e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "testing/testing.h"
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#include "GPU_capabilities.h"
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#include "GPU_compute.h"
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#include "GPU_vertex_buffer.h"
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#include "GPU_vertex_format.h"
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#include "BLI_index_range.hh"
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#include "BLI_math_vector_types.hh"
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#include "gpu_testing.hh"
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namespace blender::gpu::tests {
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static void test_buffer_texture()
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{
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if (!GPU_compute_shader_support() && !GPU_shader_storage_buffer_objects_support()) {
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/* We can't test as a the platform does not support compute shaders. */
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std::cout << "Skipping compute shader test: platform not supported";
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GTEST_SKIP();
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}
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/* Build compute shader. */
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GPUShader *shader = GPU_shader_create_from_info_name("gpu_buffer_texture_test");
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EXPECT_NE(shader, nullptr);
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GPU_shader_bind(shader);
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/* Vertex buffer. */
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GPUVertFormat format = {};
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uint value_pos = GPU_vertformat_attr_add(&format, "value", GPU_COMP_F32, 1, GPU_FETCH_FLOAT);
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GPUVertBuf *vertex_buffer = GPU_vertbuf_create_with_format_ex(
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&format, GPU_USAGE_FLAG_BUFFER_TEXTURE_ONLY);
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float4 value = float4(42.42, 23.23, 1.0, -1.0);
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GPU_vertbuf_data_alloc(vertex_buffer, 4);
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GPU_vertbuf_attr_fill(vertex_buffer, value_pos, &value);
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GPU_vertbuf_bind_as_texture(vertex_buffer,
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GPU_shader_get_sampler_binding(shader, "bufferTexture"));
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/* Construct SSBO. */
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GPUStorageBuf *ssbo = GPU_storagebuf_create_ex(
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4 * sizeof(float), nullptr, GPU_USAGE_DEVICE_ONLY, __func__);
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GPU_storagebuf_bind(ssbo, GPU_shader_get_ssbo_binding(shader, "data_out"));
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/* Dispatch compute task. */
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GPU_compute_dispatch(shader, 4, 1, 1);
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/* Check if compute has been done. */
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GPU_memory_barrier(GPU_BARRIER_BUFFER_UPDATE);
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/* Download the storage buffer. */
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float4 read_data;
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GPU_storagebuf_read(ssbo, read_data);
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EXPECT_EQ(read_data, value);
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/* Cleanup. */
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GPU_shader_unbind();
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GPU_storagebuf_free(ssbo);
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GPU_vertbuf_discard(vertex_buffer);
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GPU_shader_free(shader);
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}
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GPU_TEST(buffer_texture)
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} // namespace blender::gpu::tests
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