[Piglit] [PATCH] arb_fragment_shader_interlock: Test image load/store.
Nicolai Hähnle
nhaehnle at gmail.com
Thu Apr 27 19:53:26 UTC 2017
On 25.04.2017 20:58, Plamena Manolova wrote:
> A test to check whether GL_ARB_fragment_shader_interlock operates as
> expected. This test simulates blending behaviour by using image loads/stores
> to a 3D texture. The blending formula used is:
> result = current_alpha * current_color + (1 - current_alpha) * previous_color
> Multisampling is also enabled and tested at 2, 4, 8 and 16.
>
> Signed-off-by: Plamena Manolova <plamena.manolova at intel.com>
Thanks for the v2!
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
> ---
> tests/all.py | 5 +
> tests/spec/CMakeLists.txt | 1 +
> .../CMakeLists.gl.txt | 12 +
> .../arb_fragment_shader_interlock/CMakeLists.txt | 1 +
> .../image-load-store.c | 297 +++++++++++++++++++++
> 5 files changed, 316 insertions(+)
> create mode 100644 tests/spec/arb_fragment_shader_interlock/CMakeLists.gl.txt
> create mode 100644 tests/spec/arb_fragment_shader_interlock/CMakeLists.txt
> create mode 100644 tests/spec/arb_fragment_shader_interlock/image-load-store.c
>
> diff --git a/tests/all.py b/tests/all.py
> index 3cd3b47..f105701 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -4804,6 +4804,11 @@ with profile.test_list.group_manager(
> g(['arb_post_depth_coverage-sample-shading'])
>
> with profile.test_list.group_manager(
> + PiglitGLTest,
> + grouptools.join('spec', 'arb_fragment_shader_interlock')) as g:
> + g(['arb_fragment_shader_interlock-image-load-store'])
> +
> +with profile.test_list.group_manager(
> PiglitGLTest,
> grouptools.join('spec', 'arb_shader_image_size')) as g:
> g(['arb_shader_image_size-builtin'], 'builtin')
> diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
> index 5bdde84..5bfa76b 100644
> --- a/tests/spec/CMakeLists.txt
> +++ b/tests/spec/CMakeLists.txt
> @@ -160,3 +160,4 @@ add_subdirectory (arb_shader_texture_image_samples)
> add_subdirectory (arb_texture_barrier)
> add_subdirectory (intel_conservative_rasterization)
> add_subdirectory (arb_post_depth_coverage)
> +add_subdirectory (arb_fragment_shader_interlock)
> diff --git a/tests/spec/arb_fragment_shader_interlock/CMakeLists.gl.txt b/tests/spec/arb_fragment_shader_interlock/CMakeLists.gl.txt
> new file mode 100644
> index 0000000..d8bb7da
> --- /dev/null
> +++ b/tests/spec/arb_fragment_shader_interlock/CMakeLists.gl.txt
> @@ -0,0 +1,12 @@
> +include_directories(
> + ${GLEXT_INCLUDE_DIR}
> + ${OPENGL_INCLUDE_PATH}
> +)
> +
> +link_libraries (
> + piglitutil_${piglit_target_api}
> + ${OPENGL_gl_LIBRARY}
> +)
> +
> +piglit_add_executable (arb_fragment_shader_interlock-image-load-store
> + image-load-store.c)
> diff --git a/tests/spec/arb_fragment_shader_interlock/CMakeLists.txt b/tests/spec/arb_fragment_shader_interlock/CMakeLists.txt
> new file mode 100644
> index 0000000..144a306
> --- /dev/null
> +++ b/tests/spec/arb_fragment_shader_interlock/CMakeLists.txt
> @@ -0,0 +1 @@
> +piglit_include_target_api()
> diff --git a/tests/spec/arb_fragment_shader_interlock/image-load-store.c b/tests/spec/arb_fragment_shader_interlock/image-load-store.c
> new file mode 100644
> index 0000000..390ffb2
> --- /dev/null
> +++ b/tests/spec/arb_fragment_shader_interlock/image-load-store.c
> @@ -0,0 +1,297 @@
> +/*
> + * 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 GL_ARB_fragment_shader_interlock operates as
> + * expected. This test simulates blending behaviour by using image loads/stores
> + * to a 3D texture. The blending formula used is:
> + * result = current_alpha * current_color + (1 - current_alpha) * previous_color
> + * Multisampling is also enabled and tested at 2, 4, 8 and 16.
> + */
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> + config.supports_gl_compat_version = 42;
> + config.supports_gl_core_version = 42;
> + config.window_width = 100;
> + config.window_height = 100;
> + config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DEPTH |
> + PIGLIT_GL_VISUAL_DOUBLE;
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +static GLuint prog, vao, tex_frame, tex_blend, fbo;
> +
> +static GLuint
> +make_fbo(void)
> +{
> + GLuint fbo;
> + glGenFramebuffers(1, &fbo);
> + glBindFramebuffer(GL_FRAMEBUFFER, fbo );
> + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex_frame);
> + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
> + GL_TEXTURE_2D_MULTISAMPLE, tex_frame, 0);
> +
> + return fbo;
> +}
> +
> +static GLuint
> +make_shader_program(void)
> +{
> + static const char *vs_text =
> + "#version 430\n"
> + "layout(location = 0) in vec4 pos_in;\n"
> + "layout(location = 1) in vec4 col_in;\n"
> + "smooth out vec4 col_vary;\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = pos_in;\n"
> + " col_vary = col_in;\n"
> + "}\n";
> +
> + static const char *fs_text =
> + "#version 430\n"
> + "#extension GL_ARB_fragment_shader_interlock: require\n"
> + "layout(pixel_interlock_ordered) in;\n"
> + "layout(rgba32f, binding = 0) uniform image3D img_output;\n"
> + "layout(location = 1) uniform int sample_rate;\n"
> + "smooth in vec4 col_vary;\n"
> + "out vec4 col_out;\n"
> + "void main()\n"
> + "{\n"
> + " vec4 result = vec4(0.0, 0.0, 0.0, 1.0);\n"
> + " ivec3 current_sample_coord = ivec3(gl_FragCoord.x, gl_FragCoord.y, gl_SampleID);\n"
> + " ivec3 result_coord = ivec3(gl_FragCoord.x, gl_FragCoord.y, sample_rate);\n"
> + " int i;\n"
> + " beginInvocationInterlockARB();\n"
> + " vec4 current_sample_color = imageLoad(img_output, current_sample_coord);\n"
> + " result.rgb += col_vary.a * col_vary.rgb + (1 - col_vary.a) * current_sample_color.rgb;\n"
> + " imageStore(img_output, current_sample_coord, result);\n"
> + "\n"
> + " for (i = 0; i < sample_rate; i++) {\n"
> + " if (i != gl_SampleID) {\n"
> + " ivec3 sample_coord = ivec3(gl_FragCoord.x, gl_FragCoord.y, i);\n"
> + " vec4 sample_color = imageLoad(img_output, sample_coord);\n"
> + " result.rgb += sample_color.rgb;\n"
> + " }\n"
> + " }\n"
> + " result.rgb /= sample_rate;\n"
> + " imageStore(img_output, result_coord, result);\n"
> + " endInvocationInterlockARB();\n"
> + " col_out = result;\n"
> + "}\n";
> +
> + GLuint prog;
> +
> + prog = piglit_build_simple_program(vs_text, fs_text);
> + glUseProgram(prog);
> +
> + glBindAttribLocation(prog, 0, "pos_in");
> + glBindAttribLocation(prog, 1, "col_in");
> +
> + glLinkProgram(prog);
> +
> + if (!piglit_check_gl_error(GL_NO_ERROR)) {
> + piglit_report_result(PIGLIT_FAIL);
> + }
> +
> + return prog;
> +}
> +
> +static GLuint
> +make_texture_buffer(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, tex);
> +
> + return tex;
> +}
> +
> +static GLuint
> +make_texture_blend(void)
> +{
> + GLuint tex;
> +
> + glGenTextures(1, &tex);
> + glActiveTexture(GL_TEXTURE0);
> + glBindTexture(GL_TEXTURE_3D, tex);
> + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
> + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
> + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
> + glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
> + glBindImageTexture(0, tex, 0, GL_TRUE, 0, GL_READ_WRITE, GL_RGBA32F);
> +
> + return tex;
> +}
> +
> +static GLuint
> +make_vao(void)
> +{
> + static const float pos_col[18][6] = {
> + { -1.0, -1.0, 0.0, 1.0, 0.0, 0.25 },
> + { 0.0, -1.0, 0.0, 1.0, 0.0, 0.25 },
> + { 0.0, 1.0, 0.0, 1.0, 0.0, 0.25 },
> + { 0.0, 1.0, 0.0, 1.0, 0.0, 0.25 },
> + { -1.0, 1.0, 0.0, 1.0, 0.0, 0.25 },
> + { -1.0, -1.0, 0.0, 1.0, 0.0, 0.25 },
> + { -1.0, -1.0, 1.0, 0.0, 0.0, 0.25 },
> + { 1.0, -1.0, 1.0, 0.0, 0.0, 0.25 },
> + { 1.0, 1.0, 1.0, 0.0, 0.0, 0.25 },
> + { 1.0, 1.0, 1.0, 0.0, 0.0, 0.25 },
> + { -1.0, 1.0, 1.0, 0.0, 0.0, 0.25 },
> + { -1.0, -1.0, 1.0, 0.0, 0.0, 0.25 },
> + { -1.0, -1.0, 0.0, 0.0, 1.0, 0.25 },
> + { 1.0, -1.0, 0.0, 0.0, 1.0, 0.25 },
> + { 1.0, 1.0, 0.0, 0.0, 1.0, 0.25 },
> + { 1.0, 1.0, 0.0, 0.0, 1.0, 0.25 },
> + { -1.0, 1.0, 0.0, 0.0, 1.0, 0.25 },
> + { -1.0, -1.0, 0.0, 0.0, 1.0, 0.25 }
> + };
> +
> + const int stride = sizeof(pos_col[0]);
> + GLuint vbo, vao;
> +
> + glGenVertexArrays(1, &vao);
> + glBindVertexArray(vao);
> +
> + glGenBuffers(1, &vbo);
> + glBindBuffer(GL_ARRAY_BUFFER, vbo);
> + glBufferData(GL_ARRAY_BUFFER, sizeof(pos_col), pos_col, GL_STATIC_DRAW);
> +
> + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, stride, (void *) 0);
> + glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, stride,
> + (void *)(sizeof(float) * 2));
> +
> + glEnableVertexAttribArray(0);
> + glEnableVertexAttribArray(1);
> +
> + if (!piglit_check_gl_error(GL_NO_ERROR)) {
> + piglit_report_result(PIGLIT_FAIL);
> + }
> +
> + return vao;
> +}
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + piglit_require_extension("GL_ARB_fragment_shader_interlock");
> +
> + glEnable(GL_MULTISAMPLE);
> + glDisable(GL_CULL_FACE);
> + glClearColor(0.0, 0.0, 0.0, 1.0);
> +
> + prog = make_shader_program();
> + vao = make_vao();
> + tex_frame = make_texture_buffer();
> + fbo = make_fbo();
> + tex_blend = make_texture_blend();
> +}
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> + int samples[4] = { 2, 4, 8, 16 };
> + bool pass = true;
> + uint i, j, k;
> + uint result1[4] = { 47, 35, 63, 255 };
> + uint result2[4] = { 47, 0, 63, 255 };
> + int max_samples;
> +
> + glViewport(0, 0, piglit_width, piglit_height);
> + glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
> +
> + for (i = 0; i < 4 && samples[i] <= max_samples; i++) {
> + GLfloat *tex_data = calloc(piglit_width * piglit_height *
> + (samples[i] + 1) * 4, sizeof(GLfloat));
> +
> + glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA32F, piglit_width, piglit_height,
> + samples[i] + 1, 0, GL_RGBA, GL_FLOAT, tex_data);
> +
> + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
> + glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex_frame);
> + glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples[i],
> + GL_RGBA8, piglit_width, piglit_height, false);
> + glUniform1i(1, samples[i]);
> +
> + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT |
> + GL_STENCIL_BUFFER_BIT);
> +
> + glUseProgram(prog);
> + glDrawArrays(GL_TRIANGLES, 0, 18);
> +
> + 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);
> + pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
> + piglit_present_results();
> +
> + glGetTexImage(GL_TEXTURE_3D, 0, GL_RGBA, GL_FLOAT, tex_data);
> + for (j = 0; j < piglit_height; j++) {
> + for (k = 0; k < piglit_width; k++) {
> + uint l = ((piglit_width * piglit_height * samples[i]) +
> + (j * piglit_width) + k) * 4;
> + uint r = fabs(tex_data[l]) * 255;
> + uint g = fabs(tex_data[l + 1]) * 255;
> + uint b = fabs(tex_data[l + 2]) * 255;
> + uint a = fabs(tex_data[l + 3]) * 255;
> +
> + if ((k < piglit_width / 2) && (r != result1[0] ||
> + g != result1[1] || b != result1[2] || a != result1[3])) {
> + printf("observed %u %u %u %u %u %u\n", j, k, r,
> + g, b, a);
> + printf("expected %u %u %u %u %u %u\n", j, k,
> + result1[0], result1[1], result1[2], result1[3]);
> + pass = false;
> + break;
> + }
> +
> + if ((k > piglit_width / 2) && (r != result2[0] ||
> + g != result2[1] || b != result2[2] || a != result2[3])) {
> + printf("observed %u %u %u %u %u %u\n", j, k, r,
> + g, b, a);
> + printf("expected %u %u %u %u %u %u\n", j, k,
> + result1[0], result1[1], result1[2], result1[3]);
> + pass = false;
> + break;
> + }
> + }
> + if (!pass)
> + break;
> + }
> +
> + free(tex_data);
> + pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
> + if (!pass)
> + break;
> + }
> +
> + return pass ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
>
--
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