This test verifies that alpha values are not modified if GL_SAMPLE_ALPHA_TO_ONE is enabled and the buffer is single-sampled.
Signed-off-by: Anuj Phogat <[email protected]> --- tests/all.tests | 6 + .../ext_framebuffer_multisample/CMakeLists.gl.txt | 2 + .../alpha-to-one-single-sample-buffer.cpp | 109 ++++++++++++++++++++ 3 files changed, 117 insertions(+), 0 deletions(-) create mode 100644 tests/spec/ext_framebuffer_multisample/alpha-to-one-single-sample-buffer.cpp diff --git a/tests/all.tests b/tests/all.tests index aeac4c1..27951bb 100644 --- a/tests/all.tests +++ b/tests/all.tests @@ -1460,6 +1460,12 @@ for num_samples in MSAA_SAMPLE_COUNTS: ext_framebuffer_multisample[test_name] = PlainExecTest(executable) for num_samples in MSAA_SAMPLE_COUNTS: + test_name = ' '.join(['alpha-to-one-single-sample-buffer', str(num_samples)]) + executable = 'ext_framebuffer_multisample-{0} -auto'.format( + test_name) + ext_framebuffer_multisample[test_name] = PlainExecTest(executable) + +for num_samples in MSAA_SAMPLE_COUNTS: test_name = ' '.join(['bitmap', str(num_samples)]) executable = 'ext_framebuffer_multisample-{0} -auto'.format( test_name) diff --git a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt index e51dfc2..ee12e68 100644 --- a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt +++ b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt @@ -12,6 +12,8 @@ link_libraries ( piglit_add_executable (ext_framebuffer_multisample-accuracy common.cpp accuracy.cpp) piglit_add_executable (ext_framebuffer_multisample-alpha-to-one-msaa-disabled common.cpp draw-buffers-common.cpp alpha-to-one-msaa-disabled.cpp) +piglit_add_executable (ext_framebuffer_multisample-alpha-to-one-single-sample-buffer common.cpp + draw-buffers-common.cpp alpha-to-one-single-sample-buffer.cpp) piglit_add_executable (ext_framebuffer_multisample-bitmap common.cpp bitmap.cpp) piglit_add_executable (ext_framebuffer_multisample-blit-mismatched-samples common.cpp blit-mismatched-samples.cpp) piglit_add_executable (ext_framebuffer_multisample-blit-mismatched-sizes common.cpp blit-mismatched-sizes.cpp) diff --git a/tests/spec/ext_framebuffer_multisample/alpha-to-one-single-sample-buffer.cpp b/tests/spec/ext_framebuffer_multisample/alpha-to-one-single-sample-buffer.cpp new file mode 100644 index 0000000..9143e83 --- /dev/null +++ b/tests/spec/ext_framebuffer_multisample/alpha-to-one-single-sample-buffer.cpp @@ -0,0 +1,109 @@ +/* + * Copyright © 2012 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include "draw-buffers-common.h" + +/** + * \file alpha-to-one-single-sample-buffer.cpp + * + * Verify that alpha values are not modified if GL_SAMPLE_ALPHA_TO_ONE + * is enabled and the buffer is single-sampled. + * + * This test operates by drawing a pattern in single sample FBO to generate + * a reference and test image. Reference imag is drawn to the right half of + * window system draw buffer and test image to the left half. + * + * Compare the left and right halves of window system frame buffer to verify + * the test image. + * + * Author: Anuj Phogat <[email protected]> + */ + +PIGLIT_GL_TEST_MAIN(256 /*window_width*/, + 256 /*window_height*/, + GLUT_DOUBLE | GLUT_RGBA | GLUT_ALPHA) + +void +piglit_init(int argc, char **argv) +{ + const int num_attachments = 1; + /* For single sample buffer */ + const int samples = 0; + + piglit_require_gl_version(30); + + int pattern_width = piglit_width / 2; + int pattern_height = piglit_height / num_attachments; + + piglit_ortho_projection(pattern_width, + pattern_height, + GL_TRUE); + + /* Skip the test if samples > GL_MAX_SAMPLES */ + GLint max_samples; + glGetIntegerv(GL_MAX_SAMPLES, &max_samples); + + if (samples > max_samples) + piglit_report_result(PIGLIT_SKIP); + + ms_fbo_and_draw_buffers_setup(samples, + pattern_width, + pattern_height, + num_attachments, + GL_COLOR_BUFFER_BIT, + GL_RGBA); + shader_compile(); +} + +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(); + + /* Set sample_alpha_to_one = false to generate reference image */ + draw_reference_image(false /* sample_alpha_to_coverage */, + false /* 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; +} -- 1.7.7.6 _______________________________________________ Piglit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/piglit
