Currently fails with llvmpipe. Fragments with alpha <= 0.5 are discarded. Passes with softpipe, NVIDIA driver.
v2: test with GL_MULTISAMPLE both enabled and disabled, fix all.py entry --- tests/all.py | 1 + tests/spec/CMakeLists.txt | 1 + tests/spec/gl-1.3/CMakeLists.gl.txt | 13 ++++ tests/spec/gl-1.3/CMakeLists.txt | 1 + tests/spec/gl-1.3/alpha_to_coverage_nop.c | 110 ++++++++++++++++++++++++++++++ 5 files changed, 126 insertions(+) create mode 100644 tests/spec/gl-1.3/CMakeLists.gl.txt create mode 100644 tests/spec/gl-1.3/CMakeLists.txt create mode 100644 tests/spec/gl-1.3/alpha_to_coverage_nop.c diff --git a/tests/all.py b/tests/all.py index a448331..b069548 100644 --- a/tests/all.py +++ b/tests/all.py @@ -840,6 +840,7 @@ with profile.group_manager( g(['gl-1.1-xor']) g(['gl-1.1-xor-copypixels']) g(['gl-1.2-texture-base-level']) + g(['gl-1.3-alpha_to_coverage_nop']) g(['hiz'], run_concurrent=False) g(['infinite-spot-light'], run_concurrent=False) g(['line-aa-width'], run_concurrent=False) diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt index 9b0f73e..9972785 100644 --- a/tests/spec/CMakeLists.txt +++ b/tests/spec/CMakeLists.txt @@ -106,6 +106,7 @@ add_subdirectory (glsl-es-3.00) add_subdirectory (gl-1.0) add_subdirectory (gl-1.1) add_subdirectory (gl-1.2) +add_subdirectory (gl-1.3) add_subdirectory (gl-1.4) add_subdirectory (gl-1.5) add_subdirectory (gl-2.0) diff --git a/tests/spec/gl-1.3/CMakeLists.gl.txt b/tests/spec/gl-1.3/CMakeLists.gl.txt new file mode 100644 index 0000000..607d2c1 --- /dev/null +++ b/tests/spec/gl-1.3/CMakeLists.gl.txt @@ -0,0 +1,13 @@ +include_directories( + ${GLEXT_INCLUDE_DIR} + ${OPENGL_INCLUDE_PATH} +) + +link_libraries ( + piglitutil_${piglit_target_api} + ${OPENGL_gl_LIBRARY} +) + +piglit_add_executable (gl-1.3-alpha_to_coverage_nop alpha_to_coverage_nop.c) + +# vim: ft=cmake: diff --git a/tests/spec/gl-1.3/CMakeLists.txt b/tests/spec/gl-1.3/CMakeLists.txt new file mode 100644 index 0000000..4a012b9 --- /dev/null +++ b/tests/spec/gl-1.3/CMakeLists.txt @@ -0,0 +1 @@ +piglit_include_target_api() \ No newline at end of file diff --git a/tests/spec/gl-1.3/alpha_to_coverage_nop.c b/tests/spec/gl-1.3/alpha_to_coverage_nop.c new file mode 100644 index 0000000..b343056 --- /dev/null +++ b/tests/spec/gl-1.3/alpha_to_coverage_nop.c @@ -0,0 +1,110 @@ +/* + * Copyright © 2016 VMware, Inc. + * + * 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. + */ + + +/** + * Test that enabling GL_ALPHA_TO_COVERAGE has no effect for non-MSAA + * rendering. + */ + + +#include "piglit-util-gl.h" + +PIGLIT_GL_TEST_CONFIG_BEGIN + config.supports_gl_compat_version = 13; + config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE; +PIGLIT_GL_TEST_CONFIG_END + + +void +piglit_init(int argc, char **argv) +{ + /* nothing */ +} + +static bool +test_coverage_nop(bool msaa_enabled) +{ + float alpha; + + if (msaa_enabled) + glEnable(GL_MULTISAMPLE); + else + glDisable(GL_MULTISAMPLE); + + /* Render quad with varying alpha value. Make sure it draws + * and is not missing because of some kind of MSAA coverage bug. + */ + for (alpha = 1.0; alpha >= 0.0; alpha -= 1.0/128) { + float expected[4] = {alpha, alpha, alpha, alpha}; + + glClear(GL_COLOR_BUFFER_BIT); + glColor4fv(expected); + piglit_draw_rect(-1, -1, 2, 2); + + if (!piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, + expected)) { + printf("Rect did not draw for alpha = %g " + "with GL_MULTISAMPLE %s\n", + alpha, + msaa_enabled ? "enabled" : "disabled"); + return false; + } + + piglit_present_results(); + } + + return true; +} + + +enum piglit_result +piglit_display(void) +{ + GLint samples; + bool pass; + + glGetIntegerv(GL_SAMPLES, &samples); + if (samples != 0) { + printf("Unexpected GL_SAMPLES = %d\n", samples); + return PIGLIT_FAIL; + } + + glGetIntegerv(GL_SAMPLE_BUFFERS, &samples); + if (samples != 0) { + printf("Unexpected GL_SAMPLE_BUFFERS = %d\n", samples); + return PIGLIT_FAIL; + } + + glClearColor(1, 0, 0, 0); + + /* Enabling GL_SAMPLE_ALPHA_TO_COVERAGE should have no effect + * with a non-MSAA drawing surface. + */ + glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE); + + pass = test_coverage_nop(true); + pass = test_coverage_nop(false) && pass; + + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} -- 1.9.1 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit