Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com> --- tests/all.tests | 6 + .../ext_framebuffer_multisample/CMakeLists.gl.txt | 1 + .../blit-scaled-glsl.cpp | 268 +++++++++++++++++++++ 3 files changed, 275 insertions(+) create mode 100644 tests/spec/ext_framebuffer_multisample/blit-scaled-glsl.cpp
diff --git a/tests/all.tests b/tests/all.tests index 09b67a2..892f0b7 100644 --- a/tests/all.tests +++ b/tests/all.tests @@ -1641,6 +1641,12 @@ for num_samples in MSAA_SAMPLE_COUNTS: test_name) ext_framebuffer_multisample[test_name] = PlainExecTest(executable) +for num_samples in MSAA_SAMPLE_COUNTS: + test_name = ' '.join(['blit-scaled-glsl', str(num_samples)]) + executable = 'ext_framebuffer_multisample-{0} -auto'.format( + test_name) + ext_framebuffer_multisample[test_name] = PlainExecTest(executable) + ext_framebuffer_object = Group() spec['EXT_framebuffer_object'] = ext_framebuffer_object add_fbo_stencil_tests(ext_framebuffer_object, 'GL_STENCIL_INDEX1') diff --git a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt index 8143497..6778de8 100644 --- a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt +++ b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt @@ -24,6 +24,7 @@ piglit_add_executable (ext_framebuffer_multisample-alpha-to-one-single-sample-bu piglit_add_executable (ext_framebuffer_multisample-bitmap common.cpp bitmap.cpp) piglit_add_executable (ext_framebuffer_multisample-blit-flipped common.cpp blit-flipped.cpp) piglit_add_executable (ext_framebuffer_multisample-blit-scaled common.cpp blit-scaled.cpp) +piglit_add_executable (ext_framebuffer_multisample-blit-scaled-glsl common.cpp blit-scaled-glsl.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) piglit_add_executable (ext_framebuffer_multisample-blit-mismatched-formats common.cpp blit-mismatched-formats.cpp) diff --git a/tests/spec/ext_framebuffer_multisample/blit-scaled-glsl.cpp b/tests/spec/ext_framebuffer_multisample/blit-scaled-glsl.cpp new file mode 100644 index 0000000..e42b87a --- /dev/null +++ b/tests/spec/ext_framebuffer_multisample/blit-scaled-glsl.cpp @@ -0,0 +1,268 @@ +/* + * Copyright © 2013 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. + */ + +/** \file blit-scaled-glsl.cpp + * + * This test verifies the accuracy of scaled blitting from a multisampled + * buffer to a single-sampled buffer by comparing the output from following + * rendering scenarios: + * 1. multisample buffer to single sample buffer scaled blit using extension + * EXT_multisample_framebuffer_blit_scaled extension. + * 2. multisample buffer to single sample buffer scaled blit implemented + * using glsl shader program. + */ + +#include "common.h" + +const int pattern_width = 256; const int pattern_height = 256; +const float w = pattern_width / 2; const float h = pattern_height / 2; +int num_samples; + +PIGLIT_GL_TEST_CONFIG_BEGIN + + config.supports_gl_compat_version = 10; + + config.window_width = pattern_width*2; + config.window_height = pattern_height; + config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA; + +PIGLIT_GL_TEST_CONFIG_END + +static Fbo multisampled_fbo, singlesampled_fbo; +GLuint prog, vao, vertex_buf; +static TestPattern *test_pattern; +static Test *test = NULL; + +static void +print_usage_and_exit(char *prog_name) +{ + printf("Usage: %s <num_samples>\n", prog_name); + piglit_report_result(PIGLIT_FAIL); +} + +void +compile_ms_scaled_blit_shader(void) +{ + static const char *vert = + "#version 130\n" + "uniform mat4 proj;\n" + "in vec2 pos;\n" + "in vec2 texCoord;\n" + "out vec2 textureCoord;\n" + "void main()\n" + "{\n" + " gl_Position = proj * vec4(pos, 0.0, 1.0);\n" + " textureCoord = texCoord;\n" + "}\n"; + + static const char *frag = + "#version 130\n" + "#extension GL_ARB_texture_multisample : require\n" + "in vec2 textureCoord;\n" + "uniform sampler2DMS msTex;\n" + "uniform int samples;\n" + "out vec4 out_color;\n" + "void main()\n" + "{\n" + " int i;\n" + " out_color = vec4(0.0, 0.0, 0.0, 0.0);\n" + " for (i = 0; i < samples; i++)\n" + " out_color = out_color + texelFetch(msTex, ivec2(textureCoord), i);\n" + " out_color = out_color / 4;\n" + "}\n"; + + /* Compile program */ + prog = glCreateProgram(); + GLint vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vert); + glAttachShader(prog, vs); + piglit_check_gl_error(GL_NO_ERROR); + GLint fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag); + glAttachShader(prog, fs); + glBindAttribLocation(prog, 0, "pos"); + glBindAttribLocation(prog, 1, "texCoord"); + glLinkProgram(prog); + if (!piglit_link_check_status(prog)) { + piglit_report_result(PIGLIT_FAIL); + } + + /* Set up vertex array object */ + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + + /* Set up vertex input buffer */ + glGenBuffers(1, &vertex_buf); + glBindBuffer(GL_ARRAY_BUFFER, vertex_buf); + glEnableVertexAttribArray(0); + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), + (void *) 0); + glEnableVertexAttribArray(1); + glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*sizeof(float), + (void *) (2*sizeof(float))); + + /* Set up element input buffer to tesselate a quad into + * triangles + */ + unsigned int indices[6] = { 0, 1, 2, 0, 2, 3 }; + GLuint element_buf; + glGenBuffers(1, &element_buf); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, element_buf); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, + GL_STATIC_DRAW); +} + +void +do_multisample_scaled_blit(const Fbo *src_fbo, GLint samples) +{ + const float proj[4][4] = { + { 1, 0, 0, 0 }, + { 0, 1, 0, 0 }, + { 0, 0, 1, 0 }, + { 0, 0, 0, 1 }}; + + float vertex_data[4][4] = { + { -1, -1, 0, 0 }, + { -1, 1, 0, h }, + { 1, 1, w, h }, + { 1, -1, w, 0 }}; + + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, src_fbo->color_tex); + + glUseProgram(prog); + glBindVertexArray(vao); + + /* Set up uniforms */ + glUseProgram(prog); + glUniformMatrix4fv(glGetUniformLocation(prog, "proj"), 1, GL_TRUE, &proj[0][0]); + glUniform1i(glGetUniformLocation(prog, "msTex"), 0); + glUniform1i(glGetUniformLocation(prog, "samples"), samples); + + glBindBuffer(GL_ARRAY_BUFFER, vertex_buf); + glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_data), vertex_data, + GL_STREAM_DRAW); + glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, (void *) 0); +} + +void +piglit_init(int argc, char **argv) +{ + if (argc != 2) + print_usage_and_exit(argv[0]); + + /* 1st arg: num_samples */ + char *endptr = NULL; + num_samples = strtol(argv[1], &endptr, 0); + if (endptr != argv[1] + strlen(argv[1])) + print_usage_and_exit(argv[0]); + + piglit_require_gl_version(21); + piglit_require_extension("GL_ARB_vertex_array_object"); + piglit_require_extension("GL_EXT_framebuffer_multisample_blit_scaled"); + + /* Skip the test if num_samples > GL_MAX_SAMPLES */ + GLint max_samples; + glGetIntegerv(GL_MAX_SAMPLES, &max_samples); + if (num_samples == 0 || num_samples > max_samples) + piglit_report_result(PIGLIT_SKIP); + + singlesampled_fbo.setup(FboConfig(0, + 2 * pattern_width, + pattern_height)); + FboConfig msConfig(num_samples, pattern_width, pattern_height); + msConfig.attach_texture = true; + multisampled_fbo.setup(msConfig); + + test_pattern = new Triangles(); + test_pattern->compile(); + + test = create_test(TEST_TYPE_COLOR, num_samples, + false /*small*/, + true /* combine_depth_stencil */, + pattern_width, pattern_height, + 16 /* supersample_factor */); + + compile_ms_scaled_blit_shader(); + if (!piglit_check_gl_error(GL_NO_ERROR)) { + piglit_report_result(PIGLIT_FAIL); + } +} + +enum piglit_result +piglit_display() +{ + GLfloat scale; + GLint samples; + bool pass = true, result = true; + + /* Draw the test pattern into the framebuffer with multisample + * texture attachment. + */ + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, multisampled_fbo.handle); + glGetIntegerv(GL_SAMPLES, &samples); + glViewport(0, 0, w, h); + test_pattern->draw(TestPattern::no_projection); + + printf("Left: multisample scaled blit using extension.\n" + "Right: multisample scaled blit using shader program.\n"); + + for(scale = 0.1; scale < 2.1f; scale += 0.1) { + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo); + glClear(GL_COLOR_BUFFER_BIT); + + /* Do scaled resolve of multisampled_fbo to left half of + * singlesampled_fbo */ +// printf("ms to ss scaled blit using extension.\n"); + glBindFramebuffer(GL_READ_FRAMEBUFFER, multisampled_fbo.handle); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, singlesampled_fbo.handle); + glClear(GL_COLOR_BUFFER_BIT); + glBlitFramebuffer(0, 0, w, h, + 0, 0, w * scale, h * scale, + GL_COLOR_BUFFER_BIT, + GL_SCALED_RESOLVE_FASTEST_EXT); + + /* Use multisampled texture to draw in to right half of scaled + * single-sampled buffer using shader program. + */ +// printf("ms to ss scaled blit using shader program.\n"); + glBindFramebuffer(GL_READ_FRAMEBUFFER, multisampled_fbo.handle); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, singlesampled_fbo.handle); + glViewport(pattern_width, 0, w * scale, h * scale); + do_multisample_scaled_blit(&multisampled_fbo, samples); + + pass = piglit_check_gl_error(GL_NO_ERROR) && pass; + +// printf("ss non-scaled blit to window system framebuffer.\n"); + glBindFramebuffer(GL_READ_FRAMEBUFFER, singlesampled_fbo.handle); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo); + glBlitFramebuffer(0, 0, 2 * pattern_width, piglit_height, + 0, 0, 2 * pattern_width, piglit_height, + GL_COLOR_BUFFER_BIT, GL_NEAREST); + + result = test->measure_accuracy(); + pass = result && pass; + piglit_present_results(); + printf("scaling_factor = %f, result = %s\n\n", + scale, result ? "pass" : "fail"); + } + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} -- 1.8.1.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev