
+
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    return TRUE;
+#else
+    return FALSE;
+#endif
+}
+
+static cairo_time_t
+_cairo_observation_total_elapsed (cairo_observation_t *log)
+{
+    cairo_time_t total;
+
+    total = log->paint.elapsed;
+    total = _cairo_time_add (total, log->mask.elapsed);
+    total = _cairo_time_add (total, log->fill.elapsed);
+    total = _cairo_time_add (total, log->stroke.elapsed);
+    total = _cairo_time_add (total, log->glyphs.elapsed);
+
+    return total;
+}
+
+static void
+_cairo_observation_print (cairo_output_stream_t *stream,
+			  cairo_observation_t *log)
+{
+    cairo_device_t *script;
+    cairo_time_t total;
+
+#if CAIRO_HAS_SCRIPT_SURFACE
+    script = _cairo_script_context_create_internal (stream);
+    _cairo_script_context_attach_snapshots (script, FALSE);
+#else
+    script = NULL;
+#endif
+
+    total = _cairo_observation_total_elapsed (log);
+
+    _cairo_output_stream_printf (stream, "elapsed: %f\n",
+				 _cairo_time_to_ns (total));
+    _cairo_output_stream_printf (stream, "surfaces: %d\n",
+				 log->num_surfaces);
+    _cairo_output_stream_printf (stream, "contexts: %d\n",
+				 log->num_contexts);
+    _cairo_output_stream_printf (stream, "sources acquired: %d\n",
+				 log->num_sources_acquired);
+
+
+    _cairo_output_stream_printf (stream, "paint: count %d [no-op %d], elapsed %f [%f%%]\n",
+				 log->paint.count, log->paint.noop,
+				 _cairo_time_to_ns (log->paint.elapsed),
+				 percent (log->paint.elapsed, total));
+    if (log->paint.count) {
+	print_extents (stream, &log->paint.extents);
+	print_operators (stream, log->paint.operators);
+	print_pattern (stream, "source", &log->paint.source);
+	print_clip (stream, &log->paint.clip);
+
+	_cairo_output_stream_printf (stream, "slowest paint: %f%%\n",
+				     percent (log->paint.slowest.elapsed,
+					      log->paint.elapsed));
+	print_record (stream, &log->paint.slowest);
+
+	_cairo_output_stream_printf (stream, "\n");
+	if (replay_record (log, &log->paint.slowest, script))
+	    _cairo_output_stream_printf (stream, "\n\n");
+    }
+
+    _cairo_output_stream_printf (stream, "mask: count %d [no-op %d], elapsed %f [%f%%]\n",
+				 log->mask.count, log->mask.noop,
+				 _cairo_time_to_ns (log->mask.elapsed),
+				 percent (log->mask.elapsed, total));
+    if (log->mask.count) {
+	print_extents (stream, &log->mask.extents);
+	print_operators (stream, log->mask.operators);
+	print_pattern (stream, "source", &log->mask.source);
+	print_pattern (stream, "mask", &log->mask.mask);
+	print_clip (stream, &log->mask.clip);
+
+	_cairo_output_stream_printf (stream, "slowest mask: %f%%\n",
+				     percent (log->mask.slowest.elapsed,
+					      log->mask.elapsed));
+	print_record (stream, &log->mask.slowest);
+
+	_cairo_output_stream_printf (stream, "\n");
+	if (replay_record (log, &log->mask.slowest, script))
+	    _cairo_output_stream_printf (stream, "\n\n");
+    }
+
+    _cairo_output_stream_printf (stream, "fill: count %d [no-op %d], elaspsed %f [%f%%]\n",
+				 log->fill.count, log->fill.noop,
+				 _cairo_time_to_ns (log->fill.elapsed),
+				 percent (log->fill.elapsed, total));
+    if (log->fill.count) {
+	print_extents (stream, &log->fill.extents);
+	print_operators (stream, log->fill.operators);
+	print_pattern (stream, "source", &log->fill.source);
+	print_path (stream, &log->fill.path);
+	print_fill_rule (stream, log->fill.fill_rule);
+	print_antialias (stream, log->fill.antialias);
+	print_clip (stream, &log->fill.clip);
+
+	_cairo_output_stream_printf (stream, "slowest fill: %f%%\n",
+				     percent (log->fill.slowest.elapsed,
+					      log->fill.elapsed));
+	print_record (stream, &log->fill.slowest);
+
+	_cairo_output_stream_printf (stream, "\n");
+	if (replay_record (log, &log->fill.slowest, script))
+	    _cairo_output_stream_printf (stream, "\n\n");
+    }
+
+    _cairo_output_stream_printf (stream, "stroke: count %d [no-op %d], elapsed %f [%f%%]\n",
+				 log->stroke.count, log->stroke.noop,
+				 _cairo_time_to_ns (log->stroke.elapsed),
+				 percent (log->stroke.elapsed, total));
+    if (log->stroke.count) {
+	print_extents (stream, &log->stroke.extents);
+	print_operators (stream, log->stroke.operators);
+	print_pattern (stream, "source", &log->stroke.source);
+	print_path (stream, &log->stroke.path);
+	print_antialias (stream, log->stroke.antialias);
+	print_line_caps (stream, log->stroke.caps);
+	print_line_joins (stream, log->stroke.joins);
+	print_clip (stream, &log->stroke.clip);
+
+	_cairo_output_stream_printf (stream, "slowest stroke: %f%%\n",
+				     percent (log->stroke.slowest.elapsed,
+					      log->stroke.elapsed));
+	print_record (stream, &log->stroke.slowest);
+
+	_cairo_output_stream_printf (stream, "\n");
+	if (replay_record (log, &log->stroke.slowest, script))
+	    _cairo_output_stream_printf (stream, "\n\n");
+    }
+
+    _cairo_output_stream_printf (stream, "glyphs: count %d [no-op %d], elasped %f [%f%%]\n",
+				 log->glyphs.count, log->glyphs.noop,
+				 _cairo_time_to_ns (log->glyphs.elapsed),
+				 percent (log->glyphs.elapsed, total));
+    if (log->glyphs.count) {
+	print_extents (stream, &log->glyphs.extents);
+	print_operators (stream, log->glyphs.operators);
+	print_pattern (stream, "source", &log->glyphs.source);
+	print_clip (stream, &log->glyphs.clip);
+
+	_cairo_output_stream_printf (stream, "slowest glyphs: %f%%\n",
+				     percent (log->glyphs.slowest.elapsed,
+					      log->glyphs.elapsed));
+	print_record (stream, &log->glyphs.slowest);
+
+	_cairo_output_stream_printf (stream, "\n");
+	if (replay_record (log, &log->glyphs.slowest, script))
+	    _cairo_output_stream_printf (stream, "\n\n");
+    }
+
+    cairo_device_destroy (script);
+}
+
+cairo_status_t
+cairo_surface_observer_print (cairo_surface_t *abstract_surface,
+			      cairo_write_func_t write_func,
+			      void *closure)
+{
+    cairo_output_stream_t *stream;
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (abstract_surface->status))
+	return abstract_surface->status;
+
+    if (unlikely (! _cairo_surface_is_observer (abstract_surface)))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    surface = (cairo_surface_observer_t *) abstract_surface;
+
+    stream = _cairo_output_stream_create (write_func, NULL, closure);
+    _cairo_observation_print (stream, &surface->log);
+    return _cairo_output_stream_destroy (stream);
+}
+
+double
+cairo_surface_observer_elapsed (cairo_surface_t *abstract_surface)
+{
+    cairo_surface_observer_t *surface;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
+	return -1;
+
+    if (! _cairo_surface_is_observer (abstract_surface))
+	return -1;
+
+    surface = (cairo_surface_observer_t *) abstract_surface;
+    return _cairo_time_to_ns (_cairo_observation_total_elapsed (&surface->log));
+}
+
+cairo_status_t
+cairo_device_observer_print (cairo_device_t *abstract_device,
+			     cairo_write_func_t write_func,
+			     void *closure)
+{
+    cairo_output_stream_t *stream;
+    cairo_device_observer_t *device;
+
+    if (unlikely (abstract_device->status))
+	return abstract_device->status;
+
+    if (unlikely (! _cairo_device_is_observer (abstract_device)))
+	return _cairo_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+
+    device = (cairo_device_observer_t *) abstract_device;
+
+    stream = _cairo_output_stream_create (write_func, NULL, closure);
+    _cairo_observation_print (stream, &device->log);
+    return _cairo_output_stream_destroy (stream);
+}
+
+double
+cairo_device_observer_elapsed (cairo_device_t *abstract_device)
+{
+    cairo_device_observer_t *device;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
+	return -1;
+
+    if (! _cairo_device_is_observer (abstract_device))
+	return -1;
+
+    device = (cairo_device_observer_t *) abstract_device;
+    return _cairo_time_to_ns (_cairo_observation_total_elapsed (&device->log));
+}
+
+double
+cairo_device_observer_paint_elapsed (cairo_device_t *abstract_device)
+{
+    cairo_device_observer_t *device;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
+	return -1;
+
+    if (! _cairo_device_is_observer (abstract_device))
+	return -1;
+
+    device = (cairo_device_observer_t *) abstract_device;
+    return _cairo_time_to_ns (device->log.paint.elapsed);
+}
+
+double
+cairo_device_observer_mask_elapsed (cairo_device_t *abstract_device)
+{
+    cairo_device_observer_t *device;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
+	return -1;
+
+    if (! _cairo_device_is_observer (abstract_device))
+	return -1;
+
+    device = (cairo_device_observer_t *) abstract_device;
+    return _cairo_time_to_ns (device->log.mask.elapsed);
+}
+
+double
+cairo_device_observer_fill_elapsed (cairo_device_t *abstract_device)
+{
+    cairo_device_observer_t *device;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
+	return -1;
+
+    if (! _cairo_device_is_observer (abstract_device))
+	return -1;
+
+    device = (cairo_device_observer_t *) abstract_device;
+    return _cairo_time_to_ns (device->log.fill.elapsed);
+}
+
+double
+cairo_device_observer_stroke_elapsed (cairo_device_t *abstract_device)
+{
+    cairo_device_observer_t *device;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
+	return -1;
+
+    if (! _cairo_device_is_observer (abstract_device))
+	return -1;
+
+    device = (cairo_device_observer_t *) abstract_device;
+    return _cairo_time_to_ns (device->log.stroke.elapsed);
+}
+
+double
+cairo_device_observer_glyphs_elapsed (cairo_device_t *abstract_device)
+{
+    cairo_device_observer_t *device;
+
+    if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
+	return -1;
+
+    if (! _cairo_device_is_observer (abstract_device))
+	return -1;
+
+    device = (cairo_device_observer_t *) abstract_device;
+    return _cairo_time_to_ns (device->log.glyphs.elapsed);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-offset-private.h b/libs/cairo-1.16.0/src/cairo-surface-offset-private.h
new file mode 100644
index 0000000..310ba56
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-offset-private.h
@@ -0,0 +1,95 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.u>
+ */
+
+#ifndef CAIRO_SURFACE_OFFSET_PRIVATE_H
+#define CAIRO_SURFACE_OFFSET_PRIVATE_H
+
+#include "cairo-types-private.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private cairo_status_t
+_cairo_surface_offset_paint (cairo_surface_t *target,
+			     int x, int y,
+			     cairo_operator_t	 op,
+			     const cairo_pattern_t *source,
+			     const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_mask (cairo_surface_t *target,
+			    int x, int y,
+			    cairo_operator_t	 op,
+			    const cairo_pattern_t *source,
+			    const cairo_pattern_t *mask,
+			    const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_stroke (cairo_surface_t *surface,
+			      int x, int y,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      const cairo_stroke_style_t	*stroke_style,
+			      const cairo_matrix_t		*ctm,
+			      const cairo_matrix_t		*ctm_inverse,
+			      double			 tolerance,
+			      cairo_antialias_t	 antialias,
+			      const cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_fill (cairo_surface_t	*surface,
+			    int x, int y,
+			    cairo_operator_t	 op,
+			    const cairo_pattern_t*source,
+			    const cairo_path_fixed_t	*path,
+			    cairo_fill_rule_t	 fill_rule,
+			    double		 tolerance,
+			    cairo_antialias_t	 antialias,
+			    const cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_offset_glyphs (cairo_surface_t		*surface,
+			      int x, int y,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      cairo_scaled_font_t	*scaled_font,
+			      cairo_glyph_t		*glyphs,
+			      int			 num_glyphs,
+			      const cairo_clip_t		*clip);
+
+#endif /* CAIRO_SURFACE_OFFSET_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-offset.c b/libs/cairo-1.16.0/src/cairo-surface-offset.c
new file mode 100644
index 0000000..98f57f2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-offset.c
@@ -0,0 +1,308 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2007 Adrian Johnson
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-offset-private.h"
+
+/* A collection of routines to facilitate drawing to an alternate surface. */
+
+static void
+_copy_transformed_pattern (cairo_pattern_t *pattern,
+			   const cairo_pattern_t *original,
+			   const cairo_matrix_t  *ctm_inverse)
+{
+    _cairo_pattern_init_static_copy (pattern, original);
+
+    if (! _cairo_matrix_is_identity (ctm_inverse))
+	_cairo_pattern_transform (pattern, ctm_inverse);
+}
+
+cairo_status_t
+_cairo_surface_offset_paint (cairo_surface_t		*target,
+			     int x, int y,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*source,
+			     const cairo_clip_t		*clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+    cairo_pattern_union_t source_copy;
+
+    if (unlikely (target->status))
+	return target->status;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (x | y) {
+	cairo_matrix_t m;
+
+	dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+	cairo_matrix_init_translate (&m, x, y);
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    }
+
+    status = _cairo_surface_paint (target, op, source, dev_clip);
+
+    if (dev_clip != clip)
+	_cairo_clip_destroy (dev_clip);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_mask (cairo_surface_t		*target,
+			    int x, int y,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    const cairo_pattern_t	*mask,
+			    const cairo_clip_t		*clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+    cairo_pattern_union_t source_copy;
+    cairo_pattern_union_t mask_copy;
+
+    if (unlikely (target->status))
+	return target->status;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (x | y) {
+	cairo_matrix_t m;
+
+	dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+	cairo_matrix_init_translate (&m, x, y);
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	_copy_transformed_pattern (&mask_copy.base, mask, &m);
+	source = &source_copy.base;
+	mask = &mask_copy.base;
+    }
+
+    status = _cairo_surface_mask (target, op,
+				  source, mask,
+				  dev_clip);
+
+    if (dev_clip != clip)
+	_cairo_clip_destroy (dev_clip);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_stroke (cairo_surface_t		*surface,
+			      int x, int y,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      const cairo_stroke_style_t*stroke_style,
+			      const cairo_matrix_t	*ctm,
+			      const cairo_matrix_t	*ctm_inverse,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias,
+			      const cairo_clip_t		*clip)
+{
+    cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
+    cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+    cairo_matrix_t dev_ctm = *ctm;
+    cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
+    cairo_pattern_union_t source_copy;
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return surface->status;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (x | y) {
+	cairo_matrix_t m;
+
+	dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+	status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+	if (unlikely (status))
+	    goto FINISH;
+
+	_cairo_path_fixed_translate (&path_copy,
+				     _cairo_fixed_from_int (-x),
+				     _cairo_fixed_from_int (-y));
+	dev_path = &path_copy;
+
+	cairo_matrix_init_translate (&m, -x, -y);
+	cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
+
+	cairo_matrix_init_translate (&m, x, y);
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+	cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
+    }
+
+    status = _cairo_surface_stroke (surface, op, source,
+				    dev_path, stroke_style,
+				    &dev_ctm, &dev_ctm_inverse,
+				    tolerance, antialias,
+				    dev_clip);
+
+FINISH:
+    if (dev_path != path)
+	_cairo_path_fixed_fini (dev_path);
+    if (dev_clip != clip)
+	_cairo_clip_destroy (dev_clip);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_fill (cairo_surface_t	*surface,
+			    int x, int y,
+			    cairo_operator_t	 op,
+			    const cairo_pattern_t*source,
+			    const cairo_path_fixed_t	*path,
+			    cairo_fill_rule_t	 fill_rule,
+			    double		 tolerance,
+			    cairo_antialias_t	 antialias,
+			    const cairo_clip_t	*clip)
+{
+    cairo_status_t status;
+    cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
+    cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+    cairo_pattern_union_t source_copy;
+
+    if (unlikely (surface->status))
+	return surface->status;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (x | y) {
+	cairo_matrix_t m;
+
+	dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+	status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+	if (unlikely (status))
+	    goto FINISH;
+
+	_cairo_path_fixed_translate (&path_copy,
+				     _cairo_fixed_from_int (-x),
+				     _cairo_fixed_from_int (-y));
+	dev_path = &path_copy;
+
+	cairo_matrix_init_translate (&m, x, y);
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    }
+
+    status = _cairo_surface_fill (surface, op, source,
+				  dev_path, fill_rule,
+				  tolerance, antialias,
+				  dev_clip);
+
+FINISH:
+    if (dev_path != path)
+	_cairo_path_fixed_fini (dev_path);
+    if (dev_clip != clip)
+	_cairo_clip_destroy (dev_clip);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_offset_glyphs (cairo_surface_t		*surface,
+			      int x, int y,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      cairo_scaled_font_t	*scaled_font,
+			      cairo_glyph_t		*glyphs,
+			      int			 num_glyphs,
+			      const cairo_clip_t	*clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
+    cairo_pattern_union_t source_copy;
+    cairo_glyph_t *dev_glyphs;
+    int i;
+
+    if (unlikely (surface->status))
+	return surface->status;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+    if (dev_glyphs == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
+
+    if (x | y) {
+	cairo_matrix_t m;
+
+	dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
+
+	cairo_matrix_init_translate (&m, x, y);
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+
+	for (i = 0; i < num_glyphs; i++) {
+	    dev_glyphs[i].x -= x;
+	    dev_glyphs[i].y -= y;
+	}
+    }
+
+    status = _cairo_surface_show_text_glyphs (surface, op, source,
+					      NULL, 0,
+					      dev_glyphs, num_glyphs,
+					      NULL, 0, 0,
+					      scaled_font,
+					      dev_clip);
+
+    if (dev_clip != clip)
+	_cairo_clip_destroy (dev_clip);
+    free (dev_glyphs);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-private.h b/libs/cairo-1.16.0/src/cairo-surface-private.h
new file mode 100644
index 0000000..e4ad5f3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-private.h
@@ -0,0 +1,122 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_SURFACE_PRIVATE_H
+#define CAIRO_SURFACE_PRIVATE_H
+
+#include "cairo.h"
+
+#include "cairo-types-private.h"
+#include "cairo-list-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-surface-backend-private.h"
+
+typedef void (*cairo_surface_func_t) (cairo_surface_t *);
+
+struct _cairo_surface {
+    const cairo_surface_backend_t *backend;
+    cairo_device_t *device;
+
+    /* We allow surfaces to override the backend->type by shoving something
+     * else into surface->type. This is for "wrapper" surfaces that want to
+     * hide their internal type from the user-level API. */
+    cairo_surface_type_t type;
+
+    cairo_content_t content;
+
+    cairo_reference_count_t ref_count;
+    cairo_status_t status;
+    unsigned int unique_id;
+    unsigned int serial;
+    cairo_damage_t *damage;
+
+    unsigned _finishing : 1;
+    unsigned finished : 1;
+    unsigned is_clear : 1;
+    unsigned has_font_options : 1;
+    unsigned owns_device : 1;
+    unsigned is_vector : 1;
+
+    cairo_user_data_array_t user_data;
+    cairo_user_data_array_t mime_data;
+
+    cairo_matrix_t device_transform;
+    cairo_matrix_t device_transform_inverse;
+    cairo_list_t device_transform_observers;
+
+    /* The actual resolution of the device, in dots per inch. */
+    double x_resolution;
+    double y_resolution;
+
+    /* The resolution that should be used when generating image-based
+     * fallback; generally only used by the analysis/paginated
+     * surfaces
+     */
+    double x_fallback_resolution;
+    double y_fallback_resolution;
+
+    /* A "snapshot" surface is immutable. See _cairo_surface_snapshot. */
+    cairo_surface_t *snapshot_of;
+    cairo_surface_func_t snapshot_detach;
+    /* current snapshots of this surface*/
+    cairo_list_t snapshots;
+    /* place upon snapshot list */
+    cairo_list_t snapshot;
+
+    /*
+     * Surface font options, falling back to backend's default options,
+     * and set using _cairo_surface_set_font_options(), and propagated by
+     * cairo_surface_create_similar().
+     */
+    cairo_font_options_t font_options;
+};
+
+cairo_private cairo_surface_t *
+_cairo_surface_create_in_error (cairo_status_t status);
+
+cairo_private cairo_surface_t *
+_cairo_int_surface_create_in_error (cairo_int_status_t status);
+
+cairo_private cairo_surface_t *
+_cairo_surface_get_source (cairo_surface_t *surface,
+			   cairo_rectangle_int_t *extents);
+
+cairo_private cairo_status_t
+_cairo_surface_flush (cairo_surface_t *surface, unsigned flags);
+
+#endif /* CAIRO_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-snapshot-inline.h b/libs/cairo-1.16.0/src/cairo-surface-snapshot-inline.h
new file mode 100644
index 0000000..bf89c77
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-snapshot-inline.h
@@ -0,0 +1,67 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_SNAPSHOT_INLINE_H
+#define CAIRO_SURFACE_SNAPSHOT_INLINE_H
+
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-surface-inline.h"
+
+static inline cairo_bool_t
+_cairo_surface_snapshot_is_reused (cairo_surface_t *surface)
+{
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&surface->ref_count) > 2;
+}
+
+static inline cairo_surface_t *
+_cairo_surface_snapshot_get_target (cairo_surface_t *surface)
+{
+    cairo_surface_snapshot_t *snapshot = (cairo_surface_snapshot_t *) surface;
+    cairo_surface_t *target;
+
+    CAIRO_MUTEX_LOCK (snapshot->mutex);
+    target = _cairo_surface_reference (snapshot->target);
+    CAIRO_MUTEX_UNLOCK (snapshot->mutex);
+
+    return target;
+}
+
+static inline cairo_bool_t
+_cairo_surface_is_snapshot (cairo_surface_t *surface)
+{
+    return surface->backend->type == (cairo_surface_type_t)CAIRO_INTERNAL_SURFACE_TYPE_SNAPSHOT;
+}
+
+#endif /* CAIRO_SURFACE_SNAPSHOT_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-snapshot-private.h b/libs/cairo-1.16.0/src/cairo-surface-snapshot-private.h
new file mode 100644
index 0000000..58bee7b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-snapshot-private.h
@@ -0,0 +1,51 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_SNAPSHOT_PRIVATE_H
+#define CAIRO_SURFACE_SNAPSHOT_PRIVATE_H
+
+#include "cairo-mutex-private.h"
+#include "cairo-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+struct _cairo_surface_snapshot {
+    cairo_surface_t base;
+
+    cairo_mutex_t mutex;
+    cairo_surface_t *target;
+    cairo_surface_t *clone;
+};
+
+#endif /* CAIRO_SURFACE_SNAPSHOT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-snapshot.c b/libs/cairo-1.16.0/src/cairo-surface-snapshot.c
new file mode 100644
index 0000000..a8b8c0e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-snapshot.c
@@ -0,0 +1,293 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-snapshot-inline.h"
+
+static cairo_status_t
+_cairo_surface_snapshot_finish (void *abstract_surface)
+{
+    cairo_surface_snapshot_t *surface = abstract_surface;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (surface->clone != NULL) {
+	cairo_surface_finish (surface->clone);
+	status = surface->clone->status;
+
+	cairo_surface_destroy (surface->clone);
+    }
+
+    CAIRO_MUTEX_FINI (surface->mutex);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_surface_snapshot_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_surface_snapshot_t *surface = abstract_surface;
+    cairo_surface_t *target;
+    cairo_status_t status;
+
+    target = _cairo_surface_snapshot_get_target (&surface->base);
+    status = _cairo_surface_flush (target, flags);
+    cairo_surface_destroy (target);
+
+    return status;
+}
+
+static cairo_surface_t *
+_cairo_surface_snapshot_source (void                    *abstract_surface,
+				cairo_rectangle_int_t *extents)
+{
+    cairo_surface_snapshot_t *surface = abstract_surface;
+    return _cairo_surface_get_source (surface->target, extents); /* XXX racy */
+}
+
+struct snapshot_extra {
+    cairo_surface_t *target;
+    void *extra;
+};
+
+static cairo_status_t
+_cairo_surface_snapshot_acquire_source_image (void                    *abstract_surface,
+					      cairo_image_surface_t  **image_out,
+					      void                   **extra_out)
+{
+    cairo_surface_snapshot_t *surface = abstract_surface;
+    struct snapshot_extra *extra;
+    cairo_status_t status;
+
+    extra = _cairo_malloc (sizeof (*extra));
+    if (unlikely (extra == NULL)) {
+	*extra_out = NULL;
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    extra->target = _cairo_surface_snapshot_get_target (&surface->base);
+    status =  _cairo_surface_acquire_source_image (extra->target, image_out, &extra->extra);
+    if (unlikely (status)) {
+	cairo_surface_destroy (extra->target);
+	free (extra);
+	extra = NULL;
+    }
+
+    *extra_out = extra;
+    return status;
+}
+
+static void
+_cairo_surface_snapshot_release_source_image (void                   *abstract_surface,
+					      cairo_image_surface_t  *image,
+					      void                   *_extra)
+{
+    struct snapshot_extra *extra = _extra;
+
+    _cairo_surface_release_source_image (extra->target, image, extra->extra);
+    cairo_surface_destroy (extra->target);
+    free (extra);
+}
+
+static cairo_bool_t
+_cairo_surface_snapshot_get_extents (void                  *abstract_surface,
+				     cairo_rectangle_int_t *extents)
+{
+    cairo_surface_snapshot_t *surface = abstract_surface;
+    cairo_surface_t *target;
+    cairo_bool_t bounded;
+
+    target = _cairo_surface_snapshot_get_target (&surface->base);
+    bounded = _cairo_surface_get_extents (target, extents);
+    cairo_surface_destroy (target);
+
+    return bounded;
+}
+
+static const cairo_surface_backend_t _cairo_surface_snapshot_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_SNAPSHOT,
+    _cairo_surface_snapshot_finish,
+    NULL,
+
+    NULL, /* create similar */
+    NULL, /* create similar image  */
+    NULL, /* map to image */
+    NULL, /* unmap image  */
+
+    _cairo_surface_snapshot_source,
+    _cairo_surface_snapshot_acquire_source_image,
+    _cairo_surface_snapshot_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_surface_snapshot_get_extents,
+    NULL, /* get-font-options */
+
+    _cairo_surface_snapshot_flush,
+};
+
+static void
+_cairo_surface_snapshot_copy_on_write (cairo_surface_t *surface)
+{
+    cairo_surface_snapshot_t *snapshot = (cairo_surface_snapshot_t *) surface;
+    cairo_image_surface_t *image;
+    cairo_surface_t *clone;
+    void *extra;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s: target=%d\n",
+	    __FUNCTION__, snapshot->target->unique_id));
+
+    /* We need to make an image copy of the original surface since the
+     * snapshot may exceed the lifetime of the original device, i.e.
+     * when we later need to use the snapshot the data may have already
+     * been lost.
+     */
+
+    CAIRO_MUTEX_LOCK (snapshot->mutex);
+
+    if (snapshot->target->backend->snapshot != NULL) {
+	clone = snapshot->target->backend->snapshot (snapshot->target);
+	if (clone != NULL) {
+	    assert (clone->status || ! _cairo_surface_is_snapshot (clone));
+	    goto done;
+	}
+    }
+
+    /* XXX copy to a similar surface, leave acquisition till later?
+     * We should probably leave such decisions to the backend in case we
+     * rely upon devices/connections like Xlib.
+    */
+    status = _cairo_surface_acquire_source_image (snapshot->target, &image, &extra);
+    if (unlikely (status)) {
+	snapshot->target = _cairo_surface_create_in_error (status);
+	status = _cairo_surface_set_error (surface, status);
+	goto unlock;
+    }
+    clone = image->base.backend->snapshot (&image->base);
+    _cairo_surface_release_source_image (snapshot->target, image, extra);
+
+done:
+    status = _cairo_surface_set_error (surface, clone->status);
+    snapshot->target = snapshot->clone = clone;
+    snapshot->base.type = clone->type;
+unlock:
+    CAIRO_MUTEX_UNLOCK (snapshot->mutex);
+}
+
+/**
+ * _cairo_surface_snapshot:
+ * @surface: a #cairo_surface_t
+ *
+ * Make an immutable reference to @surface. It is an error to call a
+ * surface-modifying function on the result of this function. The
+ * resulting 'snapshot' is a lazily copied-on-write surface i.e. it
+ * remains a reference to the original surface until that surface is
+ * written to again, at which time a copy is made of the original surface
+ * and the snapshot then points to that instead. Multiple snapshots of the
+ * same unmodified surface point to the same copy.
+ *
+ * The caller owns the return value and should call
+ * cairo_surface_destroy() when finished with it. This function will not
+ * return %NULL, but will return a nil surface instead.
+ *
+ * Return value: The snapshot surface. Note that the return surface
+ * may not necessarily be of the same type as @surface.
+ **/
+cairo_surface_t *
+_cairo_surface_snapshot (cairo_surface_t *surface)
+{
+    cairo_surface_snapshot_t *snapshot;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s: target=%d\n", __FUNCTION__, surface->unique_id));
+
+    if (unlikely (surface->status))
+	return _cairo_surface_create_in_error (surface->status);
+
+    if (unlikely (surface->finished))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (surface->snapshot_of != NULL)
+	return cairo_surface_reference (surface);
+
+    if (_cairo_surface_is_snapshot (surface))
+	return cairo_surface_reference (surface);
+
+    snapshot = (cairo_surface_snapshot_t *)
+	_cairo_surface_has_snapshot (surface, &_cairo_surface_snapshot_backend);
+    if (snapshot != NULL)
+	return cairo_surface_reference (&snapshot->base);
+
+    snapshot = _cairo_malloc (sizeof (cairo_surface_snapshot_t));
+    if (unlikely (snapshot == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    _cairo_surface_init (&snapshot->base,
+			 &_cairo_surface_snapshot_backend,
+			 NULL, /* device */
+			 surface->content,
+			 surface->is_vector);
+    snapshot->base.type = surface->type;
+
+    CAIRO_MUTEX_INIT (snapshot->mutex);
+    snapshot->target = surface;
+    snapshot->clone = NULL;
+
+    status = _cairo_surface_copy_mime_data (&snapshot->base, surface);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&snapshot->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    snapshot->base.device_transform = surface->device_transform;
+    snapshot->base.device_transform_inverse = surface->device_transform_inverse;
+
+    _cairo_surface_attach_snapshot (surface,
+				    &snapshot->base,
+				    _cairo_surface_snapshot_copy_on_write);
+
+    return &snapshot->base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-subsurface-inline.h b/libs/cairo-1.16.0/src/cairo-surface-subsurface-inline.h
new file mode 100644
index 0000000..0cd09e6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-subsurface-inline.h
@@ -0,0 +1,72 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_SUBSURFACE_INLINE_H
+#define CAIRO_SURFACE_SUBSURFACE_INLINE_H
+
+#include "cairo-surface-subsurface-private.h"
+
+static inline cairo_surface_t *
+_cairo_surface_subsurface_get_target (cairo_surface_t *surface)
+{
+    return ((cairo_surface_subsurface_t *) surface)->target;
+}
+
+static inline void
+_cairo_surface_subsurface_offset (cairo_surface_t *surface,
+				  int *x, int *y)
+{
+    cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
+    *x += ss->extents.x;
+    *y += ss->extents.y;
+}
+
+static inline cairo_surface_t *
+_cairo_surface_subsurface_get_target_with_offset (cairo_surface_t *surface,
+						  int *x, int *y)
+{
+    cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
+    *x += ss->extents.x;
+    *y += ss->extents.y;
+    return ss->target;
+}
+
+static inline cairo_bool_t
+_cairo_surface_is_subsurface (cairo_surface_t *surface)
+{
+    return surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE;
+}
+
+#endif /* CAIRO_SURFACE_SUBSURFACE_INLINE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-subsurface-private.h b/libs/cairo-1.16.0/src/cairo-surface-subsurface-private.h
new file mode 100644
index 0000000..89c5cc0
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-subsurface-private.h
@@ -0,0 +1,55 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_SURFACE_SUBSURFACE_PRIVATE_H
+#define CAIRO_SURFACE_SUBSURFACE_PRIVATE_H
+
+#include "cairo-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+struct _cairo_surface_subsurface {
+    cairo_surface_t base;
+
+    cairo_rectangle_int_t extents;
+
+    cairo_surface_t *target;
+    cairo_surface_t *snapshot;
+};
+
+cairo_private void
+_cairo_surface_subsurface_set_snapshot (cairo_surface_t *surface,
+					cairo_surface_t *snapshot);
+
+#endif /* CAIRO_SURFACE_SUBSURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-subsurface.c b/libs/cairo-1.16.0/src/cairo-surface-subsurface.c
new file mode 100644
index 0000000..b2a10e9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-subsurface.c
@@ -0,0 +1,589 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-surface-subsurface-private.h"
+
+static const cairo_surface_backend_t _cairo_surface_subsurface_backend;
+
+static cairo_status_t
+_cairo_surface_subsurface_finish (void *abstract_surface)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+
+    cairo_surface_destroy (surface->target);
+    cairo_surface_destroy (surface->snapshot);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_surface_subsurface_create_similar (void *other,
+					  cairo_content_t content,
+					  int width, int height)
+{
+    cairo_surface_subsurface_t *surface = other;
+
+    if (surface->target->backend->create_similar == NULL)
+	return NULL;
+
+    return surface->target->backend->create_similar (surface->target, content, width, height);
+}
+
+static cairo_surface_t *
+_cairo_surface_subsurface_create_similar_image (void *other,
+						cairo_format_t format,
+						int width, int height)
+{
+    cairo_surface_subsurface_t *surface = other;
+
+    if (surface->target->backend->create_similar_image == NULL)
+	return NULL;
+
+    return surface->target->backend->create_similar_image (surface->target,
+							   format,
+							   width, height);
+}
+
+static cairo_image_surface_t *
+_cairo_surface_subsurface_map_to_image (void *abstract_surface,
+					const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_rectangle_int_t target_extents;
+
+    target_extents.x = extents->x + surface->extents.x;
+    target_extents.y = extents->y + surface->extents.y;
+    target_extents.width  = extents->width;
+    target_extents.height = extents->height;
+
+    return _cairo_surface_map_to_image (surface->target, &target_extents);
+}
+
+static cairo_int_status_t
+_cairo_surface_subsurface_unmap_image (void *abstract_surface,
+				       cairo_image_surface_t *image)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    return _cairo_surface_unmap_image (surface->target, image);
+}
+
+static cairo_int_status_t
+_cairo_surface_subsurface_paint (void *abstract_surface,
+				 cairo_operator_t op,
+				 const cairo_pattern_t *source,
+				 const cairo_clip_t *clip)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
+    cairo_status_t status;
+    cairo_clip_t *target_clip;
+
+    target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
+    status = _cairo_surface_offset_paint (surface->target,
+					 -surface->extents.x, -surface->extents.y,
+					  op, source, target_clip);
+    _cairo_clip_destroy (target_clip);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_subsurface_mask (void *abstract_surface,
+				cairo_operator_t op,
+				const cairo_pattern_t *source,
+				const cairo_pattern_t *mask,
+				const cairo_clip_t *clip)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
+    cairo_status_t status;
+    cairo_clip_t *target_clip;
+
+    target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
+    status = _cairo_surface_offset_mask (surface->target,
+					 -surface->extents.x, -surface->extents.y,
+					 op, source, mask, target_clip);
+    _cairo_clip_destroy (target_clip);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_subsurface_fill (void			*abstract_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				const cairo_path_fixed_t	*path,
+				cairo_fill_rule_t	 fill_rule,
+				double			 tolerance,
+				cairo_antialias_t	 antialias,
+				const cairo_clip_t		*clip)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
+    cairo_status_t status;
+    cairo_clip_t *target_clip;
+
+    target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
+    status = _cairo_surface_offset_fill (surface->target,
+					 -surface->extents.x, -surface->extents.y,
+					 op, source, path, fill_rule, tolerance, antialias,
+					 target_clip);
+    _cairo_clip_destroy (target_clip);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_subsurface_stroke (void				*abstract_surface,
+				  cairo_operator_t		 op,
+				  const cairo_pattern_t		*source,
+				  const cairo_path_fixed_t		*path,
+				  const cairo_stroke_style_t	*stroke_style,
+				  const cairo_matrix_t		*ctm,
+				  const cairo_matrix_t		*ctm_inverse,
+				  double			 tolerance,
+				  cairo_antialias_t		 antialias,
+				  const cairo_clip_t			*clip)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
+    cairo_status_t status;
+    cairo_clip_t *target_clip;
+
+    target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
+    status = _cairo_surface_offset_stroke (surface->target,
+					   -surface->extents.x, -surface->extents.y,
+					   op, source, path, stroke_style, ctm, ctm_inverse,
+					   tolerance, antialias,
+					   target_clip);
+    _cairo_clip_destroy (target_clip);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_subsurface_glyphs (void			*abstract_surface,
+				  cairo_operator_t	 op,
+				  const cairo_pattern_t	*source,
+				  cairo_glyph_t		*glyphs,
+				  int			 num_glyphs,
+				  cairo_scaled_font_t	*scaled_font,
+				  const cairo_clip_t	*clip)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_rectangle_int_t rect = { 0, 0, surface->extents.width, surface->extents.height };
+    cairo_status_t status;
+    cairo_clip_t *target_clip;
+
+    target_clip = _cairo_clip_copy_intersect_rectangle (clip, &rect);
+    status = _cairo_surface_offset_glyphs (surface->target,
+					   -surface->extents.x, -surface->extents.y,
+					   op, source,
+					   scaled_font, glyphs, num_glyphs,
+					   target_clip);
+    _cairo_clip_destroy (target_clip);
+    return status;
+}
+
+static cairo_status_t
+_cairo_surface_subsurface_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    return _cairo_surface_flush (surface->target, flags);
+}
+
+static cairo_status_t
+_cairo_surface_subsurface_mark_dirty (void *abstract_surface,
+				      int x, int y,
+				      int width, int height)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (surface->target->backend->mark_dirty_rectangle != NULL) {
+	cairo_rectangle_int_t rect, extents;
+
+	rect.x = x;
+	rect.y = y;
+	rect.width  = width;
+	rect.height = height;
+
+	extents.x = extents.y = 0;
+	extents.width  = surface->extents.width;
+	extents.height = surface->extents.height;
+
+	if (_cairo_rectangle_intersect (&rect, &extents)) {
+	    status = surface->target->backend->mark_dirty_rectangle (surface->target,
+								     rect.x + surface->extents.x,
+								     rect.y + surface->extents.y,
+								     rect.width, rect.height);
+	}
+    }
+
+    return status;
+}
+
+static cairo_bool_t
+_cairo_surface_subsurface_get_extents (void *abstract_surface,
+				       cairo_rectangle_int_t *extents)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+
+    extents->x = 0;
+    extents->y = 0;
+    extents->width  = surface->extents.width;
+    extents->height = surface->extents.height;
+
+    return TRUE;
+}
+
+static void
+_cairo_surface_subsurface_get_font_options (void *abstract_surface,
+					    cairo_font_options_t *options)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+
+    if (surface->target->backend->get_font_options != NULL)
+	surface->target->backend->get_font_options (surface->target, options);
+}
+
+static cairo_surface_t *
+_cairo_surface_subsurface_source (void *abstract_surface,
+				  cairo_rectangle_int_t *extents)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_surface_t *source;
+
+    source = _cairo_surface_get_source (surface->target, extents);
+    if (extents)
+	*extents = surface->extents;
+
+    return source;
+}
+
+static cairo_status_t
+_cairo_surface_subsurface_acquire_source_image (void                    *abstract_surface,
+						cairo_image_surface_t  **image_out,
+						void                   **extra_out)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_surface_pattern_t pattern;
+    cairo_surface_t *image;
+    cairo_status_t status;
+
+    image = _cairo_image_surface_create_with_content (surface->base.content,
+						      surface->extents.width,
+						      surface->extents.height);
+    if (unlikely (image->status))
+	return image->status;
+
+    _cairo_pattern_init_for_surface (&pattern, surface->target);
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 surface->extents.x,
+				 surface->extents.y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    status = _cairo_surface_paint (image,
+				   CAIRO_OPERATOR_SOURCE,
+				   &pattern.base, NULL);
+    _cairo_pattern_fini (&pattern.base);
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	return status;
+    }
+
+    *image_out = (cairo_image_surface_t *)image;
+    *extra_out = NULL;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_surface_subsurface_release_source_image (void                   *abstract_surface,
+						cairo_image_surface_t  *image,
+						void                   *abstract_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_surface_t *
+_cairo_surface_subsurface_snapshot (void *abstract_surface)
+{
+    cairo_surface_subsurface_t *surface = abstract_surface;
+    cairo_surface_pattern_t pattern;
+    cairo_surface_t *clone;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s: target=%d\n", __FUNCTION__, surface->target->unique_id));
+
+    clone = _cairo_surface_create_scratch (surface->target,
+					   surface->target->content,
+					   surface->extents.width,
+					   surface->extents.height,
+					   NULL);
+    if (unlikely (clone->status))
+	return clone;
+
+    _cairo_pattern_init_for_surface (&pattern, surface->target);
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 surface->extents.x, surface->extents.y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    status = _cairo_surface_paint (clone,
+				   CAIRO_OPERATOR_SOURCE,
+				   &pattern.base, NULL);
+    _cairo_pattern_fini (&pattern.base);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (clone);
+	clone = _cairo_surface_create_in_error (status);
+    }
+
+    return clone;
+}
+
+static cairo_t *
+_cairo_surface_subsurface_create_context(void *target)
+{
+    cairo_surface_subsurface_t *surface = target;
+    return surface->target->backend->create_context (&surface->base);
+}
+
+static const cairo_surface_backend_t _cairo_surface_subsurface_backend = {
+    CAIRO_SURFACE_TYPE_SUBSURFACE,
+    _cairo_surface_subsurface_finish,
+
+    _cairo_surface_subsurface_create_context,
+
+    _cairo_surface_subsurface_create_similar,
+    _cairo_surface_subsurface_create_similar_image,
+    _cairo_surface_subsurface_map_to_image,
+    _cairo_surface_subsurface_unmap_image,
+
+    _cairo_surface_subsurface_source,
+    _cairo_surface_subsurface_acquire_source_image,
+    _cairo_surface_subsurface_release_source_image,
+    _cairo_surface_subsurface_snapshot,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_surface_subsurface_get_extents,
+    _cairo_surface_subsurface_get_font_options,
+
+    _cairo_surface_subsurface_flush,
+    _cairo_surface_subsurface_mark_dirty,
+
+    _cairo_surface_subsurface_paint,
+    _cairo_surface_subsurface_mask,
+    _cairo_surface_subsurface_stroke,
+    _cairo_surface_subsurface_fill,
+    NULL, /* fill/stroke */
+    _cairo_surface_subsurface_glyphs,
+};
+
+/**
+ * cairo_surface_create_for_rectangle:
+ * @target: an existing surface for which the sub-surface will point to
+ * @x: the x-origin of the sub-surface from the top-left of the target surface (in device-space units)
+ * @y: the y-origin of the sub-surface from the top-left of the target surface (in device-space units)
+ * @width: width of the sub-surface (in device-space units)
+ * @height: height of the sub-surface (in device-space units)
+ *
+ * Create a new surface that is a rectangle within the target surface.
+ * All operations drawn to this surface are then clipped and translated
+ * onto the target surface. Nothing drawn via this sub-surface outside of
+ * its bounds is drawn onto the target surface, making this a useful method
+ * for passing constrained child surfaces to library routines that draw
+ * directly onto the parent surface, i.e. with no further backend allocations,
+ * double buffering or copies.
+ *
+ * <note><para>The semantics of subsurfaces have not been finalized yet
+ * unless the rectangle is in full device units, is contained within
+ * the extents of the target surface, and the target or subsurface's
+ * device transforms are not changed.</para></note>
+ *
+ * Return value: a pointer to the newly allocated surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if @other is already in an error state
+ * or any other error occurs.
+ *
+ * Since: 1.10
+ **/
+cairo_surface_t *
+cairo_surface_create_for_rectangle (cairo_surface_t *target,
+				    double x, double y,
+				    double width, double height)
+{
+    cairo_surface_subsurface_t *surface;
+
+    if (unlikely (width < 0 || height < 0))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    if (unlikely (target->status))
+	return _cairo_surface_create_in_error (target->status);
+    if (unlikely (target->finished))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    surface = _cairo_malloc (sizeof (cairo_surface_subsurface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    x *= target->device_transform.xx;
+    y *= target->device_transform.yy;
+
+    width *= target->device_transform.xx;
+    height *= target->device_transform.yy;
+
+    x += target->device_transform.x0;
+    y += target->device_transform.y0;
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_surface_subsurface_backend,
+			 NULL, /* device */
+			 target->content,
+			 target->is_vector);
+
+    /* XXX forced integer alignment */
+    surface->extents.x = ceil (x);
+    surface->extents.y = ceil (y);
+    surface->extents.width = floor (x + width) - surface->extents.x;
+    surface->extents.height = floor (y + height) - surface->extents.y;
+    if ((surface->extents.width | surface->extents.height) < 0)
+	surface->extents.width = surface->extents.height = 0;
+
+    if (target->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	/* Maintain subsurfaces as 1-depth */
+	cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) target;
+	surface->extents.x += sub->extents.x;
+	surface->extents.y += sub->extents.y;
+	target = sub->target;
+    }
+
+    surface->target = cairo_surface_reference (target);
+    surface->base.type = surface->target->type;
+
+    surface->snapshot = NULL;
+
+    cairo_surface_set_device_scale (&surface->base,
+                                    target->device_transform.xx,
+                                    target->device_transform.yy);
+
+    return &surface->base;
+}
+
+cairo_surface_t *
+_cairo_surface_create_for_rectangle_int (cairo_surface_t *target,
+					 const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_subsurface_t *surface;
+
+    if (unlikely (target->status))
+	return _cairo_surface_create_in_error (target->status);
+    if (unlikely (target->finished))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    assert (target->backend->type != CAIRO_SURFACE_TYPE_SUBSURFACE);
+
+    surface = _cairo_malloc (sizeof (cairo_surface_subsurface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_surface_subsurface_backend,
+			 NULL, /* device */
+			 target->content,
+			 target->is_vector);
+
+    surface->extents = *extents;
+    surface->extents.x *= target->device_transform.xx;
+    surface->extents.y *= target->device_transform.yy;
+    surface->extents.width *= target->device_transform.xx;
+    surface->extents.height *= target->device_transform.yy;
+    surface->extents.x += target->device_transform.x0;
+    surface->extents.y += target->device_transform.y0;
+
+    surface->target = cairo_surface_reference (target);
+    surface->base.type = surface->target->type;
+
+    surface->snapshot = NULL;
+
+    cairo_surface_set_device_scale (&surface->base,
+                                    target->device_transform.xx,
+                                    target->device_transform.yy);
+
+    return &surface->base;
+}
+/* XXX observe mark-dirty */
+
+static void
+_cairo_surface_subsurface_detach_snapshot (cairo_surface_t *surface)
+{
+    cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
+
+    TRACE ((stderr, "%s: target=%d\n", __FUNCTION__, ss->target->unique_id));
+
+    cairo_surface_destroy (ss->snapshot);
+    ss->snapshot = NULL;
+}
+
+void
+_cairo_surface_subsurface_set_snapshot (cairo_surface_t *surface,
+					cairo_surface_t *snapshot)
+{
+    cairo_surface_subsurface_t *ss = (cairo_surface_subsurface_t *) surface;
+
+    TRACE ((stderr, "%s: target=%d, snapshot=%d\n", __FUNCTION__,
+	    ss->target->unique_id, snapshot->unique_id));
+
+    /* FIXME: attaching the subsurface as a snapshot to its target creates
+     * a reference cycle.  Let's make this call as a no-op until that bug
+     * is fixed.
+     */
+    return;
+
+    if (ss->snapshot)
+	_cairo_surface_detach_snapshot (ss->snapshot);
+
+    ss->snapshot = cairo_surface_reference (snapshot);
+
+    _cairo_surface_attach_snapshot (ss->target, &ss->base,
+				    _cairo_surface_subsurface_detach_snapshot);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface-wrapper-private.h b/libs/cairo-1.16.0/src/cairo-surface-wrapper-private.h
new file mode 100644
index 0000000..fd22bd7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-wrapper-private.h
@@ -0,0 +1,205 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.u>
+ */
+
+#ifndef CAIRO_SURFACE_WRAPPER_PRIVATE_H
+#define CAIRO_SURFACE_WRAPPER_PRIVATE_H
+
+#include "cairoint.h"
+#include "cairo-types-private.h"
+#include "cairo-surface-backend-private.h"
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo_surface_wrapper {
+    cairo_surface_t *target;
+
+    cairo_matrix_t transform;
+
+    cairo_bool_t has_extents;
+    cairo_rectangle_int_t extents;
+    const cairo_clip_t *clip;
+
+    cairo_bool_t needs_transform;
+};
+
+cairo_private void
+_cairo_surface_wrapper_init (cairo_surface_wrapper_t *wrapper,
+			     cairo_surface_t *target);
+
+cairo_private void
+_cairo_surface_wrapper_intersect_extents (cairo_surface_wrapper_t *wrapper,
+					  const cairo_rectangle_int_t *extents);
+
+cairo_private void
+_cairo_surface_wrapper_set_inverse_transform (cairo_surface_wrapper_t *wrapper,
+					      const cairo_matrix_t *transform);
+
+cairo_private void
+_cairo_surface_wrapper_set_clip (cairo_surface_wrapper_t *wrapper,
+				 const cairo_clip_t *clip);
+
+cairo_private void
+_cairo_surface_wrapper_fini (cairo_surface_wrapper_t *wrapper);
+
+static inline cairo_bool_t
+_cairo_surface_wrapper_has_fill_stroke (cairo_surface_wrapper_t *wrapper)
+{
+    return wrapper->target->backend->fill_stroke != NULL;
+}
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_acquire_source_image (cairo_surface_wrapper_t *wrapper,
+					     cairo_image_surface_t  **image_out,
+					     void                   **image_extra);
+
+cairo_private void
+_cairo_surface_wrapper_release_source_image (cairo_surface_wrapper_t *wrapper,
+					     cairo_image_surface_t  *image,
+					     void                   *image_extra);
+
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_paint (cairo_surface_wrapper_t *wrapper,
+			      cairo_operator_t	 op,
+			      const cairo_pattern_t *source,
+			      const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_mask (cairo_surface_wrapper_t *wrapper,
+			     cairo_operator_t	 op,
+			     const cairo_pattern_t *source,
+			     const cairo_pattern_t *mask,
+			     const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_stroke (cairo_surface_wrapper_t *wrapper,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_path_fixed_t	*path,
+			       const cairo_stroke_style_t	*stroke_style,
+			       const cairo_matrix_t		*ctm,
+			       const cairo_matrix_t		*ctm_inverse,
+			       double			 tolerance,
+			       cairo_antialias_t	 antialias,
+			       const cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_fill_stroke (cairo_surface_wrapper_t *wrapper,
+				    cairo_operator_t	     fill_op,
+				    const cairo_pattern_t   *fill_source,
+				    cairo_fill_rule_t	     fill_rule,
+				    double		     fill_tolerance,
+				    cairo_antialias_t	     fill_antialias,
+				    const cairo_path_fixed_t*path,
+				    cairo_operator_t	     stroke_op,
+				    const cairo_pattern_t   *stroke_source,
+				    const cairo_stroke_style_t    *stroke_style,
+				    const cairo_matrix_t	    *stroke_ctm,
+				    const cairo_matrix_t	    *stroke_ctm_inverse,
+				    double		     stroke_tolerance,
+				    cairo_antialias_t	     stroke_antialias,
+				    const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_fill (cairo_surface_wrapper_t *wrapper,
+			     cairo_operator_t	 op,
+			     const cairo_pattern_t *source,
+			     const cairo_path_fixed_t	*path,
+			     cairo_fill_rule_t	 fill_rule,
+			     double		 tolerance,
+			     cairo_antialias_t	 antialias,
+			     const cairo_clip_t	*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_show_text_glyphs (cairo_surface_wrapper_t *wrapper,
+					 cairo_operator_t	     op,
+					 const cairo_pattern_t	    *source,
+					 const char		    *utf8,
+					 int			     utf8_len,
+					 const cairo_glyph_t	    *glyphs,
+					 int			     num_glyphs,
+					 const cairo_text_cluster_t *clusters,
+					 int			     num_clusters,
+					 cairo_text_cluster_flags_t  cluster_flags,
+					 cairo_scaled_font_t	    *scaled_font,
+					 const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_wrapper_tag (cairo_surface_wrapper_t     *wrapper,
+			    cairo_bool_t                 begin,
+			    const char                  *tag_name,
+			    const char                  *attributes,
+			    const cairo_pattern_t	*source,
+			    const cairo_stroke_style_t	*stroke_style,
+			    const cairo_matrix_t	*ctm,
+			    const cairo_matrix_t	*ctm_inverse,
+			    const cairo_clip_t		*clip);
+
+cairo_private cairo_surface_t *
+_cairo_surface_wrapper_create_similar (cairo_surface_wrapper_t *wrapper,
+				       cairo_content_t	content,
+				       int		width,
+				       int		height);
+cairo_private cairo_bool_t
+_cairo_surface_wrapper_get_extents (cairo_surface_wrapper_t *wrapper,
+				    cairo_rectangle_int_t   *extents);
+
+cairo_private void
+_cairo_surface_wrapper_get_font_options (cairo_surface_wrapper_t    *wrapper,
+					 cairo_font_options_t	    *options);
+
+cairo_private cairo_surface_t *
+_cairo_surface_wrapper_snapshot (cairo_surface_wrapper_t *wrapper);
+
+cairo_private cairo_bool_t
+_cairo_surface_wrapper_has_show_text_glyphs (cairo_surface_wrapper_t *wrapper);
+
+static inline cairo_bool_t
+_cairo_surface_wrapper_is_active (cairo_surface_wrapper_t *wrapper)
+{
+    return wrapper->target != (cairo_surface_t *) 0;
+}
+
+cairo_private cairo_bool_t
+_cairo_surface_wrapper_get_target_extents (cairo_surface_wrapper_t *wrapper,
+					   cairo_bool_t surface_is_unbounded,
+					   cairo_rectangle_int_t *extents);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_SURFACE_WRAPPER_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-surface-wrapper.c b/libs/cairo-1.16.0/src/cairo-surface-wrapper.c
new file mode 100644
index 0000000..47155c3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface-wrapper.c
@@ -0,0 +1,729 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2007 Adrian Johnson
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-clip-inline.h"
+#include "cairo-error-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-wrapper-private.h"
+
+/* A collection of routines to facilitate surface wrapping */
+
+static void
+_copy_transformed_pattern (cairo_pattern_t *pattern,
+			   const cairo_pattern_t *original,
+			   const cairo_matrix_t  *ctm_inverse)
+{
+    _cairo_pattern_init_static_copy (pattern, original);
+
+    if (! _cairo_matrix_is_identity (ctm_inverse))
+	_cairo_pattern_transform (pattern, ctm_inverse);
+}
+
+cairo_status_t
+_cairo_surface_wrapper_acquire_source_image (cairo_surface_wrapper_t *wrapper,
+					     cairo_image_surface_t  **image_out,
+					     void                   **image_extra)
+{
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    return _cairo_surface_acquire_source_image (wrapper->target,
+						image_out, image_extra);
+}
+
+void
+_cairo_surface_wrapper_release_source_image (cairo_surface_wrapper_t *wrapper,
+					     cairo_image_surface_t  *image,
+					     void                   *image_extra)
+{
+    _cairo_surface_release_source_image (wrapper->target, image, image_extra);
+}
+
+static void
+_cairo_surface_wrapper_get_transform (cairo_surface_wrapper_t *wrapper,
+				      cairo_matrix_t *m)
+{
+    cairo_matrix_init_identity (m);
+
+    if (! _cairo_matrix_is_identity (&wrapper->transform))
+	cairo_matrix_multiply (m, &wrapper->transform, m);
+
+    if (! _cairo_matrix_is_identity (&wrapper->target->device_transform))
+	cairo_matrix_multiply (m, &wrapper->target->device_transform, m);
+}
+
+static void
+_cairo_surface_wrapper_get_inverse_transform (cairo_surface_wrapper_t *wrapper,
+					      cairo_matrix_t *m)
+{
+    cairo_matrix_init_identity (m);
+
+    if (! _cairo_matrix_is_identity (&wrapper->target->device_transform_inverse))
+	cairo_matrix_multiply (m, &wrapper->target->device_transform_inverse, m);
+
+    if (! _cairo_matrix_is_identity (&wrapper->transform)) {
+	cairo_matrix_t inv;
+	cairo_status_t status;
+
+	inv = wrapper->transform;
+	status = cairo_matrix_invert (&inv);
+	assert (status == CAIRO_STATUS_SUCCESS);
+	cairo_matrix_multiply (m, &inv, m);
+    }
+}
+
+static cairo_clip_t *
+_cairo_surface_wrapper_get_clip (cairo_surface_wrapper_t *wrapper,
+				 const cairo_clip_t *clip)
+{
+    cairo_clip_t *copy;
+    cairo_matrix_t m;
+
+    copy = _cairo_clip_copy (clip);
+    if (wrapper->has_extents) {
+	copy = _cairo_clip_intersect_rectangle (copy, &wrapper->extents);
+    }
+    _cairo_surface_wrapper_get_transform (wrapper, &m);
+    copy = _cairo_clip_transform (copy, &m);
+    if (wrapper->clip)
+	copy = _cairo_clip_intersect_clip (copy, wrapper->clip);
+
+    return copy;
+}
+
+cairo_status_t
+_cairo_surface_wrapper_paint (cairo_surface_wrapper_t *wrapper,
+			      cairo_operator_t	 op,
+			      const cairo_pattern_t *source,
+			      const cairo_clip_t    *clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip;
+    cairo_pattern_union_t source_copy;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (_cairo_clip_is_all_clipped (dev_clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    }
+
+    status = _cairo_surface_paint (wrapper->target, op, source, dev_clip);
+
+    _cairo_clip_destroy (dev_clip);
+    return status;
+}
+
+
+cairo_status_t
+_cairo_surface_wrapper_mask (cairo_surface_wrapper_t *wrapper,
+			     cairo_operator_t	 op,
+			     const cairo_pattern_t *source,
+			     const cairo_pattern_t *mask,
+			     const cairo_clip_t	    *clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip;
+    cairo_pattern_union_t source_copy;
+    cairo_pattern_union_t mask_copy;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (_cairo_clip_is_all_clipped (dev_clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+
+	_copy_transformed_pattern (&mask_copy.base, mask, &m);
+	mask = &mask_copy.base;
+    }
+
+    status = _cairo_surface_mask (wrapper->target, op, source, mask, dev_clip);
+
+    _cairo_clip_destroy (dev_clip);
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_wrapper_stroke (cairo_surface_wrapper_t *wrapper,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_path_fixed_t	*path,
+			       const cairo_stroke_style_t	*stroke_style,
+			       const cairo_matrix_t		*ctm,
+			       const cairo_matrix_t		*ctm_inverse,
+			       double			 tolerance,
+			       cairo_antialias_t	 antialias,
+			       const cairo_clip_t		*clip)
+{
+    cairo_status_t status;
+    cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
+    cairo_clip_t *dev_clip;
+    cairo_matrix_t dev_ctm = *ctm;
+    cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
+    cairo_pattern_union_t source_copy;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (_cairo_clip_is_all_clipped (dev_clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+	if (unlikely (status))
+	    goto FINISH;
+
+	_cairo_path_fixed_transform (&path_copy, &m);
+	dev_path = &path_copy;
+
+	cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
+
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    }
+
+    status = _cairo_surface_stroke (wrapper->target, op, source,
+				    dev_path, stroke_style,
+				    &dev_ctm, &dev_ctm_inverse,
+				    tolerance, antialias,
+				    dev_clip);
+
+ FINISH:
+    if (dev_path != path)
+	_cairo_path_fixed_fini (dev_path);
+    _cairo_clip_destroy (dev_clip);
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_wrapper_fill_stroke (cairo_surface_wrapper_t *wrapper,
+				    cairo_operator_t	     fill_op,
+				    const cairo_pattern_t   *fill_source,
+				    cairo_fill_rule_t	     fill_rule,
+				    double		     fill_tolerance,
+				    cairo_antialias_t	     fill_antialias,
+				    const cairo_path_fixed_t*path,
+				    cairo_operator_t	     stroke_op,
+				    const cairo_pattern_t   *stroke_source,
+				    const cairo_stroke_style_t    *stroke_style,
+				    const cairo_matrix_t	    *stroke_ctm,
+				    const cairo_matrix_t	    *stroke_ctm_inverse,
+				    double		     stroke_tolerance,
+				    cairo_antialias_t	     stroke_antialias,
+				    const cairo_clip_t	    *clip)
+{
+    cairo_status_t status;
+    cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *)path;
+    cairo_matrix_t dev_ctm = *stroke_ctm;
+    cairo_matrix_t dev_ctm_inverse = *stroke_ctm_inverse;
+    cairo_clip_t *dev_clip;
+    cairo_pattern_union_t stroke_source_copy;
+    cairo_pattern_union_t fill_source_copy;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (_cairo_clip_is_all_clipped (dev_clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+	if (unlikely (status))
+	    goto FINISH;
+
+	_cairo_path_fixed_transform (&path_copy, &m);
+	dev_path = &path_copy;
+
+	cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
+
+	_copy_transformed_pattern (&stroke_source_copy.base, stroke_source, &m);
+	stroke_source = &stroke_source_copy.base;
+
+	_copy_transformed_pattern (&fill_source_copy.base, fill_source, &m);
+	fill_source = &fill_source_copy.base;
+    }
+
+    status = _cairo_surface_fill_stroke (wrapper->target,
+					 fill_op, fill_source, fill_rule,
+					 fill_tolerance, fill_antialias,
+					 dev_path,
+					 stroke_op, stroke_source,
+					 stroke_style,
+					 &dev_ctm, &dev_ctm_inverse,
+					 stroke_tolerance, stroke_antialias,
+					 dev_clip);
+
+  FINISH:
+    if (dev_path != path)
+	_cairo_path_fixed_fini (dev_path);
+    _cairo_clip_destroy (dev_clip);
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_wrapper_fill (cairo_surface_wrapper_t	*wrapper,
+			     cairo_operator_t	 op,
+			     const cairo_pattern_t *source,
+			     const cairo_path_fixed_t	*path,
+			     cairo_fill_rule_t	 fill_rule,
+			     double		 tolerance,
+			     cairo_antialias_t	 antialias,
+			     const cairo_clip_t	*clip)
+{
+    cairo_status_t status;
+    cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
+    cairo_pattern_union_t source_copy;
+    cairo_clip_t *dev_clip;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (_cairo_clip_is_all_clipped (dev_clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
+	if (unlikely (status))
+	    goto FINISH;
+
+	_cairo_path_fixed_transform (&path_copy, &m);
+	dev_path = &path_copy;
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    }
+
+    status = _cairo_surface_fill (wrapper->target, op, source,
+				  dev_path, fill_rule,
+				  tolerance, antialias,
+				  dev_clip);
+
+ FINISH:
+    if (dev_path != path)
+	_cairo_path_fixed_fini (dev_path);
+    _cairo_clip_destroy (dev_clip);
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_wrapper_show_text_glyphs (cairo_surface_wrapper_t *wrapper,
+					 cairo_operator_t	     op,
+					 const cairo_pattern_t	    *source,
+					 const char		    *utf8,
+					 int			     utf8_len,
+					 const cairo_glyph_t	    *glyphs,
+					 int			     num_glyphs,
+					 const cairo_text_cluster_t *clusters,
+					 int			     num_clusters,
+					 cairo_text_cluster_flags_t  cluster_flags,
+					 cairo_scaled_font_t	    *scaled_font,
+					 const cairo_clip_t	    *clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip;
+    cairo_glyph_t stack_glyphs [CAIRO_STACK_ARRAY_LENGTH(cairo_glyph_t)];
+    cairo_glyph_t *dev_glyphs = stack_glyphs;
+    cairo_scaled_font_t *dev_scaled_font = scaled_font;
+    cairo_pattern_union_t source_copy;
+    cairo_font_options_t options;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (_cairo_clip_is_all_clipped (dev_clip))
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+    cairo_surface_get_font_options (wrapper->target, &options);
+    cairo_font_options_merge (&options, &scaled_font->options);
+
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+	int i;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	if (! _cairo_matrix_is_translation (&m)) {
+	    cairo_matrix_t ctm;
+
+	    _cairo_matrix_multiply (&ctm,
+				    &m,
+				    &scaled_font->ctm);
+	    dev_scaled_font = cairo_scaled_font_create (scaled_font->font_face,
+							&scaled_font->font_matrix,
+							&ctm, &options);
+	}
+
+	if (num_glyphs > ARRAY_LENGTH (stack_glyphs)) {
+	    dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+	    if (unlikely (dev_glyphs == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto FINISH;
+	    }
+	}
+
+	for (i = 0; i < num_glyphs; i++) {
+	    dev_glyphs[i] = glyphs[i];
+	    cairo_matrix_transform_point (&m,
+					  &dev_glyphs[i].x,
+					  &dev_glyphs[i].y);
+	}
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    } else {
+	if (! cairo_font_options_equal (&options, &scaled_font->options)) {
+	    dev_scaled_font = cairo_scaled_font_create (scaled_font->font_face,
+							&scaled_font->font_matrix,
+							&scaled_font->ctm,
+							&options);
+	}
+
+	/* show_text_glyphs is special because _cairo_surface_show_text_glyphs is allowed
+	 * to modify the glyph array that's passed in.  We must always
+	 * copy the array before handing it to the backend.
+	 */
+	if (num_glyphs > ARRAY_LENGTH (stack_glyphs)) {
+	    dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+	    if (unlikely (dev_glyphs == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto FINISH;
+	    }
+	}
+
+	memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
+    }
+
+    status = _cairo_surface_show_text_glyphs (wrapper->target, op, source,
+					      utf8, utf8_len,
+					      dev_glyphs, num_glyphs,
+					      clusters, num_clusters,
+					      cluster_flags,
+					      dev_scaled_font,
+					      dev_clip);
+ FINISH:
+    _cairo_clip_destroy (dev_clip);
+    if (dev_glyphs != stack_glyphs)
+	free (dev_glyphs);
+    if (dev_scaled_font != scaled_font)
+	cairo_scaled_font_destroy (dev_scaled_font);
+    return status;
+}
+
+cairo_status_t
+_cairo_surface_wrapper_tag (cairo_surface_wrapper_t     *wrapper,
+			    cairo_bool_t                 begin,
+			    const char                  *tag_name,
+			    const char                  *attributes,
+			    const cairo_pattern_t	*source,
+			    const cairo_stroke_style_t	*stroke_style,
+			    const cairo_matrix_t	*ctm,
+			    const cairo_matrix_t	*ctm_inverse,
+			    const cairo_clip_t		*clip)
+{
+    cairo_status_t status;
+    cairo_clip_t *dev_clip;
+    cairo_matrix_t dev_ctm = *ctm;
+    cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
+    cairo_pattern_union_t source_copy;
+
+    if (unlikely (wrapper->target->status))
+	return wrapper->target->status;
+
+    dev_clip = _cairo_surface_wrapper_get_clip (wrapper, clip);
+    if (wrapper->needs_transform) {
+	cairo_matrix_t m;
+
+	_cairo_surface_wrapper_get_transform (wrapper, &m);
+
+	cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
+
+	status = cairo_matrix_invert (&m);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
+
+	_copy_transformed_pattern (&source_copy.base, source, &m);
+	source = &source_copy.base;
+    }
+
+    status = _cairo_surface_tag (wrapper->target,
+				 begin, tag_name, attributes,
+				 source, stroke_style,
+				 &dev_ctm, &dev_ctm_inverse,
+				 dev_clip);
+
+    _cairo_clip_destroy (dev_clip);
+    return status;
+}
+
+cairo_surface_t *
+_cairo_surface_wrapper_create_similar (cairo_surface_wrapper_t *wrapper,
+				       cairo_content_t	content,
+				       int		width,
+				       int		height)
+{
+    return _cairo_surface_create_scratch (wrapper->target,
+					  content, width, height, NULL);
+}
+
+cairo_bool_t
+_cairo_surface_wrapper_get_extents (cairo_surface_wrapper_t *wrapper,
+				    cairo_rectangle_int_t   *extents)
+{
+    if (wrapper->has_extents) {
+	if (_cairo_surface_get_extents (wrapper->target, extents))
+	    _cairo_rectangle_intersect (extents, &wrapper->extents);
+	else
+	    *extents = wrapper->extents;
+
+	return TRUE;
+    } else {
+	return _cairo_surface_get_extents (wrapper->target, extents);
+    }
+}
+
+static cairo_bool_t
+_cairo_surface_wrapper_needs_device_transform (cairo_surface_wrapper_t *wrapper)
+{
+    return
+	(wrapper->has_extents && (wrapper->extents.x | wrapper->extents.y)) ||
+	! _cairo_matrix_is_identity (&wrapper->transform) ||
+	! _cairo_matrix_is_identity (&wrapper->target->device_transform);
+}
+
+void
+_cairo_surface_wrapper_intersect_extents (cairo_surface_wrapper_t *wrapper,
+					  const cairo_rectangle_int_t *extents)
+{
+    if (! wrapper->has_extents) {
+	wrapper->extents = *extents;
+	wrapper->has_extents = TRUE;
+    } else
+	_cairo_rectangle_intersect (&wrapper->extents, extents);
+
+    wrapper->needs_transform =
+	_cairo_surface_wrapper_needs_device_transform (wrapper);
+}
+
+void
+_cairo_surface_wrapper_set_inverse_transform (cairo_surface_wrapper_t *wrapper,
+					      const cairo_matrix_t *transform)
+{
+    cairo_status_t status;
+
+    if (transform == NULL || _cairo_matrix_is_identity (transform)) {
+	cairo_matrix_init_identity (&wrapper->transform);
+
+	wrapper->needs_transform =
+	    _cairo_surface_wrapper_needs_device_transform (wrapper);
+    } else {
+	wrapper->transform = *transform;
+	status = cairo_matrix_invert (&wrapper->transform);
+	/* should always be invertible unless given pathological input */
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	wrapper->needs_transform = TRUE;
+    }
+}
+
+void
+_cairo_surface_wrapper_set_clip (cairo_surface_wrapper_t *wrapper,
+				 const cairo_clip_t *clip)
+{
+    wrapper->clip = clip;
+}
+
+void
+_cairo_surface_wrapper_get_font_options (cairo_surface_wrapper_t    *wrapper,
+					 cairo_font_options_t	    *options)
+{
+    cairo_surface_get_font_options (wrapper->target, options);
+}
+
+cairo_surface_t *
+_cairo_surface_wrapper_snapshot (cairo_surface_wrapper_t *wrapper)
+{
+    if (wrapper->target->backend->snapshot)
+	return wrapper->target->backend->snapshot (wrapper->target);
+
+    return NULL;
+}
+
+cairo_bool_t
+_cairo_surface_wrapper_has_show_text_glyphs (cairo_surface_wrapper_t *wrapper)
+{
+    return cairo_surface_has_show_text_glyphs (wrapper->target);
+}
+
+void
+_cairo_surface_wrapper_init (cairo_surface_wrapper_t *wrapper,
+			     cairo_surface_t *target)
+{
+    wrapper->target = cairo_surface_reference (target);
+    cairo_matrix_init_identity (&wrapper->transform);
+    wrapper->has_extents = FALSE;
+    wrapper->extents.x = wrapper->extents.y = 0;
+    wrapper->clip = NULL;
+
+    wrapper->needs_transform = FALSE;
+    if (target) {
+	wrapper->needs_transform =
+	    ! _cairo_matrix_is_identity (&target->device_transform);
+    }
+}
+
+void
+_cairo_surface_wrapper_fini (cairo_surface_wrapper_t *wrapper)
+{
+    cairo_surface_destroy (wrapper->target);
+}
+
+cairo_bool_t
+_cairo_surface_wrapper_get_target_extents (cairo_surface_wrapper_t *wrapper,
+					   cairo_bool_t surface_is_unbounded,
+					   cairo_rectangle_int_t *extents)
+{
+    cairo_rectangle_int_t clip;
+    cairo_bool_t has_clip = FALSE;
+
+    if (!surface_is_unbounded)
+	has_clip = _cairo_surface_get_extents (wrapper->target, &clip);
+
+    if (wrapper->clip) {
+	if (has_clip) {
+	    if (! _cairo_rectangle_intersect (&clip,
+					      _cairo_clip_get_extents (wrapper->clip)))
+		return FALSE;
+	} else {
+	    has_clip = TRUE;
+	    clip = *_cairo_clip_get_extents (wrapper->clip);
+	}
+    }
+
+    if (has_clip && wrapper->needs_transform) {
+	cairo_matrix_t m;
+	double x1, y1, x2, y2;
+
+	_cairo_surface_wrapper_get_inverse_transform (wrapper, &m);
+
+	x1 = clip.x;
+	y1 = clip.y;
+	x2 = clip.x + clip.width;
+	y2 = clip.y + clip.height;
+
+	_cairo_matrix_transform_bounding_box (&m, &x1, &y1, &x2, &y2, NULL);
+
+	clip.x = floor (x1);
+	clip.y = floor (y1);
+	clip.width  = ceil (x2) - clip.x;
+	clip.height = ceil (y2) - clip.y;
+    }
+
+    if (has_clip) {
+	if (wrapper->has_extents) {
+	    *extents = wrapper->extents;
+	    return _cairo_rectangle_intersect (extents, &clip);
+	} else {
+	    *extents = clip;
+	    return TRUE;
+	}
+    } else if (wrapper->has_extents) {
+	*extents = wrapper->extents;
+	return TRUE;
+    } else {
+	_cairo_unbounded_rectangle_init (extents);
+	return TRUE;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-surface.c b/libs/cairo-1.16.0/src/cairo-surface.c
new file mode 100644
index 0000000..596ca25
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-surface.c
@@ -0,0 +1,3081 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-damage-private.h"
+#include "cairo-device-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-inline.h"
+#include "cairo-tee-surface-private.h"
+
+/**
+ * SECTION:cairo-surface
+ * @Title: cairo_surface_t
+ * @Short_Description: Base class for surfaces
+ * @See_Also: #cairo_t, #cairo_pattern_t
+ *
+ * #cairo_surface_t is the abstract type representing all different drawing
+ * targets that cairo can render to.  The actual drawings are
+ * performed using a cairo <firstterm>context</firstterm>.
+ *
+ * A cairo surface is created by using <firstterm>backend</firstterm>-specific
+ * constructors, typically of the form
+ * <function>cairo_<emphasis>backend</emphasis>_surface_create(<!-- -->)</function>.
+ *
+ * Most surface types allow accessing the surface without using Cairo
+ * functions. If you do this, keep in mind that it is mandatory that you call
+ * cairo_surface_flush() before reading from or writing to the surface and that
+ * you must use cairo_surface_mark_dirty() after modifying it.
+ * <example>
+ * <title>Directly modifying an image surface</title>
+ * <programlisting>
+ * void
+ * modify_image_surface (cairo_surface_t *surface)
+ * {
+ *   unsigned char *data;
+ *   int width, height, stride;
+ *
+ *   // flush to ensure all writing to the image was done
+ *   cairo_surface_flush (surface);
+ *
+ *   // modify the image
+ *   data = cairo_image_surface_get_data (surface);
+ *   width = cairo_image_surface_get_width (surface);
+ *   height = cairo_image_surface_get_height (surface);
+ *   stride = cairo_image_surface_get_stride (surface);
+ *   modify_image_data (data, width, height, stride);
+ *
+ *   // mark the image dirty so Cairo clears its caches.
+ *   cairo_surface_mark_dirty (surface);
+ * }
+ * </programlisting>
+ * </example>
+ * Note that for other surface types it might be necessary to acquire the
+ * surface's device first. See cairo_device_acquire() for a discussion of
+ * devices.
+ **/
+
+#define DEFINE_NIL_SURFACE(status, name)			\
+const cairo_surface_t name = {					\
+    NULL,				/* backend */		\
+    NULL,				/* device */		\
+    CAIRO_SURFACE_TYPE_IMAGE,		/* type */		\
+    CAIRO_CONTENT_COLOR,		/* content */		\
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */		\
+    status,				/* status */		\
+    0,					/* unique id */		\
+    0,					/* serial */		\
+    NULL,				/* damage */		\
+    FALSE,				/* _finishing */	\
+    FALSE,				/* finished */		\
+    TRUE,				/* is_clear */		\
+    FALSE,				/* has_font_options */	\
+    FALSE,				/* owns_device */ \
+    FALSE,                              /* is_vector */ \
+    { 0, 0, 0, NULL, },			/* user_data */		\
+    { 0, 0, 0, NULL, },			/* mime_data */         \
+    { 1.0, 0.0, 0.0, 1.0, 0.0, 0.0 },   /* device_transform */	\
+    { 1.0, 0.0,	0.0, 1.0, 0.0, 0.0 },	/* device_transform_inverse */	\
+    { NULL, NULL },			/* device_transform_observers */ \
+    0.0,				/* x_resolution */	\
+    0.0,				/* y_resolution */	\
+    0.0,				/* x_fallback_resolution */	\
+    0.0,				/* y_fallback_resolution */	\
+    NULL,				/* snapshot_of */	\
+    NULL,				/* snapshot_detach */	\
+    { NULL, NULL },			/* snapshots */		\
+    { NULL, NULL },			/* snapshot */		\
+    { CAIRO_ANTIALIAS_DEFAULT,		/* antialias */		\
+      CAIRO_SUBPIXEL_ORDER_DEFAULT,	/* subpixel_order */	\
+      CAIRO_LCD_FILTER_DEFAULT,		/* lcd_filter */	\
+      CAIRO_HINT_STYLE_DEFAULT,		/* hint_style */	\
+      CAIRO_HINT_METRICS_DEFAULT,	/* hint_metrics */	\
+      CAIRO_ROUND_GLYPH_POS_DEFAULT	/* round_glyph_positions */	\
+    }					/* font_options */	\
+}
+
+/* XXX error object! */
+
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_NO_MEMORY, _cairo_surface_nil);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_SURFACE_TYPE_MISMATCH, _cairo_surface_nil_surface_type_mismatch);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_INVALID_STATUS, _cairo_surface_nil_invalid_status);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_INVALID_CONTENT, _cairo_surface_nil_invalid_content);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_INVALID_FORMAT, _cairo_surface_nil_invalid_format);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_INVALID_VISUAL, _cairo_surface_nil_invalid_visual);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_FILE_NOT_FOUND, _cairo_surface_nil_file_not_found);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_TEMP_FILE_ERROR, _cairo_surface_nil_temp_file_error);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_READ_ERROR, _cairo_surface_nil_read_error);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_WRITE_ERROR, _cairo_surface_nil_write_error);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_INVALID_STRIDE, _cairo_surface_nil_invalid_stride);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_INVALID_SIZE, _cairo_surface_nil_invalid_size);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_DEVICE_TYPE_MISMATCH, _cairo_surface_nil_device_type_mismatch);
+static DEFINE_NIL_SURFACE(CAIRO_STATUS_DEVICE_ERROR, _cairo_surface_nil_device_error);
+
+static DEFINE_NIL_SURFACE(CAIRO_INT_STATUS_UNSUPPORTED, _cairo_surface_nil_unsupported);
+static DEFINE_NIL_SURFACE(CAIRO_INT_STATUS_NOTHING_TO_DO, _cairo_surface_nil_nothing_to_do);
+
+static void _cairo_surface_finish_snapshots (cairo_surface_t *surface);
+static void _cairo_surface_finish (cairo_surface_t *surface);
+
+/**
+ * _cairo_surface_set_error:
+ * @surface: a surface
+ * @status: a status value indicating an error
+ *
+ * Atomically sets surface->status to @status and calls _cairo_error;
+ * Does nothing if status is %CAIRO_STATUS_SUCCESS or any of the internal
+ * status values.
+ *
+ * All assignments of an error status to surface->status should happen
+ * through _cairo_surface_set_error(). Note that due to the nature of
+ * the atomic operation, it is not safe to call this function on the
+ * nil objects.
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ *
+ * Return value: the error status.
+ **/
+cairo_int_status_t
+_cairo_surface_set_error (cairo_surface_t *surface,
+			  cairo_int_status_t status)
+{
+    /* NOTHING_TO_DO is magic. We use it to break out of the inner-most
+     * surface function, but anything higher just sees "success".
+     */
+    if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+	status = CAIRO_INT_STATUS_SUCCESS;
+
+    if (status == CAIRO_INT_STATUS_SUCCESS ||
+        status >= (int)CAIRO_INT_STATUS_LAST_STATUS)
+        return status;
+
+    /* Don't overwrite an existing error. This preserves the first
+     * error, which is the most significant. */
+    _cairo_status_set_error (&surface->status, (cairo_status_t)status);
+
+    return _cairo_error (status);
+}
+
+/**
+ * cairo_surface_get_type:
+ * @surface: a #cairo_surface_t
+ *
+ * This function returns the type of the backend used to create
+ * a surface. See #cairo_surface_type_t for available types.
+ *
+ * Return value: The type of @surface.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_type_t
+cairo_surface_get_type (cairo_surface_t *surface)
+{
+    /* We don't use surface->backend->type here so that some of the
+     * special "wrapper" surfaces such as cairo_paginated_surface_t
+     * can override surface->type with the type of the "child"
+     * surface. */
+    return surface->type;
+}
+
+/**
+ * cairo_surface_get_content:
+ * @surface: a #cairo_surface_t
+ *
+ * This function returns the content type of @surface which indicates
+ * whether the surface contains color and/or alpha information. See
+ * #cairo_content_t.
+ *
+ * Return value: The content type of @surface.
+ *
+ * Since: 1.2
+ **/
+cairo_content_t
+cairo_surface_get_content (cairo_surface_t *surface)
+{
+    return surface->content;
+}
+
+/**
+ * cairo_surface_status:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks whether an error has previously occurred for this
+ * surface.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, %CAIRO_STATUS_NULL_POINTER,
+ * %CAIRO_STATUS_NO_MEMORY, %CAIRO_STATUS_READ_ERROR,
+ * %CAIRO_STATUS_INVALID_CONTENT, %CAIRO_STATUS_INVALID_FORMAT, or
+ * %CAIRO_STATUS_INVALID_VISUAL.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_surface_status (cairo_surface_t *surface)
+{
+    return surface->status;
+}
+slim_hidden_def (cairo_surface_status);
+
+static unsigned int
+_cairo_surface_allocate_unique_id (void)
+{
+    static cairo_atomic_int_t unique_id;
+
+#if CAIRO_NO_MUTEX
+    if (++unique_id == 0)
+	unique_id = 1;
+    return unique_id;
+#else
+    cairo_atomic_int_t old, id;
+
+    do {
+	old = _cairo_atomic_uint_get (&unique_id);
+	id = old + 1;
+	if (id == 0)
+	    id = 1;
+    } while (! _cairo_atomic_uint_cmpxchg (&unique_id, old, id));
+
+    return id;
+#endif
+}
+
+/**
+ * cairo_surface_get_device:
+ * @surface: a #cairo_surface_t
+ *
+ * This function returns the device for a @surface.
+ * See #cairo_device_t.
+ *
+ * Return value: The device for @surface or %NULL if the surface does
+ *               not have an associated device.
+ *
+ * Since: 1.10
+ **/
+cairo_device_t *
+cairo_surface_get_device (cairo_surface_t *surface)
+{
+    if (unlikely (surface->status))
+	return _cairo_device_create_in_error (surface->status);
+
+    return surface->device;
+}
+
+static cairo_bool_t
+_cairo_surface_has_snapshots (cairo_surface_t *surface)
+{
+    return ! cairo_list_is_empty (&surface->snapshots);
+}
+
+static cairo_bool_t
+_cairo_surface_has_mime_data (cairo_surface_t *surface)
+{
+    return surface->mime_data.num_elements != 0;
+}
+
+static void
+_cairo_surface_detach_mime_data (cairo_surface_t *surface)
+{
+    if (! _cairo_surface_has_mime_data (surface))
+	return;
+
+    _cairo_user_data_array_fini (&surface->mime_data);
+    _cairo_user_data_array_init (&surface->mime_data);
+}
+
+static void
+_cairo_surface_detach_snapshots (cairo_surface_t *surface)
+{
+    while (_cairo_surface_has_snapshots (surface)) {
+	_cairo_surface_detach_snapshot (cairo_list_first_entry (&surface->snapshots,
+								cairo_surface_t,
+								snapshot));
+    }
+}
+
+void
+_cairo_surface_detach_snapshot (cairo_surface_t *snapshot)
+{
+    assert (snapshot->snapshot_of != NULL);
+
+    snapshot->snapshot_of = NULL;
+    cairo_list_del (&snapshot->snapshot);
+
+    if (snapshot->snapshot_detach != NULL)
+	snapshot->snapshot_detach (snapshot);
+
+    cairo_surface_destroy (snapshot);
+}
+
+void
+_cairo_surface_attach_snapshot (cairo_surface_t *surface,
+				 cairo_surface_t *snapshot,
+				 cairo_surface_func_t detach_func)
+{
+    assert (surface != snapshot);
+    assert (snapshot->snapshot_of != surface);
+
+    cairo_surface_reference (snapshot);
+
+    if (snapshot->snapshot_of != NULL)
+	_cairo_surface_detach_snapshot (snapshot);
+
+    snapshot->snapshot_of = surface;
+    snapshot->snapshot_detach = detach_func;
+
+    cairo_list_add (&snapshot->snapshot, &surface->snapshots);
+
+    assert (_cairo_surface_has_snapshot (surface, snapshot->backend) == snapshot);
+}
+
+cairo_surface_t *
+_cairo_surface_has_snapshot (cairo_surface_t *surface,
+			     const cairo_surface_backend_t *backend)
+{
+    cairo_surface_t *snapshot;
+
+    cairo_list_foreach_entry (snapshot, cairo_surface_t,
+			      &surface->snapshots, snapshot)
+    {
+	if (snapshot->backend == backend)
+	    return snapshot;
+    }
+
+    return NULL;
+}
+
+cairo_status_t
+_cairo_surface_begin_modification (cairo_surface_t *surface)
+{
+    assert (surface->status == CAIRO_STATUS_SUCCESS);
+    assert (! surface->finished);
+
+    return _cairo_surface_flush (surface, 1);
+}
+
+void
+_cairo_surface_init (cairo_surface_t			*surface,
+		     const cairo_surface_backend_t	*backend,
+		     cairo_device_t			*device,
+		     cairo_content_t			 content,
+		     cairo_bool_t                        is_vector)
+{
+    CAIRO_MUTEX_INITIALIZE ();
+
+    surface->backend = backend;
+    surface->device = cairo_device_reference (device);
+    surface->content = content;
+    surface->type = backend->type;
+    surface->is_vector = is_vector;
+
+    CAIRO_REFERENCE_COUNT_INIT (&surface->ref_count, 1);
+    surface->status = CAIRO_STATUS_SUCCESS;
+    surface->unique_id = _cairo_surface_allocate_unique_id ();
+    surface->finished = FALSE;
+    surface->_finishing = FALSE;
+    surface->is_clear = FALSE;
+    surface->serial = 0;
+    surface->damage = NULL;
+    surface->owns_device = (device != NULL);
+
+    _cairo_user_data_array_init (&surface->user_data);
+    _cairo_user_data_array_init (&surface->mime_data);
+
+    cairo_matrix_init_identity (&surface->device_transform);
+    cairo_matrix_init_identity (&surface->device_transform_inverse);
+    cairo_list_init (&surface->device_transform_observers);
+
+    surface->x_resolution = CAIRO_SURFACE_RESOLUTION_DEFAULT;
+    surface->y_resolution = CAIRO_SURFACE_RESOLUTION_DEFAULT;
+
+    surface->x_fallback_resolution = CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT;
+    surface->y_fallback_resolution = CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT;
+
+    cairo_list_init (&surface->snapshots);
+    surface->snapshot_of = NULL;
+
+    surface->has_font_options = FALSE;
+}
+
+static void
+_cairo_surface_copy_similar_properties (cairo_surface_t *surface,
+					cairo_surface_t *other)
+{
+    if (other->has_font_options || other->backend != surface->backend) {
+	cairo_font_options_t options;
+
+	cairo_surface_get_font_options (other, &options);
+	_cairo_surface_set_font_options (surface, &options);
+    }
+
+    cairo_surface_set_fallback_resolution (surface,
+					   other->x_fallback_resolution,
+					   other->y_fallback_resolution);
+}
+
+/**
+ * cairo_surface_create_similar:
+ * @other: an existing surface used to select the backend of the new surface
+ * @content: the content for the new surface
+ * @width: width of the new surface, (in device-space units)
+ * @height: height of the new surface (in device-space units)
+ *
+ * Create a new surface that is as compatible as possible with an
+ * existing surface. For example the new surface will have the same
+ * device scale, fallback resolution and font options as
+ * @other. Generally, the new surface will also use the same backend
+ * as @other, unless that is not possible for some reason. The type of
+ * the returned surface may be examined with
+ * cairo_surface_get_type().
+ *
+ * Initially the surface contents are all 0 (transparent if contents
+ * have transparency, black otherwise.)
+ *
+ * Use cairo_surface_create_similar_image() if you need an image surface
+ * which can be painted quickly to the target surface.
+ *
+ * Return value: a pointer to the newly allocated surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if @other is already in an error state
+ * or any other error occurs.
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_surface_create_similar (cairo_surface_t  *other,
+			      cairo_content_t	content,
+			      int		width,
+			      int		height)
+{
+    cairo_surface_t *surface;
+    cairo_status_t status;
+    cairo_solid_pattern_t pattern;
+
+    if (unlikely (other->status))
+	return _cairo_surface_create_in_error (other->status);
+    if (unlikely (other->finished))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+    if (unlikely (width < 0 || height < 0))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_SIZE);
+    if (unlikely (! CAIRO_CONTENT_VALID (content)))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_CONTENT);
+
+    /* We inherit the device scale, so create a larger surface */
+    width = width * other->device_transform.xx;
+    height = height * other->device_transform.yy;
+
+    surface = NULL;
+    if (other->backend->create_similar)
+	surface = other->backend->create_similar (other, content, width, height);
+    if (surface == NULL)
+	surface = cairo_surface_create_similar_image (other,
+						      _cairo_format_from_content (content),
+						      width, height);
+
+    if (unlikely (surface->status))
+	return surface;
+
+    _cairo_surface_copy_similar_properties (surface, other);
+    cairo_surface_set_device_scale (surface,
+				    other->device_transform.xx,
+				    other->device_transform.yy);
+
+    if (unlikely (surface->status))
+	return surface;
+
+    _cairo_pattern_init_solid (&pattern, CAIRO_COLOR_TRANSPARENT);
+    status = _cairo_surface_paint (surface,
+				   CAIRO_OPERATOR_CLEAR,
+				   &pattern.base, NULL);
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+    }
+
+    assert (surface->is_clear);
+
+    return surface;
+}
+
+/**
+ * cairo_surface_create_similar_image:
+ * @other: an existing surface used to select the preference of the new surface
+ * @format: the format for the new surface
+ * @width: width of the new surface, (in pixels)
+ * @height: height of the new surface (in pixels)
+ *
+ * Create a new image surface that is as compatible as possible for uploading
+ * to and the use in conjunction with an existing surface. However, this surface
+ * can still be used like any normal image surface. Unlike
+ * cairo_surface_create_similar() the new image surface won't inherit
+ * the device scale from @other.
+ *
+ * Initially the surface contents are all 0 (transparent if contents
+ * have transparency, black otherwise.)
+ *
+ * Use cairo_surface_create_similar() if you don't need an image surface.
+ *
+ * Return value: a pointer to the newly allocated image surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if @other is already in an error state
+ * or any other error occurs.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_surface_create_similar_image (cairo_surface_t  *other,
+				    cairo_format_t    format,
+				    int		width,
+				    int		height)
+{
+    cairo_surface_t *image;
+
+    if (unlikely (other->status))
+	return _cairo_surface_create_in_error (other->status);
+    if (unlikely (other->finished))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    if (unlikely (width < 0 || height < 0))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_SIZE);
+    if (unlikely (! CAIRO_FORMAT_VALID (format)))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_FORMAT);
+
+    image = NULL;
+    if (other->backend->create_similar_image)
+	image = other->backend->create_similar_image (other,
+						      format, width, height);
+    if (image == NULL)
+	image = cairo_image_surface_create (format, width, height);
+
+    assert (image->is_clear);
+
+    return image;
+}
+slim_hidden_def (cairo_surface_create_similar_image);
+
+/**
+ * _cairo_surface_map_to_image:
+ * @surface: an existing surface used to extract the image from
+ * @extents: limit the extraction to an rectangular region
+ *
+ * Returns an image surface that is the most efficient mechanism for
+ * modifying the backing store of the target surface. The region
+ * retrieved is limited to @extents.
+ *
+ * Note, the use of the original surface as a target or source whilst
+ * it is mapped is undefined. The result of mapping the surface
+ * multiple times is undefined. Calling cairo_surface_destroy() or
+ * cairo_surface_finish() on the resulting image surface results in
+ * undefined behavior. Changing the device transform of the image
+ * surface or of @surface before the image surface is unmapped results
+ * in undefined behavior.
+ *
+ * Assumes that @surface is valid (CAIRO_STATUS_SUCCESS,
+ * non-finished).
+ *
+ * Return value: a pointer to the newly allocated image surface. The
+ * caller must use _cairo_surface_unmap_image() to destroy this image
+ * surface.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if @other is already in an error state
+ * or any other error occurs.
+ *
+ * The returned image might have a %CAIRO_FORMAT_INVALID format.
+ **/
+cairo_image_surface_t *
+_cairo_surface_map_to_image (cairo_surface_t  *surface,
+			     const cairo_rectangle_int_t *extents)
+{
+    cairo_image_surface_t *image = NULL;
+
+    assert (extents != NULL);
+
+    /* TODO: require map_to_image != NULL */
+    if (surface->backend->map_to_image)
+	image = surface->backend->map_to_image (surface, extents);
+
+    if (image == NULL)
+	image = _cairo_image_surface_clone_subimage (surface, extents);
+
+    return image;
+}
+
+/**
+ * _cairo_surface_unmap_image:
+ * @surface: the surface passed to _cairo_surface_map_to_image().
+ * @image: the currently mapped image
+ *
+ * Unmaps the image surface as returned from
+ * _cairo_surface_map_to_image().
+ *
+ * The content of the image will be uploaded to the target surface.
+ * Afterwards, the image is destroyed.
+ *
+ * Using an image surface which wasn't returned by
+ * _cairo_surface_map_to_image() results in undefined behavior.
+ *
+ * An image surface in error status can be passed to
+ * _cairo_surface_unmap_image().
+ *
+ * Return value: the unmap status.
+ *
+ * Even if the unmap status is not successful, @image is destroyed.
+ **/
+cairo_int_status_t
+_cairo_surface_unmap_image (cairo_surface_t       *surface,
+			    cairo_image_surface_t *image)
+{
+    cairo_surface_pattern_t pattern;
+    cairo_rectangle_int_t extents;
+    cairo_clip_t *clip;
+    cairo_int_status_t status;
+
+    /* map_to_image can return error surfaces */
+    if (unlikely (image->base.status)) {
+	status = image->base.status;
+	goto destroy;
+    }
+
+    /* If the image is untouched just skip the update */
+    if (image->base.serial == 0) {
+	status = CAIRO_STATUS_SUCCESS;
+	goto destroy;
+    }
+
+    /* TODO: require unmap_image != NULL */
+    if (surface->backend->unmap_image &&
+	! _cairo_image_surface_is_clone (image))
+    {
+	status = surface->backend->unmap_image (surface, image);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    _cairo_pattern_init_for_surface (&pattern, &image->base);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+
+    /* We have to apply the translate from map_to_image's extents.x and .y */
+    cairo_matrix_init_translate (&pattern.base.matrix,
+				 image->base.device_transform.x0,
+				 image->base.device_transform.y0);
+
+    /* And we also have to clip the operation to the image's extents */
+    extents.x = image->base.device_transform_inverse.x0;
+    extents.y = image->base.device_transform_inverse.y0;
+    extents.width  = image->width;
+    extents.height = image->height;
+    clip = _cairo_clip_intersect_rectangle (NULL, &extents);
+
+    status = _cairo_surface_paint (surface,
+				   CAIRO_OPERATOR_SOURCE,
+				   &pattern.base,
+				   clip);
+
+    _cairo_pattern_fini (&pattern.base);
+    _cairo_clip_destroy (clip);
+
+destroy:
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return status;
+}
+
+/**
+ * cairo_surface_map_to_image:
+ * @surface: an existing surface used to extract the image from
+ * @extents: limit the extraction to an rectangular region
+ *
+ * Returns an image surface that is the most efficient mechanism for
+ * modifying the backing store of the target surface. The region retrieved
+ * may be limited to the @extents or %NULL for the whole surface
+ *
+ * Note, the use of the original surface as a target or source whilst
+ * it is mapped is undefined. The result of mapping the surface
+ * multiple times is undefined. Calling cairo_surface_destroy() or
+ * cairo_surface_finish() on the resulting image surface results in
+ * undefined behavior. Changing the device transform of the image
+ * surface or of @surface before the image surface is unmapped results
+ * in undefined behavior.
+ *
+ * Return value: a pointer to the newly allocated image surface. The caller
+ * must use cairo_surface_unmap_image() to destroy this image surface.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if @other is already in an error state
+ * or any other error occurs. If the returned pointer does not have an
+ * error status, it is guaranteed to be an image surface whose format
+ * is not %CAIRO_FORMAT_INVALID.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_surface_map_to_image (cairo_surface_t  *surface,
+			    const cairo_rectangle_int_t *extents)
+{
+    cairo_rectangle_int_t rect;
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return _cairo_surface_create_in_error (surface->status);
+    if (unlikely (surface->finished))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    if (extents == NULL) {
+	if (unlikely (! surface->backend->get_extents (surface, &rect)))
+	    return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_SIZE);
+
+	extents = &rect;
+    } else {
+	cairo_rectangle_int_t surface_extents;
+
+	/* If this surface is bounded, we can't map parts
+	 * that are outside of it. */
+	if (likely (surface->backend->get_extents (surface, &surface_extents))) {
+	    if (unlikely (! _cairo_rectangle_contains_rectangle (&surface_extents, extents)))
+		return _cairo_surface_create_in_error (CAIRO_STATUS_INVALID_SIZE);
+	}
+    }
+
+    image = _cairo_surface_map_to_image (surface, extents);
+
+    status = image->base.status;
+    if (unlikely (status)) {
+	cairo_surface_destroy (&image->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    if (image->format == CAIRO_FORMAT_INVALID) {
+	cairo_surface_destroy (&image->base);
+	image = _cairo_image_surface_clone_subimage (surface, extents);
+    }
+
+    return &image->base;
+}
+
+/**
+ * cairo_surface_unmap_image:
+ * @surface: the surface passed to cairo_surface_map_to_image().
+ * @image: the currently mapped image
+ *
+ * Unmaps the image surface as returned from #cairo_surface_map_to_image().
+ *
+ * The content of the image will be uploaded to the target surface.
+ * Afterwards, the image is destroyed.
+ *
+ * Using an image surface which wasn't returned by cairo_surface_map_to_image()
+ * results in undefined behavior.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_surface_unmap_image (cairo_surface_t *surface,
+			   cairo_surface_t *image)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (unlikely (surface->status)) {
+	status = surface->status;
+	goto error;
+    }
+    if (unlikely (surface->finished)) {
+	status = _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+	goto error;
+    }
+    if (unlikely (image->status)) {
+	status = image->status;
+	goto error;
+    }
+    if (unlikely (image->finished)) {
+	status = _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+	goto error;
+    }
+    if (unlikely (! _cairo_surface_is_image (image))) {
+	status = _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	goto error;
+    }
+
+    status = _cairo_surface_unmap_image (surface,
+					 (cairo_image_surface_t *) image);
+    if (unlikely (status))
+	_cairo_surface_set_error (surface, status);
+
+    return;
+
+error:
+    _cairo_surface_set_error (surface, status);
+    cairo_surface_finish (image);
+    cairo_surface_destroy (image);
+}
+
+cairo_surface_t *
+_cairo_surface_create_scratch (cairo_surface_t	 *other,
+			       cairo_content_t	  content,
+			       int		  width,
+			       int		  height,
+			       const cairo_color_t *color)
+{
+    cairo_surface_t *surface;
+    cairo_status_t status;
+    cairo_solid_pattern_t pattern;
+
+    if (unlikely (other->status))
+	return _cairo_surface_create_in_error (other->status);
+
+    surface = NULL;
+    if (other->backend->create_similar)
+	surface = other->backend->create_similar (other, content, width, height);
+    if (surface == NULL)
+	surface = cairo_surface_create_similar_image (other,
+						      _cairo_format_from_content (content),
+						      width, height);
+
+    if (unlikely (surface->status))
+	return surface;
+
+    _cairo_surface_copy_similar_properties (surface, other);
+
+    if (unlikely (surface->status))
+	return surface;
+
+    if (color) {
+	_cairo_pattern_init_solid (&pattern, color);
+	status = _cairo_surface_paint (surface,
+				       color == CAIRO_COLOR_TRANSPARENT ?
+				       CAIRO_OPERATOR_CLEAR : CAIRO_OPERATOR_SOURCE,
+				       &pattern.base, NULL);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (surface);
+	    surface = _cairo_surface_create_in_error (status);
+	}
+    }
+
+    return surface;
+}
+
+/**
+ * cairo_surface_reference:
+ * @surface: a #cairo_surface_t
+ *
+ * Increases the reference count on @surface by one. This prevents
+ * @surface from being destroyed until a matching call to
+ * cairo_surface_destroy() is made.
+ *
+ * Use cairo_surface_get_reference_count() to get the number of
+ * references to a #cairo_surface_t.
+ *
+ * Return value: the referenced #cairo_surface_t.
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_surface_reference (cairo_surface_t *surface)
+{
+    if (surface == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	return surface;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count));
+
+    _cairo_reference_count_inc (&surface->ref_count);
+
+    return surface;
+}
+slim_hidden_def (cairo_surface_reference);
+
+/**
+ * cairo_surface_destroy:
+ * @surface: a #cairo_surface_t
+ *
+ * Decreases the reference count on @surface by one. If the result is
+ * zero, then @surface and all associated resources are freed.  See
+ * cairo_surface_reference().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_destroy (cairo_surface_t *surface)
+{
+    if (surface == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&surface->ref_count))
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (! surface->finished) {
+	_cairo_surface_finish_snapshots (surface);
+	/* We may have been referenced by a snapshot prior to have
+	 * detaching it with the copy-on-write.
+	 */
+	if (CAIRO_REFERENCE_COUNT_GET_VALUE (&surface->ref_count))
+	    return;
+
+	_cairo_surface_finish (surface);
+    }
+
+    if (surface->damage)
+	_cairo_damage_destroy (surface->damage);
+
+    _cairo_user_data_array_fini (&surface->user_data);
+    _cairo_user_data_array_fini (&surface->mime_data);
+
+    if (surface->owns_device)
+        cairo_device_destroy (surface->device);
+
+    assert (surface->snapshot_of == NULL);
+    assert (! _cairo_surface_has_snapshots (surface));
+    /* paranoid check that nobody took a reference whilst finishing */
+    assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count));
+
+    free (surface);
+}
+slim_hidden_def(cairo_surface_destroy);
+
+/**
+ * cairo_surface_get_reference_count:
+ * @surface: a #cairo_surface_t
+ *
+ * Returns the current reference count of @surface.
+ *
+ * Return value: the current reference count of @surface.  If the
+ * object is a nil object, 0 will be returned.
+ *
+ * Since: 1.4
+ **/
+unsigned int
+cairo_surface_get_reference_count (cairo_surface_t *surface)
+{
+    if (surface == NULL ||
+	    CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	return 0;
+
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&surface->ref_count);
+}
+
+static void
+_cairo_surface_finish_snapshots (cairo_surface_t *surface)
+{
+    cairo_status_t status;
+
+    /* update the snapshots *before* we declare the surface as finished */
+    surface->_finishing = TRUE;
+    status = _cairo_surface_flush (surface, 0);
+    (void) status;
+}
+
+static void
+_cairo_surface_finish (cairo_surface_t *surface)
+{
+    cairo_status_t status;
+
+    /* call finish even if in error mode */
+    if (surface->backend->finish) {
+	status = surface->backend->finish (surface);
+	if (unlikely (status))
+	    _cairo_surface_set_error (surface, status);
+    }
+
+    surface->finished = TRUE;
+
+    assert (surface->snapshot_of == NULL);
+    assert (!_cairo_surface_has_snapshots (surface));
+}
+
+/**
+ * cairo_surface_finish:
+ * @surface: the #cairo_surface_t to finish
+ *
+ * This function finishes the surface and drops all references to
+ * external resources.  For example, for the Xlib backend it means
+ * that cairo will no longer access the drawable, which can be freed.
+ * After calling cairo_surface_finish() the only valid operations on a
+ * surface are getting and setting user, referencing and
+ * destroying, and flushing and finishing it.
+ * Further drawing to the surface will not affect the
+ * surface but will instead trigger a %CAIRO_STATUS_SURFACE_FINISHED
+ * error.
+ *
+ * When the last call to cairo_surface_destroy() decreases the
+ * reference count to zero, cairo will call cairo_surface_finish() if
+ * it hasn't been called already, before freeing the resources
+ * associated with the surface.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_finish (cairo_surface_t *surface)
+{
+    if (surface == NULL)
+	return;
+
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	return;
+
+    if (surface->finished)
+	return;
+
+    /* We have to be careful when decoupling potential reference cycles */
+    cairo_surface_reference (surface);
+
+    _cairo_surface_finish_snapshots (surface);
+    /* XXX need to block and wait for snapshot references */
+    _cairo_surface_finish (surface);
+
+    cairo_surface_destroy (surface);
+}
+slim_hidden_def (cairo_surface_finish);
+
+/**
+ * _cairo_surface_release_device_reference:
+ * @surface: a #cairo_surface_t
+ *
+ * This function makes @surface release the reference to its device. The
+ * function is intended to be used for avoiding cycling references for
+ * surfaces that are owned by their device, for example cache surfaces.
+ * Note that the @surface will still assume that the device is available.
+ * So it is the caller's responsibility to ensure the device stays around
+ * until the @surface is destroyed. Just calling cairo_surface_finish() is
+ * not enough.
+ **/
+void
+_cairo_surface_release_device_reference (cairo_surface_t *surface)
+{
+    assert (surface->owns_device);
+
+    cairo_device_destroy (surface->device);
+    surface->owns_device = FALSE;
+}
+
+/**
+ * cairo_surface_get_user_data:
+ * @surface: a #cairo_surface_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Return user data previously attached to @surface using the specified
+ * key.  If no user data has been attached with the given key this
+ * function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ *
+ * Since: 1.0
+ **/
+void *
+cairo_surface_get_user_data (cairo_surface_t		 *surface,
+			     const cairo_user_data_key_t *key)
+{
+    /* Prevent reads of the array during teardown */
+    if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count))
+	return NULL;
+
+    return _cairo_user_data_array_get_data (&surface->user_data, key);
+}
+
+/**
+ * cairo_surface_set_user_data:
+ * @surface: a #cairo_surface_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach to the surface
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * surface is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attach user data to @surface.  To remove user data from a surface,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_surface_set_user_data (cairo_surface_t		 *surface,
+			     const cairo_user_data_key_t *key,
+			     void			 *user_data,
+			     cairo_destroy_func_t	 destroy)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	return surface->status;
+
+    if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    return _cairo_user_data_array_set_data (&surface->user_data,
+					    key, user_data, destroy);
+}
+
+/**
+ * cairo_surface_get_mime_data:
+ * @surface: a #cairo_surface_t
+ * @mime_type: the mime type of the image data
+ * @data: the image data to attached to the surface
+ * @length: the length of the image data
+ *
+ * Return mime data previously attached to @surface using the
+ * specified mime type.  If no data has been attached with the given
+ * mime type, @data is set %NULL.
+ *
+ * Since: 1.10
+ **/
+void
+cairo_surface_get_mime_data (cairo_surface_t		*surface,
+                             const char			*mime_type,
+                             const unsigned char       **data,
+                             unsigned long		*length)
+{
+    cairo_user_data_slot_t *slots;
+    int i, num_slots;
+
+    *data = NULL;
+    *length = 0;
+
+    /* Prevent reads of the array during teardown */
+    if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count))
+	return;
+
+    /* The number of mime-types attached to a surface is usually small,
+     * typically zero. Therefore it is quicker to do a strcmp() against
+     * each key than it is to intern the string (i.e. compute a hash,
+     * search the hash table, and do a final strcmp).
+     */
+    num_slots = surface->mime_data.num_elements;
+    slots = _cairo_array_index (&surface->mime_data, 0);
+    for (i = 0; i < num_slots; i++) {
+	if (slots[i].key != NULL && strcmp ((char *) slots[i].key, mime_type) == 0) {
+	    cairo_mime_data_t *mime_data = slots[i].user_data;
+
+	    *data = mime_data->data;
+	    *length = mime_data->length;
+	    return;
+	}
+    }
+}
+slim_hidden_def (cairo_surface_get_mime_data);
+
+static void
+_cairo_mime_data_destroy (void *ptr)
+{
+    cairo_mime_data_t *mime_data = ptr;
+
+    if (! _cairo_reference_count_dec_and_test (&mime_data->ref_count))
+	return;
+
+    if (mime_data->destroy && mime_data->closure)
+	mime_data->destroy (mime_data->closure);
+
+    free (mime_data);
+}
+
+
+static const char *_cairo_surface_image_mime_types[] = {
+    CAIRO_MIME_TYPE_JPEG,
+    CAIRO_MIME_TYPE_PNG,
+    CAIRO_MIME_TYPE_JP2,
+    CAIRO_MIME_TYPE_JBIG2,
+    CAIRO_MIME_TYPE_CCITT_FAX,
+};
+
+cairo_bool_t
+_cairo_surface_has_mime_image (cairo_surface_t *surface)
+{
+    cairo_user_data_slot_t *slots;
+    int i, j, num_slots;
+
+    /* Prevent reads of the array during teardown */
+    if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count))
+	return FALSE;
+
+    /* The number of mime-types attached to a surface is usually small,
+     * typically zero. Therefore it is quicker to do a strcmp() against
+     * each key than it is to intern the string (i.e. compute a hash,
+     * search the hash table, and do a final strcmp).
+     */
+    num_slots = surface->mime_data.num_elements;
+    slots = _cairo_array_index (&surface->mime_data, 0);
+    for (i = 0; i < num_slots; i++) {
+	if (slots[i].key != NULL) {
+	    for (j = 0; j < ARRAY_LENGTH (_cairo_surface_image_mime_types); j++) {
+		if (strcmp ((char *) slots[i].key, _cairo_surface_image_mime_types[j]) == 0)
+		    return TRUE;
+	    }
+	}
+    }
+
+    return FALSE;
+}
+
+/**
+ * CAIRO_MIME_TYPE_CCITT_FAX:
+ *
+ * Group 3 or Group 4 CCITT facsimile encoding (International
+ * Telecommunication Union, Recommendations T.4 and T.6.)
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_CCITT_FAX_PARAMS:
+ *
+ * Decode parameters for Group 3 or Group 4 CCITT facsimile encoding.
+ * See [CCITT Fax Images][ccitt].
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_EPS:
+ *
+ * Encapsulated PostScript file.
+ * [Encapsulated PostScript File Format Specification](http://wwwimages.adobe.com/content/dam/Adobe/endevnet/postscript/pdfs/5002.EPSF_Spec.pdf)
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_EPS_PARAMS:
+ *
+ * Embedding parameters Encapsulated PostScript data.
+ * See [Embedding EPS files][eps].
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_JBIG2:
+ *
+ * Joint Bi-level Image Experts Group image coding standard (ISO/IEC 11544).
+ *
+ * Since: 1.14
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_JBIG2_GLOBAL:
+ *
+ * Joint Bi-level Image Experts Group image coding standard (ISO/IEC 11544) global segment.
+ *
+ * Since: 1.14
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID:
+ *
+ * An unique identifier shared by a JBIG2 global segment and all JBIG2 images
+ * that depend on the global segment.
+ *
+ * Since: 1.14
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_JP2:
+ *
+ * The Joint Photographic Experts Group (JPEG) 2000 image coding standard (ISO/IEC 15444-1).
+ *
+ * Since: 1.10
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_JPEG:
+ *
+ * The Joint Photographic Experts Group (JPEG) image coding standard (ISO/IEC 10918-1).
+ *
+ * Since: 1.10
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_PNG:
+ *
+ * The Portable Network Graphics image file format (ISO/IEC 15948).
+ *
+ * Since: 1.10
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_URI:
+ *
+ * URI for an image file (unofficial MIME type).
+ *
+ * Since: 1.10
+ **/
+
+/**
+ * CAIRO_MIME_TYPE_UNIQUE_ID:
+ *
+ * Unique identifier for a surface (cairo specific MIME type). All surfaces with
+ * the same unique identifier will only be embedded once.
+ *
+ * Since: 1.12
+ **/
+
+/**
+ * cairo_surface_set_mime_data:
+ * @surface: a #cairo_surface_t
+ * @mime_type: the MIME type of the image data
+ * @data: the image data to attach to the surface
+ * @length: the length of the image data
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * surface is destroyed or when new image data is attached using the
+ * same mime type.
+ * @closure: the data to be passed to the @destroy notifier
+ *
+ * Attach an image in the format @mime_type to @surface. To remove
+ * the data from a surface, call this function with same mime type
+ * and %NULL for @data.
+ *
+ * The attached image (or filename) data can later be used by backends
+ * which support it (currently: PDF, PS, SVG and Win32 Printing
+ * surfaces) to emit this data instead of making a snapshot of the
+ * @surface.  This approach tends to be faster and requires less
+ * memory and disk space.
+ *
+ * The recognized MIME types are the following: %CAIRO_MIME_TYPE_JPEG,
+ * %CAIRO_MIME_TYPE_PNG, %CAIRO_MIME_TYPE_JP2, %CAIRO_MIME_TYPE_URI,
+ * %CAIRO_MIME_TYPE_UNIQUE_ID, %CAIRO_MIME_TYPE_JBIG2,
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL, %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID,
+ * %CAIRO_MIME_TYPE_CCITT_FAX, %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS.
+ *
+ * See corresponding backend surface docs for details about which MIME
+ * types it can handle. Caution: the associated MIME data will be
+ * discarded if you draw on the surface afterwards. Use this function
+ * with care.
+ *
+ * Even if a backend supports a MIME type, that does not mean cairo
+ * will always be able to use the attached MIME data. For example, if
+ * the backend does not natively support the compositing operation used
+ * to apply the MIME data to the backend. In that case, the MIME data
+ * will be ignored. Therefore, to apply an image in all cases, it is best
+ * to create an image surface which contains the decoded image data and
+ * then attach the MIME data to that. This ensures the image will always
+ * be used while still allowing the MIME data to be used whenever
+ * possible.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.10
+ **/
+cairo_status_t
+cairo_surface_set_mime_data (cairo_surface_t		*surface,
+                             const char			*mime_type,
+                             const unsigned char	*data,
+                             unsigned long		 length,
+			     cairo_destroy_func_t	 destroy,
+			     void			*closure)
+{
+    cairo_status_t status;
+    cairo_mime_data_t *mime_data;
+
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&surface->ref_count))
+	return surface->status;
+
+    if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    status = _cairo_intern_string (&mime_type, -1);
+    if (unlikely (status))
+	return _cairo_surface_set_error (surface, status);
+
+    if (data != NULL) {
+	mime_data = _cairo_malloc (sizeof (cairo_mime_data_t));
+	if (unlikely (mime_data == NULL))
+	    return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+	CAIRO_REFERENCE_COUNT_INIT (&mime_data->ref_count, 1);
+
+	mime_data->data = (unsigned char *) data;
+	mime_data->length = length;
+	mime_data->destroy = destroy;
+	mime_data->closure = closure;
+    } else
+	mime_data = NULL;
+
+    status = _cairo_user_data_array_set_data (&surface->mime_data,
+					      (cairo_user_data_key_t *) mime_type,
+					      mime_data,
+					      _cairo_mime_data_destroy);
+    if (unlikely (status)) {
+	free (mime_data);
+
+	return _cairo_surface_set_error (surface, status);
+    }
+
+    surface->is_clear = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+slim_hidden_def (cairo_surface_set_mime_data);
+
+/**
+ * cairo_surface_supports_mime_type:
+ * @surface: a #cairo_surface_t
+ * @mime_type: the mime type
+ *
+ * Return whether @surface supports @mime_type.
+ *
+ * Return value: %TRUE if @surface supports
+ *               @mime_type, %FALSE otherwise
+ *
+ * Since: 1.12
+ **/
+cairo_bool_t
+cairo_surface_supports_mime_type (cairo_surface_t		*surface,
+				  const char			*mime_type)
+{
+    const char **types;
+
+    if (unlikely (surface->status))
+	return FALSE;
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return FALSE;
+    }
+
+    if (surface->backend->get_supported_mime_types) {
+	types = surface->backend->get_supported_mime_types (surface);
+	if (types) {
+	    while (*types) {
+		if (strcmp (*types, mime_type) == 0)
+		    return TRUE;
+		types++;
+	    }
+	}
+    }
+
+    return FALSE;
+}
+slim_hidden_def (cairo_surface_supports_mime_type);
+
+static void
+_cairo_mime_data_reference (const void *key, void *elt, void *closure)
+{
+    cairo_mime_data_t *mime_data = elt;
+
+    _cairo_reference_count_inc (&mime_data->ref_count);
+}
+
+cairo_status_t
+_cairo_surface_copy_mime_data (cairo_surface_t *dst,
+			       cairo_surface_t *src)
+{
+    cairo_status_t status;
+
+    if (dst->status)
+	return dst->status;
+
+    if (src->status)
+	return _cairo_surface_set_error (dst, src->status);
+
+    /* first copy the mime-data, discarding any already set on dst */
+    status = _cairo_user_data_array_copy (&dst->mime_data, &src->mime_data);
+    if (unlikely (status))
+	return _cairo_surface_set_error (dst, status);
+
+    /* now increment the reference counters for the copies */
+    _cairo_user_data_array_foreach (&dst->mime_data,
+				    _cairo_mime_data_reference,
+				    NULL);
+
+    dst->is_clear = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_surface_set_font_options:
+ * @surface: a #cairo_surface_t
+ * @options: a #cairo_font_options_t object that contains the
+ *   options to use for this surface instead of backend's default
+ *   font options.
+ *
+ * Sets the default font rendering options for the surface.
+ * This is useful to correctly propagate default font options when
+ * falling back to an image surface in a backend implementation.
+ * This affects the options returned in cairo_surface_get_font_options().
+ *
+ * If @options is %NULL the surface options are reset to those of
+ * the backend default.
+ **/
+void
+_cairo_surface_set_font_options (cairo_surface_t       *surface,
+				 cairo_font_options_t  *options)
+{
+    if (surface->status)
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (surface->finished) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (options) {
+	surface->has_font_options = TRUE;
+	_cairo_font_options_init_copy (&surface->font_options, options);
+    } else {
+	surface->has_font_options = FALSE;
+    }
+}
+
+/**
+ * cairo_surface_get_font_options:
+ * @surface: a #cairo_surface_t
+ * @options: a #cairo_font_options_t object into which to store
+ *   the retrieved options. All existing values are overwritten
+ *
+ * Retrieves the default font rendering options for the surface.
+ * This allows display surfaces to report the correct subpixel order
+ * for rendering on them, print surfaces to disable hinting of
+ * metrics and so forth. The result can then be used with
+ * cairo_scaled_font_create().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_get_font_options (cairo_surface_t       *surface,
+				cairo_font_options_t  *options)
+{
+    if (cairo_font_options_status (options))
+	return;
+
+    if (surface->status) {
+	_cairo_font_options_init_default (options);
+	return;
+    }
+
+    if (! surface->has_font_options) {
+	surface->has_font_options = TRUE;
+
+	_cairo_font_options_init_default (&surface->font_options);
+
+	if (!surface->finished && surface->backend->get_font_options) {
+	    surface->backend->get_font_options (surface, &surface->font_options);
+	}
+    }
+
+    _cairo_font_options_init_copy (options, &surface->font_options);
+}
+slim_hidden_def (cairo_surface_get_font_options);
+
+cairo_status_t
+_cairo_surface_flush (cairo_surface_t *surface, unsigned flags)
+{
+    /* update the current snapshots *before* the user updates the surface */
+    _cairo_surface_detach_snapshots (surface);
+    if (surface->snapshot_of != NULL)
+	_cairo_surface_detach_snapshot (surface);
+    _cairo_surface_detach_mime_data (surface);
+
+    return __cairo_surface_flush (surface, flags);
+}
+
+/**
+ * cairo_surface_flush:
+ * @surface: a #cairo_surface_t
+ *
+ * Do any pending drawing for the surface and also restore any temporary
+ * modifications cairo has made to the surface's state. This function
+ * must be called before switching from drawing on the surface with
+ * cairo to drawing on it directly with native APIs, or accessing its
+ * memory outside of Cairo. If the surface doesn't support direct
+ * access, then this function does nothing.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_flush (cairo_surface_t *surface)
+{
+    cairo_status_t status;
+
+    if (surface->status)
+	return;
+
+    if (surface->finished)
+	return;
+
+    status = _cairo_surface_flush (surface, 0);
+    if (unlikely (status))
+	_cairo_surface_set_error (surface, status);
+}
+slim_hidden_def (cairo_surface_flush);
+
+/**
+ * cairo_surface_mark_dirty:
+ * @surface: a #cairo_surface_t
+ *
+ * Tells cairo that drawing has been done to surface using means other
+ * than cairo, and that cairo should reread any cached areas. Note
+ * that you must call cairo_surface_flush() before doing such drawing.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_mark_dirty (cairo_surface_t *surface)
+{
+    cairo_rectangle_int_t extents;
+
+    if (unlikely (surface->status))
+	return;
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    _cairo_surface_get_extents (surface, &extents);
+    cairo_surface_mark_dirty_rectangle (surface,
+					extents.x, extents.y,
+					extents.width, extents.height);
+}
+slim_hidden_def (cairo_surface_mark_dirty);
+
+/**
+ * cairo_surface_mark_dirty_rectangle:
+ * @surface: a #cairo_surface_t
+ * @x: X coordinate of dirty rectangle
+ * @y: Y coordinate of dirty rectangle
+ * @width: width of dirty rectangle
+ * @height: height of dirty rectangle
+ *
+ * Like cairo_surface_mark_dirty(), but drawing has been done only to
+ * the specified rectangle, so that cairo can retain cached contents
+ * for other parts of the surface.
+ *
+ * Any cached clip set on the surface will be reset by this function,
+ * to make sure that future cairo calls have the clip set that they
+ * expect.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_mark_dirty_rectangle (cairo_surface_t *surface,
+				    int              x,
+				    int              y,
+				    int              width,
+				    int              height)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    /* The application *should* have called cairo_surface_flush() before
+     * modifying the surface independently of cairo (and thus having to
+     * call mark_dirty()). */
+    assert (! _cairo_surface_has_snapshots (surface));
+    assert (! _cairo_surface_has_mime_data (surface));
+
+    surface->is_clear = FALSE;
+    surface->serial++;
+
+    if (surface->damage) {
+	cairo_box_t box;
+
+	box.p1.x = x;
+	box.p1.y = y;
+	box.p2.x = x + width;
+	box.p2.y = y + height;
+
+	surface->damage = _cairo_damage_add_box (surface->damage, &box);
+    }
+
+    if (surface->backend->mark_dirty_rectangle != NULL) {
+	/* XXX: FRAGILE: We're ignoring the scaling component of
+	 * device_transform here. I don't know what the right thing to
+	 * do would actually be if there were some scaling here, but
+	 * we avoid this since device_transfom scaling is not exported
+	 * publicly and mark_dirty is not used internally. */
+	status = surface->backend->mark_dirty_rectangle (surface,
+                                                         x + surface->device_transform.x0,
+                                                         y + surface->device_transform.y0,
+							 width, height);
+
+	if (unlikely (status))
+	    _cairo_surface_set_error (surface, status);
+    }
+}
+slim_hidden_def (cairo_surface_mark_dirty_rectangle);
+
+/**
+ * cairo_surface_set_device_scale:
+ * @surface: a #cairo_surface_t
+ * @x_scale: a scale factor in the X direction
+ * @y_scale: a scale factor in the Y direction
+ *
+ * Sets a scale that is multiplied to the device coordinates determined
+ * by the CTM when drawing to @surface. One common use for this is to
+ * render to very high resolution display devices at a scale factor, so
+ * that code that assumes 1 pixel will be a certain size will still work.
+ * Setting a transformation via cairo_translate() isn't
+ * sufficient to do this, since functions like
+ * cairo_device_to_user() will expose the hidden scale.
+ *
+ * Note that the scale affects drawing to the surface as well as
+ * using the surface in a source pattern.
+ *
+ * Since: 1.14
+ **/
+void
+cairo_surface_set_device_scale (cairo_surface_t *surface,
+				double		 x_scale,
+				double		 y_scale)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status)) {
+	_cairo_surface_set_error (surface, status);
+	return;
+    }
+
+    surface->device_transform.xx = x_scale;
+    surface->device_transform.yy = y_scale;
+    surface->device_transform.xy = 0.0;
+    surface->device_transform.yx = 0.0;
+
+    surface->device_transform_inverse = surface->device_transform;
+    status = cairo_matrix_invert (&surface->device_transform_inverse);
+    /* should always be invertible unless given pathological input */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _cairo_observers_notify (&surface->device_transform_observers, surface);
+}
+slim_hidden_def (cairo_surface_set_device_scale);
+
+/**
+ * cairo_surface_get_device_scale:
+ * @surface: a #cairo_surface_t
+ * @x_scale: the scale in the X direction, in device units
+ * @y_scale: the scale in the Y direction, in device units
+ *
+ * This function returns the previous device offset set by
+ * cairo_surface_set_device_scale().
+ *
+ * Since: 1.14
+ **/
+void
+cairo_surface_get_device_scale (cairo_surface_t *surface,
+				double          *x_scale,
+				double          *y_scale)
+{
+    if (x_scale)
+	*x_scale = surface->device_transform.xx;
+    if (y_scale)
+	*y_scale = surface->device_transform.yy;
+}
+slim_hidden_def (cairo_surface_get_device_scale);
+
+/**
+ * cairo_surface_set_device_offset:
+ * @surface: a #cairo_surface_t
+ * @x_offset: the offset in the X direction, in device units
+ * @y_offset: the offset in the Y direction, in device units
+ *
+ * Sets an offset that is added to the device coordinates determined
+ * by the CTM when drawing to @surface. One use case for this function
+ * is when we want to create a #cairo_surface_t that redirects drawing
+ * for a portion of an onscreen surface to an offscreen surface in a
+ * way that is completely invisible to the user of the cairo
+ * API. Setting a transformation via cairo_translate() isn't
+ * sufficient to do this, since functions like
+ * cairo_device_to_user() will expose the hidden offset.
+ *
+ * Note that the offset affects drawing to the surface as well as
+ * using the surface in a source pattern.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_surface_set_device_offset (cairo_surface_t *surface,
+				 double           x_offset,
+				 double           y_offset)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status)) {
+	_cairo_surface_set_error (surface, status);
+	return;
+    }
+
+    surface->device_transform.x0 = x_offset;
+    surface->device_transform.y0 = y_offset;
+
+    surface->device_transform_inverse = surface->device_transform;
+    status = cairo_matrix_invert (&surface->device_transform_inverse);
+    /* should always be invertible unless given pathological input */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _cairo_observers_notify (&surface->device_transform_observers, surface);
+}
+slim_hidden_def (cairo_surface_set_device_offset);
+
+/**
+ * cairo_surface_get_device_offset:
+ * @surface: a #cairo_surface_t
+ * @x_offset: the offset in the X direction, in device units
+ * @y_offset: the offset in the Y direction, in device units
+ *
+ * This function returns the previous device offset set by
+ * cairo_surface_set_device_offset().
+ *
+ * Since: 1.2
+ **/
+void
+cairo_surface_get_device_offset (cairo_surface_t *surface,
+				 double          *x_offset,
+				 double          *y_offset)
+{
+    if (x_offset)
+	*x_offset = surface->device_transform.x0;
+    if (y_offset)
+	*y_offset = surface->device_transform.y0;
+}
+slim_hidden_def (cairo_surface_get_device_offset);
+
+/**
+ * cairo_surface_set_fallback_resolution:
+ * @surface: a #cairo_surface_t
+ * @x_pixels_per_inch: horizontal setting for pixels per inch
+ * @y_pixels_per_inch: vertical setting for pixels per inch
+ *
+ * Set the horizontal and vertical resolution for image fallbacks.
+ *
+ * When certain operations aren't supported natively by a backend,
+ * cairo will fallback by rendering operations to an image and then
+ * overlaying that image onto the output. For backends that are
+ * natively vector-oriented, this function can be used to set the
+ * resolution used for these image fallbacks, (larger values will
+ * result in more detailed images, but also larger file sizes).
+ *
+ * Some examples of natively vector-oriented backends are the ps, pdf,
+ * and svg backends.
+ *
+ * For backends that are natively raster-oriented, image fallbacks are
+ * still possible, but they are always performed at the native
+ * device resolution. So this function has no effect on those
+ * backends.
+ *
+ * Note: The fallback resolution only takes effect at the time of
+ * completing a page (with cairo_show_page() or cairo_copy_page()) so
+ * there is currently no way to have more than one fallback resolution
+ * in effect on a single page.
+ *
+ * The default fallback resoultion is 300 pixels per inch in both
+ * dimensions.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_surface_set_fallback_resolution (cairo_surface_t	*surface,
+				       double		 x_pixels_per_inch,
+				       double		 y_pixels_per_inch)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (x_pixels_per_inch <= 0 || y_pixels_per_inch <= 0) {
+	/* XXX Could delay raising the error until we fallback, but throwing
+	 * the error here means that we can catch the real culprit.
+	 */
+	_cairo_surface_set_error (surface, CAIRO_STATUS_INVALID_MATRIX);
+	return;
+    }
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status)) {
+	_cairo_surface_set_error (surface, status);
+	return;
+    }
+
+    surface->x_fallback_resolution = x_pixels_per_inch;
+    surface->y_fallback_resolution = y_pixels_per_inch;
+}
+slim_hidden_def (cairo_surface_set_fallback_resolution);
+
+/**
+ * cairo_surface_get_fallback_resolution:
+ * @surface: a #cairo_surface_t
+ * @x_pixels_per_inch: horizontal pixels per inch
+ * @y_pixels_per_inch: vertical pixels per inch
+ *
+ * This function returns the previous fallback resolution set by
+ * cairo_surface_set_fallback_resolution(), or default fallback
+ * resolution if never set.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_surface_get_fallback_resolution (cairo_surface_t	*surface,
+				       double		*x_pixels_per_inch,
+				       double		*y_pixels_per_inch)
+{
+    if (x_pixels_per_inch)
+	*x_pixels_per_inch = surface->x_fallback_resolution;
+    if (y_pixels_per_inch)
+	*y_pixels_per_inch = surface->y_fallback_resolution;
+}
+
+cairo_bool_t
+_cairo_surface_has_device_transform (cairo_surface_t *surface)
+{
+    return ! _cairo_matrix_is_identity (&surface->device_transform);
+}
+
+/**
+ * _cairo_surface_acquire_source_image:
+ * @surface: a #cairo_surface_t
+ * @image_out: location to store a pointer to an image surface that
+ *    has identical contents to @surface. This surface could be @surface
+ *    itself, a surface held internal to @surface, or it could be a new
+ *    surface with a copy of the relevant portion of @surface.
+ * @image_extra: location to store image specific backend data
+ *
+ * Gets an image surface to use when drawing as a fallback when drawing with
+ * @surface as a source. _cairo_surface_release_source_image() must be called
+ * when finished.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if an image was stored in @image_out.
+ * %CAIRO_INT_STATUS_UNSUPPORTED if an image cannot be retrieved for the specified
+ * surface. Or %CAIRO_STATUS_NO_MEMORY.
+ **/
+cairo_status_t
+_cairo_surface_acquire_source_image (cairo_surface_t         *surface,
+				     cairo_image_surface_t  **image_out,
+				     void                   **image_extra)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return surface->status;
+
+    assert (!surface->finished);
+
+    if (surface->backend->acquire_source_image == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = surface->backend->acquire_source_image (surface,
+						     image_out, image_extra);
+    if (unlikely (status))
+	return _cairo_surface_set_error (surface, status);
+
+    _cairo_debug_check_image_surface_is_defined (&(*image_out)->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_surface_default_acquire_source_image (void                    *_surface,
+					     cairo_image_surface_t  **image_out,
+					     void                   **image_extra)
+{
+    cairo_surface_t *surface = _surface;
+    cairo_rectangle_int_t extents;
+
+    if (unlikely (! surface->backend->get_extents (surface, &extents)))
+	return _cairo_error (CAIRO_STATUS_INVALID_SIZE);
+
+    *image_out = _cairo_surface_map_to_image (surface, &extents);
+    *image_extra = NULL;
+    return (*image_out)->base.status;
+}
+
+/**
+ * _cairo_surface_release_source_image:
+ * @surface: a #cairo_surface_t
+ * @image_extra: same as return from the matching _cairo_surface_acquire_source_image()
+ *
+ * Releases any resources obtained with _cairo_surface_acquire_source_image()
+ **/
+void
+_cairo_surface_release_source_image (cairo_surface_t        *surface,
+				     cairo_image_surface_t  *image,
+				     void                   *image_extra)
+{
+    assert (!surface->finished);
+
+    if (surface->backend->release_source_image)
+	surface->backend->release_source_image (surface, image, image_extra);
+}
+
+void
+_cairo_surface_default_release_source_image (void                   *surface,
+					     cairo_image_surface_t  *image,
+					     void                   *image_extra)
+{
+    cairo_status_t ignored;
+
+    ignored = _cairo_surface_unmap_image (surface, image);
+    (void)ignored;
+}
+
+
+cairo_surface_t *
+_cairo_surface_get_source (cairo_surface_t *surface,
+			   cairo_rectangle_int_t *extents)
+{
+    assert (surface->backend->source);
+    return surface->backend->source (surface, extents);
+}
+
+cairo_surface_t *
+_cairo_surface_default_source (void *surface,
+			       cairo_rectangle_int_t *extents)
+{
+    if (extents)
+	_cairo_surface_get_extents(surface, extents);
+    return surface;
+}
+
+static cairo_status_t
+_pattern_has_error (const cairo_pattern_t *pattern)
+{
+    const cairo_surface_pattern_t *spattern;
+
+    if (unlikely (pattern->status))
+	return pattern->status;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_STATUS_SUCCESS;
+
+    spattern = (const cairo_surface_pattern_t *) pattern;
+    if (unlikely (spattern->surface->status))
+	return spattern->surface->status;
+
+    if (unlikely (spattern->surface->finished))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+nothing_to_do (cairo_surface_t *surface,
+	       cairo_operator_t op,
+	       const cairo_pattern_t *source)
+{
+    if (_cairo_pattern_is_clear (source)) {
+	if (op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD)
+	    return TRUE;
+
+	if (op == CAIRO_OPERATOR_SOURCE)
+	    op = CAIRO_OPERATOR_CLEAR;
+    }
+
+    if (op == CAIRO_OPERATOR_CLEAR && surface->is_clear)
+	return TRUE;
+
+    if (op == CAIRO_OPERATOR_ATOP && (surface->content & CAIRO_CONTENT_COLOR) ==0)
+	return TRUE;
+
+    return FALSE;
+}
+
+cairo_status_t
+_cairo_surface_paint (cairo_surface_t		*surface,
+		      cairo_operator_t		 op,
+		      const cairo_pattern_t	*source,
+		      const cairo_clip_t	*clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _pattern_has_error (source);
+    if (unlikely (status))
+	return status;
+
+    if (nothing_to_do (surface, op, source))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status))
+	return status;
+
+    status = surface->backend->paint (surface, op, source, clip);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	surface->is_clear = op == CAIRO_OPERATOR_CLEAR && clip == NULL;
+	surface->serial++;
+    }
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+cairo_status_t
+_cairo_surface_mask (cairo_surface_t		*surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     const cairo_pattern_t	*mask,
+		     const cairo_clip_t		*clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* If the mask is blank, this is just an expensive no-op */
+    if (_cairo_pattern_is_clear (mask) &&
+	_cairo_operator_bounded_by_mask (op))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = _pattern_has_error (source);
+    if (unlikely (status))
+	return status;
+
+    status = _pattern_has_error (mask);
+    if (unlikely (status))
+	return status;
+
+    if (nothing_to_do (surface, op, source))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status))
+	return status;
+
+    status = surface->backend->mask (surface, op, source, mask, clip);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	surface->is_clear = FALSE;
+	surface->serial++;
+    }
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+cairo_status_t
+_cairo_surface_fill_stroke (cairo_surface_t	    *surface,
+			    cairo_operator_t	     fill_op,
+			    const cairo_pattern_t   *fill_source,
+			    cairo_fill_rule_t	     fill_rule,
+			    double		     fill_tolerance,
+			    cairo_antialias_t	     fill_antialias,
+			    cairo_path_fixed_t	    *path,
+			    cairo_operator_t	     stroke_op,
+			    const cairo_pattern_t   *stroke_source,
+			    const cairo_stroke_style_t    *stroke_style,
+			    const cairo_matrix_t	    *stroke_ctm,
+			    const cairo_matrix_t	    *stroke_ctm_inverse,
+			    double		     stroke_tolerance,
+			    cairo_antialias_t	     stroke_antialias,
+			    const cairo_clip_t	    *clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->is_clear &&
+	fill_op == CAIRO_OPERATOR_CLEAR &&
+	stroke_op == CAIRO_OPERATOR_CLEAR)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = _pattern_has_error (fill_source);
+    if (unlikely (status))
+	return status;
+
+    status = _pattern_has_error (stroke_source);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status))
+	return status;
+
+    if (surface->backend->fill_stroke) {
+	cairo_matrix_t dev_ctm = *stroke_ctm;
+	cairo_matrix_t dev_ctm_inverse = *stroke_ctm_inverse;
+
+	status = surface->backend->fill_stroke (surface,
+						fill_op, fill_source, fill_rule,
+						fill_tolerance, fill_antialias,
+						path,
+						stroke_op, stroke_source,
+						stroke_style,
+						&dev_ctm, &dev_ctm_inverse,
+						stroke_tolerance, stroke_antialias,
+						clip);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    goto FINISH;
+    }
+
+    status = _cairo_surface_fill (surface, fill_op, fill_source, path,
+				  fill_rule, fill_tolerance, fill_antialias,
+				  clip);
+    if (unlikely (status))
+	goto FINISH;
+
+    status = _cairo_surface_stroke (surface, stroke_op, stroke_source, path,
+				    stroke_style, stroke_ctm, stroke_ctm_inverse,
+				    stroke_tolerance, stroke_antialias,
+				    clip);
+    if (unlikely (status))
+	goto FINISH;
+
+  FINISH:
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	surface->is_clear = FALSE;
+	surface->serial++;
+    }
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+cairo_status_t
+_cairo_surface_stroke (cairo_surface_t			*surface,
+		       cairo_operator_t			 op,
+		       const cairo_pattern_t		*source,
+		       const cairo_path_fixed_t		*path,
+		       const cairo_stroke_style_t	*stroke_style,
+		       const cairo_matrix_t		*ctm,
+		       const cairo_matrix_t		*ctm_inverse,
+		       double				 tolerance,
+		       cairo_antialias_t		 antialias,
+		       const cairo_clip_t		*clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _pattern_has_error (source);
+    if (unlikely (status))
+	return status;
+
+    if (nothing_to_do (surface, op, source))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status))
+	return status;
+
+    status = surface->backend->stroke (surface, op, source,
+				       path, stroke_style,
+				       ctm, ctm_inverse,
+				       tolerance, antialias,
+				       clip);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	surface->is_clear = FALSE;
+	surface->serial++;
+    }
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+cairo_status_t
+_cairo_surface_fill (cairo_surface_t		*surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	 *source,
+		     const cairo_path_fixed_t	*path,
+		     cairo_fill_rule_t		 fill_rule,
+		     double			 tolerance,
+		     cairo_antialias_t		 antialias,
+		     const cairo_clip_t		*clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _pattern_has_error (source);
+    if (unlikely (status))
+	return status;
+
+    if (nothing_to_do (surface, op, source))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status))
+	return status;
+
+    status = surface->backend->fill (surface, op, source,
+				     path, fill_rule,
+				     tolerance, antialias,
+				     clip);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	surface->is_clear = FALSE;
+	surface->serial++;
+    }
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+/**
+ * cairo_surface_copy_page:
+ * @surface: a #cairo_surface_t
+ *
+ * Emits the current page for backends that support multiple pages,
+ * but doesn't clear it, so that the contents of the current page will
+ * be retained for the next page.  Use cairo_surface_show_page() if you
+ * want to get an empty page after the emission.
+ *
+ * There is a convenience function for this that takes a #cairo_t,
+ * namely cairo_copy_page().
+ *
+ * Since: 1.6
+ **/
+void
+cairo_surface_copy_page (cairo_surface_t *surface)
+{
+    if (unlikely (surface->status))
+	return;
+
+    assert (surface->snapshot_of == NULL);
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, CAIRO_STATUS_SURFACE_FINISHED);
+	return;
+    }
+
+    /* It's fine if some backends don't implement copy_page */
+    if (surface->backend->copy_page == NULL)
+	return;
+
+    _cairo_surface_set_error (surface, surface->backend->copy_page (surface));
+}
+slim_hidden_def (cairo_surface_copy_page);
+
+/**
+ * cairo_surface_show_page:
+ * @surface: a #cairo_Surface_t
+ *
+ * Emits and clears the current page for backends that support multiple
+ * pages.  Use cairo_surface_copy_page() if you don't want to clear the page.
+ *
+ * There is a convenience function for this that takes a #cairo_t,
+ * namely cairo_show_page().
+ *
+ * Since: 1.6
+ **/
+void
+cairo_surface_show_page (cairo_surface_t *surface)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->status))
+	return;
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, CAIRO_STATUS_SURFACE_FINISHED);
+	return;
+    }
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status)) {
+	_cairo_surface_set_error (surface, status);
+	return;
+    }
+
+    /* It's fine if some backends don't implement show_page */
+    if (surface->backend->show_page == NULL)
+	return;
+
+    _cairo_surface_set_error (surface, surface->backend->show_page (surface));
+}
+slim_hidden_def (cairo_surface_show_page);
+
+/**
+ * _cairo_surface_get_extents:
+ * @surface: the #cairo_surface_t to fetch extents for
+ *
+ * This function returns a bounding box for the surface.  The surface
+ * bounds are defined as a region beyond which no rendering will
+ * possibly be recorded, in other words, it is the maximum extent of
+ * potentially usable coordinates.
+ *
+ * For vector surfaces, (PDF, PS, SVG and recording-surfaces), the surface
+ * might be conceived as unbounded, but we force the user to provide a
+ * maximum size at the time of surface_create. So get_extents uses
+ * that size.
+ *
+ * Note: The coordinates returned are in "backend" space rather than
+ * "surface" space. That is, they are relative to the true (0,0)
+ * origin rather than the device_transform origin. This might seem a
+ * bit inconsistent with other #cairo_surface_t interfaces, but all
+ * current callers are within the surface layer where backend space is
+ * desired.
+ *
+ * This behavior would have to be changed is we ever exported a public
+ * variant of this function.
+ **/
+cairo_bool_t
+_cairo_surface_get_extents (cairo_surface_t         *surface,
+			    cairo_rectangle_int_t   *extents)
+{
+    cairo_bool_t bounded;
+
+    if (unlikely (surface->status))
+	goto zero_extents;
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error(surface, CAIRO_STATUS_SURFACE_FINISHED);
+	goto zero_extents;
+    }
+
+    bounded = FALSE;
+    if (surface->backend->get_extents != NULL)
+	bounded = surface->backend->get_extents (surface, extents);
+
+    if (! bounded)
+	_cairo_unbounded_rectangle_init (extents);
+
+    return bounded;
+
+zero_extents:
+    extents->x = extents->y = 0;
+    extents->width = extents->height = 0;
+    return TRUE;
+}
+
+/**
+ * cairo_surface_has_show_text_glyphs:
+ * @surface: a #cairo_surface_t
+ *
+ * Returns whether the surface supports
+ * sophisticated cairo_show_text_glyphs() operations.  That is,
+ * whether it actually uses the provided text and cluster data
+ * to a cairo_show_text_glyphs() call.
+ *
+ * Note: Even if this function returns %FALSE, a
+ * cairo_show_text_glyphs() operation targeted at @surface will
+ * still succeed.  It just will
+ * act like a cairo_show_glyphs() operation.  Users can use this
+ * function to avoid computing UTF-8 text and cluster mapping if the
+ * target surface does not use it.
+ *
+ * Return value: %TRUE if @surface supports
+ *               cairo_show_text_glyphs(), %FALSE otherwise
+ *
+ * Since: 1.8
+ **/
+cairo_bool_t
+cairo_surface_has_show_text_glyphs (cairo_surface_t	    *surface)
+{
+    if (unlikely (surface->status))
+	return FALSE;
+
+    if (unlikely (surface->finished)) {
+	_cairo_surface_set_error (surface, CAIRO_STATUS_SURFACE_FINISHED);
+	return FALSE;
+    }
+
+    if (surface->backend->has_show_text_glyphs)
+	return surface->backend->has_show_text_glyphs (surface);
+    else
+	return surface->backend->show_text_glyphs != NULL;
+}
+slim_hidden_def (cairo_surface_has_show_text_glyphs);
+
+#define GLYPH_CACHE_SIZE 64
+
+static inline cairo_int_status_t
+ensure_scaled_glyph (cairo_scaled_font_t   *scaled_font,
+                     cairo_scaled_glyph_t **glyph_cache,
+                     cairo_glyph_t         *glyph,
+                     cairo_scaled_glyph_t **scaled_glyph)
+{
+    int cache_index;
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+
+    cache_index = glyph->index % GLYPH_CACHE_SIZE;
+    *scaled_glyph = glyph_cache[cache_index];
+    if (*scaled_glyph == NULL || _cairo_scaled_glyph_index (*scaled_glyph) != glyph->index) {
+        status = _cairo_scaled_glyph_lookup (scaled_font,
+                                             glyph->index,
+                                             CAIRO_SCALED_GLYPH_INFO_SURFACE,
+                                             scaled_glyph);
+        if (unlikely (status))
+            status = _cairo_scaled_font_set_error (scaled_font, status);
+
+        glyph_cache[cache_index] = *scaled_glyph;
+    }
+
+    return status;
+}
+
+static inline cairo_int_status_t
+composite_one_color_glyph (cairo_surface_t       *surface,
+                           cairo_operator_t       op,
+                           const cairo_pattern_t *source,
+                           const cairo_clip_t    *clip,
+                           cairo_glyph_t         *glyph,
+                           cairo_scaled_glyph_t  *scaled_glyph)
+{
+    cairo_int_status_t status;
+    cairo_image_surface_t *glyph_surface;
+    cairo_pattern_t *pattern;
+    cairo_matrix_t matrix;
+
+    status = CAIRO_INT_STATUS_SUCCESS;
+
+    glyph_surface = scaled_glyph->color_surface;
+
+    if (glyph_surface->width && glyph_surface->height) {
+        int x, y;
+        /* round glyph locations to the nearest pixels */
+        /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
+	x = _cairo_lround (glyph->x - glyph_surface->base.device_transform.x0);
+	y = _cairo_lround (glyph->y - glyph_surface->base.device_transform.y0);
+
+        pattern = cairo_pattern_create_for_surface ((cairo_surface_t *)glyph_surface);
+        cairo_matrix_init_translate (&matrix, - x, - y);
+        cairo_pattern_set_matrix (pattern, &matrix);
+	if (op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_CLEAR)
+	  status = surface->backend->mask (surface, op, pattern, pattern, clip);
+	else
+	  status = surface->backend->paint (surface, op, pattern, clip);
+        cairo_pattern_destroy (pattern);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+composite_color_glyphs (cairo_surface_t             *surface,
+                        cairo_operator_t             op,
+                        const cairo_pattern_t       *source,
+                        char                        *utf8,
+                        int                         *utf8_len,
+                        cairo_glyph_t               *glyphs,
+                        int                         *num_glyphs,
+                        cairo_text_cluster_t        *clusters,
+	                int			    *num_clusters,
+		        cairo_text_cluster_flags_t   cluster_flags,
+                        cairo_scaled_font_t         *scaled_font,
+                        const cairo_clip_t          *clip)
+{
+    cairo_int_status_t status;
+    int i, j;
+    cairo_scaled_glyph_t *scaled_glyph;
+    int remaining_clusters = 0;
+    int remaining_glyphs = 0;
+    int remaining_bytes = 0;
+    int glyph_pos = 0;
+    int byte_pos = 0;
+    int gp;
+    cairo_scaled_glyph_t *glyph_cache[GLYPH_CACHE_SIZE];
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+
+    status = CAIRO_INT_STATUS_SUCCESS;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+
+    if (clusters) {
+
+        if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+            glyph_pos = *num_glyphs - 1;
+
+        for (i = 0; i < *num_clusters; i++) {
+            cairo_bool_t skip_cluster = FALSE;
+
+            for (j = 0; j < clusters[i].num_glyphs; j++) {
+                if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+                    gp = glyph_pos - j;
+                else
+                    gp = glyph_pos + j;
+
+                status = ensure_scaled_glyph (scaled_font, glyph_cache,
+                                              &glyphs[gp], &scaled_glyph);
+                if (unlikely (status))
+                    goto UNLOCK;
+
+                if ((scaled_glyph->has_info & CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE) == 0) {
+                    skip_cluster = TRUE;
+                    break;
+                }
+            }
+
+            if (skip_cluster) {
+                memmove (utf8 + remaining_bytes, utf8 + byte_pos, clusters[i].num_bytes);
+                remaining_bytes += clusters[i].num_bytes;
+                byte_pos += clusters[i].num_bytes;
+                for (j = 0; j < clusters[i].num_glyphs; j++, remaining_glyphs++) {
+                    if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+                        glyphs[*num_glyphs - 1 - remaining_glyphs] = glyphs[glyph_pos--];
+                    else
+                        glyphs[remaining_glyphs] = glyphs[glyph_pos++];
+                }
+                clusters[remaining_clusters++] = clusters[i];
+                continue;
+            }
+
+            for (j = 0; j < clusters[i].num_glyphs; j++) {
+                if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+                    gp = glyph_pos - j;
+                else
+                    gp = glyph_pos + j;
+
+                status = ensure_scaled_glyph (scaled_font, glyph_cache,
+                                              &glyphs[gp], &scaled_glyph);
+                if (unlikely (status))
+                    goto UNLOCK;
+
+                status = composite_one_color_glyph (surface, op, source, clip,
+                                                    &glyphs[gp], scaled_glyph);
+                if (unlikely (status && status != CAIRO_INT_STATUS_NOTHING_TO_DO))
+                    goto UNLOCK;
+            }
+
+            if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+                glyph_pos -= clusters[i].num_glyphs;
+            else
+                glyph_pos += clusters[i].num_glyphs;
+
+            byte_pos += clusters[i].num_bytes;
+        }
+
+        if (cluster_flags & CAIRO_TEXT_CLUSTER_FLAG_BACKWARD)
+            memmove (utf8, utf8 + *utf8_len - remaining_bytes, remaining_bytes);
+
+        *utf8_len = remaining_bytes;
+        *num_glyphs = remaining_glyphs;
+        *num_clusters = remaining_clusters;
+
+    } else {
+
+       for (glyph_pos = 0; glyph_pos < *num_glyphs; glyph_pos++) {
+           status = ensure_scaled_glyph (scaled_font, glyph_cache,
+                                         &glyphs[glyph_pos], &scaled_glyph);
+           if (unlikely (status))
+               goto UNLOCK;
+
+           if ((scaled_glyph->has_info & CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE) == 0) {
+               glyphs[remaining_glyphs++] = glyphs[glyph_pos];
+               continue;
+           }
+
+           status = composite_one_color_glyph (surface, op, source, clip,
+                                               &glyphs[glyph_pos], scaled_glyph);
+           if (unlikely (status && status != CAIRO_INT_STATUS_NOTHING_TO_DO))
+               goto UNLOCK;
+        }
+
+        *num_glyphs = remaining_glyphs;
+    }
+
+UNLOCK:
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    return status;
+}
+
+/* Note: the backends may modify the contents of the glyph array as long as
+ * they do not return %CAIRO_INT_STATUS_UNSUPPORTED. This makes it possible to
+ * avoid copying the array again and again, and edit it in-place.
+ * Backends are in fact free to use the array as a generic buffer as they
+ * see fit.
+ *
+ * For show_glyphs backend method, and NOT for show_text_glyphs method,
+ * when they do return UNSUPPORTED, they may adjust remaining_glyphs to notify
+ * that they have successfully rendered some of the glyphs (from the beginning
+ * of the array), but not all.  If they don't touch remaining_glyphs, it
+ * defaults to all glyphs.
+ *
+ * See commits 5a9642c5746fd677aed35ce620ce90b1029b1a0c and
+ * 1781e6018c17909311295a9cc74b70500c6b4d0a for the rationale.
+ */
+cairo_status_t
+_cairo_surface_show_text_glyphs (cairo_surface_t	    *surface,
+				 cairo_operator_t	     op,
+				 const cairo_pattern_t	    *source,
+				 const char		    *utf8,
+				 int			     utf8_len,
+				 cairo_glyph_t		    *glyphs,
+				 int			     num_glyphs,
+				 const cairo_text_cluster_t *clusters,
+				 int			     num_clusters,
+				 cairo_text_cluster_flags_t  cluster_flags,
+				 cairo_scaled_font_t	    *scaled_font,
+				 const cairo_clip_t		*clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (num_glyphs == 0 && utf8_len == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (_cairo_clip_is_all_clipped (clip))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _pattern_has_error (source);
+    if (unlikely (status))
+	return status;
+
+    if (nothing_to_do (surface, op, source))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_begin_modification (surface);
+    if (unlikely (status))
+	return status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (_cairo_scaled_font_has_color_glyphs (scaled_font)) {
+        status = composite_color_glyphs (surface, op,
+                                         source,
+                                         (char *)utf8, &utf8_len,
+                                         glyphs, &num_glyphs,
+                                         (cairo_text_cluster_t *)clusters, &num_clusters, cluster_flags,
+                                         scaled_font,
+                                         clip);
+
+        if (unlikely (status && status != CAIRO_INT_STATUS_NOTHING_TO_DO))
+            goto DONE;
+
+        if (num_glyphs == 0)
+            goto DONE;
+    }
+
+    /* The logic here is duplicated in _cairo_analysis_surface show_glyphs and
+     * show_text_glyphs.  Keep in synch. */
+    if (clusters) {
+	/* A real show_text_glyphs call.  Try show_text_glyphs backend
+	 * method first */
+	if (surface->backend->show_text_glyphs != NULL) {
+	    status = surface->backend->show_text_glyphs (surface, op,
+							 source,
+							 utf8, utf8_len,
+							 glyphs, num_glyphs,
+							 clusters, num_clusters, cluster_flags,
+							 scaled_font,
+							 clip);
+	}
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED &&
+	    surface->backend->show_glyphs)
+	{
+	    status = surface->backend->show_glyphs (surface, op,
+						    source,
+						    glyphs, num_glyphs,
+						    scaled_font,
+						    clip);
+	}
+    } else {
+	/* A mere show_glyphs call.  Try show_glyphs backend method first */
+	if (surface->backend->show_glyphs != NULL) {
+	    status = surface->backend->show_glyphs (surface, op,
+						    source,
+						    glyphs, num_glyphs,
+						    scaled_font,
+						    clip);
+	} else if (surface->backend->show_text_glyphs != NULL) {
+	    /* Intentionally only try show_text_glyphs method for show_glyphs
+	     * calls if backend does not have show_glyphs.  If backend has
+	     * both methods implemented, we don't fallback from show_glyphs to
+	     * show_text_glyphs, and hence the backend can assume in its
+	     * show_text_glyphs call that clusters is not NULL (which also
+	     * implies that UTF-8 is not NULL, unless the text is
+	     * zero-length).
+	     */
+	    status = surface->backend->show_text_glyphs (surface, op,
+							 source,
+							 utf8, utf8_len,
+							 glyphs, num_glyphs,
+							 clusters, num_clusters, cluster_flags,
+							 scaled_font,
+							 clip);
+	}
+    }
+
+DONE:
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	surface->is_clear = FALSE;
+	surface->serial++;
+    }
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+cairo_status_t
+_cairo_surface_tag (cairo_surface_t	        *surface,
+		    cairo_bool_t                 begin,
+		    const char                  *tag_name,
+		    const char                  *attributes,
+		    const cairo_pattern_t	*source,
+		    const cairo_stroke_style_t	*stroke_style,
+		    const cairo_matrix_t	*ctm,
+		    const cairo_matrix_t	*ctm_inverse,
+		    const cairo_clip_t	        *clip)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (unlikely (surface->status))
+	return surface->status;
+    if (unlikely (surface->finished))
+	return _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (surface->backend->tag == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (begin) {
+	status = _pattern_has_error (source);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = surface->backend->tag (surface, begin, tag_name, attributes,
+				    source, stroke_style,
+				    ctm, ctm_inverse, clip);
+
+    return _cairo_surface_set_error (surface, status);
+}
+
+
+/**
+ * _cairo_surface_set_resolution:
+ * @surface: the surface
+ * @x_res: x resolution, in dpi
+ * @y_res: y resolution, in dpi
+ *
+ * Set the actual surface resolution of @surface to the given x and y DPI.
+ * Mainly used for correctly computing the scale factor when fallback
+ * rendering needs to take place in the paginated surface.
+ **/
+void
+_cairo_surface_set_resolution (cairo_surface_t *surface,
+			       double x_res,
+			       double y_res)
+{
+    if (surface->status)
+	return;
+
+    surface->x_resolution = x_res;
+    surface->y_resolution = y_res;
+}
+
+/**
+ * _cairo_surface_create_in_error:
+ * @status: the error status
+ *
+ * Return an appropriate static error surface for the error status.
+ * On error, surface creation functions should always return a surface
+ * created with _cairo_surface_create_in_error() instead of a new surface
+ * in an error state. This simplifies internal code as no refcounting has
+ * to be done.
+ **/
+cairo_surface_t *
+_cairo_surface_create_in_error (cairo_status_t status)
+{
+    assert (status < CAIRO_STATUS_LAST_STATUS);
+    switch (status) {
+    case CAIRO_STATUS_NO_MEMORY:
+	return (cairo_surface_t *) &_cairo_surface_nil;
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH:
+	return (cairo_surface_t *) &_cairo_surface_nil_surface_type_mismatch;
+    case CAIRO_STATUS_INVALID_STATUS:
+	return (cairo_surface_t *) &_cairo_surface_nil_invalid_status;
+    case CAIRO_STATUS_INVALID_CONTENT:
+	return (cairo_surface_t *) &_cairo_surface_nil_invalid_content;
+    case CAIRO_STATUS_INVALID_FORMAT:
+	return (cairo_surface_t *) &_cairo_surface_nil_invalid_format;
+    case CAIRO_STATUS_INVALID_VISUAL:
+	return (cairo_surface_t *) &_cairo_surface_nil_invalid_visual;
+    case CAIRO_STATUS_READ_ERROR:
+	return (cairo_surface_t *) &_cairo_surface_nil_read_error;
+    case CAIRO_STATUS_WRITE_ERROR:
+	return (cairo_surface_t *) &_cairo_surface_nil_write_error;
+    case CAIRO_STATUS_FILE_NOT_FOUND:
+	return (cairo_surface_t *) &_cairo_surface_nil_file_not_found;
+    case CAIRO_STATUS_TEMP_FILE_ERROR:
+	return (cairo_surface_t *) &_cairo_surface_nil_temp_file_error;
+    case CAIRO_STATUS_INVALID_STRIDE:
+	return (cairo_surface_t *) &_cairo_surface_nil_invalid_stride;
+    case CAIRO_STATUS_INVALID_SIZE:
+	return (cairo_surface_t *) &_cairo_surface_nil_invalid_size;
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH:
+	return (cairo_surface_t *) &_cairo_surface_nil_device_type_mismatch;
+    case CAIRO_STATUS_DEVICE_ERROR:
+	return (cairo_surface_t *) &_cairo_surface_nil_device_error;
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	/* fall-through */
+    case CAIRO_STATUS_INVALID_RESTORE:
+    case CAIRO_STATUS_INVALID_POP_GROUP:
+    case CAIRO_STATUS_NO_CURRENT_POINT:
+    case CAIRO_STATUS_INVALID_MATRIX:
+    case CAIRO_STATUS_NULL_POINTER:
+    case CAIRO_STATUS_INVALID_STRING:
+    case CAIRO_STATUS_INVALID_PATH_DATA:
+    case CAIRO_STATUS_SURFACE_FINISHED:
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH:
+    case CAIRO_STATUS_INVALID_DASH:
+    case CAIRO_STATUS_INVALID_DSC_COMMENT:
+    case CAIRO_STATUS_INVALID_INDEX:
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE:
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH:
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE:
+    case CAIRO_STATUS_USER_FONT_ERROR:
+    case CAIRO_STATUS_NEGATIVE_COUNT:
+    case CAIRO_STATUS_INVALID_CLUSTERS:
+    case CAIRO_STATUS_INVALID_SLANT:
+    case CAIRO_STATUS_INVALID_WEIGHT:
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED:
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
+    case CAIRO_STATUS_DEVICE_FINISHED:
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+    case CAIRO_STATUS_PNG_ERROR:
+    case CAIRO_STATUS_FREETYPE_ERROR:
+    case CAIRO_STATUS_WIN32_GDI_ERROR:
+    case CAIRO_STATUS_TAG_ERROR:
+    default:
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_surface_t *) &_cairo_surface_nil;
+    }
+}
+
+cairo_surface_t *
+_cairo_int_surface_create_in_error (cairo_int_status_t status)
+{
+    if (status < CAIRO_INT_STATUS_LAST_STATUS)
+	return _cairo_surface_create_in_error (status);
+
+    switch ((int)status) {
+    case CAIRO_INT_STATUS_UNSUPPORTED:
+	return (cairo_surface_t *) &_cairo_surface_nil_unsupported;
+    case CAIRO_INT_STATUS_NOTHING_TO_DO:
+	return (cairo_surface_t *) &_cairo_surface_nil_nothing_to_do;
+    default:
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_surface_t *) &_cairo_surface_nil;
+    }
+}
+
+/*  LocalWords:  rasterized
+ */
diff --git a/libs/cairo-1.16.0/src/cairo-svg-surface-private.h b/libs/cairo-1.16.0/src/cairo-svg-surface-private.h
new file mode 100644
index 0000000..6f69325
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-svg-surface-private.h
@@ -0,0 +1,83 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ * Copyright © 2005-2006 Emmanuel Pacaud <emmanuel.pacaud@free.fr>
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ * 	Emmanuel Pacaud <emmanuel.pacaud@univ-poitiers.fr>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_SVG_SURFACE_PRIVATE_H
+#define CAIRO_SVG_SURFACE_PRIVATE_H
+
+#include "cairo-svg.h"
+
+#include "cairo-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+
+typedef struct cairo_svg_document cairo_svg_document_t;
+
+typedef struct _cairo_svg_source_surface {
+    cairo_hash_entry_t base;
+    unsigned int id;
+    unsigned char *unique_id;
+    unsigned long unique_id_length;
+} cairo_svg_source_surface_t;
+
+typedef struct cairo_svg_surface {
+    cairo_surface_t base;
+
+    cairo_content_t content;
+
+    double width;
+    double height;
+    cairo_bool_t surface_bounded;
+
+    cairo_svg_document_t *document;
+
+    cairo_output_stream_t *xml_node;
+    cairo_array_t	   page_set;
+    cairo_hash_table_t    *source_surfaces;
+
+    cairo_surface_clipper_t clipper;
+    unsigned int clip_level;
+    unsigned int base_clip;
+    cairo_bool_t is_base_clip_emitted;
+
+    cairo_paginated_mode_t paginated_mode;
+
+    cairo_bool_t force_fallbacks;
+} cairo_svg_surface_t;
+
+#endif /* CAIRO_SVG_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-svg-surface.c b/libs/cairo-1.16.0/src/cairo-svg-surface.c
new file mode 100644
index 0000000..dd37198
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-svg-surface.c
@@ -0,0 +1,3092 @@
+/* vim: set sw=4 sts=4: -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ * Copyright © 2005-2007 Emmanuel Pacaud <emmanuel.pacaud@free.fr>
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Emmanuel Pacaud <emmanuel.pacaud@free.fr>
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf() */
+#include "cairoint.h"
+
+#include "cairo-svg.h"
+
+#include "cairo-array-private.h"
+#include "cairo-analysis-surface-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-info-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-svg-surface-private.h"
+
+/**
+ * SECTION:cairo-svg
+ * @Title: SVG Surfaces
+ * @Short_Description: Rendering SVG documents
+ * @See_Also: #cairo_surface_t
+ *
+ * The SVG surface is used to render cairo graphics to
+ * SVG files and is a multi-page vector surface backend.
+ **/
+
+/**
+ * CAIRO_HAS_SVG_SURFACE:
+ *
+ * Defined if the SVG surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.2
+ **/
+
+typedef struct cairo_svg_page cairo_svg_page_t;
+
+static const int invalid_pattern_id = -1;
+
+static const cairo_svg_version_t _cairo_svg_versions[] =
+{
+    CAIRO_SVG_VERSION_1_1,
+    CAIRO_SVG_VERSION_1_2
+};
+
+#define CAIRO_SVG_VERSION_LAST ARRAY_LENGTH (_cairo_svg_versions)
+
+static const char *_cairo_svg_supported_mime_types[] =
+{
+    CAIRO_MIME_TYPE_JPEG,
+    CAIRO_MIME_TYPE_PNG,
+    CAIRO_MIME_TYPE_UNIQUE_ID,
+    CAIRO_MIME_TYPE_URI,
+    NULL
+};
+
+static void
+_cairo_svg_surface_emit_path (cairo_output_stream_t	*output,
+			      const cairo_path_fixed_t	*path,
+			      const cairo_matrix_t	*ctm_inverse);
+
+static cairo_bool_t
+_cairo_svg_version_has_page_set_support (cairo_svg_version_t version)
+{
+    return version > CAIRO_SVG_VERSION_1_1;
+}
+
+static const char * _cairo_svg_version_strings[CAIRO_SVG_VERSION_LAST] =
+{
+    "SVG 1.1",
+    "SVG 1.2"
+};
+
+static const char * _cairo_svg_internal_version_strings[CAIRO_SVG_VERSION_LAST] =
+{
+    "1.1",
+    "1.2"
+};
+
+static const char * _cairo_svg_unit_strings[] =
+{
+    "",
+    "em",
+    "ex",
+    "px",
+    "in",
+    "cm",
+    "mm",
+    "pt",
+    "pc",
+    "%"
+};
+
+struct cairo_svg_page {
+    unsigned int surface_id;
+    unsigned int clip_level;
+    cairo_output_stream_t *xml_node;
+};
+
+struct cairo_svg_document {
+    cairo_output_stream_t *output_stream;
+    unsigned long refcount;
+    cairo_surface_t *owner;
+    cairo_bool_t finished;
+
+    double width;
+    double height;
+    cairo_svg_unit_t unit;
+
+    cairo_output_stream_t *xml_node_defs;
+    cairo_output_stream_t *xml_node_glyphs;
+
+    unsigned int linear_pattern_id;
+    unsigned int radial_pattern_id;
+    unsigned int pattern_id;
+    unsigned int filter_id;
+    unsigned int clip_id;
+    unsigned int mask_id;
+
+    cairo_bool_t alpha_filter;
+
+    cairo_svg_version_t svg_version;
+
+    cairo_scaled_font_subsets_t *font_subsets;
+};
+
+static cairo_status_t
+_cairo_svg_document_create (cairo_output_stream_t	 *stream,
+			    double			  width,
+			    double			  height,
+			    cairo_svg_version_t		  version,
+			    cairo_svg_document_t	**document_out);
+
+static cairo_status_t
+_cairo_svg_document_destroy (cairo_svg_document_t *document);
+
+static cairo_status_t
+_cairo_svg_document_finish (cairo_svg_document_t *document);
+
+static cairo_svg_document_t *
+_cairo_svg_document_reference (cairo_svg_document_t *document);
+
+static unsigned int
+_cairo_svg_document_allocate_mask_id (cairo_svg_document_t *document);
+
+static cairo_surface_t *
+_cairo_svg_surface_create_for_document (cairo_svg_document_t	*document,
+					cairo_content_t		 content,
+					double			 width,
+					double			 height,
+					cairo_bool_t             bounded);
+
+static cairo_surface_t *
+_cairo_svg_surface_create_for_stream_internal (cairo_output_stream_t	*stream,
+					       double			 width,
+					       double			 height,
+					       cairo_svg_version_t	 version);
+
+static const cairo_surface_backend_t cairo_svg_surface_backend;
+static const cairo_paginated_surface_backend_t cairo_svg_surface_paginated_backend;
+
+/**
+ * cairo_svg_surface_create_for_stream:
+ * @write_func: a #cairo_write_func_t to accept the output data, may be %NULL
+ *              to indicate a no-op @write_func. With a no-op @write_func,
+ *              the surface may be queried or used as a source without
+ *              generating any temporary files.
+ * @closure: the closure argument for @write_func
+ * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
+ * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
+ *
+ * Creates a SVG surface of the specified size in points to be written
+ * incrementally to the stream represented by @write_func and @closure.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_svg_surface_create_for_stream (cairo_write_func_t		 write_func,
+				     void			*closure,
+				     double			 width,
+				     double			 height)
+{
+    cairo_output_stream_t *stream;
+
+    stream = _cairo_output_stream_create (write_func, NULL, closure);
+    if (_cairo_output_stream_get_status (stream))
+	return _cairo_surface_create_in_error (_cairo_output_stream_destroy (stream));
+
+    return _cairo_svg_surface_create_for_stream_internal (stream, width, height, CAIRO_SVG_VERSION_1_1);
+}
+
+/**
+ * cairo_svg_surface_create:
+ * @filename: a filename for the SVG output (must be writable), %NULL may be
+ *            used to specify no output. This will generate a SVG surface that
+ *            may be queried and used as a source, without generating a
+ *            temporary file.
+ * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
+ * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
+ *
+ * Creates a SVG surface of the specified size in points to be written
+ * to @filename.
+ *
+ * The SVG surface backend recognizes the following MIME types for the
+ * data attached to a surface (see cairo_surface_set_mime_data()) when
+ * it is used as a source pattern for drawing on this surface:
+ * %CAIRO_MIME_TYPE_JPEG, %CAIRO_MIME_TYPE_PNG,
+ * %CAIRO_MIME_TYPE_URI. If any of them is specified, the SVG backend
+ * emits a href with the content of MIME data instead of a surface
+ * snapshot (PNG, Base64-encoded) in the corresponding image tag.
+ *
+ * The unofficial MIME type %CAIRO_MIME_TYPE_URI is examined
+ * first. If present, the URI is emitted as is: assuring the
+ * correctness of URI is left to the client code.
+ *
+ * If %CAIRO_MIME_TYPE_URI is not present, but %CAIRO_MIME_TYPE_JPEG
+ * or %CAIRO_MIME_TYPE_PNG is specified, the corresponding data is
+ * Base64-encoded and emitted.
+ *
+ * If %CAIRO_MIME_TYPE_UNIQUE_ID is present, all surfaces with the same
+ * unique identifier will only be embedded once.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_svg_surface_create (const char	*filename,
+			  double	 width,
+			  double	 height)
+{
+    cairo_output_stream_t *stream;
+
+    stream = _cairo_output_stream_create_for_filename (filename);
+    if (_cairo_output_stream_get_status (stream))
+	return _cairo_surface_create_in_error (_cairo_output_stream_destroy (stream));
+
+    return _cairo_svg_surface_create_for_stream_internal (stream, width, height, CAIRO_SVG_VERSION_1_1);
+}
+
+static cairo_bool_t
+_cairo_surface_is_svg (cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_svg_surface_backend;
+}
+
+/* If the abstract_surface is a paginated surface, and that paginated
+ * surface's target is a svg_surface, then set svg_surface to that
+ * target. Otherwise return FALSE.
+ */
+static cairo_bool_t
+_extract_svg_surface (cairo_surface_t		 *surface,
+		      cairo_svg_surface_t	**svg_surface)
+{
+    cairo_surface_t *target;
+    cairo_status_t status_ignored;
+
+    if (surface->status)
+	return FALSE;
+    if (surface->finished) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+        return FALSE;
+    }
+
+    if (! _cairo_surface_is_paginated (surface)) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return FALSE;
+    }
+
+    target = _cairo_paginated_surface_get_target (surface);
+    if (target->status) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   target->status);
+	return FALSE;
+    }
+    if (target->finished) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+        return FALSE;
+    }
+
+    if (! _cairo_surface_is_svg (target)) {
+	status_ignored = _cairo_surface_set_error (surface,
+						   _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return FALSE;
+    }
+
+    *svg_surface = (cairo_svg_surface_t *) target;
+    return TRUE;
+}
+
+/**
+ * cairo_svg_surface_restrict_to_version:
+ * @surface: a SVG #cairo_surface_t
+ * @version: SVG version
+ *
+ * Restricts the generated SVG file to @version. See cairo_svg_get_versions()
+ * for a list of available version values that can be used here.
+ *
+ * This function should only be called before any drawing operations
+ * have been performed on the given surface. The simplest way to do
+ * this is to call this function immediately after creating the
+ * surface.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_svg_surface_restrict_to_version (cairo_surface_t		*abstract_surface,
+				       cairo_svg_version_t	 version)
+{
+    cairo_svg_surface_t *surface = NULL; /* hide compiler warning */
+
+    if (! _extract_svg_surface (abstract_surface, &surface))
+	return;
+
+    if (version < CAIRO_SVG_VERSION_LAST)
+	surface->document->svg_version = version;
+}
+
+/**
+ * cairo_svg_get_versions:
+ * @versions: supported version list
+ * @num_versions: list length
+ *
+ * Used to retrieve the list of supported versions. See
+ * cairo_svg_surface_restrict_to_version().
+ *
+ * Since: 1.2
+ **/
+void
+cairo_svg_get_versions (cairo_svg_version_t const	**versions,
+                        int				 *num_versions)
+{
+    if (versions != NULL)
+	*versions = _cairo_svg_versions;
+
+    if (num_versions != NULL)
+	*num_versions = CAIRO_SVG_VERSION_LAST;
+}
+
+/**
+ * cairo_svg_version_to_string:
+ * @version: a version id
+ *
+ * Get the string representation of the given @version id. This function
+ * will return %NULL if @version isn't valid. See cairo_svg_get_versions()
+ * for a way to get the list of valid version ids.
+ *
+ * Return value: the string associated to given version.
+ *
+ * Since: 1.2
+ **/
+const char *
+cairo_svg_version_to_string (cairo_svg_version_t version)
+{
+    if (version >= CAIRO_SVG_VERSION_LAST)
+	return NULL;
+
+    return _cairo_svg_version_strings[version];
+}
+
+/**
+ * cairo_svg_surface_set_document_unit:
+ * @surface: a SVG #cairo_surface_t
+ * @unit: SVG unit
+ *
+ * Use the specified unit for the width and height of the generated SVG file.
+ * See #cairo_svg_unit_t for a list of available unit values that can be used
+ * here.
+ *
+ * This function can be called at any time before generating the SVG file.
+ *
+ * However to minimize the risk of ambiguities it's recommended to call it
+ * before any drawing operations have been performed on the given surface, to
+ * make it clearer what the unit used in the drawing operations is.
+ *
+ * The simplest way to do this is to call this function immediately after
+ * creating the SVG surface.
+ *
+ * Note if this function is never called, the default unit for SVG documents
+ * generated by cairo will be "pt". This is for historical reasons.
+ *
+ * Since: 1.16
+ **/
+void
+cairo_svg_surface_set_document_unit (cairo_surface_t	*abstract_surface,
+				     cairo_svg_unit_t	 unit)
+{
+    cairo_svg_surface_t *surface = NULL; /* hide compiler warning */
+
+    if (! _extract_svg_surface (abstract_surface, &surface))
+	return;
+
+    if (unit <= CAIRO_SVG_UNIT_PERCENT)
+	surface->document->unit = unit;
+}
+
+/**
+ * cairo_svg_surface_get_document_unit:
+ * @surface: a SVG #cairo_surface_t
+ *
+ * Get the unit of the SVG surface.
+ *
+ * If the surface passed as an argument is not a SVG surface, the function
+ * sets the error status to CAIRO_STATUS_SURFACE_TYPE_MISMATCH and returns
+ * CAIRO_SVG_UNIT_USER.
+ *
+ * Return value: the SVG unit of the SVG surface.
+ *
+ * Since: 1.16
+ **/
+cairo_svg_unit_t
+cairo_svg_surface_get_document_unit (cairo_surface_t	*abstract_surface)
+{
+    cairo_svg_surface_t *surface = NULL; /* hide compiler warning */
+
+    if (! _extract_svg_surface (abstract_surface, &surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return CAIRO_SVG_UNIT_USER;
+    }
+
+    return surface->document->unit;
+}
+
+static void
+_cairo_svg_source_surface_init_key (cairo_svg_source_surface_t *key)
+{
+    if (key->unique_id && key->unique_id_length > 0) {
+	key->base.hash = _cairo_hash_bytes (_CAIRO_HASH_INIT_VALUE,
+					    key->unique_id, key->unique_id_length);
+    } else {
+	key->base.hash = key->id;
+    }
+}
+
+static cairo_bool_t
+_cairo_svg_source_surface_equal (const void *key_a, const void *key_b)
+{
+    const cairo_svg_source_surface_t *a = key_a;
+    const cairo_svg_source_surface_t *b = key_b;
+
+    if (a->unique_id && b->unique_id && a->unique_id_length == b->unique_id_length)
+	return (memcmp (a->unique_id, b->unique_id, a->unique_id_length) == 0);
+
+    return (a->id == b->id);
+}
+
+static void
+_cairo_svg_source_surface_pluck (void *entry, void *closure)
+{
+    cairo_svg_source_surface_t *surface_entry = entry;
+    cairo_hash_table_t *patterns = closure;
+
+    _cairo_hash_table_remove (patterns, &surface_entry->base);
+    free (surface_entry->unique_id);
+    free (surface_entry);
+}
+
+static cairo_status_t
+_cairo_svg_surface_add_source_surface (cairo_svg_surface_t  *surface,
+				       cairo_surface_t	    *source_surface,
+				       int                  *source_id,
+				       cairo_bool_t         *is_new)
+{
+    cairo_svg_source_surface_t source_key;
+    cairo_svg_source_surface_t *source_entry;
+    unsigned char *unique_id = NULL;
+    unsigned long unique_id_length = 0;
+    cairo_status_t status;
+
+    source_key.id  = source_surface->unique_id;
+    cairo_surface_get_mime_data (source_surface, CAIRO_MIME_TYPE_UNIQUE_ID,
+				 (const unsigned char **) &source_key.unique_id,
+				 &source_key.unique_id_length);
+    _cairo_svg_source_surface_init_key (&source_key);
+    source_entry = _cairo_hash_table_lookup (surface->source_surfaces, &source_key.base);
+    if (source_entry) {
+	*source_id = source_entry->id;
+	*is_new = FALSE;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (source_key.unique_id && source_key.unique_id_length > 0) {
+	unique_id = _cairo_malloc (source_key.unique_id_length);
+	if (unique_id == NULL) {
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	unique_id_length = source_key.unique_id_length;
+	memcpy (unique_id, source_key.unique_id, unique_id_length);
+    } else {
+	unique_id = NULL;
+	unique_id_length = 0;
+    }
+
+    source_entry = malloc (sizeof (cairo_svg_source_surface_t));
+    if (source_entry == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail;
+    }
+
+    source_entry->id = source_key.id;
+    source_entry->unique_id_length = unique_id_length;
+    source_entry->unique_id = unique_id;
+    _cairo_svg_source_surface_init_key (source_entry);
+    status = _cairo_hash_table_insert (surface->source_surfaces, &source_entry->base);
+    if (unlikely(status))
+	goto fail;
+
+    *is_new = TRUE;
+    *source_id = source_entry->id;
+    return CAIRO_STATUS_SUCCESS;
+
+  fail:
+    free (unique_id);
+    free (source_entry);
+    return status;
+}
+
+static cairo_bool_t
+_cliprect_covers_surface (cairo_svg_surface_t *surface,
+			  cairo_path_fixed_t *path)
+{
+    cairo_box_t box;
+
+    if (_cairo_path_fixed_is_box (path, &box)) {
+	if (box.p1.x <= 0 &&
+	    box.p1.y <= 0 &&
+	    _cairo_fixed_to_double (box.p2.x) >= surface->width &&
+	    _cairo_fixed_to_double (box.p2.y) >= surface->height)
+	{
+	    return TRUE;
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_status_t
+_cairo_svg_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+						cairo_path_fixed_t	*path,
+						cairo_fill_rule_t	 fill_rule,
+						double			 tolerance,
+						cairo_antialias_t	 antialias)
+{
+    cairo_svg_surface_t *surface = cairo_container_of (clipper,
+						       cairo_svg_surface_t,
+						       clipper);
+    cairo_svg_document_t *document = surface->document;
+    unsigned int i;
+
+    if (path == NULL) {
+	for (i = 0; i < surface->clip_level; i++)
+	    _cairo_output_stream_printf (surface->xml_node, "</g>\n");
+
+	surface->clip_level = 0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* skip trivial whole-page clips */
+    if (_cliprect_covers_surface (surface, path))
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "<clipPath id=\"clip%d\">\n"
+				 "  <path ",
+				 document->clip_id);
+    _cairo_svg_surface_emit_path (document->xml_node_defs, path, NULL);
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "/>\n"
+				 "</clipPath>\n");
+
+    _cairo_output_stream_printf (surface->xml_node,
+				 "<g clip-path=\"url(#clip%d)\" "
+				 "clip-rule=\"%s\">\n",
+				 document->clip_id,
+				 fill_rule == CAIRO_FILL_RULE_EVEN_ODD ?
+				 "evenodd" : "nonzero");
+
+    document->clip_id++;
+    surface->clip_level++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_svg_surface_create_for_document (cairo_svg_document_t	*document,
+					cairo_content_t		 content,
+					double			 width,
+					double			 height,
+					cairo_bool_t             bounded)
+{
+    cairo_svg_surface_t *surface;
+    cairo_surface_t *paginated;
+    cairo_status_t status, status_ignored;
+
+    surface = _cairo_malloc (sizeof (cairo_svg_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_svg_surface_backend,
+			 NULL, /* device */
+			 content,
+			 TRUE); /* is_vector */
+
+    surface->width = width;
+    surface->height = height;
+    surface->surface_bounded = bounded;
+
+    surface->document = _cairo_svg_document_reference (document);
+
+    surface->clip_level = 0;
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_svg_surface_clipper_intersect_clip_path);
+
+    surface->base_clip = document->clip_id++;
+    surface->is_base_clip_emitted = FALSE;
+
+    surface->xml_node = _cairo_memory_stream_create ();
+    status = _cairo_output_stream_get_status (surface->xml_node);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    _cairo_array_init (&surface->page_set, sizeof (cairo_svg_page_t));
+
+    if (content == CAIRO_CONTENT_COLOR) {
+	_cairo_output_stream_printf (surface->xml_node,
+				     "<rect width=\"%f\" height=\"%f\" "
+				     "style=\"opacity:1;stroke:none;"
+				     "fill:rgb(0,0,0);\"/>\n",
+				     width, height);
+	status = _cairo_output_stream_get_status (surface->xml_node);
+	if (unlikely (status))
+	    goto CLEANUP;
+    }
+
+    surface->paginated_mode = CAIRO_PAGINATED_MODE_ANALYZE;
+    surface->force_fallbacks = FALSE;
+    surface->content = content;
+
+    surface->source_surfaces = _cairo_hash_table_create (_cairo_svg_source_surface_equal);
+    if (unlikely (surface->source_surfaces == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP;
+    }
+
+    paginated = _cairo_paginated_surface_create (&surface->base,
+					         surface->content,
+						 &cairo_svg_surface_paginated_backend);
+    status = paginated->status;
+    if (status == CAIRO_STATUS_SUCCESS) {
+	/* paginated keeps the only reference to surface now, drop ours */
+	cairo_surface_destroy (&surface->base);
+	return paginated;
+    }
+
+    /* ignore status as we are on the error path */
+CLEANUP:
+    status_ignored = _cairo_output_stream_destroy (surface->xml_node);
+    status_ignored = _cairo_svg_document_destroy (document);
+
+    free (surface);
+
+    return _cairo_surface_create_in_error (status);
+}
+
+static cairo_surface_t *
+_cairo_svg_surface_create_for_stream_internal (cairo_output_stream_t	*stream,
+					       double			 width,
+					       double			 height,
+					       cairo_svg_version_t	 version)
+{
+    cairo_svg_document_t *document = NULL; /* silence compiler */
+    cairo_surface_t *surface;
+    cairo_status_t status;
+
+    status = _cairo_svg_document_create (stream,
+	                                 width, height, version,
+					 &document);
+    if (unlikely (status)) {
+	surface =  _cairo_surface_create_in_error (status);
+	/* consume the output stream on behalf of caller */
+	status = _cairo_output_stream_destroy (stream);
+	return surface;
+    }
+
+    surface = _cairo_svg_surface_create_for_document (document, CAIRO_CONTENT_COLOR_ALPHA,
+						      width, height, TRUE);
+    if (surface->status) {
+	status = _cairo_svg_document_destroy (document);
+	return surface;
+    }
+
+    document->owner = surface;
+    status = _cairo_svg_document_destroy (document);
+    /* the ref count should be 2 at this point */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    return surface;
+}
+
+static cairo_svg_page_t *
+_cairo_svg_surface_store_page (cairo_svg_surface_t *surface)
+{
+    cairo_svg_page_t page;
+    cairo_output_stream_t *stream;
+    cairo_int_status_t status;
+    unsigned int i;
+
+    stream = _cairo_memory_stream_create ();
+    if (_cairo_output_stream_get_status (stream)) {
+	status = _cairo_output_stream_destroy (stream);
+	return NULL;
+    }
+
+    page.surface_id = surface->base.unique_id;
+    page.clip_level = surface->clip_level;
+    page.xml_node = surface->xml_node;
+
+    if (_cairo_array_append (&surface->page_set, &page)) {
+	status = _cairo_output_stream_destroy (stream);
+	return NULL;
+    }
+
+    surface->xml_node = stream;
+    surface->clip_level = 0;
+    for (i = 0; i < page.clip_level; i++)
+	_cairo_output_stream_printf (page.xml_node, "</g>\n");
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    return _cairo_array_index (&surface->page_set,
+			       surface->page_set.num_elements - 1);
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_copy_page (void *abstract_surface)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_svg_page_t *page;
+
+    page = _cairo_svg_surface_store_page (surface);
+    if (unlikely (page == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_memory_stream_copy (page->xml_node, surface->xml_node);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_show_page (void *abstract_surface)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+
+    if (unlikely (_cairo_svg_surface_store_page (surface) == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_svg_surface_emit_transform (cairo_output_stream_t *output,
+				   char const		 *attribute_str,
+				   const cairo_matrix_t	 *object_matrix,
+				   const cairo_matrix_t  *parent_matrix)
+{
+    cairo_matrix_t matrix = *object_matrix;
+
+    if (parent_matrix != NULL)
+	cairo_matrix_multiply (&matrix, &matrix, parent_matrix);
+
+    if (!_cairo_matrix_is_identity (&matrix))
+	_cairo_output_stream_printf (output,
+				     "%s=\"matrix(%f,%f,%f,%f,%f,%f)\"",
+				     attribute_str,
+				     matrix.xx, matrix.yx,
+				     matrix.xy, matrix.yy,
+				     matrix.x0, matrix.y0);
+}
+
+typedef struct {
+    cairo_output_stream_t *output;
+    const cairo_matrix_t *ctm_inverse;
+} svg_path_info_t;
+
+static cairo_status_t
+_cairo_svg_path_move_to (void *closure,
+			 const cairo_point_t *point)
+{
+    svg_path_info_t *info = closure;
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (info->ctm_inverse)
+	cairo_matrix_transform_point (info->ctm_inverse, &x, &y);
+
+    _cairo_output_stream_printf (info->output, "M %f %f ", x, y);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_path_line_to (void *closure,
+			 const cairo_point_t *point)
+{
+    svg_path_info_t *info = closure;
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (info->ctm_inverse)
+	cairo_matrix_transform_point (info->ctm_inverse, &x, &y);
+
+    _cairo_output_stream_printf (info->output, "L %f %f ", x, y);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_path_curve_to (void          *closure,
+			  const cairo_point_t *b,
+			  const cairo_point_t *c,
+			  const cairo_point_t *d)
+{
+    svg_path_info_t *info = closure;
+    double bx = _cairo_fixed_to_double (b->x);
+    double by = _cairo_fixed_to_double (b->y);
+    double cx = _cairo_fixed_to_double (c->x);
+    double cy = _cairo_fixed_to_double (c->y);
+    double dx = _cairo_fixed_to_double (d->x);
+    double dy = _cairo_fixed_to_double (d->y);
+
+    if (info->ctm_inverse) {
+	cairo_matrix_transform_point (info->ctm_inverse, &bx, &by);
+	cairo_matrix_transform_point (info->ctm_inverse, &cx, &cy);
+	cairo_matrix_transform_point (info->ctm_inverse, &dx, &dy);
+    }
+
+    _cairo_output_stream_printf (info->output,
+				 "C %f %f %f %f %f %f ",
+				 bx, by, cx, cy, dx, dy);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_path_close_path (void *closure)
+{
+    svg_path_info_t *info = closure;
+
+    _cairo_output_stream_printf (info->output, "Z ");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_svg_surface_emit_path (cairo_output_stream_t	*output,
+			      const cairo_path_fixed_t	*path,
+			      const cairo_matrix_t	*ctm_inverse)
+{
+    cairo_status_t status;
+    svg_path_info_t info;
+
+    _cairo_output_stream_printf (output, "d=\"");
+
+    info.output = output;
+    info.ctm_inverse = ctm_inverse;
+    status = _cairo_path_fixed_interpret (path,
+					  _cairo_svg_path_move_to,
+					  _cairo_svg_path_line_to,
+					  _cairo_svg_path_curve_to,
+					  _cairo_svg_path_close_path,
+					  &info);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _cairo_output_stream_printf (output, "\"");
+}
+
+static cairo_int_status_t
+_cairo_svg_document_emit_outline_glyph_data (cairo_svg_document_t	*document,
+					     cairo_scaled_font_t	*scaled_font,
+					     unsigned long		 glyph_index)
+{
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_int_status_t status;
+
+    status = _cairo_scaled_glyph_lookup (scaled_font,
+					 glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS|
+					 CAIRO_SCALED_GLYPH_INFO_PATH,
+					 &scaled_glyph);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (document->xml_node_glyphs,
+				 "<path style=\"stroke:none;\" ");
+
+    _cairo_svg_surface_emit_path (document->xml_node_glyphs,
+				  scaled_glyph->path, NULL);
+
+    _cairo_output_stream_printf (document->xml_node_glyphs,
+				 "/>\n");
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_svg_document_emit_bitmap_glyph_data (cairo_svg_document_t	*document,
+					    cairo_scaled_font_t		*scaled_font,
+					    unsigned long		 glyph_index)
+{
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+    uint8_t *row, *byte;
+    int rows, cols;
+    int x, y, bit;
+
+    status = _cairo_scaled_glyph_lookup (scaled_font,
+					 glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS |
+					 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					 &scaled_glyph);
+    if (unlikely (status))
+	return status;
+
+    image = _cairo_image_surface_coerce_to_format (scaled_glyph->surface,
+					           CAIRO_FORMAT_A1);
+    status = image->base.status;
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (document->xml_node_glyphs, "<g");
+    _cairo_svg_surface_emit_transform (document->xml_node_glyphs, " transform",
+				       &image->base.device_transform_inverse, NULL);
+    _cairo_output_stream_printf (document->xml_node_glyphs, ">\n");
+
+    for (y = 0, row = image->data, rows = image->height; rows; row += image->stride, rows--, y++) {
+	for (x = 0, byte = row, cols = (image->width + 7) / 8; cols; byte++, cols--) {
+	    uint8_t output_byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (*byte);
+	    for (bit = 7; bit >= 0 && x < image->width; bit--, x++) {
+		if (output_byte & (1 << bit)) {
+		    _cairo_output_stream_printf (document->xml_node_glyphs,
+						 "<rect x=\"%d\" y=\"%d\" width=\"1\" height=\"1\"/>\n",
+						 x, y);
+		}
+	    }
+	}
+    }
+    _cairo_output_stream_printf (document->xml_node_glyphs, "</g>\n");
+
+    cairo_surface_destroy (&image->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_document_emit_glyph (cairo_svg_document_t	*document,
+				cairo_scaled_font_t	*scaled_font,
+				unsigned long		 scaled_font_glyph_index,
+				unsigned int		 font_id,
+				unsigned int		 subset_glyph_index)
+{
+    cairo_int_status_t	     status;
+
+    _cairo_output_stream_printf (document->xml_node_glyphs,
+				 "<symbol overflow=\"visible\" id=\"glyph%d-%d\">\n",
+				 font_id,
+				 subset_glyph_index);
+
+    status = _cairo_svg_document_emit_outline_glyph_data (document,
+							  scaled_font,
+							  scaled_font_glyph_index);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	status = _cairo_svg_document_emit_bitmap_glyph_data (document,
+							     scaled_font,
+							     scaled_font_glyph_index);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (document->xml_node_glyphs, "</symbol>\n");
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_document_emit_font_subset (cairo_scaled_font_subset_t	*font_subset,
+				      void				*closure)
+{
+    cairo_svg_document_t *document = closure;
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+    unsigned int i;
+
+    _cairo_scaled_font_freeze_cache (font_subset->scaled_font);
+    for (i = 0; i < font_subset->num_glyphs; i++) {
+	status = _cairo_svg_document_emit_glyph (document,
+					         font_subset->scaled_font,
+					         font_subset->glyphs[i],
+					         font_subset->font_id, i);
+	if (unlikely (status))
+	    break;
+    }
+    _cairo_scaled_font_thaw_cache (font_subset->scaled_font);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_svg_document_emit_font_subsets (cairo_svg_document_t *document)
+{
+    cairo_status_t status;
+
+    status = _cairo_scaled_font_subsets_foreach_scaled (document->font_subsets,
+                                                        _cairo_svg_document_emit_font_subset,
+                                                        document);
+    if (unlikely (status))
+	goto FAIL;
+
+    status = _cairo_scaled_font_subsets_foreach_user (document->font_subsets,
+						      _cairo_svg_document_emit_font_subset,
+						      document);
+
+  FAIL:
+    _cairo_scaled_font_subsets_destroy (document->font_subsets);
+    document->font_subsets = NULL;
+
+    return status;
+}
+
+static char const *
+_cairo_svg_surface_operators[] = {
+    "clear",
+
+    "src", "src-over", "src-in",
+    "src-out", "src-atop",
+
+    "dst", "dst-over", "dst-in",
+    "dst-out", "dst-atop",
+
+    "xor", "plus",
+    "color-dodge", /* FIXME: saturate ? */
+
+    "multiply",	"screen", "overlay",
+    "darken", "lighten",
+    "color-dodge", "color-burn",
+    "hard-light", "soft-light",
+    "difference", "exclusion"
+};
+
+static cairo_bool_t
+_cairo_svg_surface_analyze_operator (cairo_svg_surface_t   *surface,
+				      cairo_operator_t	     op)
+{
+    /* guard against newly added operators */
+    if (op >= ARRAY_LENGTH (_cairo_svg_surface_operators))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* allow operators being NULL if they are unsupported */
+    if (_cairo_svg_surface_operators[op] == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_analyze_operation (cairo_svg_surface_t   *surface,
+				      cairo_operator_t	     op,
+				      const cairo_pattern_t *pattern)
+{
+    cairo_svg_document_t *document = surface->document;
+
+    if (surface->force_fallbacks &&
+	surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_MESH)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* SVG doesn't support extend reflect for image pattern */
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	pattern->extend == CAIRO_EXTEND_REFLECT)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (document->svg_version >= CAIRO_SVG_VERSION_1_2)
+	return _cairo_svg_surface_analyze_operator (surface, op);
+
+    if (op == CAIRO_OPERATOR_OVER)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* The SOURCE operator is only supported if there is nothing
+     * painted underneath. */
+    if (op == CAIRO_OPERATOR_SOURCE)
+	return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_operation_supported (cairo_svg_surface_t	*surface,
+					cairo_operator_t	 op,
+					const cairo_pattern_t	*pattern)
+{
+    return _cairo_svg_surface_analyze_operation (surface, op, pattern) != CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_status_t
+_cairo_svg_surface_finish (void *abstract_surface)
+{
+    cairo_status_t status, status2;
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_svg_document_t *document = surface->document;
+    cairo_svg_page_t *page;
+    unsigned int i;
+
+    if (_cairo_paginated_surface_get_target (document->owner) == &surface->base)
+	status = _cairo_svg_document_finish (document);
+    else
+	status = CAIRO_STATUS_SUCCESS;
+
+    if (surface->xml_node != NULL) {
+	status2 = _cairo_output_stream_destroy (surface->xml_node);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = status2;
+    }
+
+    for (i = 0; i < surface->page_set.num_elements; i++) {
+	page = _cairo_array_index (&surface->page_set, i);
+	status2 = _cairo_output_stream_destroy (page->xml_node);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = status2;
+    }
+    _cairo_array_fini (&surface->page_set);
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    _cairo_hash_table_foreach (surface->source_surfaces,
+			       _cairo_svg_source_surface_pluck,
+			       surface->source_surfaces);
+    _cairo_hash_table_destroy (surface->source_surfaces);
+
+    status2 = _cairo_svg_document_destroy (document);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+
+static void
+_cairo_svg_surface_emit_alpha_filter (cairo_svg_document_t *document)
+{
+    if (document->alpha_filter)
+	return;
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "<filter id=\"alpha\" "
+				 "filterUnits=\"objectBoundingBox\" "
+				 "x=\"0%%\" y=\"0%%\" "
+				 "width=\"100%%\" height=\"100%%\">\n"
+				 "  <feColorMatrix type=\"matrix\" "
+				 "in=\"SourceGraphic\" "
+				 "values=\"0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0\"/>\n"
+				 "</filter>\n");
+
+    document->alpha_filter = TRUE;
+}
+
+typedef struct {
+    cairo_output_stream_t *output;
+    unsigned int in_mem;
+    unsigned int trailing;
+    unsigned char src[3];
+} base64_write_closure_t;
+
+static char const base64_table[64] =
+"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static cairo_status_t
+base64_write_func (void *closure,
+		   const unsigned char *data,
+		   unsigned int length)
+{
+    base64_write_closure_t *info = (base64_write_closure_t *) closure;
+    unsigned int i;
+    unsigned char *src;
+
+    src = info->src;
+
+    if (info->in_mem + length < 3) {
+	for (i = 0; i < length; i++) {
+	    src[i + info->in_mem] = *data++;
+	}
+	info->in_mem += length;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    do {
+	unsigned char dst[4];
+
+	for (i = info->in_mem; i < 3; i++) {
+	    src[i] = *data++;
+	    length--;
+	}
+	info->in_mem = 0;
+
+	dst[0] = base64_table[src[0] >> 2];
+	dst[1] = base64_table[(src[0] & 0x03) << 4 | src[1] >> 4];
+	dst[2] = base64_table[(src[1] & 0x0f) << 2 | src[2] >> 6];
+	dst[3] = base64_table[src[2] & 0xfc >> 2];
+	/* Special case for the last missing bits */
+	switch (info->trailing) {
+	    case 2:
+		dst[2] = '=';
+	    case 1:
+		dst[3] = '=';
+	    default:
+		break;
+	}
+	_cairo_output_stream_write (info->output, dst, 4);
+    } while (length >= 3);
+
+    for (i = 0; i < length; i++) {
+	src[i] = *data++;
+    }
+    info->in_mem = length;
+
+    return _cairo_output_stream_get_status (info->output);
+}
+
+static cairo_int_status_t
+_cairo_surface_base64_encode_jpeg (cairo_surface_t       *surface,
+				   cairo_output_stream_t *output)
+{
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_image_info_t image_info;
+    base64_write_closure_t info;
+    cairo_status_t status;
+
+    cairo_surface_get_mime_data (surface, CAIRO_MIME_TYPE_JPEG,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jpeg_info (&image_info, mime_data, mime_data_length);
+    if (unlikely (status))
+	return status;
+
+    if (image_info.num_components == 4)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_output_stream_printf (output, "data:image/jpeg;base64,");
+
+    info.output = output;
+    info.in_mem = 0;
+    info.trailing = 0;
+
+    status = base64_write_func (&info, mime_data, mime_data_length);
+    if (unlikely (status))
+	return status;
+
+    if (info.in_mem > 0) {
+	memset (info.src + info.in_mem, 0, 3 - info.in_mem);
+	info.trailing = 3 - info.in_mem;
+	info.in_mem = 3;
+	status = base64_write_func (&info, NULL, 0);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_base64_encode_png (cairo_surface_t       *surface,
+				  cairo_output_stream_t *output)
+{
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    base64_write_closure_t info;
+    cairo_status_t status;
+
+    cairo_surface_get_mime_data (surface, CAIRO_MIME_TYPE_PNG,
+				 &mime_data, &mime_data_length);
+    if (unlikely (surface->status))
+	return surface->status;
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_output_stream_printf (output, "data:image/png;base64,");
+
+    info.output = output;
+    info.in_mem = 0;
+    info.trailing = 0;
+
+    status = base64_write_func (&info, mime_data, mime_data_length);
+    if (unlikely (status))
+	return status;
+
+    if (info.in_mem > 0) {
+	memset (info.src + info.in_mem, 0, 3 - info.in_mem);
+	info.trailing = 3 - info.in_mem;
+	info.in_mem = 3;
+	status = base64_write_func (&info, NULL, 0);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_surface_base64_encode (cairo_surface_t       *surface,
+			      cairo_output_stream_t *output)
+{
+    cairo_int_status_t status;
+    base64_write_closure_t info;
+
+    status = _cairo_surface_base64_encode_jpeg (surface, output);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    status = _cairo_surface_base64_encode_png (surface, output);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    info.output = output;
+    info.in_mem = 0;
+    info.trailing = 0;
+
+    _cairo_output_stream_printf (info.output, "data:image/png;base64,");
+
+    status = cairo_surface_write_to_png_stream (surface, base64_write_func,
+						(void *) &info);
+
+    if (unlikely (status))
+	return status;
+
+    if (info.in_mem > 0) {
+	memset (info.src + info.in_mem, 0, 3 - info.in_mem);
+	info.trailing = 3 - info.in_mem;
+	info.in_mem = 3;
+	status = base64_write_func (&info, NULL, 0);
+    }
+
+    return status;
+}
+
+static void
+_cairo_svg_surface_emit_operator (cairo_output_stream_t *output,
+				  cairo_svg_surface_t   *surface,
+				  cairo_operator_t	 op)
+{
+    if (surface->document->svg_version >= CAIRO_SVG_VERSION_1_2 &&
+	op != CAIRO_OPERATOR_OVER) {
+	_cairo_output_stream_printf (output, " comp-op=\"%s\"", _cairo_svg_surface_operators[op]);
+	if (!_cairo_operator_bounded_by_source (op))
+	   _cairo_output_stream_printf (output, " clip-to-self=\"true\"");
+    }
+}
+
+static void
+_cairo_svg_surface_emit_operator_for_style (cairo_output_stream_t *output,
+					    cairo_svg_surface_t   *surface,
+					    cairo_operator_t	 op)
+{
+    if (surface->document->svg_version >= CAIRO_SVG_VERSION_1_2 &&
+	op != CAIRO_OPERATOR_OVER) {
+	_cairo_output_stream_printf (output, "comp-op:%s;", _cairo_svg_surface_operators[op]);
+	if (!_cairo_operator_bounded_by_source (op))
+	   _cairo_output_stream_printf (output, "clip-to-self:true;");
+    }
+}
+
+/**
+ * _cairo_svg_surface_emit_attr_value:
+ *
+ * Write the value to output the stream as a sequence of characters,
+ * while escaping those which have special meaning in the XML
+ * attribute's value context: &amp; and &quot;.
+ **/
+static void
+_cairo_svg_surface_emit_attr_value (cairo_output_stream_t *stream,
+				    const unsigned char *value,
+				    unsigned int length)
+{
+    const unsigned char *p;
+    const unsigned char *q;
+    unsigned int i;
+
+    /* we'll accumulate non-special chars in [q, p) range */
+    p = value;
+    q = p;
+    for (i = 0; i < length; i++, p++) {
+	if (*p == '&' || *p == '"') {
+	    /* flush what's left before special char */
+	    if (p != q) {
+		_cairo_output_stream_write (stream, q, p - q);
+		q = p + 1;
+	    }
+
+	    if (*p == '&')
+		_cairo_output_stream_printf (stream, "&amp;");
+	    else // p == '"'
+		_cairo_output_stream_printf (stream, "&quot;");
+	}
+    }
+
+    /* flush the trailing chars if any */
+    if (p != q)
+	_cairo_output_stream_write (stream, q, p - q);
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_surface (cairo_svg_document_t *document,
+				 cairo_surface_t *surface,
+				 int source_id)
+{
+    cairo_rectangle_int_t extents;
+    cairo_bool_t is_bounded;
+    cairo_status_t status;
+    const unsigned char *uri;
+    unsigned long uri_len;
+
+    is_bounded = _cairo_surface_get_extents (surface, &extents);
+    assert (is_bounded);
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "<image id=\"image%d\" width=\"%d\" height=\"%d\"",
+				 source_id,
+				 extents.width, extents.height);
+
+    _cairo_output_stream_printf (document->xml_node_defs, " xlink:href=\"");
+
+    cairo_surface_get_mime_data (surface, CAIRO_MIME_TYPE_URI,
+				 &uri, &uri_len);
+    if (uri != NULL) {
+	_cairo_svg_surface_emit_attr_value (document->xml_node_defs,
+					    uri, uri_len);
+    } else {
+	status = _cairo_surface_base64_encode (surface,
+					       document->xml_node_defs);
+	if (unlikely (status))
+	    return status;
+    }
+
+    _cairo_output_stream_printf (document->xml_node_defs, "\"/>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_composite_surface_pattern (cairo_output_stream_t   *output,
+						   cairo_svg_surface_t	 *svg_surface,
+						   cairo_operator_t	  op,
+						   cairo_surface_pattern_t *pattern,
+						   int			  pattern_id,
+						   const cairo_matrix_t	 *parent_matrix,
+						   const char		 *extra_attributes)
+{
+    cairo_status_t status;
+    cairo_matrix_t p2u;
+    int source_id;
+    cairo_bool_t is_new;
+
+    p2u = pattern->base.matrix;
+    status = cairo_matrix_invert (&p2u);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    status = _cairo_svg_surface_add_source_surface (svg_surface,
+						    pattern->surface,
+						    &source_id,
+						    &is_new);
+    if (unlikely (status))
+	return status;
+
+    if (is_new) {
+	status = _cairo_svg_surface_emit_surface (svg_surface->document,
+						  pattern->surface,
+						  source_id);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (pattern_id != invalid_pattern_id) {
+	cairo_rectangle_int_t extents;
+	cairo_bool_t is_bounded;
+
+	is_bounded = _cairo_surface_get_extents (pattern->surface, &extents);
+	assert (is_bounded);
+
+	_cairo_output_stream_printf (output,
+				     "<pattern id=\"pattern%d\" "
+				     "patternUnits=\"userSpaceOnUse\" "
+				     "width=\"%d\" height=\"%d\" ",
+				     pattern_id,
+				     extents.width, extents.height);
+	_cairo_svg_surface_emit_transform (output,
+					   " patternTransform",
+					   &p2u, parent_matrix);
+	_cairo_output_stream_printf (output, ">\n  ");
+    }
+
+    _cairo_output_stream_printf (output,
+				 "<use xlink:href=\"#image%d\"",
+				 source_id);
+    if (extra_attributes)
+	_cairo_output_stream_printf (output, " %s", extra_attributes);
+
+    if (pattern_id == invalid_pattern_id) {
+	_cairo_svg_surface_emit_operator (output, svg_surface, op);
+	_cairo_svg_surface_emit_transform (output,
+					   " transform",
+					   &p2u, parent_matrix);
+    }
+    _cairo_output_stream_printf (output, "/>\n");
+
+
+    if (pattern_id != invalid_pattern_id)
+	_cairo_output_stream_printf (output, "</pattern>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_recording_surface (cairo_svg_document_t      *document,
+					   cairo_recording_surface_t *source,
+					   int                        source_id)
+{
+    cairo_status_t status;
+    cairo_surface_t *paginated_surface;
+    cairo_svg_surface_t *svg_surface;
+    cairo_array_t *page_set;
+    cairo_rectangle_int_t extents;
+    cairo_bool_t bounded;
+    cairo_output_stream_t *contents;
+
+    bounded = _cairo_surface_get_extents (&source->base, &extents);
+    paginated_surface = _cairo_svg_surface_create_for_document (document,
+								source->base.content,
+								extents.width,
+								extents.height,
+								bounded);
+    if (unlikely (paginated_surface->status))
+	return paginated_surface->status;
+
+    svg_surface = (cairo_svg_surface_t *)
+    _cairo_paginated_surface_get_target (paginated_surface);
+    cairo_surface_set_fallback_resolution (paginated_surface,
+					   document->owner->x_fallback_resolution,
+					   document->owner->y_fallback_resolution);
+    cairo_surface_set_device_offset (&svg_surface->base,
+				     -source->extents_pixels.x,
+				     -source->extents_pixels.y);
+
+    status = _cairo_recording_surface_replay (&source->base, paginated_surface);
+    if (unlikely (status)) {
+	cairo_surface_destroy (paginated_surface);
+	return status;
+    }
+
+    cairo_surface_show_page (paginated_surface);
+    status = cairo_surface_status (paginated_surface);
+    if (unlikely (status)) {
+	cairo_surface_destroy (paginated_surface);
+	return status;
+    }
+
+    if (! svg_surface->is_base_clip_emitted) {
+	svg_surface->is_base_clip_emitted = TRUE;
+	if (_cairo_surface_get_extents (&svg_surface->base, &extents)) {
+	    _cairo_output_stream_printf (document->xml_node_defs,
+					 "<clipPath id=\"clip%d\">\n"
+					 "  <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\"/>\n"
+					 "</clipPath>\n",
+					 svg_surface->base_clip,
+					 extents.x,
+					 extents.y,
+					 extents.width,
+					 extents.height);
+	}
+    }
+
+    if (source->base.content == CAIRO_CONTENT_ALPHA) {
+	_cairo_svg_surface_emit_alpha_filter (document);
+	_cairo_output_stream_printf (document->xml_node_defs,
+				     "<g id=\"surface%d\" "
+				     "clip-path=\"url(#clip%d)\" "
+				     "filter=\"url(#alpha)\">\n",
+				     source_id,
+				     svg_surface->base_clip);
+    } else {
+	_cairo_output_stream_printf (document->xml_node_defs,
+				     "<g id=\"surface%d\" "
+				     "clip-path=\"url(#clip%d)\">\n",
+				     source_id,
+				     svg_surface->base_clip);
+    }
+
+    contents = svg_surface->xml_node;
+    page_set = &svg_surface->page_set;
+
+    if (_cairo_memory_stream_length (contents) > 0) {
+	if (unlikely (_cairo_svg_surface_store_page (svg_surface) == NULL)) {
+	    cairo_surface_destroy (paginated_surface);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    if (page_set->num_elements > 0) {
+	cairo_svg_page_t *page;
+
+	page = _cairo_array_index (page_set, page_set->num_elements - 1);
+	_cairo_memory_stream_copy (page->xml_node, document->xml_node_defs);
+    }
+
+    _cairo_output_stream_printf (document->xml_node_defs, "</g>\n");
+
+    status = cairo_surface_status (paginated_surface);
+    cairo_surface_destroy (paginated_surface);
+
+    return status;
+}
+
+static cairo_recording_surface_t *
+to_recording_surface (const cairo_surface_pattern_t *pattern)
+{
+    cairo_surface_t *surface = pattern->surface;
+    if (_cairo_surface_is_paginated (surface))
+	surface = _cairo_paginated_surface_get_recording (surface);
+    if (_cairo_surface_is_snapshot (surface))
+	surface = _cairo_surface_snapshot_get_target (surface);
+    return (cairo_recording_surface_t *) surface;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_composite_recording_pattern (cairo_output_stream_t	*output,
+						     cairo_svg_surface_t	*surface,
+						     cairo_operator_t	         op,
+						     cairo_surface_pattern_t	*pattern,
+						     int			 pattern_id,
+						     const cairo_matrix_t	*parent_matrix,
+						     const char			*extra_attributes)
+{
+    cairo_svg_document_t *document = surface->document;
+    cairo_recording_surface_t *recording_surface;
+    cairo_matrix_t p2u;
+    cairo_status_t status;
+    int source_id;
+    cairo_bool_t is_new;
+
+    p2u = pattern->base.matrix;
+    status = cairo_matrix_invert (&p2u);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    status = _cairo_svg_surface_add_source_surface (surface,
+						    pattern->surface,
+						    &source_id,
+						    &is_new);
+    if (unlikely (status))
+	return status;
+
+    recording_surface = to_recording_surface (pattern);
+    if (is_new) {
+	status = _cairo_svg_surface_emit_recording_surface (document, recording_surface, source_id);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (pattern_id != invalid_pattern_id) {
+	_cairo_output_stream_printf (output,
+				     "<pattern id=\"pattern%d\" "
+				     "patternUnits=\"userSpaceOnUse\" "
+				     "width=\"%d\" height=\"%d\"",
+				     pattern_id,
+				     recording_surface->extents.width,
+				     recording_surface->extents.height);
+	_cairo_svg_surface_emit_transform (output, " patternTransform", &p2u, parent_matrix);
+	_cairo_output_stream_printf (output, ">\n");
+    }
+
+    _cairo_output_stream_printf (output,
+				 "<use xlink:href=\"#surface%d\"",
+				 source_id);
+
+    if (pattern_id == invalid_pattern_id) {
+	_cairo_svg_surface_emit_operator (output, surface, op);
+	_cairo_svg_surface_emit_transform (output, " transform", &p2u, parent_matrix);
+    }
+
+    if (extra_attributes)
+	_cairo_output_stream_printf (output, " %s", extra_attributes);
+
+    _cairo_output_stream_printf (output, "/>\n");
+
+    if (pattern_id != invalid_pattern_id)
+	_cairo_output_stream_printf (output, "</pattern>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_composite_pattern (cairo_output_stream_t   *output,
+					   cairo_svg_surface_t	   *surface,
+					   cairo_operator_t	    op,
+					   cairo_surface_pattern_t *pattern,
+					   int			    pattern_id,
+					   const cairo_matrix_t	   *parent_matrix,
+					   const char		   *extra_attributes)
+{
+
+    if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
+	return _cairo_svg_surface_emit_composite_recording_pattern (output, surface,
+								    op, pattern,
+								    pattern_id,
+								    parent_matrix,
+								    extra_attributes);
+    }
+
+    return _cairo_svg_surface_emit_composite_surface_pattern (output, surface,
+							      op, pattern,
+							      pattern_id,
+							      parent_matrix,
+							      extra_attributes);
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_solid_pattern (cairo_svg_surface_t    *surface,
+				       cairo_solid_pattern_t  *pattern,
+				       cairo_output_stream_t  *style,
+				       cairo_bool_t	       is_stroke)
+{
+    _cairo_output_stream_printf (style, is_stroke ?
+				 "stroke:rgb(%f%%,%f%%,%f%%);stroke-opacity:%f;":
+				 "fill:rgb(%f%%,%f%%,%f%%);fill-opacity:%f;",
+				 pattern->color.red * 100.0,
+				 pattern->color.green * 100.0,
+				 pattern->color.blue * 100.0,
+				 pattern->color.alpha);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_surface_pattern (cairo_svg_surface_t	 *surface,
+					 cairo_surface_pattern_t *pattern,
+					 cairo_output_stream_t   *style,
+					 cairo_bool_t		  is_stroke,
+					 const cairo_matrix_t	 *parent_matrix)
+{
+    cairo_svg_document_t *document = surface->document;
+    cairo_status_t status;
+    int pattern_id;
+
+    pattern_id = document->pattern_id++;
+    status = _cairo_svg_surface_emit_composite_pattern (document->xml_node_defs,
+	                                                surface, CAIRO_OPERATOR_SOURCE, pattern,
+							pattern_id, parent_matrix, NULL);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (style,
+				 "%s:url(#pattern%d);",
+				 is_stroke ? "stroke" : "fill",
+				 pattern_id);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_pattern_stops (cairo_output_stream_t          *output,
+				       cairo_gradient_pattern_t const *pattern,
+				       double			       start_offset,
+				       cairo_bool_t		       reverse_stops,
+				       cairo_bool_t		       emulate_reflect)
+{
+    cairo_gradient_stop_t *stops;
+    double offset;
+    unsigned int n_stops;
+    unsigned int i;
+
+    if (pattern->n_stops < 1)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (pattern->n_stops == 1) {
+	    _cairo_output_stream_printf (output,
+					 "<stop offset=\"%f\" style=\""
+					 "stop-color:rgb(%f%%,%f%%,%f%%);"
+					 "stop-opacity:%f;\"/>\n",
+					 pattern->stops[0].offset,
+					 pattern->stops[0].color.red   * 100.0,
+					 pattern->stops[0].color.green * 100.0,
+					 pattern->stops[0].color.blue  * 100.0,
+					 pattern->stops[0].color.alpha);
+	    return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (emulate_reflect || reverse_stops) {
+	n_stops = emulate_reflect ? pattern->n_stops * 2 - 2: pattern->n_stops;
+	stops = _cairo_malloc_ab (n_stops, sizeof (cairo_gradient_stop_t));
+	if (unlikely (stops == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	for (i = 0; i < pattern->n_stops; i++) {
+	    if (reverse_stops) {
+		stops[i] = pattern->stops[pattern->n_stops - i - 1];
+		stops[i].offset = 1.0 - stops[i].offset;
+	    } else
+		stops[i] = pattern->stops[i];
+	    if (emulate_reflect) {
+		stops[i].offset /= 2;
+		if (i > 0 && i < (pattern->n_stops - 1)) {
+		    if (reverse_stops) {
+			stops[i + pattern->n_stops - 1] = pattern->stops[i];
+			stops[i + pattern->n_stops - 1].offset =
+			    0.5 + 0.5 * stops[i + pattern->n_stops - 1].offset;
+		    } else {
+			stops[i + pattern->n_stops - 1] = pattern->stops[pattern->n_stops - i - 1];
+			stops[i + pattern->n_stops - 1].offset =
+			    1 - 0.5 * stops[i + pattern->n_stops - 1].offset;
+		    }
+		}
+	    }
+	}
+    } else {
+	n_stops = pattern->n_stops;
+	stops = pattern->stops;
+    }
+
+    if (start_offset >= 0.0)
+	for (i = 0; i < n_stops; i++) {
+	    offset = start_offset + (1 - start_offset ) * stops[i].offset;
+	    _cairo_output_stream_printf (output,
+					 "<stop offset=\"%f\" style=\""
+					 "stop-color:rgb(%f%%,%f%%,%f%%);"
+					 "stop-opacity:%f;\"/>\n",
+					 offset,
+					 stops[i].color.red   * 100.0,
+					 stops[i].color.green * 100.0,
+					 stops[i].color.blue  * 100.0,
+					 stops[i].color.alpha);
+	}
+    else {
+	cairo_bool_t found = FALSE;
+	unsigned int offset_index;
+	cairo_color_stop_t offset_color_start, offset_color_stop;
+
+	for (i = 0; i < n_stops; i++) {
+	    if (stops[i].offset >= -start_offset) {
+		if (i > 0) {
+		    if (stops[i].offset != stops[i-1].offset) {
+			double x0, x1;
+			cairo_color_stop_t *color0, *color1;
+
+			x0 = stops[i-1].offset;
+			x1 = stops[i].offset;
+			color0 = &stops[i-1].color;
+			color1 = &stops[i].color;
+			offset_color_start.red = color0->red + (color1->red - color0->red)
+			    * (-start_offset - x0) / (x1 - x0);
+			offset_color_start.green = color0->green + (color1->green - color0->green)
+			    * (-start_offset - x0) / (x1 - x0);
+			offset_color_start.blue = color0->blue + (color1->blue - color0->blue)
+			    * (-start_offset - x0) / (x1 - x0);
+			offset_color_start.alpha = color0->alpha + (color1->alpha - color0->alpha)
+			    * (-start_offset - x0) / (x1 - x0);
+			offset_color_stop = offset_color_start;
+		    } else {
+			offset_color_stop = stops[i-1].color;
+			offset_color_start = stops[i].color;
+		    }
+		} else
+			offset_color_stop = offset_color_start = stops[i].color;
+	    offset_index = i;
+	    found = TRUE;
+	    break;
+	    }
+	}
+
+	if (!found) {
+	    offset_index = n_stops - 1;
+	    offset_color_stop = offset_color_start = stops[offset_index].color;
+	}
+
+	_cairo_output_stream_printf (output,
+				     "<stop offset=\"0\" style=\""
+				     "stop-color:rgb(%f%%,%f%%,%f%%);"
+				     "stop-opacity:%f;\"/>\n",
+				     offset_color_start.red   * 100.0,
+				     offset_color_start.green * 100.0,
+				     offset_color_start.blue  * 100.0,
+				     offset_color_start.alpha);
+	for (i = offset_index; i < n_stops; i++) {
+	    _cairo_output_stream_printf (output,
+					 "<stop offset=\"%f\" style=\""
+					 "stop-color:rgb(%f%%,%f%%,%f%%);"
+					 "stop-opacity:%f;\"/>\n",
+					 stops[i].offset + start_offset,
+					 stops[i].color.red   * 100.0,
+					 stops[i].color.green * 100.0,
+					 stops[i].color.blue  * 100.0,
+					 stops[i].color.alpha);
+	}
+	for (i = 0; i < offset_index; i++) {
+	    _cairo_output_stream_printf (output,
+					 "<stop offset=\"%f\" style=\""
+					 "stop-color:rgb(%f%%,%f%%,%f%%);"
+					 "stop-opacity:%f;\"/>\n",
+					 1.0 + stops[i].offset + start_offset,
+					 stops[i].color.red   * 100.0,
+					 stops[i].color.green * 100.0,
+					 stops[i].color.blue  * 100.0,
+					 stops[i].color.alpha);
+	}
+
+	_cairo_output_stream_printf (output,
+				     "<stop offset=\"1\" style=\""
+				     "stop-color:rgb(%f%%,%f%%,%f%%);"
+				     "stop-opacity:%f;\"/>\n",
+				     offset_color_stop.red   * 100.0,
+				     offset_color_stop.green * 100.0,
+				     offset_color_stop.blue  * 100.0,
+				     offset_color_stop.alpha);
+
+    }
+
+    if (reverse_stops || emulate_reflect)
+	free (stops);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_svg_surface_emit_pattern_extend (cairo_output_stream_t *output,
+					cairo_pattern_t       *pattern)
+{
+    switch (pattern->extend) {
+	case CAIRO_EXTEND_REPEAT:
+	    _cairo_output_stream_printf (output, "spreadMethod=\"repeat\" ");
+	    break;
+	case CAIRO_EXTEND_REFLECT:
+	    _cairo_output_stream_printf (output, "spreadMethod=\"reflect\" ");
+	    break;
+	case CAIRO_EXTEND_NONE:
+	case CAIRO_EXTEND_PAD:
+	    break;
+    }
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_linear_pattern (cairo_svg_surface_t    *surface,
+					cairo_linear_pattern_t *pattern,
+					cairo_output_stream_t  *style,
+					cairo_bool_t	        is_stroke,
+					const cairo_matrix_t   *parent_matrix)
+{
+    cairo_svg_document_t *document = surface->document;
+    cairo_matrix_t p2u;
+    cairo_status_t status;
+
+    p2u = pattern->base.base.matrix;
+    status = cairo_matrix_invert (&p2u);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "<linearGradient id=\"linear%d\" "
+				 "gradientUnits=\"userSpaceOnUse\" "
+				 "x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" ",
+				 document->linear_pattern_id,
+				 pattern->pd1.x, pattern->pd1.y,
+				 pattern->pd2.x, pattern->pd2.y);
+
+    _cairo_svg_surface_emit_pattern_extend (document->xml_node_defs, &pattern->base.base),
+    _cairo_svg_surface_emit_transform (document->xml_node_defs, "gradientTransform", &p2u, parent_matrix);
+    _cairo_output_stream_printf (document->xml_node_defs, ">\n");
+
+    status = _cairo_svg_surface_emit_pattern_stops (document->xml_node_defs,
+	                                            &pattern->base, 0.0,
+						    FALSE, FALSE);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "</linearGradient>\n");
+
+    _cairo_output_stream_printf (style,
+				 "%s:url(#linear%d);",
+				 is_stroke ? "stroke" : "fill",
+				 document->linear_pattern_id);
+
+    document->linear_pattern_id++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_radial_pattern (cairo_svg_surface_t    *surface,
+					cairo_radial_pattern_t *pattern,
+					cairo_output_stream_t  *style,
+					cairo_bool_t            is_stroke,
+					const cairo_matrix_t   *parent_matrix)
+{
+    cairo_svg_document_t *document = surface->document;
+    cairo_matrix_t p2u;
+    cairo_extend_t extend;
+    double x0, y0, x1, y1, r0, r1;
+    double fx, fy;
+    cairo_bool_t reverse_stops;
+    cairo_status_t status;
+    cairo_circle_double_t *c0, *c1;
+
+    extend = pattern->base.base.extend;
+
+    if (pattern->cd1.radius < pattern->cd2.radius) {
+	c0 = &pattern->cd1;
+	c1 = &pattern->cd2;
+	reverse_stops = FALSE;
+    } else {
+	c0 = &pattern->cd2;
+	c1 = &pattern->cd1;
+	reverse_stops = TRUE;
+    }
+
+    x0 = c0->center.x;
+    y0 = c0->center.y;
+    r0 = c0->radius;
+    x1 = c1->center.x;
+    y1 = c1->center.y;
+    r1 = c1->radius;
+
+    p2u = pattern->base.base.matrix;
+    status = cairo_matrix_invert (&p2u);
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    if (r0 == r1) {
+	unsigned int n_stops = pattern->base.n_stops;
+
+	_cairo_output_stream_printf (document->xml_node_defs,
+				     "<radialGradient id=\"radial%d\" "
+				     "gradientUnits=\"userSpaceOnUse\" "
+				     "cx=\"%f\" cy=\"%f\" "
+				     "fx=\"%f\" fy=\"%f\" r=\"%f\" ",
+				     document->radial_pattern_id,
+				     x1, y1,
+				     x1, y1, r1);
+	_cairo_svg_surface_emit_transform (document->xml_node_defs,
+					   "gradientTransform",
+					   &p2u, parent_matrix);
+	_cairo_output_stream_printf (document->xml_node_defs, ">\n");
+
+	if (extend == CAIRO_EXTEND_NONE || n_stops < 1)
+	    _cairo_output_stream_printf (document->xml_node_defs,
+					 "<stop offset=\"0\" style=\""
+					 "stop-color:rgb(0%%,0%%,0%%);"
+					 "stop-opacity:0;\"/>\n");
+	else {
+	    _cairo_output_stream_printf (document->xml_node_defs,
+					 "<stop offset=\"0\" style=\""
+					 "stop-color:rgb(%f%%,%f%%,%f%%);"
+					 "stop-opacity %f;\"/>\n",
+					 pattern->base.stops[0].color.red   * 100.0,
+					 pattern->base.stops[0].color.green * 100.0,
+					 pattern->base.stops[0].color.blue  * 100.0,
+					 pattern->base.stops[0].color.alpha);
+	    if (n_stops > 1)
+		_cairo_output_stream_printf (document->xml_node_defs,
+					     "<stop offset=\"0\" style=\""
+					     "stop-color:rgb(%f%%,%f%%,%f%%);"
+					     "stop-opacity:%f;\"/>\n",
+					     pattern->base.stops[n_stops - 1].color.red   * 100.0,
+					     pattern->base.stops[n_stops - 1].color.green * 100.0,
+					     pattern->base.stops[n_stops - 1].color.blue  * 100.0,
+					     pattern->base.stops[n_stops - 1].color.alpha);
+	}
+
+    } else {
+	double offset, r, x, y;
+	cairo_bool_t emulate_reflect = FALSE;
+
+	fx = (r1 * x0 - r0 * x1) / (r1 - r0);
+	fy = (r1 * y0 - r0 * y1) / (r1 - r0);
+
+	/* SVG doesn't support the inner circle and use instead a gradient focal.
+	 * That means we need to emulate the cairo behaviour by processing the
+	 * cairo gradient stops.
+	 * The CAIRO_EXTENT_NONE and CAIRO_EXTENT_PAD modes are quite easy to handle,
+	 * it's just a matter of stop position translation and calculation of
+	 * the corresponding SVG radial gradient focal.
+	 * The CAIRO_EXTENT_REFLECT and CAIRO_EXTEND_REPEAT modes require to compute a new
+	 * radial gradient, with an new outer circle, equal to r1 - r0 in the CAIRO_EXTEND_REPEAT
+	 * case, and 2 * (r1 - r0) in the CAIRO_EXTENT_REFLECT case, and a new gradient stop
+	 * list that maps to the original cairo stop list.
+	 */
+	if ((extend == CAIRO_EXTEND_REFLECT
+	     || extend == CAIRO_EXTEND_REPEAT)
+	    && r0 > 0.0) {
+	    double r_org = r1;
+
+	    if (extend == CAIRO_EXTEND_REFLECT) {
+		r1 = 2 * r1 - r0;
+		emulate_reflect = TRUE;
+	    }
+
+	    offset = fmod (r1, r1 - r0) / (r1 - r0) - 1.0;
+	    r = r1 - r0;
+
+	    /* New position of outer circle. */
+	    x = r * (x1 - fx) / r_org + fx;
+	    y = r * (y1 - fy) / r_org + fy;
+
+	    x1 = x;
+	    y1 = y;
+	    r1 = r;
+	    r0 = 0.0;
+	} else {
+	    offset = r0 / r1;
+	}
+
+	_cairo_output_stream_printf (document->xml_node_defs,
+				     "<radialGradient id=\"radial%d\" "
+				     "gradientUnits=\"userSpaceOnUse\" "
+				     "cx=\"%f\" cy=\"%f\" "
+				     "fx=\"%f\" fy=\"%f\" r=\"%f\" ",
+				     document->radial_pattern_id,
+				     x1, y1,
+				     fx, fy, r1);
+
+	if (emulate_reflect)
+	    _cairo_output_stream_printf (document->xml_node_defs, "spreadMethod=\"repeat\" ");
+	else
+	    _cairo_svg_surface_emit_pattern_extend (document->xml_node_defs, &pattern->base.base);
+	_cairo_svg_surface_emit_transform (document->xml_node_defs, "gradientTransform", &p2u, parent_matrix);
+	_cairo_output_stream_printf (document->xml_node_defs, ">\n");
+
+	/* To support cairo's EXTEND_NONE, (for which SVG has no similar
+	 * notion), we add transparent color stops on either end of the
+	 * user-provided stops. */
+	if (extend == CAIRO_EXTEND_NONE) {
+	    _cairo_output_stream_printf (document->xml_node_defs,
+					 "<stop offset=\"0\" style=\""
+					 "stop-color:rgb(0%%,0%%,0%%);"
+					 "stop-opacity:0;\"/>\n");
+	    if (r0 != 0.0)
+		_cairo_output_stream_printf (document->xml_node_defs,
+					     "<stop offset=\"%f\" style=\""
+					     "stop-color:rgb(0%%,0%%,0%%);"
+					     "stop-opacity:0;\"/>\n",
+					     r0 / r1);
+	}
+	status = _cairo_svg_surface_emit_pattern_stops (document->xml_node_defs,
+		                                        &pattern->base, offset,
+							reverse_stops,
+							emulate_reflect);
+	if (unlikely (status))
+	    return status;
+
+	if (pattern->base.base.extend == CAIRO_EXTEND_NONE)
+	    _cairo_output_stream_printf (document->xml_node_defs,
+					 "<stop offset=\"1.0\" style=\""
+					 "stop-color:rgb(0%%,0%%,0%%);"
+					 "stop-opacity:0;\"/>\n");
+    }
+
+    _cairo_output_stream_printf (document->xml_node_defs,
+				 "</radialGradient>\n");
+
+    _cairo_output_stream_printf (style,
+				 "%s:url(#radial%d);",
+				 is_stroke ? "stroke" : "fill",
+				 document->radial_pattern_id);
+
+    document->radial_pattern_id++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_pattern (cairo_svg_surface_t   *surface,
+				 const cairo_pattern_t       *pattern,
+				 cairo_output_stream_t *output,
+				 cairo_bool_t		is_stroke,
+				 const cairo_matrix_t  *parent_matrix)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _cairo_svg_surface_emit_solid_pattern (surface, (cairo_solid_pattern_t *) pattern,
+						      output, is_stroke);
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _cairo_svg_surface_emit_surface_pattern (surface, (cairo_surface_pattern_t *) pattern,
+							output, is_stroke, parent_matrix);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return _cairo_svg_surface_emit_linear_pattern (surface, (cairo_linear_pattern_t *) pattern,
+						       output, is_stroke, parent_matrix);
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _cairo_svg_surface_emit_radial_pattern (surface, (cairo_radial_pattern_t *) pattern,
+						       output, is_stroke, parent_matrix);
+
+    case CAIRO_PATTERN_TYPE_MESH:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	ASSERT_NOT_REACHED;
+    }
+    return _cairo_error (CAIRO_STATUS_PATTERN_TYPE_MISMATCH);
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_fill_style (cairo_output_stream_t	*output,
+				    cairo_svg_surface_t		*surface,
+				    cairo_operator_t		 op,
+				    const cairo_pattern_t	*source,
+				    cairo_fill_rule_t		 fill_rule,
+				    const cairo_matrix_t	*parent_matrix)
+{
+    _cairo_output_stream_printf (output,
+				 "fill-rule:%s;",
+				 fill_rule == CAIRO_FILL_RULE_EVEN_ODD ?
+				 "evenodd" : "nonzero");
+    _cairo_svg_surface_emit_operator_for_style (output, surface, op);
+    return _cairo_svg_surface_emit_pattern (surface, source, output, FALSE, parent_matrix);
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_stroke_style (cairo_output_stream_t	   *output,
+				      cairo_svg_surface_t	   *surface,
+				      cairo_operator_t		    op,
+				      const cairo_pattern_t	   *source,
+				      const cairo_stroke_style_t   *stroke_style,
+				      const cairo_matrix_t	   *parent_matrix)
+{
+    cairo_status_t status;
+    const char *line_cap, *line_join;
+    unsigned int i;
+
+    switch (stroke_style->line_cap) {
+	case CAIRO_LINE_CAP_BUTT:
+	    line_cap = "butt";
+	    break;
+	case CAIRO_LINE_CAP_ROUND:
+	    line_cap = "round";
+	    break;
+	case CAIRO_LINE_CAP_SQUARE:
+	    line_cap = "square";
+	    break;
+	default:
+	    ASSERT_NOT_REACHED;
+    }
+
+    switch (stroke_style->line_join) {
+	case CAIRO_LINE_JOIN_MITER:
+	    line_join = "miter";
+	    break;
+	case CAIRO_LINE_JOIN_ROUND:
+	    line_join = "round";
+	    break;
+	case CAIRO_LINE_JOIN_BEVEL:
+	    line_join = "bevel";
+	    break;
+	default:
+	    ASSERT_NOT_REACHED;
+    }
+
+    _cairo_output_stream_printf (output,
+				 "stroke-width:%f;"
+				 "stroke-linecap:%s;"
+				 "stroke-linejoin:%s;",
+				 stroke_style->line_width,
+				 line_cap,
+				 line_join);
+
+     status = _cairo_svg_surface_emit_pattern (surface, source, output, TRUE, parent_matrix);
+     if (unlikely (status))
+	 return status;
+
+     _cairo_svg_surface_emit_operator_for_style (output, surface, op);
+
+    if (stroke_style->num_dashes > 0) {
+	_cairo_output_stream_printf (output, "stroke-dasharray:");
+	for (i = 0; i < stroke_style->num_dashes; i++) {
+	    _cairo_output_stream_printf (output, "%f",
+					 stroke_style->dash[i]);
+	    if (i + 1 < stroke_style->num_dashes)
+		_cairo_output_stream_printf (output, ",");
+	    else
+		_cairo_output_stream_printf (output, ";");
+	}
+	if (stroke_style->dash_offset != 0.0) {
+	    _cairo_output_stream_printf (output,
+					 "stroke-dashoffset:%f;",
+					 stroke_style->dash_offset);
+	}
+    }
+
+    _cairo_output_stream_printf (output,
+				 "stroke-miterlimit:%f;",
+				 stroke_style->miter_limit);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_fill_stroke (void			*abstract_surface,
+				cairo_operator_t	 fill_op,
+				const cairo_pattern_t	*fill_source,
+				cairo_fill_rule_t	 fill_rule,
+				double			 fill_tolerance,
+				cairo_antialias_t	 fill_antialias,
+				const cairo_path_fixed_t*path,
+				cairo_operator_t	 stroke_op,
+				const cairo_pattern_t	*stroke_source,
+				const cairo_stroke_style_t	*stroke_style,
+				const cairo_matrix_t		*stroke_ctm,
+				const cairo_matrix_t		*stroke_ctm_inverse,
+				double			 stroke_tolerance,
+				cairo_antialias_t	 stroke_antialias,
+				const cairo_clip_t	*clip)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->xml_node, "<path style=\"");
+    status = _cairo_svg_surface_emit_fill_style (surface->xml_node, surface, fill_op,
+						 fill_source, fill_rule, stroke_ctm_inverse);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_svg_surface_emit_stroke_style (surface->xml_node, surface, stroke_op,
+						   stroke_source, stroke_style, stroke_ctm_inverse);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->xml_node, "\" ");
+
+    _cairo_svg_surface_emit_path (surface->xml_node, path, stroke_ctm_inverse);
+
+    _cairo_svg_surface_emit_transform (surface->xml_node, " transform", stroke_ctm, NULL);
+    _cairo_output_stream_printf (surface->xml_node, "/>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_fill (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_path_fixed_t*path,
+			 cairo_fill_rule_t	 fill_rule,
+			 double			 tolerance,
+			 cairo_antialias_t	 antialias,
+			 const cairo_clip_t	*clip)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return _cairo_svg_surface_analyze_operation (surface, op, source);
+
+    assert (_cairo_svg_surface_operation_supported (surface, op, source));
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->xml_node, "<path style=\" stroke:none;");
+    status = _cairo_svg_surface_emit_fill_style (surface->xml_node, surface, op, source, fill_rule, NULL);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->xml_node, "\" ");
+
+    _cairo_svg_surface_emit_path (surface->xml_node, path, NULL);
+
+    _cairo_output_stream_printf (surface->xml_node, "/>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_svg_surface_get_extents (void		        *abstract_surface,
+				cairo_rectangle_int_t   *rectangle)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+
+    /* XXX: The conversion to integers here is pretty bogus, (not to
+     * mention the arbitrary limitation of width to a short(!). We
+     * may need to come up with a better interface for get_size.
+     */
+    rectangle->width  = ceil (surface->width);
+    rectangle->height = ceil (surface->height);
+
+    return surface->surface_bounded;
+}
+
+static cairo_status_t
+_cairo_svg_surface_emit_paint (cairo_output_stream_t *output,
+			       cairo_svg_surface_t   *surface,
+			       cairo_operator_t	      op,
+			       const cairo_pattern_t	     *source,
+			       const cairo_pattern_t	     *mask_source,
+			       const char	     *extra_attributes)
+{
+    cairo_status_t status;
+
+    if (source->type == CAIRO_PATTERN_TYPE_SURFACE &&
+	source->extend == CAIRO_EXTEND_NONE)
+	return _cairo_svg_surface_emit_composite_pattern (output,
+							  surface,
+							  op,
+							  (cairo_surface_pattern_t *) source,
+							  invalid_pattern_id,
+							  mask_source ? &mask_source->matrix :NULL,
+							  extra_attributes);
+
+    _cairo_output_stream_printf (output,
+				 "<rect x=\"0\" y=\"0\" "
+				 "width=\"%f\" height=\"%f\" "
+				 "style=\"",
+				 surface->width, surface->height);
+    _cairo_svg_surface_emit_operator_for_style (output, surface, op);
+    status = _cairo_svg_surface_emit_pattern (surface, source, output, FALSE, NULL);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (output, "stroke:none;\"");
+
+    if (extra_attributes)
+	_cairo_output_stream_printf (output, " %s", extra_attributes);
+
+    _cairo_output_stream_printf (output, "/>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_paint (void		    *abstract_surface,
+			  cairo_operator_t   op,
+			  const cairo_pattern_t   *source,
+			  const cairo_clip_t	  *clip)
+{
+    cairo_status_t status;
+    cairo_svg_surface_t *surface = abstract_surface;
+
+    /* Emulation of clear and source operators, when no clipping region
+     * is defined. We just delete existing content of surface root node,
+     * and exit early if operator is clear.
+     */
+    if ((op == CAIRO_OPERATOR_CLEAR || op == CAIRO_OPERATOR_SOURCE) &&
+	clip == NULL)
+    {
+	switch (surface->paginated_mode) {
+	case CAIRO_PAGINATED_MODE_FALLBACK:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_PAGINATED_MODE_ANALYZE:
+	    return CAIRO_STATUS_SUCCESS;
+
+	case CAIRO_PAGINATED_MODE_RENDER:
+	    status = _cairo_output_stream_destroy (surface->xml_node);
+	    if (unlikely (status)) {
+		surface->xml_node = NULL;
+		return status;
+	    }
+
+	    surface->xml_node = _cairo_memory_stream_create ();
+	    if (_cairo_output_stream_get_status (surface->xml_node)) {
+		status = _cairo_output_stream_destroy (surface->xml_node);
+		surface->xml_node = NULL;
+		return status;
+	    }
+
+	    if (op == CAIRO_OPERATOR_CLEAR) {
+		if (surface->content == CAIRO_CONTENT_COLOR) {
+		    _cairo_output_stream_printf (surface->xml_node,
+						 "<rect "
+						 "width=\"%f\" height=\"%f\" "
+						 "style=\"opacity:1;"
+						 "stroke:none;"
+						 "fill:rgb(0,0,0);\"/>\n",
+						 surface->width, surface->height);
+		}
+		return CAIRO_STATUS_SUCCESS;
+	    }
+	    break;
+	}
+    } else {
+	if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	    return _cairo_svg_surface_analyze_operation (surface, op, source);
+
+	assert (_cairo_svg_surface_operation_supported (surface, op, source));
+    }
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_svg_surface_emit_paint (surface->xml_node,
+					  surface, op, source, 0, NULL);
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_mask (void		    *abstract_surface,
+			 cairo_operator_t     op,
+			 const cairo_pattern_t	    *source,
+			 const cairo_pattern_t	    *mask,
+			 const cairo_clip_t	    *clip)
+{
+    cairo_status_t status;
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_svg_document_t *document = surface->document;
+    cairo_output_stream_t *mask_stream;
+    char buffer[64];
+    cairo_bool_t discard_filter = FALSE;
+    unsigned int mask_id;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	cairo_status_t source_status, mask_status;
+
+	source_status = _cairo_svg_surface_analyze_operation (surface, op, source);
+	if (_cairo_status_is_error (source_status))
+	    return source_status;
+
+	if (mask->has_component_alpha) {
+	    mask_status = CAIRO_INT_STATUS_UNSUPPORTED;
+	} else {
+	    mask_status = _cairo_svg_surface_analyze_operation (surface, op, mask);
+	    if (_cairo_status_is_error (mask_status))
+		return mask_status;
+	}
+
+	return _cairo_analysis_surface_merge_status (source_status,
+						     mask_status);
+    }
+
+    assert (_cairo_svg_surface_operation_supported (surface, op, source));
+    assert (_cairo_svg_surface_operation_supported (surface, CAIRO_OPERATOR_OVER, mask));
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	const cairo_surface_pattern_t *surface_pattern = (const cairo_surface_pattern_t*) mask;
+	cairo_content_t content = surface_pattern->surface->content;
+	if (content == CAIRO_CONTENT_ALPHA)
+	    discard_filter = TRUE;
+    }
+
+    if (!discard_filter)
+	_cairo_svg_surface_emit_alpha_filter (document);
+
+    /* _cairo_svg_surface_emit_paint() will output a pattern definition to
+     * document->xml_node_defs so we need to write the mask element to
+     * a temporary stream and then copy that to xml_node_defs. */
+    mask_stream = _cairo_memory_stream_create ();
+    if (_cairo_output_stream_get_status (mask_stream))
+	return _cairo_output_stream_destroy (mask_stream);
+
+    mask_id = _cairo_svg_document_allocate_mask_id (document);
+
+    _cairo_output_stream_printf (mask_stream,
+				 "<mask id=\"mask%d\">\n"
+				 "%s",
+				 mask_id,
+				 discard_filter ? "" : "  <g filter=\"url(#alpha)\">\n");
+    status = _cairo_svg_surface_emit_paint (mask_stream, surface, CAIRO_OPERATOR_OVER, mask, source, NULL);
+    if (unlikely (status)) {
+	cairo_status_t ignore = _cairo_output_stream_destroy (mask_stream);
+	return status;
+	(void) ignore;
+    }
+
+    _cairo_output_stream_printf (mask_stream,
+				 "%s"
+				 "</mask>\n",
+				 discard_filter ? "" : "  </g>\n");
+    _cairo_memory_stream_copy (mask_stream, document->xml_node_defs);
+
+    status = _cairo_output_stream_destroy (mask_stream);
+    if (unlikely (status))
+	return status;
+
+    snprintf (buffer, sizeof buffer, "mask=\"url(#mask%d)\"",
+	      mask_id);
+    status = _cairo_svg_surface_emit_paint (surface->xml_node, surface, op, source, 0, buffer);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_stroke (void			*abstract_dst,
+			   cairo_operator_t      op,
+			   const cairo_pattern_t *source,
+			   const cairo_path_fixed_t*path,
+			   const cairo_stroke_style_t *stroke_style,
+			   const cairo_matrix_t	*ctm,
+			   const cairo_matrix_t	*ctm_inverse,
+			   double		 tolerance,
+			   cairo_antialias_t	 antialias,
+			   const cairo_clip_t	*clip)
+{
+    cairo_svg_surface_t *surface = abstract_dst;
+    cairo_status_t status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return _cairo_svg_surface_analyze_operation (surface, op, source);
+
+    assert (_cairo_svg_surface_operation_supported (surface, op, source));
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->xml_node, "<path style=\"fill:none;");
+    status = _cairo_svg_surface_emit_stroke_style (surface->xml_node, surface, op,
+						   source, stroke_style, ctm_inverse);
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->xml_node, "\" ");
+
+    _cairo_svg_surface_emit_path (surface->xml_node, path, ctm_inverse);
+
+    _cairo_svg_surface_emit_transform (surface->xml_node, " transform", ctm, NULL);
+    _cairo_output_stream_printf (surface->xml_node, "/>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_show_glyphs (void			*abstract_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*pattern,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t	*clip)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_svg_document_t *document = surface->document;
+    cairo_path_fixed_t path;
+    cairo_int_status_t status;
+    cairo_scaled_font_subsets_glyph_t subset_glyph;
+    int i;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return _cairo_svg_surface_analyze_operation (surface, op, pattern);
+
+    assert (_cairo_svg_surface_operation_supported (surface, op, pattern));
+
+    if (num_glyphs <= 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    /* FIXME it's probably possible to apply a pattern of a gradient to
+     * a group of symbols, but I don't know how yet. Gradients or patterns
+     * are translated by x and y properties of use element. */
+    if (pattern->type != CAIRO_PATTERN_TYPE_SOLID)
+	goto FALLBACK;
+
+    _cairo_output_stream_printf (surface->xml_node, "<g style=\"");
+    status = _cairo_svg_surface_emit_pattern (surface, pattern,
+	                                      surface->xml_node, FALSE, NULL);
+    if (unlikely (status))
+	return status;
+
+    _cairo_svg_surface_emit_operator_for_style (surface->xml_node, surface, op);
+
+    _cairo_output_stream_printf (surface->xml_node, "\">\n");
+
+    for (i = 0; i < num_glyphs; i++) {
+	status = _cairo_scaled_font_subsets_map_glyph (document->font_subsets,
+						       scaled_font, glyphs[i].index,
+						       NULL, 0,
+                                                       &subset_glyph);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	    _cairo_output_stream_printf (surface->xml_node, "</g>\n");
+
+	    glyphs += i;
+	    num_glyphs -= i;
+	    goto FALLBACK;
+	}
+
+	if (unlikely (status))
+	    return status;
+
+	_cairo_output_stream_printf (surface->xml_node,
+				     "  <use xlink:href=\"#glyph%d-%d\" "
+				     "x=\"%f\" y=\"%f\"/>\n",
+				     subset_glyph.font_id,
+                                     subset_glyph.subset_glyph_index,
+				     glyphs[i].x, glyphs[i].y);
+    }
+
+    _cairo_output_stream_printf (surface->xml_node, "</g>\n");
+
+    return CAIRO_STATUS_SUCCESS;
+
+FALLBACK:
+    _cairo_path_fixed_init (&path);
+
+    status = _cairo_scaled_font_glyph_path (scaled_font,
+					    (cairo_glyph_t *) glyphs,
+					    num_glyphs, &path);
+
+    if (unlikely (status)) {
+	_cairo_path_fixed_fini (&path);
+	return status;
+    }
+
+    status = _cairo_svg_surface_fill (abstract_surface, op, pattern,
+				      &path, CAIRO_FILL_RULE_WINDING,
+				      0.0, CAIRO_ANTIALIAS_SUBPIXEL,
+				      clip);
+
+    _cairo_path_fixed_fini (&path);
+
+    return status;
+}
+
+static void
+_cairo_svg_surface_get_font_options (void                  *abstract_surface,
+				     cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
+    cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
+    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_OFF);
+}
+
+
+static const char **
+_cairo_svg_surface_get_supported_mime_types (void	   *abstract_surface)
+{
+    return _cairo_svg_supported_mime_types;
+}
+
+static const cairo_surface_backend_t cairo_svg_surface_backend = {
+	CAIRO_SURFACE_TYPE_SVG,
+	_cairo_svg_surface_finish,
+
+	_cairo_default_context_create,
+
+	NULL, /* create_similar: handled by wrapper */
+	NULL, /* create_similar_image */
+	NULL, /* map to image */
+	NULL, /* unmap image */
+
+	_cairo_surface_default_source,
+	NULL, /* acquire_source_image */
+	NULL, /* release_source_image */
+	NULL, /* snapshot */
+
+	_cairo_svg_surface_copy_page,
+	_cairo_svg_surface_show_page,
+
+	_cairo_svg_surface_get_extents,
+	_cairo_svg_surface_get_font_options,
+
+	NULL, /* flush */
+	NULL, /* mark dirty rectangle */
+
+	_cairo_svg_surface_paint,
+	_cairo_svg_surface_mask,
+	_cairo_svg_surface_stroke,
+	_cairo_svg_surface_fill,
+	_cairo_svg_surface_fill_stroke,
+	_cairo_svg_surface_show_glyphs,
+	NULL, /* has_show_text_glyphs */
+	NULL, /* show_text_glyphs */
+	_cairo_svg_surface_get_supported_mime_types,
+};
+
+static cairo_status_t
+_cairo_svg_document_create (cairo_output_stream_t	 *output_stream,
+			    double			  width,
+			    double			  height,
+			    cairo_svg_version_t		  version,
+			    cairo_svg_document_t	**document_out)
+{
+    cairo_svg_document_t *document;
+    cairo_status_t status, status_ignored;
+
+    if (output_stream->status)
+	return output_stream->status;
+
+    document = _cairo_malloc (sizeof (cairo_svg_document_t));
+    if (unlikely (document == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* The use of defs for font glyphs imposes no per-subset limit. */
+    document->font_subsets = _cairo_scaled_font_subsets_create_scaled ();
+    if (unlikely (document->font_subsets == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_DOCUMENT;
+    }
+
+    document->output_stream = output_stream;
+    document->refcount = 1;
+    document->owner = NULL;
+    document->finished = FALSE;
+    document->width = width;
+    document->height = height;
+    document->unit = CAIRO_SVG_UNIT_PT;
+
+    document->linear_pattern_id = 0;
+    document->radial_pattern_id = 0;
+    document->pattern_id = 0;
+    document->filter_id = 0;
+    document->clip_id = 0;
+    document->mask_id = 0;
+
+    document->xml_node_defs = _cairo_memory_stream_create ();
+    status = _cairo_output_stream_get_status (document->xml_node_defs);
+    if (unlikely (status))
+	goto CLEANUP_NODE_DEFS;
+
+    document->xml_node_glyphs = _cairo_memory_stream_create ();
+    status = _cairo_output_stream_get_status (document->xml_node_glyphs);
+    if (unlikely (status))
+	goto CLEANUP_NODE_GLYPHS;
+
+    document->alpha_filter = FALSE;
+
+    document->svg_version = version;
+
+    *document_out = document;
+    return CAIRO_STATUS_SUCCESS;
+
+  CLEANUP_NODE_GLYPHS:
+    status_ignored = _cairo_output_stream_destroy (document->xml_node_glyphs);
+  CLEANUP_NODE_DEFS:
+    status_ignored = _cairo_output_stream_destroy (document->xml_node_defs);
+    _cairo_scaled_font_subsets_destroy (document->font_subsets);
+  CLEANUP_DOCUMENT:
+    free (document);
+    return status;
+}
+
+static cairo_svg_document_t *
+_cairo_svg_document_reference (cairo_svg_document_t *document)
+{
+    document->refcount++;
+
+    return document;
+}
+
+static unsigned int
+_cairo_svg_document_allocate_mask_id (cairo_svg_document_t *document)
+{
+    return document->mask_id++;
+}
+
+static cairo_status_t
+_cairo_svg_document_destroy (cairo_svg_document_t *document)
+{
+    cairo_status_t status;
+
+    document->refcount--;
+    if (document->refcount > 0)
+      return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_svg_document_finish (document);
+
+    free (document);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_svg_document_finish (cairo_svg_document_t *document)
+{
+    cairo_status_t status, status2;
+    cairo_output_stream_t *output = document->output_stream;
+    cairo_svg_page_t *page;
+    unsigned int i;
+
+    if (document->finished)
+	return CAIRO_STATUS_SUCCESS;
+
+    /*
+     * Should we add DOCTYPE?
+     *
+     * Google says no.
+     *
+     * http://tech.groups.yahoo.com/group/svg-developers/message/48562:
+     *   There's a bunch of issues, but just to pick a few:
+     *   - they'll give false positives.
+     *   - they'll give false negatives.
+     *   - they're namespace-unaware.
+     *   - they don't wildcard.
+     *   So when they say OK they really haven't checked anything, when
+     *   they say NOT OK they might be on crack, and like all
+     *   namespace-unaware things they're a dead branch of the XML tree.
+     *
+     * http://jwatt.org/svg/authoring/:
+     *   Unfortunately the SVG DTDs are a source of so many issues that the
+     *   SVG WG has decided not to write one for the upcoming SVG 1.2
+     *   standard. In fact SVG WG members are even telling people not to use
+     *   a DOCTYPE declaration in SVG 1.0 and 1.1 documents.
+     */
+
+    _cairo_output_stream_printf (output,
+				 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+				 "<svg xmlns=\"http://www.w3.org/2000/svg\" "
+				 "xmlns:xlink=\"http://www.w3.org/1999/xlink\" "
+				 "width=\"%f%s\" height=\"%f%s\" "
+				 "viewBox=\"0 0 %f %f\" version=\"%s\">\n",
+				 document->width, _cairo_svg_unit_strings [document->unit],
+				 document->height, _cairo_svg_unit_strings [document->unit],
+				 document->width, document->height,
+				 _cairo_svg_internal_version_strings [document->svg_version]);
+
+    status = _cairo_svg_document_emit_font_subsets (document);
+
+    if (_cairo_memory_stream_length (document->xml_node_glyphs) > 0 ||
+	_cairo_memory_stream_length (document->xml_node_defs) > 0) {
+	_cairo_output_stream_printf (output, "<defs>\n");
+	if (_cairo_memory_stream_length (document->xml_node_glyphs) > 0) {
+	    _cairo_output_stream_printf (output, "<g>\n");
+	    _cairo_memory_stream_copy (document->xml_node_glyphs, output);
+	    _cairo_output_stream_printf (output, "</g>\n");
+	}
+	_cairo_memory_stream_copy (document->xml_node_defs, output);
+	_cairo_output_stream_printf (output, "</defs>\n");
+    }
+
+    if (document->owner != NULL) {
+	cairo_svg_surface_t *surface;
+
+	surface = (cairo_svg_surface_t *) _cairo_paginated_surface_get_target (document->owner);
+	if (surface->xml_node != NULL &&
+		_cairo_memory_stream_length (surface->xml_node) > 0) {
+	    if (unlikely (_cairo_svg_surface_store_page (surface) == NULL)) {
+		if (status == CAIRO_STATUS_SUCCESS)
+		    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+	}
+
+	if (surface->page_set.num_elements > 1 &&
+	    _cairo_svg_version_has_page_set_support (document->svg_version)) {
+	    _cairo_output_stream_printf (output, "<pageSet>\n");
+	    for (i = 0; i < surface->page_set.num_elements; i++) {
+		page = _cairo_array_index (&surface->page_set, i);
+		_cairo_output_stream_printf (output, "<page>\n");
+		_cairo_output_stream_printf (output,
+					     "<g id=\"surface%d\">\n",
+					     page->surface_id);
+		_cairo_memory_stream_copy (page->xml_node, output);
+		_cairo_output_stream_printf (output, "</g>\n</page>\n");
+	    }
+	    _cairo_output_stream_printf (output, "</pageSet>\n");
+	} else if (surface->page_set.num_elements > 0) {
+	    page = _cairo_array_index (&surface->page_set, surface->page_set.num_elements - 1);
+	    _cairo_output_stream_printf (output,
+					 "<g id=\"surface%d\">\n",
+					 page->surface_id);
+	    _cairo_memory_stream_copy (page->xml_node, output);
+	    _cairo_output_stream_printf (output, "</g>\n");
+	}
+    }
+
+    _cairo_output_stream_printf (output, "</svg>\n");
+
+    status2 = _cairo_output_stream_destroy (document->xml_node_glyphs);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    status2 = _cairo_output_stream_destroy (document->xml_node_defs);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    status2 = _cairo_output_stream_destroy (output);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    document->finished = TRUE;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_svg_surface_set_paginated_mode (void			*abstract_surface,
+				       cairo_paginated_mode_t	 paginated_mode)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+
+    surface->paginated_mode = paginated_mode;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_svg_surface_supports_fine_grained_fallbacks (void	*abstract_surface)
+{
+    cairo_svg_surface_t *surface = abstract_surface;
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface->document->svg_version >= CAIRO_SVG_VERSION_1_2) {
+	status =  _cairo_svg_surface_analyze_operator (surface,
+						       CAIRO_OPERATOR_SOURCE);
+    }
+
+    return status == CAIRO_INT_STATUS_SUCCESS;
+}
+
+static const cairo_paginated_surface_backend_t cairo_svg_surface_paginated_backend = {
+    NULL /*_cairo_svg_surface_start_page*/,
+    _cairo_svg_surface_set_paginated_mode,
+    NULL, /* _cairo_svg_surface_set_bounding_box */
+    NULL, /* _cairo_svg_surface_set_fallback_images_required */
+    _cairo_svg_surface_supports_fine_grained_fallbacks,
+
+};
diff --git a/libs/cairo-1.16.0/src/cairo-svg.h b/libs/cairo-1.16.0/src/cairo-svg.h
new file mode 100644
index 0000000..4d24857
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-svg.h
@@ -0,0 +1,131 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * cairo-svg.h
+ *
+ * Copyright © 2005 Emmanuel Pacaud <emmanuel.pacaud@univ-poitiers.fr>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#ifndef CAIRO_SVG_H
+#define CAIRO_SVG_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_SVG_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+/**
+ * cairo_svg_version_t:
+ * @CAIRO_SVG_VERSION_1_1: The version 1.1 of the SVG specification. (Since 1.2)
+ * @CAIRO_SVG_VERSION_1_2: The version 1.2 of the SVG specification. (Since 1.2)
+ *
+ * #cairo_svg_version_t is used to describe the version number of the SVG
+ * specification that a generated SVG file will conform to.
+ *
+ * Since: 1.2
+ **/
+typedef enum _cairo_svg_version {
+    CAIRO_SVG_VERSION_1_1,
+    CAIRO_SVG_VERSION_1_2
+} cairo_svg_version_t;
+
+/**
+ * cairo_svg_unit_t:
+ *
+ * @CAIRO_SVG_UNIT_USER: User unit, a value in the current coordinate system.
+ *   If used in the root element for the initial coordinate systems it
+ *   corresponds to pixels. (Since 1.16)
+ * @CAIRO_SVG_UNIT_EM: The size of the element's font. (Since 1.16)
+ * @CAIRO_SVG_UNIT_EX: The x-height of the element’s font. (Since 1.16)
+ * @CAIRO_SVG_UNIT_PX: Pixels (1px = 1/96th of 1in). (Since 1.16)
+ * @CAIRO_SVG_UNIT_IN: Inches (1in = 2.54cm = 96px). (Since 1.16)
+ * @CAIRO_SVG_UNIT_CM: Centimeters (1cm = 96px/2.54). (Since 1.16)
+ * @CAIRO_SVG_UNIT_MM: Millimeters (1mm = 1/10th of 1cm). (Since 1.16)
+ * @CAIRO_SVG_UNIT_PT: Points (1pt = 1/72th of 1in). (Since 1.16)
+ * @CAIRO_SVG_UNIT_PC: Picas (1pc = 1/6th of 1in). (Since 1.16)
+ * @CAIRO_SVG_UNIT_PERCENT: Percent, a value that is some fraction of another
+ *   reference value. (Since 1.16)
+ *
+ * #cairo_svg_unit_t is used to describe the units valid for coordinates and
+ * lengths in the SVG specification.
+ *
+ * See also:
+ * https://www.w3.org/TR/SVG/coords.html#Units
+ * https://www.w3.org/TR/SVG/types.html#DataTypeLength
+ * https://www.w3.org/TR/css-values-3/#lengths
+ *
+ * Since: 1.16
+ **/
+typedef enum _cairo_svg_unit {
+    CAIRO_SVG_UNIT_USER = 0,
+    CAIRO_SVG_UNIT_EM,
+    CAIRO_SVG_UNIT_EX,
+    CAIRO_SVG_UNIT_PX,
+    CAIRO_SVG_UNIT_IN,
+    CAIRO_SVG_UNIT_CM,
+    CAIRO_SVG_UNIT_MM,
+    CAIRO_SVG_UNIT_PT,
+    CAIRO_SVG_UNIT_PC,
+    CAIRO_SVG_UNIT_PERCENT
+} cairo_svg_unit_t;
+
+cairo_public cairo_surface_t *
+cairo_svg_surface_create (const char   *filename,
+			  double	width_in_points,
+			  double	height_in_points);
+
+cairo_public cairo_surface_t *
+cairo_svg_surface_create_for_stream (cairo_write_func_t	write_func,
+				     void	       *closure,
+				     double		width_in_points,
+				     double		height_in_points);
+
+cairo_public void
+cairo_svg_surface_restrict_to_version (cairo_surface_t 		*surface,
+				       cairo_svg_version_t  	 version);
+
+cairo_public void
+cairo_svg_get_versions (cairo_svg_version_t const	**versions,
+                        int                      	 *num_versions);
+
+cairo_public const char *
+cairo_svg_version_to_string (cairo_svg_version_t version);
+
+cairo_public void
+cairo_svg_surface_set_document_unit (cairo_surface_t	*surface,
+				     cairo_svg_unit_t	 unit);
+
+cairo_public cairo_svg_unit_t
+cairo_svg_surface_get_document_unit (cairo_surface_t	*surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_SVG_SURFACE */
+# error Cairo was not compiled with support for the svg backend
+#endif /* CAIRO_HAS_SVG_SURFACE */
+
+#endif /* CAIRO_SVG_H */
diff --git a/libs/cairo-1.16.0/src/cairo-tag-attributes-private.h b/libs/cairo-1.16.0/src/cairo-tag-attributes-private.h
new file mode 100644
index 0000000..3f5fa5b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tag-attributes-private.h
@@ -0,0 +1,99 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2016 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_TAG_ATTRIBUTES_PRIVATE_H
+#define CAIRO_TAG_ATTRIBUTES_PRIVATE_H
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+#include "cairo-types-private.h"
+
+typedef enum {
+    TAG_LINK_INVALID = 0,
+    TAG_LINK_EMPTY,
+    TAG_LINK_DEST,
+    TAG_LINK_URI,
+    TAG_LINK_FILE,
+} cairo_tag_link_type_t;
+
+typedef struct _cairo_link_attrs {
+    cairo_tag_link_type_t link_type;
+    cairo_array_t rects;
+    char *dest;
+    char *uri;
+    char *file;
+    int page;
+    cairo_bool_t has_pos;
+    cairo_point_double_t pos;
+} cairo_link_attrs_t;
+
+typedef struct _cairo_dest_attrs {
+    char *name;
+    double x;
+    double y;
+    cairo_bool_t x_valid;
+    cairo_bool_t y_valid;
+    cairo_bool_t internal;
+} cairo_dest_attrs_t;
+
+typedef struct _cairo_ccitt_params {
+    int columns;
+    int rows;
+    int k;
+    cairo_bool_t end_of_line;
+    cairo_bool_t encoded_byte_align;
+    cairo_bool_t end_of_block;
+    cairo_bool_t black_is_1;
+    int damaged_rows_before_error;
+} cairo_ccitt_params_t;
+
+typedef struct _cairo_eps_params {
+    cairo_box_double_t bbox;
+} cairo_eps_params_t;
+
+cairo_private cairo_int_status_t
+_cairo_tag_parse_link_attributes (const char *attributes, cairo_link_attrs_t *link_attrs);
+
+cairo_private cairo_int_status_t
+_cairo_tag_parse_dest_attributes (const char *attributes, cairo_dest_attrs_t *dest_attrs);
+
+cairo_private cairo_int_status_t
+_cairo_tag_parse_ccitt_params (const char *attributes, cairo_ccitt_params_t *dest_attrs);
+
+cairo_private cairo_int_status_t
+_cairo_tag_parse_eps_params (const char *attributes, cairo_eps_params_t *dest_attrs);
+
+#endif /* CAIRO_TAG_ATTRIBUTES_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-tag-attributes.c b/libs/cairo-1.16.0/src/cairo-tag-attributes.c
new file mode 100644
index 0000000..44b1147
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tag-attributes.c
@@ -0,0 +1,702 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2016 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-tag-attributes-private.h"
+
+#include <string.h>
+
+typedef enum {
+    ATTRIBUTE_BOOL,  /* Either true/false or 1/0 may be used. */
+    ATTRIBUTE_INT,
+    ATTRIBUTE_FLOAT, /* Decimal separator is in current locale. */
+    ATTRIBUTE_STRING, /* Enclose in single quotes. String escapes:
+                       *   \'  - single quote
+                       *   \\  - backslash
+                       */
+} attribute_type_t;
+
+typedef struct _attribute_spec {
+    const char *name;
+    attribute_type_t type;
+    int array_size; /* 0 = scalar, -1 = variable size array */
+} attribute_spec_t;
+
+/*
+ * name [required] Unique name of this destination (UTF-8)
+ * x    [optional] x coordinate of destination on page. Default is x coord of
+ *                 extents of operations enclosed by the dest begin/end tags.
+ * y    [optional] y coordinate of destination on page. Default is y coord of
+ *                 extents of operations enclosed by the dest begin/end tags.
+ * internal [optional] If true, the name may be optimized out of the PDF where
+ *                     possible. Default false.
+ */
+static attribute_spec_t _dest_attrib_spec[] = {
+    { "name",     ATTRIBUTE_STRING },
+    { "x",        ATTRIBUTE_FLOAT },
+    { "y",        ATTRIBUTE_FLOAT },
+    { "internal", ATTRIBUTE_BOOL },
+    { NULL }
+};
+
+/*
+ * rect [optional] One or more rectangles to define link region. Default
+ *                 is the extents of the operations enclosed by the link begin/end tags.
+ *                 Each rectangle is specified by four array elements: x, y, width, height.
+ *                 ie the array size must be a multiple of four.
+ *
+ * Internal Links
+ * --------------
+ * either:
+ *   dest - name of dest tag in the PDF file to link to (UTF8)
+ * or
+ *   page - Page number in the PDF file to link to
+ *   pos  - [optional] Position of destination on page. Default is 0,0.
+ *
+ * URI Links
+ * ---------
+ * uri [required] Uniform resource identifier (ASCII).
+
+ * File Links
+ * ----------
+ * file - [required] File name of PDF file to link to.
+ *   either:
+ *     dest - name of dest tag in the PDF file to link to (UTF8)
+ *   or
+ *     page - Page number in the PDF file to link to
+ *     pos  - [optional] Position of destination on page. Default is 0,0.
+ */
+static attribute_spec_t _link_attrib_spec[] =
+{
+    { "rect", ATTRIBUTE_FLOAT, -1 },
+    { "dest", ATTRIBUTE_STRING },
+    { "uri",  ATTRIBUTE_STRING },
+    { "file", ATTRIBUTE_STRING },
+    { "page", ATTRIBUTE_INT },
+    { "pos",  ATTRIBUTE_FLOAT, 2 },
+    { NULL }
+};
+
+/*
+ * Required:
+ *   Columns - width of the image in pixels.
+ *   Rows    - height of the image in scan lines.
+ *
+ * Optional:
+ *   K - An integer identifying the encoding scheme used. < 0 is 2 dimensional
+ *       Group 4, = 0 is Group3 1 dimensional, > 0 is mixed 1 and 2 dimensional
+ *       encoding. Default: 0.
+ *   EndOfLine  - If true end-of-line bit patterns are present. Default: false.
+ *   EncodedByteAlign - If true the end of line is padded with 0 bits so the next
+ *                      line begins on a byte boundary. Default: false.
+ *   EndOfBlock - If true the data contains an end-of-block pattern. Default: true.
+ *   BlackIs1   - If true 1 bits are black pixels. Default: false.
+ *   DamagedRowsBeforeError - Number of damages rows tolerated before an error
+ *                            occurs. Default: 0.
+ */
+static attribute_spec_t _ccitt_params_spec[] =
+{
+    { "Columns",                ATTRIBUTE_INT },
+    { "Rows",                   ATTRIBUTE_INT },
+    { "K",                      ATTRIBUTE_INT },
+    { "EndOfLine",              ATTRIBUTE_BOOL },
+    { "EncodedByteAlign",       ATTRIBUTE_BOOL },
+    { "EndOfBlock",             ATTRIBUTE_BOOL },
+    { "BlackIs1",               ATTRIBUTE_BOOL },
+    { "DamagedRowsBeforeError", ATTRIBUTE_INT },
+    { NULL }
+};
+
+/*
+ * bbox - Bounding box of EPS file. The format is [ llx lly urx ury ]
+ *          llx - lower left x xoordinate
+ *          lly - lower left y xoordinate
+ *          urx - upper right x xoordinate
+ *          ury - upper right y xoordinate
+ *        all cordinates are in PostScript coordinates.
+ */
+static attribute_spec_t _eps_params_spec[] =
+{
+    { "bbox", ATTRIBUTE_FLOAT, 4 },
+    { NULL }
+};
+
+typedef union {
+    cairo_bool_t b;
+    int i;
+    double f;
+    char *s;
+} attrib_val_t;
+
+typedef struct _attribute {
+    char *name;
+    attribute_type_t type;
+    int array_len; /* 0 = scalar */
+    attrib_val_t scalar;
+    cairo_array_t array; /* array of attrib_val_t */
+    cairo_list_t link;
+} attribute_t;
+
+static const char *
+skip_space (const char *p)
+{
+    while (_cairo_isspace (*p))
+	p++;
+
+    return p;
+}
+
+static const char *
+parse_bool (const char *p, cairo_bool_t *b)
+{
+    if (*p == '1') {
+	*b = TRUE;
+	return p + 1;
+    } else if (*p == '0') {
+	*b = FALSE;
+	return p + 1;
+    } else if (strcmp (p, "true") == 0) {
+	*b = TRUE;
+	return p + 4;
+    } else if (strcmp (p, "false") == 0) {
+	*b = FALSE;
+	return p + 5;
+    }
+
+    return NULL;
+}
+
+static const char *
+parse_int (const char *p, int *i)
+{
+    int n;
+
+    if (sscanf(p, "%d%n", i, &n) > 0)
+	return p + n;
+
+    return NULL;
+}
+
+static const char *
+parse_float (const char *p, double *d)
+{
+    int n;
+
+    if (sscanf(p, "%lf%n", d, &n) > 0)
+	return p + n;
+
+    return NULL;
+}
+
+static const char *
+decode_string (const char *p, int *len, char *s)
+{
+    if (*p != '\'')
+	return NULL;
+
+    p++;
+    if (! *p)
+	return NULL;
+
+    *len = 0;
+    while (*p) {
+	if (*p == '\\') {
+	    p++;
+	    if (*p) {
+		if (s)
+		    *s++ = *p;
+		p++;
+		(*len)++;
+	    }
+	} else if (*p == '\'') {
+	    return p + 1;
+	} else {
+	    if (s)
+		*s++ = *p;
+	    p++;
+	    (*len)++;
+	}
+    }
+
+    return NULL;
+}
+
+static const char *
+parse_string (const char *p, char **s)
+{
+    const char *end;
+    int len;
+
+    end = decode_string (p, &len, NULL);
+    if (!end)
+	return NULL;
+
+    *s = _cairo_malloc (len + 1);
+    decode_string (p, &len, *s);
+    (*s)[len] = 0;
+
+    return end;
+}
+
+static const char *
+parse_scalar (const char *p, attribute_type_t type, attrib_val_t *scalar)
+{
+    switch (type) {
+	case ATTRIBUTE_BOOL:
+	    return parse_bool (p, &scalar->b);
+	case ATTRIBUTE_INT:
+	    return parse_int (p, &scalar->i);
+	case ATTRIBUTE_FLOAT:
+	    return parse_float (p, &scalar->f);
+	case ATTRIBUTE_STRING:
+	    return parse_string (p, &scalar->s);
+    }
+
+    return NULL;
+}
+
+static cairo_int_status_t
+parse_array (const char *p, attribute_type_t type, cairo_array_t *array, const char **end)
+{
+    attrib_val_t val;
+    cairo_int_status_t status;
+
+    p = skip_space (p);
+    if (! *p)
+	return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+    if (*p++ != '[')
+	return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+    while (TRUE) {
+	p = skip_space (p);
+	if (! *p)
+	    return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+	if (*p == ']') {
+	    *end = p + 1;
+	    return CAIRO_INT_STATUS_SUCCESS;
+	}
+
+	p = parse_scalar (p, type, &val);
+	if (!p)
+	    return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+	status = _cairo_array_append (array, &val);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+}
+
+static cairo_int_status_t
+parse_name (const char *p, const char **end, char **s)
+{
+    const char *p2;
+    char *name;
+    int len;
+
+    if (! _cairo_isalpha (*p))
+	return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+    p2 = p;
+    while (_cairo_isalpha (*p2) || _cairo_isdigit (*p2))
+	p2++;
+
+    len = p2 - p;
+    name = _cairo_malloc (len + 1);
+    if (unlikely (name == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    memcpy (name, p, len);
+    name[len] = 0;
+    *s = name;
+    *end = p2;
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+parse_attributes (const char *attributes, attribute_spec_t *attrib_def, cairo_list_t *list)
+{
+    attribute_spec_t *def;
+    attribute_t *attrib;
+    char *name = NULL;
+    cairo_int_status_t status;
+    const char *p = attributes;
+
+    if (! p)
+	return _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+    while (*p) {
+	p = skip_space (p);
+	if (! *p)
+	    break;
+
+	status = parse_name (p, &p, &name);
+	if (status)
+	    return status;
+
+	def = attrib_def;
+	while (def->name) {
+	    if (strcmp (name, def->name) == 0)
+		break;
+	    def++;
+	}
+	if (! def->name) {
+	    status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+	    goto fail1;
+	}
+
+	attrib = calloc (1, sizeof (attribute_t));
+	if (unlikely (attrib == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail1;
+	}
+
+	attrib->name = name;
+	attrib->type = def->type;
+	_cairo_array_init (&attrib->array, sizeof(attrib_val_t));
+
+	p = skip_space (p);
+	if (def->type == ATTRIBUTE_BOOL && *p != '=') {
+	    attrib->scalar.b = TRUE;
+	} else {
+	    if (*p++ != '=') {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto fail2;
+	    }
+
+	    if (def->array_size == 0) {
+		p = parse_scalar (p, def->type, &attrib->scalar);
+		if (!p) {
+		    status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		    goto fail2;
+		}
+
+		attrib->array_len = 0;
+	    } else {
+		status = parse_array (p, def->type, &attrib->array, &p);
+		if (unlikely (status))
+		    goto fail2;
+
+		attrib->array_len = _cairo_array_num_elements (&attrib->array);
+		if (def->array_size > 0 && attrib->array_len != def->array_size) {
+		    status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		    goto fail2;
+		}
+	    }
+	}
+
+	cairo_list_add_tail (&attrib->link, list);
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+
+  fail2:
+    _cairo_array_fini (&attrib->array);
+    if (attrib->type == ATTRIBUTE_STRING)
+	free (attrib->scalar.s);
+    free (attrib);
+  fail1:
+    free (name);
+
+    return status;
+}
+
+static void
+free_attributes_list (cairo_list_t *list)
+{
+    attribute_t *attr, *next;
+
+    cairo_list_foreach_entry_safe (attr, next, attribute_t, list, link)
+    {
+	cairo_list_del (&attr->link);
+	free (attr->name);
+	_cairo_array_fini (&attr->array);
+	if (attr->type == ATTRIBUTE_STRING)
+	    free (attr->scalar.s);
+	free (attr);
+    }
+}
+
+static attribute_t *
+find_attribute (cairo_list_t *list, const char *name)
+{
+    attribute_t *attr;
+
+    cairo_list_foreach_entry (attr, attribute_t, list, link)
+    {
+	if (strcmp (attr->name, name) == 0)
+	    return attr;
+    }
+
+    return NULL;
+}
+
+cairo_int_status_t
+_cairo_tag_parse_link_attributes (const char *attributes, cairo_link_attrs_t *link_attrs)
+{
+    cairo_list_t list;
+    cairo_int_status_t status;
+    attribute_t *attr;
+    attrib_val_t val;
+
+    cairo_list_init (&list);
+    status = parse_attributes (attributes, _link_attrib_spec, &list);
+    if (unlikely (status))
+	return status;
+
+    memset (link_attrs, 0, sizeof (cairo_link_attrs_t));
+    _cairo_array_init (&link_attrs->rects, sizeof (cairo_rectangle_t));
+    if (find_attribute (&list, "uri")) {
+	link_attrs->link_type = TAG_LINK_URI;
+    } else if (find_attribute (&list, "file")) {
+	link_attrs->link_type = TAG_LINK_FILE;
+    } else if (find_attribute (&list, "dest")) {
+	link_attrs->link_type = TAG_LINK_DEST;
+    } else if (find_attribute (&list, "page")) {
+	link_attrs->link_type = TAG_LINK_DEST;
+    } else {
+	link_attrs->link_type = TAG_LINK_EMPTY;
+	goto cleanup;
+    }
+
+    cairo_list_foreach_entry (attr, attribute_t, &list, link)
+    {
+	if (strcmp (attr->name, "uri") == 0) {
+	    if (link_attrs->link_type != TAG_LINK_URI) {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto cleanup;
+	    }
+
+	    link_attrs->uri = strdup (attr->scalar.s);
+	} else if (strcmp (attr->name, "file") == 0) {
+	    if (link_attrs->link_type != TAG_LINK_FILE) {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto cleanup;
+	    }
+
+	    link_attrs->file = strdup (attr->scalar.s);
+	} else if (strcmp (attr->name, "dest") == 0) {
+	    if (! (link_attrs->link_type == TAG_LINK_DEST ||
+		   link_attrs->link_type != TAG_LINK_FILE)) {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto cleanup;
+	    }
+
+	    link_attrs->dest = strdup (attr->scalar.s);
+	} else if (strcmp (attr->name, "page") == 0) {
+	    if (! (link_attrs->link_type == TAG_LINK_DEST ||
+		   link_attrs->link_type != TAG_LINK_FILE)) {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto cleanup;
+	    }
+
+	    link_attrs->page = attr->scalar.i;
+
+	} else if (strcmp (attr->name, "pos") == 0) {
+	    if (! (link_attrs->link_type == TAG_LINK_DEST ||
+		   link_attrs->link_type != TAG_LINK_FILE)) {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto cleanup;
+	    }
+
+	    _cairo_array_copy_element (&attr->array, 0, &val);
+	    link_attrs->pos.x = val.f;
+	    _cairo_array_copy_element (&attr->array, 1, &val);
+	    link_attrs->pos.y = val.f;
+	    link_attrs->has_pos = TRUE;
+	} else if (strcmp (attr->name, "rect") == 0) {
+	    cairo_rectangle_t rect;
+	    int i;
+	    int num_elem = _cairo_array_num_elements (&attr->array);
+	    if (num_elem == 0 || num_elem % 4 != 0) {
+		status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+		goto cleanup;
+	    }
+
+	    for (i = 0; i < num_elem; i += 4) {
+		_cairo_array_copy_element (&attr->array, i, &val);
+		rect.x = val.f;
+		_cairo_array_copy_element (&attr->array, i+1, &val);
+		rect.y = val.f;
+		_cairo_array_copy_element (&attr->array, i+2, &val);
+		rect.width = val.f;
+		_cairo_array_copy_element (&attr->array, i+3, &val);
+		rect.height = val.f;
+		status = _cairo_array_append (&link_attrs->rects, &rect);
+		if (unlikely (status))
+		    goto cleanup;
+	    }
+	}
+    }
+
+  cleanup:
+    free_attributes_list (&list);
+    if (unlikely (status)) {
+	free (link_attrs->dest);
+	free (link_attrs->uri);
+	free (link_attrs->file);
+	_cairo_array_fini (&link_attrs->rects);
+    }
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_tag_parse_dest_attributes (const char *attributes, cairo_dest_attrs_t *dest_attrs)
+{
+    cairo_list_t list;
+    cairo_int_status_t status;
+    attribute_t *attr;
+
+    memset (dest_attrs, 0, sizeof (cairo_dest_attrs_t));
+    cairo_list_init (&list);
+    status = parse_attributes (attributes, _dest_attrib_spec, &list);
+    if (unlikely (status))
+	goto cleanup;
+
+    cairo_list_foreach_entry (attr, attribute_t, &list, link)
+    {
+	if (strcmp (attr->name, "name") == 0) {
+	    dest_attrs->name = strdup (attr->scalar.s);
+	} else if (strcmp (attr->name, "x") == 0) {
+	    dest_attrs->x = attr->scalar.f;
+	    dest_attrs->x_valid = TRUE;
+	} else if (strcmp (attr->name, "y") == 0) {
+	    dest_attrs->y = attr->scalar.f;
+	    dest_attrs->y_valid = TRUE;
+	} else if (strcmp (attr->name, "internal") == 0) {
+	    dest_attrs->internal = attr->scalar.b;
+	}
+    }
+
+    if (! dest_attrs->name)
+	status = _cairo_error (CAIRO_INT_STATUS_TAG_ERROR);
+
+  cleanup:
+    free_attributes_list (&list);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_tag_parse_ccitt_params (const char *attributes, cairo_ccitt_params_t *ccitt_params)
+{
+    cairo_list_t list;
+    cairo_int_status_t status;
+    attribute_t *attr;
+
+    ccitt_params->columns = -1;
+    ccitt_params->rows = -1;
+
+    /* set defaults */
+    ccitt_params->k = 0;
+    ccitt_params->end_of_line = FALSE;
+    ccitt_params->encoded_byte_align = FALSE;
+    ccitt_params->end_of_block = TRUE;
+    ccitt_params->black_is_1 = FALSE;
+    ccitt_params->damaged_rows_before_error = 0;
+
+    cairo_list_init (&list);
+    status = parse_attributes (attributes, _ccitt_params_spec, &list);
+    if (unlikely (status))
+	goto cleanup;
+
+    cairo_list_foreach_entry (attr, attribute_t, &list, link)
+    {
+	if (strcmp (attr->name, "Columns") == 0) {
+	    ccitt_params->columns = attr->scalar.i;
+	} else if (strcmp (attr->name, "Rows") == 0) {
+	    ccitt_params->rows = attr->scalar.i;
+	} else if (strcmp (attr->name, "K") == 0) {
+	    ccitt_params->k = attr->scalar.i;
+	} else if (strcmp (attr->name, "EndOfLine") == 0) {
+	    ccitt_params->end_of_line = attr->scalar.b;
+	} else if (strcmp (attr->name, "EncodedByteAlign") == 0) {
+	    ccitt_params->encoded_byte_align = attr->scalar.b;
+	} else if (strcmp (attr->name, "EndOfBlock") == 0) {
+	    ccitt_params->end_of_block = attr->scalar.b;
+	} else if (strcmp (attr->name, "BlackIs1") == 0) {
+	    ccitt_params->black_is_1 = attr->scalar.b;
+	} else if (strcmp (attr->name, "DamagedRowsBeforeError") == 0) {
+	    ccitt_params->damaged_rows_before_error = attr->scalar.b;
+	}
+    }
+
+  cleanup:
+    free_attributes_list (&list);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_tag_parse_eps_params (const char *attributes, cairo_eps_params_t *eps_params)
+{
+    cairo_list_t list;
+    cairo_int_status_t status;
+    attribute_t *attr;
+    attrib_val_t val;
+
+    cairo_list_init (&list);
+    status = parse_attributes (attributes, _eps_params_spec, &list);
+    if (unlikely (status))
+	goto cleanup;
+
+    cairo_list_foreach_entry (attr, attribute_t, &list, link)
+    {
+	if (strcmp (attr->name, "bbox") == 0) {
+	    _cairo_array_copy_element (&attr->array, 0, &val);
+	    eps_params->bbox.p1.x = val.f;
+	    _cairo_array_copy_element (&attr->array, 1, &val);
+	    eps_params->bbox.p1.y = val.f;
+	    _cairo_array_copy_element (&attr->array, 2, &val);
+	    eps_params->bbox.p2.x = val.f;
+	    _cairo_array_copy_element (&attr->array, 3, &val);
+	    eps_params->bbox.p2.y = val.f;
+	}
+    }
+
+  cleanup:
+    free_attributes_list (&list);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-tag-stack-private.h b/libs/cairo-1.16.0/src/cairo-tag-stack-private.h
new file mode 100644
index 0000000..4af2a85
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tag-stack-private.h
@@ -0,0 +1,107 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2016 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_TAG_STACK_PRIVATE_H
+#define CAIRO_TAG_STACK_PRIVATE_H
+
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+
+/* The type of a single tag */
+typedef enum {
+    TAG_TYPE_INVALID = 0,
+    TAG_TYPE_STRUCTURE = 1,
+    TAG_TYPE_LINK = 2,
+    TAG_TYPE_DEST = 4,
+} cairo_tag_type_t;
+
+/* The type of the structure tree. */
+typedef enum _cairo_tag_stack_structure_type {
+    TAG_TREE_TYPE_TAGGED, /* compliant with Tagged PDF */
+    TAG_TREE_TYPE_STRUCTURE, /* valid structure but not 'Tagged PDF' compliant */
+    TAG_TREE_TYPE_LINK_ONLY, /* contains Link tags only */
+    TAG_TREE_TYPE_NO_TAGS, /* no tags used */
+    TAG_TREE_TYPE_INVALID, /* invalid tag structure */
+} cairo_tag_stack_structure_type_t;
+
+typedef struct _cairo_tag_stack_elem {
+    char *name;
+    char *attributes;
+    void *data;
+    cairo_list_t link;
+
+} cairo_tag_stack_elem_t;
+
+typedef struct _cairo_tag_stack {
+    cairo_list_t list;
+    cairo_tag_stack_structure_type_t type;
+    int size;
+
+} cairo_tag_stack_t;
+
+cairo_private void
+_cairo_tag_stack_init (cairo_tag_stack_t *stack);
+
+cairo_private void
+_cairo_tag_stack_fini (cairo_tag_stack_t *stack);
+
+cairo_private cairo_tag_stack_structure_type_t
+_cairo_tag_stack_get_structure_type (cairo_tag_stack_t *stack);
+
+cairo_private cairo_int_status_t
+_cairo_tag_stack_push (cairo_tag_stack_t *stack,
+		       const char        *name,
+		       const char        *attributes);
+
+cairo_private void
+_cairo_tag_stack_set_top_data (cairo_tag_stack_t *stack,
+			       void              *data);
+
+cairo_private cairo_int_status_t
+_cairo_tag_stack_pop (cairo_tag_stack_t *stack,
+		      const char *name,
+		      cairo_tag_stack_elem_t **elem);
+
+cairo_private cairo_tag_stack_elem_t *
+_cairo_tag_stack_top_elem (cairo_tag_stack_t *stack);
+
+cairo_private void
+_cairo_tag_stack_free_elem (cairo_tag_stack_elem_t *elem);
+
+cairo_private cairo_tag_type_t
+_cairo_tag_get_type (const char *name);
+
+#endif /* CAIRO_TAG_STACK_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-tag-stack.c b/libs/cairo-1.16.0/src/cairo-tag-stack.c
new file mode 100644
index 0000000..7c2d524
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tag-stack.c
@@ -0,0 +1,280 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2016 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-tag-stack-private.h"
+
+/* Tagged PDF must have one of these tags at the top level */
+static const char * _cairo_tag_stack_tagged_pdf_top_level_element_list[] =
+{
+    "Document",
+    "Part",
+    "Art",
+    "Sect",
+    "Div",
+    NULL
+};
+
+/* List of valid tag names. Table numbers reference PDF 32000 */
+static const char * _cairo_tag_stack_struct_pdf_list[] =
+{
+    /* Table 333 - Grouping Elements */
+    "Document",
+    "Part",
+    "Art",
+    "Sect",
+    "Div",
+    "BlockQuote",
+    "Caption",
+    "TOC",
+    "TOCI",
+    "Index",
+    "NonStruct",
+    "Private",
+
+    /* Table 335 - Standard structure types for paragraphlike elements */
+    "P", "H",
+    "H1", "H2", "H3", "H4", "H5", "H6",
+
+    /* Table 336 - Standard structure types for list elements */
+    "L", "LI", "Lbl", "LBody",
+
+    /* Table 337 - Standard structure types for table elements */
+    "Table",
+    "TR", "TH", "TD",
+    "THead", "TBody", "TFoot",
+
+    /* Table 338 - Standard structure types for inline-level structure elements */
+    "Span",
+    "Quote",
+    "Note",
+    "Reference",
+    "BibEntry",
+    "Code",
+    "Link", /* CAIRO_TAG_LINK */
+    "Annot",
+    "Ruby",
+    "Warichu",
+
+    /* Table 339 - Standard structure types for Ruby and Warichu elements */
+    "RB", "RT", "RP",
+    "WT", "WP",
+
+    /* Table 340 - Standard structure types for illustration elements */
+    "Figure",
+    "Formula",
+    "Form",
+
+    NULL
+};
+
+/* List of cairo specific tag names */
+static const char * _cairo_tag_stack_cairo_tag_list[] =
+{
+    CAIRO_TAG_DEST,
+    NULL
+};
+
+void
+_cairo_tag_stack_init (cairo_tag_stack_t *stack)
+{
+    cairo_list_init (&stack->list);
+    stack->type = TAG_TREE_TYPE_NO_TAGS;
+    stack->size = 0;
+}
+
+void
+_cairo_tag_stack_fini (cairo_tag_stack_t *stack)
+{
+    while (! cairo_list_is_empty (&stack->list)) {
+	cairo_tag_stack_elem_t *elem;
+
+	elem = cairo_list_first_entry (&stack->list, cairo_tag_stack_elem_t, link);
+	cairo_list_del (&elem->link);
+	free (elem->name);
+	free (elem->attributes);
+	free (elem);
+    }
+}
+
+cairo_tag_stack_structure_type_t
+_cairo_tag_stack_get_structure_type (cairo_tag_stack_t *stack)
+{
+    return stack->type;
+}
+
+static cairo_bool_t
+name_in_list (const char *name, const char **list)
+{
+    if (! name)
+	return FALSE;
+
+    while (*list) {
+	if (strcmp (name, *list) == 0)
+	    return TRUE;
+	list++;
+    }
+
+    return FALSE;
+}
+
+cairo_int_status_t
+_cairo_tag_stack_push (cairo_tag_stack_t *stack,
+		       const char        *name,
+		       const char        *attributes)
+{
+    cairo_tag_stack_elem_t *elem;
+
+    if (! name_in_list (name, _cairo_tag_stack_struct_pdf_list) &&
+	! name_in_list (name, _cairo_tag_stack_cairo_tag_list))
+    {
+	stack->type = TAG_TYPE_INVALID;
+	return _cairo_error (CAIRO_STATUS_TAG_ERROR);
+    }
+
+    if (stack->type == TAG_TREE_TYPE_NO_TAGS) {
+	if (name_in_list (name, _cairo_tag_stack_tagged_pdf_top_level_element_list))
+	    stack->type = TAG_TREE_TYPE_TAGGED;
+	else if (strcmp (name, "Link") == 0)
+	    stack->type = TAG_TREE_TYPE_LINK_ONLY;
+	else if (name_in_list (name, _cairo_tag_stack_struct_pdf_list))
+	    stack->type = TAG_TREE_TYPE_STRUCTURE;
+    } else {
+	if (stack->type == TAG_TREE_TYPE_LINK_ONLY &&
+	    (strcmp (name, "Link") != 0) &&
+	    name_in_list (name, _cairo_tag_stack_struct_pdf_list))
+	{
+	    stack->type = TAG_TREE_TYPE_STRUCTURE;
+	}
+    }
+
+    elem = _cairo_malloc (sizeof(cairo_tag_stack_elem_t));
+    if (unlikely (elem == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    elem->name = strdup (name);
+    if (unlikely (elem->name == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (attributes) {
+	elem->attributes = strdup (attributes);
+	if (unlikely (elem->attributes == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else {
+	elem->attributes = NULL;
+    }
+
+    elem->data = NULL;
+
+    cairo_list_add_tail (&elem->link, &stack->list);
+    stack->size++;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_private void
+_cairo_tag_stack_set_top_data (cairo_tag_stack_t *stack,
+			       void        *data)
+{
+    cairo_tag_stack_elem_t *top;
+
+    top = _cairo_tag_stack_top_elem (stack);
+    if (top)
+	top->data = data;
+}
+
+cairo_int_status_t
+_cairo_tag_stack_pop (cairo_tag_stack_t *stack,
+		      const char *name,
+		      cairo_tag_stack_elem_t **elem)
+{
+    cairo_tag_stack_elem_t *top;
+
+    top = _cairo_tag_stack_top_elem (stack);
+    if (!top) {
+	stack->type = TAG_TYPE_INVALID;
+	return _cairo_error (CAIRO_STATUS_TAG_ERROR);
+    }
+
+    cairo_list_del (&top->link);
+    stack->size--;
+    if (strcmp (top->name, name) != 0) {
+	stack->type = TAG_TYPE_INVALID;
+	_cairo_tag_stack_free_elem (top);
+	return _cairo_error (CAIRO_STATUS_TAG_ERROR);
+    }
+
+    if (elem)
+	*elem = top;
+    else
+	_cairo_tag_stack_free_elem (top);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_tag_stack_elem_t *
+_cairo_tag_stack_top_elem (cairo_tag_stack_t *stack)
+{
+    if (cairo_list_is_empty (&stack->list))
+	return NULL;
+
+    return cairo_list_last_entry (&stack->list, cairo_tag_stack_elem_t, link);
+}
+
+void
+_cairo_tag_stack_free_elem (cairo_tag_stack_elem_t *elem)
+{
+    free (elem->name);
+    free (elem->attributes);
+    free (elem);
+}
+
+cairo_tag_type_t
+_cairo_tag_get_type (const char *name)
+{
+    if (! name_in_list (name, _cairo_tag_stack_struct_pdf_list) &&
+	! name_in_list (name, _cairo_tag_stack_cairo_tag_list))
+	return TAG_TYPE_INVALID;
+
+    if (strcmp(name, "Link") == 0)
+	return (TAG_TYPE_LINK | TAG_TYPE_STRUCTURE);
+
+    if (strcmp(name, "cairo.dest") == 0)
+	return TAG_TYPE_DEST;
+
+    return TAG_TYPE_STRUCTURE;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-tee-surface-private.h b/libs/cairo-1.16.0/src/cairo-tee-surface-private.h
new file mode 100644
index 0000000..a83cfc9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tee-surface-private.h
@@ -0,0 +1,47 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_TEE_SURFACE_PRIVATE_H
+#define CAIRO_TEE_SURFACE_PRIVATE_H
+
+#include "cairoint.h"
+
+cairo_private cairo_surface_t *
+_cairo_tee_surface_find_match (void *abstract_surface,
+			       const cairo_surface_backend_t *backend,
+			       cairo_content_t content);
+
+#endif /* CAIRO_TEE_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-tee-surface.c b/libs/cairo-1.16.0/src/cairo-tee-surface.c
new file mode 100644
index 0000000..7a94c9b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tee-surface.c
@@ -0,0 +1,603 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* This surface supports redirecting all its input to multiple surfaces.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-tee.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-tee-surface-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-surface-wrapper-private.h"
+#include "cairo-array-private.h"
+#include "cairo-image-surface-inline.h"
+
+typedef struct _cairo_tee_surface {
+    cairo_surface_t base;
+
+    cairo_surface_wrapper_t master;
+    cairo_array_t slaves;
+} cairo_tee_surface_t;
+
+slim_hidden_proto (cairo_tee_surface_create);
+slim_hidden_proto (cairo_tee_surface_add);
+
+static cairo_surface_t *
+_cairo_tee_surface_create_similar (void			*abstract_surface,
+				   cairo_content_t	 content,
+				   int			 width,
+				   int			 height)
+{
+
+    cairo_tee_surface_t *other = abstract_surface;
+    cairo_surface_t *similar;
+    cairo_surface_t *surface;
+    cairo_surface_wrapper_t *slaves;
+    int n, num_slaves;
+
+    similar = _cairo_surface_wrapper_create_similar (&other->master,
+						     content, width, height);
+    surface = cairo_tee_surface_create (similar);
+    cairo_surface_destroy (similar);
+    if (unlikely (surface->status))
+	return surface;
+
+    num_slaves = _cairo_array_num_elements (&other->slaves);
+    slaves = _cairo_array_index (&other->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+
+	similar = _cairo_surface_wrapper_create_similar (&slaves[n],
+							 content,
+							 width, height);
+	cairo_tee_surface_add (surface, similar);
+	cairo_surface_destroy (similar);
+    }
+
+    if (unlikely (surface->status)) {
+	cairo_status_t status = surface->status;
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+    }
+
+    return surface;
+}
+
+static cairo_status_t
+_cairo_tee_surface_finish (void *abstract_surface)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    int n, num_slaves;
+
+    _cairo_surface_wrapper_fini (&surface->master);
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++)
+	_cairo_surface_wrapper_fini (&slaves[n]);
+
+    _cairo_array_fini (&surface->slaves);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_tee_surface_source (void	     *abstract_surface,
+			   cairo_rectangle_int_t *extents)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    return _cairo_surface_get_source (surface->master.target, extents);
+}
+
+static cairo_status_t
+_cairo_tee_surface_acquire_source_image (void	     *abstract_surface,
+					 cairo_image_surface_t **image_out,
+					 void		 **image_extra)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    int num_slaves, n;
+
+    /* we prefer to use a real image surface if available */
+    if (_cairo_surface_is_image (surface->master.target)) {
+	return _cairo_surface_wrapper_acquire_source_image (&surface->master,
+							    image_out, image_extra);
+    }
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	if (_cairo_surface_is_image (slaves[n].target)) {
+	    return _cairo_surface_wrapper_acquire_source_image (&slaves[n],
+								image_out,
+								image_extra);
+	}
+    }
+
+    return _cairo_surface_wrapper_acquire_source_image (&surface->master,
+							image_out, image_extra);
+}
+
+static void
+_cairo_tee_surface_release_source_image (void	     *abstract_surface,
+					 cairo_image_surface_t	*image,
+					 void		  *image_extra)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+
+    _cairo_surface_wrapper_release_source_image (&surface->master,
+						 image, image_extra);
+}
+
+static cairo_surface_t *
+_cairo_tee_surface_snapshot (void *abstract_surface)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    int num_slaves, n;
+
+    /* we prefer to use a recording surface for our snapshots */
+    if (_cairo_surface_is_recording (surface->master.target))
+	return _cairo_surface_wrapper_snapshot (&surface->master);
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	if (_cairo_surface_is_recording (slaves[n].target))
+	    return _cairo_surface_wrapper_snapshot (&slaves[n]);
+    }
+
+    return _cairo_surface_wrapper_snapshot (&surface->master);
+}
+
+static cairo_bool_t
+_cairo_tee_surface_get_extents (void			*abstract_surface,
+				cairo_rectangle_int_t	*rectangle)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_wrapper_get_extents (&surface->master, rectangle);
+}
+
+static void
+_cairo_tee_surface_get_font_options (void                  *abstract_surface,
+				     cairo_font_options_t  *options)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+
+    _cairo_surface_wrapper_get_font_options (&surface->master, options);
+}
+
+static cairo_int_status_t
+_cairo_tee_surface_paint (void			*abstract_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  const cairo_clip_t	*clip)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    int n, num_slaves;
+    cairo_int_status_t status;
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	status = _cairo_surface_wrapper_paint (&slaves[n], op, source, clip);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_surface_wrapper_paint (&surface->master, op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_tee_surface_mask (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_pattern_t	*mask,
+			 const cairo_clip_t	*clip)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    cairo_int_status_t status;
+    int n, num_slaves;
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	status = _cairo_surface_wrapper_mask (&slaves[n],
+					      op, source, mask, clip);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_surface_wrapper_mask (&surface->master,
+					op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_tee_surface_stroke (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_path_fixed_t	*path,
+			   const cairo_stroke_style_t	*style,
+			   const cairo_matrix_t		*ctm,
+			   const cairo_matrix_t		*ctm_inverse,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   const cairo_clip_t		*clip)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    cairo_int_status_t status;
+    int n, num_slaves;
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	status = _cairo_surface_wrapper_stroke (&slaves[n],
+						op, source,
+						path, style,
+						ctm, ctm_inverse,
+						tolerance, antialias,
+						clip);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_surface_wrapper_stroke (&surface->master,
+					  op, source,
+					  path, style,
+					  ctm, ctm_inverse,
+					  tolerance, antialias,
+					  clip);
+}
+
+static cairo_int_status_t
+_cairo_tee_surface_fill (void				*abstract_surface,
+			 cairo_operator_t		 op,
+			 const cairo_pattern_t		*source,
+			 const cairo_path_fixed_t	*path,
+			 cairo_fill_rule_t		 fill_rule,
+			 double				 tolerance,
+			 cairo_antialias_t		 antialias,
+			 const cairo_clip_t		*clip)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    cairo_int_status_t status;
+    int n, num_slaves;
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	status = _cairo_surface_wrapper_fill (&slaves[n],
+					      op, source,
+					      path, fill_rule,
+					      tolerance, antialias,
+					      clip);
+	if (unlikely (status))
+	    return status;
+    }
+
+    return _cairo_surface_wrapper_fill (&surface->master,
+					op, source,
+					path, fill_rule,
+					tolerance, antialias,
+					clip);
+}
+
+static cairo_bool_t
+_cairo_tee_surface_has_show_text_glyphs (void *abstract_surface)
+{
+    return TRUE;
+}
+
+static cairo_int_status_t
+_cairo_tee_surface_show_text_glyphs (void		    *abstract_surface,
+				     cairo_operator_t	     op,
+				     const cairo_pattern_t  *source,
+				     const char		    *utf8,
+				     int		     utf8_len,
+				     cairo_glyph_t	    *glyphs,
+				     int		     num_glyphs,
+				     const cairo_text_cluster_t *clusters,
+				     int		     num_clusters,
+				     cairo_text_cluster_flags_t cluster_flags,
+				     cairo_scaled_font_t    *scaled_font,
+				     const cairo_clip_t	    *clip)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    cairo_int_status_t status;
+    int n, num_slaves;
+    cairo_glyph_t *glyphs_copy;
+
+    /* XXX: This copying is ugly. */
+    glyphs_copy = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+    if (unlikely (glyphs_copy == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
+	status = _cairo_surface_wrapper_show_text_glyphs (&slaves[n], op,
+							  source,
+							  utf8, utf8_len,
+							  glyphs_copy, num_glyphs,
+							  clusters, num_clusters,
+							  cluster_flags,
+							  scaled_font,
+							  clip);
+	if (unlikely (status))
+	    goto CLEANUP;
+    }
+
+    memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
+    status = _cairo_surface_wrapper_show_text_glyphs (&surface->master, op,
+						      source,
+						      utf8, utf8_len,
+						      glyphs_copy, num_glyphs,
+						      clusters, num_clusters,
+						      cluster_flags,
+						      scaled_font,
+						      clip);
+CLEANUP:
+    free (glyphs_copy);
+    return status;
+}
+
+static const cairo_surface_backend_t cairo_tee_surface_backend = {
+    CAIRO_SURFACE_TYPE_TEE,
+    _cairo_tee_surface_finish,
+
+    _cairo_default_context_create, /* XXX */
+
+    _cairo_tee_surface_create_similar,
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_tee_surface_source,
+    _cairo_tee_surface_acquire_source_image,
+    _cairo_tee_surface_release_source_image,
+    _cairo_tee_surface_snapshot,
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_tee_surface_get_extents,
+    _cairo_tee_surface_get_font_options,
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_tee_surface_paint,
+    _cairo_tee_surface_mask,
+    _cairo_tee_surface_stroke,
+    _cairo_tee_surface_fill,
+    NULL, /* fill_stroke */
+
+    NULL, /* show_glyphs */
+
+    _cairo_tee_surface_has_show_text_glyphs,
+    _cairo_tee_surface_show_text_glyphs
+};
+
+cairo_surface_t *
+cairo_tee_surface_create (cairo_surface_t *master)
+{
+    cairo_tee_surface_t *surface;
+
+    if (unlikely (master->status))
+	return _cairo_surface_create_in_error (master->status);
+
+    surface = _cairo_malloc (sizeof (cairo_tee_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_tee_surface_backend,
+			 master->device,
+			 master->content,
+			 TRUE); /* is_vector */
+
+    _cairo_surface_wrapper_init (&surface->master, master);
+
+    _cairo_array_init (&surface->slaves, sizeof (cairo_surface_wrapper_t));
+
+    return &surface->base;
+}
+slim_hidden_def (cairo_tee_surface_create);
+
+void
+cairo_tee_surface_add (cairo_surface_t *abstract_surface,
+		       cairo_surface_t *target)
+{
+    cairo_tee_surface_t *surface;
+    cairo_surface_wrapper_t slave;
+    cairo_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	status = _cairo_surface_set_error (abstract_surface,
+					   _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (abstract_surface->backend != &cairo_tee_surface_backend) {
+	status = _cairo_surface_set_error (abstract_surface,
+					   _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    if (unlikely (target->status)) {
+	status = _cairo_surface_set_error (abstract_surface, target->status);
+	return;
+    }
+
+    surface = (cairo_tee_surface_t *) abstract_surface;
+
+    _cairo_surface_wrapper_init (&slave, target);
+    status = _cairo_array_append (&surface->slaves, &slave);
+    if (unlikely (status)) {
+	_cairo_surface_wrapper_fini (&slave);
+	status = _cairo_surface_set_error (&surface->base, status);
+    }
+}
+slim_hidden_def (cairo_tee_surface_add);
+
+void
+cairo_tee_surface_remove (cairo_surface_t *abstract_surface,
+			  cairo_surface_t *target)
+{
+    cairo_tee_surface_t *surface;
+    cairo_surface_wrapper_t *slaves;
+    int n, num_slaves;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (abstract_surface->backend != &cairo_tee_surface_backend) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    surface = (cairo_tee_surface_t *) abstract_surface;
+    if (target == surface->master.target) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_INVALID_INDEX));
+	return;
+    }
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	if (slaves[n].target == target)
+	    break;
+    }
+
+    if (n == num_slaves) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_INVALID_INDEX));
+	return;
+    }
+
+    _cairo_surface_wrapper_fini (&slaves[n]);
+    for (n++; n < num_slaves; n++)
+	slaves[n-1] = slaves[n];
+    surface->slaves.num_elements--; /* XXX: cairo_array_remove()? */
+}
+
+cairo_surface_t *
+cairo_tee_surface_index (cairo_surface_t *abstract_surface,
+			 unsigned int index)
+{
+    cairo_tee_surface_t *surface;
+
+    if (unlikely (abstract_surface->status))
+	return _cairo_surface_create_in_error (abstract_surface->status);
+    if (unlikely (abstract_surface->finished))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (abstract_surface->backend != &cairo_tee_surface_backend)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+    surface = (cairo_tee_surface_t *) abstract_surface;
+    if (index == 0) {
+	return surface->master.target;
+    } else {
+	cairo_surface_wrapper_t *slave;
+
+	index--;
+
+	if (index >= _cairo_array_num_elements (&surface->slaves))
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_INDEX));
+
+	slave = _cairo_array_index (&surface->slaves, index);
+	return slave->target;
+    }
+}
+
+cairo_surface_t *
+_cairo_tee_surface_find_match (void *abstract_surface,
+			       const cairo_surface_backend_t *backend,
+			       cairo_content_t content)
+{
+    cairo_tee_surface_t *surface = abstract_surface;
+    cairo_surface_wrapper_t *slaves;
+    int num_slaves, n;
+
+    /* exact match first */
+    if (surface->master.target->backend == backend &&
+	surface->master.target->content == content)
+    {
+	return surface->master.target;
+    }
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	if (slaves[n].target->backend == backend &&
+	    slaves[n].target->content == content)
+	{
+	    return slaves[n].target;
+	}
+    }
+
+    /* matching backend? */
+    if (surface->master.target->backend == backend)
+	return surface->master.target;
+
+    num_slaves = _cairo_array_num_elements (&surface->slaves);
+    slaves = _cairo_array_index (&surface->slaves, 0);
+    for (n = 0; n < num_slaves; n++) {
+	if (slaves[n].target->backend == backend)
+	    return slaves[n].target;
+    }
+
+    return NULL;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-tee.h b/libs/cairo-1.16.0/src/cairo-tee.h
new file mode 100644
index 0000000..9125a3a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tee.h
@@ -0,0 +1,66 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_TEE_H
+#define CAIRO_TEE_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_TEE_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_tee_surface_create (cairo_surface_t *master);
+
+cairo_public void
+cairo_tee_surface_add (cairo_surface_t *surface,
+		       cairo_surface_t *target);
+
+cairo_public void
+cairo_tee_surface_remove (cairo_surface_t *surface,
+			  cairo_surface_t *target);
+
+cairo_public cairo_surface_t *
+cairo_tee_surface_index (cairo_surface_t *surface,
+			 unsigned int index);
+
+CAIRO_END_DECLS
+
+#else  /*CAIRO_HAS_TEE_SURFACE*/
+# error Cairo was not compiled with support for the TEE backend
+#endif /*CAIRO_HAS_TEE_SURFACE*/
+
+#endif /*CAIRO_TEE_H*/
diff --git a/libs/cairo-1.16.0/src/cairo-time-private.h b/libs/cairo-1.16.0/src/cairo-time-private.h
new file mode 100644
index 0000000..06dc912
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-time-private.h
@@ -0,0 +1,94 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (C) 2011 Andrea Canciani
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of the
+ * copyright holders not be used in advertising or publicity
+ * pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Authors: Andrea Canciani <ranma42@gmail.com>
+ *
+ */
+
+#ifndef CAIRO_TIME_PRIVATE_H
+#define CAIRO_TIME_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-wideint-private.h"
+
+/* Make the base type signed for easier arithmetic */
+typedef cairo_int64_t cairo_time_t;
+
+#define _cairo_time_add _cairo_int64_add
+#define _cairo_time_sub _cairo_int64_sub
+#define _cairo_time_gt  _cairo_int64_gt
+#define _cairo_time_lt  _cairo_int64_lt
+
+#define _cairo_time_to_double   _cairo_int64_to_double
+#define _cairo_time_from_double _cairo_double_to_int64
+
+cairo_private int
+_cairo_time_cmp (const void *a,
+		 const void *b);
+
+cairo_private double
+_cairo_time_to_s (cairo_time_t t);
+
+cairo_private cairo_time_t
+_cairo_time_from_s (double t);
+
+cairo_private cairo_time_t
+_cairo_time_get (void);
+
+static cairo_always_inline cairo_time_t
+_cairo_time_get_delta (cairo_time_t t)
+{
+    cairo_time_t now;
+
+    now = _cairo_time_get ();
+
+    return _cairo_time_sub (now, t);
+}
+
+static cairo_always_inline double
+_cairo_time_to_ns (cairo_time_t t)
+{
+    return 1.e9 * _cairo_time_to_s (t);
+}
+
+static cairo_always_inline cairo_time_t
+_cairo_time_max (cairo_time_t a, cairo_time_t b)
+{
+    if (_cairo_int64_gt (a, b))
+	return a;
+    else
+	return b;
+}
+
+static cairo_always_inline cairo_time_t
+_cairo_time_min (cairo_time_t a, cairo_time_t b)
+{
+    if (_cairo_int64_lt (a, b))
+	return a;
+    else
+	return b;
+}
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-time.c b/libs/cairo-1.16.0/src/cairo-time.c
new file mode 100644
index 0000000..a0003fb
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-time.c
@@ -0,0 +1,225 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2007 Netlabs
+ * Copyright (c) 2006 Mozilla Corporation
+ * Copyright (c) 2006 Red Hat, Inc.
+ * Copyright (c) 2011 Andrea Canciani
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * the authors not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. The authors make no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Peter Weilbacher <mozilla@weilbacher.org>
+ *	    Vladimir Vukicevic <vladimir@pobox.com>
+ *	    Carl Worth <cworth@cworth.org>
+ *          Andrea Canciani <ranma42@gmail.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-time-private.h"
+
+#if HAVE_CLOCK_GETTIME
+#if defined(CLOCK_MONOTONIC_RAW)
+#define CAIRO_CLOCK CLOCK_MONOTONIC_RAW
+#elif defined(CLOCK_MONOTONIC)
+#define CAIRO_CLOCK CLOCK_MONOTONIC
+#endif
+#endif
+
+#if defined(__APPLE__)
+#include <mach/mach_time.h>
+
+static cairo_always_inline double
+_cairo_time_1s (void)
+{
+    mach_timebase_info_data_t freq;
+
+    mach_timebase_info (&freq);
+
+    return 1000000000. * freq.denom / freq.numer;
+}
+
+cairo_time_t
+_cairo_time_get (void)
+{
+    return mach_absolute_time ();
+}
+
+#elif defined(__OS2__)
+#define INCL_BASE
+#include <os2.h>
+
+static cairo_always_inline double
+_cairo_time_1s (void)
+{
+    ULONG freq;
+
+    DosTmrQueryFreq (&freq);
+
+    return freq;
+}
+
+cairo_time_t
+_cairo_time_get (void)
+{
+    QWORD t;
+    cairo_int64_t r;
+
+    DosTmrQueryTime (&t);
+
+    r = _cairo_int64_lsl (_cairo_int32_to_int64 (t.ulHi), 32);
+    r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.ulLo));
+
+    return r;
+}
+
+#elif _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+static cairo_always_inline double
+_cairo_time_1s (void)
+{
+    LARGE_INTEGER freq;
+
+    QueryPerformanceFrequency (&freq);
+
+    return freq.QuadPart;
+}
+
+#ifndef HAVE_UINT64_T
+static cairo_always_inline cairo_time_t
+_cairo_time_from_large_integer (LARGE_INTEGER t)
+{
+    cairo_int64_t r;
+
+    r = _cairo_int64_lsl (_cairo_int32_to_int64 (t.HighPart), 32);
+    r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.LowPart));
+
+    return r;
+}
+#else
+static cairo_always_inline cairo_time_t
+_cairo_time_from_large_integer (LARGE_INTEGER t)
+{
+    return t.QuadPart;
+}
+#endif
+
+cairo_time_t
+_cairo_time_get (void)
+{
+    LARGE_INTEGER t;
+
+    QueryPerformanceCounter (&t);
+
+    return _cairo_time_from_large_integer(t);
+}
+
+#elif defined(CAIRO_CLOCK)
+#include <time.h>
+
+static cairo_always_inline double
+_cairo_time_1s (void)
+{
+    return 1000000000;
+}
+
+cairo_time_t
+_cairo_time_get (void)
+{
+    struct timespec t;
+    cairo_time_t r;
+
+    clock_gettime (CAIRO_CLOCK, &t);
+
+    r = _cairo_double_to_int64 (_cairo_time_1s ());
+    r = _cairo_int64_mul (r, _cairo_int32_to_int64 (t.tv_sec));
+    r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.tv_nsec));
+
+    return r;
+}
+
+#else
+#include <sys/time.h>
+
+static cairo_always_inline double
+_cairo_time_1s (void)
+{
+    return 1000000;
+}
+
+cairo_time_t
+_cairo_time_get (void)
+{
+    struct timeval t;
+    cairo_time_t r;
+
+    gettimeofday (&t, NULL);
+
+    r = _cairo_double_to_int64 (_cairo_time_1s ());
+    r = _cairo_int64_mul (r, _cairo_int32_to_int64 (t.tv_sec));
+    r = _cairo_int64_add (r, _cairo_int32_to_int64 (t.tv_usec));
+
+    return r;
+}
+
+#endif
+
+int
+_cairo_time_cmp (const void *a,
+		 const void *b)
+{
+    const cairo_time_t *ta = a, *tb = b;
+    return _cairo_int64_cmp (*ta, *tb);
+}
+
+static double
+_cairo_time_ticks_per_sec (void)
+{
+    static double ticks = 0;
+
+    if (unlikely (ticks == 0))
+	ticks = _cairo_time_1s ();
+
+    return ticks;
+}
+
+static double
+_cairo_time_s_per_tick (void)
+{
+    static double s = 0;
+
+    if (unlikely (s == 0))
+	s = 1. / _cairo_time_ticks_per_sec ();
+
+    return s;
+}
+
+double
+_cairo_time_to_s (cairo_time_t t)
+{
+    return _cairo_int64_to_double (t) * _cairo_time_s_per_tick ();
+}
+
+cairo_time_t
+_cairo_time_from_s (double t)
+{
+    return _cairo_double_to_int64 (t * _cairo_time_ticks_per_sec ());
+}
diff --git a/libs/cairo-1.16.0/src/cairo-tor-scan-converter.c b/libs/cairo-1.16.0/src/cairo-tor-scan-converter.c
new file mode 100644
index 0000000..e8142d5
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tor-scan-converter.c
@@ -0,0 +1,1899 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* glitter-paths - polygon scan converter
+ *
+ * Copyright (c) 2008  M Joonas Pihlaja
+ * Copyright (c) 2007  David Turner
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+/* This is the Glitter paths scan converter incorporated into cairo.
+ * The source is from commit 734c53237a867a773640bd5b64816249fa1730f8
+ * of
+ *
+ *   https://gitweb.freedesktop.org/?p=users/joonas/glitter-paths
+ */
+/* Glitter-paths is a stand alone polygon rasteriser derived from
+ * David Turner's reimplementation of Tor Anderssons's 15x17
+ * supersampling rasteriser from the Apparition graphics library.  The
+ * main new feature here is cheaply choosing per-scan line between
+ * doing fully analytical coverage computation for an entire row at a
+ * time vs. using a supersampling approach.
+ *
+ * David Turner's code can be found at
+ *
+ *   http://david.freetype.org/rasterizer-shootout/raster-comparison-20070813.tar.bz2
+ *
+ * In particular this file incorporates large parts of ftgrays_tor10.h
+ * from raster-comparison-20070813.tar.bz2
+ */
+/* Overview
+ *
+ * A scan converter's basic purpose to take polygon edges and convert
+ * them into an RLE compressed A8 mask.  This one works in two phases:
+ * gathering edges and generating spans.
+ *
+ * 1) As the user feeds the scan converter edges they are vertically
+ * clipped and bucketted into a _polygon_ data structure.  The edges
+ * are also snapped from the user's coordinates to the subpixel grid
+ * coordinates used during scan conversion.
+ *
+ *     user
+ *      |
+ *      | edges
+ *      V
+ *    polygon buckets
+ *
+ * 2) Generating spans works by performing a vertical sweep of pixel
+ * rows from top to bottom and maintaining an _active_list_ of edges
+ * that intersect the row.  From the active list the fill rule
+ * determines which edges are the left and right edges of the start of
+ * each span, and their contribution is then accumulated into a pixel
+ * coverage list (_cell_list_) as coverage deltas.  Once the coverage
+ * deltas of all edges are known we can form spans of constant pixel
+ * coverage by summing the deltas during a traversal of the cell list.
+ * At the end of a pixel row the cell list is sent to a coverage
+ * blitter for rendering to some target surface.
+ *
+ * The pixel coverages are computed by either supersampling the row
+ * and box filtering a mono rasterisation, or by computing the exact
+ * coverages of edges in the active list.  The supersampling method is
+ * used whenever some edge starts or stops within the row or there are
+ * edge intersections in the row.
+ *
+ *   polygon bucket for       \
+ *   current pixel row        |
+ *      |                     |
+ *      | activate new edges  |  Repeat GRID_Y times if we
+ *      V                     \  are supersampling this row,
+ *   active list              /  or just once if we're computing
+ *      |                     |  analytical coverage.
+ *      | coverage deltas     |
+ *      V                     |
+ *   pixel coverage list     /
+ *      |
+ *      V
+ *   coverage blitter
+ */
+#include "cairoint.h"
+#include "cairo-spans-private.h"
+#include "cairo-error-private.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <setjmp.h>
+
+/*-------------------------------------------------------------------------
+ * cairo specific config
+ */
+#define I static
+
+/* Prefer cairo's status type. */
+#define GLITTER_HAVE_STATUS_T 1
+#define GLITTER_STATUS_SUCCESS CAIRO_STATUS_SUCCESS
+#define GLITTER_STATUS_NO_MEMORY CAIRO_STATUS_NO_MEMORY
+typedef cairo_status_t glitter_status_t;
+
+/* The input coordinate scale and the rasterisation grid scales. */
+#define GLITTER_INPUT_BITS CAIRO_FIXED_FRAC_BITS
+#define GRID_X_BITS CAIRO_FIXED_FRAC_BITS
+#define GRID_Y 15
+
+/* Set glitter up to use a cairo span renderer to do the coverage
+ * blitting. */
+struct pool;
+struct cell_list;
+
+/*-------------------------------------------------------------------------
+ * glitter-paths.h
+ */
+
+/* "Input scaled" numbers are fixed precision reals with multiplier
+ * 2**GLITTER_INPUT_BITS.  Input coordinates are given to glitter as
+ * pixel scaled numbers.  These get converted to the internal grid
+ * scaled numbers as soon as possible. Internal overflow is possible
+ * if GRID_X/Y inside glitter-paths.c is larger than
+ * 1<<GLITTER_INPUT_BITS. */
+#ifndef GLITTER_INPUT_BITS
+#  define GLITTER_INPUT_BITS 8
+#endif
+#define GLITTER_INPUT_SCALE (1<<GLITTER_INPUT_BITS)
+typedef int glitter_input_scaled_t;
+
+#if !GLITTER_HAVE_STATUS_T
+typedef enum {
+    GLITTER_STATUS_SUCCESS = 0,
+    GLITTER_STATUS_NO_MEMORY
+} glitter_status_t;
+#endif
+
+#ifndef I
+# define I /*static*/
+#endif
+
+/* Opaque type for scan converting. */
+typedef struct glitter_scan_converter glitter_scan_converter_t;
+
+/* Reset a scan converter to accept polygon edges and set the clip box
+ * in pixels.  Allocates O(ymax-ymin) bytes of memory.	The clip box
+ * is set to integer pixel coordinates xmin <= x < xmax, ymin <= y <
+ * ymax. */
+I glitter_status_t
+glitter_scan_converter_reset(
+    glitter_scan_converter_t *converter,
+    int xmin, int ymin,
+    int xmax, int ymax);
+
+/* Render the polygon in the scan converter to the given A8 format
+ * image raster.  Only the pixels accessible as pixels[y*stride+x] for
+ * x,y inside the clip box are written to, where xmin <= x < xmax,
+ * ymin <= y < ymax.  The image is assumed to be clear on input.
+ *
+ * If nonzero_fill is true then the interior of the polygon is
+ * computed with the non-zero fill rule.  Otherwise the even-odd fill
+ * rule is used.
+ *
+ * The scan converter must be reset or destroyed after this call. */
+
+/*-------------------------------------------------------------------------
+ * glitter-paths.c: Implementation internal types
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+/* All polygon coordinates are snapped onto a subsample grid. "Grid
+ * scaled" numbers are fixed precision reals with multiplier GRID_X or
+ * GRID_Y. */
+typedef int grid_scaled_t;
+typedef int grid_scaled_x_t;
+typedef int grid_scaled_y_t;
+
+/* Default x/y scale factors.
+ *  You can either define GRID_X/Y_BITS to get a power-of-two scale
+ *  or define GRID_X/Y separately. */
+#if !defined(GRID_X) && !defined(GRID_X_BITS)
+#  define GRID_X_BITS 8
+#endif
+#if !defined(GRID_Y) && !defined(GRID_Y_BITS)
+#  define GRID_Y 15
+#endif
+
+/* Use GRID_X/Y_BITS to define GRID_X/Y if they're available. */
+#ifdef GRID_X_BITS
+#  define GRID_X (1 << GRID_X_BITS)
+#endif
+#ifdef GRID_Y_BITS
+#  define GRID_Y (1 << GRID_Y_BITS)
+#endif
+
+/* The GRID_X_TO_INT_FRAC macro splits a grid scaled coordinate into
+ * integer and fractional parts. The integer part is floored. */
+#if defined(GRID_X_TO_INT_FRAC)
+  /* do nothing */
+#elif defined(GRID_X_BITS)
+#  define GRID_X_TO_INT_FRAC(x, i, f) \
+	_GRID_TO_INT_FRAC_shift(x, i, f, GRID_X_BITS)
+#else
+#  define GRID_X_TO_INT_FRAC(x, i, f) \
+	_GRID_TO_INT_FRAC_general(x, i, f, GRID_X)
+#endif
+
+#define _GRID_TO_INT_FRAC_general(t, i, f, m) do {	\
+    (i) = (t) / (m);					\
+    (f) = (t) % (m);					\
+    if ((f) < 0) {					\
+	--(i);						\
+	(f) += (m);					\
+    }							\
+} while (0)
+
+#define _GRID_TO_INT_FRAC_shift(t, i, f, b) do {	\
+    (f) = (t) & ((1 << (b)) - 1);			\
+    (i) = (t) >> (b);					\
+} while (0)
+
+/* A grid area is a real in [0,1] scaled by 2*GRID_X*GRID_Y.  We want
+ * to be able to represent exactly areas of subpixel trapezoids whose
+ * vertices are given in grid scaled coordinates.  The scale factor
+ * comes from needing to accurately represent the area 0.5*dx*dy of a
+ * triangle with base dx and height dy in grid scaled numbers. */
+#define GRID_XY (2*GRID_X*GRID_Y) /* Unit area on the grid. */
+
+/* GRID_AREA_TO_ALPHA(area): map [0,GRID_XY] to [0,255]. */
+#if GRID_XY == 510
+#  define GRID_AREA_TO_ALPHA(c)	  (((c)+1) >> 1)
+#elif GRID_XY == 255
+#  define  GRID_AREA_TO_ALPHA(c)  (c)
+#elif GRID_XY == 64
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 2) | -(((c) & 0x40) >> 6))
+#elif GRID_XY == 128
+#  define  GRID_AREA_TO_ALPHA(c)  ((((c) << 1) | -((c) >> 7)) & 255)
+#elif GRID_XY == 256
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) | -((c) >> 8)) & 255)
+#elif GRID_XY == 15
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 4) + (c))
+#elif GRID_XY == 2*256*15
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) + ((c)<<4) + 256) >> 9)
+#else
+#  define  GRID_AREA_TO_ALPHA(c)  (((c)*255 + GRID_XY/2) / GRID_XY)
+#endif
+
+#define UNROLL3(x) x x x
+
+struct quorem {
+    int32_t quo;
+    int64_t rem;
+};
+
+/* Header for a chunk of memory in a memory pool. */
+struct _pool_chunk {
+    /* # bytes used in this chunk. */
+    size_t size;
+
+    /* # bytes total in this chunk */
+    size_t capacity;
+
+    /* Pointer to the previous chunk or %NULL if this is the sentinel
+     * chunk in the pool header. */
+    struct _pool_chunk *prev_chunk;
+
+    /* Actual data starts here. Well aligned even for 64 bit types. */
+    int64_t data;
+};
+
+/* The int64_t data member of _pool_chunk just exists to enforce alignment,
+ * it shouldn't be included in the allocated size for the struct. */
+#define SIZEOF_POOL_CHUNK (sizeof(struct _pool_chunk) - sizeof(int64_t))
+
+/* A memory pool.  This is supposed to be embedded on the stack or
+ * within some other structure.	 It may optionally be followed by an
+ * embedded array from which requests are fulfilled until
+ * malloc needs to be called to allocate a first real chunk. */
+struct pool {
+    /* Chunk we're allocating from. */
+    struct _pool_chunk *current;
+
+    jmp_buf *jmp;
+
+    /* Free list of previously allocated chunks.  All have >= default
+     * capacity. */
+    struct _pool_chunk *first_free;
+
+    /* The default capacity of a chunk. */
+    size_t default_capacity;
+
+    /* Header for the sentinel chunk.  Directly following the pool
+     * struct should be some space for embedded elements from which
+     * the sentinel chunk allocates from. This is expressed as a char
+     * array so that the 'int64_t data' member of _pool_chunk isn't
+     * included. This way embedding struct pool in other structs works
+     * without wasting space. */
+    char sentinel[SIZEOF_POOL_CHUNK];
+};
+
+/* A polygon edge. */
+struct edge {
+    /* Next in y-bucket or active list. */
+    struct edge *next, *prev;
+
+    /* The clipped y of the top of the edge. */
+    grid_scaled_y_t ytop;
+
+    /* Number of subsample rows remaining to scan convert of this
+     * edge. */
+    grid_scaled_y_t height_left;
+
+    /* Original sign of the edge: +1 for downwards, -1 for upwards
+     * edges.  */
+    int dir;
+    int cell;
+
+    /* Current x coordinate while the edge is on the active
+     * list. Initialised to the x coordinate of the top of the
+     * edge. The quotient is in grid_scaled_x_t units and the
+     * remainder is mod dy in grid_scaled_y_t units.*/
+    struct quorem x;
+
+    /* Advance of the current x when moving down a subsample line. */
+    struct quorem dxdy;
+
+    /* Advance of the current x when moving down a full pixel
+     * row. Only initialised when the height of the edge is large
+     * enough that there's a chance the edge could be stepped by a
+     * full row's worth of subsample rows at a time. */
+    struct quorem dxdy_full;
+
+    /* y2-y1 after orienting the edge downwards.  */
+    int64_t dy;
+};
+
+#define EDGE_Y_BUCKET_INDEX(y, ymin) (((y) - (ymin))/GRID_Y)
+
+/* A collection of sorted and vertically clipped edges of the polygon.
+ * Edges are moved from the polygon to an active list while scan
+ * converting. */
+struct polygon {
+    /* The vertical clip extents. */
+    grid_scaled_y_t ymin, ymax;
+
+    /* Array of edges all starting in the same bucket.	An edge is put
+     * into bucket EDGE_BUCKET_INDEX(edge->ytop, polygon->ymin) when
+     * it is added to the polygon. */
+    struct edge **y_buckets;
+    struct edge *y_buckets_embedded[64];
+
+    struct {
+	struct pool base[1];
+	struct edge embedded[32];
+    } edge_pool;
+};
+
+/* A cell records the effect on pixel coverage of polygon edges
+ * passing through a pixel.  It contains two accumulators of pixel
+ * coverage.
+ *
+ * Consider the effects of a polygon edge on the coverage of a pixel
+ * it intersects and that of the following one.  The coverage of the
+ * following pixel is the height of the edge multiplied by the width
+ * of the pixel, and the coverage of the pixel itself is the area of
+ * the trapezoid formed by the edge and the right side of the pixel.
+ *
+ * +-----------------------+-----------------------+
+ * |                       |                       |
+ * |                       |                       |
+ * |_______________________|_______________________|
+ * |   \...................|.......................|\
+ * |    \..................|.......................| |
+ * |     \.................|.......................| |
+ * |      \....covered.....|.......................| |
+ * |       \....area.......|.......................| } covered height
+ * |        \..............|.......................| |
+ * |uncovered\.............|.......................| |
+ * |  area    \............|.......................| |
+ * |___________\...........|.......................|/
+ * |                       |                       |
+ * |                       |                       |
+ * |                       |                       |
+ * +-----------------------+-----------------------+
+ *
+ * Since the coverage of the following pixel will always be a multiple
+ * of the width of the pixel, we can store the height of the covered
+ * area instead.  The coverage of the pixel itself is the total
+ * coverage minus the area of the uncovered area to the left of the
+ * edge.  As it's faster to compute the uncovered area we only store
+ * that and subtract it from the total coverage later when forming
+ * spans to blit.
+ *
+ * The heights and areas are signed, with left edges of the polygon
+ * having positive sign and right edges having negative sign.  When
+ * two edges intersect they swap their left/rightness so their
+ * contribution above and below the intersection point must be
+ * computed separately. */
+struct cell {
+    struct cell		*next;
+    int			 x;
+    int16_t		 uncovered_area;
+    int16_t		 covered_height;
+};
+
+/* A cell list represents the scan line sparsely as cells ordered by
+ * ascending x.  It is geared towards scanning the cells in order
+ * using an internal cursor. */
+struct cell_list {
+    /* Sentinel nodes */
+    struct cell head, tail;
+
+    /* Cursor state for iterating through the cell list. */
+    struct cell *cursor, *rewind;
+
+    /* Cells in the cell list are owned by the cell list and are
+     * allocated from this pool.  */
+    struct {
+	struct pool base[1];
+	struct cell embedded[32];
+    } cell_pool;
+};
+
+struct cell_pair {
+    struct cell *cell1;
+    struct cell *cell2;
+};
+
+/* The active list contains edges in the current scan line ordered by
+ * the x-coordinate of the intercept of the edge and the scan line. */
+struct active_list {
+    /* Leftmost edge on the current scan line. */
+    struct edge head, tail;
+
+    /* A lower bound on the height of the active edges is used to
+     * estimate how soon some active edge ends.	 We can't advance the
+     * scan conversion by a full pixel row if an edge ends somewhere
+     * within it. */
+    grid_scaled_y_t min_height;
+    int is_vertical;
+};
+
+struct glitter_scan_converter {
+    struct polygon	polygon[1];
+    struct active_list	active[1];
+    struct cell_list	coverages[1];
+
+    cairo_half_open_span_t *spans;
+    cairo_half_open_span_t spans_embedded[64];
+
+    /* Clip box. */
+    grid_scaled_x_t xmin, xmax;
+    grid_scaled_y_t ymin, ymax;
+};
+
+static struct _pool_chunk *
+_pool_chunk_init(
+    struct _pool_chunk *p,
+    struct _pool_chunk *prev_chunk,
+    size_t capacity)
+{
+    p->prev_chunk = prev_chunk;
+    p->size = 0;
+    p->capacity = capacity;
+    return p;
+}
+
+static struct _pool_chunk *
+_pool_chunk_create(struct pool *pool, size_t size)
+{
+    struct _pool_chunk *p;
+
+    p = _cairo_malloc (SIZEOF_POOL_CHUNK + size);
+    if (unlikely (NULL == p))
+	longjmp (*pool->jmp, _cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    return _pool_chunk_init(p, pool->current, size);
+}
+
+static void
+pool_init(struct pool *pool,
+	  jmp_buf *jmp,
+	  size_t default_capacity,
+	  size_t embedded_capacity)
+{
+    pool->jmp = jmp;
+    pool->current = (void*) pool->sentinel;
+    pool->first_free = NULL;
+    pool->default_capacity = default_capacity;
+    _pool_chunk_init(pool->current, NULL, embedded_capacity);
+}
+
+static void
+pool_fini(struct pool *pool)
+{
+    struct _pool_chunk *p = pool->current;
+    do {
+	while (NULL != p) {
+	    struct _pool_chunk *prev = p->prev_chunk;
+	    if (p != (void *) pool->sentinel)
+		free(p);
+	    p = prev;
+	}
+	p = pool->first_free;
+	pool->first_free = NULL;
+    } while (NULL != p);
+}
+
+/* Satisfy an allocation by first allocating a new large enough chunk
+ * and adding it to the head of the pool's chunk list. This function
+ * is called as a fallback if pool_alloc() couldn't do a quick
+ * allocation from the current chunk in the pool. */
+static void *
+_pool_alloc_from_new_chunk(
+    struct pool *pool,
+    size_t size)
+{
+    struct _pool_chunk *chunk;
+    void *obj;
+    size_t capacity;
+
+    /* If the allocation is smaller than the default chunk size then
+     * try getting a chunk off the free list.  Force alloc of a new
+     * chunk for large requests. */
+    capacity = size;
+    chunk = NULL;
+    if (size < pool->default_capacity) {
+	capacity = pool->default_capacity;
+	chunk = pool->first_free;
+	if (chunk) {
+	    pool->first_free = chunk->prev_chunk;
+	    _pool_chunk_init(chunk, pool->current, chunk->capacity);
+	}
+    }
+
+    if (NULL == chunk)
+	chunk = _pool_chunk_create (pool, capacity);
+    pool->current = chunk;
+
+    obj = ((unsigned char*)&chunk->data + chunk->size);
+    chunk->size += size;
+    return obj;
+}
+
+/* Allocate size bytes from the pool.  The first allocated address
+ * returned from a pool is aligned to 8 bytes.  Subsequent
+ * addresses will maintain alignment as long as multiples of 8 are
+ * allocated.  Returns the address of a new memory area or %NULL on
+ * allocation failures.	 The pool retains ownership of the returned
+ * memory. */
+inline static void *
+pool_alloc (struct pool *pool, size_t size)
+{
+    struct _pool_chunk *chunk = pool->current;
+
+    if (size <= chunk->capacity - chunk->size) {
+	void *obj = ((unsigned char*)&chunk->data + chunk->size);
+	chunk->size += size;
+	return obj;
+    } else {
+	return _pool_alloc_from_new_chunk(pool, size);
+    }
+}
+
+/* Relinquish all pool_alloced memory back to the pool. */
+static void
+pool_reset (struct pool *pool)
+{
+    /* Transfer all used chunks to the chunk free list. */
+    struct _pool_chunk *chunk = pool->current;
+    if (chunk != (void *) pool->sentinel) {
+	while (chunk->prev_chunk != (void *) pool->sentinel) {
+	    chunk = chunk->prev_chunk;
+	}
+	chunk->prev_chunk = pool->first_free;
+	pool->first_free = pool->current;
+    }
+    /* Reset the sentinel as the current chunk. */
+    pool->current = (void *) pool->sentinel;
+    pool->current->size = 0;
+}
+
+/* Rewinds the cell list's cursor to the beginning.  After rewinding
+ * we're good to cell_list_find() the cell any x coordinate. */
+inline static void
+cell_list_rewind (struct cell_list *cells)
+{
+    cells->cursor = &cells->head;
+}
+
+inline static void
+cell_list_maybe_rewind (struct cell_list *cells, int x)
+{
+    if (x < cells->cursor->x) {
+	cells->cursor = cells->rewind;
+	if (x < cells->cursor->x)
+	    cells->cursor = &cells->head;
+    }
+}
+
+inline static void
+cell_list_set_rewind (struct cell_list *cells)
+{
+    cells->rewind = cells->cursor;
+}
+
+static void
+cell_list_init(struct cell_list *cells, jmp_buf *jmp)
+{
+    pool_init(cells->cell_pool.base, jmp,
+	      256*sizeof(struct cell),
+	      sizeof(cells->cell_pool.embedded));
+    cells->tail.next = NULL;
+    cells->tail.x = INT_MAX;
+    cells->head.x = INT_MIN;
+    cells->head.next = &cells->tail;
+    cell_list_rewind (cells);
+}
+
+static void
+cell_list_fini(struct cell_list *cells)
+{
+    pool_fini (cells->cell_pool.base);
+}
+
+/* Empty the cell list.  This is called at the start of every pixel
+ * row. */
+inline static void
+cell_list_reset (struct cell_list *cells)
+{
+    cell_list_rewind (cells);
+    cells->head.next = &cells->tail;
+    pool_reset (cells->cell_pool.base);
+}
+
+inline static struct cell *
+cell_list_alloc (struct cell_list *cells,
+		 struct cell *tail,
+		 int x)
+{
+    struct cell *cell;
+
+    cell = pool_alloc (cells->cell_pool.base, sizeof (struct cell));
+    cell->next = tail->next;
+    tail->next = cell;
+    cell->x = x;
+    *(uint32_t *)&cell->uncovered_area = 0;
+
+    return cell;
+}
+
+/* Find a cell at the given x-coordinate.  Returns %NULL if a new cell
+ * needed to be allocated but couldn't be.  Cells must be found with
+ * non-decreasing x-coordinate until the cell list is rewound using
+ * cell_list_rewind(). Ownership of the returned cell is retained by
+ * the cell list. */
+inline static struct cell *
+cell_list_find (struct cell_list *cells, int x)
+{
+    struct cell *tail = cells->cursor;
+
+    if (tail->x == x)
+	return tail;
+
+    while (1) {
+	UNROLL3({
+		if (tail->next->x > x)
+			break;
+		tail = tail->next;
+	});
+    }
+
+    if (tail->x != x)
+	tail = cell_list_alloc (cells, tail, x);
+    return cells->cursor = tail;
+
+}
+
+/* Find two cells at x1 and x2.	 This is exactly equivalent
+ * to
+ *
+ *   pair.cell1 = cell_list_find(cells, x1);
+ *   pair.cell2 = cell_list_find(cells, x2);
+ *
+ * except with less function call overhead. */
+inline static struct cell_pair
+cell_list_find_pair(struct cell_list *cells, int x1, int x2)
+{
+    struct cell_pair pair;
+
+    pair.cell1 = cells->cursor;
+    while (1) {
+	UNROLL3({
+		if (pair.cell1->next->x > x1)
+			break;
+		pair.cell1 = pair.cell1->next;
+	});
+    }
+    if (pair.cell1->x != x1)
+	pair.cell1 = cell_list_alloc (cells, pair.cell1, x1);
+
+    pair.cell2 = pair.cell1;
+    while (1) {
+	UNROLL3({
+		if (pair.cell2->next->x > x2)
+			break;
+		pair.cell2 = pair.cell2->next;
+	});
+    }
+    if (pair.cell2->x != x2)
+	pair.cell2 = cell_list_alloc (cells, pair.cell2, x2);
+
+    cells->cursor = pair.cell2;
+    return pair;
+}
+
+/* Add a subpixel span covering [x1, x2) to the coverage cells. */
+inline static void
+cell_list_add_subspan(struct cell_list *cells,
+		      grid_scaled_x_t x1,
+		      grid_scaled_x_t x2)
+{
+    int ix1, fx1;
+    int ix2, fx2;
+
+    if (x1 == x2)
+	return;
+
+    GRID_X_TO_INT_FRAC(x1, ix1, fx1);
+    GRID_X_TO_INT_FRAC(x2, ix2, fx2);
+
+    if (ix1 != ix2) {
+	struct cell_pair p;
+	p = cell_list_find_pair(cells, ix1, ix2);
+	p.cell1->uncovered_area += 2*fx1;
+	++p.cell1->covered_height;
+	p.cell2->uncovered_area -= 2*fx2;
+	--p.cell2->covered_height;
+    } else {
+	struct cell *cell = cell_list_find(cells, ix1);
+	cell->uncovered_area += 2*(fx1-fx2);
+    }
+}
+
+inline static void full_step (struct edge *e)
+{
+    if (e->dy == 0)
+	return;
+
+    e->x.quo += e->dxdy_full.quo;
+    e->x.rem += e->dxdy_full.rem;
+    if (e->x.rem < 0) {
+	e->x.quo--;
+	e->x.rem += e->dy;
+    } else if (e->x.rem >= e->dy) {
+	++e->x.quo;
+	e->x.rem -= e->dy;
+    }
+
+    e->cell = e->x.quo + (e->x.rem >= e->dy/2);
+}
+
+
+/* Adds the analytical coverage of an edge crossing the current pixel
+ * row to the coverage cells and advances the edge's x position to the
+ * following row.
+ *
+ * This function is only called when we know that during this pixel row:
+ *
+ * 1) The relative order of all edges on the active list doesn't
+ * change.  In particular, no edges intersect within this row to pixel
+ * precision.
+ *
+ * 2) No new edges start in this row.
+ *
+ * 3) No existing edges end mid-row.
+ *
+ * This function depends on being called with all edges from the
+ * active list in the order they appear on the list (i.e. with
+ * non-decreasing x-coordinate.)  */
+static void
+cell_list_render_edge(struct cell_list *cells,
+		      struct edge *edge,
+		      int sign)
+{
+    struct quorem x1, x2;
+    grid_scaled_x_t fx1, fx2;
+    int ix1, ix2;
+
+    x1 = edge->x;
+    full_step (edge);
+    x2 = edge->x;
+
+    /* Step back from the sample location (half-subrow) to the pixel origin */
+    if (edge->dy) {
+	x1.quo -= edge->dxdy.quo / 2;
+	x1.rem -= edge->dxdy.rem / 2;
+	if (x1.rem < 0) {
+	    --x1.quo;
+	    x1.rem += edge->dy;
+	} else if (x1.rem >= edge->dy) {
+	    ++x1.quo;
+	    x1.rem -= edge->dy;
+	}
+
+	x2.quo -= edge->dxdy.quo / 2;
+	x2.rem -= edge->dxdy.rem / 2;
+	if (x2.rem < 0) {
+	    --x2.quo;
+	    x2.rem += edge->dy;
+	} else if (x2.rem >= edge->dy) {
+	    ++x2.quo;
+	    x2.rem -= edge->dy;
+	}
+    }
+
+    GRID_X_TO_INT_FRAC(x1.quo, ix1, fx1);
+    GRID_X_TO_INT_FRAC(x2.quo, ix2, fx2);
+
+    cell_list_maybe_rewind(cells, MIN(ix1, ix2));
+
+    /* Edge is entirely within a column? */
+    if (ix1 == ix2) {
+	/* We always know that ix1 is >= the cell list cursor in this
+	 * case due to the no-intersections precondition.  */
+	struct cell *cell = cell_list_find(cells, ix1);
+	cell->covered_height += sign*GRID_Y;
+	cell->uncovered_area += sign*(fx1 + fx2)*GRID_Y;
+	return;
+    }
+
+    /* Orient the edge left-to-right. */
+    if (ix2 < ix1) {
+	struct quorem tx;
+	int t;
+
+	t = ix1;
+	ix1 = ix2;
+	ix2 = t;
+
+	t = fx1;
+	fx1 = fx2;
+	fx2 = t;
+
+	tx = x1;
+	x1 = x2;
+	x2 = tx;
+    }
+
+    /* Add coverage for all pixels [ix1,ix2] on this row crossed
+     * by the edge. */
+    {
+	struct cell_pair pair;
+	struct quorem y;
+	int64_t tmp, dx;
+	int y_last;
+
+	dx = (x2.quo - x1.quo) * edge->dy + (x2.rem - x1.rem);
+
+	tmp = (ix1 + 1) * GRID_X * edge->dy;
+	tmp -= x1.quo * edge->dy + x1.rem;
+	tmp *= GRID_Y;
+
+	y.quo = tmp / dx;
+	y.rem = tmp % dx;
+
+	/* When rendering a previous edge on the active list we may
+	 * advance the cell list cursor past the leftmost pixel of the
+	 * current edge even though the two edges don't intersect.
+	 * e.g. consider two edges going down and rightwards:
+	 *
+	 *  --\_+---\_+-----+-----+----
+	 *      \_    \_    |     |
+	 *      | \_  | \_  |     |
+	 *      |   \_|   \_|     |
+	 *      |     \_    \_    |
+	 *  ----+-----+-\---+-\---+----
+	 *
+	 * The left edge touches cells past the starting cell of the
+	 * right edge.  Fortunately such cases are rare.
+	 */
+
+	pair = cell_list_find_pair(cells, ix1, ix1+1);
+	pair.cell1->uncovered_area += sign*y.quo*(GRID_X + fx1);
+	pair.cell1->covered_height += sign*y.quo;
+	y_last = y.quo;
+
+	if (ix1+1 < ix2) {
+	    struct cell *cell = pair.cell2;
+	    struct quorem dydx_full;
+
+	    dydx_full.quo = GRID_Y * GRID_X * edge->dy / dx;
+	    dydx_full.rem = GRID_Y * GRID_X * edge->dy % dx;
+
+	    ++ix1;
+	    do {
+		y.quo += dydx_full.quo;
+		y.rem += dydx_full.rem;
+		if (y.rem >= dx) {
+		    y.quo++;
+		    y.rem -= dx;
+		}
+
+		cell->uncovered_area += sign*(y.quo - y_last)*GRID_X;
+		cell->covered_height += sign*(y.quo - y_last);
+		y_last = y.quo;
+
+		++ix1;
+		cell = cell_list_find(cells, ix1);
+	    } while (ix1 != ix2);
+
+	    pair.cell2 = cell;
+	}
+	pair.cell2->uncovered_area += sign*(GRID_Y - y_last)*fx2;
+	pair.cell2->covered_height += sign*(GRID_Y - y_last);
+    }
+}
+
+static void
+polygon_init (struct polygon *polygon, jmp_buf *jmp)
+{
+    polygon->ymin = polygon->ymax = 0;
+    polygon->y_buckets = polygon->y_buckets_embedded;
+    pool_init (polygon->edge_pool.base, jmp,
+	       8192 - sizeof (struct _pool_chunk),
+	       sizeof (polygon->edge_pool.embedded));
+}
+
+static void
+polygon_fini (struct polygon *polygon)
+{
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    pool_fini (polygon->edge_pool.base);
+}
+
+/* Empties the polygon of all edges. The polygon is then prepared to
+ * receive new edges and clip them to the vertical range
+ * [ymin,ymax). */
+static glitter_status_t
+polygon_reset (struct polygon *polygon,
+	       grid_scaled_y_t ymin,
+	       grid_scaled_y_t ymax)
+{
+    unsigned h = ymax - ymin;
+    unsigned num_buckets = EDGE_Y_BUCKET_INDEX(ymax + GRID_Y-1, ymin);
+
+    pool_reset(polygon->edge_pool.base);
+
+    if (unlikely (h > 0x7FFFFFFFU - GRID_Y))
+	goto bail_no_mem; /* even if you could, you wouldn't want to. */
+
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    polygon->y_buckets =  polygon->y_buckets_embedded;
+    if (num_buckets > ARRAY_LENGTH (polygon->y_buckets_embedded)) {
+	polygon->y_buckets = _cairo_malloc_ab (num_buckets,
+					       sizeof (struct edge *));
+	if (unlikely (NULL == polygon->y_buckets))
+	    goto bail_no_mem;
+    }
+    memset (polygon->y_buckets, 0, num_buckets * sizeof (struct edge *));
+
+    polygon->ymin = ymin;
+    polygon->ymax = ymax;
+    return GLITTER_STATUS_SUCCESS;
+
+bail_no_mem:
+    polygon->ymin = 0;
+    polygon->ymax = 0;
+    return GLITTER_STATUS_NO_MEMORY;
+}
+
+static void
+_polygon_insert_edge_into_its_y_bucket(struct polygon *polygon,
+				       struct edge *e)
+{
+    unsigned ix = EDGE_Y_BUCKET_INDEX(e->ytop, polygon->ymin);
+    struct edge **ptail = &polygon->y_buckets[ix];
+    e->next = *ptail;
+    *ptail = e;
+}
+
+static void
+active_list_reset (struct active_list *active)
+{
+    active->head.height_left = INT_MAX;
+    active->head.dy = 0;
+    active->head.cell = INT_MIN;
+    active->head.prev = NULL;
+    active->head.next = &active->tail;
+    active->tail.prev = &active->head;
+    active->tail.next = NULL;
+    active->tail.cell = INT_MAX;
+    active->tail.height_left = INT_MAX;
+    active->tail.dy = 0;
+    active->min_height = 0;
+    active->is_vertical = 1;
+}
+
+static void
+active_list_init(struct active_list *active)
+{
+    active_list_reset(active);
+}
+
+/*
+ * Merge two sorted edge lists.
+ * Input:
+ *  - head_a: The head of the first list.
+ *  - head_b: The head of the second list; head_b cannot be NULL.
+ * Output:
+ * Returns the head of the merged list.
+ *
+ * Implementation notes:
+ * To make it fast (in particular, to reduce to an insertion sort whenever
+ * one of the two input lists only has a single element) we iterate through
+ * a list until its head becomes greater than the head of the other list,
+ * then we switch their roles. As soon as one of the two lists is empty, we
+ * just attach the other one to the current list and exit.
+ * Writes to memory are only needed to "switch" lists (as it also requires
+ * attaching to the output list the list which we will be iterating next) and
+ * to attach the last non-empty list.
+ */
+static struct edge *
+merge_sorted_edges (struct edge *head_a, struct edge *head_b)
+{
+    struct edge *head, **next, *prev;
+    int32_t x;
+
+    prev = head_a->prev;
+    next = &head;
+    if (head_a->cell <= head_b->cell) {
+	head = head_a;
+    } else {
+	head = head_b;
+	head_b->prev = prev;
+	goto start_with_b;
+    }
+
+    do {
+	x = head_b->cell;
+	while (head_a != NULL && head_a->cell <= x) {
+	    prev = head_a;
+	    next = &head_a->next;
+	    head_a = head_a->next;
+	}
+
+	head_b->prev = prev;
+	*next = head_b;
+	if (head_a == NULL)
+	    return head;
+
+start_with_b:
+	x = head_a->cell;
+	while (head_b != NULL && head_b->cell <= x) {
+	    prev = head_b;
+	    next = &head_b->next;
+	    head_b = head_b->next;
+	}
+
+	head_a->prev = prev;
+	*next = head_a;
+	if (head_b == NULL)
+	    return head;
+    } while (1);
+}
+
+/*
+ * Sort (part of) a list.
+ * Input:
+ *  - list: The list to be sorted; list cannot be NULL.
+ *  - limit: Recursion limit.
+ * Output:
+ *  - head_out: The head of the sorted list containing the first 2^(level+1) elements of the
+ *              input list; if the input list has fewer elements, head_out be a sorted list
+ *              containing all the elements of the input list.
+ * Returns the head of the list of unprocessed elements (NULL if the sorted list contains
+ * all the elements of the input list).
+ *
+ * Implementation notes:
+ * Special case single element list, unroll/inline the sorting of the first two elements.
+ * Some tail recursion is used since we iterate on the bottom-up solution of the problem
+ * (we start with a small sorted list and keep merging other lists of the same size to it).
+ */
+static struct edge *
+sort_edges (struct edge *list,
+	    unsigned int level,
+	    struct edge **head_out)
+{
+    struct edge *head_other, *remaining;
+    unsigned int i;
+
+    head_other = list->next;
+
+    if (head_other == NULL) {
+	*head_out = list;
+	return NULL;
+    }
+
+    remaining = head_other->next;
+    if (list->cell <= head_other->cell) {
+	*head_out = list;
+	head_other->next = NULL;
+    } else {
+	*head_out = head_other;
+	head_other->prev = list->prev;
+	head_other->next = list;
+	list->prev = head_other;
+	list->next = NULL;
+    }
+
+    for (i = 0; i < level && remaining; i++) {
+	remaining = sort_edges (remaining, i, &head_other);
+	*head_out = merge_sorted_edges (*head_out, head_other);
+    }
+
+    return remaining;
+}
+
+ static struct edge *
+merge_unsorted_edges (struct edge *head, struct edge *unsorted)
+{
+    sort_edges (unsorted, UINT_MAX, &unsorted);
+    return merge_sorted_edges (head, unsorted);
+}
+
+/* Test if the edges on the active list can be safely advanced by a
+ * full row without intersections or any edges ending. */
+inline static int
+can_do_full_row (struct active_list *active)
+{
+    const struct edge *e;
+    int prev_x = INT_MIN;
+
+    /* Recomputes the minimum height of all edges on the active
+     * list if we have been dropping edges. */
+    if (active->min_height <= 0) {
+	int min_height = INT_MAX;
+	int is_vertical = 1;
+
+	e = active->head.next;
+	while (NULL != e) {
+	    if (e->height_left < min_height)
+		min_height = e->height_left;
+	    is_vertical &= e->dy == 0;
+	    e = e->next;
+	}
+
+	active->is_vertical = is_vertical;
+	active->min_height = min_height;
+    }
+
+    if (active->min_height < GRID_Y)
+	return 0;
+
+    /* Check for intersections as no edges end during the next row. */
+    for (e = active->head.next; e != &active->tail; e = e->next) {
+	int cell;
+
+	if (e->dy) {
+	    struct quorem x = e->x;
+	    x.quo += e->dxdy_full.quo;
+	    x.rem += e->dxdy_full.rem;
+	    if (x.rem < 0) {
+		x.quo--;
+		x.rem += e->dy;
+	    } else if (x.rem >= e->dy) {
+		x.quo++;
+		x.rem -= e->dy;
+	    }
+	    cell = x.quo + (x.rem >= e->dy/2);
+	} else
+	    cell = e->cell;
+
+	if (cell < prev_x)
+	    return 0;
+
+	prev_x = cell;
+    }
+
+    return 1;
+}
+
+/* Merges edges on the given subpixel row from the polygon to the
+ * active_list. */
+inline static void
+active_list_merge_edges_from_bucket(struct active_list *active,
+				    struct edge *edges)
+{
+    active->head.next = merge_unsorted_edges (active->head.next, edges);
+}
+
+inline static int
+polygon_fill_buckets (struct active_list *active,
+		      struct edge *edge,
+		      int y,
+		      struct edge **buckets)
+{
+    grid_scaled_y_t min_height = active->min_height;
+    int is_vertical = active->is_vertical;
+    int max_suby = 0;
+
+    while (edge) {
+	struct edge *next = edge->next;
+	int suby = edge->ytop - y;
+	if (buckets[suby])
+	    buckets[suby]->prev = edge;
+	edge->next = buckets[suby];
+	edge->prev = NULL;
+	buckets[suby] = edge;
+	if (edge->height_left < min_height)
+	    min_height = edge->height_left;
+	is_vertical &= edge->dy == 0;
+	edge = next;
+	if (suby > max_suby)
+		max_suby = suby;
+    }
+
+    active->is_vertical = is_vertical;
+    active->min_height = min_height;
+
+    return max_suby;
+}
+
+static void step (struct edge *edge)
+{
+    if (edge->dy == 0)
+	return;
+
+    edge->x.quo += edge->dxdy.quo;
+    edge->x.rem += edge->dxdy.rem;
+    if (edge->x.rem < 0) {
+	--edge->x.quo;
+	edge->x.rem += edge->dy;
+    } else if (edge->x.rem >= edge->dy) {
+	++edge->x.quo;
+	edge->x.rem -= edge->dy;
+    }
+
+    edge->cell = edge->x.quo + (edge->x.rem >= edge->dy/2);
+}
+
+inline static void
+sub_row (struct active_list *active,
+	 struct cell_list *coverages,
+	 unsigned int mask)
+{
+    struct edge *edge = active->head.next;
+    int xstart = INT_MIN, prev_x = INT_MIN;
+    int winding = 0;
+
+    cell_list_rewind (coverages);
+
+    while (&active->tail != edge) {
+	struct edge *next = edge->next;
+	int xend = edge->cell;
+
+	if (--edge->height_left) {
+	    step (edge);
+
+	    if (edge->cell < prev_x) {
+		struct edge *pos = edge->prev;
+		pos->next = next;
+		next->prev = pos;
+		do {
+		    pos = pos->prev;
+		} while (edge->cell < pos->cell);
+		pos->next->prev = edge;
+		edge->next = pos->next;
+		edge->prev = pos;
+		pos->next = edge;
+	    } else
+		prev_x = edge->cell;
+	    active->min_height = -1;
+	} else {
+	    edge->prev->next = next;
+	    next->prev = edge->prev;
+	}
+
+	winding += edge->dir;
+	if ((winding & mask) == 0) {
+	    if (next->cell != xend) {
+		cell_list_add_subspan (coverages, xstart, xend);
+		xstart = INT_MIN;
+	    }
+	} else if (xstart == INT_MIN)
+	    xstart = xend;
+
+	edge = next;
+    }
+}
+
+inline static void dec (struct active_list *a, struct edge *e, int h)
+{
+    e->height_left -= h;
+    if (e->height_left == 0) {
+	e->prev->next = e->next;
+	e->next->prev = e->prev;
+	a->min_height = -1;
+    }
+}
+
+static void
+full_row (struct active_list *active,
+	  struct cell_list *coverages,
+	  unsigned int mask)
+{
+    struct edge *left = active->head.next;
+
+    while (&active->tail != left) {
+	struct edge *right;
+	int winding;
+
+	dec (active, left, GRID_Y);
+
+	winding = left->dir;
+	right = left->next;
+	do {
+	    dec (active, right, GRID_Y);
+
+	    winding += right->dir;
+	    if ((winding & mask) == 0 && right->next->cell != right->cell)
+		break;
+
+	    full_step (right);
+
+	    right = right->next;
+	} while (1);
+
+	cell_list_set_rewind (coverages);
+	cell_list_render_edge (coverages, left, +1);
+	cell_list_render_edge (coverages, right, -1);
+
+	left = right->next;
+    }
+}
+
+static void
+_glitter_scan_converter_init(glitter_scan_converter_t *converter, jmp_buf *jmp)
+{
+    polygon_init(converter->polygon, jmp);
+    active_list_init(converter->active);
+    cell_list_init(converter->coverages, jmp);
+    converter->xmin=0;
+    converter->ymin=0;
+    converter->xmax=0;
+    converter->ymax=0;
+}
+
+static void
+_glitter_scan_converter_fini(glitter_scan_converter_t *self)
+{
+    if (self->spans != self->spans_embedded)
+	free (self->spans);
+
+    polygon_fini(self->polygon);
+    cell_list_fini(self->coverages);
+
+    self->xmin=0;
+    self->ymin=0;
+    self->xmax=0;
+    self->ymax=0;
+}
+
+static grid_scaled_t
+int_to_grid_scaled(int i, int scale)
+{
+    /* Clamp to max/min representable scaled number. */
+    if (i >= 0) {
+	if (i >= INT_MAX/scale)
+	    i = INT_MAX/scale;
+    }
+    else {
+	if (i <= INT_MIN/scale)
+	    i = INT_MIN/scale;
+    }
+    return i*scale;
+}
+
+#define int_to_grid_scaled_x(x) int_to_grid_scaled((x), GRID_X)
+#define int_to_grid_scaled_y(x) int_to_grid_scaled((x), GRID_Y)
+
+I glitter_status_t
+glitter_scan_converter_reset(
+			     glitter_scan_converter_t *converter,
+			     int xmin, int ymin,
+			     int xmax, int ymax)
+{
+    glitter_status_t status;
+    int max_num_spans;
+
+    converter->xmin = 0; converter->xmax = 0;
+    converter->ymin = 0; converter->ymax = 0;
+
+    max_num_spans = xmax - xmin + 1;
+
+    if (max_num_spans > ARRAY_LENGTH(converter->spans_embedded)) {
+	converter->spans = _cairo_malloc_ab (max_num_spans,
+					     sizeof (cairo_half_open_span_t));
+	if (unlikely (converter->spans == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else
+	converter->spans = converter->spans_embedded;
+
+    xmin = int_to_grid_scaled_x(xmin);
+    ymin = int_to_grid_scaled_y(ymin);
+    xmax = int_to_grid_scaled_x(xmax);
+    ymax = int_to_grid_scaled_y(ymax);
+
+    active_list_reset(converter->active);
+    cell_list_reset(converter->coverages);
+    status = polygon_reset(converter->polygon, ymin, ymax);
+    if (status)
+	return status;
+
+    converter->xmin = xmin;
+    converter->xmax = xmax;
+    converter->ymin = ymin;
+    converter->ymax = ymax;
+    return GLITTER_STATUS_SUCCESS;
+}
+
+/* INPUT_TO_GRID_X/Y (in_coord, out_grid_scaled, grid_scale)
+ *   These macros convert an input coordinate in the client's
+ *   device space to the rasterisation grid.
+ */
+/* Gah.. this bit of ugly defines INPUT_TO_GRID_X/Y so as to use
+ * shifts if possible, and something saneish if not.
+ */
+#if !defined(INPUT_TO_GRID_Y) && defined(GRID_Y_BITS) && GRID_Y_BITS <= GLITTER_INPUT_BITS
+#  define INPUT_TO_GRID_Y(in, out) (out) = (in) >> (GLITTER_INPUT_BITS - GRID_Y_BITS)
+#else
+#  define INPUT_TO_GRID_Y(in, out) INPUT_TO_GRID_general(in, out, GRID_Y)
+#endif
+
+#if !defined(INPUT_TO_GRID_X) && defined(GRID_X_BITS) && GRID_X_BITS <= GLITTER_INPUT_BITS
+#  define INPUT_TO_GRID_X(in, out) (out) = (in) >> (GLITTER_INPUT_BITS - GRID_X_BITS)
+#else
+#  define INPUT_TO_GRID_X(in, out) INPUT_TO_GRID_general(in, out, GRID_X)
+#endif
+
+#define INPUT_TO_GRID_general(in, out, grid_scale) do {		\
+    long long tmp__ = (long long)(grid_scale) * (in);	\
+    tmp__ += 1 << (GLITTER_INPUT_BITS-1);			\
+    tmp__ >>= GLITTER_INPUT_BITS;				\
+    (out) = tmp__;						\
+} while (0)
+
+inline static void
+polygon_add_edge (struct polygon *polygon,
+		  const cairo_edge_t *edge)
+{
+    struct edge *e;
+    grid_scaled_y_t ytop, ybot;
+    const cairo_point_t *p1, *p2;
+
+    INPUT_TO_GRID_Y (edge->top, ytop);
+    if (ytop < polygon->ymin)
+	    ytop = polygon->ymin;
+
+    INPUT_TO_GRID_Y (edge->bottom, ybot);
+    if (ybot > polygon->ymax)
+	    ybot = polygon->ymax;
+
+    if (ybot <= ytop)
+	    return;
+
+    e = pool_alloc (polygon->edge_pool.base, sizeof (struct edge));
+
+    e->ytop = ytop;
+    e->height_left = ybot - ytop;
+    if (edge->line.p2.y > edge->line.p1.y) {
+	    e->dir = edge->dir;
+	    p1 = &edge->line.p1;
+	    p2 = &edge->line.p2;
+    } else {
+	    e->dir = -edge->dir;
+	    p1 = &edge->line.p2;
+	    p2 = &edge->line.p1;
+    }
+
+    if (p2->x == p1->x) {
+	e->cell = p1->x;
+	e->x.quo = p1->x;
+	e->x.rem = 0;
+	e->dxdy.quo = e->dxdy.rem = 0;
+	e->dxdy_full.quo = e->dxdy_full.rem = 0;
+	e->dy = 0;
+    } else {
+	int64_t Ex, Ey, tmp;
+
+	Ex = (int64_t)(p2->x - p1->x) * GRID_X;
+	Ey = (int64_t)(p2->y - p1->y) * GRID_Y * (2 << GLITTER_INPUT_BITS);
+
+	e->dxdy.quo = Ex * (2 << GLITTER_INPUT_BITS) / Ey;
+	e->dxdy.rem = Ex * (2 << GLITTER_INPUT_BITS) % Ey;
+
+	tmp = (int64_t)(2*ytop + 1) << GLITTER_INPUT_BITS;
+	tmp -= (int64_t)p1->y * GRID_Y * 2;
+	tmp *= Ex;
+	e->x.quo = tmp / Ey;
+	e->x.rem = tmp % Ey;
+
+#if GRID_X_BITS == GLITTER_INPUT_BITS
+	e->x.quo += p1->x;
+#else
+	tmp = (int64_t)p1->x * GRID_X;
+	e->x.quo += tmp >> GLITTER_INPUT_BITS;
+	e->x.rem += ((tmp & ((1 << GLITTER_INPUT_BITS) - 1)) * Ey) / (1 << GLITTER_INPUT_BITS);
+#endif
+
+	if (e->x.rem < 0) {
+		e->x.quo--;
+		e->x.rem += Ey;
+	} else  if (e->x.rem >= Ey) {
+		e->x.quo++;
+		e->x.rem -= Ey;
+	}
+
+	if (e->height_left >= GRID_Y) {
+	    tmp = Ex * (2 * GRID_Y << GLITTER_INPUT_BITS);
+	    e->dxdy_full.quo = tmp / Ey;
+	    e->dxdy_full.rem = tmp % Ey;
+	} else
+	    e->dxdy_full.quo = e->dxdy_full.rem = 0;
+
+	e->cell = e->x.quo + (e->x.rem >= Ey/2);
+	e->dy = Ey;
+    }
+
+    _polygon_insert_edge_into_its_y_bucket (polygon, e);
+}
+
+/* Add a new polygon edge from pixel (x1,y1) to (x2,y2) to the scan
+ * converter.  The coordinates represent pixel positions scaled by
+ * 2**GLITTER_PIXEL_BITS.  If this function fails then the scan
+ * converter should be reset or destroyed.  Dir must be +1 or -1,
+ * with the latter reversing the orientation of the edge. */
+I void
+glitter_scan_converter_add_edge (glitter_scan_converter_t *converter,
+				 const cairo_edge_t *edge)
+{
+    polygon_add_edge (converter->polygon, edge);
+}
+
+static void
+step_edges (struct active_list *active, int count)
+{
+    struct edge *edge;
+
+    count *= GRID_Y;
+    for (edge = active->head.next; edge != &active->tail; edge = edge->next) {
+	edge->height_left -= count;
+	if (! edge->height_left) {
+	    edge->prev->next = edge->next;
+	    edge->next->prev = edge->prev;
+	    active->min_height = -1;
+	}
+    }
+}
+
+static glitter_status_t
+blit_a8 (struct cell_list *cells,
+	 cairo_span_renderer_t *renderer,
+	 cairo_half_open_span_t *spans,
+	 int y, int height,
+	 int xmin, int xmax)
+{
+    struct cell *cell = cells->head.next;
+    int prev_x = xmin, last_x = -1;
+    int16_t cover = 0, last_cover = 0;
+    unsigned num_spans;
+
+    if (cell == &cells->tail)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Skip cells to the left of the clip region. */
+    while (cell->x < xmin) {
+	cover += cell->covered_height;
+	cell = cell->next;
+    }
+    cover *= GRID_X*2;
+
+    /* Form the spans from the coverages and areas. */
+    num_spans = 0;
+    for (; cell->x < xmax; cell = cell->next) {
+	int x = cell->x;
+	int16_t area;
+
+	if (x > prev_x && cover != last_cover) {
+	    spans[num_spans].x = prev_x;
+	    spans[num_spans].coverage = GRID_AREA_TO_ALPHA (cover);
+	    last_cover = cover;
+	    last_x = prev_x;
+	    ++num_spans;
+	}
+
+	cover += cell->covered_height*GRID_X*2;
+	area = cover - cell->uncovered_area;
+
+	if (area != last_cover) {
+	    spans[num_spans].x = x;
+	    spans[num_spans].coverage = GRID_AREA_TO_ALPHA (area);
+	    last_cover = area;
+	    last_x = x;
+	    ++num_spans;
+	}
+
+	prev_x = x+1;
+    }
+
+    if (prev_x <= xmax && cover != last_cover) {
+	spans[num_spans].x = prev_x;
+	spans[num_spans].coverage = GRID_AREA_TO_ALPHA (cover);
+	last_cover = cover;
+	last_x = prev_x;
+	++num_spans;
+    }
+
+    if (last_x < xmax && last_cover) {
+	spans[num_spans].x = xmax;
+	spans[num_spans].coverage = 0;
+	++num_spans;
+    }
+
+    /* Dump them into the renderer. */
+    return renderer->render_rows (renderer, y, height, spans, num_spans);
+}
+
+#define GRID_AREA_TO_A1(A)  ((GRID_AREA_TO_ALPHA (A) > 127) ? 255 : 0)
+static glitter_status_t
+blit_a1 (struct cell_list *cells,
+	 cairo_span_renderer_t *renderer,
+	 cairo_half_open_span_t *spans,
+	 int y, int height,
+	 int xmin, int xmax)
+{
+    struct cell *cell = cells->head.next;
+    int prev_x = xmin, last_x = -1;
+    int16_t cover = 0;
+    uint8_t coverage, last_cover = 0;
+    unsigned num_spans;
+
+    if (cell == &cells->tail)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Skip cells to the left of the clip region. */
+    while (cell->x < xmin) {
+	cover += cell->covered_height;
+	cell = cell->next;
+    }
+    cover *= GRID_X*2;
+
+    /* Form the spans from the coverages and areas. */
+    num_spans = 0;
+    for (; cell->x < xmax; cell = cell->next) {
+	int x = cell->x;
+	int16_t area;
+
+	coverage = GRID_AREA_TO_A1 (cover);
+	if (x > prev_x && coverage != last_cover) {
+	    last_x = spans[num_spans].x = prev_x;
+	    last_cover = spans[num_spans].coverage = coverage;
+	    ++num_spans;
+	}
+
+	cover += cell->covered_height*GRID_X*2;
+	area = cover - cell->uncovered_area;
+
+	coverage = GRID_AREA_TO_A1 (area);
+	if (coverage != last_cover) {
+	    last_x = spans[num_spans].x = x;
+	    last_cover = spans[num_spans].coverage = coverage;
+	    ++num_spans;
+	}
+
+	prev_x = x+1;
+    }
+
+    coverage = GRID_AREA_TO_A1 (cover);
+    if (prev_x <= xmax && coverage != last_cover) {
+	last_x = spans[num_spans].x = prev_x;
+	last_cover = spans[num_spans].coverage = coverage;
+	++num_spans;
+    }
+
+    if (last_x < xmax && last_cover) {
+	spans[num_spans].x = xmax;
+	spans[num_spans].coverage = 0;
+	++num_spans;
+    }
+    if (num_spans == 1)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Dump them into the renderer. */
+    return renderer->render_rows (renderer, y, height, spans, num_spans);
+}
+
+
+I void
+glitter_scan_converter_render(glitter_scan_converter_t *converter,
+			      unsigned int winding_mask,
+			      int antialias,
+			      cairo_span_renderer_t *renderer)
+{
+    int i, j;
+    int ymax_i = converter->ymax / GRID_Y;
+    int ymin_i = converter->ymin / GRID_Y;
+    int xmin_i, xmax_i;
+    int h = ymax_i - ymin_i;
+    struct polygon *polygon = converter->polygon;
+    struct cell_list *coverages = converter->coverages;
+    struct active_list *active = converter->active;
+    struct edge *buckets[GRID_Y] = { 0 };
+
+    xmin_i = converter->xmin / GRID_X;
+    xmax_i = converter->xmax / GRID_X;
+    if (xmin_i >= xmax_i)
+	return;
+
+    /* Render each pixel row. */
+    for (i = 0; i < h; i = j) {
+	int do_full_row = 0;
+
+	j = i + 1;
+
+	/* Determine if we can ignore this row or use the full pixel
+	 * stepper. */
+	if (polygon_fill_buckets (active,
+				  polygon->y_buckets[i],
+				  (i+ymin_i)*GRID_Y,
+				  buckets) == 0) {
+	    if (buckets[0]) {
+		active_list_merge_edges_from_bucket (active, buckets[0]);
+		buckets[0] = NULL;
+	    }
+
+	    if (active->head.next == &active->tail) {
+		active->min_height = INT_MAX;
+		active->is_vertical = 1;
+		for (; j < h && ! polygon->y_buckets[j]; j++)
+		    ;
+		continue;
+	    }
+
+	    do_full_row = can_do_full_row (active);
+	}
+
+	if (do_full_row) {
+	    /* Step by a full pixel row's worth. */
+	    full_row (active, coverages, winding_mask);
+
+	    if (active->is_vertical) {
+		while (j < h &&
+		       polygon->y_buckets[j] == NULL &&
+		       active->min_height >= 2*GRID_Y)
+		{
+		    active->min_height -= GRID_Y;
+		    j++;
+		}
+		if (j != i + 1)
+		    step_edges (active, j - (i + 1));
+	    }
+	} else {
+	    int sub;
+
+	    /* Subsample this row. */
+	    for (sub = 0; sub < GRID_Y; sub++) {
+		if (buckets[sub]) {
+		    active_list_merge_edges_from_bucket (active, buckets[sub]);
+		    buckets[sub] = NULL;
+		}
+		sub_row (active, coverages, winding_mask);
+	    }
+	}
+
+	if (antialias)
+	    blit_a8 (coverages, renderer, converter->spans,
+		     i+ymin_i, j-i, xmin_i, xmax_i);
+	else
+	    blit_a1 (coverages, renderer, converter->spans,
+		     i+ymin_i, j-i, xmin_i, xmax_i);
+	cell_list_reset (coverages);
+
+	active->min_height -= GRID_Y;
+    }
+}
+
+struct _cairo_tor_scan_converter {
+    cairo_scan_converter_t base;
+
+    glitter_scan_converter_t converter[1];
+    cairo_fill_rule_t fill_rule;
+    cairo_antialias_t antialias;
+
+    jmp_buf jmp;
+};
+
+typedef struct _cairo_tor_scan_converter cairo_tor_scan_converter_t;
+
+static void
+_cairo_tor_scan_converter_destroy (void *converter)
+{
+    cairo_tor_scan_converter_t *self = converter;
+    if (self == NULL) {
+	return;
+    }
+    _glitter_scan_converter_fini (self->converter);
+    free(self);
+}
+
+cairo_status_t
+_cairo_tor_scan_converter_add_polygon (void		*converter,
+				       const cairo_polygon_t *polygon)
+{
+    cairo_tor_scan_converter_t *self = converter;
+    int i;
+
+#if 0
+    FILE *file = fopen ("polygon.txt", "w");
+    _cairo_debug_print_polygon (file, polygon);
+    fclose (file);
+#endif
+
+    for (i = 0; i < polygon->num_edges; i++)
+	 glitter_scan_converter_add_edge (self->converter, &polygon->edges[i]);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_tor_scan_converter_generate (void			*converter,
+				    cairo_span_renderer_t	*renderer)
+{
+    cairo_tor_scan_converter_t *self = converter;
+    cairo_status_t status;
+
+    if ((status = setjmp (self->jmp)))
+	return _cairo_scan_converter_set_error (self, _cairo_error (status));
+
+    glitter_scan_converter_render (self->converter,
+				   self->fill_rule == CAIRO_FILL_RULE_WINDING ? ~0 : 1,
+				   self->antialias != CAIRO_ANTIALIAS_NONE,
+				   renderer);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_scan_converter_t *
+_cairo_tor_scan_converter_create (int			xmin,
+				  int			ymin,
+				  int			xmax,
+				  int			ymax,
+				  cairo_fill_rule_t	fill_rule,
+				  cairo_antialias_t	antialias)
+{
+    cairo_tor_scan_converter_t *self;
+    cairo_status_t status;
+
+    self = _cairo_malloc (sizeof(struct _cairo_tor_scan_converter));
+    if (unlikely (self == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto bail_nomem;
+    }
+
+    self->base.destroy = _cairo_tor_scan_converter_destroy;
+    self->base.generate = _cairo_tor_scan_converter_generate;
+
+    _glitter_scan_converter_init (self->converter, &self->jmp);
+    status = glitter_scan_converter_reset (self->converter,
+					   xmin, ymin, xmax, ymax);
+    if (unlikely (status))
+	goto bail;
+
+    self->fill_rule = fill_rule;
+    self->antialias = antialias;
+
+    return &self->base;
+
+ bail:
+    self->base.destroy(&self->base);
+ bail_nomem:
+    return _cairo_scan_converter_create_in_error (status);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-tor22-scan-converter.c b/libs/cairo-1.16.0/src/cairo-tor22-scan-converter.c
new file mode 100644
index 0000000..bf44742
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tor22-scan-converter.c
@@ -0,0 +1,1709 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* glitter-paths - polygon scan converter
+ *
+ * Copyright (c) 2008  M Joonas Pihlaja
+ * Copyright (c) 2007  David Turner
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+/* This is the Glitter paths scan converter incorporated into cairo.
+ * The source is from commit 734c53237a867a773640bd5b64816249fa1730f8
+ * of
+ *
+ *   https://gitweb.freedesktop.org/?p=users/joonas/glitter-paths
+ */
+/* Glitter-paths is a stand alone polygon rasteriser derived from
+ * David Turner's reimplementation of Tor Anderssons's 15x17
+ * supersampling rasteriser from the Apparition graphics library.  The
+ * main new feature here is cheaply choosing per-scan line between
+ * doing fully analytical coverage computation for an entire row at a
+ * time vs. using a supersampling approach.
+ *
+ * David Turner's code can be found at
+ *
+ *   http://david.freetype.org/rasterizer-shootout/raster-comparison-20070813.tar.bz2
+ *
+ * In particular this file incorporates large parts of ftgrays_tor10.h
+ * from raster-comparison-20070813.tar.bz2
+ */
+/* Overview
+ *
+ * A scan converter's basic purpose to take polygon edges and convert
+ * them into an RLE compressed A8 mask.  This one works in two phases:
+ * gathering edges and generating spans.
+ *
+ * 1) As the user feeds the scan converter edges they are vertically
+ * clipped and bucketted into a _polygon_ data structure.  The edges
+ * are also snapped from the user's coordinates to the subpixel grid
+ * coordinates used during scan conversion.
+ *
+ *     user
+ *      |
+ *      | edges
+ *      V
+ *    polygon buckets
+ *
+ * 2) Generating spans works by performing a vertical sweep of pixel
+ * rows from top to bottom and maintaining an _active_list_ of edges
+ * that intersect the row.  From the active list the fill rule
+ * determines which edges are the left and right edges of the start of
+ * each span, and their contribution is then accumulated into a pixel
+ * coverage list (_cell_list_) as coverage deltas.  Once the coverage
+ * deltas of all edges are known we can form spans of constant pixel
+ * coverage by summing the deltas during a traversal of the cell list.
+ * At the end of a pixel row the cell list is sent to a coverage
+ * blitter for rendering to some target surface.
+ *
+ * The pixel coverages are computed by either supersampling the row
+ * and box filtering a mono rasterisation, or by computing the exact
+ * coverages of edges in the active list.  The supersampling method is
+ * used whenever some edge starts or stops within the row or there are
+ * edge intersections in the row.
+ *
+ *   polygon bucket for       \
+ *   current pixel row        |
+ *      |                     |
+ *      | activate new edges  |  Repeat GRID_Y times if we
+ *      V                     \  are supersampling this row,
+ *   active list              /  or just once if we're computing
+ *      |                     |  analytical coverage.
+ *      | coverage deltas     |
+ *      V                     |
+ *   pixel coverage list     /
+ *      |
+ *      V
+ *   coverage blitter
+ */
+#include "cairoint.h"
+#include "cairo-spans-private.h"
+#include "cairo-error-private.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <setjmp.h>
+
+/*-------------------------------------------------------------------------
+ * cairo specific config
+ */
+#define I static
+
+/* Prefer cairo's status type. */
+#define GLITTER_HAVE_STATUS_T 1
+#define GLITTER_STATUS_SUCCESS CAIRO_STATUS_SUCCESS
+#define GLITTER_STATUS_NO_MEMORY CAIRO_STATUS_NO_MEMORY
+typedef cairo_status_t glitter_status_t;
+
+/* The input coordinate scale and the rasterisation grid scales. */
+#define GLITTER_INPUT_BITS CAIRO_FIXED_FRAC_BITS
+//#define GRID_X_BITS CAIRO_FIXED_FRAC_BITS
+//#define GRID_Y 15
+#define GRID_X_BITS 2
+#define GRID_Y_BITS 2
+
+/* Set glitter up to use a cairo span renderer to do the coverage
+ * blitting. */
+struct pool;
+struct cell_list;
+
+/*-------------------------------------------------------------------------
+ * glitter-paths.h
+ */
+
+/* "Input scaled" numbers are fixed precision reals with multiplier
+ * 2**GLITTER_INPUT_BITS.  Input coordinates are given to glitter as
+ * pixel scaled numbers.  These get converted to the internal grid
+ * scaled numbers as soon as possible. Internal overflow is possible
+ * if GRID_X/Y inside glitter-paths.c is larger than
+ * 1<<GLITTER_INPUT_BITS. */
+#ifndef GLITTER_INPUT_BITS
+#  define GLITTER_INPUT_BITS 8
+#endif
+#define GLITTER_INPUT_SCALE (1<<GLITTER_INPUT_BITS)
+typedef int glitter_input_scaled_t;
+
+#if !GLITTER_HAVE_STATUS_T
+typedef enum {
+    GLITTER_STATUS_SUCCESS = 0,
+    GLITTER_STATUS_NO_MEMORY
+} glitter_status_t;
+#endif
+
+#ifndef I
+# define I /*static*/
+#endif
+
+/* Opaque type for scan converting. */
+typedef struct glitter_scan_converter glitter_scan_converter_t;
+
+/* Reset a scan converter to accept polygon edges and set the clip box
+ * in pixels.  Allocates O(ymax-ymin) bytes of memory.	The clip box
+ * is set to integer pixel coordinates xmin <= x < xmax, ymin <= y <
+ * ymax. */
+I glitter_status_t
+glitter_scan_converter_reset(
+    glitter_scan_converter_t *converter,
+    int xmin, int ymin,
+    int xmax, int ymax);
+
+/* Render the polygon in the scan converter to the given A8 format
+ * image raster.  Only the pixels accessible as pixels[y*stride+x] for
+ * x,y inside the clip box are written to, where xmin <= x < xmax,
+ * ymin <= y < ymax.  The image is assumed to be clear on input.
+ *
+ * If nonzero_fill is true then the interior of the polygon is
+ * computed with the non-zero fill rule.  Otherwise the even-odd fill
+ * rule is used.
+ *
+ * The scan converter must be reset or destroyed after this call. */
+
+/*-------------------------------------------------------------------------
+ * glitter-paths.c: Implementation internal types
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+/* All polygon coordinates are snapped onto a subsample grid. "Grid
+ * scaled" numbers are fixed precision reals with multiplier GRID_X or
+ * GRID_Y. */
+typedef int grid_scaled_t;
+typedef int grid_scaled_x_t;
+typedef int grid_scaled_y_t;
+
+/* Default x/y scale factors.
+ *  You can either define GRID_X/Y_BITS to get a power-of-two scale
+ *  or define GRID_X/Y separately. */
+#if !defined(GRID_X) && !defined(GRID_X_BITS)
+#  define GRID_X_BITS 8
+#endif
+#if !defined(GRID_Y) && !defined(GRID_Y_BITS)
+#  define GRID_Y 15
+#endif
+
+/* Use GRID_X/Y_BITS to define GRID_X/Y if they're available. */
+#ifdef GRID_X_BITS
+#  define GRID_X (1 << GRID_X_BITS)
+#endif
+#ifdef GRID_Y_BITS
+#  define GRID_Y (1 << GRID_Y_BITS)
+#endif
+
+/* The GRID_X_TO_INT_FRAC macro splits a grid scaled coordinate into
+ * integer and fractional parts. The integer part is floored. */
+#if defined(GRID_X_TO_INT_FRAC)
+  /* do nothing */
+#elif defined(GRID_X_BITS)
+#  define GRID_X_TO_INT_FRAC(x, i, f) \
+	_GRID_TO_INT_FRAC_shift(x, i, f, GRID_X_BITS)
+#else
+#  define GRID_X_TO_INT_FRAC(x, i, f) \
+	_GRID_TO_INT_FRAC_general(x, i, f, GRID_X)
+#endif
+
+#define _GRID_TO_INT_FRAC_general(t, i, f, m) do {	\
+    (i) = (t) / (m);					\
+    (f) = (t) % (m);					\
+    if ((f) < 0) {					\
+	--(i);						\
+	(f) += (m);					\
+    }							\
+} while (0)
+
+#define _GRID_TO_INT_FRAC_shift(t, i, f, b) do {	\
+    (f) = (t) & ((1 << (b)) - 1);			\
+    (i) = (t) >> (b);					\
+} while (0)
+
+/* A grid area is a real in [0,1] scaled by 2*GRID_X*GRID_Y.  We want
+ * to be able to represent exactly areas of subpixel trapezoids whose
+ * vertices are given in grid scaled coordinates.  The scale factor
+ * comes from needing to accurately represent the area 0.5*dx*dy of a
+ * triangle with base dx and height dy in grid scaled numbers. */
+#define GRID_XY (2*GRID_X*GRID_Y) /* Unit area on the grid. */
+
+/* GRID_AREA_TO_ALPHA(area): map [0,GRID_XY] to [0,255]. */
+#if GRID_XY == 510
+#  define GRID_AREA_TO_ALPHA(c)	  (((c)+1) >> 1)
+#elif GRID_XY == 255
+#  define  GRID_AREA_TO_ALPHA(c)  (c)
+#elif GRID_XY == 64
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 2) | -(((c) & 0x40) >> 6))
+#elif GRID_XY == 32
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 3) | -(((c) & 0x20) >> 5))
+#elif GRID_XY == 128
+#  define  GRID_AREA_TO_ALPHA(c)  ((((c) << 1) | -((c) >> 7)) & 255)
+#elif GRID_XY == 256
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) | -((c) >> 8)) & 255)
+#elif GRID_XY == 15
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) << 4) + (c))
+#elif GRID_XY == 2*256*15
+#  define  GRID_AREA_TO_ALPHA(c)  (((c) + ((c)<<4) + 256) >> 9)
+#else
+#  define  GRID_AREA_TO_ALPHA(c)  (((c)*255 + GRID_XY/2) / GRID_XY)
+#endif
+
+#define UNROLL3(x) x x x
+
+struct quorem {
+    int32_t quo;
+    int32_t rem;
+};
+
+/* Header for a chunk of memory in a memory pool. */
+struct _pool_chunk {
+    /* # bytes used in this chunk. */
+    size_t size;
+
+    /* # bytes total in this chunk */
+    size_t capacity;
+
+    /* Pointer to the previous chunk or %NULL if this is the sentinel
+     * chunk in the pool header. */
+    struct _pool_chunk *prev_chunk;
+
+    /* Actual data starts here.	 Well aligned for pointers. */
+};
+
+/* A memory pool.  This is supposed to be embedded on the stack or
+ * within some other structure.	 It may optionally be followed by an
+ * embedded array from which requests are fulfilled until
+ * malloc needs to be called to allocate a first real chunk. */
+struct pool {
+    /* Chunk we're allocating from. */
+    struct _pool_chunk *current;
+
+    jmp_buf *jmp;
+
+    /* Free list of previously allocated chunks.  All have >= default
+     * capacity. */
+    struct _pool_chunk *first_free;
+
+    /* The default capacity of a chunk. */
+    size_t default_capacity;
+
+    /* Header for the sentinel chunk.  Directly following the pool
+     * struct should be some space for embedded elements from which
+     * the sentinel chunk allocates from. */
+    struct _pool_chunk sentinel[1];
+};
+
+/* A polygon edge. */
+struct edge {
+    /* Next in y-bucket or active list. */
+    struct edge *next, *prev;
+
+    /* Number of subsample rows remaining to scan convert of this
+     * edge. */
+    grid_scaled_y_t height_left;
+
+    /* Original sign of the edge: +1 for downwards, -1 for upwards
+     * edges.  */
+    int dir;
+    int vertical;
+
+    /* Current x coordinate while the edge is on the active
+     * list. Initialised to the x coordinate of the top of the
+     * edge. The quotient is in grid_scaled_x_t units and the
+     * remainder is mod dy in grid_scaled_y_t units.*/
+    struct quorem x;
+
+    /* Advance of the current x when moving down a subsample line. */
+    struct quorem dxdy;
+
+    /* The clipped y of the top of the edge. */
+    grid_scaled_y_t ytop;
+
+    /* y2-y1 after orienting the edge downwards.  */
+    grid_scaled_y_t dy;
+};
+
+#define EDGE_Y_BUCKET_INDEX(y, ymin) (((y) - (ymin))/GRID_Y)
+
+/* A collection of sorted and vertically clipped edges of the polygon.
+ * Edges are moved from the polygon to an active list while scan
+ * converting. */
+struct polygon {
+    /* The vertical clip extents. */
+    grid_scaled_y_t ymin, ymax;
+
+    /* Array of edges all starting in the same bucket.	An edge is put
+     * into bucket EDGE_BUCKET_INDEX(edge->ytop, polygon->ymin) when
+     * it is added to the polygon. */
+    struct edge **y_buckets;
+    struct edge *y_buckets_embedded[64];
+
+    struct {
+	struct pool base[1];
+	struct edge embedded[32];
+    } edge_pool;
+};
+
+/* A cell records the effect on pixel coverage of polygon edges
+ * passing through a pixel.  It contains two accumulators of pixel
+ * coverage.
+ *
+ * Consider the effects of a polygon edge on the coverage of a pixel
+ * it intersects and that of the following one.  The coverage of the
+ * following pixel is the height of the edge multiplied by the width
+ * of the pixel, and the coverage of the pixel itself is the area of
+ * the trapezoid formed by the edge and the right side of the pixel.
+ *
+ * +-----------------------+-----------------------+
+ * |                       |                       |
+ * |                       |                       |
+ * |_______________________|_______________________|
+ * |   \...................|.......................|\
+ * |    \..................|.......................| |
+ * |     \.................|.......................| |
+ * |      \....covered.....|.......................| |
+ * |       \....area.......|.......................| } covered height
+ * |        \..............|.......................| |
+ * |uncovered\.............|.......................| |
+ * |  area    \............|.......................| |
+ * |___________\...........|.......................|/
+ * |                       |                       |
+ * |                       |                       |
+ * |                       |                       |
+ * +-----------------------+-----------------------+
+ *
+ * Since the coverage of the following pixel will always be a multiple
+ * of the width of the pixel, we can store the height of the covered
+ * area instead.  The coverage of the pixel itself is the total
+ * coverage minus the area of the uncovered area to the left of the
+ * edge.  As it's faster to compute the uncovered area we only store
+ * that and subtract it from the total coverage later when forming
+ * spans to blit.
+ *
+ * The heights and areas are signed, with left edges of the polygon
+ * having positive sign and right edges having negative sign.  When
+ * two edges intersect they swap their left/rightness so their
+ * contribution above and below the intersection point must be
+ * computed separately. */
+struct cell {
+    struct cell		*next;
+    int			 x;
+    int16_t		 uncovered_area;
+    int16_t		 covered_height;
+};
+
+/* A cell list represents the scan line sparsely as cells ordered by
+ * ascending x.  It is geared towards scanning the cells in order
+ * using an internal cursor. */
+struct cell_list {
+    /* Sentinel nodes */
+    struct cell head, tail;
+
+    /* Cursor state for iterating through the cell list. */
+    struct cell *cursor, *rewind;
+
+    /* Cells in the cell list are owned by the cell list and are
+     * allocated from this pool.  */
+    struct {
+	struct pool base[1];
+	struct cell embedded[32];
+    } cell_pool;
+};
+
+struct cell_pair {
+    struct cell *cell1;
+    struct cell *cell2;
+};
+
+/* The active list contains edges in the current scan line ordered by
+ * the x-coordinate of the intercept of the edge and the scan line. */
+struct active_list {
+    /* Leftmost edge on the current scan line. */
+    struct edge head, tail;
+
+    /* A lower bound on the height of the active edges is used to
+     * estimate how soon some active edge ends.	 We can't advance the
+     * scan conversion by a full pixel row if an edge ends somewhere
+     * within it. */
+    grid_scaled_y_t min_height;
+    int is_vertical;
+};
+
+struct glitter_scan_converter {
+    struct polygon	polygon[1];
+    struct active_list	active[1];
+    struct cell_list	coverages[1];
+
+    cairo_half_open_span_t *spans;
+    cairo_half_open_span_t spans_embedded[64];
+
+    /* Clip box. */
+    grid_scaled_x_t xmin, xmax;
+    grid_scaled_y_t ymin, ymax;
+};
+
+/* Compute the floored division a/b. Assumes / and % perform symmetric
+ * division. */
+inline static struct quorem
+floored_divrem(int a, int b)
+{
+    struct quorem qr;
+    qr.quo = a/b;
+    qr.rem = a%b;
+    if ((a^b)<0 && qr.rem) {
+	qr.quo -= 1;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+/* Compute the floored division (x*a)/b. Assumes / and % perform symmetric
+ * division. */
+static struct quorem
+floored_muldivrem(int x, int a, int b)
+{
+    struct quorem qr;
+    long long xa = (long long)x*a;
+    qr.quo = xa/b;
+    qr.rem = xa%b;
+    if ((xa>=0) != (b>=0) && qr.rem) {
+	qr.quo -= 1;
+	qr.rem += b;
+    }
+    return qr;
+}
+
+static struct _pool_chunk *
+_pool_chunk_init(
+    struct _pool_chunk *p,
+    struct _pool_chunk *prev_chunk,
+    size_t capacity)
+{
+    p->prev_chunk = prev_chunk;
+    p->size = 0;
+    p->capacity = capacity;
+    return p;
+}
+
+static struct _pool_chunk *
+_pool_chunk_create(struct pool *pool, size_t size)
+{
+    struct _pool_chunk *p;
+
+    p = _cairo_malloc (size + sizeof(struct _pool_chunk));
+    if (unlikely (NULL == p))
+	longjmp (*pool->jmp, _cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    return _pool_chunk_init(p, pool->current, size);
+}
+
+static void
+pool_init(struct pool *pool,
+	  jmp_buf *jmp,
+	  size_t default_capacity,
+	  size_t embedded_capacity)
+{
+    pool->jmp = jmp;
+    pool->current = pool->sentinel;
+    pool->first_free = NULL;
+    pool->default_capacity = default_capacity;
+    _pool_chunk_init(pool->sentinel, NULL, embedded_capacity);
+}
+
+static void
+pool_fini(struct pool *pool)
+{
+    struct _pool_chunk *p = pool->current;
+    do {
+	while (NULL != p) {
+	    struct _pool_chunk *prev = p->prev_chunk;
+	    if (p != pool->sentinel)
+		free(p);
+	    p = prev;
+	}
+	p = pool->first_free;
+	pool->first_free = NULL;
+    } while (NULL != p);
+}
+
+/* Satisfy an allocation by first allocating a new large enough chunk
+ * and adding it to the head of the pool's chunk list. This function
+ * is called as a fallback if pool_alloc() couldn't do a quick
+ * allocation from the current chunk in the pool. */
+static void *
+_pool_alloc_from_new_chunk(
+    struct pool *pool,
+    size_t size)
+{
+    struct _pool_chunk *chunk;
+    void *obj;
+    size_t capacity;
+
+    /* If the allocation is smaller than the default chunk size then
+     * try getting a chunk off the free list.  Force alloc of a new
+     * chunk for large requests. */
+    capacity = size;
+    chunk = NULL;
+    if (size < pool->default_capacity) {
+	capacity = pool->default_capacity;
+	chunk = pool->first_free;
+	if (chunk) {
+	    pool->first_free = chunk->prev_chunk;
+	    _pool_chunk_init(chunk, pool->current, chunk->capacity);
+	}
+    }
+
+    if (NULL == chunk)
+	chunk = _pool_chunk_create (pool, capacity);
+    pool->current = chunk;
+
+    obj = ((unsigned char*)chunk + sizeof(*chunk) + chunk->size);
+    chunk->size += size;
+    return obj;
+}
+
+/* Allocate size bytes from the pool.  The first allocated address
+ * returned from a pool is aligned to sizeof(void*).  Subsequent
+ * addresses will maintain alignment as long as multiples of void* are
+ * allocated.  Returns the address of a new memory area or %NULL on
+ * allocation failures.	 The pool retains ownership of the returned
+ * memory. */
+inline static void *
+pool_alloc (struct pool *pool, size_t size)
+{
+    struct _pool_chunk *chunk = pool->current;
+
+    if (size <= chunk->capacity - chunk->size) {
+	void *obj = ((unsigned char*)chunk + sizeof(*chunk) + chunk->size);
+	chunk->size += size;
+	return obj;
+    } else {
+	return _pool_alloc_from_new_chunk(pool, size);
+    }
+}
+
+/* Relinquish all pool_alloced memory back to the pool. */
+static void
+pool_reset (struct pool *pool)
+{
+    /* Transfer all used chunks to the chunk free list. */
+    struct _pool_chunk *chunk = pool->current;
+    if (chunk != pool->sentinel) {
+	while (chunk->prev_chunk != pool->sentinel) {
+	    chunk = chunk->prev_chunk;
+	}
+	chunk->prev_chunk = pool->first_free;
+	pool->first_free = pool->current;
+    }
+    /* Reset the sentinel as the current chunk. */
+    pool->current = pool->sentinel;
+    pool->sentinel->size = 0;
+}
+
+/* Rewinds the cell list's cursor to the beginning.  After rewinding
+ * we're good to cell_list_find() the cell any x coordinate. */
+inline static void
+cell_list_rewind (struct cell_list *cells)
+{
+    cells->cursor = &cells->head;
+}
+
+inline static void
+cell_list_maybe_rewind (struct cell_list *cells, int x)
+{
+    if (x < cells->cursor->x) {
+	cells->cursor = cells->rewind;
+	if (x < cells->cursor->x)
+	    cells->cursor = &cells->head;
+    }
+}
+
+inline static void
+cell_list_set_rewind (struct cell_list *cells)
+{
+    cells->rewind = cells->cursor;
+}
+
+static void
+cell_list_init(struct cell_list *cells, jmp_buf *jmp)
+{
+    pool_init(cells->cell_pool.base, jmp,
+	      256*sizeof(struct cell),
+	      sizeof(cells->cell_pool.embedded));
+    cells->tail.next = NULL;
+    cells->tail.x = INT_MAX;
+    cells->head.x = INT_MIN;
+    cells->head.next = &cells->tail;
+    cell_list_rewind (cells);
+}
+
+static void
+cell_list_fini(struct cell_list *cells)
+{
+    pool_fini (cells->cell_pool.base);
+}
+
+/* Empty the cell list.  This is called at the start of every pixel
+ * row. */
+inline static void
+cell_list_reset (struct cell_list *cells)
+{
+    cell_list_rewind (cells);
+    cells->head.next = &cells->tail;
+    pool_reset (cells->cell_pool.base);
+}
+
+inline static struct cell *
+cell_list_alloc (struct cell_list *cells,
+		 struct cell *tail,
+		 int x)
+{
+    struct cell *cell;
+
+    cell = pool_alloc (cells->cell_pool.base, sizeof (struct cell));
+    cell->next = tail->next;
+    tail->next = cell;
+    cell->x = x;
+    *(uint32_t *)&cell->uncovered_area = 0;
+
+    return cell;
+}
+
+/* Find a cell at the given x-coordinate.  Returns %NULL if a new cell
+ * needed to be allocated but couldn't be.  Cells must be found with
+ * non-decreasing x-coordinate until the cell list is rewound using
+ * cell_list_rewind(). Ownership of the returned cell is retained by
+ * the cell list. */
+inline static struct cell *
+cell_list_find (struct cell_list *cells, int x)
+{
+    struct cell *tail = cells->cursor;
+
+    if (tail->x == x)
+	return tail;
+
+    while (1) {
+	UNROLL3({
+		if (tail->next->x > x)
+			break;
+		tail = tail->next;
+	});
+    }
+
+    if (tail->x != x)
+	tail = cell_list_alloc (cells, tail, x);
+    return cells->cursor = tail;
+
+}
+
+/* Find two cells at x1 and x2.	 This is exactly equivalent
+ * to
+ *
+ *   pair.cell1 = cell_list_find(cells, x1);
+ *   pair.cell2 = cell_list_find(cells, x2);
+ *
+ * except with less function call overhead. */
+inline static struct cell_pair
+cell_list_find_pair(struct cell_list *cells, int x1, int x2)
+{
+    struct cell_pair pair;
+
+    pair.cell1 = cells->cursor;
+    while (1) {
+	UNROLL3({
+		if (pair.cell1->next->x > x1)
+			break;
+		pair.cell1 = pair.cell1->next;
+	});
+    }
+    if (pair.cell1->x != x1)
+	pair.cell1 = cell_list_alloc (cells, pair.cell1, x1);
+
+    pair.cell2 = pair.cell1;
+    while (1) {
+	UNROLL3({
+		if (pair.cell2->next->x > x2)
+			break;
+		pair.cell2 = pair.cell2->next;
+	});
+    }
+    if (pair.cell2->x != x2)
+	pair.cell2 = cell_list_alloc (cells, pair.cell2, x2);
+
+    cells->cursor = pair.cell2;
+    return pair;
+}
+
+/* Add a subpixel span covering [x1, x2) to the coverage cells. */
+inline static void
+cell_list_add_subspan(struct cell_list *cells,
+		      grid_scaled_x_t x1,
+		      grid_scaled_x_t x2)
+{
+    int ix1, fx1;
+    int ix2, fx2;
+
+    if (x1 == x2)
+	return;
+
+    GRID_X_TO_INT_FRAC(x1, ix1, fx1);
+    GRID_X_TO_INT_FRAC(x2, ix2, fx2);
+
+    if (ix1 != ix2) {
+	struct cell_pair p;
+	p = cell_list_find_pair(cells, ix1, ix2);
+	p.cell1->uncovered_area += 2*fx1;
+	++p.cell1->covered_height;
+	p.cell2->uncovered_area -= 2*fx2;
+	--p.cell2->covered_height;
+    } else {
+	struct cell *cell = cell_list_find(cells, ix1);
+	cell->uncovered_area += 2*(fx1-fx2);
+    }
+}
+
+/* Adds the analytical coverage of an edge crossing the current pixel
+ * row to the coverage cells and advances the edge's x position to the
+ * following row.
+ *
+ * This function is only called when we know that during this pixel row:
+ *
+ * 1) The relative order of all edges on the active list doesn't
+ * change.  In particular, no edges intersect within this row to pixel
+ * precision.
+ *
+ * 2) No new edges start in this row.
+ *
+ * 3) No existing edges end mid-row.
+ *
+ * This function depends on being called with all edges from the
+ * active list in the order they appear on the list (i.e. with
+ * non-decreasing x-coordinate.)  */
+static void
+cell_list_render_edge(struct cell_list *cells,
+		      struct edge *edge,
+		      int sign)
+{
+    grid_scaled_x_t fx;
+    struct cell *cell;
+    int ix;
+
+    GRID_X_TO_INT_FRAC(edge->x.quo, ix, fx);
+
+    /* We always know that ix1 is >= the cell list cursor in this
+     * case due to the no-intersections precondition.  */
+    cell = cell_list_find(cells, ix);
+    cell->covered_height += sign*GRID_Y;
+    cell->uncovered_area += sign*2*fx*GRID_Y;
+}
+
+static void
+polygon_init (struct polygon *polygon, jmp_buf *jmp)
+{
+    polygon->ymin = polygon->ymax = 0;
+    polygon->y_buckets = polygon->y_buckets_embedded;
+    pool_init (polygon->edge_pool.base, jmp,
+	       8192 - sizeof (struct _pool_chunk),
+	       sizeof (polygon->edge_pool.embedded));
+}
+
+static void
+polygon_fini (struct polygon *polygon)
+{
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    pool_fini (polygon->edge_pool.base);
+}
+
+/* Empties the polygon of all edges. The polygon is then prepared to
+ * receive new edges and clip them to the vertical range
+ * [ymin,ymax). */
+static glitter_status_t
+polygon_reset (struct polygon *polygon,
+	       grid_scaled_y_t ymin,
+	       grid_scaled_y_t ymax)
+{
+    unsigned h = ymax - ymin;
+    unsigned num_buckets = EDGE_Y_BUCKET_INDEX(ymax + GRID_Y-1, ymin);
+
+    pool_reset(polygon->edge_pool.base);
+
+    if (unlikely (h > 0x7FFFFFFFU - GRID_Y))
+	goto bail_no_mem; /* even if you could, you wouldn't want to. */
+
+    if (polygon->y_buckets != polygon->y_buckets_embedded)
+	free (polygon->y_buckets);
+
+    polygon->y_buckets =  polygon->y_buckets_embedded;
+    if (num_buckets > ARRAY_LENGTH (polygon->y_buckets_embedded)) {
+	polygon->y_buckets = _cairo_malloc_ab (num_buckets,
+					       sizeof (struct edge *));
+	if (unlikely (NULL == polygon->y_buckets))
+	    goto bail_no_mem;
+    }
+    memset (polygon->y_buckets, 0, num_buckets * sizeof (struct edge *));
+
+    polygon->ymin = ymin;
+    polygon->ymax = ymax;
+    return GLITTER_STATUS_SUCCESS;
+
+bail_no_mem:
+    polygon->ymin = 0;
+    polygon->ymax = 0;
+    return GLITTER_STATUS_NO_MEMORY;
+}
+
+static void
+_polygon_insert_edge_into_its_y_bucket(struct polygon *polygon,
+				       struct edge *e)
+{
+    unsigned ix = EDGE_Y_BUCKET_INDEX(e->ytop, polygon->ymin);
+    struct edge **ptail = &polygon->y_buckets[ix];
+    e->next = *ptail;
+    *ptail = e;
+}
+
+inline static void
+polygon_add_edge (struct polygon *polygon,
+		  const cairo_edge_t *edge)
+{
+    struct edge *e;
+    grid_scaled_x_t dx;
+    grid_scaled_y_t dy;
+    grid_scaled_y_t ytop, ybot;
+    grid_scaled_y_t ymin = polygon->ymin;
+    grid_scaled_y_t ymax = polygon->ymax;
+
+    if (unlikely (edge->top >= ymax || edge->bottom <= ymin))
+	return;
+
+    e = pool_alloc (polygon->edge_pool.base, sizeof (struct edge));
+
+    dx = edge->line.p2.x - edge->line.p1.x;
+    dy = edge->line.p2.y - edge->line.p1.y;
+    e->dy = dy;
+    e->dir = edge->dir;
+
+    ytop = edge->top >= ymin ? edge->top : ymin;
+    ybot = edge->bottom <= ymax ? edge->bottom : ymax;
+    e->ytop = ytop;
+    e->height_left = ybot - ytop;
+
+    if (dx == 0) {
+	e->vertical = TRUE;
+	e->x.quo = edge->line.p1.x;
+	e->x.rem = 0;
+	e->dxdy.quo = 0;
+	e->dxdy.rem = 0;
+    } else {
+	e->vertical = FALSE;
+	e->dxdy = floored_divrem (dx, dy);
+	if (ytop == edge->line.p1.y) {
+	    e->x.quo = edge->line.p1.x;
+	    e->x.rem = 0;
+	} else {
+	    e->x = floored_muldivrem (ytop - edge->line.p1.y, dx, dy);
+	    e->x.quo += edge->line.p1.x;
+	}
+    }
+
+    _polygon_insert_edge_into_its_y_bucket (polygon, e);
+
+    e->x.rem -= dy;		/* Bias the remainder for faster
+				 * edge advancement. */
+}
+
+static void
+active_list_reset (struct active_list *active)
+{
+    active->head.vertical = 1;
+    active->head.height_left = INT_MAX;
+    active->head.x.quo = INT_MIN;
+    active->head.prev = NULL;
+    active->head.next = &active->tail;
+    active->tail.prev = &active->head;
+    active->tail.next = NULL;
+    active->tail.x.quo = INT_MAX;
+    active->tail.height_left = INT_MAX;
+    active->tail.vertical = 1;
+    active->min_height = 0;
+    active->is_vertical = 1;
+}
+
+static void
+active_list_init(struct active_list *active)
+{
+    active_list_reset(active);
+}
+
+/*
+ * Merge two sorted edge lists.
+ * Input:
+ *  - head_a: The head of the first list.
+ *  - head_b: The head of the second list; head_b cannot be NULL.
+ * Output:
+ * Returns the head of the merged list.
+ *
+ * Implementation notes:
+ * To make it fast (in particular, to reduce to an insertion sort whenever
+ * one of the two input lists only has a single element) we iterate through
+ * a list until its head becomes greater than the head of the other list,
+ * then we switch their roles. As soon as one of the two lists is empty, we
+ * just attach the other one to the current list and exit.
+ * Writes to memory are only needed to "switch" lists (as it also requires
+ * attaching to the output list the list which we will be iterating next) and
+ * to attach the last non-empty list.
+ */
+static struct edge *
+merge_sorted_edges (struct edge *head_a, struct edge *head_b)
+{
+    struct edge *head, **next, *prev;
+    int32_t x;
+
+    prev = head_a->prev;
+    next = &head;
+    if (head_a->x.quo <= head_b->x.quo) {
+	head = head_a;
+    } else {
+	head = head_b;
+	head_b->prev = prev;
+	goto start_with_b;
+    }
+
+    do {
+	x = head_b->x.quo;
+	while (head_a != NULL && head_a->x.quo <= x) {
+	    prev = head_a;
+	    next = &head_a->next;
+	    head_a = head_a->next;
+	}
+
+	head_b->prev = prev;
+	*next = head_b;
+	if (head_a == NULL)
+	    return head;
+
+start_with_b:
+	x = head_a->x.quo;
+	while (head_b != NULL && head_b->x.quo <= x) {
+	    prev = head_b;
+	    next = &head_b->next;
+	    head_b = head_b->next;
+	}
+
+	head_a->prev = prev;
+	*next = head_a;
+	if (head_b == NULL)
+	    return head;
+    } while (1);
+}
+
+/*
+ * Sort (part of) a list.
+ * Input:
+ *  - list: The list to be sorted; list cannot be NULL.
+ *  - limit: Recursion limit.
+ * Output:
+ *  - head_out: The head of the sorted list containing the first 2^(level+1) elements of the
+ *              input list; if the input list has fewer elements, head_out be a sorted list
+ *              containing all the elements of the input list.
+ * Returns the head of the list of unprocessed elements (NULL if the sorted list contains
+ * all the elements of the input list).
+ *
+ * Implementation notes:
+ * Special case single element list, unroll/inline the sorting of the first two elements.
+ * Some tail recursion is used since we iterate on the bottom-up solution of the problem
+ * (we start with a small sorted list and keep merging other lists of the same size to it).
+ */
+static struct edge *
+sort_edges (struct edge *list,
+	    unsigned int level,
+	    struct edge **head_out)
+{
+    struct edge *head_other, *remaining;
+    unsigned int i;
+
+    head_other = list->next;
+
+    if (head_other == NULL) {
+	*head_out = list;
+	return NULL;
+    }
+
+    remaining = head_other->next;
+    if (list->x.quo <= head_other->x.quo) {
+	*head_out = list;
+	head_other->next = NULL;
+    } else {
+	*head_out = head_other;
+	head_other->prev = list->prev;
+	head_other->next = list;
+	list->prev = head_other;
+	list->next = NULL;
+    }
+
+    for (i = 0; i < level && remaining; i++) {
+	remaining = sort_edges (remaining, i, &head_other);
+	*head_out = merge_sorted_edges (*head_out, head_other);
+    }
+
+    return remaining;
+}
+
+static struct edge *
+merge_unsorted_edges (struct edge *head, struct edge *unsorted)
+{
+    sort_edges (unsorted, UINT_MAX, &unsorted);
+    return merge_sorted_edges (head, unsorted);
+}
+
+/* Test if the edges on the active list can be safely advanced by a
+ * full row without intersections or any edges ending. */
+inline static int
+can_do_full_row (struct active_list *active)
+{
+    const struct edge *e;
+
+    /* Recomputes the minimum height of all edges on the active
+     * list if we have been dropping edges. */
+    if (active->min_height <= 0) {
+	int min_height = INT_MAX;
+	int is_vertical = 1;
+
+	e = active->head.next;
+	while (NULL != e) {
+	    if (e->height_left < min_height)
+		min_height = e->height_left;
+	    is_vertical &= e->vertical;
+	    e = e->next;
+	}
+
+	active->is_vertical = is_vertical;
+	active->min_height = min_height;
+    }
+
+    if (active->min_height < GRID_Y)
+	return 0;
+
+    return active->is_vertical;
+}
+
+/* Merges edges on the given subpixel row from the polygon to the
+ * active_list. */
+inline static void
+active_list_merge_edges_from_bucket(struct active_list *active,
+				    struct edge *edges)
+{
+    active->head.next = merge_unsorted_edges (active->head.next, edges);
+}
+
+inline static void
+polygon_fill_buckets (struct active_list *active,
+		      struct edge *edge,
+		      int y,
+		      struct edge **buckets)
+{
+    grid_scaled_y_t min_height = active->min_height;
+    int is_vertical = active->is_vertical;
+
+    while (edge) {
+	struct edge *next = edge->next;
+	int suby = edge->ytop - y;
+	if (buckets[suby])
+	    buckets[suby]->prev = edge;
+	edge->next = buckets[suby];
+	edge->prev = NULL;
+	buckets[suby] = edge;
+	if (edge->height_left < min_height)
+	    min_height = edge->height_left;
+	is_vertical &= edge->vertical;
+	edge = next;
+    }
+
+    active->is_vertical = is_vertical;
+    active->min_height = min_height;
+}
+
+inline static void
+sub_row (struct active_list *active,
+	 struct cell_list *coverages,
+	 unsigned int mask)
+{
+    struct edge *edge = active->head.next;
+    int xstart = INT_MIN, prev_x = INT_MIN;
+    int winding = 0;
+
+    cell_list_rewind (coverages);
+
+    while (&active->tail != edge) {
+	struct edge *next = edge->next;
+	int xend = edge->x.quo;
+
+	if (--edge->height_left) {
+	    edge->x.quo += edge->dxdy.quo;
+	    edge->x.rem += edge->dxdy.rem;
+	    if (edge->x.rem >= 0) {
+		++edge->x.quo;
+		edge->x.rem -= edge->dy;
+	    }
+
+	    if (edge->x.quo < prev_x) {
+		struct edge *pos = edge->prev;
+		pos->next = next;
+		next->prev = pos;
+		do {
+		    pos = pos->prev;
+		} while (edge->x.quo < pos->x.quo);
+		pos->next->prev = edge;
+		edge->next = pos->next;
+		edge->prev = pos;
+		pos->next = edge;
+	    } else
+		prev_x = edge->x.quo;
+	} else {
+	    edge->prev->next = next;
+	    next->prev = edge->prev;
+	}
+
+	winding += edge->dir;
+	if ((winding & mask) == 0) {
+	    if (next->x.quo != xend) {
+		cell_list_add_subspan (coverages, xstart, xend);
+		xstart = INT_MIN;
+	    }
+	} else if (xstart == INT_MIN)
+	    xstart = xend;
+
+	edge = next;
+    }
+}
+
+inline static void dec (struct edge *e, int h)
+{
+    e->height_left -= h;
+    if (e->height_left == 0) {
+	e->prev->next = e->next;
+	e->next->prev = e->prev;
+    }
+}
+
+static void
+full_row (struct active_list *active,
+	  struct cell_list *coverages,
+	  unsigned int mask)
+{
+    struct edge *left = active->head.next;
+
+    while (&active->tail != left) {
+	struct edge *right;
+	int winding;
+
+	dec (left, GRID_Y);
+
+	winding = left->dir;
+	right = left->next;
+	do {
+	    dec (right, GRID_Y);
+
+	    winding += right->dir;
+	    if ((winding & mask) == 0 && right->next->x.quo != right->x.quo)
+		break;
+
+	    right = right->next;
+	} while (1);
+
+	cell_list_set_rewind (coverages);
+	cell_list_render_edge (coverages, left, +1);
+	cell_list_render_edge (coverages, right, -1);
+
+	left = right->next;
+    }
+}
+
+static void
+_glitter_scan_converter_init(glitter_scan_converter_t *converter, jmp_buf *jmp)
+{
+    polygon_init(converter->polygon, jmp);
+    active_list_init(converter->active);
+    cell_list_init(converter->coverages, jmp);
+    converter->xmin=0;
+    converter->ymin=0;
+    converter->xmax=0;
+    converter->ymax=0;
+}
+
+static void
+_glitter_scan_converter_fini(glitter_scan_converter_t *self)
+{
+    if (self->spans != self->spans_embedded)
+	free (self->spans);
+
+    polygon_fini(self->polygon);
+    cell_list_fini(self->coverages);
+
+    self->xmin=0;
+    self->ymin=0;
+    self->xmax=0;
+    self->ymax=0;
+}
+
+static grid_scaled_t
+int_to_grid_scaled(int i, int scale)
+{
+    /* Clamp to max/min representable scaled number. */
+    if (i >= 0) {
+	if (i >= INT_MAX/scale)
+	    i = INT_MAX/scale;
+    }
+    else {
+	if (i <= INT_MIN/scale)
+	    i = INT_MIN/scale;
+    }
+    return i*scale;
+}
+
+#define int_to_grid_scaled_x(x) int_to_grid_scaled((x), GRID_X)
+#define int_to_grid_scaled_y(x) int_to_grid_scaled((x), GRID_Y)
+
+I glitter_status_t
+glitter_scan_converter_reset(
+			     glitter_scan_converter_t *converter,
+			     int xmin, int ymin,
+			     int xmax, int ymax)
+{
+    glitter_status_t status;
+
+    converter->xmin = 0; converter->xmax = 0;
+    converter->ymin = 0; converter->ymax = 0;
+
+    if (xmax - xmin > ARRAY_LENGTH(converter->spans_embedded)) {
+	converter->spans = _cairo_malloc_ab (xmax - xmin,
+					     sizeof (cairo_half_open_span_t));
+	if (unlikely (converter->spans == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else
+	converter->spans = converter->spans_embedded;
+
+    xmin = int_to_grid_scaled_x(xmin);
+    ymin = int_to_grid_scaled_y(ymin);
+    xmax = int_to_grid_scaled_x(xmax);
+    ymax = int_to_grid_scaled_y(ymax);
+
+    active_list_reset(converter->active);
+    cell_list_reset(converter->coverages);
+    status = polygon_reset(converter->polygon, ymin, ymax);
+    if (status)
+	return status;
+
+    converter->xmin = xmin;
+    converter->xmax = xmax;
+    converter->ymin = ymin;
+    converter->ymax = ymax;
+    return GLITTER_STATUS_SUCCESS;
+}
+
+/* INPUT_TO_GRID_X/Y (in_coord, out_grid_scaled, grid_scale)
+ *   These macros convert an input coordinate in the client's
+ *   device space to the rasterisation grid.
+ */
+/* Gah.. this bit of ugly defines INPUT_TO_GRID_X/Y so as to use
+ * shifts if possible, and something saneish if not.
+ */
+#if !defined(INPUT_TO_GRID_Y) && defined(GRID_Y_BITS) && GRID_Y_BITS <= GLITTER_INPUT_BITS
+#  define INPUT_TO_GRID_Y(in, out) (out) = (in) >> (GLITTER_INPUT_BITS - GRID_Y_BITS)
+#else
+#  define INPUT_TO_GRID_Y(in, out) INPUT_TO_GRID_general(in, out, GRID_Y)
+#endif
+
+#if !defined(INPUT_TO_GRID_X) && defined(GRID_X_BITS) && GRID_X_BITS <= GLITTER_INPUT_BITS
+#  define INPUT_TO_GRID_X(in, out) (out) = (in) >> (GLITTER_INPUT_BITS - GRID_X_BITS)
+#else
+#  define INPUT_TO_GRID_X(in, out) INPUT_TO_GRID_general(in, out, GRID_X)
+#endif
+
+#define INPUT_TO_GRID_general(in, out, grid_scale) do {		\
+    long long tmp__ = (long long)(grid_scale) * (in);	\
+    tmp__ >>= GLITTER_INPUT_BITS;				\
+    (out) = tmp__;						\
+} while (0)
+
+/* Add a new polygon edge from pixel (x1,y1) to (x2,y2) to the scan
+ * converter.  The coordinates represent pixel positions scaled by
+ * 2**GLITTER_PIXEL_BITS.  If this function fails then the scan
+ * converter should be reset or destroyed.  Dir must be +1 or -1,
+ * with the latter reversing the orientation of the edge. */
+I void
+glitter_scan_converter_add_edge (glitter_scan_converter_t *converter,
+				 const cairo_edge_t *edge)
+{
+    cairo_edge_t e;
+
+    INPUT_TO_GRID_Y (edge->top, e.top);
+    INPUT_TO_GRID_Y (edge->bottom, e.bottom);
+    if (e.top >= e.bottom)
+	return;
+
+    /* XXX: possible overflows if GRID_X/Y > 2**GLITTER_INPUT_BITS */
+    INPUT_TO_GRID_Y (edge->line.p1.y, e.line.p1.y);
+    INPUT_TO_GRID_Y (edge->line.p2.y, e.line.p2.y);
+    if (e.line.p1.y == e.line.p2.y)
+	e.line.p2.y++; /* Fudge to prevent div-by-zero */
+
+    INPUT_TO_GRID_X (edge->line.p1.x, e.line.p1.x);
+    INPUT_TO_GRID_X (edge->line.p2.x, e.line.p2.x);
+
+    e.dir = edge->dir;
+
+    polygon_add_edge (converter->polygon, &e);
+}
+
+static void
+step_edges (struct active_list *active, int count)
+{
+    struct edge *edge;
+
+    count *= GRID_Y;
+    for (edge = active->head.next; edge != &active->tail; edge = edge->next) {
+	edge->height_left -= count;
+	if (! edge->height_left) {
+	    edge->prev->next = edge->next;
+	    edge->next->prev = edge->prev;
+	}
+    }
+}
+
+static glitter_status_t
+blit_a8 (struct cell_list *cells,
+	 cairo_span_renderer_t *renderer,
+	 cairo_half_open_span_t *spans,
+	 int y, int height,
+	 int xmin, int xmax)
+{
+    struct cell *cell = cells->head.next;
+    int prev_x = xmin, last_x = -1;
+    int16_t cover = 0, last_cover = 0;
+    unsigned num_spans;
+
+    if (cell == &cells->tail)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Skip cells to the left of the clip region. */
+    while (cell->x < xmin) {
+	cover += cell->covered_height;
+	cell = cell->next;
+    }
+    cover *= GRID_X*2;
+
+    /* Form the spans from the coverages and areas. */
+    num_spans = 0;
+    for (; cell->x < xmax; cell = cell->next) {
+	int x = cell->x;
+	int16_t area;
+
+	if (x > prev_x && cover != last_cover) {
+	    spans[num_spans].x = prev_x;
+	    spans[num_spans].coverage = GRID_AREA_TO_ALPHA (cover);
+	    last_cover = cover;
+	    last_x = prev_x;
+	    ++num_spans;
+	}
+
+	cover += cell->covered_height*GRID_X*2;
+	area = cover - cell->uncovered_area;
+
+	if (area != last_cover) {
+	    spans[num_spans].x = x;
+	    spans[num_spans].coverage = GRID_AREA_TO_ALPHA (area);
+	    last_cover = area;
+	    last_x = x;
+	    ++num_spans;
+	}
+
+	prev_x = x+1;
+    }
+
+    if (prev_x <= xmax && cover != last_cover) {
+	spans[num_spans].x = prev_x;
+	spans[num_spans].coverage = GRID_AREA_TO_ALPHA (cover);
+	last_cover = cover;
+	last_x = prev_x;
+	++num_spans;
+    }
+
+    if (last_x < xmax && last_cover) {
+	spans[num_spans].x = xmax;
+	spans[num_spans].coverage = 0;
+	++num_spans;
+    }
+
+    /* Dump them into the renderer. */
+    return renderer->render_rows (renderer, y, height, spans, num_spans);
+}
+
+#define GRID_AREA_TO_A1(A)  ((GRID_AREA_TO_ALPHA (A) > 127) ? 255 : 0)
+static glitter_status_t
+blit_a1 (struct cell_list *cells,
+	 cairo_span_renderer_t *renderer,
+	 cairo_half_open_span_t *spans,
+	 int y, int height,
+	 int xmin, int xmax)
+{
+    struct cell *cell = cells->head.next;
+    int prev_x = xmin, last_x = -1;
+    int16_t cover = 0;
+    uint8_t coverage, last_cover = 0;
+    unsigned num_spans;
+
+    if (cell == &cells->tail)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Skip cells to the left of the clip region. */
+    while (cell->x < xmin) {
+	cover += cell->covered_height;
+	cell = cell->next;
+    }
+    cover *= GRID_X*2;
+
+    /* Form the spans from the coverages and areas. */
+    num_spans = 0;
+    for (; cell->x < xmax; cell = cell->next) {
+	int x = cell->x;
+	int16_t area;
+
+	coverage = GRID_AREA_TO_A1 (cover);
+	if (x > prev_x && coverage != last_cover) {
+	    last_x = spans[num_spans].x = prev_x;
+	    last_cover = spans[num_spans].coverage = coverage;
+	    ++num_spans;
+	}
+
+	cover += cell->covered_height*GRID_X*2;
+	area = cover - cell->uncovered_area;
+
+	coverage = GRID_AREA_TO_A1 (area);
+	if (coverage != last_cover) {
+	    last_x = spans[num_spans].x = x;
+	    last_cover = spans[num_spans].coverage = coverage;
+	    ++num_spans;
+	}
+
+	prev_x = x+1;
+    }
+
+    coverage = GRID_AREA_TO_A1 (cover);
+    if (prev_x <= xmax && coverage != last_cover) {
+	last_x = spans[num_spans].x = prev_x;
+	last_cover = spans[num_spans].coverage = coverage;
+	++num_spans;
+    }
+
+    if (last_x < xmax && last_cover) {
+	spans[num_spans].x = xmax;
+	spans[num_spans].coverage = 0;
+	++num_spans;
+    }
+    if (num_spans == 1)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* Dump them into the renderer. */
+    return renderer->render_rows (renderer, y, height, spans, num_spans);
+}
+
+
+I void
+glitter_scan_converter_render(glitter_scan_converter_t *converter,
+			      unsigned int winding_mask,
+			      int antialias,
+			      cairo_span_renderer_t *renderer)
+{
+    int i, j;
+    int ymax_i = converter->ymax / GRID_Y;
+    int ymin_i = converter->ymin / GRID_Y;
+    int xmin_i, xmax_i;
+    int h = ymax_i - ymin_i;
+    struct polygon *polygon = converter->polygon;
+    struct cell_list *coverages = converter->coverages;
+    struct active_list *active = converter->active;
+    struct edge *buckets[GRID_Y] = { 0 };
+
+    xmin_i = converter->xmin / GRID_X;
+    xmax_i = converter->xmax / GRID_X;
+    if (xmin_i >= xmax_i)
+	return;
+
+    /* Render each pixel row. */
+    for (i = 0; i < h; i = j) {
+	int do_full_row = 0;
+
+	j = i + 1;
+
+	/* Determine if we can ignore this row or use the full pixel
+	 * stepper. */
+	if (! polygon->y_buckets[i]) {
+	    if (active->head.next == &active->tail) {
+		active->min_height = INT_MAX;
+		active->is_vertical = 1;
+		for (; j < h && ! polygon->y_buckets[j]; j++)
+		    ;
+		continue;
+	    }
+
+	    do_full_row = can_do_full_row (active);
+	}
+
+	if (do_full_row) {
+	    /* Step by a full pixel row's worth. */
+	    full_row (active, coverages, winding_mask);
+
+	    if (active->is_vertical) {
+		while (j < h &&
+		       polygon->y_buckets[j] == NULL &&
+		       active->min_height >= 2*GRID_Y)
+		{
+		    active->min_height -= GRID_Y;
+		    j++;
+		}
+		if (j != i + 1)
+		    step_edges (active, j - (i + 1));
+	    }
+	} else {
+	    int sub;
+
+	    polygon_fill_buckets (active,
+				  polygon->y_buckets[i],
+				  (i+ymin_i)*GRID_Y,
+				  buckets);
+
+	    /* Subsample this row. */
+	    for (sub = 0; sub < GRID_Y; sub++) {
+		if (buckets[sub]) {
+		    active_list_merge_edges_from_bucket (active, buckets[sub]);
+		    buckets[sub] = NULL;
+		}
+
+		sub_row (active, coverages, winding_mask);
+	    }
+	}
+
+	if (antialias)
+	    blit_a8 (coverages, renderer, converter->spans,
+		     i+ymin_i, j-i, xmin_i, xmax_i);
+	else
+	    blit_a1 (coverages, renderer, converter->spans,
+		     i+ymin_i, j-i, xmin_i, xmax_i);
+	cell_list_reset (coverages);
+
+	active->min_height -= GRID_Y;
+    }
+}
+
+struct _cairo_tor22_scan_converter {
+    cairo_scan_converter_t base;
+
+    glitter_scan_converter_t converter[1];
+    cairo_fill_rule_t fill_rule;
+    cairo_antialias_t antialias;
+
+    jmp_buf jmp;
+};
+
+typedef struct _cairo_tor22_scan_converter cairo_tor22_scan_converter_t;
+
+static void
+_cairo_tor22_scan_converter_destroy (void *converter)
+{
+    cairo_tor22_scan_converter_t *self = converter;
+    if (self == NULL) {
+	return;
+    }
+    _glitter_scan_converter_fini (self->converter);
+    free(self);
+}
+
+cairo_status_t
+_cairo_tor22_scan_converter_add_polygon (void		*converter,
+				       const cairo_polygon_t *polygon)
+{
+    cairo_tor22_scan_converter_t *self = converter;
+    int i;
+
+#if 0
+    FILE *file = fopen ("polygon.txt", "w");
+    _cairo_debug_print_polygon (file, polygon);
+    fclose (file);
+#endif
+
+    for (i = 0; i < polygon->num_edges; i++)
+	 glitter_scan_converter_add_edge (self->converter, &polygon->edges[i]);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_tor22_scan_converter_generate (void			*converter,
+				    cairo_span_renderer_t	*renderer)
+{
+    cairo_tor22_scan_converter_t *self = converter;
+    cairo_status_t status;
+
+    if ((status = setjmp (self->jmp)))
+	return _cairo_scan_converter_set_error (self, _cairo_error (status));
+
+    glitter_scan_converter_render (self->converter,
+				   self->fill_rule == CAIRO_FILL_RULE_WINDING ? ~0 : 1,
+				   self->antialias != CAIRO_ANTIALIAS_NONE,
+				   renderer);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_scan_converter_t *
+_cairo_tor22_scan_converter_create (int			xmin,
+				  int			ymin,
+				  int			xmax,
+				  int			ymax,
+				  cairo_fill_rule_t	fill_rule,
+				  cairo_antialias_t	antialias)
+{
+    cairo_tor22_scan_converter_t *self;
+    cairo_status_t status;
+
+    self = _cairo_malloc (sizeof(struct _cairo_tor22_scan_converter));
+    if (unlikely (self == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto bail_nomem;
+    }
+
+    self->base.destroy = _cairo_tor22_scan_converter_destroy;
+    self->base.generate = _cairo_tor22_scan_converter_generate;
+
+    _glitter_scan_converter_init (self->converter, &self->jmp);
+    status = glitter_scan_converter_reset (self->converter,
+					   xmin, ymin, xmax, ymax);
+    if (unlikely (status))
+	goto bail;
+
+    self->fill_rule = fill_rule;
+    self->antialias = antialias;
+
+    return &self->base;
+
+ bail:
+    self->base.destroy(&self->base);
+ bail_nomem:
+    return _cairo_scan_converter_create_in_error (status);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-toy-font-face.c b/libs/cairo-1.16.0/src/cairo-toy-font-face.c
new file mode 100644
index 0000000..3d2217d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-toy-font-face.c
@@ -0,0 +1,524 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005,2008 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Graydon Hoare <graydon@redhat.com>
+ *      Owen Taylor <otaylor@redhat.com>
+ *      Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#define _DEFAULT_SOURCE /* for strdup() */
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+
+static const cairo_font_face_t _cairo_font_face_null_pointer = {
+    { 0 },				/* hash_entry */
+    CAIRO_STATUS_NULL_POINTER,		/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },			/* user_data */
+    NULL
+};
+
+static const cairo_font_face_t _cairo_font_face_invalid_string = {
+    { 0 },				/* hash_entry */
+    CAIRO_STATUS_INVALID_STRING,	/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },			/* user_data */
+    NULL
+};
+
+static const cairo_font_face_t _cairo_font_face_invalid_slant = {
+    { 0 },				/* hash_entry */
+    CAIRO_STATUS_INVALID_SLANT,		/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },			/* user_data */
+    NULL
+};
+
+static const cairo_font_face_t _cairo_font_face_invalid_weight = {
+    { 0 },				/* hash_entry */
+    CAIRO_STATUS_INVALID_WEIGHT,	/* status */
+    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
+    { 0, 0, 0, NULL },			/* user_data */
+    NULL
+};
+
+
+static const cairo_font_face_backend_t _cairo_toy_font_face_backend;
+
+static int
+_cairo_toy_font_face_keys_equal (const void *key_a,
+				 const void *key_b);
+
+/* We maintain a hash table from family/weight/slant =>
+ * #cairo_font_face_t for #cairo_toy_font_t. The primary purpose of
+ * this mapping is to provide unique #cairo_font_face_t values so that
+ * our cache and mapping from #cairo_font_face_t => #cairo_scaled_font_t
+ * works. Once the corresponding #cairo_font_face_t objects fall out of
+ * downstream caches, we don't need them in this hash table anymore.
+ *
+ * Modifications to this hash table are protected by
+ * _cairo_toy_font_face_mutex.
+ */
+static cairo_hash_table_t *cairo_toy_font_face_hash_table = NULL;
+
+static cairo_hash_table_t *
+_cairo_toy_font_face_hash_table_lock (void)
+{
+    CAIRO_MUTEX_LOCK (_cairo_toy_font_face_mutex);
+
+    if (cairo_toy_font_face_hash_table == NULL)
+    {
+	cairo_toy_font_face_hash_table =
+	    _cairo_hash_table_create (_cairo_toy_font_face_keys_equal);
+
+	if (cairo_toy_font_face_hash_table == NULL) {
+	    CAIRO_MUTEX_UNLOCK (_cairo_toy_font_face_mutex);
+	    return NULL;
+	}
+    }
+
+    return cairo_toy_font_face_hash_table;
+}
+
+static void
+_cairo_toy_font_face_hash_table_unlock (void)
+{
+    CAIRO_MUTEX_UNLOCK (_cairo_toy_font_face_mutex);
+}
+
+/**
+ * _cairo_toy_font_face_init_key:
+ *
+ * Initialize those portions of #cairo_toy_font_face_t needed to use
+ * it as a hash table key, including the hash code buried away in
+ * font_face->base.hash_entry. No memory allocation is performed here
+ * so that no fini call is needed. We do this to make it easier to use
+ * an automatic #cairo_toy_font_face_t variable as a key.
+ **/
+static void
+_cairo_toy_font_face_init_key (cairo_toy_font_face_t *key,
+			       const char	     *family,
+			       cairo_font_slant_t     slant,
+			       cairo_font_weight_t    weight)
+{
+    unsigned long hash;
+
+    key->family = family;
+    key->owns_family = FALSE;
+
+    key->slant = slant;
+    key->weight = weight;
+
+    /* 1607 and 1451 are just a couple of arbitrary primes. */
+    hash = _cairo_hash_string (family);
+    hash += ((unsigned long) slant) * 1607;
+    hash += ((unsigned long) weight) * 1451;
+
+    key->base.hash_entry.hash = hash;
+}
+
+static cairo_status_t
+_cairo_toy_font_face_create_impl_face (cairo_toy_font_face_t *font_face,
+				       cairo_font_face_t **impl_font_face)
+{
+    const cairo_font_face_backend_t * backend = CAIRO_FONT_FACE_BACKEND_DEFAULT;
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (unlikely (font_face->base.status))
+	return font_face->base.status;
+
+    if (backend->create_for_toy != NULL &&
+	0 != strncmp (font_face->family, CAIRO_USER_FONT_FAMILY_DEFAULT,
+		      strlen (CAIRO_USER_FONT_FAMILY_DEFAULT)))
+    {
+	status = backend->create_for_toy (font_face, impl_font_face);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	backend = &_cairo_user_font_face_backend;
+	status = backend->create_for_toy (font_face, impl_font_face);
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_toy_font_face_init (cairo_toy_font_face_t *font_face,
+			   const char	         *family,
+			   cairo_font_slant_t	  slant,
+			   cairo_font_weight_t	  weight)
+{
+    char *family_copy;
+    cairo_status_t status;
+
+    family_copy = strdup (family);
+    if (unlikely (family_copy == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_toy_font_face_init_key (font_face, family_copy, slant, weight);
+    font_face->owns_family = TRUE;
+
+    _cairo_font_face_init (&font_face->base, &_cairo_toy_font_face_backend);
+
+    status = _cairo_toy_font_face_create_impl_face (font_face,
+						    &font_face->impl_face);
+    if (unlikely (status)) {
+	free (family_copy);
+	return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_toy_font_face_fini (cairo_toy_font_face_t *font_face)
+{
+    /* We assert here that we own font_face->family before casting
+     * away the const qualifer. */
+    assert (font_face->owns_family);
+    free ((char*) font_face->family);
+
+    if (font_face->impl_face)
+	cairo_font_face_destroy (font_face->impl_face);
+}
+
+static int
+_cairo_toy_font_face_keys_equal (const void *key_a,
+				 const void *key_b)
+{
+    const cairo_toy_font_face_t *face_a = key_a;
+    const cairo_toy_font_face_t *face_b = key_b;
+
+    return (strcmp (face_a->family, face_b->family) == 0 &&
+	    face_a->slant == face_b->slant &&
+	    face_a->weight == face_b->weight);
+}
+
+/**
+ * cairo_toy_font_face_create:
+ * @family: a font family name, encoded in UTF-8
+ * @slant: the slant for the font
+ * @weight: the weight for the font
+ *
+ * Creates a font face from a triplet of family, slant, and weight.
+ * These font faces are used in implementation of the the #cairo_t "toy"
+ * font API.
+ *
+ * If @family is the zero-length string "", the platform-specific default
+ * family is assumed.  The default family then can be queried using
+ * cairo_toy_font_face_get_family().
+ *
+ * The cairo_select_font_face() function uses this to create font faces.
+ * See that function for limitations and other details of toy font faces.
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.8
+ **/
+cairo_font_face_t *
+cairo_toy_font_face_create (const char          *family,
+			    cairo_font_slant_t   slant,
+			    cairo_font_weight_t  weight)
+{
+    cairo_status_t status;
+    cairo_toy_font_face_t key, *font_face;
+    cairo_hash_table_t *hash_table;
+
+    if (family == NULL)
+	return (cairo_font_face_t*) &_cairo_font_face_null_pointer;
+
+    /* Make sure we've got valid UTF-8 for the family */
+    status = _cairo_utf8_to_ucs4 (family, -1, NULL, NULL);
+    if (unlikely (status)) {
+	if (status == CAIRO_STATUS_INVALID_STRING)
+	    return (cairo_font_face_t*) &_cairo_font_face_invalid_string;
+
+	return (cairo_font_face_t*) &_cairo_font_face_nil;
+    }
+
+    switch (slant) {
+	case CAIRO_FONT_SLANT_NORMAL:
+	case CAIRO_FONT_SLANT_ITALIC:
+	case CAIRO_FONT_SLANT_OBLIQUE:
+	    break;
+	default:
+	    return (cairo_font_face_t*) &_cairo_font_face_invalid_slant;
+    }
+
+    switch (weight) {
+	case CAIRO_FONT_WEIGHT_NORMAL:
+	case CAIRO_FONT_WEIGHT_BOLD:
+	    break;
+	default:
+	    return (cairo_font_face_t*) &_cairo_font_face_invalid_weight;
+    }
+
+    if (*family == '\0')
+	family = CAIRO_FONT_FAMILY_DEFAULT;
+
+    hash_table = _cairo_toy_font_face_hash_table_lock ();
+    if (unlikely (hash_table == NULL))
+	goto UNWIND;
+
+    _cairo_toy_font_face_init_key (&key, family, slant, weight);
+
+    /* Return existing font_face if it exists in the hash table. */
+    font_face = _cairo_hash_table_lookup (hash_table,
+					  &key.base.hash_entry);
+    if (font_face != NULL) {
+	if (font_face->base.status == CAIRO_STATUS_SUCCESS) {
+	    cairo_font_face_reference (&font_face->base);
+	    _cairo_toy_font_face_hash_table_unlock ();
+	    return &font_face->base;
+	}
+
+	/* remove the bad font from the hash table */
+	_cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
+    }
+
+    /* Otherwise create it and insert into hash table. */
+    font_face = _cairo_malloc (sizeof (cairo_toy_font_face_t));
+    if (unlikely (font_face == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto UNWIND_HASH_TABLE_LOCK;
+    }
+
+    status = _cairo_toy_font_face_init (font_face, family, slant, weight);
+    if (unlikely (status))
+	goto UNWIND_FONT_FACE_MALLOC;
+
+    assert (font_face->base.hash_entry.hash == key.base.hash_entry.hash);
+    status = _cairo_hash_table_insert (hash_table, &font_face->base.hash_entry);
+    if (unlikely (status))
+	goto UNWIND_FONT_FACE_INIT;
+
+    _cairo_toy_font_face_hash_table_unlock ();
+
+    return &font_face->base;
+
+ UNWIND_FONT_FACE_INIT:
+    _cairo_toy_font_face_fini (font_face);
+ UNWIND_FONT_FACE_MALLOC:
+    free (font_face);
+ UNWIND_HASH_TABLE_LOCK:
+    _cairo_toy_font_face_hash_table_unlock ();
+ UNWIND:
+    return (cairo_font_face_t*) &_cairo_font_face_nil;
+}
+slim_hidden_def (cairo_toy_font_face_create);
+
+static cairo_bool_t
+_cairo_toy_font_face_destroy (void *abstract_face)
+{
+    cairo_toy_font_face_t *font_face = abstract_face;
+    cairo_hash_table_t *hash_table;
+
+    hash_table = _cairo_toy_font_face_hash_table_lock ();
+    /* All created objects must have been mapped in the hash table. */
+    assert (hash_table != NULL);
+
+    if (! _cairo_reference_count_dec_and_test (&font_face->base.ref_count)) {
+	/* somebody recreated the font whilst we waited for the lock */
+	_cairo_toy_font_face_hash_table_unlock ();
+	return FALSE;
+    }
+
+    /* Font faces in SUCCESS status are guaranteed to be in the
+     * hashtable. Font faces in an error status are removed from the
+     * hashtable if they are found during a lookup, thus they should
+     * only be removed if they are in the hashtable. */
+    if (likely (font_face->base.status == CAIRO_STATUS_SUCCESS) ||
+	_cairo_hash_table_lookup (hash_table, &font_face->base.hash_entry) == font_face)
+	_cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
+
+    _cairo_toy_font_face_hash_table_unlock ();
+
+    _cairo_toy_font_face_fini (font_face);
+    return TRUE;
+}
+
+static cairo_status_t
+_cairo_toy_font_face_scaled_font_create (void                *abstract_font_face,
+					 const cairo_matrix_t       *font_matrix,
+					 const cairo_matrix_t       *ctm,
+					 const cairo_font_options_t *options,
+					 cairo_scaled_font_t	   **scaled_font)
+{
+    cairo_toy_font_face_t *font_face = (cairo_toy_font_face_t *) abstract_font_face;
+
+    ASSERT_NOT_REACHED;
+
+    return _cairo_font_face_set_error (&font_face->base, CAIRO_STATUS_FONT_TYPE_MISMATCH);
+}
+
+static cairo_font_face_t *
+_cairo_toy_font_face_get_implementation (void                *abstract_font_face,
+					 const cairo_matrix_t       *font_matrix,
+					 const cairo_matrix_t       *ctm,
+					 const cairo_font_options_t *options)
+{
+    cairo_toy_font_face_t *font_face = abstract_font_face;
+
+    if (font_face->impl_face) {
+	cairo_font_face_t *impl = font_face->impl_face;
+
+	if (impl->backend->get_implementation != NULL) {
+	    return impl->backend->get_implementation (impl,
+						      font_matrix,
+						      ctm,
+						      options);
+	}
+
+	return cairo_font_face_reference (impl);
+    }
+
+    return abstract_font_face;
+}
+
+static cairo_bool_t
+_cairo_font_face_is_toy (cairo_font_face_t *font_face)
+{
+    return font_face->backend == &_cairo_toy_font_face_backend;
+}
+
+/**
+ * cairo_toy_font_face_get_family:
+ * @font_face: A toy font face
+ *
+ * Gets the familly name of a toy font.
+ *
+ * Return value: The family name.  This string is owned by the font face
+ * and remains valid as long as the font face is alive (referenced).
+ *
+ * Since: 1.8
+ **/
+const char *
+cairo_toy_font_face_get_family (cairo_font_face_t *font_face)
+{
+    cairo_toy_font_face_t *toy_font_face;
+
+    if (font_face->status)
+	return CAIRO_FONT_FAMILY_DEFAULT;
+
+    toy_font_face = (cairo_toy_font_face_t *) font_face;
+    if (! _cairo_font_face_is_toy (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return CAIRO_FONT_FAMILY_DEFAULT;
+    }
+    assert (toy_font_face->owns_family);
+    return toy_font_face->family;
+}
+
+/**
+ * cairo_toy_font_face_get_slant:
+ * @font_face: A toy font face
+ *
+ * Gets the slant a toy font.
+ *
+ * Return value: The slant value
+ *
+ * Since: 1.8
+ **/
+cairo_font_slant_t
+cairo_toy_font_face_get_slant (cairo_font_face_t *font_face)
+{
+    cairo_toy_font_face_t *toy_font_face;
+
+    if (font_face->status)
+	return CAIRO_FONT_SLANT_DEFAULT;
+
+    toy_font_face = (cairo_toy_font_face_t *) font_face;
+    if (! _cairo_font_face_is_toy (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return CAIRO_FONT_SLANT_DEFAULT;
+    }
+    return toy_font_face->slant;
+}
+slim_hidden_def (cairo_toy_font_face_get_slant);
+
+/**
+ * cairo_toy_font_face_get_weight:
+ * @font_face: A toy font face
+ *
+ * Gets the weight a toy font.
+ *
+ * Return value: The weight value
+ *
+ * Since: 1.8
+ **/
+cairo_font_weight_t
+cairo_toy_font_face_get_weight (cairo_font_face_t *font_face)
+{
+    cairo_toy_font_face_t *toy_font_face;
+
+    if (font_face->status)
+	return CAIRO_FONT_WEIGHT_DEFAULT;
+
+    toy_font_face = (cairo_toy_font_face_t *) font_face;
+    if (! _cairo_font_face_is_toy (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return CAIRO_FONT_WEIGHT_DEFAULT;
+    }
+    return toy_font_face->weight;
+}
+slim_hidden_def (cairo_toy_font_face_get_weight);
+
+static const cairo_font_face_backend_t _cairo_toy_font_face_backend = {
+    CAIRO_FONT_TYPE_TOY,
+    NULL,					/* create_for_toy */
+    _cairo_toy_font_face_destroy,
+    _cairo_toy_font_face_scaled_font_create,
+    _cairo_toy_font_face_get_implementation
+};
+
+void
+_cairo_toy_font_face_reset_static_data (void)
+{
+    cairo_hash_table_t *hash_table;
+
+    /* We manually acquire the lock rather than calling
+     * cairo_toy_font_face_hash_table_lock simply to avoid
+     * creating the table only to destroy it again. */
+    CAIRO_MUTEX_LOCK (_cairo_toy_font_face_mutex);
+    hash_table = cairo_toy_font_face_hash_table;
+    cairo_toy_font_face_hash_table = NULL;
+    CAIRO_MUTEX_UNLOCK (_cairo_toy_font_face_mutex);
+
+    if (hash_table != NULL)
+	_cairo_hash_table_destroy (hash_table);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-traps-compositor.c b/libs/cairo-1.16.0/src/cairo-traps-compositor.c
new file mode 100644
index 0000000..3414fc2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-traps-compositor.c
@@ -0,0 +1,2351 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-pattern-inline.h"
+#include "cairo-paginated-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-observer-private.h"
+#include "cairo-region-private.h"
+#include "cairo-spans-private.h"
+#include "cairo-traps-private.h"
+#include "cairo-tristrip-private.h"
+
+typedef cairo_int_status_t
+(*draw_func_t) (const cairo_traps_compositor_t *compositor,
+		cairo_surface_t			*dst,
+		void				*closure,
+		cairo_operator_t		 op,
+		cairo_surface_t		*src,
+		int				 src_x,
+		int				 src_y,
+		int				 dst_x,
+		int				 dst_y,
+		const cairo_rectangle_int_t	*extents,
+		cairo_clip_t			*clip);
+
+static void do_unaligned_row(void (*blt)(void *closure,
+					 int16_t x, int16_t y,
+					 int16_t w, int16_t h,
+					 uint16_t coverage),
+			     void *closure,
+			     const cairo_box_t *b,
+			     int tx, int y, int h,
+			     uint16_t coverage)
+{
+    int x1 = _cairo_fixed_integer_part (b->p1.x) - tx;
+    int x2 = _cairo_fixed_integer_part (b->p2.x) - tx;
+    if (x2 > x1) {
+	if (! _cairo_fixed_is_integer (b->p1.x)) {
+	    blt(closure, x1, y, 1, h,
+		coverage * (256 - _cairo_fixed_fractional_part (b->p1.x)));
+	    x1++;
+	}
+
+	if (x2 > x1)
+	    blt(closure, x1, y, x2-x1, h, (coverage << 8) - (coverage >> 8));
+
+	if (! _cairo_fixed_is_integer (b->p2.x))
+	    blt(closure, x2, y, 1, h,
+		coverage * _cairo_fixed_fractional_part (b->p2.x));
+    } else
+	blt(closure, x1, y, 1, h,
+	    coverage * (b->p2.x - b->p1.x));
+}
+
+static void do_unaligned_box(void (*blt)(void *closure,
+					 int16_t x, int16_t y,
+					 int16_t w, int16_t h,
+					 uint16_t coverage),
+			     void *closure,
+			     const cairo_box_t *b, int tx, int ty)
+{
+    int y1 = _cairo_fixed_integer_part (b->p1.y) - ty;
+    int y2 = _cairo_fixed_integer_part (b->p2.y) - ty;
+    if (y2 > y1) {
+	if (! _cairo_fixed_is_integer (b->p1.y)) {
+	    do_unaligned_row(blt, closure, b, tx, y1, 1,
+			     256 - _cairo_fixed_fractional_part (b->p1.y));
+	    y1++;
+	}
+
+	if (y2 > y1)
+	    do_unaligned_row(blt, closure, b, tx, y1, y2-y1, 256);
+
+	if (! _cairo_fixed_is_integer (b->p2.y))
+	    do_unaligned_row(blt, closure, b, tx, y2, 1,
+			     _cairo_fixed_fractional_part (b->p2.y));
+    } else
+	do_unaligned_row(blt, closure, b, tx, y1, 1,
+			 b->p2.y - b->p1.y);
+}
+
+struct blt_in {
+    const cairo_traps_compositor_t *compositor;
+    cairo_surface_t *dst;
+    cairo_boxes_t boxes;
+};
+
+static void blt_in(void *closure,
+		   int16_t x, int16_t y,
+		   int16_t w, int16_t h,
+		   uint16_t coverage)
+{
+    struct blt_in *info = closure;
+    cairo_color_t color;
+
+    if (CAIRO_ALPHA_SHORT_IS_OPAQUE (coverage))
+	return;
+
+    _cairo_box_from_integers (&info->boxes.chunks.base[0], x, y, w, h);
+
+    _cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double) 0xffff);
+    info->compositor->fill_boxes (info->dst,
+				  CAIRO_OPERATOR_IN, &color,
+				  &info->boxes);
+}
+
+static void
+add_rect_with_offset (cairo_boxes_t *boxes, int x1, int y1, int x2, int y2, int dx, int dy)
+{
+    cairo_box_t box;
+    cairo_int_status_t status;
+
+    box.p1.x = _cairo_fixed_from_int (x1 - dx);
+    box.p1.y = _cairo_fixed_from_int (y1 - dy);
+    box.p2.x = _cairo_fixed_from_int (x2 - dx);
+    box.p2.y = _cairo_fixed_from_int (y2 - dy);
+
+    status = _cairo_boxes_add (boxes, CAIRO_ANTIALIAS_DEFAULT, &box);
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+}
+
+static cairo_int_status_t
+combine_clip_as_traps (const cairo_traps_compositor_t *compositor,
+		       cairo_surface_t *mask,
+		       const cairo_clip_t *clip,
+		       const cairo_rectangle_int_t *extents)
+{
+    cairo_polygon_t polygon;
+    cairo_fill_rule_t fill_rule;
+    cairo_antialias_t antialias;
+    cairo_traps_t traps;
+    cairo_surface_t *src;
+    cairo_box_t box;
+    cairo_rectangle_int_t fixup;
+    int src_x, src_y;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = _cairo_clip_get_polygon (clip, &polygon,
+				      &fill_rule, &antialias);
+    if (status)
+	return status;
+
+    _cairo_traps_init (&traps);
+    status = _cairo_bentley_ottmann_tessellate_polygon (&traps,
+							&polygon,
+							fill_rule);
+    _cairo_polygon_fini (&polygon);
+    if (unlikely (status))
+	return status;
+
+    src = compositor->pattern_to_surface (mask, NULL, FALSE,
+					  extents, NULL,
+					  &src_x, &src_y);
+    if (unlikely (src->status)) {
+	_cairo_traps_fini (&traps);
+	return src->status;
+    }
+
+    status = compositor->composite_traps (mask, CAIRO_OPERATOR_IN, src,
+					  src_x, src_y,
+					  extents->x, extents->y,
+					  extents,
+					  antialias, &traps);
+
+    _cairo_traps_extents (&traps, &box);
+    _cairo_box_round_to_rectangle (&box, &fixup);
+    _cairo_traps_fini (&traps);
+    cairo_surface_destroy (src);
+
+    if (unlikely (status))
+	return status;
+
+    if (! _cairo_rectangle_intersect (&fixup, extents))
+	return CAIRO_STATUS_SUCCESS;
+
+    if (fixup.width < extents->width || fixup.height < extents->height) {
+	cairo_boxes_t clear;
+
+	_cairo_boxes_init (&clear);
+
+	/* top */
+	if (fixup.y != extents->y) {
+	    add_rect_with_offset (&clear,
+				  extents->x, extents->y,
+				  extents->x + extents->width,
+				  fixup.y,
+				  extents->x, extents->y);
+	}
+	/* left */
+	if (fixup.x != extents->x) {
+	    add_rect_with_offset (&clear,
+				  extents->x, fixup.y,
+				  fixup.x,
+				  fixup.y + fixup.height,
+				  extents->x, extents->y);
+	}
+	/* right */
+	if (fixup.x + fixup.width != extents->x + extents->width) {
+	    add_rect_with_offset (&clear,
+				  fixup.x + fixup.width,
+				  fixup.y,
+				  extents->x + extents->width,
+				  fixup.y + fixup.height,
+				  extents->x, extents->y);
+	}
+	/* bottom */
+	if (fixup.y + fixup.height != extents->y + extents->height) {
+	    add_rect_with_offset (&clear,
+				  extents->x,
+				  fixup.y + fixup.height,
+				  extents->x + extents->width,
+				  extents->y + extents->height,
+				  extents->x, extents->y);
+	}
+
+	status = compositor->fill_boxes (mask,
+					 CAIRO_OPERATOR_CLEAR,
+					 CAIRO_COLOR_TRANSPARENT,
+					 &clear);
+
+	_cairo_boxes_fini (&clear);
+    }
+
+    return status;
+}
+
+static cairo_status_t
+__clip_to_surface (const cairo_traps_compositor_t *compositor,
+		   const cairo_composite_rectangles_t *composite,
+		   const cairo_rectangle_int_t *extents,
+		   cairo_surface_t **surface)
+{
+    cairo_surface_t *mask;
+    cairo_polygon_t polygon;
+    cairo_fill_rule_t fill_rule;
+    cairo_antialias_t antialias;
+    cairo_traps_t traps;
+    cairo_boxes_t clear;
+    cairo_surface_t *src;
+    int src_x, src_y;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = _cairo_clip_get_polygon (composite->clip, &polygon,
+				      &fill_rule, &antialias);
+    if (status)
+	return status;
+
+    _cairo_traps_init (&traps);
+    status = _cairo_bentley_ottmann_tessellate_polygon (&traps,
+							&polygon,
+							fill_rule);
+    _cairo_polygon_fini (&polygon);
+    if (unlikely (status))
+	return status;
+
+    mask = _cairo_surface_create_scratch (composite->surface,
+					  CAIRO_CONTENT_ALPHA,
+					  extents->width,
+					  extents->height,
+					  NULL);
+    if (unlikely (mask->status)) {
+	_cairo_traps_fini (&traps);
+	return status;
+    }
+
+    src = compositor->pattern_to_surface (mask, NULL, FALSE,
+					  extents, NULL,
+					  &src_x, &src_y);
+    if (unlikely (status = src->status))
+	goto error;
+
+    status = compositor->acquire (mask);
+    if (unlikely (status))
+	goto error;
+
+    _cairo_boxes_init_from_rectangle (&clear,
+				      0, 0,
+				      extents->width,
+				      extents->height);
+    status = compositor->fill_boxes (mask,
+				     CAIRO_OPERATOR_CLEAR,
+				     CAIRO_COLOR_TRANSPARENT,
+				     &clear);
+    if (unlikely (status))
+	goto error_release;
+
+    status = compositor->composite_traps (mask, CAIRO_OPERATOR_ADD, src,
+					  src_x, src_y,
+					  extents->x, extents->y,
+					  extents,
+					  antialias, &traps);
+    if (unlikely (status))
+	goto error_release;
+
+    compositor->release (mask);
+    *surface = mask;
+out:
+    cairo_surface_destroy (src);
+    _cairo_traps_fini (&traps);
+    return status;
+
+error_release:
+    compositor->release (mask);
+error:
+    cairo_surface_destroy (mask);
+    goto out;
+}
+
+static cairo_surface_t *
+traps_get_clip_surface (const cairo_traps_compositor_t *compositor,
+			const cairo_composite_rectangles_t *composite,
+			const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_t *surface = NULL;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = __clip_to_surface (compositor, composite, extents, &surface);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	surface = _cairo_surface_create_scratch (composite->surface,
+						 CAIRO_CONTENT_ALPHA,
+						 extents->width,
+						 extents->height,
+						 CAIRO_COLOR_WHITE);
+	if (unlikely (surface->status))
+	    return surface;
+
+	status = _cairo_clip_combine_with_surface (composite->clip, surface,
+						   extents->x, extents->y);
+    }
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+    }
+
+    return surface;
+}
+
+static void blt_unaligned_boxes(const cairo_traps_compositor_t *compositor,
+				cairo_surface_t *surface,
+				int dx, int dy,
+				cairo_box_t *boxes,
+				int num_boxes)
+{
+    struct blt_in info;
+    int i;
+
+    info.compositor = compositor;
+    info.dst = surface;
+    _cairo_boxes_init (&info.boxes);
+    info.boxes.num_boxes = 1;
+    for (i = 0; i < num_boxes; i++) {
+	cairo_box_t *b = &boxes[i];
+
+	if (! _cairo_fixed_is_integer (b->p1.x) ||
+	    ! _cairo_fixed_is_integer (b->p1.y) ||
+	    ! _cairo_fixed_is_integer (b->p2.x) ||
+	    ! _cairo_fixed_is_integer (b->p2.y))
+	{
+	    do_unaligned_box(blt_in, &info, b, dx, dy);
+	}
+    }
+}
+
+static cairo_surface_t *
+create_composite_mask (const cairo_traps_compositor_t *compositor,
+		       cairo_surface_t		*dst,
+		       void			*draw_closure,
+		       draw_func_t		 draw_func,
+		       draw_func_t		 mask_func,
+		       const cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *surface, *src;
+    cairo_int_status_t status;
+    int src_x, src_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    surface = _cairo_surface_create_scratch (dst, CAIRO_CONTENT_ALPHA,
+					     extents->bounded.width,
+					     extents->bounded.height,
+					     NULL);
+    if (unlikely (surface->status))
+	return surface;
+
+    src = compositor->pattern_to_surface (surface,
+					  &_cairo_pattern_white.base,
+					  FALSE,
+					  &extents->bounded,
+					  &extents->bounded,
+					  &src_x, &src_y);
+    if (unlikely (src->status)) {
+	cairo_surface_destroy (surface);
+	return src;
+    }
+
+    status = compositor->acquire (surface);
+    if (unlikely (status)) {
+	cairo_surface_destroy (src);
+	cairo_surface_destroy (surface);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    if (!surface->is_clear) {
+	cairo_boxes_t clear;
+
+	_cairo_boxes_init_from_rectangle (&clear,
+					  0, 0,
+					  extents->bounded.width,
+					  extents->bounded.height);
+	status = compositor->fill_boxes (surface,
+					 CAIRO_OPERATOR_CLEAR,
+					 CAIRO_COLOR_TRANSPARENT,
+					 &clear);
+	if (unlikely (status))
+	    goto error;
+
+	surface->is_clear = TRUE;
+    }
+
+    if (mask_func) {
+	status = mask_func (compositor, surface, draw_closure,
+			    CAIRO_OPERATOR_SOURCE, src, src_x, src_y,
+			    extents->bounded.x, extents->bounded.y,
+			    &extents->bounded, extents->clip);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    surface->is_clear = FALSE;
+	    goto out;
+	}
+	if (unlikely (status != CAIRO_INT_STATUS_UNSUPPORTED))
+	    goto error;
+    }
+
+    /* Is it worth setting the clip region here? */
+    status = draw_func (compositor, surface, draw_closure,
+			CAIRO_OPERATOR_ADD, src, src_x, src_y,
+			extents->bounded.x, extents->bounded.y,
+			&extents->bounded, NULL);
+    if (unlikely (status))
+	goto error;
+
+    surface->is_clear = FALSE;
+    if (extents->clip->path != NULL) {
+	status = combine_clip_as_traps (compositor, surface,
+					extents->clip, &extents->bounded);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	    status = _cairo_clip_combine_with_surface (extents->clip, surface,
+						       extents->bounded.x,
+						       extents->bounded.y);
+	}
+	if (unlikely (status))
+	    goto error;
+    } else if (extents->clip->boxes) {
+	blt_unaligned_boxes(compositor, surface,
+			    extents->bounded.x, extents->bounded.y,
+			    extents->clip->boxes, extents->clip->num_boxes);
+
+    }
+
+out:
+    compositor->release (surface);
+    cairo_surface_destroy (src);
+    return surface;
+
+error:
+    compositor->release (surface);
+    if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+    }
+    cairo_surface_destroy (src);
+    return surface;
+}
+
+/* Handles compositing with a clip surface when the operator allows
+ * us to combine the clip with the mask
+ */
+static cairo_status_t
+clip_and_composite_with_mask (const cairo_traps_compositor_t *compositor,
+			      const cairo_composite_rectangles_t*extents,
+			      draw_func_t		 draw_func,
+			      draw_func_t		 mask_func,
+			      void			*draw_closure,
+			      cairo_operator_t		 op,
+			      cairo_surface_t	*src,
+			      int src_x, int src_y)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_surface_t *mask;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    mask = create_composite_mask (compositor, dst, draw_closure,
+				  draw_func, mask_func,
+				  extents);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    if (mask->is_clear)
+	goto skip;
+
+    if (src != NULL || dst->content != CAIRO_CONTENT_ALPHA) {
+	compositor->composite (dst, op, src, mask,
+			       extents->bounded.x + src_x,
+			       extents->bounded.y + src_y,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    } else {
+	compositor->composite (dst, op, mask, NULL,
+			       0, 0,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    }
+
+skip:
+    cairo_surface_destroy (mask);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Handles compositing with a clip surface when we have to do the operation
+ * in two pieces and combine them together.
+ */
+static cairo_status_t
+clip_and_composite_combine (const cairo_traps_compositor_t *compositor,
+			    const cairo_composite_rectangles_t*extents,
+			    draw_func_t		 draw_func,
+			    void			*draw_closure,
+			    cairo_operator_t		 op,
+			    cairo_surface_t	*src,
+			    int src_x, int src_y)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_surface_t *tmp, *clip;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    tmp = _cairo_surface_create_scratch (dst, dst->content,
+					 extents->bounded.width,
+					 extents->bounded.height,
+					 NULL);
+    if (unlikely (tmp->status))
+	return tmp->status;
+
+    status = compositor->acquire (tmp);
+    if (unlikely (status)) {
+	cairo_surface_destroy (tmp);
+	return status;
+    }
+
+    compositor->composite (tmp,
+			   dst->is_clear ? CAIRO_OPERATOR_CLEAR : CAIRO_OPERATOR_SOURCE,
+			   dst, NULL,
+			   extents->bounded.x,      extents->bounded.y,
+			   0, 0,
+			   0, 0,
+			   extents->bounded.width,  extents->bounded.height);
+
+    status = draw_func (compositor, tmp, draw_closure, op,
+			src, src_x, src_y,
+			extents->bounded.x, extents->bounded.y,
+			&extents->bounded, NULL);
+
+    if (unlikely (status))
+	goto cleanup;
+
+    clip = traps_get_clip_surface (compositor, extents, &extents->bounded);
+    if (unlikely ((status = clip->status)))
+	goto cleanup;
+
+    if (dst->is_clear) {
+	compositor->composite (dst, CAIRO_OPERATOR_SOURCE, tmp, clip,
+			       0, 0,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    } else {
+	compositor->lerp (dst, tmp, clip,
+			  0, 0,
+			  0,0,
+			  extents->bounded.x,     extents->bounded.y,
+			  extents->bounded.width, extents->bounded.height);
+    }
+    cairo_surface_destroy (clip);
+
+cleanup:
+    compositor->release (tmp);
+    cairo_surface_destroy (tmp);
+
+    return status;
+}
+
+/* Handles compositing for %CAIRO_OPERATOR_SOURCE, which is special; it's
+ * defined as (src IN mask IN clip) ADD (dst OUT (mask IN clip))
+ */
+static cairo_status_t
+clip_and_composite_source (const cairo_traps_compositor_t	*compositor,
+			   cairo_surface_t			*dst,
+			   draw_func_t				 draw_func,
+			   draw_func_t				 mask_func,
+			   void					*draw_closure,
+			   cairo_surface_t		*src,
+			   int src_x,
+			   int src_y,
+			   const cairo_composite_rectangles_t	*extents)
+{
+    cairo_surface_t *mask;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    /* Create a surface that is mask IN clip */
+    mask = create_composite_mask (compositor, dst, draw_closure,
+				  draw_func, mask_func,
+				  extents);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    if (mask->is_clear)
+	goto skip;
+
+    if (dst->is_clear) {
+	compositor->composite (dst, CAIRO_OPERATOR_SOURCE, src, mask,
+			       extents->bounded.x + src_x, extents->bounded.y + src_y,
+			       0, 0,
+			       extents->bounded.x,      extents->bounded.y,
+			       extents->bounded.width,  extents->bounded.height);
+    } else {
+	compositor->lerp (dst, src, mask,
+			  extents->bounded.x + src_x, extents->bounded.y + src_y,
+			  0, 0,
+			  extents->bounded.x,     extents->bounded.y,
+			  extents->bounded.width, extents->bounded.height);
+    }
+
+skip:
+    cairo_surface_destroy (mask);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+can_reduce_alpha_op (cairo_operator_t op)
+{
+    int iop = op;
+    switch (iop) {
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_ADD:
+	return TRUE;
+    default:
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+reduce_alpha_op (cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_operator_t op = extents->op;
+    const cairo_pattern_t *pattern = &extents->source_pattern.base;
+    return dst->is_clear &&
+	   dst->content == CAIRO_CONTENT_ALPHA &&
+	   _cairo_pattern_is_opaque_solid (pattern) &&
+	   can_reduce_alpha_op (op);
+}
+
+static cairo_status_t
+fixup_unbounded_with_mask (const cairo_traps_compositor_t *compositor,
+			   const cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_surface_t *mask;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    /* XXX can we avoid querying the clip surface again? */
+    mask = traps_get_clip_surface (compositor, extents, &extents->unbounded);
+    if (unlikely (mask->status))
+	return mask->status;
+
+    /* top */
+    if (extents->bounded.y != extents->unbounded.y) {
+	int x = extents->unbounded.x;
+	int y = extents->unbounded.y;
+	int width = extents->unbounded.width;
+	int height = extents->bounded.y - y;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       0, 0,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    /* left */
+    if (extents->bounded.x != extents->unbounded.x) {
+	int x = extents->unbounded.x;
+	int y = extents->bounded.y;
+	int width = extents->bounded.x - x;
+	int height = extents->bounded.height;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       0, y - extents->unbounded.y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    /* right */
+    if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+	int x = extents->bounded.x + extents->bounded.width;
+	int y = extents->bounded.y;
+	int width = extents->unbounded.x + extents->unbounded.width - x;
+	int height = extents->bounded.height;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       x - extents->unbounded.x, y - extents->unbounded.y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    /* bottom */
+    if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+	int x = extents->unbounded.x;
+	int y = extents->bounded.y + extents->bounded.height;
+	int width = extents->unbounded.width;
+	int height = extents->unbounded.y + extents->unbounded.height - y;
+
+	compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL,
+			       0, y - extents->unbounded.y,
+			       0, 0,
+			       x, y,
+			       width, height);
+    }
+
+    cairo_surface_destroy (mask);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+add_rect (cairo_boxes_t *boxes, int x1, int y1, int x2, int y2)
+{
+    cairo_box_t box;
+    cairo_int_status_t status;
+
+    box.p1.x = _cairo_fixed_from_int (x1);
+    box.p1.y = _cairo_fixed_from_int (y1);
+    box.p2.x = _cairo_fixed_from_int (x2);
+    box.p2.y = _cairo_fixed_from_int (y2);
+
+    status = _cairo_boxes_add (boxes, CAIRO_ANTIALIAS_DEFAULT, &box);
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+}
+
+static cairo_status_t
+fixup_unbounded (const cairo_traps_compositor_t *compositor,
+		 cairo_composite_rectangles_t *extents,
+		 cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_boxes_t clear, tmp;
+    cairo_box_t box;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (extents->bounded.width  == extents->unbounded.width &&
+	extents->bounded.height == extents->unbounded.height)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    assert (extents->clip->path == NULL);
+
+    /* subtract the drawn boxes from the unbounded area */
+    _cairo_boxes_init (&clear);
+
+    box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+    box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
+    box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
+    box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
+
+    if (boxes == NULL) {
+	if (extents->bounded.width == 0 || extents->bounded.height == 0) {
+	    goto empty;
+	} else {
+	    /* top */
+	    if (extents->bounded.y != extents->unbounded.y) {
+		add_rect (&clear,
+			  extents->unbounded.x, extents->unbounded.y,
+			  extents->unbounded.x + extents->unbounded.width,
+			  extents->bounded.y);
+	    }
+	    /* left */
+	    if (extents->bounded.x != extents->unbounded.x) {
+		add_rect (&clear,
+			  extents->unbounded.x, extents->bounded.y,
+			  extents->bounded.x,
+			  extents->bounded.y + extents->bounded.height);
+	    }
+	    /* right */
+	    if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+		add_rect (&clear,
+			  extents->bounded.x + extents->bounded.width,
+			  extents->bounded.y,
+			  extents->unbounded.x + extents->unbounded.width,
+			  extents->bounded.y + extents->bounded.height);
+	    }
+	    /* bottom */
+	    if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+		add_rect (&clear,
+			  extents->unbounded.x,
+			  extents->bounded.y + extents->bounded.height,
+			  extents->unbounded.x + extents->unbounded.width,
+			  extents->unbounded.y + extents->unbounded.height);
+	    }
+	}
+    } else if (boxes->num_boxes) {
+	_cairo_boxes_init (&tmp);
+
+	assert (boxes->is_pixel_aligned);
+
+	status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+	tmp.chunks.next = &boxes->chunks;
+	tmp.num_boxes += boxes->num_boxes;
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+	tmp.chunks.next = NULL;
+	if (unlikely (status))
+	    goto error;
+    } else {
+empty:
+	box.p1.x = _cairo_fixed_from_int (extents->unbounded.x);
+	box.p2.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+
+	status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_INT_STATUS_SUCCESS);
+    }
+
+    /* Now intersect with the clip boxes */
+    if (extents->clip->num_boxes) {
+	_cairo_boxes_init_for_array (&tmp,
+				     extents->clip->boxes,
+				     extents->clip->num_boxes);
+	status = _cairo_boxes_intersect (&clear, &tmp, &clear);
+	if (unlikely (status))
+	    goto error;
+    }
+
+    status = compositor->fill_boxes (dst,
+				     CAIRO_OPERATOR_CLEAR,
+				     CAIRO_COLOR_TRANSPARENT,
+				     &clear);
+
+error:
+    _cairo_boxes_fini (&clear);
+    return status;
+}
+
+enum {
+    NEED_CLIP_REGION = 0x1,
+    NEED_CLIP_SURFACE = 0x2,
+    FORCE_CLIP_REGION = 0x4,
+};
+
+static cairo_bool_t
+need_bounded_clip (cairo_composite_rectangles_t *extents)
+{
+    unsigned int flags = 0;
+
+    if (extents->clip->num_boxes > 1 ||
+	extents->mask.width > extents->unbounded.width ||
+	extents->mask.height > extents->unbounded.height)
+    {
+	flags |= NEED_CLIP_REGION;
+    }
+
+    if (extents->clip->num_boxes > 1 ||
+	extents->mask.width > extents->bounded.width ||
+	extents->mask.height > extents->bounded.height)
+    {
+	flags |= FORCE_CLIP_REGION;
+    }
+
+    if (! _cairo_clip_is_region (extents->clip))
+	flags |= NEED_CLIP_SURFACE;
+
+    return flags;
+}
+
+static cairo_bool_t
+need_unbounded_clip (cairo_composite_rectangles_t *extents)
+{
+    unsigned int flags = 0;
+    if (! extents->is_bounded) {
+	flags |= NEED_CLIP_REGION;
+	if (! _cairo_clip_is_region (extents->clip))
+	    flags |= NEED_CLIP_SURFACE;
+    }
+    if (extents->clip->path != NULL)
+	flags |= NEED_CLIP_SURFACE;
+    return flags;
+}
+
+static cairo_status_t
+clip_and_composite (const cairo_traps_compositor_t *compositor,
+		    cairo_composite_rectangles_t *extents,
+		    draw_func_t		 draw_func,
+		    draw_func_t		 mask_func,
+		    void		*draw_closure,
+		    unsigned int need_clip)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_operator_t op = extents->op;
+    cairo_pattern_t *source = &extents->source_pattern.base;
+    cairo_surface_t *src;
+    int src_x, src_y;
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (reduce_alpha_op (extents)) {
+	op = CAIRO_OPERATOR_ADD;
+	source = NULL;
+    }
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	op = CAIRO_OPERATOR_DEST_OUT;
+	source = NULL;
+    }
+
+    compositor->acquire (dst);
+
+    if (need_clip & NEED_CLIP_REGION) {
+	const cairo_rectangle_int_t *limit;
+
+	if ((need_clip & FORCE_CLIP_REGION) == 0)
+	    limit = &extents->unbounded;
+	else
+	    limit = &extents->destination;
+
+	clip_region = _cairo_clip_get_region (extents->clip);
+	if (clip_region != NULL &&
+	    cairo_region_contains_rectangle (clip_region,
+					     limit) == CAIRO_REGION_OVERLAP_IN)
+	    clip_region = NULL;
+
+	if (clip_region != NULL) {
+	    status = compositor->set_clip_region (dst, clip_region);
+	    if (unlikely (status)) {
+		compositor->release (dst);
+		return status;
+	    }
+	}
+    }
+
+    if (extents->bounded.width == 0 || extents->bounded.height == 0)
+	goto skip;
+
+    src = compositor->pattern_to_surface (dst, source, FALSE,
+					  &extents->bounded,
+					  &extents->source_sample_area,
+					  &src_x, &src_y);
+    if (unlikely (status = src->status))
+	goto error;
+
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	status = clip_and_composite_source (compositor, dst,
+					    draw_func, mask_func, draw_closure,
+					    src, src_x, src_y,
+					    extents);
+    } else {
+	if (need_clip & NEED_CLIP_SURFACE) {
+	    if (extents->is_bounded) {
+		status = clip_and_composite_with_mask (compositor, extents,
+						       draw_func, mask_func,
+						       draw_closure,
+						       op, src, src_x, src_y);
+	    } else {
+		status = clip_and_composite_combine (compositor, extents,
+						     draw_func, draw_closure,
+						     op, src, src_x, src_y);
+	    }
+	} else {
+	    status = draw_func (compositor,
+				dst, draw_closure,
+				op, src, src_x, src_y,
+				0, 0,
+				&extents->bounded,
+				extents->clip);
+	}
+    }
+    cairo_surface_destroy (src);
+
+skip:
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) {
+	if (need_clip & NEED_CLIP_SURFACE)
+	    status = fixup_unbounded_with_mask (compositor, extents);
+	else
+	    status = fixup_unbounded (compositor, extents, NULL);
+    }
+
+error:
+    if (clip_region)
+	compositor->set_clip_region (dst, NULL);
+
+    compositor->release (dst);
+
+    return status;
+}
+
+/* meta-ops */
+
+typedef struct {
+    cairo_traps_t traps;
+    cairo_antialias_t antialias;
+} composite_traps_info_t;
+
+static cairo_int_status_t
+composite_traps (const cairo_traps_compositor_t *compositor,
+		 cairo_surface_t		*dst,
+		 void				 *closure,
+		 cairo_operator_t		 op,
+		 cairo_surface_t		*src,
+		 int src_x, int src_y,
+		 int dst_x, int dst_y,
+		 const cairo_rectangle_int_t *extents,
+		 cairo_clip_t			*clip)
+{
+    composite_traps_info_t *info = closure;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    return compositor->composite_traps (dst, op, src,
+					src_x - dst_x, src_y - dst_y,
+					dst_x, dst_y,
+					extents,
+					info->antialias, &info->traps);
+}
+
+typedef struct {
+    cairo_tristrip_t strip;
+    cairo_antialias_t antialias;
+} composite_tristrip_info_t;
+
+static cairo_int_status_t
+composite_tristrip (const cairo_traps_compositor_t *compositor,
+		    cairo_surface_t		*dst,
+		    void				 *closure,
+		    cairo_operator_t		 op,
+		    cairo_surface_t		*src,
+		    int src_x, int src_y,
+		    int dst_x, int dst_y,
+		    const cairo_rectangle_int_t *extents,
+		    cairo_clip_t			*clip)
+{
+    composite_tristrip_info_t *info = closure;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    return compositor->composite_tristrip (dst, op, src,
+					   src_x - dst_x, src_y - dst_y,
+					   dst_x, dst_y,
+					   extents,
+					   info->antialias, &info->strip);
+}
+
+static cairo_bool_t
+is_recording_pattern (const cairo_pattern_t *pattern)
+{
+    cairo_surface_t *surface;
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return FALSE;
+
+    surface = ((const cairo_surface_pattern_t *) pattern)->surface;
+    surface = _cairo_surface_get_source (surface, NULL);
+    return _cairo_surface_is_recording (surface);
+}
+
+static cairo_surface_t *
+recording_pattern_get_surface (const cairo_pattern_t *pattern)
+{
+    cairo_surface_t *surface;
+
+    surface = ((const cairo_surface_pattern_t *) pattern)->surface;
+    return _cairo_surface_get_source (surface, NULL);
+}
+
+static cairo_bool_t
+recording_pattern_contains_sample (const cairo_pattern_t *pattern,
+				   const cairo_rectangle_int_t *sample)
+{
+    cairo_recording_surface_t *surface;
+
+    if (! is_recording_pattern (pattern))
+	return FALSE;
+
+    if (pattern->extend == CAIRO_EXTEND_NONE)
+	return TRUE;
+
+    surface = (cairo_recording_surface_t *) recording_pattern_get_surface (pattern);
+    if (surface->unbounded)
+	return TRUE;
+
+    return _cairo_rectangle_contains_rectangle (&surface->extents, sample);
+}
+
+static cairo_bool_t
+op_reduces_to_source (cairo_composite_rectangles_t *extents)
+{
+    if (extents->op == CAIRO_OPERATOR_SOURCE)
+	return TRUE;
+
+    if (extents->surface->is_clear)
+	return extents->op == CAIRO_OPERATOR_OVER || extents->op == CAIRO_OPERATOR_ADD;
+
+    return FALSE;
+}
+
+static cairo_status_t
+composite_aligned_boxes (const cairo_traps_compositor_t *compositor,
+			 cairo_composite_rectangles_t *extents,
+			 cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    cairo_operator_t op = extents->op;
+    cairo_bool_t need_clip_mask = ! _cairo_clip_is_region (extents->clip);
+    cairo_bool_t op_is_source;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (need_clip_mask &&
+	(! extents->is_bounded || extents->op == CAIRO_OPERATOR_SOURCE))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    op_is_source = op_reduces_to_source (extents);
+
+    /* Are we just copying a recording surface? */
+    if (! need_clip_mask && op_is_source &&
+	recording_pattern_contains_sample (&extents->source_pattern.base,
+					   &extents->source_sample_area))
+    {
+	cairo_clip_t *recording_clip;
+	const cairo_pattern_t *source = &extents->source_pattern.base;
+	const cairo_matrix_t *m;
+	cairo_matrix_t matrix;
+
+	/* XXX could also do tiling repeat modes... */
+
+	/* first clear the area about to be overwritten */
+	if (! dst->is_clear) {
+	    status = compositor->acquire (dst);
+	    if (unlikely (status))
+		return status;
+
+	    status = compositor->fill_boxes (dst,
+					     CAIRO_OPERATOR_CLEAR,
+					     CAIRO_COLOR_TRANSPARENT,
+					     boxes);
+	    compositor->release (dst);
+	    if (unlikely (status))
+		return status;
+	}
+
+	m = &source->matrix;
+	if (_cairo_surface_has_device_transform (dst)) {
+	    cairo_matrix_multiply (&matrix,
+				   &source->matrix,
+				   &dst->device_transform);
+	    m = &matrix;
+	}
+
+	recording_clip = _cairo_clip_from_boxes (boxes);
+	status = _cairo_recording_surface_replay_with_clip (recording_pattern_get_surface (source),
+							    m, dst, recording_clip);
+	_cairo_clip_destroy (recording_clip);
+
+	return status;
+    }
+
+    status = compositor->acquire (dst);
+    if (unlikely (status))
+	return status;
+
+    if (! need_clip_mask &&
+	(op == CAIRO_OPERATOR_CLEAR ||
+	 extents->source_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID))
+    {
+	const cairo_color_t *color;
+
+	if (op == CAIRO_OPERATOR_CLEAR) {
+	    color = CAIRO_COLOR_TRANSPARENT;
+	} else {
+	    color = &((cairo_solid_pattern_t *) &extents->source_pattern)->color;
+	    if (op_is_source)
+		op = CAIRO_OPERATOR_SOURCE;
+	}
+
+	status = compositor->fill_boxes (dst, op, color, boxes);
+    }
+    else
+    {
+	cairo_surface_t *src, *mask = NULL;
+	cairo_pattern_t *source = &extents->source_pattern.base;
+	int src_x, src_y;
+	int mask_x = 0, mask_y = 0;
+
+	if (need_clip_mask) {
+	    mask = traps_get_clip_surface (compositor,
+					   extents, &extents->bounded);
+	    if (unlikely (mask->status))
+		return mask->status;
+
+	    mask_x = -extents->bounded.x;
+	    mask_y = -extents->bounded.y;
+
+	    if (op == CAIRO_OPERATOR_CLEAR) {
+		source = NULL;
+		op = CAIRO_OPERATOR_DEST_OUT;
+	    }
+	} else if (op_is_source)
+	    op = CAIRO_OPERATOR_SOURCE;
+
+	src = compositor->pattern_to_surface (dst, source, FALSE,
+					      &extents->bounded,
+					      &extents->source_sample_area,
+					      &src_x, &src_y);
+	if (likely (src->status == CAIRO_STATUS_SUCCESS)) {
+	    status = compositor->composite_boxes (dst, op, src, mask,
+						  src_x, src_y,
+						  mask_x, mask_y,
+						  0, 0,
+						  boxes, &extents->bounded);
+	    cairo_surface_destroy (src);
+	} else
+	    status = src->status;
+
+	cairo_surface_destroy (mask);
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded)
+	status = fixup_unbounded (compositor, extents, boxes);
+
+    compositor->release (dst);
+
+    return status;
+}
+
+static cairo_status_t
+upload_boxes (const cairo_traps_compositor_t *compositor,
+	      cairo_composite_rectangles_t *extents,
+	      cairo_boxes_t *boxes)
+{
+    cairo_surface_t *dst = extents->surface;
+    const cairo_pattern_t *source = &extents->source_pattern.base;
+    cairo_surface_t *src;
+    cairo_rectangle_int_t limit;
+    cairo_int_status_t status;
+    int tx, ty;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    src = _cairo_pattern_get_source((cairo_surface_pattern_t *)source,
+				    &limit);
+    if (!(src->type == CAIRO_SURFACE_TYPE_IMAGE || src->type == dst->type))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix, &tx, &ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Check that the data is entirely within the image */
+    if (extents->bounded.x + tx < limit.x || extents->bounded.y + ty < limit.y)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (extents->bounded.x + extents->bounded.width  + tx > limit.x + limit.width ||
+	extents->bounded.y + extents->bounded.height + ty > limit.y + limit.height)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    tx += limit.x;
+    ty += limit.y;
+
+    if (src->type == CAIRO_SURFACE_TYPE_IMAGE)
+	status = compositor->draw_image_boxes (dst,
+					       (cairo_image_surface_t *)src,
+					       boxes, tx, ty);
+    else
+	status = compositor->copy_boxes (dst, src, boxes, &extents->bounded,
+					 tx, ty);
+
+    return status;
+}
+
+static cairo_int_status_t
+trim_extents_to_traps (cairo_composite_rectangles_t *extents,
+		       cairo_traps_t *traps)
+{
+    cairo_box_t box;
+
+    _cairo_traps_extents (traps, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_int_status_t
+trim_extents_to_tristrip (cairo_composite_rectangles_t *extents,
+			  cairo_tristrip_t *strip)
+{
+    cairo_box_t box;
+
+    _cairo_tristrip_extents (strip, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_int_status_t
+trim_extents_to_boxes (cairo_composite_rectangles_t *extents,
+		       cairo_boxes_t *boxes)
+{
+    cairo_box_t box;
+
+    _cairo_boxes_extents (boxes, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_int_status_t
+boxes_for_traps (cairo_boxes_t *boxes,
+		 cairo_traps_t *traps,
+		 cairo_antialias_t antialias)
+{
+    int i, j;
+
+    /* first check that the traps are rectilinear */
+    if (antialias == CAIRO_ANTIALIAS_NONE) {
+	for (i = 0; i < traps->num_traps; i++) {
+	    const cairo_trapezoid_t *t = &traps->traps[i];
+	    if (_cairo_fixed_integer_round_down (t->left.p1.x) !=
+		_cairo_fixed_integer_round_down (t->left.p2.x) ||
+		_cairo_fixed_integer_round_down (t->right.p1.x) !=
+		_cairo_fixed_integer_round_down (t->right.p2.x))
+	    {
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+	    }
+	}
+    } else {
+	for (i = 0; i < traps->num_traps; i++) {
+	    const cairo_trapezoid_t *t = &traps->traps[i];
+	    if (t->left.p1.x != t->left.p2.x || t->right.p1.x != t->right.p2.x)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+	}
+    }
+
+    _cairo_boxes_init (boxes);
+
+    boxes->chunks.base  = (cairo_box_t *) traps->traps;
+    boxes->chunks.size  = traps->num_traps;
+
+    if (antialias != CAIRO_ANTIALIAS_NONE) {
+	for (i = j = 0; i < traps->num_traps; i++) {
+	    /* Note the traps and boxes alias so we need to take the local copies first. */
+	    cairo_fixed_t x1 = traps->traps[i].left.p1.x;
+	    cairo_fixed_t x2 = traps->traps[i].right.p1.x;
+	    cairo_fixed_t y1 = traps->traps[i].top;
+	    cairo_fixed_t y2 = traps->traps[i].bottom;
+
+	    if (x1 == x2 || y1 == y2)
+		    continue;
+
+	    boxes->chunks.base[j].p1.x = x1;
+	    boxes->chunks.base[j].p1.y = y1;
+	    boxes->chunks.base[j].p2.x = x2;
+	    boxes->chunks.base[j].p2.y = y2;
+	    j++;
+
+	    if (boxes->is_pixel_aligned) {
+		boxes->is_pixel_aligned =
+		    _cairo_fixed_is_integer (x1) && _cairo_fixed_is_integer (y1) &&
+		    _cairo_fixed_is_integer (x2) && _cairo_fixed_is_integer (y2);
+	    }
+	}
+    } else {
+	boxes->is_pixel_aligned = TRUE;
+
+	for (i = j = 0; i < traps->num_traps; i++) {
+	    /* Note the traps and boxes alias so we need to take the local copies first. */
+	    cairo_fixed_t x1 = traps->traps[i].left.p1.x;
+	    cairo_fixed_t x2 = traps->traps[i].right.p1.x;
+	    cairo_fixed_t y1 = traps->traps[i].top;
+	    cairo_fixed_t y2 = traps->traps[i].bottom;
+
+	    /* round down here to match Pixman's behavior when using traps. */
+	    boxes->chunks.base[j].p1.x = _cairo_fixed_round_down (x1);
+	    boxes->chunks.base[j].p1.y = _cairo_fixed_round_down (y1);
+	    boxes->chunks.base[j].p2.x = _cairo_fixed_round_down (x2);
+	    boxes->chunks.base[j].p2.y = _cairo_fixed_round_down (y2);
+	    j += (boxes->chunks.base[j].p1.x != boxes->chunks.base[j].p2.x &&
+		  boxes->chunks.base[j].p1.y != boxes->chunks.base[j].p2.y);
+	}
+    }
+    boxes->chunks.count = j;
+    boxes->num_boxes    = j;
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+clip_and_composite_boxes (const cairo_traps_compositor_t *compositor,
+			  cairo_composite_rectangles_t *extents,
+			  cairo_boxes_t *boxes);
+
+static cairo_status_t
+clip_and_composite_polygon (const cairo_traps_compositor_t *compositor,
+			    cairo_composite_rectangles_t *extents,
+			    cairo_polygon_t *polygon,
+			    cairo_antialias_t antialias,
+			    cairo_fill_rule_t fill_rule,
+			    cairo_bool_t curvy)
+{
+    composite_traps_info_t traps;
+    cairo_surface_t *dst = extents->surface;
+    cairo_bool_t clip_surface = ! _cairo_clip_is_region (extents->clip);
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (polygon->num_edges == 0) {
+	status = CAIRO_INT_STATUS_SUCCESS;
+
+	if (! extents->is_bounded) {
+	    cairo_region_t *clip_region = _cairo_clip_get_region (extents->clip);
+
+	    if (clip_region &&
+		cairo_region_contains_rectangle (clip_region,
+						 &extents->unbounded) == CAIRO_REGION_OVERLAP_IN)
+		clip_region = NULL;
+
+	    if (clip_region != NULL) {
+		status = compositor->set_clip_region (dst, clip_region);
+		if (unlikely (status))
+		    return status;
+	    }
+
+	    if (clip_surface)
+		status = fixup_unbounded_with_mask (compositor, extents);
+	    else
+		status = fixup_unbounded (compositor, extents, NULL);
+
+	    if (clip_region != NULL)
+		compositor->set_clip_region (dst, NULL);
+	}
+
+	return status;
+    }
+
+    if (extents->clip->path != NULL && extents->is_bounded) {
+	cairo_polygon_t clipper;
+	cairo_fill_rule_t clipper_fill_rule;
+	cairo_antialias_t clipper_antialias;
+
+	status = _cairo_clip_get_polygon (extents->clip,
+					  &clipper,
+					  &clipper_fill_rule,
+					  &clipper_antialias);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    if (clipper_antialias == antialias) {
+		status = _cairo_polygon_intersect (polygon, fill_rule,
+						   &clipper, clipper_fill_rule);
+		if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+		    cairo_clip_t * clip = _cairo_clip_copy_region (extents->clip);
+		    _cairo_clip_destroy (extents->clip);
+		    extents->clip = clip;
+
+		    fill_rule = CAIRO_FILL_RULE_WINDING;
+		}
+		_cairo_polygon_fini (&clipper);
+	    }
+	}
+    }
+
+    if (antialias == CAIRO_ANTIALIAS_NONE && curvy) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	status = _cairo_rasterise_polygon_to_boxes (polygon, fill_rule, &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    assert (boxes.is_pixel_aligned);
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	}
+	_cairo_boxes_fini (&boxes);
+	if ((status != CAIRO_INT_STATUS_UNSUPPORTED))
+	    return status;
+    }
+
+    _cairo_traps_init (&traps.traps);
+
+    if (antialias == CAIRO_ANTIALIAS_NONE && curvy) {
+	status = _cairo_rasterise_polygon_to_traps (polygon, fill_rule, antialias, &traps.traps);
+    } else {
+	status = _cairo_bentley_ottmann_tessellate_polygon (&traps.traps, polygon, fill_rule);
+    }
+    if (unlikely (status))
+	goto CLEANUP_TRAPS;
+
+    status = trim_extents_to_traps (extents, &traps.traps);
+    if (unlikely (status))
+	goto CLEANUP_TRAPS;
+
+    /* Use a fast path if the trapezoids consist of a set of boxes.  */
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (1) {
+	cairo_boxes_t boxes;
+
+	status = boxes_for_traps (&boxes, &traps.traps, antialias);
+	if (status == CAIRO_INT_STATUS_SUCCESS) {
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	    /* XXX need to reconstruct the traps! */
+	    assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
+	}
+    }
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	/* Otherwise render the trapezoids to a mask and composite in the usual
+	 * fashion.
+	 */
+	unsigned int flags = 0;
+
+	/* For unbounded operations, the X11 server will estimate the
+	 * affected rectangle and apply the operation to that. However,
+	 * there are cases where this is an overestimate (e.g. the
+	 * clip-fill-{eo,nz}-unbounded test).
+	 *
+	 * The clip will trim that overestimate to our expectations.
+	 */
+	if (! extents->is_bounded)
+	    flags |= FORCE_CLIP_REGION;
+
+	traps.antialias = antialias;
+	status = clip_and_composite (compositor, extents,
+				     composite_traps, NULL, &traps,
+				     need_unbounded_clip (extents) | flags);
+    }
+
+CLEANUP_TRAPS:
+    _cairo_traps_fini (&traps.traps);
+
+    return status;
+}
+
+struct composite_opacity_info {
+    const cairo_traps_compositor_t *compositor;
+    uint8_t op;
+    cairo_surface_t *dst;
+    cairo_surface_t *src;
+    int src_x, src_y;
+    double opacity;
+};
+
+static void composite_opacity(void *closure,
+			      int16_t x, int16_t y,
+			      int16_t w, int16_t h,
+			      uint16_t coverage)
+{
+    struct composite_opacity_info *info = closure;
+    const cairo_traps_compositor_t *compositor = info->compositor;
+    cairo_surface_t *mask;
+    int mask_x, mask_y;
+    cairo_color_t color;
+    cairo_solid_pattern_t solid;
+
+    _cairo_color_init_rgba (&color, 0, 0, 0, info->opacity * coverage);
+    _cairo_pattern_init_solid (&solid, &color);
+    mask = compositor->pattern_to_surface (info->dst, &solid.base, TRUE,
+					   &_cairo_unbounded_rectangle,
+					   &_cairo_unbounded_rectangle,
+					   &mask_x, &mask_y);
+    if (likely (mask->status == CAIRO_STATUS_SUCCESS)) {
+	if (info->src) {
+	    compositor->composite (info->dst, info->op, info->src, mask,
+				   x + info->src_x,  y + info->src_y,
+				   mask_x,           mask_y,
+				   x,                y,
+				   w,                h);
+	} else {
+	    compositor->composite (info->dst, info->op, mask, NULL,
+				   mask_x,            mask_y,
+				   0,                 0,
+				   x,                 y,
+				   w,                 h);
+	}
+    }
+
+    cairo_surface_destroy (mask);
+}
+
+
+static cairo_int_status_t
+composite_opacity_boxes (const cairo_traps_compositor_t *compositor,
+			 cairo_surface_t		*dst,
+			 void				*closure,
+			 cairo_operator_t		 op,
+			 cairo_surface_t		*src,
+			 int				 src_x,
+			 int				 src_y,
+			 int				 dst_x,
+			 int				 dst_y,
+			 const cairo_rectangle_int_t	*extents,
+			 cairo_clip_t			*clip)
+{
+    const cairo_solid_pattern_t *mask = closure;
+    struct composite_opacity_info info;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    info.compositor = compositor;
+    info.op = op;
+    info.dst = dst;
+
+    info.src = src;
+    info.src_x = src_x;
+    info.src_y = src_y;
+
+    info.opacity = mask->color.alpha / (double) 0xffff;
+
+    /* XXX for lots of boxes create a clip region for the fully opaque areas */
+    for (i = 0; i < clip->num_boxes; i++)
+	do_unaligned_box(composite_opacity, &info,
+			 &clip->boxes[i], dst_x, dst_y);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_boxes (const cairo_traps_compositor_t *compositor,
+		 cairo_surface_t		*dst,
+		 void				*closure,
+		 cairo_operator_t		 op,
+		 cairo_surface_t		*src,
+		 int				 src_x,
+		 int				 src_y,
+		 int				 dst_x,
+		 int				 dst_y,
+		 const cairo_rectangle_int_t	*extents,
+		 cairo_clip_t			*clip)
+{
+    cairo_traps_t traps;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = _cairo_traps_init_boxes (&traps, closure);
+    if (unlikely (status))
+	return status;
+
+    status = compositor->composite_traps (dst, op, src,
+					  src_x - dst_x, src_y - dst_y,
+					  dst_x, dst_y,
+					  extents,
+					  CAIRO_ANTIALIAS_DEFAULT, &traps);
+    _cairo_traps_fini (&traps);
+
+    return status;
+}
+
+static cairo_status_t
+clip_and_composite_boxes (const cairo_traps_compositor_t *compositor,
+			  cairo_composite_rectangles_t *extents,
+			  cairo_boxes_t *boxes)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (boxes->num_boxes == 0 && extents->is_bounded)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = trim_extents_to_boxes (extents, boxes);
+    if (unlikely (status))
+	return status;
+
+    if (boxes->is_pixel_aligned && extents->clip->path == NULL &&
+	extents->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE &&
+	(op_reduces_to_source (extents) ||
+	 (extents->op == CAIRO_OPERATOR_OVER &&
+	  (extents->source_pattern.surface.surface->content & CAIRO_CONTENT_ALPHA) == 0)))
+    {
+	status = upload_boxes (compositor, extents, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    /* Can we reduce drawing through a clip-mask to simply drawing the clip? */
+    if (extents->clip->path != NULL && extents->is_bounded) {
+	cairo_polygon_t polygon;
+	cairo_fill_rule_t fill_rule;
+	cairo_antialias_t antialias;
+	cairo_clip_t *clip;
+
+	clip = _cairo_clip_copy (extents->clip);
+	clip = _cairo_clip_intersect_boxes (clip, boxes);
+	if (_cairo_clip_is_all_clipped (clip))
+	    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+	status = _cairo_clip_get_polygon (clip, &polygon,
+					  &fill_rule, &antialias);
+	_cairo_clip_path_destroy (clip->path);
+	clip->path = NULL;
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    cairo_clip_t *saved_clip = extents->clip;
+	    extents->clip = clip;
+
+	    status = clip_and_composite_polygon (compositor, extents, &polygon,
+						 antialias, fill_rule, FALSE);
+
+	    clip = extents->clip;
+	    extents->clip = saved_clip;
+
+	    _cairo_polygon_fini (&polygon);
+	}
+	_cairo_clip_destroy (clip);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    /* Use a fast path if the boxes are pixel aligned (or nearly aligned!) */
+    if (boxes->is_pixel_aligned) {
+	status = composite_aligned_boxes (compositor, extents, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    return clip_and_composite (compositor, extents,
+			       composite_boxes, NULL, boxes,
+			       need_unbounded_clip (extents));
+}
+
+static cairo_int_status_t
+composite_traps_as_boxes (const cairo_traps_compositor_t *compositor,
+			  cairo_composite_rectangles_t *extents,
+			  composite_traps_info_t *info)
+{
+    cairo_boxes_t boxes;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (! _cairo_traps_to_boxes (&info->traps, info->antialias, &boxes))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return clip_and_composite_boxes (compositor, extents, &boxes);
+}
+
+static cairo_int_status_t
+clip_and_composite_traps (const cairo_traps_compositor_t *compositor,
+			  cairo_composite_rectangles_t *extents,
+			  composite_traps_info_t *info,
+			  unsigned flags)
+{
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = trim_extents_to_traps (extents, &info->traps);
+    if (unlikely (status != CAIRO_INT_STATUS_SUCCESS))
+	return status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if ((flags & FORCE_CLIP_REGION) == 0)
+	status = composite_traps_as_boxes (compositor, extents, info);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	/* For unbounded operations, the X11 server will estimate the
+	 * affected rectangle and apply the operation to that. However,
+	 * there are cases where this is an overestimate (e.g. the
+	 * clip-fill-{eo,nz}-unbounded test).
+	 *
+	 * The clip will trim that overestimate to our expectations.
+	 */
+	if (! extents->is_bounded)
+	    flags |= FORCE_CLIP_REGION;
+
+	status = clip_and_composite (compositor, extents,
+				     composite_traps, NULL, info,
+				     need_unbounded_clip (extents) | flags);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+clip_and_composite_tristrip (const cairo_traps_compositor_t *compositor,
+			     cairo_composite_rectangles_t *extents,
+			     composite_tristrip_info_t *info)
+{
+    cairo_int_status_t status;
+    unsigned int flags = 0;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = trim_extents_to_tristrip (extents, &info->strip);
+    if (unlikely (status != CAIRO_INT_STATUS_SUCCESS))
+	return status;
+
+    if (! extents->is_bounded)
+	flags |= FORCE_CLIP_REGION;
+
+    status = clip_and_composite (compositor, extents,
+				 composite_tristrip, NULL, info,
+				 need_unbounded_clip (extents) | flags);
+
+    return status;
+}
+
+struct composite_mask {
+    cairo_surface_t *mask;
+    int mask_x, mask_y;
+};
+
+static cairo_int_status_t
+composite_mask (const cairo_traps_compositor_t *compositor,
+		cairo_surface_t			*dst,
+		void				*closure,
+		cairo_operator_t		 op,
+		cairo_surface_t			*src,
+		int				 src_x,
+		int				 src_y,
+		int				 dst_x,
+		int				 dst_y,
+		const cairo_rectangle_int_t	*extents,
+		cairo_clip_t			*clip)
+{
+    struct composite_mask *data = closure;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (src != NULL) {
+	compositor->composite (dst, op, src, data->mask,
+			       extents->x + src_x, extents->y + src_y,
+			       extents->x + data->mask_x, extents->y + data->mask_y,
+			       extents->x - dst_x,  extents->y - dst_y,
+			       extents->width,      extents->height);
+    } else {
+	compositor->composite (dst, op, data->mask, NULL,
+			       extents->x + data->mask_x, extents->y + data->mask_y,
+			       0, 0,
+			       extents->x - dst_x,  extents->y - dst_y,
+			       extents->width,      extents->height);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct composite_box_info {
+    const cairo_traps_compositor_t *compositor;
+    cairo_surface_t *dst;
+    cairo_surface_t *src;
+    int src_x, src_y;
+    uint8_t op;
+};
+
+static void composite_box(void *closure,
+			  int16_t x, int16_t y,
+			  int16_t w, int16_t h,
+			  uint16_t coverage)
+{
+    struct composite_box_info *info = closure;
+    const cairo_traps_compositor_t *compositor = info->compositor;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (! CAIRO_ALPHA_SHORT_IS_OPAQUE (coverage)) {
+	cairo_surface_t *mask;
+	cairo_color_t color;
+	cairo_solid_pattern_t solid;
+	int mask_x, mask_y;
+
+	_cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double)0xffff);
+	_cairo_pattern_init_solid (&solid, &color);
+
+	mask = compositor->pattern_to_surface (info->dst, &solid.base, FALSE,
+					       &_cairo_unbounded_rectangle,
+					       &_cairo_unbounded_rectangle,
+					       &mask_x, &mask_y);
+
+	if (likely (mask->status == CAIRO_STATUS_SUCCESS)) {
+	    compositor->composite (info->dst, info->op, info->src, mask,
+				   x + info->src_x,  y + info->src_y,
+				   mask_x,           mask_y,
+				   x,                y,
+				   w,                h);
+	}
+
+	cairo_surface_destroy (mask);
+    } else {
+	compositor->composite (info->dst, info->op, info->src, NULL,
+			       x + info->src_x,  y + info->src_y,
+			       0,                0,
+			       x,                y,
+			       w,                h);
+    }
+}
+
+static cairo_int_status_t
+composite_mask_clip_boxes (const cairo_traps_compositor_t *compositor,
+			   cairo_surface_t		*dst,
+			   void				*closure,
+			   cairo_operator_t		 op,
+			   cairo_surface_t		*src,
+			   int				 src_x,
+			   int				 src_y,
+			   int				 dst_x,
+			   int				 dst_y,
+			   const cairo_rectangle_int_t	*extents,
+			   cairo_clip_t			*clip)
+{
+    struct composite_mask *data = closure;
+    struct composite_box_info info;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    info.compositor = compositor;
+    info.op = CAIRO_OPERATOR_SOURCE;
+    info.dst = dst;
+    info.src = data->mask;
+    info.src_x = data->mask_x;
+    info.src_y = data->mask_y;
+
+    info.src_x += dst_x;
+    info.src_y += dst_y;
+
+    for (i = 0; i < clip->num_boxes; i++)
+	do_unaligned_box(composite_box, &info, &clip->boxes[i], dst_x, dst_y);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_mask_clip (const cairo_traps_compositor_t *compositor,
+		     cairo_surface_t			*dst,
+		     void				*closure,
+		     cairo_operator_t			 op,
+		     cairo_surface_t			*src,
+		     int				 src_x,
+		     int				 src_y,
+		     int				 dst_x,
+		     int				 dst_y,
+		     const cairo_rectangle_int_t	*extents,
+		     cairo_clip_t			*clip)
+{
+    struct composite_mask *data = closure;
+    cairo_polygon_t polygon;
+    cairo_fill_rule_t fill_rule;
+    composite_traps_info_t info;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = _cairo_clip_get_polygon (clip, &polygon,
+				      &fill_rule, &info.antialias);
+    if (unlikely (status))
+	return status;
+
+    _cairo_traps_init (&info.traps);
+    status = _cairo_bentley_ottmann_tessellate_polygon (&info.traps,
+							&polygon,
+							fill_rule);
+    _cairo_polygon_fini (&polygon);
+    if (unlikely (status))
+	return status;
+
+    status = composite_traps (compositor, dst, &info,
+			      CAIRO_OPERATOR_SOURCE,
+			      data->mask,
+			      data->mask_x + dst_x, data->mask_y + dst_y,
+			      dst_x, dst_y,
+			      extents, NULL);
+    _cairo_traps_fini (&info.traps);
+
+    return status;
+}
+
+/* high-level compositor interface */
+
+static cairo_int_status_t
+_cairo_traps_compositor_paint (const cairo_compositor_t *_compositor,
+			       cairo_composite_rectangles_t *extents)
+{
+    cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t*)_compositor;
+    cairo_boxes_t boxes;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+     _cairo_clip_steal_boxes (extents->clip, &boxes);
+     status = clip_and_composite_boxes (compositor, extents, &boxes);
+     _cairo_clip_unsteal_boxes (extents->clip, &boxes);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_traps_compositor_mask (const cairo_compositor_t *_compositor,
+			      cairo_composite_rectangles_t *extents)
+{
+    const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t*)_compositor;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    if (extents->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID &&
+	extents->clip->path == NULL) {
+	status = clip_and_composite (compositor, extents,
+				     composite_opacity_boxes,
+				     composite_opacity_boxes,
+				     &extents->mask_pattern,
+				     need_unbounded_clip (extents));
+    } else {
+	struct composite_mask data;
+
+	data.mask = compositor->pattern_to_surface (extents->surface,
+						    &extents->mask_pattern.base,
+						    TRUE,
+						    &extents->bounded,
+						    &extents->mask_sample_area,
+						    &data.mask_x,
+						    &data.mask_y);
+	if (unlikely (data.mask->status))
+	    return data.mask->status;
+
+	status = clip_and_composite (compositor, extents,
+				     composite_mask,
+				     extents->clip->path ? composite_mask_clip : composite_mask_clip_boxes,
+				     &data, need_bounded_clip (extents));
+
+	cairo_surface_destroy (data.mask);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_traps_compositor_stroke (const cairo_compositor_t *_compositor,
+				cairo_composite_rectangles_t *extents,
+				const cairo_path_fixed_t *path,
+				const cairo_stroke_style_t *style,
+				const cairo_matrix_t	*ctm,
+				const cairo_matrix_t	*ctm_inverse,
+				double			 tolerance,
+				cairo_antialias_t	 antialias)
+{
+    const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t *)_compositor;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, extents->clip);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								style,
+								ctm,
+								antialias,
+								&boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED && 0 &&
+	_cairo_clip_is_region (extents->clip)) /* XXX */
+    {
+	composite_tristrip_info_t info;
+
+	info.antialias = antialias;
+	_cairo_tristrip_init_with_clip (&info.strip, extents->clip);
+	status = _cairo_path_fixed_stroke_to_tristrip (path, style,
+						       ctm, ctm_inverse,
+						       tolerance,
+						       &info.strip);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_tristrip (compositor, extents, &info);
+	_cairo_tristrip_fini (&info.strip);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED &&
+	path->has_curve_to && antialias == CAIRO_ANTIALIAS_NONE) {
+	cairo_polygon_t polygon;
+
+	_cairo_polygon_init_with_clip (&polygon, extents->clip);
+	status = _cairo_path_fixed_stroke_to_polygon (path, style,
+						      ctm, ctm_inverse,
+						      tolerance,
+						      &polygon);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_polygon (compositor,
+						 extents, &polygon,
+						 CAIRO_ANTIALIAS_NONE,
+						 CAIRO_FILL_RULE_WINDING,
+						 TRUE);
+	_cairo_polygon_fini (&polygon);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_int_status_t (*func) (const cairo_path_fixed_t	*path,
+				    const cairo_stroke_style_t	*stroke_style,
+				    const cairo_matrix_t	*ctm,
+				    const cairo_matrix_t	*ctm_inverse,
+				    double			 tolerance,
+				    cairo_traps_t		*traps);
+	composite_traps_info_t info;
+	unsigned flags;
+
+	if (antialias == CAIRO_ANTIALIAS_BEST || antialias == CAIRO_ANTIALIAS_GOOD) {
+	    func = _cairo_path_fixed_stroke_polygon_to_traps;
+	    flags = 0;
+	} else {
+	    func = _cairo_path_fixed_stroke_to_traps;
+	    flags = need_bounded_clip (extents) & ~NEED_CLIP_SURFACE;
+	}
+
+	info.antialias = antialias;
+	_cairo_traps_init_with_clip (&info.traps, extents->clip);
+	status = func (path, style, ctm, ctm_inverse, tolerance, &info.traps);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_traps (compositor, extents, &info, flags);
+	_cairo_traps_fini (&info.traps);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_traps_compositor_fill (const cairo_compositor_t *_compositor,
+			      cairo_composite_rectangles_t *extents,
+			      const cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		 fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias)
+{
+    const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t *)_compositor;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, extents->clip);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      antialias,
+							      &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = clip_and_composite_boxes (compositor, extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	cairo_polygon_t polygon;
+
+#if 0
+	if (extents->mask.width  > extents->unbounded.width ||
+	    extents->mask.height > extents->unbounded.height)
+	{
+	    cairo_box_t limits;
+	    _cairo_box_from_rectangle (&limits, &extents->unbounded);
+	    _cairo_polygon_init (&polygon, &limits, 1);
+	}
+	else
+	{
+	    _cairo_polygon_init (&polygon, NULL, 0);
+	}
+
+	status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = _cairo_polygon_intersect_with_boxes (&polygon, &fill_rule,
+							  extents->clip->boxes,
+							  extents->clip->num_boxes);
+	}
+#else
+	_cairo_polygon_init_with_clip (&polygon, extents->clip);
+	status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon);
+#endif
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = clip_and_composite_polygon (compositor, extents, &polygon,
+						 antialias, fill_rule, path->has_curve_to);
+	}
+	_cairo_polygon_fini (&polygon);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+composite_glyphs (const cairo_traps_compositor_t *compositor,
+		  cairo_surface_t	*dst,
+		  void *closure,
+		  cairo_operator_t	 op,
+		  cairo_surface_t	*src,
+		  int src_x, int src_y,
+		  int dst_x, int dst_y,
+		  const cairo_rectangle_int_t *extents,
+		  cairo_clip_t		*clip)
+{
+    cairo_composite_glyphs_info_t *info = closure;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (op == CAIRO_OPERATOR_ADD && (dst->content & CAIRO_CONTENT_COLOR) == 0)
+	info->use_mask = 0;
+
+    return compositor->composite_glyphs (dst, op, src,
+					 src_x, src_y,
+					 dst_x, dst_y,
+					 info);
+}
+
+static cairo_int_status_t
+_cairo_traps_compositor_glyphs (const cairo_compositor_t	*_compositor,
+				cairo_composite_rectangles_t	*extents,
+				cairo_scaled_font_t		*scaled_font,
+				cairo_glyph_t			*glyphs,
+				int				 num_glyphs,
+				cairo_bool_t			 overlap)
+{
+    const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t *)_compositor;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    status = compositor->check_composite (extents);
+    if (unlikely (status))
+	return status;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    status = compositor->check_composite_glyphs (extents,
+						 scaled_font, glyphs,
+						 &num_glyphs);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	cairo_composite_glyphs_info_t info;
+
+	info.font = scaled_font;
+	info.glyphs = glyphs;
+	info.num_glyphs = num_glyphs;
+	info.use_mask = overlap || ! extents->is_bounded;
+	info.extents = extents->bounded;
+
+	status = clip_and_composite (compositor, extents,
+				     composite_glyphs, NULL, &info,
+				     need_bounded_clip (extents) | FORCE_CLIP_REGION);
+    }
+    _cairo_scaled_font_thaw_cache (scaled_font);
+
+    return status;
+}
+
+void
+_cairo_traps_compositor_init (cairo_traps_compositor_t *compositor,
+			      const cairo_compositor_t  *delegate)
+{
+    compositor->base.delegate = delegate;
+
+    compositor->base.paint = _cairo_traps_compositor_paint;
+    compositor->base.mask = _cairo_traps_compositor_mask;
+    compositor->base.fill = _cairo_traps_compositor_fill;
+    compositor->base.stroke = _cairo_traps_compositor_stroke;
+    compositor->base.glyphs = _cairo_traps_compositor_glyphs;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-traps-private.h b/libs/cairo-1.16.0/src/cairo-traps-private.h
new file mode 100644
index 0000000..dcaf40d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-traps-private.h
@@ -0,0 +1,143 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_TRAPS_PRIVATE_H
+#define CAIRO_TRAPS_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-types-private.h"
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo_traps {
+    cairo_status_t status;
+
+    cairo_box_t bounds;
+    const cairo_box_t *limits;
+    int num_limits;
+
+    unsigned int maybe_region : 1; /* hint: 0 implies that it cannot be */
+    unsigned int has_intersections : 1;
+    unsigned int is_rectilinear : 1;
+    unsigned int is_rectangular : 1;
+
+    int num_traps;
+    int traps_size;
+    cairo_trapezoid_t *traps;
+    cairo_trapezoid_t  traps_embedded[16];
+};
+
+/* cairo-traps.c */
+cairo_private void
+_cairo_traps_init (cairo_traps_t *traps);
+
+cairo_private void
+_cairo_traps_init_with_clip (cairo_traps_t *traps,
+			     const cairo_clip_t *clip);
+
+cairo_private void
+_cairo_traps_limit (cairo_traps_t	*traps,
+		    const cairo_box_t	*boxes,
+		    int			 num_boxes);
+
+cairo_private cairo_status_t
+_cairo_traps_init_boxes (cairo_traps_t	    *traps,
+		         const cairo_boxes_t *boxes);
+
+cairo_private void
+_cairo_traps_clear (cairo_traps_t *traps);
+
+cairo_private void
+_cairo_traps_fini (cairo_traps_t *traps);
+
+#define _cairo_traps_status(T) (T)->status
+
+cairo_private void
+_cairo_traps_translate (cairo_traps_t *traps, int x, int y);
+
+cairo_private void
+_cairo_traps_tessellate_triangle_with_edges (cairo_traps_t *traps,
+					     const cairo_point_t t[3],
+					     const cairo_point_t edges[4]);
+
+cairo_private void
+_cairo_traps_tessellate_convex_quad (cairo_traps_t *traps,
+				     const cairo_point_t q[4]);
+
+cairo_private cairo_status_t
+_cairo_traps_tessellate_rectangle (cairo_traps_t *traps,
+				   const cairo_point_t *top_left,
+				   const cairo_point_t *bottom_right);
+
+cairo_private void
+_cairo_traps_add_trap (cairo_traps_t *traps,
+		       cairo_fixed_t top, cairo_fixed_t bottom,
+		       const cairo_line_t *left,
+		       const cairo_line_t *right);
+
+cairo_private int
+_cairo_traps_contain (const cairo_traps_t *traps,
+		      double x, double y);
+
+cairo_private void
+_cairo_traps_extents (const cairo_traps_t *traps,
+		      cairo_box_t         *extents);
+
+cairo_private cairo_int_status_t
+_cairo_traps_extract_region (cairo_traps_t  *traps,
+			     cairo_antialias_t antialias,
+			     cairo_region_t **region);
+
+cairo_private cairo_bool_t
+_cairo_traps_to_boxes (cairo_traps_t *traps,
+		       cairo_antialias_t antialias,
+		       cairo_boxes_t *boxes);
+
+cairo_private cairo_status_t
+_cairo_traps_path (const cairo_traps_t *traps,
+		   cairo_path_fixed_t  *path);
+
+cairo_private cairo_int_status_t
+_cairo_rasterise_polygon_to_traps (cairo_polygon_t			*polygon,
+				   cairo_fill_rule_t			 fill_rule,
+				   cairo_antialias_t			 antialias,
+				   cairo_traps_t *traps);
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_TRAPS_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-traps.c b/libs/cairo-1.16.0/src/cairo-traps.c
new file mode 100644
index 0000000..1b74848
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-traps.c
@@ -0,0 +1,1123 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/*
+ * Copyright © 2002 Keith Packard
+ * Copyright © 2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *	Keith R. Packard <keithp@keithp.com>
+ *	Carl D. Worth <cworth@cworth.org>
+ *
+ * 2002-07-15: Converted from XRenderCompositeDoublePoly to #cairo_trap_t. Carl D. Worth
+ */
+
+#include "cairoint.h"
+
+#include "cairo-box-inline.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-line-private.h"
+#include "cairo-region-private.h"
+#include "cairo-slope-private.h"
+#include "cairo-traps-private.h"
+#include "cairo-spans-private.h"
+
+/* private functions */
+
+void
+_cairo_traps_init (cairo_traps_t *traps)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (traps, sizeof (cairo_traps_t)));
+
+    traps->status = CAIRO_STATUS_SUCCESS;
+
+    traps->maybe_region = 1;
+    traps->is_rectilinear = 0;
+    traps->is_rectangular = 0;
+
+    traps->num_traps = 0;
+
+    traps->traps_size = ARRAY_LENGTH (traps->traps_embedded);
+    traps->traps = traps->traps_embedded;
+
+    traps->num_limits = 0;
+    traps->has_intersections = FALSE;
+}
+
+void
+_cairo_traps_limit (cairo_traps_t	*traps,
+		    const cairo_box_t	*limits,
+		    int			 num_limits)
+{
+    int i;
+
+    traps->limits = limits;
+    traps->num_limits = num_limits;
+
+    traps->bounds = limits[0];
+    for (i = 1; i < num_limits; i++)
+	_cairo_box_add_box (&traps->bounds, &limits[i]);
+}
+
+void
+_cairo_traps_init_with_clip (cairo_traps_t *traps,
+			     const cairo_clip_t *clip)
+{
+    _cairo_traps_init (traps);
+    if (clip)
+	_cairo_traps_limit (traps, clip->boxes, clip->num_boxes);
+}
+
+void
+_cairo_traps_clear (cairo_traps_t *traps)
+{
+    traps->status = CAIRO_STATUS_SUCCESS;
+
+    traps->maybe_region = 1;
+    traps->is_rectilinear = 0;
+    traps->is_rectangular = 0;
+
+    traps->num_traps = 0;
+    traps->has_intersections = FALSE;
+}
+
+void
+_cairo_traps_fini (cairo_traps_t *traps)
+{
+    if (traps->traps != traps->traps_embedded)
+	free (traps->traps);
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (traps, sizeof (cairo_traps_t)));
+}
+
+/* make room for at least one more trap */
+static cairo_bool_t
+_cairo_traps_grow (cairo_traps_t *traps)
+{
+    cairo_trapezoid_t *new_traps;
+    int new_size = 4 * traps->traps_size;
+
+    if (CAIRO_INJECT_FAULT ()) {
+	traps->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return FALSE;
+    }
+
+    if (traps->traps == traps->traps_embedded) {
+	new_traps = _cairo_malloc_ab (new_size, sizeof (cairo_trapezoid_t));
+	if (new_traps != NULL)
+	    memcpy (new_traps, traps->traps, sizeof (traps->traps_embedded));
+    } else {
+	new_traps = _cairo_realloc_ab (traps->traps,
+	                               new_size, sizeof (cairo_trapezoid_t));
+    }
+
+    if (unlikely (new_traps == NULL)) {
+	traps->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return FALSE;
+    }
+
+    traps->traps = new_traps;
+    traps->traps_size = new_size;
+    return TRUE;
+}
+
+void
+_cairo_traps_add_trap (cairo_traps_t *traps,
+		       cairo_fixed_t top, cairo_fixed_t bottom,
+		       const cairo_line_t *left,
+		       const cairo_line_t *right)
+{
+    cairo_trapezoid_t *trap;
+
+    assert (left->p1.y != left->p2.y);
+    assert (right->p1.y != right->p2.y);
+    assert (bottom > top);
+
+    if (unlikely (traps->num_traps == traps->traps_size)) {
+	if (unlikely (! _cairo_traps_grow (traps)))
+	    return;
+    }
+
+    trap = &traps->traps[traps->num_traps++];
+    trap->top = top;
+    trap->bottom = bottom;
+    trap->left = *left;
+    trap->right = *right;
+}
+
+static void
+_cairo_traps_add_clipped_trap (cairo_traps_t *traps,
+			       cairo_fixed_t _top, cairo_fixed_t _bottom,
+			       const cairo_line_t *_left,
+			       const cairo_line_t *_right)
+{
+    /* Note: With the goofy trapezoid specification, (where an
+     * arbitrary two points on the lines can specified for the left
+     * and right edges), these limit checks would not work in
+     * general. For example, one can imagine a trapezoid entirely
+     * within the limits, but with two points used to specify the left
+     * edge entirely to the right of the limits.  Fortunately, for our
+     * purposes, cairo will never generate such a crazy
+     * trapezoid. Instead, cairo always uses for its points the
+     * extreme positions of the edge that are visible on at least some
+     * trapezoid. With this constraint, it's impossible for both
+     * points to be outside the limits while the relevant edge is
+     * entirely inside the limits.
+     */
+    if (traps->num_limits) {
+	const cairo_box_t *b = &traps->bounds;
+	cairo_fixed_t top = _top, bottom = _bottom;
+	cairo_line_t left = *_left, right = *_right;
+
+	/* Trivially reject if trapezoid is entirely to the right or
+	 * to the left of the limits. */
+	if (left.p1.x >= b->p2.x && left.p2.x >= b->p2.x)
+	    return;
+
+	if (right.p1.x <= b->p1.x && right.p2.x <= b->p1.x)
+	    return;
+
+	/* And reject if the trapezoid is entirely above or below */
+	if (top >= b->p2.y || bottom <= b->p1.y)
+	    return;
+
+	/* Otherwise, clip the trapezoid to the limits. We only clip
+	 * where an edge is entirely outside the limits. If we wanted
+	 * to be more clever, we could handle cases where a trapezoid
+	 * edge intersects the edge of the limits, but that would
+	 * require slicing this trapezoid into multiple trapezoids,
+	 * and I'm not sure the effort would be worth it. */
+	if (top < b->p1.y)
+	    top = b->p1.y;
+
+	if (bottom > b->p2.y)
+	    bottom = b->p2.y;
+
+	if (left.p1.x <= b->p1.x && left.p2.x <= b->p1.x)
+	    left.p1.x = left.p2.x = b->p1.x;
+
+	if (right.p1.x >= b->p2.x && right.p2.x >= b->p2.x)
+	    right.p1.x = right.p2.x = b->p2.x;
+
+	/* Trivial discards for empty trapezoids that are likely to
+	 * be produced by our tessellators (most notably convex_quad
+	 * when given a simple rectangle).
+	 */
+	if (top >= bottom)
+	    return;
+
+	/* cheap colinearity check */
+	if (right.p1.x <= left.p1.x && right.p1.y == left.p1.y &&
+	    right.p2.x <= left.p2.x && right.p2.y == left.p2.y)
+	    return;
+
+	_cairo_traps_add_trap (traps, top, bottom, &left, &right);
+    } else
+	_cairo_traps_add_trap (traps, _top, _bottom, _left, _right);
+}
+
+static int
+_compare_point_fixed_by_y (const void *av, const void *bv)
+{
+    const cairo_point_t	*a = av, *b = bv;
+    int ret = a->y - b->y;
+    if (ret == 0)
+	ret = a->x - b->x;
+    return ret;
+}
+
+void
+_cairo_traps_tessellate_convex_quad (cairo_traps_t *traps,
+				     const cairo_point_t q[4])
+{
+    int a, b, c, d;
+    int i;
+    cairo_slope_t ab, ad;
+    cairo_bool_t b_left_of_d;
+    cairo_line_t left;
+    cairo_line_t right;
+
+    /* Choose a as a point with minimal y */
+    a = 0;
+    for (i = 1; i < 4; i++)
+	if (_compare_point_fixed_by_y (&q[i], &q[a]) < 0)
+	    a = i;
+
+    /* b and d are adjacent to a, while c is opposite */
+    b = (a + 1) % 4;
+    c = (a + 2) % 4;
+    d = (a + 3) % 4;
+
+    /* Choose between b and d so that b.y is less than d.y */
+    if (_compare_point_fixed_by_y (&q[d], &q[b]) < 0) {
+	b = (a + 3) % 4;
+	d = (a + 1) % 4;
+    }
+
+    /* Without freedom left to choose anything else, we have four
+     * cases to tessellate.
+     *
+     * First, we have to determine the Y-axis sort of the four
+     * vertices, (either abcd or abdc). After that we need to detemine
+     * which edges will be "left" and which will be "right" in the
+     * resulting trapezoids. This can be determined by computing a
+     * slope comparison of ab and ad to determine if b is left of d or
+     * not.
+     *
+     * Note that "left of" here is in the sense of which edges should
+     * be the left vs. right edges of the trapezoid. In particular, b
+     * left of d does *not* mean that b.x is less than d.x.
+     *
+     * This should hopefully be made clear in the lame ASCII art
+     * below. Since the same slope comparison is used in all cases, we
+     * compute it before testing for the Y-value sort. */
+
+    /* Note: If a == b then the ab slope doesn't give us any
+     * information. In that case, we can replace it with the ac (or
+     * equivalenly the bc) slope which gives us exactly the same
+     * information we need. At worst the names of the identifiers ab
+     * and b_left_of_d are inaccurate in this case, (would be ac, and
+     * c_left_of_d). */
+    if (q[a].x == q[b].x && q[a].y == q[b].y)
+	_cairo_slope_init (&ab, &q[a], &q[c]);
+    else
+	_cairo_slope_init (&ab, &q[a], &q[b]);
+
+    _cairo_slope_init (&ad, &q[a], &q[d]);
+
+    b_left_of_d = _cairo_slope_compare (&ab, &ad) > 0;
+
+    if (q[c].y <= q[d].y) {
+	if (b_left_of_d) {
+	    /* Y-sort is abcd and b is left of d, (slope(ab) > slope (ad))
+	     *
+	     *                      top bot left right
+	     *        _a  a  a
+	     *      / /  /|  |\      a.y b.y  ab   ad
+	     *     b /  b |  b \
+	     *    / /   | |   \ \    b.y c.y  bc   ad
+	     *   c /    c |    c \
+	     *  | /      \|     \ \  c.y d.y  cd   ad
+	     *  d         d       d
+	     */
+	    left.p1  = q[a]; left.p2  = q[b];
+	    right.p1 = q[a]; right.p2 = q[d];
+	    _cairo_traps_add_clipped_trap (traps, q[a].y, q[b].y, &left, &right);
+	    left.p1  = q[b]; left.p2  = q[c];
+	    _cairo_traps_add_clipped_trap (traps, q[b].y, q[c].y, &left, &right);
+	    left.p1  = q[c]; left.p2  = q[d];
+	    _cairo_traps_add_clipped_trap (traps, q[c].y, q[d].y, &left, &right);
+	} else {
+	    /* Y-sort is abcd and b is right of d, (slope(ab) <= slope (ad))
+	     *
+	     *       a  a  a_
+	     *      /|  |\  \ \     a.y b.y  ad  ab
+	     *     / b  | b  \ b
+	     *    / /   | |   \ \   b.y c.y  ad  bc
+	     *   / c    | c    \ c
+	     *  / /     |/      \ | c.y d.y  ad  cd
+	     *  d       d         d
+	     */
+	    left.p1  = q[a]; left.p2  = q[d];
+	    right.p1 = q[a]; right.p2 = q[b];
+	    _cairo_traps_add_clipped_trap (traps, q[a].y, q[b].y, &left, &right);
+	    right.p1 = q[b]; right.p2 = q[c];
+	    _cairo_traps_add_clipped_trap (traps, q[b].y, q[c].y, &left, &right);
+	    right.p1 = q[c]; right.p2 = q[d];
+	    _cairo_traps_add_clipped_trap (traps, q[c].y, q[d].y, &left, &right);
+	}
+    } else {
+	if (b_left_of_d) {
+	    /* Y-sort is abdc and b is left of d, (slope (ab) > slope (ad))
+	     *
+	     *        a   a     a
+	     *       //  / \    |\     a.y b.y  ab  ad
+	     *     /b/  b   \   b \
+	     *    / /    \   \   \ \   b.y d.y  bc  ad
+	     *   /d/      \   d   \ d
+	     *  //         \ /     \|  d.y c.y  bc  dc
+	     *  c           c       c
+	     */
+	    left.p1  = q[a]; left.p2  = q[b];
+	    right.p1 = q[a]; right.p2 = q[d];
+	    _cairo_traps_add_clipped_trap (traps, q[a].y, q[b].y, &left, &right);
+	    left.p1  = q[b]; left.p2  = q[c];
+	    _cairo_traps_add_clipped_trap (traps, q[b].y, q[d].y, &left, &right);
+	    right.p1 = q[d]; right.p2 = q[c];
+	    _cairo_traps_add_clipped_trap (traps, q[d].y, q[c].y, &left, &right);
+	} else {
+	    /* Y-sort is abdc and b is right of d, (slope (ab) <= slope (ad))
+	     *
+	     *      a     a   a
+	     *     /|    / \  \\       a.y b.y  ad  ab
+	     *    / b   /   b  \b\
+	     *   / /   /   /    \ \    b.y d.y  ad  bc
+	     *  d /   d   /	 \d\
+	     *  |/     \ /         \\  d.y c.y  dc  bc
+	     *  c       c	   c
+	     */
+	    left.p1  = q[a]; left.p2  = q[d];
+	    right.p1 = q[a]; right.p2 = q[b];
+	    _cairo_traps_add_clipped_trap (traps, q[a].y, q[b].y, &left, &right);
+	    right.p1 = q[b]; right.p2 = q[c];
+	    _cairo_traps_add_clipped_trap (traps, q[b].y, q[d].y, &left, &right);
+	    left.p1  = q[d]; left.p2  = q[c];
+	    _cairo_traps_add_clipped_trap (traps, q[d].y, q[c].y, &left, &right);
+	}
+    }
+}
+
+static void add_tri (cairo_traps_t *traps,
+		     int y1, int y2,
+		     const cairo_line_t *left,
+		     const cairo_line_t *right)
+{
+    if (y2 < y1) {
+	int tmp = y1;
+	y1 = y2;
+	y2 = tmp;
+    }
+
+    if (cairo_lines_compare_at_y (left, right, y1) > 0) {
+	const cairo_line_t *tmp = left;
+	left = right;
+	right = tmp;
+    }
+
+    _cairo_traps_add_clipped_trap (traps, y1, y2, left, right);
+}
+
+void
+_cairo_traps_tessellate_triangle_with_edges (cairo_traps_t *traps,
+					     const cairo_point_t t[3],
+					     const cairo_point_t edges[4])
+{
+    cairo_line_t lines[3];
+
+    if (edges[0].y <= edges[1].y) {
+	    lines[0].p1 = edges[0];
+	    lines[0].p2 = edges[1];
+    } else {
+	    lines[0].p1 = edges[1];
+	    lines[0].p2 = edges[0];
+    }
+
+    if (edges[2].y <= edges[3].y) {
+	    lines[1].p1 = edges[2];
+	    lines[1].p2 = edges[3];
+    } else {
+	    lines[1].p1 = edges[3];
+	    lines[1].p2 = edges[2];
+    }
+
+    if (t[1].y == t[2].y) {
+	add_tri (traps, t[0].y, t[1].y, &lines[0], &lines[1]);
+	return;
+    }
+
+    if (t[1].y <= t[2].y) {
+	    lines[2].p1 = t[1];
+	    lines[2].p2 = t[2];
+    } else {
+	    lines[2].p1 = t[2];
+	    lines[2].p2 = t[1];
+    }
+
+    if (((t[1].y - t[0].y) < 0) ^ ((t[2].y - t[0].y) < 0)) {
+	add_tri (traps, t[0].y, t[1].y, &lines[0], &lines[2]);
+	add_tri (traps, t[0].y, t[2].y, &lines[1], &lines[2]);
+    } else if (abs(t[1].y - t[0].y) < abs(t[2].y - t[0].y)) {
+	add_tri (traps, t[0].y, t[1].y, &lines[0], &lines[1]);
+	add_tri (traps, t[1].y, t[2].y, &lines[2], &lines[1]);
+    } else {
+	add_tri (traps, t[0].y, t[2].y, &lines[1], &lines[0]);
+	add_tri (traps, t[1].y, t[2].y, &lines[2], &lines[0]);
+    }
+}
+
+/**
+ * _cairo_traps_init_boxes:
+ * @traps: a #cairo_traps_t
+ * @box: an array box that will each be converted to a single trapezoid
+ *       to store in @traps.
+ *
+ * Initializes a #cairo_traps_t to contain an array of rectangular
+ * trapezoids.
+ **/
+cairo_status_t
+_cairo_traps_init_boxes (cairo_traps_t	    *traps,
+		         const cairo_boxes_t *boxes)
+{
+    cairo_trapezoid_t *trap;
+    const struct _cairo_boxes_chunk *chunk;
+
+    _cairo_traps_init (traps);
+
+    while (traps->traps_size < boxes->num_boxes) {
+	if (unlikely (! _cairo_traps_grow (traps))) {
+	    _cairo_traps_fini (traps);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    traps->num_traps = boxes->num_boxes;
+    traps->is_rectilinear = TRUE;
+    traps->is_rectangular = TRUE;
+    traps->maybe_region = boxes->is_pixel_aligned;
+
+    trap = &traps->traps[0];
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box;
+	int i;
+
+	box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    trap->top    = box->p1.y;
+	    trap->bottom = box->p2.y;
+
+	    trap->left.p1   = box->p1;
+	    trap->left.p2.x = box->p1.x;
+	    trap->left.p2.y = box->p2.y;
+
+	    trap->right.p1.x = box->p2.x;
+	    trap->right.p1.y = box->p1.y;
+	    trap->right.p2   = box->p2;
+
+	    box++, trap++;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_traps_tessellate_rectangle (cairo_traps_t *traps,
+				   const cairo_point_t *top_left,
+				   const cairo_point_t *bottom_right)
+{
+    cairo_line_t left;
+    cairo_line_t right;
+    cairo_fixed_t top, bottom;
+
+    if (top_left->y == bottom_right->y)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (top_left->x == bottom_right->x)
+	return CAIRO_STATUS_SUCCESS;
+
+     left.p1.x =  left.p2.x = top_left->x;
+     left.p1.y = right.p1.y = top_left->y;
+    right.p1.x = right.p2.x = bottom_right->x;
+     left.p2.y = right.p2.y = bottom_right->y;
+
+     top = top_left->y;
+     bottom = bottom_right->y;
+
+    if (traps->num_limits) {
+	cairo_bool_t reversed;
+	int n;
+
+	if (top >= traps->bounds.p2.y || bottom <= traps->bounds.p1.y)
+	    return CAIRO_STATUS_SUCCESS;
+
+	/* support counter-clockwise winding for rectangular tessellation */
+	reversed = top_left->x > bottom_right->x;
+	if (reversed) {
+	    right.p1.x = right.p2.x = top_left->x;
+	    left.p1.x = left.p2.x = bottom_right->x;
+	}
+
+	if (left.p1.x >= traps->bounds.p2.x || right.p1.x <= traps->bounds.p1.x)
+	    return CAIRO_STATUS_SUCCESS;
+
+	for (n = 0; n < traps->num_limits; n++) {
+	    const cairo_box_t *limits = &traps->limits[n];
+	    cairo_line_t _left, _right;
+	    cairo_fixed_t _top, _bottom;
+
+	    if (top >= limits->p2.y)
+		continue;
+	    if (bottom <= limits->p1.y)
+		continue;
+
+	    /* Trivially reject if trapezoid is entirely to the right or
+	     * to the left of the limits. */
+	    if (left.p1.x >= limits->p2.x)
+		continue;
+	    if (right.p1.x <= limits->p1.x)
+		continue;
+
+	    /* Otherwise, clip the trapezoid to the limits. */
+	    _top = top;
+	    if (_top < limits->p1.y)
+		_top = limits->p1.y;
+
+	    _bottom = bottom;
+	    if (_bottom > limits->p2.y)
+		_bottom = limits->p2.y;
+
+	    if (_bottom <= _top)
+		continue;
+
+	    _left = left;
+	    if (_left.p1.x < limits->p1.x) {
+		_left.p1.x = limits->p1.x;
+		_left.p1.y = limits->p1.y;
+		_left.p2.x = limits->p1.x;
+		_left.p2.y = limits->p2.y;
+	    }
+
+	    _right = right;
+	    if (_right.p1.x > limits->p2.x) {
+		_right.p1.x = limits->p2.x;
+		_right.p1.y = limits->p1.y;
+		_right.p2.x = limits->p2.x;
+		_right.p2.y = limits->p2.y;
+	    }
+
+	    if (left.p1.x >= right.p1.x)
+		continue;
+
+	    if (reversed)
+		_cairo_traps_add_trap (traps, _top, _bottom, &_right, &_left);
+	    else
+		_cairo_traps_add_trap (traps, _top, _bottom, &_left, &_right);
+	}
+    } else {
+	_cairo_traps_add_trap (traps, top, bottom, &left, &right);
+    }
+
+    return traps->status;
+}
+
+void
+_cairo_traps_translate (cairo_traps_t *traps, int x, int y)
+{
+    cairo_fixed_t xoff, yoff;
+    cairo_trapezoid_t *t;
+    int i;
+
+    /* Ugh. The cairo_composite/(Render) interface doesn't allow
+       an offset for the trapezoids. Need to manually shift all
+       the coordinates to align with the offset origin of the
+       intermediate surface. */
+
+    xoff = _cairo_fixed_from_int (x);
+    yoff = _cairo_fixed_from_int (y);
+
+    for (i = 0, t = traps->traps; i < traps->num_traps; i++, t++) {
+	t->top += yoff;
+	t->bottom += yoff;
+	t->left.p1.x += xoff;
+	t->left.p1.y += yoff;
+	t->left.p2.x += xoff;
+	t->left.p2.y += yoff;
+	t->right.p1.x += xoff;
+	t->right.p1.y += yoff;
+	t->right.p2.x += xoff;
+	t->right.p2.y += yoff;
+    }
+}
+
+void
+_cairo_trapezoid_array_translate_and_scale (cairo_trapezoid_t *offset_traps,
+                                            cairo_trapezoid_t *src_traps,
+                                            int num_traps,
+                                            double tx, double ty,
+                                            double sx, double sy)
+{
+    int i;
+    cairo_fixed_t xoff = _cairo_fixed_from_double (tx);
+    cairo_fixed_t yoff = _cairo_fixed_from_double (ty);
+
+    if (sx == 1.0 && sy == 1.0) {
+        for (i = 0; i < num_traps; i++) {
+            offset_traps[i].top = src_traps[i].top + yoff;
+            offset_traps[i].bottom = src_traps[i].bottom + yoff;
+            offset_traps[i].left.p1.x = src_traps[i].left.p1.x + xoff;
+            offset_traps[i].left.p1.y = src_traps[i].left.p1.y + yoff;
+            offset_traps[i].left.p2.x = src_traps[i].left.p2.x + xoff;
+            offset_traps[i].left.p2.y = src_traps[i].left.p2.y + yoff;
+            offset_traps[i].right.p1.x = src_traps[i].right.p1.x + xoff;
+            offset_traps[i].right.p1.y = src_traps[i].right.p1.y + yoff;
+            offset_traps[i].right.p2.x = src_traps[i].right.p2.x + xoff;
+            offset_traps[i].right.p2.y = src_traps[i].right.p2.y + yoff;
+        }
+    } else {
+        cairo_fixed_t xsc = _cairo_fixed_from_double (sx);
+        cairo_fixed_t ysc = _cairo_fixed_from_double (sy);
+
+        for (i = 0; i < num_traps; i++) {
+            offset_traps[i].top = _cairo_fixed_mul (src_traps[i].top + yoff, ysc);
+            offset_traps[i].bottom = _cairo_fixed_mul (src_traps[i].bottom + yoff, ysc);
+            offset_traps[i].left.p1.x = _cairo_fixed_mul (src_traps[i].left.p1.x + xoff, xsc);
+            offset_traps[i].left.p1.y = _cairo_fixed_mul (src_traps[i].left.p1.y + yoff, ysc);
+            offset_traps[i].left.p2.x = _cairo_fixed_mul (src_traps[i].left.p2.x + xoff, xsc);
+            offset_traps[i].left.p2.y = _cairo_fixed_mul (src_traps[i].left.p2.y + yoff, ysc);
+            offset_traps[i].right.p1.x = _cairo_fixed_mul (src_traps[i].right.p1.x + xoff, xsc);
+            offset_traps[i].right.p1.y = _cairo_fixed_mul (src_traps[i].right.p1.y + yoff, ysc);
+            offset_traps[i].right.p2.x = _cairo_fixed_mul (src_traps[i].right.p2.x + xoff, xsc);
+            offset_traps[i].right.p2.y = _cairo_fixed_mul (src_traps[i].right.p2.y + yoff, ysc);
+        }
+    }
+}
+
+static cairo_bool_t
+_cairo_trap_contains (cairo_trapezoid_t *t, cairo_point_t *pt)
+{
+    cairo_slope_t slope_left, slope_pt, slope_right;
+
+    if (t->top > pt->y)
+	return FALSE;
+    if (t->bottom < pt->y)
+	return FALSE;
+
+    _cairo_slope_init (&slope_left, &t->left.p1, &t->left.p2);
+    _cairo_slope_init (&slope_pt, &t->left.p1, pt);
+
+    if (_cairo_slope_compare (&slope_left, &slope_pt) < 0)
+	return FALSE;
+
+    _cairo_slope_init (&slope_right, &t->right.p1, &t->right.p2);
+    _cairo_slope_init (&slope_pt, &t->right.p1, pt);
+
+    if (_cairo_slope_compare (&slope_pt, &slope_right) < 0)
+	return FALSE;
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_traps_contain (const cairo_traps_t *traps,
+		      double x, double y)
+{
+    int i;
+    cairo_point_t point;
+
+    point.x = _cairo_fixed_from_double (x);
+    point.y = _cairo_fixed_from_double (y);
+
+    for (i = 0; i < traps->num_traps; i++) {
+	if (_cairo_trap_contains (&traps->traps[i], &point))
+	    return TRUE;
+    }
+
+    return FALSE;
+}
+
+static cairo_fixed_t
+_line_compute_intersection_x_for_y (const cairo_line_t *line,
+				    cairo_fixed_t y)
+{
+    return _cairo_edge_compute_intersection_x_for_y (&line->p1, &line->p2, y);
+}
+
+void
+_cairo_traps_extents (const cairo_traps_t *traps,
+		      cairo_box_t *extents)
+{
+    int i;
+
+    if (traps->num_traps == 0) {
+	extents->p1.x = extents->p1.y = 0;
+	extents->p2.x = extents->p2.y = 0;
+	return;
+    }
+
+    extents->p1.x = extents->p1.y = INT32_MAX;
+    extents->p2.x = extents->p2.y = INT32_MIN;
+
+    for (i = 0; i < traps->num_traps; i++) {
+	const cairo_trapezoid_t *trap =  &traps->traps[i];
+
+	if (trap->top < extents->p1.y)
+	    extents->p1.y = trap->top;
+	if (trap->bottom > extents->p2.y)
+	    extents->p2.y = trap->bottom;
+
+	if (trap->left.p1.x < extents->p1.x) {
+	    cairo_fixed_t x = trap->left.p1.x;
+	    if (trap->top != trap->left.p1.y) {
+		x = _line_compute_intersection_x_for_y (&trap->left,
+							trap->top);
+		if (x < extents->p1.x)
+		    extents->p1.x = x;
+	    } else
+		extents->p1.x = x;
+	}
+	if (trap->left.p2.x < extents->p1.x) {
+	    cairo_fixed_t x = trap->left.p2.x;
+	    if (trap->bottom != trap->left.p2.y) {
+		x = _line_compute_intersection_x_for_y (&trap->left,
+							trap->bottom);
+		if (x < extents->p1.x)
+		    extents->p1.x = x;
+	    } else
+		extents->p1.x = x;
+	}
+
+	if (trap->right.p1.x > extents->p2.x) {
+	    cairo_fixed_t x = trap->right.p1.x;
+	    if (trap->top != trap->right.p1.y) {
+		x = _line_compute_intersection_x_for_y (&trap->right,
+							trap->top);
+		if (x > extents->p2.x)
+		    extents->p2.x = x;
+	    } else
+		extents->p2.x = x;
+	}
+	if (trap->right.p2.x > extents->p2.x) {
+	    cairo_fixed_t x = trap->right.p2.x;
+	    if (trap->bottom != trap->right.p2.y) {
+		x = _line_compute_intersection_x_for_y (&trap->right,
+							trap->bottom);
+		if (x > extents->p2.x)
+		    extents->p2.x = x;
+	    } else
+		extents->p2.x = x;
+	}
+    }
+}
+
+static cairo_bool_t
+_mono_edge_is_vertical (const cairo_line_t *line)
+{
+    return _cairo_fixed_integer_round_down (line->p1.x) == _cairo_fixed_integer_round_down (line->p2.x);
+}
+
+static cairo_bool_t
+_traps_are_pixel_aligned (cairo_traps_t *traps,
+			  cairo_antialias_t antialias)
+{
+    int i;
+
+    if (antialias == CAIRO_ANTIALIAS_NONE) {
+	for (i = 0; i < traps->num_traps; i++) {
+	    if (! _mono_edge_is_vertical (&traps->traps[i].left)   ||
+		! _mono_edge_is_vertical (&traps->traps[i].right))
+	    {
+		traps->maybe_region = FALSE;
+		return FALSE;
+	    }
+	}
+    } else {
+	for (i = 0; i < traps->num_traps; i++) {
+	    if (traps->traps[i].left.p1.x != traps->traps[i].left.p2.x   ||
+		traps->traps[i].right.p1.x != traps->traps[i].right.p2.x ||
+		! _cairo_fixed_is_integer (traps->traps[i].top)          ||
+		! _cairo_fixed_is_integer (traps->traps[i].bottom)       ||
+		! _cairo_fixed_is_integer (traps->traps[i].left.p1.x)    ||
+		! _cairo_fixed_is_integer (traps->traps[i].right.p1.x))
+	    {
+		traps->maybe_region = FALSE;
+		return FALSE;
+	    }
+	}
+    }
+
+    return TRUE;
+}
+
+/**
+ * _cairo_traps_extract_region:
+ * @traps: a #cairo_traps_t
+ * @region: a #cairo_region_t
+ *
+ * Determines if a set of trapezoids are exactly representable as a
+ * cairo region.  If so, the passed-in region is initialized to
+ * the area representing the given traps.  It should be finalized
+ * with cairo_region_fini().  If not, %CAIRO_INT_STATUS_UNSUPPORTED
+ * is returned.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS, %CAIRO_INT_STATUS_UNSUPPORTED
+ * or %CAIRO_STATUS_NO_MEMORY
+ **/
+cairo_int_status_t
+_cairo_traps_extract_region (cairo_traps_t   *traps,
+			     cairo_antialias_t antialias,
+			     cairo_region_t **region)
+{
+    cairo_rectangle_int_t stack_rects[CAIRO_STACK_ARRAY_LENGTH (cairo_rectangle_int_t)];
+    cairo_rectangle_int_t *rects = stack_rects;
+    cairo_int_status_t status;
+    int i, rect_count;
+
+    /* we only treat this a hint... */
+    if (antialias != CAIRO_ANTIALIAS_NONE && ! traps->maybe_region)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _traps_are_pixel_aligned (traps, antialias)) {
+	traps->maybe_region = FALSE;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (traps->num_traps > ARRAY_LENGTH (stack_rects)) {
+	rects = _cairo_malloc_ab (traps->num_traps, sizeof (cairo_rectangle_int_t));
+
+	if (unlikely (rects == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    rect_count = 0;
+    for (i = 0; i < traps->num_traps; i++) {
+	int x1, y1, x2, y2;
+
+	if (antialias == CAIRO_ANTIALIAS_NONE) {
+	    x1 = _cairo_fixed_integer_round_down (traps->traps[i].left.p1.x);
+	    y1 = _cairo_fixed_integer_round_down (traps->traps[i].top);
+	    x2 = _cairo_fixed_integer_round_down (traps->traps[i].right.p1.x);
+	    y2 = _cairo_fixed_integer_round_down (traps->traps[i].bottom);
+	} else {
+	    x1 = _cairo_fixed_integer_part (traps->traps[i].left.p1.x);
+	    y1 = _cairo_fixed_integer_part (traps->traps[i].top);
+	    x2 = _cairo_fixed_integer_part (traps->traps[i].right.p1.x);
+	    y2 = _cairo_fixed_integer_part (traps->traps[i].bottom);
+	}
+
+	if (x2 > x1 && y2 > y1) {
+	    rects[rect_count].x = x1;
+	    rects[rect_count].y = y1;
+	    rects[rect_count].width  = x2 - x1;
+	    rects[rect_count].height = y2 - y1;
+	    rect_count++;
+	}
+    }
+
+
+    *region = cairo_region_create_rectangles (rects, rect_count);
+    status = (*region)->status;
+
+    if (rects != stack_rects)
+	free (rects);
+
+    return status;
+}
+
+cairo_bool_t
+_cairo_traps_to_boxes (cairo_traps_t *traps,
+		       cairo_antialias_t antialias,
+		       cairo_boxes_t *boxes)
+{
+    int i;
+
+    for (i = 0; i < traps->num_traps; i++) {
+	if (traps->traps[i].left.p1.x  != traps->traps[i].left.p2.x ||
+	    traps->traps[i].right.p1.x != traps->traps[i].right.p2.x)
+	    return FALSE;
+    }
+
+    _cairo_boxes_init (boxes);
+
+    boxes->num_boxes    = traps->num_traps;
+    boxes->chunks.base  = (cairo_box_t *) traps->traps;
+    boxes->chunks.count = traps->num_traps;
+    boxes->chunks.size  = traps->num_traps;
+
+    if (antialias != CAIRO_ANTIALIAS_NONE) {
+	for (i = 0; i < traps->num_traps; i++) {
+	    /* Note the traps and boxes alias so we need to take the local copies first. */
+	    cairo_fixed_t x1 = traps->traps[i].left.p1.x;
+	    cairo_fixed_t x2 = traps->traps[i].right.p1.x;
+	    cairo_fixed_t y1 = traps->traps[i].top;
+	    cairo_fixed_t y2 = traps->traps[i].bottom;
+
+	    boxes->chunks.base[i].p1.x = x1;
+	    boxes->chunks.base[i].p1.y = y1;
+	    boxes->chunks.base[i].p2.x = x2;
+	    boxes->chunks.base[i].p2.y = y2;
+
+	    if (boxes->is_pixel_aligned) {
+		boxes->is_pixel_aligned =
+		    _cairo_fixed_is_integer (x1) && _cairo_fixed_is_integer (y1) &&
+		    _cairo_fixed_is_integer (x2) && _cairo_fixed_is_integer (y2);
+	    }
+	}
+    } else {
+	boxes->is_pixel_aligned = TRUE;
+
+	for (i = 0; i < traps->num_traps; i++) {
+	    /* Note the traps and boxes alias so we need to take the local copies first. */
+	    cairo_fixed_t x1 = traps->traps[i].left.p1.x;
+	    cairo_fixed_t x2 = traps->traps[i].right.p1.x;
+	    cairo_fixed_t y1 = traps->traps[i].top;
+	    cairo_fixed_t y2 = traps->traps[i].bottom;
+
+	    /* round down here to match Pixman's behavior when using traps. */
+	    boxes->chunks.base[i].p1.x = _cairo_fixed_round_down (x1);
+	    boxes->chunks.base[i].p1.y = _cairo_fixed_round_down (y1);
+	    boxes->chunks.base[i].p2.x = _cairo_fixed_round_down (x2);
+	    boxes->chunks.base[i].p2.y = _cairo_fixed_round_down (y2);
+	}
+    }
+
+    return TRUE;
+}
+
+/* moves trap points such that they become the actual corners of the trapezoid */
+static void
+_sanitize_trap (cairo_trapezoid_t *t)
+{
+    cairo_trapezoid_t s = *t;
+
+#define FIX(lr, tb, p) \
+    if (t->lr.p.y != t->tb) { \
+        t->lr.p.x = s.lr.p2.x + _cairo_fixed_mul_div_floor (s.lr.p1.x - s.lr.p2.x, s.tb - s.lr.p2.y, s.lr.p1.y - s.lr.p2.y); \
+        t->lr.p.y = s.tb; \
+    }
+    FIX (left,  top,    p1);
+    FIX (left,  bottom, p2);
+    FIX (right, top,    p1);
+    FIX (right, bottom, p2);
+}
+
+cairo_private cairo_status_t
+_cairo_traps_path (const cairo_traps_t *traps,
+		   cairo_path_fixed_t  *path)
+{
+    int i;
+
+    for (i = 0; i < traps->num_traps; i++) {
+	cairo_status_t status;
+	cairo_trapezoid_t trap = traps->traps[i];
+
+	if (trap.top == trap.bottom)
+	    continue;
+
+	_sanitize_trap (&trap);
+
+	status = _cairo_path_fixed_move_to (path, trap.left.p1.x, trap.top);
+	if (unlikely (status)) return status;
+	status = _cairo_path_fixed_line_to (path, trap.right.p1.x, trap.top);
+	if (unlikely (status)) return status;
+	status = _cairo_path_fixed_line_to (path, trap.right.p2.x, trap.bottom);
+	if (unlikely (status)) return status;
+	status = _cairo_path_fixed_line_to (path, trap.left.p2.x, trap.bottom);
+	if (unlikely (status)) return status;
+	status = _cairo_path_fixed_close_path (path);
+	if (unlikely (status)) return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_debug_print_traps (FILE *file, const cairo_traps_t *traps)
+{
+    cairo_box_t extents;
+    int n;
+
+#if 0
+    if (traps->has_limits) {
+	printf ("%s: limits=(%d, %d, %d, %d)\n",
+		filename,
+		traps->limits.p1.x, traps->limits.p1.y,
+		traps->limits.p2.x, traps->limits.p2.y);
+    }
+#endif
+
+    _cairo_traps_extents (traps, &extents);
+    fprintf (file, "extents=(%d, %d, %d, %d)\n",
+	     extents.p1.x, extents.p1.y,
+	     extents.p2.x, extents.p2.y);
+
+    for (n = 0; n < traps->num_traps; n++) {
+	fprintf (file, "%d %d L:(%d, %d), (%d, %d) R:(%d, %d), (%d, %d)\n",
+		 traps->traps[n].top,
+		 traps->traps[n].bottom,
+		 traps->traps[n].left.p1.x,
+		 traps->traps[n].left.p1.y,
+		 traps->traps[n].left.p2.x,
+		 traps->traps[n].left.p2.y,
+		 traps->traps[n].right.p1.x,
+		 traps->traps[n].right.p1.y,
+		 traps->traps[n].right.p2.x,
+		 traps->traps[n].right.p2.y);
+    }
+}
+
+struct cairo_trap_renderer {
+    cairo_span_renderer_t base;
+    cairo_traps_t *traps;
+};
+
+static cairo_status_t
+span_to_traps (void *abstract_renderer, int y, int h,
+	       const cairo_half_open_span_t *spans, unsigned num_spans)
+{
+    struct cairo_trap_renderer *r = abstract_renderer;
+    cairo_fixed_t top, bot;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    top = _cairo_fixed_from_int (y);
+    bot = _cairo_fixed_from_int (y + h);
+    do {
+	if (spans[0].coverage) {
+	    cairo_fixed_t x0 = _cairo_fixed_from_int(spans[0].x);
+	    cairo_fixed_t x1 = _cairo_fixed_from_int(spans[1].x);
+	    cairo_line_t left = { { x0, top }, { x0, bot } },
+			 right = { { x1, top }, { x1, bot } };
+	    _cairo_traps_add_trap (r->traps, top, bot, &left, &right);
+	}
+	spans++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_rasterise_polygon_to_traps (cairo_polygon_t			*polygon,
+				   cairo_fill_rule_t			 fill_rule,
+				   cairo_antialias_t			 antialias,
+				   cairo_traps_t *traps)
+{
+    struct cairo_trap_renderer renderer;
+    cairo_scan_converter_t *converter;
+    cairo_int_status_t status;
+    cairo_rectangle_int_t r;
+
+    TRACE ((stderr, "%s: fill_rule=%d, antialias=%d\n",
+	    __FUNCTION__, fill_rule, antialias));
+    assert(antialias == CAIRO_ANTIALIAS_NONE);
+
+    renderer.traps = traps;
+    renderer.base.render_rows = span_to_traps;
+
+    _cairo_box_round_to_rectangle (&polygon->extents, &r);
+    converter = _cairo_mono_scan_converter_create (r.x, r.y,
+						   r.x + r.width,
+						   r.y + r.height,
+						   fill_rule);
+    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = converter->generate (converter, &renderer.base);
+    converter->destroy (converter);
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-tristrip-private.h b/libs/cairo-1.16.0/src/cairo-tristrip-private.h
new file mode 100644
index 0000000..ccd2879
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tristrip-private.h
@@ -0,0 +1,94 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_TRISTRIP_PRIVATE_H
+#define CAIRO_TRISTRIP_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+#include "cairo-types-private.h"
+
+CAIRO_BEGIN_DECLS
+
+struct _cairo_tristrip {
+    cairo_status_t status;
+
+    /* XXX clipping */
+
+    const cairo_box_t *limits;
+    int num_limits;
+
+    int num_points;
+    int size_points;
+    cairo_point_t *points;
+    cairo_point_t  points_embedded[64];
+};
+
+cairo_private void
+_cairo_tristrip_init (cairo_tristrip_t *strip);
+
+cairo_private void
+_cairo_tristrip_limit (cairo_tristrip_t	*strip,
+		       const cairo_box_t	*limits,
+		       int			 num_limits);
+
+cairo_private void
+_cairo_tristrip_init_with_clip (cairo_tristrip_t *strip,
+				const cairo_clip_t *clip);
+
+cairo_private void
+_cairo_tristrip_translate (cairo_tristrip_t *strip, int x, int y);
+
+cairo_private void
+_cairo_tristrip_move_to (cairo_tristrip_t *strip,
+			 const cairo_point_t *point);
+
+cairo_private void
+_cairo_tristrip_add_point (cairo_tristrip_t *strip,
+			   const cairo_point_t *point);
+
+cairo_private void
+_cairo_tristrip_extents (const cairo_tristrip_t *strip,
+			 cairo_box_t         *extents);
+
+cairo_private void
+_cairo_tristrip_fini (cairo_tristrip_t *strip);
+
+#define _cairo_tristrip_status(T) ((T)->status)
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_TRISTRIP_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-tristrip.c b/libs/cairo-1.16.0/src/cairo-tristrip.c
new file mode 100644
index 0000000..bcf3b23
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-tristrip.c
@@ -0,0 +1,185 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilsonc.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-tristrip-private.h"
+
+void
+_cairo_tristrip_init (cairo_tristrip_t *strip)
+{
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (strip, sizeof (cairo_tristrip_t)));
+
+    strip->status = CAIRO_STATUS_SUCCESS;
+
+    strip->num_limits = 0;
+    strip->num_points = 0;
+
+    strip->size_points = ARRAY_LENGTH (strip->points_embedded);
+    strip->points = strip->points_embedded;
+}
+
+void
+_cairo_tristrip_fini (cairo_tristrip_t *strip)
+{
+    if (strip->points != strip->points_embedded)
+	free (strip->points);
+
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (strip, sizeof (cairo_tristrip_t)));
+}
+
+
+void
+_cairo_tristrip_limit (cairo_tristrip_t	*strip,
+		       const cairo_box_t	*limits,
+		       int			 num_limits)
+{
+    strip->limits = limits;
+    strip->num_limits = num_limits;
+}
+
+void
+_cairo_tristrip_init_with_clip (cairo_tristrip_t *strip,
+				const cairo_clip_t *clip)
+{
+    _cairo_tristrip_init (strip);
+    if (clip)
+	_cairo_tristrip_limit (strip, clip->boxes, clip->num_boxes);
+}
+
+/* make room for at least one more trap */
+static cairo_bool_t
+_cairo_tristrip_grow (cairo_tristrip_t *strip)
+{
+    cairo_point_t *points;
+    int new_size = 4 * strip->size_points;
+
+    if (CAIRO_INJECT_FAULT ()) {
+	strip->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return FALSE;
+    }
+
+    if (strip->points == strip->points_embedded) {
+	points = _cairo_malloc_ab (new_size, sizeof (cairo_point_t));
+	if (points != NULL)
+	    memcpy (points, strip->points, sizeof (strip->points_embedded));
+    } else {
+	points = _cairo_realloc_ab (strip->points,
+	                               new_size, sizeof (cairo_trapezoid_t));
+    }
+
+    if (unlikely (points == NULL)) {
+	strip->status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	return FALSE;
+    }
+
+    strip->points = points;
+    strip->size_points = new_size;
+    return TRUE;
+}
+
+void
+_cairo_tristrip_add_point (cairo_tristrip_t *strip,
+			   const cairo_point_t *p)
+{
+    if (unlikely (strip->num_points == strip->size_points)) {
+	if (unlikely (! _cairo_tristrip_grow (strip)))
+	    return;
+    }
+
+    strip->points[strip->num_points++] = *p;
+}
+
+/* Insert degenerate triangles to advance to the given point. The
+ * next point inserted must also be @p. */
+void
+_cairo_tristrip_move_to (cairo_tristrip_t *strip,
+			 const cairo_point_t *p)
+{
+    if (strip->num_points == 0)
+	return;
+
+    _cairo_tristrip_add_point (strip, &strip->points[strip->num_points-1]);
+    _cairo_tristrip_add_point (strip, p);
+#if 0
+    /* and one more for luck! (to preserve cw/ccw ordering) */
+    _cairo_tristrip_add_point (strip, p);
+#endif
+}
+
+void
+_cairo_tristrip_translate (cairo_tristrip_t *strip, int x, int y)
+{
+    cairo_fixed_t xoff, yoff;
+    cairo_point_t *p;
+    int i;
+
+    xoff = _cairo_fixed_from_int (x);
+    yoff = _cairo_fixed_from_int (y);
+
+    for (i = 0, p = strip->points; i < strip->num_points; i++, p++) {
+	p->x += xoff;
+	p->y += yoff;
+    }
+}
+
+void
+_cairo_tristrip_extents (const cairo_tristrip_t *strip,
+			 cairo_box_t *extents)
+{
+    int i;
+
+    if (strip->num_points == 0) {
+	extents->p1.x = extents->p1.y = 0;
+	extents->p2.x = extents->p2.y = 0;
+	return;
+    }
+
+    extents->p2 = extents->p1 = strip->points[0];
+    for (i = 1; i < strip->num_points; i++) {
+	const cairo_point_t *p =  &strip->points[i];
+
+	if (p->x < extents->p1.x)
+	    extents->p1.x = p->x;
+	else if (p->x > extents->p2.x)
+	    extents->p2.x = p->x;
+
+	if (p->y < extents->p1.y)
+	    extents->p1.y = p->y;
+	else if (p->y > extents->p2.y)
+	    extents->p2.y = p->y;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-truetype-subset-private.h b/libs/cairo-1.16.0/src/cairo-truetype-subset-private.h
new file mode 100644
index 0000000..dc95732
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-truetype-subset-private.h
@@ -0,0 +1,212 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_TRUETYPE_SUBSET_PRIVATE_H
+#define CAIRO_TRUETYPE_SUBSET_PRIVATE_H
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+/* The structs defined here should strictly follow the TrueType
+ * specification and not be padded.  We use only 16-bit integer
+ * in their definition to guarantee that.  The fields of type
+ * "FIXED" in the TT spec are broken into two *_1 and *_2 16-bit
+ * parts, and 64-bit members are broken into four.
+ *
+ * The test truetype-tables in the test suite makes sure that
+ * these tables have the right size.  Please update that test
+ * if you add new tables/structs that should be packed.
+ */
+
+#define MAKE_TT_TAG(a, b, c, d)    (a<<24 | b<<16 | c<<8 | d)
+#define TT_TAG_CFF    MAKE_TT_TAG('C','F','F',' ')
+#define TT_TAG_cmap   MAKE_TT_TAG('c','m','a','p')
+#define TT_TAG_cvt    MAKE_TT_TAG('c','v','t',' ')
+#define TT_TAG_fpgm   MAKE_TT_TAG('f','p','g','m')
+#define TT_TAG_glyf   MAKE_TT_TAG('g','l','y','f')
+#define TT_TAG_head   MAKE_TT_TAG('h','e','a','d')
+#define TT_TAG_hhea   MAKE_TT_TAG('h','h','e','a')
+#define TT_TAG_hmtx   MAKE_TT_TAG('h','m','t','x')
+#define TT_TAG_loca   MAKE_TT_TAG('l','o','c','a')
+#define TT_TAG_maxp   MAKE_TT_TAG('m','a','x','p')
+#define TT_TAG_name   MAKE_TT_TAG('n','a','m','e')
+#define TT_TAG_OS2    MAKE_TT_TAG('O','S','/','2')
+#define TT_TAG_post   MAKE_TT_TAG('p','o','s','t')
+#define TT_TAG_prep   MAKE_TT_TAG('p','r','e','p')
+
+/* All tt_* structs are big-endian */
+typedef struct _tt_cmap_index {
+    uint16_t platform;
+    uint16_t encoding;
+    uint32_t offset;
+} tt_cmap_index_t;
+
+typedef struct _tt_cmap {
+    uint16_t        version;
+    uint16_t        num_tables;
+    tt_cmap_index_t index[1];
+} tt_cmap_t;
+
+typedef struct _segment_map {
+    uint16_t format;
+    uint16_t length;
+    uint16_t version;
+    uint16_t segCountX2;
+    uint16_t searchRange;
+    uint16_t entrySelector;
+    uint16_t rangeShift;
+    uint16_t endCount[1];
+} tt_segment_map_t;
+
+typedef struct _tt_head {
+    int16_t     version_1;
+    int16_t     version_2;
+    int16_t     revision_1;
+    int16_t     revision_2;
+    uint16_t    checksum_1;
+    uint16_t    checksum_2;
+    uint16_t    magic_1;
+    uint16_t    magic_2;
+    uint16_t    flags;
+    uint16_t    units_per_em;
+    int16_t     created_1;
+    int16_t     created_2;
+    int16_t     created_3;
+    int16_t     created_4;
+    int16_t     modified_1;
+    int16_t     modified_2;
+    int16_t     modified_3;
+    int16_t     modified_4;
+    int16_t     x_min;                  /* FWORD */
+    int16_t     y_min;                  /* FWORD */
+    int16_t     x_max;                  /* FWORD */
+    int16_t     y_max;                  /* FWORD */
+    uint16_t    mac_style;
+    uint16_t    lowest_rec_pppem;
+    int16_t     font_direction_hint;
+    int16_t     index_to_loc_format;
+    int16_t     glyph_data_format;
+} tt_head_t;
+
+typedef struct _tt_hhea {
+    int16_t     version_1;
+    int16_t     version_2;
+    int16_t     ascender;               /* FWORD */
+    int16_t     descender;              /* FWORD */
+    int16_t     line_gap;               /* FWORD */
+    uint16_t    advance_max_width;      /* UFWORD */
+    int16_t     min_left_side_bearing;  /* FWORD */
+    int16_t     min_right_side_bearing; /* FWORD */
+    int16_t     x_max_extent;           /* FWORD */
+    int16_t     caret_slope_rise;
+    int16_t     caret_slope_run;
+    int16_t     reserved[5];
+    int16_t     metric_data_format;
+    uint16_t    num_hmetrics;
+} tt_hhea_t;
+
+typedef struct _tt_maxp {
+    int16_t     version_1;
+    int16_t     version_2;
+    uint16_t    num_glyphs;
+    uint16_t    max_points;
+    uint16_t    max_contours;
+    uint16_t    max_composite_points;
+    uint16_t    max_composite_contours;
+    uint16_t    max_zones;
+    uint16_t    max_twilight_points;
+    uint16_t    max_storage;
+    uint16_t    max_function_defs;
+    uint16_t    max_instruction_defs;
+    uint16_t    max_stack_elements;
+    uint16_t    max_size_of_instructions;
+    uint16_t    max_component_elements;
+    uint16_t    max_component_depth;
+} tt_maxp_t;
+
+typedef struct _tt_name_record {
+    uint16_t platform;
+    uint16_t encoding;
+    uint16_t language;
+    uint16_t name;
+    uint16_t length;
+    uint16_t offset;
+} tt_name_record_t;
+
+typedef struct _tt_name {
+    uint16_t   format;
+    uint16_t   num_records;
+    uint16_t   strings_offset;
+    tt_name_record_t records[1];
+} tt_name_t;
+
+
+/* bitmask for fsSelection field */
+#define TT_FS_SELECTION_ITALIC   1
+#define TT_FS_SELECTION_BOLD    32
+
+/* _unused fields are defined in TT spec but not used by cairo */
+typedef struct _tt_os2 {
+    uint16_t   _unused1[2];
+    uint16_t   usWeightClass;
+    uint16_t   _unused2[28];
+    uint16_t   fsSelection;
+    uint16_t   _unused3[11];
+} tt_os2_t;
+
+/* composite_glyph_t flags */
+#define TT_ARG_1_AND_2_ARE_WORDS     0x0001
+#define TT_WE_HAVE_A_SCALE           0x0008
+#define TT_MORE_COMPONENTS           0x0020
+#define TT_WE_HAVE_AN_X_AND_Y_SCALE  0x0040
+#define TT_WE_HAVE_A_TWO_BY_TWO      0x0080
+
+typedef struct _tt_composite_glyph {
+    uint16_t flags;
+    uint16_t index;
+    uint16_t args[6]; /* 1 to 6 arguments depending on value of flags */
+} tt_composite_glyph_t;
+
+typedef struct _tt_glyph_data {
+    int16_t           num_contours;
+    int8_t            data[8];
+    tt_composite_glyph_t glyph;
+} tt_glyph_data_t;
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
+
+#endif /* CAIRO_TRUETYPE_SUBSET_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-truetype-subset.c b/libs/cairo-1.16.0/src/cairo-truetype-subset.c
new file mode 100644
index 0000000..6cef4ee
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-truetype-subset.c
@@ -0,0 +1,1681 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+/*
+ * Useful links:
+ * http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6.html
+ * http://www.microsoft.com/typography/specs/default.htm
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-truetype-subset-private.h"
+
+
+typedef struct subset_glyph subset_glyph_t;
+struct subset_glyph {
+    int parent_index;
+    unsigned long location;
+};
+
+typedef struct _cairo_truetype_font cairo_truetype_font_t;
+
+typedef struct table table_t;
+struct table {
+    unsigned long tag;
+    cairo_status_t (*write) (cairo_truetype_font_t *font, unsigned long tag);
+    int pos; /* position in the font directory */
+};
+
+struct _cairo_truetype_font {
+
+    cairo_scaled_font_subset_t *scaled_font_subset;
+
+    table_t truetype_tables[10];
+    int num_tables;
+
+    struct {
+	char *font_name;
+	char *ps_name;
+	int num_glyphs_in_face; /* glyphs in font */
+	long x_min, y_min, x_max, y_max;
+	long ascent, descent;
+        int  units_per_em;
+    } base;
+
+    subset_glyph_t *glyphs; /* array size: num_glyphs_in_face + 2 */
+    const cairo_scaled_font_backend_t *backend;
+    unsigned int num_glyphs; /* glyphs used */
+    int *widths; /* array size: num_glyphs_in_face  + 1 */
+    int checksum_index;
+    cairo_array_t output;
+    cairo_array_t string_offsets;
+    unsigned long last_offset;
+    unsigned long last_boundary;
+    int *parent_to_subset; /* array size: num_glyphs_in_face + 1 */
+    cairo_status_t status;
+    cairo_bool_t is_pdf;
+};
+
+/*
+ * Test that the structs we define for TrueType tables have the
+ * correct size, ie. they are not padded.
+ */
+#define check(T, S) COMPILE_TIME_ASSERT (sizeof (T) == (S))
+check (tt_head_t,	54);
+check (tt_hhea_t,	36);
+check (tt_maxp_t,	32);
+check (tt_name_record_t, 12);
+check (tt_name_t,	18);
+check (tt_composite_glyph_t, 16);
+check (tt_glyph_data_t,	26);
+#undef check
+
+static cairo_status_t
+cairo_truetype_font_use_glyph (cairo_truetype_font_t	    *font,
+	                       unsigned short		     glyph,
+			       unsigned short		    *out);
+
+#define SFNT_VERSION			0x00010000
+#define SFNT_STRING_MAX_LENGTH  65535
+
+static cairo_status_t
+_cairo_truetype_font_set_error (cairo_truetype_font_t *font,
+			        cairo_status_t status)
+{
+    if (status == CAIRO_STATUS_SUCCESS ||
+	status == (int)CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    _cairo_status_set_error (&font->status, status);
+
+    return _cairo_error (status);
+}
+
+static cairo_status_t
+_cairo_truetype_font_create (cairo_scaled_font_subset_t  *scaled_font_subset,
+			     cairo_bool_t is_pdf,
+			     cairo_truetype_font_t      **font_return)
+{
+    cairo_status_t status;
+    cairo_bool_t is_synthetic;
+    cairo_truetype_font_t *font;
+    const cairo_scaled_font_backend_t *backend;
+    tt_head_t head;
+    tt_hhea_t hhea;
+    tt_maxp_t maxp;
+    unsigned long size;
+
+    backend = scaled_font_subset->scaled_font->backend;
+    if (!backend->load_truetype_table)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* FIXME: We should either support subsetting vertical fonts, or fail on
+     * vertical.  Currently font_options_t doesn't have vertical flag, but
+     * it should be added in the future.  For now, the freetype backend
+     * returns UNSUPPORTED in load_truetype_table if the font is vertical.
+     *
+     *  if (cairo_font_options_get_vertical_layout (scaled_font_subset->scaled_font))
+     *   return CAIRO_INT_STATUS_UNSUPPORTED;
+     */
+
+    /* We need to use a fallback font if this font differs from the glyf outlines. */
+    if (backend->is_synthetic) {
+	status = backend->is_synthetic (scaled_font_subset->scaled_font, &is_synthetic);
+	if (unlikely (status))
+	    return status;
+
+	if (is_synthetic)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    size = sizeof (tt_head_t);
+    status = backend->load_truetype_table (scaled_font_subset->scaled_font,
+                                          TT_TAG_head, 0,
+					  (unsigned char *) &head,
+                                          &size);
+    if (unlikely (status))
+	return status;
+
+    size = sizeof (tt_maxp_t);
+    status = backend->load_truetype_table (scaled_font_subset->scaled_font,
+                                           TT_TAG_maxp, 0,
+					   (unsigned char *) &maxp,
+					   &size);
+    if (unlikely (status))
+	return status;
+
+    size = sizeof (tt_hhea_t);
+    status = backend->load_truetype_table (scaled_font_subset->scaled_font,
+                                           TT_TAG_hhea, 0,
+					   (unsigned char *) &hhea,
+					   &size);
+    if (unlikely (status))
+	return status;
+
+    font = _cairo_malloc (sizeof (cairo_truetype_font_t));
+    if (unlikely (font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->backend = backend;
+    font->base.num_glyphs_in_face = be16_to_cpu (maxp.num_glyphs);
+    font->scaled_font_subset = scaled_font_subset;
+
+    font->last_offset = 0;
+    font->last_boundary = 0;
+    _cairo_array_init (&font->output, sizeof (char));
+    status = _cairo_array_grow_by (&font->output, 4096);
+    if (unlikely (status))
+	goto fail1;
+
+    /* Add 2: +1 case font does not contain .notdef, and +1 because an extra
+     * entry is required to contain the end location of the last glyph.
+     */
+    font->glyphs = calloc (font->base.num_glyphs_in_face + 2, sizeof (subset_glyph_t));
+    if (unlikely (font->glyphs == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail1;
+    }
+
+    /* Add 1 in case font does not contain .notdef */
+    font->parent_to_subset = calloc (font->base.num_glyphs_in_face + 1, sizeof (int));
+    if (unlikely (font->parent_to_subset == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail2;
+    }
+
+    font->is_pdf = is_pdf;
+    font->num_glyphs = 0;
+    font->base.x_min = (int16_t) be16_to_cpu (head.x_min);
+    font->base.y_min = (int16_t) be16_to_cpu (head.y_min);
+    font->base.x_max = (int16_t) be16_to_cpu (head.x_max);
+    font->base.y_max = (int16_t) be16_to_cpu (head.y_max);
+    font->base.ascent = (int16_t) be16_to_cpu (hhea.ascender);
+    font->base.descent = (int16_t) be16_to_cpu (hhea.descender);
+    font->base.units_per_em = (int16_t) be16_to_cpu (head.units_per_em);
+    if (font->base.units_per_em == 0)
+        font->base.units_per_em = 2048;
+
+    font->base.ps_name = NULL;
+    font->base.font_name = NULL;
+    status = _cairo_truetype_read_font_name (scaled_font_subset->scaled_font,
+					     &font->base.ps_name,
+					     &font->base.font_name);
+    if (_cairo_status_is_error (status))
+	goto fail3;
+
+    /* If the PS name is not found, create a CairoFont-x-y name. */
+    if (font->base.ps_name == NULL) {
+        font->base.ps_name = _cairo_malloc (30);
+        if (unlikely (font->base.ps_name == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+            goto fail3;
+	}
+
+        snprintf(font->base.ps_name, 30, "CairoFont-%u-%u",
+                 scaled_font_subset->font_id,
+                 scaled_font_subset->subset_id);
+    }
+
+    /* Add 1 in case font does not contain .notdef */
+    font->widths = calloc (font->base.num_glyphs_in_face + 1, sizeof (int));
+    if (unlikely (font->widths == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail4;
+    }
+
+    _cairo_array_init (&font->string_offsets, sizeof (unsigned long));
+    status = _cairo_array_grow_by (&font->string_offsets, 10);
+    if (unlikely (status))
+	goto fail5;
+
+    font->status = CAIRO_STATUS_SUCCESS;
+
+    *font_return = font;
+
+    return CAIRO_STATUS_SUCCESS;
+
+ fail5:
+    _cairo_array_fini (&font->string_offsets);
+    free (font->widths);
+ fail4:
+    free (font->base.ps_name);
+ fail3:
+    free (font->parent_to_subset);
+    free (font->base.font_name);
+ fail2:
+    free (font->glyphs);
+ fail1:
+    _cairo_array_fini (&font->output);
+    free (font);
+
+    return status;
+}
+
+static void
+cairo_truetype_font_destroy (cairo_truetype_font_t *font)
+{
+    _cairo_array_fini (&font->string_offsets);
+    free (font->widths);
+    free (font->base.ps_name);
+    free (font->base.font_name);
+    free (font->parent_to_subset);
+    free (font->glyphs);
+    _cairo_array_fini (&font->output);
+    free (font);
+}
+
+static cairo_status_t
+cairo_truetype_font_allocate_write_buffer (cairo_truetype_font_t  *font,
+					   size_t		   length,
+					   unsigned char	 **buffer)
+{
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    status = _cairo_array_allocate (&font->output, length, (void **) buffer);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+cairo_truetype_font_write (cairo_truetype_font_t *font,
+			   const void            *data,
+			   size_t                 length)
+{
+    cairo_status_t status;
+
+    if (font->status)
+	return;
+
+    status = _cairo_array_append_multiple (&font->output, data, length);
+    if (unlikely (status))
+	status = _cairo_truetype_font_set_error (font, status);
+}
+
+static void
+cairo_truetype_font_write_be16 (cairo_truetype_font_t *font,
+				uint16_t               value)
+{
+    uint16_t be16_value;
+
+    if (font->status)
+	return;
+
+    be16_value = cpu_to_be16 (value);
+    cairo_truetype_font_write (font, &be16_value, sizeof be16_value);
+}
+
+static void
+cairo_truetype_font_write_be32 (cairo_truetype_font_t *font,
+				uint32_t               value)
+{
+    uint32_t be32_value;
+
+    if (font->status)
+	return;
+
+    be32_value = cpu_to_be32 (value);
+    cairo_truetype_font_write (font, &be32_value, sizeof be32_value);
+}
+
+static cairo_status_t
+cairo_truetype_font_align_output (cairo_truetype_font_t	    *font,
+	                          unsigned long		    *aligned)
+{
+    int length, pad;
+    unsigned char *padding;
+
+    length = _cairo_array_num_elements (&font->output);
+    *aligned = (length + 3) & ~3;
+    pad = *aligned - length;
+
+    if (pad) {
+	cairo_status_t status;
+
+	status = cairo_truetype_font_allocate_write_buffer (font, pad,
+		                                            &padding);
+	if (unlikely (status))
+	    return status;
+
+	memset (padding, 0, pad);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_check_boundary (cairo_truetype_font_t *font,
+				    unsigned long          boundary)
+{
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    if (boundary - font->last_offset > SFNT_STRING_MAX_LENGTH)
+    {
+        status = _cairo_array_append (&font->string_offsets,
+				      &font->last_boundary);
+	if (unlikely (status))
+	    return _cairo_truetype_font_set_error (font, status);
+
+        font->last_offset = font->last_boundary;
+    }
+    font->last_boundary = boundary;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+typedef struct _cmap_unicode_range {
+    unsigned int start;
+    unsigned int end;
+} cmap_unicode_range_t;
+
+static cmap_unicode_range_t winansi_unicode_ranges[] = {
+    { 0x0020, 0x007f },
+    { 0x00a0, 0x00ff },
+    { 0x0152, 0x0153 },
+    { 0x0160, 0x0161 },
+    { 0x0178, 0x0178 },
+    { 0x017d, 0x017e },
+    { 0x0192, 0x0192 },
+    { 0x02c6, 0x02c6 },
+    { 0x02dc, 0x02dc },
+    { 0x2013, 0x2026 },
+    { 0x2030, 0x2030 },
+    { 0x2039, 0x203a },
+    { 0x20ac, 0x20ac },
+    { 0x2122, 0x2122 },
+};
+
+static cairo_status_t
+cairo_truetype_font_write_cmap_table (cairo_truetype_font_t *font,
+				      unsigned long          tag)
+{
+    int i;
+    unsigned int j;
+    int range_offset;
+    int num_ranges;
+    int entry_selector;
+    int length;
+
+    num_ranges = ARRAY_LENGTH (winansi_unicode_ranges);
+
+    length = 16 + (num_ranges + 1)*8;
+    for (i = 0; i < num_ranges; i++)
+	length += (winansi_unicode_ranges[i].end - winansi_unicode_ranges[i].start + 1)*2;
+
+    entry_selector = 0;
+    while ((1 << entry_selector) <= (num_ranges + 1))
+	entry_selector++;
+
+    entry_selector--;
+
+    cairo_truetype_font_write_be16 (font, 0);  /* Table version */
+    cairo_truetype_font_write_be16 (font, 1);  /* Num tables */
+
+    cairo_truetype_font_write_be16 (font, 3);  /* Platform */
+    cairo_truetype_font_write_be16 (font, 1);  /* Encoding */
+    cairo_truetype_font_write_be32 (font, 12); /* Offset to start of table */
+
+    /* Output a format 4 encoding table for the winansi encoding */
+
+    cairo_truetype_font_write_be16 (font, 4);  /* Format */
+    cairo_truetype_font_write_be16 (font, length); /* Length */
+    cairo_truetype_font_write_be16 (font, 0);  /* Version */
+    cairo_truetype_font_write_be16 (font, num_ranges*2 + 2);  /* 2*segcount */
+    cairo_truetype_font_write_be16 (font, (1 << (entry_selector + 1)));  /* searchrange */
+    cairo_truetype_font_write_be16 (font, entry_selector);  /* entry selector */
+    cairo_truetype_font_write_be16 (font, num_ranges*2 + 2 - (1 << (entry_selector + 1)));  /* rangeshift */
+    for (i = 0; i < num_ranges; i++)
+	cairo_truetype_font_write_be16 (font, winansi_unicode_ranges[i].end); /* end count[] */
+    cairo_truetype_font_write_be16 (font, 0xffff);  /* end count[] */
+
+    cairo_truetype_font_write_be16 (font, 0);       /* reserved */
+
+    for (i = 0; i < num_ranges; i++)
+	cairo_truetype_font_write_be16 (font, winansi_unicode_ranges[i].start);  /* startCode[] */
+    cairo_truetype_font_write_be16 (font, 0xffff);  /* startCode[] */
+
+    for (i = 0; i < num_ranges; i++)
+	cairo_truetype_font_write_be16 (font, 0x0000);  /* delta[] */
+    cairo_truetype_font_write_be16 (font, 1);       /* delta[] */
+
+    range_offset = num_ranges*2 + 2;
+    for (i = 0; i < num_ranges; i++) {
+	cairo_truetype_font_write_be16 (font, range_offset);       /* rangeOffset[] */
+	range_offset += (winansi_unicode_ranges[i].end - winansi_unicode_ranges[i].start + 1)*2 - 2;
+    }
+    cairo_truetype_font_write_be16 (font, 0);       /* rangeOffset[] */
+
+    for (i = 0; i < num_ranges; i++) {
+	for (j = winansi_unicode_ranges[i].start; j < winansi_unicode_ranges[i].end + 1; j++) {
+	    int ch = _cairo_unicode_to_winansi (j);
+	    int glyph;
+
+	    if (ch > 0)
+		glyph = font->scaled_font_subset->latin_to_subset_glyph_index[ch];
+	    else
+		glyph = 0;
+	    cairo_truetype_font_write_be16 (font, glyph);
+	}
+    }
+
+    return font->status;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_generic_table (cairo_truetype_font_t *font,
+					 unsigned long          tag)
+{
+    cairo_status_t status;
+    unsigned char *buffer;
+    unsigned long size;
+
+    if (font->status)
+	return font->status;
+
+    size = 0;
+    status = font->backend->load_truetype_table(font->scaled_font_subset->scaled_font,
+					        tag, 0, NULL, &size);
+    if (unlikely (status))
+        return _cairo_truetype_font_set_error (font, status);
+
+    status = cairo_truetype_font_allocate_write_buffer (font, size, &buffer);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 tag, 0, buffer, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_remap_composite_glyph (cairo_truetype_font_t	*font,
+					   unsigned char		*buffer,
+					   unsigned long		 size)
+{
+    tt_glyph_data_t *glyph_data;
+    tt_composite_glyph_t *composite_glyph;
+    int num_args;
+    int has_more_components;
+    unsigned short flags;
+    unsigned short index;
+    cairo_status_t status;
+    unsigned char *end = buffer + size;
+
+    if (font->status)
+	return font->status;
+
+    glyph_data = (tt_glyph_data_t *) buffer;
+    if ((unsigned char *)(&glyph_data->data) >= end)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((int16_t)be16_to_cpu (glyph_data->num_contours) >= 0)
+        return CAIRO_STATUS_SUCCESS;
+
+    composite_glyph = &glyph_data->glyph;
+    do {
+	if ((unsigned char *)(&composite_glyph->args[1]) > end)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	flags = be16_to_cpu (composite_glyph->flags);
+        has_more_components = flags & TT_MORE_COMPONENTS;
+        status = cairo_truetype_font_use_glyph (font, be16_to_cpu (composite_glyph->index), &index);
+	if (unlikely (status))
+	    return status;
+
+        composite_glyph->index = cpu_to_be16 (index);
+        num_args = 1;
+        if (flags & TT_ARG_1_AND_2_ARE_WORDS)
+            num_args += 1;
+
+	if (flags & TT_WE_HAVE_A_SCALE)
+            num_args += 1;
+        else if (flags & TT_WE_HAVE_AN_X_AND_Y_SCALE)
+            num_args += 2;
+        else if (flags & TT_WE_HAVE_A_TWO_BY_TWO)
+            num_args += 4;
+
+	composite_glyph = (tt_composite_glyph_t *) &(composite_glyph->args[num_args]);
+    } while (has_more_components);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_glyf_table (cairo_truetype_font_t *font,
+				      unsigned long          tag)
+{
+    unsigned long start_offset, index, size, next;
+    tt_head_t header;
+    unsigned long begin, end;
+    unsigned char *buffer;
+    unsigned int i;
+    union {
+	unsigned char *bytes;
+	uint16_t      *short_offsets;
+	uint32_t      *long_offsets;
+    } u;
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    size = sizeof (tt_head_t);
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 TT_TAG_head, 0,
+						 (unsigned char*) &header, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    if (be16_to_cpu (header.index_to_loc_format) == 0)
+	size = sizeof (int16_t) * (font->base.num_glyphs_in_face + 1);
+    else
+	size = sizeof (int32_t) * (font->base.num_glyphs_in_face + 1);
+
+    u.bytes = _cairo_malloc (size);
+    if (unlikely (u.bytes == NULL))
+	return _cairo_truetype_font_set_error (font, CAIRO_STATUS_NO_MEMORY);
+
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                                 TT_TAG_loca, 0, u.bytes, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    start_offset = _cairo_array_num_elements (&font->output);
+    for (i = 0; i < font->num_glyphs; i++) {
+	index = font->glyphs[i].parent_index;
+	if (be16_to_cpu (header.index_to_loc_format) == 0) {
+	    begin = be16_to_cpu (u.short_offsets[index]) * 2;
+	    end = be16_to_cpu (u.short_offsets[index + 1]) * 2;
+	}
+	else {
+	    begin = be32_to_cpu (u.long_offsets[index]);
+	    end = be32_to_cpu (u.long_offsets[index + 1]);
+	}
+
+	/* quick sanity check... */
+	if (end < begin) {
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	    goto FAIL;
+	}
+
+	size = end - begin;
+        status = cairo_truetype_font_align_output (font, &next);
+	if (unlikely (status))
+	    goto FAIL;
+
+        status = cairo_truetype_font_check_boundary (font, next);
+	if (unlikely (status))
+	    goto FAIL;
+
+        font->glyphs[i].location = next - start_offset;
+
+	status = cairo_truetype_font_allocate_write_buffer (font, size, &buffer);
+	if (unlikely (status))
+	    goto FAIL;
+
+	if (size > 1) {
+	    tt_glyph_data_t *glyph_data;
+	    int num_contours;
+
+	    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+							 TT_TAG_glyf, begin, buffer, &size);
+	    if (unlikely (status))
+		goto FAIL;
+
+	    glyph_data = (tt_glyph_data_t *) buffer;
+	    num_contours = (int16_t)be16_to_cpu (glyph_data->num_contours);
+	    if (num_contours < 0) {
+		status = cairo_truetype_font_remap_composite_glyph (font, buffer, size);
+		if (unlikely (status))
+		    goto FAIL;
+	    } else if (num_contours == 0) {
+		/* num_contours == 0 is undefined in the Opentype
+		 * spec. There are some embedded fonts that have a
+		 * space glyph with num_contours = 0 that fails on
+		 * some printers. The spec requires glyphs without
+		 * contours to have a 0 size glyph entry in the loca
+		 * table.
+		 *
+		 * If num_contours == 0, truncate the glyph to 0 size.
+		 */
+		_cairo_array_truncate (&font->output, _cairo_array_num_elements (&font->output) - size);
+	    }
+	}
+    }
+
+    status = cairo_truetype_font_align_output (font, &next);
+    if (unlikely (status))
+	goto FAIL;
+
+    font->glyphs[i].location = next - start_offset;
+
+    status = font->status;
+FAIL:
+    free (u.bytes);
+
+    return _cairo_truetype_font_set_error (font, status);
+}
+
+static cairo_status_t
+cairo_truetype_font_write_head_table (cairo_truetype_font_t *font,
+                                      unsigned long          tag)
+{
+    unsigned char *buffer;
+    unsigned long size;
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    size = 0;
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 tag, 0, NULL, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    font->checksum_index = _cairo_array_num_elements (&font->output) + 8;
+    status = cairo_truetype_font_allocate_write_buffer (font, size, &buffer);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 tag, 0, buffer, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    /* set checkSumAdjustment to 0 for table checksum calculation */
+    *(uint32_t *)(buffer + 8) = 0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_hhea_table (cairo_truetype_font_t *font, unsigned long tag)
+{
+    tt_hhea_t *hhea;
+    unsigned long size;
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    size = sizeof (tt_hhea_t);
+    status = cairo_truetype_font_allocate_write_buffer (font, size, (unsigned char **) &hhea);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 tag, 0, (unsigned char *) hhea, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    hhea->num_hmetrics = cpu_to_be16 ((uint16_t)(font->num_glyphs));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_hmtx_table (cairo_truetype_font_t *font,
+				      unsigned long          tag)
+{
+    unsigned long size;
+    unsigned long long_entry_size;
+    unsigned long short_entry_size;
+    short *p;
+    unsigned int i;
+    tt_hhea_t hhea;
+    int num_hmetrics;
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    size = sizeof (tt_hhea_t);
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 TT_TAG_hhea, 0,
+						 (unsigned char*) &hhea, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    num_hmetrics = be16_to_cpu(hhea.num_hmetrics);
+
+    for (i = 0; i < font->num_glyphs; i++) {
+        long_entry_size = 2 * sizeof (int16_t);
+        short_entry_size = sizeof (int16_t);
+        status = cairo_truetype_font_allocate_write_buffer (font,
+		                                            long_entry_size,
+							    (unsigned char **) &p);
+	if (unlikely (status))
+	    return _cairo_truetype_font_set_error (font, status);
+
+        if (font->glyphs[i].parent_index < num_hmetrics) {
+            status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                                         TT_TAG_hmtx,
+                                                         font->glyphs[i].parent_index * long_entry_size,
+                                                         (unsigned char *) p, &long_entry_size);
+	    if (unlikely (status))
+		return _cairo_truetype_font_set_error (font, status);
+        }
+        else
+        {
+            status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                                         TT_TAG_hmtx,
+							 (num_hmetrics - 1) * long_entry_size,
+							 (unsigned char *) p, &short_entry_size);
+	    if (unlikely (status))
+		return _cairo_truetype_font_set_error (font, status);
+
+            status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+							 TT_TAG_hmtx,
+							 num_hmetrics * long_entry_size +
+							 (font->glyphs[i].parent_index - num_hmetrics) * short_entry_size,
+							 (unsigned char *) (p + 1), &short_entry_size);
+	    if (unlikely (status))
+		return _cairo_truetype_font_set_error (font, status);
+        }
+        font->widths[i] = be16_to_cpu (p[0]);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_loca_table (cairo_truetype_font_t *font,
+				      unsigned long          tag)
+{
+    unsigned int i;
+    tt_head_t header;
+    unsigned long size;
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    size = sizeof(tt_head_t);
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 TT_TAG_head, 0,
+						 (unsigned char*) &header, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    if (be16_to_cpu (header.index_to_loc_format) == 0)
+    {
+	for (i = 0; i < font->num_glyphs + 1; i++)
+	    cairo_truetype_font_write_be16 (font, font->glyphs[i].location / 2);
+    } else {
+	for (i = 0; i < font->num_glyphs + 1; i++)
+	    cairo_truetype_font_write_be32 (font, font->glyphs[i].location);
+    }
+
+    return font->status;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_maxp_table (cairo_truetype_font_t *font,
+				      unsigned long          tag)
+{
+    tt_maxp_t *maxp;
+    unsigned long size;
+    cairo_status_t status;
+
+    if (font->status)
+	return font->status;
+
+    size = sizeof (tt_maxp_t);
+    status = cairo_truetype_font_allocate_write_buffer (font, size, (unsigned char **) &maxp);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+						 tag, 0, (unsigned char *) maxp, &size);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    maxp->num_glyphs = cpu_to_be16 (font->num_glyphs);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_truetype_font_write_offset_table (cairo_truetype_font_t *font)
+{
+    cairo_status_t status;
+    unsigned char *table_buffer;
+    size_t table_buffer_length;
+    unsigned short search_range, entry_selector, range_shift;
+
+    if (font->status)
+	return font->status;
+
+    search_range = 1;
+    entry_selector = 0;
+    while (search_range * 2 <= font->num_tables) {
+	search_range *= 2;
+	entry_selector++;
+    }
+    search_range *= 16;
+    range_shift = font->num_tables * 16 - search_range;
+
+    cairo_truetype_font_write_be32 (font, SFNT_VERSION);
+    cairo_truetype_font_write_be16 (font, font->num_tables);
+    cairo_truetype_font_write_be16 (font, search_range);
+    cairo_truetype_font_write_be16 (font, entry_selector);
+    cairo_truetype_font_write_be16 (font, range_shift);
+
+    /* Allocate space for the table directory. Each directory entry
+     * will be filled in by cairo_truetype_font_update_entry() after
+     * the table is written. */
+    table_buffer_length = font->num_tables * 16;
+    status = cairo_truetype_font_allocate_write_buffer (font, table_buffer_length,
+						      &table_buffer);
+    if (unlikely (status))
+	return _cairo_truetype_font_set_error (font, status);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static uint32_t
+cairo_truetype_font_calculate_checksum (cairo_truetype_font_t *font,
+					unsigned long          start,
+					unsigned long          end)
+{
+    uint32_t *padded_end;
+    uint32_t *p;
+    uint32_t checksum;
+    char *data;
+
+    checksum = 0;
+    data = _cairo_array_index (&font->output, 0);
+    p = (uint32_t *) (data + start);
+    padded_end = (uint32_t *) (data + ((end + 3) & ~3));
+    while (p < padded_end)
+	checksum += be32_to_cpu(*p++);
+
+    return checksum;
+}
+
+static void
+cairo_truetype_font_update_entry (cairo_truetype_font_t *font,
+				  int                    index,
+				  unsigned long          tag,
+				  unsigned long          start,
+				  unsigned long          end)
+{
+    uint32_t *entry;
+
+    entry = _cairo_array_index (&font->output, 12 + 16 * index);
+    entry[0] = cpu_to_be32 ((uint32_t)tag);
+    entry[1] = cpu_to_be32 (cairo_truetype_font_calculate_checksum (font, start, end));
+    entry[2] = cpu_to_be32 ((uint32_t)start);
+    entry[3] = cpu_to_be32 ((uint32_t)(end - start));
+}
+
+static cairo_status_t
+cairo_truetype_font_generate (cairo_truetype_font_t  *font,
+			      const char            **data,
+			      unsigned long          *length,
+			      const unsigned long   **string_offsets,
+			      unsigned long          *num_strings)
+{
+    cairo_status_t status;
+    unsigned long start, end, next;
+    uint32_t checksum, *checksum_location;
+    int i;
+
+    if (font->status)
+	return font->status;
+
+    status = cairo_truetype_font_write_offset_table (font);
+    if (unlikely (status))
+	goto FAIL;
+
+    status = cairo_truetype_font_align_output (font, &start);
+    if (unlikely (status))
+	goto FAIL;
+
+    end = 0;
+    for (i = 0; i < font->num_tables; i++) {
+	status = font->truetype_tables[i].write (font, font->truetype_tables[i].tag);
+	if (unlikely (status))
+	    goto FAIL;
+
+	end = _cairo_array_num_elements (&font->output);
+	status = cairo_truetype_font_align_output (font, &next);
+	if (unlikely (status))
+	    goto FAIL;
+
+	cairo_truetype_font_update_entry (font, font->truetype_tables[i].pos,
+                                          font->truetype_tables[i].tag, start, end);
+        status = cairo_truetype_font_check_boundary (font, next);
+	if (unlikely (status))
+	    goto FAIL;
+
+	start = next;
+    }
+
+    checksum =
+	0xb1b0afba - cairo_truetype_font_calculate_checksum (font, 0, end);
+    checksum_location = _cairo_array_index (&font->output, font->checksum_index);
+    *checksum_location = cpu_to_be32 (checksum);
+
+    *data = _cairo_array_index (&font->output, 0);
+    *length = _cairo_array_num_elements (&font->output);
+    *num_strings = _cairo_array_num_elements (&font->string_offsets);
+    if (*num_strings != 0)
+	*string_offsets = _cairo_array_index (&font->string_offsets, 0);
+    else
+	*string_offsets = NULL;
+
+ FAIL:
+    return _cairo_truetype_font_set_error (font, status);
+}
+
+static cairo_status_t
+cairo_truetype_font_use_glyph (cairo_truetype_font_t	    *font,
+	                       unsigned short		     glyph,
+			       unsigned short		    *out)
+{
+    if (glyph >= font->base.num_glyphs_in_face)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (font->parent_to_subset[glyph] == 0) {
+	font->parent_to_subset[glyph] = font->num_glyphs;
+	font->glyphs[font->num_glyphs].parent_index = glyph;
+	font->num_glyphs++;
+    }
+
+    *out = font->parent_to_subset[glyph];
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+cairo_truetype_font_add_truetype_table (cairo_truetype_font_t *font,
+           unsigned long tag,
+           cairo_status_t (*write) (cairo_truetype_font_t *font, unsigned long tag),
+           int pos)
+{
+    font->truetype_tables[font->num_tables].tag = tag;
+    font->truetype_tables[font->num_tables].write = write;
+    font->truetype_tables[font->num_tables].pos = pos;
+    font->num_tables++;
+}
+
+/* cairo_truetype_font_create_truetype_table_list() builds the list of
+ * truetype tables to be embedded in the subsetted font. Each call to
+ * cairo_truetype_font_add_truetype_table() adds a table, the callback
+ * for generating the table, and the position in the table directory
+ * to the truetype_tables array.
+ *
+ * As we write out the glyf table we remap composite glyphs.
+ * Remapping composite glyphs will reference the sub glyphs the
+ * composite glyph is made up of. The "glyf" table callback needs to
+ * be called first so we have all the glyphs in the subset before
+ * going further.
+ *
+ * The order in which tables are added to the truetype_table array
+ * using cairo_truetype_font_add_truetype_table() specifies the order
+ * in which the callback functions will be called.
+ *
+ * The tables in the table directory must be listed in alphabetical
+ * order.  The "cvt", "fpgm", and "prep" are optional tables. They
+ * will only be embedded in the subset if they exist in the source
+ * font. "cmap" is only embedded for latin fonts. The pos parameter of
+ * cairo_truetype_font_add_truetype_table() specifies the position of
+ * the table in the table directory.
+ */
+static void
+cairo_truetype_font_create_truetype_table_list (cairo_truetype_font_t *font)
+{
+    cairo_bool_t has_cvt = FALSE;
+    cairo_bool_t has_fpgm = FALSE;
+    cairo_bool_t has_prep = FALSE;
+    unsigned long size;
+    int pos;
+
+    size = 0;
+    if (font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                      TT_TAG_cvt, 0, NULL,
+                                      &size) == CAIRO_INT_STATUS_SUCCESS)
+        has_cvt = TRUE;
+
+    size = 0;
+    if (font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                      TT_TAG_fpgm, 0, NULL,
+                                      &size) == CAIRO_INT_STATUS_SUCCESS)
+        has_fpgm = TRUE;
+
+    size = 0;
+    if (font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
+                                      TT_TAG_prep, 0, NULL,
+                                      &size) == CAIRO_INT_STATUS_SUCCESS)
+        has_prep = TRUE;
+
+    font->num_tables = 0;
+    pos = 0;
+    if (font->is_pdf && font->scaled_font_subset->is_latin)
+	pos++;
+    if (has_cvt)
+        pos++;
+    if (has_fpgm)
+        pos++;
+    cairo_truetype_font_add_truetype_table (font, TT_TAG_glyf, cairo_truetype_font_write_glyf_table, pos);
+
+    pos = 0;
+    if (font->is_pdf && font->scaled_font_subset->is_latin)
+	cairo_truetype_font_add_truetype_table (font, TT_TAG_cmap, cairo_truetype_font_write_cmap_table, pos++);
+    if (has_cvt)
+        cairo_truetype_font_add_truetype_table (font, TT_TAG_cvt, cairo_truetype_font_write_generic_table, pos++);
+    if (has_fpgm)
+        cairo_truetype_font_add_truetype_table (font, TT_TAG_fpgm, cairo_truetype_font_write_generic_table, pos++);
+    pos++;
+    cairo_truetype_font_add_truetype_table (font, TT_TAG_head, cairo_truetype_font_write_head_table, pos++);
+    cairo_truetype_font_add_truetype_table (font, TT_TAG_hhea, cairo_truetype_font_write_hhea_table, pos++);
+    cairo_truetype_font_add_truetype_table (font, TT_TAG_hmtx, cairo_truetype_font_write_hmtx_table, pos++);
+    cairo_truetype_font_add_truetype_table (font, TT_TAG_loca, cairo_truetype_font_write_loca_table, pos++);
+    cairo_truetype_font_add_truetype_table (font, TT_TAG_maxp, cairo_truetype_font_write_maxp_table, pos++);
+    if (has_prep)
+        cairo_truetype_font_add_truetype_table (font, TT_TAG_prep, cairo_truetype_font_write_generic_table, pos);
+}
+
+static cairo_status_t
+cairo_truetype_subset_init_internal (cairo_truetype_subset_t     *truetype_subset,
+				      cairo_scaled_font_subset_t *font_subset,
+				      cairo_bool_t                is_pdf)
+{
+    cairo_truetype_font_t *font = NULL;
+    cairo_status_t status;
+    const char *data = NULL; /* squelch bogus compiler warning */
+    unsigned long length = 0; /* squelch bogus compiler warning */
+    unsigned long offsets_length;
+    unsigned int i;
+    const unsigned long *string_offsets = NULL;
+    unsigned long num_strings = 0;
+
+    status = _cairo_truetype_font_create (font_subset, is_pdf, &font);
+    if (unlikely (status))
+	return status;
+
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+	unsigned short parent_glyph = font->scaled_font_subset->glyphs[i];
+	status = cairo_truetype_font_use_glyph (font, parent_glyph, &parent_glyph);
+	if (unlikely (status))
+	    goto fail1;
+    }
+
+    cairo_truetype_font_create_truetype_table_list (font);
+    status = cairo_truetype_font_generate (font, &data, &length,
+                                           &string_offsets, &num_strings);
+    if (unlikely (status))
+	goto fail1;
+
+    truetype_subset->ps_name = strdup (font->base.ps_name);
+    if (unlikely (truetype_subset->ps_name == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail1;
+    }
+
+    if (font->base.font_name != NULL) {
+	truetype_subset->family_name_utf8 = strdup (font->base.font_name);
+	if (unlikely (truetype_subset->family_name_utf8 == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail2;
+	}
+    } else {
+	truetype_subset->family_name_utf8 = NULL;
+    }
+
+    /* The widths array returned must contain only widths for the
+     * glyphs in font_subset. Any subglyphs appended after
+     * font_subset->num_glyphs are omitted. */
+    truetype_subset->widths = calloc (sizeof (double),
+                                      font->scaled_font_subset->num_glyphs);
+    if (unlikely (truetype_subset->widths == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail3;
+    }
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++)
+	truetype_subset->widths[i] = (double)font->widths[i]/font->base.units_per_em;
+
+    truetype_subset->x_min = (double)font->base.x_min/font->base.units_per_em;
+    truetype_subset->y_min = (double)font->base.y_min/font->base.units_per_em;
+    truetype_subset->x_max = (double)font->base.x_max/font->base.units_per_em;
+    truetype_subset->y_max = (double)font->base.y_max/font->base.units_per_em;
+    truetype_subset->ascent = (double)font->base.ascent/font->base.units_per_em;
+    truetype_subset->descent = (double)font->base.descent/font->base.units_per_em;
+
+    if (length) {
+	truetype_subset->data = _cairo_malloc (length);
+	if (unlikely (truetype_subset->data == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail4;
+	}
+
+	memcpy (truetype_subset->data, data, length);
+    } else
+	truetype_subset->data = NULL;
+    truetype_subset->data_length = length;
+
+    if (num_strings) {
+	offsets_length = num_strings * sizeof (unsigned long);
+	truetype_subset->string_offsets = _cairo_malloc (offsets_length);
+	if (unlikely (truetype_subset->string_offsets == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail5;
+	}
+
+	memcpy (truetype_subset->string_offsets, string_offsets, offsets_length);
+	truetype_subset->num_string_offsets = num_strings;
+    } else {
+	truetype_subset->string_offsets = NULL;
+	truetype_subset->num_string_offsets = 0;
+    }
+
+    cairo_truetype_font_destroy (font);
+
+    return CAIRO_STATUS_SUCCESS;
+
+ fail5:
+    free (truetype_subset->data);
+ fail4:
+    free (truetype_subset->widths);
+ fail3:
+    free (truetype_subset->family_name_utf8);
+ fail2:
+    free (truetype_subset->ps_name);
+ fail1:
+    cairo_truetype_font_destroy (font);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_truetype_subset_init_ps (cairo_truetype_subset_t    *truetype_subset,
+				cairo_scaled_font_subset_t	*font_subset)
+{
+    return cairo_truetype_subset_init_internal (truetype_subset, font_subset, FALSE);
+}
+
+cairo_status_t
+_cairo_truetype_subset_init_pdf (cairo_truetype_subset_t    *truetype_subset,
+				cairo_scaled_font_subset_t	*font_subset)
+{
+    return cairo_truetype_subset_init_internal (truetype_subset, font_subset, TRUE);
+}
+
+void
+_cairo_truetype_subset_fini (cairo_truetype_subset_t *subset)
+{
+    free (subset->ps_name);
+    free (subset->family_name_utf8);
+    free (subset->widths);
+    free (subset->data);
+    free (subset->string_offsets);
+}
+
+static cairo_int_status_t
+_cairo_truetype_reverse_cmap (cairo_scaled_font_t *scaled_font,
+			      unsigned long        table_offset,
+			      unsigned long        index,
+			      uint32_t            *ucs4)
+{
+    cairo_status_t status;
+    const cairo_scaled_font_backend_t *backend;
+    tt_segment_map_t *map;
+    char buf[4];
+    unsigned int num_segments, i;
+    unsigned long size;
+    uint16_t *start_code;
+    uint16_t *end_code;
+    uint16_t *delta;
+    uint16_t *range_offset;
+    uint16_t  c;
+
+    backend = scaled_font->backend;
+    size = 4;
+    status = backend->load_truetype_table (scaled_font,
+                                           TT_TAG_cmap, table_offset,
+					   (unsigned char *) &buf,
+					   &size);
+    if (unlikely (status))
+	return status;
+
+    /* All table formats have the same first two words */
+    map = (tt_segment_map_t *) buf;
+    if (be16_to_cpu (map->format) != 4)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = be16_to_cpu (map->length);
+    map = _cairo_malloc (size);
+    if (unlikely (map == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = backend->load_truetype_table (scaled_font,
+                                           TT_TAG_cmap, table_offset,
+                                           (unsigned char *) map,
+                                           &size);
+    if (unlikely (status))
+	goto fail;
+
+    num_segments = be16_to_cpu (map->segCountX2)/2;
+
+    /* A Format 4 cmap contains 8 uint16_t numbers and 4 arrays of
+     * uint16_t each num_segments long. */
+    if (size < (8 + 4*num_segments)*sizeof(uint16_t))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    end_code = map->endCount;
+    start_code = &(end_code[num_segments + 1]);
+    delta = &(start_code[num_segments]);
+    range_offset = &(delta[num_segments]);
+
+    /* search for glyph in segments with rangeOffset=0 */
+    for (i = 0; i < num_segments; i++) {
+	uint16_t start = be16_to_cpu (start_code[i]);
+	uint16_t end = be16_to_cpu (end_code[i]);
+
+	if (start == 0xffff && end == 0xffff)
+	    break;
+
+	c = index - be16_to_cpu (delta[i]);
+	if (range_offset[i] == 0 && c >= start && c <= end) {
+	    *ucs4 = c;
+	    goto found;
+	}
+    }
+
+    /* search for glyph in segments with rangeOffset=1 */
+    for (i = 0; i < num_segments; i++) {
+	uint16_t start = be16_to_cpu (start_code[i]);
+	uint16_t end = be16_to_cpu (end_code[i]);
+
+	if (start == 0xffff && end == 0xffff)
+	    break;
+
+	if (range_offset[i] != 0) {
+	    uint16_t *glyph_ids = &range_offset[i] + be16_to_cpu (range_offset[i])/2;
+	    int range_size = end - start + 1;
+	    uint16_t g_id_be = cpu_to_be16 (index);
+	    int j;
+
+	    if (range_size > 0) {
+		if ((char*)glyph_ids + 2*range_size > (char*)map + size)
+		    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+		for (j = 0; j < range_size; j++) {
+		    if (glyph_ids[j] == g_id_be) {
+			*ucs4 = start + j;
+			goto found;
+		    }
+		}
+	    }
+	}
+    }
+
+    /* glyph not found */
+    *ucs4 = -1;
+
+found:
+    status = CAIRO_STATUS_SUCCESS;
+
+fail:
+    free (map);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_truetype_index_to_ucs4 (cairo_scaled_font_t *scaled_font,
+                               unsigned long        index,
+                               uint32_t            *ucs4)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+    const cairo_scaled_font_backend_t *backend;
+    tt_cmap_t *cmap;
+    char buf[4];
+    int num_tables, i;
+    unsigned long size;
+
+    backend = scaled_font->backend;
+    if (!backend->load_truetype_table)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = 4;
+    status = backend->load_truetype_table (scaled_font,
+                                           TT_TAG_cmap, 0,
+					   (unsigned char *) &buf,
+					   &size);
+    if (unlikely (status))
+	return status;
+
+    cmap = (tt_cmap_t *) buf;
+    num_tables = be16_to_cpu (cmap->num_tables);
+    size = 4 + num_tables*sizeof(tt_cmap_index_t);
+    cmap = _cairo_malloc_ab_plus_c (num_tables, sizeof (tt_cmap_index_t), 4);
+    if (unlikely (cmap == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = backend->load_truetype_table (scaled_font,
+	                                   TT_TAG_cmap, 0,
+					   (unsigned char *) cmap,
+					   &size);
+    if (unlikely (status))
+        goto cleanup;
+
+    /* Find a table with Unicode mapping */
+    for (i = 0; i < num_tables; i++) {
+        if (be16_to_cpu (cmap->index[i].platform) == 3 &&
+            be16_to_cpu (cmap->index[i].encoding) == 1) {
+            status = _cairo_truetype_reverse_cmap (scaled_font,
+						   be32_to_cpu (cmap->index[i].offset),
+						   index,
+						   ucs4);
+            if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+                break;
+        }
+    }
+
+cleanup:
+    free (cmap);
+
+    return status;
+}
+
+/*
+ * Sanity check on font name length as some broken fonts may return very long
+ * strings of garbage. 127 is maximum length of a PS name.
+ */
+#define MAX_FONT_NAME_LENGTH 127
+
+static cairo_status_t
+find_name (tt_name_t *name, int name_id, int platform, int encoding, int language, char **str_out)
+{
+    tt_name_record_t *record;
+    int i, len;
+    char *str;
+    char *p;
+    cairo_bool_t has_tag;
+    cairo_status_t status;
+
+    str = NULL;
+    for (i = 0; i < be16_to_cpu (name->num_records); i++) {
+        record = &(name->records[i]);
+	if (be16_to_cpu (record->name) == name_id &&
+	    be16_to_cpu (record->platform) == platform &&
+            be16_to_cpu (record->encoding) == encoding &&
+	    (language == -1 || be16_to_cpu (record->language) == language)) {
+
+	    len = be16_to_cpu (record->length);
+	    if (platform == 3 && len > MAX_FONT_NAME_LENGTH*2) /* UTF-16 name */
+		break;
+
+	    if (len > MAX_FONT_NAME_LENGTH)
+		break;
+
+	    str = _cairo_malloc (len + 1);
+	    if (str == NULL)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	    memcpy (str,
+		    ((char*)name) + be16_to_cpu (name->strings_offset) + be16_to_cpu (record->offset),
+		    len);
+	    str[be16_to_cpu (record->length)] = 0;
+	    break;
+	}
+    }
+    if (str == NULL) {
+	*str_out = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (platform == 3) { /* Win platform, unicode encoding */
+	/* convert to utf8 */
+	int size = 0;
+	char *utf8;
+	uint16_t *u = (uint16_t *) str;
+	int u_len = len/2;
+
+	for (i = 0; i < u_len; i++)
+	    size += _cairo_ucs4_to_utf8 (be16_to_cpu(u[i]), NULL);
+
+	utf8 = _cairo_malloc (size + 1);
+	if (utf8 == NULL) {
+	    status =_cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail;
+	}
+	p = utf8;
+	for (i = 0; i < u_len; i++)
+	    p += _cairo_ucs4_to_utf8 (be16_to_cpu(u[i]), p);
+	*p = 0;
+	free (str);
+	str = utf8;
+    } else if (platform == 1) { /* Mac platform, Mac Roman encoding */
+	/* Replace characters above 127 with underscores. We could use
+	 * a lookup table to convert to unicode but since most fonts
+	 * include a unicode name this is just a rarely used fallback. */
+	for (i = 0; i < len; i++) {
+	    if ((unsigned char)str[i] > 127)
+		str[i] = '_';
+	}
+    }
+
+    /* If font name is prefixed with a PDF subset tag, strip it off. */
+    p = str;
+    len = strlen (str);
+    has_tag = FALSE;
+    if (len > 7 && p[6] == '+') {
+	has_tag = TRUE;
+	for (i = 0; i < 6; i++) {
+	    if (p[i] < 'A' || p[i] > 'Z') {
+		has_tag = FALSE;
+		break;
+	    }
+	}
+    }
+    if (has_tag) {
+	p = _cairo_malloc (len - 6);
+	if (unlikely (p == NULL)) {
+	    status =_cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto fail;
+	}
+	memcpy (p, str + 7, len - 7);
+	p[len-7] = 0;
+	free (str);
+	str = p;
+    }
+
+    *str_out = str;
+
+    return CAIRO_STATUS_SUCCESS;
+
+  fail:
+    free (str);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_truetype_read_font_name (cairo_scaled_font_t  	 *scaled_font,
+				char 	       		**ps_name_out,
+				char 	       		**font_name_out)
+{
+    cairo_status_t status;
+    const cairo_scaled_font_backend_t *backend;
+    tt_name_t *name;
+    unsigned long size;
+    char *ps_name = NULL;
+    char *family_name = NULL;
+
+    backend = scaled_font->backend;
+    if (!backend->load_truetype_table)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = 0;
+    status = backend->load_truetype_table (scaled_font,
+	                                   TT_TAG_name, 0,
+					   NULL,
+					   &size);
+    if (status)
+	return status;
+
+    name = _cairo_malloc (size);
+    if (name == NULL)
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = backend->load_truetype_table (scaled_font,
+					   TT_TAG_name, 0,
+					   (unsigned char *) name,
+					   &size);
+    if (status)
+	goto fail;
+
+    /* Find PS Name (name_id = 6). OT spec says PS name must be one of
+     * the following two encodings */
+    status = find_name (name, 6, 3, 1, 0x409, &ps_name); /* win, unicode, english-us */
+    if (unlikely(status))
+	goto fail;
+
+    if (!ps_name) {
+	status = find_name (name, 6, 1, 0, 0, &ps_name); /* mac, roman, english */
+	if (unlikely(status))
+	    goto fail;
+    }
+
+    /* Find Family name (name_id = 1) */
+    status = find_name (name, 1, 3, 1, 0x409, &family_name); /* win, unicode, english-us */
+    if (unlikely(status))
+	goto fail;
+
+    if (!family_name) {
+	status = find_name (name, 1, 3, 0, 0x409, &family_name); /* win, symbol, english-us */
+	if (unlikely(status))
+	    goto fail;
+    }
+
+    if (!family_name) {
+	status = find_name (name, 1, 1, 0, 0, &family_name); /* mac, roman, english */
+	if (unlikely(status))
+	    goto fail;
+    }
+
+    if (!family_name) {
+	status = find_name (name, 1, 3, 1, -1, &family_name); /* win, unicode, any language */
+	if (unlikely(status))
+	    goto fail;
+    }
+
+    status = _cairo_escape_ps_name (&ps_name);
+    if (unlikely(status))
+	goto fail;
+
+    free (name);
+
+    *ps_name_out = ps_name;
+    *font_name_out = family_name;
+
+    return CAIRO_STATUS_SUCCESS;
+
+fail:
+    free (name);
+    free (ps_name);
+    free (family_name);
+    *ps_name_out = NULL;
+    *font_name_out = NULL;
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_truetype_get_style (cairo_scaled_font_t  	 *scaled_font,
+			   int				 *weight,
+			   cairo_bool_t			 *bold,
+			   cairo_bool_t			 *italic)
+{
+    cairo_status_t status;
+    const cairo_scaled_font_backend_t *backend;
+    tt_os2_t os2;
+    unsigned long size;
+    uint16_t selection;
+
+    backend = scaled_font->backend;
+    if (!backend->load_truetype_table)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = 0;
+    status = backend->load_truetype_table (scaled_font,
+					   TT_TAG_OS2, 0,
+					   NULL,
+					   &size);
+    if (status)
+	return status;
+
+    if (size < sizeof(os2))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = sizeof (os2);
+    status = backend->load_truetype_table (scaled_font,
+					   TT_TAG_OS2, 0,
+					   (unsigned char *) &os2,
+					   &size);
+    if (status)
+	return status;
+
+    *weight = be16_to_cpu (os2.usWeightClass);
+    selection = be16_to_cpu (os2.fsSelection);
+    *bold = (selection & TT_FS_SELECTION_BOLD) ? TRUE : FALSE;
+    *italic = (selection & TT_FS_SELECTION_ITALIC) ? TRUE : FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-type1-fallback.c b/libs/cairo-1.16.0/src/cairo-type1-fallback.c
new file mode 100644
index 0000000..0b8e66c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-type1-fallback.c
@@ -0,0 +1,903 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-type1-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-output-stream-private.h"
+
+typedef enum {
+    CAIRO_CHARSTRING_TYPE1,
+    CAIRO_CHARSTRING_TYPE2
+} cairo_charstring_type_t;
+
+typedef struct _cairo_type1_font {
+    int *widths;
+
+    cairo_scaled_font_subset_t *scaled_font_subset;
+    cairo_scaled_font_t        *type1_scaled_font;
+
+    cairo_array_t contents;
+
+    double x_min, y_min, x_max, y_max;
+
+    const char    *data;
+    unsigned long  header_size;
+    unsigned long  data_size;
+    unsigned long  trailer_size;
+    int            bbox_position;
+    int            bbox_max_chars;
+
+    cairo_output_stream_t *output;
+
+    unsigned short eexec_key;
+    cairo_bool_t hex_encode;
+    int hex_column;
+} cairo_type1_font_t;
+
+static cairo_status_t
+cairo_type1_font_create (cairo_scaled_font_subset_t  *scaled_font_subset,
+                         cairo_type1_font_t         **subset_return,
+                         cairo_bool_t                 hex_encode)
+{
+    cairo_type1_font_t *font;
+    cairo_font_face_t *font_face;
+    cairo_matrix_t font_matrix;
+    cairo_matrix_t ctm;
+    cairo_font_options_t font_options;
+    cairo_status_t status;
+
+    font = calloc (1, sizeof (cairo_type1_font_t));
+    if (unlikely (font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    font->widths = calloc (scaled_font_subset->num_glyphs, sizeof (int));
+    if (unlikely (font->widths == NULL)) {
+	free (font);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    font->scaled_font_subset = scaled_font_subset;
+    font->hex_encode = hex_encode;
+
+    font_face = cairo_scaled_font_get_font_face (scaled_font_subset->scaled_font);
+
+    cairo_matrix_init_scale (&font_matrix, 1000, -1000);
+    cairo_matrix_init_identity (&ctm);
+
+    _cairo_font_options_init_default (&font_options);
+    cairo_font_options_set_hint_style (&font_options, CAIRO_HINT_STYLE_NONE);
+    cairo_font_options_set_hint_metrics (&font_options, CAIRO_HINT_METRICS_OFF);
+
+    font->type1_scaled_font = cairo_scaled_font_create (font_face,
+							&font_matrix,
+							&ctm,
+							&font_options);
+    status = font->type1_scaled_font->status;
+    if (unlikely (status))
+        goto fail;
+
+    _cairo_array_init (&font->contents, sizeof (unsigned char));
+    font->output = NULL;
+
+    *subset_return = font;
+
+    return CAIRO_STATUS_SUCCESS;
+
+fail:
+    free (font->widths);
+    free (font);
+
+    return status;
+}
+
+/* Charstring commands. If the high byte is 0 the command is encoded
+ * with a single byte. */
+#define CHARSTRING_sbw        0x0c07
+#define CHARSTRING_rmoveto    0x0015
+#define CHARSTRING_rlineto    0x0005
+#define CHARSTRING_rcurveto   0x0008
+#define CHARSTRING_closepath  0x0009
+#define CHARSTRING_endchar    0x000e
+
+/* Before calling this function, the caller must allocate sufficient
+ * space in data (see _cairo_array_grow_by). The maximum number of
+ * bytes that will be used is 2.
+ */
+static void
+charstring_encode_command (cairo_array_t *data, int command)
+{
+    cairo_status_t status;
+    unsigned int orig_size;
+    unsigned char buf[5];
+    unsigned char *p = buf;
+
+    if (command & 0xff00)
+        *p++ = command >> 8;
+    *p++ = command & 0x00ff;
+
+    /* Ensure the array doesn't grow, which allows this function to
+     * have no possibility of failure. */
+    orig_size = _cairo_array_size (data);
+    status = _cairo_array_append_multiple (data, buf, p - buf);
+
+    assert (status == CAIRO_STATUS_SUCCESS);
+    assert (_cairo_array_size (data) == orig_size);
+}
+
+/* Before calling this function, the caller must allocate sufficient
+ * space in data (see _cairo_array_grow_by). The maximum number of
+ * bytes that will be used is 5.
+ */
+static void
+charstring_encode_integer (cairo_array_t *data,
+                           int i,
+                           cairo_charstring_type_t type)
+{
+    cairo_status_t status;
+    unsigned int orig_size;
+    unsigned char buf[10];
+    unsigned char *p = buf;
+
+    if (i >= -107 && i <= 107) {
+        *p++ = i + 139;
+    } else if (i >= 108 && i <= 1131) {
+        i -= 108;
+        *p++ = (i >> 8)+ 247;
+        *p++ = i & 0xff;
+    } else if (i >= -1131 && i <= -108) {
+        i = -i - 108;
+        *p++ = (i >> 8)+ 251;
+        *p++ = i & 0xff;
+    } else {
+        if (type == CAIRO_CHARSTRING_TYPE1) {
+            *p++ = 0xff;
+            *p++ = i >> 24;
+            *p++ = (i >> 16) & 0xff;
+            *p++ = (i >> 8)  & 0xff;
+            *p++ = i & 0xff;
+        } else {
+            *p++ = 0xff;
+            *p++ = (i >> 8)  & 0xff;
+            *p++ = i & 0xff;
+            *p++ = 0;
+            *p++ = 0;
+        }
+    }
+
+    /* Ensure the array doesn't grow, which allows this function to
+     * have no possibility of failure. */
+    orig_size = _cairo_array_size (data);
+    status = _cairo_array_append_multiple (data, buf, p - buf);
+
+    assert (status == CAIRO_STATUS_SUCCESS);
+    assert (_cairo_array_size (data) == orig_size);
+}
+
+typedef struct _ps_path_info {
+    cairo_array_t *data;
+    int current_x, current_y;
+    cairo_charstring_type_t type;
+} t1_path_info_t;
+
+static cairo_status_t
+_charstring_move_to (void		    *closure,
+                     const cairo_point_t    *point)
+{
+    t1_path_info_t *path_info = (t1_path_info_t *) closure;
+    int dx, dy;
+    cairo_status_t status;
+
+    status = _cairo_array_grow_by (path_info->data, 12);
+    if (unlikely (status))
+        return status;
+
+    dx = _cairo_fixed_integer_part (point->x) - path_info->current_x;
+    dy = _cairo_fixed_integer_part (point->y) - path_info->current_y;
+    charstring_encode_integer (path_info->data, dx, path_info->type);
+    charstring_encode_integer (path_info->data, dy, path_info->type);
+    path_info->current_x += dx;
+    path_info->current_y += dy;
+
+    charstring_encode_command (path_info->data, CHARSTRING_rmoveto);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_charstring_line_to (void		    *closure,
+                     const cairo_point_t    *point)
+{
+    t1_path_info_t *path_info = (t1_path_info_t *) closure;
+    int dx, dy;
+    cairo_status_t status;
+
+    status = _cairo_array_grow_by (path_info->data, 12);
+    if (unlikely (status))
+        return status;
+
+    dx = _cairo_fixed_integer_part (point->x) - path_info->current_x;
+    dy = _cairo_fixed_integer_part (point->y) - path_info->current_y;
+    charstring_encode_integer (path_info->data, dx, path_info->type);
+    charstring_encode_integer (path_info->data, dy, path_info->type);
+    path_info->current_x += dx;
+    path_info->current_y += dy;
+
+    charstring_encode_command (path_info->data, CHARSTRING_rlineto);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_charstring_curve_to (void		    *closure,
+                      const cairo_point_t   *point1,
+                      const cairo_point_t   *point2,
+                      const cairo_point_t   *point3)
+{
+    t1_path_info_t *path_info = (t1_path_info_t *) closure;
+    int dx1, dy1, dx2, dy2, dx3, dy3;
+    cairo_status_t status;
+
+    status = _cairo_array_grow_by (path_info->data, 32);
+    if (unlikely (status))
+        return status;
+
+    dx1 = _cairo_fixed_integer_part (point1->x) - path_info->current_x;
+    dy1 = _cairo_fixed_integer_part (point1->y) - path_info->current_y;
+    dx2 = _cairo_fixed_integer_part (point2->x) - path_info->current_x - dx1;
+    dy2 = _cairo_fixed_integer_part (point2->y) - path_info->current_y - dy1;
+    dx3 = _cairo_fixed_integer_part (point3->x) - path_info->current_x - dx1 - dx2;
+    dy3 = _cairo_fixed_integer_part (point3->y) - path_info->current_y - dy1 - dy2;
+    charstring_encode_integer (path_info->data, dx1, path_info->type);
+    charstring_encode_integer (path_info->data, dy1, path_info->type);
+    charstring_encode_integer (path_info->data, dx2, path_info->type);
+    charstring_encode_integer (path_info->data, dy2, path_info->type);
+    charstring_encode_integer (path_info->data, dx3, path_info->type);
+    charstring_encode_integer (path_info->data, dy3, path_info->type);
+    path_info->current_x += dx1 + dx2 + dx3;
+    path_info->current_y += dy1 + dy2 + dy3;
+    charstring_encode_command (path_info->data, CHARSTRING_rcurveto);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_charstring_close_path (void *closure)
+{
+    cairo_status_t status;
+    t1_path_info_t *path_info = (t1_path_info_t *) closure;
+
+    if (path_info->type == CAIRO_CHARSTRING_TYPE2)
+        return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_array_grow_by (path_info->data, 2);
+    if (unlikely (status))
+	return status;
+
+    charstring_encode_command (path_info->data, CHARSTRING_closepath);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+charstring_encrypt (cairo_array_t *data)
+{
+    unsigned char *d, *end;
+    uint16_t c, p, r;
+
+    r = CAIRO_TYPE1_CHARSTRING_KEY;
+    d = (unsigned char *) _cairo_array_index (data, 0);
+    end = d + _cairo_array_num_elements (data);
+    while (d < end) {
+	p = *d;
+	c = p ^ (r >> 8);
+	r = (c + r) * CAIRO_TYPE1_ENCRYPT_C1 + CAIRO_TYPE1_ENCRYPT_C2;
+        *d++ = c;
+    }
+}
+
+static cairo_int_status_t
+cairo_type1_font_create_charstring (cairo_type1_font_t      *font,
+                                    int                      subset_index,
+                                    int                      glyph_index,
+                                    cairo_charstring_type_t  type,
+                                    cairo_array_t           *data)
+{
+    cairo_int_status_t status;
+    cairo_scaled_glyph_t *scaled_glyph;
+    t1_path_info_t path_info;
+    cairo_text_extents_t *metrics;
+    cairo_bool_t emit_path = TRUE;
+
+    /* This call may return CAIRO_INT_STATUS_UNSUPPORTED for bitmap fonts. */
+    status = _cairo_scaled_glyph_lookup (font->type1_scaled_font,
+					 glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS|
+					 CAIRO_SCALED_GLYPH_INFO_PATH,
+					 &scaled_glyph);
+
+    /* It is ok for the .notdef glyph to not have a path available. We
+     * just need the metrics to emit an empty glyph.  */
+    if (glyph_index == 0 && status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	emit_path = FALSE;
+	status = _cairo_scaled_glyph_lookup (font->type1_scaled_font,
+					     glyph_index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+    }
+    if (unlikely (status))
+        return status;
+
+    metrics = &scaled_glyph->metrics;
+    if (subset_index == 0) {
+        font->x_min = metrics->x_bearing;
+        font->y_min = metrics->y_bearing;
+        font->x_max = metrics->x_bearing + metrics->width;
+        font->y_max = metrics->y_bearing + metrics->height;
+    } else {
+        if (metrics->x_bearing < font->x_min)
+            font->x_min = metrics->x_bearing;
+        if (metrics->y_bearing < font->y_min)
+            font->y_min = metrics->y_bearing;
+        if (metrics->x_bearing + metrics->width > font->x_max)
+            font->x_max = metrics->x_bearing + metrics->width;
+        if (metrics->y_bearing + metrics->height > font->y_max)
+            font->y_max = metrics->y_bearing + metrics->height;
+    }
+    font->widths[subset_index] = metrics->x_advance;
+
+    status = _cairo_array_grow_by (data, 30);
+    if (unlikely (status))
+        return status;
+
+    if (type == CAIRO_CHARSTRING_TYPE1) {
+        charstring_encode_integer (data, (int) scaled_glyph->metrics.x_bearing, type);
+        charstring_encode_integer (data, (int) scaled_glyph->metrics.y_bearing, type);
+        charstring_encode_integer (data, (int) scaled_glyph->metrics.x_advance, type);
+        charstring_encode_integer (data, (int) scaled_glyph->metrics.y_advance, type);
+        charstring_encode_command (data, CHARSTRING_sbw);
+
+        path_info.current_x = (int) scaled_glyph->metrics.x_bearing;
+        path_info.current_y = (int) scaled_glyph->metrics.y_bearing;
+    } else {
+        charstring_encode_integer (data, (int) scaled_glyph->metrics.x_advance, type);
+
+        path_info.current_x = 0;
+        path_info.current_y = 0;
+    }
+    path_info.data = data;
+    path_info.type = type;
+    if (emit_path) {
+	status = _cairo_path_fixed_interpret (scaled_glyph->path,
+					      _charstring_move_to,
+					      _charstring_line_to,
+					      _charstring_curve_to,
+					      _charstring_close_path,
+					      &path_info);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = _cairo_array_grow_by (data, 1);
+    if (unlikely (status))
+        return status;
+    charstring_encode_command (path_info.data, CHARSTRING_endchar);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_type1_font_write_charstrings (cairo_type1_font_t    *font,
+                                    cairo_output_stream_t *encrypted_output)
+{
+    cairo_status_t status;
+    unsigned char zeros[] = { 0, 0, 0, 0 };
+    cairo_array_t data;
+    unsigned int i;
+    int length;
+
+    _cairo_array_init (&data, sizeof (unsigned char));
+    status = _cairo_array_grow_by (&data, 1024);
+    if (unlikely (status))
+        goto fail;
+
+    _cairo_output_stream_printf (encrypted_output,
+                                 "2 index /CharStrings %d dict dup begin\n",
+                                 font->scaled_font_subset->num_glyphs + 1);
+
+    _cairo_scaled_font_freeze_cache (font->type1_scaled_font);
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+        _cairo_array_truncate (&data, 0);
+        /* four "random" bytes required by encryption algorithm */
+        status = _cairo_array_append_multiple (&data, zeros, 4);
+        if (unlikely (status))
+	    break;
+
+        status = cairo_type1_font_create_charstring (font, i,
+						     font->scaled_font_subset->glyphs[i],
+                                                     CAIRO_CHARSTRING_TYPE1,
+						     &data);
+        if (unlikely (status))
+	    break;
+
+        charstring_encrypt (&data);
+        length = _cairo_array_num_elements (&data);
+	if (font->scaled_font_subset->glyph_names != NULL) {
+	    _cairo_output_stream_printf (encrypted_output, "/%s %d RD ",
+					 font->scaled_font_subset->glyph_names[i],
+					 length);
+	} else if (i == 0) {
+	    _cairo_output_stream_printf (encrypted_output, "/.notdef %d RD ", length);
+	} else {
+	    _cairo_output_stream_printf (encrypted_output, "/g%d %d RD ", i, length);
+	}
+        _cairo_output_stream_write (encrypted_output,
+                                    _cairo_array_index (&data, 0),
+                                    length);
+        _cairo_output_stream_printf (encrypted_output, " ND\n");
+    }
+    _cairo_scaled_font_thaw_cache (font->type1_scaled_font);
+
+fail:
+    _cairo_array_fini (&data);
+    return status;
+}
+
+static void
+cairo_type1_font_write_header (cairo_type1_font_t *font,
+                               const char         *name)
+{
+    unsigned int i;
+    const char spaces[50] = "                                                  ";
+
+    _cairo_output_stream_printf (font->output,
+                                 "%%!FontType1-1.1 %s 1.0\n"
+                                 "11 dict begin\n"
+                                 "/FontName /%s def\n"
+                                 "/PaintType 0 def\n"
+                                 "/FontType 1 def\n"
+                                  "/FontMatrix [0.001 0 0 0.001 0 0] readonly def\n",
+                                 name,
+                                 name);
+
+    /* We don't know the bbox values until after the charstrings have
+     * been generated.  Reserve some space and fill in the bbox
+     * later. */
+
+    /* Worst case for four signed ints with spaces between each number */
+    font->bbox_max_chars = 50;
+
+    _cairo_output_stream_printf (font->output, "/FontBBox {");
+    font->bbox_position = _cairo_output_stream_get_position (font->output);
+    _cairo_output_stream_write (font->output, spaces, font->bbox_max_chars);
+
+    _cairo_output_stream_printf (font->output,
+                                 "} readonly def\n"
+                                 "/Encoding 256 array\n"
+				 "0 1 255 {1 index exch /.notdef put} for\n");
+    if (font->scaled_font_subset->is_latin) {
+	for (i = 1; i < 256; i++) {
+	    int subset_glyph = font->scaled_font_subset->latin_to_subset_glyph_index[i];
+
+	    if (subset_glyph > 0) {
+		if (font->scaled_font_subset->glyph_names != NULL) {
+		    _cairo_output_stream_printf (font->output, "dup %d /%s put\n",
+						 i, font->scaled_font_subset->glyph_names[subset_glyph]);
+		} else {
+		    _cairo_output_stream_printf (font->output, "dup %d /g%d put\n", i, subset_glyph);
+		}
+	    }
+	}
+    } else {
+	for (i = 1; i < font->scaled_font_subset->num_glyphs; i++) {
+	    if (font->scaled_font_subset->glyph_names != NULL) {
+		_cairo_output_stream_printf (font->output, "dup %d /%s put\n",
+					     i, font->scaled_font_subset->glyph_names[i]);
+	    } else {
+		_cairo_output_stream_printf (font->output, "dup %d /g%d put\n", i, i);
+	    }
+	}
+    }
+    _cairo_output_stream_printf (font->output,
+                                 "readonly def\n"
+                                 "currentdict end\n"
+                                 "currentfile eexec\n");
+}
+
+static cairo_status_t
+cairo_type1_write_stream_encrypted (void                *closure,
+                                    const unsigned char *data,
+                                    unsigned int         length)
+{
+    const unsigned char *in, *end;
+    uint16_t c, p;
+    static const char hex_digits[16] = "0123456789abcdef";
+    char digits[3];
+    cairo_type1_font_t *font = closure;
+
+    in = (const unsigned char *) data;
+    end = (const unsigned char *) data + length;
+    while (in < end) {
+	p = *in++;
+	c = p ^ (font->eexec_key >> 8);
+	font->eexec_key = (c + font->eexec_key) * CAIRO_TYPE1_ENCRYPT_C1 + CAIRO_TYPE1_ENCRYPT_C2;
+
+	if (font->hex_encode) {
+	    digits[0] = hex_digits[c >> 4];
+	    digits[1] = hex_digits[c & 0x0f];
+	    digits[2] = '\n';
+	    font->hex_column += 2;
+
+	    if (font->hex_column == 78) {
+		_cairo_output_stream_write (font->output, digits, 3);
+		font->hex_column = 0;
+	    } else {
+		_cairo_output_stream_write (font->output, digits, 2);
+	    }
+	} else {
+	    digits[0] = c;
+	    _cairo_output_stream_write (font->output, digits, 1);
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_type1_font_write_private_dict (cairo_type1_font_t *font,
+                                     const char         *name)
+{
+    cairo_int_status_t status;
+    cairo_status_t status2;
+    cairo_output_stream_t *encrypted_output;
+
+    font->eexec_key = CAIRO_TYPE1_PRIVATE_DICT_KEY;
+    font->hex_column = 0;
+    encrypted_output = _cairo_output_stream_create (
+        cairo_type1_write_stream_encrypted,
+        NULL,
+        font);
+    if (_cairo_output_stream_get_status (encrypted_output))
+	return  _cairo_output_stream_destroy (encrypted_output);
+
+    /* Note: the first four spaces at the start of this private dict
+     * are the four "random" bytes of plaintext required by the
+     * encryption algorithm */
+    _cairo_output_stream_printf (encrypted_output,
+                                 "    dup /Private 9 dict dup begin\n"
+                                 "/RD {string currentfile exch readstring pop}"
+                                 " bind executeonly def\n"
+                                 "/ND {noaccess def} executeonly def\n"
+                                 "/NP {noaccess put} executeonly def\n"
+                                 "/BlueValues [] def\n"
+                                 "/MinFeature {16 16} def\n"
+                                 "/lenIV 4 def\n"
+                                 "/password 5839 def\n");
+
+    status = cairo_type1_font_write_charstrings (font, encrypted_output);
+    if (unlikely (status))
+	goto fail;
+
+    _cairo_output_stream_printf (encrypted_output,
+                                 "end\n"
+                                 "end\n"
+                                 "readonly put\n"
+                                 "noaccess put\n"
+                                 "dup /FontName get exch definefont pop\n"
+                                 "mark currentfile closefile\n");
+
+  fail:
+    status2 = _cairo_output_stream_destroy (encrypted_output);
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+static void
+cairo_type1_font_write_trailer(cairo_type1_font_t *font)
+{
+    int i;
+    static const char zeros[65] =
+	"0000000000000000000000000000000000000000000000000000000000000000\n";
+
+    for (i = 0; i < 8; i++)
+	_cairo_output_stream_write (font->output, zeros, sizeof zeros);
+
+    _cairo_output_stream_printf (font->output, "cleartomark\n");
+}
+
+static cairo_status_t
+cairo_type1_write_stream (void *closure,
+                         const unsigned char *data,
+                         unsigned int length)
+{
+    cairo_type1_font_t *font = closure;
+
+    return _cairo_array_append_multiple (&font->contents, data, length);
+}
+
+static cairo_int_status_t
+cairo_type1_font_write (cairo_type1_font_t *font,
+                        const char *name)
+{
+    cairo_int_status_t status;
+
+    cairo_type1_font_write_header (font, name);
+    font->header_size = _cairo_output_stream_get_position (font->output);
+
+    status = cairo_type1_font_write_private_dict (font, name);
+    if (unlikely (status))
+	return status;
+
+    font->data_size = _cairo_output_stream_get_position (font->output) -
+	font->header_size;
+
+    cairo_type1_font_write_trailer (font);
+    font->trailer_size =
+	_cairo_output_stream_get_position (font->output) -
+	font->header_size - font->data_size;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+cairo_type1_font_generate (cairo_type1_font_t *font, const char *name)
+{
+    cairo_int_status_t status;
+
+    status = _cairo_array_grow_by (&font->contents, 4096);
+    if (unlikely (status))
+	return status;
+
+    font->output = _cairo_output_stream_create (cairo_type1_write_stream, NULL, font);
+    if (_cairo_output_stream_get_status (font->output))
+	return _cairo_output_stream_destroy (font->output);
+
+    status = cairo_type1_font_write (font, name);
+    if (unlikely (status))
+	return status;
+
+    font->data = _cairo_array_index (&font->contents, 0);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_type1_font_destroy (cairo_type1_font_t *font)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    free (font->widths);
+    cairo_scaled_font_destroy (font->type1_scaled_font);
+    _cairo_array_fini (&font->contents);
+    if (font->output)
+	status = _cairo_output_stream_destroy (font->output);
+    free (font);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_type1_fallback_init_internal (cairo_type1_subset_t	*type1_subset,
+                                     const char			*name,
+                                     cairo_scaled_font_subset_t	*scaled_font_subset,
+                                     cairo_bool_t                hex_encode)
+{
+    cairo_type1_font_t *font;
+    cairo_status_t status;
+    unsigned long length;
+    unsigned int i, len;
+
+    status = cairo_type1_font_create (scaled_font_subset, &font, hex_encode);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_generate (font, name);
+    if (unlikely (status))
+	goto fail1;
+
+    type1_subset->base_font = strdup (name);
+    if (unlikely (type1_subset->base_font == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail1;
+    }
+
+    type1_subset->widths = calloc (sizeof (double), font->scaled_font_subset->num_glyphs);
+    if (unlikely (type1_subset->widths == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail2;
+    }
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++)
+	type1_subset->widths[i] = (double)font->widths[i]/1000;
+
+    type1_subset->x_min   = (double)font->x_min/1000;
+    type1_subset->y_min   = (double)font->y_min/1000;
+    type1_subset->x_max   = (double)font->x_max/1000;
+    type1_subset->y_max   = (double)font->y_max/1000;
+    type1_subset->ascent  = (double)font->y_max/1000;
+    type1_subset->descent = (double)font->y_min/1000;
+
+    length = font->header_size + font->data_size +
+	font->trailer_size;
+    type1_subset->data = _cairo_malloc (length);
+    if (unlikely (type1_subset->data == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto fail3;
+    }
+    memcpy (type1_subset->data,
+	    _cairo_array_index (&font->contents, 0), length);
+
+    len = snprintf(type1_subset->data + font->bbox_position,
+                   font->bbox_max_chars,
+                   "%d %d %d %d",
+                   (int)font->x_min,
+                   (int)font->y_min,
+                   (int)font->x_max,
+                   (int)font->y_max);
+    type1_subset->data[font->bbox_position + len] = ' ';
+
+    type1_subset->header_length = font->header_size;
+    type1_subset->data_length = font->data_size;
+    type1_subset->trailer_length = font->trailer_size;
+
+    return cairo_type1_font_destroy (font);
+
+ fail3:
+    free (type1_subset->widths);
+ fail2:
+    free (type1_subset->base_font);
+ fail1:
+    /* status is already set, ignore further errors */
+    cairo_type1_font_destroy (font);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_type1_fallback_init_binary (cairo_type1_subset_t	      *type1_subset,
+                                   const char		      *name,
+                                   cairo_scaled_font_subset_t *scaled_font_subset)
+{
+    return _cairo_type1_fallback_init_internal (type1_subset,
+                                                name,
+                                                scaled_font_subset, FALSE);
+}
+
+cairo_status_t
+_cairo_type1_fallback_init_hex (cairo_type1_subset_t	   *type1_subset,
+                                const char		   *name,
+                                cairo_scaled_font_subset_t *scaled_font_subset)
+{
+    return _cairo_type1_fallback_init_internal (type1_subset,
+                                                name,
+                                                scaled_font_subset, TRUE);
+}
+
+void
+_cairo_type1_fallback_fini (cairo_type1_subset_t *subset)
+{
+    free (subset->base_font);
+    free (subset->widths);
+    free (subset->data);
+}
+
+cairo_status_t
+_cairo_type2_charstrings_init (cairo_type2_charstrings_t *type2_subset,
+                               cairo_scaled_font_subset_t *scaled_font_subset)
+{
+    cairo_type1_font_t *font;
+    cairo_status_t status;
+    unsigned int i;
+    cairo_array_t charstring;
+
+    status = cairo_type1_font_create (scaled_font_subset, &font, FALSE);
+    if (unlikely (status))
+	return status;
+
+    _cairo_array_init (&type2_subset->charstrings, sizeof (cairo_array_t));
+
+    type2_subset->widths = calloc (sizeof (int), font->scaled_font_subset->num_glyphs);
+    if (unlikely (type2_subset->widths == NULL)) {
+        status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+        goto fail1;
+    }
+
+    _cairo_scaled_font_freeze_cache (font->type1_scaled_font);
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+        _cairo_array_init (&charstring, sizeof (unsigned char));
+        status = _cairo_array_grow_by (&charstring, 32);
+        if (unlikely (status))
+            goto fail2;
+
+	status = cairo_type1_font_create_charstring (font, i,
+						     font->scaled_font_subset->glyphs[i],
+						     CAIRO_CHARSTRING_TYPE2,
+						     &charstring);
+        if (unlikely (status))
+            goto fail2;
+
+        status = _cairo_array_append (&type2_subset->charstrings, &charstring);
+        if (unlikely (status))
+            goto fail2;
+    }
+    _cairo_scaled_font_thaw_cache (font->type1_scaled_font);
+
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++)
+	type2_subset->widths[i] = font->widths[i];
+
+    type2_subset->x_min   = (int) font->x_min;
+    type2_subset->y_min   = (int) font->y_min;
+    type2_subset->x_max   = (int) font->x_max;
+    type2_subset->y_max   = (int) font->y_max;
+    type2_subset->ascent  = (int) font->y_max;
+    type2_subset->descent = (int) font->y_min;
+
+    return cairo_type1_font_destroy (font);
+
+fail2:
+    _cairo_scaled_font_thaw_cache (font->type1_scaled_font);
+    _cairo_array_fini (&charstring);
+    _cairo_type2_charstrings_fini (type2_subset);
+fail1:
+    cairo_type1_font_destroy (font);
+    return status;
+}
+
+void
+_cairo_type2_charstrings_fini (cairo_type2_charstrings_t *type2_subset)
+{
+    unsigned int i, num_charstrings;
+    cairo_array_t *charstring;
+
+    num_charstrings = _cairo_array_num_elements (&type2_subset->charstrings);
+    for (i = 0; i < num_charstrings; i++) {
+        charstring = _cairo_array_index (&type2_subset->charstrings, i);
+        _cairo_array_fini (charstring);
+    }
+    _cairo_array_fini (&type2_subset->charstrings);
+
+    free (type2_subset->widths);
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-type1-glyph-names.c b/libs/cairo-1.16.0/src/cairo-type1-glyph-names.c
new file mode 100644
index 0000000..80ccb96
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-type1-glyph-names.c
@@ -0,0 +1,410 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-type1-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+
+#if 0
+/*
+ * The three tables that follow are generated using this perl code:
+ */
+
+@ps_standard_encoding = (
+	#   0
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	#  16
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	#  32
+	"space",	"exclam",	"quotedbl",	"numbersign",
+	"dollar",	"percent",	"ampersand",	"quoteright",
+	"parenleft",	"parenright",	"asterisk",	"plus",
+	"comma",	"hyphen",	"period",	"slash",
+	#  48
+	"zero",		"one",		"two",		"three",
+	"four",		"five",		"six",		"seven",
+	"eight",	"nine",		"colon",	"semicolon",
+	"less",		"equal",	"greater",	"question",
+	#  64
+	"at",		"A",		"B",		"C",
+	"D",		"E",		"F",		"G",
+	"H",		"I",		"J",		"K",
+	"L",		"M",		"N",		"O",
+	#  80
+	"P",		"Q",		"R",		"S",
+	"T",		"U",		"V",		"W",
+	"X",		"Y",		"Z",		"bracketleft",
+	"backslash",	"bracketright",	"asciicircum",	"underscore",
+	#  96
+	"quoteleft",	"a",		"b",		"c",
+	"d",		"e",		"f",		"g",
+	"h",		"i",		"j",		"k",
+	"l",		"m",		"n",		"o",
+	# 112
+	"p",		"q",		"r",		"s",
+	"t",		"u",		"v",		"w",
+	"x",		"y",		"z",		"braceleft",
+	"bar",		"braceright",	"asciitilde",	NULL,
+	# 128
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	# 144
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	# 160
+	NULL,		"exclamdown",	"cent",		"sterling",
+	"fraction",	"yen",		"florin",	"section",
+	"currency",	"quotesingle",	"quotedblleft",	"guillemotleft",
+	"guilsinglleft","guilsinglright","fi",		"fl",
+	# 176
+	NULL,		"endash",	"dagger",	"daggerdbl",
+	"periodcentered",NULL,		"paragraph",	"bullet",
+	"quotesinglbase","quotedblbase","quotedblright","guillemotright",
+	"ellipsis",	"perthousand",	NULL,		"questiondown",
+	# 192
+	NULL,		"grave",	"acute",	"circumflex",
+	"tilde",	"macron",	"breve",	"dotaccent",
+	"dieresis",	NULL,		"ring",		"cedilla",
+	NULL,		"hungarumlaut",	"ogonek",	"caron",
+	# 208
+	"emdash",	NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	# 224
+	NULL,		"AE",		NULL,		"ordfeminine",
+	NULL,		NULL,		NULL,		NULL,
+	"Lslash",	"Oslash",	"OE",		"ordmasculine",
+	NULL,		NULL,		NULL,		NULL,
+	# 240
+	NULL,		"ae",		NULL,		NULL,
+	NULL,		"dotlessi",	NULL,		NULL,
+	"lslash",	"oslash",	"oe",		"germandbls",
+	NULL,		NULL,		NULL,		NULL
+	);
+
+@winansi_encoding = (
+	#   0
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	#  16
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	NULL,		NULL,		NULL,		NULL,
+	#  32
+	"space",	"exclam",	"quotedbl",	"numbersign",
+	"dollar",	"percent",	"ampersand",	"quotesingle",
+	"parenleft",	"parenright",	"asterisk",	"plus",
+	"comma",	"hyphen",	"period",	"slash",
+	#  48
+	"zero",		"one",		"two",		"three",
+	"four",		"five",		"six",		"seven",
+	"eight",	"nine",		"colon",	"semicolon",
+	"less",		"equal",	"greater",	"question",
+	#  64
+	"at",		"A",		"B",		"C",
+	"D",		"E",		"F",		"G",
+	"H",		"I",		"J",		"K",
+	"L",		"M",		"N",		"O",
+	#  80
+	"P",		"Q",		"R",		"S",
+	"T",		"U",		"V",		"W",
+	"X",		"Y",		"Z",		"bracketleft",
+	"backslash",	"bracketright",	"asciicircum",	"underscore",
+	#  96
+	"grave",	"a",		"b",		"c",
+	"d",		"e",		"f",		"g",
+	"h",		"i",		"j",		"k",
+	"l",		"m",		"n",		"o",
+	# 112
+	"p",		"q",		"r",		"s",
+	"t",		"u",		"v",		"w",
+	"x",		"y",		"z",		"braceleft",
+	"bar",		"braceright",	"asciitilde",	NULL,
+	# 128
+	"Euro",		NULL,		"quotesinglbase","florin",
+	"quotedblbase", "ellipsis",	"dagger",	"daggerdbl",
+	"circumflex",	"perthousand",	"Scaron",	"guilsinglleft",
+	"OE",		NULL,		"Zcaron",	NULL,
+	# 144
+	NULL,		"quoteleft",	"quoteright",	"quotedblleft",
+	"quotedblright","bullet",	"endash",	"emdash",
+	"tilde",	"trademark",	"scaron",	"guilsinglright",
+	"oe",		NULL,		"zcaron",	"Ydieresis",
+	# 160
+	NULL,		"exclamdown",	"cent",		"sterling",
+	"currency",	"yen",		"brokenbar",	"section",
+	"dieresis",	"copyright",	"ordfeminine",	"guillemotleft",
+	# 173 is also "hyphen" but we leave this NULL to avoid duplicate names
+	"logicalnot",	NULL,		"registered",	"macron",
+	# 176
+	"degree",	"plusminus",	"twosuperior",	"threesuperior",
+	"acute",	"mu",		"paragraph",	"periodcentered",
+	"cedilla",	"onesuperior",	"ordmasculine",	"guillemotright",
+	"onequarter",	"onehalf",	"threequarters","questiondown",
+	# 192
+	"Agrave",	"Aacute",	"Acircumflex",	"Atilde",
+	"Adieresis",	"Aring",	"AE",		"Ccedilla",
+	"Egrave",	"Eacute",	"Ecircumflex",	"Edieresis",
+	"Igrave",	"Iacute",	"Icircumflex",	"Idieresis",
+	# 208
+	"Eth",		"Ntilde",	"Ograve",	"Oacute",
+	"Ocircumflex",	"Otilde",	"Odieresis",	"multiply",
+	"Oslash",	"Ugrave",	"Uacute",	"Ucircumflex",
+	"Udieresis",	"Yacute",	"Thorn",	"germandbls",
+	# 224
+	"agrave",	"aacute",	"acircumflex",	"atilde",
+	"adieresis",	"aring",	"ae",		"ccedilla",
+	"egrave",	"eacute",	"ecircumflex",	"edieresis",
+	"igrave",	"iacute",	"icircumflex",	"idieresis",
+	# 240
+	"eth",		"ntilde",	"ograve",	"oacute",
+	"ocircumflex",	"otilde",	"odieresis",	"divide",
+	"oslash",	"ugrave",	"uacute",	"ucircumflex",
+	"udieresis",	"yacute",	"thorn",	"ydieresis"
+);
+
+sub print_offsets {
+    $s = qq();
+    for $sym (@_) {
+        if (! ($sym eq NULL)) {
+	    $ss = qq( $hash{$sym}/*$sym*/,);
+	} else {
+	    $ss = qq( 0,);
+	}
+	if (length($s) + length($ss) > 78) {
+	    print qq( $s\n);
+	    $s = "";
+	}
+	$s .= $ss;
+    }
+    print qq( $s\n);
+}
+
+@combined = (@ps_standard_encoding, @winansi_encoding);
+print "static const char glyph_name_symbol[] = {\n";
+%hash = ();
+$s = qq( "\\0");
+$offset = 1;
+for $sym (@combined) {
+    if (! ($sym eq NULL)) {
+        if (! exists $hash{$sym}) {
+	    $hash{$sym} = $offset;
+	    $offset += length($sym) + 1;
+	    $ss = qq( "$sym\\0");
+	    if (length($s) + length($ss) > 78) {
+	        print qq( $s\n);
+	        $s = "";
+	    }
+	    $s .= $ss;
+	}
+    }
+}
+print qq( $s\n);
+print "};\n\n";
+
+print "static const int16_t ps_standard_encoding_offset[256] = {\n";
+print_offsets(@ps_standard_encoding);
+print "};\n";
+
+print "static const int16_t winansi_encoding_offset[256] = {\n";
+print_offsets(@winansi_encoding);
+print "};\n";
+
+exit;
+#endif
+
+static const char glyph_name_symbol[] = {
+  "\0" "space\0" "exclam\0" "quotedbl\0" "numbersign\0" "dollar\0" "percent\0"
+  "ampersand\0" "quoteright\0" "parenleft\0" "parenright\0" "asterisk\0"
+  "plus\0" "comma\0" "hyphen\0" "period\0" "slash\0" "zero\0" "one\0" "two\0"
+  "three\0" "four\0" "five\0" "six\0" "seven\0" "eight\0" "nine\0" "colon\0"
+  "semicolon\0" "less\0" "equal\0" "greater\0" "question\0" "at\0" "A\0" "B\0"
+  "C\0" "D\0" "E\0" "F\0" "G\0" "H\0" "I\0" "J\0" "K\0" "L\0" "M\0" "N\0" "O\0"
+  "P\0" "Q\0" "R\0" "S\0" "T\0" "U\0" "V\0" "W\0" "X\0" "Y\0" "Z\0"
+  "bracketleft\0" "backslash\0" "bracketright\0" "asciicircum\0" "underscore\0"
+  "quoteleft\0" "a\0" "b\0" "c\0" "d\0" "e\0" "f\0" "g\0" "h\0" "i\0" "j\0"
+  "k\0" "l\0" "m\0" "n\0" "o\0" "p\0" "q\0" "r\0" "s\0" "t\0" "u\0" "v\0" "w\0"
+  "x\0" "y\0" "z\0" "braceleft\0" "bar\0" "braceright\0" "asciitilde\0"
+  "exclamdown\0" "cent\0" "sterling\0" "fraction\0" "yen\0" "florin\0"
+  "section\0" "currency\0" "quotesingle\0" "quotedblleft\0" "guillemotleft\0"
+  "guilsinglleft\0" "guilsinglright\0" "fi\0" "fl\0" "endash\0" "dagger\0"
+  "daggerdbl\0" "periodcentered\0" "paragraph\0" "bullet\0" "quotesinglbase\0"
+  "quotedblbase\0" "quotedblright\0" "guillemotright\0" "ellipsis\0"
+  "perthousand\0" "questiondown\0" "grave\0" "acute\0" "circumflex\0" "tilde\0"
+  "macron\0" "breve\0" "dotaccent\0" "dieresis\0" "ring\0" "cedilla\0"
+  "hungarumlaut\0" "ogonek\0" "caron\0" "emdash\0" "AE\0" "ordfeminine\0"
+  "Lslash\0" "Oslash\0" "OE\0" "ordmasculine\0" "ae\0" "dotlessi\0" "lslash\0"
+  "oslash\0" "oe\0" "germandbls\0" "Euro\0" "Scaron\0" "Zcaron\0" "trademark\0"
+  "scaron\0" "zcaron\0" "Ydieresis\0" "brokenbar\0" "copyright\0"
+  "logicalnot\0" "registered\0" "degree\0" "plusminus\0" "twosuperior\0"
+  "threesuperior\0" "mu\0" "onesuperior\0" "onequarter\0" "onehalf\0"
+  "threequarters\0" "Agrave\0" "Aacute\0" "Acircumflex\0" "Atilde\0"
+  "Adieresis\0" "Aring\0" "Ccedilla\0" "Egrave\0" "Eacute\0" "Ecircumflex\0"
+  "Edieresis\0" "Igrave\0" "Iacute\0" "Icircumflex\0" "Idieresis\0" "Eth\0"
+  "Ntilde\0" "Ograve\0" "Oacute\0" "Ocircumflex\0" "Otilde\0" "Odieresis\0"
+  "multiply\0" "Ugrave\0" "Uacute\0" "Ucircumflex\0" "Udieresis\0" "Yacute\0"
+  "Thorn\0" "agrave\0" "aacute\0" "acircumflex\0" "atilde\0" "adieresis\0"
+  "aring\0" "ccedilla\0" "egrave\0" "eacute\0" "ecircumflex\0" "edieresis\0"
+  "igrave\0" "iacute\0" "icircumflex\0" "idieresis\0" "eth\0" "ntilde\0"
+  "ograve\0" "oacute\0" "ocircumflex\0" "otilde\0" "odieresis\0" "divide\0"
+  "ugrave\0" "uacute\0" "ucircumflex\0" "udieresis\0" "yacute\0" "thorn\0"
+  "ydieresis\0"
+};
+
+static const int16_t ps_standard_encoding_offset[256] = {
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 1/*space*/, 7/*exclam*/, 14/*quotedbl*/, 23/*numbersign*/,
+  34/*dollar*/, 41/*percent*/, 49/*ampersand*/, 59/*quoteright*/,
+  70/*parenleft*/, 80/*parenright*/, 91/*asterisk*/, 100/*plus*/, 105/*comma*/,
+  111/*hyphen*/, 118/*period*/, 125/*slash*/, 131/*zero*/, 136/*one*/,
+  140/*two*/, 144/*three*/, 150/*four*/, 155/*five*/, 160/*six*/, 164/*seven*/,
+  170/*eight*/, 176/*nine*/, 181/*colon*/, 187/*semicolon*/, 197/*less*/,
+  202/*equal*/, 208/*greater*/, 216/*question*/, 225/*at*/, 228/*A*/, 230/*B*/,
+  232/*C*/, 234/*D*/, 236/*E*/, 238/*F*/, 240/*G*/, 242/*H*/, 244/*I*/,
+  246/*J*/, 248/*K*/, 250/*L*/, 252/*M*/, 254/*N*/, 256/*O*/, 258/*P*/,
+  260/*Q*/, 262/*R*/, 264/*S*/, 266/*T*/, 268/*U*/, 270/*V*/, 272/*W*/,
+  274/*X*/, 276/*Y*/, 278/*Z*/, 280/*bracketleft*/, 292/*backslash*/,
+  302/*bracketright*/, 315/*asciicircum*/, 327/*underscore*/, 338/*quoteleft*/,
+  348/*a*/, 350/*b*/, 352/*c*/, 354/*d*/, 356/*e*/, 358/*f*/, 360/*g*/,
+  362/*h*/, 364/*i*/, 366/*j*/, 368/*k*/, 370/*l*/, 372/*m*/, 374/*n*/,
+  376/*o*/, 378/*p*/, 380/*q*/, 382/*r*/, 384/*s*/, 386/*t*/, 388/*u*/,
+  390/*v*/, 392/*w*/, 394/*x*/, 396/*y*/, 398/*z*/, 400/*braceleft*/,
+  410/*bar*/, 414/*braceright*/, 425/*asciitilde*/, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  436/*exclamdown*/, 447/*cent*/, 452/*sterling*/, 461/*fraction*/, 470/*yen*/,
+  474/*florin*/, 481/*section*/, 489/*currency*/, 498/*quotesingle*/,
+  510/*quotedblleft*/, 523/*guillemotleft*/, 537/*guilsinglleft*/,
+  551/*guilsinglright*/, 566/*fi*/, 569/*fl*/, 0, 572/*endash*/, 579/*dagger*/,
+  586/*daggerdbl*/, 596/*periodcentered*/, 0, 611/*paragraph*/, 621/*bullet*/,
+  628/*quotesinglbase*/, 643/*quotedblbase*/, 656/*quotedblright*/,
+  670/*guillemotright*/, 685/*ellipsis*/, 694/*perthousand*/, 0,
+  706/*questiondown*/, 0, 719/*grave*/, 725/*acute*/, 731/*circumflex*/,
+  742/*tilde*/, 748/*macron*/, 755/*breve*/, 761/*dotaccent*/, 771/*dieresis*/,
+  0, 780/*ring*/, 785/*cedilla*/, 0, 793/*hungarumlaut*/, 806/*ogonek*/,
+  813/*caron*/, 819/*emdash*/, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  826/*AE*/, 0, 829/*ordfeminine*/, 0, 0, 0, 0, 841/*Lslash*/, 848/*Oslash*/,
+  855/*OE*/, 858/*ordmasculine*/, 0, 0, 0, 0, 0, 871/*ae*/, 0, 0, 0,
+  874/*dotlessi*/, 0, 0, 883/*lslash*/, 890/*oslash*/, 897/*oe*/,
+  900/*germandbls*/, 0, 0, 0, 0,
+};
+
+static const int16_t winansi_encoding_offset[256] = {
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 1/*space*/, 7/*exclam*/, 14/*quotedbl*/, 23/*numbersign*/,
+  34/*dollar*/, 41/*percent*/, 49/*ampersand*/, 498/*quotesingle*/,
+  70/*parenleft*/, 80/*parenright*/, 91/*asterisk*/, 100/*plus*/, 105/*comma*/,
+  111/*hyphen*/, 118/*period*/, 125/*slash*/, 131/*zero*/, 136/*one*/,
+  140/*two*/, 144/*three*/, 150/*four*/, 155/*five*/, 160/*six*/, 164/*seven*/,
+  170/*eight*/, 176/*nine*/, 181/*colon*/, 187/*semicolon*/, 197/*less*/,
+  202/*equal*/, 208/*greater*/, 216/*question*/, 225/*at*/, 228/*A*/, 230/*B*/,
+  232/*C*/, 234/*D*/, 236/*E*/, 238/*F*/, 240/*G*/, 242/*H*/, 244/*I*/,
+  246/*J*/, 248/*K*/, 250/*L*/, 252/*M*/, 254/*N*/, 256/*O*/, 258/*P*/,
+  260/*Q*/, 262/*R*/, 264/*S*/, 266/*T*/, 268/*U*/, 270/*V*/, 272/*W*/,
+  274/*X*/, 276/*Y*/, 278/*Z*/, 280/*bracketleft*/, 292/*backslash*/,
+  302/*bracketright*/, 315/*asciicircum*/, 327/*underscore*/, 719/*grave*/,
+  348/*a*/, 350/*b*/, 352/*c*/, 354/*d*/, 356/*e*/, 358/*f*/, 360/*g*/,
+  362/*h*/, 364/*i*/, 366/*j*/, 368/*k*/, 370/*l*/, 372/*m*/, 374/*n*/,
+  376/*o*/, 378/*p*/, 380/*q*/, 382/*r*/, 384/*s*/, 386/*t*/, 388/*u*/,
+  390/*v*/, 392/*w*/, 394/*x*/, 396/*y*/, 398/*z*/, 400/*braceleft*/,
+  410/*bar*/, 414/*braceright*/, 425/*asciitilde*/, 0, 911/*Euro*/, 0,
+  628/*quotesinglbase*/, 474/*florin*/, 643/*quotedblbase*/, 685/*ellipsis*/,
+  579/*dagger*/, 586/*daggerdbl*/, 731/*circumflex*/, 694/*perthousand*/,
+  916/*Scaron*/, 537/*guilsinglleft*/, 855/*OE*/, 0, 923/*Zcaron*/, 0, 0,
+  338/*quoteleft*/, 59/*quoteright*/, 510/*quotedblleft*/,
+  656/*quotedblright*/, 621/*bullet*/, 572/*endash*/, 819/*emdash*/,
+  742/*tilde*/, 930/*trademark*/, 940/*scaron*/, 551/*guilsinglright*/,
+  897/*oe*/, 0, 947/*zcaron*/, 954/*Ydieresis*/, 0, 436/*exclamdown*/,
+  447/*cent*/, 452/*sterling*/, 489/*currency*/, 470/*yen*/, 964/*brokenbar*/,
+  481/*section*/, 771/*dieresis*/, 974/*copyright*/, 829/*ordfeminine*/,
+  523/*guillemotleft*/, 984/*logicalnot*/, 0, 995/*registered*/, 748/*macron*/,
+  1006/*degree*/, 1013/*plusminus*/, 1023/*twosuperior*/,
+  1035/*threesuperior*/, 725/*acute*/, 1049/*mu*/, 611/*paragraph*/,
+  596/*periodcentered*/, 785/*cedilla*/, 1052/*onesuperior*/,
+  858/*ordmasculine*/, 670/*guillemotright*/, 1064/*onequarter*/,
+  1075/*onehalf*/, 1083/*threequarters*/, 706/*questiondown*/, 1097/*Agrave*/,
+  1104/*Aacute*/, 1111/*Acircumflex*/, 1123/*Atilde*/, 1130/*Adieresis*/,
+  1140/*Aring*/, 826/*AE*/, 1146/*Ccedilla*/, 1155/*Egrave*/, 1162/*Eacute*/,
+  1169/*Ecircumflex*/, 1181/*Edieresis*/, 1191/*Igrave*/, 1198/*Iacute*/,
+  1205/*Icircumflex*/, 1217/*Idieresis*/, 1227/*Eth*/, 1231/*Ntilde*/,
+  1238/*Ograve*/, 1245/*Oacute*/, 1252/*Ocircumflex*/, 1264/*Otilde*/,
+  1271/*Odieresis*/, 1281/*multiply*/, 848/*Oslash*/, 1290/*Ugrave*/,
+  1297/*Uacute*/, 1304/*Ucircumflex*/, 1316/*Udieresis*/, 1326/*Yacute*/,
+  1333/*Thorn*/, 900/*germandbls*/, 1339/*agrave*/, 1346/*aacute*/,
+  1353/*acircumflex*/, 1365/*atilde*/, 1372/*adieresis*/, 1382/*aring*/,
+  871/*ae*/, 1388/*ccedilla*/, 1397/*egrave*/, 1404/*eacute*/,
+  1411/*ecircumflex*/, 1423/*edieresis*/, 1433/*igrave*/, 1440/*iacute*/,
+  1447/*icircumflex*/, 1459/*idieresis*/, 1469/*eth*/, 1473/*ntilde*/,
+  1480/*ograve*/, 1487/*oacute*/, 1494/*ocircumflex*/, 1506/*otilde*/,
+  1513/*odieresis*/, 1523/*divide*/, 890/*oslash*/, 1530/*ugrave*/,
+  1537/*uacute*/, 1544/*ucircumflex*/, 1556/*udieresis*/, 1566/*yacute*/,
+  1573/*thorn*/, 1579/*ydieresis*/,
+};
+
+const char *
+_cairo_ps_standard_encoding_to_glyphname (int glyph)
+{
+    if (ps_standard_encoding_offset[glyph])
+	return glyph_name_symbol + ps_standard_encoding_offset[glyph];
+    else
+	return NULL;
+}
+
+const char *
+_cairo_winansi_to_glyphname (int glyph)
+{
+    if (winansi_encoding_offset[glyph])
+	return glyph_name_symbol + winansi_encoding_offset[glyph];
+    else
+	return NULL;
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-type1-private.h b/libs/cairo-1.16.0/src/cairo-type1-private.h
new file mode 100644
index 0000000..1630397
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-type1-private.h
@@ -0,0 +1,51 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_TYPE1_PRIVATE_H
+#define CAIRO_TYPE1_PRIVATE_H
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+/* Magic constants for the type1 eexec encryption */
+#define CAIRO_TYPE1_ENCRYPT_C1		((unsigned short) 52845)
+#define CAIRO_TYPE1_ENCRYPT_C2		((unsigned short) 22719)
+#define CAIRO_TYPE1_PRIVATE_DICT_KEY	((unsigned short) 55665)
+#define CAIRO_TYPE1_CHARSTRING_KEY	((unsigned short) 4330)
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
+
+#endif /* CAIRO_TYPE1_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-type1-subset.c b/libs/cairo-1.16.0/src/cairo-type1-subset.c
new file mode 100644
index 0000000..5f07456
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-type1-subset.c
@@ -0,0 +1,1827 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ */
+
+/*
+ * Useful links:
+ * http://partners.adobe.com/public/developer/en/font/T1_SPEC.PDF
+ */
+
+
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
+#include "cairoint.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-type1-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-output-stream-private.h"
+
+#include <ctype.h>
+
+#define TYPE1_STACKSIZE 24 /* Defined in Type 1 Font Format */
+
+
+typedef struct {
+    int subset_index;
+    double width;
+    const char *encrypted_charstring;
+    int encrypted_charstring_length;
+} glyph_data_t;
+
+typedef struct _cairo_type1_font_subset {
+    cairo_scaled_font_subset_t *scaled_font_subset;
+
+    struct {
+	unsigned int font_id;
+	char *base_font;
+	unsigned int num_glyphs;
+	double x_min, y_min, x_max, y_max;
+	double ascent, descent;
+	double units_per_em;
+
+	const char    *data;
+	unsigned long  header_size;
+	unsigned long  data_size;
+	unsigned long  trailer_size;
+    } base;
+
+    int num_glyphs;
+
+    /* The glyphs and glyph_names arrays are indexed by the order of
+     * the Charstrings in the font. This is not necessarily the same
+     * order as the glyph index. The index_to_glyph_name() font backend
+     * function is used to map the glyph index to the glyph order in
+     * the Charstrings. */
+
+    glyph_data_t *glyphs;
+    char **glyph_names;
+    cairo_array_t glyphs_array;
+    cairo_array_t glyph_names_array;
+
+    int num_subrs;
+    cairo_bool_t subset_subrs;
+    struct {
+	const char *subr_string;
+	int subr_length;
+	const char *np;
+	int np_length;
+	cairo_bool_t used;
+    } *subrs;
+
+    /* Indexed by subset_index this maps to the glyph order in the
+     * glyph_names and glyphs arrays. Has font->num_golyphs
+     * elements. */
+    int *subset_index_to_glyphs;
+
+    cairo_output_stream_t *output;
+    cairo_array_t contents;
+
+    const char *rd, *nd, *np;
+
+    int lenIV;
+
+    char *type1_data;
+    unsigned int type1_length;
+    char *type1_end;
+
+    char *header_segment;
+    int header_segment_size;
+    char *eexec_segment;
+    int eexec_segment_size;
+    cairo_bool_t eexec_segment_is_ascii;
+
+    char *cleartext;
+    char *cleartext_end;
+
+    int header_size;
+
+    unsigned short eexec_key;
+    cairo_bool_t hex_encode;
+    int hex_column;
+
+    struct {
+	double stack[TYPE1_STACKSIZE];
+	int sp;
+    } build_stack;
+
+    struct {
+	int stack[TYPE1_STACKSIZE];
+	int sp;
+    } ps_stack;
+
+
+} cairo_type1_font_subset_t;
+
+
+static cairo_status_t
+_cairo_type1_font_subset_init (cairo_type1_font_subset_t  *font,
+			       cairo_scaled_font_subset_t *scaled_font_subset,
+			       cairo_bool_t                hex_encode)
+{
+    memset (font, 0, sizeof (*font));
+    font->scaled_font_subset = scaled_font_subset;
+
+    _cairo_array_init (&font->glyphs_array, sizeof (glyph_data_t));
+    _cairo_array_init (&font->glyph_names_array, sizeof (char *));
+    font->subset_index_to_glyphs = NULL;
+    font->base.num_glyphs = 0;
+    font->num_subrs = 0;
+    font->subset_subrs = TRUE;
+    font->subrs = NULL;
+
+    font->hex_encode = hex_encode;
+    font->num_glyphs = 0;
+
+    _cairo_array_init (&font->contents, sizeof (char));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+cairo_type1_font_subset_use_glyph (cairo_type1_font_subset_t *font, int glyph)
+{
+    if (font->glyphs[glyph].subset_index >= 0)
+	return;
+
+    font->glyphs[glyph].subset_index = font->num_glyphs;
+    font->subset_index_to_glyphs[font->num_glyphs] = glyph;
+    font->num_glyphs++;
+}
+
+static cairo_bool_t
+is_ps_delimiter(int c)
+{
+    static const char delimiters[] = "()[]{}<>/% \t\r\n";
+
+    return strchr (delimiters, c) != NULL;
+}
+
+static const char *
+find_token (const char *buffer, const char *end, const char *token)
+{
+    int i, length;
+    /* FIXME: find substring really must be find_token */
+
+    if (buffer == NULL)
+	return NULL;
+
+    length = strlen (token);
+    for (i = 0; buffer + i < end - length + 1; i++)
+	if (memcmp (buffer + i, token, length) == 0)
+	    if ((i == 0 || token[0] == '/' || is_ps_delimiter(buffer[i - 1])) &&
+		(buffer + i == end - length || is_ps_delimiter(buffer[i + length])))
+		return buffer + i;
+
+    return NULL;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_find_segments (cairo_type1_font_subset_t *font)
+{
+    unsigned char *p;
+    const char *eexec_token;
+    int size, i;
+
+    p = (unsigned char *) font->type1_data;
+    font->type1_end = font->type1_data + font->type1_length;
+    if (p[0] == 0x80 && p[1] == 0x01) {
+	font->header_segment_size =
+	    p[2] | (p[3] << 8) | (p[4] << 16) | (p[5] << 24);
+	font->header_segment = (char *) p + 6;
+
+	p += 6 + font->header_segment_size;
+	font->eexec_segment_size =
+	    p[2] | (p[3] << 8) | (p[4] << 16) | (p[5] << 24);
+	font->eexec_segment = (char *) p + 6;
+	font->eexec_segment_is_ascii = (p[1] == 1);
+
+        p += 6 + font->eexec_segment_size;
+        while (p < (unsigned char *) (font->type1_end) && p[1] != 0x03) {
+            size = p[2] | (p[3] << 8) | (p[4] << 16) | (p[5] << 24);
+            p += 6 + size;
+        }
+        font->type1_end = (char *) p;
+    } else {
+	eexec_token = find_token ((char *) p, font->type1_end, "eexec");
+	if (eexec_token == NULL)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	font->header_segment_size = eexec_token - (char *) p + strlen ("eexec\n");
+	font->header_segment = (char *) p;
+	font->eexec_segment_size = font->type1_length - font->header_segment_size;
+	font->eexec_segment = (char *) p + font->header_segment_size;
+	font->eexec_segment_is_ascii = TRUE;
+	for (i = 0; i < 4; i++) {
+	    if (!isxdigit(font->eexec_segment[i]))
+		font->eexec_segment_is_ascii = FALSE;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Search for the definition of key and erase it by overwriting with spaces.
+ * This function is looks for definitions of the form:
+ *
+ * /key1 1234 def
+ * /key2 [12 34 56] def
+ *
+ * ie a key defined as an integer or array of integers.
+ *
+ */
+static void
+cairo_type1_font_erase_dict_key (cairo_type1_font_subset_t *font,
+				 const char *key)
+{
+    const char *start, *p, *segment_end;
+
+    segment_end = font->header_segment + font->header_segment_size;
+
+    start = font->header_segment;
+    do {
+	start = find_token (start, segment_end, key);
+	if (start) {
+	    p = start + strlen(key);
+	    /* skip integers or array of integers */
+	    while (p < segment_end &&
+		   (_cairo_isspace(*p) ||
+		    _cairo_isdigit(*p) ||
+		    *p == '[' ||
+		    *p == ']'))
+	    {
+		p++;
+	    }
+
+	    if (p + 3 < segment_end && memcmp(p, "def", 3) == 0) {
+		/* erase definition of the key */
+		memset((char *) start, ' ', p + 3 - start);
+	    }
+	    start += strlen(key);
+	}
+    } while (start);
+}
+
+static cairo_status_t
+cairo_type1_font_subset_get_matrix (cairo_type1_font_subset_t *font,
+				    const char                *name,
+				    double                    *a,
+				    double                    *b,
+				    double                    *c,
+				    double                    *d)
+{
+    const char *start, *end, *segment_end;
+    int ret, s_max, i, j;
+    char *s;
+    const char *decimal_point;
+    int decimal_point_len;
+
+    decimal_point = _cairo_get_locale_decimal_point ();
+    decimal_point_len = strlen (decimal_point);
+
+    assert (decimal_point_len != 0);
+
+    segment_end = font->header_segment + font->header_segment_size;
+    start = find_token (font->header_segment, segment_end, name);
+    if (start == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    end = find_token (start, segment_end, "def");
+    if (end == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    s_max = end - start + 5*decimal_point_len + 1;
+    s = _cairo_malloc (s_max);
+    if (unlikely (s == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    i = 0;
+    j = 0;
+    while (i < end - start && j < s_max - decimal_point_len) {
+	if (start[i] == '.') {
+	    strncpy(s + j, decimal_point, decimal_point_len);
+	    i++;
+	    j += decimal_point_len;
+	} else {
+	    s[j++] = start[i++];
+	}
+    }
+    s[j] = 0;
+
+    start = strpbrk (s, "{[");
+    if (!start) {
+	free (s);
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    start++;
+    ret = 0;
+    if (*start)
+	ret = sscanf(start, "%lf %lf %lf %lf", a, b, c, d);
+
+    free (s);
+
+    if (ret != 4)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_get_bbox (cairo_type1_font_subset_t *font)
+{
+    cairo_status_t status;
+    double x_min, y_min, x_max, y_max;
+    double xx, yx, xy, yy;
+
+    status = cairo_type1_font_subset_get_matrix (font, "/FontBBox",
+						 &x_min,
+						 &y_min,
+						 &x_max,
+						 &y_max);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_get_matrix (font, "/FontMatrix",
+						 &xx, &yx, &xy, &yy);
+    if (unlikely (status))
+	return status;
+
+    if (yy == 0.0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Freetype uses 1/yy to get units per EM */
+    font->base.units_per_em = 1.0/yy;
+
+    font->base.x_min = x_min / font->base.units_per_em;
+    font->base.y_min = y_min / font->base.units_per_em;
+    font->base.x_max = x_max / font->base.units_per_em;
+    font->base.y_max = y_max / font->base.units_per_em;
+    font->base.ascent = font->base.y_max;
+    font->base.descent = font->base.y_min;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_get_fontname (cairo_type1_font_subset_t *font)
+{
+    const char *start, *end, *segment_end;
+    char *s;
+    int i;
+    cairo_status_t status;
+
+    segment_end = font->header_segment + font->header_segment_size;
+    start = find_token (font->header_segment, segment_end, "/FontName");
+    if (start == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    start += strlen ("/FontName");
+
+    end = find_token (start, segment_end, "def");
+    if (end == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    while (end > start && _cairo_isspace(end[-1]))
+	end--;
+
+    s = _cairo_malloc (end - start + 1);
+    if (unlikely (s == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    strncpy (s, start, end - start);
+    s[end - start] = 0;
+
+    start = strchr (s, '/');
+    if (!start++ || !start) {
+	free (s);
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* If font name is prefixed with a subset tag, strip it off. */
+    if (strlen(start) > 7 && start[6] == '+') {
+	for (i = 0; i < 6; i++) {
+	    if (start[i] < 'A' || start[i] > 'Z')
+		break;
+	}
+	if (i == 6)
+	    start += 7;
+    }
+
+    font->base.base_font = strdup (start);
+    free (s);
+    if (unlikely (font->base.base_font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_escape_ps_name (&font->base.base_font);
+
+    return status;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_write_header (cairo_type1_font_subset_t *font,
+					 const char *name)
+{
+    const char *start, *end, *segment_end;
+    unsigned int i;
+
+    /* FIXME:
+     * This function assumes that /FontName always appears
+     * before /Encoding. This appears to always be the case with Type1
+     * fonts.
+     *
+     * The more recently added code for removing the UniqueID and XUID
+     * keys can not make any assumptions about the position of the
+     * keys in the dictionary so it is implemented by overwriting the
+     * key definition with spaces before we start copying the font to
+     * the output.
+     *
+     * This code should be rewritten to not make any assumptions about
+     * the order of dictionary keys. This will allow UniqueID to be
+     * stripped out instead of leaving a bunch of spaces in the
+     * output.
+     */
+    cairo_type1_font_erase_dict_key (font, "/UniqueID");
+    cairo_type1_font_erase_dict_key (font, "/XUID");
+
+    segment_end = font->header_segment + font->header_segment_size;
+
+    /* Type 1 fonts created by Fontforge have some PostScript code at
+     * the start of the font that skips the font if the printer has a
+     * cached copy of the font with the same unique id. This breaks
+     * our subsetted font so we disable it by searching for the
+     * PostScript operator "known" when used to check for the
+     * "/UniqueID" dictionary key. We append " pop false " after it to
+     * pop the result of this check off the stack and replace it with
+     * "false" to make the PostScript code think "/UniqueID" does not
+     * exist.
+     */
+    end = font->header_segment;
+    start = find_token (font->header_segment, segment_end, "/UniqueID");
+    if (start) {
+	start += 9;
+	while (start < segment_end && _cairo_isspace (*start))
+	    start++;
+	if (start + 5 < segment_end && memcmp(start, "known", 5) == 0) {
+	    _cairo_output_stream_write (font->output, font->header_segment,
+					start + 5 - font->header_segment);
+	    _cairo_output_stream_printf (font->output, " pop false ");
+	    end = start + 5;
+	}
+    }
+
+    start = find_token (end, segment_end, "/FontName");
+    if (start == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_output_stream_write (font->output, end,
+				start - end);
+
+    _cairo_output_stream_printf (font->output, "/FontName /%s def", name);
+
+    end = find_token (start, segment_end, "def");
+    if (end == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    end += 3;
+
+    start = find_token (end, segment_end, "/Encoding");
+    if (start == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    _cairo_output_stream_write (font->output, end, start - end);
+
+    _cairo_output_stream_printf (font->output,
+				 "/Encoding 256 array\n"
+				 "0 1 255 {1 index exch /.notdef put} for\n");
+    if (font->scaled_font_subset->is_latin) {
+	for (i = 1; i < 256; i++) {
+	    int subset_glyph = font->scaled_font_subset->latin_to_subset_glyph_index[i];
+
+	    if (subset_glyph > 0) {
+		_cairo_output_stream_printf (font->output,
+					     "dup %d /%s put\n",
+					     i,
+					     _cairo_winansi_to_glyphname (i));
+	    }
+	}
+    } else {
+	for (i = 0; i < font->base.num_glyphs; i++) {
+	    if (font->glyphs[i].subset_index <= 0)
+		continue;
+	    _cairo_output_stream_printf (font->output,
+					 "dup %d /%s put\n",
+					 font->glyphs[i].subset_index,
+					 font->glyph_names[i]);
+	}
+    }
+    _cairo_output_stream_printf (font->output, "readonly def");
+
+    end = find_token (start, segment_end, "def");
+    if (end == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    end += 3;
+
+    /* There are some buggy fonts that contain more than one /Encoding */
+    if (find_token (end, segment_end, "/Encoding"))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_output_stream_write (font->output, end, segment_end - end);
+
+    return font->output->status;
+}
+
+static int
+hex_to_int (int ch)
+{
+    if (ch <= '9')
+	return ch - '0';
+    else if (ch <= 'F')
+	return ch - 'A' + 10;
+    else
+	return ch - 'a' + 10;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_write_encrypted (cairo_type1_font_subset_t *font,
+					 const char *data, unsigned int length)
+{
+    const unsigned char *in, *end;
+    int c, p;
+    static const char hex_digits[16] = "0123456789abcdef";
+    char digits[3];
+
+    in = (const unsigned char *) data;
+    end = (const unsigned char *) data + length;
+    while (in < end) {
+	p = *in++;
+	c = p ^ (font->eexec_key >> 8);
+	font->eexec_key = (c + font->eexec_key) * CAIRO_TYPE1_ENCRYPT_C1 + CAIRO_TYPE1_ENCRYPT_C2;
+
+	if (font->hex_encode) {
+	    digits[0] = hex_digits[c >> 4];
+	    digits[1] = hex_digits[c & 0x0f];
+	    digits[2] = '\n';
+	    font->hex_column += 2;
+
+	    if (font->hex_column == 78) {
+		_cairo_output_stream_write (font->output, digits, 3);
+		font->hex_column = 0;
+	    } else {
+		_cairo_output_stream_write (font->output, digits, 2);
+	    }
+	} else {
+	    digits[0] = c;
+	    _cairo_output_stream_write (font->output, digits, 1);
+	}
+    }
+
+    return font->output->status;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_decrypt_eexec_segment (cairo_type1_font_subset_t *font)
+{
+    unsigned short r = CAIRO_TYPE1_PRIVATE_DICT_KEY;
+    unsigned char *in, *end;
+    char *out;
+    int c, p;
+    int i;
+
+    in = (unsigned char *) font->eexec_segment;
+    end = (unsigned char *) in + font->eexec_segment_size;
+
+    font->cleartext = _cairo_malloc (font->eexec_segment_size + 1);
+    if (unlikely (font->cleartext == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    out = font->cleartext;
+    while (in < end) {
+	if (font->eexec_segment_is_ascii) {
+	    c = *in++;
+	    if (_cairo_isspace (c))
+		continue;
+	    c = (hex_to_int (c) << 4) | hex_to_int (*in++);
+	} else {
+	    c = *in++;
+	}
+	p = c ^ (r >> 8);
+	r = (c + r) * CAIRO_TYPE1_ENCRYPT_C1 + CAIRO_TYPE1_ENCRYPT_C2;
+
+	*out++ = p;
+    }
+    font->cleartext_end = out;
+
+    /* Overwrite random bytes with spaces.
+     *
+     * The first 4 bytes of the cleartext are the random bytes
+     * required by the encryption algorithm. When encrypting the
+     * cleartext, the first ciphertext byte must not be a white space
+     * character and the first 4 bytes must not be an ASCII Hex
+     * character. Some fonts do not check that their randomly chosen
+     * bytes results in ciphertext that complies with this
+     * restriction. This may cause problems for some PDF consumers. By
+     * replacing the random bytes with spaces, the first four bytes of
+     * ciphertext will always be 0xf9, 0x83, 0xef, 0x00 which complies
+     * with this restriction. Using spaces also means we don't have to
+     * skip over the random bytes when parsing the cleartext.
+     */
+    for (i = 0; i < 4 && i < font->eexec_segment_size; i++)
+	font->cleartext[i] = ' ';
+
+    /* Ensure strtol() can not scan past the end of the cleartext */
+    font->cleartext[font->eexec_segment_size] = 0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const char *
+skip_token (const char *p, const char *end)
+{
+    while (p < end && _cairo_isspace(*p))
+	p++;
+
+    while (p < end && !_cairo_isspace(*p))
+	p++;
+
+    if (p == end)
+	return NULL;
+
+    return p;
+}
+
+static void
+cairo_type1_font_subset_decrypt_charstring (const unsigned char *in, int size, unsigned char *out)
+{
+    unsigned short r = CAIRO_TYPE1_CHARSTRING_KEY;
+    int c, p, i;
+
+    for (i = 0; i < size; i++) {
+        c = *in++;
+	p = c ^ (r >> 8);
+	r = (c + r) * CAIRO_TYPE1_ENCRYPT_C1 + CAIRO_TYPE1_ENCRYPT_C2;
+	*out++ = p;
+    }
+}
+
+static const unsigned char *
+cairo_type1_font_subset_decode_integer (const unsigned char *p, int *integer)
+{
+    if (*p <= 246) {
+        *integer = *p++ - 139;
+    } else if (*p <= 250) {
+        *integer = (p[0] - 247) * 256 + p[1] + 108;
+        p += 2;
+    } else if (*p <= 254) {
+        *integer = -(p[0] - 251) * 256 - p[1] - 108;
+        p += 2;
+    } else {
+        *integer = (p[1] << 24) | (p[2] << 16) | (p[3] << 8) | p[4];
+        p += 5;
+    }
+
+    return p;
+}
+
+static cairo_status_t
+use_standard_encoding_glyph (cairo_type1_font_subset_t *font, int index)
+{
+    const char *glyph_name;
+    unsigned int i;
+
+    if (index < 0 || index > 255)
+	return CAIRO_STATUS_SUCCESS;
+
+    glyph_name = _cairo_ps_standard_encoding_to_glyphname (index);
+    if (glyph_name == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    for (i = 0; i < font->base.num_glyphs; i++) {
+	if (font->glyph_names[i] &&  strcmp (font->glyph_names[i], glyph_name) == 0) {
+	    cairo_type1_font_subset_use_glyph (font, i);
+
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+
+#define TYPE1_CHARSTRING_COMMAND_HSTEM		 0x01
+#define TYPE1_CHARSTRING_COMMAND_VSTEM		 0x03
+#define TYPE1_CHARSTRING_COMMAND_VMOVETO	 0x04
+#define TYPE1_CHARSTRING_COMMAND_RLINETO	 0x05
+#define TYPE1_CHARSTRING_COMMAND_HLINETO	 0x06
+#define TYPE1_CHARSTRING_COMMAND_VLINETO	 0x07
+#define TYPE1_CHARSTRING_COMMAND_RRCURVETO	 0x08
+#define TYPE1_CHARSTRING_COMMAND_CLOSEPATH	 0x09
+#define TYPE1_CHARSTRING_COMMAND_CALLSUBR	 0x0a
+#define TYPE1_CHARSTRING_COMMAND_RETURN		 0x0b
+#define TYPE1_CHARSTRING_COMMAND_ESCAPE		 0x0c
+#define TYPE1_CHARSTRING_COMMAND_HSBW		 0x0d
+#define TYPE1_CHARSTRING_COMMAND_ENDCHAR	 0x0e
+#define TYPE1_CHARSTRING_COMMAND_RMOVETO	 0x15
+#define TYPE1_CHARSTRING_COMMAND_HMOVETO	 0x16
+#define TYPE1_CHARSTRING_COMMAND_VHCURVETO	 0x1e
+#define TYPE1_CHARSTRING_COMMAND_HVCURVETO	 0x1f
+#define TYPE1_CHARSTRING_COMMAND_DOTSECTION	 0x0c00
+#define TYPE1_CHARSTRING_COMMAND_VSTEM3		 0x0c01
+#define TYPE1_CHARSTRING_COMMAND_HSTEM3		 0x0c02
+#define TYPE1_CHARSTRING_COMMAND_SEAC		 0x0c06
+#define TYPE1_CHARSTRING_COMMAND_SBW		 0x0c07
+#define TYPE1_CHARSTRING_COMMAND_DIV		 0x0c0c
+#define TYPE1_CHARSTRING_COMMAND_CALLOTHERSUBR   0x0c10
+#define TYPE1_CHARSTRING_COMMAND_POP	         0x0c11
+#define TYPE1_CHARSTRING_COMMAND_SETCURRENTPOINT 0x0c21
+
+/* Parse the charstring, including recursing into subroutines. Find
+ * the glyph width, subroutines called, and glyphs required by the
+ * SEAC operator. */
+static cairo_status_t
+cairo_type1_font_subset_parse_charstring (cairo_type1_font_subset_t *font,
+					  int                        glyph,
+					  const char                *encrypted_charstring,
+					  int                        encrypted_charstring_length)
+{
+    cairo_status_t status;
+    unsigned char *charstring;
+    const unsigned char *end;
+    const unsigned char *p;
+    int command;
+
+    charstring = _cairo_malloc (encrypted_charstring_length);
+    if (unlikely (charstring == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cairo_type1_font_subset_decrypt_charstring ((const unsigned char *)
+						encrypted_charstring,
+						encrypted_charstring_length,
+						charstring);
+    end = charstring + encrypted_charstring_length;
+    p = charstring + font->lenIV;
+    status = CAIRO_STATUS_SUCCESS;
+    while (p < end) {
+        if (*p < 32) {
+	    command = *p++;
+	    switch (command) {
+	    case TYPE1_CHARSTRING_COMMAND_HSTEM:
+	    case TYPE1_CHARSTRING_COMMAND_VSTEM:
+	    case TYPE1_CHARSTRING_COMMAND_VMOVETO:
+	    case TYPE1_CHARSTRING_COMMAND_RLINETO:
+	    case TYPE1_CHARSTRING_COMMAND_HLINETO:
+	    case TYPE1_CHARSTRING_COMMAND_VLINETO:
+	    case TYPE1_CHARSTRING_COMMAND_RRCURVETO:
+	    case TYPE1_CHARSTRING_COMMAND_CLOSEPATH:
+	    case TYPE1_CHARSTRING_COMMAND_RMOVETO:
+	    case TYPE1_CHARSTRING_COMMAND_HMOVETO:
+	    case TYPE1_CHARSTRING_COMMAND_VHCURVETO:
+	    case TYPE1_CHARSTRING_COMMAND_HVCURVETO:
+	    case TYPE1_CHARSTRING_COMMAND_RETURN:
+	    case TYPE1_CHARSTRING_COMMAND_ENDCHAR:
+	    default:
+		/* stack clearing operator */
+		font->build_stack.sp = 0;
+		break;
+
+	    case TYPE1_CHARSTRING_COMMAND_CALLSUBR:
+		if (font->subset_subrs && font->build_stack.sp > 0) {
+		    double int_val;
+		    if (modf(font->build_stack.stack[--font->build_stack.sp], &int_val) == 0.0) {
+			int subr_num = int_val;
+			if (subr_num >= 0 && subr_num < font->num_subrs) {
+			    font->subrs[subr_num].used = TRUE;
+			    status = cairo_type1_font_subset_parse_charstring (
+				font,
+				glyph,
+				font->subrs[subr_num].subr_string,
+				font->subrs[subr_num].subr_length);
+			    break;
+			}
+		    }
+		}
+		font->subset_subrs = FALSE;
+		break;
+
+	    case TYPE1_CHARSTRING_COMMAND_HSBW:
+		if (font->build_stack.sp < 2) {
+		    status = CAIRO_INT_STATUS_UNSUPPORTED;
+		    goto cleanup;
+		}
+
+		font->glyphs[glyph].width = font->build_stack.stack[1]/font->base.units_per_em;
+		font->build_stack.sp = 0;
+		break;
+
+	    case TYPE1_CHARSTRING_COMMAND_ESCAPE:
+		command = command << 8 | *p++;
+		switch (command) {
+		case TYPE1_CHARSTRING_COMMAND_DOTSECTION:
+		case TYPE1_CHARSTRING_COMMAND_VSTEM3:
+		case TYPE1_CHARSTRING_COMMAND_HSTEM3:
+		case TYPE1_CHARSTRING_COMMAND_SETCURRENTPOINT:
+		default:
+		    /* stack clearing operator */
+		    font->build_stack.sp = 0;
+		    break;
+
+		case TYPE1_CHARSTRING_COMMAND_SEAC:
+		    /* The seac command takes five integer arguments.  The
+		     * last two are glyph indices into the PS standard
+		     * encoding give the names of the glyphs that this
+		     * glyph is composed from.  All we need to do is to
+		     * make sure those glyphs are present in the subset
+		     * under their standard names. */
+		    if (font->build_stack.sp < 5) {
+			status = CAIRO_INT_STATUS_UNSUPPORTED;
+			goto cleanup;
+		    }
+
+		    status = use_standard_encoding_glyph (font, font->build_stack.stack[3]);
+		    if (unlikely (status))
+			goto cleanup;
+
+		    status = use_standard_encoding_glyph (font, font->build_stack.stack[4]);
+		    if (unlikely (status))
+			goto cleanup;
+
+		    font->build_stack.sp = 0;
+		    break;
+
+		case TYPE1_CHARSTRING_COMMAND_SBW:
+		    if (font->build_stack.sp < 4) {
+			status = CAIRO_INT_STATUS_UNSUPPORTED;
+			goto cleanup;
+		    }
+
+		    font->glyphs[glyph].width = font->build_stack.stack[2]/font->base.units_per_em;
+		    font->build_stack.sp = 0;
+		    break;
+
+		case TYPE1_CHARSTRING_COMMAND_DIV:
+		    if (font->build_stack.sp < 2) {
+			status = CAIRO_INT_STATUS_UNSUPPORTED;
+			goto cleanup;
+		    } else {
+			double num1 = font->build_stack.stack[font->build_stack.sp - 2];
+			double num2 = font->build_stack.stack[font->build_stack.sp - 1];
+			font->build_stack.sp--;
+			if (num2 == 0.0) {
+			    status = CAIRO_INT_STATUS_UNSUPPORTED;
+			    goto cleanup;
+			}
+			font->build_stack.stack[font->build_stack.sp - 1] = num1/num2;
+		    }
+		    break;
+
+		case TYPE1_CHARSTRING_COMMAND_CALLOTHERSUBR:
+		    if (font->build_stack.sp < 1) {
+			status = CAIRO_INT_STATUS_UNSUPPORTED;
+			goto cleanup;
+		    }
+
+		    font->build_stack.sp--;
+		    font->ps_stack.sp = 0;
+		    while (font->build_stack.sp)
+			font->ps_stack.stack[font->ps_stack.sp++] = font->build_stack.stack[--font->build_stack.sp];
+
+                    break;
+
+		case TYPE1_CHARSTRING_COMMAND_POP:
+		    if (font->ps_stack.sp < 1) {
+			status = CAIRO_INT_STATUS_UNSUPPORTED;
+			goto cleanup;
+		    }
+
+		    /* T1 spec states that if the interpreter does not
+		     * support executing the callothersub, the results
+		     * must be taken from the callothersub arguments. */
+		    font->build_stack.stack[font->build_stack.sp++] = font->ps_stack.stack[--font->ps_stack.sp];
+		    break;
+		}
+		break;
+	    }
+	} else {
+            /* integer argument */
+	    if (font->build_stack.sp < TYPE1_STACKSIZE) {
+		int val;
+		p = cairo_type1_font_subset_decode_integer (p, &val);
+		font->build_stack.stack[font->build_stack.sp++] = val;
+	    } else {
+		status = CAIRO_INT_STATUS_UNSUPPORTED;
+		goto cleanup;
+	    }
+	}
+    }
+
+cleanup:
+    free (charstring);
+
+    return status;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_build_subr_list (cairo_type1_font_subset_t *font,
+					 int subr_number,
+					 const char *encrypted_charstring, int encrypted_charstring_length,
+					 const char *np, int np_length)
+{
+
+    font->subrs[subr_number].subr_string = encrypted_charstring;
+    font->subrs[subr_number].subr_length = encrypted_charstring_length;
+    font->subrs[subr_number].np = np;
+    font->subrs[subr_number].np_length = np_length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+write_used_subrs (cairo_type1_font_subset_t *font,
+		  int subr_number,
+		  const char *subr_string, int subr_string_length,
+		  const char *np, int np_length)
+{
+    cairo_status_t status;
+    char buffer[256];
+    int length;
+
+    if (!font->subrs[subr_number].used)
+	return CAIRO_STATUS_SUCCESS;
+
+    length = snprintf (buffer, sizeof buffer,
+		       "dup %d %d %s ",
+		       subr_number, subr_string_length, font->rd);
+    status = cairo_type1_font_subset_write_encrypted (font, buffer, length);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_write_encrypted (font,
+					              subr_string,
+						      subr_string_length);
+    if (unlikely (status))
+	return status;
+
+    if (np) {
+	status = cairo_type1_font_subset_write_encrypted (font, np, np_length);
+    } else {
+	length = snprintf (buffer, sizeof buffer, "%s\n", font->np);
+	status = cairo_type1_font_subset_write_encrypted (font, buffer, length);
+    }
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+typedef cairo_status_t (*subr_func_t) (cairo_type1_font_subset_t *font,
+				       int subr_number,
+				       const char *subr_string, int subr_string_length,
+				       const char *np, int np_length);
+
+static cairo_status_t
+cairo_type1_font_for_each_subr (cairo_type1_font_subset_t  *font,
+				const char                 *array_start,
+				const char                 *cleartext_end,
+				subr_func_t                 func,
+				const char                **array_end)
+{
+    const char *p, *subr_string;
+    char *end;
+    int subr_num, subr_length;
+    const char *np;
+    int np_length;
+    cairo_status_t status;
+
+    /* We're looking at "dup" at the start of the first subroutine. The subroutines
+     * definitions are on the form:
+     *
+     *   dup 5 23 RD <23 binary bytes> NP
+     *
+     * or alternatively using -| and |- instead of RD and ND.
+     * The first number is the subroutine number.
+     */
+
+    p = array_start;
+    while (p + 3 < cleartext_end && strncmp (p, "dup", 3) == 0) {
+	p = skip_token (p, cleartext_end);
+
+	/* get subr number */
+	subr_num = strtol (p, &end, 10);
+	if (p == end)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	if (subr_num < 0 || subr_num >= font->num_subrs)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	/* get subr length */
+	p = end;
+	subr_length = strtol (p, &end, 10);
+	if (p == end)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	/* Skip past -| or RD to binary data.  There is exactly one space
+	 * between the -| or RD token and the encrypted data, thus '+ 1'. */
+	subr_string = skip_token (end, cleartext_end) + 1;
+
+	np = NULL;
+	np_length = 0;
+
+	/* Skip binary data and | or NP token. */
+	p = skip_token (subr_string + subr_length, cleartext_end);
+	while (p < cleartext_end && _cairo_isspace(*p))
+	    p++;
+
+	/* Some fonts have "noaccess put" instead of "NP" */
+	if (p + 3 < cleartext_end && strncmp (p, "put", 3) == 0) {
+	    p = skip_token (p, cleartext_end);
+	    while (p < cleartext_end && _cairo_isspace(*p))
+		p++;
+
+	    np = subr_string + subr_length;
+	    np_length = p - np;
+	}
+
+	status = func (font, subr_num,
+		       subr_string, subr_length, np, np_length);
+	if (unlikely (status))
+	    return status;
+
+    }
+
+    *array_end = (char *) p;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_build_glyph_list (cairo_type1_font_subset_t *font,
+					  int glyph_number,
+					  const char *name, int name_length,
+					  const char *encrypted_charstring, int encrypted_charstring_length)
+{
+    char *s;
+    glyph_data_t glyph;
+    cairo_status_t status;
+
+    s = _cairo_malloc (name_length + 1);
+    if (unlikely (s == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    strncpy (s, name, name_length);
+    s[name_length] = 0;
+
+    status = _cairo_array_append (&font->glyph_names_array, &s);
+    if (unlikely (status))
+	return status;
+
+    glyph.subset_index = -1;
+    glyph.width = 0;
+    glyph.encrypted_charstring = encrypted_charstring;
+    glyph.encrypted_charstring_length = encrypted_charstring_length;
+    status = _cairo_array_append (&font->glyphs_array, &glyph);
+
+    return status;
+}
+
+static cairo_status_t
+write_used_glyphs (cairo_type1_font_subset_t *font,
+		   int glyph_number,
+		   const char *name, int name_length,
+		   const char *charstring, int charstring_length)
+{
+    cairo_status_t status;
+    char buffer[256];
+    int length;
+    unsigned int subset_id;
+    int ch;
+    const char *wa_name;
+
+    if (font->glyphs[glyph_number].subset_index < 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (font->scaled_font_subset->is_latin) {
+	/* When using the WinAnsi encoding in PDF, the /Encoding array
+	 * is ignored and instead glyphs are keyed by glyph names. To
+	 * ensure correct rendering we replace the glyph name in the
+	 * font with the standard name.
+         **/
+	subset_id = font->glyphs[glyph_number].subset_index;
+	/* Any additional glyph included for use by the seac operator
+	 * will either have subset_id >= font->scaled_font_subset->num_glyphs
+	 * or will not map to a winansi name (wa_name = NULL).  In this
+	 * case the original name is used.
+	 */
+	if (subset_id > 0 && subset_id < font->scaled_font_subset->num_glyphs) {
+	    ch = font->scaled_font_subset->to_latin_char[subset_id];
+	    wa_name = _cairo_winansi_to_glyphname (ch);
+	    if (wa_name) {
+		name = wa_name;
+		name_length = strlen(name);
+	    }
+	}
+    }
+
+    length = snprintf (buffer, sizeof buffer,
+		       "/%.*s %d %s ",
+		       name_length, name, charstring_length, font->rd);
+    status = cairo_type1_font_subset_write_encrypted (font, buffer, length);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_write_encrypted (font,
+					              charstring,
+						      charstring_length);
+    if (unlikely (status))
+	return status;
+
+    length = snprintf (buffer, sizeof buffer, "%s\n", font->nd);
+    status = cairo_type1_font_subset_write_encrypted (font, buffer, length);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+typedef cairo_status_t (*glyph_func_t) (cairo_type1_font_subset_t *font,
+					int glyph_number,
+			                const char *name, int name_length,
+			                const char *charstring, int charstring_length);
+
+static cairo_status_t
+cairo_type1_font_subset_for_each_glyph (cairo_type1_font_subset_t *font,
+					const char *dict_start,
+					const char *dict_end,
+					glyph_func_t func,
+					const char **dict_out)
+{
+    int charstring_length, name_length;
+    const char *p, *charstring, *name;
+    char *end;
+    cairo_status_t status;
+    int glyph_count;
+
+    /* We're looking at '/' in the name of the first glyph.  The glyph
+     * definitions are on the form:
+     *
+     *   /name 23 RD <23 binary bytes> ND
+     *
+     * or alternatively using -| and |- instead of RD and ND.
+     *
+     * We parse the glyph name and see if it is in the subset.  If it
+     * is, we call the specified callback with the glyph name and
+     * glyph data, otherwise we just skip it.  We need to parse
+     * through a glyph definition; we can't just find the next '/',
+     * since the binary data could contain a '/'.
+     */
+
+    p = dict_start;
+    glyph_count = 0;
+    while (*p == '/') {
+	name = p + 1;
+	p = skip_token (p, dict_end);
+	name_length = p - name;
+
+	charstring_length = strtol (p, &end, 10);
+	if (p == end)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	/* Skip past -| or RD to binary data.  There is exactly one space
+	 * between the -| or RD token and the encrypted data, thus '+ 1'. */
+	charstring = skip_token (end, dict_end) + 1;
+
+	/* Skip binary data and |- or ND token. */
+	p = skip_token (charstring + charstring_length, dict_end);
+	while (p < dict_end && _cairo_isspace(*p))
+	    p++;
+
+	/* In case any of the skip_token() calls above reached EOF, p will
+	 * be equal to dict_end. */
+	if (p == dict_end)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	status = func (font, glyph_count++,
+		       name, name_length,
+		       charstring, charstring_length);
+	if (unlikely (status))
+	    return status;
+    }
+
+    *dict_out = p;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
+static cairo_status_t
+cairo_type1_font_subset_write_private_dict (cairo_type1_font_subset_t *font,
+					    const char                *name)
+{
+    cairo_status_t status;
+    const char *p, *subrs, *charstrings, *array_start, *array_end, *dict_start, *dict_end;
+    const char *lenIV_start, *lenIV_end, *closefile_token;
+    char buffer[32], *lenIV_str, *subr_count_end, *glyph_count_end;
+    int ret, lenIV, length;
+    const cairo_scaled_font_backend_t *backend;
+    unsigned int i;
+    int glyph, j;
+
+    /* The private dict holds hint information, common subroutines and
+     * the actual glyph definitions (charstrings).
+     *
+     * What we do here is scan directly to the /Subrs token, which
+     * marks the beginning of the subroutines. We read in all the
+     * subroutines, then move on to the /CharString token, which marks
+     * the beginning of the glyph definitions, and read in the charstrings.
+     *
+     * The charstrings are parsed to extract glyph widths, work out
+     * which subroutines are called, and to see if any extra glyphs
+     * need to be included due to the use of the seac glyph combining
+     * operator.
+     *
+     * Finally, the private dict is copied to the subset font minus the
+     * subroutines and charstrings not required.
+     */
+
+    /* Determine lenIV, the number of random characters at the start of
+       each encrypted charstring. The default is 4, but this can be
+       overridden in the private dict. */
+    font->lenIV = 4;
+    if ((lenIV_start = find_token (font->cleartext, font->cleartext_end, "/lenIV")) != NULL) {
+        lenIV_start += 6;
+        lenIV_end = find_token (lenIV_start, font->cleartext_end, "def");
+        if (lenIV_end == NULL)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+        lenIV_str = _cairo_malloc (lenIV_end - lenIV_start + 1);
+        if (unlikely (lenIV_str == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+        strncpy (lenIV_str, lenIV_start, lenIV_end - lenIV_start);
+        lenIV_str[lenIV_end - lenIV_start] = 0;
+
+        ret = sscanf(lenIV_str, "%d", &lenIV);
+        free(lenIV_str);
+
+        if (unlikely (ret <= 0))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+        /* Apparently some fonts signal unencrypted charstrings with a negative lenIV,
+           though this is not part of the Type 1 Font Format specification.  See, e.g.
+           http://lists.gnu.org/archive/html/freetype-devel/2000-06/msg00064.html. */
+        if (unlikely (lenIV < 0))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+        font->lenIV = lenIV;
+    }
+
+    /* Find start of Subrs */
+    subrs = find_token (font->cleartext, font->cleartext_end, "/Subrs");
+    if (subrs == NULL) {
+	font->subset_subrs = FALSE;
+	p = font->cleartext;
+	array_start = NULL;
+	goto skip_subrs;
+    }
+
+    /* Scan past /Subrs and get the array size. */
+    p = subrs + strlen ("/Subrs");
+    font->num_subrs = strtol (p, &subr_count_end, 10);
+    if (subr_count_end == p)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (font->num_subrs <= 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    font->subrs = calloc (font->num_subrs, sizeof (font->subrs[0]));
+    if (unlikely (font->subrs == NULL))
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* look for "dup" which marks the beginning of the first subr */
+    array_start = find_token (subr_count_end, font->cleartext_end, "dup");
+    if (array_start == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Read in the subroutines */
+    status = cairo_type1_font_for_each_subr (font,
+					     array_start,
+					     font->cleartext_end,
+					     cairo_type1_font_subset_build_subr_list,
+					     &array_end);
+    if (unlikely(status))
+	return status;
+
+    p = array_end;
+skip_subrs:
+
+    /* Find start of CharStrings */
+    charstrings = find_token (p, font->cleartext_end, "/CharStrings");
+    if (charstrings == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Scan past /CharStrings and the integer following it. */
+    p = charstrings + strlen ("/CharStrings");
+    strtol (p, &glyph_count_end, 10);
+    if (p == glyph_count_end)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Look for a '/' which marks the beginning of the first glyph
+     * definition. */
+    for (p = glyph_count_end; p < font->cleartext_end; p++)
+	if (*p == '/')
+	    break;
+    if (p == font->cleartext_end)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    dict_start = p;
+
+    /* Now that we have the private dictionary broken down in
+     * sections, do the first pass through the glyph definitions to
+     * build a list of glyph names and charstrings. */
+    status = cairo_type1_font_subset_for_each_glyph (font,
+						     dict_start,
+						     font->cleartext_end,
+						     cairo_type1_font_subset_build_glyph_list,
+						     &dict_end);
+    if (unlikely(status))
+	return status;
+
+    font->glyphs = _cairo_array_index (&font->glyphs_array, 0);
+    font->glyph_names = _cairo_array_index (&font->glyph_names_array, 0);
+    font->base.num_glyphs = _cairo_array_num_elements (&font->glyphs_array);
+    font->subset_index_to_glyphs = calloc (font->base.num_glyphs, sizeof font->subset_index_to_glyphs[0]);
+    if (unlikely (font->subset_index_to_glyphs == NULL))
+        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    backend = font->scaled_font_subset->scaled_font->backend;
+    if (!backend->index_to_glyph_name)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Find the glyph number corresponding to each glyph in the subset
+     * and mark it as in use */
+
+    for (i = 0; i < font->scaled_font_subset->num_glyphs; i++) {
+	unsigned long index;
+
+	status = backend->index_to_glyph_name (font->scaled_font_subset->scaled_font,
+					       font->glyph_names,
+					       font->base.num_glyphs,
+					       font->scaled_font_subset->glyphs[i],
+					       &index);
+	if (unlikely(status))
+	    return status;
+
+	cairo_type1_font_subset_use_glyph (font, index);
+    }
+
+    /* Go through the charstring of each glyph in use, get the glyph
+     * width and figure out which extra glyphs may be required by the
+     * seac operator (which may cause font->num_glyphs to increase
+     * while this loop is executing). Also subset the Subrs. */
+    for (j = 0; j < font->num_glyphs; j++) {
+	glyph = font->subset_index_to_glyphs[j];
+	font->build_stack.sp = 0;
+	font->ps_stack.sp = 0;
+	status = cairo_type1_font_subset_parse_charstring (font,
+							   glyph,
+							   font->glyphs[glyph].encrypted_charstring,
+							   font->glyphs[glyph].encrypted_charstring_length);
+	if (unlikely (status))
+	    return status;
+    }
+
+    /* Always include the first five subroutines in case the Flex/hint mechanism is
+     * being used. */
+    for (j = 0; j < MIN (font->num_subrs, 5); j++) {
+	font->subrs[j].used = TRUE;
+    }
+
+    closefile_token = find_token (dict_end, font->cleartext_end, "closefile");
+    if (closefile_token == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* We're ready to start outputting. First write the header,
+     * i.e. the public part of the font dict.*/
+    status = cairo_type1_font_subset_write_header (font, name);
+    if (unlikely (status))
+	return status;
+
+    font->base.header_size = _cairo_output_stream_get_position (font->output);
+
+    /* Start outputting the private dict */
+    if (font->subset_subrs) {
+	/* First output everything up to the start of the Subrs array. */
+	status = cairo_type1_font_subset_write_encrypted (font, font->cleartext,
+							  array_start - font->cleartext);
+	if (unlikely (status))
+	    return status;
+
+	/* Write out the subr definitions for each of the glyphs in
+	 * the subset. */
+	status = cairo_type1_font_for_each_subr (font,
+						 array_start,
+						 font->cleartext_end,
+						 write_used_subrs,
+						 &p);
+	if (unlikely (status))
+	    return status;
+    } else {
+	p = font->cleartext;
+    }
+
+    /* If subr subsetting, output everything from end of subrs to
+     * start of /CharStrings token.  If not subr subsetting, output
+     * everything start of private dict to start of /CharStrings
+     * token. */
+    status = cairo_type1_font_subset_write_encrypted (font, p, charstrings - p);
+    if (unlikely (status))
+	return status;
+
+    /* Write out new charstring count */
+    length = snprintf (buffer, sizeof buffer,
+		       "/CharStrings %d", font->num_glyphs);
+    status = cairo_type1_font_subset_write_encrypted (font, buffer, length);
+    if (unlikely (status))
+	return status;
+
+    /* Write out text between the charstring count and the first
+     * charstring definition */
+    status = cairo_type1_font_subset_write_encrypted (font, glyph_count_end,
+	                                          dict_start - glyph_count_end);
+    if (unlikely (status))
+	return status;
+
+    /* Write out the charstring definitions for each of the glyphs in
+     * the subset. */
+    status = cairo_type1_font_subset_for_each_glyph (font,
+						     dict_start,
+						     font->cleartext_end,
+						     write_used_glyphs,
+						     &p);
+    if (unlikely (status))
+	return status;
+
+    /* Output what's left between the end of the glyph definitions and
+     * the end of the private dict to the output. */
+    status = cairo_type1_font_subset_write_encrypted (font, p,
+	                        closefile_token - p + strlen ("closefile") + 1);
+    if (unlikely (status))
+	return status;
+
+    if (font->hex_encode)
+	_cairo_output_stream_write (font->output, "\n", 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_write_trailer(cairo_type1_font_subset_t *font)
+{
+    const char *cleartomark_token;
+    int i;
+    static const char zeros[65] =
+	"0000000000000000000000000000000000000000000000000000000000000000\n";
+
+
+    for (i = 0; i < 8; i++)
+	_cairo_output_stream_write (font->output, zeros, sizeof zeros);
+
+    cleartomark_token = find_token (font->type1_data, font->type1_end, "cleartomark");
+    if (cleartomark_token) {
+	/* Some fonts have conditional save/restore around the entire
+	 * font dict, so we need to retain whatever postscript code
+	 * that may come after 'cleartomark'. */
+
+	_cairo_output_stream_write (font->output, cleartomark_token,
+				    font->type1_end - cleartomark_token);
+	if (*(font->type1_end - 1) != '\n')
+	    _cairo_output_stream_printf (font->output, "\n");
+
+    } else if (!font->eexec_segment_is_ascii) {
+	/* Fonts embedded in PDF may omit the fixed-content portion
+	 * that includes the 'cleartomark' operator. Type 1 in PDF is
+	 * always binary. */
+
+	_cairo_output_stream_printf (font->output, "cleartomark\n");
+    } else {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* some fonts do not have a newline at the end of the last line */
+    _cairo_output_stream_printf (font->output, "\n");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+type1_font_write (void *closure, const unsigned char *data, unsigned int length)
+{
+    cairo_type1_font_subset_t *font = closure;
+
+    return _cairo_array_append_multiple (&font->contents, data, length);
+}
+
+static cairo_status_t
+cairo_type1_font_subset_write (cairo_type1_font_subset_t *font,
+			       const char *name)
+{
+    cairo_status_t status;
+
+    status = cairo_type1_font_subset_find_segments (font);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_decrypt_eexec_segment (font);
+    if (unlikely (status))
+	return status;
+
+    /* Determine which glyph definition delimiters to use. */
+    if (find_token (font->cleartext, font->cleartext_end, "/-|") != NULL) {
+	font->rd = "-|";
+	font->nd = "|-";
+	font->np = "|";
+    } else if (find_token (font->cleartext, font->cleartext_end, "/RD") != NULL) {
+	font->rd = "RD";
+	font->nd = "ND";
+	font->np = "NP";
+    } else {
+	/* Don't know *what* kind of font this is... */
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    font->eexec_key = CAIRO_TYPE1_PRIVATE_DICT_KEY;
+    font->hex_column = 0;
+
+    status = cairo_type1_font_subset_get_bbox (font);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_get_fontname (font);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_write_private_dict (font, name);
+    if (unlikely (status))
+	return status;
+
+    font->base.data_size = _cairo_output_stream_get_position (font->output) -
+	font->base.header_size;
+
+    status = cairo_type1_font_subset_write_trailer (font);
+    if (unlikely (status))
+	return status;
+
+    font->base.trailer_size =
+	_cairo_output_stream_get_position (font->output) -
+	font->base.header_size - font->base.data_size;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+check_fontdata_is_type1 (const unsigned char *data, long length)
+{
+    /* Test for  Type 1 Binary (PFB) */
+    if (length > 2 && data[0] == 0x80 && data[1] == 0x01)
+	return TRUE;
+
+    /* Test for Type 1 1 ASCII (PFA) */
+    if (length > 2 && data[0] == '%' && data[1] == '!')
+	return TRUE;
+
+    return FALSE;
+}
+
+static cairo_status_t
+cairo_type1_font_subset_generate (void       *abstract_font,
+				  const char *name)
+
+{
+    cairo_type1_font_subset_t *font = abstract_font;
+    cairo_scaled_font_t *scaled_font;
+    cairo_status_t status;
+    unsigned long data_length;
+
+    scaled_font = font->scaled_font_subset->scaled_font;
+    if (!scaled_font->backend->load_type1_data)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = scaled_font->backend->load_type1_data (scaled_font, 0, NULL, &data_length);
+    if (status)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    font->type1_length = data_length;
+    font->type1_data = _cairo_malloc (font->type1_length);
+    if (unlikely (font->type1_data == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = scaled_font->backend->load_type1_data (scaled_font, 0,
+						    (unsigned char *) font->type1_data,
+						    &data_length);
+    if (unlikely (status))
+        return status;
+
+    if (!check_fontdata_is_type1 ((unsigned char *)font->type1_data, data_length))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_array_grow_by (&font->contents, 4096);
+    if (unlikely (status))
+	return status;
+
+    font->output = _cairo_output_stream_create (type1_font_write, NULL, font);
+    if (unlikely ((status = font->output->status)))
+	return status;
+
+    status = cairo_type1_font_subset_write (font, name);
+    if (unlikely (status))
+	return status;
+
+    font->base.data = _cairo_array_index (&font->contents, 0);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_type1_font_subset_fini (cairo_type1_font_subset_t *font)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    unsigned int i;
+
+    /* If the subset generation failed, some of the pointers below may
+     * be NULL depending on at which point the error occurred. */
+
+    _cairo_array_fini (&font->contents);
+
+    free (font->type1_data);
+    for (i = 0; i < _cairo_array_num_elements (&font->glyph_names_array); i++) {
+	char **s;
+
+	s = _cairo_array_index (&font->glyph_names_array, i);
+	free (*s);
+    }
+    _cairo_array_fini (&font->glyph_names_array);
+    _cairo_array_fini (&font->glyphs_array);
+
+    free (font->subrs);
+
+    if (font->output != NULL)
+	status = _cairo_output_stream_destroy (font->output);
+
+    free (font->base.base_font);
+
+    free (font->subset_index_to_glyphs);
+
+    free (font->cleartext);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_type1_subset_init (cairo_type1_subset_t		*type1_subset,
+			  const char			*name,
+			  cairo_scaled_font_subset_t	*scaled_font_subset,
+                          cairo_bool_t                   hex_encode)
+{
+    cairo_type1_font_subset_t font;
+    cairo_status_t status;
+    cairo_bool_t is_synthetic;
+    unsigned long length;
+    unsigned int i;
+    char buf[30];
+
+    /* We need to use a fallback font if this font differs from the type1 outlines. */
+    if (scaled_font_subset->scaled_font->backend->is_synthetic) {
+	status = scaled_font_subset->scaled_font->backend->is_synthetic (scaled_font_subset->scaled_font, &is_synthetic);
+	if (unlikely (status))
+	    return status;
+
+	if (is_synthetic)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = _cairo_type1_font_subset_init (&font, scaled_font_subset, hex_encode);
+    if (unlikely (status))
+	return status;
+
+    status = cairo_type1_font_subset_generate (&font, name);
+    if (unlikely (status))
+	goto fail1;
+
+    if (font.base.base_font) {
+	type1_subset->base_font = strdup (font.base.base_font);
+    } else {
+        snprintf(buf, sizeof (buf), "CairoFont-%u-%u",
+                 scaled_font_subset->font_id, scaled_font_subset->subset_id);
+	type1_subset->base_font = strdup (buf);
+    }
+    if (unlikely (type1_subset->base_font == NULL))
+	goto fail1;
+
+    type1_subset->widths = calloc (sizeof (double), font.num_glyphs);
+    if (unlikely (type1_subset->widths == NULL))
+	goto fail2;
+    for (i = 0; i < font.base.num_glyphs; i++) {
+	if (font.glyphs[i].subset_index < 0)
+	    continue;
+	type1_subset->widths[font.glyphs[i].subset_index] =
+	    font.glyphs[i].width;
+    }
+
+    type1_subset->x_min = font.base.x_min;
+    type1_subset->y_min = font.base.y_min;
+    type1_subset->x_max = font.base.x_max;
+    type1_subset->y_max = font.base.y_max;
+    type1_subset->ascent = font.base.ascent;
+    type1_subset->descent = font.base.descent;
+
+    length = font.base.header_size +
+	     font.base.data_size +
+	     font.base.trailer_size;
+    type1_subset->data = _cairo_malloc (length);
+    if (unlikely (type1_subset->data == NULL))
+	goto fail3;
+
+    memcpy (type1_subset->data,
+	    _cairo_array_index (&font.contents, 0), length);
+
+    type1_subset->header_length = font.base.header_size;
+    type1_subset->data_length = font.base.data_size;
+    type1_subset->trailer_length = font.base.trailer_size;
+
+    return _cairo_type1_font_subset_fini (&font);
+
+ fail3:
+    free (type1_subset->widths);
+ fail2:
+    free (type1_subset->base_font);
+ fail1:
+    _cairo_type1_font_subset_fini (&font);
+
+    return status;
+}
+
+void
+_cairo_type1_subset_fini (cairo_type1_subset_t *subset)
+{
+    free (subset->base_font);
+    free (subset->widths);
+    free (subset->data);
+}
+
+cairo_bool_t
+_cairo_type1_scaled_font_is_type1 (cairo_scaled_font_t *scaled_font)
+{
+    cairo_status_t status;
+    unsigned long length;
+    unsigned char buf[64];
+
+    if (!scaled_font->backend->load_type1_data)
+	return FALSE;
+
+    status = scaled_font->backend->load_type1_data (scaled_font, 0, NULL, &length);
+    if (status)
+	return FALSE;
+
+    /* We only need a few bytes to test for Type 1 */
+    if (length > sizeof (buf))
+	length = sizeof (buf);
+
+    status = scaled_font->backend->load_type1_data (scaled_font, 0, buf, &length);
+    if (status)
+	return FALSE;
+
+    return check_fontdata_is_type1 (buf, length);
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-type3-glyph-surface-private.h b/libs/cairo-1.16.0/src/cairo-type3-glyph-surface-private.h
new file mode 100644
index 0000000..6f40f1c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-type3-glyph-surface-private.h
@@ -0,0 +1,89 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_TYPE3_GLYPH_SURFACE_PRIVATE_H
+#define CAIRO_TYPE3_GLYPH_SURFACE_PRIVATE_H
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-pdf-operators-private.h"
+
+typedef cairo_int_status_t
+(*cairo_type3_glyph_surface_emit_image_t) (cairo_image_surface_t *image,
+					   cairo_output_stream_t	*stream);
+
+typedef struct cairo_type3_glyph_surface {
+    cairo_surface_t base;
+
+    cairo_scaled_font_t *scaled_font;
+    cairo_output_stream_t *stream;
+    cairo_pdf_operators_t pdf_operators;
+    cairo_matrix_t cairo_to_pdf;
+    cairo_type3_glyph_surface_emit_image_t emit_image;
+
+    cairo_surface_clipper_t clipper;
+} cairo_type3_glyph_surface_t;
+
+cairo_private cairo_surface_t *
+_cairo_type3_glyph_surface_create (cairo_scaled_font_t			 *scaled_font,
+				   cairo_output_stream_t		 *stream,
+				   cairo_type3_glyph_surface_emit_image_t emit_image,
+				   cairo_scaled_font_subsets_t		 *font_subsets,
+				   cairo_bool_t                           ps_output);
+
+cairo_private void
+_cairo_type3_glyph_surface_set_font_subsets_callback (void				    *abstract_surface,
+						      cairo_pdf_operators_use_font_subset_t  use_font_subset,
+						      void				    *closure);
+
+cairo_private cairo_status_t
+_cairo_type3_glyph_surface_analyze_glyph (void		     *abstract_surface,
+					  unsigned long	      glyph_index);
+
+cairo_private cairo_status_t
+_cairo_type3_glyph_surface_emit_glyph (void		     *abstract_surface,
+				       cairo_output_stream_t *stream,
+				       unsigned long	      glyph_index,
+				       cairo_box_t           *bbox,
+				       double                *width);
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
+
+#endif /* CAIRO_TYPE3_GLYPH_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-type3-glyph-surface.c b/libs/cairo-1.16.0/src/cairo-type3-glyph-surface.c
new file mode 100644
index 0000000..6b21023
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-type3-glyph-surface.c
@@ -0,0 +1,560 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_FONT_SUBSET
+
+#include "cairo-type3-glyph-surface-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-analysis-surface-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-clipper-private.h"
+
+static const cairo_surface_backend_t cairo_type3_glyph_surface_backend;
+
+static cairo_status_t
+_cairo_type3_glyph_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+							cairo_path_fixed_t *path,
+							cairo_fill_rule_t   fill_rule,
+							double		    tolerance,
+							cairo_antialias_t   antialias)
+{
+    cairo_type3_glyph_surface_t *surface = cairo_container_of (clipper,
+							       cairo_type3_glyph_surface_t,
+							       clipper);
+
+    if (path == NULL) {
+	_cairo_output_stream_printf (surface->stream, "Q q\n");
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    return _cairo_pdf_operators_clip (&surface->pdf_operators,
+				      path,
+				      fill_rule);
+}
+
+cairo_surface_t *
+_cairo_type3_glyph_surface_create (cairo_scaled_font_t			 *scaled_font,
+				   cairo_output_stream_t		 *stream,
+				   cairo_type3_glyph_surface_emit_image_t emit_image,
+				   cairo_scaled_font_subsets_t		 *font_subsets,
+				   cairo_bool_t ps)
+{
+    cairo_type3_glyph_surface_t *surface;
+
+    if (unlikely (stream != NULL && stream->status))
+	return _cairo_surface_create_in_error (stream->status);
+
+    surface = _cairo_malloc (sizeof (cairo_type3_glyph_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_type3_glyph_surface_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 TRUE); /* is_vector */
+
+    surface->scaled_font = scaled_font;
+    surface->stream = stream;
+    surface->emit_image = emit_image;
+
+    /* Setup the transform from the user-font device space to Type 3
+     * font space. The Type 3 font space is defined by the FontMatrix
+     * entry in the Type 3 dictionary. In the PDF backend this is an
+     * identity matrix. */
+    surface->cairo_to_pdf = scaled_font->scale_inverse;
+
+    _cairo_pdf_operators_init (&surface->pdf_operators,
+			       surface->stream,
+			       &surface->cairo_to_pdf,
+			       font_subsets,
+			       ps);
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_type3_glyph_surface_clipper_intersect_clip_path);
+
+    return &surface->base;
+}
+
+static cairo_status_t
+_cairo_type3_glyph_surface_emit_image (cairo_type3_glyph_surface_t *surface,
+				       cairo_image_surface_t       *image,
+				       cairo_matrix_t              *image_matrix)
+{
+    cairo_status_t status;
+
+    /* The only image type supported by Type 3 fonts are 1-bit masks */
+    image = _cairo_image_surface_coerce_to_format (image, CAIRO_FORMAT_A1);
+    status = image->base.status;
+    if (unlikely (status))
+	return status;
+
+    _cairo_output_stream_printf (surface->stream,
+				 "q %f %f %f %f %f %f cm\n",
+				 image_matrix->xx,
+				 image_matrix->xy,
+				 image_matrix->yx,
+				 image_matrix->yy,
+				 image_matrix->x0,
+				 image_matrix->y0);
+
+    status = surface->emit_image (image, surface->stream);
+    cairo_surface_destroy (&image->base);
+
+    _cairo_output_stream_printf (surface->stream,
+				 "Q\n");
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_type3_glyph_surface_emit_image_pattern (cairo_type3_glyph_surface_t *surface,
+					       cairo_image_surface_t       *image,
+					       const cairo_matrix_t              *pattern_matrix)
+{
+    cairo_matrix_t mat, upside_down;
+    cairo_status_t status;
+
+    if (image->width == 0 || image->height == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    mat = *pattern_matrix;
+
+    /* Get the pattern space to user space matrix  */
+    status = cairo_matrix_invert (&mat);
+
+    /* cairo_pattern_set_matrix ensures the matrix is invertible */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    /* Make this a pattern space to Type 3 font space matrix */
+    cairo_matrix_multiply (&mat, &mat, &surface->cairo_to_pdf);
+
+    /* PDF images are in a 1 unit by 1 unit image space. Turn the 1 by
+     * 1 image upside down to convert to flip the Y-axis going from
+     * cairo to PDF. Then scale the image up to the required size. */
+    cairo_matrix_scale (&mat, image->width, image->height);
+    cairo_matrix_init (&upside_down, 1, 0, 0, -1, 0, 1);
+    cairo_matrix_multiply (&mat, &upside_down, &mat);
+
+    return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
+}
+
+static cairo_status_t
+_cairo_type3_glyph_surface_finish (void *abstract_surface)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+
+    return _cairo_pdf_operators_fini (&surface->pdf_operators);
+}
+
+static cairo_int_status_t
+_cairo_type3_glyph_surface_paint (void			*abstract_surface,
+				  cairo_operator_t	 op,
+				  const cairo_pattern_t	*source,
+				  const cairo_clip_t	*clip)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+    const cairo_surface_pattern_t *pattern;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_status_t status;
+
+    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_INT_STATUS_IMAGE_FALLBACK;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    status = _cairo_surface_acquire_source_image (pattern->surface,
+						  &image, &image_extra);
+    if (unlikely (status))
+	goto fail;
+
+    status = _cairo_type3_glyph_surface_emit_image_pattern (surface,
+							    image,
+							    &pattern->base.matrix);
+
+fail:
+    _cairo_surface_release_source_image (pattern->surface, image, image_extra);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_type3_glyph_surface_mask (void			*abstract_surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_pattern_t	*mask,
+				 const cairo_clip_t	*clip)
+{
+    return _cairo_type3_glyph_surface_paint (abstract_surface,
+					     op, mask,
+					     clip);
+}
+
+static cairo_int_status_t
+_cairo_type3_glyph_surface_stroke (void			*abstract_surface,
+				   cairo_operator_t	 op,
+				   const cairo_pattern_t *source,
+				   const cairo_path_fixed_t	*path,
+				   const cairo_stroke_style_t	*style,
+				   const cairo_matrix_t	*ctm,
+				   const cairo_matrix_t	*ctm_inverse,
+				   double		 tolerance,
+				   cairo_antialias_t	 antialias,
+				   const cairo_clip_t	*clip)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_pdf_operators_stroke (&surface->pdf_operators,
+					path,
+					style,
+					ctm,
+					ctm_inverse);
+}
+
+static cairo_int_status_t
+_cairo_type3_glyph_surface_fill (void			*abstract_surface,
+				 cairo_operator_t	 op,
+				 const cairo_pattern_t	*source,
+				 const cairo_path_fixed_t	*path,
+				 cairo_fill_rule_t	 fill_rule,
+				 double			 tolerance,
+				 cairo_antialias_t	 antialias,
+				 const cairo_clip_t		*clip)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_pdf_operators_fill (&surface->pdf_operators,
+				      path,
+				      fill_rule);
+}
+
+static cairo_int_status_t
+_cairo_type3_glyph_surface_show_glyphs (void		     *abstract_surface,
+					cairo_operator_t      op,
+					const cairo_pattern_t *source,
+					cairo_glyph_t        *glyphs,
+					int		      num_glyphs,
+					cairo_scaled_font_t  *scaled_font,
+					const cairo_clip_t     *clip)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+    cairo_scaled_font_t *font;
+    cairo_matrix_t new_ctm;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	return status;
+
+    cairo_matrix_multiply (&new_ctm, &surface->cairo_to_pdf, &scaled_font->ctm);
+    font = cairo_scaled_font_create (scaled_font->font_face,
+				     &scaled_font->font_matrix,
+				     &new_ctm,
+				     &scaled_font->options);
+    if (unlikely (font->status))
+	return font->status;
+
+    status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
+						    NULL, 0,
+						    glyphs, num_glyphs,
+						    NULL, 0,
+						    FALSE,
+						    font);
+
+    cairo_scaled_font_destroy (font);
+
+    return status;
+}
+
+static const cairo_surface_backend_t cairo_type3_glyph_surface_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_TYPE3_GLYPH,
+    _cairo_type3_glyph_surface_finish,
+
+    _cairo_default_context_create, /* XXX usable through a context? */
+
+    NULL, /* create similar */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    NULL, /* source */
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* copy page */
+    NULL, /* show page */
+
+    NULL, /* _cairo_type3_glyph_surface_get_extents */
+    NULL, /* _cairo_type3_glyph_surface_get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_type3_glyph_surface_paint,
+    _cairo_type3_glyph_surface_mask,
+    _cairo_type3_glyph_surface_stroke,
+    _cairo_type3_glyph_surface_fill,
+    NULL, /* fill-stroke */
+    _cairo_type3_glyph_surface_show_glyphs,
+};
+
+static void
+_cairo_type3_glyph_surface_set_stream (cairo_type3_glyph_surface_t *surface,
+				       cairo_output_stream_t       *stream)
+{
+    surface->stream = stream;
+    _cairo_pdf_operators_set_stream (&surface->pdf_operators, stream);
+}
+
+static cairo_status_t
+_cairo_type3_glyph_surface_emit_fallback_image (cairo_type3_glyph_surface_t *surface,
+						unsigned long		     glyph_index)
+{
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_status_t status;
+    cairo_image_surface_t *image;
+    cairo_matrix_t mat;
+    double x, y;
+
+    status = _cairo_scaled_glyph_lookup (surface->scaled_font,
+					 glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS |
+					 CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					 &scaled_glyph);
+    if (unlikely (status))
+	return status;
+
+    image = scaled_glyph->surface;
+    if (image->width == 0 || image->height == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    x = _cairo_fixed_to_double (scaled_glyph->bbox.p1.x);
+    y = _cairo_fixed_to_double (scaled_glyph->bbox.p2.y);
+    cairo_matrix_init(&mat, image->width, 0,
+		      0, -image->height,
+		      x, y);
+    cairo_matrix_multiply (&mat, &mat, &surface->scaled_font->scale_inverse);
+
+    return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
+}
+
+void
+_cairo_type3_glyph_surface_set_font_subsets_callback (void		     		    *abstract_surface,
+						      cairo_pdf_operators_use_font_subset_t  use_font_subset,
+						      void				    *closure)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+
+    if (unlikely (surface->base.status))
+	return;
+
+    _cairo_pdf_operators_set_font_subsets_callback (&surface->pdf_operators,
+						    use_font_subset,
+						    closure);
+}
+
+cairo_status_t
+_cairo_type3_glyph_surface_analyze_glyph (void		     *abstract_surface,
+					  unsigned long	      glyph_index)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_int_status_t status, status2;
+    cairo_output_stream_t *null_stream;
+
+    if (unlikely (surface->base.status))
+	return surface->base.status;
+
+    null_stream = _cairo_null_stream_create ();
+    if (unlikely (null_stream->status))
+	return null_stream->status;
+
+    _cairo_type3_glyph_surface_set_stream (surface, null_stream);
+
+    _cairo_scaled_font_freeze_cache (surface->scaled_font);
+    status = _cairo_scaled_glyph_lookup (surface->scaled_font,
+					 glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
+					 &scaled_glyph);
+
+    if (_cairo_int_status_is_error (status))
+	goto cleanup;
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	status = CAIRO_INT_STATUS_SUCCESS;
+	goto cleanup;
+    }
+
+    status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
+					      &surface->base);
+    if (unlikely (status))
+	goto cleanup;
+
+    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
+    if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
+	status = CAIRO_INT_STATUS_SUCCESS;
+
+cleanup:
+    _cairo_scaled_font_thaw_cache (surface->scaled_font);
+
+    status2 = _cairo_output_stream_destroy (null_stream);
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	status = status2;
+
+    return status;
+}
+
+cairo_status_t
+_cairo_type3_glyph_surface_emit_glyph (void		     *abstract_surface,
+				       cairo_output_stream_t *stream,
+				       unsigned long	      glyph_index,
+				       cairo_box_t           *bbox,
+				       double                *width)
+{
+    cairo_type3_glyph_surface_t *surface = abstract_surface;
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_int_status_t status, status2;
+    double x_advance, y_advance;
+    cairo_matrix_t font_matrix_inverse;
+
+    if (unlikely (surface->base.status))
+	return surface->base.status;
+
+    _cairo_type3_glyph_surface_set_stream (surface, stream);
+
+    _cairo_scaled_font_freeze_cache (surface->scaled_font);
+    status = _cairo_scaled_glyph_lookup (surface->scaled_font,
+					 glyph_index,
+					 CAIRO_SCALED_GLYPH_INFO_METRICS |
+					 CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
+					 &scaled_glyph);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	status = _cairo_scaled_glyph_lookup (surface->scaled_font,
+					     glyph_index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+	if (status == CAIRO_INT_STATUS_SUCCESS)
+	    status = CAIRO_INT_STATUS_IMAGE_FALLBACK;
+    }
+    if (_cairo_int_status_is_error (status)) {
+	_cairo_scaled_font_thaw_cache (surface->scaled_font);
+	return status;
+    }
+
+    x_advance = scaled_glyph->metrics.x_advance;
+    y_advance = scaled_glyph->metrics.y_advance;
+    font_matrix_inverse = surface->scaled_font->font_matrix;
+    status2 = cairo_matrix_invert (&font_matrix_inverse);
+
+    /* The invertability of font_matrix is tested in
+     * pdf_operators_show_glyphs before any glyphs are mapped to the
+     * subset. */
+    assert (status2 == CAIRO_INT_STATUS_SUCCESS);
+
+    cairo_matrix_transform_distance (&font_matrix_inverse, &x_advance, &y_advance);
+    *width = x_advance;
+
+    *bbox = scaled_glyph->bbox;
+    _cairo_matrix_transform_bounding_box_fixed (&surface->scaled_font->scale_inverse,
+						bbox, NULL);
+
+    _cairo_output_stream_printf (surface->stream,
+				 "%f 0 %f %f %f %f d1\n",
+                                 x_advance,
+				 _cairo_fixed_to_double (bbox->p1.x),
+				 _cairo_fixed_to_double (bbox->p1.y),
+				 _cairo_fixed_to_double (bbox->p2.x),
+				 _cairo_fixed_to_double (bbox->p2.y));
+
+    if (status == CAIRO_INT_STATUS_SUCCESS) {
+	cairo_output_stream_t *mem_stream;
+
+	mem_stream = _cairo_memory_stream_create ();
+	status = mem_stream->status;
+	if (unlikely (status))
+	    goto FAIL;
+
+	_cairo_type3_glyph_surface_set_stream (surface, mem_stream);
+
+	_cairo_output_stream_printf (surface->stream, "q\n");
+	status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
+						  &surface->base);
+
+	status2 = _cairo_pdf_operators_flush (&surface->pdf_operators);
+	if (status == CAIRO_INT_STATUS_SUCCESS)
+	    status = status2;
+
+	_cairo_output_stream_printf (surface->stream, "Q\n");
+
+	_cairo_type3_glyph_surface_set_stream (surface, stream);
+	if (status == CAIRO_INT_STATUS_SUCCESS)
+	    _cairo_memory_stream_copy (mem_stream, stream);
+
+	status2 = _cairo_output_stream_destroy (mem_stream);
+	if (status == CAIRO_INT_STATUS_SUCCESS)
+	    status = status2;
+    }
+
+    if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
+	status = _cairo_type3_glyph_surface_emit_fallback_image (surface, glyph_index);
+
+  FAIL:
+    _cairo_scaled_font_thaw_cache (surface->scaled_font);
+
+    return status;
+}
+
+#endif /* CAIRO_HAS_FONT_SUBSET */
diff --git a/libs/cairo-1.16.0/src/cairo-types-private.h b/libs/cairo-1.16.0/src/cairo-types-private.h
new file mode 100644
index 0000000..da37303
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-types-private.h
@@ -0,0 +1,430 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_TYPES_PRIVATE_H
+#define CAIRO_TYPES_PRIVATE_H
+
+#include "cairo.h"
+#include "cairo-fixed-type-private.h"
+#include "cairo-list-private.h"
+#include "cairo-reference-count-private.h"
+
+CAIRO_BEGIN_DECLS
+
+/**
+ * SECTION:cairo-types
+ * @Title: Types
+ * @Short_Description: Generic data types
+ *
+ * This section lists generic data types used in the cairo API.
+ **/
+
+typedef struct _cairo_array cairo_array_t;
+typedef struct _cairo_backend cairo_backend_t;
+typedef struct _cairo_boxes_t cairo_boxes_t;
+typedef struct _cairo_cache cairo_cache_t;
+typedef struct _cairo_composite_rectangles cairo_composite_rectangles_t;
+typedef struct _cairo_clip cairo_clip_t;
+typedef struct _cairo_clip_path cairo_clip_path_t;
+typedef struct _cairo_color cairo_color_t;
+typedef struct _cairo_color_stop cairo_color_stop_t;
+typedef struct _cairo_contour cairo_contour_t;
+typedef struct _cairo_contour_chain cairo_contour_chain_t;
+typedef struct _cairo_contour_iter cairo_contour_iter_t;
+typedef struct _cairo_damage cairo_damage_t;
+typedef struct _cairo_device_backend cairo_device_backend_t;
+typedef struct _cairo_font_face_backend     cairo_font_face_backend_t;
+typedef struct _cairo_gstate cairo_gstate_t;
+typedef struct _cairo_gstate_backend cairo_gstate_backend_t;
+typedef struct _cairo_glyph_text_info cairo_glyph_text_info_t;
+typedef struct _cairo_hash_entry cairo_hash_entry_t;
+typedef struct _cairo_hash_table cairo_hash_table_t;
+typedef struct _cairo_image_surface cairo_image_surface_t;
+typedef struct _cairo_mime_data cairo_mime_data_t;
+typedef struct _cairo_observer cairo_observer_t;
+typedef struct _cairo_output_stream cairo_output_stream_t;
+typedef struct _cairo_paginated_surface_backend cairo_paginated_surface_backend_t;
+typedef struct _cairo_path_fixed cairo_path_fixed_t;
+typedef struct _cairo_rectangle_int16 cairo_glyph_size_t;
+typedef struct _cairo_scaled_font_subsets cairo_scaled_font_subsets_t;
+typedef struct _cairo_solid_pattern cairo_solid_pattern_t;
+typedef struct _cairo_surface_attributes cairo_surface_attributes_t;
+typedef struct _cairo_surface_backend cairo_surface_backend_t;
+typedef struct _cairo_surface_observer cairo_surface_observer_t;
+typedef struct _cairo_surface_snapshot cairo_surface_snapshot_t;
+typedef struct _cairo_surface_subsurface cairo_surface_subsurface_t;
+typedef struct _cairo_surface_wrapper cairo_surface_wrapper_t;
+typedef struct _cairo_traps cairo_traps_t;
+typedef struct _cairo_tristrip cairo_tristrip_t;
+typedef struct _cairo_unscaled_font_backend cairo_unscaled_font_backend_t;
+typedef struct _cairo_xlib_screen_info cairo_xlib_screen_info_t;
+
+typedef cairo_array_t cairo_user_data_array_t;
+
+typedef struct _cairo_scaled_font_private cairo_scaled_font_private_t;
+typedef struct _cairo_scaled_font_backend   cairo_scaled_font_backend_t;
+typedef struct _cairo_scaled_glyph cairo_scaled_glyph_t;
+typedef struct _cairo_scaled_glyph_private cairo_scaled_glyph_private_t;
+
+typedef struct cairo_compositor cairo_compositor_t;
+typedef struct cairo_fallback_compositor cairo_fallback_compositor_t;
+typedef struct cairo_mask_compositor cairo_mask_compositor_t;
+typedef struct cairo_traps_compositor cairo_traps_compositor_t;
+typedef struct cairo_spans_compositor cairo_spans_compositor_t;
+
+struct _cairo_observer {
+    cairo_list_t link;
+    void (*callback) (cairo_observer_t *self, void *arg);
+};
+
+/**
+ * _cairo_hash_entry:
+ *
+ * A #cairo_hash_entry_t contains both a key and a value for
+ * #cairo_hash_table_t. User-derived types for #cairo_hash_entry_t must
+ * be type-compatible with this structure (eg. they must have an
+ * unsigned long as the first parameter. The easiest way to get this
+ * is to use:
+ *
+ * 	typedef _my_entry {
+ *	    cairo_hash_entry_t base;
+ *	    ... Remainder of key and value fields here ..
+ *	} my_entry_t;
+ *
+ * which then allows a pointer to my_entry_t to be passed to any of
+ * the #cairo_hash_table_t functions as follows without requiring a cast:
+ *
+ *	_cairo_hash_table_insert (hash_table, &my_entry->base);
+ *
+ * IMPORTANT: The caller is responsible for initializing
+ * my_entry->base.hash with a hash code derived from the key. The
+ * essential property of the hash code is that keys_equal must never
+ * return %TRUE for two keys that have different hashes. The best hash
+ * code will reduce the frequency of two keys with the same code for
+ * which keys_equal returns %FALSE.
+ *
+ * Which parts of the entry make up the "key" and which part make up
+ * the value are entirely up to the caller, (as determined by the
+ * computation going into base.hash as well as the keys_equal
+ * function). A few of the #cairo_hash_table_t functions accept an entry
+ * which will be used exclusively as a "key", (indicated by a
+ * parameter name of key). In these cases, the value-related fields of
+ * the entry need not be initialized if so desired.
+ **/
+struct _cairo_hash_entry {
+    unsigned long hash;
+};
+
+struct _cairo_array {
+    unsigned int size;
+    unsigned int num_elements;
+    unsigned int element_size;
+    char *elements;
+};
+
+/**
+ * _cairo_lcd_filter:
+ * @CAIRO_LCD_FILTER_DEFAULT: Use the default LCD filter for
+ *   font backend and target device
+ * @CAIRO_LCD_FILTER_NONE: Do not perform LCD filtering
+ * @CAIRO_LCD_FILTER_INTRA_PIXEL: Intra-pixel filter
+ * @CAIRO_LCD_FILTER_FIR3: FIR filter with a 3x3 kernel
+ * @CAIRO_LCD_FILTER_FIR5: FIR filter with a 5x5 kernel
+ *
+ * The LCD filter specifies the low-pass filter applied to LCD-optimized
+ * bitmaps generated with an antialiasing mode of %CAIRO_ANTIALIAS_SUBPIXEL.
+ *
+ * Note: This API was temporarily made available in the public
+ * interface during the 1.7.x development series, but was made private
+ * before 1.8.
+ **/
+typedef enum _cairo_lcd_filter {
+    CAIRO_LCD_FILTER_DEFAULT,
+    CAIRO_LCD_FILTER_NONE,
+    CAIRO_LCD_FILTER_INTRA_PIXEL,
+    CAIRO_LCD_FILTER_FIR3,
+    CAIRO_LCD_FILTER_FIR5
+} cairo_lcd_filter_t;
+
+typedef enum _cairo_round_glyph_positions {
+    CAIRO_ROUND_GLYPH_POS_DEFAULT,
+    CAIRO_ROUND_GLYPH_POS_ON,
+    CAIRO_ROUND_GLYPH_POS_OFF
+} cairo_round_glyph_positions_t;
+
+struct _cairo_font_options {
+    cairo_antialias_t antialias;
+    cairo_subpixel_order_t subpixel_order;
+    cairo_lcd_filter_t lcd_filter;
+    cairo_hint_style_t hint_style;
+    cairo_hint_metrics_t hint_metrics;
+    cairo_round_glyph_positions_t round_glyph_positions;
+    char *variations;
+};
+
+struct _cairo_glyph_text_info {
+    const char *utf8;
+    int utf8_len;
+
+    const cairo_text_cluster_t *clusters;
+    int num_clusters;
+    cairo_text_cluster_flags_t cluster_flags;
+};
+
+
+/* XXX: Right now, the _cairo_color structure puts unpremultiplied
+   color in the doubles and premultiplied color in the shorts. Yes,
+   this is crazy insane, (but at least we don't export this
+   madness). I'm still working on a cleaner API, but in the meantime,
+   at least this does prevent precision loss in color when changing
+   alpha. */
+struct _cairo_color {
+    double red;
+    double green;
+    double blue;
+    double alpha;
+
+    unsigned short red_short;
+    unsigned short green_short;
+    unsigned short blue_short;
+    unsigned short alpha_short;
+};
+
+struct _cairo_color_stop {
+    /* unpremultiplied */
+    double red;
+    double green;
+    double blue;
+    double alpha;
+
+    /* unpremultipled, for convenience */
+    uint16_t red_short;
+    uint16_t green_short;
+    uint16_t blue_short;
+    uint16_t alpha_short;
+};
+
+typedef enum _cairo_paginated_mode {
+    CAIRO_PAGINATED_MODE_ANALYZE,	/* analyze page regions */
+    CAIRO_PAGINATED_MODE_RENDER,	/* render page contents */
+    CAIRO_PAGINATED_MODE_FALLBACK	/* paint fallback images */
+} cairo_paginated_mode_t;
+
+typedef enum _cairo_internal_surface_type {
+    CAIRO_INTERNAL_SURFACE_TYPE_SNAPSHOT = 0x1000,
+    CAIRO_INTERNAL_SURFACE_TYPE_PAGINATED,
+    CAIRO_INTERNAL_SURFACE_TYPE_ANALYSIS,
+    CAIRO_INTERNAL_SURFACE_TYPE_OBSERVER,
+    CAIRO_INTERNAL_SURFACE_TYPE_TEST_FALLBACK,
+    CAIRO_INTERNAL_SURFACE_TYPE_TEST_PAGINATED,
+    CAIRO_INTERNAL_SURFACE_TYPE_TEST_WRAPPING,
+    CAIRO_INTERNAL_SURFACE_TYPE_NULL,
+    CAIRO_INTERNAL_SURFACE_TYPE_TYPE3_GLYPH
+} cairo_internal_surface_type_t;
+
+typedef enum _cairo_internal_device_type {
+    CAIRO_INTERNAL_DEVICE_TYPE_OBSERVER = 0x1000,
+} cairo_device_surface_type_t;
+
+#define CAIRO_HAS_TEST_PAGINATED_SURFACE 1
+
+typedef struct _cairo_slope {
+    cairo_fixed_t dx;
+    cairo_fixed_t dy;
+} cairo_slope_t, cairo_distance_t;
+
+typedef struct _cairo_point_double {
+    double x;
+    double y;
+} cairo_point_double_t;
+
+typedef struct _cairo_circle_double {
+    cairo_point_double_t center;
+    double               radius;
+} cairo_circle_double_t;
+
+typedef struct _cairo_distance_double {
+    double dx;
+    double dy;
+} cairo_distance_double_t;
+
+typedef struct _cairo_box_double {
+    cairo_point_double_t p1;
+    cairo_point_double_t p2;
+} cairo_box_double_t;
+
+typedef struct _cairo_line {
+    cairo_point_t p1;
+    cairo_point_t p2;
+} cairo_line_t, cairo_box_t;
+
+typedef struct _cairo_trapezoid {
+    cairo_fixed_t top, bottom;
+    cairo_line_t left, right;
+} cairo_trapezoid_t;
+
+typedef struct _cairo_point_int {
+    int x, y;
+} cairo_point_int_t;
+
+#define CAIRO_RECT_INT_MIN (INT_MIN >> CAIRO_FIXED_FRAC_BITS)
+#define CAIRO_RECT_INT_MAX (INT_MAX >> CAIRO_FIXED_FRAC_BITS)
+
+typedef enum _cairo_direction {
+    CAIRO_DIRECTION_FORWARD,
+    CAIRO_DIRECTION_REVERSE
+} cairo_direction_t;
+
+typedef struct _cairo_edge {
+    cairo_line_t line;
+    int top, bottom;
+    int dir;
+} cairo_edge_t;
+
+typedef struct _cairo_polygon {
+    cairo_status_t status;
+
+    cairo_box_t extents;
+    cairo_box_t limit;
+    const cairo_box_t *limits;
+    int num_limits;
+
+    int num_edges;
+    int edges_size;
+    cairo_edge_t *edges;
+    cairo_edge_t  edges_embedded[32];
+} cairo_polygon_t;
+
+typedef cairo_warn cairo_status_t
+(*cairo_spline_add_point_func_t) (void *closure,
+				  const cairo_point_t *point,
+				  const cairo_slope_t *tangent);
+
+typedef struct _cairo_spline_knots {
+    cairo_point_t a, b, c, d;
+} cairo_spline_knots_t;
+
+typedef struct _cairo_spline {
+    cairo_spline_add_point_func_t add_point_func;
+    void *closure;
+
+    cairo_spline_knots_t knots;
+
+    cairo_slope_t initial_slope;
+    cairo_slope_t final_slope;
+
+    cairo_bool_t has_point;
+    cairo_point_t last_point;
+} cairo_spline_t;
+
+typedef struct _cairo_pen_vertex {
+    cairo_point_t point;
+
+    cairo_slope_t slope_ccw;
+    cairo_slope_t slope_cw;
+} cairo_pen_vertex_t;
+
+typedef struct _cairo_pen {
+    double radius;
+    double tolerance;
+
+    int num_vertices;
+    cairo_pen_vertex_t *vertices;
+    cairo_pen_vertex_t  vertices_embedded[32];
+} cairo_pen_t;
+
+typedef struct _cairo_stroke_style {
+    double		 line_width;
+    cairo_line_cap_t	 line_cap;
+    cairo_line_join_t	 line_join;
+    double		 miter_limit;
+    double		*dash;
+    unsigned int	 num_dashes;
+    double		 dash_offset;
+} cairo_stroke_style_t;
+
+typedef struct _cairo_format_masks {
+    int bpp;
+    unsigned long alpha_mask;
+    unsigned long red_mask;
+    unsigned long green_mask;
+    unsigned long blue_mask;
+} cairo_format_masks_t;
+
+typedef enum {
+    CAIRO_STOCK_WHITE,
+    CAIRO_STOCK_BLACK,
+    CAIRO_STOCK_TRANSPARENT,
+    CAIRO_STOCK_NUM_COLORS,
+} cairo_stock_t;
+
+typedef enum _cairo_image_transparency {
+    CAIRO_IMAGE_IS_OPAQUE,
+    CAIRO_IMAGE_HAS_BILEVEL_ALPHA,
+    CAIRO_IMAGE_HAS_ALPHA,
+    CAIRO_IMAGE_UNKNOWN
+} cairo_image_transparency_t;
+
+typedef enum _cairo_image_color {
+    CAIRO_IMAGE_IS_COLOR,
+    CAIRO_IMAGE_IS_GRAYSCALE,
+    CAIRO_IMAGE_IS_MONOCHROME,
+    CAIRO_IMAGE_UNKNOWN_COLOR
+} cairo_image_color_t;
+
+
+struct _cairo_mime_data {
+    cairo_reference_count_t ref_count;
+    unsigned char *data;
+    unsigned long length;
+    cairo_destroy_func_t destroy;
+    void *closure;
+};
+
+/*
+ * A #cairo_unscaled_font_t is just an opaque handle we use in the
+ * glyph cache.
+ */
+typedef struct _cairo_unscaled_font {
+    cairo_hash_entry_t			 hash_entry;
+    cairo_reference_count_t		 ref_count;
+    const cairo_unscaled_font_backend_t	*backend;
+} cairo_unscaled_font_t;
+CAIRO_END_DECLS
+
+#endif /* CAIRO_TYPES_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-unicode.c b/libs/cairo-1.16.0/src/cairo-unicode.c
new file mode 100644
index 0000000..966ae84
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-unicode.c
@@ -0,0 +1,447 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * The code in this file is derived from GLib's gutf8.c and
+ *   ultimately from libunicode. It is relicensed under the
+ *   dual LGPL/MPL with permission of the original authors.
+ *
+ * Copyright © 1999 Tom Tromey
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Tom Tromey.
+ *  and Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-error-private.h"
+
+#define UTF8_COMPUTE(Char, Mask, Len)					      \
+  if (Char < 128)							      \
+    {									      \
+      Len = 1;								      \
+      Mask = 0x7f;							      \
+    }									      \
+  else if ((Char & 0xe0) == 0xc0)					      \
+    {									      \
+      Len = 2;								      \
+      Mask = 0x1f;							      \
+    }									      \
+  else if ((Char & 0xf0) == 0xe0)					      \
+    {									      \
+      Len = 3;								      \
+      Mask = 0x0f;							      \
+    }									      \
+  else if ((Char & 0xf8) == 0xf0)					      \
+    {									      \
+      Len = 4;								      \
+      Mask = 0x07;							      \
+    }									      \
+  else if ((Char & 0xfc) == 0xf8)					      \
+    {									      \
+      Len = 5;								      \
+      Mask = 0x03;							      \
+    }									      \
+  else if ((Char & 0xfe) == 0xfc)					      \
+    {									      \
+      Len = 6;								      \
+      Mask = 0x01;							      \
+    }									      \
+  else									      \
+    Len = -1;
+
+#define UTF8_LENGTH(Char)              \
+  ((Char) < 0x80 ? 1 :                 \
+   ((Char) < 0x800 ? 2 :               \
+    ((Char) < 0x10000 ? 3 :            \
+     ((Char) < 0x200000 ? 4 :          \
+      ((Char) < 0x4000000 ? 5 : 6)))))
+
+#define UTF8_GET(Result, Chars, Count, Mask, Len)			      \
+  (Result) = (Chars)[0] & (Mask);					      \
+  for ((Count) = 1; (Count) < (Len); ++(Count))				      \
+    {									      \
+      if (((Chars)[(Count)] & 0xc0) != 0x80)				      \
+	{								      \
+	  (Result) = -1;						      \
+	  break;							      \
+	}								      \
+      (Result) <<= 6;							      \
+      (Result) |= ((Chars)[(Count)] & 0x3f);				      \
+    }
+
+#define UNICODE_VALID(Char)                   \
+    ((Char) < 0x110000 &&                     \
+     (((Char) & 0xFFFFF800) != 0xD800) &&     \
+     ((Char) < 0xFDD0 || (Char) > 0xFDEF) &&  \
+     ((Char) & 0xFFFE) != 0xFFFE)
+
+static const char utf8_skip_data[256] = {
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+    3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1
+};
+
+#define UTF8_NEXT_CHAR(p) ((p) + utf8_skip_data[*(unsigned char *)(p)])
+
+/* Converts a sequence of bytes encoded as UTF-8 to a Unicode character.
+ * If @p does not point to a valid UTF-8 encoded character, results are
+ * undefined.
+ **/
+static uint32_t
+_utf8_get_char (const unsigned char *p)
+{
+    int i, mask = 0, len;
+    uint32_t result;
+    unsigned char c = (unsigned char) *p;
+
+    UTF8_COMPUTE (c, mask, len);
+    if (len == -1)
+	return (uint32_t)-1;
+    UTF8_GET (result, p, i, mask, len);
+
+    return result;
+}
+
+/* Like _utf8_get_char, but take a maximum length
+ * and return (uint32_t)-2 on incomplete trailing character
+ */
+static uint32_t
+_utf8_get_char_extended (const unsigned char *p,
+			 long		      max_len)
+{
+    int i, len;
+    uint32_t wc = (unsigned char) *p;
+
+    if (wc < 0x80) {
+	return wc;
+    } else if (wc < 0xc0) {
+	return (uint32_t)-1;
+    } else if (wc < 0xe0) {
+	len = 2;
+	wc &= 0x1f;
+    } else if (wc < 0xf0) {
+	len = 3;
+	wc &= 0x0f;
+    } else if (wc < 0xf8) {
+	len = 4;
+	wc &= 0x07;
+    } else if (wc < 0xfc) {
+	len = 5;
+	wc &= 0x03;
+    } else if (wc < 0xfe) {
+	len = 6;
+	wc &= 0x01;
+    } else {
+	return (uint32_t)-1;
+    }
+
+    if (max_len >= 0 && len > max_len) {
+	for (i = 1; i < max_len; i++) {
+	    if ((((unsigned char *)p)[i] & 0xc0) != 0x80)
+		return (uint32_t)-1;
+	}
+	return (uint32_t)-2;
+    }
+
+    for (i = 1; i < len; ++i) {
+	uint32_t ch = ((unsigned char *)p)[i];
+
+	if ((ch & 0xc0) != 0x80) {
+	    if (ch)
+		return (uint32_t)-1;
+	    else
+		return (uint32_t)-2;
+	}
+
+	wc <<= 6;
+	wc |= (ch & 0x3f);
+    }
+
+    if (UTF8_LENGTH(wc) != len)
+	return (uint32_t)-1;
+
+    return wc;
+}
+
+/**
+ * _cairo_utf8_get_char_validated:
+ * @p: a UTF-8 string
+ * @unicode: location to store one Unicode character
+ *
+ * Decodes the first character of a valid UTF-8 string, and returns
+ * the number of bytes consumed.
+ *
+ * Note that the string should be valid.  Do not use this without
+ * validating the string first.
+ *
+ * Returns: the number of bytes forming the character returned.
+ **/
+int
+_cairo_utf8_get_char_validated (const char *p,
+				uint32_t   *unicode)
+{
+    int i, mask = 0, len;
+    uint32_t result;
+    unsigned char c = (unsigned char) *p;
+
+    UTF8_COMPUTE (c, mask, len);
+    if (len == -1) {
+	if (unicode)
+	    *unicode = (uint32_t)-1;
+	return 1;
+    }
+    UTF8_GET (result, p, i, mask, len);
+
+    if (unicode)
+	*unicode = result;
+    return len;
+}
+
+/**
+ * _cairo_utf8_to_ucs4:
+ * @str: an UTF-8 string
+ * @len: length of @str in bytes, or -1 if it is nul-terminated.
+ *   If @len is supplied and the string has an embedded nul
+ *   byte, only the portion before the nul byte is converted.
+ * @result: location to store a pointer to a newly allocated UTF-32
+ *   string (always native endian), or %NULL. Free with free(). A 0
+ *   word will be written after the last character.
+ * @items_written: location to store number of 32-bit words
+ *   written. (Not including the trailing 0)
+ *
+ * Converts a UTF-8 string to UCS-4. UCS-4 is an encoding of Unicode
+ * with 1 32-bit word per character. The string is validated to
+ * consist entirely of valid Unicode characters.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the entire string was
+ *   successfully converted. %CAIRO_STATUS_INVALID_STRING if an
+ *   invalid sequence was found.
+ **/
+cairo_status_t
+_cairo_utf8_to_ucs4 (const char *str,
+		     int	 len,
+		     uint32_t  **result,
+		     int	*items_written)
+{
+    uint32_t *str32 = NULL;
+    int n_chars, i;
+    const unsigned char *in;
+    const unsigned char * const ustr = (const unsigned char *) str;
+
+    in = ustr;
+    n_chars = 0;
+    while ((len < 0 || ustr + len - in > 0) && *in)
+    {
+	uint32_t wc = _utf8_get_char_extended (in, ustr + len - in);
+	if (wc & 0x80000000 || !UNICODE_VALID (wc))
+	    return _cairo_error (CAIRO_STATUS_INVALID_STRING);
+
+	n_chars++;
+	if (n_chars == INT_MAX)
+	    return _cairo_error (CAIRO_STATUS_INVALID_STRING);
+
+	in = UTF8_NEXT_CHAR (in);
+    }
+
+    if (result) {
+	str32 = _cairo_malloc_ab (n_chars + 1, sizeof (uint32_t));
+	if (!str32)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	in = ustr;
+	for (i=0; i < n_chars; i++) {
+	    str32[i] = _utf8_get_char (in);
+	    in = UTF8_NEXT_CHAR (in);
+	}
+	str32[i] = 0;
+
+	*result = str32;
+    }
+
+    if (items_written)
+	*items_written = n_chars;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * _cairo_ucs4_to_utf8:
+ * @unicode: a UCS-4 character
+ * @utf8: buffer to write utf8 string into. Must have at least 4 bytes
+ * space available. Or %NULL.
+ *
+ * This space left intentionally blank.
+ *
+ * Return value: Number of bytes in the utf8 string or 0 if an invalid
+ * unicode character
+ **/
+int
+_cairo_ucs4_to_utf8 (uint32_t  unicode,
+		     char     *utf8)
+{
+    int bytes;
+    char *p;
+
+    if (unicode < 0x80) {
+	if (utf8)
+	    *utf8 = unicode;
+	return 1;
+    } else if (unicode < 0x800) {
+	bytes = 2;
+    } else if (unicode < 0x10000) {
+	bytes = 3;
+    } else if (unicode < 0x200000) {
+	bytes = 4;
+    } else {
+	return 0;
+    }
+
+    if (!utf8)
+	return bytes;
+
+    p = utf8 + bytes;
+    while (p > utf8) {
+	*--p = 0x80 | (unicode & 0x3f);
+	unicode >>= 6;
+    }
+    *p |= 0xf0 << (4 - bytes);
+
+    return bytes;
+}
+
+/**
+ * _cairo_ucs4_to_utf16:
+ * @unicode: a UCS-4 character
+ * @utf16: buffer to write utf16 string into. Must have at least 2
+ * elements. Or %NULL.
+ *
+ * This space left intentionally blank.
+ *
+ * Return value: Number of elements in the utf16 string or 0 if an
+ * invalid unicode character
+ **/
+int
+_cairo_ucs4_to_utf16 (uint32_t  unicode,
+		      uint16_t *utf16)
+{
+    if (unicode < 0x10000) {
+	if (utf16)
+	    utf16[0] = unicode;
+	return 1;
+    } else if (unicode < 0x110000) {
+	if (utf16) {
+	    utf16[0] = (unicode - 0x10000) / 0x400 + 0xd800;
+	    utf16[1] = (unicode - 0x10000) % 0x400 + 0xdc00;
+	}
+	return 2;
+    } else {
+	return 0;
+    }
+}
+
+#if CAIRO_HAS_UTF8_TO_UTF16
+/**
+ * _cairo_utf8_to_utf16:
+ * @str: an UTF-8 string
+ * @len: length of @str in bytes, or -1 if it is nul-terminated.
+ *   If @len is supplied and the string has an embedded nul
+ *   byte, only the portion before the nul byte is converted.
+ * @result: location to store a pointer to a newly allocated UTF-16
+ *   string (always native endian). Free with free(). A 0
+ *   word will be written after the last character.
+ * @items_written: location to store number of 16-bit words
+ *   written. (Not including the trailing 0)
+ *
+ * Converts a UTF-8 string to UTF-16. UTF-16 is an encoding of Unicode
+ * where characters are represented either as a single 16-bit word, or
+ * as a pair of 16-bit "surrogates". The string is validated to
+ * consist entirely of valid Unicode characters.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the entire string was
+ *   successfully converted. %CAIRO_STATUS_INVALID_STRING if an
+ *   an invalid sequence was found.
+ **/
+cairo_status_t
+_cairo_utf8_to_utf16 (const char *str,
+		      int	  len,
+		      uint16_t **result,
+		      int	*items_written)
+{
+    uint16_t *str16 = NULL;
+    int n16, i;
+    const unsigned char *in;
+    const unsigned char * const ustr = (const unsigned char *) str;
+
+    in = ustr;
+    n16 = 0;
+    while ((len < 0 || ustr + len - in > 0) && *in) {
+	uint32_t wc = _utf8_get_char_extended (in, ustr + len - in);
+	if (wc & 0x80000000 || !UNICODE_VALID (wc))
+	    return _cairo_error (CAIRO_STATUS_INVALID_STRING);
+
+	if (wc < 0x10000)
+	    n16 += 1;
+	else
+	    n16 += 2;
+
+	if (n16 == INT_MAX - 1 || n16 == INT_MAX)
+	    return _cairo_error (CAIRO_STATUS_INVALID_STRING);
+
+	in = UTF8_NEXT_CHAR (in);
+    }
+
+    str16 = _cairo_malloc_ab (n16 + 1, sizeof (uint16_t));
+    if (!str16)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    in = ustr;
+    for (i = 0; i < n16;) {
+	uint32_t wc = _utf8_get_char (in);
+
+	i += _cairo_ucs4_to_utf16 (wc, str16 + i);
+
+	in = UTF8_NEXT_CHAR (in);
+    }
+
+    str16[i] = 0;
+
+    *result = str16;
+    if (items_written)
+	*items_written = n16;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-uninstalled.pc.in b/libs/cairo-1.16.0/src/cairo-uninstalled.pc.in
new file mode 100644
index 0000000..9dc3231
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-uninstalled.pc.in
@@ -0,0 +1,8 @@
+Name: cairo
+Description: Multi-platform 2D graphics library
+Version: @VERSION@
+
+@PKGCONFIG_REQUIRES@: @CAIRO_REQUIRES@
+Libs: ${pc_top_builddir}/${pcfiledir}/src/libcairo.la
+Libs.private: @CAIRO_NONPKGCONFIG_LIBS@
+Cflags: -I${pc_top_builddir}/${pcfiledir}/@srcdir@/src
diff --git a/libs/cairo-1.16.0/src/cairo-user-font-private.h b/libs/cairo-1.16.0/src/cairo-user-font-private.h
new file mode 100644
index 0000000..d54ef78
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-user-font-private.h
@@ -0,0 +1,46 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006, 2008 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Kristian Høgsberg <krh@redhat.com>
+ *      Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#ifndef CAIRO_USER_FONT_PRIVATE_H
+#define CAIRO_USER_FONT_PRIVATE_H
+
+#include "cairo.h"
+#include "cairo-compiler-private.h"
+
+cairo_private cairo_bool_t
+_cairo_font_face_is_user (cairo_font_face_t *font_face);
+
+#endif /* CAIRO_USER_FONT_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-user-font.c b/libs/cairo-1.16.0/src/cairo-user-font.c
new file mode 100644
index 0000000..a26fb57
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-user-font.c
@@ -0,0 +1,831 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2006, 2008 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *      Kristian Høgsberg <krh@redhat.com>
+ *      Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#include "cairoint.h"
+#include "cairo-user-font-private.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-analysis-surface-private.h"
+#include "cairo-error-private.h"
+
+/**
+ * SECTION:cairo-user-fonts
+ * @Title:User Fonts
+ * @Short_Description: Font support with font data provided by the user
+ * 
+ * The user-font feature allows the cairo user to provide drawings for glyphs
+ * in a font.  This is most useful in implementing fonts in non-standard
+ * formats, like SVG fonts and Flash fonts, but can also be used by games and
+ * other application to draw "funky" fonts.
+ **/
+
+/**
+ * CAIRO_HAS_USER_FONT:
+ *
+ * Defined if the user font backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ * The user font backend is always built in versions of cairo that support
+ * this feature (1.8 and later).
+ *
+ * Since: 1.8
+ **/
+
+typedef struct _cairo_user_scaled_font_methods {
+    cairo_user_scaled_font_init_func_t			init;
+    cairo_user_scaled_font_render_glyph_func_t		render_glyph;
+    cairo_user_scaled_font_unicode_to_glyph_func_t	unicode_to_glyph;
+    cairo_user_scaled_font_text_to_glyphs_func_t	text_to_glyphs;
+} cairo_user_scaled_font_methods_t;
+
+typedef struct _cairo_user_font_face {
+    cairo_font_face_t	             base;
+
+    /* Set to true after first scaled font is created.  At that point,
+     * the scaled_font_methods cannot change anymore. */
+    cairo_bool_t		     immutable;
+
+    cairo_user_scaled_font_methods_t scaled_font_methods;
+} cairo_user_font_face_t;
+
+typedef struct _cairo_user_scaled_font {
+    cairo_scaled_font_t  base;
+
+    cairo_text_extents_t default_glyph_extents;
+
+    /* space to compute extents in, and factors to convert back to user space */
+    cairo_matrix_t extent_scale;
+    double extent_x_scale;
+    double extent_y_scale;
+
+    /* multiplier for metrics hinting */
+    double snap_x_scale;
+    double snap_y_scale;
+
+} cairo_user_scaled_font_t;
+
+/* #cairo_user_scaled_font_t */
+
+static cairo_surface_t *
+_cairo_user_scaled_font_create_recording_surface (const cairo_user_scaled_font_t *scaled_font)
+{
+    cairo_content_t content;
+
+    content = scaled_font->base.options.antialias == CAIRO_ANTIALIAS_SUBPIXEL ?
+						     CAIRO_CONTENT_COLOR_ALPHA :
+						     CAIRO_CONTENT_ALPHA;
+
+    return cairo_recording_surface_create (content, NULL);
+}
+
+
+static cairo_t *
+_cairo_user_scaled_font_create_recording_context (const cairo_user_scaled_font_t *scaled_font,
+						  cairo_surface_t                *recording_surface)
+{
+    cairo_t *cr;
+
+    cr = cairo_create (recording_surface);
+
+    if (!_cairo_matrix_is_scale_0 (&scaled_font->base.scale)) {
+        cairo_matrix_t scale;
+	scale = scaled_font->base.scale;
+	scale.x0 = scale.y0 = 0.;
+	cairo_set_matrix (cr, &scale);
+    }
+
+    cairo_set_font_size (cr, 1.0);
+    cairo_set_font_options (cr, &scaled_font->base.options);
+    cairo_set_source_rgb (cr, 1., 1., 1.);
+
+    return cr;
+}
+
+static cairo_int_status_t
+_cairo_user_scaled_glyph_init (void			 *abstract_font,
+			       cairo_scaled_glyph_t	 *scaled_glyph,
+			       cairo_scaled_glyph_info_t  info)
+{
+    cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_user_scaled_font_t *scaled_font = abstract_font;
+    cairo_surface_t *recording_surface = scaled_glyph->recording_surface;
+
+    if (!scaled_glyph->recording_surface) {
+	cairo_user_font_face_t *face =
+	    (cairo_user_font_face_t *) scaled_font->base.font_face;
+	cairo_text_extents_t extents = scaled_font->default_glyph_extents;
+	cairo_t *cr;
+
+	if (!face->scaled_font_methods.render_glyph)
+	    return CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED;
+
+	recording_surface = _cairo_user_scaled_font_create_recording_surface (scaled_font);
+
+	/* special case for 0 rank matrix (as in _cairo_scaled_font_init): empty surface */
+        if (!_cairo_matrix_is_scale_0 (&scaled_font->base.scale)) {
+	    cr = _cairo_user_scaled_font_create_recording_context (scaled_font, recording_surface);
+	    status = face->scaled_font_methods.render_glyph ((cairo_scaled_font_t *)scaled_font,
+							     _cairo_scaled_glyph_index(scaled_glyph),
+							     cr, &extents);
+	    if (status == CAIRO_INT_STATUS_SUCCESS)
+	        status = cairo_status (cr);
+
+	    cairo_destroy (cr);
+
+	    if (unlikely (status)) {
+	        cairo_surface_destroy (recording_surface);
+	        return status;
+	    }
+	}
+
+	_cairo_scaled_glyph_set_recording_surface (scaled_glyph,
+						   &scaled_font->base,
+						   recording_surface);
+
+
+	/* set metrics */
+
+	if (extents.width == 0.) {
+	    cairo_box_t bbox;
+	    double x1, y1, x2, y2;
+	    double x_scale, y_scale;
+
+	    /* Compute extents.x/y/width/height from recording_surface,
+	     * in font space.
+	     */
+	    status = _cairo_recording_surface_get_bbox ((cairo_recording_surface_t *) recording_surface,
+							&bbox,
+							&scaled_font->extent_scale);
+	    if (unlikely (status))
+		return status;
+
+	    _cairo_box_to_doubles (&bbox, &x1, &y1, &x2, &y2);
+
+	    x_scale = scaled_font->extent_x_scale;
+	    y_scale = scaled_font->extent_y_scale;
+	    extents.x_bearing = x1 * x_scale;
+	    extents.y_bearing = y1 * y_scale;
+	    extents.width     = (x2 - x1) * x_scale;
+	    extents.height    = (y2 - y1) * y_scale;
+	}
+
+	if (scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF) {
+	    extents.x_advance = _cairo_lround (extents.x_advance / scaled_font->snap_x_scale) * scaled_font->snap_x_scale;
+	    extents.y_advance = _cairo_lround (extents.y_advance / scaled_font->snap_y_scale) * scaled_font->snap_y_scale;
+	}
+
+	_cairo_scaled_glyph_set_metrics (scaled_glyph,
+					 &scaled_font->base,
+					 &extents);
+    }
+
+    if (info & CAIRO_SCALED_GLYPH_INFO_SURFACE) {
+	cairo_surface_t	*surface;
+	cairo_format_t format;
+	int width, height;
+
+	/* TODO
+	 * extend the glyph cache to support argb glyphs.
+	 * need to figure out the semantics and interaction with subpixel
+	 * rendering first.
+	 */
+
+	width = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x) -
+	  _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x);
+	height = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y) -
+	  _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y);
+
+	switch (scaled_font->base.options.antialias) {
+	default:
+	case CAIRO_ANTIALIAS_DEFAULT:
+	case CAIRO_ANTIALIAS_FAST:
+	case CAIRO_ANTIALIAS_GOOD:
+	case CAIRO_ANTIALIAS_GRAY:	format = CAIRO_FORMAT_A8;	break;
+	case CAIRO_ANTIALIAS_NONE:	format = CAIRO_FORMAT_A1;	break;
+	case CAIRO_ANTIALIAS_BEST:
+	case CAIRO_ANTIALIAS_SUBPIXEL:	format = CAIRO_FORMAT_ARGB32;	break;
+	}
+	surface = cairo_image_surface_create (format, width, height);
+
+	cairo_surface_set_device_offset (surface,
+	                                 - _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x),
+	                                 - _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y));
+	status = _cairo_recording_surface_replay (recording_surface, surface);
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy(surface);
+	    return status;
+	}
+
+	_cairo_scaled_glyph_set_surface (scaled_glyph,
+					 &scaled_font->base,
+					 (cairo_image_surface_t *) surface);
+    }
+
+    if (info & CAIRO_SCALED_GLYPH_INFO_PATH) {
+	cairo_path_fixed_t *path = _cairo_path_fixed_create ();
+	if (!path)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	status = _cairo_recording_surface_get_path (recording_surface, path);
+	if (unlikely (status)) {
+	    _cairo_path_fixed_destroy (path);
+	    return status;
+	}
+
+	_cairo_scaled_glyph_set_path (scaled_glyph,
+				      &scaled_font->base,
+				      path);
+    }
+
+    return status;
+}
+
+static unsigned long
+_cairo_user_ucs4_to_index (void	    *abstract_font,
+			   uint32_t  ucs4)
+{
+    cairo_user_scaled_font_t *scaled_font = abstract_font;
+    cairo_user_font_face_t *face =
+	(cairo_user_font_face_t *) scaled_font->base.font_face;
+    unsigned long glyph = 0;
+
+    if (face->scaled_font_methods.unicode_to_glyph) {
+	cairo_status_t status;
+
+	status = face->scaled_font_methods.unicode_to_glyph (&scaled_font->base,
+							     ucs4, &glyph);
+
+	if (status == CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED)
+	    goto not_implemented;
+
+	if (status != CAIRO_STATUS_SUCCESS) {
+	    status = _cairo_scaled_font_set_error (&scaled_font->base, status);
+	    glyph = 0;
+	}
+
+    } else {
+not_implemented:
+	glyph = ucs4;
+    }
+
+    return glyph;
+}
+
+static cairo_int_status_t
+_cairo_user_text_to_glyphs (void		      *abstract_font,
+			    double		       x,
+			    double		       y,
+			    const char		      *utf8,
+			    int			       utf8_len,
+			    cairo_glyph_t	     **glyphs,
+			    int			       *num_glyphs,
+			    cairo_text_cluster_t      **clusters,
+			    int			       *num_clusters,
+			    cairo_text_cluster_flags_t *cluster_flags)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_user_scaled_font_t *scaled_font = abstract_font;
+    cairo_user_font_face_t *face =
+	(cairo_user_font_face_t *) scaled_font->base.font_face;
+
+    if (face->scaled_font_methods.text_to_glyphs) {
+	int i;
+	cairo_glyph_t *orig_glyphs = *glyphs;
+	int orig_num_glyphs = *num_glyphs;
+
+	status = face->scaled_font_methods.text_to_glyphs (&scaled_font->base,
+							   utf8, utf8_len,
+							   glyphs, num_glyphs,
+							   clusters, num_clusters, cluster_flags);
+
+	if (status != CAIRO_INT_STATUS_SUCCESS &&
+	    status != CAIRO_INT_STATUS_USER_FONT_NOT_IMPLEMENTED)
+	    return status;
+
+	if (status == CAIRO_INT_STATUS_USER_FONT_NOT_IMPLEMENTED ||
+	    *num_glyphs < 0) {
+	    if (orig_glyphs != *glyphs) {
+		cairo_glyph_free (*glyphs);
+		*glyphs = orig_glyphs;
+	    }
+	    *num_glyphs = orig_num_glyphs;
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	}
+
+	/* Convert from font space to user space and add x,y */
+	for (i = 0; i < *num_glyphs; i++) {
+	    double gx = (*glyphs)[i].x;
+	    double gy = (*glyphs)[i].y;
+
+	    cairo_matrix_transform_point (&scaled_font->base.font_matrix,
+					  &gx, &gy);
+
+	    (*glyphs)[i].x = gx + x;
+	    (*glyphs)[i].y = gy + y;
+	}
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_user_font_face_scaled_font_create (void                        *abstract_face,
+					  const cairo_matrix_t        *font_matrix,
+					  const cairo_matrix_t        *ctm,
+					  const cairo_font_options_t  *options,
+					  cairo_scaled_font_t        **scaled_font);
+
+static cairo_status_t
+_cairo_user_font_face_create_for_toy (cairo_toy_font_face_t   *toy_face,
+				      cairo_font_face_t      **font_face)
+{
+    return _cairo_font_face_twin_create_for_toy (toy_face, font_face);
+}
+
+static const cairo_scaled_font_backend_t _cairo_user_scaled_font_backend = {
+    CAIRO_FONT_TYPE_USER,
+    NULL,	/* scaled_font_fini */
+    _cairo_user_scaled_glyph_init,
+    _cairo_user_text_to_glyphs,
+    _cairo_user_ucs4_to_index,
+    NULL,	/* show_glyphs */
+    NULL,	/* load_truetype_table */
+    NULL	/* index_to_ucs4 */
+};
+
+/* #cairo_user_font_face_t */
+
+static cairo_status_t
+_cairo_user_font_face_scaled_font_create (void                        *abstract_face,
+					  const cairo_matrix_t        *font_matrix,
+					  const cairo_matrix_t        *ctm,
+					  const cairo_font_options_t  *options,
+					  cairo_scaled_font_t        **scaled_font)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_user_font_face_t *font_face = abstract_face;
+    cairo_user_scaled_font_t *user_scaled_font = NULL;
+    cairo_font_extents_t font_extents = {1., 0., 1., 1., 0.};
+
+    font_face->immutable = TRUE;
+
+    user_scaled_font = _cairo_malloc (sizeof (cairo_user_scaled_font_t));
+    if (unlikely (user_scaled_font == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = _cairo_scaled_font_init (&user_scaled_font->base,
+				      &font_face->base,
+				      font_matrix, ctm, options,
+				      &_cairo_user_scaled_font_backend);
+
+    if (unlikely (status)) {
+	free (user_scaled_font);
+	return status;
+    }
+
+    /* XXX metrics hinting? */
+
+    /* compute a normalized version of font scale matrix to compute
+     * extents in.  This is to minimize error caused by the cairo_fixed_t
+     * representation. */
+    {
+	double fixed_scale, x_scale, y_scale;
+
+	user_scaled_font->extent_scale = user_scaled_font->base.scale_inverse;
+	status = _cairo_matrix_compute_basis_scale_factors (&user_scaled_font->extent_scale,
+						      &x_scale, &y_scale,
+						      1);
+	if (status == CAIRO_STATUS_SUCCESS) {
+
+	    if (x_scale == 0) x_scale = 1.;
+	    if (y_scale == 0) y_scale = 1.;
+
+	    user_scaled_font->snap_x_scale = x_scale;
+	    user_scaled_font->snap_y_scale = y_scale;
+
+	    /* since glyphs are pretty much 1.0x1.0, we can reduce error by
+	     * scaling to a larger square.  say, 1024.x1024. */
+	    fixed_scale = 1024.;
+	    x_scale /= fixed_scale;
+	    y_scale /= fixed_scale;
+
+	    cairo_matrix_scale (&user_scaled_font->extent_scale, 1. / x_scale, 1. / y_scale);
+
+	    user_scaled_font->extent_x_scale = x_scale;
+	    user_scaled_font->extent_y_scale = y_scale;
+	}
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS &&
+	font_face->scaled_font_methods.init != NULL)
+    {
+	/* Lock the scaled_font mutex such that user doesn't accidentally try
+         * to use it just yet. */
+	CAIRO_MUTEX_LOCK (user_scaled_font->base.mutex);
+
+	/* Give away fontmap lock such that user-font can use other fonts */
+	status = _cairo_scaled_font_register_placeholder_and_unlock_font_map (&user_scaled_font->base);
+	if (status == CAIRO_STATUS_SUCCESS) {
+	    cairo_surface_t *recording_surface;
+	    cairo_t *cr;
+
+	    recording_surface = _cairo_user_scaled_font_create_recording_surface (user_scaled_font);
+	    cr = _cairo_user_scaled_font_create_recording_context (user_scaled_font, recording_surface);
+	    cairo_surface_destroy (recording_surface);
+
+	    status = font_face->scaled_font_methods.init (&user_scaled_font->base,
+							  cr,
+							  &font_extents);
+
+	    if (status == CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED)
+		status = CAIRO_STATUS_SUCCESS;
+
+	    if (status == CAIRO_STATUS_SUCCESS)
+		status = cairo_status (cr);
+
+	    cairo_destroy (cr);
+
+	    _cairo_scaled_font_unregister_placeholder_and_lock_font_map (&user_scaled_font->base);
+	}
+
+	CAIRO_MUTEX_UNLOCK (user_scaled_font->base.mutex);
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = _cairo_scaled_font_set_metrics (&user_scaled_font->base, &font_extents);
+
+    if (status != CAIRO_STATUS_SUCCESS) {
+        _cairo_scaled_font_fini (&user_scaled_font->base);
+	free (user_scaled_font);
+    } else {
+        user_scaled_font->default_glyph_extents.x_bearing = 0.;
+        user_scaled_font->default_glyph_extents.y_bearing = -font_extents.ascent;
+        user_scaled_font->default_glyph_extents.width = 0.;
+        user_scaled_font->default_glyph_extents.height = font_extents.ascent + font_extents.descent;
+        user_scaled_font->default_glyph_extents.x_advance = font_extents.max_x_advance;
+        user_scaled_font->default_glyph_extents.y_advance = 0.;
+
+	*scaled_font = &user_scaled_font->base;
+    }
+
+    return status;
+}
+
+const cairo_font_face_backend_t _cairo_user_font_face_backend = {
+    CAIRO_FONT_TYPE_USER,
+    _cairo_user_font_face_create_for_toy,
+    _cairo_font_face_destroy,
+    _cairo_user_font_face_scaled_font_create
+};
+
+
+cairo_bool_t
+_cairo_font_face_is_user (cairo_font_face_t *font_face)
+{
+    return font_face->backend == &_cairo_user_font_face_backend;
+}
+
+/* Implement the public interface */
+
+/**
+ * cairo_user_font_face_create:
+ *
+ * Creates a new user font-face.
+ *
+ * Use the setter functions to associate callbacks with the returned
+ * user font.  The only mandatory callback is render_glyph.
+ *
+ * After the font-face is created, the user can attach arbitrary data
+ * (the actual font data) to it using cairo_font_face_set_user_data()
+ * and access it from the user-font callbacks by using
+ * cairo_scaled_font_get_font_face() followed by
+ * cairo_font_face_get_user_data().
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.8
+ **/
+cairo_font_face_t *
+cairo_user_font_face_create (void)
+{
+    cairo_user_font_face_t *font_face;
+
+    font_face = _cairo_malloc (sizeof (cairo_user_font_face_t));
+    if (!font_face) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+    }
+
+    _cairo_font_face_init (&font_face->base, &_cairo_user_font_face_backend);
+
+    font_face->immutable = FALSE;
+    memset (&font_face->scaled_font_methods, 0, sizeof (font_face->scaled_font_methods));
+
+    return &font_face->base;
+}
+slim_hidden_def(cairo_user_font_face_create);
+
+/* User-font method setters */
+
+
+/**
+ * cairo_user_font_face_set_init_func:
+ * @font_face: A user font face
+ * @init_func: The init callback, or %NULL
+ *
+ * Sets the scaled-font initialization function of a user-font.
+ * See #cairo_user_scaled_font_init_func_t for details of how the callback
+ * works.
+ *
+ * The font-face should not be immutable or a %CAIRO_STATUS_USER_FONT_IMMUTABLE
+ * error will occur.  A user font-face is immutable as soon as a scaled-font
+ * is created from it.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_user_font_face_set_init_func (cairo_font_face_t                  *font_face,
+				    cairo_user_scaled_font_init_func_t  init_func)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    if (user_font_face->immutable) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_USER_FONT_IMMUTABLE))
+	    return;
+    }
+    user_font_face->scaled_font_methods.init = init_func;
+}
+slim_hidden_def(cairo_user_font_face_set_init_func);
+
+/**
+ * cairo_user_font_face_set_render_glyph_func:
+ * @font_face: A user font face
+ * @render_glyph_func: The render_glyph callback, or %NULL
+ *
+ * Sets the glyph rendering function of a user-font.
+ * See #cairo_user_scaled_font_render_glyph_func_t for details of how the callback
+ * works.
+ *
+ * The font-face should not be immutable or a %CAIRO_STATUS_USER_FONT_IMMUTABLE
+ * error will occur.  A user font-face is immutable as soon as a scaled-font
+ * is created from it.
+ *
+ * The render_glyph callback is the only mandatory callback of a user-font.
+ * If the callback is %NULL and a glyph is tried to be rendered using
+ * @font_face, a %CAIRO_STATUS_USER_FONT_ERROR will occur.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_user_font_face_set_render_glyph_func (cairo_font_face_t                          *font_face,
+					    cairo_user_scaled_font_render_glyph_func_t  render_glyph_func)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    if (user_font_face->immutable) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_USER_FONT_IMMUTABLE))
+	    return;
+    }
+    user_font_face->scaled_font_methods.render_glyph = render_glyph_func;
+}
+slim_hidden_def(cairo_user_font_face_set_render_glyph_func);
+
+/**
+ * cairo_user_font_face_set_text_to_glyphs_func:
+ * @font_face: A user font face
+ * @text_to_glyphs_func: The text_to_glyphs callback, or %NULL
+ *
+ * Sets th text-to-glyphs conversion function of a user-font.
+ * See #cairo_user_scaled_font_text_to_glyphs_func_t for details of how the callback
+ * works.
+ *
+ * The font-face should not be immutable or a %CAIRO_STATUS_USER_FONT_IMMUTABLE
+ * error will occur.  A user font-face is immutable as soon as a scaled-font
+ * is created from it.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_user_font_face_set_text_to_glyphs_func (cairo_font_face_t                            *font_face,
+					      cairo_user_scaled_font_text_to_glyphs_func_t  text_to_glyphs_func)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    if (user_font_face->immutable) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_USER_FONT_IMMUTABLE))
+	    return;
+    }
+    user_font_face->scaled_font_methods.text_to_glyphs = text_to_glyphs_func;
+}
+
+/**
+ * cairo_user_font_face_set_unicode_to_glyph_func:
+ * @font_face: A user font face
+ * @unicode_to_glyph_func: The unicode_to_glyph callback, or %NULL
+ *
+ * Sets the unicode-to-glyph conversion function of a user-font.
+ * See #cairo_user_scaled_font_unicode_to_glyph_func_t for details of how the callback
+ * works.
+ *
+ * The font-face should not be immutable or a %CAIRO_STATUS_USER_FONT_IMMUTABLE
+ * error will occur.  A user font-face is immutable as soon as a scaled-font
+ * is created from it.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_user_font_face_set_unicode_to_glyph_func (cairo_font_face_t                              *font_face,
+						cairo_user_scaled_font_unicode_to_glyph_func_t  unicode_to_glyph_func)
+{
+    cairo_user_font_face_t *user_font_face;
+    if (font_face->status)
+	return;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    if (user_font_face->immutable) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_USER_FONT_IMMUTABLE))
+	    return;
+    }
+    user_font_face->scaled_font_methods.unicode_to_glyph = unicode_to_glyph_func;
+}
+slim_hidden_def(cairo_user_font_face_set_unicode_to_glyph_func);
+
+/* User-font method getters */
+
+/**
+ * cairo_user_font_face_get_init_func:
+ * @font_face: A user font face
+ *
+ * Gets the scaled-font initialization function of a user-font.
+ *
+ * Return value: The init callback of @font_face
+ * or %NULL if none set or an error has occurred.
+ *
+ * Since: 1.8
+ **/
+cairo_user_scaled_font_init_func_t
+cairo_user_font_face_get_init_func (cairo_font_face_t *font_face)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return NULL;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return NULL;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    return user_font_face->scaled_font_methods.init;
+}
+
+/**
+ * cairo_user_font_face_get_render_glyph_func:
+ * @font_face: A user font face
+ *
+ * Gets the glyph rendering function of a user-font.
+ *
+ * Return value: The render_glyph callback of @font_face
+ * or %NULL if none set or an error has occurred.
+ *
+ * Since: 1.8
+ **/
+cairo_user_scaled_font_render_glyph_func_t
+cairo_user_font_face_get_render_glyph_func (cairo_font_face_t *font_face)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return NULL;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return NULL;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    return user_font_face->scaled_font_methods.render_glyph;
+}
+
+/**
+ * cairo_user_font_face_get_text_to_glyphs_func:
+ * @font_face: A user font face
+ *
+ * Gets the text-to-glyphs conversion function of a user-font.
+ *
+ * Return value: The text_to_glyphs callback of @font_face
+ * or %NULL if none set or an error occurred.
+ *
+ * Since: 1.8
+ **/
+cairo_user_scaled_font_text_to_glyphs_func_t
+cairo_user_font_face_get_text_to_glyphs_func (cairo_font_face_t *font_face)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return NULL;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return NULL;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    return user_font_face->scaled_font_methods.text_to_glyphs;
+}
+
+/**
+ * cairo_user_font_face_get_unicode_to_glyph_func:
+ * @font_face: A user font face
+ *
+ * Gets the unicode-to-glyph conversion function of a user-font.
+ *
+ * Return value: The unicode_to_glyph callback of @font_face
+ * or %NULL if none set or an error occurred.
+ *
+ * Since: 1.8
+ **/
+cairo_user_scaled_font_unicode_to_glyph_func_t
+cairo_user_font_face_get_unicode_to_glyph_func (cairo_font_face_t *font_face)
+{
+    cairo_user_font_face_t *user_font_face;
+
+    if (font_face->status)
+	return NULL;
+
+    if (! _cairo_font_face_is_user (font_face)) {
+	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
+	    return NULL;
+    }
+
+    user_font_face = (cairo_user_font_face_t *) font_face;
+    return user_font_face->scaled_font_methods.unicode_to_glyph;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-version.c b/libs/cairo-1.16.0/src/cairo-version.c
new file mode 100644
index 0000000..65ae2b1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-version.c
@@ -0,0 +1,261 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#define CAIRO_VERSION_H 1
+
+#include "cairoint.h"
+
+/* get the "real" version info instead of dummy cairo-version.h */
+#undef CAIRO_VERSION_H
+#include "../cairo-version.h"
+
+/**
+ * SECTION:cairo-version
+ * @Title: Version Information
+ * @Short_Description: Compile-time and run-time version checks.
+ *
+ * Cairo has a three-part version number scheme. In this scheme, we use
+ * even vs. odd numbers to distinguish fixed points in the software
+ * vs. in-progress development, (such as from git instead of a tar file,
+ * or as a "snapshot" tar file as opposed to a "release" tar file).
+ *
+ * <informalexample><screen>
+ *  _____ Major. Always 1, until we invent a new scheme.
+ * /  ___ Minor. Even/Odd = Release/Snapshot (tar files) or Branch/Head (git)
+ * | /  _ Micro. Even/Odd = Tar-file/git
+ * | | /
+ * 1.0.0
+ * </screen></informalexample>
+ *
+ * Here are a few examples of versions that one might see.
+ * <informalexample><screen>
+ * Releases
+ * --------
+ * 1.0.0 - A major release
+ * 1.0.2 - A subsequent maintenance release
+ * 1.2.0 - Another major release
+ * &nbsp;
+ * Snapshots
+ * ---------
+ * 1.1.2 - A snapshot (working toward the 1.2.0 release)
+ * &nbsp;
+ * In-progress development (eg. from git)
+ * --------------------------------------
+ * 1.0.1 - Development on a maintenance branch (toward 1.0.2 release)
+ * 1.1.1 - Development on head (toward 1.1.2 snapshot and 1.2.0 release)
+ * </screen></informalexample>
+ *
+ * <refsect2>
+ * <title>Compatibility</title>
+ *
+ * The API/ABI compatibility guarantees for various versions are as
+ * follows. First, let's assume some cairo-using application code that is
+ * successfully using the API/ABI "from" one version of cairo. Then let's
+ * ask the question whether this same code can be moved "to" the API/ABI
+ * of another version of cairo.
+ *
+ * Moving from a release to any later version (release, snapshot,
+ * development) is always guaranteed to provide compatibility.
+ *
+ * Moving from a snapshot to any later version is not guaranteed to
+ * provide compatibility, since snapshots may introduce new API that ends
+ * up being removed before the next release.
+ *
+ * Moving from an in-development version (odd micro component) to any
+ * later version is not guaranteed to provide compatibility. In fact,
+ * there's not even a guarantee that the code will even continue to work
+ * with the same in-development version number. This is because these
+ * numbers don't correspond to any fixed state of the software, but
+ * rather the many states between snapshots and releases.
+ *
+ * </refsect2>
+ * <refsect2>
+ * <title>Examining the version</title>
+ *
+ * Cairo provides the ability to examine the version at either
+ * compile-time or run-time and in both a human-readable form as well as
+ * an encoded form suitable for direct comparison. Cairo also provides the
+ * macro CAIRO_VERSION_ENCODE() to perform the encoding.
+ *
+ * <informalexample><screen>
+ * Compile-time
+ * ------------
+ * #CAIRO_VERSION_STRING   Human-readable
+ * #CAIRO_VERSION          Encoded, suitable for comparison
+ * &nbsp;
+ * Run-time
+ * --------
+ * cairo_version_string()  Human-readable
+ * cairo_version()         Encoded, suitable for comparison
+ * </screen></informalexample>
+ *
+ * For example, checking that the cairo version is greater than or equal
+ * to 1.0.0 could be achieved at compile-time or run-time as follows:
+ *
+ * <informalexample><programlisting>
+ * ##if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 0, 0)
+ * printf ("Compiling with suitable cairo version: %s\n", %CAIRO_VERSION_STRING);
+ * ##endif
+ *
+ * if (cairo_version() >= CAIRO_VERSION_ENCODE(1, 0, 0))
+ *     printf ("Running with suitable cairo version: %s\n", cairo_version_string ());
+ * </programlisting></informalexample>
+ *
+ * </refsect2>
+ *
+ **/
+
+/**
+ * CAIRO_VERSION:
+ *
+ * The version of cairo available at compile-time, encoded using
+ * CAIRO_VERSION_ENCODE().
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * CAIRO_VERSION_MAJOR:
+ *
+ * The major component of the version of cairo available at compile-time.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * CAIRO_VERSION_MINOR:
+ *
+ * The minor component of the version of cairo available at compile-time.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * CAIRO_VERSION_MICRO:
+ *
+ * The micro component of the version of cairo available at compile-time.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * CAIRO_VERSION_STRING:
+ *
+ * A human-readable string literal containing the version of cairo available
+ * at compile-time, in the form of "X.Y.Z".
+ *
+ * Since: 1.8
+ **/
+
+/**
+ * CAIRO_VERSION_ENCODE:
+ * @major: the major component of the version number
+ * @minor: the minor component of the version number
+ * @micro: the micro component of the version number
+ *
+ * This macro encodes the given cairo version into an integer.  The numbers
+ * returned by %CAIRO_VERSION and cairo_version() are encoded using this macro.
+ * Two encoded version numbers can be compared as integers.  The encoding ensures
+ * that later versions compare greater than earlier versions.
+ *
+ * Returns: the encoded version.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * CAIRO_VERSION_STRINGIZE:
+ * @major: the major component of the version number
+ * @minor: the minor component of the version number
+ * @micro: the micro component of the version number
+ *
+ * This macro encodes the given cairo version into an string.  The numbers
+ * returned by %CAIRO_VERSION_STRING and cairo_version_string() are encoded using this macro.
+ * The parameters to this macro must expand to numerical literals.
+ *
+ * Returns: a string literal containing the version.
+ *
+ * Since: 1.8
+ **/
+
+/**
+ * cairo_version:
+ *
+ * Returns the version of the cairo library encoded in a single
+ * integer as per %CAIRO_VERSION_ENCODE. The encoding ensures that
+ * later versions compare greater than earlier versions.
+ *
+ * A run-time comparison to check that cairo's version is greater than
+ * or equal to version X.Y.Z could be performed as follows:
+ *
+ * <informalexample><programlisting>
+ * if (cairo_version() >= CAIRO_VERSION_ENCODE(X,Y,Z)) {...}
+ * </programlisting></informalexample>
+ *
+ * See also cairo_version_string() as well as the compile-time
+ * equivalents %CAIRO_VERSION and %CAIRO_VERSION_STRING.
+ *
+ * Return value: the encoded version.
+ *
+ * Since: 1.0
+ **/
+int
+cairo_version (void)
+{
+    return CAIRO_VERSION;
+}
+
+/**
+ * cairo_version_string:
+ *
+ * Returns the version of the cairo library as a human-readable string
+ * of the form "X.Y.Z".
+ *
+ * See also cairo_version() as well as the compile-time equivalents
+ * %CAIRO_VERSION_STRING and %CAIRO_VERSION.
+ *
+ * Return value: a string containing the version.
+ *
+ * Since: 1.0
+ **/
+const char*
+cairo_version_string (void)
+{
+    return CAIRO_VERSION_STRING;
+}
+slim_hidden_def (cairo_version_string);
diff --git a/libs/cairo-1.16.0/src/cairo-version.h b/libs/cairo-1.16.0/src/cairo-version.h
new file mode 100644
index 0000000..5100800
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-version.h
@@ -0,0 +1,14 @@
+/* This is a dummy file.
+ * The actual version info is in toplevel cairo-version.h.
+ * The purpose of this file is to make most of the source files NOT depend
+ * on the real cairo-version.h, and as a result, changing library version
+ * would not cause a complete rebuild of all object files (just a relink).
+ * This is useful when bisecting. */
+#ifndef CAIRO_VERSION_H
+#define CAIRO_VERSION_H
+
+#define CAIRO_VERSION_MAJOR USE_cairo_version_OR_cairo_version_string_INSTEAD
+#define CAIRO_VERSION_MINOR USE_cairo_version_OR_cairo_version_string_INSTEAD
+#define CAIRO_VERSION_MICRO USE_cairo_version_OR_cairo_version_string_INSTEAD
+
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-vg-surface.c b/libs/cairo-1.16.0/src/cairo-vg-surface.c
new file mode 100644
index 0000000..7798633
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-vg-surface.c
@@ -0,0 +1,1854 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Opened Hand Ltd.
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.og/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *      Pierre Tardy      <tardyp@gmail.com>
+ *      Øyvind Kolås      <pippin@gimp.org>
+ *      Vladimi Vukicevic <vladimir@mozilla.com> (stubbed out base backend)
+ *      Chris Wilson      <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-vg.h"
+
+#include "cairo-cache-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-surface-clipper-private.h"
+
+#include <pixman.h>
+#include <VG/openvg.h>
+
+//#define OPENVG_DEBUG
+
+/*
+ * Work that needs to be done:
+ *  - Glyph cache / proper font support
+ *
+ *  - First-class paths
+ *    Paths are expensive for OpenVG, reuse paths whenever possible.
+ *    So add a path cache, and first class paths!
+ */
+
+typedef struct _cairo_vg_surface cairo_vg_surface_t;
+
+/* XXX need GL specific context control. :( */
+struct _cairo_vg_context {
+    cairo_status_t status;
+    cairo_reference_count_t ref_count;
+
+    unsigned long target_id;
+
+    VGPaint		paint;
+    cairo_vg_surface_t *source;
+    double		alpha;
+
+    cairo_cache_t snapshot_cache;
+
+    void *display;
+    void *context;
+
+    cairo_status_t (*create_target) (cairo_vg_context_t *,
+				     cairo_vg_surface_t *);
+    cairo_status_t (*set_target) (cairo_vg_context_t *,
+				  cairo_vg_surface_t *);
+    void (*destroy_target) (cairo_vg_context_t *, cairo_vg_surface_t *);
+};
+
+struct _cairo_vg_surface {
+    cairo_surface_t base;
+
+    cairo_vg_context_t *context;
+
+    VGImage	    image;
+    VGImageFormat   format;
+    int             width;
+    int             height;
+    cairo_bool_t    own_image;
+
+    cairo_cache_entry_t snapshot_cache_entry;
+
+    cairo_surface_clipper_t clipper;
+
+    unsigned long target_id;
+};
+
+static const cairo_surface_backend_t cairo_vg_surface_backend;
+
+slim_hidden_proto (cairo_vg_surface_create);
+
+static cairo_surface_t *
+_vg_surface_create_internal (cairo_vg_context_t *context,
+			     VGImage image,
+			     VGImageFormat format,
+			     int width, int height);
+
+static cairo_vg_context_t *
+_vg_context_reference (cairo_vg_context_t *context)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&context->ref_count));
+
+    _cairo_reference_count_inc (&context->ref_count);
+
+    return context;
+}
+
+static cairo_vg_context_t *
+_vg_context_lock (cairo_vg_context_t *context)
+{
+    /* XXX if we need to add locking, then it has to be recursive */
+    return context;
+}
+
+static cairo_int_status_t
+_vg_context_set_target (cairo_vg_context_t *context,
+			cairo_vg_surface_t *surface)
+{
+    cairo_status_t status;
+
+    if (surface->target_id == 0) {
+	status = context->create_target (context, surface);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (context->target_id == surface->target_id)
+	return CAIRO_STATUS_SUCCESS;
+
+    context->target_id = surface->target_id;
+
+    return context->set_target (context, surface);
+}
+
+static void
+_vg_context_destroy_target (cairo_vg_context_t *context,
+			    cairo_vg_surface_t *surface)
+{
+    if (surface->target_id == 0)
+	return;
+
+    if (context->target_id == surface->target_id)
+	context->set_target (context, NULL);
+
+    context->destroy_target (context, surface);
+}
+
+static cairo_bool_t
+_vg_snapshot_cache_can_remove (const void *entry)
+{
+    return TRUE;
+}
+
+static void
+_vg_snapshot_cache_remove (void *cache_entry)
+{
+    cairo_vg_surface_t *surface = cairo_container_of (cache_entry,
+						      cairo_vg_surface_t,
+						      snapshot_cache_entry);
+    surface->snapshot_cache_entry.hash = 0;
+    cairo_surface_destroy (&surface->base);
+}
+
+static cairo_status_t
+_vg_context_init (cairo_vg_context_t *context)
+{
+    cairo_status_t status;
+
+    context->status = CAIRO_STATUS_SUCCESS;
+    CAIRO_REFERENCE_COUNT_INIT (&context->ref_count, 1);
+
+    status = _cairo_cache_init (&context->snapshot_cache,
+				NULL,
+				_vg_snapshot_cache_can_remove,
+				_vg_snapshot_cache_remove,
+				16*1024*1024);
+    if (unlikely (status))
+	return status;
+
+    context->target_id = 0;
+    context->source = NULL;
+    context->alpha = 1.0;
+
+    context->paint = vgCreatePaint ();
+    vgLoadIdentity ();
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_vg_context_destroy (cairo_vg_context_t *context)
+{
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&context->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&context->ref_count))
+	return;
+
+    if (context->paint != VG_INVALID_HANDLE)
+	vgDestroyPaint (context->paint);
+
+    _cairo_cache_fini (&context->snapshot_cache);
+    free (context);
+}
+
+static void
+_vg_context_unlock (cairo_vg_context_t *context)
+{
+}
+
+#ifdef OPENVG_DEBUG
+static void check_vg_errors(const char*function,int line)
+{
+    int err = vgGetError();
+    if (err != VG_NO_ERROR){
+	printf("%s+%d:vgError detected: 0x%08x.\n",function, line,err);
+	assert(err == VG_NO_ERROR);
+    }
+
+}
+#define CHECK_VG_ERRORS() check_vg_errors(__FILE__,__LINE__)
+#else
+#define CHECK_VG_ERRORS() do{}while(0)
+#endif //OPENVG_DEBUG
+
+static pixman_format_code_t
+_vg_format_to_pixman (VGImageFormat format,
+		      cairo_bool_t *needs_premult_fixup)
+{
+    *needs_premult_fixup = FALSE;
+    switch (format) {
+	/* RGB{A,X} channel ordering */
+    case VG_sRGBX_8888: return PIXMAN_r8g8b8x8;
+    case VG_sRGBA_8888: *needs_premult_fixup = TRUE; return PIXMAN_r8g8b8a8;
+    case VG_sRGBA_8888_PRE: return PIXMAN_r8g8b8a8;
+    case VG_sRGB_565: return PIXMAN_r5g6b5;
+    case VG_sRGBA_5551: return 0;
+    case VG_sRGBA_4444: return 0;
+    case VG_sL_8: return PIXMAN_g8;
+    case VG_lRGBX_8888: return 0;
+    case VG_lRGBA_8888: return 0;
+    case VG_lRGBA_8888_PRE: return 0;
+    case VG_lL_8: return 0;
+    case VG_A_8: return PIXMAN_a8;
+    case VG_BW_1: return PIXMAN_a1;
+    case VG_A_1: return PIXMAN_a1;
+    case VG_A_4: return PIXMAN_a4;
+
+	/* {A,X}RGB channel ordering */
+    case VG_sXRGB_8888: return PIXMAN_x8r8g8b8;
+    case VG_sARGB_8888: *needs_premult_fixup = TRUE; return PIXMAN_a8r8g8b8;
+    case VG_sARGB_8888_PRE: return PIXMAN_a8r8g8b8;
+    case VG_sARGB_1555: return 0;
+    case VG_sARGB_4444: return 0;
+    case VG_lXRGB_8888: return 0;
+    case VG_lARGB_8888: return 0;
+    case VG_lARGB_8888_PRE: return 0;
+
+	/* BGR{A,X} channel ordering */
+    case VG_sBGRX_8888: return PIXMAN_b8g8r8x8;
+    case VG_sBGRA_8888: *needs_premult_fixup = TRUE; return PIXMAN_b8g8r8a8;
+    case VG_sBGRA_8888_PRE: return PIXMAN_b8g8r8a8;
+    case VG_sBGR_565: return PIXMAN_b5g6r5;
+    case VG_sBGRA_5551: return 0;
+    case VG_sBGRA_4444: return 0;
+    case VG_lBGRX_8888: return 0;
+    case VG_lBGRA_8888: return 0;
+    case VG_lBGRA_8888_PRE: return 0;
+
+	/* {A,X}BGR channel ordering */
+    case VG_sXBGR_8888: return PIXMAN_x8b8g8r8;
+    case VG_sABGR_8888: *needs_premult_fixup = TRUE; return PIXMAN_a8b8g8r8;
+    case VG_sABGR_8888_PRE: return PIXMAN_a8b8g8r8;
+    case VG_sABGR_1555: return 0;
+    case VG_sABGR_4444: return 0;
+    case VG_lXBGR_8888: return 0;
+    case VG_lABGR_8888: return 0;
+    case VG_lABGR_8888_PRE: return 0;
+    default: return 0;
+    }
+}
+
+static pixman_format_code_t
+_vg_format_to_content (VGImageFormat format)
+{
+    /* XXX could use more simple bit tests */
+    switch (format) {
+	/* RGB{A,X} channel ordering */
+    case VG_sRGBX_8888: return CAIRO_CONTENT_COLOR;
+    case VG_sRGBA_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sRGBA_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sRGB_565: return CAIRO_CONTENT_COLOR;
+    case VG_sRGBA_5551: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sRGBA_4444: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sL_8: return CAIRO_CONTENT_ALPHA;
+    case VG_lRGBX_8888: return CAIRO_CONTENT_COLOR;
+    case VG_lRGBA_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lRGBA_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lL_8: return CAIRO_CONTENT_ALPHA;
+    case VG_A_8: return CAIRO_CONTENT_ALPHA;
+    case VG_A_4: return CAIRO_CONTENT_ALPHA;
+    case VG_A_1: return CAIRO_CONTENT_ALPHA;
+    case VG_BW_1: return CAIRO_CONTENT_ALPHA;
+
+	/* {A,X}RGB channel ordering */
+    case VG_sXRGB_8888: return CAIRO_CONTENT_COLOR;
+    case VG_sARGB_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sARGB_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sARGB_1555: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sARGB_4444: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lXRGB_8888: return CAIRO_CONTENT_COLOR;
+    case VG_lARGB_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lARGB_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+
+	/* BGR{A,X} channel ordering */
+    case VG_sBGRX_8888: return CAIRO_CONTENT_COLOR;
+    case VG_sBGRA_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sBGRA_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sBGR_565: return CAIRO_CONTENT_COLOR;
+    case VG_sBGRA_5551: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sBGRA_4444: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lBGRX_8888: return CAIRO_CONTENT_COLOR;
+    case VG_lBGRA_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lBGRA_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+
+	/* {A,X}BGR channel ordering */
+    case VG_sXBGR_8888: return CAIRO_CONTENT_COLOR;
+    case VG_sABGR_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sABGR_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sABGR_1555: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_sABGR_4444: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lXBGR_8888: return CAIRO_CONTENT_COLOR;
+    case VG_lABGR_8888: return CAIRO_CONTENT_COLOR_ALPHA;
+    case VG_lABGR_8888_PRE: return CAIRO_CONTENT_COLOR_ALPHA;
+    default: return 0;
+    }
+}
+
+static VGImageFormat
+_vg_format_from_pixman (pixman_format_code_t format)
+{
+    /* XXX _PRE needs fixup */
+    switch ((int) format) {
+    case PIXMAN_r5g6b5: return VG_sRGB_565;
+    case PIXMAN_g8: return VG_sL_8;
+    case PIXMAN_a8: return VG_A_8;
+    case PIXMAN_a1: return VG_BW_1;
+    case PIXMAN_x8r8g8b8: return VG_sXRGB_8888;
+    case PIXMAN_a8r8g8b8: return VG_sARGB_8888; // _PRE
+    case PIXMAN_b8g8r8x8: return VG_sBGRX_8888;
+    case PIXMAN_b8g8r8a8: return VG_sBGRA_8888; // _PRE
+    case PIXMAN_b5g6r5: return VG_sBGR_565;
+    case PIXMAN_x8b8g8r8: return VG_sXBGR_8888;
+    case PIXMAN_a8b8g8r8: return VG_sABGR_8888; // _PRE
+    default: return 0;
+    }
+}
+
+static VGImageFormat
+_vg_format_for_content (cairo_content_t content)
+{
+    switch (content) {
+    case CAIRO_CONTENT_ALPHA: return VG_A_8;
+    case CAIRO_CONTENT_COLOR: return VG_sXRGB_8888;
+    default: ASSERT_NOT_REACHED;
+    case CAIRO_CONTENT_COLOR_ALPHA: return VG_sARGB_8888; // _PRE
+    }
+}
+
+static cairo_surface_t *
+_vg_surface_create_similar (void            *abstract_surface,
+			    cairo_content_t  content,
+			    int              width,
+			    int              height)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+
+    if (width > vgGeti (VG_MAX_IMAGE_WIDTH) ||
+	height > vgGeti (VG_MAX_IMAGE_HEIGHT))
+    {
+	return NULL;
+    }
+
+    return cairo_vg_surface_create (surface->context, content, width, height);
+}
+
+static cairo_status_t
+_vg_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+					 cairo_path_fixed_t *path,
+					 cairo_fill_rule_t   fill_rule,
+					 double              tolerance,
+					 cairo_antialias_t   antialias)
+{
+    cairo_vg_surface_t *surface = cairo_container_of (clipper,
+						      cairo_vg_surface_t,
+						      clipper);
+    cairo_vg_surface_t *mask;
+    cairo_status_t status;
+
+    if (path == NULL) {
+	vgMask (VG_INVALID_HANDLE,
+		VG_FILL_MASK, 0, 0, surface->width, surface->height);
+	vgSeti (VG_MASKING, VG_FALSE);
+	CHECK_VG_ERRORS();
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    mask = (cairo_vg_surface_t *)
+	_vg_surface_create_similar (surface, CAIRO_CONTENT_ALPHA,
+				    surface->width, surface->height);
+    if (unlikely (mask == NULL))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    status = _cairo_surface_fill (&mask->base,
+				  CAIRO_OPERATOR_SOURCE,
+				  &_cairo_pattern_white.base,
+				  path, fill_rule, tolerance, antialias,
+				  NULL);
+    if (status) {
+	cairo_surface_destroy (&mask->base);
+	return status;
+    }
+
+    vgSeti (VG_MASKING, VG_TRUE);
+    vgMask (mask->image, VG_INTERSECT_MASK, 0, 0, mask->width, mask->height);
+
+    cairo_surface_destroy (&mask->base);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_vg_surface_get_extents (void                  *abstract_surface,
+			 cairo_rectangle_int_t *extents)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+
+    extents->x = 0;
+    extents->y = 0;
+    extents->width  = surface->width;
+    extents->height = surface->height;
+
+    return TRUE;
+}
+
+#define MAX_SEG  16  /* max number of knots to upload in a batch */
+
+typedef struct _vg_path {
+    VGPath path;
+    const cairo_matrix_t *ctm_inverse;
+
+    VGubyte gseg[MAX_SEG];
+    VGfloat gdata[MAX_SEG*3*2];
+    int dcount;
+    int scount;
+} vg_path_t;
+
+static cairo_status_t
+_vg_move_to (void          *closure,
+	     const cairo_point_t *point)
+{
+    vg_path_t *path = closure;
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (path->ctm_inverse)
+	cairo_matrix_transform_point (path->ctm_inverse, &x, &y);
+
+    path->gseg[path->scount++] = VG_MOVE_TO;
+    path->gdata[path->dcount++] = x;
+    path->gdata[path->dcount++] = y;
+
+    if (path->scount >= MAX_SEG-1) {
+	vgAppendPathData (path->path, path->scount, path->gseg, path->gdata);
+	path->scount = 0;
+	path->dcount = 0;
+    }
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_vg_line_to (void          *closure,
+	     const cairo_point_t *point)
+{
+    vg_path_t *path = closure;
+    double x = _cairo_fixed_to_double (point->x);
+    double y = _cairo_fixed_to_double (point->y);
+
+    if (path->ctm_inverse)
+	cairo_matrix_transform_point (path->ctm_inverse, &x, &y);
+
+    path->gseg[path->scount++] = VG_LINE_TO;
+    path->gdata[path->dcount++] = x;
+    path->gdata[path->dcount++] = y;
+
+    if (path->scount >= MAX_SEG-1) {
+	vgAppendPathData (path->path, path->scount, path->gseg, path->gdata);
+	path->scount = 0;
+	path->dcount = 0;
+    }
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_vg_curve_to (void          *closure,
+	      const cairo_point_t *p0,
+	      const cairo_point_t *p1,
+	      const cairo_point_t *p2)
+{
+    vg_path_t *path = closure;
+    double x0 = _cairo_fixed_to_double (p0->x);
+    double y0 = _cairo_fixed_to_double (p0->y);
+    double x1 = _cairo_fixed_to_double (p1->x);
+    double y1 = _cairo_fixed_to_double (p1->y);
+    double x2 = _cairo_fixed_to_double (p2->x);
+    double y2 = _cairo_fixed_to_double (p2->y);
+
+    if (path->ctm_inverse) {
+	cairo_matrix_transform_point (path->ctm_inverse, &x0, &y0);
+	cairo_matrix_transform_point (path->ctm_inverse, &x1, &y1);
+	cairo_matrix_transform_point (path->ctm_inverse, &x2, &y2);
+    }
+
+    path->gseg[path->scount++] = VG_CUBIC_TO;
+    path->gdata[path->dcount++] = x0;
+    path->gdata[path->dcount++] = y0;
+    path->gdata[path->dcount++] = x1;
+    path->gdata[path->dcount++] = y1;
+    path->gdata[path->dcount++] = x2;
+    path->gdata[path->dcount++] = y2;
+
+    if (path->scount >= MAX_SEG-1) {
+	vgAppendPathData(path->path, path->scount, path->gseg, path->gdata);
+	path->scount = 0;
+	path->dcount = 0;
+    }
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_vg_close_path (void *closure)
+{
+    vg_path_t *path = closure;
+
+    path->gseg[path->scount++] = VG_CLOSE_PATH;
+
+    if (path->scount >= MAX_SEG-1) {
+	vgAppendPathData (path->path, path->scount, path->gseg, path->gdata);
+	path->scount = 0;
+	path->dcount = 0;
+    }
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_vg_path_from_cairo (vg_path_t    *vg_path,
+		     const cairo_path_fixed_t *path)
+{
+    cairo_status_t status;
+
+    vg_path->scount = 0;
+    vg_path->dcount = 0;
+
+    status = _cairo_path_fixed_interpret (path,
+					  _vg_move_to,
+					  _vg_line_to,
+					  _vg_curve_to,
+					  _vg_close_path,
+					  vg_path);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    vgAppendPathData (vg_path->path,
+		      vg_path->scount, vg_path->gseg, vg_path->gdata);
+    CHECK_VG_ERRORS();
+}
+
+static cairo_bool_t
+_vg_is_supported_operator (cairo_operator_t op)
+{
+    switch ((int) op) {
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_IN:
+    case CAIRO_OPERATOR_DEST_OVER:
+    case CAIRO_OPERATOR_DEST_IN:
+    case CAIRO_OPERATOR_ADD:
+	return TRUE;
+
+    default:
+	return FALSE;
+    }
+}
+
+static VGBlendMode
+_vg_operator (cairo_operator_t op)
+{
+    switch ((int) op) {
+    case CAIRO_OPERATOR_SOURCE:
+	return VG_BLEND_SRC;
+    case CAIRO_OPERATOR_OVER:
+	return VG_BLEND_SRC_OVER;
+    case CAIRO_OPERATOR_IN:
+	return VG_BLEND_SRC_IN;
+    case CAIRO_OPERATOR_DEST_OVER:
+	return VG_BLEND_DST_OVER;
+    case CAIRO_OPERATOR_DEST_IN:
+	return VG_BLEND_DST_IN;
+    case CAIRO_OPERATOR_ADD:
+	return VG_BLEND_ADDITIVE;
+    default:
+	ASSERT_NOT_REACHED;
+	return VG_BLEND_SRC_OVER;
+    }
+}
+
+static VGFillRule
+_vg_fill_rule_from_cairo (cairo_fill_rule_t rule)
+{
+    switch (rule) {
+    case CAIRO_FILL_RULE_EVEN_ODD: return VG_EVEN_ODD;
+    case CAIRO_FILL_RULE_WINDING: return VG_NON_ZERO;
+    }
+
+    ASSERT_NOT_REACHED;
+    return VG_NON_ZERO;
+}
+
+static VGRenderingQuality
+_vg_rendering_quality_from_cairo (cairo_antialias_t aa)
+{
+    switch (aa) {
+    case CAIRO_ANTIALIAS_DEFAULT:
+    case CAIRO_ANTIALIAS_SUBPIXEL:
+    case CAIRO_ANTIALIAS_GOOD:
+    case CAIRO_ANTIALIAS_BEST:
+	return VG_RENDERING_QUALITY_BETTER;
+
+    case CAIRO_ANTIALIAS_GRAY:
+    case CAIRO_ANTIALIAS_FAST:
+	return VG_RENDERING_QUALITY_FASTER;
+
+    case CAIRO_ANTIALIAS_NONE:
+	return VG_RENDERING_QUALITY_NONANTIALIASED;
+    }
+
+    ASSERT_NOT_REACHED;
+    return VG_RENDERING_QUALITY_BETTER;
+}
+
+static VGCapStyle
+_vg_line_cap_from_cairo (cairo_line_cap_t cap)
+{
+    switch (cap) {
+    case CAIRO_LINE_CAP_BUTT:   return VG_CAP_BUTT;
+    case CAIRO_LINE_CAP_ROUND:  return VG_CAP_ROUND;
+    case CAIRO_LINE_CAP_SQUARE: return VG_CAP_SQUARE;
+    }
+
+    ASSERT_NOT_REACHED;
+    return VG_CAP_BUTT;
+}
+
+static VGJoinStyle
+_vg_line_join_from_cairo (cairo_line_join_t join)
+{
+    switch (join) {
+    case CAIRO_LINE_JOIN_MITER: return VG_JOIN_MITER;
+    case CAIRO_LINE_JOIN_ROUND: return VG_JOIN_ROUND;
+    case CAIRO_LINE_JOIN_BEVEL: return VG_JOIN_BEVEL;
+    }
+
+    ASSERT_NOT_REACHED;
+    return VG_JOIN_MITER;
+}
+
+static void
+_vg_matrix_from_cairo (VGfloat *dst, const cairo_matrix_t *src)
+{
+    dst[0] = /* sx  */ src->xx;
+    dst[1] = /* shy */ src->yx;
+    dst[2] = /* w0  */ 0;
+    dst[3] = /* shx */ src->xy;
+    dst[4] = /* sy  */ src->yy;
+    dst[5] = /* w1  */ 0;
+    dst[6] = /* tx  */ src->x0;
+    dst[7] = /* ty  */ src->y0;
+    dst[8] = /* w2  */ 0;
+}
+
+static cairo_status_t
+_vg_setup_gradient_stops (cairo_vg_context_t *context,
+			  const cairo_gradient_pattern_t *pattern)
+{
+    VGint numstops = pattern->n_stops;
+    VGfloat *stops, stack_stops[CAIRO_STACK_ARRAY_LENGTH (VGfloat)];
+    int i;
+
+    if (numstops*5 < ARRAY_LENGTH (stack_stops)) {
+	stops = stack_stops;
+    } else {
+	stops = _cairo_malloc_ab (numstops, 5*sizeof (VGfloat));
+	if (unlikely (stops == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    for (i = 0; i < numstops; i++) {
+	stops[i*5 + 0] = pattern->stops[i].offset;
+	stops[i*5 + 1] = pattern->stops[i].color.red;
+	stops[i*5 + 2] = pattern->stops[i].color.green;
+	stops[i*5 + 3] = pattern->stops[i].color.blue;
+	stops[i*5 + 4] = pattern->stops[i].color.alpha * context->alpha;
+    }
+
+    vgSetParameterfv (context->paint,
+		      VG_PAINT_COLOR_RAMP_STOPS, numstops * 5, stops);
+
+    if (stops != stack_stops)
+	free (stops);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_vg_set_source_matrix (const cairo_pattern_t *pat)
+{
+    cairo_matrix_t mat;
+    cairo_status_t status;
+    VGfloat vmat[9];
+
+    mat = pat->matrix;
+    status = cairo_matrix_invert (&mat);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _vg_matrix_from_cairo (vmat, &mat);
+
+    vgSeti (VG_MATRIX_MODE, VG_MATRIX_FILL_PAINT_TO_USER);
+    vgLoadMatrix (vmat);
+    vgSeti (VG_MATRIX_MODE, VG_MATRIX_STROKE_PAINT_TO_USER);
+    vgLoadMatrix (vmat);
+    vgSeti (VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE);
+
+    CHECK_VG_ERRORS();
+}
+
+static cairo_status_t
+_vg_setup_linear_source (cairo_vg_context_t *context,
+			 const cairo_linear_pattern_t *lpat)
+{
+    VGfloat linear[4];
+
+    linear[0] = lpat->pd1.x;
+    linear[1] = lpat->pd1.y;
+    linear[2] = lpat->pd2.x;
+    linear[3] = lpat->pd2.y;
+
+    vgSetParameteri (context->paint,
+		     VG_PAINT_COLOR_RAMP_SPREAD_MODE,
+		     VG_COLOR_RAMP_SPREAD_PAD);
+    vgSetParameteri (context->paint,
+		     VG_PAINT_TYPE,
+		     VG_PAINT_TYPE_LINEAR_GRADIENT);
+    vgSetParameterfv (context->paint,
+		      VG_PAINT_LINEAR_GRADIENT, 4, linear);
+
+    _vg_set_source_matrix (&lpat->base.base);
+
+    CHECK_VG_ERRORS();
+    return _vg_setup_gradient_stops (context, &lpat->base);
+
+}
+
+static cairo_status_t
+_vg_setup_radial_source (cairo_vg_context_t *context,
+			 const cairo_radial_pattern_t *rpat)
+{
+    VGfloat radial[5];
+
+    radial[0] = rpat->cd1.center.x;
+    radial[1] = rpat->cd1.center.y;
+    radial[2] = rpat->cd2.center.x;
+    radial[3] = rpat->cd2.center.y;
+    radial[4] = rpat->cd2.radius;
+
+    vgSetParameteri (context->paint,
+		     VG_PAINT_COLOR_RAMP_SPREAD_MODE, VG_COLOR_RAMP_SPREAD_PAD);
+    vgSetParameteri (context->paint,
+		     VG_PAINT_TYPE, VG_PAINT_TYPE_RADIAL_GRADIENT);
+    vgSetParameterfv (context->paint,
+		      VG_PAINT_RADIAL_GRADIENT, 5, radial);
+
+    _vg_set_source_matrix (&rpat->base.base);
+
+    /* FIXME: copy/adapt fixes from SVG backend to add inner radius */
+
+    CHECK_VG_ERRORS();
+    return _vg_setup_gradient_stops (context, &rpat->base);
+}
+
+static cairo_status_t
+_vg_setup_solid_source (cairo_vg_context_t *context,
+			const cairo_solid_pattern_t *spat)
+{
+    VGfloat color[] = {
+	spat->color.red,
+	spat->color.green,
+	spat->color.blue,
+	spat->color.alpha * context->alpha
+    };
+
+    vgSetParameteri (context->paint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
+    vgSetParameterfv (context->paint, VG_PAINT_COLOR, 4, color);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_vg_surface_t *
+_vg_clone_recording_surface (cairo_vg_context_t *context,
+			cairo_surface_t *surface)
+{
+    VGImage vg_image;
+    VGImageFormat format;
+    cairo_status_t status;
+    cairo_rectangle_int_t extents;
+    cairo_vg_surface_t *clone;
+
+    status = _cairo_surface_get_extents (surface, &extents);
+    if (status)
+	return NULL;
+
+    if (extents.width > vgGeti (VG_MAX_IMAGE_WIDTH) ||
+	extents.height > vgGeti (VG_MAX_IMAGE_HEIGHT))
+    {
+	return NULL;
+    }
+
+    format = _vg_format_for_content (surface->content);
+
+    /* NONALIASED, FASTER, BETTER */
+    vg_image = vgCreateImage (format,
+			      extents.width, extents.height,
+			      VG_IMAGE_QUALITY_FASTER);
+    clone = (cairo_vg_surface_t *)
+	_vg_surface_create_internal (context, vg_image, format,
+				     extents.width, extents.height);
+    cairo_surface_set_device_offset (&clone->base, -extents.x, -extents.y);
+
+    status = _cairo_recording_surface_replay (surface, &clone->base);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&clone->base);
+	return (cairo_vg_surface_t *) _cairo_surface_create_in_error (status);
+    }
+
+    return clone;
+}
+
+static cairo_vg_surface_t *
+_vg_clone_image_surface (cairo_vg_context_t *context,
+			 cairo_surface_t *surface)
+{
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_status_t status;
+    VGImage vg_image;
+    VGImageFormat format;
+    cairo_rectangle_int_t extents;
+    cairo_vg_surface_t *clone;
+
+    if (surface->backend->acquire_source_image == NULL)
+	return NULL;
+
+    status = _cairo_surface_get_extents (surface, &extents);
+    if (status)
+	return NULL;
+
+    if (extents.width > vgGeti (VG_MAX_IMAGE_WIDTH) ||
+	extents.height > vgGeti (VG_MAX_IMAGE_HEIGHT))
+    {
+	return NULL;
+    }
+
+    status = _cairo_surface_acquire_source_image (surface,
+						  &image, &image_extra);
+    if (unlikely (status))
+	return (cairo_vg_surface_t *) _cairo_surface_create_in_error (status);
+
+    format = _vg_format_from_pixman (image->pixman_format);
+    if (format == 0)
+	format = _vg_format_for_content (image->base.content);
+
+    /* NONALIASED, FASTER, BETTER */
+    vg_image = vgCreateImage (format,
+			      image->width, image->height,
+			      VG_IMAGE_QUALITY_FASTER);
+    clone = (cairo_vg_surface_t *)
+	_vg_surface_create_internal (context, vg_image, format,
+				    image->width, image->height);
+    if (unlikely (clone->base.status))
+	return clone;
+
+    vgImageSubData (clone->image,
+		    image->data, image->stride,
+		    format, 0, 0, image->width, image->height);
+
+    _cairo_surface_release_source_image (surface, image, image_extra);
+
+    return clone;
+}
+
+static void
+_vg_surface_remove_from_cache (cairo_surface_t *abstract_surface)
+{
+    cairo_vg_surface_t *surface = (cairo_vg_surface_t *) abstract_surface;
+
+    if (surface->snapshot_cache_entry.hash) {
+	cairo_vg_context_t *context;
+
+	context = _vg_context_lock (surface->context);
+	_cairo_cache_remove (&context->snapshot_cache,
+			     &surface->snapshot_cache_entry);
+	_vg_context_unlock (context);
+
+	surface->snapshot_cache_entry.hash = 0;
+    }
+}
+
+static cairo_status_t
+_vg_setup_surface_source (cairo_vg_context_t *context,
+			  const cairo_surface_pattern_t *spat)
+{
+    cairo_surface_t *snapshot;
+    cairo_vg_surface_t *clone;
+    cairo_status_t status;
+
+    snapshot = _cairo_surface_has_snapshot (spat->surface,
+					    &cairo_vg_surface_backend);
+    if (snapshot != NULL) {
+	clone = (cairo_vg_surface_t *) cairo_surface_reference (snapshot);
+	goto DONE;
+    }
+
+    if (_cairo_surface_is_recording (spat->surface))
+	clone = _vg_clone_recording_surface (context, spat->surface);
+    else
+	clone = _vg_clone_image_surface (context, spat->surface);
+    if (clone == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    if (unlikely (clone->base.status))
+	return clone->base.status;
+
+    clone->snapshot_cache_entry.hash = clone->base.unique_id;
+    status = _cairo_cache_insert (&context->snapshot_cache,
+				  &clone->snapshot_cache_entry);
+    if (unlikely (status)) {
+	clone->snapshot_cache_entry.hash = 0;
+	cairo_surface_destroy (&clone->base);
+	return status;
+    }
+
+    _cairo_surface_attach_snapshot (spat->surface, &clone->base,
+				    _vg_surface_remove_from_cache);
+
+DONE:
+    cairo_surface_destroy (&context->source->base);
+    context->source = clone;
+
+    vgSetParameteri (context->paint, VG_PAINT_TYPE, VG_PAINT_TYPE_PATTERN);
+
+    switch (spat->base.extend) {
+    case CAIRO_EXTEND_PAD:
+	vgSetParameteri (context->paint,
+			 VG_PAINT_PATTERN_TILING_MODE,
+			 VG_TILE_PAD);
+	break;
+
+    case CAIRO_EXTEND_NONE:
+	vgSetParameteri (context->paint,
+			 VG_PAINT_PATTERN_TILING_MODE,
+			 VG_TILE_FILL);
+	{
+	    VGfloat color[] = {0,0,0,0};
+	    vgSetfv (VG_TILE_FILL_COLOR, 4, color);
+	}
+	break;
+
+    case CAIRO_EXTEND_REPEAT:
+	vgSetParameteri (context->paint,
+			 VG_PAINT_PATTERN_TILING_MODE,
+			 VG_TILE_REPEAT);
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_EXTEND_REFLECT:
+	vgSetParameteri (context->paint,
+			 VG_PAINT_PATTERN_TILING_MODE,
+			 VG_TILE_REFLECT);
+	break;
+    }
+    vgPaintPattern (context->paint, context->source->image);
+
+    _vg_set_source_matrix (&spat->base);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+setup_source (cairo_vg_context_t *context,
+	      const cairo_pattern_t *source)
+{
+    switch (source->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _vg_setup_solid_source (context,
+				       (cairo_solid_pattern_t *) source);
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return _vg_setup_linear_source (context,
+					(cairo_linear_pattern_t *) source);
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _vg_setup_radial_source (context,
+					(cairo_radial_pattern_t *) source);
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _vg_setup_surface_source (context,
+					 (cairo_surface_pattern_t *) source);
+    default:
+	ASSERT_NOT_REACHED;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+}
+
+static cairo_int_status_t
+_vg_surface_stroke (void                       *abstract_surface,
+		    cairo_operator_t            op,
+		    const cairo_pattern_t      *source,
+		    const cairo_path_fixed_t   *path,
+		    const cairo_stroke_style_t *style,
+		    const cairo_matrix_t       *ctm,
+		    const cairo_matrix_t       *ctm_inverse,
+		    double                      tolerance,
+		    cairo_antialias_t           antialias,
+		    const cairo_clip_t         *clip)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+    cairo_vg_context_t *context;
+    cairo_status_t status;
+    VGfloat state[9];
+    VGfloat strokeTransform[9];
+    vg_path_t vg_path;
+
+    if (! _vg_is_supported_operator (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    context = _vg_context_lock (surface->context);
+    status = _vg_context_set_target (context, surface);
+    if (status) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    status = setup_source (context, source);
+    if (status) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status)) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    vg_path.path = vgCreatePath (VG_PATH_FORMAT_STANDARD,
+				 VG_PATH_DATATYPE_F,
+				 1, 0, 0, 0,
+				 VG_PATH_CAPABILITY_ALL);
+
+    vgGetMatrix (state);
+    _vg_matrix_from_cairo (strokeTransform, ctm);
+    vgMultMatrix (strokeTransform);
+
+    vg_path.ctm_inverse = ctm_inverse;
+
+    _vg_path_from_cairo (&vg_path, path);
+
+    /* XXX DASH_PATTERN, DASH_PHASE */
+    vgSetf (VG_STROKE_LINE_WIDTH, style->line_width);
+    vgSetf (VG_STROKE_MITER_LIMIT, style->miter_limit);
+    vgSetf (VG_STROKE_JOIN_STYLE, _vg_line_join_from_cairo (style->line_join));
+    vgSetf (VG_STROKE_CAP_STYLE, _vg_line_cap_from_cairo (style->line_cap));
+
+    vgSeti (VG_BLEND_MODE, _vg_operator (op));
+
+    vgSetPaint (context->paint, VG_STROKE_PATH);
+
+    vgDrawPath (vg_path.path, VG_STROKE_PATH);
+
+    vgDestroyPath (vg_path.path);
+
+    vgLoadMatrix (state);
+
+    CHECK_VG_ERRORS();
+    _vg_context_unlock (context);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_vg_surface_fill (void                     *abstract_surface,
+		  cairo_operator_t          op,
+		  const cairo_pattern_t    *source,
+		  const cairo_path_fixed_t *path,
+		  cairo_fill_rule_t         fill_rule,
+		  double                    tolerance,
+		  cairo_antialias_t         antialias,
+		  const cairo_clip_t       *clip)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+    cairo_vg_context_t *context;
+    cairo_status_t status;
+    vg_path_t vg_path;
+
+    if (op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! _vg_is_supported_operator (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    context = _vg_context_lock (surface->context);
+    status = _vg_context_set_target (context, surface);
+    if (status) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    status = setup_source (context, source);
+    if (status) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status)) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    vg_path.path = vgCreatePath (VG_PATH_FORMAT_STANDARD,
+				 VG_PATH_DATATYPE_F,
+				 1, 0,
+				 0, 0,
+				 VG_PATH_CAPABILITY_ALL);
+    vg_path.ctm_inverse = NULL;
+
+    _vg_path_from_cairo (&vg_path, path);
+
+    /* XXX tolerance */
+
+    vgSeti (VG_BLEND_MODE, _vg_operator (op));
+    vgSetf (VG_FILL_RULE, _vg_fill_rule_from_cairo (fill_rule));
+    vgSetf (VG_RENDERING_QUALITY, _vg_rendering_quality_from_cairo (antialias));
+
+    vgSetPaint (context->paint, VG_FILL_PATH);
+
+    vgDrawPath (vg_path.path, VG_FILL_PATH);
+
+    vgDestroyPath (vg_path.path);
+
+    _vg_context_unlock (context);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_vg_surface_paint (void                  *abstract_surface,
+		   cairo_operator_t       op,
+		   const cairo_pattern_t *source,
+		   const cairo_clip_t    *clip)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+    cairo_vg_context_t *context;
+    cairo_status_t status;
+
+    if (op == CAIRO_OPERATOR_DEST)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! _vg_is_supported_operator (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    context = _vg_context_lock (surface->context);
+    status = _vg_context_set_target (context, surface);
+    if (status) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    status = setup_source (context, source);
+    if (status) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status)) {
+	_vg_context_unlock (context);
+	return status;
+    }
+
+    vgSeti (VG_BLEND_MODE, _vg_operator (op));
+    vgSetPaint (context->paint, VG_FILL_PATH);
+
+    { /* creating a rectangular path that should cover the extent */
+	VGubyte segs[] = {
+	    VG_MOVE_TO_ABS, VG_LINE_TO_ABS,
+	    VG_LINE_TO_ABS, VG_LINE_TO_ABS,
+	    VG_CLOSE_PATH
+	};
+	VGfloat data[] = {
+	    0, 0,
+	    surface->width, 0,
+	    surface->width, surface->height,
+	    0, surface->height
+	};
+	VGPath fullext;
+
+	fullext = vgCreatePath (VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
+				1,0,0,0, VG_PATH_CAPABILITY_ALL);
+	vgAppendPathData (fullext, sizeof(segs), segs, data);
+
+	vgDrawPath (fullext, VG_FILL_PATH);
+
+	vgDestroyPath (fullext);
+    }
+
+    _vg_context_unlock (context);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_vg_surface_mask (void                   *abstract_surface,
+		  cairo_operator_t        op,
+		  const cairo_pattern_t  *source,
+		  const cairo_pattern_t  *mask,
+		  const cairo_clip_t     *clip)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (! _vg_is_supported_operator (op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Handle paint-with-alpha to do fades cheaply */
+    if (mask->type == CAIRO_PATTERN_TYPE_SOLID) {
+	cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) mask;
+	cairo_vg_context_t *context = _vg_context_lock (surface->context);
+	double alpha = context->alpha;
+
+	context->alpha = solid->color.alpha;
+	status = _vg_surface_paint (abstract_surface, op, source, clip);
+	context->alpha = alpha;
+
+	_vg_context_unlock (context);
+
+	return status;
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static void
+_vg_surface_get_font_options (void                  *abstract_surface,
+			      cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_ON);
+    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_OFF);
+}
+
+static cairo_int_status_t
+_vg_surface_show_glyphs (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 cairo_glyph_t		*glyphs,
+			 int			 num_glyphs,
+			 cairo_scaled_font_t	*scaled_font,
+			 const cairo_clip_t     *clip)
+{
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_path_fixed_t path;
+
+    if (num_glyphs <= 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    _cairo_path_fixed_init (&path);
+
+    /* XXX Glyph cache! OpenVG font support in 1.1? */
+
+    status = _cairo_scaled_font_glyph_path (scaled_font,
+					    glyphs, num_glyphs,
+					    &path);
+    if (unlikely (status))
+	goto BAIL;
+
+    status = _vg_surface_fill (abstract_surface,
+			       op, source, &path,
+			       CAIRO_FILL_RULE_WINDING,
+			       CAIRO_GSTATE_TOLERANCE_DEFAULT,
+			       CAIRO_ANTIALIAS_DEFAULT,
+			       clip);
+BAIL:
+    _cairo_path_fixed_fini (&path);
+    return status;
+}
+
+static inline int
+multiply_alpha (int alpha, int color)
+{
+    int temp = alpha * color + 0x80;
+    return (temp + (temp >> 8)) >> 8;
+}
+
+static void
+premultiply_argb (uint8_t   *data,
+		  int	     width,
+		  int	     height,
+		  int	     stride)
+{
+    int i;
+
+    while (height --) {
+	uint32_t *row = (uint32_t *) data;
+
+	for (i = 0; i < width; i++) {
+	    uint32_t p = row[i];
+	    uint8_t  alpha;
+
+	    alpha = p >> 24;
+	    if (alpha == 0) {
+		 row[i] = 0;
+	    } else if (alpha != 0xff) {
+		uint8_t r = multiply_alpha (alpha, (p >> 16) & 0xff);
+		uint8_t g = multiply_alpha (alpha, (p >>  8) & 0xff);
+		uint8_t b = multiply_alpha (alpha, (p >>  0) & 0xff);
+		row[i] = (alpha << 24) | (r << 16) | (g << 8) | (b << 0);
+	    }
+	}
+
+	data += stride;
+    }
+}
+
+static cairo_int_status_t
+_vg_get_image (cairo_vg_surface_t *surface,
+	       int x, int y,
+	       int width, int height,
+	       cairo_image_surface_t **image_out)
+{
+    cairo_image_surface_t *image;
+    pixman_image_t *pixman_image;
+    pixman_format_code_t pixman_format;
+    cairo_bool_t needs_premultiply;
+
+    pixman_format = _vg_format_to_pixman (surface->format,
+					  &needs_premultiply);
+    if (pixman_format == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    pixman_image = pixman_image_create_bits (pixman_format,
+					     width, height,
+					     NULL, 0);
+    if (unlikely (pixman_image == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    vgFinish ();
+    CHECK_VG_ERRORS();
+
+    vgGetImageSubData (surface->image,
+		       pixman_image_get_data (pixman_image),
+		       pixman_image_get_stride (pixman_image),
+		       surface->format,
+		       x, y, width, height);
+
+    image = (cairo_image_surface_t *)
+	_cairo_image_surface_create_for_pixman_image (pixman_image,
+						      pixman_format);
+    if (unlikely (image->base.status)) {
+	pixman_image_unref (pixman_image);
+	return image->base.status;
+    }
+
+    if (needs_premultiply)
+	premultiply_argb (image->data, width, height, image->stride);
+
+    *image_out = image;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_vg_surface_acquire_source_image (void *abstract_surface,
+				  cairo_image_surface_t **image_out,
+				  void                  **image_extra)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+
+    CHECK_VG_ERRORS();
+    *image_extra = NULL;
+    return _vg_get_image (surface,
+			  0, 0, surface->width, surface->height,
+			  image_out);
+}
+
+static void
+_vg_surface_release_source_image (void                    *abstract_surface,
+				  cairo_image_surface_t   *image,
+				  void                    *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_status_t
+_vg_surface_finish (void *abstract_surface)
+{
+    cairo_vg_surface_t *surface = abstract_surface;
+    cairo_vg_context_t *context = _vg_context_lock (surface->context);
+
+    if (surface->snapshot_cache_entry.hash) {
+	_cairo_cache_remove (&context->snapshot_cache,
+			     &surface->snapshot_cache_entry);
+
+	surface->snapshot_cache_entry.hash = 0;
+    }
+
+    _cairo_surface_clipper_reset (&surface->clipper);
+
+    if (surface->own_image)
+	vgDestroyImage (surface->image);
+
+    _vg_context_destroy_target (context, surface);
+
+    _vg_context_unlock (context);
+    _vg_context_destroy (context);
+
+    CHECK_VG_ERRORS();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t cairo_vg_surface_backend = {
+    CAIRO_SURFACE_TYPE_VG,
+    _vg_surface_finish,
+
+    _cairo_default_context_create, /* XXX */
+
+    _vg_surface_create_similar,
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    _vg_surface_acquire_source_image,
+    _vg_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _vg_surface_get_extents,
+    _vg_surface_get_font_options, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark dirty */
+
+    _vg_surface_paint,
+    _vg_surface_mask,
+    _vg_surface_stroke,
+    _vg_surface_fill,
+    NULL, /* fill-stroke */
+    _vg_surface_show_glyphs,
+};
+
+static cairo_surface_t *
+_vg_surface_create_internal (cairo_vg_context_t *context,
+			     VGImage image,
+			     VGImageFormat format,
+			     int width, int height)
+{
+    cairo_vg_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_vg_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface->context = _vg_context_reference (context);
+
+    surface->image  = image;
+    surface->format = format;
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_vg_surface_backend,
+			 NULL, /* device */
+			 _vg_format_to_content (format),
+			 FALSE); /* is_vector */
+
+    surface->width  = width;
+    surface->height = height;
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _vg_surface_clipper_intersect_clip_path);
+
+    surface->snapshot_cache_entry.hash = 0;
+
+    surface->target_id = 0;
+
+    CHECK_VG_ERRORS();
+    return &surface->base;
+}
+
+cairo_surface_t *
+cairo_vg_surface_create_for_image (cairo_vg_context_t *context,
+				   VGImage image,
+				   VGImageFormat format,
+				   int width, int height)
+{
+    cairo_bool_t premult;
+
+    if (context->status)
+	return _cairo_surface_create_in_error (context->status);
+
+    if (image == VG_INVALID_HANDLE)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    if (_vg_format_to_pixman (format, &premult) == 0)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    return _vg_surface_create_internal (context, image, format, width, height);
+}
+
+cairo_surface_t *
+cairo_vg_surface_create (cairo_vg_context_t *context,
+			 cairo_content_t  content,
+			 int              width,
+			 int              height)
+{
+    VGImage image;
+    VGImageFormat format;
+    cairo_surface_t *surface;
+
+    if (context->status)
+	return _cairo_surface_create_in_error (context->status);
+
+    if (! CAIRO_CONTENT_VALID (content))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
+
+    if (width > vgGeti (VG_MAX_IMAGE_WIDTH) ||
+	height > vgGeti (VG_MAX_IMAGE_HEIGHT))
+    {
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+
+    format = _vg_format_for_content (content);
+    image = vgCreateImage (format, width, height, VG_IMAGE_QUALITY_BETTER);
+    if (image == VG_INVALID_HANDLE)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface = _vg_surface_create_internal (context,
+					   image, format, width, height);
+    if (unlikely (surface->status))
+	return surface;
+
+    ((cairo_vg_surface_t *) surface)->own_image = TRUE;
+    return surface;
+}
+slim_hidden_def (cairo_vg_surface_create);
+
+VGImage
+cairo_vg_surface_get_image (cairo_surface_t *abstract_surface)
+{
+    cairo_vg_surface_t *surface;
+
+    if (abstract_surface->backend != &cairo_vg_surface_backend) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return VG_INVALID_HANDLE;
+    }
+
+    surface = (cairo_vg_surface_t *) abstract_surface;
+    return surface->image;
+}
+
+int
+cairo_vg_surface_get_width (cairo_surface_t *abstract_surface)
+{
+    cairo_vg_surface_t *surface;
+
+    if (abstract_surface->backend != &cairo_vg_surface_backend) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    surface = (cairo_vg_surface_t *) abstract_surface;
+    return surface->width;
+}
+
+int
+cairo_vg_surface_get_height (cairo_surface_t *abstract_surface)
+{
+    cairo_vg_surface_t *surface;
+
+    if (abstract_surface->backend != &cairo_vg_surface_backend) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    surface = (cairo_vg_surface_t *) abstract_surface;
+    return surface->height;
+}
+
+VGImageFormat
+cairo_vg_surface_get_format (cairo_surface_t *abstract_surface)
+{
+    cairo_vg_surface_t *surface;
+
+    if (abstract_surface->backend != &cairo_vg_surface_backend) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    surface = (cairo_vg_surface_t *) abstract_surface;
+    return surface->format;
+}
+
+/* GL specific context support :-(
+ *
+ * OpenVG like cairo defers creation of surface (and the necessary
+ * paraphernalia to the application.
+ */
+
+static const cairo_vg_context_t _vg_context_nil = {
+    CAIRO_STATUS_NO_MEMORY,
+    CAIRO_REFERENCE_COUNT_INVALID
+};
+
+static const cairo_vg_context_t _vg_context_nil_invalid_visual = {
+    CAIRO_STATUS_INVALID_VISUAL,
+    CAIRO_REFERENCE_COUNT_INVALID
+};
+
+#if CAIRO_HAS_GLX_FUNCTIONS
+#include <GL/glx.h>
+
+static cairo_status_t
+glx_create_target (cairo_vg_context_t *context,
+		   cairo_vg_surface_t *surface)
+{
+    /* XXX hmm, magic required for creating an FBO points to VGImage! */
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_status_t
+glx_set_target (cairo_vg_context_t *context,
+		cairo_vg_surface_t *surface)
+{
+#if 0
+    glXMakeContextCurrent (context->display,
+			   (GLXDrawable) surface->target_id,
+			   (GLXDrawable) surface->target_id,
+			   context->context);
+#else
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+#endif
+}
+
+static void
+glx_destroy_target (cairo_vg_context_t *context,
+		    cairo_vg_surface_t *surface)
+{
+}
+
+cairo_vg_context_t *
+cairo_vg_context_create_for_glx (Display *dpy, GLXContext ctx)
+{
+    cairo_vg_context_t *context;
+    cairo_status_t status;
+
+    context = _cairo_malloc (sizeof (*context));
+    if (unlikely (context == NULL))
+	return (cairo_vg_context_t *) &_vg_context_nil;
+
+    context->display = dpy;
+    context->context = ctx;
+
+    context->create_target  = glx_create_target;
+    context->set_target     = glx_set_target;
+    context->destroy_target = glx_destroy_target;
+
+    status = _vg_context_init (context);
+    if (unlikely (status)) {
+	free (context);
+	return (cairo_vg_context_t *) &_vg_context_nil;
+    }
+
+    return context;
+}
+#endif
+
+#if CAIRO_HAS_EGL_FUNCTIONS
+static cairo_status_t
+egl_create_target (cairo_vg_context_t *context,
+		   cairo_vg_surface_t *surface)
+{
+    EGLSurface *egl_surface;
+#define RED 1
+#define GREEN 3
+#define BLUE 5
+#define ALPHA 7
+    int attribs[] = {
+	EGL_RED_SIZE, 0,
+	EGL_GREEN_SIZE, 0,
+	EGL_BLUE_SIZE, 0,
+	EGL_ALPHA_SIZE, 0,
+	EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
+	EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT,
+	EGL_NONE
+    };
+    pixman_format_code_t pixman_format;
+    EGLConfig config;
+    int num_configs = 0;
+    cairo_bool_t needs_premultiply;
+
+    pixman_format = _vg_format_to_pixman (surface->format, &needs_premultiply);
+    if (pixman_format == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* XXX no control over pixel ordering! */
+    attribs[RED]   = PIXMAN_FORMAT_R (pixman_format);
+    attribs[GREEN] = PIXMAN_FORMAT_G (pixman_format);
+    attribs[BLUE]  = PIXMAN_FORMAT_B (pixman_format);
+    attribs[ALPHA] = PIXMAN_FORMAT_A (pixman_format);
+
+    if (! eglChooseConfig (context->display,
+			   attribs,
+			   &config, 1, &num_configs) ||
+	num_configs != 1)
+    {
+	fprintf(stderr, "Error: eglChooseConfig() failed.\n");
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    egl_surface =
+	eglCreatePbufferFromClientBuffer (context->display,
+					  EGL_OPENVG_IMAGE,
+					  (EGLClientBuffer) surface->image,
+					  config,
+					  NULL);
+    surface->target_id = (unsigned long) egl_surface;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+egl_set_target (cairo_vg_context_t *context,
+		cairo_vg_surface_t *surface)
+{
+    if (! eglMakeCurrent (context->display,
+			  (EGLSurface *) surface->target_id,
+			  (EGLSurface *) surface->target_id,
+			  context->context))
+    {
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+egl_destroy_target (cairo_vg_context_t *context,
+		    cairo_vg_surface_t *surface)
+{
+    eglDestroySurface (context->display,
+		       (EGLSurface *) surface->target_id);
+}
+
+cairo_vg_context_t *
+cairo_vg_context_create_for_egl (EGLDisplay egl_display,
+				 EGLContext egl_context)
+{
+    cairo_vg_context_t *context;
+    cairo_status_t status;
+
+    context = _cairo_malloc (sizeof (*context));
+    if (unlikely (context == NULL))
+	return (cairo_vg_context_t *) &_vg_context_nil;
+
+    status = _vg_context_init (context);
+    if (unlikely (status)) {
+	free (context);
+	return (cairo_vg_context_t *) &_vg_context_nil;
+    }
+
+    context->display = egl_display;
+    context->context = egl_context;
+
+    context->create_target  = egl_create_target;
+    context->set_target     = egl_set_target;
+    context->destroy_target = egl_destroy_target;
+
+    return context;
+}
+#endif
+
+cairo_status_t
+cairo_vg_context_status (cairo_vg_context_t *context)
+{
+    return context->status;
+}
+
+void
+cairo_vg_context_destroy (cairo_vg_context_t *context)
+{
+    if (context == NULL || CAIRO_REFERENCE_COUNT_IS_INVALID (&context->ref_count))
+	return;
+
+    _vg_context_destroy (context);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-vg.h b/libs/cairo-1.16.0/src/cairo-vg.h
new file mode 100644
index 0000000..a2701db
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-vg.h
@@ -0,0 +1,103 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 * Mozilla Corporation
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Mozilla Corporation.
+ *
+ * Contributor(s):
+ *      Vladimir Vukicevic <vladimir@mozilla.com>
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_VG_H
+#define CAIRO_VG_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_VG_SURFACE
+
+#include <VG/openvg.h>
+
+CAIRO_BEGIN_DECLS
+
+typedef struct _cairo_vg_context cairo_vg_context_t;
+
+#if CAIRO_HAS_GLX_FUNCTIONS
+typedef struct __GLXcontextRec *GLXContext;
+typedef struct _XDisplay Display;
+
+cairo_public cairo_vg_context_t *
+cairo_vg_context_create_for_glx (Display *dpy,
+				 GLXContext ctx);
+#endif
+
+#if CAIRO_HAS_EGL_FUNCTIONS
+#include <EGL/egl.h>
+
+cairo_public cairo_vg_context_t *
+cairo_vg_context_create_for_egl (EGLDisplay egl_display,
+				 EGLContext egl_context);
+#endif
+
+cairo_public cairo_status_t
+cairo_vg_context_status (cairo_vg_context_t *context);
+
+cairo_public void
+cairo_vg_context_destroy (cairo_vg_context_t *context);
+
+cairo_public cairo_surface_t *
+cairo_vg_surface_create (cairo_vg_context_t *context,
+			 cairo_content_t content, int width, int height);
+
+cairo_public cairo_surface_t *
+cairo_vg_surface_create_for_image (cairo_vg_context_t *context,
+				   VGImage image,
+				   VGImageFormat format,
+				   int width, int height);
+
+cairo_public VGImage
+cairo_vg_surface_get_image (cairo_surface_t *abstract_surface);
+
+cairo_public VGImageFormat
+cairo_vg_surface_get_format (cairo_surface_t *abstract_surface);
+
+cairo_public int
+cairo_vg_surface_get_height (cairo_surface_t *abstract_surface);
+
+cairo_public int
+cairo_vg_surface_get_width (cairo_surface_t *abstract_surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_VG_SURFACE*/
+# error Cairo was not compiled with support for the OpenVG backend
+#endif /* CAIRO_HAS_VG_SURFACE*/
+
+#endif /* CAIRO_VG_H */
diff --git a/libs/cairo-1.16.0/src/cairo-wgl-context.c b/libs/cairo-1.16.0/src/cairo-wgl-context.c
new file mode 100644
index 0000000..4872374
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-wgl-context.c
@@ -0,0 +1,261 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Zoxc <zoxc32@gmail.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-gl-private.h"
+
+#include "cairo-error-private.h"
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+typedef struct _cairo_wgl_context {
+    cairo_gl_context_t base;
+
+    HDC dummy_dc;
+    HWND dummy_wnd;
+    HGLRC rc;
+
+    HDC prev_dc;
+    HGLRC prev_rc;
+} cairo_wgl_context_t;
+
+typedef struct _cairo_wgl_surface {
+    cairo_gl_surface_t base;
+
+    HDC dc;
+} cairo_wgl_surface_t;
+
+static void
+_wgl_acquire (void *abstract_ctx)
+{
+    cairo_wgl_context_t *ctx = abstract_ctx;
+
+    HDC current_dc;
+
+    ctx->prev_dc = wglGetCurrentDC ();
+    ctx->prev_rc = wglGetCurrentContext ();
+
+    if (ctx->base.current_target == NULL ||
+        _cairo_gl_surface_is_texture (ctx->base.current_target))
+    {
+        current_dc = ctx->dummy_dc;
+    }
+    else
+    {
+        cairo_wgl_surface_t *surface = (cairo_wgl_surface_t *) ctx->base.current_target;
+        current_dc = surface->dc;
+    }
+
+    if (ctx->prev_dc != current_dc ||
+	(ctx->prev_rc != ctx->rc &&
+	 current_dc != ctx->dummy_dc))
+    {
+        wglMakeCurrent (current_dc, ctx->rc);
+    }
+}
+
+static void
+_wgl_make_current (void *abstract_ctx, cairo_gl_surface_t *abstract_surface)
+{
+    cairo_wgl_context_t *ctx = abstract_ctx;
+    cairo_wgl_surface_t *surface = (cairo_wgl_surface_t *) abstract_surface;
+
+    /* Set the window as the target of our context. */
+    wglMakeCurrent (surface->dc, ctx->rc);
+}
+
+static void
+_wgl_release (void *abstract_ctx)
+{
+    cairo_wgl_context_t *ctx = abstract_ctx;
+
+    if (ctx->prev_dc != wglGetCurrentDC () ||
+        ctx->prev_rc != wglGetCurrentContext ())
+    {
+        wglMakeCurrent (ctx->prev_dc,
+                        ctx->prev_rc);
+    }
+}
+
+static void
+_wgl_swap_buffers (void *abstract_ctx,
+		   cairo_gl_surface_t *abstract_surface)
+{
+    cairo_wgl_surface_t *surface = (cairo_wgl_surface_t *) abstract_surface;
+
+    SwapBuffers (surface->dc);
+}
+
+static void
+_wgl_destroy (void *abstract_ctx)
+{
+    cairo_wgl_context_t *ctx = abstract_ctx;
+
+    if (ctx->dummy_dc != 0) {	
+        wglMakeCurrent (ctx->dummy_dc, 0);
+        ReleaseDC (ctx->dummy_wnd, ctx->dummy_dc);
+        DestroyWindow (ctx->dummy_wnd);
+    }
+}
+
+static cairo_status_t
+_wgl_dummy_ctx (cairo_wgl_context_t *ctx)
+{
+    WNDCLASSEXA wincl;
+    PIXELFORMATDESCRIPTOR pfd;
+    int format;
+    HDC dc;
+
+    ZeroMemory (&wincl, sizeof (WNDCLASSEXA));
+    wincl.cbSize = sizeof (WNDCLASSEXA);
+    wincl.hInstance = GetModuleHandle (0);
+    wincl.lpszClassName = "cairo_wgl_context_dummy";
+    wincl.lpfnWndProc = DefWindowProcA;
+    wincl.style = CS_OWNDC;
+
+    RegisterClassExA (&wincl);
+
+    ctx->dummy_wnd = CreateWindowA ("cairo_wgl_context_dummy", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+    ctx->dummy_dc = GetDC (ctx->dummy_wnd);
+
+    ZeroMemory (&pfd, sizeof (PIXELFORMATDESCRIPTOR));
+    pfd.nSize = sizeof (PIXELFORMATDESCRIPTOR);
+    pfd.nVersion = 1;
+    pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+    pfd.iPixelType = PFD_TYPE_RGBA;
+    pfd.cColorBits = 24;
+    pfd.cDepthBits = 16;
+    pfd.iLayerType = PFD_MAIN_PLANE;
+
+    format = ChoosePixelFormat (ctx->dummy_dc, &pfd);
+    SetPixelFormat (ctx->dummy_dc, format, &pfd);
+
+    wglMakeCurrent(ctx->dummy_dc, ctx->rc);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_device_t *
+cairo_wgl_device_create (HGLRC rc)
+{
+    cairo_wgl_context_t *ctx;
+    cairo_status_t status;
+
+    ctx = calloc (1, sizeof (cairo_wgl_context_t));
+    if (unlikely (ctx == NULL))
+        return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    ctx->rc = rc;
+    ctx->prev_dc = 0;
+    ctx->prev_rc = 0;
+
+    status = _wgl_dummy_ctx (ctx);
+    if (unlikely (status)) {
+        free (ctx);
+        return _cairo_gl_context_create_in_error (status);
+    }
+
+    ctx->base.acquire = _wgl_acquire;
+    ctx->base.release = _wgl_release;
+    ctx->base.make_current = _wgl_make_current;
+    ctx->base.swap_buffers = _wgl_swap_buffers;
+    ctx->base.destroy = _wgl_destroy;
+
+    status = _cairo_gl_dispatch_init (&ctx->base.dispatch,
+				      (cairo_gl_get_proc_addr_func_t) wglGetProcAddress);
+    if (unlikely (status)) {
+	free (ctx);
+	return _cairo_gl_context_create_in_error (status);
+    }
+
+    status = _cairo_gl_context_init (&ctx->base);
+    if (unlikely (status)) {
+        free (ctx);
+        return _cairo_gl_context_create_in_error (status);
+    }
+
+    ctx->base.release (ctx);
+
+    return &ctx->base.base;
+}
+
+HGLRC
+cairo_wgl_device_get_context (cairo_device_t *device)
+{
+    cairo_wgl_context_t *ctx;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL) {
+        _cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+        return NULL;
+    }
+
+    ctx = (cairo_wgl_context_t *) device;
+
+    return ctx->rc;
+}
+
+cairo_surface_t *
+cairo_gl_surface_create_for_dc (cairo_device_t	*device,
+				HDC			 dc,
+				int			 width,
+				int			 height)
+{
+    cairo_wgl_surface_t *surface;
+
+    if (unlikely (device->status))
+        return _cairo_surface_create_in_error (device->status);
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_GL)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+
+    if (width <= 0 || height <= 0)
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    surface = calloc (1, sizeof (cairo_wgl_surface_t));
+    if (unlikely (surface == NULL))
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_gl_surface_init (device, &surface->base,
+			    CAIRO_CONTENT_COLOR_ALPHA, width, height);
+    surface->dc = dc;
+
+    return &surface->base.base;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-wideint-private.h b/libs/cairo-1.16.0/src/cairo-wideint-private.h
new file mode 100644
index 0000000..3f5491b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-wideint-private.h
@@ -0,0 +1,338 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Keith Packard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *	Keith R. Packard <keithp@keithp.com>
+ *
+ */
+
+#ifndef CAIRO_WIDEINT_H
+#define CAIRO_WIDEINT_H
+
+#include "cairo-wideint-type-private.h"
+
+#include "cairo-compiler-private.h"
+
+/*
+ * 64-bit datatypes.  Two separate implementations, one using
+ * built-in 64-bit signed/unsigned types another implemented
+ * as a pair of 32-bit ints
+ */
+
+#define I cairo_private cairo_const
+
+#if !HAVE_UINT64_T
+
+cairo_uquorem64_t I
+_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den);
+
+cairo_uint64_t I	_cairo_double_to_uint64 (double i);
+double	       I	_cairo_uint64_to_double (cairo_uint64_t i);
+cairo_int64_t  I	_cairo_double_to_int64 (double i);
+double	       I	_cairo_int64_to_double (cairo_uint64_t i);
+
+cairo_uint64_t I	_cairo_uint32_to_uint64 (uint32_t i);
+#define			_cairo_uint64_to_uint32(a)  ((a).lo)
+cairo_uint64_t I	_cairo_uint64_add (cairo_uint64_t a, cairo_uint64_t b);
+cairo_uint64_t I	_cairo_uint64_sub (cairo_uint64_t a, cairo_uint64_t b);
+cairo_uint64_t I	_cairo_uint64_mul (cairo_uint64_t a, cairo_uint64_t b);
+cairo_uint64_t I	_cairo_uint32x32_64_mul (uint32_t a, uint32_t b);
+cairo_uint64_t I	_cairo_uint64_lsl (cairo_uint64_t a, int shift);
+cairo_uint64_t I	_cairo_uint64_rsl (cairo_uint64_t a, int shift);
+cairo_uint64_t I	_cairo_uint64_rsa (cairo_uint64_t a, int shift);
+int	       I	_cairo_uint64_lt (cairo_uint64_t a, cairo_uint64_t b);
+int	       I	_cairo_uint64_cmp (cairo_uint64_t a, cairo_uint64_t b);
+int	       I	_cairo_uint64_eq (cairo_uint64_t a, cairo_uint64_t b);
+cairo_uint64_t I	_cairo_uint64_negate (cairo_uint64_t a);
+#define			_cairo_uint64_is_zero(a) ((a).hi == 0 && (a).lo == 0)
+#define			_cairo_uint64_negative(a)   (((int32_t) ((a).hi)) < 0)
+cairo_uint64_t I	_cairo_uint64_not (cairo_uint64_t a);
+
+#define			_cairo_uint64_to_int64(i)   (i)
+#define			_cairo_int64_to_uint64(i)   (i)
+
+cairo_int64_t  I	_cairo_int32_to_int64(int32_t i);
+#define			_cairo_int64_to_int32(a)    ((int32_t) _cairo_uint64_to_uint32(a))
+#define			_cairo_int64_add(a,b)	    _cairo_uint64_add (a,b)
+#define			_cairo_int64_sub(a,b)	    _cairo_uint64_sub (a,b)
+#define			_cairo_int64_mul(a,b)	    _cairo_uint64_mul (a,b)
+cairo_int64_t  I	_cairo_int32x32_64_mul (int32_t a, int32_t b);
+int	       I	_cairo_int64_lt (cairo_int64_t a, cairo_int64_t b);
+int	       I	_cairo_int64_cmp (cairo_int64_t a, cairo_int64_t b);
+#define			_cairo_int64_is_zero(a)	    _cairo_uint64_is_zero (a)
+#define			_cairo_int64_eq(a,b)	    _cairo_uint64_eq (a,b)
+#define			_cairo_int64_lsl(a,b)	    _cairo_uint64_lsl (a,b)
+#define			_cairo_int64_rsl(a,b)	    _cairo_uint64_rsl (a,b)
+#define			_cairo_int64_rsa(a,b)	    _cairo_uint64_rsa (a,b)
+#define			_cairo_int64_negate(a)	    _cairo_uint64_negate(a)
+#define			_cairo_int64_negative(a)    (((int32_t) ((a).hi)) < 0)
+#define			_cairo_int64_not(a)	    _cairo_uint64_not(a)
+
+#else
+
+static inline cairo_uquorem64_t
+_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den)
+{
+    cairo_uquorem64_t	qr;
+
+    qr.quo = num / den;
+    qr.rem = num % den;
+    return qr;
+}
+
+/*
+ * These need to be functions or gcc will complain when used on the
+ * result of a function:
+ *
+ * warning: cast from function call of type ‘#cairo_uint64_t’ to
+ * non-matching type ‘double’
+ */
+static cairo_always_inline cairo_const cairo_uint64_t _cairo_double_to_uint64 (double i) { return i; }
+static cairo_always_inline cairo_const double _cairo_uint64_to_double (cairo_uint64_t i) { return i; }
+
+static cairo_always_inline cairo_int64_t I _cairo_double_to_int64 (double i) { return i; }
+static cairo_always_inline double I _cairo_int64_to_double (cairo_int64_t i) { return i; }
+
+#define			_cairo_uint32_to_uint64(i)  ((uint64_t) (i))
+#define			_cairo_uint64_to_uint32(i)  ((uint32_t) (i))
+#define			_cairo_uint64_add(a,b)	    ((a) + (b))
+#define			_cairo_uint64_sub(a,b)	    ((a) - (b))
+#define			_cairo_uint64_mul(a,b)	    ((a) * (b))
+#define			_cairo_uint32x32_64_mul(a,b)	((uint64_t) (a) * (b))
+#define			_cairo_uint64_lsl(a,b)	    ((a) << (b))
+#define			_cairo_uint64_rsl(a,b)	    ((uint64_t) (a) >> (b))
+#define			_cairo_uint64_rsa(a,b)	    ((uint64_t) ((int64_t) (a) >> (b)))
+#define			_cairo_uint64_lt(a,b)	    ((a) < (b))
+#define                 _cairo_uint64_cmp(a,b)       ((a) == (b) ? 0 : (a) < (b) ? -1 : 1)
+#define			_cairo_uint64_is_zero(a)    ((a) == 0)
+#define			_cairo_uint64_eq(a,b)	    ((a) == (b))
+#define			_cairo_uint64_negate(a)	    ((uint64_t) -((int64_t) (a)))
+#define			_cairo_uint64_negative(a)   ((int64_t) (a) < 0)
+#define			_cairo_uint64_not(a)	    (~(a))
+
+#define			_cairo_uint64_to_int64(i)   ((int64_t) (i))
+#define			_cairo_int64_to_uint64(i)   ((uint64_t) (i))
+
+#define			_cairo_int32_to_int64(i)    ((int64_t) (i))
+#define			_cairo_int64_to_int32(i)    ((int32_t) (i))
+#define			_cairo_int64_add(a,b)	    ((a) + (b))
+#define			_cairo_int64_sub(a,b)	    ((a) - (b))
+#define			_cairo_int64_mul(a,b)	    ((a) * (b))
+#define			_cairo_int32x32_64_mul(a,b) ((int64_t) (a) * (b))
+#define			_cairo_int64_lt(a,b)	    ((a) < (b))
+#define                 _cairo_int64_cmp(a,b)       ((a) == (b) ? 0 : (a) < (b) ? -1 : 1)
+#define			_cairo_int64_is_zero(a)     ((a) == 0)
+#define			_cairo_int64_eq(a,b)	    ((a) == (b))
+#define			_cairo_int64_lsl(a,b)	    ((a) << (b))
+#define			_cairo_int64_rsl(a,b)	    ((int64_t) ((uint64_t) (a) >> (b)))
+#define			_cairo_int64_rsa(a,b)	    ((int64_t) (a) >> (b))
+#define			_cairo_int64_negate(a)	    (-(a))
+#define			_cairo_int64_negative(a)    ((a) < 0)
+#define			_cairo_int64_not(a)	    (~(a))
+
+#endif
+
+/*
+ * 64-bit comparisons derived from lt or eq
+ */
+#define			_cairo_uint64_le(a,b)	    (!_cairo_uint64_gt(a,b))
+#define			_cairo_uint64_ne(a,b)	    (!_cairo_uint64_eq(a,b))
+#define			_cairo_uint64_ge(a,b)	    (!_cairo_uint64_lt(a,b))
+#define			_cairo_uint64_gt(a,b)	    _cairo_uint64_lt(b,a)
+
+#define			_cairo_int64_le(a,b)	    (!_cairo_int64_gt(a,b))
+#define			_cairo_int64_ne(a,b)	    (!_cairo_int64_eq(a,b))
+#define			_cairo_int64_ge(a,b)	    (!_cairo_int64_lt(a,b))
+#define			_cairo_int64_gt(a,b)	    _cairo_int64_lt(b,a)
+
+/*
+ * As the C implementation always computes both, create
+ * a function which returns both for the 'native' type as well
+ */
+
+static inline cairo_quorem64_t
+_cairo_int64_divrem (cairo_int64_t num, cairo_int64_t den)
+{
+    int			num_neg = _cairo_int64_negative (num);
+    int			den_neg = _cairo_int64_negative (den);
+    cairo_uquorem64_t	uqr;
+    cairo_quorem64_t	qr;
+
+    if (num_neg)
+	num = _cairo_int64_negate (num);
+    if (den_neg)
+	den = _cairo_int64_negate (den);
+    uqr = _cairo_uint64_divrem (num, den);
+    if (num_neg)
+	qr.rem = _cairo_int64_negate (uqr.rem);
+    else
+	qr.rem = uqr.rem;
+    if (num_neg != den_neg)
+	qr.quo = (cairo_int64_t) _cairo_int64_negate (uqr.quo);
+    else
+	qr.quo = (cairo_int64_t) uqr.quo;
+    return qr;
+}
+
+static inline int32_t
+_cairo_int64_32_div (cairo_int64_t num, int32_t den)
+{
+#if !HAVE_UINT64_T
+    return _cairo_int64_to_int32
+	(_cairo_int64_divrem (num, _cairo_int32_to_int64 (den)).quo);
+#else
+    return num / den;
+#endif
+}
+
+/*
+ * 128-bit datatypes.  Again, provide two implementations in
+ * case the machine has a native 128-bit datatype.  GCC supports int128_t
+ * on ia64
+ */
+
+#if !HAVE_UINT128_T
+
+cairo_uint128_t I	_cairo_uint32_to_uint128 (uint32_t i);
+cairo_uint128_t I	_cairo_uint64_to_uint128 (cairo_uint64_t i);
+#define			_cairo_uint128_to_uint64(a)	((a).lo)
+#define			_cairo_uint128_to_uint32(a)	_cairo_uint64_to_uint32(_cairo_uint128_to_uint64(a))
+cairo_uint128_t I	_cairo_uint128_add (cairo_uint128_t a, cairo_uint128_t b);
+cairo_uint128_t I	_cairo_uint128_sub (cairo_uint128_t a, cairo_uint128_t b);
+cairo_uint128_t I	_cairo_uint128_mul (cairo_uint128_t a, cairo_uint128_t b);
+cairo_uint128_t I	_cairo_uint64x64_128_mul (cairo_uint64_t a, cairo_uint64_t b);
+cairo_uint128_t I	_cairo_uint128_lsl (cairo_uint128_t a, int shift);
+cairo_uint128_t I	_cairo_uint128_rsl (cairo_uint128_t a, int shift);
+cairo_uint128_t I	_cairo_uint128_rsa (cairo_uint128_t a, int shift);
+int	        I	_cairo_uint128_lt (cairo_uint128_t a, cairo_uint128_t b);
+int	        I	_cairo_uint128_cmp (cairo_uint128_t a, cairo_uint128_t b);
+int	        I	_cairo_uint128_eq (cairo_uint128_t a, cairo_uint128_t b);
+#define			_cairo_uint128_is_zero(a) (_cairo_uint64_is_zero ((a).hi) && _cairo_uint64_is_zero ((a).lo))
+cairo_uint128_t I	_cairo_uint128_negate (cairo_uint128_t a);
+#define			_cairo_uint128_negative(a)  (_cairo_uint64_negative(a.hi))
+cairo_uint128_t I	_cairo_uint128_not (cairo_uint128_t a);
+
+#define			_cairo_uint128_to_int128(i)	(i)
+#define			_cairo_int128_to_uint128(i)	(i)
+
+cairo_int128_t  I	_cairo_int32_to_int128 (int32_t i);
+cairo_int128_t  I	_cairo_int64_to_int128 (cairo_int64_t i);
+#define			_cairo_int128_to_int64(a)   ((cairo_int64_t) (a).lo)
+#define			_cairo_int128_to_int32(a)   _cairo_int64_to_int32(_cairo_int128_to_int64(a))
+#define			_cairo_int128_add(a,b)	    _cairo_uint128_add(a,b)
+#define			_cairo_int128_sub(a,b)	    _cairo_uint128_sub(a,b)
+#define			_cairo_int128_mul(a,b)	    _cairo_uint128_mul(a,b)
+cairo_int128_t I _cairo_int64x64_128_mul (cairo_int64_t a, cairo_int64_t b);
+#define                 _cairo_int64x32_128_mul(a, b) _cairo_int64x64_128_mul(a, _cairo_int32_to_int64(b))
+#define			_cairo_int128_lsl(a,b)	    _cairo_uint128_lsl(a,b)
+#define			_cairo_int128_rsl(a,b)	    _cairo_uint128_rsl(a,b)
+#define			_cairo_int128_rsa(a,b)	    _cairo_uint128_rsa(a,b)
+int 	        I	_cairo_int128_lt (cairo_int128_t a, cairo_int128_t b);
+int	        I	_cairo_int128_cmp (cairo_int128_t a, cairo_int128_t b);
+#define			_cairo_int128_is_zero(a)    _cairo_uint128_is_zero (a)
+#define			_cairo_int128_eq(a,b)	    _cairo_uint128_eq (a,b)
+#define			_cairo_int128_negate(a)	    _cairo_uint128_negate(a)
+#define			_cairo_int128_negative(a)   (_cairo_uint128_negative(a))
+#define			_cairo_int128_not(a)	    _cairo_uint128_not(a)
+
+#else	/* !HAVE_UINT128_T */
+
+#define			_cairo_uint32_to_uint128(i) ((uint128_t) (i))
+#define			_cairo_uint64_to_uint128(i) ((uint128_t) (i))
+#define			_cairo_uint128_to_uint64(i) ((uint64_t) (i))
+#define			_cairo_uint128_to_uint32(i) ((uint32_t) (i))
+#define			_cairo_uint128_add(a,b)	    ((a) + (b))
+#define			_cairo_uint128_sub(a,b)	    ((a) - (b))
+#define			_cairo_uint128_mul(a,b)	    ((a) * (b))
+#define			_cairo_uint64x64_128_mul(a,b)	((uint128_t) (a) * (b))
+#define			_cairo_uint128_lsl(a,b)	    ((a) << (b))
+#define			_cairo_uint128_rsl(a,b)	    ((uint128_t) (a) >> (b))
+#define			_cairo_uint128_rsa(a,b)	    ((uint128_t) ((int128_t) (a) >> (b)))
+#define			_cairo_uint128_lt(a,b)	    ((a) < (b))
+#define			_cairo_uint128_cmp(a,b)	    ((a) == (b) ? 0 : (a) < (b) ? -1 : 1)
+#define			_cairo_uint128_is_zero(a)   ((a) == 0)
+#define			_cairo_uint128_eq(a,b)	    ((a) == (b))
+#define			_cairo_uint128_negate(a)    ((uint128_t) -((int128_t) (a)))
+#define			_cairo_uint128_negative(a)  ((int128_t) (a) < 0)
+#define			_cairo_uint128_not(a)	    (~(a))
+
+#define			_cairo_uint128_to_int128(i) ((int128_t) (i))
+#define			_cairo_int128_to_uint128(i) ((uint128_t) (i))
+
+#define			_cairo_int32_to_int128(i)   ((int128_t) (i))
+#define			_cairo_int64_to_int128(i)   ((int128_t) (i))
+#define			_cairo_int128_to_int64(i)   ((int64_t) (i))
+#define			_cairo_int128_to_int32(i)   ((int32_t) (i))
+#define			_cairo_int128_add(a,b)	    ((a) + (b))
+#define			_cairo_int128_sub(a,b)	    ((a) - (b))
+#define			_cairo_int128_mul(a,b)	    ((a) * (b))
+#define			_cairo_int64x64_128_mul(a,b) ((int128_t) (a) * (b))
+#define                 _cairo_int64x32_128_mul(a, b) _cairo_int64x64_128_mul(a, _cairo_int32_to_int64(b))
+#define			_cairo_int128_lt(a,b)	    ((a) < (b))
+#define			_cairo_int128_cmp(a,b)	    ((a) == (b) ? 0 : (a) < (b) ? -1 : 1)
+#define			_cairo_int128_is_zero(a)    ((a) == 0)
+#define			_cairo_int128_eq(a,b)	    ((a) == (b))
+#define			_cairo_int128_lsl(a,b)	    ((a) << (b))
+#define			_cairo_int128_rsl(a,b)	    ((int128_t) ((uint128_t) (a) >> (b)))
+#define			_cairo_int128_rsa(a,b)	    ((int128_t) (a) >> (b))
+#define			_cairo_int128_negate(a)	    (-(a))
+#define			_cairo_int128_negative(a)   ((a) < 0)
+#define			_cairo_int128_not(a)	    (~(a))
+
+#endif	/* HAVE_UINT128_T */
+
+cairo_uquorem128_t I
+_cairo_uint128_divrem (cairo_uint128_t num, cairo_uint128_t den);
+
+cairo_quorem128_t I
+_cairo_int128_divrem (cairo_int128_t num, cairo_int128_t den);
+
+cairo_uquorem64_t I
+_cairo_uint_96by64_32x64_divrem (cairo_uint128_t num,
+				 cairo_uint64_t  den);
+
+cairo_quorem64_t I
+_cairo_int_96by64_32x64_divrem (cairo_int128_t num,
+				cairo_int64_t  den);
+
+#define			_cairo_uint128_le(a,b)	    (!_cairo_uint128_gt(a,b))
+#define			_cairo_uint128_ne(a,b)	    (!_cairo_uint128_eq(a,b))
+#define			_cairo_uint128_ge(a,b)	    (!_cairo_uint128_lt(a,b))
+#define			_cairo_uint128_gt(a,b)	    _cairo_uint128_lt(b,a)
+
+#define			_cairo_int128_le(a,b)	    (!_cairo_int128_gt(a,b))
+#define			_cairo_int128_ne(a,b)	    (!_cairo_int128_eq(a,b))
+#define			_cairo_int128_ge(a,b)	    (!_cairo_int128_lt(a,b))
+#define			_cairo_int128_gt(a,b)	    _cairo_int128_lt(b,a)
+
+#undef I
+
+#endif /* CAIRO_WIDEINT_H */
diff --git a/libs/cairo-1.16.0/src/cairo-wideint-type-private.h b/libs/cairo-1.16.0/src/cairo-wideint-type-private.h
new file mode 100644
index 0000000..84a3cba
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-wideint-type-private.h
@@ -0,0 +1,158 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Keith Packard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *	Keith R. Packard <keithp@keithp.com>
+ *
+ */
+
+#ifndef CAIRO_WIDEINT_TYPE_H
+#define CAIRO_WIDEINT_TYPE_H
+
+#include "cairo.h"
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if   HAVE_STDINT_H
+# include <stdint.h>
+#elif HAVE_INTTYPES_H
+# include <inttypes.h>
+#elif HAVE_SYS_INT_TYPES_H
+# include <sys/int_types.h>
+#elif defined(_MSC_VER)
+  typedef __int8 int8_t;
+  typedef unsigned __int8 uint8_t;
+  typedef __int16 int16_t;
+  typedef unsigned __int16 uint16_t;
+  typedef __int32 int32_t;
+  typedef unsigned __int32 uint32_t;
+  typedef __int64 int64_t;
+  typedef unsigned __int64 uint64_t;
+# ifndef HAVE_UINT64_T
+#  define HAVE_UINT64_T 1
+# endif
+#else
+#error Cannot find definitions for fixed-width integral types (uint8_t, uint32_t, etc.)
+#endif
+
+#ifndef INT16_MIN
+# define INT16_MIN	(-32767-1)
+#endif
+#ifndef INT16_MAX
+# define INT16_MAX	(32767)
+#endif
+#ifndef UINT16_MAX
+# define UINT16_MAX	(65535)
+#endif
+#ifndef INT32_MIN
+# define INT32_MIN	(-2147483647-1)
+#endif
+#ifndef INT32_MAX
+# define INT32_MAX	(2147483647)
+#endif
+#ifndef UINT32_MAX
+# define UINT32_MAX     (4294967295U)
+#endif
+
+#if HAVE_BYTESWAP_H
+# include <byteswap.h>
+#endif
+#ifndef bswap_16
+# define bswap_16(p) \
+	(((((uint16_t)(p)) & 0x00ff) << 8) | \
+	  (((uint16_t)(p))           >> 8));
+#endif
+#ifndef bswap_32
+# define bswap_32(p) \
+         (((((uint32_t)(p)) & 0x000000ff) << 24) | \
+	  ((((uint32_t)(p)) & 0x0000ff00) << 8)  | \
+	  ((((uint32_t)(p)) & 0x00ff0000) >> 8)  | \
+	  ((((uint32_t)(p)))              >> 24));
+#endif
+
+
+#if !HAVE_UINT64_T
+
+typedef struct _cairo_uint64 {
+    uint32_t	lo, hi;
+} cairo_uint64_t, cairo_int64_t;
+
+#else
+
+typedef uint64_t    cairo_uint64_t;
+typedef int64_t	    cairo_int64_t;
+
+#endif
+
+typedef struct _cairo_uquorem64 {
+    cairo_uint64_t	quo;
+    cairo_uint64_t	rem;
+} cairo_uquorem64_t;
+
+typedef struct _cairo_quorem64 {
+    cairo_int64_t	quo;
+    cairo_int64_t	rem;
+} cairo_quorem64_t;
+
+/* gcc has a non-standard name. */
+#if HAVE___UINT128_T && !HAVE_UINT128_T
+typedef __uint128_t uint128_t;
+typedef __int128_t int128_t;
+#define HAVE_UINT128_T 1
+#endif
+
+#if !HAVE_UINT128_T
+
+typedef struct cairo_uint128 {
+    cairo_uint64_t	lo, hi;
+} cairo_uint128_t, cairo_int128_t;
+
+#else
+
+typedef uint128_t	cairo_uint128_t;
+typedef int128_t	cairo_int128_t;
+
+#endif
+
+typedef struct _cairo_uquorem128 {
+    cairo_uint128_t	quo;
+    cairo_uint128_t	rem;
+} cairo_uquorem128_t;
+
+typedef struct _cairo_quorem128 {
+    cairo_int128_t	quo;
+    cairo_int128_t	rem;
+} cairo_quorem128_t;
+
+
+#endif /* CAIRO_WIDEINT_H */
diff --git a/libs/cairo-1.16.0/src/cairo-wideint.c b/libs/cairo-1.16.0/src/cairo-wideint.c
new file mode 100644
index 0000000..2e056fa
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-wideint.c
@@ -0,0 +1,852 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2004 Keith Packard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Keith Packard
+ *
+ * Contributor(s):
+ *	Keith R. Packard <keithp@keithp.com>
+ */
+
+#include "cairoint.h"
+
+#if HAVE_UINT64_T
+
+#define uint64_lo32(i)	((i) & 0xffffffff)
+#define uint64_hi32(i)	((i) >> 32)
+#define uint64_lo(i)	((i) & 0xffffffff)
+#define uint64_hi(i)	((i) >> 32)
+#define uint64_shift32(i)   ((i) << 32)
+#define uint64_carry32	(((uint64_t) 1) << 32)
+
+#define _cairo_uint32s_to_uint64(h,l) ((uint64_t) (h) << 32 | (l))
+
+#else
+
+#define uint64_lo32(i)	((i).lo)
+#define uint64_hi32(i)	((i).hi)
+
+static cairo_uint64_t
+uint64_lo (cairo_uint64_t i)
+{
+    cairo_uint64_t  s;
+
+    s.lo = i.lo;
+    s.hi = 0;
+    return s;
+}
+
+static cairo_uint64_t
+uint64_hi (cairo_uint64_t i)
+{
+    cairo_uint64_t  s;
+
+    s.lo = i.hi;
+    s.hi = 0;
+    return s;
+}
+
+static cairo_uint64_t
+uint64_shift32 (cairo_uint64_t i)
+{
+    cairo_uint64_t  s;
+
+    s.lo = 0;
+    s.hi = i.lo;
+    return s;
+}
+
+static const cairo_uint64_t uint64_carry32 = { 0, 1 };
+
+cairo_uint64_t
+_cairo_double_to_uint64 (double i)
+{
+    cairo_uint64_t	q;
+
+    q.hi = i * (1. / 4294967296.);
+    q.lo = i - q.hi * 4294967296.;
+    return q;
+}
+
+double
+_cairo_uint64_to_double (cairo_uint64_t i)
+{
+    return i.hi * 4294967296. + i.lo;
+}
+
+cairo_int64_t
+_cairo_double_to_int64 (double i)
+{
+    cairo_uint64_t	q;
+
+    q.hi = i * (1. / INT32_MAX);
+    q.lo = i - q.hi * (double)INT32_MAX;
+    return q;
+}
+
+double
+_cairo_int64_to_double (cairo_int64_t i)
+{
+    return i.hi * INT32_MAX + i.lo;
+}
+
+cairo_uint64_t
+_cairo_uint32_to_uint64 (uint32_t i)
+{
+    cairo_uint64_t	q;
+
+    q.lo = i;
+    q.hi = 0;
+    return q;
+}
+
+cairo_int64_t
+_cairo_int32_to_int64 (int32_t i)
+{
+    cairo_uint64_t	q;
+
+    q.lo = i;
+    q.hi = i < 0 ? -1 : 0;
+    return q;
+}
+
+static cairo_uint64_t
+_cairo_uint32s_to_uint64 (uint32_t h, uint32_t l)
+{
+    cairo_uint64_t	q;
+
+    q.lo = l;
+    q.hi = h;
+    return q;
+}
+
+cairo_uint64_t
+_cairo_uint64_add (cairo_uint64_t a, cairo_uint64_t b)
+{
+    cairo_uint64_t	s;
+
+    s.hi = a.hi + b.hi;
+    s.lo = a.lo + b.lo;
+    if (s.lo < a.lo)
+	s.hi++;
+    return s;
+}
+
+cairo_uint64_t
+_cairo_uint64_sub (cairo_uint64_t a, cairo_uint64_t b)
+{
+    cairo_uint64_t	s;
+
+    s.hi = a.hi - b.hi;
+    s.lo = a.lo - b.lo;
+    if (s.lo > a.lo)
+	s.hi--;
+    return s;
+}
+
+#define uint32_lo(i)	((i) & 0xffff)
+#define uint32_hi(i)	((i) >> 16)
+#define uint32_carry16	((1) << 16)
+
+cairo_uint64_t
+_cairo_uint32x32_64_mul (uint32_t a, uint32_t b)
+{
+    cairo_uint64_t  s;
+
+    uint16_t	ah, al, bh, bl;
+    uint32_t	r0, r1, r2, r3;
+
+    al = uint32_lo (a);
+    ah = uint32_hi (a);
+    bl = uint32_lo (b);
+    bh = uint32_hi (b);
+
+    r0 = (uint32_t) al * bl;
+    r1 = (uint32_t) al * bh;
+    r2 = (uint32_t) ah * bl;
+    r3 = (uint32_t) ah * bh;
+
+    r1 += uint32_hi(r0);    /* no carry possible */
+    r1 += r2;		    /* but this can carry */
+    if (r1 < r2)	    /* check */
+	r3 += uint32_carry16;
+
+    s.hi = r3 + uint32_hi(r1);
+    s.lo = (uint32_lo (r1) << 16) + uint32_lo (r0);
+    return s;
+}
+
+cairo_int64_t
+_cairo_int32x32_64_mul (int32_t a, int32_t b)
+{
+    cairo_int64_t s;
+    s = _cairo_uint32x32_64_mul ((uint32_t) a, (uint32_t) b);
+    if (a < 0)
+	s.hi -= b;
+    if (b < 0)
+	s.hi -= a;
+    return s;
+}
+
+cairo_uint64_t
+_cairo_uint64_mul (cairo_uint64_t a, cairo_uint64_t b)
+{
+    cairo_uint64_t	s;
+
+    s = _cairo_uint32x32_64_mul (a.lo, b.lo);
+    s.hi += a.lo * b.hi + a.hi * b.lo;
+    return s;
+}
+
+cairo_uint64_t
+_cairo_uint64_lsl (cairo_uint64_t a, int shift)
+{
+    if (shift >= 32)
+    {
+	a.hi = a.lo;
+	a.lo = 0;
+	shift -= 32;
+    }
+    if (shift)
+    {
+	a.hi = a.hi << shift | a.lo >> (32 - shift);
+	a.lo = a.lo << shift;
+    }
+    return a;
+}
+
+cairo_uint64_t
+_cairo_uint64_rsl (cairo_uint64_t a, int shift)
+{
+    if (shift >= 32)
+    {
+	a.lo = a.hi;
+	a.hi = 0;
+	shift -= 32;
+    }
+    if (shift)
+    {
+	a.lo = a.lo >> shift | a.hi << (32 - shift);
+	a.hi = a.hi >> shift;
+    }
+    return a;
+}
+
+#define _cairo_uint32_rsa(a,n)	((uint32_t) (((int32_t) (a)) >> (n)))
+
+cairo_int64_t
+_cairo_uint64_rsa (cairo_int64_t a, int shift)
+{
+    if (shift >= 32)
+    {
+	a.lo = a.hi;
+	a.hi = _cairo_uint32_rsa (a.hi, 31);
+	shift -= 32;
+    }
+    if (shift)
+    {
+	a.lo = a.lo >> shift | a.hi << (32 - shift);
+	a.hi = _cairo_uint32_rsa (a.hi, shift);
+    }
+    return a;
+}
+
+int
+_cairo_uint64_lt (cairo_uint64_t a, cairo_uint64_t b)
+{
+    return (a.hi < b.hi ||
+	    (a.hi == b.hi && a.lo < b.lo));
+}
+
+int
+_cairo_uint64_eq (cairo_uint64_t a, cairo_uint64_t b)
+{
+    return a.hi == b.hi && a.lo == b.lo;
+}
+
+int
+_cairo_int64_lt (cairo_int64_t a, cairo_int64_t b)
+{
+    if (_cairo_int64_negative (a) && !_cairo_int64_negative (b))
+	return 1;
+    if (!_cairo_int64_negative (a) && _cairo_int64_negative (b))
+	return 0;
+    return _cairo_uint64_lt (a, b);
+}
+
+int
+_cairo_uint64_cmp (cairo_uint64_t a, cairo_uint64_t b)
+{
+    if (a.hi < b.hi)
+	return -1;
+    else if (a.hi > b.hi)
+	return 1;
+    else if (a.lo < b.lo)
+	return -1;
+    else if (a.lo > b.lo)
+	return 1;
+    else
+	return 0;
+}
+
+int
+_cairo_int64_cmp (cairo_int64_t a, cairo_int64_t b)
+{
+    if (_cairo_int64_negative (a) && !_cairo_int64_negative (b))
+	return -1;
+    if (!_cairo_int64_negative (a) && _cairo_int64_negative (b))
+	return 1;
+
+    return _cairo_uint64_cmp (a, b);
+}
+
+cairo_uint64_t
+_cairo_uint64_not (cairo_uint64_t a)
+{
+    a.lo = ~a.lo;
+    a.hi = ~a.hi;
+    return a;
+}
+
+cairo_uint64_t
+_cairo_uint64_negate (cairo_uint64_t a)
+{
+    a.lo = ~a.lo;
+    a.hi = ~a.hi;
+    if (++a.lo == 0)
+	++a.hi;
+    return a;
+}
+
+/*
+ * Simple bit-at-a-time divide.
+ */
+cairo_uquorem64_t
+_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den)
+{
+    cairo_uquorem64_t	qr;
+    cairo_uint64_t	bit;
+    cairo_uint64_t	quo;
+
+    bit = _cairo_uint32_to_uint64 (1);
+
+    /* normalize to make den >= num, but not overflow */
+    while (_cairo_uint64_lt (den, num) && (den.hi & 0x80000000) == 0)
+    {
+	bit = _cairo_uint64_lsl (bit, 1);
+	den = _cairo_uint64_lsl (den, 1);
+    }
+    quo = _cairo_uint32_to_uint64 (0);
+
+    /* generate quotient, one bit at a time */
+    while (bit.hi | bit.lo)
+    {
+	if (_cairo_uint64_le (den, num))
+	{
+	    num = _cairo_uint64_sub (num, den);
+	    quo = _cairo_uint64_add (quo, bit);
+	}
+	bit = _cairo_uint64_rsl (bit, 1);
+	den = _cairo_uint64_rsl (den, 1);
+    }
+    qr.quo = quo;
+    qr.rem = num;
+    return qr;
+}
+
+#endif /* !HAVE_UINT64_T */
+
+#if HAVE_UINT128_T
+cairo_uquorem128_t
+_cairo_uint128_divrem (cairo_uint128_t num, cairo_uint128_t den)
+{
+    cairo_uquorem128_t	qr;
+
+    qr.quo = num / den;
+    qr.rem = num % den;
+    return qr;
+}
+
+#else
+
+cairo_uint128_t
+_cairo_uint32_to_uint128 (uint32_t i)
+{
+    cairo_uint128_t	q;
+
+    q.lo = _cairo_uint32_to_uint64 (i);
+    q.hi = _cairo_uint32_to_uint64 (0);
+    return q;
+}
+
+cairo_int128_t
+_cairo_int32_to_int128 (int32_t i)
+{
+    cairo_int128_t	q;
+
+    q.lo = _cairo_int32_to_int64 (i);
+    q.hi = _cairo_int32_to_int64 (i < 0 ? -1 : 0);
+    return q;
+}
+
+cairo_uint128_t
+_cairo_uint64_to_uint128 (cairo_uint64_t i)
+{
+    cairo_uint128_t	q;
+
+    q.lo = i;
+    q.hi = _cairo_uint32_to_uint64 (0);
+    return q;
+}
+
+cairo_int128_t
+_cairo_int64_to_int128 (cairo_int64_t i)
+{
+    cairo_int128_t	q;
+
+    q.lo = i;
+    q.hi = _cairo_int32_to_int64 (_cairo_int64_negative(i) ? -1 : 0);
+    return q;
+}
+
+cairo_uint128_t
+_cairo_uint128_add (cairo_uint128_t a, cairo_uint128_t b)
+{
+    cairo_uint128_t	s;
+
+    s.hi = _cairo_uint64_add (a.hi, b.hi);
+    s.lo = _cairo_uint64_add (a.lo, b.lo);
+    if (_cairo_uint64_lt (s.lo, a.lo))
+	s.hi = _cairo_uint64_add (s.hi, _cairo_uint32_to_uint64 (1));
+    return s;
+}
+
+cairo_uint128_t
+_cairo_uint128_sub (cairo_uint128_t a, cairo_uint128_t b)
+{
+    cairo_uint128_t	s;
+
+    s.hi = _cairo_uint64_sub (a.hi, b.hi);
+    s.lo = _cairo_uint64_sub (a.lo, b.lo);
+    if (_cairo_uint64_gt (s.lo, a.lo))
+	s.hi = _cairo_uint64_sub (s.hi, _cairo_uint32_to_uint64(1));
+    return s;
+}
+
+cairo_uint128_t
+_cairo_uint64x64_128_mul (cairo_uint64_t a, cairo_uint64_t b)
+{
+    cairo_uint128_t	s;
+    uint32_t		ah, al, bh, bl;
+    cairo_uint64_t	r0, r1, r2, r3;
+
+    al = uint64_lo32 (a);
+    ah = uint64_hi32 (a);
+    bl = uint64_lo32 (b);
+    bh = uint64_hi32 (b);
+
+    r0 = _cairo_uint32x32_64_mul (al, bl);
+    r1 = _cairo_uint32x32_64_mul (al, bh);
+    r2 = _cairo_uint32x32_64_mul (ah, bl);
+    r3 = _cairo_uint32x32_64_mul (ah, bh);
+
+    r1 = _cairo_uint64_add (r1, uint64_hi (r0));    /* no carry possible */
+    r1 = _cairo_uint64_add (r1, r2);	    	    /* but this can carry */
+    if (_cairo_uint64_lt (r1, r2))		    /* check */
+	r3 = _cairo_uint64_add (r3, uint64_carry32);
+
+    s.hi = _cairo_uint64_add (r3, uint64_hi(r1));
+    s.lo = _cairo_uint64_add (uint64_shift32 (r1),
+				uint64_lo (r0));
+    return s;
+}
+
+cairo_int128_t
+_cairo_int64x64_128_mul (cairo_int64_t a, cairo_int64_t b)
+{
+    cairo_int128_t  s;
+    s = _cairo_uint64x64_128_mul (_cairo_int64_to_uint64(a),
+				  _cairo_int64_to_uint64(b));
+    if (_cairo_int64_negative (a))
+	s.hi = _cairo_uint64_sub (s.hi,
+				  _cairo_int64_to_uint64 (b));
+    if (_cairo_int64_negative (b))
+	s.hi = _cairo_uint64_sub (s.hi,
+				  _cairo_int64_to_uint64 (a));
+    return s;
+}
+
+cairo_uint128_t
+_cairo_uint128_mul (cairo_uint128_t a, cairo_uint128_t b)
+{
+    cairo_uint128_t	s;
+
+    s = _cairo_uint64x64_128_mul (a.lo, b.lo);
+    s.hi = _cairo_uint64_add (s.hi,
+				_cairo_uint64_mul (a.lo, b.hi));
+    s.hi = _cairo_uint64_add (s.hi,
+				_cairo_uint64_mul (a.hi, b.lo));
+    return s;
+}
+
+cairo_uint128_t
+_cairo_uint128_lsl (cairo_uint128_t a, int shift)
+{
+    if (shift >= 64)
+    {
+	a.hi = a.lo;
+	a.lo = _cairo_uint32_to_uint64 (0);
+	shift -= 64;
+    }
+    if (shift)
+    {
+	a.hi = _cairo_uint64_add (_cairo_uint64_lsl (a.hi, shift),
+				    _cairo_uint64_rsl (a.lo, (64 - shift)));
+	a.lo = _cairo_uint64_lsl (a.lo, shift);
+    }
+    return a;
+}
+
+cairo_uint128_t
+_cairo_uint128_rsl (cairo_uint128_t a, int shift)
+{
+    if (shift >= 64)
+    {
+	a.lo = a.hi;
+	a.hi = _cairo_uint32_to_uint64 (0);
+	shift -= 64;
+    }
+    if (shift)
+    {
+	a.lo = _cairo_uint64_add (_cairo_uint64_rsl (a.lo, shift),
+				    _cairo_uint64_lsl (a.hi, (64 - shift)));
+	a.hi = _cairo_uint64_rsl (a.hi, shift);
+    }
+    return a;
+}
+
+cairo_uint128_t
+_cairo_uint128_rsa (cairo_int128_t a, int shift)
+{
+    if (shift >= 64)
+    {
+	a.lo = a.hi;
+	a.hi = _cairo_uint64_rsa (a.hi, 64-1);
+	shift -= 64;
+    }
+    if (shift)
+    {
+	a.lo = _cairo_uint64_add (_cairo_uint64_rsl (a.lo, shift),
+				    _cairo_uint64_lsl (a.hi, (64 - shift)));
+	a.hi = _cairo_uint64_rsa (a.hi, shift);
+    }
+    return a;
+}
+
+int
+_cairo_uint128_lt (cairo_uint128_t a, cairo_uint128_t b)
+{
+    return (_cairo_uint64_lt (a.hi, b.hi) ||
+	    (_cairo_uint64_eq (a.hi, b.hi) &&
+	     _cairo_uint64_lt (a.lo, b.lo)));
+}
+
+int
+_cairo_int128_lt (cairo_int128_t a, cairo_int128_t b)
+{
+    if (_cairo_int128_negative (a) && !_cairo_int128_negative (b))
+	return 1;
+    if (!_cairo_int128_negative (a) && _cairo_int128_negative (b))
+	return 0;
+    return _cairo_uint128_lt (a, b);
+}
+
+int
+_cairo_uint128_cmp (cairo_uint128_t a, cairo_uint128_t b)
+{
+    int cmp;
+
+    cmp = _cairo_uint64_cmp (a.hi, b.hi);
+    if (cmp)
+	return cmp;
+    return _cairo_uint64_cmp (a.lo, b.lo);
+}
+
+int
+_cairo_int128_cmp (cairo_int128_t a, cairo_int128_t b)
+{
+    if (_cairo_int128_negative (a) && !_cairo_int128_negative (b))
+	return -1;
+    if (!_cairo_int128_negative (a) && _cairo_int128_negative (b))
+	return 1;
+
+    return _cairo_uint128_cmp (a, b);
+}
+
+int
+_cairo_uint128_eq (cairo_uint128_t a, cairo_uint128_t b)
+{
+    return (_cairo_uint64_eq (a.hi, b.hi) &&
+	    _cairo_uint64_eq (a.lo, b.lo));
+}
+
+#if HAVE_UINT64_T
+#define _cairo_msbset64(q)  (q & ((uint64_t) 1 << 63))
+#else
+#define _cairo_msbset64(q)  (q.hi & ((uint32_t) 1 << 31))
+#endif
+
+cairo_uquorem128_t
+_cairo_uint128_divrem (cairo_uint128_t num, cairo_uint128_t den)
+{
+    cairo_uquorem128_t	qr;
+    cairo_uint128_t	bit;
+    cairo_uint128_t	quo;
+
+    bit = _cairo_uint32_to_uint128 (1);
+
+    /* normalize to make den >= num, but not overflow */
+    while (_cairo_uint128_lt (den, num) && !_cairo_msbset64(den.hi))
+    {
+	bit = _cairo_uint128_lsl (bit, 1);
+	den = _cairo_uint128_lsl (den, 1);
+    }
+    quo = _cairo_uint32_to_uint128 (0);
+
+    /* generate quotient, one bit at a time */
+    while (_cairo_uint128_ne (bit, _cairo_uint32_to_uint128(0)))
+    {
+	if (_cairo_uint128_le (den, num))
+	{
+	    num = _cairo_uint128_sub (num, den);
+	    quo = _cairo_uint128_add (quo, bit);
+	}
+	bit = _cairo_uint128_rsl (bit, 1);
+	den = _cairo_uint128_rsl (den, 1);
+    }
+    qr.quo = quo;
+    qr.rem = num;
+    return qr;
+}
+
+cairo_uint128_t
+_cairo_uint128_negate (cairo_uint128_t a)
+{
+    a.lo = _cairo_uint64_not (a.lo);
+    a.hi = _cairo_uint64_not (a.hi);
+    return _cairo_uint128_add (a, _cairo_uint32_to_uint128 (1));
+}
+
+cairo_uint128_t
+_cairo_uint128_not (cairo_uint128_t a)
+{
+    a.lo = _cairo_uint64_not (a.lo);
+    a.hi = _cairo_uint64_not (a.hi);
+    return a;
+}
+
+#endif /* !HAVE_UINT128_T */
+
+cairo_quorem128_t
+_cairo_int128_divrem (cairo_int128_t num, cairo_int128_t den)
+{
+    int			num_neg = _cairo_int128_negative (num);
+    int			den_neg = _cairo_int128_negative (den);
+    cairo_uquorem128_t	uqr;
+    cairo_quorem128_t	qr;
+
+    if (num_neg)
+	num = _cairo_int128_negate (num);
+    if (den_neg)
+	den = _cairo_int128_negate (den);
+    uqr = _cairo_uint128_divrem (num, den);
+    if (num_neg)
+	qr.rem = _cairo_int128_negate (uqr.rem);
+    else
+	qr.rem = uqr.rem;
+    if (num_neg != den_neg)
+	qr.quo = _cairo_int128_negate (uqr.quo);
+    else
+	qr.quo = uqr.quo;
+    return qr;
+}
+
+/**
+ * _cairo_uint_96by64_32x64_divrem:
+ *
+ * Compute a 32 bit quotient and 64 bit remainder of a 96 bit unsigned
+ * dividend and 64 bit divisor.  If the quotient doesn't fit into 32
+ * bits then the returned remainder is equal to the divisor, and the
+ * quotient is the largest representable 64 bit integer.  It is an
+ * error to call this function with the high 32 bits of @num being
+ * non-zero.
+ **/
+cairo_uquorem64_t
+_cairo_uint_96by64_32x64_divrem (cairo_uint128_t num,
+				 cairo_uint64_t den)
+{
+    cairo_uquorem64_t result;
+    cairo_uint64_t B = _cairo_uint32s_to_uint64 (1, 0);
+
+    /* These are the high 64 bits of the *96* bit numerator.  We're
+     * going to represent the numerator as xB + y, where x is a 64,
+     * and y is a 32 bit number. */
+    cairo_uint64_t x = _cairo_uint128_to_uint64 (_cairo_uint128_rsl(num, 32));
+
+    /* Initialise the result to indicate overflow. */
+    result.quo = _cairo_uint32s_to_uint64 (-1U, -1U);
+    result.rem = den;
+
+    /* Don't bother if the quotient is going to overflow. */
+    if (_cairo_uint64_ge (x, den)) {
+	return /* overflow */ result;
+    }
+
+    if (_cairo_uint64_lt (x, B)) {
+	/* When the final quotient is known to fit in 32 bits, then
+	 * num < 2^64 if and only if den < 2^32. */
+	return _cairo_uint64_divrem (_cairo_uint128_to_uint64 (num), den);
+    }
+    else {
+	/* Denominator is >= 2^32. the numerator is >= 2^64, and the
+	 * division won't overflow: need two divrems.  Write the
+	 * numerator and denominator as
+	 *
+	 *	num = xB + y		x : 64 bits, y : 32 bits
+	 *	den = uB + v		u, v : 32 bits
+	 */
+	uint32_t y = _cairo_uint128_to_uint32 (num);
+	uint32_t u = uint64_hi32 (den);
+	uint32_t v = _cairo_uint64_to_uint32 (den);
+
+	/* Compute a lower bound approximate quotient of num/den
+	 * from x/(u+1).  Then we have
+	 *
+	 * x	= q(u+1) + r	; q : 32 bits, r <= u : 32 bits.
+	 *
+	 * xB + y	= q(u+1)B	+ (rB+y)
+	 *		= q(uB + B + v - v) + (rB+y)
+	 *		= q(uB + v)	+ qB - qv + (rB+y)
+	 *		= q(uB + v)	+ q(B-v) + (rB+y)
+	 *
+	 * The true quotient of num/den then is q plus the
+	 * contribution of q(B-v) + (rB+y).  The main contribution
+	 * comes from the term q(B-v), with the term (rB+y) only
+	 * contributing at most one part.
+	 *
+	 * The term q(B-v) must fit into 64 bits, since q fits into 32
+	 * bits on account of being a lower bound to the true
+	 * quotient, and as B-v <= 2^32, we may safely use a single
+	 * 64/64 bit division to find its contribution. */
+
+	cairo_uquorem64_t quorem;
+	cairo_uint64_t remainder; /* will contain final remainder */
+	uint32_t quotient;	/* will contain final quotient. */
+	uint32_t q;
+	uint32_t r;
+
+	/* Approximate quotient by dividing the high 64 bits of num by
+	 * u+1. Watch out for overflow of u+1. */
+	if (u+1) {
+	    quorem = _cairo_uint64_divrem (x, _cairo_uint32_to_uint64 (u+1));
+	    q = _cairo_uint64_to_uint32 (quorem.quo);
+	    r = _cairo_uint64_to_uint32 (quorem.rem);
+	}
+	else {
+	    q = uint64_hi32 (x);
+	    r = _cairo_uint64_to_uint32 (x);
+	}
+	quotient = q;
+
+	/* Add the main term's contribution to quotient.  Note B-v =
+	 * -v as an uint32 (unless v = 0) */
+	if (v)
+	    quorem = _cairo_uint64_divrem (_cairo_uint32x32_64_mul (q, -v), den);
+	else
+	    quorem = _cairo_uint64_divrem (_cairo_uint32s_to_uint64 (q, 0), den);
+	quotient += _cairo_uint64_to_uint32 (quorem.quo);
+
+	/* Add the contribution of the subterm and start computing the
+	 * true remainder. */
+	remainder = _cairo_uint32s_to_uint64 (r, y);
+	if (_cairo_uint64_ge (remainder, den)) {
+	    remainder = _cairo_uint64_sub (remainder, den);
+	    quotient++;
+	}
+
+	/* Add the contribution of the main term's remainder. The
+	 * funky test here checks that remainder + main_rem >= den,
+	 * taking into account overflow of the addition. */
+	remainder = _cairo_uint64_add (remainder, quorem.rem);
+	if (_cairo_uint64_ge (remainder, den) ||
+	    _cairo_uint64_lt (remainder, quorem.rem))
+	{
+	    remainder = _cairo_uint64_sub (remainder, den);
+	    quotient++;
+	}
+
+	result.quo = _cairo_uint32_to_uint64 (quotient);
+	result.rem = remainder;
+    }
+    return result;
+}
+
+cairo_quorem64_t
+_cairo_int_96by64_32x64_divrem (cairo_int128_t num, cairo_int64_t den)
+{
+    int			num_neg = _cairo_int128_negative (num);
+    int			den_neg = _cairo_int64_negative (den);
+    cairo_uint64_t	nonneg_den;
+    cairo_uquorem64_t	uqr;
+    cairo_quorem64_t	qr;
+
+    if (num_neg)
+	num = _cairo_int128_negate (num);
+    if (den_neg)
+	nonneg_den = _cairo_int64_negate (den);
+    else
+	nonneg_den = den;
+
+    uqr = _cairo_uint_96by64_32x64_divrem (num, nonneg_den);
+    if (_cairo_uint64_eq (uqr.rem, nonneg_den)) {
+	/* bail on overflow. */
+	qr.quo = _cairo_uint32s_to_uint64 (0x7FFFFFFF, -1U);
+	qr.rem = den;
+	return qr;
+    }
+
+    if (num_neg)
+	qr.rem = _cairo_int64_negate (uqr.rem);
+    else
+	qr.rem = uqr.rem;
+    if (num_neg != den_neg)
+	qr.quo = _cairo_int64_negate (uqr.quo);
+    else
+	qr.quo = uqr.quo;
+    return qr;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-win32.h b/libs/cairo-1.16.0/src/cairo-win32.h
new file mode 100644
index 0000000..db4cac6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-win32.h
@@ -0,0 +1,116 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ */
+
+#ifndef _CAIRO_WIN32_H_
+#define _CAIRO_WIN32_H_
+
+#include "cairo.h"
+
+#if CAIRO_HAS_WIN32_SURFACE
+
+#include <windows.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_win32_surface_create (HDC hdc);
+
+cairo_public cairo_surface_t *
+cairo_win32_surface_create_with_format (HDC hdc,
+                                        cairo_format_t format);
+
+cairo_public cairo_surface_t *
+cairo_win32_printing_surface_create (HDC hdc);
+
+cairo_public cairo_surface_t *
+cairo_win32_surface_create_with_ddb (HDC hdc,
+                                     cairo_format_t format,
+                                     int width,
+                                     int height);
+
+cairo_public cairo_surface_t *
+cairo_win32_surface_create_with_dib (cairo_format_t format,
+                                     int width,
+                                     int height);
+
+cairo_public HDC
+cairo_win32_surface_get_dc (cairo_surface_t *surface);
+
+cairo_public cairo_surface_t *
+cairo_win32_surface_get_image (cairo_surface_t *surface);
+
+#if CAIRO_HAS_WIN32_FONT
+
+/*
+ * Win32 font support
+ */
+
+cairo_public cairo_font_face_t *
+cairo_win32_font_face_create_for_logfontw (LOGFONTW *logfont);
+
+cairo_public cairo_font_face_t *
+cairo_win32_font_face_create_for_hfont (HFONT font);
+
+cairo_public cairo_font_face_t *
+cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font);
+
+cairo_public cairo_status_t
+cairo_win32_scaled_font_select_font (cairo_scaled_font_t *scaled_font,
+				     HDC                  hdc);
+
+cairo_public void
+cairo_win32_scaled_font_done_font (cairo_scaled_font_t *scaled_font);
+
+cairo_public double
+cairo_win32_scaled_font_get_metrics_factor (cairo_scaled_font_t *scaled_font);
+
+cairo_public void
+cairo_win32_scaled_font_get_logical_to_device (cairo_scaled_font_t *scaled_font,
+					       cairo_matrix_t *logical_to_device);
+
+cairo_public void
+cairo_win32_scaled_font_get_device_to_logical (cairo_scaled_font_t *scaled_font,
+					       cairo_matrix_t *device_to_logical);
+
+#endif /* CAIRO_HAS_WIN32_FONT */
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_WIN32_SURFACE */
+# error Cairo was not compiled with support for the win32 backend
+#endif /* CAIRO_HAS_WIN32_SURFACE */
+
+#endif /* _CAIRO_WIN32_H_ */
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-connection-core.c b/libs/cairo-1.16.0/src/cairo-xcb-connection-core.c
new file mode 100644
index 0000000..e01dc1a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-connection-core.c
@@ -0,0 +1,300 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+
+#include <xcb/xcbext.h>
+
+xcb_pixmap_t
+_cairo_xcb_connection_create_pixmap (cairo_xcb_connection_t *connection,
+				     uint8_t depth,
+				     xcb_drawable_t drawable,
+				     uint16_t width,
+				     uint16_t height)
+{
+    xcb_pixmap_t pixmap = _cairo_xcb_connection_get_xid (connection);
+
+    assert (width > 0);
+    assert (height > 0);
+    xcb_create_pixmap (connection->xcb_connection,
+		       depth, pixmap, drawable,
+		       width, height);
+    return pixmap;
+}
+
+void
+_cairo_xcb_connection_free_pixmap (cairo_xcb_connection_t *connection,
+				   xcb_pixmap_t pixmap)
+{
+    xcb_free_pixmap (connection->xcb_connection, pixmap);
+    _cairo_xcb_connection_put_xid (connection, pixmap);
+}
+
+xcb_gcontext_t
+_cairo_xcb_connection_create_gc (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t drawable,
+				 uint32_t value_mask,
+				 uint32_t *values)
+{
+    xcb_gcontext_t gc = _cairo_xcb_connection_get_xid (connection);
+    xcb_create_gc (connection->xcb_connection, gc, drawable,
+		   value_mask, values);
+    return gc;
+}
+
+void
+_cairo_xcb_connection_free_gc (cairo_xcb_connection_t *connection,
+			       xcb_gcontext_t gc)
+{
+    xcb_free_gc (connection->xcb_connection, gc);
+    _cairo_xcb_connection_put_xid (connection, gc);
+}
+
+void
+_cairo_xcb_connection_change_gc (cairo_xcb_connection_t *connection,
+				 xcb_gcontext_t gc,
+				 uint32_t value_mask,
+				 uint32_t *values)
+{
+    xcb_change_gc (connection->xcb_connection, gc,
+		   value_mask, values);
+}
+
+void
+_cairo_xcb_connection_copy_area (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t src,
+				 xcb_drawable_t dst,
+				 xcb_gcontext_t gc,
+				 int16_t src_x,
+				 int16_t src_y,
+				 int16_t dst_x,
+				 int16_t dst_y,
+				 uint16_t width,
+				 uint16_t height)
+{
+    xcb_copy_area (connection->xcb_connection, src, dst, gc,
+		   src_x, src_y, dst_x, dst_y, width, height);
+}
+
+void
+_cairo_xcb_connection_poly_fill_rectangle (cairo_xcb_connection_t *connection,
+					   xcb_drawable_t dst,
+					   xcb_gcontext_t gc,
+					   uint32_t num_rectangles,
+					   xcb_rectangle_t *rectangles)
+{
+    xcb_poly_fill_rectangle (connection->xcb_connection, dst, gc,
+			     num_rectangles, rectangles);
+}
+
+void
+_cairo_xcb_connection_put_image (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t dst,
+				 xcb_gcontext_t gc,
+				 uint16_t width,
+				 uint16_t height,
+				 int16_t dst_x,
+				 int16_t dst_y,
+				 uint8_t depth,
+				 uint32_t stride,
+				 void *data)
+{
+    const uint32_t req_size = 18;
+    uint32_t length = height * stride;
+    uint32_t len = (req_size + length) >> 2;
+
+    if (len < connection->maximum_request_length) {
+	xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP,
+		       dst, gc, width, height, dst_x, dst_y, 0, depth,
+		       length, data);
+    } else {
+	int rows = (connection->maximum_request_length - req_size - 4) / stride;
+	if (rows > 0) {
+	    do {
+		if (rows > height)
+		    rows = height;
+
+		length = rows * stride;
+
+		xcb_put_image (connection->xcb_connection, XCB_IMAGE_FORMAT_Z_PIXMAP,
+			       dst, gc, width, rows, dst_x, dst_y, 0, depth, length, data);
+
+		height -= rows;
+		dst_y += rows;
+		data = (char *) data + length;
+	    } while (height);
+	} else {
+	    ASSERT_NOT_REACHED;
+	}
+    }
+}
+
+static void
+_cairo_xcb_connection_do_put_subimage (cairo_xcb_connection_t *connection,
+				       xcb_drawable_t dst,
+				       xcb_gcontext_t gc,
+				       int16_t src_x,
+				       int16_t src_y,
+				       uint16_t width,
+				       uint16_t height,
+				       uint16_t cpp,
+				       int stride,
+				       int16_t dst_x,
+				       int16_t dst_y,
+				       uint8_t depth,
+				       void *_data)
+{
+    xcb_protocol_request_t xcb_req = {
+	0 /* count */,
+	0 /* ext */,
+	XCB_PUT_IMAGE /* opcode */,
+	1 /* isvoid (doesn't cause a reply) */
+    };
+    xcb_put_image_request_t req;
+    struct iovec vec_stack[CAIRO_STACK_ARRAY_LENGTH (struct iovec)];
+    struct iovec *vec = vec_stack;
+    uint32_t len = 0;
+    uint8_t *data = _data;
+    int n = 3;
+    /* Two extra entries are needed for xcb, two for us */
+    int entries_needed = height + 2 + 2;
+
+    req.format = XCB_IMAGE_FORMAT_Z_PIXMAP;
+    req.drawable = dst;
+    req.gc = gc;
+    req.width = width;
+    req.height = height;
+    req.dst_x = dst_x;
+    req.dst_y = dst_y;
+    req.left_pad = 0;
+    req.depth = depth;
+    req.pad0[0] = 0;
+    req.pad0[1] = 0;
+
+    if (entries_needed > ARRAY_LENGTH (vec_stack)) {
+	vec = _cairo_malloc_ab (entries_needed, sizeof (struct iovec));
+	if (unlikely (vec == NULL)) {
+	    /* XXX loop over ARRAY_LENGTH (vec_stack) */
+	    return;
+	}
+    }
+
+    data += src_y * stride + src_x * cpp;
+    /* vec[1] will be used in XCB if it has to use BigRequests or insert a sync,
+     * vec[0] is used if the internal queue needs to be flushed. */
+    vec[2].iov_base = (char *) &req;
+    vec[2].iov_len = sizeof (req);
+
+    /* Now comes the actual data */
+    while (height--) {
+	vec[n].iov_base = data;
+	vec[n].iov_len = cpp * width;
+	len += cpp * width;
+	data += stride;
+	n++;
+    }
+
+    /* And again some padding */
+    vec[n].iov_base = 0;
+    vec[n].iov_len = -len & 3;
+    n++;
+
+    /* For efficiency reasons, this functions writes the request "directly" to
+     * the xcb connection to avoid having to copy the data around. */
+    assert (n == entries_needed);
+    xcb_req.count = n - 2;
+    xcb_send_request (connection->xcb_connection, 0, &vec[2], &xcb_req);
+
+    if (vec != vec_stack)
+	free (vec);
+}
+
+void
+_cairo_xcb_connection_put_subimage (cairo_xcb_connection_t *connection,
+				    xcb_drawable_t dst,
+				    xcb_gcontext_t gc,
+				    int16_t src_x,
+				    int16_t src_y,
+				    uint16_t width,
+				    uint16_t height,
+				    uint16_t cpp,
+				    int stride,
+				    int16_t dst_x,
+				    int16_t dst_y,
+				    uint8_t depth,
+				    void *_data)
+{
+    const uint32_t req_size = sizeof(xcb_put_image_request_t);
+    uint32_t length = height * cpp * width;
+    uint32_t len = (req_size + length) >> 2;
+
+    if (len < connection->maximum_request_length) {
+	_cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y,
+			width, height, cpp, stride, dst_x, dst_y, depth, _data);
+    } else {
+	int rows = (connection->maximum_request_length - req_size - 4) / (cpp * width);
+	if (rows > 0) {
+	    do {
+		if (rows > height)
+		    rows = height;
+
+		_cairo_xcb_connection_do_put_subimage (connection, dst, gc, src_x, src_y,
+			width, rows, cpp, stride, dst_x, dst_y, depth, _data);
+
+		height -= rows;
+		dst_y += rows;
+		_data = (char *) _data + stride * rows;
+	    } while (height);
+	} else {
+	    ASSERT_NOT_REACHED;
+	}
+    }
+}
+
+xcb_get_image_reply_t *
+_cairo_xcb_connection_get_image (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t src,
+				 int16_t src_x,
+				 int16_t src_y,
+				 uint16_t width,
+				 uint16_t height)
+{
+    return xcb_get_image_reply (connection->xcb_connection,
+				xcb_get_image (connection->xcb_connection,
+					       XCB_IMAGE_FORMAT_Z_PIXMAP,
+					       src,
+					       src_x, src_y,
+					       width, height,
+					       (uint32_t) -1),
+				NULL);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-connection-render.c b/libs/cairo-1.16.0/src/cairo-xcb-connection-render.c
new file mode 100644
index 0000000..6111965
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-connection-render.c
@@ -0,0 +1,299 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+
+#include <xcb/xcbext.h>
+
+void
+_cairo_xcb_connection_render_create_picture (cairo_xcb_connection_t  *connection,
+					     xcb_render_picture_t     picture,
+					     xcb_drawable_t           drawable,
+					     xcb_render_pictformat_t  format,
+					     uint32_t                 value_mask,
+					     uint32_t	             *value_list)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_create_picture (connection->xcb_connection, picture, drawable,
+			       format, value_mask, value_list);
+}
+
+void
+_cairo_xcb_connection_render_change_picture (cairo_xcb_connection_t     *connection,
+					     xcb_render_picture_t  picture,
+					     uint32_t              value_mask,
+					     uint32_t             *value_list)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_change_picture (connection->xcb_connection, picture,
+			       value_mask, value_list);
+}
+
+void
+_cairo_xcb_connection_render_set_picture_clip_rectangles (cairo_xcb_connection_t      *connection,
+							  xcb_render_picture_t   picture,
+							  int16_t                clip_x_origin,
+							  int16_t                clip_y_origin,
+							  uint32_t               rectangles_len,
+							  xcb_rectangle_t *rectangles)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_set_picture_clip_rectangles (connection->xcb_connection, picture,
+					    clip_x_origin, clip_y_origin,
+					    rectangles_len, rectangles);
+}
+
+void
+_cairo_xcb_connection_render_free_picture (cairo_xcb_connection_t *connection,
+					   xcb_render_picture_t  picture)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_free_picture (connection->xcb_connection, picture);
+    _cairo_xcb_connection_put_xid (connection, picture);
+}
+
+void
+_cairo_xcb_connection_render_composite (cairo_xcb_connection_t     *connection,
+					uint8_t               op,
+					xcb_render_picture_t  src,
+					xcb_render_picture_t  mask,
+					xcb_render_picture_t  dst,
+					int16_t               src_x,
+					int16_t               src_y,
+					int16_t               mask_x,
+					int16_t               mask_y,
+					int16_t               dst_x,
+					int16_t               dst_y,
+					uint16_t              width,
+					uint16_t              height)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE);
+    xcb_render_composite (connection->xcb_connection, op, src, mask, dst,
+			  src_x, src_y, mask_x, mask_y, dst_x, dst_y, width, height);
+}
+
+void
+_cairo_xcb_connection_render_trapezoids (cairo_xcb_connection_t *connection,
+					 uint8_t                       op,
+					 xcb_render_picture_t          src,
+					 xcb_render_picture_t          dst,
+					 xcb_render_pictformat_t       mask_format,
+					 int16_t                       src_x,
+					 int16_t                       src_y,
+					 uint32_t                      traps_len,
+					 xcb_render_trapezoid_t *traps)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS);
+    xcb_render_trapezoids (connection->xcb_connection, op, src, dst,
+			   mask_format, src_x, src_y, traps_len, traps);
+}
+
+void
+_cairo_xcb_connection_render_create_glyph_set (cairo_xcb_connection_t	*connection,
+					       xcb_render_glyphset_t	 id,
+					       xcb_render_pictformat_t  format)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_create_glyph_set (connection->xcb_connection, id, format);
+}
+
+void
+_cairo_xcb_connection_render_free_glyph_set (cairo_xcb_connection_t      *connection,
+					     xcb_render_glyphset_t  glyphset)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_free_glyph_set (connection->xcb_connection, glyphset);
+    _cairo_xcb_connection_put_xid (connection, glyphset);
+}
+
+void
+_cairo_xcb_connection_render_add_glyphs (cairo_xcb_connection_t             *connection,
+					 xcb_render_glyphset_t         glyphset,
+					 uint32_t                      num_glyphs,
+					 uint32_t               *glyphs_id,
+					 xcb_render_glyphinfo_t *glyphs,
+					 uint32_t                      data_len,
+					 uint8_t                *data)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_add_glyphs (connection->xcb_connection, glyphset, num_glyphs,
+				   glyphs_id, glyphs, data_len, data);
+}
+
+void
+_cairo_xcb_connection_render_free_glyphs (cairo_xcb_connection_t         *connection,
+					  xcb_render_glyphset_t     glyphset,
+					  uint32_t                  num_glyphs,
+					  xcb_render_glyph_t *glyphs)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_free_glyphs (connection->xcb_connection, glyphset, num_glyphs, glyphs);
+}
+
+void
+_cairo_xcb_connection_render_composite_glyphs_8 (cairo_xcb_connection_t        *connection,
+						 uint8_t                  op,
+						 xcb_render_picture_t     src,
+						 xcb_render_picture_t     dst,
+						 xcb_render_pictformat_t  mask_format,
+						 xcb_render_glyphset_t    glyphset,
+						 int16_t                  src_x,
+						 int16_t                  src_y,
+						 uint32_t                 glyphcmds_len,
+						 uint8_t           *glyphcmds)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_composite_glyphs_8 (connection->xcb_connection, op, src, dst, mask_format,
+				   glyphset, src_x, src_y, glyphcmds_len, glyphcmds);
+}
+
+void
+_cairo_xcb_connection_render_composite_glyphs_16 (cairo_xcb_connection_t        *connection,
+						  uint8_t                  op,
+						  xcb_render_picture_t     src,
+						  xcb_render_picture_t     dst,
+						  xcb_render_pictformat_t  mask_format,
+						  xcb_render_glyphset_t    glyphset,
+						  int16_t                  src_x,
+						  int16_t                  src_y,
+						  uint32_t                 glyphcmds_len,
+						  uint8_t           *glyphcmds)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_composite_glyphs_16 (connection->xcb_connection, op, src, dst, mask_format,
+				    glyphset, src_x, src_y, glyphcmds_len, glyphcmds);
+}
+
+void
+_cairo_xcb_connection_render_composite_glyphs_32 (cairo_xcb_connection_t        *connection,
+						  uint8_t                  op,
+						  xcb_render_picture_t     src,
+						  xcb_render_picture_t     dst,
+						  xcb_render_pictformat_t  mask_format,
+						  xcb_render_glyphset_t    glyphset,
+						  int16_t                  src_x,
+						  int16_t                  src_y,
+						  uint32_t                 glyphcmds_len,
+						  uint8_t           *glyphcmds)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_RENDER);
+    xcb_render_composite_glyphs_32 (connection->xcb_connection, op, src, dst, mask_format,
+				    glyphset, src_x, src_y, glyphcmds_len, glyphcmds);
+}
+
+void
+_cairo_xcb_connection_render_fill_rectangles (cairo_xcb_connection_t      *connection,
+					      uint8_t                op,
+					      xcb_render_picture_t   dst,
+					      xcb_render_color_t     color,
+					      uint32_t               num_rects,
+					      xcb_rectangle_t *rects)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES);
+    xcb_render_fill_rectangles (connection->xcb_connection, op, dst, color,
+				num_rects, rects);
+}
+
+void
+_cairo_xcb_connection_render_set_picture_transform (cairo_xcb_connection_t       *connection,
+						    xcb_render_picture_t    picture,
+						    xcb_render_transform_t  *transform)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM);
+    xcb_render_set_picture_transform (connection->xcb_connection, picture, *transform);
+}
+
+void
+_cairo_xcb_connection_render_set_picture_filter (cairo_xcb_connection_t         *connection,
+						 xcb_render_picture_t      picture,
+						 uint16_t                  filter_len,
+						 char               *filter)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_FILTERS);
+    xcb_render_set_picture_filter (connection->xcb_connection, picture,
+				   filter_len, filter, 0, NULL);
+}
+
+void
+_cairo_xcb_connection_render_create_solid_fill (cairo_xcb_connection_t     *connection,
+						xcb_render_picture_t  picture,
+						xcb_render_color_t    color)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_GRADIENTS);
+    xcb_render_create_solid_fill (connection->xcb_connection, picture, color);
+}
+
+void
+_cairo_xcb_connection_render_create_linear_gradient (cairo_xcb_connection_t         *connection,
+						     xcb_render_picture_t      picture,
+						     xcb_render_pointfix_t     p1,
+						     xcb_render_pointfix_t     p2,
+						     uint32_t                  num_stops,
+						     xcb_render_fixed_t *stops,
+						     xcb_render_color_t *colors)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_GRADIENTS);
+    xcb_render_create_linear_gradient (connection->xcb_connection, picture,
+				       p1, p2, num_stops, stops, colors);
+}
+
+void
+_cairo_xcb_connection_render_create_radial_gradient (cairo_xcb_connection_t         *connection,
+						     xcb_render_picture_t      picture,
+						     xcb_render_pointfix_t     inner,
+						     xcb_render_pointfix_t     outer,
+						     xcb_render_fixed_t        inner_radius,
+						     xcb_render_fixed_t        outer_radius,
+						     uint32_t                  num_stops,
+						     xcb_render_fixed_t *stops,
+						     xcb_render_color_t *colors)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_GRADIENTS);
+    xcb_render_create_radial_gradient (connection->xcb_connection, picture,
+				       inner, outer, inner_radius, outer_radius,
+				       num_stops, stops, colors);
+}
+
+void
+_cairo_xcb_connection_render_create_conical_gradient (cairo_xcb_connection_t         *connection,
+						      xcb_render_picture_t      picture,
+						      xcb_render_pointfix_t     center,
+						      xcb_render_fixed_t        angle,
+						      uint32_t                  num_stops,
+						      xcb_render_fixed_t *stops,
+						      xcb_render_color_t *colors)
+{
+    assert (connection->flags & CAIRO_XCB_RENDER_HAS_GRADIENTS);
+    xcb_render_create_conical_gradient (connection->xcb_connection, picture,
+				       center, angle, num_stops, stops, colors);
+}
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-connection-shm.c b/libs/cairo-1.16.0/src/cairo-xcb-connection-shm.c
new file mode 100644
index 0000000..7720bbb
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-connection-shm.c
@@ -0,0 +1,115 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+
+#include "cairo-xcb-private.h"
+
+#include <xcb/xcbext.h>
+#include <xcb/shm.h>
+
+uint32_t
+_cairo_xcb_connection_shm_attach (cairo_xcb_connection_t *connection,
+				  uint32_t id,
+				  cairo_bool_t readonly)
+{
+    uint32_t segment = _cairo_xcb_connection_get_xid (connection);
+    assert (connection->flags & CAIRO_XCB_HAS_SHM);
+    xcb_shm_attach (connection->xcb_connection, segment, id, readonly);
+    return segment;
+}
+
+void
+_cairo_xcb_connection_shm_put_image (cairo_xcb_connection_t *connection,
+				     xcb_drawable_t dst,
+				     xcb_gcontext_t gc,
+				     uint16_t total_width,
+				     uint16_t total_height,
+				     int16_t src_x,
+				     int16_t src_y,
+				     uint16_t width,
+				     uint16_t height,
+				     int16_t dst_x,
+				     int16_t dst_y,
+				     uint8_t depth,
+				     uint32_t shm,
+				     uint32_t offset)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_SHM);
+    xcb_shm_put_image (connection->xcb_connection, dst, gc, total_width, total_height,
+		       src_x, src_y, width, height, dst_x, dst_y, depth,
+		       XCB_IMAGE_FORMAT_Z_PIXMAP, 0, shm, offset);
+}
+
+cairo_status_t
+_cairo_xcb_connection_shm_get_image (cairo_xcb_connection_t *connection,
+				     xcb_drawable_t src,
+				     int16_t src_x,
+				     int16_t src_y,
+				     uint16_t width,
+				     uint16_t height,
+				     uint32_t shmseg,
+				     uint32_t offset)
+{
+    xcb_shm_get_image_reply_t *reply;
+
+    assert (connection->flags & CAIRO_XCB_HAS_SHM);
+    reply = xcb_shm_get_image_reply (connection->xcb_connection,
+				     xcb_shm_get_image (connection->xcb_connection,
+							src,
+							src_x, src_y,
+							width, height,
+							(uint32_t) -1,
+							XCB_IMAGE_FORMAT_Z_PIXMAP,
+							shmseg, offset),
+				     NULL);
+    free (reply);
+
+    if (!reply) {
+	/* an error here should be impossible */
+	return _cairo_error (CAIRO_STATUS_READ_ERROR);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_xcb_connection_shm_detach (cairo_xcb_connection_t *connection,
+				  uint32_t segment)
+{
+    assert (connection->flags & CAIRO_XCB_HAS_SHM);
+    xcb_shm_detach (connection->xcb_connection, segment);
+    _cairo_xcb_connection_put_xid (connection, segment);
+}
+
+#endif /* CAIRO_HAS_XCB_SHM_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-connection.c b/libs/cairo-1.16.0/src/cairo-xcb-connection.c
new file mode 100644
index 0000000..51f5ee3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-connection.c
@@ -0,0 +1,1006 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Authors:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+#include "cairo-hash-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-list-inline.h"
+
+#include <xcb/xcbext.h>
+#include <xcb/bigreq.h>
+#include <errno.h>
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <xcb/shm.h>
+#endif
+
+typedef struct _cairo_xcb_xrender_format {
+    cairo_hash_entry_t key;
+    xcb_render_pictformat_t xrender_format;
+} cairo_xcb_xrender_format_t;
+
+typedef struct _cairo_xcb_xid {
+    cairo_list_t link;
+    uint32_t xid;
+} cairo_xcb_xid_t;
+
+#define XCB_RENDER_AT_LEAST(V, major, minor)	\
+	(((V)->major_version > major) ||			\
+	 (((V)->major_version == major) && ((V)->minor_version >= minor)))
+
+#define XCB_RENDER_HAS_CREATE_PICTURE(surface)		XCB_RENDER_AT_LEAST((surface), 0, 0)
+#define XCB_RENDER_HAS_COMPOSITE(surface)		XCB_RENDER_AT_LEAST((surface), 0, 0)
+#define XCB_RENDER_HAS_COMPOSITE_TEXT(surface)		XCB_RENDER_AT_LEAST((surface), 0, 0)
+
+#define XCB_RENDER_HAS_FILL_RECTANGLES(surface)		XCB_RENDER_AT_LEAST((surface), 0, 1)
+
+#define XCB_RENDER_HAS_DISJOINT(surface)		XCB_RENDER_AT_LEAST((surface), 0, 2)
+#define XCB_RENDER_HAS_CONJOINT(surface)		XCB_RENDER_AT_LEAST((surface), 0, 2)
+
+#define XCB_RENDER_HAS_TRAPEZOIDS(surface)		XCB_RENDER_AT_LEAST((surface), 0, 4)
+#define XCB_RENDER_HAS_TRIANGLES(surface)		XCB_RENDER_AT_LEAST((surface), 0, 4)
+#define XCB_RENDER_HAS_TRISTRIP(surface)		XCB_RENDER_AT_LEAST((surface), 0, 4)
+#define XCB_RENDER_HAS_TRIFAN(surface)			XCB_RENDER_AT_LEAST((surface), 0, 4)
+
+#define XCB_RENDER_HAS_PICTURE_TRANSFORM(surface)	XCB_RENDER_AT_LEAST((surface), 0, 6)
+#define XCB_RENDER_HAS_FILTERS(surface)			XCB_RENDER_AT_LEAST((surface), 0, 6)
+#define XCB_RENDER_HAS_FILTER_GOOD(surface) FALSE
+#define XCB_RENDER_HAS_FILTER_BEST(surface) FALSE
+#define XCB_RENDER_HAS_SUBPIXEL_ORDER(surface)		XCB_RENDER_AT_LEAST((surface), 0, 6)
+
+#define XCB_RENDER_HAS_EXTENDED_REPEAT(surface)	XCB_RENDER_AT_LEAST((surface), 0, 10)
+#define XCB_RENDER_HAS_GRADIENTS(surface)	XCB_RENDER_AT_LEAST((surface), 0, 10)
+
+#define XCB_RENDER_HAS_PDF_OPERATORS(surface)	XCB_RENDER_AT_LEAST((surface), 0, 11)
+
+static cairo_list_t connections;
+
+static cairo_status_t
+_cairo_xcb_connection_find_visual_formats (cairo_xcb_connection_t *connection,
+					  const xcb_render_query_pict_formats_reply_t *formats)
+{
+    xcb_render_pictscreen_iterator_t screens;
+    xcb_render_pictdepth_iterator_t depths;
+    xcb_render_pictvisual_iterator_t visuals;
+
+    for (screens = xcb_render_query_pict_formats_screens_iterator (formats);
+	 screens.rem;
+	 xcb_render_pictscreen_next (&screens))
+    {
+	for (depths = xcb_render_pictscreen_depths_iterator (screens.data);
+	     depths.rem;
+	     xcb_render_pictdepth_next (&depths))
+	{
+	    for (visuals = xcb_render_pictdepth_visuals_iterator (depths.data);
+		 visuals.rem;
+		 xcb_render_pictvisual_next (&visuals))
+	    {
+		cairo_xcb_xrender_format_t *f;
+		cairo_status_t status;
+
+		f = _cairo_malloc (sizeof (cairo_xcb_xrender_format_t));
+		if (unlikely (f == NULL))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+		f->key.hash = visuals.data->visual;
+		f->xrender_format = visuals.data->format;
+		status = _cairo_hash_table_insert (connection->visual_to_xrender_format,
+						   &f->key);
+		if (unlikely (status))
+		    return status;
+	    }
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if 0
+static xcb_format_t *
+find_format_for_depth (const xcb_setup_t *setup, uint8_t depth)
+{
+    xcb_format_t *fmt = xcb_setup_pixmap_formats (setup);
+    xcb_format_t *fmtend = fmt + xcb_setup_pixmap_formats_length (setup);
+
+    for (; fmt != fmtend; ++fmt)
+	if (fmt->depth == depth)
+	    return fmt;
+
+    return 0;
+}
+#endif
+
+static cairo_status_t
+_cairo_xcb_connection_parse_xrender_formats (cairo_xcb_connection_t *connection,
+					     const xcb_render_query_pict_formats_reply_t *formats)
+{
+    xcb_render_pictforminfo_iterator_t i;
+    cairo_status_t status;
+
+    for (i = xcb_render_query_pict_formats_formats_iterator (formats);
+	 i.rem;
+	 xcb_render_pictforminfo_next (&i))
+    {
+	cairo_format_masks_t masks;
+	pixman_format_code_t pixman_format;
+
+	if (i.data->type != XCB_RENDER_PICT_TYPE_DIRECT)
+	    continue;
+
+	masks.alpha_mask =
+	    (unsigned long) i.data->direct.alpha_mask << i.data->direct.alpha_shift;
+	masks.red_mask =
+	    (unsigned long) i.data->direct.red_mask << i.data->direct.red_shift;
+	masks.green_mask =
+	    (unsigned long) i.data->direct.green_mask << i.data->direct.green_shift;
+	masks.blue_mask =
+	    (unsigned long) i.data->direct.blue_mask << i.data->direct.blue_shift;
+	masks.bpp = i.data->depth;
+
+	if (_pixman_format_from_masks (&masks, &pixman_format)) {
+	    cairo_hash_entry_t key;
+
+	    key.hash = pixman_format;
+	    if (! _cairo_hash_table_lookup (connection->xrender_formats, &key)) {
+		cairo_xcb_xrender_format_t *f;
+
+		f = _cairo_malloc (sizeof (cairo_xcb_xrender_format_t));
+		if (unlikely (f == NULL))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+		f->key.hash = pixman_format;
+		f->xrender_format = i.data->id;
+		status = _cairo_hash_table_insert (connection->xrender_formats,
+						   &f->key);
+		if (unlikely (status))
+		    return status;
+
+#if 0
+		printf ("xrender %x -> (%lx, %lx, %lx, %lx, %d) %x [%d, %d]\n",
+			i.data->id,
+			masks.alpha_mask,
+			masks.red_mask,
+			masks.green_mask,
+			masks.blue_mask,
+			masks.bpp,
+			pixman_format,
+			PIXMAN_FORMAT_DEPTH(pixman_format),
+			PIXMAN_FORMAT_BPP(pixman_format));
+#endif
+	    }
+	}
+    }
+
+    status = _cairo_xcb_connection_find_visual_formats (connection, formats);
+    if (unlikely (status))
+	return status;
+
+    connection->standard_formats[CAIRO_FORMAT_A1] =
+	_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a1);
+
+    connection->standard_formats[CAIRO_FORMAT_A8] =
+	_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a8);
+
+    connection->standard_formats[CAIRO_FORMAT_RGB24] =
+	_cairo_xcb_connection_get_xrender_format (connection,
+						  PIXMAN_FORMAT (24,
+								 PIXMAN_TYPE_ARGB,
+								 0, 8, 8, 8));
+    if (connection->standard_formats[CAIRO_FORMAT_RGB24] == XCB_NONE) {
+	connection->standard_formats[CAIRO_FORMAT_RGB24] =
+	    _cairo_xcb_connection_get_xrender_format (connection,
+						      PIXMAN_FORMAT (24, PIXMAN_TYPE_ABGR,
+								     0, 8, 8, 8));
+    }
+
+    connection->standard_formats[CAIRO_FORMAT_ARGB32] =
+	_cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a8r8g8b8);
+    if (connection->standard_formats[CAIRO_FORMAT_ARGB32] == XCB_NONE) {
+	connection->standard_formats[CAIRO_FORMAT_ARGB32] =
+	    _cairo_xcb_connection_get_xrender_format (connection, PIXMAN_a8b8g8r8);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/*
+ * We require support for depth 1, 8, 24 and 32 pixmaps
+ */
+#define DEPTH_MASK(d)	(1 << ((d) - 1))
+#define REQUIRED_DEPTHS	(DEPTH_MASK(1) | \
+			 DEPTH_MASK(8) | \
+			 DEPTH_MASK(24) | \
+			 DEPTH_MASK(32))
+static cairo_bool_t
+pixmap_depths_usable (cairo_xcb_connection_t *connection,
+		      uint32_t missing,
+		      xcb_drawable_t root)
+{
+    xcb_connection_t *c = connection->xcb_connection;
+    xcb_void_cookie_t create_cookie[32];
+    xcb_pixmap_t pixmap;
+    cairo_bool_t success = TRUE;
+    int depth, i, j;
+
+    pixmap = _cairo_xcb_connection_get_xid (connection);
+
+    for (depth = 1, i = 0; depth <= 32; depth++) {
+	if (missing & DEPTH_MASK(depth)) {
+	    create_cookie[i] = xcb_create_pixmap_checked (c, depth, pixmap, root, 1, 1);
+	    xcb_free_pixmap (c, pixmap);
+	    if (!create_cookie[i].sequence) {
+		success = FALSE;
+		break;
+	    }
+	    i++;
+	}
+    }
+
+    for (j = 0; j < i; j++) {
+	xcb_generic_error_t *create_error = xcb_request_check (c, create_cookie[j]);
+	success &= create_error == NULL;
+	free (create_error);
+    }
+
+    _cairo_xcb_connection_put_xid (connection, pixmap);
+
+    return success;
+}
+
+static cairo_bool_t
+has_required_depths (cairo_xcb_connection_t *connection)
+{
+    xcb_screen_iterator_t screens;
+
+    for (screens = xcb_setup_roots_iterator (connection->root);
+	 screens.rem;
+	 xcb_screen_next (&screens))
+    {
+	xcb_depth_iterator_t depths;
+	uint32_t missing = REQUIRED_DEPTHS;
+
+	for (depths = xcb_screen_allowed_depths_iterator (screens.data);
+	     depths.rem;
+	     xcb_depth_next (&depths))
+	{
+	    missing &= ~DEPTH_MASK (depths.data->depth);
+	}
+	if (missing == 0)
+	    continue;
+
+	/*
+	 * Ok, this is ugly.  It should be sufficient at this
+	 * point to just return false, but Xinerama is broken at
+	 * this point and only advertises depths which have an
+	 * associated visual.  Of course, the other depths still
+	 * work, but the only way to find out is to try them.
+	 */
+	if (! pixmap_depths_usable (connection, missing, screens.data->root))
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+static xcb_render_query_version_reply_t *
+_render_restrict_env(xcb_render_query_version_reply_t *version)
+{
+    const char *env;
+
+    if (version == NULL)
+	return NULL;
+
+    env = getenv ("CAIRO_DEBUG");
+    if (env != NULL)
+	env = strstr (env, "xrender-version=");
+    if (env != NULL) {
+	int max_render_major, max_render_minor;
+
+	env += sizeof ("xrender-version=") - 1;
+	if (sscanf (env, "%d.%d", &max_render_major, &max_render_minor) != 2)
+	    max_render_major = max_render_minor = -1;
+
+	if (max_render_major < 0 || max_render_minor < 0) {
+	    free (version);
+	    return NULL;
+	}
+
+	if (max_render_major < (int) version->major_version ||
+	    (max_render_major == (int) version->major_version &&
+	     max_render_minor < (int) version->minor_version))
+	{
+	    version->major_version = max_render_major;
+	    version->minor_version = max_render_minor;
+	}
+    }
+
+    return version;
+}
+
+static cairo_status_t
+_cairo_xcb_connection_query_render (cairo_xcb_connection_t *connection)
+{
+    xcb_connection_t *c = connection->xcb_connection;
+    xcb_render_query_version_cookie_t version_cookie;
+    xcb_render_query_pict_formats_cookie_t formats_cookie;
+    xcb_render_query_version_reply_t *version;
+    xcb_render_query_pict_formats_reply_t *formats;
+    cairo_status_t status;
+    cairo_bool_t present;
+
+    version_cookie = xcb_render_query_version (c, XCB_RENDER_MAJOR_VERSION, XCB_RENDER_MINOR_VERSION);
+    formats_cookie = xcb_render_query_pict_formats (c);
+
+    present = has_required_depths (connection);
+    version = xcb_render_query_version_reply (c, version_cookie, 0);
+    formats = xcb_render_query_pict_formats_reply (c, formats_cookie, 0);
+
+    version = _render_restrict_env (version);
+
+    if (! present || version == NULL || formats == NULL) {
+	free (version);
+	free (formats);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* always true if the extension is present (i.e. >= 0.0) */
+    connection->flags |= CAIRO_XCB_HAS_RENDER;
+    connection->flags |= CAIRO_XCB_RENDER_HAS_COMPOSITE;
+    connection->flags |= CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS;
+
+    if (XCB_RENDER_HAS_FILL_RECTANGLES (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES;
+
+    if (XCB_RENDER_HAS_TRAPEZOIDS (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS;
+
+    if (XCB_RENDER_HAS_PICTURE_TRANSFORM (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM;
+
+    if (XCB_RENDER_HAS_FILTERS (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_FILTERS;
+
+    if (XCB_RENDER_HAS_FILTER_GOOD (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_FILTER_GOOD;
+
+    if (XCB_RENDER_HAS_FILTER_BEST (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_FILTER_BEST;
+
+    if (XCB_RENDER_HAS_PDF_OPERATORS (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_PDF_OPERATORS;
+
+    if (XCB_RENDER_HAS_EXTENDED_REPEAT (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT;
+
+    if (XCB_RENDER_HAS_GRADIENTS (version))
+	connection->flags |= CAIRO_XCB_RENDER_HAS_GRADIENTS;
+
+    if (XCB_RENDER_HAS_SUBPIXEL_ORDER (version)) {
+	uint32_t screen;
+	uint32_t *subpixel = xcb_render_query_pict_formats_subpixels(formats);
+
+	/* The spec explicitly allows to have too few entries in the reply... */
+	for (screen = 0; screen < formats->num_subpixel && screen < connection->root->roots_len; screen++)
+	    connection->subpixel_orders[screen] = subpixel[screen];
+    }
+
+    free (version);
+
+    status = _cairo_xcb_connection_parse_xrender_formats (connection, formats);
+    free (formats);
+
+    return status;
+}
+
+#if 0
+static void
+_cairo_xcb_connection_query_cairo (cairo_xcb_connection_t *connection)
+{
+    xcb_connection_t *c = connection->xcb_connection;
+    xcb_cairo_query_version_reply_t *version;
+
+    version = xcb_cairo_query_version_reply (c,
+					     xcb_cairo_query_version (c, 0, 0),
+					     0);
+
+    free (version);
+}
+#endif
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+static cairo_bool_t
+can_use_shm (cairo_xcb_connection_t *connection)
+{
+    cairo_bool_t success = TRUE;
+    xcb_connection_t *c = connection->xcb_connection;
+    xcb_void_cookie_t cookie[2];
+    xcb_generic_error_t *error;
+    int shmid;
+    uint32_t shmseg;
+    void *ptr;
+
+    shmid = shmget (IPC_PRIVATE, 0x1000, IPC_CREAT | 0600);
+    if (shmid == -1)
+	return FALSE;
+
+    ptr = shmat (shmid, NULL, 0);
+    if (ptr == (char *) -1) {
+	shmctl (shmid, IPC_RMID, NULL);
+	return FALSE;
+    }
+
+    shmseg = _cairo_xcb_connection_get_xid (connection);
+    cookie[0] = xcb_shm_attach_checked (c, shmseg, shmid, FALSE);
+    cookie[1] = xcb_shm_detach_checked (c, shmseg);
+    _cairo_xcb_connection_put_xid (connection, shmseg);
+
+    error = xcb_request_check (c, cookie[0]);
+    if (error != NULL)
+	success = FALSE;
+
+    error = xcb_request_check (c, cookie[1]);
+    if (error != NULL)
+	success = FALSE;
+
+    shmctl (shmid, IPC_RMID, NULL);
+    shmdt (ptr);
+
+    return success;
+}
+
+static void
+_cairo_xcb_connection_query_shm (cairo_xcb_connection_t *connection)
+{
+    xcb_connection_t *c = connection->xcb_connection;
+    xcb_shm_query_version_reply_t *version;
+
+    version = xcb_shm_query_version_reply (c, xcb_shm_query_version (c), 0);
+    if (version == NULL)
+	return;
+
+    free (version);
+
+    if (can_use_shm (connection))
+	connection->flags |= CAIRO_XCB_HAS_SHM;
+}
+#endif
+
+static cairo_status_t
+_device_flush (void *device)
+{
+    cairo_xcb_connection_t *connection = device;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&connection->device);
+    if (unlikely (status))
+	return status;
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    _cairo_xcb_connection_shm_mem_pools_flush (connection);
+#endif
+
+    xcb_flush (connection->xcb_connection);
+
+    cairo_device_release (&connection->device);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_pluck_xrender_format (void *entry,
+		       void *closure)
+{
+    _cairo_hash_table_remove (closure, entry);
+    free (entry);
+}
+
+static void
+_device_finish (void *device)
+{
+    cairo_xcb_connection_t *connection = device;
+    cairo_bool_t was_cached = FALSE;
+
+    if (! cairo_list_is_empty (&connection->link)) {
+	CAIRO_MUTEX_LOCK (_cairo_xcb_connections_mutex);
+	cairo_list_del (&connection->link);
+	CAIRO_MUTEX_UNLOCK (_cairo_xcb_connections_mutex);
+	was_cached = TRUE;
+    }
+
+    while (! cairo_list_is_empty (&connection->fonts)) {
+	cairo_xcb_font_t *font;
+
+	font = cairo_list_first_entry (&connection->fonts,
+				       cairo_xcb_font_t,
+				       link);
+	_cairo_xcb_font_close (font);
+    }
+
+    while (! cairo_list_is_empty (&connection->screens)) {
+	cairo_xcb_screen_t *screen;
+
+	screen = cairo_list_first_entry (&connection->screens,
+					 cairo_xcb_screen_t,
+					 link);
+	_cairo_xcb_screen_finish (screen);
+    }
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    /* _cairo_xcb_screen_finish finishes surfaces. If any of those surfaces had
+     * a fallback image, we might have done a SHM PutImage. */
+    _cairo_xcb_connection_shm_mem_pools_flush (connection);
+#endif
+
+    if (was_cached)
+	cairo_device_destroy (device);
+}
+
+static void
+_device_destroy (void *device)
+{
+    cairo_xcb_connection_t *connection = device;
+
+    _cairo_hash_table_foreach (connection->xrender_formats,
+			       _pluck_xrender_format, connection->xrender_formats);
+    _cairo_hash_table_destroy (connection->xrender_formats);
+
+    _cairo_hash_table_foreach (connection->visual_to_xrender_format,
+			       _pluck_xrender_format,
+			       connection->visual_to_xrender_format);
+    _cairo_hash_table_destroy (connection->visual_to_xrender_format);
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    _cairo_xcb_connection_shm_mem_pools_fini (connection);
+#endif
+    _cairo_freepool_fini (&connection->shm_info_freelist);
+
+    _cairo_freepool_fini (&connection->xid_pool);
+
+    CAIRO_MUTEX_FINI (connection->shm_mutex);
+    CAIRO_MUTEX_FINI (connection->screens_mutex);
+
+    free (connection->subpixel_orders);
+    free (connection);
+}
+
+static const cairo_device_backend_t _cairo_xcb_device_backend = {
+    CAIRO_DEVICE_TYPE_XCB,
+
+    NULL, NULL, /* lock, unlock */
+
+    _device_flush,
+    _device_finish,
+    _device_destroy,
+};
+
+cairo_xcb_connection_t *
+_cairo_xcb_connection_get (xcb_connection_t *xcb_connection)
+{
+    cairo_xcb_connection_t *connection;
+    const xcb_query_extension_reply_t *ext;
+    cairo_status_t status;
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    CAIRO_MUTEX_LOCK (_cairo_xcb_connections_mutex);
+    if (connections.next == NULL) {
+	/* XXX _cairo_init () */
+	cairo_list_init (&connections);
+    }
+
+    cairo_list_foreach_entry (connection,
+			      cairo_xcb_connection_t,
+			      &connections,
+			      link)
+    {
+	if (connection->xcb_connection == xcb_connection) {
+	    /* Maintain MRU order. */
+	    if (connections.next != &connection->link)
+		cairo_list_move (&connection->link, &connections);
+
+	    goto unlock;
+	}
+    }
+
+    connection = _cairo_malloc (sizeof (cairo_xcb_connection_t));
+    if (unlikely (connection == NULL))
+	goto unlock;
+
+    _cairo_device_init (&connection->device, &_cairo_xcb_device_backend);
+
+    connection->xcb_connection = xcb_connection;
+
+    cairo_list_init (&connection->fonts);
+    cairo_list_init (&connection->screens);
+    cairo_list_init (&connection->link);
+    connection->xrender_formats = _cairo_hash_table_create (NULL);
+    if (connection->xrender_formats == NULL) {
+	CAIRO_MUTEX_FINI (connection->device.mutex);
+	free (connection);
+	connection = NULL;
+	goto unlock;
+    }
+
+    connection->visual_to_xrender_format = _cairo_hash_table_create (NULL);
+    if (connection->visual_to_xrender_format == NULL) {
+	_cairo_hash_table_destroy (connection->xrender_formats);
+	CAIRO_MUTEX_FINI (connection->device.mutex);
+	free (connection);
+	connection = NULL;
+	goto unlock;
+    }
+
+    cairo_list_init (&connection->free_xids);
+    _cairo_freepool_init (&connection->xid_pool,
+			  sizeof (cairo_xcb_xid_t));
+
+    cairo_list_init (&connection->shm_pools);
+    cairo_list_init (&connection->shm_pending);
+    _cairo_freepool_init (&connection->shm_info_freelist,
+			  sizeof (cairo_xcb_shm_info_t));
+
+    connection->maximum_request_length =
+	xcb_get_maximum_request_length (xcb_connection);
+
+    CAIRO_MUTEX_INIT (connection->shm_mutex);
+    CAIRO_MUTEX_INIT (connection->screens_mutex);
+
+    CAIRO_MUTEX_LOCK (connection->device.mutex);
+
+    connection->flags = 0;
+    connection->force_precision = -1;
+
+    xcb_prefetch_extension_data (xcb_connection, &xcb_big_requests_id);
+    xcb_prefetch_extension_data (xcb_connection, &xcb_render_id);
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    xcb_prefetch_extension_data (xcb_connection, &xcb_shm_id);
+#endif
+#if 0
+    xcb_prefetch_extension_data (xcb_connection, &xcb_cairo_id);
+#endif
+
+    xcb_prefetch_maximum_request_length (xcb_connection);
+
+    connection->root = xcb_get_setup (xcb_connection);
+    connection->render = NULL;
+    connection->subpixel_orders = calloc (connection->root->roots_len, sizeof(*connection->subpixel_orders));
+    if (unlikely (connection->subpixel_orders == NULL)) {
+	CAIRO_MUTEX_UNLOCK (connection->device.mutex);
+	_cairo_xcb_connection_destroy (connection);
+	connection = NULL;
+	goto unlock;
+    }
+
+    ext = xcb_get_extension_data (xcb_connection, &xcb_render_id);
+    if (ext != NULL && ext->present) {
+	status = _cairo_xcb_connection_query_render (connection);
+	if (unlikely (status)) {
+	    CAIRO_MUTEX_UNLOCK (connection->device.mutex);
+	    _cairo_xcb_connection_destroy (connection);
+	    connection = NULL;
+	    goto unlock;
+	}
+
+	connection->render = ext;
+    }
+
+#if 0
+    ext = xcb_get_extension_data (connection, &xcb_cairo_id);
+    if (ext != NULL && ext->present)
+	_cairo_xcb_connection_query_cairo (connection);
+#endif
+
+    connection->shm = NULL;
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    ext = xcb_get_extension_data (xcb_connection, &xcb_shm_id);
+    if (ext != NULL && ext->present) {
+	_cairo_xcb_connection_query_shm (connection);
+	connection->shm = ext;
+    }
+#endif
+
+    connection->original_flags = connection->flags;
+
+    CAIRO_MUTEX_UNLOCK (connection->device.mutex);
+
+    cairo_list_add (&connection->link, &connections);
+unlock:
+    CAIRO_MUTEX_UNLOCK (_cairo_xcb_connections_mutex);
+
+    return connection;
+}
+
+xcb_render_pictformat_t
+_cairo_xcb_connection_get_xrender_format (cairo_xcb_connection_t *connection,
+					  pixman_format_code_t pixman_format)
+{
+    cairo_hash_entry_t key;
+    cairo_xcb_xrender_format_t *format;
+
+    key.hash = pixman_format;
+    format = _cairo_hash_table_lookup (connection->xrender_formats, &key);
+    return format ? format->xrender_format : XCB_NONE;
+}
+
+xcb_render_pictformat_t
+_cairo_xcb_connection_get_xrender_format_for_visual (cairo_xcb_connection_t *connection,
+						     const xcb_visualid_t visual)
+{
+    cairo_hash_entry_t key;
+    cairo_xcb_xrender_format_t *format;
+
+    key.hash = visual;
+    format = _cairo_hash_table_lookup (connection->visual_to_xrender_format, &key);
+    return format ? format->xrender_format : XCB_NONE;
+}
+
+void
+_cairo_xcb_connection_put_xid (cairo_xcb_connection_t *connection,
+			       uint32_t xid)
+{
+    cairo_xcb_xid_t *cache;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (connection->device.mutex));
+    cache = _cairo_freepool_alloc (&connection->xid_pool);
+    if (likely (cache != NULL)) {
+	cache->xid = xid;
+	cairo_list_add (&cache->link, &connection->free_xids);
+    }
+}
+
+uint32_t
+_cairo_xcb_connection_get_xid (cairo_xcb_connection_t *connection)
+{
+    uint32_t xid;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (connection->device.mutex));
+    if (! cairo_list_is_empty (&connection->free_xids)) {
+	cairo_xcb_xid_t *cache;
+
+	cache = cairo_list_first_entry (&connection->free_xids,
+					cairo_xcb_xid_t,
+					link);
+	xid = cache->xid;
+
+	cairo_list_del (&cache->link);
+	_cairo_freepool_free (&connection->xid_pool, cache);
+    } else {
+	xid = xcb_generate_id (connection->xcb_connection);
+    }
+
+    return xid;
+}
+
+/**
+ * cairo_xcb_device_get_connection:
+ * @device: a #cairo_device_t for the XCB backend
+ *
+ * Get the connection for the XCB device.
+ *
+ * Returns: the #xcb_connection_t for the connection
+ *
+ * Since: 1.12
+ **/
+xcb_connection_t *
+cairo_xcb_device_get_connection (cairo_device_t *device)
+{
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XCB)
+	    return NULL;
+
+    return ((cairo_xcb_connection_t *)device)->xcb_connection;
+}
+
+/* public (debug) interface */
+
+/**
+ * cairo_xcb_device_debug_cap_xshm_version:
+ * @device: a #cairo_device_t for the XCB backend
+ * @major_version: major version to restrict to
+ * @minor_version: minor version to restrict to
+ *
+ * Restricts all future XCB surfaces for this devices to the specified version
+ * of the SHM extension. This function exists solely for debugging purpose.
+ * It let's you find out how cairo would behave with an older version of
+ * the SHM extension.
+ *
+ * Use the special values -1 and -1 for disabling the SHM extension.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xcb_device_debug_cap_xshm_version (cairo_device_t *device,
+                                         int major_version,
+                                         int minor_version)
+{
+    cairo_xcb_connection_t *connection = (cairo_xcb_connection_t *) device;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return;
+    }
+
+    /* First reset all the SHM flags to their original value. This works
+     * because we only ever clear bits after the connection was created.
+     */
+    connection->flags |= (connection->original_flags & CAIRO_XCB_SHM_MASK);
+
+    /* clear any flags that are inappropriate for the desired version */
+    if (major_version < 0 && minor_version < 0) {
+	connection->flags &= ~(CAIRO_XCB_HAS_SHM);
+    }
+}
+
+/**
+ * cairo_xcb_device_debug_cap_xrender_version:
+ * @device: a #cairo_device_t for the XCB backend
+ * @major_version: major version to restrict to
+ * @minor_version: minor version to restrict to
+ *
+ * Restricts all future XCB surfaces for this devices to the specified version
+ * of the RENDER extension. This function exists solely for debugging purpose.
+ * It let's you find out how cairo would behave with an older version of
+ * the RENDER extension.
+ *
+ * Use the special values -1 and -1 for disabling the RENDER extension.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xcb_device_debug_cap_xrender_version (cairo_device_t *device,
+                                            int major_version,
+                                            int minor_version)
+{
+    cairo_xcb_connection_t *connection = (cairo_xcb_connection_t *) device;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return;
+    }
+
+    /* First reset all the RENDER flags to their original value. This works
+     * because we only ever clear bits after the connection was created.
+     */
+    connection->flags |= (connection->original_flags & CAIRO_XCB_RENDER_MASK);
+
+    /* clear any flags that are inappropriate for the desired version */
+    if (major_version < 0 && minor_version < 0) {
+	connection->flags &= ~(CAIRO_XCB_HAS_RENDER |
+			       CAIRO_XCB_RENDER_HAS_COMPOSITE |
+			       CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS |
+			       CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES |
+			       CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS |
+			       CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM |
+			       CAIRO_XCB_RENDER_HAS_FILTERS |
+			       CAIRO_XCB_RENDER_HAS_FILTER_GOOD |
+			       CAIRO_XCB_RENDER_HAS_FILTER_BEST |
+			       CAIRO_XCB_RENDER_HAS_PDF_OPERATORS |
+			       CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT |
+			       CAIRO_XCB_RENDER_HAS_GRADIENTS);
+    } else {
+	xcb_render_query_version_reply_t version;
+
+	version.major_version = major_version;
+	version.minor_version = minor_version;
+
+	if (! XCB_RENDER_HAS_FILL_RECTANGLES (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES;
+
+	if (! XCB_RENDER_HAS_TRAPEZOIDS (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS;
+
+	if (! XCB_RENDER_HAS_PICTURE_TRANSFORM (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM;
+
+	if (! XCB_RENDER_HAS_FILTERS (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_FILTERS;
+
+	if (! XCB_RENDER_HAS_PDF_OPERATORS (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_PDF_OPERATORS;
+
+	if (! XCB_RENDER_HAS_EXTENDED_REPEAT (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT;
+
+	if (! XCB_RENDER_HAS_GRADIENTS (&version))
+	    connection->flags &= ~CAIRO_XCB_RENDER_HAS_GRADIENTS;
+    }
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_device_debug_cap_xrender_version);
+#endif
+
+/**
+ * cairo_xcb_device_debug_set_precision:
+ * @device: a #cairo_device_t for the XCB backend
+ * @precision: the precision to use
+ *
+ * Render supports two modes of precision when rendering trapezoids. Set
+ * the precision to the desired mode.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xcb_device_debug_set_precision (cairo_device_t *device,
+				      int precision)
+{
+    if (device == NULL || device->status)
+	return;
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return;
+    }
+
+    ((cairo_xcb_connection_t *) device)->force_precision = precision;
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_device_debug_set_precision);
+#endif
+
+/**
+ * cairo_xcb_device_debug_get_precision:
+ * @device: a #cairo_device_t for the XCB backend
+ *
+ * Get the Xrender precision mode.
+ *
+ * Returns: the render precision mode
+ *
+ * Since: 1.12
+ **/
+int
+cairo_xcb_device_debug_get_precision (cairo_device_t *device)
+{
+    if (device == NULL || device->status)
+	return -1;
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XCB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return -1;
+    }
+
+    return ((cairo_xcb_connection_t *) device)->force_precision;
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_device_debug_get_precision);
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-private.h b/libs/cairo-1.16.0/src/cairo-xcb-private.h
new file mode 100644
index 0000000..f5d5a4c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-private.h
@@ -0,0 +1,801 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_XCB_PRIVATE_H
+#define CAIRO_XCB_PRIVATE_H
+
+#include "cairoint.h"
+
+#include "cairo-xcb.h"
+
+#include "cairo-cache-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-device-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-list-private.h"
+#include "cairo-mutex-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-spans-private.h"
+#include "cairo-surface-private.h"
+
+#include <xcb/xcb.h>
+#include <xcb/render.h>
+#include <xcb/xcbext.h>
+#include <pixman.h>
+
+#define XLIB_COORD_MAX 32767
+
+/* maximum number of cached GC's */
+#define GC_CACHE_SIZE 4
+
+#define CAIRO_XCB_RENDER_AT_LEAST(major, minor)	\
+	((XCB_RENDER_MAJOR_VERSION > major) ||	\
+	((XCB_RENDER_MAJOR_VERSION == major) && (XCB_RENDER_MINOR_VERSION >= minor)))
+
+typedef struct _cairo_xcb_connection cairo_xcb_connection_t;
+typedef struct _cairo_xcb_font cairo_xcb_font_t;
+typedef struct _cairo_xcb_screen cairo_xcb_screen_t;
+typedef struct _cairo_xcb_surface cairo_xcb_surface_t;
+typedef struct _cairo_xcb_picture cairo_xcb_picture_t;
+typedef struct _cairo_xcb_shm_mem_pool cairo_xcb_shm_mem_pool_t;
+typedef struct _cairo_xcb_shm_info cairo_xcb_shm_info_t;
+typedef struct _cairo_xcb_resources cairo_xcb_resources_t;
+
+struct _cairo_xcb_shm_info {
+    cairo_xcb_connection_t *connection;
+    uint32_t shm;
+    uint32_t offset;
+    size_t size;
+    void *mem;
+    cairo_xcb_shm_mem_pool_t *pool;
+    xcb_get_input_focus_cookie_t sync;
+    cairo_list_t pending;
+};
+
+struct _cairo_xcb_surface {
+    cairo_surface_t base;
+    cairo_image_surface_t *fallback;
+    cairo_boxes_t fallback_damage;
+
+    cairo_xcb_connection_t *connection;
+    cairo_xcb_screen_t *screen;
+
+    xcb_drawable_t drawable;
+    cairo_bool_t owns_pixmap;
+
+    cairo_bool_t deferred_clear;
+    cairo_color_t deferred_clear_color;
+
+    int width;
+    int height;
+    int depth;
+
+    xcb_render_picture_t picture;
+    xcb_render_pictformat_t xrender_format;
+    pixman_format_code_t pixman_format;
+    uint32_t precision;
+
+    cairo_list_t link;
+};
+
+struct _cairo_xcb_picture {
+    cairo_surface_t base;
+
+    cairo_xcb_screen_t *screen;
+    xcb_render_picture_t picture;
+    xcb_render_pictformat_t xrender_format;
+    pixman_format_code_t pixman_format;
+
+    int width, height;
+
+    cairo_extend_t extend;
+    cairo_filter_t filter;
+    cairo_bool_t has_component_alpha;
+    xcb_render_transform_t transform;
+
+    int x0, y0;
+    int x, y;
+
+    cairo_list_t link;
+};
+
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+typedef struct _cairo_xlib_xcb_surface {
+    cairo_surface_t base;
+
+    cairo_xcb_surface_t *xcb;
+
+    /* original settings for query */
+    void *display;
+    void *screen;
+    void *visual;
+    void *format;
+} cairo_xlib_xcb_surface_t;
+#endif
+
+
+enum {
+    GLYPHSET_INDEX_ARGB32,
+    GLYPHSET_INDEX_A8,
+    GLYPHSET_INDEX_A1,
+    NUM_GLYPHSETS
+};
+
+typedef struct _cairo_xcb_font_glyphset_free_glyphs {
+    xcb_render_glyphset_t   glyphset;
+    int			    glyph_count;
+    xcb_render_glyph_t	    glyph_indices[128];
+} cairo_xcb_font_glyphset_free_glyphs_t;
+
+typedef struct _cairo_xcb_font_glyphset_info {
+    xcb_render_glyphset_t   glyphset;
+    cairo_format_t	    format;
+    xcb_render_pictformat_t xrender_format;
+    cairo_xcb_font_glyphset_free_glyphs_t *pending_free_glyphs;
+} cairo_xcb_font_glyphset_info_t;
+
+struct _cairo_xcb_font {
+    cairo_scaled_font_private_t      base;
+    cairo_scaled_font_t		    *scaled_font;
+    cairo_xcb_connection_t	    *connection;
+    cairo_xcb_font_glyphset_info_t  glyphset_info[NUM_GLYPHSETS];
+    cairo_list_t link;
+};
+
+struct _cairo_xcb_screen {
+    cairo_xcb_connection_t *connection;
+
+    xcb_screen_t	   *xcb_screen;
+    xcb_render_sub_pixel_t  subpixel_order;
+
+    xcb_gcontext_t gc[GC_CACHE_SIZE];
+    uint8_t gc_depths[GC_CACHE_SIZE];
+
+    cairo_surface_t *stock_colors[CAIRO_STOCK_NUM_COLORS];
+    struct {
+	cairo_surface_t *picture;
+	cairo_color_t color;
+    } solid_cache[16];
+    int solid_cache_size;
+
+    cairo_cache_t linear_pattern_cache;
+    cairo_cache_t radial_pattern_cache;
+    cairo_freelist_t pattern_cache_entry_freelist;
+
+    cairo_list_t link;
+    cairo_list_t surfaces;
+    cairo_list_t pictures;
+
+    cairo_bool_t has_font_options;
+    cairo_font_options_t font_options;
+};
+
+struct _cairo_xcb_connection {
+    cairo_device_t device;
+
+    xcb_connection_t *xcb_connection;
+
+    xcb_render_pictformat_t standard_formats[5];
+    cairo_hash_table_t *xrender_formats;
+    cairo_hash_table_t *visual_to_xrender_format;
+
+    unsigned int maximum_request_length;
+    unsigned int flags;
+    unsigned int original_flags;
+
+    int force_precision;
+
+    const xcb_setup_t *root;
+    const xcb_query_extension_reply_t *render;
+    const xcb_query_extension_reply_t *shm;
+    xcb_render_sub_pixel_t *subpixel_orders;
+
+    cairo_list_t free_xids;
+    cairo_freepool_t xid_pool;
+
+    cairo_mutex_t shm_mutex;
+    cairo_list_t shm_pools;
+    cairo_list_t shm_pending;
+    cairo_freepool_t shm_info_freelist;
+
+    cairo_mutex_t screens_mutex;
+    cairo_list_t screens;
+
+    cairo_list_t fonts;
+
+    cairo_list_t link;
+};
+
+struct _cairo_xcb_resources {
+    cairo_bool_t xft_antialias;
+    int xft_lcdfilter;
+    cairo_bool_t xft_hinting;
+    int xft_hintstyle;
+    int xft_rgba;
+};
+
+enum {
+    CAIRO_XCB_HAS_RENDER			= 0x0001,
+    CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES	= 0x0002,
+    CAIRO_XCB_RENDER_HAS_COMPOSITE		= 0x0004,
+    CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS	= 0x0008,
+    CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS	= 0x0010,
+    CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM	= 0x0020,
+    CAIRO_XCB_RENDER_HAS_FILTERS		= 0x0040,
+    CAIRO_XCB_RENDER_HAS_PDF_OPERATORS		= 0x0080,
+    CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT	= 0x0100,
+    CAIRO_XCB_RENDER_HAS_GRADIENTS		= 0x0200,
+    CAIRO_XCB_RENDER_HAS_FILTER_GOOD		= 0x0400,
+    CAIRO_XCB_RENDER_HAS_FILTER_BEST		= 0x0800,
+
+    CAIRO_XCB_HAS_SHM				= 0x80000000,
+
+    CAIRO_XCB_RENDER_MASK = CAIRO_XCB_HAS_RENDER |
+			    CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES |
+			    CAIRO_XCB_RENDER_HAS_COMPOSITE |
+			    CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS |
+			    CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS |
+			    CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM |
+			    CAIRO_XCB_RENDER_HAS_FILTERS |
+			    CAIRO_XCB_RENDER_HAS_PDF_OPERATORS |
+			    CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT |
+			    CAIRO_XCB_RENDER_HAS_GRADIENTS |
+			    CAIRO_XCB_RENDER_HAS_FILTER_GOOD |
+			    CAIRO_XCB_RENDER_HAS_FILTER_BEST,
+    CAIRO_XCB_SHM_MASK    = CAIRO_XCB_HAS_SHM
+};
+
+#define CAIRO_XCB_SHM_SMALL_IMAGE 8192
+
+cairo_private extern const cairo_surface_backend_t _cairo_xcb_surface_backend;
+
+/**
+ * _cairo_surface_is_xcb:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is an #cairo_xcb_surface_t
+ *
+ * Return value: %TRUE if the surface is an xcb surface
+ **/
+static inline cairo_bool_t
+_cairo_surface_is_xcb (const cairo_surface_t *surface)
+{
+    /* _cairo_surface_nil sets a NULL backend so be safe */
+    return surface->backend && surface->backend->type == CAIRO_SURFACE_TYPE_XCB;
+}
+
+cairo_private cairo_xcb_connection_t *
+_cairo_xcb_connection_get (xcb_connection_t *connection);
+
+static inline cairo_xcb_connection_t *
+_cairo_xcb_connection_reference (cairo_xcb_connection_t *connection)
+{
+    return (cairo_xcb_connection_t *) cairo_device_reference (&connection->device);
+}
+
+cairo_private xcb_render_pictformat_t
+_cairo_xcb_connection_get_xrender_format (cairo_xcb_connection_t *connection,
+					  pixman_format_code_t pixman_format);
+
+cairo_private xcb_render_pictformat_t
+_cairo_xcb_connection_get_xrender_format_for_visual (cairo_xcb_connection_t *connection,
+						     const xcb_visualid_t visual);
+
+static inline cairo_status_t cairo_warn
+_cairo_xcb_connection_acquire (cairo_xcb_connection_t *connection)
+{
+    return cairo_device_acquire (&connection->device);
+}
+
+cairo_private uint32_t
+_cairo_xcb_connection_get_xid (cairo_xcb_connection_t *connection);
+
+cairo_private void
+_cairo_xcb_connection_put_xid (cairo_xcb_connection_t *connection,
+			       uint32_t xid);
+
+static inline void
+_cairo_xcb_connection_release (cairo_xcb_connection_t *connection)
+{
+    cairo_device_release (&connection->device);
+}
+
+static inline void
+_cairo_xcb_connection_destroy (cairo_xcb_connection_t *connection)
+{
+    cairo_device_destroy (&connection->device);
+}
+
+cairo_private cairo_int_status_t
+_cairo_xcb_connection_allocate_shm_info (cairo_xcb_connection_t *display,
+					 size_t size,
+					 cairo_bool_t might_reuse,
+					 cairo_xcb_shm_info_t **shm_info_out);
+
+cairo_private void
+_cairo_xcb_shm_info_destroy (cairo_xcb_shm_info_t *shm_info);
+
+cairo_private void
+_cairo_xcb_connection_shm_mem_pools_flush (cairo_xcb_connection_t *connection);
+
+cairo_private void
+_cairo_xcb_connection_shm_mem_pools_fini (cairo_xcb_connection_t *connection);
+
+cairo_private void
+_cairo_xcb_font_close (cairo_xcb_font_t *font);
+
+cairo_private cairo_xcb_screen_t *
+_cairo_xcb_screen_get (xcb_connection_t *connection,
+		       xcb_screen_t *screen);
+
+cairo_private void
+_cairo_xcb_screen_finish (cairo_xcb_screen_t *screen);
+
+cairo_private xcb_gcontext_t
+_cairo_xcb_screen_get_gc (cairo_xcb_screen_t *screen,
+			  xcb_drawable_t drawable,
+			  int depth);
+
+cairo_private void
+_cairo_xcb_screen_put_gc (cairo_xcb_screen_t *screen, int depth, xcb_gcontext_t gc);
+
+cairo_private cairo_font_options_t *
+_cairo_xcb_screen_get_font_options (cairo_xcb_screen_t *screen);
+
+cairo_private cairo_status_t
+_cairo_xcb_screen_store_linear_picture (cairo_xcb_screen_t *screen,
+					const cairo_linear_pattern_t *linear,
+					cairo_surface_t *picture);
+
+cairo_private cairo_surface_t *
+_cairo_xcb_screen_lookup_linear_picture (cairo_xcb_screen_t *screen,
+					 const cairo_linear_pattern_t *linear);
+
+cairo_private cairo_status_t
+_cairo_xcb_screen_store_radial_picture (cairo_xcb_screen_t *screen,
+					const cairo_radial_pattern_t *radial,
+					cairo_surface_t *picture);
+
+cairo_private cairo_surface_t *
+_cairo_xcb_screen_lookup_radial_picture (cairo_xcb_screen_t *screen,
+					 const cairo_radial_pattern_t *radial);
+
+cairo_private cairo_surface_t *
+_cairo_xcb_surface_create_similar_image (void *abstrct_other,
+					 cairo_format_t format,
+					 int width,
+					 int height);
+
+cairo_private cairo_surface_t *
+_cairo_xcb_surface_create_similar (void			*abstract_other,
+				   cairo_content_t	 content,
+				   int			 width,
+				   int			 height);
+
+cairo_private cairo_surface_t *
+_cairo_xcb_surface_create_internal (cairo_xcb_screen_t		*screen,
+				    xcb_drawable_t		 drawable,
+				    cairo_bool_t		 owns_pixmap,
+				    pixman_format_code_t	 pixman_format,
+				    xcb_render_pictformat_t	 xrender_format,
+				    int				 width,
+				    int				 height);
+
+cairo_private_no_warn cairo_bool_t
+_cairo_xcb_surface_get_extents (void *abstract_surface,
+				cairo_rectangle_int_t *extents);
+
+cairo_private cairo_int_status_t
+_cairo_xcb_render_compositor_paint (const cairo_compositor_t     *compositor,
+				    cairo_composite_rectangles_t *extents);
+
+cairo_private cairo_int_status_t
+_cairo_xcb_render_compositor_mask (const cairo_compositor_t     *compositor,
+				   cairo_composite_rectangles_t *extents);
+
+cairo_private cairo_int_status_t
+_cairo_xcb_render_compositor_stroke (const cairo_compositor_t     *compositor,
+				     cairo_composite_rectangles_t *extents,
+				     const cairo_path_fixed_t     *path,
+				     const cairo_stroke_style_t   *style,
+				     const cairo_matrix_t         *ctm,
+				     const cairo_matrix_t         *ctm_inverse,
+				     double                        tolerance,
+				     cairo_antialias_t             antialias);
+
+cairo_private cairo_int_status_t
+_cairo_xcb_render_compositor_fill (const cairo_compositor_t     *compositor,
+				   cairo_composite_rectangles_t *extents,
+				   const cairo_path_fixed_t     *path,
+				   cairo_fill_rule_t             fill_rule,
+				   double                        tolerance,
+				   cairo_antialias_t             antialias);
+
+cairo_private cairo_int_status_t
+_cairo_xcb_render_compositor_glyphs (const cairo_compositor_t     *compositor,
+				     cairo_composite_rectangles_t *extents,
+				     cairo_scaled_font_t          *scaled_font,
+				     cairo_glyph_t                *glyphs,
+				     int                           num_glyphs,
+				     cairo_bool_t                  overlap);
+cairo_private void
+_cairo_xcb_surface_scaled_font_fini (cairo_scaled_font_t *scaled_font);
+
+cairo_private void
+_cairo_xcb_surface_scaled_glyph_fini (cairo_scaled_glyph_t *scaled_glyph,
+				      cairo_scaled_font_t  *scaled_font);
+
+cairo_private cairo_status_t
+_cairo_xcb_surface_clear (cairo_xcb_surface_t *dst);
+
+cairo_private cairo_status_t
+_cairo_xcb_surface_core_copy_boxes (cairo_xcb_surface_t		*dst,
+				   const cairo_pattern_t	*src_pattern,
+				   const cairo_rectangle_int_t	*extents,
+				   const cairo_boxes_t		*boxes);
+
+cairo_private cairo_status_t
+_cairo_xcb_surface_core_fill_boxes (cairo_xcb_surface_t *dst,
+				    const cairo_color_t	*color,
+				    cairo_boxes_t *boxes);
+
+cairo_private xcb_pixmap_t
+_cairo_xcb_connection_create_pixmap (cairo_xcb_connection_t *connection,
+				     uint8_t depth,
+				     xcb_drawable_t drawable,
+				     uint16_t width,
+				     uint16_t height);
+
+cairo_private void
+_cairo_xcb_connection_free_pixmap (cairo_xcb_connection_t *connection,
+				   xcb_pixmap_t pixmap);
+
+cairo_private xcb_gcontext_t
+_cairo_xcb_connection_create_gc (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t drawable,
+				 uint32_t value_mask,
+				 uint32_t *values);
+
+cairo_private void
+_cairo_xcb_connection_free_gc (cairo_xcb_connection_t *connection,
+			       xcb_gcontext_t gc);
+
+cairo_private void
+_cairo_xcb_connection_change_gc (cairo_xcb_connection_t *connection,
+				 xcb_gcontext_t gc,
+				 uint32_t value_mask,
+				 uint32_t *values);
+
+cairo_private void
+_cairo_xcb_connection_copy_area (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t src,
+				 xcb_drawable_t dst,
+				 xcb_gcontext_t gc,
+				 int16_t src_x,
+				 int16_t src_y,
+				 int16_t dst_x,
+				 int16_t dst_y,
+				 uint16_t width,
+				 uint16_t height);
+
+cairo_private void
+_cairo_xcb_connection_put_image (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t dst,
+				 xcb_gcontext_t gc,
+				 uint16_t width,
+				 uint16_t height,
+				 int16_t dst_x,
+				 int16_t dst_y,
+				 uint8_t depth,
+				 uint32_t length,
+				 void *data);
+
+cairo_private void
+_cairo_xcb_connection_put_subimage (cairo_xcb_connection_t *connection,
+				    xcb_drawable_t dst,
+				    xcb_gcontext_t gc,
+				    int16_t src_x,
+				    int16_t src_y,
+				    uint16_t width,
+				    uint16_t height,
+				    uint16_t cpp,
+				    int stride,
+				    int16_t dst_x,
+				    int16_t dst_y,
+				    uint8_t depth,
+				    void *data);
+
+cairo_private xcb_get_image_reply_t *
+_cairo_xcb_connection_get_image (cairo_xcb_connection_t *connection,
+				 xcb_drawable_t src,
+				 int16_t src_x,
+				 int16_t src_y,
+				 uint16_t width,
+				 uint16_t height);
+
+cairo_private void
+_cairo_xcb_connection_poly_fill_rectangle (cairo_xcb_connection_t *connection,
+					   xcb_drawable_t dst,
+					   xcb_gcontext_t gc,
+					   uint32_t num_rectangles,
+					   xcb_rectangle_t *rectangles);
+
+cairo_private cairo_status_t
+_cairo_xcb_shm_image_create (cairo_xcb_connection_t *connection,
+			     pixman_format_code_t pixman_format,
+			     int width, int height,
+			     cairo_image_surface_t **image_out,
+			     cairo_xcb_shm_info_t **shm_info_out);
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+cairo_private uint32_t
+_cairo_xcb_connection_shm_attach (cairo_xcb_connection_t *connection,
+				  uint32_t id,
+				  cairo_bool_t readonly);
+
+cairo_private void
+_cairo_xcb_connection_shm_put_image (cairo_xcb_connection_t *connection,
+				     xcb_drawable_t dst,
+				     xcb_gcontext_t gc,
+				     uint16_t total_width,
+				     uint16_t total_height,
+				     int16_t src_x,
+				     int16_t src_y,
+				     uint16_t width,
+				     uint16_t height,
+				     int16_t dst_x,
+				     int16_t dst_y,
+				     uint8_t depth,
+				     uint32_t shm,
+				     uint32_t offset);
+
+cairo_private cairo_status_t
+_cairo_xcb_connection_shm_get_image (cairo_xcb_connection_t *connection,
+				     xcb_drawable_t src,
+				     int16_t src_x,
+				     int16_t src_y,
+				     uint16_t width,
+				     uint16_t height,
+				     uint32_t shmseg,
+				     uint32_t offset);
+
+cairo_private void
+_cairo_xcb_connection_shm_detach (cairo_xcb_connection_t *connection,
+				  uint32_t segment);
+#else
+static inline void
+_cairo_xcb_connection_shm_put_image (cairo_xcb_connection_t *connection,
+				     xcb_drawable_t dst,
+				     xcb_gcontext_t gc,
+				     uint16_t total_width,
+				     uint16_t total_height,
+				     int16_t src_x,
+				     int16_t src_y,
+				     uint16_t width,
+				     uint16_t height,
+				     int16_t dst_x,
+				     int16_t dst_y,
+				     uint8_t depth,
+				     uint32_t shm,
+				     uint32_t offset)
+{
+    ASSERT_NOT_REACHED;
+}
+#endif
+
+cairo_private void
+_cairo_xcb_connection_render_create_picture (cairo_xcb_connection_t  *connection,
+					     xcb_render_picture_t     picture,
+					     xcb_drawable_t           drawable,
+					     xcb_render_pictformat_t  format,
+					     uint32_t                 value_mask,
+					     uint32_t	             *value_list);
+
+cairo_private void
+_cairo_xcb_connection_render_change_picture (cairo_xcb_connection_t     *connection,
+					     xcb_render_picture_t  picture,
+					     uint32_t              value_mask,
+					     uint32_t             *value_list);
+
+cairo_private void
+_cairo_xcb_connection_render_set_picture_clip_rectangles (cairo_xcb_connection_t      *connection,
+							  xcb_render_picture_t   picture,
+							  int16_t                clip_x_origin,
+							  int16_t                clip_y_origin,
+							  uint32_t               rectangles_len,
+							  xcb_rectangle_t       *rectangles);
+
+cairo_private void
+_cairo_xcb_connection_render_free_picture (cairo_xcb_connection_t *connection,
+					   xcb_render_picture_t  picture);
+
+cairo_private void
+_cairo_xcb_connection_render_composite (cairo_xcb_connection_t     *connection,
+					uint8_t               op,
+					xcb_render_picture_t  src,
+					xcb_render_picture_t  mask,
+					xcb_render_picture_t  dst,
+					int16_t               src_x,
+					int16_t               src_y,
+					int16_t               mask_x,
+					int16_t               mask_y,
+					int16_t               dst_x,
+					int16_t               dst_y,
+					uint16_t              width,
+					uint16_t              height);
+
+cairo_private void
+_cairo_xcb_connection_render_trapezoids (cairo_xcb_connection_t *connection,
+					 uint8_t                       op,
+					 xcb_render_picture_t          src,
+					 xcb_render_picture_t          dst,
+					 xcb_render_pictformat_t       mask_format,
+					 int16_t                       src_x,
+					 int16_t                       src_y,
+					 uint32_t                      traps_len,
+					 xcb_render_trapezoid_t       *traps);
+
+cairo_private void
+_cairo_xcb_connection_render_create_glyph_set (cairo_xcb_connection_t	*connection,
+					       xcb_render_glyphset_t	 id,
+					       xcb_render_pictformat_t  format);
+
+cairo_private void
+_cairo_xcb_connection_render_free_glyph_set (cairo_xcb_connection_t      *connection,
+					     xcb_render_glyphset_t  glyphset);
+
+cairo_private void
+_cairo_xcb_connection_render_add_glyphs (cairo_xcb_connection_t             *connection,
+					 xcb_render_glyphset_t         glyphset,
+					 uint32_t                      num_glyphs,
+					 uint32_t                     *glyphs_id,
+					 xcb_render_glyphinfo_t       *glyphs,
+					 uint32_t                      data_len,
+					 uint8_t                      *data);
+
+cairo_private void
+_cairo_xcb_connection_render_free_glyphs (cairo_xcb_connection_t         *connection,
+					  xcb_render_glyphset_t     glyphset,
+					  uint32_t                  num_glyphs,
+					  xcb_render_glyph_t       *glyphs);
+
+cairo_private void
+_cairo_xcb_connection_render_composite_glyphs_8 (cairo_xcb_connection_t        *connection,
+						 uint8_t                  op,
+						 xcb_render_picture_t     src,
+						 xcb_render_picture_t     dst,
+						 xcb_render_pictformat_t  mask_format,
+						 xcb_render_glyphset_t    glyphset,
+						 int16_t                  src_x,
+						 int16_t                  src_y,
+						 uint32_t                 glyphcmds_len,
+						 uint8_t                 *glyphcmds);
+
+cairo_private void
+_cairo_xcb_connection_render_composite_glyphs_16 (cairo_xcb_connection_t        *connection,
+						  uint8_t                  op,
+						  xcb_render_picture_t     src,
+						  xcb_render_picture_t     dst,
+						  xcb_render_pictformat_t  mask_format,
+						  xcb_render_glyphset_t    glyphset,
+						  int16_t                  src_x,
+						  int16_t                  src_y,
+						  uint32_t                 glyphcmds_len,
+						  uint8_t                 *glyphcmds);
+
+cairo_private void
+_cairo_xcb_connection_render_composite_glyphs_32 (cairo_xcb_connection_t        *connection,
+						  uint8_t                  op,
+						  xcb_render_picture_t     src,
+						  xcb_render_picture_t     dst,
+						  xcb_render_pictformat_t  mask_format,
+						  xcb_render_glyphset_t    glyphset,
+						  int16_t                  src_x,
+						  int16_t                  src_y,
+						  uint32_t                 glyphcmds_len,
+						  uint8_t                 *glyphcmds);
+
+cairo_private void
+_cairo_xcb_connection_render_fill_rectangles (cairo_xcb_connection_t      *connection,
+					      uint8_t                op,
+					      xcb_render_picture_t   dst,
+					      xcb_render_color_t     color,
+					      uint32_t               num_rects,
+					      xcb_rectangle_t       *rects);
+
+cairo_private void
+_cairo_xcb_connection_render_set_picture_transform (cairo_xcb_connection_t       *connection,
+						    xcb_render_picture_t    picture,
+						    xcb_render_transform_t  *transform);
+
+cairo_private void
+_cairo_xcb_connection_render_set_picture_filter (cairo_xcb_connection_t         *connection,
+						 xcb_render_picture_t      picture,
+						 uint16_t                  filter_len,
+						 char                     *filter);
+
+cairo_private void
+_cairo_xcb_connection_render_create_solid_fill (cairo_xcb_connection_t     *connection,
+						xcb_render_picture_t  picture,
+						xcb_render_color_t    color);
+
+cairo_private void
+_cairo_xcb_connection_render_create_linear_gradient (cairo_xcb_connection_t         *connection,
+						     xcb_render_picture_t      picture,
+						     xcb_render_pointfix_t     p1,
+						     xcb_render_pointfix_t     p2,
+						     uint32_t                  num_stops,
+						     xcb_render_fixed_t *stops,
+						     xcb_render_color_t *colors);
+
+cairo_private void
+_cairo_xcb_connection_render_create_radial_gradient (cairo_xcb_connection_t         *connection,
+						     xcb_render_picture_t      picture,
+						     xcb_render_pointfix_t     inner,
+						     xcb_render_pointfix_t     outer,
+						     xcb_render_fixed_t        inner_radius,
+						     xcb_render_fixed_t        outer_radius,
+						     uint32_t                  num_stops,
+						     xcb_render_fixed_t *stops,
+						     xcb_render_color_t *colors);
+
+cairo_private void
+_cairo_xcb_connection_render_create_conical_gradient (cairo_xcb_connection_t         *c,
+						      xcb_render_picture_t      picture,
+						      xcb_render_pointfix_t     center,
+						      xcb_render_fixed_t        angle,
+						      uint32_t                  num_stops,
+						      xcb_render_fixed_t *stops,
+						      xcb_render_color_t *colors);
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_proto (cairo_xcb_surface_create);
+slim_hidden_proto (cairo_xcb_surface_create_for_bitmap);
+slim_hidden_proto (cairo_xcb_surface_create_with_xrender_format);
+slim_hidden_proto (cairo_xcb_surface_set_size);
+slim_hidden_proto (cairo_xcb_surface_set_drawable);
+slim_hidden_proto (cairo_xcb_device_debug_get_precision);
+slim_hidden_proto_no_warn (cairo_xcb_device_debug_set_precision);
+slim_hidden_proto_no_warn (cairo_xcb_device_debug_cap_xrender_version);
+#endif
+
+cairo_private void
+_cairo_xcb_resources_get (cairo_xcb_screen_t *screen,
+			  cairo_xcb_resources_t *resources);
+
+#endif /* CAIRO_XCB_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-resources.c b/libs/cairo-1.16.0/src/cairo-xcb-resources.c
new file mode 100644
index 0000000..1877758
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-resources.c
@@ -0,0 +1,281 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2014 Lukas Lalinsky
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Authors:
+ *    Lukas Lalinsky <lukas@oxygene.sk>
+ *
+ * Partially on code from xftdpy.c
+ *
+ * Copyright © 2000 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+
+#include "cairo-fontconfig-private.h"
+
+static void
+parse_boolean (const char *v, cairo_bool_t *out)
+{
+    char c0, c1;
+
+    c0 = *v;
+    if (c0 == 't' || c0 == 'T' || c0 == 'y' || c0 == 'Y' || c0 == '1')
+	*out = TRUE;
+    if (c0 == 'f' || c0 == 'F' || c0 == 'n' || c0 == 'N' || c0 == '0')
+	*out = FALSE;
+    if (c0 == 'o') {
+	c1 = v[1];
+	if (c1 == 'n' || c1 == 'N')
+	    *out = TRUE;
+	if (c1 == 'f' || c1 == 'F')
+	    *out = FALSE;
+    }
+}
+
+static void
+parse_integer (const char *v, int *out)
+{
+    char *e;
+    int value;
+
+#if CAIRO_HAS_FC_FONT
+    if (FcNameConstant ((FcChar8 *) v, out))
+	return;
+#endif
+
+    value = strtol (v, &e, 0);
+    if (e != v)
+	*out = value;
+}
+
+static char *
+skip_spaces(char *str)
+{
+    while (*str == ' ' || *str == '\t' || *str == '\n')
+	str++;
+    return str;
+}
+
+struct resource_parser {
+    int buffer_size;
+    int bytes_in_buffer;
+    char* buffer;
+    cairo_xcb_resources_t *resources;
+};
+
+static cairo_bool_t
+resource_parse_line (char *name, cairo_xcb_resources_t *resources)
+{
+    char *value;
+
+    value = strchr (name, ':');
+    if (value == NULL)
+	return FALSE;
+
+    *value++ = 0;
+
+    name = skip_spaces (name);
+    value = skip_spaces (value);
+
+    if (strcmp (name, "Xft.antialias") == 0)
+	parse_boolean (value, &(resources->xft_antialias));
+    else if (strcmp (name, "Xft.lcdfilter") == 0)
+	parse_integer (value, &(resources->xft_lcdfilter));
+    else if (strcmp (name, "Xft.rgba") == 0)
+	parse_integer (value, &(resources->xft_rgba));
+    else if (strcmp (name, "Xft.hinting") == 0)
+	parse_boolean (value, &(resources->xft_hinting));
+    else if (strcmp (name, "Xft.hintstyle") == 0)
+	parse_integer (value, &(resources->xft_hintstyle));
+
+    return TRUE;
+}
+
+static int
+resource_parse_lines (struct resource_parser *parser)
+{
+    char *line, *newline;
+
+    line = parser->buffer;
+    while (1) {
+	newline = strchr (line, '\n');
+	if (newline == NULL)
+	    break;
+
+	*newline++ = 0;
+
+	if (! resource_parse_line (line, parser->resources))
+	    break;
+
+	line = newline;
+    }
+
+    return line - parser->buffer;
+}
+
+static void
+resource_parser_init (struct resource_parser *parser, cairo_xcb_resources_t *resources)
+{
+    parser->buffer_size = 0;
+    parser->bytes_in_buffer = 0;
+    parser->buffer = NULL;
+    parser->resources = resources;
+}
+
+static cairo_bool_t
+resource_parser_update (struct resource_parser *parser, const char *data, int length)
+{
+    int bytes_parsed;
+
+    if (parser->bytes_in_buffer + length + 1 > parser->buffer_size) {
+	parser->buffer_size = parser->bytes_in_buffer + length + 1;
+	parser->buffer = realloc(parser->buffer, parser->buffer_size);
+	if (! parser->buffer) {
+	    parser->buffer_size = 0;
+	    parser->bytes_in_buffer = 0;
+	    return FALSE;
+	}
+    }
+
+    memmove (parser->buffer + parser->bytes_in_buffer, data, length);
+    parser->bytes_in_buffer += length;
+    parser->buffer[parser->bytes_in_buffer] = 0;
+
+    bytes_parsed = resource_parse_lines (parser);
+
+    if (parser->bytes_in_buffer > bytes_parsed) {
+	memmove (parser->buffer, parser->buffer + bytes_parsed, parser->bytes_in_buffer - bytes_parsed);
+	parser->bytes_in_buffer -= bytes_parsed;
+    } else {
+	parser->bytes_in_buffer = 0;
+    }
+
+    return TRUE;
+}
+
+static void
+resource_parser_done (struct resource_parser *parser)
+{
+    if (parser->bytes_in_buffer > 0) {
+	parser->buffer[parser->bytes_in_buffer] = 0;
+	resource_parse_line (parser->buffer, parser->resources);
+    }
+
+    free (parser->buffer);
+}
+
+static void
+get_resources(xcb_connection_t *connection, xcb_screen_t *screen, cairo_xcb_resources_t *resources)
+{
+    xcb_get_property_cookie_t cookie;
+    xcb_get_property_reply_t *reply;
+    struct resource_parser parser;
+    int offset;
+    cairo_bool_t has_more_data;
+
+    resources->xft_antialias = TRUE;
+    resources->xft_lcdfilter = -1;
+    resources->xft_hinting = TRUE;
+    resources->xft_hintstyle = FC_HINT_FULL;
+    resources->xft_rgba = FC_RGBA_UNKNOWN;
+
+    resource_parser_init (&parser, resources);
+
+    offset = 0;
+    has_more_data = FALSE;
+    do {
+	cookie = xcb_get_property (connection, 0, screen->root, XCB_ATOM_RESOURCE_MANAGER, XCB_ATOM_STRING, offset, 1024);
+	reply = xcb_get_property_reply (connection, cookie, NULL);
+
+	if (reply) {
+	    if (reply->format == 8 && reply->type == XCB_ATOM_STRING) {
+		char *value = (char *) xcb_get_property_value (reply);
+		int length = xcb_get_property_value_length (reply);
+
+		offset += length / 4; /* X needs the offset in 'long' units */
+		has_more_data = reply->bytes_after > 0;
+
+		if (! resource_parser_update (&parser, value, length))
+		    has_more_data = FALSE; /* early exit on error */
+	    }
+
+	    free (reply);
+	}
+    } while (has_more_data);
+
+    resource_parser_done (&parser);
+}
+
+void
+_cairo_xcb_resources_get (cairo_xcb_screen_t *screen, cairo_xcb_resources_t *resources)
+{
+    get_resources (screen->connection->xcb_connection, screen->xcb_screen, resources);
+
+    if (resources->xft_rgba == FC_RGBA_UNKNOWN) {
+	switch (screen->subpixel_order) {
+	case XCB_RENDER_SUB_PIXEL_UNKNOWN:
+	    resources->xft_rgba = FC_RGBA_UNKNOWN;
+	    break;
+	case XCB_RENDER_SUB_PIXEL_HORIZONTAL_RGB:
+	    resources->xft_rgba = FC_RGBA_RGB;
+	    break;
+	case XCB_RENDER_SUB_PIXEL_HORIZONTAL_BGR:
+	    resources->xft_rgba = FC_RGBA_BGR;
+	    break;
+	case XCB_RENDER_SUB_PIXEL_VERTICAL_RGB:
+	    resources->xft_rgba = FC_RGBA_VRGB;
+	    break;
+	case XCB_RENDER_SUB_PIXEL_VERTICAL_BGR:
+	    resources->xft_rgba = FC_RGBA_VBGR;
+	    break;
+	case XCB_RENDER_SUB_PIXEL_NONE:
+	    resources->xft_rgba = FC_RGBA_NONE;
+	    break;
+	}
+    }
+}
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-screen.c b/libs/cairo-1.16.0/src/cairo-xcb-screen.c
new file mode 100644
index 0000000..0d23ad3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-screen.c
@@ -0,0 +1,494 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Authors:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+#include "cairo-list-inline.h"
+
+#include "cairo-fontconfig-private.h"
+
+static void
+_cairo_xcb_init_screen_font_options (cairo_xcb_screen_t *screen)
+{
+    cairo_xcb_resources_t res;
+    cairo_antialias_t antialias;
+    cairo_subpixel_order_t subpixel_order;
+    cairo_lcd_filter_t lcd_filter;
+    cairo_hint_style_t hint_style;
+
+    _cairo_xcb_resources_get (screen, &res);
+
+    /* the rest of the code in this function is copied from
+       _cairo_xlib_init_screen_font_options in cairo-xlib-screen.c */
+
+    if (res.xft_hinting) {
+	switch (res.xft_hintstyle) {
+	case FC_HINT_NONE:
+	    hint_style = CAIRO_HINT_STYLE_NONE;
+	    break;
+	case FC_HINT_SLIGHT:
+	    hint_style = CAIRO_HINT_STYLE_SLIGHT;
+	    break;
+	case FC_HINT_MEDIUM:
+	    hint_style = CAIRO_HINT_STYLE_MEDIUM;
+	    break;
+	case FC_HINT_FULL:
+	    hint_style = CAIRO_HINT_STYLE_FULL;
+	    break;
+	default:
+	    hint_style = CAIRO_HINT_STYLE_DEFAULT;
+	}
+    } else {
+	hint_style = CAIRO_HINT_STYLE_NONE;
+    }
+
+    switch (res.xft_rgba) {
+    case FC_RGBA_RGB:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
+	break;
+    case FC_RGBA_BGR:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
+	break;
+    case FC_RGBA_VRGB:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
+	break;
+    case FC_RGBA_VBGR:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
+	break;
+    case FC_RGBA_UNKNOWN:
+    case FC_RGBA_NONE:
+    default:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+    }
+
+    switch (res.xft_lcdfilter) {
+    case FC_LCD_NONE:
+	lcd_filter = CAIRO_LCD_FILTER_NONE;
+	break;
+    case FC_LCD_DEFAULT:
+	lcd_filter = CAIRO_LCD_FILTER_FIR5;
+	break;
+    case FC_LCD_LIGHT:
+	lcd_filter = CAIRO_LCD_FILTER_FIR3;
+	break;
+    case FC_LCD_LEGACY:
+	lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;
+	break;
+    default:
+	lcd_filter = CAIRO_LCD_FILTER_DEFAULT;
+	break;
+    }
+
+    if (res.xft_antialias) {
+	if (subpixel_order == CAIRO_SUBPIXEL_ORDER_DEFAULT)
+	    antialias = CAIRO_ANTIALIAS_GRAY;
+	else
+	    antialias = CAIRO_ANTIALIAS_SUBPIXEL;
+    } else {
+	antialias = CAIRO_ANTIALIAS_NONE;
+    }
+
+    cairo_font_options_set_hint_style (&screen->font_options, hint_style);
+    cairo_font_options_set_antialias (&screen->font_options, antialias);
+    cairo_font_options_set_subpixel_order (&screen->font_options, subpixel_order);
+    _cairo_font_options_set_lcd_filter (&screen->font_options, lcd_filter);
+    cairo_font_options_set_hint_metrics (&screen->font_options, CAIRO_HINT_METRICS_ON);
+}
+
+struct pattern_cache_entry {
+    cairo_cache_entry_t key;
+    cairo_xcb_screen_t *screen;
+    cairo_pattern_union_t pattern;
+    cairo_surface_t *picture;
+};
+
+void
+_cairo_xcb_screen_finish (cairo_xcb_screen_t *screen)
+{
+    int i;
+
+    CAIRO_MUTEX_LOCK (screen->connection->screens_mutex);
+    cairo_list_del (&screen->link);
+    CAIRO_MUTEX_UNLOCK (screen->connection->screens_mutex);
+
+    while (! cairo_list_is_empty (&screen->surfaces)) {
+	cairo_surface_t *surface;
+
+	surface = &cairo_list_first_entry (&screen->surfaces,
+					   cairo_xcb_surface_t,
+					   link)->base;
+
+	cairo_surface_finish (surface);
+    }
+
+    while (! cairo_list_is_empty (&screen->pictures)) {
+	cairo_surface_t *surface;
+
+	surface = &cairo_list_first_entry (&screen->pictures,
+					   cairo_xcb_picture_t,
+					   link)->base;
+
+	cairo_surface_finish (surface);
+    }
+
+    for (i = 0; i < screen->solid_cache_size; i++)
+	cairo_surface_destroy (screen->solid_cache[i].picture);
+
+    for (i = 0; i < ARRAY_LENGTH (screen->stock_colors); i++)
+	cairo_surface_destroy (screen->stock_colors[i]);
+
+    for (i = 0; i < ARRAY_LENGTH (screen->gc); i++) {
+	if (screen->gc_depths[i] != 0)
+	    _cairo_xcb_connection_free_gc (screen->connection, screen->gc[i]);
+    }
+
+    _cairo_cache_fini (&screen->linear_pattern_cache);
+    _cairo_cache_fini (&screen->radial_pattern_cache);
+    _cairo_freelist_fini (&screen->pattern_cache_entry_freelist);
+
+    free (screen);
+}
+
+static cairo_bool_t
+_linear_pattern_cache_entry_equal (const void *A, const void *B)
+{
+    const struct pattern_cache_entry *a = A, *b = B;
+
+    return _cairo_linear_pattern_equal (&a->pattern.gradient.linear,
+					&b->pattern.gradient.linear);
+}
+
+static cairo_bool_t
+_radial_pattern_cache_entry_equal (const void *A, const void *B)
+{
+    const struct pattern_cache_entry *a = A, *b = B;
+
+    return _cairo_radial_pattern_equal (&a->pattern.gradient.radial,
+					&b->pattern.gradient.radial);
+}
+
+static void
+_pattern_cache_entry_destroy (void *closure)
+{
+    struct pattern_cache_entry *entry = closure;
+
+    _cairo_pattern_fini (&entry->pattern.base);
+    cairo_surface_destroy (entry->picture);
+    _cairo_freelist_free (&entry->screen->pattern_cache_entry_freelist, entry);
+}
+
+static int _get_screen_index(cairo_xcb_connection_t *xcb_connection,
+			     xcb_screen_t *xcb_screen)
+{
+    int idx = 0;
+    xcb_screen_iterator_t iter = xcb_setup_roots_iterator(xcb_connection->root);
+    for (; iter.rem; xcb_screen_next(&iter), idx++)
+	if (iter.data->root == xcb_screen->root)
+	    return idx;
+
+    ASSERT_NOT_REACHED;
+}
+
+cairo_xcb_screen_t *
+_cairo_xcb_screen_get (xcb_connection_t *xcb_connection,
+		       xcb_screen_t *xcb_screen)
+{
+    cairo_xcb_connection_t *connection;
+    cairo_xcb_screen_t *screen;
+    cairo_status_t status;
+    int screen_idx;
+    int i;
+
+    connection = _cairo_xcb_connection_get (xcb_connection);
+    if (unlikely (connection == NULL))
+	return NULL;
+
+    CAIRO_MUTEX_LOCK (connection->screens_mutex);
+
+    cairo_list_foreach_entry (screen,
+			      cairo_xcb_screen_t,
+			      &connection->screens,
+			      link)
+    {
+	if (screen->xcb_screen == xcb_screen) {
+	    /* Maintain list in MRU order */
+	    if (&screen->link != connection->screens.next)
+		cairo_list_move (&screen->link, &connection->screens);
+
+	    goto unlock;
+	}
+    }
+
+    screen = _cairo_malloc (sizeof (cairo_xcb_screen_t));
+    if (unlikely (screen == NULL))
+	goto unlock;
+
+    screen_idx = _get_screen_index(connection, xcb_screen);
+
+    screen->connection = connection;
+    screen->xcb_screen = xcb_screen;
+    screen->has_font_options = FALSE;
+    screen->subpixel_order = connection->subpixel_orders[screen_idx];
+
+    _cairo_freelist_init (&screen->pattern_cache_entry_freelist,
+			  sizeof (struct pattern_cache_entry));
+    cairo_list_init (&screen->link);
+    cairo_list_init (&screen->surfaces);
+    cairo_list_init (&screen->pictures);
+
+    memset (screen->gc_depths, 0, sizeof (screen->gc_depths));
+    memset (screen->gc, 0, sizeof (screen->gc));
+
+    screen->solid_cache_size = 0;
+    for (i = 0; i < ARRAY_LENGTH (screen->stock_colors); i++)
+	screen->stock_colors[i] = NULL;
+
+    status = _cairo_cache_init (&screen->linear_pattern_cache,
+				_linear_pattern_cache_entry_equal,
+				NULL,
+				_pattern_cache_entry_destroy,
+				16);
+    if (unlikely (status))
+	goto error_screen;
+
+    status = _cairo_cache_init (&screen->radial_pattern_cache,
+				_radial_pattern_cache_entry_equal,
+				NULL,
+				_pattern_cache_entry_destroy,
+				4);
+    if (unlikely (status))
+	goto error_linear;
+
+    cairo_list_add (&screen->link, &connection->screens);
+
+unlock:
+    CAIRO_MUTEX_UNLOCK (connection->screens_mutex);
+
+    return screen;
+
+error_linear:
+    _cairo_cache_fini (&screen->linear_pattern_cache);
+error_screen:
+    CAIRO_MUTEX_UNLOCK (connection->screens_mutex);
+    free (screen);
+
+    return NULL;
+}
+
+static xcb_gcontext_t
+_create_gc (cairo_xcb_screen_t *screen,
+	    xcb_drawable_t drawable)
+{
+    uint32_t values[] = { 0 };
+
+    return _cairo_xcb_connection_create_gc (screen->connection, drawable,
+					    XCB_GC_GRAPHICS_EXPOSURES,
+					    values);
+}
+
+xcb_gcontext_t
+_cairo_xcb_screen_get_gc (cairo_xcb_screen_t *screen,
+			  xcb_drawable_t drawable,
+			  int depth)
+{
+    int i;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex));
+
+    for (i = 0; i < ARRAY_LENGTH (screen->gc); i++) {
+	if (screen->gc_depths[i] == depth) {
+	    screen->gc_depths[i] = 0;
+	    return screen->gc[i];
+	}
+    }
+
+    return _create_gc (screen, drawable);
+}
+
+void
+_cairo_xcb_screen_put_gc (cairo_xcb_screen_t *screen, int depth, xcb_gcontext_t gc)
+{
+    int i;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex));
+
+    for (i = 0; i < ARRAY_LENGTH (screen->gc); i++) {
+	if (screen->gc_depths[i] == 0)
+	    break;
+    }
+
+    if (i == ARRAY_LENGTH (screen->gc)) {
+	/* perform random substitution to ensure fair caching over depths */
+	i = rand () % ARRAY_LENGTH (screen->gc);
+	_cairo_xcb_connection_free_gc (screen->connection, screen->gc[i]);
+    }
+
+    screen->gc[i] = gc;
+    screen->gc_depths[i] = depth;
+}
+
+cairo_status_t
+_cairo_xcb_screen_store_linear_picture (cairo_xcb_screen_t *screen,
+					const cairo_linear_pattern_t *linear,
+					cairo_surface_t *picture)
+{
+    struct pattern_cache_entry *entry;
+    cairo_status_t status;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex));
+
+    entry = _cairo_freelist_alloc (&screen->pattern_cache_entry_freelist);
+    if (unlikely (entry == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    entry->key.hash = _cairo_linear_pattern_hash (_CAIRO_HASH_INIT_VALUE, linear);
+    entry->key.size = 1;
+
+    status = _cairo_pattern_init_copy (&entry->pattern.base, &linear->base.base);
+    if (unlikely (status)) {
+	_cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry);
+	return status;
+    }
+
+    entry->picture = cairo_surface_reference (picture);
+    entry->screen = screen;
+
+    status = _cairo_cache_insert (&screen->linear_pattern_cache,
+				  &entry->key);
+    if (unlikely (status)) {
+	cairo_surface_destroy (picture);
+	_cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry);
+	return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_surface_t *
+_cairo_xcb_screen_lookup_linear_picture (cairo_xcb_screen_t *screen,
+					 const cairo_linear_pattern_t *linear)
+{
+    cairo_surface_t *picture = NULL;
+    struct pattern_cache_entry tmpl;
+    struct pattern_cache_entry *entry;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex));
+
+    tmpl.key.hash = _cairo_linear_pattern_hash (_CAIRO_HASH_INIT_VALUE, linear);
+    _cairo_pattern_init_static_copy (&tmpl.pattern.base, &linear->base.base);
+
+    entry = _cairo_cache_lookup (&screen->linear_pattern_cache, &tmpl.key);
+    if (entry != NULL)
+	picture = cairo_surface_reference (entry->picture);
+
+    return picture;
+}
+
+cairo_status_t
+_cairo_xcb_screen_store_radial_picture (cairo_xcb_screen_t *screen,
+					const cairo_radial_pattern_t *radial,
+					cairo_surface_t *picture)
+{
+    struct pattern_cache_entry *entry;
+    cairo_status_t status;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex));
+
+    entry = _cairo_freelist_alloc (&screen->pattern_cache_entry_freelist);
+    if (unlikely (entry == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    entry->key.hash = _cairo_radial_pattern_hash (_CAIRO_HASH_INIT_VALUE, radial);
+    entry->key.size = 1;
+
+    status = _cairo_pattern_init_copy (&entry->pattern.base, &radial->base.base);
+    if (unlikely (status)) {
+	_cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry);
+	return status;
+    }
+
+    entry->picture = cairo_surface_reference (picture);
+    entry->screen = screen;
+
+    status = _cairo_cache_insert (&screen->radial_pattern_cache, &entry->key);
+    if (unlikely (status)) {
+	cairo_surface_destroy (picture);
+	_cairo_freelist_free (&screen->pattern_cache_entry_freelist, entry);
+	return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_surface_t *
+_cairo_xcb_screen_lookup_radial_picture (cairo_xcb_screen_t *screen,
+					 const cairo_radial_pattern_t *radial)
+{
+    cairo_surface_t *picture = NULL;
+    struct pattern_cache_entry tmpl;
+    struct pattern_cache_entry *entry;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (screen->connection->device.mutex));
+
+    tmpl.key.hash = _cairo_radial_pattern_hash (_CAIRO_HASH_INIT_VALUE, radial);
+    _cairo_pattern_init_static_copy (&tmpl.pattern.base, &radial->base.base);
+
+    entry = _cairo_cache_lookup (&screen->radial_pattern_cache, &tmpl.key);
+    if (entry != NULL)
+	picture = cairo_surface_reference (entry->picture);
+
+    return picture;
+}
+
+cairo_font_options_t *
+_cairo_xcb_screen_get_font_options (cairo_xcb_screen_t *screen)
+{
+    if (! screen->has_font_options) {
+	_cairo_font_options_init_default (&screen->font_options);
+	_cairo_font_options_set_round_glyph_positions (&screen->font_options, CAIRO_ROUND_GLYPH_POS_ON);
+
+	/* XXX: This is disabled because something seems to be merging
+	   font options incorrectly for xcb.  This effectively reverts
+	   the changes brought in git e691d242, and restores ~150 tests
+	   to resume passing.  See mailing list archives for Sep 17,
+	   2014 for more discussion. */
+	if (0 && ! _cairo_xcb_connection_acquire (screen->connection)) {
+	    _cairo_xcb_init_screen_font_options (screen);
+	    _cairo_xcb_connection_release (screen->connection);
+	}
+
+	screen->has_font_options = TRUE;
+    }
+
+    return &screen->font_options;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-shm.c b/libs/cairo-1.16.0/src/cairo-xcb-shm.c
new file mode 100644
index 0000000..763778a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-shm.c
@@ -0,0 +1,337 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+
+#include "cairo-xcb-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-mempool-private.h"
+
+#include <xcb/shm.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <errno.h>
+
+#define CAIRO_MAX_SHM_MEMORY (16*1024*1024)
+
+/* a simple buddy allocator for memory pools
+ * XXX fragmentation? use Doug Lea's malloc?
+ */
+
+typedef struct _cairo_xcb_shm_mem_block cairo_xcb_shm_mem_block_t;
+
+typedef enum {
+    PENDING_WAIT,
+    PENDING_POLL
+} shm_wait_type_t;
+
+struct _cairo_xcb_shm_mem_pool {
+    int shmid;
+    uint32_t shmseg;
+    void *shm;
+
+    cairo_mempool_t mem;
+
+    cairo_list_t link;
+};
+
+static void
+_cairo_xcb_shm_mem_pool_destroy (cairo_xcb_shm_mem_pool_t *pool)
+{
+    cairo_list_del (&pool->link);
+
+    shmdt (pool->shm);
+    _cairo_mempool_fini (&pool->mem);
+
+    free (pool);
+}
+
+static void
+_cairo_xcb_shm_info_finalize (cairo_xcb_shm_info_t *shm_info)
+{
+    cairo_xcb_connection_t *connection = shm_info->connection;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (connection->shm_mutex));
+
+    _cairo_mempool_free (&shm_info->pool->mem, shm_info->mem);
+    _cairo_freepool_free (&connection->shm_info_freelist, shm_info);
+
+    /* scan for old, unused pools - hold at least one in reserve */
+    if (! cairo_list_is_singular (&connection->shm_pools))
+    {
+	cairo_xcb_shm_mem_pool_t *pool, *next;
+	cairo_list_t head;
+
+	cairo_list_init (&head);
+	cairo_list_move (connection->shm_pools.next, &head);
+
+	cairo_list_foreach_entry_safe (pool, next, cairo_xcb_shm_mem_pool_t,
+				       &connection->shm_pools, link)
+	{
+	    if (pool->mem.free_bytes == pool->mem.max_bytes) {
+		_cairo_xcb_connection_shm_detach (connection, pool->shmseg);
+		_cairo_xcb_shm_mem_pool_destroy (pool);
+	    }
+	}
+
+	cairo_list_move (head.next, &connection->shm_pools);
+    }
+}
+
+static void
+_cairo_xcb_shm_process_pending (cairo_xcb_connection_t *connection, shm_wait_type_t wait)
+{
+    cairo_xcb_shm_info_t *info, *next;
+    xcb_get_input_focus_reply_t *reply;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (connection->shm_mutex));
+    cairo_list_foreach_entry_safe (info, next, cairo_xcb_shm_info_t,
+				   &connection->shm_pending, pending)
+    {
+	switch (wait) {
+	case PENDING_WAIT:
+	     reply = xcb_wait_for_reply (connection->xcb_connection,
+					 info->sync.sequence, NULL);
+	     break;
+	case PENDING_POLL:
+	    if (! xcb_poll_for_reply (connection->xcb_connection,
+				      info->sync.sequence,
+				      (void **) &reply, NULL))
+		/* We cannot be sure the server finished with this image yet, so
+		 * try again later. All other shm info are guaranteed to have a
+		 * larger sequence number and thus don't have to be checked. */
+		return;
+	    break;
+	default:
+	    /* silence Clang static analyzer warning */
+	    ASSERT_NOT_REACHED;
+	    reply = NULL;
+	}
+
+	free (reply);
+	cairo_list_del (&info->pending);
+	_cairo_xcb_shm_info_finalize (info);
+    }
+}
+
+cairo_int_status_t
+_cairo_xcb_connection_allocate_shm_info (cairo_xcb_connection_t *connection,
+					 size_t size,
+					 cairo_bool_t might_reuse,
+					 cairo_xcb_shm_info_t **shm_info_out)
+{
+    cairo_xcb_shm_info_t *shm_info;
+    cairo_xcb_shm_mem_pool_t *pool, *next;
+    size_t bytes, maxbits = 16, minbits = 8;
+    size_t shm_allocated = 0;
+    void *mem = NULL;
+    cairo_status_t status;
+
+    assert (connection->flags & CAIRO_XCB_HAS_SHM);
+
+    CAIRO_MUTEX_LOCK (connection->shm_mutex);
+    _cairo_xcb_shm_process_pending (connection, PENDING_POLL);
+
+    if (might_reuse) {
+	cairo_list_foreach_entry (shm_info, cairo_xcb_shm_info_t,
+		&connection->shm_pending, pending) {
+	    if (shm_info->size >= size) {
+		cairo_list_del (&shm_info->pending);
+		CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+
+		xcb_discard_reply (connection->xcb_connection, shm_info->sync.sequence);
+		shm_info->sync.sequence = XCB_NONE;
+
+		*shm_info_out = shm_info;
+		return CAIRO_STATUS_SUCCESS;
+	    }
+	}
+    }
+
+    cairo_list_foreach_entry_safe (pool, next, cairo_xcb_shm_mem_pool_t,
+				   &connection->shm_pools, link)
+    {
+	if (pool->mem.free_bytes > size) {
+	    mem = _cairo_mempool_alloc (&pool->mem, size);
+	    if (mem != NULL) {
+		/* keep the active pools towards the front */
+		cairo_list_move (&pool->link, &connection->shm_pools);
+		goto allocate_shm_info;
+	    }
+	}
+	/* scan for old, unused pools */
+	if (pool->mem.free_bytes == pool->mem.max_bytes) {
+	    _cairo_xcb_connection_shm_detach (connection,
+					      pool->shmseg);
+	    _cairo_xcb_shm_mem_pool_destroy (pool);
+	} else {
+	    shm_allocated += pool->mem.max_bytes;
+	}
+    }
+
+    if (unlikely (shm_allocated >= CAIRO_MAX_SHM_MEMORY)) {
+	CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pool = _cairo_malloc (sizeof (cairo_xcb_shm_mem_pool_t));
+    if (unlikely (pool == NULL)) {
+	CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    bytes = 1 << maxbits;
+    while (bytes <= size)
+	bytes <<= 1, maxbits++;
+    bytes <<= 3;
+
+    do {
+	pool->shmid = shmget (IPC_PRIVATE, bytes, IPC_CREAT | 0600);
+	if (pool->shmid != -1)
+	    break;
+
+	/* If the allocation failed because we asked for too much memory, we try
+	 * again with a smaller request, as long as our allocation still fits. */
+	bytes >>= 1;
+	if (errno != EINVAL || bytes < size)
+	    break;
+    } while (TRUE);
+    if (pool->shmid == -1) {
+	int err = errno;
+	if (! (err == EINVAL || err == ENOMEM))
+	    connection->flags &= ~CAIRO_XCB_HAS_SHM;
+	free (pool);
+	CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    pool->shm = shmat (pool->shmid, NULL, 0);
+    if (unlikely (pool->shm == (char *) -1)) {
+	shmctl (pool->shmid, IPC_RMID, NULL);
+	free (pool);
+	CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    status = _cairo_mempool_init (&pool->mem, pool->shm, bytes,
+				  minbits, maxbits - minbits + 1);
+    if (unlikely (status)) {
+	shmdt (pool->shm);
+	free (pool);
+	CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+	return status;
+    }
+
+    pool->shmseg = _cairo_xcb_connection_shm_attach (connection, pool->shmid, FALSE);
+    shmctl (pool->shmid, IPC_RMID, NULL);
+
+    cairo_list_add (&pool->link, &connection->shm_pools);
+    mem = _cairo_mempool_alloc (&pool->mem, size);
+
+  allocate_shm_info:
+    shm_info = _cairo_freepool_alloc (&connection->shm_info_freelist);
+    if (unlikely (shm_info == NULL)) {
+	_cairo_mempool_free (&pool->mem, mem);
+	CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    shm_info->connection = connection;
+    shm_info->pool = pool;
+    shm_info->shm = pool->shmseg;
+    shm_info->size = size;
+    shm_info->offset = (char *) mem - (char *) pool->shm;
+    shm_info->mem = mem;
+    shm_info->sync.sequence = XCB_NONE;
+
+    /* scan for old, unused pools */
+    cairo_list_foreach_entry_safe (pool, next, cairo_xcb_shm_mem_pool_t,
+				   &connection->shm_pools, link)
+    {
+	if (pool->mem.free_bytes == pool->mem.max_bytes) {
+	    _cairo_xcb_connection_shm_detach (connection,
+					      pool->shmseg);
+	    _cairo_xcb_shm_mem_pool_destroy (pool);
+	}
+    }
+    CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+
+    *shm_info_out = shm_info;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_xcb_shm_info_destroy (cairo_xcb_shm_info_t *shm_info)
+{
+    cairo_xcb_connection_t *connection = shm_info->connection;
+
+    /* We can only return shm_info->mem to the allocator when we can be sure
+     * that the X server no longer reads from it. Since the X server processes
+     * requests in order, we send a GetInputFocus here.
+     * _cairo_xcb_shm_process_pending () will later check if the reply for that
+     * request was received and then actually mark this memory area as free. */
+
+    CAIRO_MUTEX_LOCK (connection->shm_mutex);
+    assert (shm_info->sync.sequence == XCB_NONE);
+    shm_info->sync = xcb_get_input_focus (connection->xcb_connection);
+
+    cairo_list_init (&shm_info->pending);
+    cairo_list_add_tail (&shm_info->pending, &connection->shm_pending);
+    CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+}
+
+void
+_cairo_xcb_connection_shm_mem_pools_flush (cairo_xcb_connection_t *connection)
+{
+    CAIRO_MUTEX_LOCK (connection->shm_mutex);
+    _cairo_xcb_shm_process_pending (connection, PENDING_WAIT);
+    CAIRO_MUTEX_UNLOCK (connection->shm_mutex);
+}
+
+void
+_cairo_xcb_connection_shm_mem_pools_fini (cairo_xcb_connection_t *connection)
+{
+    assert (cairo_list_is_empty (&connection->shm_pending));
+    while (! cairo_list_is_empty (&connection->shm_pools)) {
+	_cairo_xcb_shm_mem_pool_destroy (cairo_list_first_entry (&connection->shm_pools,
+								 cairo_xcb_shm_mem_pool_t,
+								 link));
+    }
+}
+
+#endif /* CAIRO_HAS_XCB_SHM_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-surface-core.c b/libs/cairo-1.16.0/src/cairo-xcb-surface-core.c
new file mode 100644
index 0000000..91c0ff9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-surface-core.c
@@ -0,0 +1,641 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-xcb-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+/* XXX dithering */
+
+typedef struct _cairo_xcb_pixmap {
+    cairo_surface_t base;
+
+    cairo_xcb_connection_t *connection;
+    cairo_xcb_screen_t *screen;
+
+    cairo_surface_t *owner;
+    xcb_pixmap_t pixmap;
+    int width;
+    int height;
+    int depth;
+    int x0, y0;
+    cairo_bool_t repeat;
+} cairo_xcb_pixmap_t;
+
+static cairo_status_t
+_cairo_xcb_pixmap_finish (void *abstract_surface)
+{
+    cairo_xcb_pixmap_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (surface->owner != NULL) {
+	cairo_surface_destroy (surface->owner);
+    } else {
+	status = _cairo_xcb_connection_acquire (surface->connection);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_xcb_connection_free_pixmap (surface->connection,
+					   surface->pixmap);
+	_cairo_xcb_connection_release (surface->connection);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t _cairo_xcb_pixmap_backend = {
+    CAIRO_SURFACE_TYPE_XCB,
+    _cairo_xcb_pixmap_finish,
+};
+
+static cairo_xcb_pixmap_t *
+_cairo_xcb_pixmap_create (cairo_xcb_surface_t *target,
+			  int width, int height)
+{
+    cairo_xcb_pixmap_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_xcb_pixmap_t));
+    if (unlikely (surface == NULL))
+	return (cairo_xcb_pixmap_t *)
+	    _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_xcb_pixmap_backend,
+			 NULL,
+			 target->base.content,
+			 FALSE); /* is_vector */
+
+    surface->connection = target->connection;
+    surface->screen = target->screen;
+    surface->owner = NULL;
+    surface->width = width;
+    surface->height = height;
+    surface->depth = target->depth;
+    surface->x0 = surface->y0 = 0;
+    surface->repeat = FALSE;
+
+    surface->pixmap =
+	_cairo_xcb_connection_create_pixmap (surface->connection,
+					     surface->depth,
+					     target->drawable,
+					     width, height);
+
+    return surface;
+}
+
+static cairo_xcb_pixmap_t *
+_cairo_xcb_pixmap_copy (cairo_xcb_surface_t *target)
+{
+    cairo_xcb_pixmap_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_xcb_pixmap_t));
+    if (unlikely (surface == NULL))
+	return (cairo_xcb_pixmap_t *)
+	    _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_xcb_pixmap_backend,
+			 NULL,
+			 target->base.content,
+			 FALSE); /* is_vector */
+
+    surface->connection = target->connection;
+    surface->screen = target->screen;
+    surface->pixmap = target->drawable;
+    surface->owner = cairo_surface_reference (&target->base);
+    surface->width = target->width;
+    surface->height = target->height;
+    surface->depth = target->depth;
+    surface->x0 = surface->y0 = 0;
+    surface->repeat = FALSE;
+
+    return surface;
+}
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+static cairo_status_t
+_cairo_xcb_shm_image_create_shm (cairo_xcb_connection_t *connection,
+				 pixman_format_code_t pixman_format,
+				 int width, int height,
+				 cairo_image_surface_t **image_out,
+				 cairo_xcb_shm_info_t **shm_info_out)
+{
+    cairo_surface_t *image = NULL;
+    cairo_xcb_shm_info_t *shm_info = NULL;
+    cairo_status_t status;
+    size_t size, stride;
+
+    if (! (connection->flags & CAIRO_XCB_HAS_SHM))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (unlikely (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    stride = CAIRO_STRIDE_FOR_WIDTH_BPP (width, PIXMAN_FORMAT_BPP (pixman_format));
+    size = stride * height;
+    if (size <= CAIRO_XCB_SHM_SMALL_IMAGE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_xcb_connection_allocate_shm_info (connection, size,
+						      FALSE, &shm_info);
+    if (unlikely (status))
+	return status;
+
+    image = _cairo_image_surface_create_with_pixman_format (shm_info->mem,
+							    pixman_format,
+							    width, height,
+							    stride);
+    status = image->status;
+    if (unlikely (status)) {
+	_cairo_xcb_shm_info_destroy (shm_info);
+	return status;
+    }
+
+    status = _cairo_user_data_array_set_data (&image->user_data,
+					      (const cairo_user_data_key_t *) connection,
+					      shm_info,
+					      (cairo_destroy_func_t) _cairo_xcb_shm_info_destroy);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	_cairo_xcb_shm_info_destroy (shm_info);
+	return status;
+    }
+
+    *image_out = (cairo_image_surface_t *) image;
+    *shm_info_out = shm_info;
+    return CAIRO_STATUS_SUCCESS;
+}
+#else
+static cairo_status_t
+_cairo_xcb_shm_image_create_shm (cairo_xcb_connection_t *connection,
+				 pixman_format_code_t pixman_format,
+				 int width, int height,
+				 cairo_image_surface_t **image_out,
+				 cairo_xcb_shm_info_t **shm_info_out)
+{
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+#endif
+
+cairo_status_t
+_cairo_xcb_shm_image_create (cairo_xcb_connection_t *connection,
+			     pixman_format_code_t pixman_format,
+			     int width, int height,
+			     cairo_image_surface_t **image_out,
+			     cairo_xcb_shm_info_t **shm_info_out)
+{
+    cairo_surface_t *image = NULL;
+    cairo_xcb_shm_info_t *shm_info = NULL;
+    cairo_status_t status;
+
+    status = _cairo_xcb_shm_image_create_shm (connection,
+					      pixman_format,
+					      width,
+					      height,
+					      image_out,
+					      shm_info_out);
+
+    if (status != CAIRO_STATUS_SUCCESS) {
+	image = _cairo_image_surface_create_with_pixman_format (NULL,
+								pixman_format,
+								width, height,
+								0);
+	status = image->status;
+	if (unlikely (status))
+	    return status;
+
+	*image_out = (cairo_image_surface_t *) image;
+	*shm_info_out = shm_info;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_xcb_pixmap_t *
+_pixmap_from_image (cairo_xcb_surface_t *target,
+		    xcb_render_pictformat_t format,
+		    cairo_image_surface_t *image,
+		    cairo_xcb_shm_info_t *shm_info)
+{
+    xcb_gcontext_t gc;
+    cairo_xcb_pixmap_t *pixmap;
+
+    pixmap = _cairo_xcb_pixmap_create (target,
+				       image->width,
+				       image->height);
+    if (unlikely (pixmap->base.status))
+	return pixmap;
+
+    gc = _cairo_xcb_screen_get_gc (target->screen, pixmap->pixmap, image->depth);
+
+    if (shm_info != NULL) {
+	_cairo_xcb_connection_shm_put_image (target->connection,
+					     pixmap->pixmap, gc,
+					     image->width, image->height,
+					     0, 0,
+					     image->width, image->height,
+					     0, 0,
+					     image->depth,
+					     shm_info->shm,
+					     shm_info->offset);
+    } else {
+	int len;
+
+	/* Do we need to trim the image? */
+	len = CAIRO_STRIDE_FOR_WIDTH_BPP (image->width,
+					  PIXMAN_FORMAT_BPP (image->pixman_format));
+	if (len == image->stride) {
+	    _cairo_xcb_connection_put_image (target->connection,
+					     pixmap->pixmap, gc,
+					     image->width, image->height,
+					     0, 0,
+					     image->depth,
+					     image->stride,
+					     image->data);
+	} else {
+	    _cairo_xcb_connection_put_subimage (target->connection,
+						pixmap->pixmap, gc,
+						0, 0,
+						image->width, image->height,
+						PIXMAN_FORMAT_BPP (image->pixman_format) / 8,
+						image->stride,
+						0, 0,
+						image->depth,
+						image->data);
+
+	}
+    }
+
+    _cairo_xcb_screen_put_gc (target->screen, image->depth, gc);
+
+    return pixmap;
+}
+
+static cairo_xcb_pixmap_t *
+_render_to_pixmap (cairo_xcb_surface_t *target,
+		   const cairo_pattern_t *pattern,
+		   const cairo_rectangle_int_t *extents)
+{
+    cairo_image_surface_t *image;
+    cairo_xcb_shm_info_t *shm_info;
+    cairo_pattern_union_t copy;
+    cairo_status_t status;
+    cairo_xcb_pixmap_t *pixmap;
+
+    status = _cairo_xcb_shm_image_create (target->screen->connection,
+					  target->pixman_format,
+					  extents->width, extents->height,
+					  &image, &shm_info);
+    if (unlikely (status))
+	return (cairo_xcb_pixmap_t *) _cairo_surface_create_in_error (status);
+
+    _cairo_pattern_init_static_copy (&copy.base, pattern);
+    cairo_matrix_translate (&copy.base.matrix, -extents->x, -extents->y);
+    status = _cairo_surface_paint (&image->base,
+				   CAIRO_OPERATOR_SOURCE,
+				   &copy.base,
+				   NULL);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&image->base);
+	return (cairo_xcb_pixmap_t *) _cairo_surface_create_in_error (status);
+    }
+
+    pixmap = _pixmap_from_image (target, target->xrender_format, image, shm_info);
+    cairo_surface_destroy (&image->base);
+
+    if (unlikely (pixmap->base.status))
+	return pixmap;
+
+    pixmap->x0 = -extents->x;
+    pixmap->y0 = -extents->y;
+    return pixmap;
+}
+
+static cairo_xcb_pixmap_t *
+_copy_to_pixmap (cairo_xcb_surface_t *source)
+{
+    cairo_xcb_pixmap_t *pixmap;
+
+    /* If the source may be a window, we need to copy it and its children
+     * via a temporary pixmap so that we can IncludeInferiors on the source
+     * and use ClipByChildren on the destination.
+     */
+    if (source->owns_pixmap) {
+	pixmap = _cairo_xcb_pixmap_copy (source);
+	if (unlikely (pixmap->base.status))
+	    return pixmap;
+    } else {
+	uint32_t values[1];
+	xcb_gcontext_t gc;
+
+	pixmap = _cairo_xcb_pixmap_create (source,
+					   source->width,
+					   source->height);
+	if (unlikely (pixmap->base.status))
+	    return pixmap;
+
+	gc = _cairo_xcb_screen_get_gc (source->screen,
+				       pixmap->pixmap,
+				       pixmap->depth);
+
+	values[0] = TRUE;
+	_cairo_xcb_connection_change_gc (pixmap->connection, gc,
+					 XCB_GC_SUBWINDOW_MODE, values);
+
+	_cairo_xcb_connection_copy_area (pixmap->connection,
+					 source->drawable,
+					 pixmap->pixmap, gc,
+					 0, 0,
+					 0, 0,
+					 source->width,
+					 source->height);
+
+	values[0] = FALSE;
+	_cairo_xcb_connection_change_gc (pixmap->connection, gc,
+					 XCB_GC_SUBWINDOW_MODE, values);
+
+	_cairo_xcb_screen_put_gc (source->screen,
+				  pixmap->depth,
+				  gc);
+    }
+
+    return pixmap;
+}
+static cairo_xcb_pixmap_t *
+_cairo_xcb_surface_pixmap (cairo_xcb_surface_t *target,
+			   const cairo_surface_pattern_t *pattern,
+			   const cairo_rectangle_int_t *extents,
+			   int tx, int ty)
+{
+    cairo_surface_t *source;
+    cairo_xcb_pixmap_t *pixmap;
+
+    source =  pattern->surface;
+    pixmap = (cairo_xcb_pixmap_t *)
+	_cairo_surface_has_snapshot (source, &_cairo_xcb_pixmap_backend);
+    if (pixmap != NULL && pixmap->screen == target->screen)
+	return (cairo_xcb_pixmap_t *) cairo_surface_reference (&pixmap->base);
+
+    if (_cairo_surface_is_xcb(source) &&
+	((cairo_xcb_surface_t *) source)->screen == target->screen)
+    {
+	cairo_xcb_surface_t *xcb_source = (cairo_xcb_surface_t *) source;
+
+	if (xcb_source->depth == target->depth)
+	    pixmap = _copy_to_pixmap (xcb_source);
+    }
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+    else if (source->type == CAIRO_SURFACE_TYPE_XLIB &&
+	     ((cairo_xlib_xcb_surface_t *) source)->xcb->screen == target->screen)
+    {
+	cairo_xcb_surface_t *xcb_source = ((cairo_xlib_xcb_surface_t *) source)->xcb;
+
+	if (xcb_source->depth == target->depth)
+	    pixmap = _copy_to_pixmap (xcb_source);
+    }
+#endif
+
+    if (pixmap == NULL) {
+	cairo_rectangle_int_t rect;
+
+	if (! _cairo_surface_get_extents (source, &rect)) {
+	    rect.x = rect.y = 0;
+	    rect.width  = target->width;
+	    rect.height = target->height;
+	}
+
+	pixmap = _render_to_pixmap (target, &pattern->base, &rect);
+    }
+
+    if (unlikely (pixmap->base.status))
+	return pixmap;
+
+    _cairo_surface_attach_snapshot (source, &pixmap->base, NULL);
+
+    if (pattern->base.extend != CAIRO_EXTEND_NONE) {
+	if (extents->x < 0 || extents->y < 0 ||
+	    extents->x + extents->width  > pixmap->width ||
+	    extents->y + extents->height > pixmap->height)
+	{
+	    pixmap->repeat = TRUE;
+	}
+    }
+
+    pixmap->x0 += tx;
+    pixmap->y0 += ty;
+
+    return pixmap;
+}
+
+static cairo_xcb_pixmap_t *
+_cairo_xcb_pixmap_for_pattern (cairo_xcb_surface_t *target,
+			       const cairo_pattern_t *pattern,
+			       const cairo_rectangle_int_t *extents)
+{
+    int tx, ty;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	/* Core can only perform a native, unscaled blit, but can handle tiles */
+	if (_cairo_matrix_is_integer_translation (&pattern->matrix, &tx, &ty)) {
+	    switch (pattern->extend) {
+	    case CAIRO_EXTEND_NONE:
+	    case CAIRO_EXTEND_REPEAT:
+		return _cairo_xcb_surface_pixmap (target,
+						  (cairo_surface_pattern_t *) pattern,
+						  extents, tx, ty);
+
+	    default:
+	    case CAIRO_EXTEND_PAD:
+	    case CAIRO_EXTEND_REFLECT:
+		break;
+	    }
+	}
+	/* fallthrough */
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _render_to_pixmap (target, pattern, extents);
+
+    default:
+    case CAIRO_PATTERN_TYPE_SOLID:
+	ASSERT_NOT_REACHED;
+	return NULL;
+    }
+}
+
+cairo_status_t
+_cairo_xcb_surface_core_copy_boxes (cairo_xcb_surface_t		*dst,
+				   const cairo_pattern_t	*src_pattern,
+				   const cairo_rectangle_int_t	*extents,
+				   const cairo_boxes_t		*boxes)
+{
+    cairo_xcb_pixmap_t *src;
+    const struct _cairo_boxes_chunk *chunk;
+    xcb_gcontext_t gc;
+    cairo_status_t status;
+
+    status = _cairo_xcb_connection_acquire (dst->connection);
+    if (unlikely (status))
+	return status;
+
+    src = _cairo_xcb_pixmap_for_pattern (dst, src_pattern, extents);
+    status = src->base.status;
+    if (unlikely (status))
+	goto CLEANUP_CONNECTION;
+
+    assert (src->depth == dst->depth);
+
+    gc = _cairo_xcb_screen_get_gc (dst->screen, src->pixmap, src->depth);
+
+    if (src->repeat) {
+	uint32_t mask =
+	    XCB_GC_FILL_STYLE |
+	    XCB_GC_TILE |
+	    XCB_GC_TILE_STIPPLE_ORIGIN_X |
+	    XCB_GC_TILE_STIPPLE_ORIGIN_Y;
+	uint32_t values[] = {
+	    XCB_FILL_STYLE_TILED,
+	    src->pixmap,
+	    - src->x0, - src->y0,
+	};
+	xcb_rectangle_t *xcb_rects;
+
+	_cairo_xcb_connection_change_gc (dst->connection, gc, mask, values);
+
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    int i;
+
+	    xcb_rects = (xcb_rectangle_t *) chunk->base;
+
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
+		int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
+		int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
+		int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
+
+		xcb_rects[i].x = x1;
+		xcb_rects[i].y = y1;
+		xcb_rects[i].width  = x2 - x1;
+		xcb_rects[i].height = y2 - y1;
+	    }
+	    _cairo_xcb_connection_poly_fill_rectangle (dst->connection,
+						       dst->drawable,
+						       gc, chunk->count, xcb_rects);
+	}
+
+	values[0] = 0;
+	_cairo_xcb_connection_change_gc (dst->connection, gc, XCB_GC_FILL_STYLE, values);
+    } else {
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    int i;
+
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
+		int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
+		int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
+		int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
+
+		_cairo_xcb_connection_copy_area (dst->connection,
+						 src->pixmap,
+						 dst->drawable, gc,
+						 src->x0 + x1,
+						 src->y0 + y1,
+						 x1, y1,
+						 x2 - x1, y2 - y1);
+	    }
+	}
+    }
+
+    _cairo_xcb_screen_put_gc (dst->screen, src->depth, gc);
+    cairo_surface_destroy (&src->base);
+
+  CLEANUP_CONNECTION:
+    _cairo_xcb_connection_release (dst->connection);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_xcb_surface_core_fill_boxes (cairo_xcb_surface_t *dst,
+				    const cairo_color_t	*color,
+				    cairo_boxes_t *boxes)
+{
+    struct _cairo_boxes_chunk *chunk;
+    xcb_gcontext_t gc;
+    cairo_status_t status;
+
+    status = _cairo_xcb_connection_acquire (dst->connection);
+    if (unlikely (status))
+	return status;
+
+    gc = _cairo_xcb_screen_get_gc (dst->screen, dst->drawable, dst->depth);
+
+#if 0
+    xcb_pixmap_t source;
+
+    source = _dither_source (dst, color);
+    XSetTSOrigin (surface->dpy, gc, 0, 0);
+    XSetTile (surface->dpy, gc, source);
+#endif
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	xcb_rectangle_t *xcb_rects;
+	int i;
+
+	xcb_rects = (xcb_rectangle_t *) chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_round (chunk->base[i].p1.x);
+	    int x2 = _cairo_fixed_integer_round (chunk->base[i].p2.x);
+	    int y1 = _cairo_fixed_integer_round (chunk->base[i].p1.y);
+	    int y2 = _cairo_fixed_integer_round (chunk->base[i].p2.y);
+
+	    xcb_rects[i].x = x1;
+	    xcb_rects[i].y = y1;
+	    xcb_rects[i].width  = x2 - x1;
+	    xcb_rects[i].height = y2 - y1;
+	}
+
+	_cairo_xcb_connection_poly_fill_rectangle (dst->connection,
+						   dst->drawable, gc,
+						   chunk->count, xcb_rects);
+    }
+
+    _cairo_xcb_screen_put_gc (dst->screen, dst->depth, gc);
+    _cairo_xcb_connection_release (dst->connection);
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-surface-render.c b/libs/cairo-1.16.0/src/cairo-xcb-surface-render.c
new file mode 100644
index 0000000..42f27c7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-surface-render.c
@@ -0,0 +1,4880 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb-private.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-clip-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-traps-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-paginated-private.h"
+#include "cairo-pattern-inline.h"
+
+#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
+
+static cairo_status_t
+_clip_and_composite_boxes (cairo_xcb_surface_t *dst,
+			   cairo_operator_t op,
+			   const cairo_pattern_t *src,
+			   cairo_boxes_t *boxes,
+			   cairo_composite_rectangles_t *extents);
+
+static inline cairo_xcb_connection_t *
+_picture_to_connection (cairo_xcb_picture_t *picture)
+{
+    return (cairo_xcb_connection_t *) picture->base.device;
+}
+
+static void
+_cairo_xcb_surface_ensure_picture (cairo_xcb_surface_t *surface);
+
+static uint32_t
+hars_petruska_f54_1_random (void)
+{
+#define rol(x,k) ((x << k) | (x >> (32-k)))
+    static uint32_t x;
+    return x = (x ^ rol (x, 5) ^ rol (x, 24)) + 0x37798849;
+#undef rol
+}
+
+static cairo_status_t
+_cairo_xcb_picture_finish (void *abstract_surface)
+{
+    cairo_xcb_picture_t *surface = abstract_surface;
+    cairo_xcb_connection_t *connection = _picture_to_connection (surface);
+    cairo_status_t status;
+
+    status = _cairo_xcb_connection_acquire (connection);
+    cairo_list_del (&surface->link);
+    if (unlikely (status))
+	return status;
+
+    _cairo_xcb_connection_render_free_picture (connection, surface->picture);
+
+    _cairo_xcb_connection_release (connection);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t _cairo_xcb_picture_backend = {
+    CAIRO_SURFACE_TYPE_XCB,
+    _cairo_xcb_picture_finish,
+};
+
+static const struct xcb_render_transform_t identity_transform = {
+    1 << 16, 0, 0,
+    0, 1 << 16, 0,
+    0, 0, 1 << 16,
+};
+
+static cairo_xcb_picture_t *
+_cairo_xcb_picture_create (cairo_xcb_screen_t *screen,
+			   pixman_format_code_t pixman_format,
+			   xcb_render_pictformat_t xrender_format,
+			   int width, int height)
+{
+    cairo_xcb_picture_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_xcb_picture_t));
+    if (unlikely (surface == NULL))
+	return (cairo_xcb_picture_t *)
+	    _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_xcb_picture_backend,
+			 &screen->connection->device,
+			 _cairo_content_from_pixman_format (pixman_format),
+			 FALSE); /* is_vector */
+
+    cairo_list_add (&surface->link, &screen->pictures);
+
+    surface->screen = screen;
+    surface->picture = _cairo_xcb_connection_get_xid (screen->connection);
+    surface->pixman_format = pixman_format;
+    surface->xrender_format = xrender_format;
+
+    surface->x0 = surface->y0 = 0;
+    surface->x = surface->y = 0;
+    surface->width = width;
+    surface->height = height;
+
+    surface->transform = identity_transform;
+    surface->extend = CAIRO_EXTEND_NONE;
+    surface->filter = CAIRO_FILTER_NEAREST;
+    surface->has_component_alpha = FALSE;
+
+    return surface;
+}
+
+static inline cairo_bool_t
+_operator_is_supported (uint32_t flags, cairo_operator_t op)
+{
+    if (op <= CAIRO_OPERATOR_SATURATE)
+	return TRUE;
+
+    /* Can we use PDF operators? */
+#if CAIRO_XCB_RENDER_AT_LEAST(0, 11)
+    if (op <= CAIRO_OPERATOR_HSL_LUMINOSITY)
+	return flags & CAIRO_XCB_RENDER_HAS_PDF_OPERATORS;
+#endif
+
+    return FALSE;
+}
+
+static int
+_render_operator (cairo_operator_t op)
+{
+#define C(x,y) case CAIRO_OPERATOR_##x: return XCB_RENDER_PICT_OP_##y
+    switch (op) {
+    C(CLEAR, CLEAR);
+    C(SOURCE, SRC);
+
+    C(OVER, OVER);
+    C(IN, IN);
+    C(OUT, OUT);
+    C(ATOP, ATOP);
+
+    C(DEST, DST);
+    C(DEST_OVER, OVER_REVERSE);
+    C(DEST_IN, IN_REVERSE);
+    C(DEST_OUT, OUT_REVERSE);
+    C(DEST_ATOP, ATOP_REVERSE);
+
+    C(XOR, XOR);
+    C(ADD, ADD);
+    C(SATURATE, SATURATE);
+
+    /* PDF operators were added in RENDER 0.11, check if the xcb headers have
+     * the defines, else fall through to the default case. */
+#if CAIRO_XCB_RENDER_AT_LEAST(0, 11)
+#define BLEND(x,y) C(x,y)
+#else
+#define BLEND(x,y) case CAIRO_OPERATOR_##x:
+#endif
+    BLEND(MULTIPLY, MULTIPLY);
+    BLEND(SCREEN, SCREEN);
+    BLEND(OVERLAY, OVERLAY);
+    BLEND(DARKEN, DARKEN);
+    BLEND(LIGHTEN, LIGHTEN);
+    BLEND(COLOR_DODGE, COLOR_DODGE);
+    BLEND(COLOR_BURN, COLOR_BURN);
+    BLEND(HARD_LIGHT, HARD_LIGHT);
+    BLEND(SOFT_LIGHT, SOFT_LIGHT);
+    BLEND(DIFFERENCE, DIFFERENCE);
+    BLEND(EXCLUSION, EXCLUSION);
+    BLEND(HSL_HUE, HSL_HUE);
+    BLEND(HSL_SATURATION, HSL_SATURATION);
+    BLEND(HSL_COLOR, HSL_COLOR);
+    BLEND(HSL_LUMINOSITY, HSL_LUMINOSITY);
+
+    default:
+	ASSERT_NOT_REACHED;
+	return XCB_RENDER_PICT_OP_OVER;
+    }
+}
+
+static cairo_status_t
+_cairo_xcb_surface_set_clip_region (cairo_xcb_surface_t *surface,
+				    cairo_region_t	*region)
+{
+    xcb_rectangle_t stack_rects[CAIRO_STACK_ARRAY_LENGTH (xcb_rectangle_t)];
+    xcb_rectangle_t *rects = stack_rects;
+    int i, num_rects;
+
+    num_rects = cairo_region_num_rectangles (region);
+
+    if (num_rects > ARRAY_LENGTH (stack_rects)) {
+	rects = _cairo_malloc_ab (num_rects, sizeof (xcb_rectangle_t));
+	if (unlikely (rects == NULL)) {
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+    }
+
+    for (i = 0; i < num_rects; i++) {
+	cairo_rectangle_int_t rect;
+
+	cairo_region_get_rectangle (region, i, &rect);
+
+	rects[i].x = rect.x;
+	rects[i].y = rect.y;
+	rects[i].width  = rect.width;
+	rects[i].height = rect.height;
+    }
+
+    _cairo_xcb_connection_render_set_picture_clip_rectangles (surface->connection,
+							      surface->picture,
+							      0, 0,
+							      num_rects, rects);
+
+    if (rects != stack_rects)
+	free (rects);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_xcb_surface_clear_clip_region (cairo_xcb_surface_t *surface)
+{
+    uint32_t values[] = { XCB_NONE };
+    _cairo_xcb_connection_render_change_picture (surface->connection,
+						 surface->picture,
+						 XCB_RENDER_CP_CLIP_MASK,
+						 values);
+}
+
+static void
+_cairo_xcb_surface_set_precision (cairo_xcb_surface_t	*surface,
+				  cairo_antialias_t	 antialias)
+{
+    cairo_xcb_connection_t *connection = surface->connection;
+    uint32_t precision;
+
+    if (connection->force_precision != -1)
+	    precision = connection->force_precision;
+    else switch (antialias) {
+    default:
+    case CAIRO_ANTIALIAS_DEFAULT:
+    case CAIRO_ANTIALIAS_GRAY:
+    case CAIRO_ANTIALIAS_NONE:
+    case CAIRO_ANTIALIAS_FAST:
+    case CAIRO_ANTIALIAS_GOOD:
+	precision = XCB_RENDER_POLY_MODE_IMPRECISE;
+	break;
+    case CAIRO_ANTIALIAS_SUBPIXEL:
+    case CAIRO_ANTIALIAS_BEST:
+	precision = XCB_RENDER_POLY_MODE_PRECISE;
+	break;
+    }
+
+    if (surface->precision != precision) {
+	_cairo_xcb_connection_render_change_picture (connection,
+						     surface->picture,
+						     XCB_RENDER_CP_POLY_MODE,
+						     &precision);
+	surface->precision = precision;
+    }
+}
+
+
+static void
+_cairo_xcb_surface_ensure_picture (cairo_xcb_surface_t *surface)
+{
+    assert (surface->fallback == NULL);
+    if (surface->picture == XCB_NONE) {
+	uint32_t values[1];
+	uint32_t flags = 0;
+
+	if (surface->precision != XCB_RENDER_POLY_MODE_PRECISE) {
+	    flags |= XCB_RENDER_CP_POLY_MODE;
+	    values[0] = surface->precision;
+	}
+
+	surface->picture = _cairo_xcb_connection_get_xid (surface->connection);
+	_cairo_xcb_connection_render_create_picture (surface->connection,
+						     surface->picture,
+						     surface->drawable,
+						     surface->xrender_format,
+						     flags, values);
+    }
+}
+
+static cairo_xcb_picture_t *
+_picture_from_image (cairo_xcb_surface_t *target,
+		     xcb_render_pictformat_t format,
+		     cairo_image_surface_t *image,
+		     cairo_xcb_shm_info_t *shm_info)
+{
+    xcb_pixmap_t pixmap;
+    xcb_gcontext_t gc;
+    cairo_xcb_picture_t *picture;
+
+    pixmap = _cairo_xcb_connection_create_pixmap (target->connection,
+						  image->depth,
+						  target->drawable,
+						  image->width, image->height);
+
+    gc = _cairo_xcb_screen_get_gc (target->screen, pixmap, image->depth);
+
+    if (shm_info != NULL) {
+	_cairo_xcb_connection_shm_put_image (target->connection,
+					     pixmap, gc,
+					     image->width, image->height,
+					     0, 0,
+					     image->width, image->height,
+					     0, 0,
+					     image->depth,
+					     shm_info->shm,
+					     shm_info->offset);
+    } else {
+	int len;
+
+	/* Do we need to trim the image? */
+	len = CAIRO_STRIDE_FOR_WIDTH_BPP (image->width, PIXMAN_FORMAT_BPP (image->pixman_format));
+	if (len == image->stride) {
+	    _cairo_xcb_connection_put_image (target->connection,
+					     pixmap, gc,
+					     image->width, image->height,
+					     0, 0,
+					     image->depth,
+					     image->stride,
+					     image->data);
+	} else {
+	    _cairo_xcb_connection_put_subimage (target->connection,
+						pixmap, gc,
+						0, 0,
+						image->width, image->height,
+						PIXMAN_FORMAT_BPP (image->pixman_format) / 8,
+						image->stride,
+						0, 0,
+						image->depth,
+						image->data);
+
+	}
+    }
+
+    _cairo_xcb_screen_put_gc (target->screen, image->depth, gc);
+
+    picture = _cairo_xcb_picture_create (target->screen,
+					 image->pixman_format, format,
+					 image->width, image->height);
+    if (likely (picture->base.status == CAIRO_STATUS_SUCCESS)) {
+	_cairo_xcb_connection_render_create_picture (target->connection,
+						     picture->picture, pixmap, format,
+						     0, 0);
+    }
+
+    _cairo_xcb_connection_free_pixmap (target->connection, pixmap);
+
+    return picture;
+}
+
+static cairo_bool_t
+_pattern_is_supported (uint32_t flags,
+		       const cairo_pattern_t *pattern)
+
+{
+    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID)
+	return TRUE;
+
+    switch (pattern->extend) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_EXTEND_NONE:
+    case CAIRO_EXTEND_REPEAT:
+	break;
+    case CAIRO_EXTEND_PAD:
+    case CAIRO_EXTEND_REFLECT:
+	if ((flags & CAIRO_XCB_RENDER_HAS_EXTENDED_REPEAT) == 0)
+	    return FALSE;
+    }
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	switch (pattern->filter) {
+	case CAIRO_FILTER_FAST:
+	case CAIRO_FILTER_NEAREST:
+	    return (flags & CAIRO_XCB_RENDER_HAS_PICTURE_TRANSFORM) ||
+		_cairo_matrix_is_integer_translation (&pattern->matrix, NULL, NULL);
+	case CAIRO_FILTER_GOOD:
+	    return flags & CAIRO_XCB_RENDER_HAS_FILTER_GOOD;
+	case CAIRO_FILTER_BEST:
+	    return flags & CAIRO_XCB_RENDER_HAS_FILTER_BEST;
+	case CAIRO_FILTER_BILINEAR:
+	case CAIRO_FILTER_GAUSSIAN:
+	default:
+	    return flags & CAIRO_XCB_RENDER_HAS_FILTERS;
+	}
+    } else if (pattern->type == CAIRO_PATTERN_TYPE_MESH) {
+	return FALSE;
+    } else { /* gradient */
+	if ((flags & CAIRO_XCB_RENDER_HAS_GRADIENTS) == 0)
+	    return FALSE;
+
+	/* The RENDER specification says that the inner circle has to be
+	 * completely contained inside the outer one. */
+	if (pattern->type == CAIRO_PATTERN_TYPE_RADIAL &&
+	    ! _cairo_radial_pattern_focus_is_inside ((cairo_radial_pattern_t *) pattern))
+	{
+	    return FALSE;
+	}
+	return TRUE;
+    }
+}
+
+static void
+_cairo_xcb_picture_set_matrix (cairo_xcb_picture_t *picture,
+			       const cairo_matrix_t *matrix,
+			       cairo_filter_t filter,
+			       double xc, double yc)
+{
+    xcb_render_transform_t transform;
+    pixman_transform_t *pixman_transform;
+    cairo_int_status_t ignored;
+
+    /* Casting between pixman_transform_t and xcb_render_transform_t is safe
+     * because they happen to be the exact same type.
+     */
+    pixman_transform = (pixman_transform_t *) &transform;
+
+    picture->x = picture->x0;
+    picture->y = picture->y0;
+    ignored = _cairo_matrix_to_pixman_matrix_offset (matrix, filter, xc, yc,
+						     pixman_transform,
+						     &picture->x, &picture->y);
+    (void) ignored;
+
+    if (memcmp (&picture->transform, &transform, sizeof (xcb_render_transform_t))) {
+	_cairo_xcb_connection_render_set_picture_transform (_picture_to_connection (picture),
+							    picture->picture,
+							    &transform);
+
+	picture->transform = transform;
+    }
+}
+
+static void
+_cairo_xcb_picture_set_filter (cairo_xcb_picture_t *picture,
+			       cairo_filter_t filter)
+{
+    const char *render_filter;
+    int len;
+
+    if (picture->filter == filter)
+	return;
+
+    switch (filter) {
+    case CAIRO_FILTER_FAST:
+	render_filter = "fast";
+	len = strlen ("fast");
+	break;
+
+    case CAIRO_FILTER_GOOD:
+	render_filter = "good";
+	len = strlen ("good");
+	break;
+
+    case CAIRO_FILTER_BEST:
+	render_filter = "best";
+	len = strlen ("best");
+	break;
+
+    case CAIRO_FILTER_NEAREST:
+	render_filter = "nearest";
+	len = strlen ("nearest");
+	break;
+
+    case CAIRO_FILTER_BILINEAR:
+	render_filter = "bilinear";
+	len = strlen ("bilinear");
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FILTER_GAUSSIAN:
+	render_filter = "best";
+	len = strlen ("best");
+	break;
+    }
+
+    _cairo_xcb_connection_render_set_picture_filter (_picture_to_connection (picture),
+						     picture->picture,
+						     len, (char *) render_filter);
+    picture->filter = filter;
+}
+
+static void
+_cairo_xcb_picture_set_extend (cairo_xcb_picture_t *picture,
+			       cairo_extend_t extend)
+{
+    uint32_t pa[1];
+
+    if (picture->extend == extend)
+	return;
+
+    switch (extend) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_EXTEND_NONE:
+	pa[0] = XCB_RENDER_REPEAT_NONE;
+	break;
+
+    case CAIRO_EXTEND_REPEAT:
+	pa[0] = XCB_RENDER_REPEAT_NORMAL;
+	break;
+
+    case CAIRO_EXTEND_REFLECT:
+	pa[0] = XCB_RENDER_REPEAT_REFLECT;
+	break;
+
+    case CAIRO_EXTEND_PAD:
+	pa[0] = XCB_RENDER_REPEAT_PAD;
+	break;
+    }
+
+    _cairo_xcb_connection_render_change_picture (_picture_to_connection (picture),
+						 picture->picture,
+						 XCB_RENDER_CP_REPEAT, pa);
+    picture->extend = extend;
+}
+
+static void
+_cairo_xcb_picture_set_component_alpha (cairo_xcb_picture_t *picture,
+					cairo_bool_t ca)
+{
+    uint32_t pa[1];
+
+    if (picture->has_component_alpha == ca)
+	return;
+
+    pa[0] = ca;
+
+    _cairo_xcb_connection_render_change_picture (_picture_to_connection (picture),
+						 picture->picture,
+						 XCB_RENDER_CP_COMPONENT_ALPHA,
+						 pa);
+    picture->has_component_alpha = ca;
+}
+
+static cairo_xcb_picture_t *
+_solid_picture (cairo_xcb_surface_t *target,
+		const cairo_color_t *color)
+{
+    xcb_render_color_t xcb_color;
+    xcb_render_pictformat_t xrender_format;
+    cairo_xcb_picture_t *picture;
+
+    xcb_color.red   = color->red_short;
+    xcb_color.green = color->green_short;
+    xcb_color.blue  = color->blue_short;
+    xcb_color.alpha = color->alpha_short;
+
+    xrender_format = target->screen->connection->standard_formats[CAIRO_FORMAT_ARGB32];
+    picture = _cairo_xcb_picture_create (target->screen,
+					 PIXMAN_a8r8g8b8,
+					 xrender_format,
+					 -1, -1);
+    if (unlikely (picture->base.status))
+	return picture;
+
+    if (target->connection->flags & CAIRO_XCB_RENDER_HAS_GRADIENTS) {
+	_cairo_xcb_connection_render_create_solid_fill (target->connection,
+							picture->picture,
+							xcb_color);
+    } else {
+	xcb_pixmap_t pixmap;
+	uint32_t values[] = { XCB_RENDER_REPEAT_NORMAL };
+
+	pixmap = _cairo_xcb_connection_create_pixmap (target->connection,
+						      32, target->drawable, 1, 1);
+	_cairo_xcb_connection_render_create_picture (target->connection,
+						     picture->picture,
+						     pixmap,
+						     xrender_format,
+						     XCB_RENDER_CP_REPEAT,
+						     values);
+	if (target->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES) {
+	    xcb_rectangle_t rect;
+
+	    rect.x = rect.y = 0;
+	    rect.width = rect.height = 1;
+
+	    _cairo_xcb_connection_render_fill_rectangles (_picture_to_connection (picture),
+							  XCB_RENDER_PICT_OP_SRC,
+							  picture->picture,
+							  xcb_color, 1, &rect);
+	} else {
+	    xcb_gcontext_t gc;
+	    uint32_t pixel;
+
+	    gc = _cairo_xcb_screen_get_gc (target->screen, pixmap, 32);
+
+	    /* XXX byte ordering? */
+	    pixel = ((color->alpha_short >> 8) << 24) |
+		    ((color->red_short   >> 8) << 16) |
+		    ((color->green_short >> 8) << 8) |
+		    ((color->blue_short  >> 8) << 0);
+
+	    _cairo_xcb_connection_put_image (target->connection,
+					     pixmap, gc,
+					     1, 1, 0, 0,
+					     32, 4, &pixel);
+
+	    _cairo_xcb_screen_put_gc (target->screen, 32, gc);
+	}
+
+	_cairo_xcb_connection_free_pixmap (target->connection, pixmap);
+    }
+
+    return picture;
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_transparent_picture (cairo_xcb_surface_t *target)
+{
+    cairo_xcb_picture_t *picture;
+
+    picture = (cairo_xcb_picture_t *) target->screen->stock_colors[CAIRO_STOCK_TRANSPARENT];
+    if (picture == NULL) {
+	picture = _solid_picture (target, CAIRO_COLOR_TRANSPARENT);
+	target->screen->stock_colors[CAIRO_STOCK_TRANSPARENT] = &picture->base;
+    }
+
+    return (cairo_xcb_picture_t *) cairo_surface_reference (&picture->base);
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_black_picture (cairo_xcb_surface_t *target)
+{
+    cairo_xcb_picture_t *picture;
+
+    picture = (cairo_xcb_picture_t *) target->screen->stock_colors[CAIRO_STOCK_BLACK];
+    if (picture == NULL) {
+	picture = _solid_picture (target, CAIRO_COLOR_BLACK);
+	target->screen->stock_colors[CAIRO_STOCK_BLACK] = &picture->base;
+    }
+
+    return (cairo_xcb_picture_t *) cairo_surface_reference (&picture->base);
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_white_picture (cairo_xcb_surface_t *target)
+{
+    cairo_xcb_picture_t *picture;
+
+    picture = (cairo_xcb_picture_t *) target->screen->stock_colors[CAIRO_STOCK_WHITE];
+    if (picture == NULL) {
+	picture = _solid_picture (target, CAIRO_COLOR_WHITE);
+	target->screen->stock_colors[CAIRO_STOCK_WHITE] = &picture->base;
+    }
+
+    return (cairo_xcb_picture_t *) cairo_surface_reference (&picture->base);
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_solid_picture (cairo_xcb_surface_t *target,
+			  const cairo_solid_pattern_t *pattern)
+{
+    cairo_xcb_picture_t *picture;
+    cairo_xcb_screen_t *screen;
+    int i, n_cached;
+
+    if (pattern->color.alpha_short <= 0x00ff)
+	return _cairo_xcb_transparent_picture (target);
+
+    if (pattern->color.alpha_short >= 0xff00) {
+	if (pattern->color.red_short <= 0x00ff &&
+	    pattern->color.green_short <= 0x00ff &&
+	    pattern->color.blue_short <= 0x00ff)
+	{
+	    return _cairo_xcb_black_picture (target);
+	}
+
+	if (pattern->color.red_short >= 0xff00 &&
+	    pattern->color.green_short >= 0xff00 &&
+	    pattern->color.blue_short >= 0xff00)
+	{
+	    return _cairo_xcb_white_picture (target);
+	}
+    }
+
+    screen = target->screen;
+    n_cached = screen->solid_cache_size;
+    for (i = 0; i < n_cached; i++) {
+	if (_cairo_color_equal (&screen->solid_cache[i].color, &pattern->color)) {
+	    return (cairo_xcb_picture_t *) cairo_surface_reference (screen->solid_cache[i].picture);
+	}
+    }
+
+    picture = _solid_picture (target, &pattern->color);
+    if (unlikely (picture->base.status))
+	return picture;
+
+    if (screen->solid_cache_size < ARRAY_LENGTH (screen->solid_cache)) {
+	i = screen->solid_cache_size++;
+    } else {
+	i = hars_petruska_f54_1_random () % ARRAY_LENGTH (screen->solid_cache);
+	cairo_surface_destroy (screen->solid_cache[i].picture);
+    }
+    screen->solid_cache[i].picture = cairo_surface_reference (&picture->base);
+    screen->solid_cache[i].color = pattern->color;
+
+    return picture;
+}
+
+static cairo_xcb_picture_t *
+_render_to_picture (cairo_xcb_surface_t *target,
+		    const cairo_pattern_t *pattern,
+		    const cairo_rectangle_int_t *extents)
+{
+    cairo_image_surface_t *image;
+    cairo_xcb_shm_info_t *shm_info;
+    cairo_pattern_union_t copy;
+    cairo_status_t status;
+    cairo_xcb_picture_t *picture;
+    pixman_format_code_t pixman_format;
+    xcb_render_pictformat_t xrender_format;
+
+    /* XXX handle extend modes via tiling? */
+    /* XXX alpha-only masks? */
+
+    pixman_format = PIXMAN_a8r8g8b8;
+    xrender_format = target->screen->connection->standard_formats[CAIRO_FORMAT_ARGB32];
+
+    status = _cairo_xcb_shm_image_create (target->screen->connection,
+					  pixman_format,
+					  extents->width, extents->height,
+					  &image, &shm_info);
+    if (unlikely (status))
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+
+    _cairo_pattern_init_static_copy (&copy.base, pattern);
+    cairo_matrix_translate (&copy.base.matrix, extents->x, extents->y);
+    status = _cairo_surface_paint (&image->base,
+				   CAIRO_OPERATOR_SOURCE,
+				   &copy.base,
+				   NULL);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&image->base);
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+    }
+
+    picture = _picture_from_image (target, xrender_format, image, shm_info);
+    cairo_surface_destroy (&image->base);
+
+    if (unlikely (picture->base.status))
+	return picture;
+
+    _cairo_xcb_picture_set_component_alpha (picture, pattern->has_component_alpha);
+    picture->x = -extents->x;
+    picture->y = -extents->y;
+
+    return picture;
+}
+
+static xcb_render_fixed_t *
+_gradient_to_xcb (const cairo_gradient_pattern_t *gradient,
+		  unsigned int *n_stops,
+		  char *buf, unsigned int buflen)
+{
+    xcb_render_fixed_t *stops;
+    xcb_render_color_t *colors;
+    unsigned int i;
+
+    assert (gradient->n_stops > 0);
+    *n_stops = MAX (gradient->n_stops, 2);
+
+    if (*n_stops * (sizeof (xcb_render_fixed_t) + sizeof (xcb_render_color_t)) < buflen)
+    {
+	stops = (xcb_render_fixed_t *) buf;
+    }
+    else
+    {
+	stops =
+	    _cairo_malloc_ab (*n_stops,
+			      sizeof (xcb_render_fixed_t) + sizeof (xcb_render_color_t));
+	if (unlikely (stops == NULL))
+	    return NULL;
+    }
+
+    colors = (xcb_render_color_t *) (stops + *n_stops);
+    for (i = 0; i < gradient->n_stops; i++) {
+	stops[i] =
+	    _cairo_fixed_16_16_from_double (gradient->stops[i].offset);
+
+	colors[i].red   = gradient->stops[i].color.red_short;
+	colors[i].green = gradient->stops[i].color.green_short;
+	colors[i].blue  = gradient->stops[i].color.blue_short;
+	colors[i].alpha = gradient->stops[i].color.alpha_short;
+    }
+
+    /* RENDER does not support gradients with less than 2 stops. If a
+     * gradient has only a single stop, duplicate it to make RENDER
+     * happy. */
+    if (gradient->n_stops == 1) {
+	stops[1] = _cairo_fixed_16_16_from_double (gradient->stops[0].offset);
+
+	colors[1].red   = gradient->stops[0].color.red_short;
+	colors[1].green = gradient->stops[0].color.green_short;
+	colors[1].blue  = gradient->stops[0].color.blue_short;
+	colors[1].alpha = gradient->stops[0].color.alpha_short;
+    }
+
+    return stops;
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_linear_picture (cairo_xcb_surface_t *target,
+			   const cairo_linear_pattern_t *pattern,
+			   const cairo_rectangle_int_t *extents)
+{
+    char buf[CAIRO_STACK_BUFFER_SIZE];
+    xcb_render_fixed_t *stops;
+    xcb_render_color_t *colors;
+    xcb_render_pointfix_t p1, p2;
+    cairo_matrix_t matrix;
+    cairo_circle_double_t extremes[2];
+    cairo_xcb_picture_t *picture;
+    cairo_status_t status;
+    unsigned int n_stops;
+
+    _cairo_gradient_pattern_fit_to_range (&pattern->base, PIXMAN_MAX_INT >> 1, &matrix, extremes);
+
+    picture = (cairo_xcb_picture_t *)
+	_cairo_xcb_screen_lookup_linear_picture (target->screen, pattern);
+    if (picture != NULL)
+	goto setup_picture;
+
+    stops = _gradient_to_xcb (&pattern->base, &n_stops, buf, sizeof (buf));
+    if (unlikely (stops == NULL))
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    picture = _cairo_xcb_picture_create (target->screen,
+					 target->screen->connection->standard_formats[CAIRO_FORMAT_ARGB32],
+					 PIXMAN_a8r8g8b8,
+					 -1, -1);
+    if (unlikely (picture->base.status)) {
+	if (stops != (xcb_render_fixed_t *) buf)
+	    free (stops);
+	return picture;
+    }
+    picture->filter = CAIRO_FILTER_DEFAULT;
+
+    colors = (xcb_render_color_t *) (stops + n_stops);
+
+    p1.x = _cairo_fixed_16_16_from_double (extremes[0].center.x);
+    p1.y = _cairo_fixed_16_16_from_double (extremes[0].center.y);
+    p2.x = _cairo_fixed_16_16_from_double (extremes[1].center.x);
+    p2.y = _cairo_fixed_16_16_from_double (extremes[1].center.y);
+
+    _cairo_xcb_connection_render_create_linear_gradient (target->connection,
+							 picture->picture,
+							 p1, p2,
+							 n_stops,
+							 stops, colors);
+
+    if (stops != (xcb_render_fixed_t *) buf)
+	free (stops);
+
+    status = _cairo_xcb_screen_store_linear_picture (target->screen,
+						     pattern,
+						     &picture->base);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&picture->base);
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+    }
+
+setup_picture:
+    _cairo_xcb_picture_set_matrix (picture, &matrix,
+				   pattern->base.base.filter,
+				   extents->x + extents->width/2.,
+				   extents->y + extents->height/2.);
+    _cairo_xcb_picture_set_filter (picture, pattern->base.base.filter);
+    _cairo_xcb_picture_set_extend (picture, pattern->base.base.extend);
+    _cairo_xcb_picture_set_component_alpha (picture,
+					    pattern->base.base.has_component_alpha);
+
+    return picture;
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_radial_picture (cairo_xcb_surface_t *target,
+			   const cairo_radial_pattern_t *pattern,
+			   const cairo_rectangle_int_t *extents)
+{
+    char buf[CAIRO_STACK_BUFFER_SIZE];
+    xcb_render_fixed_t *stops;
+    xcb_render_color_t *colors;
+    xcb_render_pointfix_t p1, p2;
+    xcb_render_fixed_t r1, r2;
+    cairo_matrix_t matrix;
+    cairo_circle_double_t extremes[2];
+    cairo_xcb_picture_t *picture;
+    cairo_status_t status;
+    unsigned int n_stops;
+
+    _cairo_gradient_pattern_fit_to_range (&pattern->base, PIXMAN_MAX_INT >> 1, &matrix, extremes);
+
+    picture = (cairo_xcb_picture_t *)
+	_cairo_xcb_screen_lookup_radial_picture (target->screen, pattern);
+    if (picture != NULL)
+	goto setup_picture;
+
+    stops = _gradient_to_xcb (&pattern->base, &n_stops, buf, sizeof (buf));
+    if (unlikely (stops == NULL))
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    picture = _cairo_xcb_picture_create (target->screen,
+					 target->screen->connection->standard_formats[CAIRO_FORMAT_ARGB32],
+					 PIXMAN_a8r8g8b8,
+					 -1, -1);
+    if (unlikely (picture->base.status)) {
+	if (stops != (xcb_render_fixed_t *) buf)
+	    free (stops);
+	return picture;
+    }
+    picture->filter = CAIRO_FILTER_DEFAULT;
+
+    colors = (xcb_render_color_t *) (stops + n_stops);
+
+    p1.x = _cairo_fixed_16_16_from_double (extremes[0].center.x);
+    p1.y = _cairo_fixed_16_16_from_double (extremes[0].center.y);
+    p2.x = _cairo_fixed_16_16_from_double (extremes[1].center.x);
+    p2.y = _cairo_fixed_16_16_from_double (extremes[1].center.y);
+
+    r1 = _cairo_fixed_16_16_from_double (extremes[0].radius);
+    r2 = _cairo_fixed_16_16_from_double (extremes[1].radius);
+
+    _cairo_xcb_connection_render_create_radial_gradient (target->connection,
+							 picture->picture,
+							 p1, p2, r1, r2,
+							 n_stops,
+							 stops, colors);
+
+    if (stops != (xcb_render_fixed_t *) buf)
+	free (stops);
+
+    status = _cairo_xcb_screen_store_radial_picture (target->screen,
+						     pattern,
+						     &picture->base);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&picture->base);
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+    }
+
+setup_picture:
+    _cairo_xcb_picture_set_matrix (picture, &matrix,
+				   pattern->base.base.filter,
+				   extents->x + extents->width/2.,
+				   extents->y + extents->height/2.);
+    _cairo_xcb_picture_set_filter (picture, pattern->base.base.filter);
+    _cairo_xcb_picture_set_extend (picture, pattern->base.base.extend);
+    _cairo_xcb_picture_set_component_alpha (picture,
+					    pattern->base.base.has_component_alpha);
+
+    return picture;
+}
+
+static cairo_xcb_picture_t *
+_copy_to_picture (cairo_xcb_surface_t *source)
+{
+    cairo_xcb_picture_t *picture;
+    uint32_t values[] = { 0, 1 };
+
+    if (source->deferred_clear) {
+	cairo_status_t status = _cairo_xcb_surface_clear (source);
+	if (unlikely (status))
+	    return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+    }
+
+    picture = _cairo_xcb_picture_create (source->screen,
+					 source->xrender_format,
+					 source->pixman_format,
+					 source->width,
+					 source->height);
+    if (unlikely (picture->base.status))
+	return picture;
+
+    _cairo_xcb_connection_render_create_picture (source->connection,
+						 picture->picture,
+						 source->drawable,
+						 source->xrender_format,
+						 XCB_RENDER_CP_GRAPHICS_EXPOSURE |
+						 XCB_RENDER_CP_SUBWINDOW_MODE,
+						 values);
+
+    return picture;
+}
+
+static void
+_cairo_xcb_surface_setup_surface_picture(cairo_xcb_picture_t *picture,
+					 const cairo_surface_pattern_t *pattern,
+					 const cairo_rectangle_int_t *extents)
+{
+    cairo_filter_t filter;
+
+    filter = pattern->base.filter;
+    if (filter != CAIRO_FILTER_NEAREST &&
+        _cairo_matrix_is_pixel_exact (&pattern->base.matrix))
+    {
+	filter = CAIRO_FILTER_NEAREST;
+    }
+    _cairo_xcb_picture_set_filter (picture, filter);
+
+    _cairo_xcb_picture_set_matrix (picture,
+				   &pattern->base.matrix, filter,
+				   extents->x + extents->width/2.,
+				   extents->y + extents->height/2.);
+
+
+    _cairo_xcb_picture_set_extend (picture, pattern->base.extend);
+    _cairo_xcb_picture_set_component_alpha (picture, pattern->base.has_component_alpha);
+}
+
+static cairo_xcb_picture_t *
+record_to_picture (cairo_surface_t *target,
+		   const cairo_surface_pattern_t *pattern,
+		   const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_pattern_t tmp_pattern;
+    cairo_xcb_picture_t *picture;
+    cairo_status_t status;
+    cairo_matrix_t matrix;
+    cairo_surface_t *tmp;
+    cairo_surface_t *source;
+    cairo_rectangle_int_t limit;
+    cairo_extend_t extend;
+
+    /* XXX: The following was once more or less copied from cairo-xlibs-ource.c,
+     * record_source() and recording_pattern_get_surface(), can we share a
+     * single version?
+     */
+
+    /* First get the 'real' recording surface and figure out the size for tmp */
+    source = _cairo_pattern_get_source (pattern, &limit);
+    assert (_cairo_surface_is_recording (source));
+
+    if (! _cairo_matrix_is_identity (&pattern->base.matrix)) {
+	double x1, y1, x2, y2;
+
+	matrix = pattern->base.matrix;
+	status = cairo_matrix_invert (&matrix);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	x1 = limit.x;
+	y1 = limit.y;
+	x2 = limit.x + limit.width;
+	y2 = limit.y + limit.height;
+
+	_cairo_matrix_transform_bounding_box (&matrix,
+					      &x1, &y1, &x2, &y2, NULL);
+
+	limit.x = floor (x1);
+	limit.y = floor (y1);
+	limit.width  = ceil (x2) - limit.x;
+	limit.height = ceil (y2) - limit.y;
+    }
+    extend = pattern->base.extend;
+    if (_cairo_rectangle_contains_rectangle (&limit, extents))
+	extend = CAIRO_EXTEND_NONE;
+    if (extend == CAIRO_EXTEND_NONE && ! _cairo_rectangle_intersect (&limit, extents))
+	return _cairo_xcb_transparent_picture ((cairo_xcb_surface_t *) target);
+
+    /* Now draw the recording surface to an xcb surface */
+    tmp = _cairo_surface_create_scratch (target,
+                                         source->content,
+                                         limit.width,
+                                         limit.height,
+                                         CAIRO_COLOR_TRANSPARENT);
+    if (tmp->status != CAIRO_STATUS_SUCCESS) {
+	return (cairo_xcb_picture_t *) tmp;
+    }
+
+    cairo_matrix_init_translate (&matrix, limit.x, limit.y);
+    cairo_matrix_multiply (&matrix, &matrix, &pattern->base.matrix);
+
+    status = _cairo_recording_surface_replay_with_clip (source,
+							&matrix, tmp,
+							NULL);
+    if (unlikely (status)) {
+	cairo_surface_destroy (tmp);
+	return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+    }
+
+    /* Now that we have drawn this to an xcb surface, try again with that */
+    _cairo_pattern_init_static_copy (&tmp_pattern.base, &pattern->base);
+    tmp_pattern.surface = tmp;
+    cairo_matrix_init_translate (&tmp_pattern.base.matrix, -limit.x, -limit.y);
+
+    picture = _copy_to_picture ((cairo_xcb_surface_t *) tmp);
+    if (picture->base.status == CAIRO_STATUS_SUCCESS)
+	_cairo_xcb_surface_setup_surface_picture (picture, &tmp_pattern, extents);
+    cairo_surface_destroy (tmp);
+    return picture;
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_surface_picture (cairo_xcb_surface_t *target,
+			    const cairo_surface_pattern_t *pattern,
+			    const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_t *source = pattern->surface;
+    cairo_xcb_picture_t *picture;
+
+    picture = (cairo_xcb_picture_t *)
+	_cairo_surface_has_snapshot (source, &_cairo_xcb_picture_backend);
+    if (picture != NULL) {
+	if (picture->screen == target->screen) {
+	    picture = (cairo_xcb_picture_t *) cairo_surface_reference (&picture->base);
+	    _cairo_xcb_surface_setup_surface_picture (picture, pattern, extents);
+	    return picture;
+	}
+	picture = NULL;
+    }
+
+    if (source->type == CAIRO_SURFACE_TYPE_XCB)
+    {
+	if (_cairo_surface_is_xcb(source)) {
+	    cairo_xcb_surface_t *xcb = (cairo_xcb_surface_t *) source;
+	    if (xcb->screen == target->screen && xcb->fallback == NULL) {
+		picture = _copy_to_picture ((cairo_xcb_surface_t *) source);
+		if (unlikely (picture->base.status))
+		    return picture;
+	    }
+	} else if (source->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) source;
+	    cairo_xcb_surface_t *xcb = (cairo_xcb_surface_t *) sub->target;
+
+	    /* XXX repeat interval with source clipping? */
+	    if (FALSE && xcb->screen == target->screen && xcb->fallback == NULL) {
+		xcb_rectangle_t rect;
+
+		picture = _copy_to_picture (xcb);
+		if (unlikely (picture->base.status))
+		    return picture;
+
+		rect.x = sub->extents.x;
+		rect.y = sub->extents.y;
+		rect.width  = sub->extents.width;
+		rect.height = sub->extents.height;
+
+		_cairo_xcb_connection_render_set_picture_clip_rectangles (xcb->connection,
+									  picture->picture,
+									  0, 0,
+									  1, &rect);
+		picture->x0 = rect.x;
+		picture->y0 = rect.y;
+		picture->width  = rect.width;
+		picture->height = rect.height;
+	    }
+	} else if (_cairo_surface_is_snapshot (source)) {
+	    cairo_surface_snapshot_t *snap = (cairo_surface_snapshot_t *) source;
+	    cairo_xcb_surface_t *xcb = (cairo_xcb_surface_t *) snap->target;
+
+	    if (xcb->screen == target->screen && xcb->fallback == NULL) {
+		picture = _copy_to_picture (xcb);
+		if (unlikely (picture->base.status))
+		    return picture;
+	    }
+	}
+    }
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+    else if (source->type == CAIRO_SURFACE_TYPE_XLIB)
+    {
+	if (source->backend->type == CAIRO_SURFACE_TYPE_XLIB) {
+	    cairo_xcb_surface_t *xcb = ((cairo_xlib_xcb_surface_t *) source)->xcb;
+	    if (xcb->screen == target->screen && xcb->fallback == NULL) {
+		picture = _copy_to_picture (xcb);
+		if (unlikely (picture->base.status))
+		    return picture;
+	    }
+	} else if (source->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) source;
+	    cairo_xcb_surface_t *xcb = ((cairo_xlib_xcb_surface_t *) sub->target)->xcb;
+
+	    if (FALSE && xcb->screen == target->screen && xcb->fallback == NULL) {
+		xcb_rectangle_t rect;
+
+		picture = _copy_to_picture (xcb);
+		if (unlikely (picture->base.status))
+		    return picture;
+
+		rect.x = sub->extents.x;
+		rect.y = sub->extents.y;
+		rect.width  = sub->extents.width;
+		rect.height = sub->extents.height;
+
+		_cairo_xcb_connection_render_set_picture_clip_rectangles (xcb->connection,
+									  picture->picture,
+									  0, 0,
+									  1, &rect);
+		picture->x0 = rect.x;
+		picture->y0 = rect.y;
+		picture->width  = rect.width;
+		picture->height = rect.height;
+	    }
+	} else if (_cairo_surface_is_snapshot (source)) {
+	    cairo_surface_snapshot_t *snap = (cairo_surface_snapshot_t *) source;
+	    cairo_xcb_surface_t *xcb = ((cairo_xlib_xcb_surface_t *) snap->target)->xcb;
+
+	    if (xcb->screen == target->screen && xcb->fallback == NULL) {
+		picture = _copy_to_picture (xcb);
+		if (unlikely (picture->base.status))
+		    return picture;
+	    }
+	}
+    }
+#endif
+#if CAIRO_HAS_GL_FUNCTIONS
+    else if (source->type == CAIRO_SURFACE_TYPE_GL)
+    {
+	/* pixmap from texture */
+    }
+#endif
+    else if (source->type == CAIRO_SURFACE_TYPE_RECORDING)
+    {
+	/* We have to skip the call to attach_snapshot() because we possibly
+	 * only drew part of the recording surface.
+	 * TODO: When can we safely attach a snapshot?
+	 */
+	return record_to_picture(&target->base, pattern, extents);
+    }
+
+    if (picture == NULL) {
+	cairo_image_surface_t *image;
+	void *image_extra;
+	cairo_status_t status;
+
+	status = _cairo_surface_acquire_source_image (source, &image, &image_extra);
+	if (unlikely (status))
+	    return (cairo_xcb_picture_t *) _cairo_surface_create_in_error (status);
+
+	if (image->format != CAIRO_FORMAT_INVALID) {
+	    xcb_render_pictformat_t format;
+
+	    format = target->screen->connection->standard_formats[image->format];
+
+	    picture = _picture_from_image (target, format, image, NULL);
+	    _cairo_surface_release_source_image (source, image, image_extra);
+	} else {
+	    cairo_image_surface_t *conv;
+	    xcb_render_pictformat_t render_format;
+
+	    /* XXX XRenderPutImage! */
+
+	    conv = _cairo_image_surface_coerce (image);
+	    _cairo_surface_release_source_image (source, image, image_extra);
+	    if (unlikely (conv->base.status))
+		return (cairo_xcb_picture_t *) conv;
+
+	    render_format = target->screen->connection->standard_formats[conv->format];
+	    picture = _picture_from_image (target, render_format, conv, NULL);
+	    cairo_surface_destroy (&conv->base);
+	}
+
+	if (unlikely (picture->base.status))
+	    return picture;
+    }
+
+    /* XXX: This causes too many problems and bugs, let's skip it for now. */
+#if 0
+    _cairo_surface_attach_snapshot (source,
+				    &picture->base,
+				    NULL);
+#endif
+
+    _cairo_xcb_surface_setup_surface_picture (picture, pattern, extents);
+    return picture;
+}
+
+static cairo_xcb_picture_t *
+_cairo_xcb_picture_for_pattern (cairo_xcb_surface_t *target,
+				const cairo_pattern_t *pattern,
+				const cairo_rectangle_int_t *extents)
+{
+    if (pattern == NULL)
+	return _cairo_xcb_white_picture (target);
+
+    if (! _pattern_is_supported (target->connection->flags, pattern))
+	return _render_to_picture (target, pattern, extents);
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return _cairo_xcb_solid_picture (target, (cairo_solid_pattern_t *) pattern);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return _cairo_xcb_linear_picture (target,
+					  (cairo_linear_pattern_t *) pattern,
+					  extents);
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return _cairo_xcb_radial_picture (target,
+					  (cairo_radial_pattern_t *) pattern,
+					  extents);
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return _cairo_xcb_surface_picture (target,
+					   (cairo_surface_pattern_t *) pattern,
+					   extents);
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_PATTERN_TYPE_MESH:
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return _render_to_picture (target, pattern, extents);
+    }
+}
+
+COMPILE_TIME_ASSERT (sizeof (xcb_rectangle_t) <= sizeof (cairo_box_t));
+
+static cairo_status_t
+_render_fill_boxes (void			*abstract_dst,
+		    cairo_operator_t		 op,
+		    const cairo_color_t		*color,
+		    cairo_boxes_t		*boxes)
+{
+    cairo_xcb_surface_t *dst = abstract_dst;
+    xcb_rectangle_t stack_xrects[CAIRO_STACK_ARRAY_LENGTH (xcb_rectangle_t)];
+    xcb_rectangle_t *xrects = stack_xrects;
+    xcb_render_color_t render_color;
+    int render_op = _render_operator (op);
+    struct _cairo_boxes_chunk *chunk;
+    int max_count;
+
+    render_color.red   = color->red_short;
+    render_color.green = color->green_short;
+    render_color.blue  = color->blue_short;
+    render_color.alpha = color->alpha_short;
+
+    max_count = 0;
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	if (chunk->count > max_count)
+	    max_count = chunk->count;
+    }
+    if (max_count > ARRAY_LENGTH (stack_xrects)) {
+	xrects = _cairo_malloc_ab (max_count, sizeof (xcb_rectangle_t));
+	if (unlikely (xrects == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	int i, j;
+
+	for (i = j = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_round_down (chunk->base[i].p1.x);
+	    int y1 = _cairo_fixed_integer_round_down (chunk->base[i].p1.y);
+	    int x2 = _cairo_fixed_integer_round_down (chunk->base[i].p2.x);
+	    int y2 = _cairo_fixed_integer_round_down (chunk->base[i].p2.y);
+
+	    if (x2 > x1 && y2 > y1) {
+		xrects[j].x = x1;
+		xrects[j].y = y1;
+		xrects[j].width  = x2 - x1;
+		xrects[j].height = y2 - y1;
+		j++;
+	    }
+	}
+
+	if (j) {
+	    _cairo_xcb_connection_render_fill_rectangles
+		(dst->connection,
+		 render_op, dst->picture,
+		 render_color, j, xrects);
+	}
+    }
+
+    if (xrects != stack_xrects)
+	free (xrects);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* pixel aligned, non-overlapping boxes */
+static cairo_int_status_t
+_render_composite_boxes (cairo_xcb_surface_t	*dst,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*src_pattern,
+			 const cairo_pattern_t	*mask_pattern,
+			 const cairo_rectangle_int_t *extents,
+			 const cairo_boxes_t *boxes)
+{
+    cairo_xcb_picture_t *src, *mask;
+    const struct _cairo_boxes_chunk *chunk;
+    xcb_rectangle_t stack_boxes[CAIRO_STACK_ARRAY_LENGTH (xcb_rectangle_t)];
+    xcb_rectangle_t *clip_boxes;
+    cairo_rectangle_int_t stack_extents;
+    cairo_status_t status;
+    int num_boxes;
+    int render_op;
+
+    render_op = _render_operator (op);
+
+    if (src_pattern == NULL) {
+	src_pattern = mask_pattern;
+	mask_pattern = NULL;
+    }
+
+    /* amalgamate into a single Composite call by setting a clip region */
+    clip_boxes = stack_boxes;
+    if (boxes->num_boxes > ARRAY_LENGTH (stack_boxes)) {
+	clip_boxes = _cairo_malloc_ab (boxes->num_boxes, sizeof (xcb_rectangle_t));
+	if (unlikely (clip_boxes == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    src = _cairo_xcb_picture_for_pattern (dst, src_pattern, extents);
+    status = src->base.status;
+    if (unlikely (status))
+	goto cleanup_boxes;
+
+    num_boxes = 0;
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	int i;
+
+	for (i = 0; i < chunk->count; i++) {
+	    int x = _cairo_fixed_integer_round_down (box[i].p1.x);
+	    int y = _cairo_fixed_integer_round_down (box[i].p1.y);
+	    int width  = _cairo_fixed_integer_round_down (box[i].p2.x) - x;
+	    int height = _cairo_fixed_integer_round_down (box[i].p2.y) - y;
+
+	    if (width && height) {
+		clip_boxes[num_boxes].x = x;
+		clip_boxes[num_boxes].y = y;
+		clip_boxes[num_boxes].width = width;
+		clip_boxes[num_boxes].height = height;
+		num_boxes++;
+	    }
+	}
+    }
+
+    if (num_boxes) {
+	if (num_boxes > 1) {
+	    _cairo_xcb_connection_render_set_picture_clip_rectangles (dst->connection,
+								      dst->picture,
+								      0, 0,
+								      num_boxes,
+								      clip_boxes);
+	} else {
+	    stack_extents.x = clip_boxes[0].x;
+	    stack_extents.y = clip_boxes[0].y;
+	    stack_extents.width  = clip_boxes[0].width;
+	    stack_extents.height = clip_boxes[0].height;
+	    extents = &stack_extents;
+	}
+
+	if (mask_pattern != NULL) {
+	    mask = _cairo_xcb_picture_for_pattern (dst, mask_pattern, extents);
+	    status = mask->base.status;
+	    if (unlikely (status))
+		goto cleanup_clip;
+
+	    _cairo_xcb_connection_render_composite (dst->connection,
+						    render_op,
+						    src->picture,
+						    mask->picture,
+						    dst->picture,
+						    src->x + extents->x, src->y + extents->y,
+						    mask->x + extents->x, mask->y + extents->y,
+						    extents->x, extents->y,
+						    extents->width, extents->height);
+
+	    cairo_surface_destroy (&mask->base);
+	} else {
+	    _cairo_xcb_connection_render_composite (dst->connection,
+						    render_op,
+						    src->picture,
+						    XCB_NONE,
+						    dst->picture,
+						    src->x + extents->x, src->y + extents->y,
+						    0, 0,
+						    extents->x, extents->y,
+						    extents->width, extents->height);
+	}
+
+cleanup_clip:
+
+	if (num_boxes > 1)
+	    _cairo_xcb_surface_clear_clip_region (dst);
+    }
+
+    cairo_surface_destroy (&src->base);
+
+cleanup_boxes:
+
+    if (clip_boxes != stack_boxes)
+	free (clip_boxes);
+
+    return status;
+}
+
+
+#define CAIRO_FIXED_16_16_MIN _cairo_fixed_from_int (-32768)
+#define CAIRO_FIXED_16_16_MAX _cairo_fixed_from_int (32767)
+
+static cairo_bool_t
+_line_exceeds_16_16 (const cairo_line_t *line)
+{
+    return
+	line->p1.x <= CAIRO_FIXED_16_16_MIN ||
+	line->p1.x >= CAIRO_FIXED_16_16_MAX ||
+
+	line->p2.x <= CAIRO_FIXED_16_16_MIN ||
+	line->p2.x >= CAIRO_FIXED_16_16_MAX ||
+
+	line->p1.y <= CAIRO_FIXED_16_16_MIN ||
+	line->p1.y >= CAIRO_FIXED_16_16_MAX ||
+
+	line->p2.y <= CAIRO_FIXED_16_16_MIN ||
+	line->p2.y >= CAIRO_FIXED_16_16_MAX;
+}
+
+static void
+_project_line_x_onto_16_16 (const cairo_line_t *line,
+			    cairo_fixed_t top,
+			    cairo_fixed_t bottom,
+			    xcb_render_linefix_t *out)
+{
+    cairo_point_double_t p1, p2;
+    double m;
+
+    p1.x = _cairo_fixed_to_double (line->p1.x);
+    p1.y = _cairo_fixed_to_double (line->p1.y);
+
+    p2.x = _cairo_fixed_to_double (line->p2.x);
+    p2.y = _cairo_fixed_to_double (line->p2.y);
+
+    m = (p2.x - p1.x) / (p2.y - p1.y);
+    out->p1.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (top - line->p1.y));
+    out->p2.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (bottom - line->p1.y));
+}
+
+typedef struct {
+    cairo_traps_t traps;
+    cairo_antialias_t antialias;
+} composite_traps_info_t;
+
+COMPILE_TIME_ASSERT (sizeof (xcb_render_trapezoid_t) <= sizeof (cairo_trapezoid_t));
+
+static cairo_int_status_t
+_composite_traps (void *closure,
+		  cairo_xcb_surface_t	*dst,
+		  cairo_operator_t	 op,
+		  const cairo_pattern_t	*pattern,
+		  int dst_x, int dst_y,
+		  const cairo_rectangle_int_t *extents,
+		  cairo_clip_t		*clip)
+{
+    composite_traps_info_t *info = closure;
+    const cairo_traps_t *traps = &info->traps;
+    cairo_xcb_picture_t *src;
+    cairo_format_t format;
+    xcb_render_pictformat_t xrender_format;
+    xcb_render_trapezoid_t *xtraps;
+    int render_reference_x, render_reference_y;
+    cairo_status_t status;
+    int i;
+
+    if (dst->deferred_clear) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status))
+		return status;
+    }
+
+    src = _cairo_xcb_picture_for_pattern (dst, pattern, extents);
+    if (unlikely (src->base.status))
+	return src->base.status;
+
+    if (info->antialias == CAIRO_ANTIALIAS_NONE)
+	format = CAIRO_FORMAT_A1;
+    else
+	format = CAIRO_FORMAT_A8;
+    xrender_format = dst->screen->connection->standard_formats[format];
+
+    xtraps = (xcb_render_trapezoid_t *) traps->traps;
+    for (i = 0; i < traps->num_traps; i++) {
+	cairo_trapezoid_t t = traps->traps[i];
+
+	/* top/bottom will be clamped to surface bounds */
+	xtraps[i].top = _cairo_fixed_to_16_16 (t.top);
+	xtraps[i].top -= dst_y << 16;
+	xtraps[i].bottom = _cairo_fixed_to_16_16 (t.bottom);
+	xtraps[i].bottom -= dst_y << 16;
+
+	/* However, all the other coordinates will have been left untouched so
+	 * as not to introduce numerical error. Recompute them if they
+	 * exceed the 16.16 limits.
+	 */
+	if (unlikely (_line_exceeds_16_16 (&t.left))) {
+	    _project_line_x_onto_16_16 (&t.left,
+					t.top,
+					t.bottom,
+					&xtraps[i].left);
+	    xtraps[i].left.p1.y = xtraps[i].top;
+	    xtraps[i].left.p2.y = xtraps[i].bottom;
+	} else {
+	    xtraps[i].left.p1.x = _cairo_fixed_to_16_16 (t.left.p1.x);
+	    xtraps[i].left.p1.y = _cairo_fixed_to_16_16 (t.left.p1.y);
+	    xtraps[i].left.p2.x = _cairo_fixed_to_16_16 (t.left.p2.x);
+	    xtraps[i].left.p2.y = _cairo_fixed_to_16_16 (t.left.p2.y);
+	}
+	xtraps[i].left.p1.x -= dst_x << 16;
+	xtraps[i].left.p1.y -= dst_y << 16;
+	xtraps[i].left.p2.x -= dst_x << 16;
+	xtraps[i].left.p2.y -= dst_y << 16;
+
+	if (unlikely (_line_exceeds_16_16 (&t.right))) {
+	    _project_line_x_onto_16_16 (&t.right,
+					t.top,
+					t.bottom,
+					&xtraps[i].right);
+	    xtraps[i].right.p1.y = xtraps[i].top;
+	    xtraps[i].right.p2.y = xtraps[i].bottom;
+	} else {
+	    xtraps[i].right.p1.x = _cairo_fixed_to_16_16 (t.right.p1.x);
+	    xtraps[i].right.p1.y = _cairo_fixed_to_16_16 (t.right.p1.y);
+	    xtraps[i].right.p2.x = _cairo_fixed_to_16_16 (t.right.p2.x);
+	    xtraps[i].right.p2.y = _cairo_fixed_to_16_16 (t.right.p2.y);
+	}
+	xtraps[i].right.p1.x -= dst_x << 16;
+	xtraps[i].right.p1.y -= dst_y << 16;
+	xtraps[i].right.p2.x -= dst_x << 16;
+	xtraps[i].right.p2.y -= dst_y << 16;
+    }
+
+    if (xtraps[0].left.p1.y < xtraps[0].left.p2.y) {
+	render_reference_x = xtraps[0].left.p1.x >> 16;
+	render_reference_y = xtraps[0].left.p1.y >> 16;
+    } else {
+	render_reference_x = xtraps[0].left.p2.x >> 16;
+	render_reference_y = xtraps[0].left.p2.y >> 16;
+    }
+    render_reference_x += src->x + dst_x;
+    render_reference_y += src->y + dst_y;
+
+    _cairo_xcb_surface_set_precision (dst, info->antialias);
+    _cairo_xcb_connection_render_trapezoids (dst->connection,
+					     _render_operator (op),
+					     src->picture,
+					     dst->picture,
+					     xrender_format,
+					     render_reference_x,
+					     render_reference_y,
+					     traps->num_traps, xtraps);
+
+    cairo_surface_destroy (&src->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* low-level composite driver */
+
+static cairo_xcb_surface_t *
+get_clip_surface (const cairo_clip_t *clip,
+		  cairo_xcb_surface_t *target,
+		  int *tx, int *ty)
+{
+    cairo_surface_t *surface;
+    cairo_status_t status;
+
+    surface = _cairo_surface_create_scratch (&target->base,
+					    CAIRO_CONTENT_ALPHA,
+					    clip->extents.width,
+					    clip->extents.height,
+					    CAIRO_COLOR_WHITE);
+    if (unlikely (surface->status))
+	return (cairo_xcb_surface_t *) surface;
+
+    assert (surface->backend == &_cairo_xcb_surface_backend);
+    status = _cairo_clip_combine_with_surface (clip, surface,
+					       clip->extents.x, clip->extents.y);
+    if (unlikely (status)) {
+	cairo_surface_destroy (surface);
+	surface = _cairo_surface_create_in_error (status);
+    }
+
+    *tx = clip->extents.x;
+    *ty = clip->extents.y;
+
+    return (cairo_xcb_surface_t *) surface;
+}
+
+typedef cairo_int_status_t
+(*xcb_draw_func_t) (void				*closure,
+		    cairo_xcb_surface_t			*dst,
+		    cairo_operator_t			 op,
+		    const cairo_pattern_t		*src,
+		    int					 dst_x,
+		    int					 dst_y,
+		    const cairo_rectangle_int_t		*extents,
+		    cairo_clip_t			*clip);
+
+static void do_unaligned_row(void (*blt)(void *closure,
+					 int16_t x, int16_t y,
+					 int16_t w, int16_t h,
+					 uint16_t coverage),
+			     void *closure,
+			     const cairo_box_t *b,
+			     int tx, int y, int h,
+			     uint16_t coverage)
+{
+    int x1 = _cairo_fixed_integer_part (b->p1.x) - tx;
+    int x2 = _cairo_fixed_integer_part (b->p2.x) - tx;
+    if (x2 > x1) {
+	if (! _cairo_fixed_is_integer (b->p1.x)) {
+	    blt(closure, x1, y, 1, h,
+		coverage * (256 - _cairo_fixed_fractional_part (b->p1.x)));
+	    x1++;
+	}
+
+	if (x2 > x1)
+	    blt(closure, x1, y, x2-x1, h, (coverage << 8) - (coverage >> 8));
+
+	if (! _cairo_fixed_is_integer (b->p2.x))
+	    blt(closure, x2, y, 1, h,
+		coverage * _cairo_fixed_fractional_part (b->p2.x));
+    } else
+	blt(closure, x1, y, 1, h,
+	    coverage * (b->p2.x - b->p1.x));
+}
+
+static void do_unaligned_box(void (*blt)(void *closure,
+					 int16_t x, int16_t y,
+					 int16_t w, int16_t h,
+					 uint16_t coverage),
+			     void *closure,
+			     const cairo_box_t *b, int tx, int ty)
+{
+    int y1 = _cairo_fixed_integer_part (b->p1.y) - ty;
+    int y2 = _cairo_fixed_integer_part (b->p2.y) - ty;
+    if (y2 > y1) {
+	if (! _cairo_fixed_is_integer (b->p1.y)) {
+	    do_unaligned_row(blt, closure, b, tx, y1, 1,
+			     256 - _cairo_fixed_fractional_part (b->p1.y));
+	    y1++;
+	}
+
+	if (y2 > y1)
+	    do_unaligned_row(blt, closure, b, tx, y1, y2-y1, 256);
+
+	if (! _cairo_fixed_is_integer (b->p2.y))
+	    do_unaligned_row(blt, closure, b, tx, y2, 1,
+			     _cairo_fixed_fractional_part (b->p2.y));
+    } else
+	do_unaligned_row(blt, closure, b, tx, y1, 1,
+			 b->p2.y - b->p1.y);
+}
+
+
+static void blt_in(void *closure,
+		   int16_t x, int16_t y,
+		   int16_t w, int16_t h,
+		   uint16_t coverage)
+{
+    cairo_xcb_surface_t *mask = closure;
+    xcb_render_color_t color;
+    xcb_rectangle_t rect;
+
+    if (coverage == 0xffff)
+	return;
+
+    color.red = color.green = color.blue = 0;
+    color.alpha = coverage;
+
+    rect.x = x;
+    rect.y = y;
+    rect.width  = w;
+    rect.height = h;
+
+    _cairo_xcb_connection_render_fill_rectangles (mask->connection,
+						  XCB_RENDER_PICT_OP_IN,
+						  mask->picture,
+						  color, 1, &rect);
+}
+
+static cairo_xcb_surface_t *
+_create_composite_mask (cairo_clip_t		*clip,
+			xcb_draw_func_t		 draw_func,
+			xcb_draw_func_t		 mask_func,
+			void			*draw_closure,
+			cairo_xcb_surface_t	*dst,
+			const cairo_rectangle_int_t*extents)
+{
+    cairo_xcb_surface_t *surface;
+    cairo_bool_t need_clip_combine;
+    cairo_int_status_t status;
+
+    surface = (cairo_xcb_surface_t *)
+	_cairo_xcb_surface_create_similar (dst, CAIRO_CONTENT_ALPHA,
+					   extents->width, extents->height);
+    if (unlikely (surface->base.status))
+	return surface;
+
+    _cairo_xcb_surface_ensure_picture (surface);
+
+    surface->deferred_clear_color = *CAIRO_COLOR_TRANSPARENT;
+    surface->deferred_clear = TRUE;
+    surface->base.is_clear = TRUE;
+
+    if (mask_func) {
+	status = mask_func (draw_closure, surface,
+			    CAIRO_OPERATOR_ADD, NULL,
+			    extents->x, extents->y,
+			    extents, clip);
+	if (likely (status != CAIRO_INT_STATUS_UNSUPPORTED))
+	    return surface;
+    }
+
+    /* Is it worth setting the clip region here? */
+    status = draw_func (draw_closure, surface,
+			CAIRO_OPERATOR_ADD, NULL,
+			extents->x, extents->y,
+			extents, NULL);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&surface->base);
+	return (cairo_xcb_surface_t *) _cairo_surface_create_in_error (status);
+    }
+
+    if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES) {
+	int i;
+
+	for (i = 0; i < clip->num_boxes; i++) {
+	    cairo_box_t *b = &clip->boxes[i];
+
+	    if (! _cairo_fixed_is_integer (b->p1.x) ||
+		! _cairo_fixed_is_integer (b->p1.y) ||
+		! _cairo_fixed_is_integer (b->p2.x) ||
+		! _cairo_fixed_is_integer (b->p2.y))
+	    {
+		do_unaligned_box(blt_in, surface, b, extents->x, extents->y);
+	    }
+	}
+
+	need_clip_combine = clip->path != NULL;
+    } else
+	need_clip_combine = ! _cairo_clip_is_region (clip);
+
+    if (need_clip_combine) {
+	status = _cairo_clip_combine_with_surface (clip, &surface->base,
+						   extents->x, extents->y);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&surface->base);
+	    return (cairo_xcb_surface_t *) _cairo_surface_create_in_error (status);
+	}
+    }
+
+    return surface;
+}
+
+/* Handles compositing with a clip surface when the operator allows
+ * us to combine the clip with the mask
+ */
+static cairo_status_t
+_clip_and_composite_with_mask (cairo_clip_t		*clip,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*pattern,
+			       xcb_draw_func_t		 draw_func,
+			       xcb_draw_func_t		 mask_func,
+			       void			*draw_closure,
+			       cairo_xcb_surface_t	*dst,
+			       const cairo_rectangle_int_t*extents)
+{
+    cairo_xcb_surface_t *mask;
+    cairo_xcb_picture_t *src;
+
+    mask = _create_composite_mask (clip,
+				   draw_func, mask_func, draw_closure,
+				   dst, extents);
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    if (pattern != NULL || dst->base.content != CAIRO_CONTENT_ALPHA) {
+	src = _cairo_xcb_picture_for_pattern (dst, pattern, extents);
+	if (unlikely (src->base.status)) {
+	    cairo_surface_destroy (&mask->base);
+	    return src->base.status;
+	}
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						_render_operator (op),
+						src->picture,
+						mask->picture,
+						dst->picture,
+						extents->x + src->x, extents->y + src->y,
+						0, 0,
+						extents->x,      extents->y,
+						extents->width,  extents->height);
+
+	cairo_surface_destroy (&src->base);
+    } else {
+	_cairo_xcb_connection_render_composite (dst->connection,
+						_render_operator (op),
+						mask->picture,
+						XCB_NONE,
+						dst->picture,
+						0, 0,
+						0, 0,
+						extents->x,      extents->y,
+						extents->width,  extents->height);
+    }
+    cairo_surface_destroy (&mask->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Handles compositing with a clip surface when we have to do the operation
+ * in two pieces and combine them together.
+ */
+static cairo_status_t
+_clip_and_composite_combine (cairo_clip_t		*clip,
+			     cairo_operator_t		 op,
+			     const cairo_pattern_t	*pattern,
+			     xcb_draw_func_t		 draw_func,
+			     void			*draw_closure,
+			     cairo_xcb_surface_t	*dst,
+			     const cairo_rectangle_int_t*extents)
+{
+    cairo_xcb_surface_t *tmp;
+    cairo_xcb_surface_t *clip_surface;
+    int clip_x = 0, clip_y = 0;
+    xcb_render_picture_t clip_picture;
+    cairo_status_t status;
+
+    tmp = (cairo_xcb_surface_t *)
+	_cairo_xcb_surface_create_similar (dst, dst->base.content,
+					   extents->width, extents->height);
+    if (unlikely (tmp->base.status))
+	return tmp->base.status;
+
+    /* create_similar() could have done a fallback to an image surface */
+    assert (tmp->base.backend == &_cairo_xcb_surface_backend);
+
+    _cairo_xcb_surface_ensure_picture (tmp);
+
+    if (pattern == NULL) {
+	status = (*draw_func) (draw_closure, tmp,
+			       CAIRO_OPERATOR_ADD, NULL,
+			       extents->x, extents->y,
+			       extents, NULL);
+    } else {
+	/* Initialize the temporary surface from the destination surface */
+	if (! dst->base.is_clear ||
+	    (dst->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES) == 0)
+	{
+	    /* XCopyArea may actually be quicker here.
+	     * A good driver should translate if appropriate.
+	     */
+	    _cairo_xcb_connection_render_composite (dst->connection,
+						    XCB_RENDER_PICT_OP_SRC,
+						    dst->picture,
+						    XCB_NONE,
+						    tmp->picture,
+						    extents->x,      extents->y,
+						    0, 0,
+						    0, 0,
+						    extents->width,  extents->height);
+	}
+	else
+	{
+	    xcb_render_color_t clear;
+	    xcb_rectangle_t xrect;
+
+	    clear.red = clear.green = clear.blue = clear.alpha = 0;
+
+	    xrect.x = xrect.y = 0;
+	    xrect.width  = extents->width;
+	    xrect.height = extents->height;
+
+	    _cairo_xcb_connection_render_fill_rectangles (dst->connection,
+							  XCB_RENDER_PICT_OP_CLEAR,
+							  dst->picture,
+							  clear, 1, &xrect);
+	}
+
+	status = (*draw_func) (draw_closure, tmp, op, pattern,
+			       extents->x, extents->y,
+			       extents, NULL);
+    }
+    if (unlikely (status))
+	goto CLEANUP_SURFACE;
+
+    clip_surface = get_clip_surface (clip, dst, &clip_x, &clip_y);
+    status = clip_surface->base.status;
+    if (unlikely (status))
+	goto CLEANUP_SURFACE;
+
+    assert (clip_surface->base.backend == &_cairo_xcb_surface_backend);
+    clip_picture = clip_surface->picture;
+    assert (clip_picture != XCB_NONE);
+
+    if (dst->base.is_clear) {
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_SRC,
+						tmp->picture, clip_picture, dst->picture,
+						0, 0,
+						0, 0,
+						extents->x,      extents->y,
+						extents->width,  extents->height);
+    } else {
+	/* Punch the clip out of the destination */
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_OUT_REVERSE,
+						clip_picture, XCB_NONE, dst->picture,
+						extents->x - clip_x,
+						extents->y - clip_y,
+						0, 0,
+						extents->x,     extents->y,
+						extents->width, extents->height);
+
+	/* Now add the two results together */
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_ADD,
+						tmp->picture, clip_picture, dst->picture,
+						0, 0,
+						extents->x - clip_x,
+						extents->y - clip_y,
+						extents->x,     extents->y,
+						extents->width, extents->height);
+    }
+    cairo_surface_destroy (&clip_surface->base);
+
+ CLEANUP_SURFACE:
+    cairo_surface_destroy (&tmp->base);
+
+    return status;
+}
+
+/* Handles compositing for %CAIRO_OPERATOR_SOURCE, which is special; it's
+ * defined as (src IN mask IN clip) ADD (dst OUT (mask IN clip))
+ */
+static cairo_status_t
+_clip_and_composite_source (cairo_clip_t		*clip,
+			    const cairo_pattern_t	*pattern,
+			    xcb_draw_func_t		 draw_func,
+			    xcb_draw_func_t		 mask_func,
+			    void			*draw_closure,
+			    cairo_xcb_surface_t		*dst,
+			    const cairo_rectangle_int_t	*extents)
+{
+    cairo_xcb_surface_t *mask;
+    cairo_xcb_picture_t *src;
+
+    /* Create a surface that is mask IN clip */
+    mask = _create_composite_mask (clip,
+				   draw_func, mask_func, draw_closure,
+				   dst, extents);
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    src = _cairo_xcb_picture_for_pattern (dst, pattern, extents);
+    if (unlikely (src->base.status)) {
+	cairo_surface_destroy (&mask->base);
+	return src->base.status;
+    }
+
+    if (dst->base.is_clear) {
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_SRC,
+						src->picture,
+						mask->picture,
+						dst->picture,
+						extents->x + src->x, extents->y + src->y,
+						0, 0,
+						extents->x,      extents->y,
+						extents->width,  extents->height);
+    } else {
+	/* Compute dest' = dest OUT (mask IN clip) */
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_OUT_REVERSE,
+						mask->picture,
+						XCB_NONE,
+						dst->picture,
+						0, 0, 0, 0,
+						extents->x,     extents->y,
+						extents->width, extents->height);
+
+	/* Now compute (src IN (mask IN clip)) ADD dest' */
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_ADD,
+						src->picture,
+						mask->picture,
+						dst->picture,
+						extents->x + src->x, extents->y + src->y,
+						0, 0,
+						extents->x,     extents->y,
+						extents->width, extents->height);
+    }
+
+    cairo_surface_destroy (&src->base);
+    cairo_surface_destroy (&mask->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+can_reduce_alpha_op (cairo_operator_t op)
+{
+    int iop = op;
+    switch (iop) {
+    case CAIRO_OPERATOR_OVER:
+    case CAIRO_OPERATOR_SOURCE:
+    case CAIRO_OPERATOR_ADD:
+	return TRUE;
+    default:
+	return FALSE;
+    }
+}
+
+static cairo_bool_t
+reduce_alpha_op (cairo_surface_t *dst,
+		 cairo_operator_t op,
+		 const cairo_pattern_t *pattern)
+{
+    return dst->is_clear &&
+	   dst->content == CAIRO_CONTENT_ALPHA &&
+	   _cairo_pattern_is_opaque_solid (pattern) &&
+	   can_reduce_alpha_op (op);
+}
+
+static cairo_status_t
+_cairo_xcb_surface_fixup_unbounded (cairo_xcb_surface_t *dst,
+				    const cairo_composite_rectangles_t *rects)
+{
+    xcb_rectangle_t xrects[4];
+    int n;
+
+    if (rects->bounded.width  == rects->unbounded.width &&
+	rects->bounded.height == rects->unbounded.height)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    n = 0;
+    if (rects->bounded.width == 0 || rects->bounded.height == 0) {
+	xrects[n].x = rects->unbounded.x;
+	xrects[n].width = rects->unbounded.width;
+	xrects[n].y = rects->unbounded.y;
+	xrects[n].height = rects->unbounded.height;
+	n++;
+    } else {
+	/* top */
+	if (rects->bounded.y != rects->unbounded.y) {
+	    xrects[n].x = rects->unbounded.x;
+	    xrects[n].width = rects->unbounded.width;
+	    xrects[n].y = rects->unbounded.y;
+	    xrects[n].height = rects->bounded.y - rects->unbounded.y;
+	    n++;
+	}
+	/* left */
+	if (rects->bounded.x != rects->unbounded.x) {
+	    xrects[n].x = rects->unbounded.x;
+	    xrects[n].width = rects->bounded.x - rects->unbounded.x;
+	    xrects[n].y = rects->bounded.y;
+	    xrects[n].height = rects->bounded.height;
+	    n++;
+	}
+	/* right */
+	if (rects->bounded.x + rects->bounded.width != rects->unbounded.x + rects->unbounded.width) {
+	    xrects[n].x = rects->bounded.x + rects->bounded.width;
+	    xrects[n].width = rects->unbounded.x + rects->unbounded.width - xrects[n].x;
+	    xrects[n].y = rects->bounded.y;
+	    xrects[n].height = rects->bounded.height;
+	    n++;
+	}
+	/* bottom */
+	if (rects->bounded.y + rects->bounded.height != rects->unbounded.y + rects->unbounded.height) {
+	    xrects[n].x = rects->unbounded.x;
+	    xrects[n].width = rects->unbounded.width;
+	    xrects[n].y = rects->bounded.y + rects->bounded.height;
+	    xrects[n].height = rects->unbounded.y + rects->unbounded.height - xrects[n].y;
+	    n++;
+	}
+    }
+
+    if (dst->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES) {
+	xcb_render_color_t color;
+
+	color.red   = 0;
+	color.green = 0;
+	color.blue  = 0;
+	color.alpha = 0;
+
+	_cairo_xcb_connection_render_fill_rectangles (dst->connection,
+						      XCB_RENDER_PICT_OP_CLEAR,
+						      dst->picture,
+						      color, n, xrects);
+    } else {
+	int i;
+	cairo_xcb_picture_t *src;
+
+	src = _cairo_xcb_transparent_picture (dst);
+	if (unlikely (src->base.status))
+	    return src->base.status;
+
+	for (i = 0; i < n; i++) {
+	    _cairo_xcb_connection_render_composite (dst->connection,
+						    XCB_RENDER_PICT_OP_CLEAR,
+						    src->picture, XCB_NONE, dst->picture,
+						    0, 0,
+						    0, 0,
+						    xrects[i].x, xrects[i].y,
+						    xrects[i].width, xrects[i].height);
+	}
+	cairo_surface_destroy (&src->base);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_fixup_unbounded_with_mask (cairo_xcb_surface_t *dst,
+					      const cairo_composite_rectangles_t *rects,
+					      cairo_clip_t *clip)
+{
+    cairo_xcb_surface_t *mask;
+    int mask_x = 0, mask_y = 0;
+
+    mask = get_clip_surface (clip, dst, &mask_x, &mask_y);
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    /* top */
+    if (rects->bounded.y != rects->unbounded.y) {
+	int x = rects->unbounded.x;
+	int y = rects->unbounded.y;
+	int width = rects->unbounded.width;
+	int height = rects->bounded.y - y;
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_OUT_REVERSE,
+						mask->picture, XCB_NONE, dst->picture,
+						x - mask_x, y - mask_y,
+						0, 0,
+						x, y,
+						width, height);
+    }
+
+    /* left */
+    if (rects->bounded.x != rects->unbounded.x) {
+	int x = rects->unbounded.x;
+	int y = rects->bounded.y;
+	int width = rects->bounded.x - x;
+	int height = rects->bounded.height;
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_OUT_REVERSE,
+						mask->picture, XCB_NONE, dst->picture,
+						x - mask_x, y - mask_y,
+						0, 0,
+						x, y,
+						width, height);
+    }
+
+    /* right */
+    if (rects->bounded.x + rects->bounded.width != rects->unbounded.x + rects->unbounded.width) {
+	int x = rects->bounded.x + rects->bounded.width;
+	int y = rects->bounded.y;
+	int width = rects->unbounded.x + rects->unbounded.width - x;
+	int height = rects->bounded.height;
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_OUT_REVERSE,
+						mask->picture, XCB_NONE, dst->picture,
+						x - mask_x, y - mask_y,
+						0, 0,
+						x, y,
+						width, height);
+    }
+
+    /* bottom */
+    if (rects->bounded.y + rects->bounded.height != rects->unbounded.y + rects->unbounded.height) {
+	int x = rects->unbounded.x;
+	int y = rects->bounded.y + rects->bounded.height;
+	int width = rects->unbounded.width;
+	int height = rects->unbounded.y + rects->unbounded.height - y;
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						XCB_RENDER_PICT_OP_OUT_REVERSE,
+						mask->picture, XCB_NONE, dst->picture,
+						x - mask_x, y - mask_y,
+						0, 0,
+						x, y,
+						width, height);
+    }
+
+    cairo_surface_destroy (&mask->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_fixup_unbounded_boxes (cairo_xcb_surface_t *dst,
+					  const cairo_composite_rectangles_t *extents,
+					  cairo_clip_t *clip,
+					  cairo_boxes_t *boxes)
+{
+    cairo_boxes_t clear;
+    cairo_box_t box;
+    cairo_status_t status;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    if (boxes->num_boxes <= 1 && clip == NULL)
+	return _cairo_xcb_surface_fixup_unbounded (dst, extents);
+
+    _cairo_boxes_init (&clear);
+
+    box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+    box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
+    box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
+    box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
+
+    if (clip == NULL) {
+	cairo_boxes_t tmp;
+
+	_cairo_boxes_init (&tmp);
+
+	status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	tmp.chunks.next = &boxes->chunks;
+	tmp.num_boxes += boxes->num_boxes;
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+
+	tmp.chunks.next = NULL;
+    } else {
+	_cairo_boxes_init_with_clip (&clear, clip);
+
+	status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		status = _cairo_boxes_add (&clear,
+					   CAIRO_ANTIALIAS_DEFAULT,
+					   &chunk->base[i]);
+		if (unlikely (status)) {
+		    _cairo_boxes_fini (&clear);
+		    return status;
+		}
+	    }
+	}
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&clear,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+    }
+
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	if (dst->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES)
+	    status = _render_fill_boxes (dst,
+					 CAIRO_OPERATOR_CLEAR,
+					 CAIRO_COLOR_TRANSPARENT,
+					 &clear);
+	else
+	    status = _cairo_xcb_surface_core_fill_boxes (dst,
+							 CAIRO_COLOR_TRANSPARENT,
+							 &clear);
+    }
+
+    _cairo_boxes_fini (&clear);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_xcb_surface_clear (cairo_xcb_surface_t *dst)
+{
+    xcb_gcontext_t gc;
+    xcb_rectangle_t rect;
+    cairo_status_t status;
+
+    status = _cairo_xcb_connection_acquire (dst->connection);
+    if (unlikely (status))
+	return status;
+
+    rect.x = rect.y = 0;
+    rect.width  = dst->width;
+    rect.height = dst->height;
+
+    if (dst->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES) {
+	xcb_render_color_t color;
+	uint8_t op;
+
+	color.red   = dst->deferred_clear_color.red_short;
+	color.green = dst->deferred_clear_color.green_short;
+	color.blue  = dst->deferred_clear_color.blue_short;
+	color.alpha = dst->deferred_clear_color.alpha_short;
+
+	if (color.alpha == 0)
+	    op = XCB_RENDER_PICT_OP_CLEAR;
+	else
+	    op = XCB_RENDER_PICT_OP_SRC;
+
+	_cairo_xcb_surface_ensure_picture (dst);
+	_cairo_xcb_connection_render_fill_rectangles (dst->connection,
+						      op, dst->picture, color,
+						      1, &rect);
+    } else {
+	gc = _cairo_xcb_screen_get_gc (dst->screen, dst->drawable, dst->depth);
+
+	/* XXX color */
+	_cairo_xcb_connection_poly_fill_rectangle (dst->connection,
+						   dst->drawable, gc,
+						   1, &rect);
+
+	_cairo_xcb_screen_put_gc (dst->screen, dst->depth, gc);
+    }
+
+    _cairo_xcb_connection_release (dst->connection);
+
+    dst->deferred_clear = FALSE;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+enum {
+    NEED_CLIP_REGION = 0x1,
+    NEED_CLIP_SURFACE = 0x2,
+    FORCE_CLIP_REGION = 0x4,
+};
+
+static cairo_bool_t
+need_bounded_clip (cairo_composite_rectangles_t *extents)
+{
+    unsigned int flags = NEED_CLIP_REGION;
+    if (! _cairo_clip_is_region (extents->clip))
+	flags |= NEED_CLIP_SURFACE;
+    return flags;
+}
+
+static cairo_bool_t
+need_unbounded_clip (cairo_composite_rectangles_t *extents)
+{
+    unsigned int flags = 0;
+    if (! extents->is_bounded) {
+	flags |= NEED_CLIP_REGION;
+	if (! _cairo_clip_is_region (extents->clip))
+	    flags |= NEED_CLIP_SURFACE;
+    }
+    if (extents->clip->path != NULL)
+	flags |= NEED_CLIP_SURFACE;
+    return flags;
+}
+
+static cairo_status_t
+_clip_and_composite (cairo_xcb_surface_t	*dst,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*src,
+		     xcb_draw_func_t		 draw_func,
+		     xcb_draw_func_t		 mask_func,
+		     void			*draw_closure,
+		     cairo_composite_rectangles_t*extents,
+		     unsigned int need_clip)
+{
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status;
+
+    status = _cairo_xcb_connection_acquire (dst->connection);
+    if (unlikely (status))
+	return status;
+
+    if (dst->deferred_clear) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status)) {
+	    _cairo_xcb_connection_release (dst->connection);
+	    return status;
+	}
+    }
+
+    _cairo_xcb_surface_ensure_picture (dst);
+
+    if (need_clip & NEED_CLIP_REGION) {
+	clip_region = _cairo_clip_get_region (extents->clip);
+	if ((need_clip & FORCE_CLIP_REGION) == 0 && clip_region != NULL &&
+	    cairo_region_contains_rectangle (clip_region,
+					     &extents->unbounded) == CAIRO_REGION_OVERLAP_IN)
+	    clip_region = NULL;
+	if (clip_region != NULL) {
+	    status = _cairo_xcb_surface_set_clip_region (dst, clip_region);
+	    if (unlikely (status)) {
+		_cairo_xcb_connection_release (dst->connection);
+		return status;
+	    }
+	}
+    }
+
+    if (reduce_alpha_op (&dst->base, op, src)) {
+	op = CAIRO_OPERATOR_ADD;
+	src = NULL;
+    }
+
+    if (extents->bounded.width != 0 && extents->bounded.height != 0) {
+	if (op == CAIRO_OPERATOR_SOURCE) {
+	    status = _clip_and_composite_source (extents->clip, src,
+						 draw_func, mask_func, draw_closure,
+						 dst, &extents->bounded);
+	} else {
+	    if (op == CAIRO_OPERATOR_CLEAR) {
+		op = CAIRO_OPERATOR_DEST_OUT;
+		src = NULL;
+	    }
+
+	    if (need_clip & NEED_CLIP_SURFACE) {
+		if (extents->is_bounded) {
+		    status = _clip_and_composite_with_mask (extents->clip, op, src,
+							    draw_func,
+							    mask_func,
+							    draw_closure,
+							    dst, &extents->bounded);
+		} else {
+		    status = _clip_and_composite_combine (extents->clip, op, src,
+							  draw_func, draw_closure,
+							  dst, &extents->bounded);
+		}
+	    } else {
+		status = draw_func (draw_closure,
+				    dst, op, src,
+				    0, 0,
+				    &extents->bounded,
+				    extents->clip);
+	    }
+	}
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) {
+	if (need_clip & NEED_CLIP_SURFACE)
+	    status = _cairo_xcb_surface_fixup_unbounded_with_mask (dst, extents, extents->clip);
+	else
+	    status = _cairo_xcb_surface_fixup_unbounded (dst, extents);
+    }
+
+    if (clip_region)
+	_cairo_xcb_surface_clear_clip_region (dst);
+
+    _cairo_xcb_connection_release (dst->connection);
+
+    return status;
+}
+
+static cairo_status_t
+_core_boxes (cairo_xcb_surface_t *dst,
+	     cairo_operator_t op,
+	     const cairo_pattern_t *src,
+	     cairo_boxes_t *boxes,
+	     const cairo_composite_rectangles_t *extents)
+{
+    if (! boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_clip_is_region (extents->clip))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (op == CAIRO_OPERATOR_CLEAR)
+	return _cairo_xcb_surface_core_fill_boxes (dst, CAIRO_COLOR_TRANSPARENT, boxes);
+
+    if (op == CAIRO_OPERATOR_OVER) {
+	if (dst->base.is_clear || _cairo_pattern_is_opaque (src, &extents->bounded))
+	    op = CAIRO_OPERATOR_SOURCE;
+    }
+    if (op != CAIRO_OPERATOR_SOURCE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (src->type == CAIRO_PATTERN_TYPE_SOLID) {
+	return _cairo_xcb_surface_core_fill_boxes (dst,
+						   &((cairo_solid_pattern_t *) src)->color,
+						   boxes);
+    }
+
+    return _cairo_xcb_surface_core_copy_boxes (dst, src, &extents->bounded, boxes);
+}
+
+static cairo_status_t
+_composite_boxes (cairo_xcb_surface_t *dst,
+		  cairo_operator_t op,
+		  const cairo_pattern_t *src,
+		  cairo_boxes_t *boxes,
+		  const cairo_composite_rectangles_t *extents)
+{
+    cairo_clip_t *clip = extents->clip;
+    cairo_bool_t need_clip_mask = ! _cairo_clip_is_region (clip);
+    cairo_status_t status;
+
+    /* If the boxes are not pixel-aligned, we will need to compute a real mask */
+    if (! boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (need_clip_mask &&
+	(! extents->is_bounded || op == CAIRO_OPERATOR_SOURCE))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = _cairo_xcb_connection_acquire (dst->connection);
+    if (unlikely (status))
+	return status;
+
+    _cairo_xcb_surface_ensure_picture (dst);
+    if (dst->connection->flags & CAIRO_XCB_RENDER_HAS_FILL_RECTANGLES && ! need_clip_mask &&
+	(op == CAIRO_OPERATOR_CLEAR || src->type == CAIRO_PATTERN_TYPE_SOLID))
+    {
+	const cairo_color_t *color;
+
+	if (op == CAIRO_OPERATOR_CLEAR)
+	    color = CAIRO_COLOR_TRANSPARENT;
+	else
+	    color = &((cairo_solid_pattern_t *) src)->color;
+
+	status = _render_fill_boxes (dst, op, color, boxes);
+    }
+    else
+    {
+	cairo_surface_pattern_t mask;
+
+	if (need_clip_mask) {
+	    cairo_xcb_surface_t *clip_surface;
+	    int clip_x = 0, clip_y = 0;
+
+	    clip_surface = get_clip_surface (extents->clip, dst,
+					     &clip_x, &clip_y);
+	    if (unlikely (clip_surface->base.status))
+		return clip_surface->base.status;
+
+	    _cairo_pattern_init_for_surface (&mask, &clip_surface->base);
+	    mask.base.filter = CAIRO_FILTER_NEAREST;
+	    cairo_matrix_init_translate (&mask.base.matrix,
+					 -clip_x,
+					 -clip_y);
+	    cairo_surface_destroy (&clip_surface->base);
+
+	    if (op == CAIRO_OPERATOR_CLEAR) {
+		src = NULL;
+		op = CAIRO_OPERATOR_DEST_OUT;
+	    }
+	}
+
+	status = _render_composite_boxes (dst, op, src,
+					  need_clip_mask ? &mask.base : NULL,
+					  &extents->bounded, boxes);
+
+	if (need_clip_mask)
+	    _cairo_pattern_fini (&mask.base);
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) {
+	status =
+	    _cairo_xcb_surface_fixup_unbounded_boxes (dst, extents,
+						      clip, boxes);
+    }
+
+    _cairo_xcb_connection_release (dst->connection);
+
+    return status;
+}
+
+static cairo_bool_t
+cairo_boxes_for_each_box (cairo_boxes_t *boxes,
+			  cairo_bool_t (*func) (cairo_box_t *box,
+						void *data),
+			  void *data)
+{
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++)
+	    if (! func (&chunk->base[i], data))
+		return FALSE;
+    }
+
+    return TRUE;
+}
+
+struct _image_contains_box {
+    int width, height;
+    int tx, ty;
+};
+
+static cairo_bool_t image_contains_box (cairo_box_t *box, void *closure)
+{
+    struct _image_contains_box *data = closure;
+
+    /* The box is pixel-aligned so the truncation is safe. */
+    return
+	_cairo_fixed_integer_part (box->p1.x) + data->tx >= 0 &&
+	_cairo_fixed_integer_part (box->p1.y) + data->ty >= 0 &&
+	_cairo_fixed_integer_part (box->p2.x) + data->tx <= data->width &&
+	_cairo_fixed_integer_part (box->p2.y) + data->ty <= data->height;
+}
+
+struct _image_upload_box {
+    cairo_xcb_surface_t *surface;
+    cairo_image_surface_t *image;
+    xcb_gcontext_t gc;
+    int tx, ty;
+};
+
+static cairo_bool_t image_upload_box (cairo_box_t *box, void *closure)
+{
+    const struct _image_upload_box *iub = closure;
+    /* The box is pixel-aligned so the truncation is safe. */
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+    int bpp = PIXMAN_FORMAT_BPP (iub->image->pixman_format);
+    int len = CAIRO_STRIDE_FOR_WIDTH_BPP (width, bpp);
+    if (len == iub->image->stride) {
+	_cairo_xcb_connection_put_image (iub->surface->connection,
+					 iub->surface->drawable,
+					 iub->gc,
+					 width, height,
+					 x, y,
+					 iub->image->depth,
+					 iub->image->stride,
+					 iub->image->data +
+					 (y + iub->ty) * iub->image->stride +
+					 (x + iub->tx) * bpp/8);
+    } else {
+	_cairo_xcb_connection_put_subimage (iub->surface->connection,
+					    iub->surface->drawable,
+					    iub->gc,
+					    x + iub->tx,
+					    y + iub->ty,
+					    width, height,
+					    bpp / 8,
+					    iub->image->stride,
+					    x, y,
+					    iub->image->depth,
+					    iub->image->data);
+    }
+
+    return TRUE;
+}
+
+static cairo_status_t
+_upload_image_inplace (cairo_xcb_surface_t *surface,
+		       const cairo_pattern_t *source,
+		       cairo_boxes_t *boxes)
+{
+    const cairo_surface_pattern_t *pattern;
+    struct _image_contains_box icb;
+    struct _image_upload_box iub;
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+    int tx, ty;
+
+    if (! boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    if (! _cairo_surface_is_image (pattern->surface))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Have we already upload this image to a pixmap? */
+    {
+	cairo_xcb_picture_t *snapshot;
+
+	snapshot = (cairo_xcb_picture_t *)
+	    _cairo_surface_has_snapshot (pattern->surface, &_cairo_xcb_picture_backend);
+	if (snapshot != NULL) {
+	    if (snapshot->screen == surface->screen)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+	}
+    }
+
+    image = (cairo_image_surface_t *) pattern->surface;
+    if (image->format == CAIRO_FORMAT_INVALID)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (image->depth != surface->depth)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix, &tx, &ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Check that the data is entirely within the image */
+    icb.width = image->width;
+    icb.height = image->height;
+    icb.tx = tx;
+    icb.ty = ty;
+    if (! cairo_boxes_for_each_box (boxes, image_contains_box, &icb))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface->deferred_clear) {
+	status = _cairo_xcb_surface_clear (surface);
+	if (unlikely (status))
+	    return status;
+    }
+
+    status = _cairo_xcb_connection_acquire (surface->connection);
+    if (unlikely (status))
+	return status;
+
+    iub.surface = surface;
+    iub.image = image;
+    iub.gc = _cairo_xcb_screen_get_gc (surface->screen,
+				       surface->drawable,
+				       image->depth);
+    iub.tx = tx;
+    iub.ty = ty;
+    cairo_boxes_for_each_box (boxes, image_upload_box, &iub);
+
+    _cairo_xcb_screen_put_gc (surface->screen, image->depth, iub.gc);
+    _cairo_xcb_connection_release (surface->connection);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+trim_extents_to_traps (cairo_composite_rectangles_t *extents,
+		       cairo_traps_t *traps)
+{
+    cairo_box_t box;
+
+    /* X trims the affected area to the extents of the trapezoids, so
+     * we need to compensate when fixing up the unbounded area.
+    */
+    _cairo_traps_extents (traps, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_bool_t
+_mono_edge_is_vertical (const cairo_line_t *line)
+{
+    return _cairo_fixed_integer_round_down (line->p1.x) == _cairo_fixed_integer_round_down (line->p2.x);
+}
+
+static cairo_bool_t
+_traps_are_pixel_aligned (cairo_traps_t *traps,
+			  cairo_antialias_t antialias)
+{
+    int i;
+
+    if (antialias == CAIRO_ANTIALIAS_NONE) {
+	for (i = 0; i < traps->num_traps; i++) {
+	    if (! _mono_edge_is_vertical (&traps->traps[i].left)   ||
+		! _mono_edge_is_vertical (&traps->traps[i].right))
+	    {
+		traps->maybe_region = FALSE;
+		return FALSE;
+	    }
+	}
+    } else {
+	for (i = 0; i < traps->num_traps; i++) {
+	    if (traps->traps[i].left.p1.x != traps->traps[i].left.p2.x   ||
+		traps->traps[i].right.p1.x != traps->traps[i].right.p2.x ||
+		! _cairo_fixed_is_integer (traps->traps[i].top)          ||
+		! _cairo_fixed_is_integer (traps->traps[i].bottom)       ||
+		! _cairo_fixed_is_integer (traps->traps[i].left.p1.x)    ||
+		! _cairo_fixed_is_integer (traps->traps[i].right.p1.x))
+	    {
+		traps->maybe_region = FALSE;
+		return FALSE;
+	    }
+	}
+    }
+
+    return TRUE;
+}
+
+static void
+_boxes_for_traps (cairo_boxes_t *boxes,
+		  cairo_traps_t *traps,
+		  cairo_antialias_t antialias)
+{
+    int i, j;
+
+    _cairo_boxes_init (boxes);
+
+    boxes->chunks.base  = (cairo_box_t *) traps->traps;
+    boxes->chunks.size  = traps->num_traps;
+
+    if (antialias != CAIRO_ANTIALIAS_NONE) {
+	for (i = j = 0; i < traps->num_traps; i++) {
+	    /* Note the traps and boxes alias so we need to take the local copies first. */
+	    cairo_fixed_t x1 = traps->traps[i].left.p1.x;
+	    cairo_fixed_t x2 = traps->traps[i].right.p1.x;
+	    cairo_fixed_t y1 = traps->traps[i].top;
+	    cairo_fixed_t y2 = traps->traps[i].bottom;
+
+	    if (x1 == x2 || y1 == y2)
+		    continue;
+
+	    boxes->chunks.base[j].p1.x = x1;
+	    boxes->chunks.base[j].p1.y = y1;
+	    boxes->chunks.base[j].p2.x = x2;
+	    boxes->chunks.base[j].p2.y = y2;
+	    j++;
+
+	    if (boxes->is_pixel_aligned) {
+		boxes->is_pixel_aligned =
+		    _cairo_fixed_is_integer (x1) && _cairo_fixed_is_integer (y1) &&
+		    _cairo_fixed_is_integer (x2) && _cairo_fixed_is_integer (y2);
+	    }
+	}
+    } else {
+	boxes->is_pixel_aligned = TRUE;
+
+	for (i = j = 0; i < traps->num_traps; i++) {
+	    /* Note the traps and boxes alias so we need to take the local copies first. */
+	    cairo_fixed_t x1 = traps->traps[i].left.p1.x;
+	    cairo_fixed_t x2 = traps->traps[i].right.p1.x;
+	    cairo_fixed_t y1 = traps->traps[i].top;
+	    cairo_fixed_t y2 = traps->traps[i].bottom;
+
+	    /* round down here to match Pixman's behavior when using traps. */
+	    boxes->chunks.base[j].p1.x = _cairo_fixed_round_down (x1);
+	    boxes->chunks.base[j].p1.y = _cairo_fixed_round_down (y1);
+	    boxes->chunks.base[j].p2.x = _cairo_fixed_round_down (x2);
+	    boxes->chunks.base[j].p2.y = _cairo_fixed_round_down (y2);
+
+	    j += (boxes->chunks.base[j].p1.x != boxes->chunks.base[j].p2.x &&
+		  boxes->chunks.base[j].p1.y != boxes->chunks.base[j].p2.y);
+	}
+    }
+
+    boxes->num_boxes    = j;
+    boxes->chunks.count = j;
+}
+
+static cairo_status_t
+_composite_polygon (cairo_xcb_surface_t *dst,
+		    cairo_operator_t op,
+		    const cairo_pattern_t *source,
+		    cairo_polygon_t *polygon,
+		    cairo_antialias_t antialias,
+		    cairo_fill_rule_t fill_rule,
+		    cairo_composite_rectangles_t *extents)
+{
+    composite_traps_info_t traps;
+    cairo_bool_t clip_surface = ! _cairo_clip_is_region (extents->clip);
+    cairo_region_t *clip_region = _cairo_clip_get_region (extents->clip);
+    cairo_status_t status;
+
+    if (polygon->num_edges == 0) {
+	status = CAIRO_STATUS_SUCCESS;
+
+	if (! extents->is_bounded) {
+	    if (cairo_region_contains_rectangle (clip_region, &extents->unbounded) == CAIRO_REGION_OVERLAP_IN)
+		clip_region = NULL;
+
+	    if (clip_surface == FALSE) {
+		if (clip_region != NULL) {
+		    status = _cairo_xcb_surface_set_clip_region (dst, clip_region);
+		    if (unlikely (status))
+			return status;
+		}
+
+		status = _cairo_xcb_surface_fixup_unbounded (dst, extents);
+
+		if (clip_region != NULL)
+		    _cairo_xcb_surface_clear_clip_region (dst);
+	    } else {
+		status = _cairo_xcb_surface_fixup_unbounded_with_mask (dst,
+								       extents,
+								       extents->clip);
+	    }
+	}
+
+	return status;
+    }
+
+    if (extents->clip->path != NULL && extents->is_bounded) {
+	cairo_polygon_t clipper;
+	cairo_fill_rule_t clipper_fill_rule;
+	cairo_antialias_t clipper_antialias;
+
+	status = _cairo_clip_get_polygon (extents->clip,
+					  &clipper,
+					  &clipper_fill_rule,
+					  &clipper_antialias);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    if (clipper_antialias == antialias) {
+		status = _cairo_polygon_intersect (polygon, fill_rule,
+						   &clipper, clipper_fill_rule);
+		if (likely (status == CAIRO_STATUS_SUCCESS)) {
+		    cairo_clip_t * clip = _cairo_clip_copy_region (extents->clip);
+		    _cairo_clip_destroy (extents->clip);
+		    extents->clip = clip;
+
+		    fill_rule = CAIRO_FILL_RULE_WINDING;
+		}
+		_cairo_polygon_fini (&clipper);
+	    }
+	}
+    }
+
+    _cairo_traps_init (&traps.traps);
+
+    status = _cairo_bentley_ottmann_tessellate_polygon (&traps.traps, polygon, fill_rule);
+    if (unlikely (status))
+	goto CLEANUP_TRAPS;
+
+    if (traps.traps.has_intersections) {
+	if (traps.traps.is_rectangular)
+	    status = _cairo_bentley_ottmann_tessellate_rectangular_traps (&traps.traps, CAIRO_FILL_RULE_WINDING);
+	else if (traps.traps.is_rectilinear)
+	    status = _cairo_bentley_ottmann_tessellate_rectilinear_traps (&traps.traps, CAIRO_FILL_RULE_WINDING);
+	else
+	    status = _cairo_bentley_ottmann_tessellate_traps (&traps.traps, CAIRO_FILL_RULE_WINDING);
+	if (unlikely (status))
+	    goto CLEANUP_TRAPS;
+    }
+
+    /* Use a fast path if the trapezoids consist of a simple region,
+     * but we can only do this if we do not have a clip surface, or can
+     * substitute the mask with the clip.
+     */
+    if (traps.traps.maybe_region &&
+	_traps_are_pixel_aligned (&traps.traps, antialias) &&
+	(! clip_surface ||
+	 (extents->is_bounded && op != CAIRO_OPERATOR_SOURCE)))
+    {
+	cairo_boxes_t boxes;
+
+	_boxes_for_traps (&boxes, &traps.traps, antialias);
+	status = _clip_and_composite_boxes (dst, op, source, &boxes, extents);
+    }
+    else
+    {
+	/* Otherwise render the trapezoids to a mask and composite in the usual
+	 * fashion.
+	 */
+	traps.antialias = antialias;
+	status = trim_extents_to_traps (extents, &traps.traps);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    unsigned int flags = 0;
+
+	    /* For unbounded operations, the X11 server will estimate the
+	     * affected rectangle and apply the operation to that. However,
+	     * there are cases where this is an overestimate (e.g. the
+	     * clip-fill-{eo,nz}-unbounded test).
+	     *
+	     * The clip will trim that overestimate to our expectations.
+	     */
+	    if (! extents->is_bounded)
+		flags |= FORCE_CLIP_REGION;
+
+	    status = _clip_and_composite (dst, op, source, _composite_traps,
+					  NULL, &traps, extents,
+					  need_unbounded_clip (extents) | flags);
+	}
+    }
+
+CLEANUP_TRAPS:
+    _cairo_traps_fini (&traps.traps);
+
+    return status;
+}
+
+static cairo_status_t
+_clip_and_composite_boxes (cairo_xcb_surface_t *dst,
+			   cairo_operator_t op,
+			   const cairo_pattern_t *src,
+			   cairo_boxes_t *boxes,
+			   cairo_composite_rectangles_t *extents)
+{
+    composite_traps_info_t info;
+    cairo_int_status_t status;
+
+    if (boxes->num_boxes == 0 && extents->is_bounded)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (boxes->is_pixel_aligned && _cairo_clip_is_region (extents->clip) &&
+	(op == CAIRO_OPERATOR_SOURCE ||
+	 (dst->base.is_clear && (op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD))))
+    {
+	if (boxes->num_boxes == 1 &&
+	    extents->bounded.width  == dst->width &&
+	    extents->bounded.height == dst->height)
+	{
+	    op = CAIRO_OPERATOR_SOURCE;
+	    dst->deferred_clear = FALSE;
+	}
+
+	status = _upload_image_inplace (dst, src, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    /* Can we reduce drawing through a clip-mask to simply drawing the clip? */
+    if (dst->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS &&
+	    extents->clip->path != NULL && extents->is_bounded) {
+	cairo_polygon_t polygon;
+	cairo_fill_rule_t fill_rule;
+	cairo_antialias_t antialias;
+	cairo_clip_t *clip;
+
+	clip = _cairo_clip_copy (extents->clip);
+	clip = _cairo_clip_intersect_boxes (clip, boxes);
+	if (_cairo_clip_is_all_clipped (clip))
+		return CAIRO_INT_STATUS_NOTHING_TO_DO;
+
+	status = _cairo_clip_get_polygon (clip, &polygon,
+					  &fill_rule, &antialias);
+	_cairo_clip_path_destroy (clip->path);
+	clip->path = NULL;
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    cairo_clip_t *saved_clip = extents->clip;
+	    extents->clip = clip;
+	    status = _composite_polygon (dst, op, src,
+					 &polygon,
+					 antialias,
+					 fill_rule,
+					 extents);
+	    if (extents->clip != clip)
+		clip = NULL;
+	    extents->clip = saved_clip;
+	    _cairo_polygon_fini (&polygon);
+	}
+	if (clip)
+	    _cairo_clip_destroy (clip);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    if (dst->deferred_clear) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (boxes->is_pixel_aligned &&
+	_cairo_clip_is_region (extents->clip) &&
+	op == CAIRO_OPERATOR_SOURCE) {
+	status = _upload_image_inplace (dst, src, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    if ((dst->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE) == 0)
+	return _core_boxes (dst, op, src, boxes, extents);
+
+    /* Use a fast path if the boxes are pixel aligned */
+    status = _composite_boxes (dst, op, src, boxes, extents);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    if ((dst->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS) == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Otherwise render via a mask and composite in the usual fashion.  */
+    status = _cairo_traps_init_boxes (&info.traps, boxes);
+    if (unlikely (status))
+	return status;
+
+    info.antialias = CAIRO_ANTIALIAS_DEFAULT;
+    status = trim_extents_to_traps (extents, &info.traps);
+    if (status == CAIRO_INT_STATUS_SUCCESS) {
+	status = _clip_and_composite (dst, op, src,
+				      _composite_traps, NULL, &info,
+				      extents, need_unbounded_clip (extents));
+    }
+
+    _cairo_traps_fini (&info.traps);
+    return status;
+}
+
+static cairo_int_status_t
+_composite_mask (void				*closure,
+		 cairo_xcb_surface_t		*dst,
+		 cairo_operator_t		 op,
+		 const cairo_pattern_t		*src_pattern,
+		 int				 dst_x,
+		 int				 dst_y,
+		 const cairo_rectangle_int_t	*extents,
+		 cairo_clip_t			*clip)
+{
+    const cairo_pattern_t *mask_pattern = closure;
+    cairo_xcb_picture_t *src, *mask = NULL;
+    cairo_status_t status;
+
+    if (dst->base.is_clear) {
+	if (op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD)
+	    op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    if (op == CAIRO_OPERATOR_SOURCE && clip == NULL)
+	dst->deferred_clear = FALSE;
+
+    if (dst->deferred_clear) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status))
+		return status;
+    }
+
+    if (src_pattern != NULL) {
+	src = _cairo_xcb_picture_for_pattern (dst, src_pattern, extents);
+	if (unlikely (src->base.status))
+	    return src->base.status;
+
+	mask = _cairo_xcb_picture_for_pattern (dst, mask_pattern, extents);
+	if (unlikely (mask->base.status)) {
+	    cairo_surface_destroy (&src->base);
+	    return mask->base.status;
+	}
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						_render_operator (op),
+						src->picture,
+						mask->picture,
+						dst->picture,
+						extents->x + src->x,  extents->y + src->y,
+						extents->x + mask->x, extents->y + mask->y,
+						extents->x - dst_x,   extents->y - dst_y,
+						extents->width,       extents->height);
+	cairo_surface_destroy (&mask->base);
+	cairo_surface_destroy (&src->base);
+    } else {
+	src = _cairo_xcb_picture_for_pattern (dst, mask_pattern, extents);
+	if (unlikely (src->base.status))
+	    return src->base.status;
+
+	_cairo_xcb_connection_render_composite (dst->connection,
+						_render_operator (op),
+						src->picture,
+						XCB_NONE,
+						dst->picture,
+						extents->x + src->x,  extents->y + src->y,
+						0, 0,
+						extents->x - dst_x,   extents->y - dst_y,
+						extents->width,       extents->height);
+	cairo_surface_destroy (&src->base);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct composite_box_info {
+    cairo_xcb_surface_t *dst;
+    cairo_xcb_picture_t *src;
+    uint8_t op;
+};
+
+static void composite_box(void *closure,
+			  int16_t x, int16_t y,
+			  int16_t w, int16_t h,
+			  uint16_t coverage)
+{
+    struct composite_box_info *info = closure;
+
+    if (coverage < 0xff00) {
+	cairo_xcb_picture_t *mask;
+	cairo_color_t color;
+
+	color.red_short = color.green_short = color.blue_short = 0;
+	color.alpha_short = coverage;
+
+	mask = _solid_picture (info->dst, &color);
+	if (likely (mask->base.status == CAIRO_STATUS_SUCCESS)) {
+	    _cairo_xcb_connection_render_composite (info->dst->connection,
+						    info->op,
+						    info->src->picture,
+						    mask->picture,
+						    info->dst->picture,
+						    x + info->src->x,  y + info->src->y,
+						    0,                 0,
+						    x,                 y,
+						    w,                 h);
+	}
+	cairo_surface_destroy (&mask->base);
+    } else {
+	_cairo_xcb_connection_render_composite (info->dst->connection,
+						info->op,
+						info->src->picture,
+						XCB_NONE,
+						info->dst->picture,
+						x + info->src->x,  y + info->src->y,
+						0,                 0,
+						x,                 y,
+						w,                 h);
+    }
+}
+
+static cairo_int_status_t
+_composite_mask_clip_boxes (void			*closure,
+			    cairo_xcb_surface_t		*dst,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*src_pattern,
+			    int				 dst_x,
+			    int				 dst_y,
+			    const cairo_rectangle_int_t	*extents,
+			    cairo_clip_t		*clip)
+{
+    struct composite_box_info info;
+    cairo_status_t status;
+    int i;
+
+    assert (src_pattern == NULL);
+    assert (op == CAIRO_OPERATOR_ADD);
+    assert (dst->base.is_clear);
+
+    if (clip->num_boxes > 1) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status))
+	    return status;
+    }
+
+    info.op = XCB_RENDER_PICT_OP_SRC;
+    info.dst = dst;
+    info.src = _cairo_xcb_picture_for_pattern (dst, closure, extents);
+    if (unlikely (info.src->base.status))
+	return info.src->base.status;
+
+    info.src->x += dst_x;
+    info.src->y += dst_y;
+
+    for (i = 0; i < clip->num_boxes; i++)
+	do_unaligned_box(composite_box, &info, &clip->boxes[i], dst_x, dst_y);
+    cairo_surface_destroy (&info.src->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_composite_mask_clip (void				*closure,
+		      cairo_xcb_surface_t		*dst,
+		      cairo_operator_t			 op,
+		      const cairo_pattern_t		*src_pattern,
+		      int				 dst_x,
+		      int				 dst_y,
+		      const cairo_rectangle_int_t	*extents,
+		      cairo_clip_t			*clip)
+{
+    const cairo_pattern_t *mask_pattern = closure;
+    cairo_polygon_t polygon;
+    cairo_fill_rule_t fill_rule;
+    composite_traps_info_t info;
+    cairo_status_t status;
+
+    assert (src_pattern == NULL);
+    assert (op == CAIRO_OPERATOR_ADD);
+    assert (dst->base.is_clear);
+
+    status = _cairo_clip_get_polygon (clip, &polygon,
+				      &fill_rule, &info.antialias);
+    if (unlikely (status))
+	return status;
+
+    _cairo_traps_init (&info.traps);
+    status = _cairo_bentley_ottmann_tessellate_polygon (&info.traps,
+							&polygon,
+							fill_rule);
+    _cairo_polygon_fini (&polygon);
+    if (unlikely (status))
+	return status;
+
+    if (info.traps.has_intersections) {
+	if (info.traps.is_rectangular)
+	    status = _cairo_bentley_ottmann_tessellate_rectangular_traps (&info.traps, CAIRO_FILL_RULE_WINDING);
+	else if (info.traps.is_rectilinear)
+	    status = _cairo_bentley_ottmann_tessellate_rectilinear_traps (&info.traps, CAIRO_FILL_RULE_WINDING);
+	else
+	    status = _cairo_bentley_ottmann_tessellate_traps (&info.traps, CAIRO_FILL_RULE_WINDING);
+	if (unlikely (status)) {
+	    _cairo_traps_fini (&info.traps);
+	    return status;
+	}
+    }
+
+    status = _composite_traps (&info,
+			       dst, CAIRO_OPERATOR_SOURCE, mask_pattern,
+			       dst_x, dst_y,
+			       extents, NULL);
+    _cairo_traps_fini (&info.traps);
+
+    return status;
+}
+
+struct composite_opacity_info {
+    uint8_t op;
+    cairo_xcb_surface_t *dst;
+    cairo_xcb_picture_t *src;
+    double opacity;
+};
+
+static void composite_opacity(void *closure,
+			      int16_t x, int16_t y,
+			      int16_t w, int16_t h,
+			      uint16_t coverage)
+{
+    struct composite_opacity_info *info = closure;
+    cairo_xcb_picture_t *mask;
+    cairo_color_t color;
+
+    color.red_short = color.green_short = color.blue_short = 0;
+    color.alpha_short = info->opacity * coverage;
+
+    mask = _solid_picture (info->dst, &color);
+    if (likely (mask->base.status == CAIRO_STATUS_SUCCESS)) {
+	if (info->src) {
+	    _cairo_xcb_connection_render_composite (info->dst->connection,
+						    info->op,
+						    info->src->picture,
+						    mask->picture,
+						    info->dst->picture,
+						    x + info->src->x,  y + info->src->y,
+						    0,                 0,
+						    x,                 y,
+						    w,                 h);
+	} else {
+	    _cairo_xcb_connection_render_composite (info->dst->connection,
+						    info->op,
+						    mask->picture,
+						    XCB_NONE,
+						    info->dst->picture,
+						    0,                 0,
+						    0,                 0,
+						    x,                 y,
+						    w,                 h);
+	}
+    }
+
+    cairo_surface_destroy (&mask->base);
+}
+
+static cairo_int_status_t
+_composite_opacity_boxes (void				*closure,
+			  cairo_xcb_surface_t		*dst,
+			  cairo_operator_t		 op,
+			  const cairo_pattern_t		*src_pattern,
+			  int				 dst_x,
+			  int				 dst_y,
+			  const cairo_rectangle_int_t	*extents,
+			  cairo_clip_t			*clip)
+{
+    const cairo_solid_pattern_t *mask_pattern = closure;
+    struct composite_opacity_info info;
+    cairo_status_t status;
+    int i;
+
+    if (dst->base.is_clear) {
+	if (op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD)
+	    op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    if (op == CAIRO_OPERATOR_SOURCE &&
+	(clip == NULL ||
+	 (clip->extents.width >= extents->width &&
+	  clip->extents.height >= extents->height)))
+	dst->deferred_clear = FALSE;
+
+    if (dst->deferred_clear) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status))
+	    return status;
+    }
+
+    info.op = _render_operator (op);
+    info.dst = dst;
+
+    if (src_pattern != NULL) {
+	info.src = _cairo_xcb_picture_for_pattern (dst, src_pattern, extents);
+	if (unlikely (info.src->base.status))
+	    return info.src->base.status;
+    } else
+	info.src = NULL;
+
+    info.opacity = mask_pattern->color.alpha;
+
+    /* XXX for lots of boxes create a clip region for the fully opaque areas */
+    if (clip) {
+	for (i = 0; i < clip->num_boxes; i++)
+	    do_unaligned_box(composite_opacity, &info,
+			     &clip->boxes[i], dst_x, dst_y);
+    } else {
+	composite_opacity(&info,
+			  extents->x - dst_x,
+			  extents->y - dst_y,
+			  extents->width,
+			  extents->height,
+			  0xffff);
+    }
+    cairo_surface_destroy (&info.src->base);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* high level rasteriser -> compositor */
+
+cairo_int_status_t
+_cairo_xcb_render_compositor_paint (const cairo_compositor_t     *compositor,
+				    cairo_composite_rectangles_t *composite)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) composite->surface;
+    cairo_operator_t op = composite->op;
+    cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_boxes_t boxes;
+    cairo_status_t status;
+
+    if (unlikely (! _operator_is_supported (surface->connection->flags, op)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface->connection->flags & (CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS |
+				       CAIRO_XCB_RENDER_HAS_COMPOSITE)) == 0)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (composite->clip == NULL &&
+	source->type == CAIRO_PATTERN_TYPE_SOLID &&
+	(op == CAIRO_OPERATOR_SOURCE ||
+	 op == CAIRO_OPERATOR_CLEAR ||
+	 (surface->base.is_clear &&
+	  (op == CAIRO_OPERATOR_ADD || op == CAIRO_OPERATOR_OVER))))
+    {
+	surface->deferred_clear = TRUE;
+	surface->deferred_clear_color = composite->source_pattern.solid.color;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+     _cairo_clip_steal_boxes(composite->clip, &boxes);
+     status = _clip_and_composite_boxes (surface, op, source, &boxes, composite);
+     _cairo_clip_unsteal_boxes (composite->clip, &boxes);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_xcb_render_compositor_mask (const cairo_compositor_t     *compositor,
+				   cairo_composite_rectangles_t *composite)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) composite->surface;
+    cairo_operator_t op = composite->op;
+    cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_pattern_t *mask = &composite->mask_pattern.base;
+    cairo_status_t status;
+
+    if (unlikely (! _operator_is_supported (surface->connection->flags, op)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE) == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SOLID &&
+	composite->clip->path == NULL &&
+	! _cairo_clip_is_region (composite->clip)) {
+	status = _clip_and_composite (surface, op, source,
+				      _composite_opacity_boxes,
+				      _composite_opacity_boxes,
+				      (void *) mask,
+				      composite, need_unbounded_clip (composite));
+    } else {
+	xcb_draw_func_t mask_func = NULL;
+	if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS)
+	    mask_func = composite->clip->path ? _composite_mask_clip : _composite_mask_clip_boxes;
+	status = _clip_and_composite (surface, op, source,
+				      _composite_mask, mask_func,
+				      (void *) mask,
+				      composite, need_bounded_clip (composite));
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_render_stroke_as_polygon (cairo_xcb_surface_t	*dst,
+					     cairo_operator_t		 op,
+					     const cairo_pattern_t	*source,
+					     const cairo_path_fixed_t		*path,
+					     const cairo_stroke_style_t	*stroke_style,
+					     const cairo_matrix_t	*ctm,
+					     const cairo_matrix_t	*ctm_inverse,
+					     double			 tolerance,
+					     cairo_antialias_t		 antialias,
+					     cairo_composite_rectangles_t *extents)
+{
+    cairo_polygon_t polygon;
+    cairo_status_t status;
+
+    _cairo_polygon_init_with_clip (&polygon, extents->clip);
+    status = _cairo_path_fixed_stroke_to_polygon (path,
+						  stroke_style,
+						  ctm, ctm_inverse,
+						  tolerance,
+						  &polygon);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status = _composite_polygon (dst, op, source,
+				     &polygon, antialias,
+				     CAIRO_FILL_RULE_WINDING,
+				     extents);
+    }
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_render_stroke_via_mask (cairo_xcb_surface_t		*dst,
+					   cairo_operator_t		 op,
+					   const cairo_pattern_t	*source,
+					   const cairo_path_fixed_t		*path,
+					   const cairo_stroke_style_t	*stroke_style,
+					   const cairo_matrix_t		*ctm,
+					   const cairo_matrix_t		*ctm_inverse,
+					   double			 tolerance,
+					   cairo_antialias_t		 antialias,
+					   cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *image;
+    cairo_status_t status;
+    cairo_clip_t *clip;
+    int x, y;
+
+    x = extents->bounded.x;
+    y = extents->bounded.y;
+    image = _cairo_xcb_surface_create_similar_image (dst, CAIRO_FORMAT_A8,
+						     extents->bounded.width,
+						     extents->bounded.height);
+    if (unlikely (image->status))
+	return image->status;
+
+    clip = _cairo_clip_copy_region (extents->clip);
+    status = _cairo_surface_offset_stroke (image, x, y,
+					   CAIRO_OPERATOR_ADD,
+					   &_cairo_pattern_white.base,
+					   path, stroke_style,
+					   ctm, ctm_inverse,
+					   tolerance, antialias,
+					   clip);
+    _cairo_clip_destroy (clip);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	cairo_surface_pattern_t mask;
+
+	_cairo_pattern_init_for_surface (&mask, image);
+	mask.base.filter = CAIRO_FILTER_NEAREST;
+
+	cairo_matrix_init_translate (&mask.base.matrix, -x, -y);
+	status = _clip_and_composite (dst, op, source,
+				      _composite_mask, NULL, &mask.base,
+				      extents, need_bounded_clip (extents));
+	_cairo_pattern_fini (&mask.base);
+    }
+
+    cairo_surface_finish (image);
+    cairo_surface_destroy (image);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_xcb_render_compositor_stroke (const cairo_compositor_t     *compositor,
+				     cairo_composite_rectangles_t *composite,
+				     const cairo_path_fixed_t     *path,
+				     const cairo_stroke_style_t   *style,
+				     const cairo_matrix_t         *ctm,
+				     const cairo_matrix_t         *ctm_inverse,
+				     double                        tolerance,
+				     cairo_antialias_t             antialias)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) composite->surface;
+    cairo_operator_t op = composite->op;
+    cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_int_status_t status;
+
+    if (unlikely (! _operator_is_supported (surface->connection->flags, op)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface->connection->flags & (CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS |
+			   CAIRO_XCB_RENDER_HAS_COMPOSITE)) == 0)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, composite->clip);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								style,
+								ctm,
+								antialias,
+								&boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = _clip_and_composite_boxes (surface, op, source,
+						&boxes, composite);
+	}
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS) {
+	    status = _cairo_xcb_surface_render_stroke_as_polygon (surface, op, source,
+								  path, style,
+								  ctm, ctm_inverse,
+								  tolerance, antialias,
+								  composite);
+	} else if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE) {
+	    status = _cairo_xcb_surface_render_stroke_via_mask (surface, op, source,
+								path, style,
+								ctm, ctm_inverse,
+								tolerance, antialias,
+								composite);
+	} else {
+	    ASSERT_NOT_REACHED;
+	}
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_render_fill_as_polygon (cairo_xcb_surface_t	*dst,
+					   cairo_operator_t	 op,
+					   const cairo_pattern_t*source,
+					   const cairo_path_fixed_t	*path,
+					   cairo_fill_rule_t	 fill_rule,
+					   double		 tolerance,
+					   cairo_antialias_t	 antialias,
+					   cairo_composite_rectangles_t *extents)
+{
+    cairo_polygon_t polygon;
+    cairo_status_t status;
+
+    _cairo_polygon_init_with_clip (&polygon, extents->clip);
+    status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status = _composite_polygon (dst, op, source,
+				     &polygon,
+				     antialias,
+				     fill_rule,
+				     extents);
+    }
+    _cairo_polygon_fini (&polygon);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_render_fill_via_mask (cairo_xcb_surface_t	*dst,
+					 cairo_operator_t	 op,
+					 const cairo_pattern_t	*source,
+					 const cairo_path_fixed_t	*path,
+					 cairo_fill_rule_t	 fill_rule,
+					 double			 tolerance,
+					 cairo_antialias_t	 antialias,
+					 cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *image;
+    cairo_status_t status;
+    cairo_clip_t *clip;
+    int x, y;
+
+    x = extents->bounded.x;
+    y = extents->bounded.y;
+    image = _cairo_xcb_surface_create_similar_image (dst, CAIRO_FORMAT_A8,
+						     extents->bounded.width,
+						     extents->bounded.height);
+    if (unlikely (image->status))
+	return image->status;
+
+    clip = _cairo_clip_copy_region (extents->clip);
+    status = _cairo_surface_offset_fill (image, x, y,
+					 CAIRO_OPERATOR_ADD,
+					 &_cairo_pattern_white.base,
+					 path, fill_rule, tolerance, antialias,
+					 clip);
+    _cairo_clip_destroy (clip);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	cairo_surface_pattern_t mask;
+
+	_cairo_pattern_init_for_surface (&mask, image);
+	mask.base.filter = CAIRO_FILTER_NEAREST;
+
+	cairo_matrix_init_translate (&mask.base.matrix, -x, -y);
+	status = _clip_and_composite (dst, op, source,
+				      _composite_mask, NULL, &mask.base,
+				      extents, need_bounded_clip (extents));
+
+	_cairo_pattern_fini (&mask.base);
+    }
+
+    cairo_surface_finish (image);
+    cairo_surface_destroy (image);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_xcb_render_compositor_fill (const cairo_compositor_t     *compositor,
+				   cairo_composite_rectangles_t *composite,
+				   const cairo_path_fixed_t     *path,
+				   cairo_fill_rule_t             fill_rule,
+				   double                        tolerance,
+				   cairo_antialias_t             antialias)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) composite->surface;
+    cairo_operator_t op = composite->op;
+    cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_int_status_t status;
+
+    if (unlikely (! _operator_is_supported (surface->connection->flags, op)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface->connection->flags & (CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS |
+				       CAIRO_XCB_RENDER_HAS_COMPOSITE)) == 0)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, composite->clip);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      antialias,
+							      &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    status = _clip_and_composite_boxes (surface, op, source,
+						&boxes, composite);
+	}
+	_cairo_boxes_fini (&boxes);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_TRAPEZOIDS) {
+	    status = _cairo_xcb_surface_render_fill_as_polygon (surface, op, source, path,
+								fill_rule, tolerance, antialias,
+								composite);
+	} else if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE) {
+	    status = _cairo_xcb_surface_render_fill_via_mask (surface, op, source, path,
+							      fill_rule, tolerance, antialias,
+							      composite);
+	} else {
+	    ASSERT_NOT_REACHED;
+	}
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_render_glyphs_via_mask (cairo_xcb_surface_t		*dst,
+					   cairo_operator_t		 op,
+					   const cairo_pattern_t	*source,
+					   cairo_scaled_font_t		*scaled_font,
+					   cairo_glyph_t		*glyphs,
+					   int				 num_glyphs,
+					   cairo_composite_rectangles_t *extents)
+{
+    cairo_surface_t *image;
+    cairo_content_t content;
+    cairo_status_t status;
+    cairo_clip_t *clip;
+    int x, y;
+
+    content = CAIRO_CONTENT_ALPHA;
+    if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL)
+	content = CAIRO_CONTENT_COLOR_ALPHA;
+
+    x = extents->bounded.x;
+    y = extents->bounded.y;
+    image = _cairo_xcb_surface_create_similar_image (dst,
+						     _cairo_format_from_content (content),
+						     extents->bounded.width,
+						     extents->bounded.height);
+    if (unlikely (image->status))
+	return image->status;
+
+    clip = _cairo_clip_copy_region (extents->clip);
+    status = _cairo_surface_offset_glyphs (image, x, y,
+					   CAIRO_OPERATOR_ADD,
+					   &_cairo_pattern_white.base,
+					   scaled_font, glyphs, num_glyphs,
+					   clip);
+    _cairo_clip_destroy (clip);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	cairo_surface_pattern_t mask;
+
+	_cairo_pattern_init_for_surface (&mask, image);
+	mask.base.filter = CAIRO_FILTER_NEAREST;
+	if (content & CAIRO_CONTENT_COLOR)
+	    mask.base.has_component_alpha = TRUE;
+
+	cairo_matrix_init_translate (&mask.base.matrix, -x, -y);
+	status = _clip_and_composite (dst, op, source,
+				      _composite_mask, NULL, &mask.base,
+				      extents, need_bounded_clip (extents));
+
+	_cairo_pattern_fini (&mask.base);
+    }
+
+    cairo_surface_finish (image);
+    cairo_surface_destroy (image);
+
+    return status;
+}
+
+/* Build a struct of the same size of #cairo_glyph_t that can be used both as
+ * an input glyph with double coordinates, and as "working" glyph with
+ * integer from-current-point offsets. */
+typedef union {
+    cairo_glyph_t d;
+    unsigned long index;
+    struct {
+        unsigned long index;
+        int x;
+        int y;
+    } i;
+} cairo_xcb_glyph_t;
+
+/* compile-time assert that #cairo_xcb_glyph_t is the same size as #cairo_glyph_t */
+COMPILE_TIME_ASSERT (sizeof (cairo_xcb_glyph_t) == sizeof (cairo_glyph_t));
+
+typedef struct {
+    cairo_scaled_font_t *font;
+    cairo_xcb_glyph_t *glyphs;
+    int num_glyphs;
+    cairo_bool_t use_mask;
+} composite_glyphs_info_t;
+
+static cairo_status_t
+_can_composite_glyphs (cairo_xcb_surface_t *dst,
+		       cairo_rectangle_int_t *extents,
+		       cairo_scaled_font_t *scaled_font,
+		       cairo_glyph_t *glyphs,
+		       int *num_glyphs)
+{
+#define GLYPH_CACHE_SIZE 64
+    cairo_box_t bbox_cache[GLYPH_CACHE_SIZE];
+    unsigned long glyph_cache[GLYPH_CACHE_SIZE];
+#undef GLYPH_CACHE_SIZE
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_glyph_t *glyphs_end, *valid_glyphs;
+    const int max_glyph_size = dst->connection->maximum_request_length - 64;
+
+    /* We must initialize the cache with values that cannot match the
+     * "hash" to guarantee that when compared for the first time they
+     * will result in a mismatch. The hash function is simply modulus,
+     * so we cannot use 0 in glyph_cache[0], but we can use it in all
+     * other array cells.
+     */
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+    glyph_cache[0] = 1;
+
+    /* Scan for oversized glyphs or glyphs outside the representable
+     * range and fallback in that case, discard glyphs outside of the
+     * image.
+     */
+    valid_glyphs = glyphs;
+    for (glyphs_end = glyphs + *num_glyphs; glyphs != glyphs_end; glyphs++) {
+	double x1, y1, x2, y2;
+	cairo_scaled_glyph_t *glyph;
+	cairo_box_t *bbox;
+	int width, height, len;
+	int g;
+
+	g = glyphs->index % ARRAY_LENGTH (glyph_cache);
+	if (glyph_cache[g] != glyphs->index) {
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 glyphs->index,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &glyph);
+	    if (unlikely (status))
+		break;
+
+	    glyph_cache[g] = glyphs->index;
+	    bbox_cache[g] = glyph->bbox;
+	}
+	bbox = &bbox_cache[g];
+
+	/* Drop glyphs outside the clipping */
+	x1 = _cairo_fixed_to_double (bbox->p1.x);
+	y1 = _cairo_fixed_to_double (bbox->p1.y);
+	y2 = _cairo_fixed_to_double (bbox->p2.y);
+	x2 = _cairo_fixed_to_double (bbox->p2.x);
+	if (unlikely (glyphs->x + x2 <= extents->x ||
+		      glyphs->y + y2 <= extents->y ||
+		      glyphs->x + x1 >= extents->x + extents->width ||
+		      glyphs->y + y1 >= extents->y + extents->height))
+	{
+	    (*num_glyphs)--;
+	    continue;
+	}
+
+	/* XRenderAddGlyph does not handle a glyph surface larger than
+	 * the extended maximum XRequest size.
+	 */
+	width  = _cairo_fixed_integer_ceil (bbox->p2.x - bbox->p1.x);
+	height = _cairo_fixed_integer_ceil (bbox->p2.y - bbox->p1.y);
+	len = CAIRO_STRIDE_FOR_WIDTH_BPP (width, 32) * height;
+	if (unlikely (len >= max_glyph_size)) {
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	    break;
+	}
+
+	/* The glyph coordinates must be representable in an int16_t.
+	 * When possible, they will be expressed as an offset from the
+	 * previous glyph, otherwise they will be an offset from the
+	 * operation extents or from the surface origin. If the last
+	 * two options are not valid, fallback.
+	 */
+	if (unlikely (glyphs->x > INT16_MAX ||
+		      glyphs->y > INT16_MAX ||
+		      glyphs->x - extents->x < INT16_MIN ||
+		      glyphs->y - extents->y < INT16_MIN))
+	{
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	    break;
+	}
+
+
+	if (unlikely (valid_glyphs != glyphs))
+	    *valid_glyphs = *glyphs;
+	valid_glyphs++;
+    }
+
+    if (unlikely (valid_glyphs != glyphs)) {
+	for (; glyphs != glyphs_end; glyphs++) {
+	    *valid_glyphs = *glyphs;
+	    valid_glyphs++;
+	}
+    }
+
+    return status;
+}
+
+/* Start a new element for the first glyph,
+ * or for any glyph that has unexpected position,
+ * or if current element has too many glyphs
+ * (Xrender limits each element to 252 glyphs, we limit them to 128)
+ *
+ * These same conditions need to be mirrored between
+ * _cairo_xcb_surface_emit_glyphs and _emit_glyph_chunks
+ */
+#define _start_new_glyph_elt(count, glyph) \
+    (((count) & 127) == 0 || (glyph)->i.x || (glyph)->i.y)
+
+/* sz_xGlyphtElt required alignment to a 32-bit boundary, so ensure we have
+ * enough room for padding */
+typedef struct {
+    uint8_t   len;
+    uint8_t   pad1;
+    uint16_t  pad2;
+    int16_t   deltax;
+    int16_t   deltay;
+} x_glyph_elt_t;
+#define _cairo_sz_x_glyph_elt_t (sizeof (x_glyph_elt_t) + 4)
+
+static void
+_cairo_xcb_font_destroy (cairo_xcb_font_t *font)
+{
+    int i;
+
+    for (i = 0; i < NUM_GLYPHSETS; i++) {
+	cairo_xcb_font_glyphset_info_t *info;
+
+	info = &font->glyphset_info[i];
+	free (info->pending_free_glyphs);
+    }
+
+    cairo_list_del (&font->base.link);
+    cairo_list_del (&font->link);
+
+    _cairo_xcb_connection_destroy (font->connection);
+
+    free (font);
+}
+
+static void
+_cairo_xcb_font_fini (cairo_scaled_font_private_t *abstract_private,
+		      cairo_scaled_font_t *scaled_font)
+{
+    cairo_xcb_font_t *font_private = (cairo_xcb_font_t *)abstract_private;
+    cairo_xcb_connection_t *connection;
+    cairo_bool_t have_connection;
+    cairo_status_t status;
+    int i;
+
+    connection = font_private->connection;
+
+    status = _cairo_xcb_connection_acquire (connection);
+    have_connection = status == CAIRO_STATUS_SUCCESS;
+
+    for (i = 0; i < NUM_GLYPHSETS; i++) {
+	cairo_xcb_font_glyphset_info_t *info;
+
+	info = &font_private->glyphset_info[i];
+	if (info->glyphset && status == CAIRO_STATUS_SUCCESS) {
+	    _cairo_xcb_connection_render_free_glyph_set (connection,
+							 info->glyphset);
+	}
+    }
+
+    if (have_connection)
+	_cairo_xcb_connection_release (connection);
+
+    _cairo_xcb_font_destroy (font_private);
+}
+
+
+static cairo_xcb_font_t *
+_cairo_xcb_font_create (cairo_xcb_connection_t *connection,
+			cairo_scaled_font_t  *font)
+{
+    cairo_xcb_font_t	*priv;
+    int i;
+
+    priv = _cairo_malloc (sizeof (cairo_xcb_font_t));
+    if (unlikely (priv == NULL))
+	return NULL;
+
+    _cairo_scaled_font_attach_private (font, &priv->base, connection,
+				       _cairo_xcb_font_fini);
+
+    priv->scaled_font = font;
+    priv->connection = _cairo_xcb_connection_reference (connection);
+    cairo_list_add (&priv->link, &connection->fonts);
+
+    for (i = 0; i < NUM_GLYPHSETS; i++) {
+	cairo_xcb_font_glyphset_info_t *info = &priv->glyphset_info[i];
+	switch (i) {
+	case GLYPHSET_INDEX_ARGB32: info->format = CAIRO_FORMAT_ARGB32; break;
+	case GLYPHSET_INDEX_A8:     info->format = CAIRO_FORMAT_A8;     break;
+	case GLYPHSET_INDEX_A1:     info->format = CAIRO_FORMAT_A1;     break;
+	default:                    ASSERT_NOT_REACHED;                          break;
+	}
+	info->xrender_format = 0;
+	info->glyphset = XCB_NONE;
+	info->pending_free_glyphs = NULL;
+    }
+
+    return priv;
+}
+
+void
+_cairo_xcb_font_close (cairo_xcb_font_t *font)
+{
+    cairo_scaled_font_t	*scaled_font;
+
+    scaled_font = font->scaled_font;
+
+    //scaled_font->surface_private = NULL;
+    _cairo_scaled_font_reset_cache (scaled_font);
+
+    _cairo_xcb_font_destroy (font);
+}
+
+static void
+_cairo_xcb_render_free_glyphs (cairo_xcb_connection_t *connection,
+			       cairo_xcb_font_glyphset_free_glyphs_t *to_free)
+{
+    _cairo_xcb_connection_render_free_glyphs (connection,
+					      to_free->glyphset,
+					      to_free->glyph_count,
+					      to_free->glyph_indices);
+}
+
+static int
+_cairo_xcb_get_glyphset_index_for_format (cairo_format_t format)
+{
+    if (format == CAIRO_FORMAT_A8)
+        return GLYPHSET_INDEX_A8;
+    if (format == CAIRO_FORMAT_A1)
+        return GLYPHSET_INDEX_A1;
+
+    assert (format == CAIRO_FORMAT_ARGB32);
+    return GLYPHSET_INDEX_ARGB32;
+}
+
+
+
+static inline cairo_xcb_font_t *
+_cairo_xcb_font_get (const cairo_xcb_connection_t *c,
+		     cairo_scaled_font_t *font)
+{
+    return (cairo_xcb_font_t *)_cairo_scaled_font_find_private (font, c);
+}
+
+
+static cairo_xcb_font_glyphset_info_t *
+_cairo_xcb_scaled_font_get_glyphset_info_for_format (cairo_xcb_connection_t *c,
+						     cairo_scaled_font_t *font,
+						     cairo_format_t       format)
+{
+    cairo_xcb_font_t *priv;
+    cairo_xcb_font_glyphset_info_t *info;
+    int glyphset_index;
+
+    glyphset_index = _cairo_xcb_get_glyphset_index_for_format (format);
+
+    priv = _cairo_xcb_font_get (c, font);
+    if (priv == NULL) {
+	priv = _cairo_xcb_font_create (c, font);
+	if (priv == NULL)
+	    return NULL;
+    }
+
+    info = &priv->glyphset_info[glyphset_index];
+    if (info->glyphset == XCB_NONE) {
+	info->glyphset = _cairo_xcb_connection_get_xid (c);
+	info->xrender_format = c->standard_formats[info->format];
+
+	_cairo_xcb_connection_render_create_glyph_set (c,
+						       info->glyphset,
+						       info->xrender_format);
+    }
+
+    return info;
+}
+
+static cairo_bool_t
+_cairo_xcb_glyphset_info_has_pending_free_glyph (
+				cairo_xcb_font_glyphset_info_t *info,
+				unsigned long glyph_index)
+{
+    if (info->pending_free_glyphs != NULL) {
+	cairo_xcb_font_glyphset_free_glyphs_t *to_free;
+	int i;
+
+	to_free = info->pending_free_glyphs;
+	for (i = 0; i < to_free->glyph_count; i++) {
+	    if (to_free->glyph_indices[i] == glyph_index) {
+		to_free->glyph_count--;
+		memmove (&to_free->glyph_indices[i],
+			 &to_free->glyph_indices[i+1],
+			 (to_free->glyph_count - i) * sizeof (to_free->glyph_indices[0]));
+		return TRUE;
+	    }
+	}
+    }
+
+    return FALSE;
+}
+
+typedef struct {
+    cairo_scaled_glyph_private_t base;
+
+    cairo_xcb_font_glyphset_info_t *glyphset;
+} cairo_xcb_glyph_private_t;
+
+static cairo_xcb_font_glyphset_info_t *
+_cairo_xcb_scaled_font_get_glyphset_info_for_pending_free_glyph (cairo_xcb_connection_t *c,
+					       cairo_scaled_font_t *font,
+					       unsigned long glyph_index,
+					       cairo_image_surface_t *surface)
+{
+    cairo_xcb_font_t *priv;
+    int i;
+
+    priv = _cairo_xcb_font_get (c, font);
+    if (priv == NULL)
+	return NULL;
+
+    if (surface != NULL) {
+        i = _cairo_xcb_get_glyphset_index_for_format (surface->format);
+
+	if (_cairo_xcb_glyphset_info_has_pending_free_glyph (
+						&priv->glyphset_info[i],
+						glyph_index))
+	{
+	    return &priv->glyphset_info[i];
+	}
+    } else {
+	for (i = 0; i < NUM_GLYPHSETS; i++) {
+	    if (_cairo_xcb_glyphset_info_has_pending_free_glyph (
+						&priv->glyphset_info[i],
+						glyph_index))
+	    {
+		return &priv->glyphset_info[i];
+	    }
+	}
+    }
+
+    return NULL;
+}
+
+static void
+_cairo_xcb_glyph_fini (cairo_scaled_glyph_private_t *glyph_private,
+		       cairo_scaled_glyph_t *glyph,
+		       cairo_scaled_font_t  *font)
+{
+    cairo_xcb_glyph_private_t *priv = (cairo_xcb_glyph_private_t *)glyph_private;
+
+    if (! font->finished) {
+	cairo_xcb_font_glyphset_info_t *info = priv->glyphset;
+	cairo_xcb_font_glyphset_free_glyphs_t *to_free;
+	cairo_xcb_font_t *font_private;
+
+	font_private = _cairo_xcb_font_get (glyph_private->key, font);
+	assert (font_private);
+
+	to_free = info->pending_free_glyphs;
+	if (to_free != NULL &&
+	    to_free->glyph_count == ARRAY_LENGTH (to_free->glyph_indices))
+	{
+	    _cairo_xcb_render_free_glyphs (font_private->connection, to_free);
+	    to_free = info->pending_free_glyphs = NULL;
+	}
+
+	if (to_free == NULL) {
+	    to_free = _cairo_malloc (sizeof (cairo_xcb_font_glyphset_free_glyphs_t));
+	    if (unlikely (to_free == NULL)) {
+		_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+		return; /* XXX cannot propagate failure */
+	    }
+
+	    to_free->glyphset = info->glyphset;
+	    to_free->glyph_count = 0;
+	    info->pending_free_glyphs = to_free;
+	}
+
+	to_free->glyph_indices[to_free->glyph_count++] =
+	    _cairo_scaled_glyph_index (glyph);
+    }
+
+    cairo_list_del (&glyph_private->link);
+    free (glyph_private);
+}
+
+
+static cairo_status_t
+_cairo_xcb_glyph_attach (cairo_xcb_connection_t  *c,
+			 cairo_scaled_glyph_t  *glyph,
+			 cairo_xcb_font_glyphset_info_t *info)
+{
+    cairo_xcb_glyph_private_t *priv;
+
+    priv = _cairo_malloc (sizeof (*priv));
+    if (unlikely (priv == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_scaled_glyph_attach_private (glyph, &priv->base, c,
+					_cairo_xcb_glyph_fini);
+    priv->glyphset = info;
+
+    glyph->dev_private = info;
+    glyph->dev_private_key = c;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_add_glyph (cairo_xcb_connection_t *connection,
+			       cairo_scaled_font_t   *font,
+			       cairo_scaled_glyph_t **scaled_glyph_out)
+{
+    xcb_render_glyphinfo_t glyph_info;
+    uint32_t glyph_index;
+    uint8_t *data;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_scaled_glyph_t *scaled_glyph = *scaled_glyph_out;
+    cairo_image_surface_t *glyph_surface = scaled_glyph->surface;
+    cairo_bool_t already_had_glyph_surface;
+    cairo_xcb_font_glyphset_info_t *info;
+
+    glyph_index = _cairo_scaled_glyph_index (scaled_glyph);
+
+    /* check to see if we have a pending XRenderFreeGlyph for this glyph */
+    info = _cairo_xcb_scaled_font_get_glyphset_info_for_pending_free_glyph (connection, font, glyph_index, glyph_surface);
+    if (info != NULL)
+	return _cairo_xcb_glyph_attach (connection, scaled_glyph, info);
+
+    if (glyph_surface == NULL) {
+	status = _cairo_scaled_glyph_lookup (font,
+					     glyph_index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS |
+					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					     scaled_glyph_out);
+	if (unlikely (status))
+	    return status;
+
+	scaled_glyph = *scaled_glyph_out;
+	glyph_surface = scaled_glyph->surface;
+	already_had_glyph_surface = FALSE;
+    } else {
+	already_had_glyph_surface = TRUE;
+    }
+
+    info = _cairo_xcb_scaled_font_get_glyphset_info_for_format (connection,
+								font,
+								glyph_surface->format);
+    if (unlikely (info == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto BAIL;
+    }
+
+#if 0
+    /* If the glyph surface has zero height or width, we create
+     * a clear 1x1 surface, to avoid various X server bugs.
+     */
+    if (glyph_surface->width == 0 || glyph_surface->height == 0) {
+	cairo_surface_t *tmp_surface;
+
+	tmp_surface = cairo_image_surface_create (info->format, 1, 1);
+	status = tmp_surface->status;
+	if (unlikely (status))
+	    goto BAIL;
+
+	tmp_surface->device_transform = glyph_surface->base.device_transform;
+	tmp_surface->device_transform_inverse = glyph_surface->base.device_transform_inverse;
+
+	glyph_surface = (cairo_image_surface_t *) tmp_surface;
+    }
+#endif
+
+    /* If the glyph format does not match the font format, then we
+     * create a temporary surface for the glyph image with the font's
+     * format.
+     */
+    if (glyph_surface->format != info->format) {
+	glyph_surface = _cairo_image_surface_coerce_to_format (glyph_surface,
+						               info->format);
+	status = glyph_surface->base.status;
+	if (unlikely (status))
+	    goto BAIL;
+    }
+
+    /* XXX: FRAGILE: We're ignore device_transform scaling here. A bug? */
+    glyph_info.x = _cairo_lround (glyph_surface->base.device_transform.x0);
+    glyph_info.y = _cairo_lround (glyph_surface->base.device_transform.y0);
+    glyph_info.width  = glyph_surface->width;
+    glyph_info.height = glyph_surface->height;
+    glyph_info.x_off = scaled_glyph->x_advance;
+    glyph_info.y_off = scaled_glyph->y_advance;
+
+    data = glyph_surface->data;
+
+    /* flip formats around */
+    switch (_cairo_xcb_get_glyphset_index_for_format (scaled_glyph->surface->format)) {
+    case GLYPHSET_INDEX_A1:
+	/* local bitmaps are always stored with bit == byte */
+	if (_cairo_is_little_endian() != (connection->root->bitmap_format_bit_order == XCB_IMAGE_ORDER_LSB_FIRST)) {
+	    int		    c = glyph_surface->stride * glyph_surface->height;
+	    const uint8_t *d;
+	    uint8_t *new, *n;
+
+	    if (c == 0)
+		break;
+
+	    new = _cairo_malloc (c);
+	    if (unlikely (new == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto BAIL;
+	    }
+
+	    n = new;
+	    d = data;
+	    do {
+		uint8_t b = *d++;
+		b = ((b << 1) & 0xaa) | ((b >> 1) & 0x55);
+		b = ((b << 2) & 0xcc) | ((b >> 2) & 0x33);
+		b = ((b << 4) & 0xf0) | ((b >> 4) & 0x0f);
+		*n++ = b;
+	    } while (--c);
+	    data = new;
+	}
+	break;
+
+    case GLYPHSET_INDEX_A8:
+	break;
+
+    case GLYPHSET_INDEX_ARGB32:
+	if (_cairo_is_little_endian() != (connection->root->image_byte_order == XCB_IMAGE_ORDER_LSB_FIRST)) {
+	    unsigned int c = glyph_surface->stride * glyph_surface->height / 4;
+	    const uint32_t *d;
+	    uint32_t *new, *n;
+
+	    if (c == 0)
+		break;
+
+	    new = _cairo_malloc (4 * c);
+	    if (unlikely (new == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto BAIL;
+	    }
+
+	    n = new;
+	    d = (uint32_t *) data;
+	    do {
+		*n++ = bswap_32 (*d);
+		d++;
+	    } while (--c);
+	    data = (uint8_t *) new;
+	}
+	break;
+
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+    /* XXX assume X server wants pixman padding. Xft assumes this as well */
+
+    _cairo_xcb_connection_render_add_glyphs (connection,
+					     info->glyphset,
+					     1, &glyph_index, &glyph_info,
+					     glyph_surface->stride * glyph_surface->height,
+					     data);
+
+    if (data != glyph_surface->data)
+	free (data);
+
+    status = _cairo_xcb_glyph_attach (connection, scaled_glyph, info);
+
+ BAIL:
+    if (glyph_surface != scaled_glyph->surface)
+	cairo_surface_destroy (&glyph_surface->base);
+
+    /* If the scaled glyph didn't already have a surface attached
+     * to it, release the created surface now that we have it
+     * uploaded to the X server.  If the surface has already been
+     * there (e.g. because image backend requested it), leave it in
+     * the cache
+     */
+    if (! already_had_glyph_surface)
+	_cairo_scaled_glyph_set_surface (scaled_glyph, font, NULL);
+
+    return status;
+}
+
+typedef void (*cairo_xcb_render_composite_text_func_t)
+	      (cairo_xcb_connection_t       *connection,
+	       uint8_t                          op,
+	       xcb_render_picture_t src,
+	       xcb_render_picture_t dst,
+	       xcb_render_pictformat_t mask_format,
+	       xcb_render_glyphset_t glyphset,
+	       int16_t                          src_x,
+	       int16_t                          src_y,
+	       uint32_t                          len,
+	       uint8_t                        *cmd);
+
+
+static cairo_status_t
+_emit_glyphs_chunk (cairo_xcb_surface_t *dst,
+		    cairo_operator_t op,
+		    cairo_xcb_picture_t *src,
+		    /* info for this chunk */
+		    cairo_xcb_glyph_t *glyphs,
+		    int num_glyphs,
+		    int width,
+		    int estimated_req_size,
+		    cairo_xcb_font_glyphset_info_t *info,
+		    xcb_render_pictformat_t mask_format)
+{
+    cairo_xcb_render_composite_text_func_t composite_text_func;
+    uint8_t stack_buf[CAIRO_STACK_BUFFER_SIZE];
+    uint8_t *buf = stack_buf;
+    x_glyph_elt_t *elt = NULL; /* silence compiler */
+    uint32_t len;
+    int i;
+
+    if (estimated_req_size > ARRAY_LENGTH (stack_buf)) {
+	buf = _cairo_malloc (estimated_req_size);
+	if (unlikely (buf == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    len = 0;
+    for (i = 0; i < num_glyphs; i++) {
+      if (_start_new_glyph_elt (i, &glyphs[i])) {
+	  if (len & 3)
+	      len += 4 - (len & 3);
+
+	  elt = (x_glyph_elt_t *) (buf + len);
+	  elt->len = 0;
+	  elt->deltax = glyphs[i].i.x;
+	  elt->deltay = glyphs[i].i.y;
+	  len += sizeof (x_glyph_elt_t);
+      }
+
+      switch (width) {
+      case 1: *(uint8_t *) (buf + len) = glyphs[i].index; break;
+      case 2: *(uint16_t *) (buf + len) = glyphs[i].index; break;
+      default:
+      case 4: *(uint32_t *) (buf + len) = glyphs[i].index; break;
+      }
+      len += width;
+      elt->len++;
+    }
+    if (len & 3)
+	len += 4 - (len & 3);
+
+    switch (width) {
+    case 1:
+	composite_text_func = _cairo_xcb_connection_render_composite_glyphs_8;
+	break;
+    case 2:
+	composite_text_func = _cairo_xcb_connection_render_composite_glyphs_16;
+	break;
+    default:
+    case 4:
+	composite_text_func = _cairo_xcb_connection_render_composite_glyphs_32;
+	break;
+    }
+    composite_text_func (dst->connection,
+			 _render_operator (op),
+			 src->picture,
+			 dst->picture,
+			 mask_format,
+			 info->glyphset,
+			 src->x + glyphs[0].i.x,
+			 src->y + glyphs[0].i.y,
+			 len, buf);
+
+    if (buf != stack_buf)
+      free (buf);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_composite_glyphs (void				*closure,
+		  cairo_xcb_surface_t		*dst,
+		  cairo_operator_t		 op,
+		  const cairo_pattern_t		*pattern,
+		  int				 dst_x,
+		  int				 dst_y,
+		  const cairo_rectangle_int_t	*extents,
+		  cairo_clip_t			*clip)
+{
+    composite_glyphs_info_t *info = closure;
+    cairo_scaled_glyph_t *glyph_cache[64];
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_fixed_t x = 0, y = 0;
+    cairo_xcb_font_glyphset_info_t *glyphset_info = NULL, *this_glyphset_info;
+    const unsigned int max_request_size = dst->connection->maximum_request_length - 64;
+    cairo_xcb_picture_t *src;
+
+    unsigned long max_index = 0;
+    int width = 1;
+
+    unsigned int request_size = 0;
+    int i;
+
+    if (dst->deferred_clear) {
+	status = _cairo_xcb_surface_clear (dst);
+	if (unlikely (status))
+		return status;
+    }
+
+    src = _cairo_xcb_picture_for_pattern (dst, pattern, extents);
+    if (unlikely (src->base.status))
+	return src->base.status;
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+
+    for (i = 0; i < info->num_glyphs; i++) {
+	cairo_scaled_glyph_t *glyph;
+	unsigned long glyph_index = info->glyphs[i].index;
+	int cache_index = glyph_index % ARRAY_LENGTH (glyph_cache);
+	int old_width = width;
+	int this_x, this_y;
+
+	glyph = glyph_cache[cache_index];
+	if (glyph == NULL ||
+	    _cairo_scaled_glyph_index (glyph) != glyph_index)
+	{
+	    status = _cairo_scaled_glyph_lookup (info->font,
+						 glyph_index,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &glyph);
+	    if (unlikely (status)) {
+		cairo_surface_destroy (&src->base);
+		return status;
+	    }
+
+	    /* Send unseen glyphs to the server */
+	    if (glyph->dev_private_key != dst->connection) {
+		status = _cairo_xcb_surface_add_glyph (dst->connection,
+						       info->font,
+						       &glyph);
+		if (unlikely (status)) {
+		    cairo_surface_destroy (&src->base);
+		    return status;
+		}
+	    }
+
+	    glyph_cache[cache_index] = glyph;
+	}
+
+	this_x = _cairo_lround (info->glyphs[i].d.x) - dst_x;
+	this_y = _cairo_lround (info->glyphs[i].d.y) - dst_y;
+
+	this_glyphset_info = glyph->dev_private;
+	if (glyphset_info == NULL)
+	    glyphset_info = this_glyphset_info;
+
+	/* Update max glyph index */
+	if (glyph_index > max_index) {
+	    max_index = glyph_index;
+	    if (max_index >= 65536)
+		width = 4;
+	    else if (max_index >= 256)
+		width = 2;
+	    if (width != old_width)
+		request_size += (width - old_width) * i;
+	}
+
+	/* If we will pass the max request size by adding this glyph,
+	 * flush current glyphs.  Note that we account for a
+	 * possible element being added below.
+	 *
+	 * Also flush if changing glyphsets, as Xrender limits one mask
+	 * format per request, so we can either break up, or use a
+	 * wide-enough mask format.  We do the former.  One reason to
+	 * prefer the latter is the fact that Xserver ADDs all glyphs
+	 * to the mask first, and then composes that to final surface,
+	 * though it's not a big deal.
+	 *
+	 * If the glyph has a coordinate which cannot be represented
+	 * as a 16-bit offset from the previous glyph, flush the
+	 * current chunk. The current glyph will be the first one in
+	 * the next chunk, thus its coordinates will be an offset from
+	 * the destination origin. This offset is guaranteed to be
+	 * representable as 16-bit offset in _can_composite_glyphs().
+	 */
+	if (request_size + width > max_request_size - _cairo_sz_x_glyph_elt_t ||
+	    this_x - x > INT16_MAX || this_x - x < INT16_MIN ||
+	    this_y - y > INT16_MAX || this_y - y < INT16_MIN ||
+	    this_glyphset_info != glyphset_info)
+	{
+	    status = _emit_glyphs_chunk (dst, op, src,
+					 info->glyphs, i,
+					 old_width, request_size,
+					 glyphset_info,
+					 info->use_mask ? glyphset_info->xrender_format : 0);
+	    if (unlikely (status)) {
+		cairo_surface_destroy (&src->base);
+		return status;
+	    }
+
+	    info->glyphs += i;
+	    info->num_glyphs -= i;
+	    i = 0;
+
+	    max_index = info->glyphs[0].index;
+	    width = max_index < 256 ? 1 : max_index < 65536 ? 2 : 4;
+
+	    request_size = 0;
+
+	    x = y = 0;
+	    glyphset_info = this_glyphset_info;
+	}
+
+	/* Convert absolute glyph position to relative-to-current-point
+	 * position */
+	info->glyphs[i].i.x = this_x - x;
+	info->glyphs[i].i.y = this_y - y;
+
+	/* Start a new element for the first glyph,
+	 * or for any glyph that has unexpected position,
+	 * or if current element has too many glyphs.
+	 *
+	 * These same conditions are mirrored in _emit_glyphs_chunk().
+	 */
+      if (_start_new_glyph_elt (i, &info->glyphs[i]))
+	    request_size += _cairo_sz_x_glyph_elt_t;
+
+	/* adjust current-position */
+	x = this_x + glyph->x_advance;
+	y = this_y + glyph->y_advance;
+
+	request_size += width;
+    }
+
+    if (i) {
+	status = _emit_glyphs_chunk (dst, op, src,
+				     info->glyphs, i,
+				     width, request_size,
+				     glyphset_info,
+				     info->use_mask ? glyphset_info->xrender_format : 0);
+    }
+
+    cairo_surface_destroy (&src->base);
+
+    return status;
+}
+
+cairo_int_status_t
+_cairo_xcb_render_compositor_glyphs (const cairo_compositor_t     *compositor,
+				     cairo_composite_rectangles_t *composite,
+				     cairo_scaled_font_t          *scaled_font,
+				     cairo_glyph_t                *glyphs,
+				     int                           num_glyphs,
+				     cairo_bool_t                  overlap)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) composite->surface;
+    cairo_operator_t op = composite->op;
+    cairo_pattern_t *source = &composite->source_pattern.base;
+    cairo_int_status_t status;
+
+    if (unlikely (! _operator_is_supported (surface->connection->flags, op)))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if ((surface->connection->flags & (CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS | CAIRO_XCB_RENDER_HAS_COMPOSITE)) == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE_GLYPHS) {
+	_cairo_scaled_font_freeze_cache (scaled_font);
+
+	status = _can_composite_glyphs (surface, &composite->bounded,
+					scaled_font, glyphs, &num_glyphs);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
+	    composite_glyphs_info_t info;
+	    unsigned flags = 0;
+
+	    info.font = scaled_font;
+	    info.glyphs = (cairo_xcb_glyph_t *) glyphs;
+	    info.num_glyphs = num_glyphs;
+	    info.use_mask =
+		overlap ||
+		! composite->is_bounded ||
+		! _cairo_clip_is_region(composite->clip);
+
+	    if (composite->mask.width  > composite->unbounded.width ||
+		composite->mask.height > composite->unbounded.height)
+	    {
+		/* Glyphs are tricky since we do not directly control the
+		 * geometry and their inked extents depend on the
+		 * individual glyph-surface size. We must set a clip region
+		 * so that the X server can trim the glyphs appropriately.
+		 */
+		flags |= FORCE_CLIP_REGION;
+	    }
+	    status = _clip_and_composite (surface, op, source,
+					  _composite_glyphs, NULL,
+					  &info, composite,
+					  need_bounded_clip (composite) |
+					  flags);
+	}
+
+	_cairo_scaled_font_thaw_cache (scaled_font);
+    }
+
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	assert (surface->connection->flags & CAIRO_XCB_RENDER_HAS_COMPOSITE);
+	status =
+	    _cairo_xcb_surface_render_glyphs_via_mask (surface, op, source,
+						       scaled_font, glyphs, num_glyphs,
+						       composite);
+    }
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/cairo-xcb-surface.c b/libs/cairo-1.16.0/src/cairo-xcb-surface.c
new file mode 100644
index 0000000..7f601bb
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb-surface.c
@@ -0,0 +1,1531 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xcb.h"
+#include "cairo-xcb-private.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-list-inline.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-compositor-private.h"
+
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_proto (cairo_xcb_surface_create);
+slim_hidden_proto (cairo_xcb_surface_create_for_bitmap);
+slim_hidden_proto (cairo_xcb_surface_create_with_xrender_format);
+#endif
+
+/**
+ * SECTION:cairo-xcb
+ * @Title: XCB Surfaces
+ * @Short_Description: X Window System rendering using the XCB library
+ * @See_Also: #cairo_surface_t
+ *
+ * The XCB surface is used to render cairo graphics to X Window System
+ * windows and pixmaps using the XCB library.
+ *
+ * Note that the XCB surface automatically takes advantage of the X render
+ * extension if it is available.
+ **/
+
+/**
+ * CAIRO_HAS_XCB_SURFACE:
+ *
+ * Defined if the xcb surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.12
+ **/
+
+cairo_surface_t *
+_cairo_xcb_surface_create_similar (void			*abstract_other,
+				   cairo_content_t	 content,
+				   int			 width,
+				   int			 height)
+{
+    cairo_xcb_surface_t *other = abstract_other;
+    cairo_xcb_surface_t *surface;
+    cairo_xcb_connection_t *connection;
+    xcb_pixmap_t pixmap;
+    cairo_status_t status;
+
+    if (unlikely(width  > XLIB_COORD_MAX ||
+		 height > XLIB_COORD_MAX ||
+		 width  <= 0 ||
+		 height <= 0))
+	return cairo_image_surface_create (_cairo_format_from_content (content),
+					   width, height);
+
+    if ((other->connection->flags & CAIRO_XCB_HAS_RENDER) == 0)
+	return _cairo_xcb_surface_create_similar_image (other,
+							_cairo_format_from_content (content),
+							width, height);
+
+    connection = other->connection;
+    status = _cairo_xcb_connection_acquire (connection);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (content == other->base.content) {
+	pixmap = _cairo_xcb_connection_create_pixmap (connection,
+						      other->depth,
+						      other->drawable,
+						      width, height);
+
+	surface = (cairo_xcb_surface_t *)
+	    _cairo_xcb_surface_create_internal (other->screen,
+						pixmap, TRUE,
+						other->pixman_format,
+						other->xrender_format,
+						width, height);
+    } else {
+	cairo_format_t format;
+	pixman_format_code_t pixman_format;
+
+	/* XXX find a compatible xrender format */
+	switch (content) {
+	case CAIRO_CONTENT_ALPHA:
+	    pixman_format = PIXMAN_a8;
+	    format = CAIRO_FORMAT_A8;
+	    break;
+	case CAIRO_CONTENT_COLOR:
+	    pixman_format = PIXMAN_x8r8g8b8;
+	    format = CAIRO_FORMAT_RGB24;
+	    break;
+	default:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_CONTENT_COLOR_ALPHA:
+	    pixman_format = PIXMAN_a8r8g8b8;
+	    format = CAIRO_FORMAT_ARGB32;
+	    break;
+	}
+
+	pixmap = _cairo_xcb_connection_create_pixmap (connection,
+						      PIXMAN_FORMAT_DEPTH (pixman_format),
+						      other->drawable,
+						      width, height);
+
+	surface = (cairo_xcb_surface_t *)
+	    _cairo_xcb_surface_create_internal (other->screen,
+						pixmap, TRUE,
+						pixman_format,
+						connection->standard_formats[format],
+						width, height);
+    }
+
+    if (unlikely (surface->base.status))
+	_cairo_xcb_connection_free_pixmap (connection, pixmap);
+
+    _cairo_xcb_connection_release (connection);
+
+    return &surface->base;
+}
+
+cairo_surface_t *
+_cairo_xcb_surface_create_similar_image (void			*abstract_other,
+					 cairo_format_t		 format,
+					 int			 width,
+					 int			 height)
+{
+    cairo_xcb_surface_t *other = abstract_other;
+    cairo_xcb_connection_t *connection = other->connection;
+
+    cairo_xcb_shm_info_t *shm_info;
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+    pixman_format_code_t pixman_format;
+
+    if (unlikely(width  > XLIB_COORD_MAX ||
+		 height > XLIB_COORD_MAX ||
+		 width  <= 0 ||
+		 height <= 0))
+	return NULL;
+
+    pixman_format = _cairo_format_to_pixman_format_code (format);
+
+    status = _cairo_xcb_shm_image_create (connection, pixman_format,
+					  width, height, &image,
+					  &shm_info);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (! image->base.is_clear) {
+	memset (image->data, 0, image->stride * image->height);
+	image->base.is_clear = TRUE;
+    }
+
+    return &image->base;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_finish (void *abstract_surface)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (surface->fallback != NULL) {
+	cairo_surface_finish (&surface->fallback->base);
+	cairo_surface_destroy (&surface->fallback->base);
+    }
+    _cairo_boxes_fini (&surface->fallback_damage);
+
+    cairo_list_del (&surface->link);
+
+    status = _cairo_xcb_connection_acquire (surface->connection);
+    if (status == CAIRO_STATUS_SUCCESS) {
+	if (surface->picture != XCB_NONE) {
+	    _cairo_xcb_connection_render_free_picture (surface->connection,
+						       surface->picture);
+	}
+
+	if (surface->owns_pixmap)
+	    _cairo_xcb_connection_free_pixmap (surface->connection, surface->drawable);
+	_cairo_xcb_connection_release (surface->connection);
+    }
+
+    _cairo_xcb_connection_destroy (surface->connection);
+
+    return status;
+}
+
+static void
+_destroy_image (pixman_image_t *image, void *data)
+{
+    free (data);
+}
+
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+static cairo_surface_t *
+_cairo_xcb_surface_create_shm_image (cairo_xcb_connection_t *connection,
+				     pixman_format_code_t pixman_format,
+				     int width, int height,
+				     cairo_bool_t might_reuse,
+				     cairo_xcb_shm_info_t **shm_info_out)
+{
+    cairo_surface_t *image;
+    cairo_xcb_shm_info_t *shm_info;
+    cairo_int_status_t status;
+    size_t stride;
+
+    *shm_info_out = NULL;
+
+    stride = CAIRO_STRIDE_FOR_WIDTH_BPP (width,
+					 PIXMAN_FORMAT_BPP (pixman_format));
+    status = _cairo_xcb_connection_allocate_shm_info (connection,
+						      stride * height,
+						      might_reuse,
+						      &shm_info);
+    if (unlikely (status)) {
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    return NULL;
+
+	return _cairo_surface_create_in_error (status);
+    }
+
+    image = _cairo_image_surface_create_with_pixman_format (shm_info->mem,
+							    pixman_format,
+							    width, height,
+							    stride);
+    if (unlikely (image->status)) {
+	_cairo_xcb_shm_info_destroy (shm_info);
+	return image;
+    }
+
+    status = _cairo_user_data_array_set_data (&image->user_data,
+					      (const cairo_user_data_key_t *) connection,
+					      shm_info,
+					      (cairo_destroy_func_t) _cairo_xcb_shm_info_destroy);
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	_cairo_xcb_shm_info_destroy (shm_info);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    *shm_info_out = shm_info;
+    return image;
+}
+#endif
+
+static cairo_surface_t *
+_get_shm_image (cairo_xcb_surface_t *surface,
+		int x, int y,
+		int width, int height)
+{
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    cairo_xcb_shm_info_t *shm_info;
+    cairo_surface_t *image;
+    cairo_status_t status;
+
+    if ((surface->connection->flags & CAIRO_XCB_HAS_SHM) == 0)
+	return NULL;
+
+    image = _cairo_xcb_surface_create_shm_image (surface->connection,
+						 surface->pixman_format,
+						 width, height,
+						 TRUE,
+						 &shm_info);
+    if (unlikely (image == NULL || image->status))
+	goto done;
+
+    status = _cairo_xcb_connection_shm_get_image (surface->connection,
+						  surface->drawable,
+						  x, y,
+						  width, height,
+						  shm_info->shm,
+						  shm_info->offset);
+    if (unlikely (status)) {
+	cairo_surface_destroy (image);
+	image = _cairo_surface_create_in_error (status);
+    }
+
+done:
+    return image;
+#else
+    return NULL;
+#endif
+}
+
+static cairo_surface_t *
+_get_image (cairo_xcb_surface_t		 *surface,
+	    cairo_bool_t		  use_shm,
+	    int x, int y,
+	    int width, int height)
+{
+    cairo_surface_t *image;
+    cairo_xcb_connection_t *connection;
+    xcb_get_image_reply_t *reply;
+    cairo_int_status_t status;
+
+    assert (surface->fallback == NULL);
+    assert (x >= 0);
+    assert (y >= 0);
+    assert (x + width <= surface->width);
+    assert (y + height <= surface->height);
+
+    if (surface->deferred_clear) {
+	image =
+	    _cairo_image_surface_create_with_pixman_format (NULL,
+							    surface->pixman_format,
+							    width, height,
+							    0);
+	if (surface->deferred_clear_color.alpha_short > 0x00ff) {
+	    cairo_solid_pattern_t solid;
+
+	    _cairo_pattern_init_solid (&solid, &surface->deferred_clear_color);
+	    status = _cairo_surface_paint (image,
+					   CAIRO_OPERATOR_SOURCE,
+					   &solid.base,
+					   NULL);
+	    if (unlikely (status)) {
+		cairo_surface_destroy (image);
+		image = _cairo_surface_create_in_error (status);
+	    }
+	}
+	return image;
+    }
+
+    connection = surface->connection;
+
+    status = _cairo_xcb_connection_acquire (connection);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (use_shm) {
+	image = _get_shm_image (surface, x, y, width, height);
+	if (image) {
+	    if (image->status == CAIRO_STATUS_SUCCESS) {
+		_cairo_xcb_connection_release (connection);
+		return image;
+	    }
+	    cairo_surface_destroy (image);
+	}
+    }
+
+    reply =_cairo_xcb_connection_get_image (connection,
+					    surface->drawable,
+					    x, y,
+					    width, height);
+
+    if (reply == NULL && ! surface->owns_pixmap) {
+	/* xcb_get_image_t from a window is dangerous because it can
+	 * produce errors if the window is unmapped or partially
+	 * outside the screen. We could check for errors and
+	 * retry, but to keep things simple, we just create a
+	 * temporary pixmap
+	 *
+	 * If we hit this fallback too often, we should remember so and
+	 * skip the round-trip from the above GetImage request,
+	 * similar to what cairo-xlib does.
+	 */
+	xcb_pixmap_t pixmap;
+	xcb_gcontext_t gc;
+
+	gc = _cairo_xcb_screen_get_gc (surface->screen,
+				       surface->drawable,
+				       surface->depth);
+	pixmap = _cairo_xcb_connection_create_pixmap (connection,
+						      surface->depth,
+						      surface->drawable,
+						      width, height);
+
+	/* XXX IncludeInferiors? */
+	_cairo_xcb_connection_copy_area (connection,
+					 surface->drawable,
+					 pixmap, gc,
+					 x, y,
+					 0, 0,
+					 width, height);
+
+	_cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
+
+	reply = _cairo_xcb_connection_get_image (connection,
+						 pixmap,
+						 0, 0,
+						 width, height);
+	_cairo_xcb_connection_free_pixmap (connection, pixmap);
+    }
+
+    if (unlikely (reply == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL;
+    }
+
+    /* XXX byte swap */
+    /* XXX format conversion */
+    assert (reply->depth == surface->depth);
+
+    image = _cairo_image_surface_create_with_pixman_format
+	(xcb_get_image_data (reply),
+	 surface->pixman_format,
+	 width, height,
+	 CAIRO_STRIDE_FOR_WIDTH_BPP (width,
+				     PIXMAN_FORMAT_BPP (surface->pixman_format)));
+    status = image->status;
+    if (unlikely (status)) {
+	free (reply);
+	goto FAIL;
+    }
+
+    /* XXX */
+    pixman_image_set_destroy_function (((cairo_image_surface_t *)image)->pixman_image, _destroy_image, reply);
+
+    _cairo_xcb_connection_release (connection);
+
+    return image;
+
+FAIL:
+    _cairo_xcb_connection_release (connection);
+    return _cairo_surface_create_in_error (status);
+}
+
+static cairo_surface_t *
+_cairo_xcb_surface_source (void *abstract_surface,
+			   cairo_rectangle_int_t *extents)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+
+    if (extents) {
+	extents->x = extents->y = 0;
+	extents->width  = surface->width;
+	extents->height = surface->height;
+    }
+
+    return &surface->base;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_acquire_source_image (void *abstract_surface,
+					 cairo_image_surface_t **image_out,
+					 void **image_extra)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+    cairo_surface_t *image;
+
+    if (surface->fallback != NULL) {
+	image = cairo_surface_reference (&surface->fallback->base);
+	goto DONE;
+    }
+
+    image = _cairo_surface_has_snapshot (&surface->base,
+					 &_cairo_image_surface_backend);
+    if (image != NULL) {
+	image = cairo_surface_reference (image);
+	goto DONE;
+    }
+
+    image = _get_image (surface, FALSE, 0, 0, surface->width, surface->height);
+    if (unlikely (image->status))
+	return image->status;
+
+    _cairo_surface_attach_snapshot (&surface->base, image, NULL);
+
+DONE:
+    *image_out = (cairo_image_surface_t *) image;
+    *image_extra = NULL;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_xcb_surface_release_source_image (void *abstract_surface,
+					 cairo_image_surface_t *image,
+					 void *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+cairo_bool_t
+_cairo_xcb_surface_get_extents (void *abstract_surface,
+				cairo_rectangle_int_t *extents)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+
+    extents->x = extents->y = 0;
+    extents->width  = surface->width;
+    extents->height = surface->height;
+    return TRUE;
+}
+
+static void
+_cairo_xcb_surface_get_font_options (void *abstract_surface,
+				     cairo_font_options_t *options)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+
+    *options = *_cairo_xcb_screen_get_font_options (surface->screen);
+}
+
+static cairo_status_t
+_put_shm_image (cairo_xcb_surface_t    *surface,
+		xcb_gcontext_t		gc,
+		cairo_image_surface_t  *image)
+{
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    cairo_xcb_shm_info_t *shm_info;
+
+    shm_info = _cairo_user_data_array_get_data (&image->base.user_data,
+						(const cairo_user_data_key_t *) surface->connection);
+    if (shm_info == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_xcb_connection_shm_put_image (surface->connection,
+					 surface->drawable,
+					 gc,
+					 surface->width, surface->height,
+					 0, 0,
+					 image->width, image->height,
+					 image->base.device_transform_inverse.x0,
+					 image->base.device_transform_inverse.y0,
+					 image->depth,
+					 shm_info->shm,
+					 shm_info->offset);
+
+    return CAIRO_STATUS_SUCCESS;
+#else
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+#endif
+}
+
+static cairo_status_t
+_put_image (cairo_xcb_surface_t    *surface,
+	    cairo_image_surface_t  *image)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+
+    /* XXX track damaged region? */
+
+    status = _cairo_xcb_connection_acquire (surface->connection);
+    if (unlikely (status))
+	return status;
+
+    if (image->pixman_format == surface->pixman_format) {
+	xcb_gcontext_t gc;
+
+	assert (image->depth == surface->depth);
+	assert (image->stride == (int) CAIRO_STRIDE_FOR_WIDTH_BPP (image->width, PIXMAN_FORMAT_BPP (image->pixman_format)));
+
+	gc = _cairo_xcb_screen_get_gc (surface->screen,
+				       surface->drawable,
+				       surface->depth);
+
+	status = _put_shm_image (surface, gc, image);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	    _cairo_xcb_connection_put_image (surface->connection,
+					     surface->drawable, gc,
+					     image->width, image->height,
+					     image->base.device_transform_inverse.x0,
+					     image->base.device_transform_inverse.y0,
+					     image->depth,
+					     image->stride,
+					     image->data);
+	    status = CAIRO_STATUS_SUCCESS;
+	}
+
+	_cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
+    } else {
+	ASSERT_NOT_REACHED;
+    }
+
+    _cairo_xcb_connection_release (surface->connection);
+    return status;
+}
+
+static cairo_int_status_t
+_put_shm_image_boxes (cairo_xcb_surface_t    *surface,
+		      cairo_image_surface_t  *image,
+		      xcb_gcontext_t gc,
+		      cairo_boxes_t *boxes)
+{
+#if CAIRO_HAS_XCB_SHM_FUNCTIONS
+    cairo_xcb_shm_info_t *shm_info;
+
+    shm_info = _cairo_user_data_array_get_data (&image->base.user_data,
+						(const cairo_user_data_key_t *) surface->connection);
+    if (shm_info != NULL) {
+	struct _cairo_boxes_chunk *chunk;
+
+	for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	    int i;
+
+	    for (i = 0; i < chunk->count; i++) {
+		cairo_box_t *b = &chunk->base[i];
+		int x = _cairo_fixed_integer_part (b->p1.x);
+		int y = _cairo_fixed_integer_part (b->p1.y);
+		int width = _cairo_fixed_integer_part (b->p2.x - b->p1.x);
+		int height = _cairo_fixed_integer_part (b->p2.y - b->p1.y);
+
+		_cairo_xcb_connection_shm_put_image (surface->connection,
+						     surface->drawable,
+						     gc,
+						     surface->width, surface->height,
+						     x, y,
+						     width, height,
+						     x, y,
+						     image->depth,
+						     shm_info->shm,
+						     shm_info->offset);
+	    }
+	}
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+#endif
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_status_t
+_put_image_boxes (cairo_xcb_surface_t    *surface,
+		  cairo_image_surface_t  *image,
+		  cairo_boxes_t *boxes)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+    xcb_gcontext_t gc;
+
+    if (boxes->num_boxes == 0)
+	    return CAIRO_STATUS_SUCCESS;
+
+    /* XXX track damaged region? */
+
+    status = _cairo_xcb_connection_acquire (surface->connection);
+    if (unlikely (status))
+	return status;
+
+    assert (image->pixman_format == surface->pixman_format);
+    assert (image->depth == surface->depth);
+    assert (image->stride == (int) CAIRO_STRIDE_FOR_WIDTH_BPP (image->width, PIXMAN_FORMAT_BPP (image->pixman_format)));
+
+    gc = _cairo_xcb_screen_get_gc (surface->screen,
+				   surface->drawable,
+				   surface->depth);
+
+    status = _put_shm_image_boxes (surface, image, gc, boxes);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	    struct _cairo_boxes_chunk *chunk;
+
+	    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+		    int i;
+
+		    for (i = 0; i < chunk->count; i++) {
+			    cairo_box_t *b = &chunk->base[i];
+			    int x = _cairo_fixed_integer_part (b->p1.x);
+			    int y = _cairo_fixed_integer_part (b->p1.y);
+			    int width = _cairo_fixed_integer_part (b->p2.x - b->p1.x);
+			    int height = _cairo_fixed_integer_part (b->p2.y - b->p1.y);
+			    _cairo_xcb_connection_put_subimage (surface->connection,
+								surface->drawable, gc,
+								x, y,
+								width, height,
+								PIXMAN_FORMAT_BPP (image->pixman_format) / 8,
+								image->stride,
+								x, y,
+								image->depth,
+								image->data);
+
+		    }
+	    }
+	    status = CAIRO_STATUS_SUCCESS;
+    }
+
+    _cairo_xcb_screen_put_gc (surface->screen, surface->depth, gc);
+    _cairo_xcb_connection_release (surface->connection);
+    return status;
+}
+
+static cairo_status_t
+_cairo_xcb_surface_flush (void *abstract_surface,
+			  unsigned flags)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (likely (surface->fallback == NULL)) {
+	status = CAIRO_STATUS_SUCCESS;
+	if (! surface->base.finished && surface->deferred_clear)
+	    status = _cairo_xcb_surface_clear (surface);
+
+	return status;
+    }
+
+    status = surface->base.status;
+    if (status == CAIRO_STATUS_SUCCESS &&
+	(! surface->base._finishing || ! surface->owns_pixmap)) {
+	status = cairo_surface_status (&surface->fallback->base);
+
+	if (status == CAIRO_STATUS_SUCCESS)
+		status = _cairo_bentley_ottmann_tessellate_boxes (&surface->fallback_damage,
+								  CAIRO_FILL_RULE_WINDING,
+								  &surface->fallback_damage);
+
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = _put_image_boxes (surface,
+				       surface->fallback,
+				       &surface->fallback_damage);
+
+	if (status == CAIRO_STATUS_SUCCESS && ! surface->base._finishing) {
+	    _cairo_surface_attach_snapshot (&surface->base,
+					    &surface->fallback->base,
+					    cairo_surface_finish);
+	}
+    }
+
+    _cairo_boxes_clear (&surface->fallback_damage);
+    cairo_surface_destroy (&surface->fallback->base);
+    surface->fallback = NULL;
+
+    return status;
+}
+
+static cairo_image_surface_t *
+_cairo_xcb_surface_map_to_image (void *abstract_surface,
+				 const cairo_rectangle_int_t *extents)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+    cairo_surface_t *image;
+    cairo_status_t status;
+
+    if (surface->fallback)
+	return _cairo_surface_map_to_image (&surface->fallback->base, extents);
+
+    image = _get_image (surface, TRUE,
+			extents->x, extents->y,
+			extents->width, extents->height);
+    status = cairo_surface_status (image);
+    if (unlikely (status)) {
+	cairo_surface_destroy(image);
+	return _cairo_image_surface_create_in_error (status);
+    }
+
+    /* Do we have a deferred clear and this image surface does NOT cover the
+     * whole xcb surface? Have to apply the clear in that case, else
+     * uploading the image will handle the problem for us.
+     */
+    if (surface->deferred_clear &&
+	! (extents->width == surface->width &&
+	   extents->height == surface->height)) {
+	status = _cairo_xcb_surface_clear (surface);
+	if (unlikely (status)) {
+	    cairo_surface_destroy(image);
+	    return _cairo_image_surface_create_in_error (status);
+	}
+    }
+    surface->deferred_clear = FALSE;
+
+    cairo_surface_set_device_offset (image, -extents->x, -extents->y);
+    return (cairo_image_surface_t *) image;
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_unmap (void *abstract_surface,
+			  cairo_image_surface_t *image)
+{
+    cairo_xcb_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    if (surface->fallback)
+	return _cairo_surface_unmap_image (&surface->fallback->base, image);
+
+    status = _put_image (abstract_surface, image);
+
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return status;
+}
+
+static cairo_surface_t *
+_cairo_xcb_surface_fallback (cairo_xcb_surface_t *surface,
+			     cairo_composite_rectangles_t *composite)
+{
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_add_to_damage (composite,
+							&surface->fallback_damage);
+    if (unlikely (status))
+	    return _cairo_surface_create_in_error (status);
+
+    if (surface->fallback)
+	return &surface->fallback->base;
+
+    image = (cairo_image_surface_t *)
+	    _get_image (surface, TRUE, 0, 0, surface->width, surface->height);
+
+    if (image->base.status != CAIRO_STATUS_SUCCESS)
+	return &image->base;
+
+    /* If there was a deferred clear, _get_image applied it */
+    surface->deferred_clear = FALSE;
+
+    surface->fallback = image;
+
+    return &surface->fallback->base;
+}
+
+static cairo_int_status_t
+_cairo_xcb_fallback_compositor_paint (const cairo_compositor_t     *compositor,
+				      cairo_composite_rectangles_t *extents)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) extents->surface;
+    cairo_surface_t *fallback = _cairo_xcb_surface_fallback (surface, extents);
+
+    return _cairo_surface_paint (fallback, extents->op,
+				 &extents->source_pattern.base,
+				 extents->clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_fallback_compositor_mask (const cairo_compositor_t     *compositor,
+				     cairo_composite_rectangles_t *extents)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) extents->surface;
+    cairo_surface_t *fallback = _cairo_xcb_surface_fallback (surface, extents);
+
+    return _cairo_surface_mask (fallback, extents->op,
+				 &extents->source_pattern.base,
+				 &extents->mask_pattern.base,
+				 extents->clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_fallback_compositor_stroke (const cairo_compositor_t     *compositor,
+				       cairo_composite_rectangles_t *extents,
+				       const cairo_path_fixed_t     *path,
+				       const cairo_stroke_style_t   *style,
+				       const cairo_matrix_t         *ctm,
+				       const cairo_matrix_t         *ctm_inverse,
+				       double                        tolerance,
+				       cairo_antialias_t             antialias)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) extents->surface;
+    cairo_surface_t *fallback = _cairo_xcb_surface_fallback (surface, extents);
+
+    return _cairo_surface_stroke (fallback, extents->op,
+				  &extents->source_pattern.base,
+				  path, style, ctm, ctm_inverse,
+				  tolerance, antialias,
+				  extents->clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_fallback_compositor_fill (const cairo_compositor_t     *compositor,
+				     cairo_composite_rectangles_t *extents,
+				     const cairo_path_fixed_t     *path,
+				     cairo_fill_rule_t             fill_rule,
+				     double                        tolerance,
+				     cairo_antialias_t             antialias)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) extents->surface;
+    cairo_surface_t *fallback = _cairo_xcb_surface_fallback (surface, extents);
+
+    return _cairo_surface_fill (fallback, extents->op,
+				&extents->source_pattern.base,
+				path, fill_rule, tolerance,
+				antialias, extents->clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_fallback_compositor_glyphs (const cairo_compositor_t     *compositor,
+				       cairo_composite_rectangles_t *extents,
+				       cairo_scaled_font_t          *scaled_font,
+				       cairo_glyph_t                *glyphs,
+				       int                           num_glyphs,
+				       cairo_bool_t                  overlap)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t *) extents->surface;
+    cairo_surface_t *fallback = _cairo_xcb_surface_fallback (surface, extents);
+
+    return _cairo_surface_show_text_glyphs (fallback, extents->op,
+					    &extents->source_pattern.base,
+					    NULL, 0, glyphs, num_glyphs,
+					    NULL, 0, 0,
+					    scaled_font, extents->clip);
+}
+
+static const cairo_compositor_t _cairo_xcb_fallback_compositor = {
+    &__cairo_no_compositor,
+
+    _cairo_xcb_fallback_compositor_paint,
+    _cairo_xcb_fallback_compositor_mask,
+    _cairo_xcb_fallback_compositor_stroke,
+    _cairo_xcb_fallback_compositor_fill,
+    _cairo_xcb_fallback_compositor_glyphs,
+};
+
+static const cairo_compositor_t _cairo_xcb_render_compositor = {
+    &_cairo_xcb_fallback_compositor,
+
+    _cairo_xcb_render_compositor_paint,
+    _cairo_xcb_render_compositor_mask,
+    _cairo_xcb_render_compositor_stroke,
+    _cairo_xcb_render_compositor_fill,
+    _cairo_xcb_render_compositor_glyphs,
+};
+
+static inline const cairo_compositor_t *
+get_compositor (cairo_surface_t **s)
+{
+    cairo_xcb_surface_t *surface = (cairo_xcb_surface_t * )*s;
+    if (surface->fallback) {
+	*s = &surface->fallback->base;
+	return ((cairo_image_surface_t *) *s)->compositor;
+    }
+
+    return &_cairo_xcb_render_compositor;
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_paint (void			*abstract_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  const cairo_clip_t	*clip)
+{
+    cairo_surface_t *surface = abstract_surface;
+    const cairo_compositor_t *compositor = get_compositor (&surface);
+    return _cairo_compositor_paint (compositor, surface, op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_mask (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_pattern_t	*mask,
+			 const cairo_clip_t	*clip)
+{
+    cairo_surface_t *surface = abstract_surface;
+    const cairo_compositor_t *compositor = get_compositor (&surface);
+    return _cairo_compositor_mask (compositor, surface, op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_stroke (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_path_fixed_t	*path,
+			   const cairo_stroke_style_t	*style,
+			   const cairo_matrix_t		*ctm,
+			   const cairo_matrix_t		*ctm_inverse,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   const cairo_clip_t		*clip)
+{
+    cairo_surface_t *surface = abstract_surface;
+    const cairo_compositor_t *compositor = get_compositor (&surface);
+    return _cairo_compositor_stroke (compositor, surface, op, source,
+				     path, style, ctm, ctm_inverse,
+				     tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_fill (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_path_fixed_t*path,
+			 cairo_fill_rule_t	 fill_rule,
+			 double			 tolerance,
+			 cairo_antialias_t	 antialias,
+			 const cairo_clip_t	*clip)
+{
+    cairo_surface_t *surface = abstract_surface;
+    const cairo_compositor_t *compositor = get_compositor (&surface);
+    return _cairo_compositor_fill (compositor, surface, op,
+				   source, path, fill_rule,
+				   tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_xcb_surface_glyphs (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   cairo_glyph_t		*glyphs,
+			   int				 num_glyphs,
+			   cairo_scaled_font_t		*scaled_font,
+			   const cairo_clip_t		*clip)
+{
+    cairo_surface_t *surface = abstract_surface;
+    const cairo_compositor_t *compositor = get_compositor (&surface);
+    return _cairo_compositor_glyphs (compositor, surface, op,
+				     source, glyphs, num_glyphs,
+				     scaled_font, clip);
+}
+
+const cairo_surface_backend_t _cairo_xcb_surface_backend = {
+    CAIRO_SURFACE_TYPE_XCB,
+    _cairo_xcb_surface_finish,
+    _cairo_default_context_create,
+
+    _cairo_xcb_surface_create_similar,
+    _cairo_xcb_surface_create_similar_image,
+    _cairo_xcb_surface_map_to_image,
+    _cairo_xcb_surface_unmap,
+
+    _cairo_xcb_surface_source,
+    _cairo_xcb_surface_acquire_source_image,
+    _cairo_xcb_surface_release_source_image,
+    NULL, /* snapshot */
+
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_xcb_surface_get_extents,
+    _cairo_xcb_surface_get_font_options,
+
+    _cairo_xcb_surface_flush,
+    NULL,
+
+    _cairo_xcb_surface_paint,
+    _cairo_xcb_surface_mask,
+    _cairo_xcb_surface_stroke,
+    _cairo_xcb_surface_fill,
+    NULL, /* fill-stroke */
+    _cairo_xcb_surface_glyphs,
+};
+
+cairo_surface_t *
+_cairo_xcb_surface_create_internal (cairo_xcb_screen_t		*screen,
+				    xcb_drawable_t		 drawable,
+				    cairo_bool_t		 owns_pixmap,
+				    pixman_format_code_t	 pixman_format,
+				    xcb_render_pictformat_t	 xrender_format,
+				    int				 width,
+				    int				 height)
+{
+    cairo_xcb_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_xcb_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_xcb_surface_backend,
+			 &screen->connection->device,
+			 _cairo_content_from_pixman_format (pixman_format),
+			 FALSE); /* is_vector */
+
+    surface->connection = _cairo_xcb_connection_reference (screen->connection);
+    surface->screen = screen;
+    cairo_list_add (&surface->link, &screen->surfaces);
+
+    surface->drawable = drawable;
+    surface->owns_pixmap = owns_pixmap;
+
+    surface->deferred_clear = FALSE;
+    surface->deferred_clear_color = *CAIRO_COLOR_TRANSPARENT;
+
+    surface->width  = width;
+    surface->height = height;
+    surface->depth  = PIXMAN_FORMAT_DEPTH (pixman_format);
+
+    surface->picture = XCB_NONE;
+    if (screen->connection->force_precision != -1)
+	surface->precision = screen->connection->force_precision;
+    else
+	surface->precision = XCB_RENDER_POLY_MODE_IMPRECISE;
+
+    surface->pixman_format = pixman_format;
+    surface->xrender_format = xrender_format;
+
+    surface->fallback = NULL;
+    _cairo_boxes_init (&surface->fallback_damage);
+
+    return &surface->base;
+}
+
+static xcb_screen_t *
+_cairo_xcb_screen_from_visual (xcb_connection_t *connection,
+			       xcb_visualtype_t *visual,
+			       int *depth)
+{
+    xcb_depth_iterator_t d;
+    xcb_screen_iterator_t s;
+
+    s = xcb_setup_roots_iterator (xcb_get_setup (connection));
+    for (; s.rem; xcb_screen_next (&s)) {
+	if (s.data->root_visual == visual->visual_id) {
+	    *depth = s.data->root_depth;
+	    return s.data;
+	}
+
+	d = xcb_screen_allowed_depths_iterator(s.data);
+	for (; d.rem; xcb_depth_next (&d)) {
+	    xcb_visualtype_iterator_t v = xcb_depth_visuals_iterator (d.data);
+
+	    for (; v.rem; xcb_visualtype_next (&v)) {
+		if (v.data->visual_id == visual->visual_id) {
+		    *depth = d.data->depth;
+		    return s.data;
+		}
+	    }
+	}
+    }
+
+    return NULL;
+}
+
+/**
+ * cairo_xcb_surface_create:
+ * @connection: an XCB connection
+ * @drawable: an XCB drawable
+ * @visual: the visual to use for drawing to @drawable. The depth
+ *          of the visual must match the depth of the drawable.
+ *          Currently, only TrueColor visuals are fully supported.
+ * @width: the current width of @drawable
+ * @height: the current height of @drawable
+ *
+ * Creates an XCB surface that draws to the given drawable.
+ * The way that colors are represented in the drawable is specified
+ * by the provided visual.
+ *
+ * Note: If @drawable is a Window, then the function
+ * cairo_xcb_surface_set_size() must be called whenever the size of the
+ * window changes.
+ *
+ * When @drawable is a Window containing child windows then drawing to
+ * the created surface will be clipped by those child windows.  When
+ * the created surface is used as a source, the contents of the
+ * children will be included.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_xcb_surface_create (xcb_connection_t  *connection,
+			  xcb_drawable_t     drawable,
+			  xcb_visualtype_t  *visual,
+			  int		     width,
+			  int		     height)
+{
+    cairo_xcb_screen_t *screen;
+    xcb_screen_t *xcb_screen;
+    cairo_format_masks_t image_masks;
+    pixman_format_code_t pixman_format;
+    xcb_render_pictformat_t xrender_format;
+    int depth;
+
+    if (xcb_connection_has_error (connection))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_WRITE_ERROR));
+
+    if (unlikely (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    if (unlikely (width <= 0 || height <= 0))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    xcb_screen = _cairo_xcb_screen_from_visual (connection, visual, &depth);
+    if (unlikely (xcb_screen == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_VISUAL));
+
+    image_masks.alpha_mask = 0;
+    image_masks.red_mask   = visual->red_mask;
+    image_masks.green_mask = visual->green_mask;
+    image_masks.blue_mask  = visual->blue_mask;
+    if (depth == 32) /* XXX visuals have no alpha! */
+	image_masks.alpha_mask =
+	    0xffffffff & ~(visual->red_mask | visual->green_mask | visual->blue_mask);
+    if (depth > 16)
+	image_masks.bpp = 32;
+    else if (depth > 8)
+	image_masks.bpp = 16;
+    else if (depth > 1)
+	image_masks.bpp = 8;
+    else
+	image_masks.bpp = 1;
+
+    if (! _pixman_format_from_masks (&image_masks, &pixman_format))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    screen = _cairo_xcb_screen_get (connection, xcb_screen);
+    if (unlikely (screen == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    xrender_format =
+	_cairo_xcb_connection_get_xrender_format_for_visual (screen->connection,
+							     visual->visual_id);
+
+    return _cairo_xcb_surface_create_internal (screen, drawable, FALSE,
+					       pixman_format,
+					       xrender_format,
+					       width, height);
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_surface_create);
+#endif
+
+/**
+ * cairo_xcb_surface_create_for_bitmap:
+ * @connection: an XCB connection
+ * @screen: the XCB screen associated with @bitmap
+ * @bitmap: an XCB drawable (a Pixmap with depth 1)
+ * @width: the current width of @bitmap
+ * @height: the current height of @bitmap
+ *
+ * Creates an XCB surface that draws to the given bitmap.
+ * This will be drawn to as a %CAIRO_FORMAT_A1 object.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_xcb_surface_create_for_bitmap (xcb_connection_t	*connection,
+				     xcb_screen_t	*screen,
+				     xcb_pixmap_t	 bitmap,
+				     int		 width,
+				     int		 height)
+{
+    cairo_xcb_screen_t *cairo_xcb_screen;
+
+    if (xcb_connection_has_error (connection))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_WRITE_ERROR));
+
+    if (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    if (unlikely (width <= 0 || height <= 0))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    cairo_xcb_screen = _cairo_xcb_screen_get (connection, screen);
+    if (unlikely (cairo_xcb_screen == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    return _cairo_xcb_surface_create_internal (cairo_xcb_screen, bitmap, FALSE,
+					       PIXMAN_a1,
+					       cairo_xcb_screen->connection->standard_formats[CAIRO_FORMAT_A1],
+					       width, height);
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_surface_create_for_bitmap);
+#endif
+
+/**
+ * cairo_xcb_surface_create_with_xrender_format:
+ * @connection: an XCB connection
+ * @drawable: an XCB drawable
+ * @screen: the XCB screen associated with @drawable
+ * @format: the picture format to use for drawing to @drawable. The
+ *          depth of @format mush match the depth of the drawable.
+ * @width: the current width of @drawable
+ * @height: the current height of @drawable
+ *
+ * Creates an XCB surface that draws to the given drawable.
+ * The way that colors are represented in the drawable is specified
+ * by the provided picture format.
+ *
+ * Note: If @drawable is a Window, then the function
+ * cairo_xcb_surface_set_size() must be called whenever the size of the
+ * window changes.
+ *
+ * When @drawable is a Window containing child windows then drawing to
+ * the created surface will be clipped by those child windows.  When
+ * the created surface is used as a source, the contents of the
+ * children will be included.
+ *
+ * Return value: a pointer to the newly created surface. The caller
+ * owns the surface and should call cairo_surface_destroy() when done
+ * with it.
+ *
+ * This function always returns a valid pointer, but it will return a
+ * pointer to a "nil" surface if an error such as out of memory
+ * occurs. You can use cairo_surface_status() to check for this.
+ *
+ * Since: 1.12
+ **/
+cairo_surface_t *
+cairo_xcb_surface_create_with_xrender_format (xcb_connection_t	    *connection,
+					      xcb_screen_t	    *screen,
+					      xcb_drawable_t	     drawable,
+					      xcb_render_pictforminfo_t *format,
+					      int		     width,
+					      int		     height)
+{
+    cairo_xcb_screen_t *cairo_xcb_screen;
+    cairo_format_masks_t image_masks;
+    pixman_format_code_t pixman_format;
+
+    if (xcb_connection_has_error (connection))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_WRITE_ERROR));
+
+    if (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    if (unlikely (width <= 0 || height <= 0))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    image_masks.alpha_mask =
+	(unsigned long) format->direct.alpha_mask << format->direct.alpha_shift;
+    image_masks.red_mask =
+	(unsigned long) format->direct.red_mask << format->direct.red_shift;
+    image_masks.green_mask =
+	(unsigned long) format->direct.green_mask << format->direct.green_shift;
+    image_masks.blue_mask =
+	(unsigned long) format->direct.blue_mask << format->direct.blue_shift;
+#if 0
+    image_masks.bpp = format->depth;
+#else
+    if (format->depth > 16)
+	image_masks.bpp = 32;
+    else if (format->depth > 8)
+	image_masks.bpp = 16;
+    else if (format->depth > 1)
+	image_masks.bpp = 8;
+    else
+	image_masks.bpp = 1;
+#endif
+
+    if (! _pixman_format_from_masks (&image_masks, &pixman_format))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    cairo_xcb_screen = _cairo_xcb_screen_get (connection, screen);
+    if (unlikely (cairo_xcb_screen == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    return _cairo_xcb_surface_create_internal (cairo_xcb_screen,
+					       drawable,
+					       FALSE,
+					       pixman_format,
+					       format->id,
+					       width, height);
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_surface_create_with_xrender_format);
+#endif
+
+/* This does the necessary fixup when a surface's drawable or size changed. */
+static void
+_drawable_changed (cairo_xcb_surface_t *surface)
+{
+    _cairo_surface_set_error (&surface->base,
+	    _cairo_surface_begin_modification (&surface->base));
+    _cairo_boxes_clear (&surface->fallback_damage);
+    cairo_surface_destroy (&surface->fallback->base);
+
+    surface->deferred_clear = FALSE;
+    surface->fallback = NULL;
+}
+
+/**
+ * cairo_xcb_surface_set_size:
+ * @surface: a #cairo_surface_t for the XCB backend
+ * @width: the new width of the surface
+ * @height: the new height of the surface
+ *
+ * Informs cairo of the new size of the XCB drawable underlying the
+ * surface. For a surface created for a window (rather than a pixmap),
+ * this function must be called each time the size of the window
+ * changes. (For a subwindow, you are normally resizing the window
+ * yourself, but for a toplevel window, it is necessary to listen for
+ * ConfigureNotify events.)
+ *
+ * A pixmap can never change size, so it is never necessary to call
+ * this function on a surface created for a pixmap.
+ *
+ * If cairo_surface_flush() wasn't called, some pending operations
+ * might be discarded.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xcb_surface_set_size (cairo_surface_t *abstract_surface,
+			    int              width,
+			    int              height)
+{
+    cairo_xcb_surface_t *surface;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+
+    if ( !_cairo_surface_is_xcb(abstract_surface)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    if (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX || width <= 0 || height <= 0) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_INVALID_SIZE));
+	return;
+    }
+
+    surface = (cairo_xcb_surface_t *) abstract_surface;
+
+    _drawable_changed(surface);
+    surface->width  = width;
+    surface->height = height;
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_surface_set_size);
+#endif
+
+/**
+ * cairo_xcb_surface_set_drawable:
+ * @surface: a #cairo_surface_t for the XCB backend
+ * @drawable: the new drawable of the surface
+ * @width: the new width of the surface
+ * @height: the new height of the surface
+ *
+ * Informs cairo of the new drawable and size of the XCB drawable underlying the
+ * surface.
+ *
+ * If cairo_surface_flush() wasn't called, some pending operations
+ * might be discarded.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xcb_surface_set_drawable (cairo_surface_t *abstract_surface,
+				xcb_drawable_t  drawable,
+				int             width,
+				int             height)
+{
+    cairo_xcb_surface_t *surface;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+
+    if ( !_cairo_surface_is_xcb(abstract_surface)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    if (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX || width <= 0 || height <= 0) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_INVALID_SIZE));
+	return;
+    }
+
+    surface = (cairo_xcb_surface_t *) abstract_surface;
+
+    /* XXX: and what about this case? */
+    if (surface->owns_pixmap)
+	    return;
+
+    _drawable_changed (surface);
+
+    if (surface->drawable != drawable) {
+	    cairo_status_t status;
+	    status = _cairo_xcb_connection_acquire (surface->connection);
+	    if (unlikely (status))
+		    return;
+
+	    if (surface->picture != XCB_NONE) {
+		    _cairo_xcb_connection_render_free_picture (surface->connection,
+							       surface->picture);
+		    surface->picture = XCB_NONE;
+	    }
+
+	    _cairo_xcb_connection_release (surface->connection);
+
+	    surface->drawable = drawable;
+    }
+    surface->width  = width;
+    surface->height = height;
+}
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+slim_hidden_def (cairo_xcb_surface_set_drawable);
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-xcb.h b/libs/cairo-1.16.0/src/cairo-xcb.h
new file mode 100644
index 0000000..e321d84
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xcb.h
@@ -0,0 +1,116 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_XCB_H
+#define CAIRO_XCB_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_XCB_SURFACE
+
+#include <xcb/xcb.h>
+#include <xcb/render.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_xcb_surface_create (xcb_connection_t	*connection,
+			  xcb_drawable_t	 drawable,
+			  xcb_visualtype_t	*visual,
+			  int			 width,
+			  int			 height);
+
+cairo_public cairo_surface_t *
+cairo_xcb_surface_create_for_bitmap (xcb_connection_t	*connection,
+				     xcb_screen_t	*screen,
+				     xcb_pixmap_t	 bitmap,
+				     int		 width,
+				     int		 height);
+
+cairo_public cairo_surface_t *
+cairo_xcb_surface_create_with_xrender_format (xcb_connection_t			*connection,
+					      xcb_screen_t			*screen,
+					      xcb_drawable_t			 drawable,
+					      xcb_render_pictforminfo_t		*format,
+					      int				 width,
+					      int				 height);
+
+cairo_public void
+cairo_xcb_surface_set_size (cairo_surface_t *surface,
+			    int		     width,
+			    int		     height);
+
+cairo_public void
+cairo_xcb_surface_set_drawable (cairo_surface_t *surface,
+				xcb_drawable_t	drawable,
+				int		width,
+				int		height);
+
+cairo_public xcb_connection_t *
+cairo_xcb_device_get_connection (cairo_device_t *device);
+
+/* debug interface */
+
+cairo_public void
+cairo_xcb_device_debug_cap_xshm_version (cairo_device_t *device,
+                                         int major_version,
+                                         int minor_version);
+
+cairo_public void
+cairo_xcb_device_debug_cap_xrender_version (cairo_device_t *device,
+                                            int major_version,
+                                            int minor_version);
+
+/*
+ * @precision: -1 implies automatically choose based on antialiasing mode,
+ *            any other value overrides and sets the corresponding PolyMode.
+ */
+cairo_public void
+cairo_xcb_device_debug_set_precision (cairo_device_t *device,
+				      int precision);
+
+cairo_public int
+cairo_xcb_device_debug_get_precision (cairo_device_t *device);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_XCB_SURFACE */
+# error Cairo was not compiled with support for the xcb backend
+#endif /* CAIRO_HAS_XCB_SURFACE */
+
+#endif /* CAIRO_XCB_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-core-compositor.c b/libs/cairo-1.16.0/src/cairo-xlib-core-compositor.c
new file mode 100644
index 0000000..1392999
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-core-compositor.c
@@ -0,0 +1,653 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+/* The original X drawing API was very restrictive in what it could handle,
+ * pixel-aligned fill/blits are all that map into Cairo's drawing model.
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-surface-private.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-compositor-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-offset-private.h"
+
+/* the low-level interface */
+
+static cairo_int_status_t
+acquire (void *abstract_dst)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+    return _cairo_xlib_display_acquire (dst->base.device, &dst->display);
+}
+
+static cairo_int_status_t
+release (void *abstract_dst)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+
+    cairo_device_release (&dst->display->base);
+    dst->display = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct _fill_box {
+    Display *dpy;
+    Drawable drawable;
+    GC gc;
+    //cairo_surface_t *dither = NULL;
+};
+
+static cairo_bool_t fill_box (cairo_box_t *box, void *closure)
+{
+    struct _fill_box *data = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+
+    XFillRectangle (data->dpy, data->drawable, data->gc, x, y, width, height);
+    return TRUE;
+}
+
+static void
+_characterize_field (uint32_t mask, int *width, int *shift)
+{
+    *width = _cairo_popcount (mask);
+    /* The final '& 31' is to force a 0 mask to result in 0 shift. */
+    *shift = _cairo_popcount ((mask - 1) & ~mask) & 31;
+}
+
+static uint32_t
+color_to_pixel (cairo_xlib_surface_t    *dst,
+		const cairo_color_t     *color)
+{
+    uint32_t rgba = 0;
+    int width, shift;
+
+    _characterize_field (dst->a_mask, &width, &shift);
+    rgba |= color->alpha_short >> (16 - width) << shift;
+
+    _characterize_field (dst->r_mask, &width, &shift);
+    rgba |= color->red_short >> (16 - width) << shift;
+
+    _characterize_field (dst->g_mask, &width, &shift);
+    rgba |= color->green_short >> (16 - width) << shift;
+
+    _characterize_field (dst->b_mask, &width, &shift);
+    rgba |= color->blue_short >> (16 - width) << shift;
+
+    return rgba;
+}
+
+static cairo_int_status_t
+_fill_box_init (struct _fill_box *fb,
+		cairo_xlib_surface_t *dst,
+		const cairo_color_t *color)
+{
+    cairo_int_status_t status;
+
+    status = _cairo_xlib_surface_get_gc (dst->display, dst, &fb->gc);
+    if (unlikely (status))
+        return status;
+
+    fb->dpy = dst->display->display;
+    fb->drawable = dst->drawable;
+
+    if (dst->visual && dst->visual->class != TrueColor && 0) {
+#if 0
+	cairo_solid_pattern_t solid;
+	cairo_surface_attributes_t attrs;
+
+	_cairo_pattern_init_solid (&solid, color);
+	status = _cairo_pattern_acquire_surface (&solid.base, &dst->base,
+						 0, 0,
+						 ARRAY_LENGTH (dither_pattern[0]),
+						 ARRAY_LENGTH (dither_pattern),
+						 CAIRO_PATTERN_ACQUIRE_NONE,
+						 &dither,
+						 &attrs);
+	if (unlikely (status)) {
+	    _cairo_xlib_surface_put_gc (dst->display, dst, fb.gc);
+	    return status;
+	}
+
+	XSetTSOrigin (fb->dpy, fb->gc,
+		      - (dst->base.device_transform.x0 + attrs.x_offset),
+		      - (dst->base.device_transform.y0 + attrs.y_offset));
+	XSetTile (fb->dpy, fb->gc, ((cairo_xlib_surface_t *) dither)->drawable);
+#endif
+    } else {
+	XGCValues gcv;
+
+	gcv.foreground = color_to_pixel (dst, color);
+	gcv.fill_style = FillSolid;
+
+	XChangeGC (fb->dpy, fb->gc, GCFillStyle | GCForeground, &gcv);
+    }
+
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+static void
+_fill_box_fini (struct _fill_box *fb,
+		cairo_xlib_surface_t *dst)
+{
+    _cairo_xlib_surface_put_gc (dst->display, dst, fb->gc);
+    //cairo_surface_destroy (fb->dither);
+}
+
+cairo_int_status_t
+_cairo_xlib_core_fill_boxes (cairo_xlib_surface_t    *dst,
+			     const cairo_color_t     *color,
+			     cairo_boxes_t	    *boxes)
+{
+    cairo_int_status_t status;
+    struct _fill_box fb;
+
+    status = _fill_box_init (&fb, dst, color);
+    if (unlikely (status))
+        return status;
+
+    _cairo_boxes_for_each_box (boxes, fill_box, &fb);
+
+    _fill_box_fini (&fb, dst);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+_cairo_xlib_core_fill_rectangles (cairo_xlib_surface_t    *dst,
+				  const cairo_color_t     *color,
+				  int num_rects,
+				  cairo_rectangle_int_t *rects)
+{
+    cairo_int_status_t status;
+    struct _fill_box fb;
+    int i;
+
+    status = _fill_box_init (&fb, dst, color);
+    if (unlikely (status))
+        return status;
+
+    for (i = 0; i < num_rects; i++)
+	XFillRectangle (fb.dpy, fb.drawable, fb.gc,
+			rects[i].x, rects[i].y,
+			rects[i].width, rects[i].height);
+
+    _fill_box_fini (&fb, dst);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+struct _fallback_box {
+    cairo_xlib_surface_t	*dst;
+    cairo_format_t		 format;
+    const cairo_pattern_t	*pattern;
+};
+
+static cairo_bool_t fallback_box (cairo_box_t *box, void *closure)
+{
+    struct _fallback_box *data = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+    cairo_surface_t *image;
+    cairo_status_t status;
+
+    /* XXX for EXTEND_NONE and if the box is wholly outside we can just fill */
+
+    image = cairo_surface_create_similar_image (&data->dst->base, data->format,
+						width, height);
+    status = _cairo_surface_offset_paint (image, x, y,
+					  CAIRO_OPERATOR_SOURCE,
+					  data->pattern, NULL);
+    if (status == CAIRO_STATUS_SUCCESS) {
+	status = _cairo_xlib_surface_draw_image (data->dst,
+						 (cairo_image_surface_t *)image,
+						 0, 0,
+						 width, height,
+						 x, y);
+    }
+    cairo_surface_destroy (image);
+
+    return status == CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+fallback_boxes (cairo_xlib_surface_t	*dst,
+		const cairo_pattern_t	*pattern,
+		cairo_boxes_t		*boxes)
+{
+    struct _fallback_box fb;
+
+    /* XXX create_similar_image using pixman_format? */
+    switch (dst->depth) {
+    case 8: fb.format = CAIRO_FORMAT_A8; break;
+    case 16: fb.format = CAIRO_FORMAT_RGB16_565; break;
+    case 24: fb.format = CAIRO_FORMAT_RGB24; break;
+    case 30: fb.format = CAIRO_FORMAT_RGB30; break;
+    case 32: fb.format = CAIRO_FORMAT_ARGB32; break;
+    default: return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    fb.dst = dst;
+    fb.pattern = pattern;
+
+    if (! _cairo_boxes_for_each_box (boxes, fallback_box, &fb))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+render_boxes (cairo_xlib_surface_t	*dst,
+	      const cairo_pattern_t	*pattern,
+	      cairo_boxes_t		*boxes)
+{
+    if (pattern->filter != CAIRO_FILTER_NEAREST)
+	return fallback_boxes (dst, pattern, boxes);
+
+    switch (pattern->extend) {
+    default:
+    case CAIRO_EXTEND_NONE:
+    case CAIRO_EXTEND_REFLECT:
+    case CAIRO_EXTEND_PAD:
+	return fallback_boxes (dst, pattern, boxes);
+
+    case CAIRO_EXTEND_REPEAT: /* XXX Use tiling */
+	return fallback_boxes (dst, pattern, boxes);
+    }
+}
+
+/* the mid-level: converts boxes into drawing operations */
+
+struct _box_data {
+    Display *dpy;
+    cairo_xlib_surface_t *dst;
+    cairo_surface_t *src;
+    GC gc;
+    int tx, ty;
+    int width, height;
+};
+
+static cairo_bool_t source_contains_box (cairo_box_t *box, void *closure)
+{
+    struct _box_data *data = closure;
+
+    /* The box is pixel-aligned so the truncation is safe. */
+    return
+	_cairo_fixed_integer_part (box->p1.x) + data->tx >= 0 &&
+	_cairo_fixed_integer_part (box->p1.y) + data->ty >= 0 &&
+	_cairo_fixed_integer_part (box->p2.x) + data->tx <= data->width &&
+	_cairo_fixed_integer_part (box->p2.y) + data->ty <= data->height;
+}
+
+static cairo_bool_t image_upload_box (cairo_box_t *box, void *closure)
+{
+    const struct _box_data *iub = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+
+    return _cairo_xlib_surface_draw_image (iub->dst,
+					   (cairo_image_surface_t *)iub->src,
+					   x + iub->tx, y + iub->ty,
+					   width, height,
+					   x, y) == CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+surface_matches_image_format (cairo_xlib_surface_t *surface,
+			      cairo_image_surface_t *image)
+{
+    cairo_format_masks_t format;
+
+    return (_pixman_format_to_masks (image->pixman_format, &format) &&
+	    (format.alpha_mask == surface->a_mask || surface->a_mask == 0) &&
+	    (format.red_mask   == surface->r_mask || surface->r_mask == 0) &&
+	    (format.green_mask == surface->g_mask || surface->g_mask == 0) &&
+	    (format.blue_mask  == surface->b_mask || surface->b_mask == 0));
+}
+
+static cairo_status_t
+upload_image_inplace (cairo_xlib_surface_t *dst,
+		      const cairo_pattern_t *source,
+		      cairo_boxes_t *boxes)
+{
+    const cairo_surface_pattern_t *pattern;
+    struct _box_data iub;
+    cairo_image_surface_t *image;
+
+    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    if (pattern->surface->type != CAIRO_SURFACE_TYPE_IMAGE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    image = (cairo_image_surface_t *) pattern->surface;
+    if (image->format == CAIRO_FORMAT_INVALID)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (image->depth != dst->depth)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! surface_matches_image_format (dst, image))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* XXX subsurface */
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix,
+						&iub.tx, &iub.ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    iub.dst = dst;
+    iub.src = &image->base;
+    iub.width  = image->width;
+    iub.height = image->height;
+
+    /* First check that the data is entirely within the image */
+    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &iub))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_boxes_for_each_box (boxes, image_upload_box, &iub))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t copy_box (cairo_box_t *box, void *closure)
+{
+    const struct _box_data *cb = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+
+    XCopyArea (cb->dpy,
+	       ((cairo_xlib_surface_t *)cb->src)->drawable,
+	       cb->dst->drawable,
+	       cb->gc,
+	       x + cb->tx, y + cb->ty,
+	       width, height,
+	       x, y);
+    return TRUE;
+}
+
+static cairo_status_t
+copy_boxes (cairo_xlib_surface_t *dst,
+	    const cairo_pattern_t *source,
+	    cairo_boxes_t *boxes)
+{
+    const cairo_surface_pattern_t *pattern;
+    struct _box_data cb;
+    cairo_xlib_surface_t *src;
+    cairo_status_t status;
+
+    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* XXX subsurface */
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    if (pattern->surface->backend->type != CAIRO_SURFACE_TYPE_XLIB)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    src = (cairo_xlib_surface_t *) pattern->surface;
+    if (src->depth != dst->depth)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* We can only have a single control for subwindow_mode on the
+     * GC. If we have a Window destination, we need to set ClipByChildren,
+     * but if we have a Window source, we need IncludeInferiors. If we have
+     * both a Window destination and source, we must fallback. There is
+     * no convenient way to detect if a drawable is a Pixmap or Window,
+     * therefore we can only rely on those surfaces that we created
+     * ourselves to be Pixmaps, and treat everything else as a potential
+     * Window.
+     */
+    if (! src->owns_pixmap && ! dst->owns_pixmap)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_xlib_surface_same_screen (dst, src))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix,
+						&cb.tx, &cb.ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cb.dpy = dst->display->display;
+    cb.dst = dst;
+    cb.src = &src->base;
+    cb.width  = src->width;
+    cb.height = src->height;
+
+    /* First check that the data is entirely within the image */
+    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_xlib_surface_get_gc (dst->display, dst, &cb.gc);
+    if (unlikely (status))
+	return status;
+
+    if (! src->owns_pixmap) {
+	XGCValues gcv;
+
+	gcv.subwindow_mode = IncludeInferiors;
+	XChangeGC (dst->display->display, cb.gc, GCSubwindowMode, &gcv);
+    }
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (! _cairo_boxes_for_each_box (boxes, copy_box, &cb))
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! src->owns_pixmap) {
+	XGCValues gcv;
+
+	gcv.subwindow_mode = ClipByChildren;
+	XChangeGC (dst->display->display, cb.gc, GCSubwindowMode, &gcv);
+    }
+
+    _cairo_xlib_surface_put_gc (dst->display, dst, cb.gc);
+
+    return status;
+}
+
+static cairo_status_t
+draw_boxes (cairo_composite_rectangles_t *extents,
+	    cairo_boxes_t *boxes)
+{
+    cairo_xlib_surface_t *dst = (cairo_xlib_surface_t *)extents->surface;
+    cairo_operator_t op = extents->op;
+    const cairo_pattern_t *src = &extents->source_pattern.base;
+    cairo_int_status_t status;
+
+    if (boxes->num_boxes == 0 && extents->is_bounded)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (! boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (op == CAIRO_OPERATOR_CLEAR)
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (op == CAIRO_OPERATOR_OVER &&
+	_cairo_pattern_is_opaque (src, &extents->bounded))
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (dst->base.is_clear && op == CAIRO_OPERATOR_OVER)
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (op != CAIRO_OPERATOR_SOURCE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = acquire (dst);
+    if (unlikely (status))
+	return status;
+
+    if (src->type == CAIRO_PATTERN_TYPE_SOLID) {
+	status = _cairo_xlib_core_fill_boxes
+	    (dst, &((cairo_solid_pattern_t *) src)->color, boxes);
+    } else {
+	status = upload_image_inplace (dst, src, boxes);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    status = copy_boxes (dst, src, boxes);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    status = render_boxes (dst, src, boxes);
+    }
+
+    release (dst);
+
+    return status;
+}
+
+/* high-level compositor interface */
+
+static cairo_int_status_t
+_cairo_xlib_core_compositor_paint (const cairo_compositor_t	*compositor,
+				   cairo_composite_rectangles_t *extents)
+{
+    cairo_int_status_t status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (_cairo_clip_is_region (extents->clip)) {
+	cairo_boxes_t boxes;
+
+	 _cairo_clip_steal_boxes (extents->clip, &boxes);
+	 status = draw_boxes (extents, &boxes);
+	 _cairo_clip_unsteal_boxes (extents->clip, &boxes);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_xlib_core_compositor_stroke (const cairo_compositor_t	*compositor,
+				    cairo_composite_rectangles_t *extents,
+				    const cairo_path_fixed_t	*path,
+				    const cairo_stroke_style_t	*style,
+				    const cairo_matrix_t	*ctm,
+				    const cairo_matrix_t	*ctm_inverse,
+				    double			 tolerance,
+				    cairo_antialias_t		 antialias)
+{
+    cairo_int_status_t status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (extents->clip->path == NULL &&
+	_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, extents->clip);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								style,
+								ctm,
+								antialias,
+								&boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = draw_boxes (extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_xlib_core_compositor_fill (const cairo_compositor_t	*compositor,
+				  cairo_composite_rectangles_t	*extents,
+				  const cairo_path_fixed_t	*path,
+				  cairo_fill_rule_t		 fill_rule,
+				  double			 tolerance,
+				  cairo_antialias_t		 antialias)
+{
+    cairo_int_status_t status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (extents->clip->path == NULL &&
+	_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init_with_clip (&boxes, extents->clip);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      antialias,
+							      &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = draw_boxes (extents, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    return status;
+}
+
+const cairo_compositor_t *
+_cairo_xlib_core_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	compositor.delegate = _cairo_xlib_fallback_compositor_get ();
+
+	compositor.paint = _cairo_xlib_core_compositor_paint;
+	compositor.mask  = NULL;
+	compositor.fill  = _cairo_xlib_core_compositor_fill;
+	compositor.stroke = _cairo_xlib_core_compositor_stroke;
+	compositor.glyphs = NULL; /* XXX PolyGlyph? */
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-display.c b/libs/cairo-1.16.0/src/cairo-xlib-display.c
new file mode 100644
index 0000000..add4229
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-display.c
@@ -0,0 +1,655 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-xrender-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+
+#include <X11/Xlibint.h>	/* For XESetCloseDisplay */
+
+typedef int (*cairo_xlib_error_func_t) (Display     *display,
+					XErrorEvent *event);
+
+static cairo_xlib_display_t *_cairo_xlib_display_list;
+
+static int
+_noop_error_handler (Display     *display,
+		     XErrorEvent *event)
+{
+    return False;		/* return value is ignored */
+}
+
+static void
+_cairo_xlib_display_finish (void *abstract_display)
+{
+    cairo_xlib_display_t *display = abstract_display;
+    Display *dpy = display->display;
+
+    _cairo_xlib_display_fini_shm (display);
+
+    if (! cairo_device_acquire (&display->base)) {
+	cairo_xlib_error_func_t old_handler;
+
+	/* protect the notifies from triggering XErrors */
+	XSync (dpy, False);
+	old_handler = XSetErrorHandler (_noop_error_handler);
+
+	while (! cairo_list_is_empty (&display->fonts)) {
+	    _cairo_xlib_font_close (cairo_list_first_entry (&display->fonts,
+							    cairo_xlib_font_t,
+							    link));
+	}
+
+	while (! cairo_list_is_empty (&display->screens)) {
+	    _cairo_xlib_screen_destroy (display,
+					cairo_list_first_entry (&display->screens,
+								cairo_xlib_screen_t,
+								link));
+	}
+
+	XSync (dpy, False);
+	XSetErrorHandler (old_handler);
+
+	cairo_device_release (&display->base);
+    }
+}
+
+static void
+_cairo_xlib_display_destroy (void *abstract_display)
+{
+    cairo_xlib_display_t *display = abstract_display;
+
+    free (display);
+}
+
+static int
+_cairo_xlib_close_display (Display *dpy, XExtCodes *codes)
+{
+    cairo_xlib_display_t *display, **prev, *next;
+
+    CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex);
+    for (display = _cairo_xlib_display_list; display; display = display->next)
+	if (display->display == dpy)
+	    break;
+    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+    if (display == NULL)
+	return 0;
+
+    cairo_device_finish (&display->base);
+
+    /*
+     * Unhook from the global list
+     */
+    CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex);
+    prev = &_cairo_xlib_display_list;
+    for (display = _cairo_xlib_display_list; display; display = next) {
+	next = display->next;
+	if (display->display == dpy) {
+	    *prev = next;
+	    break;
+	} else
+	    prev = &display->next;
+    }
+    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+
+    display->display = NULL; /* catch any later invalid access */
+    cairo_device_destroy (&display->base);
+
+    /* Return value in accordance with requirements of
+     * XESetCloseDisplay */
+    return 0;
+}
+
+static const cairo_device_backend_t _cairo_xlib_device_backend = {
+    CAIRO_DEVICE_TYPE_XLIB,
+
+    NULL,
+    NULL,
+
+    NULL, /* flush */
+    _cairo_xlib_display_finish,
+    _cairo_xlib_display_destroy,
+};
+
+static void _cairo_xlib_display_select_compositor (cairo_xlib_display_t *display)
+{
+#if 1
+    if (display->render_major > 0 || display->render_minor >= 4)
+	display->compositor = _cairo_xlib_traps_compositor_get ();
+    else if (display->render_major > 0 || display->render_minor >= 0)
+	display->compositor = _cairo_xlib_mask_compositor_get ();
+    else
+	display->compositor = _cairo_xlib_core_compositor_get ();
+#else
+    display->compositor = _cairo_xlib_fallback_compositor_get ();
+#endif
+}
+
+/**
+ * _cairo_xlib_device_create:
+ * @dpy: the display to create the device for
+ *
+ * Gets the device belonging to @dpy, or creates it if it doesn't exist yet.
+ *
+ * Returns: the device belonging to @dpy
+ **/
+cairo_device_t *
+_cairo_xlib_device_create (Display *dpy)
+{
+    cairo_xlib_display_t *display;
+    cairo_xlib_display_t **prev;
+    cairo_device_t *device;
+    XExtCodes *codes;
+    const char *env;
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    /* There is an apparent deadlock between this mutex and the
+     * mutex for the display, but it's actually safe. For the
+     * app to call XCloseDisplay() while any other thread is
+     * inside this function would be an error in the logic
+     * app, and the CloseDisplay hook is the only other place we
+     * acquire this mutex.
+     */
+    CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex);
+
+    for (prev = &_cairo_xlib_display_list; (display = *prev); prev = &(*prev)->next)
+    {
+	if (display->display == dpy) {
+	    /*
+	     * MRU the list
+	     */
+	    if (prev != &_cairo_xlib_display_list) {
+		*prev = display->next;
+		display->next = _cairo_xlib_display_list;
+		_cairo_xlib_display_list = display;
+	    }
+            device = cairo_device_reference (&display->base);
+	    goto UNLOCK;
+	}
+    }
+
+    display = _cairo_malloc (sizeof (cairo_xlib_display_t));
+    if (unlikely (display == NULL)) {
+	device = _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	goto UNLOCK;
+    }
+
+    _cairo_device_init (&display->base, &_cairo_xlib_device_backend);
+
+    display->display = dpy;
+    cairo_list_init (&display->screens);
+    cairo_list_init (&display->fonts);
+    display->closed = FALSE;
+
+    /* Xlib calls out to the extension close_display hooks in LIFO
+     * order. So we have to ensure that all extensions that we depend
+     * on in our close_display hook are properly initialized before we
+     * add our hook. For now, that means Render, so we call into its
+     * QueryVersion function to ensure it gets initialized.
+     */
+    display->render_major = display->render_minor = -1;
+    XRenderQueryVersion (dpy, &display->render_major, &display->render_minor);
+    env = getenv ("CAIRO_DEBUG");
+    if (env != NULL && (env = strstr (env, "xrender-version=")) != NULL) {
+	int max_render_major, max_render_minor;
+
+	env += sizeof ("xrender-version=") - 1;
+	if (sscanf (env, "%d.%d", &max_render_major, &max_render_minor) != 2)
+	    max_render_major = max_render_minor = -1;
+
+	if (max_render_major < display->render_major ||
+	    (max_render_major == display->render_major &&
+	     max_render_minor < display->render_minor))
+	{
+	    display->render_major = max_render_major;
+	    display->render_minor = max_render_minor;
+	}
+    }
+
+    _cairo_xlib_display_select_compositor (display);
+
+    display->white = NULL;
+    memset (display->alpha, 0, sizeof (display->alpha));
+    memset (display->solid, 0, sizeof (display->solid));
+    memset (display->solid_cache, 0, sizeof (display->solid_cache));
+    memset (display->last_solid_cache, 0, sizeof (display->last_solid_cache));
+
+    memset (display->cached_xrender_formats, 0,
+	    sizeof (display->cached_xrender_formats));
+
+    display->force_precision = -1;
+
+    _cairo_xlib_display_init_shm (display);
+
+    /* Prior to Render 0.10, there is no protocol support for gradients and
+     * we call function stubs instead, which would silently consume the drawing.
+     */
+#if RENDER_MAJOR == 0 && RENDER_MINOR < 10
+    display->buggy_gradients = TRUE;
+#else
+    display->buggy_gradients = FALSE;
+#endif
+    display->buggy_pad_reflect = FALSE;
+    display->buggy_repeat = FALSE;
+
+    /* This buggy_repeat condition is very complicated because there
+     * are multiple X server code bases (with multiple versioning
+     * schemes within a code base), and multiple bugs.
+     *
+     * The X servers:
+     *
+     *    1. The Vendor=="XFree86" code base with release numbers such
+     *    as 4.7.0 (VendorRelease==40700000).
+     *
+     *    2. The Vendor=="X.Org" code base (a descendant of the
+     *    XFree86 code base). It originally had things like
+     *    VendorRelease==60700000 for release 6.7.0 but then changed
+     *    its versioning scheme so that, for example,
+     *    VendorRelease==10400000 for the 1.4.0 X server within the
+     *    X.Org 7.3 release.
+     *
+     * The bugs:
+     *
+     *    1. The original bug that led to the buggy_repeat
+     *    workaround. This was a bug that Owen Taylor investigated,
+     *    understood well, and characterized against various X
+     *    servers. Confirmed X servers with this bug include:
+     *
+     *		"XFree86" <= 40500000
+     *		"X.Org" <= 60802000 (only with old numbering >= 60700000)
+     *
+     *    2. A separate bug resulting in a crash of the X server when
+     *    using cairo's extend-reflect test case, (which, surprisingly
+     *    enough was not passing RepeatReflect to the X server, but
+     *    instead using RepeatNormal in a workaround). Nobody to date
+     *    has understood the bug well, but it appears to be gone as of
+     *    the X.Org 1.4.0 server. This bug is coincidentally avoided
+     *    by using the same buggy_repeat workaround. Confirmed X
+     *    servers with this bug include:
+     *
+     *		"X.org" == 60900000 (old versioning scheme)
+     *		"X.org"  < 10400000 (new numbering scheme)
+     *
+     *    For the old-versioning-scheme X servers we don't know
+     *    exactly when second the bug started, but since bug 1 is
+     *    present through 6.8.2 and bug 2 is present in 6.9.0 it seems
+     *    safest to just blacklist all old-versioning-scheme X servers,
+     *    (just using VendorRelease < 70000000), as buggy_repeat=TRUE.
+     */
+    if (_cairo_xlib_vendor_is_xorg (dpy)) {
+	if (VendorRelease (dpy) >= 60700000) {
+	    if (VendorRelease (dpy) < 70000000)
+		display->buggy_repeat = TRUE;
+
+	    /* We know that gradients simply do not work in early Xorg servers */
+	    if (VendorRelease (dpy) < 70200000)
+		display->buggy_gradients = TRUE;
+
+	    /* And the extended repeat modes were not fixed until much later */
+	    display->buggy_pad_reflect = TRUE;
+	} else {
+	    if (VendorRelease (dpy) < 10400000)
+		display->buggy_repeat = TRUE;
+
+	    /* Too many bugs in the early drivers */
+	    if (VendorRelease (dpy) < 10699000)
+		display->buggy_pad_reflect = TRUE;
+	}
+    } else if (strstr (ServerVendor (dpy), "XFree86") != NULL) {
+	if (VendorRelease (dpy) <= 40500000)
+	    display->buggy_repeat = TRUE;
+
+	display->buggy_gradients = TRUE;
+	display->buggy_pad_reflect = TRUE;
+    }
+
+    codes = XAddExtension (dpy);
+    if (unlikely (codes == NULL)) {
+	device = _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	free (display);
+	goto UNLOCK;
+    }
+
+    XESetCloseDisplay (dpy, codes->extension, _cairo_xlib_close_display);
+    cairo_device_reference (&display->base); /* add one for the CloseDisplay */
+
+    display->next = _cairo_xlib_display_list;
+    _cairo_xlib_display_list = display;
+
+    device = &display->base;
+
+UNLOCK:
+    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+    return device;
+}
+
+cairo_status_t
+_cairo_xlib_display_acquire (cairo_device_t *device, cairo_xlib_display_t **display)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (device);
+    if (status)
+        return status;
+
+    *display = (cairo_xlib_display_t *) device;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+XRenderPictFormat *
+_cairo_xlib_display_get_xrender_format_for_pixman(cairo_xlib_display_t *display,
+						  pixman_format_code_t format)
+{
+    Display *dpy = display->display;
+    XRenderPictFormat tmpl;
+    int mask;
+
+#define MASK(x) ((1<<(x))-1)
+
+    tmpl.depth = PIXMAN_FORMAT_DEPTH(format);
+    mask = PictFormatType | PictFormatDepth;
+
+    switch (PIXMAN_FORMAT_TYPE(format)) {
+    case PIXMAN_TYPE_ARGB:
+	tmpl.type = PictTypeDirect;
+
+	tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format));
+	if (PIXMAN_FORMAT_A(format))
+	    tmpl.direct.alpha = (PIXMAN_FORMAT_R(format) +
+				 PIXMAN_FORMAT_G(format) +
+				 PIXMAN_FORMAT_B(format));
+
+	tmpl.direct.redMask = MASK(PIXMAN_FORMAT_R(format));
+	tmpl.direct.red = (PIXMAN_FORMAT_G(format) +
+			   PIXMAN_FORMAT_B(format));
+
+	tmpl.direct.greenMask = MASK(PIXMAN_FORMAT_G(format));
+	tmpl.direct.green = PIXMAN_FORMAT_B(format);
+
+	tmpl.direct.blueMask = MASK(PIXMAN_FORMAT_B(format));
+	tmpl.direct.blue = 0;
+
+	mask |= PictFormatRed | PictFormatRedMask;
+	mask |= PictFormatGreen | PictFormatGreenMask;
+	mask |= PictFormatBlue | PictFormatBlueMask;
+	mask |= PictFormatAlpha | PictFormatAlphaMask;
+	break;
+
+    case PIXMAN_TYPE_ABGR:
+	tmpl.type = PictTypeDirect;
+
+	tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format));
+	if (tmpl.direct.alphaMask)
+	    tmpl.direct.alpha = (PIXMAN_FORMAT_B(format) +
+				 PIXMAN_FORMAT_G(format) +
+				 PIXMAN_FORMAT_R(format));
+
+	tmpl.direct.blueMask = MASK(PIXMAN_FORMAT_B(format));
+	tmpl.direct.blue = (PIXMAN_FORMAT_G(format) +
+			    PIXMAN_FORMAT_R(format));
+
+	tmpl.direct.greenMask = MASK(PIXMAN_FORMAT_G(format));
+	tmpl.direct.green = PIXMAN_FORMAT_R(format);
+
+	tmpl.direct.redMask = MASK(PIXMAN_FORMAT_R(format));
+	tmpl.direct.red = 0;
+
+	mask |= PictFormatRed | PictFormatRedMask;
+	mask |= PictFormatGreen | PictFormatGreenMask;
+	mask |= PictFormatBlue | PictFormatBlueMask;
+	mask |= PictFormatAlpha | PictFormatAlphaMask;
+	break;
+
+    case PIXMAN_TYPE_BGRA:
+	tmpl.type = PictTypeDirect;
+
+	tmpl.direct.blueMask = MASK(PIXMAN_FORMAT_B(format));
+	tmpl.direct.blue = (PIXMAN_FORMAT_BPP(format) - PIXMAN_FORMAT_B(format));
+
+	tmpl.direct.greenMask = MASK(PIXMAN_FORMAT_G(format));
+	tmpl.direct.green = (PIXMAN_FORMAT_BPP(format) - PIXMAN_FORMAT_B(format) -
+			     PIXMAN_FORMAT_G(format));
+
+	tmpl.direct.redMask = MASK(PIXMAN_FORMAT_R(format));
+	tmpl.direct.red = (PIXMAN_FORMAT_BPP(format) - PIXMAN_FORMAT_B(format) -
+			   PIXMAN_FORMAT_G(format) - PIXMAN_FORMAT_R(format));
+
+	tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format));
+	tmpl.direct.alpha = 0;
+
+	mask |= PictFormatRed | PictFormatRedMask;
+	mask |= PictFormatGreen | PictFormatGreenMask;
+	mask |= PictFormatBlue | PictFormatBlueMask;
+	mask |= PictFormatAlpha | PictFormatAlphaMask;
+	break;
+
+    case PIXMAN_TYPE_A:
+	tmpl.type = PictTypeDirect;
+
+	tmpl.direct.alpha = 0;
+	tmpl.direct.alphaMask = MASK(PIXMAN_FORMAT_A(format));
+
+	mask |= PictFormatAlpha | PictFormatAlphaMask;
+	break;
+
+    case PIXMAN_TYPE_COLOR:
+    case PIXMAN_TYPE_GRAY:
+	/* XXX Find matching visual/colormap */
+	tmpl.type = PictTypeIndexed;
+	//tmpl.colormap = screen->visuals[PIXMAN_FORMAT_VIS(format)].vid;
+	//mask |= PictFormatColormap;
+	return NULL;
+    }
+#undef MASK
+
+    /* XXX caching? */
+    return XRenderFindFormat(dpy, mask, &tmpl, 0);
+}
+
+XRenderPictFormat *
+_cairo_xlib_display_get_xrender_format (cairo_xlib_display_t	*display,
+	                                cairo_format_t		 format)
+{
+    XRenderPictFormat *xrender_format;
+
+    xrender_format = display->cached_xrender_formats[format];
+    if (xrender_format == NULL) {
+	int pict_format = PictStandardNUM;
+
+	switch (format) {
+	case CAIRO_FORMAT_A1:
+	    pict_format = PictStandardA1; break;
+	case CAIRO_FORMAT_A8:
+	    pict_format = PictStandardA8; break;
+	case CAIRO_FORMAT_RGB24:
+	    pict_format = PictStandardRGB24; break;
+	case CAIRO_FORMAT_RGB16_565:
+	    xrender_format = _cairo_xlib_display_get_xrender_format_for_pixman(display,
+									       PIXMAN_r5g6b5);
+	    break;
+	case CAIRO_FORMAT_RGB30:
+	    xrender_format = _cairo_xlib_display_get_xrender_format_for_pixman(display,
+									       PIXMAN_x2r10g10b10);
+	    break;
+	case CAIRO_FORMAT_INVALID:
+	default:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_FORMAT_ARGB32:
+	    pict_format = PictStandardARGB32; break;
+	}
+	if (pict_format != PictStandardNUM)
+	    xrender_format =
+		XRenderFindStandardFormat (display->display, pict_format);
+	display->cached_xrender_formats[format] = xrender_format;
+    }
+
+    return xrender_format;
+}
+
+cairo_xlib_screen_t *
+_cairo_xlib_display_get_screen (cairo_xlib_display_t *display,
+				Screen *screen)
+{
+    cairo_xlib_screen_t *info;
+
+    cairo_list_foreach_entry (info, cairo_xlib_screen_t, &display->screens, link) {
+	if (info->screen == screen) {
+            if (display->screens.next != &info->link)
+                cairo_list_move (&info->link, &display->screens);
+            return info;
+        }
+    }
+
+    return NULL;
+}
+
+cairo_bool_t
+_cairo_xlib_display_has_repeat (cairo_device_t *device)
+{
+    return ! ((cairo_xlib_display_t *) device)->buggy_repeat;
+}
+
+cairo_bool_t
+_cairo_xlib_display_has_reflect (cairo_device_t *device)
+{
+    return ! ((cairo_xlib_display_t *) device)->buggy_pad_reflect;
+}
+
+cairo_bool_t
+_cairo_xlib_display_has_gradients (cairo_device_t *device)
+{
+    return ! ((cairo_xlib_display_t *) device)->buggy_gradients;
+}
+
+/**
+ * cairo_xlib_device_debug_cap_xrender_version:
+ * @device: a #cairo_device_t for the Xlib backend
+ * @major_version: major version to restrict to
+ * @minor_version: minor version to restrict to
+ *
+ * Restricts all future Xlib surfaces for this devices to the specified version
+ * of the RENDER extension. This function exists solely for debugging purpose.
+ * It lets you find out how cairo would behave with an older version of
+ * the RENDER extension.
+ *
+ * Use the special values -1 and -1 for disabling the RENDER extension.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xlib_device_debug_cap_xrender_version (cairo_device_t *device,
+					     int major_version,
+					     int minor_version)
+{
+    cairo_xlib_display_t *display = (cairo_xlib_display_t *) device;
+
+    if (device == NULL || device->status)
+	return;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB)
+	return;
+
+    if (major_version < display->render_major ||
+	(major_version == display->render_major &&
+	 minor_version < display->render_minor))
+    {
+	display->render_major = major_version;
+	display->render_minor = minor_version;
+    }
+
+    _cairo_xlib_display_select_compositor (display);
+}
+
+/**
+ * cairo_xlib_device_debug_set_precision:
+ * @device: a #cairo_device_t for the Xlib backend
+ * @precision: the precision to use
+ *
+ * Render supports two modes of precision when rendering trapezoids. Set
+ * the precision to the desired mode.
+ *
+ * Since: 1.12
+ **/
+void
+cairo_xlib_device_debug_set_precision (cairo_device_t *device,
+				       int precision)
+{
+    if (device == NULL || device->status)
+	return;
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return;
+    }
+
+    ((cairo_xlib_display_t *) device)->force_precision = precision;
+}
+
+/**
+ * cairo_xlib_device_debug_get_precision:
+ * @device: a #cairo_device_t for the Xlib backend
+ *
+ * Get the Xrender precision mode.
+ *
+ * Returns: the render precision mode
+ *
+ * Since: 1.12
+ **/
+int
+cairo_xlib_device_debug_get_precision (cairo_device_t *device)
+{
+    if (device == NULL || device->status)
+	return -1;
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return -1;
+    }
+
+    return ((cairo_xlib_display_t *) device)->force_precision;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-fallback-compositor.c b/libs/cairo-1.16.0/src/cairo-xlib-fallback-compositor.c
new file mode 100644
index 0000000..ed2845d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-fallback-compositor.c
@@ -0,0 +1,248 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-offset-private.h"
+
+static const cairo_compositor_t *
+_get_compositor (cairo_surface_t *surface)
+{
+    return ((cairo_image_surface_t *)surface)->compositor;
+}
+
+static cairo_bool_t
+unclipped (cairo_xlib_surface_t *xlib, cairo_clip_t *clip)
+{
+    cairo_rectangle_int_t r;
+
+    r.x = r.y = 0;
+    r.width = xlib->width;
+    r.height = xlib->height;
+    return _cairo_clip_contains_rectangle (clip, &r);
+}
+
+static cairo_int_status_t
+_cairo_xlib_shm_compositor_paint (const cairo_compositor_t	*_compositor,
+				  cairo_composite_rectangles_t	*extents)
+{
+    cairo_xlib_surface_t *xlib = (cairo_xlib_surface_t *)extents->surface;
+    cairo_int_status_t status;
+    cairo_surface_t *shm;
+    cairo_bool_t overwrite;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    overwrite =
+	extents->op <= CAIRO_OPERATOR_SOURCE && unclipped (xlib, extents->clip);
+
+    shm = _cairo_xlib_surface_get_shm (xlib, overwrite);
+    if (shm == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_compositor_paint (_get_compositor (shm), shm,
+				      extents->op,
+				      &extents->source_pattern.base,
+				      extents->clip);
+    if (unlikely (status))
+	return status;
+
+    xlib->base.is_clear =
+	extents->op == CAIRO_OPERATOR_CLEAR && unclipped (xlib, extents->clip);
+    xlib->base.serial++;
+    xlib->fallback++;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_xlib_shm_compositor_mask (const cairo_compositor_t	*_compositor,
+				 cairo_composite_rectangles_t	*extents)
+{
+    cairo_xlib_surface_t *xlib = (cairo_xlib_surface_t *)extents->surface;
+    cairo_int_status_t status;
+    cairo_surface_t *shm;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    shm = _cairo_xlib_surface_get_shm (xlib, FALSE);
+    if (shm == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_compositor_mask (_get_compositor (shm), shm,
+				     extents->op,
+				     &extents->source_pattern.base,
+				     &extents->mask_pattern.base,
+				     extents->clip);
+    if (unlikely (status))
+	return status;
+
+    xlib->base.is_clear = FALSE;
+    xlib->base.serial++;
+    xlib->fallback++;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_xlib_shm_compositor_stroke (const cairo_compositor_t	*_compositor,
+				   cairo_composite_rectangles_t *extents,
+				   const cairo_path_fixed_t	*path,
+				   const cairo_stroke_style_t	*style,
+				   const cairo_matrix_t		*ctm,
+				   const cairo_matrix_t		*ctm_inverse,
+				   double			 tolerance,
+				   cairo_antialias_t		 antialias)
+{
+    cairo_xlib_surface_t *xlib = (cairo_xlib_surface_t *)extents->surface;
+    cairo_int_status_t status;
+    cairo_surface_t *shm;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    shm = _cairo_xlib_surface_get_shm (xlib, FALSE);
+    if (shm == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_compositor_stroke (_get_compositor (shm), shm,
+				       extents->op,
+				       &extents->source_pattern.base,
+				       path, style,
+				       ctm, ctm_inverse,
+				       tolerance,
+				       antialias,
+				       extents->clip);
+    if (unlikely (status))
+	return status;
+
+    xlib->base.is_clear = FALSE;
+    xlib->base.serial++;
+    xlib->fallback++;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_xlib_shm_compositor_fill (const cairo_compositor_t	*_compositor,
+				 cairo_composite_rectangles_t *extents,
+				 const cairo_path_fixed_t	*path,
+				 cairo_fill_rule_t		 fill_rule,
+				 double				 tolerance,
+				 cairo_antialias_t		 antialias)
+{
+    cairo_xlib_surface_t *xlib = (cairo_xlib_surface_t *)extents->surface;
+    cairo_int_status_t status;
+    cairo_surface_t *shm;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    shm = _cairo_xlib_surface_get_shm (xlib, FALSE);
+    if (shm == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_compositor_fill (_get_compositor (shm), shm,
+				     extents->op,
+				     &extents->source_pattern.base,
+				     path,
+				     fill_rule, tolerance, antialias,
+				     extents->clip);
+    if (unlikely (status))
+	return status;
+
+    xlib->base.is_clear = FALSE;
+    xlib->base.serial++;
+    xlib->fallback++;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static cairo_int_status_t
+_cairo_xlib_shm_compositor_glyphs (const cairo_compositor_t	*_compositor,
+				   cairo_composite_rectangles_t *extents,
+				   cairo_scaled_font_t		*scaled_font,
+				   cairo_glyph_t		*glyphs,
+				   int				 num_glyphs,
+				   cairo_bool_t			 overlap)
+{
+    cairo_xlib_surface_t *xlib = (cairo_xlib_surface_t *)extents->surface;
+    cairo_int_status_t status;
+    cairo_surface_t *shm;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    shm = _cairo_xlib_surface_get_shm (xlib, FALSE);
+    if (shm == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_compositor_glyphs (_get_compositor (shm), shm,
+				       extents->op,
+				       &extents->source_pattern.base,
+				       glyphs, num_glyphs, scaled_font,
+				       extents->clip);
+    if (unlikely (status))
+	return status;
+
+    xlib->base.is_clear = FALSE;
+    xlib->base.serial++;
+    xlib->fallback++;
+    return CAIRO_INT_STATUS_NOTHING_TO_DO;
+}
+
+static const cairo_compositor_t _cairo_xlib_shm_compositor = {
+     &_cairo_fallback_compositor,
+
+     _cairo_xlib_shm_compositor_paint,
+     _cairo_xlib_shm_compositor_mask,
+     _cairo_xlib_shm_compositor_stroke,
+     _cairo_xlib_shm_compositor_fill,
+     _cairo_xlib_shm_compositor_glyphs,
+};
+
+const cairo_compositor_t *
+_cairo_xlib_fallback_compositor_get (void)
+{
+    return &_cairo_xlib_shm_compositor;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-private.h b/libs/cairo-1.16.0/src/cairo-xlib-private.h
new file mode 100644
index 0000000..71dccc3
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-private.h
@@ -0,0 +1,470 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+#ifndef CAIRO_XLIB_PRIVATE_H
+#define CAIRO_XLIB_PRIVATE_H
+
+#include "cairo-xlib-xrender-private.h"
+#include "cairo-xlib.h"
+
+#include "cairo-compiler-private.h"
+#include "cairo-device-private.h"
+#include "cairo-freelist-type-private.h"
+#include "cairo-list-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-types-private.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-surface-private.h"
+
+#include <pixman.h>
+#include <string.h>
+
+typedef struct _cairo_xlib_display cairo_xlib_display_t;
+typedef struct _cairo_xlib_shm_display cairo_xlib_shm_display_t;
+typedef struct _cairo_xlib_screen cairo_xlib_screen_t;
+typedef struct _cairo_xlib_source cairo_xlib_source_t;
+typedef struct _cairo_xlib_proxy cairo_xlib_proxy_t;
+typedef struct _cairo_xlib_surface cairo_xlib_surface_t;
+
+/* size of color cube */
+#define CUBE_SIZE 6
+/* size of gray ramp */
+#define RAMP_SIZE 16
+/* maximum number of cached GC's */
+#define GC_CACHE_SIZE 4
+
+struct _cairo_xlib_display {
+    cairo_device_t base;
+
+    cairo_xlib_display_t *next;
+
+    Display *display;
+    cairo_list_t screens;
+    cairo_list_t fonts;
+
+    cairo_xlib_shm_display_t *shm;
+
+    const cairo_compositor_t *compositor;
+
+    int render_major;
+    int render_minor;
+    XRenderPictFormat *cached_xrender_formats[CAIRO_FORMAT_RGB30 + 1];
+
+    int force_precision;
+
+    cairo_surface_t *white;
+    cairo_surface_t *alpha[256];
+    cairo_surface_t *solid[32];
+    uint32_t solid_cache[32]; /* low 16 are opaque, high 16 transparent */
+    struct {
+	uint32_t color;
+	int index;
+    } last_solid_cache[2];
+
+    /* TRUE if the server has a bug with repeating pictures
+     *
+     *  https://bugs.freedesktop.org/show_bug.cgi?id=3566
+     *
+     * We can't test for this because it depends on whether the
+     * picture is in video memory or not.
+     *
+     * We also use this variable as a guard against a second
+     * independent bug with transformed repeating pictures:
+     *
+     * https://lists.freedesktop.org/archives/cairo/2004-September/001839.html
+     *
+     * Both are fixed in xorg >= 6.9 and hopefully in > 6.8.2, so
+     * we can reuse the test for now.
+     */
+    unsigned int buggy_gradients : 1;
+    unsigned int buggy_pad_reflect : 1;
+    unsigned int buggy_repeat : 1;
+    unsigned int closed :1;
+};
+
+typedef struct _cairo_xlib_visual_info {
+    cairo_list_t link;
+    VisualID visualid;
+    struct { uint8_t a, r, g, b; } colors[256];
+    uint8_t cube_to_pseudocolor[CUBE_SIZE][CUBE_SIZE][CUBE_SIZE];
+    uint8_t field8_to_cube[256];
+    int8_t  dither8_to_cube[256];
+    uint8_t gray8_to_pseudocolor[256];
+} cairo_xlib_visual_info_t;
+
+struct _cairo_xlib_screen {
+    cairo_list_t link;
+
+    cairo_device_t *device;
+    Screen *screen;
+
+    cairo_list_t surfaces;
+
+    cairo_bool_t has_font_options;
+    cairo_font_options_t font_options;
+
+    GC gc[GC_CACHE_SIZE];
+    uint8_t gc_depths[GC_CACHE_SIZE];
+
+    cairo_list_t visuals;
+};
+
+enum {
+    GLYPHSET_INDEX_ARGB32,
+    GLYPHSET_INDEX_A8,
+    GLYPHSET_INDEX_A1,
+    NUM_GLYPHSETS
+};
+
+typedef struct _cairo_xlib_font_glyphset {
+    GlyphSet		glyphset;
+    cairo_format_t	format;
+    XRenderPictFormat	*xrender_format;
+    struct _cairo_xlib_font_glyphset_free_glyphs {
+	int		count;
+	unsigned long	indices[128];
+    } to_free;
+} cairo_xlib_font_glyphset_t;
+
+typedef struct _cairo_xlib_font {
+    cairo_scaled_font_private_t		base;
+    cairo_scaled_font_t			*font;
+    cairo_device_t			*device;
+    cairo_list_t			link;
+    cairo_xlib_font_glyphset_t		glyphset[NUM_GLYPHSETS];
+} cairo_xlib_font_t;
+
+struct _cairo_xlib_surface {
+    cairo_surface_t base;
+
+    Picture picture;
+    Drawable drawable;
+
+    const cairo_compositor_t *compositor;
+    cairo_surface_t *shm;
+    int fallback;
+
+    cairo_xlib_display_t *display;
+    cairo_xlib_screen_t *screen;
+    cairo_list_t link;
+
+    Display *dpy; /* only valid between acquire/release */
+    cairo_bool_t owns_pixmap;
+    Visual *visual;
+
+    int use_pixmap;
+
+    int width;
+    int height;
+    int depth;
+
+    int precision;
+    XRenderPictFormat *xrender_format;
+    /* XXX pixman_format instead of masks? */
+    uint32_t a_mask;
+    uint32_t r_mask;
+    uint32_t g_mask;
+    uint32_t b_mask;
+
+    struct _cairo_xlib_source {
+	cairo_surface_t base;
+
+	Picture picture;
+	Pixmap pixmap;
+	Display *dpy;
+
+	unsigned int filter:3;
+	unsigned int extend:3;
+	unsigned int has_matrix:1;
+	unsigned int has_component_alpha:1;
+    } embedded_source;
+};
+
+struct _cairo_xlib_proxy {
+    struct _cairo_xlib_source source;
+    cairo_surface_t *owner;
+};
+
+inline static cairo_bool_t
+_cairo_xlib_vendor_is_xorg (Display *dpy)
+{
+    const char *const vendor = ServerVendor (dpy);
+    return strstr (vendor, "X.Org") || strstr (vendor, "Xorg");
+}
+
+cairo_private cairo_status_t
+_cairo_xlib_surface_get_gc (cairo_xlib_display_t *display,
+                            cairo_xlib_surface_t *surface,
+                            GC                   *gc);
+
+cairo_private cairo_device_t *
+_cairo_xlib_device_create (Display *display);
+
+cairo_private void
+_cairo_xlib_display_init_shm (cairo_xlib_display_t *display);
+
+cairo_private void
+_cairo_xlib_display_fini_shm (cairo_xlib_display_t *display);
+
+cairo_private cairo_xlib_screen_t *
+_cairo_xlib_display_get_screen (cairo_xlib_display_t *display,
+				Screen *screen);
+
+cairo_private cairo_status_t
+_cairo_xlib_display_acquire (cairo_device_t *device,
+                             cairo_xlib_display_t **display);
+
+cairo_private cairo_bool_t
+_cairo_xlib_display_has_repeat (cairo_device_t *device);
+
+cairo_private cairo_bool_t
+_cairo_xlib_display_has_reflect (cairo_device_t *device);
+
+cairo_private cairo_bool_t
+_cairo_xlib_display_has_gradients (cairo_device_t *device);
+
+cairo_private void
+_cairo_xlib_display_set_precision(cairo_device_t *device,
+				  int precision);
+
+cairo_private XRenderPictFormat *
+_cairo_xlib_display_get_xrender_format (cairo_xlib_display_t	*display,
+	                                cairo_format_t		 format);
+
+cairo_private XRenderPictFormat *
+_cairo_xlib_display_get_xrender_format_for_pixman (cairo_xlib_display_t *display,
+						   pixman_format_code_t format);
+
+cairo_private cairo_status_t
+_cairo_xlib_screen_get (Display *dpy,
+			Screen *screen,
+			cairo_xlib_screen_t **out);
+
+cairo_private void
+_cairo_xlib_screen_destroy (cairo_xlib_display_t *display,
+			    cairo_xlib_screen_t *info);
+
+cairo_private GC
+_cairo_xlib_screen_get_gc (cairo_xlib_display_t *display,
+                           cairo_xlib_screen_t *info,
+			   int depth,
+			   Drawable drawable);
+cairo_private void
+_cairo_xlib_screen_put_gc (cairo_xlib_display_t *display,
+			   cairo_xlib_screen_t *info,
+			   int depth,
+			   GC gc);
+
+cairo_private cairo_font_options_t *
+_cairo_xlib_screen_get_font_options (cairo_xlib_screen_t *info);
+
+cairo_private cairo_status_t
+_cairo_xlib_screen_get_visual_info (cairo_xlib_display_t *display,
+                                    cairo_xlib_screen_t *info,
+				    Visual *visual,
+				    cairo_xlib_visual_info_t **out);
+
+cairo_private cairo_status_t
+_cairo_xlib_visual_info_create (Display *dpy,
+	                        int screen,
+				VisualID visualid,
+				cairo_xlib_visual_info_t **out);
+
+cairo_private void
+_cairo_xlib_visual_info_destroy (cairo_xlib_visual_info_t *info);
+
+cairo_private const cairo_compositor_t *
+_cairo_xlib_core_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_xlib_fallback_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_xlib_mask_compositor_get (void);
+
+cairo_private const cairo_compositor_t *
+_cairo_xlib_traps_compositor_get (void);
+
+cairo_private void
+_cairo_xlib_surface_ensure_picture (cairo_xlib_surface_t    *surface);
+
+cairo_private void
+_cairo_xlib_surface_set_precision (cairo_xlib_surface_t	*surface,
+				   cairo_antialias_t	 antialias);
+
+cairo_private cairo_int_status_t
+_cairo_xlib_surface_set_attributes (cairo_xlib_display_t       *display,
+                                    cairo_xlib_surface_t       *surface,
+				    cairo_surface_attributes_t *attributes,
+				    double			xc,
+				    double			yc);
+
+cairo_private cairo_status_t
+_cairo_xlib_surface_draw_image (cairo_xlib_surface_t   *surface,
+				cairo_image_surface_t  *image,
+				int                    src_x,
+				int                    src_y,
+				int                    width,
+				int                    height,
+				int                    dst_x,
+				int                    dst_y);
+
+cairo_private cairo_surface_t *
+_cairo_xlib_source_create_for_pattern (cairo_surface_t *dst,
+				       const cairo_pattern_t *pattern,
+				       cairo_bool_t is_mask,
+				       const cairo_rectangle_int_t *extents,
+				       const cairo_rectangle_int_t *sample,
+				       int *src_x, int *src_y);
+
+cairo_private void
+_cairo_xlib_font_close (cairo_xlib_font_t *font);
+
+#define CAIRO_RENDER_AT_LEAST(surface, major, minor)	\
+	(((surface)->render_major > major) ||			\
+	 (((surface)->render_major == major) && ((surface)->render_minor >= minor)))
+
+#define CAIRO_RENDER_HAS_CREATE_PICTURE(surface)		CAIRO_RENDER_AT_LEAST((surface), 0, 0)
+#define CAIRO_RENDER_HAS_COMPOSITE(surface)		CAIRO_RENDER_AT_LEAST((surface), 0, 0)
+#define CAIRO_RENDER_HAS_COMPOSITE_TEXT(surface)	CAIRO_RENDER_AT_LEAST((surface), 0, 0)
+
+#define CAIRO_RENDER_HAS_FILL_RECTANGLES(surface)		CAIRO_RENDER_AT_LEAST((surface), 0, 1)
+
+#define CAIRO_RENDER_HAS_DISJOINT(surface)			CAIRO_RENDER_AT_LEAST((surface), 0, 2)
+#define CAIRO_RENDER_HAS_CONJOINT(surface)			CAIRO_RENDER_AT_LEAST((surface), 0, 2)
+
+#define CAIRO_RENDER_HAS_TRAPEZOIDS(surface)		CAIRO_RENDER_AT_LEAST((surface), 0, 4)
+#define CAIRO_RENDER_HAS_TRIANGLES(surface)		CAIRO_RENDER_AT_LEAST((surface), 0, 4)
+#define CAIRO_RENDER_HAS_TRISTRIP(surface)			CAIRO_RENDER_AT_LEAST((surface), 0, 4)
+#define CAIRO_RENDER_HAS_TRIFAN(surface)			CAIRO_RENDER_AT_LEAST((surface), 0, 4)
+
+#define CAIRO_RENDER_HAS_PICTURE_TRANSFORM(surface)	CAIRO_RENDER_AT_LEAST((surface), 0, 6)
+#define CAIRO_RENDER_HAS_FILTERS(surface)	CAIRO_RENDER_AT_LEAST((surface), 0, 6)
+#define CAIRO_RENDER_HAS_FILTER_GOOD(surface) FALSE
+#define CAIRO_RENDER_HAS_FILTER_BEST(surface) FALSE
+
+#define CAIRO_RENDER_HAS_EXTENDED_REPEAT(surface)	CAIRO_RENDER_AT_LEAST((surface), 0, 10)
+#define CAIRO_RENDER_HAS_GRADIENTS(surface)	CAIRO_RENDER_AT_LEAST((surface), 0, 10)
+
+#define CAIRO_RENDER_HAS_PDF_OPERATORS(surface)	CAIRO_RENDER_AT_LEAST((surface), 0, 11)
+
+#define CAIRO_RENDER_SUPPORTS_OPERATOR(surface, op)	\
+     ((op) <= CAIRO_OPERATOR_SATURATE ||			\
+      (CAIRO_RENDER_HAS_PDF_OPERATORS(surface) &&	\
+       (op) <= CAIRO_OPERATOR_HSL_LUMINOSITY))
+
+/*
+ * Return whether two xlib surfaces share the same
+ * screen.  Both core and Render drawing require this
+ * when using multiple drawables in an operation.
+ */
+static inline cairo_bool_t
+_cairo_xlib_surface_same_screen (cairo_xlib_surface_t *dst,
+				 cairo_xlib_surface_t *src)
+{
+    return dst->screen == src->screen;
+}
+
+cairo_private cairo_int_status_t
+_cairo_xlib_core_fill_boxes (cairo_xlib_surface_t    *dst,
+			     const cairo_color_t     *color,
+			     cairo_boxes_t	    *boxes);
+
+cairo_private cairo_int_status_t
+_cairo_xlib_core_fill_rectangles (cairo_xlib_surface_t    *dst,
+				  const cairo_color_t     *color,
+				  int num_rects,
+				  cairo_rectangle_int_t *rects);
+
+static inline void
+_cairo_xlib_surface_put_gc (cairo_xlib_display_t *display,
+                            cairo_xlib_surface_t *surface,
+                            GC                    gc)
+{
+    _cairo_xlib_screen_put_gc (display,
+                               surface->screen,
+			       surface->depth,
+			       gc);
+}
+
+cairo_private cairo_surface_t *
+_cairo_xlib_surface_create_similar_shm (void *surface,
+					cairo_format_t format,
+					int width, int height);
+
+cairo_private cairo_surface_t *
+_cairo_xlib_surface_get_shm (cairo_xlib_surface_t *surface,
+			     cairo_bool_t overwrite);
+
+cairo_private cairo_int_status_t
+_cairo_xlib_surface_put_shm (cairo_xlib_surface_t *surface);
+
+cairo_private cairo_surface_t *
+_cairo_xlib_surface_create_shm (cairo_xlib_surface_t *other,
+				pixman_format_code_t format,
+				int width, int height);
+
+cairo_private cairo_surface_t *
+_cairo_xlib_surface_create_shm__image (cairo_xlib_surface_t *surface,
+				       pixman_format_code_t format,
+				       int width, int height);
+
+cairo_private void
+_cairo_xlib_shm_surface_get_ximage (cairo_surface_t *surface,
+				    XImage *ximage);
+
+cairo_private void *
+_cairo_xlib_shm_surface_get_obdata (cairo_surface_t *surface);
+
+cairo_private void
+_cairo_xlib_shm_surface_mark_active (cairo_surface_t *shm);
+
+cairo_private cairo_bool_t
+_cairo_xlib_shm_surface_is_active (cairo_surface_t *surface);
+
+cairo_private cairo_bool_t
+_cairo_xlib_shm_surface_is_idle (cairo_surface_t *surface);
+
+cairo_private Pixmap
+_cairo_xlib_shm_surface_get_pixmap (cairo_surface_t *surface);
+
+cairo_private XRenderPictFormat *
+_cairo_xlib_shm_surface_get_xrender_format (cairo_surface_t *surface);
+
+cairo_private pixman_format_code_t
+_pixman_format_for_xlib_surface (cairo_xlib_surface_t *surface);
+
+#endif /* CAIRO_XLIB_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-render-compositor.c b/libs/cairo-1.16.0/src/cairo-xlib-render-compositor.c
new file mode 100644
index 0000000..0db59a8
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-render-compositor.c
@@ -0,0 +1,2014 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-damage-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-pattern-private.h"
+#include "cairo-pixman-private.h"
+#include "cairo-traps-private.h"
+#include "cairo-tristrip-private.h"
+
+static cairo_int_status_t
+check_composite (const cairo_composite_rectangles_t *extents)
+{
+    cairo_xlib_display_t *display = ((cairo_xlib_surface_t *)extents->surface)->display;
+
+    if (! CAIRO_RENDER_SUPPORTS_OPERATOR (display, extents->op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+acquire (void *abstract_dst)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+    cairo_int_status_t status;
+
+    status = _cairo_xlib_display_acquire (dst->base.device, &dst->display);
+    if (unlikely (status))
+        return status;
+
+    dst->dpy = dst->display->display;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+release (void *abstract_dst)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+
+    cairo_device_release (&dst->display->base);
+    dst->dpy = NULL;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+set_clip_region (void *_surface,
+		 cairo_region_t *region)
+{
+    cairo_xlib_surface_t *surface = _surface;
+
+    _cairo_xlib_surface_ensure_picture (surface);
+
+    if (region != NULL) {
+	XRectangle stack_rects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	XRectangle *rects = stack_rects;
+	int n_rects, i;
+
+	n_rects = cairo_region_num_rectangles (region);
+	if (n_rects > ARRAY_LENGTH (stack_rects)) {
+	    rects = _cairo_malloc_ab (n_rects, sizeof (XRectangle));
+	    if (unlikely (rects == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+	for (i = 0; i < n_rects; i++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (region, i, &rect);
+
+	    rects[i].x = rect.x;
+	    rects[i].y = rect.y;
+	    rects[i].width  = rect.width;
+	    rects[i].height = rect.height;
+	}
+	XRenderSetPictureClipRectangles (surface->dpy,
+					 surface->picture,
+					 0, 0,
+					 rects, n_rects);
+	if (rects != stack_rects)
+	    free (rects);
+    } else {
+	XRenderPictureAttributes pa;
+	pa.clip_mask = None;
+	XRenderChangePicture (surface->dpy,
+			      surface->picture,
+			      CPClipMask, &pa);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+copy_image_boxes (void *_dst,
+		  cairo_image_surface_t *image,
+		  cairo_boxes_t *boxes,
+		  int dx, int dy)
+{
+    cairo_xlib_surface_t *dst = _dst;
+    struct _cairo_boxes_chunk *chunk;
+    cairo_int_status_t status;
+    Pixmap src;
+    GC gc;
+    int i, j;
+
+    assert (image->depth == dst->depth);
+
+    status = acquire (dst);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xlib_surface_get_gc (dst->display, dst, &gc);
+    if (unlikely (status)) {
+	release (dst);
+	return status;
+    }
+
+    src = _cairo_xlib_shm_surface_get_pixmap (&image->base);
+    if (boxes->num_boxes == 1) {
+	int x1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.x);
+	int y1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.y);
+	int x2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.x);
+	int y2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.y);
+
+	_cairo_xlib_shm_surface_mark_active (&image->base);
+	XCopyArea (dst->dpy, src, dst->drawable, gc,
+		   x1 + dx, y1 + dy,
+		   x2 - x1, y2 - y1,
+		   x1,      y1);
+    } else {
+	XRectangle stack_rects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	XRectangle *rects = stack_rects;
+
+	if (boxes->num_boxes > ARRAY_LENGTH (stack_rects)) {
+	    rects = _cairo_malloc_ab (boxes->num_boxes, sizeof (XRectangle));
+	    if (unlikely (rects == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	j = 0;
+	for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+		if (x2 > x1 && y2 > y1) {
+		    rects[j].x = x1;
+		    rects[j].y = y1;
+		    rects[j].width  = x2 - x1;
+		    rects[j].height = y2 - y1;
+		    j++;
+		}
+	    }
+	}
+
+	XSetClipRectangles (dst->dpy, gc, 0, 0, rects, j, Unsorted);
+	_cairo_xlib_shm_surface_mark_active (&image->base);
+	XCopyArea (dst->dpy, src, dst->drawable, gc,
+		   0, 0, image->width, image->height, -dx, -dy);
+	XSetClipMask (dst->dpy, gc, None);
+
+	if (rects != stack_rects)
+	    free (rects);
+    }
+
+    _cairo_xlib_surface_put_gc (dst->display, dst, gc);
+    release (dst);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+boxes_cover_surface (cairo_boxes_t *boxes,
+		     cairo_xlib_surface_t *surface)
+{
+    cairo_box_t *b;
+
+    if (boxes->num_boxes != 1)
+	    return FALSE;
+
+    b = &boxes->chunks.base[0];
+
+    if (_cairo_fixed_integer_part (b->p1.x) > 0 ||
+	_cairo_fixed_integer_part (b->p1.y) > 0)
+	return FALSE;
+
+    if (_cairo_fixed_integer_part (b->p2.x) < surface->width ||
+	_cairo_fixed_integer_part (b->p2.y) < surface->height)
+	return FALSE;
+
+    return TRUE;
+}
+
+static cairo_int_status_t
+draw_image_boxes (void *_dst,
+		  cairo_image_surface_t *image,
+		  cairo_boxes_t *boxes,
+		  int dx, int dy)
+{
+    cairo_xlib_surface_t *dst = _dst;
+    struct _cairo_boxes_chunk *chunk;
+    cairo_image_surface_t *shm = NULL;
+    cairo_int_status_t status;
+    int i;
+
+    if (image->base.device == dst->base.device) {
+	if (image->depth != dst->depth)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	if (_cairo_xlib_shm_surface_get_pixmap (&image->base))
+	    return copy_image_boxes (dst, image, boxes, dx, dy);
+
+	goto draw_image_boxes;
+    }
+
+    if (boxes_cover_surface (boxes, dst))
+	shm = (cairo_image_surface_t *) _cairo_xlib_surface_get_shm (dst, TRUE);
+    if (shm) {
+	for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		cairo_box_t *b = &chunk->base[i];
+		cairo_rectangle_int_t r;
+
+		r.x = _cairo_fixed_integer_part (b->p1.x);
+		r.y = _cairo_fixed_integer_part (b->p1.y);
+		r.width = _cairo_fixed_integer_part (b->p2.x) - r.x;
+		r.height = _cairo_fixed_integer_part (b->p2.y) - r.y;
+
+		if (shm->pixman_format != image->pixman_format ||
+		    ! pixman_blt ((uint32_t *)image->data, (uint32_t *)shm->data,
+				  image->stride / sizeof (uint32_t),
+				  shm->stride / sizeof (uint32_t),
+				  PIXMAN_FORMAT_BPP (image->pixman_format),
+				  PIXMAN_FORMAT_BPP (shm->pixman_format),
+				  r.x + dx, r.y + dy,
+				  r.x, r.y,
+				  r.width, r.height))
+		{
+		    pixman_image_composite32 (PIXMAN_OP_SRC,
+					      image->pixman_image, NULL, shm->pixman_image,
+					      r.x + dx, r.y + dy,
+					      0, 0,
+					      r.x, r.y,
+					      r.width, r.height);
+		}
+
+		shm->base.damage =
+		    _cairo_damage_add_rectangle (shm->base.damage, &r);
+	    }
+	}
+	dst->base.is_clear = FALSE;
+	dst->fallback++;
+	dst->base.serial++;
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    if (image->depth == dst->depth &&
+	((cairo_xlib_display_t *)dst->display)->shm) {
+	cairo_box_t extents;
+	cairo_rectangle_int_t r;
+
+	_cairo_boxes_extents (boxes, &extents);
+	_cairo_box_round_to_rectangle (&extents, &r);
+
+	shm = (cairo_image_surface_t *)
+	    _cairo_xlib_surface_create_shm (dst, image->pixman_format,
+					    r.width, r.height);
+	if (shm) {
+	    int tx = -r.x, ty = -r.y;
+
+	    assert (shm->pixman_format == image->pixman_format);
+	    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+		for (i = 0; i < chunk->count; i++) {
+		    cairo_box_t *b = &chunk->base[i];
+
+		    r.x = _cairo_fixed_integer_part (b->p1.x);
+		    r.y = _cairo_fixed_integer_part (b->p1.y);
+		    r.width  = _cairo_fixed_integer_part (b->p2.x) - r.x;
+		    r.height = _cairo_fixed_integer_part (b->p2.y) - r.y;
+
+		    if (! pixman_blt ((uint32_t *)image->data, (uint32_t *)shm->data,
+				      image->stride / sizeof (uint32_t),
+				      shm->stride / sizeof (uint32_t),
+				      PIXMAN_FORMAT_BPP (image->pixman_format),
+				      PIXMAN_FORMAT_BPP (shm->pixman_format),
+				      r.x + dx, r.y + dy,
+				      r.x + tx, r.y + ty,
+				      r.width, r.height))
+		    {
+			pixman_image_composite32 (PIXMAN_OP_SRC,
+						  image->pixman_image, NULL, shm->pixman_image,
+						  r.x + dx, r.y + dy,
+						  0, 0,
+						  r.x + tx, r.y + ty,
+						  r.width, r.height);
+		    }
+		}
+	    }
+
+	    dx = tx;
+	    dy = ty;
+	    image = shm;
+
+	    if (_cairo_xlib_shm_surface_get_pixmap (&image->base)) {
+		status = copy_image_boxes (dst, image, boxes, dx, dy);
+		if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+		    goto out;
+	    }
+	}
+    }
+
+draw_image_boxes:
+    status = CAIRO_STATUS_SUCCESS;
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    cairo_box_t *b = &chunk->base[i];
+	    int x1 = _cairo_fixed_integer_part (b->p1.x);
+	    int y1 = _cairo_fixed_integer_part (b->p1.y);
+	    int x2 = _cairo_fixed_integer_part (b->p2.x);
+	    int y2 = _cairo_fixed_integer_part (b->p2.y);
+	    if (_cairo_xlib_surface_draw_image (dst, image,
+						x1 + dx, y1 + dy,
+						x2 - x1, y2 - y1,
+						x1, y1)) {
+		status = CAIRO_INT_STATUS_UNSUPPORTED;
+		goto out;
+	    }
+	}
+    }
+
+out:
+    cairo_surface_destroy (&shm->base);
+    return status;
+}
+
+static cairo_int_status_t
+copy_boxes (void *_dst,
+	    cairo_surface_t *_src,
+	    cairo_boxes_t *boxes,
+	    const cairo_rectangle_int_t *extents,
+	    int dx, int dy)
+{
+    cairo_xlib_surface_t *dst = _dst;
+    cairo_xlib_surface_t *src = (cairo_xlib_surface_t *)_src;
+    struct _cairo_boxes_chunk *chunk;
+    cairo_int_status_t status;
+    GC gc;
+    Drawable d;
+    int i, j;
+
+    if (! _cairo_xlib_surface_same_screen  (dst, src))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (dst->depth != src->depth)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = acquire (dst);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xlib_surface_get_gc (dst->display, dst, &gc);
+    if (unlikely (status)) {
+	release (dst);
+	return status;
+    }
+
+    if (src->fallback && src->shm->damage->dirty) {
+	assert (src != dst);
+	d = _cairo_xlib_shm_surface_get_pixmap (src->shm);
+	assert (d != 0);
+    } else {
+	if (! src->owns_pixmap) {
+	    XGCValues gcv;
+
+	    gcv.subwindow_mode = IncludeInferiors;
+	    XChangeGC (dst->display->display, gc, GCSubwindowMode, &gcv);
+	}
+	d = src->drawable;
+    }
+
+    if (boxes->num_boxes == 1) {
+	int x1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.x);
+	int y1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.y);
+	int x2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.x);
+	int y2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.y);
+
+	XCopyArea (dst->dpy, d, dst->drawable, gc,
+		   x1 + dx, y1 + dy,
+		   x2 - x1, y2 - y1,
+		   x1,      y1);
+    } else {
+	/* We can only have a single control for subwindow_mode on the
+	 * GC. If we have a Window destination, we need to set ClipByChildren,
+	 * but if we have a Window source, we need IncludeInferiors. If we have
+	 * both a Window destination and source, we must fallback. There is
+	 * no convenient way to detect if a drawable is a Pixmap or Window,
+	 * therefore we can only rely on those surfaces that we created
+	 * ourselves to be Pixmaps, and treat everything else as a potential
+	 * Window.
+	 */
+	if (src == dst || (!src->owns_pixmap && !dst->owns_pixmap)) {
+	    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+		for (i = 0; i < chunk->count; i++) {
+		    int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		    int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		    int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		    int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+		    XCopyArea (dst->dpy, d, dst->drawable, gc,
+			       x1 + dx, y1 + dy,
+			       x2 - x1, y2 - y1,
+			       x1,      y1);
+		}
+	    }
+	} else {
+	    XRectangle stack_rects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	    XRectangle *rects = stack_rects;
+
+	    if (boxes->num_boxes > ARRAY_LENGTH (stack_rects)) {
+		rects = _cairo_malloc_ab (boxes->num_boxes, sizeof (XRectangle));
+		if (unlikely (rects == NULL))
+		    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    }
+
+	    j = 0;
+	    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+		for (i = 0; i < chunk->count; i++) {
+		    int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		    int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		    int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		    int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+		    rects[j].x = x1;
+		    rects[j].y = y1;
+		    rects[j].width  = x2 - x1;
+		    rects[j].height = y2 - y1;
+		    j++;
+		}
+	    }
+	    assert (j == boxes->num_boxes);
+
+	    XSetClipRectangles (dst->dpy, gc, 0, 0, rects, j, Unsorted);
+
+	    XCopyArea (dst->dpy, d, dst->drawable, gc,
+		       extents->x + dx, extents->y + dy,
+		       extents->width,  extents->height,
+		       extents->x,      extents->y);
+
+	    XSetClipMask (dst->dpy, gc, None);
+
+	    if (rects != stack_rects)
+		free (rects);
+	}
+    }
+
+    if (src->fallback && src->shm->damage->dirty) {
+	_cairo_xlib_shm_surface_mark_active (src->shm);
+    } else if (! src->owns_pixmap) {
+	XGCValues gcv;
+
+	gcv.subwindow_mode = ClipByChildren;
+	XChangeGC (dst->display->display, gc, GCSubwindowMode, &gcv);
+    }
+
+    _cairo_xlib_surface_put_gc (dst->display, dst, gc);
+    release (dst);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static int
+_render_operator (cairo_operator_t op)
+{
+    switch (op) {
+    case CAIRO_OPERATOR_CLEAR:
+	return PictOpClear;
+
+    case CAIRO_OPERATOR_SOURCE:
+	return PictOpSrc;
+    case CAIRO_OPERATOR_OVER:
+	return PictOpOver;
+    case CAIRO_OPERATOR_IN:
+	return PictOpIn;
+    case CAIRO_OPERATOR_OUT:
+	return PictOpOut;
+    case CAIRO_OPERATOR_ATOP:
+	return PictOpAtop;
+
+    case CAIRO_OPERATOR_DEST:
+	return PictOpDst;
+    case CAIRO_OPERATOR_DEST_OVER:
+	return PictOpOverReverse;
+    case CAIRO_OPERATOR_DEST_IN:
+	return PictOpInReverse;
+    case CAIRO_OPERATOR_DEST_OUT:
+	return PictOpOutReverse;
+    case CAIRO_OPERATOR_DEST_ATOP:
+	return PictOpAtopReverse;
+
+    case CAIRO_OPERATOR_XOR:
+	return PictOpXor;
+    case CAIRO_OPERATOR_ADD:
+	return PictOpAdd;
+    case CAIRO_OPERATOR_SATURATE:
+	return PictOpSaturate;
+
+    case CAIRO_OPERATOR_MULTIPLY:
+	return PictOpMultiply;
+    case CAIRO_OPERATOR_SCREEN:
+	return PictOpScreen;
+    case CAIRO_OPERATOR_OVERLAY:
+	return PictOpOverlay;
+    case CAIRO_OPERATOR_DARKEN:
+	return PictOpDarken;
+    case CAIRO_OPERATOR_LIGHTEN:
+	return PictOpLighten;
+    case CAIRO_OPERATOR_COLOR_DODGE:
+	return PictOpColorDodge;
+    case CAIRO_OPERATOR_COLOR_BURN:
+	return PictOpColorBurn;
+    case CAIRO_OPERATOR_HARD_LIGHT:
+	return PictOpHardLight;
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+	return PictOpSoftLight;
+    case CAIRO_OPERATOR_DIFFERENCE:
+	return PictOpDifference;
+    case CAIRO_OPERATOR_EXCLUSION:
+	return PictOpExclusion;
+    case CAIRO_OPERATOR_HSL_HUE:
+	return PictOpHSLHue;
+    case CAIRO_OPERATOR_HSL_SATURATION:
+	return PictOpHSLSaturation;
+    case CAIRO_OPERATOR_HSL_COLOR:
+	return PictOpHSLColor;
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return PictOpHSLLuminosity;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return PictOpOver;
+    }
+}
+
+static cairo_bool_t
+fill_reduces_to_source (cairo_operator_t op,
+			const cairo_color_t *color,
+			cairo_xlib_surface_t *dst)
+{
+    if (dst->base.is_clear || CAIRO_COLOR_IS_OPAQUE (color)) {
+	if (op == CAIRO_OPERATOR_OVER)
+	    return TRUE;
+	if (op == CAIRO_OPERATOR_ADD)
+	    return (dst->base.content & CAIRO_CONTENT_COLOR) == 0;
+    }
+
+    return FALSE;
+}
+
+static cairo_int_status_t
+fill_rectangles (void				*abstract_surface,
+		 cairo_operator_t		 op,
+		 const cairo_color_t		*color,
+		 cairo_rectangle_int_t		*rects,
+		 int				 num_rects)
+{
+    cairo_xlib_surface_t *dst = abstract_surface;
+    XRenderColor render_color;
+    int i;
+
+    //X_DEBUG ((display->display, "fill_rectangles (dst=%x)", (unsigned int) surface->drawable));
+
+    if (fill_reduces_to_source (op, color, dst))
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (!CAIRO_RENDER_HAS_FILL_RECTANGLES(dst->display)) {
+	cairo_int_status_t status;
+
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	if (op == CAIRO_OPERATOR_SOURCE)
+	    status = _cairo_xlib_core_fill_rectangles (dst, color, num_rects, rects);
+	return status;
+    }
+
+    render_color.red   = color->red_short;
+    render_color.green = color->green_short;
+    render_color.blue  = color->blue_short;
+    render_color.alpha = color->alpha_short;
+
+    _cairo_xlib_surface_ensure_picture (dst);
+    if (num_rects == 1) {
+	/* Take advantage of the protocol compaction that libXrender performs
+	 * to amalgamate sequences of XRenderFillRectangle().
+	 */
+	XRenderFillRectangle (dst->dpy,
+			      _render_operator (op),
+			      dst->picture,
+			      &render_color,
+			      rects->x, rects->y,
+			      rects->width, rects->height);
+    } else {
+	XRectangle stack_xrects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	XRectangle *xrects = stack_xrects;
+
+	if (num_rects > ARRAY_LENGTH (stack_xrects)) {
+	    xrects = _cairo_malloc_ab (num_rects, sizeof (XRectangle));
+	    if (unlikely (xrects == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	for (i = 0; i < num_rects; i++) {
+	    xrects[i].x = rects[i].x;
+	    xrects[i].y = rects[i].y;
+	    xrects[i].width  = rects[i].width;
+	    xrects[i].height = rects[i].height;
+	}
+
+	XRenderFillRectangles (dst->dpy,
+			       _render_operator (op),
+			       dst->picture,
+			       &render_color, xrects, num_rects);
+
+	if (xrects != stack_xrects)
+	    free (xrects);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+fill_boxes (void		*abstract_surface,
+	    cairo_operator_t	 op,
+	    const cairo_color_t	*color,
+	    cairo_boxes_t	*boxes)
+{
+    cairo_xlib_surface_t *dst = abstract_surface;
+    XRenderColor render_color;
+
+    if (fill_reduces_to_source (op, color, dst))
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (!CAIRO_RENDER_HAS_FILL_RECTANGLES(dst->display)) {
+	cairo_int_status_t status;
+
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	if (op == CAIRO_OPERATOR_SOURCE)
+	    status = _cairo_xlib_core_fill_boxes (dst, color, boxes);
+	return status;
+    }
+
+    render_color.red   = color->red_short;
+    render_color.green = color->green_short;
+    render_color.blue  = color->blue_short;
+    render_color.alpha = color->alpha_short;
+
+    _cairo_xlib_surface_ensure_picture (dst);
+    if (boxes->num_boxes == 1) {
+	int x1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.x);
+	int y1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.y);
+	int x2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.x);
+	int y2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.y);
+
+	/* Take advantage of the protocol compaction that libXrender performs
+	 * to amalgamate sequences of XRenderFillRectangle().
+	 */
+	XRenderFillRectangle (dst->dpy,
+			      _render_operator (op),
+			      dst->picture,
+			      &render_color,
+			      x1, y1,
+			      x2 - x1, y2 - y1);
+    } else {
+	XRectangle stack_xrects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	XRectangle *xrects = stack_xrects;
+	struct _cairo_boxes_chunk *chunk;
+	int i, j;
+
+	if (boxes->num_boxes > ARRAY_LENGTH (stack_xrects)) {
+	    xrects = _cairo_malloc_ab (boxes->num_boxes, sizeof (XRectangle));
+	    if (unlikely (xrects == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	j = 0;
+	for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+		xrects[j].x = x1;
+		xrects[j].y = y1;
+		xrects[j].width  = x2 - x1;
+		xrects[j].height = y2 - y1;
+		j++;
+	    }
+	}
+
+	XRenderFillRectangles (dst->dpy,
+			       _render_operator (op),
+			       dst->picture,
+			       &render_color, xrects, j);
+
+	if (xrects != stack_xrects)
+	    free (xrects);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if 0
+check_composite ()
+    operation = _categorize_composite_operation (dst, op, src_pattern,
+						 mask_pattern != NULL);
+    if (operation == DO_UNSUPPORTED)
+	return UNSUPPORTED ("unsupported operation");
+
+    //X_DEBUG ((display->display, "composite (dst=%x)", (unsigned int) dst->drawable));
+
+    operation = _recategorize_composite_operation (dst, op, src, &src_attr,
+						   mask_pattern != NULL);
+    if (operation == DO_UNSUPPORTED) {
+	status = UNSUPPORTED ("unsupported operation");
+	goto BAIL;
+    }
+#endif
+
+static cairo_int_status_t
+composite (void *abstract_dst,
+	   cairo_operator_t	op,
+	   cairo_surface_t	*abstract_src,
+	   cairo_surface_t	*abstract_mask,
+	   int			src_x,
+	   int			src_y,
+	   int			mask_x,
+	   int			mask_y,
+	   int			dst_x,
+	   int			dst_y,
+	   unsigned int		width,
+	   unsigned int		height)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+    cairo_xlib_source_t *src = (cairo_xlib_source_t *)abstract_src;
+
+    op = _render_operator (op);
+
+    _cairo_xlib_surface_ensure_picture (dst);
+    if (abstract_mask) {
+	cairo_xlib_source_t *mask = (cairo_xlib_source_t *)abstract_mask;
+
+	XRenderComposite (dst->dpy, op,
+			  src->picture, mask->picture, dst->picture,
+			  src_x,  src_y,
+			  mask_x, mask_y,
+			  dst_x,  dst_y,
+			  width,  height);
+    } else {
+	XRenderComposite (dst->dpy, op,
+			  src->picture, 0, dst->picture,
+			  src_x, src_y,
+			  0, 0,
+			  dst_x, dst_y,
+			  width, height);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+lerp (void *abstract_dst,
+      cairo_surface_t	*abstract_src,
+      cairo_surface_t	*abstract_mask,
+      int			src_x,
+      int			src_y,
+      int			mask_x,
+      int			mask_y,
+      int			dst_x,
+      int			dst_y,
+      unsigned int		width,
+      unsigned int		height)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+    cairo_xlib_source_t *src = (cairo_xlib_source_t *)abstract_src;
+    cairo_xlib_source_t *mask = (cairo_xlib_source_t *)abstract_mask;
+
+    _cairo_xlib_surface_ensure_picture (dst);
+    XRenderComposite (dst->dpy, PictOpOutReverse,
+		      mask->picture, None, dst->picture,
+		      mask_x, mask_y,
+		      0,      0,
+		      dst_x,  dst_y,
+		      width,  height);
+    XRenderComposite (dst->dpy, PictOpAdd,
+		      src->picture, mask->picture, dst->picture,
+		      src_x,  src_y,
+		      mask_x, mask_y,
+		      dst_x,  dst_y,
+		      width,  height);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_boxes (void			*abstract_dst,
+		 cairo_operator_t	 op,
+		 cairo_surface_t	*abstract_src,
+		 cairo_surface_t	*abstract_mask,
+		 int			src_x,
+		 int			src_y,
+		 int			mask_x,
+		 int			mask_y,
+		 int			dst_x,
+		 int			dst_y,
+		 cairo_boxes_t		*boxes,
+		 const cairo_rectangle_int_t  *extents)
+{
+    cairo_xlib_surface_t *dst = abstract_dst;
+    Picture src = ((cairo_xlib_source_t *)abstract_src)->picture;
+    Picture mask = abstract_mask ? ((cairo_xlib_source_t *)abstract_mask)->picture : 0;
+    XRectangle stack_rects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+    XRectangle *rects = stack_rects;
+    struct _cairo_boxes_chunk *chunk;
+    int i, j;
+
+    op = _render_operator (op);
+    _cairo_xlib_surface_ensure_picture (dst);
+    if (boxes->num_boxes == 1) {
+	int x1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.x);
+	int y1 = _cairo_fixed_integer_part (boxes->chunks.base[0].p1.y);
+	int x2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.x);
+	int y2 = _cairo_fixed_integer_part (boxes->chunks.base[0].p2.y);
+
+	XRenderComposite (dst->dpy, op,
+			  src, mask, dst->picture,
+			  x1 + src_x,	y1 + src_y,
+			  x1 + mask_x,	y1 + mask_y,
+			  x1 - dst_x,	y1 - dst_y,
+			  x2 - x1,	y2 - y1);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (boxes->num_boxes > ARRAY_LENGTH (stack_rects)) {
+	rects = _cairo_malloc_ab (boxes->num_boxes, sizeof (XRectangle));
+	if (unlikely (rects == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    j = 0;
+    for (chunk = &boxes->chunks; chunk; chunk = chunk->next) {
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+	    int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+	    int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+	    int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+	    rects[j].x = x1 - dst_x;
+	    rects[j].y = y1 - dst_y;
+	    rects[j].width  = x2 - x1;
+	    rects[j].height = y2 - y1;
+	    j++;
+	}
+    }
+    assert (j == boxes->num_boxes);
+
+    XRenderSetPictureClipRectangles (dst->dpy,
+				     dst->picture,
+				     0, 0,
+				     rects, j);
+    if (rects != stack_rects)
+	free (rects);
+
+    XRenderComposite (dst->dpy, op,
+		      src, mask, dst->picture,
+		      extents->x + src_x,  extents->y + src_y,
+		      extents->x + mask_x, extents->y + mask_y,
+		      extents->x - dst_x,  extents->y - dst_y,
+		      extents->width,      extents->height);
+
+    set_clip_region (dst, NULL);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* font rendering */
+
+void
+_cairo_xlib_font_close (cairo_xlib_font_t *priv)
+{
+    cairo_xlib_display_t *display = (cairo_xlib_display_t *)priv->base.key;
+    int i;
+
+    /* XXX All I really want is to do is zap my glyphs... */
+    _cairo_scaled_font_reset_cache (priv->font);
+
+    for (i = 0; i < NUM_GLYPHSETS; i++) {
+	cairo_xlib_font_glyphset_t *info;
+
+	info = &priv->glyphset[i];
+	if (info->glyphset)
+	    XRenderFreeGlyphSet (display->display, info->glyphset);
+    }
+
+    /* XXX locking */
+    cairo_list_del (&priv->link);
+    cairo_list_del (&priv->base.link);
+    free (priv);
+}
+
+static void
+_cairo_xlib_font_fini (cairo_scaled_font_private_t *abstract_private,
+		       cairo_scaled_font_t *font)
+{
+    cairo_xlib_font_t *priv = (cairo_xlib_font_t *) abstract_private;
+    cairo_status_t status;
+    cairo_xlib_display_t *display;
+    int i;
+
+    cairo_list_del (&priv->base.link);
+    cairo_list_del (&priv->link);
+
+    status = _cairo_xlib_display_acquire (priv->device, &display);
+    if (unlikely (status)) /* this should be impossible but leak just in case */
+	goto BAIL;
+
+    for (i = 0; i < NUM_GLYPHSETS; i++) {
+	cairo_xlib_font_glyphset_t *info;
+
+	info = &priv->glyphset[i];
+	if (info->glyphset)
+	    XRenderFreeGlyphSet (display->display, info->glyphset);
+    }
+
+    cairo_device_release (&display->base);
+BAIL:
+    cairo_device_destroy (priv->device);
+    free (priv);
+}
+
+static cairo_xlib_font_t *
+_cairo_xlib_font_create (cairo_xlib_display_t *display,
+			 cairo_scaled_font_t  *font)
+{
+    cairo_xlib_font_t *priv;
+    int i;
+
+    priv = _cairo_malloc (sizeof (cairo_xlib_font_t));
+    if (unlikely (priv == NULL))
+	return NULL;
+
+    _cairo_scaled_font_attach_private (font, &priv->base, display,
+				       _cairo_xlib_font_fini);
+
+    priv->device = cairo_device_reference (&display->base);
+    priv->font = font;
+    cairo_list_add (&priv->link, &display->fonts);
+
+    for (i = 0; i < NUM_GLYPHSETS; i++) {
+	cairo_xlib_font_glyphset_t *info = &priv->glyphset[i];
+	switch (i) {
+	case GLYPHSET_INDEX_ARGB32: info->format = CAIRO_FORMAT_ARGB32; break;
+	case GLYPHSET_INDEX_A8:     info->format = CAIRO_FORMAT_A8;     break;
+	case GLYPHSET_INDEX_A1:     info->format = CAIRO_FORMAT_A1;     break;
+	default:                    ASSERT_NOT_REACHED;                          break;
+	}
+	info->xrender_format = NULL;
+	info->glyphset = None;
+	info->to_free.count = 0;
+    }
+
+    return priv;
+}
+
+static int
+_cairo_xlib_get_glyphset_index_for_format (cairo_format_t format)
+{
+    if (format == CAIRO_FORMAT_A8)
+        return GLYPHSET_INDEX_A8;
+    if (format == CAIRO_FORMAT_A1)
+        return GLYPHSET_INDEX_A1;
+
+    assert (format == CAIRO_FORMAT_ARGB32);
+    return GLYPHSET_INDEX_ARGB32;
+}
+
+static inline cairo_xlib_font_t *
+_cairo_xlib_font_get (const cairo_xlib_display_t *display,
+		      cairo_scaled_font_t *font)
+{
+    return (cairo_xlib_font_t *)_cairo_scaled_font_find_private (font, display);
+}
+
+typedef struct {
+    cairo_scaled_glyph_private_t base;
+
+
+    cairo_xlib_font_glyphset_t *glyphset;
+} cairo_xlib_glyph_private_t;
+
+static void
+_cairo_xlib_glyph_fini (cairo_scaled_glyph_private_t *glyph_private,
+			cairo_scaled_glyph_t *glyph,
+			cairo_scaled_font_t  *font)
+{
+    cairo_xlib_glyph_private_t *priv = (cairo_xlib_glyph_private_t *)glyph_private;
+
+    if (! font->finished) {
+	cairo_xlib_font_t *font_private;
+	struct _cairo_xlib_font_glyphset_free_glyphs *to_free;
+	cairo_xlib_font_glyphset_t *info;
+
+	font_private = _cairo_xlib_font_get (glyph_private->key, font);
+	assert (font_private);
+
+	info = priv->glyphset;
+	to_free = &info->to_free;
+	if (to_free->count == ARRAY_LENGTH (to_free->indices)) {
+	    cairo_xlib_display_t *display;
+
+	    if (_cairo_xlib_display_acquire (font_private->device,
+					     &display) == CAIRO_STATUS_SUCCESS) {
+		XRenderFreeGlyphs (display->display,
+				   info->glyphset,
+				   to_free->indices,
+				   to_free->count);
+		cairo_device_release (&display->base);
+	    }
+
+	    to_free->count = 0;
+	}
+
+	to_free->indices[to_free->count++] =
+	    _cairo_scaled_glyph_index (glyph);
+    }
+
+    cairo_list_del (&glyph_private->link);
+    free (glyph_private);
+}
+
+static cairo_status_t
+_cairo_xlib_glyph_attach (cairo_xlib_display_t	*display,
+			  cairo_scaled_glyph_t	*glyph,
+			  cairo_xlib_font_glyphset_t *info)
+{
+    cairo_xlib_glyph_private_t *priv;
+
+    priv = _cairo_malloc (sizeof (*priv));
+    if (unlikely (priv == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_scaled_glyph_attach_private (glyph, &priv->base, display,
+					_cairo_xlib_glyph_fini);
+    priv->glyphset = info;
+
+    glyph->dev_private = info;
+    glyph->dev_private_key = display;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_xlib_font_glyphset_t *
+_cairo_xlib_font_get_glyphset_info_for_format (cairo_xlib_display_t *display,
+					       cairo_scaled_font_t *font,
+					       cairo_format_t       format)
+{
+    cairo_xlib_font_t *priv;
+    cairo_xlib_font_glyphset_t *info;
+    int glyphset_index;
+
+    glyphset_index = _cairo_xlib_get_glyphset_index_for_format (format);
+
+    priv = _cairo_xlib_font_get (display, font);
+    if (priv == NULL) {
+	priv = _cairo_xlib_font_create (display, font);
+	if (priv == NULL)
+	    return NULL;
+    }
+
+    info = &priv->glyphset[glyphset_index];
+    if (info->glyphset == None) {
+	info->xrender_format =
+	    _cairo_xlib_display_get_xrender_format (display, info->format);
+	info->glyphset = XRenderCreateGlyphSet (display->display,
+						info->xrender_format);
+    }
+
+    return info;
+}
+
+static cairo_bool_t
+has_pending_free_glyph (cairo_xlib_font_glyphset_t *info,
+			unsigned long glyph_index)
+{
+    struct _cairo_xlib_font_glyphset_free_glyphs *to_free;
+    int i;
+
+    to_free = &info->to_free;
+    for (i = 0; i < to_free->count; i++) {
+	if (to_free->indices[i] == glyph_index) {
+	    to_free->count--;
+	    memmove (&to_free->indices[i],
+		     &to_free->indices[i+1],
+		     (to_free->count - i) * sizeof (to_free->indices[0]));
+	    return TRUE;
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_xlib_font_glyphset_t *
+find_pending_free_glyph (cairo_xlib_display_t *display,
+			 cairo_scaled_font_t *font,
+			 unsigned long glyph_index,
+			 cairo_image_surface_t *surface)
+{
+    cairo_xlib_font_t *priv;
+    int i;
+
+    priv = _cairo_xlib_font_get (display, font);
+    if (priv == NULL)
+	return NULL;
+
+    if (surface != NULL) {
+	i = _cairo_xlib_get_glyphset_index_for_format (surface->format);
+	if (has_pending_free_glyph (&priv->glyphset[i], glyph_index))
+	    return &priv->glyphset[i];
+    } else {
+	for (i = 0; i < NUM_GLYPHSETS; i++) {
+	    if (has_pending_free_glyph (&priv->glyphset[i], glyph_index))
+		return &priv->glyphset[i];
+	}
+    }
+
+    return NULL;
+}
+
+static cairo_status_t
+_cairo_xlib_surface_add_glyph (cairo_xlib_display_t *display,
+			       cairo_scaled_font_t   *font,
+			       cairo_scaled_glyph_t **pscaled_glyph)
+{
+    XGlyphInfo glyph_info;
+    unsigned long glyph_index;
+    unsigned char *data;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_scaled_glyph_t *glyph = *pscaled_glyph;
+    cairo_image_surface_t *glyph_surface = glyph->surface;
+    cairo_bool_t already_had_glyph_surface;
+    cairo_xlib_font_glyphset_t *info;
+
+    glyph_index = _cairo_scaled_glyph_index (glyph);
+
+    /* check to see if we have a pending XRenderFreeGlyph for this glyph */
+    info = find_pending_free_glyph (display, font, glyph_index, glyph_surface);
+    if (info != NULL)
+	return _cairo_xlib_glyph_attach (display, glyph, info);
+
+    if (glyph_surface == NULL) {
+	status = _cairo_scaled_glyph_lookup (font,
+					     glyph_index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS |
+					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					     pscaled_glyph);
+	if (unlikely (status))
+	    return status;
+
+	glyph = *pscaled_glyph;
+	glyph_surface = glyph->surface;
+	already_had_glyph_surface = FALSE;
+    } else {
+	already_had_glyph_surface = TRUE;
+    }
+
+    info = _cairo_xlib_font_get_glyphset_info_for_format (display, font,
+							  glyph_surface->format);
+
+#if 0
+    /* If the glyph surface has zero height or width, we create
+     * a clear 1x1 surface, to avoid various X server bugs.
+     */
+    if (glyph_surface->width == 0 || glyph_surface->height == 0) {
+	cairo_surface_t *tmp_surface;
+
+	tmp_surface = cairo_image_surface_create (info->format, 1, 1);
+	status = tmp_surface->status;
+	if (unlikely (status))
+	    goto BAIL;
+
+	tmp_surface->device_transform = glyph_surface->base.device_transform;
+	tmp_surface->device_transform_inverse = glyph_surface->base.device_transform_inverse;
+
+	glyph_surface = (cairo_image_surface_t *) tmp_surface;
+    }
+#endif
+
+    /* If the glyph format does not match the font format, then we
+     * create a temporary surface for the glyph image with the font's
+     * format.
+     */
+    if (glyph_surface->format != info->format) {
+	cairo_surface_pattern_t pattern;
+	cairo_surface_t *tmp_surface;
+
+	tmp_surface = cairo_image_surface_create (info->format,
+						  glyph_surface->width,
+						  glyph_surface->height);
+	status = tmp_surface->status;
+	if (unlikely (status))
+	    goto BAIL;
+
+	tmp_surface->device_transform = glyph_surface->base.device_transform;
+	tmp_surface->device_transform_inverse = glyph_surface->base.device_transform_inverse;
+
+	_cairo_pattern_init_for_surface (&pattern, &glyph_surface->base);
+	status = _cairo_surface_paint (tmp_surface,
+				       CAIRO_OPERATOR_SOURCE, &pattern.base,
+				       NULL);
+	_cairo_pattern_fini (&pattern.base);
+
+	glyph_surface = (cairo_image_surface_t *) tmp_surface;
+
+	if (unlikely (status))
+	    goto BAIL;
+    }
+
+    /* XXX: FRAGILE: We're ignore device_transform scaling here. A bug? */
+    glyph_info.x = _cairo_lround (glyph_surface->base.device_transform.x0);
+    glyph_info.y = _cairo_lround (glyph_surface->base.device_transform.y0);
+    glyph_info.width = glyph_surface->width;
+    glyph_info.height = glyph_surface->height;
+    glyph_info.xOff = glyph->x_advance;
+    glyph_info.yOff = glyph->y_advance;
+
+    data = glyph_surface->data;
+
+    /* flip formats around */
+    switch (_cairo_xlib_get_glyphset_index_for_format (glyph->surface->format)) {
+    case GLYPHSET_INDEX_A1:
+	/* local bitmaps are always stored with bit == byte */
+	if (_cairo_is_little_endian() != (BitmapBitOrder (display->display) == LSBFirst)) {
+	    int		    c = glyph_surface->stride * glyph_surface->height;
+	    unsigned char   *d;
+	    unsigned char   *new, *n;
+
+	    if (c == 0)
+		break;
+
+	    new = _cairo_malloc (c);
+	    if (!new) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto BAIL;
+	    }
+	    n = new;
+	    d = data;
+	    do {
+		char	b = *d++;
+		b = ((b << 1) & 0xaa) | ((b >> 1) & 0x55);
+		b = ((b << 2) & 0xcc) | ((b >> 2) & 0x33);
+		b = ((b << 4) & 0xf0) | ((b >> 4) & 0x0f);
+		*n++ = b;
+	    } while (--c);
+	    data = new;
+	}
+	break;
+    case GLYPHSET_INDEX_A8:
+	break;
+    case GLYPHSET_INDEX_ARGB32:
+	if (_cairo_is_little_endian() != (ImageByteOrder (display->display) == LSBFirst)) {
+	    unsigned int c = glyph_surface->stride * glyph_surface->height / 4;
+	    const uint32_t *d;
+	    uint32_t *new, *n;
+
+	    if (c == 0)
+		break;
+
+	    new = _cairo_malloc (4 * c);
+	    if (unlikely (new == NULL)) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto BAIL;
+	    }
+	    n = new;
+	    d = (uint32_t *) data;
+	    do {
+		*n++ = bswap_32 (*d);
+		d++;
+	    } while (--c);
+	    data = (uint8_t *) new;
+	}
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+    /* XXX assume X server wants pixman padding. Xft assumes this as well */
+
+    XRenderAddGlyphs (display->display, info->glyphset,
+		      &glyph_index, &glyph_info, 1,
+		      (char *) data,
+		      glyph_surface->stride * glyph_surface->height);
+
+    if (data != glyph_surface->data)
+	free (data);
+
+    status = _cairo_xlib_glyph_attach (display, glyph, info);
+
+ BAIL:
+    if (glyph_surface != glyph->surface)
+	cairo_surface_destroy (&glyph_surface->base);
+
+    /* if the scaled glyph didn't already have a surface attached
+     * to it, release the created surface now that we have it
+     * uploaded to the X server.  If the surface has already been
+     * there (eg. because image backend requested it), leave it in
+     * the cache
+     */
+    if (!already_had_glyph_surface)
+	_cairo_scaled_glyph_set_surface (glyph, font, NULL);
+
+    return status;
+}
+
+typedef void (*cairo_xrender_composite_text_func_t)
+	      (Display                      *dpy,
+	       int                          op,
+	       Picture                      src,
+	       Picture                      dst,
+	       _Xconst XRenderPictFormat    *maskFormat,
+	       int                          xSrc,
+	       int                          ySrc,
+	       int                          xDst,
+	       int                          yDst,
+	       _Xconst XGlyphElt8           *elts,
+	       int                          nelt);
+
+/* Build a struct of the same size of #cairo_glyph_t that can be used both as
+ * an input glyph with double coordinates, and as "working" glyph with
+ * integer from-current-point offsets. */
+typedef union {
+    cairo_glyph_t d;
+    unsigned long index;
+    struct {
+        unsigned long index;
+        int x;
+        int y;
+    } i;
+} cairo_xlib_glyph_t;
+
+/* compile-time assert that #cairo_xlib_glyph_t is the same size as #cairo_glyph_t */
+COMPILE_TIME_ASSERT (sizeof (cairo_xlib_glyph_t) == sizeof (cairo_glyph_t));
+
+/* Start a new element for the first glyph,
+ * or for any glyph that has unexpected position,
+ * or if current element has too many glyphs
+ * (Xrender limits each element to 252 glyphs, we limit them to 128)
+ *
+ * These same conditions need to be mirrored between
+ * _cairo_xlib_surface_emit_glyphs and _emit_glyph_chunks
+ */
+#define _start_new_glyph_elt(count, glyph) \
+    (((count) & 127) == 0 || (glyph)->i.x || (glyph)->i.y)
+
+static cairo_status_t
+_emit_glyphs_chunk (cairo_xlib_display_t *display,
+                    cairo_xlib_surface_t *dst,
+		    int dst_x, int dst_y,
+		    cairo_xlib_glyph_t *glyphs,
+		    int num_glyphs,
+		    cairo_scaled_font_t *font,
+		    cairo_bool_t use_mask,
+		    cairo_operator_t op,
+		    cairo_xlib_source_t *src,
+		    int src_x, int src_y,
+		    /* info for this chunk */
+		    int num_elts,
+		    int width,
+		    cairo_xlib_font_glyphset_t *info)
+{
+    /* Which XRenderCompositeText function to use */
+    cairo_xrender_composite_text_func_t composite_text_func;
+    int size;
+
+    /* Element buffer stuff */
+    XGlyphElt8 *elts;
+    XGlyphElt8 stack_elts[CAIRO_STACK_ARRAY_LENGTH (XGlyphElt8)];
+
+    /* Reuse the input glyph array for output char generation */
+    char *char8 = (char *) glyphs;
+    unsigned short *char16 = (unsigned short *) glyphs;
+    unsigned int *char32 = (unsigned int *) glyphs;
+
+    int i;
+    int nelt; /* Element index */
+    int n; /* Num output glyphs in current element */
+    int j; /* Num output glyphs so far */
+
+    switch (width) {
+    case 1:
+	/* don't cast the 8-variant, to catch possible mismatches */
+	composite_text_func = XRenderCompositeText8;
+	size = sizeof (char);
+	break;
+    case 2:
+	composite_text_func = (cairo_xrender_composite_text_func_t) XRenderCompositeText16;
+	size = sizeof (unsigned short);
+	break;
+    default:
+    case 4:
+	composite_text_func = (cairo_xrender_composite_text_func_t) XRenderCompositeText32;
+	size = sizeof (unsigned int);
+    }
+
+    /* Allocate element array */
+    if (num_elts <= ARRAY_LENGTH (stack_elts)) {
+      elts = stack_elts;
+    } else {
+      elts = _cairo_malloc_ab (num_elts, sizeof (XGlyphElt8));
+      if (unlikely (elts == NULL))
+	  return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    /* Fill them in */
+    nelt = 0;
+    n = 0;
+    j = 0;
+    for (i = 0; i < num_glyphs; i++) {
+      /* Start a new element for first output glyph,
+       * or for any glyph that has unexpected position,
+       * or if current element has too many glyphs.
+       *
+       * These same conditions are mirrored in _cairo_xlib_surface_emit_glyphs()
+       */
+      if (_start_new_glyph_elt (j, &glyphs[i])) {
+	  if (j) {
+	      elts[nelt].nchars = n;
+	      nelt++;
+	      n = 0;
+	  }
+	  elts[nelt].chars = char8 + size * j;
+	  elts[nelt].glyphset = info->glyphset;
+	  elts[nelt].xOff = glyphs[i].i.x;
+	  elts[nelt].yOff = glyphs[i].i.y;
+      }
+
+      switch (width) {
+      case 1: char8 [j] = (char)           glyphs[i].index; break;
+      case 2: char16[j] = (unsigned short) glyphs[i].index; break;
+      default:
+      case 4: char32[j] = (unsigned int)   glyphs[i].index; break;
+      }
+
+      n++;
+      j++;
+    }
+
+    if (n) {
+	elts[nelt].nchars = n;
+	nelt++;
+    }
+
+    /* Check that we agree with _cairo_xlib_surface_emit_glyphs() on the
+     * expected number of xGlyphElts.  */
+    assert (nelt == num_elts);
+
+    composite_text_func (display->display, op,
+			 src->picture,
+			 dst->picture,
+			 use_mask ? info->xrender_format : NULL,
+			 src_x + elts[0].xOff + dst_x,
+			 src_y + elts[0].yOff + dst_y,
+			 elts[0].xOff, elts[0].yOff,
+			 (XGlyphElt8 *) elts, nelt);
+
+    if (elts != stack_elts)
+      free (elts);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+check_composite_glyphs (const cairo_composite_rectangles_t *extents,
+			cairo_scaled_font_t *font,
+			cairo_glyph_t *glyphs,
+			int *num_glyphs)
+{
+    cairo_xlib_surface_t *dst = (cairo_xlib_surface_t *)extents->surface;
+    cairo_xlib_display_t *display = dst->display;
+    int max_request_size, size;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (! CAIRO_RENDER_SUPPORTS_OPERATOR (display, extents->op))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* The glyph coordinates must be representable in an int16_t.
+     * When possible, they will be expressed as an offset from the
+     * previous glyph, otherwise they will be an offset from the
+     * surface origin. If we can't guarantee this to be possible,
+     * fallback.
+     */
+    if (extents->bounded.x + extents->bounded.width > INT16_MAX ||
+	extents->bounded.y + extents->bounded.height> INT16_MAX ||
+	extents->bounded.x < INT16_MIN ||
+	extents->bounded.y < INT16_MIN)
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* Approximate the size of the largest glyph and fallback if we can not
+     * upload it to the xserver.
+     */
+    size = ceil (font->max_scale);
+    size = 4 * size * size;
+    max_request_size = (XExtendedMaxRequestSize (display->display) ? XExtendedMaxRequestSize (display->display)
+			: XMaxRequestSize (display->display)) * 4 -
+	sz_xRenderAddGlyphsReq -
+	sz_xGlyphInfo          -
+	8;
+    if (size >= max_request_size)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* sz_xGlyphtElt required alignment to a 32-bit boundary, so ensure we have
+ * enough room for padding */
+#define _cairo_sz_xGlyphElt (sz_xGlyphElt + 4)
+
+static cairo_int_status_t
+composite_glyphs (void				*surface,
+		  cairo_operator_t		 op,
+		  cairo_surface_t		*_src,
+		  int				 src_x,
+		  int				 src_y,
+		  int				 dst_x,
+		  int				 dst_y,
+		  cairo_composite_glyphs_info_t *info)
+{
+    cairo_xlib_surface_t *dst = surface;
+    cairo_xlib_glyph_t *glyphs = (cairo_xlib_glyph_t *)info->glyphs;
+    cairo_xlib_source_t *src = (cairo_xlib_source_t *)_src;
+    cairo_xlib_display_t *display = dst->display;
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+    cairo_scaled_glyph_t *glyph;
+    cairo_fixed_t x = dst_x, y = dst_y;
+    cairo_xlib_font_glyphset_t *glyphset = NULL, *this_glyphset_info;
+
+    unsigned long max_index = 0;
+    int width = 1;
+    int num_elts = 0;
+    int num_out_glyphs = 0;
+    int num_glyphs = info->num_glyphs;
+
+    int max_request_size = XMaxRequestSize (display->display) * 4
+			 - MAX (sz_xRenderCompositeGlyphs8Req,
+				MAX(sz_xRenderCompositeGlyphs16Req,
+				    sz_xRenderCompositeGlyphs32Req));
+    int request_size = 0;
+    int i;
+
+    op = _render_operator (op),
+    _cairo_xlib_surface_ensure_picture (dst);
+    for (i = 0; i < num_glyphs; i++) {
+	int this_x, this_y;
+	int old_width;
+
+	status = _cairo_scaled_glyph_lookup (info->font,
+					     glyphs[i].index,
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &glyph);
+	if (unlikely (status))
+	    return status;
+
+	this_x = _cairo_lround (glyphs[i].d.x);
+	this_y = _cairo_lround (glyphs[i].d.y);
+
+	/* Send unsent glyphs to the server */
+	if (glyph->dev_private_key != display) {
+	    status = _cairo_xlib_surface_add_glyph (display, info->font, &glyph);
+	    if (unlikely (status))
+		return status;
+	}
+
+	this_glyphset_info = glyph->dev_private;
+	if (!glyphset)
+	    glyphset = this_glyphset_info;
+
+	/* The invariant here is that we can always flush the glyphs
+	 * accumulated before this one, using old_width, and they
+	 * would fit in the request.
+	 */
+	old_width = width;
+
+	/* Update max glyph index */
+	if (glyphs[i].index > max_index) {
+	    max_index = glyphs[i].index;
+	    if (max_index >= 65536)
+	      width = 4;
+	    else if (max_index >= 256)
+	      width = 2;
+	    if (width != old_width)
+	      request_size += (width - old_width) * num_out_glyphs;
+	}
+
+	/* If we will pass the max request size by adding this glyph,
+	 * flush current glyphs.  Note that we account for a
+	 * possible element being added below.
+	 *
+	 * Also flush if changing glyphsets, as Xrender limits one mask
+	 * format per request, so we can either break up, or use a
+	 * wide-enough mask format.  We do the former.  One reason to
+	 * prefer the latter is the fact that Xserver ADDs all glyphs
+	 * to the mask first, and then composes that to final surface,
+	 * though it's not a big deal.
+	 *
+	 * If the glyph has a coordinate which cannot be represented
+	 * as a 16-bit offset from the previous glyph, flush the
+	 * current chunk. The current glyph will be the first one in
+	 * the next chunk, thus its coordinates will be an offset from
+	 * the destination origin. This offset is guaranteed to be
+	 * representable as 16-bit offset (otherwise we would have
+	 * fallen back).
+	 */
+	if (request_size + width > max_request_size - _cairo_sz_xGlyphElt ||
+	    this_x - x > INT16_MAX || this_x - x < INT16_MIN ||
+	    this_y - y > INT16_MAX || this_y - y < INT16_MIN ||
+	    (this_glyphset_info != glyphset)) {
+	    status = _emit_glyphs_chunk (display, dst, dst_x, dst_y,
+					 glyphs, i, info->font, info->use_mask,
+					 op, src, src_x, src_y,
+					 num_elts, old_width, glyphset);
+	    if (unlikely (status))
+		return status;
+
+	    glyphs += i;
+	    num_glyphs -= i;
+	    i = 0;
+	    max_index = glyphs[i].index;
+	    width = max_index < 256 ? 1 : max_index < 65536 ? 2 : 4;
+	    request_size = 0;
+	    num_elts = 0;
+	    num_out_glyphs = 0;
+	    x = y = 0;
+	    glyphset = this_glyphset_info;
+	}
+
+	/* Convert absolute glyph position to relative-to-current-point
+	 * position */
+	glyphs[i].i.x = this_x - x;
+	glyphs[i].i.y = this_y - y;
+
+	/* Start a new element for the first glyph,
+	 * or for any glyph that has unexpected position,
+	 * or if current element has too many glyphs.
+	 *
+	 * These same conditions are mirrored in _emit_glyphs_chunk().
+	 */
+      if (_start_new_glyph_elt (num_out_glyphs, &glyphs[i])) {
+	    num_elts++;
+	    request_size += _cairo_sz_xGlyphElt;
+	}
+
+	/* adjust current-position */
+	x = this_x + glyph->x_advance;
+	y = this_y + glyph->y_advance;
+
+	num_out_glyphs++;
+	request_size += width;
+    }
+
+    if (num_elts) {
+	status = _emit_glyphs_chunk (display, dst, dst_x, dst_y,
+				     glyphs, i, info->font, info->use_mask,
+				     op, src, src_x, src_y,
+				     num_elts, width, glyphset);
+    }
+
+    return status;
+}
+
+const cairo_compositor_t *
+_cairo_xlib_mask_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_mask_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_mask_compositor_init (&compositor,
+				     _cairo_xlib_fallback_compositor_get ());
+
+	compositor.acquire = acquire;
+	compositor.release = release;
+	compositor.set_clip_region = set_clip_region;
+	compositor.pattern_to_surface = _cairo_xlib_source_create_for_pattern;
+	compositor.draw_image_boxes = draw_image_boxes;
+	compositor.fill_rectangles = fill_rectangles;
+	compositor.fill_boxes = fill_boxes;
+	compositor.copy_boxes = copy_boxes;
+	compositor.check_composite = check_composite;
+	compositor.composite = composite;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	compositor.check_composite_glyphs = check_composite_glyphs;
+	compositor.composite_glyphs = composite_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
+
+#define CAIRO_FIXED_16_16_MIN -32768
+#define CAIRO_FIXED_16_16_MAX 32767
+
+static cairo_bool_t
+line_exceeds_16_16 (const cairo_line_t *line)
+{
+    return
+	line->p1.x < _cairo_fixed_from_int (CAIRO_FIXED_16_16_MIN) ||
+	line->p1.x > _cairo_fixed_from_int (CAIRO_FIXED_16_16_MAX) ||
+	line->p2.x < _cairo_fixed_from_int (CAIRO_FIXED_16_16_MIN) ||
+	line->p2.x > _cairo_fixed_from_int (CAIRO_FIXED_16_16_MAX) ||
+	line->p1.y < _cairo_fixed_from_int (CAIRO_FIXED_16_16_MIN) ||
+	line->p1.y > _cairo_fixed_from_int (CAIRO_FIXED_16_16_MAX) ||
+	line->p2.y < _cairo_fixed_from_int (CAIRO_FIXED_16_16_MIN) ||
+	line->p2.y > _cairo_fixed_from_int (CAIRO_FIXED_16_16_MAX);
+}
+
+static void
+project_line_x_onto_16_16 (const cairo_line_t *line,
+			    cairo_fixed_t top,
+			    cairo_fixed_t bottom,
+			    XLineFixed *out)
+{
+    cairo_point_double_t p1, p2;
+    double m;
+
+    p1.x = _cairo_fixed_to_double (line->p1.x);
+    p1.y = _cairo_fixed_to_double (line->p1.y);
+
+    p2.x = _cairo_fixed_to_double (line->p2.x);
+    p2.y = _cairo_fixed_to_double (line->p2.y);
+
+    m = (p2.x - p1.x) / (p2.y - p1.y);
+    out->p1.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (top - line->p1.y));
+    out->p2.x = _cairo_fixed_16_16_from_double (p1.x + m * _cairo_fixed_to_double (bottom - line->p1.y));
+}
+#if 0
+static cairo_int_status_T
+check_composite_trapezoids ()
+{
+    operation = _categorize_composite_operation (dst, op, pattern, TRUE);
+    if (operation == DO_UNSUPPORTED)
+	return UNSUPPORTED ("unsupported operation");
+
+    operation = _recategorize_composite_operation (dst, op, src,
+						   &attributes, TRUE);
+    if (operation == DO_UNSUPPORTED) {
+	status = UNSUPPORTED ("unsupported operation");
+	goto BAIL;
+    }
+
+}
+#endif
+
+static cairo_int_status_t
+composite_traps (void			*abstract_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 int			src_x,
+		 int			src_y,
+		 int			dst_x,
+		 int			dst_y,
+		 const cairo_rectangle_int_t *extents,
+		 cairo_antialias_t	antialias,
+		 cairo_traps_t		*traps)
+{
+    cairo_xlib_surface_t	*dst = abstract_dst;
+    cairo_xlib_display_t        *display = dst->display;
+    cairo_xlib_source_t		*src = (cairo_xlib_source_t *)abstract_src;
+    XRenderPictFormat		*pict_format;
+    XTrapezoid xtraps_stack[CAIRO_STACK_ARRAY_LENGTH (XTrapezoid)];
+    XTrapezoid *xtraps = xtraps_stack;
+    int dx, dy;
+    int i;
+
+    //X_DEBUG ((display->display, "composite_trapezoids (dst=%x)", (unsigned int) dst->drawable));
+
+    if (traps->num_traps == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (dst->base.is_clear &&
+	(op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD))
+    {
+	op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    pict_format =
+	_cairo_xlib_display_get_xrender_format (display,
+						antialias == CAIRO_ANTIALIAS_NONE ?  CAIRO_FORMAT_A1 : CAIRO_FORMAT_A8);
+
+    if (traps->num_traps > ARRAY_LENGTH (xtraps_stack)) {
+	xtraps = _cairo_malloc_ab (traps->num_traps, sizeof (XTrapezoid));
+	if (unlikely (xtraps == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    dx = -dst_x << 16;
+    dy = -dst_y << 16;
+    for (i = 0; i < traps->num_traps; i++) {
+	cairo_trapezoid_t *t = &traps->traps[i];
+
+	/* top/bottom will be clamped to surface bounds */
+	xtraps[i].top = _cairo_fixed_to_16_16(t->top) + dy;
+	xtraps[i].bottom = _cairo_fixed_to_16_16(t->bottom) + dy;
+
+	/* However, all the other coordinates will have been left untouched so
+	 * as not to introduce numerical error. Recompute them if they
+	 * exceed the 16.16 limits.
+	 */
+	if (unlikely (line_exceeds_16_16 (&t->left))) {
+	    project_line_x_onto_16_16 (&t->left, t->top, t->bottom,
+					&xtraps[i].left);
+	    xtraps[i].left.p1.x += dx;
+	    xtraps[i].left.p2.x += dx;
+	    xtraps[i].left.p1.y = xtraps[i].top;
+	    xtraps[i].left.p2.y = xtraps[i].bottom;
+	} else {
+	    xtraps[i].left.p1.x = _cairo_fixed_to_16_16(t->left.p1.x) + dx;
+	    xtraps[i].left.p1.y = _cairo_fixed_to_16_16(t->left.p1.y) + dy;
+	    xtraps[i].left.p2.x = _cairo_fixed_to_16_16(t->left.p2.x) + dx;
+	    xtraps[i].left.p2.y = _cairo_fixed_to_16_16(t->left.p2.y) + dy;
+	}
+
+	if (unlikely (line_exceeds_16_16 (&t->right))) {
+	    project_line_x_onto_16_16 (&t->right, t->top, t->bottom,
+				       &xtraps[i].right);
+	    xtraps[i].right.p1.x += dx;
+	    xtraps[i].right.p2.x += dx;
+	    xtraps[i].right.p1.y = xtraps[i].top;
+	    xtraps[i].right.p2.y = xtraps[i].bottom;
+	} else {
+	    xtraps[i].right.p1.x = _cairo_fixed_to_16_16(t->right.p1.x) + dx;
+	    xtraps[i].right.p1.y = _cairo_fixed_to_16_16(t->right.p1.y) + dy;
+	    xtraps[i].right.p2.x = _cairo_fixed_to_16_16(t->right.p2.x) + dx;
+	    xtraps[i].right.p2.y = _cairo_fixed_to_16_16(t->right.p2.y) + dy;
+	}
+    }
+
+    if (xtraps[0].left.p1.y < xtraps[0].left.p2.y) {
+	src_x += _cairo_fixed_16_16_floor (xtraps[0].left.p1.x);
+	src_y += _cairo_fixed_16_16_floor (xtraps[0].left.p1.y);
+    } else {
+	src_x += _cairo_fixed_16_16_floor (xtraps[0].left.p2.x);
+	src_y += _cairo_fixed_16_16_floor (xtraps[0].left.p2.y);
+    }
+    src_x += dst_x;
+    src_y += dst_y;
+
+    _cairo_xlib_surface_ensure_picture (dst);
+    _cairo_xlib_surface_set_precision (dst, antialias);
+    XRenderCompositeTrapezoids (dst->dpy,
+				_render_operator (op),
+				src->picture, dst->picture,
+				pict_format,
+				src_x, src_y,
+				xtraps, traps->num_traps);
+
+    if (xtraps != xtraps_stack)
+	free (xtraps);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_tristrip (void		*abstract_dst,
+		    cairo_operator_t	op,
+		    cairo_surface_t	*abstract_src,
+		    int			src_x,
+		    int			src_y,
+		    int			dst_x,
+		    int			dst_y,
+		    const cairo_rectangle_int_t *extents,
+		    cairo_antialias_t	antialias,
+		    cairo_tristrip_t	*strip)
+{
+    cairo_xlib_surface_t	*dst = abstract_dst;
+    cairo_xlib_display_t        *display = dst->display;
+    cairo_xlib_source_t		*src = (cairo_xlib_source_t *)abstract_src;
+    XRenderPictFormat		*pict_format;
+    XPointFixed points_stack[CAIRO_STACK_ARRAY_LENGTH (XPointFixed)];
+    XPointFixed *points = points_stack;
+    int dx, dy;
+    int i;
+
+    //X_DEBUG ((display->display, "composite_trapezoids (dst=%x)", (unsigned int) dst->drawable));
+
+    pict_format =
+	_cairo_xlib_display_get_xrender_format (display,
+						antialias == CAIRO_ANTIALIAS_NONE ?  CAIRO_FORMAT_A1 : CAIRO_FORMAT_A8);
+
+    if (strip->num_points > ARRAY_LENGTH (points_stack)) {
+	points = _cairo_malloc_ab (strip->num_points, sizeof (XPointFixed));
+	if (unlikely (points == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    dx = -dst_x << 16;
+    dy = -dst_y << 16;
+    for (i = 0; i < strip->num_points; i++) {
+	cairo_point_t *p = &strip->points[i];
+
+	points[i].x = _cairo_fixed_to_16_16(p->x) + dx;
+	points[i].y = _cairo_fixed_to_16_16(p->y) + dy;
+    }
+
+    src_x += _cairo_fixed_16_16_floor (points[0].x) + dst_x;
+    src_y += _cairo_fixed_16_16_floor (points[0].y) + dst_y;
+
+    _cairo_xlib_surface_ensure_picture (dst);
+    _cairo_xlib_surface_set_precision (dst, antialias);
+    XRenderCompositeTriStrip (dst->dpy,
+			      _render_operator (op),
+			      src->picture, dst->picture,
+			      pict_format,
+			      src_x, src_y,
+			      points, strip->num_points);
+
+    if (points != points_stack)
+	free (points);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+const cairo_compositor_t *
+_cairo_xlib_traps_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_traps_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_traps_compositor_init (&compositor,
+				      _cairo_xlib_mask_compositor_get ());
+
+	compositor.acquire = acquire;
+	compositor.release = release;
+	compositor.set_clip_region = set_clip_region;
+	compositor.pattern_to_surface = _cairo_xlib_source_create_for_pattern;
+	compositor.draw_image_boxes = draw_image_boxes;
+	compositor.copy_boxes = copy_boxes;
+	compositor.fill_boxes = fill_boxes;
+	compositor.check_composite = check_composite;
+	compositor.composite = composite;
+	compositor.lerp = lerp;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	//compositor.check_composite_traps = check_composite_traps;
+	compositor.composite_traps = composite_traps;
+	//compositor.check_composite_tristrip = check_composite_tristrip;
+	compositor.composite_tristrip = composite_tristrip;
+	compositor.check_composite_glyphs = check_composite_glyphs;
+	compositor.composite_glyphs = composite_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-screen.c b/libs/cairo-1.16.0/src/cairo-xlib-screen.c
new file mode 100644
index 0000000..ff3bdfc
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-screen.c
@@ -0,0 +1,467 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Partially on code from xftdpy.c
+ *
+ * Copyright © 2000 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-xrender-private.h"
+
+#include "cairo-xlib-surface-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+
+#include "cairo-fontconfig-private.h"
+
+static int
+parse_boolean (const char *v)
+{
+    char c0, c1;
+
+    c0 = *v;
+    if (c0 == 't' || c0 == 'T' || c0 == 'y' || c0 == 'Y' || c0 == '1')
+	return 1;
+    if (c0 == 'f' || c0 == 'F' || c0 == 'n' || c0 == 'N' || c0 == '0')
+	return 0;
+    if (c0 == 'o')
+    {
+	c1 = v[1];
+	if (c1 == 'n' || c1 == 'N')
+	    return 1;
+	if (c1 == 'f' || c1 == 'F')
+	    return 0;
+    }
+
+    return -1;
+}
+
+static cairo_bool_t
+get_boolean_default (Display       *dpy,
+		     const char    *option,
+		     cairo_bool_t  *value)
+{
+    char *v;
+    int i;
+
+    v = XGetDefault (dpy, "Xft", option);
+    if (v) {
+	i = parse_boolean (v);
+	if (i >= 0) {
+	    *value = i;
+	    return TRUE;
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_bool_t
+get_integer_default (Display    *dpy,
+		     const char *option,
+		     int        *value)
+{
+    char *v, *e;
+
+    v = XGetDefault (dpy, "Xft", option);
+    if (v) {
+#if CAIRO_HAS_FC_FONT
+	if (FcNameConstant ((FcChar8 *) v, value))
+	    return TRUE;
+#endif
+
+	*value = strtol (v, &e, 0);
+	if (e != v)
+	    return TRUE;
+    }
+
+    return FALSE;
+}
+
+static void
+_cairo_xlib_init_screen_font_options (Display *dpy,
+				      cairo_xlib_screen_t *info)
+{
+    cairo_bool_t xft_hinting;
+    cairo_bool_t xft_antialias;
+    int xft_hintstyle;
+    int xft_rgba;
+    int xft_lcdfilter;
+    cairo_antialias_t antialias;
+    cairo_subpixel_order_t subpixel_order;
+    cairo_lcd_filter_t lcd_filter;
+    cairo_hint_style_t hint_style;
+
+    if (!get_boolean_default (dpy, "antialias", &xft_antialias))
+	xft_antialias = TRUE;
+
+    if (!get_integer_default (dpy, "lcdfilter", &xft_lcdfilter)) {
+	/* -1 is an non-existant Fontconfig constant used to differentiate
+	 * the case when no lcdfilter property is available.
+	 */
+	xft_lcdfilter = -1;
+    }
+
+    if (!get_boolean_default (dpy, "hinting", &xft_hinting))
+	xft_hinting = TRUE;
+
+    if (!get_integer_default (dpy, "hintstyle", &xft_hintstyle))
+	xft_hintstyle = FC_HINT_FULL;
+
+    if (!get_integer_default (dpy, "rgba", &xft_rgba))
+    {
+        cairo_xlib_display_t *display = (cairo_xlib_display_t *) info->device;
+
+	xft_rgba = FC_RGBA_UNKNOWN;
+
+#if RENDER_MAJOR > 0 || RENDER_MINOR >= 6
+        if (display->render_major > 0 || display->render_minor >= 6) {
+	    int render_order = XRenderQuerySubpixelOrder (dpy,
+							  XScreenNumberOfScreen (info->screen));
+
+	    switch (render_order) {
+	    default:
+	    case SubPixelUnknown:
+		xft_rgba = FC_RGBA_UNKNOWN;
+		break;
+	    case SubPixelHorizontalRGB:
+		xft_rgba = FC_RGBA_RGB;
+		break;
+	    case SubPixelHorizontalBGR:
+		xft_rgba = FC_RGBA_BGR;
+		break;
+	    case SubPixelVerticalRGB:
+		xft_rgba = FC_RGBA_VRGB;
+		break;
+	    case SubPixelVerticalBGR:
+		xft_rgba = FC_RGBA_VBGR;
+		break;
+	    case SubPixelNone:
+		xft_rgba = FC_RGBA_NONE;
+		break;
+	    }
+	}
+#endif
+    }
+
+    if (xft_hinting) {
+	switch (xft_hintstyle) {
+	case FC_HINT_NONE:
+	    hint_style = CAIRO_HINT_STYLE_NONE;
+	    break;
+	case FC_HINT_SLIGHT:
+	    hint_style = CAIRO_HINT_STYLE_SLIGHT;
+	    break;
+	case FC_HINT_MEDIUM:
+	    hint_style = CAIRO_HINT_STYLE_MEDIUM;
+	    break;
+	case FC_HINT_FULL:
+	    hint_style = CAIRO_HINT_STYLE_FULL;
+	    break;
+	default:
+	    hint_style = CAIRO_HINT_STYLE_DEFAULT;
+	}
+    } else {
+	hint_style = CAIRO_HINT_STYLE_NONE;
+    }
+
+    switch (xft_rgba) {
+    case FC_RGBA_RGB:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
+	break;
+    case FC_RGBA_BGR:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
+	break;
+    case FC_RGBA_VRGB:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
+	break;
+    case FC_RGBA_VBGR:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
+	break;
+    case FC_RGBA_UNKNOWN:
+    case FC_RGBA_NONE:
+    default:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+    }
+
+    switch (xft_lcdfilter) {
+    case FC_LCD_NONE:
+	lcd_filter = CAIRO_LCD_FILTER_NONE;
+	break;
+    case FC_LCD_DEFAULT:
+	lcd_filter = CAIRO_LCD_FILTER_FIR5;
+	break;
+    case FC_LCD_LIGHT:
+	lcd_filter = CAIRO_LCD_FILTER_FIR3;
+	break;
+    case FC_LCD_LEGACY:
+	lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;
+	break;
+    default:
+	lcd_filter = CAIRO_LCD_FILTER_DEFAULT;
+	break;
+    }
+
+    if (xft_antialias) {
+	if (subpixel_order == CAIRO_SUBPIXEL_ORDER_DEFAULT)
+	    antialias = CAIRO_ANTIALIAS_GRAY;
+	else
+	    antialias = CAIRO_ANTIALIAS_SUBPIXEL;
+    } else {
+	antialias = CAIRO_ANTIALIAS_NONE;
+    }
+
+    cairo_font_options_set_hint_style (&info->font_options, hint_style);
+    cairo_font_options_set_antialias (&info->font_options, antialias);
+    cairo_font_options_set_subpixel_order (&info->font_options, subpixel_order);
+    _cairo_font_options_set_lcd_filter (&info->font_options, lcd_filter);
+    cairo_font_options_set_hint_metrics (&info->font_options, CAIRO_HINT_METRICS_ON);
+}
+
+void
+_cairo_xlib_screen_destroy (cairo_xlib_display_t *display,
+			    cairo_xlib_screen_t *info)
+{
+    Display *dpy;
+    int i;
+
+    dpy = display->display;
+
+    while (! cairo_list_is_empty (&info->surfaces)) {
+	cairo_xlib_surface_t *surface;
+
+	surface = cairo_list_first_entry (&info->surfaces,
+					  cairo_xlib_surface_t,
+					  link);
+	cairo_surface_finish (&surface->base);
+    }
+
+    for (i = 0; i < ARRAY_LENGTH (info->gc); i++) {
+	if (info->gc_depths[i] != 0) {
+	    XFreeGC (dpy, info->gc[i]);
+	    info->gc_depths[i] = 0;
+	}
+    }
+
+    while (! cairo_list_is_empty (&info->visuals)) {
+        _cairo_xlib_visual_info_destroy (cairo_list_first_entry (&info->visuals,
+                                                                 cairo_xlib_visual_info_t,
+                                                                 link));
+    }
+
+    cairo_list_del (&info->link);
+
+    free (info);
+}
+
+cairo_status_t
+_cairo_xlib_screen_get (Display *dpy,
+			Screen *screen,
+			cairo_xlib_screen_t **out)
+{
+    cairo_xlib_display_t *display;
+    cairo_device_t *device;
+    cairo_xlib_screen_t *info;
+    cairo_status_t status;
+
+    device = _cairo_xlib_device_create (dpy);
+    status = device->status;
+    if (unlikely (status))
+        goto CLEANUP_DEVICE;
+
+    status =  _cairo_xlib_display_acquire (device, &display);
+    if (unlikely (status))
+        goto CLEANUP_DEVICE;
+
+    info = _cairo_xlib_display_get_screen (display, screen);
+    if (info != NULL) {
+	*out = info;
+	goto CLEANUP_DISPLAY;
+    }
+
+    info = _cairo_malloc (sizeof (cairo_xlib_screen_t));
+    if (unlikely (info == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_DISPLAY;
+    }
+
+    info->device = device;
+    info->screen = screen;
+    info->has_font_options = FALSE;
+    memset (info->gc_depths, 0, sizeof (info->gc_depths));
+    memset (info->gc, 0, sizeof (info->gc));
+
+    cairo_list_init (&info->surfaces);
+    cairo_list_init (&info->visuals);
+    cairo_list_add (&info->link, &display->screens);
+
+    *out = info;
+
+  CLEANUP_DISPLAY:
+    cairo_device_release (&display->base);
+
+  CLEANUP_DEVICE:
+    cairo_device_destroy (device);
+    return status;
+}
+
+GC
+_cairo_xlib_screen_get_gc (cairo_xlib_display_t *display,
+                           cairo_xlib_screen_t *info,
+			   int depth,
+			   Drawable drawable)
+{
+    GC gc = NULL;
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (info->gc); i++) {
+	if (info->gc_depths[i] == depth) {
+	    info->gc_depths[i] = 0;
+	    gc = info->gc[i];
+	    break;
+	}
+    }
+
+    if (gc == NULL) {
+	XGCValues gcv;
+
+	gcv.graphics_exposures = False;
+	gcv.fill_style = FillTiled;
+	gc = XCreateGC (display->display,
+			drawable,
+			GCGraphicsExposures | GCFillStyle, &gcv);
+    }
+
+    return gc;
+}
+
+void
+_cairo_xlib_screen_put_gc (cairo_xlib_display_t *display,
+                           cairo_xlib_screen_t *info,
+			   int depth,
+			   GC gc)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (info->gc); i++) {
+	if (info->gc_depths[i] == 0)
+	    break;
+    }
+
+    if (i == ARRAY_LENGTH (info->gc)) {
+	/* perform random substitution to ensure fair caching over depths */
+	i = rand () % ARRAY_LENGTH (info->gc);
+	XFreeGC(display->display, info->gc[i]);
+    }
+
+    info->gc[i] = gc;
+    info->gc_depths[i] = depth;
+}
+
+cairo_status_t
+_cairo_xlib_screen_get_visual_info (cairo_xlib_display_t *display,
+                                    cairo_xlib_screen_t *info,
+				    Visual *v,
+				    cairo_xlib_visual_info_t **out)
+{
+    cairo_xlib_visual_info_t *visual;
+    cairo_status_t status;
+
+    cairo_list_foreach_entry (visual,
+                              cairo_xlib_visual_info_t,
+                              &info->visuals,
+                              link)
+    {
+	if (visual->visualid == v->visualid) {
+            *out = visual;
+            return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    status = _cairo_xlib_visual_info_create (display->display,
+					     XScreenNumberOfScreen (info->screen),
+					     v->visualid,
+					     &visual);
+    if (unlikely (status))
+	return status;
+
+    cairo_list_add (&visual->link, &info->visuals);
+    *out = visual;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_font_options_t *
+_cairo_xlib_screen_get_font_options (cairo_xlib_screen_t *info)
+{
+    if (! info->has_font_options) {
+	_cairo_font_options_init_default (&info->font_options);
+	_cairo_font_options_set_round_glyph_positions (&info->font_options, CAIRO_ROUND_GLYPH_POS_ON);
+
+	if (info->screen != NULL) {
+            cairo_xlib_display_t *display;
+
+            if (! _cairo_xlib_display_acquire (info->device, &display)) {
+                _cairo_xlib_init_screen_font_options (display->display,
+                                                      info);
+                cairo_device_release (&display->base);
+            }
+	}
+
+	info->has_font_options = TRUE;
+    }
+
+    return &info->font_options;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-source.c b/libs/cairo-1.16.0/src/cairo-xlib-source.c
new file mode 100644
index 0000000..6269edc
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-source.c
@@ -0,0 +1,1171 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-surface-private.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-paginated-private.h"
+#include "cairo-pattern-inline.h"
+#include "cairo-recording-surface-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-surface-observer-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-inline.h"
+
+#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
+
+static cairo_xlib_surface_t *
+unwrap_source (const cairo_surface_pattern_t *pattern)
+{
+    cairo_rectangle_int_t limits;
+    return (cairo_xlib_surface_t *)_cairo_pattern_get_source (pattern, &limits);
+}
+
+static cairo_status_t
+_cairo_xlib_source_finish (void *abstract_surface)
+{
+    cairo_xlib_source_t *source = abstract_surface;
+
+    XRenderFreePicture (source->dpy, source->picture);
+    if (source->pixmap)
+	    XFreePixmap (source->dpy, source->pixmap);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t cairo_xlib_source_backend = {
+    CAIRO_SURFACE_TYPE_XLIB,
+    _cairo_xlib_source_finish,
+    NULL, /* read-only wrapper */
+};
+
+static cairo_status_t
+_cairo_xlib_proxy_finish (void *abstract_surface)
+{
+    cairo_xlib_proxy_t *proxy = abstract_surface;
+
+    _cairo_xlib_shm_surface_mark_active (proxy->owner);
+    XRenderFreePicture (proxy->source.dpy, proxy->source.picture);
+    if (proxy->source.pixmap)
+	    XFreePixmap (proxy->source.dpy, proxy->source.pixmap);
+    cairo_surface_destroy (proxy->owner);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t cairo_xlib_proxy_backend = {
+    CAIRO_SURFACE_TYPE_XLIB,
+    _cairo_xlib_proxy_finish,
+    NULL, /* read-only wrapper */
+};
+
+static cairo_surface_t *
+source (cairo_xlib_surface_t *dst, Picture picture, Pixmap pixmap)
+{
+    cairo_xlib_source_t *source;
+
+    if (picture == None)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    source = _cairo_malloc (sizeof (*source));
+    if (unlikely (source == NULL)) {
+	XRenderFreePicture (dst->display->display, picture);
+	if (pixmap)
+		XFreePixmap (dst->display->display, pixmap);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    _cairo_surface_init (&source->base,
+			 &cairo_xlib_source_backend,
+			 NULL, /* device */
+			 CAIRO_CONTENT_COLOR_ALPHA,
+			 FALSE); /* is_vector */
+
+    /* The source exists only within an operation */
+    source->picture = picture;
+    source->pixmap = pixmap;
+    source->dpy = dst->display->display;
+
+    return &source->base;
+}
+
+static uint32_t
+hars_petruska_f54_1_random (void)
+{
+#define rol(x,k) ((x << k) | (x >> (32-k)))
+    static uint32_t x;
+    return x = (x ^ rol (x, 5) ^ rol (x, 24)) + 0x37798849;
+#undef rol
+}
+
+static const XTransform identity = {
+    {
+	{ 1 << 16, 0x00000, 0x00000 },
+	{ 0x00000, 1 << 16, 0x00000 },
+	{ 0x00000, 0x00000, 1 << 16 },
+    }
+};
+
+static cairo_bool_t
+picture_set_matrix (cairo_xlib_display_t *display,
+		    Picture picture,
+		    const cairo_matrix_t *matrix,
+		    cairo_filter_t        filter,
+		    double                xc,
+		    double                yc,
+		    int                  *x_offset,
+		    int                  *y_offset)
+{
+    XTransform xtransform;
+    pixman_transform_t *pixman_transform;
+    cairo_int_status_t status;
+
+    /* Casting between pixman_transform_t and XTransform is safe because
+     * they happen to be the exact same type.
+     */
+    pixman_transform = (pixman_transform_t *) &xtransform;
+    status = _cairo_matrix_to_pixman_matrix_offset (matrix, filter, xc, yc,
+						    pixman_transform,
+						    x_offset, y_offset);
+    if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
+	return TRUE;
+    if (unlikely (status != CAIRO_INT_STATUS_SUCCESS))
+	return FALSE;
+
+    if (memcmp (&xtransform, &identity, sizeof (XTransform)) == 0)
+	return TRUE;
+
+    /* a late check in case we perturb the matrix too far */
+    if (! CAIRO_RENDER_HAS_PICTURE_TRANSFORM (display))
+	return FALSE;
+
+    XRenderSetPictureTransform (display->display, picture, &xtransform);
+    return TRUE;
+}
+
+static cairo_status_t
+picture_set_filter (Display *dpy,
+		    Picture picture,
+		    cairo_filter_t filter)
+{
+    const char *render_filter;
+
+    switch (filter) {
+    case CAIRO_FILTER_FAST:
+	render_filter = FilterFast;
+	break;
+    case CAIRO_FILTER_GOOD:
+	render_filter = FilterGood;
+	break;
+    case CAIRO_FILTER_BEST:
+	render_filter = FilterBest;
+	break;
+    case CAIRO_FILTER_NEAREST:
+	render_filter = FilterNearest;
+	break;
+    case CAIRO_FILTER_BILINEAR:
+	render_filter = FilterBilinear;
+	break;
+    case CAIRO_FILTER_GAUSSIAN:
+	/* XXX: The GAUSSIAN value has no implementation in cairo
+	 * whatsoever, so it was really a mistake to have it in the
+	 * API. We could fix this by officially deprecating it, or
+	 * else inventing semantics and providing an actual
+	 * implementation for it. */
+    default:
+	render_filter = FilterBest;
+	break;
+    }
+
+    XRenderSetPictureFilter (dpy, picture, (char *) render_filter, NULL, 0);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static int
+extend_to_repeat (cairo_extend_t extend)
+{
+    switch (extend) {
+    default:
+	ASSERT_NOT_REACHED;
+    case CAIRO_EXTEND_NONE:
+	return RepeatNone;
+    case CAIRO_EXTEND_REPEAT:
+	return RepeatNormal;
+    case CAIRO_EXTEND_REFLECT:
+	return RepeatReflect;
+    case CAIRO_EXTEND_PAD:
+	return RepeatPad;
+    }
+}
+
+static cairo_bool_t
+picture_set_properties (cairo_xlib_display_t *display,
+			Picture picture,
+			const cairo_pattern_t *pattern,
+			const cairo_matrix_t *matrix,
+			const cairo_rectangle_int_t *extents,
+			int *x_off, int *y_off)
+{
+    XRenderPictureAttributes pa;
+    int mask = 0;
+
+    if (! picture_set_matrix (display, picture, matrix, pattern->filter,
+			      extents->x + extents->width / 2,
+			      extents->y + extents->height / 2,
+			      x_off, y_off))
+	return FALSE;
+
+    picture_set_filter (display->display, picture, pattern->filter);
+
+    if (pattern->has_component_alpha) {
+	pa.component_alpha = 1;
+	mask |= CPComponentAlpha;
+    }
+
+    if (pattern->extend != CAIRO_EXTEND_NONE) {
+	pa.repeat = extend_to_repeat (pattern->extend);
+	mask |= CPRepeat;
+    }
+
+    if (mask)
+	XRenderChangePicture (display->display, picture, mask, &pa);
+
+    return TRUE;
+}
+
+static cairo_surface_t *
+render_pattern (cairo_xlib_surface_t *dst,
+		const cairo_pattern_t *pattern,
+		cairo_bool_t is_mask,
+		const cairo_rectangle_int_t *extents,
+		int *src_x, int *src_y)
+{
+    Display *dpy = dst->display->display;
+    cairo_xlib_surface_t *src;
+    cairo_image_surface_t *image;
+    cairo_status_t status;
+    cairo_rectangle_int_t map_extents;
+
+    src = (cairo_xlib_surface_t *)
+	_cairo_surface_create_scratch (&dst->base,
+				       is_mask ? CAIRO_CONTENT_ALPHA : CAIRO_CONTENT_COLOR_ALPHA,
+				       extents->width,
+				       extents->height,
+				       NULL);
+    if (src->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	cairo_surface_destroy (&src->base);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    map_extents = *extents;
+    map_extents.x = map_extents.y = 0;
+
+    image = _cairo_surface_map_to_image (&src->base, &map_extents);
+    status = _cairo_surface_offset_paint (&image->base, extents->x, extents->y,
+					  CAIRO_OPERATOR_SOURCE, pattern,
+					  NULL);
+    status = _cairo_surface_unmap_image (&src->base, image);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&src->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    status = _cairo_xlib_surface_put_shm (src);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&src->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    src->picture = XRenderCreatePicture (dpy,
+					 src->drawable, src->xrender_format,
+					 0, NULL);
+
+    *src_x = -extents->x;
+    *src_y = -extents->y;
+    return &src->base;
+}
+
+static cairo_surface_t *
+gradient_source (cairo_xlib_surface_t *dst,
+		 const cairo_gradient_pattern_t *gradient,
+		 cairo_bool_t is_mask,
+		 const cairo_rectangle_int_t *extents,
+		 int *src_x, int *src_y)
+{
+    cairo_xlib_display_t *display = dst->display;
+    cairo_matrix_t matrix = gradient->base.matrix;
+    char buf[CAIRO_STACK_BUFFER_SIZE];
+    cairo_circle_double_t extremes[2];
+    XFixed *stops;
+    XRenderColor *colors;
+    Picture picture;
+    unsigned int i, n_stops;
+
+    /* The RENDER specification says that the inner circle has
+     * to be completely contained inside the outer one. */
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_RADIAL &&
+	! _cairo_radial_pattern_focus_is_inside ((cairo_radial_pattern_t *) gradient))
+	return render_pattern (dst, &gradient->base, is_mask, extents, src_x, src_y);
+
+    assert (gradient->n_stops > 0);
+    n_stops = MAX (gradient->n_stops, 2);
+
+    if (n_stops < sizeof (buf) / (sizeof (XFixed) + sizeof (XRenderColor)))
+    {
+	stops = (XFixed *) buf;
+    }
+    else
+    {
+	stops =
+	    _cairo_malloc_ab (n_stops,
+			      sizeof (XFixed) + sizeof (XRenderColor));
+	if (unlikely (stops == NULL))
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    colors = (XRenderColor *) (stops + n_stops);
+    for (i = 0; i < gradient->n_stops; i++) {
+	stops[i] =
+	    _cairo_fixed_16_16_from_double (gradient->stops[i].offset);
+
+	colors[i].red   = gradient->stops[i].color.red_short;
+	colors[i].green = gradient->stops[i].color.green_short;
+	colors[i].blue  = gradient->stops[i].color.blue_short;
+	colors[i].alpha = gradient->stops[i].color.alpha_short;
+    }
+
+    /* RENDER does not support gradients with less than 2
+     * stops. If a gradient has only a single stop, duplicate
+     * it to make RENDER happy. */
+    if (gradient->n_stops == 1) {
+	stops[1] =
+	    _cairo_fixed_16_16_from_double (gradient->stops[0].offset);
+
+	colors[1].red   = gradient->stops[0].color.red_short;
+	colors[1].green = gradient->stops[0].color.green_short;
+	colors[1].blue  = gradient->stops[0].color.blue_short;
+	colors[1].alpha = gradient->stops[0].color.alpha_short;
+    }
+
+#if 0
+    /* For some weird reason the X server is sometimes getting
+     * CreateGradient requests with bad length. So far I've only seen
+     * XRenderCreateLinearGradient request with 4 stops sometime end up
+     * with length field matching 0 stops at the server side. I've
+     * looked at the libXrender code and I can't see anything that
+     * could cause this behavior. However, for some reason having a
+     * XSync call here seems to avoid the issue so I'll keep it here
+     * until it's solved.
+     */
+    XSync (display->display, False);
+#endif
+
+    _cairo_gradient_pattern_fit_to_range (gradient, PIXMAN_MAX_INT >> 1, &matrix, extremes);
+
+    if (gradient->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
+	XLinearGradient grad;
+
+	grad.p1.x = _cairo_fixed_16_16_from_double (extremes[0].center.x);
+	grad.p1.y = _cairo_fixed_16_16_from_double (extremes[0].center.y);
+	grad.p2.x = _cairo_fixed_16_16_from_double (extremes[1].center.x);
+	grad.p2.y = _cairo_fixed_16_16_from_double (extremes[1].center.y);
+
+	picture = XRenderCreateLinearGradient (display->display, &grad,
+					       stops, colors,
+					       n_stops);
+    } else {
+	XRadialGradient grad;
+
+	grad.inner.x      = _cairo_fixed_16_16_from_double (extremes[0].center.x);
+	grad.inner.y      = _cairo_fixed_16_16_from_double (extremes[0].center.y);
+	grad.inner.radius = _cairo_fixed_16_16_from_double (extremes[0].radius);
+	grad.outer.x      = _cairo_fixed_16_16_from_double (extremes[1].center.x);
+	grad.outer.y      = _cairo_fixed_16_16_from_double (extremes[1].center.y);
+	grad.outer.radius = _cairo_fixed_16_16_from_double (extremes[1].radius);
+
+	picture = XRenderCreateRadialGradient (display->display, &grad,
+					       stops, colors,
+					       n_stops);
+    }
+
+    if (stops != (XFixed *) buf)
+	free (stops);
+
+    *src_x = *src_y = 0;
+    if (! picture_set_properties (display, picture,
+				  &gradient->base, &gradient->base.matrix,
+				  extents,
+				  src_x, src_y)) {
+	XRenderFreePicture (display->display, picture);
+	return render_pattern (dst, &gradient->base, is_mask, extents, src_x, src_y);
+    }
+
+    return source (dst, picture, None);
+}
+
+static cairo_surface_t *
+color_source (cairo_xlib_surface_t *dst, const cairo_color_t *color)
+{
+    Display *dpy = dst->display->display;
+    XRenderColor xcolor;
+    Picture picture;
+    Pixmap pixmap = None;
+
+    xcolor.red   = color->red_short;
+    xcolor.green = color->green_short;
+    xcolor.blue  = color->blue_short;
+    xcolor.alpha = color->alpha_short;
+
+    if (CAIRO_RENDER_HAS_GRADIENTS(dst->display)) {
+	picture = XRenderCreateSolidFill (dpy, &xcolor);
+    } else {
+	XRenderPictureAttributes pa;
+	int mask = 0;
+
+	pa.repeat = RepeatNormal;
+	mask |= CPRepeat;
+
+	pixmap = XCreatePixmap (dpy, dst->drawable, 1, 1, 32);
+	picture = XRenderCreatePicture (dpy, pixmap,
+					_cairo_xlib_display_get_xrender_format (dst->display, CAIRO_FORMAT_ARGB32),
+					mask, &pa);
+
+	if (CAIRO_RENDER_HAS_FILL_RECTANGLES(dst->display)) {
+	    XRectangle r = { 0, 0, 1, 1};
+	    XRenderFillRectangles (dpy, PictOpSrc, picture, &xcolor, &r, 1);
+	} else {
+	    XGCValues gcv;
+	    GC gc;
+
+	    gc = _cairo_xlib_screen_get_gc (dst->display, dst->screen,
+					    32, pixmap);
+	    if (unlikely (gc == NULL)) {
+		XFreePixmap (dpy, pixmap);
+		return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	    }
+
+	    gcv.foreground = 0;
+	    gcv.foreground |= color->alpha_short >> 8 << 24;
+	    gcv.foreground |= color->red_short   >> 8 << 16;
+	    gcv.foreground |= color->green_short >> 8 << 8;
+	    gcv.foreground |= color->blue_short  >> 8 << 0;
+	    gcv.fill_style = FillSolid;
+
+	    XChangeGC (dpy, gc, GCFillStyle | GCForeground, &gcv);
+	    XFillRectangle (dpy, pixmap, gc, 0, 0, 1, 1);
+
+	    _cairo_xlib_screen_put_gc (dst->display, dst->screen, 32, gc);
+	}
+    }
+
+    return source (dst, picture, pixmap);
+}
+
+static cairo_surface_t *
+alpha_source (cairo_xlib_surface_t *dst, uint8_t alpha)
+{
+    cairo_xlib_display_t *display = dst->display;
+
+    if (display->alpha[alpha] == NULL) {
+	cairo_color_t color;
+
+	color.red_short = color.green_short = color.blue_short = 0;
+	color.alpha_short = alpha << 8 | alpha;
+
+	display->alpha[alpha] = color_source (dst, &color);
+    }
+
+    return cairo_surface_reference (display->alpha[alpha]);
+}
+
+static cairo_surface_t *
+white_source (cairo_xlib_surface_t *dst)
+{
+    cairo_xlib_display_t *display = dst->display;
+
+    if (display->white == NULL)
+	display->white = color_source (dst, CAIRO_COLOR_WHITE);
+
+    return cairo_surface_reference (display->white);
+}
+
+static cairo_surface_t *
+opaque_source (cairo_xlib_surface_t *dst, const cairo_color_t *color)
+{
+    cairo_xlib_display_t *display = dst->display;
+    uint32_t pixel =
+	0xff000000 |
+	color->red_short   >> 8 << 16 |
+	color->green_short >> 8 << 8 |
+	color->blue_short  >> 8 << 0;
+    int i;
+
+    if (display->last_solid_cache[0].color == pixel)
+	return cairo_surface_reference (display->solid[display->last_solid_cache[0].index]);
+
+    for (i = 0; i < 16; i++) {
+	if (display->solid_cache[i] == pixel)
+	    goto done;
+    }
+
+    i = hars_petruska_f54_1_random () % 16;
+    cairo_surface_destroy (display->solid[i]);
+
+    display->solid[i] = color_source (dst, color);
+    display->solid_cache[i] = pixel;
+
+done:
+    display->last_solid_cache[0].color = pixel;
+    display->last_solid_cache[0].index = i;
+    return cairo_surface_reference (display->solid[i]);
+}
+
+static cairo_surface_t *
+transparent_source (cairo_xlib_surface_t *dst, const cairo_color_t *color)
+{
+    cairo_xlib_display_t *display = dst->display;
+    uint32_t pixel =
+	color->alpha_short >> 8 << 24 |
+	color->red_short   >> 8 << 16 |
+	color->green_short >> 8 << 8 |
+	color->blue_short  >> 8 << 0;
+    int i;
+
+    if (display->last_solid_cache[1].color == pixel) {
+    assert (display->solid[display->last_solid_cache[1].index]);
+	return cairo_surface_reference (display->solid[display->last_solid_cache[1].index]);
+    }
+
+    for (i = 16; i < 32; i++) {
+	if (display->solid_cache[i] == pixel)
+	    goto done;
+    }
+
+    i = 16 + (hars_petruska_f54_1_random () % 16);
+    cairo_surface_destroy (display->solid[i]);
+
+    display->solid[i] = color_source (dst, color);
+    display->solid_cache[i] = pixel;
+
+done:
+    display->last_solid_cache[1].color = pixel;
+    display->last_solid_cache[1].index = i;
+    assert (display->solid[i]);
+    return cairo_surface_reference (display->solid[i]);
+}
+
+static cairo_surface_t *
+solid_source (cairo_xlib_surface_t *dst,
+	      const cairo_color_t *color)
+{
+    if ((color->red_short | color->green_short | color->blue_short) <= 0xff)
+	return alpha_source (dst, color->alpha_short >> 8);
+
+    if (CAIRO_ALPHA_SHORT_IS_OPAQUE (color->alpha_short)) {
+	if (color->red_short >= 0xff00 && color->green_short >= 0xff00 && color->blue_short >= 0xff00)
+	    return white_source (dst);
+
+	return opaque_source (dst, color);
+    } else
+	return transparent_source (dst, color);
+}
+
+static cairo_xlib_source_t *init_source (cairo_xlib_surface_t *dst,
+					 cairo_xlib_surface_t *src)
+{
+    Display *dpy = dst->display->display;
+    cairo_xlib_source_t *source = &src->embedded_source;
+
+    /* As these are frequent and meant to be fast, we track pictures for
+     * native surface and minimise update requests.
+     */
+    if (source->picture == None) {
+	XRenderPictureAttributes pa;
+
+	_cairo_surface_init (&source->base,
+			     &cairo_xlib_source_backend,
+			     NULL, /* device */
+			     CAIRO_CONTENT_COLOR_ALPHA,
+			     FALSE); /* is_vector */
+
+	pa.subwindow_mode = IncludeInferiors;
+	source->picture = XRenderCreatePicture (dpy,
+						src->drawable,
+						src->xrender_format,
+						CPSubwindowMode, &pa);
+
+	source->has_component_alpha = 0;
+	source->has_matrix = 0;
+	source->filter = CAIRO_FILTER_NEAREST;
+	source->extend = CAIRO_EXTEND_NONE;
+    }
+
+    return (cairo_xlib_source_t *) cairo_surface_reference (&source->base);
+}
+
+static cairo_surface_t *
+embedded_source (cairo_xlib_surface_t *dst,
+		 const cairo_surface_pattern_t *pattern,
+		 const cairo_rectangle_int_t *extents,
+		 int *src_x, int *src_y,
+		 cairo_xlib_source_t *source)
+{
+    Display *dpy = dst->display->display;
+    cairo_int_status_t status;
+    XTransform xtransform;
+    XRenderPictureAttributes pa;
+    unsigned mask = 0;
+
+    status = _cairo_matrix_to_pixman_matrix_offset (&pattern->base.matrix,
+						    pattern->base.filter,
+						    extents->x + extents->width / 2,
+						    extents->y + extents->height / 2,
+						    (pixman_transform_t *)&xtransform,
+						    src_x, src_y);
+
+    if (status == CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	if (source->has_matrix) {
+	    source->has_matrix = 0;
+	    memcpy (&xtransform, &identity, sizeof (identity));
+	    status = CAIRO_INT_STATUS_SUCCESS;
+	}
+    } else
+	source->has_matrix = 1;
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	XRenderSetPictureTransform (dpy, source->picture, &xtransform);
+
+    if (source->filter != pattern->base.filter) {
+	picture_set_filter (dpy, source->picture, pattern->base.filter);
+	source->filter = pattern->base.filter;
+    }
+
+    if (source->has_component_alpha != pattern->base.has_component_alpha) {
+	pa.component_alpha = pattern->base.has_component_alpha;
+	mask |= CPComponentAlpha;
+	source->has_component_alpha = pattern->base.has_component_alpha;
+    }
+
+    if (source->extend != pattern->base.extend) {
+	pa.repeat = extend_to_repeat (pattern->base.extend);
+	mask |= CPRepeat;
+	source->extend = pattern->base.extend;
+    }
+
+    if (mask)
+	XRenderChangePicture (dpy, source->picture, mask, &pa);
+
+    return &source->base;
+}
+
+static cairo_surface_t *
+subsurface_source (cairo_xlib_surface_t *dst,
+		   const cairo_surface_pattern_t *pattern,
+		   cairo_bool_t is_mask,
+		   const cairo_rectangle_int_t *extents,
+		   const cairo_rectangle_int_t *sample,
+		   int *src_x, int *src_y)
+{
+    cairo_surface_subsurface_t *sub;
+    cairo_xlib_surface_t *src;
+    cairo_xlib_source_t *source;
+    Display *dpy = dst->display->display;
+    cairo_int_status_t status;
+    cairo_surface_pattern_t local_pattern;
+    XTransform xtransform;
+    XRenderPictureAttributes pa;
+    unsigned mask = 0;
+
+    sub = (cairo_surface_subsurface_t *) pattern->surface;
+
+    if (sample->x >= 0 && sample->y >= 0 &&
+	sample->x + sample->width  <= sub->extents.width &&
+	sample->y + sample->height <= sub->extents.height)
+    {
+	src = (cairo_xlib_surface_t *) sub->target;
+	status = _cairo_surface_flush (&src->base, 0);
+	if (unlikely (status))
+	    return _cairo_surface_create_in_error (status);
+
+	if (pattern->base.filter == CAIRO_FILTER_NEAREST &&
+	    _cairo_matrix_is_translation (&pattern->base.matrix))
+	{
+	    *src_x += pattern->base.matrix.x0 + sub->extents.x;
+	    *src_y += pattern->base.matrix.y0 + sub->extents.y;
+
+	    _cairo_xlib_surface_ensure_picture (src);
+	    return cairo_surface_reference (&src->base);
+	}
+	else
+	{
+	    cairo_surface_pattern_t local_pattern = *pattern;
+	    local_pattern.base.matrix.x0 += sub->extents.x;
+	    local_pattern.base.matrix.y0 += sub->extents.y;
+	    local_pattern.base.extend = CAIRO_EXTEND_NONE;
+	    return embedded_source (dst, &local_pattern, extents,
+				    src_x, src_y, init_source (dst, src));
+	}
+    }
+
+    if (sub->snapshot && sub->snapshot->type == CAIRO_SURFACE_TYPE_XLIB) {
+	src = (cairo_xlib_surface_t *) cairo_surface_reference (sub->snapshot);
+	source = &src->embedded_source;
+    } else {
+	src = (cairo_xlib_surface_t *)
+	    _cairo_surface_create_scratch (&dst->base,
+					   sub->base.content,
+					   sub->extents.width,
+					   sub->extents.height,
+					   NULL);
+	if (src->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	    cairo_surface_destroy (&src->base);
+	    return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	_cairo_pattern_init_for_surface (&local_pattern, sub->target);
+	cairo_matrix_init_translate (&local_pattern.base.matrix,
+				     sub->extents.x, sub->extents.y);
+	local_pattern.base.filter = CAIRO_FILTER_NEAREST;
+	status = _cairo_surface_paint (&src->base,
+				       CAIRO_OPERATOR_SOURCE,
+				       &local_pattern.base,
+				       NULL);
+	_cairo_pattern_fini (&local_pattern.base);
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&src->base);
+	    return _cairo_surface_create_in_error (status);
+	}
+
+	_cairo_xlib_surface_ensure_picture (src);
+	_cairo_surface_subsurface_set_snapshot (&sub->base, &src->base);
+
+	source = &src->embedded_source;
+	source->has_component_alpha = 0;
+	source->has_matrix = 0;
+	source->filter = CAIRO_FILTER_NEAREST;
+	source->extend = CAIRO_EXTEND_NONE;
+    }
+
+    status = _cairo_matrix_to_pixman_matrix_offset (&pattern->base.matrix,
+						    pattern->base.filter,
+						    extents->x + extents->width / 2,
+						    extents->y + extents->height / 2,
+						    (pixman_transform_t *)&xtransform,
+						    src_x, src_y);
+    if (status == CAIRO_INT_STATUS_NOTHING_TO_DO) {
+	if (source->has_matrix) {
+	    source->has_matrix = 0;
+	    memcpy (&xtransform, &identity, sizeof (identity));
+	    status = CAIRO_INT_STATUS_SUCCESS;
+	}
+    } else
+	source->has_matrix = 1;
+    if (status == CAIRO_INT_STATUS_SUCCESS)
+	XRenderSetPictureTransform (dpy, src->picture, &xtransform);
+
+    if (source->filter != pattern->base.filter) {
+	picture_set_filter (dpy, src->picture, pattern->base.filter);
+	source->filter = pattern->base.filter;
+    }
+
+    if (source->has_component_alpha != pattern->base.has_component_alpha) {
+	pa.component_alpha = pattern->base.has_component_alpha;
+	mask |= CPComponentAlpha;
+	source->has_component_alpha = pattern->base.has_component_alpha;
+    }
+
+    if (source->extend != pattern->base.extend) {
+	pa.repeat = extend_to_repeat (pattern->base.extend);
+	mask |= CPRepeat;
+	source->extend = pattern->base.extend;
+    }
+
+    if (mask)
+	XRenderChangePicture (dpy, src->picture, mask, &pa);
+
+    return &src->base;
+}
+
+static cairo_surface_t *
+native_source (cairo_xlib_surface_t *dst,
+	       const cairo_surface_pattern_t *pattern,
+	       cairo_bool_t is_mask,
+	       const cairo_rectangle_int_t *extents,
+	       const cairo_rectangle_int_t *sample,
+	       int *src_x, int *src_y)
+{
+    cairo_xlib_surface_t *src;
+    cairo_int_status_t status;
+
+    if (_cairo_surface_is_subsurface (pattern->surface))
+	return subsurface_source (dst, pattern, is_mask,
+				  extents, sample,
+				  src_x, src_y);
+
+    src = unwrap_source (pattern);
+    status = _cairo_surface_flush (&src->base, 0);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (pattern->base.filter == CAIRO_FILTER_NEAREST &&
+	sample->x >= 0 && sample->y >= 0 &&
+	sample->x + sample->width  <= src->width &&
+	sample->y + sample->height <= src->height &&
+	_cairo_matrix_is_translation (&pattern->base.matrix))
+    {
+	*src_x += pattern->base.matrix.x0;
+	*src_y += pattern->base.matrix.y0;
+	_cairo_xlib_surface_ensure_picture (src);
+	return cairo_surface_reference (&src->base);
+    }
+
+    return embedded_source (dst, pattern, extents, src_x, src_y,
+			    init_source (dst, src));
+}
+
+static cairo_surface_t *
+recording_pattern_get_surface (const cairo_pattern_t *pattern)
+{
+    cairo_surface_t *surface;
+
+    surface = ((const cairo_surface_pattern_t *) pattern)->surface;
+
+    if (_cairo_surface_is_paginated (surface))
+	return cairo_surface_reference (_cairo_paginated_surface_get_recording (surface));
+
+    if (_cairo_surface_is_snapshot (surface))
+	return _cairo_surface_snapshot_get_target (surface);
+
+    return cairo_surface_reference (surface);
+}
+
+static cairo_surface_t *
+record_source (cairo_xlib_surface_t *dst,
+	       const cairo_surface_pattern_t *pattern,
+	       cairo_bool_t is_mask,
+	       const cairo_rectangle_int_t *extents,
+	       const cairo_rectangle_int_t *sample,
+	       int *src_x, int *src_y)
+{
+    cairo_xlib_surface_t *src;
+    cairo_surface_t *recording;
+    cairo_matrix_t matrix, m;
+    cairo_status_t status;
+    cairo_rectangle_int_t upload, limit;
+
+    upload = *sample;
+    if (_cairo_surface_get_extents (pattern->surface, &limit) &&
+	! _cairo_rectangle_intersect (&upload, &limit))
+    {
+	if (pattern->base.extend == CAIRO_EXTEND_NONE)
+	    return alpha_source (dst, 0);
+
+	upload = limit;
+    }
+
+    src = (cairo_xlib_surface_t *)
+	_cairo_surface_create_scratch (&dst->base,
+				       pattern->surface->content,
+				       upload.width,
+				       upload.height,
+				       NULL);
+    if (src->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	cairo_surface_destroy (&src->base);
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    cairo_matrix_init_translate (&matrix, upload.x, upload.y);
+    recording = recording_pattern_get_surface (&pattern->base),
+    status = _cairo_recording_surface_replay_with_clip (recording,
+							&matrix, &src->base,
+							NULL);
+    cairo_surface_destroy (recording);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&src->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    matrix = pattern->base.matrix;
+    if (upload.x | upload.y) {
+	cairo_matrix_init_translate (&m, -upload.x, -upload.y);
+	cairo_matrix_multiply (&matrix, &matrix, &m);
+    }
+
+    _cairo_xlib_surface_ensure_picture (src);
+    if (! picture_set_properties (src->display, src->picture,
+				  &pattern->base, &matrix, extents,
+				  src_x, src_y))
+    {
+	cairo_surface_destroy (&src->base);
+	return render_pattern (dst, &pattern->base, is_mask,
+			       extents, src_x, src_y);
+    }
+
+    return &src->base;
+}
+
+static cairo_surface_t *
+surface_source (cairo_xlib_surface_t *dst,
+		const cairo_surface_pattern_t *pattern,
+		cairo_bool_t is_mask,
+		const cairo_rectangle_int_t *extents,
+		const cairo_rectangle_int_t *sample,
+		int *src_x, int *src_y)
+{
+    cairo_surface_t *src;
+    cairo_xlib_surface_t *xsrc;
+    cairo_surface_pattern_t local_pattern;
+    cairo_status_t status;
+    cairo_rectangle_int_t upload, limit;
+
+    src = pattern->surface;
+    if (src->type == CAIRO_SURFACE_TYPE_IMAGE &&
+	src->device == dst->base.device &&
+	_cairo_xlib_shm_surface_get_pixmap (src)) {
+	cairo_xlib_proxy_t *proxy;
+
+	proxy = _cairo_malloc (sizeof(*proxy));
+	if (unlikely (proxy == NULL))
+	    return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+	_cairo_surface_init (&proxy->source.base,
+			     &cairo_xlib_proxy_backend,
+			     dst->base.device,
+			     src->content,
+			     src->is_vector);
+
+	proxy->source.dpy = dst->display->display;
+	proxy->source.picture = XRenderCreatePicture (proxy->source.dpy,
+						      _cairo_xlib_shm_surface_get_pixmap (src),
+						      _cairo_xlib_shm_surface_get_xrender_format (src),
+						      0, NULL);
+	proxy->source.pixmap = None;
+
+	proxy->source.has_component_alpha = 0;
+	proxy->source.has_matrix = 0;
+	proxy->source.filter = CAIRO_FILTER_NEAREST;
+	proxy->source.extend = CAIRO_EXTEND_NONE;
+	proxy->owner = cairo_surface_reference (src);
+
+	return embedded_source (dst, pattern, extents, src_x, src_y,
+				&proxy->source);
+    }
+
+    upload = *sample;
+    if (_cairo_surface_get_extents (pattern->surface, &limit)) {
+	if (pattern->base.extend == CAIRO_EXTEND_NONE) {
+	    if (! _cairo_rectangle_intersect (&upload, &limit))
+		return alpha_source (dst, 0);
+	} else if (pattern->base.extend == CAIRO_EXTEND_PAD) {
+	    if (! _cairo_rectangle_intersect (&upload, &limit))
+		upload = limit;
+	} else {
+	    if (upload.x < limit.x ||
+		upload.x + upload.width > limit.x + limit.width ||
+		upload.y < limit.y ||
+		upload.y + upload.height > limit.y + limit.height)
+	    {
+		upload = limit;
+	    }
+	}
+    }
+
+    xsrc = (cairo_xlib_surface_t *)
+	    _cairo_surface_create_scratch (&dst->base,
+					   src->content,
+					   upload.width,
+					   upload.height,
+					   NULL);
+    if (xsrc->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	cairo_surface_destroy (src);
+	cairo_surface_destroy (&xsrc->base);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    if (_cairo_surface_is_image (src)) {
+	status = _cairo_xlib_surface_draw_image (xsrc, (cairo_image_surface_t *)src,
+						 upload.x, upload.y,
+						 upload.width, upload.height,
+						 0, 0);
+    } else {
+	cairo_image_surface_t *image;
+	cairo_rectangle_int_t map_extents = { 0,0, upload.width,upload.height };
+
+	image = _cairo_surface_map_to_image (&xsrc->base, &map_extents);
+
+	_cairo_pattern_init_for_surface (&local_pattern, pattern->surface);
+	cairo_matrix_init_translate (&local_pattern.base.matrix,
+				     upload.x, upload.y);
+
+	status = _cairo_surface_paint (&image->base,
+				       CAIRO_OPERATOR_SOURCE,
+				       &local_pattern.base,
+				       NULL);
+	_cairo_pattern_fini (&local_pattern.base);
+
+	status = _cairo_surface_unmap_image (&xsrc->base, image);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&xsrc->base);
+	    return _cairo_surface_create_in_error (status);
+	}
+
+	status = _cairo_xlib_surface_put_shm (xsrc);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&xsrc->base);
+	    return _cairo_surface_create_in_error (status);
+	}
+    }
+
+    _cairo_pattern_init_static_copy (&local_pattern.base, &pattern->base);
+    if (upload.x | upload.y) {
+	cairo_matrix_t m;
+	cairo_matrix_init_translate (&m, -upload.x, -upload.y);
+	cairo_matrix_multiply (&local_pattern.base.matrix,
+			       &local_pattern.base.matrix,
+			       &m);
+    }
+
+    *src_x = *src_y = 0;
+    _cairo_xlib_surface_ensure_picture (xsrc);
+    if (! picture_set_properties (xsrc->display,
+				  xsrc->picture,
+				  &local_pattern.base,
+				  &local_pattern.base.matrix,
+				  extents,
+				  src_x, src_y))
+    {
+	cairo_surface_destroy (&xsrc->base);
+	return render_pattern (dst, &pattern->base,
+			       is_mask, extents,
+			       src_x, src_y);
+    }
+
+    return &xsrc->base;
+}
+
+static cairo_bool_t
+pattern_is_supported (cairo_xlib_display_t *display,
+		      const cairo_pattern_t *pattern)
+{
+    if (pattern->type == CAIRO_PATTERN_TYPE_MESH)
+	return FALSE;
+
+    if (display->buggy_pad_reflect) {
+	if (pattern->extend == CAIRO_EXTEND_REPEAT || pattern->extend == CAIRO_EXTEND_PAD)
+	    return FALSE;
+    }
+
+    if (display->buggy_gradients) {
+	if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR || pattern->type == CAIRO_PATTERN_TYPE_RADIAL)
+	    return FALSE;
+    }
+
+    switch (pattern->filter) {
+    case CAIRO_FILTER_FAST:
+    case CAIRO_FILTER_NEAREST:
+	return CAIRO_RENDER_HAS_PICTURE_TRANSFORM (display) ||
+	    _cairo_matrix_is_integer_translation (&pattern->matrix, NULL, NULL);
+    case CAIRO_FILTER_GOOD:
+	return CAIRO_RENDER_HAS_FILTER_GOOD (display);
+    case CAIRO_FILTER_BEST:
+	return CAIRO_RENDER_HAS_FILTER_BEST (display);
+    case CAIRO_FILTER_BILINEAR:
+    case CAIRO_FILTER_GAUSSIAN:
+    default:
+	return CAIRO_RENDER_HAS_FILTERS (display);
+    }
+}
+
+cairo_surface_t *
+_cairo_xlib_source_create_for_pattern (cairo_surface_t *_dst,
+				       const cairo_pattern_t *pattern,
+				       cairo_bool_t is_mask,
+				       const cairo_rectangle_int_t *extents,
+				       const cairo_rectangle_int_t *sample,
+				       int *src_x, int *src_y)
+{
+    cairo_xlib_surface_t *dst = (cairo_xlib_surface_t *)_dst;
+
+    *src_x = *src_y = 0;
+
+    if (pattern == NULL || pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
+	if (pattern == NULL)
+	    pattern = &_cairo_pattern_white.base;
+
+	return solid_source (dst, &((cairo_solid_pattern_t *)pattern)->color);
+    }
+
+    if (pattern_is_supported (dst->display, pattern)) {
+	if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    cairo_surface_pattern_t *spattern = (cairo_surface_pattern_t *)pattern;
+	    if (spattern->surface->type == CAIRO_SURFACE_TYPE_XLIB &&
+		_cairo_xlib_surface_same_screen (dst,
+						 unwrap_source (spattern)))
+		return native_source (dst, spattern, is_mask,
+				      extents, sample,
+				      src_x, src_y);
+
+	    if (spattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+		return record_source (dst, spattern, is_mask,
+				      extents, sample,
+				      src_x, src_y);
+
+	    return surface_source (dst, spattern, is_mask,
+				   extents, sample,
+				   src_x, src_y);
+	}
+
+	if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR ||
+	    pattern->type == CAIRO_PATTERN_TYPE_RADIAL)
+	{
+	    cairo_gradient_pattern_t *gpattern = (cairo_gradient_pattern_t *)pattern;
+	    return gradient_source (dst, gpattern, is_mask, extents, src_x, src_y);
+	}
+    }
+
+    return render_pattern (dst, pattern, is_mask, extents, src_x, src_y);
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-surface-private.h b/libs/cairo-1.16.0/src/cairo-xlib-surface-private.h
new file mode 100644
index 0000000..83d9b63
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-surface-private.h
@@ -0,0 +1,44 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ */
+
+#ifndef CAIRO_XLIB_SURFACE_PRIVATE_H
+#define CAIRO_XLIB_SURFACE_PRIVATE_H
+
+#include "cairo-xlib-xrender-private.h"
+#include "cairo-xlib.h"
+#include "cairo-xlib-private.h"
+
+#include "cairo-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+
+#endif /* CAIRO_XLIB_SURFACE_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-surface-shm.c b/libs/cairo-1.16.0/src/cairo-xlib-surface-shm.c
new file mode 100644
index 0000000..1ee1e3d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-surface-shm.c
@@ -0,0 +1,1460 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-surface-private.h"
+
+#if !HAVE_X11_EXTENSIONS_XSHM_H || !(HAVE_X11_EXTENSIONS_SHMPROTO_H || HAVE_X11_EXTENSIONS_SHMSTR_H)
+void _cairo_xlib_display_init_shm (cairo_xlib_display_t *display) {}
+
+cairo_surface_t *
+_cairo_xlib_surface_get_shm (cairo_xlib_surface_t *surface,
+			     cairo_bool_t overwrite)
+{
+    return NULL;
+}
+
+cairo_int_status_t
+_cairo_xlib_surface_put_shm (cairo_xlib_surface_t *surface)
+{
+    assert (!surface->fallback);
+    return CAIRO_INT_STATUS_SUCCESS;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_create_shm (cairo_xlib_surface_t *other,
+				pixman_format_code_t format,
+				int width, int height)
+{
+    return NULL;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_create_shm__image (cairo_xlib_surface_t *surface,
+				       pixman_format_code_t format,
+				       int width, int height)
+{
+    return NULL;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_create_similar_shm (void *other,
+					cairo_format_t format,
+					int width, int height)
+{
+    return cairo_image_surface_create (format, width, height);
+}
+
+void
+_cairo_xlib_shm_surface_mark_active (cairo_surface_t *_shm)
+{
+    ASSERT_NOT_REACHED;
+}
+
+void
+_cairo_xlib_shm_surface_get_ximage (cairo_surface_t *surface,
+				    XImage *ximage)
+{
+    ASSERT_NOT_REACHED;
+}
+
+void *
+_cairo_xlib_shm_surface_get_obdata (cairo_surface_t *surface)
+{
+    ASSERT_NOT_REACHED;
+    return NULL;
+}
+
+Pixmap
+_cairo_xlib_shm_surface_get_pixmap (cairo_surface_t *surface)
+{
+    ASSERT_NOT_REACHED;
+    return 0;
+}
+
+XRenderPictFormat *
+_cairo_xlib_shm_surface_get_xrender_format (cairo_surface_t *surface)
+{
+    ASSERT_NOT_REACHED;
+    return NULL;
+}
+
+cairo_bool_t
+_cairo_xlib_shm_surface_is_active (cairo_surface_t *surface)
+{
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+cairo_bool_t
+_cairo_xlib_shm_surface_is_idle (cairo_surface_t *surface)
+{
+    ASSERT_NOT_REACHED;
+    return TRUE;
+}
+
+void _cairo_xlib_display_fini_shm (cairo_xlib_display_t *display) {}
+
+#else
+
+#include "cairo-damage-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-mempool-private.h"
+
+#include <X11/Xlibint.h>
+#include <X11/Xproto.h>
+#include <X11/extensions/XShm.h>
+#if HAVE_X11_EXTENSIONS_SHMPROTO_H
+#include <X11/extensions/shmproto.h>
+#elif HAVE_X11_EXTENSIONS_SHMSTR_H
+#include <X11/extensions/shmstr.h>
+#endif
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#define MIN_PIXMAP_SIZE 4096
+
+#define MIN_BITS 8
+#define MIN_SIZE (1<<(MIN_BITS-1))
+
+typedef struct _cairo_xlib_shm cairo_xlib_shm_t;
+typedef struct _cairo_xlib_shm_info cairo_xlib_shm_info_t;
+typedef struct _cairo_xlib_shm_surface cairo_xlib_shm_surface_t;
+
+struct _cairo_xlib_shm {
+    cairo_mempool_t mem;
+
+    XShmSegmentInfo shm;
+    unsigned long attached;
+    cairo_list_t link;
+};
+
+struct _cairo_xlib_shm_info {
+    unsigned long last_request;
+    void *mem;
+    size_t size;
+    cairo_xlib_shm_t *pool;
+};
+
+struct _cairo_xlib_shm_surface {
+    cairo_image_surface_t image;
+
+    cairo_list_t link;
+    cairo_xlib_shm_info_t *info;
+    Pixmap pixmap;
+    unsigned long active;
+    int idle;
+};
+
+/* the parent is always given by index/2 */
+#define PQ_PARENT_INDEX(i) ((i) >> 1)
+#define PQ_FIRST_ENTRY 1
+
+/* left and right children are index * 2 and (index * 2) +1 respectively */
+#define PQ_LEFT_CHILD_INDEX(i) ((i) << 1)
+
+#define PQ_TOP(pq) ((pq)->elements[PQ_FIRST_ENTRY])
+
+struct pqueue {
+    int size, max_size;
+    cairo_xlib_shm_info_t **elements;
+};
+
+struct _cairo_xlib_shm_display {
+    int has_pixmaps;
+    int opcode;
+    int event;
+
+    Window window;
+    unsigned long last_request;
+    unsigned long last_event;
+
+    cairo_list_t surfaces;
+
+    cairo_list_t pool;
+    struct pqueue info;
+};
+
+static inline cairo_bool_t
+seqno_passed (unsigned long a, unsigned long b)
+{
+    return (long)(b - a) >= 0;
+}
+
+static inline cairo_bool_t
+seqno_before (unsigned long a, unsigned long b)
+{
+    return (long)(b - a) > 0;
+}
+
+static inline cairo_bool_t
+seqno_after (unsigned long a, unsigned long b)
+{
+    return (long)(a - b) > 0;
+}
+
+static inline cairo_status_t
+_pqueue_init (struct pqueue *pq)
+{
+    pq->max_size = 32;
+    pq->size = 0;
+
+    pq->elements = _cairo_malloc_ab (pq->max_size,
+				     sizeof (cairo_xlib_shm_info_t *));
+    if (unlikely (pq->elements == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    PQ_TOP(pq) = NULL;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline void
+_pqueue_fini (struct pqueue *pq)
+{
+    free (pq->elements);
+}
+
+static cairo_status_t
+_pqueue_grow (struct pqueue *pq)
+{
+    cairo_xlib_shm_info_t **new_elements;
+
+    new_elements = _cairo_realloc_ab (pq->elements,
+				      2 * pq->max_size,
+				      sizeof (cairo_xlib_shm_info_t *));
+    if (unlikely (new_elements == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    pq->elements = new_elements;
+    pq->max_size *= 2;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_pqueue_shrink (struct pqueue *pq, int min_size)
+{
+    cairo_xlib_shm_info_t **new_elements;
+
+    if (min_size > pq->max_size)
+	return;
+
+    new_elements = _cairo_realloc_ab (pq->elements,
+				      min_size,
+				      sizeof (cairo_xlib_shm_info_t *));
+    if (unlikely (new_elements == NULL))
+	return;
+
+    pq->elements = new_elements;
+    pq->max_size = min_size;
+}
+
+static inline cairo_status_t
+_pqueue_push (struct pqueue *pq, cairo_xlib_shm_info_t *info)
+{
+    cairo_xlib_shm_info_t **elements;
+    int i, parent;
+
+    if (unlikely (pq->size + 1 == pq->max_size)) {
+	cairo_status_t status;
+
+	status = _pqueue_grow (pq);
+	if (unlikely (status))
+	    return status;
+    }
+
+    elements = pq->elements;
+
+    for (i = ++pq->size;
+	 i != PQ_FIRST_ENTRY &&
+	 info->last_request < elements[parent = PQ_PARENT_INDEX (i)]->last_request;
+	 i = parent)
+    {
+	elements[i] = elements[parent];
+    }
+
+    elements[i] = info;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline void
+_pqueue_pop (struct pqueue *pq)
+{
+    cairo_xlib_shm_info_t **elements = pq->elements;
+    cairo_xlib_shm_info_t *tail;
+    int child, i;
+
+    tail = elements[pq->size--];
+    if (pq->size == 0) {
+	elements[PQ_FIRST_ENTRY] = NULL;
+	_pqueue_shrink (pq, 32);
+	return;
+    }
+
+    for (i = PQ_FIRST_ENTRY;
+	 (child = PQ_LEFT_CHILD_INDEX (i)) <= pq->size;
+	 i = child)
+    {
+	if (child != pq->size &&
+	    elements[child+1]->last_request < elements[child]->last_request)
+	{
+	    child++;
+	}
+
+	if (elements[child]->last_request >= tail->last_request)
+	    break;
+
+	elements[i] = elements[child];
+    }
+    elements[i] = tail;
+}
+
+static cairo_bool_t _x_error_occurred;
+
+static int
+_check_error_handler (Display     *display,
+		     XErrorEvent *event)
+{
+    _x_error_occurred = TRUE;
+    return False; /* ignored */
+}
+
+static cairo_bool_t
+can_use_shm (Display *dpy, int *has_pixmap)
+{
+    XShmSegmentInfo shm;
+    int (*old_handler) (Display *display, XErrorEvent *event);
+    Status success;
+    int major, minor;
+
+    if (! XShmQueryExtension (dpy))
+	return FALSE;
+
+    XShmQueryVersion (dpy, &major, &minor, has_pixmap);
+
+    shm.shmid = shmget (IPC_PRIVATE, 0x1000, IPC_CREAT | 0600);
+    if (shm.shmid == -1)
+	return FALSE;
+
+    shm.readOnly = FALSE;
+    shm.shmaddr = shmat (shm.shmid, NULL, 0);
+    if (shm.shmaddr == (char *) -1) {
+	shmctl (shm.shmid, IPC_RMID, NULL);
+	return FALSE;
+    }
+
+    assert (CAIRO_MUTEX_IS_LOCKED (_cairo_xlib_display_mutex));
+    _x_error_occurred = FALSE;
+
+    XLockDisplay (dpy);
+    XSync (dpy, False);
+    old_handler = XSetErrorHandler (_check_error_handler);
+
+    success = XShmAttach (dpy, &shm);
+    if (success)
+	XShmDetach (dpy, &shm);
+
+    XSync (dpy, False);
+    XSetErrorHandler (old_handler);
+    XUnlockDisplay (dpy);
+
+    shmctl (shm.shmid, IPC_RMID, NULL);
+    shmdt (shm.shmaddr);
+
+    return success && ! _x_error_occurred;
+}
+
+static inline Display *
+peek_display (cairo_device_t *device)
+{
+    return ((cairo_xlib_display_t *)device)->display;
+}
+
+static inline unsigned long
+peek_processed (cairo_device_t *device)
+{
+    return LastKnownRequestProcessed (peek_display(device));
+}
+
+static void
+_cairo_xlib_display_shm_pool_destroy (cairo_xlib_display_t *display,
+				      cairo_xlib_shm_t *pool)
+{
+    shmdt (pool->shm.shmaddr);
+    if (display->display) /* may be called after CloseDisplay */
+	XShmDetach (display->display, &pool->shm);
+
+    _cairo_mempool_fini (&pool->mem);
+
+    cairo_list_del (&pool->link);
+    free (pool);
+}
+
+static void send_event(cairo_xlib_display_t *display,
+		       cairo_xlib_shm_info_t *info,
+		       unsigned long seqno)
+{
+    XShmCompletionEvent ev;
+
+    if (! seqno_after (seqno, display->shm->last_event))
+	return;
+
+    ev.type = display->shm->event;
+    ev.send_event = 1; /* XXX or lie? */
+    ev.serial = XNextRequest (display->display);
+    ev.drawable = display->shm->window;
+    ev.major_code = display->shm->opcode;
+    ev.minor_code = X_ShmPutImage;
+    ev.shmseg = info->pool->shm.shmid;
+    ev.offset = (char *)info->mem - (char *)info->pool->shm.shmaddr;
+
+    XSendEvent (display->display, ev.drawable, False, 0, (XEvent *)&ev);
+
+    display->shm->last_event = ev.serial;
+}
+
+static void _cairo_xlib_display_sync (cairo_xlib_display_t *display)
+{
+    cairo_xlib_shm_info_t *info;
+    struct pqueue *pq = &display->shm->info;
+
+    XSync (display->display, False);
+
+    while ((info = PQ_TOP(pq))) {
+	_cairo_mempool_free (&info->pool->mem, info->mem);
+	_pqueue_pop (&display->shm->info);
+	free (info);
+    }
+}
+
+static void
+_cairo_xlib_shm_info_cleanup (cairo_xlib_display_t *display)
+{
+    cairo_xlib_shm_info_t *info;
+    Display *dpy = display->display;
+    struct pqueue *pq = &display->shm->info;
+    unsigned long processed;
+
+    if (PQ_TOP(pq) == NULL)
+	return;
+
+    XEventsQueued (dpy, QueuedAfterReading);
+    processed = LastKnownRequestProcessed (dpy);
+
+    info = PQ_TOP(pq);
+    do {
+	if (! seqno_passed (info->last_request, processed)) {
+	    send_event (display, info, display->shm->last_request);
+	    return;
+	}
+
+	_cairo_mempool_free (&info->pool->mem, info->mem);
+	_pqueue_pop (&display->shm->info);
+	free (info);
+    } while ((info = PQ_TOP(pq)));
+}
+
+static cairo_xlib_shm_t *
+_cairo_xlib_shm_info_find (cairo_xlib_display_t *display, size_t size,
+			   void **ptr, unsigned long *last_request)
+{
+    cairo_xlib_shm_info_t *info;
+    struct pqueue *pq = &display->shm->info;
+
+    if (PQ_TOP(pq) == NULL)
+	return NULL;
+
+    info = PQ_TOP(pq);
+    do {
+	cairo_xlib_shm_t *pool = info->pool;
+
+	*last_request = info->last_request;
+
+	_pqueue_pop (&display->shm->info);
+	_cairo_mempool_free (&pool->mem, info->mem);
+	free (info);
+
+	if (pool->mem.free_bytes >= size) {
+	    void *mem = _cairo_mempool_alloc (&pool->mem, size);
+	    if (mem != NULL) {
+		*ptr = mem;
+		return pool;
+	    }
+	}
+    } while ((info = PQ_TOP(pq)));
+
+    return NULL;
+}
+
+static cairo_xlib_shm_t *
+_cairo_xlib_shm_pool_find (cairo_xlib_display_t *display,
+			   size_t size,
+			   void **ptr)
+{
+    cairo_xlib_shm_t *pool;
+
+    cairo_list_foreach_entry (pool, cairo_xlib_shm_t, &display->shm->pool, link) {
+	if (pool->mem.free_bytes >= size) {
+	    void *mem = _cairo_mempool_alloc (&pool->mem, size);
+	    if (mem != NULL) {
+		*ptr = mem;
+		return pool;
+	    }
+	}
+    }
+
+    return NULL;
+}
+
+static void
+_cairo_xlib_shm_pool_cleanup (cairo_xlib_display_t *display)
+{
+    cairo_xlib_shm_t *pool, *next;
+    unsigned long processed;
+
+    processed = LastKnownRequestProcessed (display->display);
+
+    cairo_list_foreach_entry_safe (pool, next, cairo_xlib_shm_t,
+				   &display->shm->pool, link) {
+	if (! seqno_passed (pool->attached, processed))
+	    break;
+
+	if (pool->mem.free_bytes == pool->mem.max_bytes)
+	    _cairo_xlib_display_shm_pool_destroy (display, pool);
+    }
+}
+
+static cairo_xlib_shm_t *
+_cairo_xlib_shm_pool_create(cairo_xlib_display_t *display,
+			    size_t size, void **ptr)
+{
+    Display *dpy = display->display;
+    cairo_xlib_shm_t *pool;
+    size_t bytes, maxbits = 16, minbits = MIN_BITS;
+    Status success;
+
+    pool = _cairo_malloc (sizeof (cairo_xlib_shm_t));
+    if (pool == NULL)
+	return NULL;
+
+    bytes = 1 << maxbits;
+    while (bytes <= size)
+	bytes <<= 1, maxbits++;
+    bytes <<= 3;
+
+    minbits += (maxbits - 16) / 2;
+
+    pool->shm.shmid = shmget (IPC_PRIVATE, bytes, IPC_CREAT | 0600);
+    while (pool->shm.shmid == -1 && bytes >= 2*size) {
+	bytes >>= 1;
+	pool->shm.shmid = shmget (IPC_PRIVATE, bytes, IPC_CREAT | 0600);
+    }
+    if (pool->shm.shmid == -1)
+	goto cleanup;
+
+    pool->shm.readOnly = FALSE;
+    pool->shm.shmaddr = shmat (pool->shm.shmid, NULL, 0);
+    if (pool->shm.shmaddr == (char *) -1) {
+	shmctl (pool->shm.shmid, IPC_RMID, NULL);
+	goto cleanup;
+    }
+
+    pool->attached = XNextRequest (dpy);
+    success = XShmAttach (dpy, &pool->shm);
+#if !IPC_RMID_DEFERRED_RELEASE
+    XSync (dpy, FALSE);
+#endif
+    shmctl (pool->shm.shmid, IPC_RMID, NULL);
+
+    if (! success)
+	goto cleanup_shm;
+
+    if (_cairo_mempool_init (&pool->mem, pool->shm.shmaddr, bytes,
+			     minbits, maxbits - minbits + 1))
+	goto cleanup_detach;
+
+    cairo_list_add (&pool->link, &display->shm->pool);
+
+    *ptr = _cairo_mempool_alloc (&pool->mem, size);
+    assert (*ptr != NULL);
+    return pool;
+
+cleanup_detach:
+    XShmDetach (dpy, &pool->shm);
+cleanup_shm:
+    shmdt (pool->shm.shmaddr);
+cleanup:
+    free (pool);
+    return NULL;
+}
+
+static cairo_xlib_shm_info_t *
+_cairo_xlib_shm_info_create (cairo_xlib_display_t *display,
+			     size_t size, cairo_bool_t will_sync)
+{
+    cairo_xlib_shm_info_t *info;
+    cairo_xlib_shm_t *pool;
+    unsigned long last_request = 0;
+    void *mem = NULL;
+
+    _cairo_xlib_shm_info_cleanup (display);
+    pool = _cairo_xlib_shm_pool_find (display, size, &mem);
+    _cairo_xlib_shm_pool_cleanup (display);
+
+    if (pool == NULL && will_sync)
+	pool = _cairo_xlib_shm_info_find (display, size, &mem, &last_request);
+    if (pool == NULL)
+	pool = _cairo_xlib_shm_pool_create (display, size, &mem);
+    if (pool == NULL)
+	return NULL;
+
+    assert (mem != NULL);
+
+    info = _cairo_malloc (sizeof (*info));
+    if (info == NULL) {
+	_cairo_mempool_free (&pool->mem, mem);
+	return NULL;
+    }
+
+    info->pool = pool;
+    info->mem = mem;
+    info->size = size;
+    info->last_request = last_request;
+
+    return info;
+}
+
+static cairo_status_t
+_cairo_xlib_shm_surface_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_xlib_shm_surface_t *shm = abstract_surface;
+    cairo_xlib_display_t *display;
+    Display *dpy;
+    cairo_status_t status;
+
+    if (shm->active == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (shm->image.base._finishing)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (seqno_passed (shm->active, peek_processed (shm->image.base.device))) {
+	shm->active = 0;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    status = _cairo_xlib_display_acquire (shm->image.base.device, &display);
+    if (unlikely (status))
+	return status;
+
+    send_event (display, shm->info, shm->active);
+
+    dpy = display->display;
+    XEventsQueued (dpy, QueuedAfterReading);
+    while (! seqno_passed (shm->active, LastKnownRequestProcessed (dpy))) {
+	LockDisplay(dpy);
+	_XReadEvents(dpy);
+	UnlockDisplay(dpy);
+    }
+
+    cairo_device_release (&display->base);
+    shm->active = 0;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline cairo_bool_t
+active (cairo_xlib_shm_surface_t *shm, Display *dpy)
+{
+    return (shm->active &&
+	    ! seqno_passed (shm->active, LastKnownRequestProcessed (dpy)));
+}
+
+static cairo_status_t
+_cairo_xlib_shm_surface_finish (void *abstract_surface)
+{
+    cairo_xlib_shm_surface_t *shm = abstract_surface;
+    cairo_xlib_display_t *display;
+    cairo_status_t status;
+
+    if (shm->image.base.damage) {
+	_cairo_damage_destroy (shm->image.base.damage);
+	shm->image.base.damage = _cairo_damage_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+    }
+
+    status = _cairo_xlib_display_acquire (shm->image.base.device, &display);
+    if (unlikely (status))
+	return status;
+
+    if (shm->pixmap)
+	XFreePixmap (display->display, shm->pixmap);
+
+    if (active (shm, display->display)) {
+	shm->info->last_request = shm->active;
+	_pqueue_push (&display->shm->info, shm->info);
+	if (seqno_before (display->shm->last_request, shm->active))
+	    display->shm->last_request = shm->active;
+    } else {
+	_cairo_mempool_free (&shm->info->pool->mem, shm->info->mem);
+	free (shm->info);
+
+	_cairo_xlib_shm_pool_cleanup (display);
+    }
+
+    cairo_list_del (&shm->link);
+
+    cairo_device_release (&display->base);
+    return _cairo_image_surface_finish (abstract_surface);
+}
+
+static const cairo_surface_backend_t cairo_xlib_shm_surface_backend = {
+    CAIRO_SURFACE_TYPE_IMAGE,
+    _cairo_xlib_shm_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_image_surface_create_similar,
+    NULL, /* create similar image */
+    _cairo_image_surface_map_to_image,
+    _cairo_image_surface_unmap_image,
+
+    _cairo_image_surface_source,
+    _cairo_image_surface_acquire_source_image,
+    _cairo_image_surface_release_source_image,
+    _cairo_image_surface_snapshot,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_image_surface_get_extents,
+    _cairo_image_surface_get_font_options,
+
+    _cairo_xlib_shm_surface_flush,
+    NULL,
+
+    _cairo_image_surface_paint,
+    _cairo_image_surface_mask,
+    _cairo_image_surface_stroke,
+    _cairo_image_surface_fill,
+    NULL, /* fill-stroke */
+    _cairo_image_surface_glyphs,
+};
+
+static cairo_bool_t
+has_shm (cairo_xlib_surface_t *surface)
+{
+    cairo_xlib_display_t *display = (cairo_xlib_display_t *)surface->base.device;
+    return display->shm != NULL;
+}
+
+static int
+has_shm_pixmaps (cairo_xlib_surface_t *surface)
+{
+    cairo_xlib_display_t *display = (cairo_xlib_display_t *)surface->base.device;
+    if (!display->shm)
+	return 0;
+
+    return display->shm->has_pixmaps;
+}
+
+static cairo_xlib_shm_surface_t *
+_cairo_xlib_shm_surface_create (cairo_xlib_surface_t *other,
+				pixman_format_code_t format,
+				int width, int height,
+				cairo_bool_t will_sync,
+				int create_pixmap)
+{
+    cairo_xlib_shm_surface_t *shm;
+    cairo_xlib_display_t *display;
+    pixman_image_t *image;
+    int stride, size;
+
+    stride = CAIRO_STRIDE_FOR_WIDTH_BPP (width, PIXMAN_FORMAT_BPP(format));
+    size = stride * height;
+    if (size < MIN_SIZE)
+	return NULL;
+
+    shm = _cairo_malloc (sizeof (*shm));
+    if (unlikely (shm == NULL))
+	return (cairo_xlib_shm_surface_t *)_cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_surface_init (&shm->image.base,
+			 &cairo_xlib_shm_surface_backend,
+			 other->base.device,
+			 _cairo_content_from_pixman_format (format),
+			 FALSE); /* is_vector */
+
+    if (_cairo_xlib_display_acquire (other->base.device, &display))
+	goto cleanup_shm;
+
+    shm->info = _cairo_xlib_shm_info_create (display, size, will_sync);
+    if (shm->info == NULL)
+	goto cleanup_display;
+
+    image = pixman_image_create_bits (format, width, height,
+				      (uint32_t *) shm->info->mem, stride);
+    if (image == NULL)
+	goto cleanup_info;
+
+    _cairo_image_surface_init (&shm->image, image, format);
+
+    shm->pixmap = 0;
+    if (create_pixmap && size >= create_pixmap) {
+	shm->pixmap = XShmCreatePixmap (display->display,
+					other->drawable,
+					shm->info->mem,
+					&shm->info->pool->shm,
+					shm->image.width,
+					shm->image.height,
+					shm->image.depth);
+    }
+    shm->active = shm->info->last_request;
+    shm->idle = -5;
+
+    assert (shm->active == 0 || will_sync);
+
+    cairo_list_add (&shm->link, &display->shm->surfaces);
+
+    cairo_device_release (&display->base);
+
+    return shm;
+
+cleanup_info:
+    _cairo_mempool_free (&shm->info->pool->mem, shm->info->mem);
+    free(shm->info);
+cleanup_display:
+    cairo_device_release (&display->base);
+cleanup_shm:
+    free (shm);
+    return NULL;
+}
+
+static void
+_cairo_xlib_surface_update_shm (cairo_xlib_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *)surface->shm;
+    cairo_xlib_display_t *display;
+    cairo_damage_t *damage;
+    GC gc;
+
+    damage = _cairo_damage_reduce (surface->base.damage);
+    surface->base.damage = _cairo_damage_create();
+
+    if (_cairo_xlib_display_acquire (surface->base.device, &display))
+	goto cleanup_damage;
+
+    if (_cairo_xlib_surface_get_gc (display, surface, &gc))
+	goto cleanup_display;
+
+    if (! surface->owns_pixmap) {
+	XGCValues gcv;
+
+	gcv.subwindow_mode = IncludeInferiors;
+	XChangeGC (display->display, gc, GCSubwindowMode, &gcv);
+    }
+
+    if (damage->region) {
+	XRectangle stack_rects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	XRectangle *rects = stack_rects;
+	cairo_rectangle_int_t r;
+	int n_rects, i;
+
+	n_rects = cairo_region_num_rectangles (damage->region);
+	if (n_rects == 0) {
+	} else if (n_rects == 1) {
+	    cairo_region_get_rectangle (damage->region, 0, &r);
+	    XCopyArea (display->display,
+		       surface->drawable, shm->pixmap, gc,
+		       r.x, r.y,
+		       r.width, r.height,
+		       r.x, r.y);
+	} else {
+	    if (n_rects > ARRAY_LENGTH (stack_rects)) {
+		rects = _cairo_malloc_ab (n_rects, sizeof (XRectangle));
+		if (unlikely (rects == NULL)) {
+		    rects = stack_rects;
+		    n_rects = ARRAY_LENGTH (stack_rects);
+		}
+	    }
+	    for (i = 0; i < n_rects; i++) {
+		cairo_region_get_rectangle (damage->region, i, &r);
+
+		rects[i].x = r.x;
+		rects[i].y = r.y;
+		rects[i].width  = r.width;
+		rects[i].height = r.height;
+	    }
+	    XSetClipRectangles (display->display, gc, 0, 0, rects, i, YXBanded);
+
+	    XCopyArea (display->display,
+		       surface->drawable, shm->pixmap, gc,
+		       0, 0,
+		       shm->image.width, shm->image.height,
+		       0, 0);
+
+	    if (damage->status == CAIRO_STATUS_SUCCESS && damage->region)
+		XSetClipMask (display->display, gc, None);
+	}
+    } else {
+	XCopyArea (display->display,
+		   surface->drawable, shm->pixmap, gc,
+		   0, 0,
+		   shm->image.width, shm->image.height,
+		   0, 0);
+    }
+
+    if (! surface->owns_pixmap) {
+	XGCValues gcv;
+
+	gcv.subwindow_mode = ClipByChildren;
+	XChangeGC (display->display, gc, GCSubwindowMode, &gcv);
+    }
+
+    _cairo_xlib_display_sync (display);
+    shm->active = 0;
+    shm->idle--;
+
+    _cairo_xlib_surface_put_gc (display, surface, gc);
+cleanup_display:
+    cairo_device_release (&display->base);
+cleanup_damage:
+    _cairo_damage_destroy (damage);
+}
+
+static void
+_cairo_xlib_surface_clear_shm (cairo_xlib_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *)surface->shm;
+
+    assert (shm->active == 0);
+
+    _cairo_damage_destroy (surface->base.damage);
+    surface->base.damage = _cairo_damage_create();
+
+    memset (shm->image.data, 0, shm->image.stride * shm->image.height);
+    shm->image.base.is_clear = TRUE;
+}
+
+static void inc_idle (cairo_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *)surface;
+    shm->idle++;
+}
+
+static void dec_idle (cairo_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *)surface;
+    shm->idle--;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_get_shm (cairo_xlib_surface_t *surface,
+			     cairo_bool_t overwrite)
+{
+    if (surface->fallback) {
+	assert (surface->base.damage);
+	assert (surface->shm);
+	assert (surface->shm->damage);
+	goto done;
+    }
+
+    if (surface->shm == NULL) {
+	pixman_format_code_t pixman_format;
+	cairo_bool_t will_sync;
+
+	if (! has_shm_pixmaps (surface))
+	    return NULL;
+
+	if ((surface->width | surface->height) < 32)
+	    return NULL;
+
+	pixman_format = _pixman_format_for_xlib_surface (surface);
+	if (pixman_format == 0)
+	    return NULL;
+
+	will_sync = !surface->base.is_clear && !overwrite;
+
+	surface->shm =
+	    &_cairo_xlib_shm_surface_create (surface, pixman_format,
+					     surface->width, surface->height,
+					     will_sync, 1)->image.base;
+	if (surface->shm == NULL)
+	    return NULL;
+
+	assert (surface->base.damage == NULL);
+	if (surface->base.serial || !surface->owns_pixmap) {
+	    cairo_rectangle_int_t rect;
+
+	    rect.x = rect.y = 0;
+	    rect.width = surface->width;
+	    rect.height = surface->height;
+
+	    surface->base.damage =
+		_cairo_damage_add_rectangle (NULL, &rect);
+	} else
+	    surface->base.damage = _cairo_damage_create ();
+
+	surface->shm->damage = _cairo_damage_create ();
+    }
+
+    if (overwrite) {
+	_cairo_damage_destroy (surface->base.damage);
+	surface->base.damage = _cairo_damage_create ();
+    }
+
+    if (!surface->base.is_clear && surface->base.damage->dirty)
+	_cairo_xlib_surface_update_shm (surface);
+
+    _cairo_xlib_shm_surface_flush (surface->shm, 1);
+
+    if (surface->base.is_clear && surface->base.damage->dirty)
+	_cairo_xlib_surface_clear_shm (surface);
+
+done:
+    dec_idle(surface->shm);
+    return surface->shm;
+}
+
+cairo_int_status_t
+_cairo_xlib_surface_put_shm (cairo_xlib_surface_t *surface)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
+
+    if (!surface->fallback) {
+	if (surface->shm)
+	    inc_idle (surface->shm);
+	return CAIRO_INT_STATUS_SUCCESS;
+    }
+
+    if (surface->shm->damage->dirty) {
+	cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *) surface->shm;
+	cairo_xlib_display_t *display;
+	cairo_damage_t *damage;
+	GC gc;
+
+	status = _cairo_xlib_display_acquire (surface->base.device, &display);
+	if (unlikely (status))
+	    return status;
+
+	damage = _cairo_damage_reduce (shm->image.base.damage);
+	shm->image.base.damage = _cairo_damage_create ();
+
+	TRACE ((stderr, "%s: flushing damage x %d\n", __FUNCTION__,
+		damage->region ? cairo_region_num_rectangles (damage->region) : 0));
+	if (damage->status == CAIRO_STATUS_SUCCESS && damage->region) {
+	    XRectangle stack_rects[CAIRO_STACK_ARRAY_LENGTH (XRectangle)];
+	    XRectangle *rects = stack_rects;
+	    cairo_rectangle_int_t r;
+	    int n_rects, i;
+
+	    n_rects = cairo_region_num_rectangles (damage->region);
+	    if (n_rects == 0)
+		goto out;
+
+	    status = _cairo_xlib_surface_get_gc (display, surface, &gc);
+	    if (unlikely (status))
+		goto out;
+
+	    if (n_rects == 1) {
+		cairo_region_get_rectangle (damage->region, 0, &r);
+		_cairo_xlib_shm_surface_mark_active (surface->shm);
+		XCopyArea (display->display,
+			   shm->pixmap, surface->drawable, gc,
+			   r.x, r.y,
+			   r.width, r.height,
+			   r.x, r.y);
+	    } else {
+		if (n_rects > ARRAY_LENGTH (stack_rects)) {
+		    rects = _cairo_malloc_ab (n_rects, sizeof (XRectangle));
+		    if (unlikely (rects == NULL)) {
+			status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+			_cairo_xlib_surface_put_gc (display, surface, gc);
+			goto out;
+		    }
+		}
+		for (i = 0; i < n_rects; i++) {
+		    cairo_region_get_rectangle (damage->region, i, &r);
+
+		    rects[i].x = r.x;
+		    rects[i].y = r.y;
+		    rects[i].width  = r.width;
+		    rects[i].height = r.height;
+		}
+		XSetClipRectangles (display->display, gc, 0, 0, rects, i, YXBanded);
+
+		_cairo_xlib_shm_surface_mark_active (surface->shm);
+		XCopyArea (display->display,
+			   shm->pixmap, surface->drawable, gc,
+			   0, 0,
+			   shm->image.width, shm->image.height,
+			   0, 0);
+
+		if (damage->status == CAIRO_STATUS_SUCCESS && damage->region)
+		    XSetClipMask (display->display, gc, None);
+	    }
+
+	    _cairo_xlib_surface_put_gc (display, surface, gc);
+	}
+
+out:
+	_cairo_damage_destroy (damage);
+	cairo_device_release (&display->base);
+    }
+
+    return status;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_create_shm (cairo_xlib_surface_t *other,
+				pixman_format_code_t format,
+				int width, int height)
+{
+    cairo_surface_t *surface;
+
+    surface = NULL;
+    if (has_shm (other))
+	surface = &_cairo_xlib_shm_surface_create (other, format, width, height,
+						   FALSE, has_shm_pixmaps (other))->image.base;
+
+    return surface;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_create_shm__image (cairo_xlib_surface_t *surface,
+				       pixman_format_code_t format,
+				       int width, int height)
+{
+    if (! has_shm(surface))
+	return NULL;
+
+    return &_cairo_xlib_shm_surface_create (surface, format, width, height,
+					    FALSE, 0)->image.base;
+}
+
+cairo_surface_t *
+_cairo_xlib_surface_create_similar_shm (void *other,
+					cairo_format_t format,
+					int width, int height)
+{
+    cairo_surface_t *surface;
+
+    surface = _cairo_xlib_surface_create_shm (other,
+					      _cairo_format_to_pixman_format_code (format),
+					      width, height);
+    if (surface) {
+	if (! surface->is_clear) {
+	    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *) surface;
+	    assert (shm->active == 0);
+	    memset (shm->image.data, 0, shm->image.stride * shm->image.height);
+	    shm->image.base.is_clear = TRUE;
+	}
+    } else
+	surface = cairo_image_surface_create (format, width, height);
+
+    return surface;
+}
+
+void
+_cairo_xlib_shm_surface_mark_active (cairo_surface_t *_shm)
+{
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *) _shm;
+    cairo_xlib_display_t *display = (cairo_xlib_display_t *) _shm->device;
+
+    shm->active = XNextRequest (display->display);
+}
+
+void
+_cairo_xlib_shm_surface_get_ximage (cairo_surface_t *surface,
+				    XImage *ximage)
+{
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *) surface;
+    int native_byte_order = _cairo_is_little_endian () ? LSBFirst : MSBFirst;
+    cairo_format_masks_t image_masks;
+    int ret;
+
+    ret = _pixman_format_to_masks (shm->image.pixman_format, &image_masks);
+    assert (ret);
+
+    ximage->width = shm->image.width;
+    ximage->height = shm->image.height;
+    ximage->format = ZPixmap;
+    ximage->data = (char *) shm->image.data;
+    ximage->obdata = (char *)&shm->info->pool->shm;
+    ximage->byte_order = native_byte_order;
+    ximage->bitmap_unit = 32;	/* always for libpixman */
+    ximage->bitmap_bit_order = native_byte_order;
+    ximage->bitmap_pad = 32;	/* always for libpixman */
+    ximage->depth = shm->image.depth;
+    ximage->bytes_per_line = shm->image.stride;
+    ximage->bits_per_pixel = image_masks.bpp;
+    ximage->red_mask = image_masks.red_mask;
+    ximage->green_mask = image_masks.green_mask;
+    ximage->blue_mask = image_masks.blue_mask;
+    ximage->xoffset = 0;
+
+    ret = XInitImage (ximage);
+    assert (ret != 0);
+}
+
+void *
+_cairo_xlib_shm_surface_get_obdata (cairo_surface_t *surface)
+{
+    cairo_xlib_display_t *display = (cairo_xlib_display_t *) surface->device;
+    cairo_xlib_shm_surface_t *shm = (cairo_xlib_shm_surface_t *) surface;
+
+    display->shm->last_event = shm->active = XNextRequest (display->display);
+    return &shm->info->pool->shm;
+}
+
+Pixmap
+_cairo_xlib_shm_surface_get_pixmap (cairo_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm;
+
+    shm = (cairo_xlib_shm_surface_t *) surface;
+    return shm->pixmap;
+}
+
+XRenderPictFormat *
+_cairo_xlib_shm_surface_get_xrender_format (cairo_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm;
+
+    shm = (cairo_xlib_shm_surface_t *) surface;
+    if (shm->image.format != CAIRO_FORMAT_INVALID)
+	return _cairo_xlib_display_get_xrender_format ((cairo_xlib_display_t *)surface->device,
+						       shm->image.format);
+
+    return _cairo_xlib_display_get_xrender_format_for_pixman((cairo_xlib_display_t *)surface->device,
+							     shm->image.pixman_format);
+}
+
+cairo_bool_t
+_cairo_xlib_shm_surface_is_active (cairo_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm;
+
+    shm = (cairo_xlib_shm_surface_t *) surface;
+    if (shm->active == 0)
+	return FALSE;
+
+    if (seqno_passed (shm->active, peek_processed (shm->image.base.device))) {
+	shm->active = 0;
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+cairo_bool_t
+_cairo_xlib_shm_surface_is_idle (cairo_surface_t *surface)
+{
+    cairo_xlib_shm_surface_t *shm;
+
+    shm = (cairo_xlib_shm_surface_t *) surface;
+    return shm->idle > 0;
+}
+
+#define XORG_VERSION_ENCODE(major,minor,patch,snap) \
+    (((major) * 10000000) + ((minor) * 100000) + ((patch) * 1000) + snap)
+
+static cairo_bool_t
+has_broken_send_shm_event (cairo_xlib_display_t *display,
+			   cairo_xlib_shm_display_t *shm)
+{
+    Display *dpy = display->display;
+    int (*old_handler) (Display *display, XErrorEvent *event);
+    XShmCompletionEvent ev;
+    XShmSegmentInfo info;
+
+    info.shmid = shmget (IPC_PRIVATE, 0x1000, IPC_CREAT | 0600);
+    if (info.shmid == -1)
+	return TRUE;
+
+    info.readOnly = FALSE;
+    info.shmaddr = shmat (info.shmid, NULL, 0);
+    if (info.shmaddr == (char *) -1) {
+	shmctl (info.shmid, IPC_RMID, NULL);
+	return TRUE;
+    }
+
+    ev.type = shm->event;
+    ev.send_event = 1;
+    ev.serial = 1;
+    ev.drawable = shm->window;
+    ev.major_code = shm->opcode;
+    ev.minor_code = X_ShmPutImage;
+
+    ev.shmseg = info.shmid;
+    ev.offset = 0;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (_cairo_xlib_display_mutex));
+    _x_error_occurred = FALSE;
+
+    XLockDisplay (dpy);
+    XSync (dpy, False);
+    old_handler = XSetErrorHandler (_check_error_handler);
+
+    XShmAttach (dpy, &info);
+    XSendEvent (dpy, ev.drawable, False, 0, (XEvent *)&ev);
+    XShmDetach (dpy, &info);
+
+    XSync (dpy, False);
+    XSetErrorHandler (old_handler);
+    XUnlockDisplay (dpy);
+
+    shmctl (info.shmid, IPC_RMID, NULL);
+    shmdt (info.shmaddr);
+
+    return _x_error_occurred;
+}
+
+static cairo_bool_t
+xorg_has_buggy_send_shm_completion_event(cairo_xlib_display_t *display,
+					 cairo_xlib_shm_display_t *shm)
+{
+    Display *dpy = display->display;
+
+    /* As libXext sets the SEND_EVENT bit in the ShmCompletionEvent,
+     * the Xserver may crash if it does not take care when processing
+     * the event type. For instance versions of Xorg prior to 1.11.1
+     * exhibited this bug, and was fixed by:
+     *
+     * commit 2d2dce558d24eeea0eb011ec9ebaa6c5c2273c39
+     * Author: Sam Spilsbury <sam.spilsbury@canonical.com>
+     * Date:   Wed Sep 14 09:58:34 2011 +0800
+     *
+     * Remove the SendEvent bit (0x80) before doing range checks on event type.
+     */
+    if (_cairo_xlib_vendor_is_xorg (dpy) &&
+	VendorRelease (dpy) < XORG_VERSION_ENCODE(1,11,0,1))
+	return TRUE;
+
+    /* For everyone else check that no error is generated */
+    return has_broken_send_shm_event (display, shm);
+}
+
+void
+_cairo_xlib_display_init_shm (cairo_xlib_display_t *display)
+{
+    cairo_xlib_shm_display_t *shm;
+    XSetWindowAttributes attr;
+    XExtCodes *codes;
+    int has_pixmap, scr;
+
+    display->shm = NULL;
+
+    if (!can_use_shm (display->display, &has_pixmap))
+	return;
+
+    shm = _cairo_malloc (sizeof (*shm));
+    if (unlikely (shm == NULL))
+	return;
+
+    codes = XInitExtension (display->display, SHMNAME);
+    if (codes == NULL) {
+	free (shm);
+	return;
+    }
+
+    shm->opcode = codes ->major_opcode;
+    shm->event = codes->first_event;
+
+    if (unlikely (_pqueue_init (&shm->info))) {
+	free (shm);
+	return;
+    }
+
+    scr = DefaultScreen (display->display);
+    attr.override_redirect = 1;
+    shm->window = XCreateWindow (display->display,
+				 DefaultRootWindow (display->display), -1, -1,
+				 1, 1, 0,
+				 DefaultDepth (display->display, scr),
+				 InputOutput,
+				 DefaultVisual (display->display, scr),
+				 CWOverrideRedirect, &attr);
+    shm->last_event = 0;
+    shm->last_request = 0;
+
+    if (xorg_has_buggy_send_shm_completion_event(display, shm))
+	has_pixmap = 0;
+
+    shm->has_pixmaps = has_pixmap ? MIN_PIXMAP_SIZE : 0;
+    cairo_list_init (&shm->pool);
+
+    cairo_list_init (&shm->surfaces);
+
+    display->shm = shm;
+}
+
+void
+_cairo_xlib_display_fini_shm (cairo_xlib_display_t *display)
+{
+    cairo_xlib_shm_display_t *shm = display->shm;
+
+    if (shm == NULL)
+	return;
+
+    while (!cairo_list_is_empty (&shm->surfaces))
+	cairo_surface_finish (&cairo_list_first_entry (&shm->surfaces,
+						       cairo_xlib_shm_surface_t,
+						       link)->image.base);
+
+    _pqueue_fini (&shm->info);
+
+    while (!cairo_list_is_empty (&shm->pool)) {
+	cairo_xlib_shm_t *pool;
+
+	pool = cairo_list_first_entry (&shm->pool, cairo_xlib_shm_t, link);
+	_cairo_xlib_display_shm_pool_destroy (display, pool);
+    }
+
+    if (display->display)
+	XDestroyWindow (display->display, shm->window);
+
+    free (shm);
+    display->shm = NULL;
+}
+#endif
+#endif
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-surface.c b/libs/cairo-1.16.0/src/cairo-xlib-surface.c
new file mode 100644
index 0000000..2a6d896
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-surface.c
@@ -0,0 +1,2382 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+/* Heed well the words of Owen Taylor:
+ * "Any patch that works around a render bug, or claims to, without a
+ * specific reference to the bug filed in bugzilla.freedesktop.org will
+ * never pass approval."
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-surface-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-damage-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-pattern-private.h"
+#include "cairo-pixman-private.h"
+#include "cairo-region-private.h"
+#include "cairo-scaled-font-private.h"
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-surface-subsurface-private.h"
+
+#include <X11/Xutil.h> /* for XDestroyImage */
+
+#include <X11/extensions/XShm.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#define XLIB_COORD_MAX 32767
+
+#define DEBUG 0
+
+#if DEBUG
+#define UNSUPPORTED(reason) \
+    fprintf (stderr, \
+	     "cairo-xlib: hit unsupported operation %s(), line %d: %s\n", \
+	     __FUNCTION__, __LINE__, reason), \
+    CAIRO_INT_STATUS_UNSUPPORTED
+#else
+#define UNSUPPORTED(reason) CAIRO_INT_STATUS_UNSUPPORTED
+#endif
+
+#if DEBUG
+#include <X11/Xlibint.h>
+static void CAIRO_PRINTF_FORMAT (2, 3)
+_x_bread_crumb (Display *dpy,
+		const char *fmt,
+		...)
+{
+    xReq *req;
+    char buf[2048];
+    unsigned int len, len_dwords;
+    va_list ap;
+
+    va_start (ap, fmt);
+    len = vsnprintf (buf, sizeof (buf), fmt, ap);
+    va_end (ap);
+
+    buf[len++] = '\0';
+    while (len & 3)
+	buf[len++] = '\0';
+
+    LockDisplay (dpy);
+    GetEmptyReq (NoOperation, req);
+
+    len_dwords = len >> 2;
+    SetReqLen (req, len_dwords, len_dwords);
+    Data (dpy, buf, len);
+
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}
+#define X_DEBUG(x) _x_bread_crumb x
+#else
+#define X_DEBUG(x)
+#endif
+
+/**
+ * SECTION:cairo-xlib
+ * @Title: XLib Surfaces
+ * @Short_Description: X Window System rendering using XLib
+ * @See_Also: #cairo_surface_t
+ *
+ * The XLib surface is used to render cairo graphics to X Window System
+ * windows and pixmaps using the XLib library.
+ *
+ * Note that the XLib surface automatically takes advantage of X render extension
+ * if it is available.
+ **/
+
+/**
+ * CAIRO_HAS_XLIB_SURFACE:
+ *
+ * Defined if the Xlib surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * SECTION:cairo-xlib-xrender
+ * @Title: XLib-XRender Backend
+ * @Short_Description: X Window System rendering using XLib and the X Render extension
+ * @See_Also: #cairo_surface_t
+ *
+ * The XLib surface is used to render cairo graphics to X Window System
+ * windows and pixmaps using the XLib and Xrender libraries.
+ *
+ * Note that the XLib surface automatically takes advantage of X Render extension
+ * if it is available.
+ **/
+
+/**
+ * CAIRO_HAS_XLIB_XRENDER_SURFACE:
+ *
+ * Defined if the XLib/XRender surface functions are available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.6
+ **/
+
+/* Xlib doesn't define a typedef, so define one ourselves */
+typedef int (*cairo_xlib_error_func_t) (Display     *display,
+					XErrorEvent *event);
+
+static cairo_surface_t *
+_cairo_xlib_surface_create_internal (cairo_xlib_screen_t	*screen,
+				     Drawable		        drawable,
+				     Visual		       *visual,
+				     XRenderPictFormat	       *xrender_format,
+				     int			width,
+				     int			height,
+				     int			depth);
+
+static cairo_bool_t
+_cairo_surface_is_xlib (cairo_surface_t *surface);
+
+/*
+ * Instead of taking two round trips for each blending request,
+ * assume that if a particular drawable fails GetImage that it will
+ * fail for a "while"; use temporary pixmaps to avoid the errors
+ */
+
+#define CAIRO_ASSUME_PIXMAP	20
+
+static Visual *
+_visual_for_xrender_format(Screen *screen,
+			   XRenderPictFormat *xrender_format)
+{
+    int d, v;
+
+    /* XXX Consider searching through the list of known cairo_visual_t for
+     * the reverse mapping.
+     */
+
+    for (d = 0; d < screen->ndepths; d++) {
+	Depth *d_info = &screen->depths[d];
+
+	if (d_info->depth != xrender_format->depth)
+	    continue;
+
+	for (v = 0; v < d_info->nvisuals; v++) {
+	    Visual *visual = &d_info->visuals[v];
+
+	    switch (visual->class) {
+	    case TrueColor:
+		if (xrender_format->type != PictTypeDirect)
+		    continue;
+		break;
+
+	    case DirectColor:
+		/* Prefer TrueColor to DirectColor.
+		 * (XRenderFindVisualFormat considers both TrueColor and DirectColor
+		 * Visuals to match the same PictFormat.)
+		 */
+		continue;
+
+	    case StaticGray:
+	    case GrayScale:
+	    case StaticColor:
+	    case PseudoColor:
+		if (xrender_format->type != PictTypeIndexed)
+		    continue;
+		break;
+	    }
+
+	    if (xrender_format ==
+		XRenderFindVisualFormat (DisplayOfScreen(screen), visual))
+		return visual;
+	}
+    }
+
+    return NULL;
+}
+
+static cairo_content_t
+_xrender_format_to_content (XRenderPictFormat *xrender_format)
+{
+    cairo_content_t content;
+
+    /* This only happens when using a non-Render server. Let's punt
+     * and say there's no alpha here. */
+    if (xrender_format == NULL)
+	return CAIRO_CONTENT_COLOR;
+
+    content = 0;
+    if (xrender_format->direct.alphaMask)
+	    content |= CAIRO_CONTENT_ALPHA;
+    if (xrender_format->direct.redMask |
+	xrender_format->direct.greenMask |
+	xrender_format->direct.blueMask)
+	    content |= CAIRO_CONTENT_COLOR;
+
+    return content;
+}
+
+static cairo_surface_t *
+_cairo_xlib_surface_create_similar (void	       *abstract_src,
+				    cairo_content_t	content,
+				    int			width,
+				    int			height)
+{
+    cairo_xlib_surface_t *src = abstract_src;
+    XRenderPictFormat *xrender_format;
+    cairo_xlib_surface_t *surface;
+    cairo_xlib_display_t *display;
+    Pixmap pix;
+
+    if (width > XLIB_COORD_MAX || height > XLIB_COORD_MAX)
+	return NULL;
+
+    if (width == 0 || height == 0)
+	return NULL;
+
+    if (_cairo_xlib_display_acquire (src->base.device, &display))
+        return NULL;
+
+    /* If we never found an XRenderFormat or if it isn't compatible
+     * with the content being requested, then we fallback to just
+     * constructing a cairo_format_t instead, (which will fairly
+     * arbitrarily pick a visual/depth for the similar surface.
+     */
+    xrender_format = NULL;
+    if (src->xrender_format &&
+	_xrender_format_to_content (src->xrender_format) == content)
+    {
+	xrender_format = src->xrender_format;
+    }
+    if (xrender_format == NULL) {
+	xrender_format =
+	    _cairo_xlib_display_get_xrender_format (display,
+						    _cairo_format_from_content (content));
+    }
+    if (xrender_format) {
+	Visual *visual;
+
+	/* We've got a compatible XRenderFormat now, which means the
+	 * similar surface will match the existing surface as closely in
+	 * visual/depth etc. as possible. */
+	pix = XCreatePixmap (display->display, src->drawable,
+			     width, height, xrender_format->depth);
+
+	if (xrender_format == src->xrender_format)
+	    visual = src->visual;
+	else
+	    visual = _visual_for_xrender_format(src->screen->screen,
+					        xrender_format);
+
+	surface = (cairo_xlib_surface_t *)
+		  _cairo_xlib_surface_create_internal (src->screen, pix, visual,
+						       xrender_format,
+						       width, height,
+						       xrender_format->depth);
+    }
+    else
+    {
+	Screen *screen = src->screen->screen;
+	int depth;
+
+	/* No compatible XRenderFormat, see if we can make an ordinary pixmap,
+	 * so that we can still accelerate blits with XCopyArea(). */
+	if (content != CAIRO_CONTENT_COLOR) {
+            cairo_device_release (&display->base);
+	    return NULL;
+        }
+
+	depth = DefaultDepthOfScreen (screen);
+
+	pix = XCreatePixmap (display->display, RootWindowOfScreen (screen),
+			     width <= 0 ? 1 : width, height <= 0 ? 1 : height,
+			     depth);
+
+	surface = (cairo_xlib_surface_t *)
+		  _cairo_xlib_surface_create_internal (src->screen, pix,
+						       DefaultVisualOfScreen (screen),
+						       NULL,
+						       width, height, depth);
+    }
+
+    if (likely (surface->base.status == CAIRO_STATUS_SUCCESS))
+	surface->owns_pixmap = TRUE;
+    else
+	XFreePixmap (display->display, pix);
+
+    cairo_device_release (&display->base);
+
+    return &surface->base;
+}
+
+static void
+_cairo_xlib_surface_discard_shm (cairo_xlib_surface_t *surface)
+{
+    if (surface->shm == NULL)
+	return;
+
+    /* Force the flush for an external surface */
+    if (!surface->owns_pixmap)
+	cairo_surface_flush (surface->shm);
+
+    cairo_surface_finish (surface->shm);
+    cairo_surface_destroy (surface->shm);
+    surface->shm = NULL;
+
+    _cairo_damage_destroy (surface->base.damage);
+    surface->base.damage = NULL;
+
+    surface->fallback = 0;
+}
+
+static cairo_status_t
+_cairo_xlib_surface_finish (void *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+    cairo_status_t        status;
+    cairo_xlib_display_t *display;
+
+    cairo_list_del (&surface->link);
+
+    status = _cairo_xlib_display_acquire (surface->base.device, &display);
+    if (unlikely (status))
+        return status;
+
+    X_DEBUG ((display->display, "finish (drawable=%x)", (unsigned int) surface->drawable));
+
+    if (surface->embedded_source.picture)
+	XRenderFreePicture (display->display, surface->embedded_source.picture);
+    if (surface->picture)
+	XRenderFreePicture (display->display, surface->picture);
+
+    _cairo_xlib_surface_discard_shm (surface);
+
+    if (surface->owns_pixmap)
+	XFreePixmap (display->display, surface->drawable);
+
+    cairo_device_release (&display->base);
+
+    return status;
+}
+
+cairo_status_t
+_cairo_xlib_surface_get_gc (cairo_xlib_display_t *display,
+                            cairo_xlib_surface_t *surface,
+                            GC                   *gc)
+{
+    *gc = _cairo_xlib_screen_get_gc (display,
+                                     surface->screen,
+				     surface->depth,
+				     surface->drawable);
+    if (unlikely (*gc == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static int
+_noop_error_handler (Display     *display,
+		     XErrorEvent *event)
+{
+    return False;		/* return value is ignored */
+}
+
+static void
+_swap_ximage_2bytes (XImage *ximage)
+{
+    int i, j;
+    char *line = ximage->data;
+
+    for (j = ximage->height; j; j--) {
+	uint16_t *p = (uint16_t *) line;
+	for (i = ximage->width; i; i--) {
+	    *p = bswap_16 (*p);
+	    p++;
+	}
+
+	line += ximage->bytes_per_line;
+    }
+}
+
+static void
+_swap_ximage_3bytes (XImage *ximage)
+{
+    int i, j;
+    char *line = ximage->data;
+
+    for (j = ximage->height; j; j--) {
+	uint8_t *p = (uint8_t *) line;
+	for (i = ximage->width; i; i--) {
+	    uint8_t tmp;
+	    tmp = p[2];
+	    p[2] = p[0];
+	    p[0] = tmp;
+	    p += 3;
+	}
+
+	line += ximage->bytes_per_line;
+    }
+}
+
+static void
+_swap_ximage_4bytes (XImage *ximage)
+{
+    int i, j;
+    char *line = ximage->data;
+
+    for (j = ximage->height; j; j--) {
+	uint32_t *p = (uint32_t *) line;
+	for (i = ximage->width; i; i--) {
+	    *p = bswap_32 (*p);
+	    p++;
+	}
+
+	line += ximage->bytes_per_line;
+    }
+}
+
+static void
+_swap_ximage_nibbles (XImage *ximage)
+{
+    int i, j;
+    char *line = ximage->data;
+
+    for (j = ximage->height; j; j--) {
+	uint8_t *p = (uint8_t *) line;
+	for (i = (ximage->width + 1) / 2; i; i--) {
+	    *p = ((*p >> 4) & 0xf) | ((*p << 4) & ~0xf);
+	    p++;
+	}
+
+	line += ximage->bytes_per_line;
+    }
+}
+
+static void
+_swap_ximage_bits (XImage *ximage)
+{
+    int i, j;
+    char *line = ximage->data;
+    int unit = ximage->bitmap_unit;
+    int line_bytes = ((ximage->width + unit - 1) & ~(unit - 1)) / 8;
+
+    for (j = ximage->height; j; j--) {
+	char *p = line;
+
+	for (i = line_bytes; i; i--) {
+	    char b = *p;
+	    b = ((b << 1) & 0xaa) | ((b >> 1) & 0x55);
+	    b = ((b << 2) & 0xcc) | ((b >> 2) & 0x33);
+	    b = ((b << 4) & 0xf0) | ((b >> 4) & 0x0f);
+	    *p = b;
+
+	    p++;
+	}
+
+	line += ximage->bytes_per_line;
+    }
+}
+
+static void
+_swap_ximage_to_native (XImage *ximage)
+{
+    int unit_bytes = 0;
+    int native_byte_order = _cairo_is_little_endian () ? LSBFirst : MSBFirst;
+
+    if (ximage->bits_per_pixel == 1 &&
+	ximage->bitmap_bit_order != native_byte_order)
+    {
+	_swap_ximage_bits (ximage);
+	if (ximage->bitmap_bit_order == ximage->byte_order)
+	    return;
+    }
+
+    if (ximage->byte_order == native_byte_order)
+	return;
+
+    switch (ximage->bits_per_pixel) {
+    case 1:
+	unit_bytes = ximage->bitmap_unit / 8;
+	break;
+    case 4:
+	_swap_ximage_nibbles (ximage);
+	/* fall-through */
+    case 8:
+    case 16:
+    case 20:
+    case 24:
+    case 28:
+    case 30:
+    case 32:
+	unit_bytes = (ximage->bits_per_pixel + 7) / 8;
+	break;
+    default:
+        /* This could be hit on some rare but possible cases. */
+	ASSERT_NOT_REACHED;
+    }
+
+    switch (unit_bytes) {
+    case 1:
+	break;
+    case 2:
+	_swap_ximage_2bytes (ximage);
+	break;
+    case 3:
+	_swap_ximage_3bytes (ximage);
+	break;
+    case 4:
+	_swap_ximage_4bytes (ximage);
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+    }
+}
+
+
+/* Given a mask, (with a single sequence of contiguous 1 bits), return
+ * the number of 1 bits in 'width' and the number of 0 bits to its
+ * right in 'shift'. */
+static void
+_characterize_field (uint32_t mask, int *width, int *shift)
+{
+    *width = _cairo_popcount (mask);
+    /* The final '& 31' is to force a 0 mask to result in 0 shift. */
+    *shift = _cairo_popcount ((mask - 1) & ~mask) & 31;
+}
+
+/* Convert a field of 'width' bits to 'new_width' bits with correct
+ * rounding. */
+static inline uint32_t
+_resize_field (uint32_t field, int width, int new_width)
+{
+    if (width == 0)
+	return 0;
+
+    if (width >= new_width) {
+	return field >> (width - new_width);
+    } else {
+	uint32_t result = field << (new_width - width);
+
+	while (width < new_width) {
+	    result |= result >> width;
+	    width <<= 1;
+	}
+	return result;
+    }
+}
+
+static inline uint32_t
+_adjust_field (uint32_t field, int adjustment)
+{
+    return MIN (255, MAX(0, (int)field + adjustment));
+}
+
+/* Given a shifted field value, (described by 'width' and 'shift),
+ * resize it 8-bits and return that value.
+ *
+ * Note that the original field value must not have any non-field bits
+ * set.
+ */
+static inline uint32_t
+_field_to_8 (uint32_t field, int width, int shift)
+{
+    return _resize_field (field >> shift, width, 8);
+}
+
+static inline uint32_t
+_field_to_8_undither (uint32_t field, int width, int shift,
+		      int dither_adjustment)
+{
+    return _adjust_field (_field_to_8 (field, width, shift), - dither_adjustment>>width);
+}
+
+/* Given an 8-bit value, convert it to a field of 'width', shift it up
+ *  to 'shift, and return it. */
+static inline uint32_t
+_field_from_8 (uint32_t field, int width, int shift)
+{
+    return _resize_field (field, 8, width) << shift;
+}
+
+static inline uint32_t
+_field_from_8_dither (uint32_t field, int width, int shift,
+		      int8_t dither_adjustment)
+{
+    return _field_from_8 (_adjust_field (field, dither_adjustment>>width), width, shift);
+}
+
+static inline uint32_t
+_pseudocolor_from_rgb888_dither (cairo_xlib_visual_info_t *visual_info,
+				 uint32_t r, uint32_t g, uint32_t b,
+				 int8_t dither_adjustment)
+{
+    if (r == g && g == b) {
+	dither_adjustment /= RAMP_SIZE;
+	return visual_info->gray8_to_pseudocolor[_adjust_field (r, dither_adjustment)];
+    } else {
+	dither_adjustment = visual_info->dither8_to_cube[dither_adjustment+128];
+	return visual_info->cube_to_pseudocolor[visual_info->field8_to_cube[_adjust_field (r, dither_adjustment)]]
+					       [visual_info->field8_to_cube[_adjust_field (g, dither_adjustment)]]
+					       [visual_info->field8_to_cube[_adjust_field (b, dither_adjustment)]];
+    }
+}
+
+static inline uint32_t
+_pseudocolor_to_rgb888 (cairo_xlib_visual_info_t *visual_info,
+			uint32_t pixel)
+{
+    uint32_t r, g, b;
+    pixel &= 0xff;
+    r = visual_info->colors[pixel].r;
+    g = visual_info->colors[pixel].g;
+    b = visual_info->colors[pixel].b;
+    return (r << 16) |
+	   (g <<  8) |
+	   (b      );
+}
+
+/* should range from -128 to 127 */
+#define X 16
+static const int8_t dither_pattern[4][4] = {
+    {-8*X, +0*X, -6*X, +2*X},
+    {+4*X, -4*X, +6*X, -2*X},
+    {-5*X, +4*X, -7*X, +1*X},
+    {+7*X, -1*X, +5*X, -3*X}
+};
+#undef X
+
+static int bits_per_pixel(cairo_xlib_surface_t *surface)
+{
+    if (surface->depth > 16)
+	return 32;
+    else if (surface->depth > 8)
+	return 16;
+    else if (surface->depth > 1)
+	return 8;
+    else
+	return 1;
+}
+
+pixman_format_code_t
+_pixman_format_for_xlib_surface (cairo_xlib_surface_t *surface)
+{
+    cairo_format_masks_t masks;
+    pixman_format_code_t format;
+
+    masks.bpp = bits_per_pixel (surface);
+    masks.alpha_mask = surface->a_mask;
+    masks.red_mask = surface->r_mask;
+    masks.green_mask = surface->g_mask;
+    masks.blue_mask = surface->b_mask;
+    if (! _pixman_format_from_masks (&masks, &format))
+	return 0;
+
+    return format;
+}
+
+static cairo_surface_t *
+_get_image_surface (cairo_xlib_surface_t    *surface,
+		    const cairo_rectangle_int_t *extents,
+		    int try_shm)
+{
+    cairo_int_status_t status;
+    cairo_image_surface_t *image = NULL;
+    XImage *ximage;
+    pixman_format_code_t pixman_format;
+    cairo_xlib_display_t *display;
+
+    assert (extents->x >= 0);
+    assert (extents->y >= 0);
+    assert (extents->x + extents->width <= surface->width);
+    assert (extents->y + extents->height <= surface->height);
+
+    if (surface->base.is_clear ||
+	(surface->base.serial == 0 && surface->owns_pixmap))
+    {
+	pixman_format = _pixman_format_for_xlib_surface (surface);
+	if (pixman_format)
+	{
+	    return _cairo_image_surface_create_with_pixman_format (NULL,
+								   pixman_format,
+								   extents->width,
+								   extents->height,
+								   0);
+	}
+    }
+
+    if (surface->shm) {
+	cairo_image_surface_t *src = (cairo_image_surface_t *) surface->shm;
+	cairo_surface_t *dst;
+	cairo_surface_pattern_t pattern;
+
+	dst = cairo_image_surface_create (src->format,
+					  extents->width, extents->height);
+	if (unlikely (dst->status))
+	    return dst;
+
+	_cairo_pattern_init_for_surface (&pattern, &src->base);
+	cairo_matrix_init_translate (&pattern.base.matrix,
+				     extents->x, extents->y);
+	status = _cairo_surface_paint (dst, CAIRO_OPERATOR_SOURCE, &pattern.base, NULL);
+	_cairo_pattern_fini (&pattern.base);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (dst);
+	    dst = _cairo_surface_create_in_error (status);
+	}
+
+	return dst;
+    }
+
+    status = _cairo_xlib_display_acquire (surface->base.device, &display);
+    if (status)
+        return _cairo_surface_create_in_error (status);
+
+    pixman_format = _pixman_format_for_xlib_surface (surface);
+    if (try_shm && pixman_format) {
+	image = (cairo_image_surface_t *)
+	    _cairo_xlib_surface_create_shm__image (surface, pixman_format,
+						   extents->width, extents->height);
+	if (image && image->base.status == CAIRO_STATUS_SUCCESS) {
+	    cairo_xlib_error_func_t old_handler;
+	    XImage shm_image;
+	    Bool success;
+
+	    _cairo_xlib_shm_surface_get_ximage (&image->base, &shm_image);
+
+	    XSync (display->display, False);
+	    old_handler = XSetErrorHandler (_noop_error_handler);
+	    success = XShmGetImage (display->display,
+				    surface->drawable,
+				    &shm_image,
+				    extents->x, extents->y,
+				    AllPlanes);
+	    XSetErrorHandler (old_handler);
+
+	    if (success) {
+		cairo_device_release (&display->base);
+		return &image->base;
+	    }
+
+	    cairo_surface_destroy (&image->base);
+	    image = NULL;
+	}
+    }
+
+    if (surface->use_pixmap == 0) {
+	cairo_xlib_error_func_t old_handler;
+
+	XSync (display->display, False);
+	old_handler = XSetErrorHandler (_noop_error_handler);
+
+	ximage = XGetImage (display->display,
+			    surface->drawable,
+			    extents->x, extents->y,
+			    extents->width, extents->height,
+			    AllPlanes, ZPixmap);
+
+	XSetErrorHandler (old_handler);
+
+	/* If we get an error, the surface must have been a window,
+	 * so retry with the safe code path.
+	 */
+	if (!ximage)
+	    surface->use_pixmap = CAIRO_ASSUME_PIXMAP;
+    } else {
+	surface->use_pixmap--;
+	ximage = NULL;
+    }
+
+    if (ximage == NULL) {
+	/* XGetImage from a window is dangerous because it can
+	 * produce errors if the window is unmapped or partially
+	 * outside the screen. We could check for errors and
+	 * retry, but to keep things simple, we just create a
+	 * temporary pixmap
+	 */
+	Pixmap pixmap;
+	GC gc;
+
+	status = _cairo_xlib_surface_get_gc (display, surface, &gc);
+	if (unlikely (status))
+            goto BAIL;
+
+	pixmap = XCreatePixmap (display->display,
+				surface->drawable,
+				extents->width, extents->height,
+				surface->depth);
+	if (pixmap) {
+	    XGCValues gcv;
+
+	    gcv.subwindow_mode = IncludeInferiors;
+	    XChangeGC (display->display, gc, GCSubwindowMode, &gcv);
+
+	    XCopyArea (display->display, surface->drawable, pixmap, gc,
+		       extents->x, extents->y,
+		       extents->width, extents->height,
+		       0, 0);
+
+	    gcv.subwindow_mode = ClipByChildren;
+	    XChangeGC (display->display, gc, GCSubwindowMode, &gcv);
+
+	    ximage = XGetImage (display->display,
+				pixmap,
+				0, 0,
+				extents->width, extents->height,
+				AllPlanes, ZPixmap);
+
+	    XFreePixmap (display->display, pixmap);
+	}
+
+	_cairo_xlib_surface_put_gc (display, surface, gc);
+
+	if (ximage == NULL) {
+	    status =  _cairo_error (CAIRO_STATUS_NO_MEMORY);
+            goto BAIL;
+        }
+    }
+
+    _swap_ximage_to_native (ximage);
+
+    /* We can't use pixman to simply write to image if:
+     *   (a) the pixels are not appropriately aligned,
+     *   (b) pixman does not the pixel format, or
+     *   (c) if the image is palettized and we need to convert.
+     */
+    if (pixman_format &&
+	ximage->bitmap_unit == 32 && ximage->bitmap_pad == 32 &&
+	(surface->visual == NULL || surface->visual->class == TrueColor))
+    {
+	image = (cairo_image_surface_t*)
+	    _cairo_image_surface_create_with_pixman_format ((unsigned char *) ximage->data,
+							    pixman_format,
+							    ximage->width,
+							    ximage->height,
+							    ximage->bytes_per_line);
+	status = image->base.status;
+	if (unlikely (status))
+	    goto BAIL;
+
+	/* Let the surface take ownership of the data */
+	_cairo_image_surface_assume_ownership_of_data (image);
+	ximage->data = NULL;
+    } else {
+	/* The visual we are dealing with is not supported by the
+	 * standard pixman formats. So we must first convert the data
+	 * to a supported format. */
+
+	cairo_format_t format;
+	unsigned char *data;
+	uint32_t *row;
+	uint32_t in_pixel, out_pixel;
+	unsigned int rowstride;
+	uint32_t a_mask=0, r_mask=0, g_mask=0, b_mask=0;
+	int a_width=0, r_width=0, g_width=0, b_width=0;
+	int a_shift=0, r_shift=0, g_shift=0, b_shift=0;
+	int x, y, x0, y0, x_off, y_off;
+	cairo_xlib_visual_info_t *visual_info = NULL;
+
+	if (surface->visual == NULL || surface->visual->class == TrueColor) {
+	    cairo_bool_t has_alpha;
+	    cairo_bool_t has_color;
+
+	    has_alpha =  surface->a_mask;
+	    has_color = (surface->r_mask ||
+			 surface->g_mask ||
+			 surface->b_mask);
+
+	    if (has_color) {
+		if (has_alpha) {
+		    format = CAIRO_FORMAT_ARGB32;
+		} else {
+		    format = CAIRO_FORMAT_RGB24;
+		}
+	    } else {
+		/* XXX: Using CAIRO_FORMAT_A8 here would be more
+		 * efficient, but would require slightly different code in
+		 * the image conversion to put the alpha channel values
+		 * into the right place. */
+		format = CAIRO_FORMAT_ARGB32;
+	    }
+
+	    a_mask = surface->a_mask;
+	    r_mask = surface->r_mask;
+	    g_mask = surface->g_mask;
+	    b_mask = surface->b_mask;
+
+	    _characterize_field (a_mask, &a_width, &a_shift);
+	    _characterize_field (r_mask, &r_width, &r_shift);
+	    _characterize_field (g_mask, &g_width, &g_shift);
+	    _characterize_field (b_mask, &b_width, &b_shift);
+
+	} else {
+	    format = CAIRO_FORMAT_RGB24;
+
+	    status = _cairo_xlib_screen_get_visual_info (display,
+                                                         surface->screen,
+							 surface->visual,
+							 &visual_info);
+	    if (unlikely (status))
+		goto BAIL;
+	}
+
+	image = (cairo_image_surface_t *) cairo_image_surface_create
+	    (format, ximage->width, ximage->height);
+	status = image->base.status;
+	if (unlikely (status))
+	    goto BAIL;
+
+	data = cairo_image_surface_get_data (&image->base);
+	rowstride = cairo_image_surface_get_stride (&image->base) >> 2;
+	row = (uint32_t *) data;
+	x0 = extents->x + surface->base.device_transform.x0;
+	y0 = extents->y + surface->base.device_transform.y0;
+	for (y = 0, y_off = y0 % ARRAY_LENGTH (dither_pattern);
+	     y < ximage->height;
+	     y++, y_off = (y_off+1) % ARRAY_LENGTH (dither_pattern)) {
+	    const int8_t *dither_row = dither_pattern[y_off];
+	    for (x = 0, x_off = x0 % ARRAY_LENGTH (dither_pattern[0]);
+		 x < ximage->width;
+		 x++, x_off = (x_off+1) % ARRAY_LENGTH (dither_pattern[0])) {
+		int dither_adjustment = dither_row[x_off];
+
+		in_pixel = XGetPixel (ximage, x, y);
+		if (visual_info == NULL) {
+		    out_pixel = (
+			_field_to_8 (in_pixel & a_mask, a_width, a_shift) << 24 |
+			_field_to_8_undither (in_pixel & r_mask, r_width, r_shift, dither_adjustment) << 16 |
+			_field_to_8_undither (in_pixel & g_mask, g_width, g_shift, dither_adjustment) << 8 |
+			_field_to_8_undither (in_pixel & b_mask, b_width, b_shift, dither_adjustment));
+		} else {
+		    /* Undithering pseudocolor does not look better */
+		    out_pixel = _pseudocolor_to_rgb888 (visual_info, in_pixel);
+		}
+		row[x] = out_pixel;
+	    }
+	    row += rowstride;
+	}
+	cairo_surface_mark_dirty (&image->base);
+    }
+
+ BAIL:
+    if (ximage)
+        XDestroyImage (ximage);
+
+    cairo_device_release (&display->base);
+
+    if (unlikely (status)) {
+	if (image)
+	    cairo_surface_destroy (&image->base);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    return &image->base;
+}
+
+void
+_cairo_xlib_surface_set_precision (cairo_xlib_surface_t	*surface,
+				   cairo_antialias_t	 antialias)
+{
+    cairo_xlib_display_t	*display = surface->display;
+    int precision;
+
+    if (display->force_precision != -1)
+	    precision = display->force_precision;
+    else switch (antialias) {
+    default:
+    case CAIRO_ANTIALIAS_DEFAULT:
+    case CAIRO_ANTIALIAS_GRAY:
+    case CAIRO_ANTIALIAS_NONE:
+    case CAIRO_ANTIALIAS_FAST:
+    case CAIRO_ANTIALIAS_GOOD:
+	precision = PolyModeImprecise;
+	break;
+    case CAIRO_ANTIALIAS_BEST:
+    case CAIRO_ANTIALIAS_SUBPIXEL:
+	precision = PolyModePrecise;
+	break;
+    }
+
+    if (surface->precision != precision) {
+	XRenderPictureAttributes pa;
+
+	pa.poly_mode = precision;
+	XRenderChangePicture (display->display, surface->picture,
+			      CPPolyMode, &pa);
+
+	surface->precision = precision;
+    }
+}
+
+void
+_cairo_xlib_surface_ensure_picture (cairo_xlib_surface_t    *surface)
+{
+    cairo_xlib_display_t *display = surface->display;
+    XRenderPictureAttributes pa;
+    int mask = 0;
+
+    if (surface->picture)
+	return;
+
+    if (display->force_precision != -1)
+	pa.poly_mode = display->force_precision;
+    else
+	pa.poly_mode = PolyModeImprecise;
+    if (pa.poly_mode)
+	    mask |= CPPolyMode;
+
+    surface->precision = pa.poly_mode;
+    surface->picture = XRenderCreatePicture (display->display,
+					     surface->drawable,
+					     surface->xrender_format,
+					     mask, &pa);
+}
+
+cairo_status_t
+_cairo_xlib_surface_draw_image (cairo_xlib_surface_t   *surface,
+				cairo_image_surface_t  *image,
+				int                    src_x,
+				int                    src_y,
+				int                    width,
+				int                    height,
+				int                    dst_x,
+				int                    dst_y)
+{
+    cairo_xlib_display_t *display;
+    XImage ximage;
+    cairo_format_masks_t image_masks;
+    int native_byte_order = _cairo_is_little_endian () ? LSBFirst : MSBFirst;
+    cairo_surface_t *shm_image = NULL;
+    pixman_image_t *pixman_image = NULL;
+    cairo_status_t status;
+    cairo_bool_t own_data = FALSE;
+    cairo_bool_t is_rgb_image;
+    GC gc;
+
+    ximage.width = image->width;
+    ximage.height = image->height;
+    ximage.format = ZPixmap;
+    ximage.byte_order = native_byte_order;
+    ximage.bitmap_unit = 32;	/* always for libpixman */
+    ximage.bitmap_bit_order = native_byte_order;
+    ximage.bitmap_pad = 32;	/* always for libpixman */
+    ximage.depth = surface->depth;
+    ximage.red_mask = surface->r_mask;
+    ximage.green_mask = surface->g_mask;
+    ximage.blue_mask = surface->b_mask;
+    ximage.xoffset = 0;
+    ximage.obdata = NULL;
+
+    status = _cairo_xlib_display_acquire (surface->base.device, &display);
+    if (unlikely (status))
+        return status;
+
+    is_rgb_image = _pixman_format_to_masks (image->pixman_format, &image_masks);
+
+    if (is_rgb_image &&
+	(image_masks.alpha_mask == surface->a_mask || surface->a_mask == 0) &&
+	(image_masks.red_mask   == surface->r_mask || surface->r_mask == 0) &&
+	(image_masks.green_mask == surface->g_mask || surface->g_mask == 0) &&
+	(image_masks.blue_mask  == surface->b_mask || surface->b_mask == 0))
+    {
+	int ret;
+
+	ximage.bits_per_pixel = image_masks.bpp;
+	ximage.bytes_per_line = image->stride;
+	ximage.data = (char *)image->data;
+	if (image->base.device != surface->base.device) {
+	    /* If PutImage will break the image up into chunks, prefer to
+	     * send it all in one pass with ShmPutImage.  For larger images,
+	     * it is further advantageous to reduce the number of copies,
+	     * albeit at the expense of more SHM bookkeeping.
+	     */
+	    int max_request_size = XExtendedMaxRequestSize (display->display);
+	    if (max_request_size == 0)
+		max_request_size = XMaxRequestSize (display->display);
+	    if (max_request_size > 8192)
+		max_request_size = 8192;
+	    if (width * height * 4 > max_request_size) {
+		shm_image = _cairo_xlib_surface_create_shm__image (surface,
+								   image->pixman_format,
+								   width, height);
+		if (shm_image && shm_image->status == CAIRO_STATUS_SUCCESS) {
+		    cairo_image_surface_t *clone = (cairo_image_surface_t *) shm_image;
+		    pixman_image_composite32 (PIXMAN_OP_SRC,
+					      image->pixman_image, NULL, clone->pixman_image,
+					      src_x, src_y,
+					      0, 0,
+					      0, 0,
+					      width, height);
+		    ximage.obdata = _cairo_xlib_shm_surface_get_obdata (shm_image);
+		    ximage.data = (char *)clone->data;
+		    ximage.bytes_per_line = clone->stride;
+		    ximage.width = width;
+		    ximage.height = height;
+		    src_x = src_y = 0;
+		}
+	    }
+	} else
+	    ximage.obdata = _cairo_xlib_shm_surface_get_obdata (&image->base);
+
+	ret = XInitImage (&ximage);
+	assert (ret != 0);
+    }
+    else if (surface->visual == NULL || surface->visual->class == TrueColor)
+    {
+        pixman_format_code_t intermediate_format;
+        int ret;
+
+        image_masks.alpha_mask = surface->a_mask;
+        image_masks.red_mask   = surface->r_mask;
+        image_masks.green_mask = surface->g_mask;
+        image_masks.blue_mask  = surface->b_mask;
+        image_masks.bpp        = bits_per_pixel (surface);
+        ret = _pixman_format_from_masks (&image_masks, &intermediate_format);
+        assert (ret);
+
+	shm_image = _cairo_xlib_surface_create_shm__image (surface,
+							   intermediate_format,
+							   width, height);
+	if (shm_image && shm_image->status == CAIRO_STATUS_SUCCESS) {
+	    cairo_image_surface_t *clone = (cairo_image_surface_t *) shm_image;
+
+	    pixman_image_composite32 (PIXMAN_OP_SRC,
+				      image->pixman_image,
+				      NULL,
+				      clone->pixman_image,
+				      src_x, src_y,
+				      0, 0,
+				      0, 0,
+				      width, height);
+
+	    ximage.data = (char *) clone->data;
+	    ximage.obdata = _cairo_xlib_shm_surface_get_obdata (&clone->base);
+	    ximage.bytes_per_line = clone->stride;
+	} else {
+	    pixman_image = pixman_image_create_bits (intermediate_format,
+						     width, height, NULL, 0);
+	    if (pixman_image == NULL) {
+		status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+		goto BAIL;
+	    }
+
+	    pixman_image_composite32 (PIXMAN_OP_SRC,
+				      image->pixman_image,
+				      NULL,
+				      pixman_image,
+				      src_x, src_y,
+				      0, 0,
+				      0, 0,
+				      width, height);
+
+	    ximage.data = (char *) pixman_image_get_data (pixman_image);
+	    ximage.bytes_per_line = pixman_image_get_stride (pixman_image);
+	}
+
+	ximage.width = width;
+	ximage.height = height;
+	ximage.bits_per_pixel = image_masks.bpp;
+
+	ret = XInitImage (&ximage);
+	assert (ret != 0);
+
+	src_x = src_y = 0;
+    }
+    else
+    {
+	unsigned int stride, rowstride;
+	int x, y, x0, y0, x_off, y_off;
+	uint32_t in_pixel, out_pixel, *row;
+	int i_a_width=0, i_r_width=0, i_g_width=0, i_b_width=0;
+	int i_a_shift=0, i_r_shift=0, i_g_shift=0, i_b_shift=0;
+	int o_a_width=0, o_r_width=0, o_g_width=0, o_b_width=0;
+	int o_a_shift=0, o_r_shift=0, o_g_shift=0, o_b_shift=0;
+	cairo_xlib_visual_info_t *visual_info = NULL;
+	cairo_bool_t true_color;
+	int ret;
+
+	ximage.bits_per_pixel = bits_per_pixel(surface);
+	stride = CAIRO_STRIDE_FOR_WIDTH_BPP (ximage.width,
+					     ximage.bits_per_pixel);
+	ximage.bytes_per_line = stride;
+	ximage.data = _cairo_malloc_ab (stride, ximage.height);
+	if (unlikely (ximage.data == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+            goto BAIL;
+        }
+
+	own_data = TRUE;
+
+	ret = XInitImage (&ximage);
+	assert (ret != 0);
+
+	_characterize_field (image_masks.alpha_mask, &i_a_width, &i_a_shift);
+	_characterize_field (image_masks.red_mask  , &i_r_width, &i_r_shift);
+	_characterize_field (image_masks.green_mask, &i_g_width, &i_g_shift);
+	_characterize_field (image_masks.blue_mask , &i_b_width, &i_b_shift);
+
+	true_color = surface->visual == NULL ||
+	             surface->visual->class == TrueColor;
+	if (true_color) {
+	    _characterize_field (surface->a_mask, &o_a_width, &o_a_shift);
+	    _characterize_field (surface->r_mask, &o_r_width, &o_r_shift);
+	    _characterize_field (surface->g_mask, &o_g_width, &o_g_shift);
+	    _characterize_field (surface->b_mask, &o_b_width, &o_b_shift);
+	} else {
+	    status = _cairo_xlib_screen_get_visual_info (display,
+                                                         surface->screen,
+							 surface->visual,
+							 &visual_info);
+	    if (unlikely (status))
+		goto BAIL;
+	}
+
+	rowstride = image->stride >> 2;
+	row = (uint32_t *) image->data;
+	x0 = dst_x + surface->base.device_transform.x0;
+	y0 = dst_y + surface->base.device_transform.y0;
+	for (y = 0, y_off = y0 % ARRAY_LENGTH (dither_pattern);
+	     y < ximage.height;
+	     y++, y_off = (y_off+1) % ARRAY_LENGTH (dither_pattern))
+	{
+	    const int8_t *dither_row = dither_pattern[y_off];
+
+	    for (x = 0, x_off = x0 % ARRAY_LENGTH (dither_pattern[0]);
+		 x < ximage.width;
+		 x++, x_off = (x_off+1) % ARRAY_LENGTH (dither_pattern[0]))
+	    {
+		int dither_adjustment = dither_row[x_off];
+		int a, r, g, b;
+
+		if (image_masks.bpp == 1)
+		    in_pixel = !! (((uint8_t*)row)[x/8] & (1 << (x & 7)));
+		else if (image_masks.bpp <= 8)
+		    in_pixel = ((uint8_t*)row)[x];
+		else if (image_masks.bpp <= 16)
+		    in_pixel = ((uint16_t*)row)[x];
+		else if (image_masks.bpp <= 24)
+#ifdef WORDS_BIGENDIAN
+		    in_pixel = ((uint8_t*)row)[3 * x]     << 16 |
+			       ((uint8_t*)row)[3 * x + 1] << 8  |
+			       ((uint8_t*)row)[3 * x + 2];
+#else
+		    in_pixel = ((uint8_t*)row)[3 * x]           |
+			       ((uint8_t*)row)[3 * x + 1] << 8  |
+			       ((uint8_t*)row)[3 * x + 2] << 16;
+#endif
+		else
+		    in_pixel = row[x];
+
+		/* If the incoming image has no alpha channel, then the input
+		 * is opaque and the output should have the maximum alpha value.
+		 * For all other channels, their absence implies 0.
+		 */
+		if (image_masks.alpha_mask == 0x0)
+		    a = 0xff;
+		else
+		    a = _field_to_8 (in_pixel & image_masks.alpha_mask, i_a_width, i_a_shift);
+		r = _field_to_8 (in_pixel & image_masks.red_mask  , i_r_width, i_r_shift);
+		g = _field_to_8 (in_pixel & image_masks.green_mask, i_g_width, i_g_shift);
+		b = _field_to_8 (in_pixel & image_masks.blue_mask , i_b_width, i_b_shift);
+
+		if (true_color) {
+		    out_pixel = _field_from_8        (a, o_a_width, o_a_shift) |
+				_field_from_8_dither (r, o_r_width, o_r_shift, dither_adjustment) |
+				_field_from_8_dither (g, o_g_width, o_g_shift, dither_adjustment) |
+				_field_from_8_dither (b, o_b_width, o_b_shift, dither_adjustment);
+		} else {
+		    out_pixel = _pseudocolor_from_rgb888_dither (visual_info, r, g, b, dither_adjustment);
+		}
+
+		XPutPixel (&ximage, x, y, out_pixel);
+	    }
+
+	    row += rowstride;
+	}
+    }
+
+    status = _cairo_xlib_surface_get_gc (display, surface, &gc);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (ximage.obdata)
+	XShmPutImage (display->display, surface->drawable, gc, &ximage,
+		      src_x, src_y, dst_x, dst_y, width, height, True);
+    else
+	XPutImage (display->display, surface->drawable, gc, &ximage,
+		   src_x, src_y, dst_x, dst_y, width, height);
+
+    _cairo_xlib_surface_put_gc (display, surface, gc);
+
+  BAIL:
+    cairo_device_release (&display->base);
+
+    if (own_data)
+	free (ximage.data);
+    if (shm_image)
+	cairo_surface_destroy (shm_image);
+    if (pixman_image)
+        pixman_image_unref (pixman_image);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_xlib_surface_source(void                    *abstract_surface,
+			   cairo_rectangle_int_t *extents)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+
+    if (extents) {
+	extents->x = extents->y = 0;
+	extents->width  = surface->width;
+	extents->height = surface->height;
+    }
+
+    return &surface->base;
+}
+
+static cairo_status_t
+_cairo_xlib_surface_acquire_source_image (void                    *abstract_surface,
+					  cairo_image_surface_t  **image_out,
+					  void                   **image_extra)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+    cairo_rectangle_int_t extents;
+
+    *image_extra = NULL;
+    *image_out = (cairo_image_surface_t *)
+	_cairo_xlib_surface_get_shm (abstract_surface, FALSE);
+    if (*image_out) 
+	    return (*image_out)->base.status;
+
+    extents.x = extents.y = 0;
+    extents.width = surface->width;
+    extents.height = surface->height;
+
+    *image_out = (cairo_image_surface_t*)
+	_get_image_surface (surface, &extents, TRUE);
+    return (*image_out)->base.status;
+}
+
+static cairo_surface_t *
+_cairo_xlib_surface_snapshot (void *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+    cairo_rectangle_int_t extents;
+
+    extents.x = extents.y = 0;
+    extents.width = surface->width;
+    extents.height = surface->height;
+
+    return _get_image_surface (surface, &extents, FALSE);
+}
+
+static void
+_cairo_xlib_surface_release_source_image (void                   *abstract_surface,
+					  cairo_image_surface_t  *image,
+					  void                   *image_extra)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+
+    if (&image->base == surface->shm)
+	return;
+
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_image_surface_t *
+_cairo_xlib_surface_map_to_image (void                    *abstract_surface,
+				  const cairo_rectangle_int_t   *extents)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+    cairo_surface_t *image;
+
+    image = _cairo_xlib_surface_get_shm (abstract_surface, FALSE);
+    if (image) {
+	assert (surface->base.damage);
+	surface->fallback++;
+	return _cairo_image_surface_map_to_image (image, extents);
+    }
+
+    image = _get_image_surface (abstract_surface, extents, TRUE);
+    cairo_surface_set_device_offset (image, -extents->x, -extents->y);
+
+    return (cairo_image_surface_t *) image;
+}
+
+static cairo_int_status_t
+_cairo_xlib_surface_unmap_image (void *abstract_surface,
+				 cairo_image_surface_t *image)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    if (surface->shm) {
+	cairo_rectangle_int_t r;
+
+	assert (surface->fallback);
+	assert (surface->base.damage);
+
+	r.x = image->base.device_transform_inverse.x0;
+	r.y = image->base.device_transform_inverse.y0;
+	r.width  = image->width;
+	r.height = image->height;
+
+	TRACE ((stderr, "%s: adding damage (%d,%d)x(%d,%d)\n",
+		__FUNCTION__, r.x, r.y, r.width, r.height));
+	surface->shm->damage =
+	    _cairo_damage_add_rectangle (surface->shm->damage, &r);
+
+	return _cairo_image_surface_unmap_image (surface->shm, image);
+    }
+
+    status = _cairo_xlib_surface_draw_image (abstract_surface, image,
+					     0, 0,
+					     image->width, image->height,
+					     image->base.device_transform_inverse.x0,
+					     image->base.device_transform_inverse.y0);
+
+    cairo_surface_finish (&image->base);
+    cairo_surface_destroy (&image->base);
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_xlib_surface_flush (void *abstract_surface,
+			   unsigned flags)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_xlib_surface_put_shm (surface);
+    if (unlikely (status))
+	return status;
+
+    surface->fallback >>= 1;
+    if (surface->shm && _cairo_xlib_shm_surface_is_idle (surface->shm))
+	_cairo_xlib_surface_discard_shm (surface);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_xlib_surface_get_extents (void		         *abstract_surface,
+				 cairo_rectangle_int_t   *rectangle)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+
+    rectangle->width  = surface->width;
+    rectangle->height = surface->height;
+
+    return TRUE;
+}
+
+static void
+_cairo_xlib_surface_get_font_options (void                  *abstract_surface,
+				      cairo_font_options_t  *options)
+{
+    cairo_xlib_surface_t *surface = abstract_surface;
+
+    *options = *_cairo_xlib_screen_get_font_options (surface->screen);
+}
+
+static inline cairo_int_status_t
+get_compositor (cairo_xlib_surface_t **surface,
+		const cairo_compositor_t **compositor)
+{
+    cairo_xlib_surface_t *s = *surface;
+    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;;
+
+    if (s->fallback) {
+	assert (s->base.damage != NULL);
+	assert (s->shm != NULL);
+	assert (s->shm->damage != NULL);
+	if (! _cairo_xlib_shm_surface_is_active (s->shm)) {
+	    *surface = (cairo_xlib_surface_t *) s->shm;
+	    *compositor = ((cairo_image_surface_t *) s->shm)->compositor;
+	    s->fallback++;
+	} else {
+	    status = _cairo_xlib_surface_put_shm (s);
+	    s->fallback = 0;
+	    *compositor = s->compositor;
+	}
+    } else
+	*compositor = s->compositor;
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_xlib_surface_paint (void				*_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_clip_t		*clip)
+{
+    cairo_xlib_surface_t *surface = _surface;
+    const cairo_compositor_t *compositor;
+    cairo_int_status_t status;
+
+    status = get_compositor (&surface, &compositor);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_compositor_paint (compositor, &surface->base,
+				    op, source,
+				    clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_surface_mask (void			*_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  const cairo_pattern_t	*mask,
+			  const cairo_clip_t	*clip)
+{
+    cairo_xlib_surface_t *surface = _surface;
+    const cairo_compositor_t *compositor;
+    cairo_int_status_t status;
+
+    status = get_compositor (&surface, &compositor);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_compositor_mask (compositor, &surface->base,
+				   op, source, mask,
+				   clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_surface_stroke (void			*_surface,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    const cairo_path_fixed_t	*path,
+			    const cairo_stroke_style_t	*style,
+			    const cairo_matrix_t	*ctm,
+			    const cairo_matrix_t	*ctm_inverse,
+			    double			 tolerance,
+			    cairo_antialias_t		 antialias,
+			    const cairo_clip_t		*clip)
+{
+    cairo_xlib_surface_t *surface = _surface;
+    const cairo_compositor_t *compositor;
+    cairo_int_status_t status;
+
+    status = get_compositor (&surface, &compositor);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_compositor_stroke (compositor, &surface->base,
+				     op, source,
+				     path, style, ctm, ctm_inverse,
+				     tolerance, antialias,
+				     clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_surface_fill (void				*_surface,
+			  cairo_operator_t		 op,
+			  const cairo_pattern_t		*source,
+			  const cairo_path_fixed_t	*path,
+			  cairo_fill_rule_t		 fill_rule,
+			  double			 tolerance,
+			  cairo_antialias_t		 antialias,
+			  const cairo_clip_t		*clip)
+{
+    cairo_xlib_surface_t *surface = _surface;
+    const cairo_compositor_t *compositor;
+    cairo_int_status_t status;
+
+    status = get_compositor (&surface, &compositor);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_compositor_fill (compositor, &surface->base,
+				   op, source,
+				   path, fill_rule, tolerance, antialias,
+				   clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_surface_glyphs (void			*_surface,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    cairo_glyph_t		*glyphs,
+			    int				 num_glyphs,
+			    cairo_scaled_font_t		*scaled_font,
+			    const cairo_clip_t		*clip)
+{
+    cairo_xlib_surface_t *surface = _surface;
+    const cairo_compositor_t *compositor;
+    cairo_int_status_t status;
+
+    status = get_compositor (&surface, &compositor);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_compositor_glyphs (compositor, &surface->base,
+				     op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
+
+static const cairo_surface_backend_t cairo_xlib_surface_backend = {
+    CAIRO_SURFACE_TYPE_XLIB,
+    _cairo_xlib_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_xlib_surface_create_similar,
+    _cairo_xlib_surface_create_similar_shm,
+    _cairo_xlib_surface_map_to_image,
+    _cairo_xlib_surface_unmap_image,
+
+    _cairo_xlib_surface_source,
+    _cairo_xlib_surface_acquire_source_image,
+    _cairo_xlib_surface_release_source_image,
+    _cairo_xlib_surface_snapshot,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_xlib_surface_get_extents,
+    _cairo_xlib_surface_get_font_options,
+
+    _cairo_xlib_surface_flush,
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_xlib_surface_paint,
+    _cairo_xlib_surface_mask,
+    _cairo_xlib_surface_stroke,
+    _cairo_xlib_surface_fill,
+    NULL, /* fill-stroke */
+    _cairo_xlib_surface_glyphs,
+};
+
+/**
+ * _cairo_surface_is_xlib:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is a #cairo_xlib_surface_t
+ *
+ * Return value: True if the surface is an xlib surface
+ **/
+static cairo_bool_t
+_cairo_surface_is_xlib (cairo_surface_t *surface)
+{
+    return surface->backend == &cairo_xlib_surface_backend;
+}
+
+static cairo_surface_t *
+_cairo_xlib_surface_create_internal (cairo_xlib_screen_t	*screen,
+				     Drawable			 drawable,
+				     Visual			*visual,
+				     XRenderPictFormat		*xrender_format,
+				     int			 width,
+				     int			 height,
+				     int			 depth)
+{
+    cairo_xlib_surface_t *surface;
+    cairo_xlib_display_t *display;
+    cairo_status_t status;
+
+    if (depth == 0) {
+	if (xrender_format) {
+	    depth = xrender_format->depth;
+
+	    /* XXX find matching visual for core/dithering fallbacks? */
+	} else if (visual) {
+	    Screen *scr = screen->screen;
+
+	    if (visual == DefaultVisualOfScreen (scr)) {
+		depth = DefaultDepthOfScreen (scr);
+	    } else  {
+		int j, k;
+
+		/* This is ugly, but we have to walk over all visuals
+		 * for the display to find the correct depth.
+		 */
+		depth = 0;
+		for (j = 0; j < scr->ndepths; j++) {
+		    Depth *d = &scr->depths[j];
+		    for (k = 0; k < d->nvisuals; k++) {
+			if (&d->visuals[k] == visual) {
+			    depth = d->depth;
+			    goto found;
+			}
+		    }
+		}
+	    }
+	}
+
+	if (depth == 0)
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_VISUAL));
+
+found:
+	;
+    }
+
+    surface = _cairo_malloc (sizeof (cairo_xlib_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    status = _cairo_xlib_display_acquire (screen->device, &display);
+    if (unlikely (status)) {
+        free (surface);
+        return _cairo_surface_create_in_error (_cairo_error (status));
+    }
+
+    surface->display = display;
+    if (CAIRO_RENDER_HAS_CREATE_PICTURE (display)) {
+	if (!xrender_format) {
+	    if (visual) {
+		xrender_format = XRenderFindVisualFormat (display->display, visual);
+	    } else if (depth == 1) {
+		xrender_format =
+		    _cairo_xlib_display_get_xrender_format (display,
+							    CAIRO_FORMAT_A1);
+	    }
+	}
+    }
+
+    cairo_device_release (&display->base);
+
+    _cairo_surface_init (&surface->base,
+			 &cairo_xlib_surface_backend,
+			 screen->device,
+			 _xrender_format_to_content (xrender_format),
+			 FALSE); /* is_vector */
+
+    surface->screen = screen;
+    surface->compositor = display->compositor;
+    surface->shm = NULL;
+    surface->fallback = 0;
+
+    surface->drawable = drawable;
+    surface->owns_pixmap = FALSE;
+    surface->use_pixmap = 0;
+    surface->width = width;
+    surface->height = height;
+
+    surface->picture = None;
+    surface->precision = PolyModePrecise;
+
+    surface->embedded_source.picture = None;
+
+    surface->visual = visual;
+    surface->xrender_format = xrender_format;
+    surface->depth = depth;
+
+    /*
+     * Compute the pixel format masks from either a XrenderFormat or
+     * else from a visual; failing that we assume the drawable is an
+     * alpha-only pixmap as it could only have been created that way
+     * through the cairo_xlib_surface_create_for_bitmap function.
+     */
+    if (xrender_format) {
+	surface->a_mask = (unsigned long)
+	    surface->xrender_format->direct.alphaMask
+	    << surface->xrender_format->direct.alpha;
+	surface->r_mask = (unsigned long)
+	    surface->xrender_format->direct.redMask
+	    << surface->xrender_format->direct.red;
+	surface->g_mask = (unsigned long)
+	    surface->xrender_format->direct.greenMask
+	    << surface->xrender_format->direct.green;
+	surface->b_mask = (unsigned long)
+	    surface->xrender_format->direct.blueMask
+	    << surface->xrender_format->direct.blue;
+    } else if (visual) {
+	surface->a_mask = 0;
+	surface->r_mask = visual->red_mask;
+	surface->g_mask = visual->green_mask;
+	surface->b_mask = visual->blue_mask;
+    } else {
+	if (depth < 32)
+	    surface->a_mask = (1 << depth) - 1;
+	else
+	    surface->a_mask = 0xffffffff;
+	surface->r_mask = 0;
+	surface->g_mask = 0;
+	surface->b_mask = 0;
+    }
+
+    cairo_list_add (&surface->link, &screen->surfaces);
+
+    return &surface->base;
+}
+
+static Screen *
+_cairo_xlib_screen_from_visual (Display *dpy, Visual *visual)
+{
+    int s, d, v;
+
+    for (s = 0; s < ScreenCount (dpy); s++) {
+	Screen *screen;
+
+	screen = ScreenOfDisplay (dpy, s);
+	if (visual == DefaultVisualOfScreen (screen))
+	    return screen;
+
+	for (d = 0; d < screen->ndepths; d++) {
+	    Depth  *depth;
+
+	    depth = &screen->depths[d];
+	    for (v = 0; v < depth->nvisuals; v++)
+		if (visual == &depth->visuals[v])
+		    return screen;
+	}
+    }
+
+    return NULL;
+}
+
+static cairo_bool_t valid_size (int width, int height)
+{
+    /* Note: the minimum surface size allowed in the X protocol is 1x1.
+     * However, as we historically did not check the minimum size we
+     * allowed applications to lie and set the correct size later (one hopes).
+     * To preserve compatibility we must allow applications to use
+     * 0x0 surfaces.
+     */
+    return (width  >= 0 && width  <= XLIB_COORD_MAX &&
+	    height >= 0 && height <= XLIB_COORD_MAX);
+}
+
+/**
+ * cairo_xlib_surface_create:
+ * @dpy: an X Display
+ * @drawable: an X Drawable, (a Pixmap or a Window)
+ * @visual: the visual to use for drawing to @drawable. The depth
+ *          of the visual must match the depth of the drawable.
+ *          Currently, only TrueColor visuals are fully supported.
+ * @width: the current width of @drawable.
+ * @height: the current height of @drawable.
+ *
+ * Creates an Xlib surface that draws to the given drawable.
+ * The way that colors are represented in the drawable is specified
+ * by the provided visual.
+ *
+ * Note: If @drawable is a Window, then the function
+ * cairo_xlib_surface_set_size() must be called whenever the size of the
+ * window changes.
+ *
+ * When @drawable is a Window containing child windows then drawing to
+ * the created surface will be clipped by those child windows.  When
+ * the created surface is used as a source, the contents of the
+ * children will be included.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_xlib_surface_create (Display     *dpy,
+			   Drawable	drawable,
+			   Visual      *visual,
+			   int		width,
+			   int		height)
+{
+    Screen *scr;
+    cairo_xlib_screen_t *screen;
+    cairo_status_t status;
+
+    if (! valid_size (width, height)) {
+	/* you're lying, and you know it! */
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+    scr = _cairo_xlib_screen_from_visual (dpy, visual);
+    if (scr == NULL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_VISUAL));
+
+    status = _cairo_xlib_screen_get (dpy, scr, &screen);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    X_DEBUG ((dpy, "create (drawable=%x)", (unsigned int) drawable));
+
+    return _cairo_xlib_surface_create_internal (screen, drawable,
+                                                visual, NULL,
+                                                width, height, 0);
+}
+
+/**
+ * cairo_xlib_surface_create_for_bitmap:
+ * @dpy: an X Display
+ * @bitmap: an X Drawable, (a depth-1 Pixmap)
+ * @screen: the X Screen associated with @bitmap
+ * @width: the current width of @bitmap.
+ * @height: the current height of @bitmap.
+ *
+ * Creates an Xlib surface that draws to the given bitmap.
+ * This will be drawn to as a %CAIRO_FORMAT_A1 object.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_xlib_surface_create_for_bitmap (Display  *dpy,
+				      Pixmap	bitmap,
+				      Screen   *scr,
+				      int	width,
+				      int	height)
+{
+    cairo_xlib_screen_t *screen;
+    cairo_status_t status;
+
+    if (! valid_size (width, height))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    status = _cairo_xlib_screen_get (dpy, scr, &screen);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    X_DEBUG ((dpy, "create_for_bitmap (drawable=%x)", (unsigned int) bitmap));
+
+    return _cairo_xlib_surface_create_internal (screen, bitmap,
+                                                NULL, NULL,
+                                                width, height, 1);
+}
+
+#if CAIRO_HAS_XLIB_XRENDER_SURFACE
+/**
+ * cairo_xlib_surface_create_with_xrender_format:
+ * @dpy: an X Display
+ * @drawable: an X Drawable, (a Pixmap or a Window)
+ * @screen: the X Screen associated with @drawable
+ * @format: the picture format to use for drawing to @drawable. The depth
+ *          of @format must match the depth of the drawable.
+ * @width: the current width of @drawable.
+ * @height: the current height of @drawable.
+ *
+ * Creates an Xlib surface that draws to the given drawable.
+ * The way that colors are represented in the drawable is specified
+ * by the provided picture format.
+ *
+ * Note: If @drawable is a Window, then the function
+ * cairo_xlib_surface_set_size() must be called whenever the size of the
+ * window changes.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_xlib_surface_create_with_xrender_format (Display		    *dpy,
+					       Drawable		    drawable,
+					       Screen		    *scr,
+					       XRenderPictFormat    *format,
+					       int		    width,
+					       int		    height)
+{
+    cairo_xlib_screen_t *screen;
+    cairo_status_t status;
+
+    if (! valid_size (width, height))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    status = _cairo_xlib_screen_get (dpy, scr, &screen);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    X_DEBUG ((dpy, "create_with_xrender_format (drawable=%x)", (unsigned int) drawable));
+
+    return _cairo_xlib_surface_create_internal (screen, drawable,
+						_visual_for_xrender_format (scr, format),
+                                                format, width, height, 0);
+}
+
+/**
+ * cairo_xlib_surface_get_xrender_format:
+ * @surface: an xlib surface
+ *
+ * Gets the X Render picture format that @surface uses for rendering with the
+ * X Render extension. If the surface was created by
+ * cairo_xlib_surface_create_with_xrender_format() originally, the return
+ * value is the format passed to that constructor.
+ *
+ * Return value: the XRenderPictFormat* associated with @surface,
+ * or %NULL if the surface is not an xlib surface
+ * or if the X Render extension is not available.
+ *
+ * Since: 1.6
+ **/
+XRenderPictFormat *
+cairo_xlib_surface_get_xrender_format (cairo_surface_t *surface)
+{
+    cairo_xlib_surface_t *xlib_surface = (cairo_xlib_surface_t *) surface;
+
+    /* Throw an error for a non-xlib surface */
+    if (! _cairo_surface_is_xlib (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return xlib_surface->xrender_format;
+}
+#endif
+
+/**
+ * cairo_xlib_surface_set_size:
+ * @surface: a #cairo_surface_t for the XLib backend
+ * @width: the new width of the surface
+ * @height: the new height of the surface
+ *
+ * Informs cairo of the new size of the X Drawable underlying the
+ * surface. For a surface created for a Window (rather than a Pixmap),
+ * this function must be called each time the size of the window
+ * changes. (For a subwindow, you are normally resizing the window
+ * yourself, but for a toplevel window, it is necessary to listen for
+ * ConfigureNotify events.)
+ *
+ * A Pixmap can never change size, so it is never necessary to call
+ * this function on a surface created for a Pixmap.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_xlib_surface_set_size (cairo_surface_t *abstract_surface,
+			     int              width,
+			     int              height)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *) abstract_surface;
+    cairo_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    if (surface->width == width && surface->height == height)
+	return;
+
+    if (! valid_size (width, height)) {
+	_cairo_surface_set_error (abstract_surface,
+				  _cairo_error (CAIRO_STATUS_INVALID_SIZE));
+	return;
+    }
+
+    status = _cairo_surface_flush (abstract_surface, 0);
+    if (unlikely (status)) {
+	_cairo_surface_set_error (abstract_surface, status);
+	return;
+    }
+
+    _cairo_xlib_surface_discard_shm (surface);
+
+    surface->width = width;
+    surface->height = height;
+}
+
+/**
+ * cairo_xlib_surface_set_drawable:
+ * @surface: a #cairo_surface_t for the XLib backend
+ * @drawable: the new drawable for the surface
+ * @width: the width of the new drawable
+ * @height: the height of the new drawable
+ *
+ * Informs cairo of a new X Drawable underlying the
+ * surface. The drawable must match the display, screen
+ * and format of the existing drawable or the application
+ * will get X protocol errors and will probably terminate.
+ * No checks are done by this function to ensure this
+ * compatibility.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_xlib_surface_set_drawable (cairo_surface_t   *abstract_surface,
+				 Drawable	    drawable,
+				 int		    width,
+				 int		    height)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *)abstract_surface;
+    cairo_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+	return;
+    }
+
+    if (! valid_size (width, height)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (CAIRO_STATUS_INVALID_SIZE));
+	return;
+    }
+
+    /* XXX: and what about this case? */
+    if (surface->owns_pixmap)
+	return;
+
+    status = _cairo_surface_flush (abstract_surface, 0);
+    if (unlikely (status)) {
+	_cairo_surface_set_error (abstract_surface, status);
+	return;
+    }
+
+    if (surface->drawable != drawable) {
+        cairo_xlib_display_t *display;
+
+        status = _cairo_xlib_display_acquire (surface->base.device, &display);
+        if (unlikely (status))
+            return;
+
+	X_DEBUG ((display->display, "set_drawable (drawable=%x)", (unsigned int) drawable));
+
+	if (surface->picture != None) {
+	    XRenderFreePicture (display->display, surface->picture);
+	    if (unlikely (status)) {
+		status = _cairo_surface_set_error (&surface->base, status);
+		return;
+	    }
+
+	    surface->picture = None;
+	}
+
+        cairo_device_release (&display->base);
+
+	surface->drawable = drawable;
+    }
+
+    if (surface->width != width || surface->height != height) {
+	_cairo_xlib_surface_discard_shm (surface);
+
+	surface->width = width;
+	surface->height = height;
+    }
+}
+
+/**
+ * cairo_xlib_surface_get_display:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Get the X Display for the underlying X Drawable.
+ *
+ * Return value: the display.
+ *
+ * Since: 1.2
+ **/
+Display *
+cairo_xlib_surface_get_display (cairo_surface_t *abstract_surface)
+{
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return ((cairo_xlib_display_t *) abstract_surface->device)->display;
+}
+
+/**
+ * cairo_xlib_surface_get_drawable:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Get the underlying X Drawable used for the surface.
+ *
+ * Return value: the drawable.
+ *
+ * Since: 1.2
+ **/
+Drawable
+cairo_xlib_surface_get_drawable (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->drawable;
+}
+
+/**
+ * cairo_xlib_surface_get_screen:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Get the X Screen for the underlying X Drawable.
+ *
+ * Return value: the screen.
+ *
+ * Since: 1.2
+ **/
+Screen *
+cairo_xlib_surface_get_screen (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return surface->screen->screen;
+}
+
+/**
+ * cairo_xlib_surface_get_visual:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Gets the X Visual associated with @surface, suitable for use with the
+ * underlying X Drawable.  If @surface was created by
+ * cairo_xlib_surface_create(), the return value is the Visual passed to that
+ * constructor.
+ *
+ * Return value: the Visual or %NULL if there is no appropriate Visual for
+ * @surface.
+ *
+ * Since: 1.2
+ **/
+Visual *
+cairo_xlib_surface_get_visual (cairo_surface_t *surface)
+{
+    cairo_xlib_surface_t *xlib_surface = (cairo_xlib_surface_t *) surface;
+
+    if (! _cairo_surface_is_xlib (surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return xlib_surface->visual;
+}
+
+/**
+ * cairo_xlib_surface_get_depth:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Get the number of bits used to represent each pixel value.
+ *
+ * Return value: the depth of the surface in bits.
+ *
+ * Since: 1.2
+ **/
+int
+cairo_xlib_surface_get_depth (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->depth;
+}
+
+/**
+ * cairo_xlib_surface_get_width:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Get the width of the X Drawable underlying the surface in pixels.
+ *
+ * Return value: the width of the surface in pixels.
+ *
+ * Since: 1.2
+ **/
+int
+cairo_xlib_surface_get_width (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->width;
+}
+
+/**
+ * cairo_xlib_surface_get_height:
+ * @surface: a #cairo_xlib_surface_t
+ *
+ * Get the height of the X Drawable underlying the surface in pixels.
+ *
+ * Return value: the height of the surface in pixels.
+ *
+ * Since: 1.2
+ **/
+int
+cairo_xlib_surface_get_height (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_surface_t *surface = (cairo_xlib_surface_t *) abstract_surface;
+
+    if (! _cairo_surface_is_xlib (abstract_surface)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->height;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-visual.c b/libs/cairo-1.16.0/src/cairo-xlib-visual.c
new file mode 100644
index 0000000..979cd5b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-visual.c
@@ -0,0 +1,194 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+
+/* A perceptual distance metric between two colors. No sqrt needed
+ * since the square of the distance is still a valid metric. */
+
+/* XXX: This is currently using linear distance in RGB space which is
+ * decidedly not perceptually linear. If someone cared a lot about the
+ * quality, they might choose something else here. Then again, they
+ * might also choose not to use a PseudoColor visual... */
+static inline int
+_color_distance (unsigned short r1, unsigned short g1, unsigned short b1,
+		 unsigned short r2, unsigned short g2, unsigned short b2)
+{
+    r1 >>= 8; g1 >>= 8; b1 >>= 8;
+    r2 >>= 8; g2 >>= 8; b2 >>= 8;
+
+    return ((r2 - r1) * (r2 - r1) +
+	    (g2 - g1) * (g2 - g1) +
+	    (b2 - b1) * (b2 - b1));
+}
+
+cairo_status_t
+_cairo_xlib_visual_info_create (Display *dpy,
+	                        int screen,
+				VisualID visualid,
+				cairo_xlib_visual_info_t **out)
+{
+    cairo_xlib_visual_info_t *info;
+    Colormap colormap = DefaultColormap (dpy, screen);
+    XColor color;
+    int gray, red, green, blue;
+    int i, j, distance, min_distance = 0;
+    XColor colors[256];
+    unsigned short cube_index_to_short[CUBE_SIZE];
+    unsigned short ramp_index_to_short[RAMP_SIZE];
+    unsigned char  gray_to_pseudocolor[RAMP_SIZE];
+
+    for (i = 0; i < CUBE_SIZE; i++)
+	cube_index_to_short[i] = (0xffff * i + ((CUBE_SIZE-1)>>1)) / (CUBE_SIZE-1);
+    for (i = 0; i < RAMP_SIZE; i++)
+	ramp_index_to_short[i] = (0xffff * i + ((RAMP_SIZE-1)>>1)) / (RAMP_SIZE-1);
+
+    info = _cairo_malloc (sizeof (cairo_xlib_visual_info_t));
+    if (unlikely (info == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cairo_list_init (&info->link);
+    info->visualid = visualid;
+
+    /* Allocate a gray ramp and a color cube.
+     * Give up as soon as failures start. */
+
+    for (gray = 0; gray < RAMP_SIZE; gray++) {
+	color.red = color.green = color.blue = ramp_index_to_short[gray];
+	if (! XAllocColor (dpy, colormap, &color))
+	    goto DONE_ALLOCATE;
+    }
+
+    /* XXX: Could do this in a more clever order to have the best
+     * possible results from early failure. Could also choose a cube
+     * uniformly distributed in a better space than RGB. */
+    for (red = 0; red < CUBE_SIZE; red++) {
+	for (green = 0; green < CUBE_SIZE; green++) {
+	    for (blue = 0; blue < CUBE_SIZE; blue++) {
+		color.red = cube_index_to_short[red];
+		color.green = cube_index_to_short[green];
+		color.blue = cube_index_to_short[blue];
+		color.pixel = 0;
+		color.flags = 0;
+		color.pad = 0;
+		if (! XAllocColor (dpy, colormap, &color))
+		    goto DONE_ALLOCATE;
+	    }
+	}
+    }
+  DONE_ALLOCATE:
+
+    for (i = 0; i < ARRAY_LENGTH (colors); i++)
+	colors[i].pixel = i;
+    XQueryColors (dpy, colormap, colors, ARRAY_LENGTH (colors));
+
+    /* Search for nearest colors within allocated colormap. */
+    for (gray = 0; gray < RAMP_SIZE; gray++) {
+	for (i = 0; i < 256; i++) {
+	    distance = _color_distance (ramp_index_to_short[gray],
+					ramp_index_to_short[gray],
+					ramp_index_to_short[gray],
+					colors[i].red,
+					colors[i].green,
+					colors[i].blue);
+	    if (i == 0 || distance < min_distance) {
+		gray_to_pseudocolor[gray] = colors[i].pixel;
+		min_distance = distance;
+		if (!min_distance)
+		    break;
+	    }
+	}
+    }
+    for (red = 0; red < CUBE_SIZE; red++) {
+	for (green = 0; green < CUBE_SIZE; green++) {
+	    for (blue = 0; blue < CUBE_SIZE; blue++) {
+		for (i = 0; i < 256; i++) {
+		    distance = _color_distance (cube_index_to_short[red],
+						cube_index_to_short[green],
+						cube_index_to_short[blue],
+						colors[i].red,
+						colors[i].green,
+						colors[i].blue);
+		    if (i == 0 || distance < min_distance) {
+			info->cube_to_pseudocolor[red][green][blue] = colors[i].pixel;
+			min_distance = distance;
+			if (!min_distance)
+			    break;
+		    }
+		}
+	    }
+	}
+    }
+
+    for (i = 0, j = 0; i < 256; i++) {
+	if (j < CUBE_SIZE - 1 && (((i<<8)+i) - (int)cube_index_to_short[j]) > ((int)cube_index_to_short[j+1] - ((i<<8)+i)))
+	    j++;
+	info->field8_to_cube[i] = j;
+
+	info->dither8_to_cube[i] = ((int)i - 128) / (CUBE_SIZE - 1);
+    }
+    for (i = 0, j = 0; i < 256; i++) {
+	if (j < RAMP_SIZE - 1 && (((i<<8)+i) - (int)ramp_index_to_short[j]) > ((int)ramp_index_to_short[j+1] - ((i<<8)+i)))
+	    j++;
+	info->gray8_to_pseudocolor[i] = gray_to_pseudocolor[j];
+    }
+
+    for (i = 0; i < 256; i++) {
+	info->colors[i].a = 0xff;
+	info->colors[i].r = colors[i].red   >> 8;
+	info->colors[i].g = colors[i].green >> 8;
+	info->colors[i].b = colors[i].blue  >> 8;
+    }
+
+    *out = info;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_xlib_visual_info_destroy (cairo_xlib_visual_info_t *info)
+{
+    /* No need for XFreeColors() whilst using DefaultColormap */
+    _cairo_list_del (&info->link);
+    free (info);
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-xcb-surface.c b/libs/cairo-1.16.0/src/cairo-xlib-xcb-surface.c
new file mode 100644
index 0000000..4fa9f28
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-xcb-surface.c
@@ -0,0 +1,848 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#if CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib.h"
+#include "cairo-xcb.h"
+
+#include "cairo-xcb-private.h"
+#include "cairo-xlib-xrender-private.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-list-inline.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+#include <X11/Xlib-xcb.h>
+#include <X11/Xlibint.h>	/* For XESetCloseDisplay */
+
+struct cairo_xlib_xcb_display_t {
+    cairo_device_t  base;
+
+    Display        *dpy;
+    cairo_device_t *xcb_device;
+    XExtCodes      *codes;
+
+    cairo_list_t    link;
+};
+typedef struct cairo_xlib_xcb_display_t cairo_xlib_xcb_display_t;
+
+/* List of all #cairo_xlib_xcb_display_t alive,
+ * protected by _cairo_xlib_display_mutex */
+static cairo_list_t displays;
+
+static cairo_surface_t *
+_cairo_xlib_xcb_surface_create (void *dpy,
+				void *scr,
+				void *visual,
+				void *format,
+				cairo_surface_t *xcb);
+
+static cairo_surface_t *
+_cairo_xlib_xcb_surface_create_similar (void			*abstract_other,
+					cairo_content_t		 content,
+					int			 width,
+					int			 height)
+{
+    cairo_xlib_xcb_surface_t *other = abstract_other;
+    cairo_surface_t *xcb;
+
+    xcb = other->xcb->base.backend->create_similar (other->xcb, content, width, height);
+    if (unlikely (xcb == NULL || xcb->status))
+	return xcb;
+
+    return _cairo_xlib_xcb_surface_create (other->display, other->screen, NULL, NULL, xcb);
+}
+
+static cairo_status_t
+_cairo_xlib_xcb_surface_finish (void *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    cairo_surface_finish (&surface->xcb->base);
+    status = surface->xcb->base.status;
+    cairo_surface_destroy (&surface->xcb->base);
+    surface->xcb = NULL;
+
+    return status;
+}
+
+static cairo_surface_t *
+_cairo_xlib_xcb_surface_create_similar_image (void			*abstract_other,
+					      cairo_format_t		 format,
+					      int			 width,
+					      int			 height)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_other;
+    return cairo_surface_create_similar_image (&surface->xcb->base, format, width, height);
+}
+
+static cairo_image_surface_t *
+_cairo_xlib_xcb_surface_map_to_image (void *abstract_surface,
+				      const cairo_rectangle_int_t *extents)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_map_to_image (&surface->xcb->base, extents);
+}
+
+static cairo_int_status_t
+_cairo_xlib_xcb_surface_unmap (void *abstract_surface,
+			       cairo_image_surface_t *image)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_unmap_image (&surface->xcb->base, image);
+}
+
+static cairo_surface_t *
+_cairo_xlib_xcb_surface_source (void *abstract_surface,
+				cairo_rectangle_int_t *extents)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_get_source (&surface->xcb->base, extents);
+}
+
+static cairo_status_t
+_cairo_xlib_xcb_surface_acquire_source_image (void *abstract_surface,
+					      cairo_image_surface_t **image_out,
+					      void **image_extra)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_acquire_source_image (&surface->xcb->base,
+						image_out, image_extra);
+}
+
+static void
+_cairo_xlib_xcb_surface_release_source_image (void *abstract_surface,
+					      cairo_image_surface_t *image_out,
+					      void *image_extra)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    _cairo_surface_release_source_image (&surface->xcb->base, image_out, image_extra);
+}
+
+static cairo_bool_t
+_cairo_xlib_xcb_surface_get_extents (void *abstract_surface,
+				     cairo_rectangle_int_t *extents)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_get_extents (&surface->xcb->base, extents);
+}
+
+static void
+_cairo_xlib_xcb_surface_get_font_options (void *abstract_surface,
+					  cairo_font_options_t *options)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    cairo_surface_get_font_options (&surface->xcb->base, options);
+}
+
+static cairo_int_status_t
+_cairo_xlib_xcb_surface_paint (void			*abstract_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_paint (&surface->xcb->base, op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_xcb_surface_mask (void			*abstract_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_mask (&surface->xcb->base, op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_xcb_surface_stroke (void				*abstract_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t		*source,
+				const cairo_path_fixed_t	*path,
+				const cairo_stroke_style_t	*style,
+				const cairo_matrix_t		*ctm,
+				const cairo_matrix_t		*ctm_inverse,
+				double				 tolerance,
+				cairo_antialias_t		 antialias,
+				const cairo_clip_t		*clip)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_stroke (&surface->xcb->base,
+				  op, source, path, style, ctm, ctm_inverse,
+				  tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_xcb_surface_fill (void			*abstract_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		 fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias,
+			      const cairo_clip_t	*clip)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_fill (&surface->xcb->base,
+				op, source, path,
+				fill_rule, tolerance,
+				antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_xlib_xcb_surface_glyphs (void			*abstract_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t	*clip)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    return _cairo_surface_show_text_glyphs (&surface->xcb->base, op, source,
+					    NULL, 0,
+					    glyphs, num_glyphs,
+					    NULL, 0, 0,
+					    scaled_font, clip);
+}
+
+static cairo_status_t
+_cairo_xlib_xcb_surface_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    /* We have to call cairo_surface_flush() to make sure snapshots are detached */
+    return _cairo_surface_flush (&surface->xcb->base, flags);
+}
+
+static cairo_status_t
+_cairo_xlib_xcb_surface_mark_dirty (void *abstract_surface,
+				    int x, int y,
+				    int width, int height)
+{
+    cairo_xlib_xcb_surface_t *surface = abstract_surface;
+    cairo_surface_mark_dirty_rectangle (&surface->xcb->base, x, y, width, height);
+    return cairo_surface_status (&surface->xcb->base);
+}
+
+static const cairo_surface_backend_t _cairo_xlib_xcb_surface_backend = {
+    CAIRO_SURFACE_TYPE_XLIB,
+    _cairo_xlib_xcb_surface_finish,
+
+    _cairo_default_context_create, /* XXX */
+
+    _cairo_xlib_xcb_surface_create_similar,
+    _cairo_xlib_xcb_surface_create_similar_image,
+    _cairo_xlib_xcb_surface_map_to_image,
+    _cairo_xlib_xcb_surface_unmap,
+
+    _cairo_xlib_xcb_surface_source,
+    _cairo_xlib_xcb_surface_acquire_source_image,
+    _cairo_xlib_xcb_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_xlib_xcb_surface_get_extents,
+    _cairo_xlib_xcb_surface_get_font_options,
+
+    _cairo_xlib_xcb_surface_flush,
+    _cairo_xlib_xcb_surface_mark_dirty,
+
+    _cairo_xlib_xcb_surface_paint,
+    _cairo_xlib_xcb_surface_mask,
+    _cairo_xlib_xcb_surface_stroke,
+    _cairo_xlib_xcb_surface_fill,
+    NULL, /* fill_stroke */
+    _cairo_xlib_xcb_surface_glyphs,
+};
+
+static void
+_cairo_xlib_xcb_display_finish (void *abstract_display)
+{
+    cairo_xlib_xcb_display_t *display = (cairo_xlib_xcb_display_t *) abstract_display;
+
+    CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex);
+    cairo_list_del (&display->link);
+    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+
+    cairo_device_destroy (display->xcb_device);
+    display->xcb_device = NULL;
+
+    XESetCloseDisplay (display->dpy, display->codes->extension, NULL);
+    /* Drop the reference from _cairo_xlib_xcb_device_create */
+    cairo_device_destroy (&display->base);
+}
+
+static int
+_cairo_xlib_xcb_close_display(Display *dpy, XExtCodes *codes)
+{
+    cairo_xlib_xcb_display_t *display;
+
+    CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex);
+    cairo_list_foreach_entry (display,
+			      cairo_xlib_xcb_display_t,
+			      &displays,
+			      link)
+    {
+	if (display->dpy == dpy)
+	{
+	    /* _cairo_xlib_xcb_display_finish will lock the mutex again
+	     * -> deadlock (This mutex isn't recursive) */
+	    cairo_device_reference (&display->base);
+	    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+
+	    /* Make sure the xcb and xlib-xcb devices are finished */
+	    cairo_device_finish (display->xcb_device);
+	    cairo_device_finish (&display->base);
+
+	    cairo_device_destroy (&display->base);
+	    return 0;
+	}
+    }
+    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+
+    return 0;
+}
+
+static const cairo_device_backend_t _cairo_xlib_xcb_device_backend = {
+    CAIRO_DEVICE_TYPE_XLIB,
+
+    NULL,
+    NULL,
+
+    NULL, /* flush */
+    _cairo_xlib_xcb_display_finish,
+    free, /* destroy */
+};
+
+static cairo_device_t *
+_cairo_xlib_xcb_device_create (Display *dpy, cairo_device_t *xcb_device)
+{
+    cairo_xlib_xcb_display_t *display = NULL;
+    cairo_device_t *device;
+
+    if (xcb_device == NULL)
+	return NULL;
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    CAIRO_MUTEX_LOCK (_cairo_xlib_display_mutex);
+    if (displays.next == NULL) {
+	cairo_list_init (&displays);
+    }
+
+    cairo_list_foreach_entry (display,
+			      cairo_xlib_xcb_display_t,
+			      &displays,
+			      link)
+    {
+	if (display->dpy == dpy) {
+	    /* Maintain MRU order. */
+	    if (displays.next != &display->link)
+		cairo_list_move (&display->link, &displays);
+
+	    /* Grab a reference for our caller */
+	    device = cairo_device_reference (&display->base);
+	    assert (display->xcb_device == xcb_device);
+	    goto unlock;
+	}
+    }
+
+    display = _cairo_malloc (sizeof (cairo_xlib_xcb_display_t));
+    if (unlikely (display == NULL)) {
+	device = _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	goto unlock;
+    }
+
+    display->codes = XAddExtension (dpy);
+    if (unlikely (display->codes == NULL)) {
+	device = _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+	free (display);
+	goto unlock;
+    }
+
+    _cairo_device_init (&display->base, &_cairo_xlib_xcb_device_backend);
+
+    XESetCloseDisplay (dpy, display->codes->extension, _cairo_xlib_xcb_close_display);
+    /* Add a reference for _cairo_xlib_xcb_display_finish. This basically means
+     * that the device's reference count never drops to zero
+     * as long as our Display* is alive. We need this because there is no
+     * "XDelExtension" to undo XAddExtension and having lots of registered
+     * extensions slows down libX11. */
+    cairo_device_reference (&display->base);
+
+    display->dpy = dpy;
+    display->xcb_device = cairo_device_reference(xcb_device);
+
+    cairo_list_add (&display->link, &displays);
+    device = &display->base;
+
+unlock:
+    CAIRO_MUTEX_UNLOCK (_cairo_xlib_display_mutex);
+
+    return device;
+}
+
+static cairo_surface_t *
+_cairo_xlib_xcb_surface_create (void *dpy,
+				void *scr,
+				void *visual,
+				void *format,
+				cairo_surface_t *xcb)
+{
+    cairo_xlib_xcb_surface_t *surface;
+
+    if (unlikely (xcb->status))
+	return xcb;
+
+    surface = _cairo_malloc (sizeof (*surface));
+    if (unlikely (surface == NULL)) {
+	cairo_surface_destroy (xcb);
+	return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_xlib_xcb_surface_backend,
+			 _cairo_xlib_xcb_device_create (dpy, xcb->device),
+			 xcb->content,
+			 FALSE); /* is_vector */
+
+    /* _cairo_surface_init() got another reference to the device, drop ours */
+    cairo_device_destroy (surface->base.device);
+
+    surface->display = dpy;
+    surface->screen = scr;
+    surface->visual = visual;
+    surface->format = format;
+    surface->xcb = (cairo_xcb_surface_t *) xcb;
+
+    return &surface->base;
+}
+
+static Screen *
+_cairo_xlib_screen_from_visual (Display *dpy, Visual *visual)
+{
+    int s, d, v;
+
+    for (s = 0; s < ScreenCount (dpy); s++) {
+	Screen *screen;
+
+	screen = ScreenOfDisplay (dpy, s);
+	if (visual == DefaultVisualOfScreen (screen))
+	    return screen;
+
+	for (d = 0; d < screen->ndepths; d++) {
+	    Depth  *depth;
+
+	    depth = &screen->depths[d];
+	    for (v = 0; v < depth->nvisuals; v++)
+		if (visual == &depth->visuals[v])
+		    return screen;
+	}
+    }
+
+    return NULL;
+}
+
+cairo_surface_t *
+cairo_xlib_surface_create (Display     *dpy,
+			   Drawable	drawable,
+			   Visual      *visual,
+			   int		width,
+			   int		height)
+{
+    Screen *scr;
+    xcb_visualtype_t xcb_visual;
+
+    scr = _cairo_xlib_screen_from_visual (dpy, visual);
+    if (scr == NULL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_VISUAL));
+
+    xcb_visual.visual_id = visual->visualid;
+#if defined(__cplusplus) || defined(c_plusplus)
+    xcb_visual._class = visual->c_class;
+#else
+    xcb_visual._class = visual->class;
+#endif
+    xcb_visual.bits_per_rgb_value = visual->bits_per_rgb;
+    xcb_visual.colormap_entries = visual->map_entries;
+    xcb_visual.red_mask = visual->red_mask;
+    xcb_visual.green_mask = visual->green_mask;
+    xcb_visual.blue_mask = visual->blue_mask;
+
+    return _cairo_xlib_xcb_surface_create (dpy, scr, visual, NULL,
+					   cairo_xcb_surface_create (XGetXCBConnection (dpy),
+								     drawable,
+								     &xcb_visual,
+								     width, height));
+}
+
+static xcb_screen_t *
+_cairo_xcb_screen_from_root (xcb_connection_t *connection,
+			     xcb_window_t id)
+{
+    xcb_screen_iterator_t s;
+
+    s = xcb_setup_roots_iterator (xcb_get_setup (connection));
+    for (; s.rem; xcb_screen_next (&s)) {
+	if (s.data->root == id)
+	    return s.data;
+    }
+
+    return NULL;
+}
+
+cairo_surface_t *
+cairo_xlib_surface_create_for_bitmap (Display  *dpy,
+				      Pixmap	bitmap,
+				      Screen   *scr,
+				      int	width,
+				      int	height)
+{
+    xcb_connection_t *connection = XGetXCBConnection (dpy);
+    xcb_screen_t *screen = _cairo_xcb_screen_from_root (connection, (xcb_window_t) scr->root);
+    return _cairo_xlib_xcb_surface_create (dpy, scr, NULL, NULL,
+					   cairo_xcb_surface_create_for_bitmap (connection,
+										screen,
+										bitmap,
+										width, height));
+}
+
+#if CAIRO_HAS_XLIB_XRENDER_SURFACE
+cairo_surface_t *
+cairo_xlib_surface_create_with_xrender_format (Display		    *dpy,
+					       Drawable		    drawable,
+					       Screen		    *scr,
+					       XRenderPictFormat    *format,
+					       int		    width,
+					       int		    height)
+{
+    xcb_render_pictforminfo_t xcb_format;
+    xcb_connection_t *connection;
+    xcb_screen_t *screen;
+
+    xcb_format.id = format->id;
+    xcb_format.type = format->type;
+    xcb_format.depth = format->depth;
+    xcb_format.direct.red_shift = format->direct.red;
+    xcb_format.direct.red_mask = format->direct.redMask;
+    xcb_format.direct.green_shift = format->direct.green;
+    xcb_format.direct.green_mask = format->direct.greenMask;
+    xcb_format.direct.blue_shift = format->direct.blue;
+    xcb_format.direct.blue_mask = format->direct.blueMask;
+    xcb_format.direct.alpha_shift = format->direct.alpha;
+    xcb_format.direct.alpha_mask = format->direct.alphaMask;
+    xcb_format.colormap = format->colormap;
+
+    connection = XGetXCBConnection (dpy);
+    screen = _cairo_xcb_screen_from_root (connection, (xcb_window_t) scr->root);
+
+    return _cairo_xlib_xcb_surface_create (dpy, scr, NULL, format,
+					   cairo_xcb_surface_create_with_xrender_format (connection, screen,
+											 drawable,
+											 &xcb_format,
+											 width, height));
+}
+
+XRenderPictFormat *
+cairo_xlib_surface_get_xrender_format (cairo_surface_t *surface)
+{
+    cairo_xlib_xcb_surface_t *xlib_surface = (cairo_xlib_xcb_surface_t *) surface;
+
+    /* Throw an error for a non-xlib surface */
+    if (surface->type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return xlib_surface->format;
+}
+#endif
+
+void
+cairo_xlib_surface_set_size (cairo_surface_t *abstract_surface,
+			     int              width,
+			     int              height)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+    cairo_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return;
+    }
+
+    cairo_xcb_surface_set_size (&surface->xcb->base, width, height);
+    if (unlikely (surface->xcb->base.status)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (surface->xcb->base.status));
+    }
+}
+
+void
+cairo_xlib_surface_set_drawable (cairo_surface_t   *abstract_surface,
+				 Drawable	    drawable,
+				 int		    width,
+				 int		    height)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *)abstract_surface;
+    cairo_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return;
+    if (unlikely (abstract_surface->finished)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+	return;
+    }
+
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return;
+    }
+
+    cairo_xcb_surface_set_drawable (&surface->xcb->base, drawable, width, height);
+    if (unlikely (surface->xcb->base.status)) {
+	status = _cairo_surface_set_error (abstract_surface,
+		                           _cairo_error (surface->xcb->base.status));
+    }
+}
+
+Display *
+cairo_xlib_surface_get_display (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return surface->display;
+}
+
+Drawable
+cairo_xlib_surface_get_drawable (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_FINISHED);
+	return 0;
+    }
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+    /* This can happen when e.g. create_similar falls back to an image surface
+     * because we don't have the RENDER extension. */
+    if (surface->xcb->base.type != CAIRO_SURFACE_TYPE_XCB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->xcb->drawable;
+}
+
+Screen *
+cairo_xlib_surface_get_screen (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return surface->screen;
+}
+
+Visual *
+cairo_xlib_surface_get_visual (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return NULL;
+    }
+
+    return surface->visual;
+}
+
+int
+cairo_xlib_surface_get_depth (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_FINISHED);
+	return 0;
+    }
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+    /* This can happen when e.g. create_similar falls back to an image surface
+     * because we don't have the RENDER extension. */
+    if (surface->xcb->base.type != CAIRO_SURFACE_TYPE_XCB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->xcb->depth;
+}
+
+int
+cairo_xlib_surface_get_width (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_FINISHED);
+	return 0;
+    }
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+    /* This can happen when e.g. create_similar falls back to an image surface
+     * because we don't have the RENDER extension. */
+    if (surface->xcb->base.type != CAIRO_SURFACE_TYPE_XCB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->xcb->width;
+}
+
+int
+cairo_xlib_surface_get_height (cairo_surface_t *abstract_surface)
+{
+    cairo_xlib_xcb_surface_t *surface = (cairo_xlib_xcb_surface_t *) abstract_surface;
+
+    if (unlikely (abstract_surface->finished)) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_FINISHED);
+	return 0;
+    }
+    if (surface->base.type != CAIRO_SURFACE_TYPE_XLIB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+    /* This can happen when e.g. create_similar falls back to an image surface
+     * because we don't have the RENDER extension. */
+    if (surface->xcb->base.type != CAIRO_SURFACE_TYPE_XCB) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->xcb->height;
+}
+
+void
+cairo_xlib_device_debug_cap_xrender_version (cairo_device_t *device,
+					     int major, int minor)
+{
+    cairo_xlib_xcb_display_t *display = (cairo_xlib_xcb_display_t *) device;
+
+    if (device == NULL || device->status)
+	return;
+
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB)
+	return;
+
+    cairo_xcb_device_debug_cap_xrender_version (display->xcb_device,
+						major, minor);
+}
+
+void
+cairo_xlib_device_debug_set_precision (cairo_device_t *device,
+				       int precision)
+{
+    cairo_xlib_xcb_display_t *display = (cairo_xlib_xcb_display_t *) device;
+
+    if (device == NULL || device->status)
+	return;
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return;
+    }
+
+    cairo_xcb_device_debug_set_precision (display->xcb_device, precision);
+}
+
+int
+cairo_xlib_device_debug_get_precision (cairo_device_t *device)
+{
+    cairo_xlib_xcb_display_t *display = (cairo_xlib_xcb_display_t *) device;
+
+    if (device == NULL || device->status)
+	return -1;
+    if (device->backend->type != CAIRO_DEVICE_TYPE_XLIB) {
+	cairo_status_t status;
+
+	status = _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+	(void) status;
+	return -1;
+    }
+
+    return cairo_xcb_device_debug_get_precision (display->xcb_device);
+}
+
+#endif /* CAIRO_HAS_XLIB_XCB_FUNCTIONS */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-xrender-private.h b/libs/cairo-1.16.0/src/cairo-xlib-xrender-private.h
new file mode 100644
index 0000000..9076946
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-xrender-private.h
@@ -0,0 +1,1173 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ */
+
+#ifndef CAIRO_XLIB_XRENDER_PRIVATE_H
+#define CAIRO_XLIB_XRENDER_PRIVATE_H
+
+#include "cairo-features.h"
+#include "cairo-compiler-private.h"
+
+#include <X11/Xlib.h>
+
+/* These prototypes are used when defining interfaces missing from the
+ * render headers.  As it happens, it is the case that all libxrender
+ * functions take a pointer as first argument. */
+
+__attribute__((__unused__)) static void   _void_consume        (void *p, ...)   { }
+__attribute__((__unused__)) static void * _voidp_consume       (void *p, ...)   { return (void *)0; }
+__attribute__((__unused__)) static int    _int_consume         (void *p, ...)   { return 0; }
+__attribute__((__unused__)) static void   _void_consume_free   (Display *p, XID n) { }
+
+
+#if CAIRO_HAS_XLIB_XRENDER_SURFACE
+
+#include "cairo-xlib-xrender.h"
+
+#include <X11/extensions/Xrender.h>
+#include <X11/extensions/renderproto.h>
+
+/* We require Render >= 0.6.  The following defines were only added in
+ * 0.10.  Make sure they are defined.
+ */
+
+/* Filters included in 0.10 */
+#ifndef FilterConvolution
+#define FilterConvolution		    "convolution"
+#endif
+
+/* Extended repeat attributes included in 0.10 */
+#ifndef RepeatNone
+#define RepeatNone                          0
+#define RepeatNormal                        1
+#define RepeatPad                           2
+#define RepeatReflect                       3
+#endif
+
+
+#ifndef PictOptBlendMinimum
+/*
+ * Operators only available in version 0.11
+ */
+#define PictOpBlendMinimum			    0x30
+#define PictOpMultiply				    0x30
+#define PictOpScreen				    0x31
+#define PictOpOverlay				    0x32
+#define PictOpDarken				    0x33
+#define PictOpLighten				    0x34
+#define PictOpColorDodge			    0x35
+#define PictOpColorBurn				    0x36
+#define PictOpHardLight				    0x37
+#define PictOpSoftLight				    0x38
+#define PictOpDifference			    0x39
+#define PictOpExclusion				    0x3a
+#define PictOpHSLHue				    0x3b
+#define PictOpHSLSaturation			    0x3c
+#define PictOpHSLColor				    0x3d
+#define PictOpHSLLuminosity			    0x3e
+#define PictOpBlendMaximum			    0x3e
+#endif
+
+#if !HAVE_XRENDERCREATESOLIDFILL
+#define XRenderCreateSolidFill				_int_consume
+#endif
+
+#if !HAVE_XRENDERCREATELINEARGRADIENT
+#define XRenderCreateLinearGradient			_int_consume
+
+typedef struct _XLinearGradient {
+    XPointFixed p1;
+    XPointFixed p2;
+} XLinearGradient;
+#endif
+
+#if !HAVE_XRENDERCREATERADIALGRADIENT
+#define XRenderCreateRadialGradient			_int_consume
+
+typedef struct _XCircle {
+    XFixed x;
+    XFixed y;
+    XFixed radius;
+} XCircle;
+typedef struct _XRadialGradient {
+    XCircle inner;
+    XCircle outer;
+} XRadialGradient;
+#endif
+
+#if !HAVE_XRENDERCREATECONICALGRADIENT
+#define XRenderCreateConicalGradient			_int_consume
+
+typedef struct _XConicalGradient {
+    XPointFixed center;
+    XFixed angle; /* in degrees */
+} XConicalGradient;
+#endif
+
+
+#else /* !CAIRO_HAS_XLIB_XRENDER_SURFACE */
+
+/* Provide dummy symbols and macros to get it compile and take the fallback
+ * route, just like as if Xrender is not available in the server at run-time. */
+
+
+/* Functions */
+
+#define XRenderQueryExtension				_int_consume
+#define XRenderQueryVersion				_int_consume
+#define XRenderQueryFormats				_int_consume
+#define XRenderQuerySubpixelOrder			_int_consume
+#define XRenderSetSubpixelOrder				_int_consume
+#define XRenderFindVisualFormat				_voidp_consume
+#define XRenderFindFormat				_voidp_consume
+#define XRenderFindStandardFormat			_voidp_consume
+#define XRenderQueryPictIndexValues			_voidp_consume
+#define XRenderCreatePicture				_int_consume
+#define XRenderChangePicture				_void_consume
+#define XRenderSetPictureClipRectangles			_void_consume
+#define XRenderSetPictureClipRegion			_void_consume
+#define XRenderSetPictureTransform			_void_consume
+#define XRenderFreePicture				_void_consume_free
+#define XRenderComposite				_void_consume
+#define XRenderCreateGlyphSet				_int_consume
+#define XRenderReferenceGlyphSet			_int_consume
+#define XRenderFreeGlyphSet				_void_consume_free
+#define XRenderAddGlyphs				_void_consume
+#define XRenderFreeGlyphs				_void_consume
+#define XRenderCompositeString8				_void_consume
+#define XRenderCompositeString16			_void_consume
+#define XRenderCompositeString32			_void_consume
+#define XRenderCompositeText8				(cairo_xrender_composite_text_func_t) _void_consume
+#define XRenderCompositeText16				_void_consume
+#define XRenderCompositeText32				_void_consume
+#define XRenderFillRectangle				_void_consume
+#define XRenderFillRectangles				_void_consume
+#define XRenderCompositeTrapezoids			_void_consume
+#define XRenderCompositeTriangles			_void_consume
+#define XRenderCompositeTriStrip			_void_consume
+#define XRenderCompositeTriFan				_void_consume
+#define XRenderCompositeDoublePoly			_void_consume
+#define XRenderParseColor				_int_consume
+#define XRenderCreateCursor				_int_consume
+#define XRenderQueryFilters				_voidp_consume
+#define XRenderSetPictureFilter				_void_consume
+#define XRenderCreateAnimCursor				_int_consume
+#define XRenderAddTraps					_void_consume
+#define XRenderCreateSolidFill				_int_consume
+#define XRenderCreateLinearGradient			_int_consume
+#define XRenderCreateRadialGradient			_int_consume
+#define XRenderCreateConicalGradient			_int_consume
+
+#define cairo_xlib_surface_create_with_xrender_format	_voidp_consume
+
+
+
+/* The rest of this file is copied from various Xrender header files, with
+ * the following copyright/license information:
+ *
+ * Copyright © 2000 SuSE, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  SuSE makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  Keith Packard, SuSE, Inc.
+ */
+
+
+/* Copied from X11/extensions/render.h */
+
+typedef unsigned long	Glyph;
+typedef unsigned long	GlyphSet;
+typedef unsigned long	Picture;
+typedef unsigned long	PictFormat;
+
+#define BadPictFormat			    0
+#define BadPicture			    1
+#define BadPictOp			    2
+#define BadGlyphSet			    3
+#define BadGlyph			    4
+#define RenderNumberErrors		    (BadGlyph+1)
+
+#define PictTypeIndexed			    0
+#define PictTypeDirect			    1
+
+#define PictOpMinimum			    0
+#define PictOpClear			    0
+#define PictOpSrc			    1
+#define PictOpDst			    2
+#define PictOpOver			    3
+#define PictOpOverReverse		    4
+#define PictOpIn			    5
+#define PictOpInReverse			    6
+#define PictOpOut			    7
+#define PictOpOutReverse		    8
+#define PictOpAtop			    9
+#define PictOpAtopReverse		    10
+#define PictOpXor			    11
+#define PictOpAdd			    12
+#define PictOpSaturate			    13
+#define PictOpMaximum			    13
+
+/*
+ * Operators only available in version 0.2
+ */
+#define PictOpDisjointMinimum			    0x10
+#define PictOpDisjointClear			    0x10
+#define PictOpDisjointSrc			    0x11
+#define PictOpDisjointDst			    0x12
+#define PictOpDisjointOver			    0x13
+#define PictOpDisjointOverReverse		    0x14
+#define PictOpDisjointIn			    0x15
+#define PictOpDisjointInReverse			    0x16
+#define PictOpDisjointOut			    0x17
+#define PictOpDisjointOutReverse		    0x18
+#define PictOpDisjointAtop			    0x19
+#define PictOpDisjointAtopReverse		    0x1a
+#define PictOpDisjointXor			    0x1b
+#define PictOpDisjointMaximum			    0x1b
+
+#define PictOpConjointMinimum			    0x20
+#define PictOpConjointClear			    0x20
+#define PictOpConjointSrc			    0x21
+#define PictOpConjointDst			    0x22
+#define PictOpConjointOver			    0x23
+#define PictOpConjointOverReverse		    0x24
+#define PictOpConjointIn			    0x25
+#define PictOpConjointInReverse			    0x26
+#define PictOpConjointOut			    0x27
+#define PictOpConjointOutReverse		    0x28
+#define PictOpConjointAtop			    0x29
+#define PictOpConjointAtopReverse		    0x2a
+#define PictOpConjointXor			    0x2b
+#define PictOpConjointMaximum			    0x2b
+
+/*
+ * Operators only available in version 0.11
+ */
+#define PictOpBlendMinimum			    0x30
+#define PictOpMultiply				    0x30
+#define PictOpScreen				    0x31
+#define PictOpOverlay				    0x32
+#define PictOpDarken				    0x33
+#define PictOpLighten				    0x34
+#define PictOpColorDodge			    0x35
+#define PictOpColorBurn				    0x36
+#define PictOpHardLight				    0x37
+#define PictOpSoftLight				    0x38
+#define PictOpDifference			    0x39
+#define PictOpExclusion				    0x3a
+#define PictOpHSLHue				    0x3b
+#define PictOpHSLSaturation			    0x3c
+#define PictOpHSLColor				    0x3d
+#define PictOpHSLLuminosity			    0x3e
+#define PictOpBlendMaximum			    0x3e
+
+#define PolyEdgeSharp			    0
+#define PolyEdgeSmooth			    1
+
+#define PolyModePrecise			    0
+#define PolyModeImprecise		    1
+
+#define CPRepeat			    (1 << 0)
+#define CPAlphaMap			    (1 << 1)
+#define CPAlphaXOrigin			    (1 << 2)
+#define CPAlphaYOrigin			    (1 << 3)
+#define CPClipXOrigin			    (1 << 4)
+#define CPClipYOrigin			    (1 << 5)
+#define CPClipMask			    (1 << 6)
+#define CPGraphicsExposure		    (1 << 7)
+#define CPSubwindowMode			    (1 << 8)
+#define CPPolyEdge			    (1 << 9)
+#define CPPolyMode			    (1 << 10)
+#define CPDither			    (1 << 11)
+#define CPComponentAlpha		    (1 << 12)
+#define CPLastBit			    12
+
+/* Filters included in 0.6 */
+#define FilterNearest			    "nearest"
+#define FilterBilinear			    "bilinear"
+/* Filters included in 0.10 */
+#define FilterConvolution		    "convolution"
+
+#define FilterFast			    "fast"
+#define FilterGood			    "good"
+#define FilterBest			    "best"
+
+#define FilterAliasNone			    -1
+
+/* Subpixel orders included in 0.6 */
+#define SubPixelUnknown			    0
+#define SubPixelHorizontalRGB		    1
+#define SubPixelHorizontalBGR		    2
+#define SubPixelVerticalRGB		    3
+#define SubPixelVerticalBGR		    4
+#define SubPixelNone			    5
+
+/* Extended repeat attributes included in 0.10 */
+#define RepeatNone                          0
+#define RepeatNormal                        1
+#define RepeatPad                           2
+#define RepeatReflect                       3
+
+
+
+/* Copied from X11/extensions/Xrender.h */
+
+typedef struct {
+    short   red;
+    short   redMask;
+    short   green;
+    short   greenMask;
+    short   blue;
+    short   blueMask;
+    short   alpha;
+    short   alphaMask;
+} XRenderDirectFormat;
+
+typedef struct {
+    PictFormat		id;
+    int			type;
+    int			depth;
+    XRenderDirectFormat	direct;
+    Colormap		colormap;
+} XRenderPictFormat;
+
+#define PictFormatID	    (1 << 0)
+#define PictFormatType	    (1 << 1)
+#define PictFormatDepth	    (1 << 2)
+#define PictFormatRed	    (1 << 3)
+#define PictFormatRedMask   (1 << 4)
+#define PictFormatGreen	    (1 << 5)
+#define PictFormatGreenMask (1 << 6)
+#define PictFormatBlue	    (1 << 7)
+#define PictFormatBlueMask  (1 << 8)
+#define PictFormatAlpha	    (1 << 9)
+#define PictFormatAlphaMask (1 << 10)
+#define PictFormatColormap  (1 << 11)
+
+typedef struct _XRenderPictureAttributes {
+    int 		repeat;
+    Picture		alpha_map;
+    int			alpha_x_origin;
+    int			alpha_y_origin;
+    int			clip_x_origin;
+    int			clip_y_origin;
+    Pixmap		clip_mask;
+    Bool		graphics_exposures;
+    int			subwindow_mode;
+    int			poly_edge;
+    int			poly_mode;
+    Atom		dither;
+    Bool		component_alpha;
+} XRenderPictureAttributes;
+
+typedef struct {
+    unsigned short   red;
+    unsigned short   green;
+    unsigned short   blue;
+    unsigned short   alpha;
+} XRenderColor;
+
+typedef struct _XGlyphInfo {
+    unsigned short  width;
+    unsigned short  height;
+    short	    x;
+    short	    y;
+    short	    xOff;
+    short	    yOff;
+} XGlyphInfo;
+
+typedef struct _XGlyphElt8 {
+    GlyphSet		    glyphset;
+    _Xconst char	    *chars;
+    int			    nchars;
+    int			    xOff;
+    int			    yOff;
+} XGlyphElt8;
+
+typedef struct _XGlyphElt16 {
+    GlyphSet		    glyphset;
+    _Xconst unsigned short  *chars;
+    int			    nchars;
+    int			    xOff;
+    int			    yOff;
+} XGlyphElt16;
+
+typedef struct _XGlyphElt32 {
+    GlyphSet		    glyphset;
+    _Xconst unsigned int    *chars;
+    int			    nchars;
+    int			    xOff;
+    int			    yOff;
+} XGlyphElt32;
+
+typedef double	XDouble;
+
+typedef struct _XPointDouble {
+    XDouble  x, y;
+} XPointDouble;
+
+#define XDoubleToFixed(f)    ((XFixed) ((f) * 65536))
+#define XFixedToDouble(f)    (((XDouble) (f)) / 65536)
+
+typedef int XFixed;
+
+typedef struct _XPointFixed {
+    XFixed  x, y;
+} XPointFixed;
+
+typedef struct _XLineFixed {
+    XPointFixed	p1, p2;
+} XLineFixed;
+
+typedef struct _XTriangle {
+    XPointFixed	p1, p2, p3;
+} XTriangle;
+
+typedef struct _XCircle {
+    XFixed x;
+    XFixed y;
+    XFixed radius;
+} XCircle;
+
+typedef struct _XTrapezoid {
+    XFixed  top, bottom;
+    XLineFixed	left, right;
+} XTrapezoid;
+
+typedef struct _XTransform {
+    XFixed  matrix[3][3];
+} XTransform;
+
+typedef struct _XFilters {
+    int	    nfilter;
+    char    **filter;
+    int	    nalias;
+    short   *alias;
+} XFilters;
+
+typedef struct _XIndexValue {
+    unsigned long    pixel;
+    unsigned short   red, green, blue, alpha;
+} XIndexValue;
+
+typedef struct _XAnimCursor {
+    Cursor	    cursor;
+    unsigned long   delay;
+} XAnimCursor;
+
+typedef struct _XSpanFix {
+    XFixed	    left, right, y;
+} XSpanFix;
+
+typedef struct _XTrap {
+    XSpanFix	    top, bottom;
+} XTrap;
+
+typedef struct _XLinearGradient {
+    XPointFixed p1;
+    XPointFixed p2;
+} XLinearGradient;
+
+typedef struct _XRadialGradient {
+    XCircle inner;
+    XCircle outer;
+} XRadialGradient;
+
+typedef struct _XConicalGradient {
+    XPointFixed center;
+    XFixed angle; /* in degrees */
+} XConicalGradient;
+
+#define PictStandardARGB32  0
+#define PictStandardRGB24   1
+#define PictStandardA8	    2
+#define PictStandardA4	    3
+#define PictStandardA1	    4
+#define PictStandardNUM	    5
+
+
+
+/* Copied from X11/extensions/renderproto.h */
+
+#include <X11/Xmd.h>
+
+#define Window CARD32
+#define Drawable CARD32
+#define Font CARD32
+#define Pixmap CARD32
+#define Cursor CARD32
+#define Colormap CARD32
+#define GContext CARD32
+#define Atom CARD32
+#define VisualID CARD32
+#define Time CARD32
+#define KeyCode CARD8
+#define KeySym CARD32
+
+#define Picture	    CARD32
+#define PictFormat  CARD32
+#define Fixed	    INT32
+#define Glyphset    CARD32
+#define Glyph	    CARD32
+
+/*
+ * data structures
+ */
+
+typedef struct {
+    CARD16  red B16;
+    CARD16  redMask B16;
+    CARD16  green B16;
+    CARD16  greenMask B16;
+    CARD16  blue B16;
+    CARD16  blueMask B16;
+    CARD16  alpha B16;
+    CARD16  alphaMask B16;
+} xDirectFormat;
+
+#define sz_xDirectFormat    16
+
+typedef struct {
+    PictFormat	id B32;
+    CARD8	type;
+    CARD8	depth;
+    CARD16	pad1 B16;
+    xDirectFormat   direct;
+    Colormap	colormap;
+} xPictFormInfo;
+
+#define sz_xPictFormInfo    28
+
+typedef struct {
+    VisualID	visual;
+    PictFormat	format;
+} xPictVisual;
+
+#define sz_xPictVisual	    8
+
+typedef struct {
+    CARD8	depth;
+    CARD8	pad1;
+    CARD16	nPictVisuals B16;
+    CARD32	pad2 B32;
+} xPictDepth;
+
+#define sz_xPictDepth	8
+
+typedef struct {
+    CARD32	nDepth B32;
+    PictFormat	fallback B32;
+} xPictScreen;
+
+#define sz_xPictScreen	8
+
+typedef struct {
+    CARD32	pixel B32;
+    CARD16	red B16;
+    CARD16	green B16;
+    CARD16	blue B16;
+    CARD16	alpha B16;
+} xIndexValue;
+
+#define sz_xIndexValue	12
+
+typedef struct {
+    CARD16	red B16;
+    CARD16	green B16;
+    CARD16	blue B16;
+    CARD16	alpha B16;
+} xRenderColor;
+
+#define sz_xRenderColor	8
+
+typedef struct {
+    Fixed	x B32;
+    Fixed	y B32;
+} xPointFixed;
+
+#define sz_xPointFixed	8
+
+typedef struct {
+    xPointFixed	p1;
+    xPointFixed p2;
+} xLineFixed;
+
+#define sz_xLineFixed	16
+
+typedef struct {
+    xPointFixed	p1, p2, p3;
+} xTriangle;
+
+#define sz_xTriangle	24
+
+typedef struct {
+    Fixed	top B32;
+    Fixed	bottom B32;
+    xLineFixed	left;
+    xLineFixed	right;
+} xTrapezoid;
+
+#define sz_xTrapezoid	40
+
+typedef struct {
+    CARD16  width B16;
+    CARD16  height B16;
+    INT16   x B16;
+    INT16   y B16;
+    INT16   xOff B16;
+    INT16   yOff B16;
+} xGlyphInfo;
+
+#define sz_xGlyphInfo	12
+
+typedef struct {
+    CARD8   len;
+    CARD8   pad1;
+    CARD16  pad2;
+    INT16   deltax;
+    INT16   deltay;
+} xGlyphElt;
+
+#define sz_xGlyphElt	8
+
+typedef struct {
+    Fixed   l, r, y;
+} xSpanFix;
+
+#define sz_xSpanFix	12
+
+typedef struct {
+    xSpanFix	top, bot;
+} xTrap;
+
+#define sz_xTrap	24
+
+/*
+ * requests and replies
+ */
+typedef struct {
+    CARD8   reqType;
+    CARD8   renderReqType;
+    CARD16  length B16;
+    CARD32  majorVersion B32;
+    CARD32  minorVersion B32;
+} xRenderQueryVersionReq;
+
+#define sz_xRenderQueryVersionReq   12
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    CARD32  majorVersion B32;
+    CARD32  minorVersion B32;
+    CARD32  pad2 B32;
+    CARD32  pad3 B32;
+    CARD32  pad4 B32;
+    CARD32  pad5 B32;
+} xRenderQueryVersionReply;
+
+#define sz_xRenderQueryVersionReply	32
+
+typedef struct {
+    CARD8   reqType;
+    CARD8   renderReqType;
+    CARD16  length B16;
+} xRenderQueryPictFormatsReq;
+
+#define sz_xRenderQueryPictFormatsReq	4
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    CARD32  numFormats B32;
+    CARD32  numScreens B32;
+    CARD32  numDepths B32;
+    CARD32  numVisuals B32;
+    CARD32  numSubpixel B32;	    /* Version 0.6 */
+    CARD32  pad5 B32;
+} xRenderQueryPictFormatsReply;
+
+#define sz_xRenderQueryPictFormatsReply	32
+
+typedef struct {
+    CARD8   reqType;
+    CARD8   renderReqType;
+    CARD16  length B16;
+    PictFormat	format B32;
+} xRenderQueryPictIndexValuesReq;
+
+#define sz_xRenderQueryPictIndexValuesReq   8
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    CARD32  numIndexValues;
+    CARD32  pad2 B32;
+    CARD32  pad3 B32;
+    CARD32  pad4 B32;
+    CARD32  pad5 B32;
+    CARD32  pad6 B32;
+} xRenderQueryPictIndexValuesReply;
+
+#define sz_xRenderQueryPictIndexValuesReply 32
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Picture	pid B32;
+    Drawable	drawable B32;
+    PictFormat	format B32;
+    CARD32	mask B32;
+} xRenderCreatePictureReq;
+
+#define sz_xRenderCreatePictureReq	    20
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Picture	picture B32;
+    CARD32	mask B32;
+} xRenderChangePictureReq;
+
+#define sz_xRenderChangePictureReq	    12
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Picture     picture B32;
+    INT16	xOrigin B16;
+    INT16	yOrigin B16;
+} xRenderSetPictureClipRectanglesReq;
+
+#define sz_xRenderSetPictureClipRectanglesReq	    12
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Picture     picture B32;
+} xRenderFreePictureReq;
+
+#define sz_xRenderFreePictureReq	    8
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	src B32;
+    Picture	mask B32;
+    Picture	dst B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+    INT16	xMask B16;
+    INT16	yMask B16;
+    INT16	xDst B16;
+    INT16	yDst B16;
+    CARD16	width B16;
+    CARD16	height B16;
+} xRenderCompositeReq;
+
+#define sz_xRenderCompositeReq		    36
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Picture	src B32;
+    Picture	dst B32;
+    CARD32	colorScale B32;
+    CARD32	alphaScale B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+    INT16	xDst B16;
+    INT16	yDst B16;
+    CARD16	width B16;
+    CARD16	height B16;
+} xRenderScaleReq;
+
+#define sz_xRenderScaleReq			    32
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	src B32;
+    Picture	dst B32;
+    PictFormat	maskFormat B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+} xRenderTrapezoidsReq;
+
+#define sz_xRenderTrapezoidsReq			    24
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	src B32;
+    Picture	dst B32;
+    PictFormat	maskFormat B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+} xRenderTrianglesReq;
+
+#define sz_xRenderTrianglesReq			    24
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	src B32;
+    Picture	dst B32;
+    PictFormat	maskFormat B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+} xRenderTriStripReq;
+
+#define sz_xRenderTriStripReq			    24
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	src B32;
+    Picture	dst B32;
+    PictFormat	maskFormat B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+} xRenderTriFanReq;
+
+#define sz_xRenderTriFanReq			    24
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Glyphset	gsid B32;
+    PictFormat	format B32;
+} xRenderCreateGlyphSetReq;
+
+#define sz_xRenderCreateGlyphSetReq		    12
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Glyphset    gsid B32;
+    Glyphset    existing B32;
+} xRenderReferenceGlyphSetReq;
+
+#define sz_xRenderReferenceGlyphSetReq		    24
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Glyphset    glyphset B32;
+} xRenderFreeGlyphSetReq;
+
+#define sz_xRenderFreeGlyphSetReq		    8
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Glyphset    glyphset B32;
+    CARD32	nglyphs;
+} xRenderAddGlyphsReq;
+
+#define sz_xRenderAddGlyphsReq			    12
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    Glyphset    glyphset B32;
+} xRenderFreeGlyphsReq;
+
+#define sz_xRenderFreeGlyphsReq			    8
+
+typedef struct {
+    CARD8       reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	src B32;
+    Picture	dst B32;
+    PictFormat	maskFormat B32;
+    Glyphset    glyphset B32;
+    INT16	xSrc B16;
+    INT16	ySrc B16;
+} xRenderCompositeGlyphsReq, xRenderCompositeGlyphs8Req,
+xRenderCompositeGlyphs16Req, xRenderCompositeGlyphs32Req;
+
+#define sz_xRenderCompositeGlyphs8Req		    28
+#define sz_xRenderCompositeGlyphs16Req		    28
+#define sz_xRenderCompositeGlyphs32Req		    28
+
+/* 0.1 and higher */
+
+typedef struct {
+    CARD8	reqType;
+    CARD8       renderReqType;
+    CARD16      length B16;
+    CARD8	op;
+    CARD8	pad1;
+    CARD16	pad2 B16;
+    Picture	dst B32;
+    xRenderColor    color;
+} xRenderFillRectanglesReq;
+
+#define sz_xRenderFillRectanglesReq		    20
+
+/* 0.5 and higher */
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Cursor	cid B32;
+    Picture	src B32;
+    CARD16	x B16;
+    CARD16	y B16;
+} xRenderCreateCursorReq;
+
+#define sz_xRenderCreateCursorReq		    16
+
+/* 0.6 and higher */
+
+/*
+ * This can't use an array because 32-bit values may be in bitfields
+ */
+typedef struct {
+    Fixed	matrix11 B32;
+    Fixed	matrix12 B32;
+    Fixed	matrix13 B32;
+    Fixed	matrix21 B32;
+    Fixed	matrix22 B32;
+    Fixed	matrix23 B32;
+    Fixed	matrix31 B32;
+    Fixed	matrix32 B32;
+    Fixed	matrix33 B32;
+} xRenderTransform;
+
+#define sz_xRenderTransform 36
+
+typedef struct {
+    CARD8		reqType;
+    CARD8		renderReqType;
+    CARD16		length B16;
+    Picture		picture B32;
+    xRenderTransform	transform;
+} xRenderSetPictureTransformReq;
+
+#define sz_xRenderSetPictureTransformReq	    44
+
+typedef struct {
+    CARD8		reqType;
+    CARD8		renderReqType;
+    CARD16		length B16;
+    Drawable		drawable B32;
+} xRenderQueryFiltersReq;
+
+#define sz_xRenderQueryFiltersReq		    8
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    CARD32  numAliases B32;	/* LISTofCARD16 */
+    CARD32  numFilters B32;	/* LISTofSTRING8 */
+    CARD32  pad2 B32;
+    CARD32  pad3 B32;
+    CARD32  pad4 B32;
+    CARD32  pad5 B32;
+} xRenderQueryFiltersReply;
+
+#define sz_xRenderQueryFiltersReply		    32
+
+typedef struct {
+    CARD8		reqType;
+    CARD8		renderReqType;
+    CARD16		length B16;
+    Picture		picture B32;
+    CARD16		nbytes B16; /* number of bytes in name */
+    CARD16		pad B16;
+} xRenderSetPictureFilterReq;
+
+#define sz_xRenderSetPictureFilterReq		    12
+
+/* 0.8 and higher */
+
+typedef struct {
+    Cursor		cursor B32;
+    CARD32		delay B32;
+} xAnimCursorElt;
+
+#define sz_xAnimCursorElt			    8
+
+typedef struct {
+    CARD8		reqType;
+    CARD8		renderReqType;
+    CARD16		length B16;
+    Cursor		cid B32;
+} xRenderCreateAnimCursorReq;
+
+#define sz_xRenderCreateAnimCursorReq		    8
+
+/* 0.9 and higher */
+
+typedef struct {
+    CARD8		reqType;
+    CARD8		renderReqType;
+    CARD16		length B16;
+    Picture		picture;
+    INT16		xOff B16;
+    INT16		yOff B16;
+} xRenderAddTrapsReq;
+
+#define sz_xRenderAddTrapsReq			    12
+
+/* 0.10 and higher */
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Picture	pid B32;
+    xRenderColor color;
+} xRenderCreateSolidFillReq;
+
+#define sz_xRenderCreateSolidFillReq                 16
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Picture	pid B32;
+    xPointFixed p1;
+    xPointFixed p2;
+    CARD32      nStops;
+} xRenderCreateLinearGradientReq;
+
+#define sz_xRenderCreateLinearGradientReq                 28
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Picture	pid B32;
+    xPointFixed inner;
+    xPointFixed outer;
+    Fixed       inner_radius;
+    Fixed       outer_radius;
+    CARD32      nStops;
+} xRenderCreateRadialGradientReq;
+
+#define sz_xRenderCreateRadialGradientReq                 36
+
+typedef struct {
+    CARD8	reqType;
+    CARD8	renderReqType;
+    CARD16	length B16;
+    Picture	pid B32;
+    xPointFixed center;
+    Fixed       angle; /* in degrees */
+    CARD32      nStops;
+} xRenderCreateConicalGradientReq;
+
+#define sz_xRenderCreateConicalGradientReq                 24
+
+#undef Window
+#undef Drawable
+#undef Font
+#undef Pixmap
+#undef Cursor
+#undef Colormap
+#undef GContext
+#undef Atom
+#undef VisualID
+#undef Time
+#undef KeyCode
+#undef KeySym
+
+#undef Picture
+#undef PictFormat
+#undef Fixed
+#undef Glyphset
+#undef Glyph
+
+
+#endif /* CAIRO_HAS_XLIB_XRENDER_SURFACE */
+
+#endif /* CAIRO_XLIB_XRENDER_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib-xrender.h b/libs/cairo-1.16.0/src/cairo-xlib-xrender.h
new file mode 100644
index 0000000..b34b057
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-xrender.h
@@ -0,0 +1,66 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_XLIB_XRENDER_H
+#define CAIRO_XLIB_XRENDER_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_XLIB_XRENDER_SURFACE
+
+#include <X11/Xlib.h>
+#include <X11/extensions/Xrender.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_xlib_surface_create_with_xrender_format (Display		 *dpy,
+                                               Drawable		  drawable,
+					       Screen		 *screen,
+                                               XRenderPictFormat *format,
+                                               int		  width,
+                                               int		  height);
+
+cairo_public XRenderPictFormat *
+cairo_xlib_surface_get_xrender_format (cairo_surface_t *surface);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_XLIB_XRENDER_SURFACE */
+# error Cairo was not compiled with support for the xlib XRender backend
+#endif /* CAIRO_HAS_XLIB_XRENDER_SURFACE */
+
+#endif /* CAIRO_XLIB_XRENDER_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xlib.h b/libs/cairo-1.16.0/src/cairo-xlib.h
new file mode 100644
index 0000000..ecf8d6c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib.h
@@ -0,0 +1,118 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_XLIB_H
+#define CAIRO_XLIB_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_XLIB_SURFACE
+
+#include <X11/Xlib.h>
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_surface_t *
+cairo_xlib_surface_create (Display     *dpy,
+			   Drawable	drawable,
+			   Visual      *visual,
+			   int		width,
+			   int		height);
+
+cairo_public cairo_surface_t *
+cairo_xlib_surface_create_for_bitmap (Display  *dpy,
+				      Pixmap	bitmap,
+				      Screen	*screen,
+				      int	width,
+				      int	height);
+
+cairo_public void
+cairo_xlib_surface_set_size (cairo_surface_t *surface,
+			     int              width,
+			     int              height);
+
+cairo_public void
+cairo_xlib_surface_set_drawable (cairo_surface_t *surface,
+				 Drawable	  drawable,
+				 int              width,
+				 int              height);
+
+cairo_public Display *
+cairo_xlib_surface_get_display (cairo_surface_t *surface);
+
+cairo_public Drawable
+cairo_xlib_surface_get_drawable (cairo_surface_t *surface);
+
+cairo_public Screen *
+cairo_xlib_surface_get_screen (cairo_surface_t *surface);
+
+cairo_public Visual *
+cairo_xlib_surface_get_visual (cairo_surface_t *surface);
+
+cairo_public int
+cairo_xlib_surface_get_depth (cairo_surface_t *surface);
+
+cairo_public int
+cairo_xlib_surface_get_width (cairo_surface_t *surface);
+
+cairo_public int
+cairo_xlib_surface_get_height (cairo_surface_t *surface);
+
+/* debug interface */
+
+cairo_public void
+cairo_xlib_device_debug_cap_xrender_version (cairo_device_t *device,
+					     int major_version,
+					     int minor_version);
+
+/*
+ * @precision: -1 implies automatically choose based on antialiasing mode,
+ *            any other value overrides and sets the corresponding PolyMode.
+ */
+cairo_public void
+cairo_xlib_device_debug_set_precision (cairo_device_t *device,
+				       int precision);
+
+cairo_public int
+cairo_xlib_device_debug_get_precision (cairo_device_t *device);
+
+CAIRO_END_DECLS
+
+#else  /* CAIRO_HAS_XLIB_SURFACE */
+# error Cairo was not compiled with support for the xlib backend
+#endif /* CAIRO_HAS_XLIB_SURFACE */
+
+#endif /* CAIRO_XLIB_H */
diff --git a/libs/cairo-1.16.0/src/cairo-xml-surface.c b/libs/cairo-1.16.0/src/cairo-xml-surface.c
new file mode 100644
index 0000000..35773a2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xml-surface.c
@@ -0,0 +1,1210 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributor(s):
+ *      Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+/* This surface is intended to produce a verbose, hierarchical, DAG XML file
+ * representing a single surface. It is intended to be used by debuggers,
+ * such as cairo-sphinx, or by application test-suites that want a log of
+ * operations.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-xml.h"
+
+#include "cairo-clip-private.h"
+#include "cairo-device-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-error-private.h"
+#include "cairo-output-stream-private.h"
+#include "cairo-recording-surface-inline.h"
+
+#define static cairo_warn static
+
+typedef struct _cairo_xml_surface cairo_xml_surface_t;
+
+typedef struct _cairo_xml {
+    cairo_device_t base;
+
+    cairo_output_stream_t *stream;
+    int indent;
+} cairo_xml_t;
+
+struct _cairo_xml_surface {
+    cairo_surface_t base;
+
+    double width, height;
+};
+
+slim_hidden_proto (cairo_xml_for_recording_surface);
+
+static const cairo_surface_backend_t _cairo_xml_surface_backend;
+
+static const char *
+_operator_to_string (cairo_operator_t op)
+{
+    static const char *names[] = {
+	"CLEAR",	/* CAIRO_OPERATOR_CLEAR */
+
+	"SOURCE",	/* CAIRO_OPERATOR_SOURCE */
+	"OVER",		/* CAIRO_OPERATOR_OVER */
+	"IN",		/* CAIRO_OPERATOR_IN */
+	"OUT",		/* CAIRO_OPERATOR_OUT */
+	"ATOP",		/* CAIRO_OPERATOR_ATOP */
+
+	"DEST",		/* CAIRO_OPERATOR_DEST */
+	"DEST_OVER",	/* CAIRO_OPERATOR_DEST_OVER */
+	"DEST_IN",	/* CAIRO_OPERATOR_DEST_IN */
+	"DEST_OUT",	/* CAIRO_OPERATOR_DEST_OUT */
+	"DEST_ATOP",	/* CAIRO_OPERATOR_DEST_ATOP */
+
+	"XOR",		/* CAIRO_OPERATOR_XOR */
+	"ADD",		/* CAIRO_OPERATOR_ADD */
+	"SATURATE",	/* CAIRO_OPERATOR_SATURATE */
+
+	"MULTIPLY",	/* CAIRO_OPERATOR_MULTIPLY */
+	"SCREEN",	/* CAIRO_OPERATOR_SCREEN */
+	"OVERLAY",	/* CAIRO_OPERATOR_OVERLAY */
+	"DARKEN",	/* CAIRO_OPERATOR_DARKEN */
+	"LIGHTEN",	/* CAIRO_OPERATOR_LIGHTEN */
+	"DODGE",	/* CAIRO_OPERATOR_COLOR_DODGE */
+	"BURN",		/* CAIRO_OPERATOR_COLOR_BURN */
+	"HARD_LIGHT",	/* CAIRO_OPERATOR_HARD_LIGHT */
+	"SOFT_LIGHT",	/* CAIRO_OPERATOR_SOFT_LIGHT */
+	"DIFFERENCE",	/* CAIRO_OPERATOR_DIFFERENCE */
+	"EXCLUSION",	/* CAIRO_OPERATOR_EXCLUSION */
+	"HSL_HUE",	/* CAIRO_OPERATOR_HSL_HUE */
+	"HSL_SATURATION", /* CAIRO_OPERATOR_HSL_SATURATION */
+	"HSL_COLOR",	/* CAIRO_OPERATOR_HSL_COLOR */
+	"HSL_LUMINOSITY" /* CAIRO_OPERATOR_HSL_LUMINOSITY */
+    };
+    assert (op < ARRAY_LENGTH (names));
+    return names[op];
+}
+
+static const char *
+_extend_to_string (cairo_extend_t extend)
+{
+    static const char *names[] = {
+	"EXTEND_NONE",		/* CAIRO_EXTEND_NONE */
+	"EXTEND_REPEAT",	/* CAIRO_EXTEND_REPEAT */
+	"EXTEND_REFLECT",	/* CAIRO_EXTEND_REFLECT */
+	"EXTEND_PAD"		/* CAIRO_EXTEND_PAD */
+    };
+    assert (extend < ARRAY_LENGTH (names));
+    return names[extend];
+}
+
+static const char *
+_filter_to_string (cairo_filter_t filter)
+{
+    static const char *names[] = {
+	"FILTER_FAST",		/* CAIRO_FILTER_FAST */
+	"FILTER_GOOD",		/* CAIRO_FILTER_GOOD */
+	"FILTER_BEST",		/* CAIRO_FILTER_BEST */
+	"FILTER_NEAREST",	/* CAIRO_FILTER_NEAREST */
+	"FILTER_BILINEAR",	/* CAIRO_FILTER_BILINEAR */
+	"FILTER_GAUSSIAN",	/* CAIRO_FILTER_GAUSSIAN */
+    };
+    assert (filter < ARRAY_LENGTH (names));
+    return names[filter];
+}
+
+static const char *
+_fill_rule_to_string (cairo_fill_rule_t rule)
+{
+    static const char *names[] = {
+	"WINDING",	/* CAIRO_FILL_RULE_WINDING */
+	"EVEN_ODD"	/* CAIRO_FILL_RILE_EVEN_ODD */
+    };
+    assert (rule < ARRAY_LENGTH (names));
+    return names[rule];
+}
+
+static const char *
+_antialias_to_string (cairo_antialias_t antialias)
+{
+    static const char *names[] = {
+	"DEFAULT",	/* CAIRO_ANTIALIAS_DEFAULT */
+	"NONE",         /* CAIRO_ANTIALIAS_NONE */
+	"GRAY",         /* CAIRO_ANTIALIAS_GRAY */
+	"SUBPIXEL",	/* CAIRO_ANTIALIAS_SUBPIXEL */
+	"FAST",         /* CAIRO_ANTIALIAS_FAST */
+	"GOOD",         /* CAIRO_ANTIALIAS_GOOD */
+	"BEST",         /* CAIRO_ANTIALIAS_BEST */
+    };
+    assert (antialias < ARRAY_LENGTH (names));
+    return names[antialias];
+}
+
+static const char *
+_line_cap_to_string (cairo_line_cap_t line_cap)
+{
+    static const char *names[] = {
+	"LINE_CAP_BUTT",	/* CAIRO_LINE_CAP_BUTT */
+	"LINE_CAP_ROUND",	/* CAIRO_LINE_CAP_ROUND */
+	"LINE_CAP_SQUARE"	/* CAIRO_LINE_CAP_SQUARE */
+    };
+    assert (line_cap < ARRAY_LENGTH (names));
+    return names[line_cap];
+}
+
+static const char *
+_line_join_to_string (cairo_line_join_t line_join)
+{
+    static const char *names[] = {
+	"LINE_JOIN_MITER",	/* CAIRO_LINE_JOIN_MITER */
+	"LINE_JOIN_ROUND",	/* CAIRO_LINE_JOIN_ROUND */
+	"LINE_JOIN_BEVEL",	/* CAIRO_LINE_JOIN_BEVEL */
+    };
+    assert (line_join < ARRAY_LENGTH (names));
+    return names[line_join];
+}
+
+static const char *
+_content_to_string (cairo_content_t content)
+{
+    switch (content) {
+    case CAIRO_CONTENT_ALPHA: return "ALPHA";
+    case CAIRO_CONTENT_COLOR: return "COLOR";
+    default:
+    case CAIRO_CONTENT_COLOR_ALPHA: return "COLOR_ALPHA";
+    }
+}
+
+static const char *
+_format_to_string (cairo_format_t format)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:  return "ARGB32";
+    case CAIRO_FORMAT_RGB30:   return "RGB30";
+    case CAIRO_FORMAT_RGB24:   return "RGB24";
+    case CAIRO_FORMAT_RGB16_565:   return "RGB16_565";
+    case CAIRO_FORMAT_A8:      return "A8";
+    case CAIRO_FORMAT_A1:      return "A1";
+    case CAIRO_FORMAT_INVALID: return "INVALID";
+    }
+    ASSERT_NOT_REACHED;
+    return "INVALID";
+}
+
+static cairo_status_t
+_device_flush (void *abstract_device)
+{
+    cairo_xml_t *xml = abstract_device;
+    cairo_status_t status;
+
+    status = _cairo_output_stream_flush (xml->stream);
+
+    return status;
+}
+
+static void
+_device_destroy (void *abstract_device)
+{
+    cairo_xml_t *xml = abstract_device;
+    cairo_status_t status;
+
+    status = _cairo_output_stream_destroy (xml->stream);
+
+    free (xml);
+}
+
+static const cairo_device_backend_t _cairo_xml_device_backend = {
+    CAIRO_DEVICE_TYPE_XML,
+
+    NULL, NULL, /* lock, unlock */
+
+    _device_flush,
+    NULL,  /* finish */
+    _device_destroy
+};
+
+static cairo_device_t *
+_cairo_xml_create_internal (cairo_output_stream_t *stream)
+{
+    cairo_xml_t *xml;
+
+    xml = _cairo_malloc (sizeof (cairo_xml_t));
+    if (unlikely (xml == NULL))
+	return _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    memset (xml, 0, sizeof (cairo_xml_t));
+
+    _cairo_device_init (&xml->base, &_cairo_xml_device_backend);
+
+    xml->indent = 0;
+    xml->stream = stream;
+
+    return &xml->base;
+}
+
+static void
+_cairo_xml_indent (cairo_xml_t *xml, int indent)
+{
+    xml->indent += indent;
+    assert (xml->indent >= 0);
+}
+
+static void CAIRO_PRINTF_FORMAT (2, 3)
+_cairo_xml_printf (cairo_xml_t *xml, const char *fmt, ...)
+{
+    va_list ap;
+    char indent[80];
+    int len;
+
+    len = MIN (xml->indent, ARRAY_LENGTH (indent));
+    memset (indent, ' ', len);
+    _cairo_output_stream_write (xml->stream, indent, len);
+
+    va_start (ap, fmt);
+    _cairo_output_stream_vprintf (xml->stream, fmt, ap);
+    va_end (ap);
+
+    _cairo_output_stream_write (xml->stream, "\n", 1);
+}
+
+static void CAIRO_PRINTF_FORMAT (2, 3)
+_cairo_xml_printf_start (cairo_xml_t *xml, const char *fmt, ...)
+{
+    char indent[80];
+    int len;
+
+    len = MIN (xml->indent, ARRAY_LENGTH (indent));
+    memset (indent, ' ', len);
+    _cairo_output_stream_write (xml->stream, indent, len);
+
+    if (fmt != NULL) {
+	va_list ap;
+
+	va_start (ap, fmt);
+	_cairo_output_stream_vprintf (xml->stream, fmt, ap);
+	va_end (ap);
+    }
+}
+
+static void CAIRO_PRINTF_FORMAT (2, 3)
+_cairo_xml_printf_continue (cairo_xml_t *xml, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start (ap, fmt);
+    _cairo_output_stream_vprintf (xml->stream, fmt, ap);
+    va_end (ap);
+}
+
+static void CAIRO_PRINTF_FORMAT (2, 3)
+_cairo_xml_printf_end (cairo_xml_t *xml, const char *fmt, ...)
+{
+    if (fmt != NULL) {
+	va_list ap;
+
+	va_start (ap, fmt);
+	_cairo_output_stream_vprintf (xml->stream, fmt, ap);
+	va_end (ap);
+    }
+
+    _cairo_output_stream_write (xml->stream, "\n", 1);
+}
+
+static cairo_surface_t *
+_cairo_xml_surface_create_similar (void			*abstract_surface,
+				   cairo_content_t	 content,
+				   int			 width,
+				   int			 height)
+{
+    cairo_rectangle_t extents;
+
+    extents.x = extents.y = 0;
+    extents.width  = width;
+    extents.height = height;
+
+    return cairo_recording_surface_create (content, &extents);
+}
+
+static cairo_bool_t
+_cairo_xml_surface_get_extents (void *abstract_surface,
+				cairo_rectangle_int_t *rectangle)
+{
+    cairo_xml_surface_t *surface = abstract_surface;
+
+    if (surface->width < 0 || surface->height < 0)
+	return FALSE;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+    rectangle->width  = surface->width;
+    rectangle->height = surface->height;
+
+    return TRUE;
+}
+
+static cairo_status_t
+_cairo_xml_move_to (void *closure,
+		    const cairo_point_t *p1)
+{
+    _cairo_xml_printf_continue (closure, " %f %f m",
+				_cairo_fixed_to_double (p1->x),
+				_cairo_fixed_to_double (p1->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_line_to (void *closure,
+		    const cairo_point_t *p1)
+{
+    _cairo_xml_printf_continue (closure, " %f %f l",
+				_cairo_fixed_to_double (p1->x),
+				_cairo_fixed_to_double (p1->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_curve_to (void *closure,
+		     const cairo_point_t *p1,
+		     const cairo_point_t *p2,
+		     const cairo_point_t *p3)
+{
+    _cairo_xml_printf_continue (closure, " %f %f %f %f %f %f c",
+				_cairo_fixed_to_double (p1->x),
+				_cairo_fixed_to_double (p1->y),
+				_cairo_fixed_to_double (p2->x),
+				_cairo_fixed_to_double (p2->y),
+				_cairo_fixed_to_double (p3->x),
+				_cairo_fixed_to_double (p3->y));
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_close_path (void *closure)
+{
+    _cairo_xml_printf_continue (closure, " h");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_xml_emit_path (cairo_xml_t *xml,
+		      const cairo_path_fixed_t *path)
+{
+    cairo_status_t status;
+
+    _cairo_xml_printf_start (xml, "<path>");
+    status = _cairo_path_fixed_interpret (path,
+					_cairo_xml_move_to,
+					_cairo_xml_line_to,
+					_cairo_xml_curve_to,
+					_cairo_xml_close_path,
+					xml);
+    assert (status == CAIRO_STATUS_SUCCESS);
+    _cairo_xml_printf_end (xml, "</path>");
+}
+
+static void
+_cairo_xml_emit_string (cairo_xml_t *xml,
+			const char *node,
+			const char *data)
+{
+    _cairo_xml_printf (xml, "<%s>%s</%s>", node, data, node);
+}
+
+static void
+_cairo_xml_emit_double (cairo_xml_t *xml,
+			const char *node,
+			double data)
+{
+    _cairo_xml_printf (xml, "<%s>%f</%s>", node, data, node);
+}
+
+static cairo_xml_t *
+to_xml (cairo_xml_surface_t *surface)
+{
+    return (cairo_xml_t *) surface->base.device;
+}
+
+static cairo_status_t
+_cairo_xml_surface_emit_clip_boxes (cairo_xml_surface_t *surface,
+				    const cairo_clip_t *clip)
+{
+    cairo_box_t *box;
+    cairo_xml_t *xml;
+    int n;
+
+    if (clip->num_boxes == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* skip the trivial clip covering the surface extents */
+    if (surface->width >= 0 && surface->height >= 0 && clip->num_boxes == 1) {
+	box = &clip->boxes[0];
+	if (box->p1.x <= 0 && box->p1.y <= 0 &&
+	    box->p2.x - box->p1.x >= _cairo_fixed_from_double (surface->width) &&
+	    box->p2.y - box->p1.y >= _cairo_fixed_from_double (surface->height))
+	{
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    xml = to_xml (surface);
+
+    _cairo_xml_printf (xml, "<clip>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_printf (xml, "<path>");
+    _cairo_xml_indent (xml, 2);
+    for (n = 0; n < clip->num_boxes; n++) {
+	box = &clip->boxes[n];
+
+	_cairo_xml_printf_start (xml, "%f %f m",
+				 _cairo_fixed_to_double (box->p1.x),
+				 _cairo_fixed_to_double (box->p1.y));
+	_cairo_xml_printf_continue (xml, " %f %f l",
+				    _cairo_fixed_to_double (box->p2.x),
+				    _cairo_fixed_to_double (box->p1.y));
+	_cairo_xml_printf_continue (xml, " %f %f l",
+				    _cairo_fixed_to_double (box->p2.x),
+				    _cairo_fixed_to_double (box->p2.y));
+	_cairo_xml_printf_continue (xml, " %f %f l",
+				    _cairo_fixed_to_double (box->p1.x),
+				    _cairo_fixed_to_double (box->p2.y));
+	_cairo_xml_printf_end (xml, " h");
+    }
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</path>");
+    _cairo_xml_emit_double (xml, "tolerance", 1.0);
+    _cairo_xml_emit_string (xml, "antialias",
+			    _antialias_to_string (CAIRO_ANTIALIAS_NONE));
+    _cairo_xml_emit_string (xml, "fill-rule",
+			    _fill_rule_to_string (CAIRO_FILL_RULE_WINDING));
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</clip>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_surface_emit_clip_path (cairo_xml_surface_t *surface,
+				   const cairo_clip_path_t *clip_path)
+{
+    cairo_box_t box;
+    cairo_status_t status;
+    cairo_xml_t *xml;
+
+    if (clip_path == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_xml_surface_emit_clip_path (surface, clip_path->prev);
+    if (unlikely (status))
+	return status;
+
+    /* skip the trivial clip covering the surface extents */
+    if (surface->width >= 0 && surface->height >= 0 &&
+	_cairo_path_fixed_is_box (&clip_path->path, &box))
+    {
+	if (box.p1.x <= 0 && box.p1.y <= 0 &&
+	    box.p2.x - box.p1.x >= _cairo_fixed_from_double (surface->width) &&
+	    box.p2.y - box.p1.y >= _cairo_fixed_from_double (surface->height))
+	{
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    xml = to_xml (surface);
+
+    _cairo_xml_printf_start (xml, "<clip>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_emit_path (xml, &clip_path->path);
+    _cairo_xml_emit_double (xml, "tolerance", clip_path->tolerance);
+    _cairo_xml_emit_string (xml, "antialias",
+			    _antialias_to_string (clip_path->antialias));
+    _cairo_xml_emit_string (xml, "fill-rule",
+			    _fill_rule_to_string (clip_path->fill_rule));
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf_end (xml, "</clip>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_surface_emit_clip (cairo_xml_surface_t *surface,
+			      const cairo_clip_t *clip)
+{
+    cairo_status_t status;
+
+    if (clip == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = _cairo_xml_surface_emit_clip_boxes (surface, clip);
+    if (unlikely (status))
+	return status;
+
+    return _cairo_xml_surface_emit_clip_path (surface, clip->path);
+}
+
+static cairo_status_t
+_cairo_xml_emit_solid (cairo_xml_t *xml,
+		       const cairo_solid_pattern_t *solid)
+{
+    _cairo_xml_printf (xml, "<solid>%f %f %f %f</solid>",
+		       solid->color.red,
+		       solid->color.green,
+		       solid->color.blue,
+		       solid->color.alpha);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_xml_emit_matrix (cairo_xml_t *xml,
+			const cairo_matrix_t *matrix)
+{
+    if (! _cairo_matrix_is_identity (matrix)) {
+	_cairo_xml_printf (xml, "<matrix>%f %f %f %f %f %f</matrix>",
+			   matrix->xx, matrix->yx,
+			   matrix->xy, matrix->yy,
+			   matrix->x0, matrix->y0);
+    }
+}
+
+static void
+_cairo_xml_emit_gradient (cairo_xml_t *xml,
+			  const cairo_gradient_pattern_t *gradient)
+{
+    unsigned int i;
+
+    for (i = 0; i < gradient->n_stops; i++) {
+	_cairo_xml_printf (xml,
+			   "<color-stop>%f %f %f %f %f</color-stop>",
+			   gradient->stops[i].offset,
+			   gradient->stops[i].color.red,
+			   gradient->stops[i].color.green,
+			   gradient->stops[i].color.blue,
+			   gradient->stops[i].color.alpha);
+    }
+}
+
+static cairo_status_t
+_cairo_xml_emit_linear (cairo_xml_t *xml,
+			const cairo_linear_pattern_t *linear)
+{
+    _cairo_xml_printf (xml,
+		       "<linear x1='%f' y1='%f' x2='%f' y2='%f'>",
+		       linear->pd1.x, linear->pd1.y,
+		       linear->pd2.x, linear->pd2.y);
+    _cairo_xml_indent (xml, 2);
+    _cairo_xml_emit_gradient (xml, &linear->base);
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</linear>");
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_emit_radial (cairo_xml_t *xml,
+			const cairo_radial_pattern_t *radial)
+{
+    _cairo_xml_printf (xml,
+		       "<radial x1='%f' y1='%f' r1='%f' x2='%f' y2='%f' r2='%f'>",
+		       radial->cd1.center.x, radial->cd1.center.y, radial->cd1.radius,
+		       radial->cd2.center.x, radial->cd2.center.y, radial->cd2.radius);
+    _cairo_xml_indent (xml, 2);
+    _cairo_xml_emit_gradient (xml, &radial->base);
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</radial>");
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_write_func (void *closure, const unsigned char *data, unsigned len)
+{
+    _cairo_output_stream_write (closure, data, len);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_emit_image (cairo_xml_t *xml,
+		       cairo_image_surface_t *image)
+{
+    cairo_output_stream_t *stream;
+    cairo_status_t status;
+
+    _cairo_xml_printf_start (xml,
+			     "<image width='%d' height='%d' format='%s'>",
+			     image->width, image->height,
+			     _format_to_string (image->format));
+
+    stream = _cairo_base64_stream_create (xml->stream);
+    status = cairo_surface_write_to_png_stream (&image->base,
+						_write_func, stream);
+    assert (status == CAIRO_STATUS_SUCCESS);
+    status = _cairo_output_stream_destroy (stream);
+    if (unlikely (status))
+	return status;
+
+    _cairo_xml_printf_end (xml, "</image>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_emit_surface (cairo_xml_t *xml,
+			 const cairo_surface_pattern_t *pattern)
+{
+    cairo_surface_t *source = pattern->surface;
+    cairo_status_t status;
+
+    if (_cairo_surface_is_recording (source)) {
+	status = cairo_xml_for_recording_surface (&xml->base, source);
+    } else {
+	cairo_image_surface_t *image;
+	void *image_extra;
+
+	status = _cairo_surface_acquire_source_image (source,
+						      &image, &image_extra);
+	if (unlikely (status))
+	    return status;
+
+	status = _cairo_xml_emit_image (xml, image);
+
+	_cairo_surface_release_source_image (source, image, image_extra);
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_xml_emit_pattern (cairo_xml_t *xml,
+			 const char *source_or_mask,
+			 const cairo_pattern_t *pattern)
+{
+    cairo_status_t status;
+
+    _cairo_xml_printf (xml, "<%s-pattern>", source_or_mask);
+    _cairo_xml_indent (xml, 2);
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	status = _cairo_xml_emit_solid (xml, (cairo_solid_pattern_t *) pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	status = _cairo_xml_emit_linear (xml, (cairo_linear_pattern_t *) pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	status = _cairo_xml_emit_radial (xml, (cairo_radial_pattern_t *) pattern);
+	break;
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	status = _cairo_xml_emit_surface (xml, (cairo_surface_pattern_t *) pattern);
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	break;
+    }
+
+    if (pattern->type != CAIRO_PATTERN_TYPE_SOLID) {
+	_cairo_xml_emit_matrix (xml, &pattern->matrix);
+	_cairo_xml_printf (xml,
+			   "<extend>%s</extend>",
+			   _extend_to_string (pattern->extend));
+	_cairo_xml_printf (xml,
+			   "<filter>%s</filter>",
+			   _filter_to_string (pattern->filter));
+    }
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</%s-pattern>", source_or_mask);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_xml_surface_paint (void			*abstract_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  const cairo_clip_t	*clip)
+{
+    cairo_xml_surface_t *surface = abstract_surface;
+    cairo_xml_t *xml = to_xml (surface);
+    cairo_status_t status;
+
+    _cairo_xml_printf (xml, "<paint>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
+
+    status = _cairo_xml_surface_emit_clip (surface, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_pattern (xml, "source", source);
+    if (unlikely (status))
+	return status;
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</paint>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_xml_surface_mask (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_pattern_t	*mask,
+			 const cairo_clip_t	*clip)
+{
+    cairo_xml_surface_t *surface = abstract_surface;
+    cairo_xml_t *xml = to_xml (surface);
+    cairo_status_t status;
+
+    _cairo_xml_printf (xml, "<mask>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
+
+    status = _cairo_xml_surface_emit_clip (surface, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_pattern (xml, "source", source);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_pattern (xml, "mask", mask);
+    if (unlikely (status))
+	return status;
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</mask>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_xml_surface_stroke (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   const cairo_path_fixed_t		*path,
+			   const cairo_stroke_style_t		*style,
+			   const cairo_matrix_t		*ctm,
+			   const cairo_matrix_t		*ctm_inverse,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   const cairo_clip_t		*clip)
+{
+    cairo_xml_surface_t *surface = abstract_surface;
+    cairo_xml_t *xml = to_xml (surface);
+    cairo_status_t status;
+
+    _cairo_xml_printf (xml, "<stroke>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
+    _cairo_xml_emit_double (xml, "line-width", style->line_width);
+    _cairo_xml_emit_double (xml, "miter-limit", style->miter_limit);
+    _cairo_xml_emit_string (xml, "line-cap", _line_cap_to_string (style->line_cap));
+    _cairo_xml_emit_string (xml, "line-join", _line_join_to_string (style->line_join));
+
+    status = _cairo_xml_surface_emit_clip (surface, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_pattern (xml, "source", source);
+    if (unlikely (status))
+	return status;
+
+    if (style->num_dashes) {
+	unsigned int i;
+
+	_cairo_xml_printf_start (xml, "<dash offset='%f'>",
+				 style->dash_offset);
+	for (i = 0; i < style->num_dashes; i++)
+	    _cairo_xml_printf_continue (xml, "%f ", style->dash[i]);
+
+	_cairo_xml_printf_end (xml, "</dash>");
+    }
+
+    _cairo_xml_emit_path (xml, path);
+    _cairo_xml_emit_double (xml, "tolerance", tolerance);
+    _cairo_xml_emit_string (xml, "antialias", _antialias_to_string (antialias));
+
+    _cairo_xml_emit_matrix (xml, ctm);
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</stroke>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_xml_surface_fill (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_path_fixed_t*path,
+			 cairo_fill_rule_t	 fill_rule,
+			 double			 tolerance,
+			 cairo_antialias_t	 antialias,
+			 const cairo_clip_t	*clip)
+{
+    cairo_xml_surface_t *surface = abstract_surface;
+    cairo_xml_t *xml = to_xml (surface);
+    cairo_status_t status;
+
+    _cairo_xml_printf (xml, "<fill>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
+
+    status = _cairo_xml_surface_emit_clip (surface, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_pattern (xml, "source", source);
+    if (unlikely (status))
+	return status;
+
+    _cairo_xml_emit_path (xml, path);
+    _cairo_xml_emit_double (xml, "tolerance", tolerance);
+    _cairo_xml_emit_string (xml, "antialias", _antialias_to_string (antialias));
+    _cairo_xml_emit_string (xml, "fill-rule", _fill_rule_to_string (fill_rule));
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</fill>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+#if CAIRO_HAS_FT_FONT
+#include "cairo-ft-private.h"
+static cairo_status_t
+_cairo_xml_emit_type42_font (cairo_xml_t *xml,
+			     cairo_scaled_font_t *scaled_font)
+{
+    const cairo_scaled_font_backend_t *backend;
+    cairo_output_stream_t *base64_stream;
+    cairo_output_stream_t *zlib_stream;
+    cairo_status_t status, status2;
+    unsigned long size;
+    uint32_t len;
+    uint8_t *buf;
+
+    backend = scaled_font->backend;
+    if (backend->load_truetype_table == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    size = 0;
+    status = backend->load_truetype_table (scaled_font, 0, 0, NULL, &size);
+    if (unlikely (status))
+	return status;
+
+    buf = _cairo_malloc (size);
+    if (unlikely (buf == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = backend->load_truetype_table (scaled_font, 0, 0, buf, &size);
+    if (unlikely (status)) {
+	free (buf);
+	return status;
+    }
+
+    _cairo_xml_printf_start (xml, "<font type='42' flags='%d' index='0'>",
+		       _cairo_ft_scaled_font_get_load_flags (scaled_font));
+
+
+    base64_stream = _cairo_base64_stream_create (xml->stream);
+    len = size;
+    _cairo_output_stream_write (base64_stream, &len, sizeof (len));
+
+    zlib_stream = _cairo_deflate_stream_create (base64_stream);
+
+    _cairo_output_stream_write (zlib_stream, buf, size);
+    free (buf);
+
+    status2 = _cairo_output_stream_destroy (zlib_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    status2 = _cairo_output_stream_destroy (base64_stream);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    _cairo_xml_printf_end (xml, "</font>");
+
+    return status;
+}
+#else
+static cairo_status_t
+_cairo_xml_emit_type42_font (cairo_xml_t *xml,
+			     cairo_scaled_font_t *scaled_font)
+{
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+#endif
+
+static cairo_status_t
+_cairo_xml_emit_type3_font (cairo_xml_t *xml,
+			    cairo_scaled_font_t *scaled_font,
+			    cairo_glyph_t *glyphs,
+			    int num_glyphs)
+{
+    _cairo_xml_printf_start (xml, "<font type='3'>");
+    _cairo_xml_printf_end (xml, "</font>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_xml_emit_scaled_font (cairo_xml_t *xml,
+			     cairo_scaled_font_t *scaled_font,
+			     cairo_glyph_t *glyphs,
+			     int num_glyphs)
+{
+    cairo_int_status_t status;
+
+    _cairo_xml_printf (xml, "<scaled-font>");
+    _cairo_xml_indent (xml, 2);
+
+    status = _cairo_xml_emit_type42_font (xml, scaled_font);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	status = _cairo_xml_emit_type3_font (xml, scaled_font,
+					     glyphs, num_glyphs);
+    }
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "<scaled-font>");
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_xml_surface_glyphs (void			    *abstract_surface,
+			   cairo_operator_t	     op,
+			   const cairo_pattern_t    *source,
+			   cairo_glyph_t	    *glyphs,
+			   int			     num_glyphs,
+			   cairo_scaled_font_t	    *scaled_font,
+			   const cairo_clip_t       *clip)
+{
+    cairo_xml_surface_t *surface = abstract_surface;
+    cairo_xml_t *xml = to_xml (surface);
+    cairo_status_t status;
+    int i;
+
+    _cairo_xml_printf (xml, "<glyphs>");
+    _cairo_xml_indent (xml, 2);
+
+    _cairo_xml_emit_string (xml, "operator", _operator_to_string (op));
+
+    status = _cairo_xml_surface_emit_clip (surface, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_pattern (xml, "source", source);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_xml_emit_scaled_font (xml, scaled_font, glyphs, num_glyphs);
+    if (unlikely (status))
+	return status;
+
+    for (i = 0; i < num_glyphs; i++) {
+	_cairo_xml_printf (xml, "<glyph index='%lu'>%f %f</glyph>",
+			   glyphs[i].index,
+			   glyphs[i].x,
+			   glyphs[i].y);
+    }
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</glyphs>");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t
+_cairo_xml_surface_backend = {
+    CAIRO_SURFACE_TYPE_XML,
+    NULL,
+
+    _cairo_default_context_create,
+
+    _cairo_xml_surface_create_similar,
+    NULL, /* create_similar_image */
+    NULL, /* map_to_image */
+    NULL, /* unmap_image */
+
+    _cairo_surface_default_source,
+    NULL, /* acquire source image */
+    NULL, /* release source image */
+    NULL, /* snapshot */
+
+    NULL, /* copy page */
+    NULL, /* show page */
+
+    _cairo_xml_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_xml_surface_paint,
+    _cairo_xml_surface_mask,
+    _cairo_xml_surface_stroke,
+    _cairo_xml_surface_fill,
+    NULL, /* fill_stroke */
+    _cairo_xml_surface_glyphs,
+};
+
+static cairo_surface_t *
+_cairo_xml_surface_create_internal (cairo_device_t *device,
+				    cairo_content_t content,
+				    double width,
+				    double height)
+{
+    cairo_xml_surface_t *surface;
+
+    surface = _cairo_malloc (sizeof (cairo_xml_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &_cairo_xml_surface_backend,
+			 device,
+			 content,
+			 TRUE); /* is_vector */
+
+    surface->width = width;
+    surface->height = height;
+
+    return &surface->base;
+}
+
+cairo_device_t *
+cairo_xml_create (const char *filename)
+{
+    cairo_output_stream_t *stream;
+    cairo_status_t status;
+
+    stream = _cairo_output_stream_create_for_filename (filename);
+    if ((status = _cairo_output_stream_get_status (stream)))
+	return _cairo_device_create_in_error (status);
+
+    return _cairo_xml_create_internal (stream);
+}
+
+cairo_device_t *
+cairo_xml_create_for_stream (cairo_write_func_t	 write_func,
+			     void		*closure)
+{
+    cairo_output_stream_t *stream;
+    cairo_status_t status;
+
+    stream = _cairo_output_stream_create (write_func, NULL, closure);
+    if ((status = _cairo_output_stream_get_status (stream)))
+	return _cairo_device_create_in_error (status);
+
+    return _cairo_xml_create_internal (stream);
+}
+
+cairo_surface_t *
+cairo_xml_surface_create (cairo_device_t *device,
+			  cairo_content_t content,
+			  double width, double height)
+{
+    if (unlikely (device->backend->type != CAIRO_DEVICE_TYPE_XML))
+	return _cairo_surface_create_in_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+
+    if (unlikely (device->status))
+	return _cairo_surface_create_in_error (device->status);
+
+    return _cairo_xml_surface_create_internal (device, content, width, height);
+}
+
+cairo_status_t
+cairo_xml_for_recording_surface (cairo_device_t	 *device,
+				 cairo_surface_t *recording_surface)
+{
+    cairo_box_t bbox;
+    cairo_rectangle_int_t extents;
+    cairo_surface_t *surface;
+    cairo_xml_t *xml;
+    cairo_status_t status;
+
+    if (unlikely (device->status))
+	return device->status;
+
+    if (unlikely (recording_surface->status))
+	return recording_surface->status;
+
+    if (unlikely (device->backend->type != CAIRO_DEVICE_TYPE_XML))
+	return _cairo_error (CAIRO_STATUS_DEVICE_TYPE_MISMATCH);
+
+    if (unlikely (! _cairo_surface_is_recording (recording_surface)))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+
+    status = _cairo_recording_surface_get_bbox ((cairo_recording_surface_t *) recording_surface,
+						&bbox, NULL);
+    if (unlikely (status))
+	return status;
+
+    _cairo_box_round_to_rectangle (&bbox, &extents);
+    surface = _cairo_xml_surface_create_internal (device,
+						  recording_surface->content,
+						  extents.width,
+						  extents.height);
+    if (unlikely (surface->status))
+	return surface->status;
+
+    xml = (cairo_xml_t *) device;
+
+    _cairo_xml_printf (xml,
+		       "<surface content='%s' width='%d' height='%d'>",
+		       _content_to_string (recording_surface->content),
+		       extents.width, extents.height);
+    _cairo_xml_indent (xml, 2);
+
+    cairo_surface_set_device_offset (surface, -extents.x, -extents.y);
+    status = _cairo_recording_surface_replay (recording_surface, surface);
+    cairo_surface_destroy (surface);
+
+    _cairo_xml_indent (xml, -2);
+    _cairo_xml_printf (xml, "</surface>");
+
+    return status;
+}
+slim_hidden_def (cairo_xml_for_recording_surface);
diff --git a/libs/cairo-1.16.0/src/cairo-xml.h b/libs/cairo-1.16.0/src/cairo-xml.h
new file mode 100644
index 0000000..9ae76e9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xml.h
@@ -0,0 +1,67 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_XML_H
+#define CAIRO_XML_H
+
+#include "cairo.h"
+
+#if CAIRO_HAS_XML_SURFACE
+
+CAIRO_BEGIN_DECLS
+
+cairo_public cairo_device_t *
+cairo_xml_create (const char *filename);
+
+cairo_public cairo_device_t *
+cairo_xml_create_for_stream (cairo_write_func_t	 write_func,
+			     void		*closure);
+
+cairo_public cairo_surface_t *
+cairo_xml_surface_create (cairo_device_t *xml,
+			  cairo_content_t content,
+			  double width, double height);
+
+cairo_public cairo_status_t
+cairo_xml_for_recording_surface (cairo_device_t *xml,
+				 cairo_surface_t *surface);
+
+CAIRO_END_DECLS
+
+#else  /*CAIRO_HAS_XML_SURFACE*/
+# error Cairo was not compiled with support for the XML backend
+#endif /*CAIRO_HAS_XML_SURFACE*/
+
+#endif /*CAIRO_XML_H*/
diff --git a/libs/cairo-1.16.0/src/cairo.c b/libs/cairo-1.16.0/src/cairo.c
new file mode 100644
index 0000000..ca0c91e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo.c
@@ -0,0 +1,4342 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+#include "cairo-private.h"
+
+#include "cairo-backend-private.h"
+#include "cairo-error-private.h"
+#include "cairo-path-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+#include <assert.h>
+
+/**
+ * SECTION:cairo
+ * @Title: cairo_t
+ * @Short_Description: The cairo drawing context
+ * @See_Also: #cairo_surface_t
+ *
+ * #cairo_t is the main object used when drawing with cairo. To
+ * draw with cairo, you create a #cairo_t, set the target surface,
+ * and drawing options for the #cairo_t, create shapes with
+ * functions like cairo_move_to() and cairo_line_to(), and then
+ * draw shapes with cairo_stroke() or cairo_fill().
+ *
+ * #cairo_t<!-- -->'s can be pushed to a stack via cairo_save().
+ * They may then safely be changed, without losing the current state.
+ * Use cairo_restore() to restore to the saved state.
+ **/
+
+/**
+ * SECTION:cairo-text
+ * @Title: text
+ * @Short_Description: Rendering text and glyphs
+ * @See_Also: #cairo_font_face_t, #cairo_scaled_font_t, cairo_text_path(),
+ *            cairo_glyph_path()
+ *
+ * The functions with <emphasis>text</emphasis> in their name form cairo's
+ * <firstterm>toy</firstterm> text API.  The toy API takes UTF-8 encoded
+ * text and is limited in its functionality to rendering simple
+ * left-to-right text with no advanced features.  That means for example
+ * that most complex scripts like Hebrew, Arabic, and Indic scripts are
+ * out of question.  No kerning or correct positioning of diacritical marks
+ * either.  The font selection is pretty limited too and doesn't handle the
+ * case that the selected font does not cover the characters in the text.
+ * This set of functions are really that, a toy text API, for testing and
+ * demonstration purposes.  Any serious application should avoid them.
+ *
+ * The functions with <emphasis>glyphs</emphasis> in their name form cairo's
+ * <firstterm>low-level</firstterm> text API.  The low-level API relies on
+ * the user to convert text to a set of glyph indexes and positions.  This
+ * is a very hard problem and is best handled by external libraries, like
+ * the pangocairo that is part of the Pango text layout and rendering library.
+ * Pango is available from <ulink
+ * url="http://www.pango.org/">http://www.pango.org/</ulink>.
+ **/
+
+/**
+ * SECTION:cairo-transforms
+ * @Title: Transformations
+ * @Short_Description: Manipulating the current transformation matrix
+ * @See_Also: #cairo_matrix_t
+ *
+ * The current transformation matrix, <firstterm>ctm</firstterm>, is a
+ * two-dimensional affine transformation that maps all coordinates and other
+ * drawing instruments from the <firstterm>user space</firstterm> into the
+ * surface's canonical coordinate system, also known as the <firstterm>device
+ * space</firstterm>.
+ **/
+
+/**
+ * SECTION:cairo-tag
+ * @Title: Tags and Links
+ * @Short_Description: Hyperlinks and document structure
+ * @See_Also: #cairo_pdf_surface_t
+ *
+ * The tag functions provide the ability to specify hyperlinks and
+ * document logical structure on supported backends. The following tags are supported:
+ * * [Link][link] - Create a hyperlink
+ * * [Destinations][dest] - Create a hyperlink destination
+ * * [Document Structure Tags][doc-struct] - Create PDF Document Structure
+ *
+ * # Link Tags # {#link}
+ * A hyperlink is specified by enclosing the hyperlink text with the %CAIRO_TAG_LINK tag.
+ *
+ * For example:
+ * <informalexample><programlisting>
+ * cairo_tag_begin (cr, CAIRO_TAG_LINK, "uri='https://cairographics.org'");
+ * cairo_move_to (cr, 50, 50);
+ * cairo_show_text (cr, "This is a link to the cairo website.");
+ * cairo_tag_end (cr, CAIRO_TAG_LINK);
+ * </programlisting></informalexample>
+ *
+ * The PDF backend uses one or more rectangles to define the clickable
+ * area of the link.  By default cairo will use the extents of the
+ * drawing operations enclosed by the begin/end link tags to define the
+ * clickable area. In some cases, such as a link split across two
+ * lines, the default rectangle is undesirable.
+ *
+ * @rect: [optional] The "rect" attribute allows the application to
+ * specify one or more rectangles that form the clickable region.  The
+ * value of this attribute is an array of floats. Each rectangle is
+ * specified by four elements in the array: x, y, width, height. The
+ * array size must be a multiple of four.
+ *
+ * An example of creating a link with user specified clickable region:
+ * <informalexample><programlisting>
+ * cairo_font_extents_t font_extents;
+ * cairo_text_extents_t text1_extents;
+ * cairo_text_extents_t text2_extents;
+ * char attribs[100];
+ * const char *text1 = "This link is split";
+ * const char *text2 = "across two lines";
+ *
+ * cairo_font_extents (cr, &font_extents);
+ * cairo_move_to (cr, 450, 50);
+ * cairo_text_extents (cr, text1, &text1_extents);
+ * cairo_move_to (cr, 50, 70);
+ * cairo_text_extents (cr, text2, &text2_extents);
+ * sprintf (attribs,
+ *          "rect=[%f %f %f %f %f %f %f %f] uri='https://cairographics.org'",
+ *          text1_extents.x_bearing,
+ *          text1_extents.y_bearing,
+ *          text1_extents.width,
+ *          text1_extents.height,
+ *          text2_extents.x_bearing,
+ *          text2_extents.y_bearing,
+ *          text2_extents.width,
+ *          text2_extents.height);
+ *
+ * cairo_tag_begin (cr, CAIRO_TAG_LINK, attribs);
+ * cairo_show_text (cr, "This is a link to the cairo website");
+ * cairo_move_to (cr, 450, 50);
+ * cairo_show_text (cr, text1);
+ * cairo_move_to (cr, 50, 70);
+ * cairo_show_text (cr, text2);
+ * cairo_tag_end (cr, CAIRO_TAG_LINK);
+ * </programlisting></informalexample>
+ *
+ * There are three types of links. Each type has its own attributes as detailed below.
+ * * [Internal Links][internal-link] - A link to a location in the same document
+ * * [URI Links][uri-link] - A link to a Uniform resource identifier
+ * * [File Links][file-link] - A link to a location in another document
+ *
+ * ## Internal Links ## {#internal-link}
+ * An internal link is a link to a location in the same document. The destination
+ * is specified with either:
+ *
+ * @dest: a UTF-8 string specifying the destination in the PDF file to link
+ * to. Destinations are created with the %CAIRO_TAG_DEST tag.
+ *
+ * or the two attributes:
+ *
+ * @page: An integer specifying the page number in the PDF file to link to.
+ *
+ * @pos: [optional] An array of two floats specifying the x,y position
+ * on the page.
+ *
+ * An example of the link attributes to link to a page and x,y position:
+ * <programlisting>
+ * "page=3 pos=[3.1 6.2]"
+ * </programlisting>
+ *
+ * ## URI Links ## {#uri-link}
+ * A URI link is a link to a Uniform Resource Identifier ([RFC 2396](http://tools.ietf.org/html/rfc2396)).
+ *
+ * A URI is specified with the following attribute:
+ *
+ * @uri: An ASCII string specifying the URI.
+ *
+ * An example of the link attributes to the cairo website:
+ * <programlisting>
+ * "uri='https://cairographics.org'"
+ * </programlisting>
+ *
+ * ## File Links ## {#file-link}
+ * A file link is a link a location in another PDF file.
+ *
+ * The file attribute (required) specifies the name of the PDF file:
+ *
+ * @file: File name of PDF file to link to.
+ *
+ * The position is specified by either:
+ *
+ *  @dest: a UTF-8 string specifying the named destination in the PDF file.
+ *
+ * or
+ *
+ *  @page: An integer specifying the page number in the PDF file.
+ *
+ *  @pos: [optional] An array of two floats specifying the x,y
+ *  position on the page. Position coordinates in external files are in PDF
+ *  coordinates (0,0 at bottom left).
+ *
+ * An example of the link attributes to PDF file:
+ * <programlisting>
+ * "file='document.pdf' page=16 pos=[25 40]"
+ * </programlisting>
+ *
+ * # Destination Tags # {#dest}
+ *
+ * A destination is specified by enclosing the destination drawing
+ * operations with the %CAIRO_TAG_DEST tag.
+ *
+ * @name: [required] A UTF-8 string specifying the name of this destination.
+ *
+ * @x: [optional] A float specifying the x coordinate of destination
+ *                 position on this page. If not specified the default
+ *                 x coordinate is the left side of the extents of the
+ *                 operations enclosed by the %CAIRO_TAG_DEST begin/end tags. If
+ *                 no operations are enclosed, the x coordidate is 0.
+ *
+ * @y: [optional] A float specifying the y coordinate of destination
+ *                 position on this page. If not specified the default
+ *                 y coordinate is the top of the extents of the
+ *                 operations enclosed by the %CAIRO_TAG_DEST begin/end tags. If
+ *                 no operations are enclosed, the y coordidate is 0.
+ *
+ * @internal: A boolean that if true, the destination name may be
+ *            omitted from PDF where possible. In this case, links
+ *            refer directly to the page and position instead of via
+ *            the named destination table. Note that if this
+ *            destination is referenced by another PDF (see [File Links][file-link]),
+ *            this attribute must be false. Default is false.
+ *
+ * <informalexample><programlisting>
+ * /&ast; Create a hyperlink &ast;/
+ * cairo_tag_begin (cr, CAIRO_TAG_LINK, "dest='mydest' internal");
+ * cairo_move_to (cr, 50, 50);
+ * cairo_show_text (cr, "This is a hyperlink.");
+ * cairo_tag_end (cr, CAIRO_TAG_LINK);
+ *
+ * /&ast; Create a destination &ast;/
+ * cairo_tag_begin (cr, CAIRO_TAG_DEST, "name='mydest'");
+ * cairo_move_to (cr, 50, 250);
+ * cairo_show_text (cr, "This paragraph is the destination of the above link.");
+ * cairo_tag_end (cr, CAIRO_TAG_DEST);
+ * </programlisting></informalexample>
+ *
+ * # Document Structure (PDF) # {#doc-struct}
+ *
+ * The document structure tags provide a means of specifying structural information
+ * such as headers, paragraphs, tables, and figures. The inclusion of structural information facilitates:
+ * * Extraction of text and graphics for copy and paste
+ * * Reflow of text and graphics in the viewer
+ * * Processing text eg searching and indexing
+ * * Conversion to other formats
+ * * Accessability support
+ *
+ * The list of structure types is specified in section 14.8.4 of the
+ * [PDF Reference](http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PDF32000_2008.pdf).
+ *
+ * Note the PDF "Link" structure tag is the same as the cairo %CAIRO_TAG_LINK tag.
+ *
+ * The following example creates a document structure for a document containing two section, each with
+ * a header and a paragraph.
+ *
+ * <informalexample><programlisting>
+ * cairo_tag_begin (cr, "Document", NULL);
+ *
+ * cairo_tag_begin (cr, "Sect", NULL);
+ * cairo_tag_begin (cr, "H1", NULL);
+ * cairo_show_text (cr, "Heading 1");
+ * cairo_tag_end (cr, "H1");
+ *
+ * cairo_tag_begin (cr, "P", NULL);
+ * cairo_show_text (cr, "Paragraph 1");
+ * cairo_tag_end (cr, "P");
+ * cairo_tag_end (cr, "Sect");
+ *
+ * cairo_tag_begin (cr, "Sect", NULL);
+ * cairo_tag_begin (cr, "H1", NULL);
+ * cairo_show_text (cr, "Heading 2");
+ * cairo_tag_end (cr, "H1");
+ *
+ * cairo_tag_begin (cr, "P", NULL);
+ * cairo_show_text (cr, "Paragraph 2");
+ * cairo_tag_end (cr, "P");
+ * cairo_tag_end (cr, "Sect");
+ *
+ * cairo_tag_end (cr, "Document");
+ * </programlisting></informalexample>
+ *
+ **/
+
+#define DEFINE_NIL_CONTEXT(status)					\
+    {									\
+	CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */			\
+	status,				/* status */			\
+	{ 0, 0, 0, NULL },		/* user_data */			\
+	NULL								\
+    }
+
+static const cairo_t _cairo_nil[] = {
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_NO_MEMORY),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_RESTORE),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_POP_GROUP),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_NO_CURRENT_POINT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_MATRIX),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_STATUS),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_NULL_POINTER),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_STRING),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_PATH_DATA),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_READ_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_WRITE_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_SURFACE_FINISHED),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_SURFACE_TYPE_MISMATCH),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_PATTERN_TYPE_MISMATCH),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_CONTENT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_FORMAT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_VISUAL),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_FILE_NOT_FOUND),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_DASH),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_DSC_COMMENT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_INDEX),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_CLIP_NOT_REPRESENTABLE),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_TEMP_FILE_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_STRIDE),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_FONT_TYPE_MISMATCH),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_USER_FONT_IMMUTABLE),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_USER_FONT_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_NEGATIVE_COUNT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_CLUSTERS),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_SLANT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_WEIGHT),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_SIZE),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_TYPE_MISMATCH),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_MESH_CONSTRUCTION),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_FINISHED),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_JBIG2_GLOBAL_MISSING),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_PNG_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_FREETYPE_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_WIN32_GDI_ERROR),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_TAG_ERROR)
+
+};
+COMPILE_TIME_ASSERT (ARRAY_LENGTH (_cairo_nil) == CAIRO_STATUS_LAST_STATUS - 1);
+
+/**
+ * _cairo_set_error:
+ * @cr: a cairo context
+ * @status: a status value indicating an error
+ *
+ * Atomically sets cr->status to @status and calls _cairo_error;
+ * Does nothing if status is %CAIRO_STATUS_SUCCESS.
+ *
+ * All assignments of an error status to cr->status should happen
+ * through _cairo_set_error(). Note that due to the nature of the atomic
+ * operation, it is not safe to call this function on the nil objects.
+ *
+ * The purpose of this function is to allow the user to set a
+ * breakpoint in _cairo_error() to generate a stack trace for when the
+ * user causes cairo to detect an error.
+ **/
+static void
+_cairo_set_error (cairo_t *cr, cairo_status_t status)
+{
+    /* Don't overwrite an existing error. This preserves the first
+     * error, which is the most significant. */
+    _cairo_status_set_error (&cr->status, _cairo_error (status));
+}
+
+cairo_t *
+_cairo_create_in_error (cairo_status_t status)
+{
+    cairo_t *cr;
+
+    assert (status != CAIRO_STATUS_SUCCESS);
+
+    cr = (cairo_t *) &_cairo_nil[status - CAIRO_STATUS_NO_MEMORY];
+    assert (status == cr->status);
+
+    return cr;
+}
+
+/**
+ * cairo_create:
+ * @target: target surface for the context
+ *
+ * Creates a new #cairo_t with all graphics state parameters set to
+ * default values and with @target as a target surface. The target
+ * surface should be constructed with a backend-specific function such
+ * as cairo_image_surface_create() (or any other
+ * <function>cairo_<emphasis>backend</emphasis>_surface_create(<!-- -->)</function>
+ * variant).
+ *
+ * This function references @target, so you can immediately
+ * call cairo_surface_destroy() on it if you don't need to
+ * maintain a separate reference to it.
+ *
+ * Return value: a newly allocated #cairo_t with a reference
+ *  count of 1. The initial reference count should be released
+ *  with cairo_destroy() when you are done using the #cairo_t.
+ *  This function never returns %NULL. If memory cannot be
+ *  allocated, a special #cairo_t object will be returned on
+ *  which cairo_status() returns %CAIRO_STATUS_NO_MEMORY. If
+ *  you attempt to target a surface which does not support
+ *  writing (such as #cairo_mime_surface_t) then a
+ *  %CAIRO_STATUS_WRITE_ERROR will be raised.  You can use this
+ *  object normally, but no drawing will be done.
+ *
+ * Since: 1.0
+ **/
+cairo_t *
+cairo_create (cairo_surface_t *target)
+{
+    if (unlikely (target == NULL))
+	return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_NULL_POINTER));
+    if (unlikely (target->status))
+	return _cairo_create_in_error (target->status);
+    if (unlikely (target->finished))
+	return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
+
+    if (target->backend->create_context == NULL)
+	return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_WRITE_ERROR));
+
+    return target->backend->create_context (target);
+
+}
+slim_hidden_def (cairo_create);
+
+void
+_cairo_init (cairo_t *cr,
+	     const cairo_backend_t *backend)
+{
+    CAIRO_REFERENCE_COUNT_INIT (&cr->ref_count, 1);
+    cr->status = CAIRO_STATUS_SUCCESS;
+    _cairo_user_data_array_init (&cr->user_data);
+
+    cr->backend = backend;
+}
+
+/**
+ * cairo_reference:
+ * @cr: a #cairo_t
+ *
+ * Increases the reference count on @cr by one. This prevents
+ * @cr from being destroyed until a matching call to cairo_destroy()
+ * is made.
+ *
+ * Use cairo_get_reference_count() to get the number of references to
+ * a #cairo_t.
+ *
+ * Return value: the referenced #cairo_t.
+ *
+ * Since: 1.0
+ **/
+cairo_t *
+cairo_reference (cairo_t *cr)
+{
+    if (cr == NULL || CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count))
+	return cr;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count));
+
+    _cairo_reference_count_inc (&cr->ref_count);
+
+    return cr;
+}
+
+void
+_cairo_fini (cairo_t *cr)
+{
+    _cairo_user_data_array_fini (&cr->user_data);
+}
+
+/**
+ * cairo_destroy:
+ * @cr: a #cairo_t
+ *
+ * Decreases the reference count on @cr by one. If the result
+ * is zero, then @cr and all associated resources are freed.
+ * See cairo_reference().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_destroy (cairo_t *cr)
+{
+    if (cr == NULL || CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count))
+	return;
+
+    assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count));
+
+    if (! _cairo_reference_count_dec_and_test (&cr->ref_count))
+	return;
+
+    cr->backend->destroy (cr);
+}
+slim_hidden_def (cairo_destroy);
+
+/**
+ * cairo_get_user_data:
+ * @cr: a #cairo_t
+ * @key: the address of the #cairo_user_data_key_t the user data was
+ * attached to
+ *
+ * Return user data previously attached to @cr using the specified
+ * key.  If no user data has been attached with the given key this
+ * function returns %NULL.
+ *
+ * Return value: the user data previously attached or %NULL.
+ *
+ * Since: 1.4
+ **/
+void *
+cairo_get_user_data (cairo_t			 *cr,
+		     const cairo_user_data_key_t *key)
+{
+    return _cairo_user_data_array_get_data (&cr->user_data, key);
+}
+
+/**
+ * cairo_set_user_data:
+ * @cr: a #cairo_t
+ * @key: the address of a #cairo_user_data_key_t to attach the user data to
+ * @user_data: the user data to attach to the #cairo_t
+ * @destroy: a #cairo_destroy_func_t which will be called when the
+ * #cairo_t is destroyed or when new user data is attached using the
+ * same key.
+ *
+ * Attach user data to @cr.  To remove user data from a surface,
+ * call this function with the key that was used to set it and %NULL
+ * for @data.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
+ * slot could not be allocated for the user data.
+ *
+ * Since: 1.4
+ **/
+cairo_status_t
+cairo_set_user_data (cairo_t			 *cr,
+		     const cairo_user_data_key_t *key,
+		     void			 *user_data,
+		     cairo_destroy_func_t	 destroy)
+{
+    if (CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count))
+	return cr->status;
+
+    return _cairo_user_data_array_set_data (&cr->user_data,
+					    key, user_data, destroy);
+}
+
+/**
+ * cairo_get_reference_count:
+ * @cr: a #cairo_t
+ *
+ * Returns the current reference count of @cr.
+ *
+ * Return value: the current reference count of @cr.  If the
+ * object is a nil object, 0 will be returned.
+ *
+ * Since: 1.4
+ **/
+unsigned int
+cairo_get_reference_count (cairo_t *cr)
+{
+    if (cr == NULL || CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count))
+	return 0;
+
+    return CAIRO_REFERENCE_COUNT_GET_VALUE (&cr->ref_count);
+}
+
+/**
+ * cairo_save:
+ * @cr: a #cairo_t
+ *
+ * Makes a copy of the current state of @cr and saves it
+ * on an internal stack of saved states for @cr. When
+ * cairo_restore() is called, @cr will be restored to
+ * the saved state. Multiple calls to cairo_save() and
+ * cairo_restore() can be nested; each call to cairo_restore()
+ * restores the state from the matching paired cairo_save().
+ *
+ * It isn't necessary to clear all saved states before
+ * a #cairo_t is freed. If the reference count of a #cairo_t
+ * drops to zero in response to a call to cairo_destroy(),
+ * any saved states will be freed along with the #cairo_t.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_save (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->save (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_save);
+
+/**
+ * cairo_restore:
+ * @cr: a #cairo_t
+ *
+ * Restores @cr to the state saved by a preceding call to
+ * cairo_save() and removes that state from the stack of
+ * saved states.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_restore (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->restore (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_restore);
+
+/**
+ * cairo_push_group:
+ * @cr: a cairo context
+ *
+ * Temporarily redirects drawing to an intermediate surface known as a
+ * group. The redirection lasts until the group is completed by a call
+ * to cairo_pop_group() or cairo_pop_group_to_source(). These calls
+ * provide the result of any drawing to the group as a pattern,
+ * (either as an explicit object, or set as the source pattern).
+ *
+ * This group functionality can be convenient for performing
+ * intermediate compositing. One common use of a group is to render
+ * objects as opaque within the group, (so that they occlude each
+ * other), and then blend the result with translucence onto the
+ * destination.
+ *
+ * Groups can be nested arbitrarily deep by making balanced calls to
+ * cairo_push_group()/cairo_pop_group(). Each call pushes/pops the new
+ * target group onto/from a stack.
+ *
+ * The cairo_push_group() function calls cairo_save() so that any
+ * changes to the graphics state will not be visible outside the
+ * group, (the pop_group functions call cairo_restore()).
+ *
+ * By default the intermediate group will have a content type of
+ * %CAIRO_CONTENT_COLOR_ALPHA. Other content types can be chosen for
+ * the group by using cairo_push_group_with_content() instead.
+ *
+ * As an example, here is how one might fill and stroke a path with
+ * translucence, but without any portion of the fill being visible
+ * under the stroke:
+ *
+ * <informalexample><programlisting>
+ * cairo_push_group (cr);
+ * cairo_set_source (cr, fill_pattern);
+ * cairo_fill_preserve (cr);
+ * cairo_set_source (cr, stroke_pattern);
+ * cairo_stroke (cr);
+ * cairo_pop_group_to_source (cr);
+ * cairo_paint_with_alpha (cr, alpha);
+ * </programlisting></informalexample>
+ *
+ * Since: 1.2
+ **/
+void
+cairo_push_group (cairo_t *cr)
+{
+    cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
+}
+
+/**
+ * cairo_push_group_with_content:
+ * @cr: a cairo context
+ * @content: a #cairo_content_t indicating the type of group that
+ *           will be created
+ *
+ * Temporarily redirects drawing to an intermediate surface known as a
+ * group. The redirection lasts until the group is completed by a call
+ * to cairo_pop_group() or cairo_pop_group_to_source(). These calls
+ * provide the result of any drawing to the group as a pattern,
+ * (either as an explicit object, or set as the source pattern).
+ *
+ * The group will have a content type of @content. The ability to
+ * control this content type is the only distinction between this
+ * function and cairo_push_group() which you should see for a more
+ * detailed description of group rendering.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_push_group_with_content (cairo_t *cr, cairo_content_t content)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->push_group (cr, content);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_push_group_with_content);
+
+/**
+ * cairo_pop_group:
+ * @cr: a cairo context
+ *
+ * Terminates the redirection begun by a call to cairo_push_group() or
+ * cairo_push_group_with_content() and returns a new pattern
+ * containing the results of all drawing operations performed to the
+ * group.
+ *
+ * The cairo_pop_group() function calls cairo_restore(), (balancing a
+ * call to cairo_save() by the push_group function), so that any
+ * changes to the graphics state will not be visible outside the
+ * group.
+ *
+ * Return value: a newly created (surface) pattern containing the
+ * results of all drawing operations performed to the group. The
+ * caller owns the returned object and should call
+ * cairo_pattern_destroy() when finished with it.
+ *
+ * Since: 1.2
+ **/
+cairo_pattern_t *
+cairo_pop_group (cairo_t *cr)
+{
+    cairo_pattern_t *group_pattern;
+
+    if (unlikely (cr->status))
+	return _cairo_pattern_create_in_error (cr->status);
+
+    group_pattern = cr->backend->pop_group (cr);
+    if (unlikely (group_pattern->status))
+	_cairo_set_error (cr, group_pattern->status);
+
+    return group_pattern;
+}
+slim_hidden_def(cairo_pop_group);
+
+/**
+ * cairo_pop_group_to_source:
+ * @cr: a cairo context
+ *
+ * Terminates the redirection begun by a call to cairo_push_group() or
+ * cairo_push_group_with_content() and installs the resulting pattern
+ * as the source pattern in the given cairo context.
+ *
+ * The behavior of this function is equivalent to the sequence of
+ * operations:
+ *
+ * <informalexample><programlisting>
+ * cairo_pattern_t *group = cairo_pop_group (cr);
+ * cairo_set_source (cr, group);
+ * cairo_pattern_destroy (group);
+ * </programlisting></informalexample>
+ *
+ * but is more convenient as their is no need for a variable to store
+ * the short-lived pointer to the pattern.
+ *
+ * The cairo_pop_group() function calls cairo_restore(), (balancing a
+ * call to cairo_save() by the push_group function), so that any
+ * changes to the graphics state will not be visible outside the
+ * group.
+ *
+ * Since: 1.2
+ **/
+void
+cairo_pop_group_to_source (cairo_t *cr)
+{
+    cairo_pattern_t *group_pattern;
+
+    group_pattern = cairo_pop_group (cr);
+    cairo_set_source (cr, group_pattern);
+    cairo_pattern_destroy (group_pattern);
+}
+
+/**
+ * cairo_set_operator:
+ * @cr: a #cairo_t
+ * @op: a compositing operator, specified as a #cairo_operator_t
+ *
+ * Sets the compositing operator to be used for all drawing
+ * operations. See #cairo_operator_t for details on the semantics of
+ * each available compositing operator.
+ *
+ * The default operator is %CAIRO_OPERATOR_OVER.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_operator (cairo_t *cr, cairo_operator_t op)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_operator (cr, op);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_operator);
+
+
+#if 0
+/*
+ * cairo_set_opacity:
+ * @cr: a #cairo_t
+ * @opacity: the level of opacity to use when compositing
+ *
+ * Sets the compositing opacity to be used for all drawing
+ * operations. The effect is to fade out the operations
+ * using the alpha value.
+ *
+ * The default opacity is 1.
+ */
+void
+cairo_set_opacity (cairo_t *cr, double opacity)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_opacity (cr, opacity);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+#endif
+
+/**
+ * cairo_set_source_rgb:
+ * @cr: a cairo context
+ * @red: red component of color
+ * @green: green component of color
+ * @blue: blue component of color
+ *
+ * Sets the source pattern within @cr to an opaque color. This opaque
+ * color will then be used for any subsequent drawing operation until
+ * a new source pattern is set.
+ *
+ * The color components are floating point numbers in the range 0 to
+ * 1. If the values passed in are outside that range, they will be
+ * clamped.
+ *
+ * The default source pattern is opaque black, (that is, it is
+ * equivalent to cairo_set_source_rgb(cr, 0.0, 0.0, 0.0)).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_source_rgb (cairo_t *cr, double red, double green, double blue)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_source_rgba (cr, red, green, blue, 1.);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_source_rgb);
+
+/**
+ * cairo_set_source_rgba:
+ * @cr: a cairo context
+ * @red: red component of color
+ * @green: green component of color
+ * @blue: blue component of color
+ * @alpha: alpha component of color
+ *
+ * Sets the source pattern within @cr to a translucent color. This
+ * color will then be used for any subsequent drawing operation until
+ * a new source pattern is set.
+ *
+ * The color and alpha components are floating point numbers in the
+ * range 0 to 1. If the values passed in are outside that range, they
+ * will be clamped.
+ *
+ * The default source pattern is opaque black, (that is, it is
+ * equivalent to cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0)).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_source_rgba (cairo_t *cr,
+		       double red, double green, double blue,
+		       double alpha)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_source_rgba (cr, red, green, blue, alpha);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_set_source_surface:
+ * @cr: a cairo context
+ * @surface: a surface to be used to set the source pattern
+ * @x: User-space X coordinate for surface origin
+ * @y: User-space Y coordinate for surface origin
+ *
+ * This is a convenience function for creating a pattern from @surface
+ * and setting it as the source in @cr with cairo_set_source().
+ *
+ * The @x and @y parameters give the user-space coordinate at which
+ * the surface origin should appear. (The surface origin is its
+ * upper-left corner before any transformation has been applied.) The
+ * @x and @y parameters are negated and then set as translation values
+ * in the pattern matrix.
+ *
+ * Other than the initial translation pattern matrix, as described
+ * above, all other pattern attributes, (such as its extend mode), are
+ * set to the default values as in cairo_pattern_create_for_surface().
+ * The resulting pattern can be queried with cairo_get_source() so
+ * that these attributes can be modified if desired, (eg. to create a
+ * repeating pattern with cairo_pattern_set_extend()).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_source_surface (cairo_t	  *cr,
+			  cairo_surface_t *surface,
+			  double	   x,
+			  double	   y)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (unlikely (surface == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    status = cr->backend->set_source_surface (cr, surface, x, y);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_source_surface);
+
+/**
+ * cairo_set_source:
+ * @cr: a cairo context
+ * @source: a #cairo_pattern_t to be used as the source for
+ * subsequent drawing operations.
+ *
+ * Sets the source pattern within @cr to @source. This pattern
+ * will then be used for any subsequent drawing operation until a new
+ * source pattern is set.
+ *
+ * Note: The pattern's transformation matrix will be locked to the
+ * user space in effect at the time of cairo_set_source(). This means
+ * that further modifications of the current transformation matrix
+ * will not affect the source pattern. See cairo_pattern_set_matrix().
+ *
+ * The default source pattern is a solid pattern that is opaque black,
+ * (that is, it is equivalent to cairo_set_source_rgb(cr, 0.0, 0.0,
+ * 0.0)).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_source (cairo_t *cr, cairo_pattern_t *source)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (unlikely (source == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    if (unlikely (source->status)) {
+	_cairo_set_error (cr, source->status);
+	return;
+    }
+
+    status = cr->backend->set_source (cr, source);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_source);
+
+/**
+ * cairo_get_source:
+ * @cr: a cairo context
+ *
+ * Gets the current source pattern for @cr.
+ *
+ * Return value: the current source pattern. This object is owned by
+ * cairo. To keep a reference to it, you must call
+ * cairo_pattern_reference().
+ *
+ * Since: 1.0
+ **/
+cairo_pattern_t *
+cairo_get_source (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return _cairo_pattern_create_in_error (cr->status);
+
+    return cr->backend->get_source (cr);
+}
+
+/**
+ * cairo_set_tolerance:
+ * @cr: a #cairo_t
+ * @tolerance: the tolerance, in device units (typically pixels)
+ *
+ * Sets the tolerance used when converting paths into trapezoids.
+ * Curved segments of the path will be subdivided until the maximum
+ * deviation between the original path and the polygonal approximation
+ * is less than @tolerance. The default value is 0.1. A larger
+ * value will give better performance, a smaller value, better
+ * appearance. (Reducing the value from the default value of 0.1
+ * is unlikely to improve appearance significantly.)  The accuracy of paths
+ * within Cairo is limited by the precision of its internal arithmetic, and
+ * the prescribed @tolerance is restricted to the smallest
+ * representable internal value.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_tolerance (cairo_t *cr, double tolerance)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_tolerance (cr, tolerance);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_tolerance);
+
+/**
+ * cairo_set_antialias:
+ * @cr: a #cairo_t
+ * @antialias: the new antialiasing mode
+ *
+ * Set the antialiasing mode of the rasterizer used for drawing shapes.
+ * This value is a hint, and a particular backend may or may not support
+ * a particular value.  At the current time, no backend supports
+ * %CAIRO_ANTIALIAS_SUBPIXEL when drawing shapes.
+ *
+ * Note that this option does not affect text rendering, instead see
+ * cairo_font_options_set_antialias().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_antialias (cairo_t *cr, cairo_antialias_t antialias)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_antialias (cr, antialias);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_set_fill_rule:
+ * @cr: a #cairo_t
+ * @fill_rule: a fill rule, specified as a #cairo_fill_rule_t
+ *
+ * Set the current fill rule within the cairo context. The fill rule
+ * is used to determine which regions are inside or outside a complex
+ * (potentially self-intersecting) path. The current fill rule affects
+ * both cairo_fill() and cairo_clip(). See #cairo_fill_rule_t for details
+ * on the semantics of each available fill rule.
+ *
+ * The default fill rule is %CAIRO_FILL_RULE_WINDING.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_fill_rule (cairo_t *cr, cairo_fill_rule_t fill_rule)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_fill_rule (cr, fill_rule);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_set_line_width:
+ * @cr: a #cairo_t
+ * @width: a line width
+ *
+ * Sets the current line width within the cairo context. The line
+ * width value specifies the diameter of a pen that is circular in
+ * user space, (though device-space pen may be an ellipse in general
+ * due to scaling/shear/rotation of the CTM).
+ *
+ * Note: When the description above refers to user space and CTM it
+ * refers to the user space and CTM in effect at the time of the
+ * stroking operation, not the user space and CTM in effect at the
+ * time of the call to cairo_set_line_width(). The simplest usage
+ * makes both of these spaces identical. That is, if there is no
+ * change to the CTM between a call to cairo_set_line_width() and the
+ * stroking operation, then one can just pass user-space values to
+ * cairo_set_line_width() and ignore this note.
+ *
+ * As with the other stroke parameters, the current line width is
+ * examined by cairo_stroke(), cairo_stroke_extents(), and
+ * cairo_stroke_to_path(), but does not have any effect during path
+ * construction.
+ *
+ * The default line width value is 2.0.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_line_width (cairo_t *cr, double width)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (width < 0.)
+	width = 0.;
+
+    status = cr->backend->set_line_width (cr, width);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_line_width);
+
+/**
+ * cairo_set_line_cap:
+ * @cr: a cairo context
+ * @line_cap: a line cap style
+ *
+ * Sets the current line cap style within the cairo context. See
+ * #cairo_line_cap_t for details about how the available line cap
+ * styles are drawn.
+ *
+ * As with the other stroke parameters, the current line cap style is
+ * examined by cairo_stroke(), cairo_stroke_extents(), and
+ * cairo_stroke_to_path(), but does not have any effect during path
+ * construction.
+ *
+ * The default line cap style is %CAIRO_LINE_CAP_BUTT.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_line_cap (cairo_t *cr, cairo_line_cap_t line_cap)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_line_cap (cr, line_cap);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_line_cap);
+
+/**
+ * cairo_set_line_join:
+ * @cr: a cairo context
+ * @line_join: a line join style
+ *
+ * Sets the current line join style within the cairo context. See
+ * #cairo_line_join_t for details about how the available line join
+ * styles are drawn.
+ *
+ * As with the other stroke parameters, the current line join style is
+ * examined by cairo_stroke(), cairo_stroke_extents(), and
+ * cairo_stroke_to_path(), but does not have any effect during path
+ * construction.
+ *
+ * The default line join style is %CAIRO_LINE_JOIN_MITER.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_line_join (cairo_t *cr, cairo_line_join_t line_join)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_line_join (cr, line_join);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_line_join);
+
+/**
+ * cairo_set_dash:
+ * @cr: a cairo context
+ * @dashes: an array specifying alternate lengths of on and off stroke portions
+ * @num_dashes: the length of the dashes array
+ * @offset: an offset into the dash pattern at which the stroke should start
+ *
+ * Sets the dash pattern to be used by cairo_stroke(). A dash pattern
+ * is specified by @dashes, an array of positive values. Each value
+ * provides the length of alternate "on" and "off" portions of the
+ * stroke. The @offset specifies an offset into the pattern at which
+ * the stroke begins.
+ *
+ * Each "on" segment will have caps applied as if the segment were a
+ * separate sub-path. In particular, it is valid to use an "on" length
+ * of 0.0 with %CAIRO_LINE_CAP_ROUND or %CAIRO_LINE_CAP_SQUARE in order
+ * to distributed dots or squares along a path.
+ *
+ * Note: The length values are in user-space units as evaluated at the
+ * time of stroking. This is not necessarily the same as the user
+ * space at the time of cairo_set_dash().
+ *
+ * If @num_dashes is 0 dashing is disabled.
+ *
+ * If @num_dashes is 1 a symmetric pattern is assumed with alternating
+ * on and off portions of the size specified by the single value in
+ * @dashes.
+ *
+ * If any value in @dashes is negative, or if all values are 0, then
+ * @cr will be put into an error state with a status of
+ * %CAIRO_STATUS_INVALID_DASH.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_dash (cairo_t	     *cr,
+		const double *dashes,
+		int	      num_dashes,
+		double	      offset)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_dash (cr, dashes, num_dashes, offset);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_get_dash_count:
+ * @cr: a #cairo_t
+ *
+ * This function returns the length of the dash array in @cr (0 if dashing
+ * is not currently in effect).
+ *
+ * See also cairo_set_dash() and cairo_get_dash().
+ *
+ * Return value: the length of the dash array, or 0 if no dash array set.
+ *
+ * Since: 1.4
+ **/
+int
+cairo_get_dash_count (cairo_t *cr)
+{
+    int num_dashes;
+
+    if (unlikely (cr->status))
+	return 0;
+
+    cr->backend->get_dash (cr, NULL, &num_dashes, NULL);
+
+    return num_dashes;
+}
+
+/**
+ * cairo_get_dash:
+ * @cr: a #cairo_t
+ * @dashes: return value for the dash array, or %NULL
+ * @offset: return value for the current dash offset, or %NULL
+ *
+ * Gets the current dash array.  If not %NULL, @dashes should be big
+ * enough to hold at least the number of values returned by
+ * cairo_get_dash_count().
+ *
+ * Since: 1.4
+ **/
+void
+cairo_get_dash (cairo_t *cr,
+		double  *dashes,
+		double  *offset)
+{
+    if (unlikely (cr->status))
+	return;
+
+    cr->backend->get_dash (cr, dashes, NULL, offset);
+}
+
+/**
+ * cairo_set_miter_limit:
+ * @cr: a cairo context
+ * @limit: miter limit to set
+ *
+ * Sets the current miter limit within the cairo context.
+ *
+ * If the current line join style is set to %CAIRO_LINE_JOIN_MITER
+ * (see cairo_set_line_join()), the miter limit is used to determine
+ * whether the lines should be joined with a bevel instead of a miter.
+ * Cairo divides the length of the miter by the line width.
+ * If the result is greater than the miter limit, the style is
+ * converted to a bevel.
+ *
+ * As with the other stroke parameters, the current line miter limit is
+ * examined by cairo_stroke(), cairo_stroke_extents(), and
+ * cairo_stroke_to_path(), but does not have any effect during path
+ * construction.
+ *
+ * The default miter limit value is 10.0, which will convert joins
+ * with interior angles less than 11 degrees to bevels instead of
+ * miters. For reference, a miter limit of 2.0 makes the miter cutoff
+ * at 60 degrees, and a miter limit of 1.414 makes the cutoff at 90
+ * degrees.
+ *
+ * A miter limit for a desired angle can be computed as: miter limit =
+ * 1/sin(angle/2)
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_miter_limit (cairo_t *cr, double limit)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_miter_limit (cr, limit);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_translate:
+ * @cr: a cairo context
+ * @tx: amount to translate in the X direction
+ * @ty: amount to translate in the Y direction
+ *
+ * Modifies the current transformation matrix (CTM) by translating the
+ * user-space origin by (@tx, @ty). This offset is interpreted as a
+ * user-space coordinate according to the CTM in place before the new
+ * call to cairo_translate(). In other words, the translation of the
+ * user-space origin takes place after any existing transformation.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_translate (cairo_t *cr, double tx, double ty)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->translate (cr, tx, ty);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_translate);
+
+/**
+ * cairo_scale:
+ * @cr: a cairo context
+ * @sx: scale factor for the X dimension
+ * @sy: scale factor for the Y dimension
+ *
+ * Modifies the current transformation matrix (CTM) by scaling the X
+ * and Y user-space axes by @sx and @sy respectively. The scaling of
+ * the axes takes place after any existing transformation of user
+ * space.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_scale (cairo_t *cr, double sx, double sy)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->scale (cr, sx, sy);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_scale);
+
+/**
+ * cairo_rotate:
+ * @cr: a cairo context
+ * @angle: angle (in radians) by which the user-space axes will be
+ * rotated
+ *
+ * Modifies the current transformation matrix (CTM) by rotating the
+ * user-space axes by @angle radians. The rotation of the axes takes
+ * places after any existing transformation of user space. The
+ * rotation direction for positive angles is from the positive X axis
+ * toward the positive Y axis.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_rotate (cairo_t *cr, double angle)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->rotate (cr, angle);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_transform:
+ * @cr: a cairo context
+ * @matrix: a transformation to be applied to the user-space axes
+ *
+ * Modifies the current transformation matrix (CTM) by applying
+ * @matrix as an additional transformation. The new transformation of
+ * user space takes place after any existing transformation.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_transform (cairo_t	      *cr,
+		 const cairo_matrix_t *matrix)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->transform (cr, matrix);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_transform);
+
+/**
+ * cairo_set_matrix:
+ * @cr: a cairo context
+ * @matrix: a transformation matrix from user space to device space
+ *
+ * Modifies the current transformation matrix (CTM) by setting it
+ * equal to @matrix.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_matrix (cairo_t	       *cr,
+		  const cairo_matrix_t *matrix)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_matrix (cr, matrix);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_matrix);
+
+/**
+ * cairo_identity_matrix:
+ * @cr: a cairo context
+ *
+ * Resets the current transformation matrix (CTM) by setting it equal
+ * to the identity matrix. That is, the user-space and device-space
+ * axes will be aligned and one user-space unit will transform to one
+ * device-space unit.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_identity_matrix (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_identity_matrix (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_user_to_device:
+ * @cr: a cairo context
+ * @x: X value of coordinate (in/out parameter)
+ * @y: Y value of coordinate (in/out parameter)
+ *
+ * Transform a coordinate from user space to device space by
+ * multiplying the given point by the current transformation matrix
+ * (CTM).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_user_to_device (cairo_t *cr, double *x, double *y)
+{
+    if (unlikely (cr->status))
+	return;
+
+    cr->backend->user_to_device (cr, x, y);
+}
+slim_hidden_def (cairo_user_to_device);
+
+/**
+ * cairo_user_to_device_distance:
+ * @cr: a cairo context
+ * @dx: X component of a distance vector (in/out parameter)
+ * @dy: Y component of a distance vector (in/out parameter)
+ *
+ * Transform a distance vector from user space to device space. This
+ * function is similar to cairo_user_to_device() except that the
+ * translation components of the CTM will be ignored when transforming
+ * (@dx,@dy).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_user_to_device_distance (cairo_t *cr, double *dx, double *dy)
+{
+    if (unlikely (cr->status))
+	return;
+
+    cr->backend->user_to_device_distance (cr, dx, dy);
+}
+slim_hidden_def (cairo_user_to_device_distance);
+
+/**
+ * cairo_device_to_user:
+ * @cr: a cairo
+ * @x: X value of coordinate (in/out parameter)
+ * @y: Y value of coordinate (in/out parameter)
+ *
+ * Transform a coordinate from device space to user space by
+ * multiplying the given point by the inverse of the current
+ * transformation matrix (CTM).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_device_to_user (cairo_t *cr, double *x, double *y)
+{
+    if (unlikely (cr->status))
+	return;
+
+    cr->backend->device_to_user (cr, x, y);
+}
+slim_hidden_def (cairo_device_to_user);
+
+/**
+ * cairo_device_to_user_distance:
+ * @cr: a cairo context
+ * @dx: X component of a distance vector (in/out parameter)
+ * @dy: Y component of a distance vector (in/out parameter)
+ *
+ * Transform a distance vector from device space to user space. This
+ * function is similar to cairo_device_to_user() except that the
+ * translation components of the inverse CTM will be ignored when
+ * transforming (@dx,@dy).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_device_to_user_distance (cairo_t *cr, double *dx, double *dy)
+{
+    if (unlikely (cr->status))
+	return;
+
+    cr->backend->device_to_user_distance (cr, dx, dy);
+}
+
+/**
+ * cairo_new_path:
+ * @cr: a cairo context
+ *
+ * Clears the current path. After this call there will be no path and
+ * no current point.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_new_path (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->new_path (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_new_path);
+
+/**
+ * cairo_new_sub_path:
+ * @cr: a cairo context
+ *
+ * Begin a new sub-path. Note that the existing path is not
+ * affected. After this call there will be no current point.
+ *
+ * In many cases, this call is not needed since new sub-paths are
+ * frequently started with cairo_move_to().
+ *
+ * A call to cairo_new_sub_path() is particularly useful when
+ * beginning a new sub-path with one of the cairo_arc() calls. This
+ * makes things easier as it is no longer necessary to manually
+ * compute the arc's initial coordinates for a call to
+ * cairo_move_to().
+ *
+ * Since: 1.2
+ **/
+void
+cairo_new_sub_path (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->new_sub_path (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_move_to:
+ * @cr: a cairo context
+ * @x: the X coordinate of the new position
+ * @y: the Y coordinate of the new position
+ *
+ * Begin a new sub-path. After this call the current point will be (@x,
+ * @y).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_move_to (cairo_t *cr, double x, double y)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->move_to (cr, x, y);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_move_to);
+
+
+/**
+ * cairo_line_to:
+ * @cr: a cairo context
+ * @x: the X coordinate of the end of the new line
+ * @y: the Y coordinate of the end of the new line
+ *
+ * Adds a line to the path from the current point to position (@x, @y)
+ * in user-space coordinates. After this call the current point
+ * will be (@x, @y).
+ *
+ * If there is no current point before the call to cairo_line_to()
+ * this function will behave as cairo_move_to(@cr, @x, @y).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_line_to (cairo_t *cr, double x, double y)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->line_to (cr, x, y);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_line_to);
+
+/**
+ * cairo_curve_to:
+ * @cr: a cairo context
+ * @x1: the X coordinate of the first control point
+ * @y1: the Y coordinate of the first control point
+ * @x2: the X coordinate of the second control point
+ * @y2: the Y coordinate of the second control point
+ * @x3: the X coordinate of the end of the curve
+ * @y3: the Y coordinate of the end of the curve
+ *
+ * Adds a cubic Bézier spline to the path from the current point to
+ * position (@x3, @y3) in user-space coordinates, using (@x1, @y1) and
+ * (@x2, @y2) as the control points. After this call the current point
+ * will be (@x3, @y3).
+ *
+ * If there is no current point before the call to cairo_curve_to()
+ * this function will behave as if preceded by a call to
+ * cairo_move_to(@cr, @x1, @y1).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_curve_to (cairo_t *cr,
+		double x1, double y1,
+		double x2, double y2,
+		double x3, double y3)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->curve_to (cr,
+				    x1, y1,
+				    x2, y2,
+				    x3, y3);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_curve_to);
+
+/**
+ * cairo_arc:
+ * @cr: a cairo context
+ * @xc: X position of the center of the arc
+ * @yc: Y position of the center of the arc
+ * @radius: the radius of the arc
+ * @angle1: the start angle, in radians
+ * @angle2: the end angle, in radians
+ *
+ * Adds a circular arc of the given @radius to the current path.  The
+ * arc is centered at (@xc, @yc), begins at @angle1 and proceeds in
+ * the direction of increasing angles to end at @angle2. If @angle2 is
+ * less than @angle1 it will be progressively increased by
+ * <literal>2*M_PI</literal> until it is greater than @angle1.
+ *
+ * If there is a current point, an initial line segment will be added
+ * to the path to connect the current point to the beginning of the
+ * arc. If this initial line is undesired, it can be avoided by
+ * calling cairo_new_sub_path() before calling cairo_arc().
+ *
+ * Angles are measured in radians. An angle of 0.0 is in the direction
+ * of the positive X axis (in user space). An angle of
+ * <literal>M_PI/2.0</literal> radians (90 degrees) is in the
+ * direction of the positive Y axis (in user space). Angles increase
+ * in the direction from the positive X axis toward the positive Y
+ * axis. So with the default transformation matrix, angles increase in
+ * a clockwise direction.
+ *
+ * (To convert from degrees to radians, use <literal>degrees * (M_PI /
+ * 180.)</literal>.)
+ *
+ * This function gives the arc in the direction of increasing angles;
+ * see cairo_arc_negative() to get the arc in the direction of
+ * decreasing angles.
+ *
+ * The arc is circular in user space. To achieve an elliptical arc,
+ * you can scale the current transformation matrix by different
+ * amounts in the X and Y directions. For example, to draw an ellipse
+ * in the box given by @x, @y, @width, @height:
+ *
+ * <informalexample><programlisting>
+ * cairo_save (cr);
+ * cairo_translate (cr, x + width / 2., y + height / 2.);
+ * cairo_scale (cr, width / 2., height / 2.);
+ * cairo_arc (cr, 0., 0., 1., 0., 2 * M_PI);
+ * cairo_restore (cr);
+ * </programlisting></informalexample>
+ *
+ * Since: 1.0
+ **/
+void
+cairo_arc (cairo_t *cr,
+	   double xc, double yc,
+	   double radius,
+	   double angle1, double angle2)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (angle2 < angle1) {
+	/* increase angle2 by multiples of full circle until it
+	 * satisfies angle2 >= angle1 */
+	angle2 = fmod (angle2 - angle1, 2 * M_PI);
+	if (angle2 < 0)
+	    angle2 += 2 * M_PI;
+	angle2 += angle1;
+    }
+
+    status = cr->backend->arc (cr, xc, yc, radius, angle1, angle2, TRUE);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_arc_negative:
+ * @cr: a cairo context
+ * @xc: X position of the center of the arc
+ * @yc: Y position of the center of the arc
+ * @radius: the radius of the arc
+ * @angle1: the start angle, in radians
+ * @angle2: the end angle, in radians
+ *
+ * Adds a circular arc of the given @radius to the current path.  The
+ * arc is centered at (@xc, @yc), begins at @angle1 and proceeds in
+ * the direction of decreasing angles to end at @angle2. If @angle2 is
+ * greater than @angle1 it will be progressively decreased by
+ * <literal>2*M_PI</literal> until it is less than @angle1.
+ *
+ * See cairo_arc() for more details. This function differs only in the
+ * direction of the arc between the two angles.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_arc_negative (cairo_t *cr,
+		    double xc, double yc,
+		    double radius,
+		    double angle1, double angle2)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (angle2 > angle1) {
+	/* decrease angle2 by multiples of full circle until it
+	 * satisfies angle2 <= angle1 */
+	angle2 = fmod (angle2 - angle1, 2 * M_PI);
+	if (angle2 > 0)
+	    angle2 -= 2 * M_PI;
+	angle2 += angle1;
+    }
+
+    status = cr->backend->arc (cr, xc, yc, radius, angle1, angle2, FALSE);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/* XXX: NYI
+void
+cairo_arc_to (cairo_t *cr,
+	      double x1, double y1,
+	      double x2, double y2,
+	      double radius)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->arc_to (cr, x1, y1, x2, y2, radius);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+void
+cairo_rel_arc_to (cairo_t *cr,
+	      double dx1, double dy1,
+	      double dx2, double dy2,
+	      double radius)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->rel_arc_to (cr, dx1, dy1, dx2, dy2, radius);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+*/
+
+/**
+ * cairo_rel_move_to:
+ * @cr: a cairo context
+ * @dx: the X offset
+ * @dy: the Y offset
+ *
+ * Begin a new sub-path. After this call the current point will offset
+ * by (@x, @y).
+ *
+ * Given a current point of (x, y), cairo_rel_move_to(@cr, @dx, @dy)
+ * is logically equivalent to cairo_move_to(@cr, x + @dx, y + @dy).
+ *
+ * It is an error to call this function with no current point. Doing
+ * so will cause @cr to shutdown with a status of
+ * %CAIRO_STATUS_NO_CURRENT_POINT.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_rel_move_to (cairo_t *cr, double dx, double dy)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->rel_move_to (cr, dx, dy);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_rel_line_to:
+ * @cr: a cairo context
+ * @dx: the X offset to the end of the new line
+ * @dy: the Y offset to the end of the new line
+ *
+ * Relative-coordinate version of cairo_line_to(). Adds a line to the
+ * path from the current point to a point that is offset from the
+ * current point by (@dx, @dy) in user space. After this call the
+ * current point will be offset by (@dx, @dy).
+ *
+ * Given a current point of (x, y), cairo_rel_line_to(@cr, @dx, @dy)
+ * is logically equivalent to cairo_line_to(@cr, x + @dx, y + @dy).
+ *
+ * It is an error to call this function with no current point. Doing
+ * so will cause @cr to shutdown with a status of
+ * %CAIRO_STATUS_NO_CURRENT_POINT.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_rel_line_to (cairo_t *cr, double dx, double dy)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->rel_line_to (cr, dx, dy);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_rel_line_to);
+
+/**
+ * cairo_rel_curve_to:
+ * @cr: a cairo context
+ * @dx1: the X offset to the first control point
+ * @dy1: the Y offset to the first control point
+ * @dx2: the X offset to the second control point
+ * @dy2: the Y offset to the second control point
+ * @dx3: the X offset to the end of the curve
+ * @dy3: the Y offset to the end of the curve
+ *
+ * Relative-coordinate version of cairo_curve_to(). All offsets are
+ * relative to the current point. Adds a cubic Bézier spline to the
+ * path from the current point to a point offset from the current
+ * point by (@dx3, @dy3), using points offset by (@dx1, @dy1) and
+ * (@dx2, @dy2) as the control points. After this call the current
+ * point will be offset by (@dx3, @dy3).
+ *
+ * Given a current point of (x, y), cairo_rel_curve_to(@cr, @dx1,
+ * @dy1, @dx2, @dy2, @dx3, @dy3) is logically equivalent to
+ * cairo_curve_to(@cr, x+@dx1, y+@dy1, x+@dx2, y+@dy2, x+@dx3, y+@dy3).
+ *
+ * It is an error to call this function with no current point. Doing
+ * so will cause @cr to shutdown with a status of
+ * %CAIRO_STATUS_NO_CURRENT_POINT.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_rel_curve_to (cairo_t *cr,
+		    double dx1, double dy1,
+		    double dx2, double dy2,
+		    double dx3, double dy3)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->rel_curve_to (cr,
+					dx1, dy1,
+					dx2, dy2,
+					dx3, dy3);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_rectangle:
+ * @cr: a cairo context
+ * @x: the X coordinate of the top left corner of the rectangle
+ * @y: the Y coordinate to the top left corner of the rectangle
+ * @width: the width of the rectangle
+ * @height: the height of the rectangle
+ *
+ * Adds a closed sub-path rectangle of the given size to the current
+ * path at position (@x, @y) in user-space coordinates.
+ *
+ * This function is logically equivalent to:
+ * <informalexample><programlisting>
+ * cairo_move_to (cr, x, y);
+ * cairo_rel_line_to (cr, width, 0);
+ * cairo_rel_line_to (cr, 0, height);
+ * cairo_rel_line_to (cr, -width, 0);
+ * cairo_close_path (cr);
+ * </programlisting></informalexample>
+ *
+ * Since: 1.0
+ **/
+void
+cairo_rectangle (cairo_t *cr,
+		 double x, double y,
+		 double width, double height)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->rectangle (cr, x, y, width, height);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+#if 0
+/* XXX: NYI */
+void
+cairo_stroke_to_path (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    /* The code in _cairo_recording_surface_get_path has a poorman's stroke_to_path */
+
+    status = _cairo_gstate_stroke_path (cr->gstate);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+#endif
+
+/**
+ * cairo_close_path:
+ * @cr: a cairo context
+ *
+ * Adds a line segment to the path from the current point to the
+ * beginning of the current sub-path, (the most recent point passed to
+ * cairo_move_to()), and closes this sub-path. After this call the
+ * current point will be at the joined endpoint of the sub-path.
+ *
+ * The behavior of cairo_close_path() is distinct from simply calling
+ * cairo_line_to() with the equivalent coordinate in the case of
+ * stroking. When a closed sub-path is stroked, there are no caps on
+ * the ends of the sub-path. Instead, there is a line join connecting
+ * the final and initial segments of the sub-path.
+ *
+ * If there is no current point before the call to cairo_close_path(),
+ * this function will have no effect.
+ *
+ * Note: As of cairo version 1.2.4 any call to cairo_close_path() will
+ * place an explicit MOVE_TO element into the path immediately after
+ * the CLOSE_PATH element, (which can be seen in cairo_copy_path() for
+ * example). This can simplify path processing in some cases as it may
+ * not be necessary to save the "last move_to point" during processing
+ * as the MOVE_TO immediately after the CLOSE_PATH will provide that
+ * point.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_close_path (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->close_path (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_close_path);
+
+/**
+ * cairo_path_extents:
+ * @cr: a cairo context
+ * @x1: left of the resulting extents
+ * @y1: top of the resulting extents
+ * @x2: right of the resulting extents
+ * @y2: bottom of the resulting extents
+ *
+ * Computes a bounding box in user-space coordinates covering the
+ * points on the current path. If the current path is empty, returns
+ * an empty rectangle ((0,0), (0,0)). Stroke parameters, fill rule,
+ * surface dimensions and clipping are not taken into account.
+ *
+ * Contrast with cairo_fill_extents() and cairo_stroke_extents() which
+ * return the extents of only the area that would be "inked" by
+ * the corresponding drawing operations.
+ *
+ * The result of cairo_path_extents() is defined as equivalent to the
+ * limit of cairo_stroke_extents() with %CAIRO_LINE_CAP_ROUND as the
+ * line width approaches 0.0, (but never reaching the empty-rectangle
+ * returned by cairo_stroke_extents() for a line width of 0.0).
+ *
+ * Specifically, this means that zero-area sub-paths such as
+ * cairo_move_to();cairo_line_to() segments, (even degenerate cases
+ * where the coordinates to both calls are identical), will be
+ * considered as contributing to the extents. However, a lone
+ * cairo_move_to() will not contribute to the results of
+ * cairo_path_extents().
+ *
+ * Since: 1.6
+ **/
+void
+cairo_path_extents (cairo_t *cr,
+		    double *x1, double *y1, double *x2, double *y2)
+{
+    if (unlikely (cr->status)) {
+	if (x1)
+	    *x1 = 0.0;
+	if (y1)
+	    *y1 = 0.0;
+	if (x2)
+	    *x2 = 0.0;
+	if (y2)
+	    *y2 = 0.0;
+
+	return;
+    }
+
+    cr->backend->path_extents (cr, x1, y1, x2, y2);
+}
+
+/**
+ * cairo_paint:
+ * @cr: a cairo context
+ *
+ * A drawing operator that paints the current source everywhere within
+ * the current clip region.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_paint (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->paint (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_paint);
+
+/**
+ * cairo_paint_with_alpha:
+ * @cr: a cairo context
+ * @alpha: alpha value, between 0 (transparent) and 1 (opaque)
+ *
+ * A drawing operator that paints the current source everywhere within
+ * the current clip region using a mask of constant alpha value
+ * @alpha. The effect is similar to cairo_paint(), but the drawing
+ * is faded out using the alpha value.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_paint_with_alpha (cairo_t *cr,
+			double   alpha)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->paint_with_alpha (cr, alpha);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_mask:
+ * @cr: a cairo context
+ * @pattern: a #cairo_pattern_t
+ *
+ * A drawing operator that paints the current source
+ * using the alpha channel of @pattern as a mask. (Opaque
+ * areas of @pattern are painted with the source, transparent
+ * areas are not painted.)
+ *
+ * Since: 1.0
+ **/
+void
+cairo_mask (cairo_t         *cr,
+	    cairo_pattern_t *pattern)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (unlikely (pattern == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    if (unlikely (pattern->status)) {
+	_cairo_set_error (cr, pattern->status);
+	return;
+    }
+
+    status = cr->backend->mask (cr, pattern);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_mask);
+
+/**
+ * cairo_mask_surface:
+ * @cr: a cairo context
+ * @surface: a #cairo_surface_t
+ * @surface_x: X coordinate at which to place the origin of @surface
+ * @surface_y: Y coordinate at which to place the origin of @surface
+ *
+ * A drawing operator that paints the current source
+ * using the alpha channel of @surface as a mask. (Opaque
+ * areas of @surface are painted with the source, transparent
+ * areas are not painted.)
+ *
+ * Since: 1.0
+ **/
+void
+cairo_mask_surface (cairo_t         *cr,
+		    cairo_surface_t *surface,
+		    double           surface_x,
+		    double           surface_y)
+{
+    cairo_pattern_t *pattern;
+    cairo_matrix_t matrix;
+
+    if (unlikely (cr->status))
+	return;
+
+    pattern = cairo_pattern_create_for_surface (surface);
+
+    cairo_matrix_init_translate (&matrix, - surface_x, - surface_y);
+    cairo_pattern_set_matrix (pattern, &matrix);
+
+    cairo_mask (cr, pattern);
+
+    cairo_pattern_destroy (pattern);
+}
+
+/**
+ * cairo_stroke:
+ * @cr: a cairo context
+ *
+ * A drawing operator that strokes the current path according to the
+ * current line width, line join, line cap, and dash settings. After
+ * cairo_stroke(), the current path will be cleared from the cairo
+ * context. See cairo_set_line_width(), cairo_set_line_join(),
+ * cairo_set_line_cap(), cairo_set_dash(), and
+ * cairo_stroke_preserve().
+ *
+ * Note: Degenerate segments and sub-paths are treated specially and
+ * provide a useful result. These can result in two different
+ * situations:
+ *
+ * 1. Zero-length "on" segments set in cairo_set_dash(). If the cap
+ * style is %CAIRO_LINE_CAP_ROUND or %CAIRO_LINE_CAP_SQUARE then these
+ * segments will be drawn as circular dots or squares respectively. In
+ * the case of %CAIRO_LINE_CAP_SQUARE, the orientation of the squares
+ * is determined by the direction of the underlying path.
+ *
+ * 2. A sub-path created by cairo_move_to() followed by either a
+ * cairo_close_path() or one or more calls to cairo_line_to() to the
+ * same coordinate as the cairo_move_to(). If the cap style is
+ * %CAIRO_LINE_CAP_ROUND then these sub-paths will be drawn as circular
+ * dots. Note that in the case of %CAIRO_LINE_CAP_SQUARE a degenerate
+ * sub-path will not be drawn at all, (since the correct orientation
+ * is indeterminate).
+ *
+ * In no case will a cap style of %CAIRO_LINE_CAP_BUTT cause anything
+ * to be drawn in the case of either degenerate segments or sub-paths.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_stroke (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->stroke (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_stroke);
+
+/**
+ * cairo_stroke_preserve:
+ * @cr: a cairo context
+ *
+ * A drawing operator that strokes the current path according to the
+ * current line width, line join, line cap, and dash settings. Unlike
+ * cairo_stroke(), cairo_stroke_preserve() preserves the path within the
+ * cairo context.
+ *
+ * See cairo_set_line_width(), cairo_set_line_join(),
+ * cairo_set_line_cap(), cairo_set_dash(), and
+ * cairo_stroke_preserve().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_stroke_preserve (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->stroke_preserve (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_stroke_preserve);
+
+/**
+ * cairo_fill:
+ * @cr: a cairo context
+ *
+ * A drawing operator that fills the current path according to the
+ * current fill rule, (each sub-path is implicitly closed before being
+ * filled). After cairo_fill(), the current path will be cleared from
+ * the cairo context. See cairo_set_fill_rule() and
+ * cairo_fill_preserve().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_fill (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->fill (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_fill_preserve:
+ * @cr: a cairo context
+ *
+ * A drawing operator that fills the current path according to the
+ * current fill rule, (each sub-path is implicitly closed before being
+ * filled). Unlike cairo_fill(), cairo_fill_preserve() preserves the
+ * path within the cairo context.
+ *
+ * See cairo_set_fill_rule() and cairo_fill().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_fill_preserve (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->fill_preserve (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_fill_preserve);
+
+/**
+ * cairo_copy_page:
+ * @cr: a cairo context
+ *
+ * Emits the current page for backends that support multiple pages, but
+ * doesn't clear it, so, the contents of the current page will be retained
+ * for the next page too.  Use cairo_show_page() if you want to get an
+ * empty page after the emission.
+ *
+ * This is a convenience function that simply calls
+ * cairo_surface_copy_page() on @cr's target.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_copy_page (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->copy_page (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_show_page:
+ * @cr: a cairo context
+ *
+ * Emits and clears the current page for backends that support multiple
+ * pages.  Use cairo_copy_page() if you don't want to clear the page.
+ *
+ * This is a convenience function that simply calls
+ * cairo_surface_show_page() on @cr's target.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_show_page (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->show_page (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_in_stroke:
+ * @cr: a cairo context
+ * @x: X coordinate of the point to test
+ * @y: Y coordinate of the point to test
+ *
+ * Tests whether the given point is inside the area that would be
+ * affected by a cairo_stroke() operation given the current path and
+ * stroking parameters. Surface dimensions and clipping are not taken
+ * into account.
+ *
+ * See cairo_stroke(), cairo_set_line_width(), cairo_set_line_join(),
+ * cairo_set_line_cap(), cairo_set_dash(), and
+ * cairo_stroke_preserve().
+ *
+ * Return value: A non-zero value if the point is inside, or zero if
+ * outside.
+ *
+ * Since: 1.0
+ **/
+cairo_bool_t
+cairo_in_stroke (cairo_t *cr, double x, double y)
+{
+    cairo_status_t status;
+    cairo_bool_t inside = FALSE;
+
+    if (unlikely (cr->status))
+	return FALSE;
+
+    status = cr->backend->in_stroke (cr, x, y, &inside);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+
+    return inside;
+}
+
+/**
+ * cairo_in_fill:
+ * @cr: a cairo context
+ * @x: X coordinate of the point to test
+ * @y: Y coordinate of the point to test
+ *
+ * Tests whether the given point is inside the area that would be
+ * affected by a cairo_fill() operation given the current path and
+ * filling parameters. Surface dimensions and clipping are not taken
+ * into account.
+ *
+ * See cairo_fill(), cairo_set_fill_rule() and cairo_fill_preserve().
+ *
+ * Return value: A non-zero value if the point is inside, or zero if
+ * outside.
+ *
+ * Since: 1.0
+ **/
+cairo_bool_t
+cairo_in_fill (cairo_t *cr, double x, double y)
+{
+    cairo_status_t status;
+    cairo_bool_t inside = FALSE;
+
+    if (unlikely (cr->status))
+	return FALSE;
+
+    status = cr->backend->in_fill (cr, x, y, &inside);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+
+    return inside;
+}
+
+/**
+ * cairo_stroke_extents:
+ * @cr: a cairo context
+ * @x1: left of the resulting extents
+ * @y1: top of the resulting extents
+ * @x2: right of the resulting extents
+ * @y2: bottom of the resulting extents
+ *
+ * Computes a bounding box in user coordinates covering the area that
+ * would be affected, (the "inked" area), by a cairo_stroke()
+ * operation given the current path and stroke parameters.
+ * If the current path is empty, returns an empty rectangle ((0,0), (0,0)).
+ * Surface dimensions and clipping are not taken into account.
+ *
+ * Note that if the line width is set to exactly zero, then
+ * cairo_stroke_extents() will return an empty rectangle. Contrast with
+ * cairo_path_extents() which can be used to compute the non-empty
+ * bounds as the line width approaches zero.
+ *
+ * Note that cairo_stroke_extents() must necessarily do more work to
+ * compute the precise inked areas in light of the stroke parameters,
+ * so cairo_path_extents() may be more desirable for sake of
+ * performance if non-inked path extents are desired.
+ *
+ * See cairo_stroke(), cairo_set_line_width(), cairo_set_line_join(),
+ * cairo_set_line_cap(), cairo_set_dash(), and
+ * cairo_stroke_preserve().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_stroke_extents (cairo_t *cr,
+                      double *x1, double *y1, double *x2, double *y2)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status)) {
+	if (x1)
+	    *x1 = 0.0;
+	if (y1)
+	    *y1 = 0.0;
+	if (x2)
+	    *x2 = 0.0;
+	if (y2)
+	    *y2 = 0.0;
+
+	return;
+    }
+
+    status = cr->backend->stroke_extents (cr, x1, y1, x2, y2);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_fill_extents:
+ * @cr: a cairo context
+ * @x1: left of the resulting extents
+ * @y1: top of the resulting extents
+ * @x2: right of the resulting extents
+ * @y2: bottom of the resulting extents
+ *
+ * Computes a bounding box in user coordinates covering the area that
+ * would be affected, (the "inked" area), by a cairo_fill() operation
+ * given the current path and fill parameters. If the current path is
+ * empty, returns an empty rectangle ((0,0), (0,0)). Surface
+ * dimensions and clipping are not taken into account.
+ *
+ * Contrast with cairo_path_extents(), which is similar, but returns
+ * non-zero extents for some paths with no inked area, (such as a
+ * simple line segment).
+ *
+ * Note that cairo_fill_extents() must necessarily do more work to
+ * compute the precise inked areas in light of the fill rule, so
+ * cairo_path_extents() may be more desirable for sake of performance
+ * if the non-inked path extents are desired.
+ *
+ * See cairo_fill(), cairo_set_fill_rule() and cairo_fill_preserve().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_fill_extents (cairo_t *cr,
+                    double *x1, double *y1, double *x2, double *y2)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status)) {
+	if (x1)
+	    *x1 = 0.0;
+	if (y1)
+	    *y1 = 0.0;
+	if (x2)
+	    *x2 = 0.0;
+	if (y2)
+	    *y2 = 0.0;
+
+	return;
+    }
+
+    status = cr->backend->fill_extents (cr, x1, y1, x2, y2);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_clip:
+ * @cr: a cairo context
+ *
+ * Establishes a new clip region by intersecting the current clip
+ * region with the current path as it would be filled by cairo_fill()
+ * and according to the current fill rule (see cairo_set_fill_rule()).
+ *
+ * After cairo_clip(), the current path will be cleared from the cairo
+ * context.
+ *
+ * The current clip region affects all drawing operations by
+ * effectively masking out any changes to the surface that are outside
+ * the current clip region.
+ *
+ * Calling cairo_clip() can only make the clip region smaller, never
+ * larger. But the current clip is part of the graphics state, so a
+ * temporary restriction of the clip region can be achieved by
+ * calling cairo_clip() within a cairo_save()/cairo_restore()
+ * pair. The only other means of increasing the size of the clip
+ * region is cairo_reset_clip().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_clip (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->clip (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_clip_preserve:
+ * @cr: a cairo context
+ *
+ * Establishes a new clip region by intersecting the current clip
+ * region with the current path as it would be filled by cairo_fill()
+ * and according to the current fill rule (see cairo_set_fill_rule()).
+ *
+ * Unlike cairo_clip(), cairo_clip_preserve() preserves the path within
+ * the cairo context.
+ *
+ * The current clip region affects all drawing operations by
+ * effectively masking out any changes to the surface that are outside
+ * the current clip region.
+ *
+ * Calling cairo_clip_preserve() can only make the clip region smaller, never
+ * larger. But the current clip is part of the graphics state, so a
+ * temporary restriction of the clip region can be achieved by
+ * calling cairo_clip_preserve() within a cairo_save()/cairo_restore()
+ * pair. The only other means of increasing the size of the clip
+ * region is cairo_reset_clip().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_clip_preserve (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->clip_preserve (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def(cairo_clip_preserve);
+
+/**
+ * cairo_reset_clip:
+ * @cr: a cairo context
+ *
+ * Reset the current clip region to its original, unrestricted
+ * state. That is, set the clip region to an infinitely large shape
+ * containing the target surface. Equivalently, if infinity is too
+ * hard to grasp, one can imagine the clip region being reset to the
+ * exact bounds of the target surface.
+ *
+ * Note that code meant to be reusable should not call
+ * cairo_reset_clip() as it will cause results unexpected by
+ * higher-level code which calls cairo_clip(). Consider using
+ * cairo_save() and cairo_restore() around cairo_clip() as a more
+ * robust means of temporarily restricting the clip region.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_reset_clip (cairo_t *cr)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->reset_clip (cr);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_clip_extents:
+ * @cr: a cairo context
+ * @x1: left of the resulting extents
+ * @y1: top of the resulting extents
+ * @x2: right of the resulting extents
+ * @y2: bottom of the resulting extents
+ *
+ * Computes a bounding box in user coordinates covering the area inside the
+ * current clip.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_clip_extents (cairo_t *cr,
+		    double *x1, double *y1,
+		    double *x2, double *y2)
+{
+    cairo_status_t status;
+
+    if (x1)
+	*x1 = 0.0;
+    if (y1)
+	*y1 = 0.0;
+    if (x2)
+	*x2 = 0.0;
+    if (y2)
+	*y2 = 0.0;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->clip_extents (cr, x1, y1, x2, y2);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_in_clip:
+ * @cr: a cairo context
+ * @x: X coordinate of the point to test
+ * @y: Y coordinate of the point to test
+ *
+ * Tests whether the given point is inside the area that would be
+ * visible through the current clip, i.e. the area that would be filled by
+ * a cairo_paint() operation.
+ *
+ * See cairo_clip(), and cairo_clip_preserve().
+ *
+ * Return value: A non-zero value if the point is inside, or zero if
+ * outside.
+ *
+ * Since: 1.10
+ **/
+cairo_bool_t
+cairo_in_clip (cairo_t *cr, double x, double y)
+{
+    cairo_status_t status;
+    cairo_bool_t inside = FALSE;
+
+    if (unlikely (cr->status))
+	return FALSE;
+
+    status = cr->backend->in_clip (cr, x, y, &inside);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+
+    return inside;
+}
+
+/**
+ * cairo_copy_clip_rectangle_list:
+ * @cr: a cairo context
+ *
+ * Gets the current clip region as a list of rectangles in user coordinates.
+ * Never returns %NULL.
+ *
+ * The status in the list may be %CAIRO_STATUS_CLIP_NOT_REPRESENTABLE to
+ * indicate that the clip region cannot be represented as a list of
+ * user-space rectangles. The status may have other values to indicate
+ * other errors.
+ *
+ * Returns: the current clip region as a list of rectangles in user coordinates,
+ * which should be destroyed using cairo_rectangle_list_destroy().
+ *
+ * Since: 1.4
+ **/
+cairo_rectangle_list_t *
+cairo_copy_clip_rectangle_list (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return _cairo_rectangle_list_create_in_error (cr->status);
+
+    return cr->backend->clip_copy_rectangle_list (cr);
+}
+
+/**
+ * CAIRO_TAG_DEST:
+ *
+ * Create a destination for a hyperlink. Destination tag attributes
+ * are detailed at [Destinations][dests].
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * CAIRO_TAG_LINK:
+ *
+ * Create hyperlink. Link tag attributes are detailed at
+ * [Links][links].
+ *
+ * Since: 1.16
+ **/
+
+/**
+ * cairo_tag_begin:
+ * @cr: a cairo context
+ * @tag_name: tag name
+ * @attributes: tag attributes
+ *
+ * Marks the beginning of the @tag_name structure. Call
+ * cairo_tag_end() with the same @tag_name to mark the end of the
+ * structure.
+ *
+ * The attributes string is of the form "key1=value2 key2=value2 ...".
+ * Values may be boolean (true/false or 1/0), integer, float, string,
+ * or an array.
+ *
+ * String values are enclosed in single quotes
+ * ('). Single quotes and backslashes inside the string should be
+ * escaped with a backslash.
+ *
+ * Boolean values may be set to true by only
+ * specifying the key. eg the attribute string "key" is the equivalent
+ * to "key=true".
+ *
+ * Arrays are enclosed in '[]'. eg "rect=[1.2 4.3 2.0 3.0]".
+ *
+ * If no attributes are required, @attributes can be an empty string or NULL.
+ *
+ * See [Tags and Links Description][cairo-Tags-and-Links.description]
+ * for the list of tags and attributes.
+ *
+ * Invalid nesting of tags or invalid attributes will cause @cr to
+ * shutdown with a status of %CAIRO_STATUS_TAG_ERROR.
+ *
+ * See cairo_tag_end().
+ *
+ * Since: 1.16
+ **/
+void
+cairo_tag_begin (cairo_t *cr, const char *tag_name, const char *attributes)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->tag_begin (cr, tag_name, attributes);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_tag_end:
+ * @cr: a cairo context
+ * @tag_name: tag name
+ *
+ * Marks the end of the @tag_name structure.
+ *
+ * Invalid nesting of tags will cause @cr to shutdown with a status of
+ * %CAIRO_STATUS_TAG_ERROR.
+ *
+ * See cairo_tag_begin().
+ *
+ * Since: 1.16
+ **/
+cairo_public void
+cairo_tag_end (cairo_t *cr, const char *tag_name)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->tag_end (cr, tag_name);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_select_font_face:
+ * @cr: a #cairo_t
+ * @family: a font family name, encoded in UTF-8
+ * @slant: the slant for the font
+ * @weight: the weight for the font
+ *
+ * Note: The cairo_select_font_face() function call is part of what
+ * the cairo designers call the "toy" text API. It is convenient for
+ * short demos and simple programs, but it is not expected to be
+ * adequate for serious text-using applications.
+ *
+ * Selects a family and style of font from a simplified description as
+ * a family name, slant and weight. Cairo provides no operation to
+ * list available family names on the system (this is a "toy",
+ * remember), but the standard CSS2 generic family names, ("serif",
+ * "sans-serif", "cursive", "fantasy", "monospace"), are likely to
+ * work as expected.
+ *
+ * If @family starts with the string "@cairo:", or if no native font
+ * backends are compiled in, cairo will use an internal font family.
+ * The internal font family recognizes many modifiers in the @family
+ * string, most notably, it recognizes the string "monospace".  That is,
+ * the family name "@cairo:monospace" will use the monospace version of
+ * the internal font family.
+ *
+ * For "real" font selection, see the font-backend-specific
+ * font_face_create functions for the font backend you are using. (For
+ * example, if you are using the freetype-based cairo-ft font backend,
+ * see cairo_ft_font_face_create_for_ft_face() or
+ * cairo_ft_font_face_create_for_pattern().) The resulting font face
+ * could then be used with cairo_scaled_font_create() and
+ * cairo_set_scaled_font().
+ *
+ * Similarly, when using the "real" font support, you can call
+ * directly into the underlying font system, (such as fontconfig or
+ * freetype), for operations such as listing available fonts, etc.
+ *
+ * It is expected that most applications will need to use a more
+ * comprehensive font handling and text layout library, (for example,
+ * pango), in conjunction with cairo.
+ *
+ * If text is drawn without a call to cairo_select_font_face(), (nor
+ * cairo_set_font_face() nor cairo_set_scaled_font()), the default
+ * family is platform-specific, but is essentially "sans-serif".
+ * Default slant is %CAIRO_FONT_SLANT_NORMAL, and default weight is
+ * %CAIRO_FONT_WEIGHT_NORMAL.
+ *
+ * This function is equivalent to a call to cairo_toy_font_face_create()
+ * followed by cairo_set_font_face().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_select_font_face (cairo_t              *cr,
+			const char           *family,
+			cairo_font_slant_t    slant,
+			cairo_font_weight_t   weight)
+{
+    cairo_font_face_t *font_face;
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    font_face = cairo_toy_font_face_create (family, slant, weight);
+    if (unlikely (font_face->status)) {
+	_cairo_set_error (cr, font_face->status);
+	return;
+    }
+
+    status = cr->backend->set_font_face (cr, font_face);
+    cairo_font_face_destroy (font_face);
+
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_font_extents:
+ * @cr: a #cairo_t
+ * @extents: a #cairo_font_extents_t object into which the results
+ * will be stored.
+ *
+ * Gets the font extents for the currently selected font.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_font_extents (cairo_t              *cr,
+		    cairo_font_extents_t *extents)
+{
+    cairo_status_t status;
+
+    extents->ascent = 0.0;
+    extents->descent = 0.0;
+    extents->height = 0.0;
+    extents->max_x_advance = 0.0;
+    extents->max_y_advance = 0.0;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->font_extents (cr, extents);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_set_font_face:
+ * @cr: a #cairo_t
+ * @font_face: a #cairo_font_face_t, or %NULL to restore to the default font
+ *
+ * Replaces the current #cairo_font_face_t object in the #cairo_t with
+ * @font_face. The replaced font face in the #cairo_t will be
+ * destroyed if there are no other references to it.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_font_face (cairo_t           *cr,
+		     cairo_font_face_t *font_face)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_font_face (cr, font_face);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_get_font_face:
+ * @cr: a #cairo_t
+ *
+ * Gets the current font face for a #cairo_t.
+ *
+ * Return value: the current font face.  This object is owned by
+ * cairo. To keep a reference to it, you must call
+ * cairo_font_face_reference().
+ *
+ * This function never returns %NULL. If memory cannot be allocated, a
+ * special "nil" #cairo_font_face_t object will be returned on which
+ * cairo_font_face_status() returns %CAIRO_STATUS_NO_MEMORY. Using
+ * this nil object will cause its error state to propagate to other
+ * objects it is passed to, (for example, calling
+ * cairo_set_font_face() with a nil font will trigger an error that
+ * will shutdown the #cairo_t object).
+ *
+ * Since: 1.0
+ **/
+cairo_font_face_t *
+cairo_get_font_face (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return (cairo_font_face_t*) &_cairo_font_face_nil;
+
+    return cr->backend->get_font_face (cr);
+}
+
+/**
+ * cairo_set_font_size:
+ * @cr: a #cairo_t
+ * @size: the new font size, in user space units
+ *
+ * Sets the current font matrix to a scale by a factor of @size, replacing
+ * any font matrix previously set with cairo_set_font_size() or
+ * cairo_set_font_matrix(). This results in a font size of @size user space
+ * units. (More precisely, this matrix will result in the font's
+ * em-square being a @size by @size square in user space.)
+ *
+ * If text is drawn without a call to cairo_set_font_size(), (nor
+ * cairo_set_font_matrix() nor cairo_set_scaled_font()), the default
+ * font size is 10.0.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_font_size (cairo_t *cr, double size)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_font_size (cr, size);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_font_size);
+
+/**
+ * cairo_set_font_matrix:
+ * @cr: a #cairo_t
+ * @matrix: a #cairo_matrix_t describing a transform to be applied to
+ * the current font.
+ *
+ * Sets the current font matrix to @matrix. The font matrix gives a
+ * transformation from the design space of the font (in this space,
+ * the em-square is 1 unit by 1 unit) to user space. Normally, a
+ * simple scale is used (see cairo_set_font_size()), but a more
+ * complex font matrix can be used to shear the font
+ * or stretch it unequally along the two axes
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_font_matrix (cairo_t		    *cr,
+		       const cairo_matrix_t *matrix)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cr->backend->set_font_matrix (cr, matrix);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_font_matrix);
+
+/**
+ * cairo_get_font_matrix:
+ * @cr: a #cairo_t
+ * @matrix: return value for the matrix
+ *
+ * Stores the current font matrix into @matrix. See
+ * cairo_set_font_matrix().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_get_font_matrix (cairo_t *cr, cairo_matrix_t *matrix)
+{
+    if (unlikely (cr->status)) {
+	cairo_matrix_init_identity (matrix);
+	return;
+    }
+
+    cr->backend->get_font_matrix (cr, matrix);
+}
+
+/**
+ * cairo_set_font_options:
+ * @cr: a #cairo_t
+ * @options: font options to use
+ *
+ * Sets a set of custom font rendering options for the #cairo_t.
+ * Rendering options are derived by merging these options with the
+ * options derived from underlying surface; if the value in @options
+ * has a default value (like %CAIRO_ANTIALIAS_DEFAULT), then the value
+ * from the surface is used.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_set_font_options (cairo_t                    *cr,
+			const cairo_font_options_t *options)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    status = cairo_font_options_status ((cairo_font_options_t *) options);
+    if (unlikely (status)) {
+	_cairo_set_error (cr, status);
+	return;
+    }
+
+    status = cr->backend->set_font_options (cr, options);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+slim_hidden_def (cairo_set_font_options);
+
+/**
+ * cairo_get_font_options:
+ * @cr: a #cairo_t
+ * @options: a #cairo_font_options_t object into which to store
+ *   the retrieved options. All existing values are overwritten
+ *
+ * Retrieves font rendering options set via #cairo_set_font_options.
+ * Note that the returned options do not include any options derived
+ * from the underlying surface; they are literally the options
+ * passed to cairo_set_font_options().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_get_font_options (cairo_t              *cr,
+			cairo_font_options_t *options)
+{
+    /* check that we aren't trying to overwrite the nil object */
+    if (cairo_font_options_status (options))
+	return;
+
+    if (unlikely (cr->status)) {
+	_cairo_font_options_init_default (options);
+	return;
+    }
+
+    cr->backend->get_font_options (cr, options);
+}
+
+/**
+ * cairo_set_scaled_font:
+ * @cr: a #cairo_t
+ * @scaled_font: a #cairo_scaled_font_t
+ *
+ * Replaces the current font face, font matrix, and font options in
+ * the #cairo_t with those of the #cairo_scaled_font_t.  Except for
+ * some translation, the current CTM of the #cairo_t should be the
+ * same as that of the #cairo_scaled_font_t, which can be accessed
+ * using cairo_scaled_font_get_ctm().
+ *
+ * Since: 1.2
+ **/
+void
+cairo_set_scaled_font (cairo_t                   *cr,
+		       const cairo_scaled_font_t *scaled_font)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if ((scaled_font == NULL)) {
+	_cairo_set_error (cr, _cairo_error (CAIRO_STATUS_NULL_POINTER));
+	return;
+    }
+
+    status = scaled_font->status;
+    if (unlikely (status)) {
+	_cairo_set_error (cr, status);
+	return;
+    }
+
+    status = cr->backend->set_scaled_font (cr, (cairo_scaled_font_t *) scaled_font);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_get_scaled_font:
+ * @cr: a #cairo_t
+ *
+ * Gets the current scaled font for a #cairo_t.
+ *
+ * Return value: the current scaled font. This object is owned by
+ * cairo. To keep a reference to it, you must call
+ * cairo_scaled_font_reference().
+ *
+ * This function never returns %NULL. If memory cannot be allocated, a
+ * special "nil" #cairo_scaled_font_t object will be returned on which
+ * cairo_scaled_font_status() returns %CAIRO_STATUS_NO_MEMORY. Using
+ * this nil object will cause its error state to propagate to other
+ * objects it is passed to, (for example, calling
+ * cairo_set_scaled_font() with a nil font will trigger an error that
+ * will shutdown the #cairo_t object).
+ *
+ * Since: 1.4
+ **/
+cairo_scaled_font_t *
+cairo_get_scaled_font (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return _cairo_scaled_font_create_in_error (cr->status);
+
+    return cr->backend->get_scaled_font (cr);
+}
+slim_hidden_def (cairo_get_scaled_font);
+
+/**
+ * cairo_text_extents:
+ * @cr: a #cairo_t
+ * @utf8: a NUL-terminated string of text encoded in UTF-8, or %NULL
+ * @extents: a #cairo_text_extents_t object into which the results
+ * will be stored
+ *
+ * Gets the extents for a string of text. The extents describe a
+ * user-space rectangle that encloses the "inked" portion of the text,
+ * (as it would be drawn by cairo_show_text()). Additionally, the
+ * x_advance and y_advance values indicate the amount by which the
+ * current point would be advanced by cairo_show_text().
+ *
+ * Note that whitespace characters do not directly contribute to the
+ * size of the rectangle (extents.width and extents.height). They do
+ * contribute indirectly by changing the position of non-whitespace
+ * characters. In particular, trailing whitespace characters are
+ * likely to not affect the size of the rectangle, though they will
+ * affect the x_advance and y_advance values.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_text_extents (cairo_t              *cr,
+		    const char		 *utf8,
+		    cairo_text_extents_t *extents)
+{
+    cairo_status_t status;
+    cairo_scaled_font_t *scaled_font;
+    cairo_glyph_t *glyphs = NULL;
+    int num_glyphs = 0;
+    double x, y;
+
+    extents->x_bearing = 0.0;
+    extents->y_bearing = 0.0;
+    extents->width  = 0.0;
+    extents->height = 0.0;
+    extents->x_advance = 0.0;
+    extents->y_advance = 0.0;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (utf8 == NULL)
+	return;
+
+    scaled_font = cairo_get_scaled_font (cr);
+    if (unlikely (scaled_font->status)) {
+	_cairo_set_error (cr, scaled_font->status);
+	return;
+    }
+
+    cairo_get_current_point (cr, &x, &y);
+    status = cairo_scaled_font_text_to_glyphs (scaled_font,
+					       x, y,
+					       utf8, -1,
+					       &glyphs, &num_glyphs,
+					       NULL, NULL, NULL);
+
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status = cr->backend->glyph_extents (cr,
+					     glyphs, num_glyphs,
+					     extents);
+    }
+    cairo_glyph_free (glyphs);
+
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_glyph_extents:
+ * @cr: a #cairo_t
+ * @glyphs: an array of #cairo_glyph_t objects
+ * @num_glyphs: the number of elements in @glyphs
+ * @extents: a #cairo_text_extents_t object into which the results
+ * will be stored
+ *
+ * Gets the extents for an array of glyphs. The extents describe a
+ * user-space rectangle that encloses the "inked" portion of the
+ * glyphs, (as they would be drawn by cairo_show_glyphs()).
+ * Additionally, the x_advance and y_advance values indicate the
+ * amount by which the current point would be advanced by
+ * cairo_show_glyphs().
+ *
+ * Note that whitespace glyphs do not contribute to the size of the
+ * rectangle (extents.width and extents.height).
+ *
+ * Since: 1.0
+ **/
+void
+cairo_glyph_extents (cairo_t                *cr,
+		     const cairo_glyph_t    *glyphs,
+		     int                    num_glyphs,
+		     cairo_text_extents_t   *extents)
+{
+    cairo_status_t status;
+
+    extents->x_bearing = 0.0;
+    extents->y_bearing = 0.0;
+    extents->width  = 0.0;
+    extents->height = 0.0;
+    extents->x_advance = 0.0;
+    extents->y_advance = 0.0;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (num_glyphs == 0)
+	return;
+
+    if (unlikely (num_glyphs < 0)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT);
+	return;
+    }
+
+    if (unlikely (glyphs == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    status = cr->backend->glyph_extents (cr, glyphs, num_glyphs, extents);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_show_text:
+ * @cr: a cairo context
+ * @utf8: a NUL-terminated string of text encoded in UTF-8, or %NULL
+ *
+ * A drawing operator that generates the shape from a string of UTF-8
+ * characters, rendered according to the current font_face, font_size
+ * (font_matrix), and font_options.
+ *
+ * This function first computes a set of glyphs for the string of
+ * text. The first glyph is placed so that its origin is at the
+ * current point. The origin of each subsequent glyph is offset from
+ * that of the previous glyph by the advance values of the previous
+ * glyph.
+ *
+ * After this call the current point is moved to the origin of where
+ * the next glyph would be placed in this same progression. That is,
+ * the current point will be at the origin of the final glyph offset
+ * by its advance values. This allows for easy display of a single
+ * logical string with multiple calls to cairo_show_text().
+ *
+ * Note: The cairo_show_text() function call is part of what the cairo
+ * designers call the "toy" text API. It is convenient for short demos
+ * and simple programs, but it is not expected to be adequate for
+ * serious text-using applications. See cairo_show_glyphs() for the
+ * "real" text display API in cairo.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_show_text (cairo_t *cr, const char *utf8)
+{
+    cairo_text_extents_t extents;
+    cairo_status_t status;
+    cairo_glyph_t *glyphs, *last_glyph;
+    cairo_text_cluster_t *clusters;
+    int utf8_len, num_glyphs, num_clusters;
+    cairo_text_cluster_flags_t cluster_flags;
+    double x, y;
+    cairo_bool_t has_show_text_glyphs;
+    cairo_glyph_t stack_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)];
+    cairo_text_cluster_t stack_clusters[CAIRO_STACK_ARRAY_LENGTH (cairo_text_cluster_t)];
+    cairo_scaled_font_t *scaled_font;
+    cairo_glyph_text_info_t info, *i;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (utf8 == NULL)
+	return;
+
+    scaled_font = cairo_get_scaled_font (cr);
+    if (unlikely (scaled_font->status)) {
+	_cairo_set_error (cr, scaled_font->status);
+	return;
+    }
+
+    utf8_len = strlen (utf8);
+
+    has_show_text_glyphs =
+	cairo_surface_has_show_text_glyphs (cairo_get_target (cr));
+
+    glyphs = stack_glyphs;
+    num_glyphs = ARRAY_LENGTH (stack_glyphs);
+
+    if (has_show_text_glyphs) {
+	clusters = stack_clusters;
+	num_clusters = ARRAY_LENGTH (stack_clusters);
+    } else {
+	clusters = NULL;
+	num_clusters = 0;
+    }
+
+    cairo_get_current_point (cr, &x, &y);
+    status = cairo_scaled_font_text_to_glyphs (scaled_font,
+					       x, y,
+					       utf8, utf8_len,
+					       &glyphs, &num_glyphs,
+					       has_show_text_glyphs ? &clusters : NULL, &num_clusters,
+					       &cluster_flags);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (num_glyphs == 0)
+	return;
+
+    i = NULL;
+    if (has_show_text_glyphs) {
+	info.utf8 = utf8;
+	info.utf8_len = utf8_len;
+	info.clusters = clusters;
+	info.num_clusters = num_clusters;
+	info.cluster_flags = cluster_flags;
+	i = &info;
+    }
+
+    status = cr->backend->glyphs (cr, glyphs, num_glyphs, i);
+    if (unlikely (status))
+	goto BAIL;
+
+    last_glyph = &glyphs[num_glyphs - 1];
+    status = cr->backend->glyph_extents (cr, last_glyph, 1, &extents);
+    if (unlikely (status))
+	goto BAIL;
+
+    x = last_glyph->x + extents.x_advance;
+    y = last_glyph->y + extents.y_advance;
+    cr->backend->move_to (cr, x, y);
+
+ BAIL:
+    if (glyphs != stack_glyphs)
+	cairo_glyph_free (glyphs);
+    if (clusters != stack_clusters)
+	cairo_text_cluster_free (clusters);
+
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_show_glyphs:
+ * @cr: a cairo context
+ * @glyphs: array of glyphs to show
+ * @num_glyphs: number of glyphs to show
+ *
+ * A drawing operator that generates the shape from an array of glyphs,
+ * rendered according to the current font face, font size
+ * (font matrix), and font options.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_show_glyphs (cairo_t *cr, const cairo_glyph_t *glyphs, int num_glyphs)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (num_glyphs == 0)
+	return;
+
+    if (num_glyphs < 0) {
+	_cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT);
+	return;
+    }
+
+    if (glyphs == NULL) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    status = cr->backend->glyphs (cr, glyphs, num_glyphs, NULL);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_show_text_glyphs:
+ * @cr: a cairo context
+ * @utf8: a string of text encoded in UTF-8
+ * @utf8_len: length of @utf8 in bytes, or -1 if it is NUL-terminated
+ * @glyphs: array of glyphs to show
+ * @num_glyphs: number of glyphs to show
+ * @clusters: array of cluster mapping information
+ * @num_clusters: number of clusters in the mapping
+ * @cluster_flags: cluster mapping flags
+ *
+ * This operation has rendering effects similar to cairo_show_glyphs()
+ * but, if the target surface supports it, uses the provided text and
+ * cluster mapping to embed the text for the glyphs shown in the output.
+ * If the target does not support the extended attributes, this function
+ * acts like the basic cairo_show_glyphs() as if it had been passed
+ * @glyphs and @num_glyphs.
+ *
+ * The mapping between @utf8 and @glyphs is provided by an array of
+ * <firstterm>clusters</firstterm>.  Each cluster covers a number of
+ * text bytes and glyphs, and neighboring clusters cover neighboring
+ * areas of @utf8 and @glyphs.  The clusters should collectively cover @utf8
+ * and @glyphs in entirety.
+ *
+ * The first cluster always covers bytes from the beginning of @utf8.
+ * If @cluster_flags do not have the %CAIRO_TEXT_CLUSTER_FLAG_BACKWARD
+ * set, the first cluster also covers the beginning
+ * of @glyphs, otherwise it covers the end of the @glyphs array and
+ * following clusters move backward.
+ *
+ * See #cairo_text_cluster_t for constraints on valid clusters.
+ *
+ * Since: 1.8
+ **/
+void
+cairo_show_text_glyphs (cairo_t			   *cr,
+			const char		   *utf8,
+			int			    utf8_len,
+			const cairo_glyph_t	   *glyphs,
+			int			    num_glyphs,
+			const cairo_text_cluster_t *clusters,
+			int			    num_clusters,
+			cairo_text_cluster_flags_t  cluster_flags)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    /* A slew of sanity checks */
+
+    /* Special case for NULL and -1 */
+    if (utf8 == NULL && utf8_len == -1)
+	utf8_len = 0;
+
+    /* No NULLs for non-zeros */
+    if ((num_glyphs   && glyphs   == NULL) ||
+	(utf8_len     && utf8     == NULL) ||
+	(num_clusters && clusters == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    /* A -1 for utf8_len means NUL-terminated */
+    if (utf8_len == -1)
+	utf8_len = strlen (utf8);
+
+    /* Apart from that, no negatives */
+    if (num_glyphs < 0 || utf8_len < 0 || num_clusters < 0) {
+	_cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT);
+	return;
+    }
+
+    if (num_glyphs == 0 && utf8_len == 0)
+	return;
+
+    if (utf8) {
+	/* Make sure clusters cover the entire glyphs and utf8 arrays,
+	 * and that cluster boundaries are UTF-8 boundaries. */
+	status = _cairo_validate_text_clusters (utf8, utf8_len,
+						glyphs, num_glyphs,
+						clusters, num_clusters, cluster_flags);
+	if (status == CAIRO_STATUS_INVALID_CLUSTERS) {
+	    /* Either got invalid UTF-8 text, or cluster mapping is bad.
+	     * Differentiate those. */
+
+	    cairo_status_t status2;
+
+	    status2 = _cairo_utf8_to_ucs4 (utf8, utf8_len, NULL, NULL);
+	    if (status2)
+		status = status2;
+	} else {
+	    cairo_glyph_text_info_t info;
+
+	    info.utf8 = utf8;
+	    info.utf8_len = utf8_len;
+	    info.clusters = clusters;
+	    info.num_clusters = num_clusters;
+	    info.cluster_flags = cluster_flags;
+
+	    status = cr->backend->glyphs (cr, glyphs, num_glyphs, &info);
+	}
+    } else {
+	status = cr->backend->glyphs (cr, glyphs, num_glyphs, NULL);
+    }
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_text_path:
+ * @cr: a cairo context
+ * @utf8: a NUL-terminated string of text encoded in UTF-8, or %NULL
+ *
+ * Adds closed paths for text to the current path.  The generated
+ * path if filled, achieves an effect similar to that of
+ * cairo_show_text().
+ *
+ * Text conversion and positioning is done similar to cairo_show_text().
+ *
+ * Like cairo_show_text(), After this call the current point is
+ * moved to the origin of where the next glyph would be placed in
+ * this same progression.  That is, the current point will be at
+ * the origin of the final glyph offset by its advance values.
+ * This allows for chaining multiple calls to to cairo_text_path()
+ * without having to set current point in between.
+ *
+ * Note: The cairo_text_path() function call is part of what the cairo
+ * designers call the "toy" text API. It is convenient for short demos
+ * and simple programs, but it is not expected to be adequate for
+ * serious text-using applications. See cairo_glyph_path() for the
+ * "real" text path API in cairo.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_text_path (cairo_t *cr, const char *utf8)
+{
+    cairo_status_t status;
+    cairo_text_extents_t extents;
+    cairo_glyph_t stack_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)];
+    cairo_glyph_t *glyphs, *last_glyph;
+    cairo_scaled_font_t *scaled_font;
+    int num_glyphs;
+    double x, y;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (utf8 == NULL)
+	return;
+
+
+    glyphs = stack_glyphs;
+    num_glyphs = ARRAY_LENGTH (stack_glyphs);
+
+    scaled_font = cairo_get_scaled_font (cr);
+    if (unlikely (scaled_font->status)) {
+	_cairo_set_error (cr, scaled_font->status);
+	return;
+    }
+
+    cairo_get_current_point (cr, &x, &y);
+    status = cairo_scaled_font_text_to_glyphs (scaled_font,
+					       x, y,
+					       utf8, -1,
+					       &glyphs, &num_glyphs,
+					       NULL, NULL, NULL);
+
+    if (num_glyphs == 0)
+	return;
+
+    status = cr->backend->glyph_path (cr, glyphs, num_glyphs);
+
+    if (unlikely (status))
+	goto BAIL;
+
+    last_glyph = &glyphs[num_glyphs - 1];
+    status = cr->backend->glyph_extents (cr, last_glyph, 1, &extents);
+
+    if (unlikely (status))
+	goto BAIL;
+
+    x = last_glyph->x + extents.x_advance;
+    y = last_glyph->y + extents.y_advance;
+    cr->backend->move_to (cr, x, y);
+
+ BAIL:
+    if (glyphs != stack_glyphs)
+	cairo_glyph_free (glyphs);
+
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_glyph_path:
+ * @cr: a cairo context
+ * @glyphs: array of glyphs to show
+ * @num_glyphs: number of glyphs to show
+ *
+ * Adds closed paths for the glyphs to the current path.  The generated
+ * path if filled, achieves an effect similar to that of
+ * cairo_show_glyphs().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_glyph_path (cairo_t *cr, const cairo_glyph_t *glyphs, int num_glyphs)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (num_glyphs == 0)
+	return;
+
+    if (unlikely (num_glyphs < 0)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT);
+	return;
+    }
+
+    if (unlikely (glyphs == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    status = cr->backend->glyph_path (cr, glyphs, num_glyphs);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_get_operator:
+ * @cr: a cairo context
+ *
+ * Gets the current compositing operator for a cairo context.
+ *
+ * Return value: the current compositing operator.
+ *
+ * Since: 1.0
+ **/
+cairo_operator_t
+cairo_get_operator (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_OPERATOR_DEFAULT;
+
+    return cr->backend->get_operator (cr);
+}
+
+#if 0
+/**
+ * cairo_get_opacity:
+ * @cr: a cairo context
+ *
+ * Gets the current compositing opacity for a cairo context.
+ *
+ * Return value: the current compositing opacity.
+ *
+ * Since: TBD
+ **/
+double
+cairo_get_opacity (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return 1.;
+
+    return cr->backend->get_opacity (cr);
+}
+#endif
+
+/**
+ * cairo_get_tolerance:
+ * @cr: a cairo context
+ *
+ * Gets the current tolerance value, as set by cairo_set_tolerance().
+ *
+ * Return value: the current tolerance value.
+ *
+ * Since: 1.0
+ **/
+double
+cairo_get_tolerance (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_TOLERANCE_DEFAULT;
+
+    return cr->backend->get_tolerance (cr);
+}
+slim_hidden_def (cairo_get_tolerance);
+
+/**
+ * cairo_get_antialias:
+ * @cr: a cairo context
+ *
+ * Gets the current shape antialiasing mode, as set by
+ * cairo_set_antialias().
+ *
+ * Return value: the current shape antialiasing mode.
+ *
+ * Since: 1.0
+ **/
+cairo_antialias_t
+cairo_get_antialias (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_ANTIALIAS_DEFAULT;
+
+    return cr->backend->get_antialias (cr);
+}
+
+/**
+ * cairo_has_current_point:
+ * @cr: a cairo context
+ *
+ * Returns whether a current point is defined on the current path.
+ * See cairo_get_current_point() for details on the current point.
+ *
+ * Return value: whether a current point is defined.
+ *
+ * Since: 1.6
+ **/
+cairo_bool_t
+cairo_has_current_point (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return FALSE;
+
+    return cr->backend->has_current_point (cr);
+}
+
+/**
+ * cairo_get_current_point:
+ * @cr: a cairo context
+ * @x: return value for X coordinate of the current point
+ * @y: return value for Y coordinate of the current point
+ *
+ * Gets the current point of the current path, which is
+ * conceptually the final point reached by the path so far.
+ *
+ * The current point is returned in the user-space coordinate
+ * system. If there is no defined current point or if @cr is in an
+ * error status, @x and @y will both be set to 0.0. It is possible to
+ * check this in advance with cairo_has_current_point().
+ *
+ * Most path construction functions alter the current point. See the
+ * following for details on how they affect the current point:
+ * cairo_new_path(), cairo_new_sub_path(),
+ * cairo_append_path(), cairo_close_path(),
+ * cairo_move_to(), cairo_line_to(), cairo_curve_to(),
+ * cairo_rel_move_to(), cairo_rel_line_to(), cairo_rel_curve_to(),
+ * cairo_arc(), cairo_arc_negative(), cairo_rectangle(),
+ * cairo_text_path(), cairo_glyph_path(), cairo_stroke_to_path().
+ *
+ * Some functions use and alter the current point but do not
+ * otherwise change current path:
+ * cairo_show_text().
+ *
+ * Some functions unset the current path and as a result, current point:
+ * cairo_fill(), cairo_stroke().
+ *
+ * Since: 1.0
+ **/
+void
+cairo_get_current_point (cairo_t *cr, double *x_ret, double *y_ret)
+{
+    double x, y;
+
+    x = y = 0;
+    if (cr->status == CAIRO_STATUS_SUCCESS &&
+	cr->backend->has_current_point (cr))
+    {
+	cr->backend->get_current_point (cr, &x, &y);
+    }
+
+    if (x_ret)
+	*x_ret = x;
+    if (y_ret)
+	*y_ret = y;
+}
+slim_hidden_def(cairo_get_current_point);
+
+/**
+ * cairo_get_fill_rule:
+ * @cr: a cairo context
+ *
+ * Gets the current fill rule, as set by cairo_set_fill_rule().
+ *
+ * Return value: the current fill rule.
+ *
+ * Since: 1.0
+ **/
+cairo_fill_rule_t
+cairo_get_fill_rule (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_FILL_RULE_DEFAULT;
+
+    return cr->backend->get_fill_rule (cr);
+}
+
+/**
+ * cairo_get_line_width:
+ * @cr: a cairo context
+ *
+ * This function returns the current line width value exactly as set by
+ * cairo_set_line_width(). Note that the value is unchanged even if
+ * the CTM has changed between the calls to cairo_set_line_width() and
+ * cairo_get_line_width().
+ *
+ * Return value: the current line width.
+ *
+ * Since: 1.0
+ **/
+double
+cairo_get_line_width (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_LINE_WIDTH_DEFAULT;
+
+    return cr->backend->get_line_width (cr);
+}
+slim_hidden_def (cairo_get_line_width);
+
+/**
+ * cairo_get_line_cap:
+ * @cr: a cairo context
+ *
+ * Gets the current line cap style, as set by cairo_set_line_cap().
+ *
+ * Return value: the current line cap style.
+ *
+ * Since: 1.0
+ **/
+cairo_line_cap_t
+cairo_get_line_cap (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_LINE_CAP_DEFAULT;
+
+    return cr->backend->get_line_cap (cr);
+}
+
+/**
+ * cairo_get_line_join:
+ * @cr: a cairo context
+ *
+ * Gets the current line join style, as set by cairo_set_line_join().
+ *
+ * Return value: the current line join style.
+ *
+ * Since: 1.0
+ **/
+cairo_line_join_t
+cairo_get_line_join (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_LINE_JOIN_DEFAULT;
+
+    return cr->backend->get_line_join (cr);
+}
+
+/**
+ * cairo_get_miter_limit:
+ * @cr: a cairo context
+ *
+ * Gets the current miter limit, as set by cairo_set_miter_limit().
+ *
+ * Return value: the current miter limit.
+ *
+ * Since: 1.0
+ **/
+double
+cairo_get_miter_limit (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+        return CAIRO_GSTATE_MITER_LIMIT_DEFAULT;
+
+    return cr->backend->get_miter_limit (cr);
+}
+
+/**
+ * cairo_get_matrix:
+ * @cr: a cairo context
+ * @matrix: return value for the matrix
+ *
+ * Stores the current transformation matrix (CTM) into @matrix.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_get_matrix (cairo_t *cr, cairo_matrix_t *matrix)
+{
+    if (unlikely (cr->status)) {
+	cairo_matrix_init_identity (matrix);
+	return;
+    }
+
+    cr->backend->get_matrix (cr, matrix);
+}
+slim_hidden_def (cairo_get_matrix);
+
+/**
+ * cairo_get_target:
+ * @cr: a cairo context
+ *
+ * Gets the target surface for the cairo context as passed to
+ * cairo_create().
+ *
+ * This function will always return a valid pointer, but the result
+ * can be a "nil" surface if @cr is already in an error state,
+ * (ie. cairo_status() <literal>!=</literal> %CAIRO_STATUS_SUCCESS).
+ * A nil surface is indicated by cairo_surface_status()
+ * <literal>!=</literal> %CAIRO_STATUS_SUCCESS.
+ *
+ * Return value: the target surface. This object is owned by cairo. To
+ * keep a reference to it, you must call cairo_surface_reference().
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_get_target (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return _cairo_surface_create_in_error (cr->status);
+
+    return cr->backend->get_original_target (cr);
+}
+slim_hidden_def (cairo_get_target);
+
+/**
+ * cairo_get_group_target:
+ * @cr: a cairo context
+ *
+ * Gets the current destination surface for the context. This is either
+ * the original target surface as passed to cairo_create() or the target
+ * surface for the current group as started by the most recent call to
+ * cairo_push_group() or cairo_push_group_with_content().
+ *
+ * This function will always return a valid pointer, but the result
+ * can be a "nil" surface if @cr is already in an error state,
+ * (ie. cairo_status() <literal>!=</literal> %CAIRO_STATUS_SUCCESS).
+ * A nil surface is indicated by cairo_surface_status()
+ * <literal>!=</literal> %CAIRO_STATUS_SUCCESS.
+ *
+ * Return value: the target surface. This object is owned by cairo. To
+ * keep a reference to it, you must call cairo_surface_reference().
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_get_group_target (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return _cairo_surface_create_in_error (cr->status);
+
+    return cr->backend->get_current_target (cr);
+}
+
+/**
+ * cairo_copy_path:
+ * @cr: a cairo context
+ *
+ * Creates a copy of the current path and returns it to the user as a
+ * #cairo_path_t. See #cairo_path_data_t for hints on how to iterate
+ * over the returned data structure.
+ *
+ * This function will always return a valid pointer, but the result
+ * will have no data (<literal>data==%NULL</literal> and
+ * <literal>num_data==0</literal>), if either of the following
+ * conditions hold:
+ *
+ * <orderedlist>
+ * <listitem>If there is insufficient memory to copy the path. In this
+ *     case <literal>path->status</literal> will be set to
+ *     %CAIRO_STATUS_NO_MEMORY.</listitem>
+ * <listitem>If @cr is already in an error state. In this case
+ *    <literal>path->status</literal> will contain the same status that
+ *    would be returned by cairo_status().</listitem>
+ * </orderedlist>
+ *
+ * Return value: the copy of the current path. The caller owns the
+ * returned object and should call cairo_path_destroy() when finished
+ * with it.
+ *
+ * Since: 1.0
+ **/
+cairo_path_t *
+cairo_copy_path (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return _cairo_path_create_in_error (cr->status);
+
+    return cr->backend->copy_path (cr);
+}
+
+/**
+ * cairo_copy_path_flat:
+ * @cr: a cairo context
+ *
+ * Gets a flattened copy of the current path and returns it to the
+ * user as a #cairo_path_t. See #cairo_path_data_t for hints on
+ * how to iterate over the returned data structure.
+ *
+ * This function is like cairo_copy_path() except that any curves
+ * in the path will be approximated with piecewise-linear
+ * approximations, (accurate to within the current tolerance
+ * value). That is, the result is guaranteed to not have any elements
+ * of type %CAIRO_PATH_CURVE_TO which will instead be replaced by a
+ * series of %CAIRO_PATH_LINE_TO elements.
+ *
+ * This function will always return a valid pointer, but the result
+ * will have no data (<literal>data==%NULL</literal> and
+ * <literal>num_data==0</literal>), if either of the following
+ * conditions hold:
+ *
+ * <orderedlist>
+ * <listitem>If there is insufficient memory to copy the path. In this
+ *     case <literal>path->status</literal> will be set to
+ *     %CAIRO_STATUS_NO_MEMORY.</listitem>
+ * <listitem>If @cr is already in an error state. In this case
+ *    <literal>path->status</literal> will contain the same status that
+ *    would be returned by cairo_status().</listitem>
+ * </orderedlist>
+ *
+ * Return value: the copy of the current path. The caller owns the
+ * returned object and should call cairo_path_destroy() when finished
+ * with it.
+ *
+ * Since: 1.0
+ **/
+cairo_path_t *
+cairo_copy_path_flat (cairo_t *cr)
+{
+    if (unlikely (cr->status))
+	return _cairo_path_create_in_error (cr->status);
+
+    return cr->backend->copy_path_flat (cr);
+}
+
+/**
+ * cairo_append_path:
+ * @cr: a cairo context
+ * @path: path to be appended
+ *
+ * Append the @path onto the current path. The @path may be either the
+ * return value from one of cairo_copy_path() or
+ * cairo_copy_path_flat() or it may be constructed manually.  See
+ * #cairo_path_t for details on how the path data structure should be
+ * initialized, and note that <literal>path->status</literal> must be
+ * initialized to %CAIRO_STATUS_SUCCESS.
+ *
+ * Since: 1.0
+ **/
+void
+cairo_append_path (cairo_t		*cr,
+		   const cairo_path_t	*path)
+{
+    cairo_status_t status;
+
+    if (unlikely (cr->status))
+	return;
+
+    if (unlikely (path == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    if (unlikely (path->status)) {
+	if (path->status > CAIRO_STATUS_SUCCESS &&
+	    path->status <= CAIRO_STATUS_LAST_STATUS)
+	    _cairo_set_error (cr, path->status);
+	else
+	    _cairo_set_error (cr, CAIRO_STATUS_INVALID_STATUS);
+	return;
+    }
+
+    if (path->num_data == 0)
+	return;
+
+    if (unlikely (path->data == NULL)) {
+	_cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER);
+	return;
+    }
+
+    status = cr->backend->append_path (cr, path);
+    if (unlikely (status))
+	_cairo_set_error (cr, status);
+}
+
+/**
+ * cairo_status:
+ * @cr: a cairo context
+ *
+ * Checks whether an error has previously occurred for this context.
+ *
+ * Returns: the current status of this context, see #cairo_status_t
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_status (cairo_t *cr)
+{
+    return cr->status;
+}
+slim_hidden_def (cairo_status);
diff --git a/libs/cairo-1.16.0/src/cairo.h b/libs/cairo-1.16.0/src/cairo.h
new file mode 100644
index 0000000..3492bdc
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo.h
@@ -0,0 +1,3182 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+#ifndef CAIRO_H
+#define CAIRO_H
+
+#include "cairo-version.h"
+#include "cairo-features.h"
+#include "cairo-deprecated.h"
+
+#ifdef  __cplusplus
+# define CAIRO_BEGIN_DECLS  extern "C" {
+# define CAIRO_END_DECLS    }
+#else
+# define CAIRO_BEGIN_DECLS
+# define CAIRO_END_DECLS
+#endif
+
+#ifndef cairo_public
+# if defined (_MSC_VER) && ! defined (CAIRO_WIN32_STATIC_BUILD)
+#  define cairo_public __declspec(dllimport)
+# else
+#  define cairo_public
+# endif
+#endif
+
+CAIRO_BEGIN_DECLS
+
+#define CAIRO_VERSION_ENCODE(major, minor, micro) (	\
+	  ((major) * 10000)				\
+	+ ((minor) *   100)				\
+	+ ((micro) *     1))
+
+#define CAIRO_VERSION CAIRO_VERSION_ENCODE(	\
+	CAIRO_VERSION_MAJOR,			\
+	CAIRO_VERSION_MINOR,			\
+	CAIRO_VERSION_MICRO)
+
+
+#define CAIRO_VERSION_STRINGIZE_(major, minor, micro)	\
+	#major"."#minor"."#micro
+#define CAIRO_VERSION_STRINGIZE(major, minor, micro)	\
+	CAIRO_VERSION_STRINGIZE_(major, minor, micro)
+
+#define CAIRO_VERSION_STRING CAIRO_VERSION_STRINGIZE(	\
+	CAIRO_VERSION_MAJOR,				\
+	CAIRO_VERSION_MINOR,				\
+	CAIRO_VERSION_MICRO)
+
+
+cairo_public int
+cairo_version (void);
+
+cairo_public const char*
+cairo_version_string (void);
+
+/**
+ * cairo_bool_t:
+ *
+ * #cairo_bool_t is used for boolean values. Returns of type
+ * #cairo_bool_t will always be either 0 or 1, but testing against
+ * these values explicitly is not encouraged; just use the
+ * value as a boolean condition.
+ *
+ * <informalexample><programlisting>
+ *  if (cairo_in_stroke (cr, x, y)) {
+ *      /<!-- -->* do something *<!-- -->/
+ *  }
+ * </programlisting></informalexample>
+ *
+ * Since: 1.0
+ **/
+typedef int cairo_bool_t;
+
+/**
+ * cairo_t:
+ *
+ * A #cairo_t contains the current state of the rendering device,
+ * including coordinates of yet to be drawn shapes.
+ *
+ * Cairo contexts, as #cairo_t objects are named, are central to
+ * cairo and all drawing with cairo is always done to a #cairo_t
+ * object.
+ *
+ * Memory management of #cairo_t is done with
+ * cairo_reference() and cairo_destroy().
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo cairo_t;
+
+/**
+ * cairo_surface_t:
+ *
+ * A #cairo_surface_t represents an image, either as the destination
+ * of a drawing operation or as source when drawing onto another
+ * surface.  To draw to a #cairo_surface_t, create a cairo context
+ * with the surface as the target, using cairo_create().
+ *
+ * There are different subtypes of #cairo_surface_t for
+ * different drawing backends; for example, cairo_image_surface_create()
+ * creates a bitmap image in memory.
+ * The type of a surface can be queried with cairo_surface_get_type().
+ *
+ * The initial contents of a surface after creation depend upon the manner
+ * of its creation. If cairo creates the surface and backing storage for
+ * the user, it will be initially cleared; for example,
+ * cairo_image_surface_create() and cairo_surface_create_similar().
+ * Alternatively, if the user passes in a reference to some backing storage
+ * and asks cairo to wrap that in a #cairo_surface_t, then the contents are
+ * not modified; for example, cairo_image_surface_create_for_data() and
+ * cairo_xlib_surface_create().
+ *
+ * Memory management of #cairo_surface_t is done with
+ * cairo_surface_reference() and cairo_surface_destroy().
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_surface cairo_surface_t;
+
+/**
+ * cairo_device_t:
+ *
+ * A #cairo_device_t represents the driver interface for drawing
+ * operations to a #cairo_surface_t.  There are different subtypes of
+ * #cairo_device_t for different drawing backends; for example,
+ * cairo_egl_device_create() creates a device that wraps an EGL display and
+ * context.
+ *
+ * The type of a device can be queried with cairo_device_get_type().
+ *
+ * Memory management of #cairo_device_t is done with
+ * cairo_device_reference() and cairo_device_destroy().
+ *
+ * Since: 1.10
+ **/
+typedef struct _cairo_device cairo_device_t;
+
+/**
+ * cairo_matrix_t:
+ * @xx: xx component of the affine transformation
+ * @yx: yx component of the affine transformation
+ * @xy: xy component of the affine transformation
+ * @yy: yy component of the affine transformation
+ * @x0: X translation component of the affine transformation
+ * @y0: Y translation component of the affine transformation
+ *
+ * A #cairo_matrix_t holds an affine transformation, such as a scale,
+ * rotation, shear, or a combination of those. The transformation of
+ * a point (x, y) is given by:
+ * <programlisting>
+ *     x_new = xx * x + xy * y + x0;
+ *     y_new = yx * x + yy * y + y0;
+ * </programlisting>
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_matrix {
+    double xx; double yx;
+    double xy; double yy;
+    double x0; double y0;
+} cairo_matrix_t;
+
+/**
+ * cairo_pattern_t:
+ *
+ * A #cairo_pattern_t represents a source when drawing onto a
+ * surface. There are different subtypes of #cairo_pattern_t,
+ * for different types of sources; for example,
+ * cairo_pattern_create_rgb() creates a pattern for a solid
+ * opaque color.
+ *
+ * Other than various
+ * <function>cairo_pattern_create_<emphasis>type</emphasis>()</function>
+ * functions, some of the pattern types can be implicitly created using various
+ * <function>cairo_set_source_<emphasis>type</emphasis>()</function> functions;
+ * for example cairo_set_source_rgb().
+ *
+ * The type of a pattern can be queried with cairo_pattern_get_type().
+ *
+ * Memory management of #cairo_pattern_t is done with
+ * cairo_pattern_reference() and cairo_pattern_destroy().
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_pattern cairo_pattern_t;
+
+/**
+ * cairo_destroy_func_t:
+ * @data: The data element being destroyed.
+ *
+ * #cairo_destroy_func_t the type of function which is called when a
+ * data element is destroyed. It is passed the pointer to the data
+ * element and should free any memory and resources allocated for it.
+ *
+ * Since: 1.0
+ **/
+typedef void (*cairo_destroy_func_t) (void *data);
+
+/**
+ * cairo_user_data_key_t:
+ * @unused: not used; ignore.
+ *
+ * #cairo_user_data_key_t is used for attaching user data to cairo
+ * data structures.  The actual contents of the struct is never used,
+ * and there is no need to initialize the object; only the unique
+ * address of a #cairo_data_key_t object is used.  Typically, you
+ * would just use the address of a static #cairo_data_key_t object.
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_user_data_key {
+    int unused;
+} cairo_user_data_key_t;
+
+/**
+ * cairo_status_t:
+ * @CAIRO_STATUS_SUCCESS: no error has occurred (Since 1.0)
+ * @CAIRO_STATUS_NO_MEMORY: out of memory (Since 1.0)
+ * @CAIRO_STATUS_INVALID_RESTORE: cairo_restore() called without matching cairo_save() (Since 1.0)
+ * @CAIRO_STATUS_INVALID_POP_GROUP: no saved group to pop, i.e. cairo_pop_group() without matching cairo_push_group() (Since 1.0)
+ * @CAIRO_STATUS_NO_CURRENT_POINT: no current point defined (Since 1.0)
+ * @CAIRO_STATUS_INVALID_MATRIX: invalid matrix (not invertible) (Since 1.0)
+ * @CAIRO_STATUS_INVALID_STATUS: invalid value for an input #cairo_status_t (Since 1.0)
+ * @CAIRO_STATUS_NULL_POINTER: %NULL pointer (Since 1.0)
+ * @CAIRO_STATUS_INVALID_STRING: input string not valid UTF-8 (Since 1.0)
+ * @CAIRO_STATUS_INVALID_PATH_DATA: input path data not valid (Since 1.0)
+ * @CAIRO_STATUS_READ_ERROR: error while reading from input stream (Since 1.0)
+ * @CAIRO_STATUS_WRITE_ERROR: error while writing to output stream (Since 1.0)
+ * @CAIRO_STATUS_SURFACE_FINISHED: target surface has been finished (Since 1.0)
+ * @CAIRO_STATUS_SURFACE_TYPE_MISMATCH: the surface type is not appropriate for the operation (Since 1.0)
+ * @CAIRO_STATUS_PATTERN_TYPE_MISMATCH: the pattern type is not appropriate for the operation (Since 1.0)
+ * @CAIRO_STATUS_INVALID_CONTENT: invalid value for an input #cairo_content_t (Since 1.0)
+ * @CAIRO_STATUS_INVALID_FORMAT: invalid value for an input #cairo_format_t (Since 1.0)
+ * @CAIRO_STATUS_INVALID_VISUAL: invalid value for an input Visual* (Since 1.0)
+ * @CAIRO_STATUS_FILE_NOT_FOUND: file not found (Since 1.0)
+ * @CAIRO_STATUS_INVALID_DASH: invalid value for a dash setting (Since 1.0)
+ * @CAIRO_STATUS_INVALID_DSC_COMMENT: invalid value for a DSC comment (Since 1.2)
+ * @CAIRO_STATUS_INVALID_INDEX: invalid index passed to getter (Since 1.4)
+ * @CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: clip region not representable in desired format (Since 1.4)
+ * @CAIRO_STATUS_TEMP_FILE_ERROR: error creating or writing to a temporary file (Since 1.6)
+ * @CAIRO_STATUS_INVALID_STRIDE: invalid value for stride (Since 1.6)
+ * @CAIRO_STATUS_FONT_TYPE_MISMATCH: the font type is not appropriate for the operation (Since 1.8)
+ * @CAIRO_STATUS_USER_FONT_IMMUTABLE: the user-font is immutable (Since 1.8)
+ * @CAIRO_STATUS_USER_FONT_ERROR: error occurred in a user-font callback function (Since 1.8)
+ * @CAIRO_STATUS_NEGATIVE_COUNT: negative number used where it is not allowed (Since 1.8)
+ * @CAIRO_STATUS_INVALID_CLUSTERS: input clusters do not represent the accompanying text and glyph array (Since 1.8)
+ * @CAIRO_STATUS_INVALID_SLANT: invalid value for an input #cairo_font_slant_t (Since 1.8)
+ * @CAIRO_STATUS_INVALID_WEIGHT: invalid value for an input #cairo_font_weight_t (Since 1.8)
+ * @CAIRO_STATUS_INVALID_SIZE: invalid value (typically too big) for the size of the input (surface, pattern, etc.) (Since 1.10)
+ * @CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: user-font method not implemented (Since 1.10)
+ * @CAIRO_STATUS_DEVICE_TYPE_MISMATCH: the device type is not appropriate for the operation (Since 1.10)
+ * @CAIRO_STATUS_DEVICE_ERROR: an operation to the device caused an unspecified error (Since 1.10)
+ * @CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: a mesh pattern
+ *   construction operation was used outside of a
+ *   cairo_mesh_pattern_begin_patch()/cairo_mesh_pattern_end_patch()
+ *   pair (Since 1.12)
+ * @CAIRO_STATUS_DEVICE_FINISHED: target device has been finished (Since 1.12)
+ * @CAIRO_STATUS_JBIG2_GLOBAL_MISSING: %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID has been used on at least one image
+ *   but no image provided %CAIRO_MIME_TYPE_JBIG2_GLOBAL (Since 1.14)
+ * @CAIRO_STATUS_PNG_ERROR: error occurred in libpng while reading from or writing to a PNG file (Since 1.16)
+ * @CAIRO_STATUS_FREETYPE_ERROR: error occurred in libfreetype (Since 1.16)
+ * @CAIRO_STATUS_WIN32_GDI_ERROR: error occurred in the Windows Graphics Device Interface (Since 1.16)
+ * @CAIRO_STATUS_TAG_ERROR: invalid tag name, attributes, or nesting (Since 1.16)
+ * @CAIRO_STATUS_LAST_STATUS: this is a special value indicating the number of
+ *   status values defined in this enumeration.  When using this value, note
+ *   that the version of cairo at run-time may have additional status values
+ *   defined than the value of this symbol at compile-time. (Since 1.10)
+ *
+ * #cairo_status_t is used to indicate errors that can occur when
+ * using Cairo. In some cases it is returned directly by functions.
+ * but when using #cairo_t, the last error, if any, is stored in
+ * the context and can be retrieved with cairo_status().
+ *
+ * New entries may be added in future versions.  Use cairo_status_to_string()
+ * to get a human-readable representation of an error message.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_status {
+    CAIRO_STATUS_SUCCESS = 0,
+
+    CAIRO_STATUS_NO_MEMORY,
+    CAIRO_STATUS_INVALID_RESTORE,
+    CAIRO_STATUS_INVALID_POP_GROUP,
+    CAIRO_STATUS_NO_CURRENT_POINT,
+    CAIRO_STATUS_INVALID_MATRIX,
+    CAIRO_STATUS_INVALID_STATUS,
+    CAIRO_STATUS_NULL_POINTER,
+    CAIRO_STATUS_INVALID_STRING,
+    CAIRO_STATUS_INVALID_PATH_DATA,
+    CAIRO_STATUS_READ_ERROR,
+    CAIRO_STATUS_WRITE_ERROR,
+    CAIRO_STATUS_SURFACE_FINISHED,
+    CAIRO_STATUS_SURFACE_TYPE_MISMATCH,
+    CAIRO_STATUS_PATTERN_TYPE_MISMATCH,
+    CAIRO_STATUS_INVALID_CONTENT,
+    CAIRO_STATUS_INVALID_FORMAT,
+    CAIRO_STATUS_INVALID_VISUAL,
+    CAIRO_STATUS_FILE_NOT_FOUND,
+    CAIRO_STATUS_INVALID_DASH,
+    CAIRO_STATUS_INVALID_DSC_COMMENT,
+    CAIRO_STATUS_INVALID_INDEX,
+    CAIRO_STATUS_CLIP_NOT_REPRESENTABLE,
+    CAIRO_STATUS_TEMP_FILE_ERROR,
+    CAIRO_STATUS_INVALID_STRIDE,
+    CAIRO_STATUS_FONT_TYPE_MISMATCH,
+    CAIRO_STATUS_USER_FONT_IMMUTABLE,
+    CAIRO_STATUS_USER_FONT_ERROR,
+    CAIRO_STATUS_NEGATIVE_COUNT,
+    CAIRO_STATUS_INVALID_CLUSTERS,
+    CAIRO_STATUS_INVALID_SLANT,
+    CAIRO_STATUS_INVALID_WEIGHT,
+    CAIRO_STATUS_INVALID_SIZE,
+    CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED,
+    CAIRO_STATUS_DEVICE_TYPE_MISMATCH,
+    CAIRO_STATUS_DEVICE_ERROR,
+    CAIRO_STATUS_INVALID_MESH_CONSTRUCTION,
+    CAIRO_STATUS_DEVICE_FINISHED,
+    CAIRO_STATUS_JBIG2_GLOBAL_MISSING,
+    CAIRO_STATUS_PNG_ERROR,
+    CAIRO_STATUS_FREETYPE_ERROR,
+    CAIRO_STATUS_WIN32_GDI_ERROR,
+    CAIRO_STATUS_TAG_ERROR,
+
+    CAIRO_STATUS_LAST_STATUS
+} cairo_status_t;
+
+/**
+ * cairo_content_t:
+ * @CAIRO_CONTENT_COLOR: The surface will hold color content only. (Since 1.0)
+ * @CAIRO_CONTENT_ALPHA: The surface will hold alpha content only. (Since 1.0)
+ * @CAIRO_CONTENT_COLOR_ALPHA: The surface will hold color and alpha content. (Since 1.0)
+ *
+ * #cairo_content_t is used to describe the content that a surface will
+ * contain, whether color information, alpha information (translucence
+ * vs. opacity), or both.
+ *
+ * Note: The large values here are designed to keep #cairo_content_t
+ * values distinct from #cairo_format_t values so that the
+ * implementation can detect the error if users confuse the two types.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_content {
+    CAIRO_CONTENT_COLOR		= 0x1000,
+    CAIRO_CONTENT_ALPHA		= 0x2000,
+    CAIRO_CONTENT_COLOR_ALPHA	= 0x3000
+} cairo_content_t;
+
+/**
+ * cairo_format_t:
+ * @CAIRO_FORMAT_INVALID: no such format exists or is supported.
+ * @CAIRO_FORMAT_ARGB32: each pixel is a 32-bit quantity, with
+ *   alpha in the upper 8 bits, then red, then green, then blue.
+ *   The 32-bit quantities are stored native-endian. Pre-multiplied
+ *   alpha is used. (That is, 50% transparent red is 0x80800000,
+ *   not 0x80ff0000.) (Since 1.0)
+ * @CAIRO_FORMAT_RGB24: each pixel is a 32-bit quantity, with
+ *   the upper 8 bits unused. Red, Green, and Blue are stored
+ *   in the remaining 24 bits in that order. (Since 1.0)
+ * @CAIRO_FORMAT_A8: each pixel is a 8-bit quantity holding
+ *   an alpha value. (Since 1.0)
+ * @CAIRO_FORMAT_A1: each pixel is a 1-bit quantity holding
+ *   an alpha value. Pixels are packed together into 32-bit
+ *   quantities. The ordering of the bits matches the
+ *   endianness of the platform. On a big-endian machine, the
+ *   first pixel is in the uppermost bit, on a little-endian
+ *   machine the first pixel is in the least-significant bit. (Since 1.0)
+ * @CAIRO_FORMAT_RGB16_565: each pixel is a 16-bit quantity
+ *   with red in the upper 5 bits, then green in the middle
+ *   6 bits, and blue in the lower 5 bits. (Since 1.2)
+ * @CAIRO_FORMAT_RGB30: like RGB24 but with 10bpc. (Since 1.12)
+ *
+ * #cairo_format_t is used to identify the memory format of
+ * image data.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_format {
+    CAIRO_FORMAT_INVALID   = -1,
+    CAIRO_FORMAT_ARGB32    = 0,
+    CAIRO_FORMAT_RGB24     = 1,
+    CAIRO_FORMAT_A8        = 2,
+    CAIRO_FORMAT_A1        = 3,
+    CAIRO_FORMAT_RGB16_565 = 4,
+    CAIRO_FORMAT_RGB30     = 5
+} cairo_format_t;
+
+
+/**
+ * cairo_write_func_t:
+ * @closure: the output closure
+ * @data: the buffer containing the data to write
+ * @length: the amount of data to write
+ *
+ * #cairo_write_func_t is the type of function which is called when a
+ * backend needs to write data to an output stream.  It is passed the
+ * closure which was specified by the user at the time the write
+ * function was registered, the data to write and the length of the
+ * data in bytes.  The write function should return
+ * %CAIRO_STATUS_SUCCESS if all the data was successfully written,
+ * %CAIRO_STATUS_WRITE_ERROR otherwise.
+ *
+ * Returns: the status code of the write operation
+ *
+ * Since: 1.0
+ **/
+typedef cairo_status_t (*cairo_write_func_t) (void		  *closure,
+					      const unsigned char *data,
+					      unsigned int	   length);
+
+/**
+ * cairo_read_func_t:
+ * @closure: the input closure
+ * @data: the buffer into which to read the data
+ * @length: the amount of data to read
+ *
+ * #cairo_read_func_t is the type of function which is called when a
+ * backend needs to read data from an input stream.  It is passed the
+ * closure which was specified by the user at the time the read
+ * function was registered, the buffer to read the data into and the
+ * length of the data in bytes.  The read function should return
+ * %CAIRO_STATUS_SUCCESS if all the data was successfully read,
+ * %CAIRO_STATUS_READ_ERROR otherwise.
+ *
+ * Returns: the status code of the read operation
+ *
+ * Since: 1.0
+ **/
+typedef cairo_status_t (*cairo_read_func_t) (void		*closure,
+					     unsigned char	*data,
+					     unsigned int	length);
+
+/**
+ * cairo_rectangle_int_t:
+ * @x: X coordinate of the left side of the rectangle
+ * @y: Y coordinate of the the top side of the rectangle
+ * @width: width of the rectangle
+ * @height: height of the rectangle
+ *
+ * A data structure for holding a rectangle with integer coordinates.
+ *
+ * Since: 1.10
+ **/
+
+typedef struct _cairo_rectangle_int {
+    int x, y;
+    int width, height;
+} cairo_rectangle_int_t;
+
+
+/* Functions for manipulating state objects */
+cairo_public cairo_t *
+cairo_create (cairo_surface_t *target);
+
+cairo_public cairo_t *
+cairo_reference (cairo_t *cr);
+
+cairo_public void
+cairo_destroy (cairo_t *cr);
+
+cairo_public unsigned int
+cairo_get_reference_count (cairo_t *cr);
+
+cairo_public void *
+cairo_get_user_data (cairo_t			 *cr,
+		     const cairo_user_data_key_t *key);
+
+cairo_public cairo_status_t
+cairo_set_user_data (cairo_t			 *cr,
+		     const cairo_user_data_key_t *key,
+		     void			 *user_data,
+		     cairo_destroy_func_t	  destroy);
+
+cairo_public void
+cairo_save (cairo_t *cr);
+
+cairo_public void
+cairo_restore (cairo_t *cr);
+
+cairo_public void
+cairo_push_group (cairo_t *cr);
+
+cairo_public void
+cairo_push_group_with_content (cairo_t *cr, cairo_content_t content);
+
+cairo_public cairo_pattern_t *
+cairo_pop_group (cairo_t *cr);
+
+cairo_public void
+cairo_pop_group_to_source (cairo_t *cr);
+
+/* Modify state */
+
+/**
+ * cairo_operator_t:
+ * @CAIRO_OPERATOR_CLEAR: clear destination layer (bounded) (Since 1.0)
+ * @CAIRO_OPERATOR_SOURCE: replace destination layer (bounded) (Since 1.0)
+ * @CAIRO_OPERATOR_OVER: draw source layer on top of destination layer
+ * (bounded) (Since 1.0)
+ * @CAIRO_OPERATOR_IN: draw source where there was destination content
+ * (unbounded) (Since 1.0)
+ * @CAIRO_OPERATOR_OUT: draw source where there was no destination
+ * content (unbounded) (Since 1.0)
+ * @CAIRO_OPERATOR_ATOP: draw source on top of destination content and
+ * only there (Since 1.0)
+ * @CAIRO_OPERATOR_DEST: ignore the source (Since 1.0)
+ * @CAIRO_OPERATOR_DEST_OVER: draw destination on top of source (Since 1.0)
+ * @CAIRO_OPERATOR_DEST_IN: leave destination only where there was
+ * source content (unbounded) (Since 1.0)
+ * @CAIRO_OPERATOR_DEST_OUT: leave destination only where there was no
+ * source content (Since 1.0)
+ * @CAIRO_OPERATOR_DEST_ATOP: leave destination on top of source content
+ * and only there (unbounded) (Since 1.0)
+ * @CAIRO_OPERATOR_XOR: source and destination are shown where there is only
+ * one of them (Since 1.0)
+ * @CAIRO_OPERATOR_ADD: source and destination layers are accumulated (Since 1.0)
+ * @CAIRO_OPERATOR_SATURATE: like over, but assuming source and dest are
+ * disjoint geometries (Since 1.0)
+ * @CAIRO_OPERATOR_MULTIPLY: source and destination layers are multiplied.
+ * This causes the result to be at least as dark as the darker inputs. (Since 1.10)
+ * @CAIRO_OPERATOR_SCREEN: source and destination are complemented and
+ * multiplied. This causes the result to be at least as light as the lighter
+ * inputs. (Since 1.10)
+ * @CAIRO_OPERATOR_OVERLAY: multiplies or screens, depending on the
+ * lightness of the destination color. (Since 1.10)
+ * @CAIRO_OPERATOR_DARKEN: replaces the destination with the source if it
+ * is darker, otherwise keeps the source. (Since 1.10)
+ * @CAIRO_OPERATOR_LIGHTEN: replaces the destination with the source if it
+ * is lighter, otherwise keeps the source. (Since 1.10)
+ * @CAIRO_OPERATOR_COLOR_DODGE: brightens the destination color to reflect
+ * the source color. (Since 1.10)
+ * @CAIRO_OPERATOR_COLOR_BURN: darkens the destination color to reflect
+ * the source color. (Since 1.10)
+ * @CAIRO_OPERATOR_HARD_LIGHT: Multiplies or screens, dependent on source
+ * color. (Since 1.10)
+ * @CAIRO_OPERATOR_SOFT_LIGHT: Darkens or lightens, dependent on source
+ * color. (Since 1.10)
+ * @CAIRO_OPERATOR_DIFFERENCE: Takes the difference of the source and
+ * destination color. (Since 1.10)
+ * @CAIRO_OPERATOR_EXCLUSION: Produces an effect similar to difference, but
+ * with lower contrast. (Since 1.10)
+ * @CAIRO_OPERATOR_HSL_HUE: Creates a color with the hue of the source
+ * and the saturation and luminosity of the target. (Since 1.10)
+ * @CAIRO_OPERATOR_HSL_SATURATION: Creates a color with the saturation
+ * of the source and the hue and luminosity of the target. Painting with
+ * this mode onto a gray area produces no change. (Since 1.10)
+ * @CAIRO_OPERATOR_HSL_COLOR: Creates a color with the hue and saturation
+ * of the source and the luminosity of the target. This preserves the gray
+ * levels of the target and is useful for coloring monochrome images or
+ * tinting color images. (Since 1.10)
+ * @CAIRO_OPERATOR_HSL_LUMINOSITY: Creates a color with the luminosity of
+ * the source and the hue and saturation of the target. This produces an
+ * inverse effect to @CAIRO_OPERATOR_HSL_COLOR. (Since 1.10)
+ *
+ * #cairo_operator_t is used to set the compositing operator for all cairo
+ * drawing operations.
+ *
+ * The default operator is %CAIRO_OPERATOR_OVER.
+ *
+ * The operators marked as <firstterm>unbounded</firstterm> modify their
+ * destination even outside of the mask layer (that is, their effect is not
+ * bound by the mask layer).  However, their effect can still be limited by
+ * way of clipping.
+ *
+ * To keep things simple, the operator descriptions here
+ * document the behavior for when both source and destination are either fully
+ * transparent or fully opaque.  The actual implementation works for
+ * translucent layers too.
+ * For a more detailed explanation of the effects of each operator, including
+ * the mathematical definitions, see
+ * <ulink url="https://cairographics.org/operators/">https://cairographics.org/operators/</ulink>.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_operator {
+    CAIRO_OPERATOR_CLEAR,
+
+    CAIRO_OPERATOR_SOURCE,
+    CAIRO_OPERATOR_OVER,
+    CAIRO_OPERATOR_IN,
+    CAIRO_OPERATOR_OUT,
+    CAIRO_OPERATOR_ATOP,
+
+    CAIRO_OPERATOR_DEST,
+    CAIRO_OPERATOR_DEST_OVER,
+    CAIRO_OPERATOR_DEST_IN,
+    CAIRO_OPERATOR_DEST_OUT,
+    CAIRO_OPERATOR_DEST_ATOP,
+
+    CAIRO_OPERATOR_XOR,
+    CAIRO_OPERATOR_ADD,
+    CAIRO_OPERATOR_SATURATE,
+
+    CAIRO_OPERATOR_MULTIPLY,
+    CAIRO_OPERATOR_SCREEN,
+    CAIRO_OPERATOR_OVERLAY,
+    CAIRO_OPERATOR_DARKEN,
+    CAIRO_OPERATOR_LIGHTEN,
+    CAIRO_OPERATOR_COLOR_DODGE,
+    CAIRO_OPERATOR_COLOR_BURN,
+    CAIRO_OPERATOR_HARD_LIGHT,
+    CAIRO_OPERATOR_SOFT_LIGHT,
+    CAIRO_OPERATOR_DIFFERENCE,
+    CAIRO_OPERATOR_EXCLUSION,
+    CAIRO_OPERATOR_HSL_HUE,
+    CAIRO_OPERATOR_HSL_SATURATION,
+    CAIRO_OPERATOR_HSL_COLOR,
+    CAIRO_OPERATOR_HSL_LUMINOSITY
+} cairo_operator_t;
+
+cairo_public void
+cairo_set_operator (cairo_t *cr, cairo_operator_t op);
+
+cairo_public void
+cairo_set_source (cairo_t *cr, cairo_pattern_t *source);
+
+cairo_public void
+cairo_set_source_rgb (cairo_t *cr, double red, double green, double blue);
+
+cairo_public void
+cairo_set_source_rgba (cairo_t *cr,
+		       double red, double green, double blue,
+		       double alpha);
+
+cairo_public void
+cairo_set_source_surface (cairo_t	  *cr,
+			  cairo_surface_t *surface,
+			  double	   x,
+			  double	   y);
+
+cairo_public void
+cairo_set_tolerance (cairo_t *cr, double tolerance);
+
+/**
+ * cairo_antialias_t:
+ * @CAIRO_ANTIALIAS_DEFAULT: Use the default antialiasing for
+ *   the subsystem and target device, since 1.0
+ * @CAIRO_ANTIALIAS_NONE: Use a bilevel alpha mask, since 1.0
+ * @CAIRO_ANTIALIAS_GRAY: Perform single-color antialiasing (using
+ *  shades of gray for black text on a white background, for example), since 1.0
+ * @CAIRO_ANTIALIAS_SUBPIXEL: Perform antialiasing by taking
+ *  advantage of the order of subpixel elements on devices
+ *  such as LCD panels, since 1.0
+ * @CAIRO_ANTIALIAS_FAST: Hint that the backend should perform some
+ * antialiasing but prefer speed over quality, since 1.12
+ * @CAIRO_ANTIALIAS_GOOD: The backend should balance quality against
+ * performance, since 1.12
+ * @CAIRO_ANTIALIAS_BEST: Hint that the backend should render at the highest
+ * quality, sacrificing speed if necessary, since 1.12
+ *
+ * Specifies the type of antialiasing to do when rendering text or shapes.
+ *
+ * As it is not necessarily clear from the above what advantages a particular
+ * antialias method provides, since 1.12, there is also a set of hints:
+ * @CAIRO_ANTIALIAS_FAST: Allow the backend to degrade raster quality for speed
+ * @CAIRO_ANTIALIAS_GOOD: A balance between speed and quality
+ * @CAIRO_ANTIALIAS_BEST: A high-fidelity, but potentially slow, raster mode
+ *
+ * These make no guarantee on how the backend will perform its rasterisation
+ * (if it even rasterises!), nor that they have any differing effect other
+ * than to enable some form of antialiasing. In the case of glyph rendering,
+ * @CAIRO_ANTIALIAS_FAST and @CAIRO_ANTIALIAS_GOOD will be mapped to
+ * @CAIRO_ANTIALIAS_GRAY, with @CAIRO_ANTALIAS_BEST being equivalent to
+ * @CAIRO_ANTIALIAS_SUBPIXEL.
+ *
+ * The interpretation of @CAIRO_ANTIALIAS_DEFAULT is left entirely up to
+ * the backend, typically this will be similar to @CAIRO_ANTIALIAS_GOOD.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_antialias {
+    CAIRO_ANTIALIAS_DEFAULT,
+
+    /* method */
+    CAIRO_ANTIALIAS_NONE,
+    CAIRO_ANTIALIAS_GRAY,
+    CAIRO_ANTIALIAS_SUBPIXEL,
+
+    /* hints */
+    CAIRO_ANTIALIAS_FAST,
+    CAIRO_ANTIALIAS_GOOD,
+    CAIRO_ANTIALIAS_BEST
+} cairo_antialias_t;
+
+cairo_public void
+cairo_set_antialias (cairo_t *cr, cairo_antialias_t antialias);
+
+/**
+ * cairo_fill_rule_t:
+ * @CAIRO_FILL_RULE_WINDING: If the path crosses the ray from
+ * left-to-right, counts +1. If the path crosses the ray
+ * from right to left, counts -1. (Left and right are determined
+ * from the perspective of looking along the ray from the starting
+ * point.) If the total count is non-zero, the point will be filled. (Since 1.0)
+ * @CAIRO_FILL_RULE_EVEN_ODD: Counts the total number of
+ * intersections, without regard to the orientation of the contour. If
+ * the total number of intersections is odd, the point will be
+ * filled. (Since 1.0)
+ *
+ * #cairo_fill_rule_t is used to select how paths are filled. For both
+ * fill rules, whether or not a point is included in the fill is
+ * determined by taking a ray from that point to infinity and looking
+ * at intersections with the path. The ray can be in any direction,
+ * as long as it doesn't pass through the end point of a segment
+ * or have a tricky intersection such as intersecting tangent to the path.
+ * (Note that filling is not actually implemented in this way. This
+ * is just a description of the rule that is applied.)
+ *
+ * The default fill rule is %CAIRO_FILL_RULE_WINDING.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_fill_rule {
+    CAIRO_FILL_RULE_WINDING,
+    CAIRO_FILL_RULE_EVEN_ODD
+} cairo_fill_rule_t;
+
+cairo_public void
+cairo_set_fill_rule (cairo_t *cr, cairo_fill_rule_t fill_rule);
+
+cairo_public void
+cairo_set_line_width (cairo_t *cr, double width);
+
+/**
+ * cairo_line_cap_t:
+ * @CAIRO_LINE_CAP_BUTT: start(stop) the line exactly at the start(end) point (Since 1.0)
+ * @CAIRO_LINE_CAP_ROUND: use a round ending, the center of the circle is the end point (Since 1.0)
+ * @CAIRO_LINE_CAP_SQUARE: use squared ending, the center of the square is the end point (Since 1.0)
+ *
+ * Specifies how to render the endpoints of the path when stroking.
+ *
+ * The default line cap style is %CAIRO_LINE_CAP_BUTT.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_line_cap {
+    CAIRO_LINE_CAP_BUTT,
+    CAIRO_LINE_CAP_ROUND,
+    CAIRO_LINE_CAP_SQUARE
+} cairo_line_cap_t;
+
+cairo_public void
+cairo_set_line_cap (cairo_t *cr, cairo_line_cap_t line_cap);
+
+/**
+ * cairo_line_join_t:
+ * @CAIRO_LINE_JOIN_MITER: use a sharp (angled) corner, see
+ * cairo_set_miter_limit() (Since 1.0)
+ * @CAIRO_LINE_JOIN_ROUND: use a rounded join, the center of the circle is the
+ * joint point (Since 1.0)
+ * @CAIRO_LINE_JOIN_BEVEL: use a cut-off join, the join is cut off at half
+ * the line width from the joint point (Since 1.0)
+ *
+ * Specifies how to render the junction of two lines when stroking.
+ *
+ * The default line join style is %CAIRO_LINE_JOIN_MITER.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_line_join {
+    CAIRO_LINE_JOIN_MITER,
+    CAIRO_LINE_JOIN_ROUND,
+    CAIRO_LINE_JOIN_BEVEL
+} cairo_line_join_t;
+
+cairo_public void
+cairo_set_line_join (cairo_t *cr, cairo_line_join_t line_join);
+
+cairo_public void
+cairo_set_dash (cairo_t      *cr,
+		const double *dashes,
+		int	      num_dashes,
+		double	      offset);
+
+cairo_public void
+cairo_set_miter_limit (cairo_t *cr, double limit);
+
+cairo_public void
+cairo_translate (cairo_t *cr, double tx, double ty);
+
+cairo_public void
+cairo_scale (cairo_t *cr, double sx, double sy);
+
+cairo_public void
+cairo_rotate (cairo_t *cr, double angle);
+
+cairo_public void
+cairo_transform (cairo_t	      *cr,
+		 const cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_set_matrix (cairo_t	       *cr,
+		  const cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_identity_matrix (cairo_t *cr);
+
+cairo_public void
+cairo_user_to_device (cairo_t *cr, double *x, double *y);
+
+cairo_public void
+cairo_user_to_device_distance (cairo_t *cr, double *dx, double *dy);
+
+cairo_public void
+cairo_device_to_user (cairo_t *cr, double *x, double *y);
+
+cairo_public void
+cairo_device_to_user_distance (cairo_t *cr, double *dx, double *dy);
+
+/* Path creation functions */
+cairo_public void
+cairo_new_path (cairo_t *cr);
+
+cairo_public void
+cairo_move_to (cairo_t *cr, double x, double y);
+
+cairo_public void
+cairo_new_sub_path (cairo_t *cr);
+
+cairo_public void
+cairo_line_to (cairo_t *cr, double x, double y);
+
+cairo_public void
+cairo_curve_to (cairo_t *cr,
+		double x1, double y1,
+		double x2, double y2,
+		double x3, double y3);
+
+cairo_public void
+cairo_arc (cairo_t *cr,
+	   double xc, double yc,
+	   double radius,
+	   double angle1, double angle2);
+
+cairo_public void
+cairo_arc_negative (cairo_t *cr,
+		    double xc, double yc,
+		    double radius,
+		    double angle1, double angle2);
+
+/* XXX: NYI
+cairo_public void
+cairo_arc_to (cairo_t *cr,
+	      double x1, double y1,
+	      double x2, double y2,
+	      double radius);
+*/
+
+cairo_public void
+cairo_rel_move_to (cairo_t *cr, double dx, double dy);
+
+cairo_public void
+cairo_rel_line_to (cairo_t *cr, double dx, double dy);
+
+cairo_public void
+cairo_rel_curve_to (cairo_t *cr,
+		    double dx1, double dy1,
+		    double dx2, double dy2,
+		    double dx3, double dy3);
+
+cairo_public void
+cairo_rectangle (cairo_t *cr,
+		 double x, double y,
+		 double width, double height);
+
+/* XXX: NYI
+cairo_public void
+cairo_stroke_to_path (cairo_t *cr);
+*/
+
+cairo_public void
+cairo_close_path (cairo_t *cr);
+
+cairo_public void
+cairo_path_extents (cairo_t *cr,
+		    double *x1, double *y1,
+		    double *x2, double *y2);
+
+/* Painting functions */
+cairo_public void
+cairo_paint (cairo_t *cr);
+
+cairo_public void
+cairo_paint_with_alpha (cairo_t *cr,
+			double   alpha);
+
+cairo_public void
+cairo_mask (cairo_t         *cr,
+	    cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_mask_surface (cairo_t         *cr,
+		    cairo_surface_t *surface,
+		    double           surface_x,
+		    double           surface_y);
+
+cairo_public void
+cairo_stroke (cairo_t *cr);
+
+cairo_public void
+cairo_stroke_preserve (cairo_t *cr);
+
+cairo_public void
+cairo_fill (cairo_t *cr);
+
+cairo_public void
+cairo_fill_preserve (cairo_t *cr);
+
+cairo_public void
+cairo_copy_page (cairo_t *cr);
+
+cairo_public void
+cairo_show_page (cairo_t *cr);
+
+/* Insideness testing */
+cairo_public cairo_bool_t
+cairo_in_stroke (cairo_t *cr, double x, double y);
+
+cairo_public cairo_bool_t
+cairo_in_fill (cairo_t *cr, double x, double y);
+
+cairo_public cairo_bool_t
+cairo_in_clip (cairo_t *cr, double x, double y);
+
+/* Rectangular extents */
+cairo_public void
+cairo_stroke_extents (cairo_t *cr,
+		      double *x1, double *y1,
+		      double *x2, double *y2);
+
+cairo_public void
+cairo_fill_extents (cairo_t *cr,
+		    double *x1, double *y1,
+		    double *x2, double *y2);
+
+/* Clipping */
+cairo_public void
+cairo_reset_clip (cairo_t *cr);
+
+cairo_public void
+cairo_clip (cairo_t *cr);
+
+cairo_public void
+cairo_clip_preserve (cairo_t *cr);
+
+cairo_public void
+cairo_clip_extents (cairo_t *cr,
+		    double *x1, double *y1,
+		    double *x2, double *y2);
+
+/**
+ * cairo_rectangle_t:
+ * @x: X coordinate of the left side of the rectangle
+ * @y: Y coordinate of the the top side of the rectangle
+ * @width: width of the rectangle
+ * @height: height of the rectangle
+ *
+ * A data structure for holding a rectangle.
+ *
+ * Since: 1.4
+ **/
+typedef struct _cairo_rectangle {
+    double x, y, width, height;
+} cairo_rectangle_t;
+
+/**
+ * cairo_rectangle_list_t:
+ * @status: Error status of the rectangle list
+ * @rectangles: Array containing the rectangles
+ * @num_rectangles: Number of rectangles in this list
+ * 
+ * A data structure for holding a dynamically allocated
+ * array of rectangles.
+ *
+ * Since: 1.4
+ **/
+typedef struct _cairo_rectangle_list {
+    cairo_status_t     status;
+    cairo_rectangle_t *rectangles;
+    int                num_rectangles;
+} cairo_rectangle_list_t;
+
+cairo_public cairo_rectangle_list_t *
+cairo_copy_clip_rectangle_list (cairo_t *cr);
+
+cairo_public void
+cairo_rectangle_list_destroy (cairo_rectangle_list_t *rectangle_list);
+
+/* Logical structure tagging functions */
+
+#define CAIRO_TAG_DEST "cairo.dest"
+#define CAIRO_TAG_LINK "Link"
+
+cairo_public void
+cairo_tag_begin (cairo_t *cr, const char *tag_name, const char *attributes);
+
+cairo_public void
+cairo_tag_end (cairo_t *cr, const char *tag_name);
+
+/* Font/Text functions */
+
+/**
+ * cairo_scaled_font_t:
+ *
+ * A #cairo_scaled_font_t is a font scaled to a particular size and device
+ * resolution. A #cairo_scaled_font_t is most useful for low-level font
+ * usage where a library or application wants to cache a reference
+ * to a scaled font to speed up the computation of metrics.
+ *
+ * There are various types of scaled fonts, depending on the
+ * <firstterm>font backend</firstterm> they use. The type of a
+ * scaled font can be queried using cairo_scaled_font_get_type().
+ *
+ * Memory management of #cairo_scaled_font_t is done with
+ * cairo_scaled_font_reference() and cairo_scaled_font_destroy().
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_scaled_font cairo_scaled_font_t;
+
+/**
+ * cairo_font_face_t:
+ *
+ * A #cairo_font_face_t specifies all aspects of a font other
+ * than the size or font matrix (a font matrix is used to distort
+ * a font by shearing it or scaling it unequally in the two
+ * directions) . A font face can be set on a #cairo_t by using
+ * cairo_set_font_face(); the size and font matrix are set with
+ * cairo_set_font_size() and cairo_set_font_matrix().
+ *
+ * There are various types of font faces, depending on the
+ * <firstterm>font backend</firstterm> they use. The type of a
+ * font face can be queried using cairo_font_face_get_type().
+ *
+ * Memory management of #cairo_font_face_t is done with
+ * cairo_font_face_reference() and cairo_font_face_destroy().
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_font_face cairo_font_face_t;
+
+/**
+ * cairo_glyph_t:
+ * @index: glyph index in the font. The exact interpretation of the
+ *      glyph index depends on the font technology being used.
+ * @x: the offset in the X direction between the origin used for
+ *     drawing or measuring the string and the origin of this glyph.
+ * @y: the offset in the Y direction between the origin used for
+ *     drawing or measuring the string and the origin of this glyph.
+ *
+ * The #cairo_glyph_t structure holds information about a single glyph
+ * when drawing or measuring text. A font is (in simple terms) a
+ * collection of shapes used to draw text. A glyph is one of these
+ * shapes. There can be multiple glyphs for a single character
+ * (alternates to be used in different contexts, for example), or a
+ * glyph can be a <firstterm>ligature</firstterm> of multiple
+ * characters. Cairo doesn't expose any way of converting input text
+ * into glyphs, so in order to use the Cairo interfaces that take
+ * arrays of glyphs, you must directly access the appropriate
+ * underlying font system.
+ *
+ * Note that the offsets given by @x and @y are not cumulative. When
+ * drawing or measuring text, each glyph is individually positioned
+ * with respect to the overall origin
+ *
+ * Since: 1.0
+ **/
+typedef struct {
+    unsigned long        index;
+    double               x;
+    double               y;
+} cairo_glyph_t;
+
+cairo_public cairo_glyph_t *
+cairo_glyph_allocate (int num_glyphs);
+
+cairo_public void
+cairo_glyph_free (cairo_glyph_t *glyphs);
+
+/**
+ * cairo_text_cluster_t:
+ * @num_bytes: the number of bytes of UTF-8 text covered by cluster
+ * @num_glyphs: the number of glyphs covered by cluster
+ *
+ * The #cairo_text_cluster_t structure holds information about a single
+ * <firstterm>text cluster</firstterm>.  A text cluster is a minimal
+ * mapping of some glyphs corresponding to some UTF-8 text.
+ *
+ * For a cluster to be valid, both @num_bytes and @num_glyphs should
+ * be non-negative, and at least one should be non-zero.
+ * Note that clusters with zero glyphs are not as well supported as
+ * normal clusters.  For example, PDF rendering applications typically
+ * ignore those clusters when PDF text is being selected.
+ *
+ * See cairo_show_text_glyphs() for how clusters are used in advanced
+ * text operations.
+ *
+ * Since: 1.8
+ **/
+typedef struct {
+    int        num_bytes;
+    int        num_glyphs;
+} cairo_text_cluster_t;
+
+cairo_public cairo_text_cluster_t *
+cairo_text_cluster_allocate (int num_clusters);
+
+cairo_public void
+cairo_text_cluster_free (cairo_text_cluster_t *clusters);
+
+/**
+ * cairo_text_cluster_flags_t:
+ * @CAIRO_TEXT_CLUSTER_FLAG_BACKWARD: The clusters in the cluster array
+ * map to glyphs in the glyph array from end to start. (Since 1.8)
+ *
+ * Specifies properties of a text cluster mapping.
+ *
+ * Since: 1.8
+ **/
+typedef enum _cairo_text_cluster_flags {
+    CAIRO_TEXT_CLUSTER_FLAG_BACKWARD = 0x00000001
+} cairo_text_cluster_flags_t;
+
+/**
+ * cairo_text_extents_t:
+ * @x_bearing: the horizontal distance from the origin to the
+ *   leftmost part of the glyphs as drawn. Positive if the
+ *   glyphs lie entirely to the right of the origin.
+ * @y_bearing: the vertical distance from the origin to the
+ *   topmost part of the glyphs as drawn. Positive only if the
+ *   glyphs lie completely below the origin; will usually be
+ *   negative.
+ * @width: width of the glyphs as drawn
+ * @height: height of the glyphs as drawn
+ * @x_advance:distance to advance in the X direction
+ *    after drawing these glyphs
+ * @y_advance: distance to advance in the Y direction
+ *   after drawing these glyphs. Will typically be zero except
+ *   for vertical text layout as found in East-Asian languages.
+ *
+ * The #cairo_text_extents_t structure stores the extents of a single
+ * glyph or a string of glyphs in user-space coordinates. Because text
+ * extents are in user-space coordinates, they are mostly, but not
+ * entirely, independent of the current transformation matrix. If you call
+ * <literal>cairo_scale(cr, 2.0, 2.0)</literal>, text will
+ * be drawn twice as big, but the reported text extents will not be
+ * doubled. They will change slightly due to hinting (so you can't
+ * assume that metrics are independent of the transformation matrix),
+ * but otherwise will remain unchanged.
+ *
+ * Since: 1.0
+ **/
+typedef struct {
+    double x_bearing;
+    double y_bearing;
+    double width;
+    double height;
+    double x_advance;
+    double y_advance;
+} cairo_text_extents_t;
+
+/**
+ * cairo_font_extents_t:
+ * @ascent: the distance that the font extends above the baseline.
+ *          Note that this is not always exactly equal to the maximum
+ *          of the extents of all the glyphs in the font, but rather
+ *          is picked to express the font designer's intent as to
+ *          how the font should align with elements above it.
+ * @descent: the distance that the font extends below the baseline.
+ *           This value is positive for typical fonts that include
+ *           portions below the baseline. Note that this is not always
+ *           exactly equal to the maximum of the extents of all the
+ *           glyphs in the font, but rather is picked to express the
+ *           font designer's intent as to how the font should
+ *           align with elements below it.
+ * @height: the recommended vertical distance between baselines when
+ *          setting consecutive lines of text with the font. This
+ *          is greater than @ascent+@descent by a
+ *          quantity known as the <firstterm>line spacing</firstterm>
+ *          or <firstterm>external leading</firstterm>. When space
+ *          is at a premium, most fonts can be set with only
+ *          a distance of @ascent+@descent between lines.
+ * @max_x_advance: the maximum distance in the X direction that
+ *         the origin is advanced for any glyph in the font.
+ * @max_y_advance: the maximum distance in the Y direction that
+ *         the origin is advanced for any glyph in the font.
+ *         This will be zero for normal fonts used for horizontal
+ *         writing. (The scripts of East Asia are sometimes written
+ *         vertically.)
+ *
+ * The #cairo_font_extents_t structure stores metric information for
+ * a font. Values are given in the current user-space coordinate
+ * system.
+ *
+ * Because font metrics are in user-space coordinates, they are
+ * mostly, but not entirely, independent of the current transformation
+ * matrix. If you call <literal>cairo_scale(cr, 2.0, 2.0)</literal>,
+ * text will be drawn twice as big, but the reported text extents will
+ * not be doubled. They will change slightly due to hinting (so you
+ * can't assume that metrics are independent of the transformation
+ * matrix), but otherwise will remain unchanged.
+ *
+ * Since: 1.0
+ **/
+typedef struct {
+    double ascent;
+    double descent;
+    double height;
+    double max_x_advance;
+    double max_y_advance;
+} cairo_font_extents_t;
+
+/**
+ * cairo_font_slant_t:
+ * @CAIRO_FONT_SLANT_NORMAL: Upright font style, since 1.0
+ * @CAIRO_FONT_SLANT_ITALIC: Italic font style, since 1.0
+ * @CAIRO_FONT_SLANT_OBLIQUE: Oblique font style, since 1.0
+ *
+ * Specifies variants of a font face based on their slant.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_font_slant {
+    CAIRO_FONT_SLANT_NORMAL,
+    CAIRO_FONT_SLANT_ITALIC,
+    CAIRO_FONT_SLANT_OBLIQUE
+} cairo_font_slant_t;
+
+/**
+ * cairo_font_weight_t:
+ * @CAIRO_FONT_WEIGHT_NORMAL: Normal font weight, since 1.0
+ * @CAIRO_FONT_WEIGHT_BOLD: Bold font weight, since 1.0
+ *
+ * Specifies variants of a font face based on their weight.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_font_weight {
+    CAIRO_FONT_WEIGHT_NORMAL,
+    CAIRO_FONT_WEIGHT_BOLD
+} cairo_font_weight_t;
+
+/**
+ * cairo_subpixel_order_t:
+ * @CAIRO_SUBPIXEL_ORDER_DEFAULT: Use the default subpixel order for
+ *   for the target device, since 1.0
+ * @CAIRO_SUBPIXEL_ORDER_RGB: Subpixel elements are arranged horizontally
+ *   with red at the left, since 1.0
+ * @CAIRO_SUBPIXEL_ORDER_BGR:  Subpixel elements are arranged horizontally
+ *   with blue at the left, since 1.0
+ * @CAIRO_SUBPIXEL_ORDER_VRGB: Subpixel elements are arranged vertically
+ *   with red at the top, since 1.0
+ * @CAIRO_SUBPIXEL_ORDER_VBGR: Subpixel elements are arranged vertically
+ *   with blue at the top, since 1.0
+ *
+ * The subpixel order specifies the order of color elements within
+ * each pixel on the display device when rendering with an
+ * antialiasing mode of %CAIRO_ANTIALIAS_SUBPIXEL.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_subpixel_order {
+    CAIRO_SUBPIXEL_ORDER_DEFAULT,
+    CAIRO_SUBPIXEL_ORDER_RGB,
+    CAIRO_SUBPIXEL_ORDER_BGR,
+    CAIRO_SUBPIXEL_ORDER_VRGB,
+    CAIRO_SUBPIXEL_ORDER_VBGR
+} cairo_subpixel_order_t;
+
+/**
+ * cairo_hint_style_t:
+ * @CAIRO_HINT_STYLE_DEFAULT: Use the default hint style for
+ *   font backend and target device, since 1.0
+ * @CAIRO_HINT_STYLE_NONE: Do not hint outlines, since 1.0
+ * @CAIRO_HINT_STYLE_SLIGHT: Hint outlines slightly to improve
+ *   contrast while retaining good fidelity to the original
+ *   shapes, since 1.0
+ * @CAIRO_HINT_STYLE_MEDIUM: Hint outlines with medium strength
+ *   giving a compromise between fidelity to the original shapes
+ *   and contrast, since 1.0
+ * @CAIRO_HINT_STYLE_FULL: Hint outlines to maximize contrast, since 1.0
+ *
+ * Specifies the type of hinting to do on font outlines. Hinting
+ * is the process of fitting outlines to the pixel grid in order
+ * to improve the appearance of the result. Since hinting outlines
+ * involves distorting them, it also reduces the faithfulness
+ * to the original outline shapes. Not all of the outline hinting
+ * styles are supported by all font backends.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_hint_style {
+    CAIRO_HINT_STYLE_DEFAULT,
+    CAIRO_HINT_STYLE_NONE,
+    CAIRO_HINT_STYLE_SLIGHT,
+    CAIRO_HINT_STYLE_MEDIUM,
+    CAIRO_HINT_STYLE_FULL
+} cairo_hint_style_t;
+
+/**
+ * cairo_hint_metrics_t:
+ * @CAIRO_HINT_METRICS_DEFAULT: Hint metrics in the default
+ *  manner for the font backend and target device, since 1.0
+ * @CAIRO_HINT_METRICS_OFF: Do not hint font metrics, since 1.0
+ * @CAIRO_HINT_METRICS_ON: Hint font metrics, since 1.0
+ *
+ * Specifies whether to hint font metrics; hinting font metrics
+ * means quantizing them so that they are integer values in
+ * device space. Doing this improves the consistency of
+ * letter and line spacing, however it also means that text
+ * will be laid out differently at different zoom factors.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_hint_metrics {
+    CAIRO_HINT_METRICS_DEFAULT,
+    CAIRO_HINT_METRICS_OFF,
+    CAIRO_HINT_METRICS_ON
+} cairo_hint_metrics_t;
+
+/**
+ * cairo_font_options_t:
+ *
+ * An opaque structure holding all options that are used when
+ * rendering fonts.
+ *
+ * Individual features of a #cairo_font_options_t can be set or
+ * accessed using functions named
+ * <function>cairo_font_options_set_<emphasis>feature_name</emphasis>()</function> and
+ * <function>cairo_font_options_get_<emphasis>feature_name</emphasis>()</function>, like
+ * cairo_font_options_set_antialias() and
+ * cairo_font_options_get_antialias().
+ *
+ * New features may be added to a #cairo_font_options_t in the
+ * future.  For this reason, cairo_font_options_copy(),
+ * cairo_font_options_equal(), cairo_font_options_merge(), and
+ * cairo_font_options_hash() should be used to copy, check
+ * for equality, merge, or compute a hash value of
+ * #cairo_font_options_t objects.
+ *
+ * Since: 1.0
+ **/
+typedef struct _cairo_font_options cairo_font_options_t;
+
+cairo_public cairo_font_options_t *
+cairo_font_options_create (void);
+
+cairo_public cairo_font_options_t *
+cairo_font_options_copy (const cairo_font_options_t *original);
+
+cairo_public void
+cairo_font_options_destroy (cairo_font_options_t *options);
+
+cairo_public cairo_status_t
+cairo_font_options_status (cairo_font_options_t *options);
+
+cairo_public void
+cairo_font_options_merge (cairo_font_options_t       *options,
+			  const cairo_font_options_t *other);
+cairo_public cairo_bool_t
+cairo_font_options_equal (const cairo_font_options_t *options,
+			  const cairo_font_options_t *other);
+
+cairo_public unsigned long
+cairo_font_options_hash (const cairo_font_options_t *options);
+
+cairo_public void
+cairo_font_options_set_antialias (cairo_font_options_t *options,
+				  cairo_antialias_t     antialias);
+cairo_public cairo_antialias_t
+cairo_font_options_get_antialias (const cairo_font_options_t *options);
+
+cairo_public void
+cairo_font_options_set_subpixel_order (cairo_font_options_t   *options,
+				       cairo_subpixel_order_t  subpixel_order);
+cairo_public cairo_subpixel_order_t
+cairo_font_options_get_subpixel_order (const cairo_font_options_t *options);
+
+cairo_public void
+cairo_font_options_set_hint_style (cairo_font_options_t *options,
+				   cairo_hint_style_t     hint_style);
+cairo_public cairo_hint_style_t
+cairo_font_options_get_hint_style (const cairo_font_options_t *options);
+
+cairo_public void
+cairo_font_options_set_hint_metrics (cairo_font_options_t *options,
+				     cairo_hint_metrics_t  hint_metrics);
+cairo_public cairo_hint_metrics_t
+cairo_font_options_get_hint_metrics (const cairo_font_options_t *options);
+
+cairo_public const char *
+cairo_font_options_get_variations (cairo_font_options_t *options);
+
+cairo_public void
+cairo_font_options_set_variations (cairo_font_options_t *options,
+                                   const char           *variations);
+
+/* This interface is for dealing with text as text, not caring about the
+   font object inside the the cairo_t. */
+
+cairo_public void
+cairo_select_font_face (cairo_t              *cr,
+			const char           *family,
+			cairo_font_slant_t   slant,
+			cairo_font_weight_t  weight);
+
+cairo_public void
+cairo_set_font_size (cairo_t *cr, double size);
+
+cairo_public void
+cairo_set_font_matrix (cairo_t		    *cr,
+		       const cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_get_font_matrix (cairo_t *cr,
+		       cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_set_font_options (cairo_t                    *cr,
+			const cairo_font_options_t *options);
+
+cairo_public void
+cairo_get_font_options (cairo_t              *cr,
+			cairo_font_options_t *options);
+
+cairo_public void
+cairo_set_font_face (cairo_t *cr, cairo_font_face_t *font_face);
+
+cairo_public cairo_font_face_t *
+cairo_get_font_face (cairo_t *cr);
+
+cairo_public void
+cairo_set_scaled_font (cairo_t                   *cr,
+		       const cairo_scaled_font_t *scaled_font);
+
+cairo_public cairo_scaled_font_t *
+cairo_get_scaled_font (cairo_t *cr);
+
+cairo_public void
+cairo_show_text (cairo_t *cr, const char *utf8);
+
+cairo_public void
+cairo_show_glyphs (cairo_t *cr, const cairo_glyph_t *glyphs, int num_glyphs);
+
+cairo_public void
+cairo_show_text_glyphs (cairo_t			   *cr,
+			const char		   *utf8,
+			int			    utf8_len,
+			const cairo_glyph_t	   *glyphs,
+			int			    num_glyphs,
+			const cairo_text_cluster_t *clusters,
+			int			    num_clusters,
+			cairo_text_cluster_flags_t  cluster_flags);
+
+cairo_public void
+cairo_text_path  (cairo_t *cr, const char *utf8);
+
+cairo_public void
+cairo_glyph_path (cairo_t *cr, const cairo_glyph_t *glyphs, int num_glyphs);
+
+cairo_public void
+cairo_text_extents (cairo_t              *cr,
+		    const char    	 *utf8,
+		    cairo_text_extents_t *extents);
+
+cairo_public void
+cairo_glyph_extents (cairo_t               *cr,
+		     const cairo_glyph_t   *glyphs,
+		     int                   num_glyphs,
+		     cairo_text_extents_t  *extents);
+
+cairo_public void
+cairo_font_extents (cairo_t              *cr,
+		    cairo_font_extents_t *extents);
+
+/* Generic identifier for a font style */
+
+cairo_public cairo_font_face_t *
+cairo_font_face_reference (cairo_font_face_t *font_face);
+
+cairo_public void
+cairo_font_face_destroy (cairo_font_face_t *font_face);
+
+cairo_public unsigned int
+cairo_font_face_get_reference_count (cairo_font_face_t *font_face);
+
+cairo_public cairo_status_t
+cairo_font_face_status (cairo_font_face_t *font_face);
+
+
+/**
+ * cairo_font_type_t:
+ * @CAIRO_FONT_TYPE_TOY: The font was created using cairo's toy font api (Since: 1.2)
+ * @CAIRO_FONT_TYPE_FT: The font is of type FreeType (Since: 1.2)
+ * @CAIRO_FONT_TYPE_WIN32: The font is of type Win32 (Since: 1.2)
+ * @CAIRO_FONT_TYPE_QUARTZ: The font is of type Quartz (Since: 1.6, in 1.2 and
+ * 1.4 it was named CAIRO_FONT_TYPE_ATSUI)
+ * @CAIRO_FONT_TYPE_USER: The font was create using cairo's user font api (Since: 1.8)
+ *
+ * #cairo_font_type_t is used to describe the type of a given font
+ * face or scaled font. The font types are also known as "font
+ * backends" within cairo.
+ *
+ * The type of a font face is determined by the function used to
+ * create it, which will generally be of the form
+ * <function>cairo_<emphasis>type</emphasis>_font_face_create(<!-- -->)</function>.
+ * The font face type can be queried with cairo_font_face_get_type()
+ *
+ * The various #cairo_font_face_t functions can be used with a font face
+ * of any type.
+ *
+ * The type of a scaled font is determined by the type of the font
+ * face passed to cairo_scaled_font_create(). The scaled font type can
+ * be queried with cairo_scaled_font_get_type()
+ *
+ * The various #cairo_scaled_font_t functions can be used with scaled
+ * fonts of any type, but some font backends also provide
+ * type-specific functions that must only be called with a scaled font
+ * of the appropriate type. These functions have names that begin with
+ * <function>cairo_<emphasis>type</emphasis>_scaled_font(<!-- -->)</function>
+ * such as cairo_ft_scaled_font_lock_face().
+ *
+ * The behavior of calling a type-specific function with a scaled font
+ * of the wrong type is undefined.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.2
+ **/
+typedef enum _cairo_font_type {
+    CAIRO_FONT_TYPE_TOY,
+    CAIRO_FONT_TYPE_FT,
+    CAIRO_FONT_TYPE_WIN32,
+    CAIRO_FONT_TYPE_QUARTZ,
+    CAIRO_FONT_TYPE_USER
+} cairo_font_type_t;
+
+cairo_public cairo_font_type_t
+cairo_font_face_get_type (cairo_font_face_t *font_face);
+
+cairo_public void *
+cairo_font_face_get_user_data (cairo_font_face_t	   *font_face,
+			       const cairo_user_data_key_t *key);
+
+cairo_public cairo_status_t
+cairo_font_face_set_user_data (cairo_font_face_t	   *font_face,
+			       const cairo_user_data_key_t *key,
+			       void			   *user_data,
+			       cairo_destroy_func_t	    destroy);
+
+/* Portable interface to general font features. */
+
+cairo_public cairo_scaled_font_t *
+cairo_scaled_font_create (cairo_font_face_t          *font_face,
+			  const cairo_matrix_t       *font_matrix,
+			  const cairo_matrix_t       *ctm,
+			  const cairo_font_options_t *options);
+
+cairo_public cairo_scaled_font_t *
+cairo_scaled_font_reference (cairo_scaled_font_t *scaled_font);
+
+cairo_public void
+cairo_scaled_font_destroy (cairo_scaled_font_t *scaled_font);
+
+cairo_public unsigned int
+cairo_scaled_font_get_reference_count (cairo_scaled_font_t *scaled_font);
+
+cairo_public cairo_status_t
+cairo_scaled_font_status (cairo_scaled_font_t *scaled_font);
+
+cairo_public cairo_font_type_t
+cairo_scaled_font_get_type (cairo_scaled_font_t *scaled_font);
+
+cairo_public void *
+cairo_scaled_font_get_user_data (cairo_scaled_font_t         *scaled_font,
+				 const cairo_user_data_key_t *key);
+
+cairo_public cairo_status_t
+cairo_scaled_font_set_user_data (cairo_scaled_font_t         *scaled_font,
+				 const cairo_user_data_key_t *key,
+				 void                        *user_data,
+				 cairo_destroy_func_t	      destroy);
+
+cairo_public void
+cairo_scaled_font_extents (cairo_scaled_font_t  *scaled_font,
+			   cairo_font_extents_t *extents);
+
+cairo_public void
+cairo_scaled_font_text_extents (cairo_scaled_font_t  *scaled_font,
+				const char  	     *utf8,
+				cairo_text_extents_t *extents);
+
+cairo_public void
+cairo_scaled_font_glyph_extents (cairo_scaled_font_t   *scaled_font,
+				 const cairo_glyph_t   *glyphs,
+				 int                   num_glyphs,
+				 cairo_text_extents_t  *extents);
+
+cairo_public cairo_status_t
+cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t        *scaled_font,
+				  double		      x,
+				  double		      y,
+				  const char	             *utf8,
+				  int		              utf8_len,
+				  cairo_glyph_t	            **glyphs,
+				  int		             *num_glyphs,
+				  cairo_text_cluster_t      **clusters,
+				  int		             *num_clusters,
+				  cairo_text_cluster_flags_t *cluster_flags);
+
+cairo_public cairo_font_face_t *
+cairo_scaled_font_get_font_face (cairo_scaled_font_t *scaled_font);
+
+cairo_public void
+cairo_scaled_font_get_font_matrix (cairo_scaled_font_t	*scaled_font,
+				   cairo_matrix_t	*font_matrix);
+
+cairo_public void
+cairo_scaled_font_get_ctm (cairo_scaled_font_t	*scaled_font,
+			   cairo_matrix_t	*ctm);
+
+cairo_public void
+cairo_scaled_font_get_scale_matrix (cairo_scaled_font_t	*scaled_font,
+				    cairo_matrix_t	*scale_matrix);
+
+cairo_public void
+cairo_scaled_font_get_font_options (cairo_scaled_font_t		*scaled_font,
+				    cairo_font_options_t	*options);
+
+
+/* Toy fonts */
+
+cairo_public cairo_font_face_t *
+cairo_toy_font_face_create (const char           *family,
+			    cairo_font_slant_t    slant,
+			    cairo_font_weight_t   weight);
+
+cairo_public const char *
+cairo_toy_font_face_get_family (cairo_font_face_t *font_face);
+
+cairo_public cairo_font_slant_t
+cairo_toy_font_face_get_slant (cairo_font_face_t *font_face);
+
+cairo_public cairo_font_weight_t
+cairo_toy_font_face_get_weight (cairo_font_face_t *font_face);
+
+
+/* User fonts */
+
+cairo_public cairo_font_face_t *
+cairo_user_font_face_create (void);
+
+/* User-font method signatures */
+
+/**
+ * cairo_user_scaled_font_init_func_t:
+ * @scaled_font: the scaled-font being created
+ * @cr: a cairo context, in font space
+ * @extents: font extents to fill in, in font space
+ *
+ * #cairo_user_scaled_font_init_func_t is the type of function which is
+ * called when a scaled-font needs to be created for a user font-face.
+ *
+ * The cairo context @cr is not used by the caller, but is prepared in font
+ * space, similar to what the cairo contexts passed to the render_glyph
+ * method will look like.  The callback can use this context for extents
+ * computation for example.  After the callback is called, @cr is checked
+ * for any error status.
+ *
+ * The @extents argument is where the user font sets the font extents for
+ * @scaled_font.  It is in font space, which means that for most cases its
+ * ascent and descent members should add to 1.0.  @extents is preset to
+ * hold a value of 1.0 for ascent, height, and max_x_advance, and 0.0 for
+ * descent and max_y_advance members.
+ *
+ * The callback is optional.  If not set, default font extents as described
+ * in the previous paragraph will be used.
+ *
+ * Note that @scaled_font is not fully initialized at this
+ * point and trying to use it for text operations in the callback will result
+ * in deadlock.
+ *
+ * Returns: %CAIRO_STATUS_SUCCESS upon success, or an error status on error.
+ *
+ * Since: 1.8
+ **/
+typedef cairo_status_t (*cairo_user_scaled_font_init_func_t) (cairo_scaled_font_t  *scaled_font,
+							      cairo_t              *cr,
+							      cairo_font_extents_t *extents);
+
+/**
+ * cairo_user_scaled_font_render_glyph_func_t:
+ * @scaled_font: user scaled-font
+ * @glyph: glyph code to render
+ * @cr: cairo context to draw to, in font space
+ * @extents: glyph extents to fill in, in font space
+ *
+ * #cairo_user_scaled_font_render_glyph_func_t is the type of function which
+ * is called when a user scaled-font needs to render a glyph.
+ *
+ * The callback is mandatory, and expected to draw the glyph with code @glyph to
+ * the cairo context @cr.  @cr is prepared such that the glyph drawing is done in
+ * font space.  That is, the matrix set on @cr is the scale matrix of @scaled_font,
+ * The @extents argument is where the user font sets the font extents for
+ * @scaled_font.  However, if user prefers to draw in user space, they can
+ * achieve that by changing the matrix on @cr.  All cairo rendering operations
+ * to @cr are permitted, however, the result is undefined if any source other
+ * than the default source on @cr is used.  That means, glyph bitmaps should
+ * be rendered using cairo_mask() instead of cairo_paint().
+ *
+ * Other non-default settings on @cr include a font size of 1.0 (given that
+ * it is set up to be in font space), and font options corresponding to
+ * @scaled_font.
+ *
+ * The @extents argument is preset to have <literal>x_bearing</literal>,
+ * <literal>width</literal>, and <literal>y_advance</literal> of zero,
+ * <literal>y_bearing</literal> set to <literal>-font_extents.ascent</literal>,
+ * <literal>height</literal> to <literal>font_extents.ascent+font_extents.descent</literal>,
+ * and <literal>x_advance</literal> to <literal>font_extents.max_x_advance</literal>.
+ * The only field user needs to set in majority of cases is
+ * <literal>x_advance</literal>.
+ * If the <literal>width</literal> field is zero upon the callback returning
+ * (which is its preset value), the glyph extents are automatically computed
+ * based on the drawings done to @cr.  This is in most cases exactly what the
+ * desired behavior is.  However, if for any reason the callback sets the
+ * extents, it must be ink extents, and include the extents of all drawing
+ * done to @cr in the callback.
+ *
+ * Returns: %CAIRO_STATUS_SUCCESS upon success, or
+ * %CAIRO_STATUS_USER_FONT_ERROR or any other error status on error.
+ *
+ * Since: 1.8
+ **/
+typedef cairo_status_t (*cairo_user_scaled_font_render_glyph_func_t) (cairo_scaled_font_t  *scaled_font,
+								      unsigned long         glyph,
+								      cairo_t              *cr,
+								      cairo_text_extents_t *extents);
+
+/**
+ * cairo_user_scaled_font_text_to_glyphs_func_t:
+ * @scaled_font: the scaled-font being created
+ * @utf8: a string of text encoded in UTF-8
+ * @utf8_len: length of @utf8 in bytes
+ * @glyphs: pointer to array of glyphs to fill, in font space
+ * @num_glyphs: pointer to number of glyphs
+ * @clusters: pointer to array of cluster mapping information to fill, or %NULL
+ * @num_clusters: pointer to number of clusters
+ * @cluster_flags: pointer to location to store cluster flags corresponding to the
+ *                 output @clusters
+ *
+ * #cairo_user_scaled_font_text_to_glyphs_func_t is the type of function which
+ * is called to convert input text to an array of glyphs.  This is used by the
+ * cairo_show_text() operation.
+ *
+ * Using this callback the user-font has full control on glyphs and their
+ * positions.  That means, it allows for features like ligatures and kerning,
+ * as well as complex <firstterm>shaping</firstterm> required for scripts like
+ * Arabic and Indic.
+ *
+ * The @num_glyphs argument is preset to the number of glyph entries available
+ * in the @glyphs buffer. If the @glyphs buffer is %NULL, the value of
+ * @num_glyphs will be zero.  If the provided glyph array is too short for
+ * the conversion (or for convenience), a new glyph array may be allocated
+ * using cairo_glyph_allocate() and placed in @glyphs.  Upon return,
+ * @num_glyphs should contain the number of generated glyphs.  If the value
+ * @glyphs points at has changed after the call, the caller will free the
+ * allocated glyph array using cairo_glyph_free().  The caller will also free
+ * the original value of @glyphs, so the callback shouldn't do so.
+ * The callback should populate the glyph indices and positions (in font space)
+ * assuming that the text is to be shown at the origin.
+ *
+ * If @clusters is not %NULL, @num_clusters and @cluster_flags are also
+ * non-%NULL, and cluster mapping should be computed. The semantics of how
+ * cluster array allocation works is similar to the glyph array.  That is,
+ * if @clusters initially points to a non-%NULL value, that array may be used
+ * as a cluster buffer, and @num_clusters points to the number of cluster
+ * entries available there.  If the provided cluster array is too short for
+ * the conversion (or for convenience), a new cluster array may be allocated
+ * using cairo_text_cluster_allocate() and placed in @clusters.  In this case,
+ * the original value of @clusters will still be freed by the caller.  Upon
+ * return, @num_clusters should contain the number of generated clusters.
+ * If the value @clusters points at has changed after the call, the caller
+ * will free the allocated cluster array using cairo_text_cluster_free().
+ *
+ * The callback is optional.  If @num_glyphs is negative upon
+ * the callback returning or if the return value
+ * is %CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED, the unicode_to_glyph callback
+ * is tried.  See #cairo_user_scaled_font_unicode_to_glyph_func_t.
+ *
+ * Note: While cairo does not impose any limitation on glyph indices,
+ * some applications may assume that a glyph index fits in a 16-bit
+ * unsigned integer.  As such, it is advised that user-fonts keep their
+ * glyphs in the 0 to 65535 range.  Furthermore, some applications may
+ * assume that glyph 0 is a special glyph-not-found glyph.  User-fonts
+ * are advised to use glyph 0 for such purposes and do not use that
+ * glyph value for other purposes.
+ *
+ * Returns: %CAIRO_STATUS_SUCCESS upon success,
+ * %CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED if fallback options should be tried,
+ * or %CAIRO_STATUS_USER_FONT_ERROR or any other error status on error.
+ *
+ * Since: 1.8
+ **/
+typedef cairo_status_t (*cairo_user_scaled_font_text_to_glyphs_func_t) (cairo_scaled_font_t        *scaled_font,
+									const char	           *utf8,
+									int		            utf8_len,
+									cairo_glyph_t	          **glyphs,
+									int		           *num_glyphs,
+									cairo_text_cluster_t      **clusters,
+									int		           *num_clusters,
+									cairo_text_cluster_flags_t *cluster_flags);
+
+/**
+ * cairo_user_scaled_font_unicode_to_glyph_func_t:
+ * @scaled_font: the scaled-font being created
+ * @unicode: input unicode character code-point
+ * @glyph_index: output glyph index
+ *
+ * #cairo_user_scaled_font_unicode_to_glyph_func_t is the type of function which
+ * is called to convert an input Unicode character to a single glyph.
+ * This is used by the cairo_show_text() operation.
+ *
+ * This callback is used to provide the same functionality as the
+ * text_to_glyphs callback does (see #cairo_user_scaled_font_text_to_glyphs_func_t)
+ * but has much less control on the output,
+ * in exchange for increased ease of use.  The inherent assumption to using
+ * this callback is that each character maps to one glyph, and that the
+ * mapping is context independent.  It also assumes that glyphs are positioned
+ * according to their advance width.  These mean no ligatures, kerning, or
+ * complex scripts can be implemented using this callback.
+ *
+ * The callback is optional, and only used if text_to_glyphs callback is not
+ * set or fails to return glyphs.  If this callback is not set or if it returns
+ * %CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED, an identity mapping from Unicode
+ * code-points to glyph indices is assumed.
+ *
+ * Note: While cairo does not impose any limitation on glyph indices,
+ * some applications may assume that a glyph index fits in a 16-bit
+ * unsigned integer.  As such, it is advised that user-fonts keep their
+ * glyphs in the 0 to 65535 range.  Furthermore, some applications may
+ * assume that glyph 0 is a special glyph-not-found glyph.  User-fonts
+ * are advised to use glyph 0 for such purposes and do not use that
+ * glyph value for other purposes.
+ *
+ * Returns: %CAIRO_STATUS_SUCCESS upon success,
+ * %CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED if fallback options should be tried,
+ * or %CAIRO_STATUS_USER_FONT_ERROR or any other error status on error.
+ *
+ * Since: 1.8
+ **/
+typedef cairo_status_t (*cairo_user_scaled_font_unicode_to_glyph_func_t) (cairo_scaled_font_t *scaled_font,
+									  unsigned long        unicode,
+									  unsigned long       *glyph_index);
+
+/* User-font method setters */
+
+cairo_public void
+cairo_user_font_face_set_init_func (cairo_font_face_t                  *font_face,
+				    cairo_user_scaled_font_init_func_t  init_func);
+
+cairo_public void
+cairo_user_font_face_set_render_glyph_func (cairo_font_face_t                          *font_face,
+					    cairo_user_scaled_font_render_glyph_func_t  render_glyph_func);
+
+cairo_public void
+cairo_user_font_face_set_text_to_glyphs_func (cairo_font_face_t                            *font_face,
+					      cairo_user_scaled_font_text_to_glyphs_func_t  text_to_glyphs_func);
+
+cairo_public void
+cairo_user_font_face_set_unicode_to_glyph_func (cairo_font_face_t                              *font_face,
+					        cairo_user_scaled_font_unicode_to_glyph_func_t  unicode_to_glyph_func);
+
+/* User-font method getters */
+
+cairo_public cairo_user_scaled_font_init_func_t
+cairo_user_font_face_get_init_func (cairo_font_face_t *font_face);
+
+cairo_public cairo_user_scaled_font_render_glyph_func_t
+cairo_user_font_face_get_render_glyph_func (cairo_font_face_t *font_face);
+
+cairo_public cairo_user_scaled_font_text_to_glyphs_func_t
+cairo_user_font_face_get_text_to_glyphs_func (cairo_font_face_t *font_face);
+
+cairo_public cairo_user_scaled_font_unicode_to_glyph_func_t
+cairo_user_font_face_get_unicode_to_glyph_func (cairo_font_face_t *font_face);
+
+
+/* Query functions */
+
+cairo_public cairo_operator_t
+cairo_get_operator (cairo_t *cr);
+
+cairo_public cairo_pattern_t *
+cairo_get_source (cairo_t *cr);
+
+cairo_public double
+cairo_get_tolerance (cairo_t *cr);
+
+cairo_public cairo_antialias_t
+cairo_get_antialias (cairo_t *cr);
+
+cairo_public cairo_bool_t
+cairo_has_current_point (cairo_t *cr);
+
+cairo_public void
+cairo_get_current_point (cairo_t *cr, double *x, double *y);
+
+cairo_public cairo_fill_rule_t
+cairo_get_fill_rule (cairo_t *cr);
+
+cairo_public double
+cairo_get_line_width (cairo_t *cr);
+
+cairo_public cairo_line_cap_t
+cairo_get_line_cap (cairo_t *cr);
+
+cairo_public cairo_line_join_t
+cairo_get_line_join (cairo_t *cr);
+
+cairo_public double
+cairo_get_miter_limit (cairo_t *cr);
+
+cairo_public int
+cairo_get_dash_count (cairo_t *cr);
+
+cairo_public void
+cairo_get_dash (cairo_t *cr, double *dashes, double *offset);
+
+cairo_public void
+cairo_get_matrix (cairo_t *cr, cairo_matrix_t *matrix);
+
+cairo_public cairo_surface_t *
+cairo_get_target (cairo_t *cr);
+
+cairo_public cairo_surface_t *
+cairo_get_group_target (cairo_t *cr);
+
+/**
+ * cairo_path_data_type_t:
+ * @CAIRO_PATH_MOVE_TO: A move-to operation, since 1.0
+ * @CAIRO_PATH_LINE_TO: A line-to operation, since 1.0
+ * @CAIRO_PATH_CURVE_TO: A curve-to operation, since 1.0
+ * @CAIRO_PATH_CLOSE_PATH: A close-path operation, since 1.0
+ *
+ * #cairo_path_data_t is used to describe the type of one portion
+ * of a path when represented as a #cairo_path_t.
+ * See #cairo_path_data_t for details.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_path_data_type {
+    CAIRO_PATH_MOVE_TO,
+    CAIRO_PATH_LINE_TO,
+    CAIRO_PATH_CURVE_TO,
+    CAIRO_PATH_CLOSE_PATH
+} cairo_path_data_type_t;
+
+/**
+ * cairo_path_data_t:
+ *
+ * #cairo_path_data_t is used to represent the path data inside a
+ * #cairo_path_t.
+ *
+ * The data structure is designed to try to balance the demands of
+ * efficiency and ease-of-use. A path is represented as an array of
+ * #cairo_path_data_t, which is a union of headers and points.
+ *
+ * Each portion of the path is represented by one or more elements in
+ * the array, (one header followed by 0 or more points). The length
+ * value of the header is the number of array elements for the current
+ * portion including the header, (ie. length == 1 + # of points), and
+ * where the number of points for each element type is as follows:
+ *
+ * <programlisting>
+ *     %CAIRO_PATH_MOVE_TO:     1 point
+ *     %CAIRO_PATH_LINE_TO:     1 point
+ *     %CAIRO_PATH_CURVE_TO:    3 points
+ *     %CAIRO_PATH_CLOSE_PATH:  0 points
+ * </programlisting>
+ *
+ * The semantics and ordering of the coordinate values are consistent
+ * with cairo_move_to(), cairo_line_to(), cairo_curve_to(), and
+ * cairo_close_path().
+ *
+ * Here is sample code for iterating through a #cairo_path_t:
+ *
+ * <informalexample><programlisting>
+ *      int i;
+ *      cairo_path_t *path;
+ *      cairo_path_data_t *data;
+ * &nbsp;
+ *      path = cairo_copy_path (cr);
+ * &nbsp;
+ *      for (i=0; i < path->num_data; i += path->data[i].header.length) {
+ *          data = &amp;path->data[i];
+ *          switch (data->header.type) {
+ *          case CAIRO_PATH_MOVE_TO:
+ *              do_move_to_things (data[1].point.x, data[1].point.y);
+ *              break;
+ *          case CAIRO_PATH_LINE_TO:
+ *              do_line_to_things (data[1].point.x, data[1].point.y);
+ *              break;
+ *          case CAIRO_PATH_CURVE_TO:
+ *              do_curve_to_things (data[1].point.x, data[1].point.y,
+ *                                  data[2].point.x, data[2].point.y,
+ *                                  data[3].point.x, data[3].point.y);
+ *              break;
+ *          case CAIRO_PATH_CLOSE_PATH:
+ *              do_close_path_things ();
+ *              break;
+ *          }
+ *      }
+ *      cairo_path_destroy (path);
+ * </programlisting></informalexample>
+ *
+ * As of cairo 1.4, cairo does not mind if there are more elements in
+ * a portion of the path than needed.  Such elements can be used by
+ * users of the cairo API to hold extra values in the path data
+ * structure.  For this reason, it is recommended that applications
+ * always use <literal>data->header.length</literal> to
+ * iterate over the path data, instead of hardcoding the number of
+ * elements for each element type.
+ *
+ * Since: 1.0
+ **/
+typedef union _cairo_path_data_t cairo_path_data_t;
+union _cairo_path_data_t {
+    struct {
+	cairo_path_data_type_t type;
+	int length;
+    } header;
+    struct {
+	double x, y;
+    } point;
+};
+
+/**
+ * cairo_path_t:
+ * @status: the current error status
+ * @data: the elements in the path
+ * @num_data: the number of elements in the data array
+ *
+ * A data structure for holding a path. This data structure serves as
+ * the return value for cairo_copy_path() and
+ * cairo_copy_path_flat() as well the input value for
+ * cairo_append_path().
+ *
+ * See #cairo_path_data_t for hints on how to iterate over the
+ * actual data within the path.
+ *
+ * The num_data member gives the number of elements in the data
+ * array. This number is larger than the number of independent path
+ * portions (defined in #cairo_path_data_type_t), since the data
+ * includes both headers and coordinates for each portion.
+ *
+ * Since: 1.0
+ **/
+typedef struct cairo_path {
+    cairo_status_t status;
+    cairo_path_data_t *data;
+    int num_data;
+} cairo_path_t;
+
+cairo_public cairo_path_t *
+cairo_copy_path (cairo_t *cr);
+
+cairo_public cairo_path_t *
+cairo_copy_path_flat (cairo_t *cr);
+
+cairo_public void
+cairo_append_path (cairo_t		*cr,
+		   const cairo_path_t	*path);
+
+cairo_public void
+cairo_path_destroy (cairo_path_t *path);
+
+/* Error status queries */
+
+cairo_public cairo_status_t
+cairo_status (cairo_t *cr);
+
+cairo_public const char *
+cairo_status_to_string (cairo_status_t status);
+
+/* Backend device manipulation */
+
+cairo_public cairo_device_t *
+cairo_device_reference (cairo_device_t *device);
+
+/**
+ * cairo_device_type_t:
+ * @CAIRO_DEVICE_TYPE_DRM: The device is of type Direct Render Manager, since 1.10
+ * @CAIRO_DEVICE_TYPE_GL: The device is of type OpenGL, since 1.10
+ * @CAIRO_DEVICE_TYPE_SCRIPT: The device is of type script, since 1.10
+ * @CAIRO_DEVICE_TYPE_XCB: The device is of type xcb, since 1.10
+ * @CAIRO_DEVICE_TYPE_XLIB: The device is of type xlib, since 1.10
+ * @CAIRO_DEVICE_TYPE_XML: The device is of type XML, since 1.10
+ * @CAIRO_DEVICE_TYPE_COGL: The device is of type cogl, since 1.12
+ * @CAIRO_DEVICE_TYPE_WIN32: The device is of type win32, since 1.12
+ * @CAIRO_DEVICE_TYPE_INVALID: The device is invalid, since 1.10
+ *
+ * #cairo_device_type_t is used to describe the type of a given
+ * device. The devices types are also known as "backends" within cairo.
+ *
+ * The device type can be queried with cairo_device_get_type()
+ *
+ * The various #cairo_device_t functions can be used with devices of
+ * any type, but some backends also provide type-specific functions
+ * that must only be called with a device of the appropriate
+ * type. These functions have names that begin with
+ * <literal>cairo_<emphasis>type</emphasis>_device</literal> such as
+ * cairo_xcb_device_debug_cap_xrender_version().
+ *
+ * The behavior of calling a type-specific function with a device of
+ * the wrong type is undefined.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.10
+ **/
+typedef enum _cairo_device_type {
+    CAIRO_DEVICE_TYPE_DRM,
+    CAIRO_DEVICE_TYPE_GL,
+    CAIRO_DEVICE_TYPE_SCRIPT,
+    CAIRO_DEVICE_TYPE_XCB,
+    CAIRO_DEVICE_TYPE_XLIB,
+    CAIRO_DEVICE_TYPE_XML,
+    CAIRO_DEVICE_TYPE_COGL,
+    CAIRO_DEVICE_TYPE_WIN32,
+
+    CAIRO_DEVICE_TYPE_INVALID = -1
+} cairo_device_type_t;
+
+cairo_public cairo_device_type_t
+cairo_device_get_type (cairo_device_t *device);
+
+cairo_public cairo_status_t
+cairo_device_status (cairo_device_t *device);
+
+cairo_public cairo_status_t
+cairo_device_acquire (cairo_device_t *device);
+
+cairo_public void
+cairo_device_release (cairo_device_t *device);
+
+cairo_public void
+cairo_device_flush (cairo_device_t *device);
+
+cairo_public void
+cairo_device_finish (cairo_device_t *device);
+
+cairo_public void
+cairo_device_destroy (cairo_device_t *device);
+
+cairo_public unsigned int
+cairo_device_get_reference_count (cairo_device_t *device);
+
+cairo_public void *
+cairo_device_get_user_data (cairo_device_t		 *device,
+			    const cairo_user_data_key_t *key);
+
+cairo_public cairo_status_t
+cairo_device_set_user_data (cairo_device_t		 *device,
+			    const cairo_user_data_key_t *key,
+			    void			 *user_data,
+			    cairo_destroy_func_t	  destroy);
+
+
+/* Surface manipulation */
+
+cairo_public cairo_surface_t *
+cairo_surface_create_similar (cairo_surface_t  *other,
+			      cairo_content_t	content,
+			      int		width,
+			      int		height);
+
+cairo_public cairo_surface_t *
+cairo_surface_create_similar_image (cairo_surface_t  *other,
+				    cairo_format_t    format,
+				    int		width,
+				    int		height);
+
+cairo_public cairo_surface_t *
+cairo_surface_map_to_image (cairo_surface_t  *surface,
+			    const cairo_rectangle_int_t *extents);
+
+cairo_public void
+cairo_surface_unmap_image (cairo_surface_t *surface,
+			   cairo_surface_t *image);
+
+cairo_public cairo_surface_t *
+cairo_surface_create_for_rectangle (cairo_surface_t	*target,
+                                    double		 x,
+                                    double		 y,
+                                    double		 width,
+                                    double		 height);
+
+/**
+ * cairo_surface_observer_mode_t:
+ * @CAIRO_SURFACE_OBSERVER_NORMAL: no recording is done
+ * @CAIRO_SURFACE_OBSERVER_RECORD_OPERATIONS: operations are recorded
+ *
+ * Whether operations should be recorded.
+ *
+ * Since: 1.12
+ **/
+typedef enum {
+	CAIRO_SURFACE_OBSERVER_NORMAL = 0,
+	CAIRO_SURFACE_OBSERVER_RECORD_OPERATIONS = 0x1
+} cairo_surface_observer_mode_t;
+
+cairo_public cairo_surface_t *
+cairo_surface_create_observer (cairo_surface_t *target,
+			       cairo_surface_observer_mode_t mode);
+
+typedef void (*cairo_surface_observer_callback_t) (cairo_surface_t *observer,
+						   cairo_surface_t *target,
+						   void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_paint_callback (cairo_surface_t *abstract_surface,
+					   cairo_surface_observer_callback_t func,
+					   void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_mask_callback (cairo_surface_t *abstract_surface,
+					  cairo_surface_observer_callback_t func,
+					  void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_fill_callback (cairo_surface_t *abstract_surface,
+					  cairo_surface_observer_callback_t func,
+					  void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_stroke_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_glyphs_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_flush_callback (cairo_surface_t *abstract_surface,
+					   cairo_surface_observer_callback_t func,
+					   void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_add_finish_callback (cairo_surface_t *abstract_surface,
+					    cairo_surface_observer_callback_t func,
+					    void *data);
+
+cairo_public cairo_status_t
+cairo_surface_observer_print (cairo_surface_t *surface,
+			      cairo_write_func_t write_func,
+			      void *closure);
+cairo_public double
+cairo_surface_observer_elapsed (cairo_surface_t *surface);
+
+cairo_public cairo_status_t
+cairo_device_observer_print (cairo_device_t *device,
+			     cairo_write_func_t write_func,
+			     void *closure);
+
+cairo_public double
+cairo_device_observer_elapsed (cairo_device_t *device);
+
+cairo_public double
+cairo_device_observer_paint_elapsed (cairo_device_t *device);
+
+cairo_public double
+cairo_device_observer_mask_elapsed (cairo_device_t *device);
+
+cairo_public double
+cairo_device_observer_fill_elapsed (cairo_device_t *device);
+
+cairo_public double
+cairo_device_observer_stroke_elapsed (cairo_device_t *device);
+
+cairo_public double
+cairo_device_observer_glyphs_elapsed (cairo_device_t *device);
+
+cairo_public cairo_surface_t *
+cairo_surface_reference (cairo_surface_t *surface);
+
+cairo_public void
+cairo_surface_finish (cairo_surface_t *surface);
+
+cairo_public void
+cairo_surface_destroy (cairo_surface_t *surface);
+
+cairo_public cairo_device_t *
+cairo_surface_get_device (cairo_surface_t *surface);
+
+cairo_public unsigned int
+cairo_surface_get_reference_count (cairo_surface_t *surface);
+
+cairo_public cairo_status_t
+cairo_surface_status (cairo_surface_t *surface);
+
+/**
+ * cairo_surface_type_t:
+ * @CAIRO_SURFACE_TYPE_IMAGE: The surface is of type image, since 1.2
+ * @CAIRO_SURFACE_TYPE_PDF: The surface is of type pdf, since 1.2
+ * @CAIRO_SURFACE_TYPE_PS: The surface is of type ps, since 1.2
+ * @CAIRO_SURFACE_TYPE_XLIB: The surface is of type xlib, since 1.2
+ * @CAIRO_SURFACE_TYPE_XCB: The surface is of type xcb, since 1.2
+ * @CAIRO_SURFACE_TYPE_GLITZ: The surface is of type glitz, since 1.2
+ * @CAIRO_SURFACE_TYPE_QUARTZ: The surface is of type quartz, since 1.2
+ * @CAIRO_SURFACE_TYPE_WIN32: The surface is of type win32, since 1.2
+ * @CAIRO_SURFACE_TYPE_BEOS: The surface is of type beos, since 1.2
+ * @CAIRO_SURFACE_TYPE_DIRECTFB: The surface is of type directfb, since 1.2
+ * @CAIRO_SURFACE_TYPE_SVG: The surface is of type svg, since 1.2
+ * @CAIRO_SURFACE_TYPE_OS2: The surface is of type os2, since 1.4
+ * @CAIRO_SURFACE_TYPE_WIN32_PRINTING: The surface is a win32 printing surface, since 1.6
+ * @CAIRO_SURFACE_TYPE_QUARTZ_IMAGE: The surface is of type quartz_image, since 1.6
+ * @CAIRO_SURFACE_TYPE_SCRIPT: The surface is of type script, since 1.10
+ * @CAIRO_SURFACE_TYPE_QT: The surface is of type Qt, since 1.10
+ * @CAIRO_SURFACE_TYPE_RECORDING: The surface is of type recording, since 1.10
+ * @CAIRO_SURFACE_TYPE_VG: The surface is a OpenVG surface, since 1.10
+ * @CAIRO_SURFACE_TYPE_GL: The surface is of type OpenGL, since 1.10
+ * @CAIRO_SURFACE_TYPE_DRM: The surface is of type Direct Render Manager, since 1.10
+ * @CAIRO_SURFACE_TYPE_TEE: The surface is of type 'tee' (a multiplexing surface), since 1.10
+ * @CAIRO_SURFACE_TYPE_XML: The surface is of type XML (for debugging), since 1.10
+ * @CAIRO_SURFACE_TYPE_SUBSURFACE: The surface is a subsurface created with
+ *   cairo_surface_create_for_rectangle(), since 1.10
+ * @CAIRO_SURFACE_TYPE_COGL: This surface is of type Cogl, since 1.12
+ *
+ * #cairo_surface_type_t is used to describe the type of a given
+ * surface. The surface types are also known as "backends" or "surface
+ * backends" within cairo.
+ *
+ * The type of a surface is determined by the function used to create
+ * it, which will generally be of the form
+ * <function>cairo_<emphasis>type</emphasis>_surface_create(<!-- -->)</function>,
+ * (though see cairo_surface_create_similar() as well).
+ *
+ * The surface type can be queried with cairo_surface_get_type()
+ *
+ * The various #cairo_surface_t functions can be used with surfaces of
+ * any type, but some backends also provide type-specific functions
+ * that must only be called with a surface of the appropriate
+ * type. These functions have names that begin with
+ * <literal>cairo_<emphasis>type</emphasis>_surface</literal> such as cairo_image_surface_get_width().
+ *
+ * The behavior of calling a type-specific function with a surface of
+ * the wrong type is undefined.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.2
+ **/
+typedef enum _cairo_surface_type {
+    CAIRO_SURFACE_TYPE_IMAGE,
+    CAIRO_SURFACE_TYPE_PDF,
+    CAIRO_SURFACE_TYPE_PS,
+    CAIRO_SURFACE_TYPE_XLIB,
+    CAIRO_SURFACE_TYPE_XCB,
+    CAIRO_SURFACE_TYPE_GLITZ,
+    CAIRO_SURFACE_TYPE_QUARTZ,
+    CAIRO_SURFACE_TYPE_WIN32,
+    CAIRO_SURFACE_TYPE_BEOS,
+    CAIRO_SURFACE_TYPE_DIRECTFB,
+    CAIRO_SURFACE_TYPE_SVG,
+    CAIRO_SURFACE_TYPE_OS2,
+    CAIRO_SURFACE_TYPE_WIN32_PRINTING,
+    CAIRO_SURFACE_TYPE_QUARTZ_IMAGE,
+    CAIRO_SURFACE_TYPE_SCRIPT,
+    CAIRO_SURFACE_TYPE_QT,
+    CAIRO_SURFACE_TYPE_RECORDING,
+    CAIRO_SURFACE_TYPE_VG,
+    CAIRO_SURFACE_TYPE_GL,
+    CAIRO_SURFACE_TYPE_DRM,
+    CAIRO_SURFACE_TYPE_TEE,
+    CAIRO_SURFACE_TYPE_XML,
+    CAIRO_SURFACE_TYPE_SKIA,
+    CAIRO_SURFACE_TYPE_SUBSURFACE,
+    CAIRO_SURFACE_TYPE_COGL
+} cairo_surface_type_t;
+
+cairo_public cairo_surface_type_t
+cairo_surface_get_type (cairo_surface_t *surface);
+
+cairo_public cairo_content_t
+cairo_surface_get_content (cairo_surface_t *surface);
+
+#if CAIRO_HAS_PNG_FUNCTIONS
+
+cairo_public cairo_status_t
+cairo_surface_write_to_png (cairo_surface_t	*surface,
+			    const char		*filename);
+
+cairo_public cairo_status_t
+cairo_surface_write_to_png_stream (cairo_surface_t	*surface,
+				   cairo_write_func_t	write_func,
+				   void			*closure);
+
+#endif
+
+cairo_public void *
+cairo_surface_get_user_data (cairo_surface_t		 *surface,
+			     const cairo_user_data_key_t *key);
+
+cairo_public cairo_status_t
+cairo_surface_set_user_data (cairo_surface_t		 *surface,
+			     const cairo_user_data_key_t *key,
+			     void			 *user_data,
+			     cairo_destroy_func_t	 destroy);
+
+#define CAIRO_MIME_TYPE_JPEG "image/jpeg"
+#define CAIRO_MIME_TYPE_PNG "image/png"
+#define CAIRO_MIME_TYPE_JP2 "image/jp2"
+#define CAIRO_MIME_TYPE_URI "text/x-uri"
+#define CAIRO_MIME_TYPE_UNIQUE_ID "application/x-cairo.uuid"
+#define CAIRO_MIME_TYPE_JBIG2 "application/x-cairo.jbig2"
+#define CAIRO_MIME_TYPE_JBIG2_GLOBAL "application/x-cairo.jbig2-global"
+#define CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID "application/x-cairo.jbig2-global-id"
+#define CAIRO_MIME_TYPE_CCITT_FAX "image/g3fax"
+#define CAIRO_MIME_TYPE_CCITT_FAX_PARAMS "application/x-cairo.ccitt.params"
+#define CAIRO_MIME_TYPE_EPS "application/postscript"
+#define CAIRO_MIME_TYPE_EPS_PARAMS "application/x-cairo.eps.params"
+
+cairo_public void
+cairo_surface_get_mime_data (cairo_surface_t		*surface,
+                             const char			*mime_type,
+                             const unsigned char       **data,
+                             unsigned long		*length);
+
+cairo_public cairo_status_t
+cairo_surface_set_mime_data (cairo_surface_t		*surface,
+                             const char			*mime_type,
+                             const unsigned char	*data,
+                             unsigned long		 length,
+			     cairo_destroy_func_t	 destroy,
+			     void			*closure);
+
+cairo_public cairo_bool_t
+cairo_surface_supports_mime_type (cairo_surface_t		*surface,
+				  const char		        *mime_type);
+
+cairo_public void
+cairo_surface_get_font_options (cairo_surface_t      *surface,
+				cairo_font_options_t *options);
+
+cairo_public void
+cairo_surface_flush (cairo_surface_t *surface);
+
+cairo_public void
+cairo_surface_mark_dirty (cairo_surface_t *surface);
+
+cairo_public void
+cairo_surface_mark_dirty_rectangle (cairo_surface_t *surface,
+				    int              x,
+				    int              y,
+				    int              width,
+				    int              height);
+
+cairo_public void
+cairo_surface_set_device_scale (cairo_surface_t *surface,
+				double           x_scale,
+				double           y_scale);
+
+cairo_public void
+cairo_surface_get_device_scale (cairo_surface_t *surface,
+				double          *x_scale,
+				double          *y_scale);
+
+cairo_public void
+cairo_surface_set_device_offset (cairo_surface_t *surface,
+				 double           x_offset,
+				 double           y_offset);
+
+cairo_public void
+cairo_surface_get_device_offset (cairo_surface_t *surface,
+				 double          *x_offset,
+				 double          *y_offset);
+
+cairo_public void
+cairo_surface_set_fallback_resolution (cairo_surface_t	*surface,
+				       double		 x_pixels_per_inch,
+				       double		 y_pixels_per_inch);
+
+cairo_public void
+cairo_surface_get_fallback_resolution (cairo_surface_t	*surface,
+				       double		*x_pixels_per_inch,
+				       double		*y_pixels_per_inch);
+
+cairo_public void
+cairo_surface_copy_page (cairo_surface_t *surface);
+
+cairo_public void
+cairo_surface_show_page (cairo_surface_t *surface);
+
+cairo_public cairo_bool_t
+cairo_surface_has_show_text_glyphs (cairo_surface_t *surface);
+
+/* Image-surface functions */
+
+cairo_public cairo_surface_t *
+cairo_image_surface_create (cairo_format_t	format,
+			    int			width,
+			    int			height);
+
+cairo_public int
+cairo_format_stride_for_width (cairo_format_t	format,
+			       int		width);
+
+cairo_public cairo_surface_t *
+cairo_image_surface_create_for_data (unsigned char	       *data,
+				     cairo_format_t		format,
+				     int			width,
+				     int			height,
+				     int			stride);
+
+cairo_public unsigned char *
+cairo_image_surface_get_data (cairo_surface_t *surface);
+
+cairo_public cairo_format_t
+cairo_image_surface_get_format (cairo_surface_t *surface);
+
+cairo_public int
+cairo_image_surface_get_width (cairo_surface_t *surface);
+
+cairo_public int
+cairo_image_surface_get_height (cairo_surface_t *surface);
+
+cairo_public int
+cairo_image_surface_get_stride (cairo_surface_t *surface);
+
+#if CAIRO_HAS_PNG_FUNCTIONS
+
+cairo_public cairo_surface_t *
+cairo_image_surface_create_from_png (const char	*filename);
+
+cairo_public cairo_surface_t *
+cairo_image_surface_create_from_png_stream (cairo_read_func_t	read_func,
+					    void		*closure);
+
+#endif
+
+/* Recording-surface functions */
+
+cairo_public cairo_surface_t *
+cairo_recording_surface_create (cairo_content_t		 content,
+                                const cairo_rectangle_t *extents);
+
+cairo_public void
+cairo_recording_surface_ink_extents (cairo_surface_t *surface,
+                                     double *x0,
+                                     double *y0,
+                                     double *width,
+                                     double *height);
+
+cairo_public cairo_bool_t
+cairo_recording_surface_get_extents (cairo_surface_t *surface,
+				     cairo_rectangle_t *extents);
+
+/* raster-source pattern (callback) functions */
+
+/**
+ * cairo_raster_source_acquire_func_t:
+ * @pattern: the pattern being rendered from
+ * @callback_data: the user data supplied during creation
+ * @target: the rendering target surface
+ * @extents: rectangular region of interest in pixels in sample space
+ *
+ * #cairo_raster_source_acquire_func_t is the type of function which is
+ * called when a pattern is being rendered from. It should create a surface
+ * that provides the pixel data for the region of interest as defined by
+ * extents, though the surface itself does not have to be limited to that
+ * area. For convenience the surface should probably be of image type,
+ * created with cairo_surface_create_similar_image() for the target (which
+ * enables the number of copies to be reduced during transfer to the
+ * device). Another option, might be to return a similar surface to the
+ * target for explicit handling by the application of a set of cached sources
+ * on the device. The region of sample data provided should be defined using
+ * cairo_surface_set_device_offset() to specify the top-left corner of the
+ * sample data (along with width and height of the surface).
+ *
+ * Returns: a #cairo_surface_t
+ *
+ * Since: 1.12
+ **/
+typedef cairo_surface_t *
+(*cairo_raster_source_acquire_func_t) (cairo_pattern_t *pattern,
+				       void *callback_data,
+				       cairo_surface_t *target,
+				       const cairo_rectangle_int_t *extents);
+
+/**
+ * cairo_raster_source_release_func_t:
+ * @pattern: the pattern being rendered from
+ * @callback_data: the user data supplied during creation
+ * @surface: the surface created during acquire
+ *
+ * #cairo_raster_source_release_func_t is the type of function which is
+ * called when the pixel data is no longer being access by the pattern
+ * for the rendering operation. Typically this function will simply
+ * destroy the surface created during acquire.
+ *
+ * Since: 1.12
+ **/
+typedef void
+(*cairo_raster_source_release_func_t) (cairo_pattern_t *pattern,
+				       void *callback_data,
+				       cairo_surface_t *surface);
+
+/**
+ * cairo_raster_source_snapshot_func_t:
+ * @pattern: the pattern being rendered from
+ * @callback_data: the user data supplied during creation
+ *
+ * #cairo_raster_source_snapshot_func_t is the type of function which is
+ * called when the pixel data needs to be preserved for later use
+ * during printing. This pattern will be accessed again later, and it
+ * is expected to provide the pixel data that was current at the time
+ * of snapshotting.
+ *
+ * Return value: CAIRO_STATUS_SUCCESS on success, or one of the
+ * #cairo_status_t error codes for failure.
+ *
+ * Since: 1.12
+ **/
+typedef cairo_status_t
+(*cairo_raster_source_snapshot_func_t) (cairo_pattern_t *pattern,
+					void *callback_data);
+
+/**
+ * cairo_raster_source_copy_func_t:
+ * @pattern: the #cairo_pattern_t that was copied to
+ * @callback_data: the user data supplied during creation
+ * @other: the #cairo_pattern_t being used as the source for the copy
+ *
+ * #cairo_raster_source_copy_func_t is the type of function which is
+ * called when the pattern gets copied as a normal part of rendering.
+ *
+ * Return value: CAIRO_STATUS_SUCCESS on success, or one of the
+ * #cairo_status_t error codes for failure.
+ *
+ * Since: 1.12
+ **/
+typedef cairo_status_t
+(*cairo_raster_source_copy_func_t) (cairo_pattern_t *pattern,
+				    void *callback_data,
+				    const cairo_pattern_t *other);
+
+/**
+ * cairo_raster_source_finish_func_t:
+ * @pattern: the pattern being rendered from
+ * @callback_data: the user data supplied during creation
+ *
+ * #cairo_raster_source_finish_func_t is the type of function which is
+ * called when the pattern (or a copy thereof) is no longer required.
+ *
+ * Since: 1.12
+ **/
+typedef void
+(*cairo_raster_source_finish_func_t) (cairo_pattern_t *pattern,
+				      void *callback_data);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_raster_source (void *user_data,
+				    cairo_content_t content,
+				    int width, int height);
+
+cairo_public void
+cairo_raster_source_pattern_set_callback_data (cairo_pattern_t *pattern,
+					       void *data);
+
+cairo_public void *
+cairo_raster_source_pattern_get_callback_data (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_raster_source_pattern_set_acquire (cairo_pattern_t *pattern,
+					 cairo_raster_source_acquire_func_t acquire,
+					 cairo_raster_source_release_func_t release);
+
+cairo_public void
+cairo_raster_source_pattern_get_acquire (cairo_pattern_t *pattern,
+					 cairo_raster_source_acquire_func_t *acquire,
+					 cairo_raster_source_release_func_t *release);
+cairo_public void
+cairo_raster_source_pattern_set_snapshot (cairo_pattern_t *pattern,
+					  cairo_raster_source_snapshot_func_t snapshot);
+
+cairo_public cairo_raster_source_snapshot_func_t
+cairo_raster_source_pattern_get_snapshot (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_raster_source_pattern_set_copy (cairo_pattern_t *pattern,
+				      cairo_raster_source_copy_func_t copy);
+
+cairo_public cairo_raster_source_copy_func_t
+cairo_raster_source_pattern_get_copy (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_raster_source_pattern_set_finish (cairo_pattern_t *pattern,
+					cairo_raster_source_finish_func_t finish);
+
+cairo_public cairo_raster_source_finish_func_t
+cairo_raster_source_pattern_get_finish (cairo_pattern_t *pattern);
+
+/* Pattern creation functions */
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_rgb (double red, double green, double blue);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_rgba (double red, double green, double blue,
+			   double alpha);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_for_surface (cairo_surface_t *surface);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_linear (double x0, double y0,
+			     double x1, double y1);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_radial (double cx0, double cy0, double radius0,
+			     double cx1, double cy1, double radius1);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_create_mesh (void);
+
+cairo_public cairo_pattern_t *
+cairo_pattern_reference (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_pattern_destroy (cairo_pattern_t *pattern);
+
+cairo_public unsigned int
+cairo_pattern_get_reference_count (cairo_pattern_t *pattern);
+
+cairo_public cairo_status_t
+cairo_pattern_status (cairo_pattern_t *pattern);
+
+cairo_public void *
+cairo_pattern_get_user_data (cairo_pattern_t		 *pattern,
+			     const cairo_user_data_key_t *key);
+
+cairo_public cairo_status_t
+cairo_pattern_set_user_data (cairo_pattern_t		 *pattern,
+			     const cairo_user_data_key_t *key,
+			     void			 *user_data,
+			     cairo_destroy_func_t	  destroy);
+
+/**
+ * cairo_pattern_type_t:
+ * @CAIRO_PATTERN_TYPE_SOLID: The pattern is a solid (uniform)
+ * color. It may be opaque or translucent, since 1.2.
+ * @CAIRO_PATTERN_TYPE_SURFACE: The pattern is a based on a surface (an image), since 1.2.
+ * @CAIRO_PATTERN_TYPE_LINEAR: The pattern is a linear gradient, since 1.2.
+ * @CAIRO_PATTERN_TYPE_RADIAL: The pattern is a radial gradient, since 1.2.
+ * @CAIRO_PATTERN_TYPE_MESH: The pattern is a mesh, since 1.12.
+ * @CAIRO_PATTERN_TYPE_RASTER_SOURCE: The pattern is a user pattern providing raster data, since 1.12.
+ *
+ * #cairo_pattern_type_t is used to describe the type of a given pattern.
+ *
+ * The type of a pattern is determined by the function used to create
+ * it. The cairo_pattern_create_rgb() and cairo_pattern_create_rgba()
+ * functions create SOLID patterns. The remaining
+ * cairo_pattern_create<!-- --> functions map to pattern types in obvious
+ * ways.
+ *
+ * The pattern type can be queried with cairo_pattern_get_type()
+ *
+ * Most #cairo_pattern_t functions can be called with a pattern of any
+ * type, (though trying to change the extend or filter for a solid
+ * pattern will have no effect). A notable exception is
+ * cairo_pattern_add_color_stop_rgb() and
+ * cairo_pattern_add_color_stop_rgba() which must only be called with
+ * gradient patterns (either LINEAR or RADIAL). Otherwise the pattern
+ * will be shutdown and put into an error state.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.2
+ **/
+typedef enum _cairo_pattern_type {
+    CAIRO_PATTERN_TYPE_SOLID,
+    CAIRO_PATTERN_TYPE_SURFACE,
+    CAIRO_PATTERN_TYPE_LINEAR,
+    CAIRO_PATTERN_TYPE_RADIAL,
+    CAIRO_PATTERN_TYPE_MESH,
+    CAIRO_PATTERN_TYPE_RASTER_SOURCE
+} cairo_pattern_type_t;
+
+cairo_public cairo_pattern_type_t
+cairo_pattern_get_type (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_pattern_add_color_stop_rgb (cairo_pattern_t *pattern,
+				  double offset,
+				  double red, double green, double blue);
+
+cairo_public void
+cairo_pattern_add_color_stop_rgba (cairo_pattern_t *pattern,
+				   double offset,
+				   double red, double green, double blue,
+				   double alpha);
+
+cairo_public void
+cairo_mesh_pattern_begin_patch (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_mesh_pattern_end_patch (cairo_pattern_t *pattern);
+
+cairo_public void
+cairo_mesh_pattern_curve_to (cairo_pattern_t *pattern,
+			     double x1, double y1,
+			     double x2, double y2,
+			     double x3, double y3);
+
+cairo_public void
+cairo_mesh_pattern_line_to (cairo_pattern_t *pattern,
+			    double x, double y);
+
+cairo_public void
+cairo_mesh_pattern_move_to (cairo_pattern_t *pattern,
+			    double x, double y);
+
+cairo_public void
+cairo_mesh_pattern_set_control_point (cairo_pattern_t *pattern,
+				      unsigned int point_num,
+				      double x, double y);
+
+cairo_public void
+cairo_mesh_pattern_set_corner_color_rgb (cairo_pattern_t *pattern,
+					 unsigned int corner_num,
+					 double red, double green, double blue);
+
+cairo_public void
+cairo_mesh_pattern_set_corner_color_rgba (cairo_pattern_t *pattern,
+					  unsigned int corner_num,
+					  double red, double green, double blue,
+					  double alpha);
+
+cairo_public void
+cairo_pattern_set_matrix (cairo_pattern_t      *pattern,
+			  const cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_pattern_get_matrix (cairo_pattern_t *pattern,
+			  cairo_matrix_t  *matrix);
+
+/**
+ * cairo_extend_t:
+ * @CAIRO_EXTEND_NONE: pixels outside of the source pattern
+ *   are fully transparent (Since 1.0)
+ * @CAIRO_EXTEND_REPEAT: the pattern is tiled by repeating (Since 1.0)
+ * @CAIRO_EXTEND_REFLECT: the pattern is tiled by reflecting
+ *   at the edges (Since 1.0; but only implemented for surface patterns since 1.6)
+ * @CAIRO_EXTEND_PAD: pixels outside of the pattern copy
+ *   the closest pixel from the source (Since 1.2; but only
+ *   implemented for surface patterns since 1.6)
+ *
+ * #cairo_extend_t is used to describe how pattern color/alpha will be
+ * determined for areas "outside" the pattern's natural area, (for
+ * example, outside the surface bounds or outside the gradient
+ * geometry).
+ *
+ * Mesh patterns are not affected by the extend mode.
+ *
+ * The default extend mode is %CAIRO_EXTEND_NONE for surface patterns
+ * and %CAIRO_EXTEND_PAD for gradient patterns.
+ *
+ * New entries may be added in future versions.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_extend {
+    CAIRO_EXTEND_NONE,
+    CAIRO_EXTEND_REPEAT,
+    CAIRO_EXTEND_REFLECT,
+    CAIRO_EXTEND_PAD
+} cairo_extend_t;
+
+cairo_public void
+cairo_pattern_set_extend (cairo_pattern_t *pattern, cairo_extend_t extend);
+
+cairo_public cairo_extend_t
+cairo_pattern_get_extend (cairo_pattern_t *pattern);
+
+/**
+ * cairo_filter_t:
+ * @CAIRO_FILTER_FAST: A high-performance filter, with quality similar
+ *     to %CAIRO_FILTER_NEAREST (Since 1.0)
+ * @CAIRO_FILTER_GOOD: A reasonable-performance filter, with quality
+ *     similar to %CAIRO_FILTER_BILINEAR (Since 1.0)
+ * @CAIRO_FILTER_BEST: The highest-quality available, performance may
+ *     not be suitable for interactive use. (Since 1.0)
+ * @CAIRO_FILTER_NEAREST: Nearest-neighbor filtering (Since 1.0)
+ * @CAIRO_FILTER_BILINEAR: Linear interpolation in two dimensions (Since 1.0)
+ * @CAIRO_FILTER_GAUSSIAN: This filter value is currently
+ *     unimplemented, and should not be used in current code. (Since 1.0)
+ *
+ * #cairo_filter_t is used to indicate what filtering should be
+ * applied when reading pixel values from patterns. See
+ * cairo_pattern_set_filter() for indicating the desired filter to be
+ * used with a particular pattern.
+ *
+ * Since: 1.0
+ **/
+typedef enum _cairo_filter {
+    CAIRO_FILTER_FAST,
+    CAIRO_FILTER_GOOD,
+    CAIRO_FILTER_BEST,
+    CAIRO_FILTER_NEAREST,
+    CAIRO_FILTER_BILINEAR,
+    CAIRO_FILTER_GAUSSIAN
+} cairo_filter_t;
+
+cairo_public void
+cairo_pattern_set_filter (cairo_pattern_t *pattern, cairo_filter_t filter);
+
+cairo_public cairo_filter_t
+cairo_pattern_get_filter (cairo_pattern_t *pattern);
+
+cairo_public cairo_status_t
+cairo_pattern_get_rgba (cairo_pattern_t *pattern,
+			double *red, double *green,
+			double *blue, double *alpha);
+
+cairo_public cairo_status_t
+cairo_pattern_get_surface (cairo_pattern_t *pattern,
+			   cairo_surface_t **surface);
+
+
+cairo_public cairo_status_t
+cairo_pattern_get_color_stop_rgba (cairo_pattern_t *pattern,
+				   int index, double *offset,
+				   double *red, double *green,
+				   double *blue, double *alpha);
+
+cairo_public cairo_status_t
+cairo_pattern_get_color_stop_count (cairo_pattern_t *pattern,
+				    int *count);
+
+cairo_public cairo_status_t
+cairo_pattern_get_linear_points (cairo_pattern_t *pattern,
+				 double *x0, double *y0,
+				 double *x1, double *y1);
+
+cairo_public cairo_status_t
+cairo_pattern_get_radial_circles (cairo_pattern_t *pattern,
+				  double *x0, double *y0, double *r0,
+				  double *x1, double *y1, double *r1);
+
+cairo_public cairo_status_t
+cairo_mesh_pattern_get_patch_count (cairo_pattern_t *pattern,
+				    unsigned int *count);
+
+cairo_public cairo_path_t *
+cairo_mesh_pattern_get_path (cairo_pattern_t *pattern,
+			     unsigned int patch_num);
+
+cairo_public cairo_status_t
+cairo_mesh_pattern_get_corner_color_rgba (cairo_pattern_t *pattern,
+					  unsigned int patch_num,
+					  unsigned int corner_num,
+					  double *red, double *green,
+					  double *blue, double *alpha);
+
+cairo_public cairo_status_t
+cairo_mesh_pattern_get_control_point (cairo_pattern_t *pattern,
+				      unsigned int patch_num,
+				      unsigned int point_num,
+				      double *x, double *y);
+
+/* Matrix functions */
+
+cairo_public void
+cairo_matrix_init (cairo_matrix_t *matrix,
+		   double  xx, double  yx,
+		   double  xy, double  yy,
+		   double  x0, double  y0);
+
+cairo_public void
+cairo_matrix_init_identity (cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_matrix_init_translate (cairo_matrix_t *matrix,
+			     double tx, double ty);
+
+cairo_public void
+cairo_matrix_init_scale (cairo_matrix_t *matrix,
+			 double sx, double sy);
+
+cairo_public void
+cairo_matrix_init_rotate (cairo_matrix_t *matrix,
+			  double radians);
+
+cairo_public void
+cairo_matrix_translate (cairo_matrix_t *matrix, double tx, double ty);
+
+cairo_public void
+cairo_matrix_scale (cairo_matrix_t *matrix, double sx, double sy);
+
+cairo_public void
+cairo_matrix_rotate (cairo_matrix_t *matrix, double radians);
+
+cairo_public cairo_status_t
+cairo_matrix_invert (cairo_matrix_t *matrix);
+
+cairo_public void
+cairo_matrix_multiply (cairo_matrix_t	    *result,
+		       const cairo_matrix_t *a,
+		       const cairo_matrix_t *b);
+
+cairo_public void
+cairo_matrix_transform_distance (const cairo_matrix_t *matrix,
+				 double *dx, double *dy);
+
+cairo_public void
+cairo_matrix_transform_point (const cairo_matrix_t *matrix,
+			      double *x, double *y);
+
+/* Region functions */
+
+/**
+ * cairo_region_t:
+ *
+ * A #cairo_region_t represents a set of integer-aligned rectangles.
+ *
+ * It allows set-theoretical operations like cairo_region_union() and
+ * cairo_region_intersect() to be performed on them.
+ *
+ * Memory management of #cairo_region_t is done with
+ * cairo_region_reference() and cairo_region_destroy().
+ *
+ * Since: 1.10
+ **/
+typedef struct _cairo_region cairo_region_t;
+
+/**
+ * cairo_region_overlap_t:
+ * @CAIRO_REGION_OVERLAP_IN: The contents are entirely inside the region. (Since 1.10)
+ * @CAIRO_REGION_OVERLAP_OUT: The contents are entirely outside the region. (Since 1.10)
+ * @CAIRO_REGION_OVERLAP_PART: The contents are partially inside and
+ *     partially outside the region. (Since 1.10)
+ *
+ * Used as the return value for cairo_region_contains_rectangle().
+ *
+ * Since: 1.10
+ **/
+typedef enum _cairo_region_overlap {
+    CAIRO_REGION_OVERLAP_IN,		/* completely inside region */
+    CAIRO_REGION_OVERLAP_OUT,		/* completely outside region */
+    CAIRO_REGION_OVERLAP_PART		/* partly inside region */
+} cairo_region_overlap_t;
+
+cairo_public cairo_region_t *
+cairo_region_create (void);
+
+cairo_public cairo_region_t *
+cairo_region_create_rectangle (const cairo_rectangle_int_t *rectangle);
+
+cairo_public cairo_region_t *
+cairo_region_create_rectangles (const cairo_rectangle_int_t *rects,
+				int count);
+
+cairo_public cairo_region_t *
+cairo_region_copy (const cairo_region_t *original);
+
+cairo_public cairo_region_t *
+cairo_region_reference (cairo_region_t *region);
+
+cairo_public void
+cairo_region_destroy (cairo_region_t *region);
+
+cairo_public cairo_bool_t
+cairo_region_equal (const cairo_region_t *a, const cairo_region_t *b);
+
+cairo_public cairo_status_t
+cairo_region_status (const cairo_region_t *region);
+
+cairo_public void
+cairo_region_get_extents (const cairo_region_t        *region,
+			  cairo_rectangle_int_t *extents);
+
+cairo_public int
+cairo_region_num_rectangles (const cairo_region_t *region);
+
+cairo_public void
+cairo_region_get_rectangle (const cairo_region_t  *region,
+			    int                    nth,
+			    cairo_rectangle_int_t *rectangle);
+
+cairo_public cairo_bool_t
+cairo_region_is_empty (const cairo_region_t *region);
+
+cairo_public cairo_region_overlap_t
+cairo_region_contains_rectangle (const cairo_region_t *region,
+				 const cairo_rectangle_int_t *rectangle);
+
+cairo_public cairo_bool_t
+cairo_region_contains_point (const cairo_region_t *region, int x, int y);
+
+cairo_public void
+cairo_region_translate (cairo_region_t *region, int dx, int dy);
+
+cairo_public cairo_status_t
+cairo_region_subtract (cairo_region_t *dst, const cairo_region_t *other);
+
+cairo_public cairo_status_t
+cairo_region_subtract_rectangle (cairo_region_t *dst,
+				 const cairo_rectangle_int_t *rectangle);
+
+cairo_public cairo_status_t
+cairo_region_intersect (cairo_region_t *dst, const cairo_region_t *other);
+
+cairo_public cairo_status_t
+cairo_region_intersect_rectangle (cairo_region_t *dst,
+				  const cairo_rectangle_int_t *rectangle);
+
+cairo_public cairo_status_t
+cairo_region_union (cairo_region_t *dst, const cairo_region_t *other);
+
+cairo_public cairo_status_t
+cairo_region_union_rectangle (cairo_region_t *dst,
+			      const cairo_rectangle_int_t *rectangle);
+
+cairo_public cairo_status_t
+cairo_region_xor (cairo_region_t *dst, const cairo_region_t *other);
+
+cairo_public cairo_status_t
+cairo_region_xor_rectangle (cairo_region_t *dst,
+			    const cairo_rectangle_int_t *rectangle);
+
+/* Functions to be used while debugging (not intended for use in production code) */
+cairo_public void
+cairo_debug_reset_static_data (void);
+
+
+CAIRO_END_DECLS
+
+#endif /* CAIRO_H */
diff --git a/libs/cairo-1.16.0/src/cairo.pc.in b/libs/cairo-1.16.0/src/cairo.pc.in
new file mode 100644
index 0000000..b361edf
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo.pc.in
@@ -0,0 +1,13 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: cairo
+Description: Multi-platform 2D graphics library
+Version: @VERSION@
+
+@PKGCONFIG_REQUIRES@: @CAIRO_REQUIRES@
+Libs: -L${libdir} -lcairo
+Libs.private: @CAIRO_NONPKGCONFIG_LIBS@
+Cflags: -I${includedir}/cairo
diff --git a/libs/cairo-1.16.0/src/cairoint.h b/libs/cairo-1.16.0/src/cairoint.h
new file mode 100644
index 0000000..cfae18c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairoint.h
@@ -0,0 +1,2149 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ */
+
+/*
+ * These definitions are solely for use by the implementation of cairo
+ * and constitute no kind of standard.  If you need any of these
+ * functions, please drop me a note.  Either the library needs new
+ * functionality, or there's a way to do what you need using the
+ * existing published interfaces. cworth@cworth.org
+ */
+
+#ifndef _CAIROINT_H_
+#define _CAIROINT_H_
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef _MSC_VER
+#define cairo_public __declspec(dllexport)
+#endif
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stddef.h>
+
+#ifdef _MSC_VER
+#define _USE_MATH_DEFINES
+#endif
+#include <math.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include "cairo.h"
+#include <pixman.h>
+
+#include "cairo-compiler-private.h"
+#include "cairo-error-private.h"
+
+#if CAIRO_HAS_PDF_SURFACE    || \
+    CAIRO_HAS_PS_SURFACE     || \
+    CAIRO_HAS_SCRIPT_SURFACE || \
+    CAIRO_HAS_XML_SURFACE
+#define CAIRO_HAS_DEFLATE_STREAM 1
+#endif
+
+#if CAIRO_HAS_PS_SURFACE  || \
+    CAIRO_HAS_PDF_SURFACE || \
+    CAIRO_HAS_SVG_SURFACE || \
+    CAIRO_HAS_WIN32_SURFACE
+#define CAIRO_HAS_FONT_SUBSET 1
+#endif
+
+#if CAIRO_HAS_PS_SURFACE  || \
+    CAIRO_HAS_PDF_SURFACE || \
+    CAIRO_HAS_FONT_SUBSET
+#define CAIRO_HAS_PDF_OPERATORS 1
+#endif
+
+CAIRO_BEGIN_DECLS
+
+#if _WIN32 && !_WIN32_WCE /* Permissions on WinCE? No worries! */
+cairo_private FILE *
+_cairo_win32_tmpfile (void);
+#define tmpfile() _cairo_win32_tmpfile()
+#endif
+
+#undef MIN
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+
+#undef MAX
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+#if _XOPEN_SOURCE >= 600 || defined (_ISOC99_SOURCE)
+#define ISFINITE(x) isfinite (x)
+#else
+#define ISFINITE(x) ((x) * (x) >= 0.) /* check for NaNs */
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#ifndef M_SQRT2
+#define M_SQRT2 1.41421356237309504880
+#endif
+
+#ifndef M_SQRT1_2
+#define M_SQRT1_2 0.707106781186547524400844362104849039
+#endif
+
+#undef  ARRAY_LENGTH
+#define ARRAY_LENGTH(__array) ((int) (sizeof (__array) / sizeof (__array[0])))
+
+#undef STRINGIFY
+#undef STRINGIFY_ARG
+#define STRINGIFY(macro_or_string)    STRINGIFY_ARG (macro_or_string)
+#define STRINGIFY_ARG(contents)       #contents
+
+#if defined (__GNUC__)
+#define cairo_container_of(ptr, type, member) ({ \
+    const __typeof__ (((type *) 0)->member) *mptr__ = (ptr); \
+    (type *) ((char *) mptr__ - offsetof (type, member)); \
+})
+#else
+#define cairo_container_of(ptr, type, member) \
+    ((type *)((char *) (ptr) - (char *) &((type *)0)->member))
+#endif
+
+
+#define ASSERT_NOT_REACHED		\
+do {					\
+    assert (!"reached");		\
+} while (0)
+#define COMPILE_TIME_ASSERT1(condition, line)		\
+    typedef int compile_time_assertion_at_line_##line##_failed [(condition)?1:-1]
+#define COMPILE_TIME_ASSERT0(condition, line)	COMPILE_TIME_ASSERT1(condition, line)
+#define COMPILE_TIME_ASSERT(condition)		COMPILE_TIME_ASSERT0(condition, __LINE__)
+
+#define CAIRO_ALPHA_IS_CLEAR(alpha) ((alpha) <= ((double)0x00ff / (double)0xffff))
+#define CAIRO_ALPHA_SHORT_IS_CLEAR(alpha) ((alpha) <= 0x00ff)
+
+#define CAIRO_ALPHA_IS_OPAQUE(alpha) ((alpha) >= ((double)0xff00 / (double)0xffff))
+#define CAIRO_ALPHA_SHORT_IS_OPAQUE(alpha) ((alpha) >= 0xff00)
+#define CAIRO_ALPHA_IS_ZERO(alpha) ((alpha) <= 0.0)
+
+#define CAIRO_COLOR_IS_CLEAR(color) CAIRO_ALPHA_SHORT_IS_CLEAR ((color)->alpha_short)
+#define CAIRO_COLOR_IS_OPAQUE(color) CAIRO_ALPHA_SHORT_IS_OPAQUE ((color)->alpha_short)
+
+/* Reverse the bits in a byte with 7 operations (no 64-bit):
+ * Devised by Sean Anderson, July 13, 2001.
+ * Source: http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits
+ */
+#define CAIRO_BITSWAP8(c) ((((c) * 0x0802LU & 0x22110LU) | ((c) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16)
+
+/* Return the number of 1 bits in mask.
+ *
+ * GCC 3.4 supports a "population count" builtin, which on many targets is
+ * implemented with a single instruction. There is a fallback definition
+ * in libgcc in case a target does not have one, which should be just as
+ * good as the open-coded solution below, (which is "HACKMEM 169").
+ */
+static inline int cairo_const
+_cairo_popcount (uint32_t mask)
+{
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+    return __builtin_popcount (mask);
+#else
+    register int y;
+
+    y = (mask >> 1) &033333333333;
+    y = mask - y - ((y >>1) & 033333333333);
+    return (((y + (y >> 3)) & 030707070707) % 077);
+#endif
+}
+
+static cairo_always_inline cairo_bool_t
+_cairo_is_little_endian (void)
+{
+    static const int i = 1;
+    return *((char *) &i) == 0x01;
+}
+
+#ifdef WORDS_BIGENDIAN
+#define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) (c)
+#else
+#define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) CAIRO_BITSWAP8(c)
+#endif
+
+#ifdef WORDS_BIGENDIAN
+
+#define cpu_to_be16(v) (v)
+#define be16_to_cpu(v) (v)
+#define cpu_to_be32(v) (v)
+#define be32_to_cpu(v) (v)
+
+#else
+
+static inline uint16_t cairo_const
+cpu_to_be16(uint16_t v)
+{
+    return (v << 8) | (v >> 8);
+}
+
+static inline uint16_t cairo_const
+be16_to_cpu(uint16_t v)
+{
+    return cpu_to_be16 (v);
+}
+
+static inline uint32_t cairo_const
+cpu_to_be32(uint32_t v)
+{
+    return (v >> 24) | ((v >> 8) & 0xff00) | ((v << 8) & 0xff0000) | (v << 24);
+}
+
+static inline uint32_t cairo_const
+be32_to_cpu(uint32_t v)
+{
+    return cpu_to_be32 (v);
+}
+
+#endif
+
+/* Unaligned big endian access
+ */
+
+static inline uint16_t get_unaligned_be16 (const unsigned char *p)
+{
+    return p[0] << 8 | p[1];
+}
+
+static inline uint32_t get_unaligned_be32 (const unsigned char *p)
+{
+    return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+}
+
+static inline void put_unaligned_be16 (uint16_t v, unsigned char *p)
+{
+    p[0] = (v >> 8) & 0xff;
+    p[1] = v & 0xff;
+}
+
+static inline void put_unaligned_be32 (uint32_t v, unsigned char *p)
+{
+    p[0] = (v >> 24) & 0xff;
+    p[1] = (v >> 16) & 0xff;
+    p[2] = (v >> 8)  & 0xff;
+    p[3] = v & 0xff;
+}
+
+/* The glibc versions of ispace() and isdigit() are slow in UTF-8 locales.
+ */
+
+static inline int cairo_const
+_cairo_isspace (int c)
+{
+    return (c == 0x20 || (c >= 0x09 && c <= 0x0d));
+}
+
+static inline int cairo_const
+_cairo_isdigit (int c)
+{
+    return (c >= '0' && c <= '9');
+}
+
+static inline int cairo_const
+_cairo_isalpha (int c)
+{
+    return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
+}
+
+#include "cairo-types-private.h"
+#include "cairo-cache-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-spans-private.h"
+#include "cairo-surface-private.h"
+
+cairo_private void
+_cairo_box_from_doubles (cairo_box_t *box,
+			 double *x1, double *y1,
+			 double *x2, double *y2);
+
+cairo_private void
+_cairo_box_to_doubles (const cairo_box_t *box,
+		       double *x1, double *y1,
+		       double *x2, double *y2);
+
+cairo_private void
+_cairo_box_from_rectangle (cairo_box_t                 *box,
+			   const cairo_rectangle_int_t *rectangle);
+
+cairo_private void
+_cairo_box_round_to_rectangle (const cairo_box_t     *box,
+			       cairo_rectangle_int_t *rectangle);
+
+cairo_private void
+_cairo_box_add_curve_to (cairo_box_t         *extents,
+			 const cairo_point_t *a,
+			 const cairo_point_t *b,
+			 const cairo_point_t *c,
+			 const cairo_point_t *d);
+
+cairo_private void
+_cairo_boxes_get_extents (const cairo_box_t *boxes,
+			  int num_boxes,
+			  cairo_box_t *extents);
+
+cairo_private extern const cairo_rectangle_int_t _cairo_empty_rectangle;
+cairo_private extern const cairo_rectangle_int_t _cairo_unbounded_rectangle;
+
+static inline void
+_cairo_unbounded_rectangle_init (cairo_rectangle_int_t *rect)
+{
+    *rect = _cairo_unbounded_rectangle;
+}
+
+cairo_private_no_warn cairo_bool_t
+_cairo_rectangle_intersect (cairo_rectangle_int_t *dst,
+			    const cairo_rectangle_int_t *src);
+
+static inline cairo_bool_t
+_cairo_rectangle_intersects (const cairo_rectangle_int_t *dst,
+			     const cairo_rectangle_int_t *src)
+{
+    return !(src->x >= dst->x + (int) dst->width ||
+	     src->x + (int) src->width <= dst->x ||
+	     src->y >= dst->y + (int) dst->height ||
+	     src->y + (int) src->height <= dst->y);
+}
+
+static inline cairo_bool_t
+_cairo_rectangle_contains_rectangle (const cairo_rectangle_int_t *a,
+				     const cairo_rectangle_int_t *b)
+{
+    return (a->x <= b->x &&
+	    a->x + (int) a->width >= b->x + (int) b->width &&
+	    a->y <= b->y &&
+	    a->y + (int) a->height >= b->y + (int) b->height);
+}
+
+cairo_private void
+_cairo_rectangle_int_from_double (cairo_rectangle_int_t *recti,
+				  const cairo_rectangle_t *rectf);
+
+/* Extends the dst rectangle to also contain src.
+ * If one of the rectangles is empty, the result is undefined
+ */
+cairo_private void
+_cairo_rectangle_union (cairo_rectangle_int_t *dst,
+			const cairo_rectangle_int_t *src);
+
+cairo_private cairo_bool_t
+_cairo_box_intersects_line_segment (const cairo_box_t *box,
+	                            cairo_line_t *line) cairo_pure;
+
+cairo_private cairo_bool_t
+_cairo_spline_intersects (const cairo_point_t *a,
+			  const cairo_point_t *b,
+			  const cairo_point_t *c,
+			  const cairo_point_t *d,
+			  const cairo_box_t *box) cairo_pure;
+
+typedef struct {
+    const cairo_user_data_key_t *key;
+    void *user_data;
+    cairo_destroy_func_t destroy;
+} cairo_user_data_slot_t;
+
+cairo_private void
+_cairo_user_data_array_init (cairo_user_data_array_t *array);
+
+cairo_private void
+_cairo_user_data_array_fini (cairo_user_data_array_t *array);
+
+cairo_private void *
+_cairo_user_data_array_get_data (cairo_user_data_array_t     *array,
+				 const cairo_user_data_key_t *key);
+
+cairo_private cairo_status_t
+_cairo_user_data_array_set_data (cairo_user_data_array_t     *array,
+				 const cairo_user_data_key_t *key,
+				 void			     *user_data,
+				 cairo_destroy_func_t	      destroy);
+
+cairo_private cairo_status_t
+_cairo_user_data_array_copy (cairo_user_data_array_t		*dst,
+			     const cairo_user_data_array_t	*src);
+
+cairo_private void
+_cairo_user_data_array_foreach (cairo_user_data_array_t     *array,
+				void (*func) (const void *key,
+					      void *elt,
+					      void *closure),
+				void *closure);
+
+#define _CAIRO_HASH_INIT_VALUE 5381
+
+cairo_private unsigned long
+_cairo_hash_string (const char *c);
+
+cairo_private unsigned long
+_cairo_hash_bytes (unsigned long hash,
+		   const void *bytes,
+		   unsigned int length);
+
+#define _cairo_scaled_glyph_index(g) ((g)->hash_entry.hash)
+#define _cairo_scaled_glyph_set_index(g, i)  ((g)->hash_entry.hash = (i))
+
+#include "cairo-scaled-font-private.h"
+
+struct _cairo_font_face {
+    /* hash_entry must be first */
+    cairo_hash_entry_t hash_entry;
+    cairo_status_t status;
+    cairo_reference_count_t ref_count;
+    cairo_user_data_array_t user_data;
+    const cairo_font_face_backend_t *backend;
+};
+
+cairo_private void
+_cairo_default_context_reset_static_data (void);
+
+cairo_private void
+_cairo_toy_font_face_reset_static_data (void);
+
+cairo_private void
+_cairo_ft_font_reset_static_data (void);
+
+cairo_private void
+_cairo_win32_font_reset_static_data (void);
+
+#if CAIRO_HAS_COGL_SURFACE
+void
+_cairo_cogl_context_reset_static_data (void);
+#endif
+
+/* the font backend interface */
+
+struct _cairo_unscaled_font_backend {
+    cairo_bool_t (*destroy) (void	*unscaled_font);
+};
+
+/* #cairo_toy_font_face_t - simple family/slant/weight font faces used for
+ * the built-in font API
+ */
+
+typedef struct _cairo_toy_font_face {
+    cairo_font_face_t base;
+    const char *family;
+    cairo_bool_t owns_family;
+    cairo_font_slant_t slant;
+    cairo_font_weight_t weight;
+
+    cairo_font_face_t *impl_face; /* The non-toy font face this actually uses */
+} cairo_toy_font_face_t;
+
+typedef enum _cairo_scaled_glyph_info {
+    CAIRO_SCALED_GLYPH_INFO_METRICS	 = (1 << 0),
+    CAIRO_SCALED_GLYPH_INFO_SURFACE	 = (1 << 1),
+    CAIRO_SCALED_GLYPH_INFO_PATH	 = (1 << 2),
+    CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE = (1 << 3),
+    CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE = (1 << 4)
+} cairo_scaled_glyph_info_t;
+
+typedef struct _cairo_scaled_font_subset {
+    cairo_scaled_font_t *scaled_font;
+    unsigned int font_id;
+    unsigned int subset_id;
+
+    /* Index of glyphs array is subset_glyph_index.
+     * Value of glyphs array is scaled_font_glyph_index.
+     */
+    unsigned long *glyphs;
+    char          **utf8;
+    char          **glyph_names;
+    int           *to_latin_char;
+    unsigned long *latin_to_subset_glyph_index;
+    unsigned int num_glyphs;
+    cairo_bool_t is_composite;
+    cairo_bool_t is_scaled;
+    cairo_bool_t is_latin;
+} cairo_scaled_font_subset_t;
+
+struct _cairo_scaled_font_backend {
+    cairo_font_type_t type;
+
+    void
+    (*fini)		(void			*scaled_font);
+
+    cairo_warn cairo_int_status_t
+    (*scaled_glyph_init)	(void			     *scaled_font,
+				 cairo_scaled_glyph_t	     *scaled_glyph,
+				 cairo_scaled_glyph_info_t    info);
+
+    /* A backend only needs to implement this or ucs4_to_index(), not
+     * both. This allows the backend to do something more sophisticated
+     * then just converting characters one by one.
+     */
+    cairo_warn cairo_int_status_t
+    (*text_to_glyphs) (void                       *scaled_font,
+		       double		           x,
+		       double		           y,
+		       const char	          *utf8,
+		       int		           utf8_len,
+		       cairo_glyph_t	         **glyphs,
+		       int		          *num_glyphs,
+		       cairo_text_cluster_t      **clusters,
+		       int		          *num_clusters,
+		       cairo_text_cluster_flags_t *cluster_flags);
+
+    unsigned long
+    (*ucs4_to_index)		(void			     *scaled_font,
+				 uint32_t		      ucs4);
+
+    /* Read data from a sfnt font table.
+     * @scaled_font: font
+     * @tag: 4 byte table name specifying the table to read.
+     * @offset: offset into the table
+     * @buffer: buffer to write data into. Caller must ensure there is sufficient space.
+     *          If NULL, return the size of the table in @length.
+     * @length: If @buffer is NULL, the size of the table will be returned in @length.
+     *          If @buffer is not null, @length specifies the number of bytes to read.
+     *
+     * If less than @length bytes are available to read this function
+     * returns CAIRO_INT_STATUS_UNSUPPORTED. Note that requesting more
+     * bytes than are available in the table may continue reading data
+     * from the following table and return success. If this is
+     * undesirable the caller should first query the table size. If an
+     * error occurs the output value of @length is undefined.
+     *
+     * Returns CAIRO_INT_STATUS_UNSUPPORTED if not a sfnt style font or table not found.
+     */
+    cairo_warn cairo_int_status_t
+    (*load_truetype_table)(void		        *scaled_font,
+                           unsigned long         tag,
+                           long                  offset,
+                           unsigned char        *buffer,
+                           unsigned long        *length);
+
+    /* ucs4 is set to -1 if the unicode character could not be found
+     * for the glyph */
+    cairo_warn cairo_int_status_t
+    (*index_to_ucs4)(void                       *scaled_font,
+		     unsigned long               index,
+                     uint32_t                   *ucs4);
+
+    /* Determine if this scaled font differs from the outlines in the font tables.
+     * eg synthesized bold/italic or a non default variant of a variable font.
+     */
+    cairo_warn cairo_int_status_t
+    (*is_synthetic)(void                       *scaled_font,
+		    cairo_bool_t               *is_synthetic);
+
+    /* For type 1 fonts, return the glyph name for a given glyph index.
+     * A glyph index and list of glyph names in the Type 1 fonts is provided.
+     * The function returns the index of the glyph in the list of glyph names.
+     * @scaled_font: font
+     * @glyph_names: the names of each glyph in the Type 1 font in the
+     *   order they appear in the CharStrings array
+     * @num_glyph_names: the number of names in the glyph_names array
+     * @glyph_index: the given glyph index
+     * @glyph_array_index: (index into glyph_names) the glyph name corresponding
+     *  to the glyph_index
+     */
+
+    cairo_warn cairo_int_status_t
+    (*index_to_glyph_name)(void                 *scaled_font,
+			   char                **glyph_names,
+			   int                   num_glyph_names,
+			   unsigned long         glyph_index,
+			   unsigned long        *glyph_array_index);
+
+    /* Read data from a PostScript font.
+     * @scaled_font: font
+     * @offset: offset into the table
+     * @buffer: buffer to write data into. Caller must ensure there is sufficient space.
+     *          If NULL, return the size of the table in @length.
+     * @length: If @buffer is NULL, the size of the table will be returned in @length.
+     *          If @buffer is not null, @length specifies the number of bytes to read.
+     *
+     * If less than @length bytes are available to read this function
+     * returns CAIRO_INT_STATUS_UNSUPPORTED. If an error occurs the
+     * output value of @length is undefined.
+     *
+     * Returns CAIRO_INT_STATUS_UNSUPPORTED if not a Type 1 font.
+     */
+    cairo_warn cairo_int_status_t
+    (*load_type1_data)    (void		        *scaled_font,
+                           long                  offset,
+                           unsigned char        *buffer,
+                           unsigned long        *length);
+
+    cairo_bool_t
+    (*has_color_glyphs)   (void                 *scaled_font);
+};
+
+struct _cairo_font_face_backend {
+    cairo_font_type_t	type;
+
+    cairo_warn cairo_status_t
+    (*create_for_toy)  (cairo_toy_font_face_t	*toy_face,
+			cairo_font_face_t      **font_face);
+
+    /* The destroy() function is allowed to resurrect the font face
+     * by re-referencing. This is needed for the FreeType backend.
+     */
+    cairo_bool_t
+    (*destroy)     (void			*font_face);
+
+    cairo_warn cairo_status_t
+    (*scaled_font_create) (void				*font_face,
+			   const cairo_matrix_t		*font_matrix,
+			   const cairo_matrix_t		*ctm,
+			   const cairo_font_options_t	*options,
+			   cairo_scaled_font_t	       **scaled_font);
+
+    cairo_font_face_t *
+    (*get_implementation) (void				*font_face,
+			   const cairo_matrix_t		*font_matrix,
+			   const cairo_matrix_t		*ctm,
+			   const cairo_font_options_t	*options);
+};
+
+extern const cairo_private struct _cairo_font_face_backend _cairo_user_font_face_backend;
+
+/* concrete font backends */
+#if CAIRO_HAS_FT_FONT
+
+extern const cairo_private struct _cairo_font_face_backend _cairo_ft_font_face_backend;
+
+#endif
+
+#if CAIRO_HAS_WIN32_FONT
+
+extern const cairo_private struct _cairo_font_face_backend _cairo_win32_font_face_backend;
+
+#endif
+
+#if CAIRO_HAS_QUARTZ_FONT
+
+extern const cairo_private struct _cairo_font_face_backend _cairo_quartz_font_face_backend;
+
+#endif
+
+#define CAIRO_EXTEND_SURFACE_DEFAULT CAIRO_EXTEND_NONE
+#define CAIRO_EXTEND_GRADIENT_DEFAULT CAIRO_EXTEND_PAD
+#define CAIRO_FILTER_DEFAULT CAIRO_FILTER_GOOD
+
+extern const cairo_private cairo_solid_pattern_t _cairo_pattern_clear;
+extern const cairo_private cairo_solid_pattern_t _cairo_pattern_black;
+extern const cairo_private cairo_solid_pattern_t _cairo_pattern_white;
+
+struct _cairo_surface_attributes {
+    cairo_matrix_t matrix;
+    cairo_extend_t extend;
+    cairo_filter_t filter;
+    cairo_bool_t has_component_alpha;
+    int		   x_offset;
+    int		   y_offset;
+    void	   *extra;
+};
+
+#define CAIRO_FONT_SLANT_DEFAULT   CAIRO_FONT_SLANT_NORMAL
+#define CAIRO_FONT_WEIGHT_DEFAULT  CAIRO_FONT_WEIGHT_NORMAL
+
+#define CAIRO_WIN32_FONT_FAMILY_DEFAULT "Arial"
+#define CAIRO_QUARTZ_FONT_FAMILY_DEFAULT  "Helvetica"
+#define CAIRO_FT_FONT_FAMILY_DEFAULT     ""
+#define CAIRO_USER_FONT_FAMILY_DEFAULT     "@cairo:"
+
+#if   CAIRO_HAS_WIN32_FONT
+
+#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_WIN32_FONT_FAMILY_DEFAULT
+#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_win32_font_face_backend
+
+#elif CAIRO_HAS_QUARTZ_FONT
+
+#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_QUARTZ_FONT_FAMILY_DEFAULT
+#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_quartz_font_face_backend
+
+#elif CAIRO_HAS_FT_FONT
+
+#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_FT_FONT_FAMILY_DEFAULT
+#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_ft_font_face_backend
+
+#else
+
+#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_FT_FONT_FAMILY_DEFAULT
+#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_user_font_face_backend
+
+#endif
+
+#define CAIRO_GSTATE_OPERATOR_DEFAULT	CAIRO_OPERATOR_OVER
+#define CAIRO_GSTATE_TOLERANCE_DEFAULT	0.1
+#define CAIRO_GSTATE_FILL_RULE_DEFAULT	CAIRO_FILL_RULE_WINDING
+#define CAIRO_GSTATE_LINE_WIDTH_DEFAULT	2.0
+#define CAIRO_GSTATE_LINE_CAP_DEFAULT	CAIRO_LINE_CAP_BUTT
+#define CAIRO_GSTATE_LINE_JOIN_DEFAULT	CAIRO_LINE_JOIN_MITER
+#define CAIRO_GSTATE_MITER_LIMIT_DEFAULT	10.0
+#define CAIRO_GSTATE_DEFAULT_FONT_SIZE  10.0
+
+#define CAIRO_SURFACE_RESOLUTION_DEFAULT 72.0
+#define CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT 300.0
+
+typedef struct _cairo_stroke_face {
+    cairo_point_t ccw;
+    cairo_point_t point;
+    cairo_point_t cw;
+    cairo_slope_t dev_vector;
+    cairo_point_double_t dev_slope;
+    cairo_point_double_t usr_vector;
+    double length;
+} cairo_stroke_face_t;
+
+/* cairo.c */
+
+static inline double cairo_const
+_cairo_restrict_value (double value, double min, double max)
+{
+    if (value < min)
+	return min;
+    else if (value > max)
+	return max;
+    else
+	return value;
+}
+
+/* C99 round() rounds to the nearest integral value with halfway cases rounded
+ * away from 0. _cairo_round rounds halfway cases toward positive infinity.
+ * This matches the rounding behaviour of _cairo_lround. */
+static inline double cairo_const
+_cairo_round (double r)
+{
+    return floor (r + .5);
+}
+
+#if DISABLE_SOME_FLOATING_POINT
+cairo_private int
+_cairo_lround (double d) cairo_const;
+#else
+static inline int cairo_const
+_cairo_lround (double r)
+{
+    return _cairo_round (r);
+}
+#endif
+
+cairo_private uint16_t
+_cairo_half_from_float (float f) cairo_const;
+
+cairo_private cairo_bool_t
+_cairo_operator_bounded_by_mask (cairo_operator_t op) cairo_const;
+
+cairo_private cairo_bool_t
+_cairo_operator_bounded_by_source (cairo_operator_t op) cairo_const;
+
+enum {
+    CAIRO_OPERATOR_BOUND_BY_MASK = 1 << 1,
+    CAIRO_OPERATOR_BOUND_BY_SOURCE = 1 << 2,
+};
+
+cairo_private uint32_t
+_cairo_operator_bounded_by_either (cairo_operator_t op) cairo_const;
+/* cairo-color.c */
+cairo_private const cairo_color_t *
+_cairo_stock_color (cairo_stock_t stock) cairo_pure;
+
+#define CAIRO_COLOR_WHITE       _cairo_stock_color (CAIRO_STOCK_WHITE)
+#define CAIRO_COLOR_BLACK       _cairo_stock_color (CAIRO_STOCK_BLACK)
+#define CAIRO_COLOR_TRANSPARENT _cairo_stock_color (CAIRO_STOCK_TRANSPARENT)
+
+cairo_private uint16_t
+_cairo_color_double_to_short (double d) cairo_const;
+
+cairo_private void
+_cairo_color_init_rgba (cairo_color_t *color,
+			double red, double green, double blue,
+			double alpha);
+
+cairo_private void
+_cairo_color_multiply_alpha (cairo_color_t *color,
+			     double	    alpha);
+
+cairo_private void
+_cairo_color_get_rgba (cairo_color_t *color,
+		       double	     *red,
+		       double	     *green,
+		       double	     *blue,
+		       double	     *alpha);
+
+cairo_private void
+_cairo_color_get_rgba_premultiplied (cairo_color_t *color,
+				     double	   *red,
+				     double	   *green,
+				     double	   *blue,
+				     double	   *alpha);
+
+cairo_private cairo_bool_t
+_cairo_color_equal (const cairo_color_t *color_a,
+                    const cairo_color_t *color_b) cairo_pure;
+
+cairo_private cairo_bool_t
+_cairo_color_stop_equal (const cairo_color_stop_t *color_a,
+			 const cairo_color_stop_t *color_b) cairo_pure;
+
+cairo_private cairo_content_t
+_cairo_color_get_content (const cairo_color_t *color) cairo_pure;
+
+/* cairo-font-face.c */
+
+extern const cairo_private cairo_font_face_t _cairo_font_face_nil;
+extern const cairo_private cairo_font_face_t _cairo_font_face_nil_file_not_found;
+
+cairo_private void
+_cairo_font_face_init (cairo_font_face_t               *font_face,
+		       const cairo_font_face_backend_t *backend);
+
+cairo_private cairo_bool_t
+_cairo_font_face_destroy (void *abstract_face);
+
+cairo_private cairo_status_t
+_cairo_font_face_set_error (cairo_font_face_t *font_face,
+	                    cairo_status_t     status);
+
+cairo_private void
+_cairo_unscaled_font_init (cairo_unscaled_font_t               *font,
+			   const cairo_unscaled_font_backend_t *backend);
+
+cairo_private_no_warn cairo_unscaled_font_t *
+_cairo_unscaled_font_reference (cairo_unscaled_font_t *font);
+
+cairo_private void
+_cairo_unscaled_font_destroy (cairo_unscaled_font_t *font);
+
+/* cairo-font-face-twin.c */
+
+cairo_private cairo_font_face_t *
+_cairo_font_face_twin_create_fallback (void);
+
+cairo_private cairo_status_t
+_cairo_font_face_twin_create_for_toy (cairo_toy_font_face_t   *toy_face,
+				      cairo_font_face_t      **font_face);
+
+/* cairo-font-face-twin-data.c */
+
+extern const cairo_private int8_t _cairo_twin_outlines[];
+extern const cairo_private uint16_t _cairo_twin_charmap[128];
+
+/* cairo-font-options.c */
+
+cairo_private void
+_cairo_font_options_init_default (cairo_font_options_t *options);
+
+cairo_private void
+_cairo_font_options_init_copy (cairo_font_options_t		*options,
+			       const cairo_font_options_t	*other);
+
+cairo_private void
+_cairo_font_options_fini (cairo_font_options_t *options);
+
+cairo_private void
+_cairo_font_options_set_lcd_filter (cairo_font_options_t   *options,
+				   cairo_lcd_filter_t  lcd_filter);
+
+cairo_private cairo_lcd_filter_t
+_cairo_font_options_get_lcd_filter (const cairo_font_options_t *options);
+
+cairo_private void
+_cairo_font_options_set_round_glyph_positions (cairo_font_options_t   *options,
+					       cairo_round_glyph_positions_t  round);
+
+cairo_private cairo_round_glyph_positions_t
+_cairo_font_options_get_round_glyph_positions (const cairo_font_options_t *options);
+
+/* cairo-hull.c */
+cairo_private cairo_status_t
+_cairo_hull_compute (cairo_pen_vertex_t *vertices, int *num_vertices);
+
+/* cairo-lzw.c */
+cairo_private unsigned char *
+_cairo_lzw_compress (unsigned char *data, unsigned long *size_in_out);
+
+/* cairo-misc.c */
+cairo_private cairo_status_t
+_cairo_validate_text_clusters (const char		   *utf8,
+			       int			    utf8_len,
+			       const cairo_glyph_t	   *glyphs,
+			       int			    num_glyphs,
+			       const cairo_text_cluster_t  *clusters,
+			       int			    num_clusters,
+			       cairo_text_cluster_flags_t   cluster_flags);
+
+cairo_private unsigned long
+_cairo_string_hash (const char *str, int len);
+
+cairo_private cairo_status_t
+_cairo_intern_string (const char **str_inout, int len);
+
+cairo_private void
+_cairo_intern_string_reset_static_data (void);
+
+cairo_private const char *
+_cairo_get_locale_decimal_point (void);
+
+cairo_private double
+_cairo_strtod (const char *nptr, char **endptr);
+
+/* cairo-path-fixed.c */
+cairo_private cairo_path_fixed_t *
+_cairo_path_fixed_create (void);
+
+cairo_private void
+_cairo_path_fixed_init (cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
+			     const cairo_path_fixed_t *other);
+
+cairo_private void
+_cairo_path_fixed_fini (cairo_path_fixed_t *path);
+
+cairo_private void
+_cairo_path_fixed_destroy (cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_move_to (cairo_path_fixed_t  *path,
+			   cairo_fixed_t	x,
+			   cairo_fixed_t	y);
+
+cairo_private void
+_cairo_path_fixed_new_sub_path (cairo_path_fixed_t *path);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_rel_move_to (cairo_path_fixed_t *path,
+			       cairo_fixed_t	   dx,
+			       cairo_fixed_t	   dy);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_line_to (cairo_path_fixed_t *path,
+			   cairo_fixed_t	x,
+			   cairo_fixed_t	y);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_rel_line_to (cairo_path_fixed_t *path,
+			       cairo_fixed_t	   dx,
+			       cairo_fixed_t	   dy);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_curve_to (cairo_path_fixed_t	*path,
+			    cairo_fixed_t x0, cairo_fixed_t y0,
+			    cairo_fixed_t x1, cairo_fixed_t y1,
+			    cairo_fixed_t x2, cairo_fixed_t y2);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_rel_curve_to (cairo_path_fixed_t *path,
+				cairo_fixed_t dx0, cairo_fixed_t dy0,
+				cairo_fixed_t dx1, cairo_fixed_t dy1,
+				cairo_fixed_t dx2, cairo_fixed_t dy2);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_close_path (cairo_path_fixed_t *path);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_get_current_point (cairo_path_fixed_t *path,
+				     cairo_fixed_t	*x,
+				     cairo_fixed_t	*y);
+
+typedef cairo_status_t
+(cairo_path_fixed_move_to_func_t) (void		 *closure,
+				   const cairo_point_t *point);
+
+typedef cairo_status_t
+(cairo_path_fixed_line_to_func_t) (void		 *closure,
+				   const cairo_point_t *point);
+
+typedef cairo_status_t
+(cairo_path_fixed_curve_to_func_t) (void	  *closure,
+				    const cairo_point_t *p0,
+				    const cairo_point_t *p1,
+				    const cairo_point_t *p2);
+
+typedef cairo_status_t
+(cairo_path_fixed_close_path_func_t) (void *closure);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_interpret (const cairo_path_fixed_t	  *path,
+		       cairo_path_fixed_move_to_func_t	  *move_to,
+		       cairo_path_fixed_line_to_func_t	  *line_to,
+		       cairo_path_fixed_curve_to_func_t	  *curve_to,
+		       cairo_path_fixed_close_path_func_t *close_path,
+		       void				  *closure);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_interpret_flat (const cairo_path_fixed_t *path,
+		       cairo_path_fixed_move_to_func_t	  *move_to,
+		       cairo_path_fixed_line_to_func_t	  *line_to,
+		       cairo_path_fixed_close_path_func_t *close_path,
+		       void				  *closure,
+		       double				  tolerance);
+
+
+cairo_private cairo_bool_t
+_cairo_path_bounder_extents (const cairo_path_fixed_t *path,
+			     cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_extents (const cairo_path_fixed_t *path,
+			   cairo_box_t *box);
+
+cairo_private void
+_cairo_path_fixed_approximate_clip_extents (const cairo_path_fixed_t	*path,
+					    cairo_rectangle_int_t *extents);
+
+cairo_private void
+_cairo_path_fixed_approximate_fill_extents (const cairo_path_fixed_t *path,
+					    cairo_rectangle_int_t *extents);
+
+cairo_private void
+_cairo_path_fixed_fill_extents (const cairo_path_fixed_t	*path,
+				cairo_fill_rule_t	 fill_rule,
+				double			 tolerance,
+				cairo_rectangle_int_t	*extents);
+
+cairo_private void
+_cairo_path_fixed_approximate_stroke_extents (const cairo_path_fixed_t *path,
+					      const cairo_stroke_style_t *style,
+					      const cairo_matrix_t *ctm,
+					      cairo_bool_t vector,
+					      cairo_rectangle_int_t *extents);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_stroke_extents (const cairo_path_fixed_t *path,
+				  const cairo_stroke_style_t *style,
+				  const cairo_matrix_t *ctm,
+				  const cairo_matrix_t *ctm_inverse,
+				  double tolerance,
+				  cairo_rectangle_int_t *extents);
+
+cairo_private void
+_cairo_path_fixed_transform (cairo_path_fixed_t	*path,
+			     const cairo_matrix_t	*matrix);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_is_box (const cairo_path_fixed_t *path,
+                          cairo_box_t *box);
+
+cairo_private cairo_bool_t
+_cairo_path_fixed_is_rectangle (const cairo_path_fixed_t *path,
+				cairo_box_t        *box);
+
+/* cairo-path-in-fill.c */
+cairo_private cairo_bool_t
+_cairo_path_fixed_in_fill (const cairo_path_fixed_t	*path,
+			   cairo_fill_rule_t	 fill_rule,
+			   double		 tolerance,
+			   double		 x,
+			   double		 y);
+
+/* cairo-path-fill.c */
+cairo_private cairo_status_t
+_cairo_path_fixed_fill_to_polygon (const cairo_path_fixed_t *path,
+				   double              tolerance,
+				   cairo_polygon_t      *polygon);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_fill_rectilinear_to_polygon (const cairo_path_fixed_t *path,
+					       cairo_antialias_t antialias,
+					       cairo_polygon_t *polygon);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_fill_rectilinear_to_boxes (const cairo_path_fixed_t *path,
+					     cairo_fill_rule_t fill_rule,
+					     cairo_antialias_t antialias,
+					     cairo_boxes_t *boxes);
+
+cairo_private cairo_region_t *
+_cairo_path_fixed_fill_rectilinear_to_region (const cairo_path_fixed_t	*path,
+					      cairo_fill_rule_t	 fill_rule,
+					      const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_fill_to_traps (const cairo_path_fixed_t   *path,
+				 cairo_fill_rule_t	     fill_rule,
+				 double			     tolerance,
+				 cairo_traps_t		    *traps);
+
+/* cairo-path-stroke.c */
+cairo_private cairo_status_t
+_cairo_path_fixed_stroke_to_polygon (const cairo_path_fixed_t	*path,
+				     const cairo_stroke_style_t	*stroke_style,
+				     const cairo_matrix_t	*ctm,
+				     const cairo_matrix_t	*ctm_inverse,
+				     double		 tolerance,
+				     cairo_polygon_t	*polygon);
+
+cairo_private cairo_int_status_t
+_cairo_path_fixed_stroke_to_tristrip (const cairo_path_fixed_t	*path,
+				      const cairo_stroke_style_t*style,
+				      const cairo_matrix_t	*ctm,
+				      const cairo_matrix_t	*ctm_inverse,
+				      double			 tolerance,
+				      cairo_tristrip_t		 *strip);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_stroke_dashed_to_polygon (const cairo_path_fixed_t	*path,
+					    const cairo_stroke_style_t	*stroke_style,
+					    const cairo_matrix_t	*ctm,
+					    const cairo_matrix_t	*ctm_inverse,
+					    double		 tolerance,
+					    cairo_polygon_t	*polygon);
+
+cairo_private cairo_int_status_t
+_cairo_path_fixed_stroke_rectilinear_to_boxes (const cairo_path_fixed_t	*path,
+					       const cairo_stroke_style_t	*stroke_style,
+					       const cairo_matrix_t	*ctm,
+					       cairo_antialias_t	 antialias,
+					       cairo_boxes_t		*boxes);
+
+cairo_private cairo_int_status_t
+_cairo_path_fixed_stroke_to_traps (const cairo_path_fixed_t	*path,
+				   const cairo_stroke_style_t	*stroke_style,
+				   const cairo_matrix_t	*ctm,
+				   const cairo_matrix_t	*ctm_inverse,
+				   double		 tolerance,
+				   cairo_traps_t	*traps);
+
+cairo_private cairo_int_status_t
+_cairo_path_fixed_stroke_polygon_to_traps (const cairo_path_fixed_t	*path,
+					   const cairo_stroke_style_t	*stroke_style,
+					   const cairo_matrix_t	*ctm,
+					   const cairo_matrix_t	*ctm_inverse,
+					   double		 tolerance,
+					   cairo_traps_t	*traps);
+
+cairo_private cairo_status_t
+_cairo_path_fixed_stroke_to_shaper (cairo_path_fixed_t	*path,
+				   const cairo_stroke_style_t	*stroke_style,
+				   const cairo_matrix_t	*ctm,
+				   const cairo_matrix_t	*ctm_inverse,
+				   double		 tolerance,
+				   cairo_status_t (*add_triangle) (void *closure,
+								   const cairo_point_t triangle[3]),
+				   cairo_status_t (*add_triangle_fan) (void *closure,
+								       const cairo_point_t *midpt,
+								       const cairo_point_t *points,
+								       int npoints),
+				   cairo_status_t (*add_quad) (void *closure,
+							       const cairo_point_t quad[4]),
+				   void *closure);
+
+/* cairo-scaled-font.c */
+
+cairo_private void
+_cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font);
+
+cairo_private void
+_cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font);
+
+cairo_private void
+_cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font,
+			      cairo_status_t status);
+
+cairo_private cairo_scaled_font_t *
+_cairo_scaled_font_create_in_error (cairo_status_t status);
+
+cairo_private void
+_cairo_scaled_font_reset_static_data (void);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font);
+
+cairo_private void
+_cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_init (cairo_scaled_font_t               *scaled_font,
+			 cairo_font_face_t		   *font_face,
+			 const cairo_matrix_t              *font_matrix,
+			 const cairo_matrix_t              *ctm,
+			 const cairo_font_options_t	   *options,
+			 const cairo_scaled_font_backend_t *backend);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_set_metrics (cairo_scaled_font_t	    *scaled_font,
+				cairo_font_extents_t	    *fs_metrics);
+
+/* This should only be called on an error path by a scaled_font constructor */
+cairo_private void
+_cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_font_extents (cairo_scaled_font_t  *scaled_font,
+				 cairo_font_extents_t *extents);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t	 *scaled_font,
+					 const cairo_glyph_t	 *glyphs,
+					 int                      num_glyphs,
+					 cairo_rectangle_int_t   *extents,
+					 cairo_bool_t		 *overlap);
+
+cairo_private cairo_bool_t
+_cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t	 *scaled_font,
+					      const cairo_glyph_t	 *glyphs,
+					      int                      num_glyphs,
+					      cairo_rectangle_int_t   *extents);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font,
+				cairo_operator_t     op,
+				const cairo_pattern_t *source,
+				cairo_surface_t	    *surface,
+				int		     source_x,
+				int		     source_y,
+				int		     dest_x,
+				int		     dest_y,
+				unsigned int	     width,
+				unsigned int	     height,
+				cairo_glyph_t	    *glyphs,
+				int		     num_glyphs,
+				cairo_region_t	    *clip_region);
+
+cairo_private cairo_status_t
+_cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font,
+			       const cairo_glyph_t *glyphs,
+			       int                  num_glyphs,
+			       cairo_path_fixed_t  *path);
+
+cairo_private void
+_cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph,
+				 cairo_scaled_font_t *scaled_font,
+				 cairo_text_extents_t *fs_metrics);
+
+cairo_private void
+_cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph,
+				 cairo_scaled_font_t *scaled_font,
+				 cairo_image_surface_t *surface);
+
+cairo_private void
+_cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph,
+			      cairo_scaled_font_t *scaled_font,
+			      cairo_path_fixed_t *path);
+
+cairo_private void
+_cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph,
+                                           cairo_scaled_font_t *scaled_font,
+                                           cairo_surface_t *recording_surface);
+
+cairo_private void
+_cairo_scaled_glyph_set_color_surface (cairo_scaled_glyph_t *scaled_glyph,
+		                       cairo_scaled_font_t *scaled_font,
+		                       cairo_image_surface_t *surface);
+
+cairo_private cairo_int_status_t
+_cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font,
+			    unsigned long index,
+			    cairo_scaled_glyph_info_t info,
+			    cairo_scaled_glyph_t **scaled_glyph_ret);
+
+cairo_private double
+_cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font);
+
+cairo_private void
+_cairo_scaled_font_map_destroy (void);
+
+/* cairo-stroke-style.c */
+
+cairo_private void
+_cairo_stroke_style_init (cairo_stroke_style_t *style);
+
+cairo_private cairo_status_t
+_cairo_stroke_style_init_copy (cairo_stroke_style_t *style,
+			       const cairo_stroke_style_t *other);
+
+cairo_private void
+_cairo_stroke_style_fini (cairo_stroke_style_t *style);
+
+cairo_private void
+_cairo_stroke_style_max_distance_from_path (const cairo_stroke_style_t *style,
+					    const cairo_path_fixed_t *path,
+                                            const cairo_matrix_t *ctm,
+                                            double *dx, double *dy);
+cairo_private void
+_cairo_stroke_style_max_line_distance_from_path (const cairo_stroke_style_t *style,
+						 const cairo_path_fixed_t *path,
+						 const cairo_matrix_t *ctm,
+						 double *dx, double *dy);
+
+cairo_private void
+_cairo_stroke_style_max_join_distance_from_path (const cairo_stroke_style_t *style,
+						 const cairo_path_fixed_t *path,
+						 const cairo_matrix_t *ctm,
+						 double *dx, double *dy);
+
+cairo_private double
+_cairo_stroke_style_dash_period (const cairo_stroke_style_t *style);
+
+cairo_private double
+_cairo_stroke_style_dash_stroked (const cairo_stroke_style_t *style);
+
+cairo_private cairo_bool_t
+_cairo_stroke_style_dash_can_approximate (const cairo_stroke_style_t *style,
+					  const cairo_matrix_t *ctm,
+					  double tolerance);
+
+cairo_private void
+_cairo_stroke_style_dash_approximate (const cairo_stroke_style_t *style,
+				      const cairo_matrix_t *ctm,
+				      double tolerance,
+				      double *dash_offset,
+				      double *dashes,
+				      unsigned int *num_dashes);
+
+
+/* cairo-surface.c */
+
+cairo_private cairo_bool_t
+_cairo_surface_has_mime_image (cairo_surface_t *surface);
+
+cairo_private cairo_status_t
+_cairo_surface_copy_mime_data (cairo_surface_t *dst,
+			       cairo_surface_t *src);
+
+cairo_private_no_warn cairo_int_status_t
+_cairo_surface_set_error (cairo_surface_t	*surface,
+			  cairo_int_status_t	 status);
+
+cairo_private void
+_cairo_surface_set_resolution (cairo_surface_t *surface,
+                               double x_res,
+                               double y_res);
+
+cairo_private cairo_surface_t *
+_cairo_surface_create_for_rectangle_int (cairo_surface_t *target,
+					 const cairo_rectangle_int_t *extents);
+
+cairo_private cairo_surface_t *
+_cairo_surface_create_scratch (cairo_surface_t	    *other,
+			       cairo_content_t	     content,
+			       int		     width,
+			       int		     height,
+			       const cairo_color_t  *color);
+
+cairo_private void
+_cairo_surface_init (cairo_surface_t			*surface,
+		     const cairo_surface_backend_t	*backend,
+		     cairo_device_t			*device,
+		     cairo_content_t			 content,
+		     cairo_bool_t                        is_vector);
+
+cairo_private void
+_cairo_surface_set_font_options (cairo_surface_t       *surface,
+				 cairo_font_options_t  *options);
+
+cairo_private cairo_status_t
+_cairo_surface_paint (cairo_surface_t	*surface,
+		      cairo_operator_t	 op,
+		      const cairo_pattern_t *source,
+		      const cairo_clip_t	    *clip);
+
+cairo_private cairo_image_surface_t *
+_cairo_surface_map_to_image (cairo_surface_t  *surface,
+			     const cairo_rectangle_int_t *extents);
+
+cairo_private_no_warn cairo_int_status_t
+_cairo_surface_unmap_image (cairo_surface_t       *surface,
+			    cairo_image_surface_t *image);
+
+cairo_private cairo_status_t
+_cairo_surface_mask (cairo_surface_t	*surface,
+		     cairo_operator_t	 op,
+		     const cairo_pattern_t	*source,
+		     const cairo_pattern_t	*mask,
+		     const cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_fill_stroke (cairo_surface_t	    *surface,
+			    cairo_operator_t	     fill_op,
+			    const cairo_pattern_t   *fill_source,
+			    cairo_fill_rule_t	     fill_rule,
+			    double		     fill_tolerance,
+			    cairo_antialias_t	     fill_antialias,
+			    cairo_path_fixed_t	    *path,
+			    cairo_operator_t	     stroke_op,
+			    const cairo_pattern_t   *stroke_source,
+			    const cairo_stroke_style_t    *stroke_style,
+			    const cairo_matrix_t	    *stroke_ctm,
+			    const cairo_matrix_t	    *stroke_ctm_inverse,
+			    double		     stroke_tolerance,
+			    cairo_antialias_t	     stroke_antialias,
+			    const cairo_clip_t	    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_stroke (cairo_surface_t		*surface,
+		       cairo_operator_t		 op,
+		       const cairo_pattern_t	*source,
+		       const cairo_path_fixed_t	*path,
+		       const cairo_stroke_style_t	*style,
+		       const cairo_matrix_t		*ctm,
+		       const cairo_matrix_t		*ctm_inverse,
+		       double			 tolerance,
+		       cairo_antialias_t	 antialias,
+		       const cairo_clip_t		*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_fill (cairo_surface_t	*surface,
+		     cairo_operator_t	 op,
+		     const cairo_pattern_t *source,
+		     const cairo_path_fixed_t	*path,
+		     cairo_fill_rule_t	 fill_rule,
+		     double		 tolerance,
+		     cairo_antialias_t	 antialias,
+		     const cairo_clip_t	*clip);
+
+cairo_private cairo_status_t
+_cairo_surface_show_text_glyphs (cairo_surface_t	    *surface,
+				 cairo_operator_t	     op,
+				 const cairo_pattern_t	    *source,
+				 const char		    *utf8,
+				 int			     utf8_len,
+				 cairo_glyph_t		    *glyphs,
+				 int			     num_glyphs,
+				 const cairo_text_cluster_t *clusters,
+				 int			     num_clusters,
+				 cairo_text_cluster_flags_t  cluster_flags,
+				 cairo_scaled_font_t	    *scaled_font,
+				 const cairo_clip_t		    *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_tag (cairo_surface_t	        *surface,
+		    cairo_bool_t                 begin,
+		    const char                  *tag_name,
+		    const char                  *attributes,
+		    const cairo_pattern_t	*source,
+		    const cairo_stroke_style_t	*stroke_style,
+		    const cairo_matrix_t	*ctm,
+		    const cairo_matrix_t	*ctm_inverse,
+		    const cairo_clip_t	        *clip);
+
+cairo_private cairo_status_t
+_cairo_surface_acquire_source_image (cairo_surface_t         *surface,
+				     cairo_image_surface_t  **image_out,
+				     void                   **image_extra);
+
+cairo_private void
+_cairo_surface_release_source_image (cairo_surface_t        *surface,
+				     cairo_image_surface_t  *image,
+				     void                   *image_extra);
+
+cairo_private cairo_surface_t *
+_cairo_surface_snapshot (cairo_surface_t *surface);
+
+cairo_private void
+_cairo_surface_attach_snapshot (cairo_surface_t *surface,
+				cairo_surface_t *snapshot,
+				cairo_surface_func_t detach_func);
+
+cairo_private cairo_surface_t *
+_cairo_surface_has_snapshot (cairo_surface_t *surface,
+			     const cairo_surface_backend_t *backend);
+
+cairo_private void
+_cairo_surface_detach_snapshot (cairo_surface_t *snapshot);
+
+cairo_private cairo_status_t
+_cairo_surface_begin_modification (cairo_surface_t *surface);
+
+cairo_private_no_warn cairo_bool_t
+_cairo_surface_get_extents (cairo_surface_t         *surface,
+			    cairo_rectangle_int_t   *extents);
+
+cairo_private cairo_bool_t
+_cairo_surface_has_device_transform (cairo_surface_t *surface) cairo_pure;
+
+cairo_private void
+_cairo_surface_release_device_reference (cairo_surface_t *surface);
+
+/* cairo-image-surface.c */
+
+/* XXX: In cairo 1.2.0 we added a new %CAIRO_FORMAT_RGB16_565 but
+ * neglected to adjust this macro. The net effect is that it's
+ * impossible to externally create an image surface with this
+ * format. This is perhaps a good thing since we also neglected to fix
+ * up things like cairo_surface_write_to_png() for the new format
+ * (-Wswitch-enum will tell you where). Is it obvious that format was
+ * added in haste?
+ *
+ * The reason for the new format was to allow the xlib backend to be
+ * used on X servers with a 565 visual. So the new format did its job
+ * for that, even without being considered "valid" for the sake of
+ * things like cairo_image_surface_create().
+ *
+ * Since 1.2.0 we ran into the same situation with X servers with BGR
+ * visuals. This time we invented #cairo_internal_format_t instead,
+ * (see it for more discussion).
+ *
+ * The punchline is that %CAIRO_FORMAT_VALID must not conside any
+ * internal format to be valid. Also we need to decide if the
+ * RGB16_565 should be moved to instead be an internal format. If so,
+ * this macro need not change for it. (We probably will need to leave
+ * an RGB16_565 value in the header files for the sake of code that
+ * might have that value in it.)
+ *
+ * If we do decide to start fully supporting RGB16_565 as an external
+ * format, then %CAIRO_FORMAT_VALID needs to be adjusted to include
+ * it. But that should not happen before all necessary code is fixed
+ * to support it (at least cairo_surface_write_to_png() and a few spots
+ * in cairo-xlib-surface.c--again see -Wswitch-enum).
+ */
+#define CAIRO_FORMAT_VALID(format) ((format) >= CAIRO_FORMAT_ARGB32 &&		\
+                                    (format) <= CAIRO_FORMAT_RGB30)
+
+/* pixman-required stride alignment in bytes. */
+#define CAIRO_STRIDE_ALIGNMENT (sizeof (uint32_t))
+#define CAIRO_STRIDE_FOR_WIDTH_BPP(w,bpp) \
+   ((((bpp)*(w)+7)/8 + CAIRO_STRIDE_ALIGNMENT-1) & -CAIRO_STRIDE_ALIGNMENT)
+
+#define CAIRO_CONTENT_VALID(content) ((content) && 			         \
+				      (((content) & ~(CAIRO_CONTENT_COLOR |      \
+						      CAIRO_CONTENT_ALPHA |      \
+						      CAIRO_CONTENT_COLOR_ALPHA))\
+				       == 0))
+
+cairo_private int
+_cairo_format_bits_per_pixel (cairo_format_t format) cairo_const;
+
+cairo_private cairo_format_t
+_cairo_format_from_content (cairo_content_t content) cairo_const;
+
+cairo_private cairo_format_t
+_cairo_format_from_pixman_format (pixman_format_code_t pixman_format);
+
+cairo_private cairo_content_t
+_cairo_content_from_format (cairo_format_t format) cairo_const;
+
+cairo_private cairo_content_t
+_cairo_content_from_pixman_format (pixman_format_code_t pixman_format);
+
+cairo_private cairo_surface_t *
+_cairo_image_surface_create_for_pixman_image (pixman_image_t		*pixman_image,
+					      pixman_format_code_t	 pixman_format);
+
+cairo_private pixman_format_code_t
+_cairo_format_to_pixman_format_code (cairo_format_t format);
+
+cairo_private cairo_bool_t
+_pixman_format_from_masks (cairo_format_masks_t *masks,
+			   pixman_format_code_t *format_ret);
+
+cairo_private cairo_bool_t
+_pixman_format_to_masks (pixman_format_code_t	 pixman_format,
+			 cairo_format_masks_t	*masks);
+
+cairo_private void
+_cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
+				cairo_scaled_glyph_t *scaled_glyph);
+
+cairo_private void
+_cairo_image_reset_static_data (void);
+
+cairo_private void
+_cairo_image_compositor_reset_static_data (void);
+
+cairo_private cairo_surface_t *
+_cairo_image_surface_create_with_pixman_format (unsigned char		*data,
+						pixman_format_code_t	 pixman_format,
+						int			 width,
+						int			 height,
+						int			 stride);
+
+cairo_private cairo_surface_t *
+_cairo_image_surface_create_with_content (cairo_content_t	content,
+					  int			width,
+					  int			height);
+
+cairo_private void
+_cairo_image_surface_assume_ownership_of_data (cairo_image_surface_t *surface);
+
+cairo_private cairo_image_surface_t *
+_cairo_image_surface_coerce (cairo_image_surface_t	*surface);
+
+cairo_private cairo_image_surface_t *
+_cairo_image_surface_coerce_to_format (cairo_image_surface_t	*surface,
+			               cairo_format_t		 format);
+
+cairo_private cairo_image_transparency_t
+_cairo_image_analyze_transparency (cairo_image_surface_t      *image);
+
+cairo_private cairo_image_color_t
+_cairo_image_analyze_color (cairo_image_surface_t      *image);
+
+/* cairo-pen.c */
+cairo_private int
+_cairo_pen_vertices_needed (double	    tolerance,
+			    double	    radius,
+			    const cairo_matrix_t  *matrix);
+
+cairo_private cairo_status_t
+_cairo_pen_init (cairo_pen_t	*pen,
+		 double		 radius,
+		 double		 tolerance,
+		 const cairo_matrix_t	*ctm);
+
+cairo_private void
+_cairo_pen_init_empty (cairo_pen_t *pen);
+
+cairo_private cairo_status_t
+_cairo_pen_init_copy (cairo_pen_t *pen, const cairo_pen_t *other);
+
+cairo_private void
+_cairo_pen_fini (cairo_pen_t *pen);
+
+cairo_private cairo_status_t
+_cairo_pen_add_points (cairo_pen_t *pen, cairo_point_t *point, int num_points);
+
+cairo_private int
+_cairo_pen_find_active_cw_vertex_index (const cairo_pen_t *pen,
+					const cairo_slope_t *slope);
+
+cairo_private int
+_cairo_pen_find_active_ccw_vertex_index (const cairo_pen_t *pen,
+					 const cairo_slope_t *slope);
+
+cairo_private void
+_cairo_pen_find_active_cw_vertices (const cairo_pen_t *pen,
+				     const cairo_slope_t *in,
+				     const cairo_slope_t *out,
+				     int *start, int *stop);
+
+cairo_private void
+_cairo_pen_find_active_ccw_vertices (const cairo_pen_t *pen,
+				     const cairo_slope_t *in,
+				     const cairo_slope_t *out,
+				     int *start, int *stop);
+
+/* cairo-polygon.c */
+cairo_private void
+_cairo_polygon_init (cairo_polygon_t   *polygon,
+		     const cairo_box_t *boxes,
+		     int		num_boxes);
+
+cairo_private void
+_cairo_polygon_init_with_clip (cairo_polygon_t *polygon,
+			       const cairo_clip_t *clip);
+
+cairo_private cairo_status_t
+_cairo_polygon_init_boxes (cairo_polygon_t *polygon,
+			   const cairo_boxes_t *boxes);
+
+cairo_private cairo_status_t
+_cairo_polygon_init_box_array (cairo_polygon_t *polygon,
+			       cairo_box_t *boxes,
+			       int num_boxes);
+
+cairo_private void
+_cairo_polygon_limit (cairo_polygon_t *polygon,
+		     const cairo_box_t *limits,
+		     int num_limits);
+
+cairo_private void
+_cairo_polygon_limit_to_clip (cairo_polygon_t *polygon,
+			      const cairo_clip_t *clip);
+
+cairo_private void
+_cairo_polygon_fini (cairo_polygon_t *polygon);
+
+cairo_private_no_warn cairo_status_t
+_cairo_polygon_add_line (cairo_polygon_t *polygon,
+			 const cairo_line_t *line,
+			 int top, int bottom,
+			 int dir);
+
+cairo_private_no_warn cairo_status_t
+_cairo_polygon_add_external_edge (void *polygon,
+				  const cairo_point_t *p1,
+				  const cairo_point_t *p2);
+
+cairo_private_no_warn cairo_status_t
+_cairo_polygon_add_contour (cairo_polygon_t *polygon,
+			    const cairo_contour_t *contour);
+
+cairo_private void
+_cairo_polygon_translate (cairo_polygon_t *polygon, int dx, int dy);
+
+cairo_private cairo_status_t
+_cairo_polygon_reduce (cairo_polygon_t *polygon,
+		       cairo_fill_rule_t fill_rule);
+
+cairo_private cairo_status_t
+_cairo_polygon_intersect (cairo_polygon_t *a, int winding_a,
+			  cairo_polygon_t *b, int winding_b);
+
+cairo_private cairo_status_t
+_cairo_polygon_intersect_with_boxes (cairo_polygon_t *polygon,
+				     cairo_fill_rule_t *winding,
+				     cairo_box_t *boxes,
+				     int num_boxes);
+
+static inline cairo_bool_t
+_cairo_polygon_is_empty (const cairo_polygon_t *polygon)
+{
+    return
+	polygon->num_edges == 0 ||
+	polygon->extents.p2.x <= polygon->extents.p1.x;
+}
+
+#define _cairo_polygon_status(P) ((cairo_polygon_t *) (P))->status
+
+/* cairo-spline.c */
+cairo_private cairo_bool_t
+_cairo_spline_init (cairo_spline_t *spline,
+		    cairo_spline_add_point_func_t add_point_func,
+		    void *closure,
+		    const cairo_point_t *a, const cairo_point_t *b,
+		    const cairo_point_t *c, const cairo_point_t *d);
+
+cairo_private cairo_status_t
+_cairo_spline_decompose (cairo_spline_t *spline, double tolerance);
+
+cairo_private cairo_status_t
+_cairo_spline_bound (cairo_spline_add_point_func_t add_point_func,
+		     void *closure,
+		     const cairo_point_t *p0, const cairo_point_t *p1,
+		     const cairo_point_t *p2, const cairo_point_t *p3);
+
+/* cairo-matrix.c */
+cairo_private void
+_cairo_matrix_get_affine (const cairo_matrix_t *matrix,
+			  double *xx, double *yx,
+			  double *xy, double *yy,
+			  double *x0, double *y0);
+
+cairo_private void
+_cairo_matrix_transform_bounding_box (const cairo_matrix_t *matrix,
+				      double *x1, double *y1,
+				      double *x2, double *y2,
+				      cairo_bool_t *is_tight);
+
+cairo_private void
+_cairo_matrix_transform_bounding_box_fixed (const cairo_matrix_t *matrix,
+					    cairo_box_t          *bbox,
+					    cairo_bool_t         *is_tight);
+
+cairo_private cairo_bool_t
+_cairo_matrix_is_invertible (const cairo_matrix_t *matrix) cairo_pure;
+
+cairo_private cairo_bool_t
+_cairo_matrix_is_scale_0 (const cairo_matrix_t *matrix) cairo_pure;
+
+cairo_private double
+_cairo_matrix_compute_determinant (const cairo_matrix_t *matrix) cairo_pure;
+
+cairo_private cairo_status_t
+_cairo_matrix_compute_basis_scale_factors (const cairo_matrix_t *matrix,
+					   double *sx, double *sy, int x_major);
+
+static inline cairo_bool_t
+_cairo_matrix_is_identity (const cairo_matrix_t *matrix)
+{
+    return (matrix->xx == 1.0 && matrix->yx == 0.0 &&
+	    matrix->xy == 0.0 && matrix->yy == 1.0 &&
+	    matrix->x0 == 0.0 && matrix->y0 == 0.0);
+}
+
+static inline cairo_bool_t
+_cairo_matrix_is_translation (const cairo_matrix_t *matrix)
+{
+    return (matrix->xx == 1.0 && matrix->yx == 0.0 &&
+	    matrix->xy == 0.0 && matrix->yy == 1.0);
+}
+
+static inline cairo_bool_t
+_cairo_matrix_is_scale (const cairo_matrix_t *matrix)
+{
+    return matrix->yx == 0.0 && matrix->xy == 0.0;
+}
+
+cairo_private cairo_bool_t
+_cairo_matrix_is_integer_translation(const cairo_matrix_t *matrix,
+				     int *itx, int *ity);
+
+cairo_private cairo_bool_t
+_cairo_matrix_has_unity_scale (const cairo_matrix_t *matrix);
+
+cairo_private cairo_bool_t
+_cairo_matrix_is_pixel_exact (const cairo_matrix_t *matrix) cairo_pure;
+
+cairo_private double
+_cairo_matrix_transformed_circle_major_axis (const cairo_matrix_t *matrix,
+					     double radius) cairo_pure;
+
+cairo_private cairo_bool_t
+_cairo_matrix_is_pixman_translation (const cairo_matrix_t     *matrix,
+				     cairo_filter_t            filter,
+				     int                      *out_x_offset,
+				     int                      *out_y_offset);
+
+cairo_private cairo_status_t
+_cairo_matrix_to_pixman_matrix_offset (const cairo_matrix_t	*matrix,
+				       cairo_filter_t            filter,
+				       double                    xc,
+				       double                    yc,
+				       pixman_transform_t	*out_transform,
+				       int                      *out_x_offset,
+				       int                      *out_y_offset);
+
+cairo_private void
+_cairo_debug_print_matrix (FILE *file, const cairo_matrix_t *matrix);
+
+cairo_private void
+_cairo_debug_print_rect (FILE *file, const cairo_rectangle_int_t *rect);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectilinear_polygon (cairo_traps_t	 *traps,
+						       const cairo_polygon_t *polygon,
+						       cairo_fill_rule_t	  fill_rule);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_polygon (cairo_traps_t         *traps,
+					   const cairo_polygon_t *polygon,
+					   cairo_fill_rule_t      fill_rule);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_traps (cairo_traps_t *traps,
+					 cairo_fill_rule_t fill_rule);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectangular_traps (cairo_traps_t *traps,
+						     cairo_fill_rule_t fill_rule);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_boxes (const cairo_boxes_t *in,
+					 cairo_fill_rule_t fill_rule,
+					 cairo_boxes_t *out);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectilinear_traps (cairo_traps_t *traps,
+						     cairo_fill_rule_t fill_rule);
+
+cairo_private cairo_status_t
+_cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes (const cairo_polygon_t *polygon,
+								cairo_fill_rule_t fill_rule,
+								cairo_boxes_t *boxes);
+
+cairo_private void
+_cairo_trapezoid_array_translate_and_scale (cairo_trapezoid_t *offset_traps,
+					    cairo_trapezoid_t *src_traps,
+					    int num_traps,
+					    double tx, double ty,
+					    double sx, double sy);
+
+#if CAIRO_HAS_DRM_SURFACE
+
+cairo_private void
+_cairo_drm_device_reset_static_data (void);
+
+#endif
+
+cairo_private void
+_cairo_clip_reset_static_data (void);
+
+cairo_private void
+_cairo_pattern_reset_static_data (void);
+
+/* cairo-unicode.c */
+
+cairo_private int
+_cairo_utf8_get_char_validated (const char *p,
+				uint32_t   *unicode);
+
+cairo_private cairo_status_t
+_cairo_utf8_to_ucs4 (const char *str,
+		     int	 len,
+		     uint32_t  **result,
+		     int	*items_written);
+
+cairo_private int
+_cairo_ucs4_to_utf8 (uint32_t    unicode,
+		     char       *utf8);
+
+cairo_private int
+_cairo_ucs4_to_utf16 (uint32_t    unicode,
+		      uint16_t   *utf16);
+
+#if CAIRO_HAS_WIN32_FONT || CAIRO_HAS_QUARTZ_FONT || CAIRO_HAS_PDF_OPERATORS
+# define CAIRO_HAS_UTF8_TO_UTF16 1
+#endif
+#if CAIRO_HAS_UTF8_TO_UTF16
+cairo_private cairo_status_t
+_cairo_utf8_to_utf16 (const char *str,
+		      int	  len,
+		      uint16_t  **result,
+		      int	 *items_written);
+#endif
+
+cairo_private void
+_cairo_matrix_multiply (cairo_matrix_t *r,
+			const cairo_matrix_t *a,
+			const cairo_matrix_t *b);
+
+/* cairo-observer.c */
+
+cairo_private void
+_cairo_observers_notify (cairo_list_t *observers, void *arg);
+
+/* Open a file with a UTF-8 filename */
+cairo_private cairo_status_t
+_cairo_fopen (const char *filename, const char *mode, FILE **file_out);
+
+/* Avoid unnecessary PLT entries.  */
+slim_hidden_proto (cairo_clip_preserve);
+slim_hidden_proto (cairo_close_path);
+slim_hidden_proto (cairo_create);
+slim_hidden_proto (cairo_curve_to);
+slim_hidden_proto (cairo_destroy);
+slim_hidden_proto (cairo_fill_preserve);
+slim_hidden_proto (cairo_font_face_destroy);
+slim_hidden_proto (cairo_font_face_get_user_data);
+slim_hidden_proto_no_warn (cairo_font_face_reference);
+slim_hidden_proto (cairo_font_face_set_user_data);
+slim_hidden_proto (cairo_font_options_equal);
+slim_hidden_proto (cairo_font_options_hash);
+slim_hidden_proto (cairo_font_options_merge);
+slim_hidden_proto (cairo_font_options_set_antialias);
+slim_hidden_proto (cairo_font_options_set_hint_metrics);
+slim_hidden_proto (cairo_font_options_set_hint_style);
+slim_hidden_proto (cairo_font_options_set_subpixel_order);
+slim_hidden_proto (cairo_font_options_status);
+slim_hidden_proto (cairo_format_stride_for_width);
+slim_hidden_proto (cairo_get_current_point);
+slim_hidden_proto (cairo_get_line_width);
+slim_hidden_proto (cairo_get_matrix);
+slim_hidden_proto (cairo_get_scaled_font);
+slim_hidden_proto (cairo_get_target);
+slim_hidden_proto (cairo_get_tolerance);
+slim_hidden_proto (cairo_glyph_allocate);
+slim_hidden_proto (cairo_glyph_free);
+slim_hidden_proto (cairo_image_surface_create);
+slim_hidden_proto (cairo_image_surface_create_for_data);
+slim_hidden_proto (cairo_image_surface_get_data);
+slim_hidden_proto (cairo_image_surface_get_format);
+slim_hidden_proto (cairo_image_surface_get_height);
+slim_hidden_proto (cairo_image_surface_get_stride);
+slim_hidden_proto (cairo_image_surface_get_width);
+slim_hidden_proto (cairo_line_to);
+slim_hidden_proto (cairo_mask);
+slim_hidden_proto (cairo_matrix_init);
+slim_hidden_proto (cairo_matrix_init_identity);
+slim_hidden_proto (cairo_matrix_init_rotate);
+slim_hidden_proto (cairo_matrix_init_scale);
+slim_hidden_proto (cairo_matrix_init_translate);
+slim_hidden_proto (cairo_matrix_invert);
+slim_hidden_proto (cairo_matrix_multiply);
+slim_hidden_proto (cairo_matrix_scale);
+slim_hidden_proto (cairo_matrix_transform_distance);
+slim_hidden_proto (cairo_matrix_transform_point);
+slim_hidden_proto (cairo_matrix_translate);
+slim_hidden_proto (cairo_move_to);
+slim_hidden_proto (cairo_new_path);
+slim_hidden_proto (cairo_paint);
+slim_hidden_proto (cairo_pattern_add_color_stop_rgba);
+slim_hidden_proto (cairo_pattern_create_for_surface);
+slim_hidden_proto (cairo_pattern_create_rgb);
+slim_hidden_proto (cairo_pattern_create_rgba);
+slim_hidden_proto (cairo_pattern_destroy);
+slim_hidden_proto (cairo_pattern_get_extend);
+slim_hidden_proto (cairo_mesh_pattern_curve_to);
+slim_hidden_proto (cairo_mesh_pattern_get_control_point);
+slim_hidden_proto (cairo_mesh_pattern_get_corner_color_rgba);
+slim_hidden_proto (cairo_mesh_pattern_get_patch_count);
+slim_hidden_proto (cairo_mesh_pattern_get_path);
+slim_hidden_proto (cairo_mesh_pattern_line_to);
+slim_hidden_proto (cairo_mesh_pattern_move_to);
+slim_hidden_proto (cairo_mesh_pattern_set_corner_color_rgba);
+slim_hidden_proto_no_warn (cairo_pattern_reference);
+slim_hidden_proto (cairo_pattern_set_matrix);
+slim_hidden_proto (cairo_pop_group);
+slim_hidden_proto (cairo_push_group_with_content);
+slim_hidden_proto_no_warn (cairo_path_destroy);
+slim_hidden_proto (cairo_recording_surface_create);
+slim_hidden_proto (cairo_rel_line_to);
+slim_hidden_proto (cairo_restore);
+slim_hidden_proto (cairo_save);
+slim_hidden_proto (cairo_scale);
+slim_hidden_proto (cairo_scaled_font_create);
+slim_hidden_proto (cairo_scaled_font_destroy);
+slim_hidden_proto (cairo_scaled_font_extents);
+slim_hidden_proto (cairo_scaled_font_get_ctm);
+slim_hidden_proto (cairo_scaled_font_get_font_face);
+slim_hidden_proto (cairo_scaled_font_get_font_matrix);
+slim_hidden_proto (cairo_scaled_font_get_font_options);
+slim_hidden_proto (cairo_scaled_font_glyph_extents);
+slim_hidden_proto_no_warn (cairo_scaled_font_reference);
+slim_hidden_proto (cairo_scaled_font_status);
+slim_hidden_proto (cairo_scaled_font_get_user_data);
+slim_hidden_proto (cairo_scaled_font_set_user_data);
+slim_hidden_proto (cairo_scaled_font_text_to_glyphs);
+slim_hidden_proto (cairo_set_font_matrix);
+slim_hidden_proto (cairo_set_font_options);
+slim_hidden_proto (cairo_set_font_size);
+slim_hidden_proto (cairo_set_line_cap);
+slim_hidden_proto (cairo_set_line_join);
+slim_hidden_proto (cairo_set_line_width);
+slim_hidden_proto (cairo_set_matrix);
+slim_hidden_proto (cairo_set_operator);
+slim_hidden_proto (cairo_set_source);
+slim_hidden_proto (cairo_set_source_rgb);
+slim_hidden_proto (cairo_set_source_surface);
+slim_hidden_proto (cairo_set_tolerance);
+slim_hidden_proto (cairo_status);
+slim_hidden_proto (cairo_stroke);
+slim_hidden_proto (cairo_stroke_preserve);
+slim_hidden_proto (cairo_surface_copy_page);
+slim_hidden_proto (cairo_surface_create_similar_image);
+slim_hidden_proto (cairo_surface_destroy);
+slim_hidden_proto (cairo_surface_finish);
+slim_hidden_proto (cairo_surface_flush);
+slim_hidden_proto (cairo_surface_get_device_offset);
+slim_hidden_proto (cairo_surface_get_device_scale);
+slim_hidden_proto (cairo_surface_get_font_options);
+slim_hidden_proto (cairo_surface_get_mime_data);
+slim_hidden_proto (cairo_surface_has_show_text_glyphs);
+slim_hidden_proto (cairo_surface_mark_dirty);
+slim_hidden_proto (cairo_surface_mark_dirty_rectangle);
+slim_hidden_proto_no_warn (cairo_surface_reference);
+slim_hidden_proto (cairo_surface_set_device_offset);
+slim_hidden_proto (cairo_surface_set_device_scale);
+slim_hidden_proto (cairo_surface_set_fallback_resolution);
+slim_hidden_proto (cairo_surface_set_mime_data);
+slim_hidden_proto (cairo_surface_show_page);
+slim_hidden_proto (cairo_surface_status);
+slim_hidden_proto (cairo_surface_supports_mime_type);
+slim_hidden_proto (cairo_text_cluster_allocate);
+slim_hidden_proto (cairo_text_cluster_free);
+slim_hidden_proto (cairo_toy_font_face_create);
+slim_hidden_proto (cairo_toy_font_face_get_slant);
+slim_hidden_proto (cairo_toy_font_face_get_weight);
+slim_hidden_proto (cairo_translate);
+slim_hidden_proto (cairo_transform);
+slim_hidden_proto (cairo_user_font_face_create);
+slim_hidden_proto (cairo_user_font_face_set_init_func);
+slim_hidden_proto (cairo_user_font_face_set_render_glyph_func);
+slim_hidden_proto (cairo_user_font_face_set_unicode_to_glyph_func);
+slim_hidden_proto (cairo_device_to_user);
+slim_hidden_proto (cairo_user_to_device);
+slim_hidden_proto (cairo_user_to_device_distance);
+slim_hidden_proto (cairo_version_string);
+slim_hidden_proto (cairo_region_create);
+slim_hidden_proto (cairo_region_create_rectangle);
+slim_hidden_proto (cairo_region_create_rectangles);
+slim_hidden_proto (cairo_region_copy);
+slim_hidden_proto (cairo_region_reference);
+slim_hidden_proto (cairo_region_destroy);
+slim_hidden_proto (cairo_region_equal);
+slim_hidden_proto (cairo_region_status);
+slim_hidden_proto (cairo_region_get_extents);
+slim_hidden_proto (cairo_region_num_rectangles);
+slim_hidden_proto (cairo_region_get_rectangle);
+slim_hidden_proto (cairo_region_is_empty);
+slim_hidden_proto (cairo_region_contains_rectangle);
+slim_hidden_proto (cairo_region_contains_point);
+slim_hidden_proto (cairo_region_translate);
+slim_hidden_proto (cairo_region_subtract);
+slim_hidden_proto (cairo_region_subtract_rectangle);
+slim_hidden_proto (cairo_region_intersect);
+slim_hidden_proto (cairo_region_intersect_rectangle);
+slim_hidden_proto (cairo_region_union);
+slim_hidden_proto (cairo_region_union_rectangle);
+slim_hidden_proto (cairo_region_xor);
+slim_hidden_proto (cairo_region_xor_rectangle);
+
+#if CAIRO_HAS_PNG_FUNCTIONS
+
+slim_hidden_proto (cairo_surface_write_to_png_stream);
+
+#endif
+
+CAIRO_END_DECLS
+
+#include "cairo-mutex-private.h"
+#include "cairo-fixed-private.h"
+#include "cairo-wideint-private.h"
+#include "cairo-malloc-private.h"
+#include "cairo-hash-private.h"
+
+#if HAVE_VALGRIND
+#include <memcheck.h>
+
+#define VG(x) x
+
+cairo_private void
+_cairo_debug_check_image_surface_is_defined (const cairo_surface_t *surface);
+
+#else
+
+#define VG(x)
+#define _cairo_debug_check_image_surface_is_defined(X)
+
+#endif
+
+cairo_private void
+_cairo_debug_print_path (FILE *stream, const cairo_path_fixed_t *path);
+
+cairo_private void
+_cairo_debug_print_polygon (FILE *stream, cairo_polygon_t *polygon);
+
+cairo_private void
+_cairo_debug_print_traps (FILE *file, const cairo_traps_t *traps);
+
+cairo_private void
+_cairo_debug_print_clip (FILE *stream, const cairo_clip_t *clip);
+
+#if 0
+#define TRACE(x) fprintf (stderr, "%s: ", __FILE__), fprintf x
+#define TRACE_(x) x
+#else
+#define TRACE(x)
+#define TRACE_(x)
+#endif
+
+#endif
diff --git a/libs/cairo-1.16.0/src/check-def.sh b/libs/cairo-1.16.0/src/check-def.sh
new file mode 100755
index 0000000..beefb46
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-def.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+LC_ALL=C
+export LC_ALL
+
+if which nm 2>/dev/null >/dev/null; then
+	:
+else
+	echo "'nm' not found; skipping test"
+	exit 0
+fi
+
+test -z "$srcdir" && srcdir=.
+test -z "$MAKE" && MAKE=make
+stat=0
+
+$MAKE check-has-hidden-symbols.i > /dev/null || exit 1
+if tail -1 check-has-hidden-symbols.i | grep CAIRO_HAS_HIDDEN_SYMBOLS >/dev/null; then
+	echo "Compiler doesn't support symbol visibility; skipping test"
+	exit 0
+fi
+
+if [ "`uname -s`" = "Linux" ]; then
+	get_cairo_syms='( objdump -t "$so" | grep "^[^ ]* [^l.*]*[.]"; objdump -t "$so" | grep "[.]hidden.*\\<cairo"; ) | sed "s/.* //"'
+else
+	get_cairo_syms='nm "$so" | grep " [BCDGINRSTVW] " | cut -d" " -f3'
+fi
+
+defs="cairo.def"
+$MAKE $defs > /dev/null
+for def in $defs; do
+	lib=`echo "$def" | sed 's/[.]def$//'`
+	lib=`echo "$lib" | sed 's@.*/@@'`
+	so=.libs/lib${lib}.so
+
+	test -f "$so" || continue
+
+	echo Checking that $so has the same symbol list as $def
+
+	{
+		echo EXPORTS
+		eval $get_cairo_syms | c++filt --no-params | grep -v '^_cairo_test_\|^_fini\|^_init\|^_save[fg]pr\|^_rest[fg]pr\|^_Z\|^__gnu\|^__bss\|^_edata\|^_end' | sort -u
+		# cheat: copy the last line from the def file!
+		tail -n1 "$def"
+	} | diff "$def" - >&2 || stat=1
+done
+
+exit $stat
diff --git a/libs/cairo-1.16.0/src/check-doc-syntax.awk b/libs/cairo-1.16.0/src/check-doc-syntax.awk
new file mode 100644
index 0000000..1fa8b8d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-doc-syntax.awk
@@ -0,0 +1,106 @@
+BEGIN {
+    name_found = 1
+    SECTION_DOC = 0
+    PUBLIC_DOC = 1
+    PRIVATE_DOC = 2
+}
+
+function log_msg(severity, msg)
+{
+    printf "%s (%d): %s: %s %s\n", FILENAME, FNR, severity, doc_name, msg
+}
+
+function log_error(msg)
+{
+    log_msg("ERROR", msg)
+}
+
+function log_warning(msg)
+{
+    log_msg("WARNING", msg)
+}
+
+/^\/\*\*$/ {
+    in_doc = 1
+    doc_line = 0
+}
+
+/^(\/\*\*$| \*[ \t]| \*$| \*\*\/$)/ {
+    valid_doc = 1
+}
+
+in_doc {
+    if (!valid_doc)
+	log_error("bad line: '" $0 "'")
+    valid_doc = 0
+
+    doc_line++
+    if (doc_line == 2) {
+	# new doc name. Did we find the previous one?
+	# (macros are not expected to be found in the same place as
+	# their documentation)
+	if (!name_found && doc_name !~ /CAIRO_/)
+	    log_warning("not found")
+	doc_name = $2
+	if (doc_name ~ /^SECTION:.*$/) {
+	    doc_type = SECTION_DOC
+	    name_found = 1
+	} else if (tolower(doc_name) ~ /^cairo_[a-z0-9_]*:$/) {
+	    doc_type = PUBLIC_DOC
+	    name_found = 0
+	    real_name = substr(doc_name, 1, length(doc_name) - 1)
+	} else if (tolower(doc_name) ~ /^_[a-z0-9_]*:$/) {
+	    doc_type = PRIVATE_DOC
+	    name_found = 0
+	    real_name = substr(doc_name, 1, length(doc_name) - 1)
+	} else {
+	    log_error("invalid doc id (should be 'cairo_...:')")
+	    name_found = 1
+	}
+    }
+}
+
+!in_doc {
+    regex = "(^|[ \\t\\*])" real_name "([ ;()]|$)"
+    if ($0 ~ regex)
+	name_found = 1
+}
+
+/^ \* Since: ([0-9]*.[0-9]*|TBD)$/ {
+    if (doc_has_since != 0) {
+	log_error("Duplicate 'Since' field")
+    }
+    doc_has_since = doc_line
+}
+
+/^ \*\*\// {
+    if (doc_type == PUBLIC_DOC) {
+	if (!doc_has_since) {
+	    # private types can start with cairo_
+	    if (doc_name ~ /^cairo_.*_t:$/)
+		log_warning("missing 'Since' field (is it a private type?)")
+	    else
+		log_error("missing 'Since' field")
+	} else if (doc_has_since != doc_line - 1)
+	    log_warning("misplaced 'Since' field (should be right before the end of the comment)")
+    } else {
+	if (doc_has_since)
+	    log_warning("'Since' field in non-public element")
+    }
+
+    in_doc = 0
+    doc_has_since = 0
+    doc_type = 0
+}
+
+/\*\// {
+    if (in_doc) {
+	in_doc = 0
+ 	log_error("documentation comment not closed with **/")
+    }
+}
+
+END {
+    if (!name_found)
+	log_warning("not found")
+}
diff --git a/libs/cairo-1.16.0/src/check-doc-syntax.sh b/libs/cairo-1.16.0/src/check-doc-syntax.sh
new file mode 100755
index 0000000..762a484
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-doc-syntax.sh
@@ -0,0 +1,82 @@
+#!/bin/sh
+
+LC_ALL=C
+export LC_ALL
+
+if grep --version 2>/dev/null | grep GNU >/dev/null; then
+	:
+else
+	echo "GNU grep not found; skipping test"
+	exit 0
+fi
+
+test -z "$srcdir" && srcdir=.
+stat=0
+
+echo Checking documentation for incorrect syntax
+
+cd "$srcdir"
+
+if test "x$SGML_DOCS" = x; then
+    FILES=$all_cairo_files
+    if test "x$FILES" = x; then
+        FILES=`find . -name 'cairo*.h' -or -name 'cairo*.c' -or -name 'cairo*.cpp'`
+    fi
+fi
+
+enum_regexp="\([^%@']\|^\)\<\(FALSE\|TRUE\|NULL\|CAIRO_[0-9A-Z_]*\)\($\|[^(A-Za-z0-9_]\)"
+if test "x$SGML_DOCS" = x; then
+	enum_regexp='^[^:]*:[/ ][*]\(\|[ \t].*\)'$enum_regexp\($\|[^:]\)
+fi
+if echo $FILES | xargs grep . /dev/null | sed -e '/<programlisting>/,/<\/programlisting>/d' | grep "$enum_regexp" | grep -v '#####'; then
+	stat=1
+	echo Error: some macros in the docs are not prefixed by percent sign.
+	echo Fix this by searching for the following regexp in the above files:
+	echo "	'$enum_regexp'"
+fi >&2
+
+type_regexp="\( .*[^#']\| \|^\)\<cairo[0-9a-z_]*_t\>\($\|[^:]$\|[^:].\)"
+if test "x$SGML_DOCS" = x; then
+	type_regexp='^[^:]*:[/ ][*]'$type_regexp
+else
+	type_regexp='\(.'$type_regexp'\)\|\('$type_regexp'.\)'
+fi
+
+if echo $FILES | xargs grep . /dev/null | sed -e '/<programlisting>/,/<\/programlisting>/d' | grep -v "@Title" | grep "$type_regexp" | grep -v '#####'; then
+	stat=1
+	echo Error: some type names in the docs are not prefixed by hash sign,
+	echo neither are the only token in the doc line followed by colon.
+	echo Fix this by searching for the following regexp in the above files:
+	echo "	'$type_regexp'"
+fi >&2
+
+func_regexp="\([^#']\|^\)\<\(cairo_[][<>/0-9a-z_]*\>[^][<>(]\)"
+if test "x$SGML_DOCS" = x; then
+	func_regexp='^[^:]*:[/ ][*]\(\|[ \t].*\)'$func_regexp
+fi
+
+# We need to filter out gtk-doc markup errors for program listings.
+if echo $FILES | xargs grep . /dev/null | sed -e '/<programlisting>/,/<\/programlisting>/d' | grep "$func_regexp" | grep -v '^[^:]*: [*] [a-z_0-9]*:$' | grep -v '#####'; then
+	stat=1
+	echo Error: some function names in the docs are not followed by parentheses.
+	echo Fix this by searching for the following regexp in the above files:
+	echo "	'$func_regexp'"
+fi >&2
+
+note_regexp='\<NOTE\>'
+if echo $FILES | xargs grep "$note_regexp" /dev/null; then
+	stat=1
+	echo Error: some source files contain the string 'NOTE'.
+	echo Be civil and replace it by 'Note' please.
+fi >&2
+
+# Only run the syntax checker on the source files (not doc/)
+if test -e ./check-doc-syntax.awk; then
+    if echo $FILES | xargs awk -f ./check-doc-syntax.awk ; then
+	    :
+    else
+	    stat=1
+    fi >&2
+fi
+
+exit $stat
diff --git a/libs/cairo-1.16.0/src/check-has-hidden-symbols.c b/libs/cairo-1.16.0/src/check-has-hidden-symbols.c
new file mode 100644
index 0000000..1204127
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-has-hidden-symbols.c
@@ -0,0 +1,3 @@
+#include "cairoint.h"
+
+CAIRO_HAS_HIDDEN_SYMBOLS
diff --git a/libs/cairo-1.16.0/src/check-headers.sh b/libs/cairo-1.16.0/src/check-headers.sh
new file mode 100755
index 0000000..6123295
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-headers.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+LC_ALL=C
+export LC_ALL
+
+test -z "$srcdir" && srcdir=.
+stat=0
+
+echo Checking public headers for missing cairo_public decorators
+
+cd "$srcdir"
+FILES=$all_cairo_headers
+if test "x$FILES" = x; then
+	FILES=`find . -name 'cairo*.h' ! -name '*-private.h' ! -name 'cairoint.h'`
+fi
+
+grep -B 1 '^cairo_.*[ 	]\+(' /dev/null $FILES |
+awk '
+/^--$/ { context=""; public=0; next; }
+/:cairo_.*[ 	]+\(/ { if (!public) {print context; print; print "--";} next; }
+/-cairo_public.*[ 	]/ {public=1;}
+{ context=$0; }
+' |
+sed 's/[.]h-/.h:/' |
+grep . >&2 && stat=1
+
+exit $stat
diff --git a/libs/cairo-1.16.0/src/check-link.c b/libs/cairo-1.16.0/src/check-link.c
new file mode 100644
index 0000000..66ca1b2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-link.c
@@ -0,0 +1,24 @@
+#define CAIRO_VERSION_H 1
+
+#include <cairo.h>
+
+/* get the "real" version info instead of dummy cairo-version.h */
+#undef CAIRO_VERSION_H
+#include "../cairo-version.h"
+
+#include <stdio.h>
+
+int
+main (void)
+{
+  printf ("Check linking to the just built cairo library\n");
+  if (cairo_version () == CAIRO_VERSION) {
+    return 0;
+  } else {
+    fprintf (stderr,
+	     "Error: linked to cairo version %s instead of %s\n",
+	     cairo_version_string (),
+	     CAIRO_VERSION_STRING);
+    return 1;
+  }
+}
diff --git a/libs/cairo-1.16.0/src/check-plt.sh b/libs/cairo-1.16.0/src/check-plt.sh
new file mode 100755
index 0000000..5a9dae1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-plt.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+LC_ALL=C
+export LC_ALL
+
+if which readelf 2>/dev/null >/dev/null; then
+	:
+else
+	echo "'readelf' not found; skipping test"
+	exit 0
+fi
+
+test -z "$srcdir" && srcdir=.
+test -z "$MAKE" && MAKE=make
+stat=0
+
+$MAKE check-has-hidden-symbols.i > /dev/null || exit 1
+if tail -1 check-has-hidden-symbols.i | grep CAIRO_HAS_HIDDEN_SYMBOLS >/dev/null; then
+	echo "Compiler doesn't support symbol visibility; skipping test"
+	exit 0
+fi
+
+for so in .libs/lib*.so; do
+	echo Checking "$so" for local PLT entries
+	readelf -W -r "$so" | grep 'JU\?MP_SLO' | grep 'cairo' >&2 && stat=1
+done
+
+exit $stat
diff --git a/libs/cairo-1.16.0/src/check-preprocessor-syntax.sh b/libs/cairo-1.16.0/src/check-preprocessor-syntax.sh
new file mode 100755
index 0000000..b718f60
--- /dev/null
+++ b/libs/cairo-1.16.0/src/check-preprocessor-syntax.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+
+LC_ALL=C
+export LC_ALL
+
+test -z "$srcdir" && srcdir=.
+cd "$srcdir"
+stat=0
+
+
+HEADERS=$all_cairo_headers
+test "x$HEADERS" = x && HEADERS=`find . -name 'cairo*.h' ! -name 'cairo*-private.h' ! -name 'cairo*-inline.h' ! -name 'cairoint.h'`
+
+PRIVATE=$all_cairo_private
+test "x$PRIVATE" = x && PRIVATE=`find . -name 'cairo*-private.h' -or -name 'cairo*-inline.h' -or -name 'cairoint.h'`
+
+SOURCES=$all_cairo_sources
+test "x$SOURCES" = x && SOURCES=`find . -name 'cairo*.c' -or -name 'cairo*.cpp'`
+
+ALL="/dev/null $HEADERS $PRIVATE $SOURCES"
+
+echo 'Checking that public header files #include "cairo.h" first (or none)'
+
+for x in $HEADERS; do
+	grep '#.*\<include\>' "$x" /dev/null | head -n 1
+done |
+grep -v '"cairo[.]h"' |
+grep -v 'cairo[.]h:' |
+grep . >&2 && stat=1
+
+
+echo 'Checking that private header files #include "some cairo header" first (or none)'
+
+for x in $PRIVATE; do
+	grep '#.*\<include\>' "$x" /dev/null | head -n 1
+done |
+grep -v '"cairo.*[.]h"' |
+grep -v 'cairoint[.]h:' |
+grep . >&2 && stat=1
+
+
+echo 'Checking that source files #include "cairoint.h" first (or none)'
+
+for x in $SOURCES; do
+	grep '#.*\<include\>' "$x" /dev/null | head -n 1
+done |
+grep -v '"cairoint[.]h"' |
+grep . >&2 && stat=1
+
+
+echo 'Checking that there is no #include <cairo.*.h>'
+grep '#.*\<include\>.*<.*cairo' $ALL >&2 && stat=1
+
+
+echo 'Checking that feature conditionals are used with #if only (not #ifdef)'
+grep '#ifdef CAIRO_HAS_' $ALL && stat=1
+grep '#if.*defined[ ]*(CAIRO_HAS_' $ALL && stat=1
+
+exit $stat
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-bo.c b/libs/cairo-1.16.0/src/drm/cairo-drm-bo.c
new file mode 100644
index 0000000..c82f933
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-bo.c
@@ -0,0 +1,99 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#include "cairoint.h"
+#include "cairo-drm-private.h"
+#include "cairo-error-private.h"
+
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <libdrm/drm.h>
+
+#define ERR_DEBUG(x) x
+
+cairo_status_t
+_cairo_drm_bo_open_for_name (const cairo_drm_device_t *dev,
+			     cairo_drm_bo_t *bo,
+			     uint32_t name)
+{
+    struct drm_gem_open open;
+    int ret;
+
+    open.name = name;
+    open.handle = 0;
+    open.size = 0;
+    do {
+	ret = ioctl (dev->fd, DRM_IOCTL_GEM_OPEN, &open);
+    } while (ret == -1 && errno == EINTR);
+    if (ret == -1) {
+	ERR_DEBUG((fprintf (stderr, "Failed to open bo for name %d: %s\n",
+			    name, strerror (errno))));
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    bo->name = name;
+    bo->size = open.size;
+    bo->handle = open.handle;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_drm_bo_flink (const cairo_drm_device_t *dev,
+		     cairo_drm_bo_t *bo)
+{
+    struct drm_gem_flink flink;
+    int ret;
+
+    memset (&flink, 0, sizeof (flink));
+    flink.handle = bo->handle;
+    ret = ioctl (dev->fd, DRM_IOCTL_GEM_FLINK, &flink);
+    if (ret == -1) {
+	ERR_DEBUG((fprintf (stderr, "Failed to flink bo: %s\n",
+			    strerror (errno))));
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    bo->name = flink.name;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_drm_bo_close (const cairo_drm_device_t *dev,
+		     cairo_drm_bo_t *bo)
+{
+    struct drm_gem_close close;
+    int ret;
+
+    close.handle = bo->handle;
+    do {
+	ret = ioctl (dev->fd, DRM_IOCTL_GEM_CLOSE, &close);
+    } while (ret == -1 && errno == EINTR);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-gallium-surface.c b/libs/cairo-1.16.0/src/drm/cairo-drm-gallium-surface.c
new file mode 100644
index 0000000..ca18f73
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-gallium-surface.c
@@ -0,0 +1,826 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2009 Eric Anholt
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+
+#include <dlfcn.h>
+
+#include <state_tracker/drm_api.h>
+#include <pipe/p_format.h>
+#include <pipe/p_screen.h>
+#include <pipe/p_context.h>
+#include <pipe/p_state.h>
+
+#include <util/u_inlines.h>
+
+typedef struct _gallium_surface gallium_surface_t;
+typedef struct _gallium_device gallium_device_t;
+
+struct _gallium_device {
+    cairo_drm_device_t drm;
+
+    void *dlhandle;
+    struct drm_api *api;
+
+    struct pipe_screen *screen;
+    struct pipe_context *pipe;
+
+    int max_size;
+};
+
+struct _gallium_surface {
+    cairo_drm_surface_t drm;
+
+    enum pipe_format pipe_format;
+
+    struct pipe_resource *texture;
+    struct pipe_transfer *map_transfer;
+
+    cairo_surface_t *fallback;
+};
+
+static cairo_surface_t *
+gallium_surface_create_internal (gallium_device_t *device,
+				 enum pipe_format format,
+				 int width, int height);
+
+static inline gallium_device_t *
+gallium_device (gallium_surface_t *surface)
+{
+    return (gallium_device_t *) surface->drm.base.device;
+}
+
+static cairo_format_t
+_cairo_format_from_pipe_format (enum pipe_format format)
+{
+    switch ((int) format) {
+    case PIPE_FORMAT_A8_UNORM:
+	return CAIRO_FORMAT_A8;
+    case PIPE_FORMAT_A8R8G8B8_UNORM:
+	return CAIRO_FORMAT_ARGB32;
+    default:
+	return CAIRO_FORMAT_INVALID;
+    }
+}
+
+static enum pipe_format
+pipe_format_from_format (cairo_format_t format)
+{
+    switch ((int) format) {
+    case CAIRO_FORMAT_A8:
+	return PIPE_FORMAT_A8_UNORM;
+    case CAIRO_FORMAT_ARGB32:
+	return PIPE_FORMAT_A8R8G8B8_UNORM;
+    default:
+	return (enum pipe_format) -1;
+    }
+}
+
+static enum pipe_format
+pipe_format_from_content (cairo_content_t content)
+{
+    if (content == CAIRO_CONTENT_ALPHA)
+	return PIPE_FORMAT_A8_UNORM;
+    else
+	return PIPE_FORMAT_A8R8G8B8_UNORM;
+}
+
+static cairo_bool_t
+format_is_supported_destination (gallium_device_t *device,
+	                         enum pipe_format format)
+{
+    if (format == (enum pipe_format) -1)
+	return FALSE;
+
+    return device->screen->is_format_supported (device->screen,
+					        format,
+						0,
+						PIPE_BIND_RENDER_TARGET,
+						0);
+}
+
+#if 0
+static cairo_bool_t
+format_is_supported_source (gallium_device_t *device,
+	                    enum pipe_format format)
+{
+    return device->screen->is_format_supported (device->screen,
+					        format,
+						0,
+						PIPE_BIND_SAMPLER_VIEW,
+						0);
+}
+#endif
+
+static cairo_surface_t *
+gallium_surface_create_similar (void			*abstract_src,
+				cairo_content_t		 content,
+				int			 width,
+				int			 height)
+{
+    gallium_surface_t *other = abstract_src;
+    gallium_device_t *device = gallium_device (other);
+    enum pipe_format pipe_format;
+    cairo_surface_t *surface = NULL;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&device->drm.base);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    if (MAX (width, height) > device->max_size)
+	goto RELEASE;
+
+    if (content == other->drm.base.content)
+	pipe_format = other->pipe_format;
+    else
+	pipe_format = pipe_format_from_content (content);
+
+    if (! format_is_supported_destination (device, pipe_format))
+	goto RELEASE;
+
+    surface = gallium_surface_create_internal (device,
+					       pipe_format,
+					       width, height);
+
+RELEASE:
+    cairo_device_release (&device->drm.base);
+
+    return surface;
+}
+
+static cairo_status_t
+gallium_surface_finish (void *abstract_surface)
+{
+    gallium_surface_t *surface = abstract_surface;
+    gallium_device_t *device = gallium_device (surface);
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&device->drm.base);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	pipe_resource_reference (&surface->texture, NULL);
+	cairo_device_release (&device->drm.base);
+    }
+
+    return _cairo_drm_surface_finish (&surface->drm);
+}
+
+static cairo_surface_t *
+gallium_surface_map_to_image (gallium_surface_t *surface)
+{
+    gallium_device_t *device = gallium_device (surface);
+    cairo_status_t status;
+    void *ptr = NULL;
+
+    status = cairo_device_acquire (&device->drm.base);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    surface->map_transfer =
+	  pipe_get_transfer (device->pipe,
+			     surface->texture, 0, 0, 0,
+			     PIPE_TRANSFER_MAP_DIRECTLY |
+			     PIPE_TRANSFER_READ_WRITE,
+			     0, 0,
+			     surface->drm.width,
+			     surface->drm.height);
+    if (likely (surface->map_transfer != NULL))
+	ptr = device->pipe->transfer_map (device->pipe, surface->map_transfer);
+
+    cairo_device_release (&device->drm.base);
+
+    if (unlikely (ptr == NULL)) {
+	if (surface->map_transfer != NULL) {
+	    device->pipe->transfer_destroy (device->pipe,
+					    surface->map_transfer);
+	    surface->map_transfer = NULL;
+	}
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    return cairo_image_surface_create_for_data (ptr,
+						surface->drm.format,
+						surface->drm.width,
+						surface->drm.height,
+						surface->map_transfer->stride);
+}
+
+static cairo_status_t
+gallium_surface_acquire_source_image (void *abstract_surface,
+				      cairo_image_surface_t **image_out,
+				      void **image_extra)
+{
+    gallium_surface_t *surface = abstract_surface;
+    gallium_device_t *device = gallium_device (surface);
+    cairo_format_t format;
+    cairo_surface_t *image;
+    cairo_status_t status;
+    struct pipe_transfer *transfer;
+    void *ptr;
+
+    if (surface->fallback != NULL) {
+	*image_out = (cairo_image_surface_t *)
+	    cairo_surface_reference (surface->fallback);
+	*image_extra = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (unlikely (surface->drm.width == 0 || surface->drm.height == 0)) {
+	image = cairo_image_surface_create (surface->drm.format, 0, 0);
+	if (unlikely (image->status))
+	    return image->status;
+
+	*image_out = (cairo_image_surface_t *) image;
+	*image_extra = NULL;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    format = _cairo_format_from_pipe_format (surface->pipe_format);
+    if (format == CAIRO_FORMAT_INVALID)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = cairo_device_acquire (&device->drm.base);
+    if (unlikely (status))
+	return status;
+
+    transfer = pipe_get_transfer (device->pipe,
+				  surface->texture, 0, 0, 0,
+				  PIPE_TRANSFER_READ,
+				  0, 0,
+				  surface->drm.width,
+				  surface->drm.height);
+    ptr = device->pipe->transfer_map (device->pipe, transfer);
+    cairo_device_release (&device->drm.base);
+
+    image = cairo_image_surface_create_for_data (ptr, format,
+						 surface->drm.width,
+						 surface->drm.height,
+						 surface->drm.stride);
+    if (unlikely (image->status))
+	return image->status;
+
+    *image_out = (cairo_image_surface_t *) image;
+    *image_extra = transfer;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+gallium_surface_release_source_image (void *abstract_surface,
+				      cairo_image_surface_t *image,
+				      void *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+
+    if (image_extra != NULL) {
+	gallium_device_t *device = gallium_device (abstract_surface);
+
+	device->pipe->transfer_unmap (device->pipe, image_extra);
+	device->pipe->transfer_destroy (device->pipe, image_extra);
+    }
+}
+
+static cairo_status_t
+gallium_surface_flush (void *abstract_surface,
+		       unsigned flags)
+{
+    gallium_surface_t *surface = abstract_surface;
+    gallium_device_t *device = gallium_device (surface);
+    cairo_status_t status;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->fallback == NULL) {
+	device->pipe->flush (device->pipe,
+			     PIPE_FLUSH_RENDER_CACHE,
+			     NULL);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    /* kill any outstanding maps */
+    cairo_surface_finish (surface->fallback);
+
+    status = cairo_device_acquire (&device->drm.base);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	device->pipe->transfer_unmap (device->pipe,
+				      surface->map_transfer);
+	device->pipe->transfer_destroy (device->pipe,
+					surface->map_transfer);
+	surface->map_transfer = NULL;
+	cairo_device_release (&device->drm.base);
+    }
+
+    status = cairo_surface_status (surface->fallback);
+    cairo_surface_destroy (surface->fallback);
+    surface->fallback = NULL;
+
+    return status;
+}
+
+static cairo_int_status_t
+gallium_surface_paint (void			*abstract_surface,
+			  cairo_operator_t	 op,
+			  const cairo_pattern_t	*source,
+			  cairo_clip_t		*clip)
+{
+    gallium_surface_t *surface = abstract_surface;
+
+    if (surface->fallback == NULL) {
+	/* XXX insert magic */
+	surface->fallback = gallium_surface_map_to_image (surface);
+    }
+
+    return _cairo_surface_paint (surface->fallback, op, source, clip);
+}
+
+static cairo_int_status_t
+gallium_surface_mask (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 const cairo_pattern_t	*mask,
+			 cairo_clip_t		*clip)
+{
+    gallium_surface_t *surface = abstract_surface;
+
+    if (surface->fallback == NULL) {
+	/* XXX insert magic */
+	surface->fallback = gallium_surface_map_to_image (surface);
+    }
+
+    return _cairo_surface_mask (surface->fallback,
+				op, source, mask,
+				clip);
+}
+
+static cairo_int_status_t
+gallium_surface_stroke (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   cairo_path_fixed_t		*path,
+			   const cairo_stroke_style_t	*style,
+			   const cairo_matrix_t		*ctm,
+			   const cairo_matrix_t		*ctm_inverse,
+			   double			 tolerance,
+			   cairo_antialias_t		 antialias,
+			   cairo_clip_t			*clip)
+{
+    gallium_surface_t *surface = abstract_surface;
+
+    if (surface->fallback == NULL) {
+	/* XXX insert magic */
+	surface->fallback = gallium_surface_map_to_image (surface);
+    }
+
+    return _cairo_surface_stroke (surface->fallback,
+				  op, source,
+				  path, style,
+				  ctm, ctm_inverse,
+				  tolerance, antialias,
+				  clip);
+}
+
+static cairo_int_status_t
+gallium_surface_fill (void			*abstract_surface,
+			 cairo_operator_t	 op,
+			 const cairo_pattern_t	*source,
+			 cairo_path_fixed_t	*path,
+			 cairo_fill_rule_t	 fill_rule,
+			 double			 tolerance,
+			 cairo_antialias_t	 antialias,
+			 cairo_clip_t		*clip)
+{
+    gallium_surface_t *surface = abstract_surface;
+
+    if (surface->fallback == NULL) {
+	/* XXX insert magic */
+	surface->fallback = gallium_surface_map_to_image (surface);
+    }
+
+    return _cairo_surface_fill (surface->fallback,
+				op, source,
+				path, fill_rule,
+				tolerance, antialias,
+				clip);
+}
+
+static cairo_int_status_t
+gallium_surface_glyphs (void				*abstract_surface,
+			   cairo_operator_t		 op,
+			   const cairo_pattern_t	*source,
+			   cairo_glyph_t		*glyphs,
+			   int				 num_glyphs,
+			   cairo_scaled_font_t		*scaled_font,
+			   cairo_clip_t			*clip,
+			   int *num_remaining)
+{
+    gallium_surface_t *surface = abstract_surface;
+
+    *num_remaining = 0;
+
+    if (surface->fallback == NULL) {
+	/* XXX insert magic */
+	surface->fallback = gallium_surface_map_to_image (surface);
+    }
+
+    return _cairo_surface_show_text_glyphs (surface->fallback,
+					    op, source,
+					    NULL, 0,
+					    glyphs, num_glyphs,
+					    NULL, 0, 0,
+					    scaled_font,
+					    clip);
+}
+
+static const cairo_surface_backend_t gallium_surface_backend = {
+    CAIRO_SURFACE_TYPE_DRM,
+    _cairo_default_context_create,
+
+    gallium_surface_create_similar,
+    gallium_surface_finish,
+
+    NULL,
+    gallium_surface_acquire_source_image,
+    gallium_surface_release_source_image,
+
+    NULL, //gallium_surface_acquire_dest_image,
+    NULL, //gallium_surface_release_dest_image,
+    NULL, //gallium_surface_clone_similar,
+    NULL, //gallium_surface_composite,
+    NULL, //gallium_surface_fill_rectangles,
+    NULL, //gallium_surface_composite_trapezoids,
+    NULL, //gallium_surface_create_span_renderer,
+    NULL, //gallium_surface_check_span_renderer,
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_drm_surface_get_extents,
+    NULL, /* old_show_glyphs */
+    _cairo_drm_surface_get_font_options,
+    gallium_surface_flush,
+    NULL, /* mark_dirty_rectangle */
+    NULL, //gallium_surface_scaled_font_fini,
+    NULL, //gallium_surface_scaled_glyph_fini,
+
+    gallium_surface_paint,
+    gallium_surface_mask,
+    gallium_surface_stroke,
+    gallium_surface_fill,
+    gallium_surface_glyphs,
+
+    NULL, /* snapshot */
+
+    NULL, /* is_similar */
+
+    NULL, /* reset */
+};
+
+static int
+gallium_format_stride_for_width (enum pipe_format format, int width)
+{
+    int stride;
+
+    stride = 1024; /* XXX fugly */
+    while (stride < width)
+	stride *= 2;
+
+    if (format == PIPE_FORMAT_A8R8G8B8_UNORM)
+	stride *= 4;
+
+    return stride;
+}
+
+static cairo_drm_bo_t *
+_gallium_fake_bo_create (uint32_t size, uint32_t name)
+{
+    cairo_drm_bo_t *bo;
+
+    /* XXX integrate with winsys handle */
+
+    bo = _cairo_malloc (sizeof (cairo_drm_bo_t));
+
+    CAIRO_REFERENCE_COUNT_INIT (&bo->ref_count, 1);
+    bo->name = name;
+    bo->handle = 0;
+    bo->size = size;
+
+    return bo;
+}
+
+static void
+_gallium_fake_bo_release (void *dev, void *bo)
+{
+    free (bo);
+}
+
+static cairo_surface_t *
+gallium_surface_create_internal (gallium_device_t *device,
+				 enum pipe_format pipe_format,
+				 int width, int height)
+{
+    gallium_surface_t *surface;
+    struct pipe_resource template;
+    cairo_status_t status;
+    cairo_format_t format;
+    int stride, size;
+
+    surface = _cairo_malloc (sizeof (gallium_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    format = _cairo_format_from_pipe_format (pipe_format);
+    _cairo_surface_init (&surface->drm.base,
+			 &gallium_surface_backend,
+			 &device->drm.base,
+			 _cairo_content_from_format (format));
+    _cairo_drm_surface_init (&surface->drm, format, width, height);
+
+    stride = gallium_format_stride_for_width (pipe_format, width);
+    size = stride * height;
+
+    surface->drm.stride = stride;
+    surface->drm.bo = _gallium_fake_bo_create (size, 0);
+
+    memset(&template, 0, sizeof(template));
+    template.target = PIPE_TEXTURE_2D;
+    template.format = pipe_format;
+    template.width0 = width;
+    template.height0 = height;
+    template.depth0 = 1;
+    template.last_level = 0;
+    template.bind = PIPE_BIND_RENDER_TARGET;
+    surface->texture = device->screen->resource_create (device->screen,
+							&template);
+
+    if (unlikely (surface->texture == NULL)) {
+	status = _cairo_drm_surface_finish (&surface->drm);
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    surface->pipe_format = pipe_format;
+    surface->texture = NULL;
+
+    return &surface->drm.base;
+}
+
+static cairo_surface_t *
+gallium_surface_create (cairo_drm_device_t *base_dev,
+			cairo_format_t format,
+			int width, int height)
+{
+    gallium_device_t *device = (gallium_device_t *) base_dev;
+    cairo_surface_t *surface;
+    enum pipe_format pipe_format;
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&device->drm.base);
+
+    if (MAX (width, height) > device->max_size) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+	goto RELEASE;
+    }
+
+    pipe_format = pipe_format_from_format (format);
+    if (! format_is_supported_destination (device, pipe_format)) {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+	goto RELEASE;
+    }
+
+    surface = gallium_surface_create_internal (device,
+					       pipe_format,
+					       width, height);
+
+RELEASE:
+    cairo_device_release (&device->drm.base);
+
+    return surface;
+}
+
+#if 0
+static cairo_surface_t *
+gallium_surface_create_for_name (cairo_drm_device_t *base_dev,
+				 unsigned int name,
+				 cairo_format_t format,
+				 int width, int height, int stride)
+{
+    gallium_device_t *device;
+    gallium_surface_t *surface;
+    cairo_status_t status;
+    cairo_content_t content;
+
+    surface = _cairo_malloc (sizeof (gallium_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_A8:
+	surface->pipe_format = PIPE_FORMAT_A8_UNORM;
+	break;
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_ARGB32:
+	surface->pipe_format = PIPE_FORMAT_A8R8G8B8_UNORM;
+	break;
+    }
+
+    status = cairo_device_acquire (&device->drm.base);
+
+    if (MAX (width, height) > device->max_size) {
+	cairo_device_release (&device->drm.base);
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+
+    if (! format_is_supported_destination (device, surface->pipe_format)) {
+	cairo_device_release (&device->drm.base);
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    }
+
+    content = _cairo_content_from_format (format);
+    _cairo_surface_init (&surface->drm.base,
+			 &gallium_surface_backend,
+			 content);
+    _cairo_drm_surface_init (&surface->drm, base_dev);
+
+    surface->drm.bo = _gallium_fake_bo_create (height * stride, name);
+
+    surface->drm.width  = width;
+    surface->drm.height = height;
+    surface->drm.stride = stride;
+
+#if 0
+    /* XXX screen->create_from_handle */
+    surface->buffer = device->api->buffer_from_handle (device->api,
+						       device->screen,
+						       "cairo-gallium alien",
+						       name);
+    if (unlikely (surface->buffer == NULL)) {
+	status = _cairo_drm_surface_finish (&surface->drm);
+	cairo_device_release (&device->drm.base);
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+#endif
+
+    surface->texture = NULL;
+
+    surface->fallback = NULL;
+
+    cairo_device_release (&device->drm.base);
+
+    return &surface->drm.base;
+}
+
+static cairo_int_status_t
+gallium_surface_flink (void *abstract_surface)
+{
+    gallium_surface_t *surface = abstract_surface;
+    gallium_device_t *device;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    status = cairo_device_acquire (&device->drm.base);
+    if (! device->api->global_handle_from_buffer (device->api,
+						  device->screen,
+						  surface->buffer,
+						  &surface->drm.bo->name))
+    {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+    cairo_device_release (&device->drm.base);
+
+    return status;
+}
+#endif
+
+static void
+gallium_device_destroy (void *abstract_device)
+{
+    gallium_device_t *device = abstract_device;
+
+    device->pipe->destroy (device->pipe);
+    device->screen->destroy (device->screen);
+    device->api->destroy (device->api);
+
+    dlclose (device->dlhandle);
+    free (device);
+}
+
+cairo_drm_device_t *
+_cairo_drm_gallium_device_create (int fd, dev_t dev, int vendor_id, int chip_id)
+{
+    gallium_device_t *device;
+    cairo_status_t status;
+    void *handle;
+    const char *libdir;
+    char buf[4096];
+    struct drm_api *(*ctor) (void);
+
+    /* XXX need search path + probe */
+    libdir = getenv ("CAIRO_GALLIUM_LIBDIR");
+    if (libdir == NULL)
+	libdir = "/usr/lib/dri";
+    buf[snprintf (buf, sizeof (buf)-1, "%s/i915_dri.so", libdir)] = '\0';
+
+    handle = dlopen (buf, RTLD_LAZY);
+    if (handle == NULL)
+	return NULL;
+
+    ctor = dlsym (handle, "drm_api_create");
+    if (ctor == NULL) {
+	dlclose (handle);
+	return NULL;
+    }
+
+    device = _cairo_malloc (sizeof (gallium_device_t));
+    if (device == NULL) {
+	dlclose (handle);
+	return _cairo_drm_device_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    device->dlhandle = handle;
+
+    device->drm.surface.create = gallium_surface_create;
+    device->drm.surface.create_for_name = NULL;
+    //device->drm.surface.create_for_name = gallium_surface_create_for_name;
+    device->drm.surface.enable_scan_out = NULL;
+    //device->drm.surface.flink = gallium_surface_flink;
+    device->drm.surface.flink = NULL;
+
+    device->drm.device.flush = NULL;
+    device->drm.device.throttle = NULL;
+    device->drm.device.destroy = gallium_device_destroy;
+
+    device->drm.bo.release = _gallium_fake_bo_release;
+
+    device->api = ctor ();
+    if (device->api == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP;
+    }
+
+    device->screen = device->api->create_screen (device->api, fd, NULL);
+    if (device->screen == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_API;
+    }
+
+    device->max_size = 1 << device->screen->get_param (device->screen,
+						       PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
+
+    device->pipe = device->screen->context_create (device->screen, device);
+    if (device->pipe == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_SCREEN;
+    }
+
+    return _cairo_drm_device_init (&device->drm,
+				   fd, dev,
+				   0, 0,
+				   device->max_size);
+
+CLEANUP_SCREEN:
+    device->screen->destroy (device->screen);
+CLEANUP_API:
+    device->api->destroy (device->api);
+CLEANUP:
+    free (device);
+    dlclose (handle);
+    return _cairo_drm_device_create_in_error (status);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i915-glyphs.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-glyphs.c
new file mode 100644
index 0000000..3b0efc2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-glyphs.c
@@ -0,0 +1,564 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-drm-i915-private.h"
+#include "cairo-error-private.h"
+#include "cairo-rtree-private.h"
+#include "cairo-clip-inline.h"
+
+static void
+i915_emit_glyph_rectangle_zero (i915_device_t *device,
+				i915_shader_t *shader,
+				int x1, int y1,
+				int x2, int y2,
+				intel_glyph_t *glyph)
+{
+    float *v;
+
+    /* Each vertex is:
+     *   2 vertex coordinates
+     */
+
+    v = i915_add_rectangle (device);
+    *v++ = x2; *v++ = y2;
+    *v++ = x1; *v++ = y2;
+    *v++ = x1; *v++ = y1;
+}
+
+static void
+i915_emit_glyph_rectangle_constant (i915_device_t *device,
+				    i915_shader_t *shader,
+				    int x1, int y1,
+				    int x2, int y2,
+				    intel_glyph_t *glyph)
+{
+    float *v;
+
+    /* Each vertex is:
+     *   2 vertex coordinates
+     *   2 glyph texture coordinates
+     */
+
+    v = i915_add_rectangle (device);
+
+    /* bottom right */
+    *v++ = x2; *v++ = y2;
+    *v++ = glyph->texcoord[0];
+
+    /* bottom left */
+    *v++ = x1; *v++ = y2;
+    *v++ = glyph->texcoord[1];
+
+    /* top left */
+    *v++ = x1; *v++ = y1;
+    *v++ = glyph->texcoord[2];
+}
+
+static void
+i915_emit_glyph_rectangle_general (i915_device_t *device,
+				   i915_shader_t *shader,
+				   int x1, int y1,
+				   int x2, int y2,
+				   intel_glyph_t *glyph)
+{
+    double s, t;
+    float *v;
+
+    /* Each vertex is:
+     *   2 vertex coordinates
+     *   [0-2] source texture coordinates
+     *   2 glyph texture coordinates
+     */
+
+    v = i915_add_rectangle (device);
+
+    /* bottom right */
+    *v++ = x2; *v++ = y2;
+    s = x2, t = y2;
+    switch (shader->source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*v++ = i915_shader_linear_texcoord (&shader->source.linear, s, t);
+	break;
+    case VS_TEXTURE:
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = s; *v++ = t;
+	break;
+    case VS_TEXTURE_16:
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    *v++ = glyph->texcoord[0];
+
+    /* bottom left */
+    *v++ = x1; *v++ = y2;
+    s = x1, t = y2;
+    switch (shader->source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*v++ = i915_shader_linear_texcoord (&shader->source.linear, s, t);
+	break;
+    case VS_TEXTURE:
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = s; *v++ = t;
+	break;
+    case VS_TEXTURE_16:
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    *v++ = glyph->texcoord[1];
+
+    /* top left */
+    *v++ = x1; *v++ = y1;
+    s = x1, t = y2;
+    switch (shader->source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*v++ = i915_shader_linear_texcoord (&shader->source.linear, s, t);
+	break;
+    case VS_TEXTURE:
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = s; *v++ = t;
+	break;
+    case VS_TEXTURE_16:
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    *v++ = glyph->texcoord[2];
+}
+
+typedef void
+(*i915_emit_glyph_rectangle_func_t) (i915_device_t *device,
+				     i915_shader_t *shader,
+				     int x1, int y1,
+				     int x2, int y2,
+				     intel_glyph_t *glyph);
+
+static cairo_status_t
+i915_surface_mask_internal (i915_surface_t *dst,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    i915_surface_t *mask,
+			    cairo_clip_t		*clip,
+			    const cairo_composite_rectangles_t *extents)
+{
+    i915_device_t *device;
+    i915_shader_t shader;
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status;
+
+    i915_shader_init (&shader, dst, op, 1.);
+
+    status = i915_shader_acquire_pattern (&shader, &shader.source,
+					  source, &extents->bounded);
+    if (unlikely (status))
+	return status;
+
+    shader.mask.type.vertex = VS_TEXTURE_16;
+    shader.mask.type.pattern = PATTERN_TEXTURE;
+    shader.mask.type.fragment = FS_TEXTURE;
+    shader.mask.base.content = mask->intel.drm.base.content;
+    shader.mask.base.texfmt = TEXCOORDFMT_2D_16;
+    shader.mask.base.n_samplers = 1;
+    shader.mask.base.sampler[0] =
+	(MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	i915_texture_filter (CAIRO_FILTER_NEAREST);
+    shader.mask.base.sampler[1] =
+	SS3_NORMALIZED_COORDS |
+	i915_texture_extend (CAIRO_EXTEND_NONE);
+
+    cairo_matrix_init_translate (&shader.mask.base.matrix,
+				 -extents->bounded.x,
+				 -extents->bounded.y);
+    cairo_matrix_scale (&shader.mask.base.matrix,
+			1. / mask->intel.drm.width,
+			1. / mask->intel.drm.height);
+
+    shader.mask.base.bo = intel_bo_reference (to_intel_bo (mask->intel.drm.bo));
+    shader.mask.base.offset[0] = 0;
+    shader.mask.base.map[0] = mask->map0;
+    shader.mask.base.map[1] = mask->map1;
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+
+	if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1)
+	    clip_region = NULL;
+
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    i915_shader_set_clip (&shader, clip);
+    }
+
+    status = cairo_device_acquire (dst->intel.drm.base.device);
+    if (unlikely (status))
+	goto CLEANUP_SHADER;
+
+    device = i915_device (dst);
+
+    status = i915_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto CLEANUP_DEVICE;
+
+    if (clip_region != NULL) {
+	unsigned int n, num_rectangles;
+
+	num_rectangles = cairo_region_num_rectangles (clip_region);
+	for (n = 0; n < num_rectangles; n++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (clip_region, n, &rect);
+
+	    shader.add_rectangle (&shader,
+				  rect.x, rect.y,
+				  rect.x + rect.width, rect.y + rect.height);
+	}
+    } else {
+	shader.add_rectangle (&shader,
+			      extents->bounded.x, extents->bounded.y,
+			      extents->bounded.x + extents->bounded.width,
+			      extents->bounded.y + extents->bounded.height);
+    }
+
+    if (! extents->is_bounded)
+	status = i915_fixup_unbounded (dst, extents, clip);
+
+CLEANUP_DEVICE:
+    cairo_device_release (&device->intel.base.base);
+CLEANUP_SHADER:
+    i915_shader_fini (&shader);
+    return status;
+}
+
+cairo_int_status_t
+i915_surface_glyphs (void			*abstract_surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_glyph_t		*glyphs,
+		     int			 num_glyphs,
+		     cairo_scaled_font_t	*scaled_font,
+		     cairo_clip_t		*clip,
+		     int *num_remaining)
+{
+    i915_surface_t *surface = abstract_surface;
+    i915_surface_t *mask = NULL;
+    i915_device_t *device;
+    i915_shader_t shader;
+    cairo_composite_rectangles_t extents;
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    cairo_bool_t overlap;
+    cairo_region_t *clip_region = NULL;
+    intel_bo_t *last_bo = NULL;
+    i915_emit_glyph_rectangle_func_t emit_func;
+    cairo_scaled_glyph_t *glyph_cache[64];
+    cairo_status_t status;
+    int mask_x = 0, mask_y = 0;
+    int i = 0;
+
+    *num_remaining = 0;
+    status = _cairo_composite_rectangles_init_for_glyphs (&extents,
+							  surface->intel.drm.width,
+							  surface->intel.drm.height,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip,
+							  &overlap);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_clip_contains_rectangle (clip, &extents.mask))
+	clip = NULL;
+
+    if (clip != NULL && extents.is_bounded) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	status = _cairo_clip_rectangle (clip, &extents.bounded);
+	if (unlikely (status))
+	    return status;
+
+	have_clip = TRUE;
+    }
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	if (unlikely (_cairo_status_is_error (status) ||
+		      status == CAIRO_INT_STATUS_NOTHING_TO_DO))
+	{
+	    if (have_clip)
+		_cairo_clip_fini (&local_clip);
+	    return status;
+	}
+    }
+
+    if (i915_surface_needs_tiling (surface)) {
+	ASSERT_NOT_REACHED;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (overlap || ! extents.is_bounded) {
+	cairo_format_t format;
+
+	format = CAIRO_FORMAT_A8;
+	if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL)
+	    format = CAIRO_FORMAT_ARGB32;
+
+	mask = (i915_surface_t *)
+	    i915_surface_create_internal (&i915_device (surface)->intel.base,
+					  format,
+					  extents.bounded.width,
+					  extents.bounded.height,
+					  I915_TILING_DEFAULT,
+					  TRUE);
+	if (unlikely (mask->intel.drm.base.status))
+	    return mask->intel.drm.base.status;
+
+	status = i915_surface_clear (mask);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&mask->intel.drm.base);
+	    return status;
+	}
+
+	i915_shader_init (&shader, mask, CAIRO_OPERATOR_ADD, 1.);
+
+	status = i915_shader_acquire_pattern (&shader, &shader.source,
+					      &_cairo_pattern_white.base,
+					      &extents.bounded);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&mask->intel.drm.base);
+	    return status;
+	}
+
+	mask_x = -extents.bounded.x;
+	mask_y = -extents.bounded.y;
+    } else {
+	i915_shader_init (&shader, surface, op, 1.);
+
+	status = i915_shader_acquire_pattern (&shader, &shader.source,
+					      source, &extents.bounded);
+	if (unlikely (status))
+	    return status;
+
+	if (clip != NULL) {
+	    status = _cairo_clip_get_region (clip, &clip_region);
+
+	    if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1)
+		clip_region = NULL;
+
+	    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+		i915_shader_set_clip (&shader, clip);
+	}
+    }
+
+    shader.mask.type.fragment = FS_TEXTURE;
+    shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */
+    shader.mask.base.texfmt = TEXCOORDFMT_2D_16;
+    shader.mask.base.n_samplers = 1;
+    shader.mask.base.sampler[0] =
+	(MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	i915_texture_filter (CAIRO_FILTER_NEAREST);
+    shader.mask.base.sampler[1] =
+	SS3_NORMALIZED_COORDS |
+	i915_texture_extend (CAIRO_EXTEND_NONE);
+
+    switch (shader.source.type.vertex) {
+    case VS_ZERO:
+	emit_func = i915_emit_glyph_rectangle_zero;
+	break;
+    case VS_CONSTANT:
+	emit_func = i915_emit_glyph_rectangle_constant;
+	break;
+    default:
+    case VS_LINEAR:
+    case VS_TEXTURE:
+    case VS_TEXTURE_16:
+	emit_func = i915_emit_glyph_rectangle_general;
+	break;
+    }
+
+    status = cairo_device_acquire (surface->intel.drm.base.device);
+    if (unlikely (status))
+	goto CLEANUP_SHADER;
+
+    device = i915_device (surface);
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    if (scaled_font->surface_private == NULL) {
+	scaled_font->surface_private = device;
+	scaled_font->surface_backend = surface->intel.drm.base.backend;
+	cairo_list_add (&scaled_font->link, &device->intel.fonts);
+    }
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+
+    for (i = 0; i < num_glyphs; i++) {
+	cairo_scaled_glyph_t *scaled_glyph;
+	int x, y, x1, x2, y1, y2;
+	int cache_index = glyphs[i].index % ARRAY_LENGTH (glyph_cache);
+	intel_glyph_t *glyph;
+
+	scaled_glyph = glyph_cache[cache_index];
+	if (scaled_glyph == NULL ||
+	    _cairo_scaled_glyph_index (scaled_glyph) != glyphs[i].index)
+	{
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 glyphs[i].index,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &scaled_glyph);
+	    if (unlikely (status))
+		goto FINISH;
+
+	    glyph_cache[cache_index] = scaled_glyph;
+	}
+
+	if (unlikely (scaled_glyph->metrics.width  == 0 ||
+		      scaled_glyph->metrics.height == 0))
+	{
+	    continue;
+	}
+
+	/* XXX glyph images are snapped to pixel locations */
+	x = _cairo_lround (glyphs[i].x);
+	y = _cairo_lround (glyphs[i].y);
+
+	x1 = x + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x);
+	y1 = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y);
+	x2 = x + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x);
+	y2 = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y);
+
+	if (x2 < extents.bounded.x ||
+	    y2 < extents.bounded.y ||
+	    x1 > extents.bounded.x + extents.bounded.width ||
+	    y1 > extents.bounded.y + extents.bounded.height)
+	{
+	    continue;
+	}
+
+	if (scaled_glyph->surface_private == NULL) {
+	    status = intel_get_glyph (&device->intel, scaled_font, scaled_glyph);
+	    if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO)) {
+		status = CAIRO_STATUS_SUCCESS;
+		continue;
+	    }
+	    if (unlikely (status))
+		goto FINISH;
+	}
+
+	glyph = intel_glyph_pin (scaled_glyph->surface_private);
+	if (glyph->cache->buffer.bo != last_bo) {
+	    intel_buffer_cache_t *cache = glyph->cache;
+
+	    shader.mask.base.bo = cache->buffer.bo;
+	    shader.mask.base.offset[0] = cache->buffer.offset;
+	    shader.mask.base.map[0] = cache->buffer.map0;
+	    shader.mask.base.map[1] = cache->buffer.map1;
+	    shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */
+
+	    status = i915_shader_commit (&shader, device);
+	    if (unlikely (status))
+		goto FINISH;
+
+	    last_bo = cache->buffer.bo;
+	}
+
+	x2 = x1 + glyph->width;
+	y2 = y1 + glyph->height;
+
+	if (mask_x)
+	    x1 += mask_x, x2 += mask_x;
+	if (mask_y)
+	    y1 += mask_y, y2 += mask_y;
+
+	/* XXX clip glyph */
+	emit_func (device, &shader, x1, y1, x2, y2, glyph);
+    }
+
+    status = CAIRO_STATUS_SUCCESS;
+  FINISH:
+    _cairo_scaled_font_thaw_cache (scaled_font);
+    cairo_device_release (surface->intel.drm.base.device);
+  CLEANUP_SHADER:
+    i915_shader_fini (&shader);
+
+    if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) {
+	cairo_path_fixed_t path;
+
+	_cairo_path_fixed_init (&path);
+	status = _cairo_scaled_font_glyph_path (scaled_font,
+						glyphs + i, num_glyphs - i,
+						&path);
+	if (mask_x | mask_y) {
+	    _cairo_path_fixed_translate (&path,
+					 _cairo_fixed_from_int (mask_x),
+					 _cairo_fixed_from_int (mask_y));
+	}
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = surface->intel.drm.base.backend->fill (shader.target,
+							    shader.op,
+							    mask != NULL ? &_cairo_pattern_white.base : source,
+							    &path,
+							    CAIRO_FILL_RULE_WINDING,
+							    0,
+							    scaled_font->options.antialias,
+							    clip);
+	}
+	_cairo_path_fixed_fini (&path);
+    }
+
+    if (mask != NULL) {
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = i915_surface_mask_internal (surface, op, source, mask,
+					         clip, &extents);
+	}
+	cairo_surface_finish (&mask->intel.drm.base);
+	cairo_surface_destroy (&mask->intel.drm.base);
+    }
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i915-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-private.h
new file mode 100644
index 0000000..c750cf4
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-private.h
@@ -0,0 +1,1270 @@
+/*
+ * Copyright © 2006, 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_DRM_I915_PRIVATE_H
+#define CAIRO_DRM_I915_PRIVATE_H
+
+#include "cairo-types-private.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-intel-private.h"
+#include "cairo-drm-intel-command-private.h"
+#include "cairo-drm-intel-ioctl-private.h"
+#include "cairo-freelist-private.h"
+
+#include <setjmp.h>
+
+#define I915_VERBOSE 1
+
+#define I915_MAX_TEX_INDIRECT 4
+#define I915_MAX_TEX_INSN     32
+#define I915_MAX_ALU_INSN     64
+#define I915_MAX_DECL_INSN    27
+#define I915_MAX_TEMPORARY    16
+
+/* Each instruction is 3 dwords long, though most don't require all
+ * this space.  Maximum of 123 instructions.  Smaller maxes per insn
+ * type.
+ */
+#define _3DSTATE_PIXEL_SHADER_PROGRAM    (CMD_3D|(0x1d<<24)|(0x5<<16))
+
+#define REG_TYPE_R                 0 /* temporary regs, no need to
+				      * dcl, must be written before
+				      * read -- Preserved between
+				      * phases.
+				      */
+#define REG_TYPE_T                 1 /* Interpolated values, must be
+				      * dcl'ed before use.
+				      *
+				      * 0..7: texture coord,
+				      * 8: diffuse spec,
+				      * 9: specular color,
+				      * 10: fog parameter in w.
+				      */
+#define REG_TYPE_CONST             2 /* Restriction: only one const
+				      * can be referenced per
+				      * instruction, though it may be
+				      * selected for multiple inputs.
+				      * Constants not initialized
+				      * default to zero.
+				      */
+#define REG_TYPE_S                 3 /* sampler */
+#define REG_TYPE_OC                4 /* output color (rgba) */
+#define REG_TYPE_OD                5 /* output depth (w), xyz are
+				      * temporaries.  If not written,
+				      * interpolated depth is used?
+				      */
+#define REG_TYPE_U                 6 /* unpreserved temporaries */
+#define REG_TYPE_MASK              0x7
+#define REG_TYPE_SHIFT		   4
+#define REG_NR_MASK                0xf
+
+/* REG_TYPE_T:
+ */
+#define T_TEX0     0
+#define T_TEX1     1
+#define T_TEX2     2
+#define T_TEX3     3
+#define T_TEX4     4
+#define T_TEX5     5
+#define T_TEX6     6
+#define T_TEX7     7
+#define T_DIFFUSE  8
+#define T_SPECULAR 9
+#define T_FOG_W    10		/* interpolated fog is in W coord */
+
+/* Arithmetic instructions */
+
+/* .replicate_swizzle == selection and replication of a particular
+ * scalar channel, ie., .xxxx, .yyyy, .zzzz or .wwww
+ */
+#define A0_NOP    (0x0<<24)		/* no operation */
+#define A0_ADD    (0x1<<24)		/* dst = src0 + src1 */
+#define A0_MOV    (0x2<<24)		/* dst = src0 */
+#define A0_MUL    (0x3<<24)		/* dst = src0 * src1 */
+#define A0_MAD    (0x4<<24)		/* dst = src0 * src1 + src2 */
+#define A0_DP2ADD (0x5<<24)		/* dst.xyzw = src0.xy dot src1.xy + src2.replicate_swizzle */
+#define A0_DP3    (0x6<<24)		/* dst.xyzw = src0.xyz dot src1.xyz */
+#define A0_DP4    (0x7<<24)		/* dst.xyzw = src0.xyzw dot src1.xyzw */
+#define A0_FRC    (0x8<<24)		/* dst = src0 - floor(src0) */
+#define A0_RCP    (0x9<<24)		/* dst.xyzw = 1/(src0.replicate_swizzle) */
+#define A0_RSQ    (0xa<<24)		/* dst.xyzw = 1/(sqrt(abs(src0.replicate_swizzle))) */
+#define A0_EXP    (0xb<<24)		/* dst.xyzw = exp2(src0.replicate_swizzle) */
+#define A0_LOG    (0xc<<24)		/* dst.xyzw = log2(abs(src0.replicate_swizzle)) */
+#define A0_CMP    (0xd<<24)		/* dst = (src0 >= 0.0) ? src1 : src2 */
+#define A0_MIN    (0xe<<24)		/* dst = (src0 < src1) ? src0 : src1 */
+#define A0_MAX    (0xf<<24)		/* dst = (src0 >= src1) ? src0 : src1 */
+#define A0_FLR    (0x10<<24)		/* dst = floor(src0) */
+#define A0_MOD    (0x11<<24)		/* dst = src0 fmod 1.0 */
+#define A0_TRC    (0x12<<24)		/* dst = int(src0) */
+#define A0_SGE    (0x13<<24)		/* dst = src0 >= src1 ? 1.0 : 0.0 */
+#define A0_SLT    (0x14<<24)		/* dst = src0 < src1 ? 1.0 : 0.0 */
+#define A0_DEST_SATURATE                 (1<<22)
+#define A0_DEST_TYPE_SHIFT                19
+/* Allow: R, OC, OD, U */
+#define A0_DEST_NR_SHIFT                 14
+/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */
+#define A0_DEST_CHANNEL_X                (1<<10)
+#define A0_DEST_CHANNEL_Y                (2<<10)
+#define A0_DEST_CHANNEL_Z                (4<<10)
+#define A0_DEST_CHANNEL_W                (8<<10)
+#define A0_DEST_CHANNEL_ALL              (0xf<<10)
+#define A0_DEST_CHANNEL_SHIFT            10
+#define A0_SRC0_TYPE_SHIFT               7
+#define A0_SRC0_NR_SHIFT                 2
+
+#define A0_DEST_CHANNEL_XY              (A0_DEST_CHANNEL_X|A0_DEST_CHANNEL_Y)
+#define A0_DEST_CHANNEL_XYZ             (A0_DEST_CHANNEL_XY|A0_DEST_CHANNEL_Z)
+
+#define SRC_X        0
+#define SRC_Y        1
+#define SRC_Z        2
+#define SRC_W        3
+#define SRC_ZERO     4
+#define SRC_ONE      5
+
+#define A1_SRC0_CHANNEL_X_NEGATE         (1<<31)
+#define A1_SRC0_CHANNEL_X_SHIFT          28
+#define A1_SRC0_CHANNEL_Y_NEGATE         (1<<27)
+#define A1_SRC0_CHANNEL_Y_SHIFT          24
+#define A1_SRC0_CHANNEL_Z_NEGATE         (1<<23)
+#define A1_SRC0_CHANNEL_Z_SHIFT          20
+#define A1_SRC0_CHANNEL_W_NEGATE         (1<<19)
+#define A1_SRC0_CHANNEL_W_SHIFT          16
+#define A1_SRC1_TYPE_SHIFT               13
+#define A1_SRC1_NR_SHIFT                 8
+#define A1_SRC1_CHANNEL_X_NEGATE         (1<<7)
+#define A1_SRC1_CHANNEL_X_SHIFT          4
+#define A1_SRC1_CHANNEL_Y_NEGATE         (1<<3)
+#define A1_SRC1_CHANNEL_Y_SHIFT          0
+
+#define A2_SRC1_CHANNEL_Z_NEGATE         (1<<31)
+#define A2_SRC1_CHANNEL_Z_SHIFT          28
+#define A2_SRC1_CHANNEL_W_NEGATE         (1<<27)
+#define A2_SRC1_CHANNEL_W_SHIFT          24
+#define A2_SRC2_TYPE_SHIFT               21
+#define A2_SRC2_NR_SHIFT                 16
+#define A2_SRC2_CHANNEL_X_NEGATE         (1<<15)
+#define A2_SRC2_CHANNEL_X_SHIFT          12
+#define A2_SRC2_CHANNEL_Y_NEGATE         (1<<11)
+#define A2_SRC2_CHANNEL_Y_SHIFT          8
+#define A2_SRC2_CHANNEL_Z_NEGATE         (1<<7)
+#define A2_SRC2_CHANNEL_Z_SHIFT          4
+#define A2_SRC2_CHANNEL_W_NEGATE         (1<<3)
+#define A2_SRC2_CHANNEL_W_SHIFT          0
+
+/* Texture instructions */
+#define T0_TEXLD     (0x15<<24)	/* Sample texture using predeclared
+				 * sampler and address, and output
+				 * filtered texel data to destination
+				 * register */
+#define T0_TEXLDP    (0x16<<24)	/* Same as texld but performs a
+				 * perspective divide of the texture
+				 * coordinate .xyz values by .w before
+				 * sampling. */
+#define T0_TEXLDB    (0x17<<24)	/* Same as texld but biases the
+				 * computed LOD by w.  Only S4.6 two's
+				 * comp is used.  This implies that a
+				 * float to fixed conversion is
+				 * done. */
+#define T0_TEXKILL   (0x18<<24)	/* Does not perform a sampling
+				 * operation.  Simply kills the pixel
+				 * if any channel of the address
+				 * register is < 0.0. */
+#define T0_DEST_TYPE_SHIFT                19
+/* Allow: R, OC, OD, U */
+/* Note: U (unpreserved) regs do not retain their values between
+ * phases (cannot be used for feedback)
+ *
+ * Note: oC and OD registers can only be used as the destination of a
+ * texture instruction once per phase (this is an implementation
+ * restriction).
+ */
+#define T0_DEST_NR_SHIFT                 14
+/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */
+#define T0_SAMPLER_NR_SHIFT              0 /* This field ignored for TEXKILL */
+#define T0_SAMPLER_NR_MASK               (0xf<<0)
+
+#define T1_ADDRESS_REG_TYPE_SHIFT        24 /* Reg to use as texture coord */
+/* Allow R, T, OC, OD -- R, OC, OD are 'dependent' reads, new program phase */
+#define T1_ADDRESS_REG_NR_SHIFT          17
+#define T2_MBZ                           0
+
+/* Declaration instructions */
+#define D0_DCL       (0x19<<24)	/* Declare a t (interpolated attrib)
+				 * register or an s (sampler)
+				 * register. */
+#define D0_SAMPLE_TYPE_SHIFT              22
+#define D0_SAMPLE_TYPE_2D                 (0x0<<22)
+#define D0_SAMPLE_TYPE_CUBE               (0x1<<22)
+#define D0_SAMPLE_TYPE_VOLUME             (0x2<<22)
+#define D0_SAMPLE_TYPE_MASK               (0x3<<22)
+
+#define D0_TYPE_SHIFT                19
+/* Allow: T, S */
+#define D0_NR_SHIFT                  14
+/* Allow T: 0..10, S: 0..15 */
+#define D0_CHANNEL_X                (1<<10)
+#define D0_CHANNEL_Y                (2<<10)
+#define D0_CHANNEL_Z                (4<<10)
+#define D0_CHANNEL_W                (8<<10)
+#define D0_CHANNEL_ALL              (0xf<<10)
+#define D0_CHANNEL_NONE             (0<<10)
+
+#define D0_CHANNEL_XY               (D0_CHANNEL_X|D0_CHANNEL_Y)
+#define D0_CHANNEL_XYZ              (D0_CHANNEL_XY|D0_CHANNEL_Z)
+
+/* I915 Errata: Do not allow (xz), (xw), (xzw) combinations for diffuse
+ * or specular declarations.
+ *
+ * For T dcls, only allow: (x), (xy), (xyz), (w), (xyzw)
+ *
+ * Must be zero for S (sampler) dcls
+ */
+#define D1_MBZ                          0
+#define D2_MBZ                          0
+
+
+/* MASK_* are the unshifted bitmasks of the destination mask in arithmetic
+ * operations
+ */
+#define MASK_X			0x1
+#define MASK_Y			0x2
+#define MASK_Z			0x4
+#define MASK_W			0x8
+#define MASK_XYZ		(MASK_X | MASK_Y | MASK_Z)
+#define MASK_XYZW		(MASK_XYZ | MASK_W)
+#define MASK_SATURATE		0x10
+
+/* Temporary, undeclared regs. Preserved between phases */
+#define FS_R0			((REG_TYPE_R << REG_TYPE_SHIFT) | 0)
+#define FS_R1			((REG_TYPE_R << REG_TYPE_SHIFT) | 1)
+#define FS_R2			((REG_TYPE_R << REG_TYPE_SHIFT) | 2)
+#define FS_R3			((REG_TYPE_R << REG_TYPE_SHIFT) | 3)
+
+/* Texture coordinate regs.  Must be declared. */
+#define FS_T0			((REG_TYPE_T << REG_TYPE_SHIFT) | 0)
+#define FS_T1			((REG_TYPE_T << REG_TYPE_SHIFT) | 1)
+#define FS_T2			((REG_TYPE_T << REG_TYPE_SHIFT) | 2)
+#define FS_T3			((REG_TYPE_T << REG_TYPE_SHIFT) | 3)
+#define FS_T4			((REG_TYPE_T << REG_TYPE_SHIFT) | 4)
+#define FS_T5			((REG_TYPE_T << REG_TYPE_SHIFT) | 5)
+#define FS_T6			((REG_TYPE_T << REG_TYPE_SHIFT) | 6)
+#define FS_T7			((REG_TYPE_T << REG_TYPE_SHIFT) | 7)
+#define FS_T8			((REG_TYPE_T << REG_TYPE_SHIFT) | 8)
+#define FS_T9			((REG_TYPE_T << REG_TYPE_SHIFT) | 9)
+#define FS_T10			((REG_TYPE_T << REG_TYPE_SHIFT) | 10)
+
+/* Constant values */
+#define FS_C0			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 0)
+#define FS_C1			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 1)
+#define FS_C2			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 2)
+#define FS_C3			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 3)
+#define FS_C4			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 4)
+#define FS_C5			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 5)
+#define FS_C6			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 6)
+#define FS_C7			((REG_TYPE_CONST << REG_TYPE_SHIFT) | 7)
+
+/* Sampler regs */
+#define FS_S0			((REG_TYPE_S << REG_TYPE_SHIFT) | 0)
+#define FS_S1			((REG_TYPE_S << REG_TYPE_SHIFT) | 1)
+#define FS_S2			((REG_TYPE_S << REG_TYPE_SHIFT) | 2)
+#define FS_S3			((REG_TYPE_S << REG_TYPE_SHIFT) | 3)
+
+/* Output color */
+#define FS_OC			((REG_TYPE_OC << REG_TYPE_SHIFT) | 0)
+
+/* Output depth */
+#define FS_OD			((REG_TYPE_OD << REG_TYPE_SHIFT) | 0)
+
+/* Unpreserved temporary regs */
+#define FS_U0			((REG_TYPE_U << REG_TYPE_SHIFT) | 0)
+#define FS_U1			((REG_TYPE_U << REG_TYPE_SHIFT) | 1)
+#define FS_U2			((REG_TYPE_U << REG_TYPE_SHIFT) | 2)
+#define FS_U3			((REG_TYPE_U << REG_TYPE_SHIFT) | 3)
+
+#define X_CHANNEL_SHIFT (REG_TYPE_SHIFT + 3)
+#define Y_CHANNEL_SHIFT (X_CHANNEL_SHIFT + 4)
+#define Z_CHANNEL_SHIFT (Y_CHANNEL_SHIFT + 4)
+#define W_CHANNEL_SHIFT (Z_CHANNEL_SHIFT + 4)
+
+#define REG_CHANNEL_MASK 0xf
+
+#define REG_NR(reg)		((reg) & REG_NR_MASK)
+#define REG_TYPE(reg)		(((reg) >> REG_TYPE_SHIFT) & REG_TYPE_MASK)
+#define REG_X(reg)		(((reg) >> X_CHANNEL_SHIFT) & REG_CHANNEL_MASK)
+#define REG_Y(reg)		(((reg) >> Y_CHANNEL_SHIFT) & REG_CHANNEL_MASK)
+#define REG_Z(reg)		(((reg) >> Z_CHANNEL_SHIFT) & REG_CHANNEL_MASK)
+#define REG_W(reg)		(((reg) >> W_CHANNEL_SHIFT) & REG_CHANNEL_MASK)
+
+enum i915_fs_channel {
+    X_CHANNEL_VAL = 0,
+    Y_CHANNEL_VAL,
+    Z_CHANNEL_VAL,
+    W_CHANNEL_VAL,
+    ZERO_CHANNEL_VAL,
+    ONE_CHANNEL_VAL,
+
+    NEG_X_CHANNEL_VAL = X_CHANNEL_VAL | 0x8,
+    NEG_Y_CHANNEL_VAL = Y_CHANNEL_VAL | 0x8,
+    NEG_Z_CHANNEL_VAL = Z_CHANNEL_VAL | 0x8,
+    NEG_W_CHANNEL_VAL = W_CHANNEL_VAL | 0x8,
+    NEG_ONE_CHANNEL_VAL = ONE_CHANNEL_VAL | 0x8
+};
+
+#define i915_fs_operand(reg, x, y, z, w) \
+    (reg) | \
+    (x##_CHANNEL_VAL << X_CHANNEL_SHIFT) | \
+    (y##_CHANNEL_VAL << Y_CHANNEL_SHIFT) | \
+    (z##_CHANNEL_VAL << Z_CHANNEL_SHIFT) | \
+    (w##_CHANNEL_VAL << W_CHANNEL_SHIFT)
+
+/*
+ * Construct an operand description for using a register with no swizzling
+ */
+#define i915_fs_operand_reg(reg)					\
+    i915_fs_operand(reg, X, Y, Z, W)
+
+#define i915_fs_operand_reg_negate(reg)					\
+    i915_fs_operand(reg, NEG_X, NEG_Y, NEG_Z, NEG_W)
+
+/*
+ * Returns an operand containing (0.0, 0.0, 0.0, 0.0).
+ */
+#define i915_fs_operand_zero() i915_fs_operand(FS_R0, ZERO, ZERO, ZERO, ZERO)
+
+/*
+ * Returns an unused operand
+ */
+#define i915_fs_operand_none() i915_fs_operand_zero()
+
+/*
+ * Returns an operand containing (1.0, 1.0, 1.0, 1.0).
+ */
+#define i915_fs_operand_one() i915_fs_operand(FS_R0, ONE, ONE, ONE, ONE)
+
+#define i915_get_hardware_channel_val(val, shift, negate) \
+    (((val & 0x7) << shift) | ((val & 0x8) ? negate : 0))
+
+/*
+ * Outputs a fragment shader command to declare a sampler or texture register.
+ */
+#define i915_fs_dcl(reg)						\
+do {									\
+    OUT_DWORD (D0_DCL | \
+	       (REG_TYPE(reg) << D0_TYPE_SHIFT) | \
+	       (REG_NR(reg) << D0_NR_SHIFT) | \
+               ((REG_TYPE(reg) != REG_TYPE_S) ? D0_CHANNEL_ALL : 0)); \
+    OUT_DWORD (0); \
+    OUT_DWORD (0); \
+} while (0)
+
+#define i915_fs_texld(dest_reg, sampler_reg, address_reg)		\
+do {									\
+    OUT_DWORD (T0_TEXLD | \
+               (REG_TYPE(dest_reg) << T0_DEST_TYPE_SHIFT) | \
+               (REG_NR(dest_reg) << T0_DEST_NR_SHIFT) | \
+               (REG_NR(sampler_reg) << T0_SAMPLER_NR_SHIFT)); \
+    OUT_DWORD((REG_TYPE(address_reg) << T1_ADDRESS_REG_TYPE_SHIFT) | \
+              (REG_NR(address_reg) << T1_ADDRESS_REG_NR_SHIFT)); \
+    OUT_DWORD (0); \
+} while (0)
+
+#define i915_fs_arith_masked(op, dest_reg, dest_mask, operand0, operand1, operand2)	\
+    _i915_fs_arith_masked(A0_##op, dest_reg, dest_mask, operand0, operand1, operand2)
+
+#define i915_fs_arith(op, dest_reg, operand0, operand1, operand2)	\
+    _i915_fs_arith(A0_##op, dest_reg, operand0, operand1, operand2)
+
+#define _i915_fs_arith_masked(cmd, dest_reg, dest_mask, operand0, operand1, operand2) \
+do { \
+    /* Set up destination register and write mask */ \
+    OUT_DWORD (cmd | \
+               (REG_TYPE(dest_reg) << A0_DEST_TYPE_SHIFT) | \
+	       (REG_NR(dest_reg) << A0_DEST_NR_SHIFT) | \
+               (((dest_mask) & ~MASK_SATURATE) << A0_DEST_CHANNEL_SHIFT) | \
+               (((dest_mask) & MASK_SATURATE) ? A0_DEST_SATURATE : 0) | \
+               /* Set up operand 0 */ \
+	       (REG_TYPE(operand0) << A0_SRC0_TYPE_SHIFT) | \
+	       (REG_NR(operand0) << A0_SRC0_NR_SHIFT)); \
+    OUT_DWORD (i915_get_hardware_channel_val(REG_X(operand0), \
+					      A1_SRC0_CHANNEL_X_SHIFT, \
+					      A1_SRC0_CHANNEL_X_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Y(operand0), \
+					      A1_SRC0_CHANNEL_Y_SHIFT, \
+					      A1_SRC0_CHANNEL_Y_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Z(operand0), \
+					      A1_SRC0_CHANNEL_Z_SHIFT, \
+					      A1_SRC0_CHANNEL_Z_NEGATE) | \
+               i915_get_hardware_channel_val(REG_W(operand0), \
+					      A1_SRC0_CHANNEL_W_SHIFT, \
+					      A1_SRC0_CHANNEL_W_NEGATE) | \
+               /* Set up operand 1 */ \
+               (REG_TYPE(operand1) << A1_SRC1_TYPE_SHIFT) | \
+               (REG_NR(operand1) << A1_SRC1_NR_SHIFT) | \
+               i915_get_hardware_channel_val(REG_X(operand1), \
+					      A1_SRC1_CHANNEL_X_SHIFT, \
+					      A1_SRC1_CHANNEL_X_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Y(operand1), \
+					      A1_SRC1_CHANNEL_Y_SHIFT, \
+					      A1_SRC1_CHANNEL_Y_NEGATE)); \
+    OUT_DWORD (i915_get_hardware_channel_val(REG_Z(operand1), \
+					      A2_SRC1_CHANNEL_Z_SHIFT, \
+					      A2_SRC1_CHANNEL_Z_NEGATE) | \
+	       i915_get_hardware_channel_val(REG_W(operand1), \
+		                             A2_SRC1_CHANNEL_W_SHIFT, \
+					     A2_SRC1_CHANNEL_W_NEGATE) | \
+               /* Set up operand 2 */ \
+               (REG_TYPE(operand2) << A2_SRC2_TYPE_SHIFT) | \
+               (REG_NR(operand2) << A2_SRC2_NR_SHIFT) | \
+               i915_get_hardware_channel_val(REG_X(operand2), \
+					      A2_SRC2_CHANNEL_X_SHIFT, \
+					      A2_SRC2_CHANNEL_X_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Y(operand2), \
+					      A2_SRC2_CHANNEL_Y_SHIFT, \
+					      A2_SRC2_CHANNEL_Y_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Z(operand2), \
+					      A2_SRC2_CHANNEL_Z_SHIFT, \
+					      A2_SRC2_CHANNEL_Z_NEGATE) | \
+               i915_get_hardware_channel_val(REG_W(operand2), \
+					       A2_SRC2_CHANNEL_W_SHIFT, \
+					       A2_SRC2_CHANNEL_W_NEGATE)); \
+} while (0)
+
+#define _i915_fs_arith(cmd, dest_reg, operand0, operand1, operand2) do {\
+    /* Set up destination register and write mask */ \
+    OUT_DWORD (cmd | \
+               (REG_TYPE(dest_reg) << A0_DEST_TYPE_SHIFT) | \
+	       (REG_NR(dest_reg) << A0_DEST_NR_SHIFT) | \
+	       (A0_DEST_CHANNEL_ALL) | \
+               /* Set up operand 0 */ \
+	       (REG_TYPE(operand0) << A0_SRC0_TYPE_SHIFT) | \
+	       (REG_NR(operand0) << A0_SRC0_NR_SHIFT)); \
+    OUT_DWORD (i915_get_hardware_channel_val(REG_X(operand0), \
+					      A1_SRC0_CHANNEL_X_SHIFT, \
+					      A1_SRC0_CHANNEL_X_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Y(operand0), \
+					      A1_SRC0_CHANNEL_Y_SHIFT, \
+					      A1_SRC0_CHANNEL_Y_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Z(operand0), \
+					      A1_SRC0_CHANNEL_Z_SHIFT, \
+					      A1_SRC0_CHANNEL_Z_NEGATE) | \
+               i915_get_hardware_channel_val(REG_W(operand0), \
+					      A1_SRC0_CHANNEL_W_SHIFT, \
+					      A1_SRC0_CHANNEL_W_NEGATE) | \
+               /* Set up operand 1 */ \
+               (REG_TYPE(operand1) << A1_SRC1_TYPE_SHIFT) | \
+               (REG_NR(operand1) << A1_SRC1_NR_SHIFT) | \
+               i915_get_hardware_channel_val(REG_X(operand1), \
+					      A1_SRC1_CHANNEL_X_SHIFT, \
+					      A1_SRC1_CHANNEL_X_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Y(operand1), \
+					      A1_SRC1_CHANNEL_Y_SHIFT, \
+					      A1_SRC1_CHANNEL_Y_NEGATE)); \
+    OUT_DWORD (i915_get_hardware_channel_val(REG_Z(operand1), \
+					      A2_SRC1_CHANNEL_Z_SHIFT, \
+					      A2_SRC1_CHANNEL_Z_NEGATE) | \
+	       i915_get_hardware_channel_val(REG_W(operand1), \
+		                             A2_SRC1_CHANNEL_W_SHIFT, \
+					     A2_SRC1_CHANNEL_W_NEGATE) | \
+               /* Set up operand 2 */ \
+               (REG_TYPE(operand2) << A2_SRC2_TYPE_SHIFT) | \
+               (REG_NR(operand2) << A2_SRC2_NR_SHIFT) | \
+               i915_get_hardware_channel_val(REG_X(operand2), \
+					      A2_SRC2_CHANNEL_X_SHIFT, \
+					      A2_SRC2_CHANNEL_X_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Y(operand2), \
+					      A2_SRC2_CHANNEL_Y_SHIFT, \
+					      A2_SRC2_CHANNEL_Y_NEGATE) | \
+               i915_get_hardware_channel_val(REG_Z(operand2), \
+					      A2_SRC2_CHANNEL_Z_SHIFT, \
+					      A2_SRC2_CHANNEL_Z_NEGATE) | \
+               i915_get_hardware_channel_val(REG_W(operand2), \
+					       A2_SRC2_CHANNEL_W_SHIFT, \
+					       A2_SRC2_CHANNEL_W_NEGATE)); \
+} while (0)
+
+#define i915_fs_mov(dest_reg, operand0)					\
+    i915_fs_arith(MOV, dest_reg, \
+	          operand0,			\
+	          i915_fs_operand_none(),			\
+	          i915_fs_operand_none())
+
+#define i915_fs_mov_masked(dest_reg, dest_mask, operand0)		\
+    i915_fs_arith_masked (MOV, dest_reg, dest_mask, \
+	                  operand0, \
+	                  i915_fs_operand_none(), \
+	                  i915_fs_operand_none())
+
+
+#define i915_fs_frc(dest_reg, operand0)					\
+    i915_fs_arith (FRC, dest_reg, \
+	           operand0,			\
+	           i915_fs_operand_none(),			\
+	           i915_fs_operand_none())
+
+/* Add operand0 and operand1 and put the result in dest_reg */
+#define i915_fs_add(dest_reg, operand0, operand1)			\
+    i915_fs_arith (ADD, dest_reg, \
+	           operand0, operand1,	\
+		   i915_fs_operand_none())
+
+/* Multiply operand0 and operand1 and put the result in dest_reg */
+#define i915_fs_mul(dest_reg, operand0, operand1)			\
+    i915_fs_arith (MUL, dest_reg, \
+	           operand0, operand1,	\
+		   i915_fs_operand_none())
+
+/* Computes 1/sqrt(operand0.replicate_swizzle) puts the result in dest_reg */
+#define i915_fs_rsq(dest_reg, dest_mask, operand0)		\
+do {									\
+    if (dest_mask) {							\
+	i915_fs_arith_masked (RSQ, dest_reg, dest_mask, \
+		              operand0,			\
+			      i915_fs_operand_none (),			\
+			      i915_fs_operand_none ());			\
+    } else { \
+	i915_fs_arith (RSQ, dest_reg, \
+		       operand0, \
+		       i915_fs_operand_none (), \
+		       i915_fs_operand_none ()); \
+    } \
+} while (0)
+
+/* Puts the minimum of operand0 and operand1 in dest_reg */
+#define i915_fs_min(dest_reg, operand0, operand1)			\
+    i915_fs_arith (MIN, dest_reg, \
+	           operand0, operand1, \
+		   i915_fs_operand_none())
+
+/* Puts the maximum of operand0 and operand1 in dest_reg */
+#define i915_fs_max(dest_reg, operand0, operand1)			\
+    i915_fs_arith (MAX, dest_reg, \
+	           operand0, operand1, \
+	           i915_fs_operand_none())
+
+#define i915_fs_cmp(dest_reg, operand0, operand1, operand2)		\
+    i915_fs_arith (CMP, dest_reg, operand0, operand1, operand2)
+
+/* Perform operand0 * operand1 + operand2 and put the result in dest_reg */
+#define i915_fs_mad(dest_reg, dest_mask, op0, op1, op2)	\
+do {									\
+    if (dest_mask) {							\
+	i915_fs_arith_masked (MAD, dest_reg, dest_mask, op0, op1, op2); \
+    } else { \
+	i915_fs_arith (MAD, dest_reg, op0, op1, op2); \
+    } \
+} while (0)
+
+#define i915_fs_dp2add(dest_reg, dest_mask, op0, op1, op2)	\
+do {									\
+    if (dest_mask) {							\
+	i915_fs_arith_masked (DP2ADD, dest_reg, dest_mask, op0, op1, op2); \
+    } else { \
+	i915_fs_arith (DP2ADD, dest_reg, op0, op1, op2); \
+    } \
+} while (0)
+
+/*
+ * Perform a 3-component dot-product of operand0 and operand1 and put the
+ * resulting scalar in the channels of dest_reg specified by the dest_mask.
+ */
+#define i915_fs_dp3(dest_reg, dest_mask, op0, op1)	\
+do {									\
+    if (dest_mask) {							\
+	i915_fs_arith_masked (DP3, dest_reg, dest_mask, \
+		              op0, op1,\
+		              i915_fs_operand_none());			\
+    } else { \
+	i915_fs_arith (DP3, dest_reg, op0, op1,\
+		       i915_fs_operand_none());			\
+    } \
+} while (0)
+
+static inline uint32_t cairo_const
+i915_fs_operand_pure_alpha (int pure)
+{
+    if (pure & (1 << 3))
+	return i915_fs_operand_one ();
+    else
+	return i915_fs_operand_zero ();
+}
+
+#define I915_TILING_DEFAULT I915_TILING_Y
+#define I915_BO_CACHE_BUCKETS 13 /* cache surfaces up to 16 MiB */
+
+typedef struct i915_surface i915_surface_t;
+typedef struct i915_device i915_device_t;
+typedef struct i915_shader i915_shader_t;
+
+typedef void (*i915_add_rectangle_func_t) (const i915_shader_t *shader,
+					   int x, int y,
+					   int w, int h);
+
+#define IMAGE_CACHE_WIDTH 1024
+#define IMAGE_CACHE_HEIGHT 1024
+
+typedef struct i915_image_private {
+    cairo_rtree_node_t node;
+    intel_buffer_cache_t *container;
+} i915_image_private_t;
+
+#define I915_BATCH_SIZE (128*1024)
+#define I915_VBO_SIZE (512*1024)
+#define I915_MAX_RELOCS 2048
+
+enum {
+    I915_DEBUG_EXEC = 0x1,
+    I915_DEBUG_SYNC = 0x2,
+    I915_DEBUG_BATCH = 0x4,
+    I915_DEBUG_BUFFER = 0x8,
+    I915_DEBUG_BUFFER_CACHE = 0x10,
+    I915_DEBUG_BUFFER_ALLOC = 0x20,
+    I915_DEBUG_GLYPHS = 0x40,
+    I915_DEBUG_MAP = 0x80,
+    I915_DEBUG_THROTTLE = 0x100,
+};
+
+struct i915_device {
+    intel_device_t intel;
+
+    cairo_bool_t debug;
+
+    i915_shader_t *shader; /* note: only valid during geometry emission */
+
+    struct i915_batch {
+	intel_bo_t *target_bo[I915_MAX_RELOCS];
+	size_t gtt_avail_size;
+	size_t est_gtt_size;
+	size_t total_gtt_size;
+
+	uint16_t fences;
+	uint16_t fences_avail;
+	uint16_t reloc_count;
+	uint16_t exec_count;
+	uint16_t used;
+
+	struct drm_i915_gem_exec_object2 exec[I915_MAX_RELOCS];
+	struct drm_i915_gem_relocation_entry reloc[I915_MAX_RELOCS];
+    } batch;
+
+    uint32_t vbo;
+    uint32_t vbo_offset;
+    uint32_t vbo_used;
+    uint32_t vbo_max_index;
+    uint32_t vertex_index;
+    uint32_t vertex_count;
+    uint32_t floats_per_vertex;
+    uint32_t rectangle_size;
+    intel_bo_t *last_vbo;
+    uint32_t last_vbo_offset;
+    uint32_t last_vbo_space;
+
+    i915_surface_t *current_target;
+    uint32_t current_size;
+    uint32_t current_diffuse;
+    uint32_t current_colorbuf;
+    uint32_t *current_source;
+    uint32_t *current_mask;
+    uint32_t *current_clip;
+    uint32_t current_program;
+    uint32_t current_texcoords;
+    uint32_t current_blend;
+    uint32_t current_constants[8*4];
+    uint32_t current_n_constants;
+    uint32_t current_samplers[2*4];
+    uint32_t current_maps[4*4];
+    uint32_t current_n_samplers;
+    uint32_t current_n_maps;
+    uint32_t last_source_fragment;
+    uint32_t clear_alpha;
+
+    cairo_list_t image_caches[2];
+
+    uint32_t batch_header[13];
+    uint32_t batch_base[I915_BATCH_SIZE / sizeof (uint32_t)];
+    uint8_t vbo_base[I915_VBO_SIZE];
+};
+
+enum {
+    CURRENT_SOURCE = 0x1,
+    CURRENT_MASK = 0x2,
+    CURRENT_CLIP = 0x4
+};
+
+typedef enum {
+    VS_ZERO,
+    VS_CONSTANT,
+    VS_LINEAR,
+    VS_TEXTURE,
+    VS_TEXTURE_16,
+} i915_vertex_shader_t;
+
+typedef enum {
+    FS_ZERO,
+    FS_ONE,
+    FS_PURE,
+    FS_CONSTANT,
+    FS_DIFFUSE,
+    FS_LINEAR,
+    FS_RADIAL,
+    FS_TEXTURE,
+    FS_YUV,
+    FS_SPANS,
+} i915_fragment_shader_t;
+
+#define FS_DETAILS_SHIFT 4
+
+typedef enum {
+    PATTERN_BASE,
+    PATTERN_CONSTANT,
+    PATTERN_LINEAR,
+    PATTERN_RADIAL,
+    PATTERN_TEXTURE,
+} i915_shader_channel_t;
+
+struct i915_surface {
+    intel_surface_t intel;
+
+    uint32_t map0, map1;
+    uint32_t colorbuf;
+
+    cairo_bool_t deferred_clear;
+    uint32_t offset;
+    uint32_t is_current_texture;
+
+    i915_image_private_t *cache;
+
+    intel_bo_t *stencil;
+    uint32_t stencil_stride;
+    uint32_t stencil_offset;
+};
+
+typedef enum {
+    NONE = 0,
+    YUV_I420,
+    /* XXX */
+    YUV_YV12,
+    YUV_YUY2,
+    YUV_UYVY,
+} i915_packed_pixel_t;
+
+/* read-only container */
+#define I915_PACKED_PIXEL_SURFACE_TYPE 0x1000
+typedef struct i915_packed_pixel_surface {
+    cairo_surface_t base;
+
+    i915_packed_pixel_t pixel;
+
+    i915_device_t *device;
+    intel_bo_t *bo;
+    uint32_t is_current_texture;
+
+    uint32_t offset[4];
+    uint32_t stride[4];
+    uint32_t width[4];
+    uint32_t height[4];
+    uint32_t map0[4], map1[4];
+} i915_packed_pixel_surface_t;
+
+struct i915_shader {
+    i915_device_t *device;
+    i915_surface_t *target;
+
+    cairo_operator_t op;
+    uint32_t blend;
+    float opacity;
+    cairo_content_t content;
+
+    cairo_bool_t committed;
+    cairo_bool_t need_combine;
+
+    i915_add_rectangle_func_t add_rectangle;
+
+    union i915_shader_channel {
+	struct {
+	    i915_vertex_shader_t vertex;
+	    i915_fragment_shader_t fragment;
+	    i915_shader_channel_t pattern;
+	} type;
+	struct i915_shader_base {
+	    i915_vertex_shader_t vertex;
+	    i915_fragment_shader_t fragment;
+	    i915_shader_channel_t pattern;
+	    uint32_t texfmt;
+	    cairo_content_t content;
+	    uint32_t mode;
+	    intel_bo_t *bo;
+	    uint32_t n_samplers;
+	    uint32_t offset[4];
+	    uint32_t map[2*4];
+	    uint32_t sampler[2];
+	    cairo_matrix_t matrix;
+	} base;
+	struct i915_shader_solid {
+	    struct i915_shader_base base;
+	    cairo_color_t color;
+	    int pure;
+	} solid;
+	struct i915_shader_linear {
+	    struct i915_shader_base base;
+	    struct {
+		float red, green, blue, alpha;
+	    } color0, color1;
+	    float dx, dy, offset;
+	} linear;
+	struct i915_shader_radial {
+	    struct i915_shader_base base;
+	    float constants[8];
+	} radial;
+	struct i915_shader_surface {
+	    struct i915_shader_base base;
+	    i915_packed_pixel_t pixel;
+	} surface;
+    } source, mask, clip, dst;
+
+    jmp_buf unwind;
+};
+
+enum i915_shader_linear_mode {
+    /* XXX REFLECT */
+    LINEAR_TEXTURE,
+    LINEAR_NONE,
+    LINEAR_REPEAT,
+    LINEAR_PAD,
+};
+
+enum i915_shader_radial_mode {
+    RADIAL_ONE,
+    RADIAL_TWO
+};
+
+typedef cairo_status_t
+(*i915_spans_func_t) (void			*closure,
+		      cairo_span_renderer_t	*renderer,
+		      const cairo_rectangle_int_t	*extents);
+
+cairo_private cairo_status_t
+i915_clip_and_composite_spans (i915_surface_t		*dst,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*pattern,
+			       cairo_antialias_t	 antialias,
+			       i915_spans_func_t	 draw_func,
+			       void			*draw_closure,
+			       const cairo_composite_rectangles_t*extents,
+			       cairo_clip_t		*clip,
+			       double			 opacity);
+
+cairo_private cairo_surface_t *
+i915_surface_create_internal (cairo_drm_device_t *base_dev,
+		              cairo_format_t format,
+			      int width, int height,
+			      uint32_t tiling,
+			      cairo_bool_t gpu_target);
+
+cairo_private i915_surface_t *
+i915_surface_create_from_cacheable_image_internal (i915_device_t *device,
+						   cairo_image_surface_t *image);
+
+cairo_private void
+i915_surface_scaled_font_fini (cairo_scaled_font_t *scaled_font);
+
+cairo_private cairo_int_status_t
+i915_surface_glyphs (void			*abstract_surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_glyph_t		*glyphs,
+		     int			 num_glyphs,
+		     cairo_scaled_font_t	*scaled_font,
+		     cairo_clip_t		*clip,
+		     int *num_remaining);
+
+static inline int cairo_const
+i915_tiling_height (uint32_t tiling, int height)
+{
+    switch (tiling) {
+    default:
+    case I915_TILING_NONE: return (height + 1) & -2;
+    case I915_TILING_X: return (height + 7) & -8;
+    case I915_TILING_Y: return (height + 31) & -32;
+    }
+}
+
+static inline uint32_t cairo_const
+i915_tiling_stride (int format, uint32_t stride)
+{
+    uint32_t tile_width;
+
+    /* use 64B alignment so that the buffer may be used as a scanout */
+    if (format == I915_TILING_NONE)
+	return (stride + 63) & -64;
+
+    tile_width = 512;
+    /* XXX Currently the kernel enforces a tile_width of 512 for TILING_Y.
+
+       <jbarnes> the docs are a bit confused on that front
+       <jbarnes> once we enable it on 915 we'll find out what the tile width size should be in the fence setup
+       <jbarnes> it could be that 915 has y tiling but that the minimum width is 512 or something
+       <jbarnes> yeah it's probably 128 on 915 also
+       <jbarnes> it's just that we haven't tested
+       <jbarnes> but I wasn't thinking that the tile widths were the same
+       <jbarnes> only that in order to fence y tiles on 915 you needed pitch to be a multiple of 4 y tiles (or something like that)
+
+       tile_width = format == I915_TILING_Y ? 128 : 512;
+    */
+
+    /* needs a pot tile width */
+    while (tile_width < stride)
+	tile_width <<= 1;
+
+    return tile_width;
+}
+
+static inline uint32_t cairo_const
+i915_tiling_size (uint32_t tiling, uint32_t size)
+{
+    uint32_t fence;
+
+    if (tiling == I915_TILING_NONE)
+	return (size + 4095) & -4096;
+
+    fence = 1024 * 1024; /* 1 MiB */
+    while (fence < size)
+	fence <<= 1;
+
+    return fence;
+}
+
+static inline cairo_bool_t cairo_const
+i915_texture_filter_is_nearest (cairo_filter_t filter)
+{
+    switch (filter) {
+    case CAIRO_FILTER_BEST:
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BILINEAR:
+    case CAIRO_FILTER_GAUSSIAN:
+	return FALSE;
+    default:
+    case CAIRO_FILTER_FAST:
+    case CAIRO_FILTER_NEAREST:
+	return TRUE;
+    }
+}
+
+static inline uint32_t cairo_const
+i915_texture_filter (cairo_filter_t filter)
+{
+    switch (filter) {
+    case CAIRO_FILTER_BEST:
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BILINEAR:
+    case CAIRO_FILTER_GAUSSIAN:
+        return
+	    (FILTER_LINEAR << SS2_MAG_FILTER_SHIFT) |
+	    (FILTER_LINEAR << SS2_MIN_FILTER_SHIFT);
+    default:
+    case CAIRO_FILTER_FAST:
+    case CAIRO_FILTER_NEAREST:
+	return
+	    (FILTER_NEAREST << SS2_MAG_FILTER_SHIFT) |
+	    (FILTER_NEAREST << SS2_MIN_FILTER_SHIFT);
+    }
+}
+
+static inline uint32_t cairo_const
+i915_texture_extend (cairo_extend_t extend)
+{
+    switch (extend) {
+    default:
+    case CAIRO_EXTEND_NONE:
+	return
+	    (TEXCOORDMODE_CLAMP_BORDER << SS3_TCX_ADDR_MODE_SHIFT) |
+	    (TEXCOORDMODE_CLAMP_BORDER << SS3_TCY_ADDR_MODE_SHIFT);
+    case CAIRO_EXTEND_REPEAT:
+	return
+	    (TEXCOORDMODE_WRAP << SS3_TCX_ADDR_MODE_SHIFT) |
+	    (TEXCOORDMODE_WRAP << SS3_TCY_ADDR_MODE_SHIFT);
+    case CAIRO_EXTEND_PAD:
+	return
+	    (TEXCOORDMODE_CLAMP_EDGE << SS3_TCX_ADDR_MODE_SHIFT) |
+	    (TEXCOORDMODE_CLAMP_EDGE << SS3_TCY_ADDR_MODE_SHIFT);
+    case CAIRO_EXTEND_REFLECT:
+	return
+	    (TEXCOORDMODE_MIRROR << SS3_TCX_ADDR_MODE_SHIFT) |
+	    (TEXCOORDMODE_MIRROR << SS3_TCY_ADDR_MODE_SHIFT);
+    }
+}
+
+static inline uint32_t cairo_const
+BUF_tiling (uint32_t tiling)
+{
+    switch (tiling) {
+    default:
+    case I915_TILING_NONE: return 0;
+    case I915_TILING_X: return BUF_3D_TILED_SURFACE | BUF_3D_TILE_WALK_X;
+    case I915_TILING_Y: return BUF_3D_TILED_SURFACE | BUF_3D_TILE_WALK_Y;
+    }
+}
+
+#define OUT_DWORD(dword) i915_batch_emit_dword (device, dword)
+#define OUT_RELOC(surface, read, write) i915_batch_emit_reloc (device, to_intel_bo (surface->intel.drm.bo), surface->offset, read, write, FALSE)
+#define OUT_RELOC_FENCED(surface, read, write) i915_batch_emit_reloc (device, to_intel_bo (surface->intel.drm.bo), surface->offset, read, write, TRUE)
+
+#define FS_LOCALS							\
+    uint32_t *_shader_start
+
+#define FS_BEGIN()							\
+do {									\
+    _shader_start = BATCH_PTR (device);					\
+    OUT_DWORD (_3DSTATE_PIXEL_SHADER_PROGRAM);				\
+} while (0)
+
+#define FS_END()							\
+do {									\
+    *_shader_start |= BATCH_PTR (device) - _shader_start - 2;		\
+} while (0);
+
+static inline int32_t
+i915_batch_space (i915_device_t *device)
+{
+    /* leave room for RECTLIST(4) + MI_BUFFER_END + MI_NOOP */
+    return sizeof (device->batch_base) - (device->batch.used << 2) - 32;
+}
+
+static inline cairo_bool_t
+i915_check_aperture_size (const i915_device_t *device, int relocs, size_t est_size, size_t size)
+{
+    return device->batch.reloc_count + relocs < I915_MAX_RELOCS - 2 &&
+	   device->batch.est_gtt_size + est_size <= device->batch.gtt_avail_size &&
+	   device->batch.total_gtt_size + size <= device->intel.gtt_avail_size;
+}
+
+static inline cairo_bool_t
+i915_check_aperture (const i915_device_t *device, intel_bo_t **bo_array, int count)
+{
+    uint32_t relocs = 0, est_size = 0, size = 0;
+
+    while (count--) {
+	const intel_bo_t *bo = *bo_array++;
+	if (bo->exec == NULL) {
+	    relocs++;
+	    size += bo->base.size;
+	    if (!bo->busy)
+		est_size += bo->base.size;
+	}
+    }
+
+    return i915_check_aperture_size (device, relocs, est_size, size);
+}
+
+static inline cairo_bool_t
+i915_check_aperture_and_fences (const i915_device_t *device, intel_bo_t **bo_array, int count)
+{
+    uint32_t relocs = 0, est_size = 0, size = 0;
+    uint32_t fences = 0;
+
+    while (count--) {
+	const intel_bo_t *bo = *bo_array++;
+	if (bo->exec == NULL) {
+	    relocs++;
+	    size += bo->base.size;
+	    if (!bo->busy)
+		est_size += bo->base.size;
+	    if (bo->tiling != I915_TILING_NONE)
+		fences++;
+	} else if (bo->tiling != I915_TILING_NONE) {
+	    if ((bo->exec->flags & EXEC_OBJECT_NEEDS_FENCE) == 0)
+		fences++;
+	}
+    }
+
+    return i915_check_aperture_size (device, relocs, est_size, size) &&
+	   device->batch.fences + fences <= device->batch.fences_avail;
+}
+
+#define BATCH_PTR(device) &(device)->batch_base[(device)->batch.used]
+static inline void
+i915_batch_emit_dword (i915_device_t *device, uint32_t dword)
+{
+    device->batch_base[device->batch.used++] = dword;
+}
+
+cairo_private void
+i915_batch_add_reloc (i915_device_t *device, uint32_t pos,
+		      intel_bo_t *bo,
+		      uint32_t offset,
+		      uint32_t read_domains,
+		      uint32_t write_domain,
+		      cairo_bool_t needs_fence);
+
+static inline void
+i915_batch_fill_reloc (i915_device_t *device, uint32_t pos,
+		       intel_bo_t *bo,
+		       uint32_t offset,
+		       uint32_t read_domains,
+		       uint32_t write_domain)
+{
+    i915_batch_add_reloc (device, pos,
+	                  bo, offset,
+			  read_domains, write_domain,
+			  FALSE);
+    device->batch_base[pos] = bo->offset + offset;
+}
+
+static inline void
+i915_batch_emit_reloc (i915_device_t *device,
+		       intel_bo_t *bo,
+		       uint32_t offset,
+		       uint32_t read_domains,
+		       uint32_t write_domain,
+		       cairo_bool_t needs_fence)
+{
+    i915_batch_add_reloc (device, device->batch.used,
+	                  bo, offset,
+			  read_domains, write_domain,
+			  needs_fence);
+    i915_batch_emit_dword (device, bo->offset + offset);
+}
+
+cairo_private void
+i915_vbo_flush (i915_device_t *device);
+
+cairo_private void
+i915_vbo_finish (i915_device_t *device);
+
+cairo_private  cairo_status_t
+i915_batch_flush (i915_device_t *device);
+
+static inline float *
+i915_add_rectangle (i915_device_t *device)
+{
+    float *vertices;
+    uint32_t size;
+
+    assert (device->floats_per_vertex);
+    assert (device->rectangle_size == 3*device->floats_per_vertex*sizeof(float));
+
+    size = device->rectangle_size;
+    if (unlikely (device->vbo_offset + size > I915_VBO_SIZE))
+	i915_vbo_finish (device);
+
+    vertices = (float *) (device->vbo_base + device->vbo_offset);
+    device->vbo_used = device->vbo_offset += size;
+    device->vertex_count += 3;
+    return vertices;
+}
+
+static inline i915_device_t *
+i915_device (i915_surface_t *surface)
+{
+    return (i915_device_t *) surface->intel.drm.base.device;
+}
+
+cairo_private cairo_status_t
+i915_surface_clear (i915_surface_t *dst);
+
+cairo_private void
+i915_set_dst (i915_device_t *device, i915_surface_t *dst);
+
+cairo_private void
+i915_shader_init (i915_shader_t *shader,
+		  i915_surface_t *dst,
+		  cairo_operator_t op,
+		  double opacity);
+
+cairo_private cairo_status_t
+i915_shader_acquire_pattern (i915_shader_t *shader,
+			     union i915_shader_channel *src,
+			     const cairo_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents);
+
+cairo_private void
+i915_shader_set_clip (i915_shader_t *shader,
+		      cairo_clip_t *clip);
+
+cairo_private int
+i915_shader_num_texcoords (const i915_shader_t *shader);
+
+static inline double cairo_const
+i915_shader_linear_texcoord (const struct i915_shader_linear *l,
+			     double src_x, double src_y)
+{
+    return l->dx * src_x + l->dy * src_y + l->offset;
+}
+
+cairo_private cairo_status_t
+i915_shader_commit (i915_shader_t *shader,
+		    i915_device_t *device);
+
+cairo_private void
+i915_shader_fini (i915_shader_t *shader);
+
+cairo_private cairo_status_t
+i915_fixup_unbounded (i915_surface_t *dst,
+		      const cairo_composite_rectangles_t *extents,
+		      cairo_clip_t *clip);
+
+static inline cairo_bool_t
+i915_surface_needs_tiling (i915_surface_t *dst)
+{
+    return dst->intel.drm.width > 2048 || dst->intel.drm.height > 2048;
+}
+
+cairo_private cairo_status_t
+i915_surface_copy_subimage (i915_device_t *device,
+			    i915_surface_t *src,
+			    const cairo_rectangle_int_t *extents,
+			    cairo_bool_t flush,
+			    i915_surface_t **clone_out);
+
+static inline uint32_t
+pack_float (float f)
+{
+    union {
+	float f;
+	uint32_t ui;
+    } t;
+    t.f = f;
+    return t.ui;
+}
+
+static inline cairo_status_t
+i915_surface_fallback_flush (i915_surface_t *surface)
+{
+    cairo_status_t status;
+
+    if (unlikely (surface->intel.drm.fallback != NULL))
+	return intel_surface_flush (&surface->intel, 0);
+
+    status = CAIRO_STATUS_SUCCESS;
+    if (unlikely (surface->deferred_clear))
+	status = i915_surface_clear (surface);
+
+    return status;
+}
+
+#endif /* CAIRO_DRM_I915_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i915-shader.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-shader.c
new file mode 100644
index 0000000..045ca52
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-shader.c
@@ -0,0 +1,2859 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-drm-i915-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-surface-snapshot-private.h"
+#include "cairo-image-surface-private.h"
+
+#if 0
+static cairo_status_t
+i915_packed_pixel_surface_finish (void *abstract_surface)
+{
+    i915_packed_pixel_surface_t *surface = abstract_surface;
+    i915_device_t *device;
+
+    device = i915_device_acquire (&surface->device->intel.base);
+
+    intel_bo_destroy (&device->intel, surface->bo);
+
+    if (surface->is_current_texture) {
+	if (surface->is_current_texture & CURRENT_SOURCE)
+	    device->current_source = NULL;
+	if (surface->is_current_texture & CURRENT_MASK)
+	    device->current_mask = NULL;
+	device->current_n_samplers = 0;
+    }
+
+    i915_device_release (device);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t i915_packed_pixel_surface_backend = {
+    I915_PACKED_PIXEL_SURFACE_TYPE,
+    i915_packed_pixel_surface_finish,
+};
+
+static cairo_surface_t *
+i915_packed_pixel_surface_create (i915_device_t *device,
+				   i915_packed_pixel_t pixel,
+				   const uint8_t *data,
+				   uint32_t length,
+				   uint32_t width, uint32_t height)
+{
+    i915_packed_pixel_surface_t *surface;
+    cairo_content_t content;
+    uint32_t tiling, size;
+    uint32_t stride, half_stride;
+    uint32_t i;
+
+    if (width > 2048 || height > 2048)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+
+    surface = _cairo_malloc (sizeof (i915_packed_pixel_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    tiling = I915_TILING_NONE; /* XXX */
+    half_stride = stride = i915_tiling_stride (tiling, width/2);
+    if (stride < width)
+	stride *= 2 ;
+    height = i915_tiling_height (tiling, height);
+
+    switch (surface->pixel = pixel) {
+    case YUV_I420:
+	content = CAIRO_CONTENT_COLOR;
+
+	surface->offset[0] = 0;
+	surface->width[0] = width;
+	surface->height[0] = height;
+	surface->stride[0] = stride;
+	surface->map0[0] = MAPSURF_8BIT | MT_8BIT_I8 | MS3_tiling (tiling);
+	surface->map0[0] |= ((height - 1) << MS3_HEIGHT_SHIFT) |
+			    ((width - 1)  << MS3_WIDTH_SHIFT);
+	surface->map1[0] = (stride / 4 - 1) << MS4_PITCH_SHIFT;
+
+	surface->offset[1] = stride * height;
+	surface->width[1] = width / 2;
+	surface->height[1] = height / 2;
+	surface->stride[1] = half_stride;
+	surface->map0[1] = MAPSURF_8BIT | MT_8BIT_I8 | MS3_tiling (tiling);
+	surface->map0[1] |= ((height/2 - 1) << MS3_HEIGHT_SHIFT) |
+			    ((width/2 - 1)  << MS3_WIDTH_SHIFT);
+	surface->map1[1] = (half_stride / 4 - 1) << MS4_PITCH_SHIFT;
+
+	if (width < half_stride) {
+	    surface->offset[2] = stride * height + half_stride / 2;
+	    size = stride * height + half_stride * height / 2;
+	} else {
+	    surface->offset[2] = stride * height + half_stride * height / 2;
+	    size = stride * height + half_stride * height;
+	}
+	surface->width[2] = width / 2;
+	surface->height[2] = height / 2;
+	surface->stride[2] = half_stride;
+	surface->map0[2] = MAPSURF_8BIT | MT_8BIT_I8 | MS3_tiling (tiling);
+	surface->map0[2] |= ((height/2 - 1) << MS3_HEIGHT_SHIFT) |
+			    ((width/2 - 1)  << MS3_WIDTH_SHIFT);
+	surface->map1[2] = (half_stride / 4 - 1) << MS4_PITCH_SHIFT;
+	break;
+
+    case NONE:
+    case YUV_YV12:
+    case YUV_YUY2:
+    case YUV_UYVY:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+
+    _cairo_surface_init (&surface->base,
+	                 &i915_packed_pixel_surface_backend,
+			 content);
+
+    surface->bo = intel_bo_create (&device->intel, size, FALSE);
+    assert (surface->bo->tiling == I915_TILING_NONE);
+    if (unlikely (surface->bo == NULL)) {
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    if (tiling == I915_TILING_NONE) {
+	intel_bo_t *bo = surface->bo;
+	uint32_t dst;
+	int uv;
+
+	dst = surface->offset[0];
+	if (width == stride) {
+	    size = stride * height;
+	    intel_bo_write (&device->intel, bo, dst, size, data);
+	    data += size;
+	} else {
+	    for (i = 0; i < height; i++) {
+		intel_bo_write (&device->intel, bo, dst, width, data);
+		dst += stride;
+		data += width;
+	    }
+	}
+
+	for (uv = 1; uv <= 2; uv++) {
+	    dst = surface->offset[uv];
+	    if (width / 2 == half_stride) {
+		size = half_stride * height / 2;
+		intel_bo_write (&device->intel, bo, dst, size, data);
+		data += size;
+	    } else {
+		size = width / 2;
+		for (i = 0; i < height / 2; i++) {
+		    intel_bo_write (&device->intel, bo, dst, size, data);
+		    dst += half_stride;
+		    data += size;
+		}
+	    }
+	}
+    } else {
+	uint8_t *dst, *base;
+
+	base = intel_bo_map (&device->intel, surface->bo);
+
+	dst = base + surface->offset[0];
+	if (width == stride) {
+	    size = stride * height;
+	    memcpy (dst, data, size);
+	    data += size;
+	} else {
+	    for (i = 0; i < height; i++) {
+		memcpy (dst, data, width);
+		dst += stride;
+		data += width;
+	    }
+	}
+
+	dst = base + surface->offset[1];
+	if (width / 2 == half_stride) {
+	    size = half_stride * height / 2;
+	    memcpy (dst, data, size);
+	    data += size;
+	} else {
+	    size = width / 2;
+	    for (i = 0; i < height / 2; i++) {
+		memcpy (dst, data, size);
+		dst += half_stride;
+		data += size;
+	    }
+	}
+
+	dst = base + surface->offset[2];
+	if (width / 2 == half_stride) {
+	    size = half_stride * height / 2;
+	    memcpy (dst, data, size);
+	    data += size;
+	} else {
+	    size = width / 2;
+	    for (i = 0; i < height / 2; i++) {
+		memcpy (dst, data, size);
+		dst += half_stride;
+		data += size;
+	    }
+	}
+    }
+
+    surface->device = device;
+    surface->is_current_texture = 0;
+
+    return &surface->base;
+}
+
+static cairo_int_status_t
+i915_clone_yuv (i915_surface_t *surface,
+		 cairo_surface_t *source,
+		 int width, int height,
+		 cairo_surface_t **clone_out)
+{
+    const uint8_t *mime_data = NULL;
+    unsigned int mime_data_length;
+    cairo_surface_t *clone;
+
+    cairo_surface_get_mime_data (source, "video/x-raw-yuv/i420",
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    clone =
+	i915_packed_pixel_surface_create ((i915_device_t *) surface->base.device,
+					   YUV_I420,
+					   mime_data, mime_data_length,
+					   width, height);
+    if (clone == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    if (unlikely (clone->status))
+	return clone->status;
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+#endif
+
+/* Max instruction count: 4 */
+static void
+i915_shader_linear_color (i915_device_t *device,
+			  enum i915_shader_linear_mode mode,
+			  int in, int c0, int c1, int out)
+{
+    int tmp = FS_U0;
+
+    switch (mode) {
+    case LINEAR_TEXTURE:
+	ASSERT_NOT_REACHED;
+    case LINEAR_NONE:
+	tmp = in;
+	break;
+
+    case LINEAR_REPEAT:
+	i915_fs_frc (tmp, i915_fs_operand (in, X, X, X, X));
+	break;
+#if 0
+    case LINEAR_REFLECT:
+	/* XXX needs an extra constant: C2 [0.5, 2.0, x, x] */
+	i915_fs_mul (tmp, in, 0.5);
+	i915_fs_frc (tmp, i915_fs_operand_reg (tmp));
+	i915_fs_mul (tmp, tmp, 2.0);
+	i915_fs_add (tmp, i915_fs_operand_one (),
+		     i915_fs_operand_reg_negate (tmp));
+	i915_fs_cmp (tmp,
+		     i915_fs_operand_reg (tmp),
+		     i915_fs_operand_reg (tmp),
+		     i915_fs_operand_reg_negate (tmp));
+	i915_fs_add (tmp, i915_fs_operand_one (),
+		     i915_fs_operand_reg_negate (tmp));
+#endif
+    case LINEAR_PAD:
+	i915_fs_max (tmp,
+		     i915_fs_operand_zero (),
+		     i915_fs_operand (in, X, X, X, X));
+	i915_fs_min (tmp,
+		     i915_fs_operand_one (),
+		     i915_fs_operand_reg (tmp));
+	break;
+    }
+
+    /* interpolate */
+    i915_fs_mad (out, 0,
+		 i915_fs_operand (tmp, NEG_X, NEG_X, NEG_X, NEG_X),
+		 i915_fs_operand_reg (c0),
+		 i915_fs_operand_reg (c0));
+    i915_fs_mad (out, 0,
+		 i915_fs_operand (tmp, X, X, X, X),
+		 i915_fs_operand_reg (c1),
+		 i915_fs_operand_reg (out));
+}
+
+static void
+i915_shader_radial_init (struct i915_shader_radial *r,
+			 const cairo_radial_pattern_t *radial)
+{
+    double dx, dy, dr, r1;
+
+    dx = radial->cd2.center.x - radial->cd1.center.x;
+    dy = radial->cd2.center.y - radial->cd1.center.y;
+    dr = radial->cd2.radius   - radial->cd1.radius;
+
+    r1 = radial->cd1.radius;
+
+    if (radial->cd2.center.x == radial->cd1.center.x &&
+	radial->cd2.center.y == radial->cd1.center.y)
+    {
+	/* XXX dr == 0, meaningless with anything other than PAD */
+	r->constants[0] = radial->cd1.center.x / dr;
+	r->constants[1] = radial->cd1.center.y / dr;
+	r->constants[2] = 1. / dr;
+	r->constants[3] = -r1 / dr;
+
+	r->constants[4] = 0;
+	r->constants[5] = 0;
+	r->constants[6] = 0;
+	r->constants[7] = 0;
+
+	r->base.mode = RADIAL_ONE;
+    } else {
+	r->constants[0] = -radial->cd1.center.x;
+	r->constants[1] = -radial->cd1.center.y;
+	r->constants[2] = r1;
+	r->constants[3] = -4 * (dx*dx + dy*dy - dr*dr);
+
+	r->constants[4] = -2 * dx;
+	r->constants[5] = -2 * dy;
+	r->constants[6] = -2 * r1 * dr;
+	r->constants[7] = 1 / (2 * (dx*dx + dy*dy - dr*dr));
+
+	r->base.mode = RADIAL_TWO;
+    }
+
+    r->base.matrix = radial->base.base.matrix;
+}
+
+/* Max instruction count: 10 */
+static void
+i915_shader_radial_coord (i915_device_t *device,
+			  enum i915_shader_radial_mode mode,
+			  int in, int g0, int g1, int out)
+{
+    switch (mode) {
+    case RADIAL_ONE:
+	/*
+	   pdx = (x - c1x) / dr, pdy = (y - c1y) / dr;
+	   r² = pdx*pdx + pdy*pdy
+	   t = r²/sqrt(r²) - r1/dr;
+	   */
+	i915_fs_mad (FS_U0, MASK_X | MASK_Y,
+		     i915_fs_operand (in, X, Y, ZERO, ZERO),
+		     i915_fs_operand (g0, Z, Z, ZERO, ZERO),
+		     i915_fs_operand (g0, NEG_X, NEG_Y, ZERO, ZERO));
+	i915_fs_dp2add (FS_U0, MASK_X,
+			i915_fs_operand (FS_U0, X, Y, ZERO, ZERO),
+			i915_fs_operand (FS_U0, X, Y, ZERO, ZERO),
+			i915_fs_operand_zero ());
+	i915_fs_rsq (out, MASK_X, i915_fs_operand (FS_U0, X, X, X, X));
+	i915_fs_mad (out, MASK_X,
+		     i915_fs_operand (FS_U0, X, ZERO, ZERO, ZERO),
+		     i915_fs_operand (out, X, ZERO, ZERO, ZERO),
+		     i915_fs_operand (g0, W, ZERO, ZERO, ZERO));
+	break;
+
+    case RADIAL_TWO:
+	/*
+	   pdx = x - c1x, pdy = y - c1y;
+	   A = dx² + dy² - dr²
+	   B = -2*(pdx*dx + pdy*dy + r1*dr);
+	   C = pdx² + pdy² - r1²;
+	   det = B*B - 4*A*C;
+	   t = (-B + sqrt (det)) / (2 * A)
+	   */
+
+	/* u0.x = pdx, u0.y = pdy, u[0].z = r1; */
+	i915_fs_add (FS_U0,
+		     i915_fs_operand (in, X, Y, ZERO, ZERO),
+		     i915_fs_operand (g0, X, Y, Z, ZERO));
+	/* u0.x = pdx, u0.y = pdy, u[0].z = r1, u[0].w = B; */
+	i915_fs_dp3 (FS_U0, MASK_W,
+		     i915_fs_operand (FS_U0, X, Y, ONE, ZERO),
+		     i915_fs_operand (g1, X, Y, Z, ZERO));
+	/* u1.x = pdx² + pdy² - r1²; [C] */
+	i915_fs_dp3 (FS_U1, MASK_X,
+		     i915_fs_operand (FS_U0, X, Y, Z, ZERO),
+		     i915_fs_operand (FS_U0, X, Y, NEG_Z, ZERO));
+	/* u1.x = C, u1.y = B, u1.z=-4*A; */
+	i915_fs_mov_masked (FS_U1, MASK_Y, i915_fs_operand (FS_U0, W, W, W, W));
+	i915_fs_mov_masked (FS_U1, MASK_Z, i915_fs_operand (g0, W, W, W, W));
+	/* u1.x = B² - 4*A*C */
+	i915_fs_dp2add (FS_U1, MASK_X,
+			i915_fs_operand (FS_U1, X, Y, ZERO, ZERO),
+			i915_fs_operand (FS_U1, Z, Y, ZERO, ZERO),
+			i915_fs_operand_zero ());
+	/* out.x = -B + sqrt (B² - 4*A*C),
+	 * out.y = -B - sqrt (B² - 4*A*C),
+	 */
+	i915_fs_rsq (out, MASK_X, i915_fs_operand (FS_U1, X, X, X, X));
+	i915_fs_mad (out, MASK_X | MASK_Y,
+		     i915_fs_operand (out, X, X, ZERO, ZERO),
+		     i915_fs_operand (FS_U1, X, NEG_X, ZERO, ZERO),
+		     i915_fs_operand (FS_U0, NEG_W, NEG_W, ZERO, ZERO));
+	/* out.x = (-B + sqrt (B² - 4*A*C)) / (2 * A),
+	 * out.y = (-B - sqrt (B² - 4*A*C)) / (2 * A)
+	 */
+	i915_fs_mul (out,
+		     i915_fs_operand (out, X, Y, ZERO, ZERO),
+		     i915_fs_operand (g1, W, W, ZERO, ZERO));
+	/* if (A > 0)
+	 *   out = (-B + sqrt (B² - 4*A*C)) / (2 * A),
+	 * else
+	 *   out = (-B - sqrt (B² - 4*A*C)) / (2 * A)
+	 */
+	i915_fs_cmp (out,
+		     i915_fs_operand (g1, W, ZERO, ZERO, ZERO),
+		     i915_fs_operand (out, X, ZERO, ZERO, ZERO),
+		     i915_fs_operand (out, Y, ZERO, ZERO, ZERO));
+	break;
+    }
+}
+
+/* Max instruction count: 7 */
+static inline void
+i915_shader_yuv_color (i915_device_t *device,
+		       int y, int u, int v,
+		       int c0, int c1, int c2,
+		       int out)
+{
+    i915_fs_mov_masked (FS_U0, MASK_X, i915_fs_operand_reg (y));
+    i915_fs_mov_masked (FS_U0, MASK_Y, i915_fs_operand_reg (u));
+    i915_fs_mov_masked (FS_U0, MASK_Z, i915_fs_operand_reg (v));
+
+    i915_fs_add (FS_U0,
+		 i915_fs_operand_reg (FS_U0),
+		 i915_fs_operand_reg (c0));
+    i915_fs_dp3 (out, MASK_X,
+		 i915_fs_operand_reg (FS_U0),
+		 i915_fs_operand (c1, X, ZERO, Y, ZERO));
+    i915_fs_dp3 (out, MASK_Z,
+		 i915_fs_operand_reg (FS_U0),
+		 i915_fs_operand (c1, Z, W, ZERO, ZERO));
+    i915_fs_dp3 (out, MASK_Y,
+		 i915_fs_operand_reg (FS_U0),
+		 i915_fs_operand_reg (c2));
+}
+
+static inline uint32_t
+i915_shader_channel_key (const union i915_shader_channel *channel)
+{
+    return (channel->type.fragment & 0x0f) | (channel->base.mode << FS_DETAILS_SHIFT);
+}
+
+static uint32_t
+i915_shader_channel_get_num_tex_coords (const union i915_shader_channel *channel)
+{
+    switch (channel->type.fragment) {
+    default:
+    case FS_ZERO:
+    case FS_ONE:
+    case FS_CONSTANT:
+    case FS_PURE:
+    case FS_DIFFUSE:
+	return 0;
+
+    case FS_LINEAR:
+    case FS_RADIAL:
+    case FS_TEXTURE:
+    case FS_SPANS:
+    case FS_YUV:
+	return 1;
+    }
+}
+
+static uint32_t
+i915_shader_get_num_tex_coords (const i915_shader_t *shader)
+{
+    uint32_t num_tex_coords;
+
+    num_tex_coords = 0;
+
+    num_tex_coords += i915_shader_channel_get_num_tex_coords (&shader->source);
+    num_tex_coords += i915_shader_channel_get_num_tex_coords (&shader->mask);
+    num_tex_coords += i915_shader_channel_get_num_tex_coords (&shader->clip);
+    num_tex_coords += i915_shader_channel_get_num_tex_coords (&shader->dst);
+
+    return num_tex_coords;
+}
+
+#define i915_fs_operand_impure(reg, channel, pure) \
+    (reg | \
+     (((pure & (1 << 0)) ? channel##_CHANNEL_VAL : ZERO_CHANNEL_VAL) << X_CHANNEL_SHIFT) | \
+     (((pure & (1 << 1)) ? channel##_CHANNEL_VAL : ZERO_CHANNEL_VAL) << Y_CHANNEL_SHIFT) | \
+     (((pure & (1 << 2)) ? channel##_CHANNEL_VAL : ZERO_CHANNEL_VAL) << Z_CHANNEL_SHIFT) | \
+     (((pure & (1 << 3)) ? channel##_CHANNEL_VAL : ZERO_CHANNEL_VAL) << W_CHANNEL_SHIFT))
+
+#define i915_fs_operand_pure(pure) \
+    (FS_R0 | \
+     (((pure & (1 << 0)) ? ONE_CHANNEL_VAL : ZERO_CHANNEL_VAL) << X_CHANNEL_SHIFT) | \
+     (((pure & (1 << 1)) ? ONE_CHANNEL_VAL : ZERO_CHANNEL_VAL) << Y_CHANNEL_SHIFT) | \
+     (((pure & (1 << 2)) ? ONE_CHANNEL_VAL : ZERO_CHANNEL_VAL) << Z_CHANNEL_SHIFT) | \
+     (((pure & (1 << 3)) ? ONE_CHANNEL_VAL : ZERO_CHANNEL_VAL) << W_CHANNEL_SHIFT))
+
+static void
+i915_set_shader_program (i915_device_t *device,
+			 const i915_shader_t *shader)
+{
+    uint32_t num_tex_coords;
+    uint32_t num_samplers;
+    uint32_t n;
+    uint32_t texture_offset = 0;
+    uint32_t constant_offset = 0;
+    uint32_t sampler_offset = 0;
+    uint32_t source_reg;
+    uint32_t source_pure;
+    uint32_t mask_reg;
+    uint32_t out_reg;
+    uint32_t dest_reg;
+    FS_LOCALS;
+
+    n = (i915_shader_channel_key (&shader->source) <<  0) |
+	(i915_shader_channel_key (&shader->mask)   <<  8) |
+	(i915_shader_channel_key (&shader->clip)   << 16) |
+	(shader->op << 24) |
+	((shader->opacity < 1.) << 30) |
+	(((shader->content & CAIRO_CONTENT_ALPHA) == CAIRO_CONTENT_ALPHA) << 31);
+    if (n == device->current_program)
+	return;
+    device->current_program = n;
+
+    FS_BEGIN ();
+
+    if (shader->source.type.fragment == FS_ZERO) {
+	if (shader->clip.type.fragment == FS_TEXTURE) {
+	    /* XXX need_combine */
+	    assert (shader->mask.type.fragment == (i915_fragment_shader_t) -1);
+	    i915_fs_dcl (FS_T0);
+	    i915_fs_texld (FS_U0, FS_S0, FS_T0);
+	    if ((shader->content & CAIRO_CONTENT_COLOR) == 0)
+		i915_fs_mov (FS_OC, i915_fs_operand (FS_U0, W, W, W, W));
+	    else
+		i915_fs_mov (FS_OC, i915_fs_operand (FS_U0, ZERO, ZERO, ZERO, W));
+	} else {
+	    i915_fs_mov (FS_OC, i915_fs_operand_zero ());
+	}
+
+	FS_END ();
+	return;
+    }
+
+    num_tex_coords = i915_shader_get_num_tex_coords (shader);
+    for (n = 0; n < num_tex_coords; n++)
+	i915_fs_dcl (FS_T0 + n);
+
+    num_samplers =
+	shader->source.base.n_samplers +
+	shader->mask.base.n_samplers +
+	shader->clip.base.n_samplers +
+	shader->dst.base.n_samplers;
+    for (n = 0; n < num_samplers; n++)
+	i915_fs_dcl (FS_S0 + n);
+
+    source_reg = ~0;
+    source_pure = 0;
+    out_reg = FS_R0;
+    if (! shader->need_combine &&
+	shader->mask.type.fragment == (i915_fragment_shader_t) -1 &&
+	shader->clip.type.fragment != FS_TEXTURE &&
+	shader->content != CAIRO_CONTENT_ALPHA)
+    {
+	out_reg = FS_OC;
+    }
+
+    switch (shader->source.type.fragment) {
+    default:
+    case FS_ZERO:
+    case FS_SPANS:
+	ASSERT_NOT_REACHED;
+
+    case FS_PURE:
+	source_pure = shader->source.solid.pure;
+    case FS_ONE:
+	break;
+
+    case FS_CONSTANT:
+	source_reg = FS_C0;
+	constant_offset += 1;
+	break;
+
+    case FS_DIFFUSE:
+	i915_fs_dcl (FS_T8);
+	source_reg = FS_T8;
+	break;
+
+    case FS_LINEAR:
+	i915_shader_linear_color (device, shader->source.base.mode,
+				  FS_T0, /* input */
+				  FS_C0, FS_C1, /* colour ramp */
+				  FS_U3); /* unpremultiplied output */
+	/* XXX can we defer premultiplication? */
+	i915_fs_mul (out_reg,
+		     i915_fs_operand_reg (FS_U3),
+		     i915_fs_operand (FS_U3, W, W, W, ONE));
+
+	constant_offset += 2;
+	texture_offset += 1;
+	source_reg = out_reg;
+	break;
+
+    case FS_RADIAL:
+	i915_shader_radial_coord (device, shader->source.base.mode,
+				  FS_T0, /* input */
+				  FS_C0, FS_C1, /* gradient constants */
+				  FS_R0); /* coordinate */
+
+	i915_fs_texld (out_reg, FS_S0, FS_R0);
+	constant_offset += 2;
+	texture_offset += 1;
+	sampler_offset += 1;
+	source_reg = out_reg;
+	break;
+
+    case FS_TEXTURE:
+	i915_fs_texld (out_reg, FS_S0, FS_T0);
+	texture_offset += 1;
+	sampler_offset += 1;
+	source_reg = out_reg;
+	break;
+
+    case FS_YUV:
+	/* Load samplers to temporaries. */
+	i915_fs_texld (FS_R0, FS_S0, FS_T0);
+	i915_fs_texld (FS_R1, FS_S1, FS_T0);
+	i915_fs_texld (FS_R2, FS_S2, FS_T0);
+
+	i915_shader_yuv_color (device,
+			       FS_R0, FS_R1, FS_R2, /* y, u, v */
+			       FS_C0, FS_C1, FS_C2, /* coefficients */
+			       out_reg);
+
+	constant_offset += 3;
+	texture_offset += 1;
+	sampler_offset += 3;
+	source_reg = out_reg;
+	break;
+    }
+
+    mask_reg = ~0;
+    switch (shader->mask.type.fragment) {
+    case FS_PURE:
+    case FS_ZERO:
+    case FS_YUV:
+    case FS_DIFFUSE:
+	ASSERT_NOT_REACHED;
+    case FS_ONE:
+    default:
+	break;
+
+    case FS_SPANS:
+	mask_reg = FS_T0 + texture_offset;
+	texture_offset += 1;
+	break;
+
+    case FS_CONSTANT:
+	mask_reg = FS_C0 + constant_offset;
+	constant_offset += 1;
+	break;
+
+    case FS_LINEAR:
+	i915_shader_linear_color (device, shader->mask.base.mode,
+				  FS_T0 + texture_offset, /* input */
+				  FS_C0 + constant_offset,
+				  FS_C0 + constant_offset + 1, /* colour ramp */
+				  FS_R1); /* unpremultiplied output */
+	constant_offset += 2;
+	texture_offset += 1;
+	mask_reg = FS_R1;
+	break;
+
+    case FS_RADIAL:
+	i915_shader_radial_coord (device, shader->mask.base.mode,
+				  FS_T0 + texture_offset, /* input */
+				  FS_C0 + constant_offset,
+				  FS_C0 + constant_offset + 1, /* gradient constants */
+				  FS_R1); /* coordinate */
+
+	i915_fs_texld (FS_R1, FS_S0 + sampler_offset, FS_R1);
+	constant_offset += 2;
+	texture_offset += 1;
+	sampler_offset += 1;
+	mask_reg = FS_R1;
+	break;
+
+    case FS_TEXTURE:
+	i915_fs_texld (FS_R1, FS_S0 + sampler_offset, FS_T0 + texture_offset);
+	texture_offset += 1;
+	sampler_offset += 1;
+	mask_reg = FS_R1;
+	break;
+    }
+
+    if (mask_reg != ~0U) {
+	if (! shader->need_combine &&
+	    shader->clip.type.fragment != FS_TEXTURE &&
+	    (shader->content != CAIRO_CONTENT_ALPHA || source_reg == ~0U))
+	{
+	    out_reg = FS_OC;
+	}
+	if (source_reg == ~0U) {
+	    if (source_pure) {
+		if (shader->mask.type.fragment == FS_SPANS) {
+		    if (out_reg == FS_OC && shader->content == CAIRO_CONTENT_ALPHA) {
+			if (source_pure & (1 << 3))
+			    i915_fs_mov (out_reg, i915_fs_operand (mask_reg, X, X, X, X));
+			else
+			    i915_fs_mov (out_reg, i915_fs_operand_zero ());
+		    } else {
+			i915_fs_mov (out_reg,
+				     i915_fs_operand_impure (mask_reg, X, source_pure));
+		    }
+		} else {
+		    /* XXX ComponentAlpha
+		       i915_fs_mov (out_reg,
+		       i915_fs_operand_pure (mask_reg,
+		       shader->source.solid.pure));
+		       */
+		    if (out_reg == FS_OC && shader->content == CAIRO_CONTENT_ALPHA) {
+			if (source_pure & (1 << 3))
+			    i915_fs_mov (out_reg, i915_fs_operand (mask_reg, W, W, W, W));
+			else
+			    i915_fs_mov (out_reg, i915_fs_operand_zero ());
+		    } else {
+			i915_fs_mov (out_reg,
+				     i915_fs_operand_impure (mask_reg, W, source_pure));
+		    }
+		}
+		source_reg = out_reg;
+	    } else if (shader->mask.type.fragment == FS_SPANS) {
+		i915_fs_mov (out_reg,
+			     i915_fs_operand (mask_reg, X, X, X, X));
+		source_reg = out_reg;
+	    } else {
+		source_reg = mask_reg;
+	    }
+	} else {
+	    if (shader->mask.type.fragment == FS_SPANS) {
+		    if (out_reg == FS_OC && shader->content == CAIRO_CONTENT_ALPHA) {
+			i915_fs_mul (out_reg,
+				     i915_fs_operand (source_reg, W, W, W, W),
+				     i915_fs_operand (mask_reg, X, X, X, X));
+		    } else {
+			i915_fs_mul (out_reg,
+				     i915_fs_operand_reg (source_reg),
+				     i915_fs_operand (mask_reg, X, X, X, X));
+		    }
+	    } else {
+		/* XXX ComponentAlpha
+		i915_fs_mul (FS_R0,
+			     i915_fs_operand_reg (source_reg),
+			     i915_fs_operand_reg (mask_reg));
+		 */
+		if (out_reg == FS_OC && shader->content == CAIRO_CONTENT_ALPHA) {
+		    i915_fs_mul (out_reg,
+				 i915_fs_operand (source_reg, W, W, W, W),
+				 i915_fs_operand (mask_reg, W, W, W, W));
+		} else {
+		    i915_fs_mul (out_reg,
+				 i915_fs_operand_reg (source_reg),
+				 i915_fs_operand (mask_reg, W, W, W, W));
+		}
+	    }
+
+	    source_reg = out_reg;
+	}
+    }
+
+    if (shader->opacity < 1.) {
+	i915_fs_mul (source_reg,
+		     i915_fs_operand_reg (source_reg),
+		     i915_fs_operand_reg (FS_C0 + constant_offset));
+	constant_offset++;
+    }
+
+    /* need to preserve order of src, mask, clip, dst */
+    mask_reg = ~0;
+    if (shader->clip.type.fragment == FS_TEXTURE) {
+	i915_fs_texld (FS_R1, FS_S0 + sampler_offset, FS_T0 + texture_offset);
+	texture_offset += 1;
+	sampler_offset += 1;
+	mask_reg = FS_R1;
+    }
+
+    if (shader->need_combine) {
+	assert (shader->dst.type.fragment == FS_TEXTURE);
+
+	i915_fs_texld (FS_R2, FS_S0 + sampler_offset, FS_T0 + texture_offset);
+	texture_offset += 1;
+	sampler_offset += 1;
+	dest_reg = FS_R2;
+
+	switch (shader->op) {
+	case CAIRO_OPERATOR_CLEAR:
+	case CAIRO_OPERATOR_SOURCE:
+	    ASSERT_NOT_REACHED;
+
+	case CAIRO_OPERATOR_OVER:
+	    if (source_reg == ~0U) {
+		/* XXX shader->source.type.fragment == FS_PURE */
+		dest_reg = FS_OC;
+	    } else {
+		i915_fs_add (FS_U0,
+			     i915_fs_operand (source_reg, NEG_W, NEG_W, NEG_W, NEG_W),
+			     i915_fs_operand_one ());
+		i915_fs_mul (FS_U0,
+			     i915_fs_operand_reg (FS_U0),
+			     dest_reg);
+		i915_fs_add (FS_R3,
+			     i915_fs_operand_reg (source_reg),
+			     i915_fs_operand_reg (FS_U0));
+		source_reg = FS_R3;
+	    }
+	    break;
+
+	case CAIRO_OPERATOR_IN:
+	    if (source_reg == ~0U) {
+		/* XXX shader->source.type.fragment == FS_PURE */
+		source_reg = dest_reg;
+	    } else {
+		i915_fs_mul (FS_R3,
+			     i915_fs_operand_reg (source_reg),
+			     dest_reg);
+		source_reg = FS_R3;
+	    }
+	    break;
+
+	case CAIRO_OPERATOR_OUT:
+	    if (source_reg == ~0U) {
+		/* XXX shader->source.type.fragment == FS_PURE */
+		i915_fs_mov (FS_R3, i915_fs_operand_zero ());
+		source_reg = FS_R3;
+	    } else {
+		i915_fs_add (FS_U0,
+			     i915_fs_operand (source_reg, NEG_W, NEG_W, NEG_W, NEG_W),
+			     i915_fs_operand_one ());
+		i915_fs_mul (FS_R3,
+			     i915_fs_operand_reg (FS_U0),
+			     dest_reg);
+		source_reg = FS_R3;
+	    }
+	    break;
+
+	case CAIRO_OPERATOR_ATOP:
+
+	case CAIRO_OPERATOR_DEST:
+	case CAIRO_OPERATOR_DEST_OVER:
+	case CAIRO_OPERATOR_DEST_IN:
+	case CAIRO_OPERATOR_DEST_OUT:
+	case CAIRO_OPERATOR_DEST_ATOP:
+
+	case CAIRO_OPERATOR_XOR:
+	case CAIRO_OPERATOR_ADD:
+	case CAIRO_OPERATOR_SATURATE:
+
+	case CAIRO_OPERATOR_MULTIPLY:
+	case CAIRO_OPERATOR_SCREEN:
+	case CAIRO_OPERATOR_OVERLAY:
+	case CAIRO_OPERATOR_DARKEN:
+	case CAIRO_OPERATOR_LIGHTEN:
+	case CAIRO_OPERATOR_COLOR_DODGE:
+	case CAIRO_OPERATOR_COLOR_BURN:
+	case CAIRO_OPERATOR_HARD_LIGHT:
+	case CAIRO_OPERATOR_SOFT_LIGHT:
+	case CAIRO_OPERATOR_DIFFERENCE:
+	case CAIRO_OPERATOR_EXCLUSION:
+	case CAIRO_OPERATOR_HSL_HUE:
+	case CAIRO_OPERATOR_HSL_SATURATION:
+	case CAIRO_OPERATOR_HSL_COLOR:
+	case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	    ASSERT_NOT_REACHED;
+	    break;
+	}
+    }
+
+    if (shader->clip.type.fragment == FS_TEXTURE) {
+	assert (mask_reg != ~0U);
+
+	if (! shader->need_combine) {
+	    /* (source IN clip) */
+	    if (source_reg == ~0U) {
+		if (source_pure == 0) {
+		    source_reg = mask_reg;
+		} else {
+		    out_reg = FS_OC;
+		    if ((shader->content & CAIRO_CONTENT_COLOR) == 0) {
+			if (source_pure & (1 << 3))
+			    i915_fs_mov (out_reg, i915_fs_operand (mask_reg, W, W, W, W));
+			else
+			    i915_fs_mov (out_reg, i915_fs_operand_zero ());
+		    } else {
+			i915_fs_mov (out_reg,
+				     i915_fs_operand_impure (mask_reg, W, source_pure));
+		    }
+		    source_reg = out_reg;
+		}
+	    } else if (mask_reg) {
+		out_reg = FS_OC;
+		if ((shader->content & CAIRO_CONTENT_COLOR) == 0) {
+		    i915_fs_mul (out_reg,
+				 i915_fs_operand (source_reg, W, W, W, W),
+				 i915_fs_operand (mask_reg, W, W, W, W));
+		} else {
+		    i915_fs_mul (out_reg,
+				 i915_fs_operand_reg (source_reg),
+				 i915_fs_operand (mask_reg, W, W, W, W));
+		}
+
+		source_reg = out_reg;
+	    }
+	} else {
+	    /* (source OP dest) LERP_clip dest */
+	    if (source_reg == ~0U) {
+		if (source_pure == 0) {
+		    i915_fs_mov (FS_R3,
+				 i915_fs_operand (mask_reg, W, W, W, W));
+		} else {
+		    i915_fs_mov (FS_R3,
+				 i915_fs_operand_impure (mask_reg, W, source_pure));
+		}
+	    } else {
+		i915_fs_mul (FS_R3,
+			     i915_fs_operand_reg (source_reg),
+			     i915_fs_operand (mask_reg, W, W, W, W));
+	    }
+
+	    i915_fs_add (mask_reg,
+			 i915_fs_operand_one (),
+			 i915_fs_operand (mask_reg, NEG_W, NEG_W, NEG_W, NEG_W));
+
+	    if (dest_reg != FS_OC) {
+		if (dest_reg == ~0U) {
+		    assert (shader->dst.type.fragment == FS_TEXTURE);
+
+		    i915_fs_texld (FS_R2, FS_S0 + sampler_offset, FS_T0 + texture_offset);
+		    texture_offset += 1;
+		    sampler_offset += 1;
+		    dest_reg = FS_R2;
+		}
+
+		i915_fs_mul (FS_U1,
+			     i915_fs_operand_reg (dest_reg),
+			     i915_fs_operand_reg (mask_reg));
+		mask_reg = FS_U1;
+	    }
+
+	    source_reg = FS_OC;
+	    if ((shader->content & CAIRO_CONTENT_COLOR) == 0) {
+		i915_fs_add (source_reg,
+			     i915_fs_operand (FS_R3, W, W, W, W),
+			     i915_fs_operand (mask_reg, W, W, W, W));
+	    } else {
+		i915_fs_add (source_reg,
+			     i915_fs_operand_reg (FS_R3),
+			     i915_fs_operand_reg (mask_reg));
+	    }
+	}
+    }
+
+    if (source_reg != FS_OC) {
+	if (source_reg == ~0U) {
+	    if (source_pure) {
+		if ((shader->content & CAIRO_CONTENT_COLOR) == 0) {
+		    if (source_pure & (1 << 3))
+			i915_fs_mov (FS_OC, i915_fs_operand_one ());
+		    else
+			i915_fs_mov (FS_OC, i915_fs_operand_zero ());
+		} else
+		    i915_fs_mov (FS_OC, i915_fs_operand_pure (source_pure));
+	    } else {
+		i915_fs_mov (FS_OC, i915_fs_operand_one ());
+	    }
+	} else if ((shader->content & CAIRO_CONTENT_COLOR) == 0) {
+	    i915_fs_mov (FS_OC, i915_fs_operand (source_reg, W, W, W, W));
+	} else {
+	    i915_fs_mov (FS_OC, i915_fs_operand_reg (source_reg));
+	}
+    }
+
+    FS_END ();
+}
+
+static cairo_bool_t
+i915_shader_linear_init (struct i915_shader_linear *l,
+			 const cairo_linear_pattern_t *linear)
+{
+    double x0, y0, sf;
+    double dx, dy, offset;
+
+    dx = linear->pd2.x - linear->pd1.x;
+    dy = linear->pd2.y - linear->pd1.y;
+    sf = dx * dx + dy * dy;
+    if (sf <= 1e-5)
+	return FALSE;
+
+    dx /= sf;
+    dy /= sf;
+
+    x0 = linear->pd1.x;
+    y0 = linear->pd1.y;
+    offset = dx*x0 + dy*y0;
+
+    if (_cairo_matrix_is_identity (&linear->base.base.matrix)) {
+	l->dx = dx;
+	l->dy = dy;
+	l->offset = -offset;
+    } else {
+	cairo_matrix_t m;
+
+	cairo_matrix_init (&m, dx, 0, dy, 0, -offset, 0);
+	cairo_matrix_multiply (&m, &linear->base.base.matrix, &m);
+	l->dx = m.xx;
+	l->dy = m.xy;
+	l->offset = m.x0;
+    }
+
+    return TRUE;
+}
+
+static cairo_bool_t
+i915_shader_linear_contains_rectangle (struct i915_shader_linear *l,
+				       const cairo_rectangle_int_t *extents)
+{
+    double v;
+
+    v = i915_shader_linear_texcoord (l,
+				     extents->x,
+				     extents->y);
+    if (v < 0.)
+	return FALSE;
+    if (v > 1.)
+	return FALSE;
+
+    v = i915_shader_linear_texcoord (l,
+				     extents->x + extents->width,
+				     extents->y);
+    if (v < 0.)
+	return FALSE;
+    if (v > 1.)
+	return FALSE;
+
+    v = i915_shader_linear_texcoord (l,
+				     extents->x,
+				     extents->y + extents->height);
+    if (v < 0.)
+	return FALSE;
+    if (v > 1.)
+	return FALSE;
+
+    v = i915_shader_linear_texcoord (l,
+				     extents->x + extents->width,
+				     extents->y + extents->height);
+    if (v < 0.)
+	return FALSE;
+    if (v > 1.)
+	return FALSE;
+
+    return TRUE;
+}
+
+#define is_pure(C,mask) (((mask) == 0) || (C) <= 0x00ff || (C) >= 0xff00)
+#define is_one(C,mask) (((mask) != 0) && (C) >= 0xff00)
+#define is_zero(C,mask) (((mask) != 0) && (C) <= 0x00ff)
+
+static cairo_status_t
+i915_shader_acquire_solid (i915_shader_t *shader,
+			   union i915_shader_channel *src,
+			   const cairo_solid_pattern_t *solid,
+			   const cairo_rectangle_int_t *extents)
+{
+    cairo_content_t content;
+
+    content = CAIRO_CONTENT_COLOR_ALPHA;
+    src->solid.color = solid->color;
+    if (content == 0 || solid->color.alpha_short <= 0x00ff)
+    {
+	src->base.content = CAIRO_CONTENT_ALPHA;
+	src->type.fragment = FS_ZERO;
+    }
+    else if ((((content & CAIRO_CONTENT_COLOR) == 0)  ||
+	      (solid->color.red_short >= 0xff00 &&
+	       solid->color.green_short >= 0xff00 &&
+	       solid->color.blue_short >= 0xff00)) &&
+	     ((content & CAIRO_CONTENT_ALPHA) == 0 ||
+	      solid->color.alpha_short >= 0xff00))
+    {
+	src->base.content = CAIRO_CONTENT_ALPHA;
+	src->type.fragment = FS_ONE;
+    }
+    else if (is_pure (solid->color.red_short, content & CAIRO_CONTENT_COLOR) &&
+	     is_pure (solid->color.green_short, content & CAIRO_CONTENT_COLOR) &&
+	     is_pure (solid->color.blue_short, content & CAIRO_CONTENT_COLOR) &&
+	     is_pure (solid->color.alpha_short, content & CAIRO_CONTENT_ALPHA))
+    {
+	src->solid.pure = 0;
+	src->solid.pure |= is_one (solid->color.red_short,   content & CAIRO_CONTENT_COLOR) << 0;
+	src->solid.pure |= is_one (solid->color.green_short, content & CAIRO_CONTENT_COLOR) << 1;
+	src->solid.pure |= is_one (solid->color.blue_short,  content & CAIRO_CONTENT_COLOR) << 2;
+	src->solid.pure |= (! is_zero (solid->color.alpha_short, content & CAIRO_CONTENT_ALPHA)) << 3;
+
+	if (src->solid.pure == 0) {
+	    src->base.content = CAIRO_CONTENT_ALPHA;
+	    src->type.fragment = FS_ZERO;
+	} else if (src->solid.pure == 0x7) {
+	    src->base.content = CAIRO_CONTENT_ALPHA;
+	    src->type.fragment = FS_ONE;
+	} else {
+	    src->base.content = content;
+	    src->type.fragment = FS_PURE;
+	    src->base.mode = src->solid.pure;
+	}
+    }
+    else
+    {
+	src->base.content = content;
+	src->type.fragment = src == &shader->source ? FS_DIFFUSE : FS_CONSTANT;
+    }
+    src->type.vertex = src->type.fragment == FS_ZERO ? VS_ZERO : VS_CONSTANT;
+    src->type.pattern = PATTERN_CONSTANT;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_shader_acquire_linear (i915_shader_t *shader,
+			    union i915_shader_channel *src,
+			    const cairo_linear_pattern_t *linear,
+			    const cairo_rectangle_int_t *extents)
+{
+    cairo_bool_t mode = LINEAR_TEXTURE;
+    cairo_status_t status;
+
+    if (i915_shader_linear_init (&src->linear, linear) &&
+	linear->base.n_stops == 2 &&
+	linear->base.stops[0].offset == 0.0 &&
+	linear->base.stops[1].offset == 1.0)
+    {
+	if (i915_shader_linear_contains_rectangle (&src->linear,
+						   extents))
+	{
+	    /* XXX can also lerp if contained within offset range */
+	    mode = LINEAR_NONE;
+	}
+	else switch (linear->base.base.extend) {
+	case CAIRO_EXTEND_REPEAT:
+	    mode = LINEAR_REPEAT;
+	    break;
+	case CAIRO_EXTEND_PAD:
+	    mode = LINEAR_PAD;
+	    break;
+	case CAIRO_EXTEND_NONE:
+	    break;
+	case CAIRO_EXTEND_REFLECT:
+	    break;
+	default:
+	    ASSERT_NOT_REACHED;
+	    break;
+	}
+    }
+
+    src->type.vertex = VS_LINEAR;
+    src->type.pattern = PATTERN_LINEAR;
+    src->base.texfmt = TEXCOORDFMT_1D;
+    src->base.content = CAIRO_CONTENT_COLOR_ALPHA;
+    src->base.mode = mode;
+    if (mode == LINEAR_TEXTURE) {
+	intel_buffer_t buffer;
+
+	status = intel_gradient_render ((intel_device_t *) shader->target->intel.drm.base.device,
+					&linear->base, &buffer);
+	if (unlikely (status))
+	    return status;
+
+	src->type.fragment = FS_TEXTURE;
+	src->base.bo = intel_bo_reference (buffer.bo);
+	src->base.n_samplers = 1;
+	src->base.offset[0] = buffer.offset;
+	src->base.map[0] = buffer.map0;
+	src->base.map[1] = buffer.map1;
+	src->base.sampler[0] =
+	    (MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	    i915_texture_filter (CAIRO_FILTER_BILINEAR);
+	src->base.sampler[1] =
+	    SS3_NORMALIZED_COORDS |
+	    i915_texture_extend (linear->base.base.extend);
+    } else {
+	src->type.fragment = FS_LINEAR;
+	src->linear.color0.red   = linear->base.stops[0].color.red;
+	src->linear.color0.green = linear->base.stops[0].color.green;
+	src->linear.color0.blue  = linear->base.stops[0].color.blue;
+	src->linear.color0.alpha = linear->base.stops[0].color.alpha;
+
+	src->linear.color1.red   = linear->base.stops[1].color.red;
+	src->linear.color1.green = linear->base.stops[1].color.green;
+	src->linear.color1.blue  = linear->base.stops[1].color.blue;
+	src->linear.color1.alpha = linear->base.stops[1].color.alpha;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_shader_acquire_radial (i915_shader_t *shader,
+			    union i915_shader_channel *src,
+			    const cairo_radial_pattern_t *radial,
+			    const cairo_rectangle_int_t *extents)
+{
+    intel_buffer_t buffer;
+    cairo_status_t status;
+
+    status = intel_gradient_render ((intel_device_t *) shader->target->intel.drm.base.device,
+				    &radial->base, &buffer);
+    if (unlikely (status))
+	return status;
+
+    i915_shader_radial_init (&src->radial, radial);
+
+    src->type.vertex = VS_TEXTURE;
+    src->type.fragment = FS_RADIAL;
+    src->type.pattern = PATTERN_RADIAL;
+    src->base.texfmt = TEXCOORDFMT_2D;
+
+    src->base.content = CAIRO_CONTENT_COLOR_ALPHA;
+    src->base.bo = intel_bo_reference (buffer.bo);
+    src->base.n_samplers = 1;
+    src->base.offset[0] = buffer.offset;
+    src->base.map[0] = buffer.map0;
+    src->base.map[1] = buffer.map1;
+    src->base.sampler[0] =
+	(MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	i915_texture_filter (CAIRO_FILTER_BILINEAR);
+    src->base.sampler[1] =
+	SS3_NORMALIZED_COORDS |
+	i915_texture_extend (radial->base.base.extend);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_surface_clone (i915_device_t *device,
+		    cairo_image_surface_t *image,
+		    i915_surface_t **clone_out)
+{
+    i915_surface_t *clone;
+    cairo_status_t status;
+
+#if 0
+    clone =
+	i915_surface_create_from_cacheable_image_internal (device, image);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+#else
+    cairo_format_t format;
+
+    format = image->format;
+    if (format == CAIRO_FORMAT_A1)
+	format = CAIRO_FORMAT_A8;
+
+    clone = (i915_surface_t *)
+	i915_surface_create_internal (&device->intel.base,
+				      format,
+				      image->width,
+				      image->height,
+				      I915_TILING_DEFAULT,
+				      FALSE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    status = intel_bo_put_image (&device->intel,
+				 to_intel_bo (clone->intel.drm.bo),
+				 image,
+				 0, 0,
+				 image->width, image->height,
+				 0, 0);
+
+    if (unlikely (status))
+	return status;
+#endif
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_surface_clone_subimage (i915_device_t *device,
+			     cairo_image_surface_t *image,
+			     const cairo_rectangle_int_t *extents,
+			     i915_surface_t **clone_out)
+{
+    i915_surface_t *clone;
+    cairo_status_t status;
+    cairo_format_t format;
+
+    format = image->format;
+    if (format == CAIRO_FORMAT_A1)
+	format = CAIRO_FORMAT_A8;
+
+    clone = (i915_surface_t *)
+	i915_surface_create_internal (&device->intel.base,
+				      format,
+				      extents->width,
+				      extents->height,
+				      I915_TILING_NONE,
+				      FALSE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    status = intel_bo_put_image (&device->intel,
+				 to_intel_bo (clone->intel.drm.bo),
+				 image,
+				 extents->x, extents->y,
+				 extents->width, extents->height,
+				 0, 0);
+
+    if (unlikely (status))
+	return status;
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_surface_render_pattern (i915_device_t *device,
+			     const cairo_surface_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents,
+			     i915_surface_t **clone_out)
+{
+    i915_surface_t *clone;
+    cairo_surface_t *image;
+    cairo_status_t status;
+    void *ptr;
+
+    clone = (i915_surface_t *)
+	i915_surface_create_internal (&device->intel.base,
+				      _cairo_format_from_content (pattern->surface->content),
+				      extents->width,
+				      extents->height,
+				      I915_TILING_NONE,
+				      FALSE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    ptr = intel_bo_map (&device->intel,
+			to_intel_bo (clone->intel.drm.bo));
+    if (unlikely (ptr == NULL)) {
+	cairo_surface_destroy (&clone->intel.drm.base);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    image = cairo_image_surface_create_for_data (ptr,
+						 clone->intel.drm.format,
+						 clone->intel.drm.width,
+						 clone->intel.drm.height,
+						 clone->intel.drm.stride);
+    if (unlikely (image->status)) {
+	cairo_surface_destroy (&clone->intel.drm.base);
+	return image->status;
+    }
+
+    status = _cairo_surface_offset_paint (image,
+					  extents->x, extents->y,
+					  CAIRO_OPERATOR_SOURCE,
+					  &pattern->base,
+					  NULL);
+    cairo_surface_destroy (image);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (&clone->intel.drm.base);
+	return status;
+    }
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_shader_acquire_solid_surface (i915_shader_t *shader,
+				   union i915_shader_channel *src,
+				   cairo_surface_t *surface,
+				   const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_pattern_t pattern;
+    cairo_surface_t *pixel;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_status_t status;
+    uint32_t argb;
+
+    status = _cairo_surface_acquire_source_image (surface, &image, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    /* extract the pixel as argb32 */
+    pixel = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
+    _cairo_pattern_init_for_surface (&pattern, &image->base);
+    cairo_matrix_init_translate (&pattern.base.matrix, extents->x, extents->y);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    status = _cairo_surface_paint (pixel, CAIRO_OPERATOR_SOURCE, &pattern.base, NULL);
+    _cairo_pattern_fini (&pattern.base);
+
+    _cairo_surface_release_source_image (surface, image, image_extra);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (pixel);
+	return status;
+    }
+
+    image = (cairo_image_surface_t *) pixel;
+    argb = *(uint32_t *) image->data;
+    cairo_surface_destroy (pixel);
+
+    if (argb >> 24 == 0) {
+	_cairo_color_init_rgba (&src->solid.color, 0, 0, 0, 0);
+    } else {
+	uint8_t alpha = argb >> 24;
+
+	_cairo_color_init_rgba (&src->solid.color,
+				((((argb >> 16) & 0xff) * 255 + alpha / 2) / alpha) / 255.,
+				((((argb >>  8) & 0xff) * 255 + alpha / 2) / alpha) / 255.,
+				((((argb >>  0) & 0xff) * 255 + alpha / 2) / alpha) / 255.,
+				alpha / 255.);
+    }
+
+    src->base.content = CAIRO_CONTENT_COLOR_ALPHA;
+    src->type.fragment = FS_CONSTANT;
+    src->type.vertex = VS_CONSTANT;
+    src->type.pattern = PATTERN_CONSTANT;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_shader_acquire_surface (i915_shader_t *shader,
+			     union i915_shader_channel *src,
+			     const cairo_surface_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents)
+{
+    int surface_width, surface_height;
+    cairo_surface_t *surface, *drm;
+    cairo_extend_t extend;
+    cairo_filter_t filter;
+    cairo_matrix_t m;
+    int src_x = 0, src_y = 0;
+    cairo_surface_t *free_me = NULL;
+    cairo_status_t status;
+    cairo_rectangle_int_t sample;
+
+    assert (src->type.fragment == (i915_fragment_shader_t) -1);
+    drm = surface = pattern->surface;
+
+    extend = pattern->base.extend;
+    src->base.matrix = pattern->base.matrix;
+    filter = pattern->base.filter;
+    _cairo_pattern_sampled_area(&pattern->base, extents, sample);
+
+    if (surface->type == CAIRO_SURFACE_TYPE_DRM) {
+	if (surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    drm = ((cairo_surface_subsurface_t *) surface)->target;
+	} else if (surface->backend->type == CAIRO_INTERNAL_SURFACE_TYPE_SNAPSHOT) {
+	    drm = ((cairo_surface_snapshot_t *) surface)->target;
+	}
+    }
+
+    if (drm->type == CAIRO_SURFACE_TYPE_DRM) {
+	i915_surface_t *s = (i915_surface_t *) drm;
+
+	if (surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    if (s->intel.drm.base.device == shader->target->intel.drm.base.device &&
+		s != shader->target)
+	    {
+		cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) surface;
+		int x;
+
+		status = i915_surface_fallback_flush (s);
+		if (unlikely (status))
+		    return status;
+
+		/* XXX blt subimage and cache snapshot */
+
+		if (to_intel_bo (s->intel.drm.bo)->batch_write_domain) {
+		    /* XXX pipelined flush of RENDER/TEXTURE cache */
+		}
+
+		src->type.fragment = FS_TEXTURE;
+		src->surface.pixel = NONE;
+		surface_width  = sub->extents.width;
+		surface_height = sub->extents.height;
+
+		src->base.bo = intel_bo_reference (to_intel_bo (s->intel.drm.bo));
+		src->base.n_samplers = 1;
+
+		x = sub->extents.x;
+		if (s->intel.drm.format != CAIRO_FORMAT_A8)
+		    x *= 4;
+
+		/* XXX tiling restrictions upon offset? */
+		src->base.offset[0] = s->offset + sub->extents.y * s->intel.drm.stride + x;
+		src->base.map[0] = s->map0;
+		src->base.map[0] &= ~((2047 << MS3_HEIGHT_SHIFT) | (2047 << MS3_WIDTH_SHIFT));
+		src->base.map[0] |=
+		    ((sub->extents.height - 1) << MS3_HEIGHT_SHIFT) |
+		    ((sub->extents.width - 1)  << MS3_WIDTH_SHIFT);
+		src->base.map[1] = (s->intel.drm.stride / 4 - 1) << MS4_PITCH_SHIFT;
+	    }
+	} else {
+	    /* XXX if s == shader->dst allow if FILTER_NEAREST, EXTEND_NONE? */
+	    if (s->intel.drm.base.device == shader->target->intel.drm.base.device) {
+		status = i915_surface_fallback_flush (s);
+		if (unlikely (status))
+		    return status;
+
+		if (s == shader->target || i915_surface_needs_tiling (s)) {
+		    status = i915_surface_copy_subimage (i915_device (shader->target),
+							 s, &sample, TRUE, &s);
+		    if (unlikely (status))
+			return status;
+
+		    free_me = drm = &s->intel.drm.base;
+		}
+
+		src->type.fragment = FS_TEXTURE;
+		src->surface.pixel = NONE;
+
+		surface_width  = s->intel.drm.width;
+		surface_height = s->intel.drm.height;
+
+		src->base.bo = intel_bo_reference (to_intel_bo (s->intel.drm.bo));
+		src->base.n_samplers = 1;
+		src->base.offset[0] = s->offset;
+		src->base.map[0] = s->map0;
+		src->base.map[1] = s->map1;
+	    }
+	}
+    }
+
+    if (src->type.fragment == (i915_fragment_shader_t) -1) {
+	i915_surface_t *s;
+
+	if (extents->width == 1 && extents->height == 1) {
+	    return i915_shader_acquire_solid_surface (shader, src,
+						      surface, extents);
+	}
+
+	s = (i915_surface_t *)
+	    _cairo_surface_has_snapshot (surface,
+					 shader->target->intel.drm.base.backend);
+	if (s == NULL) {
+	    cairo_status_t status;
+
+#if 0
+	    /* XXX hackity hack hack */
+	    status = i915_clone_yuv (surface, src,
+				     image->width, image->height,
+				     clone_out);
+#endif
+
+	    if (sample.width > 2048 || sample.height > 2048) {
+		status = i915_surface_render_pattern (i915_device (shader->target),
+						      pattern, extents,
+						      &s);
+		if (unlikely (status))
+		    return status;
+
+		extend = CAIRO_EXTEND_NONE;
+		filter = CAIRO_FILTER_NEAREST;
+		cairo_matrix_init_translate (&src->base.matrix,
+					     -extents->x, -extents->y);
+	    } else {
+		cairo_image_surface_t *image;
+		void *image_extra;
+
+		status = _cairo_surface_acquire_source_image (surface, &image, &image_extra);
+		if (unlikely (status))
+		    return status;
+
+		if (image->width  < 2048 &&
+		    image->height < 2048 &&
+		    sample.width  >= image->width / 4 &&
+		    sample.height >= image->height /4)
+		{
+
+		    status = i915_surface_clone (i915_device (shader->target),
+						 image, &s);
+
+		    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+			_cairo_surface_attach_snapshot (surface,
+							&s->intel.drm.base,
+							intel_surface_detach_snapshot);
+
+			status = intel_snapshot_cache_insert (&i915_device (shader->target)->intel,
+							      &s->intel);
+			if (unlikely (status)) {
+			    cairo_surface_finish (&s->intel.drm.base);
+			    cairo_surface_destroy (&s->intel.drm.base);
+			}
+		    }
+		}
+		else
+		{
+		    status = i915_surface_clone_subimage (i915_device (shader->target),
+							  image, &sample, &s);
+		    src_x = -extents->x;
+		    src_y = -extents->y;
+		}
+
+		_cairo_surface_release_source_image (surface, image, image_extra);
+		if (unlikely (status))
+		    return status;
+	    }
+
+	    free_me = &s->intel.drm.base;
+	}
+
+	src->type.fragment = FS_TEXTURE;
+	src->surface.pixel = NONE;
+
+	src->base.bo = intel_bo_reference (to_intel_bo (s->intel.drm.bo));
+	src->base.n_samplers = 1;
+	src->base.offset[0] = s->offset;
+	src->base.map[0] = s->map0;
+	src->base.map[1] = s->map1;
+
+	drm = &s->intel.drm.base;
+
+	surface_width  = s->intel.drm.width;
+	surface_height = s->intel.drm.height;
+    }
+
+    /* XXX transform nx1 or 1xn surfaces to 1D */
+
+    src->type.pattern = PATTERN_TEXTURE;
+    if (extend != CAIRO_EXTEND_NONE &&
+	sample.x >= 0 && sample.y >= 0 &&
+	sample.x + sample.width  <= surface_width &&
+	sample.y + sample.height <= surface_height)
+    {
+	extend = CAIRO_EXTEND_NONE;
+    }
+    if (extend == CAIRO_EXTEND_NONE) {
+	src->type.vertex = VS_TEXTURE_16;
+	src->base.texfmt = TEXCOORDFMT_2D_16;
+    } else {
+	src->type.vertex = VS_TEXTURE;
+	src->base.texfmt = TEXCOORDFMT_2D;
+    }
+    src->base.content = drm->content;
+
+    src->base.sampler[0] =
+	(MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	i915_texture_filter (filter);
+    src->base.sampler[1] =
+	SS3_NORMALIZED_COORDS |
+	i915_texture_extend (extend);
+
+    /* tweak the src matrix to map from dst to texture coordinates */
+    if (src_x | src_y)
+	cairo_matrix_translate (&src->base.matrix, src_x, src_x);
+    cairo_matrix_init_scale (&m, 1. / surface_width, 1. / surface_height);
+    cairo_matrix_multiply (&src->base.matrix, &src->base.matrix, &m);
+
+    if (free_me != NULL)
+	cairo_surface_destroy (free_me);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+i915_shader_acquire_pattern (i915_shader_t *shader,
+			     union i915_shader_channel *src,
+			     const cairo_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return i915_shader_acquire_solid (shader, src,
+					  (cairo_solid_pattern_t *) pattern,
+					  extents);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return i915_shader_acquire_linear (shader, src,
+					   (cairo_linear_pattern_t *) pattern,
+					   extents);
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return i915_shader_acquire_radial (shader, src,
+					   (cairo_radial_pattern_t *) pattern,
+					   extents);
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return i915_shader_acquire_surface (shader, src,
+					    (cairo_surface_pattern_t *) pattern,
+					    extents);
+
+    default:
+	ASSERT_NOT_REACHED;
+	return CAIRO_STATUS_SUCCESS;
+    }
+}
+
+static uint32_t
+i915_get_blend (cairo_operator_t op,
+		i915_surface_t *dst)
+{
+#define SBLEND(X) ((BLENDFACT_##X) << S6_CBUF_SRC_BLEND_FACT_SHIFT)
+#define DBLEND(X) ((BLENDFACT_##X) << S6_CBUF_DST_BLEND_FACT_SHIFT)
+    static const struct blendinfo {
+	cairo_bool_t dst_alpha;
+	uint32_t src_blend;
+	uint32_t dst_blend;
+	enum {
+	    BOUNDED,
+	    SIMPLE,
+	    XRENDER,
+	} kind;
+    } i915_blend_op[] = {
+	{0, SBLEND (ZERO),          DBLEND (ZERO), BOUNDED}, /* Clear */
+	{0, SBLEND (ONE),           DBLEND (ZERO), BOUNDED}, /* Src */
+
+	{0, SBLEND (ONE),           DBLEND (INV_SRC_ALPHA), SIMPLE}, /* Over */
+	{1, SBLEND (DST_ALPHA),     DBLEND (ZERO), XRENDER}, /* In */
+	{1, SBLEND (INV_DST_ALPHA), DBLEND (ZERO), XRENDER}, /* Out */
+	{1, SBLEND (DST_ALPHA),     DBLEND (INV_SRC_ALPHA), SIMPLE}, /* Atop */
+
+	{0, SBLEND (ZERO),          DBLEND (ONE), SIMPLE}, /* Dst */
+	{1, SBLEND (INV_DST_ALPHA), DBLEND (ONE), SIMPLE}, /* OverReverse */
+	{0, SBLEND (ZERO),          DBLEND (SRC_ALPHA), XRENDER}, /* InReverse */
+	{0, SBLEND (ZERO),          DBLEND (INV_SRC_ALPHA), SIMPLE}, /* OutReverse */
+	{1, SBLEND (INV_DST_ALPHA), DBLEND (SRC_ALPHA), XRENDER}, /* AtopReverse */
+
+	{1, SBLEND (INV_DST_ALPHA), DBLEND (INV_SRC_ALPHA), SIMPLE}, /* Xor */
+	{0, SBLEND (ONE),           DBLEND (ONE), SIMPLE}, /* Add */
+	//{0, 0, SBLEND (SRC_ALPHA_SATURATE),	    DBLEND (ONE), SIMPLE}, /* XXX Saturate */
+    };
+    uint32_t sblend, dblend;
+
+    if (op >= ARRAY_LENGTH (i915_blend_op))
+	return 0;
+
+    if (i915_blend_op[op].kind == BOUNDED)
+	return 0;
+
+    sblend = i915_blend_op[op].src_blend;
+    dblend = i915_blend_op[op].dst_blend;
+
+    /* If there's no dst alpha channel, adjust the blend op so that we'll treat
+     * it as always 1.
+     */
+    if ((dst->intel.drm.base.content & CAIRO_CONTENT_ALPHA) == 0 &&
+	i915_blend_op[op].dst_alpha)
+    {
+	if (sblend == SBLEND (DST_ALPHA))
+	    sblend = SBLEND (ONE);
+	else if (sblend == SBLEND (INV_DST_ALPHA))
+	    sblend = SBLEND (ZERO);
+    }
+
+    /* i915 engine reads 8bit color buffer into green channel in cases
+       like color buffer blending etc., and also writes back green channel.
+       So with dst_alpha blend we should use color factor. See spec on
+       "8-bit rendering" */
+    if (dst->intel.drm.format == CAIRO_FORMAT_A8 && i915_blend_op[op].dst_alpha) {
+	if (sblend == SBLEND (DST_ALPHA))
+	    sblend = SBLEND (DST_COLR);
+	else if (sblend == SBLEND (INV_DST_ALPHA))
+	    sblend = SBLEND (INV_DST_COLR);
+    }
+
+    return sblend | dblend;
+#undef SBLEND
+#undef DBLEND
+}
+
+static void
+i915_shader_channel_init (union i915_shader_channel *channel)
+{
+    channel->type.vertex = (i915_vertex_shader_t) -1;
+    channel->type.fragment = (i915_fragment_shader_t) -1;
+    channel->type.pattern = (i915_shader_channel_t) -1;
+    channel->base.texfmt = TEXCOORDFMT_NOT_PRESENT;
+    channel->base.bo = NULL;
+    channel->base.n_samplers = 0;
+    channel->base.mode = 0;
+}
+
+static void
+i915_shader_channel_fini (i915_device_t *device,
+			   union i915_shader_channel *channel)
+{
+    switch (channel->type.pattern) {
+    case PATTERN_TEXTURE:
+    case PATTERN_BASE:
+    case PATTERN_LINEAR:
+    case PATTERN_RADIAL:
+	if (channel->base.bo != NULL)
+	    intel_bo_destroy (&device->intel, channel->base.bo);
+	break;
+
+    default:
+    case PATTERN_CONSTANT:
+	break;
+    }
+}
+
+static void
+i915_shader_channel_reset (i915_device_t *device,
+			   union i915_shader_channel *channel)
+{
+    i915_shader_channel_fini (device, channel);
+    i915_shader_channel_init (channel);
+}
+
+void
+i915_shader_init (i915_shader_t *shader,
+		  i915_surface_t *dst,
+		  cairo_operator_t op,
+		  double opacity)
+{
+    shader->committed = FALSE;
+    shader->device = i915_device (dst);
+    shader->target = dst;
+    shader->op = op;
+    shader->opacity = opacity;
+
+    shader->blend = i915_get_blend (op, dst);
+    shader->need_combine = FALSE;
+
+    shader->content = dst->intel.drm.base.content;
+
+    i915_shader_channel_init (&shader->source);
+    i915_shader_channel_init (&shader->mask);
+    i915_shader_channel_init (&shader->clip);
+    i915_shader_channel_init (&shader->dst);
+}
+
+static void
+i915_set_shader_samplers (i915_device_t *device,
+	                  const i915_shader_t *shader)
+{
+    uint32_t n_samplers, n_maps, n;
+    uint32_t samplers[2*4];
+    uint32_t maps[4*4];
+    uint32_t mask, s, m;
+
+    n_maps =
+	shader->source.base.n_samplers +
+	shader->mask.base.n_samplers +
+	shader->clip.base.n_samplers +
+	shader->dst.base.n_samplers;
+    assert (n_maps <= 4);
+
+    if (n_maps == 0)
+	return;
+
+    n_samplers =
+	!! shader->source.base.bo +
+	!! shader->mask.base.bo +
+	!! shader->clip.base.bo +
+	!! shader->dst.base.bo;
+
+    mask  = (1 << n_maps) - 1;
+
+    /* We check for repeated setting of sample state mainly to catch
+     * continuation of text strings across multiple show-glyphs.
+     */
+    s = m = 0;
+    if (shader->source.base.bo != NULL) {
+	samplers[s++] = shader->source.base.sampler[0];
+	samplers[s++] = shader->source.base.sampler[1];
+	maps[m++] = shader->source.base.bo->base.handle;
+	for (n = 0; n < shader->source.base.n_samplers; n++) {
+	    maps[m++] = shader->source.base.offset[n];
+	    maps[m++] = shader->source.base.map[2*n+0];
+	    maps[m++] = shader->source.base.map[2*n+1];
+	}
+    }
+    if (shader->mask.base.bo != NULL) {
+	samplers[s++] = shader->mask.base.sampler[0];
+	samplers[s++] = shader->mask.base.sampler[1];
+	maps[m++] = shader->mask.base.bo->base.handle;
+	for (n = 0; n < shader->mask.base.n_samplers; n++) {
+	    maps[m++] = shader->mask.base.offset[n];
+	    maps[m++] = shader->mask.base.map[2*n+0];
+	    maps[m++] = shader->mask.base.map[2*n+1];
+	}
+    }
+    if (shader->clip.base.bo != NULL) {
+	samplers[s++] = shader->clip.base.sampler[0];
+	samplers[s++] = shader->clip.base.sampler[1];
+	maps[m++] = shader->clip.base.bo->base.handle;
+	for (n = 0; n < shader->clip.base.n_samplers; n++) {
+	    maps[m++] = shader->clip.base.offset[n];
+	    maps[m++] = shader->clip.base.map[2*n+0];
+	    maps[m++] = shader->clip.base.map[2*n+1];
+	}
+    }
+    if (shader->dst.base.bo != NULL) {
+	samplers[s++] = shader->dst.base.sampler[0];
+	samplers[s++] = shader->dst.base.sampler[1];
+	maps[m++] = shader->dst.base.bo->base.handle;
+	for (n = 0; n < shader->dst.base.n_samplers; n++) {
+	    maps[m++] = shader->dst.base.offset[n];
+	    maps[m++] = shader->dst.base.map[2*n+0];
+	    maps[m++] = shader->dst.base.map[2*n+1];
+	}
+    }
+
+    if (n_maps > device->current_n_maps ||
+	memcmp (device->current_maps,
+		maps,
+		m * sizeof (uint32_t)))
+    {
+	memcpy (device->current_maps, maps, m * sizeof (uint32_t));
+	device->current_n_maps = n_maps;
+
+	if (device->current_source != NULL)
+	    *device->current_source = 0;
+	if (device->current_mask != NULL)
+	    *device->current_mask = 0;
+	if (device->current_clip != NULL)
+	    *device->current_clip = 0;
+
+#if 0
+	if (shader->source.type.pattern == PATTERN_TEXTURE) {
+	    switch ((int) shader->source.surface.surface->type) {
+	    case CAIRO_SURFACE_TYPE_DRM:
+		{
+		    i915_surface_t *surface =
+			(i915_surface_t *) shader->source.surface.surface;
+		    device->current_source = &surface->is_current_texture;
+		    surface->is_current_texture |= CURRENT_SOURCE;
+		    break;
+		}
+
+	    case I915_PACKED_PIXEL_SURFACE_TYPE:
+		{
+		    i915_packed_pixel_surface_t *surface =
+			(i915_packed_pixel_surface_t *) shader->source.surface.surface;
+		    device->current_source = &surface->is_current_texture;
+		    surface->is_current_texture |= CURRENT_SOURCE;
+		    break;
+		}
+
+	    default:
+		device->current_source = NULL;
+		break;
+	    }
+	} else
+	    device->current_source = NULL;
+
+	if (shader->mask.type.pattern == PATTERN_TEXTURE) {
+	    switch ((int) shader->mask.surface.surface->type) {
+	    case CAIRO_SURFACE_TYPE_DRM:
+		{
+		    i915_surface_t *surface =
+			(i915_surface_t *) shader->mask.surface.surface;
+		    device->current_mask = &surface->is_current_texture;
+		    surface->is_current_texture |= CURRENT_MASK;
+		    break;
+		}
+
+	    case I915_PACKED_PIXEL_SURFACE_TYPE:
+		{
+		    i915_packed_pixel_surface_t *surface =
+			(i915_packed_pixel_surface_t *) shader->mask.surface.surface;
+		    device->current_mask = &surface->is_current_texture;
+		    surface->is_current_texture |= CURRENT_MASK;
+		    break;
+		}
+
+	    default:
+		device->current_mask = NULL;
+		break;
+	    }
+	} else
+	    device->current_mask = NULL;
+#endif
+
+	OUT_DWORD (_3DSTATE_MAP_STATE | (3 * n_maps));
+	OUT_DWORD (mask);
+	for (n = 0; n < shader->source.base.n_samplers; n++) {
+	    i915_batch_emit_reloc (device, shader->source.base.bo,
+				   shader->source.base.offset[n],
+				   I915_GEM_DOMAIN_SAMPLER, 0,
+				   FALSE);
+	    OUT_DWORD (shader->source.base.map[2*n+0]);
+	    OUT_DWORD (shader->source.base.map[2*n+1]);
+	}
+	for (n = 0; n < shader->mask.base.n_samplers; n++) {
+	    i915_batch_emit_reloc (device, shader->mask.base.bo,
+				   shader->mask.base.offset[n],
+				   I915_GEM_DOMAIN_SAMPLER, 0,
+				   FALSE);
+	    OUT_DWORD (shader->mask.base.map[2*n+0]);
+	    OUT_DWORD (shader->mask.base.map[2*n+1]);
+	}
+	for (n = 0; n < shader->clip.base.n_samplers; n++) {
+	    i915_batch_emit_reloc (device, shader->clip.base.bo,
+				   shader->clip.base.offset[n],
+				   I915_GEM_DOMAIN_SAMPLER, 0,
+				   FALSE);
+	    OUT_DWORD (shader->clip.base.map[2*n+0]);
+	    OUT_DWORD (shader->clip.base.map[2*n+1]);
+	}
+	for (n = 0; n < shader->dst.base.n_samplers; n++) {
+	    i915_batch_emit_reloc (device, shader->dst.base.bo,
+				   shader->dst.base.offset[n],
+				   I915_GEM_DOMAIN_SAMPLER, 0,
+				   FALSE);
+	    OUT_DWORD (shader->dst.base.map[2*n+0]);
+	    OUT_DWORD (shader->dst.base.map[2*n+1]);
+	}
+    }
+
+    if (n_samplers > device->current_n_samplers ||
+	memcmp (device->current_samplers,
+		samplers,
+		s * sizeof (uint32_t)))
+    {
+	device->current_n_samplers = s;
+	memcpy (device->current_samplers, samplers, s * sizeof (uint32_t));
+
+	OUT_DWORD (_3DSTATE_SAMPLER_STATE | (3 * n_maps));
+	OUT_DWORD (mask);
+	s = 0;
+	for (n = 0; n < shader->source.base.n_samplers; n++) {
+	    OUT_DWORD (shader->source.base.sampler[0]);
+	    OUT_DWORD (shader->source.base.sampler[1] |
+		       (s << SS3_TEXTUREMAP_INDEX_SHIFT));
+	    OUT_DWORD (0x0);
+	    s++;
+	}
+	for (n = 0; n < shader->mask.base.n_samplers; n++) {
+	    OUT_DWORD (shader->mask.base.sampler[0]);
+	    OUT_DWORD (shader->mask.base.sampler[1] |
+		       (s << SS3_TEXTUREMAP_INDEX_SHIFT));
+	    OUT_DWORD (0x0);
+	    s++;
+	}
+	for (n = 0; n < shader->clip.base.n_samplers; n++) {
+	    OUT_DWORD (shader->clip.base.sampler[0]);
+	    OUT_DWORD (shader->clip.base.sampler[1] |
+		       (s << SS3_TEXTUREMAP_INDEX_SHIFT));
+	    OUT_DWORD (0x0);
+	    s++;
+	}
+	for (n = 0; n < shader->dst.base.n_samplers; n++) {
+	    OUT_DWORD (shader->dst.base.sampler[0]);
+	    OUT_DWORD (shader->dst.base.sampler[1] |
+		       (s << SS3_TEXTUREMAP_INDEX_SHIFT));
+	    OUT_DWORD (0x0);
+	    s++;
+	}
+    }
+}
+
+static uint32_t
+i915_shader_get_texcoords (const i915_shader_t *shader)
+{
+    uint32_t texcoords;
+    uint32_t tu;
+
+    texcoords = S2_TEXCOORD_NONE;
+    tu = 0;
+    if (shader->source.base.texfmt != TEXCOORDFMT_NOT_PRESENT) {
+	texcoords &= ~S2_TEXCOORD_FMT (tu, S2_TEXCOORD_FMT0_MASK);
+	texcoords |= S2_TEXCOORD_FMT (tu, shader->source.base.texfmt);
+	tu++;
+    }
+    if (shader->mask.base.texfmt != TEXCOORDFMT_NOT_PRESENT) {
+	texcoords &= ~S2_TEXCOORD_FMT (tu, S2_TEXCOORD_FMT0_MASK);
+	texcoords |= S2_TEXCOORD_FMT (tu, shader->mask.base.texfmt);
+	tu++;
+    }
+    if (shader->clip.base.texfmt != TEXCOORDFMT_NOT_PRESENT) {
+	texcoords &= ~S2_TEXCOORD_FMT (tu, S2_TEXCOORD_FMT0_MASK);
+	texcoords |= S2_TEXCOORD_FMT (tu, shader->clip.base.texfmt);
+	tu++;
+    }
+    if (shader->dst.base.texfmt != TEXCOORDFMT_NOT_PRESENT) {
+	texcoords &= ~S2_TEXCOORD_FMT (tu, S2_TEXCOORD_FMT0_MASK);
+	texcoords |= S2_TEXCOORD_FMT (tu, shader->dst.base.texfmt);
+	tu++;
+    }
+
+    return texcoords;
+}
+
+static void
+i915_set_shader_mode (i915_device_t *device,
+	              const i915_shader_t *shader)
+{
+    uint32_t texcoords;
+    uint32_t mask, cnt;
+
+    texcoords = i915_shader_get_texcoords (shader);
+
+    mask = cnt = 0;
+
+    if (device->current_texcoords != texcoords)
+	mask |= I1_LOAD_S (2), cnt++;
+
+    if (device->current_blend != shader->blend)
+	mask |= I1_LOAD_S (6), cnt++;
+
+    if (cnt == 0)
+	return;
+
+    OUT_DWORD (_3DSTATE_LOAD_STATE_IMMEDIATE_1 | mask | (cnt-1));
+
+    if (device->current_texcoords != texcoords) {
+	OUT_DWORD (texcoords);
+	device->current_texcoords = texcoords;
+    }
+
+    if (device->current_blend != shader->blend) {
+	if (shader->blend) {
+	    OUT_DWORD (S6_CBUF_BLEND_ENABLE | S6_COLOR_WRITE_ENABLE |
+		       (BLENDFUNC_ADD << S6_CBUF_BLEND_FUNC_SHIFT) |
+		       shader->blend);
+	} else {
+	    OUT_DWORD (S6_COLOR_WRITE_ENABLE);
+	}
+
+	device->current_blend = shader->blend;
+    }
+}
+
+static void
+i915_set_constants (i915_device_t *device,
+		    const uint32_t *constants,
+		    uint32_t n_constants)
+{
+    uint32_t n;
+
+    OUT_DWORD (_3DSTATE_PIXEL_SHADER_CONSTANTS | n_constants);
+    OUT_DWORD ((1 << (n_constants >> 2)) - 1);
+
+    for (n = 0; n < n_constants; n++)
+	OUT_DWORD (constants[n]);
+
+    device->current_n_constants = n_constants;
+    memcpy (device->current_constants, constants, n_constants*4);
+}
+
+static uint32_t
+pack_constants (const union i915_shader_channel *channel,
+		uint32_t *constants)
+{
+    uint32_t count = 0, n;
+
+    switch (channel->type.fragment) {
+    case FS_ZERO:
+    case FS_ONE:
+    case FS_PURE:
+    case FS_DIFFUSE:
+	break;
+
+    case FS_CONSTANT:
+	constants[count++] = pack_float (channel->solid.color.red);
+	constants[count++] = pack_float (channel->solid.color.green);
+	constants[count++] = pack_float (channel->solid.color.blue);
+	constants[count++] = pack_float (channel->solid.color.alpha);
+	break;
+
+    case FS_LINEAR:
+	constants[count++] = pack_float (channel->linear.color0.red);
+	constants[count++] = pack_float (channel->linear.color0.green);
+	constants[count++] = pack_float (channel->linear.color0.blue);
+	constants[count++] = pack_float (channel->linear.color0.alpha);
+
+	constants[count++] = pack_float (channel->linear.color1.red);
+	constants[count++] = pack_float (channel->linear.color1.green);
+	constants[count++] = pack_float (channel->linear.color1.blue);
+	constants[count++] = pack_float (channel->linear.color1.alpha);
+	break;
+
+    case FS_RADIAL:
+	for (n = 0; n < ARRAY_LENGTH (channel->radial.constants); n++)
+	    constants[count++] = pack_float (channel->radial.constants[n]);
+	break;
+
+    case FS_TEXTURE:
+    case FS_YUV:
+    case FS_SPANS:
+	break;
+    }
+
+    return count;
+}
+
+static void
+i915_set_shader_constants (i915_device_t *device,
+	                   const i915_shader_t *shader)
+{
+    uint32_t constants[4*4*3+4];
+    unsigned n_constants;
+
+    n_constants = 0;
+    if (shader->source.type.fragment == FS_DIFFUSE) {
+	uint32_t diffuse;
+
+	diffuse =
+	    ((shader->source.solid.color.alpha_short >> 8) << 24) |
+	    ((shader->source.solid.color.red_short   >> 8) << 16) |
+	    ((shader->source.solid.color.green_short >> 8) << 8) |
+	    ((shader->source.solid.color.blue_short  >> 8) << 0);
+
+	if (diffuse != device->current_diffuse) {
+	    OUT_DWORD (_3DSTATE_DFLT_DIFFUSE_CMD);
+	    OUT_DWORD (diffuse);
+	    device->current_diffuse = diffuse;
+	}
+    } else {
+	n_constants += pack_constants (&shader->source, constants + n_constants);
+    }
+    n_constants += pack_constants (&shader->mask, constants + n_constants);
+
+    if (shader->opacity < 1.) {
+	constants[n_constants+0] =
+	    constants[n_constants+1] =
+	    constants[n_constants+2] =
+	    constants[n_constants+3] = pack_float (shader->opacity);
+	n_constants += 4;
+    }
+
+    if (n_constants != 0 &&
+	(device->current_n_constants != n_constants ||
+	 memcmp (device->current_constants, constants, n_constants*4)))
+    {
+	i915_set_constants (device, constants, n_constants);
+    }
+}
+
+static cairo_bool_t
+i915_shader_needs_update (const i915_shader_t *shader,
+			  const i915_device_t *device)
+{
+    uint32_t count, n;
+    uint32_t buf[64];
+
+    if (device->current_target != shader->target)
+	return TRUE;
+
+    count =
+	!! shader->source.base.bo +
+	!! shader->mask.base.bo +
+	!! shader->clip.base.bo +
+	!! shader->dst.base.bo;
+    if (count > device->current_n_samplers)
+	return TRUE;
+
+    count =
+	shader->source.base.n_samplers +
+	shader->mask.base.n_samplers +
+	shader->clip.base.n_samplers +
+	shader->dst.base.n_samplers;
+    if (count > device->current_n_maps)
+	return TRUE;
+
+    if (count) {
+	count = 0;
+	if (shader->source.base.bo != NULL) {
+	    buf[count++] = shader->source.base.sampler[0];
+	    buf[count++] = shader->source.base.sampler[1];
+	}
+	if (shader->mask.base.bo != NULL) {
+	    buf[count++] = shader->mask.base.sampler[0];
+	    buf[count++] = shader->mask.base.sampler[1];
+	}
+	if (shader->clip.base.bo != NULL) {
+	    buf[count++] = shader->clip.base.sampler[0];
+	    buf[count++] = shader->clip.base.sampler[1];
+	}
+	if (shader->dst.base.bo != NULL) {
+	    buf[count++] = shader->dst.base.sampler[0];
+	    buf[count++] = shader->dst.base.sampler[1];
+	}
+	if (memcmp (device->current_samplers, buf, count * sizeof (uint32_t)))
+	    return TRUE;
+
+	count = 0;
+	if (shader->source.base.bo != NULL) {
+	    buf[count++] = shader->source.base.bo->base.handle;
+	    for (n = 0; n < shader->source.base.n_samplers; n++) {
+		buf[count++] = shader->source.base.offset[n];
+		buf[count++] = shader->source.base.map[2*n+0];
+		buf[count++] = shader->source.base.map[2*n+1];
+	    }
+	}
+	if (shader->mask.base.bo != NULL) {
+	    buf[count++] = shader->mask.base.bo->base.handle;
+	    for (n = 0; n < shader->mask.base.n_samplers; n++) {
+		buf[count++] = shader->mask.base.offset[n];
+		buf[count++] = shader->mask.base.map[2*n+0];
+		buf[count++] = shader->mask.base.map[2*n+1];
+	    }
+	}
+	if (shader->clip.base.bo != NULL) {
+	    buf[count++] = shader->clip.base.bo->base.handle;
+	    for (n = 0; n < shader->clip.base.n_samplers; n++) {
+		buf[count++] = shader->clip.base.offset[n];
+		buf[count++] = shader->clip.base.map[2*n+0];
+		buf[count++] = shader->clip.base.map[2*n+1];
+	    }
+	}
+	if (shader->dst.base.bo != NULL) {
+	    buf[count++] = shader->dst.base.bo->base.handle;
+	    for (n = 0; n < shader->dst.base.n_samplers; n++) {
+		buf[count++] = shader->dst.base.offset[n];
+		buf[count++] = shader->dst.base.map[2*n+0];
+		buf[count++] = shader->dst.base.map[2*n+1];
+	    }
+	}
+	if (memcmp (device->current_maps, buf, count * sizeof (uint32_t)))
+	    return TRUE;
+    }
+
+    if (i915_shader_get_texcoords (shader) != device->current_texcoords)
+	return TRUE;
+    if (device->current_blend != shader->blend)
+	return TRUE;
+
+    count = 0;
+    if (shader->source.type.fragment == FS_DIFFUSE) {
+	uint32_t diffuse;
+
+	diffuse =
+	    ((shader->source.solid.color.alpha_short >> 8) << 24) |
+	    ((shader->source.solid.color.red_short   >> 8) << 16) |
+	    ((shader->source.solid.color.green_short >> 8) << 8) |
+	    ((shader->source.solid.color.blue_short  >> 8) << 0);
+
+	if (diffuse != device->current_diffuse)
+	    return TRUE;
+    } else {
+	count += pack_constants (&shader->source, buf + count);
+    }
+    count += pack_constants (&shader->mask, buf + count);
+
+    if (count &&
+	(device->current_n_constants != count ||
+	 memcmp (device->current_constants, buf, count*4)))
+    {
+	return TRUE;
+    }
+
+    n = (i915_shader_channel_key (&shader->source) <<  0) |
+	(i915_shader_channel_key (&shader->mask)   <<  8) |
+	(i915_shader_channel_key (&shader->clip)   << 16) |
+	(shader->op << 24) |
+	((shader->opacity < 1.) << 30) |
+	(((shader->content & CAIRO_CONTENT_ALPHA) == CAIRO_CONTENT_ALPHA) << 31);
+    return n != device->current_program;
+}
+
+void
+i915_set_dst (i915_device_t *device, i915_surface_t *dst)
+{
+    uint32_t size;
+
+    if (device->current_target != dst) {
+	intel_bo_t *bo;
+
+	bo = to_intel_bo (dst->intel.drm.bo);
+	assert (bo != NULL);
+
+	OUT_DWORD (_3DSTATE_BUF_INFO_CMD);
+	OUT_DWORD (BUF_3D_ID_COLOR_BACK |
+		   BUF_tiling (bo->tiling) |
+		   BUF_3D_PITCH (dst->intel.drm.stride));
+	OUT_RELOC (dst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
+
+	device->current_target = dst;
+    }
+
+    if (dst->colorbuf != device->current_colorbuf) {
+	OUT_DWORD (_3DSTATE_DST_BUF_VARS_CMD);
+	OUT_DWORD (dst->colorbuf);
+	device->current_colorbuf = dst->colorbuf;
+    }
+
+    size = DRAW_YMAX (dst->intel.drm.height) | DRAW_XMAX (dst->intel.drm.width);
+    if (size != device->current_size) {
+	OUT_DWORD (_3DSTATE_DRAW_RECT_CMD);
+	OUT_DWORD (0); /* dither */
+	OUT_DWORD (0); /* top-left */
+	OUT_DWORD (size);
+	OUT_DWORD (0);  /* origin */
+	device->current_size = size;
+    }
+}
+
+static void
+i915_set_shader_target (i915_device_t *device,
+		        const i915_shader_t *shader)
+{
+    i915_set_dst (device, shader->target);
+}
+
+int
+i915_shader_num_texcoords (const i915_shader_t *shader)
+{
+    int cnt = 0;
+
+    switch (shader->source.base.texfmt) {
+    default:
+	ASSERT_NOT_REACHED;
+    case TEXCOORDFMT_NOT_PRESENT: break;
+    case TEXCOORDFMT_2D: cnt += 2; break;
+    case TEXCOORDFMT_3D: cnt += 3; break;
+    case TEXCOORDFMT_4D: cnt += 4; break;
+    case TEXCOORDFMT_1D: cnt += 1; break;
+    case TEXCOORDFMT_2D_16: cnt += 1; break;
+    }
+
+    switch (shader->mask.base.texfmt) {
+    default:
+	ASSERT_NOT_REACHED;
+    case TEXCOORDFMT_NOT_PRESENT: break;
+    case TEXCOORDFMT_2D: cnt += 2; break;
+    case TEXCOORDFMT_3D: cnt += 3; break;
+    case TEXCOORDFMT_4D: cnt += 4; break;
+    case TEXCOORDFMT_1D: cnt += 1; break;
+    case TEXCOORDFMT_2D_16: cnt += 1; break;
+    }
+
+    switch (shader->clip.base.texfmt) {
+    default:
+	ASSERT_NOT_REACHED;
+    case TEXCOORDFMT_NOT_PRESENT: break;
+    case TEXCOORDFMT_2D: cnt += 2; break;
+    case TEXCOORDFMT_3D: cnt += 3; break;
+    case TEXCOORDFMT_4D: cnt += 4; break;
+    case TEXCOORDFMT_1D: cnt += 1; break;
+    case TEXCOORDFMT_2D_16: cnt += 1; break;
+    }
+
+    switch (shader->dst.base.texfmt) {
+    default:
+	ASSERT_NOT_REACHED;
+    case TEXCOORDFMT_NOT_PRESENT: break;
+    case TEXCOORDFMT_2D: cnt += 2; break;
+    case TEXCOORDFMT_3D: cnt += 3; break;
+    case TEXCOORDFMT_4D: cnt += 4; break;
+    case TEXCOORDFMT_1D: cnt += 1; break;
+    case TEXCOORDFMT_2D_16: cnt += 1; break;
+    }
+
+    return cnt;
+}
+
+void
+i915_shader_fini (i915_shader_t *shader)
+{
+    i915_device_t *device = i915_device (shader->target);
+
+    i915_shader_channel_fini (device, &shader->source);
+    i915_shader_channel_fini (device, &shader->mask);
+    i915_shader_channel_fini (device, &shader->clip);
+}
+
+void
+i915_shader_set_clip (i915_shader_t *shader,
+		      cairo_clip_t *clip)
+{
+    cairo_surface_t *clip_surface;
+    int clip_x, clip_y;
+    union i915_shader_channel *channel;
+    i915_surface_t *s;
+
+    clip_surface = _cairo_clip_get_surface (clip, &shader->target->intel.drm.base, &clip_x, &clip_y);
+    assert (clip_surface->status == CAIRO_STATUS_SUCCESS);
+    assert (clip_surface->type == CAIRO_SURFACE_TYPE_DRM);
+
+    channel = &shader->clip;
+    channel->type.vertex = VS_TEXTURE_16;
+    channel->base.texfmt = TEXCOORDFMT_2D_16;
+    channel->base.content = CAIRO_CONTENT_ALPHA;
+
+    channel->type.fragment = FS_TEXTURE;
+    channel->surface.pixel = NONE;
+
+    s = (i915_surface_t *) clip_surface;
+    channel->base.bo = to_intel_bo (s->intel.drm.bo);
+    channel->base.n_samplers = 1;
+    channel->base.offset[0] = s->offset;
+    channel->base.map[0] = s->map0;
+    channel->base.map[1] = s->map1;
+
+    channel->base.sampler[0] =
+	(MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	i915_texture_filter (CAIRO_FILTER_NEAREST);
+    channel->base.sampler[1] =
+	SS3_NORMALIZED_COORDS |
+	i915_texture_extend (CAIRO_EXTEND_NONE);
+
+    cairo_matrix_init_scale (&shader->clip.base.matrix,
+			     1. / s->intel.drm.width,
+			     1. / s->intel.drm.height);
+    cairo_matrix_translate (&shader->clip.base.matrix,
+			    -clip_x, -clip_y);
+}
+
+static cairo_status_t
+i915_shader_check_aperture (i915_shader_t *shader,
+			    i915_device_t *device)
+{
+    cairo_status_t status;
+    intel_bo_t *bo_array[4];
+    uint32_t n = 0;
+
+    if (shader->target != device->current_target)
+	bo_array[n++] = to_intel_bo (shader->target->intel.drm.bo);
+
+    if (shader->source.base.bo != NULL)
+	bo_array[n++] = shader->source.base.bo;
+
+    if (shader->mask.base.bo != NULL)
+	bo_array[n++] = shader->mask.base.bo;
+
+    if (shader->clip.base.bo != NULL)
+	bo_array[n++] = shader->clip.base.bo;
+
+    if (n == 0 || i915_check_aperture (device, bo_array, n))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = i915_batch_flush (device);
+    if (unlikely (status))
+	return status;
+
+    assert (i915_check_aperture (device, bo_array, n));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+i915_shader_combine_mask (i915_shader_t *shader, i915_device_t *device)
+{
+    if (shader->mask.type.fragment == (i915_fragment_shader_t) -1 ||
+	shader->mask.type.fragment == FS_CONSTANT)
+    {
+	return;
+    }
+
+    if (shader->mask.type.fragment == FS_PURE) {
+	if (shader->mask.solid.pure & (1<<3)) {
+	    shader->mask.type.fragment = FS_ONE;
+	} else {
+	    shader->mask.type.fragment = FS_ZERO;
+	}
+    }
+
+    if (shader->mask.type.fragment == FS_ONE ||
+	(shader->mask.base.content & CAIRO_CONTENT_ALPHA) == 0)
+    {
+	i915_shader_channel_reset (device, &shader->mask);
+    }
+
+    if (shader->mask.type.fragment == FS_ZERO) {
+	i915_shader_channel_fini (device, &shader->source);
+
+	shader->source.type.fragment = FS_ZERO;
+	shader->source.type.vertex = VS_ZERO;
+	shader->source.base.texfmt = TEXCOORDFMT_NOT_PRESENT;
+	shader->source.base.mode = 0;
+	shader->source.base.n_samplers = 0;
+    }
+
+    if (shader->source.type.fragment == FS_ZERO) {
+	i915_shader_channel_reset (device, &shader->mask);
+	i915_shader_channel_reset (device, &shader->clip);
+    }
+}
+
+static void
+i915_shader_setup_dst (i915_shader_t *shader)
+{
+    union i915_shader_channel *channel;
+    i915_surface_t *s;
+
+    /* We need to manual blending if we have a clip surface and an unbounded op,
+     * or an extended blend mode.
+     */
+    if (shader->need_combine ||
+	(shader->op < CAIRO_OPERATOR_SATURATE &&
+	 (shader->clip.type.fragment == (i915_fragment_shader_t) -1 ||
+	  _cairo_operator_bounded_by_mask (shader->op))))
+    {
+	return;
+    }
+
+    shader->need_combine = TRUE;
+
+    channel = &shader->dst;
+    channel->type.vertex = VS_TEXTURE_16;
+    channel->base.texfmt = TEXCOORDFMT_2D_16;
+    channel->base.content = shader->content;
+
+    channel->type.fragment = FS_TEXTURE;
+    channel->surface.pixel = NONE;
+
+    s = shader->target;
+    channel->base.bo = to_intel_bo (s->intel.drm.bo);
+    channel->base.n_samplers = 1;
+    channel->base.offset[0] = s->offset;
+    channel->base.map[0] = s->map0;
+    channel->base.map[1] = s->map1;
+
+    channel->base.sampler[0] =
+	(MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+	i915_texture_filter (CAIRO_FILTER_NEAREST);
+    channel->base.sampler[1] =
+	SS3_NORMALIZED_COORDS |
+	i915_texture_extend (CAIRO_EXTEND_NONE);
+
+    cairo_matrix_init_scale (&shader->dst.base.matrix,
+			     1. / s->intel.drm.width,
+			     1. / s->intel.drm.height);
+}
+
+static void
+i915_shader_combine_source (i915_shader_t *shader,
+			    i915_device_t *device)
+{
+    if (device->last_source_fragment == shader->source.type.fragment)
+	return;
+
+    if (device->last_source_fragment == FS_DIFFUSE) {
+	switch (shader->source.type.fragment) {
+	case FS_ONE:
+	case FS_PURE:
+	case FS_CONSTANT:
+	case FS_DIFFUSE:
+	    shader->source.type.fragment = FS_DIFFUSE;
+	    shader->source.base.mode = 0;
+	    break;
+	case FS_ZERO:
+	case FS_LINEAR:
+	case FS_RADIAL:
+	case FS_TEXTURE:
+	case FS_YUV:
+	case FS_SPANS:
+	default:
+	    break;
+	}
+    }
+
+    device->last_source_fragment = shader->source.type.fragment;
+}
+
+static inline float *
+i915_composite_vertex (float *v,
+		       const i915_shader_t *shader,
+		       double x, double y)
+{
+    double s, t;
+
+    /* Each vertex is:
+     *   2 vertex coordinates
+     *   [0-2] source texture coordinates
+     *   [0-2] mask texture coordinates
+     */
+
+    *v++ = x; *v++ = y;
+    switch (shader->source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*v++ = i915_shader_linear_texcoord (&shader->source.linear, x, y);
+	break;
+    case VS_TEXTURE:
+	s = x, t = y;
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = s; *v++ = t;
+	break;
+    case VS_TEXTURE_16:
+	s = x, t = y;
+	cairo_matrix_transform_point (&shader->source.base.matrix, &s, &t);
+	*v++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    switch (shader->mask.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*v++ = i915_shader_linear_texcoord (&shader->mask.linear, x, y);
+	break;
+    case VS_TEXTURE:
+	s = x, t = y;
+	cairo_matrix_transform_point (&shader->mask.base.matrix, &s, &t);
+	*v++ = s; *v++ = t;
+	break;
+    case VS_TEXTURE_16:
+	s = x, t = y;
+	cairo_matrix_transform_point (&shader->mask.base.matrix, &s, &t);
+	*v++ = texcoord_2d_16 (s, t);
+	break;
+    }
+
+    return v;
+}
+
+static inline void
+i915_shader_add_rectangle_general (const i915_shader_t *shader,
+				   int x, int y,
+				   int w, int h)
+{
+    float *vertices;
+
+    vertices = i915_add_rectangle (shader->device);
+    vertices = i915_composite_vertex (vertices, shader, x + w, y + h);
+    vertices = i915_composite_vertex (vertices, shader, x, y + h);
+    vertices = i915_composite_vertex (vertices, shader, x, y);
+    /* XXX overflow! */
+}
+
+void
+i915_vbo_flush (i915_device_t *device)
+{
+    assert (device->floats_per_vertex);
+    assert (device->vertex_count);
+
+    if (device->vbo == 0) {
+	OUT_DWORD (_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
+		   I1_LOAD_S (0) |
+		   I1_LOAD_S (1) |
+		   1);
+	device->vbo = device->batch.used++;
+	device->vbo_max_index = device->batch.used;
+	OUT_DWORD ((device->floats_per_vertex << S1_VERTEX_WIDTH_SHIFT) |
+		   (device->floats_per_vertex << S1_VERTEX_PITCH_SHIFT));
+    }
+
+    OUT_DWORD (PRIM3D_RECTLIST |
+	       PRIM3D_INDIRECT_SEQUENTIAL |
+	       device->vertex_count);
+    OUT_DWORD (device->vertex_index);
+
+    device->vertex_index += device->vertex_count;
+    device->vertex_count = 0;
+}
+
+cairo_status_t
+i915_shader_commit (i915_shader_t *shader,
+		    i915_device_t *device)
+{
+    unsigned floats_per_vertex;
+    cairo_status_t status;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (device->intel.base.base.mutex));
+
+    if (! shader->committed) {
+	device->shader = shader;
+
+	i915_shader_combine_mask (shader, device);
+	i915_shader_combine_source (shader, device);
+	i915_shader_setup_dst (shader);
+
+	shader->add_rectangle = i915_shader_add_rectangle_general;
+
+	if ((status = setjmp (shader->unwind)))
+	    return status;
+
+	shader->committed = TRUE;
+    }
+
+    if (i915_shader_needs_update (shader, device)) {
+	if (i915_batch_space (device) < 256) {
+	    status = i915_batch_flush (device);
+	    if (unlikely (status))
+		return status;
+	}
+
+	if (device->vertex_count)
+	    i915_vbo_flush (device);
+
+	status = i915_shader_check_aperture (shader, device);
+	if (unlikely (status))
+	    return status;
+
+  update_shader:
+	i915_set_shader_target (device, shader);
+	i915_set_shader_mode (device, shader);
+	i915_set_shader_samplers (device, shader);
+	i915_set_shader_constants (device, shader);
+	i915_set_shader_program (device, shader);
+    }
+
+    floats_per_vertex = 2 + i915_shader_num_texcoords (shader);
+    if (device->floats_per_vertex == floats_per_vertex)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (i915_batch_space (device) < 8) {
+	status = i915_batch_flush (device);
+	if (unlikely (status))
+	    return status;
+
+	goto update_shader;
+    }
+
+    if (device->vertex_count)
+	i915_vbo_flush (device);
+
+    if (device->vbo) {
+	device->batch_base[device->vbo_max_index] |= device->vertex_index;
+	OUT_DWORD (_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S (1) | 0);
+	device->vbo_max_index = device->batch.used;
+	OUT_DWORD ((floats_per_vertex << S1_VERTEX_WIDTH_SHIFT) |
+		   (floats_per_vertex << S1_VERTEX_PITCH_SHIFT));
+    }
+
+    device->floats_per_vertex = floats_per_vertex;
+    device->rectangle_size = floats_per_vertex * 3 * sizeof (float);
+    device->vertex_index =
+	(device->vbo_used + 4*floats_per_vertex - 1) / (4 * floats_per_vertex);
+    device->vbo_offset = 4 * device->vertex_index * floats_per_vertex;
+
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i915-spans.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-spans.c
new file mode 100644
index 0000000..f40bb2f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-spans.c
@@ -0,0 +1,799 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-drm-i915-private.h"
+
+/* Operates in either immediate or retained mode.
+ * When given a clip region we record the sequence of vbo and then
+ * replay them for each clip rectangle, otherwise we simply emit
+ * the vbo straight into the command stream.
+ */
+
+typedef struct _i915_spans i915_spans_t;
+
+typedef float *
+(*i915_get_rectangle_func_t) (i915_spans_t *spans);
+
+typedef void
+(*i915_span_func_t) (i915_spans_t *spans,
+		     int x0, int x1, int y0, int y1,
+		     int alpha);
+
+struct _i915_spans {
+    cairo_span_renderer_t renderer;
+
+    i915_device_t *device;
+
+    int xmin, xmax;
+    cairo_bool_t is_bounded;
+    const cairo_rectangle_int_t *extents;
+
+    i915_get_rectangle_func_t get_rectangle;
+    i915_span_func_t span;
+    i915_shader_t shader;
+
+    cairo_region_t *clip_region;
+    cairo_bool_t need_clip_surface;
+
+    struct vbo {
+	struct vbo *next;
+	intel_bo_t *bo;
+	unsigned int count;
+    } head, *tail;
+
+    unsigned int vbo_offset;
+    float *vbo_base;
+};
+
+static float *
+i915_emit_rectangle (i915_spans_t *spans)
+{
+    return i915_add_rectangle (spans->device);
+}
+
+static float *
+i915_accumulate_rectangle (i915_spans_t *spans)
+{
+    float *vertices;
+    uint32_t size;
+
+    size = spans->device->rectangle_size;
+    if (unlikely (spans->vbo_offset + size > I915_VBO_SIZE)) {
+	struct vbo *vbo;
+
+	vbo = _cairo_malloc (sizeof (struct vbo));
+	if (unlikely (vbo == NULL)) {
+	    /* throw error! */
+	}
+
+	spans->tail->next = vbo;
+	spans->tail = vbo;
+
+	vbo->next = NULL;
+	vbo->bo = intel_bo_create (&spans->device->intel,
+				   I915_VBO_SIZE, I915_VBO_SIZE,
+				   FALSE, I915_TILING_NONE, 0);
+	vbo->count = 0;
+
+	spans->vbo_offset = 0;
+	spans->vbo_base = intel_bo_map (&spans->device->intel, vbo->bo);
+    }
+
+    vertices = spans->vbo_base + spans->vbo_offset;
+    spans->vbo_offset += size;
+    spans->tail->count += 3;
+
+    return vertices;
+}
+
+static void
+i915_span_zero (i915_spans_t *spans,
+		int x0, int x1, int y0, int y1,
+		int alpha)
+{
+    float *vertices;
+
+    vertices = spans->get_rectangle (spans);
+
+    *vertices++ = x1;
+    *vertices++ = y1;
+
+    *vertices++ = x0;
+    *vertices++ = y1;
+
+    *vertices++ = x0;
+    *vertices++ = y0;
+}
+
+static void
+i915_span_constant (i915_spans_t *spans,
+		    int x0, int x1, int y0, int y1,
+		    int alpha)
+{
+    float *vertices;
+    float a = alpha / 255.;
+
+    vertices = spans->get_rectangle (spans);
+
+    *vertices++ = x1;
+    *vertices++ = y1;
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y1;
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y0;
+    *vertices++ = a;
+}
+
+static void
+i915_span_linear (i915_spans_t *spans,
+		  int x0, int x1, int y0, int y1,
+		  int alpha)
+{
+    float *vertices;
+    float a = alpha / 255.;
+    double s, t;
+
+    vertices = spans->get_rectangle (spans);
+
+    *vertices++ = x1;
+    *vertices++ = y1;
+    s = x0, t = y0;
+    *vertices++ = i915_shader_linear_texcoord (&spans->shader.source.linear, s, t);
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y1;
+    s = x1, t = y0;
+    *vertices++ = i915_shader_linear_texcoord (&spans->shader.source.linear, s, t);
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y0;
+    s = x1, t = y1;
+    *vertices++ = i915_shader_linear_texcoord (&spans->shader.source.linear, s, t);
+    *vertices++ = a;
+}
+
+static void
+i915_span_texture (i915_spans_t *spans,
+		   int x0, int x1, int y0, int y1,
+		   int alpha)
+{
+    float *vertices;
+    float a = alpha / 255.;
+    double s, t;
+
+    vertices = spans->get_rectangle (spans);
+
+    *vertices++ = x1;
+    *vertices++ = y1;
+    s = x0, t = y0;
+    cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+    *vertices++ = s; *vertices++ = t;
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y1;
+    s = x1, t = y0;
+    cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+    *vertices++ = s; *vertices++ = t;
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y0;
+    s = x1, t = y1;
+    cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+    *vertices++ = s; *vertices++ = t;
+    *vertices++ = a;
+}
+
+static void
+i915_span_texture16 (i915_spans_t *spans,
+		     int x0, int x1, int y0, int y1, int alpha)
+{
+    float *vertices;
+    float a = alpha / 255.;
+    double s, t;
+
+    vertices = spans->get_rectangle (spans);
+
+    *vertices++ = x1;
+    *vertices++ = y1;
+    s = x0, t = y0;
+    cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+    *vertices++ = texcoord_2d_16 (s, t);
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y1;
+    s = x1, t = y0;
+    cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+    *vertices++ = texcoord_2d_16 (s, t);
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y0;
+    s = x1, t = y1;
+    cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+    *vertices++ = texcoord_2d_16 (s, t);
+    *vertices++ = a;
+}
+
+static void
+i915_span_generic (i915_spans_t *spans,
+		   int x0, int x1, int y0, int y1, int alpha)
+{
+    double s, t;
+    float *vertices;
+    float a = alpha / 255.;
+
+    /* Each vertex is:
+     *   2 vertex coordinates
+     *   [0-2] source texture coordinates
+     *   1 alpha value.
+     *   [0,2] clip mask coordinates
+     */
+
+    vertices = spans->get_rectangle (spans);
+
+    /* bottom right */
+    *vertices++ = x1; *vertices++ = y1;
+    s = x1, t = y1;
+    switch (spans->shader.source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*vertices++ = i915_shader_linear_texcoord (&spans->shader.source.linear, s, t);
+	break;
+    case VS_TEXTURE:
+	cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+	*vertices++ = s; *vertices++ = t;
+	break;
+    case VS_TEXTURE_16:
+	cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    *vertices++ = a;
+    if (spans->need_clip_surface) {
+	s = x1, t = y1;
+	cairo_matrix_transform_point (&spans->shader.clip.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+    }
+    if (spans->shader.need_combine) {
+	s = x1, t = y1;
+	cairo_matrix_transform_point (&spans->shader.dst.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+    }
+
+    /* bottom left */
+    *vertices++ = x0; *vertices++ = y1;
+    s = x0, t = y1;
+    switch (spans->shader.source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*vertices++ = i915_shader_linear_texcoord (&spans->shader.source.linear, s, t);
+	break;
+    case VS_TEXTURE:
+	cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+	*vertices++ = s; *vertices++ = t;
+	break;
+    case VS_TEXTURE_16:
+	cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    *vertices++ = a;
+    if (spans->need_clip_surface) {
+	s = x0, t = y1;
+	cairo_matrix_transform_point (&spans->shader.clip.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+    }
+    if (spans->shader.need_combine) {
+	s = x0, t = y1;
+	cairo_matrix_transform_point (&spans->shader.dst.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+    }
+
+    /* top left */
+    *vertices++ = x0; *vertices++ = y0;
+    s = x0, t = y0;
+    switch (spans->shader.source.type.vertex) {
+    case VS_ZERO:
+    case VS_CONSTANT:
+	break;
+    case VS_LINEAR:
+	*vertices++ = i915_shader_linear_texcoord (&spans->shader.source.linear, s, t);
+	break;
+    case VS_TEXTURE:
+	cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+	*vertices++ = s; *vertices++ = t;
+	break;
+    case VS_TEXTURE_16:
+	cairo_matrix_transform_point (&spans->shader.source.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+	break;
+    }
+    *vertices++ = a;
+    if (spans->need_clip_surface) {
+	s = x0, t = y0;
+	cairo_matrix_transform_point (&spans->shader.clip.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+    }
+    if (spans->shader.need_combine) {
+	s = x0, t = y0;
+	cairo_matrix_transform_point (&spans->shader.dst.base.matrix, &s, &t);
+	*vertices++ = texcoord_2d_16 (s, t);
+    }
+}
+
+static cairo_status_t
+i915_zero_spans_mono (void *abstract_renderer,
+		      int y, int height,
+		      const cairo_half_open_span_t *half,
+		      unsigned num_spans)
+{
+    i915_spans_t *spans = abstract_renderer;
+    int x0, x1;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	while (num_spans && half[0].coverage < 128)
+	    half++, num_spans--;
+	if (num_spans == 0)
+	    break;
+
+	x0 = x1 = half[0].x;
+	while (num_spans--) {
+	    half++;
+
+	    x1 = half[0].x;
+	    if (half[0].coverage < 128)
+		break;
+	}
+
+	i915_span_zero (spans,
+			x0, x1,
+			y, y + height,
+			0);
+    } while (num_spans);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_zero_spans (void *abstract_renderer,
+		 int y, int height,
+		 const cairo_half_open_span_t *half,
+		 unsigned num_spans)
+{
+    i915_spans_t *spans = abstract_renderer;
+    int x0, x1;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	while (num_spans && half[0].coverage == 0)
+	    half++, num_spans--;
+	if (num_spans == 0)
+	    break;
+
+	x0 = x1 = half[0].x;
+	while (num_spans--) {
+	    half++;
+
+	    x1 = half[0].x;
+	    if (half[0].coverage == 0)
+		break;
+	}
+
+	i915_span_zero (spans,
+			x0, x1,
+			y, y + height,
+			0);
+    } while (num_spans);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_bounded_spans_mono (void *abstract_renderer,
+			 int y, int height,
+			 const cairo_half_open_span_t *half,
+			 unsigned num_spans)
+{
+    i915_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (half[0].coverage >= 128) {
+	    spans->span (spans,
+			 half[0].x, half[1].x,
+			 y, y + height,
+			 255);
+	}
+	half++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_bounded_spans (void *abstract_renderer,
+		    int y, int height,
+		    const cairo_half_open_span_t *half,
+		    unsigned num_spans)
+{
+    i915_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (half[0].coverage) {
+	    spans->span (spans,
+			 half[0].x, half[1].x,
+			 y, y + height,
+			 half[0].coverage);
+	}
+	half++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_unbounded_spans (void *abstract_renderer,
+		      int y, int height,
+		      const cairo_half_open_span_t *half,
+		      unsigned num_spans)
+{
+    i915_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0) {
+	spans->span (spans,
+		     spans->xmin, spans->xmax,
+		     y, y + height,
+		     0);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (half[0].x != spans->xmin) {
+	spans->span (spans,
+		     spans->xmin, half[0].x,
+		     y, y + height,
+		     0);
+    }
+
+    do {
+	spans->span (spans,
+		     half[0].x, half[1].x,
+		     y, y + height,
+		     half[0].coverage);
+	half++;
+    } while (--num_spans > 1);
+
+    if (half[0].x != spans->xmax) {
+	spans->span (spans,
+		     half[0].x, spans->xmax,
+		     y, y + height,
+		     0);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_unbounded_spans_mono (void *abstract_renderer,
+			   int y, int height,
+			   const cairo_half_open_span_t *half,
+			   unsigned num_spans)
+{
+    i915_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0) {
+	spans->span (spans,
+		     spans->xmin, spans->xmax,
+		     y, y + height,
+		     0);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (half[0].x != spans->xmin) {
+	spans->span (spans,
+		     spans->xmin, half[0].x,
+		     y, y + height,
+		     0);
+    }
+
+    do {
+	int alpha = 0;
+	if (half[0].coverage >= 128)
+	    alpha = 255;
+	spans->span (spans,
+		     half[0].x, half[1].x,
+		     y, y + height,
+		     alpha);
+	half++;
+    } while (--num_spans > 1);
+
+    if (half[0].x != spans->xmax) {
+	spans->span (spans,
+		     half[0].x, spans->xmax,
+		     y, y + height,
+		     0);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_spans_init (i915_spans_t *spans,
+		 i915_surface_t *dst,
+		 cairo_operator_t op,
+		 const cairo_pattern_t *pattern,
+		 cairo_antialias_t antialias,
+		 cairo_clip_t *clip,
+		 double opacity,
+		 const cairo_composite_rectangles_t *extents)
+{
+    cairo_status_t status;
+
+    spans->device = (i915_device_t *) dst->intel.drm.base.device;
+
+    spans->is_bounded = extents->is_bounded;
+    if (extents->is_bounded) {
+	if (antialias == CAIRO_ANTIALIAS_NONE)
+	    spans->renderer.render_rows = i915_bounded_spans_mono;
+	else
+	    spans->renderer.render_rows = i915_bounded_spans;
+
+	spans->extents = &extents->bounded;
+    } else {
+	if (antialias == CAIRO_ANTIALIAS_NONE)
+	    spans->renderer.render_rows = i915_unbounded_spans_mono;
+	else
+	    spans->renderer.render_rows = i915_unbounded_spans;
+
+	spans->extents = &extents->unbounded;
+    }
+    spans->xmin = spans->extents->x;
+    spans->xmax = spans->extents->x + spans->extents->width;
+
+    spans->clip_region = NULL;
+    spans->need_clip_surface = FALSE;
+    if (clip != NULL) {
+	cairo_region_t *clip_region = NULL;
+
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+	if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1)
+	    clip_region = NULL;
+
+	spans->clip_region = clip_region;
+	spans->need_clip_surface = status == CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    spans->head.next = NULL;
+    spans->head.bo = NULL;
+    spans->head.count = 0;
+    spans->tail = &spans->head;
+
+    if (spans->clip_region == NULL) {
+	spans->get_rectangle = i915_emit_rectangle;
+    } else {
+	assert (! extents->is_bounded);
+	spans->get_rectangle = i915_accumulate_rectangle;
+	spans->head.bo = intel_bo_create (&spans->device->intel,
+					  I915_VBO_SIZE, I915_VBO_SIZE,
+					  FALSE, I915_TILING_NONE, 0);
+	if (unlikely (spans->head.bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	spans->vbo_base = intel_bo_map (&spans->device->intel, spans->head.bo);
+    }
+    spans->vbo_offset = 0;
+
+    i915_shader_init (&spans->shader, dst, op, opacity);
+    if (spans->need_clip_surface)
+	i915_shader_set_clip (&spans->shader, clip);
+
+    status = i915_shader_acquire_pattern (&spans->shader, &spans->shader.source,
+					  pattern, &extents->bounded);
+    if (unlikely (status))
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+i915_spans_fini (i915_spans_t *spans)
+{
+    i915_shader_fini (&spans->shader);
+
+    if (spans->head.bo != NULL) {
+	struct vbo *vbo, *next;
+
+	intel_bo_destroy (&spans->device->intel, spans->head.bo);
+	for (vbo = spans->head.next; vbo != NULL; vbo = next) {
+	    next = vbo->next;
+	    intel_bo_destroy (&spans->device->intel, vbo->bo);
+	    free (vbo);
+	}
+    }
+}
+
+cairo_status_t
+i915_clip_and_composite_spans (i915_surface_t		*dst,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*pattern,
+			       cairo_antialias_t	 antialias,
+			       i915_spans_func_t	 draw_func,
+			       void			*draw_closure,
+			       const cairo_composite_rectangles_t*extents,
+			       cairo_clip_t		*clip,
+			       double opacity)
+{
+    i915_spans_t spans;
+    i915_device_t *device;
+    cairo_status_t status;
+    struct vbo *vbo;
+
+    if (i915_surface_needs_tiling (dst)) {
+	ASSERT_NOT_REACHED;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	pattern = &_cairo_pattern_white.base;
+	op = CAIRO_OPERATOR_DEST_OUT;
+    }
+
+    status = i915_spans_init (&spans, dst, op, pattern, antialias, clip, opacity, extents);
+    if (unlikely (status))
+	return status;
+
+    spans.shader.mask.base.texfmt = TEXCOORDFMT_1D;
+    spans.shader.mask.base.content = CAIRO_CONTENT_ALPHA;
+    spans.shader.mask.type.fragment = FS_SPANS;
+
+    status = cairo_device_acquire (dst->intel.drm.base.device);
+    if (unlikely (status))
+	goto CLEANUP_SPANS;
+
+    if (dst->deferred_clear) {
+	status = i915_surface_clear (dst);
+	if (unlikely (status))
+	    goto CLEANUP_SPANS;
+    }
+
+    device = i915_device (dst);
+    status = i915_shader_commit (&spans.shader, device);
+    if (unlikely (status))
+	goto CLEANUP_DEVICE;
+
+    if (! spans.shader.need_combine && ! spans.need_clip_surface) {
+	switch (spans.shader.source.type.vertex) {
+	case VS_ZERO:
+	    spans.span = i915_span_zero;
+	    if (extents->is_bounded) {
+		if (antialias == CAIRO_ANTIALIAS_NONE)
+		    spans.renderer.render_rows = i915_zero_spans_mono;
+		else
+		    spans.renderer.render_rows = i915_zero_spans;
+	    }
+	    break;
+	case VS_CONSTANT:
+	    spans.span = i915_span_constant;
+	    break;
+	case VS_LINEAR:
+	    spans.span = i915_span_linear;
+	    break;
+	case VS_TEXTURE:
+	    spans.span = i915_span_texture;
+	    break;
+	case VS_TEXTURE_16:
+	    spans.span = i915_span_texture16;
+	    break;
+	default:
+	    spans.span = i915_span_generic;
+	    break;
+	}
+    } else {
+	spans.span = i915_span_generic;
+    }
+
+    status = draw_func (draw_closure, &spans.renderer, spans.extents);
+    if (spans.clip_region != NULL && status == CAIRO_STATUS_SUCCESS) {
+	i915_vbo_finish (device);
+
+	OUT_DWORD (_3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT);
+	for (vbo = &spans.head; vbo != NULL; vbo = vbo->next) {
+	    int i, num_rectangles;
+
+	    /* XXX require_space & batch_flush */
+
+	    OUT_DWORD (_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S (0) | I1_LOAD_S (1) | 1);
+	    i915_batch_emit_reloc (device, vbo->bo, 0,
+				   I915_GEM_DOMAIN_VERTEX, 0,
+				   FALSE);
+	    OUT_DWORD ((device->floats_per_vertex << S1_VERTEX_WIDTH_SHIFT) |
+		       (device->floats_per_vertex << S1_VERTEX_PITCH_SHIFT) |
+		       vbo->count);
+
+	    num_rectangles = cairo_region_num_rectangles (spans.clip_region);
+	    for (i = 0; i < num_rectangles; i++) {
+		cairo_rectangle_int_t rect;
+
+		cairo_region_get_rectangle (spans.clip_region, i, &rect);
+
+		OUT_DWORD (_3DSTATE_SCISSOR_RECT_0_CMD);
+		OUT_DWORD (SCISSOR_RECT_0_XMIN (rect.x) |
+			   SCISSOR_RECT_0_YMIN (rect.y));
+		OUT_DWORD (SCISSOR_RECT_0_XMAX (rect.x + rect.width) |
+			   SCISSOR_RECT_0_YMAX (rect.y + rect.height));
+
+		OUT_DWORD (PRIM3D_RECTLIST | PRIM3D_INDIRECT_SEQUENTIAL | vbo->count);
+		OUT_DWORD (0);
+	    }
+	}
+	OUT_DWORD (_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
+    }
+
+CLEANUP_DEVICE:
+    cairo_device_release (dst->intel.drm.base.device);
+CLEANUP_SPANS:
+    i915_spans_fini (&spans);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i915-surface.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-surface.c
new file mode 100644
index 0000000..8fc5f7a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i915-surface.c
@@ -0,0 +1,2942 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * **************************************************************************
+ * This work was initially based upon xf86-video-intel/src/i915_render.c:
+ * Copyright © 2006 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Wang Zhenyu <zhenyu.z.wang@intel.com>
+ *    Eric Anholt <eric@anholt.net>
+ *
+ * **************************************************************************
+ * and also upon libdrm/intel/intel_bufmgr_gem.c:
+ * Copyright © 2007 Red Hat Inc.
+ * Copyright © 2007 Intel Corporation
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
+ *          Keith Whitwell <keithw-at-tungstengraphics-dot-com>
+ *          Eric Anholt <eric@anholt.net>
+ *          Dave Airlie <airlied@linux.ie>
+ */
+
+/* XXX
+ *
+ * - Per thread context? Would it actually avoid many locks?
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-intel-private.h"
+#include "cairo-drm-intel-command-private.h"
+#include "cairo-drm-intel-ioctl-private.h"
+#include "cairo-drm-i915-private.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-cache-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-list-private.h"
+#include "cairo-path-fixed-private.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-offset-private.h"
+#include "cairo-image-surface-private.h"
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <errno.h>
+
+static const uint32_t i915_batch_setup[] = {
+    /* Disable line anti-aliasing */
+    _3DSTATE_AA_CMD,
+
+    /* Disable independent alpha blend */
+    _3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
+	IAB_MODIFY_ENABLE |
+	IAB_MODIFY_FUNC | (BLENDFUNC_ADD << IAB_FUNC_SHIFT) |
+	IAB_MODIFY_SRC_FACTOR | (BLENDFACT_ONE << IAB_SRC_FACTOR_SHIFT) |
+	IAB_MODIFY_DST_FACTOR | (BLENDFACT_ZERO << IAB_DST_FACTOR_SHIFT),
+
+    /* Disable texture crossbar */
+    _3DSTATE_COORD_SET_BINDINGS |
+	CSB_TCB (0, 0) |
+	CSB_TCB (1, 1) |
+	CSB_TCB (2, 2) |
+	CSB_TCB (3, 3) |
+	CSB_TCB (4, 4) |
+	CSB_TCB (5, 5) |
+	CSB_TCB (6, 6) |
+	CSB_TCB (7, 7),
+
+    _3DSTATE_MODES_4_CMD | ENABLE_LOGIC_OP_FUNC | LOGIC_OP_FUNC (LOGICOP_COPY),
+
+    _3DSTATE_LOAD_STATE_IMMEDIATE_1 |
+	I1_LOAD_S (2) |
+	I1_LOAD_S (3) |
+	I1_LOAD_S (4) |
+	I1_LOAD_S (5) |
+	I1_LOAD_S (6) |
+	4,
+    S2_TEXCOORD_NONE,
+    0, /* Disable texture coordinate wrap-shortest */
+    (1 << S4_POINT_WIDTH_SHIFT) |
+	S4_LINE_WIDTH_ONE |
+	S4_FLATSHADE_ALPHA |
+	S4_FLATSHADE_FOG |
+	S4_FLATSHADE_SPECULAR |
+	S4_FLATSHADE_COLOR |
+	S4_CULLMODE_NONE |
+	S4_VFMT_XY,
+    0, /* Disable stencil buffer */
+    S6_COLOR_WRITE_ENABLE,
+
+    _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT,
+
+    /* disable indirect state */
+    _3DSTATE_LOAD_INDIRECT,
+    0,
+};
+
+static const cairo_surface_backend_t i915_surface_backend;
+
+static cairo_surface_t *
+i915_surface_create_from_cacheable_image (cairo_drm_device_t *base_dev,
+	                                   cairo_surface_t *source);
+
+static cairo_status_t
+i915_bo_exec (i915_device_t *device, intel_bo_t *bo, uint32_t offset)
+{
+    struct drm_i915_gem_execbuffer2 execbuf;
+    int ret, cnt, i;
+
+    /* Add the batch buffer to the validation list.  */
+    cnt = device->batch.exec_count;
+    if (cnt > 0 && bo->base.handle == device->batch.exec[cnt-1].handle)
+	i = cnt - 1;
+    else
+	i = device->batch.exec_count++;
+    device->batch.exec[i].handle = bo->base.handle;
+    device->batch.exec[i].relocation_count = device->batch.reloc_count;
+    device->batch.exec[i].relocs_ptr = (uintptr_t) device->batch.reloc;
+    device->batch.exec[i].alignment = 0;
+    device->batch.exec[i].offset = 0;
+    device->batch.exec[i].flags = 0;
+    device->batch.exec[i].rsvd1 = 0;
+    device->batch.exec[i].rsvd2 = 0;
+
+    execbuf.buffers_ptr = (uintptr_t) device->batch.exec;
+    execbuf.buffer_count = device->batch.exec_count;
+    execbuf.batch_start_offset = offset;
+    execbuf.batch_len = (device->batch.used << 2) + sizeof (device->batch_header);
+    execbuf.DR1 = 0;
+    execbuf.DR4 = 0;
+    execbuf.num_cliprects = 0;
+    execbuf.cliprects_ptr = 0;
+    execbuf.flags = 0;
+    execbuf.rsvd1 = 0;
+    execbuf.rsvd2 = 0;
+
+    do {
+	ret = ioctl (device->intel.base.fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf);
+    } while (ret != 0 && errno == EINTR);
+
+    if (device->debug & I915_DEBUG_SYNC && ret == 0)
+	ret = ! intel_bo_wait (&device->intel, bo);
+
+    if (0 && ret) {
+	int n, m;
+
+	fprintf (stderr, "Batch submission failed: %d\n", errno);
+	fprintf (stderr, "   relocation entries: %d/%d\n",
+		 device->batch.reloc_count, I915_MAX_RELOCS);
+	fprintf (stderr, "   gtt size: (%zd/%zd), (%zd/%zd)\n",
+		 device->batch.est_gtt_size, device->batch.gtt_avail_size,
+		 device->batch.total_gtt_size, device->intel.gtt_avail_size);
+
+	fprintf (stderr, "   buffers:\n");
+	for (n = 0; n < device->batch.exec_count; n++) {
+	    fprintf (stderr, "  exec[%d] = %d, %d/%d bytes, gtt = %qx\n",
+		    n,
+		    device->batch.exec[n].handle,
+		    n == device->batch.exec_count - 1 ? bo->base.size : device->batch.target_bo[n]->base.size,
+		    n == device->batch.exec_count - 1 ? bo->full_size : device->batch.target_bo[n]->full_size,
+		    device->batch.exec[n].offset);
+	}
+	for (n = 0; n < device->batch.reloc_count; n++) {
+	    for (m = 0; m < device->batch.exec_count; m++)
+		if (device->batch.exec[m].handle == device->batch.reloc[n].target_handle)
+		    break;
+
+	    fprintf (stderr, "  reloc[%d] = %d @ %qx -> %qx + %qx\n", n,
+		     device->batch.reloc[n].target_handle,
+		     device->batch.reloc[n].offset,
+		     (unsigned long long) device->batch.exec[m].offset,
+		     (unsigned long long) device->batch.reloc[n].delta);
+
+	    device->batch_base[(device->batch.reloc[n].offset - sizeof (device->batch_header)) / 4] =
+		device->batch.exec[m].offset + device->batch.reloc[n].delta;
+	}
+
+	intel_dump_batchbuffer (device->batch_header,
+				execbuf.batch_len,
+				device->intel.base.chip_id);
+    }
+    assert (ret == 0);
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (device->batch.exec, sizeof (device->batch.exec[0]) * i));
+
+    bo->offset = device->batch.exec[i].offset;
+    bo->busy = TRUE;
+    if (bo->virtual)
+	intel_bo_unmap (bo);
+    bo->cpu = FALSE;
+
+    while (cnt--) {
+	intel_bo_t *bo = device->batch.target_bo[cnt];
+
+	bo->offset = device->batch.exec[cnt].offset;
+	bo->exec = NULL;
+	bo->busy = TRUE;
+	bo->batch_read_domains = 0;
+	bo->batch_write_domain = 0;
+	cairo_list_del (&bo->cache_list);
+
+	if (bo->virtual)
+	    intel_bo_unmap (bo);
+	bo->cpu = FALSE;
+
+	intel_bo_destroy (&device->intel, bo);
+    }
+    assert (cairo_list_is_empty (&device->intel.bo_in_flight));
+
+    device->batch.exec_count = 0;
+    device->batch.reloc_count = 0;
+    device->batch.fences = 0;
+
+    device->batch.est_gtt_size = I915_BATCH_SIZE;
+    device->batch.total_gtt_size = I915_BATCH_SIZE;
+
+    return ret == 0 ? CAIRO_STATUS_SUCCESS : _cairo_error (CAIRO_STATUS_NO_MEMORY);
+}
+
+void
+i915_batch_add_reloc (i915_device_t *device,
+		      uint32_t pos,
+		      intel_bo_t *bo,
+		      uint32_t offset,
+		      uint32_t read_domains,
+		      uint32_t write_domain,
+		      cairo_bool_t needs_fence)
+{
+    int index;
+
+    assert (offset < bo->base.size);
+
+    if (bo->exec == NULL) {
+	device->batch.total_gtt_size += bo->base.size;
+
+	if (! bo->busy)
+	    device->batch.est_gtt_size += bo->base.size;
+
+	assert (device->batch.exec_count < ARRAY_LENGTH (device->batch.exec));
+
+	index = device->batch.exec_count++;
+	device->batch.exec[index].handle = bo->base.handle;
+	device->batch.exec[index].relocation_count = 0;
+	device->batch.exec[index].relocs_ptr = 0;
+	device->batch.exec[index].alignment = 0;
+	device->batch.exec[index].offset = 0;
+	device->batch.exec[index].flags = 0;
+	device->batch.exec[index].rsvd1 = 0;
+	device->batch.exec[index].rsvd2 = 0;
+
+	device->batch.target_bo[index] = intel_bo_reference (bo);
+
+	bo->exec = &device->batch.exec[index];
+    }
+
+    if (bo->tiling != I915_TILING_NONE) {
+	uint32_t alignment;
+
+#if 0
+	/* We presume that we will want to use a fence with X tiled objects... */
+	if (needs_fence || bo->tiling == I915_TILING_X)
+	    alignment = bo->full_size;
+	else
+	    alignment = 2*((bo->stride + 4095) & -4096);
+#else
+	alignment = bo->full_size;
+#endif
+	if (bo->exec->alignment < alignment)
+	    bo->exec->alignment = alignment;
+
+	if (needs_fence && (bo->exec->flags & EXEC_OBJECT_NEEDS_FENCE) == 0) {
+	    bo->exec->flags |= EXEC_OBJECT_NEEDS_FENCE;
+	    device->batch.fences++;
+
+	    intel_bo_set_tiling (&device->intel, bo);
+	}
+    }
+
+    assert (device->batch.reloc_count < ARRAY_LENGTH (device->batch.reloc));
+
+    index = device->batch.reloc_count++;
+    device->batch.reloc[index].offset = (pos << 2) + sizeof (device->batch_header);
+    device->batch.reloc[index].delta = offset;
+    device->batch.reloc[index].target_handle = bo->base.handle;
+    device->batch.reloc[index].read_domains = read_domains;
+    device->batch.reloc[index].write_domain = write_domain;
+    device->batch.reloc[index].presumed_offset = bo->offset;
+
+    assert (write_domain == 0 || bo->batch_write_domain == 0 || bo->batch_write_domain == write_domain);
+    bo->batch_read_domains |= read_domains;
+    bo->batch_write_domain |= write_domain;
+}
+
+void
+i915_vbo_finish (i915_device_t *device)
+{
+    intel_bo_t *vbo;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (device->intel.base.base.mutex));
+    assert (device->vbo_used);
+
+    if (device->vertex_count) {
+	if (device->vbo == 0) {
+	    OUT_DWORD (_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
+		       I1_LOAD_S (0) |
+		       I1_LOAD_S (1) |
+		       1);
+	    device->vbo = device->batch.used++;
+	    device->vbo_max_index = device->batch.used;
+	    OUT_DWORD ((device->floats_per_vertex << S1_VERTEX_WIDTH_SHIFT) |
+		       (device->floats_per_vertex << S1_VERTEX_PITCH_SHIFT));
+	}
+
+	OUT_DWORD (PRIM3D_RECTLIST |
+		   PRIM3D_INDIRECT_SEQUENTIAL |
+		   device->vertex_count);
+	OUT_DWORD (device->vertex_index);
+    }
+
+    if (device->last_vbo != NULL) {
+	intel_bo_in_flight_add (&device->intel, device->last_vbo);
+	intel_bo_destroy (&device->intel, device->last_vbo);
+    }
+
+    device->batch_base[device->vbo_max_index] |= device->vertex_index + device->vertex_count;
+
+    /* will include a few bytes of inter-array padding */
+    vbo = intel_bo_create (&device->intel,
+			   device->vbo_used, device->vbo_used,
+			   FALSE, I915_TILING_NONE, 0);
+    i915_batch_fill_reloc (device, device->vbo, vbo, 0,
+			   I915_GEM_DOMAIN_VERTEX, 0);
+    intel_bo_write (&device->intel, vbo, 0, device->vbo_used, device->vbo_base);
+    device->last_vbo = vbo;
+    device->last_vbo_offset = (device->vbo_used+7)&-8;
+    device->last_vbo_space = vbo->base.size - device->last_vbo_offset;
+
+    device->vbo = 0;
+
+    device->vbo_used = device->vbo_offset = 0;
+    device->vertex_index = device->vertex_count = 0;
+
+    if (! i915_check_aperture_size (device, 1, I915_VBO_SIZE, I915_VBO_SIZE)) {
+	cairo_status_t status;
+
+	status = i915_batch_flush (device);
+	if (unlikely (status))
+	    longjmp (device->shader->unwind, status);
+
+	status = i915_shader_commit (device->shader, device);
+	if (unlikely (status))
+	    longjmp (device->shader->unwind, status);
+    }
+}
+
+/* XXX improve state tracker/difference and flush state on vertex emission */
+static void
+i915_device_reset (i915_device_t *device)
+{
+    if (device->current_source != NULL)
+	*device->current_source = 0;
+    if (device->current_mask != NULL)
+	*device->current_mask = 0;
+    if (device->current_clip != NULL)
+	*device->current_clip = 0;
+
+    device->current_target = NULL;
+    device->current_size = 0;
+    device->current_source = NULL;
+    device->current_mask = NULL;
+    device->current_clip = NULL;
+    device->current_texcoords = ~0;
+    device->current_blend = 0;
+    device->current_n_constants = 0;
+    device->current_n_samplers = 0;
+    device->current_n_maps = 0;
+    device->current_colorbuf = 0;
+    device->current_diffuse = 0;
+    device->current_program = ~0;
+    device->clear_alpha = ~0;
+
+    device->last_source_fragment = ~0;
+}
+
+static void
+i915_batch_cleanup (i915_device_t *device)
+{
+    int i;
+
+    for (i = 0; i < device->batch.exec_count; i++) {
+	intel_bo_t *bo = device->batch.target_bo[i];
+
+	bo->exec = NULL;
+	bo->batch_read_domains = 0;
+	bo->batch_write_domain = 0;
+	cairo_list_del (&bo->cache_list);
+
+	intel_bo_destroy (&device->intel, bo);
+    }
+
+    device->batch.exec_count = 0;
+    device->batch.reloc_count = 0;
+}
+
+static void
+i915_batch_vbo_finish (i915_device_t *device)
+{
+    assert (CAIRO_MUTEX_IS_LOCKED (device->intel.base.base.mutex));
+
+    if (device->vbo || i915_batch_space (device) < (int32_t) device->vbo_used) {
+	intel_bo_t *vbo;
+
+	if (device->vertex_count) {
+	    if (device->vbo == 0) {
+		OUT_DWORD (_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
+			   I1_LOAD_S (0) |
+			   I1_LOAD_S (1) |
+			   1);
+		device->vbo = device->batch.used++;
+		device->vbo_max_index = device->batch.used;
+		OUT_DWORD ((device->floats_per_vertex << S1_VERTEX_WIDTH_SHIFT) |
+			(device->floats_per_vertex << S1_VERTEX_PITCH_SHIFT));
+	    }
+
+	    OUT_DWORD (PRIM3D_RECTLIST |
+		       PRIM3D_INDIRECT_SEQUENTIAL |
+		       device->vertex_count);
+	    OUT_DWORD (device->vertex_index);
+	}
+
+	if (device->last_vbo != NULL)
+	    intel_bo_destroy (&device->intel, device->last_vbo);
+
+	device->batch_base[device->vbo_max_index] |= device->vertex_index + device->vertex_count;
+
+	/* will include a few bytes of inter-array padding */
+	vbo = intel_bo_create (&device->intel,
+			       device->vbo_used, device->vbo_used,
+			       FALSE, I915_TILING_NONE, 0);
+	i915_batch_fill_reloc (device, device->vbo,
+			       vbo, 0,
+			       I915_GEM_DOMAIN_VERTEX, 0);
+	intel_bo_write (&device->intel, vbo, 0, device->vbo_used, device->vbo_base);
+	device->last_vbo = vbo;
+	device->last_vbo_offset = (device->vbo_used+7)&-8;
+	device->last_vbo_space = vbo->base.size - device->last_vbo_offset;
+
+	device->vbo = 0;
+    }
+    else
+    {
+	/* Only a single rectlist in this batch, and no active vertex buffer. */
+	OUT_DWORD (PRIM3D_RECTLIST | (device->vbo_used / 4 - 1));
+
+	memcpy (BATCH_PTR (device), device->vbo_base, device->vbo_used);
+	device->batch.used += device->vbo_used >> 2;
+    }
+
+    device->vbo_used = device->vbo_offset = 0;
+    device->vertex_index = device->vertex_count = 0;
+}
+
+cairo_status_t
+i915_batch_flush (i915_device_t *device)
+{
+    intel_bo_t *batch;
+    cairo_status_t status;
+    uint32_t length, offset;
+    int n;
+
+    assert (CAIRO_MUTEX_IS_LOCKED (device->intel.base.base.mutex));
+
+    if (device->vbo_used)
+	i915_batch_vbo_finish (device);
+
+    if (device->batch.used == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    i915_batch_emit_dword (device, MI_BATCH_BUFFER_END);
+    if ((device->batch.used & 1) != ((sizeof (device->batch_header)>>2) & 1))
+	i915_batch_emit_dword (device, MI_NOOP);
+
+    length = (device->batch.used << 2) + sizeof (device->batch_header);
+
+    /* NB: it is faster to copy the data then map/unmap the batch,
+     * presumably because we frequently only use a small part of the buffer.
+     */
+    batch = NULL;
+    if (device->last_vbo) {
+	if (length <= device->last_vbo_space) {
+	    batch = device->last_vbo;
+	    offset = device->last_vbo_offset;
+
+	    /* fixup the relocations */
+	    for (n = 0; n < device->batch.reloc_count; n++)
+		device->batch.reloc[n].offset += offset;
+	} else
+	    intel_bo_destroy (&device->intel, device->last_vbo);
+	device->last_vbo = NULL;
+    }
+    if (batch == NULL) {
+	batch = intel_bo_create (&device->intel,
+				 length, length,
+				 FALSE, I915_TILING_NONE, 0);
+	if (unlikely (batch == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    i915_batch_cleanup (device);
+	    goto BAIL;
+	}
+
+	offset = 0;
+    }
+    intel_bo_write (&device->intel, batch, offset, length, device->batch_header);
+    status = i915_bo_exec (device, batch, offset);
+    intel_bo_destroy (&device->intel, batch);
+
+BAIL:
+    device->batch.used = 0;
+
+    intel_glyph_cache_unpin (&device->intel);
+    intel_snapshot_cache_thaw (&device->intel);
+
+    i915_device_reset (device);
+
+    return status;
+}
+
+#if 0
+static float *
+i915_add_rectangles (i915_device_t *device, int num_rects, int *count)
+{
+    float *vertices;
+    uint32_t size;
+    int cnt;
+
+    assert (device->floats_per_vertex);
+
+    size = device->rectangle_size;
+    if (unlikely (device->vbo_offset + size > I915_VBO_SIZE))
+	i915_vbo_finish (device);
+
+    vertices = (float *) (device->vbo_base + device->vbo_offset);
+    cnt = (I915_VBO_SIZE - device->vbo_offset) / size;
+    if (cnt > num_rects)
+	cnt = num_rects;
+    device->vbo_used = device->vbo_offset += size * cnt;
+    device->vertex_count += 3 * cnt;
+    *count = cnt;
+    return vertices;
+}
+#endif
+
+static cairo_surface_t *
+i915_surface_create_similar (void *abstract_other,
+			     cairo_content_t content,
+			     int width, int height)
+{
+    i915_surface_t *other;
+    cairo_format_t format;
+    uint32_t tiling = I915_TILING_DEFAULT;
+
+    other = abstract_other;
+    if (content == other->intel.drm.base.content)
+	format = other->intel.drm.format;
+    else
+	format = _cairo_format_from_content (content);
+
+    if (width * _cairo_format_bits_per_pixel (format) > 8 * 32*1024 || height > 64*1024)
+	return NULL;
+
+    /* we presume that a similar surface will be used for blitting */
+    if (i915_surface_needs_tiling (other))
+	tiling = I915_TILING_X;
+
+    return i915_surface_create_internal ((cairo_drm_device_t *) other->intel.drm.base.device,
+					 format,
+					 width, height,
+					 tiling, TRUE);
+}
+
+static cairo_status_t
+i915_surface_finish (void *abstract_surface)
+{
+    i915_surface_t *surface = abstract_surface;
+    i915_device_t *device = i915_device (surface);
+
+    if (surface->stencil != NULL) {
+	intel_bo_in_flight_add (&device->intel, surface->stencil);
+	intel_bo_destroy (&device->intel, surface->stencil);
+    }
+
+    if (surface->is_current_texture) {
+	if (surface->is_current_texture & CURRENT_SOURCE)
+	    device->current_source = NULL;
+	if (surface->is_current_texture & CURRENT_MASK)
+	    device->current_mask = NULL;
+	if (surface->is_current_texture & CURRENT_CLIP)
+	    device->current_clip = NULL;
+	device->current_n_samplers = 0;
+    }
+
+    if (surface == device->current_target)
+	device->current_target = NULL;
+
+    if (surface->cache != NULL) {
+	i915_image_private_t *node = surface->cache;
+	intel_buffer_cache_t *cache = node->container;
+
+	if (--cache->ref_count == 0) {
+	    intel_bo_in_flight_add (&device->intel, cache->buffer.bo);
+	    intel_bo_destroy (&device->intel, cache->buffer.bo);
+	    _cairo_rtree_fini (&cache->rtree);
+	    cairo_list_del (&cache->link);
+	    free (cache);
+	} else {
+	    node->node.state = CAIRO_RTREE_NODE_AVAILABLE;
+	    cairo_list_move (&node->node.link, &cache->rtree.available);
+	    _cairo_rtree_node_collapse (&cache->rtree, node->node.parent);
+	}
+    }
+
+    return intel_surface_finish (&surface->intel);
+}
+
+static cairo_status_t
+i915_surface_batch_flush (i915_surface_t *surface)
+{
+    cairo_status_t status;
+    intel_bo_t *bo;
+
+    assert (surface->intel.drm.fallback == NULL);
+
+    bo = to_intel_bo (surface->intel.drm.bo);
+    if (bo == NULL || bo->batch_write_domain == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    status = cairo_device_acquire (surface->intel.drm.base.device);
+    if (unlikely (status))
+	return status;
+
+    status = i915_batch_flush (i915_device (surface));
+    cairo_device_release (surface->intel.drm.base.device);
+
+    return status;
+}
+
+static cairo_status_t
+i915_surface_flush (void *abstract_surface,
+		    unsigned flags)
+{
+    i915_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->intel.drm.fallback == NULL) {
+	if (surface->intel.drm.base.finished) {
+	    /* Forgo flushing on finish as the user cannot access the surface directly. */
+	    return CAIRO_STATUS_SUCCESS;
+	}
+
+	if (surface->deferred_clear) {
+	    status = i915_surface_clear (surface);
+	    if (unlikely (status))
+		return status;
+	}
+
+	return i915_surface_batch_flush (surface);
+    }
+
+    return intel_surface_flush (abstract_surface, flags);
+}
+
+/* rasterisation */
+
+static cairo_status_t
+_composite_boxes_spans (void			*closure,
+			cairo_span_renderer_t	*renderer,
+			const cairo_rectangle_int_t	*extents)
+{
+    cairo_boxes_t *boxes = closure;
+    cairo_rectangular_scan_converter_t converter;
+    struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    int i;
+
+    _cairo_rectangular_scan_converter_init (&converter, extents);
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    status = _cairo_rectangular_scan_converter_add_box (&converter, &box[i], 1);
+	    if (unlikely (status))
+		goto CLEANUP;
+	}
+    }
+
+    status = converter.base.generate (&converter.base, renderer);
+
+CLEANUP:
+    converter.base.destroy (&converter.base);
+    return status;
+}
+
+cairo_status_t
+i915_fixup_unbounded (i915_surface_t *dst,
+		      const cairo_composite_rectangles_t *extents,
+		      cairo_clip_t *clip)
+{
+    i915_shader_t shader;
+    i915_device_t *device;
+    cairo_status_t status;
+
+    if (clip != NULL) {
+	cairo_region_t *clip_region = NULL;
+
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+	assert (clip_region == NULL);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    clip = NULL;
+    } else {
+	if (extents->bounded.width == extents->unbounded.width &&
+	    extents->bounded.height == extents->unbounded.height)
+	{
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    if (clip != NULL) {
+	i915_shader_init (&shader, dst, CAIRO_OPERATOR_DEST_OVER, 1.);
+	i915_shader_set_clip (&shader, clip);
+	status = i915_shader_acquire_pattern (&shader,
+					      &shader.source,
+					      &_cairo_pattern_white.base,
+					      &extents->unbounded);
+	assert (status == CAIRO_STATUS_SUCCESS);
+    } else {
+	i915_shader_init (&shader, dst, CAIRO_OPERATOR_CLEAR, 1.);
+	status = i915_shader_acquire_pattern (&shader,
+					      &shader.source,
+					      &_cairo_pattern_clear.base,
+					      &extents->unbounded);
+	assert (status == CAIRO_STATUS_SUCCESS);
+    }
+
+    device = i915_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	return status;
+
+    status = i915_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto BAIL;
+
+    if (extents->bounded.width == 0 || extents->bounded.height == 0) {
+	shader.add_rectangle (&shader,
+			      extents->unbounded.x,
+			      extents->unbounded.y,
+			      extents->unbounded.width,
+			      extents->unbounded.height);
+    } else {
+	/* top */
+	if (extents->bounded.y != extents->unbounded.y) {
+	    shader.add_rectangle (&shader,
+				  extents->unbounded.x,
+				  extents->unbounded.y,
+				  extents->unbounded.width,
+				  extents->bounded.y - extents->unbounded.y);
+	}
+
+	/* left */
+	if (extents->bounded.x != extents->unbounded.x) {
+	    shader.add_rectangle (&shader,
+				  extents->unbounded.x,
+				  extents->bounded.y,
+				  extents->bounded.x - extents->unbounded.x,
+				  extents->bounded.height);
+	}
+
+	/* right */
+	if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+	    shader.add_rectangle (&shader,
+				  extents->bounded.x + extents->bounded.width,
+				  extents->bounded.y,
+				  extents->unbounded.x + extents->unbounded.width - (extents->bounded.x + extents->bounded.width),
+				  extents->bounded.height);
+	}
+
+	/* bottom */
+	if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+	    shader.add_rectangle (&shader,
+				  extents->unbounded.x,
+				  extents->bounded.y + extents->bounded.height,
+				  extents->unbounded.width,
+				  extents->unbounded.y + extents->unbounded.height - (extents->bounded.y + extents->bounded.height));
+	}
+    }
+
+    i915_shader_fini (&shader);
+  BAIL:
+    cairo_device_release (&device->intel.base.base);
+    return status;
+}
+
+static cairo_status_t
+i915_fixup_unbounded_boxes (i915_surface_t *dst,
+			    const cairo_composite_rectangles_t *extents,
+			    cairo_clip_t *clip,
+			    cairo_boxes_t *boxes)
+{
+    cairo_boxes_t clear;
+    cairo_box_t box;
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status;
+    struct _cairo_boxes_chunk *chunk;
+    int i;
+
+    if (boxes->num_boxes <= 1)
+	return i915_fixup_unbounded (dst, extents, clip);
+
+    _cairo_boxes_init (&clear);
+
+    box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+    box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
+    box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
+    box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    clip = NULL;
+    }
+
+    if (clip_region == NULL) {
+	cairo_boxes_t tmp;
+
+	_cairo_boxes_init (&tmp);
+
+	status = _cairo_boxes_add (&tmp, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	tmp.chunks.next = &boxes->chunks;
+	tmp.num_boxes += boxes->num_boxes;
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+
+	tmp.chunks.next = NULL;
+    } else {
+	pixman_box32_t *pbox;
+
+	pbox = pixman_region32_rectangles (&clip_region->rgn, &i);
+	_cairo_boxes_limit (&clear, (cairo_box_t *) pbox, i);
+
+	status = _cairo_boxes_add (&clear, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		status = _cairo_boxes_add (&clear, &chunk->base[i]);
+		if (unlikely (status)) {
+		    _cairo_boxes_fini (&clear);
+		    return status;
+		}
+	    }
+	}
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&clear,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+    }
+
+    if (likely (status == CAIRO_STATUS_SUCCESS && clear.num_boxes)) {
+	i915_shader_t shader;
+	i915_device_t *device;
+
+	if (clip != NULL) {
+	    i915_shader_init (&shader, dst, CAIRO_OPERATOR_DEST_OVER, 1.);
+	    i915_shader_set_clip (&shader, clip);
+	    status = i915_shader_acquire_pattern (&shader,
+						  &shader.source,
+						  &_cairo_pattern_white.base,
+						  &extents->unbounded);
+	    assert (status == CAIRO_STATUS_SUCCESS);
+	} else {
+	    i915_shader_init (&shader, dst, CAIRO_OPERATOR_CLEAR, 1.);
+	    status = i915_shader_acquire_pattern (&shader,
+						  &shader.source,
+						  &_cairo_pattern_clear.base,
+						  &extents->unbounded);
+	    assert (status == CAIRO_STATUS_SUCCESS);
+	}
+
+	device = i915_device (dst);
+	status = cairo_device_acquire (&device->intel.base.base);
+	if (unlikely (status))
+	    goto err_shader;
+
+	status = i915_shader_commit (&shader, device);
+	if (unlikely (status))
+	    goto err_device;
+
+	for (chunk = &clear.chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+		shader.add_rectangle (&shader, x1, y1, x2 - x1, y2 - y1);
+	    }
+	}
+err_device:
+	cairo_device_release (&device->intel.base.base);
+err_shader:
+	i915_shader_fini (&shader);
+    }
+
+    _cairo_boxes_fini (&clear);
+
+    return status;
+}
+
+static cairo_bool_t
+i915_can_blt (i915_surface_t *dst,
+	      const cairo_pattern_t *pattern)
+{
+    const cairo_surface_pattern_t *spattern;
+    i915_surface_t *src;
+
+    spattern = (const cairo_surface_pattern_t *) pattern;
+    src = (i915_surface_t *) spattern->surface;
+
+    if (src->intel.drm.base.device != dst->intel.drm.base.device)
+	return FALSE;
+
+    if (! i915_surface_needs_tiling (dst))
+	return FALSE;
+
+    if (! _cairo_matrix_is_translation (&pattern->matrix))
+	return FALSE;
+
+    if (! (pattern->filter == CAIRO_FILTER_NEAREST ||
+	   pattern->filter == CAIRO_FILTER_FAST))
+    {
+	if (! _cairo_fixed_is_integer (_cairo_fixed_from_double (pattern->matrix.x0)) ||
+	    ! _cairo_fixed_is_integer (_cairo_fixed_from_double (pattern->matrix.y0)))
+	{
+	    return FALSE;
+	}
+    }
+
+    return _cairo_format_bits_per_pixel (src->intel.drm.format) ==
+	_cairo_format_bits_per_pixel (dst->intel.drm.format);
+}
+
+static cairo_status_t
+i915_blt (i915_surface_t *src,
+	  i915_surface_t *dst,
+	  int src_x, int src_y,
+	  int width, int height,
+	  int dst_x, int dst_y,
+	  cairo_bool_t flush)
+{
+    i915_device_t *device;
+    intel_bo_t *bo_array[2];
+    cairo_status_t status;
+    int br13, cmd;
+
+    bo_array[0] = to_intel_bo (dst->intel.drm.bo);
+    bo_array[1] = to_intel_bo (src->intel.drm.bo);
+
+    status = i915_surface_fallback_flush (src);
+    if (unlikely (status))
+	return status;
+
+    device = i915_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	return status;
+
+    if (! i915_check_aperture_and_fences (device, bo_array, 2) ||
+	i915_batch_space (device) < 9)
+    {
+	status = i915_batch_flush (device);
+	if (unlikely (status))
+	    goto CLEANUP;
+    }
+
+    cmd = XY_SRC_COPY_BLT_CMD;
+    br13 = (0xCC << 16) | dst->intel.drm.stride;
+    switch (dst->intel.drm.format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FORMAT_A8:
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	br13 |= BR13_565;
+	break;
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_ARGB32:
+	br13 |= BR13_8888;
+	cmd |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
+	break;
+    }
+
+    OUT_DWORD (cmd);
+    OUT_DWORD (br13);
+    OUT_DWORD ((dst_y << 16) | dst_x);
+    OUT_DWORD (((dst_y + height - 1) << 16) | (dst_x + width - 1));
+    OUT_RELOC_FENCED (dst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
+    OUT_DWORD ((src_y << 16) | src_x);
+    OUT_DWORD (src->intel.drm.stride);
+    OUT_RELOC_FENCED (src, I915_GEM_DOMAIN_RENDER, 0);
+    /* require explicit RenderCache flush for 2D -> 3D sampler? */
+    if (flush)
+	OUT_DWORD (MI_FLUSH);
+
+CLEANUP:
+    cairo_device_release (&device->intel.base.base);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+i915_surface_copy_subimage (i915_device_t *device,
+			    i915_surface_t *src,
+			    const cairo_rectangle_int_t *extents,
+			    cairo_bool_t flush,
+			    i915_surface_t **clone_out)
+{
+    i915_surface_t *clone;
+    cairo_status_t status;
+
+    clone = (i915_surface_t *)
+	i915_surface_create_internal (&device->intel.base,
+				      src->intel.drm.format,
+				      extents->width,
+				      extents->height,
+				      I915_TILING_X, TRUE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    status = i915_blt (src, clone,
+		       extents->x, extents->y,
+		       extents->width, extents->height,
+		       0, 0,
+		       flush);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (&clone->intel.drm.base);
+	return status;
+    }
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i915_clear_boxes (i915_surface_t *dst,
+		  const cairo_boxes_t *boxes)
+{
+    i915_device_t *device = i915_device (dst);
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    intel_bo_t *bo_array[1] = { to_intel_bo (dst->intel.drm.bo) };
+    int cmd, br13, clear = 0, i;
+
+    cmd = XY_COLOR_BLT_CMD;
+    br13 = (0xCC << 16) | dst->intel.drm.stride;
+    switch (dst->intel.drm.format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FORMAT_A8:
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	br13 |= BR13_565;
+	break;
+    case CAIRO_FORMAT_RGB24:
+	clear = 0xff000000;
+    case CAIRO_FORMAT_ARGB32:
+	br13 |= BR13_8888;
+	cmd |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
+	break;
+    }
+
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	return status;
+
+    if (! i915_check_aperture_and_fences (device, bo_array, 1) ||
+	i915_batch_space (device) < 6 * boxes->num_boxes)
+    {
+	status = i915_batch_flush (device);
+	if (unlikely (status))
+	    goto RELEASE;
+    }
+
+    if (device->vertex_count)
+	i915_vbo_flush (device);
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_round (box[i].p1.x);
+	    int x2 = _cairo_fixed_integer_round (box[i].p2.x);
+	    int y1 = _cairo_fixed_integer_round (box[i].p1.y);
+	    int y2 = _cairo_fixed_integer_round (box[i].p2.y);
+
+	    if (x2 <= x1 || y2 <= y1)
+		continue;
+
+	    OUT_DWORD (cmd);
+	    OUT_DWORD (br13);
+	    OUT_DWORD ((y1 << 16) | x1);
+	    OUT_DWORD (((y2 - 1) << 16) | (x2 - 1));
+	    OUT_RELOC_FENCED (dst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
+	    OUT_DWORD (clear);
+	}
+    }
+
+RELEASE:
+    cairo_device_release (&device->intel.base.base);
+    return status;
+}
+
+static cairo_status_t
+i915_surface_extract_X_from_Y (i915_device_t *device,
+			       i915_surface_t *src,
+			       const cairo_rectangle_int_t *extents,
+			       i915_surface_t **clone_out)
+{
+    i915_surface_t *clone;
+    i915_shader_t shader;
+    cairo_surface_pattern_t pattern;
+    cairo_rectangle_int_t rect;
+    cairo_status_t status;
+
+    status = i915_surface_fallback_flush (src);
+    if (unlikely (status))
+	return status;
+
+    clone = (i915_surface_t *)
+	i915_surface_create_internal (&device->intel.base,
+				      src->intel.drm.format,
+				      extents->width,
+				      extents->height,
+				      I915_TILING_X, TRUE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    i915_shader_init (&shader, clone, CAIRO_OPERATOR_SOURCE, 1.);
+
+    _cairo_pattern_init_for_surface (&pattern, &src->intel.drm.base);
+    pattern.base.filter = CAIRO_FILTER_NEAREST;
+    cairo_matrix_init_translate (&pattern.base.matrix, extents->x, extents->y);
+
+    rect.x = rect.y = 0;
+    rect.width = extents->width;
+    rect.height = extents->height;
+    status = i915_shader_acquire_pattern (&shader, &shader.source, &pattern.base, &rect);
+    _cairo_pattern_fini (&pattern.base);
+
+    if (unlikely (status))
+	goto err_shader;
+
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto err_shader;
+
+    status = i915_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto err_device;
+
+    shader.add_rectangle (&shader, 0, 0, extents->width, extents->height);
+
+    cairo_device_release (&device->intel.base.base);
+    i915_shader_fini (&shader);
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+
+err_device:
+    cairo_device_release (&device->intel.base.base);
+err_shader:
+    i915_shader_fini (&shader);
+    cairo_surface_destroy (&clone->intel.drm.base);
+    return status;
+}
+
+static cairo_status_t
+i915_blt_boxes (i915_surface_t *dst,
+		const cairo_pattern_t *pattern,
+		const cairo_rectangle_int_t *extents,
+		const cairo_boxes_t *boxes)
+{
+    const cairo_surface_pattern_t *spattern;
+    i915_device_t *device;
+    i915_surface_t *src;
+    cairo_surface_t *free_me = NULL;
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    int br13, cmd, tx, ty;
+    intel_bo_t *bo_array[2];
+    int i;
+
+    if (! i915_can_blt (dst, pattern))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    spattern = (const cairo_surface_pattern_t *) pattern;
+    src = (i915_surface_t *) spattern->surface;
+
+    if (src->intel.drm.base.is_clear)
+	return i915_clear_boxes (dst, boxes);
+
+    if (pattern->extend != CAIRO_EXTEND_NONE &&
+	(extents->x + tx < 0 ||
+	 extents->y + ty < 0 ||
+	 extents->x + tx + extents->width  > src->intel.drm.width ||
+	 extents->y + ty + extents->height > src->intel.drm.height))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = i915_surface_fallback_flush (src);
+    if (unlikely (status))
+	return status;
+
+    tx = _cairo_lround (pattern->matrix.x0);
+    ty = _cairo_lround (pattern->matrix.y0);
+
+    device = i915_device (dst);
+    if (to_intel_bo (src->intel.drm.bo)->tiling == I915_TILING_Y) {
+	cairo_rectangle_int_t extents;
+
+	_cairo_boxes_extents (boxes, &extents);
+	extents.x += tx;
+	extents.y += ty;
+
+	status = i915_surface_extract_X_from_Y (device, src, &extents, &src);
+	if (unlikely (status))
+	    return status;
+
+	free_me = &src->intel.drm.base;
+	tx = -extents.x;
+	ty = -extents.y;
+    }
+
+    bo_array[0] = to_intel_bo (dst->intel.drm.bo);
+    bo_array[1] = to_intel_bo (src->intel.drm.bo);
+
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto CLEANUP_SURFACE;
+
+    if (! i915_check_aperture_and_fences (device, bo_array, 2) ||
+	i915_batch_space (device) < 8 * boxes->num_boxes)
+    {
+	status = i915_batch_flush (device);
+	if (unlikely (status))
+	    goto CLEANUP_DEVICE;
+    }
+
+    cmd = XY_SRC_COPY_BLT_CMD;
+    br13 = (0xCC << 16) | dst->intel.drm.stride;
+    switch (dst->intel.drm.format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FORMAT_A8:
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	br13 |= BR13_565;
+	break;
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_ARGB32:
+	br13 |= BR13_8888;
+	cmd |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
+	break;
+    }
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	const cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_round (box[i].p1.x);
+	    int x2 = _cairo_fixed_integer_round (box[i].p2.x);
+	    int y1 = _cairo_fixed_integer_round (box[i].p1.y);
+	    int y2 = _cairo_fixed_integer_round (box[i].p2.y);
+
+	    if (x1 + tx < 0)
+		x1 = -tx;
+	    if (x2 + tx > src->intel.drm.width)
+		x2 = src->intel.drm.width - tx;
+
+	    if (y1 + ty < 0)
+		y1 = -ty;
+	    if (y2 + ty > src->intel.drm.height)
+		y2 = src->intel.drm.height - ty;
+
+	    if (x2 <= x1 || y2 <= y1)
+		continue;
+	    if (x2 < 0 || y2 < 0)
+		continue;
+	    if (x1 >= dst->intel.drm.width || y2 >= dst->intel.drm.height)
+		continue;
+
+	    OUT_DWORD (cmd);
+	    OUT_DWORD (br13);
+	    OUT_DWORD ((y1 << 16) | x1);
+	    OUT_DWORD (((y2 - 1) << 16) | (x2 - 1));
+	    OUT_RELOC_FENCED (dst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
+	    OUT_DWORD (((y1 + ty) << 16) | (x1 + tx));
+	    OUT_DWORD (src->intel.drm.stride);
+	    OUT_RELOC_FENCED (src, I915_GEM_DOMAIN_RENDER, 0);
+	}
+    }
+
+    /* XXX fixup blank portions */
+
+CLEANUP_DEVICE:
+    cairo_device_release (&device->intel.base.base);
+CLEANUP_SURFACE:
+    cairo_surface_destroy (free_me);
+    return status;
+}
+
+static cairo_status_t
+_upload_image_inplace (i915_surface_t *surface,
+		       const cairo_pattern_t *source,
+		       const cairo_rectangle_int_t *extents,
+		       const cairo_boxes_t *boxes)
+{
+    i915_device_t *device;
+    const cairo_surface_pattern_t *pattern;
+    cairo_image_surface_t *image;
+    const struct _cairo_boxes_chunk *chunk;
+    intel_bo_t *bo;
+    int tx, ty, i;
+
+    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    if (pattern->surface->type != CAIRO_SURFACE_TYPE_IMAGE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix, &tx, &ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    image = (cairo_image_surface_t *) pattern->surface;
+    if (source->extend != CAIRO_EXTEND_NONE &&
+	(extents->x + tx < 0 ||
+	 extents->y + ty < 0 ||
+	 extents->x + tx + extents->width  > image->width ||
+	 extents->y + ty + extents->height > image->height))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    device = i915_device (surface);
+    bo = to_intel_bo (surface->intel.drm.bo);
+    if (bo->exec != NULL || ! intel_bo_is_inactive (&device->intel, bo)) {
+	intel_bo_t *new_bo;
+	cairo_bool_t need_clear = FALSE;
+
+	if (boxes->num_boxes != 1 ||
+	    extents->width < surface->intel.drm.width ||
+	    extents->height < surface->intel.drm.height)
+	{
+	    if (! surface->intel.drm.base.is_clear)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	    need_clear = TRUE;
+	}
+
+	new_bo = intel_bo_create (&device->intel,
+				  bo->full_size, bo->base.size,
+				  FALSE, bo->tiling, bo->stride);
+	if (unlikely (new_bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	intel_bo_in_flight_add (&device->intel, bo);
+	intel_bo_destroy (&device->intel, bo);
+
+	bo = new_bo;
+	surface->intel.drm.bo = &bo->base;
+
+	if (need_clear) {
+	    memset (intel_bo_map (&device->intel, bo), 0,
+		    bo->stride * surface->intel.drm.height);
+	}
+    }
+
+    if (image->format == surface->intel.drm.format) {
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    cairo_box_t *box = chunk->base;
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_round (box[i].p1.x);
+		int x2 = _cairo_fixed_integer_round (box[i].p2.x);
+		int y1 = _cairo_fixed_integer_round (box[i].p1.y);
+		int y2 = _cairo_fixed_integer_round (box[i].p2.y);
+		cairo_status_t status;
+
+		if (x1 + tx < 0)
+		    x1 = -tx;
+		if (x2 + tx > image->width)
+		    x2 = image->width - tx;
+
+		if (y1 + ty < 0)
+		    y1 = -ty;
+		if (y2 + ty > image->height)
+		    y2 = image->height - ty;
+
+		if (x2 <= x1 || y2 <= y1)
+		    continue;
+		if (x2 < 0 || y2 < 0)
+		    continue;
+		if (x1 >= surface->intel.drm.width || y2 >= surface->intel.drm.height)
+		    continue;
+
+		status = intel_bo_put_image (&device->intel,
+					     bo,
+					     image,
+					     x1 + tx, y1 + ty,
+					     x2 - x1, y2 - y1,
+					     x1, y1);
+		if (unlikely (status))
+		    return status;
+	    }
+	}
+    } else {
+	pixman_image_t *dst;
+	void *ptr;
+
+	ptr = intel_bo_map (&device->intel, bo);
+	if (unlikely (ptr == NULL))
+	    return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+	dst = pixman_image_create_bits (_cairo_format_to_pixman_format_code (surface->intel.drm.format),
+					surface->intel.drm.width,
+					surface->intel.drm.height,
+					ptr,
+					surface->intel.drm.stride);
+	if (unlikely (dst == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    cairo_box_t *box = chunk->base;
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_round (box[i].p1.x);
+		int x2 = _cairo_fixed_integer_round (box[i].p2.x);
+		int y1 = _cairo_fixed_integer_round (box[i].p1.y);
+		int y2 = _cairo_fixed_integer_round (box[i].p2.y);
+
+		if (x1 + tx < 0)
+		    x1 = -tx;
+		if (x2 + tx > image->width)
+		    x2 = image->width - tx;
+
+		if (y1 + ty < 0)
+		    y1 = -ty;
+		if (y2 + ty > image->height)
+		    y2 = image->height - ty;
+
+		if (x2 <= x1 || y2 <= y1)
+		    continue;
+		if (x2 < 0 || y2 < 0)
+		    continue;
+		if (x1 >= surface->intel.drm.width || y2 >= surface->intel.drm.height)
+		    continue;
+
+		pixman_image_composite32 (PIXMAN_OP_SRC,
+					  image->pixman_image, NULL, dst,
+					  x1 + tx, y1 + ty,
+					  0, 0,
+					  x1, y1,
+					  x2 - x1, y2 - y1);
+	    }
+	}
+
+	pixman_image_unref (dst);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_composite_boxes (i915_surface_t *dst,
+		  cairo_operator_t op,
+		  const cairo_pattern_t *pattern,
+		  cairo_boxes_t *boxes,
+		  cairo_antialias_t antialias,
+		  cairo_clip_t *clip,
+		  double opacity,
+		  const cairo_composite_rectangles_t *extents)
+{
+    cairo_bool_t need_clip_surface = FALSE;
+    cairo_region_t *clip_region = NULL;
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    i915_shader_t shader;
+    i915_device_t *device;
+    int i;
+
+    /* If the boxes are not pixel-aligned, we will need to compute a real mask */
+    if (antialias != CAIRO_ANTIALIAS_NONE) {
+	if (! boxes->is_pixel_aligned)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    if (clip == NULL && op == CAIRO_OPERATOR_SOURCE && opacity == 1.) {
+	if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    status = i915_blt_boxes (dst, pattern, &extents->bounded, boxes);
+	    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+		status = _upload_image_inplace (dst, pattern,
+						&extents->bounded, boxes);
+	    }
+	    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+		return status;
+	}
+    }
+
+    if (i915_surface_needs_tiling (dst)) {
+	ASSERT_NOT_REACHED;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    i915_shader_init (&shader, dst, op, opacity);
+
+    status = i915_shader_acquire_pattern (&shader,
+					  &shader.source,
+					  pattern,
+					  &extents->bounded);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+	need_clip_surface = status == CAIRO_INT_STATUS_UNSUPPORTED;
+	if (need_clip_surface)
+	    i915_shader_set_clip (&shader, clip);
+    }
+
+    device = i915_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto err_shader;
+
+    status = i915_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto err_device;
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_round (box[i].p1.x);
+	    int y1 = _cairo_fixed_integer_round (box[i].p1.y);
+	    int x2 = _cairo_fixed_integer_round (box[i].p2.x);
+	    int y2 = _cairo_fixed_integer_round (box[i].p2.y);
+
+	    if (x2 > x1 && y2 > y1)
+		shader.add_rectangle (&shader, x1, y1, x2 - x1, y2 - y1);
+	}
+    }
+
+    if (! extents->is_bounded)
+	status = i915_fixup_unbounded_boxes (dst, extents, clip, boxes);
+
+  err_device:
+    cairo_device_release (&device->intel.base.base);
+  err_shader:
+    i915_shader_fini (&shader);
+
+    return status;
+}
+
+cairo_status_t
+i915_surface_clear (i915_surface_t *dst)
+{
+    i915_device_t *device;
+    cairo_status_t status;
+    intel_bo_t *bo_array[1] = { to_intel_bo (dst->intel.drm.bo) };
+
+    device = i915_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	return status;
+
+    if (i915_surface_needs_tiling (dst)) {
+	int cmd, br13, clear = 0;
+
+	if (! i915_check_aperture_and_fences (device, bo_array, 1) ||
+	    i915_batch_space (device) < 6)
+	{
+	    status = i915_batch_flush (device);
+	    if (unlikely (status)) {
+		cairo_device_release (&device->intel.base.base);
+		return status;
+	    }
+	}
+
+	if (device->vertex_count)
+	    i915_vbo_flush (device);
+
+	cmd = XY_COLOR_BLT_CMD;
+	br13 = (0xCC << 16) | dst->intel.drm.stride;
+	switch (dst->intel.drm.format) {
+	default:
+	case CAIRO_FORMAT_INVALID:
+	case CAIRO_FORMAT_A1:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_FORMAT_A8:
+	    break;
+	case CAIRO_FORMAT_RGB16_565:
+	    br13 |= BR13_565;
+	    break;
+	case CAIRO_FORMAT_RGB24:
+	    clear = 0xff000000;
+	case CAIRO_FORMAT_ARGB32:
+	    br13 |= BR13_8888;
+	    cmd |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
+	    break;
+	}
+
+	OUT_DWORD (cmd);
+	OUT_DWORD (br13);
+	OUT_DWORD (0);
+	OUT_DWORD (((dst->intel.drm.height - 1) << 16) |
+		   (dst->intel.drm.width - 1));
+	OUT_RELOC_FENCED (dst,
+			  I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
+	OUT_DWORD (clear);
+    } else {
+	if (! i915_check_aperture (device, bo_array, 1) ||
+	    i915_batch_space (device) < 24)
+	{
+	    status = i915_batch_flush (device);
+	    if (unlikely (status)) {
+		cairo_device_release (&device->intel.base.base);
+		return status;
+	    }
+	}
+
+	if (device->vertex_count)
+	    i915_vbo_flush (device);
+
+	i915_set_dst (device, dst);
+
+	/* set clear parameters */
+	if (device->clear_alpha != (dst->intel.drm.base.content & CAIRO_CONTENT_ALPHA)) {
+	    device->clear_alpha = dst->intel.drm.base.content & CAIRO_CONTENT_ALPHA;
+	    OUT_DWORD (_3DSTATE_CLEAR_PARAMETERS);
+	    OUT_DWORD (CLEARPARAM_CLEAR_RECT | CLEARPARAM_WRITE_COLOR);
+	    /* ZONE_INIT color */
+	    if (device->clear_alpha) /* XXX depends on pixel format, 16bit needs replication, 8bit? */
+		OUT_DWORD (0x00000000);
+	    else
+		OUT_DWORD (0xff000000);
+	    OUT_DWORD (0); /* ZONE_INIT depth */
+	    /* CLEAR_RECT color */
+	    if (device->clear_alpha)
+		OUT_DWORD (0x00000000);
+	    else
+		OUT_DWORD (0xff000000);
+	    OUT_DWORD (0); /* CLEAR_RECT depth */
+	    OUT_DWORD (0); /* CLEAR_RECT stencil */
+	}
+
+	OUT_DWORD (PRIM3D_CLEAR_RECT | 5);
+	OUT_DWORD (pack_float (dst->intel.drm.width));
+	OUT_DWORD (pack_float (dst->intel.drm.height));
+	OUT_DWORD (0);
+	OUT_DWORD (pack_float (dst->intel.drm.height));
+	OUT_DWORD (0);
+	OUT_DWORD (0);
+    }
+
+    cairo_device_release (&device->intel.base.base);
+
+    dst->deferred_clear = FALSE;
+    return status;
+}
+
+static cairo_status_t
+_clip_and_composite_boxes (i915_surface_t *dst,
+			   cairo_operator_t op,
+			   const cairo_pattern_t *src,
+			   cairo_boxes_t *boxes,
+			   cairo_antialias_t antialias,
+			   const cairo_composite_rectangles_t *extents,
+			   cairo_clip_t *clip,
+			   double opacity)
+{
+    cairo_status_t status;
+
+    if (boxes->num_boxes == 0) {
+	if (extents->is_bounded)
+	    return CAIRO_STATUS_SUCCESS;
+
+	return i915_fixup_unbounded (dst, extents, clip);
+    }
+
+    if (clip == NULL &&
+	(op == CAIRO_OPERATOR_SOURCE || (op == CAIRO_OPERATOR_OVER && dst->intel.drm.base.is_clear)) &&
+	opacity == 1. &&
+	boxes->num_boxes == 1 &&
+	extents->bounded.width  == dst->intel.drm.width &&
+	extents->bounded.height == dst->intel.drm.height)
+    {
+	op = CAIRO_OPERATOR_SOURCE;
+	dst->deferred_clear = FALSE;
+
+	status = _upload_image_inplace (dst, src,
+					&extents->bounded, boxes);
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    return status;
+    }
+
+    if (dst->deferred_clear) {
+	status = i915_surface_clear (dst);
+	if (unlikely (status))
+	    return status;
+    }
+
+    /* Use a fast path if the boxes are pixel aligned */
+    status = _composite_boxes (dst, op, src, boxes, antialias, clip, opacity, extents);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    /* Otherwise render the boxes via an implicit mask and composite in the usual
+     * fashion.
+     */
+    return i915_clip_and_composite_spans (dst, op, src, antialias,
+					  _composite_boxes_spans, boxes,
+					  extents, clip, opacity);
+}
+
+static cairo_clip_path_t *
+_clip_get_solitary_path (cairo_clip_t *clip)
+{
+    cairo_clip_path_t *iter = clip->path;
+    cairo_clip_path_t *path = NULL;
+
+    do {
+	if ((iter->flags & CAIRO_CLIP_PATH_IS_BOX) == 0) {
+	    if (path != NULL)
+		return FALSE;
+
+	    path = iter;
+	}
+	iter = iter->prev;
+    } while (iter != NULL);
+
+    return path;
+}
+
+typedef struct {
+    cairo_polygon_t		polygon;
+    cairo_fill_rule_t		 fill_rule;
+    cairo_antialias_t		 antialias;
+} composite_polygon_info_t;
+
+static cairo_status_t
+_composite_polygon_spans (void                          *closure,
+			  cairo_span_renderer_t		*renderer,
+			  const cairo_rectangle_int_t   *extents)
+{
+    composite_polygon_info_t *info = closure;
+    cairo_botor_scan_converter_t converter;
+    cairo_status_t status;
+    cairo_box_t box;
+
+    box.p1.x = _cairo_fixed_from_int (extents->x);
+    box.p1.y = _cairo_fixed_from_int (extents->y);
+    box.p2.x = _cairo_fixed_from_int (extents->x + extents->width);
+    box.p2.y = _cairo_fixed_from_int (extents->y + extents->height);
+
+    _cairo_botor_scan_converter_init (&converter, &box, info->fill_rule);
+
+    status = converter.base.add_polygon (&converter.base, &info->polygon);
+    if (likely (status == CAIRO_STATUS_SUCCESS))
+	status = converter.base.generate (&converter.base, renderer);
+
+    converter.base.destroy (&converter.base);
+
+    return status;
+}
+
+static cairo_int_status_t
+i915_surface_fill_with_alpha (void			*abstract_dst,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		 fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias,
+			      cairo_clip_t		*clip,
+			      double			 opacity)
+{
+    i915_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    composite_polygon_info_t info;
+    cairo_box_t boxes_stack[32], *clip_boxes = boxes_stack;
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    int num_boxes = ARRAY_LENGTH (boxes_stack);
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_fill (&extents,
+							dst->intel.drm.width,
+							dst->intel.drm.height,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (extents.is_bounded && clip != NULL) {
+	cairo_clip_path_t *clip_path;
+
+	if (((clip_path = _clip_get_solitary_path (clip)) != NULL) &&
+	    _cairo_path_fixed_equal (&clip_path->path, path))
+	{
+	    clip = NULL;
+	}
+    }
+
+    if (clip != NULL) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	have_clip = TRUE;
+    }
+
+    status = _cairo_clip_to_boxes (&clip, &extents, &clip_boxes, &num_boxes);
+    if (unlikely (status)) {
+	if (have_clip)
+	    _cairo_clip_fini (&local_clip);
+
+	return status;
+    }
+
+    assert (! _cairo_path_fixed_fill_is_empty (path));
+
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	_cairo_boxes_limit (&boxes, clip_boxes, num_boxes);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      &boxes);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = _clip_and_composite_boxes (dst, op, source,
+						&boxes, antialias,
+						&extents, clip,
+						opacity);
+	}
+
+	_cairo_boxes_fini (&boxes);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    goto CLEANUP_BOXES;
+    }
+
+    _cairo_polygon_init (&info.polygon, clip_boxes, num_boxes);
+
+    status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &info.polygon);
+    if (unlikely (status))
+	goto CLEANUP_POLYGON;
+
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t rect;
+
+	_cairo_box_round_to_rectangle (&info.polygon.extents, &rect);
+	if (! _cairo_rectangle_intersect (&extents.bounded, &rect))
+	    goto CLEANUP_POLYGON;
+    }
+
+    if (info.polygon.num_edges == 0) {
+	if (! extents.is_bounded)
+	    status = i915_fixup_unbounded (dst, &extents, clip);
+
+	goto CLEANUP_POLYGON;
+    }
+
+    info.fill_rule = fill_rule;
+    info.antialias = antialias;
+    status = i915_clip_and_composite_spans (dst, op, source, antialias,
+					    _composite_polygon_spans, &info,
+					    &extents, clip, opacity);
+
+CLEANUP_POLYGON:
+    _cairo_polygon_fini (&info.polygon);
+
+CLEANUP_BOXES:
+    if (clip_boxes != boxes_stack)
+	free (clip_boxes);
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static cairo_int_status_t
+i915_surface_paint_with_alpha (void			*abstract_dst,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       cairo_clip_t		*clip,
+			       double			 opacity)
+{
+    i915_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    cairo_clip_path_t *clip_path;
+    cairo_boxes_t boxes;
+    int num_boxes = ARRAY_LENGTH (boxes.boxes_embedded);
+    cairo_box_t *clip_boxes = boxes.boxes_embedded;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_paint (&extents,
+							 dst->intel.drm.width,
+							 dst->intel.drm.height,
+							 op, source,
+							 clip);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	have_clip = TRUE;
+    }
+
+    status = _cairo_clip_to_boxes (&clip, &extents, &clip_boxes, &num_boxes);
+    if (unlikely (status)) {
+	if (have_clip)
+	    _cairo_clip_fini (&local_clip);
+
+	return status;
+    }
+
+    /* If the clip cannot be reduced to a set of boxes, we will need to
+     * use a clipmask. Paint is special as it is the only operation that
+     * does not implicitly use a mask, so we may be able to reduce this
+     * operation to a fill...
+     */
+    if (clip != NULL &&
+	extents.is_bounded &&
+	(clip_path = _clip_get_solitary_path (clip)) != NULL)
+    {
+	status = i915_surface_fill_with_alpha (dst, op, source,
+					       &clip_path->path,
+					       clip_path->fill_rule,
+					       clip_path->tolerance,
+					       clip_path->antialias,
+					       NULL, opacity);
+    }
+    else
+    {
+	_cairo_boxes_init_for_array (&boxes, clip_boxes, num_boxes);
+	status = _clip_and_composite_boxes (dst, op, source,
+					    &boxes, CAIRO_ANTIALIAS_DEFAULT,
+					    &extents, clip, opacity);
+    }
+    if (clip_boxes != boxes.boxes_embedded)
+	free (clip_boxes);
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static cairo_int_status_t
+i915_surface_paint (void			*abstract_dst,
+		    cairo_operator_t		 op,
+		    const cairo_pattern_t	*source,
+		    cairo_clip_t		*clip)
+{
+    i915_surface_t *dst = abstract_dst;
+
+    /* XXX unsupported operators? use pixel shader blending, eventually */
+
+    if (op == CAIRO_OPERATOR_CLEAR && clip == NULL) {
+	dst->deferred_clear = TRUE;
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    return i915_surface_paint_with_alpha (dst, op, source, clip, 1.);
+}
+
+static cairo_int_status_t
+i915_surface_mask (void				*abstract_dst,
+		   cairo_operator_t		 op,
+		   const cairo_pattern_t	*source,
+		   const cairo_pattern_t	*mask,
+		   cairo_clip_t			*clip)
+{
+    i915_surface_t *dst = abstract_dst;
+    i915_device_t *device;
+    cairo_composite_rectangles_t extents;
+    i915_shader_t shader;
+    cairo_clip_t local_clip;
+    cairo_region_t *clip_region = NULL;
+    cairo_bool_t need_clip_surface = FALSE;
+    cairo_bool_t have_clip = FALSE;
+    cairo_status_t status;
+
+    if (mask->type == CAIRO_PATTERN_TYPE_SOLID) {
+	const cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) mask;
+	return i915_surface_paint_with_alpha (dst, op, source, clip, solid->color.alpha);
+    }
+
+    status = _cairo_composite_rectangles_init_for_mask (&extents,
+							dst->intel.drm.width,
+							dst->intel.drm.height,
+							op, source, mask, clip);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL && extents.is_bounded) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	status = _cairo_clip_rectangle (clip, &extents.bounded);
+	if (unlikely (status)) {
+	    _cairo_clip_fini (&local_clip);
+	    return status;
+	}
+
+	have_clip = TRUE;
+    }
+
+    i915_shader_init (&shader, dst, op, 1.);
+
+    status = i915_shader_acquire_pattern (&shader,
+					  &shader.source,
+					  source,
+					  &extents.bounded);
+    if (unlikely (status))
+	goto err_shader;
+
+    status = i915_shader_acquire_pattern (&shader,
+					  &shader.mask,
+					  mask,
+					  &extents.bounded);
+    if (unlikely (status))
+	goto err_shader;
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	if (unlikely (_cairo_status_is_error (status) ||
+		      status == CAIRO_INT_STATUS_NOTHING_TO_DO))
+	{
+	    goto err_shader;
+	}
+
+	need_clip_surface = status == CAIRO_INT_STATUS_UNSUPPORTED;
+	if (need_clip_surface)
+	    i915_shader_set_clip (&shader, clip);
+
+	if (clip_region != NULL) {
+	    cairo_rectangle_int_t rect;
+	    cairo_bool_t is_empty;
+
+	    status = CAIRO_STATUS_SUCCESS;
+	    cairo_region_get_extents (clip_region, &rect);
+	    is_empty = ! _cairo_rectangle_intersect (&extents.unbounded, &rect);
+	    if (unlikely (is_empty))
+		goto err_shader;
+
+	    is_empty = ! _cairo_rectangle_intersect (&extents.bounded, &rect);
+	    if (unlikely (is_empty && extents.is_bounded))
+		goto err_shader;
+
+	    if (cairo_region_num_rectangles (clip_region) == 1)
+		clip_region = NULL;
+	}
+    }
+
+    if (i915_surface_needs_tiling (dst)) {
+	ASSERT_NOT_REACHED;
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    device = i915_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto err_shader;
+
+    if (dst->deferred_clear) {
+	status = i915_surface_clear (dst);
+	if (unlikely (status))
+	    goto err_shader;
+    }
+
+    status = i915_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto err_device;
+
+    if (clip_region != NULL) {
+	unsigned int n, num_rectangles;
+
+	num_rectangles = cairo_region_num_rectangles (clip_region);
+	for (n = 0; n < num_rectangles; n++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (clip_region, n, &rect);
+
+	    shader.add_rectangle (&shader,
+				  rect.x, rect.y,
+				  rect.x + rect.width, rect.y + rect.height);
+	}
+    } else {
+	shader.add_rectangle (&shader,
+			      extents.bounded.x, extents.bounded.y,
+			      extents.bounded.x + extents.bounded.width,
+			      extents.bounded.y + extents.bounded.height);
+    }
+
+    if (! extents.is_bounded)
+	status = i915_fixup_unbounded (dst, &extents, clip);
+
+  err_device:
+    cairo_device_release (&device->intel.base.base);
+  err_shader:
+    i915_shader_fini (&shader);
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static cairo_int_status_t
+i915_surface_stroke (void			*abstract_dst,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_path_fixed_t		*path,
+		     const cairo_stroke_style_t	*stroke_style,
+		     const cairo_matrix_t	*ctm,
+		     const cairo_matrix_t	*ctm_inverse,
+		     double			 tolerance,
+		     cairo_antialias_t		 antialias,
+		     cairo_clip_t		*clip)
+{
+    i915_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    composite_polygon_info_t info;
+    cairo_box_t boxes_stack[32], *clip_boxes = boxes_stack;
+    int num_boxes = ARRAY_LENGTH (boxes_stack);
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  dst->intel.drm.width,
+							  dst->intel.drm.height,
+							  op, source,
+							  path, stroke_style, ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    if (_cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	have_clip = TRUE;
+    }
+
+    status = _cairo_clip_to_boxes (&clip, &extents, &clip_boxes, &num_boxes);
+    if (unlikely (status)) {
+	if (have_clip)
+	    _cairo_clip_fini (&local_clip);
+
+	return status;
+    }
+
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	_cairo_boxes_limit (&boxes, clip_boxes, num_boxes);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								stroke_style,
+								ctm,
+								&boxes);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = _clip_and_composite_boxes (dst, op, source,
+						&boxes, antialias,
+						&extents, clip, 1.);
+	}
+
+	_cairo_boxes_fini (&boxes);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    goto CLEANUP_BOXES;
+    }
+
+    _cairo_polygon_init (&info.polygon, clip_boxes, num_boxes);
+
+    status = _cairo_path_fixed_stroke_to_polygon (path,
+						  stroke_style,
+						  ctm, ctm_inverse,
+						  tolerance,
+						  &info.polygon);
+    if (unlikely (status))
+	goto CLEANUP_POLYGON;
+
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t rect;
+
+	_cairo_box_round_to_rectangle (&info.polygon.extents, &rect);
+	if (! _cairo_rectangle_intersect (&extents.bounded, &rect))
+	    goto CLEANUP_POLYGON;
+    }
+
+    if (info.polygon.num_edges == 0) {
+	if (! extents.is_bounded)
+	    status = i915_fixup_unbounded (dst, &extents, clip);
+
+	goto CLEANUP_POLYGON;
+    }
+
+    info.fill_rule = CAIRO_FILL_RULE_WINDING;
+    info.antialias = antialias;
+    status = i915_clip_and_composite_spans (dst, op, source, antialias,
+					    _composite_polygon_spans, &info,
+					    &extents, clip, 1.);
+
+CLEANUP_POLYGON:
+    _cairo_polygon_fini (&info.polygon);
+
+CLEANUP_BOXES:
+    if (clip_boxes != boxes_stack)
+	free (clip_boxes);
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static cairo_int_status_t
+i915_surface_fill (void			*abstract_dst,
+		   cairo_operator_t	 op,
+		   const cairo_pattern_t*source,
+		   cairo_path_fixed_t	*path,
+		   cairo_fill_rule_t	 fill_rule,
+		   double		 tolerance,
+		   cairo_antialias_t	 antialias,
+		   cairo_clip_t		*clip)
+{
+    return i915_surface_fill_with_alpha (abstract_dst, op, source, path, fill_rule, tolerance, antialias, clip, 1.);
+}
+
+static const cairo_surface_backend_t i915_surface_backend = {
+    CAIRO_SURFACE_TYPE_DRM,
+    _cairo_default_context_create,
+
+    i915_surface_create_similar,
+    i915_surface_finish,
+
+    NULL,
+    intel_surface_acquire_source_image,
+    intel_surface_release_source_image,
+
+    NULL, NULL, NULL,
+    NULL, /* composite */
+    NULL, /* fill */
+    NULL, /* trapezoids */
+    NULL, /* span */
+    NULL, /* check-span */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_drm_surface_get_extents,
+    NULL, /* old-glyphs */
+    _cairo_drm_surface_get_font_options,
+
+    i915_surface_flush,
+    NULL, /* mark_dirty */
+    intel_scaled_font_fini,
+    intel_scaled_glyph_fini,
+
+    i915_surface_paint,
+    i915_surface_mask,
+    i915_surface_stroke,
+    i915_surface_fill,
+    i915_surface_glyphs,
+};
+
+static void
+i915_surface_init (i915_surface_t *surface,
+		   cairo_drm_device_t *device,
+		   cairo_format_t format,
+		   int width, int height)
+{
+    intel_surface_init (&surface->intel, &i915_surface_backend, device,
+			format, width, height);
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FORMAT_ARGB32:
+	surface->map0 = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+	surface->colorbuf = COLR_BUF_ARGB8888 | DEPTH_FRMT_24_FIXED_8_OTHER;
+	break;
+    case CAIRO_FORMAT_RGB24:
+	surface->map0 = MAPSURF_32BIT | MT_32BIT_XRGB8888;
+	surface->colorbuf = COLR_BUF_ARGB8888 | DEPTH_FRMT_24_FIXED_8_OTHER;
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	surface->map0 = MAPSURF_16BIT | MT_16BIT_RGB565;
+	surface->colorbuf = COLR_BUF_RGB565;
+	break;
+    case CAIRO_FORMAT_A8:
+	surface->map0 = MAPSURF_8BIT | MT_8BIT_A8;
+	surface->colorbuf = COLR_BUF_8BIT | DEPTH_FRMT_24_FIXED_8_OTHER;
+	break;
+    }
+    surface->colorbuf |= DSTORG_HORT_BIAS (0x8) | DSTORG_VERT_BIAS (0x8);
+    surface->map0 |= ((height - 1) << MS3_HEIGHT_SHIFT) |
+		     ((width  - 1) << MS3_WIDTH_SHIFT);
+    surface->map1 = 0;
+
+    surface->is_current_texture = 0;
+    surface->deferred_clear = FALSE;
+
+    surface->offset = 0;
+
+    surface->stencil  = NULL;
+    surface->cache = NULL;
+}
+
+cairo_surface_t *
+i915_surface_create_internal (cairo_drm_device_t *base_dev,
+		              cairo_format_t format,
+			      int width, int height,
+			      uint32_t tiling,
+			      cairo_bool_t gpu_target)
+{
+    i915_surface_t *surface;
+    cairo_status_t status_ignored;
+
+    surface = _cairo_malloc (sizeof (i915_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    i915_surface_init (surface, base_dev, format, width, height);
+
+    if (width && height) {
+	uint32_t size, stride;
+	intel_bo_t *bo;
+
+	width = (width + 3) & -4;
+	stride = cairo_format_stride_for_width (surface->intel.drm.format, width);
+	/* check for tiny surfaces for which tiling is irrelevant */
+	if (height * stride <= 4096)
+	    tiling = I915_TILING_NONE;
+	if (tiling != I915_TILING_NONE && stride <= 512)
+	    tiling = I915_TILING_NONE;
+	if (tiling != I915_TILING_NONE) {
+	    if (height <= 8)
+		tiling = I915_TILING_NONE;
+	    else if (height <= 16)
+		tiling = I915_TILING_X;
+	}
+	/* large surfaces we need to blt, so force TILING_X */
+	if (height > 2048)
+	    tiling = I915_TILING_X;
+	/* but there is a maximum limit to the tiling pitch */
+	if (tiling != I915_TILING_NONE && stride > 8192)
+	    tiling = I915_TILING_NONE;
+
+	stride = i915_tiling_stride (tiling, stride);
+	assert (stride >= (uint32_t) cairo_format_stride_for_width (surface->intel.drm.format, width));
+	assert (tiling == I915_TILING_NONE || stride <= 8192);
+	height = i915_tiling_height (tiling, height);
+	if (height > 64*1024) {
+	    free (surface);
+	    cairo_device_destroy (&base_dev->base);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+	}
+
+	size = stride * height;
+	bo = intel_bo_create (to_intel_device (&base_dev->base),
+			      i915_tiling_size (tiling, size), size,
+			      gpu_target, tiling, stride);
+	if (bo == NULL) {
+	    status_ignored = _cairo_drm_surface_finish (&surface->intel.drm);
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+	assert (bo->base.size >= size);
+
+	surface->intel.drm.bo = &bo->base;
+	surface->intel.drm.stride = stride;
+
+	surface->map0 |= MS3_tiling (tiling);
+	surface->map1 = (stride/4 - 1) << MS4_PITCH_SHIFT;
+    }
+
+    return &surface->intel.drm.base;
+}
+
+static cairo_surface_t *
+i915_surface_create (cairo_drm_device_t *base_dev,
+		     cairo_format_t format,
+		     int width, int height)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    }
+
+    return i915_surface_create_internal (base_dev, format, width, height,
+	                                 I915_TILING_DEFAULT, TRUE);
+}
+
+static cairo_surface_t *
+i915_surface_create_for_name (cairo_drm_device_t *base_dev,
+			      unsigned int name,
+			      cairo_format_t format,
+			      int width, int height, int stride)
+{
+    i915_surface_t *surface;
+
+    /* Vol I, p134: size restrictions for textures */
+    /* Vol I, p129: destination surface stride must be a multiple of 32 bytes */
+    if (stride < cairo_format_stride_for_width (format, (width + 3) & -4) ||
+	stride & 31)
+    {
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+    }
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    }
+
+    surface = _cairo_malloc (sizeof (i915_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    i915_surface_init (surface, base_dev, format, width, height);
+
+    if (width && height) {
+	surface->intel.drm.stride = stride;
+	surface->map1 = (surface->intel.drm.stride/4 - 1) << MS4_PITCH_SHIFT;
+
+	surface->intel.drm.bo =
+	    &intel_bo_create_for_name (to_intel_device (&base_dev->base),
+				       name)->base;
+	if (unlikely (surface->intel.drm.bo == NULL)) {
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+	to_intel_bo (surface->intel.drm.bo)->stride = stride;
+
+	surface->map0 |= MS3_tiling (to_intel_bo (surface->intel.drm.bo)->tiling);
+    }
+
+    return &surface->intel.drm.base;
+}
+
+static cairo_status_t
+i915_buffer_cache_init (intel_buffer_cache_t *cache,
+		        i915_device_t *device,
+			cairo_format_t format,
+			int width, int height)
+{
+    const uint32_t tiling = I915_TILING_DEFAULT;
+    uint32_t stride, size;
+
+    assert ((width & 3) == 0);
+    assert ((height & 1) == 0);
+    cache->buffer.width = width;
+    cache->buffer.height = height;
+
+    switch (format) {
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_RGB16_565:
+	ASSERT_NOT_REACHED;
+    case CAIRO_FORMAT_ARGB32:
+	cache->buffer.map0 = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+	stride = width * 4;
+	break;
+    case CAIRO_FORMAT_A8:
+	cache->buffer.map0 = MAPSURF_8BIT | MT_8BIT_I8;
+	stride = width;
+	break;
+    }
+    assert ((stride & 7) == 0);
+    assert (i915_tiling_stride (tiling, stride) == stride);
+    assert (i915_tiling_height (tiling, height) == height);
+
+    size = height * stride;
+    assert (i915_tiling_size (tiling, size) == size);
+    cache->buffer.bo = intel_bo_create (&device->intel, size, size, FALSE, tiling, stride);
+    if (unlikely (cache->buffer.bo == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cache->buffer.stride = cache->buffer.bo->stride;
+
+    cache->buffer.map0 |= ((height - 1) << MS3_HEIGHT_SHIFT) |
+			  ((width  - 1) << MS3_WIDTH_SHIFT);
+    cache->buffer.map0 |= MS3_tiling (tiling);
+    cache->buffer.map1 = ((stride / 4) - 1) << MS4_PITCH_SHIFT;
+
+    cache->ref_count = 0;
+    cairo_list_init (&cache->link);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+i915_surface_t *
+i915_surface_create_from_cacheable_image_internal (i915_device_t *device,
+						   cairo_image_surface_t *image)
+{
+    i915_surface_t *surface;
+    cairo_status_t status;
+    cairo_list_t *caches;
+    intel_buffer_cache_t *cache;
+    cairo_rtree_node_t *node;
+    cairo_format_t format;
+    int width, height, bpp;
+
+    format = image->format;
+    if (format == CAIRO_FORMAT_A1)
+	format = CAIRO_FORMAT_A8;
+
+    width = image->width;
+    height = image->height;
+    if (width > IMAGE_CACHE_WIDTH/2 || height > IMAGE_CACHE_HEIGHT/2) {
+	surface = (i915_surface_t *)
+	    i915_surface_create_internal (&device->intel.base,
+					  format,
+					  width, height,
+					  I915_TILING_NONE, FALSE);
+	if (unlikely (surface->intel.drm.base.status))
+	    return surface;
+
+	status = intel_bo_put_image (&device->intel,
+				     to_intel_bo (surface->intel.drm.bo),
+				     image,
+				     0, 0,
+				     width, height,
+				     0, 0);
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&surface->intel.drm.base);
+	    return (i915_surface_t *) _cairo_surface_create_in_error (status);
+	}
+
+	return surface;
+    }
+
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	return (i915_surface_t *) _cairo_surface_create_in_error (status);
+
+    switch (image->format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_RGB16_565:
+	caches = &device->image_caches[0];
+	format = CAIRO_FORMAT_ARGB32;
+	bpp = 4;
+	break;
+    case CAIRO_FORMAT_A8:
+    case CAIRO_FORMAT_A1:
+	caches = &device->image_caches[1];
+	format = CAIRO_FORMAT_A8;
+	bpp = 1;
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ASSERT_NOT_REACHED;
+	status = _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+	goto CLEANUP_DEVICE;
+    }
+
+    node = NULL;
+    cairo_list_foreach_entry (cache, intel_buffer_cache_t, caches, link) {
+	if (! intel_bo_is_inactive (&device->intel, cache->buffer.bo))
+	    continue;
+
+	status = _cairo_rtree_insert (&cache->rtree, width, height, &node);
+	if (unlikely (_cairo_status_is_error (status)))
+	    goto CLEANUP_DEVICE;
+	if (status == CAIRO_STATUS_SUCCESS)
+	    break;
+    }
+    if (node == NULL) {
+	cache = _cairo_malloc (sizeof (intel_buffer_cache_t));
+	if (unlikely (cache == NULL)) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto CLEANUP_DEVICE;
+	}
+
+	status = i915_buffer_cache_init (cache, device, format,
+					 IMAGE_CACHE_WIDTH,
+					 IMAGE_CACHE_HEIGHT);
+	if (unlikely (status)) {
+	    free (cache);
+	    goto CLEANUP_DEVICE;
+	}
+
+	_cairo_rtree_init (&cache->rtree,
+			   IMAGE_CACHE_WIDTH,
+			   IMAGE_CACHE_HEIGHT,
+			   4,
+			   sizeof (i915_image_private_t));
+
+	status = _cairo_rtree_insert (&cache->rtree, width, height, &node);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	cairo_list_init (&cache->link);
+    }
+    cairo_list_move (&cache->link, caches);
+    ((i915_image_private_t *) node)->container = cache;
+
+    status = intel_bo_put_image (&device->intel,
+				 cache->buffer.bo,
+				 image,
+				 0, 0,
+				 width, height,
+				 node->x, node->y);
+    if (unlikely (status))
+	goto CLEANUP_CACHE;
+
+    surface = _cairo_malloc (sizeof (i915_surface_t));
+    if (unlikely (surface == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_CACHE;
+    }
+
+    i915_surface_init (surface, &device->intel.base,
+		       format, width, height);
+
+    surface->intel.drm.stride = cache->buffer.stride;
+
+    surface->map0 |= MS3_tiling (cache->buffer.bo->tiling);
+    surface->map1 = (surface->intel.drm.stride/4 - 1) << MS4_PITCH_SHIFT;
+
+    surface->intel.drm.bo = &intel_bo_reference (cache->buffer.bo)->base;
+    surface->offset = node->y * cache->buffer.stride + bpp * node->x;
+
+    surface->cache = (i915_image_private_t *) node;
+    cache->ref_count++;
+
+    cairo_device_release (&device->intel.base.base);
+
+    return surface;
+
+CLEANUP_CACHE:
+    _cairo_rtree_node_destroy (&cache->rtree, node);
+    if (cache->ref_count == 0) {
+	intel_bo_destroy (&device->intel, cache->buffer.bo);
+	_cairo_rtree_fini (&cache->rtree);
+	cairo_list_del (&cache->link);
+	free (cache);
+    }
+CLEANUP_DEVICE:
+    cairo_device_release (&device->intel.base.base);
+    return (i915_surface_t *) _cairo_surface_create_in_error (status);
+}
+
+static cairo_surface_t *
+i915_surface_create_from_cacheable_image (cairo_drm_device_t *device,
+					  cairo_surface_t *source)
+{
+    i915_surface_t *surface;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_status_t status;
+
+    status = _cairo_surface_acquire_source_image (source, &image, &image_extra);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    surface = i915_surface_create_from_cacheable_image_internal ((i915_device_t *) device, image);
+
+    _cairo_surface_release_source_image (source, image, image_extra);
+
+    return &surface->intel.drm.base;
+}
+
+static cairo_status_t
+i915_surface_enable_scan_out (void *abstract_surface)
+{
+    i915_surface_t *surface = abstract_surface;
+    intel_bo_t *bo;
+    cairo_status_t status;
+
+    if (unlikely (surface->intel.drm.bo == NULL))
+	return _cairo_error (CAIRO_STATUS_INVALID_SIZE);
+
+    bo = to_intel_bo (surface->intel.drm.bo);
+    if (bo->tiling == I915_TILING_Y) {
+	status = i915_surface_batch_flush (surface);
+	if (unlikely (status))
+	    return status;
+
+	bo->tiling = I915_TILING_X;
+	surface->map0 &= ~MS3_tiling (I915_TILING_Y);
+	surface->map0 |= MS3_tiling (I915_TILING_X);
+    }
+
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+i915_device_flush (cairo_drm_device_t *device)
+{
+    cairo_status_t status;
+
+    if (unlikely (device->base.finished))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = cairo_device_acquire (&device->base);
+    if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	status = i915_batch_flush ((i915_device_t *) device);
+	cairo_device_release (&device->base);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+i915_device_throttle (cairo_drm_device_t *device)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&device->base);
+    if (unlikely (status))
+	return status;
+
+    status = i915_batch_flush ((i915_device_t *) device);
+    intel_throttle ((intel_device_t *) device);
+
+    cairo_device_release (&device->base);
+
+    return status;
+}
+
+static void
+i915_device_destroy (void *data)
+{
+    i915_device_t *device = data;
+
+    if (device->last_vbo)
+	intel_bo_destroy (&device->intel, device->last_vbo);
+
+    i915_batch_cleanup (device);
+
+    intel_device_fini (&device->intel);
+    free (device);
+}
+
+COMPILE_TIME_ASSERT (sizeof (i915_batch_setup) == sizeof (((i915_device_t *)0)->batch_header));
+COMPILE_TIME_ASSERT (offsetof (i915_device_t, batch_base) == offsetof (i915_device_t, batch_header) + sizeof (i915_batch_setup));
+
+cairo_drm_device_t *
+_cairo_drm_i915_device_create (int fd, dev_t dev_id, int vendor_id, int chip_id)
+{
+    i915_device_t *device;
+    cairo_status_t status;
+    uint64_t gtt_size;
+    int n;
+
+    if (! intel_info (fd, &gtt_size))
+	return NULL;
+
+    device = _cairo_malloc (sizeof (i915_device_t));
+    if (device == NULL)
+	return (cairo_drm_device_t *) _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = intel_device_init (&device->intel, fd);
+    if (unlikely (status)) {
+	free (device);
+	return (cairo_drm_device_t *) _cairo_device_create_in_error (status);
+    }
+
+    device->debug = 0;
+    if (getenv ("CAIRO_DEBUG_DRM") != NULL)
+	device->debug = I915_DEBUG_SYNC;
+
+    n = intel_get (fd, I915_PARAM_NUM_FENCES_AVAIL);
+    if (n == 0)
+	n = 8;
+    device->batch.fences_avail = n - 2; /* conservative */
+
+    device->batch.gtt_avail_size = device->intel.gtt_avail_size / 4;
+    device->batch.est_gtt_size = I915_BATCH_SIZE;
+    device->batch.total_gtt_size = I915_BATCH_SIZE;
+    device->batch.exec_count = 0;
+    device->batch.reloc_count = 0;
+    device->batch.used = 0;
+    device->batch.fences = 0;
+
+    memcpy (device->batch_header, i915_batch_setup, sizeof (i915_batch_setup));
+    device->vbo = 0;
+    device->vbo_offset = 0;
+    device->vbo_used = 0;
+    device->vertex_index = 0;
+    device->vertex_count = 0;
+    device->last_vbo = NULL;
+
+    for (n = 0; n < ARRAY_LENGTH (device->image_caches); n++)
+	cairo_list_init (&device->image_caches[n]);
+
+    device->intel.base.surface.create = i915_surface_create;
+    device->intel.base.surface.create_for_name = i915_surface_create_for_name;
+    device->intel.base.surface.create_from_cacheable_image = i915_surface_create_from_cacheable_image;
+
+    device->intel.base.surface.flink = _cairo_drm_surface_flink;
+    device->intel.base.surface.enable_scan_out = i915_surface_enable_scan_out;
+    device->intel.base.surface.map_to_image = intel_surface_map_to_image;
+
+    device->intel.base.device.flush = i915_device_flush;
+    device->intel.base.device.throttle = i915_device_throttle;
+    device->intel.base.device.destroy = i915_device_destroy;
+
+    device->floats_per_vertex = 0;
+    device->current_source = NULL;
+    device->current_mask = NULL;
+    device->current_clip = NULL;
+
+    i915_device_reset (device);
+
+    return _cairo_drm_device_init (&device->intel.base,
+				   fd, dev_id, vendor_id, chip_id,
+				   16*1024);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c
new file mode 100644
index 0000000..1ef0a6f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-glyphs.c
@@ -0,0 +1,504 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-drm-i965-private.h"
+#include "cairo-error-private.h"
+#include "cairo-rtree-private.h"
+
+typedef struct _i965_glyphs i965_glyphs_t;
+
+typedef float *
+(*i965_get_rectangle_func_t) (i965_glyphs_t *glyphs);
+
+struct _i965_glyphs {
+    i965_get_rectangle_func_t get_rectangle;
+    i965_shader_t shader;
+
+    struct i965_vbo head, *tail;
+
+    unsigned int vbo_offset;
+    float *vbo_base;
+};
+
+static float *
+i965_glyphs_emit_rectangle (i965_glyphs_t *glyphs)
+{
+    return i965_add_rectangle (glyphs->shader.device);
+}
+
+static float *
+i965_glyphs_accumulate_rectangle (i965_glyphs_t *glyphs)
+{
+    float *vertices;
+    uint32_t size;
+
+    size = glyphs->shader.device->rectangle_size;
+    if (unlikely (glyphs->vbo_offset + size > I965_VERTEX_SIZE)) {
+	struct i965_vbo *vbo;
+
+	vbo = _cairo_malloc (sizeof (struct i965_vbo));
+	if (unlikely (vbo == NULL)) {
+	    /* throw error! */
+	}
+
+	glyphs->tail->next = vbo;
+	glyphs->tail = vbo;
+
+	vbo->next = NULL;
+	vbo->bo = intel_bo_create (&glyphs->shader.device->intel,
+				   I965_VERTEX_SIZE, I965_VERTEX_SIZE,
+				   FALSE, I915_TILING_NONE, 0);
+	vbo->count = 0;
+
+	glyphs->vbo_offset = 0;
+	glyphs->vbo_base = intel_bo_map (&glyphs->shader.device->intel, vbo->bo);
+    }
+
+    vertices = glyphs->vbo_base + glyphs->vbo_offset;
+    glyphs->vbo_offset += size;
+    glyphs->tail->count += 3;
+
+    return vertices;
+}
+
+static void
+i965_add_glyph_rectangle (i965_glyphs_t *glyphs,
+			  int x1, int y1,
+			  int x2, int y2,
+			  intel_glyph_t *glyph)
+{
+    float *v;
+
+    /* Each vertex is:
+     *   2 vertex coordinates
+     *   1 glyph texture coordinate
+     */
+
+    v = glyphs->get_rectangle (glyphs);
+
+    /* bottom right */
+    *v++ = x2; *v++ = y2;
+    *v++ = glyph->texcoord[0];
+
+    /* bottom left */
+    *v++ = x1; *v++ = y2;
+    *v++ = glyph->texcoord[1];
+
+    /* top left */
+    *v++ = x1; *v++ = y1;
+    *v++ = glyph->texcoord[2];
+}
+
+static cairo_status_t
+i965_surface_mask_internal (i965_surface_t *dst,
+			    cairo_operator_t		 op,
+			    const cairo_pattern_t	*source,
+			    i965_surface_t *mask,
+			    cairo_clip_t		*clip,
+			    const cairo_composite_rectangles_t *extents)
+{
+    i965_device_t *device;
+    i965_shader_t shader;
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status;
+
+    i965_shader_init (&shader, dst, op);
+
+    status = i965_shader_acquire_pattern (&shader, &shader.source,
+					  source, &extents->bounded);
+    if (unlikely (status))
+	return status;
+
+    shader.mask.type.vertex = VS_NONE;
+    shader.mask.type.fragment = FS_SURFACE;
+    shader.mask.base.content = mask->intel.drm.base.content;
+    shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST);
+    shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE);
+
+    cairo_matrix_init_translate (&shader.mask.base.matrix,
+				 -extents->bounded.x,
+				 -extents->bounded.y);
+    cairo_matrix_scale (&shader.mask.base.matrix,
+			1. / mask->intel.drm.width,
+			1. / mask->intel.drm.height);
+
+    shader.mask.base.bo = to_intel_bo (mask->intel.drm.bo);
+    shader.mask.base.format = mask->intel.drm.format;
+    shader.mask.base.width = mask->intel.drm.width;
+    shader.mask.base.height = mask->intel.drm.height;
+    shader.mask.base.stride = mask->intel.drm.stride;
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+	if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1)
+	    clip_region = NULL;
+
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    i965_shader_set_clip (&shader, clip);
+    }
+
+    status = cairo_device_acquire (dst->intel.drm.base.device);
+    if (unlikely (status))
+	goto CLEANUP_SHADER;
+
+    device = i965_device (dst);
+
+    status = i965_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto CLEANUP_DEVICE;
+
+    if (clip_region != NULL) {
+	unsigned int n, num_rectangles;
+
+	num_rectangles = cairo_region_num_rectangles (clip_region);
+	for (n = 0; n < num_rectangles; n++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (clip_region, n, &rect);
+
+	    i965_shader_add_rectangle (&shader,
+				       rect.x, rect.y,
+				       rect.width, rect.height);
+	}
+    } else {
+	i965_shader_add_rectangle (&shader,
+				   extents->bounded.x,
+				   extents->bounded.y,
+				   extents->bounded.width,
+				   extents->bounded.height);
+    }
+
+    if (! extents->is_bounded)
+	status = i965_fixup_unbounded (dst, extents, clip);
+
+  CLEANUP_DEVICE:
+    cairo_device_release (&device->intel.base.base);
+  CLEANUP_SHADER:
+    i965_shader_fini (&shader);
+    return status;
+}
+
+cairo_int_status_t
+i965_surface_glyphs (void			*abstract_surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_glyph_t		*g,
+		     int			 num_glyphs,
+		     cairo_scaled_font_t	*scaled_font,
+		     cairo_clip_t		*clip,
+		     int *num_remaining)
+{
+    i965_surface_t *surface = abstract_surface;
+    i965_surface_t *mask = NULL;
+    i965_device_t *device;
+    i965_glyphs_t glyphs;
+    cairo_composite_rectangles_t extents;
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    cairo_bool_t overlap;
+    cairo_region_t *clip_region = NULL;
+    intel_bo_t *last_bo = NULL;
+    cairo_scaled_glyph_t *glyph_cache[64];
+    cairo_status_t status;
+    int mask_x = 0, mask_y = 0;
+    int i = 0;
+
+    *num_remaining = 0;
+    status = _cairo_composite_rectangles_init_for_glyphs (&extents,
+							  surface->intel.drm.width,
+							  surface->intel.drm.height,
+							  op, source,
+							  scaled_font,
+							  g, num_glyphs,
+							  clip,
+							  &overlap);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL && _cairo_clip_contains_rectangle (clip, &extents.mask))
+	clip = NULL;
+
+    if (clip != NULL && extents.is_bounded) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	status = _cairo_clip_rectangle (clip, &extents.bounded);
+	if (unlikely (status))
+	    return status;
+
+	have_clip = TRUE;
+    }
+
+    if (overlap || ! extents.is_bounded) {
+	cairo_format_t format;
+
+	format = CAIRO_FORMAT_A8;
+	if (scaled_font->options.antialias == CAIRO_ANTIALIAS_SUBPIXEL)
+	    format = CAIRO_FORMAT_ARGB32;
+
+	mask = (i965_surface_t *)
+	    i965_surface_create_internal (&i965_device (surface)->intel.base,
+					  format,
+					  extents.bounded.width,
+					  extents.bounded.height,
+					  I965_TILING_DEFAULT,
+					  TRUE);
+	if (unlikely (mask->intel.drm.base.status))
+	    return mask->intel.drm.base.status;
+
+	status = _cairo_surface_paint (&mask->intel.drm.base,
+				       CAIRO_OPERATOR_CLEAR,
+				       &_cairo_pattern_clear.base,
+				       NULL);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&mask->intel.drm.base);
+	    return status;
+	}
+
+	i965_shader_init (&glyphs.shader, mask, CAIRO_OPERATOR_ADD);
+
+	status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source,
+					      &_cairo_pattern_white.base,
+					      &extents.bounded);
+	if (unlikely (status)) {
+	    cairo_surface_destroy (&mask->intel.drm.base);
+	    return status;
+	}
+
+	mask_x = -extents.bounded.x;
+	mask_y = -extents.bounded.y;
+    } else {
+	i965_shader_init (&glyphs.shader, surface, op);
+
+	status = i965_shader_acquire_pattern (&glyphs.shader, &glyphs.shader.source,
+					      source, &extents.bounded);
+	if (unlikely (status))
+	    return status;
+
+	if (clip != NULL) {
+	    status = _cairo_clip_get_region (clip, &clip_region);
+	    assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+	    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+		i965_shader_set_clip (&glyphs.shader, clip);
+	}
+    }
+
+    glyphs.head.next = NULL;
+    glyphs.head.bo = NULL;
+    glyphs.head.count = 0;
+    glyphs.tail = &glyphs.head;
+
+    device = i965_device (surface);
+    if (mask != NULL || clip_region == NULL) {
+	glyphs.get_rectangle = i965_glyphs_emit_rectangle;
+    } else {
+	glyphs.get_rectangle = i965_glyphs_accumulate_rectangle;
+	glyphs.head.bo = intel_bo_create (&device->intel,
+					  I965_VERTEX_SIZE, I965_VERTEX_SIZE,
+					  FALSE, I915_TILING_NONE, 0);
+	if (unlikely (glyphs.head.bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	glyphs.vbo_base = intel_bo_map (&device->intel, glyphs.head.bo);
+    }
+    glyphs.vbo_offset = 0;
+
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto CLEANUP_GLYPHS;
+
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    //private = _cairo_scaled_font_get_device (scaled_font, device);
+    if (scaled_font->surface_private == NULL) {
+	scaled_font->surface_private = device;
+	scaled_font->surface_backend = surface->intel.drm.base.backend;
+	cairo_list_add (&scaled_font->link, &device->intel.fonts);
+    }
+
+    memset (glyph_cache, 0, sizeof (glyph_cache));
+
+    for (i = 0; i < num_glyphs; i++) {
+	cairo_scaled_glyph_t *scaled_glyph;
+	int x, y, x1, x2, y1, y2;
+	int cache_index = g[i].index % ARRAY_LENGTH (glyph_cache);
+	intel_glyph_t *glyph;
+
+	scaled_glyph = glyph_cache[cache_index];
+	if (scaled_glyph == NULL ||
+	    _cairo_scaled_glyph_index (scaled_glyph) != g[i].index)
+	{
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 g[i].index,
+						 CAIRO_SCALED_GLYPH_INFO_METRICS,
+						 &scaled_glyph);
+	    if (unlikely (status))
+		goto FINISH;
+
+	    glyph_cache[cache_index] = scaled_glyph;
+	}
+
+	if (unlikely (scaled_glyph->metrics.width  == 0 ||
+		      scaled_glyph->metrics.height == 0))
+	{
+	    continue;
+	}
+
+	/* XXX glyph images are snapped to pixel locations */
+	x = _cairo_lround (g[i].x);
+	y = _cairo_lround (g[i].y);
+
+	x1 = x + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x);
+	y1 = y + _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y);
+	x2 = x + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x);
+	y2 = y + _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y);
+
+	if (x2 < extents.bounded.x ||
+	    y2 < extents.bounded.y ||
+	    x1 > extents.bounded.x + extents.bounded.width ||
+	    y1 > extents.bounded.y + extents.bounded.height)
+	{
+	    continue;
+	}
+
+	if (scaled_glyph->surface_private == NULL) {
+	    status = intel_get_glyph (&device->intel, scaled_font, scaled_glyph);
+	    if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO)) {
+		status = CAIRO_STATUS_SUCCESS;
+		continue;
+	    }
+	    if (unlikely (status))
+		goto FINISH;
+	}
+	glyph = intel_glyph_pin (scaled_glyph->surface_private);
+
+	if (glyph->cache->buffer.bo != last_bo) {
+	    intel_buffer_cache_t *cache = glyph->cache;
+
+	    glyphs.shader.mask.type.vertex   = VS_GLYPHS;
+	    glyphs.shader.mask.type.fragment = FS_GLYPHS;
+	    glyphs.shader.mask.type.pattern  = PATTERN_BASE;
+
+	    glyphs.shader.mask.base.bo = cache->buffer.bo;
+	    glyphs.shader.mask.base.format = cache->buffer.format;
+	    glyphs.shader.mask.base.width  = cache->buffer.width;
+	    glyphs.shader.mask.base.height = cache->buffer.height;
+	    glyphs.shader.mask.base.stride = cache->buffer.stride;
+	    glyphs.shader.mask.base.filter = i965_filter (CAIRO_FILTER_NEAREST);
+	    glyphs.shader.mask.base.extend = i965_extend (CAIRO_EXTEND_NONE);
+	    glyphs.shader.mask.base.content = CAIRO_CONTENT_ALPHA; /* XXX */
+
+	    glyphs.shader.committed = FALSE;
+	    status = i965_shader_commit (&glyphs.shader, device);
+	    if (unlikely (status))
+		goto FINISH;
+
+	    last_bo = cache->buffer.bo;
+	}
+
+	x2 = x1 + glyph->width;
+	y2 = y1 + glyph->height;
+
+	if (mask_x)
+	    x1 += mask_x, x2 += mask_x;
+	if (mask_y)
+	    y1 += mask_y, y2 += mask_y;
+
+	i965_add_glyph_rectangle (&glyphs, x1, y1, x2, y2, glyph);
+    }
+
+    if (mask != NULL && clip_region != NULL)
+	i965_clipped_vertices (device, &glyphs.head, clip_region);
+
+    status = CAIRO_STATUS_SUCCESS;
+  FINISH:
+    _cairo_scaled_font_thaw_cache (scaled_font);
+    cairo_device_release (surface->intel.drm.base.device);
+  CLEANUP_GLYPHS:
+    i965_shader_fini (&glyphs.shader);
+
+    if (glyphs.head.bo != NULL) {
+	struct i965_vbo *vbo, *next;
+
+	intel_bo_destroy (&device->intel, glyphs.head.bo);
+	for (vbo = glyphs.head.next; vbo != NULL; vbo = next) {
+	    next = vbo->next;
+	    intel_bo_destroy (&device->intel, vbo->bo);
+	    free (vbo);
+	}
+    }
+
+    if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) {
+	cairo_path_fixed_t path;
+
+	_cairo_path_fixed_init (&path);
+	status = _cairo_scaled_font_glyph_path (scaled_font,
+						g + i, num_glyphs - i,
+						&path);
+	if (mask_x | mask_y) {
+	    _cairo_path_fixed_translate (&path,
+					 _cairo_fixed_from_int (mask_x),
+					 _cairo_fixed_from_int (mask_y));
+	}
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = surface->intel.drm.base.backend->fill (glyphs.shader.target,
+							    glyphs.shader.op,
+							    mask != NULL ? &_cairo_pattern_white.base : source,
+							    &path,
+							    CAIRO_FILL_RULE_WINDING,
+							    0,
+							    scaled_font->options.antialias,
+							    clip);
+	}
+	_cairo_path_fixed_fini (&path);
+    }
+
+    if (mask != NULL) {
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = i965_surface_mask_internal (surface, op, source, mask,
+					         clip, &extents);
+	}
+	cairo_surface_finish (&mask->intel.drm.base);
+	cairo_surface_destroy (&mask->intel.drm.base);
+    }
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i965-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-private.h
new file mode 100644
index 0000000..79568a6
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-private.h
@@ -0,0 +1,737 @@
+#ifndef CAIRO_DRM_I965_PRIVATE_H
+#define CAIRO_DRM_I965_PRIVATE_H
+
+#include "cairo-drm-intel-private.h"
+
+#include "cairo-hash-private.h"
+#include "cairo-freelist-private.h"
+
+#include "cairo-drm-intel-brw-defines.h"
+
+#include <setjmp.h>
+
+#define BRW_MI_GLOBAL_SNAPSHOT_RESET   (1 << 3)
+
+/*
+ * New regs for broadwater -- we need to split this file up sensibly somehow.
+ */
+#define BRW_3D(Pipeline,Opcode,Subopcode) ((3 << 29) | \
+					   ((Pipeline) << 27) | \
+					   ((Opcode) << 24) | \
+					   ((Subopcode) << 16))
+
+#define BRW_URB_FENCE				BRW_3D(0, 0, 0)
+#define BRW_CS_URB_STATE			BRW_3D(0, 0, 1)
+#define BRW_CONSTANT_BUFFER			BRW_3D(0, 0, 2)
+#define BRW_STATE_PREFETCH			BRW_3D(0, 0, 3)
+
+#define BRW_STATE_BASE_ADDRESS			BRW_3D(0, 1, 1)
+#define BRW_STATE_SIP				BRW_3D(0, 1, 2)
+#define BRW_PIPELINE_SELECT			BRW_3D(0, 1, 4)
+
+#define NEW_PIPELINE_SELECT			BRW_3D(1, 1, 4)
+
+#define BRW_MEDIA_STATE_POINTERS		BRW_3D(2, 0, 0)
+#define BRW_MEDIA_OBJECT			BRW_3D(2, 1, 0)
+
+#define BRW_3DSTATE_PIPELINED_POINTERS		BRW_3D(3, 0, 0)
+#define BRW_3DSTATE_BINDING_TABLE_POINTERS	BRW_3D(3, 0, 1)
+#define BRW_3DSTATE_VERTEX_BUFFERS		BRW_3D(3, 0, 8)
+#define BRW_3DSTATE_VERTEX_ELEMENTS		BRW_3D(3, 0, 9)
+#define BRW_3DSTATE_INDEX_BUFFER		BRW_3D(3, 0, 0xa)
+#define BRW_3DSTATE_VF_STATISTICS		BRW_3D(3, 0, 0xb)
+
+#define BRW_3DSTATE_DRAWING_RECTANGLE		BRW_3D(3, 1, 0)
+#define BRW_3DSTATE_CONSTANT_COLOR		BRW_3D(3, 1, 1)
+#define BRW_3DSTATE_SAMPLER_PALETTE_LOAD	BRW_3D(3, 1, 2)
+#define BRW_3DSTATE_CHROMA_KEY			BRW_3D(3, 1, 4)
+#define BRW_3DSTATE_DEPTH_BUFFER		BRW_3D(3, 1, 5)
+#define BRW_3DSTATE_POLY_STIPPLE_OFFSET		BRW_3D(3, 1, 6)
+#define BRW_3DSTATE_POLY_STIPPLE_PATTERN	BRW_3D(3, 1, 7)
+#define BRW_3DSTATE_LINE_STIPPLE		BRW_3D(3, 1, 8)
+#define BRW_3DSTATE_GLOBAL_DEPTH_OFFSET_CLAMP	BRW_3D(3, 1, 9)
+/* These two are BLC and CTG only, not BW or CL */
+#define BRW_3DSTATE_AA_LINE_PARAMS		BRW_3D(3, 1, 0xa)
+#define BRW_3DSTATE_GS_SVB_INDEX		BRW_3D(3, 1, 0xb)
+
+#define BRW_PIPE_CONTROL			BRW_3D(3, 2, 0)
+
+#define BRW_3DPRIMITIVE				BRW_3D(3, 3, 0)
+
+#define PIPELINE_SELECT_3D		0
+#define PIPELINE_SELECT_MEDIA		1
+
+#define UF0_CS_REALLOC			(1 << 13)
+#define UF0_VFE_REALLOC			(1 << 12)
+#define UF0_SF_REALLOC			(1 << 11)
+#define UF0_CLIP_REALLOC		(1 << 10)
+#define UF0_GS_REALLOC			(1 << 9)
+#define UF0_VS_REALLOC			(1 << 8)
+#define UF1_CLIP_FENCE_SHIFT		20
+#define UF1_GS_FENCE_SHIFT		10
+#define UF1_VS_FENCE_SHIFT		0
+#define UF2_CS_FENCE_SHIFT		20
+#define UF2_VFE_FENCE_SHIFT		10
+#define UF2_SF_FENCE_SHIFT		0
+
+/* for BRW_STATE_BASE_ADDRESS */
+#define BASE_ADDRESS_MODIFY		(1 << 0)
+
+/* for BRW_3DSTATE_PIPELINED_POINTERS */
+#define BRW_GS_DISABLE		       0
+#define BRW_GS_ENABLE		       1
+#define BRW_CLIP_DISABLE	       0
+#define BRW_CLIP_ENABLE		       1
+
+/* for BRW_PIPE_CONTROL */
+#define BRW_PIPE_CONTROL_NOWRITE       (0 << 14)
+#define BRW_PIPE_CONTROL_WRITE_QWORD   (1 << 14)
+#define BRW_PIPE_CONTROL_WRITE_DEPTH   (2 << 14)
+#define BRW_PIPE_CONTROL_WRITE_TIME    (3 << 14)
+#define BRW_PIPE_CONTROL_DEPTH_STALL   (1 << 13)
+#define BRW_PIPE_CONTROL_WC_FLUSH      (1 << 12)
+#define BRW_PIPE_CONTROL_IS_FLUSH      (1 << 11)
+#define BRW_PIPE_CONTROL_NOTIFY_ENABLE (1 << 8)
+#define BRW_PIPE_CONTROL_GLOBAL_GTT    (1 << 2)
+#define BRW_PIPE_CONTROL_LOCAL_PGTT    (0 << 2)
+
+/* VERTEX_BUFFER_STATE Structure */
+#define VB0_BUFFER_INDEX_SHIFT		27
+#define VB0_VERTEXDATA			(0 << 26)
+#define VB0_INSTANCEDATA		(1 << 26)
+#define VB0_BUFFER_PITCH_SHIFT		0
+
+/* VERTEX_ELEMENT_STATE Structure */
+#define VE0_VERTEX_BUFFER_INDEX_SHIFT	27
+#define VE0_VALID			(1 << 26)
+#define VE0_FORMAT_SHIFT		16
+#define VE0_OFFSET_SHIFT		0
+#define VE1_VFCOMPONENT_0_SHIFT		28
+#define VE1_VFCOMPONENT_1_SHIFT		24
+#define VE1_VFCOMPONENT_2_SHIFT		20
+#define VE1_VFCOMPONENT_3_SHIFT		16
+#define VE1_DESTINATION_ELEMENT_OFFSET_SHIFT	0
+
+/* 3DPRIMITIVE bits */
+#define BRW_3DPRIMITIVE_VERTEX_SEQUENTIAL (0 << 15)
+#define BRW_3DPRIMITIVE_VERTEX_RANDOM	  (1 << 15)
+/* Primitive types are in brw_defines.h */
+#define BRW_3DPRIMITIVE_TOPOLOGY_SHIFT	  10
+
+#define BRW_SVG_CTL		       0x7400
+
+#define BRW_SVG_CTL_GS_BA	       (0 << 8)
+#define BRW_SVG_CTL_SS_BA	       (1 << 8)
+#define BRW_SVG_CTL_IO_BA	       (2 << 8)
+#define BRW_SVG_CTL_GS_AUB	       (3 << 8)
+#define BRW_SVG_CTL_IO_AUB	       (4 << 8)
+#define BRW_SVG_CTL_SIP		       (5 << 8)
+
+#define BRW_SVG_RDATA		       0x7404
+#define BRW_SVG_WORK_CTL	       0x7408
+
+#define BRW_VF_CTL		       0x7500
+
+#define BRW_VF_CTL_SNAPSHOT_COMPLETE		   (1 << 31)
+#define BRW_VF_CTL_SNAPSHOT_MUX_SELECT_THREADID	   (0 << 8)
+#define BRW_VF_CTL_SNAPSHOT_MUX_SELECT_VF_DEBUG	   (1 << 8)
+#define BRW_VF_CTL_SNAPSHOT_TYPE_VERTEX_SEQUENCE   (0 << 4)
+#define BRW_VF_CTL_SNAPSHOT_TYPE_VERTEX_INDEX	   (1 << 4)
+#define BRW_VF_CTL_SKIP_INITIAL_PRIMITIVES	   (1 << 3)
+#define BRW_VF_CTL_MAX_PRIMITIVES_LIMIT_ENABLE	   (1 << 2)
+#define BRW_VF_CTL_VERTEX_RANGE_LIMIT_ENABLE	   (1 << 1)
+#define BRW_VF_CTL_SNAPSHOT_ENABLE	     	   (1 << 0)
+
+#define BRW_VF_STRG_VAL		       0x7504
+#define BRW_VF_STR_VL_OVR	       0x7508
+#define BRW_VF_VC_OVR		       0x750c
+#define BRW_VF_STR_PSKIP	       0x7510
+#define BRW_VF_MAX_PRIM		       0x7514
+#define BRW_VF_RDATA		       0x7518
+
+#define BRW_VS_CTL		       0x7600
+#define BRW_VS_CTL_SNAPSHOT_COMPLETE		   (1 << 31)
+#define BRW_VS_CTL_SNAPSHOT_MUX_VERTEX_0	   (0 << 8)
+#define BRW_VS_CTL_SNAPSHOT_MUX_VERTEX_1	   (1 << 8)
+#define BRW_VS_CTL_SNAPSHOT_MUX_VALID_COUNT	   (2 << 8)
+#define BRW_VS_CTL_SNAPSHOT_MUX_VS_KERNEL_POINTER  (3 << 8)
+#define BRW_VS_CTL_SNAPSHOT_ALL_THREADS		   (1 << 2)
+#define BRW_VS_CTL_THREAD_SNAPSHOT_ENABLE	   (1 << 1)
+#define BRW_VS_CTL_SNAPSHOT_ENABLE		   (1 << 0)
+
+#define BRW_VS_STRG_VAL		       0x7604
+#define BRW_VS_RDATA		       0x7608
+
+#define BRW_SF_CTL		       0x7b00
+#define BRW_SF_CTL_SNAPSHOT_COMPLETE		   (1 << 31)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_0_FF_ID	   (0 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_0_REL_COUNT (1 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_1_FF_ID	   (2 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_1_REL_COUNT (3 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_2_FF_ID	   (4 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_2_REL_COUNT (5 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_VERTEX_COUNT	   (6 << 8)
+#define BRW_SF_CTL_SNAPSHOT_MUX_SF_KERNEL_POINTER  (7 << 8)
+#define BRW_SF_CTL_MIN_MAX_PRIMITIVE_RANGE_ENABLE  (1 << 4)
+#define BRW_SF_CTL_DEBUG_CLIP_RECTANGLE_ENABLE	   (1 << 3)
+#define BRW_SF_CTL_SNAPSHOT_ALL_THREADS		   (1 << 2)
+#define BRW_SF_CTL_THREAD_SNAPSHOT_ENABLE	   (1 << 1)
+#define BRW_SF_CTL_SNAPSHOT_ENABLE		   (1 << 0)
+
+#define BRW_SF_STRG_VAL		       0x7b04
+#define BRW_SF_RDATA		       0x7b18
+
+#define BRW_WIZ_CTL		       0x7c00
+#define BRW_WIZ_CTL_SNAPSHOT_COMPLETE		   (1 << 31)
+#define BRW_WIZ_CTL_SUBSPAN_INSTANCE_SHIFT	   16
+#define BRW_WIZ_CTL_SNAPSHOT_MUX_WIZ_KERNEL_POINTER   (0 << 8)
+#define BRW_WIZ_CTL_SNAPSHOT_MUX_SUBSPAN_INSTANCE     (1 << 8)
+#define BRW_WIZ_CTL_SNAPSHOT_MUX_PRIMITIVE_SEQUENCE   (2 << 8)
+#define BRW_WIZ_CTL_SINGLE_SUBSPAN_DISPATCH	      (1 << 6)
+#define BRW_WIZ_CTL_IGNORE_COLOR_SCOREBOARD_STALLS    (1 << 5)
+#define BRW_WIZ_CTL_ENABLE_SUBSPAN_INSTANCE_COMPARE   (1 << 4)
+#define BRW_WIZ_CTL_USE_UPSTREAM_SNAPSHOT_FLAG	      (1 << 3)
+#define BRW_WIZ_CTL_SNAPSHOT_ALL_THREADS	      (1 << 2)
+#define BRW_WIZ_CTL_THREAD_SNAPSHOT_ENABLE	      (1 << 1)
+#define BRW_WIZ_CTL_SNAPSHOT_ENABLE		      (1 << 0)
+
+#define BRW_WIZ_STRG_VAL			      0x7c04
+#define BRW_WIZ_RDATA				      0x7c18
+
+#define BRW_TS_CTL		       0x7e00
+#define BRW_TS_CTL_SNAPSHOT_COMPLETE		   (1 << 31)
+#define BRW_TS_CTL_SNAPSHOT_MESSAGE_ERROR	   (0 << 8)
+#define BRW_TS_CTL_SNAPSHOT_INTERFACE_DESCRIPTOR   (3 << 8)
+#define BRW_TS_CTL_SNAPSHOT_ALL_CHILD_THREADS	   (1 << 2)
+#define BRW_TS_CTL_SNAPSHOT_ALL_ROOT_THREADS  	   (1 << 1)
+#define BRW_TS_CTL_SNAPSHOT_ENABLE		   (1 << 0)
+
+#define BRW_TS_STRG_VAL		       0x7e04
+#define BRW_TS_RDATA		       0x7e08
+
+#define BRW_TD_CTL		       0x8000
+#define BRW_TD_CTL_MUX_SHIFT	       8
+#define BRW_TD_CTL_EXTERNAL_HALT_R0_DEBUG_MATCH	   (1 << 7)
+#define BRW_TD_CTL_FORCE_EXTERNAL_HALT		   (1 << 6)
+#define BRW_TD_CTL_EXCEPTION_MASK_OVERRIDE	   (1 << 5)
+#define BRW_TD_CTL_FORCE_THREAD_BREAKPOINT_ENABLE  (1 << 4)
+#define BRW_TD_CTL_BREAKPOINT_ENABLE		   (1 << 2)
+#define BRW_TD_CTL2		       0x8004
+#define BRW_TD_CTL2_ILLEGAL_OPCODE_EXCEPTION_OVERRIDE (1 << 28)
+#define BRW_TD_CTL2_MASKSTACK_EXCEPTION_OVERRIDE      (1 << 26)
+#define BRW_TD_CTL2_SOFTWARE_EXCEPTION_OVERRIDE	      (1 << 25)
+#define BRW_TD_CTL2_ACTIVE_THREAD_LIMIT_SHIFT	      16
+#define BRW_TD_CTL2_ACTIVE_THREAD_LIMIT_ENABLE	      (1 << 8)
+#define BRW_TD_CTL2_THREAD_SPAWNER_EXECUTION_MASK_ENABLE (1 << 7)
+#define BRW_TD_CTL2_WIZ_EXECUTION_MASK_ENABLE	      (1 << 6)
+#define BRW_TD_CTL2_SF_EXECUTION_MASK_ENABLE	      (1 << 5)
+#define BRW_TD_CTL2_CLIPPER_EXECUTION_MASK_ENABLE     (1 << 4)
+#define BRW_TD_CTL2_GS_EXECUTION_MASK_ENABLE	      (1 << 3)
+#define BRW_TD_CTL2_VS_EXECUTION_MASK_ENABLE	      (1 << 0)
+#define BRW_TD_VF_VS_EMSK	       0x8008
+#define BRW_TD_GS_EMSK		       0x800c
+#define BRW_TD_CLIP_EMSK	       0x8010
+#define BRW_TD_SF_EMSK		       0x8014
+#define BRW_TD_WIZ_EMSK		       0x8018
+#define BRW_TD_0_6_EHTRG_VAL	       0x801c
+#define BRW_TD_0_7_EHTRG_VAL	       0x8020
+#define BRW_TD_0_6_EHTRG_MSK           0x8024
+#define BRW_TD_0_7_EHTRG_MSK	       0x8028
+#define BRW_TD_RDATA		       0x802c
+#define BRW_TD_TS_EMSK		       0x8030
+
+#define BRW_EU_CTL		       0x8800
+#define BRW_EU_CTL_SELECT_SHIFT	       16
+#define BRW_EU_CTL_DATA_MUX_SHIFT      8
+#define BRW_EU_ATT_0		       0x8810
+#define BRW_EU_ATT_1		       0x8814
+#define BRW_EU_ATT_DATA_0	       0x8820
+#define BRW_EU_ATT_DATA_1	       0x8824
+#define BRW_EU_ATT_CLR_0	       0x8830
+#define BRW_EU_ATT_CLR_1	       0x8834
+#define BRW_EU_RDATA		       0x8840
+
+typedef struct i965_device i965_device_t;
+typedef struct i965_surface i965_surface_t;
+typedef struct i965_shader i965_shader_t;
+typedef struct i965_stream i965_stream_t;
+
+struct i965_sf_state {
+    cairo_hash_entry_t entry;
+    uint32_t offset;
+};
+
+cairo_private cairo_bool_t
+i965_sf_state_equal (const void *, const void *);
+
+struct i965_cc_state {
+    cairo_hash_entry_t entry;
+    uint32_t offset;
+};
+
+cairo_private cairo_bool_t
+i965_cc_state_equal (const void *, const void *);
+
+struct i965_wm_kernel {
+    cairo_hash_entry_t entry;
+    uint32_t offset;
+};
+
+struct i965_wm_state {
+    cairo_hash_entry_t entry;
+    uint32_t kernel;
+    uint32_t sampler;
+    uint32_t offset;
+};
+
+cairo_private cairo_bool_t
+i965_wm_state_equal (const void *, const void *);
+
+struct i965_wm_binding {
+    cairo_hash_entry_t entry;
+    uint32_t table[4];
+    int size;
+    uint32_t offset;
+};
+
+cairo_private cairo_bool_t
+i965_wm_binding_equal (const void *, const void *);
+
+struct i965_sampler {
+    cairo_hash_entry_t entry;
+    uint32_t offset;
+};
+
+struct i965_vbo {
+    struct i965_vbo *next;
+    intel_bo_t *bo;
+    unsigned int count;
+};
+
+struct i965_surface {
+    intel_surface_t intel;
+
+    uint32_t stream;
+    uint32_t offset;
+};
+
+struct i965_pending_relocation {
+    uint32_t offset;
+    uint32_t read_domains;
+    uint32_t write_domain;
+    uint32_t delta;
+};
+
+struct i965_stream {
+    uint32_t used;
+    uint32_t committed;
+    uint32_t size;
+    uint8_t *data;
+    uint32_t serial;
+
+    int num_pending_relocations;
+    int max_pending_relocations;
+    struct i965_pending_relocation *pending_relocations;
+
+    int num_relocations;
+    int max_relocations;
+    struct drm_i915_gem_relocation_entry *relocations;
+};
+
+#define I965_BATCH_SIZE (16 * 4096)
+#define I965_GENERAL_SIZE (16 * 4096)
+#define I965_SURFACE_SIZE (32 * 4096)
+#define I965_VERTEX_SIZE (128 * 4096)
+
+#define I965_TILING_DEFAULT I915_TILING_Y
+
+
+struct i965_device {
+    intel_device_t intel;
+
+    cairo_bool_t is_g4x;
+
+    i965_shader_t *shader; /* note: only valid during geometry emission */
+
+    /* track state changes */
+    struct i965_sf_state sf_state;
+    struct i965_cc_state cc_state;
+    struct i965_wm_state wm_state;
+    struct i965_wm_binding wm_binding;
+
+    i965_surface_t *target;
+    uint32_t target_offset;
+
+    intel_bo_t *source;
+    uint32_t source_offset;
+
+    intel_bo_t *mask;
+    uint32_t mask_offset;
+
+    intel_bo_t *clip;
+    uint32_t clip_offset;
+
+    uint32_t draw_rectangle;
+
+    uint32_t vs_offset;
+    uint32_t border_color_offset;
+    cairo_hash_table_t *sf_states;
+    cairo_hash_table_t *cc_states;
+    cairo_hash_table_t *wm_kernels;
+    cairo_hash_table_t *wm_states;
+    cairo_hash_table_t *wm_bindings;
+    cairo_hash_table_t *samplers;
+    intel_bo_t *general_state;
+
+    cairo_freelist_t sf_freelist;
+    cairo_freelist_t cc_freelist;
+    cairo_freelist_t wm_kernel_freelist;
+    cairo_freelist_t wm_state_freelist;
+    cairo_freelist_t wm_binding_freelist;
+    cairo_freelist_t sampler_freelist;
+
+    uint32_t vertex_type;
+    uint32_t vertex_size;
+    uint32_t rectangle_size;
+    uint32_t last_vertex_size;
+
+    float *constants; /* 4 x matrix + 2 x source */
+    unsigned constants_size;
+    cairo_bool_t have_urb_fences;
+
+    i965_stream_t batch;
+    uint8_t batch_base[I965_BATCH_SIZE];
+    struct drm_i915_gem_relocation_entry batch_relocations[2048];
+
+    i965_stream_t surface;
+    uint8_t surface_base[I965_SURFACE_SIZE];
+    struct i965_pending_relocation surface_pending_relocations[1];
+    struct drm_i915_gem_relocation_entry surface_relocations[1024];
+
+    i965_stream_t general;
+    uint8_t general_base[I965_GENERAL_SIZE];
+    struct i965_pending_relocation general_pending_relocations[1];
+
+    i965_stream_t vertex;
+    uint8_t vertex_base[I965_VERTEX_SIZE];
+    struct i965_pending_relocation vertex_pending_relocations[512];
+
+    struct {
+	size_t gtt_size;
+
+	intel_bo_t *bo[1024];
+	int count;
+
+	struct drm_i915_gem_exec_object2 exec[1024];
+    } exec;
+    cairo_list_t flush;
+};
+
+typedef enum {
+    VS_NONE = 0,
+    VS_GLYPHS,
+    VS_SPANS,
+} i965_vertex_shader_t;
+
+typedef enum {
+    FS_NONE = 0,
+    FS_CONSTANT,
+    FS_LINEAR,
+    FS_RADIAL,
+    FS_SURFACE,
+    FS_GLYPHS,
+    FS_SPANS,
+} i965_fragment_shader_t;
+
+typedef enum {
+    PATTERN_BASE,
+    PATTERN_SOLID,
+    PATTERN_LINEAR,
+    PATTERN_RADIAL,
+    PATTERN_SURFACE,
+} i965_shader_channel_t;
+#define PATTERN_NONE (i965_shader_channel_t)-1
+
+struct i965_shader {
+    i965_device_t *device;
+    i965_surface_t *target;
+
+    cairo_operator_t op;
+
+    cairo_bool_t committed;
+    cairo_bool_t need_combine;
+
+    float constants[4*8 + 2*8]; /* 4 x matrix + 2 x source */
+    unsigned constants_size;
+
+    union i965_shader_channel {
+	struct {
+	    i965_vertex_shader_t vertex;
+	    i965_fragment_shader_t fragment;
+	    i965_shader_channel_t pattern;
+	} type;
+	struct i965_shader_base {
+	    i965_vertex_shader_t vertex;
+	    i965_fragment_shader_t fragment;
+	    i965_shader_channel_t pattern;
+
+	    uint32_t mode;
+
+	    float constants[8];
+	    unsigned constants_size;
+
+	    intel_bo_t *bo;
+	    cairo_format_t format;
+	    cairo_content_t content;
+	    int width, height, stride;
+	    int filter, extend;
+	    cairo_matrix_t matrix;
+	    cairo_bool_t has_component_alpha;
+	} base;
+	struct i965_shader_solid {
+	    struct i965_shader_base base;
+	} solid;
+	struct i965_shader_linear {
+	    struct i965_shader_base base;
+	} linear;
+	struct i965_shader_radial {
+	    struct i965_shader_base base;
+	} radial;
+	struct i965_shader_surface {
+	    struct i965_shader_base base;
+	    cairo_surface_t *surface;
+	} surface;
+    } source, mask, clip, dst;
+
+    jmp_buf unwind;
+};
+
+enum i965_shader_linear_mode {
+    /* XXX REFLECT */
+    LINEAR_TEXTURE,
+    LINEAR_NONE,
+    LINEAR_REPEAT,
+    LINEAR_PAD,
+};
+
+enum i965_shader_radial_mode {
+    RADIAL_ONE,
+    RADIAL_TWO
+};
+
+typedef cairo_status_t
+(*i965_spans_func_t) (void			*closure,
+		      cairo_span_renderer_t	*renderer,
+		      const cairo_rectangle_int_t	*extents);
+
+static inline i965_device_t *
+i965_device (i965_surface_t *surface)
+{
+    return (i965_device_t *) surface->intel.drm.base.device;
+}
+
+cairo_private void
+i965_emit_relocation (i965_device_t *device,
+		      i965_stream_t *stream,
+		      intel_bo_t *target,
+		      uint32_t target_offset,
+		      uint32_t read_domains,
+		      uint32_t write_domain,
+		      uint32_t offset);
+
+static cairo_always_inline uint32_t
+i965_stream_emit (i965_stream_t *stream, const void *data, size_t size)
+{
+    uint32_t offset;
+
+    offset = stream->used;
+    assert (offset + size <= stream->size);
+    memcpy (stream->data + offset, data, size);
+    stream->used += size;
+
+    return offset;
+}
+
+static cairo_always_inline void
+i965_stream_align (i965_stream_t *stream, uint32_t size)
+{
+    stream->used = (stream->used + size - 1) & -size;
+}
+
+static cairo_always_inline void *
+i965_stream_alloc (i965_stream_t *stream, uint32_t align, uint32_t size)
+{
+    void *ptr;
+
+    if (align)
+	i965_stream_align (stream, align);
+
+    assert (stream->used + size <= stream->size);
+    ptr = stream->data + stream->used;
+    stream->used += size;
+
+    return ptr;
+}
+
+static cairo_always_inline uint32_t
+i965_stream_offsetof (i965_stream_t *stream, const void *ptr)
+{
+    return (char *) ptr - (char *) stream->data;
+}
+
+cairo_private void
+i965_stream_commit (i965_device_t *device,
+		    i965_stream_t *stream);
+
+cairo_private void
+i965_general_state_reset (i965_device_t *device);
+
+static inline void
+i965_batch_emit_dword (i965_device_t *device, uint32_t dword)
+{
+    *(uint32_t *) (device->batch.data + device->batch.used) = dword;
+    device->batch.used += 4;
+}
+
+#define OUT_BATCH(dword) i965_batch_emit_dword(device, dword)
+
+cairo_private void
+i965_clipped_vertices (i965_device_t *device,
+		       struct i965_vbo *vbo,
+		       cairo_region_t *clip_region);
+
+cairo_private void
+i965_flush_vertices (i965_device_t *device);
+
+cairo_private void
+i965_finish_vertices (i965_device_t *device);
+
+static inline float *
+i965_add_rectangle (i965_device_t *device)
+{
+    float *vertices;
+    uint32_t size;
+
+    size = device->rectangle_size;
+    if (unlikely (device->vertex.used + size > device->vertex.size))
+	i965_finish_vertices (device);
+
+    vertices = (float *) (device->vertex.data + device->vertex.used);
+    device->vertex.used += size;
+
+    return vertices;
+}
+
+static inline void
+i965_shader_add_rectangle (const i965_shader_t *shader,
+			   int x, int y,
+			   int w, int h)
+{
+    float *v;
+
+    v= i965_add_rectangle (shader->device);
+
+    /* bottom-right */
+    *v++ = x + w;
+    *v++ = y + h;
+
+    /* bottom-left */
+    *v++ = x;
+    *v++ = y + h;
+
+    /* top-left */
+    *v++ = x;
+    *v++ = y;
+}
+
+cairo_private cairo_surface_t *
+i965_surface_create_internal (cairo_drm_device_t *base_dev,
+			      cairo_format_t format,
+			      int width, int height,
+			      uint32_t tiling,
+			      cairo_bool_t gpu_target);
+
+cairo_private cairo_status_t
+i965_clip_and_composite_spans (i965_surface_t		*dst,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*pattern,
+			       cairo_antialias_t	 antialias,
+			       i965_spans_func_t	 draw_func,
+			       void			*draw_closure,
+			       const cairo_composite_rectangles_t*extents,
+			       cairo_clip_t		*clip);
+
+cairo_private cairo_int_status_t
+i965_surface_glyphs (void			*abstract_surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_glyph_t		*glyphs,
+		     int			 num_glyphs,
+		     cairo_scaled_font_t	*scaled_font,
+		     cairo_clip_t		*clip,
+		     int *num_remaining);
+
+cairo_private void
+i965_shader_init (i965_shader_t *shader,
+		  i965_surface_t *dst,
+		  cairo_operator_t op);
+
+cairo_private cairo_status_t
+i965_shader_acquire_pattern (i965_shader_t *shader,
+			     union i965_shader_channel *src,
+			     const cairo_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents);
+
+cairo_private void
+i965_shader_set_clip (i965_shader_t *shader,
+		      cairo_clip_t *clip);
+
+cairo_private cairo_status_t
+i965_shader_commit (i965_shader_t *shader,
+		    i965_device_t *device);
+
+cairo_private void
+i965_shader_fini (i965_shader_t *shader);
+
+cairo_private cairo_status_t
+i965_device_flush (i965_device_t *device);
+
+cairo_private cairo_status_t
+i965_fixup_unbounded (i965_surface_t *dst,
+		      const cairo_composite_rectangles_t *extents,
+		      cairo_clip_t *clip);
+
+static inline int
+i965_filter (cairo_filter_t filter)
+{
+    switch (filter) {
+    default:
+    case CAIRO_FILTER_FAST:
+    case CAIRO_FILTER_NEAREST:
+	return BRW_MAPFILTER_NEAREST;
+
+    case CAIRO_FILTER_GOOD:
+    case CAIRO_FILTER_BEST:
+    case CAIRO_FILTER_BILINEAR:
+    case CAIRO_FILTER_GAUSSIAN:
+	return BRW_MAPFILTER_LINEAR;
+    }
+}
+
+static inline int
+i965_extend (cairo_extend_t extend)
+{
+    switch (extend) {
+    default:
+    case CAIRO_EXTEND_NONE:
+	return BRW_TEXCOORDMODE_CLAMP_BORDER;
+    case CAIRO_EXTEND_REPEAT:
+	return BRW_TEXCOORDMODE_WRAP;
+    case CAIRO_EXTEND_PAD:
+	return BRW_TEXCOORDMODE_CLAMP;
+    case CAIRO_EXTEND_REFLECT:
+	return BRW_TEXCOORDMODE_MIRROR;
+    }
+}
+
+#endif /* CAIRO_DRM_I965_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i965-shader.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-shader.c
new file mode 100644
index 0000000..eed5f5f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-shader.c
@@ -0,0 +1,2825 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Kristian Høgsberg
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *      Kristian Høgsberg <krh@bitplanet.net>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-drm-i965-private.h"
+#include "cairo-surface-subsurface-private.h"
+#include "cairo-surface-snapshot-private.h"
+
+#include "cairo-drm-intel-brw-eu.h"
+
+/* Theory of shaders:
+ *
+ * 3 types of rectangular inputs:
+ *  (a) standard composite: x,y, use source, mask matrices to compute texcoords
+ *  (b) spans: x,y, alpha, use source matrix
+ *  (c) glyphs: x,y, s,t, use source matrix
+ *
+ * 5 types of pixel shaders:
+ *  (a) Solid colour
+ *  (b) Linear gradient (via 1D texture, with precomputed tex)
+ *  (c) Radial gradient (per-pixel s computation, 1D texture)
+ *  (d) Spans (mask only): apply opacity
+ *  (e) Texture (includes glyphs).
+ *
+ *  Clip masks are limited to 2D textures only.
+ */
+
+/* XXX dual source blending for LERP + ComponentAlpha!!! */
+
+#define BRW_GRF_BLOCKS(nreg)    ((nreg + 15) / 16 - 1)
+
+#define SF_KERNEL_NUM_GRF  1
+#define SF_MAX_THREADS	   24
+
+#define PS_MAX_THREADS_CTG 50
+#define PS_MAX_THREADS_BRW 32
+
+#define URB_CS_ENTRY_SIZE     3 /* We need 4 matrices + 2 sources */
+#define URB_CS_ENTRIES	      4 /* 4x sets of CONSTANT_BUFFER */
+
+#define URB_VS_ENTRY_SIZE     1
+#define URB_VS_ENTRIES	      8
+
+#define URB_GS_ENTRY_SIZE     0
+#define URB_GS_ENTRIES	      0
+
+#define URB_CLIP_ENTRY_SIZE   0
+#define URB_CLIP_ENTRIES      0
+
+#define URB_SF_ENTRY_SIZE     1
+#define URB_SF_ENTRIES	      (SF_MAX_THREADS + 1)
+
+static void
+i965_pipelined_flush (i965_device_t *device)
+{
+    intel_bo_t *bo, *next;
+
+    if (device->batch.used == 0)
+	return;
+
+    OUT_BATCH (BRW_PIPE_CONTROL |
+	       BRW_PIPE_CONTROL_NOWRITE |
+	       BRW_PIPE_CONTROL_WC_FLUSH |
+	       2);
+    OUT_BATCH(0);   /* Destination address */ 
+    OUT_BATCH(0);   /* Immediate data low DW */ 
+    OUT_BATCH(0);   /* Immediate data high DW */ 
+
+    cairo_list_foreach_entry_safe (bo, next, intel_bo_t, &device->flush, link) {
+	bo->batch_write_domain = 0;
+	cairo_list_init (&bo->link);
+    }
+    cairo_list_init (&device->flush);
+}
+
+static cairo_status_t
+i965_shader_acquire_solid (i965_shader_t *shader,
+			   union i965_shader_channel *src,
+			   const cairo_solid_pattern_t *solid,
+			   const cairo_rectangle_int_t *extents)
+{
+    src->type.fragment = FS_CONSTANT;
+    src->type.vertex = VS_NONE;
+    src->type.pattern = PATTERN_SOLID;
+
+    src->base.content = _cairo_color_get_content (&solid->color);
+    src->base.constants[0] = solid->color.red   * solid->color.alpha;
+    src->base.constants[1] = solid->color.green * solid->color.alpha;
+    src->base.constants[2] = solid->color.blue  * solid->color.alpha;
+    src->base.constants[3] = solid->color.alpha;
+    src->base.constants_size = 4;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_shader_acquire_linear (i965_shader_t *shader,
+			    union i965_shader_channel *src,
+			    const cairo_linear_pattern_t *linear,
+			    const cairo_rectangle_int_t *extents)
+{
+    intel_buffer_t buffer;
+    cairo_status_t status;
+    double x0, y0, sf;
+    double dx, dy, offset;
+
+    status = intel_gradient_render (&i965_device (shader->target)->intel,
+				    &linear->base, &buffer);
+    if (unlikely (status))
+	return status;
+
+    src->type.vertex = VS_NONE;
+    src->type.pattern = PATTERN_LINEAR;
+    src->type.fragment = FS_LINEAR;
+    src->base.bo = buffer.bo;
+    src->base.content = CAIRO_CONTENT_COLOR_ALPHA;
+    src->base.format = buffer.format;
+    src->base.width  = buffer.width;
+    src->base.height = buffer.height;
+    src->base.stride = buffer.stride;
+    src->base.filter = i965_filter (CAIRO_FILTER_BILINEAR);
+    src->base.extend = i965_extend (linear->base.base.extend);
+
+    dx = linear->pd2.x - linear->pd1.x;
+    dy = linear->pd2.y - linear->pd1.y;
+    sf = 1. / (dx * dx + dy * dy);
+    dx *= sf;
+    dy *= sf;
+
+    x0 = linear->pd1.x;
+    y0 = linear->pd1.y;
+    offset = dx*x0 + dy*y0;
+
+    if (_cairo_matrix_is_identity (&linear->base.base.matrix)) {
+	src->base.matrix.xx = dx;
+	src->base.matrix.xy = dy;
+	src->base.matrix.x0 = -offset;
+    } else {
+	cairo_matrix_t m;
+
+	cairo_matrix_init (&m, dx, 0, dy, 0, -offset, 0);
+	cairo_matrix_multiply (&src->base.matrix, &linear->base.base.matrix, &m);
+    }
+    src->base.matrix.yx = 0.;
+    src->base.matrix.yy = 1.;
+    src->base.matrix.y0 = 0.;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_shader_acquire_radial (i965_shader_t *shader,
+			    union i965_shader_channel *src,
+			    const cairo_radial_pattern_t *radial,
+			    const cairo_rectangle_int_t *extents)
+{
+    intel_buffer_t buffer;
+    cairo_status_t status;
+    double dx, dy, dr, r1;
+
+    status = intel_gradient_render (&i965_device (shader->target)->intel,
+				    &radial->base, &buffer);
+    if (unlikely (status))
+	return status;
+
+    src->type.vertex = VS_NONE;
+    src->type.pattern = PATTERN_RADIAL;
+    src->type.fragment = FS_RADIAL;
+    src->base.bo = buffer.bo;
+    src->base.content = CAIRO_CONTENT_COLOR_ALPHA;
+    src->base.format = buffer.format;
+    src->base.width  = buffer.width;
+    src->base.height = buffer.height;
+    src->base.stride = buffer.stride;
+    src->base.filter = i965_filter (CAIRO_FILTER_BILINEAR);
+    src->base.extend = i965_extend (radial->base.base.extend);
+
+    dx = radial->cd2.center.x - radial->cd1.center.x;
+    dy = radial->cd2.center.y - radial->cd1.center.y;
+    dr = radial->cd2.radius   - radial->cd1.radius;
+
+    r1 = radial->cd1.radius;
+
+    if (FALSE && (radial->cd2.center.x == radial->cd1.center.x &&
+		  radial->cd2.center.y == radial->cd1.center.y))
+    {
+	/* XXX dr == 0, meaningless with anything other than PAD */
+	src->base.constants[0] = radial->cd1.center.x / dr;
+	src->base.constants[1] = radial->cd1.center.y / dr;
+	src->base.constants[2] = 1. / dr;
+	src->base.constants[3] = -r1 / dr;
+
+	src->base.constants_size = 4;
+	src->base.mode = RADIAL_ONE;
+    } else {
+	src->base.constants[0] = -radial->cd1.center.x;
+	src->base.constants[1] = -radial->cd1.center.y;
+	src->base.constants[2] = r1;
+	src->base.constants[3] = -4 * (dx*dx + dy*dy - dr*dr);
+
+	src->base.constants[4] = -2 * dx;
+	src->base.constants[5] = -2 * dy;
+	src->base.constants[6] = -2 * r1 * dr;
+	src->base.constants[7] = 1 / (2 * (dx*dx + dy*dy - dr*dr));
+
+	src->base.constants_size = 8;
+	src->base.mode = RADIAL_TWO;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_surface_clone (i965_device_t *device,
+		    cairo_image_surface_t *image,
+		    i965_surface_t **clone_out)
+{
+    i965_surface_t *clone;
+    cairo_status_t status;
+
+    clone = (i965_surface_t *)
+	i965_surface_create_internal (&device->intel.base,
+				      image->base.content,
+				      image->width,
+				      image->height,
+				      I965_TILING_DEFAULT,
+				      FALSE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    status = intel_bo_put_image (&device->intel,
+				 to_intel_bo (clone->intel.drm.bo),
+				 image,
+				 0, 0,
+				 image->width, image->height,
+				 0, 0);
+
+    if (unlikely (status)) {
+	cairo_surface_destroy (&clone->intel.drm.base);
+	return status;
+    }
+
+    status = intel_snapshot_cache_insert (&device->intel, &clone->intel);
+    if (unlikely (status)) {
+	cairo_surface_destroy (&clone->intel.drm.base);
+	return status;
+    }
+
+    _cairo_surface_attach_snapshot (&image->base,
+				    &clone->intel.drm.base,
+				    intel_surface_detach_snapshot);
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_surface_clone_subimage (i965_device_t *device,
+			     cairo_image_surface_t *image,
+			     const cairo_rectangle_int_t *extents,
+			     i965_surface_t **clone_out)
+{
+    i965_surface_t *clone;
+    cairo_status_t status;
+
+    clone = (i965_surface_t *)
+	i965_surface_create_internal (&device->intel.base,
+				      image->base.content,
+				      extents->width,
+				      extents->height,
+				      I965_TILING_DEFAULT,
+				      FALSE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    status = intel_bo_put_image (to_intel_device (clone->intel.drm.base.device),
+				 to_intel_bo (clone->intel.drm.bo),
+				 image,
+				 extents->x, extents->y,
+				 extents->width, extents->height,
+				 0, 0);
+    if (unlikely (status))
+	return status;
+
+    *clone_out = clone;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_shader_acquire_solid_surface (i965_shader_t *shader,
+				   union i965_shader_channel *src,
+				   cairo_surface_t *surface,
+				   const cairo_rectangle_int_t *extents)
+{
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_status_t status;
+    uint32_t argb;
+
+    status = _cairo_surface_acquire_source_image (surface, &image, &image_extra);
+    if (unlikely (status))
+	return status;
+
+    if (image->format != CAIRO_FORMAT_ARGB32) {
+	cairo_surface_t *pixel;
+	cairo_surface_pattern_t pattern;
+
+	/* extract the pixel as argb32 */
+	pixel = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
+	_cairo_pattern_init_for_surface (&pattern, &image->base);
+	cairo_matrix_init_translate (&pattern.base.matrix, extents->x, extents->y);
+	pattern.base.filter = CAIRO_FILTER_NEAREST;
+	status = _cairo_surface_paint (pixel, CAIRO_OPERATOR_SOURCE, &pattern.base, NULL);
+	_cairo_pattern_fini (&pattern.base);
+
+	if (unlikely (status)) {
+	    _cairo_surface_release_source_image (surface, image, image_extra);
+	    cairo_surface_destroy (pixel);
+	    return status;
+	}
+
+	argb = *(uint32_t *) ((cairo_image_surface_t *) pixel)->data;
+	cairo_surface_destroy (pixel);
+    } else {
+	argb = ((uint32_t *) (image->data + extents->y * image->stride))[extents->x];
+    }
+
+    _cairo_surface_release_source_image (surface, image, image_extra);
+
+    if (argb >> 24 == 0)
+	argb = 0;
+
+    src->base.constants[0] = ((argb >> 16) & 0xff) / 255.;
+    src->base.constants[1] = ((argb >>  8) & 0xff) / 255.;
+    src->base.constants[2] = ((argb >>  0) & 0xff) / 255.;
+    src->base.constants[3] = ((argb >> 24) & 0xff) / 255.;
+    src->base.constants_size = 4;
+
+    src->base.content  = CAIRO_CONTENT_COLOR_ALPHA;
+    if (CAIRO_ALPHA_IS_OPAQUE(src->base.constants[3]))
+	src->base.content &= ~CAIRO_CONTENT_ALPHA;
+    src->type.fragment = FS_CONSTANT;
+    src->type.vertex   = VS_NONE;
+    src->type.pattern  = PATTERN_SOLID;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_shader_acquire_surface (i965_shader_t *shader,
+			     union i965_shader_channel *src,
+			     const cairo_surface_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents)
+{
+    cairo_surface_t *surface, *drm;
+    cairo_matrix_t m;
+    cairo_status_t status;
+    int src_x = 0, src_y = 0;
+
+    assert (src->type.fragment == FS_NONE);
+    drm = surface = pattern->surface;
+
+    if (surface->type == CAIRO_SURFACE_TYPE_DRM) {
+	if (surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    drm = ((cairo_surface_subsurface_t *) surface)->target;
+	} else if (surface->backend->type == CAIRO_INTERNAL_SURFACE_TYPE_SNAPSHOT) {
+	    drm = ((cairo_surface_snapshot_t *) surface)->target;
+	}
+    }
+
+    src->type.pattern = PATTERN_SURFACE;
+    src->surface.surface = NULL;
+    if (drm->type == CAIRO_SURFACE_TYPE_DRM) {
+	i965_surface_t *s = (i965_surface_t *) drm;
+
+	if (surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	    if (s->intel.drm.base.device == shader->target->intel.drm.base.device) {
+		cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) surface;
+		if (s != shader->target) {
+		    int x;
+
+		    if (s->intel.drm.fallback != NULL) {
+			status = intel_surface_flush (s, 0);
+			if (unlikely (status))
+			    return status;
+		    }
+
+		    if (to_intel_bo (s->intel.drm.bo)->batch_write_domain)
+			i965_pipelined_flush (i965_device (s));
+
+		    src->type.fragment = FS_SURFACE;
+
+		    src->base.bo = to_intel_bo (s->intel.drm.bo);
+		    src->base.format = s->intel.drm.format;
+		    src->base.content = s->intel.drm.base.content;
+		    src->base.width = sub->extents.width;
+		    src->base.height = sub->extents.height;
+		    src->base.stride = s->intel.drm.stride;
+
+		    x = sub->extents.x;
+		    if (s->intel.drm.format != CAIRO_FORMAT_A8)
+			x *= 4;
+
+		    /* XXX tiling restrictions upon offset? */
+		    //src->base.offset[0] = s->offset + sub->extents.y * s->intel.drm.stride + x;
+		} else {
+		    i965_surface_t *clone;
+		    cairo_surface_pattern_t pattern;
+
+		    clone = (i965_surface_t *)
+			i965_surface_create_internal ((cairo_drm_device_t *) s->intel.drm.base.device,
+						      s->intel.drm.base.content,
+						      sub->extents.width,
+						      sub->extents.height,
+						      I965_TILING_DEFAULT,
+						      TRUE);
+		    if (unlikely (clone->intel.drm.base.status))
+			return clone->intel.drm.base.status;
+
+		    _cairo_pattern_init_for_surface (&pattern, &s->intel.drm.base);
+		    pattern.base.filter = CAIRO_FILTER_NEAREST;
+		    cairo_matrix_init_translate (&pattern.base.matrix,
+						 sub->extents.x, sub->extents.y);
+
+		    status = _cairo_surface_paint (&clone->intel.drm.base,
+						   CAIRO_OPERATOR_SOURCE,
+						   &pattern.base,
+						   NULL);
+
+		    _cairo_pattern_fini (&pattern.base);
+
+		    if (unlikely (status)) {
+			cairo_surface_destroy (&clone->intel.drm.base);
+			return status;
+		    }
+
+		    i965_pipelined_flush (i965_device (s));
+		    src->type.fragment = FS_SURFACE;
+
+		    src->base.bo = to_intel_bo (clone->intel.drm.bo);
+		    src->base.format = clone->intel.drm.format;
+		    src->base.content = clone->intel.drm.base.content;
+		    src->base.width = clone->intel.drm.width;
+		    src->base.height = clone->intel.drm.height;
+		    src->base.stride = clone->intel.drm.stride;
+
+		    src->surface.surface = &clone->intel.drm.base;
+		}
+
+		src_x = sub->extents.x;
+		src_y = sub->extents.y;
+	    }
+	} else {
+	    if (s->intel.drm.base.device == shader->target->intel.drm.base.device) {
+		if (s != shader->target) {
+		    if (s->intel.drm.fallback != NULL) {
+			status = intel_surface_flush (s, 0);
+			if (unlikely (status))
+			    return status;
+		    }
+
+		    if (to_intel_bo (s->intel.drm.bo)->batch_write_domain)
+			i965_pipelined_flush (i965_device (s));
+
+		    src->type.fragment = FS_SURFACE;
+
+		    src->base.bo = to_intel_bo (s->intel.drm.bo);
+		    src->base.format = s->intel.drm.format;
+		    src->base.content = s->intel.drm.base.content;
+		    src->base.width = s->intel.drm.width;
+		    src->base.height = s->intel.drm.height;
+		    src->base.stride = s->intel.drm.stride;
+		} else {
+		    i965_surface_t *clone;
+		    cairo_surface_pattern_t pattern;
+
+		    clone = (i965_surface_t *)
+			i965_surface_create_internal ((cairo_drm_device_t *) s->intel.drm.base.device,
+						      s->intel.drm.base.content,
+						      s->intel.drm.width,
+						      s->intel.drm.height,
+						      I965_TILING_DEFAULT,
+						      TRUE);
+		    if (unlikely (clone->intel.drm.base.status))
+			return clone->intel.drm.base.status;
+
+		    _cairo_pattern_init_for_surface (&pattern, &s->intel.drm.base);
+		    pattern.base.filter = CAIRO_FILTER_NEAREST;
+		    status = _cairo_surface_paint (&clone->intel.drm.base,
+						   CAIRO_OPERATOR_SOURCE,
+						   &pattern.base,
+						   NULL);
+
+		    _cairo_pattern_fini (&pattern.base);
+
+		    if (unlikely (status)) {
+			cairo_surface_destroy (&clone->intel.drm.base);
+			return status;
+		    }
+
+		    i965_pipelined_flush (i965_device (s));
+		    src->type.fragment = FS_SURFACE;
+
+		    src->base.bo = to_intel_bo (clone->intel.drm.bo);
+		    src->base.format = clone->intel.drm.format;
+		    src->base.content = clone->intel.drm.base.content;
+		    src->base.width = clone->intel.drm.width;
+		    src->base.height = clone->intel.drm.height;
+		    src->base.stride = clone->intel.drm.stride;
+
+		    src->surface.surface = &clone->intel.drm.base;
+		}
+	    }
+	}
+    }
+
+    if (src->type.fragment == FS_NONE) {
+	i965_surface_t *s;
+
+	if (extents->width == 1 && extents->height == 1) {
+	    return i965_shader_acquire_solid_surface (shader, src,
+						      surface, extents);
+	}
+
+	s = (i965_surface_t *)
+	    _cairo_surface_has_snapshot (surface,
+					 shader->target->intel.drm.base.backend);
+	if (s != NULL) {
+	    i965_device_t *device = i965_device (shader->target);
+	    intel_bo_t *bo = to_intel_bo (s->intel.drm.bo);
+
+	    if (bo->purgeable &&
+		! intel_bo_madvise (&device->intel, bo, I915_MADV_WILLNEED))
+	    {
+		_cairo_surface_detach_snapshot (&s->intel.drm.base);
+		s = NULL;
+	    }
+
+	    if (s != NULL)
+		cairo_surface_reference (&s->intel.drm.base);
+	}
+
+	if (s == NULL) {
+	    cairo_image_surface_t *image;
+	    void *image_extra;
+	    cairo_status_t status;
+
+	    status = _cairo_surface_acquire_source_image (surface, &image, &image_extra);
+	    if (unlikely (status))
+		return status;
+
+	    if (image->width < 8192 && image->height < 8192) {
+		status = i965_surface_clone (i965_device (shader->target), image, &s);
+	    } else {
+		status = i965_surface_clone_subimage (i965_device (shader->target),
+						      image, extents, &s);
+		src_x = -extents->x;
+		src_y = -extents->y;
+	    }
+
+	    _cairo_surface_release_source_image (surface, image, image_extra);
+
+	    if (unlikely (status))
+		return status;
+
+	    /* XXX? */
+	    //intel_bo_mark_purgeable (to_intel_bo (s->intel.drm.bo), TRUE);
+	}
+
+	src->type.fragment = FS_SURFACE;
+
+	src->base.bo = to_intel_bo (s->intel.drm.bo);
+	src->base.content = s->intel.drm.base.content;
+	src->base.format = s->intel.drm.format;
+	src->base.width  = s->intel.drm.width;
+	src->base.height = s->intel.drm.height;
+	src->base.stride = s->intel.drm.stride;
+
+	src->surface.surface = &s->intel.drm.base;
+
+	drm = &s->intel.drm.base;
+    }
+
+    /* XXX transform nx1 or 1xn surfaces to 1D? */
+
+    src->type.vertex = VS_NONE;
+
+    src->base.extend = i965_extend (pattern->base.extend);
+    if (pattern->base.extend == CAIRO_EXTEND_NONE &&
+	extents->x >= 0 && extents->y >= 0 &&
+	extents->x + extents->width  <= src->base.width &&
+	extents->y + extents->height <= src->base.height)
+    {
+	/* Convert a wholly contained NONE to a REFLECT as the contiguous sampler
+	 * cannot not handle CLAMP_BORDER textures.
+	 */
+	src->base.extend = i965_extend (CAIRO_EXTEND_REFLECT);
+	/* XXX also need to check |u,v| < 3 */
+    }
+
+    src->base.filter = i965_filter (pattern->base.filter);
+    if (_cairo_matrix_is_pixel_exact (&pattern->base.matrix))
+	src->base.filter = i965_filter (CAIRO_FILTER_NEAREST);
+
+    /* tweak the src matrix to map from dst to texture coordinates */
+    src->base.matrix = pattern->base.matrix;
+    if (src_x | src_y)
+	cairo_matrix_translate (&src->base.matrix, src_x, src_x);
+    cairo_matrix_init_scale (&m, 1. / src->base.width, 1. / src->base.height);
+    cairo_matrix_multiply (&src->base.matrix, &src->base.matrix, &m);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+i965_shader_acquire_pattern (i965_shader_t *shader,
+			     union i965_shader_channel *src,
+			     const cairo_pattern_t *pattern,
+			     const cairo_rectangle_int_t *extents)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return i965_shader_acquire_solid (shader, src,
+					  (cairo_solid_pattern_t *) pattern,
+					  extents);
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return i965_shader_acquire_linear (shader, src,
+					   (cairo_linear_pattern_t *) pattern,
+					   extents);
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return i965_shader_acquire_radial (shader, src,
+					   (cairo_radial_pattern_t *) pattern,
+					   extents);
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return i965_shader_acquire_surface (shader, src,
+					    (cairo_surface_pattern_t *) pattern,
+					    extents);
+
+    default:
+	ASSERT_NOT_REACHED;
+	return CAIRO_STATUS_SUCCESS;
+    }
+}
+
+static void
+i965_shader_channel_init (union i965_shader_channel *channel)
+{
+    channel->type.vertex = VS_NONE;
+    channel->type.fragment = FS_NONE;
+    channel->type.pattern = PATTERN_NONE;
+
+    channel->base.mode = 0;
+    channel->base.bo = NULL;
+    channel->base.filter = i965_extend (CAIRO_FILTER_NEAREST);
+    channel->base.extend = i965_extend (CAIRO_EXTEND_NONE);
+    channel->base.has_component_alpha = 0;
+    channel->base.constants_size = 0;
+}
+
+void
+i965_shader_init (i965_shader_t *shader,
+		  i965_surface_t *dst,
+		  cairo_operator_t op)
+{
+    shader->committed = FALSE;
+    shader->device = i965_device (dst);
+    shader->target = dst;
+    shader->op = op;
+    shader->constants_size = 0;
+
+    shader->need_combine = FALSE;
+
+    i965_shader_channel_init (&shader->source);
+    i965_shader_channel_init (&shader->mask);
+    i965_shader_channel_init (&shader->clip);
+    i965_shader_channel_init (&shader->dst);
+}
+
+void
+i965_shader_fini (i965_shader_t *shader)
+{
+    if (shader->source.type.pattern == PATTERN_SURFACE)
+	cairo_surface_destroy (shader->source.surface.surface);
+    if (shader->mask.type.pattern == PATTERN_SURFACE)
+	cairo_surface_destroy (shader->mask.surface.surface);
+    if (shader->clip.type.pattern == PATTERN_SURFACE)
+	cairo_surface_destroy (shader->clip.surface.surface);
+    if (shader->dst.type.pattern == PATTERN_SURFACE)
+	cairo_surface_destroy (shader->dst.surface.surface);
+}
+
+void
+i965_shader_set_clip (i965_shader_t *shader,
+		      cairo_clip_t *clip)
+{
+    cairo_surface_t *clip_surface;
+    int clip_x, clip_y;
+    union i965_shader_channel *channel;
+    i965_surface_t *s;
+
+    clip_surface = _cairo_clip_get_surface (clip, &shader->target->intel.drm.base, &clip_x, &clip_y);
+    assert (clip_surface->status == CAIRO_STATUS_SUCCESS);
+    assert (clip_surface->type == CAIRO_SURFACE_TYPE_DRM);
+    s = (i965_surface_t *) clip_surface;
+
+    if (to_intel_bo (s->intel.drm.bo)->batch_write_domain)
+	i965_pipelined_flush (i965_device (s));
+
+    channel = &shader->clip;
+    channel->type.pattern = PATTERN_BASE;
+    channel->type.vertex  = VS_NONE;
+    channel->type.fragment = FS_SURFACE;
+
+    channel->base.bo = to_intel_bo (s->intel.drm.bo);
+    channel->base.content = CAIRO_CONTENT_ALPHA;
+    channel->base.format = CAIRO_FORMAT_A8;
+    channel->base.width  = s->intel.drm.width;
+    channel->base.height = s->intel.drm.height;
+    channel->base.stride = s->intel.drm.stride;
+
+    channel->base.extend = i965_extend (CAIRO_EXTEND_NONE);
+    channel->base.filter = i965_filter (CAIRO_FILTER_NEAREST);
+
+    cairo_matrix_init_scale (&shader->clip.base.matrix,
+			     1. / s->intel.drm.width,
+			     1. / s->intel.drm.height);
+
+    cairo_matrix_translate (&shader->clip.base.matrix,
+			    -clip_x, -clip_y);
+}
+
+static cairo_bool_t
+i965_shader_check_aperture (i965_shader_t *shader,
+			    i965_device_t *device)
+{
+    uint32_t size = device->exec.gtt_size;
+
+    if (shader->target != device->target) {
+	const intel_bo_t *bo = to_intel_bo (shader->target->intel.drm.bo);
+	if (bo->exec == NULL)
+	    size += bo->base.size;
+    }
+
+    if (shader->source.base.bo != NULL && shader->source.base.bo != device->source) {
+	const intel_bo_t *bo = to_intel_bo (shader->target->intel.drm.bo);
+	if (bo->exec == NULL)
+	    size += bo->base.size;
+    }
+
+    if (shader->mask.base.bo != NULL && shader->mask.base.bo != device->mask) {
+	const intel_bo_t *bo = to_intel_bo (shader->target->intel.drm.bo);
+	if (bo->exec == NULL)
+	    size += bo->base.size;
+    }
+
+    if (shader->clip.base.bo != NULL && shader->clip.base.bo != device->clip) {
+	const intel_bo_t *bo = to_intel_bo (shader->target->intel.drm.bo);
+	if (bo->exec == NULL)
+	    size += bo->base.size;
+    }
+
+    return size <= device->intel.gtt_avail_size;
+}
+
+static cairo_status_t
+i965_shader_setup_dst (i965_shader_t *shader)
+{
+    union i965_shader_channel *channel;
+    i965_surface_t *s, *clone;
+
+    /* We need to manual blending if we have a clip surface and an unbounded op,
+     * or an extended blend mode.
+     */
+    if (shader->need_combine ||
+	(shader->op < CAIRO_OPERATOR_SATURATE &&
+	 (shader->clip.type.fragment == FS_NONE ||
+	  _cairo_operator_bounded_by_mask (shader->op))))
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    shader->need_combine = TRUE;
+
+    s = shader->target;
+
+    /* we need to allocate a new render target and use the original as a source */
+    clone = (i965_surface_t *)
+	i965_surface_create_internal ((cairo_drm_device_t *) s->intel.drm.base.device,
+				      s->intel.drm.base.content,
+				      s->intel.drm.width,
+				      s->intel.drm.height,
+				      I965_TILING_DEFAULT,
+				      TRUE);
+    if (unlikely (clone->intel.drm.base.status))
+	return clone->intel.drm.base.status;
+
+    if (to_intel_bo (s->intel.drm.bo)->batch_write_domain)
+	i965_pipelined_flush (i965_device (s));
+
+    channel = &shader->dst;
+
+    channel->type.vertex = VS_NONE;
+    channel->type.fragment = FS_SURFACE;
+    channel->type.pattern = PATTERN_SURFACE;
+
+    /* swap buffer objects */
+    channel->base.bo = to_intel_bo (s->intel.drm.bo);
+    s->intel.drm.bo = ((cairo_drm_surface_t *) clone)->bo;
+    ((cairo_drm_surface_t *) clone)->bo = &channel->base.bo->base;
+
+    channel->base.content = s->intel.drm.base.content;
+    channel->base.format  = s->intel.drm.format;
+    channel->base.width   = s->intel.drm.width;
+    channel->base.height  = s->intel.drm.height;
+    channel->base.stride  = s->intel.drm.stride;
+
+    channel->base.filter = i965_filter (CAIRO_FILTER_NEAREST);
+    channel->base.extend = i965_extend (CAIRO_EXTEND_NONE);
+
+    cairo_matrix_init_scale (&channel->base.matrix,
+			     1. / s->intel.drm.width,
+			     1. / s->intel.drm.height);
+
+    channel->surface.surface = &clone->intel.drm.base;
+
+    s->intel.drm.base.content = clone->intel.drm.base.content;
+    s->intel.drm.format = clone->intel.drm.format;
+    assert (s->intel.drm.width == clone->intel.drm.width);
+    assert (s->intel.drm.height == clone->intel.drm.height);
+    s->intel.drm.stride = clone->intel.drm.stride;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static inline void
+constant_add_float (i965_shader_t *shader, float v)
+{
+    shader->constants[shader->constants_size++] = v;
+}
+
+static inline void
+i965_shader_copy_channel_constants (i965_shader_t *shader,
+				    const union i965_shader_channel *channel)
+{
+    if (channel->base.constants_size) {
+	assert (shader->constants_size + channel->base.constants_size < ARRAY_LENGTH (shader->constants));
+
+	memcpy (shader->constants + shader->constants_size,
+		channel->base.constants,
+		sizeof (float) * channel->base.constants_size);
+	shader->constants_size += channel->base.constants_size;
+    }
+}
+
+static void
+i965_shader_setup_channel_constants (i965_shader_t *shader,
+				     const union i965_shader_channel *channel)
+{
+    switch (channel->type.fragment) {
+    case FS_NONE:
+    case FS_CONSTANT:
+	/* no plane equations */
+	break;
+
+    case FS_LINEAR:
+	constant_add_float (shader, channel->base.matrix.xx);
+	constant_add_float (shader, channel->base.matrix.xy);
+	constant_add_float (shader, 0);
+	constant_add_float (shader, channel->base.matrix.x0);
+	break;
+
+    case FS_RADIAL:
+    case FS_SURFACE:
+	constant_add_float (shader, channel->base.matrix.xx);
+	constant_add_float (shader, channel->base.matrix.xy);
+	constant_add_float (shader, 0);
+	constant_add_float (shader, channel->base.matrix.x0);
+
+	constant_add_float (shader, channel->base.matrix.yx);
+	constant_add_float (shader, channel->base.matrix.yy);
+	constant_add_float (shader, 0);
+	constant_add_float (shader, channel->base.matrix.y0);
+	break;
+
+    case FS_SPANS:
+    case FS_GLYPHS:
+	/* use pue from SF */
+	break;
+    }
+
+    i965_shader_copy_channel_constants (shader, channel);
+}
+
+static void
+i965_shader_setup_constants (i965_shader_t *shader)
+{
+    i965_shader_setup_channel_constants (shader, &shader->source);
+    i965_shader_setup_channel_constants (shader, &shader->mask);
+    i965_shader_setup_channel_constants (shader, &shader->clip);
+    i965_shader_setup_channel_constants (shader, &shader->dst);
+    assert (shader->constants_size < ARRAY_LENGTH (shader->constants));
+}
+
+/*
+ * Highest-valued BLENDFACTOR used in i965_blend_op.
+ *
+ * This leaves out BRW_BLENDFACTOR_INV_DST_COLOR,
+ * BRW_BLENDFACTOR_INV_CONST_{COLOR,ALPHA},
+ * BRW_BLENDFACTOR_INV_SRC1_{COLOR,ALPHA}
+ */
+#define BRW_BLENDFACTOR_COUNT (BRW_BLENDFACTOR_INV_DST_ALPHA + 1)
+
+static void
+i965_shader_get_blend_cntl (const i965_shader_t *shader,
+			    uint32_t *sblend, uint32_t *dblend)
+{
+    static const struct blendinfo {
+	cairo_bool_t dst_alpha;
+	cairo_bool_t src_alpha;
+	uint32_t src_blend;
+	uint32_t dst_blend;
+    } i965_blend_op[] = {
+	/* CAIRO_OPERATOR_CLEAR treat as SOURCE with transparent */
+	{0, 0, BRW_BLENDFACTOR_ONE,          BRW_BLENDFACTOR_ZERO},
+	/* CAIRO_OPERATOR_SOURCE */
+	{0, 0, BRW_BLENDFACTOR_ONE,           BRW_BLENDFACTOR_ZERO},
+	/* CAIRO_OPERATOR_OVER */
+	{0, 1, BRW_BLENDFACTOR_ONE,           BRW_BLENDFACTOR_INV_SRC_ALPHA},
+	/* CAIRO_OPERATOR_IN */
+	{1, 0, BRW_BLENDFACTOR_DST_ALPHA,     BRW_BLENDFACTOR_ZERO},
+	/* CAIRO_OPERATOR_OUT */
+	{1, 0, BRW_BLENDFACTOR_INV_DST_ALPHA, BRW_BLENDFACTOR_ZERO},
+	/* CAIRO_OPERATOR_ATOP */
+	{1, 1, BRW_BLENDFACTOR_DST_ALPHA,     BRW_BLENDFACTOR_INV_SRC_ALPHA},
+
+	/* CAIRO_OPERATOR_DEST */
+	{0, 0, BRW_BLENDFACTOR_ZERO,          BRW_BLENDFACTOR_ONE},
+	/* CAIRO_OPERATOR_DEST_OVER */
+	{1, 0, BRW_BLENDFACTOR_INV_DST_ALPHA, BRW_BLENDFACTOR_ONE},
+	/* CAIRO_OPERATOR_DEST_IN */
+	{0, 1, BRW_BLENDFACTOR_ZERO,          BRW_BLENDFACTOR_SRC_ALPHA},
+	/* CAIRO_OPERATOR_DEST_OUT */
+	{0, 1, BRW_BLENDFACTOR_ZERO,          BRW_BLENDFACTOR_INV_SRC_ALPHA},
+	/* CAIRO_OPERATOR_DEST_ATOP */
+	{1, 1, BRW_BLENDFACTOR_INV_DST_ALPHA, BRW_BLENDFACTOR_SRC_ALPHA},
+	/* CAIRO_OPERATOR_XOR */
+	{1, 1, BRW_BLENDFACTOR_INV_DST_ALPHA, BRW_BLENDFACTOR_INV_SRC_ALPHA},
+	/* CAIRO_OPERATOR_ADD */
+	{0, 0, BRW_BLENDFACTOR_ONE,           BRW_BLENDFACTOR_ONE},
+    };
+    const struct blendinfo *op = &i965_blend_op[shader->op];
+
+    *sblend = op->src_blend;
+    *dblend = op->dst_blend;
+
+    /* If there's no dst alpha channel, adjust the blend op so that we'll treat
+     * it as always 1.
+     */
+    if (shader->target->intel.drm.base.content == CAIRO_CONTENT_COLOR &&
+	op->dst_alpha)
+    {
+	if (*sblend == BRW_BLENDFACTOR_DST_ALPHA)
+	    *sblend = BRW_BLENDFACTOR_ONE;
+	else if (*sblend == BRW_BLENDFACTOR_INV_DST_ALPHA)
+	    *sblend = BRW_BLENDFACTOR_ZERO;
+    }
+}
+
+static void
+emit_wm_subpans_to_pixels (struct brw_compile *compile,
+			   int tmp)
+{
+    /* Inputs:
+     * R1.5 x/y of upper-left pixel of subspan 3
+     * R1.4 x/y of upper-left pixel of subspan 2
+     * R1.3 x/y of upper-left pixel of subspan 1
+     * R1.2 x/y of upper-left pixel of subspan 0
+     *
+     * Outputs:
+     * M1,2: u
+     * M3,4: v
+     *
+     * upper left, upper right, lower left, lower right.
+     */
+
+    /* compute pixel locations for each subspan */
+    brw_set_compression_control (compile, BRW_COMPRESSION_NONE);
+    brw_ADD (compile,
+	     brw_vec8_grf (tmp),
+	     brw_reg (BRW_GENERAL_REGISTER_FILE, 1, 4,
+		      BRW_REGISTER_TYPE_UW,
+		      BRW_VERTICAL_STRIDE_2,
+		      BRW_WIDTH_4,
+		      BRW_HORIZONTAL_STRIDE_0,
+		      BRW_SWIZZLE_NOOP,
+		      WRITEMASK_XYZW),
+	     brw_imm_vf4 (VF_ZERO, VF_ONE, VF_ZERO, VF_ONE));
+    brw_ADD (compile,
+	     brw_vec8_grf (tmp+1),
+	     brw_reg (BRW_GENERAL_REGISTER_FILE, 1, 8,
+		      BRW_REGISTER_TYPE_UW,
+		      BRW_VERTICAL_STRIDE_2,
+		      BRW_WIDTH_4,
+		      BRW_HORIZONTAL_STRIDE_0,
+		      BRW_SWIZZLE_NOOP,
+		      WRITEMASK_XYZW),
+	     brw_imm_vf4 (VF_ZERO, VF_ONE, VF_ZERO, VF_ONE));
+    brw_ADD (compile,
+	     brw_vec8_grf (tmp+2),
+	     brw_reg (BRW_GENERAL_REGISTER_FILE, 1, 5,
+		      BRW_REGISTER_TYPE_UW,
+		      BRW_VERTICAL_STRIDE_2,
+		      BRW_WIDTH_4,
+		      BRW_HORIZONTAL_STRIDE_0,
+		      BRW_SWIZZLE_NOOP,
+		      WRITEMASK_XYZW),
+	     brw_imm_vf4 (VF_ZERO, VF_ZERO, VF_ONE, VF_ONE));
+    brw_ADD (compile,
+	     brw_vec8_grf (tmp+3),
+	     brw_reg (BRW_GENERAL_REGISTER_FILE, 1, 9,
+		      BRW_REGISTER_TYPE_UW,
+		      BRW_VERTICAL_STRIDE_2,
+		      BRW_WIDTH_4,
+		      BRW_HORIZONTAL_STRIDE_0,
+		      BRW_SWIZZLE_NOOP,
+		      WRITEMASK_XYZW),
+	     brw_imm_vf4 (VF_ZERO, VF_ZERO, VF_ONE, VF_ONE));
+    brw_set_compression_control (compile, BRW_COMPRESSION_COMPRESSED);
+}
+
+static void
+emit_wm_affine (struct brw_compile *compile,
+		int tmp, int reg, int msg)
+{
+    emit_wm_subpans_to_pixels (compile, tmp);
+
+    brw_LINE (compile,
+	      brw_null_reg (),
+	      brw_vec1_grf (reg, 0),
+	      brw_vec8_grf (tmp));
+    brw_MAC (compile,
+	     brw_message_reg (msg + 1),
+	     brw_vec1_grf (reg, 1),
+	     brw_vec8_grf (tmp+2));
+
+    brw_LINE (compile,
+	      brw_null_reg (),
+	      brw_vec1_grf (reg, 4),
+	      brw_vec8_grf (tmp));
+    brw_MAC (compile,
+	     brw_message_reg (msg + 3),
+	     brw_vec1_grf (reg, 5),
+	     brw_vec8_grf (tmp+2));
+}
+
+static void
+emit_wm_glyph (struct brw_compile *compile,
+	       int tmp, int vue, int msg)
+{
+    emit_wm_subpans_to_pixels (compile, tmp);
+
+    brw_MUL (compile,
+	     brw_null_reg (),
+	     brw_vec8_grf (tmp),
+	     brw_imm_f (1./1024));
+    brw_ADD (compile,
+	     brw_message_reg (msg + 1),
+	     brw_acc_reg (),
+	     brw_vec1_grf (vue, 0));
+
+    brw_MUL (compile,
+	     brw_null_reg (),
+	     brw_vec8_grf (tmp + 2),
+	     brw_imm_f (1./1024));
+    brw_ADD (compile,
+	     brw_message_reg (msg + 3),
+	     brw_acc_reg (),
+	     brw_vec1_grf (vue, 1));
+}
+
+static void
+emit_wm_load_constant (struct brw_compile *compile,
+		       int reg,
+		       struct brw_reg *result)
+{
+    int n;
+
+    for (n = 0; n < 4; n++) {
+	result[n] = result[n+4] = brw_reg (BRW_GENERAL_REGISTER_FILE, reg, n,
+					   BRW_REGISTER_TYPE_F,
+					   BRW_VERTICAL_STRIDE_0,
+					   BRW_WIDTH_1,
+					   BRW_HORIZONTAL_STRIDE_0,
+					   BRW_SWIZZLE_XXXX,
+					   WRITEMASK_XYZW);
+    }
+}
+
+static void
+emit_wm_load_opacity (struct brw_compile *compile,
+		      int reg,
+		      struct brw_reg *result)
+{
+    result[0] = result[1] = result[2] = result[3] =
+	result[4] = result[5] = result[6] = result[7] =
+	brw_reg (BRW_GENERAL_REGISTER_FILE, reg, 0,
+		 BRW_REGISTER_TYPE_F,
+		 BRW_VERTICAL_STRIDE_0,
+		 BRW_WIDTH_1,
+		 BRW_HORIZONTAL_STRIDE_1,
+		 BRW_SWIZZLE_XXXX,
+		 WRITEMASK_XYZW);
+}
+
+static void
+emit_wm_load_linear (struct brw_compile *compile,
+		     int tmp, int reg, int msg)
+{
+    emit_wm_subpans_to_pixels (compile, tmp);
+
+    brw_LINE (compile,
+	      brw_null_reg(),
+	      brw_vec1_grf (reg, 0),
+	      brw_vec8_grf (tmp));
+    brw_MAC (compile,
+	     brw_message_reg(msg + 1),
+	     brw_vec1_grf (reg, 1),
+	     brw_vec8_grf (tmp + 2));
+}
+
+static void
+emit_wm_load_radial (struct brw_compile *compile,
+		     int reg, int msg)
+
+{
+    struct brw_reg c1x = brw_vec1_grf (reg, 0);
+    struct brw_reg c1y = brw_vec1_grf (reg, 1);
+    struct brw_reg minus_r_sq = brw_vec1_grf (reg, 3);
+    struct brw_reg cdx = brw_vec1_grf (reg, 4);
+    struct brw_reg cdy = brw_vec1_grf (reg, 5);
+    struct brw_reg neg_4a = brw_vec1_grf (reg + 1, 0);
+    struct brw_reg inv_2a = brw_vec1_grf (reg + 1, 1);
+
+    struct brw_reg tmp_x = brw_uw16_grf (30, 0);
+    struct brw_reg tmp_y = brw_uw16_grf (28, 0);
+    struct brw_reg det = brw_vec8_grf (22);
+    struct brw_reg b = brw_vec8_grf (20);
+    struct brw_reg c = brw_vec8_grf (18);
+    struct brw_reg pdx = brw_vec8_grf (16);
+    struct brw_reg pdy = brw_vec8_grf (14);
+    struct brw_reg t = brw_message_reg (msg + 1);
+
+    /* cdx = (c₂x - c₁x)
+     * cdy = (c₂y - c₁y)
+     *  dr =  r₂-r₁
+     * pdx =  px - c₁x
+     * pdy =  py - c₁y
+     *
+     * A = cdx² + cdy² - dr²
+     * B = -2·(pdx·cdx + pdy·cdy + r₁·dr)
+     * C = pdx² + pdy² - r₁²
+     *
+     * t = (-2·B ± ⎷(B² - 4·A·C)) / 2·A
+     */
+
+    brw_ADD (compile, pdx, vec8 (tmp_x), negate (c1x));
+    brw_ADD (compile, pdy, vec8 (tmp_y), negate (c1y));
+
+    brw_LINE (compile, brw_null_reg (), cdx, pdx);
+    brw_MAC (compile, b, cdy, pdy);
+
+    brw_MUL (compile, brw_null_reg (), pdx, pdx);
+    brw_MAC (compile, c, pdy, pdy);
+    brw_ADD (compile, c, c, minus_r_sq);
+
+    brw_MUL (compile, brw_null_reg (), b, b);
+    brw_MAC (compile, det, neg_4a, c);
+
+    /* XXX use rsqrt like i915?, it's faster and we need to mac anyway */
+    brw_math (compile,
+	      det,
+	      BRW_MATH_FUNCTION_SQRT,
+	      BRW_MATH_SATURATE_NONE,
+	      2,
+	      det,
+	      BRW_MATH_DATA_VECTOR,
+	      BRW_MATH_PRECISION_FULL);
+
+    /* XXX cmp, +- */
+
+    brw_ADD (compile, det, negate (det), negate (b));
+    brw_ADD (compile, det, det, negate (b));
+    brw_MUL (compile, t, det, inv_2a);
+}
+
+static int
+emit_wm_sample (struct brw_compile *compile,
+		union i965_shader_channel *channel,
+		int sampler,
+		int msg_base, int msg_len,
+		int dst,
+		struct brw_reg *result)
+{
+    int response_len, mask;
+
+    if (channel->base.content == CAIRO_CONTENT_ALPHA) {
+	mask = 0x7000;
+	response_len = 2;
+	result[0] = result[1] = result[2] = result[3] = brw_vec8_grf (dst);
+	result[4] = result[5] = result[6] = result[7] = brw_vec8_grf (dst + 1);
+    } else {
+	mask = 0;
+	response_len = 8;
+	result[0] = brw_vec8_grf (dst + 0);
+	result[1] = brw_vec8_grf (dst + 2);
+	result[2] = brw_vec8_grf (dst + 4);
+	result[3] = brw_vec8_grf (dst + 6);
+	result[4] = brw_vec8_grf (dst + 1);
+	result[5] = brw_vec8_grf (dst + 3);
+	result[6] = brw_vec8_grf (dst + 5);
+	result[7] = brw_vec8_grf (dst + 7);
+    }
+
+    brw_set_compression_control (compile, BRW_COMPRESSION_NONE);
+
+    brw_set_mask_control (compile, BRW_MASK_DISABLE);
+    brw_MOV (compile,
+	     get_element_ud (brw_vec8_grf (0), 2),
+	     brw_imm_ud (mask));
+    brw_set_mask_control (compile, BRW_MASK_ENABLE);
+
+    brw_SAMPLE (compile,
+		brw_uw16_grf (dst, 0),
+		msg_base,
+		brw_uw8_grf (0, 0),
+		sampler + 1, /* binding table */
+		sampler,
+		WRITEMASK_XYZW,
+		BRW_SAMPLER_MESSAGE_SIMD16_SAMPLE,
+		response_len,
+		msg_len,
+		0 /* eot */);
+
+    brw_set_compression_control (compile, BRW_COMPRESSION_COMPRESSED);
+
+    return response_len;
+}
+
+#define MAX_MSG_REGISTER 16
+
+static void
+emit_wm_load_channel (struct brw_compile *compile,
+		      union i965_shader_channel *channel,
+		      int *vue,
+		      int *cue,
+		      int *msg,
+		      int *sampler,
+		      int *grf,
+		      struct brw_reg *result)
+{
+    switch (channel->type.fragment) {
+    case FS_NONE:
+	break;
+
+    case FS_CONSTANT:
+	emit_wm_load_constant (compile, *cue, result);
+	*cue += 1;
+	break;
+
+    case FS_RADIAL:
+	emit_wm_load_radial (compile, *cue, *msg);
+	*cue += 2;
+
+	if (*msg + 3 > MAX_MSG_REGISTER)
+	    *msg = 1;
+
+	*grf += emit_wm_sample (compile, channel, *sampler, *msg, 3, *grf, result);
+	*sampler += 1;
+	*msg += 3;
+	break;
+
+    case FS_LINEAR:
+	emit_wm_load_linear (compile, *grf, *cue, *msg);
+	*cue += 1;
+
+	if (*msg + 3 > MAX_MSG_REGISTER)
+	    *msg = 1;
+
+	*grf += emit_wm_sample (compile, channel, *sampler, *msg, 3, *grf, result);
+	*sampler += 1;
+	*msg += 3;
+	break;
+
+    case FS_SURFACE:
+	emit_wm_affine (compile, *grf, *cue, *msg);
+	*cue += 2;
+
+	if (*msg + 5 > MAX_MSG_REGISTER)
+	    *msg = 1;
+
+	*grf += emit_wm_sample (compile, channel, *sampler, *msg, 5, *grf, result);
+	*sampler += 1;
+	*msg += 5;
+	break;
+
+    case FS_SPANS:
+	emit_wm_load_opacity (compile, *vue, result);
+	*vue += 1;
+	break;
+
+    case FS_GLYPHS:
+	emit_wm_glyph (compile, *grf, *vue, *msg);
+	*vue += 1;
+
+	if (*msg + 5 > MAX_MSG_REGISTER)
+	    *msg = 1;
+
+	*grf += emit_wm_sample (compile, channel, *sampler, *msg, 5, *grf, result);
+	*sampler += 1;
+	*msg += 5;
+	break;
+    }
+}
+
+static unsigned long
+i965_wm_kernel_hash (const i965_shader_t *shader)
+{
+    unsigned long hash;
+
+    hash =
+	(shader->source.type.fragment & 0xff) |
+	(shader->mask.type.fragment & 0xff) << 8 |
+	(shader->clip.type.fragment & 0xff) << 16;
+    if (shader->need_combine)
+	hash |= (1 + shader->op) << 24;
+
+    return hash;
+}
+
+static void
+i965_wm_kernel_init (struct i965_wm_kernel *key,
+		     const i965_shader_t *shader)
+{
+    key->entry.hash = i965_wm_kernel_hash (shader);
+}
+
+static uint32_t
+i965_shader_const_urb_length (i965_shader_t *shader)
+{
+    const int lengths[] = { 0, 1, 1, 4, 2, 0, 0 };
+    int count = 0; /* 128-bit/16-byte increments */
+
+    count += lengths[shader->source.type.fragment];
+    count += lengths[shader->mask.type.fragment];
+    count += lengths[shader->clip.type.fragment];
+    count += lengths[shader->dst.type.fragment];
+
+    return (count + 1) / 2; /* 256-bit/32-byte increments */
+}
+
+static uint32_t
+i965_shader_pue_length (i965_shader_t *shader)
+{
+    return 1 + (shader->mask.type.vertex != VS_NONE);
+}
+
+static uint32_t
+create_wm_kernel (i965_device_t *device,
+		  i965_shader_t *shader,
+		  int *num_reg)
+{
+    struct brw_compile compile;
+    struct brw_reg source[8], mask[8], clip[8], dst[8];
+    const uint32_t *program;
+    uint32_t size;
+    int msg, cue, vue, grf, sampler;
+    int i;
+
+    struct i965_wm_kernel key, *cache;
+    cairo_status_t status;
+    uint32_t offset;
+
+    i965_wm_kernel_init (&key, shader);
+    cache = _cairo_hash_table_lookup (device->wm_kernels, &key.entry);
+    if (cache != NULL)
+	return cache->offset;
+
+    brw_compile_init (&compile, device->is_g4x);
+
+    if (key.entry.hash == FS_CONSTANT &&
+	to_intel_bo (shader->target->intel.drm.bo)->tiling)
+    {
+	struct brw_instruction *insn;
+
+	assert (i965_shader_const_urb_length (shader) == 1);
+	brw_MOV (&compile, brw_message4_reg (2), brw_vec4_grf (2, 0));
+	grf = 3;
+
+	brw_push_insn_state (&compile);
+	brw_set_mask_control (&compile, BRW_MASK_DISABLE); /* ? */
+	brw_MOV (&compile,
+		 retype (brw_message_reg (1), BRW_REGISTER_TYPE_UD),
+		 retype (brw_vec8_grf (1), BRW_REGISTER_TYPE_UD));
+	brw_pop_insn_state (&compile);
+
+	insn = brw_next_instruction (&compile, BRW_OPCODE_SEND);
+	insn->header.predicate_control = 0;
+	insn->header.compression_control = BRW_COMPRESSION_NONE;
+	insn->header.destreg__conditonalmod = 0;
+
+	brw_instruction_set_destination (insn,
+					 retype (vec16 (brw_acc_reg ()),
+						 BRW_REGISTER_TYPE_UW));
+
+	brw_instruction_set_source0 (insn,
+				     retype (brw_vec8_grf (0),
+					     BRW_REGISTER_TYPE_UW));
+
+	brw_instruction_set_dp_write_message (insn,
+					      0,
+					      BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE_REPLICATED, /* msg_control */
+					      BRW_DATAPORT_WRITE_MESSAGE_RENDER_TARGET_WRITE, /* msg_type */
+					      3,
+					      1,	/* pixel scoreboard */
+					      0,
+					      TRUE);
+    }
+    else
+    {
+	msg = 1;
+	cue = 2;
+	vue = cue + i965_shader_const_urb_length (shader);
+	grf = vue + i965_shader_pue_length (shader);
+	sampler = 0;
+
+	brw_set_compression_control (&compile, BRW_COMPRESSION_COMPRESSED);
+	emit_wm_load_channel (&compile, &shader->source,
+			      &vue, &cue, &msg, &sampler, &grf,
+			      source);
+	emit_wm_load_channel (&compile, &shader->mask,
+			      &vue, &cue, &msg, &sampler, &grf,
+			      mask);
+	emit_wm_load_channel (&compile, &shader->clip,
+			      &vue, &cue, &msg, &sampler, &grf,
+			      clip);
+	emit_wm_load_channel (&compile, &shader->dst,
+			      &vue, &cue, &msg, &sampler, &grf,
+			      dst);
+	brw_set_compression_control (&compile, BRW_COMPRESSION_NONE);
+
+	if (shader->need_combine) {
+	    if (shader->mask.type.fragment != FS_NONE &&
+		shader->clip.type.fragment != FS_NONE)
+	    {
+		for (i = 0; i < 8; i++)
+		    brw_MUL (&compile, mask[i], mask[i], clip[i]);
+	    }
+
+	    /* XXX LERP ! */
+	    for (i = 0; i < 8; i++)
+		brw_MOV (&compile, brw_message_reg (2 + i), source[i]);
+	} else {
+	    if (shader->mask.type.fragment != FS_NONE) {
+		if (shader->clip.type.fragment != FS_NONE) {
+		    for (i = 0; i < 8; i++)
+			brw_MUL (&compile, mask[i], mask[i], clip[i]);
+		}
+
+		for (i = 0; i < 8; i++)
+		    brw_MUL (&compile, brw_message_reg (2 + i), source[i], mask[i]);
+	    } else {
+		if (shader->clip.type.fragment != FS_NONE) {
+		    for (i = 0; i < 8; i++)
+			brw_MUL (&compile, brw_message_reg (2 + i), source[i], clip[i]);
+		} else {
+		    for (i = 0; i < 8; i++)
+			brw_MOV (&compile, brw_message_reg (2 + i), source[i]);
+		}
+	    }
+	}
+
+	brw_push_insn_state (&compile);
+	brw_set_mask_control (&compile, BRW_MASK_DISABLE); /* ? */
+	brw_MOV (&compile,
+		 retype (brw_message_reg (1), BRW_REGISTER_TYPE_UD),
+		 retype (brw_vec8_grf (1), BRW_REGISTER_TYPE_UD));
+	brw_pop_insn_state (&compile);
+
+	brw_fb_WRITE (&compile,
+		      retype (vec16 (brw_acc_reg ()), BRW_REGISTER_TYPE_UW),
+		      0,		/* base reg */
+		      retype (brw_vec8_grf (0), BRW_REGISTER_TYPE_UW),
+		      0,		/* binding table index */
+		      2 + 8,	/* msg length */
+		      0,		/* response length */
+		      TRUE);	/* EOT */
+    }
+
+    program = brw_get_program (&compile, &size);
+    *num_reg = grf;
+
+    i965_stream_align (&device->general, 64);
+    offset = i965_stream_emit (&device->general, program, size);
+
+    cache = _cairo_freelist_alloc (&device->wm_kernel_freelist);
+    if (likely (cache != NULL)) {
+	i965_wm_kernel_init (cache, shader);
+	cache->offset = offset;
+	status = _cairo_hash_table_insert (device->wm_kernels, &cache->entry);
+	if (unlikely (status))
+	    _cairo_freelist_free (&device->wm_kernel_freelist, cache);
+    }
+
+    return offset;
+}
+
+static uint32_t
+create_sf_kernel (i965_device_t *device,
+		  i965_shader_t *shader)
+{
+    struct brw_compile compile;
+    const uint32_t *program;
+    uint32_t size;
+    int msg_len;
+
+    brw_compile_init (&compile, device->is_g4x);
+
+    switch (shader->mask.type.vertex) {
+    default:
+    case VS_NONE:
+	/* use curb plane eq in WM */
+	msg_len = 1;
+	break;
+
+    case VS_SPANS:
+	/* just a constant opacity */
+	brw_MOV (&compile,
+		 brw_message4_reg (1),
+		 brw_vec4_grf (3, 0));
+	msg_len = 2;
+	break;
+
+    case VS_GLYPHS:
+	/* an offset+sf into the glyph cache */
+	brw_MOV (&compile,
+		 brw_acc_reg (),
+		 brw_vec2_grf (3, 0));
+	brw_MAC (&compile,
+		 brw_message4_reg (1),
+		 negate (brw_vec2_grf (1, 4)),
+		 brw_imm_f (1./1024));
+	msg_len = 2;
+	break;
+    }
+
+    brw_urb_WRITE (&compile,
+		   brw_null_reg (),
+		   0,
+		   brw_vec8_grf (0), /* r0, will be copied to m0 */
+		   0,	/* allocate */
+		   1,	/* used */
+		   msg_len,
+		   0,	/* response len */
+		   1,	/* eot */
+		   1,	/* writes complete */
+		   0,	/* offset */
+		   BRW_URB_SWIZZLE_NONE);
+
+    program = brw_get_program (&compile, &size);
+
+    i965_stream_align (&device->general, 64);
+    return i965_stream_emit (&device->general, program, size);
+}
+
+static uint32_t
+i965_sf_kernel (const i965_shader_t *shader)
+{
+    return shader->mask.type.vertex;
+}
+
+static void
+i965_sf_state_init (struct i965_sf_state *key,
+		    const i965_shader_t *shader)
+{
+    key->entry.hash = i965_sf_kernel (shader);
+}
+
+cairo_bool_t
+i965_sf_state_equal (const void *A, const void *B)
+{
+    const cairo_hash_entry_t *a = A, *b = B;
+    return a->hash == b->hash;
+}
+
+/*
+ * Sets up the SF state pointing at an SF kernel.
+ *
+ * The SF kernel does coord interp: for each attribute,
+ * calculate dA/dx and dA/dy.  Hand these interpolation coefficients
+ * back to SF which then hands pixels off to WM.
+ */
+static uint32_t
+gen4_create_sf_state (i965_device_t *device,
+		      i965_shader_t *shader)
+{
+    struct brw_sf_unit_state *state;
+    struct i965_sf_state key, *cache;
+    cairo_status_t status;
+    uint32_t offset;
+
+    i965_sf_state_init (&key, shader);
+    if (i965_sf_state_equal (&key, &device->sf_state))
+	return device->sf_state.offset;
+
+    cache = _cairo_hash_table_lookup (device->sf_states, &key.entry);
+    if (cache != NULL) {
+	offset = cache->offset;
+	goto DONE;
+    }
+
+    offset = create_sf_kernel (device, shader);
+
+    state = i965_stream_alloc (&device->general, 32, sizeof (*state));
+    memset (state, 0, sizeof (*state));
+
+    state->thread0.grf_reg_count = BRW_GRF_BLOCKS (3);
+    assert ((offset & 63) == 0);
+    state->thread0.kernel_start_pointer = offset >> 6;
+    state->sf1.single_program_flow = 1;
+    state->thread3.urb_entry_read_length = 1; /* 1 URB per vertex */
+    state->thread3.urb_entry_read_offset = 1;
+    state->thread3.dispatch_grf_start_reg = 3;
+    state->thread4.max_threads = SF_MAX_THREADS - 1;
+    state->thread4.urb_entry_allocation_size = URB_SF_ENTRY_SIZE - 1;
+    state->thread4.nr_urb_entries = URB_SF_ENTRIES;
+    state->sf6.dest_org_vbias = 0x8;
+    state->sf6.dest_org_hbias = 0x8;
+
+    offset = i965_stream_offsetof (&device->general, state);
+
+    cache = _cairo_freelist_alloc (&device->sf_freelist);
+    if (likely (cache != NULL)) {
+	i965_sf_state_init (cache, shader);
+	cache->offset = offset;
+	status = _cairo_hash_table_insert (device->sf_states, &cache->entry);
+	if (unlikely (status))
+	    _cairo_freelist_free (&device->sf_freelist, cache);
+    }
+
+  DONE:
+    i965_sf_state_init (&device->sf_state, shader);
+    device->sf_state.offset = offset;
+
+    return offset;
+}
+
+static unsigned long
+i965_shader_sampler_hash (const i965_shader_t *shader)
+{
+    unsigned long hash = 0;
+    unsigned int offset = 0;
+
+    if (shader->source.base.bo != NULL) {
+	hash |= (shader->source.base.filter << offset) |
+	        (shader->source.base.extend << (offset + 4));
+	offset += 8;
+    }
+
+    if (shader->mask.base.bo != NULL) {
+	hash |= (shader->mask.base.filter << offset) |
+	        (shader->mask.base.extend << (offset + 4));
+	offset += 8;
+    }
+
+    if (shader->clip.base.bo != NULL) {
+	hash |= (shader->clip.base.filter << offset) |
+	        (shader->clip.base.extend << (offset + 4));
+	offset += 8;
+    }
+
+    if (shader->dst.base.bo != NULL) {
+	hash |= (shader->dst.base.filter << offset) |
+	        (shader->dst.base.extend << (offset + 4));
+	offset += 8;
+    }
+
+    return hash;
+}
+
+static void
+i965_sampler_init (struct i965_sampler *key,
+		   const i965_shader_t *shader)
+{
+    key->entry.hash = i965_shader_sampler_hash (shader);
+}
+
+static void
+emit_sampler_channel (i965_device_t *device,
+		      const union i965_shader_channel *channel,
+		      uint32_t border_color)
+{
+    struct brw_sampler_state *state;
+
+    state = i965_stream_alloc (&device->general, 0, sizeof (*state));
+    memset (state, 0, sizeof (*state));
+
+    state->ss0.lod_preclamp = 1; /* GL mode */
+
+    state->ss0.border_color_mode = BRW_BORDER_COLOR_MODE_LEGACY;
+
+    state->ss0.min_filter = channel->base.filter;
+    state->ss0.mag_filter = channel->base.filter;
+
+    state->ss1.r_wrap_mode = channel->base.extend;
+    state->ss1.s_wrap_mode = channel->base.extend;
+    state->ss1.t_wrap_mode = channel->base.extend;
+
+    assert ((border_color & 31) == 0);
+    state->ss2.border_color_pointer = border_color >> 5;
+}
+
+static uint32_t
+emit_sampler_state_table (i965_device_t *device,
+			  i965_shader_t *shader)
+{
+    struct i965_sampler key, *cache;
+    cairo_status_t status;
+    uint32_t offset;
+
+    if (device->border_color_offset == (uint32_t) -1) {
+	struct brw_sampler_legacy_border_color *border_color;
+
+	border_color = i965_stream_alloc (&device->general, 32,
+					  sizeof (*border_color));
+	border_color->color[0] = 0; /* R */
+	border_color->color[1] = 0; /* G */
+	border_color->color[2] = 0; /* B */
+	border_color->color[3] = 0; /* A */
+
+	device->border_color_offset = i965_stream_offsetof (&device->general,
+							    border_color);
+    } else {
+	i965_sampler_init (&key, shader);
+	cache = _cairo_hash_table_lookup (device->samplers, &key.entry);
+	if (cache != NULL)
+	    return cache->offset;
+    }
+
+    i965_stream_align (&device->general, 32);
+    offset = device->general.used;
+    if (shader->source.base.bo != NULL) {
+	emit_sampler_channel (device,
+			      &shader->source,
+			      device->border_color_offset);
+    }
+    if (shader->mask.base.bo != NULL) {
+	emit_sampler_channel (device,
+			      &shader->mask,
+			      device->border_color_offset);
+    }
+    if (shader->clip.base.bo != NULL) {
+	emit_sampler_channel (device,
+			      &shader->clip,
+			      device->border_color_offset);
+    }
+    if (shader->dst.base.bo != NULL) {
+	emit_sampler_channel (device,
+			      &shader->dst,
+			      device->border_color_offset);
+    }
+
+    cache = _cairo_freelist_alloc (&device->sampler_freelist);
+    if (likely (cache != NULL)) {
+	i965_sampler_init (cache, shader);
+	cache->offset = offset;
+	status = _cairo_hash_table_insert (device->samplers, &cache->entry);
+	if (unlikely (status))
+	    _cairo_freelist_free (&device->sampler_freelist, cache);
+    }
+
+    return offset;
+}
+
+static void
+i965_cc_state_init (struct i965_cc_state *key,
+		    const i965_shader_t *shader)
+{
+    uint32_t src_blend, dst_blend;
+
+    if (shader->need_combine)
+	src_blend = dst_blend = 0;
+    else
+	i965_shader_get_blend_cntl (shader, &src_blend, &dst_blend);
+
+    key->entry.hash = src_blend | ((dst_blend & 0xffff) << 16);
+}
+
+cairo_bool_t
+i965_cc_state_equal (const void *A, const void *B)
+{
+    const cairo_hash_entry_t *a = A, *b = B;
+    return a->hash == b->hash;
+}
+
+static uint32_t
+cc_state_emit (i965_device_t *device, i965_shader_t *shader)
+{
+    struct brw_cc_unit_state *state;
+    struct i965_cc_state key, *cache;
+    cairo_status_t status;
+    uint32_t src_blend, dst_blend;
+    uint32_t offset;
+
+    i965_cc_state_init (&key, shader);
+    if (i965_cc_state_equal (&key, &device->cc_state))
+	return device->cc_state.offset;
+
+    cache = _cairo_hash_table_lookup (device->cc_states, &key.entry);
+    if (cache != NULL) {
+	offset = cache->offset;
+	goto DONE;
+    }
+
+    if (shader->need_combine)
+	src_blend = dst_blend = 0;
+    else
+	i965_shader_get_blend_cntl (shader, &src_blend, &dst_blend);
+
+    state = i965_stream_alloc (&device->general, 64, sizeof (*state));
+    memset (state, 0, sizeof (*state));
+
+    /* XXX Note errata, need to flush render cache when blend_enable 0 -> 1 */
+    /* XXX 2 source blend */
+    state->cc3.blend_enable = ! shader->need_combine;
+    state->cc5.ia_blend_function = BRW_BLENDFUNCTION_ADD;
+    state->cc5.ia_src_blend_factor  = src_blend;
+    state->cc5.ia_dest_blend_factor = dst_blend;
+    state->cc6.blend_function = BRW_BLENDFUNCTION_ADD;
+    state->cc6.clamp_post_alpha_blend = 1;
+    state->cc6.clamp_pre_alpha_blend  = 1;
+    state->cc6.src_blend_factor  = src_blend;
+    state->cc6.dest_blend_factor = dst_blend;
+
+    offset = i965_stream_offsetof (&device->general, state);
+
+    cache = _cairo_freelist_alloc (&device->cc_freelist);
+    if (likely (cache != NULL)) {
+	i965_cc_state_init (cache, shader);
+	cache->offset = offset;
+	status = _cairo_hash_table_insert (device->cc_states, &cache->entry);
+	if (unlikely (status))
+	    _cairo_freelist_free (&device->cc_freelist, cache);
+    }
+
+  DONE:
+    i965_cc_state_init (&device->cc_state, shader);
+    device->cc_state.offset = offset;
+
+    return offset;
+}
+
+static void
+i965_wm_state_init (struct i965_wm_state *key,
+		    const i965_shader_t *shader)
+{
+    key->kernel = i965_wm_kernel_hash (shader);
+    key->sampler = i965_shader_sampler_hash (shader);
+
+    key->entry.hash = key->kernel ^ ((key->sampler) << 16 | (key->sampler >> 16));
+}
+
+cairo_bool_t
+i965_wm_state_equal (const void *A, const void *B)
+{
+    const struct i965_wm_state *a = A, *b = B;
+
+    if (a->entry.hash != b->entry.hash)
+	return FALSE;
+
+    return a->kernel == b->kernel && a->sampler == b->sampler;
+}
+
+static int
+i965_shader_binding_table_count (i965_shader_t *shader)
+{
+    int count;
+
+    count = 1;
+    if (shader->source.type.fragment != FS_CONSTANT)
+	count++;
+    switch (shader->mask.type.fragment) {
+    case FS_NONE:
+    case FS_CONSTANT:
+    case FS_SPANS:
+	break;
+    case FS_LINEAR:
+    case FS_RADIAL:
+    case FS_SURFACE:
+    case FS_GLYPHS:
+	count++;
+    }
+    if (shader->clip.type.fragment == FS_SURFACE)
+	count++;
+    if (shader->dst.type.fragment == FS_SURFACE)
+	count++;
+
+    return count;
+}
+
+static uint32_t
+gen4_create_wm_state (i965_device_t *device,
+		      i965_shader_t *shader)
+{
+    struct brw_wm_unit_state *state;
+    uint32_t sampler;
+    uint32_t kernel;
+
+    struct i965_wm_state key, *cache;
+    cairo_status_t status;
+    int num_reg;
+
+    i965_wm_state_init (&key, shader);
+    if (i965_wm_state_equal (&key, &device->wm_state))
+	return device->wm_state.offset;
+
+    cache = _cairo_hash_table_lookup (device->wm_states, &key.entry);
+    if (cache != NULL) {
+	device->wm_state = *cache;
+	return cache->offset;
+    }
+
+    kernel = create_wm_kernel (device, shader, &num_reg);
+    sampler = emit_sampler_state_table (device, shader);
+
+    state = i965_stream_alloc (&device->general, 32, sizeof (*state));
+    memset (state, 0, sizeof (*state));
+    state->thread0.grf_reg_count = BRW_GRF_BLOCKS (num_reg);
+    assert ((kernel & 63) == 0);
+    state->thread0.kernel_start_pointer = kernel >> 6;
+
+    state->thread3.dispatch_grf_start_reg = 2;
+
+    state->wm4.sampler_count = 1; /* 1-4 samplers used */
+    assert ((sampler & 31) == 0);
+    state->wm4.sampler_state_pointer = sampler >> 5;
+    if (device->is_g4x)
+	state->wm5.max_threads = PS_MAX_THREADS_CTG - 1;
+    else
+	state->wm5.max_threads = PS_MAX_THREADS_BRW - 1;
+    state->wm5.thread_dispatch_enable = 1;
+
+    if (device->is_g4x) {
+	/* XXX contiguous 32 pixel dispatch */
+    }
+    state->wm5.enable_16_pix = 1;
+    /* 8 pixel dispatch and friends */
+    //state->wm5.early_depth_test = 1;
+
+    state->thread1.binding_table_entry_count = i965_shader_binding_table_count(shader);
+    state->thread3.urb_entry_read_length = i965_shader_pue_length (shader);
+    state->thread3.const_urb_entry_read_length = i965_shader_const_urb_length (shader);
+
+    key.offset = i965_stream_offsetof (&device->general, state);
+
+    cache = _cairo_freelist_alloc (&device->wm_state_freelist);
+    if (likely (cache != NULL)) {
+	*cache = key;
+	status = _cairo_hash_table_insert (device->wm_states, &cache->entry);
+	if (unlikely (status))
+	    _cairo_freelist_free (&device->wm_state_freelist, cache);
+    }
+
+    device->wm_state = key;
+    return key.offset;
+}
+
+static uint32_t
+vs_unit_state_emit (i965_device_t *device)
+{
+    if (device->vs_offset == (uint32_t) -1) {
+	struct brw_vs_unit_state *state;
+
+	/* Set up the vertex shader to be disabled (passthrough) */
+	state = i965_stream_alloc (&device->general, 32, sizeof (*state));
+	memset (state, 0, sizeof (*state));
+
+	state->thread4.nr_urb_entries = URB_VS_ENTRIES;
+	state->thread4.urb_entry_allocation_size = URB_VS_ENTRY_SIZE - 1;
+	state->vs6.vert_cache_disable = 1;
+
+	device->vs_offset = i965_stream_offsetof (&device->general, state);
+    }
+
+    return device->vs_offset;
+}
+
+static uint32_t
+i965_get_card_format (cairo_format_t format)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+	return BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
+    case CAIRO_FORMAT_RGB24:
+	return BRW_SURFACEFORMAT_B8G8R8X8_UNORM;
+    case CAIRO_FORMAT_RGB16_565:
+	return BRW_SURFACEFORMAT_B5G6R5_UNORM;
+    case CAIRO_FORMAT_A8:
+	return BRW_SURFACEFORMAT_A8_UNORM;
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+static uint32_t
+i965_get_dest_format (cairo_format_t format)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+        return BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
+    case CAIRO_FORMAT_RGB16_565:
+        return BRW_SURFACEFORMAT_B5G6R5_UNORM;
+    case CAIRO_FORMAT_A8:
+        return BRW_SURFACEFORMAT_A8_UNORM;
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_INVALID:
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+/* XXX silly inline due to compiler bug... */
+static inline void
+i965_stream_add_pending_relocation (i965_stream_t *stream,
+				    uint32_t target_offset,
+				    uint32_t read_domains,
+				    uint32_t write_domain,
+				    uint32_t delta)
+{
+    int n;
+
+    n = stream->num_pending_relocations++;
+    assert (n < stream->max_pending_relocations);
+
+    stream->pending_relocations[n].offset = target_offset;
+    stream->pending_relocations[n].read_domains = read_domains;
+    stream->pending_relocations[n].write_domain = write_domain;
+    stream->pending_relocations[n].delta = delta;
+}
+
+static uint32_t
+emit_surface_state (i965_device_t *device,
+		    cairo_bool_t is_target,
+		    intel_bo_t *bo,
+		    cairo_format_t format,
+		    int width, int height, int stride,
+		    int type)
+{
+    struct brw_surface_state *state;
+    uint32_t write_domain, read_domains;
+    uint32_t offset;
+
+    state = i965_stream_alloc (&device->surface, 32, sizeof (*state));
+    memset (state, 0, sizeof (*state));
+
+    state->ss0.surface_type = type;
+    if (is_target)
+	state->ss0.surface_format = i965_get_dest_format (format);
+    else
+	state->ss0.surface_format = i965_get_card_format (format);
+
+    state->ss0.data_return_format = BRW_SURFACERETURNFORMAT_FLOAT32;
+    state->ss0.color_blend = 1;
+    if (is_target && device->is_g4x)
+	state->ss0.render_cache_read_mode = 1;
+
+    state->ss1.base_addr = bo->offset;
+
+    state->ss2.height = height - 1;
+    state->ss2.width  = width  - 1;
+    state->ss3.pitch  = stride - 1;
+    state->ss3.tile_walk = bo->tiling == I915_TILING_Y;
+    state->ss3.tiled_surface = bo->tiling != I915_TILING_NONE;
+
+    if (is_target) {
+	read_domains = I915_GEM_DOMAIN_RENDER;
+	write_domain = I915_GEM_DOMAIN_RENDER;
+    } else {
+	read_domains = I915_GEM_DOMAIN_SAMPLER;
+	write_domain = 0;
+    }
+
+    offset = i965_stream_offsetof (&device->surface, state);
+    i965_emit_relocation (device, &device->surface,
+			  bo, 0,
+			  read_domains, write_domain,
+			  offset + offsetof (struct brw_surface_state, ss1.base_addr));
+    return offset;
+}
+
+static uint32_t
+emit_surface_state_for_shader (i965_device_t *device,
+			       const union i965_shader_channel *channel)
+{
+    int type = BRW_SURFACE_2D;
+
+    assert (channel->type.fragment != FS_NONE);
+    assert (channel->type.fragment != FS_CONSTANT);
+
+    if (channel->type.fragment != FS_SURFACE)
+	type = BRW_SURFACE_1D;
+
+    return emit_surface_state (device, FALSE,
+			       channel->base.bo,
+			       channel->base.format,
+			       channel->base.width,
+			       channel->base.height,
+			       channel->base.stride,
+			       type);
+}
+
+cairo_bool_t
+i965_wm_binding_equal (const void *A,
+		       const void *B)
+{
+    const struct i965_wm_binding *a = A, *b = B;
+
+    if (a->entry.hash != b->entry.hash)
+	return FALSE;
+
+    if (a->size != b->size)
+	return FALSE;
+
+    return memcmp (a->table, b->table, sizeof (uint32_t) * a->size) == 0;
+}
+
+static void
+i965_wm_binding_init (struct i965_wm_binding *state,
+		      const uint32_t *table,
+		      int size)
+{
+    int n;
+
+    state->entry.hash = size;
+    state->size = size;
+
+    for (n = 0; n < size; n++) {
+	state->table[n] = table[n];
+	state->entry.hash ^= (table[n] << (8 * n)) |
+	                     (table[n] >> (32 - (8*n)));
+    }
+}
+
+static uint32_t
+emit_binding_table (i965_device_t *device,
+		    i965_shader_t *shader)
+{
+    intel_bo_t *bo;
+    struct i965_wm_binding key, *cache;
+    uint32_t *table;
+    int n = 0;
+
+    table = i965_stream_alloc (&device->surface, 32, 5 * sizeof (uint32_t));
+    if (shader->target->stream != device->surface.serial) {
+	shader->target->stream = device->surface.serial;
+	shader->target->offset = emit_surface_state (device,
+						     TRUE,
+						     to_intel_bo (shader->target->intel.drm.bo),
+						     shader->target->intel.drm.format,
+						     shader->target->intel.drm.width,
+						     shader->target->intel.drm.height,
+						     shader->target->intel.drm.stride,
+						     BRW_SURFACE_2D);
+    }
+    table[n++] = shader->target->offset;
+
+    bo = shader->source.base.bo;
+    if (bo != NULL) {
+	if (bo->opaque0 != device->surface.serial) {
+	    bo->opaque0 = device->surface.serial;
+	    bo->opaque1 = emit_surface_state_for_shader (device, &shader->source);
+	}
+	table[n++] = bo->opaque1;
+    }
+
+    bo = shader->mask.base.bo;
+    if (bo != NULL) {
+	if (bo->opaque0 != device->surface.serial) {
+	    bo->opaque0 = device->surface.serial;
+	    bo->opaque1 = emit_surface_state_for_shader (device, &shader->mask);
+	}
+	table[n++] = bo->opaque1;
+    }
+
+    bo = shader->clip.base.bo;
+    if (bo != NULL) {
+	if (bo->opaque0 != device->surface.serial) {
+	    bo->opaque0 = device->surface.serial;
+	    bo->opaque1 = emit_surface_state_for_shader (device, &shader->clip);
+	}
+	table[n++] = bo->opaque1;
+    }
+
+    bo = shader->dst.base.bo;
+    if (bo != NULL) {
+	if (bo->opaque0 != device->surface.serial) {
+	    bo->opaque0 = device->surface.serial;
+	    bo->opaque1 = emit_surface_state_for_shader (device, &shader->dst);
+	}
+	table[n++] = bo->opaque1;
+    }
+
+    i965_wm_binding_init (&key, table, n);
+    key.offset = i965_stream_offsetof (&device->surface, table);
+
+    if (i965_wm_binding_equal (&key, &device->wm_binding)) {
+	device->surface.used = key.offset;
+	return device->wm_binding.offset;
+    }
+
+    cache = _cairo_hash_table_lookup (device->wm_bindings, &key.entry);
+    if (cache != NULL) {
+	device->surface.used = key.offset;
+	key.offset = cache->offset;
+    }
+
+    device->wm_binding = key;
+    return key.offset;
+}
+
+static void
+i965_emit_invariants (i965_device_t *device)
+{
+    OUT_BATCH (BRW_CS_URB_STATE | 0);
+    OUT_BATCH (((URB_CS_ENTRY_SIZE-1) << 4) | (URB_CS_ENTRIES << 0));
+}
+
+static void
+i965_emit_urb_fences (i965_device_t *device)
+{
+    int urb_vs_start, urb_vs_size;
+    int urb_gs_start, urb_gs_size;
+    int urb_clip_start, urb_clip_size;
+    int urb_sf_start, urb_sf_size;
+    int urb_cs_start, urb_cs_size;
+
+    if (device->have_urb_fences)
+	return;
+
+    /* URB fence */
+    urb_vs_start = 0;
+    urb_vs_size = URB_VS_ENTRIES * URB_VS_ENTRY_SIZE;
+    urb_gs_start = urb_vs_start + urb_vs_size;
+    urb_gs_size = URB_GS_ENTRIES * URB_GS_ENTRY_SIZE;
+    urb_clip_start = urb_gs_start + urb_gs_size;
+    urb_clip_size = URB_CLIP_ENTRIES * URB_CLIP_ENTRY_SIZE;
+    urb_sf_start = urb_clip_start + urb_clip_size;
+    urb_sf_size = URB_SF_ENTRIES * URB_SF_ENTRY_SIZE;
+    urb_cs_start = urb_sf_start + urb_sf_size;
+    urb_cs_size = URB_CS_ENTRIES * URB_CS_ENTRY_SIZE;
+
+    /* erratum: URB_FENCE must not cross a 64-byte cache-line */
+    while ((device->batch.used & 63) > 64-12)
+	OUT_BATCH (MI_NOOP);
+    OUT_BATCH (BRW_URB_FENCE |
+	       UF0_CS_REALLOC |
+	       UF0_SF_REALLOC |
+	       UF0_CLIP_REALLOC |
+	       UF0_GS_REALLOC |
+	       UF0_VS_REALLOC |
+	       1);
+    OUT_BATCH (((urb_clip_start + urb_clip_size) << UF1_CLIP_FENCE_SHIFT) |
+	       ((urb_gs_start + urb_gs_size) << UF1_GS_FENCE_SHIFT) |
+	       ((urb_vs_start + urb_vs_size) << UF1_VS_FENCE_SHIFT));
+    OUT_BATCH (((urb_cs_start + urb_cs_size) << UF2_CS_FENCE_SHIFT) |
+	       ((urb_sf_start + urb_sf_size) << UF2_SF_FENCE_SHIFT));
+
+    device->have_urb_fences = TRUE;
+    device->constants_size = 0;
+}
+
+static void
+i965_emit_base (i965_device_t *device)
+{
+    OUT_BATCH (BRW_STATE_BASE_ADDRESS | 4);
+    if (likely (device->general.num_pending_relocations == 0)) {
+	i965_stream_add_pending_relocation (&device->general,
+					    device->batch.used,
+					    I915_GEM_DOMAIN_INSTRUCTION, 0,
+					    BASE_ADDRESS_MODIFY);
+    }
+    OUT_BATCH (0); /* pending relocation */
+
+    if (likely (device->surface.num_pending_relocations == 0)) {
+	i965_stream_add_pending_relocation (&device->surface,
+					    device->batch.used,
+					    I915_GEM_DOMAIN_INSTRUCTION, 0,
+					    BASE_ADDRESS_MODIFY);
+    }
+    OUT_BATCH (0); /* pending relocation */
+
+    OUT_BATCH (0 | BASE_ADDRESS_MODIFY);
+    /* general state max addr, disabled */
+    OUT_BATCH (0x10000000 | BASE_ADDRESS_MODIFY);
+    /* media object state max addr, disabled */
+    OUT_BATCH (0x10000000 | BASE_ADDRESS_MODIFY);
+}
+
+static void
+i965_emit_vertex_element (i965_device_t *device,
+			  i965_shader_t *shader)
+{
+    uint32_t offset;
+    uint32_t type;
+    int nelem;
+
+    type = 0;
+    nelem = 1;
+    if (shader->mask.type.vertex == VS_SPANS ||
+	shader->mask.type.vertex == VS_GLYPHS)
+    {
+	type = shader->mask.type.vertex;
+	nelem++;
+    }
+
+    if (type == device->vertex_type)
+	return;
+    device->vertex_type = type;
+
+    offset = 0;
+
+    OUT_BATCH (BRW_3DSTATE_VERTEX_ELEMENTS | ((2 * nelem) - 1));
+    OUT_BATCH ((0 << VE0_VERTEX_BUFFER_INDEX_SHIFT) |
+	       VE0_VALID |
+	       (BRW_SURFACEFORMAT_R32G32_FLOAT	<< VE0_FORMAT_SHIFT) |
+	       (offset				<< VE0_OFFSET_SHIFT));
+    OUT_BATCH ((BRW_VFCOMPONENT_STORE_SRC	<< VE1_VFCOMPONENT_0_SHIFT) |
+	       (BRW_VFCOMPONENT_STORE_SRC	<< VE1_VFCOMPONENT_1_SHIFT) |
+	       (BRW_VFCOMPONENT_STORE_0		<< VE1_VFCOMPONENT_2_SHIFT) |
+	       (BRW_VFCOMPONENT_STORE_1_FLT	<< VE1_VFCOMPONENT_3_SHIFT) |
+	       (4 << VE1_DESTINATION_ELEMENT_OFFSET_SHIFT));
+    offset += 8;
+
+    assert (shader->source.type.vertex == VS_NONE);
+    switch (shader->mask.type.vertex) {
+    default:
+    case VS_NONE:
+	break;
+
+    case VS_SPANS:
+	OUT_BATCH((0 << VE0_VERTEX_BUFFER_INDEX_SHIFT) |
+		  VE0_VALID |
+		  (BRW_SURFACEFORMAT_R32_FLOAT << VE0_FORMAT_SHIFT) |
+		  (offset			<< VE0_OFFSET_SHIFT));
+	OUT_BATCH((BRW_VFCOMPONENT_STORE_SRC	<< VE1_VFCOMPONENT_0_SHIFT) |
+		  (BRW_VFCOMPONENT_NOSTORE	<< VE1_VFCOMPONENT_1_SHIFT) |
+		  (BRW_VFCOMPONENT_NOSTORE	<< VE1_VFCOMPONENT_2_SHIFT) |
+		  (BRW_VFCOMPONENT_NOSTORE	<< VE1_VFCOMPONENT_3_SHIFT) |
+		  (8 << VE1_DESTINATION_ELEMENT_OFFSET_SHIFT));
+
+	offset += 4;
+	break;
+
+    case VS_GLYPHS:
+	OUT_BATCH((0 << VE0_VERTEX_BUFFER_INDEX_SHIFT) |
+		  VE0_VALID |
+		  (BRW_SURFACEFORMAT_R16G16_FLOAT << VE0_FORMAT_SHIFT) |
+		  (offset			<< VE0_OFFSET_SHIFT));
+	OUT_BATCH((BRW_VFCOMPONENT_STORE_SRC	<< VE1_VFCOMPONENT_0_SHIFT) |
+		  (BRW_VFCOMPONENT_STORE_SRC	<< VE1_VFCOMPONENT_1_SHIFT) |
+		  (BRW_VFCOMPONENT_NOSTORE	<< VE1_VFCOMPONENT_2_SHIFT) |
+		  (BRW_VFCOMPONENT_NOSTORE	<< VE1_VFCOMPONENT_3_SHIFT) |
+		  (8 << VE1_DESTINATION_ELEMENT_OFFSET_SHIFT));
+
+	offset += 4;
+	break;
+    }
+    assert (shader->clip.type.vertex == VS_NONE);
+    assert (shader->dst.type.vertex == VS_NONE);
+
+    device->vertex_size = offset;
+    i965_stream_align (&device->vertex, device->vertex_size);
+    device->vertex.committed = device->vertex.used;
+
+    device->rectangle_size = 3 * offset;
+}
+
+static cairo_bool_t
+i965_shader_needs_surface_update (const i965_shader_t *shader,
+				  const i965_device_t *device)
+{
+    return device->target != shader->target || shader->target->stream == 0 ||
+	(shader->source.base.bo != NULL && device->source != shader->source.base.bo) ||
+	(shader->mask.base.bo != NULL && device->mask != shader->mask.base.bo) ||
+	(shader->clip.base.bo != NULL && device->clip != shader->clip.base.bo);
+}
+
+static cairo_bool_t
+i965_shader_needs_constants_update (const i965_shader_t *shader,
+				    const i965_device_t *device)
+{
+    if (shader->constants_size == 0)
+	return FALSE;
+
+    if (device->constants_size != shader->constants_size)
+	return TRUE;
+
+    return memcmp (device->constants,
+		   shader->constants,
+		   sizeof (float) * shader->constants_size);
+}
+
+static cairo_bool_t
+i965_shader_needs_state_update (const i965_shader_t *shader,
+				const i965_device_t *device)
+{
+    union {
+	struct i965_sf_state sf;
+	struct i965_wm_state wm;
+	struct i965_cc_state cc;
+    } state;
+
+    i965_sf_state_init (&state.sf, shader);
+    if (! i965_sf_state_equal (&state.sf, &device->sf_state))
+	return TRUE;
+
+    i965_wm_state_init (&state.wm, shader);
+    if (! i965_wm_state_equal (&state.wm, &device->wm_state))
+	return TRUE;
+
+    i965_cc_state_init (&state.cc, shader);
+    if (! i965_cc_state_equal (&state.cc, &device->cc_state))
+	return TRUE;
+
+    return FALSE;
+}
+
+static void
+i965_emit_composite (i965_device_t *device,
+		     i965_shader_t *shader)
+{
+    uint32_t draw_rectangle;
+
+    if (i965_shader_needs_surface_update (shader, device)) {
+	uint32_t offset;
+
+	offset = emit_binding_table (device, shader);
+
+	/* Only the PS uses the binding table */
+	OUT_BATCH (BRW_3DSTATE_BINDING_TABLE_POINTERS | 4);
+	OUT_BATCH (0); /* vs */
+	OUT_BATCH (0); /* gs */
+	OUT_BATCH (0); /* clip */
+	OUT_BATCH (0); /* sf */
+	OUT_BATCH (offset);
+
+	device->target = shader->target;
+	device->source = shader->source.base.bo;
+	device->mask = shader->mask.base.bo;
+	device->clip = shader->clip.base.bo;
+    }
+
+    /* The drawing rectangle clipping is always on.  Set it to values that
+     * shouldn't do any clipping.
+     */
+    draw_rectangle = DRAW_YMAX (shader->target->intel.drm.height) |
+	             DRAW_XMAX (shader->target->intel.drm.width);
+    if (draw_rectangle != device->draw_rectangle) {
+	OUT_BATCH (BRW_3DSTATE_DRAWING_RECTANGLE | 2);
+	OUT_BATCH (0x00000000);	/* ymin, xmin */
+	OUT_BATCH (draw_rectangle);
+	OUT_BATCH (0x00000000);	/* yorigin, xorigin */
+	device->draw_rectangle = draw_rectangle;
+    }
+
+    /* skip the depth buffer */
+    /* skip the polygon stipple */
+    /* skip the polygon stipple offset */
+    /* skip the line stipple */
+
+    /* Set the pointers to the 3d pipeline state */
+    if (i965_shader_needs_state_update (shader, device)) {
+	OUT_BATCH (BRW_3DSTATE_PIPELINED_POINTERS | 5);
+	OUT_BATCH (vs_unit_state_emit (device));
+	OUT_BATCH (BRW_GS_DISABLE);
+	OUT_BATCH (BRW_CLIP_DISABLE);
+	OUT_BATCH (gen4_create_sf_state (device, shader));
+	OUT_BATCH (gen4_create_wm_state (device, shader));
+	OUT_BATCH (cc_state_emit (device, shader));
+
+	/* Once the units are initialized, we need to setup the fences */
+	i965_emit_urb_fences (device);
+    }
+
+    if (i965_shader_needs_constants_update (shader, device)) {
+	uint32_t size = (sizeof (float) * shader->constants_size + 63) & -64;
+
+	/* XXX reuse clear/black/white
+	 * ht!
+	*/
+
+	/* XXX CONSTANT_BUFFER Address Offset Disable? INSTPM? */
+
+	assert (size <= 64 * URB_CS_ENTRY_SIZE);
+	assert (((sizeof (float) * shader->constants_size + 31) & -32) == 32 * i965_shader_const_urb_length (shader));
+
+	device->constants = i965_stream_alloc (&device->surface, 64, size);
+	memcpy (device->constants, shader->constants, size);
+	device->constants_size = shader->constants_size;
+
+	OUT_BATCH (BRW_CONSTANT_BUFFER | (1 << 8));
+	OUT_BATCH (i965_stream_offsetof (&device->surface, device->constants) + size / 64 - 1);
+    }
+
+    i965_emit_vertex_element (device, shader);
+}
+
+void
+i965_flush_vertices (i965_device_t *device)
+{
+    int vertex_count, vertex_start;
+
+    if (device->vertex.used == device->vertex.committed)
+	return;
+
+    assert (device->vertex.used > device->vertex.committed);
+
+    vertex_start = device->vertex.committed / device->vertex_size;
+    vertex_count =
+	(device->vertex.used - device->vertex.committed) / device->vertex_size;
+
+    assert (vertex_count);
+
+    if (device->vertex_size != device->last_vertex_size) {
+	i965_stream_add_pending_relocation (&device->vertex,
+					    device->batch.used + 8,
+					    I915_GEM_DOMAIN_VERTEX, 0,
+					    0);
+
+	OUT_BATCH (BRW_3DSTATE_VERTEX_BUFFERS | 3);
+	OUT_BATCH ((0 << VB0_BUFFER_INDEX_SHIFT) |
+		   VB0_VERTEXDATA |
+		   (device->vertex_size << VB0_BUFFER_PITCH_SHIFT));
+	OUT_BATCH (0); /* pending relocation */
+	OUT_BATCH (0);
+	OUT_BATCH (0);
+	device->last_vertex_size = device->vertex_size;
+    }
+
+    OUT_BATCH (BRW_3DPRIMITIVE |
+	       BRW_3DPRIMITIVE_VERTEX_SEQUENTIAL |
+	       (_3DPRIM_RECTLIST << BRW_3DPRIMITIVE_TOPOLOGY_SHIFT) |
+	       (0 << 9) |
+	       4);
+    OUT_BATCH (vertex_count);  /* vertex count per instance */
+    OUT_BATCH (vertex_start);  /* start vertex offset */
+    OUT_BATCH (1); /* single instance */
+    OUT_BATCH (0);
+    OUT_BATCH (0);
+
+    device->vertex.committed = device->vertex.used;
+}
+
+void
+i965_finish_vertices (i965_device_t *device)
+{
+    cairo_status_t status;
+
+    i965_flush_vertices (device);
+
+    i965_stream_commit (device, &device->vertex);
+
+    if (! i965_shader_check_aperture (device->shader, device)) {
+	status = i965_device_flush (device);
+	if (unlikely (status))
+	    longjmp (device->shader->unwind, status);
+
+	status = i965_shader_commit (device->shader, device);
+	assert (status == CAIRO_STATUS_SUCCESS);
+    }
+
+    device->last_vertex_size = 0;
+}
+
+static cairo_bool_t
+i965_shader_needs_update (const i965_shader_t *shader,
+			  const i965_device_t *device)
+{
+    if (i965_shader_needs_surface_update (shader, device))
+	return TRUE;
+
+    if (i965_shader_needs_constants_update (shader, device))
+	return TRUE;
+
+    return i965_shader_needs_state_update (shader, device);
+}
+
+static void
+i965_shader_reduce (i965_shader_t *shader,
+		    const i965_device_t *device)
+{
+    if (shader->op == CAIRO_OPERATOR_OVER &&
+	(i965_wm_kernel_hash (shader) & ~0xff) == 0 &&
+	(shader->source.base.content & CAIRO_CONTENT_ALPHA) == 0)
+    {
+	shader->op = CAIRO_OPERATOR_SOURCE;
+    }
+}
+
+cairo_status_t
+i965_shader_commit (i965_shader_t *shader,
+		    i965_device_t *device)
+{
+    cairo_status_t status;
+
+    if (! shader->committed) {
+	device->shader = shader;
+
+	status = i965_shader_setup_dst (shader);
+	if (unlikely (status))
+	    return status;
+
+	i965_shader_setup_constants (shader);
+	i965_shader_reduce (shader, device);
+
+	if ((status = setjmp (shader->unwind)))
+	    return status;
+
+	shader->committed = TRUE;
+    }
+
+    if (! i965_shader_needs_update (shader, device))
+	return CAIRO_STATUS_SUCCESS;
+
+    /* XXX too many guestimates about likely maximum sizes */
+recheck:
+    if (device->batch.used + 128 > device->batch.size ||
+	! i965_shader_check_aperture (shader, device))
+    {
+	status = i965_device_flush (device);
+	if (unlikely (status))
+	    longjmp (shader->unwind, status);
+    }
+
+    i965_flush_vertices (device);
+
+    if (unlikely (device->surface.used + 128 > device->surface.size ||
+		  device->surface.num_relocations + 4 > device->surface.max_relocations))
+    {
+	i965_stream_commit (device, &device->surface);
+	goto recheck;
+    }
+
+    if (unlikely (device->general.used + 512 > device->general.size)) {
+	i965_stream_commit (device, &device->general);
+	i965_general_state_reset (device);
+	goto recheck;
+    }
+
+    if (unlikely (device->batch.used == 0))
+	i965_emit_invariants (device);
+
+    if (unlikely (device->surface.num_pending_relocations == 0 ||
+		  device->general.num_pending_relocations == 0))
+    {
+	i965_emit_base (device);
+    }
+
+    i965_emit_composite (device, shader);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+i965_clipped_vertices (i965_device_t *device,
+		       struct i965_vbo *vbo,
+		       cairo_region_t *clip_region)
+{
+    int i, num_rectangles, size;
+    cairo_status_t status;
+
+    if (vbo->count == 0)
+	return;
+
+    num_rectangles = cairo_region_num_rectangles (clip_region);
+    assert (num_rectangles);
+
+    if (vbo->next ||
+	vbo->count * device->vertex_size + device->vertex.used > device->vertex.size)
+    {
+	i965_finish_vertices (device);
+
+	size = device->rectangle_size;
+	do {
+	    for (i = 0; i < num_rectangles; i++) {
+		cairo_rectangle_int_t rect;
+
+		cairo_region_get_rectangle (clip_region, i, &rect);
+
+		if (unlikely (device->vertex.used + size > device->vertex.size ||
+			      device->batch.used + 64 > device->batch.size ||
+			      ! i965_shader_check_aperture (device->shader, device)))
+		{
+		    status = i965_device_flush (device);
+		    if (unlikely (status))
+			longjmp (device->shader->unwind, status);
+
+		    status = i965_shader_commit (device->shader, device);
+		    assert (status == CAIRO_STATUS_SUCCESS);
+		}
+
+		i965_emit_relocation (device, &device->batch,
+				      vbo->bo, 0,
+				      I915_GEM_DOMAIN_VERTEX, 0,
+				      device->batch.used + 8);
+
+		OUT_BATCH (BRW_3DSTATE_VERTEX_BUFFERS | 3);
+		OUT_BATCH ((0 << VB0_BUFFER_INDEX_SHIFT) |
+			   VB0_VERTEXDATA |
+			   (device->vertex_size << VB0_BUFFER_PITCH_SHIFT));
+		OUT_BATCH (vbo->bo->offset);
+		OUT_BATCH (0);
+		OUT_BATCH (0);
+
+		/* XXX scissor? */
+		OUT_BATCH (BRW_3DSTATE_DRAWING_RECTANGLE | 2);
+		OUT_BATCH (DRAW_YMIN (rect.y) | DRAW_XMIN (rect.x));
+		OUT_BATCH (DRAW_YMAX (rect.y + rect.height) |
+			   DRAW_XMAX (rect.x + rect.width));
+		OUT_BATCH (0x00000000);	/* yorigin, xorigin */
+
+		OUT_BATCH (BRW_3DPRIMITIVE |
+			   BRW_3DPRIMITIVE_VERTEX_SEQUENTIAL |
+			   (_3DPRIM_RECTLIST << BRW_3DPRIMITIVE_TOPOLOGY_SHIFT) |
+			   (0 << 9) |
+			   4);
+		OUT_BATCH (vbo->count);  /* vertex count per instance */
+		OUT_BATCH (0);  /* start vertex offset */
+		OUT_BATCH (1); /* single instance */
+		OUT_BATCH (0);
+		OUT_BATCH (0);
+	    }
+	} while ((vbo = vbo->next) != NULL);
+	assert (device->last_vertex_size == 0);
+    } else {
+	int vertex_start, vertex_count;
+	void *ptr;
+
+	vertex_start = device->vertex.committed / device->vertex_size;
+	vertex_count = vbo->count;
+
+	size = vertex_count * device->vertex_size;
+	ptr = intel_bo_map (&device->intel, vbo->bo);
+	memcpy (device->vertex.data + device->vertex.used, ptr, size);
+	device->vertex.committed = device->vertex.used += size;
+
+	for (i = 0; i < num_rectangles; i++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (clip_region, i, &rect);
+
+	    /* XXX scissor? */
+	    OUT_BATCH (BRW_3DSTATE_DRAWING_RECTANGLE | 2);
+	    OUT_BATCH (DRAW_YMIN (rect.y) | DRAW_XMIN (rect.x));
+	    OUT_BATCH (DRAW_YMAX (rect.y + rect.height) |
+		       DRAW_XMAX (rect.x + rect.width));
+	    OUT_BATCH (0x00000000);	/* yorigin, xorigin */
+
+	    OUT_BATCH (BRW_3DPRIMITIVE |
+		       BRW_3DPRIMITIVE_VERTEX_SEQUENTIAL |
+		       (_3DPRIM_RECTLIST << BRW_3DPRIMITIVE_TOPOLOGY_SHIFT) |
+		       (0 << 9) |
+		       4);
+	    OUT_BATCH (vertex_count);  /* vertex count per instance */
+	    OUT_BATCH (vertex_start);  /* start vertex offset */
+	    OUT_BATCH (1); /* single instance */
+	    OUT_BATCH (0);
+	    OUT_BATCH (0);
+	}
+    }
+
+    device->draw_rectangle = 0;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i965-spans.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-spans.c
new file mode 100644
index 0000000..4d1f491
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-spans.c
@@ -0,0 +1,407 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-boxes-private.h"
+#include "cairo-error-private.h"
+#include "cairo-drm-i965-private.h"
+
+/* Operates in either immediate or retained mode.
+ * When given a clip region we record the sequence of vbo and then
+ * replay them for each clip rectangle, otherwise we simply emit
+ * the vbo straight into the command stream.
+ */
+
+typedef struct _i965_spans i965_spans_t;
+
+typedef float *
+(*i965_get_rectangle_func_t) (i965_spans_t *spans);
+
+struct _i965_spans {
+    cairo_span_renderer_t renderer;
+
+    i965_device_t *device;
+
+    int xmin, xmax;
+    cairo_bool_t is_bounded;
+    const cairo_rectangle_int_t *extents;
+
+    i965_get_rectangle_func_t get_rectangle;
+    i965_shader_t shader;
+
+    cairo_region_t *clip_region;
+
+    struct i965_vbo head, *tail;
+
+    unsigned int vbo_offset;
+    float *vbo_base;
+};
+
+static float *
+i965_spans_emit_rectangle (i965_spans_t *spans)
+{
+    return i965_add_rectangle (spans->device);
+}
+
+static float *
+i965_spans_accumulate_rectangle (i965_spans_t *spans)
+{
+    float *vertices;
+    uint32_t size;
+
+    size = spans->device->rectangle_size;
+    if (unlikely (spans->vbo_offset + size > I965_VERTEX_SIZE)) {
+	struct i965_vbo *vbo;
+
+	vbo = _cairo_malloc (sizeof (struct i965_vbo));
+	if (unlikely (vbo == NULL)) {
+	    /* throw error! */
+	}
+
+	spans->tail->next = vbo;
+	spans->tail = vbo;
+
+	vbo->next = NULL;
+	vbo->bo = intel_bo_create (&spans->device->intel,
+				   I965_VERTEX_SIZE, I965_VERTEX_SIZE,
+				   FALSE, I915_TILING_NONE, 0);
+	vbo->count = 0;
+
+	spans->vbo_offset = 0;
+	spans->vbo_base = intel_bo_map (&spans->device->intel, vbo->bo);
+    }
+
+    vertices = spans->vbo_base + spans->vbo_offset;
+    spans->vbo_offset += size;
+    spans->tail->count += 3;
+
+    return vertices;
+}
+
+static void
+i965_span_rectangle (i965_spans_t *spans,
+		     int x0, int x1, int y0, int y1,
+		     int alpha)
+{
+    float *vertices;
+    float a = alpha / 255.;
+
+    vertices = spans->get_rectangle (spans);
+
+    *vertices++ = x1;
+    *vertices++ = y1;
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y1;
+    *vertices++ = a;
+
+    *vertices++ = x0;
+    *vertices++ = y0;
+    *vertices++ = a;
+}
+
+static cairo_status_t
+i965_bounded_spans_mono (void *abstract_renderer,
+			 int y, int height,
+			 const cairo_half_open_span_t *half,
+			 unsigned num_spans)
+{
+    i965_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (half[0].coverage >= 128) {
+	    i965_span_rectangle (spans,
+				 half[0].x, half[1].x,
+				 y, y + height,
+				 255);
+	}
+	half++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_bounded_spans (void *abstract_renderer,
+		    int y, int height,
+		    const cairo_half_open_span_t *half,
+		    unsigned num_spans)
+{
+    i965_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    do {
+	if (half[0].coverage) {
+	    i965_span_rectangle (spans,
+				 half[0].x, half[1].x,
+				 y, y + height,
+				 half[0].coverage);
+	}
+	half++;
+    } while (--num_spans > 1);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_unbounded_spans (void *abstract_renderer,
+		      int y, int height,
+		      const cairo_half_open_span_t *half,
+		      unsigned num_spans)
+{
+    i965_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0) {
+	i965_span_rectangle (spans,
+			     spans->xmin, spans->xmax,
+			     y, y + height,
+			     0);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (half[0].x != spans->xmin) {
+	i965_span_rectangle (spans,
+			     spans->xmin, half[0].x,
+			     y, y + height,
+			     0);
+    }
+
+    do {
+	i965_span_rectangle (spans,
+			     half[0].x, half[1].x,
+			     y, y + height,
+			     half[0].coverage);
+	half++;
+    } while (--num_spans > 1);
+
+    if (half[0].x != spans->xmax) {
+	i965_span_rectangle (spans,
+			     half[0].x, spans->xmax,
+			     y, y + height,
+			     0);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_unbounded_spans_mono (void *abstract_renderer,
+			   int y, int height,
+			   const cairo_half_open_span_t *half,
+			   unsigned num_spans)
+{
+    i965_spans_t *spans = abstract_renderer;
+
+    if (num_spans == 0) {
+	i965_span_rectangle (spans,
+			     spans->xmin, spans->xmax,
+			     y, y + height,
+			     0);
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (half[0].x != spans->xmin) {
+	i965_span_rectangle (spans,
+			     spans->xmin, half[0].x,
+			     y, y + height,
+			     0);
+    }
+
+    do {
+	int alpha = 0;
+	if (half[0].coverage >= 128)
+	    alpha = 255;
+	i965_span_rectangle (spans,
+			     half[0].x, half[1].x,
+			     y, y + height,
+			     alpha);
+	half++;
+    } while (--num_spans > 1);
+
+    if (half[0].x != spans->xmax) {
+	i965_span_rectangle (spans,
+			     half[0].x, spans->xmax,
+			     y, y + height,
+			     0);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+i965_spans_init (i965_spans_t *spans,
+		 i965_surface_t *dst,
+		 cairo_operator_t op,
+		 const cairo_pattern_t *pattern,
+		 cairo_antialias_t antialias,
+		 cairo_clip_t *clip,
+		 const cairo_composite_rectangles_t *extents)
+{
+    cairo_status_t status;
+
+    spans->device = i965_device (dst);
+    i965_shader_init (&spans->shader, dst, op);
+
+    spans->is_bounded = extents->is_bounded;
+    if (extents->is_bounded) {
+	if (antialias == CAIRO_ANTIALIAS_NONE)
+	    spans->renderer.render_rows = i965_bounded_spans_mono;
+	else
+	    spans->renderer.render_rows = i965_bounded_spans;
+
+	spans->extents = &extents->bounded;
+    } else {
+	if (antialias == CAIRO_ANTIALIAS_NONE)
+	    spans->renderer.render_rows = i965_unbounded_spans_mono;
+	else
+	    spans->renderer.render_rows = i965_unbounded_spans;
+
+	spans->extents = &extents->unbounded;
+    }
+    spans->xmin = spans->extents->x;
+    spans->xmax = spans->extents->x + spans->extents->width;
+
+    spans->clip_region = NULL;
+    if (clip != NULL) {
+	cairo_region_t *clip_region = NULL;
+
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || status == CAIRO_INT_STATUS_UNSUPPORTED);
+
+	if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1)
+	    clip_region = NULL;
+
+	spans->clip_region = clip_region;
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    i965_shader_set_clip (&spans->shader, clip);
+    }
+
+    spans->head.next  = NULL;
+    spans->head.bo    = NULL;
+    spans->head.count = 0;
+    spans->tail = &spans->head;
+
+    if (spans->clip_region == NULL) {
+	spans->get_rectangle = i965_spans_emit_rectangle;
+    } else {
+	spans->get_rectangle = i965_spans_accumulate_rectangle;
+	spans->head.bo = intel_bo_create (&spans->device->intel,
+					  I965_VERTEX_SIZE, I965_VERTEX_SIZE,
+					  FALSE, I915_TILING_NONE, 0);
+	if (unlikely (spans->head.bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	spans->vbo_base = intel_bo_map (&spans->device->intel, spans->head.bo);
+    }
+    spans->vbo_offset = 0;
+
+    return i965_shader_acquire_pattern (&spans->shader,
+					&spans->shader.source,
+					pattern, &extents->bounded);
+}
+
+static void
+i965_spans_fini (i965_spans_t *spans)
+{
+    i965_shader_fini (&spans->shader);
+
+    if (spans->head.bo != NULL) {
+	struct i965_vbo *vbo, *next;
+
+	intel_bo_destroy (&spans->device->intel, spans->head.bo);
+	for (vbo = spans->head.next; vbo != NULL; vbo = next) {
+	    next = vbo->next;
+	    intel_bo_destroy (&spans->device->intel, vbo->bo);
+	    free (vbo);
+	}
+    }
+}
+
+cairo_status_t
+i965_clip_and_composite_spans (i965_surface_t		*dst,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*pattern,
+			       cairo_antialias_t	 antialias,
+			       i965_spans_func_t	 draw_func,
+			       void			*draw_closure,
+			       const cairo_composite_rectangles_t*extents,
+			       cairo_clip_t		*clip)
+{
+    i965_spans_t spans;
+    i965_device_t *device;
+    cairo_status_t status;
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	pattern = &_cairo_pattern_white.base;
+	op = CAIRO_OPERATOR_DEST_OUT;
+    }
+
+    status = i965_spans_init (&spans, dst, op, pattern, antialias, clip, extents);
+    if (unlikely (status))
+	return status;
+
+    spans.shader.mask.base.content  = CAIRO_CONTENT_ALPHA;
+    spans.shader.mask.type.fragment = FS_SPANS;
+    spans.shader.mask.type.vertex   = VS_SPANS;
+    spans.shader.mask.type.pattern  = PATTERN_BASE;
+
+    status = cairo_device_acquire (dst->intel.drm.base.device);
+    if (unlikely (status))
+	goto CLEANUP_SPANS;
+
+    device = i965_device (dst);
+    status = i965_shader_commit (&spans.shader, device);
+    if (unlikely (status))
+	goto CLEANUP_DEVICE;
+
+    status = draw_func (draw_closure, &spans.renderer, spans.extents);
+    if (spans.clip_region != NULL && status == CAIRO_STATUS_SUCCESS)
+	i965_clipped_vertices (device, &spans.head, spans.clip_region);
+
+  CLEANUP_DEVICE:
+    cairo_device_release (dst->intel.drm.base.device);
+  CLEANUP_SPANS:
+    i965_spans_fini (&spans);
+
+    return status;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-i965-surface.c b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-surface.c
new file mode 100644
index 0000000..9d29e47
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-i965-surface.c
@@ -0,0 +1,1926 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Kristian Høgsberg
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2009 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Kristian Høgsberg.
+ *
+ * Based on the xf86-intel-driver i965 render acceleration code,
+ * authored by:
+ *    Wang Zhenyu <zhenyu.z.wang@intel.com>
+ *    Eric Anholt <eric@anholt.net>
+ *    Carl Worth <cworth@redhat.com>
+ *    Keith Packard <keithp@keithp.com>
+ */
+
+/* XXX
+ *
+ * FIXME: Use brw_PLN for [DevCTG-B+]
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-intel-private.h"
+#include "cairo-drm-intel-command-private.h"
+#include "cairo-drm-intel-ioctl-private.h"
+#include "cairo-drm-i965-private.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-offset-private.h"
+
+#include <sys/ioctl.h>
+#include <errno.h>
+
+#define I965_MAX_SIZE 8192
+
+static const cairo_surface_backend_t i965_surface_backend;
+
+static void
+i965_stream_init (i965_stream_t *stream,
+		  uint8_t *data, uint32_t size,
+		  struct i965_pending_relocation *pending, int max_pending,
+		  struct drm_i915_gem_relocation_entry *relocations, int max_relocations)
+
+{
+    stream->used = stream->committed = 0;
+    stream->data = data;
+    stream->size = size;
+    stream->serial = 1;
+
+    stream->num_pending_relocations = 0;
+    stream->max_pending_relocations = max_pending;
+    stream->pending_relocations = pending;
+
+    stream->num_relocations = 0;
+    stream->max_relocations = max_relocations;
+    stream->relocations = relocations;
+}
+
+static void
+i965_add_relocation (i965_device_t *device,
+		     intel_bo_t *bo,
+		     uint32_t read_domains,
+		     uint32_t write_domain)
+{
+    if (bo->exec == NULL) {
+	int i;
+
+	device->exec.gtt_size += bo->base.size;
+
+	i = device->exec.count++;
+	assert (i < ARRAY_LENGTH (device->exec.exec));
+
+	device->exec.exec[i].handle = bo->base.handle;
+	device->exec.exec[i].relocation_count = 0;
+	device->exec.exec[i].relocs_ptr = 0;
+	device->exec.exec[i].alignment  = 0;
+	device->exec.exec[i].offset = 0;
+	device->exec.exec[i].flags  = 0;
+	device->exec.exec[i].rsvd1  = 0;
+	device->exec.exec[i].rsvd2  = 0;
+
+	device->exec.bo[i] = intel_bo_reference (bo);
+	bo->exec = &device->exec.exec[i];
+    }
+
+    if (cairo_list_is_empty (&bo->link))
+	cairo_list_add_tail (&device->flush, &bo->link);
+
+    assert (write_domain == 0 || bo->batch_write_domain == 0 || bo->batch_write_domain == write_domain);
+    bo->batch_read_domains |= read_domains;
+    bo->batch_write_domain |= write_domain;
+}
+
+void
+i965_emit_relocation (i965_device_t *device,
+		      i965_stream_t *stream,
+		      intel_bo_t *target,
+		      uint32_t target_offset,
+		      uint32_t read_domains,
+		      uint32_t write_domain,
+		      uint32_t offset)
+{
+    int n;
+
+    assert (target_offset < target->base.size);
+
+    i965_add_relocation (device, target, read_domains, write_domain);
+
+    n = stream->num_relocations++;
+    assert (n < stream->max_relocations);
+
+    stream->relocations[n].offset = offset;
+    stream->relocations[n].delta  = target_offset;
+    stream->relocations[n].target_handle   = target->base.handle;
+    stream->relocations[n].read_domains    = read_domains;
+    stream->relocations[n].write_domain    = write_domain;
+    stream->relocations[n].presumed_offset = target->offset;
+}
+
+static void
+i965_stream_reset (i965_stream_t *stream)
+{
+    stream->used = stream->committed = 0;
+    stream->num_relocations = 0;
+    stream->num_pending_relocations = 0;
+    if (++stream->serial == 0)
+	stream->serial = 1;
+}
+
+void
+i965_stream_commit (i965_device_t *device,
+		    i965_stream_t *stream)
+{
+    intel_bo_t *bo;
+    int n;
+
+    assert (stream->used);
+
+    bo = intel_bo_create (&device->intel,
+			  stream->used, stream->used,
+			  FALSE, I915_TILING_NONE, 0);
+
+    /* apply pending relocations */
+    for (n = 0; n < stream->num_pending_relocations; n++) {
+	struct i965_pending_relocation *p = &stream->pending_relocations[n];
+
+	i965_emit_relocation (device, &device->batch, bo,
+			      p->delta,
+			      p->read_domains,
+			      p->write_domain,
+			      p->offset);
+	if (bo->offset)
+	    *(uint32_t *) (device->batch.data + p->offset) = bo->offset + p->delta;
+    }
+
+    intel_bo_write (&device->intel, bo, 0, stream->used, stream->data);
+
+    if (stream->num_relocations) {
+	assert (bo->exec != NULL);
+	bo->exec->relocs_ptr = (uintptr_t) stream->relocations;
+	bo->exec->relocation_count = stream->num_relocations;
+    }
+
+    intel_bo_destroy (&device->intel, bo);
+
+    i965_stream_reset (stream);
+}
+
+static void
+sf_states_pluck (void *entry, void *closure)
+{
+    i965_device_t *device = closure;
+
+    _cairo_hash_table_remove (device->sf_states, entry);
+    _cairo_freelist_free (&device->sf_freelist, entry);
+}
+
+static void
+cc_offsets_pluck (void *entry, void *closure)
+{
+    i965_device_t *device = closure;
+
+    _cairo_hash_table_remove (device->cc_states, entry);
+    _cairo_freelist_free (&device->cc_freelist, entry);
+}
+
+static void
+wm_kernels_pluck (void *entry, void *closure)
+{
+    i965_device_t *device = closure;
+
+    _cairo_hash_table_remove (device->wm_kernels, entry);
+    _cairo_freelist_free (&device->wm_kernel_freelist, entry);
+}
+
+static void
+wm_states_pluck (void *entry, void *closure)
+{
+    i965_device_t *device = closure;
+
+    _cairo_hash_table_remove (device->wm_states, entry);
+    _cairo_freelist_free (&device->wm_state_freelist, entry);
+}
+
+static void
+wm_bindings_pluck (void *entry, void *closure)
+{
+    i965_device_t *device = closure;
+
+    _cairo_hash_table_remove (device->wm_bindings, entry);
+    _cairo_freelist_free (&device->wm_binding_freelist, entry);
+}
+
+static void
+samplers_pluck (void *entry, void *closure)
+{
+    i965_device_t *device = closure;
+
+    _cairo_hash_table_remove (device->samplers, entry);
+    _cairo_freelist_free (&device->sampler_freelist, entry);
+}
+
+void
+i965_general_state_reset (i965_device_t *device)
+{
+    _cairo_hash_table_foreach (device->sf_states,
+			       sf_states_pluck,
+			       device);
+
+    _cairo_hash_table_foreach (device->cc_states,
+			       cc_offsets_pluck,
+			       device);
+
+    _cairo_hash_table_foreach (device->wm_kernels,
+			       wm_kernels_pluck,
+			       device);
+
+    _cairo_hash_table_foreach (device->wm_states,
+			       wm_states_pluck,
+			       device);
+
+    _cairo_hash_table_foreach (device->wm_bindings,
+			       wm_bindings_pluck,
+			       device);
+
+    _cairo_hash_table_foreach (device->samplers,
+			       samplers_pluck,
+			       device);
+
+    device->vs_offset = (uint32_t) -1;
+    device->border_color_offset = (uint32_t) -1;
+
+    if (device->general_state != NULL) {
+	intel_bo_destroy (&device->intel, device->general_state);
+	device->general_state = NULL;
+    }
+}
+
+static void
+i965_device_reset (i965_device_t *device)
+{
+    device->exec.count = 0;
+    device->exec.gtt_size = I965_VERTEX_SIZE +
+	                    I965_SURFACE_SIZE +
+			    I965_GENERAL_SIZE +
+			    I965_BATCH_SIZE;
+
+    device->sf_state.entry.hash = (uint32_t) -1;
+    device->wm_state.entry.hash = (uint32_t) -1;
+    device->wm_binding.entry.hash = (uint32_t) -1;
+    device->cc_state.entry.hash = (uint32_t) -1;
+
+    device->target = NULL;
+    device->source = NULL;
+    device->mask = NULL;
+    device->clip = NULL;
+
+    device->draw_rectangle = (uint32_t) -1;
+
+    device->vertex_type = (uint32_t) -1;
+    device->vertex_size = 0;
+    device->rectangle_size   = 0;
+    device->last_vertex_size = 0;
+
+    device->constants = NULL;
+    device->constants_size = 0;
+
+    device->have_urb_fences = FALSE;
+}
+
+static cairo_status_t
+i965_exec (i965_device_t *device, uint32_t offset)
+{
+    struct drm_i915_gem_execbuffer2 execbuf;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    int ret, i;
+
+    execbuf.buffers_ptr = (uintptr_t) device->exec.exec;
+    execbuf.buffer_count = device->exec.count;
+    execbuf.batch_start_offset = offset;
+    execbuf.batch_len = device->batch.used;
+    execbuf.DR1 = 0;
+    execbuf.DR4 = 0;
+    execbuf.num_cliprects = 0;
+    execbuf.cliprects_ptr = 0;
+    execbuf.flags = I915_GEM_3D_PIPELINE;
+    execbuf.rsvd1 = 0;
+    execbuf.rsvd2 = 0;
+
+#if 0
+    printf ("exec: offset=%d, length=%d, buffers=%d\n",
+	    offset, device->batch.used, device->exec.count);
+    intel_dump_batchbuffer ((uint32_t *) device->batch.data,
+			    device->batch.used,
+			    device->intel.base.chip_id);
+#endif
+
+    ret = 0;
+    do {
+	ret = ioctl (device->intel.base.fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf);
+    } while (ret != 0 && errno == EINTR);
+    if (unlikely (ret)) {
+	if (errno == ENOMEM)
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	else
+	    status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+	fprintf (stderr, "Batch submission failed: %d\n", errno);
+	fprintf (stderr, "   gtt size: %zd/%zd\n",
+		 device->exec.gtt_size, device->intel.gtt_avail_size);
+
+	fprintf (stderr, "   %d buffers:\n",
+		 device->exec.count);
+	for (i = 0; i < device->exec.count; i++) {
+	    fprintf (stderr, "     exec[%d] = %d\n",
+		     i, device->exec.bo[i]->base.size);
+	}
+
+	intel_dump_batchbuffer ((uint32_t *) device->batch.data,
+				device->batch.used,
+				device->intel.base.chip_id);
+    }
+
+    /* XXX any write target within the batch should now be in error */
+    for (i = 0; i < device->exec.count; i++) {
+	intel_bo_t *bo = device->exec.bo[i];
+	cairo_bool_t ret;
+
+	bo->offset = device->exec.exec[i].offset;
+	bo->exec = NULL;
+	bo->batch_read_domains = 0;
+	bo->batch_write_domain = 0;
+
+	if (bo->virtual)
+	    intel_bo_unmap (bo);
+	bo->cpu = FALSE;
+
+	if (bo->purgeable)
+	    ret = intel_bo_madvise (&device->intel, bo, I915_MADV_DONTNEED);
+	    /* ignore immediate notification of purging */
+
+	cairo_list_del (&bo->cache_list);
+	cairo_list_init (&bo->link);
+	intel_bo_destroy (&device->intel, bo);
+    }
+    cairo_list_init (&device->flush);
+
+    device->exec.count = 0;
+
+    return status;
+}
+
+static inline uint32_t
+next_bo_size (uint32_t v)
+{
+    v = (v + 8191) / 8192;
+
+    v--;
+    v |= v >> 1;
+    v |= v >> 2;
+    v |= v >> 4;
+    v |= v >> 8;
+    v |= v >> 16;
+    v++;
+
+    return v * 8192;
+}
+
+static void
+_copy_to_bo_and_apply_relocations (i965_device_t *device,
+				   intel_bo_t *bo,
+				   i965_stream_t *stream,
+				   uint32_t offset)
+{
+    int n;
+
+    intel_bo_write (&device->intel, bo,
+		    offset, stream->used,
+		    stream->data);
+
+    for (n = 0; n < stream->num_pending_relocations; n++) {
+	struct i965_pending_relocation *p = &stream->pending_relocations[n];
+
+	i965_emit_relocation (device, &device->batch, bo,
+			      p->delta + offset,
+			      p->read_domains,
+			      p->write_domain,
+			      p->offset);
+
+	if (bo->offset) {
+	    *(uint32_t *) (device->batch.data + p->offset) =
+		bo->offset + p->delta + offset;
+	}
+    }
+}
+
+cairo_status_t
+i965_device_flush (i965_device_t *device)
+{
+    cairo_status_t status;
+    uint32_t aligned, max;
+    intel_bo_t *bo;
+    int n;
+
+    if (device->batch.used == 0)
+	return CAIRO_STATUS_SUCCESS;
+
+    i965_flush_vertices (device);
+
+    OUT_BATCH (MI_BATCH_BUFFER_END);
+    /* Emit a padding dword if we aren't going to be quad-word aligned. */
+    if (device->batch.used & 4)
+	OUT_BATCH (MI_NOOP);
+
+#if 0
+    printf ("device flush: vertex=%d, constant=%d, surface=%d, general=%d, batch=%d\n",
+	    device->vertex.used,
+	    device->constant.used,
+	    device->surface.used,
+	    device->general.used,
+	    device->batch.used);
+#endif
+
+    /* can we pack the surface state into the tail of the general state? */
+    if (device->general.used == device->general.committed) {
+	if (device->general.used) {
+	    assert (device->general.num_pending_relocations == 1);
+	    assert (device->general_state != NULL);
+	    i965_emit_relocation (device, &device->batch,
+				  device->general_state,
+				  device->general.pending_relocations[0].delta,
+				  device->general.pending_relocations[0].read_domains,
+				  device->general.pending_relocations[0].write_domain,
+				  device->general.pending_relocations[0].offset);
+
+	    if (device->general_state->offset) {
+		*(uint32_t *) (device->batch.data +
+			       device->general.pending_relocations[0].offset) =
+		    device->general_state->offset +
+		    device->general.pending_relocations[0].delta;
+	    }
+	}
+    } else {
+	assert (device->general.num_pending_relocations == 1);
+	if (device->general_state != NULL) {
+	    intel_bo_destroy (&device->intel, device->general_state);
+	    device->general_state = NULL;
+	}
+
+	bo = intel_bo_create (&device->intel,
+			      device->general.used,
+			      device->general.used,
+			      FALSE, I915_TILING_NONE, 0);
+	if (unlikely (bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	aligned = (device->general.used + 31) & -32;
+	if (device->surface.used &&
+	    aligned + device->surface.used <= bo->base.size)
+	{
+	    _copy_to_bo_and_apply_relocations (device, bo, &device->general, 0);
+	    _copy_to_bo_and_apply_relocations (device, bo, &device->surface, aligned);
+
+	    if (device->surface.num_relocations) {
+		for (n = 0; n < device->surface.num_relocations; n++)
+		    device->surface.relocations[n].offset += aligned;
+
+		assert (bo->exec != NULL);
+		bo->exec->relocs_ptr = (uintptr_t) device->surface.relocations;
+		bo->exec->relocation_count = device->surface.num_relocations;
+	    }
+
+	    i965_stream_reset (&device->surface);
+	}
+	else
+	{
+	    _copy_to_bo_and_apply_relocations (device, bo, &device->general, 0);
+	}
+
+	/* Note we don't reset the general state, just mark what data we've committed. */
+	device->general.committed = device->general.used;
+	device->general_state = bo;
+    }
+    device->general.num_pending_relocations = 0;
+
+    /* Combine vertex+constant+surface+batch streams? */
+    max = aligned = device->vertex.used;
+    if (device->surface.used) {
+	aligned = (aligned + 63) & -64;
+	aligned += device->surface.used;
+	if (device->surface.used > max)
+	    max = device->surface.used;
+    }
+    aligned = (aligned + 63) & -64;
+    aligned += device->batch.used;
+    if (device->batch.used > max)
+	max = device->batch.used;
+    if (aligned <= next_bo_size (max)) {
+	int batch_num_relocations;
+
+	if (aligned <= 8192)
+	    max = aligned;
+
+	bo = intel_bo_create (&device->intel,
+			      max, max,
+			      FALSE, I915_TILING_NONE, 0);
+	if (unlikely (bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	assert (aligned <= bo->base.size);
+
+	if (device->vertex.used)
+	    _copy_to_bo_and_apply_relocations (device, bo, &device->vertex, 0);
+
+	aligned = device->vertex.used;
+
+	batch_num_relocations = device->batch.num_relocations;
+	if (device->surface.used) {
+	    aligned = (aligned + 63) & -64;
+	    _copy_to_bo_and_apply_relocations (device, bo, &device->surface, aligned);
+
+	    batch_num_relocations = device->batch.num_relocations;
+	    if (device->surface.num_relocations) {
+		assert (device->batch.num_relocations + device->surface.num_relocations < device->batch.max_relocations);
+
+		memcpy (device->batch.relocations + device->batch.num_relocations,
+			device->surface.relocations,
+			sizeof (device->surface.relocations[0]) * device->surface.num_relocations);
+
+		for (n = 0; n < device->surface.num_relocations; n++)
+		    device->batch.relocations[device->batch.num_relocations + n].offset += aligned;
+
+		device->batch.num_relocations += device->surface.num_relocations;
+	    }
+
+	    aligned += device->surface.used;
+	}
+
+	aligned = (aligned + 63) & -64;
+	intel_bo_write (&device->intel, bo,
+			aligned, device->batch.used,
+			device->batch.data);
+
+	for (n = 0; n < batch_num_relocations; n++)
+	    device->batch.relocations[n].offset += aligned;
+
+	if (device->exec.bo[device->exec.count-1] == bo) {
+	    assert (bo->exec == &device->exec.exec[device->exec.count-1]);
+
+	    bo->exec->relocation_count = device->batch.num_relocations;
+	    bo->exec->relocs_ptr = (uintptr_t) device->batch.relocations;
+	    intel_bo_destroy (&device->intel, bo);
+	} else {
+	    assert (bo->exec ==  NULL);
+
+	    n = device->exec.count++;
+	    device->exec.exec[n].handle = bo->base.handle;
+	    device->exec.exec[n].relocation_count = device->batch.num_relocations;
+	    device->exec.exec[n].relocs_ptr = (uintptr_t) device->batch.relocations;
+	    device->exec.exec[n].alignment = 0;
+	    device->exec.exec[n].offset = 0;
+	    device->exec.exec[n].flags = 0;
+	    device->exec.exec[n].rsvd1 = 0;
+	    device->exec.exec[n].rsvd2 = 0;
+
+	    /* transfer ownership to the exec */
+	    device->exec.bo[n] = bo;
+	}
+    } else {
+	i965_stream_commit (device, &device->vertex);
+	if (device->surface.used)
+	    i965_stream_commit (device, &device->surface);
+
+	bo = intel_bo_create (&device->intel,
+			      device->batch.used, device->batch.used,
+			      FALSE, I915_TILING_NONE, 0);
+	if (unlikely (bo == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	intel_bo_write (&device->intel, bo,
+			0, device->batch.used,
+			device->batch.data);
+
+	n = device->exec.count++;
+	device->exec.exec[n].handle = bo->base.handle;
+	device->exec.exec[n].relocation_count = device->batch.num_relocations;
+	device->exec.exec[n].relocs_ptr = (uintptr_t) device->batch.relocations;
+	device->exec.exec[n].alignment = 0;
+	device->exec.exec[n].offset = 0;
+	device->exec.exec[n].flags = 0;
+	device->exec.exec[n].rsvd1 = 0;
+	device->exec.exec[n].rsvd2 = 0;
+
+	/* transfer ownership to the exec */
+	device->exec.bo[n] = bo;
+	aligned = 0;
+    }
+
+    status = i965_exec (device, aligned);
+
+    i965_stream_reset (&device->vertex);
+    i965_stream_reset (&device->surface);
+    i965_stream_reset (&device->batch);
+
+    intel_glyph_cache_unpin (&device->intel);
+    intel_snapshot_cache_thaw (&device->intel);
+
+    i965_device_reset (device);
+
+    return status;
+}
+
+static cairo_surface_t *
+i965_surface_create_similar (void *abstract_other,
+			     cairo_content_t content,
+			     int width, int height)
+{
+    i965_surface_t *other;
+    cairo_format_t format;
+
+    if (width > 8192 || height > 8192)
+	return NULL;
+
+    other = abstract_other;
+    if (content == other->intel.drm.base.content)
+	format = other->intel.drm.format;
+    else
+	format = _cairo_format_from_content (content);
+
+    return i965_surface_create_internal ((cairo_drm_device_t *) other->intel.drm.base.device,
+					 format,
+					 width, height,
+					 I965_TILING_DEFAULT, TRUE);
+}
+
+static cairo_status_t
+i965_surface_finish (void *abstract_surface)
+{
+    i965_surface_t *surface = abstract_surface;
+
+    return intel_surface_finish (&surface->intel);
+}
+
+static cairo_status_t
+i965_surface_flush (void *abstract_surface, unsigned flags)
+{
+    i965_surface_t *surface = abstract_surface;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->intel.drm.fallback != NULL)
+	return intel_surface_flush (abstract_surface);
+
+    /* Forgo flushing on finish as the user cannot access the surface directly. */
+    if (! surface->intel.drm.base.finished &&
+	to_intel_bo (surface->intel.drm.bo)->exec != NULL)
+    {
+	status = cairo_device_acquire (surface->intel.drm.base.device);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    i965_device_t *device;
+
+	    device = i965_device (surface);
+	    status = i965_device_flush (device);
+	    cairo_device_release (&device->intel.base.base);
+	}
+    }
+
+    return status;
+}
+
+/* rasterisation */
+
+static cairo_status_t
+_composite_boxes_spans (void				*closure,
+			cairo_span_renderer_t		*renderer,
+			const cairo_rectangle_int_t	*extents)
+{
+    cairo_boxes_t *boxes = closure;
+    cairo_rectangular_scan_converter_t converter;
+    struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+
+    _cairo_rectangular_scan_converter_init (&converter, extents);
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	cairo_box_t *box = chunk->base;
+	int i;
+
+	for (i = 0; i < chunk->count; i++) {
+	    status = _cairo_rectangular_scan_converter_add_box (&converter, &box[i], 1);
+	    if (unlikely (status))
+		goto CLEANUP;
+	}
+    }
+
+    status = converter.base.generate (&converter.base, renderer);
+
+  CLEANUP:
+    converter.base.destroy (&converter.base);
+    return status;
+}
+
+cairo_status_t
+i965_fixup_unbounded (i965_surface_t *dst,
+		      const cairo_composite_rectangles_t *extents,
+		      cairo_clip_t *clip)
+{
+    i965_shader_t shader;
+    i965_device_t *device;
+    cairo_status_t status;
+
+    i965_shader_init (&shader, dst, CAIRO_OPERATOR_CLEAR);
+
+    if (clip != NULL) {
+	cairo_region_t *clip_region = NULL;
+
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || CAIRO_INT_STATUS_UNSUPPORTED);
+	assert (clip_region == NULL);
+
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    i965_shader_set_clip (&shader, clip);
+    } else {
+	if (extents->bounded.width  == extents->unbounded.width &&
+	    extents->bounded.height == extents->unbounded.height)
+	{
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    status = i965_shader_acquire_pattern (&shader,
+					  &shader.source,
+					  &_cairo_pattern_clear.base,
+					  &extents->unbounded);
+    if (unlikely (status)) {
+	i965_shader_fini (&shader);
+	return status;
+    }
+
+    device = i965_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	return status;
+
+    status = i965_shader_commit (&shader, device);
+    if (unlikely (status)) {
+	goto BAIL;
+    }
+
+    if (extents->bounded.width == 0 || extents->bounded.height == 0) {
+	i965_shader_add_rectangle (&shader,
+				   extents->unbounded.x,
+				   extents->unbounded.y,
+				   extents->unbounded.width,
+				   extents->unbounded.height);
+    } else { /* top */
+	if (extents->bounded.y != extents->unbounded.y) {
+	    cairo_rectangle_int_t rect;
+
+	    rect.x = extents->unbounded.x;
+	    rect.y = extents->unbounded.y;
+	    rect.width  = extents->unbounded.width;
+	    rect.height = extents->bounded.y - rect.y;
+
+	    i965_shader_add_rectangle (&shader,
+				       rect.x, rect.y,
+				       rect.width, rect.height);
+	}
+
+	/* left */
+	if (extents->bounded.x != extents->unbounded.x) {
+	    cairo_rectangle_int_t rect;
+
+	    rect.x = extents->unbounded.x;
+	    rect.y = extents->bounded.y;
+	    rect.width  = extents->bounded.x - extents->unbounded.x;
+	    rect.height = extents->bounded.height;
+
+	    i965_shader_add_rectangle (&shader,
+				       rect.x, rect.y,
+				       rect.width, rect.height);
+	}
+
+	/* right */
+	if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+	    cairo_rectangle_int_t rect;
+
+	    rect.x = extents->bounded.x + extents->bounded.width;
+	    rect.y = extents->bounded.y;
+	    rect.width  = extents->unbounded.x + extents->unbounded.width - rect.x;
+	    rect.height = extents->bounded.height;
+
+	    i965_shader_add_rectangle (&shader,
+				       rect.x, rect.y,
+				       rect.width, rect.height);
+	}
+
+	/* bottom */
+	if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+	    cairo_rectangle_int_t rect;
+
+	    rect.x = extents->unbounded.x;
+	    rect.y = extents->bounded.y + extents->bounded.height;
+	    rect.width  = extents->unbounded.width;
+	    rect.height = extents->unbounded.y + extents->unbounded.height - rect.y;
+
+	    i965_shader_add_rectangle (&shader,
+				       rect.x, rect.y,
+				       rect.width, rect.height);
+	}
+    }
+
+    i965_shader_fini (&shader);
+  BAIL:
+    cairo_device_release (&device->intel.base.base);
+    return status;
+}
+
+static cairo_status_t
+i965_fixup_unbounded_boxes (i965_surface_t *dst,
+			    const cairo_composite_rectangles_t *extents,
+			    cairo_clip_t *clip,
+			    cairo_boxes_t *boxes)
+{
+    cairo_boxes_t clear;
+    cairo_box_t box;
+    cairo_region_t *clip_region = NULL;
+    cairo_status_t status;
+    struct _cairo_boxes_chunk *chunk;
+    i965_shader_t shader;
+    int i;
+
+    if (boxes->num_boxes <= 1)
+	return i965_fixup_unbounded (dst, extents, clip);
+
+    i965_shader_init (&shader, dst, CAIRO_OPERATOR_CLEAR);
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || CAIRO_INT_STATUS_UNSUPPORTED);
+	if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+	    i965_shader_set_clip (&shader, clip);
+    }
+
+    status = i965_shader_acquire_pattern (&shader,
+					  &shader.source,
+					  &_cairo_pattern_clear.base,
+					  &extents->unbounded);
+    if (unlikely (status)) {
+	i965_shader_fini (&shader);
+	return status;
+    }
+
+    _cairo_boxes_init (&clear);
+
+    box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
+    box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
+    box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
+    box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);
+
+    if (clip_region == NULL) {
+	cairo_boxes_t tmp;
+
+	_cairo_boxes_init (&tmp);
+
+	status = _cairo_boxes_add (&tmp, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	tmp.chunks.next = &boxes->chunks;
+	tmp.num_boxes += boxes->num_boxes;
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&tmp,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+
+	tmp.chunks.next = NULL;
+    } else {
+	pixman_box32_t *pbox;
+
+	pbox = pixman_region32_rectangles (&clip_region->rgn, &i);
+	_cairo_boxes_limit (&clear, (cairo_box_t *) pbox, i);
+
+	status = _cairo_boxes_add (&clear, &box);
+	assert (status == CAIRO_STATUS_SUCCESS);
+
+	for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		status = _cairo_boxes_add (&clear, &chunk->base[i]);
+		if (unlikely (status)) {
+		    _cairo_boxes_fini (&clear);
+		    return status;
+		}
+	    }
+	}
+
+	status = _cairo_bentley_ottmann_tessellate_boxes (&clear,
+							  CAIRO_FILL_RULE_WINDING,
+							  &clear);
+    }
+
+    if (likely (status == CAIRO_STATUS_SUCCESS && clear.num_boxes)) {
+	i965_device_t *device;
+
+	device = i965_device (dst);
+	status = cairo_device_acquire (&device->intel.base.base);
+	if (unlikely (status))
+	    goto err_shader;
+
+	status = i965_shader_commit (&shader, device);
+	if (unlikely (status))
+	    goto err_device;
+
+	for (chunk = &clear.chunks; chunk != NULL; chunk = chunk->next) {
+	    for (i = 0; i < chunk->count; i++) {
+		int x1 = _cairo_fixed_integer_part (chunk->base[i].p1.x);
+		int y1 = _cairo_fixed_integer_part (chunk->base[i].p1.y);
+		int x2 = _cairo_fixed_integer_part (chunk->base[i].p2.x);
+		int y2 = _cairo_fixed_integer_part (chunk->base[i].p2.y);
+
+		i965_shader_add_rectangle (&shader, x1, y1, x2 - x1, y2 - y1);
+	    }
+	}
+
+err_device:
+	cairo_device_release (&device->intel.base.base);
+err_shader:
+	i965_shader_fini (&shader);
+    }
+
+    _cairo_boxes_fini (&clear);
+
+    return status;
+}
+
+static cairo_status_t
+_composite_boxes (i965_surface_t *dst,
+		  cairo_operator_t op,
+		  const cairo_pattern_t *pattern,
+		  cairo_boxes_t *boxes,
+		  cairo_antialias_t antialias,
+		  cairo_clip_t *clip,
+		  const cairo_composite_rectangles_t *extents)
+{
+    cairo_bool_t need_clip_surface = FALSE;
+    cairo_region_t *clip_region = NULL;
+    const struct _cairo_boxes_chunk *chunk;
+    cairo_status_t status;
+    i965_shader_t shader;
+    i965_device_t *device;
+    int i;
+
+    /* If the boxes are not pixel-aligned, we will need to compute a real mask */
+    if (antialias != CAIRO_ANTIALIAS_NONE) {
+	if (! boxes->is_pixel_aligned)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    i965_shader_init (&shader, dst, op);
+
+    status = i965_shader_acquire_pattern (&shader,
+					  &shader.source,
+					  pattern,
+					  &extents->bounded);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || CAIRO_INT_STATUS_UNSUPPORTED);
+	need_clip_surface = status == CAIRO_INT_STATUS_UNSUPPORTED;
+	if (need_clip_surface)
+	    i965_shader_set_clip (&shader, clip);
+    }
+
+    device = i965_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto err_shader;
+
+    status = i965_shader_commit (&shader, i965_device (dst));
+    if (unlikely (status))
+	goto err_device;
+
+    for (chunk = &boxes->chunks; chunk != NULL; chunk = chunk->next) {
+	cairo_box_t *box = chunk->base;
+	for (i = 0; i < chunk->count; i++) {
+	    int x1 = _cairo_fixed_integer_round (box[i].p1.x);
+	    int y1 = _cairo_fixed_integer_round (box[i].p1.y);
+	    int x2 = _cairo_fixed_integer_round (box[i].p2.x);
+	    int y2 = _cairo_fixed_integer_round (box[i].p2.y);
+
+	    if (x2 > x1 && y2 > y1)
+		i965_shader_add_rectangle (&shader, x1, y1, x2 - x1, y2 - y1);
+	}
+    }
+
+    if (! extents->is_bounded)
+	status = i965_fixup_unbounded_boxes (dst, extents, clip, boxes);
+
+  err_device:
+    cairo_device_release (&device->intel.base.base);
+  err_shader:
+    i965_shader_fini (&shader);
+
+    return status;
+}
+
+static cairo_status_t
+_clip_and_composite_boxes (i965_surface_t *dst,
+			   cairo_operator_t op,
+			   const cairo_pattern_t *src,
+			   cairo_boxes_t *boxes,
+			   cairo_antialias_t antialias,
+			   const cairo_composite_rectangles_t *extents,
+			   cairo_clip_t *clip)
+{
+    cairo_status_t status;
+
+    if (boxes->num_boxes == 0) {
+	if (extents->is_bounded)
+	    return CAIRO_STATUS_SUCCESS;
+
+	return i965_fixup_unbounded (dst, extents, clip);
+    }
+
+    /* Use a fast path if the boxes are pixel aligned */
+    status = _composite_boxes (dst, op, src, boxes, antialias, clip, extents);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	return status;
+
+    /* Otherwise render the boxes via an implicit mask and composite in the usual
+     * fashion.
+     */
+    return i965_clip_and_composite_spans (dst, op, src, antialias,
+					  _composite_boxes_spans, boxes,
+					  extents, clip);
+}
+
+static cairo_int_status_t
+i965_surface_paint (void			*abstract_dst,
+		    cairo_operator_t		 op,
+		    const cairo_pattern_t	*source,
+		    cairo_clip_t		*clip)
+{
+    i965_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    cairo_boxes_t boxes;
+    cairo_box_t *clip_boxes = boxes.boxes_embedded;
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    int num_boxes = ARRAY_LENGTH (boxes.boxes_embedded);
+    cairo_status_t status;
+
+    /* XXX unsupported operators? use pixel shader blending, eventually */
+
+    status = _cairo_composite_rectangles_init_for_paint (&extents,
+							 dst->intel.drm.width,
+							 dst->intel.drm.height,
+							 op, source,
+							 clip);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL && _cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	have_clip = TRUE;
+    }
+
+    status = _cairo_clip_to_boxes (&clip, &extents, &clip_boxes, &num_boxes);
+    if (unlikely (status)) {
+	if (have_clip)
+	    _cairo_clip_fini (&local_clip);
+
+	return status;
+    }
+
+    _cairo_boxes_init_for_array (&boxes, clip_boxes, num_boxes);
+    status = _clip_and_composite_boxes (dst, op, source,
+					&boxes, CAIRO_ANTIALIAS_DEFAULT,
+					&extents, clip);
+    if (clip_boxes != boxes.boxes_embedded)
+	free (clip_boxes);
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static cairo_int_status_t
+i965_surface_mask (void				*abstract_dst,
+		   cairo_operator_t		 op,
+		   const cairo_pattern_t	*source,
+		   const cairo_pattern_t	*mask,
+		   cairo_clip_t			*clip)
+{
+    i965_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    i965_shader_t shader;
+    i965_device_t *device;
+    cairo_clip_t local_clip;
+    cairo_region_t *clip_region = NULL;
+    cairo_bool_t need_clip_surface = FALSE;
+    cairo_bool_t have_clip = FALSE;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_mask (&extents,
+							dst->intel.drm.width,
+							dst->intel.drm.height,
+							op, source, mask, clip);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL && _cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL && extents.is_bounded) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	status = _cairo_clip_rectangle (clip, &extents.bounded);
+	if (unlikely (status)) {
+	    _cairo_clip_fini (&local_clip);
+	    return status;
+	}
+
+	have_clip = TRUE;
+    }
+
+    i965_shader_init (&shader, dst, op);
+
+    status = i965_shader_acquire_pattern (&shader,
+					  &shader.source,
+					  source,
+					  &extents.bounded);
+    if (unlikely (status))
+	goto err_shader;
+
+    status = i965_shader_acquire_pattern (&shader,
+					  &shader.mask,
+					  mask,
+					  &extents.bounded);
+    if (unlikely (status))
+	goto err_shader;
+
+    if (clip != NULL) {
+	status = _cairo_clip_get_region (clip, &clip_region);
+	assert (status == CAIRO_STATUS_SUCCESS || CAIRO_INT_STATUS_UNSUPPORTED);
+	need_clip_surface = status == CAIRO_INT_STATUS_UNSUPPORTED;
+	if (need_clip_surface)
+	    i965_shader_set_clip (&shader, clip);
+    }
+
+    device = i965_device (dst);
+    status = cairo_device_acquire (&device->intel.base.base);
+    if (unlikely (status))
+	goto err_shader;
+
+    status = i965_shader_commit (&shader, device);
+    if (unlikely (status))
+	goto err_device;
+
+    if (clip_region != NULL) {
+	unsigned int n, num_rectangles;
+
+	num_rectangles = cairo_region_num_rectangles (clip_region);
+	for (n = 0; n < num_rectangles; n++) {
+	    cairo_rectangle_int_t rect;
+
+	    cairo_region_get_rectangle (clip_region, n, &rect);
+
+	    i965_shader_add_rectangle (&shader,
+				       rect.x, rect.y,
+				       rect.width, rect.height);
+	}
+    } else {
+	i965_shader_add_rectangle (&shader,
+				   extents.bounded.x,
+				   extents.bounded.y,
+				   extents.bounded.width,
+				   extents.bounded.height);
+    }
+
+    if (! extents.is_bounded)
+	status = i965_fixup_unbounded (dst, &extents, clip);
+
+  err_device:
+    cairo_device_release (&device->intel.base.base);
+  err_shader:
+    i965_shader_fini (&shader);
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+typedef struct {
+    cairo_polygon_t		polygon;
+    cairo_fill_rule_t		 fill_rule;
+    cairo_antialias_t		 antialias;
+} composite_polygon_info_t;
+
+static cairo_status_t
+_composite_polygon_spans (void                          *closure,
+			  cairo_span_renderer_t		*renderer,
+			  const cairo_rectangle_int_t   *extents)
+{
+    composite_polygon_info_t *info = closure;
+    cairo_botor_scan_converter_t converter;
+    cairo_status_t status;
+    cairo_box_t box;
+
+    box.p1.x = _cairo_fixed_from_int (extents->x);
+    box.p1.y = _cairo_fixed_from_int (extents->y);
+    box.p2.x = _cairo_fixed_from_int (extents->x + extents->width);
+    box.p2.y = _cairo_fixed_from_int (extents->y + extents->height);
+
+    _cairo_botor_scan_converter_init (&converter, &box, info->fill_rule);
+
+    status = converter.base.add_polygon (&converter.base, &info->polygon);
+    if (likely (status == CAIRO_STATUS_SUCCESS))
+	status = converter.base.generate (&converter.base, renderer);
+
+    converter.base.destroy (&converter.base);
+
+    return status;
+}
+
+static cairo_int_status_t
+i965_surface_stroke (void			*abstract_dst,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_path_fixed_t		*path,
+		     const cairo_stroke_style_t	*stroke_style,
+		     const cairo_matrix_t	*ctm,
+		     const cairo_matrix_t	*ctm_inverse,
+		     double			 tolerance,
+		     cairo_antialias_t		 antialias,
+		     cairo_clip_t		*clip)
+{
+    i965_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    composite_polygon_info_t info;
+    cairo_box_t boxes_stack[32], *clip_boxes = boxes_stack;
+    int num_boxes = ARRAY_LENGTH (boxes_stack);
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  dst->intel.drm.width,
+							  dst->intel.drm.height,
+							  op, source,
+							  path, stroke_style, ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL && _cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	have_clip = TRUE;
+    }
+
+    status = _cairo_clip_to_boxes (&clip, &extents, &clip_boxes, &num_boxes);
+    if (unlikely (status)) {
+	if (have_clip)
+	    _cairo_clip_fini (&local_clip);
+
+	return status;
+    }
+
+    if (_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	_cairo_boxes_limit (&boxes, clip_boxes, num_boxes);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								stroke_style,
+								ctm,
+								&boxes);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = _clip_and_composite_boxes (dst, op, source,
+						&boxes, antialias,
+						&extents, clip);
+	}
+
+	_cairo_boxes_fini (&boxes);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    goto CLEANUP_BOXES;
+    }
+
+    _cairo_polygon_init (&info.polygon, clip_boxes, num_boxes);
+
+    status = _cairo_path_fixed_stroke_to_polygon (path,
+						  stroke_style,
+						  ctm, ctm_inverse,
+						  tolerance,
+						  &info.polygon);
+    if (unlikely (status))
+	goto CLEANUP_POLYGON;
+
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t rect;
+
+	_cairo_box_round_to_rectangle (&info.polygon.extents, &rect);
+	if (! _cairo_rectangle_intersect (&extents.bounded, &rect))
+	    goto CLEANUP_POLYGON;
+    }
+
+    if (info.polygon.num_edges == 0) {
+	if (! extents.is_bounded)
+	    status = i965_fixup_unbounded (dst, &extents, clip);
+    } else {
+	info.fill_rule = CAIRO_FILL_RULE_WINDING;
+	info.antialias = antialias;
+	status = i965_clip_and_composite_spans (dst, op, source, antialias,
+						_composite_polygon_spans, &info,
+						&extents, clip);
+    }
+
+CLEANUP_POLYGON:
+    _cairo_polygon_fini (&info.polygon);
+
+CLEANUP_BOXES:
+    if (clip_boxes != boxes_stack)
+	free (clip_boxes);
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static cairo_int_status_t
+i965_surface_fill (void			*abstract_dst,
+		   cairo_operator_t	 op,
+		   const cairo_pattern_t*source,
+		   cairo_path_fixed_t	*path,
+		   cairo_fill_rule_t	 fill_rule,
+		   double		 tolerance,
+		   cairo_antialias_t	 antialias,
+		   cairo_clip_t		*clip)
+{
+    i965_surface_t *dst = abstract_dst;
+    cairo_composite_rectangles_t extents;
+    composite_polygon_info_t info;
+    cairo_box_t boxes_stack[32], *clip_boxes = boxes_stack;
+    cairo_clip_t local_clip;
+    cairo_bool_t have_clip = FALSE;
+    int num_boxes = ARRAY_LENGTH (boxes_stack);
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_fill (&extents,
+							dst->intel.drm.width,
+							dst->intel.drm.height,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    if (clip != NULL && _cairo_clip_contains_extents (clip, &extents))
+	clip = NULL;
+
+    if (clip != NULL) {
+	clip = _cairo_clip_init_copy (&local_clip, clip);
+	have_clip = TRUE;
+    }
+
+    status = _cairo_clip_to_boxes (&clip, &extents, &clip_boxes, &num_boxes);
+    if (unlikely (status)) {
+	if (have_clip)
+	    _cairo_clip_fini (&local_clip);
+
+	return status;
+    }
+
+    assert (! _cairo_path_fixed_fill_is_empty (path));
+
+    if (_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	_cairo_boxes_init (&boxes);
+	_cairo_boxes_limit (&boxes, clip_boxes, num_boxes);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      &boxes);
+	if (likely (status == CAIRO_STATUS_SUCCESS)) {
+	    status = _clip_and_composite_boxes (dst, op, source,
+						&boxes, antialias,
+						&extents, clip);
+	}
+
+	_cairo_boxes_fini (&boxes);
+
+	if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+	    goto CLEANUP_BOXES;
+    }
+
+    _cairo_polygon_init (&info.polygon, clip_boxes, num_boxes);
+
+    status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &info.polygon);
+    if (unlikely (status))
+	goto CLEANUP_POLYGON;
+
+    if (extents.is_bounded) {
+	cairo_rectangle_int_t rect;
+
+	_cairo_box_round_to_rectangle (&info.polygon.extents, &rect);
+	if (! _cairo_rectangle_intersect (&extents.bounded, &rect))
+	    goto CLEANUP_POLYGON;
+    }
+
+    if (info.polygon.num_edges == 0) {
+	if (! extents.is_bounded)
+	    status = i965_fixup_unbounded (dst, &extents, clip);
+    } else {
+	info.fill_rule = fill_rule;
+	info.antialias = antialias;
+	status = i965_clip_and_composite_spans (dst, op, source, antialias,
+						_composite_polygon_spans, &info,
+						&extents, clip);
+    }
+
+CLEANUP_POLYGON:
+    _cairo_polygon_fini (&info.polygon);
+
+CLEANUP_BOXES:
+    if (clip_boxes != boxes_stack)
+	free (clip_boxes);
+
+    if (have_clip)
+	_cairo_clip_fini (&local_clip);
+
+    return status;
+}
+
+static const cairo_surface_backend_t i965_surface_backend = {
+    CAIRO_SURFACE_TYPE_DRM,
+    _cairo_default_context_create,
+
+    i965_surface_create_similar,
+    i965_surface_finish,
+
+    NULL,
+    intel_surface_acquire_source_image,
+    intel_surface_release_source_image,
+
+    NULL, NULL, NULL,
+    NULL, /* composite */
+    NULL, /* fill */
+    NULL, /* trapezoids */
+    NULL, /* span */
+    NULL, /* check-span */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_drm_surface_get_extents,
+    NULL, /* old-glyphs */
+    _cairo_drm_surface_get_font_options,
+
+    i965_surface_flush,
+    NULL, /* mark_dirty */
+    intel_scaled_font_fini,
+    intel_scaled_glyph_fini,
+
+    i965_surface_paint,
+    i965_surface_mask,
+    i965_surface_stroke,
+    i965_surface_fill,
+    i965_surface_glyphs,
+};
+
+static void
+i965_surface_init (i965_surface_t *surface,
+		   cairo_drm_device_t *device,
+	           cairo_format_t format,
+		   int width, int height)
+{
+    intel_surface_init (&surface->intel, &i965_surface_backend, device,
+			format, width, height);
+    surface->stream = 0;
+}
+
+static inline int cairo_const
+i965_tiling_stride (uint32_t tiling, int stride)
+{
+    if (tiling == I915_TILING_NONE)
+	return stride;
+
+    return (stride + 127) & -128;
+}
+
+static inline int cairo_const
+i965_tiling_height (uint32_t tiling, int height)
+{
+    switch (tiling) {
+    default:
+    case I915_TILING_NONE: return (height + 1) & -2;
+    case I915_TILING_X: return (height + 7) & -8;
+    case I915_TILING_Y: return (height + 31) & -32;
+    }
+}
+
+cairo_surface_t *
+i965_surface_create_internal (cairo_drm_device_t *base_dev,
+		              cairo_format_t format,
+			      int width, int height,
+			      uint32_t tiling,
+			      cairo_bool_t gpu_target)
+{
+    i965_surface_t *surface;
+    cairo_status_t status_ignored;
+
+    surface = _cairo_malloc (sizeof (i965_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    i965_surface_init (surface, base_dev, format, width, height);
+
+    if (width && height) {
+	uint32_t size, stride;
+	intel_bo_t *bo;
+
+	width = (width + 3) & -4;
+	stride = cairo_format_stride_for_width (surface->intel.drm.format, width);
+	stride = (stride + 63) & ~63;
+	stride = i965_tiling_stride (tiling, stride);
+	surface->intel.drm.stride = stride;
+
+	height = i965_tiling_height (tiling, height);
+	assert (height <= I965_MAX_SIZE);
+
+	size = stride * height;
+	bo = intel_bo_create (to_intel_device (&base_dev->base),
+			      size, size,
+			      gpu_target, tiling, stride);
+	if (bo == NULL) {
+	    status_ignored = _cairo_drm_surface_finish (&surface->intel.drm);
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+
+	bo->tiling = tiling;
+	bo->stride = stride;
+	surface->intel.drm.bo = &bo->base;
+
+	assert (bo->base.size >= (size_t) stride*height);
+    }
+
+    return &surface->intel.drm.base;
+}
+
+static cairo_surface_t *
+i965_surface_create (cairo_drm_device_t *device,
+		     cairo_format_t format, int width, int height)
+{
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    }
+
+    return i965_surface_create_internal (device, format, width, height,
+	                                 I965_TILING_DEFAULT, TRUE);
+}
+
+static cairo_surface_t *
+i965_surface_create_for_name (cairo_drm_device_t *base_dev,
+			      unsigned int name,
+			      cairo_format_t format,
+			      int width, int height, int stride)
+{
+    i965_device_t *device;
+    i965_surface_t *surface;
+    cairo_status_t status_ignored;
+    int min_stride;
+
+    min_stride = cairo_format_stride_for_width (format, (width + 3) & -4);
+    if (stride < min_stride || stride & 63)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+
+    if (format == CAIRO_FORMAT_A1)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    case CAIRO_FORMAT_INVALID:
+    default:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    }
+
+    surface = _cairo_malloc (sizeof (i965_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    i965_surface_init (surface, base_dev, format, width, height);
+
+    device = (i965_device_t *) base_dev;
+    surface->intel.drm.bo = &intel_bo_create_for_name (&device->intel, name)->base;
+    if (unlikely (surface->intel.drm.bo == NULL)) {
+	status_ignored = _cairo_drm_surface_finish (&surface->intel.drm);
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    surface->intel.drm.stride = stride;
+
+    return &surface->intel.drm.base;
+}
+
+static cairo_status_t
+i965_surface_enable_scan_out (void *abstract_surface)
+{
+    i965_surface_t *surface = abstract_surface;
+    intel_bo_t *bo;
+
+    if (unlikely (surface->intel.drm.bo == NULL))
+	return _cairo_error (CAIRO_STATUS_INVALID_SIZE);
+
+    bo = to_intel_bo (surface->intel.drm.bo);
+    if (bo->tiling != I915_TILING_X) {
+	i965_device_t *device = i965_device (surface);
+	cairo_surface_pattern_t pattern;
+	cairo_surface_t *clone;
+	cairo_status_t status;
+
+	clone = i965_surface_create_internal (&device->intel.base,
+					      surface->intel.drm.base.content,
+					      surface->intel.drm.width,
+					      surface->intel.drm.height,
+					      I915_TILING_X,
+					      TRUE);
+	if (unlikely (clone->status))
+	    return clone->status;
+
+	/* 2D blit? */
+	_cairo_pattern_init_for_surface (&pattern, &surface->intel.drm.base);
+	pattern.base.filter = CAIRO_FILTER_NEAREST;
+
+	status = _cairo_surface_paint (clone,
+				       CAIRO_OPERATOR_SOURCE,
+				       &pattern.base,
+				       NULL);
+
+	_cairo_pattern_fini (&pattern.base);
+
+	if (unlikely (status)) {
+	    cairo_surface_destroy (clone);
+	    return status;
+	}
+
+	/* swap buffer objects */
+	surface->intel.drm.bo = ((cairo_drm_surface_t *) clone)->bo;
+	((cairo_drm_surface_t *) clone)->bo = &bo->base;
+	bo = to_intel_bo (surface->intel.drm.bo);
+
+	cairo_surface_destroy (clone);
+    }
+
+    if (unlikely (bo->tiling == I915_TILING_Y))
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT); /* XXX */
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_i965_device_flush (cairo_drm_device_t *device)
+{
+    cairo_status_t status;
+
+    if (unlikely (device->base.finished))
+	return CAIRO_STATUS_SUCCESS;
+
+    status = cairo_device_acquire (&device->base);
+    if (likely (status == CAIRO_STATUS_SUCCESS))
+	status = i965_device_flush ((i965_device_t *) device);
+
+    cairo_device_release (&device->base);
+
+    return status;
+}
+
+static cairo_int_status_t
+_i965_device_throttle (cairo_drm_device_t *device)
+{
+    cairo_status_t status;
+
+    status = cairo_device_acquire (&device->base);
+    if (unlikely (status))
+	return status;
+
+    status = i965_device_flush ((i965_device_t *) device);
+    intel_throttle ((intel_device_t *) device);
+
+    cairo_device_release (&device->base);
+
+    return status;
+}
+
+static void
+_i965_device_destroy (void *base)
+{
+    i965_device_t *device = base;
+
+    i965_device_reset (device);
+    i965_general_state_reset (device);
+
+    _cairo_hash_table_destroy (device->sf_states);
+    _cairo_hash_table_destroy (device->samplers);
+    _cairo_hash_table_destroy (device->cc_states);
+    _cairo_hash_table_destroy (device->wm_kernels);
+    _cairo_hash_table_destroy (device->wm_states);
+    _cairo_hash_table_destroy (device->wm_bindings);
+
+    _cairo_freelist_fini (&device->sf_freelist);
+    _cairo_freelist_fini (&device->cc_freelist);
+    _cairo_freelist_fini (&device->wm_kernel_freelist);
+    _cairo_freelist_fini (&device->wm_state_freelist);
+    _cairo_freelist_fini (&device->wm_binding_freelist);
+    _cairo_freelist_fini (&device->sampler_freelist);
+
+    intel_device_fini (&device->intel);
+    free (device);
+}
+
+static cairo_bool_t
+hash_equal (const void *A, const void *B)
+{
+    const cairo_hash_entry_t *a = A, *b = B;
+    return a->hash == b->hash;
+}
+
+cairo_drm_device_t *
+_cairo_drm_i965_device_create (int fd, dev_t dev, int vendor_id, int chip_id)
+{
+    i965_device_t *device;
+    uint64_t gtt_size;
+    cairo_status_t status;
+
+    if (! intel_info (fd, &gtt_size))
+	return  NULL;
+
+    device = _cairo_malloc (sizeof (i965_device_t));
+    if (unlikely (device == NULL))
+	return (cairo_drm_device_t *) _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = intel_device_init (&device->intel, fd);
+    if (unlikely (status))
+	goto CLEANUP;
+
+    device->is_g4x = IS_G4X (chip_id);
+    //device->is_g5x = IS_G5X (chip_id);
+
+    device->intel.base.surface.create = i965_surface_create;
+    device->intel.base.surface.create_for_name = i965_surface_create_for_name;
+    device->intel.base.surface.create_from_cacheable_image = NULL;
+    device->intel.base.surface.enable_scan_out = i965_surface_enable_scan_out;
+
+    device->intel.base.device.flush = _i965_device_flush;
+    device->intel.base.device.throttle = _i965_device_throttle;
+    device->intel.base.device.destroy = _i965_device_destroy;
+
+    device->sf_states = _cairo_hash_table_create (i965_sf_state_equal);
+    if (unlikely (device->sf_states == NULL))
+	goto CLEANUP_INTEL;
+
+    _cairo_freelist_init (&device->sf_freelist,
+			  sizeof (struct i965_sf_state));
+
+
+    device->cc_states = _cairo_hash_table_create (i965_cc_state_equal);
+    if (unlikely (device->cc_states == NULL))
+	goto CLEANUP_SF;
+
+    _cairo_freelist_init (&device->cc_freelist,
+			  sizeof (struct i965_cc_state));
+
+
+    device->wm_kernels = _cairo_hash_table_create (hash_equal);
+    if (unlikely (device->wm_kernels == NULL))
+	goto CLEANUP_CC;
+
+    _cairo_freelist_init (&device->wm_kernel_freelist,
+			  sizeof (struct i965_wm_kernel));
+
+    device->wm_states = _cairo_hash_table_create (i965_wm_state_equal);
+    if (unlikely (device->wm_states == NULL))
+	goto CLEANUP_WM_KERNEL;
+
+    _cairo_freelist_init (&device->wm_state_freelist,
+			  sizeof (struct i965_wm_state));
+
+
+    device->wm_bindings = _cairo_hash_table_create (i965_wm_binding_equal);
+    if (unlikely (device->wm_bindings == NULL))
+	goto CLEANUP_WM_STATE;
+
+    _cairo_freelist_init (&device->wm_binding_freelist,
+			  sizeof (struct i965_wm_binding));
+
+    device->samplers = _cairo_hash_table_create (hash_equal);
+    if (unlikely (device->samplers == NULL))
+	goto CLEANUP_WM_BINDING;
+
+    _cairo_freelist_init (&device->sampler_freelist,
+			  sizeof (struct i965_sampler));
+
+    i965_stream_init (&device->batch,
+		      device->batch_base, sizeof (device->batch_base),
+		      NULL, 0,
+		      device->batch_relocations,
+		      ARRAY_LENGTH (device->batch_relocations));
+
+    i965_stream_init (&device->surface,
+		      device->surface_base, sizeof (device->surface_base),
+		      device->surface_pending_relocations,
+		      ARRAY_LENGTH (device->surface_pending_relocations),
+		      device->surface_relocations,
+		      ARRAY_LENGTH (device->surface_relocations));
+
+    i965_stream_init (&device->general,
+		      device->general_base, sizeof (device->general_base),
+		      device->general_pending_relocations,
+		      ARRAY_LENGTH (device->general_pending_relocations),
+		      NULL, 0);
+
+    i965_stream_init (&device->vertex,
+		      device->vertex_base, sizeof (device->vertex_base),
+		      device->vertex_pending_relocations,
+		      ARRAY_LENGTH (device->vertex_pending_relocations),
+		      NULL, 0);
+
+    cairo_list_init (&device->flush);
+    i965_device_reset (device);
+    device->vs_offset = (uint32_t) -1;
+    device->border_color_offset = (uint32_t) -1;
+    device->general_state = NULL;
+
+    return _cairo_drm_device_init (&device->intel.base,
+				   fd, dev, vendor_id, chip_id,
+				   I965_MAX_SIZE);
+
+  CLEANUP_WM_BINDING:
+    _cairo_hash_table_destroy (device->wm_bindings);
+  CLEANUP_WM_STATE:
+    _cairo_hash_table_destroy (device->wm_states);
+  CLEANUP_WM_KERNEL:
+    _cairo_hash_table_destroy (device->wm_kernels);
+  CLEANUP_CC:
+    _cairo_hash_table_destroy (device->cc_states);
+  CLEANUP_SF:
+    _cairo_hash_table_destroy (device->sf_states);
+  CLEANUP_INTEL:
+    intel_device_fini (&device->intel);
+  CLEANUP:
+    free (device);
+    return (cairo_drm_device_t *) _cairo_device_create_in_error (status);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-defines.h b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-defines.h
new file mode 100644
index 0000000..b2be36f
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-defines.h
@@ -0,0 +1,824 @@
+/**************************************************************************
+ *
+ * Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef CAIRO_DRM_INTEL_BRW_DEFINES_H
+#define CAIRO_DRM_INTEL_BRW_DEFINES_H
+
+/* 3D state: */
+#define _3DOP_3DSTATE_PIPELINED       0x0
+#define _3DOP_3DSTATE_NONPIPELINED    0x1
+#define _3DOP_3DCONTROL               0x2
+#define _3DOP_3DPRIMITIVE             0x3
+
+#define _3DSTATE_PIPELINED_POINTERS       0x00
+#define _3DSTATE_BINDING_TABLE_POINTERS   0x01
+#define _3DSTATE_VERTEX_BUFFERS           0x08
+#define _3DSTATE_VERTEX_ELEMENTS          0x09
+#define _3DSTATE_INDEX_BUFFER             0x0A
+#define _3DSTATE_VF_STATISTICS            0x0B
+#define _3DSTATE_DRAWING_RECTANGLE            0x00
+#define _3DSTATE_CONSTANT_COLOR               0x01
+#define _3DSTATE_SAMPLER_PALETTE_LOAD         0x02
+#define _3DSTATE_CHROMA_KEY                   0x04
+#define _3DSTATE_DEPTH_BUFFER                 0x05
+#define _3DSTATE_POLY_STIPPLE_OFFSET          0x06
+#define _3DSTATE_POLY_STIPPLE_PATTERN         0x07
+#define _3DSTATE_LINE_STIPPLE                 0x08
+#define _3DSTATE_GLOBAL_DEPTH_OFFSET_CLAMP    0x09
+#define _3DCONTROL    0x00
+#define _3DPRIMITIVE  0x00
+
+#define PIPE_CONTROL_NOWRITE          0x00
+#define PIPE_CONTROL_WRITEIMMEDIATE   0x01
+#define PIPE_CONTROL_WRITEDEPTH       0x02
+#define PIPE_CONTROL_WRITETIMESTAMP   0x03
+
+#define PIPE_CONTROL_GTTWRITE_PROCESS_LOCAL 0x00
+#define PIPE_CONTROL_GTTWRITE_GLOBAL        0x01
+
+#define BRW_3D(Pipeline,Opcode,Subopcode) ((3 << 29) | \
+					   ((Pipeline) << 27) | \
+					   ((Opcode) << 24) | \
+					   ((Subopcode) << 16))
+
+#define BRW_PIPE_CONTROL			BRW_3D(3, 2, 0)
+#define BRW_PIPE_CONTROL_NOWRITE       (0 << 14)
+#define BRW_PIPE_CONTROL_WRITE_QWORD   (1 << 14)
+#define BRW_PIPE_CONTROL_WRITE_DEPTH   (2 << 14)
+#define BRW_PIPE_CONTROL_WRITE_TIME    (3 << 14)
+#define BRW_PIPE_CONTROL_DEPTH_STALL   (1 << 13)
+#define BRW_PIPE_CONTROL_WC_FLUSH      (1 << 12)
+#define BRW_PIPE_CONTROL_IS_FLUSH      (1 << 11)
+#define BRW_PIPE_CONTROL_NOTIFY_ENABLE (1 << 8)
+#define BRW_PIPE_CONTROL_GLOBAL_GTT    (1 << 2)
+#define BRW_PIPE_CONTROL_LOCAL_PGTT    (0 << 2)
+
+#define _3DPRIM_POINTLIST         0x01
+#define _3DPRIM_LINELIST          0x02
+#define _3DPRIM_LINESTRIP         0x03
+#define _3DPRIM_TRILIST           0x04
+#define _3DPRIM_TRISTRIP          0x05
+#define _3DPRIM_TRIFAN            0x06
+#define _3DPRIM_QUADLIST          0x07
+#define _3DPRIM_QUADSTRIP         0x08
+#define _3DPRIM_LINELIST_ADJ      0x09
+#define _3DPRIM_LINESTRIP_ADJ     0x0A
+#define _3DPRIM_TRILIST_ADJ       0x0B
+#define _3DPRIM_TRISTRIP_ADJ      0x0C
+#define _3DPRIM_TRISTRIP_REVERSE  0x0D
+#define _3DPRIM_POLYGON           0x0E
+#define _3DPRIM_RECTLIST          0x0F
+#define _3DPRIM_LINELOOP          0x10
+#define _3DPRIM_POINTLIST_BF      0x11
+#define _3DPRIM_LINESTRIP_CONT    0x12
+#define _3DPRIM_LINESTRIP_BF      0x13
+#define _3DPRIM_LINESTRIP_CONT_BF 0x14
+#define _3DPRIM_TRIFAN_NOSTIPPLE  0x15
+
+#define _3DPRIM_VERTEXBUFFER_ACCESS_SEQUENTIAL 0
+#define _3DPRIM_VERTEXBUFFER_ACCESS_RANDOM     1
+
+#define BRW_ANISORATIO_2     0
+#define BRW_ANISORATIO_4     1
+#define BRW_ANISORATIO_6     2
+#define BRW_ANISORATIO_8     3
+#define BRW_ANISORATIO_10    4
+#define BRW_ANISORATIO_12    5
+#define BRW_ANISORATIO_14    6
+#define BRW_ANISORATIO_16    7
+
+#define BRW_BLENDFACTOR_ONE                 0x1
+#define BRW_BLENDFACTOR_SRC_COLOR           0x2
+#define BRW_BLENDFACTOR_SRC_ALPHA           0x3
+#define BRW_BLENDFACTOR_DST_ALPHA           0x4
+#define BRW_BLENDFACTOR_DST_COLOR           0x5
+#define BRW_BLENDFACTOR_SRC_ALPHA_SATURATE  0x6
+#define BRW_BLENDFACTOR_CONST_COLOR         0x7
+#define BRW_BLENDFACTOR_CONST_ALPHA         0x8
+#define BRW_BLENDFACTOR_SRC1_COLOR          0x9
+#define BRW_BLENDFACTOR_SRC1_ALPHA          0x0A
+#define BRW_BLENDFACTOR_ZERO                0x11
+#define BRW_BLENDFACTOR_INV_SRC_COLOR       0x12
+#define BRW_BLENDFACTOR_INV_SRC_ALPHA       0x13
+#define BRW_BLENDFACTOR_INV_DST_ALPHA       0x14
+#define BRW_BLENDFACTOR_INV_DST_COLOR       0x15
+#define BRW_BLENDFACTOR_INV_CONST_COLOR     0x17
+#define BRW_BLENDFACTOR_INV_CONST_ALPHA     0x18
+#define BRW_BLENDFACTOR_INV_SRC1_COLOR      0x19
+#define BRW_BLENDFACTOR_INV_SRC1_ALPHA      0x1A
+
+#define BRW_BLENDFUNCTION_ADD               0
+#define BRW_BLENDFUNCTION_SUBTRACT          1
+#define BRW_BLENDFUNCTION_REVERSE_SUBTRACT  2
+#define BRW_BLENDFUNCTION_MIN               3
+#define BRW_BLENDFUNCTION_MAX               4
+
+#define BRW_ALPHATEST_FORMAT_UNORM8         0
+#define BRW_ALPHATEST_FORMAT_FLOAT32        1
+
+#define BRW_CHROMAKEY_KILL_ON_ANY_MATCH  0
+#define BRW_CHROMAKEY_REPLACE_BLACK      1
+
+#define BRW_CLIP_API_OGL     0
+#define BRW_CLIP_API_DX      1
+
+#define BRW_CLIPMODE_NORMAL              0
+#define BRW_CLIPMODE_CLIP_ALL            1
+#define BRW_CLIPMODE_CLIP_NON_REJECTED   2
+#define BRW_CLIPMODE_REJECT_ALL          3
+#define BRW_CLIPMODE_ACCEPT_ALL          4
+
+#define BRW_CLIP_NDCSPACE     0
+#define BRW_CLIP_SCREENSPACE  1
+
+#define BRW_COMPAREFUNCTION_ALWAYS       0
+#define BRW_COMPAREFUNCTION_NEVER        1
+#define BRW_COMPAREFUNCTION_LESS         2
+#define BRW_COMPAREFUNCTION_EQUAL        3
+#define BRW_COMPAREFUNCTION_LEQUAL       4
+#define BRW_COMPAREFUNCTION_GREATER      5
+#define BRW_COMPAREFUNCTION_NOTEQUAL     6
+#define BRW_COMPAREFUNCTION_GEQUAL       7
+
+#define BRW_COVERAGE_PIXELS_HALF     0
+#define BRW_COVERAGE_PIXELS_1        1
+#define BRW_COVERAGE_PIXELS_2        2
+#define BRW_COVERAGE_PIXELS_4        3
+
+#define BRW_CULLMODE_BOTH        0
+#define BRW_CULLMODE_NONE        1
+#define BRW_CULLMODE_FRONT       2
+#define BRW_CULLMODE_BACK        3
+
+#define BRW_DEFAULTCOLOR_R8G8B8A8_UNORM      0
+#define BRW_DEFAULTCOLOR_R32G32B32A32_FLOAT  1
+
+#define BRW_DEPTHFORMAT_D32_FLOAT_S8X24_UINT     0
+#define BRW_DEPTHFORMAT_D32_FLOAT                1
+#define BRW_DEPTHFORMAT_D24_UNORM_S8_UINT        2
+#define BRW_DEPTHFORMAT_D16_UNORM                5
+
+#define BRW_FLOATING_POINT_IEEE_754        0
+#define BRW_FLOATING_POINT_NON_IEEE_754    1
+
+#define BRW_FRONTWINDING_CW      0
+#define BRW_FRONTWINDING_CCW     1
+
+#define BRW_INDEX_BYTE     0
+#define BRW_INDEX_WORD     1
+#define BRW_INDEX_DWORD    2
+
+#define BRW_LOGICOPFUNCTION_CLEAR            0
+#define BRW_LOGICOPFUNCTION_NOR              1
+#define BRW_LOGICOPFUNCTION_AND_INVERTED     2
+#define BRW_LOGICOPFUNCTION_COPY_INVERTED    3
+#define BRW_LOGICOPFUNCTION_AND_REVERSE      4
+#define BRW_LOGICOPFUNCTION_INVERT           5
+#define BRW_LOGICOPFUNCTION_XOR              6
+#define BRW_LOGICOPFUNCTION_NAND             7
+#define BRW_LOGICOPFUNCTION_AND              8
+#define BRW_LOGICOPFUNCTION_EQUIV            9
+#define BRW_LOGICOPFUNCTION_NOOP             10
+#define BRW_LOGICOPFUNCTION_OR_INVERTED      11
+#define BRW_LOGICOPFUNCTION_COPY             12
+#define BRW_LOGICOPFUNCTION_OR_REVERSE       13
+#define BRW_LOGICOPFUNCTION_OR               14
+#define BRW_LOGICOPFUNCTION_SET              15
+
+#define BRW_MAPFILTER_NEAREST        0x0
+#define BRW_MAPFILTER_LINEAR         0x1
+#define BRW_MAPFILTER_ANISOTROPIC    0x2
+
+#define BRW_MIPFILTER_NONE        0
+#define BRW_MIPFILTER_NEAREST     1
+#define BRW_MIPFILTER_LINEAR      3
+
+#define BRW_POLYGON_FRONT_FACING     0
+#define BRW_POLYGON_BACK_FACING      1
+
+#define BRW_PREFILTER_ALWAYS     0x0
+#define BRW_PREFILTER_NEVER      0x1
+#define BRW_PREFILTER_LESS       0x2
+#define BRW_PREFILTER_EQUAL      0x3
+#define BRW_PREFILTER_LEQUAL     0x4
+#define BRW_PREFILTER_GREATER    0x5
+#define BRW_PREFILTER_NOTEQUAL   0x6
+#define BRW_PREFILTER_GEQUAL     0x7
+
+#define BRW_PROVOKING_VERTEX_0    0
+#define BRW_PROVOKING_VERTEX_1    1
+#define BRW_PROVOKING_VERTEX_2    2
+
+#define BRW_RASTRULE_UPPER_LEFT  0
+#define BRW_RASTRULE_UPPER_RIGHT 1
+
+#define BRW_RENDERTARGET_CLAMPRANGE_UNORM    0
+#define BRW_RENDERTARGET_CLAMPRANGE_SNORM    1
+#define BRW_RENDERTARGET_CLAMPRANGE_FORMAT   2
+
+#define BRW_STENCILOP_KEEP               0
+#define BRW_STENCILOP_ZERO               1
+#define BRW_STENCILOP_REPLACE            2
+#define BRW_STENCILOP_INCRSAT            3
+#define BRW_STENCILOP_DECRSAT            4
+#define BRW_STENCILOP_INCR               5
+#define BRW_STENCILOP_DECR               6
+#define BRW_STENCILOP_INVERT             7
+
+#define BRW_SURFACE_MIPMAPLAYOUT_BELOW   0
+#define BRW_SURFACE_MIPMAPLAYOUT_RIGHT   1
+
+#define BRW_SURFACEFORMAT_R32G32B32A32_FLOAT             0x000 
+#define BRW_SURFACEFORMAT_R32G32B32A32_SINT              0x001 
+#define BRW_SURFACEFORMAT_R32G32B32A32_UINT              0x002 
+#define BRW_SURFACEFORMAT_R32G32B32A32_UNORM             0x003 
+#define BRW_SURFACEFORMAT_R32G32B32A32_SNORM             0x004 
+#define BRW_SURFACEFORMAT_R64G64_FLOAT                   0x005 
+#define BRW_SURFACEFORMAT_R32G32B32X32_FLOAT             0x006 
+#define BRW_SURFACEFORMAT_R32G32B32A32_SSCALED           0x007
+#define BRW_SURFACEFORMAT_R32G32B32A32_USCALED           0x008
+#define BRW_SURFACEFORMAT_R32G32B32_FLOAT                0x040 
+#define BRW_SURFACEFORMAT_R32G32B32_SINT                 0x041 
+#define BRW_SURFACEFORMAT_R32G32B32_UINT                 0x042 
+#define BRW_SURFACEFORMAT_R32G32B32_UNORM                0x043 
+#define BRW_SURFACEFORMAT_R32G32B32_SNORM                0x044 
+#define BRW_SURFACEFORMAT_R32G32B32_SSCALED              0x045 
+#define BRW_SURFACEFORMAT_R32G32B32_USCALED              0x046 
+#define BRW_SURFACEFORMAT_R16G16B16A16_UNORM             0x080 
+#define BRW_SURFACEFORMAT_R16G16B16A16_SNORM             0x081 
+#define BRW_SURFACEFORMAT_R16G16B16A16_SINT              0x082 
+#define BRW_SURFACEFORMAT_R16G16B16A16_UINT              0x083 
+#define BRW_SURFACEFORMAT_R16G16B16A16_FLOAT             0x084 
+#define BRW_SURFACEFORMAT_R32G32_FLOAT                   0x085 
+#define BRW_SURFACEFORMAT_R32G32_SINT                    0x086 
+#define BRW_SURFACEFORMAT_R32G32_UINT                    0x087 
+#define BRW_SURFACEFORMAT_R32_FLOAT_X8X24_TYPELESS       0x088 
+#define BRW_SURFACEFORMAT_X32_TYPELESS_G8X24_UINT        0x089 
+#define BRW_SURFACEFORMAT_L32A32_FLOAT                   0x08A 
+#define BRW_SURFACEFORMAT_R32G32_UNORM                   0x08B 
+#define BRW_SURFACEFORMAT_R32G32_SNORM                   0x08C 
+#define BRW_SURFACEFORMAT_R64_FLOAT                      0x08D 
+#define BRW_SURFACEFORMAT_R16G16B16X16_UNORM             0x08E 
+#define BRW_SURFACEFORMAT_R16G16B16X16_FLOAT             0x08F 
+#define BRW_SURFACEFORMAT_A32X32_FLOAT                   0x090 
+#define BRW_SURFACEFORMAT_L32X32_FLOAT                   0x091 
+#define BRW_SURFACEFORMAT_I32X32_FLOAT                   0x092 
+#define BRW_SURFACEFORMAT_R16G16B16A16_SSCALED           0x093
+#define BRW_SURFACEFORMAT_R16G16B16A16_USCALED           0x094
+#define BRW_SURFACEFORMAT_R32G32_SSCALED                 0x095
+#define BRW_SURFACEFORMAT_R32G32_USCALED                 0x096
+#define BRW_SURFACEFORMAT_B8G8R8A8_UNORM                 0x0C0 
+#define BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB            0x0C1 
+#define BRW_SURFACEFORMAT_R10G10B10A2_UNORM              0x0C2 
+#define BRW_SURFACEFORMAT_R10G10B10A2_UNORM_SRGB         0x0C3 
+#define BRW_SURFACEFORMAT_R10G10B10A2_UINT               0x0C4 
+#define BRW_SURFACEFORMAT_R10G10B10_SNORM_A2_UNORM       0x0C5 
+#define BRW_SURFACEFORMAT_R8G8B8A8_UNORM                 0x0C7 
+#define BRW_SURFACEFORMAT_R8G8B8A8_UNORM_SRGB            0x0C8 
+#define BRW_SURFACEFORMAT_R8G8B8A8_SNORM                 0x0C9 
+#define BRW_SURFACEFORMAT_R8G8B8A8_SINT                  0x0CA 
+#define BRW_SURFACEFORMAT_R8G8B8A8_UINT                  0x0CB 
+#define BRW_SURFACEFORMAT_R16G16_UNORM                   0x0CC 
+#define BRW_SURFACEFORMAT_R16G16_SNORM                   0x0CD 
+#define BRW_SURFACEFORMAT_R16G16_SINT                    0x0CE 
+#define BRW_SURFACEFORMAT_R16G16_UINT                    0x0CF 
+#define BRW_SURFACEFORMAT_R16G16_FLOAT                   0x0D0 
+#define BRW_SURFACEFORMAT_B10G10R10A2_UNORM              0x0D1 
+#define BRW_SURFACEFORMAT_B10G10R10A2_UNORM_SRGB         0x0D2 
+#define BRW_SURFACEFORMAT_R11G11B10_FLOAT                0x0D3 
+#define BRW_SURFACEFORMAT_R32_SINT                       0x0D6 
+#define BRW_SURFACEFORMAT_R32_UINT                       0x0D7 
+#define BRW_SURFACEFORMAT_R32_FLOAT                      0x0D8 
+#define BRW_SURFACEFORMAT_R24_UNORM_X8_TYPELESS          0x0D9 
+#define BRW_SURFACEFORMAT_X24_TYPELESS_G8_UINT           0x0DA 
+#define BRW_SURFACEFORMAT_L16A16_UNORM                   0x0DF 
+#define BRW_SURFACEFORMAT_I24X8_UNORM                    0x0E0 
+#define BRW_SURFACEFORMAT_L24X8_UNORM                    0x0E1 
+#define BRW_SURFACEFORMAT_A24X8_UNORM                    0x0E2 
+#define BRW_SURFACEFORMAT_I32_FLOAT                      0x0E3 
+#define BRW_SURFACEFORMAT_L32_FLOAT                      0x0E4 
+#define BRW_SURFACEFORMAT_A32_FLOAT                      0x0E5 
+#define BRW_SURFACEFORMAT_B8G8R8X8_UNORM                 0x0E9 
+#define BRW_SURFACEFORMAT_B8G8R8X8_UNORM_SRGB            0x0EA 
+#define BRW_SURFACEFORMAT_R8G8B8X8_UNORM                 0x0EB 
+#define BRW_SURFACEFORMAT_R8G8B8X8_UNORM_SRGB            0x0EC 
+#define BRW_SURFACEFORMAT_R9G9B9E5_SHAREDEXP             0x0ED 
+#define BRW_SURFACEFORMAT_B10G10R10X2_UNORM              0x0EE 
+#define BRW_SURFACEFORMAT_L16A16_FLOAT                   0x0F0 
+#define BRW_SURFACEFORMAT_R32_UNORM                      0x0F1 
+#define BRW_SURFACEFORMAT_R32_SNORM                      0x0F2 
+#define BRW_SURFACEFORMAT_R10G10B10X2_USCALED            0x0F3
+#define BRW_SURFACEFORMAT_R8G8B8A8_SSCALED               0x0F4
+#define BRW_SURFACEFORMAT_R8G8B8A8_USCALED               0x0F5
+#define BRW_SURFACEFORMAT_R16G16_SSCALED                 0x0F6
+#define BRW_SURFACEFORMAT_R16G16_USCALED                 0x0F7
+#define BRW_SURFACEFORMAT_R32_SSCALED                    0x0F8
+#define BRW_SURFACEFORMAT_R32_USCALED                    0x0F9
+#define BRW_SURFACEFORMAT_B5G6R5_UNORM                   0x100 
+#define BRW_SURFACEFORMAT_B5G6R5_UNORM_SRGB              0x101 
+#define BRW_SURFACEFORMAT_B5G5R5A1_UNORM                 0x102 
+#define BRW_SURFACEFORMAT_B5G5R5A1_UNORM_SRGB            0x103 
+#define BRW_SURFACEFORMAT_B4G4R4A4_UNORM                 0x104 
+#define BRW_SURFACEFORMAT_B4G4R4A4_UNORM_SRGB            0x105 
+#define BRW_SURFACEFORMAT_R8G8_UNORM                     0x106 
+#define BRW_SURFACEFORMAT_R8G8_SNORM                     0x107 
+#define BRW_SURFACEFORMAT_R8G8_SINT                      0x108 
+#define BRW_SURFACEFORMAT_R8G8_UINT                      0x109 
+#define BRW_SURFACEFORMAT_R16_UNORM                      0x10A 
+#define BRW_SURFACEFORMAT_R16_SNORM                      0x10B 
+#define BRW_SURFACEFORMAT_R16_SINT                       0x10C 
+#define BRW_SURFACEFORMAT_R16_UINT                       0x10D 
+#define BRW_SURFACEFORMAT_R16_FLOAT                      0x10E 
+#define BRW_SURFACEFORMAT_I16_UNORM                      0x111 
+#define BRW_SURFACEFORMAT_L16_UNORM                      0x112 
+#define BRW_SURFACEFORMAT_A16_UNORM                      0x113 
+#define BRW_SURFACEFORMAT_L8A8_UNORM                     0x114 
+#define BRW_SURFACEFORMAT_I16_FLOAT                      0x115
+#define BRW_SURFACEFORMAT_L16_FLOAT                      0x116
+#define BRW_SURFACEFORMAT_A16_FLOAT                      0x117 
+#define BRW_SURFACEFORMAT_R5G5_SNORM_B6_UNORM            0x119 
+#define BRW_SURFACEFORMAT_B5G5R5X1_UNORM                 0x11A 
+#define BRW_SURFACEFORMAT_B5G5R5X1_UNORM_SRGB            0x11B
+#define BRW_SURFACEFORMAT_R8G8_SSCALED                   0x11C
+#define BRW_SURFACEFORMAT_R8G8_USCALED                   0x11D
+#define BRW_SURFACEFORMAT_R16_SSCALED                    0x11E
+#define BRW_SURFACEFORMAT_R16_USCALED                    0x11F
+#define BRW_SURFACEFORMAT_R8_UNORM                       0x140 
+#define BRW_SURFACEFORMAT_R8_SNORM                       0x141 
+#define BRW_SURFACEFORMAT_R8_SINT                        0x142 
+#define BRW_SURFACEFORMAT_R8_UINT                        0x143 
+#define BRW_SURFACEFORMAT_A8_UNORM                       0x144 
+#define BRW_SURFACEFORMAT_I8_UNORM                       0x145 
+#define BRW_SURFACEFORMAT_L8_UNORM                       0x146 
+#define BRW_SURFACEFORMAT_P4A4_UNORM                     0x147 
+#define BRW_SURFACEFORMAT_A4P4_UNORM                     0x148
+#define BRW_SURFACEFORMAT_R8_SSCALED                     0x149
+#define BRW_SURFACEFORMAT_R8_USCALED                     0x14A
+#define BRW_SURFACEFORMAT_R1_UINT                        0x181 
+#define BRW_SURFACEFORMAT_YCRCB_NORMAL                   0x182 
+#define BRW_SURFACEFORMAT_YCRCB_SWAPUVY                  0x183 
+#define BRW_SURFACEFORMAT_BC1_UNORM                      0x186 
+#define BRW_SURFACEFORMAT_BC2_UNORM                      0x187 
+#define BRW_SURFACEFORMAT_BC3_UNORM                      0x188 
+#define BRW_SURFACEFORMAT_BC4_UNORM                      0x189 
+#define BRW_SURFACEFORMAT_BC5_UNORM                      0x18A 
+#define BRW_SURFACEFORMAT_BC1_UNORM_SRGB                 0x18B 
+#define BRW_SURFACEFORMAT_BC2_UNORM_SRGB                 0x18C 
+#define BRW_SURFACEFORMAT_BC3_UNORM_SRGB                 0x18D 
+#define BRW_SURFACEFORMAT_MONO8                          0x18E 
+#define BRW_SURFACEFORMAT_YCRCB_SWAPUV                   0x18F 
+#define BRW_SURFACEFORMAT_YCRCB_SWAPY                    0x190 
+#define BRW_SURFACEFORMAT_DXT1_RGB                       0x191 
+#define BRW_SURFACEFORMAT_FXT1                           0x192 
+#define BRW_SURFACEFORMAT_R8G8B8_UNORM                   0x193 
+#define BRW_SURFACEFORMAT_R8G8B8_SNORM                   0x194 
+#define BRW_SURFACEFORMAT_R8G8B8_SSCALED                 0x195 
+#define BRW_SURFACEFORMAT_R8G8B8_USCALED                 0x196 
+#define BRW_SURFACEFORMAT_R64G64B64A64_FLOAT             0x197 
+#define BRW_SURFACEFORMAT_R64G64B64_FLOAT                0x198 
+#define BRW_SURFACEFORMAT_BC4_SNORM                      0x199 
+#define BRW_SURFACEFORMAT_BC5_SNORM                      0x19A 
+#define BRW_SURFACEFORMAT_R16G16B16_UNORM                0x19C 
+#define BRW_SURFACEFORMAT_R16G16B16_SNORM                0x19D 
+#define BRW_SURFACEFORMAT_R16G16B16_SSCALED              0x19E 
+#define BRW_SURFACEFORMAT_R16G16B16_USCALED              0x19F
+
+#define BRW_SURFACERETURNFORMAT_FLOAT32  0
+#define BRW_SURFACERETURNFORMAT_S1       1
+
+#define BRW_SURFACE_1D      0
+#define BRW_SURFACE_2D      1
+#define BRW_SURFACE_3D      2
+#define BRW_SURFACE_CUBE    3
+#define BRW_SURFACE_BUFFER  4
+#define BRW_SURFACE_NULL    7
+
+#define BRW_BORDER_COLOR_MODE_DEFAULT	0
+#define BRW_BORDER_COLOR_MODE_LEGACY	1
+
+#define BRW_TEXCOORDMODE_WRAP            0
+#define BRW_TEXCOORDMODE_MIRROR          1
+#define BRW_TEXCOORDMODE_CLAMP           2
+#define BRW_TEXCOORDMODE_CUBE            3
+#define BRW_TEXCOORDMODE_CLAMP_BORDER    4
+#define BRW_TEXCOORDMODE_MIRROR_ONCE     5
+
+#define BRW_THREAD_PRIORITY_NORMAL   0
+#define BRW_THREAD_PRIORITY_HIGH     1
+
+#define BRW_TILEWALK_XMAJOR                 0
+#define BRW_TILEWALK_YMAJOR                 1
+
+#define BRW_VERTEX_SUBPIXEL_PRECISION_8BITS  0
+#define BRW_VERTEX_SUBPIXEL_PRECISION_4BITS  1
+
+#define BRW_VERTEXBUFFER_ACCESS_VERTEXDATA     0
+#define BRW_VERTEXBUFFER_ACCESS_INSTANCEDATA   1
+
+#define BRW_VFCOMPONENT_NOSTORE      0
+#define BRW_VFCOMPONENT_STORE_SRC    1
+#define BRW_VFCOMPONENT_STORE_0      2
+#define BRW_VFCOMPONENT_STORE_1_FLT  3
+#define BRW_VFCOMPONENT_STORE_1_INT  4
+#define BRW_VFCOMPONENT_STORE_VID    5
+#define BRW_VFCOMPONENT_STORE_IID    6
+#define BRW_VFCOMPONENT_STORE_PID    7
+
+
+
+/* Execution Unit (EU) defines */
+
+#define BRW_ALIGN_1   0
+#define BRW_ALIGN_16  1
+
+#define BRW_ADDRESS_DIRECT                        0
+#define BRW_ADDRESS_REGISTER_INDIRECT_REGISTER    1
+
+#define BRW_CHANNEL_X     0
+#define BRW_CHANNEL_Y     1
+#define BRW_CHANNEL_Z     2
+#define BRW_CHANNEL_W     3
+
+#define BRW_COMPRESSION_NONE          0
+#define BRW_COMPRESSION_2NDHALF       1
+#define BRW_COMPRESSION_COMPRESSED    2
+
+#define BRW_CONDITIONAL_NONE  0
+#define BRW_CONDITIONAL_Z     1
+#define BRW_CONDITIONAL_NZ    2
+#define BRW_CONDITIONAL_EQ    1	/* Z */
+#define BRW_CONDITIONAL_NEQ   2	/* NZ */
+#define BRW_CONDITIONAL_G     3
+#define BRW_CONDITIONAL_GE    4
+#define BRW_CONDITIONAL_L     5
+#define BRW_CONDITIONAL_LE    6
+#define BRW_CONDITIONAL_C     7
+#define BRW_CONDITIONAL_O     8
+
+#define BRW_DEBUG_NONE        0
+#define BRW_DEBUG_BREAKPOINT  1
+
+#define BRW_DEPENDENCY_NORMAL         0
+#define BRW_DEPENDENCY_NOTCLEARED     1
+#define BRW_DEPENDENCY_NOTCHECKED     2
+#define BRW_DEPENDENCY_DISABLE        3
+
+#define BRW_EXECUTE_1     0
+#define BRW_EXECUTE_2     1
+#define BRW_EXECUTE_4     2
+#define BRW_EXECUTE_8     3
+#define BRW_EXECUTE_16    4
+#define BRW_EXECUTE_32    5
+
+#define BRW_HORIZONTAL_STRIDE_0   0
+#define BRW_HORIZONTAL_STRIDE_1   1
+#define BRW_HORIZONTAL_STRIDE_2   2
+#define BRW_HORIZONTAL_STRIDE_4   3
+
+#define BRW_INSTRUCTION_NORMAL    0
+#define BRW_INSTRUCTION_SATURATE  1
+
+#define BRW_MASK_ENABLE   0
+#define BRW_MASK_DISABLE  1
+
+#define BRW_OPCODE_MOV        1
+#define BRW_OPCODE_SEL        2
+#define BRW_OPCODE_NOT        4
+#define BRW_OPCODE_AND        5
+#define BRW_OPCODE_OR         6
+#define BRW_OPCODE_XOR        7
+#define BRW_OPCODE_SHR        8
+#define BRW_OPCODE_SHL        9
+#define BRW_OPCODE_RSR        10
+#define BRW_OPCODE_RSL        11
+#define BRW_OPCODE_ASR        12
+#define BRW_OPCODE_CMP        16
+#define BRW_OPCODE_JMPI       32
+#define BRW_OPCODE_IF         34
+#define BRW_OPCODE_IFF        35
+#define BRW_OPCODE_ELSE       36
+#define BRW_OPCODE_ENDIF      37
+#define BRW_OPCODE_DO         38
+#define BRW_OPCODE_WHILE      39
+#define BRW_OPCODE_BREAK      40
+#define BRW_OPCODE_CONTINUE   41
+#define BRW_OPCODE_HALT       42
+#define BRW_OPCODE_MSAVE      44
+#define BRW_OPCODE_MRESTORE   45
+#define BRW_OPCODE_PUSH       46
+#define BRW_OPCODE_POP        47
+#define BRW_OPCODE_WAIT       48
+#define BRW_OPCODE_SEND       49
+#define BRW_OPCODE_ADD        64
+#define BRW_OPCODE_MUL        65
+#define BRW_OPCODE_AVG        66
+#define BRW_OPCODE_FRC        67
+#define BRW_OPCODE_RNDU       68
+#define BRW_OPCODE_RNDD       69
+#define BRW_OPCODE_RNDE       70
+#define BRW_OPCODE_RNDZ       71
+#define BRW_OPCODE_MAC        72
+#define BRW_OPCODE_MACH       73
+#define BRW_OPCODE_LZD        74
+#define BRW_OPCODE_SAD2       80
+#define BRW_OPCODE_SADA2      81
+#define BRW_OPCODE_DP4        84
+#define BRW_OPCODE_DPH        85
+#define BRW_OPCODE_DP3        86
+#define BRW_OPCODE_DP2        87
+#define BRW_OPCODE_DPA2       88
+#define BRW_OPCODE_LINE       89
+#define BRW_OPCODE_NOP        126
+
+#define BRW_PREDICATE_NONE             0
+#define BRW_PREDICATE_NORMAL           1
+#define BRW_PREDICATE_ALIGN1_ANYV             2
+#define BRW_PREDICATE_ALIGN1_ALLV             3
+#define BRW_PREDICATE_ALIGN1_ANY2H            4
+#define BRW_PREDICATE_ALIGN1_ALL2H            5
+#define BRW_PREDICATE_ALIGN1_ANY4H            6
+#define BRW_PREDICATE_ALIGN1_ALL4H            7
+#define BRW_PREDICATE_ALIGN1_ANY8H            8
+#define BRW_PREDICATE_ALIGN1_ALL8H            9
+#define BRW_PREDICATE_ALIGN1_ANY16H           10
+#define BRW_PREDICATE_ALIGN1_ALL16H           11
+#define BRW_PREDICATE_ALIGN16_REPLICATE_X     2
+#define BRW_PREDICATE_ALIGN16_REPLICATE_Y     3
+#define BRW_PREDICATE_ALIGN16_REPLICATE_Z     4
+#define BRW_PREDICATE_ALIGN16_REPLICATE_W     5
+#define BRW_PREDICATE_ALIGN16_ANY4H           6
+#define BRW_PREDICATE_ALIGN16_ALL4H           7
+
+#define BRW_ARCHITECTURE_REGISTER_FILE    0
+#define BRW_GENERAL_REGISTER_FILE         1
+#define BRW_MESSAGE_REGISTER_FILE         2
+#define BRW_IMMEDIATE_VALUE               3
+
+#define BRW_REGISTER_TYPE_UD  0
+#define BRW_REGISTER_TYPE_D   1
+#define BRW_REGISTER_TYPE_UW  2
+#define BRW_REGISTER_TYPE_W   3
+#define BRW_REGISTER_TYPE_UB  4
+#define BRW_REGISTER_TYPE_B   5
+#define BRW_REGISTER_TYPE_VF  5	/* packed float vector, immediates only? */
+#define BRW_REGISTER_TYPE_HF  6
+#define BRW_REGISTER_TYPE_V   6	/* packed int vector, immediates only, uword dest only */
+#define BRW_REGISTER_TYPE_F   7
+
+#define BRW_ARF_NULL                  0x00
+#define BRW_ARF_ADDRESS               0x10
+#define BRW_ARF_ACCUMULATOR           0x20   
+#define BRW_ARF_FLAG                  0x30
+#define BRW_ARF_MASK                  0x40
+#define BRW_ARF_MASK_STACK            0x50
+#define BRW_ARF_MASK_STACK_DEPTH      0x60
+#define BRW_ARF_STATE                 0x70
+#define BRW_ARF_CONTROL               0x80
+#define BRW_ARF_NOTIFICATION_COUNT    0x90
+#define BRW_ARF_IP                    0xA0
+
+#define BRW_AMASK   0
+#define BRW_IMASK   1
+#define BRW_LMASK   2
+#define BRW_CMASK   3
+
+
+
+#define BRW_THREAD_NORMAL     0
+#define BRW_THREAD_ATOMIC     1
+#define BRW_THREAD_SWITCH     2
+
+#define BRW_VERTICAL_STRIDE_0                 0
+#define BRW_VERTICAL_STRIDE_1                 1
+#define BRW_VERTICAL_STRIDE_2                 2
+#define BRW_VERTICAL_STRIDE_4                 3
+#define BRW_VERTICAL_STRIDE_8                 4
+#define BRW_VERTICAL_STRIDE_16                5
+#define BRW_VERTICAL_STRIDE_32                6
+#define BRW_VERTICAL_STRIDE_64                7
+#define BRW_VERTICAL_STRIDE_128               8
+#define BRW_VERTICAL_STRIDE_256               9
+#define BRW_VERTICAL_STRIDE_ONE_DIMENSIONAL   0xF
+
+#define BRW_WIDTH_1       0
+#define BRW_WIDTH_2       1
+#define BRW_WIDTH_4       2
+#define BRW_WIDTH_8       3
+#define BRW_WIDTH_16      4
+
+#define BRW_STATELESS_BUFFER_BOUNDARY_1K      0
+#define BRW_STATELESS_BUFFER_BOUNDARY_2K      1
+#define BRW_STATELESS_BUFFER_BOUNDARY_4K      2
+#define BRW_STATELESS_BUFFER_BOUNDARY_8K      3
+#define BRW_STATELESS_BUFFER_BOUNDARY_16K     4
+#define BRW_STATELESS_BUFFER_BOUNDARY_32K     5
+#define BRW_STATELESS_BUFFER_BOUNDARY_64K     6
+#define BRW_STATELESS_BUFFER_BOUNDARY_128K    7
+#define BRW_STATELESS_BUFFER_BOUNDARY_256K    8
+#define BRW_STATELESS_BUFFER_BOUNDARY_512K    9
+#define BRW_STATELESS_BUFFER_BOUNDARY_1M      10
+#define BRW_STATELESS_BUFFER_BOUNDARY_2M      11
+
+#define BRW_POLYGON_FACING_FRONT      0
+#define BRW_POLYGON_FACING_BACK       1
+
+#define BRW_MESSAGE_TARGET_NULL               0
+#define BRW_MESSAGE_TARGET_MATH               1
+#define BRW_MESSAGE_TARGET_SAMPLER            2
+#define BRW_MESSAGE_TARGET_GATEWAY            3
+#define BRW_MESSAGE_TARGET_DATAPORT_READ      4
+#define BRW_MESSAGE_TARGET_DATAPORT_WRITE     5
+#define BRW_MESSAGE_TARGET_URB                6
+#define BRW_MESSAGE_TARGET_THREAD_SPAWNER     7
+
+#define BRW_SAMPLER_RETURN_FORMAT_FLOAT32     0
+#define BRW_SAMPLER_RETURN_FORMAT_UINT32      2
+#define BRW_SAMPLER_RETURN_FORMAT_SINT32      3
+
+#define BRW_SAMPLER_MESSAGE_SIMD8_SAMPLE              0
+#define BRW_SAMPLER_MESSAGE_SIMD16_SAMPLE             0
+#define BRW_SAMPLER_MESSAGE_SIMD16_SAMPLE_BIAS        0
+#define BRW_SAMPLER_MESSAGE_SIMD8_KILLPIX             1
+#define BRW_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_LOD        1
+#define BRW_SAMPLER_MESSAGE_SIMD16_SAMPLE_LOD         1
+#define BRW_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_GRADIENTS  2
+#define BRW_SAMPLER_MESSAGE_SIMD8_SAMPLE_GRADIENTS    2
+#define BRW_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_COMPARE    0
+#define BRW_SAMPLER_MESSAGE_SIMD16_SAMPLE_COMPARE     2
+#define BRW_SAMPLER_MESSAGE_SIMD4X2_RESINFO           2
+#define BRW_SAMPLER_MESSAGE_SIMD8_RESINFO             2
+#define BRW_SAMPLER_MESSAGE_SIMD16_RESINFO            2
+#define BRW_SAMPLER_MESSAGE_SIMD4X2_LD                3
+#define BRW_SAMPLER_MESSAGE_SIMD8_LD                  3
+#define BRW_SAMPLER_MESSAGE_SIMD16_LD                 3
+
+#define BRW_DATAPORT_OWORD_BLOCK_1_OWORDLOW   0
+#define BRW_DATAPORT_OWORD_BLOCK_1_OWORDHIGH  1
+#define BRW_DATAPORT_OWORD_BLOCK_2_OWORDS     2
+#define BRW_DATAPORT_OWORD_BLOCK_4_OWORDS     3
+#define BRW_DATAPORT_OWORD_BLOCK_8_OWORDS     4
+
+#define BRW_DATAPORT_OWORD_DUAL_BLOCK_1OWORD     0
+#define BRW_DATAPORT_OWORD_DUAL_BLOCK_4OWORDS    2
+
+#define BRW_DATAPORT_DWORD_SCATTERED_BLOCK_8DWORDS   2
+#define BRW_DATAPORT_DWORD_SCATTERED_BLOCK_16DWORDS  3
+
+#define BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ          0
+#define BRW_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ     1
+#define BRW_DATAPORT_READ_MESSAGE_DWORD_BLOCK_READ          2
+#define BRW_DATAPORT_READ_MESSAGE_DWORD_SCATTERED_READ      3
+
+#define BRW_DATAPORT_READ_TARGET_DATA_CACHE      0
+#define BRW_DATAPORT_READ_TARGET_RENDER_CACHE    1
+#define BRW_DATAPORT_READ_TARGET_SAMPLER_CACHE   2
+
+#define BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE                0
+#define BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE_REPLICATED     1
+#define BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD8_DUAL_SOURCE_SUBSPAN01         2
+#define BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD8_DUAL_SOURCE_SUBSPAN23         3
+#define BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD8_SINGLE_SOURCE_SUBSPAN01       4
+
+#define BRW_DATAPORT_WRITE_MESSAGE_OWORD_BLOCK_WRITE                0
+#define BRW_DATAPORT_WRITE_MESSAGE_OWORD_DUAL_BLOCK_WRITE           1
+#define BRW_DATAPORT_WRITE_MESSAGE_DWORD_BLOCK_WRITE                2
+#define BRW_DATAPORT_WRITE_MESSAGE_DWORD_SCATTERED_WRITE            3
+#define BRW_DATAPORT_WRITE_MESSAGE_RENDER_TARGET_WRITE              4
+#define BRW_DATAPORT_WRITE_MESSAGE_STREAMED_VERTEX_BUFFER_WRITE     5
+#define BRW_DATAPORT_WRITE_MESSAGE_FLUSH_RENDER_CACHE               7
+
+#define BRW_MATH_FUNCTION_INV                              1
+#define BRW_MATH_FUNCTION_LOG                              2
+#define BRW_MATH_FUNCTION_EXP                              3
+#define BRW_MATH_FUNCTION_SQRT                             4
+#define BRW_MATH_FUNCTION_RSQ                              5
+#define BRW_MATH_FUNCTION_SIN                              6 /* was 7 */
+#define BRW_MATH_FUNCTION_COS                              7 /* was 8 */
+#define BRW_MATH_FUNCTION_SINCOS                           8 /* was 6 */
+#define BRW_MATH_FUNCTION_TAN                              9
+#define BRW_MATH_FUNCTION_POW                              10
+#define BRW_MATH_FUNCTION_INT_DIV_QUOTIENT_AND_REMAINDER   11
+#define BRW_MATH_FUNCTION_INT_DIV_QUOTIENT                 12
+#define BRW_MATH_FUNCTION_INT_DIV_REMAINDER                13
+
+#define BRW_MATH_INTEGER_UNSIGNED     0
+#define BRW_MATH_INTEGER_SIGNED       1
+
+#define BRW_MATH_PRECISION_FULL        0
+#define BRW_MATH_PRECISION_PARTIAL     1
+
+#define BRW_MATH_SATURATE_NONE         0
+#define BRW_MATH_SATURATE_SATURATE     1
+
+#define BRW_MATH_DATA_VECTOR  0
+#define BRW_MATH_DATA_SCALAR  1
+
+#define BRW_URB_OPCODE_WRITE  0
+
+#define BRW_URB_SWIZZLE_NONE          0
+#define BRW_URB_SWIZZLE_INTERLEAVE    1
+#define BRW_URB_SWIZZLE_TRANSPOSE     2
+
+#define BRW_SCRATCH_SPACE_SIZE_1K     0
+#define BRW_SCRATCH_SPACE_SIZE_2K     1
+#define BRW_SCRATCH_SPACE_SIZE_4K     2
+#define BRW_SCRATCH_SPACE_SIZE_8K     3
+#define BRW_SCRATCH_SPACE_SIZE_16K    4
+#define BRW_SCRATCH_SPACE_SIZE_32K    5
+#define BRW_SCRATCH_SPACE_SIZE_64K    6
+#define BRW_SCRATCH_SPACE_SIZE_128K   7
+#define BRW_SCRATCH_SPACE_SIZE_256K   8
+#define BRW_SCRATCH_SPACE_SIZE_512K   9
+#define BRW_SCRATCH_SPACE_SIZE_1M     10
+#define BRW_SCRATCH_SPACE_SIZE_2M     11
+
+
+
+
+#define CMD_URB_FENCE                 0x6000
+#define CMD_CONST_BUFFER_STATE        0x6001
+#define CMD_CONST_BUFFER              0x6002
+
+#define CMD_STATE_BASE_ADDRESS        0x6101
+#define CMD_STATE_INSN_POINTER        0x6102
+#define CMD_PIPELINE_SELECT           0x6104
+
+#define CMD_PIPELINED_STATE_POINTERS  0x7800
+#define CMD_BINDING_TABLE_PTRS        0x7801
+#define CMD_VERTEX_BUFFER             0x7808
+#define CMD_VERTEX_ELEMENT            0x7809
+#define CMD_INDEX_BUFFER              0x780a
+#define CMD_VF_STATISTICS             0x780b
+
+#define CMD_DRAW_RECT                 0x7900
+#define CMD_BLEND_CONSTANT_COLOR      0x7901
+#define CMD_CHROMA_KEY                0x7904
+#define CMD_DEPTH_BUFFER              0x7905
+#define CMD_POLY_STIPPLE_OFFSET       0x7906
+#define CMD_POLY_STIPPLE_PATTERN      0x7907
+#define CMD_LINE_STIPPLE_PATTERN      0x7908
+#define CMD_GLOBAL_DEPTH_OFFSET_CLAMP 0x7908
+
+#define CMD_PIPE_CONTROL              0x7a00
+
+#define CMD_3D_PRIM                   0x7b00
+
+#define CMD_MI_FLUSH                  0x0200
+
+
+/* Various values from the R0 vertex header:
+ */
+#define R02_PRIM_END    0x1
+#define R02_PRIM_START  0x2
+
+/* media pipeline */
+
+#define BRW_VFE_MODE_GENERIC		0x0
+#define BRW_VFE_MODE_VLD_MPEG2		0x1
+#define BRW_VFE_MODE_IS			0x2
+#define BRW_VFE_MODE_AVC_MC		0x4
+#define BRW_VFE_MODE_AVC_IT		0x7
+#define BRW_VFE_MODE_VC1_IT		0xB
+
+#define BRW_VFE_DEBUG_COUNTER_FREE	0
+#define BRW_VFE_DEBUG_COUNTER_FROZEN	1
+#define BRW_VFE_DEBUG_COUNTER_ONCE	2
+#define BRW_VFE_DEBUG_COUNTER_ALWAYS	3
+
+/* VLD_STATE */
+#define BRW_MPEG_TOP_FIELD		1
+#define BRW_MPEG_BOTTOM_FIELD		2
+#define BRW_MPEG_FRAME			3
+#define BRW_MPEG_QSCALE_LINEAR		0
+#define BRW_MPEG_QSCALE_NONLINEAR	1
+#define BRW_MPEG_ZIGZAG_SCAN		0
+#define BRW_MPEG_ALTER_VERTICAL_SCAN	1
+#define BRW_MPEG_I_PICTURE		1
+#define BRW_MPEG_P_PICTURE		2
+#define BRW_MPEG_B_PICTURE		3
+
+#endif
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu-emit.c b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu-emit.c
new file mode 100644
index 0000000..f27b238
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu-emit.c
@@ -0,0 +1,1089 @@
+/*
+   Copyright (C) Intel Corp.  2006.  All Rights Reserved.
+   Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+   develop this 3D driver.
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice (including the
+   next paragraph) shall be included in all copies or substantial
+   portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+   IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+   LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+   OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ **********************************************************************/
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-drm-intel-brw-eu.h"
+
+#include <string.h>
+
+/***********************************************************************
+ * Internal helper for constructing instructions
+ */
+
+static void guess_execution_size( struct brw_instruction *insn,
+				  struct brw_reg reg )
+{
+    if (reg.width == BRW_WIDTH_8 &&
+	insn->header.compression_control == BRW_COMPRESSION_COMPRESSED)
+	insn->header.execution_size = BRW_EXECUTE_16;
+    else
+	insn->header.execution_size = reg.width;	/* note - definitions are compatible */
+}
+
+
+void
+brw_instruction_set_destination (struct brw_instruction *insn,
+				 struct brw_reg dest)
+{
+    insn->bits1.da1.dest_reg_file = dest.file;
+    insn->bits1.da1.dest_reg_type = dest.type;
+    insn->bits1.da1.dest_address_mode = dest.address_mode;
+
+    if (dest.address_mode == BRW_ADDRESS_DIRECT) {
+	insn->bits1.da1.dest_reg_nr = dest.nr;
+
+	if (insn->header.access_mode == BRW_ALIGN_1) {
+	    insn->bits1.da1.dest_subreg_nr = dest.subnr;
+	    if (dest.hstride == BRW_HORIZONTAL_STRIDE_0)
+		dest.hstride = BRW_HORIZONTAL_STRIDE_1;
+	    insn->bits1.da1.dest_horiz_stride = dest.hstride;
+	} else {
+	    insn->bits1.da16.dest_subreg_nr = dest.subnr / 16;
+	    insn->bits1.da16.dest_writemask = dest.dw1.bits.writemask;
+	}
+    } else {
+	insn->bits1.ia1.dest_subreg_nr = dest.subnr;
+
+	/* These are different sizes in align1 vs align16:
+	*/
+	if (insn->header.access_mode == BRW_ALIGN_1) {
+	    insn->bits1.ia1.dest_indirect_offset = dest.dw1.bits.indirect_offset;
+	    if (dest.hstride == BRW_HORIZONTAL_STRIDE_0)
+		dest.hstride = BRW_HORIZONTAL_STRIDE_1;
+	    insn->bits1.ia1.dest_horiz_stride = dest.hstride;
+	} else {
+	    insn->bits1.ia16.dest_indirect_offset = dest.dw1.bits.indirect_offset;
+	}
+    }
+
+    /* NEW: Set the execution size based on dest.width and
+     * insn->compression_control:
+     */
+    guess_execution_size(insn, dest);
+}
+
+void
+brw_instruction_set_source0 (struct brw_instruction *insn,
+			     struct brw_reg reg)
+{
+    assert(reg.file != BRW_MESSAGE_REGISTER_FILE);
+
+    insn->bits1.da1.src0_reg_file = reg.file;
+    insn->bits1.da1.src0_reg_type = reg.type;
+    insn->bits2.da1.src0_abs = reg.abs;
+    insn->bits2.da1.src0_negate = reg.negate;
+    insn->bits2.da1.src0_address_mode = reg.address_mode;
+
+    if (reg.file == BRW_IMMEDIATE_VALUE) {
+	insn->bits3.ud = reg.dw1.ud;
+
+	/* Required to set some fields in src1 as well:
+	*/
+	insn->bits1.da1.src1_reg_file = 0; /* arf */
+	insn->bits1.da1.src1_reg_type = reg.type;
+    } else {
+	if (reg.address_mode == BRW_ADDRESS_DIRECT) {
+	    if (insn->header.access_mode == BRW_ALIGN_1) {
+		insn->bits2.da1.src0_subreg_nr = reg.subnr;
+		insn->bits2.da1.src0_reg_nr = reg.nr;
+	    } else {
+		insn->bits2.da16.src0_subreg_nr = reg.subnr / 16;
+		insn->bits2.da16.src0_reg_nr = reg.nr;
+	    }
+	} else {
+	    insn->bits2.ia1.src0_subreg_nr = reg.subnr;
+
+	    if (insn->header.access_mode == BRW_ALIGN_1) {
+		insn->bits2.ia1.src0_indirect_offset = reg.dw1.bits.indirect_offset;
+	    } else {
+		insn->bits2.ia16.src0_subreg_nr = reg.dw1.bits.indirect_offset;
+	    }
+	}
+
+	if (insn->header.access_mode == BRW_ALIGN_1) {
+	    if (reg.width == BRW_WIDTH_1 &&
+		insn->header.execution_size == BRW_EXECUTE_1) {
+		insn->bits2.da1.src0_horiz_stride = BRW_HORIZONTAL_STRIDE_0;
+		insn->bits2.da1.src0_width = BRW_WIDTH_1;
+		insn->bits2.da1.src0_vert_stride = BRW_VERTICAL_STRIDE_0;
+	    } else {
+		insn->bits2.da1.src0_horiz_stride = reg.hstride;
+		insn->bits2.da1.src0_width = reg.width;
+		insn->bits2.da1.src0_vert_stride = reg.vstride;
+	    }
+	} else {
+	    insn->bits2.da16.src0_swz_x = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_X);
+	    insn->bits2.da16.src0_swz_y = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_Y);
+	    insn->bits2.da16.src0_swz_z = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_Z);
+	    insn->bits2.da16.src0_swz_w = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_W);
+
+	    /* This is an oddity of the fact we're using the same
+	     * descriptions for registers in align_16 as align_1:
+	     */
+	    if (reg.vstride == BRW_VERTICAL_STRIDE_8)
+		insn->bits2.da16.src0_vert_stride = BRW_VERTICAL_STRIDE_4;
+	    else
+		insn->bits2.da16.src0_vert_stride = reg.vstride;
+	}
+    }
+}
+
+
+void brw_set_src1( struct brw_instruction *insn,
+		   struct brw_reg reg )
+{
+    assert(reg.file != BRW_MESSAGE_REGISTER_FILE);
+
+    insn->bits1.da1.src1_reg_file = reg.file;
+    insn->bits1.da1.src1_reg_type = reg.type;
+    insn->bits3.da1.src1_abs = reg.abs;
+    insn->bits3.da1.src1_negate = reg.negate;
+
+    /* Only src1 can be immediate in two-argument instructions.
+    */
+    assert(insn->bits1.da1.src0_reg_file != BRW_IMMEDIATE_VALUE);
+
+    if (reg.file == BRW_IMMEDIATE_VALUE) {
+	insn->bits3.ud = reg.dw1.ud;
+    }
+    else {
+	/* This is a hardware restriction, which may or may not be lifted
+	 * in the future:
+	 */
+	assert (reg.address_mode == BRW_ADDRESS_DIRECT);
+	//assert (reg.file == BRW_GENERAL_REGISTER_FILE);
+
+	if (insn->header.access_mode == BRW_ALIGN_1) {
+	    insn->bits3.da1.src1_subreg_nr = reg.subnr;
+	    insn->bits3.da1.src1_reg_nr = reg.nr;
+	}
+	else {
+	    insn->bits3.da16.src1_subreg_nr = reg.subnr / 16;
+	    insn->bits3.da16.src1_reg_nr = reg.nr;
+	}
+
+	if (insn->header.access_mode == BRW_ALIGN_1) {
+	    if (reg.width == BRW_WIDTH_1 &&
+		insn->header.execution_size == BRW_EXECUTE_1) {
+		insn->bits3.da1.src1_horiz_stride = BRW_HORIZONTAL_STRIDE_0;
+		insn->bits3.da1.src1_width = BRW_WIDTH_1;
+		insn->bits3.da1.src1_vert_stride = BRW_VERTICAL_STRIDE_0;
+	    }
+	    else {
+		insn->bits3.da1.src1_horiz_stride = reg.hstride;
+		insn->bits3.da1.src1_width = reg.width;
+		insn->bits3.da1.src1_vert_stride = reg.vstride;
+	    }
+	}
+	else {
+	    insn->bits3.da16.src1_swz_x = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_X);
+	    insn->bits3.da16.src1_swz_y = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_Y);
+	    insn->bits3.da16.src1_swz_z = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_Z);
+	    insn->bits3.da16.src1_swz_w = BRW_GET_SWZ(reg.dw1.bits.swizzle, BRW_CHANNEL_W);
+
+	    /* This is an oddity of the fact we're using the same
+	     * descriptions for registers in align_16 as align_1:
+	     */
+	    if (reg.vstride == BRW_VERTICAL_STRIDE_8)
+		insn->bits3.da16.src1_vert_stride = BRW_VERTICAL_STRIDE_4;
+	    else
+		insn->bits3.da16.src1_vert_stride = reg.vstride;
+	}
+    }
+}
+
+
+
+static void brw_set_math_message( struct brw_instruction *insn,
+				  uint32_t msg_length,
+				  uint32_t response_length,
+				  uint32_t function,
+				  uint32_t integer_type,
+				  int low_precision,
+				  int saturate,
+				  uint32_t dataType )
+{
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->bits3.math.function = function;
+    insn->bits3.math.int_type = integer_type;
+    insn->bits3.math.precision = low_precision;
+    insn->bits3.math.saturate = saturate;
+    insn->bits3.math.data_type = dataType;
+    insn->bits3.math.response_length = response_length;
+    insn->bits3.math.msg_length = msg_length;
+    insn->bits3.math.msg_target = BRW_MESSAGE_TARGET_MATH;
+    insn->bits3.math.end_of_thread = 0;
+}
+
+static void brw_set_urb_message( struct brw_instruction *insn,
+				 int allocate,
+				 int used,
+				 uint32_t msg_length,
+				 uint32_t response_length,
+				 int end_of_thread,
+				 int complete,
+				 uint32_t offset,
+				 uint32_t swizzle_control )
+{
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->bits3.urb.opcode = 0;	/* ? */
+    insn->bits3.urb.offset = offset;
+    insn->bits3.urb.swizzle_control = swizzle_control;
+    insn->bits3.urb.allocate = allocate;
+    insn->bits3.urb.used = used;	/* ? */
+    insn->bits3.urb.complete = complete;
+    insn->bits3.urb.response_length = response_length;
+    insn->bits3.urb.msg_length = msg_length;
+    insn->bits3.urb.msg_target = BRW_MESSAGE_TARGET_URB;
+    insn->bits3.urb.end_of_thread = end_of_thread;
+}
+
+void
+brw_instruction_set_dp_write_message (struct brw_instruction *insn,
+				      uint32_t binding_table_index,
+				      uint32_t msg_control,
+				      uint32_t msg_type,
+				      uint32_t msg_length,
+				      uint32_t pixel_scoreboard_clear,
+				      uint32_t response_length,
+				      uint32_t end_of_thread)
+{
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->bits3.dp_write.binding_table_index = binding_table_index;
+    insn->bits3.dp_write.msg_control = msg_control;
+    insn->bits3.dp_write.pixel_scoreboard_clear = pixel_scoreboard_clear;
+    insn->bits3.dp_write.msg_type = msg_type;
+    insn->bits3.dp_write.send_commit_msg = 0;
+    insn->bits3.dp_write.response_length = response_length;
+    insn->bits3.dp_write.msg_length = msg_length;
+    insn->bits3.dp_write.msg_target = BRW_MESSAGE_TARGET_DATAPORT_WRITE;
+    insn->bits3.urb.end_of_thread = end_of_thread;
+}
+
+static void brw_set_dp_read_message( struct brw_instruction *insn,
+				     uint32_t binding_table_index,
+				     uint32_t msg_control,
+				     uint32_t msg_type,
+				     uint32_t target_cache,
+				     uint32_t msg_length,
+				     uint32_t response_length,
+				     uint32_t end_of_thread )
+{
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->bits3.dp_read.binding_table_index = binding_table_index;
+    insn->bits3.dp_read.msg_control = msg_control;
+    insn->bits3.dp_read.msg_type = msg_type;
+    insn->bits3.dp_read.target_cache = target_cache;
+    insn->bits3.dp_read.response_length = response_length;
+    insn->bits3.dp_read.msg_length = msg_length;
+    insn->bits3.dp_read.msg_target = BRW_MESSAGE_TARGET_DATAPORT_READ;
+    insn->bits3.dp_read.end_of_thread = end_of_thread;
+}
+
+static void
+brw_set_sampler_message (struct brw_instruction *insn,
+			 cairo_bool_t is_g4x,
+			 uint32_t binding_table_index,
+			 uint32_t sampler,
+			 uint32_t msg_type,
+			 uint32_t response_length,
+			 uint32_t msg_length,
+			 cairo_bool_t eot)
+{
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    if (is_g4x) {
+	/* XXX presume the driver is sane! */
+	insn->bits3.sampler_g4x.binding_table_index = binding_table_index;
+	insn->bits3.sampler_g4x.sampler = sampler;
+	insn->bits3.sampler_g4x.msg_type = msg_type;
+	insn->bits3.sampler_g4x.response_length = response_length;
+	insn->bits3.sampler_g4x.msg_length = msg_length;
+	insn->bits3.sampler_g4x.end_of_thread = eot;
+	insn->bits3.sampler_g4x.msg_target = BRW_MESSAGE_TARGET_SAMPLER;
+    } else {
+	insn->bits3.sampler.binding_table_index = binding_table_index;
+	insn->bits3.sampler.sampler = sampler;
+	insn->bits3.sampler.msg_type = msg_type;
+	insn->bits3.sampler.return_format = BRW_SAMPLER_RETURN_FORMAT_FLOAT32;
+	insn->bits3.sampler.response_length = response_length;
+	insn->bits3.sampler.msg_length = msg_length;
+	insn->bits3.sampler.end_of_thread = eot;
+	insn->bits3.sampler.msg_target = BRW_MESSAGE_TARGET_SAMPLER;
+    }
+}
+
+struct brw_instruction *
+brw_next_instruction (struct brw_compile *p,
+		      uint32_t opcode)
+{
+    struct brw_instruction *insn;
+
+    assert(p->nr_insn + 1 < BRW_EU_MAX_INSN);
+
+    insn = &p->store[p->nr_insn++];
+    memcpy(insn, p->current, sizeof(*insn));
+
+    /* Reset this one-shot flag: */
+    if (p->current->header.destreg__conditonalmod) {
+	p->current->header.destreg__conditonalmod = 0;
+	p->current->header.predicate_control = BRW_PREDICATE_NORMAL;
+    }
+
+    insn->header.opcode = opcode;
+    return insn;
+}
+
+static struct brw_instruction *brw_alu1( struct brw_compile *p,
+					 uint32_t opcode,
+					 struct brw_reg dest,
+					 struct brw_reg src )
+{
+    struct brw_instruction *insn = brw_next_instruction(p, opcode);
+    brw_instruction_set_destination(insn, dest);
+    brw_instruction_set_source0(insn, src);
+    return insn;
+}
+
+static struct brw_instruction *brw_alu2(struct brw_compile *p,
+					uint32_t opcode,
+					struct brw_reg dest,
+					struct brw_reg src0,
+					struct brw_reg src1 )
+{
+    struct brw_instruction *insn = brw_next_instruction(p, opcode);
+    brw_instruction_set_destination(insn, dest);
+    brw_instruction_set_source0(insn, src0);
+    brw_set_src1(insn, src1);
+    return insn;
+}
+
+
+/***********************************************************************
+ * Convenience routines.
+ */
+#define ALU1(OP)					\
+    struct brw_instruction *brw_##OP(struct brw_compile *p,			\
+				     struct brw_reg dest,			\
+				     struct brw_reg src0)			\
+{							\
+    return brw_alu1(p, BRW_OPCODE_##OP, dest, src0);	\
+}
+
+#define ALU2(OP)					\
+    struct brw_instruction *brw_##OP(struct brw_compile *p,			\
+				     struct brw_reg dest,			\
+				     struct brw_reg src0,			\
+				     struct brw_reg src1)			\
+{							\
+    return brw_alu2(p, BRW_OPCODE_##OP, dest, src0, src1);	\
+}
+
+
+    ALU1(MOV)
+    ALU2(SEL)
+    ALU1(NOT)
+    ALU2(AND)
+    ALU2(OR)
+    ALU2(XOR)
+    ALU2(SHR)
+    ALU2(SHL)
+    ALU2(RSR)
+    ALU2(RSL)
+    ALU2(ASR)
+    ALU2(ADD)
+    ALU2(MUL)
+    ALU1(FRC)
+    ALU1(RNDD)
+    ALU1(RNDZ)
+    ALU2(MAC)
+    ALU2(MACH)
+    ALU1(LZD)
+    ALU2(DP4)
+    ALU2(DPH)
+    ALU2(DP3)
+    ALU2(DP2)
+ALU2(LINE)
+
+
+
+
+void brw_NOP(struct brw_compile *p)
+{
+    struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_NOP);
+    brw_instruction_set_destination(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
+    brw_instruction_set_source0(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
+    brw_set_src1(insn, brw_imm_ud(0x0));
+}
+
+
+
+
+
+/***********************************************************************
+ * Comparisons, if/else/endif
+ */
+
+struct brw_instruction *brw_JMPI(struct brw_compile *p,
+				 struct brw_reg dest,
+				 struct brw_reg src0,
+				 struct brw_reg src1)
+{
+    struct brw_instruction *insn = brw_alu2(p, BRW_OPCODE_JMPI, dest, src0, src1);
+
+    p->current->header.predicate_control = BRW_PREDICATE_NONE;
+
+    return insn;
+}
+
+/* EU takes the value from the flag register and pushes it onto some
+ * sort of a stack (presumably merging with any flag value already on
+ * the stack).  Within an if block, the flags at the top of the stack
+ * control execution on each channel of the unit, eg. on each of the
+ * 16 pixel values in our wm programs.
+ *
+ * When the matching 'else' instruction is reached (presumably by
+ * countdown of the instruction count patched in by our ELSE/ENDIF
+ * functions), the relevant flags are inverted.
+ *
+ * When the matching 'endif' instruction is reached, the flags are
+ * popped off.  If the stack is now empty, normal execution resumes.
+ *
+ * No attempt is made to deal with stack overflow (14 elements?).
+ */
+struct brw_instruction *brw_IF(struct brw_compile *p, uint32_t execute_size)
+{
+    struct brw_instruction *insn;
+
+    if (p->single_program_flow) {
+	assert(execute_size == BRW_EXECUTE_1);
+
+	insn = brw_next_instruction(p, BRW_OPCODE_ADD);
+	insn->header.predicate_inverse = 1;
+    } else {
+	insn = brw_next_instruction(p, BRW_OPCODE_IF);
+    }
+
+    /* Override the defaults for this instruction:
+    */
+    brw_instruction_set_destination (insn, brw_ip_reg ());
+    brw_instruction_set_source0 (insn, brw_ip_reg ());
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->header.execution_size = execute_size;
+    insn->header.compression_control = BRW_COMPRESSION_NONE;
+    insn->header.predicate_control = BRW_PREDICATE_NORMAL;
+    insn->header.mask_control = BRW_MASK_ENABLE;
+    if (!p->single_program_flow)
+	insn->header.thread_control = BRW_THREAD_SWITCH;
+
+    p->current->header.predicate_control = BRW_PREDICATE_NONE;
+
+    return insn;
+}
+
+
+struct brw_instruction *brw_ELSE(struct brw_compile *p,
+				 struct brw_instruction *if_insn)
+{
+    struct brw_instruction *insn;
+
+    if (p->single_program_flow) {
+	insn = brw_next_instruction(p, BRW_OPCODE_ADD);
+    } else {
+	insn = brw_next_instruction(p, BRW_OPCODE_ELSE);
+    }
+
+    brw_instruction_set_destination (insn, brw_ip_reg ());
+    brw_instruction_set_source0 (insn, brw_ip_reg ());
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->header.compression_control = BRW_COMPRESSION_NONE;
+    insn->header.execution_size = if_insn->header.execution_size;
+    insn->header.mask_control = BRW_MASK_ENABLE;
+    if (!p->single_program_flow)
+	insn->header.thread_control = BRW_THREAD_SWITCH;
+
+    /* Patch the if instruction to point at this instruction.
+    */
+    if (p->single_program_flow) {
+	assert(if_insn->header.opcode == BRW_OPCODE_ADD);
+
+	if_insn->bits3.ud = (insn - if_insn + 1) * 16;
+    } else {
+	assert(if_insn->header.opcode == BRW_OPCODE_IF);
+
+	if_insn->bits3.if_else.jump_count = insn - if_insn;
+	if_insn->bits3.if_else.pop_count = 1;
+	if_insn->bits3.if_else.pad0 = 0;
+    }
+
+    return insn;
+}
+
+void brw_ENDIF(struct brw_compile *p,
+	       struct brw_instruction *patch_insn)
+{
+    if (p->single_program_flow) {
+	/* In single program flow mode, there's no need to execute an ENDIF,
+	 * since we don't need to do any stack operations, and if we're executing
+	 * currently, we want to just continue executing.
+	 */
+	struct brw_instruction *next = &p->store[p->nr_insn];
+
+	assert(patch_insn->header.opcode == BRW_OPCODE_ADD);
+
+	patch_insn->bits3.ud = (next - patch_insn) * 16;
+    } else {
+	struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_ENDIF);
+
+	brw_instruction_set_destination(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
+	brw_instruction_set_source0(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
+	brw_set_src1 (insn, brw_imm_d (0));
+
+	insn->header.compression_control = BRW_COMPRESSION_NONE;
+	insn->header.execution_size = patch_insn->header.execution_size;
+	insn->header.mask_control = BRW_MASK_ENABLE;
+	insn->header.thread_control = BRW_THREAD_SWITCH;
+
+	assert(patch_insn->bits3.if_else.jump_count == 0);
+
+	/* Patch the if or else instructions to point at this or the next
+	 * instruction respectively.
+	 */
+	if (patch_insn->header.opcode == BRW_OPCODE_IF) {
+	    /* Automagically turn it into an IFF:
+	    */
+	    patch_insn->header.opcode = BRW_OPCODE_IFF;
+	    patch_insn->bits3.if_else.jump_count = insn - patch_insn + 1;
+	    patch_insn->bits3.if_else.pop_count = 0;
+	    patch_insn->bits3.if_else.pad0 = 0;
+	} else if (patch_insn->header.opcode == BRW_OPCODE_ELSE) {
+	    patch_insn->bits3.if_else.jump_count = insn - patch_insn + 1;
+	    patch_insn->bits3.if_else.pop_count = 1;
+	    patch_insn->bits3.if_else.pad0 = 0;
+	} else {
+	    assert(0);
+	}
+
+	/* Also pop item off the stack in the endif instruction:
+	*/
+	insn->bits3.if_else.jump_count = 0;
+	insn->bits3.if_else.pop_count = 1;
+	insn->bits3.if_else.pad0 = 0;
+    }
+}
+
+struct brw_instruction *brw_BREAK(struct brw_compile *p)
+{
+    struct brw_instruction *insn;
+    insn = brw_next_instruction(p, BRW_OPCODE_BREAK);
+    brw_instruction_set_destination(insn, brw_ip_reg());
+    brw_instruction_set_source0(insn, brw_ip_reg());
+    brw_set_src1(insn, brw_imm_d (0));
+    insn->header.compression_control = BRW_COMPRESSION_NONE;
+    insn->header.execution_size = BRW_EXECUTE_8;
+    /* insn->header.mask_control = BRW_MASK_DISABLE; */
+    insn->bits3.if_else.pad0 = 0;
+    return insn;
+}
+
+struct brw_instruction *brw_CONT(struct brw_compile *p)
+{
+    struct brw_instruction *insn;
+    insn = brw_next_instruction(p, BRW_OPCODE_CONTINUE);
+    brw_instruction_set_destination(insn, brw_ip_reg());
+    brw_instruction_set_source0(insn, brw_ip_reg());
+    brw_set_src1 (insn, brw_imm_d (0));
+    insn->header.compression_control = BRW_COMPRESSION_NONE;
+    insn->header.execution_size = BRW_EXECUTE_8;
+    /* insn->header.mask_control = BRW_MASK_DISABLE; */
+    insn->bits3.if_else.pad0 = 0;
+    return insn;
+}
+
+/* DO/WHILE loop:
+*/
+struct brw_instruction *brw_DO(struct brw_compile *p, uint32_t execute_size)
+{
+    if (p->single_program_flow) {
+	return &p->store[p->nr_insn];
+    } else {
+	struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_DO);
+
+	/* Override the defaults for this instruction:
+	*/
+	brw_instruction_set_destination(insn, brw_null_reg());
+	brw_instruction_set_source0(insn, brw_null_reg());
+	brw_set_src1(insn, brw_null_reg());
+
+	insn->header.compression_control = BRW_COMPRESSION_NONE;
+	insn->header.execution_size = execute_size;
+	insn->header.predicate_control = BRW_PREDICATE_NONE;
+	/* insn->header.mask_control = BRW_MASK_ENABLE; */
+	/* insn->header.mask_control = BRW_MASK_DISABLE; */
+
+	return insn;
+    }
+}
+
+
+
+struct brw_instruction *brw_WHILE(struct brw_compile *p,
+				  struct brw_instruction *do_insn)
+{
+    struct brw_instruction *insn;
+
+    if (p->single_program_flow)
+	insn = brw_next_instruction(p, BRW_OPCODE_ADD);
+    else
+	insn = brw_next_instruction(p, BRW_OPCODE_WHILE);
+
+    brw_instruction_set_destination(insn, brw_ip_reg());
+    brw_instruction_set_source0(insn, brw_ip_reg());
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->header.compression_control = BRW_COMPRESSION_NONE;
+
+    if (p->single_program_flow) {
+	insn->header.execution_size = BRW_EXECUTE_1;
+
+	insn->bits3.d = (do_insn - insn) * 16;
+    } else {
+	insn->header.execution_size = do_insn->header.execution_size;
+
+	assert(do_insn->header.opcode == BRW_OPCODE_DO);
+	insn->bits3.if_else.jump_count = do_insn - insn + 1;
+	insn->bits3.if_else.pop_count = 0;
+	insn->bits3.if_else.pad0 = 0;
+    }
+
+    /*    insn->header.mask_control = BRW_MASK_ENABLE; */
+
+    /* insn->header.mask_control = BRW_MASK_DISABLE; */
+    p->current->header.predicate_control = BRW_PREDICATE_NONE;
+    return insn;
+}
+
+
+/* FORWARD JUMPS:
+*/
+void brw_land_fwd_jump(struct brw_compile *p,
+		       struct brw_instruction *jmp_insn)
+{
+    struct brw_instruction *landing = &p->store[p->nr_insn];
+
+    assert(jmp_insn->header.opcode == BRW_OPCODE_JMPI);
+    assert(jmp_insn->bits1.da1.src1_reg_file = BRW_IMMEDIATE_VALUE);
+
+    jmp_insn->bits3.ud = (landing - jmp_insn) - 1;
+}
+
+
+
+/* To integrate with the above, it makes sense that the comparison
+ * instruction should populate the flag register.  It might be simpler
+ * just to use the flag reg for most WM tasks?
+ */
+void brw_CMP(struct brw_compile *p,
+	     struct brw_reg dest,
+	     uint32_t conditional,
+	     struct brw_reg src0,
+	     struct brw_reg src1)
+{
+    struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_CMP);
+
+    insn->header.destreg__conditonalmod = conditional;
+    brw_instruction_set_destination(insn, dest);
+    brw_instruction_set_source0(insn, src0);
+    brw_set_src1(insn, src1);
+
+    /*    guess_execution_size(insn, src0); */
+
+
+    /* Make it so that future instructions will use the computed flag
+     * value until brw_set_predicate_control_flag_value() is called
+     * again.
+     */
+    if (dest.file == BRW_ARCHITECTURE_REGISTER_FILE &&
+	dest.nr == 0) {
+	p->current->header.predicate_control = BRW_PREDICATE_NORMAL;
+	p->flag_value = 0xff;
+    }
+}
+
+
+
+/***********************************************************************
+ * Helpers for the various SEND message types:
+ */
+
+/* Invert 8 values
+*/
+void brw_math( struct brw_compile *p,
+	       struct brw_reg dest,
+	       uint32_t function,
+	       uint32_t saturate,
+	       uint32_t msg_reg_nr,
+	       struct brw_reg src,
+	       uint32_t data_type,
+	       uint32_t precision )
+{
+    struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+    uint32_t msg_length = (function == BRW_MATH_FUNCTION_POW) ? 2 : 1;
+    uint32_t response_length = (function == BRW_MATH_FUNCTION_SINCOS) ? 2 : 1;
+
+    /* Example code doesn't set predicate_control for send
+     * instructions.
+     */
+    insn->header.predicate_control = 0;
+    insn->header.destreg__conditonalmod = msg_reg_nr;
+
+    response_length = 1;
+
+    brw_instruction_set_destination(insn, dest);
+    brw_instruction_set_source0(insn, src);
+    brw_set_math_message(insn,
+			 msg_length, response_length,
+			 function,
+			 BRW_MATH_INTEGER_UNSIGNED,
+			 precision,
+			 saturate,
+			 data_type);
+}
+
+/* Use 2 send instructions to invert 16 elements
+*/
+void brw_math_16( struct brw_compile *p,
+		  struct brw_reg dest,
+		  uint32_t function,
+		  uint32_t saturate,
+		  uint32_t msg_reg_nr,
+		  struct brw_reg src,
+		  uint32_t precision )
+{
+    struct brw_instruction *insn;
+    uint32_t msg_length = (function == BRW_MATH_FUNCTION_POW) ? 2 : 1;
+    uint32_t response_length = (function == BRW_MATH_FUNCTION_SINCOS) ? 2 : 1;
+
+    /* First instruction:
+    */
+    brw_push_insn_state(p);
+    brw_set_predicate_control_flag_value(p, 0xff);
+    brw_set_compression_control(p, BRW_COMPRESSION_NONE);
+
+    insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+    insn->header.destreg__conditonalmod = msg_reg_nr;
+
+    brw_instruction_set_destination(insn, dest);
+    brw_instruction_set_source0(insn, src);
+    brw_set_math_message(insn,
+			 msg_length, response_length,
+			 function,
+			 BRW_MATH_INTEGER_UNSIGNED,
+			 precision,
+			 saturate,
+			 BRW_MATH_DATA_VECTOR);
+
+    /* Second instruction:
+    */
+    insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+    insn->header.compression_control = BRW_COMPRESSION_2NDHALF;
+    insn->header.destreg__conditonalmod = msg_reg_nr+1;
+
+    brw_instruction_set_destination(insn, offset(dest,1));
+    brw_instruction_set_source0(insn, src);
+    brw_set_math_message(insn,
+			 msg_length, response_length,
+			 function,
+			 BRW_MATH_INTEGER_UNSIGNED,
+			 precision,
+			 saturate,
+			 BRW_MATH_DATA_VECTOR);
+
+    brw_pop_insn_state(p);
+}
+
+
+
+
+void brw_dp_WRITE_16( struct brw_compile *p,
+		      struct brw_reg src,
+		      uint32_t msg_reg_nr,
+		      uint32_t scratch_offset )
+{
+    {
+	brw_push_insn_state(p);
+	brw_set_mask_control(p, BRW_MASK_DISABLE);
+	brw_set_compression_control(p, BRW_COMPRESSION_NONE);
+
+	brw_MOV (p,
+		retype (brw_vec1_grf (0, 2), BRW_REGISTER_TYPE_D),
+		brw_imm_d (scratch_offset));
+
+	brw_pop_insn_state(p);
+    }
+
+    {
+	uint32_t msg_length = 3;
+	struct brw_reg dest = retype(brw_null_reg(), BRW_REGISTER_TYPE_UW);
+	struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+
+	insn->header.predicate_control = 0; /* XXX */
+	insn->header.compression_control = BRW_COMPRESSION_NONE;
+	insn->header.destreg__conditonalmod = msg_reg_nr;
+
+	brw_instruction_set_destination(insn, dest);
+	brw_instruction_set_source0(insn, src);
+
+	brw_instruction_set_dp_write_message(insn,
+					     255, /* bti */
+					     BRW_DATAPORT_OWORD_BLOCK_4_OWORDS, /* msg_control */
+					     BRW_DATAPORT_WRITE_MESSAGE_OWORD_BLOCK_WRITE, /* msg_type */
+					     msg_length,
+					     0, /* pixel scoreboard */
+					     0, /* response_length */
+					     0); /* eot */
+    }
+
+}
+
+
+void brw_dp_READ_16( struct brw_compile *p,
+		     struct brw_reg dest,
+		     uint32_t msg_reg_nr,
+		     uint32_t scratch_offset )
+{
+    {
+	brw_push_insn_state(p);
+	brw_set_compression_control(p, BRW_COMPRESSION_NONE);
+	brw_set_mask_control(p, BRW_MASK_DISABLE);
+
+	brw_MOV (p,
+		retype (brw_vec1_grf (0, 2), BRW_REGISTER_TYPE_D),
+		brw_imm_d (scratch_offset));
+
+	brw_pop_insn_state(p);
+    }
+
+    {
+	struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+
+	insn->header.predicate_control = 0; /* XXX */
+	insn->header.compression_control = BRW_COMPRESSION_NONE;
+	insn->header.destreg__conditonalmod = msg_reg_nr;
+
+	brw_instruction_set_destination(insn, dest);	/* UW? */
+	brw_instruction_set_source0(insn, retype(brw_vec8_grf(0), BRW_REGISTER_TYPE_UW));
+
+	brw_set_dp_read_message(insn,
+				255, /* bti */
+				3,  /* msg_control */
+				BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ, /* msg_type */
+				1, /* target cache */
+				1, /* msg_length */
+				2, /* response_length */
+				0); /* eot */
+    }
+}
+
+
+void brw_fb_WRITE(struct brw_compile *p,
+		  struct brw_reg dest,
+		  uint32_t msg_reg_nr,
+		  struct brw_reg src0,
+		  uint32_t binding_table_index,
+		  uint32_t msg_length,
+		  uint32_t response_length,
+		  int eot)
+{
+    struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+
+    insn->header.predicate_control = 0; /* XXX */
+    insn->header.compression_control = BRW_COMPRESSION_NONE;
+    insn->header.destreg__conditonalmod = msg_reg_nr;
+
+    brw_instruction_set_destination(insn, dest);
+    brw_instruction_set_source0(insn, src0);
+    brw_instruction_set_dp_write_message(insn,
+					 binding_table_index,
+					 BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE, /* msg_control */
+					 BRW_DATAPORT_WRITE_MESSAGE_RENDER_TARGET_WRITE, /* msg_type */
+					 msg_length,
+					 1,	/* pixel scoreboard */
+					 response_length,
+					 eot);
+}
+
+
+
+void brw_SAMPLE (struct brw_compile *p,
+		 struct brw_reg dest,
+		 uint32_t msg_reg_nr,
+		 struct brw_reg src0,
+		 uint32_t binding_table_index,
+		 uint32_t sampler,
+		 uint32_t writemask,
+		 uint32_t msg_type,
+		 uint32_t response_length,
+		 uint32_t msg_length,
+		 cairo_bool_t eot)
+{
+    int need_stall = 0;
+
+    if(writemask == 0) {
+	/*       printf("%s: zero writemask??\n", __FUNCTION__); */
+	return;
+    }
+
+    /* Hardware doesn't do destination dependency checking on send
+     * instructions properly.  Add a workaround which generates the
+     * dependency by other means.  In practice it seems like this bug
+     * only crops up for texture samples, and only where registers are
+     * written by the send and then written again later without being
+     * read in between.  Luckily for us, we already track that
+     * information and use it to modify the writemask for the
+     * instruction, so that is a guide for whether a workaround is
+     * needed.
+     */
+    if (writemask != WRITEMASK_XYZW) {
+	uint32_t dst_offset = 0;
+	uint32_t i, newmask = 0, len = 0;
+
+	for (i = 0; i < 4; i++) {
+	    if (writemask & (1<<i))
+		break;
+	    dst_offset += 2;
+	}
+	for (; i < 4; i++) {
+	    if (!(writemask & (1<<i)))
+		break;
+	    newmask |= 1<<i;
+	    len++;
+	}
+
+	if (newmask != writemask) {
+	    need_stall = 1;
+	    /*	 printf("need stall %x %x\n", newmask , writemask); */
+	}
+	else {
+	    struct brw_reg m1 = brw_message_reg(msg_reg_nr);
+
+	    newmask = ~newmask & WRITEMASK_XYZW;
+
+	    brw_push_insn_state(p);
+
+	    brw_set_compression_control(p, BRW_COMPRESSION_NONE);
+	    brw_set_mask_control(p, BRW_MASK_DISABLE);
+
+	    brw_MOV(p, m1, brw_vec8_grf(0));
+	    brw_MOV(p, get_element_ud(m1, 2), brw_imm_ud(newmask << 12));
+
+	    brw_pop_insn_state(p);
+
+	    src0 = retype(brw_null_reg(), BRW_REGISTER_TYPE_UW);
+	    dest = offset(dest, dst_offset);
+	    response_length = len * 2;
+	}
+    }
+
+    {
+	struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+
+	insn->header.predicate_control = 0; /* XXX */
+	insn->header.compression_control = BRW_COMPRESSION_NONE;
+	insn->header.destreg__conditonalmod = msg_reg_nr;
+
+	brw_instruction_set_destination(insn, dest);
+	brw_instruction_set_source0(insn, src0);
+	brw_set_sampler_message (insn, p->is_g4x,
+				 binding_table_index,
+				 sampler,
+				 msg_type,
+				 response_length,
+				 msg_length,
+				 eot);
+    }
+
+    if (need_stall)
+    {
+	struct brw_reg reg = vec8(offset(dest, response_length-1));
+
+	/*  mov (8) r9.0<1>:f    r9.0<8;8,1>:f    { Align1 }
+	*/
+	brw_push_insn_state(p);
+	brw_set_compression_control(p, 0);
+	brw_MOV(p, reg, reg);
+	brw_pop_insn_state(p);
+    }
+}
+
+/* All these variables are pretty confusing - we might be better off
+ * using bitmasks and macros for this, in the old style.  Or perhaps
+ * just having the caller instantiate the fields in dword3 itself.
+ */
+void brw_urb_WRITE(struct brw_compile *p,
+		   struct brw_reg dest,
+		   uint32_t msg_reg_nr,
+		   struct brw_reg src0,
+		   int allocate,
+		   int used,
+		   uint32_t msg_length,
+		   uint32_t response_length,
+		   int eot,
+		   int writes_complete,
+		   uint32_t offset,
+		   uint32_t swizzle)
+{
+    struct brw_instruction *insn = brw_next_instruction(p, BRW_OPCODE_SEND);
+
+    assert(msg_length < 16);
+
+    brw_instruction_set_destination (insn, dest);
+    brw_instruction_set_source0 (insn, src0);
+    brw_set_src1 (insn, brw_imm_d (0));
+
+    insn->header.destreg__conditonalmod = msg_reg_nr;
+
+    brw_set_urb_message (insn,
+			 allocate,
+			 used,
+			 msg_length,
+			 response_length,
+			 eot,
+			 writes_complete,
+			 offset,
+			 swizzle);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu-util.c b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu-util.c
new file mode 100644
index 0000000..592235b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu-util.c
@@ -0,0 +1,121 @@
+/*
+   Copyright (C) Intel Corp.  2006.  All Rights Reserved.
+   Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+   develop this 3D driver.
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice (including the
+   next paragraph) shall be included in all copies or substantial
+   portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+   IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+   LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+   OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ **********************************************************************/
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#include "cairoint.h"
+#include "cairo-drm-intel-brw-eu.h"
+
+
+void brw_math_invert( struct brw_compile *p,
+		      struct brw_reg dst,
+		      struct brw_reg src)
+{
+    brw_math( p,
+	      dst,
+	      BRW_MATH_FUNCTION_INV,
+	      BRW_MATH_SATURATE_NONE,
+	      0,
+	      src,
+	      BRW_MATH_PRECISION_FULL,
+	      BRW_MATH_DATA_VECTOR );
+}
+
+
+
+void brw_copy4(struct brw_compile *p,
+	       struct brw_reg dst,
+	       struct brw_reg src,
+	       uint32_t count)
+{
+    uint32_t i;
+
+    dst = vec4(dst);
+    src = vec4(src);
+
+    for (i = 0; i < count; i++)
+    {
+	uint32_t delta = i*32;
+	brw_MOV(p, byte_offset(dst, delta),    byte_offset(src, delta));
+	brw_MOV(p, byte_offset(dst, delta+16), byte_offset(src, delta+16));
+    }
+}
+
+
+void brw_copy8(struct brw_compile *p,
+	       struct brw_reg dst,
+	       struct brw_reg src,
+	       uint32_t count)
+{
+    uint32_t i;
+
+    dst = vec8(dst);
+    src = vec8(src);
+
+    for (i = 0; i < count; i++)
+    {
+	uint32_t delta = i*32;
+	brw_MOV(p, byte_offset(dst, delta),    byte_offset(src, delta));
+    }
+}
+
+
+void brw_copy_indirect_to_indirect(struct brw_compile *p,
+				   struct brw_indirect dst_ptr,
+				   struct brw_indirect src_ptr,
+				   uint32_t count)
+{
+    uint32_t i;
+
+    for (i = 0; i < count; i++)
+    {
+	uint32_t delta = i*32;
+	brw_MOV(p, deref_4f(dst_ptr, delta),    deref_4f(src_ptr, delta));
+	brw_MOV(p, deref_4f(dst_ptr, delta+16), deref_4f(src_ptr, delta+16));
+    }
+}
+
+
+void brw_copy_from_indirect(struct brw_compile *p,
+			    struct brw_reg dst,
+			    struct brw_indirect ptr,
+			    uint32_t count)
+{
+    uint32_t i;
+
+    dst = vec4(dst);
+
+    for (i = 0; i < count; i++)
+    {
+	uint32_t delta = i*32;
+	brw_MOV(p, byte_offset(dst, delta),    deref_4f(ptr, delta));
+	brw_MOV(p, byte_offset(dst, delta+16), deref_4f(ptr, delta+16));
+    }
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu.c b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu.c
new file mode 100644
index 0000000..2b47d8c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu.c
@@ -0,0 +1,250 @@
+/*
+   Copyright (C) Intel Corp.  2006.  All Rights Reserved.
+   Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+   develop this 3D driver.
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice (including the
+   next paragraph) shall be included in all copies or substantial
+   portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+   IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+   LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+   OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ **********************************************************************/
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "cairoint.h"
+#include "cairo-drm-intel-brw-eu.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+/* How does predicate control work when execution_size != 8?  Do I
+ * need to test/set for 0xffff when execution_size is 16?
+ */
+void brw_set_predicate_control_flag_value( struct brw_compile *p, uint32_t value )
+{
+    p->current->header.predicate_control = BRW_PREDICATE_NONE;
+
+    if (value != 0xff) {
+	if (value != p->flag_value) {
+	    brw_push_insn_state(p);
+	    brw_MOV(p, brw_flag_reg(), brw_imm_uw(value));
+	    p->flag_value = value;
+	    brw_pop_insn_state(p);
+	}
+
+	p->current->header.predicate_control = BRW_PREDICATE_NORMAL;
+    }
+}
+
+void brw_set_predicate_control( struct brw_compile *p, uint32_t pc )
+{
+    p->current->header.predicate_control = pc;
+}
+
+void brw_set_conditionalmod( struct brw_compile *p, uint32_t conditional )
+{
+    p->current->header.destreg__conditonalmod = conditional;
+}
+
+void brw_set_access_mode( struct brw_compile *p, uint32_t access_mode )
+{
+    p->current->header.access_mode = access_mode;
+}
+
+void brw_set_compression_control( struct brw_compile *p, int compression_control )
+{
+    p->current->header.compression_control = compression_control;
+}
+
+void brw_set_mask_control( struct brw_compile *p, uint32_t value )
+{
+    p->current->header.mask_control = value;
+}
+
+void brw_set_saturate( struct brw_compile *p, uint32_t value )
+{
+    p->current->header.saturate = value;
+}
+
+void brw_push_insn_state( struct brw_compile *p )
+{
+    assert(p->current != &p->stack[BRW_EU_MAX_INSN_STACK-1]);
+    memcpy(p->current+1, p->current, sizeof(struct brw_instruction));
+    p->current++;
+}
+
+void brw_pop_insn_state( struct brw_compile *p )
+{
+    assert(p->current != p->stack);
+    p->current--;
+}
+
+/************************************************************************/
+void
+brw_compile_init (struct brw_compile *p,
+		  cairo_bool_t is_g4x)
+{
+    p->nr_insn = 0;
+    p->current = p->stack;
+    memset (p->current, 0, sizeof (p->current[0]));
+
+    p->is_g4x = is_g4x;
+
+    /* Some defaults?  */
+    brw_set_mask_control (p, BRW_MASK_ENABLE); /* what does this do? */
+    brw_set_saturate (p, 0);
+    brw_set_compression_control (p, BRW_COMPRESSION_NONE);
+    brw_set_predicate_control_flag_value (p, 0xff);
+}
+
+const uint32_t *
+brw_get_program (struct brw_compile *p,
+		 uint32_t *sz)
+{
+    *sz = p->nr_insn * sizeof (struct brw_instruction);
+    return (const uint32_t *)p->store;
+}
+
+
+
+/*
+ * Subroutine calls require special attention.
+ * Mesa instructions may be expanded into multiple hardware instructions
+ * so the prog_instruction::BranchTarget field can't be used as an index
+ * into the hardware instructions.
+ *
+ * The BranchTarget field isn't needed, however.  Mesa's GLSL compiler
+ * emits CAL and BGNSUB instructions with labels that can be used to map
+ * subroutine calls to actual subroutine code blocks.
+ *
+ * The structures and function here implement patching of CAL instructions
+ * so they jump to the right subroutine code...
+ */
+
+
+/*
+ * For each OPCODE_BGNSUB we create one of these.
+ */
+struct brw_glsl_label
+{
+    const char *name; /*< the label string */
+    uint32_t position;  /*< the position of the brw instruction for this label */
+    struct brw_glsl_label *next;  /*< next in linked list */
+};
+
+
+/*
+ * For each OPCODE_CAL we create one of these.
+ */
+struct brw_glsl_call
+{
+    uint32_t call_inst_pos;  /*< location of the CAL instruction */
+    const char *sub_name;  /*< name of subroutine to call */
+    struct brw_glsl_call *next;  /*< next in linked list */
+};
+
+
+/*
+ * Called for each OPCODE_BGNSUB.
+ */
+    void
+brw_save_label(struct brw_compile *c, const char *name, uint32_t position)
+{
+    struct brw_glsl_label *label = calloc(1, sizeof *label);
+    label->name = name;
+    label->position = position;
+    label->next = c->first_label;
+    c->first_label = label;
+}
+
+
+/*
+ * Called for each OPCODE_CAL.
+ */
+    void
+brw_save_call(struct brw_compile *c, const char *name, uint32_t call_pos)
+{
+    struct brw_glsl_call *call = calloc(1, sizeof *call);
+    call->call_inst_pos = call_pos;
+    call->sub_name = name;
+    call->next = c->first_call;
+    c->first_call = call;
+}
+
+
+/*
+ * Lookup a label, return label's position/offset.
+ */
+    static uint32_t
+brw_lookup_label(struct brw_compile *c, const char *name)
+{
+    const struct brw_glsl_label *label;
+    for (label = c->first_label; label; label = label->next) {
+	if (strcmp(name, label->name) == 0) {
+	    return label->position;
+	}
+    }
+    abort();  /* should never happen */
+    return ~0;
+}
+
+
+/*
+ * When we're done generating code, this function is called to resolve
+ * subroutine calls.
+ */
+    void
+brw_resolve_cals(struct brw_compile *c)
+{
+    const struct brw_glsl_call *call;
+
+    for (call = c->first_call; call; call = call->next) {
+	const uint32_t sub_loc = brw_lookup_label(c, call->sub_name);
+	struct brw_instruction *brw_call_inst = &c->store[call->call_inst_pos];
+	struct brw_instruction *brw_sub_inst = &c->store[sub_loc];
+	int32_t offset = brw_sub_inst - brw_call_inst;
+
+	/* patch brw_inst1 to point to brw_inst2 */
+	brw_set_src1(brw_call_inst, brw_imm_d(offset * 16));
+    }
+
+    /* free linked list of calls */
+    {
+	struct brw_glsl_call *call, *next;
+	for (call = c->first_call; call; call = next) {
+	    next = call->next;
+	    free(call);
+	}
+	c->first_call = NULL;
+    }
+
+    /* free linked list of labels */
+    {
+	struct brw_glsl_label *label, *next;
+	for (label = c->first_label; label; label = next) {
+	    next = label->next;
+	    free(label);
+	}
+	c->first_label = NULL;
+    }
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu.h b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu.h
new file mode 100644
index 0000000..ef6e977
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-eu.h
@@ -0,0 +1,1044 @@
+/*
+   Copyright (C) Intel Corp.  2006.  All Rights Reserved.
+   Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+   develop this 3D driver.
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice (including the
+   next paragraph) shall be included in all copies or substantial
+   portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+   IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+   LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+   OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ **********************************************************************/
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#ifndef CAIRO_DRM_INTEL_BRW_EU_H
+#define CAIRO_DRM_INTEL_BRW_EU_H
+
+#include "cairo.h"
+#include "cairo-drm-intel-brw-structs.h"
+#include "cairo-drm-intel-brw-defines.h"
+
+#include <assert.h>
+
+
+/*
+ * Writemask values, 1 bit per component.
+ */
+#define WRITEMASK_X     0x1
+#define WRITEMASK_Y     0x2
+#define WRITEMASK_Z     0x4
+#define WRITEMASK_W     0x8
+#define WRITEMASK_XY    (WRITEMASK_X | WRITEMASK_Y)
+#define WRITEMASK_XZ    (WRITEMASK_X | WRITEMASK_Z)
+#define WRITEMASK_YZ    (WRITEMASK_Y | WRITEMASK_Z)
+#define WRITEMASK_XYZ   (WRITEMASK_X | WRITEMASK_Y | WRITEMASK_Z)
+#define WRITEMASK_XW    (WRITEMASK_X | WRITEMASK_W)
+#define WRITEMASK_YW    (WRITEMASK_Y | WRITEMASK_W)
+#define WRITEMASK_XYW   (WRITEMASK_X | WRITEMASK_Y | WRITEMASK_W)
+#define WRITEMASK_ZW    (WRITEMASK_Z | WRITEMASK_W)
+#define WRITEMASK_XZW   (WRITEMASK_X | WRITEMASK_Z | WRITEMASK_W)
+#define WRITEMASK_YZW   (WRITEMASK_Y | WRITEMASK_Z | WRITEMASK_W)
+#define WRITEMASK_XYZW  (WRITEMASK_X | WRITEMASK_Y | WRITEMASK_Z | WRITEMASK_W)
+
+#define BRW_SWIZZLE4(a,b,c,d) (((a)<<0) | ((b)<<2) | ((c)<<4) | ((d)<<6))
+#define BRW_GET_SWZ(swz, idx) (((swz) >> ((idx)*2)) & 0x3)
+
+#define BRW_SWIZZLE_NOOP      BRW_SWIZZLE4 (0,1,2,3)
+#define BRW_SWIZZLE_XYZW      BRW_SWIZZLE4 (0,1,2,3)
+#define BRW_SWIZZLE_XXXX      BRW_SWIZZLE4 (0,0,0,0)
+#define BRW_SWIZZLE_XYXY      BRW_SWIZZLE4 (0,1,0,1)
+
+#define REG_SIZE (8*4)
+
+/* These aren't hardware structs, just something useful for us to pass around:
+ *
+ * Align1 operation has a lot of control over input ranges.  Used in
+ * WM programs to implement shaders decomposed into "channel serial"
+ * or "structure of array" form:
+ */
+struct brw_reg {
+   uint32_t type:4;
+   uint32_t file:2;
+   uint32_t nr:8;
+   uint32_t subnr:5;		/* :1 in align16 */
+   uint32_t negate:1;		/* source only */
+   uint32_t abs:1;		/* source only */
+   uint32_t vstride:4;		/* source only */
+   uint32_t width:3;		/* src only, align1 only */
+   uint32_t hstride:2;		/* align1 only */
+   uint32_t address_mode:1;	/* relative addressing, hopefully! */
+   uint32_t pad0:1;
+
+   union {
+      struct {
+	 uint32_t swizzle:8;		/* src only, align16 only */
+	 uint32_t writemask:4;		/* dest only, align16 only */
+	 int32_t  indirect_offset:10;	/* relative addressing offset */
+	 uint32_t pad1:10;		/* two dwords total */
+      } bits;
+
+      float f;
+      int32_t   d;
+      uint32_t ud;
+   } dw1;
+};
+
+struct brw_indirect {
+   uint32_t addr_subnr:4;
+   int32_t addr_offset:10;
+   uint32_t pad:18;
+};
+
+struct brw_glsl_label;
+struct brw_glsl_call;
+
+#define BRW_EU_MAX_INSN_STACK 5
+#define BRW_EU_MAX_INSN 200
+
+struct brw_compile {
+   struct brw_instruction store[BRW_EU_MAX_INSN];
+   uint32_t nr_insn;
+
+   cairo_bool_t is_g4x;
+
+   /* Allow clients to push/pop instruction state:
+    */
+   struct brw_instruction stack[BRW_EU_MAX_INSN_STACK];
+   struct brw_instruction *current;
+
+   uint32_t flag_value;
+   int single_program_flow;
+   struct brw_context *brw;
+
+   struct brw_glsl_label *first_label;  /*< linked list of labels */
+   struct brw_glsl_call *first_call;    /*< linked list of CALs */
+};
+
+cairo_private void
+brw_save_label (struct brw_compile *c,
+		const char *name,
+		uint32_t position);
+
+cairo_private void
+brw_save_call (struct brw_compile *c,
+	       const char *name,
+	       uint32_t call_pos);
+
+cairo_private void
+brw_resolve_cals (struct brw_compile *c);
+
+static cairo_always_inline int
+type_sz (uint32_t type)
+{
+   switch (type) {
+   case BRW_REGISTER_TYPE_UD:
+   case BRW_REGISTER_TYPE_D:
+   case BRW_REGISTER_TYPE_F:
+      return 4;
+   case BRW_REGISTER_TYPE_HF:
+   case BRW_REGISTER_TYPE_UW:
+   case BRW_REGISTER_TYPE_W:
+      return 2;
+   case BRW_REGISTER_TYPE_UB:
+   case BRW_REGISTER_TYPE_B:
+      return 1;
+   default:
+      return 0;
+   }
+}
+
+/*
+ * Construct a brw_reg.
+ * \param file  one of the BRW_x_REGISTER_FILE values
+ * \param nr  register number/index
+ * \param subnr  register sub number
+ * \param type  one of BRW_REGISTER_TYPE_x
+ * \param vstride  one of BRW_VERTICAL_STRIDE_x
+ * \param width  one of BRW_WIDTH_x
+ * \param hstride  one of BRW_HORIZONTAL_STRIDE_x
+ * \param swizzle  one of BRW_SWIZZLE_x
+ * \param writemask  WRITEMASK_X/Y/Z/W bitfield
+ */
+static cairo_always_inline struct brw_reg
+brw_reg (uint32_t file,
+	 uint32_t nr,
+	 uint32_t subnr,
+	 uint32_t type,
+	 uint32_t vstride,
+	 uint32_t width,
+	 uint32_t hstride,
+	 uint32_t swizzle,
+	 uint32_t writemask)
+{
+   struct brw_reg reg;
+
+   if (type == BRW_GENERAL_REGISTER_FILE)
+      assert(nr < 128);
+   else if (type == BRW_MESSAGE_REGISTER_FILE)
+      assert(nr < 9);
+   else if (type == BRW_ARCHITECTURE_REGISTER_FILE)
+      assert(nr <= BRW_ARF_IP);
+
+   reg.type = type;
+   reg.file = file;
+   reg.nr = nr;
+   reg.subnr = subnr * type_sz(type);
+   reg.negate = 0;
+   reg.abs = 0;
+   reg.vstride = vstride;
+   reg.width = width;
+   reg.hstride = hstride;
+   reg.address_mode = BRW_ADDRESS_DIRECT;
+   reg.pad0 = 0;
+
+   /* Could do better: If the reg is r5.3<0;1,0>, we probably want to
+    * set swizzle and writemask to W, as the lower bits of subnr will
+    * be lost when converted to align16.  This is probably too much to
+    * keep track of as you'd want it adjusted by suboffset(), etc.
+    * Perhaps fix up when converting to align16?
+    */
+   reg.dw1.bits.swizzle = swizzle;
+   reg.dw1.bits.writemask = writemask;
+   reg.dw1.bits.indirect_offset = 0;
+   reg.dw1.bits.pad1 = 0;
+
+   return reg;
+}
+
+/* Construct float[16] register */
+static cairo_always_inline struct brw_reg
+brw_vec16_reg (uint32_t file,
+	       uint32_t nr,
+	       uint32_t subnr)
+{
+    return brw_reg (file, nr, subnr,
+		    BRW_REGISTER_TYPE_F,
+		    BRW_VERTICAL_STRIDE_16,
+		    BRW_WIDTH_16,
+		    BRW_HORIZONTAL_STRIDE_1,
+		    BRW_SWIZZLE_XYZW,
+		    WRITEMASK_XYZW);
+}
+
+/* Construct float[8] register */
+static cairo_always_inline struct brw_reg
+brw_vec8_reg (uint32_t file,
+	      uint32_t nr,
+	      uint32_t subnr)
+{
+    return brw_reg (file, nr, subnr,
+		    BRW_REGISTER_TYPE_F,
+		    BRW_VERTICAL_STRIDE_8,
+		    BRW_WIDTH_8,
+		    BRW_HORIZONTAL_STRIDE_1,
+		    BRW_SWIZZLE_XYZW,
+		    WRITEMASK_XYZW);
+}
+
+/* Construct float[4] register */
+static cairo_always_inline struct brw_reg
+brw_vec4_reg (uint32_t file,
+	      uint32_t nr,
+	      uint32_t subnr)
+{
+   return brw_reg (file, nr, subnr,
+		   BRW_REGISTER_TYPE_F,
+		   BRW_VERTICAL_STRIDE_4,
+		   BRW_WIDTH_4,
+		   BRW_HORIZONTAL_STRIDE_1,
+		   BRW_SWIZZLE_XYZW,
+		   WRITEMASK_XYZW);
+}
+
+/* Construct float[2] register */
+static cairo_always_inline struct brw_reg
+brw_vec2_reg (uint32_t file,
+	      uint32_t nr,
+	      uint32_t subnr)
+{
+   return brw_reg (file, nr, subnr,
+		   BRW_REGISTER_TYPE_F,
+		   BRW_VERTICAL_STRIDE_2,
+		   BRW_WIDTH_2,
+		   BRW_HORIZONTAL_STRIDE_1,
+		   BRW_SWIZZLE_XYXY,
+		   WRITEMASK_XY);
+}
+
+/* Construct float[1] register */
+static cairo_always_inline struct brw_reg
+brw_vec1_reg (uint32_t file,
+	      uint32_t nr,
+	      uint32_t subnr)
+{
+   return brw_reg (file, nr, subnr,
+		   BRW_REGISTER_TYPE_F,
+		   BRW_VERTICAL_STRIDE_0,
+		   BRW_WIDTH_1,
+		   BRW_HORIZONTAL_STRIDE_0,
+		   BRW_SWIZZLE_XXXX,
+		   WRITEMASK_X);
+}
+
+static cairo_always_inline struct brw_reg
+retype (struct brw_reg reg,
+	uint32_t type)
+{
+   reg.type = type;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+suboffset (struct brw_reg reg,
+	   uint32_t delta)
+{
+   reg.subnr += delta * type_sz (reg.type);
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+offset (struct brw_reg reg,
+	uint32_t delta)
+{
+   reg.nr += delta;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+byte_offset (struct brw_reg reg,
+	     uint32_t bytes)
+{
+   uint32_t newoffset = reg.nr * REG_SIZE + reg.subnr + bytes;
+   reg.nr = newoffset / REG_SIZE;
+   reg.subnr = newoffset % REG_SIZE;
+   return reg;
+}
+
+/* Construct unsigned word[16] register */
+static cairo_always_inline struct brw_reg
+brw_uw16_reg (uint32_t file,
+	      uint32_t nr,
+	      uint32_t subnr)
+{
+   return suboffset (retype (brw_vec16_reg (file, nr, 0), BRW_REGISTER_TYPE_UW), subnr);
+}
+
+/* Construct unsigned word[8] register */
+static cairo_always_inline struct brw_reg
+brw_uw8_reg (uint32_t file,
+	     uint32_t nr,
+	     uint32_t subnr)
+{
+   return suboffset (retype (brw_vec8_reg (file, nr, 0), BRW_REGISTER_TYPE_UW), subnr);
+}
+
+/* Construct unsigned word[2] register */
+static cairo_always_inline struct brw_reg
+brw_uw2_reg (uint32_t file,
+	     uint32_t nr,
+	     uint32_t subnr)
+{
+   return suboffset (retype (brw_vec2_reg (file, nr, 0), BRW_REGISTER_TYPE_UW), subnr);
+}
+
+/* Construct unsigned word[1] register */
+static cairo_always_inline struct brw_reg
+brw_uw1_reg (uint32_t file,
+	     uint32_t nr,
+	     uint32_t subnr)
+{
+   return suboffset (retype (brw_vec1_reg (file, nr, 0), BRW_REGISTER_TYPE_UW), subnr);
+}
+
+static cairo_always_inline struct brw_reg
+brw_imm_reg (uint32_t type)
+{
+   return brw_reg (BRW_IMMEDIATE_VALUE,
+		   0,
+		   0,
+		   type,
+		   BRW_VERTICAL_STRIDE_0,
+		   BRW_WIDTH_1,
+		   BRW_HORIZONTAL_STRIDE_0,
+		   0,
+		   0);
+}
+
+/* Construct float immediate register */
+static cairo_always_inline struct brw_reg brw_imm_f( float f )
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_F);
+   imm.dw1.f = f;
+   return imm;
+}
+
+/* Construct integer immediate register */
+static cairo_always_inline struct brw_reg brw_imm_d( int32_t d )
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_D);
+   imm.dw1.d = d;
+   return imm;
+}
+
+/* Construct uint immediate register */
+static cairo_always_inline struct brw_reg brw_imm_ud( uint32_t ud )
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_UD);
+   imm.dw1.ud = ud;
+   return imm;
+}
+
+/* Construct ushort immediate register */
+static cairo_always_inline struct brw_reg brw_imm_uw( uint16_t uw )
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_UW);
+   imm.dw1.ud = uw | (uw << 16);
+   return imm;
+}
+
+/* Construct short immediate register */
+static cairo_always_inline struct brw_reg brw_imm_w( int16_t w )
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_W);
+   imm.dw1.d = w | (w << 16);
+   return imm;
+}
+
+/* brw_imm_b and brw_imm_ub aren't supported by hardware - the type
+ * numbers alias with _V and _VF below:
+ */
+
+/* Construct vector of eight signed half-byte values */
+static cairo_always_inline
+struct brw_reg brw_imm_v (uint32_t v)
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_V);
+   imm.vstride = BRW_VERTICAL_STRIDE_0;
+   imm.width = BRW_WIDTH_8;
+   imm.hstride = BRW_HORIZONTAL_STRIDE_1;
+   imm.dw1.ud = v;
+   return imm;
+}
+
+/* Construct vector of four 8-bit float values */
+static cairo_always_inline struct brw_reg
+brw_imm_vf (uint32_t v)
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_VF);
+   imm.vstride = BRW_VERTICAL_STRIDE_0;
+   imm.width = BRW_WIDTH_4;
+   imm.hstride = BRW_HORIZONTAL_STRIDE_1;
+   imm.dw1.ud = v;
+   return imm;
+}
+
+#define VF_ZERO 0x0
+#define VF_ONE  0x30
+#define VF_NEG  (1<<7)
+
+static cairo_always_inline struct brw_reg
+brw_imm_vf4 (uint32_t v0,
+	     uint32_t v1,
+	     uint32_t v2,
+	     uint32_t v3)
+{
+   struct brw_reg imm = brw_imm_reg(BRW_REGISTER_TYPE_VF);
+   imm.vstride = BRW_VERTICAL_STRIDE_0;
+   imm.width = BRW_WIDTH_4;
+   imm.hstride = BRW_HORIZONTAL_STRIDE_1;
+   imm.dw1.ud = ((v0 << 0) |
+		 (v1 << 8) |
+		 (v2 << 16) |
+		 (v3 << 24));
+   return imm;
+}
+
+static cairo_always_inline struct brw_reg
+brw_address (struct brw_reg reg)
+{
+   return brw_imm_uw (reg.nr * REG_SIZE + reg.subnr);
+}
+
+/* Construct float[1] general-purpose register */
+static cairo_always_inline struct brw_reg
+brw_vec1_grf (uint32_t nr, uint32_t subnr)
+{
+   return brw_vec1_reg (BRW_GENERAL_REGISTER_FILE, nr, subnr);
+}
+
+/* Construct float[2] general-purpose register */
+static cairo_always_inline struct brw_reg
+brw_vec2_grf (uint32_t nr, uint32_t subnr)
+{
+   return brw_vec2_reg (BRW_GENERAL_REGISTER_FILE, nr, subnr);
+}
+
+/* Construct float[4] general-purpose register */
+static cairo_always_inline struct brw_reg
+brw_vec4_grf (uint32_t nr, uint32_t subnr)
+{
+   return brw_vec4_reg (BRW_GENERAL_REGISTER_FILE, nr, subnr);
+}
+
+/* Construct float[8] general-purpose register */
+static cairo_always_inline struct brw_reg
+brw_vec8_grf (uint32_t nr)
+{
+   return brw_vec8_reg (BRW_GENERAL_REGISTER_FILE, nr, 0);
+}
+
+static cairo_always_inline struct brw_reg
+brw_uw8_grf (uint32_t nr, uint32_t subnr)
+{
+   return brw_uw8_reg (BRW_GENERAL_REGISTER_FILE, nr, subnr);
+}
+
+static cairo_always_inline struct brw_reg
+brw_uw16_grf (uint32_t nr, uint32_t subnr)
+{
+   return brw_uw16_reg (BRW_GENERAL_REGISTER_FILE, nr, subnr);
+}
+
+/* Construct null register (usually used for setting condition codes) */
+static cairo_always_inline struct brw_reg
+brw_null_reg (void)
+{
+   return brw_vec8_reg (BRW_ARCHITECTURE_REGISTER_FILE,
+			BRW_ARF_NULL,
+			0);
+}
+
+static cairo_always_inline struct brw_reg
+brw_address_reg (uint32_t subnr)
+{
+   return brw_uw1_reg (BRW_ARCHITECTURE_REGISTER_FILE,
+		       BRW_ARF_ADDRESS,
+		       subnr);
+}
+
+/* If/else instructions break in align16 mode if writemask & swizzle
+ * aren't xyzw.  This goes against the convention for other scalar
+ * regs:
+ */
+static cairo_always_inline struct brw_reg
+brw_ip_reg (void)
+{
+   return brw_reg (BRW_ARCHITECTURE_REGISTER_FILE,
+		   BRW_ARF_IP,
+		   0,
+		   BRW_REGISTER_TYPE_UD,
+		   BRW_VERTICAL_STRIDE_4, /* ? */
+		   BRW_WIDTH_1,
+		   BRW_HORIZONTAL_STRIDE_0,
+		   BRW_SWIZZLE_XYZW,
+		   WRITEMASK_XYZW);
+}
+
+static cairo_always_inline struct brw_reg
+brw_acc_reg (void)
+{
+   return brw_vec8_reg (BRW_ARCHITECTURE_REGISTER_FILE,
+			BRW_ARF_ACCUMULATOR,
+			0);
+}
+
+static cairo_always_inline struct brw_reg
+brw_flag_reg (void)
+{
+   return brw_uw1_reg (BRW_ARCHITECTURE_REGISTER_FILE,
+		       BRW_ARF_FLAG,
+		       0);
+}
+
+static cairo_always_inline struct brw_reg
+brw_mask_reg (uint32_t subnr)
+{
+   return brw_uw1_reg (BRW_ARCHITECTURE_REGISTER_FILE,
+		       BRW_ARF_MASK,
+		       subnr);
+}
+
+static cairo_always_inline struct brw_reg
+brw_message4_reg (uint32_t nr)
+{
+    return brw_vec4_reg (BRW_MESSAGE_REGISTER_FILE,
+			 nr,
+			 0);
+}
+
+static cairo_always_inline struct brw_reg
+brw_message_reg (uint32_t nr)
+{
+   return brw_vec8_reg (BRW_MESSAGE_REGISTER_FILE,
+			nr,
+			0);
+}
+
+/* This is almost always called with a numeric constant argument, so
+ * make things easy to evaluate at compile time:
+ */
+static cairo_always_inline uint32_t
+cvt (uint32_t val)
+{
+   switch (val) {
+   case 0: return 0;
+   case 1: return 1;
+   case 2: return 2;
+   case 4: return 3;
+   case 8: return 4;
+   case 16: return 5;
+   case 32: return 6;
+   }
+   return 0;
+}
+
+static cairo_always_inline struct brw_reg
+stride (struct brw_reg reg,
+	uint32_t vstride,
+	uint32_t width,
+	uint32_t hstride)
+{
+   reg.vstride = cvt (vstride);
+   reg.width   = cvt (width) - 1;
+   reg.hstride = cvt (hstride);
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+vec16 (struct brw_reg reg)
+{
+   return stride (reg, 16,16,1);
+}
+
+static cairo_always_inline struct brw_reg
+vec8 (struct brw_reg reg)
+{
+   return stride (reg, 8,8,1);
+}
+
+static cairo_always_inline struct brw_reg
+vec4 (struct brw_reg reg)
+{
+   return stride (reg, 4,4,1);
+}
+
+static cairo_always_inline struct brw_reg
+vec2 (struct brw_reg reg)
+{
+   return stride (reg, 2,2,1);
+}
+
+static cairo_always_inline struct brw_reg
+vec1 (struct brw_reg reg)
+{
+   return stride (reg, 0,1,0);
+}
+
+static cairo_always_inline struct brw_reg
+get_element (struct brw_reg reg, uint32_t elt)
+{
+   return vec1 (suboffset (reg, elt));
+}
+
+static cairo_always_inline struct brw_reg
+get_element_ud (struct brw_reg reg, uint32_t elt)
+{
+   return vec1 (suboffset (retype (reg, BRW_REGISTER_TYPE_UD), elt));
+}
+
+static cairo_always_inline struct brw_reg
+brw_swizzle (struct brw_reg reg,
+	     uint32_t x,
+	     uint32_t y,
+	     uint32_t z,
+	     uint32_t w)
+{
+    reg.dw1.bits.swizzle = BRW_SWIZZLE4 (BRW_GET_SWZ (reg.dw1.bits.swizzle, x),
+					 BRW_GET_SWZ (reg.dw1.bits.swizzle, y),
+					 BRW_GET_SWZ (reg.dw1.bits.swizzle, z),
+					 BRW_GET_SWZ (reg.dw1.bits.swizzle, w));
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+brw_swizzle1 (struct brw_reg reg,
+	      uint32_t x)
+{
+   return brw_swizzle (reg, x, x, x, x);
+}
+
+static cairo_always_inline struct brw_reg
+brw_writemask (struct brw_reg reg,
+	       uint32_t mask)
+{
+   reg.dw1.bits.writemask &= mask;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+brw_set_writemask (struct brw_reg reg,
+		   uint32_t mask)
+{
+   reg.dw1.bits.writemask = mask;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+negate (struct brw_reg reg)
+{
+   reg.negate ^= 1;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+brw_abs (struct brw_reg reg)
+{
+   reg.abs = 1;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+brw_vec4_indirect (uint32_t subnr,
+		   int32_t offset)
+{
+   struct brw_reg reg = brw_vec4_grf (0, 0);
+   reg.subnr = subnr;
+   reg.address_mode = BRW_ADDRESS_REGISTER_INDIRECT_REGISTER;
+   reg.dw1.bits.indirect_offset = offset;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+brw_vec1_indirect (uint32_t subnr,
+		   int32_t offset)
+{
+   struct brw_reg reg = brw_vec1_grf (0, 0);
+   reg.subnr = subnr;
+   reg.address_mode = BRW_ADDRESS_REGISTER_INDIRECT_REGISTER;
+   reg.dw1.bits.indirect_offset = offset;
+   return reg;
+}
+
+static cairo_always_inline struct brw_reg
+deref_4f (struct brw_indirect ptr, int32_t offset)
+{
+   return brw_vec4_indirect (ptr.addr_subnr, ptr.addr_offset + offset);
+}
+
+static cairo_always_inline struct brw_reg
+deref_1f(struct brw_indirect ptr, int32_t offset)
+{
+   return brw_vec1_indirect (ptr.addr_subnr, ptr.addr_offset + offset);
+}
+
+static cairo_always_inline struct brw_reg
+deref_4b(struct brw_indirect ptr, int32_t offset)
+{
+   return retype (deref_4f (ptr, offset), BRW_REGISTER_TYPE_B);
+}
+
+static cairo_always_inline struct brw_reg
+deref_1uw(struct brw_indirect ptr, int32_t offset)
+{
+   return retype (deref_1f (ptr, offset), BRW_REGISTER_TYPE_UW);
+}
+
+static cairo_always_inline struct brw_reg
+deref_1d (struct brw_indirect ptr, int32_t offset)
+{
+   return retype (deref_1f (ptr, offset), BRW_REGISTER_TYPE_D);
+}
+
+static cairo_always_inline struct brw_reg
+deref_1ud (struct brw_indirect ptr, int32_t offset)
+{
+   return retype (deref_1f (ptr, offset), BRW_REGISTER_TYPE_UD);
+}
+
+static cairo_always_inline struct brw_reg
+get_addr_reg (struct brw_indirect ptr)
+{
+   return brw_address_reg (ptr.addr_subnr);
+}
+
+static cairo_always_inline struct brw_indirect
+brw_indirect_offset (struct brw_indirect ptr, int32_t offset)
+{
+   ptr.addr_offset += offset;
+   return ptr;
+}
+
+static cairo_always_inline struct brw_indirect
+brw_indirect (uint32_t addr_subnr, int32_t offset)
+{
+   struct brw_indirect ptr;
+   ptr.addr_subnr = addr_subnr;
+   ptr.addr_offset = offset;
+   ptr.pad = 0;
+   return ptr;
+}
+
+static cairo_always_inline struct brw_instruction *
+current_insn (struct brw_compile *p)
+{
+   return &p->store[p->nr_insn];
+}
+
+cairo_private void brw_pop_insn_state (struct brw_compile *p);
+cairo_private void brw_push_insn_state (struct brw_compile *p);
+cairo_private void brw_set_mask_control (struct brw_compile *p, uint32_t value);
+cairo_private void brw_set_saturate (struct brw_compile *p, uint32_t value);
+cairo_private void brw_set_access_mode (struct brw_compile *p, uint32_t access_mode);
+cairo_private void brw_set_compression_control (struct brw_compile *p, int control);
+cairo_private void brw_set_predicate_control_flag_value (struct brw_compile *p, uint32_t value);
+cairo_private void brw_set_predicate_control (struct brw_compile *p, uint32_t pc);
+cairo_private void brw_set_conditionalmod (struct brw_compile *p, uint32_t conditional);
+
+cairo_private void
+brw_compile_init (struct brw_compile *p,
+		  cairo_bool_t is_g4x);
+cairo_private const uint32_t *brw_get_program (struct brw_compile *p, uint32_t *sz);
+
+/* Helpers for regular instructions:
+ */
+#define ALU1(OP)					\
+cairo_private_no_warn struct brw_instruction * \
+brw_##OP(struct brw_compile *p,	\
+	 struct brw_reg dest,			\
+	 struct brw_reg src0);
+
+#define ALU2(OP)					\
+cairo_private_no_warn struct brw_instruction * \
+brw_##OP(struct brw_compile *p,	\
+	 struct brw_reg dest,			\
+	 struct brw_reg src0,			\
+	 struct brw_reg src1);
+
+ALU1(MOV)
+ALU2(SEL)
+ALU1(NOT)
+ALU2(AND)
+ALU2(OR)
+ALU2(XOR)
+ALU2(SHR)
+ALU2(SHL)
+ALU2(RSR)
+ALU2(RSL)
+ALU2(ASR)
+ALU2(JMPI)
+ALU2(ADD)
+ALU2(MUL)
+ALU1(FRC)
+ALU1(RNDD)
+ALU1(RNDZ)
+ALU2(MAC)
+ALU2(MACH)
+ALU1(LZD)
+ALU2(DP4)
+ALU2(DPH)
+ALU2(DP3)
+ALU2(DP2)
+ALU2(LINE)
+
+#undef ALU1
+#undef ALU2
+
+/* Helpers for SEND instruction: */
+cairo_private void
+brw_urb_WRITE (struct brw_compile *p,
+	       struct brw_reg dest,
+	       uint32_t msg_reg_nr,
+	       struct brw_reg src0,
+	       int allocate,
+	       int used,
+	       uint32_t msg_length,
+	       uint32_t response_length,
+	       int eot,
+	       int writes_complete,
+	       uint32_t offset,
+	       uint32_t swizzle);
+
+cairo_private void
+brw_fb_WRITE (struct brw_compile *p,
+	      struct brw_reg dest,
+	      uint32_t msg_reg_nr,
+	      struct brw_reg src0,
+	      uint32_t binding_table_index,
+	      uint32_t msg_length,
+	      uint32_t response_length,
+	      int eot);
+
+cairo_private void
+brw_SAMPLE (struct brw_compile *p,
+	    struct brw_reg dest,
+	    uint32_t msg_reg_nr,
+	    struct brw_reg src0,
+	    uint32_t binding_table_index,
+	    uint32_t sampler,
+	    uint32_t writemask,
+	    uint32_t msg_type,
+	    uint32_t response_length,
+	    uint32_t msg_length,
+	    cairo_bool_t eot);
+
+cairo_private void
+brw_math_16 (struct brw_compile *p,
+	     struct brw_reg dest,
+	     uint32_t function,
+	     uint32_t saturate,
+	     uint32_t msg_reg_nr,
+	     struct brw_reg src,
+	     uint32_t precision);
+
+cairo_private void
+brw_math (struct brw_compile *p,
+	  struct brw_reg dest,
+	  uint32_t function,
+	  uint32_t saturate,
+	  uint32_t msg_reg_nr,
+	  struct brw_reg src,
+	  uint32_t data_type,
+	  uint32_t precision);
+
+cairo_private void
+brw_dp_READ_16 (struct brw_compile *p,
+		struct brw_reg dest,
+		uint32_t msg_reg_nr,
+		uint32_t scratch_offset);
+
+cairo_private void
+brw_dp_WRITE_16 (struct brw_compile *p,
+		 struct brw_reg src,
+		 uint32_t msg_reg_nr,
+		 uint32_t scratch_offset);
+
+/* If/else/endif.  Works by manipulating the execution flags on each
+ * channel.
+ */
+cairo_private struct brw_instruction *
+brw_IF (struct brw_compile *p,
+	uint32_t execute_size);
+
+cairo_private struct brw_instruction *
+brw_ELSE (struct brw_compile *p,
+	  struct brw_instruction *if_insn);
+
+cairo_private void
+brw_ENDIF (struct brw_compile *p,
+	   struct brw_instruction *if_or_else_insn);
+
+
+/* DO/WHILE loops: */
+cairo_private struct brw_instruction *
+brw_DO (struct brw_compile *p,
+	uint32_t execute_size);
+
+cairo_private struct brw_instruction *
+brw_WHILE (struct brw_compile *p,
+	   struct brw_instruction *patch_insn);
+
+cairo_private struct brw_instruction *
+brw_BREAK (struct brw_compile *p);
+
+cairo_private struct brw_instruction *
+brw_CONT (struct brw_compile *p);
+
+/* Forward jumps: */
+cairo_private void
+brw_land_fwd_jump (struct brw_compile *p,
+		  struct brw_instruction *jmp_insn);
+
+cairo_private void
+brw_NOP (struct brw_compile *p);
+
+/* Special case: there is never a destination, execution size will be
+ * taken from src0:
+ */
+cairo_private void
+brw_CMP (struct brw_compile *p,
+	 struct brw_reg dest,
+	 uint32_t conditional,
+	 struct brw_reg src0,
+	 struct brw_reg src1);
+
+cairo_private void
+brw_print_reg (struct brw_reg reg);
+
+cairo_private struct brw_instruction *
+brw_next_instruction (struct brw_compile *p,
+		      uint32_t opcode);
+
+cairo_private void
+brw_instruction_set_destination (struct brw_instruction *insn,
+				 struct brw_reg dest);
+
+cairo_private void
+brw_instruction_set_source0 (struct brw_instruction *insn,
+			     struct brw_reg reg);
+
+cairo_private void
+brw_instruction_set_dp_write_message (struct brw_instruction *insn,
+				      uint32_t binding_table_index,
+				      uint32_t msg_control,
+				      uint32_t msg_type,
+				      uint32_t msg_length,
+				      uint32_t pixel_scoreboard_clear,
+				      uint32_t response_length,
+				      uint32_t end_of_thread);
+
+/***********************************************************************
+ * brw_eu_util.c:
+ */
+
+cairo_private void
+brw_copy_indirect_to_indirect (struct brw_compile *p,
+			       struct brw_indirect dst_ptr,
+			       struct brw_indirect src_ptr,
+			       uint32_t count);
+
+cairo_private void
+brw_copy_from_indirect (struct brw_compile *p,
+		       struct brw_reg dst,
+		       struct brw_indirect ptr,
+		       uint32_t count);
+
+cairo_private void
+brw_copy4 (struct brw_compile *p,
+	   struct brw_reg dst,
+	   struct brw_reg src,
+	   uint32_t count);
+
+cairo_private void
+brw_copy8 (struct brw_compile *p,
+	   struct brw_reg dst,
+	   struct brw_reg src,
+	   uint32_t count);
+
+cairo_private void
+brw_math_invert (struct brw_compile *p,
+		 struct brw_reg dst,
+		 struct brw_reg src);
+
+cairo_private void
+brw_set_src1 (struct brw_instruction *insn,
+	      struct brw_reg reg);
+
+#endif
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-structs.h b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-structs.h
new file mode 100644
index 0000000..3ea9c6c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-brw-structs.h
@@ -0,0 +1,1329 @@
+/**************************************************************************
+ *
+ * Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef CAIRO_DRM_INTEL_BRW_STRUCTS_H
+#define CAIRO_DRM_INTEL_BRW_STRUCTS_H
+
+#include "cairo.h"
+#include "cairo-types-private.h"
+
+/* Command packets:
+*/
+struct header {
+    unsigned int length:16;
+    unsigned int opcode:16;
+};
+
+union header_union {
+    struct header bits;
+    unsigned int dword;
+};
+
+struct brw_3d_control {
+    struct {
+	unsigned int length:8;
+	unsigned int notify_enable:1;
+	unsigned int pad:3;
+	unsigned int wc_flush_enable:1;
+	unsigned int depth_stall_enable:1;
+	unsigned int operation:2;
+	unsigned int opcode:16;
+    } header;
+
+    struct {
+	unsigned int pad:2;
+	unsigned int dest_addr_type:1;
+	unsigned int dest_addr:29;
+    } dest;
+
+    unsigned int dword2;
+    unsigned int dword3;
+};
+
+
+struct brw_3d_primitive {
+    struct {
+	unsigned int length:8;
+	unsigned int pad:2;
+	unsigned int topology:5;
+	unsigned int indexed:1;
+	unsigned int opcode:16;
+    } header;
+
+    unsigned int verts_per_instance;
+    unsigned int start_vert_location;
+    unsigned int instance_count;
+    unsigned int start_instance_location;
+    unsigned int base_vert_location;
+};
+
+/* These seem to be passed around as function args, so it works out
+ * better to keep them as #defines:
+ */
+#define BRW_FLUSH_READ_CACHE           0x1
+#define BRW_FLUSH_STATE_CACHE          0x2
+#define BRW_INHIBIT_FLUSH_RENDER_CACHE 0x4
+#define BRW_FLUSH_SNAPSHOT_COUNTERS    0x8
+
+struct brw_mi_flush {
+    unsigned int flags:4;
+    unsigned int pad:12;
+    unsigned int opcode:16;
+};
+
+struct brw_vf_statistics {
+    unsigned int statistics_enable:1;
+    unsigned int pad:15;
+    unsigned int opcode:16;
+};
+
+
+struct brw_binding_table_pointers {
+    struct header header;
+    unsigned int vs;
+    unsigned int gs;
+    unsigned int clp;
+    unsigned int sf;
+    unsigned int wm;
+};
+
+struct brw_blend_constant_color {
+    struct header header;
+    float blend_constant_color[4];
+};
+
+struct brw_depthbuffer {
+    union header_union header;
+
+    union {
+	struct {
+	    unsigned int pitch:18;
+	    unsigned int format:3;
+	    unsigned int pad:4;
+	    unsigned int depth_offset_disable:1;
+	    unsigned int tile_walk:1;
+	    unsigned int tiled_surface:1;
+	    unsigned int pad2:1;
+	    unsigned int surface_type:3;
+	} bits;
+	unsigned int dword;
+    } dword1;
+
+    unsigned int dword2_base_addr;
+
+    union {
+	struct {
+	    unsigned int pad:1;
+	    unsigned int mipmap_layout:1;
+	    unsigned int lod:4;
+	    unsigned int width:13;
+	    unsigned int height:13;
+	} bits;
+	unsigned int dword;
+    } dword3;
+
+    union {
+	struct {
+	    unsigned int pad:12;
+	    unsigned int min_array_element:9;
+	    unsigned int depth:11;
+	} bits;
+	unsigned int dword;
+    } dword4;
+};
+
+struct brw_drawrect {
+    struct header header;
+    unsigned int xmin:16;
+    unsigned int ymin:16;
+    unsigned int xmax:16;
+    unsigned int ymax:16;
+    unsigned int xorg:16;
+    unsigned int yorg:16;
+};
+
+struct brw_global_depth_offset_clamp {
+    struct header header;
+    float depth_offset_clamp;
+};
+
+struct brw_indexbuffer {
+    union {
+	struct {
+	    unsigned int length:8;
+	    unsigned int index_format:2;
+	    unsigned int cut_index_enable:1;
+	    unsigned int pad:5;
+	    unsigned int opcode:16;
+	} bits;
+	unsigned int dword;
+    } header;
+    unsigned int buffer_start;
+    unsigned int buffer_end;
+};
+
+
+struct brw_line_stipple {
+    struct header header;
+
+    struct {
+	unsigned int pattern:16;
+	unsigned int pad:16;
+    } bits0;
+
+    struct {
+	unsigned int repeat_count:9;
+	unsigned int pad:7;
+	unsigned int inverse_repeat_count:16;
+    } bits1;
+};
+
+struct brw_pipelined_state_pointers {
+    struct header header;
+
+    struct {
+	unsigned int pad:5;
+	unsigned int offset:27;
+    } vs;
+
+    struct {
+	unsigned int enable:1;
+	unsigned int pad:4;
+	unsigned int offset:27;
+    } gs;
+
+    struct {
+	unsigned int enable:1;
+	unsigned int pad:4;
+	unsigned int offset:27;
+    } clp;
+
+    struct {
+	unsigned int pad:5;
+	unsigned int offset:27;
+    } sf;
+
+    struct {
+	unsigned int pad:5;
+	unsigned int offset:27;
+    } wm;
+
+    struct {
+	unsigned int pad:6;
+	unsigned int offset:26;
+    } cc;
+};
+
+struct brw_polygon_stipple_offset {
+    struct header header;
+
+    struct {
+	unsigned int y_offset:5;
+	unsigned int pad:3;
+	unsigned int x_offset:5;
+	unsigned int pad0:19;
+    } bits0;
+};
+
+struct brw_polygon_stipple {
+    struct header header;
+    unsigned int stipple[32];
+};
+
+struct brw_pipeline_select {
+    struct {
+	unsigned int pipeline_select:1;
+	unsigned int pad:15;
+	unsigned int opcode:16;
+    } header;
+};
+
+struct brw_pipe_control {
+    struct {
+	unsigned int length:8;
+	unsigned int notify_enable:1;
+	unsigned int pad:2;
+	unsigned int instruction_state_cache_flush_enable:1;
+	unsigned int write_cache_flush_enable:1;
+	unsigned int depth_stall_enable:1;
+	unsigned int post_sync_operation:2;
+
+	unsigned int opcode:16;
+    } header;
+
+    struct {
+	unsigned int pad:2;
+	unsigned int dest_addr_type:1;
+	unsigned int dest_addr:29;
+    } bits1;
+
+    unsigned int data0;
+    unsigned int data1;
+};
+
+
+struct brw_urb_fence {
+    struct {
+	unsigned int length:8;
+	unsigned int vs_realloc:1;
+	unsigned int gs_realloc:1;
+	unsigned int clp_realloc:1;
+	unsigned int sf_realloc:1;
+	unsigned int vfe_realloc:1;
+	unsigned int cs_realloc:1;
+	unsigned int pad:2;
+	unsigned int opcode:16;
+    } header;
+
+    struct {
+	unsigned int vs_fence:10;
+	unsigned int gs_fence:10;
+	unsigned int clp_fence:10;
+	unsigned int pad:2;
+    } bits0;
+
+    struct {
+	unsigned int sf_fence:10;
+	unsigned int vf_fence:10;
+	unsigned int cs_fence:10;
+	unsigned int pad:2;
+    } bits1;
+};
+
+struct brw_constant_buffer_state {
+    struct header header;
+
+    struct {
+	unsigned int nr_urb_entries:3;
+	unsigned int pad:1;
+	unsigned int urb_entry_size:5;
+	unsigned int pad0:23;
+    } bits0;
+};
+
+struct brw_constant_buffer {
+    struct {
+	unsigned int length:8;
+	unsigned int valid:1;
+	unsigned int pad:7;
+	unsigned int opcode:16;
+    } header;
+
+    struct {
+	unsigned int buffer_length:6;
+	unsigned int buffer_address:26;
+    } bits0;
+};
+
+struct brw_state_base_address {
+    struct header header;
+
+    struct {
+	unsigned int modify_enable:1;
+	unsigned int pad:4;
+	unsigned int general_state_address:27;
+    } bits0;
+
+    struct {
+	unsigned int modify_enable:1;
+	unsigned int pad:4;
+	unsigned int surface_state_address:27;
+    } bits1;
+
+    struct {
+	unsigned int modify_enable:1;
+	unsigned int pad:4;
+	unsigned int indirect_object_state_address:27;
+    } bits2;
+
+    struct {
+	unsigned int modify_enable:1;
+	unsigned int pad:11;
+	unsigned int general_state_upper_bound:20;
+    } bits3;
+
+    struct {
+	unsigned int modify_enable:1;
+	unsigned int pad:11;
+	unsigned int indirect_object_state_upper_bound:20;
+    } bits4;
+};
+
+struct brw_state_prefetch {
+    struct header header;
+
+    struct {
+	unsigned int prefetch_count:3;
+	unsigned int pad:3;
+	unsigned int prefetch_pointer:26;
+    } bits0;
+};
+
+struct brw_system_instruction_pointer {
+    struct header header;
+
+    struct {
+	unsigned int pad:4;
+	unsigned int system_instruction_pointer:28;
+    } bits0;
+};
+
+
+/* State structs for the various fixed function units:
+*/
+
+struct thread0 {
+    unsigned int pad0:1;
+    unsigned int grf_reg_count:3;
+    unsigned int pad1:2;
+    unsigned int kernel_start_pointer:26;
+};
+
+struct thread1 {
+    unsigned int ext_halt_exception_enable:1;
+    unsigned int sw_exception_enable:1;
+    unsigned int mask_stack_exception_enable:1;
+    unsigned int timeout_exception_enable:1;
+    unsigned int illegal_op_exception_enable:1;
+    unsigned int pad0:3;
+    unsigned int depth_coef_urb_read_offset:6;	/* WM only */
+    unsigned int pad1:2;
+    unsigned int floating_point_mode:1;
+    unsigned int thread_priority:1;
+    unsigned int binding_table_entry_count:8;
+    unsigned int pad3:5;
+    unsigned int single_program_flow:1;
+};
+
+struct thread2 {
+    unsigned int per_thread_scratch_space:4;
+    unsigned int pad0:6;
+    unsigned int scratch_space_base_pointer:22;
+};
+
+struct thread3 {
+    unsigned int dispatch_grf_start_reg:4;
+    unsigned int urb_entry_read_offset:6;
+    unsigned int pad0:1;
+    unsigned int urb_entry_read_length:6;
+    unsigned int pad1:1;
+    unsigned int const_urb_entry_read_offset:6;
+    unsigned int pad2:1;
+    unsigned int const_urb_entry_read_length:6;
+    unsigned int pad3:1;
+};
+
+struct brw_clip_unit_state {
+    struct thread0 thread0;
+    struct thread1 thread1;
+    struct thread2 thread2;
+    struct thread3 thread3;
+
+    struct {
+	unsigned int pad0:9;
+	unsigned int gs_output_stats:1; /* not always */
+	unsigned int stats_enable:1;
+	unsigned int nr_urb_entries:7;
+	unsigned int pad1:1;
+	unsigned int urb_entry_allocation_size:5;
+	unsigned int pad2:1;
+	unsigned int max_threads:6;	/* may be less */
+	unsigned int pad3:1;
+    } thread4;
+
+    struct {
+	unsigned int pad0:13;
+	unsigned int clip_mode:3;
+	unsigned int userclip_enable_flags:8;
+	unsigned int userclip_must_clip:1;
+	unsigned int pad1:1;
+	unsigned int guard_band_enable:1;
+	unsigned int viewport_z_clip_enable:1;
+	unsigned int viewport_xy_clip_enable:1;
+	unsigned int vertex_position_space:1;
+	unsigned int api_mode:1;
+	unsigned int pad2:1;
+    } clip5;
+
+    struct {
+	unsigned int pad0:5;
+	unsigned int clipper_viewport_state_ptr:27;
+    } clip6;
+
+    float viewport_xmin;
+    float viewport_xmax;
+    float viewport_ymin;
+    float viewport_ymax;
+};
+
+struct brw_cc_unit_state {
+    struct {
+	unsigned int pad0:3;
+	unsigned int bf_stencil_pass_depth_pass_op:3;
+	unsigned int bf_stencil_pass_depth_fail_op:3;
+	unsigned int bf_stencil_fail_op:3;
+	unsigned int bf_stencil_func:3;
+	unsigned int bf_stencil_enable:1;
+	unsigned int pad1:2;
+	unsigned int stencil_write_enable:1;
+	unsigned int stencil_pass_depth_pass_op:3;
+	unsigned int stencil_pass_depth_fail_op:3;
+	unsigned int stencil_fail_op:3;
+	unsigned int stencil_func:3;
+	unsigned int stencil_enable:1;
+    } cc0;
+
+    struct {
+	unsigned int bf_stencil_ref:8;
+	unsigned int stencil_write_mask:8;
+	unsigned int stencil_test_mask:8;
+	unsigned int stencil_ref:8;
+    } cc1;
+
+    struct {
+	unsigned int logicop_enable:1;
+	unsigned int pad0:10;
+	unsigned int depth_write_enable:1;
+	unsigned int depth_test_function:3;
+	unsigned int depth_test:1;
+	unsigned int bf_stencil_write_mask:8;
+	unsigned int bf_stencil_test_mask:8;
+    } cc2;
+
+    struct {
+	unsigned int pad0:8;
+	unsigned int alpha_test_func:3;
+	unsigned int alpha_test:1;
+	unsigned int blend_enable:1;
+	unsigned int ia_blend_enable:1;
+	unsigned int pad1:1;
+	unsigned int alpha_test_format:1;
+	unsigned int pad2:16;
+    } cc3;
+
+    struct {
+	unsigned int pad0:5;
+	unsigned int cc_viewport_state_offset:27;
+    } cc4;
+
+    struct {
+	unsigned int pad0:2;
+	unsigned int ia_dest_blend_factor:5;
+	unsigned int ia_src_blend_factor:5;
+	unsigned int ia_blend_function:3;
+	unsigned int statistics_enable:1;
+	unsigned int logicop_func:4;
+	unsigned int pad1:11;
+	unsigned int dither_enable:1;
+    } cc5;
+
+    struct {
+	unsigned int clamp_post_alpha_blend:1;
+	unsigned int clamp_pre_alpha_blend:1;
+	unsigned int clamp_range:2;
+	unsigned int pad0:11;
+	unsigned int y_dither_offset:2;
+	unsigned int x_dither_offset:2;
+	unsigned int dest_blend_factor:5;
+	unsigned int src_blend_factor:5;
+	unsigned int blend_function:3;
+    } cc6;
+
+    struct {
+	union {
+	    float f;
+	    unsigned char ub[4];
+	} alpha_ref;
+    } cc7;
+};
+
+struct brw_sf_unit_state {
+    struct thread0 thread0;
+    struct {
+	unsigned int pad0:7;
+	unsigned int sw_exception_enable:1;
+	unsigned int pad1:3;
+	unsigned int mask_stack_exception_enable:1;
+	unsigned int pad2:1;
+	unsigned int illegal_op_exception_enable:1;
+	unsigned int pad3:2;
+	unsigned int floating_point_mode:1;
+	unsigned int thread_priority:1;
+	unsigned int binding_table_entry_count:8;
+	unsigned int pad4:5;
+	unsigned int single_program_flow:1;
+    } sf1;
+
+    struct thread2 thread2;
+    struct thread3 thread3;
+
+    struct {
+	unsigned int pad0:10;
+	unsigned int stats_enable:1;
+	unsigned int nr_urb_entries:7;
+	unsigned int pad1:1;
+	unsigned int urb_entry_allocation_size:5;
+	unsigned int pad2:1;
+	unsigned int max_threads:6;
+	unsigned int pad3:1;
+    } thread4;
+
+    struct {
+	unsigned int front_winding:1;
+	unsigned int viewport_transform:1;
+	unsigned int pad0:3;
+	unsigned int sf_viewport_state_offset:27;
+    } sf5;
+
+    struct {
+	unsigned int pad0:9;
+	unsigned int dest_org_vbias:4;
+	unsigned int dest_org_hbias:4;
+	unsigned int scissor:1;
+	unsigned int disable_2x2_trifilter:1;
+	unsigned int disable_zero_pix_trifilter:1;
+	unsigned int point_rast_rule:2;
+	unsigned int line_endcap_aa_region_width:2;
+	unsigned int line_width:4;
+	unsigned int fast_scissor_disable:1;
+	unsigned int cull_mode:2;
+	unsigned int aa_enable:1;
+    } sf6;
+
+    struct {
+	unsigned int point_size:11;
+	unsigned int use_point_size_state:1;
+	unsigned int subpixel_precision:1;
+	unsigned int sprite_point:1;
+	unsigned int pad0:11;
+	unsigned int trifan_pv:2;
+	unsigned int linestrip_pv:2;
+	unsigned int tristrip_pv:2;
+	unsigned int line_last_pixel_enable:1;
+    } sf7;
+};
+
+struct brw_gs_unit_state {
+    struct thread0 thread0;
+    struct thread1 thread1;
+    struct thread2 thread2;
+    struct thread3 thread3;
+
+    struct {
+	unsigned int pad0:10;
+	unsigned int stats_enable:1;
+	unsigned int nr_urb_entries:7;
+	unsigned int pad1:1;
+	unsigned int urb_entry_allocation_size:5;
+	unsigned int pad2:1;
+	unsigned int max_threads:1;
+	unsigned int pad3:6;
+    } thread4;
+
+    struct {
+	unsigned int sampler_count:3;
+	unsigned int pad0:2;
+	unsigned int sampler_state_pointer:27;
+    } gs5;
+
+    struct {
+	unsigned int max_vp_index:4;
+	unsigned int pad0:26;
+	unsigned int reorder_enable:1;
+	unsigned int pad1:1;
+    } gs6;
+};
+
+struct brw_vs_unit_state {
+    struct thread0 thread0;
+    struct thread1 thread1;
+    struct thread2 thread2;
+    struct thread3 thread3;
+
+    struct {
+	unsigned int pad0:10;
+	unsigned int stats_enable:1;
+	unsigned int nr_urb_entries:7;
+	unsigned int pad1:1;
+	unsigned int urb_entry_allocation_size:5;
+	unsigned int pad2:1;
+	unsigned int max_threads:4;
+	unsigned int pad3:3;
+    } thread4;
+
+    struct {
+	unsigned int sampler_count:3;
+	unsigned int pad0:2;
+	unsigned int sampler_state_pointer:27;
+    } vs5;
+
+    struct {
+	unsigned int vs_enable:1;
+	unsigned int vert_cache_disable:1;
+	unsigned int pad0:30;
+    } vs6;
+};
+
+struct brw_wm_unit_state {
+    struct thread0 thread0;
+    struct thread1 thread1;
+    struct thread2 thread2;
+    struct thread3 thread3;
+
+    struct {
+	unsigned int stats_enable:1;
+	unsigned int pad0:1;
+	unsigned int sampler_count:3;
+	unsigned int sampler_state_pointer:27;
+    } wm4;
+
+    struct {
+	unsigned int enable_8_pix:1;
+	unsigned int enable_16_pix:1;
+	unsigned int enable_32_pix:1;
+	unsigned int pad0:7;
+	unsigned int legacy_global_depth_bias:1;
+	unsigned int line_stipple:1;
+	unsigned int depth_offset:1;
+	unsigned int polygon_stipple:1;
+	unsigned int line_aa_region_width:2;
+	unsigned int line_endcap_aa_region_width:2;
+	unsigned int early_depth_test:1;
+	unsigned int thread_dispatch_enable:1;
+	unsigned int program_uses_depth:1;
+	unsigned int program_computes_depth:1;
+	unsigned int program_uses_killpixel:1;
+	unsigned int legacy_line_rast: 1;
+	unsigned int transposed_urb_read:1;
+	unsigned int max_threads:7;
+    } wm5;
+
+    float global_depth_offset_constant;
+    float global_depth_offset_scale;
+};
+
+/* The hardware supports two different modes for border color. The
+ * default (OpenGL) mode uses floating-point color channels, while the
+ * legacy mode uses 4 bytes.
+ *
+ * More significantly, the legacy mode respects the components of the
+ * border color for channels not present in the source, (whereas the
+ * default mode will ignore the border color's alpha channel and use
+ * alpha==1 for an RGB source, for example).
+ *
+ * The legacy mode matches the semantics specified by the Render
+ * extension.
+ */
+struct brw_sampler_default_border_color {
+    float color[4];
+};
+
+struct brw_sampler_legacy_border_color {
+    uint8_t color[4];
+};
+
+struct brw_sampler_state {
+    struct {
+	unsigned int shadow_function:3;
+	unsigned int lod_bias:11;
+	unsigned int min_filter:3;
+	unsigned int mag_filter:3;
+	unsigned int mip_filter:2;
+	unsigned int base_level:5;
+	unsigned int pad:1;
+	unsigned int lod_preclamp:1;
+	unsigned int border_color_mode:1;
+	unsigned int pad0:1;
+	unsigned int disable:1;
+    } ss0;
+
+    struct {
+	unsigned int r_wrap_mode:3;
+	unsigned int t_wrap_mode:3;
+	unsigned int s_wrap_mode:3;
+	unsigned int pad:3;
+	unsigned int max_lod:10;
+	unsigned int min_lod:10;
+    } ss1;
+
+    struct {
+	unsigned int pad:5;
+	unsigned int border_color_pointer:27;
+    } ss2;
+
+    struct {
+	unsigned int pad:19;
+	unsigned int max_aniso:3;
+	unsigned int chroma_key_mode:1;
+	unsigned int chroma_key_index:2;
+	unsigned int chroma_key_enable:1;
+	unsigned int monochrome_filter_width:3;
+	unsigned int monochrome_filter_height:3;
+    } ss3;
+};
+
+struct brw_clipper_viewport {
+    float xmin;
+    float xmax;
+    float ymin;
+    float ymax;
+};
+
+struct brw_cc_viewport {
+    float min_depth;
+    float max_depth;
+};
+
+struct brw_sf_viewport {
+    struct {
+	float m00;
+	float m11;
+	float m22;
+	float m30;
+	float m31;
+	float m32;
+    } viewport;
+
+    struct {
+	short xmin;
+	short ymin;
+	short xmax;
+	short ymax;
+    } scissor;
+};
+
+/* Documented in the subsystem/shared-functions/sampler chapter...
+*/
+struct brw_surface_state {
+    struct {
+	unsigned int cube_pos_z:1;
+	unsigned int cube_neg_z:1;
+	unsigned int cube_pos_y:1;
+	unsigned int cube_neg_y:1;
+	unsigned int cube_pos_x:1;
+	unsigned int cube_neg_x:1;
+	unsigned int pad:3;
+	unsigned int render_cache_read_mode:1;
+	unsigned int mipmap_layout_mode:1;
+	unsigned int vert_line_stride_ofs:1;
+	unsigned int vert_line_stride:1;
+	unsigned int color_blend:1;
+	unsigned int writedisable_blue:1;
+	unsigned int writedisable_green:1;
+	unsigned int writedisable_red:1;
+	unsigned int writedisable_alpha:1;
+	unsigned int surface_format:9;
+	unsigned int data_return_format:1;
+	unsigned int pad0:1;
+	unsigned int surface_type:3;
+    } ss0;
+
+    struct {
+	unsigned int base_addr;
+    } ss1;
+
+    struct {
+	unsigned int render_target_rotation:2;
+	unsigned int mip_count:4;
+	unsigned int width:13;
+	unsigned int height:13;
+    } ss2;
+
+    struct {
+	unsigned int tile_walk:1;
+	unsigned int tiled_surface:1;
+	unsigned int pad:1;
+	unsigned int pitch:18;
+	unsigned int depth:11;
+    } ss3;
+
+    struct {
+	unsigned int pad:19;
+	unsigned int min_array_elt:9;
+	unsigned int min_lod:4;
+    } ss4;
+
+    struct {
+	unsigned int pad:20;
+	unsigned int y_offset:4;
+	unsigned int pad2:1;
+	unsigned int x_offset:7;
+    } ss5;
+};
+
+struct brw_vertex_buffer_state {
+    struct {
+	unsigned int pitch:11;
+	unsigned int pad:15;
+	unsigned int access_type:1;
+	unsigned int vb_index:5;
+    } vb0;
+
+    unsigned int start_addr;
+    unsigned int max_index;
+#if 1
+    unsigned int instance_data_step_rate; /* not included for sequential/random vertices? */
+#endif
+};
+
+#define BRW_VBP_MAX 17
+
+struct brw_vb_array_state {
+    struct header header;
+    struct brw_vertex_buffer_state vb[BRW_VBP_MAX];
+};
+
+struct brw_vertex_element_state {
+    struct {
+	unsigned int src_offset:11;
+	unsigned int pad:5;
+	unsigned int src_format:9;
+	unsigned int pad0:1;
+	unsigned int valid:1;
+	unsigned int vertex_buffer_index:5;
+    } ve0;
+
+    struct {
+	unsigned int dst_offset:8;
+	unsigned int pad:8;
+	unsigned int vfcomponent3:4;
+	unsigned int vfcomponent2:4;
+	unsigned int vfcomponent1:4;
+	unsigned int vfcomponent0:4;
+    } ve1;
+};
+
+#define BRW_VEP_MAX 18
+
+struct brw_vertex_element_packet {
+    struct header header;
+    struct brw_vertex_element_state ve[BRW_VEP_MAX];
+};
+
+struct brw_urb_immediate {
+    unsigned int opcode:4;
+    unsigned int offset:6;
+    unsigned int swizzle_control:2;
+    unsigned int pad:1;
+    unsigned int allocate:1;
+    unsigned int used:1;
+    unsigned int complete:1;
+    unsigned int response_length:4;
+    unsigned int msg_length:4;
+    unsigned int msg_target:4;
+    unsigned int pad1:3;
+    unsigned int end_of_thread:1;
+};
+
+/* Instruction format for the execution units: */
+
+struct brw_instruction {
+    struct {
+	unsigned int opcode:7;
+	unsigned int pad:1;
+	unsigned int access_mode:1;
+	unsigned int mask_control:1;
+	unsigned int dependency_control:2;
+	unsigned int compression_control:2;
+	unsigned int thread_control:2;
+	unsigned int predicate_control:4;
+	unsigned int predicate_inverse:1;
+	unsigned int execution_size:3;
+	unsigned int destreg__conditonalmod:4; /* destreg - send, conditionalmod - others */
+	unsigned int pad0:2;
+	unsigned int debug_control:1;
+	unsigned int saturate:1;
+    } header;
+
+    union {
+	struct {
+	    unsigned int dest_reg_file:2;
+	    unsigned int dest_reg_type:3;
+	    unsigned int src0_reg_file:2;
+	    unsigned int src0_reg_type:3;
+	    unsigned int src1_reg_file:2;
+	    unsigned int src1_reg_type:3;
+	    unsigned int pad:1;
+	    unsigned int dest_subreg_nr:5;
+	    unsigned int dest_reg_nr:8;
+	    unsigned int dest_horiz_stride:2;
+	    unsigned int dest_address_mode:1;
+	} da1;
+
+	struct {
+	    unsigned int dest_reg_file:2;
+	    unsigned int dest_reg_type:3;
+	    unsigned int src0_reg_file:2;
+	    unsigned int src0_reg_type:3;
+	    unsigned int pad:6;
+	    int dest_indirect_offset:10;	/* offset against the deref'd address reg */
+	    unsigned int dest_subreg_nr:3; /* subnr for the address reg a0.x */
+	    unsigned int dest_horiz_stride:2;
+	    unsigned int dest_address_mode:1;
+	} ia1;
+
+	struct {
+	    unsigned int dest_reg_file:2;
+	    unsigned int dest_reg_type:3;
+	    unsigned int src0_reg_file:2;
+	    unsigned int src0_reg_type:3;
+	    unsigned int src1_reg_file:2;
+	    unsigned int src1_reg_type:3;
+	    unsigned int pad0:1;
+	    unsigned int dest_writemask:4;
+	    unsigned int dest_subreg_nr:1;
+	    unsigned int dest_reg_nr:8;
+	    unsigned int pad1:2;
+	    unsigned int dest_address_mode:1;
+	} da16;
+
+	struct {
+	    unsigned int dest_reg_file:2;
+	    unsigned int dest_reg_type:3;
+	    unsigned int src0_reg_file:2;
+	    unsigned int src0_reg_type:3;
+	    unsigned int pad0:6;
+	    unsigned int dest_writemask:4;
+	    int dest_indirect_offset:6;
+	    unsigned int dest_subreg_nr:3;
+	    unsigned int pad1:2;
+	    unsigned int dest_address_mode:1;
+	} ia16;
+    } bits1;
+
+
+    union {
+	struct {
+	    unsigned int src0_subreg_nr:5;
+	    unsigned int src0_reg_nr:8;
+	    unsigned int src0_abs:1;
+	    unsigned int src0_negate:1;
+	    unsigned int src0_address_mode:1;
+	    unsigned int src0_horiz_stride:2;
+	    unsigned int src0_width:3;
+	    unsigned int src0_vert_stride:4;
+	    unsigned int flag_reg_nr:1;
+	    unsigned int pad:6;
+	} da1;
+
+	struct {
+	    int src0_indirect_offset:10;
+	    unsigned int src0_subreg_nr:3;
+	    unsigned int src0_abs:1;
+	    unsigned int src0_negate:1;
+	    unsigned int src0_address_mode:1;
+	    unsigned int src0_horiz_stride:2;
+	    unsigned int src0_width:3;
+	    unsigned int src0_vert_stride:4;
+	    unsigned int flag_reg_nr:1;
+	    unsigned int pad:6;
+	} ia1;
+
+	struct {
+	    unsigned int src0_swz_x:2;
+	    unsigned int src0_swz_y:2;
+	    unsigned int src0_subreg_nr:1;
+	    unsigned int src0_reg_nr:8;
+	    unsigned int src0_abs:1;
+	    unsigned int src0_negate:1;
+	    unsigned int src0_address_mode:1;
+	    unsigned int src0_swz_z:2;
+	    unsigned int src0_swz_w:2;
+	    unsigned int pad0:1;
+	    unsigned int src0_vert_stride:4;
+	    unsigned int flag_reg_nr:1;
+	    unsigned int pad1:6;
+	} da16;
+
+	struct {
+	    unsigned int src0_swz_x:2;
+	    unsigned int src0_swz_y:2;
+	    int src0_indirect_offset:6;
+	    unsigned int src0_subreg_nr:3;
+	    unsigned int src0_abs:1;
+	    unsigned int src0_negate:1;
+	    unsigned int src0_address_mode:1;
+	    unsigned int src0_swz_z:2;
+	    unsigned int src0_swz_w:2;
+	    unsigned int pad0:1;
+	    unsigned int src0_vert_stride:4;
+	    unsigned int flag_reg_nr:1;
+	    unsigned int pad1:6;
+	} ia16;
+
+    } bits2;
+
+    union {
+	struct {
+	    unsigned int src1_subreg_nr:5;
+	    unsigned int src1_reg_nr:8;
+	    unsigned int src1_abs:1;
+	    unsigned int src1_negate:1;
+	    unsigned int pad:1;
+	    unsigned int src1_horiz_stride:2;
+	    unsigned int src1_width:3;
+	    unsigned int src1_vert_stride:4;
+	    unsigned int pad0:7;
+	} da1;
+
+	struct {
+	    unsigned int src1_swz_x:2;
+	    unsigned int src1_swz_y:2;
+	    unsigned int src1_subreg_nr:1;
+	    unsigned int src1_reg_nr:8;
+	    unsigned int src1_abs:1;
+	    unsigned int src1_negate:1;
+	    unsigned int pad0:1;
+	    unsigned int src1_swz_z:2;
+	    unsigned int src1_swz_w:2;
+	    unsigned int pad1:1;
+	    unsigned int src1_vert_stride:4;
+	    unsigned int pad2:7;
+	} da16;
+
+	struct {
+	    int src1_indirect_offset:10;
+	    unsigned int src1_subreg_nr:3;
+	    unsigned int src1_abs:1;
+	    unsigned int src1_negate:1;
+	    unsigned int pad0:1;
+	    unsigned int src1_horiz_stride:2;
+	    unsigned int src1_width:3;
+	    unsigned int src1_vert_stride:4;
+	    unsigned int flag_reg_nr:1;
+	    unsigned int pad1:6;
+	} ia1;
+
+	struct {
+	    unsigned int src1_swz_x:2;
+	    unsigned int src1_swz_y:2;
+	    int src1_indirect_offset:6;
+	    unsigned int src1_subreg_nr:3;
+	    unsigned int src1_abs:1;
+	    unsigned int src1_negate:1;
+	    unsigned int pad0:1;
+	    unsigned int src1_swz_z:2;
+	    unsigned int src1_swz_w:2;
+	    unsigned int pad1:1;
+	    unsigned int src1_vert_stride:4;
+	    unsigned int flag_reg_nr:1;
+	    unsigned int pad2:6;
+	} ia16;
+
+	struct {
+	    int jump_count:16;	/* note: signed */
+	    unsigned int pop_count:4;
+	    unsigned int pad0:12;
+	} if_else;
+
+	struct {
+	    unsigned int function:4;
+	    unsigned int int_type:1;
+	    unsigned int precision:1;
+	    unsigned int saturate:1;
+	    unsigned int data_type:1;
+	    unsigned int pad0:8;
+	    unsigned int response_length:4;
+	    unsigned int msg_length:4;
+	    unsigned int msg_target:4;
+	    unsigned int pad1:3;
+	    unsigned int end_of_thread:1;
+	} math;
+
+	struct {
+	    unsigned int binding_table_index:8;
+	    unsigned int sampler:4;
+	    unsigned int return_format:2;
+	    unsigned int msg_type:2;
+	    unsigned int response_length:4;
+	    unsigned int msg_length:4;
+	    unsigned int msg_target:4;
+	    unsigned int pad1:3;
+	    unsigned int end_of_thread:1;
+	} sampler;
+
+	struct {
+	    uint32_t binding_table_index:8;
+	    uint32_t sampler:4;
+	    uint32_t msg_type:4;
+	    uint32_t response_length:4;
+	    uint32_t msg_length:4;
+	    uint32_t msg_target:4;
+	    uint32_t pad1:3;
+	    uint32_t end_of_thread:1;
+	} sampler_g4x;
+
+	struct brw_urb_immediate urb;
+
+	struct {
+	    unsigned int binding_table_index:8;
+	    unsigned int msg_control:4;
+	    unsigned int msg_type:2;
+	    unsigned int target_cache:2;
+	    unsigned int response_length:4;
+	    unsigned int msg_length:4;
+	    unsigned int msg_target:4;
+	    unsigned int pad1:3;
+	    unsigned int end_of_thread:1;
+	} dp_read;
+
+	struct {
+	    unsigned int binding_table_index:8;
+	    unsigned int msg_control:3;
+	    unsigned int pixel_scoreboard_clear:1;
+	    unsigned int msg_type:3;
+	    unsigned int send_commit_msg:1;
+	    unsigned int response_length:4;
+	    unsigned int msg_length:4;
+	    unsigned int msg_target:4;
+	    unsigned int pad1:3;
+	    unsigned int end_of_thread:1;
+	} dp_write;
+
+	struct {
+	    unsigned int pad:16;
+	    unsigned int response_length:4;
+	    unsigned int msg_length:4;
+	    unsigned int msg_target:4;
+	    unsigned int pad1:3;
+	    unsigned int end_of_thread:1;
+	} generic;
+
+	uint32_t ud;
+	int32_t d;
+    } bits3;
+};
+
+/* media pipeline */
+
+struct brw_vfe_state {
+    struct {
+	unsigned int per_thread_scratch_space:4;
+	unsigned int pad3:3;
+	unsigned int extend_vfe_state_present:1;
+	unsigned int pad2:2;
+	unsigned int scratch_base:22;
+    } vfe0;
+
+    struct {
+	unsigned int debug_counter_control:2;
+	unsigned int children_present:1;
+	unsigned int vfe_mode:4;
+	unsigned int pad2:2;
+	unsigned int num_urb_entries:7;
+	unsigned int urb_entry_alloc_size:9;
+	unsigned int max_threads:7;
+    } vfe1;
+
+    struct {
+	unsigned int pad4:4;
+	unsigned int interface_descriptor_base:28;
+    } vfe2;
+};
+
+struct brw_vld_state {
+    struct {
+	unsigned int pad6:6;
+	unsigned int scan_order:1;
+	unsigned int intra_vlc_format:1;
+	unsigned int quantizer_scale_type:1;
+	unsigned int concealment_motion_vector:1;
+	unsigned int frame_predict_frame_dct:1;
+	unsigned int top_field_first:1;
+	unsigned int picture_structure:2;
+	unsigned int intra_dc_precision:2;
+	unsigned int f_code_0_0:4;
+	unsigned int f_code_0_1:4;
+	unsigned int f_code_1_0:4;
+	unsigned int f_code_1_1:4;
+    } vld0;
+
+    struct {
+	unsigned int pad2:9;
+	unsigned int picture_coding_type:2;
+	unsigned int pad:21;
+    } vld1;
+
+    struct {
+	unsigned int index_0:4;
+	unsigned int index_1:4;
+	unsigned int index_2:4;
+	unsigned int index_3:4;
+	unsigned int index_4:4;
+	unsigned int index_5:4;
+	unsigned int index_6:4;
+	unsigned int index_7:4;
+    } desc_remap_table0;
+
+    struct {
+	unsigned int index_8:4;
+	unsigned int index_9:4;
+	unsigned int index_10:4;
+	unsigned int index_11:4;
+	unsigned int index_12:4;
+	unsigned int index_13:4;
+	unsigned int index_14:4;
+	unsigned int index_15:4;
+    } desc_remap_table1;
+};
+
+struct brw_interface_descriptor {
+    struct {
+	unsigned int grf_reg_blocks:4;
+	unsigned int pad:2;
+	unsigned int kernel_start_pointer:26;
+    } desc0;
+
+    struct {
+	unsigned int pad:7;
+	unsigned int software_exception:1;
+	unsigned int pad2:3;
+	unsigned int maskstack_exception:1;
+	unsigned int pad3:1;
+	unsigned int illegal_opcode_exception:1;
+	unsigned int pad4:2;
+	unsigned int floating_point_mode:1;
+	unsigned int thread_priority:1;
+	unsigned int single_program_flow:1;
+	unsigned int pad5:1;
+	unsigned int const_urb_entry_read_offset:6;
+	unsigned int const_urb_entry_read_len:6;
+    } desc1;
+
+    struct {
+	unsigned int pad:2;
+	unsigned int sampler_count:3;
+	unsigned int sampler_state_pointer:27;
+    } desc2;
+
+    struct {
+	unsigned int binding_table_entry_count:5;
+	unsigned int binding_table_pointer:27;
+    } desc3;
+};
+
+#endif
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-command-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-command-private.h
new file mode 100644
index 0000000..a93ac12
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-command-private.h
@@ -0,0 +1,909 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef CAIRO_DRM_INTEL_COMMAND_PRIVATE_H
+#define CAIRO_DRM_INTEL_COMMAND_PRIVATE_H
+
+#include "cairo-types-private.h"
+
+#define CMD_MI				(0x0 << 29)
+#define CMD_misc			(0x1 << 29)
+#define CMD_2D				(0x2 << 29)
+#define CMD_3D				(0x3 << 29)
+/* 4-7 reserved */
+
+#define MI_NOOP				(CMD_MI | 0)
+/* Batch */
+#define MI_BATCH_BUFFER		        (CMD_MI | (0x30 << 23) | 1)
+#define MI_BATCH_BUFFER_START	        (CMD_MI | (0x31 << 23))
+#define MI_BATCH_BUFFER_END		(CMD_MI | (0x0a << 23))
+#define MI_BATCH_NON_SECURE		(1)
+#define MI_BATCH_NON_SECURE_I965	(1 << 8)
+/* Flush */
+#define MI_FLUSH			(CMD_MI | (0x04 << 23))
+#define MI_WRITE_DIRTY_STATE		(1<<4)
+#define MI_END_SCENE			(1<<3)
+#define MI_GLOBAL_SNAPSHOT_COUNT_RESET	(1<<3)
+#define MI_INHIBIT_RENDER_CACHE_FLUSH	(1<<2)
+#define MI_STATE_INSTRUCTION_CACHE_FLUSH (1<<1)
+#define MI_INVALIDATE_MAP_CACHE		(1<<0)
+
+#define PRIM3D				(CMD_3D | (0x1f<<24))
+#define PRIM3D_TRILIST			(PRIM3D | (0x0<<18))
+#define PRIM3D_TRISTRIP			(PRIM3D | (0x1<<18))
+#define PRIM3D_TRISTRIP_RVRSE		(PRIM3D | (0x2<<18))
+#define PRIM3D_TRIFAN			(PRIM3D | (0x3<<18))
+#define PRIM3D_POLY			(PRIM3D | (0x4<<18))
+#define PRIM3D_LINELIST			(PRIM3D | (0x5<<18))
+#define PRIM3D_LINESTRIP		(PRIM3D | (0x6<<18))
+#define PRIM3D_RECTLIST			(PRIM3D | (0x7<<18))
+#define PRIM3D_POINTLIST		(PRIM3D | (0x8<<18))
+#define PRIM3D_DIB			(PRIM3D | (0x9<<18))
+#define PRIM3D_CLEAR_RECT		(PRIM3D | (0xa<<18))
+#define PRIM3D_ZONE_INIT		(PRIM3D | (0xd<<18))
+#define PRIM3D_MASK			(0x1f<<18)
+#define PRIM3D_INDIRECT_SEQUENTIAL	((1<<23) | (0<<17))
+#define PRIM3D_INDIRECT_ELTS		((1<<23) | (1<<17))
+
+/* p137 */
+#define _3DSTATE_AA_CMD			(CMD_3D | (0x06<<24))
+#define AA_LINE_ECAAR_WIDTH_ENABLE	(1<<16)
+#define AA_LINE_ECAAR_WIDTH_0_5		0
+#define AA_LINE_ECAAR_WIDTH_1_0		(1<<14)
+#define AA_LINE_ECAAR_WIDTH_2_0		(2<<14)
+#define AA_LINE_ECAAR_WIDTH_4_0		(3<<14)
+#define AA_LINE_REGION_WIDTH_ENABLE	(1<<8)
+#define AA_LINE_REGION_WIDTH_0_5	0
+#define AA_LINE_REGION_WIDTH_1_0	(1<<6)
+#define AA_LINE_REGION_WIDTH_2_0	(2<<6)
+#define AA_LINE_REGION_WIDTH_4_0	(3<<6)
+
+/* 3DSTATE_BACKFACE_STENCIL_OPS, p138*/
+#define _3DSTATE_BACKFACE_STENCIL_OPS    (CMD_3D | (0x8<<24))
+#define BFO_ENABLE_STENCIL_REF          (1<<23)
+#define BFO_STENCIL_REF_SHIFT           15
+#define BFO_STENCIL_REF_MASK            (0xff<<15)
+#define BFO_ENABLE_STENCIL_FUNCS        (1<<14)
+#define BFO_STENCIL_TEST_SHIFT          11
+#define BFO_STENCIL_TEST_MASK           (0x7<<11)
+#define BFO_STENCIL_FAIL_SHIFT          8
+#define BFO_STENCIL_FAIL_MASK           (0x7<<8)
+#define BFO_STENCIL_PASS_Z_FAIL_SHIFT   5
+#define BFO_STENCIL_PASS_Z_FAIL_MASK    (0x7<<5)
+#define BFO_STENCIL_PASS_Z_PASS_SHIFT   2
+#define BFO_STENCIL_PASS_Z_PASS_MASK    (0x7<<2)
+#define BFO_ENABLE_STENCIL_TWO_SIDE     (1<<1)
+#define BFO_STENCIL_TWO_SIDE            (1<<0)
+
+/* 3DSTATE_BACKFACE_STENCIL_MASKS, p140 */
+#define _3DSTATE_BACKFACE_STENCIL_MASKS    (CMD_3D | (0x9<<24))
+#define BFM_ENABLE_STENCIL_TEST_MASK      (1<<17)
+#define BFM_ENABLE_STENCIL_WRITE_MASK     (1<<16)
+#define BFM_STENCIL_TEST_MASK_SHIFT       8
+#define BFM_STENCIL_TEST_MASK_MASK        (0xff<<8)
+#define BFM_STENCIL_WRITE_MASK_SHIFT      0
+#define BFM_STENCIL_WRITE_MASK_MASK       (0xff<<0)
+
+/* 3DSTATE_BIN_CONTROL p141 */
+
+/* p143 */
+#define _3DSTATE_BUF_INFO_CMD	(CMD_3D | (0x1d<<24) | (0x8e<<16) | 1)
+/* Dword 1 */
+#define BUF_3D_ID_COLOR_BACK	(0x3<<24)
+#define BUF_3D_ID_DEPTH		(0x7<<24)
+#define BUF_3D_USE_FENCE	(1<<23)
+#define BUF_3D_TILED_SURFACE	(1<<22)
+#define BUF_3D_TILE_WALK_X	0
+#define BUF_3D_TILE_WALK_Y	(1<<21)
+#define BUF_3D_PITCH(x)         (x)
+/* Dword 2 */
+#define BUF_3D_ADDR(x)		((x) & ~0x3)
+
+/* 3DSTATE_CHROMA_KEY */
+
+/* 3DSTATE_CLEAR_PARAMETERS, p150 */
+#define _3DSTATE_CLEAR_PARAMETERS   (CMD_3D | (0x1d<<24) | (0x9c<<16) | 5)
+/* Dword 1 */
+#define CLEARPARAM_CLEAR_RECT	    (1 << 16)
+#define CLEARPARAM_ZONE_INIT	    (0 << 16)
+#define CLEARPARAM_WRITE_COLOR	    (1 << 2)
+#define CLEARPARAM_WRITE_DEPTH	    (1 << 1)
+#define CLEARPARAM_WRITE_STENCIL    (1 << 0)
+
+/* 3DSTATE_CONSTANT_BLEND_COLOR, p153 */
+#define _3DSTATE_CONST_BLEND_COLOR_CMD	(CMD_3D | (0x1d<<24) | (0x88<<16))
+
+/* 3DSTATE_COORD_SET_BINDINGS, p154 */
+#define _3DSTATE_COORD_SET_BINDINGS      (CMD_3D | (0x16<<24))
+#define CSB_TCB(iunit, eunit)           ((eunit)<<(iunit*3))
+
+/* p156 */
+#define _3DSTATE_DFLT_DIFFUSE_CMD	(CMD_3D | (0x1d<<24) | (0x99<<16))
+
+/* p157 */
+#define _3DSTATE_DFLT_SPEC_CMD		(CMD_3D | (0x1d<<24) | (0x9a<<16))
+
+/* p158 */
+#define _3DSTATE_DFLT_Z_CMD		(CMD_3D | (0x1d<<24) | (0x98<<16))
+
+/* 3DSTATE_DEPTH_OFFSET_SCALE, p159 */
+#define _3DSTATE_DEPTH_OFFSET_SCALE       (CMD_3D | (0x1d<<24) | (0x97<<16))
+/* scale in dword 1 */
+
+/* The depth subrectangle is not supported, but must be disabled. */
+/* 3DSTATE_DEPTH_SUBRECT_DISABLE, p160 */
+#define _3DSTATE_DEPTH_SUBRECT_DISABLE	(CMD_3D | (0x1c<<24) | (0x11<<19) | (1 << 1) | (0 << 0))
+
+/* p161 */
+#define _3DSTATE_DST_BUF_VARS_CMD	(CMD_3D | (0x1d<<24) | (0x85<<16))
+/* Dword 1 */
+#define TEX_DEFAULT_COLOR_OGL           (0<<30)
+#define TEX_DEFAULT_COLOR_D3D           (1<<30)
+#define ZR_EARLY_DEPTH                  (1<<29)
+#define LOD_PRECLAMP_OGL                (1<<28)
+#define LOD_PRECLAMP_D3D                (0<<28)
+#define DITHER_FULL_ALWAYS              (0<<26)
+#define DITHER_FULL_ON_FB_BLEND         (1<<26)
+#define DITHER_CLAMPED_ALWAYS           (2<<26)
+#define LINEAR_GAMMA_BLEND_32BPP        (1<<25)
+#define DEBUG_DISABLE_ENH_DITHER        (1<<24)
+#define DSTORG_HORT_BIAS(x)		((x)<<20)
+#define DSTORG_VERT_BIAS(x)		((x)<<16)
+#define COLOR_4_2_2_CHNL_WRT_ALL	0
+#define COLOR_4_2_2_CHNL_WRT_Y		(1<<12)
+#define COLOR_4_2_2_CHNL_WRT_CR		(2<<12)
+#define COLOR_4_2_2_CHNL_WRT_CB		(3<<12)
+#define COLOR_4_2_2_CHNL_WRT_CRCB	(4<<12)
+#define COLR_BUF_8BIT			0
+#define COLR_BUF_RGB555			(1<<8)
+#define COLR_BUF_RGB565			(2<<8)
+#define COLR_BUF_ARGB8888		(3<<8)
+#define COLR_BUF_ARGB4444		(8<<8)
+#define COLR_BUF_ARGB1555		(9<<8)
+#define COLR_BUF_ARGB2AAA		(0xa<<8)
+#define DEPTH_FRMT_16_FIXED		0
+#define DEPTH_FRMT_16_FLOAT		(1<<2)
+#define DEPTH_FRMT_24_FIXED_8_OTHER	(2<<2)
+#define VERT_LINE_STRIDE_1		(1<<1)
+#define VERT_LINE_STRIDE_0		(0<<1)
+#define VERT_LINE_STRIDE_OFS_1		1
+#define VERT_LINE_STRIDE_OFS_0		0
+
+/* p166 */
+#define _3DSTATE_DRAW_RECT_CMD		(CMD_3D|(0x1d<<24)|(0x80<<16)|3)
+/* Dword 1 */
+#define DRAW_RECT_DIS_DEPTH_OFS		(1<<30)
+#define DRAW_DITHER_OFS_X(x)		((x)<<26)
+#define DRAW_DITHER_OFS_Y(x)		((x)<<24)
+/* Dword 2 */
+#define DRAW_YMIN(x)			((x)<<16)
+#define DRAW_XMIN(x)			(x)
+/* Dword 3 */
+#define DRAW_YMAX(x)			((x-1)<<16)
+#define DRAW_XMAX(x)			(x-1)
+/* Dword 4 */
+#define DRAW_YORG(x)			((x)<<16)
+#define DRAW_XORG(x)			(x)
+
+/* 3DSTATE_FILTER_COEFFICIENTS_4X4, p170 */
+
+/* 3DSTATE_FILTER_COEFFICIENTS_6X5, p172 */
+
+/* _3DSTATE_FOG_COLOR, p173 */
+#define _3DSTATE_FOG_COLOR_CMD		(CMD_3D|(0x15<<24))
+#define FOG_COLOR_RED(x)		((x)<<16)
+#define FOG_COLOR_GREEN(x)		((x)<<8)
+#define FOG_COLOR_BLUE(x)		(x)
+
+/* _3DSTATE_FOG_MODE, p174 */
+#define _3DSTATE_FOG_MODE_CMD		(CMD_3D|(0x1d<<24)|(0x89<<16)|2)
+/* Dword 1 */
+#define FMC1_FOGFUNC_MODIFY_ENABLE	(1<<31)
+#define FMC1_FOGFUNC_VERTEX		(0<<28)
+#define FMC1_FOGFUNC_PIXEL_EXP		(1<<28)
+#define FMC1_FOGFUNC_PIXEL_EXP2		(2<<28)
+#define FMC1_FOGFUNC_PIXEL_LINEAR	(3<<28)
+#define FMC1_FOGFUNC_MASK		(3<<28)
+#define FMC1_FOGINDEX_MODIFY_ENABLE     (1<<27)
+#define FMC1_FOGINDEX_Z		        (0<<25)
+#define FMC1_FOGINDEX_W			(1<<25)
+#define FMC1_C1_C2_MODIFY_ENABLE	(1<<24)
+#define FMC1_DENSITY_MODIFY_ENABLE	(1<<23)
+#define FMC1_C1_ONE		        (1<<13)
+#define FMC1_C1_MASK		        (0xffff<<4)
+/* Dword 2 */
+#define FMC2_C2_ONE		        (1<<16)
+/* Dword 3 */
+#define FMC3_D_ONE			(1<<16)
+
+/* _3DSTATE_INDEPENDENT_ALPHA_BLEND, p177 */
+#define _3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD	(CMD_3D|(0x0b<<24))
+#define IAB_MODIFY_ENABLE	        (1<<23)
+#define IAB_ENABLE		        (1<<22)
+#define IAB_MODIFY_FUNC			(1<<21)
+#define IAB_FUNC_SHIFT			16
+#define IAB_MODIFY_SRC_FACTOR		(1<<11)
+#define IAB_SRC_FACTOR_SHIFT		6
+#define IAB_SRC_FACTOR_MASK		(BLENDFACT_MASK<<6)
+#define IAB_MODIFY_DST_FACTOR	        (1<<5)
+#define IAB_DST_FACTOR_SHIFT		0
+#define IAB_DST_FACTOR_MASK		(BLENDFACT_MASK<<0)
+
+#define BLENDFACT_ZERO			0x01
+#define BLENDFACT_ONE			0x02
+#define BLENDFACT_SRC_COLR		0x03
+#define BLENDFACT_INV_SRC_COLR		0x04
+#define BLENDFACT_SRC_ALPHA		0x05
+#define BLENDFACT_INV_SRC_ALPHA		0x06
+#define BLENDFACT_DST_ALPHA		0x07
+#define BLENDFACT_INV_DST_ALPHA		0x08
+#define BLENDFACT_DST_COLR		0x09
+#define BLENDFACT_INV_DST_COLR		0x0a
+#define BLENDFACT_SRC_ALPHA_SATURATE	0x0b
+#define BLENDFACT_CONST_COLOR		0x0c
+#define BLENDFACT_INV_CONST_COLOR	0x0d
+#define BLENDFACT_CONST_ALPHA		0x0e
+#define BLENDFACT_INV_CONST_ALPHA	0x0f
+#define BLENDFACT_MASK			0x0f
+
+#define BLENDFUNC_ADD			0x0
+#define BLENDFUNC_SUBTRACT		0x1
+#define BLENDFUNC_REVERSE_SUBTRACT	0x2
+#define BLENDFUNC_MIN			0x3
+#define BLENDFUNC_MAX			0x4
+#define BLENDFUNC_MASK			0x7
+
+/* 3DSTATE_LOAD_INDIRECT, p180 */
+
+#define _3DSTATE_LOAD_INDIRECT	        (CMD_3D|(0x1d<<24)|(0x7<<16))
+#define LI0_STATE_STATIC_INDIRECT       (0x01<<8)
+#define LI0_STATE_DYNAMIC_INDIRECT      (0x02<<8)
+#define LI0_STATE_SAMPLER               (0x04<<8)
+#define LI0_STATE_MAP                   (0x08<<8)
+#define LI0_STATE_PROGRAM               (0x10<<8)
+#define LI0_STATE_CONSTANTS             (0x20<<8)
+
+#define SIS0_BUFFER_ADDRESS(x)          ((x)&~0x3)
+#define SIS0_FORCE_LOAD                 (1<<1)
+#define SIS0_BUFFER_VALID               (1<<0)
+#define SIS1_BUFFER_LENGTH(x)           ((x)&0xff)
+
+#define DIS0_BUFFER_ADDRESS(x)          ((x)&~0x3)
+#define DIS0_BUFFER_RESET               (1<<1)
+#define DIS0_BUFFER_VALID               (1<<0)
+
+#define SSB0_BUFFER_ADDRESS(x)          ((x)&~0x3)
+#define SSB0_FORCE_LOAD                 (1<<1)
+#define SSB0_BUFFER_VALID               (1<<0)
+#define SSB1_BUFFER_LENGTH(x)           ((x)&0xff)
+
+#define MSB0_BUFFER_ADDRESS(x)          ((x)&~0x3)
+#define MSB0_FORCE_LOAD                 (1<<1)
+#define MSB0_BUFFER_VALID               (1<<0)
+#define MSB1_BUFFER_LENGTH(x)           ((x)&0xff)
+
+#define PSP0_BUFFER_ADDRESS(x)          ((x)&~0x3)
+#define PSP0_FORCE_LOAD                 (1<<1)
+#define PSP0_BUFFER_VALID               (1<<0)
+#define PSP1_BUFFER_LENGTH(x)           ((x)&0xff)
+
+#define PSC0_BUFFER_ADDRESS(x)          ((x)&~0x3)
+#define PSC0_FORCE_LOAD                 (1<<1)
+#define PSC0_BUFFER_VALID               (1<<0)
+#define PSC1_BUFFER_LENGTH(x)           ((x)&0xff)
+
+/* _3DSTATE_RASTERIZATION_RULES */
+#define _3DSTATE_RASTER_RULES_CMD	(CMD_3D|(0x07<<24))
+#define ENABLE_POINT_RASTER_RULE	(1<<15)
+#define OGL_POINT_RASTER_RULE		(1<<13)
+#define ENABLE_TEXKILL_3D_4D            (1<<10)
+#define TEXKILL_3D                      (0<<9)
+#define TEXKILL_4D                      (1<<9)
+#define ENABLE_LINE_STRIP_PROVOKE_VRTX	(1<<8)
+#define ENABLE_TRI_FAN_PROVOKE_VRTX	(1<<5)
+#define LINE_STRIP_PROVOKE_VRTX(x)	((x)<<6)
+#define TRI_FAN_PROVOKE_VRTX(x)		((x)<<3)
+
+/* _3DSTATE_SCISSOR_ENABLE, p256 */
+#define _3DSTATE_SCISSOR_ENABLE_CMD	(CMD_3D|(0x1c<<24)|(0x10<<19))
+#define ENABLE_SCISSOR_RECT		((1<<1) | 1)
+#define DISABLE_SCISSOR_RECT		(1<<1)
+
+/* _3DSTATE_SCISSOR_RECTANGLE_0, p257 */
+#define _3DSTATE_SCISSOR_RECT_0_CMD	(CMD_3D|(0x1d<<24)|(0x81<<16)|1)
+/* Dword 1 */
+#define SCISSOR_RECT_0_YMIN(x)		((x)<<16)
+#define SCISSOR_RECT_0_XMIN(x)		(x)
+/* Dword 2 */
+#define SCISSOR_RECT_0_YMAX(x)		((x)<<16)
+#define SCISSOR_RECT_0_XMAX(x)		(x)
+
+/* p189 */
+#define _3DSTATE_LOAD_STATE_IMMEDIATE_1   (CMD_3D | (0x1d<<24) | (0x04<<16))
+#define I1_LOAD_S(n)                      (1<<(4+n))
+
+#define S0_VB_OFFSET_MASK              0xffffffc
+#define S0_AUTO_CACHE_INV_DISABLE      (1<<0)
+
+#define S1_VERTEX_WIDTH_SHIFT          24
+#define S1_VERTEX_WIDTH_MASK           (0x3f<<24)
+#define S1_VERTEX_PITCH_SHIFT          16
+#define S1_VERTEX_PITCH_MASK           (0x3f<<16)
+
+#define TEXCOORDFMT_2D                 0x0
+#define TEXCOORDFMT_3D                 0x1
+#define TEXCOORDFMT_4D                 0x2
+#define TEXCOORDFMT_1D                 0x3
+#define TEXCOORDFMT_2D_16              0x4
+#define TEXCOORDFMT_4D_16              0x5
+#define TEXCOORDFMT_NOT_PRESENT        0xf
+#define S2_TEXCOORD_FMT0_MASK            0xf
+#define S2_TEXCOORD_FMT1_SHIFT           4
+#define S2_TEXCOORD_FMT(unit, type)    ((type)<<(unit*4))
+#define S2_TEXCOORD_NONE               (~0U)
+
+#define TEXCOORD_WRAP_SHORTEST_TCX	8
+#define TEXCOORD_WRAP_SHORTEST_TCY	4
+#define TEXCOORD_WRAP_SHORTEST_TCZ	2
+#define TEXCOORD_PERSPECTIVE_DISABLE	1
+
+#define S3_WRAP_SHORTEST_TCX(unit)	(TEXCOORD_WRAP_SHORTEST_TCX << ((unit) * 4))
+#define S3_WRAP_SHORTEST_TCY(unit)	(TEXCOORD_WRAP_SHORTEST_TCY << ((unit) * 4))
+#define S3_WRAP_SHORTEST_TCZ(unit)	(TEXCOORD_WRAP_SHORTEST_TCZ << ((unit) * 4))
+#define S3_PERSPECTIVE_DISABLE(unit)	(TEXCOORD_PERSPECTIVE_DISABLE << ((unit) * 4))
+
+/* S3 not interesting */
+
+#define S4_POINT_WIDTH_SHIFT           23
+#define S4_POINT_WIDTH_MASK            (0x1ff<<23)
+#define S4_LINE_WIDTH_SHIFT            19
+#define S4_LINE_WIDTH_ONE              (0x2<<19)
+#define S4_LINE_WIDTH_MASK             (0xf<<19)
+#define S4_FLATSHADE_ALPHA             (1<<18)
+#define S4_FLATSHADE_FOG               (1<<17)
+#define S4_FLATSHADE_SPECULAR          (1<<16)
+#define S4_FLATSHADE_COLOR             (1<<15)
+#define S4_CULLMODE_BOTH	       (0<<13)
+#define S4_CULLMODE_NONE	       (1<<13)
+#define S4_CULLMODE_CW		       (2<<13)
+#define S4_CULLMODE_CCW		       (3<<13)
+#define S4_CULLMODE_MASK	       (3<<13)
+#define S4_VFMT_POINT_WIDTH            (1<<12)
+#define S4_VFMT_SPEC_FOG               (1<<11)
+#define S4_VFMT_COLOR                  (1<<10)
+#define S4_VFMT_DEPTH_OFFSET           (1<<9)
+#define S4_VFMT_XYZ		       (1<<6)
+#define S4_VFMT_XYZW		       (2<<6)
+#define S4_VFMT_XY		       (3<<6)
+#define S4_VFMT_XYW		       (4<<6)
+#define S4_VFMT_XYZW_MASK              (7<<6)
+#define S4_FORCE_DEFAULT_DIFFUSE       (1<<5)
+#define S4_FORCE_DEFAULT_SPECULAR      (1<<4)
+#define S4_LOCAL_DEPTH_OFFSET_ENABLE   (1<<3)
+#define S4_VFMT_FOG_PARAM              (1<<2)
+#define S4_SPRITE_POINT_ENABLE         (1<<1)
+#define S4_LINE_ANTIALIAS_ENABLE       (1<<0)
+
+#define S4_VFMT_MASK (S4_VFMT_POINT_WIDTH   |	\
+		      S4_VFMT_SPEC_FOG      |	\
+		      S4_VFMT_COLOR         |	\
+		      S4_VFMT_DEPTH_OFFSET  |	\
+		      S4_VFMT_XYZW_MASK     |	\
+		      S4_VFMT_FOG_PARAM)
+
+#define S5_WRITEDISABLE_ALPHA          (1<<31)
+#define S5_WRITEDISABLE_RED            (1<<30)
+#define S5_WRITEDISABLE_GREEN          (1<<29)
+#define S5_WRITEDISABLE_BLUE           (1<<28)
+#define S5_WRITEDISABLE_MASK           (0xf<<28)
+#define S5_FORCE_DEFAULT_POINT_SIZE    (1<<27)
+#define S5_LAST_PIXEL_ENABLE           (1<<26)
+#define S5_GLOBAL_DEPTH_OFFSET_ENABLE  (1<<25)
+#define S5_FOG_ENABLE                  (1<<24)
+#define S5_STENCIL_REF_SHIFT           16
+#define S5_STENCIL_REF_MASK            (0xff<<16)
+#define S5_STENCIL_TEST_FUNC_SHIFT     13
+#define S5_STENCIL_TEST_FUNC_MASK      (0x7<<13)
+#define S5_STENCIL_FAIL_SHIFT          10
+#define S5_STENCIL_FAIL_MASK           (0x7<<10)
+#define S5_STENCIL_PASS_Z_FAIL_SHIFT   7
+#define S5_STENCIL_PASS_Z_FAIL_MASK    (0x7<<7)
+#define S5_STENCIL_PASS_Z_PASS_SHIFT   4
+#define S5_STENCIL_PASS_Z_PASS_MASK    (0x7<<4)
+#define S5_STENCIL_WRITE_ENABLE        (1<<3)
+#define S5_STENCIL_TEST_ENABLE         (1<<2)
+#define S5_COLOR_DITHER_ENABLE         (1<<1)
+#define S5_LOGICOP_ENABLE              (1<<0)
+
+#define COMPAREFUNC_ALWAYS		0
+#define COMPAREFUNC_NEVER		0x1
+#define COMPAREFUNC_LESS		0x2
+#define COMPAREFUNC_EQUAL		0x3
+#define COMPAREFUNC_LEQUAL		0x4
+#define COMPAREFUNC_GREATER		0x5
+#define COMPAREFUNC_NOTEQUAL		0x6
+#define COMPAREFUNC_GEQUAL		0x7
+
+#define STENCILOP_KEEP			0
+#define STENCILOP_ZERO			0x1
+#define STENCILOP_REPLACE		0x2
+#define STENCILOP_INCRSAT		0x3
+#define STENCILOP_DECRSAT		0x4
+#define STENCILOP_INCR			0x5
+#define STENCILOP_DECR			0x6
+#define STENCILOP_INVERT		0x7
+
+#define S6_ALPHA_TEST_ENABLE           (1<<31)
+#define S6_ALPHA_TEST_FUNC_SHIFT       28
+#define S6_ALPHA_TEST_FUNC_MASK        (0x7<<28)
+#define S6_ALPHA_REF_SHIFT             20
+#define S6_ALPHA_REF_MASK              (0xff<<20)
+#define S6_DEPTH_TEST_ENABLE           (1<<19)
+#define S6_DEPTH_TEST_FUNC_SHIFT       16
+#define S6_DEPTH_TEST_FUNC_MASK        (0x7<<16)
+#define S6_CBUF_BLEND_ENABLE           (1<<15)
+#define S6_CBUF_BLEND_FUNC_SHIFT       12
+#define S6_CBUF_BLEND_FUNC_MASK        (0x7<<12)
+#define S6_CBUF_SRC_BLEND_FACT_SHIFT   8
+#define S6_CBUF_SRC_BLEND_FACT_MASK    (0xf<<8)
+#define S6_CBUF_DST_BLEND_FACT_SHIFT   4
+#define S6_CBUF_DST_BLEND_FACT_MASK    (0xf<<4)
+#define S6_DEPTH_WRITE_ENABLE          (1<<3)
+#define S6_COLOR_WRITE_ENABLE          (1<<2)
+#define S6_TRISTRIP_PV_SHIFT           0
+#define S6_TRISTRIP_PV_MASK            (0x3<<0)
+
+#define S7_DEPTH_OFFSET_CONST_MASK     ~0
+
+/* 3DSTATE_MAP_DEINTERLACER_PARAMETERS */
+/* 3DSTATE_MAP_PALETTE_LOAD_32, p206 */
+
+/* _3DSTATE_MODES_4, p218 */
+#define _3DSTATE_MODES_4_CMD		(CMD_3D|(0x0d<<24))
+#define ENABLE_LOGIC_OP_FUNC		(1<<23)
+#define LOGIC_OP_FUNC(x)		((x)<<18)
+#define LOGICOP_MASK			(0xf<<18)
+#define LOGICOP_COPY			0xc
+#define MODE4_ENABLE_STENCIL_TEST_MASK	((1<<17)|(0xff00))
+#define ENABLE_STENCIL_TEST_MASK	(1<<17)
+#define STENCIL_TEST_MASK(x)		((x)<<8)
+#define MODE4_ENABLE_STENCIL_WRITE_MASK	((1<<16)|(0x00ff))
+#define ENABLE_STENCIL_WRITE_MASK	(1<<16)
+#define STENCIL_WRITE_MASK(x)		((x)&0xff)
+
+/* _3DSTATE_MODES_5, p220 */
+#define _3DSTATE_MODES_5_CMD		(CMD_3D|(0x0c<<24))
+#define PIPELINE_FLUSH_RENDER_CACHE	(1<<18)
+#define PIPELINE_FLUSH_TEXTURE_CACHE	(1<<16)
+
+/* p221 */
+#define _3DSTATE_PIXEL_SHADER_CONSTANTS  (CMD_3D|(0x1d<<24)|(0x6<<16))
+#define PS1_REG(n)                      (1<<(n))
+#define PS2_CONST_X(n)                  (n)
+#define PS3_CONST_Y(n)                  (n)
+#define PS4_CONST_Z(n)                  (n)
+#define PS5_CONST_W(n)                  (n)
+
+/* p222 */
+
+#define I915_MAX_TEX_INDIRECT 4
+#define I915_MAX_TEX_INSN     32
+#define I915_MAX_ALU_INSN     64
+#define I915_MAX_DECL_INSN    27
+#define I915_MAX_TEMPORARY    16
+
+/* Each instruction is 3 dwords long, though most don't require all
+ * this space.  Maximum of 123 instructions.  Smaller maxes per insn
+ * type.
+ */
+#define _3DSTATE_PIXEL_SHADER_PROGRAM    (CMD_3D|(0x1d<<24)|(0x5<<16))
+
+#define REG_TYPE_R                 0 /* temporary regs, no need to
+				      * dcl, must be written before
+				      * read -- Preserved between
+				      * phases.
+				      */
+#define REG_TYPE_T                 1 /* Interpolated values, must be
+				      * dcl'ed before use.
+				      *
+				      * 0..7: texture coord,
+				      * 8: diffuse spec,
+				      * 9: specular color,
+				      * 10: fog parameter in w.
+				      */
+#define REG_TYPE_CONST             2 /* Restriction: only one const
+				      * can be referenced per
+				      * instruction, though it may be
+				      * selected for multiple inputs.
+				      * Constants not initialized
+				      * default to zero.
+				      */
+#define REG_TYPE_S                 3 /* sampler */
+#define REG_TYPE_OC                4 /* output color (rgba) */
+#define REG_TYPE_OD                5 /* output depth (w), xyz are
+				      * temporaries.  If not written,
+				      * interpolated depth is used?
+				      */
+#define REG_TYPE_U                 6 /* unpreserved temporaries */
+#define REG_TYPE_MASK              0x7
+#define REG_NR_MASK                0xf
+
+/* REG_TYPE_T:
+ */
+#define T_TEX0     0
+#define T_TEX1     1
+#define T_TEX2     2
+#define T_TEX3     3
+#define T_TEX4     4
+#define T_TEX5     5
+#define T_TEX6     6
+#define T_TEX7     7
+#define T_DIFFUSE  8
+#define T_SPECULAR 9
+#define T_FOG_W    10		/* interpolated fog is in W coord */
+
+/* Arithmetic instructions */
+
+/* .replicate_swizzle == selection and replication of a particular
+ * scalar channel, ie., .xxxx, .yyyy, .zzzz or .wwww
+ */
+#define A0_NOP    (0x0<<24)		/* no operation */
+#define A0_ADD    (0x1<<24)		/* dst = src0 + src1 */
+#define A0_MOV    (0x2<<24)		/* dst = src0 */
+#define A0_MUL    (0x3<<24)		/* dst = src0 * src1 */
+#define A0_MAD    (0x4<<24)		/* dst = src0 * src1 + src2 */
+#define A0_DP2ADD (0x5<<24)		/* dst.xyzw = src0.xy dot src1.xy + src2.replicate_swizzle */
+#define A0_DP3    (0x6<<24)		/* dst.xyzw = src0.xyz dot src1.xyz */
+#define A0_DP4    (0x7<<24)		/* dst.xyzw = src0.xyzw dot src1.xyzw */
+#define A0_FRC    (0x8<<24)		/* dst = src0 - floor(src0) */
+#define A0_RCP    (0x9<<24)		/* dst.xyzw = 1/(src0.replicate_swizzle) */
+#define A0_RSQ    (0xa<<24)		/* dst.xyzw = 1/(sqrt(abs(src0.replicate_swizzle))) */
+#define A0_EXP    (0xb<<24)		/* dst.xyzw = exp2(src0.replicate_swizzle) */
+#define A0_LOG    (0xc<<24)		/* dst.xyzw = log2(abs(src0.replicate_swizzle)) */
+#define A0_CMP    (0xd<<24)		/* dst = (src0 >= 0.0) ? src1 : src2 */
+#define A0_MIN    (0xe<<24)		/* dst = (src0 < src1) ? src0 : src1 */
+#define A0_MAX    (0xf<<24)		/* dst = (src0 >= src1) ? src0 : src1 */
+#define A0_FLR    (0x10<<24)		/* dst = floor(src0) */
+#define A0_MOD    (0x11<<24)		/* dst = src0 fmod 1.0 */
+#define A0_TRC    (0x12<<24)		/* dst = int(src0) */
+#define A0_SGE    (0x13<<24)		/* dst = src0 >= src1 ? 1.0 : 0.0 */
+#define A0_SLT    (0x14<<24)		/* dst = src0 < src1 ? 1.0 : 0.0 */
+#define A0_DEST_SATURATE                 (1<<22)
+#define A0_DEST_TYPE_SHIFT                19
+/* Allow: R, OC, OD, U */
+#define A0_DEST_NR_SHIFT                 14
+/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */
+#define A0_DEST_CHANNEL_X                (1<<10)
+#define A0_DEST_CHANNEL_Y                (2<<10)
+#define A0_DEST_CHANNEL_Z                (4<<10)
+#define A0_DEST_CHANNEL_W                (8<<10)
+#define A0_DEST_CHANNEL_ALL              (0xf<<10)
+#define A0_DEST_CHANNEL_SHIFT            10
+#define A0_SRC0_TYPE_SHIFT               7
+#define A0_SRC0_NR_SHIFT                 2
+
+#define A0_DEST_CHANNEL_XY              (A0_DEST_CHANNEL_X|A0_DEST_CHANNEL_Y)
+#define A0_DEST_CHANNEL_XYZ             (A0_DEST_CHANNEL_XY|A0_DEST_CHANNEL_Z)
+
+#define SRC_X        0
+#define SRC_Y        1
+#define SRC_Z        2
+#define SRC_W        3
+#define SRC_ZERO     4
+#define SRC_ONE      5
+
+#define A1_SRC0_CHANNEL_X_NEGATE         (1<<31)
+#define A1_SRC0_CHANNEL_X_SHIFT          28
+#define A1_SRC0_CHANNEL_Y_NEGATE         (1<<27)
+#define A1_SRC0_CHANNEL_Y_SHIFT          24
+#define A1_SRC0_CHANNEL_Z_NEGATE         (1<<23)
+#define A1_SRC0_CHANNEL_Z_SHIFT          20
+#define A1_SRC0_CHANNEL_W_NEGATE         (1<<19)
+#define A1_SRC0_CHANNEL_W_SHIFT          16
+#define A1_SRC1_TYPE_SHIFT               13
+#define A1_SRC1_NR_SHIFT                 8
+#define A1_SRC1_CHANNEL_X_NEGATE         (1<<7)
+#define A1_SRC1_CHANNEL_X_SHIFT          4
+#define A1_SRC1_CHANNEL_Y_NEGATE         (1<<3)
+#define A1_SRC1_CHANNEL_Y_SHIFT          0
+
+#define A2_SRC1_CHANNEL_Z_NEGATE         (1<<31)
+#define A2_SRC1_CHANNEL_Z_SHIFT          28
+#define A2_SRC1_CHANNEL_W_NEGATE         (1<<27)
+#define A2_SRC1_CHANNEL_W_SHIFT          24
+#define A2_SRC2_TYPE_SHIFT               21
+#define A2_SRC2_NR_SHIFT                 16
+#define A2_SRC2_CHANNEL_X_NEGATE         (1<<15)
+#define A2_SRC2_CHANNEL_X_SHIFT          12
+#define A2_SRC2_CHANNEL_Y_NEGATE         (1<<11)
+#define A2_SRC2_CHANNEL_Y_SHIFT          8
+#define A2_SRC2_CHANNEL_Z_NEGATE         (1<<7)
+#define A2_SRC2_CHANNEL_Z_SHIFT          4
+#define A2_SRC2_CHANNEL_W_NEGATE         (1<<3)
+#define A2_SRC2_CHANNEL_W_SHIFT          0
+
+/* Texture instructions */
+#define T0_TEXLD     (0x15<<24)	/* Sample texture using predeclared
+				 * sampler and address, and output
+				 * filtered texel data to destination
+				 * register */
+#define T0_TEXLDP    (0x16<<24)	/* Same as texld but performs a
+				 * perspective divide of the texture
+				 * coordinate .xyz values by .w before
+				 * sampling. */
+#define T0_TEXLDB    (0x17<<24)	/* Same as texld but biases the
+				 * computed LOD by w.  Only S4.6 two's
+				 * comp is used.  This implies that a
+				 * float to fixed conversion is
+				 * done. */
+#define T0_TEXKILL   (0x18<<24)	/* Does not perform a sampling
+				 * operation.  Simply kills the pixel
+				 * if any channel of the address
+				 * register is < 0.0. */
+#define T0_DEST_TYPE_SHIFT                19
+/* Allow: R, OC, OD, U */
+/* Note: U (unpreserved) regs do not retain their values between
+ * phases (cannot be used for feedback)
+ *
+ * Note: oC and OD registers can only be used as the destination of a
+ * texture instruction once per phase (this is an implementation
+ * restriction).
+ */
+#define T0_DEST_NR_SHIFT                 14
+/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */
+#define T0_SAMPLER_NR_SHIFT              0 /* This field ignored for TEXKILL */
+#define T0_SAMPLER_NR_MASK               (0xf<<0)
+
+#define T1_ADDRESS_REG_TYPE_SHIFT        24 /* Reg to use as texture coord */
+/* Allow R, T, OC, OD -- R, OC, OD are 'dependent' reads, new program phase */
+#define T1_ADDRESS_REG_NR_SHIFT          17
+#define T2_MBZ                           0
+
+/* Declaration instructions */
+#define D0_DCL       (0x19<<24)	/* Declare a t (interpolated attrib)
+				 * register or an s (sampler)
+				 * register. */
+#define D0_SAMPLE_TYPE_SHIFT              22
+#define D0_SAMPLE_TYPE_2D                 (0x0<<22)
+#define D0_SAMPLE_TYPE_CUBE               (0x1<<22)
+#define D0_SAMPLE_TYPE_VOLUME             (0x2<<22)
+#define D0_SAMPLE_TYPE_MASK               (0x3<<22)
+
+#define D0_TYPE_SHIFT                19
+/* Allow: T, S */
+#define D0_NR_SHIFT                  14
+/* Allow T: 0..10, S: 0..15 */
+#define D0_CHANNEL_X                (1<<10)
+#define D0_CHANNEL_Y                (2<<10)
+#define D0_CHANNEL_Z                (4<<10)
+#define D0_CHANNEL_W                (8<<10)
+#define D0_CHANNEL_ALL              (0xf<<10)
+#define D0_CHANNEL_NONE             (0<<10)
+
+#define D0_CHANNEL_XY               (D0_CHANNEL_X|D0_CHANNEL_Y)
+#define D0_CHANNEL_XYZ              (D0_CHANNEL_XY|D0_CHANNEL_Z)
+
+/* I915 Errata: Do not allow (xz), (xw), (xzw) combinations for diffuse
+ * or specular declarations.
+ *
+ * For T dcls, only allow: (x), (xy), (xyz), (w), (xyzw)
+ *
+ * Must be zero for S (sampler) dcls
+ */
+#define D1_MBZ                          0
+#define D2_MBZ                          0
+
+/* p207.
+ * The DWORD count is 3 times the number of bits set in MS1_MAPMASK_MASK
+ */
+#define _3DSTATE_MAP_STATE               (CMD_3D|(0x1d<<24)|(0x0<<16))
+
+#define MS1_MAPMASK_SHIFT               0
+#define MS1_MAPMASK_MASK                (0x8fff<<0)
+
+#define MS2_UNTRUSTED_SURFACE           (1<<31)
+#define MS2_ADDRESS_MASK                0xfffffffc
+#define MS2_VERTICAL_LINE_STRIDE        (1<<1)
+#define MS2_VERTICAL_OFFSET             (1<<1)
+
+#define MS3_HEIGHT_SHIFT              21
+#define MS3_WIDTH_SHIFT               10
+#define MS3_PALETTE_SELECT            (1<<9)
+#define MS3_MAPSURF_FORMAT_SHIFT      7
+#define MS3_MAPSURF_FORMAT_MASK       (0x7<<7)
+#define    MAPSURF_8BIT			   (1<<7)
+#define    MAPSURF_16BIT		   (2<<7)
+#define    MAPSURF_32BIT		   (3<<7)
+#define    MAPSURF_422			   (5<<7)
+#define    MAPSURF_COMPRESSED		   (6<<7)
+#define    MAPSURF_4BIT_INDEXED		   (7<<7)
+#define MS3_MT_FORMAT_MASK         (0x7 << 3)
+#define MS3_MT_FORMAT_SHIFT        3
+#define    MT_4BIT_IDX_ARGB8888	           (7<<3) /* SURFACE_4BIT_INDEXED */
+#define    MT_8BIT_I8		           (0<<3) /* SURFACE_8BIT */
+#define    MT_8BIT_L8		           (1<<3)
+#define    MT_8BIT_A8		           (4<<3)
+#define    MT_8BIT_MONO8	           (5<<3)
+#define    MT_16BIT_RGB565		   (0<<3) /* SURFACE_16BIT */
+#define    MT_16BIT_ARGB1555		   (1<<3)
+#define    MT_16BIT_ARGB4444		   (2<<3)
+#define    MT_16BIT_AY88		   (3<<3)
+#define    MT_16BIT_88DVDU	           (5<<3)
+#define    MT_16BIT_BUMP_655LDVDU	   (6<<3)
+#define    MT_16BIT_I16	                   (7<<3)
+#define    MT_16BIT_L16	                   (8<<3)
+#define    MT_16BIT_A16	                   (9<<3)
+#define    MT_32BIT_ARGB8888		   (0<<3) /* SURFACE_32BIT */
+#define    MT_32BIT_ABGR8888		   (1<<3)
+#define    MT_32BIT_XRGB8888		   (2<<3)
+#define    MT_32BIT_XBGR8888		   (3<<3)
+#define    MT_32BIT_QWVU8888		   (4<<3)
+#define    MT_32BIT_AXVU8888		   (5<<3)
+#define    MT_32BIT_LXVU8888	           (6<<3)
+#define    MT_32BIT_XLVU8888	           (7<<3)
+#define    MT_32BIT_ARGB2101010	           (8<<3)
+#define    MT_32BIT_ABGR2101010	           (9<<3)
+#define    MT_32BIT_AWVU2101010	           (0xA<<3)
+#define    MT_32BIT_GR1616	           (0xB<<3)
+#define    MT_32BIT_VU1616	           (0xC<<3)
+#define    MT_32BIT_xI824	           (0xD<<3)
+#define    MT_32BIT_xA824	           (0xE<<3)
+#define    MT_32BIT_xL824	           (0xF<<3)
+#define    MT_422_YCRCB_SWAPY	           (0<<3) /* SURFACE_422 */
+#define    MT_422_YCRCB_NORMAL	           (1<<3)
+#define    MT_422_YCRCB_SWAPUV	           (2<<3)
+#define    MT_422_YCRCB_SWAPUVY	           (3<<3)
+#define    MT_COMPRESS_DXT1		   (0<<3) /* SURFACE_COMPRESSED */
+#define    MT_COMPRESS_DXT2_3	           (1<<3)
+#define    MT_COMPRESS_DXT4_5	           (2<<3)
+#define    MT_COMPRESS_FXT1		   (3<<3)
+#define    MT_COMPRESS_DXT1_RGB		   (4<<3)
+#define MS3_USE_FENCE_REGS              (1<<2)
+#define MS3_TILED_SURFACE             (1<<1)
+#define MS3_TILE_WALK                 (1<<0)
+
+/* The pitch is the pitch measured in DWORDS, minus 1 */
+#define MS4_PITCH_SHIFT                 21
+#define MS4_CUBE_FACE_ENA_NEGX          (1<<20)
+#define MS4_CUBE_FACE_ENA_POSX          (1<<19)
+#define MS4_CUBE_FACE_ENA_NEGY          (1<<18)
+#define MS4_CUBE_FACE_ENA_POSY          (1<<17)
+#define MS4_CUBE_FACE_ENA_NEGZ          (1<<16)
+#define MS4_CUBE_FACE_ENA_POSZ          (1<<15)
+#define MS4_CUBE_FACE_ENA_MASK          (0x3f<<15)
+#define MS4_MAX_LOD_SHIFT		9
+#define MS4_MAX_LOD_MASK		(0x3f<<9)
+#define MS4_MIP_LAYOUT_LEGACY           (0<<8)
+#define MS4_MIP_LAYOUT_BELOW_LPT        (0<<8)
+#define MS4_MIP_LAYOUT_RIGHT_LPT        (1<<8)
+#define MS4_VOLUME_DEPTH_SHIFT          0
+#define MS4_VOLUME_DEPTH_MASK           (0xff<<0)
+
+/* p244.
+ * The DWORD count is 3 times the number of bits set in SS1_MAPMASK_MASK.
+ */
+#define _3DSTATE_SAMPLER_STATE         (CMD_3D|(0x1d<<24)|(0x1<<16))
+
+#define SS1_MAPMASK_SHIFT               0
+#define SS1_MAPMASK_MASK                (0x8fff<<0)
+
+#define SS2_REVERSE_GAMMA_ENABLE        (1<<31)
+#define SS2_PACKED_TO_PLANAR_ENABLE     (1<<30)
+#define SS2_COLORSPACE_CONVERSION       (1<<29)
+#define SS2_CHROMAKEY_SHIFT             27
+#define SS2_BASE_MIP_LEVEL_SHIFT        22
+#define SS2_BASE_MIP_LEVEL_MASK         (0x1f<<22)
+#define SS2_MIP_FILTER_SHIFT            20
+#define SS2_MIP_FILTER_MASK             (0x3<<20)
+#define   MIPFILTER_NONE	0
+#define   MIPFILTER_NEAREST	1
+#define   MIPFILTER_LINEAR	3
+#define SS2_MAG_FILTER_SHIFT          17
+#define SS2_MAG_FILTER_MASK           (0x7<<17)
+#define   FILTER_NEAREST	0
+#define   FILTER_LINEAR		1
+#define   FILTER_ANISOTROPIC	2
+#define   FILTER_4X4_1		3
+#define   FILTER_4X4_2		4
+#define   FILTER_4X4_FLAT	5
+#define   FILTER_6X5_MONO	6 /* XXX - check */
+#define SS2_MIN_FILTER_SHIFT          14
+#define SS2_MIN_FILTER_MASK           (0x7<<14)
+#define SS2_LOD_BIAS_SHIFT            5
+#define SS2_LOD_BIAS_ONE              (0x10<<5)
+#define SS2_LOD_BIAS_MASK             (0x1ff<<5)
+/* Shadow requires:
+ *  MT_X8{I,L,A}24 or MT_{I,L,A}16 texture format
+ *  FILTER_4X4_x  MIN and MAG filters
+ */
+#define SS2_SHADOW_ENABLE             (1<<4)
+#define SS2_MAX_ANISO_MASK            (1<<3)
+#define SS2_MAX_ANISO_2               (0<<3)
+#define SS2_MAX_ANISO_4               (1<<3)
+#define SS2_SHADOW_FUNC_SHIFT         0
+#define SS2_SHADOW_FUNC_MASK          (0x7<<0)
+/* SS2_SHADOW_FUNC values: see COMPAREFUNC_* */
+
+#define SS3_MIN_LOD_SHIFT            24
+#define SS3_MIN_LOD_ONE              (0x10<<24)
+#define SS3_MIN_LOD_MASK             (0xff<<24)
+#define SS3_KILL_PIXEL_ENABLE        (1<<17)
+#define SS3_TCX_ADDR_MODE_SHIFT      12
+#define SS3_TCX_ADDR_MODE_MASK       (0x7<<12)
+#define   TEXCOORDMODE_WRAP		0
+#define   TEXCOORDMODE_MIRROR		1
+#define   TEXCOORDMODE_CLAMP_EDGE	2
+#define   TEXCOORDMODE_CUBE		3
+#define   TEXCOORDMODE_CLAMP_BORDER	4
+#define   TEXCOORDMODE_MIRROR_ONCE      5
+#define SS3_TCY_ADDR_MODE_SHIFT      9
+#define SS3_TCY_ADDR_MODE_MASK       (0x7<<9)
+#define SS3_TCZ_ADDR_MODE_SHIFT      6
+#define SS3_TCZ_ADDR_MODE_MASK       (0x7<<6)
+#define SS3_NORMALIZED_COORDS        (1<<5)
+#define SS3_TEXTUREMAP_INDEX_SHIFT   1
+#define SS3_TEXTUREMAP_INDEX_MASK    (0xf<<1)
+#define SS3_DEINTERLACER_ENABLE      (1<<0)
+
+#define SS4_BORDER_COLOR_MASK        (~0)
+
+/* 3DSTATE_SPAN_STIPPLE, p258
+ */
+#define _3DSTATE_STIPPLE           ((0x3<<29)|(0x1d<<24)|(0x83<<16))
+#define ST1_ENABLE               (1<<16)
+#define ST1_MASK                 (0xffff)
+
+#define FLUSH_MAP_CACHE    (1<<0)
+#define FLUSH_RENDER_CACHE (1<<1)
+
+/* BLT commands */
+#define COLOR_BLT_CMD		        (CMD_2D | (0x40 << 22) | 3)
+#define XY_COLOR_BLT_CMD		(CMD_2D | (0x50 << 22) | 4)
+#define XY_SETUP_CLIP_BLT_CMD		(CMD_2D | (0x03 << 22) | 1)
+#define XY_SRC_COPY_BLT_CMD             (CMD_2D | (0x53 << 22) | 6)
+#define SRC_COPY_BLT_CMD		(CMD_2D | (0x43 << 22) | 4)
+
+#define XY_MONO_PAT_BLT_CMD		(CMD_2D  | (0x52<<22)|0x7)
+#define XY_MONO_PAT_VERT_SEED		((1<<10) | (1<<9)|(1<<8))
+#define XY_MONO_PAT_HORT_SEED		((1<<14) | (1<<13)|(1<<12))
+#define XY_MONO_SRC_BLT_CMD		(CMD_2D  | (0x54<<22)|(0x6))
+
+#define XY_SETUP_BLT_CMD		(CMD_2D | (0x01 << 22) | 6)
+#define XY_TEXT_IMMEDIATE_BLIT_CMD	(CMD_2D | (0x31 << 22))
+#define XY_TEXT_BYTE_PACKED		(1 << 16)
+
+/* BR00 */
+#define XY_BLT_WRITE_ALPHA	(1 << 21)
+#define XY_BLT_WRITE_RGB	(1 << 20)
+#define XY_SRC_TILED		(1 << 15)
+#define XY_DST_TILED		(1 << 11)
+
+/* BR13 */
+#define BR13_565		(0x1 << 24)
+#define BR13_8888		(0x3 << 24)
+
+#endif /* CAIRO_DRM_INTEL_COMMAND_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-debug.c b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-debug.c
new file mode 100644
index 0000000..bfe5136
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-debug.c
@@ -0,0 +1,1209 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "cairoint.h"
+#include "cairo-drm-intel-private.h"
+
+struct debug_stream {
+    unsigned offset;	/* current gtt offset */
+    const char *ptr;		/* pointer to gtt offset zero */
+    const char *end;		/* pointer to gtt offset zero */
+};
+
+static cairo_bool_t
+debug (struct debug_stream *stream, const char *name, uint32_t len)
+{
+    uint32_t i;
+    const uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+
+    if (len == 0) {
+	fprintf (stderr, "Error - zero length packet (0x%08x)\n", stream->ptr[0]);
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    for (i = 0; i < len; i++)
+	fprintf (stderr, "\t0x%08x\n",  ptr[i]);
+    fprintf (stderr, "\n");
+
+    stream->offset += len * sizeof(uint32_t);
+    return TRUE;
+}
+
+
+static const char *
+get_prim_name (uint32_t val)
+{
+    switch (val & PRIM3D_MASK) {
+    case PRIM3D_TRILIST: return "TRILIST";
+    case PRIM3D_TRISTRIP: return "TRISTRIP";
+    case PRIM3D_TRISTRIP_RVRSE: return "TRISTRIP_RVRSE";
+    case PRIM3D_TRIFAN: return "TRIFAN";
+    case PRIM3D_POLY: return "POLY";
+    case PRIM3D_LINELIST: return "LINELIST";
+    case PRIM3D_LINESTRIP: return "LINESTRIP";
+    case PRIM3D_RECTLIST: return "RECTLIST";
+    case PRIM3D_POINTLIST: return "POINTLIST";
+    case PRIM3D_DIB: return "DIB";
+    case PRIM3D_CLEAR_RECT: return "CLEAR_RECT";
+    case PRIM3D_ZONE_INIT: return "ZONE_INIT";
+    default: return "????";
+    }
+}
+
+static cairo_bool_t
+debug_prim (struct debug_stream *stream,
+	    const char *name,
+	    cairo_bool_t dump_floats,
+	    uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    const char *prim = get_prim_name( ptr[0] );
+    uint32_t i;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s %s (%d dwords):\n", name, prim, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[0]);
+    for (i = 1; i < len; i++) {
+	if (dump_floats)
+	    fprintf (stderr, "\t0x%08x // %f\n",  ptr[i], *(float *)&ptr[i]);
+	else
+	    fprintf (stderr, "\t0x%08x\n",  ptr[i]);
+    }
+
+    fprintf (stderr, "\n");
+
+    stream->offset += len * sizeof(uint32_t);
+    return TRUE;
+}
+
+static const char *opcodes[] = {
+    "NOP",
+    "ADD",
+    "MOV",
+    "MUL",
+    "MAD",
+    "DP2ADD",
+    "DP3",
+    "DP4",
+    "FRC",
+    "RCP",
+    "RSQ",
+    "EXP",
+    "LOG",
+    "CMP",
+    "MIN",
+    "MAX",
+    "FLR",
+    "MOD",
+    "TRC",
+    "SGE",
+    "SLT",
+    "TEXLD",
+    "TEXLDP",
+    "TEXLDB",
+    "TEXKILL",
+    "DCL",
+    "0x1a",
+    "0x1b",
+    "0x1c",
+    "0x1d",
+    "0x1e",
+    "0x1f",
+};
+
+static const int args[] = {
+    0,                           /* 0 nop */
+    2,                           /* 1 add */
+    1,                           /* 2 mov */
+    2,                           /* 3 m ul */
+    3,                           /* 4 mad */
+    3,                           /* 5 dp2add */
+    2,                           /* 6 dp3 */
+    2,                           /* 7 dp4 */
+    1,                           /* 8 frc */
+    1,                           /* 9 rcp */
+    1,                           /* a rsq */
+    1,                           /* b exp */
+    1,                           /* c log */
+    3,                           /* d cmp */
+    2,                           /* e min */
+    2,                           /* f max */
+    1,                           /* 10 flr */
+    1,                           /* 11 mod */
+    1,                           /* 12 trc */
+    2,                           /* 13 sge */
+    2,                           /* 14 slt */
+    1,
+    1,
+    1,
+    1,
+    0,
+    0,
+    0,
+    0,
+    0,
+    0,
+    0,
+};
+
+static const char *regname[] = {
+    "R",
+    "T",
+    "CONST",
+    "S",
+    "OC",
+    "OD",
+    "U",
+    "UNKNOWN",
+};
+
+static void
+print_reg_type_nr(uint32_t type, uint32_t nr)
+{
+    switch (type) {
+    case REG_TYPE_T:
+	switch (nr) {
+	case T_DIFFUSE:
+	    fprintf (stderr, "T_DIFFUSE");
+	    return;
+	case T_SPECULAR:
+	    fprintf (stderr, "T_SPECULAR");
+	    return;
+	case T_FOG_W:
+	    fprintf (stderr, "T_FOG_W");
+	    return;
+	default:
+	    fprintf (stderr, "T_TEX%d", nr);
+	    return;
+	}
+    case REG_TYPE_OC:
+	if (nr == 0) {
+	    fprintf (stderr, "oC");
+	    return;
+	}
+	break;
+    case REG_TYPE_OD:
+	if (nr == 0) {
+	    fprintf (stderr, "oD");
+	    return;
+	}
+	break;
+    default:
+	break;
+    }
+
+    fprintf (stderr, "%s[%d]", regname[type], nr);
+}
+
+#define REG_SWIZZLE_MASK 0x7777
+#define REG_NEGATE_MASK 0x8888
+
+#define REG_SWIZZLE_XYZW ((SRC_X << A2_SRC2_CHANNEL_X_SHIFT) |	\
+			  (SRC_Y << A2_SRC2_CHANNEL_Y_SHIFT) |	\
+			  (SRC_Z << A2_SRC2_CHANNEL_Z_SHIFT) |	\
+			  (SRC_W << A2_SRC2_CHANNEL_W_SHIFT))
+
+static void
+print_reg_neg_swizzle(uint32_t reg)
+{
+    int i;
+
+    if ((reg & REG_SWIZZLE_MASK) == REG_SWIZZLE_XYZW &&
+	(reg & REG_NEGATE_MASK) == 0)
+	return;
+
+    fprintf (stderr, ".");
+
+    for (i = 12; i >= 0; i -= 4) {
+	if (reg & (8 << i))
+	    fprintf (stderr, "-");
+
+	switch ((reg >> i) & 0x7) {
+	case 0:
+	    fprintf (stderr, "x");
+	    break;
+	case 1:
+	    fprintf (stderr, "y");
+	    break;
+	case 2:
+	    fprintf (stderr, "z");
+	    break;
+	case 3:
+	    fprintf (stderr, "w");
+	    break;
+	case 4:
+	    fprintf (stderr, "0");
+	    break;
+	case 5:
+	    fprintf (stderr, "1");
+	    break;
+	default:
+	    fprintf (stderr, "?");
+	    break;
+	}
+    }
+}
+
+static void
+print_src_reg(uint32_t dword)
+{
+    uint32_t nr = (dword >> A2_SRC2_NR_SHIFT) & REG_NR_MASK;
+    uint32_t type = (dword >> A2_SRC2_TYPE_SHIFT) & REG_TYPE_MASK;
+    print_reg_type_nr(type, nr);
+    print_reg_neg_swizzle(dword);
+}
+
+static void
+print_dest_reg(uint32_t dword)
+{
+    uint32_t nr = (dword >> A0_DEST_NR_SHIFT) & REG_NR_MASK;
+    uint32_t type = (dword >> A0_DEST_TYPE_SHIFT) & REG_TYPE_MASK;
+    print_reg_type_nr(type, nr);
+    if ((dword & A0_DEST_CHANNEL_ALL) == A0_DEST_CHANNEL_ALL)
+	return;
+    fprintf (stderr, ".");
+    if (dword & A0_DEST_CHANNEL_X)
+	fprintf (stderr, "x");
+    if (dword & A0_DEST_CHANNEL_Y)
+	fprintf (stderr, "y");
+    if (dword & A0_DEST_CHANNEL_Z)
+	fprintf (stderr, "z");
+    if (dword & A0_DEST_CHANNEL_W)
+	fprintf (stderr, "w");
+}
+
+#define GET_SRC0_REG(r0, r1) ((r0<<14)|(r1>>A1_SRC0_CHANNEL_W_SHIFT))
+#define GET_SRC1_REG(r0, r1) ((r0<<8)|(r1>>A2_SRC1_CHANNEL_W_SHIFT))
+#define GET_SRC2_REG(r)      (r)
+
+static void
+print_arith_op(uint32_t opcode, const uint32_t * program)
+{
+    if (opcode != A0_NOP) {
+	print_dest_reg(program[0]);
+	if (program[0] & A0_DEST_SATURATE)
+	    fprintf (stderr, " = SATURATE ");
+	else
+	    fprintf (stderr, " = ");
+    }
+
+    fprintf (stderr, "%s ", opcodes[opcode]);
+
+    print_src_reg(GET_SRC0_REG(program[0], program[1]));
+    if (args[opcode] == 1) {
+	fprintf (stderr, "\n");
+	return;
+    }
+
+    fprintf (stderr, ", ");
+    print_src_reg(GET_SRC1_REG(program[1], program[2]));
+    if (args[opcode] == 2) {
+	fprintf (stderr, "\n");
+	return;
+    }
+
+    fprintf (stderr, ", ");
+    print_src_reg(GET_SRC2_REG(program[2]));
+    fprintf (stderr, "\n");
+    return;
+}
+
+static void
+print_tex_op(uint32_t opcode, const uint32_t * program)
+{
+    print_dest_reg(program[0] | A0_DEST_CHANNEL_ALL);
+    fprintf (stderr, " = ");
+
+    fprintf (stderr, "%s ", opcodes[opcode]);
+
+    fprintf (stderr, "S[%d],", program[0] & T0_SAMPLER_NR_MASK);
+
+    print_reg_type_nr((program[1] >> T1_ADDRESS_REG_TYPE_SHIFT) &
+		      REG_TYPE_MASK,
+		      (program[1] >> T1_ADDRESS_REG_NR_SHIFT) & REG_NR_MASK);
+    fprintf (stderr, "\n");
+}
+
+static void
+print_dcl_op(uint32_t opcode, const uint32_t * program)
+{
+    fprintf (stderr, "%s ", opcodes[opcode]);
+    print_dest_reg(program[0] | A0_DEST_CHANNEL_ALL);
+    fprintf (stderr, "\n");
+}
+
+static void
+i915_disassemble_program (const uint32_t * program, uint32_t sz)
+{
+    uint32_t size = program[0] & 0x1ff;
+    uint32_t i;
+
+    fprintf (stderr, "\tPROGRAM\n");
+
+    assert(size + 2 == sz);
+
+    program++;
+    for (i = 1; i < sz; i += 3, program += 3) {
+	uint32_t opcode = program[0] & (0x1f << 24);
+
+	fprintf (stderr, "\t\t");
+
+	if ((int) opcode >= A0_NOP && opcode <= A0_SLT)
+	    print_arith_op(opcode >> 24, program);
+	else if (opcode >= T0_TEXLD && opcode <= T0_TEXKILL)
+	    print_tex_op(opcode >> 24, program);
+	else if (opcode == D0_DCL)
+	    print_dcl_op(opcode >> 24, program);
+	else
+	    fprintf (stderr, "Unknown opcode 0x%x\n", opcode);
+    }
+
+    fprintf (stderr, "\tEND-PROGRAM\n\n");
+}
+
+static cairo_bool_t
+debug_program (struct debug_stream *stream, const char *name, uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+
+    if (len == 0) {
+	fprintf (stderr, "Error - zero length packet (0x%08x)\n", stream->ptr[0]);
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    i915_disassemble_program (ptr, len);
+
+    stream->offset += len * sizeof(uint32_t);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_chain (struct debug_stream *stream, const char *name, uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t old_offset = stream->offset + len * sizeof(uint32_t);
+    uint32_t i;
+
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    for (i = 0; i < len; i++)
+	fprintf (stderr, "\t0x%08x\n",  ptr[i]);
+
+    stream->offset = ptr[1] & ~0x3;
+
+    if (stream->offset < old_offset)
+	fprintf (stderr, "\n... skipping backwards from 0x%x --> 0x%x ...\n\n",
+		 old_offset, stream->offset );
+    else
+	fprintf (stderr, "\n... skipping from 0x%x --> 0x%x ...\n\n",
+		 old_offset, stream->offset );
+
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_variable_length_prim (struct debug_stream *stream)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    const char *prim = get_prim_name( ptr[0] );
+    uint32_t i, len;
+
+    uint16_t *idx = (uint16_t *)(ptr+1);
+    for (i = 0; idx[i] != 0xffff; i++)
+	;
+
+    len = 1+(i+2)/2;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "3DPRIM, %s variable length %d indices (%d dwords):\n", prim, i, len);
+    for (i = 0; i < len; i++)
+	fprintf (stderr, "\t0x%08x\n",  ptr[i]);
+    fprintf (stderr, "\n");
+
+    stream->offset += len * sizeof(uint32_t);
+    return TRUE;
+}
+
+#define BITS(dw, hi, lo, ...)					\
+    do {							\
+	unsigned himask = 0xffffffffU >> (31 - (hi));		\
+	fprintf (stderr, "\t\t ");				\
+	fprintf (stderr, __VA_ARGS__);				\
+	fprintf (stderr, ": 0x%x\n", ((dw) & himask) >> (lo));	\
+    } while (0)
+
+#define MBZ(dw, hi, lo) do {				\
+    unsigned x = (dw) >> (lo);				\
+    unsigned lomask = (1 << (lo)) - 1;			\
+    unsigned himask;					\
+    himask = (1UL << (hi)) - 1;				\
+    assert ((x & himask & ~lomask) == 0);		\
+} while (0)
+
+#define FLAG(dw, bit, ... )					\
+    do {							\
+	if (((dw) >> (bit)) & 1) {				\
+	    fprintf (stderr, "\t\t ");				\
+	    fprintf (stderr, __VA_ARGS__);			\
+	    fprintf (stderr, "\n");				\
+	}							\
+    } while (0)
+
+static cairo_bool_t
+debug_load_immediate (struct debug_stream *stream,
+		      const char *name,
+		      uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t bits = (ptr[0] >> 4) & 0xff;
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords, flags: %x):\n", name, len, bits);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    if (bits & (1<<0)) {
+	fprintf (stderr, "\t  LIS0: 0x%08x\n", ptr[j]);
+	fprintf (stderr, "\t vb address: 0x%08x\n", (ptr[j] & ~0x3));
+	BITS (ptr[j], 0, 0, "vb invalidate disable");
+	j++;
+    }
+    if (bits & (1<<1)) {
+	fprintf (stderr, "\t  LIS1: 0x%08x\n", ptr[j]);
+	BITS (ptr[j], 29, 24, "vb dword width");
+	BITS (ptr[j], 21, 16, "vb dword pitch");
+	BITS (ptr[j], 15, 0, "vb max index");
+	j++;
+    }
+    if (bits & (1<<2)) {
+	int i;
+	fprintf (stderr, "\t  LIS2: 0x%08x\n", ptr[j]);
+	for (i = 0; i < 8; i++) {
+	    unsigned tc = (ptr[j] >> (i * 4)) & 0xf;
+	    if (tc != 0xf)
+		BITS (tc, 3, 0, "tex coord %d", i);
+	}
+	j++;
+    }
+    if (bits & (1<<3)) {
+	fprintf (stderr, "\t  LIS3: 0x%08x\n", ptr[j]);
+	j++;
+    }
+    if (bits & (1<<4)) {
+	fprintf (stderr, "\t  LIS4: 0x%08x\n", ptr[j]);
+	BITS (ptr[j], 31, 23, "point width");
+	BITS (ptr[j], 22, 19, "line width");
+	FLAG (ptr[j], 18, "alpha flatshade");
+	FLAG (ptr[j], 17, "fog flatshade");
+	FLAG (ptr[j], 16, "spec flatshade");
+	FLAG (ptr[j], 15, "rgb flatshade");
+	BITS (ptr[j], 14, 13, "cull mode");
+	FLAG (ptr[j], 12, "vfmt: point width");
+	FLAG (ptr[j], 11, "vfmt: specular/fog");
+	FLAG (ptr[j], 10, "vfmt: rgba");
+	FLAG (ptr[j], 9, "vfmt: depth offset");
+	BITS (ptr[j], 8, 6, "vfmt: position (2==xyzw)");
+	FLAG (ptr[j], 5, "force dflt diffuse");
+	FLAG (ptr[j], 4, "force dflt specular");
+	FLAG (ptr[j], 3, "local depth offset enable");
+	FLAG (ptr[j], 2, "vfmt: fp32 fog coord");
+	FLAG (ptr[j], 1, "sprite point");
+	FLAG (ptr[j], 0, "antialiasing");
+	j++;
+    }
+    if (bits & (1<<5)) {
+	fprintf (stderr, "\t  LIS5: 0x%08x\n", ptr[j]);
+	BITS (ptr[j], 31, 28, "rgba write disables");
+	FLAG (ptr[j], 27,     "force dflt point width");
+	FLAG (ptr[j], 26,     "last pixel enable");
+	FLAG (ptr[j], 25,     "global z offset enable");
+	FLAG (ptr[j], 24,     "fog enable");
+	BITS (ptr[j], 23, 16, "stencil ref");
+	BITS (ptr[j], 15, 13, "stencil test");
+	BITS (ptr[j], 12, 10, "stencil fail op");
+	BITS (ptr[j], 9, 7,   "stencil pass z fail op");
+	BITS (ptr[j], 6, 4,   "stencil pass z pass op");
+	FLAG (ptr[j], 3,      "stencil write enable");
+	FLAG (ptr[j], 2,      "stencil test enable");
+	FLAG (ptr[j], 1,      "color dither enable");
+	FLAG (ptr[j], 0,      "logiop enable");
+	j++;
+    }
+    if (bits & (1<<6)) {
+	fprintf (stderr, "\t  LIS6: 0x%08x\n", ptr[j]);
+	FLAG (ptr[j], 31,      "alpha test enable");
+	BITS (ptr[j], 30, 28,  "alpha func");
+	BITS (ptr[j], 27, 20,  "alpha ref");
+	FLAG (ptr[j], 19,      "depth test enable");
+	BITS (ptr[j], 18, 16,  "depth func");
+	FLAG (ptr[j], 15,      "blend enable");
+	BITS (ptr[j], 14, 12,  "blend func");
+	BITS (ptr[j], 11, 8,   "blend src factor");
+	BITS (ptr[j], 7,  4,   "blend dst factor");
+	FLAG (ptr[j], 3,       "depth write enable");
+	FLAG (ptr[j], 2,       "color write enable");
+	BITS (ptr[j], 1,  0,   "provoking vertex");
+	j++;
+    }
+
+    fprintf (stderr, "\n");
+
+    assert(j == len);
+
+    stream->offset += len * sizeof(uint32_t);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_load_indirect (struct debug_stream *stream,
+		     const char *name,
+		     uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t bits = (ptr[0] >> 8) & 0x3f;
+    uint32_t i, j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    for (i = 0; i < 6; i++) {
+	if (bits & (1<<i)) {
+	    switch (1<<(8+i)) {
+	    case LI0_STATE_STATIC_INDIRECT:
+		fprintf (stderr, "        STATIC: 0x%08x | %x\n", ptr[j]&~3, ptr[j]&3); j++;
+		fprintf (stderr, "                0x%08x\n", ptr[j++]);
+		break;
+	    case LI0_STATE_DYNAMIC_INDIRECT:
+		fprintf (stderr, "       DYNAMIC: 0x%08x | %x\n", ptr[j]&~3, ptr[j]&3); j++;
+		break;
+	    case LI0_STATE_SAMPLER:
+		fprintf (stderr, "       SAMPLER: 0x%08x | %x\n", ptr[j]&~3, ptr[j]&3); j++;
+		fprintf (stderr, "                0x%08x\n", ptr[j++]);
+		break;
+	    case LI0_STATE_MAP:
+		fprintf (stderr, "           MAP: 0x%08x | %x\n", ptr[j]&~3, ptr[j]&3); j++;
+		fprintf (stderr, "                0x%08x\n", ptr[j++]);
+		break;
+	    case LI0_STATE_PROGRAM:
+		fprintf (stderr, "       PROGRAM: 0x%08x | %x\n", ptr[j]&~3, ptr[j]&3); j++;
+		fprintf (stderr, "                0x%08x\n", ptr[j++]);
+		break;
+	    case LI0_STATE_CONSTANTS:
+		fprintf (stderr, "     CONSTANTS: 0x%08x | %x\n", ptr[j]&~3, ptr[j]&3); j++;
+		fprintf (stderr, "                0x%08x\n", ptr[j++]);
+		break;
+	    default:
+		ASSERT_NOT_REACHED;
+		break;
+	    }
+	}
+    }
+
+    if (bits == 0) {
+	fprintf (stderr, "\t  DUMMY: 0x%08x\n", ptr[j++]);
+    }
+
+    fprintf (stderr, "\n");
+
+    assert(j == len);
+    stream->offset += len * sizeof(uint32_t);
+    return TRUE;
+}
+
+static void
+BR13 (struct debug_stream *stream,
+      uint32_t val)
+{
+    fprintf (stderr, "\t0x%08x\n",  val);
+    FLAG (val, 30, "clipping enable");
+    BITS (val, 25, 24, "color depth (3==32bpp)");
+    BITS (val, 23, 16, "raster op");
+    BITS (val, 15, 0,  "dest pitch");
+}
+
+static void
+BR2223 (struct debug_stream *stream,
+	uint32_t val22, uint32_t val23)
+{
+    union { uint32_t val; short field[2]; } BR22, BR23;
+
+    BR22.val = val22;
+    BR23.val = val23;
+
+    fprintf (stderr, "\t0x%08x\n",  val22);
+    BITS (val22, 31, 16, "dest y1");
+    BITS (val22, 15, 0,  "dest x1");
+
+    fprintf (stderr, "\t0x%08x\n",  val23);
+    BITS (val23, 31, 16, "dest y2");
+    BITS (val23, 15, 0,  "dest x2");
+
+    /* The blit engine may produce unexpected results when these aren't met */
+    assert(BR22.field[0] < BR23.field[0]);
+    assert(BR22.field[1] < BR23.field[1]);
+}
+
+static void
+BR09 (struct debug_stream *stream,
+      uint32_t val)
+{
+    fprintf (stderr, "\t0x%08x -- dest address\n",  val);
+}
+
+static void
+BR26 (struct debug_stream *stream,
+      uint32_t val)
+{
+    fprintf (stderr, "\t0x%08x\n",  val);
+    BITS (val, 31, 16, "src y1");
+    BITS (val, 15, 0,  "src x1");
+}
+
+static void
+BR11 (struct debug_stream *stream,
+      uint32_t val)
+{
+    fprintf (stderr, "\t0x%08x\n",  val);
+    BITS (val, 15, 0,  "src pitch");
+}
+
+static void
+BR12 (struct debug_stream *stream,
+      uint32_t val)
+{
+    fprintf (stderr, "\t0x%08x -- src address\n",  val);
+}
+
+static void
+BR16 (struct debug_stream *stream,
+      uint32_t val)
+{
+    fprintf (stderr, "\t0x%08x -- color\n",  val);
+}
+
+static cairo_bool_t
+debug_copy_blit (struct debug_stream *stream,
+		 const char *name,
+		 uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    BR13(stream, ptr[j++]);
+    BR2223(stream, ptr[j], ptr[j+1]);
+    j += 2;
+    BR09(stream, ptr[j++]);
+    BR26(stream, ptr[j++]);
+    BR11(stream, ptr[j++]);
+    BR12(stream, ptr[j++]);
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_color_blit (struct debug_stream *stream,
+		  const char *name,
+		  uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    BR13(stream, ptr[j++]);
+    BR2223(stream, ptr[j], ptr[j+1]);
+    j += 2;
+    BR09(stream, ptr[j++]);
+    BR16(stream, ptr[j++]);
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_modes4 (struct debug_stream *stream,
+	      const char *name,
+	      uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j]);
+    BITS (ptr[j], 21, 18, "logicop func");
+    FLAG (ptr[j], 17, "stencil test mask modify-enable");
+    FLAG (ptr[j], 16, "stencil write mask modify-enable");
+    BITS (ptr[j], 15, 8, "stencil test mask");
+    BITS (ptr[j], 7, 0,  "stencil write mask");
+    fprintf (stderr, "\n");
+    j++;
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_map_state (struct debug_stream *stream,
+		 const char *name,
+		 uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    {
+	fprintf (stderr, "\t0x%08x\n",  ptr[j]);
+	BITS (ptr[j], 15, 0,   "map mask");
+	j++;
+    }
+
+    while (j < len) {
+	{
+	    fprintf (stderr, "\t  TMn.0: 0x%08x\n", ptr[j]);
+	    fprintf (stderr, "\t map address: 0x%08x\n", (ptr[j] & ~0x3));
+	    FLAG (ptr[j], 1, "vertical line stride");
+	    FLAG (ptr[j], 0, "vertical line stride offset");
+	    j++;
+	}
+
+	{
+	    fprintf (stderr, "\t  TMn.1: 0x%08x\n", ptr[j]);
+	    BITS (ptr[j], 31, 21, "height");
+	    BITS (ptr[j], 20, 10, "width");
+	    BITS (ptr[j], 9, 7, "surface format");
+	    BITS (ptr[j], 6, 3, "texel format");
+	    FLAG (ptr[j], 2, "use fence regs");
+	    FLAG (ptr[j], 1, "tiled surface");
+	    FLAG (ptr[j], 0, "tile walk ymajor");
+	    j++;
+	}
+	{
+	    fprintf (stderr, "\t  TMn.2: 0x%08x\n", ptr[j]);
+	    BITS (ptr[j], 31, 21, "dword pitch");
+	    BITS (ptr[j], 20, 15, "cube face enables");
+	    BITS (ptr[j], 14, 9, "max lod");
+	    FLAG (ptr[j], 8,     "mip layout right");
+	    BITS (ptr[j], 7, 0, "depth");
+	    j++;
+	}
+    }
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_sampler_state (struct debug_stream *stream,
+		     const char *name,
+		     uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    {
+	fprintf (stderr, "\t0x%08x\n",  ptr[j]);
+	BITS (ptr[j], 15, 0,   "sampler mask");
+	j++;
+    }
+
+    while (j < len) {
+	{
+	    fprintf (stderr, "\t  TSn.0: 0x%08x\n", ptr[j]);
+	    FLAG (ptr[j], 31, "reverse gamma");
+	    FLAG (ptr[j], 30, "planar to packed");
+	    FLAG (ptr[j], 29, "yuv->rgb");
+	    BITS (ptr[j], 28, 27, "chromakey index");
+	    BITS (ptr[j], 26, 22, "base mip level");
+	    BITS (ptr[j], 21, 20, "mip mode filter");
+	    BITS (ptr[j], 19, 17, "mag mode filter");
+	    BITS (ptr[j], 16, 14, "min mode filter");
+	    BITS (ptr[j], 13, 5,  "lod bias (s4.4)");
+	    FLAG (ptr[j], 4,      "shadow enable");
+	    FLAG (ptr[j], 3,      "max-aniso-4");
+	    BITS (ptr[j], 2, 0,   "shadow func");
+	    j++;
+	}
+
+	{
+	    fprintf (stderr, "\t  TSn.1: 0x%08x\n", ptr[j]);
+	    BITS (ptr[j], 31, 24, "min lod");
+	    MBZ( ptr[j], 23, 18 );
+	    FLAG (ptr[j], 17,     "kill pixel enable");
+	    FLAG (ptr[j], 16,     "keyed tex filter mode");
+	    FLAG (ptr[j], 15,     "chromakey enable");
+	    BITS (ptr[j], 14, 12, "tcx wrap mode");
+	    BITS (ptr[j], 11, 9,  "tcy wrap mode");
+	    BITS (ptr[j], 8,  6,  "tcz wrap mode");
+	    FLAG (ptr[j], 5,      "normalized coords");
+	    BITS (ptr[j], 4,  1,  "map (surface) index");
+	    FLAG (ptr[j], 0,      "EAST deinterlacer enable");
+	    j++;
+	}
+	{
+	    fprintf (stderr, "\t  TSn.2: 0x%08x  (default color)\n", ptr[j]);
+	    j++;
+	}
+    }
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t
+debug_dest_vars (struct debug_stream *stream,
+		 const char *name,
+		 uint32_t len)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    {
+	fprintf (stderr, "\t0x%08x\n",  ptr[j]);
+	FLAG (ptr[j], 31,     "early classic ztest");
+	FLAG (ptr[j], 30,     "opengl tex default color");
+	FLAG (ptr[j], 29,     "bypass iz");
+	FLAG (ptr[j], 28,     "lod preclamp");
+	BITS (ptr[j], 27, 26, "dither pattern");
+	FLAG (ptr[j], 25,     "linear gamma blend");
+	FLAG (ptr[j], 24,     "debug dither");
+	BITS (ptr[j], 23, 20, "dstorg x");
+	BITS (ptr[j], 19, 16, "dstorg y");
+	MBZ (ptr[j], 15, 15 );
+	BITS (ptr[j], 14, 12, "422 write select");
+	BITS (ptr[j], 11, 8,  "cbuf format");
+	BITS (ptr[j], 3, 2,   "zbuf format");
+	FLAG (ptr[j], 1,      "vert line stride");
+	FLAG (ptr[j], 1,      "vert line stride offset");
+	j++;
+    }
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t debug_buf_info( struct debug_stream *stream,
+				    const char *name,
+				    uint32_t len )
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t j = 0;
+
+    fprintf (stderr, "%04x:  ", stream->offset);
+    fprintf (stderr, "%s (%d dwords):\n", name, len);
+    fprintf (stderr, "\t0x%08x\n",  ptr[j++]);
+
+    {
+	fprintf (stderr, "\t0x%08x\n",  ptr[j]);
+	BITS (ptr[j], 28, 28, "aux buffer id");
+	BITS (ptr[j], 27, 24, "buffer id (7=depth, 3=back)");
+	FLAG (ptr[j], 23,     "use fence regs");
+	FLAG (ptr[j], 22,     "tiled surface");
+	FLAG (ptr[j], 21,     "tile walk ymajor");
+	MBZ (ptr[j], 20, 14);
+	BITS (ptr[j], 13, 2,  "dword pitch");
+	MBZ (ptr[j], 2,  0);
+	j++;
+    }
+
+    fprintf (stderr, "\t0x%08x -- buffer base address\n",  ptr[j++]);
+
+    stream->offset += len * sizeof(uint32_t);
+    assert(j == len);
+    return TRUE;
+}
+
+static cairo_bool_t
+decode_3d_i915 (struct debug_stream *stream)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t cmd = *ptr;
+
+    switch ((cmd >> 24) & 0x1f) {
+    case 0x6:
+	return debug (stream, "3DSTATE_ANTI_ALIASING", 1);
+    case 0x7:
+	return debug (stream, "3DSTATE_RASTERIZATION_RULES", 1);
+    case 0x8:
+	return debug (stream, "3DSTATE_BACKFACE_STENCIL_OPS", 1);
+    case 0x9:
+	return debug (stream, "3DSTATE_BACKFACE_STENCIL_MASKS", 1);
+    case 0xb:
+	return debug (stream, "3DSTATE_INDEPENDENT_ALPHA_BLEND", 1);
+    case 0xc:
+	return debug (stream, "3DSTATE_MODES5", 1);
+    case 0xd:
+	return debug_modes4(stream, "3DSTATE_MODES4", 1);
+    case 0x15:
+	return debug (stream, "3DSTATE_FOG_COLOR", 1);
+    case 0x16:
+	return debug (stream, "3DSTATE_COORD_SET_BINDINGS", 1);
+    case 0x1c:
+	/* 3DState16NP */
+	switch((cmd >> 19) & 0x1f) {
+	case 0x10:
+	    return debug (stream, "3DSTATE_SCISSOR_ENABLE", 1);
+	case 0x11:
+	    return debug (stream, "3DSTATE_DEPTH_SUBRECTANGLE_DISABLE", 1);
+	default:
+	    break;
+	}
+	break;
+    case 0x1d:
+	/* 3DStateMW */
+	switch ((cmd >> 16) & 0xff) {
+	case 0x0:
+	    return debug_map_state(stream, "3DSTATE_MAP_STATE", (cmd & 0x1f) + 2);
+	case 0x1:
+	    return debug_sampler_state(stream, "3DSTATE_SAMPLER_STATE", (cmd & 0x1f) + 2);
+	case 0x4:
+	    return debug_load_immediate(stream, "3DSTATE_LOAD_STATE_IMMEDIATE", (cmd & 0xf) + 2);
+	case 0x5:
+	    return debug_program(stream, "3DSTATE_PIXEL_SHADER_PROGRAM", (cmd & 0x1ff) + 2);
+	case 0x6:
+	    return debug (stream, "3DSTATE_PIXEL_SHADER_CONSTANTS", (cmd & 0xff) + 2);
+	case 0x7:
+	    return debug_load_indirect(stream, "3DSTATE_LOAD_INDIRECT", (cmd & 0xff) + 2);
+	case 0x80:
+	    return debug (stream, "3DSTATE_DRAWING_RECTANGLE", (cmd & 0xffff) + 2);
+	case 0x81:
+	    return debug (stream, "3DSTATE_SCISSOR_RECTANGLE", (cmd & 0xffff) + 2);
+	case 0x83:
+	    return debug (stream, "3DSTATE_SPAN_STIPPLE", (cmd & 0xffff) + 2);
+	case 0x85:
+	    return debug_dest_vars(stream, "3DSTATE_DEST_BUFFER_VARS", (cmd & 0xffff) + 2);
+	case 0x88:
+	    return debug (stream, "3DSTATE_CONSTANT_BLEND_COLOR", (cmd & 0xffff) + 2);
+	case 0x89:
+	    return debug (stream, "3DSTATE_FOG_MODE", (cmd & 0xffff) + 2);
+	case 0x8e:
+	    return debug_buf_info(stream, "3DSTATE_BUFFER_INFO", (cmd & 0xffff) + 2);
+	case 0x97:
+	    return debug (stream, "3DSTATE_DEPTH_OFFSET_SCALE", (cmd & 0xffff) + 2);
+	case 0x98:
+	    return debug (stream, "3DSTATE_DEFAULT_Z", (cmd & 0xffff) + 2);
+	case 0x99:
+	    return debug (stream, "3DSTATE_DEFAULT_DIFFUSE", (cmd & 0xffff) + 2);
+	case 0x9a:
+	    return debug (stream, "3DSTATE_DEFAULT_SPECULAR", (cmd & 0xffff) + 2);
+	case 0x9c:
+	    return debug (stream, "3DSTATE_CLEAR_PARAMETERS", (cmd & 0xffff) + 2);
+	default:
+	    ASSERT_NOT_REACHED;
+	    return 0;
+	}
+	break;
+    case 0x1e:
+	if (cmd & (1 << 23))
+	    return debug (stream, "???", (cmd & 0xffff) + 1);
+	else
+	    return debug (stream, "", 1);
+	break;
+    case 0x1f:
+	if ((cmd & (1 << 23)) == 0) {
+	    return debug_prim (stream, "3DPRIM (inline)", 1, (cmd & 0x1ffff) + 2);
+	} else if (cmd & (1 << 17)) {
+	    if ((cmd & 0xffff) == 0)
+		return debug_variable_length_prim (stream);
+	    else
+		return debug_prim (stream, "3DPRIM (indexed)", 0, (((cmd & 0xffff) + 1) / 2) + 1);
+	} else
+	    return debug_prim (stream, "3DPRIM  (indirect sequential)", 0, 2);
+	break;
+    default:
+	return debug (stream, "", 0);
+    }
+
+    return FALSE;
+}
+
+static cairo_bool_t
+decode_3d_i965 (struct debug_stream *stream)
+{
+    const uint32_t *data = (uint32_t *) (stream->ptr + stream->offset);
+    const uint32_t opcode = (data[0] & 0xffff0000) >> 16;
+    unsigned int idx;
+    const struct {
+	uint32_t opcode;
+	int min_len;
+	int max_len;
+	const char *name;
+    } opcodes_3d[] = {
+	{ 0x6000, 3, 3, "URB_FENCE" },
+	{ 0x6001, 2, 2, "CS_URB_STATE" },
+	{ 0x6002, 2, 2, "CONSTANT_BUFFER" },
+	{ 0x6101, 6, 6, "STATE_BASE_ADDRESS" },
+	{ 0x6102, 2, 2 , "STATE_SIP" },
+	{ 0x6104, 1, 1, "3DSTATE_PIPELINE_SELECT" },
+	{ 0x680b, 1, 1, "3DSTATE_VF_STATISTICS" },
+	{ 0x6904, 1, 1, "3DSTATE_PIPELINE_SELECT" },
+	{ 0x7800, 7, 7, "3DSTATE_PIPELINED_POINTERS" },
+	{ 0x7801, 6, 6, "3DSTATE_BINDING_TABLE_POINTERS" },
+	{ 0x780b, 1, 1, "3DSTATE_VF_STATISTICS" },
+	{ 0x7808, 5, 257, "3DSTATE_VERTEX_BUFFERS" },
+	{ 0x7809, 3, 256, "3DSTATE_VERTEX_ELEMENTS" },
+	{ 0x780a, 3, 3, "3DSTATE_INDEX_BUFFER" },
+	{ 0x7900, 4, 4, "3DSTATE_DRAWING_RECTANGLE" },
+	{ 0x7901, 5, 5, "3DSTATE_CONSTANT_COLOR" },
+	{ 0x7905, 5, 7, "3DSTATE_DEPTH_BUFFER" },
+	{ 0x7906, 2, 2, "3DSTATE_POLY_STIPPLE_OFFSET" },
+	{ 0x7907, 33, 33, "3DSTATE_POLY_STIPPLE_PATTERN" },
+	{ 0x7908, 3, 3, "3DSTATE_LINE_STIPPLE" },
+	{ 0x7909, 2, 2, "3DSTATE_GLOBAL_DEPTH_OFFSET_CLAMP" },
+	{ 0x790a, 3, 3, "3DSTATE_AA_LINE_PARAMETERS" },
+	{ 0x7b00, 6, 6, "3DPRIMITIVE" },
+    }, *opcode_3d;
+
+    for (idx = 0; idx < ARRAY_LENGTH (opcodes_3d); idx++) {
+	opcode_3d = &opcodes_3d[idx];
+	if (opcode == opcode_3d->opcode) {
+	    unsigned int len = 1;
+	    if (opcode_3d->max_len != 1)
+		len = (data[0] & 0x000000ff) + 2;
+	    return debug (stream, opcode_3d->name, len);
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_bool_t
+decode_3d_i830 (struct debug_stream *stream)
+{
+    ASSERT_NOT_REACHED;
+    return FALSE;
+}
+
+static cairo_bool_t
+i915_debug_packet (struct debug_stream *stream,
+		   int devid)
+{
+    uint32_t *ptr = (uint32_t *)(stream->ptr + stream->offset);
+    uint32_t cmd = *ptr;
+
+    switch (((cmd >> 29) & 0x7)) {
+    case 0x0:
+	switch ((cmd >> 23) & 0x3f) {
+	case 0x0:
+	    return debug (stream, "MI_NOOP", 1);
+	case 0x3:
+	    return debug (stream, "MI_WAIT_FOR_EVENT", 1);
+	case 0x4:
+	    return debug (stream, "MI_FLUSH", 1);
+	case 0xA:
+	    debug (stream, "MI_BATCH_BUFFER_END", 1);
+	    return FALSE;
+	case 0x22:
+	    return debug (stream, "MI_LOAD_REGISTER_IMM", 3);
+	case 0x31:
+	    return debug_chain(stream, "MI_BATCH_BUFFER_START", 2);
+	default:
+	    break;
+	}
+	break;
+    case 0x1:
+	break;
+    case 0x2:
+	switch ((cmd >> 22) & 0xff) {
+	case 0x50:
+	    return debug_color_blit(stream, "XY_COLOR_BLT", (cmd & 0xff) + 2);
+	case 0x53:
+	    return debug_copy_blit(stream, "XY_SRC_COPY_BLT", (cmd & 0xff) + 2);
+	default:
+	    return debug (stream, "blit command", (cmd & 0xff) + 2);
+	}
+	break;
+    case 0x3:
+	if (IS_965(devid))
+	    return decode_3d_i965 (stream);
+	else if (IS_9XX(devid))
+	    return decode_3d_i915 (stream);
+	else
+	    return decode_3d_i830 (stream);
+    default:
+	break;
+    }
+
+    fprintf (stderr, "Bogus cmd: %x [%x]\n", (cmd >> 29) & 7, cmd);
+    ASSERT_NOT_REACHED;
+    return 0;
+}
+
+void
+intel_dump_batchbuffer (const void *batch,
+			uint32_t length,
+			int devid)
+{
+    struct debug_stream stream;
+    cairo_bool_t done = FALSE;
+
+    fprintf (stderr, "\nBATCH: (%d dwords)\n", length / 4);
+
+    stream.offset = 0;
+    stream.ptr = batch;
+
+    while (! done && stream.offset < length) {
+	if (! i915_debug_packet (&stream, devid))
+	    break;
+
+	assert (stream.offset <= length);
+    }
+
+    fprintf (stderr, "END-BATCH\n\n");
+    fflush (stderr);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-ioctl-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-ioctl-private.h
new file mode 100644
index 0000000..4a766d7
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-ioctl-private.h
@@ -0,0 +1,45 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#ifndef CAIRO_DRM_INTEL_IOCTL_PRIVATE_H
+#define CAIRO_DRM_INTEL_IOCTL_PRIVATE_H
+
+#include "cairo-drm-intel-command-private.h"
+
+#include <drm/i915_drm.h>
+
+struct drm_i915_gem_real_size {
+	uint32_t handle;
+	uint64_t size;
+};
+
+#define DRM_I915_GEM_REAL_SIZE	0x2a
+#define DRM_IOCTL_I915_GEM_REAL_SIZE	DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_REAL_SIZE, struct drm_i915_gem_real_size)
+
+#endif /* CAIRO_DRM_INTEL_IOCTL_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-private.h
new file mode 100644
index 0000000..0cfded1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-private.h
@@ -0,0 +1,515 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#ifndef CAIRO_DRM_INTEL_PRIVATE_H
+#define CAIRO_DRM_INTEL_PRIVATE_H
+
+#include "cairoint.h"
+#include "cairo-cache-private.h"
+#include "cairo-compiler-private.h"
+#include "cairo-drm-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-list-private.h"
+#include "cairo-mutex-private.h"
+#include "cairo-rtree-private.h"
+#include "cairo-types-private.h"
+#include "cairo-pattern-private.h"
+
+#include "cairo-drm-intel-ioctl-private.h"
+
+#define INTEL_TILING_DEFAULT I915_TILING_Y
+
+#define INTEL_BO_CACHE_BUCKETS 12 /* cache surfaces up to 16 MiB */
+
+#define INTEL_GLYPH_CACHE_WIDTH 1024
+#define INTEL_GLYPH_CACHE_HEIGHT 1024
+#define INTEL_GLYPH_CACHE_MIN_SIZE 1
+#define INTEL_GLYPH_CACHE_MAX_SIZE 128
+
+typedef struct _intel_bo {
+    cairo_drm_bo_t base;
+
+    cairo_list_t link;
+    cairo_list_t cache_list;
+
+    uint32_t offset;
+    uint32_t batch_read_domains;
+    uint32_t batch_write_domain;
+
+    uint32_t opaque0;
+    uint32_t opaque1;
+
+    uint32_t full_size;
+    uint16_t stride;
+    uint16_t _stride;
+    uint32_t tiling :4;
+    uint32_t _tiling :4;
+    uint32_t purgeable :1;
+    uint32_t busy :1;
+    uint32_t cpu :1;
+
+    struct drm_i915_gem_exec_object2 *exec;
+    void *virtual;
+} intel_bo_t;
+
+#define INTEL_BATCH_SIZE (64*1024)
+#define INTEL_VERTEX_BUFFER_SIZE (512*1024)
+#define INTEL_MAX_RELOCS 2048
+
+static inline void
+intel_bo_mark_purgeable (intel_bo_t *bo)
+{
+    if (bo->base.name == 0)
+	bo->purgeable = 1;
+}
+
+typedef struct _intel_vertex_buffer intel_vertex_buffer_t;
+
+typedef void (*intel_vertex_buffer_new_func_t) (intel_vertex_buffer_t *vertex_buffer);
+typedef void (*intel_vertex_buffer_start_rectangles_func_t) (intel_vertex_buffer_t *vertex_buffer,
+							     uint32_t floats_per_vertex);
+typedef void (*intel_vertex_buffer_flush_func_t) (intel_vertex_buffer_t *vertex_buffer);
+typedef void (*intel_vertex_buffer_finish_func_t) (intel_vertex_buffer_t *vertex_buffer);
+
+struct _intel_vertex_buffer {
+    uint32_t vbo_batch; /* reloc position in batch, 0 -> not yet allocated */
+    uint32_t vbo_offset;
+    uint32_t vbo_used;
+
+    uint32_t vertex_index;
+    uint32_t vertex_count;
+
+    uint32_t floats_per_vertex;
+    uint32_t rectangle_size;
+
+    intel_bo_t *last_vbo;
+    uint32_t last_vbo_offset;
+    uint32_t last_vbo_space;
+
+    intel_vertex_buffer_new_func_t new;
+    intel_vertex_buffer_start_rectangles_func_t start_rectangles;
+    intel_vertex_buffer_flush_func_t flush;
+    intel_vertex_buffer_finish_func_t finish;
+
+    uint32_t base[INTEL_VERTEX_BUFFER_SIZE / sizeof (uint32_t)];
+};
+
+typedef struct _intel_batch intel_batch_t;
+
+typedef void (*intel_batch_commit_func_t) (intel_batch_t *batch);
+typedef void (*intel_batch_reset_func_t) (intel_batch_t *batch);
+
+struct _intel_batch {
+    size_t gtt_size;
+    size_t gtt_avail_size;
+
+    intel_batch_commit_func_t commit;
+    intel_batch_reset_func_t reset;
+
+    uint16_t exec_count;
+    uint16_t reloc_count;
+    uint16_t used;
+    uint16_t header;
+
+    intel_bo_t *target_bo[INTEL_MAX_RELOCS];
+    struct drm_i915_gem_exec_object2 exec[INTEL_MAX_RELOCS];
+    struct drm_i915_gem_relocation_entry reloc[INTEL_MAX_RELOCS];
+
+    uint32_t base[INTEL_BATCH_SIZE / sizeof (uint32_t)];
+
+    intel_vertex_buffer_t vertex_buffer;
+};
+
+typedef struct _intel_buffer {
+    intel_bo_t *bo;
+    uint32_t offset;
+    cairo_format_t format;
+    uint32_t map0, map1;
+    uint32_t width;
+    uint32_t height;
+    uint32_t stride;
+} intel_buffer_t;
+
+typedef struct _intel_buffer_cache {
+    int ref_count;
+    intel_buffer_t buffer;
+    cairo_rtree_t rtree;
+    cairo_list_t link;
+} intel_buffer_cache_t;
+
+typedef struct _intel_glyph {
+    cairo_rtree_node_t node;
+    intel_buffer_cache_t *cache;
+    void **owner;
+    float texcoord[3];
+    int width, height;
+} intel_glyph_t;
+
+typedef struct _intel_gradient_cache {
+    cairo_pattern_union_t pattern;
+    intel_buffer_t buffer;
+} intel_gradient_cache_t;
+#define GRADIENT_CACHE_SIZE 16
+
+typedef struct _intel_surface {
+    cairo_drm_surface_t drm;
+
+    cairo_cache_entry_t snapshot_cache_entry;
+} intel_surface_t;
+
+typedef void (*intel_reset_context_func_t) (void *device);
+
+typedef struct _intel_device {
+    cairo_drm_device_t base;
+
+    size_t gtt_max_size;
+    size_t gtt_avail_size;
+
+    cairo_freepool_t bo_pool;
+    cairo_list_t bo_in_flight;
+
+    cairo_mutex_t mutex;
+    intel_batch_t batch;
+
+    intel_buffer_cache_t glyph_cache[2];
+    cairo_list_t fonts;
+
+    struct {
+	intel_gradient_cache_t cache[GRADIENT_CACHE_SIZE];
+	unsigned int size;
+    } gradient_cache;
+
+    cairo_cache_t snapshot_cache;
+    size_t snapshot_cache_max_size;
+
+    intel_reset_context_func_t reset_context;
+
+    cairo_status_t (*flush) (struct _intel_device *);
+} intel_device_t;
+
+static inline intel_device_t *
+to_intel_device (cairo_device_t *base)
+{
+    return (intel_device_t *) base;
+}
+
+static inline intel_bo_t *
+to_intel_bo (cairo_drm_bo_t *base)
+{
+    return (intel_bo_t *) base;
+}
+
+static inline intel_bo_t *
+intel_bo_reference (intel_bo_t *bo)
+{
+    return to_intel_bo (cairo_drm_bo_reference (&bo->base));
+}
+
+cairo_private cairo_bool_t
+intel_bo_madvise (intel_device_t *device, intel_bo_t *bo, int madv);
+
+static cairo_always_inline void
+intel_bo_destroy (intel_device_t *device, intel_bo_t *bo)
+{
+    cairo_drm_bo_destroy (&device->base.base, &bo->base);
+}
+
+static inline void
+intel_bo_in_flight_add (intel_device_t *device,
+			intel_bo_t *bo)
+{
+    if (bo->base.name == 0 && bo->exec != NULL && cairo_list_is_empty (&bo->cache_list))
+	cairo_list_add (&bo->cache_list, &device->bo_in_flight);
+}
+
+cairo_private int
+intel_get (int fd, int param);
+
+cairo_private cairo_bool_t
+intel_info (int fd, uint64_t *gtt_size);
+
+cairo_private cairo_status_t
+intel_device_init (intel_device_t *device, int fd);
+
+cairo_private void
+intel_device_fini (intel_device_t *dev);
+
+cairo_private intel_bo_t *
+intel_bo_create (intel_device_t *dev,
+	         uint32_t max_size,
+	         uint32_t real_size,
+	         cairo_bool_t gpu_target,
+		 uint32_t tiling,
+		 uint32_t stride);
+
+cairo_private intel_bo_t *
+intel_bo_create_for_name (intel_device_t *dev, uint32_t name);
+
+cairo_private void
+intel_bo_set_tiling (const intel_device_t *dev,
+	             intel_bo_t *bo);
+
+cairo_private cairo_bool_t
+intel_bo_is_inactive (const intel_device_t *device,
+		      intel_bo_t *bo);
+
+cairo_private cairo_bool_t
+intel_bo_wait (const intel_device_t *device, const intel_bo_t *bo);
+
+cairo_private void
+intel_bo_write (const intel_device_t *dev,
+		intel_bo_t *bo,
+		unsigned long offset,
+		unsigned long size,
+		const void *data);
+
+cairo_private void
+intel_bo_read (const intel_device_t *dev,
+	       intel_bo_t *bo,
+	       unsigned long offset,
+	       unsigned long size,
+	       void *data);
+
+cairo_private void *
+intel_bo_map (const intel_device_t *dev, intel_bo_t *bo);
+
+cairo_private void
+intel_bo_unmap (intel_bo_t *bo);
+
+cairo_private cairo_status_t
+intel_bo_init (const intel_device_t *dev,
+	       intel_bo_t *bo,
+	       uint32_t size,
+	       uint32_t initial_domain);
+
+cairo_private cairo_status_t
+intel_bo_init_for_name (const intel_device_t *dev,
+			intel_bo_t *bo,
+			uint32_t size,
+			uint32_t name);
+
+cairo_private cairo_status_t
+intel_bo_put_image (intel_device_t *dev,
+		    intel_bo_t *bo,
+		    cairo_image_surface_t *src,
+		    int src_x, int src_y,
+		    int width, int height,
+		    int dst_x, int dst_y);
+
+cairo_private void
+intel_surface_init (intel_surface_t *surface,
+		    const cairo_surface_backend_t *backend,
+		    cairo_drm_device_t *device,
+		    cairo_format_t format,
+		    int width, int height);
+
+cairo_private cairo_status_t
+intel_buffer_cache_init (intel_buffer_cache_t *cache,
+		        intel_device_t *device,
+			cairo_format_t format,
+			int width, int height);
+
+cairo_private cairo_status_t
+intel_gradient_render (intel_device_t *device,
+		       const cairo_gradient_pattern_t *pattern,
+		       intel_buffer_t *buffer);
+
+cairo_private cairo_int_status_t
+intel_get_glyph (intel_device_t *device,
+		 cairo_scaled_font_t *scaled_font,
+		 cairo_scaled_glyph_t *scaled_glyph);
+
+cairo_private void
+intel_scaled_glyph_fini (cairo_scaled_glyph_t *scaled_glyph,
+			 cairo_scaled_font_t  *scaled_font);
+
+cairo_private void
+intel_scaled_font_fini (cairo_scaled_font_t *scaled_font);
+
+cairo_private void
+intel_glyph_cache_unpin (intel_device_t *device);
+
+static inline intel_glyph_t *
+intel_glyph_pin (intel_glyph_t *glyph)
+{
+    cairo_rtree_node_t *node = &glyph->node;
+    if (unlikely (node->pinned == 0))
+	return _cairo_rtree_pin (&glyph->cache->rtree, node);
+    return glyph;
+}
+
+cairo_private cairo_status_t
+intel_snapshot_cache_insert (intel_device_t *device,
+			     intel_surface_t *surface);
+
+cairo_private void
+intel_surface_detach_snapshot (cairo_surface_t *abstract_surface);
+
+cairo_private void
+intel_snapshot_cache_thaw (intel_device_t *device);
+
+cairo_private void
+intel_throttle (intel_device_t *device);
+
+cairo_private cairo_status_t
+intel_surface_acquire_source_image (void *abstract_surface,
+				    cairo_image_surface_t **image_out,
+				    void **image_extra);
+
+cairo_private void
+intel_surface_release_source_image (void *abstract_surface,
+				    cairo_image_surface_t *image,
+				    void *image_extra);
+cairo_private cairo_surface_t *
+intel_surface_map_to_image (void *abstract_surface);
+
+cairo_private cairo_status_t
+intel_surface_flush (void *abstract_surface,
+		     unsigned flags);
+
+cairo_private cairo_status_t
+intel_surface_finish (void *abstract_surface);
+
+cairo_private void
+intel_dump_batchbuffer (const void *batch,
+			uint32_t length,
+			int devid);
+
+static inline uint32_t cairo_const
+MS3_tiling (uint32_t tiling)
+{
+    switch (tiling) {
+    default:
+    case I915_TILING_NONE: return 0;
+    case I915_TILING_X: return MS3_TILED_SURFACE;
+    case I915_TILING_Y: return MS3_TILED_SURFACE | MS3_TILE_WALK;
+    }
+}
+
+static inline float cairo_const
+texcoord_2d_16 (double x, double y)
+{
+    union {
+	uint32_t ui;
+	float f;
+    } u;
+    u.ui = (_cairo_half_from_float (y) << 16) | _cairo_half_from_float (x);
+    return u.f;
+}
+
+#define PCI_CHIP_I810			0x7121
+#define PCI_CHIP_I810_DC100		0x7123
+#define PCI_CHIP_I810_E			0x7125
+#define PCI_CHIP_I815			0x1132
+
+#define PCI_CHIP_I830_M			0x3577
+#define PCI_CHIP_845_G			0x2562
+#define PCI_CHIP_I855_GM		0x3582
+#define PCI_CHIP_I865_G			0x2572
+
+#define PCI_CHIP_I915_G			0x2582
+#define PCI_CHIP_E7221_G		0x258A
+#define PCI_CHIP_I915_GM		0x2592
+#define PCI_CHIP_I945_G			0x2772
+#define PCI_CHIP_I945_GM		0x27A2
+#define PCI_CHIP_I945_GME		0x27AE
+
+#define PCI_CHIP_Q35_G			0x29B2
+#define PCI_CHIP_G33_G			0x29C2
+#define PCI_CHIP_Q33_G			0x29D2
+
+#define PCI_CHIP_IGD_GM			0xA011
+#define PCI_CHIP_IGD_G			0xA001
+
+#define IS_IGDGM(devid)	(devid == PCI_CHIP_IGD_GM)
+#define IS_IGDG(devid)	(devid == PCI_CHIP_IGD_G)
+#define IS_IGD(devid) (IS_IGDG(devid) || IS_IGDGM(devid))
+
+#define PCI_CHIP_I965_G			0x29A2
+#define PCI_CHIP_I965_Q			0x2992
+#define PCI_CHIP_I965_G_1		0x2982
+#define PCI_CHIP_I946_GZ		0x2972
+#define PCI_CHIP_I965_GM                0x2A02
+#define PCI_CHIP_I965_GME               0x2A12
+
+#define PCI_CHIP_GM45_GM                0x2A42
+
+#define PCI_CHIP_IGD_E_G                0x2E02
+#define PCI_CHIP_Q45_G                  0x2E12
+#define PCI_CHIP_G45_G                  0x2E22
+#define PCI_CHIP_G41_G                  0x2E32
+
+#define PCI_CHIP_ILD_G                  0x0042
+#define PCI_CHIP_ILM_G                  0x0046
+
+#define IS_MOBILE(devid)	(devid == PCI_CHIP_I855_GM || \
+				 devid == PCI_CHIP_I915_GM || \
+				 devid == PCI_CHIP_I945_GM || \
+				 devid == PCI_CHIP_I945_GME || \
+				 devid == PCI_CHIP_I965_GM || \
+				 devid == PCI_CHIP_I965_GME || \
+				 devid == PCI_CHIP_GM45_GM || IS_IGD(devid))
+
+#define IS_G45(devid)           (devid == PCI_CHIP_IGD_E_G || \
+                                 devid == PCI_CHIP_Q45_G || \
+                                 devid == PCI_CHIP_G45_G || \
+                                 devid == PCI_CHIP_G41_G)
+#define IS_GM45(devid)          (devid == PCI_CHIP_GM45_GM)
+#define IS_G4X(devid)		(IS_G45(devid) || IS_GM45(devid))
+
+#define IS_ILD(devid)           (devid == PCI_CHIP_ILD_G)
+#define IS_ILM(devid)           (devid == PCI_CHIP_ILM_G)
+#define IS_IRONLAKE(devid)      (IS_ILD(devid) || IS_ILM(devid))
+
+#define IS_915(devid)		(devid == PCI_CHIP_I915_G || \
+				 devid == PCI_CHIP_E7221_G || \
+				 devid == PCI_CHIP_I915_GM)
+
+#define IS_945(devid)		(devid == PCI_CHIP_I945_G || \
+				 devid == PCI_CHIP_I945_GM || \
+				 devid == PCI_CHIP_I945_GME || \
+				 devid == PCI_CHIP_G33_G || \
+				 devid == PCI_CHIP_Q33_G || \
+				 devid == PCI_CHIP_Q35_G || IS_IGD(devid))
+
+#define IS_965(devid)		(devid == PCI_CHIP_I965_G || \
+				 devid == PCI_CHIP_I965_Q || \
+				 devid == PCI_CHIP_I965_G_1 || \
+				 devid == PCI_CHIP_I965_GM || \
+				 devid == PCI_CHIP_I965_GME || \
+				 devid == PCI_CHIP_I946_GZ || \
+				 IS_G4X(devid) || \
+				 IS_IRONLAKE(devid))
+
+#define IS_9XX(devid)		(IS_915(devid) || \
+				 IS_945(devid) || \
+				 IS_965(devid))
+
+
+#endif /* CAIRO_DRM_INTEL_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel-surface.c b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-surface.c
new file mode 100644
index 0000000..8fe2c3a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel-surface.c
@@ -0,0 +1,454 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-intel-private.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+
+/* Basic generic/stub surface for intel chipsets */
+
+#define MAX_SIZE 2048
+
+static cairo_surface_t *
+intel_surface_create_similar (void			*abstract_surface,
+			      cairo_content_t	 content,
+			      int			 width,
+			      int			 height)
+{
+    return cairo_image_surface_create (_cairo_format_from_content (content),
+				       width, height);
+}
+
+cairo_status_t
+intel_surface_finish (void *abstract_surface)
+{
+    intel_surface_t *surface = abstract_surface;
+
+    intel_bo_in_flight_add (to_intel_device (surface->drm.base.device),
+			    to_intel_bo (surface->drm.bo));
+    return _cairo_drm_surface_finish (&surface->drm);
+}
+
+static void
+surface_finish_and_destroy (cairo_surface_t *surface)
+{
+    cairo_surface_finish (surface);
+    cairo_surface_destroy (surface);
+}
+
+cairo_status_t
+intel_surface_acquire_source_image (void *abstract_surface,
+				    cairo_image_surface_t **image_out,
+				    void **image_extra)
+{
+    intel_surface_t *surface = abstract_surface;
+    cairo_surface_t *image;
+    cairo_status_t status;
+    void *ptr;
+
+    if (surface->drm.fallback != NULL) {
+	image = surface->drm.fallback;
+	goto DONE;
+    }
+
+    image = _cairo_surface_has_snapshot (&surface->drm.base,
+	                                 &_cairo_image_surface_backend);
+    if (image != NULL)
+	goto DONE;
+
+    if (surface->drm.base.backend->flush != NULL) {
+	status = surface->drm.base.backend->flush (surface);
+	if (unlikely (status))
+	    return status;
+    }
+
+    ptr = intel_bo_map (to_intel_device (surface->drm.base.device),
+			to_intel_bo (surface->drm.bo));
+    if (unlikely (ptr == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    image = cairo_image_surface_create_for_data (ptr,
+						 surface->drm.format,
+						 surface->drm.width,
+						 surface->drm.height,
+						 surface->drm.stride);
+    if (unlikely (image->status))
+	return image->status;
+
+    _cairo_surface_attach_snapshot (&surface->drm.base, image, surface_finish_and_destroy);
+
+DONE:
+    *image_out = (cairo_image_surface_t *) cairo_surface_reference (image);
+    *image_extra = NULL;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+intel_surface_release_source_image (void *abstract_surface,
+				    cairo_image_surface_t *image,
+				    void *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+cairo_surface_t *
+intel_surface_map_to_image (void *abstract_surface)
+{
+    intel_surface_t *surface = abstract_surface;
+
+    if (surface->drm.fallback == NULL) {
+	cairo_surface_t *image;
+	cairo_status_t status;
+	void *ptr;
+
+	if (surface->drm.base.backend->flush != NULL) {
+	    status = surface->drm.base.backend->flush (surface);
+	    if (unlikely (status))
+		return _cairo_surface_create_in_error (status);
+	}
+
+	ptr = intel_bo_map (to_intel_device (surface->drm.base.device),
+			    to_intel_bo (surface->drm.bo));
+	if (unlikely (ptr == NULL))
+	    return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+	image = cairo_image_surface_create_for_data (ptr,
+						     surface->drm.format,
+						     surface->drm.width,
+						     surface->drm.height,
+						     surface->drm.stride);
+	if (unlikely (image->status))
+	    return image;
+
+	surface->drm.fallback = image;
+    }
+
+    return surface->drm.fallback;
+}
+
+cairo_status_t
+intel_surface_flush (void *abstract_surface, unsigned flags)
+{
+    intel_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->drm.fallback == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* kill any outstanding maps */
+    cairo_surface_finish (surface->drm.fallback);
+
+    status = cairo_surface_status (surface->drm.fallback);
+    cairo_surface_destroy (surface->drm.fallback);
+    surface->drm.fallback = NULL;
+
+    return status;
+}
+
+static cairo_int_status_t
+intel_surface_paint (void *abstract_surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_clip_t		*clip)
+{
+    return _cairo_surface_paint (intel_surface_map_to_image (abstract_surface),
+				 op, source, clip);
+}
+
+static cairo_int_status_t
+intel_surface_mask (void			*abstract_surface,
+		    cairo_operator_t		 op,
+		    const cairo_pattern_t	*source,
+		    const cairo_pattern_t	*mask,
+		    cairo_clip_t		*clip)
+{
+    return _cairo_surface_mask (intel_surface_map_to_image (abstract_surface),
+				op, source, mask, clip);
+}
+
+static cairo_int_status_t
+intel_surface_stroke (void			*abstract_surface,
+		      cairo_operator_t		 op,
+		      const cairo_pattern_t	*source,
+		      cairo_path_fixed_t	*path,
+		      const cairo_stroke_style_t	*stroke_style,
+		      const cairo_matrix_t		*ctm,
+		      const cairo_matrix_t		*ctm_inverse,
+		      double			 tolerance,
+		      cairo_antialias_t		 antialias,
+		      cairo_clip_t		*clip)
+{
+    return _cairo_surface_stroke (intel_surface_map_to_image (abstract_surface),
+				  op, source, path, stroke_style, ctm, ctm_inverse,
+				  tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+intel_surface_fill (void			*abstract_surface,
+		    cairo_operator_t		 op,
+		    const cairo_pattern_t	*source,
+		    cairo_path_fixed_t		*path,
+		    cairo_fill_rule_t		 fill_rule,
+		    double			 tolerance,
+		    cairo_antialias_t		 antialias,
+		    cairo_clip_t		*clip)
+{
+    return _cairo_surface_fill (intel_surface_map_to_image (abstract_surface),
+				op, source, path, fill_rule,
+				tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+intel_surface_glyphs (void			*abstract_surface,
+		      cairo_operator_t		 op,
+		      const cairo_pattern_t	*source,
+		      cairo_glyph_t		*glyphs,
+		      int			 num_glyphs,
+		      cairo_scaled_font_t	*scaled_font,
+		      cairo_clip_t		*clip,
+		      int *num_remaining)
+{
+    *num_remaining = 0;
+    return _cairo_surface_show_text_glyphs (intel_surface_map_to_image (abstract_surface),
+					    op, source,
+					    NULL, 0,
+					    glyphs, num_glyphs,
+					    NULL, 0, 0,
+					    scaled_font, clip);
+}
+
+static const cairo_surface_backend_t intel_surface_backend = {
+    CAIRO_SURFACE_TYPE_DRM,
+    _cairo_default_context_create,
+
+    intel_surface_create_similar,
+    intel_surface_finish,
+
+    NULL,
+    intel_surface_acquire_source_image,
+    intel_surface_release_source_image,
+
+    NULL, NULL, NULL,
+    NULL, /* composite */
+    NULL, /* fill */
+    NULL, /* trapezoids */
+    NULL, /* span */
+    NULL, /* check-span */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_drm_surface_get_extents,
+    NULL, /* old-glyphs */
+    _cairo_drm_surface_get_font_options,
+
+    intel_surface_flush,
+    NULL, /* mark dirty */
+    NULL, NULL, /* font/glyph fini */
+
+    intel_surface_paint,
+    intel_surface_mask,
+    intel_surface_stroke,
+    intel_surface_fill,
+    intel_surface_glyphs,
+};
+
+void
+intel_surface_init (intel_surface_t *surface,
+		    const cairo_surface_backend_t *backend,
+		    cairo_drm_device_t *device,
+		    cairo_format_t format,
+		    int width, int height)
+{
+    _cairo_surface_init (&surface->drm.base,
+			 backend,
+			 &device->base,
+			 _cairo_content_from_format (format),
+			 FALSE);
+
+    _cairo_drm_surface_init (&surface->drm, format, width, height);
+
+    surface->snapshot_cache_entry.hash = 0;
+}
+
+static cairo_surface_t *
+intel_surface_create (cairo_drm_device_t *device,
+		      cairo_format_t format,
+		      int width, int height)
+{
+    intel_surface_t *surface;
+    cairo_status_t status;
+
+    surface = _cairo_malloc (sizeof (intel_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    intel_surface_init (surface, &intel_surface_backend, device,
+			format, width, height);
+
+    if (width && height) {
+	/* Vol I, p134: size restrictions for textures */
+	width  = (width  + 3) & -4;
+	height = (height + 1) & -2;
+	surface->drm.stride =
+	    cairo_format_stride_for_width (surface->drm.format, width);
+	surface->drm.bo = &intel_bo_create (to_intel_device (&device->base),
+					    surface->drm.stride * height,
+					    surface->drm.stride * height,
+					    TRUE, I915_TILING_NONE, surface->drm.stride)->base;
+	if (surface->drm.bo == NULL) {
+	    status = _cairo_drm_surface_finish (&surface->drm);
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    return &surface->drm.base;
+}
+
+static cairo_surface_t *
+intel_surface_create_for_name (cairo_drm_device_t *device,
+			       unsigned int name,
+			       cairo_format_t format,
+			       int width, int height, int stride)
+{
+    intel_surface_t *surface;
+    cairo_status_t status;
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    }
+
+    if (stride < cairo_format_stride_for_width (format, width))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+
+    surface = _cairo_malloc (sizeof (intel_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    intel_surface_init (surface, &intel_surface_backend,
+			device, format, width, height);
+
+    if (width && height) {
+	surface->drm.stride = stride;
+
+	surface->drm.bo = &intel_bo_create_for_name (to_intel_device (&device->base),
+						      name)->base;
+	if (unlikely (surface->drm.bo == NULL)) {
+	    status = _cairo_drm_surface_finish (&surface->drm);
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error
+						   (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    return &surface->drm.base;
+}
+
+static cairo_status_t
+intel_surface_enable_scan_out (void *abstract_surface)
+{
+    intel_surface_t *surface = abstract_surface;
+
+    if (unlikely (surface->drm.bo == NULL))
+	return _cairo_error (CAIRO_STATUS_INVALID_SIZE);
+
+    to_intel_bo (surface->drm.bo)->tiling = I915_TILING_X;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+intel_device_throttle (cairo_drm_device_t *device)
+{
+    intel_throttle (to_intel_device (&device->base));
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+intel_device_destroy (void *data)
+{
+    intel_device_t *device = data;
+
+    intel_device_fini (device);
+
+    free (data);
+}
+
+cairo_drm_device_t *
+_cairo_drm_intel_device_create (int fd, dev_t dev, int vendor_id, int chip_id)
+{
+    intel_device_t *device;
+    cairo_status_t status;
+
+    if (! intel_info (fd, NULL))
+	return NULL;
+
+    device = _cairo_malloc (sizeof (intel_device_t));
+    if (unlikely (device == NULL))
+	return (cairo_drm_device_t *) _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = intel_device_init (device, fd);
+    if (unlikely (status)) {
+	free (device);
+	return (cairo_drm_device_t *) _cairo_device_create_in_error (status);
+    }
+
+    device->base.surface.create = intel_surface_create;
+    device->base.surface.create_for_name = intel_surface_create_for_name;
+    device->base.surface.create_from_cacheable_image = NULL;
+    device->base.surface.flink = _cairo_drm_surface_flink;
+    device->base.surface.enable_scan_out = intel_surface_enable_scan_out;
+
+    device->base.surface.map_to_image = intel_surface_map_to_image;
+
+    device->base.device.flush = NULL;
+    device->base.device.throttle = intel_device_throttle;
+    device->base.device.destroy = intel_device_destroy;
+
+    return _cairo_drm_device_init (&device->base,
+				   fd, dev,
+				   vendor_id, chip_id,
+				   MAX_SIZE);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-intel.c b/libs/cairo-1.16.0/src/drm/cairo-drm-intel.c
new file mode 100644
index 0000000..e6fb83d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-intel.c
@@ -0,0 +1,1347 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-intel-private.h"
+#include "cairo-drm-intel-ioctl-private.h"
+
+#include "cairo-error-private.h"
+#include "cairo-freelist-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-image-surface-private.h"
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <drm/i915_drm.h>
+
+#define GLYPH_CACHE_WIDTH 1024
+#define GLYPH_CACHE_HEIGHT 1024
+#define GLYPH_CACHE_MIN_SIZE 1
+#define GLYPH_CACHE_MAX_SIZE 128
+
+#define IMAGE_CACHE_WIDTH 1024
+#define IMAGE_CACHE_HEIGHT 1024
+
+int
+intel_get (int fd, int param)
+{
+    struct drm_i915_getparam gp;
+    int value;
+
+    gp.param = param;
+    gp.value = &value;
+    if (ioctl (fd, DRM_IOCTL_I915_GETPARAM, &gp) < 0)
+	return 0;
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (&value, sizeof (value)));
+
+    return value;
+}
+
+cairo_bool_t
+intel_info (int fd, uint64_t *gtt_size)
+{
+    struct drm_i915_gem_get_aperture info;
+
+    if (! intel_get (fd, I915_PARAM_HAS_GEM))
+	return FALSE;
+
+    if (! intel_get (fd, I915_PARAM_HAS_EXECBUF2))
+	return FALSE;
+
+    if (ioctl (fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &info) < 0)
+	return FALSE;
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (&info, sizeof (info)));
+
+    if (gtt_size != NULL)
+	*gtt_size = info.aper_size;
+
+    return TRUE;
+}
+
+void
+intel_bo_write (const intel_device_t *device,
+		intel_bo_t *bo,
+		unsigned long offset,
+		unsigned long size,
+		const void *data)
+{
+    struct drm_i915_gem_pwrite pwrite;
+    int ret;
+
+    assert (bo->tiling == I915_TILING_NONE);
+    assert (size);
+    assert (offset < bo->base.size);
+    assert (size+offset <= bo->base.size);
+
+    intel_bo_set_tiling (device, bo);
+
+    assert (bo->_tiling == I915_TILING_NONE);
+
+    memset (&pwrite, 0, sizeof (pwrite));
+    pwrite.handle = bo->base.handle;
+    pwrite.offset = offset;
+    pwrite.size = size;
+    pwrite.data_ptr = (uint64_t) (uintptr_t) data;
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
+    } while (ret == -1 && errno == EINTR);
+    assert (ret == 0);
+
+    bo->busy = FALSE;
+}
+
+void
+intel_bo_read (const intel_device_t *device,
+	       intel_bo_t *bo,
+	       unsigned long offset,
+	       unsigned long size,
+	       void *data)
+{
+    struct drm_i915_gem_pread pread;
+    int ret;
+
+    assert (bo->tiling == I915_TILING_NONE);
+    assert (size);
+    assert (offset < bo->base.size);
+    assert (size+offset <= bo->base.size);
+
+    intel_bo_set_tiling (device, bo);
+
+    assert (bo->_tiling == I915_TILING_NONE);
+
+    memset (&pread, 0, sizeof (pread));
+    pread.handle = bo->base.handle;
+    pread.offset = offset;
+    pread.size = size;
+    pread.data_ptr = (uint64_t) (uintptr_t) data;
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_PREAD, &pread);
+    } while (ret == -1 && errno == EINTR);
+    assert (ret == 0);
+
+    bo->cpu = TRUE;
+    bo->busy = FALSE;
+}
+
+void *
+intel_bo_map (const intel_device_t *device, intel_bo_t *bo)
+{
+    struct drm_i915_gem_set_domain set_domain;
+    uint32_t domain;
+    int ret;
+
+    intel_bo_set_tiling (device, bo);
+
+    if (bo->virtual != NULL)
+	return bo->virtual;
+
+    if (bo->cpu && bo->tiling == I915_TILING_NONE) {
+	struct drm_i915_gem_mmap mmap_arg;
+
+	mmap_arg.handle = bo->base.handle;
+	mmap_arg.offset = 0;
+	mmap_arg.size = bo->base.size;
+	mmap_arg.addr_ptr = 0;
+
+	do {
+	    ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_MMAP, &mmap_arg);
+	} while (ret == -1 && errno == EINTR);
+	if (unlikely (ret != 0)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return NULL;
+	}
+
+	bo->virtual = (void *) (uintptr_t) mmap_arg.addr_ptr;
+	domain = I915_GEM_DOMAIN_CPU;
+    } else {
+	struct drm_i915_gem_mmap_gtt mmap_arg;
+	void *ptr;
+
+	/* Get the fake offset back... */
+	mmap_arg.handle = bo->base.handle;
+	do {
+	    ret = ioctl (device->base.fd,
+			 DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg);
+	} while (ret == -1 && errno == EINTR);
+	if (unlikely (ret != 0)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return NULL;
+	}
+
+	/* and mmap it */
+	ptr = mmap (0, bo->base.size, PROT_READ | PROT_WRITE,
+		    MAP_SHARED, device->base.fd,
+		    mmap_arg.offset);
+	if (unlikely (ptr == MAP_FAILED)) {
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return NULL;
+	}
+
+	bo->virtual = ptr;
+	domain = I915_GEM_DOMAIN_GTT;
+    }
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (bo->virtual, bo->base.size));
+
+    set_domain.handle = bo->base.handle;
+    set_domain.read_domains = domain;
+    set_domain.write_domain = domain;
+
+    do {
+	ret = ioctl (device->base.fd,
+		     DRM_IOCTL_I915_GEM_SET_DOMAIN,
+		     &set_domain);
+    } while (ret == -1 && errno == EINTR);
+
+    if (ret != 0) {
+	intel_bo_unmap (bo);
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_ERROR);
+	return NULL;
+    }
+
+    bo->busy = FALSE;
+    return bo->virtual;
+}
+
+void
+intel_bo_unmap (intel_bo_t *bo)
+{
+    munmap (bo->virtual, bo->base.size);
+    bo->virtual = NULL;
+}
+
+cairo_bool_t
+intel_bo_is_inactive (const intel_device_t *device, intel_bo_t *bo)
+{
+    struct drm_i915_gem_busy busy;
+
+    if (! bo->busy)
+	return TRUE;
+
+    /* Is this buffer busy for our intended usage pattern? */
+    busy.handle = bo->base.handle;
+    busy.busy = 1;
+    ioctl (device->base.fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
+
+    bo->busy = busy.busy;
+    return ! busy.busy;
+}
+
+cairo_bool_t
+intel_bo_wait (const intel_device_t *device, const intel_bo_t *bo)
+{
+    struct drm_i915_gem_set_domain set_domain;
+    int ret;
+
+    set_domain.handle = bo->base.handle;
+    set_domain.read_domains = I915_GEM_DOMAIN_GTT;
+    set_domain.write_domain = 0;
+
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain);
+    } while (ret == -1 && errno == EINTR);
+
+    return ret == 0;
+}
+
+static inline int
+pot (int v)
+{
+    v--;
+    v |= v >> 1;
+    v |= v >> 2;
+    v |= v >> 4;
+    v |= v >> 8;
+    v |= v >> 16;
+    v++;
+    return v;
+}
+
+cairo_bool_t
+intel_bo_madvise (intel_device_t *device,
+		  intel_bo_t *bo,
+		  int advice)
+{
+    struct drm_i915_gem_madvise madv;
+
+    madv.handle = bo->base.handle;
+    madv.madv = advice;
+    madv.retained = TRUE;
+    ioctl (device->base.fd, DRM_IOCTL_I915_GEM_MADVISE, &madv);
+    return madv.retained;
+}
+
+static void
+intel_bo_set_real_size (intel_device_t *device,
+			intel_bo_t *bo,
+			size_t size)
+{
+    struct drm_i915_gem_real_size arg;
+    int ret;
+
+    return;
+
+    if (size == bo->base.size)
+	return;
+
+    arg.handle = bo->base.handle;
+    arg.size = size;
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_REAL_SIZE, &arg);
+    } while (ret == -1 && errno == EINTR);
+
+    if (ret == 0) {
+	if (size > bo->base.size) {
+	    assert (bo->exec == NULL);
+	    bo->cpu = TRUE;
+	    bo->busy = FALSE;
+	}
+
+	bo->base.size = size;
+    }
+}
+
+intel_bo_t *
+intel_bo_create (intel_device_t *device,
+	         uint32_t max_size,
+	         uint32_t real_size,
+	         cairo_bool_t gpu_target,
+		 uint32_t tiling,
+		 uint32_t stride)
+{
+    intel_bo_t *bo;
+    uint32_t cache_size;
+    struct drm_i915_gem_create create;
+    int bucket;
+    int ret;
+
+    max_size = (max_size + 4095) & -4096;
+    real_size = (real_size + 4095) & -4096;
+    cache_size = pot (max_size);
+    bucket = ffs (cache_size / 4096) - 1;
+    if (bucket >= INTEL_BO_CACHE_BUCKETS)
+	cache_size = max_size;
+
+    if (gpu_target) {
+	intel_bo_t *first = NULL;
+
+	cairo_list_foreach_entry (bo, intel_bo_t,
+				  &device->bo_in_flight,
+				  cache_list)
+	{
+	    assert (bo->exec != NULL);
+	    if (tiling && bo->_tiling &&
+		(bo->_tiling != tiling || bo->_stride != stride))
+	    {
+		continue;
+	    }
+
+	    if (real_size <= bo->base.size) {
+		if (real_size >= bo->base.size/2) {
+		    cairo_list_del (&bo->cache_list);
+		    bo = intel_bo_reference (bo);
+		    goto DONE;
+		}
+
+		if (first == NULL)
+		    first = bo;
+	    }
+	}
+
+	if (first != NULL) {
+	    cairo_list_del (&first->cache_list);
+	    bo = intel_bo_reference (first);
+	    goto DONE;
+	}
+    }
+
+    /* no cached buffer available, allocate fresh */
+    bo = _cairo_freepool_alloc (&device->bo_pool);
+    if (unlikely (bo == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return bo;
+    }
+
+    cairo_list_init (&bo->cache_list);
+
+    bo->base.name = 0;
+
+    bo->offset = 0;
+    bo->virtual = NULL;
+    bo->cpu = TRUE;
+
+    bo->_tiling = I915_TILING_NONE;
+    bo->_stride = 0;
+    bo->purgeable = 0;
+    bo->busy = FALSE;
+
+    bo->opaque0 = 0;
+    bo->opaque1 = 0;
+
+    bo->exec = NULL;
+    bo->batch_read_domains = 0;
+    bo->batch_write_domain = 0;
+    cairo_list_init (&bo->link);
+
+    create.size = cache_size;
+    create.handle = 0;
+    ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_CREATE, &create);
+    if (unlikely (ret != 0)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	_cairo_freepool_free (&device->bo_pool, bo);
+	return NULL;
+    }
+
+    bo->base.handle = create.handle;
+    bo->full_size = bo->base.size = create.size;
+
+    intel_bo_set_real_size (device, bo, real_size);
+    CAIRO_REFERENCE_COUNT_INIT (&bo->base.ref_count, 1);
+DONE:
+    bo->tiling = tiling;
+    bo->stride = stride;
+    return bo;
+}
+
+intel_bo_t *
+intel_bo_create_for_name (intel_device_t *device, uint32_t name)
+{
+    struct drm_i915_gem_get_tiling get_tiling;
+    cairo_status_t status;
+    intel_bo_t *bo;
+    int ret;
+
+    bo = _cairo_freepool_alloc (&device->bo_pool);
+    if (unlikely (bo == NULL)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    status = _cairo_drm_bo_open_for_name (&device->base, &bo->base, name);
+    if (unlikely (status))
+	goto FAIL;
+
+    CAIRO_REFERENCE_COUNT_INIT (&bo->base.ref_count, 1);
+    cairo_list_init (&bo->cache_list);
+
+    bo->full_size = bo->base.size;
+    bo->offset = 0;
+    bo->virtual = NULL;
+    bo->purgeable = 0;
+    bo->busy = TRUE;
+    bo->cpu = FALSE;
+
+    bo->opaque0 = 0;
+    bo->opaque1 = 0;
+
+    bo->exec = NULL;
+    bo->batch_read_domains = 0;
+    bo->batch_write_domain = 0;
+    cairo_list_init (&bo->link);
+
+    memset (&get_tiling, 0, sizeof (get_tiling));
+    get_tiling.handle = bo->base.handle;
+
+    ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_GET_TILING, &get_tiling);
+    if (unlikely (ret != 0)) {
+	_cairo_error_throw (CAIRO_STATUS_DEVICE_ERROR);
+	_cairo_drm_bo_close (&device->base, &bo->base);
+	goto FAIL;
+    }
+
+    bo->_tiling = bo->tiling = get_tiling.tiling_mode;
+    // bo->stride = get_tiling.stride; /* XXX not available from get_tiling */
+
+    return bo;
+
+FAIL:
+    _cairo_freepool_free (&device->bo_pool, bo);
+    return NULL;
+}
+
+static void
+intel_bo_release (void *_dev, void *_bo)
+{
+    intel_device_t *device = _dev;
+    intel_bo_t *bo = _bo;
+
+    if (bo->virtual != NULL)
+	intel_bo_unmap (bo);
+
+    assert (bo->exec == NULL);
+    assert (cairo_list_is_empty (&bo->cache_list));
+
+    _cairo_drm_bo_close (&device->base, &bo->base);
+    _cairo_freepool_free (&device->bo_pool, bo);
+}
+
+void
+intel_bo_set_tiling (const intel_device_t *device,
+	             intel_bo_t *bo)
+{
+    struct drm_i915_gem_set_tiling set_tiling;
+    int ret;
+
+    if (bo->tiling == bo->_tiling &&
+	(bo->tiling == I915_TILING_NONE || bo->stride == bo->_stride))
+	return;
+
+    do {
+	set_tiling.handle = bo->base.handle;
+	set_tiling.tiling_mode = bo->tiling;
+	set_tiling.stride = bo->stride;
+
+	ret = ioctl (device->base.fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
+    } while (ret == -1 && errno == EINTR);
+
+    assert (ret == 0);
+    bo->_tiling = bo->tiling;
+    bo->_stride = bo->stride;
+}
+
+static cairo_status_t
+_intel_bo_put_a1_image (intel_device_t *device,
+			intel_bo_t *bo,
+			cairo_image_surface_t *src,
+			int src_x, int src_y,
+			int width, int height,
+			int dst_x, int dst_y)
+{
+    uint8_t buf[CAIRO_STACK_BUFFER_SIZE];
+    uint8_t *a8 = buf;
+    uint8_t *data;
+    int x;
+
+    data = src->data + src_y * src->stride;
+
+    if (bo->tiling == I915_TILING_NONE && width == bo->stride) {
+	uint8_t *p;
+	int size;
+
+	size = bo->stride * height;
+	if (size > (int) sizeof (buf)) {
+	    a8 = _cairo_malloc_ab (bo->stride, height);
+	    if (a8 == NULL)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	p = a8;
+	while (height--) {
+	    for (x = 0; x < width; x++) {
+		int i = src_x + x;
+		int byte = i / 8;
+		int bit = i % 8;
+		p[x] = data[byte] & (1 << bit) ? 0xff : 0x00;
+	    }
+
+	    data += src->stride;
+	    p += bo->stride;
+	}
+
+	intel_bo_write (device, bo,
+			dst_y * bo->stride + dst_x, /* XXX  bo_offset */
+			size, a8);
+    } else {
+	uint8_t *dst;
+
+	if (width > (int) sizeof (buf)) {
+	    a8 = _cairo_malloc (width);
+	    if (a8 == NULL)
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	dst = intel_bo_map (device, bo);
+	if (dst == NULL) {
+	    if (a8 != buf)
+		free (a8);
+	    return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+	}
+
+	dst += dst_y * bo->stride + dst_x; /* XXX  bo_offset */
+	while (height--) {
+	    for (x = 0; x < width; x++) {
+		int i = src_x + x;
+		int byte = i / 8;
+		int bit = i % 8;
+		a8[x] = data[byte] & (1 << bit) ? 0xff : 0x00;
+	    }
+
+	    memcpy (dst, a8, width);
+	    dst  += bo->stride;
+	    data += src->stride;
+	}
+    }
+
+    if (a8 != buf)
+	free (a8);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+intel_bo_put_image (intel_device_t *device,
+		    intel_bo_t *bo,
+		    cairo_image_surface_t *src,
+		    int src_x, int src_y,
+		    int width, int height,
+		    int dst_x, int dst_y)
+{
+    uint8_t *data;
+    int size;
+    int offset;
+
+    intel_bo_set_tiling (device, bo);
+
+    offset = dst_y * bo->stride;
+    data = src->data + src_y * src->stride;
+    switch (src->format) {
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+	offset += 4 * dst_x;
+	data   += 4 * src_x;
+	size    = 4 * width;
+	break;
+    case CAIRO_FORMAT_RGB16_565:
+	offset += 2 * dst_x;
+	data   += 2 * src_x;
+	size    = 2 * width;
+	break;
+    case CAIRO_FORMAT_A8:
+	offset += dst_x;
+	data   += src_x;
+	size    = width;
+	break;
+    case CAIRO_FORMAT_A1:
+	return _intel_bo_put_a1_image (device, bo, src,
+				       src_x, src_y,
+				       width, height,
+				       dst_x, dst_y);
+    default:
+    case CAIRO_FORMAT_INVALID:
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    }
+
+    if (bo->tiling == I915_TILING_NONE && src->stride == bo->stride) {
+	intel_bo_write (device, bo, offset, bo->stride * height, data);
+    } else {
+	uint8_t *dst;
+
+	dst = intel_bo_map (device, bo);
+	if (unlikely (dst == NULL))
+	    return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+	dst += offset;
+	while (height--) {
+	    memcpy (dst, data, size);
+	    dst  += bo->stride;
+	    data += src->stride;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_intel_snapshot_cache_entry_can_remove (const void *closure)
+{
+    return TRUE;
+}
+
+static void
+_intel_snapshot_cache_entry_destroy (void *closure)
+{
+    intel_surface_t *surface = cairo_container_of (closure,
+						   intel_surface_t,
+						   snapshot_cache_entry);
+
+    surface->snapshot_cache_entry.hash = 0;
+}
+
+cairo_status_t
+intel_device_init (intel_device_t *device, int fd)
+{
+    struct drm_i915_gem_get_aperture aperture;
+    cairo_status_t status;
+    size_t size;
+    int ret;
+    int n;
+
+    ret = ioctl (fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
+    if (ret != 0)
+	return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+
+    CAIRO_MUTEX_INIT (device->mutex);
+
+    device->gtt_max_size = aperture.aper_size;
+    device->gtt_avail_size = aperture.aper_available_size;
+    device->gtt_avail_size -= device->gtt_avail_size >> 5;
+
+    size = aperture.aper_size / 8;
+    device->snapshot_cache_max_size = size / 4;
+    status = _cairo_cache_init (&device->snapshot_cache,
+			        NULL,
+				_intel_snapshot_cache_entry_can_remove,
+				_intel_snapshot_cache_entry_destroy,
+				size);
+    if (unlikely (status))
+	return status;
+
+    for (n = 0; n < ARRAY_LENGTH (device->glyph_cache); n++) {
+	device->glyph_cache[n].buffer.bo = NULL;
+	cairo_list_init (&device->glyph_cache[n].rtree.pinned);
+    }
+    cairo_list_init (&device->fonts);
+
+    device->gradient_cache.size = 0;
+
+    device->base.bo.release = intel_bo_release;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_intel_gradient_cache_fini (intel_device_t *device)
+{
+    unsigned int n;
+
+    for (n = 0; n < device->gradient_cache.size; n++) {
+	_cairo_pattern_fini (&device->gradient_cache.cache[n].pattern.base);
+	if (device->gradient_cache.cache[n].buffer.bo != NULL)
+	    cairo_drm_bo_destroy (&device->base.base,
+				  &device->gradient_cache.cache[n].buffer.bo->base);
+    }
+}
+
+static void
+_intel_glyph_cache_fini (intel_device_t *device, intel_buffer_cache_t *cache)
+{
+    if (cache->buffer.bo == NULL)
+	return;
+
+    intel_bo_destroy (device, cache->buffer.bo);
+    _cairo_rtree_fini (&cache->rtree);
+}
+
+void
+intel_device_fini (intel_device_t *device)
+{
+    cairo_scaled_font_t *scaled_font, *next_scaled_font;
+    int n;
+
+    cairo_list_foreach_entry_safe (scaled_font,
+				   next_scaled_font,
+				   cairo_scaled_font_t,
+				   &device->fonts,
+				   link)
+    {
+	_cairo_scaled_font_revoke_ownership (scaled_font);
+    }
+
+    for (n = 0; n < ARRAY_LENGTH (device->glyph_cache); n++)
+	_intel_glyph_cache_fini (device, &device->glyph_cache[n]);
+
+    _cairo_cache_fini (&device->snapshot_cache);
+
+    _intel_gradient_cache_fini (device);
+    _cairo_freepool_fini (&device->bo_pool);
+
+    _cairo_drm_device_fini (&device->base);
+}
+
+void
+intel_throttle (intel_device_t *device)
+{
+    ioctl (device->base.fd, DRM_IOCTL_I915_GEM_THROTTLE);
+}
+
+void
+intel_glyph_cache_unpin (intel_device_t *device)
+{
+    int n;
+
+    for (n = 0; n < ARRAY_LENGTH (device->glyph_cache); n++)
+	_cairo_rtree_unpin (&device->glyph_cache[n].rtree);
+}
+
+static cairo_status_t
+intel_glyph_cache_add_glyph (intel_device_t *device,
+	                     intel_buffer_cache_t *cache,
+			     cairo_scaled_glyph_t  *scaled_glyph)
+{
+    cairo_image_surface_t *glyph_surface = scaled_glyph->surface;
+    intel_glyph_t *glyph;
+    cairo_rtree_node_t *node = NULL;
+    double sf_x, sf_y;
+    cairo_status_t status;
+    uint8_t *dst, *src;
+    int width, height;
+
+    width = glyph_surface->width;
+    if (width < GLYPH_CACHE_MIN_SIZE)
+	width = GLYPH_CACHE_MIN_SIZE;
+    height = glyph_surface->height;
+    if (height < GLYPH_CACHE_MIN_SIZE)
+	height = GLYPH_CACHE_MIN_SIZE;
+
+    /* search for an available slot */
+    status = _cairo_rtree_insert (&cache->rtree, width, height, &node);
+    /* search for an unpinned slot */
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	status = _cairo_rtree_evict_random (&cache->rtree, width, height, &node);
+	if (status == CAIRO_STATUS_SUCCESS)
+	    status = _cairo_rtree_node_insert (&cache->rtree, node, width, height, &node);
+    }
+    if (unlikely (status))
+	return status;
+
+    /* XXX streaming upload? */
+
+    height = glyph_surface->height;
+    src = glyph_surface->data;
+    dst = cache->buffer.bo->virtual;
+    if (dst == NULL) {
+	dst = intel_bo_map (device, cache->buffer.bo);
+	if (unlikely (dst == NULL))
+	    return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+    }
+
+    dst += node->y * cache->buffer.stride;
+    switch (glyph_surface->format) {
+    case CAIRO_FORMAT_A1: {
+	uint8_t buf[CAIRO_STACK_BUFFER_SIZE];
+	uint8_t *a8 = buf;
+	int x;
+
+	if (width > (int) sizeof (buf)) {
+	    a8 = _cairo_malloc (width);
+	    if (unlikely (a8 == NULL))
+		return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+
+	dst += node->x;
+	width = glyph_surface->width;
+	while (height--) {
+	    for (x = 0; x < width; x++)
+		a8[x] = src[x>>3] & (1 << (x&7)) ? 0xff : 0x00;
+
+	    memcpy (dst, a8, width);
+	    dst += cache->buffer.stride;
+	    src += glyph_surface->stride;
+	}
+
+	if (a8 != buf)
+	    free (a8);
+	break;
+    }
+
+    case CAIRO_FORMAT_A8:
+	dst  += node->x;
+	width = glyph_surface->width;
+	while (height--) {
+	    memcpy (dst, src, width);
+	    dst += cache->buffer.stride;
+	    src += glyph_surface->stride;
+	}
+	break;
+
+    case CAIRO_FORMAT_ARGB32:
+	dst  += 4*node->x;
+	width = 4*glyph_surface->width;
+	while (height--) {
+	    memcpy (dst, src, width);
+	    dst += cache->buffer.stride;
+	    src += glyph_surface->stride;
+	}
+	break;
+    default:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    }
+
+    scaled_glyph->surface_private = node;
+
+    glyph= (intel_glyph_t *) node;
+    glyph->node.owner = &scaled_glyph->surface_private;
+    glyph->cache = cache;
+
+    /* compute tex coords: bottom-right, bottom-left, top-left */
+    sf_x = 1. / cache->buffer.width;
+    sf_y = 1. / cache->buffer.height;
+    glyph->texcoord[0] =
+	texcoord_2d_16 (sf_x * (node->x + glyph_surface->width),
+		        sf_y * (node->y + glyph_surface->height));
+    glyph->texcoord[1] =
+	texcoord_2d_16 (sf_x * node->x,
+		        sf_y * (node->y + glyph_surface->height));
+    glyph->texcoord[2] =
+	texcoord_2d_16 (sf_x * node->x,
+	                sf_y * node->y);
+
+    glyph->width  = glyph_surface->width;
+    glyph->height = glyph_surface->height;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+intel_scaled_glyph_fini (cairo_scaled_glyph_t *scaled_glyph,
+			 cairo_scaled_font_t  *scaled_font)
+{
+    intel_glyph_t *glyph;
+
+    glyph = scaled_glyph->surface_private;
+    if (glyph != NULL) {
+	/* XXX thread-safety? Probably ok due to the frozen scaled-font. */
+	glyph->node.owner = NULL;
+	if (! glyph->node.pinned)
+	    _cairo_rtree_node_remove (&glyph->cache->rtree, &glyph->node);
+    }
+}
+
+void
+intel_scaled_font_fini (cairo_scaled_font_t *scaled_font)
+{
+    cairo_list_del (&scaled_font->link);
+}
+
+static cairo_status_t
+intel_get_glyph_cache (intel_device_t *device,
+		       cairo_format_t format,
+		       intel_buffer_cache_t **out)
+{
+    intel_buffer_cache_t *cache;
+    cairo_status_t status;
+
+    switch (format) {
+    case CAIRO_FORMAT_ARGB32:
+	cache = &device->glyph_cache[0];
+	format = CAIRO_FORMAT_ARGB32;
+	break;
+    case CAIRO_FORMAT_A8:
+    case CAIRO_FORMAT_A1:
+	cache = &device->glyph_cache[1];
+	format = CAIRO_FORMAT_A8;
+	break;
+    default:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    }
+
+    if (unlikely (cache->buffer.bo == NULL)) {
+	status = intel_buffer_cache_init (cache, device, format,
+					 INTEL_GLYPH_CACHE_WIDTH,
+					 INTEL_GLYPH_CACHE_HEIGHT);
+	if (unlikely (status))
+	    return status;
+
+	_cairo_rtree_init (&cache->rtree,
+			   INTEL_GLYPH_CACHE_WIDTH,
+			   INTEL_GLYPH_CACHE_HEIGHT,
+			   0, sizeof (intel_glyph_t));
+    }
+
+    *out = cache;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_int_status_t
+intel_get_glyph (intel_device_t *device,
+		 cairo_scaled_font_t *scaled_font,
+		 cairo_scaled_glyph_t *scaled_glyph)
+{
+    cairo_bool_t own_surface = FALSE;
+    intel_buffer_cache_t *cache;
+    cairo_status_t status;
+
+    if (scaled_glyph->surface == NULL) {
+	status =
+	    scaled_font->backend->scaled_glyph_init (scaled_font,
+						     scaled_glyph,
+						     CAIRO_SCALED_GLYPH_INFO_SURFACE);
+	if (unlikely (status))
+	    return status;
+
+	if (unlikely (scaled_glyph->surface == NULL))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	own_surface = TRUE;
+    }
+
+    if (unlikely (scaled_glyph->surface->width == 0 ||
+		  scaled_glyph->surface->height == 0))
+    {
+	return CAIRO_INT_STATUS_NOTHING_TO_DO;
+    }
+
+    if (unlikely (scaled_glyph->surface->width  > GLYPH_CACHE_MAX_SIZE ||
+		  scaled_glyph->surface->height > GLYPH_CACHE_MAX_SIZE))
+    {
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    status = intel_get_glyph_cache (device,
+				    scaled_glyph->surface->format,
+				    &cache);
+    if (unlikely (status))
+	return status;
+
+    status = intel_glyph_cache_add_glyph (device, cache, scaled_glyph);
+    if (unlikely (_cairo_status_is_error (status)))
+	return status;
+
+    if (unlikely (status == CAIRO_INT_STATUS_UNSUPPORTED)) {
+	/* no room, replace entire cache */
+
+	assert (cache->buffer.bo->exec != NULL);
+
+	_cairo_rtree_reset (&cache->rtree);
+	intel_bo_destroy (device, cache->buffer.bo);
+	cache->buffer.bo = NULL;
+
+	status = intel_buffer_cache_init (cache, device,
+					  scaled_glyph->surface->format,
+					  GLYPH_CACHE_WIDTH,
+					  GLYPH_CACHE_HEIGHT);
+	if (unlikely (status))
+	    return status;
+
+	status = intel_glyph_cache_add_glyph (device, cache, scaled_glyph);
+	if (unlikely (status))
+	    return status;
+    }
+
+    if (own_surface) {
+	/* and release the copy of the image from system memory */
+	cairo_surface_destroy (&scaled_glyph->surface->base);
+	scaled_glyph->surface = NULL;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+intel_buffer_cache_init (intel_buffer_cache_t *cache,
+		        intel_device_t *device,
+			cairo_format_t format,
+			int width, int height)
+{
+    const uint32_t tiling = I915_TILING_Y;
+    uint32_t stride, size;
+
+    assert ((width & 3) == 0);
+    assert ((height & 1) == 0);
+    cache->buffer.format = format;
+    cache->buffer.width = width;
+    cache->buffer.height = height;
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    case CAIRO_FORMAT_ARGB32:
+	cache->buffer.map0 = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+	stride = width * 4;
+	break;
+    case CAIRO_FORMAT_A8:
+	cache->buffer.map0 = MAPSURF_8BIT | MT_8BIT_I8;
+	stride = width;
+	break;
+    }
+
+    size = height * stride;
+    cache->buffer.bo = intel_bo_create (device,
+					size, size,
+					FALSE, tiling, stride);
+    if (unlikely (cache->buffer.bo == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    cache->buffer.stride = stride;
+
+    cache->buffer.offset = 0;
+    cache->buffer.map0 |= MS3_tiling (tiling);
+    cache->buffer.map0 |= ((height - 1) << MS3_HEIGHT_SHIFT) |
+	                  ((width - 1)  << MS3_WIDTH_SHIFT);
+    cache->buffer.map1 = ((stride / 4) - 1) << MS4_PITCH_SHIFT;
+
+    cache->ref_count = 0;
+    cairo_list_init (&cache->link);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+intel_snapshot_cache_insert (intel_device_t *device,
+			     intel_surface_t *surface)
+{
+    cairo_status_t status;
+
+    surface->snapshot_cache_entry.size = surface->drm.bo->size;
+    if (surface->snapshot_cache_entry.size >
+	device->snapshot_cache_max_size)
+    {
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    if (device->snapshot_cache.freeze_count == 0)
+	_cairo_cache_freeze (&device->snapshot_cache);
+
+    surface->snapshot_cache_entry.hash = (unsigned long) surface;
+    status = _cairo_cache_insert (&device->snapshot_cache,
+	                          &surface->snapshot_cache_entry);
+    if (unlikely (status)) {
+	surface->snapshot_cache_entry.hash = 0;
+	return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+intel_surface_detach_snapshot (cairo_surface_t *abstract_surface)
+{
+    intel_surface_t *surface = (intel_surface_t *) abstract_surface;
+
+    if (surface->snapshot_cache_entry.hash) {
+	intel_device_t *device;
+
+	device = (intel_device_t *) surface->drm.base.device;
+	_cairo_cache_remove (&device->snapshot_cache,
+		             &surface->snapshot_cache_entry);
+	assert (surface->snapshot_cache_entry.hash == 0);
+    }
+}
+
+void
+intel_snapshot_cache_thaw (intel_device_t *device)
+{
+    if (device->snapshot_cache.freeze_count)
+	_cairo_cache_thaw (&device->snapshot_cache);
+}
+
+static cairo_bool_t
+_gradient_color_stops_equal (const cairo_gradient_pattern_t *a,
+			     const cairo_gradient_pattern_t *b)
+{
+    unsigned int n;
+
+    if (a->n_stops != b->n_stops)
+	return FALSE;
+
+    for (n = 0; n < a->n_stops; n++) {
+	if (_cairo_fixed_from_double (a->stops[n].offset) !=
+	    _cairo_fixed_from_double (b->stops[n].offset))
+	{
+	    return FALSE;
+	}
+
+	if (! _cairo_color_stop_equal (&a->stops[n].color, &b->stops[n].color))
+	    return FALSE;
+    }
+
+    return TRUE;
+}
+
+static uint32_t
+hars_petruska_f54_1_random (void)
+{
+#define rol(x,k) ((x << k) | (x >> (32-k)))
+    static uint32_t x;
+    return x = (x ^ rol (x, 5) ^ rol (x, 24)) + 0x37798849;
+#undef rol
+}
+
+static int
+intel_gradient_sample_width (const cairo_gradient_pattern_t *gradient)
+{
+    unsigned int n;
+    int width;
+
+    width = 8;
+    for (n = 1; n < gradient->n_stops; n++) {
+	double dx = gradient->stops[n].offset - gradient->stops[n-1].offset;
+	double delta, max;
+	int ramp;
+
+	if (dx == 0)
+	    continue;
+
+	max = gradient->stops[n].color.red -
+	      gradient->stops[n-1].color.red;
+
+	delta = gradient->stops[n].color.green -
+	        gradient->stops[n-1].color.green;
+	if (delta > max)
+	    max = delta;
+
+	delta = gradient->stops[n].color.blue -
+	        gradient->stops[n-1].color.blue;
+	if (delta > max)
+	    max = delta;
+
+	delta = gradient->stops[n].color.alpha -
+	        gradient->stops[n-1].color.alpha;
+	if (delta > max)
+	    max = delta;
+
+	ramp = 128 * max / dx;
+	if (ramp > width)
+	    width = ramp;
+    }
+
+    width = (width + 7) & -8;
+    return MIN (width, 1024);
+}
+
+cairo_status_t
+intel_gradient_render (intel_device_t *device,
+		       const cairo_gradient_pattern_t *pattern,
+		       intel_buffer_t *buffer)
+{
+    pixman_image_t *gradient, *image;
+    pixman_gradient_stop_t pixman_stops_stack[32];
+    pixman_gradient_stop_t *pixman_stops;
+    pixman_point_fixed_t p1, p2;
+    int width;
+    unsigned int i;
+    cairo_status_t status;
+
+    for (i = 0; i < device->gradient_cache.size; i++) {
+	if (_gradient_color_stops_equal (pattern,
+					 &device->gradient_cache.cache[i].pattern.gradient.base)) {
+	    *buffer = device->gradient_cache.cache[i].buffer;
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    pixman_stops = pixman_stops_stack;
+    if (unlikely (pattern->n_stops > ARRAY_LENGTH (pixman_stops_stack))) {
+	pixman_stops = _cairo_malloc_ab (pattern->n_stops,
+					 sizeof (pixman_gradient_stop_t));
+	if (unlikely (pixman_stops == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    for (i = 0; i < pattern->n_stops; i++) {
+	pixman_stops[i].x = _cairo_fixed_16_16_from_double (pattern->stops[i].offset);
+	pixman_stops[i].color.red   = pattern->stops[i].color.red_short;
+	pixman_stops[i].color.green = pattern->stops[i].color.green_short;
+	pixman_stops[i].color.blue  = pattern->stops[i].color.blue_short;
+	pixman_stops[i].color.alpha = pattern->stops[i].color.alpha_short;
+    }
+
+    width = intel_gradient_sample_width (pattern);
+
+    p1.x = 0;
+    p1.y = 0;
+    p2.x = width << 16;
+    p2.y = 0;
+
+    gradient = pixman_image_create_linear_gradient (&p1, &p2,
+						    pixman_stops,
+						    pattern->n_stops);
+    if (pixman_stops != pixman_stops_stack)
+	free (pixman_stops);
+
+    if (unlikely (gradient == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    pixman_image_set_filter (gradient, PIXMAN_FILTER_BILINEAR, NULL, 0);
+    pixman_image_set_repeat (gradient, PIXMAN_REPEAT_PAD);
+
+    image = pixman_image_create_bits (PIXMAN_a8r8g8b8, width, 1, NULL, 0);
+    if (unlikely (image == NULL)) {
+	pixman_image_unref (gradient);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pixman_image_composite32 (PIXMAN_OP_SRC,
+                              gradient, NULL, image,
+                              0, 0,
+                              0, 0,
+                              0, 0,
+                              width, 1);
+
+    pixman_image_unref (gradient);
+
+    buffer->bo = intel_bo_create (device,
+				  4*width, 4*width,
+				  FALSE, I915_TILING_NONE, 4*width);
+    if (unlikely (buffer->bo == NULL)) {
+	pixman_image_unref (image);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    intel_bo_write (device, buffer->bo, 0, 4*width, pixman_image_get_data (image));
+    pixman_image_unref (image);
+
+    buffer->offset = 0;
+    buffer->width  = width;
+    buffer->height = 1;
+    buffer->stride = 4*width;
+    buffer->format = CAIRO_FORMAT_ARGB32;
+    buffer->map0 = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+    buffer->map0 |= ((width - 1) << MS3_WIDTH_SHIFT);
+    buffer->map1 = (width - 1) << MS4_PITCH_SHIFT;
+
+    if (device->gradient_cache.size < GRADIENT_CACHE_SIZE) {
+	i = device->gradient_cache.size++;
+    } else {
+	i = hars_petruska_f54_1_random () % GRADIENT_CACHE_SIZE;
+	_cairo_pattern_fini (&device->gradient_cache.cache[i].pattern.base);
+	intel_bo_destroy (device, device->gradient_cache.cache[i].buffer.bo);
+    }
+
+    status = _cairo_pattern_init_copy (&device->gradient_cache.cache[i].pattern.base,
+				       &pattern->base);
+    if (unlikely (status)) {
+	intel_bo_destroy (device, buffer->bo);
+	/* Ensure the cache is correctly initialised for i965_device_destroy */
+	_cairo_pattern_init_solid (&device->gradient_cache.cache[i].pattern.solid,
+		                   CAIRO_COLOR_TRANSPARENT);
+	return status;
+    }
+
+    device->gradient_cache.cache[i].buffer = *buffer;
+    return CAIRO_STATUS_SUCCESS;
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-private.h
new file mode 100644
index 0000000..2db7f38
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-private.h
@@ -0,0 +1,238 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ *
+ * Contributors(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef CAIRO_DRM_PRIVATE_H
+#define CAIRO_DRM_PRIVATE_H
+
+#include "cairo-drm.h"
+
+#include "cairo-device-private.h"
+#include "cairo-reference-count-private.h"
+#include "cairo-surface-private.h"
+
+#include <sys/types.h> /* dev_t */
+
+typedef struct _cairo_drm_device cairo_drm_device_t;
+
+typedef cairo_drm_device_t *
+(*cairo_drm_device_create_func_t) (int fd,
+				   dev_t dev,
+				   int vendor_id,
+				   int chip_id);
+
+typedef cairo_int_status_t
+(*cairo_drm_device_flush_func_t) (cairo_drm_device_t *device);
+
+typedef cairo_int_status_t
+(*cairo_drm_device_throttle_func_t) (cairo_drm_device_t *device);
+
+typedef void
+(*cairo_drm_device_destroy_func_t) (void *data);
+
+typedef cairo_surface_t *
+(*cairo_drm_surface_create_func_t) (cairo_drm_device_t *device,
+				    cairo_format_t format,
+				    int width, int height);
+
+typedef cairo_surface_t *
+(*cairo_drm_surface_create_for_name_func_t) (cairo_drm_device_t *device,
+				             unsigned int name,
+					     cairo_format_t format,
+					     int width, int height, int stride);
+
+typedef cairo_surface_t *
+(*cairo_drm_surface_create_from_cacheable_image_func_t)
+    (cairo_drm_device_t *device, cairo_surface_t *image);
+
+typedef cairo_int_status_t
+(*cairo_drm_surface_flink_func_t) (void *surface);
+
+typedef cairo_status_t
+(*cairo_drm_surface_enable_scan_out_func_t) (void *surface);
+
+typedef cairo_surface_t *
+(*cairo_drm_surface_map_to_image_func_t) (void *surface);
+
+typedef struct _cairo_drm_bo_backend {
+    void (*release) (void *device, void *bo);
+} cairo_drm_bo_backend_t;
+
+typedef struct _cairo_drm_device_backend {
+    cairo_drm_device_flush_func_t flush;
+    cairo_drm_device_throttle_func_t throttle;
+    cairo_drm_device_destroy_func_t destroy;
+} cairo_drm_device_backend_t;
+
+typedef struct _cairo_drm_surface_backend {
+    cairo_drm_surface_create_func_t create;
+    cairo_drm_surface_create_for_name_func_t create_for_name;
+    cairo_drm_surface_create_from_cacheable_image_func_t create_from_cacheable_image;
+    cairo_drm_surface_flink_func_t flink;
+    cairo_drm_surface_enable_scan_out_func_t enable_scan_out;
+    cairo_drm_surface_map_to_image_func_t map_to_image;
+} cairo_drm_surface_backend_t;
+
+typedef struct _cairo_drm_bo {
+    cairo_reference_count_t ref_count;
+    uint32_t name;
+    uint32_t handle;
+    uint32_t size;
+} cairo_drm_bo_t;
+
+struct _cairo_drm_device {
+    cairo_device_t base;
+
+    int vendor_id;
+    int chip_id;
+    dev_t id;
+    int fd;
+
+    int max_surface_size;
+
+    cairo_drm_bo_backend_t bo;
+    cairo_drm_surface_backend_t surface;
+    cairo_drm_device_backend_t device;
+
+    cairo_drm_device_t *next, *prev;
+};
+
+typedef struct _cairo_drm_surface {
+    cairo_surface_t base;
+
+    cairo_drm_bo_t *bo;
+
+    cairo_format_t format;
+    int width, height, stride;
+
+    cairo_surface_t *fallback;
+    uint32_t map_count;
+} cairo_drm_surface_t;
+
+static inline cairo_drm_bo_t *
+cairo_drm_bo_reference (cairo_drm_bo_t *bo)
+{
+    _cairo_reference_count_inc (&bo->ref_count);
+    return bo;
+}
+
+static cairo_always_inline void
+cairo_drm_bo_destroy (cairo_device_t *abstract_device,
+		      cairo_drm_bo_t *bo)
+{
+    if (_cairo_reference_count_dec_and_test (&bo->ref_count)) {
+	cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+	device->bo.release (device, bo);
+    }
+}
+
+cairo_private cairo_status_t
+_cairo_drm_bo_open_for_name (const cairo_drm_device_t *dev,
+			     cairo_drm_bo_t *bo,
+			     uint32_t name);
+
+cairo_private cairo_status_t
+_cairo_drm_bo_flink (const cairo_drm_device_t *dev,
+		     cairo_drm_bo_t *bo);
+
+cairo_private void
+_cairo_drm_bo_close (const cairo_drm_device_t *dev,
+		     cairo_drm_bo_t *bo);
+
+cairo_private void
+_cairo_drm_surface_init (cairo_drm_surface_t *surface,
+			 cairo_format_t format,
+			 int width, int height);
+
+cairo_private cairo_status_t
+_cairo_drm_surface_finish (cairo_drm_surface_t *surface);
+
+cairo_private void
+_cairo_drm_surface_get_font_options (void                  *abstract_surface,
+				     cairo_font_options_t  *options);
+
+cairo_private cairo_bool_t
+_cairo_drm_surface_get_extents (void *abstract_surface,
+			        cairo_rectangle_int_t *rectangle);
+
+cairo_private cairo_int_status_t
+_cairo_drm_surface_flink (void *abstract_surface);
+
+static inline cairo_drm_device_t *
+_cairo_drm_device_create_in_error (cairo_status_t status)
+{
+    return (cairo_drm_device_t *) _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+}
+
+cairo_private cairo_drm_device_t *
+_cairo_drm_device_init (cairo_drm_device_t *device,
+			int fd,
+			dev_t devid,
+			int vendor_id,
+			int chip_id,
+			int max_surface_size);
+
+cairo_private void
+_cairo_drm_device_fini (cairo_drm_device_t *device);
+
+/* h/w specific backends */
+
+cairo_private cairo_drm_device_t *
+_cairo_drm_intel_device_create (int fd, dev_t dev, int vendor_id, int chip_id);
+
+cairo_private cairo_drm_device_t *
+_cairo_drm_i915_device_create (int fd, dev_t dev, int vendor_id, int chip_id);
+
+cairo_private cairo_drm_device_t *
+_cairo_drm_i965_device_create (int fd, dev_t dev, int vendor_id, int chip_id);
+
+cairo_private cairo_drm_device_t *
+_cairo_drm_radeon_device_create (int fd, dev_t dev, int vendor_id, int chip_id);
+
+#if CAIRO_HAS_GALLIUM_SURFACE
+cairo_private cairo_drm_device_t *
+_cairo_drm_gallium_device_create (int fd, dev_t dev, int vendor_id, int chip_id);
+#endif
+
+slim_hidden_proto (cairo_drm_device_default);
+slim_hidden_proto (cairo_drm_device_get);
+slim_hidden_proto (cairo_drm_device_get_for_fd);
+
+slim_hidden_proto (cairo_drm_surface_create_for_name);
+
+cairo_private cairo_bool_t
+_cairo_drm_size_is_valid (cairo_device_t *abstract_device,
+			  int width, int height);
+
+#endif /* CAIRO_DRM_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-radeon-private.h b/libs/cairo-1.16.0/src/drm/cairo-drm-radeon-private.h
new file mode 100644
index 0000000..0768528
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-radeon-private.h
@@ -0,0 +1,103 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#ifndef CAIRO_DRM_RADEON_PRIVATE_H
+#define CAIRO_DRM_RADEON_PRIVATE_H
+
+#include "cairo-compiler-private.h"
+#include "cairo-types-private.h"
+#include "cairo-drm-private.h"
+#include "cairo-freelist-private.h"
+
+typedef struct _radeon_bo {
+    cairo_drm_bo_t base;
+
+    void *virtual;
+
+    cairo_bool_t in_batch;
+    uint32_t read_domains;
+    uint32_t write_domain;
+} radeon_bo_t;
+
+typedef struct _radeon_device {
+    cairo_drm_device_t base;
+    cairo_freepool_t bo_pool;
+
+    uint64_t vram_limit;
+    uint64_t gart_limit;
+} radeon_device_t;
+
+cairo_private cairo_status_t
+radeon_device_init (radeon_device_t *device, int fd);
+
+cairo_private void
+radeon_device_fini (radeon_device_t *device);
+
+cairo_private cairo_bool_t
+radeon_info (int fd,
+             uint64_t *gart_size,
+	     uint64_t *vram_size);
+
+cairo_private void
+radeon_bo_write (const radeon_device_t *dev,
+	         radeon_bo_t *bo,
+		 unsigned long offset,
+		 unsigned long size,
+		 const void *data);
+
+cairo_private void
+radeon_bo_read (const radeon_device_t *dev,
+	        radeon_bo_t *bo,
+	        unsigned long offset,
+		unsigned long size,
+		void *data);
+
+cairo_private void
+radeon_bo_wait (const radeon_device_t *dev, radeon_bo_t *bo);
+
+cairo_private void *
+radeon_bo_map (const radeon_device_t *dev, radeon_bo_t *bo);
+
+cairo_private void
+radeon_bo_unmap (radeon_bo_t *bo);
+
+cairo_private cairo_drm_bo_t *
+radeon_bo_create (radeon_device_t *dev,
+		  uint32_t size,
+		  uint32_t initial_domain);
+
+cairo_private cairo_drm_bo_t *
+radeon_bo_create_for_name (radeon_device_t *dev, uint32_t name);
+
+cairo_private cairo_surface_t *
+radeon_bo_get_image (const radeon_device_t *device,
+	             radeon_bo_t *bo,
+		     const cairo_drm_surface_t *surface);
+
+#endif /* CAIRO_DRM_RADEON_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-radeon-surface.c b/libs/cairo-1.16.0/src/drm/cairo-drm-radeon-surface.c
new file mode 100644
index 0000000..9c9f852
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-radeon-surface.c
@@ -0,0 +1,454 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-radeon-private.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+
+#include <stddef.h>
+#include <inttypes.h>		/* workaround for broken <drm/radeon_drm.h> */
+#include <drm/radeon_drm.h>
+
+/* Basic stub surface for radeon chipsets */
+
+#define MAX_SIZE 2048
+
+typedef struct _radeon_surface {
+    cairo_drm_surface_t base;
+} radeon_surface_t;
+
+static inline radeon_device_t *
+to_radeon_device (cairo_device_t *device)
+{
+    return (radeon_device_t *) device;
+}
+
+static inline radeon_bo_t *
+to_radeon_bo (cairo_drm_bo_t *bo)
+{
+    return (radeon_bo_t *) bo;
+}
+
+static cairo_surface_t *
+radeon_surface_create_similar (void			*abstract_surface,
+			      cairo_content_t		 content,
+			      int			 width,
+			      int			 height)
+{
+    return cairo_image_surface_create (_cairo_format_from_content (content),
+				       width, height);
+}
+
+static cairo_status_t
+radeon_surface_finish (void *abstract_surface)
+{
+    radeon_surface_t *surface = abstract_surface;
+
+    return _cairo_drm_surface_finish (&surface->base);
+}
+
+static cairo_status_t
+radeon_surface_acquire_source_image (void *abstract_surface,
+				     cairo_image_surface_t **image_out,
+				     void **image_extra)
+{
+    radeon_surface_t *surface = abstract_surface;
+    cairo_surface_t *image;
+    cairo_status_t status;
+
+    /* XXX batch flush */
+
+    if (surface->base.fallback != NULL) {
+	image = surface->base.fallback;
+	goto DONE;
+    }
+
+    image = _cairo_surface_has_snapshot (&surface->base.base,
+	                                 &_cairo_image_surface_backend);
+    if (image != NULL)
+	goto DONE;
+
+    if (surface->base.base.backend->flush != NULL) {
+	status = surface->base.base.backend->flush (surface);
+	if (unlikely (status))
+	    return status;
+    }
+
+    image = radeon_bo_get_image (to_radeon_device (surface->base.base.device),
+				to_radeon_bo (surface->base.bo),
+				&surface->base);
+    status = image->status;
+    if (unlikely (status))
+	return status;
+
+    _cairo_surface_attach_snapshot (&surface->base.base, image, cairo_surface_destroy);
+
+DONE:
+    *image_out = (cairo_image_surface_t *) cairo_surface_reference (image);
+    *image_extra = NULL;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+radeon_surface_release_source_image (void *abstract_surface,
+				     cairo_image_surface_t *image,
+				     void *image_extra)
+{
+    cairo_surface_destroy (&image->base);
+}
+
+static cairo_surface_t *
+radeon_surface_map_to_image (radeon_surface_t *surface)
+{
+    if (surface->base.fallback == NULL) {
+	cairo_surface_t *image;
+	cairo_status_t status;
+	void *ptr;
+
+	if (surface->base.base.backend->flush != NULL) {
+	    status = surface->base.base.backend->flush (surface);
+	    if (unlikely (status))
+		return _cairo_surface_create_in_error (status);
+	}
+
+	ptr = radeon_bo_map (to_radeon_device (surface->base.base.device),
+			    to_radeon_bo (surface->base.bo));
+	if (unlikely (ptr == NULL))
+	    return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+	image = cairo_image_surface_create_for_data (ptr,
+						     surface->base.format,
+						     surface->base.width,
+						     surface->base.height,
+						     surface->base.stride);
+	if (unlikely (image->status)) {
+	    radeon_bo_unmap (to_radeon_bo (surface->base.bo));
+	    return image;
+	}
+
+	surface->base.fallback = image;
+    }
+
+    return surface->base.fallback;
+}
+
+static cairo_status_t
+radeon_surface_flush (void *abstract_surface,
+		      unsigned flags)
+{
+    radeon_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->base.fallback == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* kill any outstanding maps */
+    cairo_surface_finish (surface->base.fallback);
+
+    status = cairo_surface_status (surface->base.fallback);
+    cairo_surface_destroy (surface->base.fallback);
+    surface->base.fallback = NULL;
+
+    radeon_bo_unmap (to_radeon_bo (surface->base.bo));
+
+    return status;
+}
+
+static cairo_int_status_t
+radeon_surface_paint (void *abstract_surface,
+		     cairo_operator_t		 op,
+		     const cairo_pattern_t	*source,
+		     cairo_clip_t		*clip)
+{
+    return _cairo_surface_paint (radeon_surface_map_to_image (abstract_surface),
+				 op, source, clip);
+}
+
+static cairo_int_status_t
+radeon_surface_mask (void			*abstract_surface,
+		    cairo_operator_t		 op,
+		    const cairo_pattern_t	*source,
+		    const cairo_pattern_t	*mask,
+		    cairo_clip_t		*clip)
+{
+    return _cairo_surface_mask (radeon_surface_map_to_image (abstract_surface),
+				op, source, mask, clip);
+}
+
+static cairo_int_status_t
+radeon_surface_stroke (void			*abstract_surface,
+		      cairo_operator_t		 op,
+		      const cairo_pattern_t	*source,
+		      cairo_path_fixed_t	*path,
+		      const cairo_stroke_style_t	*stroke_style,
+		      const cairo_matrix_t		*ctm,
+		      const cairo_matrix_t		*ctm_inverse,
+		      double			 tolerance,
+		      cairo_antialias_t		 antialias,
+		      cairo_clip_t		*clip)
+{
+    return _cairo_surface_stroke (radeon_surface_map_to_image (abstract_surface),
+				  op, source, path, stroke_style, ctm, ctm_inverse,
+				  tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+radeon_surface_fill (void			*abstract_surface,
+		    cairo_operator_t		 op,
+		    const cairo_pattern_t	*source,
+		    cairo_path_fixed_t		*path,
+		    cairo_fill_rule_t		 fill_rule,
+		    double			 tolerance,
+		    cairo_antialias_t		 antialias,
+		    cairo_clip_t		*clip)
+{
+    return _cairo_surface_fill (radeon_surface_map_to_image (abstract_surface),
+				op, source, path, fill_rule,
+				tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+radeon_surface_glyphs (void			*abstract_surface,
+		      cairo_operator_t		 op,
+		      const cairo_pattern_t	*source,
+		      cairo_glyph_t		*glyphs,
+		      int			 num_glyphs,
+		      cairo_scaled_font_t	*scaled_font,
+		      cairo_clip_t		*clip,
+		      int *num_remaining)
+{
+    *num_remaining = 0;
+    return _cairo_surface_show_text_glyphs (radeon_surface_map_to_image (abstract_surface),
+					    op, source,
+					    NULL, 0,
+					    glyphs, num_glyphs,
+					    NULL, 0, 0,
+					    scaled_font, clip);
+}
+
+static const cairo_surface_backend_t radeon_surface_backend = {
+    CAIRO_SURFACE_TYPE_DRM,
+    _cairo_default_context_create,
+
+    radeon_surface_create_similar,
+    radeon_surface_finish,
+
+    NULL,
+    radeon_surface_acquire_source_image,
+    radeon_surface_release_source_image,
+
+    NULL, NULL, NULL,
+    NULL, /* composite */
+    NULL, /* fill */
+    NULL, /* trapezoids */
+    NULL, /* span */
+    NULL, /* check-span */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+    _cairo_drm_surface_get_extents,
+    NULL, /* old-glyphs */
+    _cairo_drm_surface_get_font_options,
+
+    radeon_surface_flush,
+    NULL, /* mark dirty */
+    NULL, NULL, /* font/glyph fini */
+
+    radeon_surface_paint,
+    radeon_surface_mask,
+    radeon_surface_stroke,
+    radeon_surface_fill,
+    radeon_surface_glyphs,
+};
+
+static void
+radeon_surface_init (radeon_surface_t *surface,
+		     cairo_drm_device_t *device,
+		     cairo_format_t format,
+		     int width, int height)
+{
+    _cairo_surface_init (&surface->base.base,
+			 &radeon_surface_backend,
+			 &device->base,
+			 _cairo_content_from_format (format),
+			FALSE);
+    _cairo_drm_surface_init (&surface->base, format, width, height);
+}
+
+static cairo_surface_t *
+radeon_surface_create_internal (cairo_drm_device_t *device,
+				cairo_format_t format,
+				int width, int height)
+{
+    radeon_surface_t *surface;
+    cairo_status_t status;
+
+    surface = _cairo_malloc (sizeof (radeon_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    radeon_surface_init (surface, device, format, width, height);
+
+    if (width && height) {
+	surface->base.stride =
+	    cairo_format_stride_for_width (surface->base.format, width);
+
+	surface->base.bo = radeon_bo_create (to_radeon_device (&device->base),
+					     surface->base.stride * height,
+					     RADEON_GEM_DOMAIN_GTT);
+
+	if (unlikely (surface->base.bo == NULL)) {
+	    status = _cairo_drm_surface_finish (&surface->base);
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    return &surface->base.base;
+}
+
+static cairo_surface_t *
+radeon_surface_create (cairo_drm_device_t *device,
+		       cairo_format_t format,
+		       int width, int height)
+{
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_RGB16_565:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    }
+
+    return radeon_surface_create_internal (device, format, width, height);
+}
+
+static cairo_surface_t *
+radeon_surface_create_for_name (cairo_drm_device_t *device,
+			      unsigned int name,
+			      cairo_format_t format,
+			      int width, int height, int stride)
+{
+    radeon_surface_t *surface;
+    cairo_status_t status;
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_RGB16_565:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_A8:
+	break;
+    }
+
+    if (stride < cairo_format_stride_for_width (format, width))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
+
+    surface = _cairo_malloc (sizeof (radeon_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    radeon_surface_init (surface, device, format, width, height);
+
+    if (width && height) {
+	surface->base.stride = stride;
+
+	surface->base.bo = radeon_bo_create_for_name (to_radeon_device (&device->base),
+						      name);
+
+	if (unlikely (surface->base.bo == NULL)) {
+	    status = _cairo_drm_surface_finish (&surface->base);
+	    free (surface);
+	    return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	}
+    }
+
+    return &surface->base.base;
+}
+
+static void
+radeon_device_destroy (void *data)
+{
+    radeon_device_t *device = data;
+
+    radeon_device_fini (device);
+
+    free (data);
+}
+
+cairo_drm_device_t *
+_cairo_drm_radeon_device_create (int fd, dev_t dev, int vendor_id, int chip_id)
+{
+    radeon_device_t *device;
+    uint64_t gart_size, vram_size;
+    cairo_status_t status;
+
+    if (! radeon_info (fd, &gart_size, &vram_size))
+	return NULL;
+
+    device = _cairo_malloc (sizeof (radeon_device_t));
+    if (device == NULL)
+	return _cairo_drm_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = radeon_device_init (device, fd);
+    if (unlikely (status)) {
+	free (device);
+	return _cairo_drm_device_create_in_error (status);
+    }
+
+    device->base.surface.create = radeon_surface_create;
+    device->base.surface.create_for_name = radeon_surface_create_for_name;
+    device->base.surface.create_from_cacheable_image = NULL;
+    device->base.surface.flink = _cairo_drm_surface_flink;
+    device->base.surface.enable_scan_out = NULL;
+
+    device->base.device.flush = NULL;
+    device->base.device.throttle = NULL;
+    device->base.device.destroy = radeon_device_destroy;
+
+    device->vram_limit = vram_size;
+    device->gart_limit = gart_size;
+
+    return _cairo_drm_device_init (&device->base, fd, dev, vendor_id, chip_id, MAX_SIZE);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-radeon.c b/libs/cairo-1.16.0/src/drm/cairo-drm-radeon.c
new file mode 100644
index 0000000..8bc91bf
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-radeon.c
@@ -0,0 +1,331 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+#include "cairo-drm-radeon-private.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <drm/radeon_drm.h>
+
+cairo_bool_t
+radeon_info (int fd,
+             uint64_t *gart_size,
+	     uint64_t *vram_size)
+{
+    struct drm_radeon_gem_info info;
+    int ret;
+
+    ret = ioctl (fd, DRM_IOCTL_RADEON_GEM_INFO, &info);
+    if (ret == -1)
+	return FALSE;
+
+    if (gart_size != NULL)
+	*gart_size = info.gart_size;
+
+    if (vram_size != NULL)
+	*vram_size = info.vram_size;
+
+    return TRUE;
+}
+
+void
+radeon_bo_write (const radeon_device_t *device,
+	         radeon_bo_t *bo,
+		 unsigned long offset,
+		 unsigned long size,
+		 const void *data)
+{
+    struct drm_radeon_gem_pwrite pwrite;
+    int ret;
+
+    memset (&pwrite, 0, sizeof (pwrite));
+    pwrite.handle = bo->base.handle;
+    pwrite.offset = offset;
+    pwrite.size = size;
+    pwrite.data_ptr = (uint64_t) (uintptr_t) data;
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_RADEON_GEM_PWRITE, &pwrite);
+    } while (ret == -1 && errno == EINTR);
+
+    /* XXX temporary workaround */
+    if (ret == -1 && errno == ENOSYS) {
+	uint8_t *ptr;
+
+	ptr = radeon_bo_map (device, bo);
+	if (ptr != NULL) {
+	    memcpy (ptr + offset, data, size);
+	    radeon_bo_unmap (bo);
+	}
+    }
+}
+
+void
+radeon_bo_read (const radeon_device_t *device,
+	        radeon_bo_t *bo,
+	        unsigned long offset,
+		unsigned long size,
+		void *data)
+{
+    struct drm_radeon_gem_pread pread;
+    int ret;
+
+    memset (&pread, 0, sizeof (pread));
+    pread.handle = bo->base.handle;
+    pread.offset = offset;
+    pread.size = size;
+    pread.data_ptr = (uint64_t) (uintptr_t) data;
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_RADEON_GEM_PREAD, &pread);
+    } while (ret == -1 && errno == EINTR);
+
+    /* XXX temporary workaround */
+    if (ret == -1 && errno == ENOSYS) {
+	uint8_t *ptr;
+
+	ptr = radeon_bo_map (device, bo);
+	if (ptr != NULL) {
+	    memcpy (data, ptr + offset, size);
+	    radeon_bo_unmap (bo);
+	}
+    }
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (data, size));
+}
+
+void
+radeon_bo_wait (const radeon_device_t *device, radeon_bo_t *bo)
+{
+    struct drm_radeon_gem_wait_idle wait;
+    int ret;
+
+    wait.handle = bo->base.handle;
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_RADEON_GEM_WAIT_IDLE, &wait);
+    } while (ret == -1 && (errno == EINTR || errno == EBUSY));
+}
+
+void *
+radeon_bo_map (const radeon_device_t *device, radeon_bo_t *bo)
+{
+    struct drm_radeon_gem_mmap mmap_arg;
+    void *ptr;
+    int ret;
+
+    assert (bo->virtual == NULL);
+
+    memset (&mmap_arg, 0, sizeof (mmap_arg));
+    mmap_arg.handle = bo->base.handle;
+    mmap_arg.offset = 0;
+    mmap_arg.size = bo->base.size;
+
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_RADEON_GEM_MMAP, &mmap_arg);
+    } while (ret == -1 && errno == EINTR);
+    if (unlikely (ret != 0)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    VG (VALGRIND_MAKE_MEM_DEFINED (&mmap_arg, sizeof (mmap_arg)));
+
+    /* and mmap it */
+    ptr = mmap (0, bo->base.size, PROT_READ | PROT_WRITE,
+		MAP_SHARED, device->base.fd,
+		mmap_arg.addr_ptr);
+    if (unlikely (ptr == MAP_FAILED)) {
+	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return NULL;
+    }
+
+    bo->virtual = ptr;
+
+    /* XXX set_domain? */
+    return bo->virtual;
+}
+
+void
+radeon_bo_unmap (radeon_bo_t *bo)
+{
+    assert (bo->virtual != NULL);
+
+    munmap (bo->virtual, bo->base.size);
+    bo->virtual = NULL;
+}
+
+cairo_drm_bo_t *
+radeon_bo_create (radeon_device_t *device,
+		  uint32_t size,
+		  uint32_t initial_domain)
+{
+    struct drm_radeon_gem_create create;
+    radeon_bo_t *bo;
+    int ret;
+
+    bo = _cairo_freepool_alloc (&device->bo_pool);
+    if (unlikely (bo == NULL))
+	return NULL;
+
+    create.size = size;
+    create.alignment = 0;
+    create.initial_domain = initial_domain;
+    create.flags = 0;
+    create.handle = 0;
+
+    do {
+	ret = ioctl (device->base.fd, DRM_IOCTL_RADEON_GEM_CREATE, &create);
+    } while (ret == -1 && errno == EINTR);
+    if (ret == -1) {
+	_cairo_freepool_free (&device->bo_pool, bo);
+	return NULL;
+    }
+
+    bo->base.handle = create.handle;
+    bo->base.size = size;
+
+    bo->virtual = NULL;
+
+    bo->in_batch = FALSE;
+    bo->read_domains = 0;
+    bo->write_domain = 0;
+
+    CAIRO_REFERENCE_COUNT_INIT (&bo->base.ref_count, 1);
+    return &bo->base;
+}
+
+cairo_drm_bo_t *
+radeon_bo_create_for_name (radeon_device_t *device,
+			   uint32_t name)
+{
+    radeon_bo_t *bo;
+    cairo_status_t status;
+
+    bo = _cairo_freepool_alloc (&device->bo_pool);
+    if (unlikely (bo == NULL))
+	return NULL;
+
+    status = _cairo_drm_bo_open_for_name (&device->base, &bo->base, name);
+    if (unlikely (status)) {
+	_cairo_freepool_free (&device->bo_pool, bo);
+	return NULL;
+    }
+
+    bo->virtual = NULL;
+
+    bo->in_batch = FALSE;
+    bo->read_domains = 0;
+    bo->write_domain = 0;
+
+    CAIRO_REFERENCE_COUNT_INIT (&bo->base.ref_count, 1);
+    return &bo->base;
+}
+
+static void
+radeon_bo_release (void *_dev, void *_bo)
+{
+    radeon_device_t *device = _dev;
+    radeon_bo_t *bo = _bo;
+
+    _cairo_drm_bo_close (&device->base, &bo->base);
+    _cairo_freepool_free (&device->bo_pool, bo);
+}
+
+cairo_surface_t *
+radeon_bo_get_image (const radeon_device_t *device,
+	             radeon_bo_t *bo,
+		     const cairo_drm_surface_t *surface)
+{
+    cairo_image_surface_t *image;
+    uint8_t *dst;
+    int size, row;
+
+    image = (cairo_image_surface_t *)
+	cairo_image_surface_create (surface->format,
+				    surface->width,
+				    surface->height);
+    if (unlikely (image->base.status))
+	return &image->base;
+
+    if (image->stride == surface->stride) {
+	size = surface->stride * surface->height;
+	radeon_bo_read (device, bo, 0, size, image->data);
+    } else {
+	int offset;
+
+	size = surface->width;
+	if (surface->format != CAIRO_FORMAT_A8)
+	    size *= 4;
+
+	offset = 0;
+	row = surface->height;
+	dst = image->data;
+	while (row--) {
+	    radeon_bo_read (device, bo, offset, size, dst);
+	    offset += surface->stride;
+	    dst += image->stride;
+	}
+    }
+
+    return &image->base;
+}
+
+static void
+_radeon_device_init_bo_cache (radeon_device_t *device)
+{
+    _cairo_freepool_init (&device->bo_pool, sizeof (radeon_bo_t));
+}
+
+cairo_status_t
+radeon_device_init (radeon_device_t *device, int fd)
+{
+    _radeon_device_init_bo_cache (device);
+
+    device->base.bo.release = radeon_bo_release;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_radeon_bo_cache_fini (radeon_device_t *device)
+{
+    _cairo_freepool_fini (&device->bo_pool);
+}
+
+void
+radeon_device_fini (radeon_device_t *device)
+{
+    _radeon_bo_cache_fini (device);
+    _cairo_drm_device_fini (&device->base);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm-surface.c b/libs/cairo-1.16.0/src/drm/cairo-drm-surface.c
new file mode 100644
index 0000000..8c4dd0e
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm-surface.c
@@ -0,0 +1,369 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+
+void
+_cairo_drm_surface_init (cairo_drm_surface_t *surface,
+			 cairo_format_t format,
+			 int width, int height)
+{
+    surface->bo = NULL;
+    surface->format = format;
+    surface->width  = width;
+    surface->height = height;
+    surface->stride = 0;
+
+    surface->fallback = NULL;
+    surface->map_count = 0;
+}
+
+cairo_status_t
+_cairo_drm_surface_finish (cairo_drm_surface_t *surface)
+{
+    assert (surface->fallback == NULL);
+
+    if (surface->bo != NULL)
+	cairo_drm_bo_destroy (surface->base.device, surface->bo);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+void
+_cairo_drm_surface_get_font_options (void                  *abstract_surface,
+				     cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_ON);
+}
+
+cairo_bool_t
+_cairo_drm_surface_get_extents (void *abstract_surface,
+			        cairo_rectangle_int_t *rectangle)
+{
+    cairo_drm_surface_t *surface = abstract_surface;
+
+    rectangle->x = 0;
+    rectangle->y = 0;
+    rectangle->width  = surface->width;
+    rectangle->height = surface->height;
+
+    return TRUE;
+}
+
+cairo_surface_t *
+cairo_drm_surface_create (cairo_device_t *abstract_device,
+			  cairo_format_t format,
+			  int width, int height)
+{
+    cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+    cairo_surface_t *surface;
+
+    if (device != NULL && device->base.status)
+    {
+	surface = _cairo_surface_create_in_error (device->base.status);
+    }
+    else if (device == NULL ||
+	     device->surface.create == NULL ||
+	     width == 0 || width > device->max_surface_size ||
+	     height == 0 || height > device->max_surface_size)
+    {
+	surface = cairo_image_surface_create (format, width, height);
+    }
+    else if (device->base.finished)
+    {
+	surface = _cairo_surface_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+    }
+    else
+    {
+	surface = device->surface.create (device, format, width, height);
+	if (surface->status == CAIRO_STATUS_INVALID_SIZE)
+	    surface = cairo_image_surface_create (format, width, height);
+    }
+
+    return surface;
+}
+
+cairo_surface_t *
+cairo_drm_surface_create_for_name (cairo_device_t *abstract_device,
+				   unsigned int name,
+	                           cairo_format_t format,
+				   int width, int height, int stride)
+{
+    cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+    cairo_surface_t *surface;
+
+    if (! CAIRO_FORMAT_VALID (format))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    if (device != NULL && device->base.status)
+    {
+	surface = _cairo_surface_create_in_error (device->base.status);
+    }
+    else if (device == NULL || device->surface.create_for_name == NULL)
+    {
+	/* XXX invalid device! */
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    }
+    else if (width == 0 || width > device->max_surface_size ||
+	     height == 0 || height > device->max_surface_size)
+    {
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE));
+    }
+    else if (device->base.finished)
+    {
+	surface = _cairo_surface_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+    }
+    else
+    {
+	surface = device->surface.create_for_name (device,
+	                                             name, format,
+						     width, height, stride);
+    }
+
+    return surface;
+}
+slim_hidden_def (cairo_drm_surface_create_for_name);
+
+cairo_surface_t *
+cairo_drm_surface_create_from_cacheable_image (cairo_device_t *abstract_device,
+	                                       cairo_surface_t *surface)
+{
+    cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+
+    if (surface->status) {
+	surface = _cairo_surface_create_in_error (surface->status);
+    } else if (device != NULL && device->base.status) {
+	surface = _cairo_surface_create_in_error (device->base.status);
+    } else if (device == NULL || device->surface.create_from_cacheable_image == NULL) {
+	/* XXX invalid device! */
+	surface = _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    } else if (device->base.finished) {
+	surface = _cairo_surface_create_in_error (CAIRO_STATUS_SURFACE_FINISHED);
+    } else {
+	surface = device->surface.create_from_cacheable_image (device, surface);
+    }
+
+    return surface;
+}
+
+static cairo_drm_surface_t *
+_cairo_surface_as_drm (cairo_surface_t *abstract_surface)
+{
+    if (unlikely (abstract_surface->status))
+	return NULL;
+
+    if (abstract_surface->type != CAIRO_SURFACE_TYPE_DRM)
+	return NULL;
+
+    return (cairo_drm_surface_t *) abstract_surface;
+}
+
+cairo_status_t
+cairo_drm_surface_enable_scan_out (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+    cairo_drm_device_t *device;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (unlikely (surface == NULL))
+	return _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+    if (unlikely (surface->base.finished))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    device = (cairo_drm_device_t *) surface->base.device;
+    if (device->surface.enable_scan_out == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (unlikely (device->base.finished))
+	return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
+
+    return device->surface.enable_scan_out (abstract_surface);
+}
+
+unsigned int
+cairo_drm_surface_get_handle (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    return surface->bo->handle;
+}
+
+cairo_int_status_t
+_cairo_drm_surface_flink (void *abstract_surface)
+{
+    cairo_drm_surface_t *surface = abstract_surface;
+
+    return _cairo_drm_bo_flink ((cairo_drm_device_t *) surface->base.device,
+				surface->bo);
+}
+
+unsigned int
+cairo_drm_surface_get_name (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+    cairo_drm_device_t *device;
+    cairo_status_t status;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL) {
+	_cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return 0;
+    }
+
+    if (surface->bo->name)
+	return surface->bo->name;
+
+    device = (cairo_drm_device_t *) surface->base.device;
+    if (device->surface.flink == NULL)
+	return 0;
+
+    status = device->surface.flink (abstract_surface);
+    if (status) {
+	if (_cairo_status_is_error (status))
+	    status = _cairo_surface_set_error (abstract_surface, status);
+
+	return 0;
+    }
+
+    return surface->bo->name;
+}
+
+cairo_format_t
+cairo_drm_surface_get_format (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL)
+	return cairo_image_surface_get_format (abstract_surface);
+
+    return surface->format;
+}
+
+int
+cairo_drm_surface_get_width (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL)
+	return cairo_image_surface_get_width (abstract_surface);
+
+    return surface->width;
+}
+
+int
+cairo_drm_surface_get_height (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL)
+	return cairo_image_surface_get_height (abstract_surface);
+
+    return surface->height;
+}
+
+int
+cairo_drm_surface_get_stride (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL)
+	return cairo_image_surface_get_stride (abstract_surface);
+
+    return surface->stride;
+}
+
+/* XXX drm or general surface layer? naming? */
+cairo_surface_t *
+cairo_drm_surface_map_to_image (cairo_surface_t *abstract_surface)
+{
+    cairo_drm_surface_t *surface;
+    cairo_drm_device_t *device;
+    cairo_status_t status;
+
+    if (unlikely (abstract_surface->status))
+	return _cairo_surface_create_in_error (abstract_surface->status);
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL) {
+	if (_cairo_surface_is_image (abstract_surface))
+	    return cairo_surface_reference (abstract_surface);
+
+	status = _cairo_surface_set_error (abstract_surface,
+					   CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    surface->map_count++;
+    device = (cairo_drm_device_t *) surface->base.device;
+    return cairo_surface_reference (device->surface.map_to_image (surface));
+}
+
+void
+cairo_drm_surface_unmap (cairo_surface_t *abstract_surface,
+	                 cairo_surface_t *image)
+{
+    cairo_drm_surface_t *surface;
+
+    surface = _cairo_surface_as_drm (abstract_surface);
+    if (surface == NULL) {
+	if (_cairo_surface_is_image (abstract_surface))
+	    cairo_surface_destroy (image);
+	else
+	    _cairo_error_throw (CAIRO_STATUS_SURFACE_TYPE_MISMATCH);
+	return;
+    }
+
+    /* XXX assert image belongs to drm */
+    //assert (image == drm->fallback);
+    cairo_surface_destroy (image);
+
+    assert (surface->map_count > 0);
+    if (--surface->map_count == 0)
+	cairo_surface_flush (&surface->base);
+}
diff --git a/libs/cairo-1.16.0/src/drm/cairo-drm.c b/libs/cairo-1.16.0/src/drm/cairo-drm.c
new file mode 100644
index 0000000..661e181
--- /dev/null
+++ b/libs/cairo-1.16.0/src/drm/cairo-drm.c
@@ -0,0 +1,390 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2009 Chris Wilson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Chris Wilson.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-drm-private.h"
+
+#include "cairo-device-private.h"
+#include "cairo-error-private.h"
+
+#define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE
+#include <libudev.h>
+#include <fcntl.h>
+#include <unistd.h> /* open(), close() */
+
+static cairo_drm_device_t *_cairo_drm_known_devices;
+static cairo_drm_device_t *_cairo_drm_default_device;
+
+static const char *
+get_udev_property(struct udev_device *device, const char *name)
+{
+    struct udev_list_entry *entry;
+
+    udev_list_entry_foreach (entry,
+	                     udev_device_get_properties_list_entry (device))
+    {
+	if (strcmp (udev_list_entry_get_name (entry), name) == 0)
+	    return udev_list_entry_get_value (entry);
+    }
+
+    return NULL;
+}
+
+static void
+_device_flush (void *abstract_device)
+{
+    cairo_drm_device_t *device = abstract_device;
+
+    device->device.flush (device);
+}
+
+static void
+_device_finish (void *abstract_device)
+{
+    cairo_drm_device_t *device = abstract_device;
+
+    CAIRO_MUTEX_LOCK (_cairo_drm_device_mutex);
+    if (device->prev != NULL)
+	device->prev->next = device->next;
+    else
+	_cairo_drm_known_devices = device->next;
+    if (device->next != NULL)
+	device->next->prev = device->prev;
+
+    CAIRO_MUTEX_UNLOCK (_cairo_drm_device_mutex);
+
+    if (_cairo_atomic_ptr_cmpxchg (&_cairo_drm_default_device,
+				   device, NULL))
+    {
+	cairo_device_destroy (&device->base);
+    }
+}
+
+static void
+_device_destroy (void *abstract_device)
+{
+    cairo_drm_device_t *device = abstract_device;
+
+    device->device.destroy (device);
+}
+
+static const cairo_device_backend_t _cairo_drm_device_backend = {
+    CAIRO_DEVICE_TYPE_DRM,
+
+    NULL, NULL, /* lock, unlock */
+
+    _device_flush,
+    _device_finish,
+    _device_destroy,
+};
+
+cairo_drm_device_t *
+_cairo_drm_device_init (cairo_drm_device_t *dev,
+			int fd,
+			dev_t devid,
+			int vendor_id,
+			int chip_id,
+			int max_surface_size)
+{
+    assert (CAIRO_MUTEX_IS_LOCKED (_cairo_drm_device_mutex));
+
+    _cairo_device_init (&dev->base, &_cairo_drm_device_backend);
+
+    dev->id = devid;
+    dev->vendor_id = vendor_id;
+    dev->chip_id = chip_id;
+    dev->fd = fd;
+
+    dev->max_surface_size = max_surface_size;
+
+    dev->prev = NULL;
+    dev->next = _cairo_drm_known_devices;
+    if (_cairo_drm_known_devices != NULL)
+	_cairo_drm_known_devices->prev = dev;
+    _cairo_drm_known_devices = dev;
+
+    if (_cairo_drm_default_device == NULL)
+	_cairo_drm_default_device = (cairo_drm_device_t *) cairo_device_reference (&dev->base);
+
+    return dev;
+}
+
+cairo_device_t *
+cairo_drm_device_get (struct udev_device *device)
+{
+    static const struct dri_driver_entry {
+	uint32_t vendor_id;
+	uint32_t chip_id;
+	cairo_drm_device_create_func_t create_func;
+    } driver_map[] = {
+	{ 0x8086, 0x29a2, _cairo_drm_i965_device_create }, /* I965_G */
+	{ 0x8086, 0x2982, _cairo_drm_i965_device_create }, /* G35_G */
+	{ 0x8086, 0x2992, _cairo_drm_i965_device_create }, /* I965_Q */
+	{ 0x8086, 0x2972, _cairo_drm_i965_device_create }, /* I946_GZ */
+	{ 0x8086, 0x2a02, _cairo_drm_i965_device_create }, /* I965_GM */
+	{ 0x8086, 0x2a12, _cairo_drm_i965_device_create }, /* I965_GME */
+	{ 0x8086, 0x2e02, _cairo_drm_i965_device_create }, /* IGD_E_G */
+	{ 0x8086, 0x2e22, _cairo_drm_i965_device_create }, /* G45_G */
+	{ 0x8086, 0x2e12, _cairo_drm_i965_device_create }, /* Q45_G */
+	{ 0x8086, 0x2e32, _cairo_drm_i965_device_create }, /* G41_G */
+	{ 0x8086, 0x2a42, _cairo_drm_i965_device_create }, /* GM45_GM */
+
+	{ 0x8086, 0x2582, _cairo_drm_i915_device_create }, /* I915_G */
+	{ 0x8086, 0x2592, _cairo_drm_i915_device_create }, /* I915_GM */
+	{ 0x8086, 0x258a, _cairo_drm_i915_device_create }, /* E7221_G */
+	{ 0x8086, 0x2772, _cairo_drm_i915_device_create }, /* I945_G */
+	{ 0x8086, 0x27a2, _cairo_drm_i915_device_create }, /* I945_GM */
+	{ 0x8086, 0x27ae, _cairo_drm_i915_device_create }, /* I945_GME */
+	{ 0x8086, 0x29c2, _cairo_drm_i915_device_create }, /* G33_G */
+	{ 0x8086, 0x29b2, _cairo_drm_i915_device_create }, /* Q35_G */
+	{ 0x8086, 0x29d2, _cairo_drm_i915_device_create }, /* Q33_G */
+	{ 0x8086, 0xa011, _cairo_drm_i915_device_create }, /* IGD_GM */
+	{ 0x8086, 0xa001, _cairo_drm_i915_device_create }, /* IGD_G */
+
+	/* XXX i830 */
+
+	{ 0x8086, ~0, _cairo_drm_intel_device_create },
+
+	{ 0x1002, ~0, _cairo_drm_radeon_device_create },
+#if CAIRO_HAS_GALLIUM_SURFACE
+	{ ~0, ~0, _cairo_drm_gallium_device_create },
+#endif
+    };
+
+    cairo_drm_device_t *dev;
+    dev_t devid;
+    struct udev_device *parent;
+    const char *pci_id;
+    uint32_t vendor_id, chip_id;
+    const char *path;
+    int i, fd;
+
+    devid = udev_device_get_devnum (device);
+
+    CAIRO_MUTEX_LOCK (_cairo_drm_device_mutex);
+    for (dev = _cairo_drm_known_devices; dev != NULL; dev = dev->next) {
+	if (dev->id == devid) {
+	    dev = (cairo_drm_device_t *) cairo_device_reference (&dev->base);
+	    goto DONE;
+	}
+    }
+
+    parent = udev_device_get_parent (device);
+    pci_id = get_udev_property (parent, "PCI_ID");
+    if (pci_id == NULL || sscanf (pci_id, "%x:%x", &vendor_id, &chip_id) != 2) {
+        dev = NULL;
+	goto DONE;
+    }
+
+#if CAIRO_HAS_GALLIUM_SURFACE
+    if (getenv ("CAIRO_GALLIUM_FORCE"))
+    {
+	i = ARRAY_LENGTH (driver_map) - 1;
+    }
+    else
+#endif
+    {
+	for (i = 0; i < ARRAY_LENGTH (driver_map); i++) {
+	    if (driver_map[i].vendor_id == ~0U)
+		break;
+
+	    if (driver_map[i].vendor_id == vendor_id &&
+		(driver_map[i].chip_id == ~0U || driver_map[i].chip_id == chip_id))
+		break;
+	}
+
+	if (i == ARRAY_LENGTH (driver_map)) {
+	    dev = (cairo_drm_device_t *)
+		_cairo_device_create_in_error (CAIRO_STATUS_DEVICE_ERROR);
+	    goto DONE;
+	}
+    }
+
+    path = udev_device_get_devnode (device);
+    if (path == NULL)
+	path = "/dev/dri/card0"; /* XXX buggy udev? */
+
+    fd = open (path, O_RDWR);
+    if (fd == -1) {
+	/* XXX more likely to be a permissions issue... */
+	_cairo_error_throw (CAIRO_STATUS_FILE_NOT_FOUND);
+	dev = NULL;
+	goto DONE;
+    }
+
+    dev = driver_map[i].create_func (fd, devid, vendor_id, chip_id);
+    if (dev == NULL)
+	close (fd);
+
+  DONE:
+    CAIRO_MUTEX_UNLOCK (_cairo_drm_device_mutex);
+
+    if (dev == NULL)
+        return _cairo_device_create_in_error (CAIRO_STATUS_DEVICE_ERROR);
+    else
+        return &dev->base;
+}
+slim_hidden_def (cairo_drm_device_get);
+
+cairo_device_t *
+cairo_drm_device_get_for_fd (int fd)
+{
+    struct stat st;
+    struct udev *udev;
+    struct udev_device *device;
+    cairo_device_t *dev = NULL;
+
+    if (fstat (fd, &st) < 0 || ! S_ISCHR (st.st_mode)) {
+	//_cairo_error_throw (CAIRO_STATUS_INVALID_DEVICE);
+	return _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    udev = udev_new ();
+
+    device = udev_device_new_from_devnum (udev, 'c', st.st_rdev);
+    if (device != NULL) {
+	dev = cairo_drm_device_get (device);
+	udev_device_unref (device);
+    }
+
+    udev_unref (udev);
+
+    return dev;
+}
+slim_hidden_def (cairo_drm_device_get_for_fd);
+
+cairo_device_t *
+cairo_drm_device_default (void)
+{
+    struct udev *udev;
+    struct udev_enumerate *e;
+    struct udev_list_entry *entry;
+    cairo_device_t *dev;
+
+    /* optimistic atomic pointer read */
+    dev = &_cairo_drm_default_device->base;
+    if (dev != NULL)
+	return dev;
+
+    udev = udev_new();
+    if (udev == NULL)
+	return _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
+
+    e = udev_enumerate_new (udev);
+    udev_enumerate_add_match_subsystem (e, "drm");
+    udev_enumerate_scan_devices (e);
+    udev_list_entry_foreach (entry, udev_enumerate_get_list_entry (e)) {
+	struct udev_device *device;
+
+	device =
+	    udev_device_new_from_syspath (udev,
+		    udev_list_entry_get_name (entry));
+
+	dev = cairo_drm_device_get (device);
+
+	udev_device_unref (device);
+
+	if (dev != NULL) {
+	    if (((cairo_drm_device_t *) dev)->fd == -1) {
+		/* try again, we may find a usable card */
+		cairo_device_destroy (dev);
+		dev = NULL;
+	    } else
+		break;
+	}
+    }
+    udev_enumerate_unref (e);
+    udev_unref (udev);
+
+    cairo_device_destroy (dev); /* owned by _cairo_drm_default_device */
+    return dev;
+}
+slim_hidden_def (cairo_drm_device_default);
+
+void
+_cairo_drm_device_reset_static_data (void)
+{
+    if (_cairo_drm_default_device != NULL) {
+	cairo_device_t *device = &_cairo_drm_default_device->base;
+	_cairo_drm_default_device = NULL;
+	cairo_device_destroy (device);
+    }
+}
+
+int
+cairo_drm_device_get_fd (cairo_device_t *abstract_device)
+{
+    cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+
+    if (device->base.status)
+	return -1;
+
+    return device->fd;
+}
+
+void
+_cairo_drm_device_fini (cairo_drm_device_t *device)
+{
+    if (device->fd != -1)
+	close (device->fd);
+}
+
+void
+cairo_drm_device_throttle (cairo_device_t *abstract_device)
+{
+    cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+    cairo_status_t status;
+
+    if (unlikely (device->base.status))
+	return;
+
+    if (device->device.throttle == NULL)
+	return;
+
+    status = device->device.throttle (device);
+    if (unlikely (status))
+	_cairo_status_set_error (&device->base.status, status);
+}
+
+cairo_bool_t
+_cairo_drm_size_is_valid (cairo_device_t *abstract_device,
+			  int width, int height)
+{
+    cairo_drm_device_t *device = (cairo_drm_device_t *) abstract_device;
+
+    if (unlikely (device->base.status))
+	return FALSE;
+
+    return width  <= device->max_surface_size &&
+	   height <= device->max_surface_size;
+}
diff --git a/libs/cairo-1.16.0/src/sources.cmake b/libs/cairo-1.16.0/src/sources.cmake
new file mode 100644
index 0000000..56d636d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/sources.cmake
@@ -0,0 +1,436 @@
+set(cairo_headers cairo.h cairo-deprecated.h)
+
+set(cairo_private
+    cairoint.h
+    cairo-analysis-surface-private.h
+    cairo-arc-private.h
+    cairo-array-private.h
+    cairo-atomic-private.h
+    cairo-backend-private.h
+    cairo-box-inline.h
+    cairo-boxes-private.h
+    cairo-cache-private.h
+    cairo-clip-inline.h
+    cairo-clip-private.h
+    cairo-combsort-inline.h
+    cairo-compiler-private.h
+    cairo-compositor-private.h
+    cairo-contour-inline.h
+    cairo-contour-private.h
+    cairo-composite-rectangles-private.h
+    cairo-damage-private.h
+    cairo-default-context-private.h
+    cairo-device-private.h
+    cairo-error-inline.h
+    cairo-error-private.h
+    cairo-fixed-private.h
+    cairo-fixed-type-private.h
+    cairo-freelist-private.h
+    cairo-freelist-type-private.h
+    cairo-freed-pool-private.h
+    cairo-fontconfig-private.h
+    cairo-gstate-private.h
+    cairo-hash-private.h
+    cairo-image-info-private.h
+    cairo-image-surface-inline.h
+    cairo-image-surface-private.h
+    cairo-line-inline.h
+    cairo-line-private.h
+    cairo-list-inline.h
+    cairo-list-private.h
+    cairo-malloc-private.h
+    cairo-mempool-private.h
+    cairo-mutex-impl-private.h
+    cairo-mutex-list-private.h
+    cairo-mutex-private.h
+    cairo-mutex-type-private.h
+    cairo-output-stream-private.h
+    cairo-paginated-private.h
+    cairo-paginated-surface-private.h
+    cairo-path-fixed-private.h
+    cairo-path-private.h
+    cairo-pattern-inline.h
+    cairo-pattern-private.h
+    cairo-pixman-private.h
+    cairo-private.h
+    cairo-recording-surface-inline.h
+    cairo-recording-surface-private.h
+    cairo-reference-count-private.h
+    cairo-region-private.h
+    cairo-rtree-private.h
+    cairo-scaled-font-private.h
+    cairo-slope-private.h
+    cairo-spans-private.h
+    cairo-spans-compositor-private.h
+    cairo-stroke-dash-private.h
+    cairo-surface-inline.h
+    cairo-surface-private.h
+    cairo-surface-backend-private.h
+    cairo-surface-clipper-private.h
+    cairo-surface-fallback-private.h
+    cairo-surface-observer-inline.h
+    cairo-surface-observer-private.h
+    cairo-surface-offset-private.h
+    cairo-surface-subsurface-inline.h
+    cairo-surface-subsurface-private.h
+    cairo-surface-snapshot-inline.h
+    cairo-surface-snapshot-private.h
+    cairo-surface-wrapper-private.h
+    cairo-tag-attributes-private.h
+    cairo-tag-stack-private.h
+    cairo-time-private.h
+    cairo-types-private.h
+    cairo-traps-private.h
+    cairo-tristrip-private.h
+    cairo-user-font-private.h
+    cairo-wideint-private.h
+    cairo-wideint-type-private.h 
+)
+
+set(cairo_sources
+    cairo-analysis-surface.c 
+    cairo-arc.c 
+    cairo-array.c 
+    cairo-atomic.c 
+    cairo-base64-stream.c 
+    cairo-base85-stream.c 
+    cairo-bentley-ottmann.c 
+    cairo-bentley-ottmann-rectangular.c 
+    cairo-bentley-ottmann-rectilinear.c 
+    cairo-botor-scan-converter.c 
+    cairo-boxes.c 
+    cairo-boxes-intersect.c 
+    cairo.c 
+    cairo-cache.c 
+    cairo-clip.c 
+    cairo-clip-boxes.c 
+    cairo-clip-polygon.c 
+    cairo-clip-region.c 
+    cairo-clip-surface.c 
+    cairo-color.c 
+    cairo-composite-rectangles.c 
+    cairo-compositor.c 
+    cairo-contour.c 
+    cairo-damage.c 
+    cairo-debug.c 
+    cairo-default-context.c 
+    cairo-device.c 
+    cairo-error.c 
+    cairo-fallback-compositor.c 
+    cairo-fixed.c 
+    cairo-font-face.c 
+    cairo-font-face-twin.c 
+    cairo-font-face-twin-data.c 
+    cairo-font-options.c 
+    cairo-freelist.c 
+    cairo-freed-pool.c 
+    cairo-gstate.c 
+    cairo-hash.c 
+    cairo-hull.c 
+    cairo-image-compositor.c 
+    cairo-image-info.c 
+    cairo-image-source.c 
+    cairo-image-surface.c 
+    cairo-line.c
+    cairo-lzw.c 
+    cairo-matrix.c 
+    cairo-mask-compositor.c 
+    cairo-mesh-pattern-rasterizer.c 
+    cairo-mempool.c 
+    cairo-misc.c 
+    cairo-mono-scan-converter.c 
+    cairo-mutex.c 
+    cairo-no-compositor.c 
+    cairo-observer.c 
+    cairo-output-stream.c 
+    cairo-paginated-surface.c 
+    cairo-path-bounds.c 
+    cairo-path.c 
+    cairo-path-fill.c 
+    cairo-path-fixed.c 
+    cairo-path-in-fill.c 
+    cairo-path-stroke.c 
+    cairo-path-stroke-boxes.c 
+    cairo-path-stroke-polygon.c 
+    cairo-path-stroke-traps.c 
+    cairo-path-stroke-tristrip.c 
+    cairo-pattern.c 
+    cairo-pen.c 
+    cairo-polygon.c 
+    cairo-polygon-intersect.c 
+    cairo-polygon-reduce.c 
+    cairo-raster-source-pattern.c 
+    cairo-recording-surface.c 
+    cairo-rectangle.c 
+    cairo-rectangular-scan-converter.c 
+    cairo-region.c 
+    cairo-rtree.c 
+    cairo-scaled-font.c 
+    cairo-shape-mask-compositor.c 
+    cairo-slope.c 
+    cairo-spans.c 
+    cairo-spans-compositor.c 
+    cairo-spline.c 
+    cairo-stroke-dash.c 
+    cairo-stroke-style.c 
+    cairo-surface.c 
+    cairo-surface-clipper.c 
+    cairo-surface-fallback.c 
+    cairo-surface-observer.c 
+    cairo-surface-offset.c 
+    cairo-surface-snapshot.c 
+    cairo-surface-subsurface.c 
+    cairo-surface-wrapper.c 
+    cairo-tag-attributes.c
+    cairo-tag-stack.c
+    cairo-time.c 
+    cairo-tor-scan-converter.c 
+    cairo-tor22-scan-converter.c 
+    cairo-clip-tor-scan-converter.c 
+    cairo-toy-font-face.c 
+    cairo-traps.c 
+    cairo-tristrip.c 
+    cairo-traps-compositor.c 
+    cairo-unicode.c 
+    cairo-user-font.c 
+    cairo-version.c 
+    cairo-wideint.c 
+)
+
+set(_cairo_font_subset_private
+    cairo-scaled-font-subsets-private.h
+    cairo-truetype-subset-private.h
+    cairo-type1-private.h
+    cairo-type3-glyph-surface-private.h
+)
+set(_cairo_font_subset_sources
+    cairo-cff-subset.c
+    cairo-scaled-font-subsets.c
+    cairo-truetype-subset.c
+    cairo-type1-fallback.c
+    cairo-type1-glyph-names.c
+    cairo-type1-subset.c
+    cairo-type3-glyph-surface.c
+)
+
+list(APPEND cairo_private ${_cairo_font_subset_private})
+list(APPEND cairo_sources ${_cairo_font_subset_sources})
+
+set(cairo_egl_sources)
+set(cairo_glx_sources)
+set(cairo_wgl_sources)
+
+set(_cairo_pdf_operators_private cairo-pdf-operators-private.h cairo-pdf-shading-private.h)
+set(_cairo_pdf_operators_sources cairo-pdf-operators.c cairo-pdf-shading.c)
+list(APPEND cairo_private ${_cairo_pdf_operators_private})
+list(APPEND cairo_sources ${_cairo_pdf_operators_sources})
+
+set(cairo_png_sources cairo-png.c)
+
+set(cairo_ps_headers cairo-ps.h)
+set(cairo_ps_private cairo-ps-surface-private.h)
+set(cairo_ps_sources cairo-ps-surface.c)
+
+set(_cairo_deflate_stream_sources cairo-deflate-stream.c)
+list(APPEND cairo_sources ${_cairo_deflate_stream_sources})
+
+set(cairo_pdf_headers cairo-pdf.h)
+set(cairo_pdf_private cairo-pdf-surface-private.h)
+set(cairo_pdf_sources cairo-pdf-surface.c cairo-pdf-interchange.c)
+
+set(cairo_svg_headers cairo-svg.h)
+set(cairo_svg_private cairo-svg-surface-private.h)
+set(cairo_svg_sources cairo-svg-surface.c)
+
+set(cairo_ft_headers cairo-ft.h)
+set(cairo_ft_private cairo-ft-private.h)
+set(cairo_ft_sources cairo-ft-font.c)
+
+# These are private, even though they look like public headers
+set(cairo_test_surfaces_private
+    test-compositor-surface.h
+    test-compositor-surface-private.h
+    test-null-compositor-surface.h
+    test-paginated-surface.h 
+)
+set(cairo_test_surfaces_sources
+    test-compositor-surface.c
+    test-null-compositor-surface.c
+    test-base-compositor-surface.c
+    test-paginated-surface.c
+)
+
+set(cairo_xlib_headers cairo-xlib.h)
+set(cairo_xlib_private
+    cairo-xlib-private.h
+    cairo-xlib-surface-private.h
+    cairo-xlib-xrender-private.h
+)
+set(cairo_xlib_sources
+    cairo-xlib-display.c
+    cairo-xlib-core-compositor.c
+    cairo-xlib-fallback-compositor.c
+    cairo-xlib-render-compositor.c
+    cairo-xlib-screen.c
+    cairo-xlib-source.c
+    cairo-xlib-surface.c
+    cairo-xlib-surface-shm.c
+    cairo-xlib-visual.c
+    cairo-xlib-xcb-surface.c
+)
+
+set(cairo_xlib_xrender_headers cairo-xlib-xrender.h)
+
+set(cairo_xcb_headers cairo-xcb.h)
+set(cairo_xcb_private cairo-xcb-private.h)
+set(cairo_xcb_sources
+    cairo-xcb-connection.c
+    cairo-xcb-connection-core.c
+    cairo-xcb-connection-render.c
+    cairo-xcb-connection-shm.c
+    cairo-xcb-screen.c
+    cairo-xcb-shm.c
+    cairo-xcb-surface.c
+    cairo-xcb-surface-cairo.c
+    cairo-xcb-surface-core.c
+    cairo-xcb-surface-render.c
+)
+
+set(cairo_qt_headers cairo-qt.h)
+set(cairo_qt_cxx_sources cairo-qt-surface.cpp)
+
+set(cairo_quartz_headers cairo-quartz.h)
+set(cairo_quartz_private cairo-quartz-private.h)
+set(cairo_quartz_sources cairo-quartz-surface.c)
+
+set(cairo_quartz_image_headers cairo-quartz-image.h)
+set(cairo_quartz_image_sources cairo-quartz-image-surface.c)
+
+set(cairo_quartz_font_sources cairo-quartz-font.c)
+
+set(cairo_win32_headers cairo-win32.h)
+set(cairo_win32_private win32/cairo-win32-private.h)
+set(cairo_win32_sources 
+        win32/cairo-win32-debug.c
+        win32/cairo-win32-device.c
+        win32/cairo-win32-gdi-compositor.c
+        win32/cairo-win32-system.c
+        win32/cairo-win32-surface.c
+        win32/cairo-win32-display-surface.c
+        win32/cairo-win32-printing-surface.c
+)
+set(cairo_win32_font_sources win32/cairo-win32-font.c)
+
+set(cairo_skia_headers cairo-skia.h)
+set(cairo_skia_private skia/cairo-skia-private.h)
+set(cairo_skia_cxx_sources
+    skia/cairo-skia-context.cpp
+    skia/cairo-skia-surface.cpp
+)
+
+set(cairo_os2_headers cairo-os2.h)
+set(cairo_os2_private cairo-os2-private.h)
+set(cairo_os2_sources cairo-os2-surface.c)
+
+# automake is stupid enough to always use c++ linker if we enable the
+# following lines, even if beos surface is not enabled.  Disable it for now.
+set(cairo_beos_headers cairo-beos.h)
+set(cairo_beos_cxx_sources cairo-beos-surface.cpp)
+
+set(cairo_gl_headers cairo-gl.h)
+set(cairo_gl_private 
+        cairo-gl-private.h
+        cairo-gl-dispatch-private.h
+        cairo-gl-ext-def-private.h
+        cairo-gl-gradient-private.h
+)
+set(cairo_gl_sources 
+        cairo-gl-composite.c
+        cairo-gl-device.c
+        cairo-gl-dispatch.c
+        cairo-gl-glyphs.c
+        cairo-gl-gradient.c
+        cairo-gl-info.c
+        cairo-gl-operand.c
+        cairo-gl-shaders.c
+        cairo-gl-msaa-compositor.c
+        cairo-gl-spans-compositor.c
+        cairo-gl-traps-compositor.c
+        cairo-gl-source.c
+        cairo-gl-surface.c
+)
+set(cairo_glesv2_headers ${cairo_gl_headers})
+set(cairo_glesv2_private ${cairo_gl_private})
+set(cairo_glesv2_sources ${cairo_gl_sources})
+
+list(APPEND cairo_egl_sources cairo-egl-context.c)
+list(APPEND cairo_glx_sources cairo-glx-context.c)
+list(APPEND cairo_wgl_sources cairo-wgl-context.c)
+
+set(cairo_directfb_headers cairo-directfb.h)
+set(cairo_directfb_sources cairo-directfb-surface.c)
+
+set(cairo_drm_headers cairo-drm.h)
+set(cairo_drm_private 
+        drm/cairo-drm-private.h
+        drm/cairo-drm-ioctl-private.h
+        drm/cairo-drm-intel-private.h
+        drm/cairo-drm-intel-brw-defines.h
+        drm/cairo-drm-intel-brw-structs.h
+        drm/cairo-drm-intel-brw-eu.h
+        drm/cairo-drm-intel-command-private.h
+        drm/cairo-drm-intel-ioctl-private.h
+        drm/cairo-drm-i915-private.h
+        drm/cairo-drm-i965-private.h
+        drm/cairo-drm-radeon-private.h
+)
+
+set(cairo_drm_sources drm/cairo-drm.c
+            drm/cairo-drm-bo.c
+            drm/cairo-drm-surface.c
+            drm/cairo-drm-intel.c
+            drm/cairo-drm-intel-debug.c
+            drm/cairo-drm-intel-surface.c
+            drm/cairo-drm-i915-surface.c
+            drm/cairo-drm-i915-glyphs.c
+            drm/cairo-drm-i915-shader.c
+            drm/cairo-drm-i915-spans.c
+            drm/cairo-drm-i965-surface.c
+            drm/cairo-drm-i965-glyphs.c
+            drm/cairo-drm-i965-shader.c
+            drm/cairo-drm-i965-spans.c
+            drm/cairo-drm-intel-brw-eu.c
+            drm/cairo-drm-intel-brw-eu-emit.c
+            drm/cairo-drm-intel-brw-eu-util.c
+            drm/cairo-drm-radeon.c
+            drm/cairo-drm-radeon-surface.c
+)
+set(cairo_gallium_sources drm/cairo-drm-gallium-surface.c)
+
+set(cairo_script_headers cairo-script.h)
+set(cairo_script_private cairo-script-private.h)
+set(cairo_script_sources cairo-script-surface.c)
+
+set(cairo_tee_headers cairo-tee.h)
+set(cairo_tee_private cairo-tee-surface-private.h)
+set(cairo_tee_sources cairo-tee-surface.c)
+
+set(cairo_xml_headers cairo-xml.h)
+set(cairo_xml_sources cairo-xml-surface.c)
+
+set(cairo_vg_headers cairo-vg.h)
+set(cairo_vg_sources cairo-vg-surface.c)
+
+set(cairo_cogl_headers cairo-cogl.h)
+set(cairo_cogl_private 
+        cairo-cogl-private.h
+        cairo-cogl-gradient-private.h
+        cairo-cogl-context-private.h
+        cairo-cogl-utils-private.h
+)
+set(cairo_cogl_sources 
+        cairo-cogl-surface.c
+        cairo-cogl-gradient.c
+        cairo-cogl-context.c
+        cairo-cogl-utils.c
+)
diff --git a/libs/cairo-1.16.0/src/test-base-compositor-surface.c b/libs/cairo-1.16.0/src/test-base-compositor-surface.c
new file mode 100644
index 0000000..ff84b10
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-base-compositor-surface.c
@@ -0,0 +1,824 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2002 University of Southern California
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "test-compositor-surface-private.h"
+
+#include "cairo-clip-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-region-private.h"
+#include "cairo-traps-private.h"
+
+/* The intention is that this is a surface that just works, and most
+ * important of all does not try to be clever!
+ */
+
+typedef cairo_int_status_t
+(*draw_func_t) (cairo_image_surface_t		*dst,
+		void				*closure,
+		cairo_operator_t		 op,
+		const cairo_pattern_t		*pattern,
+		int				 dst_x,
+		int				 dst_y,
+		const cairo_rectangle_int_t	*extents);
+
+static pixman_op_t
+_pixman_operator (cairo_operator_t op)
+{
+    switch ((int) op) {
+    case CAIRO_OPERATOR_CLEAR:
+	return PIXMAN_OP_CLEAR;
+
+    case CAIRO_OPERATOR_SOURCE:
+	return PIXMAN_OP_SRC;
+    case CAIRO_OPERATOR_OVER:
+	return PIXMAN_OP_OVER;
+    case CAIRO_OPERATOR_IN:
+	return PIXMAN_OP_IN;
+    case CAIRO_OPERATOR_OUT:
+	return PIXMAN_OP_OUT;
+    case CAIRO_OPERATOR_ATOP:
+	return PIXMAN_OP_ATOP;
+
+    case CAIRO_OPERATOR_DEST:
+	return PIXMAN_OP_DST;
+    case CAIRO_OPERATOR_DEST_OVER:
+	return PIXMAN_OP_OVER_REVERSE;
+    case CAIRO_OPERATOR_DEST_IN:
+	return PIXMAN_OP_IN_REVERSE;
+    case CAIRO_OPERATOR_DEST_OUT:
+	return PIXMAN_OP_OUT_REVERSE;
+    case CAIRO_OPERATOR_DEST_ATOP:
+	return PIXMAN_OP_ATOP_REVERSE;
+
+    case CAIRO_OPERATOR_XOR:
+	return PIXMAN_OP_XOR;
+    case CAIRO_OPERATOR_ADD:
+	return PIXMAN_OP_ADD;
+    case CAIRO_OPERATOR_SATURATE:
+	return PIXMAN_OP_SATURATE;
+
+    case CAIRO_OPERATOR_MULTIPLY:
+	return PIXMAN_OP_MULTIPLY;
+    case CAIRO_OPERATOR_SCREEN:
+	return PIXMAN_OP_SCREEN;
+    case CAIRO_OPERATOR_OVERLAY:
+	return PIXMAN_OP_OVERLAY;
+    case CAIRO_OPERATOR_DARKEN:
+	return PIXMAN_OP_DARKEN;
+    case CAIRO_OPERATOR_LIGHTEN:
+	return PIXMAN_OP_LIGHTEN;
+    case CAIRO_OPERATOR_COLOR_DODGE:
+	return PIXMAN_OP_COLOR_DODGE;
+    case CAIRO_OPERATOR_COLOR_BURN:
+	return PIXMAN_OP_COLOR_BURN;
+    case CAIRO_OPERATOR_HARD_LIGHT:
+	return PIXMAN_OP_HARD_LIGHT;
+    case CAIRO_OPERATOR_SOFT_LIGHT:
+	return PIXMAN_OP_SOFT_LIGHT;
+    case CAIRO_OPERATOR_DIFFERENCE:
+	return PIXMAN_OP_DIFFERENCE;
+    case CAIRO_OPERATOR_EXCLUSION:
+	return PIXMAN_OP_EXCLUSION;
+    case CAIRO_OPERATOR_HSL_HUE:
+	return PIXMAN_OP_HSL_HUE;
+    case CAIRO_OPERATOR_HSL_SATURATION:
+	return PIXMAN_OP_HSL_SATURATION;
+    case CAIRO_OPERATOR_HSL_COLOR:
+	return PIXMAN_OP_HSL_COLOR;
+    case CAIRO_OPERATOR_HSL_LUMINOSITY:
+	return PIXMAN_OP_HSL_LUMINOSITY;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return PIXMAN_OP_OVER;
+    }
+}
+
+static cairo_image_surface_t *
+create_composite_mask (cairo_image_surface_t	*dst,
+		       void			*draw_closure,
+		       draw_func_t		 draw_func,
+		       const cairo_composite_rectangles_t *extents)
+{
+    cairo_image_surface_t *surface;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    surface = (cairo_image_surface_t *)
+	_cairo_image_surface_create_with_pixman_format (NULL, PIXMAN_a8,
+							extents->bounded.width,
+							extents->bounded.height,
+							0);
+    if (unlikely (surface->base.status))
+	return surface;
+
+    status = draw_func (surface, draw_closure,
+			CAIRO_OPERATOR_ADD, &_cairo_pattern_white.base,
+			extents->bounded.x, extents->bounded.y,
+			&extents->bounded);
+    if (unlikely (status))
+	goto error;
+
+    status = _cairo_clip_combine_with_surface (extents->clip,
+					       &surface->base,
+					       extents->bounded.x,
+					       extents->bounded.y);
+    if (unlikely (status))
+	goto error;
+
+    return surface;
+
+error:
+    cairo_surface_destroy (&surface->base);
+    return (cairo_image_surface_t *)_cairo_surface_create_in_error (status);
+}
+
+/* Handles compositing with a clip surface when the operator allows
+ * us to combine the clip with the mask
+ */
+static cairo_status_t
+clip_and_composite_with_mask (const cairo_composite_rectangles_t*extents,
+			      draw_func_t		 draw_func,
+			      void			*draw_closure)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)extents->surface;
+    cairo_image_surface_t *mask;
+    pixman_image_t *src;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    int src_x, src_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    mask = create_composite_mask (dst, draw_closure, draw_func, extents);
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    src = _pixman_image_for_pattern (dst,
+				     &extents->source_pattern.base, FALSE,
+				     &extents->bounded,
+				     &extents->source_sample_area,
+				     &src_x, &src_y);
+    if (unlikely (src == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto error;
+    }
+
+    pixman_image_composite32 (_pixman_operator (extents->op),
+			      src, mask->pixman_image, dst->pixman_image,
+			      extents->bounded.x + src_x,
+			      extents->bounded.y + src_y,
+			      0, 0,
+			      extents->bounded.x,      extents->bounded.y,
+			      extents->bounded.width,  extents->bounded.height);
+
+    pixman_image_unref (src);
+error:
+    cairo_surface_destroy (&mask->base);
+    return status;
+}
+
+/* Handles compositing with a clip surface when we have to do the operation
+ * in two pieces and combine them together.
+ */
+static cairo_status_t
+clip_and_composite_combine (const cairo_composite_rectangles_t*extents,
+			    draw_func_t			 draw_func,
+			    void			*draw_closure)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)extents->surface;
+    cairo_image_surface_t *tmp, *clip;
+    int clip_x, clip_y;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    tmp = (cairo_image_surface_t *)
+	_cairo_image_surface_create_with_pixman_format (NULL,
+							dst->pixman_format,
+							extents->bounded.width,
+							extents->bounded.height,
+							0);
+    if (unlikely (tmp->base.status))
+	return tmp->base.status;
+
+    pixman_image_composite32 (PIXMAN_OP_SRC,
+			      dst->pixman_image, NULL, tmp->pixman_image,
+			      extents->bounded.x,      extents->bounded.y,
+			      0, 0,
+			      0, 0,
+			      extents->bounded.width,  extents->bounded.height);
+
+    status = draw_func (tmp, draw_closure,
+			extents->op, &extents->source_pattern.base,
+			extents->bounded.x, extents->bounded.y,
+			&extents->bounded);
+    if (unlikely (status))
+	goto error;
+
+    clip = (cairo_image_surface_t *)
+	_cairo_clip_get_surface (extents->clip, &dst->base, &clip_x, &clip_y);
+    if (unlikely (clip->base.status))
+	goto error;
+
+    pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+			      clip->pixman_image, NULL, dst->pixman_image,
+			      extents->bounded.x - clip_x, extents->bounded.y - clip_y,
+			      0,      0,
+			      extents->bounded.x, extents->bounded.y,
+			      extents->bounded.width, extents->bounded.height);
+    pixman_image_composite32 (PIXMAN_OP_ADD,
+			      tmp->pixman_image, clip->pixman_image, dst->pixman_image,
+			      0,  0,
+			      extents->bounded.x - clip_x, extents->bounded.y - clip_y,
+			      extents->bounded.x, extents->bounded.y,
+			      extents->bounded.width, extents->bounded.height);
+
+    cairo_surface_destroy (&clip->base);
+
+ error:
+    cairo_surface_destroy (&tmp->base);
+
+    return status;
+}
+
+/* Handles compositing for %CAIRO_OPERATOR_SOURCE, which is special; it's
+ * defined as (src IN mask IN clip) ADD (dst OUT (mask IN clip))
+ */
+static cairo_status_t
+clip_and_composite_source (const cairo_composite_rectangles_t	*extents,
+			   draw_func_t				 draw_func,
+			   void					*draw_closure)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)extents->surface;
+    cairo_image_surface_t *mask;
+    pixman_image_t *src;
+    int src_x, src_y;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    mask = create_composite_mask (dst, draw_closure, draw_func, extents);
+    if (unlikely (mask->base.status))
+	return mask->base.status;
+
+    pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+			      mask->pixman_image, NULL, dst->pixman_image,
+			      0,      0,
+			      0,      0,
+			      extents->bounded.x, extents->bounded.y,
+			      extents->bounded.width, extents->bounded.height);
+
+    src = _pixman_image_for_pattern (dst,
+				     &extents->source_pattern.base, FALSE,
+				     &extents->bounded,
+				     &extents->source_sample_area,
+				     &src_x, &src_y);
+    if (unlikely (src == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto error;
+    }
+
+    pixman_image_composite32 (PIXMAN_OP_ADD,
+			      src, mask->pixman_image, dst->pixman_image,
+			      extents->bounded.x + src_x,  extents->bounded.y + src_y,
+			      0, 0,
+			      extents->bounded.x, extents->bounded.y,
+			      extents->bounded.width, extents->bounded.height);
+
+    pixman_image_unref (src);
+
+error:
+    cairo_surface_destroy (&mask->base);
+    return status;
+}
+
+static cairo_status_t
+fixup_unbounded (const cairo_composite_rectangles_t *extents)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *)extents->surface;
+    pixman_image_t *mask;
+    int mask_x, mask_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if (! _cairo_clip_is_region (extents->clip)) {
+	cairo_image_surface_t *clip;
+
+	clip = (cairo_image_surface_t *)
+	    _cairo_clip_get_surface (extents->clip, &dst->base,
+				     &mask_x, &mask_y);
+	if (unlikely (clip->base.status))
+	    return clip->base.status;
+
+	mask = pixman_image_ref (clip->pixman_image);
+	cairo_surface_destroy (&clip->base);
+    } else {
+	mask_x = mask_y = 0;
+	mask = _pixman_image_for_color (CAIRO_COLOR_WHITE);
+	if (unlikely (mask == NULL))
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    /* top */
+    if (extents->bounded.y != extents->unbounded.y) {
+	int x = extents->unbounded.x;
+	int y = extents->unbounded.y;
+	int width = extents->unbounded.width;
+	int height = extents->bounded.y - y;
+
+	pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+				  mask, NULL, dst->pixman_image,
+				  x - mask_x, y - mask_y,
+				  0, 0,
+				  x, y,
+				  width, height);
+    }
+
+    /* left */
+    if (extents->bounded.x != extents->unbounded.x) {
+	int x = extents->unbounded.x;
+	int y = extents->bounded.y;
+	int width = extents->bounded.x - x;
+	int height = extents->bounded.height;
+
+	pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+				  mask, NULL, dst->pixman_image,
+				  x - mask_x, y - mask_y,
+				  0, 0,
+				  x, y,
+				  width, height);
+    }
+
+    /* right */
+    if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) {
+	int x = extents->bounded.x + extents->bounded.width;
+	int y = extents->bounded.y;
+	int width = extents->unbounded.x + extents->unbounded.width - x;
+	int height = extents->bounded.height;
+
+	pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+				  mask, NULL, dst->pixman_image,
+				  x - mask_x, y - mask_y,
+				  0, 0,
+				  x, y,
+				  width, height);
+    }
+
+    /* bottom */
+    if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) {
+	int x = extents->unbounded.x;
+	int y = extents->bounded.y + extents->bounded.height;
+	int width = extents->unbounded.width;
+	int height = extents->unbounded.y + extents->unbounded.height - y;
+
+	pixman_image_composite32 (PIXMAN_OP_OUT_REVERSE,
+				  mask, NULL, dst->pixman_image,
+				  x - mask_x, y - mask_y,
+				  0, 0,
+				  x, y,
+				  width, height);
+    }
+
+    pixman_image_unref (mask);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+set_clip_region (cairo_composite_rectangles_t *extents)
+{
+    cairo_image_surface_t *dst = (cairo_image_surface_t *) extents->surface;
+    cairo_region_t *region = _cairo_clip_get_region (extents->clip);
+    pixman_region32_t *rgn = region ? &region->rgn : NULL;
+    if (! pixman_image_set_clip_region32 (dst->pixman_image, rgn))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+clip_and_composite (cairo_composite_rectangles_t *extents,
+		    draw_func_t		 draw_func,
+		    void		*draw_closure)
+{
+    cairo_status_t status;
+
+    status = set_clip_region (extents);
+    if (unlikely (status))
+	return status;
+
+    if (extents->op == CAIRO_OPERATOR_SOURCE) {
+	status = clip_and_composite_source (extents, draw_func, draw_closure);
+    } else {
+	if (extents->op == CAIRO_OPERATOR_CLEAR) {
+	    extents->source_pattern.solid = _cairo_pattern_white;
+	    extents->op = CAIRO_OPERATOR_DEST_OUT;
+	}
+	if (! _cairo_clip_is_region (extents->clip)) {
+	    if (extents->is_bounded)
+		status = clip_and_composite_with_mask (extents, draw_func, draw_closure);
+	    else
+		status = clip_and_composite_combine (extents, draw_func, draw_closure);
+	} else {
+	    status = draw_func ((cairo_image_surface_t *) extents->surface,
+				draw_closure,
+				extents->op,
+				&extents->source_pattern.base,
+				0, 0,
+				&extents->bounded);
+	}
+    }
+
+    if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded)
+	status = fixup_unbounded (extents);
+
+    return status;
+}
+
+/* high-level compositor interface */
+
+static cairo_int_status_t
+composite_paint (cairo_image_surface_t		*dst,
+		 void				*closure,
+		 cairo_operator_t		 op,
+		 const cairo_pattern_t		*pattern,
+		 int				 dst_x,
+		 int				 dst_y,
+		 const cairo_rectangle_int_t	*extents)
+{
+    cairo_rectangle_int_t sample;
+    pixman_image_t *src;
+    int src_x, src_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    _cairo_pattern_sampled_area (pattern, extents, &sample);
+    src = _pixman_image_for_pattern (dst,
+				     pattern, FALSE,
+				     extents, &sample,
+				     &src_x, &src_y);
+    if (unlikely (src == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    TRACE ((stderr, "%s: src=(%d, %d), dst=(%d, %d) size=%dx%d\n", __FUNCTION__,
+	    extents->x + src_x, extents->y + src_y,
+	    extents->x - dst_x, extents->y - dst_y,
+	    extents->width, extents->height));
+
+    pixman_image_composite32 (_pixman_operator (op),
+			      src, NULL, dst->pixman_image,
+			      extents->x + src_x, extents->y + src_y,
+			      0, 0,
+			      extents->x - dst_x, extents->y - dst_y,
+			      extents->width, extents->height);
+
+    pixman_image_unref (src);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+base_compositor_paint (const cairo_compositor_t *_compositor,
+		       cairo_composite_rectangles_t *extents)
+{
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return clip_and_composite (extents, composite_paint, NULL);
+}
+
+static cairo_int_status_t
+composite_mask (cairo_image_surface_t		*dst,
+		void				*closure,
+		cairo_operator_t		 op,
+		const cairo_pattern_t		*pattern,
+		int				 dst_x,
+		int				 dst_y,
+		const cairo_rectangle_int_t	 *extents)
+{
+    cairo_rectangle_int_t sample;
+    pixman_image_t *src, *mask;
+    int src_x, src_y;
+    int mask_x, mask_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    _cairo_pattern_sampled_area (pattern, extents, &sample);
+    src = _pixman_image_for_pattern (dst, pattern, FALSE,
+				     extents, &sample,
+				     &src_x, &src_y);
+    if (unlikely (src == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    _cairo_pattern_sampled_area (closure, extents, &sample);
+    mask = _pixman_image_for_pattern (dst, closure, TRUE,
+				      extents, &sample,
+				      &mask_x, &mask_y);
+    if (unlikely (mask == NULL)) {
+	pixman_image_unref (src);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    pixman_image_composite32 (_pixman_operator (op),
+			      src, mask, dst->pixman_image,
+			      extents->x + src_x, extents->y + src_y,
+			      extents->x + mask_x, extents->y + mask_y,
+			      extents->x - dst_x, extents->y - dst_y,
+			      extents->width, extents->height);
+
+    pixman_image_unref (mask);
+    pixman_image_unref (src);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+base_compositor_mask (const cairo_compositor_t *_compositor,
+		      cairo_composite_rectangles_t *extents)
+{
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return clip_and_composite (extents, composite_mask, &extents->mask_pattern.base);
+}
+
+typedef struct {
+    cairo_traps_t traps;
+    cairo_antialias_t antialias;
+} composite_traps_info_t;
+
+static cairo_int_status_t
+composite_traps (cairo_image_surface_t	*dst,
+		 void			*closure,
+		 cairo_operator_t	 op,
+		 const cairo_pattern_t	*pattern,
+		 int			 dst_x,
+		 int			 dst_y,
+		 const cairo_rectangle_int_t *extents)
+{
+    composite_traps_info_t *info = closure;
+    cairo_rectangle_int_t sample;
+    pixman_image_t *src, *mask;
+    int src_x, src_y;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    _cairo_pattern_sampled_area (pattern, extents, &sample);
+    src = _pixman_image_for_pattern (dst, pattern, FALSE,
+				     extents, &sample,
+				     &src_x, &src_y);
+    if (unlikely (src == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    mask = pixman_image_create_bits (info->antialias == CAIRO_ANTIALIAS_NONE ? PIXMAN_a1 : PIXMAN_a8,
+				     extents->width, extents->height,
+				     NULL, 0);
+    if (unlikely (mask == NULL)) {
+	pixman_image_unref (src);
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+
+    _pixman_image_add_traps (mask, extents->x, extents->y, &info->traps);
+    pixman_image_composite32 (_pixman_operator (op),
+                              src, mask, dst->pixman_image,
+                              extents->x + src_x - dst_x, extents->y + src_y - dst_y,
+                              0, 0,
+                              extents->x - dst_x, extents->y - dst_y,
+                              extents->width, extents->height);
+
+    pixman_image_unref (mask);
+    pixman_image_unref (src);
+
+    return  CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+trim_extents_to_traps (cairo_composite_rectangles_t *extents,
+		       cairo_traps_t *traps)
+{
+    cairo_box_t box;
+
+    /* X trims the affected area to the extents of the trapezoids, so
+     * we need to compensate when fixing up the unbounded area.
+    */
+    _cairo_traps_extents (traps, &box);
+    return _cairo_composite_rectangles_intersect_mask_extents (extents, &box);
+}
+
+static cairo_int_status_t
+base_compositor_stroke (const cairo_compositor_t *_compositor,
+			cairo_composite_rectangles_t *extents,
+			const cairo_path_fixed_t *path,
+			const cairo_stroke_style_t *style,
+			const cairo_matrix_t	*ctm,
+			const cairo_matrix_t	*ctm_inverse,
+			double			 tolerance,
+			cairo_antialias_t	 antialias)
+{
+    composite_traps_info_t info;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    info.antialias = antialias;
+    _cairo_traps_init_with_clip (&info.traps, extents->clip);
+    status = _cairo_path_fixed_stroke_polygon_to_traps (path, style,
+							ctm, ctm_inverse,
+							tolerance,
+							&info.traps);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = trim_extents_to_traps (extents, &info.traps);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = clip_and_composite (extents, composite_traps, &info);
+    _cairo_traps_fini (&info.traps);
+
+    return status;
+}
+
+static cairo_int_status_t
+base_compositor_fill (const cairo_compositor_t *_compositor,
+		      cairo_composite_rectangles_t *extents,
+		      const cairo_path_fixed_t	*path,
+		      cairo_fill_rule_t		 fill_rule,
+		      double			 tolerance,
+		      cairo_antialias_t		 antialias)
+{
+    composite_traps_info_t info;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    info.antialias = antialias;
+    _cairo_traps_init_with_clip (&info.traps, extents->clip);
+    status = _cairo_path_fixed_fill_to_traps (path,
+					      fill_rule, tolerance,
+					      &info.traps);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = trim_extents_to_traps (extents, &info.traps);
+    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	status = clip_and_composite (extents, composite_traps, &info);
+    _cairo_traps_fini (&info.traps);
+
+    return status;
+}
+
+static cairo_int_status_t
+composite_glyphs (cairo_image_surface_t	*dst,
+		  void			 *closure,
+		  cairo_operator_t	 op,
+		  const cairo_pattern_t	*pattern,
+		  int			 dst_x,
+		  int			 dst_y,
+		  const cairo_rectangle_int_t *extents)
+{
+    cairo_composite_glyphs_info_t *info = closure;
+    pixman_image_t *mask;
+    cairo_status_t status;
+    int i;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    mask = pixman_image_create_bits (PIXMAN_a8,
+				     extents->width, extents->height,
+				     NULL, 0);
+    if (unlikely (mask == NULL))
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    status = CAIRO_STATUS_SUCCESS;
+    _cairo_scaled_font_freeze_cache (info->font);
+    for (i = 0; i < info->num_glyphs; i++) {
+	cairo_image_surface_t *glyph_surface;
+	cairo_scaled_glyph_t *scaled_glyph;
+	unsigned long glyph_index = info->glyphs[i].index;
+	int x, y;
+
+	status = _cairo_scaled_glyph_lookup (info->font, glyph_index,
+					     CAIRO_SCALED_GLYPH_INFO_SURFACE,
+					     &scaled_glyph);
+
+	if (unlikely (status))
+	    break;
+
+	glyph_surface = scaled_glyph->surface;
+	if (glyph_surface->width && glyph_surface->height) {
+	    /* round glyph locations to the nearest pixel */
+	    /* XXX: FRAGILE: We're ignoring device_transform scaling here. A bug? */
+	    x = _cairo_lround (info->glyphs[i].x -
+			       glyph_surface->base.device_transform.x0);
+	    y = _cairo_lround (info->glyphs[i].y -
+			       glyph_surface->base.device_transform.y0);
+
+	    pixman_image_composite32 (PIXMAN_OP_ADD,
+				      glyph_surface->pixman_image, NULL, mask,
+				      0, 0,
+                                      0, 0,
+                                      x - extents->x, y - extents->y,
+				      glyph_surface->width,
+				      glyph_surface->height);
+	}
+    }
+    _cairo_scaled_font_thaw_cache (info->font);
+
+    if (status == CAIRO_STATUS_SUCCESS) {
+	cairo_rectangle_int_t sample;
+	pixman_image_t *src;
+	int src_x, src_y;
+
+	_cairo_pattern_sampled_area (pattern, extents, &sample);
+	src = _pixman_image_for_pattern (dst, pattern, FALSE,
+					 extents, &sample,
+					 &src_x, &src_y);
+	if (src != NULL) {
+	    dst_x = extents->x - dst_x;
+	    dst_y = extents->y - dst_y;
+	    pixman_image_composite32 (_pixman_operator (op),
+				      src, mask, dst->pixman_image,
+				      src_x + dst_x,  src_y + dst_y,
+				      0, 0,
+				      dst_x, dst_y,
+				      extents->width, extents->height);
+	    pixman_image_unref (src);
+	} else
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    }
+    pixman_image_unref (mask);
+
+    return status;
+}
+
+static cairo_int_status_t
+base_compositor_glyphs (const cairo_compositor_t	*_compositor,
+			cairo_composite_rectangles_t	*extents,
+			cairo_scaled_font_t		*scaled_font,
+			cairo_glyph_t			*glyphs,
+			int				 num_glyphs,
+			cairo_bool_t			 overlap)
+{
+    cairo_composite_glyphs_info_t info;
+
+    info.font = scaled_font;
+    info.glyphs = glyphs;
+    info.num_glyphs = num_glyphs;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return clip_and_composite (extents, composite_glyphs, &info);
+}
+
+static const cairo_compositor_t base_compositor = {
+    &__cairo_no_compositor,
+
+    base_compositor_paint,
+    base_compositor_mask,
+    base_compositor_stroke,
+    base_compositor_fill,
+    base_compositor_glyphs,
+};
+
+cairo_surface_t *
+_cairo_test_base_compositor_surface_create (cairo_content_t	content,
+					    int		width,
+					    int		height)
+{
+    return test_compositor_surface_create (&base_compositor,
+					   content, width, height);
+}
diff --git a/libs/cairo-1.16.0/src/test-compositor-surface-private.h b/libs/cairo-1.16.0/src/test-compositor-surface-private.h
new file mode 100644
index 0000000..491f241
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-compositor-surface-private.h
@@ -0,0 +1,56 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef TEST_COMPOSITOR_SURFACE_PRIVATE_H
+#define TEST_COMPOSITOR_SURFACE_PRIVATE_H
+
+#include "cairo.h"
+
+#include "test-compositor-surface.h"
+
+#include "cairo-compiler-private.h"
+#include "cairo-compositor-private.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_private cairo_surface_t *
+test_compositor_surface_create (const cairo_compositor_t *compositor,
+				cairo_content_t	content,
+				int		width,
+				int		height);
+
+CAIRO_END_DECLS
+
+#endif /* TEST_COMPOSITOR_SURFACE_PRIVATE H */
diff --git a/libs/cairo-1.16.0/src/test-compositor-surface.c b/libs/cairo-1.16.0/src/test-compositor-surface.c
new file mode 100644
index 0000000..d6e04a1
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-compositor-surface.c
@@ -0,0 +1,265 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairoint.h"
+
+#include "test-compositor-surface-private.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-backend-private.h"
+
+typedef struct _test_compositor_surface {
+    cairo_image_surface_t base;
+} test_compositor_surface_t;
+
+static const cairo_surface_backend_t test_compositor_surface_backend;
+
+cairo_surface_t *
+test_compositor_surface_create (const cairo_compositor_t *compositor,
+				cairo_content_t	content,
+				int		width,
+				int		height)
+{
+    test_compositor_surface_t *surface;
+    pixman_image_t *pixman_image;
+    pixman_format_code_t pixman_format;
+
+    switch (content) {
+    case CAIRO_CONTENT_ALPHA:
+	pixman_format = PIXMAN_a8;
+	break;
+    case CAIRO_CONTENT_COLOR:
+	pixman_format = PIXMAN_x8r8g8b8;
+	break;
+    case CAIRO_CONTENT_COLOR_ALPHA:
+	pixman_format = PIXMAN_a8r8g8b8;
+	break;
+    default:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
+    }
+
+    pixman_image = pixman_image_create_bits (pixman_format, width, height,
+					     NULL, 0);
+    if (unlikely (pixman_image == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface = _cairo_malloc (sizeof (test_compositor_surface_t));
+    if (unlikely (surface == NULL)) {
+	pixman_image_unref (pixman_image);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    _cairo_surface_init (&surface->base.base,
+			 &test_compositor_surface_backend,
+			 NULL, /* device */
+			 content,
+			 FALSE); /* is_vector */
+    _cairo_image_surface_init (&surface->base, pixman_image, pixman_format);
+
+    surface->base.compositor = compositor;
+
+    return &surface->base.base;
+}
+
+static cairo_surface_t *
+test_compositor_surface_create_similar (void		*abstract_surface,
+					cairo_content_t	 content,
+					int		 width,
+					int		 height)
+{
+    test_compositor_surface_t *surface = abstract_surface;
+
+    return test_compositor_surface_create (surface->base.compositor,
+					   content, width, height);
+}
+
+static cairo_int_status_t
+test_compositor_surface_paint (void			*_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_paint (surface->base.compositor,
+				    _surface, op, source,
+				    clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_mask (void			*_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_mask (surface->base.compositor,
+				   _surface, op, source, mask,
+				    clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_stroke (void				*_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t		*source,
+				const cairo_path_fixed_t	*path,
+				const cairo_stroke_style_t	*style,
+				const cairo_matrix_t		*ctm,
+				const cairo_matrix_t		*ctm_inverse,
+				double				 tolerance,
+				cairo_antialias_t		 antialias,
+				const cairo_clip_t		*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    if (antialias == CAIRO_ANTIALIAS_DEFAULT)
+	antialias = CAIRO_ANTIALIAS_BEST;
+    return _cairo_compositor_stroke (surface->base.compositor,
+				     _surface, op, source,
+				     path, style, ctm, ctm_inverse,
+				     tolerance, antialias,
+				     clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_fill (void			*_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		 fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias,
+			      const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    if (antialias == CAIRO_ANTIALIAS_DEFAULT)
+	antialias = CAIRO_ANTIALIAS_BEST;
+    return _cairo_compositor_fill (surface->base.compositor,
+				   _surface, op, source,
+				   path, fill_rule, tolerance, antialias,
+				   clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_glyphs (void			*_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_glyphs (surface->base.compositor,
+				     _surface, op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
+
+static const cairo_surface_backend_t test_compositor_surface_backend = {
+    CAIRO_SURFACE_TYPE_IMAGE,
+    _cairo_image_surface_finish,
+    _cairo_default_context_create,
+
+    test_compositor_surface_create_similar,
+    NULL, /* create similar image */
+    _cairo_image_surface_map_to_image,
+    _cairo_image_surface_unmap_image,
+
+    _cairo_image_surface_source,
+    _cairo_image_surface_acquire_source_image,
+    _cairo_image_surface_release_source_image,
+    _cairo_image_surface_snapshot,
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_image_surface_get_extents,
+    _cairo_image_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    test_compositor_surface_paint,
+    test_compositor_surface_mask,
+    test_compositor_surface_stroke,
+    test_compositor_surface_fill,
+    NULL, /* fill/stroke */
+    test_compositor_surface_glyphs,
+};
+
+static const cairo_compositor_t *
+get_fallback_compositor (void)
+{
+    return &_cairo_fallback_compositor;
+}
+
+cairo_surface_t *
+_cairo_test_fallback_compositor_surface_create (cairo_content_t	content,
+						int		width,
+						int		height)
+{
+    return test_compositor_surface_create (get_fallback_compositor(),
+					   content, width, height);
+}
+
+cairo_surface_t *
+_cairo_test_mask_compositor_surface_create (cairo_content_t	content,
+						int		width,
+						int		height)
+{
+    return test_compositor_surface_create (_cairo_image_mask_compositor_get(),
+					   content, width, height);
+}
+
+cairo_surface_t *
+_cairo_test_traps_compositor_surface_create (cairo_content_t	content,
+					     int		width,
+					     int		height)
+{
+    return test_compositor_surface_create (_cairo_image_traps_compositor_get(),
+					   content, width, height);
+}
+
+cairo_surface_t *
+_cairo_test_spans_compositor_surface_create (cairo_content_t	content,
+					     int		width,
+					     int		height)
+{
+    return test_compositor_surface_create (_cairo_image_spans_compositor_get(),
+					   content, width, height);
+}
diff --git a/libs/cairo-1.16.0/src/test-compositor-surface.h b/libs/cairo-1.16.0/src/test-compositor-surface.h
new file mode 100644
index 0000000..8d8af2d
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-compositor-surface.h
@@ -0,0 +1,71 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef TEST_COMPOSITOR_SURFACE_H
+#define TEST_COMPOSITOR_SURFACE_H
+
+#include "cairo.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_surface_t *
+_cairo_test_fallback_compositor_surface_create (cairo_content_t	content,
+						int		width,
+						int		height);
+
+
+cairo_surface_t *
+_cairo_test_mask_compositor_surface_create (cairo_content_t	content,
+					     int		width,
+					     int		height);
+
+cairo_surface_t *
+_cairo_test_traps_compositor_surface_create (cairo_content_t	content,
+					     int		width,
+					     int		height);
+
+cairo_surface_t *
+_cairo_test_spans_compositor_surface_create (cairo_content_t	content,
+					     int		width,
+					     int		height);
+
+cairo_surface_t *
+_cairo_test_base_compositor_surface_create (cairo_content_t	content,
+					    int			width,
+					    int			height);
+
+CAIRO_END_DECLS
+
+#endif /* TEST_COMPOSITOR_SURFACE_H */
diff --git a/libs/cairo-1.16.0/src/test-null-compositor-surface.c b/libs/cairo-1.16.0/src/test-null-compositor-surface.c
new file mode 100644
index 0000000..35913a2
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-null-compositor-surface.c
@@ -0,0 +1,487 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+
+#include "cairoint.h"
+
+#include "test-null-compositor-surface.h"
+
+#include "cairo-compositor-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-spans-compositor-private.h"
+#include "cairo-spans-private.h"
+
+typedef struct _test_compositor_surface {
+    cairo_image_surface_t base;
+} test_compositor_surface_t;
+
+static const cairo_surface_backend_t test_compositor_surface_backend;
+
+static cairo_surface_t *
+test_compositor_surface_create (const cairo_compositor_t *compositor,
+				cairo_content_t	content,
+				int		width,
+				int		height)
+{
+    test_compositor_surface_t *surface;
+    pixman_image_t *pixman_image;
+    pixman_format_code_t pixman_format;
+
+    switch (content) {
+    case CAIRO_CONTENT_ALPHA:
+	pixman_format = PIXMAN_a8;
+	break;
+    case CAIRO_CONTENT_COLOR:
+	pixman_format = PIXMAN_x8r8g8b8;
+	break;
+    case CAIRO_CONTENT_COLOR_ALPHA:
+	pixman_format = PIXMAN_a8r8g8b8;
+	break;
+    default:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
+    }
+
+    pixman_image = pixman_image_create_bits (pixman_format, width, height,
+					     NULL, 0);
+    if (unlikely (pixman_image == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface = _cairo_malloc (sizeof (test_compositor_surface_t));
+    if (unlikely (surface == NULL)) {
+	pixman_image_unref (pixman_image);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    _cairo_surface_init (&surface->base.base,
+			 &test_compositor_surface_backend,
+			 NULL, /* device */
+			 content,
+			 FALSE); /* is_vector */
+    _cairo_image_surface_init (&surface->base, pixman_image, pixman_format);
+
+    surface->base.compositor = compositor;
+
+    return &surface->base.base;
+}
+
+static cairo_surface_t *
+test_compositor_surface_create_similar (void		*abstract_surface,
+					cairo_content_t	 content,
+					int		 width,
+					int		 height)
+{
+    test_compositor_surface_t *surface = abstract_surface;
+
+    return test_compositor_surface_create (surface->base.compositor,
+					   content, width, height);
+}
+
+static cairo_int_status_t
+test_compositor_surface_paint (void			*_surface,
+			       cairo_operator_t		 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_paint (surface->base.compositor,
+				    _surface, op, source,
+				    clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_mask (void			*_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_mask (surface->base.compositor,
+				   _surface, op, source, mask,
+				    clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_stroke (void				*_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t		*source,
+				const cairo_path_fixed_t	*path,
+				const cairo_stroke_style_t	*style,
+				const cairo_matrix_t		*ctm,
+				const cairo_matrix_t		*ctm_inverse,
+				double				 tolerance,
+				cairo_antialias_t		 antialias,
+				const cairo_clip_t		*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_stroke (surface->base.compositor,
+				     _surface, op, source,
+				     path, style, ctm, ctm_inverse,
+				     tolerance, antialias,
+				     clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_fill (void			*_surface,
+			      cairo_operator_t		 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_path_fixed_t	*path,
+			      cairo_fill_rule_t		 fill_rule,
+			      double			 tolerance,
+			      cairo_antialias_t		 antialias,
+			      const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_fill (surface->base.compositor,
+				   _surface, op, source,
+				   path, fill_rule, tolerance, antialias,
+				   clip);
+}
+
+static cairo_int_status_t
+test_compositor_surface_glyphs (void			*_surface,
+				cairo_operator_t	 op,
+				const cairo_pattern_t	*source,
+				cairo_glyph_t		*glyphs,
+				int			 num_glyphs,
+				cairo_scaled_font_t	*scaled_font,
+				const cairo_clip_t	*clip)
+{
+    test_compositor_surface_t *surface = _surface;
+    return _cairo_compositor_glyphs (surface->base.compositor,
+				     _surface, op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
+
+static const cairo_surface_backend_t test_compositor_surface_backend = {
+    CAIRO_SURFACE_TYPE_IMAGE,
+    _cairo_image_surface_finish,
+    _cairo_default_context_create,
+
+    test_compositor_surface_create_similar,
+    NULL, /* create similar image */
+    _cairo_image_surface_map_to_image,
+    _cairo_image_surface_unmap_image,
+
+    _cairo_image_surface_source,
+    _cairo_image_surface_acquire_source_image,
+    _cairo_image_surface_release_source_image,
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_image_surface_get_extents,
+    _cairo_image_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    test_compositor_surface_paint,
+    test_compositor_surface_mask,
+    test_compositor_surface_stroke,
+    test_compositor_surface_fill,
+    NULL, /* fill/stroke */
+    test_compositor_surface_glyphs,
+};
+
+static cairo_int_status_t
+acquire (void *abstract_dst)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+release (void *abstract_dst)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+set_clip_region (void *_surface,
+		 cairo_region_t *region)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+pattern_to_surface (cairo_surface_t *dst,
+		    const cairo_pattern_t *pattern,
+		    cairo_bool_t is_mask,
+		    const cairo_rectangle_int_t *extents,
+		    const cairo_rectangle_int_t *sample,
+		    int *src_x, int *src_y)
+{
+    return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
+}
+
+static cairo_int_status_t
+fill_boxes (void		*_dst,
+	    cairo_operator_t	 op,
+	    const cairo_color_t	*color,
+	    cairo_boxes_t	*boxes)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+draw_image_boxes (void *_dst,
+		  cairo_image_surface_t *image,
+		  cairo_boxes_t *boxes,
+		  int dx, int dy)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite (void			*_dst,
+	   cairo_operator_t	op,
+	   cairo_surface_t	*abstract_src,
+	   cairo_surface_t	*abstract_mask,
+	   int			src_x,
+	   int			src_y,
+	   int			mask_x,
+	   int			mask_y,
+	   int			dst_x,
+	   int			dst_y,
+	   unsigned int		width,
+	   unsigned int		height)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+lerp (void			*_dst,
+      cairo_surface_t		*abstract_src,
+      cairo_surface_t		*abstract_mask,
+      int			src_x,
+      int			src_y,
+      int			mask_x,
+      int			mask_y,
+      int			dst_x,
+      int			dst_y,
+      unsigned int		width,
+      unsigned int		height)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_boxes (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 cairo_surface_t	*abstract_mask,
+		 int			src_x,
+		 int			src_y,
+		 int			mask_x,
+		 int			mask_y,
+		 int			dst_x,
+		 int			dst_y,
+		 cairo_boxes_t		*boxes,
+		 const cairo_rectangle_int_t  *extents)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_traps (void			*_dst,
+		 cairo_operator_t	op,
+		 cairo_surface_t	*abstract_src,
+		 int			src_x,
+		 int			src_y,
+		 int			dst_x,
+		 int			dst_y,
+		 const cairo_rectangle_int_t *extents,
+		 cairo_antialias_t	antialias,
+		 cairo_traps_t		*traps)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+check_composite_glyphs (const cairo_composite_rectangles_t *extents,
+			cairo_scaled_font_t *scaled_font,
+			cairo_glyph_t *glyphs,
+			int *num_glyphs)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+composite_glyphs (void				*_dst,
+		  cairo_operator_t		 op,
+		  cairo_surface_t		*_src,
+		  int				 src_x,
+		  int				 src_y,
+		  int				 dst_x,
+		  int				 dst_y,
+		  cairo_composite_glyphs_info_t *info)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+spans (void *abstract_renderer,
+       int y, int height,
+       const cairo_half_open_span_t *spans,
+       unsigned num_spans)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+finish_spans (void *abstract_renderer)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+span_renderer_init (cairo_abstract_span_renderer_t	*_r,
+		    const cairo_composite_rectangles_t *composite,
+		    cairo_antialias_t			antialias,
+		    cairo_bool_t			needs_clip)
+{
+    cairo_span_renderer_t *r = (cairo_span_renderer_t *)_r;
+    r->render_rows = spans;
+    r->finish = finish_spans;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+span_renderer_fini (cairo_abstract_span_renderer_t *_r,
+		    cairo_int_status_t status)
+{
+}
+
+static const cairo_compositor_t *
+no_fallback_compositor_get (void)
+{
+    return &__cairo_no_compositor;
+}
+
+static cairo_int_status_t
+check_composite (const cairo_composite_rectangles_t *extents)
+{
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_compositor_t *
+no_traps_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_traps_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_traps_compositor_init (&compositor,
+				      no_fallback_compositor_get ());
+
+	compositor.acquire = acquire;
+	compositor.release = release;
+	compositor.set_clip_region = set_clip_region;
+	compositor.pattern_to_surface = pattern_to_surface;
+	compositor.draw_image_boxes = draw_image_boxes;
+	//compositor.copy_boxes = copy_boxes;
+	compositor.fill_boxes = fill_boxes;
+	compositor.check_composite = check_composite;
+	compositor.composite = composite;
+	compositor.lerp = lerp;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	//compositor.check_composite_traps = check_composite_traps;
+	compositor.composite_traps = composite_traps;
+	compositor.check_composite_glyphs = check_composite_glyphs;
+	compositor.composite_glyphs = composite_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
+
+static const cairo_compositor_t *
+no_spans_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_spans_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	_cairo_spans_compositor_init (&compositor,
+				      no_traps_compositor_get());
+
+	//compositor.acquire = acquire;
+	//compositor.release = release;
+	compositor.fill_boxes = fill_boxes;
+	//compositor.check_composite_boxes = check_composite_boxes;
+	compositor.composite_boxes = composite_boxes;
+	//compositor.check_span_renderer = check_span_renderer;
+	compositor.renderer_init = span_renderer_init;
+	compositor.renderer_fini = span_renderer_fini;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor.base;
+}
+
+cairo_surface_t *
+_cairo_test_no_fallback_compositor_surface_create (cairo_content_t	content,
+						   int		width,
+						   int		height)
+{
+    return test_compositor_surface_create (no_fallback_compositor_get(),
+					   content, width, height);
+}
+
+cairo_surface_t *
+_cairo_test_no_traps_compositor_surface_create (cairo_content_t	content,
+						int		width,
+						int		height)
+{
+    return test_compositor_surface_create (no_traps_compositor_get(),
+					   content, width, height);
+}
+
+cairo_surface_t *
+_cairo_test_no_spans_compositor_surface_create (cairo_content_t	content,
+					     int		width,
+					     int		height)
+{
+    return test_compositor_surface_create (no_spans_compositor_get(),
+					   content, width, height);
+}
diff --git a/libs/cairo-1.16.0/src/test-null-compositor-surface.h b/libs/cairo-1.16.0/src/test-null-compositor-surface.h
new file mode 100644
index 0000000..52d864b
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-null-compositor-surface.h
@@ -0,0 +1,60 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2011 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Intel Corporation
+ *
+ * Contributor(s):
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef TEST_NULL_COMPOSITOR_SURFACE_H
+#define TEST_NULL_COMPOSITOR_SURFACE_H
+
+#include "cairo.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_surface_t *
+_cairo_test_no_fallback_compositor_surface_create (cairo_content_t	content,
+						   int			width,
+						   int			height);
+
+cairo_surface_t *
+_cairo_test_no_traps_compositor_surface_create (cairo_content_t	content,
+						int		width,
+						int		height);
+
+cairo_surface_t *
+_cairo_test_no_spans_compositor_surface_create (cairo_content_t	content,
+						int		width,
+						int		height);
+
+CAIRO_END_DECLS
+
+#endif /* TEST_NULL_COMPOSITOR_SURFACE_H */
diff --git a/libs/cairo-1.16.0/src/test-paginated-surface.c b/libs/cairo-1.16.0/src/test-paginated-surface.c
new file mode 100644
index 0000000..7967f74
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-paginated-surface.c
@@ -0,0 +1,289 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+/* This isn't a "real" surface, but just something to be used by the
+ * test suite to help exercise the paginated-surface paths in cairo.
+ *
+ * The defining feature of this backend is that it uses a paginated
+ * surface to record all operations, and then replays everything to an
+ * image surface.
+ *
+ * It's possible that this code might serve as a good starting point
+ * for someone working on bringing up a new paginated-surface-based
+ * backend.
+ */
+
+#include "cairoint.h"
+
+#include "test-paginated-surface.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-surface-backend-private.h"
+
+typedef struct _test_paginated_surface {
+    cairo_surface_t base;
+    cairo_surface_t *target;
+    cairo_paginated_mode_t paginated_mode;
+} test_paginated_surface_t;
+
+static const cairo_surface_backend_t test_paginated_surface_backend;
+static const cairo_paginated_surface_backend_t test_paginated_surface_paginated_backend;
+
+cairo_surface_t *
+_cairo_test_paginated_surface_create (cairo_surface_t *target)
+{
+    cairo_status_t status;
+    cairo_surface_t *paginated;
+    test_paginated_surface_t *surface;
+
+    status = cairo_surface_status (target);
+    if (unlikely (status))
+	return _cairo_surface_create_in_error (status);
+
+    surface = _cairo_malloc (sizeof (test_paginated_surface_t));
+    if (unlikely (surface == NULL))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    _cairo_surface_init (&surface->base,
+			 &test_paginated_surface_backend,
+			 NULL, /* device */
+			 target->content,
+			 TRUE); /* is_vector */
+
+    surface->target = cairo_surface_reference (target);
+
+    paginated =  _cairo_paginated_surface_create (&surface->base,
+						  target->content,
+						  &test_paginated_surface_paginated_backend);
+    status = paginated->status;
+    if (status == CAIRO_STATUS_SUCCESS) {
+	/* paginated keeps the only reference to surface now, drop ours */
+	cairo_surface_destroy (&surface->base);
+	return paginated;
+    }
+
+    cairo_surface_destroy (target);
+    free (surface);
+    return _cairo_surface_create_in_error (status);
+}
+
+static cairo_status_t
+_test_paginated_surface_finish (void *abstract_surface)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    cairo_surface_destroy (surface->target);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_test_paginated_surface_get_extents (void			*abstract_surface,
+				     cairo_rectangle_int_t	*rectangle)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    return _cairo_surface_get_extents (surface->target, rectangle);
+}
+
+static cairo_int_status_t
+_test_paginated_surface_paint (void		*abstract_surface,
+			       cairo_operator_t	 op,
+			       const cairo_pattern_t	*source,
+			       const cairo_clip_t	*clip)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_surface_paint (surface->target, op, source, clip);
+}
+
+static cairo_int_status_t
+_test_paginated_surface_mask (void		*abstract_surface,
+			      cairo_operator_t	 op,
+			      const cairo_pattern_t	*source,
+			      const cairo_pattern_t	*mask,
+			      const cairo_clip_t	*clip)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_surface_mask (surface->target,
+				op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_test_paginated_surface_stroke (void				*abstract_surface,
+				cairo_operator_t		 op,
+				const cairo_pattern_t		*source,
+				const cairo_path_fixed_t		*path,
+				const cairo_stroke_style_t		*style,
+				const cairo_matrix_t			*ctm,
+				const cairo_matrix_t			*ctm_inverse,
+				double				 tolerance,
+				cairo_antialias_t		 antialias,
+				const cairo_clip_t		*clip)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_surface_stroke (surface->target, op, source,
+				  path, style,
+				  ctm, ctm_inverse,
+				  tolerance, antialias,
+				  clip);
+}
+
+static cairo_int_status_t
+_test_paginated_surface_fill (void				*abstract_surface,
+			      cairo_operator_t			 op,
+			      const cairo_pattern_t		*source,
+			      const cairo_path_fixed_t		*path,
+			      cairo_fill_rule_t			 fill_rule,
+			      double				 tolerance,
+			      cairo_antialias_t			 antialias,
+			      const cairo_clip_t		*clip)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_surface_fill (surface->target, op, source,
+				path, fill_rule,
+				tolerance, antialias,
+				clip);
+}
+
+static cairo_bool_t
+_test_paginated_surface_has_show_text_glyphs (void *abstract_surface)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    return cairo_surface_has_show_text_glyphs (surface->target);
+}
+
+static cairo_int_status_t
+_test_paginated_surface_show_text_glyphs (void			    *abstract_surface,
+					  cairo_operator_t	     op,
+					  const cairo_pattern_t	    *source,
+					  const char		    *utf8,
+					  int			     utf8_len,
+					  cairo_glyph_t		    *glyphs,
+					  int			     num_glyphs,
+					  const cairo_text_cluster_t *clusters,
+					  int			     num_clusters,
+					  cairo_text_cluster_flags_t cluster_flags,
+					  cairo_scaled_font_t	    *scaled_font,
+					  const cairo_clip_t	    *clip)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_STATUS_SUCCESS;
+
+    return _cairo_surface_show_text_glyphs (surface->target, op, source,
+					    utf8, utf8_len,
+					    glyphs, num_glyphs,
+					    clusters, num_clusters,
+					    cluster_flags,
+					    scaled_font,
+					    clip);
+}
+
+
+static cairo_int_status_t
+_test_paginated_surface_set_paginated_mode (void			*abstract_surface,
+					    cairo_paginated_mode_t	 mode)
+{
+    test_paginated_surface_t *surface = abstract_surface;
+
+    surface->paginated_mode = mode;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const cairo_surface_backend_t test_paginated_surface_backend = {
+    CAIRO_INTERNAL_SURFACE_TYPE_TEST_PAGINATED,
+    _test_paginated_surface_finish,
+    _cairo_default_context_create,
+
+    /* Since we are a paginated user, we get to regard most of the
+     * surface backend interface as historical cruft and ignore it. */
+
+    NULL, /* create_similar */
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _test_paginated_surface_get_extents,
+    NULL, /* get_font_options */
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    /* Here is the more "modern" section of the surface backend
+     * interface which is mostly just drawing functions */
+
+    _test_paginated_surface_paint,
+    _test_paginated_surface_mask,
+    _test_paginated_surface_stroke,
+    _test_paginated_surface_fill,
+    NULL, /* fill-stroke */
+    NULL, /* replaced by show_text_glyphs */
+    _test_paginated_surface_has_show_text_glyphs,
+    _test_paginated_surface_show_text_glyphs
+};
+
+static const cairo_paginated_surface_backend_t test_paginated_surface_paginated_backend = {
+    NULL, /* start_page */
+    _test_paginated_surface_set_paginated_mode
+};
diff --git a/libs/cairo-1.16.0/src/test-paginated-surface.h b/libs/cairo-1.16.0/src/test-paginated-surface.h
new file mode 100644
index 0000000..2bd98aa
--- /dev/null
+++ b/libs/cairo-1.16.0/src/test-paginated-surface.h
@@ -0,0 +1,48 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Carl Worth <cworth@cworth.org>
+ */
+
+#ifndef TEST_PAGINATED_SURFACE_H
+#define TEST_PAGINATED_SURFACE_H
+
+#include "cairo.h"
+
+CAIRO_BEGIN_DECLS
+
+cairo_surface_t *
+_cairo_test_paginated_surface_create (cairo_surface_t *target);
+
+CAIRO_END_DECLS
+
+#endif /* TEST_PAGINATED_SURFACE_H */
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-debug.c b/libs/cairo-1.16.0/src/win32/cairo-win32-debug.c
new file mode 100644
index 0000000..5a971bd
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-debug.c
@@ -0,0 +1,87 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *	Stuart Parmenter <stuart@mozilla.com>
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include "cairoint.h"
+#include "cairo-win32-private.h"
+
+#include <wchar.h>
+#include <windows.h>
+
+void
+_cairo_win32_debug_dump_hrgn (HRGN rgn, char *header)
+{
+    RGNDATA *rd;
+    unsigned int z;
+
+    if (header)
+	fprintf (stderr, "%s\n", header);
+
+    if (rgn == NULL) {
+	fprintf (stderr, " NULL\n");
+    }
+
+    z = GetRegionData(rgn, 0, NULL);
+    rd = (RGNDATA*) _cairo_malloc (z);
+    z = GetRegionData(rgn, z, rd);
+
+    fprintf (stderr, " %ld rects, bounds: %ld %ld %ld %ld\n",
+	     rd->rdh.nCount,
+	     rd->rdh.rcBound.left,
+	     rd->rdh.rcBound.top,
+	     rd->rdh.rcBound.right - rd->rdh.rcBound.left,
+	     rd->rdh.rcBound.bottom - rd->rdh.rcBound.top);
+
+    for (z = 0; z < rd->rdh.nCount; z++) {
+	RECT r = ((RECT*)rd->Buffer)[z];
+	fprintf (stderr, " [%d]: [%ld %ld %ld %ld]\n",
+		 z, r.left, r.top, r.right - r.left, r.bottom - r.top);
+    }
+
+    free(rd);
+    fflush (stderr);
+}
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-device.c b/libs/cairo-1.16.0/src/win32/cairo-win32-device.c
new file mode 100644
index 0000000..6fce722
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-device.c
@@ -0,0 +1,202 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *	Stuart Parmenter <stuart@mozilla.com>
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include "cairoint.h"
+
+#include "cairo-atomic-private.h"
+#include "cairo-device-private.h"
+#include "cairo-win32-private.h"
+
+#include <wchar.h>
+#include <windows.h>
+
+static cairo_device_t *__cairo_win32_device;
+
+static cairo_status_t
+_cairo_win32_device_flush (void *device)
+{
+    GdiFlush ();
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_win32_device_finish (void *device)
+{
+}
+
+static void
+_cairo_win32_device_destroy (void *device)
+{
+    free (device);
+}
+
+static const cairo_device_backend_t _cairo_win32_device_backend = {
+    CAIRO_DEVICE_TYPE_WIN32,
+
+    NULL, NULL, /* lock, unlock */
+
+    _cairo_win32_device_flush,
+    _cairo_win32_device_finish,
+    _cairo_win32_device_destroy,
+};
+
+#if 0
+D2D1_RENDER_TARGET_PROPERTIES props = D2D1::RenderTargetProperties(D2D1_RENDER_TARGET_TYPE_DEFAULT,
+								   D2D1::PixelFormat(
+										     DXGI_FORMAT_B8G8R8A8_UNORM,
+										     D2D1_ALPHA_MODE_IGNORE),
+								   0,
+								   0,
+								   D2D1_RENDER_TARGET_USAGE_NONE,
+								   D2D1_FEATURE_LEVEL_DEFAULT
+								  );
+
+hr = m_pD2DFactory->CreateDCRenderTarget(&props, &device->d2d);
+#endif
+
+static cairo_bool_t is_win98 (void)
+{
+    OSVERSIONINFO os;
+
+    os.dwOSVersionInfoSize = sizeof (os);
+    GetVersionEx (&os);
+
+    return (VER_PLATFORM_WIN32_WINDOWS == os.dwPlatformId &&
+	    os.dwMajorVersion == 4 &&
+	    os.dwMinorVersion == 10);
+}
+
+static void *
+_cairo_win32_device_get_alpha_blend (cairo_win32_device_t *device)
+{
+    void *func = NULL;
+
+    if (is_win98 ())
+	return NULL;
+
+    device->msimg32_dll = LoadLibraryW (L"msimg32");
+    if (device->msimg32_dll)
+	func = GetProcAddress (device->msimg32_dll, "AlphaBlend");
+
+    return func;
+}
+
+cairo_device_t *
+_cairo_win32_device_get (void)
+{
+    cairo_win32_device_t *device;
+
+    CAIRO_MUTEX_INITIALIZE ();
+
+    if (__cairo_win32_device)
+	return cairo_device_reference (__cairo_win32_device);
+
+    device = _cairo_malloc (sizeof (*device));
+
+    _cairo_device_init (&device->base, &_cairo_win32_device_backend);
+
+    device->compositor = _cairo_win32_gdi_compositor_get ();
+
+    device->msimg32_dll = NULL;
+    device->alpha_blend = _cairo_win32_device_get_alpha_blend (device);
+
+    if (_cairo_atomic_ptr_cmpxchg ((void **)&__cairo_win32_device, NULL, device))
+	return cairo_device_reference(&device->base);
+
+    _cairo_win32_device_destroy (device);
+    return cairo_device_reference (__cairo_win32_device);
+}
+
+unsigned
+_cairo_win32_flags_for_dc (HDC dc, cairo_format_t format)
+{
+    uint32_t flags = 0;
+    cairo_bool_t is_display = GetDeviceCaps(dc, TECHNOLOGY) == DT_RASDISPLAY;
+
+    if (format == CAIRO_FORMAT_RGB24 || format == CAIRO_FORMAT_ARGB32)
+    {
+	int cap = GetDeviceCaps(dc, RASTERCAPS);
+	if (cap & RC_BITBLT)
+	    flags |= CAIRO_WIN32_SURFACE_CAN_BITBLT;
+	if (!is_display && GetDeviceCaps(dc, SHADEBLENDCAPS) != SB_NONE)
+	    flags |= CAIRO_WIN32_SURFACE_CAN_ALPHABLEND;
+
+	/* ARGB32 available operations are a strict subset of RGB24
+	 * available operations. This is because the same GDI functions
+	 * can be used but most of them always reset alpha channel to 0
+	 * which is bad for ARGB32.
+	 */
+	if (format == CAIRO_FORMAT_RGB24)
+	{
+	    flags |= CAIRO_WIN32_SURFACE_CAN_RGB_BRUSH;
+	    if (cap & RC_STRETCHBLT)
+		flags |= CAIRO_WIN32_SURFACE_CAN_STRETCHBLT;
+	    if (cap & RC_STRETCHDIB)
+		flags |= CAIRO_WIN32_SURFACE_CAN_STRETCHDIB;
+	}
+    }
+
+    if (is_display) {
+	flags |= CAIRO_WIN32_SURFACE_IS_DISPLAY;
+
+	/* These will always be possible, but the actual GetDeviceCaps
+	 * calls will return whether they're accelerated or not.
+	 * We may want to use our own (pixman) routines sometimes
+	 * if they're eventually faster, but for now have GDI do
+	 * everything.
+	 */
+#if 0
+	flags |= CAIRO_WIN32_SURFACE_CAN_BITBLT;
+	flags |= CAIRO_WIN32_SURFACE_CAN_ALPHABLEND;
+	flags |= CAIRO_WIN32_SURFACE_CAN_STRETCHBLT;
+	flags |= CAIRO_WIN32_SURFACE_CAN_STRETCHDIB;
+#endif
+    }
+
+    return flags;
+}
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-display-surface.c b/libs/cairo-1.16.0/src/win32/cairo-win32-display-surface.c
new file mode 100644
index 0000000..304d34a
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-display-surface.c
@@ -0,0 +1,1147 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *	Stuart Parmenter <stuart@mozilla.com>
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include "cairoint.h"
+
+#include "cairo-clip-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-compositor-private.h"
+#include "cairo-damage-private.h"
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-paginated-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-win32-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-surface-fallback-private.h"
+#include "cairo-surface-backend-private.h"
+
+#include <wchar.h>
+#include <windows.h>
+
+#if defined(__MINGW32__) && !defined(ETO_PDY)
+# define ETO_PDY 0x2000
+#endif
+
+#define PELS_72DPI  ((LONG)(72. / 0.0254))
+
+/**
+ * SECTION:cairo-win32
+ * @Title: Win32 Surfaces
+ * @Short_Description: Microsoft Windows surface support
+ * @See_Also: #cairo_surface_t
+ *
+ * The Microsoft Windows surface is used to render cairo graphics to
+ * Microsoft Windows windows, bitmaps, and printing device contexts.
+ *
+ * The surface returned by cairo_win32_printing_surface_create() is of surface
+ * type %CAIRO_SURFACE_TYPE_WIN32_PRINTING and is a multi-page vector surface
+ * type.
+ *
+ * The surface returned by the other win32 constructors is of surface type
+ * %CAIRO_SURFACE_TYPE_WIN32 and is a raster surface type.
+ **/
+
+/**
+ * CAIRO_HAS_WIN32_SURFACE:
+ *
+ * Defined if the Microsoft Windows surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.0
+ **/
+
+static const cairo_surface_backend_t cairo_win32_display_surface_backend;
+
+static cairo_status_t
+_create_dc_and_bitmap (cairo_win32_display_surface_t *surface,
+		       HDC                    original_dc,
+		       cairo_format_t         format,
+		       int                    width,
+		       int                    height,
+		       unsigned char        **bits_out,
+		       int                   *rowstride_out)
+{
+    cairo_status_t status;
+
+    BITMAPINFO *bitmap_info = NULL;
+    struct {
+	BITMAPINFOHEADER bmiHeader;
+	RGBQUAD bmiColors[2];
+    } bmi_stack;
+    void *bits;
+
+    int num_palette = 0;	/* Quiet GCC */
+    int i;
+
+    surface->win32.dc = NULL;
+    surface->bitmap = NULL;
+    surface->is_dib = FALSE;
+
+    switch (format) {
+    default:
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB30:
+	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+	num_palette = 0;
+	break;
+
+    case CAIRO_FORMAT_A8:
+	num_palette = 256;
+	break;
+
+    case CAIRO_FORMAT_A1:
+	num_palette = 2;
+	break;
+    }
+
+    if (num_palette > 2) {
+	bitmap_info = _cairo_malloc_ab_plus_c (num_palette, sizeof(RGBQUAD), sizeof(BITMAPINFOHEADER));
+	if (!bitmap_info)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+    } else {
+	bitmap_info = (BITMAPINFO *)&bmi_stack;
+    }
+
+    bitmap_info->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
+    bitmap_info->bmiHeader.biWidth = width == 0 ? 1 : width;
+    bitmap_info->bmiHeader.biHeight = height == 0 ? -1 : - height; /* top-down */
+    bitmap_info->bmiHeader.biSizeImage = 0;
+    bitmap_info->bmiHeader.biXPelsPerMeter = PELS_72DPI; /* unused here */
+    bitmap_info->bmiHeader.biYPelsPerMeter = PELS_72DPI; /* unused here */
+    bitmap_info->bmiHeader.biPlanes = 1;
+
+    switch (format) {
+    case CAIRO_FORMAT_INVALID:
+    case CAIRO_FORMAT_RGB16_565:
+    case CAIRO_FORMAT_RGB30:
+	ASSERT_NOT_REACHED;
+    /* We can't create real RGB24 bitmaps because something seems to
+     * break if we do, especially if we don't set up an image
+     * fallback.  It could be a bug with using a 24bpp pixman image
+     * (and creating one with masks).  So treat them like 32bpp.
+     * Note: This causes problems when using BitBlt/AlphaBlend/etc!
+     * see end of file.
+     */
+    case CAIRO_FORMAT_RGB24:
+    case CAIRO_FORMAT_ARGB32:
+	bitmap_info->bmiHeader.biBitCount = 32;
+	bitmap_info->bmiHeader.biCompression = BI_RGB;
+	bitmap_info->bmiHeader.biClrUsed = 0;	/* unused */
+	bitmap_info->bmiHeader.biClrImportant = 0;
+	break;
+
+    case CAIRO_FORMAT_A8:
+	bitmap_info->bmiHeader.biBitCount = 8;
+	bitmap_info->bmiHeader.biCompression = BI_RGB;
+	bitmap_info->bmiHeader.biClrUsed = 256;
+	bitmap_info->bmiHeader.biClrImportant = 0;
+
+	for (i = 0; i < 256; i++) {
+	    bitmap_info->bmiColors[i].rgbBlue = i;
+	    bitmap_info->bmiColors[i].rgbGreen = i;
+	    bitmap_info->bmiColors[i].rgbRed = i;
+	    bitmap_info->bmiColors[i].rgbReserved = 0;
+	}
+	break;
+
+    case CAIRO_FORMAT_A1:
+	bitmap_info->bmiHeader.biBitCount = 1;
+	bitmap_info->bmiHeader.biCompression = BI_RGB;
+	bitmap_info->bmiHeader.biClrUsed = 2;
+	bitmap_info->bmiHeader.biClrImportant = 0;
+
+	for (i = 0; i < 2; i++) {
+	    bitmap_info->bmiColors[i].rgbBlue = i * 255;
+	    bitmap_info->bmiColors[i].rgbGreen = i * 255;
+	    bitmap_info->bmiColors[i].rgbRed = i * 255;
+	    bitmap_info->bmiColors[i].rgbReserved = 0;
+	}
+	break;
+    }
+
+    surface->win32.dc = CreateCompatibleDC (original_dc);
+    if (!surface->win32.dc)
+	goto FAIL;
+
+    surface->bitmap = CreateDIBSection (surface->win32.dc,
+					bitmap_info,
+					DIB_RGB_COLORS,
+					&bits,
+					NULL, 0);
+    if (!surface->bitmap)
+	goto FAIL;
+
+    surface->is_dib = TRUE;
+
+    GdiFlush();
+
+    surface->saved_dc_bitmap = SelectObject (surface->win32.dc,
+					     surface->bitmap);
+    if (!surface->saved_dc_bitmap)
+	goto FAIL;
+
+    if (bitmap_info && num_palette > 2)
+	free (bitmap_info);
+
+    if (bits_out)
+	*bits_out = bits;
+
+    if (rowstride_out) {
+	/* Windows bitmaps are padded to 32-bit (dword) boundaries */
+	switch (format) {
+	case CAIRO_FORMAT_INVALID:
+	case CAIRO_FORMAT_RGB16_565:
+	case CAIRO_FORMAT_RGB30:
+	    ASSERT_NOT_REACHED;
+	case CAIRO_FORMAT_ARGB32:
+	case CAIRO_FORMAT_RGB24:
+	    *rowstride_out = 4 * width;
+	    break;
+
+	case CAIRO_FORMAT_A8:
+	    *rowstride_out = (width + 3) & ~3;
+	    break;
+
+	case CAIRO_FORMAT_A1:
+	    *rowstride_out = ((width + 31) & ~31) / 8;
+	    break;
+	}
+    }
+
+    surface->win32.flags = _cairo_win32_flags_for_dc (surface->win32.dc, format);
+
+    return CAIRO_STATUS_SUCCESS;
+
+ FAIL:
+    status = _cairo_win32_print_gdi_error (__FUNCTION__);
+
+    if (bitmap_info && num_palette > 2)
+	free (bitmap_info);
+
+    if (surface->saved_dc_bitmap) {
+	SelectObject (surface->win32.dc, surface->saved_dc_bitmap);
+	surface->saved_dc_bitmap = NULL;
+    }
+
+    if (surface->bitmap) {
+	DeleteObject (surface->bitmap);
+	surface->bitmap = NULL;
+    }
+
+    if (surface->win32.dc) {
+	DeleteDC (surface->win32.dc);
+	surface->win32.dc = NULL;
+    }
+
+    return status;
+}
+
+static cairo_surface_t *
+_cairo_win32_display_surface_create_for_dc (HDC             original_dc,
+					    cairo_format_t  format,
+					    int		    width,
+					    int		    height)
+{
+    cairo_status_t status;
+    cairo_device_t *device;
+    cairo_win32_display_surface_t *surface;
+    unsigned char *bits;
+    int rowstride;
+
+    surface = _cairo_malloc (sizeof (*surface));
+    if (surface == NULL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    surface->fallback = NULL;
+
+    status = _create_dc_and_bitmap (surface, original_dc, format,
+				    width, height,
+				    &bits, &rowstride);
+    if (status)
+	goto FAIL;
+
+    surface->image = cairo_image_surface_create_for_data (bits, format,
+							  width, height, rowstride);
+    status = surface->image->status;
+    if (status)
+	goto FAIL;
+
+    _cairo_image_surface_set_parent (to_image_surface(surface->image),
+				     &surface->win32.base);
+
+    surface->win32.format = format;
+
+    surface->win32.extents.x = 0;
+    surface->win32.extents.y = 0;
+    surface->win32.extents.width = width;
+    surface->win32.extents.height = height;
+    surface->win32.x_ofs = 0;
+    surface->win32.y_ofs = 0;
+
+    surface->initial_clip_rgn = NULL;
+    surface->had_simple_clip = FALSE;
+
+    device = _cairo_win32_device_get ();
+
+    _cairo_surface_init (&surface->win32.base,
+			 &cairo_win32_display_surface_backend,
+			 device,
+			 _cairo_content_from_format (format),
+			 FALSE); /* is_vector */
+
+    cairo_device_destroy (device);
+
+    return &surface->win32.base;
+
+ FAIL:
+    if (surface->bitmap) {
+	SelectObject (surface->win32.dc, surface->saved_dc_bitmap);
+	DeleteObject (surface->bitmap);
+	DeleteDC (surface->win32.dc);
+    }
+    free (surface);
+
+    return _cairo_surface_create_in_error (status);
+}
+
+static cairo_surface_t *
+_cairo_win32_display_surface_create_similar (void	    *abstract_src,
+					     cairo_content_t content,
+					     int	     width,
+					     int	     height)
+{
+    cairo_win32_display_surface_t *src = abstract_src;
+    cairo_format_t format = _cairo_format_from_content (content);
+    cairo_surface_t *new_surf = NULL;
+
+    /* We force a DIB always if:
+     * - we need alpha; or
+     * - the parent is a DIB; or
+     * - the parent is for printing (because we don't care about the
+     *   bit depth at that point)
+     *
+     * We also might end up with a DIB even if a DDB is requested if
+     * DDB creation failed due to out of memory.
+     */
+    if (!(src->is_dib || content & CAIRO_CONTENT_ALPHA)) {
+	/* try to create a ddb */
+	new_surf = cairo_win32_surface_create_with_ddb (src->win32.dc, CAIRO_FORMAT_RGB24, width, height);
+
+	if (new_surf->status)
+	    new_surf = NULL;
+    }
+
+    if (new_surf == NULL) {
+	new_surf = _cairo_win32_display_surface_create_for_dc (src->win32.dc, format, width, height);
+    }
+
+    return new_surf;
+}
+
+static cairo_surface_t *
+_cairo_win32_display_surface_create_similar_image (void	    *abstract_other,
+						   cairo_format_t format,
+						   int	     width,
+						   int	     height)
+{
+    cairo_win32_display_surface_t *surface = abstract_other;
+    cairo_image_surface_t *image;
+
+    surface = (cairo_win32_display_surface_t *)
+	_cairo_win32_display_surface_create_for_dc (surface->win32.dc,
+						    format, width, height);
+    if (surface->win32.base.status)
+	return &surface->win32.base;
+
+    /* And clear in order to comply with our user API semantics */
+    image = (cairo_image_surface_t *) surface->image;
+    if (! image->base.is_clear) {
+	memset (image->data, 0, image->stride * height);
+	image->base.is_clear = TRUE;
+    }
+
+    return &image->base;
+}
+
+static cairo_status_t
+_cairo_win32_display_surface_finish (void *abstract_surface)
+{
+    cairo_win32_display_surface_t *surface = abstract_surface;
+
+    if (surface->image && to_image_surface(surface->image)->parent) {
+	assert (to_image_surface(surface->image)->parent == &surface->win32.base);
+	/* Unhook ourselves first to avoid the double-unref from the image */
+	to_image_surface(surface->image)->parent = NULL;
+	cairo_surface_finish (surface->image);
+	cairo_surface_destroy (surface->image);
+    }
+
+    /* If we created the Bitmap and DC, destroy them */
+    if (surface->bitmap) {
+	SelectObject (surface->win32.dc, surface->saved_dc_bitmap);
+	DeleteObject (surface->bitmap);
+	DeleteDC (surface->win32.dc);
+    }
+
+    _cairo_win32_display_surface_discard_fallback (surface);
+
+    if (surface->initial_clip_rgn)
+	DeleteObject (surface->initial_clip_rgn);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_image_surface_t *
+_cairo_win32_display_surface_map_to_image (void                    *abstract_surface,
+					   const cairo_rectangle_int_t   *extents)
+{
+    cairo_win32_display_surface_t *surface = abstract_surface;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->win32.base.unique_id));
+
+    if (surface->image)
+	goto done;
+
+    if (surface->fallback == NULL) {
+	surface->fallback =
+	    _cairo_win32_display_surface_create_for_dc (surface->win32.dc,
+							surface->win32.format,
+							surface->win32.extents.x + surface->win32.extents.width,
+							surface->win32.extents.y + surface->win32.extents.height);
+	if (unlikely (status = surface->fallback->status))
+	    goto err;
+
+	if (!BitBlt (to_win32_surface(surface->fallback)->dc,
+		     surface->win32.extents.x, surface->win32.extents.y,
+		     surface->win32.extents.width,
+		     surface->win32.extents.height,
+		     surface->win32.dc,
+		     surface->win32.extents.x + surface->win32.x_ofs, /* Handling multi-monitor... */
+		     surface->win32.extents.y + surface->win32.y_ofs, /* ... setup on Win32 */
+		     SRCCOPY)) {
+	    status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+	    goto err;
+	}
+    }
+
+    surface = to_win32_display_surface (surface->fallback);
+done:
+    GdiFlush();
+    return _cairo_surface_map_to_image (surface->image, extents);
+
+err:
+    cairo_surface_destroy (surface->fallback);
+    surface->fallback = NULL;
+
+    return _cairo_image_surface_create_in_error (status);
+}
+
+static cairo_int_status_t
+_cairo_win32_display_surface_unmap_image (void                    *abstract_surface,
+					  cairo_image_surface_t   *image)
+{
+    cairo_win32_display_surface_t *surface = abstract_surface;
+
+    /* Delay the download until the next flush, which means we also need
+     * to make sure our sources rare flushed.
+     */
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, to_win32_surface(surface)->base.unique_id));
+
+    if (surface->fallback) {
+	cairo_rectangle_int_t r;
+
+	r.x = image->base.device_transform_inverse.x0;
+	r.y = image->base.device_transform_inverse.y0;
+	r.width  = image->width;
+	r.height = image->height;
+
+	TRACE ((stderr, "%s: adding damage (%d,%d)x(%d,%d)\n",
+		__FUNCTION__, r.x, r.y, r.width, r.height));
+	surface->fallback->damage =
+	    _cairo_damage_add_rectangle (surface->fallback->damage, &r);
+	surface = to_win32_display_surface (surface->fallback);
+    }
+
+    return _cairo_surface_unmap_image (surface->image, image);
+}
+
+static cairo_status_t
+_cairo_win32_display_surface_flush (void *abstract_surface, unsigned flags)
+{
+    cairo_win32_display_surface_t *surface = abstract_surface;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    if (flags)
+	return CAIRO_STATUS_SUCCESS;
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, surface->win32.base.unique_id));
+    if (surface->fallback == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (surface->fallback->damage) {
+	cairo_win32_display_surface_t *fallback;
+	cairo_damage_t *damage;
+
+	damage = _cairo_damage_reduce (surface->fallback->damage);
+	surface->fallback->damage = NULL;
+
+	fallback = to_win32_display_surface (surface->fallback);
+	assert (fallback->image);
+
+	TRACE ((stderr, "%s: flushing damage x %d\n", __FUNCTION__,
+		damage->region ? cairo_region_num_rectangles (damage->region) : 0));
+
+	if (damage->status) {
+	    if (!BitBlt (surface->win32.dc,
+			 surface->win32.extents.x + surface->win32.x_ofs, /* Handling multi-monitor... */
+			 surface->win32.extents.y + surface->win32.y_ofs, /* ... setup on Win32 */
+			 surface->win32.extents.width,
+			 surface->win32.extents.height,
+			 fallback->win32.dc,
+			 surface->win32.extents.x, surface->win32.extents.y,
+			 SRCCOPY))
+		status = _cairo_win32_print_gdi_error (__FUNCTION__);
+	} else if (damage->region) {
+	    int n = cairo_region_num_rectangles (damage->region), i;
+	    for (i = 0; i < n; i++) {
+		cairo_rectangle_int_t rect;
+
+		cairo_region_get_rectangle (damage->region, i, &rect);
+		TRACE ((stderr, "%s: damage (%d,%d)x(%d,%d)\n", __FUNCTION__,
+			rect.x, rect.y,
+			rect.width, rect.height));
+		if (!BitBlt (surface->win32.dc,
+			     rect.x + surface->win32.x_ofs, /* Handling multi-monitor... */
+			     rect.y + surface->win32.y_ofs, /* ... setup on Win32 */
+			     rect.width, rect.height,
+			     fallback->win32.dc,
+			     rect.x, rect.y,
+			     SRCCOPY)) {
+		    status = _cairo_win32_print_gdi_error (__FUNCTION__);
+		    break;
+		}
+	    }
+	}
+	_cairo_damage_destroy (damage);
+    } else {
+	cairo_surface_destroy (surface->fallback);
+	surface->fallback = NULL;
+    }
+
+    return status;
+}
+
+static cairo_status_t
+_cairo_win32_display_surface_mark_dirty (void *abstract_surface,
+					 int x, int y, int width, int height)
+{
+    _cairo_win32_display_surface_discard_fallback (abstract_surface);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_win32_save_initial_clip (HDC hdc, cairo_win32_display_surface_t *surface)
+{
+    RECT rect;
+    int clipBoxType;
+    int gm;
+    XFORM saved_xform;
+
+    /* GetClipBox/GetClipRgn and friends interact badly with a world transform
+     * set.  GetClipBox returns values in logical (transformed) coordinates;
+     * it's unclear what GetClipRgn returns, because the region is empty in the
+     * case of a SIMPLEREGION clip, but I assume device (untransformed) coordinates.
+     * Similarly, IntersectClipRect works in logical units, whereas SelectClipRgn
+     * works in device units.
+     *
+     * So, avoid the whole mess and get rid of the world transform
+     * while we store our initial data and when we restore initial coordinates.
+     *
+     * XXX we may need to modify x/y by the ViewportOrg or WindowOrg
+     * here in GM_COMPATIBLE; unclear.
+     */
+    gm = GetGraphicsMode (hdc);
+    if (gm == GM_ADVANCED) {
+	GetWorldTransform (hdc, &saved_xform);
+	ModifyWorldTransform (hdc, NULL, MWT_IDENTITY);
+    }
+
+    clipBoxType = GetClipBox (hdc, &rect);
+    if (clipBoxType == ERROR) {
+	_cairo_win32_print_gdi_error (__FUNCTION__);
+	SetGraphicsMode (hdc, gm);
+	/* XXX: Can we make a more reasonable guess at the error cause here? */
+	return _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
+    }
+
+    surface->win32.extents.x = rect.left;
+    surface->win32.extents.y = rect.top;
+    surface->win32.extents.width = rect.right - rect.left;
+    surface->win32.extents.height = rect.bottom - rect.top;
+
+    /* On multi-monitor setup, under Windows, the primary monitor always
+     * have origin (0,0).  Any monitors that extends to the left or above
+     * will have coordinates in the negative range.  Take this into
+     * account, by forcing our Win32 surface to start at extent (0,0) and
+     * using a device offset.  Cairo does not handle extents with negative
+     * offsets.
+     */
+    surface->win32.x_ofs = 0;
+    surface->win32.y_ofs = 0;
+    if ((surface->win32.extents.x < 0) ||
+	(surface->win32.extents.y < 0)) {
+	/* Negative offsets occurs for (and ONLY for) the desktop DC (virtual
+	 * desktop), when a monitor extend to the left or above the primary
+	 * monitor.
+	 *
+	 * More info @ https://www.microsoft.com/msj/0697/monitor/monitor.aspx
+	 *
+	 * Note that any other DC, including memory DC created with
+	 * CreateCompatibleDC(<virtual desktop DC>) will have extents in the
+	 * positive range.  This will be taken into account later when we perform
+	 * raster operations between the DC (may have to perform offset
+	 * translation).
+	 */
+	surface->win32.x_ofs = surface->win32.extents.x;
+	surface->win32.y_ofs = surface->win32.extents.y;
+	surface->win32.extents.x = 0;
+	surface->win32.extents.y = 0;
+    }
+
+    surface->initial_clip_rgn = NULL;
+    surface->had_simple_clip = FALSE;
+
+    if (clipBoxType == COMPLEXREGION) {
+	surface->initial_clip_rgn = CreateRectRgn (0, 0, 0, 0);
+	if (GetClipRgn (hdc, surface->initial_clip_rgn) <= 0) {
+	    DeleteObject(surface->initial_clip_rgn);
+	    surface->initial_clip_rgn = NULL;
+	}
+    } else if (clipBoxType == SIMPLEREGION) {
+	surface->had_simple_clip = TRUE;
+    }
+
+    if (gm == GM_ADVANCED)
+	SetWorldTransform (hdc, &saved_xform);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_status_t
+_cairo_win32_display_surface_set_clip (cairo_win32_display_surface_t *surface,
+				       cairo_clip_t *clip)
+{
+    char stack[512];
+    cairo_rectangle_int_t extents;
+    int num_rects;
+    RGNDATA *data;
+    size_t data_size;
+    RECT *rects;
+    int i;
+    HRGN gdi_region;
+    cairo_status_t status;
+    cairo_region_t *region;
+
+    /* The semantics we want is that any clip set by cairo combines
+     * is intersected with the clip on device context that the
+     * surface was created for. To implement this, we need to
+     * save the original clip when first setting a clip on surface.
+     */
+
+    assert (_cairo_clip_is_region (clip));
+    region = _cairo_clip_get_region (clip);
+    if (region == NULL)
+	return CAIRO_STATUS_SUCCESS;
+
+    cairo_region_get_extents (region, &extents);
+    num_rects = cairo_region_num_rectangles (region);
+
+    /* XXX see notes in _cairo_win32_save_initial_clip --
+     * this code will interact badly with a HDC which had an initial
+     * world transform -- we should probably manually transform the
+     * region rects, because SelectClipRgn takes device units, not
+     * logical units (unlike IntersectClipRect).
+     */
+
+    data_size = sizeof (RGNDATAHEADER) + num_rects * sizeof (RECT);
+    if (data_size > sizeof (stack)) {
+	data = _cairo_malloc (data_size);
+	if (!data)
+	    return _cairo_error(CAIRO_STATUS_NO_MEMORY);
+    } else
+	data = (RGNDATA *)stack;
+
+    data->rdh.dwSize = sizeof (RGNDATAHEADER);
+    data->rdh.iType = RDH_RECTANGLES;
+    data->rdh.nCount = num_rects;
+    data->rdh.nRgnSize = num_rects * sizeof (RECT);
+    data->rdh.rcBound.left = extents.x;
+    data->rdh.rcBound.top = extents.y;
+    data->rdh.rcBound.right = extents.x + extents.width;
+    data->rdh.rcBound.bottom = extents.y + extents.height;
+
+    rects = (RECT *)data->Buffer;
+    for (i = 0; i < num_rects; i++) {
+	cairo_rectangle_int_t rect;
+
+	cairo_region_get_rectangle (region, i, &rect);
+
+	rects[i].left   = rect.x;
+	rects[i].top    = rect.y;
+	rects[i].right  = rect.x + rect.width;
+	rects[i].bottom = rect.y + rect.height;
+    }
+
+    gdi_region = ExtCreateRegion (NULL, data_size, data);
+    if ((char *)data != stack)
+	free (data);
+
+    if (!gdi_region)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    /* AND the new region into our DC */
+    status = CAIRO_STATUS_SUCCESS;
+    if (ExtSelectClipRgn (surface->win32.dc, gdi_region, RGN_AND) == ERROR)
+	status = _cairo_win32_print_gdi_error (__FUNCTION__);
+
+    DeleteObject (gdi_region);
+
+    return status;
+}
+
+void
+_cairo_win32_display_surface_unset_clip (cairo_win32_display_surface_t *surface)
+{
+    XFORM saved_xform;
+    int gm = GetGraphicsMode (surface->win32.dc);
+    if (gm == GM_ADVANCED) {
+	GetWorldTransform (surface->win32.dc, &saved_xform);
+	ModifyWorldTransform (surface->win32.dc, NULL, MWT_IDENTITY);
+    }
+
+    /* initial_clip_rgn will either be a real region or NULL (which means reset to no clip region) */
+    SelectClipRgn (surface->win32.dc, surface->initial_clip_rgn);
+
+    if (surface->had_simple_clip) {
+	/* then if we had a simple clip, intersect */
+	IntersectClipRect (surface->win32.dc,
+			   surface->win32.extents.x,
+			   surface->win32.extents.y,
+			   surface->win32.extents.x + surface->win32.extents.width,
+			   surface->win32.extents.y + surface->win32.extents.height);
+    }
+
+    if (gm == GM_ADVANCED)
+	SetWorldTransform (surface->win32.dc, &saved_xform);
+}
+
+void
+_cairo_win32_display_surface_discard_fallback (cairo_win32_display_surface_t *surface)
+{
+    if (surface->fallback) {
+	TRACE ((stderr, "%s (surface=%d)\n",
+		__FUNCTION__, surface->win32.base.unique_id));
+
+	cairo_surface_finish (surface->fallback);
+	cairo_surface_destroy (surface->fallback);
+	surface->fallback = NULL;
+    }
+}
+
+static cairo_int_status_t
+_cairo_win32_display_surface_paint (void			*surface,
+				    cairo_operator_t		 op,
+				    const cairo_pattern_t	*source,
+				    const cairo_clip_t		*clip)
+{
+    cairo_win32_device_t *device = to_win32_device_from_surface (surface);
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, to_win32_surface(surface)->base.unique_id));
+
+    if (clip == NULL &&
+	(op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_CLEAR))
+	_cairo_win32_display_surface_discard_fallback (surface);
+
+    return _cairo_compositor_paint (device->compositor,
+				    surface, op, source, clip);
+}
+
+static cairo_int_status_t
+_cairo_win32_display_surface_mask (void				*surface,
+				   cairo_operator_t		 op,
+				   const cairo_pattern_t	*source,
+				   const cairo_pattern_t	*mask,
+				   const cairo_clip_t		*clip)
+{
+    cairo_win32_device_t *device = to_win32_device_from_surface (surface);
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, to_win32_surface(surface)->base.unique_id));
+
+    if (clip == NULL && op == CAIRO_OPERATOR_SOURCE)
+	_cairo_win32_display_surface_discard_fallback (surface);
+
+    return _cairo_compositor_mask (device->compositor,
+				   surface, op, source, mask, clip);
+}
+
+static cairo_int_status_t
+_cairo_win32_display_surface_stroke (void			*surface,
+				     cairo_operator_t		 op,
+				     const cairo_pattern_t	*source,
+				     const cairo_path_fixed_t	*path,
+				     const cairo_stroke_style_t	*style,
+				     const cairo_matrix_t	*ctm,
+				     const cairo_matrix_t	*ctm_inverse,
+				     double			 tolerance,
+				     cairo_antialias_t		 antialias,
+				     const cairo_clip_t		*clip)
+{
+    cairo_win32_device_t *device = to_win32_device_from_surface (surface);
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, to_win32_surface(surface)->base.unique_id));
+
+    return _cairo_compositor_stroke (device->compositor, surface,
+				     op, source, path,
+				     style, ctm, ctm_inverse,
+				     tolerance, antialias, clip);
+}
+
+static cairo_int_status_t
+_cairo_win32_display_surface_fill (void				*surface,
+				   cairo_operator_t		 op,
+				   const cairo_pattern_t	*source,
+				   const cairo_path_fixed_t	*path,
+				   cairo_fill_rule_t		 fill_rule,
+				   double			 tolerance,
+				   cairo_antialias_t		 antialias,
+				   const cairo_clip_t		*clip)
+{
+    cairo_win32_device_t *device = to_win32_device_from_surface (surface);
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, to_win32_surface(surface)->base.unique_id));
+
+    return _cairo_compositor_fill (device->compositor, surface,
+				   op, source, path,
+				   fill_rule, tolerance, antialias,
+				   clip);
+}
+
+static cairo_int_status_t
+_cairo_win32_display_surface_glyphs (void			*surface,
+				     cairo_operator_t		 op,
+				     const cairo_pattern_t	*source,
+				     cairo_glyph_t		*glyphs,
+				     int			 num_glyphs,
+				     cairo_scaled_font_t	*scaled_font,
+				     const cairo_clip_t		*clip)
+{
+    cairo_win32_device_t *device = to_win32_device_from_surface (surface);
+
+    TRACE ((stderr, "%s (surface=%d)\n",
+	    __FUNCTION__, to_win32_surface(surface)->base.unique_id));
+
+    return _cairo_compositor_glyphs (device->compositor, surface,
+				     op, source,
+				     glyphs, num_glyphs, scaled_font,
+				     clip);
+}
+
+static const cairo_surface_backend_t cairo_win32_display_surface_backend = {
+    CAIRO_SURFACE_TYPE_WIN32,
+    _cairo_win32_display_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_win32_display_surface_create_similar,
+    _cairo_win32_display_surface_create_similar_image,
+    _cairo_win32_display_surface_map_to_image,
+    _cairo_win32_display_surface_unmap_image,
+
+    _cairo_surface_default_source,
+    _cairo_surface_default_acquire_source_image,
+    _cairo_surface_default_release_source_image,
+    NULL,  /* snapshot */
+
+    NULL, /* copy_page */
+    NULL, /* show_page */
+
+    _cairo_win32_surface_get_extents,
+    NULL, /* get_font_options */
+
+    _cairo_win32_display_surface_flush,
+    _cairo_win32_display_surface_mark_dirty,
+
+    _cairo_win32_display_surface_paint,
+    _cairo_win32_display_surface_mask,
+    _cairo_win32_display_surface_stroke,
+    _cairo_win32_display_surface_fill,
+    NULL, /* fill/stroke */
+    _cairo_win32_display_surface_glyphs,
+};
+
+/* Notes:
+ *
+ * Win32 alpha-understanding functions
+ *
+ * BitBlt - will copy full 32 bits from a 32bpp DIB to result
+ *          (so it's safe to use for ARGB32->ARGB32 SOURCE blits)
+ *          (but not safe going RGB24->ARGB32, if RGB24 is also represented
+ *           as a 32bpp DIB, since the alpha isn't discarded!)
+ *
+ * AlphaBlend - if both the source and dest have alpha, even if AC_SRC_ALPHA isn't set,
+ *              it will still copy over the src alpha, because the SCA value (255) will be
+ *              multiplied by all the src components.
+ */
+
+/**
+ * cairo_win32_surface_create_with_format:
+ * @hdc: the DC to create a surface for
+ * @format: format of pixels in the surface to create
+ *
+ * Creates a cairo surface that targets the given DC.  The DC will be
+ * queried for its initial clip extents, and this will be used as the
+ * size of the cairo surface.
+ *
+ * Supported formats are:
+ * %CAIRO_FORMAT_ARGB32
+ * %CAIRO_FORMAT_RGB24
+ *
+ * Note: @format only tells cairo how to draw on the surface, not what
+ * the format of the surface is. Namely, cairo does not (and cannot)
+ * check that @hdc actually supports alpha-transparency.
+ *
+ * Return value: the newly created surface, NULL on failure
+ *
+ * Since: 1.14
+ **/
+cairo_surface_t *
+cairo_win32_surface_create_with_format (HDC hdc, cairo_format_t format)
+{
+    cairo_win32_display_surface_t *surface;
+
+    cairo_status_t status;
+    cairo_device_t *device;
+
+    switch (format) {
+    default:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+	break;
+    }
+
+    surface = _cairo_malloc (sizeof (*surface));
+    if (surface == NULL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+    status = _cairo_win32_save_initial_clip (hdc, surface);
+    if (status) {
+	free (surface);
+	return _cairo_surface_create_in_error (status);
+    }
+
+    surface->image = NULL;
+    surface->fallback = NULL;
+    surface->win32.format = format;
+
+    surface->win32.dc = hdc;
+    surface->bitmap = NULL;
+    surface->is_dib = FALSE;
+    surface->saved_dc_bitmap = NULL;
+
+    surface->win32.flags = _cairo_win32_flags_for_dc (surface->win32.dc, format);
+
+    device = _cairo_win32_device_get ();
+
+    _cairo_surface_init (&surface->win32.base,
+			 &cairo_win32_display_surface_backend,
+			 device,
+			 _cairo_content_from_format (format),
+			 FALSE); /* is_vector */
+
+    cairo_device_destroy (device);
+
+    return &surface->win32.base;
+}
+
+/**
+ * cairo_win32_surface_create:
+ * @hdc: the DC to create a surface for
+ *
+ * Creates a cairo surface that targets the given DC.  The DC will be
+ * queried for its initial clip extents, and this will be used as the
+ * size of the cairo surface.  The resulting surface will always be of
+ * format %CAIRO_FORMAT_RGB24; should you need another surface format,
+ * you will need to create one through
+ * cairo_win32_surface_create_with_format() or
+ * cairo_win32_surface_create_with_dib().
+ *
+ * Return value: the newly created surface, NULL on failure
+ *
+ * Since: 1.0
+ **/
+cairo_surface_t *
+cairo_win32_surface_create (HDC hdc)
+{
+    return cairo_win32_surface_create_with_format (hdc, CAIRO_FORMAT_RGB24);
+}
+
+/**
+ * cairo_win32_surface_create_with_dib:
+ * @format: format of pixels in the surface to create
+ * @width: width of the surface, in pixels
+ * @height: height of the surface, in pixels
+ *
+ * Creates a device-independent-bitmap surface not associated with
+ * any particular existing surface or device context. The created
+ * bitmap will be uninitialized.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.2
+ **/
+cairo_surface_t *
+cairo_win32_surface_create_with_dib (cairo_format_t format,
+				     int	    width,
+				     int	    height)
+{
+    if (! CAIRO_FORMAT_VALID (format))
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+
+    return _cairo_win32_display_surface_create_for_dc (NULL, format, width, height);
+}
+
+/**
+ * cairo_win32_surface_create_with_ddb:
+ * @hdc: a DC compatible with the surface to create
+ * @format: format of pixels in the surface to create
+ * @width: width of the surface, in pixels
+ * @height: height of the surface, in pixels
+ *
+ * Creates a device-dependent-bitmap surface not associated with
+ * any particular existing surface or device context. The created
+ * bitmap will be uninitialized.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.4
+ **/
+cairo_surface_t *
+cairo_win32_surface_create_with_ddb (HDC hdc,
+				     cairo_format_t format,
+				     int width,
+				     int height)
+{
+    cairo_win32_display_surface_t *new_surf;
+    HBITMAP ddb;
+    HDC screen_dc, ddb_dc;
+    HBITMAP saved_dc_bitmap;
+
+    switch (format) {
+    default:
+/* XXX handle these eventually */
+    case CAIRO_FORMAT_A8:
+    case CAIRO_FORMAT_A1:
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
+    case CAIRO_FORMAT_ARGB32:
+    case CAIRO_FORMAT_RGB24:
+	break;
+    }
+
+    if (!hdc) {
+	screen_dc = GetDC (NULL);
+	hdc = screen_dc;
+    } else {
+	screen_dc = NULL;
+    }
+
+    ddb_dc = CreateCompatibleDC (hdc);
+    if (ddb_dc == NULL) {
+	new_surf = (cairo_win32_display_surface_t*) _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	goto FINISH;
+    }
+
+    ddb = CreateCompatibleBitmap (hdc, width, height);
+    if (ddb == NULL) {
+	DeleteDC (ddb_dc);
+
+	/* Note that if an app actually does hit this out of memory
+	 * condition, it's going to have lots of other issues, as
+	 * video memory is probably exhausted.  However, it can often
+	 * continue using DIBs instead of DDBs.
+	 */
+	new_surf = (cairo_win32_display_surface_t*) _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+	goto FINISH;
+    }
+
+    saved_dc_bitmap = SelectObject (ddb_dc, ddb);
+
+    new_surf = (cairo_win32_display_surface_t*) cairo_win32_surface_create (ddb_dc);
+    new_surf->bitmap = ddb;
+    new_surf->saved_dc_bitmap = saved_dc_bitmap;
+    new_surf->is_dib = FALSE;
+
+FINISH:
+    if (screen_dc)
+	ReleaseDC (NULL, screen_dc);
+
+    return &new_surf->win32.base;
+}
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-font.c b/libs/cairo-1.16.0/src/win32/cairo-win32-font.c
new file mode 100644
index 0000000..1f21757
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-font.c
@@ -0,0 +1,2318 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ */
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as GetGlyphIndices */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include "cairoint.h"
+
+#include "cairo-win32-private.h"
+
+#include "cairo-array-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+
+#include <wchar.h>
+
+#ifndef SPI_GETFONTSMOOTHINGTYPE
+#define SPI_GETFONTSMOOTHINGTYPE 0x200a
+#endif
+#ifndef FE_FONTSMOOTHINGCLEARTYPE
+#define FE_FONTSMOOTHINGCLEARTYPE 2
+#endif
+#ifndef CLEARTYPE_QUALITY
+#define CLEARTYPE_QUALITY 5
+#endif
+#ifndef TT_PRIM_CSPLINE
+#define TT_PRIM_CSPLINE 3
+#endif
+
+#define CMAP_TAG 0x70616d63
+
+/**
+ * SECTION:cairo-win32-fonts
+ * @Title: Win32 Fonts
+ * @Short_Description: Font support for Microsoft Windows
+ * @See_Also: #cairo_font_face_t
+ *
+ * The Microsoft Windows font backend is primarily used to render text on
+ * Microsoft Windows systems.
+ **/
+
+/**
+ * CAIRO_HAS_WIN32_FONT:
+ *
+ * Defined if the Microsoft Windows font backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.8
+ **/
+
+const cairo_scaled_font_backend_t _cairo_win32_scaled_font_backend;
+
+typedef struct {
+    cairo_scaled_font_t base;
+
+    LOGFONTW logfont;
+
+    BYTE quality;
+
+    /* We do drawing and metrics computation in a "logical space" which
+     * is similar to font space, except that it is scaled by a factor
+     * of the (desired font size) * (WIN32_FONT_LOGICAL_SCALE). The multiplication
+     * by WIN32_FONT_LOGICAL_SCALE allows for sub-pixel precision.
+     */
+    double logical_scale;
+
+    /* The size we should actually request the font at from Windows; differs
+     * from the logical_scale because it is quantized for orthogonal
+     * transformations
+     */
+    double logical_size;
+
+    /* Transformations from device <=> logical space
+     */
+    cairo_matrix_t logical_to_device;
+    cairo_matrix_t device_to_logical;
+
+    /* We special case combinations of 90-degree-rotations, scales and
+     * flips ... that is transformations that take the axes to the
+     * axes. If preserve_axes is true, then swap_axes/swap_x/swap_y
+     * encode the 8 possibilities for orientation (4 rotation angles with
+     * and without a flip), and scale_x, scale_y the scale components.
+     */
+    cairo_bool_t preserve_axes;
+    cairo_bool_t swap_axes;
+    cairo_bool_t swap_x;
+    cairo_bool_t swap_y;
+    double x_scale;
+    double y_scale;
+
+    /* The size of the design unit of the font
+     */
+    int em_square;
+
+    HFONT scaled_hfont;
+    HFONT unscaled_hfont;
+
+    cairo_bool_t is_bitmap;
+    cairo_bool_t is_type1;
+    cairo_bool_t delete_scaled_hfont;
+    cairo_bool_t has_type1_notdef_index;
+    unsigned long type1_notdef_index;
+} cairo_win32_scaled_font_t;
+
+static cairo_status_t
+_cairo_win32_scaled_font_set_metrics (cairo_win32_scaled_font_t *scaled_font);
+
+static cairo_status_t
+_cairo_win32_scaled_font_init_glyph_metrics (cairo_win32_scaled_font_t *scaled_font,
+					     cairo_scaled_glyph_t      *scaled_glyph);
+
+static cairo_status_t
+_cairo_win32_scaled_font_init_glyph_surface (cairo_win32_scaled_font_t *scaled_font,
+                                             cairo_scaled_glyph_t      *scaled_glyph);
+
+static cairo_status_t
+_cairo_win32_scaled_font_init_glyph_path (cairo_win32_scaled_font_t *scaled_font,
+					  cairo_scaled_glyph_t      *scaled_glyph);
+
+#define NEARLY_ZERO(d) (fabs(d) < (1. / 65536.))
+
+static HDC
+_get_global_font_dc (void)
+{
+    static HDC hdc;
+
+    if (!hdc) {
+	hdc = CreateCompatibleDC (NULL);
+	if (!hdc) {
+	    _cairo_win32_print_gdi_error ("_get_global_font_dc");
+	    return NULL;
+	}
+
+	if (!SetGraphicsMode (hdc, GM_ADVANCED)) {
+	    _cairo_win32_print_gdi_error ("_get_global_font_dc");
+	    DeleteDC (hdc);
+	    return NULL;
+	}
+    }
+
+    return hdc;
+}
+
+static cairo_status_t
+_compute_transform (cairo_win32_scaled_font_t *scaled_font,
+		    cairo_matrix_t            *sc)
+{
+    cairo_status_t status;
+
+    if (NEARLY_ZERO (sc->yx) && NEARLY_ZERO (sc->xy) &&
+	    !NEARLY_ZERO(sc->xx) && !NEARLY_ZERO(sc->yy)) {
+	scaled_font->preserve_axes = TRUE;
+	scaled_font->x_scale = sc->xx;
+	scaled_font->swap_x = (sc->xx < 0);
+	scaled_font->y_scale = sc->yy;
+	scaled_font->swap_y = (sc->yy < 0);
+	scaled_font->swap_axes = FALSE;
+
+    } else if (NEARLY_ZERO (sc->xx) && NEARLY_ZERO (sc->yy) &&
+	    !NEARLY_ZERO(sc->yx) && !NEARLY_ZERO(sc->xy)) {
+	scaled_font->preserve_axes = TRUE;
+	scaled_font->x_scale = sc->yx;
+	scaled_font->swap_x = (sc->yx < 0);
+	scaled_font->y_scale = sc->xy;
+	scaled_font->swap_y = (sc->xy < 0);
+	scaled_font->swap_axes = TRUE;
+
+    } else {
+	scaled_font->preserve_axes = FALSE;
+	scaled_font->swap_x = scaled_font->swap_y = scaled_font->swap_axes = FALSE;
+    }
+
+    if (scaled_font->preserve_axes) {
+	if (scaled_font->swap_x)
+	    scaled_font->x_scale = - scaled_font->x_scale;
+	if (scaled_font->swap_y)
+	    scaled_font->y_scale = - scaled_font->y_scale;
+
+	scaled_font->logical_scale = WIN32_FONT_LOGICAL_SCALE * scaled_font->y_scale;
+	scaled_font->logical_size = WIN32_FONT_LOGICAL_SCALE *
+                                    _cairo_lround (scaled_font->y_scale);
+    }
+
+    /* The font matrix has x and y "scale" components which we extract and
+     * use as character scale values.
+     */
+    cairo_matrix_init (&scaled_font->logical_to_device,
+		       sc->xx, sc->yx, sc->xy, sc->yy, 0, 0);
+
+    if (!scaled_font->preserve_axes) {
+	status = _cairo_matrix_compute_basis_scale_factors (&scaled_font->logical_to_device,
+						      &scaled_font->x_scale, &scaled_font->y_scale,
+						      TRUE);	/* XXX: Handle vertical text */
+	if (status)
+	    return status;
+
+	scaled_font->logical_size =
+	    _cairo_lround (WIN32_FONT_LOGICAL_SCALE * scaled_font->y_scale);
+	scaled_font->logical_scale =
+	    WIN32_FONT_LOGICAL_SCALE * scaled_font->y_scale;
+    }
+
+    cairo_matrix_scale (&scaled_font->logical_to_device,
+			1.0 / scaled_font->logical_scale,
+			1.0 / scaled_font->logical_scale);
+
+    scaled_font->device_to_logical = scaled_font->logical_to_device;
+
+    status = cairo_matrix_invert (&scaled_font->device_to_logical);
+    if (status)
+	cairo_matrix_init_identity (&scaled_font->device_to_logical);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_have_cleartype_quality (void)
+{
+    OSVERSIONINFO version_info;
+
+    version_info.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
+
+    if (!GetVersionEx (&version_info)) {
+	_cairo_win32_print_gdi_error ("_have_cleartype_quality");
+	return FALSE;
+    }
+
+    return (version_info.dwMajorVersion > 5 ||
+	    (version_info.dwMajorVersion == 5 &&
+	     version_info.dwMinorVersion >= 1));	/* XP or newer */
+}
+
+static BYTE
+_get_system_quality (void)
+{
+    BOOL font_smoothing;
+    UINT smoothing_type;
+
+    if (!SystemParametersInfo (SPI_GETFONTSMOOTHING, 0, &font_smoothing, 0)) {
+	_cairo_win32_print_gdi_error ("_get_system_quality");
+	return DEFAULT_QUALITY;
+    }
+
+    if (font_smoothing) {
+	if (_have_cleartype_quality ()) {
+	    if (!SystemParametersInfo (SPI_GETFONTSMOOTHINGTYPE,
+				       0, &smoothing_type, 0)) {
+		_cairo_win32_print_gdi_error ("_get_system_quality");
+		return DEFAULT_QUALITY;
+	    }
+
+	    if (smoothing_type == FE_FONTSMOOTHINGCLEARTYPE)
+		return CLEARTYPE_QUALITY;
+	}
+
+	return ANTIALIASED_QUALITY;
+    } else {
+	return DEFAULT_QUALITY;
+    }
+}
+
+/* If face_hfont is non-%NULL then font_matrix must be a simple scale by some
+ * factor S, ctm must be the identity, logfont->lfHeight must be -S,
+ * logfont->lfWidth, logfont->lfEscapement, logfont->lfOrientation must
+ * all be 0, and face_hfont is the result of calling CreateFontIndirectW on
+ * logfont.
+ */
+static cairo_status_t
+_win32_scaled_font_create (LOGFONTW                   *logfont,
+			   HFONT                      face_hfont,
+			   cairo_font_face_t	      *font_face,
+			   const cairo_matrix_t       *font_matrix,
+			   const cairo_matrix_t       *ctm,
+			   const cairo_font_options_t *options,
+			   cairo_scaled_font_t       **font_out)
+{
+    HDC hdc;
+    cairo_win32_scaled_font_t *f;
+    cairo_matrix_t scale;
+    cairo_status_t status;
+
+    hdc = _get_global_font_dc ();
+    if (hdc == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    f = _cairo_malloc (sizeof(cairo_win32_scaled_font_t));
+    if (f == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    f->logfont = *logfont;
+
+    /* We don't have any control over the hinting style or subpixel
+     * order in the Win32 font API, so we ignore those parts of
+     * cairo_font_options_t. We use the 'antialias' field to set
+     * the 'quality'.
+     *
+     * XXX: The other option we could pay attention to, but don't
+     *      here is the hint_metrics options.
+     */
+    if (options->antialias == CAIRO_ANTIALIAS_DEFAULT)
+	f->quality = _get_system_quality ();
+    else {
+	switch (options->antialias) {
+	case CAIRO_ANTIALIAS_NONE:
+	    f->quality = NONANTIALIASED_QUALITY;
+	    break;
+	case CAIRO_ANTIALIAS_GRAY:
+	case CAIRO_ANTIALIAS_FAST:
+	case CAIRO_ANTIALIAS_GOOD:
+	    f->quality = ANTIALIASED_QUALITY;
+	    break;
+	case CAIRO_ANTIALIAS_SUBPIXEL:
+	case CAIRO_ANTIALIAS_BEST:
+	    if (_have_cleartype_quality ())
+		f->quality = CLEARTYPE_QUALITY;
+	    else
+		f->quality = ANTIALIASED_QUALITY;
+	    break;
+	case CAIRO_ANTIALIAS_DEFAULT:
+	    ASSERT_NOT_REACHED;
+	}
+    }
+
+    f->em_square = 0;
+    f->scaled_hfont = NULL;
+    f->unscaled_hfont = NULL;
+    f->has_type1_notdef_index = FALSE;
+
+    if (f->quality == logfont->lfQuality ||
+        (logfont->lfQuality == DEFAULT_QUALITY &&
+         options->antialias == CAIRO_ANTIALIAS_DEFAULT)) {
+        /* If face_hfont is non-NULL, then we can use it to avoid creating our
+         * own --- because the constraints on face_hfont mentioned above
+         * guarantee it was created in exactly the same way that
+         * _win32_scaled_font_get_scaled_hfont would create it.
+         */
+        f->scaled_hfont = face_hfont;
+    }
+    /* don't delete the hfont if we're using the one passed in to us */
+    f->delete_scaled_hfont = !f->scaled_hfont;
+
+    cairo_matrix_multiply (&scale, font_matrix, ctm);
+    status = _compute_transform (f, &scale);
+    if (status)
+	goto FAIL;
+
+    status = _cairo_scaled_font_init (&f->base, font_face,
+				      font_matrix, ctm, options,
+				      &_cairo_win32_scaled_font_backend);
+    if (status)
+	goto FAIL;
+
+    status = _cairo_win32_scaled_font_set_metrics (f);
+    if (status) {
+	_cairo_scaled_font_fini (&f->base);
+	goto FAIL;
+    }
+
+    *font_out = &f->base;
+    return CAIRO_STATUS_SUCCESS;
+
+ FAIL:
+    free (f);
+    return status;
+}
+
+static cairo_status_t
+_win32_scaled_font_set_world_transform (cairo_win32_scaled_font_t *scaled_font,
+					HDC                        hdc)
+{
+    XFORM xform;
+
+    _cairo_matrix_to_win32_xform (&scaled_font->logical_to_device, &xform);
+
+    if (!SetWorldTransform (hdc, &xform))
+	return _cairo_win32_print_gdi_error ("_win32_scaled_font_set_world_transform");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_win32_scaled_font_set_identity_transform (HDC hdc)
+{
+    if (!ModifyWorldTransform (hdc, NULL, MWT_IDENTITY))
+	return _cairo_win32_print_gdi_error ("_win32_scaled_font_set_identity_transform");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_win32_scaled_font_get_scaled_hfont (cairo_win32_scaled_font_t *scaled_font,
+				     HFONT *hfont_out)
+{
+    if (!scaled_font->scaled_hfont) {
+	LOGFONTW logfont = scaled_font->logfont;
+	logfont.lfHeight = -scaled_font->logical_size;
+	logfont.lfWidth = 0;
+	logfont.lfEscapement = 0;
+	logfont.lfOrientation = 0;
+	logfont.lfQuality = scaled_font->quality;
+
+	scaled_font->scaled_hfont = CreateFontIndirectW (&logfont);
+	if (!scaled_font->scaled_hfont)
+	    return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_scaled_hfont");
+    }
+
+    *hfont_out = scaled_font->scaled_hfont;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_win32_scaled_font_get_unscaled_hfont (cairo_win32_scaled_font_t *scaled_font,
+				       HDC                        hdc,
+				       HFONT			 *hfont_out)
+{
+    if (scaled_font->unscaled_hfont == NULL) {
+	OUTLINETEXTMETRIC *otm;
+	unsigned int otm_size;
+	HFONT scaled_hfont;
+	LOGFONTW logfont;
+	cairo_status_t status;
+
+	status = _win32_scaled_font_get_scaled_hfont (scaled_font,
+						      &scaled_hfont);
+	if (status)
+	    return status;
+
+	if (! SelectObject (hdc, scaled_hfont))
+	    return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:SelectObject");
+
+	otm_size = GetOutlineTextMetrics (hdc, 0, NULL);
+	if (! otm_size)
+	    return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:GetOutlineTextMetrics");
+
+	otm = _cairo_malloc (otm_size);
+	if (otm == NULL)
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+	if (! GetOutlineTextMetrics (hdc, otm_size, otm)) {
+	    status = _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:GetOutlineTextMetrics");
+	    free (otm);
+	    return status;
+	}
+
+	scaled_font->em_square = otm->otmEMSquare;
+	free (otm);
+
+	logfont = scaled_font->logfont;
+	logfont.lfHeight = -scaled_font->em_square;
+	logfont.lfWidth = 0;
+	logfont.lfEscapement = 0;
+	logfont.lfOrientation = 0;
+	logfont.lfQuality = scaled_font->quality;
+
+	scaled_font->unscaled_hfont = CreateFontIndirectW (&logfont);
+	if (! scaled_font->unscaled_hfont)
+	    return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:CreateIndirect");
+    }
+
+    *hfont_out = scaled_font->unscaled_hfont;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_scaled_font_select_unscaled_font (cairo_scaled_font_t *scaled_font,
+					       HDC                  hdc)
+{
+    cairo_status_t status;
+    HFONT hfont;
+    HFONT old_hfont = NULL;
+
+    status = _win32_scaled_font_get_unscaled_hfont ((cairo_win32_scaled_font_t *)scaled_font, hdc, &hfont);
+    if (status)
+	return status;
+
+    old_hfont = SelectObject (hdc, hfont);
+    if (!old_hfont)
+	return _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_select_unscaled_font");
+
+    status = _win32_scaled_font_set_identity_transform (hdc);
+    if (status) {
+	SelectObject (hdc, old_hfont);
+	return status;
+    }
+
+    SetMapMode (hdc, MM_TEXT);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_bool_t
+_cairo_win32_scaled_font_is_type1 (cairo_scaled_font_t *scaled_font)
+{
+    cairo_win32_scaled_font_t *win32_scaled_font;
+
+    win32_scaled_font = (cairo_win32_scaled_font_t *) scaled_font;
+
+    return win32_scaled_font->is_type1;
+}
+
+cairo_bool_t
+_cairo_win32_scaled_font_is_bitmap (cairo_scaled_font_t *scaled_font)
+{
+    cairo_win32_scaled_font_t *win32_scaled_font;
+
+    win32_scaled_font = (cairo_win32_scaled_font_t *) scaled_font;
+
+    return win32_scaled_font->is_bitmap;
+}
+
+static void
+_cairo_win32_scaled_font_done_unscaled_font (cairo_scaled_font_t *scaled_font)
+{
+}
+
+/* implement the font backend interface */
+
+static cairo_status_t
+_cairo_win32_font_face_create_for_toy (cairo_toy_font_face_t   *toy_face,
+				       cairo_font_face_t      **font_face)
+{
+    LOGFONTW logfont;
+    uint16_t *face_name;
+    int face_name_len;
+    cairo_status_t status;
+
+    status = _cairo_utf8_to_utf16 (toy_face->family, -1,
+				   &face_name, &face_name_len);
+    if (status)
+	return status;
+
+    if (face_name_len > LF_FACESIZE - 1)
+	face_name_len = LF_FACESIZE - 1;
+
+    memcpy (logfont.lfFaceName, face_name, sizeof (uint16_t) * face_name_len);
+    logfont.lfFaceName[face_name_len] = 0;
+    free (face_name);
+
+    logfont.lfHeight = 0;	/* filled in later */
+    logfont.lfWidth = 0;	/* filled in later */
+    logfont.lfEscapement = 0;	/* filled in later */
+    logfont.lfOrientation = 0;	/* filled in later */
+
+    switch (toy_face->weight) {
+    case CAIRO_FONT_WEIGHT_NORMAL:
+    default:
+	logfont.lfWeight = FW_NORMAL;
+	break;
+    case CAIRO_FONT_WEIGHT_BOLD:
+	logfont.lfWeight = FW_BOLD;
+	break;
+    }
+
+    switch (toy_face->slant) {
+    case CAIRO_FONT_SLANT_NORMAL:
+    default:
+	logfont.lfItalic = FALSE;
+	break;
+    case CAIRO_FONT_SLANT_ITALIC:
+    case CAIRO_FONT_SLANT_OBLIQUE:
+	logfont.lfItalic = TRUE;
+	break;
+    }
+
+    logfont.lfUnderline = FALSE;
+    logfont.lfStrikeOut = FALSE;
+    /* The docs for LOGFONT discourage using this, since the
+     * interpretation is locale-specific, but it's not clear what
+     * would be a better alternative.
+     */
+    logfont.lfCharSet = DEFAULT_CHARSET;
+    logfont.lfOutPrecision = OUT_DEFAULT_PRECIS;
+    logfont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
+    logfont.lfQuality = DEFAULT_QUALITY; /* filled in later */
+    logfont.lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE;
+
+    *font_face = cairo_win32_font_face_create_for_logfontw (&logfont);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_win32_scaled_font_fini (void *abstract_font)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+
+    if (scaled_font == NULL)
+	return;
+
+    if (scaled_font->scaled_hfont && scaled_font->delete_scaled_hfont)
+	DeleteObject (scaled_font->scaled_hfont);
+
+    if (scaled_font->unscaled_hfont)
+	DeleteObject (scaled_font->unscaled_hfont);
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_type1_text_to_glyphs (cairo_win32_scaled_font_t *scaled_font,
+					       double		          x,
+					       double		          y,
+					       const char	         *utf8,
+					       cairo_glyph_t            **glyphs,
+					       int		         *num_glyphs)
+{
+    uint16_t *utf16;
+    int n16;
+    int i;
+    WORD *glyph_indices = NULL;
+    cairo_status_t status;
+    double x_pos, y_pos;
+    HDC hdc = NULL;
+    cairo_matrix_t mat;
+
+    status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &n16);
+    if (status)
+	return status;
+
+    glyph_indices = _cairo_malloc_ab (n16 + 1, sizeof (WORD));
+    if (!glyph_indices) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL1;
+    }
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+    if (status)
+	goto FAIL2;
+
+    if (GetGlyphIndicesW (hdc, utf16, n16, glyph_indices, 0) == GDI_ERROR) {
+	status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_type1_text_to_glyphs:GetGlyphIndicesW");
+	goto FAIL3;
+    }
+
+    *num_glyphs = n16;
+    *glyphs = _cairo_malloc_ab (n16, sizeof (cairo_glyph_t));
+    if (!*glyphs) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL3;
+    }
+
+    x_pos = x;
+    y_pos = y;
+
+    mat = scaled_font->base.ctm;
+    status = cairo_matrix_invert (&mat);
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    _cairo_scaled_font_freeze_cache (&scaled_font->base);
+
+    for (i = 0; i < n16; i++) {
+	cairo_scaled_glyph_t *scaled_glyph;
+
+	(*glyphs)[i].index = glyph_indices[i];
+	(*glyphs)[i].x = x_pos;
+	(*glyphs)[i].y = y_pos;
+
+	status = _cairo_scaled_glyph_lookup (&scaled_font->base,
+					     glyph_indices[i],
+					     CAIRO_SCALED_GLYPH_INFO_METRICS,
+					     &scaled_glyph);
+	if (status) {
+	    free (*glyphs);
+	    *glyphs = NULL;
+	    break;
+	}
+
+	x = scaled_glyph->x_advance;
+	y = scaled_glyph->y_advance;
+	cairo_matrix_transform_distance (&mat, &x, &y);
+	x_pos += x;
+	y_pos += y;
+    }
+
+    _cairo_scaled_font_thaw_cache (&scaled_font->base);
+
+FAIL3:
+    cairo_win32_scaled_font_done_font (&scaled_font->base);
+FAIL2:
+    free (glyph_indices);
+FAIL1:
+    free (utf16);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_text_to_glyphs (void		*abstract_font,
+					 double		x,
+					 double		y,
+					 const char	*utf8,
+					 cairo_glyph_t **glyphs,
+					 int		*num_glyphs)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    uint16_t *utf16;
+    int n16;
+    GCP_RESULTSW gcp_results;
+    unsigned int buffer_size, i;
+    WCHAR *glyph_indices = NULL;
+    int *dx = NULL;
+    cairo_status_t status;
+    double x_pos, y_pos;
+    double x_incr, y_incr;
+    HDC hdc = NULL;
+
+    /* GetCharacterPlacement() returns utf16 instead of glyph indices
+     * for Type 1 fonts. Use GetGlyphIndices for Type 1 fonts. */
+    if (scaled_font->is_type1)
+	 return _cairo_win32_scaled_font_type1_text_to_glyphs (scaled_font,
+							       x,
+							       y,
+							       utf8,
+							       glyphs,
+							       num_glyphs);
+
+    /* Compute a vector in user space along the baseline of length one logical space unit */
+    x_incr = 1;
+    y_incr = 0;
+    cairo_matrix_transform_distance (&scaled_font->base.font_matrix, &x_incr, &y_incr);
+    x_incr /= scaled_font->logical_scale;
+    y_incr /= scaled_font->logical_scale;
+
+    status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &n16);
+    if (status)
+	return status;
+
+    gcp_results.lStructSize = sizeof (GCP_RESULTS);
+    gcp_results.lpOutString = NULL;
+    gcp_results.lpOrder = NULL;
+    gcp_results.lpCaretPos = NULL;
+    gcp_results.lpClass = NULL;
+
+    buffer_size = MAX (n16 * 1.2, 16);		/* Initially guess number of chars plus a few */
+    if (buffer_size > INT_MAX) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL1;
+    }
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+    if (status)
+	goto FAIL1;
+
+    while (TRUE) {
+	free (glyph_indices);
+	glyph_indices = NULL;
+
+	free (dx);
+	dx = NULL;
+
+	glyph_indices = _cairo_malloc_ab (buffer_size, sizeof (WCHAR));
+	dx = _cairo_malloc_ab (buffer_size, sizeof (int));
+	if (!glyph_indices || !dx) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto FAIL2;
+	}
+
+	gcp_results.nGlyphs = buffer_size;
+	gcp_results.lpDx = dx;
+	gcp_results.lpGlyphs = glyph_indices;
+
+	if (!GetCharacterPlacementW (hdc, utf16, n16,
+				     0,
+				     &gcp_results,
+				     GCP_DIACRITIC | GCP_LIGATE | GCP_GLYPHSHAPE | GCP_REORDER)) {
+	    status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_text_to_glyphs");
+	    goto FAIL2;
+	}
+
+	if (gcp_results.lpDx && gcp_results.lpGlyphs)
+	    break;
+
+	/* Too small a buffer, try again */
+
+	buffer_size += buffer_size / 2;
+	if (buffer_size > INT_MAX) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto FAIL2;
+	}
+    }
+
+    *num_glyphs = gcp_results.nGlyphs;
+    *glyphs = _cairo_malloc_ab (gcp_results.nGlyphs, sizeof (cairo_glyph_t));
+    if (!*glyphs) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL2;
+    }
+
+    x_pos = x;
+    y_pos = y;
+
+    for (i = 0; i < gcp_results.nGlyphs; i++) {
+	(*glyphs)[i].index = glyph_indices[i];
+	(*glyphs)[i].x = x_pos ;
+	(*glyphs)[i].y = y_pos;
+
+	x_pos += x_incr * dx[i];
+	y_pos += y_incr * dx[i];
+    }
+
+ FAIL2:
+    free (glyph_indices);
+    free (dx);
+
+    cairo_win32_scaled_font_done_font (&scaled_font->base);
+
+ FAIL1:
+    free (utf16);
+
+    return status;
+}
+
+static unsigned long
+_cairo_win32_scaled_font_ucs4_to_index (void		*abstract_font,
+					uint32_t	 ucs4)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    wchar_t unicode[2];
+    WORD glyph_index;
+    HDC hdc = NULL;
+    cairo_status_t status;
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+    if (status)
+	return 0;
+
+    unicode[0] = ucs4;
+    unicode[1] = 0;
+    if (GetGlyphIndicesW (hdc, unicode, 1, &glyph_index, 0) == GDI_ERROR) {
+	_cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_ucs4_to_index:GetGlyphIndicesW");
+	glyph_index = 0;
+    }
+
+    cairo_win32_scaled_font_done_font (&scaled_font->base);
+
+    return glyph_index;
+}
+
+static cairo_status_t
+_cairo_win32_scaled_font_set_metrics (cairo_win32_scaled_font_t *scaled_font)
+{
+    cairo_status_t status;
+    cairo_font_extents_t extents;
+
+    TEXTMETRIC metrics = {0};
+    HDC hdc;
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    if (scaled_font->preserve_axes || scaled_font->base.options.hint_metrics == CAIRO_HINT_METRICS_OFF) {
+	/* For 90-degree rotations (including 0), we get the metrics
+	 * from the GDI in logical space, then convert back to font space
+	 */
+	status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+	if (status)
+	    return status;
+
+	if (!GetTextMetrics (hdc, &metrics)) {
+	    status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_set_metrics:GetTextMetrics");
+	}
+
+	cairo_win32_scaled_font_done_font (&scaled_font->base);
+	if (status)
+	    return status;
+
+	extents.ascent = metrics.tmAscent / scaled_font->logical_scale;
+	extents.descent = metrics.tmDescent / scaled_font->logical_scale;
+
+	extents.height = (metrics.tmHeight + metrics.tmExternalLeading) / scaled_font->logical_scale;
+	extents.max_x_advance = metrics.tmMaxCharWidth / scaled_font->logical_scale;
+	extents.max_y_advance = 0;
+
+    } else {
+	/* For all other transformations, we use the design metrics
+	 * of the font. The GDI results from GetTextMetrics() on a
+	 * transformed font are inexplicably large and we want to
+	 * avoid them.
+	 */
+	status = _cairo_win32_scaled_font_select_unscaled_font (&scaled_font->base, hdc);
+	if (status)
+	    return status;
+	GetTextMetrics (hdc, &metrics);
+	_cairo_win32_scaled_font_done_unscaled_font (&scaled_font->base);
+
+	extents.ascent = (double)metrics.tmAscent / scaled_font->em_square;
+	extents.descent = (double)metrics.tmDescent / scaled_font->em_square;
+	extents.height = (double)(metrics.tmHeight + metrics.tmExternalLeading) / scaled_font->em_square;
+	extents.max_x_advance = (double)(metrics.tmMaxCharWidth) / scaled_font->em_square;
+	extents.max_y_advance = 0;
+
+    }
+
+    scaled_font->is_bitmap = !(metrics.tmPitchAndFamily & TMPF_VECTOR);
+
+    /* Need to determine if this is a Type 1 font for the special
+     * handling in _text_to_glyphs.  Unlike TrueType or OpenType,
+     * Type1 fonts do not have a "cmap" table (or any other table).
+     * However GetFontData() will retrieve a Type1 font when
+     * requesting that GetFontData() retrieve data from the start of
+     * the file. This is to distinguish Type1 from stroke fonts such
+     * as "Script" and "Modern". The TMPF_TRUETYPE test is redundant
+     * but improves performance for the most common fonts.
+     */
+    scaled_font->is_type1 = FALSE;
+    if (!(metrics.tmPitchAndFamily & TMPF_TRUETYPE) &&
+	(metrics.tmPitchAndFamily & TMPF_VECTOR))
+    {
+	 if ((GetFontData (hdc, CMAP_TAG, 0, NULL, 0) == GDI_ERROR) &&
+	     (GetFontData (hdc, 0, 0, NULL, 0) != GDI_ERROR))
+	 {
+	      scaled_font->is_type1 = TRUE;
+	 }
+    }
+
+    return _cairo_scaled_font_set_metrics (&scaled_font->base, &extents);
+}
+
+static cairo_status_t
+_cairo_win32_scaled_font_init_glyph_metrics (cairo_win32_scaled_font_t *scaled_font,
+					     cairo_scaled_glyph_t      *scaled_glyph)
+{
+    static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, 1 } };
+    GLYPHMETRICS metrics;
+    cairo_status_t status;
+    cairo_text_extents_t extents;
+    HDC hdc;
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    if (scaled_font->is_bitmap) {
+	/* GetGlyphOutline will not work. Assume that the glyph does not extend outside the font box. */
+	cairo_font_extents_t font_extents;
+	INT width = 0;
+	UINT charIndex = _cairo_scaled_glyph_index (scaled_glyph);
+
+	cairo_scaled_font_extents (&scaled_font->base, &font_extents);
+
+	status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+	if (status)
+	    return status;
+
+	if (!GetCharWidth32(hdc, charIndex, charIndex, &width)) {
+	    status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_init_glyph_metrics:GetCharWidth32");
+	    width = 0;
+	}
+	cairo_win32_scaled_font_done_font (&scaled_font->base);
+	if (status)
+	    return status;
+
+	extents.x_bearing = 0;
+	extents.y_bearing = scaled_font->base.ctm.yy * (-font_extents.ascent / scaled_font->y_scale);
+	extents.width = width / (WIN32_FONT_LOGICAL_SCALE * scaled_font->x_scale);
+	extents.height = scaled_font->base.ctm.yy * (font_extents.ascent + font_extents.descent) / scaled_font->y_scale;
+	extents.x_advance = extents.width;
+	extents.y_advance = 0;
+    } else if (scaled_font->preserve_axes && scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF) {
+	/* If we aren't rotating / skewing the axes, then we get the metrics
+	 * from the GDI in device space and convert to font space.
+	 */
+	status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+	if (status)
+	    return status;
+
+	if (GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph),
+			      GGO_METRICS | GGO_GLYPH_INDEX,
+			      &metrics, 0, NULL, &matrix) == GDI_ERROR) {
+	    memset (&metrics, 0, sizeof (GLYPHMETRICS));
+	} else {
+	    if (metrics.gmBlackBoxX > 0 && scaled_font->base.options.antialias != CAIRO_ANTIALIAS_NONE) {
+		/* The bounding box reported by Windows supposedly contains the glyph's "black" area;
+		 * however, antialiasing (especially with ClearType) means that the actual image that
+		 * needs to be rendered may "bleed" into the adjacent pixels, mainly on the right side.
+		 * To avoid clipping the glyphs when drawn by _cairo_surface_fallback_show_glyphs,
+		 * for example, or other code that uses glyph extents to determine the area to update,
+		 * we add a pixel of "slop" to left side of the nominal "black" area returned by GDI,
+		 * and two pixels to the right (as tests show some glyphs bleed into this column).
+		 */
+		metrics.gmptGlyphOrigin.x -= 1;
+		metrics.gmBlackBoxX += 3;
+	    }
+	}
+	cairo_win32_scaled_font_done_font (&scaled_font->base);
+
+	if (scaled_font->swap_axes) {
+	    extents.x_bearing = - metrics.gmptGlyphOrigin.y / scaled_font->y_scale;
+	    extents.y_bearing = metrics.gmptGlyphOrigin.x / scaled_font->x_scale;
+	    extents.width = metrics.gmBlackBoxY / scaled_font->y_scale;
+	    extents.height = metrics.gmBlackBoxX / scaled_font->x_scale;
+	    extents.x_advance = metrics.gmCellIncY / scaled_font->x_scale;
+	    extents.y_advance = metrics.gmCellIncX / scaled_font->y_scale;
+	} else {
+	    extents.x_bearing = metrics.gmptGlyphOrigin.x / scaled_font->x_scale;
+	    extents.y_bearing = - metrics.gmptGlyphOrigin.y / scaled_font->y_scale;
+	    extents.width = metrics.gmBlackBoxX / scaled_font->x_scale;
+	    extents.height = metrics.gmBlackBoxY / scaled_font->y_scale;
+	    extents.x_advance = metrics.gmCellIncX / scaled_font->x_scale;
+	    extents.y_advance = metrics.gmCellIncY / scaled_font->y_scale;
+	}
+
+	if (scaled_font->swap_x) {
+	    extents.x_bearing = (- extents.x_bearing - extents.width);
+	    extents.x_advance = - extents.x_advance;
+	}
+
+	if (scaled_font->swap_y) {
+	    extents.y_bearing = (- extents.y_bearing - extents.height);
+	    extents.y_advance = - extents.y_advance;
+	}
+    } else {
+	/* For all other transformations, we use the design metrics
+	 * of the font.
+	 */
+	status = _cairo_win32_scaled_font_select_unscaled_font (&scaled_font->base, hdc);
+	if (status)
+	    return status;
+
+	if (GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph),
+	                      GGO_METRICS | GGO_GLYPH_INDEX,
+			      &metrics, 0, NULL, &matrix) == GDI_ERROR) {
+	    memset (&metrics, 0, sizeof (GLYPHMETRICS));
+	}
+	_cairo_win32_scaled_font_done_unscaled_font (&scaled_font->base);
+
+	extents.x_bearing = (double)metrics.gmptGlyphOrigin.x / scaled_font->em_square;
+	extents.y_bearing = - (double)metrics.gmptGlyphOrigin.y / scaled_font->em_square;
+	extents.width = (double)metrics.gmBlackBoxX / scaled_font->em_square;
+	extents.height = (double)metrics.gmBlackBoxY / scaled_font->em_square;
+	extents.x_advance = (double)metrics.gmCellIncX / scaled_font->em_square;
+	extents.y_advance = (double)metrics.gmCellIncY / scaled_font->em_square;
+    }
+
+    _cairo_scaled_glyph_set_metrics (scaled_glyph,
+				     &scaled_font->base,
+				     &extents);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* Not currently used code, but may be useful in the future if we add
+ * back the capability to the scaled font backend interface to get the
+ * actual device space bbox rather than computing it from the
+ * font-space metrics.
+ */
+#if 0
+static cairo_status_t
+_cairo_win32_scaled_font_glyph_bbox (void		 *abstract_font,
+				     const cairo_glyph_t *glyphs,
+				     int                  num_glyphs,
+				     cairo_box_t         *bbox)
+{
+    static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, 1 } };
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    int x1 = 0, x2 = 0, y1 = 0, y2 = 0;
+
+    if (num_glyphs > 0) {
+	HDC hdc;
+	GLYPHMETRICS metrics;
+	cairo_status_t status;
+	int i;
+
+	hdc = _get_global_font_dc ();
+	assert (hdc != NULL);
+
+	status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+	if (status)
+	    return status;
+
+	for (i = 0; i < num_glyphs; i++) {
+	    int x = _cairo_lround (glyphs[i].x);
+	    int y = _cairo_lround (glyphs[i].y);
+
+	    GetGlyphOutlineW (hdc, glyphs[i].index, GGO_METRICS | GGO_GLYPH_INDEX,
+			     &metrics, 0, NULL, &matrix);
+
+	    if (i == 0 || x1 > x + metrics.gmptGlyphOrigin.x)
+		x1 = x + metrics.gmptGlyphOrigin.x;
+	    if (i == 0 || y1 > y - metrics.gmptGlyphOrigin.y)
+		y1 = y - metrics.gmptGlyphOrigin.y;
+	    if (i == 0 || x2 < x + metrics.gmptGlyphOrigin.x + (int)metrics.gmBlackBoxX)
+		x2 = x + metrics.gmptGlyphOrigin.x + (int)metrics.gmBlackBoxX;
+	    if (i == 0 || y2 < y - metrics.gmptGlyphOrigin.y + (int)metrics.gmBlackBoxY)
+		y2 = y - metrics.gmptGlyphOrigin.y + (int)metrics.gmBlackBoxY;
+	}
+
+	cairo_win32_scaled_font_done_font (&scaled_font->base);
+    }
+
+    bbox->p1.x = _cairo_fixed_from_int (x1);
+    bbox->p1.y = _cairo_fixed_from_int (y1);
+    bbox->p2.x = _cairo_fixed_from_int (x2);
+    bbox->p2.y = _cairo_fixed_from_int (y2);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+#endif
+
+typedef struct {
+    cairo_win32_scaled_font_t *scaled_font;
+    HDC hdc;
+
+    cairo_array_t glyphs;
+    cairo_array_t dx;
+
+    int start_x;
+    int last_x;
+    int last_y;
+} cairo_glyph_state_t;
+
+static void
+_start_glyphs (cairo_glyph_state_t        *state,
+	       cairo_win32_scaled_font_t  *scaled_font,
+	       HDC                         hdc)
+{
+    state->hdc = hdc;
+    state->scaled_font = scaled_font;
+
+    _cairo_array_init (&state->glyphs, sizeof (WCHAR));
+    _cairo_array_init (&state->dx, sizeof (int));
+}
+
+static cairo_status_t
+_flush_glyphs (cairo_glyph_state_t *state)
+{
+    cairo_status_t status;
+    int dx = 0;
+    WCHAR * elements;
+    int * dx_elements;
+
+    status = _cairo_array_append (&state->dx, &dx);
+    if (status)
+	return status;
+
+    elements = _cairo_array_index (&state->glyphs, 0);
+    dx_elements = _cairo_array_index (&state->dx, 0);
+    if (!ExtTextOutW (state->hdc,
+		      state->start_x, state->last_y,
+		      ETO_GLYPH_INDEX,
+		      NULL,
+		      elements,
+		      state->glyphs.num_elements,
+		      dx_elements)) {
+	return _cairo_win32_print_gdi_error ("_flush_glyphs");
+    }
+
+    _cairo_array_truncate (&state->glyphs, 0);
+    _cairo_array_truncate (&state->dx, 0);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_add_glyph (cairo_glyph_state_t *state,
+	    unsigned long        index,
+	    double               device_x,
+	    double               device_y)
+{
+    cairo_status_t status;
+    double user_x = device_x;
+    double user_y = device_y;
+    WCHAR glyph_index = index;
+    int logical_x, logical_y;
+
+    cairo_matrix_transform_point (&state->scaled_font->device_to_logical, &user_x, &user_y);
+
+    logical_x = _cairo_lround (user_x);
+    logical_y = _cairo_lround (user_y);
+
+    if (state->glyphs.num_elements > 0) {
+	int dx;
+
+	if (logical_y != state->last_y) {
+	    status = _flush_glyphs (state);
+	    if (status)
+		return status;
+	    state->start_x = logical_x;
+	} else {
+	    dx = logical_x - state->last_x;
+	    status = _cairo_array_append (&state->dx, &dx);
+	    if (status)
+		return status;
+	}
+    } else {
+	state->start_x = logical_x;
+    }
+
+    state->last_x = logical_x;
+    state->last_y = logical_y;
+
+    status = _cairo_array_append (&state->glyphs, &glyph_index);
+    if (status)
+	return status;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_finish_glyphs (cairo_glyph_state_t *state)
+{
+    cairo_status_t status;
+
+    status = _flush_glyphs (state);
+
+    _cairo_array_fini (&state->glyphs);
+    _cairo_array_fini (&state->dx);
+
+    return status;
+}
+
+static cairo_status_t
+_draw_glyphs_on_surface (cairo_win32_surface_t     *surface,
+			 cairo_win32_scaled_font_t *scaled_font,
+			 COLORREF                   color,
+			 int                        x_offset,
+			 int                        y_offset,
+			 const cairo_glyph_t       *glyphs,
+			 int			    num_glyphs)
+{
+    cairo_glyph_state_t state;
+    cairo_status_t status, status2;
+    int i;
+
+    if (!SaveDC (surface->dc))
+	return _cairo_win32_print_gdi_error ("_draw_glyphs_on_surface:SaveDC");
+
+    status = cairo_win32_scaled_font_select_font (&scaled_font->base, surface->dc);
+    if (status)
+	goto FAIL1;
+
+    SetTextColor (surface->dc, color);
+    SetTextAlign (surface->dc, TA_BASELINE | TA_LEFT);
+    SetBkMode (surface->dc, TRANSPARENT);
+
+    _start_glyphs (&state, scaled_font, surface->dc);
+
+    for (i = 0; i < num_glyphs; i++) {
+	status = _add_glyph (&state, glyphs[i].index,
+			     glyphs[i].x - x_offset, glyphs[i].y - y_offset);
+	if (status)
+	    goto FAIL2;
+    }
+
+ FAIL2:
+    status2 = _finish_glyphs (&state);
+    if (status == CAIRO_STATUS_SUCCESS)
+	status = status2;
+
+    cairo_win32_scaled_font_done_font (&scaled_font->base);
+ FAIL1:
+    RestoreDC (surface->dc, -1);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_glyph_init (void		       *abstract_font,
+				     cairo_scaled_glyph_t      *scaled_glyph,
+				     cairo_scaled_glyph_info_t  info)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    cairo_status_t status;
+
+    if ((info & CAIRO_SCALED_GLYPH_INFO_METRICS) != 0) {
+	status = _cairo_win32_scaled_font_init_glyph_metrics (scaled_font, scaled_glyph);
+	if (status)
+	    return status;
+    }
+
+    if (info & CAIRO_SCALED_GLYPH_INFO_SURFACE) {
+	status = _cairo_win32_scaled_font_init_glyph_surface (scaled_font, scaled_glyph);
+	if (status)
+	    return status;
+    }
+
+    if ((info & CAIRO_SCALED_GLYPH_INFO_PATH) != 0) {
+	status = _cairo_win32_scaled_font_init_glyph_path (scaled_font, scaled_glyph);
+	if (status)
+	    return status;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_load_truetype_table (void	       *abstract_font,
+                                             unsigned long      tag,
+                                             long               offset,
+                                             unsigned char     *buffer,
+                                             unsigned long     *length)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    HDC hdc;
+    cairo_status_t status;
+    DWORD ret;
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    tag = (tag&0x000000ff)<<24 | (tag&0x0000ff00)<<8 | (tag&0x00ff0000)>>8 | (tag&0xff000000)>>24;
+    status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+    if (status)
+	return status;
+
+    ret = GetFontData (hdc, tag, offset, buffer, *length);
+    if (ret == GDI_ERROR || (buffer && ret != *length))
+        status = CAIRO_INT_STATUS_UNSUPPORTED;
+    else
+	*length = ret;
+
+    cairo_win32_scaled_font_done_font (&scaled_font->base);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_index_to_ucs4 (void		*abstract_font,
+					unsigned long    index,
+					uint32_t	*ucs4)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    GLYPHSET *glyph_set;
+    uint16_t *utf16 = NULL;
+    WORD *glyph_indices = NULL;
+    HDC hdc = NULL;
+    int res;
+    unsigned int i, j, num_glyphs;
+    cairo_status_t status;
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+    if (status)
+	return status;
+
+    res = GetFontUnicodeRanges(hdc, NULL);
+    if (res == 0) {
+	status = _cairo_win32_print_gdi_error (
+	    "_cairo_win32_scaled_font_index_to_ucs4:GetFontUnicodeRanges");
+	goto exit1;
+    }
+
+    glyph_set = _cairo_malloc (res);
+    if (glyph_set == NULL) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto exit1;
+    }
+
+    res = GetFontUnicodeRanges(hdc, glyph_set);
+    if (res == 0) {
+	status = _cairo_win32_print_gdi_error (
+	    "_cairo_win32_scaled_font_index_to_ucs4:GetFontUnicodeRanges");
+	goto exit1;
+    }
+
+    *ucs4 = (uint32_t) -1;
+    for (i = 0; i < glyph_set->cRanges; i++) {
+	num_glyphs = glyph_set->ranges[i].cGlyphs;
+
+	utf16 = _cairo_malloc_ab (num_glyphs + 1, sizeof (uint16_t));
+	if (utf16 == NULL) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto exit1;
+	}
+
+	glyph_indices = _cairo_malloc_ab (num_glyphs + 1, sizeof (WORD));
+	if (glyph_indices == NULL) {
+	    status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	    goto exit2;
+	}
+
+	for (j = 0; j < num_glyphs; j++)
+	    utf16[j] = glyph_set->ranges[i].wcLow + j;
+	utf16[j] = 0;
+
+	if (GetGlyphIndicesW (hdc, utf16, num_glyphs, glyph_indices, 0) == GDI_ERROR) {
+	    status = _cairo_win32_print_gdi_error (
+		"_cairo_win32_scaled_font_index_to_ucs4:GetGlyphIndicesW");
+	    goto exit2;
+	}
+
+	for (j = 0; j < num_glyphs; j++) {
+	    if (glyph_indices[j] == index) {
+		*ucs4 = utf16[j];
+		goto exit2;
+	    }
+	}
+
+	free (glyph_indices);
+	glyph_indices = NULL;
+	free (utf16);
+	utf16 = NULL;
+    }
+
+exit2:
+    free (glyph_indices);
+    free (utf16);
+    free (glyph_set);
+exit1:
+    cairo_win32_scaled_font_done_font (&scaled_font->base);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_is_synthetic (void	        *abstract_font,
+				       cairo_bool_t    *is_synthetic)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    cairo_status_t status;
+    int	weight;
+    cairo_bool_t bold;
+    cairo_bool_t italic;
+
+    *is_synthetic = FALSE;
+    status = _cairo_truetype_get_style (&scaled_font->base,
+					&weight,
+					&bold,
+					&italic);
+    /* If this doesn't work assume it is not synthetic to avoid
+     * unnecessary subsetting fallbacks. */
+    if (status != CAIRO_STATUS_SUCCESS)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (scaled_font->logfont.lfWeight != weight ||
+	scaled_font->logfont.lfItalic != italic)
+	*is_synthetic = TRUE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_index_to_glyph_name (void		*abstract_font,
+					      char             **glyph_names,
+					      int		 num_glyph_names,
+					      unsigned long      glyph_index,
+					      unsigned long     *glyph_array_index)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+    int i;
+
+    /* Windows puts .notdef at index 0 then numbers the remaining
+     * glyphs starting from 1 in the order they appear in the font. */
+
+    /* Find the position of .notdef in the list of glyph names. We
+     * only need to do this once per scaled font. */
+    if (! scaled_font->has_type1_notdef_index) {
+	for (i = 0; i < num_glyph_names; i++) {
+	    if (strcmp (glyph_names[i], ".notdef") == 0) {
+		scaled_font->type1_notdef_index = i;
+		scaled_font->has_type1_notdef_index = TRUE;
+		break;
+	    }
+	}
+	if (! scaled_font->has_type1_notdef_index)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+
+    /* Once we know the position of .notdef the position of any glyph
+     * in the font can easily be obtained. */
+    if (glyph_index == 0)
+	*glyph_array_index = scaled_font->type1_notdef_index;
+    else if (glyph_index <= scaled_font->type1_notdef_index)
+	*glyph_array_index = glyph_index - 1;
+    else if (glyph_index < (unsigned long)num_glyph_names)
+	*glyph_array_index = glyph_index;
+    else
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_win32_scaled_font_load_type1_data (void	            *abstract_font,
+					  long               offset,
+					  unsigned char     *buffer,
+					  unsigned long     *length)
+{
+    cairo_win32_scaled_font_t *scaled_font = abstract_font;
+
+    if (! scaled_font->is_type1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Using the tag 0 retrieves the entire font file. This works with
+     * Type 1 fonts as well as TTF/OTF fonts. */
+    return _cairo_win32_scaled_font_load_truetype_table (scaled_font,
+							 0,
+							 offset,
+							 buffer,
+							 length);
+}
+
+static cairo_surface_t *
+_compute_mask (cairo_surface_t *surface,
+	       int quality)
+{
+    cairo_image_surface_t *glyph;
+    cairo_image_surface_t *mask;
+    int i, j;
+
+    glyph = (cairo_image_surface_t *)cairo_surface_map_to_image (surface, NULL);
+    if (unlikely (glyph->base.status))
+	return &glyph->base;
+
+    if (quality == CLEARTYPE_QUALITY) {
+	/* Duplicate the green channel of a 4-channel mask into the
+	 * alpha channel, then invert the whole mask.
+	 */
+	mask = (cairo_image_surface_t *)
+	    cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+					glyph->width, glyph->height);
+	if (likely (mask->base.status == CAIRO_STATUS_SUCCESS)) {
+	    for (i = 0; i < glyph->height; i++) {
+		uint32_t *p = (uint32_t *) (glyph->data + i * glyph->stride);
+		uint32_t *q = (uint32_t *) (mask->data + i * mask->stride);
+
+		for (j = 0; j < glyph->width; j++) {
+		    *q++ = 0xffffffff ^ (*p | ((*p & 0x0000ff00) << 16));
+		    p++;
+		}
+	    }
+	}
+    } else {
+	/* Compute an alpha-mask from a using the green channel of a
+	 * (presumed monochrome) RGB24 image.
+	 */
+	mask = (cairo_image_surface_t *)
+	    cairo_image_surface_create (CAIRO_FORMAT_A8,
+					glyph->width, glyph->height);
+	if (likely (mask->base.status == CAIRO_STATUS_SUCCESS)) {
+	    for (i = 0; i < glyph->height; i++) {
+		uint32_t *p = (uint32_t *) (glyph->data + i * glyph->stride);
+		uint8_t *q = (uint8_t *) (mask->data + i * mask->stride);
+
+		for (j = 0; j < glyph->width; j++)
+		    *q++ = 255 - ((*p++ & 0x0000ff00) >> 8);
+	    }
+	}
+    }
+
+    cairo_surface_unmap_image (surface, &glyph->base);
+    return &mask->base;
+}
+
+static cairo_status_t
+_cairo_win32_scaled_font_init_glyph_surface (cairo_win32_scaled_font_t *scaled_font,
+                                             cairo_scaled_glyph_t      *scaled_glyph)
+{
+    cairo_status_t status;
+    cairo_glyph_t glyph;
+    cairo_surface_t *surface;
+    cairo_surface_t *image;
+    int width, height;
+    int x1, y1, x2, y2;
+
+    x1 = _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x);
+    y1 = _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y);
+    x2 = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x);
+    y2 = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y);
+    width = x2 - x1;
+    height = y2 - y1;
+
+    surface = cairo_win32_surface_create_with_dib (CAIRO_FORMAT_RGB24,
+						   width, height);
+    status = _cairo_surface_paint (surface, CAIRO_OPERATOR_SOURCE,
+				   &_cairo_pattern_white.base, NULL);
+    if (status)
+	goto FAIL;
+
+    glyph.index = _cairo_scaled_glyph_index (scaled_glyph);
+    glyph.x = -x1;
+    glyph.y = -y1;
+    status = _draw_glyphs_on_surface (to_win32_surface (surface),
+				      scaled_font, RGB(0,0,0),
+                                      0, 0, &glyph, 1);
+    if (status)
+	goto FAIL;
+
+    image = _compute_mask (surface, scaled_font->quality);
+    status = image->status;
+    if (status)
+	goto FAIL;
+
+    cairo_surface_set_device_offset (image, -x1, -y1);
+    _cairo_scaled_glyph_set_surface (scaled_glyph,
+                                     &scaled_font->base,
+                                     (cairo_image_surface_t *) image);
+
+  FAIL:
+    cairo_surface_destroy (surface);
+
+    return status;
+}
+
+static void
+_cairo_win32_transform_FIXED_to_fixed (cairo_matrix_t *matrix,
+                                       FIXED Fx, FIXED Fy,
+                                       cairo_fixed_t *fx, cairo_fixed_t *fy)
+{
+    double x = Fx.value + Fx.fract / 65536.0;
+    double y = Fy.value + Fy.fract / 65536.0;
+    cairo_matrix_transform_point (matrix, &x, &y);
+    *fx = _cairo_fixed_from_double (x);
+    *fy = _cairo_fixed_from_double (y);
+}
+
+static cairo_status_t
+_cairo_win32_scaled_font_init_glyph_path (cairo_win32_scaled_font_t *scaled_font,
+					  cairo_scaled_glyph_t      *scaled_glyph)
+{
+    static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, -1 } };
+    cairo_status_t status;
+    GLYPHMETRICS metrics;
+    HDC hdc;
+    DWORD bytesGlyph;
+    unsigned char *buffer, *ptr;
+    cairo_path_fixed_t *path;
+    cairo_matrix_t transform;
+    cairo_fixed_t x, y;
+
+    if (scaled_font->is_bitmap)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    hdc = _get_global_font_dc ();
+    assert (hdc != NULL);
+
+    path = _cairo_path_fixed_create ();
+    if (!path)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    if (scaled_font->base.options.hint_style == CAIRO_HINT_STYLE_NONE) {
+        status = _cairo_win32_scaled_font_select_unscaled_font (&scaled_font->base, hdc);
+        transform = scaled_font->base.scale;
+        cairo_matrix_scale (&transform, 1.0/scaled_font->em_square, 1.0/scaled_font->em_square);
+    } else {
+        status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc);
+        cairo_matrix_init_identity(&transform);
+    }
+    if (status)
+        goto CLEANUP_PATH;
+
+    bytesGlyph = GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph),
+				   GGO_NATIVE | GGO_GLYPH_INDEX,
+				   &metrics, 0, NULL, &matrix);
+
+    if (bytesGlyph == GDI_ERROR) {
+	status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_glyph_path");
+	goto CLEANUP_FONT;
+    }
+
+    ptr = buffer = _cairo_malloc (bytesGlyph);
+    if (!buffer && bytesGlyph != 0) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_FONT;
+    }
+
+    if (GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph),
+			  GGO_NATIVE | GGO_GLYPH_INDEX,
+			  &metrics, bytesGlyph, buffer, &matrix) == GDI_ERROR) {
+	status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_glyph_path");
+	goto CLEANUP_BUFFER;
+    }
+
+    while (ptr < buffer + bytesGlyph) {
+	TTPOLYGONHEADER *header = (TTPOLYGONHEADER *)ptr;
+	unsigned char *endPoly = ptr + header->cb;
+
+	ptr += sizeof (TTPOLYGONHEADER);
+
+        _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                               header->pfxStart.x,
+                                               header->pfxStart.y,
+                                               &x, &y);
+        status = _cairo_path_fixed_move_to (path, x, y);
+	if (status)
+	    goto CLEANUP_BUFFER;
+
+	while (ptr < endPoly) {
+	    TTPOLYCURVE *curve = (TTPOLYCURVE *)ptr;
+	    POINTFX *points = curve->apfx;
+	    int i;
+	    switch (curve->wType) {
+	    case TT_PRIM_LINE:
+		for (i = 0; i < curve->cpfx; i++) {
+                    _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                           points[i].x,
+                                                           points[i].y,
+                                                           &x, &y);
+		    status = _cairo_path_fixed_line_to (path, x, y);
+		    if (status)
+			goto CLEANUP_BUFFER;
+		}
+		break;
+	    case TT_PRIM_QSPLINE:
+		for (i = 0; i < curve->cpfx - 1; i++) {
+		    cairo_fixed_t p1x, p1y, p2x, p2y, cx, cy, c1x, c1y, c2x, c2y;
+		    if (! _cairo_path_fixed_get_current_point (path, &p1x, &p1y))
+			goto CLEANUP_BUFFER;
+                    _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                           points[i].x,
+                                                           points[i].y,
+                                                           &cx, &cy);
+
+		    if (i + 1 == curve->cpfx - 1) {
+                        _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                               points[i + 1].x,
+                                                               points[i + 1].y,
+                                                               &p2x, &p2y);
+		    } else {
+			/* records with more than one curve use interpolation for
+			   control points, per http://support.microsoft.com/kb/q87115/ */
+                        _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                               points[i + 1].x,
+                                                               points[i + 1].y,
+                                                               &x, &y);
+                        p2x = (cx + x) / 2;
+			p2y = (cy + y) / 2;
+		    }
+
+		    c1x = 2 * cx / 3 + p1x / 3;
+		    c1y = 2 * cy / 3 + p1y / 3;
+		    c2x = 2 * cx / 3 + p2x / 3;
+		    c2y = 2 * cy / 3 + p2y / 3;
+
+		    status = _cairo_path_fixed_curve_to (path, c1x, c1y, c2x, c2y, p2x, p2y);
+		    if (status)
+			goto CLEANUP_BUFFER;
+		}
+		break;
+	    case TT_PRIM_CSPLINE:
+		for (i = 0; i < curve->cpfx - 2; i += 2) {
+		    cairo_fixed_t x1, y1, x2, y2;
+                    _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                           points[i].x,
+                                                           points[i].y,
+                                                           &x, &y);
+                    _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                           points[i + 1].x,
+                                                           points[i + 1].y,
+                                                           &x1, &y1);
+                    _cairo_win32_transform_FIXED_to_fixed (&transform,
+                                                           points[i + 2].x,
+                                                           points[i + 2].y,
+                                                           &x2, &y2);
+		    status = _cairo_path_fixed_curve_to (path, x, y, x1, y1, x2, y2);
+		    if (status)
+			goto CLEANUP_BUFFER;
+		}
+		break;
+	    }
+	    ptr += sizeof(TTPOLYCURVE) + sizeof (POINTFX) * (curve->cpfx - 1);
+	}
+	status = _cairo_path_fixed_close_path (path);
+	if (status)
+	    goto CLEANUP_BUFFER;
+    }
+
+    _cairo_scaled_glyph_set_path (scaled_glyph,
+				  &scaled_font->base,
+				  path);
+
+ CLEANUP_BUFFER:
+    free (buffer);
+
+ CLEANUP_FONT:
+    if (scaled_font->base.options.hint_style == CAIRO_HINT_STYLE_NONE)
+	_cairo_win32_scaled_font_done_unscaled_font (&scaled_font->base);
+    else
+	cairo_win32_scaled_font_done_font (&scaled_font->base);
+
+ CLEANUP_PATH:
+    if (status != CAIRO_STATUS_SUCCESS)
+	_cairo_path_fixed_destroy (path);
+
+    return status;
+}
+
+const cairo_scaled_font_backend_t _cairo_win32_scaled_font_backend = {
+    CAIRO_FONT_TYPE_WIN32,
+    _cairo_win32_scaled_font_fini,
+    _cairo_win32_scaled_font_glyph_init,
+    NULL, /* _cairo_win32_scaled_font_text_to_glyphs, FIXME */
+    _cairo_win32_scaled_font_ucs4_to_index,
+    _cairo_win32_scaled_font_load_truetype_table,
+    _cairo_win32_scaled_font_index_to_ucs4,
+    _cairo_win32_scaled_font_is_synthetic,
+    _cairo_win32_scaled_font_index_to_glyph_name,
+    _cairo_win32_scaled_font_load_type1_data
+};
+
+/* #cairo_win32_font_face_t */
+
+typedef struct _cairo_win32_font_face cairo_win32_font_face_t;
+
+/* If hfont is non-%NULL then logfont->lfHeight must be -S for some S,
+ * logfont->lfWidth, logfont->lfEscapement, logfont->lfOrientation must
+ * all be 0, and hfont is the result of calling CreateFontIndirectW on
+ * logfont.
+ */
+struct _cairo_win32_font_face {
+    cairo_font_face_t base;
+    LOGFONTW logfont;
+    HFONT hfont;
+};
+
+/* We maintain a hash table from LOGFONT,HFONT => #cairo_font_face_t.
+ * The primary purpose of this mapping is to provide unique
+ * #cairo_font_face_t values so that our cache and mapping from
+ * #cairo_font_face_t => #cairo_scaled_font_t works. Once the
+ * corresponding #cairo_font_face_t objects fall out of downstream
+ * caches, we don't need them in this hash table anymore.
+ *
+ * Modifications to this hash table are protected by
+ * _cairo_win32_font_face_mutex.
+ */
+
+static cairo_hash_table_t *cairo_win32_font_face_hash_table = NULL;
+
+static int
+_cairo_win32_font_face_keys_equal (const void *key_a,
+				   const void *key_b);
+
+static void
+_cairo_win32_font_face_hash_table_destroy (void)
+{
+    cairo_hash_table_t *hash_table;
+
+    /* We manually acquire the lock rather than calling
+     * _cairo_win32_font_face_hash_table_lock simply to avoid creating
+     * the table only to destroy it again. */
+    CAIRO_MUTEX_LOCK (_cairo_win32_font_face_mutex);
+    hash_table = cairo_win32_font_face_hash_table;
+    cairo_win32_font_face_hash_table = NULL;
+    CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
+
+    if (hash_table != NULL)
+	_cairo_hash_table_destroy (hash_table);
+}
+
+static cairo_hash_table_t *
+_cairo_win32_font_face_hash_table_lock (void)
+{
+    CAIRO_MUTEX_LOCK (_cairo_win32_font_face_mutex);
+
+    if (unlikely (cairo_win32_font_face_hash_table == NULL))
+    {
+	cairo_win32_font_face_hash_table =
+	_cairo_hash_table_create (_cairo_win32_font_face_keys_equal);
+
+	if (unlikely (cairo_win32_font_face_hash_table == NULL)) {
+	    CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	    return NULL;
+	}
+    }
+
+    return cairo_win32_font_face_hash_table;
+}
+
+static void
+_cairo_win32_font_face_hash_table_unlock (void)
+{
+    CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
+}
+
+static cairo_bool_t
+_cairo_win32_font_face_destroy (void *abstract_face)
+{
+    cairo_win32_font_face_t *font_face = abstract_face;
+    cairo_hash_table_t *hash_table;
+
+    hash_table = _cairo_win32_font_face_hash_table_lock ();
+    /* All created objects must have been mapped in the hash table. */
+    assert (hash_table != NULL);
+
+    if (! _cairo_reference_count_dec_and_test (&font_face->base.ref_count)) {
+	/* somebody recreated the font whilst we waited for the lock */
+	_cairo_win32_font_face_hash_table_unlock ();
+	return FALSE;
+    }
+
+    /* Font faces in SUCCESS status are guaranteed to be in the
+     * hashtable. Font faces in an error status are removed from the
+     * hashtable if they are found during a lookup, thus they should
+     * only be removed if they are in the hashtable. */
+    if (likely (font_face->base.status == CAIRO_STATUS_SUCCESS) ||
+	_cairo_hash_table_lookup (hash_table, &font_face->base.hash_entry) == font_face)
+	_cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
+
+    _cairo_win32_font_face_hash_table_unlock ();
+    return TRUE;
+}
+
+static void
+_cairo_win32_font_face_init_key (cairo_win32_font_face_t *key,
+				 LOGFONTW                *logfont,
+				 HFONT                    font)
+{
+    unsigned long hash = _CAIRO_HASH_INIT_VALUE;
+
+    key->logfont = *logfont;
+    key->hfont = font;
+
+    hash = _cairo_hash_bytes (0, logfont->lfFaceName, 2*wcslen(logfont->lfFaceName));
+    hash = _cairo_hash_bytes (hash, &logfont->lfWeight, sizeof(logfont->lfWeight));
+    hash = _cairo_hash_bytes (hash, &logfont->lfItalic, sizeof(logfont->lfItalic));
+
+    key->base.hash_entry.hash = hash;
+}
+
+static int
+_cairo_win32_font_face_keys_equal (const void *key_a,
+				   const void *key_b)
+{
+    const cairo_win32_font_face_t *face_a = key_a;
+    const cairo_win32_font_face_t *face_b = key_b;
+
+    if (face_a->logfont.lfWeight         == face_b->logfont.lfWeight &&
+	face_a->logfont.lfItalic         == face_b->logfont.lfItalic &&
+	face_a->logfont.lfUnderline      == face_b->logfont.lfUnderline &&
+	face_a->logfont.lfStrikeOut      == face_b->logfont.lfStrikeOut &&
+	face_a->logfont.lfCharSet        == face_b->logfont.lfCharSet &&
+	face_a->logfont.lfOutPrecision   == face_b->logfont.lfOutPrecision &&
+	face_a->logfont.lfClipPrecision  == face_b->logfont.lfClipPrecision &&
+	face_a->logfont.lfPitchAndFamily == face_b->logfont.lfPitchAndFamily &&
+	(wcscmp (face_a->logfont.lfFaceName, face_b->logfont.lfFaceName) == 0))
+	return TRUE;
+    else
+	return FALSE;
+}
+
+/* implement the platform-specific interface */
+
+static cairo_bool_t
+_is_scale (const cairo_matrix_t *matrix, double scale)
+{
+    return matrix->xx == scale && matrix->yy == scale &&
+           matrix->xy == 0. && matrix->yx == 0. &&
+           matrix->x0 == 0. && matrix->y0 == 0.;
+}
+
+static cairo_status_t
+_cairo_win32_font_face_scaled_font_create (void			*abstract_face,
+					   const cairo_matrix_t	*font_matrix,
+					   const cairo_matrix_t	*ctm,
+					   const cairo_font_options_t *options,
+					   cairo_scaled_font_t **font)
+{
+    HFONT hfont = NULL;
+
+    cairo_win32_font_face_t *font_face = abstract_face;
+
+    if (font_face->hfont) {
+        /* Check whether it's OK to go ahead and use the font-face's HFONT. */
+        if (_is_scale (ctm, 1.) &&
+            _is_scale (font_matrix, -font_face->logfont.lfHeight)) {
+            hfont = font_face->hfont;
+        }
+    }
+
+    return _win32_scaled_font_create (&font_face->logfont,
+				      hfont,
+				      &font_face->base,
+				      font_matrix, ctm, options,
+				      font);
+}
+
+const cairo_font_face_backend_t _cairo_win32_font_face_backend = {
+    CAIRO_FONT_TYPE_WIN32,
+    _cairo_win32_font_face_create_for_toy,
+    _cairo_win32_font_face_destroy,
+    _cairo_win32_font_face_scaled_font_create
+};
+
+/**
+ * cairo_win32_font_face_create_for_logfontw_hfont:
+ * @logfont: A #LOGFONTW structure specifying the font to use.
+ *   If @font is %NULL then the lfHeight, lfWidth, lfOrientation and lfEscapement
+ *   fields of this structure are ignored. Otherwise lfWidth, lfOrientation and
+ *   lfEscapement must be zero.
+ * @font: An #HFONT that can be used when the font matrix is a scale by
+ *   -lfHeight and the CTM is identity.
+ *
+ * Creates a new font for the Win32 font backend based on a
+ * #LOGFONT. This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create().
+ * The #cairo_scaled_font_t
+ * returned from cairo_scaled_font_create() is also for the Win32 backend
+ * and can be used with functions such as cairo_win32_scaled_font_select_font().
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.6
+ **/
+cairo_font_face_t *
+cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font)
+{
+    cairo_win32_font_face_t *font_face, key;
+    cairo_hash_table_t *hash_table;
+    cairo_status_t status;
+
+    hash_table = _cairo_win32_font_face_hash_table_lock ();
+    if (unlikely (hash_table == NULL)) {
+        _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	return (cairo_font_face_t *)&_cairo_font_face_nil;
+    }
+
+    _cairo_win32_font_face_init_key (&key, logfont, font);
+
+    /* Return existing unscaled font if it exists in the hash table. */
+    font_face = _cairo_hash_table_lookup (hash_table,
+					 &key.base.hash_entry);
+    if (font_face != NULL) {
+	if (font_face->base.status == CAIRO_STATUS_SUCCESS) {
+	    cairo_font_face_reference (&font_face->base);
+	    _cairo_win32_font_face_hash_table_unlock ();
+	    return &font_face->base;
+	}
+
+	/* remove the bad font from the hash table */
+	_cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
+    }
+
+    /* Otherwise create it and insert into hash table. */
+    font_face = _cairo_malloc (sizeof (cairo_win32_font_face_t));
+    if (!font_face) {
+        _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+	goto FAIL;
+    }
+
+    _cairo_win32_font_face_init_key (font_face, logfont, font);
+    _cairo_font_face_init (&font_face->base, &_cairo_win32_font_face_backend);
+
+    assert (font_face->base.hash_entry.hash == key.base.hash_entry.hash);
+    status = _cairo_hash_table_insert (hash_table,
+				       &font_face->base.hash_entry);
+    if (unlikely (status))
+	goto FAIL;
+
+    _cairo_win32_font_face_hash_table_unlock ();
+    return &font_face->base;
+
+FAIL:
+    _cairo_win32_font_face_hash_table_unlock ();
+    return (cairo_font_face_t *)&_cairo_font_face_nil;
+}
+
+/**
+ * cairo_win32_font_face_create_for_logfontw:
+ * @logfont: A #LOGFONTW structure specifying the font to use.
+ *   The lfHeight, lfWidth, lfOrientation and lfEscapement
+ *   fields of this structure are ignored.
+ *
+ * Creates a new font for the Win32 font backend based on a
+ * #LOGFONT. This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create().
+ * The #cairo_scaled_font_t
+ * returned from cairo_scaled_font_create() is also for the Win32 backend
+ * and can be used with functions such as cairo_win32_scaled_font_select_font().
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.0
+ **/
+cairo_font_face_t *
+cairo_win32_font_face_create_for_logfontw (LOGFONTW *logfont)
+{
+    return cairo_win32_font_face_create_for_logfontw_hfont (logfont, NULL);
+}
+
+/**
+ * cairo_win32_font_face_create_for_hfont:
+ * @font: An #HFONT structure specifying the font to use.
+ *
+ * Creates a new font for the Win32 font backend based on a
+ * #HFONT. This font can then be used with
+ * cairo_set_font_face() or cairo_scaled_font_create().
+ * The #cairo_scaled_font_t
+ * returned from cairo_scaled_font_create() is also for the Win32 backend
+ * and can be used with functions such as cairo_win32_scaled_font_select_font().
+ *
+ * Return value: a newly created #cairo_font_face_t. Free with
+ *  cairo_font_face_destroy() when you are done using it.
+ *
+ * Since: 1.2
+ **/
+cairo_font_face_t *
+cairo_win32_font_face_create_for_hfont (HFONT font)
+{
+    LOGFONTW logfont;
+    GetObjectW (font, sizeof(logfont), &logfont);
+
+    if (logfont.lfEscapement != 0 || logfont.lfOrientation != 0 ||
+        logfont.lfWidth != 0) {
+        /* We can't use this font because that optimization requires that
+         * lfEscapement, lfOrientation and lfWidth be zero. */
+        font = NULL;
+    }
+
+    return cairo_win32_font_face_create_for_logfontw_hfont (&logfont, font);
+}
+
+static cairo_bool_t
+_cairo_scaled_font_is_win32 (cairo_scaled_font_t *scaled_font)
+{
+    return scaled_font->backend == &_cairo_win32_scaled_font_backend;
+}
+
+/**
+ * cairo_win32_scaled_font_select_font:
+ * @scaled_font: A #cairo_scaled_font_t from the Win32 font backend. Such an
+ *   object can be created with cairo_win32_font_face_create_for_logfontw().
+ * @hdc: a device context
+ *
+ * Selects the font into the given device context and changes the
+ * map mode and world transformation of the device context to match
+ * that of the font. This function is intended for use when using
+ * layout APIs such as Uniscribe to do text layout with the
+ * cairo font. After finishing using the device context, you must call
+ * cairo_win32_scaled_font_done_font() to release any resources allocated
+ * by this function.
+ *
+ * See cairo_win32_scaled_font_get_metrics_factor() for converting logical
+ * coordinates from the device context to font space.
+ *
+ * Normally, calls to SaveDC() and RestoreDC() would be made around
+ * the use of this function to preserve the original graphics state.
+ *
+ * Return value: %CAIRO_STATUS_SUCCESS if the operation succeeded.
+ *   otherwise an error such as %CAIRO_STATUS_NO_MEMORY and
+ *   the device context is unchanged.
+ *
+ * Since: 1.0
+ **/
+cairo_status_t
+cairo_win32_scaled_font_select_font (cairo_scaled_font_t *scaled_font,
+				     HDC                  hdc)
+{
+    cairo_status_t status;
+    HFONT hfont;
+    HFONT old_hfont = NULL;
+    int old_mode;
+
+    if (! _cairo_scaled_font_is_win32 (scaled_font)) {
+	return _cairo_error (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+    }
+
+    if (scaled_font->status)
+	return scaled_font->status;
+
+    status = _win32_scaled_font_get_scaled_hfont ((cairo_win32_scaled_font_t *)scaled_font, &hfont);
+    if (status)
+	return status;
+
+    old_hfont = SelectObject (hdc, hfont);
+    if (!old_hfont)
+	return _cairo_win32_print_gdi_error ("cairo_win32_scaled_font_select_font:SelectObject");
+
+    old_mode = SetGraphicsMode (hdc, GM_ADVANCED);
+    if (!old_mode) {
+	status = _cairo_win32_print_gdi_error ("cairo_win32_scaled_font_select_font:SetGraphicsMode");
+	SelectObject (hdc, old_hfont);
+	return status;
+    }
+
+    status = _win32_scaled_font_set_world_transform ((cairo_win32_scaled_font_t *)scaled_font, hdc);
+    if (status) {
+	SetGraphicsMode (hdc, old_mode);
+	SelectObject (hdc, old_hfont);
+	return status;
+    }
+
+    SetMapMode (hdc, MM_TEXT);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/**
+ * cairo_win32_scaled_font_done_font:
+ * @scaled_font: A scaled font from the Win32 font backend.
+ *
+ * Releases any resources allocated by cairo_win32_scaled_font_select_font()
+ *
+ * Since: 1.0
+ **/
+void
+cairo_win32_scaled_font_done_font (cairo_scaled_font_t *scaled_font)
+{
+    if (! _cairo_scaled_font_is_win32 (scaled_font)) {
+	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+    }
+}
+
+/**
+ * cairo_win32_scaled_font_get_metrics_factor:
+ * @scaled_font: a scaled font from the Win32 font backend
+ *
+ * Gets a scale factor between logical coordinates in the coordinate
+ * space used by cairo_win32_scaled_font_select_font() (that is, the
+ * coordinate system used by the Windows functions to return metrics) and
+ * font space coordinates.
+ *
+ * Return value: factor to multiply logical units by to get font space
+ *               coordinates.
+ *
+ * Since: 1.0
+ **/
+double
+cairo_win32_scaled_font_get_metrics_factor (cairo_scaled_font_t *scaled_font)
+{
+    if (! _cairo_scaled_font_is_win32 (scaled_font)) {
+	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+	return 1.;
+    }
+    return 1. / ((cairo_win32_scaled_font_t *)scaled_font)->logical_scale;
+}
+
+/**
+ * cairo_win32_scaled_font_get_logical_to_device:
+ * @scaled_font: a scaled font from the Win32 font backend
+ * @logical_to_device: matrix to return
+ *
+ * Gets the transformation mapping the logical space used by @scaled_font
+ * to device space.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_win32_scaled_font_get_logical_to_device (cairo_scaled_font_t *scaled_font,
+					       cairo_matrix_t *logical_to_device)
+{
+    cairo_win32_scaled_font_t *win_font = (cairo_win32_scaled_font_t *)scaled_font;
+    if (! _cairo_scaled_font_is_win32 (scaled_font)) {
+	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+	cairo_matrix_init_identity (logical_to_device);
+	return;
+    }
+    *logical_to_device = win_font->logical_to_device;
+}
+
+/**
+ * cairo_win32_scaled_font_get_device_to_logical:
+ * @scaled_font: a scaled font from the Win32 font backend
+ * @device_to_logical: matrix to return
+ *
+ * Gets the transformation mapping device space to the logical space
+ * used by @scaled_font.
+ *
+ * Since: 1.4
+ **/
+void
+cairo_win32_scaled_font_get_device_to_logical (cairo_scaled_font_t *scaled_font,
+					       cairo_matrix_t *device_to_logical)
+{
+    cairo_win32_scaled_font_t *win_font = (cairo_win32_scaled_font_t *)scaled_font;
+    if (! _cairo_scaled_font_is_win32 (scaled_font)) {
+	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
+	cairo_matrix_init_identity (device_to_logical);
+	return;
+    }
+    *device_to_logical = win_font->device_to_logical;
+}
+
+void
+_cairo_win32_font_reset_static_data (void)
+{
+    _cairo_win32_font_face_hash_table_destroy ();
+}
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-gdi-compositor.c b/libs/cairo-1.16.0/src/win32/cairo-win32-gdi-compositor.c
new file mode 100644
index 0000000..1d1d7f8
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-gdi-compositor.c
@@ -0,0 +1,671 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is University of Southern
+ * California.
+ *
+ * Contributor(s):
+ *	Carl D. Worth <cworth@cworth.org>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
+ *	Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation
+ */
+
+/* The original X drawing API was very restrictive in what it could handle,
+ * pixel-aligned fill/blits are all that map into Cairo's drawing model.
+ */
+
+#include "cairoint.h"
+
+#include "cairo-win32-private.h"
+
+#include "cairo-boxes-private.h"
+#include "cairo-clip-inline.h"
+#include "cairo-compositor-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-region-private.h"
+#include "cairo-surface-inline.h"
+#include "cairo-surface-offset-private.h"
+
+#if !defined(AC_SRC_OVER)
+#define AC_SRC_OVER                 0x00
+#pragma pack(1)
+typedef struct {
+    BYTE   BlendOp;
+    BYTE   BlendFlags;
+    BYTE   SourceConstantAlpha;
+    BYTE   AlphaFormat;
+}BLENDFUNCTION;
+#pragma pack()
+#endif
+
+/* for compatibility with VC++ 6 */
+#ifndef AC_SRC_ALPHA
+#define AC_SRC_ALPHA                0x01
+#endif
+
+#define PELS_72DPI  ((LONG)(72. / 0.0254))
+
+/* the low-level interface */
+
+struct fill_box {
+    HDC dc;
+    HBRUSH brush;
+};
+
+static cairo_bool_t fill_box (cairo_box_t *box, void *closure)
+{
+    struct fill_box *fb = closure;
+    RECT rect;
+
+    rect.left = _cairo_fixed_integer_part (box->p1.x);
+    rect.top = _cairo_fixed_integer_part (box->p1.y);
+    rect.right = _cairo_fixed_integer_part (box->p2.x);
+    rect.bottom = _cairo_fixed_integer_part (box->p2.y);
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return FillRect (fb->dc, &rect, fb->brush);
+}
+
+struct check_box {
+    cairo_rectangle_int_t limit;
+    int tx, ty;
+};
+
+struct copy_box {
+    cairo_rectangle_int_t limit;
+    int tx, ty;
+    HDC dst, src;
+    BLENDFUNCTION bf;
+    cairo_win32_alpha_blend_func_t alpha_blend;
+};
+
+static cairo_bool_t copy_box (cairo_box_t *box, void *closure)
+{
+    const struct copy_box *cb = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return BitBlt (cb->dst, x, y, width, height,
+		   cb->src, x + cb->tx, y + cb->ty,
+		   SRCCOPY);
+}
+
+static cairo_bool_t alpha_box (cairo_box_t *box, void *closure)
+{
+    const struct copy_box *cb = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return cb->alpha_blend (cb->dst, x, y, width, height,
+			    cb->src, x + cb->tx, y + cb->ty, width, height,
+			    cb->bf);
+}
+
+struct upload_box {
+    cairo_rectangle_int_t limit;
+    int tx, ty;
+    HDC dst;
+    BITMAPINFO bi;
+    void *data;
+};
+
+static cairo_bool_t upload_box (cairo_box_t *box, void *closure)
+{
+    const struct upload_box *cb = closure;
+    int x = _cairo_fixed_integer_part (box->p1.x);
+    int y = _cairo_fixed_integer_part (box->p1.y);
+    int width  = _cairo_fixed_integer_part (box->p2.x - box->p1.x);
+    int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y);
+    int src_height = -cb->bi.bmiHeader.biHeight;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    return StretchDIBits (cb->dst, x, y + height - 1, width, -height,
+			  x + cb->tx,  src_height - (y + cb->ty - 1),
+			  width, -height,
+			  cb->data, &cb->bi,
+			  DIB_RGB_COLORS, SRCCOPY);
+}
+
+/* the mid-level: converts boxes into drawing operations */
+
+static COLORREF color_to_rgb(const cairo_color_t *c)
+{
+    return RGB (c->red_short >> 8, c->green_short >> 8, c->blue_short >> 8);
+}
+
+static cairo_int_status_t
+fill_boxes (cairo_win32_display_surface_t	*dst,
+	    const cairo_pattern_t		*src,
+	    cairo_boxes_t			*boxes)
+{
+    const cairo_color_t *color = &((cairo_solid_pattern_t *) src)->color;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    struct fill_box fb;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if ((dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_RGB_BRUSH) == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    fb.dc = dst->win32.dc;
+    fb.brush = CreateSolidBrush (color_to_rgb(color));
+    if (!fb.brush)
+	return _cairo_win32_print_gdi_error (__FUNCTION__);
+
+    if (! _cairo_boxes_for_each_box (boxes, fill_box, &fb))
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    DeleteObject (fb.brush);
+
+    return status;
+}
+
+static cairo_bool_t source_contains_box (cairo_box_t *box, void *closure)
+{
+    struct check_box *data = closure;
+
+    /* The box is pixel-aligned so the truncation is safe. */
+    return
+	_cairo_fixed_integer_part (box->p1.x) + data->tx >= data->limit.x &&
+	_cairo_fixed_integer_part (box->p1.y) + data->ty >= data->limit.y &&
+	_cairo_fixed_integer_part (box->p2.x) + data->tx <= data->limit.x + data->limit.width &&
+	_cairo_fixed_integer_part (box->p2.y) + data->ty <= data->limit.y + data->limit.height;
+}
+
+static cairo_status_t
+copy_boxes (cairo_win32_display_surface_t *dst,
+	    const cairo_pattern_t *source,
+	    cairo_boxes_t *boxes)
+{
+    const cairo_surface_pattern_t *pattern;
+    struct copy_box cb;
+    cairo_surface_t *surface;
+    cairo_status_t status;
+    cairo_win32_surface_t *src;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    surface = _cairo_surface_get_source (pattern->surface, &cb.limit);
+    if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
+	surface = to_image_surface(surface)->parent;
+	if (surface == NULL)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+    if (surface->type != CAIRO_SURFACE_TYPE_WIN32)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix,
+						&cb.tx, &cb.ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    src = to_win32_surface(surface);
+
+    if (src->format != dst->win32.format &&
+	!(src->format == CAIRO_FORMAT_ARGB32 && dst->win32.format == CAIRO_FORMAT_RGB24))
+    {
+	/* forbid copy different surfaces unless it is from argb32 to
+	 * rgb (dropping alpha) */
+        return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+    cb.dst = dst->win32.dc;
+    cb.src = src->dc;
+
+    /* First check that the data is entirely within the image */
+    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = __cairo_surface_flush (surface, 0);
+    if (status)
+	return status;
+
+    cb.tx += cb.limit.x;
+    cb.ty += cb.limit.y;
+    status = CAIRO_STATUS_SUCCESS;
+    if (! _cairo_boxes_for_each_box (boxes, copy_box, &cb))
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_win32_display_surface_discard_fallback (dst);
+    return status;
+}
+
+static cairo_status_t
+upload_boxes (cairo_win32_display_surface_t *dst,
+	      const cairo_pattern_t *source,
+	      cairo_boxes_t *boxes)
+{
+    const cairo_surface_pattern_t *pattern;
+    struct upload_box cb;
+    cairo_surface_t *surface;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+
+    if ((dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_STRETCHDIB) == 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix,
+						&cb.tx, &cb.ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    surface = _cairo_surface_get_source (pattern->surface, &cb.limit);
+
+    /* First check that the data is entirely within the image */
+    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface->type != CAIRO_SURFACE_TYPE_IMAGE) {
+	status = _cairo_surface_acquire_source_image (surface,
+						      &image, &image_extra);
+	if (status)
+	    return status;
+    } else
+	image = to_image_surface(surface);
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (!(image->format == CAIRO_FORMAT_ARGB32 ||
+	  image->format == CAIRO_FORMAT_RGB24))
+	goto err;
+    if (image->stride != 4*image->width)
+	goto err;
+
+    cb.dst = dst->win32.dc;
+    cb.data = image->data;
+
+    cb.bi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
+    cb.bi.bmiHeader.biWidth = image->width;
+    cb.bi.bmiHeader.biHeight = -image->height;
+    cb.bi.bmiHeader.biSizeImage = 0;
+    cb.bi.bmiHeader.biXPelsPerMeter = PELS_72DPI;
+    cb.bi.bmiHeader.biYPelsPerMeter = PELS_72DPI;
+    cb.bi.bmiHeader.biPlanes = 1;
+    cb.bi.bmiHeader.biBitCount = 32;
+    cb.bi.bmiHeader.biCompression = BI_RGB;
+    cb.bi.bmiHeader.biClrUsed = 0;
+    cb.bi.bmiHeader.biClrImportant = 0;
+
+    cb.tx += cb.limit.x;
+    cb.ty += cb.limit.y;
+    status = CAIRO_STATUS_SUCCESS;
+    if (! _cairo_boxes_for_each_box (boxes, upload_box, &cb))
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_win32_display_surface_discard_fallback (dst);
+err:
+    if (&image->base != surface)
+	_cairo_surface_release_source_image (surface, image, image_extra);
+
+    return status;
+}
+
+static cairo_status_t
+alpha_blend_boxes (cairo_win32_display_surface_t *dst,
+		   const cairo_pattern_t *source,
+		   cairo_boxes_t *boxes,
+		   uint8_t alpha)
+{
+    const cairo_surface_pattern_t *pattern;
+    struct copy_box cb;
+    cairo_surface_t *surface;
+    cairo_win32_display_surface_t *src;
+    cairo_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    pattern = (const cairo_surface_pattern_t *) source;
+    surface = _cairo_surface_get_source (pattern->surface, &cb.limit);
+    if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
+	surface = to_image_surface(surface)->parent;
+	if (surface == NULL)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+    }
+    if (surface->type != CAIRO_SURFACE_TYPE_WIN32)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (! _cairo_matrix_is_integer_translation (&source->matrix,
+						&cb.tx, &cb.ty))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    src = to_win32_display_surface (surface);
+    cb.dst = dst->win32.dc;
+    cb.src = src->win32.dc;
+
+    /* First check that the data is entirely within the image */
+    if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = __cairo_surface_flush (&src->win32.base, 0);
+    if (status)
+	return status;
+
+    cb.bf.BlendOp = AC_SRC_OVER;
+    cb.bf.BlendFlags = 0;
+    cb.bf.SourceConstantAlpha = alpha;
+    cb.bf.AlphaFormat = (src->win32.format == CAIRO_FORMAT_ARGB32) ? AC_SRC_ALPHA : 0;
+    cb.alpha_blend = to_win32_device(dst->win32.base.device)->alpha_blend;
+
+    cb.tx += cb.limit.x;
+    cb.ty += cb.limit.y;
+    status = CAIRO_STATUS_SUCCESS;
+    if (! _cairo_boxes_for_each_box (boxes, alpha_box, &cb))
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    _cairo_win32_display_surface_discard_fallback (dst);
+    return status;
+}
+
+static cairo_bool_t
+can_alpha_blend (cairo_win32_display_surface_t *dst)
+{
+    if ((dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_ALPHABLEND) == 0)
+	return FALSE;
+
+    return to_win32_device(dst->win32.base.device)->alpha_blend != NULL;
+}
+
+static cairo_status_t
+draw_boxes (cairo_composite_rectangles_t *composite,
+	    cairo_boxes_t *boxes)
+{
+    cairo_win32_display_surface_t *dst = to_win32_display_surface(composite->surface);
+    cairo_operator_t op = composite->op;
+    const cairo_pattern_t *src = &composite->source_pattern.base;
+    cairo_int_status_t status;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (boxes->num_boxes == 0 && composite->is_bounded)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (!boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (op == CAIRO_OPERATOR_CLEAR)
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (op == CAIRO_OPERATOR_OVER &&
+	_cairo_pattern_is_opaque (src, &composite->bounded))
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (dst->win32.base.is_clear &&
+	(op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD))
+	op = CAIRO_OPERATOR_SOURCE;
+
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	status = CAIRO_INT_STATUS_UNSUPPORTED;
+	if (src->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	    status = copy_boxes (dst, src, boxes);
+	    if (status == CAIRO_INT_STATUS_UNSUPPORTED)
+		status = upload_boxes (dst, src, boxes);
+	} else if (src->type == CAIRO_PATTERN_TYPE_SOLID) {
+	    status = fill_boxes (dst, src, boxes);
+	}
+	return status;
+    }
+
+    if (op == CAIRO_OPERATOR_OVER && can_alpha_blend (dst))
+	return alpha_blend_boxes (dst, src, boxes, 255);
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
+
+static cairo_status_t
+opacity_boxes (cairo_composite_rectangles_t *composite,
+	       cairo_boxes_t *boxes)
+{
+    cairo_win32_display_surface_t *dst = to_win32_display_surface(composite->surface);
+    cairo_operator_t op = composite->op;
+    const cairo_pattern_t *src = &composite->source_pattern.base;
+
+    TRACE ((stderr, "%s\n", __FUNCTION__));
+    if (composite->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (boxes->num_boxes == 0 && composite->is_bounded)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (!boxes->is_pixel_aligned)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (op != CAIRO_OPERATOR_OVER)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (!can_alpha_blend (dst))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return alpha_blend_boxes (dst, src, boxes,
+			      composite->mask_pattern.solid.color.alpha_short >> 8);
+}
+
+/* high-level compositor interface */
+
+static cairo_bool_t check_blit (cairo_composite_rectangles_t *composite)
+{
+    cairo_win32_display_surface_t *dst;
+
+    if (composite->clip->path)
+	return FALSE;
+
+    dst = to_win32_display_surface (composite->surface);
+    if (dst->fallback)
+	return FALSE;
+
+    if (dst->win32.format != CAIRO_FORMAT_RGB24
+	&& dst->win32.format != CAIRO_FORMAT_ARGB32)
+	return FALSE;
+
+    if (dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_BITBLT)
+	return TRUE;
+
+    return dst->image == NULL;
+}
+
+static cairo_int_status_t
+_cairo_win32_gdi_compositor_paint (const cairo_compositor_t	*compositor,
+				   cairo_composite_rectangles_t *composite)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (check_blit (composite)) {
+	cairo_boxes_t boxes;
+
+	TRACE ((stderr, "%s\n", __FUNCTION__));
+	_cairo_clip_steal_boxes (composite->clip, &boxes);
+	status = draw_boxes (composite, &boxes);
+	_cairo_clip_unsteal_boxes (composite->clip, &boxes);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_gdi_compositor_mask (const cairo_compositor_t	*compositor,
+				  cairo_composite_rectangles_t *composite)
+{
+    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (check_blit (composite)) {
+	cairo_boxes_t boxes;
+
+	TRACE ((stderr, "%s\n", __FUNCTION__));
+	_cairo_clip_steal_boxes (composite->clip, &boxes);
+	status = opacity_boxes (composite, &boxes);
+	_cairo_clip_unsteal_boxes (composite->clip, &boxes);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_gdi_compositor_stroke (const cairo_compositor_t	*compositor,
+				    cairo_composite_rectangles_t *composite,
+				    const cairo_path_fixed_t	*path,
+				    const cairo_stroke_style_t	*style,
+				    const cairo_matrix_t	*ctm,
+				    const cairo_matrix_t	*ctm_inverse,
+				    double			 tolerance,
+				    cairo_antialias_t		 antialias)
+{
+    cairo_int_status_t status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (check_blit (composite) &&
+	_cairo_path_fixed_stroke_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	TRACE ((stderr, "%s\n", __FUNCTION__));
+	_cairo_boxes_init_with_clip (&boxes, composite->clip);
+	status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path,
+								style,
+								ctm,
+								antialias,
+								&boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = draw_boxes (composite, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_gdi_compositor_fill (const cairo_compositor_t	*compositor,
+				  cairo_composite_rectangles_t	*composite,
+				  const cairo_path_fixed_t	*path,
+				  cairo_fill_rule_t		 fill_rule,
+				  double			 tolerance,
+				  cairo_antialias_t		 antialias)
+{
+    cairo_int_status_t status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (check_blit (composite) &&
+	_cairo_path_fixed_fill_is_rectilinear (path)) {
+	cairo_boxes_t boxes;
+
+	TRACE ((stderr, "%s\n", __FUNCTION__));
+	_cairo_boxes_init_with_clip (&boxes, composite->clip);
+	status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
+							      fill_rule,
+							      antialias,
+							      &boxes);
+	if (likely (status == CAIRO_INT_STATUS_SUCCESS))
+	    status = draw_boxes (composite, &boxes);
+	_cairo_boxes_fini (&boxes);
+    }
+
+    return status;
+}
+
+static cairo_bool_t check_glyphs (cairo_composite_rectangles_t *composite,
+				  cairo_scaled_font_t *scaled_font)
+{
+    if (! _cairo_clip_is_region (composite->clip))
+	return FALSE;
+
+    if (cairo_scaled_font_get_type (scaled_font) != CAIRO_FONT_TYPE_WIN32)
+	return FALSE;
+
+    if (! _cairo_pattern_is_opaque_solid (&composite->source_pattern.base))
+	return FALSE;
+
+    return (composite->op == CAIRO_OPERATOR_CLEAR ||
+	    composite->op == CAIRO_OPERATOR_SOURCE ||
+	    composite->op == CAIRO_OPERATOR_OVER);
+}
+
+static cairo_int_status_t
+_cairo_win32_gdi_compositor_glyphs (const cairo_compositor_t	*compositor,
+				    cairo_composite_rectangles_t*composite,
+				    cairo_scaled_font_t		*scaled_font,
+				    cairo_glyph_t		*glyphs,
+				    int				 num_glyphs,
+				    cairo_bool_t		 overlap)
+{
+    cairo_int_status_t status;
+
+    status = CAIRO_INT_STATUS_UNSUPPORTED;
+    if (check_blit (composite) && check_glyphs (composite, scaled_font)) {
+	cairo_win32_display_surface_t *dst = to_win32_display_surface (composite->surface);
+
+	TRACE ((stderr, "%s\n", __FUNCTION__));
+
+	if ((dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_RGB_BRUSH) == 0)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	status = _cairo_win32_display_surface_set_clip(dst, composite->clip);
+	if (status)
+	    return status;
+
+	status = _cairo_win32_surface_emit_glyphs (&dst->win32,
+						   &composite->source_pattern.base,
+						   glyphs,
+						   num_glyphs,
+						   scaled_font,
+						   TRUE);
+
+	_cairo_win32_display_surface_unset_clip (dst);
+    }
+
+    return status;
+}
+
+const cairo_compositor_t *
+_cairo_win32_gdi_compositor_get (void)
+{
+    static cairo_atomic_once_t once = CAIRO_ATOMIC_ONCE_INIT;
+    static cairo_compositor_t compositor;
+
+    if (_cairo_atomic_init_once_enter(&once)) {
+	compositor.delegate = &_cairo_fallback_compositor;
+
+	compositor.paint  = _cairo_win32_gdi_compositor_paint;
+	compositor.mask   = _cairo_win32_gdi_compositor_mask;
+	compositor.fill   = _cairo_win32_gdi_compositor_fill;
+	compositor.stroke = _cairo_win32_gdi_compositor_stroke;
+	compositor.glyphs = _cairo_win32_gdi_compositor_glyphs;
+
+	_cairo_atomic_init_once_leave(&once);
+    }
+
+    return &compositor;
+}
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-printing-surface.c b/libs/cairo-1.16.0/src/win32/cairo-win32-printing-surface.c
new file mode 100644
index 0000000..da7357c
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-printing-surface.c
@@ -0,0 +1,2226 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2007, 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *      Adrian Johnson <ajohnson@redneon.com>
+ *      Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include "cairoint.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-paginated-private.h"
+
+#include "cairo-clip-private.h"
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-win32-private.h"
+#include "cairo-recording-surface-inline.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-image-info-private.h"
+#include "cairo-image-surface-inline.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-surface-backend-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-surface-snapshot-inline.h"
+#include "cairo-surface-subsurface-private.h"
+
+#include <windows.h>
+
+#if !defined(POSTSCRIPT_IDENTIFY)
+# define POSTSCRIPT_IDENTIFY 0x1015
+#endif
+
+#if !defined(PSIDENT_GDICENTRIC)
+# define PSIDENT_GDICENTRIC 0x0000
+#endif
+
+#if !defined(GET_PS_FEATURESETTING)
+# define GET_PS_FEATURESETTING 0x1019
+#endif
+
+#if !defined(FEATURESETTING_PSLEVEL)
+# define FEATURESETTING_PSLEVEL 0x0002
+#endif
+
+#if !defined(GRADIENT_FILL_RECT_H)
+# define GRADIENT_FILL_RECT_H 0x00
+#endif
+
+#if !defined(CHECKJPEGFORMAT)
+# define CHECKJPEGFORMAT 0x1017
+#endif
+
+#if !defined(CHECKPNGFORMAT)
+# define CHECKPNGFORMAT 0x1018
+#endif
+
+#define PELS_72DPI  ((LONG)(72. / 0.0254))
+
+static const char *_cairo_win32_printing_supported_mime_types[] =
+{
+    CAIRO_MIME_TYPE_JPEG,
+    CAIRO_MIME_TYPE_PNG,
+    NULL
+};
+
+static const cairo_surface_backend_t cairo_win32_printing_surface_backend;
+static const cairo_paginated_surface_backend_t cairo_win32_surface_paginated_backend;
+
+static void
+_cairo_win32_printing_surface_init_ps_mode (cairo_win32_printing_surface_t *surface)
+{
+    DWORD word;
+    INT ps_feature, ps_level;
+
+    word = PSIDENT_GDICENTRIC;
+    if (ExtEscape (surface->win32.dc, POSTSCRIPT_IDENTIFY, sizeof(DWORD), (char *)&word, 0, (char *)NULL) <= 0)
+	return;
+
+    ps_feature = FEATURESETTING_PSLEVEL;
+    if (ExtEscape (surface->win32.dc, GET_PS_FEATURESETTING, sizeof(INT),
+		   (char *)&ps_feature, sizeof(INT), (char *)&ps_level) <= 0)
+	return;
+
+    if (ps_level >= 3)
+	surface->win32.flags |= CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT;
+}
+
+static void
+_cairo_win32_printing_surface_init_image_support (cairo_win32_printing_surface_t *surface)
+{
+    DWORD word;
+
+    word = CHECKJPEGFORMAT;
+    if (ExtEscape(surface->win32.dc, QUERYESCSUPPORT, sizeof(word), (char *)&word, 0, (char *)NULL) > 0)
+	surface->win32.flags |= CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG;
+
+    word = CHECKPNGFORMAT;
+    if (ExtEscape(surface->win32.dc, QUERYESCSUPPORT, sizeof(word), (char *)&word, 0, (char *)NULL) > 0)
+	surface->win32.flags |= CAIRO_WIN32_SURFACE_CAN_CHECK_PNG;
+}
+
+/* When creating an EMF file, ExtTextOut with ETO_GLYPH_INDEX does not
+ * work unless the GDI function GdiInitializeLanguagePack() has been
+ * called.
+ *
+ *   http://m-a-tech.blogspot.com/2009/04/emf-buffer-idiocracy.html
+ *
+ * The only information I could find on the how to use this
+ * undocumented function is the use in:
+ *
+ * http://src.chromium.org/viewvc/chrome/trunk/src/chrome/renderer/render_process.cc?view=markup
+ *
+ * to solve the same problem. The above code first checks if LPK.DLL
+ * is already loaded. If it is not it calls
+ * GdiInitializeLanguagePack() using the prototype
+ *   BOOL GdiInitializeLanguagePack (int)
+ * and argument 0.
+ */
+static void
+_cairo_win32_printing_surface_init_language_pack (cairo_win32_printing_surface_t *surface)
+{
+    typedef BOOL (WINAPI *gdi_init_lang_pack_func_t)(int);
+    gdi_init_lang_pack_func_t gdi_init_lang_pack;
+    HMODULE module;
+
+    if (GetModuleHandleW (L"LPK.DLL"))
+	return;
+
+    module = GetModuleHandleW (L"GDI32.DLL");
+    if (module) {
+	gdi_init_lang_pack = (gdi_init_lang_pack_func_t)
+	    GetProcAddress (module, "GdiInitializeLanguagePack");
+	if (gdi_init_lang_pack)
+	    gdi_init_lang_pack (0);
+    }
+}
+
+/**
+ * _cairo_win32_printing_surface_acquire_image_pattern:
+ * @surface: the win32 printing surface
+ * @pattern: A #cairo_pattern_t of type SURFACE or RASTER_SOURCE to use as the source
+ * @extents: extents of the operation that is using this source
+ * @image_pattern: returns pattern containing acquired image. The matrix (adjusted for
+ * the device offset of raster source) is copied from the pattern.
+ * @width: returns width of the pattern
+ * @height: returns height of  pattern
+ * @image_extra: returns image extra for image type surface
+ *
+ * Acquire source surface or raster source pattern.
+ **/
+static cairo_status_t
+_cairo_win32_printing_surface_acquire_image_pattern (
+    cairo_win32_printing_surface_t  *surface,
+    const cairo_pattern_t           *pattern,
+    const cairo_rectangle_int_t     *extents,
+    cairo_surface_pattern_t         *image_pattern,
+    int                             *width,
+    int                             *height,
+    void                           **image_extra)
+{
+    cairo_status_t          status;
+    cairo_image_surface_t  *image;
+    cairo_matrix_t tm;
+    double x = 0;
+    double y = 0;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_t *surf = ((cairo_surface_pattern_t *) pattern)->surface;
+
+	status =  _cairo_surface_acquire_source_image (surf, &image, image_extra);
+	if (unlikely (status))
+	    return status;
+
+	*width = image->width;
+	*height = image->height;
+    } break;
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE: {
+	cairo_surface_t *surf;
+	cairo_box_t box;
+	cairo_rectangle_int_t rect;
+	cairo_raster_source_pattern_t *raster;
+
+	/* get the operation extents in pattern space */
+	_cairo_box_from_rectangle (&box, extents);
+	_cairo_matrix_transform_bounding_box_fixed (&pattern->matrix, &box, NULL);
+	_cairo_box_round_to_rectangle (&box, &rect);
+	surf = _cairo_raster_source_pattern_acquire (pattern, &surface->win32.base, &rect);
+	if (!surf)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	assert (_cairo_surface_is_image (surf));
+	image = (cairo_image_surface_t *) surf;
+	cairo_surface_get_device_offset (surf, &x, &y);
+
+	raster = (cairo_raster_source_pattern_t *) pattern;
+	*width = raster->extents.width;
+	*height = raster->extents.height;
+    } break;
+
+    case CAIRO_PATTERN_TYPE_SOLID:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+
+    _cairo_pattern_init_for_surface (image_pattern, &image->base);
+    image_pattern->base.extend = pattern->extend;
+    cairo_matrix_init_translate (&tm, x, y);
+    status = cairo_matrix_invert (&tm);
+    /* translation matrices are invertibile */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    image_pattern->base.matrix = pattern->matrix;
+    cairo_matrix_multiply (&image_pattern->base.matrix, &image_pattern->base.matrix, &tm);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_win32_printing_surface_release_image_pattern (cairo_win32_printing_surface_t *surface,
+						     const cairo_pattern_t          *pattern,
+						     cairo_surface_pattern_t        *image_pattern,
+						     void                           *image_extra)
+{
+    cairo_surface_t *surf = image_pattern->surface;
+
+    _cairo_pattern_fini (&image_pattern->base);
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_pattern_t *surf_pat = (cairo_surface_pattern_t *) pattern;
+	cairo_image_surface_t *image = (cairo_image_surface_t *) surf;
+	_cairo_surface_release_source_image (surf_pat->surface, image, image_extra);
+    } break;
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	_cairo_raster_source_pattern_release (pattern, surf);
+	break;
+
+    case CAIRO_PATTERN_TYPE_SOLID:
+    case CAIRO_PATTERN_TYPE_LINEAR:
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+    default:
+	ASSERT_NOT_REACHED;
+	break;
+    }
+}
+
+static cairo_int_status_t
+analyze_surface_pattern_transparency (cairo_win32_printing_surface_t *surface,
+				      const cairo_pattern_t          *pattern,
+				      const cairo_rectangle_int_t    *extents)
+{
+    cairo_surface_pattern_t image_pattern;
+    cairo_image_surface_t  *image;
+    void		   *image_extra;
+    cairo_int_status_t      status;
+    cairo_image_transparency_t transparency;
+    int pattern_width, pattern_height;
+
+    status = _cairo_win32_printing_surface_acquire_image_pattern (surface,
+								  pattern,
+								  extents,
+								  &image_pattern,
+								  &pattern_width,
+								  &pattern_height,
+								  &image_extra);
+    if (status)
+	return status;
+
+    image = (cairo_image_surface_t *)(image_pattern.surface);
+    transparency = _cairo_image_analyze_transparency (image);
+    switch (transparency) {
+    case CAIRO_IMAGE_UNKNOWN:
+	ASSERT_NOT_REACHED;
+    case CAIRO_IMAGE_IS_OPAQUE:
+	status = CAIRO_STATUS_SUCCESS;
+	break;
+
+    case CAIRO_IMAGE_HAS_BILEVEL_ALPHA:
+    case CAIRO_IMAGE_HAS_ALPHA:
+	status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+	break;
+    }
+
+    _cairo_win32_printing_surface_release_image_pattern (surface, pattern, &image_pattern, image_extra);
+
+    return status;
+}
+
+static cairo_bool_t
+surface_pattern_supported (const cairo_surface_pattern_t *pattern)
+{
+    if (_cairo_surface_is_recording (pattern->surface))
+	return TRUE;
+
+    if (pattern->surface->backend->acquire_source_image == NULL)
+    {
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+static cairo_bool_t
+pattern_supported (cairo_win32_printing_surface_t *surface, const cairo_pattern_t *pattern)
+{
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	return TRUE;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	return surface->win32.flags & CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT;
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+    case CAIRO_PATTERN_TYPE_MESH:
+	return FALSE;
+
+    case CAIRO_PATTERN_TYPE_SURFACE:
+	return surface_pattern_supported ((cairo_surface_pattern_t *) pattern);
+
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	return TRUE;
+
+    default:
+	ASSERT_NOT_REACHED;
+	return FALSE;
+    }
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_analyze_operation (cairo_win32_printing_surface_t *surface,
+                                                 cairo_operator_t                op,
+                                                 const cairo_pattern_t          *pattern,
+						 const cairo_rectangle_int_t    *extents)
+{
+    if (! pattern_supported (surface, pattern))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (!(op == CAIRO_OPERATOR_SOURCE ||
+	  op == CAIRO_OPERATOR_OVER ||
+	  op == CAIRO_OPERATOR_CLEAR))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
+	cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
+
+	if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
+	    return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
+    }
+
+    if (op == CAIRO_OPERATOR_SOURCE ||
+	op == CAIRO_OPERATOR_CLEAR)
+	return CAIRO_STATUS_SUCCESS;
+
+    /* CAIRO_OPERATOR_OVER is only supported for opaque patterns. If
+     * the pattern contains transparency, we return
+     * CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY to the analysis
+     * surface. If the analysis surface determines that there is
+     * anything drawn under this operation, a fallback image will be
+     * used. Otherwise the operation will be replayed during the
+     * render stage and we blend the transarency into the white
+     * background to convert the pattern to opaque.
+     */
+
+    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE || pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
+	return analyze_surface_pattern_transparency (surface, pattern, extents);
+
+    if (_cairo_pattern_is_opaque (pattern, NULL))
+	return CAIRO_STATUS_SUCCESS;
+    else
+	return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
+}
+
+static cairo_bool_t
+_cairo_win32_printing_surface_operation_supported (cairo_win32_printing_surface_t *surface,
+                                                   cairo_operator_t                op,
+                                                   const cairo_pattern_t          *pattern,
+						   const cairo_rectangle_int_t    *extents)
+{
+    if (_cairo_win32_printing_surface_analyze_operation (surface, op, pattern, extents) != CAIRO_INT_STATUS_UNSUPPORTED)
+	return TRUE;
+    else
+	return FALSE;
+}
+
+static void
+_cairo_win32_printing_surface_init_clear_color (cairo_win32_printing_surface_t *surface,
+						cairo_solid_pattern_t *color)
+{
+    if (surface->content == CAIRO_CONTENT_COLOR_ALPHA)
+	_cairo_pattern_init_solid (color, CAIRO_COLOR_WHITE);
+    else
+	_cairo_pattern_init_solid (color, CAIRO_COLOR_BLACK);
+}
+
+static COLORREF
+_cairo_win32_printing_surface_flatten_transparency (cairo_win32_printing_surface_t *surface,
+						    const cairo_color_t   *color)
+{
+    COLORREF c;
+    BYTE red, green, blue;
+
+    red   = color->red_short   >> 8;
+    green = color->green_short >> 8;
+    blue  = color->blue_short  >> 8;
+
+    if (!CAIRO_COLOR_IS_OPAQUE(color)) {
+	if (surface->content == CAIRO_CONTENT_COLOR_ALPHA) {
+	    /* Blend into white */
+	    uint8_t one_minus_alpha = 255 - (color->alpha_short >> 8);
+
+	    red   = (color->red_short   >> 8) + one_minus_alpha;
+	    green = (color->green_short >> 8) + one_minus_alpha;
+	    blue  = (color->blue_short  >> 8) + one_minus_alpha;
+	} else {
+	    /* Blend into black */
+	    red   = (color->red_short   >> 8);
+	    green = (color->green_short >> 8);
+	    blue  = (color->blue_short  >> 8);
+	}
+    }
+    c = RGB (red, green, blue);
+
+    return c;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_select_solid_brush (cairo_win32_printing_surface_t *surface,
+                                                  const cairo_pattern_t *source)
+{
+    cairo_solid_pattern_t *pattern = (cairo_solid_pattern_t *) source;
+    COLORREF color;
+
+    color = _cairo_win32_printing_surface_flatten_transparency (surface,
+								&pattern->color);
+    surface->brush = CreateSolidBrush (color);
+    if (!surface->brush)
+	return _cairo_win32_print_gdi_error ("_cairo_win32_surface_select_solid_brush(CreateSolidBrush)");
+    surface->old_brush = SelectObject (surface->win32.dc, surface->brush);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static void
+_cairo_win32_printing_surface_done_solid_brush (cairo_win32_printing_surface_t *surface)
+{
+    if (surface->old_brush) {
+	SelectObject (surface->win32.dc, surface->old_brush);
+	DeleteObject (surface->brush);
+	surface->old_brush = NULL;
+    }
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_get_ctm_clip_box (cairo_win32_printing_surface_t *surface,
+						RECT                  *clip)
+{
+    XFORM xform;
+
+    _cairo_matrix_to_win32_xform (&surface->ctm, &xform);
+    if (!ModifyWorldTransform (surface->win32.dc, &xform, MWT_LEFTMULTIPLY))
+	return _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_get_clip_box:ModifyWorldTransform");
+    GetClipBox (surface->win32.dc, clip);
+
+    _cairo_matrix_to_win32_xform (&surface->gdi_ctm, &xform);
+    if (!SetWorldTransform (surface->win32.dc, &xform))
+	return _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_get_clip_box:SetWorldTransform");
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_paint_solid_pattern (cairo_win32_printing_surface_t *surface,
+                                                   const cairo_pattern_t *pattern)
+{
+    RECT clip;
+    cairo_status_t status;
+
+    GetClipBox (surface->win32.dc, &clip);
+    status = _cairo_win32_printing_surface_select_solid_brush (surface, pattern);
+    if (status)
+	return status;
+
+    FillRect (surface->win32.dc, &clip, surface->brush);
+    _cairo_win32_printing_surface_done_solid_brush (surface);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_paint_recording_pattern (cairo_win32_printing_surface_t   *surface,
+						       cairo_surface_pattern_t *pattern)
+{
+    cairo_content_t old_content;
+    cairo_matrix_t old_ctm;
+    cairo_bool_t old_has_ctm;
+    cairo_rectangle_int_t recording_extents;
+    cairo_int_status_t status;
+    cairo_extend_t extend;
+    cairo_matrix_t p2d;
+    XFORM xform;
+    int x_tile, y_tile, left, right, top, bottom;
+    RECT clip;
+    cairo_recording_surface_t *recording_surface = (cairo_recording_surface_t *) pattern->surface;
+    cairo_box_t bbox;
+    cairo_surface_t *free_me = NULL;
+    cairo_bool_t is_subsurface;
+
+    extend = cairo_pattern_get_extend (&pattern->base);
+
+    p2d = pattern->base.matrix;
+    status = cairo_matrix_invert (&p2d);
+    /* _cairo_pattern_set_matrix guarantees invertibility */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    old_ctm = surface->ctm;
+    old_has_ctm = surface->has_ctm;
+    cairo_matrix_multiply (&p2d, &p2d, &surface->ctm);
+    surface->ctm = p2d;
+    SaveDC (surface->win32.dc);
+    _cairo_matrix_to_win32_xform (&p2d, &xform);
+
+    if (_cairo_surface_is_snapshot (&recording_surface->base)) {
+	free_me = _cairo_surface_snapshot_get_target (&recording_surface->base);
+	recording_surface = (cairo_recording_surface_t *) free_me;
+    }
+
+    if (recording_surface->base.backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
+	cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) recording_surface;
+
+	recording_surface = (cairo_recording_surface_t *) (sub->target);
+	recording_extents = sub->extents;
+	is_subsurface = TRUE;
+    } else {
+	status = _cairo_recording_surface_get_bbox (recording_surface, &bbox, NULL);
+	if (status)
+	    goto err;
+
+	_cairo_box_round_to_rectangle (&bbox, &recording_extents);
+    }
+
+    status = _cairo_win32_printing_surface_get_ctm_clip_box (surface, &clip);
+    if (status)
+	goto err;
+
+    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT) {
+	left = floor (clip.left / _cairo_fixed_to_double (bbox.p2.x - bbox.p1.x));
+	right = ceil (clip.right / _cairo_fixed_to_double (bbox.p2.x - bbox.p1.x));
+	top = floor (clip.top / _cairo_fixed_to_double (bbox.p2.y - bbox.p1.y));
+	bottom = ceil (clip.bottom / _cairo_fixed_to_double (bbox.p2.y - bbox.p1.y));
+    } else {
+	left = 0;
+	right = 1;
+	top = 0;
+	bottom = 1;
+    }
+
+    old_content = surface->content;
+    if (recording_surface->base.content == CAIRO_CONTENT_COLOR) {
+	surface->content = CAIRO_CONTENT_COLOR;
+	status = _cairo_win32_printing_surface_paint_solid_pattern (surface,
+								    &_cairo_pattern_black.base);
+	if (status)
+	    goto err;
+    }
+
+    for (y_tile = top; y_tile < bottom; y_tile++) {
+	for (x_tile = left; x_tile < right; x_tile++) {
+	    cairo_matrix_t m;
+	    double x, y;
+
+	    SaveDC (surface->win32.dc);
+	    m = p2d;
+	    cairo_matrix_translate (&m,
+				    x_tile*recording_extents.width,
+				    y_tile*recording_extents.height);
+	    if (extend == CAIRO_EXTEND_REFLECT) {
+		if (x_tile % 2) {
+		    cairo_matrix_translate (&m, recording_extents.width, 0);
+		    cairo_matrix_scale (&m, -1, 1);
+		}
+		if (y_tile % 2) {
+		    cairo_matrix_translate (&m, 0, recording_extents.height);
+		    cairo_matrix_scale (&m, 1, -1);
+		}
+	    }
+	    surface->ctm = m;
+	    surface->has_ctm = !_cairo_matrix_is_identity (&surface->ctm);
+
+	    /* Set clip path around bbox of the pattern. */
+	    BeginPath (surface->win32.dc);
+
+	    x = 0;
+	    y = 0;
+	    cairo_matrix_transform_point (&surface->ctm, &x, &y);
+	    MoveToEx (surface->win32.dc, (int) x, (int) y, NULL);
+
+	    x = recording_extents.width;
+	    y = 0;
+	    cairo_matrix_transform_point (&surface->ctm, &x, &y);
+	    LineTo (surface->win32.dc, (int) x, (int) y);
+
+	    x = recording_extents.width;
+	    y = recording_extents.height;
+	    cairo_matrix_transform_point (&surface->ctm, &x, &y);
+	    LineTo (surface->win32.dc, (int) x, (int) y);
+
+	    x = 0;
+	    y = recording_extents.height;
+	    cairo_matrix_transform_point (&surface->ctm, &x, &y);
+	    LineTo (surface->win32.dc, (int) x, (int) y);
+
+	    CloseFigure (surface->win32.dc);
+	    EndPath (surface->win32.dc);
+	    SelectClipPath (surface->win32.dc, RGN_AND);
+
+	    SaveDC (surface->win32.dc); /* Allow clip path to be reset during replay */
+	    status = _cairo_recording_surface_replay_region (&recording_surface->base,
+							     is_subsurface ? &recording_extents : NULL,
+							     &surface->win32.base,
+							     CAIRO_RECORDING_REGION_NATIVE);
+	    assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
+	    /* Restore both the clip save and our earlier path SaveDC */
+	    RestoreDC (surface->win32.dc, -2);
+
+	    if (status)
+		goto err;
+	}
+    }
+
+    surface->content = old_content;
+    surface->ctm = old_ctm;
+    surface->has_ctm = old_has_ctm;
+    RestoreDC (surface->win32.dc, -1);
+
+  err:
+    cairo_surface_destroy (free_me);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_check_jpeg (cairo_win32_printing_surface_t   *surface,
+					  cairo_surface_t         *source,
+					  const unsigned char    **data,
+					  unsigned long           *length,
+					  cairo_image_info_t      *info)
+{
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_int_status_t status;
+    DWORD result;
+
+    if (!(surface->win32.flags & CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JPEG,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jpeg_info (info, mime_data, mime_data_length);
+    if (status)
+	return status;
+
+    result = 0;
+    if (ExtEscape(surface->win32.dc, CHECKJPEGFORMAT, mime_data_length, (char *) mime_data,
+		  sizeof(result), (char *) &result) <= 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (result != 1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    *data = mime_data;
+    *length = mime_data_length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_check_png (cairo_win32_printing_surface_t   *surface,
+					 cairo_surface_t         *source,
+					 const unsigned char    **data,
+					 unsigned long           *length,
+					 cairo_image_info_t      *info)
+{
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+
+    cairo_int_status_t status;
+    DWORD result;
+
+    if (!(surface->win32.flags & CAIRO_WIN32_SURFACE_CAN_CHECK_PNG))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_PNG,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_png_info (info, mime_data, mime_data_length);
+    if (status)
+	return status;
+
+    result = 0;
+    if (ExtEscape(surface->win32.dc, CHECKPNGFORMAT, mime_data_length, (char *) mime_data,
+		  sizeof(result), (char *) &result) <= 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (result != 1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    *data = mime_data;
+    *length = mime_data_length;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_paint_image_pattern (cairo_win32_printing_surface_t *surface,
+						   const cairo_pattern_t          *pattern,
+						   const cairo_rectangle_int_t    *extents)
+{
+    cairo_int_status_t status;
+    cairo_surface_pattern_t image_pattern;
+    cairo_image_surface_t *image;
+    void *image_extra;
+    cairo_image_surface_t *opaque_image = NULL;
+    BITMAPINFO bi;
+    cairo_matrix_t m;
+    int oldmode;
+    XFORM xform;
+    int x_tile, y_tile, left, right, top, bottom;
+    int pattern_width, pattern_height;
+    RECT clip;
+    const cairo_color_t *background_color;
+    const unsigned char *mime_data;
+    unsigned long mime_size;
+    cairo_image_info_t mime_info;
+    cairo_bool_t use_mime;
+    DWORD mime_type;
+
+    /* If we can't use StretchDIBits with this surface, we can't do anything
+     * here.
+     */
+    if (!(surface->win32.flags & CAIRO_WIN32_SURFACE_CAN_STRETCHDIB))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    if (surface->content == CAIRO_CONTENT_COLOR_ALPHA)
+	background_color = CAIRO_COLOR_WHITE;
+    else
+	background_color = CAIRO_COLOR_BLACK;
+
+    status = _cairo_win32_printing_surface_acquire_image_pattern (surface,
+								  pattern,
+								  extents,
+								  &image_pattern,
+								  &pattern_width,
+								  &pattern_height,
+								  &image_extra);
+    if (status)
+	return status;
+
+    image = (cairo_image_surface_t *)(image_pattern.surface);
+    if (image->base.status) {
+	status = image->base.status;
+	goto CLEANUP_IMAGE;
+    }
+
+    if (image->width == 0 || image->height == 0) {
+	status = CAIRO_STATUS_SUCCESS;
+	goto CLEANUP_IMAGE;
+    }
+
+    mime_type = BI_JPEG;
+    status = _cairo_win32_printing_surface_check_jpeg (surface,
+						       image_pattern.surface,
+						       &mime_data,
+						       &mime_size,
+						       &mime_info);
+    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
+	mime_type = BI_PNG;
+	status = _cairo_win32_printing_surface_check_png (surface,
+							  image_pattern.surface,
+							  &mime_data,
+							  &mime_size,
+							  &mime_info);
+    }
+    if (_cairo_int_status_is_error (status))
+	return status;
+
+    use_mime = (status == CAIRO_INT_STATUS_SUCCESS);
+
+    if (!use_mime && image->format != CAIRO_FORMAT_RGB24) {
+	cairo_surface_t *opaque_surface;
+	cairo_surface_pattern_t image_pattern;
+	cairo_solid_pattern_t background_pattern;
+
+	opaque_surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+						     image->width,
+						     image->height);
+	if (opaque_surface->status) {
+	    status = opaque_surface->status;
+	    goto CLEANUP_OPAQUE_IMAGE;
+	}
+
+	_cairo_pattern_init_solid (&background_pattern,
+				   background_color);
+	status = _cairo_surface_paint (opaque_surface,
+				       CAIRO_OPERATOR_SOURCE,
+				       &background_pattern.base,
+				       NULL);
+	if (status)
+	    goto CLEANUP_OPAQUE_IMAGE;
+
+	_cairo_pattern_init_for_surface (&image_pattern, &image->base);
+	status = _cairo_surface_paint (opaque_surface,
+				       CAIRO_OPERATOR_OVER,
+				       &image_pattern.base,
+				       NULL);
+	_cairo_pattern_fini (&image_pattern.base);
+	if (status)
+	    goto CLEANUP_OPAQUE_IMAGE;
+
+	opaque_image = (cairo_image_surface_t *) opaque_surface;
+    } else {
+	opaque_image = image;
+    }
+
+    bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    bi.bmiHeader.biWidth = use_mime ? mime_info.width : opaque_image->width;
+    bi.bmiHeader.biHeight = use_mime ? - mime_info.height : -opaque_image->height;
+    bi.bmiHeader.biSizeImage = use_mime ? mime_size : 0;
+    bi.bmiHeader.biXPelsPerMeter = PELS_72DPI;
+    bi.bmiHeader.biYPelsPerMeter = PELS_72DPI;
+    bi.bmiHeader.biPlanes = 1;
+    bi.bmiHeader.biBitCount = 32;
+    bi.bmiHeader.biCompression = use_mime ? mime_type : BI_RGB;
+    bi.bmiHeader.biClrUsed = 0;
+    bi.bmiHeader.biClrImportant = 0;
+
+    m = image_pattern.base.matrix;
+    status = cairo_matrix_invert (&m);
+    /* _cairo_pattern_set_matrix guarantees invertibility */
+    assert (status == CAIRO_INT_STATUS_SUCCESS);
+
+    cairo_matrix_multiply (&m, &m, &surface->ctm);
+    cairo_matrix_multiply (&m, &m, &surface->gdi_ctm);
+    SaveDC (surface->win32.dc);
+    _cairo_matrix_to_win32_xform (&m, &xform);
+
+    if (! SetWorldTransform (surface->win32.dc, &xform)) {
+	status = _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_paint_image_pattern");
+	goto CLEANUP_OPAQUE_IMAGE;
+    }
+
+    oldmode = SetStretchBltMode(surface->win32.dc, HALFTONE);
+
+    GetClipBox (surface->win32.dc, &clip);
+    if (pattern->extend == CAIRO_EXTEND_REPEAT || pattern->extend == CAIRO_EXTEND_REFLECT) {
+	left = floor ( clip.left / (double) opaque_image->width);
+	right = ceil (clip.right / (double) opaque_image->width);
+	top = floor (clip.top / (double) opaque_image->height);
+	bottom = ceil (clip.bottom / (double) opaque_image->height);
+    } else {
+	left = 0;
+	right = 1;
+	top = 0;
+	bottom = 1;
+    }
+
+    for (y_tile = top; y_tile < bottom; y_tile++) {
+	for (x_tile = left; x_tile < right; x_tile++) {
+	    if (!StretchDIBits (surface->win32.dc,
+				x_tile*opaque_image->width,
+				y_tile*opaque_image->height,
+				opaque_image->width,
+				opaque_image->height,
+				0,
+				0,
+				use_mime ? mime_info.width : opaque_image->width,
+				use_mime ? mime_info.height : opaque_image->height,
+				use_mime ? mime_data : opaque_image->data,
+				&bi,
+				DIB_RGB_COLORS,
+				SRCCOPY))
+	    {
+		status = _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_paint(StretchDIBits)");
+		goto CLEANUP_OPAQUE_IMAGE;
+	    }
+	}
+    }
+    SetStretchBltMode(surface->win32.dc, oldmode);
+    RestoreDC (surface->win32.dc, -1);
+
+CLEANUP_OPAQUE_IMAGE:
+    if (opaque_image != image)
+	cairo_surface_destroy (&opaque_image->base);
+CLEANUP_IMAGE:
+    _cairo_win32_printing_surface_release_image_pattern (surface, pattern, &image_pattern, image_extra);
+
+    return status;
+}
+
+static void
+vertex_set_color (TRIVERTEX *vert, cairo_color_stop_t *color)
+{
+    /* MSDN says that the range here is 0x0000 .. 0xff00;
+     * that may well be a typo, but just chop the low bits
+     * here. */
+    vert->Alpha = 0xff00;
+    vert->Red   = color->red_short & 0xff00;
+    vert->Green = color->green_short & 0xff00;
+    vert->Blue  = color->blue_short & 0xff00;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_paint_linear_pattern (cairo_win32_printing_surface_t *surface,
+                                                    cairo_linear_pattern_t *pattern)
+{
+    TRIVERTEX *vert;
+    GRADIENT_RECT *rect;
+    RECT clip;
+    XFORM xform;
+    int i, num_stops;
+    cairo_matrix_t mat, rot;
+    double p1x, p1y, p2x, p2y, xd, yd, d, sn, cs;
+    cairo_extend_t extend;
+    int range_start, range_stop, num_ranges, num_rects, stop;
+    int total_verts, total_rects;
+    cairo_status_t status;
+
+    extend = cairo_pattern_get_extend (&pattern->base.base);
+    SaveDC (surface->win32.dc);
+
+    mat = pattern->base.base.matrix;
+    status = cairo_matrix_invert (&mat);
+    /* _cairo_pattern_set_matrix guarantees invertibility */
+    assert (status == CAIRO_STATUS_SUCCESS);
+
+    cairo_matrix_multiply (&mat, &surface->ctm, &mat);
+
+    p1x = pattern->pd1.x;
+    p1y = pattern->pd1.y;
+    p2x = pattern->pd2.x;
+    p2y = pattern->pd2.y;
+    cairo_matrix_translate (&mat, p1x, p1y);
+
+    xd = p2x - p1x;
+    yd = p2y - p1y;
+    d = sqrt (xd*xd + yd*yd);
+    sn = yd/d;
+    cs = xd/d;
+    cairo_matrix_init (&rot,
+		       cs, sn,
+		       -sn, cs,
+		        0, 0);
+    cairo_matrix_multiply (&mat, &rot, &mat);
+
+    _cairo_matrix_to_win32_xform (&mat, &xform);
+
+    if (!SetWorldTransform (surface->win32.dc, &xform))
+	return _cairo_win32_print_gdi_error ("_win32_printing_surface_paint_linear_pattern:SetWorldTransform2");
+
+    GetClipBox (surface->win32.dc, &clip);
+
+    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT) {
+	range_start = floor (clip.left / d);
+	range_stop = ceil (clip.right / d);
+    } else {
+	range_start = 0;
+	range_stop = 1;
+    }
+    num_ranges = range_stop - range_start;
+    num_stops = pattern->base.n_stops;
+    num_rects = num_stops - 1;
+
+    /* Add an extra four points and two rectangles for EXTEND_PAD */
+    vert = _cairo_malloc (sizeof (TRIVERTEX) * (num_rects*2*num_ranges + 4));
+    rect = _cairo_malloc (sizeof (GRADIENT_RECT) * (num_rects*num_ranges + 2));
+
+    for (i = 0; i < num_ranges*num_rects; i++) {
+	vert[i*2].y = (LONG) clip.top;
+	if (i%num_rects == 0) {
+	    stop = 0;
+	    if (extend == CAIRO_EXTEND_REFLECT && (range_start+(i/num_rects))%2)
+		stop = num_rects;
+	    vert[i*2].x = (LONG)(d*(range_start + i/num_rects));
+	    vertex_set_color (&vert[i*2], &pattern->base.stops[stop].color);
+	} else {
+	    vert[i*2].x = vert[i*2-1].x;
+	    vert[i*2].Red = vert[i*2-1].Red;
+	    vert[i*2].Green = vert[i*2-1].Green;
+	    vert[i*2].Blue = vert[i*2-1].Blue;
+	    vert[i*2].Alpha = vert[i*2-1].Alpha;
+	}
+
+	stop = i%num_rects + 1;
+	vert[i*2+1].x = (LONG)(d*(range_start + i/num_rects + pattern->base.stops[stop].offset));
+	vert[i*2+1].y = (LONG) clip.bottom;
+	if (extend == CAIRO_EXTEND_REFLECT && (range_start+(i/num_rects))%2)
+	    stop = num_rects - stop;
+	vertex_set_color (&vert[i*2+1], &pattern->base.stops[stop].color);
+
+	rect[i].UpperLeft = i*2;
+	rect[i].LowerRight = i*2 + 1;
+    }
+    total_verts = 2*num_ranges*num_rects;
+    total_rects = num_ranges*num_rects;
+
+    if (extend == CAIRO_EXTEND_PAD) {
+	vert[i*2].x = vert[i*2-1].x;
+	vert[i*2].y = (LONG) clip.top;
+	vert[i*2].Red = vert[i*2-1].Red;
+	vert[i*2].Green = vert[i*2-1].Green;
+	vert[i*2].Blue = vert[i*2-1].Blue;
+	vert[i*2].Alpha = 0xff00;
+	vert[i*2+1].x = clip.right;
+	vert[i*2+1].y = (LONG) clip.bottom;
+	vert[i*2+1].Red = vert[i*2-1].Red;
+	vert[i*2+1].Green = vert[i*2-1].Green;
+	vert[i*2+1].Blue = vert[i*2-1].Blue;
+	vert[i*2+1].Alpha = 0xff00;
+	rect[i].UpperLeft = i*2;
+	rect[i].LowerRight = i*2 + 1;
+
+	i++;
+
+	vert[i*2].x = clip.left;
+	vert[i*2].y = (LONG) clip.top;
+	vert[i*2].Red = vert[0].Red;
+	vert[i*2].Green = vert[0].Green;
+	vert[i*2].Blue = vert[0].Blue;
+	vert[i*2].Alpha = 0xff00;
+	vert[i*2+1].x = vert[0].x;
+	vert[i*2+1].y = (LONG) clip.bottom;
+	vert[i*2+1].Red = vert[0].Red;
+	vert[i*2+1].Green = vert[0].Green;
+	vert[i*2+1].Blue = vert[0].Blue;
+	vert[i*2+1].Alpha = 0xff00;
+	rect[i].UpperLeft = i*2;
+	rect[i].LowerRight = i*2 + 1;
+
+	total_verts += 4;
+	total_rects += 2;
+    }
+
+    if (!GradientFill (surface->win32.dc,
+		       vert, total_verts,
+		       rect, total_rects,
+		       GRADIENT_FILL_RECT_H))
+	return _cairo_win32_print_gdi_error ("_win32_printing_surface_paint_linear_pattern:GradientFill");
+
+    free (rect);
+    free (vert);
+    RestoreDC (surface->win32.dc, -1);
+
+    return 0;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_paint_pattern (cairo_win32_printing_surface_t *surface,
+                                             const cairo_pattern_t          *pattern,
+					     const cairo_rectangle_int_t    *extents)
+{
+    cairo_status_t status;
+
+    switch (pattern->type) {
+    case CAIRO_PATTERN_TYPE_SOLID:
+	status = _cairo_win32_printing_surface_paint_solid_pattern (surface, pattern);
+	if (status)
+	    return status;
+	break;
+
+    case CAIRO_PATTERN_TYPE_SURFACE: {
+	cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
+
+	if ( _cairo_surface_is_recording (surface_pattern->surface))
+	    status = _cairo_win32_printing_surface_paint_recording_pattern (surface, surface_pattern);
+	else
+	    status = _cairo_win32_printing_surface_paint_image_pattern (surface, pattern, extents);
+
+	if (status)
+	    return status;
+	break;
+    }
+    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
+	status = _cairo_win32_printing_surface_paint_image_pattern (surface, pattern, extents);
+	if (status)
+	    return status;
+	break;
+
+    case CAIRO_PATTERN_TYPE_LINEAR:
+	status = _cairo_win32_printing_surface_paint_linear_pattern (surface, (cairo_linear_pattern_t *) pattern);
+	if (status)
+	    return status;
+	break;
+
+    case CAIRO_PATTERN_TYPE_RADIAL:
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+	break;
+
+    case CAIRO_PATTERN_TYPE_MESH:
+	ASSERT_NOT_REACHED;
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+typedef struct _win32_print_path_info {
+    cairo_win32_printing_surface_t *surface;
+} win32_path_info_t;
+
+static cairo_status_t
+_cairo_win32_printing_surface_path_move_to (void *closure,
+					    const cairo_point_t *point)
+{
+    win32_path_info_t *path_info = closure;
+
+    if (path_info->surface->has_ctm) {
+	double x, y;
+
+	x = _cairo_fixed_to_double (point->x);
+	y = _cairo_fixed_to_double (point->y);
+	cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
+	MoveToEx (path_info->surface->win32.dc, (int) x, (int) y, NULL);
+    } else {
+	MoveToEx (path_info->surface->win32.dc,
+		  _cairo_fixed_integer_part (point->x),
+		  _cairo_fixed_integer_part (point->y),
+		  NULL);
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_path_line_to (void *closure,
+					    const cairo_point_t *point)
+{
+    win32_path_info_t *path_info = closure;
+
+    path_info->surface->path_empty = FALSE;
+    if (path_info->surface->has_ctm) {
+	double x, y;
+
+	x = _cairo_fixed_to_double (point->x);
+	y = _cairo_fixed_to_double (point->y);
+	cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
+	LineTo (path_info->surface->win32.dc, (int) x, (int) y);
+    } else {
+	LineTo (path_info->surface->win32.dc,
+		_cairo_fixed_integer_part (point->x),
+		_cairo_fixed_integer_part (point->y));
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_path_curve_to (void          *closure,
+                                             const cairo_point_t *b,
+                                             const cairo_point_t *c,
+                                             const cairo_point_t *d)
+{
+    win32_path_info_t *path_info = closure;
+    POINT points[3];
+
+    path_info->surface->path_empty = FALSE;
+    if (path_info->surface->has_ctm) {
+	double x, y;
+
+	x = _cairo_fixed_to_double (b->x);
+	y = _cairo_fixed_to_double (b->y);
+	cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
+	points[0].x = (LONG) x;
+	points[0].y = (LONG) y;
+
+	x = _cairo_fixed_to_double (c->x);
+	y = _cairo_fixed_to_double (c->y);
+	cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
+	points[1].x = (LONG) x;
+	points[1].y = (LONG) y;
+
+	x = _cairo_fixed_to_double (d->x);
+	y = _cairo_fixed_to_double (d->y);
+	cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
+	points[2].x = (LONG) x;
+	points[2].y = (LONG) y;
+    } else {
+	points[0].x = _cairo_fixed_integer_part (b->x);
+	points[0].y = _cairo_fixed_integer_part (b->y);
+	points[1].x = _cairo_fixed_integer_part (c->x);
+	points[1].y = _cairo_fixed_integer_part (c->y);
+	points[2].x = _cairo_fixed_integer_part (d->x);
+	points[2].y = _cairo_fixed_integer_part (d->y);
+    }
+    PolyBezierTo (path_info->surface->win32.dc, points, 3);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_path_close_path (void *closure)
+{
+    win32_path_info_t *path_info = closure;
+
+    CloseFigure (path_info->surface->win32.dc);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_emit_path (cairo_win32_printing_surface_t    *surface,
+					 const cairo_path_fixed_t *path)
+{
+    win32_path_info_t path_info;
+
+    path_info.surface = surface;
+    return _cairo_path_fixed_interpret (path,
+					_cairo_win32_printing_surface_path_move_to,
+					_cairo_win32_printing_surface_path_line_to,
+					_cairo_win32_printing_surface_path_curve_to,
+					_cairo_win32_printing_surface_path_close_path,
+					&path_info);
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_show_page (void *abstract_surface)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+
+    /* Undo both SaveDC's that we did in start_page */
+    RestoreDC (surface->win32.dc, -2);
+
+    /* Invalidate extents since the size of the next page is not known at
+     * this point.
+     */
+    surface->extents_valid = FALSE;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
+                                                   cairo_path_fixed_t *path,
+                                                   cairo_fill_rule_t   fill_rule,
+                                                   double	       tolerance,
+                                                   cairo_antialias_t   antialias)
+{
+    cairo_win32_printing_surface_t *surface = cairo_container_of (clipper,
+							 cairo_win32_printing_surface_t,
+							 clipper);
+    cairo_status_t status;
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
+	return CAIRO_STATUS_SUCCESS;
+
+    if (path == NULL) {
+	RestoreDC (surface->win32.dc, -1);
+	SaveDC (surface->win32.dc);
+
+	return CAIRO_STATUS_SUCCESS;
+    }
+
+    BeginPath (surface->win32.dc);
+    status = _cairo_win32_printing_surface_emit_path (surface, path);
+    EndPath (surface->win32.dc);
+
+    switch (fill_rule) {
+    case CAIRO_FILL_RULE_WINDING:
+	SetPolyFillMode (surface->win32.dc, WINDING);
+	break;
+    case CAIRO_FILL_RULE_EVEN_ODD:
+	SetPolyFillMode (surface->win32.dc, ALTERNATE);
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+    }
+
+    SelectClipPath (surface->win32.dc, RGN_AND);
+
+    return status;
+}
+
+static cairo_bool_t
+_cairo_win32_printing_surface_get_extents (void		          *abstract_surface,
+					   cairo_rectangle_int_t  *rectangle)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+
+    if (surface->extents_valid)
+	*rectangle = surface->win32.extents;
+
+    return surface->extents_valid;
+}
+
+static void
+_cairo_win32_printing_surface_get_font_options (void                  *abstract_surface,
+                                                cairo_font_options_t  *options)
+{
+    _cairo_font_options_init_default (options);
+
+    cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
+    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
+    cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
+    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_ON);
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_paint (void			*abstract_surface,
+                                     cairo_operator_t		 op,
+                                     const cairo_pattern_t	*source,
+				     const cairo_clip_t      *clip)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+    cairo_solid_pattern_t clear;
+    cairo_composite_rectangles_t extents;
+    cairo_status_t status;
+
+    status = _cairo_composite_rectangles_init_for_paint (&extents,
+							 &surface->win32.base,
+							 op, source, clip);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	_cairo_win32_printing_surface_init_clear_color (surface, &clear);
+	source = (cairo_pattern_t*) &clear;
+	op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_win32_printing_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_win32_printing_surface_operation_supported (surface, op, source, &extents.bounded));
+
+    status = _cairo_win32_printing_surface_paint_pattern (surface, source, &extents.bounded);
+
+  cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static int
+_cairo_win32_line_cap (cairo_line_cap_t cap)
+{
+    switch (cap) {
+    case CAIRO_LINE_CAP_BUTT:
+	return PS_ENDCAP_FLAT;
+    case CAIRO_LINE_CAP_ROUND:
+	return PS_ENDCAP_ROUND;
+    case CAIRO_LINE_CAP_SQUARE:
+	return PS_ENDCAP_SQUARE;
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+static int
+_cairo_win32_line_join (cairo_line_join_t join)
+{
+    switch (join) {
+    case CAIRO_LINE_JOIN_MITER:
+	return PS_JOIN_MITER;
+    case CAIRO_LINE_JOIN_ROUND:
+	return PS_JOIN_ROUND;
+    case CAIRO_LINE_JOIN_BEVEL:
+	return PS_JOIN_BEVEL;
+    default:
+	ASSERT_NOT_REACHED;
+	return 0;
+    }
+}
+
+static void
+_cairo_matrix_factor_out_scale (cairo_matrix_t *m, double *scale)
+{
+    double s;
+
+    s = fabs (m->xx);
+    if (fabs (m->xy) > s)
+	s = fabs (m->xy);
+    if (fabs (m->yx) > s)
+	s = fabs (m->yx);
+    if (fabs (m->yy) > s)
+	s = fabs (m->yy);
+    *scale = s;
+    s = 1.0/s;
+    cairo_matrix_scale (m, s, s);
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_stroke (void			*abstract_surface,
+                                      cairo_operator_t		 op,
+                                      const cairo_pattern_t	*source,
+                                      const cairo_path_fixed_t	*path,
+                                      const cairo_stroke_style_t *style,
+                                      const cairo_matrix_t	*stroke_ctm,
+                                      const cairo_matrix_t	*stroke_ctm_inverse,
+                                      double			tolerance,
+                                      cairo_antialias_t		antialias,
+				      const cairo_clip_t    *clip)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+    HPEN pen;
+    LOGBRUSH brush;
+    COLORREF color;
+    XFORM xform;
+    DWORD pen_style;
+    DWORD *dash_array;
+    HGDIOBJ obj;
+    unsigned int i;
+    cairo_solid_pattern_t clear;
+    cairo_matrix_t mat;
+    double scale;
+    cairo_composite_rectangles_t extents;
+
+    status = _cairo_composite_rectangles_init_for_stroke (&extents,
+							  &surface->win32.base,
+							  op, source,
+							  path, style, stroke_ctm,
+							  clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    {
+	cairo_rectangle_int_t r;
+	cairo_box_t b;
+
+	status = _cairo_path_fixed_stroke_extents (path, style,
+						   stroke_ctm, stroke_ctm_inverse,
+						   tolerance,
+						   &r);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	_cairo_box_from_rectangle (&b, &r);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents, &b);
+	if (unlikely (status))
+	    goto cleanup_composite;
+    }
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	_cairo_win32_printing_surface_init_clear_color (surface, &clear);
+	source = (cairo_pattern_t*) &clear;
+	op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	/* Win32 does not support a dash offset. */
+	if (style->num_dashes > 0 && style->dash_offset != 0.0)
+	    status = CAIRO_INT_STATUS_UNSUPPORTED;
+	else
+	    status = _cairo_win32_printing_surface_analyze_operation (surface, op, source, &extents.bounded);
+
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_win32_printing_surface_operation_supported (surface, op, source, &extents.bounded));
+    assert (!(style->num_dashes > 0 && style->dash_offset != 0.0));
+
+    cairo_matrix_multiply (&mat, stroke_ctm, &surface->ctm);
+    _cairo_matrix_factor_out_scale (&mat, &scale);
+
+    pen_style = PS_GEOMETRIC;
+    dash_array = NULL;
+    if (style->num_dashes) {
+	pen_style |= PS_USERSTYLE;
+	dash_array = calloc (sizeof (DWORD), style->num_dashes);
+	for (i = 0; i < style->num_dashes; i++) {
+	    dash_array[i] = (DWORD) (scale * style->dash[i]);
+	}
+    } else {
+	pen_style |= PS_SOLID;
+    }
+
+    SetMiterLimit (surface->win32.dc, (FLOAT) (style->miter_limit), NULL);
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
+
+
+	color = _cairo_win32_printing_surface_flatten_transparency (surface,
+								    &solid->color);
+    } else {
+	/* Color not used as the pen will only be used by WidenPath() */
+	color = RGB (0,0,0);
+    }
+    brush.lbStyle = BS_SOLID;
+    brush.lbColor = color;
+    brush.lbHatch = 0;
+    pen_style |= _cairo_win32_line_cap (style->line_cap);
+    pen_style |= _cairo_win32_line_join (style->line_join);
+    pen = ExtCreatePen(pen_style,
+		       scale * style->line_width,
+		       &brush,
+		       style->num_dashes,
+		       dash_array);
+    if (pen == NULL) {
+	status = _cairo_win32_print_gdi_error ("_win32_surface_stroke:ExtCreatePen");
+	goto cleanup_composite;
+    }
+
+    obj = SelectObject (surface->win32.dc, pen);
+    if (obj == NULL) {
+	status = _cairo_win32_print_gdi_error ("_win32_surface_stroke:SelectObject");
+	goto cleanup_composite;
+    }
+
+    BeginPath (surface->win32.dc);
+    status = _cairo_win32_printing_surface_emit_path (surface, path);
+    EndPath (surface->win32.dc);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    /*
+     * Switch to user space to set line parameters
+     */
+    SaveDC (surface->win32.dc);
+
+    _cairo_matrix_to_win32_xform (&mat, &xform);
+    xform.eDx = 0.0f;
+    xform.eDy = 0.0f;
+
+    if (!ModifyWorldTransform (surface->win32.dc, &xform, MWT_LEFTMULTIPLY)) {
+	status = _cairo_win32_print_gdi_error ("_win32_surface_stroke:SetWorldTransform");
+	goto cleanup_composite;
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	StrokePath (surface->win32.dc);
+    } else {
+	if (!WidenPath (surface->win32.dc)) {
+	    status = _cairo_win32_print_gdi_error ("_win32_surface_stroke:WidenPath");
+	    goto cleanup_composite;
+	}
+	if (!SelectClipPath (surface->win32.dc, RGN_AND)) {
+	    status = _cairo_win32_print_gdi_error ("_win32_surface_stroke:SelectClipPath");
+	    goto cleanup_composite;
+	}
+
+	/* Return to device space to paint the pattern */
+	_cairo_matrix_to_win32_xform (&surface->gdi_ctm, &xform);
+	if (!SetWorldTransform (surface->win32.dc, &xform)) {
+	    status = _cairo_win32_print_gdi_error ("_win32_surface_stroke:ModifyWorldTransform");
+	    goto cleanup_composite;
+	}
+	status = _cairo_win32_printing_surface_paint_pattern (surface, source, &extents.bounded);
+    }
+    RestoreDC (surface->win32.dc, -1);
+    DeleteObject (pen);
+    free (dash_array);
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_fill (void		        *abstract_surface,
+				    cairo_operator_t		 op,
+				    const cairo_pattern_t	*source,
+				    const cairo_path_fixed_t	*path,
+				    cairo_fill_rule_t		 fill_rule,
+				    double			 tolerance,
+				    cairo_antialias_t		 antialias,
+				    const cairo_clip_t		*clip)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+    cairo_int_status_t status;
+    cairo_solid_pattern_t clear;
+    cairo_composite_rectangles_t extents;
+
+    status = _cairo_composite_rectangles_init_for_fill (&extents,
+							&surface->win32.base,
+							op, source, path,
+							clip);
+    if (unlikely (status))
+	return status;
+
+    /* use the more accurate extents */
+    {
+	cairo_rectangle_int_t r;
+	cairo_box_t b;
+
+	_cairo_path_fixed_fill_extents (path,
+					fill_rule,
+					tolerance,
+					&r);
+
+	_cairo_box_from_rectangle (&b, &r);
+	status = _cairo_composite_rectangles_intersect_mask_extents (&extents, &b);
+	if (unlikely (status))
+	    goto cleanup_composite;
+    }
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	_cairo_win32_printing_surface_init_clear_color (surface, &clear);
+	source = (cairo_pattern_t*) &clear;
+	op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	status = _cairo_win32_printing_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    assert (_cairo_win32_printing_surface_operation_supported (surface, op, source, &extents.bounded));
+
+    surface->path_empty = TRUE;
+    BeginPath (surface->win32.dc);
+    status = _cairo_win32_printing_surface_emit_path (surface, path);
+    EndPath (surface->win32.dc);
+
+    switch (fill_rule) {
+    case CAIRO_FILL_RULE_WINDING:
+	SetPolyFillMode (surface->win32.dc, WINDING);
+	break;
+    case CAIRO_FILL_RULE_EVEN_ODD:
+	SetPolyFillMode (surface->win32.dc, ALTERNATE);
+	break;
+    default:
+	ASSERT_NOT_REACHED;
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	status = _cairo_win32_printing_surface_select_solid_brush (surface, source);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	FillPath (surface->win32.dc);
+	_cairo_win32_printing_surface_done_solid_brush (surface);
+    } else if (surface->path_empty == FALSE) {
+	SaveDC (surface->win32.dc);
+	SelectClipPath (surface->win32.dc, RGN_AND);
+	status = _cairo_win32_printing_surface_paint_pattern (surface, source, &extents.bounded);
+	RestoreDC (surface->win32.dc, -1);
+    }
+
+    fflush(stderr);
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_emit_win32_glyphs (cairo_win32_printing_surface_t	*surface,
+						 cairo_operator_t	 op,
+						 const cairo_pattern_t  *source,
+						 cairo_glyph_t		 *glyphs,
+						 int			 num_glyphs,
+						 cairo_scaled_font_t	*scaled_font,
+						 const cairo_clip_t	*clip)
+{
+    cairo_matrix_t ctm;
+    cairo_glyph_t  *unicode_glyphs;
+    cairo_scaled_font_subsets_glyph_t subset_glyph;
+    int i, first;
+    cairo_bool_t sequence_is_unicode;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+
+    /* Where possible reverse the glyph indices back to unicode
+     * characters. Strings of glyphs that could not be reversed to
+     * unicode will be printed with ETO_GLYPH_INDEX.
+     *
+     * As _cairo_win32_scaled_font_index_to_ucs4() is a slow
+     * operation, the font subsetting function
+     * _cairo_scaled_font_subsets_map_glyph() is used to obtain
+     * the unicode value because it caches the reverse mapping in
+     * the subsets.
+     */
+
+    if (surface->has_ctm) {
+	for (i = 0; i < num_glyphs; i++)
+	    cairo_matrix_transform_point (&surface->ctm, &glyphs[i].x, &glyphs[i].y);
+	cairo_matrix_multiply (&ctm, &scaled_font->ctm, &surface->ctm);
+	scaled_font = cairo_scaled_font_create (scaled_font->font_face,
+						&scaled_font->font_matrix,
+						&ctm,
+						&scaled_font->options);
+    }
+
+    unicode_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+    if (unicode_glyphs == NULL)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    memcpy (unicode_glyphs, glyphs, num_glyphs * sizeof (cairo_glyph_t));
+    for (i = 0; i < num_glyphs; i++) {
+	status = _cairo_scaled_font_subsets_map_glyph (surface->font_subsets,
+						       scaled_font,
+						       glyphs[i].index,
+						       NULL, 0,
+						       &subset_glyph);
+	if (status)
+	    goto fail;
+
+	unicode_glyphs[i].index = subset_glyph.unicode;
+    }
+
+    i = 0;
+    first = 0;
+    sequence_is_unicode = unicode_glyphs[0].index <= 0xffff;
+    while (i < num_glyphs) {
+	if (i == num_glyphs - 1 ||
+	    ((unicode_glyphs[i + 1].index < 0xffff) != sequence_is_unicode))
+	{
+	    status = _cairo_win32_surface_emit_glyphs (&surface->win32,
+						       source,
+						       sequence_is_unicode ? &unicode_glyphs[first] : &glyphs[first],
+						       i - first + 1,
+						       scaled_font,
+						       ! sequence_is_unicode);
+	    first = i + 1;
+	    if (i < num_glyphs - 1)
+		sequence_is_unicode = unicode_glyphs[i + 1].index <= 0xffff;
+	}
+	i++;
+    }
+
+fail:
+    if (surface->has_ctm)
+	cairo_scaled_font_destroy (scaled_font);
+
+    free (unicode_glyphs);
+
+    return status;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_show_glyphs (void                 *abstract_surface,
+                                           cairo_operator_t	 op,
+                                           const cairo_pattern_t *source,
+                                           cairo_glyph_t        *glyphs,
+                                           int			 num_glyphs,
+                                           cairo_scaled_font_t  *scaled_font,
+					   const cairo_clip_t	*clip)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+    cairo_status_t status = CAIRO_STATUS_SUCCESS;
+    cairo_scaled_glyph_t *scaled_glyph;
+    cairo_pattern_t *opaque = NULL;
+    int i;
+    cairo_matrix_t old_ctm;
+    cairo_bool_t old_has_ctm;
+    cairo_solid_pattern_t clear;
+    cairo_composite_rectangles_t extents;
+    cairo_bool_t overlap;
+
+    status = _cairo_composite_rectangles_init_for_glyphs (&extents,
+							  &surface->win32.base,
+							  op, source,
+							  scaled_font,
+							  glyphs, num_glyphs,
+							  clip,
+							  &overlap);
+    if (unlikely (status))
+	return status;
+
+    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
+    if (unlikely (status))
+	goto cleanup_composite;
+
+    if (op == CAIRO_OPERATOR_CLEAR) {
+	_cairo_win32_printing_surface_init_clear_color (surface, &clear);
+	source = (cairo_pattern_t*) &clear;
+	op = CAIRO_OPERATOR_SOURCE;
+    }
+
+    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
+	/* When printing bitmap fonts to a printer DC, Windows may
+	 * substitute an outline font for bitmap font. As the win32
+	 * font backend always uses a screen DC when obtaining the
+	 * font metrics the metrics of the substituted font will not
+	 * match the metrics that the win32 font backend returns.
+	 *
+	 * If we are printing a bitmap font, use fallback images to
+	 * ensure the font is not substituted.
+	 */
+#if CAIRO_HAS_WIN32_FONT
+	if (cairo_scaled_font_get_type (scaled_font) == CAIRO_FONT_TYPE_WIN32) {
+	    if (_cairo_win32_scaled_font_is_bitmap (scaled_font)) {
+		status = CAIRO_INT_STATUS_UNSUPPORTED;
+		goto cleanup_composite;
+	    } else {
+		status = _cairo_win32_printing_surface_analyze_operation (surface, op, source, &extents.bounded);
+		goto cleanup_composite;
+	    }
+	}
+#endif
+
+	/* For non win32 fonts we need to check that each glyph has a
+	 * path available. If a path is not available,
+	 * _cairo_scaled_glyph_lookup() will return
+	 * CAIRO_INT_STATUS_UNSUPPORTED and a fallback image will be
+	 * used.
+	 */
+        _cairo_scaled_font_freeze_cache (scaled_font);
+	for (i = 0; i < num_glyphs; i++) {
+	    status = _cairo_scaled_glyph_lookup (scaled_font,
+						 glyphs[i].index,
+						 CAIRO_SCALED_GLYPH_INFO_PATH,
+						 &scaled_glyph);
+	    if (status)
+                break;
+	}
+        _cairo_scaled_font_thaw_cache (scaled_font);
+	if (unlikely (status))
+	    goto cleanup_composite;
+
+	status = _cairo_win32_printing_surface_analyze_operation (surface, op, source, &extents.bounded);
+	goto cleanup_composite;
+    }
+
+    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
+	COLORREF color;
+
+	color = _cairo_win32_printing_surface_flatten_transparency (surface,
+								    &solid->color);
+	opaque = cairo_pattern_create_rgb (GetRValue (color) / 255.0,
+					   GetGValue (color) / 255.0,
+					   GetBValue (color) / 255.0);
+	if (unlikely (opaque->status)) {
+	    status = opaque->status;
+	    goto cleanup_composite;
+	}
+	source = opaque;
+    }
+
+#if CAIRO_HAS_WIN32_FONT
+    if (cairo_scaled_font_get_type (scaled_font) == CAIRO_FONT_TYPE_WIN32 &&
+	source->type == CAIRO_PATTERN_TYPE_SOLID)
+    {
+	status = _cairo_win32_printing_surface_emit_win32_glyphs (surface,
+								  op,
+								  source,
+								  glyphs,
+								  num_glyphs,
+								  scaled_font,
+								  clip);
+	goto cleanup_composite;
+    }
+#endif
+
+    SaveDC (surface->win32.dc);
+    old_ctm = surface->ctm;
+    old_has_ctm = surface->has_ctm;
+    surface->has_ctm = TRUE;
+    surface->path_empty = TRUE;
+    _cairo_scaled_font_freeze_cache (scaled_font);
+    BeginPath (surface->win32.dc);
+    for (i = 0; i < num_glyphs; i++) {
+	status = _cairo_scaled_glyph_lookup (scaled_font,
+					     glyphs[i].index,
+					     CAIRO_SCALED_GLYPH_INFO_PATH,
+					     &scaled_glyph);
+	if (status)
+	    break;
+	surface->ctm = old_ctm;
+	cairo_matrix_translate (&surface->ctm, glyphs[i].x, glyphs[i].y);
+	status = _cairo_win32_printing_surface_emit_path (surface, scaled_glyph->path);
+    }
+    EndPath (surface->win32.dc);
+    _cairo_scaled_font_thaw_cache (scaled_font);
+    surface->ctm = old_ctm;
+    surface->has_ctm = old_has_ctm;
+    if (status == CAIRO_STATUS_SUCCESS && surface->path_empty == FALSE) {
+	if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
+	    status = _cairo_win32_printing_surface_select_solid_brush (surface, source);
+	    if (unlikely (status))
+		goto cleanup_composite;
+
+	    SetPolyFillMode (surface->win32.dc, WINDING);
+	    FillPath (surface->win32.dc);
+	    _cairo_win32_printing_surface_done_solid_brush (surface);
+	} else {
+	    SelectClipPath (surface->win32.dc, RGN_AND);
+	    status = _cairo_win32_printing_surface_paint_pattern (surface, source, &extents.bounded);
+	}
+    }
+    RestoreDC (surface->win32.dc, -1);
+
+    if (opaque)
+	cairo_pattern_destroy (opaque);
+
+cleanup_composite:
+    _cairo_composite_rectangles_fini (&extents);
+    return status;
+}
+
+static const char **
+_cairo_win32_printing_surface_get_supported_mime_types (void	  *abstract_surface)
+{
+    return _cairo_win32_printing_supported_mime_types;
+}
+
+static cairo_status_t
+_cairo_win32_printing_surface_finish (void *abstract_surface)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+
+    if (surface->font_subsets != NULL)
+	_cairo_scaled_font_subsets_destroy (surface->font_subsets);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_surface_t *
+_cairo_win32_printing_surface_create_similar (void		*abstract_surface,
+					      cairo_content_t	 content,
+					      int		 width,
+					      int		 height)
+{
+    cairo_rectangle_t extents;
+
+    extents.x = extents.y = 0;
+    extents.width  = width;
+    extents.height = height;
+    return cairo_recording_surface_create (content, &extents);
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_start_page (void *abstract_surface)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+    XFORM xform;
+    double x_res, y_res;
+    cairo_matrix_t inverse_ctm;
+    cairo_status_t status;
+    RECT rect;
+
+    /* Since the page size may be changed after _show_page() and before the
+     * next drawing command, the extents are set in _start_page() and invalidated
+     * in _show_page(). The paginated surface will obtain the extents immediately
+     * after calling _show_page() and before any drawing commands. At this point
+     * the next page will not have been setup on the DC so we return invalid
+     * extents and the paginated surface will create an unbounded recording surface.
+     * Prior to replay of the record surface, the paginated surface will call
+     * _start_page and we setup the correct extents.
+     *
+     * Note that we always set the extents x,y to 0 so prevent replay from translating
+     * the coordinates of objects. Windows will clip anything outside of the page clip
+     * area.
+     */
+    GetClipBox(surface->win32.dc, &rect);
+    surface->win32.extents.x = 0;
+    surface->win32.extents.y = 0;
+    surface->win32.extents.width = rect.right;
+    surface->win32.extents.height = rect.bottom;
+    surface->extents_valid = TRUE;
+
+    SaveDC (surface->win32.dc); /* Save application context first, before doing MWT */
+
+    /* As the logical coordinates used by GDI functions (eg LineTo)
+     * are integers we need to do some additional work to prevent
+     * rounding errors. For example the obvious way to paint a recording
+     * pattern is to:
+     *
+     *   SaveDC()
+     *   transform the device context DC by the pattern to device matrix
+     *   replay the recording surface
+     *   RestoreDC()
+     *
+     * The problem here is that if the pattern to device matrix is
+     * [100 0 0 100 0 0], coordinates in the recording pattern such as
+     * (1.56, 2.23) which correspond to (156, 223) in device space
+     * will be rounded to (100, 200) due to (1.56, 2.23) being
+     * truncated to integers.
+     *
+     * This is solved by saving the current GDI CTM in surface->ctm,
+     * switch the GDI CTM to identity, and transforming all
+     * coordinates by surface->ctm before passing them to GDI. When
+     * painting a recording pattern, surface->ctm is transformed by the
+     * pattern to device matrix.
+     *
+     * For printing device contexts where 1 unit is 1 dpi, switching
+     * the GDI CTM to identity maximises the possible resolution of
+     * coordinates.
+     *
+     * If the device context is an EMF file, using an identity
+     * transform often provides insufficent resolution. The workaround
+     * is to set the GDI CTM to a scale < 1 eg [1.0/16 0 0 1/0/16 0 0]
+     * and scale the cairo CTM by [16 0 0 16 0 0]. The
+     * SetWorldTransform function call to scale the GDI CTM by 1.0/16
+     * will be recorded in the EMF followed by all the graphics
+     * functions by their coordinateds multiplied by 16.
+     *
+     * To support allowing the user to set a GDI CTM with scale < 1,
+     * we avoid switching to an identity CTM if the CTM xx and yy is < 1.
+     */
+    SetGraphicsMode (surface->win32.dc, GM_ADVANCED);
+    GetWorldTransform(surface->win32.dc, &xform);
+    if (xform.eM11 < 1 && xform.eM22 < 1) {
+	cairo_matrix_init_identity (&surface->ctm);
+	surface->gdi_ctm.xx = xform.eM11;
+	surface->gdi_ctm.xy = xform.eM21;
+	surface->gdi_ctm.yx = xform.eM12;
+	surface->gdi_ctm.yy = xform.eM22;
+	surface->gdi_ctm.x0 = xform.eDx;
+	surface->gdi_ctm.y0 = xform.eDy;
+    } else {
+	surface->ctm.xx = xform.eM11;
+	surface->ctm.xy = xform.eM21;
+	surface->ctm.yx = xform.eM12;
+	surface->ctm.yy = xform.eM22;
+	surface->ctm.x0 = xform.eDx;
+	surface->ctm.y0 = xform.eDy;
+	cairo_matrix_init_identity (&surface->gdi_ctm);
+	if (!ModifyWorldTransform (surface->win32.dc, NULL, MWT_IDENTITY))
+	    return _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_start_page:ModifyWorldTransform");
+    }
+
+    surface->has_ctm = !_cairo_matrix_is_identity (&surface->ctm);
+    surface->has_gdi_ctm = !_cairo_matrix_is_identity (&surface->gdi_ctm);
+    inverse_ctm = surface->ctm;
+    status = cairo_matrix_invert (&inverse_ctm);
+    if (status)
+	return status;
+
+    x_res = GetDeviceCaps (surface->win32.dc, LOGPIXELSX);
+    y_res = GetDeviceCaps (surface->win32.dc, LOGPIXELSY);
+    cairo_matrix_transform_distance (&inverse_ctm, &x_res, &y_res);
+    _cairo_surface_set_resolution (&surface->win32.base, x_res, y_res);
+
+    SaveDC (surface->win32.dc); /* Then save Cairo's known-good clip state, so the clip path can be reset */
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_win32_printing_surface_set_paginated_mode (void *abstract_surface,
+                                                  cairo_paginated_mode_t paginated_mode)
+{
+    cairo_win32_printing_surface_t *surface = abstract_surface;
+
+    surface->paginated_mode = paginated_mode;
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_bool_t
+_cairo_win32_printing_surface_supports_fine_grained_fallbacks (void *abstract_surface)
+{
+    return TRUE;
+}
+
+/**
+ * cairo_win32_printing_surface_create:
+ * @hdc: the DC to create a surface for
+ *
+ * Creates a cairo surface that targets the given DC.  The DC will be
+ * queried for its initial clip extents, and this will be used as the
+ * size of the cairo surface.  The DC should be a printing DC;
+ * antialiasing will be ignored, and GDI will be used as much as
+ * possible to draw to the surface.
+ *
+ * The returned surface will be wrapped using the paginated surface to
+ * provide correct complex rendering behaviour; cairo_surface_show_page() and
+ * associated methods must be used for correct output.
+ *
+ * Return value: the newly created surface
+ *
+ * Since: 1.6
+ **/
+cairo_surface_t *
+cairo_win32_printing_surface_create (HDC hdc)
+{
+    cairo_win32_printing_surface_t *surface;
+    cairo_surface_t *paginated;
+
+    surface = _cairo_malloc (sizeof (cairo_win32_printing_surface_t));
+    if (surface == NULL)
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+
+#if 0
+    if (_cairo_win32_save_initial_clip (hdc, surface) != CAIRO_STATUS_SUCCESS) {
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+#endif
+
+    _cairo_surface_clipper_init (&surface->clipper,
+				 _cairo_win32_printing_surface_clipper_intersect_clip_path);
+
+    surface->win32.format = CAIRO_FORMAT_RGB24;
+    surface->content = CAIRO_CONTENT_COLOR_ALPHA;
+
+    surface->win32.dc = hdc;
+    surface->extents_valid = FALSE;
+
+    surface->brush = NULL;
+    surface->old_brush = NULL;
+    surface->font_subsets = _cairo_scaled_font_subsets_create_scaled ();
+    if (surface->font_subsets == NULL) {
+	free (surface);
+	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
+    }
+
+    surface->win32.flags = _cairo_win32_flags_for_dc (surface->win32.dc, CAIRO_FORMAT_RGB24);
+    surface->win32.flags |= CAIRO_WIN32_SURFACE_FOR_PRINTING;
+
+    _cairo_win32_printing_surface_init_ps_mode (surface);
+    _cairo_win32_printing_surface_init_image_support (surface);
+    _cairo_win32_printing_surface_init_language_pack (surface);
+    _cairo_surface_init (&surface->win32.base,
+			 &cairo_win32_printing_surface_backend,
+			 NULL, /* device */
+                         CAIRO_CONTENT_COLOR_ALPHA,
+			 TRUE); /* is_vector */
+
+    paginated = _cairo_paginated_surface_create (&surface->win32.base,
+						 CAIRO_CONTENT_COLOR_ALPHA,
+						 &cairo_win32_surface_paginated_backend);
+
+    /* paginated keeps the only reference to surface now, drop ours */
+    cairo_surface_destroy (&surface->win32.base);
+
+    return paginated;
+}
+
+static const cairo_surface_backend_t cairo_win32_printing_surface_backend = {
+    CAIRO_SURFACE_TYPE_WIN32_PRINTING,
+    _cairo_win32_printing_surface_finish,
+
+    _cairo_default_context_create,
+
+    _cairo_win32_printing_surface_create_similar,
+    NULL, /* create similar image */
+    NULL, /* map to image */
+    NULL, /* unmap image */
+
+    _cairo_surface_default_source,
+    NULL, /* acquire_source_image */
+    NULL, /* release_source_image */
+    NULL, /* snapshot */
+
+    NULL, /* copy_page */
+    _cairo_win32_printing_surface_show_page,
+
+    _cairo_win32_printing_surface_get_extents,
+    _cairo_win32_printing_surface_get_font_options,
+
+    NULL, /* flush */
+    NULL, /* mark_dirty_rectangle */
+
+    _cairo_win32_printing_surface_paint,
+    NULL, /* mask */
+    _cairo_win32_printing_surface_stroke,
+    _cairo_win32_printing_surface_fill,
+    NULL, /* fill/stroke */
+    _cairo_win32_printing_surface_show_glyphs,
+    NULL, /* has_show_text_glyphs */
+    NULL, /* show_text_glyphs */
+    _cairo_win32_printing_surface_get_supported_mime_types,
+};
+
+static const cairo_paginated_surface_backend_t cairo_win32_surface_paginated_backend = {
+    _cairo_win32_printing_surface_start_page,
+    _cairo_win32_printing_surface_set_paginated_mode,
+    NULL, /* set_bounding_box */
+    NULL, /* _cairo_win32_printing_surface_has_fallback_images, */
+    _cairo_win32_printing_surface_supports_fine_grained_fallbacks,
+};
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-private.h b/libs/cairo-1.16.0/src/win32/cairo-win32-private.h
new file mode 100644
index 0000000..85f88a9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-private.h
@@ -0,0 +1,248 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ */
+
+#ifndef CAIRO_WIN32_PRIVATE_H
+#define CAIRO_WIN32_PRIVATE_H
+
+#include "cairo-win32.h"
+
+#include "cairoint.h"
+
+#include "cairo-device-private.h"
+#include "cairo-surface-clipper-private.h"
+#include "cairo-surface-private.h"
+
+#ifndef SHADEBLENDCAPS
+#define SHADEBLENDCAPS 120
+#endif
+#ifndef SB_NONE
+#define SB_NONE 0
+#endif
+
+#define WIN32_FONT_LOGICAL_SCALE 32
+
+/* Surface DC flag values */
+enum {
+    /* If this is a surface created for printing or not */
+    CAIRO_WIN32_SURFACE_FOR_PRINTING = (1<<0),
+
+    /* Whether the DC is a display DC or not */
+    CAIRO_WIN32_SURFACE_IS_DISPLAY = (1<<1),
+
+    /* Whether we can use BitBlt with this surface */
+    CAIRO_WIN32_SURFACE_CAN_BITBLT = (1<<2),
+
+    /* Whether we can use AlphaBlend with this surface */
+    CAIRO_WIN32_SURFACE_CAN_ALPHABLEND = (1<<3),
+
+    /* Whether we can use StretchBlt with this surface */
+    CAIRO_WIN32_SURFACE_CAN_STRETCHBLT = (1<<4),
+
+    /* Whether we can use StretchDIBits with this surface */
+    CAIRO_WIN32_SURFACE_CAN_STRETCHDIB = (1<<5),
+
+    /* Whether we can use GradientFill rectangles with this surface */
+    CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT = (1<<6),
+
+    /* Whether we can use the CHECKJPEGFORMAT escape function */
+    CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG = (1<<7),
+
+    /* Whether we can use the CHECKPNGFORMAT escape function */
+    CAIRO_WIN32_SURFACE_CAN_CHECK_PNG = (1<<8),
+
+    /* Whether we can use gdi drawing with solid rgb brush with this surface */
+    CAIRO_WIN32_SURFACE_CAN_RGB_BRUSH = (1<<9),
+};
+
+typedef struct _cairo_win32_surface {
+    cairo_surface_t base;
+
+    cairo_format_t format;
+    HDC dc;
+
+    /* Surface DC flags */
+    unsigned flags;
+
+    /* We use the x and y parts of extents for situations where
+     * we're not supposed to draw to the entire surface.
+     * For example, during a paint event a program will get
+     * a DC that has been clipped to the dirty region.
+     * A cairo surface constructed for that DC will have extents
+     * that match bounds of the clipped region.
+     */
+    cairo_rectangle_int_t extents;
+
+    /* Offset added to extents, used when the extents start with a negative
+     * offset, which can occur on Windows for, and only for, desktop DC.  This
+     * occurs when you have multiple monitors, and at least one monitor
+     * extends to the left, or above, the primaty monitor.  The primary
+     * monitor on Windows always starts with offset (0,0), and any other points
+     * to the left, or above, have negative offsets.  So the 'desktop DC' is
+     * in fact a 'virtual desktop' which can start with extents in the negative
+     * range.
+     *
+     * Why use new variables, and not the device transform?  Simply because since
+     * the device transform functions are exposed, a lot of 3rd party libraries
+     * simply overwrite those, disregarding the prior content, instead of actually
+     * adding the offset.  GTK for example simply resets the device transform of the
+     * desktop cairo surface to zero.  So make some private member variables for
+     * this, which will not be fiddled with externally.
+     */
+    int x_ofs, y_ofs;
+} cairo_win32_surface_t;
+#define to_win32_surface(S) ((cairo_win32_surface_t *)(S))
+
+typedef struct _cairo_win32_display_surface {
+    cairo_win32_surface_t win32;
+
+    /* We create off-screen surfaces as DIBs or DDBs, based on what we created
+     * originally */
+    HBITMAP bitmap;
+    cairo_bool_t is_dib;
+
+    /* Used to save the initial 1x1 monochrome bitmap for the DC to
+     * select back into the DC before deleting the DC and our
+     * bitmap. For Windows XP, this doesn't seem to be necessary
+     * ... we can just delete the DC and that automatically unselects
+     * our bitmap. But it's standard practice so apparently is needed
+     * on some versions of Windows.
+     */
+    HBITMAP saved_dc_bitmap;
+    cairo_surface_t *image;
+    cairo_surface_t *fallback;
+
+    HRGN initial_clip_rgn;
+    cairo_bool_t had_simple_clip;
+} cairo_win32_display_surface_t;
+#define to_win32_display_surface(S) ((cairo_win32_display_surface_t *)(S))
+
+typedef struct _cairo_win32_printing_surface {
+    cairo_win32_surface_t win32;
+
+    cairo_surface_clipper_t clipper;
+
+    cairo_paginated_mode_t paginated_mode;
+    cairo_content_t content;
+    cairo_bool_t path_empty;
+    cairo_bool_t has_ctm;
+    cairo_matrix_t ctm;
+    cairo_bool_t has_gdi_ctm;
+    cairo_matrix_t gdi_ctm;
+    cairo_bool_t extents_valid;
+    HBRUSH brush, old_brush;
+    cairo_scaled_font_subsets_t *font_subsets;
+} cairo_win32_printing_surface_t;
+#define to_win32_printing_surface(S) ((cairo_win32_printing_surface_t *)(S))
+
+typedef BOOL (WINAPI *cairo_win32_alpha_blend_func_t) (HDC hdcDest,
+						       int nXOriginDest,
+						       int nYOriginDest,
+						       int nWidthDest,
+						       int hHeightDest,
+						       HDC hdcSrc,
+						       int nXOriginSrc,
+						       int nYOriginSrc,
+						       int nWidthSrc,
+						       int nHeightSrc,
+						       BLENDFUNCTION blendFunction);
+
+typedef struct _cairo_win32_device {
+    cairo_device_t base;
+
+    HMODULE msimg32_dll;
+
+    const cairo_compositor_t *compositor;
+
+    cairo_win32_alpha_blend_func_t alpha_blend;
+} cairo_win32_device_t;
+#define to_win32_device(D) ((cairo_win32_device_t *)(D))
+#define to_win32_device_from_surface(S) to_win32_device(((cairo_surface_t *)(S))->device)
+
+cairo_private cairo_device_t *
+_cairo_win32_device_get (void);
+
+const cairo_compositor_t *
+_cairo_win32_gdi_compositor_get (void);
+
+cairo_status_t
+_cairo_win32_print_gdi_error (const char *context);
+
+cairo_private void
+_cairo_win32_display_surface_discard_fallback (cairo_win32_display_surface_t *surface);
+
+cairo_bool_t
+_cairo_win32_surface_get_extents (void			  *abstract_surface,
+				  cairo_rectangle_int_t   *rectangle);
+
+uint32_t
+_cairo_win32_flags_for_dc (HDC dc, cairo_format_t format);
+
+cairo_int_status_t
+_cairo_win32_surface_emit_glyphs (cairo_win32_surface_t *dst,
+				  const cairo_pattern_t *source,
+				  cairo_glyph_t	 *glyphs,
+				  int			  num_glyphs,
+				  cairo_scaled_font_t	 *scaled_font,
+				  cairo_bool_t		  glyph_indexing);
+
+static inline void
+_cairo_matrix_to_win32_xform (const cairo_matrix_t *m,
+			      XFORM *xform)
+{
+    xform->eM11 = (FLOAT) m->xx;
+    xform->eM21 = (FLOAT) m->xy;
+    xform->eM12 = (FLOAT) m->yx;
+    xform->eM22 = (FLOAT) m->yy;
+    xform->eDx = (FLOAT) m->x0;
+    xform->eDy = (FLOAT) m->y0;
+}
+
+cairo_status_t
+_cairo_win32_display_surface_set_clip (cairo_win32_display_surface_t *surface,
+				       cairo_clip_t *clip);
+
+void
+_cairo_win32_display_surface_unset_clip (cairo_win32_display_surface_t *surface);
+
+void
+_cairo_win32_debug_dump_hrgn (HRGN rgn, char *header);
+
+cairo_bool_t
+_cairo_win32_scaled_font_is_type1 (cairo_scaled_font_t *scaled_font);
+
+cairo_bool_t
+_cairo_win32_scaled_font_is_bitmap (cairo_scaled_font_t *scaled_font);
+
+#endif /* CAIRO_WIN32_PRIVATE_H */
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-surface.c b/libs/cairo-1.16.0/src/win32/cairo-win32-surface.c
new file mode 100644
index 0000000..f7285b9
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-surface.c
@@ -0,0 +1,334 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2012 Intel Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *	Stuart Parmenter <stuart@mozilla.com>
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include "cairoint.h"
+
+#include "cairo-default-context-private.h"
+#include "cairo-error-private.h"
+#include "cairo-image-surface-private.h"
+#include "cairo-paginated-private.h"
+#include "cairo-pattern-private.h"
+#include "cairo-win32-private.h"
+#include "cairo-scaled-font-subsets-private.h"
+#include "cairo-surface-fallback-private.h"
+#include "cairo-surface-backend-private.h"
+
+#include <wchar.h>
+#include <windows.h>
+
+#if defined(__MINGW32__) && !defined(ETO_PDY)
+# define ETO_PDY 0x2000
+#endif
+
+/**
+ * SECTION:cairo-win32
+ * @Title: Win32 Surfaces
+ * @Short_Description: Microsoft Windows surface support
+ * @See_Also: #cairo_surface_t
+ *
+ * The Microsoft Windows surface is used to render cairo graphics to
+ * Microsoft Windows windows, bitmaps, and printing device contexts.
+ *
+ * The surface returned by cairo_win32_printing_surface_create() is of surface
+ * type %CAIRO_SURFACE_TYPE_WIN32_PRINTING and is a multi-page vector surface
+ * type.
+ *
+ * The surface returned by the other win32 constructors is of surface type
+ * %CAIRO_SURFACE_TYPE_WIN32 and is a raster surface type.
+ **/
+
+/**
+ * CAIRO_HAS_WIN32_SURFACE:
+ *
+ * Defined if the Microsoft Windows surface backend is available.
+ * This macro can be used to conditionally compile backend-specific code.
+ *
+ * Since: 1.0
+ **/
+
+/**
+ * _cairo_win32_print_gdi_error:
+ * @context: context string to display along with the error
+ *
+ * Helper function to dump out a human readable form of the
+ * current error code.
+ *
+ * Return value: A cairo status code for the error code
+ **/
+cairo_status_t
+_cairo_win32_print_gdi_error (const char *context)
+{
+    void *lpMsgBuf;
+    DWORD last_error = GetLastError ();
+
+    if (!FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER |
+			 FORMAT_MESSAGE_FROM_SYSTEM,
+			 NULL,
+			 last_error,
+			 MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
+			 (LPWSTR) &lpMsgBuf,
+			 0, NULL)) {
+	fprintf (stderr, "%s: Unknown GDI error", context);
+    } else {
+	fprintf (stderr, "%s: %S", context, (wchar_t *)lpMsgBuf);
+
+	LocalFree (lpMsgBuf);
+    }
+
+    fflush (stderr);
+
+    return _cairo_error (CAIRO_STATUS_WIN32_GDI_ERROR);
+}
+
+cairo_bool_t
+_cairo_win32_surface_get_extents (void		          *abstract_surface,
+				  cairo_rectangle_int_t   *rectangle)
+{
+    cairo_win32_surface_t *surface = abstract_surface;
+
+    *rectangle = surface->extents;
+    return TRUE;
+}
+
+/**
+ * cairo_win32_surface_get_dc:
+ * @surface: a #cairo_surface_t
+ *
+ * Returns the HDC associated with this surface, or %NULL if none.
+ * Also returns %NULL if the surface is not a win32 surface.
+ *
+ * A call to cairo_surface_flush() is required before using the HDC to
+ * ensure that all pending drawing operations are finished and to
+ * restore any temporary modification cairo has made to its state. A
+ * call to cairo_surface_mark_dirty() is required after the state or
+ * the content of the HDC has been modified.
+ *
+ * Return value: HDC or %NULL if no HDC available.
+ *
+ * Since: 1.2
+ **/
+HDC
+cairo_win32_surface_get_dc (cairo_surface_t *surface)
+{
+    if (surface->backend->type == CAIRO_SURFACE_TYPE_WIN32)
+	return to_win32_surface(surface)->dc;
+
+    if (_cairo_surface_is_paginated (surface)) {
+	cairo_surface_t *target = _cairo_paginated_surface_get_target (surface);
+	if (target->backend->type == CAIRO_SURFACE_TYPE_WIN32_PRINTING)
+	    return to_win32_surface(target)->dc;
+    }
+
+    return NULL;
+}
+
+/**
+ * _cairo_surface_is_win32:
+ * @surface: a #cairo_surface_t
+ *
+ * Checks if a surface is an #cairo_win32_surface_t
+ *
+ * Return value: %TRUE if the surface is an win32 surface
+ **/
+static inline cairo_bool_t
+_cairo_surface_is_win32 (const cairo_surface_t *surface)
+{
+    /* _cairo_surface_nil sets a NULL backend so be safe */
+    return surface->backend && surface->backend->type == CAIRO_SURFACE_TYPE_WIN32;
+}
+
+/**
+ * cairo_win32_surface_get_image:
+ * @surface: a #cairo_surface_t
+ *
+ * Returns a #cairo_surface_t image surface that refers to the same bits
+ * as the DIB of the Win32 surface.  If the passed-in win32 surface
+ * is not a DIB surface, %NULL is returned.
+ *
+ * Return value: a #cairo_surface_t (owned by the win32 #cairo_surface_t),
+ * or %NULL if the win32 surface is not a DIB.
+ *
+ * Since: 1.4
+ **/
+cairo_surface_t *
+cairo_win32_surface_get_image (cairo_surface_t *surface)
+{
+
+    if (! _cairo_surface_is_win32 (surface)) {
+        return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
+    }
+
+    GdiFlush();
+    return to_win32_display_surface(surface)->image;
+}
+
+#define STACK_GLYPH_SIZE 256
+cairo_int_status_t
+_cairo_win32_surface_emit_glyphs (cairo_win32_surface_t *dst,
+				  const cairo_pattern_t *source,
+				  cairo_glyph_t	 *glyphs,
+				  int			  num_glyphs,
+				  cairo_scaled_font_t	 *scaled_font,
+				  cairo_bool_t		  glyph_indexing)
+{
+#if CAIRO_HAS_WIN32_FONT
+    WORD glyph_buf_stack[STACK_GLYPH_SIZE];
+    WORD *glyph_buf = glyph_buf_stack;
+    int dxy_buf_stack[2 * STACK_GLYPH_SIZE];
+    int *dxy_buf = dxy_buf_stack;
+
+    BOOL win_result = 0;
+    int i, j;
+
+    cairo_solid_pattern_t *solid_pattern;
+    COLORREF color;
+
+    cairo_matrix_t device_to_logical;
+
+    int start_x, start_y;
+    double user_x, user_y;
+    int logical_x, logical_y;
+    unsigned int glyph_index_option;
+
+    /* We can only handle win32 fonts */
+    assert (cairo_scaled_font_get_type (scaled_font) == CAIRO_FONT_TYPE_WIN32);
+
+    /* We can only handle opaque solid color sources and destinations */
+    assert (_cairo_pattern_is_opaque_solid(source));
+    assert (dst->format == CAIRO_FORMAT_RGB24);
+
+    solid_pattern = (cairo_solid_pattern_t *)source;
+    color = RGB(((int)solid_pattern->color.red_short) >> 8,
+		((int)solid_pattern->color.green_short) >> 8,
+		((int)solid_pattern->color.blue_short) >> 8);
+
+    cairo_win32_scaled_font_get_device_to_logical(scaled_font, &device_to_logical);
+
+    SaveDC(dst->dc);
+
+    cairo_win32_scaled_font_select_font(scaled_font, dst->dc);
+    SetTextColor(dst->dc, color);
+    SetTextAlign(dst->dc, TA_BASELINE | TA_LEFT);
+    SetBkMode(dst->dc, TRANSPARENT);
+
+    if (num_glyphs > STACK_GLYPH_SIZE) {
+	glyph_buf = (WORD *) _cairo_malloc_ab (num_glyphs, sizeof(WORD));
+        dxy_buf = (int *) _cairo_malloc_abc (num_glyphs, sizeof(int), 2);
+    }
+
+    /* It is vital that dx values for dxy_buf are calculated from the delta of
+     * _logical_ x coordinates (not user x coordinates) or else the sum of all
+     * previous dx values may start to diverge from the current glyph's x
+     * coordinate due to accumulated rounding error. As a result strings could
+     * be painted shorter or longer than expected. */
+
+    user_x = glyphs[0].x;
+    user_y = glyphs[0].y;
+
+    cairo_matrix_transform_point(&device_to_logical,
+                                 &user_x, &user_y);
+
+    logical_x = _cairo_lround (user_x);
+    logical_y = _cairo_lround (user_y);
+
+    start_x = logical_x;
+    start_y = logical_y;
+
+    for (i = 0, j = 0; i < num_glyphs; ++i, j = 2 * i) {
+        glyph_buf[i] = (WORD) glyphs[i].index;
+        if (i == num_glyphs - 1) {
+            dxy_buf[j] = 0;
+            dxy_buf[j+1] = 0;
+        } else {
+            double next_user_x = glyphs[i+1].x;
+            double next_user_y = glyphs[i+1].y;
+            int next_logical_x, next_logical_y;
+
+            cairo_matrix_transform_point(&device_to_logical,
+                                         &next_user_x, &next_user_y);
+
+            next_logical_x = _cairo_lround (next_user_x);
+            next_logical_y = _cairo_lround (next_user_y);
+
+            dxy_buf[j] = _cairo_lround (next_logical_x - logical_x);
+            dxy_buf[j+1] = _cairo_lround (next_logical_y - logical_y);
+
+            logical_x = next_logical_x;
+            logical_y = next_logical_y;
+        }
+    }
+
+    if (glyph_indexing)
+	glyph_index_option = ETO_GLYPH_INDEX;
+    else
+	glyph_index_option = 0;
+
+    win_result = ExtTextOutW(dst->dc,
+                             start_x,
+                             start_y,
+                             glyph_index_option | ETO_PDY,
+                             NULL,
+                             glyph_buf,
+                             num_glyphs,
+                             dxy_buf);
+    if (!win_result) {
+        _cairo_win32_print_gdi_error("_cairo_win32_surface_show_glyphs(ExtTextOutW failed)");
+    }
+
+    RestoreDC(dst->dc, -1);
+
+    if (glyph_buf != glyph_buf_stack) {
+	free(glyph_buf);
+        free(dxy_buf);
+    }
+    return (win_result) ? CAIRO_STATUS_SUCCESS : CAIRO_INT_STATUS_UNSUPPORTED;
+#else
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+#endif
+}
+#undef STACK_GLYPH_SIZE
diff --git a/libs/cairo-1.16.0/src/win32/cairo-win32-system.c b/libs/cairo-1.16.0/src/win32/cairo-win32-system.c
new file mode 100644
index 0000000..8785530
--- /dev/null
+++ b/libs/cairo-1.16.0/src/win32/cairo-win32-system.c
@@ -0,0 +1,89 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Contributor(s):
+ *	Owen Taylor <otaylor@redhat.com>
+ *	Stuart Parmenter <stuart@mozilla.com>
+ *	Vladimir Vukicevic <vladimir@pobox.com>
+ */
+
+/* This file should include code that is system-specific, not
+ * feature-specific.  For example, the DLL initialization/finalization
+ * code on Win32 or OS/2 must live here (not in cairo-whatever-surface.c).
+ * Same about possible ELF-specific code.
+ *
+ * And no other function should live here.
+ */
+
+
+#include "cairoint.h"
+
+#if CAIRO_MUTEX_IMPL_WIN32
+#if !CAIRO_WIN32_STATIC_BUILD
+
+#define WIN32_LEAN_AND_MEAN
+/* We require Windows 2000 features such as ETO_PDY */
+#if !defined(WINVER) || (WINVER < 0x0500)
+# define WINVER 0x0500
+#endif
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
+# define _WIN32_WINNT 0x0500
+#endif
+
+#include <windows.h>
+
+/* declare to avoid "no previous prototype for 'DllMain'" warning */
+BOOL WINAPI
+DllMain (HINSTANCE hinstDLL,
+         DWORD     fdwReason,
+         LPVOID    lpvReserved);
+
+BOOL WINAPI
+DllMain (HINSTANCE hinstDLL,
+         DWORD     fdwReason,
+         LPVOID    lpvReserved)
+{
+    switch (fdwReason) {
+        case DLL_PROCESS_ATTACH:
+            CAIRO_MUTEX_INITIALIZE ();
+            break;
+
+        case DLL_PROCESS_DETACH:
+            CAIRO_MUTEX_FINALIZE ();
+            break;
+    }
+
+    return TRUE;
+}
+
+#endif
+#endif