A simple multisampling test to check whether the values written to gl_SampleMaskIn are still correct after enabling the ARB_post_depth_coverage extension.
Signed-off-by: Plamena Manolova <plamena.manol...@intel.com> --- tests/all.py | 1 + .../spec/arb_post_depth_coverage/CMakeLists.gl.txt | 1 + tests/spec/arb_post_depth_coverage/multisampling.c | 311 +++++++++++++++++++++ 3 files changed, 313 insertions(+) create mode 100644 tests/spec/arb_post_depth_coverage/multisampling.c diff --git a/tests/all.py b/tests/all.py index cef4773..95aa952 100644 --- a/tests/all.py +++ b/tests/all.py @@ -4768,6 +4768,7 @@ with profile.test_list.group_manager( PiglitGLTest, grouptools.join('spec', 'arb_post_depth_coverage')) as g: g(['arb_post_depth_coverage-basic']) + g(['arb_post_depth_coverage-multisampling']) with profile.test_list.group_manager( PiglitGLTest, diff --git a/tests/spec/arb_post_depth_coverage/CMakeLists.gl.txt b/tests/spec/arb_post_depth_coverage/CMakeLists.gl.txt index 1a71774..9c1e826 100644 --- a/tests/spec/arb_post_depth_coverage/CMakeLists.gl.txt +++ b/tests/spec/arb_post_depth_coverage/CMakeLists.gl.txt @@ -9,3 +9,4 @@ link_libraries ( ) piglit_add_executable (arb_post_depth_coverage-basic basic.c) +piglit_add_executable (arb_post_depth_coverage-multisampling multisampling.c) diff --git a/tests/spec/arb_post_depth_coverage/multisampling.c b/tests/spec/arb_post_depth_coverage/multisampling.c new file mode 100644 index 0000000..0c867da --- /dev/null +++ b/tests/spec/arb_post_depth_coverage/multisampling.c @@ -0,0 +1,311 @@ +/* + * Copyright (c) 2015 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 "piglit-util-gl.h" + +/* + * A test to check whether the right values are written to gl_SampleMaskIn + * when ARB_post_depth_coverage and multisampling are enabled. Tests at + * 2, 4, 8, 16 sample rates. + */ + +PIGLIT_GL_TEST_CONFIG_BEGIN + config.supports_gl_compat_version = 43; + config.supports_gl_core_version = 43; + config.window_width = 160; + config.window_height = 160; + config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DEPTH | + PIGLIT_GL_VISUAL_DOUBLE; +PIGLIT_GL_TEST_CONFIG_END + +static GLuint prog1, prog2, vao, ssbo, tex_color, tex_depth, fbo; +static GLint *sample_mask; + +static const char *vs_text = + "#version 430\n" + "in vec4 pos_in;\n" + "void main()\n" + "{\n" + " gl_Position = pos_in;\n" + "}\n"; + +static const char *fs_text1 = + "#version 430\n" + "out vec4 color;\n" + "void main()\n" + "{\n" + " gl_FragDepth = 0.5f;\n" + " color = vec4(0.0, 1.0, 0.0, 1.0);\n" + "}\n"; + +static const char *fs_text2 = + "#version 430\n" + "#extension GL_ARB_post_depth_coverage: enable\n" + "out vec4 color;\n" + "layout(early_fragment_tests) in;\n" + "layout(post_depth_coverage) in;\n" + "layout(std430, binding = 0) buffer MaskOutput {\n" + " int data[];\n" + "} mask_output;\n" + "layout(location = 1) uniform int width;\n" + "layout(location = 2) uniform int samples;\n" + "void main()\n" + "{\n" + " int index = int(gl_FragCoord.y) * width + int(gl_FragCoord.x);\n" + " atomicAdd(mask_output.data[index], bitCount(gl_SampleMaskIn[0]));\n" + " color = vec4(1.0, 0.0, 0.0, 1.0);\n" + "}\n"; + +static GLuint +make_shader_program1(void) +{ + GLuint prog; + + prog = piglit_build_simple_program(vs_text, fs_text1); + glUseProgram(prog); + + glBindAttribLocation(prog, 0, "pos_in"); + + glLinkProgram(prog); + + if (!piglit_check_gl_error(GL_NO_ERROR)) { + piglit_report_result(PIGLIT_FAIL); + } + + return prog; +} + +static GLuint +make_shader_program2(void) +{ + GLuint prog; + + prog = piglit_build_simple_program(vs_text, fs_text2); + glUseProgram(prog); + + glBindAttribLocation(prog, 0, "pos_in"); + + glLinkProgram(prog); + + if (!piglit_check_gl_error(GL_NO_ERROR)) { + piglit_report_result(PIGLIT_FAIL); + } + + return prog; +} + +static GLuint +make_ssbo(void) +{ + GLuint ssbo; + glGenBuffers(1, &ssbo); + glBindBuffer(GL_SHADER_STORAGE_BUFFER, ssbo); + + if (!piglit_check_gl_error(GL_NO_ERROR)) { + piglit_report_result(PIGLIT_FAIL); + } + + return ssbo; +} + +static GLuint +make_fbo(void) +{ + GLuint fbo; + glGenFramebuffers(1, &fbo); + glBindFramebuffer(GL_FRAMEBUFFER, fbo ); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex_color); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + GL_TEXTURE_2D_MULTISAMPLE, tex_color, 0); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex_depth); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, + GL_TEXTURE_2D_MULTISAMPLE, tex_depth, 0); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0); + + return fbo; +} + +static GLuint +make_texture_color(void) +{ + GLuint tex; + + glGenTextures(1, &tex); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex); + glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, 2, + GL_RGBA32F, piglit_width, piglit_height, false); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0); + + return tex; +} + +static GLuint +make_texture_depth(void) +{ + GLuint tex; + + glGenTextures(1, &tex); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex); + glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, 2, + GL_DEPTH24_STENCIL8, piglit_width, piglit_height, false); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0); + + return tex; +} + +static GLuint +make_vao(void) +{ + static const float pos_tc[12][2] = { + { -1.0, -1.0 }, + { 0.0, -1.0 }, + { 0.0, 1.0 }, + { 0.0, 1.0 }, + { -1.0, 1.0 }, + { -1.0, -1.0 }, + { -1.0, -1.0 }, + { 1.0, -1.0 }, + { 1.0, 1.0 }, + { 1.0, 1.0 }, + { -1.0, 1.0 }, + { -1.0, -1.0 } + }; + const int stride = sizeof(pos_tc[0]); + GLuint vbo, vao; + + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + + glGenBuffers(1, &vbo); + glBindBuffer(GL_ARRAY_BUFFER, vbo); + glBufferData(GL_ARRAY_BUFFER, sizeof(pos_tc), pos_tc, GL_STATIC_DRAW); + piglit_check_gl_error(GL_NO_ERROR); + + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, stride, (void *) 0); + + glEnableVertexAttribArray(0); + + if (!piglit_check_gl_error(GL_NO_ERROR)) { + piglit_report_result(PIGLIT_FAIL); + } + + return vbo; +} + +void +piglit_init(int argc, char **argv) +{ + piglit_require_extension("GL_ARB_post_depth_coverage"); + + glEnable(GL_DEPTH_TEST); + glEnable(GL_STENCIL_TEST); + glEnable(GL_MULTISAMPLE); + glClearColor(0.0, 0.0, 0.0, 1.0); + + prog1 = make_shader_program1(); + prog2 = make_shader_program2(); + vao = make_vao(); + ssbo = make_ssbo(); + tex_color = make_texture_color(); + tex_depth = make_texture_depth(); + fbo = make_fbo(); +} + + +enum piglit_result +piglit_display(void) +{ + int samples[4] = { 2, 4, 8, 16 }; + bool pass = true; + int i, j, k; + + glViewport(0, 0, piglit_width, piglit_height); + + for (j = 0; j < 4; j++) { + sample_mask = (GLint*) calloc (piglit_width * piglit_height, + sizeof(GLint)); + glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(GLint) * piglit_width * + piglit_height, &sample_mask[0], GL_DYNAMIC_DRAW); + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, ssbo); + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex_color); + glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples[j], + GL_RGBA8, piglit_width, piglit_height, false); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex_depth); + glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples[j], + GL_DEPTH24_STENCIL8, piglit_width, piglit_height, false); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | + GL_STENCIL_BUFFER_BIT); + + glUseProgram(prog1); + glStencilFunc(GL_ALWAYS, 1, 0xFF); + glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE); + glDrawArrays(GL_TRIANGLES, 0, 6); + + glUseProgram(prog2); + glStencilFunc(GL_NOTEQUAL, 1, 0xFF); + glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); + glUniform1i(1, piglit_width); + glUniform1i(2, samples[j]); + glDrawArrays(GL_TRIANGLES, 6, 6); + + glGetBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, sizeof(GLint) * + piglit_width * piglit_height, sample_mask); + + for (i = 0; i < piglit_width; i++) { + for (k = 0; k < piglit_height; k++) { + if (i >= piglit_width / 2) { + if (sample_mask[piglit_width * k + i] != samples[j]) { + pass = false; + break; + } + } else { + if (sample_mask[piglit_width * k + i] != 0) { + pass = false; + break; + } + } + } + + if (!pass) + break; + } + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); + glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo); + glDrawBuffer(GL_BACK); + glBlitFramebuffer(0, 0, piglit_width, piglit_height, 0, 0, piglit_width, + piglit_height, GL_COLOR_BUFFER_BIT, GL_NEAREST); + + piglit_present_results(); + free(sample_mask); + if (!pass) + break; + } + + pass = piglit_check_gl_error(GL_NO_ERROR) && pass; + + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} -- 2.7.4 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit