add cairo

1 files changed, 182 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/gl-device-release.c b/libs/cairo-1.16.0/test/gl-device-release.c
new file mode 100644
index 0000000..7f554be
--- /dev/null
+++ b/libs/cairo-1.16.0/test/gl-device-release.c
@@ -0,0 +1,182 @@
+/*
+ * Copyright © 2012 Igalia S.L.
+ * Copyright © 2009 Eric Anholt
+ * Copyright © 2009 Chris Wilson
+ * Copyright © 2005 Red Hat, Inc
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * IGALIA S.L. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Martin Robinson <mrobinson@igalia.com>
+ */
+
+#include "cairo-test.h"
+#include <cairo-gl.h>
+#include <assert.h>
+
+static Window
+create_test_window (Display *display,
+		    GLXContext glx_context,
+		    XVisualInfo *visual_info)
+{
+    Colormap colormap;
+    XSetWindowAttributes window_attributes;
+    Window window = None;
+
+    colormap = XCreateColormap (display,
+			    RootWindow (display, visual_info->screen),
+			    visual_info->visual,
+			    AllocNone);
+    window_attributes.colormap = colormap;
+    window_attributes.border_pixel = 0;
+    window = XCreateWindow (display, RootWindow (display, visual_info->screen),
+			    -1, -1, 1, 1, 0,
+			    visual_info->depth,
+			    InputOutput,
+			    visual_info->visual,
+			    CWBorderPixel | CWColormap, &window_attributes);
+    XFreeColormap (display, colormap);
+
+    XFlush (display);
+    return window;
+}
+
+static cairo_bool_t
+multithread_makecurrent_available (Display *display)
+{
+    const char *extensions = glXQueryExtensionsString (display,
+						       DefaultScreen (display));
+    return !! strstr(extensions, "GLX_MESA_multithread_makecurrent");
+}
+
+static void
+draw_to_surface (cairo_surface_t *surface)
+{
+    cairo_t *cr = cairo_create (surface);
+    cairo_paint (cr);
+    cairo_destroy (cr);
+}
+
+static cairo_test_status_t
+preamble (cairo_test_context_t *test_ctx)
+{
+    int rgba_attribs[] = {
+	GLX_RGBA,
+	GLX_RED_SIZE, 1,
+	GLX_GREEN_SIZE, 1,
+	GLX_BLUE_SIZE, 1,
+	GLX_ALPHA_SIZE, 1,
+	GLX_DOUBLEBUFFER,
+	None
+    };
+
+    XVisualInfo *visual_info;
+    GLXContext glx_context;
+    cairo_device_t *device;
+    Display *display;
+    Window test_window;
+    cairo_surface_t *window_surface;
+    cairo_bool_t has_multithread_makecurrent;
+
+    display = XOpenDisplay (NULL);
+    if (display == NULL)
+	return CAIRO_TEST_UNTESTED;
+
+    visual_info = glXChooseVisual (display, DefaultScreen (display), rgba_attribs);
+    if (visual_info == NULL) {
+	XCloseDisplay (display);
+	return CAIRO_TEST_UNTESTED;
+    }
+
+    glx_context = glXCreateContext (display, visual_info, NULL, True);
+    if (glx_context == NULL) {
+	XCloseDisplay (display);
+	return CAIRO_TEST_UNTESTED;
+    }
+
+    test_window = create_test_window (display, glx_context, visual_info);
+    XFree (visual_info);
+    if (test_window == None) {
+	XCloseDisplay (display);
+	return CAIRO_TEST_UNTESTED;
+    }
+
+    has_multithread_makecurrent = multithread_makecurrent_available (display);
+
+    glXMakeCurrent (display, None, None);
+
+    /* Creating the device should actually change the GL context, because of
+     * the creation/activation of a dummy window used for texture surfaces. */
+    device = cairo_glx_device_create (display, glx_context);
+
+    /* It's important that when multithread_makecurrent isn't available the
+     * Cairo backend clears the current context, so that the dummy texture
+     * window is not active while the device is unlocked. */
+    if (has_multithread_makecurrent) {
+	assert (None != glXGetCurrentDrawable ());
+	assert (display == glXGetCurrentDisplay ());
+	assert (glx_context == glXGetCurrentContext ());
+    } else {
+	assert (None == glXGetCurrentDrawable ());
+	assert (None == glXGetCurrentDisplay ());
+	assert (None == glXGetCurrentContext ());
+    }
+
+    window_surface = cairo_gl_surface_create_for_window (device, test_window,
+							 1, 1);
+    assert (cairo_surface_status (window_surface) == CAIRO_STATUS_SUCCESS);
+
+    draw_to_surface (window_surface);
+    if (has_multithread_makecurrent) {
+	assert (test_window == glXGetCurrentDrawable ());
+	assert (display == glXGetCurrentDisplay ());
+	assert (glx_context == glXGetCurrentContext ());
+    } else {
+	assert (None == glXGetCurrentDrawable ());
+	assert (None == glXGetCurrentDisplay ());
+	assert (None == glXGetCurrentContext ());
+    }
+
+    /* In this case, drawing to the window surface will not change the current
+     * GL context, so Cairo setting the current surface and context to none. */
+    glXMakeCurrent (display, test_window, glx_context);
+    draw_to_surface (window_surface);
+    assert (test_window == glXGetCurrentDrawable ());
+    assert (display == glXGetCurrentDisplay ());
+    assert (glx_context == glXGetCurrentContext ());
+
+    /* There should be no context change when destroying the device. */
+    cairo_device_destroy (device);
+    assert (test_window == glXGetCurrentDrawable ());
+    assert (display == glXGetCurrentDisplay ());
+    assert (glx_context == glXGetCurrentContext ());
+
+    glXDestroyContext(display, glx_context);
+    XDestroyWindow (display, test_window);
+    XCloseDisplay (display);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (gl_device_creation_changes_context,
+	    "Test that using the Cairo GL backend leaves the current GL context in the appropriate state",
+	    "gl", /* keywords */
+	    NULL, /* requirements */
+	    0, 0,
+	    preamble, NULL)