[Piglit] [PATCH 3/3] arb_compute_shader: Test compute shader synchronization.
Bas Nieuwenhuizen
bas at basnieuwenhuizen.nl
Mon Apr 11 13:45:30 UTC 2016
Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
---
tests/all.py | 1 +
tests/spec/arb_compute_shader/CMakeLists.gl.txt | 1 +
tests/spec/arb_compute_shader/synchronization.c | 658 ++++++++++++++++++++++++
3 files changed, 660 insertions(+)
create mode 100644 tests/spec/arb_compute_shader/synchronization.c
diff --git a/tests/all.py b/tests/all.py
index 72c540c..ca1f319 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -4256,6 +4256,7 @@ with profile.group_manager(
g(['arb_compute_shader-zero-dispatch-size'], 'zero-dispatch-size')
g(['arb_compute_shader-conditional-dispatch'], 'conditional-dispatch')
g(['arb_compute_shader-large-block-size'], 'large-block-size')
+ g(['arb_compute_shader-synchronization'], 'synchronization')
with profile.group_manager(
PiglitGLTest,
diff --git a/tests/spec/arb_compute_shader/CMakeLists.gl.txt b/tests/spec/arb_compute_shader/CMakeLists.gl.txt
index a264626..8932941 100644
--- a/tests/spec/arb_compute_shader/CMakeLists.gl.txt
+++ b/tests/spec/arb_compute_shader/CMakeLists.gl.txt
@@ -20,5 +20,6 @@ piglit_add_executable (arb_compute_shader-render-and-compute render-and-compute.
piglit_add_executable (arb_compute_shader-zero-dispatch-size zero-dispatch-size.c ${depends})
piglit_add_executable (arb_compute_shader-conditional-dispatch conditional-dispatch.c)
piglit_add_executable (arb_compute_shader-large-block-size large-block-size.c)
+piglit_add_executable (arb_compute_shader-synchronization synchronization.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_compute_shader/synchronization.c b/tests/spec/arb_compute_shader/synchronization.c
new file mode 100644
index 0000000..43dda95
--- /dev/null
+++ b/tests/spec/arb_compute_shader/synchronization.c
@@ -0,0 +1,658 @@
+/*
+ * Copyright 2016 Bas Nieuwenhuizen
+ *
+ * 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.
+ */
+
+/*
+ * Tests whether reads and writes are synchronized properly for compute shaders.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_core_version = 42;
+
+ config.window_width = 320;
+ config.window_height = 320;
+ config.window_visual = PIGLIT_GL_VISUAL_RGB;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+const char *compute_ssbo_write_source =
+ "#version 420\n"
+ "#extension GL_ARB_compute_shader : require\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout (local_size_x = 256, local_size_y = 1, local_size_z = 1) in;\n"
+ "layout(binding = 1, std430) buffer Out {\n"
+ " int out_arr[];\n"
+ "};\n"
+ "uniform int value;\n"
+ "void main() {\n"
+ " out_arr[gl_GlobalInvocationID.x] = value;\n"
+ "}\n";
+
+const char *compute_ssbo_copy_source =
+ "#version 420\n"
+ "#extension GL_ARB_compute_shader : require\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout (local_size_x = 256, local_size_y = 1, local_size_z = 1) in;\n"
+ "layout(binding = 0, std430) buffer In {\n"
+ " int in_arr[];\n"
+ "};\n"
+ "layout(binding = 1, std430) buffer Out {\n"
+ " int out_arr[];\n"
+ "};\n"
+ "void main() {\n"
+ " out_arr[gl_GlobalInvocationID.x] =\n"
+ " in_arr[gl_GlobalInvocationID.x];\n"
+ "}\n";
+
+const char *compute_image_write_source =
+ "#version 420\n"
+ "#extension GL_ARB_compute_shader : require\n"
+ "layout (local_size_x = 16, local_size_y = 16, local_size_z = 1) in;\n"
+ "layout(binding = 1, r32i) uniform iimage2D out_img;\n"
+ "uniform int value;\n"
+ "void main() {\n"
+ " imageStore(out_img, ivec2(gl_GlobalInvocationID.xy), ivec4(value));\n"
+ "}\n";
+
+const char *compute_image_copy_source =
+ "#version 420\n"
+ "#extension GL_ARB_compute_shader : require\n"
+ "layout (local_size_x = 16, local_size_y = 16, local_size_z = 1) in;\n"
+ "layout(binding = 0, r32i) uniform iimage2D in_img;\n"
+ "layout(binding = 1, r32i) uniform iimage2D out_img;\n"
+ "void main() {\n"
+ " imageStore(out_img, ivec2(gl_GlobalInvocationID.xy),\n"
+ " imageLoad(in_img, ivec2(gl_GlobalInvocationID.xy)));\n"
+ "}\n";
+
+const char *vs_passthrough =
+ "#version 420\n"
+ "in vec4 piglit_vertex;\n"
+ "void main() {\n"
+ " gl_Position = piglit_vertex;\n"
+ "}\n";
+
+const char *graphics_ssbo_write_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout(binding = 1, std430) buffer Out {\n"
+ " int out_arr[];\n"
+ "};\n"
+ "uniform int value;\n"
+ "void main() {\n"
+ " int index = int(gl_FragCoord.y) * 64 + int(gl_FragCoord.x);\n"
+ " out_arr[index] = value;\n"
+ "}\n";
+
+const char *graphics_ssbo_copy_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout(binding = 0, std430) buffer In {\n"
+ " int in_arr[];\n"
+ "};\n"
+ "layout(binding = 1, std430) buffer Out {\n"
+ " int out_arr[];\n"
+ "};\n"
+ "void main() {\n"
+ " int index = int(gl_FragCoord.y) * 64 + int(gl_FragCoord.x);\n"
+ " out_arr[index] = in_arr[index];\n"
+ "}\n";
+
+const char *graphics_image_write_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout(binding = 1, r32i) uniform iimage2D out_img;\n"
+ "uniform int value;\n"
+ "void main() {\n"
+ " imageStore(out_img, ivec2(gl_FragCoord.xy), ivec4(value));\n"
+ "}\n";
+
+const char *graphics_image_copy_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout(binding = 0, r32i) uniform iimage2D in_img;\n"
+ "layout(binding = 1, r32i) uniform iimage2D out_img;\n"
+ "void main() {\n"
+ " imageStore(out_img, ivec2(gl_FragCoord.xy),\n"
+ " imageLoad(in_img, ivec2(gl_FragCoord.xy)));\n"
+ "}\n";
+
+const char *graphics_fbo_write_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout(binding = 1, r32i) uniform iimage2D out_img;\n"
+ "uniform int value;\n"
+ "out int dest;\n"
+ "void main() {\n"
+ " dest = value;\n"
+ "}\n";
+
+const char *graphics_fbo_copy_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "layout(binding = 0, r32i) uniform iimage2D in_img;\n"
+ "out int dest;\n"
+ "void main() {\n"
+ " dest = imageLoad(in_img, ivec2(gl_FragCoord.xy)).x;\n"
+ "}\n";
+
+const char *vs_write_source =
+ "#version 420\n"
+ "out int out_value;\n"
+ "uniform int value;\n"
+ "void main() {\n"
+ " out_value = value;\n"
+ " gl_Position = vec4(0.0);\n"
+ "}\n";
+
+const char *vs_copy_source =
+ "#version 420\n"
+ "#extension GL_ARB_shader_storage_buffer_object : require\n"
+ "out int out_value;\n"
+ "in int in_value;\n"
+ "void main() {\n"
+ " out_value = in_value;\n"
+ " gl_Position = vec4(0.0);\n"
+ "}\n";
+
+enum piglit_result
+piglit_display(void)
+{
+ return PIGLIT_FAIL;
+}
+
+struct test_context {
+ GLuint compute_ssbo_write;
+ GLuint compute_ssbo_copy;
+
+ GLuint compute_image_write;
+ GLuint compute_image_copy;
+
+ GLuint graphics_ssbo_write;
+ GLuint graphics_ssbo_copy;
+
+ GLuint graphics_image_write;
+ GLuint graphics_image_copy;
+
+ GLuint graphics_feedback_write;
+ GLuint graphics_feedback_copy;
+
+ GLuint graphics_fbo_write;
+ GLuint graphics_fbo_copy;
+
+ GLuint buffers[2];
+ GLuint textures[2];
+
+ GLuint empty_fbo;
+ GLuint fbos[2];
+};
+
+static unsigned create_compute_program(const char *source)
+{
+ GLuint shader, prog;
+
+ shader = piglit_compile_shader_text(GL_COMPUTE_SHADER, source);
+ prog = piglit_link_simple_program_multiple_shaders(shader, 0);
+ glDeleteShader(shader);
+
+ return prog;
+}
+
+
+static unsigned create_feedback_program(const char *source)
+{
+ GLuint prog, shader;
+ const GLchar *feedback = "out_value";
+
+ shader = piglit_compile_shader_text(GL_VERTEX_SHADER, source);
+
+ prog = glCreateProgram();
+ glAttachShader(prog, shader);
+
+ glTransformFeedbackVaryings(prog, 1, &feedback, GL_INTERLEAVED_ATTRIBS);
+
+ glLinkProgram(prog);
+ return prog;
+}
+
+static void init_test_context(struct test_context *ctx)
+{
+ int i;
+
+ ctx->compute_ssbo_write = create_compute_program(compute_ssbo_write_source);
+ ctx->compute_ssbo_copy = create_compute_program(compute_ssbo_copy_source);
+ ctx->compute_image_write = create_compute_program(compute_image_write_source);
+ ctx->compute_image_copy = create_compute_program(compute_image_copy_source);
+ ctx->graphics_ssbo_write =
+ piglit_build_simple_program(vs_passthrough,
+ graphics_ssbo_write_source);
+ ctx->graphics_ssbo_copy =
+ piglit_build_simple_program(vs_passthrough,
+ graphics_ssbo_copy_source);
+ ctx->graphics_image_write =
+ piglit_build_simple_program(vs_passthrough,
+ graphics_image_write_source);
+ ctx->graphics_image_copy =
+ piglit_build_simple_program(vs_passthrough,
+ graphics_image_copy_source);
+ ctx->graphics_fbo_write =
+ piglit_build_simple_program(vs_passthrough,
+ graphics_fbo_write_source);
+ ctx->graphics_fbo_copy =
+ piglit_build_simple_program(vs_passthrough,
+ graphics_fbo_copy_source);
+ ctx->graphics_feedback_write = create_feedback_program(vs_write_source);
+ ctx->graphics_feedback_copy = create_feedback_program(vs_copy_source);
+
+ glGenBuffers(2, ctx->buffers);
+ for (i = 0; i < 2; ++i) {
+ glBindBuffer(GL_SHADER_STORAGE_BUFFER, ctx->buffers[i]);
+ glBufferData(GL_SHADER_STORAGE_BUFFER, 16384, NULL,
+ GL_STREAM_DRAW);
+ }
+
+ glGenTextures(2, ctx->textures);
+ glGenFramebuffers(2, ctx->fbos);
+
+ for (i = 0; i < 2; ++i) {
+ glBindTexture(GL_TEXTURE_2D, ctx->textures[i]);
+ glTexStorage2D(GL_TEXTURE_2D, 1, GL_R32I, 64, 64);
+
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->fbos[i]);
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+ GL_TEXTURE_2D, ctx->textures[i], 0);
+ }
+
+ glGenFramebuffers(1, &ctx->empty_fbo);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glFramebufferParameteri(GL_FRAMEBUFFER, GL_FRAMEBUFFER_DEFAULT_WIDTH, 64);
+ glFramebufferParameteri(GL_FRAMEBUFFER, GL_FRAMEBUFFER_DEFAULT_HEIGHT, 64);
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+}
+
+static void deinit_test_context(struct test_context *ctx)
+{
+ glDeleteProgram(ctx->compute_ssbo_write);
+ glDeleteProgram(ctx->compute_ssbo_copy);
+ glDeleteProgram(ctx->compute_image_write);
+ glDeleteProgram(ctx->compute_image_copy);
+ glDeleteProgram(ctx->graphics_ssbo_write);
+ glDeleteProgram(ctx->graphics_ssbo_copy);
+ glDeleteProgram(ctx->graphics_image_write);
+ glDeleteProgram(ctx->graphics_image_copy);
+ glDeleteProgram(ctx->graphics_feedback_write);
+ glDeleteProgram(ctx->graphics_feedback_copy);
+ glDeleteProgram(ctx->graphics_fbo_write);
+ glDeleteProgram(ctx->graphics_fbo_copy);
+
+ glDeleteBuffers(2, ctx->buffers);
+ glDeleteTextures(2, ctx->textures);
+
+ glDeleteFramebuffers(1, &ctx->empty_fbo);
+ glDeleteFramebuffers(2, ctx->fbos);
+}
+
+static void setup_test(struct test_context *ctx)
+{
+ int i;
+ int clear_colors[4] = {0};
+
+ for(i = 0; i < 2; ++i) {
+ int *data;
+ glBindBuffer(GL_SHADER_STORAGE_BUFFER, ctx->buffers[i]);
+ data = (int*)glMapBuffer(GL_SHADER_STORAGE_BUFFER, GL_WRITE_ONLY);
+
+ memset(data, i ? 127 : 0, 16384);
+
+ glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
+ }
+ glViewport(0, 0, 64, 64);
+ for(i = 0; i < 2; ++i) {
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->fbos[i]);
+ glClearBufferiv(GL_COLOR, 0, clear_colors);
+ }
+ glFinish();
+}
+
+static bool check_buffer(struct test_context *ctx, unsigned buffer, int value,
+ const char *test_name)
+{
+ int *data;
+ int i;
+ bool result = true;
+
+ glFinish();
+
+ glBindBuffer(GL_SHADER_STORAGE_BUFFER, ctx->buffers[buffer]);
+ data = (int*)glMapBuffer(GL_SHADER_STORAGE_BUFFER, GL_READ_ONLY);
+
+ for (i = 0; i < 4096; ++i)
+ if (data[i] != value) {
+ result = false;
+ break;
+ }
+
+ glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
+
+ piglit_report_subtest_result(result ? PIGLIT_PASS : PIGLIT_FAIL,
+ "%s", test_name);
+
+ return result;
+}
+
+static bool check_image(struct test_context *ctx, unsigned image, int value,
+ const char *test_name)
+{
+ int *data = malloc(64 * 64 * sizeof(int));
+ int i;
+ bool result = true;
+
+ glFinish();
+
+ glBindTexture(GL_TEXTURE_2D, ctx->textures[image]);
+ glGetTexImage(GL_TEXTURE_2D, 0, GL_RED_INTEGER, GL_INT, data);
+
+ for (i = 0; i < 4096; ++i)
+ if (data[i] != value) {
+ result = false;
+ break;
+ }
+ piglit_report_subtest_result(result ? PIGLIT_PASS : PIGLIT_FAIL,
+ "%s", test_name);
+
+ free(data);
+ return result;
+}
+
+static void compute_ssbo_write(struct test_context *ctx, int value)
+{
+ glUseProgram(ctx->compute_ssbo_write);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ctx->buffers[0]);
+ glUniform1i(glGetUniformLocation(ctx->compute_ssbo_write, "value"), value);
+ glDispatchCompute(16, 1, 1);
+
+}
+
+static void compute_ssbo_copy(struct test_context *ctx)
+{
+ glUseProgram(ctx->compute_ssbo_copy);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, ctx->buffers[0]);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ctx->buffers[1]);
+ glDispatchCompute(16, 1, 1);
+
+}
+
+static void compute_image_write(struct test_context *ctx, int value)
+{
+ glUseProgram(ctx->compute_image_write);
+ glBindImageTexture(1, ctx->textures[0], 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_R32I);
+ glUniform1i(glGetUniformLocation(ctx->compute_image_write, "value"), value);
+ glDispatchCompute(4, 4, 1);
+
+}
+
+static void compute_image_copy(struct test_context *ctx)
+{
+ glUseProgram(ctx->compute_image_copy);
+ glBindImageTexture(0, ctx->textures[0], 0, GL_FALSE, 0, GL_READ_ONLY, GL_R32I);
+ glBindImageTexture(1, ctx->textures[1], 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_R32I);
+ glDispatchCompute(4, 4, 1);
+
+}
+
+static void graphics_ssbo_write(struct test_context *ctx, int value)
+{
+ glUseProgram(ctx->graphics_ssbo_write);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ctx->buffers[0]);
+ glUniform1i(glGetUniformLocation(ctx->graphics_ssbo_write, "value"), value);
+ piglit_draw_rect(-1, -1, 2, 2);
+
+}
+
+static void graphics_ssbo_copy(struct test_context *ctx)
+{
+ glUseProgram(ctx->graphics_ssbo_copy);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, ctx->buffers[0]);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ctx->buffers[1]);
+ piglit_draw_rect(-1, -1, 2, 2);
+
+}
+
+static void graphics_image_write(struct test_context *ctx, int value)
+{
+ glUseProgram(ctx->graphics_image_write);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glBindImageTexture(1, ctx->textures[0], 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_R32I);
+ glUniform1i(glGetUniformLocation(ctx->graphics_image_write, "value"), value);
+ piglit_draw_rect(-1, -1, 2, 2);
+
+}
+
+static void graphics_image_copy(struct test_context *ctx)
+{
+ glUseProgram(ctx->graphics_image_copy);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glBindImageTexture(0, ctx->textures[0], 0, GL_FALSE, 0, GL_READ_ONLY, GL_R32I);
+ glBindImageTexture(1, ctx->textures[1], 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_R32I);
+ piglit_draw_rect(-1, -1, 2, 2);
+}
+
+static void graphics_fbo_write(struct test_context *ctx, int value)
+{
+ glUseProgram(ctx->graphics_fbo_write);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->fbos[0]);
+ glUniform1i(glGetUniformLocation(ctx->graphics_fbo_write, "value"), value);
+ piglit_draw_rect(-1, -1, 2, 2);
+
+}
+
+static void graphics_fbo_copy(struct test_context *ctx)
+{
+ glUseProgram(ctx->graphics_fbo_copy);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->fbos[1]);
+ glBindImageTexture(0, ctx->textures[0], 0, GL_FALSE, 0, GL_READ_ONLY, GL_R32I);
+ piglit_draw_rect(-1, -1, 2, 2);
+}
+
+static void graphics_feedback_write(struct test_context *ctx, int value)
+{
+ glUseProgram(ctx->graphics_feedback_write);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glUniform1i(glGetUniformLocation(ctx->graphics_feedback_write, "value"), value);
+ glEnable(GL_RASTERIZER_DISCARD);
+ glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, ctx->buffers[0]);
+ glBeginTransformFeedback(GL_POINTS);
+ glDrawArrays(GL_POINTS, 0, 4096);
+ glEndTransformFeedback();
+ glDisable(GL_RASTERIZER_DISCARD);
+}
+
+static void graphics_feedback_copy(struct test_context *ctx)
+{
+ glUseProgram(ctx->graphics_feedback_copy);
+ glBindFramebuffer(GL_FRAMEBUFFER, ctx->empty_fbo);
+ glEnable(GL_RASTERIZER_DISCARD);
+ glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, ctx->buffers[1]);
+ glBeginTransformFeedback(GL_POINTS);
+ glEnableVertexAttribArray(0);
+ glBindBuffer(GL_ARRAY_BUFFER, ctx->buffers[0]);
+ glVertexAttribIPointer(0, 1, GL_INT, 4, 0);
+ glDrawArrays(GL_POINTS, 0, 4096);
+ glEndTransformFeedback();
+ glDisableVertexAttribArray(0);
+ glDisable(GL_RASTERIZER_DISCARD);
+}
+
+struct method {
+ void (*write)(struct test_context*, int);
+ void (*copy)(struct test_context*);
+ const char *name;
+};
+
+static struct method buffer_methods[] = {
+ {compute_ssbo_write, compute_ssbo_copy, "compute-ssbo"},
+ {graphics_ssbo_write, graphics_ssbo_copy, "graphics-ssbo"},
+ {graphics_feedback_write, graphics_feedback_copy, "graphics-feedback"}
+};
+
+static struct method image_methods[] = {
+ {compute_image_write, compute_image_copy, "compute-image"},
+ {graphics_image_write, graphics_image_copy, "graphics-image"},
+ {graphics_fbo_write, graphics_fbo_copy, "graphics-fbo"}
+};
+
+static void synchronize(void* a, void *b) {
+ bool need_memory_barrier = false;
+ GLbitfield memory_barrier_bits = 0;
+
+ if (a == compute_ssbo_write || a == graphics_ssbo_write ||
+ b == compute_ssbo_write || b == graphics_ssbo_write ||
+ a == compute_image_write || a == graphics_image_write ||
+ b == compute_image_write || b == graphics_image_write)
+ need_memory_barrier = true;
+
+ if (b == compute_ssbo_write || b == compute_ssbo_copy ||
+ b == graphics_ssbo_write || b == graphics_ssbo_copy)
+ memory_barrier_bits |= GL_SHADER_STORAGE_BARRIER_BIT;
+
+ if (b == compute_image_write || b == compute_image_copy ||
+ b == graphics_image_write || b == graphics_image_copy ||
+ b == graphics_fbo_copy)
+ memory_barrier_bits |= GL_SHADER_IMAGE_ACCESS_BARRIER_BIT;
+
+ if (b == graphics_feedback_copy)
+ memory_barrier_bits |= GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT;
+
+ if (b == graphics_feedback_write)
+ memory_barrier_bits |= GL_TRANSFORM_FEEDBACK_BARRIER_BIT;
+
+ if (b == graphics_fbo_write)
+ memory_barrier_bits |= GL_FRAMEBUFFER_BARRIER_BIT;
+
+ if (need_memory_barrier)
+ glMemoryBarrier(memory_barrier_bits);
+}
+static bool test_buffers(struct test_context *ctx, const struct method* a,
+ const struct method *b)
+{
+ bool result = true;
+ char name[1024];
+
+ setup_test(ctx);
+ a->write(ctx, 1);
+ synchronize(a->write, b->copy);
+ b->copy(ctx);
+ sprintf(name, "%s-%s-read-after-write", a->name, b->name);
+ result &= check_buffer(ctx, 1, 1, name);
+
+ setup_test(ctx);
+ a->write(ctx, 1);
+ synchronize(a->write, b->write);
+ b->write(ctx, 2);
+ sprintf(name, "%s-%s-write-after-write", a->name, b->name);
+ result &= check_buffer(ctx, 0, 2, name);
+
+ setup_test(ctx);
+ a->copy(ctx);
+ synchronize(a->copy, b->write);
+ b->write(ctx, 2);
+ sprintf(name, "%s-%s-write-after-read", a->name, b->name);
+ result &= check_buffer(ctx, 1, 0, name);
+
+ return result;
+}
+
+static bool test_images(struct test_context *ctx, const struct method* a,
+ const struct method *b)
+{
+ bool result = true;
+ char name[1024];
+
+ setup_test(ctx);
+ a->write(ctx, 1);
+ synchronize(a->write, b->copy);
+ b->copy(ctx);
+ sprintf(name, "%s-%s-read-after-write", a->name, b->name);
+ result &= check_image(ctx, 1, 1, name);
+
+ setup_test(ctx);
+ a->write(ctx, 1);
+ synchronize(a->write, b->write);
+ b->write(ctx, 2);
+ sprintf(name, "%s-%s-write-after-write", a->name, b->name);
+ result &= check_image(ctx, 0, 2, name);
+
+ setup_test(ctx);
+ a->copy(ctx);
+ synchronize(a->copy, b->write);
+ b->write(ctx, 2);
+ sprintf(name, "%s-%s-write-after-read", a->name, b->name);
+ result &= check_image(ctx, 1, 0, name);
+
+ return result;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ struct test_context ctx;
+ bool result = true;
+ GLuint vao;
+ int i, j;
+ int buffer_method_count = sizeof(buffer_methods) /
+ sizeof(buffer_methods[0]);
+ int image_method_count = sizeof(image_methods) /
+ sizeof(image_methods[0]);
+
+ piglit_require_gl_version(42);
+ piglit_require_extension("GL_ARB_compute_shader");
+ piglit_require_extension("GL_ARB_shader_storage_buffer_object");
+ piglit_require_extension("GL_ARB_framebuffer_no_attachments");
+
+ glGenVertexArrays(1, &vao);
+ glBindVertexArray(vao);
+
+ init_test_context(&ctx);
+ for (i = 0; i < buffer_method_count; ++i) {
+ for (j = 0; j < buffer_method_count; ++j) {
+ result &= test_buffers(&ctx, &buffer_methods[i],
+ &buffer_methods[j]);
+ }
+ }
+ for (i = 0; i < image_method_count; ++i) {
+ for (j = 0; j < image_method_count; ++j) {
+ result &= test_images(&ctx, &image_methods[i],
+ &image_methods[j]);
+ }
+ }
+ deinit_test_context(&ctx);
+
+ glDeleteVertexArrays(1, &vao);
+ piglit_report_result(result ? PIGLIT_PASS : PIGLIT_FAIL);
+}
--
2.8.0
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