diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/gl-device-release.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/gl-device-release.c | 182 |
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) |