7fb1f060ff
This patch adds initial support for compute shaders to the vulkan backend. As the development is oriented to the test- cases we have the implementation is limited to what is used there. It has been validated that with this patch that the following test cases are running as expected - `GPUVulkanTest.gpu_shader_compute_vbo` - `GPUVulkanTest.gpu_shader_compute_ibo` - `GPUVulkanTest.gpu_shader_compute_ssbo` - `GPUVulkanTest.gpu_storage_buffer_create_update_read` - `GPUVulkanTest.gpu_shader_compute_2d` This patch includes: - Allocating VkBuffer on device. - Uploading data from CPU to VkBuffer. - Binding VkBuffer as SSBO to a compute shader. - Execute compute shader and altering VkBuffer. - Download the VkBuffer to CPU ram. - Validate that it worked. - Use device only vertex buffer as SSBO - Use device only index buffer as SSBO - Use device only image buffers GHOST API has been changed as the original design was created before we even had support for compute shaders in blender. The function `GHOST_getVulkanBackbuffer` has been separated to retrieve the command buffer without a backbuffer (`GHOST_getVulkanCommandBuffer`). In order to do correct command buffer processing we needed access to the queue owned by GHOST. This is returned as part of the `GHOST_getVulkanHandles` function. Open topics (not considered part of this patch) - Memory barriers & command buffer encoding - Indirect compute dispatching - Rest of the test cases - Data conversions when requested data format is different than on device. - GPUVulkanTest.gpu_shader_compute_1d is supported on AMD devices. NVIDIA doesn't seem to support 1d textures. Pull-request: #104518
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
/* SPDX-License-Identifier: Apache-2.0 */
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#include "testing/testing.h"
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#include "GPU_storage_buffer.h"
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#include "BLI_vector.hh"
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#include "gpu_testing.hh"
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namespace blender::gpu::tests {
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constexpr size_t SIZE = 128;
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constexpr size_t SIZE_IN_BYTES = SIZE * sizeof(int);
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static Vector<int32_t> test_data()
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{
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Vector<int32_t> data;
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for (int i : IndexRange(SIZE)) {
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data.append(i);
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}
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return data;
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}
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static void test_gpu_storage_buffer_create_update_read()
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{
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GPUStorageBuf *ssbo = GPU_storagebuf_create_ex(
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SIZE_IN_BYTES, nullptr, GPU_USAGE_STATIC, __func__);
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EXPECT_NE(ssbo, nullptr);
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/* Upload some dummy data. */
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const Vector<int32_t> data = test_data();
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GPU_storagebuf_update(ssbo, data.data());
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/* Read back data from SSBO. */
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Vector<int32_t> read_data;
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read_data.resize(SIZE, 0);
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GPU_storagebuf_read(ssbo, read_data.data());
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/* Check if data is the same.*/
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for (int i : IndexRange(SIZE)) {
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EXPECT_EQ(data[i], read_data[i]);
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}
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GPU_storagebuf_free(ssbo);
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}
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GPU_TEST(gpu_storage_buffer_create_update_read);
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} // namespace blender::gpu::tests
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