enum piglit_result
piglit_display()
{
bool pass = true;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
allocate_data_arrays();
draw_reference_image(false /* sample_alpha_to_coverage */,
true /* sample_alpha_to_one */);
draw_test_image(false /* sample_alpha_to_coverage */,
true /* sample_alpha_to_one */);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
pass = piglit_probe_rect_halves_equal_rgba(0, 0,
piglit_width,
piglit_height)
&& pass;
/* Free the memory allocated for data arrays */
free_data_arrays();
if (!piglit_automatic)
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
allocate_data_arrays();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC1_ALPHA);
/* Reference image drawn when sample_alpha_to_coverage is enabled,
* doesn't represent an expected image. Reference image is drawn only
* to visualize the image difference caused by enabling
* sample_alpha_to_coverage
*/
draw_reference_image(true /* sample_alpha_to_coverage */,
false /* sample_alpha_to_one */);
draw_test_image(true /* sample_alpha_to_coverage */,
false /* sample_alpha_to_one */);
glDisable(GL_BLEND);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Probe test images of all the draw_buffers blitted to resolve fbo
* and compare with expected color values. This method of verification
* is appropriate for tests with sample-alpha-to-coverage enabled.
* Possibility of dithering effect when the coverage value is not a
* strict multiple of 1 / num_samples makes image compare (test /
* reference image) unsuitable for this test.
*/
pass = probe_framebuffer_color() && pass;
/* Free the memory allocated for data arrays */
free_data_arrays();
if (!piglit_automatic)
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
enum piglit_result
piglit_display()
{
bool pass = true;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
allocate_data_arrays();
/* Set sample_alpha_to_one = false to generate the reference image */
draw_reference_image(false /* sample_alpha_to_coverage */,
false /* sample_alpha_to_one */);
/* Test multisample fbo with GL_SAMPLE_ALPHA_TO_ONE enabled but
* GL_MULTISAMPLE disabled */
glDisable(GL_MULTISAMPLE);
draw_test_image(false /* sample_alpha_to_coverage */,
true /* sample_alpha_to_one */);
glEnable(GL_MULTISAMPLE);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
pass = piglit_probe_rect_halves_equal_rgba(0, 0,
piglit_width,
piglit_height)
&& pass;
/* Free the memory allocated for data arrays */
free_data_arrays();
if (!piglit_automatic)
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}