diff options
Diffstat (limited to 'source/blender/gpu/tests/gpu_shader_test.cc')
| -rw-r--r-- | source/blender/gpu/tests/gpu_shader_test.cc | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/source/blender/gpu/tests/gpu_shader_test.cc b/source/blender/gpu/tests/gpu_shader_test.cc new file mode 100644 index 00000000000..e8645b89e41 --- /dev/null +++ b/source/blender/gpu/tests/gpu_shader_test.cc @@ -0,0 +1,301 @@ +/* Apache License, Version 2.0 */ + +#include "testing/testing.h" + +#include "GPU_capabilities.h" +#include "GPU_compute.h" +#include "GPU_index_buffer.h" +#include "GPU_shader.h" +#include "GPU_texture.h" +#include "GPU_vertex_buffer.h" +#include "GPU_vertex_format.h" + +#include "MEM_guardedalloc.h" + +#include "gpu_testing.hh" + +#include "GPU_glew.h" + +namespace blender::gpu::tests { + +TEST_F(GPUTest, gpu_shader_compute_2d) +{ + + if (!GPU_compute_shader_support()) { + /* We can't test as a the platform does not support compute shaders. */ + std::cout << "Skipping compute shader test: platform not supported"; + return; + } + + static constexpr uint SIZE = 512; + + /* Build compute shader. */ + const char *compute_glsl = R"( + +layout(local_size_x = 1, local_size_y = 1) in; +layout(rgba32f, binding = 0) uniform image2D img_output; + +void main() { + vec4 pixel = vec4(1.0, 0.5, 0.2, 1.0); + imageStore(img_output, ivec2(gl_GlobalInvocationID.xy), pixel); +} + +)"; + + GPUShader *shader = GPU_shader_create_compute( + compute_glsl, nullptr, nullptr, "gpu_shader_compute_2d"); + EXPECT_NE(shader, nullptr); + + /* Create texture to store result and attach to shader. */ + GPUTexture *texture = GPU_texture_create_2d( + "gpu_shader_compute_2d", SIZE, SIZE, 0, GPU_RGBA32F, nullptr); + EXPECT_NE(texture, nullptr); + + GPU_shader_bind(shader); + GPU_texture_image_bind(texture, GPU_shader_get_texture_binding(shader, "img_output")); + + /* Dispatch compute task. */ + GPU_compute_dispatch(shader, SIZE, SIZE, 1); + + /* Check if compute has been done. */ + GPU_memory_barrier(GPU_BARRIER_TEXTURE_FETCH); + float *data = static_cast<float *>(GPU_texture_read(texture, GPU_DATA_FLOAT, 0)); + EXPECT_NE(data, nullptr); + for (int index = 0; index < SIZE * SIZE; index++) { + EXPECT_FLOAT_EQ(data[index * 4 + 0], 1.0f); + EXPECT_FLOAT_EQ(data[index * 4 + 1], 0.5f); + EXPECT_FLOAT_EQ(data[index * 4 + 2], 0.2f); + EXPECT_FLOAT_EQ(data[index * 4 + 3], 1.0f); + } + MEM_freeN(data); + + /* Cleanup. */ + GPU_shader_unbind(); + GPU_texture_unbind(texture); + GPU_texture_free(texture); + GPU_shader_free(shader); +} + +TEST_F(GPUTest, gpu_shader_compute_1d) +{ + + if (!GPU_compute_shader_support()) { + /* We can't test as a the platform does not support compute shaders. */ + std::cout << "Skipping compute shader test: platform not supported"; + return; + } + + static constexpr uint SIZE = 10; + + /* Build compute shader. */ + const char *compute_glsl = R"( + +layout(local_size_x = 1) in; + +layout(rgba32f, binding = 1) uniform image1D outputVboData; + +void main() { + int index = int(gl_GlobalInvocationID.x); + vec4 pos = vec4(gl_GlobalInvocationID.x); + imageStore(outputVboData, index, pos); +} + +)"; + + GPUShader *shader = GPU_shader_create_compute( + compute_glsl, nullptr, nullptr, "gpu_shader_compute_1d"); + EXPECT_NE(shader, nullptr); + + /* Construct Texture. */ + GPUTexture *texture = GPU_texture_create_1d("gpu_shader_compute_1d", SIZE, 0, GPU_RGBA32F, NULL); + EXPECT_NE(texture, nullptr); + + GPU_shader_bind(shader); + GPU_texture_image_bind(texture, GPU_shader_get_texture_binding(shader, "outputVboData")); + + /* Dispatch compute task. */ + GPU_compute_dispatch(shader, SIZE, 1, 1); + + /* Check if compute has been done. */ + GPU_memory_barrier(GPU_BARRIER_TEXTURE_FETCH); + + /* Create texture to load back result. */ + float *data = static_cast<float *>(GPU_texture_read(texture, GPU_DATA_FLOAT, 0)); + EXPECT_NE(data, nullptr); + for (int index = 0; index < SIZE; index++) { + float expected_value = index; + EXPECT_FLOAT_EQ(data[index * 4 + 0], expected_value); + EXPECT_FLOAT_EQ(data[index * 4 + 1], expected_value); + EXPECT_FLOAT_EQ(data[index * 4 + 2], expected_value); + EXPECT_FLOAT_EQ(data[index * 4 + 3], expected_value); + } + MEM_freeN(data); + + /* Cleanup. */ + GPU_shader_unbind(); + GPU_texture_unbind(texture); + GPU_texture_free(texture); + GPU_shader_free(shader); +} + +TEST_F(GPUTest, gpu_shader_compute_vbo) +{ + + if (!GPU_compute_shader_support()) { + /* We can't test as a the platform does not support compute shaders. */ + std::cout << "Skipping compute shader test: platform not supported"; + return; + } + + static constexpr uint SIZE = 128; + + /* Build compute shader. */ + const char *compute_glsl = R"( + +layout(local_size_x = 1) in; + +layout(std430, binding = 0) writeonly buffer outputVboData +{ + vec4 out_positions[]; +}; + +void main() { + uint index = gl_GlobalInvocationID.x; + vec4 pos = vec4(gl_GlobalInvocationID.x); + out_positions[index] = pos; +} + +)"; + + GPUShader *shader = GPU_shader_create_compute( + compute_glsl, nullptr, nullptr, "gpu_shader_compute_vbo"); + EXPECT_NE(shader, nullptr); + GPU_shader_bind(shader); + + /* Construct VBO. */ + static GPUVertFormat format = {0}; + GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + GPUVertBuf *vbo = GPU_vertbuf_create_with_format_ex(&format, GPU_USAGE_DEVICE_ONLY); + GPU_vertbuf_data_alloc(vbo, SIZE); + GPU_vertbuf_bind_as_ssbo(vbo, GPU_shader_get_ssbo(shader, "outputVboData")); + + /* Dispatch compute task. */ + GPU_compute_dispatch(shader, SIZE, 1, 1); + + /* Check if compute has been done. */ + GPU_memory_barrier(GPU_BARRIER_SHADER_STORAGE); + + /* Download the vertex buffer. */ + const float *data = static_cast<const float *>(GPU_vertbuf_read(vbo)); + ASSERT_NE(data, nullptr); + for (int index = 0; index < SIZE; index++) { + float expected_value = index; + EXPECT_FLOAT_EQ(data[index * 4 + 0], expected_value); + EXPECT_FLOAT_EQ(data[index * 4 + 1], expected_value); + EXPECT_FLOAT_EQ(data[index * 4 + 2], expected_value); + EXPECT_FLOAT_EQ(data[index * 4 + 3], expected_value); + } + + /* Cleanup. */ + GPU_shader_unbind(); + GPU_vertbuf_discard(vbo); + GPU_shader_free(shader); +} + +TEST_F(GPUTest, gpu_shader_compute_ibo) +{ + + if (!GPU_compute_shader_support()) { + /* We can't test as a the platform does not support compute shaders. */ + std::cout << "Skipping compute shader test: platform not supported"; + return; + } + + static constexpr uint SIZE = 128; + + /* Build compute shader. */ + const char *compute_glsl = R"( + +layout(local_size_x = 1) in; + +layout(std430, binding = 1) writeonly buffer outputIboData +{ + uint out_indexes[]; +}; + +void main() { + uint store_index = int(gl_GlobalInvocationID.x); + out_indexes[store_index] = store_index; +} + +)"; + + GPUShader *shader = GPU_shader_create_compute( + compute_glsl, nullptr, nullptr, "gpu_shader_compute_vbo"); + EXPECT_NE(shader, nullptr); + GPU_shader_bind(shader); + + /* Construct IBO. */ + GPUIndexBuf *ibo = GPU_indexbuf_build_on_device(SIZE); + GPU_indexbuf_bind_as_ssbo(ibo, GPU_shader_get_ssbo(shader, "outputIboData")); + + /* Dispatch compute task. */ + GPU_compute_dispatch(shader, SIZE, 1, 1); + + /* Check if compute has been done. */ + GPU_memory_barrier(GPU_BARRIER_SHADER_STORAGE); + + /* Download the index buffer. */ + const uint32_t *data = GPU_indexbuf_read(ibo); + ASSERT_NE(data, nullptr); + for (int index = 0; index < SIZE; index++) { + uint32_t expected = index; + EXPECT_EQ(data[index], expected); + } + + /* Cleanup. */ + GPU_shader_unbind(); + GPU_indexbuf_discard(ibo); + GPU_shader_free(shader); +} + +TEST_F(GPUTest, gpu_shader_ssbo_binding) +{ + if (!GPU_compute_shader_support()) { + /* We can't test as a the platform does not support compute shaders. */ + std::cout << "Skipping compute shader test: platform not supported"; + return; + } + + /* Build compute shader. */ + const char *compute_glsl = R"( + +layout(local_size_x = 1) in; + +layout(std430, binding = 0) buffer ssboBinding0 +{ + int data0[]; +}; +layout(std430, binding = 1) buffer ssboBinding1 +{ + int data1[]; +}; + +void main() { +} + +)"; + + GPUShader *shader = GPU_shader_create_compute(compute_glsl, nullptr, nullptr, "gpu_shader_ssbo"); + EXPECT_NE(shader, nullptr); + GPU_shader_bind(shader); + + EXPECT_EQ(0, GPU_shader_get_ssbo(shader, "ssboBinding0")); + EXPECT_EQ(1, GPU_shader_get_ssbo(shader, "ssboBinding1")); + + /* Cleanup. */ + GPU_shader_unbind(); + GPU_shader_free(shader); +} + +} // namespace blender::gpu::tests |