In compatiblity profiles, the GL_ARB_separate_shader_objects extension allows passing data via built-in varyings such as gl_TexCoord[]. We don't do compatibility profiles, but we do expose SSO in legacy GL contexts and allow it with GLSL 1.30.
This test actually tries to do that in a rendering test. This is particularly interesting because Mesa's VARYING_SLOT_* enums handle built-in varyings different than generic ones. I wanted to be able to see how those came through; this provides a simple example. Signed-off-by: Kenneth Graunke <kenn...@whitecape.org> --- .../arb_separate_shader_objects/CMakeLists.gl.txt | 1 + .../arb_separate_shader_objects/compat-builtins.c | 111 +++++++++++++++++++++ 2 files changed, 112 insertions(+) create mode 100644 tests/spec/arb_separate_shader_objects/compat-builtins.c diff --git a/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt b/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt index f7feb27..b596f67 100644 --- a/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt +++ b/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt @@ -12,6 +12,7 @@ link_libraries ( piglit_add_executable (arb_separate_shader_object-400-combinations 400-combinations.c) piglit_add_executable (arb_separate_shader_object-active-sampler-conflict active-sampler-conflict.c) piglit_add_executable (arb_separate_shader_object-ActiveShaderProgram-invalid-program ActiveShaderProgram-invalid-program.c) +piglit_add_executable (arb_separate_shader_object-compat-builtins compat-builtins.c) piglit_add_executable (arb_separate_shader_object-GetProgramPipelineiv GetProgramPipelineiv.c) piglit_add_executable (arb_separate_shader_object-IsProgramPipeline IsProgramPipeline.c) piglit_add_executable (arb_separate_shader_object-ProgramUniform-coverage ProgramUniform-coverage.c) diff --git a/tests/spec/arb_separate_shader_objects/compat-builtins.c b/tests/spec/arb_separate_shader_objects/compat-builtins.c new file mode 100644 index 0000000..e84b746 --- /dev/null +++ b/tests/spec/arb_separate_shader_objects/compat-builtins.c @@ -0,0 +1,111 @@ +/* + * Copyright © 2015 Intel Corporation + * Copyright © 2015 Advanced Micro Devices, 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. + */ + +/** + */ + +#include "piglit-util-gl.h" + +PIGLIT_GL_TEST_CONFIG_BEGIN + + config.supports_gl_compat_version = 30; + config.supports_gl_core_version = 0; + config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE; + +PIGLIT_GL_TEST_CONFIG_END + +static GLuint pipeline; + +static const char *vs_code = + "#version 130\n" + "#extension GL_ARB_separate_shader_objects: require\n" + "#extension GL_ARB_explicit_attrib_location: require\n" + "\n" + "out vec4 gl_TexCoord[2];\n" + "\n" + "void main()\n" + "{\n" + " gl_Position = gl_Vertex;\n" + " gl_TexCoord[0] = vec4(0.1, 0.2, 0.3, 0.4);\n" + " gl_TexCoord[1] = vec4(0.01, 0.02, 0.03, 0.04);\n" + "}\n" + ; + +static const char *fs_code = + "#version 130\n" + "#extension GL_ARB_separate_shader_objects: require\n" + "#extension GL_ARB_explicit_attrib_location: require\n" + "\n" + "in vec4 gl_TexCoord[2];\n" + "\n" + "void main()\n" + "{\n" + " gl_FragColor = gl_TexCoord[0] + gl_TexCoord[1];\n" + "}\n" + ; + +enum piglit_result +piglit_display(void) +{ + static const float expected[] = { + 0.11, 0.22, 0.33, 0.44 + }; + bool pass; + + glClearColor(1.0f, 1.0f, 1.0f, 1.0f); + glClear(GL_COLOR_BUFFER_BIT); + + glBindProgramPipeline(pipeline); + piglit_draw_rect(-1, -1, 2, 2); + + pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, + expected); + + piglit_present_results(); + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} + +void piglit_init(int argc, char **argv) +{ + GLuint vs_prog, fs_prog; + + piglit_require_extension("GL_ARB_separate_shader_objects"); + piglit_require_GLSL_version(130); + + vs_prog = glCreateShaderProgramv(GL_VERTEX_SHADER, 1, + (const GLchar *const*)&vs_code); + piglit_link_check_status(vs_prog); + + fs_prog = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1, + (const GLchar *const *)&fs_code); + piglit_link_check_status(fs_prog); + + glGenProgramPipelines(1, &pipeline); + glUseProgramStages(pipeline, GL_VERTEX_SHADER_BIT, vs_prog); + glUseProgramStages(pipeline, GL_FRAGMENT_SHADER_BIT, fs_prog); + piglit_program_pipeline_check_status(pipeline); + + if (!piglit_check_gl_error(0)) + piglit_report_result(PIGLIT_FAIL); +} -- 2.5.1 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/piglit