| // Copyright 2019 The Dawn Authors | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // http://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software | |
| // distributed under the License is distributed on an "AS IS" BASIS, | |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| // See the License for the specific language governing permissions and | |
| // limitations under the License. | |
| #include "common/Assert.h" | |
| #include "common/Constants.h" | |
| #include "common/Math.h" | |
| #include "tests/DawnTest.h" | |
| #include "utils/ComboRenderPipelineDescriptor.h" | |
| #include "utils/WGPUHelpers.h" | |
| class GpuMemorySyncTests : public DawnTest { | |
| protected: | |
| wgpu::Buffer CreateBuffer() { | |
| wgpu::BufferDescriptor srcDesc; | |
| srcDesc.size = 4; | |
| srcDesc.usage = | |
| wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst | wgpu::BufferUsage::Storage; | |
| wgpu::Buffer buffer = device.CreateBuffer(&srcDesc); | |
| int myData = 0; | |
| queue.WriteBuffer(buffer, 0, &myData, sizeof(myData)); | |
| return buffer; | |
| } | |
| std::tuple<wgpu::ComputePipeline, wgpu::BindGroup> CreatePipelineAndBindGroupForCompute( | |
| const wgpu::Buffer& buffer) { | |
| wgpu::ShaderModule csModule = utils::CreateShaderModule(device, R"( | |
| struct Data { | |
| a : i32; | |
| }; | |
| [[group(0), binding(0)]] var<storage, read_write> data : Data; | |
| [[stage(compute), workgroup_size(1)]] fn main() { | |
| data.a = data.a + 1; | |
| })"); | |
| wgpu::ComputePipelineDescriptor cpDesc; | |
| cpDesc.compute.module = csModule; | |
| cpDesc.compute.entryPoint = "main"; | |
| wgpu::ComputePipeline pipeline = device.CreateComputePipeline(&cpDesc); | |
| wgpu::BindGroup bindGroup = | |
| utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0), {{0, buffer}}); | |
| return std::make_tuple(pipeline, bindGroup); | |
| } | |
| std::tuple<wgpu::RenderPipeline, wgpu::BindGroup> CreatePipelineAndBindGroupForRender( | |
| const wgpu::Buffer& buffer, | |
| wgpu::TextureFormat colorFormat) { | |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"( | |
| [[stage(vertex)]] fn main() -> [[builtin(position)]] vec4<f32> { | |
| return vec4<f32>(0.0, 0.0, 0.0, 1.0); | |
| })"); | |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( | |
| struct Data { | |
| i : i32; | |
| }; | |
| [[group(0), binding(0)]] var<storage, read_write> data : Data; | |
| [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> { | |
| data.i = data.i + 1; | |
| return vec4<f32>(f32(data.i) / 255.0, 0.0, 0.0, 1.0); | |
| })"); | |
| utils::ComboRenderPipelineDescriptor rpDesc; | |
| rpDesc.vertex.module = vsModule; | |
| rpDesc.cFragment.module = fsModule; | |
| rpDesc.primitive.topology = wgpu::PrimitiveTopology::PointList; | |
| rpDesc.cTargets[0].format = colorFormat; | |
| wgpu::RenderPipeline pipeline = device.CreateRenderPipeline(&rpDesc); | |
| wgpu::BindGroup bindGroup = | |
| utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0), {{0, buffer}}); | |
| return std::make_tuple(pipeline, bindGroup); | |
| } | |
| }; | |
| // Clear storage buffer with zero. Then read data, add one, and write the result to storage buffer | |
| // in compute pass. Iterate this read-add-write steps per compute pass a few time. The successive | |
| // iteration reads the result in buffer from last iteration, which makes the iterations a data | |
| // dependency chain. The test verifies that data in buffer among iterations in compute passes is | |
| // correctly synchronized. | |
| TEST_P(GpuMemorySyncTests, ComputePass) { | |
| // Create pipeline, bind group, and buffer for compute pass. | |
| wgpu::Buffer buffer = CreateBuffer(); | |
| wgpu::ComputePipeline compute; | |
| wgpu::BindGroup bindGroup; | |
| std::tie(compute, bindGroup) = CreatePipelineAndBindGroupForCompute(buffer); | |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); | |
| // Iterate the read-add-write operations in compute pass a few times. | |
| int iteration = 3; | |
| for (int i = 0; i < iteration; ++i) { | |
| wgpu::ComputePassEncoder pass = encoder.BeginComputePass(); | |
| pass.SetPipeline(compute); | |
| pass.SetBindGroup(0, bindGroup); | |
| pass.Dispatch(1); | |
| pass.EndPass(); | |
| } | |
| wgpu::CommandBuffer commands = encoder.Finish(); | |
| queue.Submit(1, &commands); | |
| // Verify the result. | |
| EXPECT_BUFFER_U32_EQ(iteration, buffer, 0); | |
| } | |
| // Clear storage buffer with zero. Then read data, add one, and write the result to storage buffer | |
| // in render pass. Iterate this read-add-write steps per render pass a few time. The successive | |
| // iteration reads the result in buffer from last iteration, which makes the iterations a data | |
| // dependency chain. In addition, color output by fragment shader depends on the data in storage | |
| // buffer, so we can check color in render target to verify that data in buffer among iterations in | |
| // render passes is correctly synchronized. | |
| TEST_P(GpuMemorySyncTests, RenderPass) { | |
| // Create pipeline, bind group, and buffer for render pass. | |
| wgpu::Buffer buffer = CreateBuffer(); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); | |
| wgpu::RenderPipeline render; | |
| wgpu::BindGroup bindGroup; | |
| std::tie(render, bindGroup) = | |
| CreatePipelineAndBindGroupForRender(buffer, renderPass.colorFormat); | |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); | |
| // Iterate the read-add-write operations in render pass a few times. | |
| int iteration = 3; | |
| for (int i = 0; i < iteration; ++i) { | |
| wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass.SetPipeline(render); | |
| pass.SetBindGroup(0, bindGroup); | |
| pass.Draw(1); | |
| pass.EndPass(); | |
| } | |
| wgpu::CommandBuffer commands = encoder.Finish(); | |
| queue.Submit(1, &commands); | |
| // Verify the result. | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8(iteration, 0, 0, 255), renderPass.color, 0, 0); | |
| } | |
| // Write into a storage buffer in a render pass. Then read that data in a compute | |
| // pass. And verify the data flow is correctly synchronized. | |
| TEST_P(GpuMemorySyncTests, RenderPassToComputePass) { | |
| // Create pipeline, bind group, and buffer for render pass and compute pass. | |
| wgpu::Buffer buffer = CreateBuffer(); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); | |
| wgpu::RenderPipeline render; | |
| wgpu::BindGroup bindGroup0; | |
| std::tie(render, bindGroup0) = | |
| CreatePipelineAndBindGroupForRender(buffer, renderPass.colorFormat); | |
| wgpu::ComputePipeline compute; | |
| wgpu::BindGroup bindGroup1; | |
| std::tie(compute, bindGroup1) = CreatePipelineAndBindGroupForCompute(buffer); | |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); | |
| // Write data into a storage buffer in render pass. | |
| wgpu::RenderPassEncoder pass0 = encoder.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass0.SetPipeline(render); | |
| pass0.SetBindGroup(0, bindGroup0); | |
| pass0.Draw(1); | |
| pass0.EndPass(); | |
| // Read that data in compute pass. | |
| wgpu::ComputePassEncoder pass1 = encoder.BeginComputePass(); | |
| pass1.SetPipeline(compute); | |
| pass1.SetBindGroup(0, bindGroup1); | |
| pass1.Dispatch(1); | |
| pass1.EndPass(); | |
| wgpu::CommandBuffer commands = encoder.Finish(); | |
| queue.Submit(1, &commands); | |
| // Verify the result. | |
| EXPECT_BUFFER_U32_EQ(2, buffer, 0); | |
| } | |
| // Write into a storage buffer in a compute pass. Then read that data in a render | |
| // pass. And verify the data flow is correctly synchronized. | |
| TEST_P(GpuMemorySyncTests, ComputePassToRenderPass) { | |
| // Create pipeline, bind group, and buffer for compute pass and render pass. | |
| wgpu::Buffer buffer = CreateBuffer(); | |
| wgpu::ComputePipeline compute; | |
| wgpu::BindGroup bindGroup1; | |
| std::tie(compute, bindGroup1) = CreatePipelineAndBindGroupForCompute(buffer); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); | |
| wgpu::RenderPipeline render; | |
| wgpu::BindGroup bindGroup0; | |
| std::tie(render, bindGroup0) = | |
| CreatePipelineAndBindGroupForRender(buffer, renderPass.colorFormat); | |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); | |
| // Write data into a storage buffer in compute pass. | |
| wgpu::ComputePassEncoder pass0 = encoder.BeginComputePass(); | |
| pass0.SetPipeline(compute); | |
| pass0.SetBindGroup(0, bindGroup1); | |
| pass0.Dispatch(1); | |
| pass0.EndPass(); | |
| // Read that data in render pass. | |
| wgpu::RenderPassEncoder pass1 = encoder.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass1.SetPipeline(render); | |
| pass1.SetBindGroup(0, bindGroup0); | |
| pass1.Draw(1); | |
| pass1.EndPass(); | |
| wgpu::CommandBuffer commands = encoder.Finish(); | |
| queue.Submit(1, &commands); | |
| // Verify the result. | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8(2, 0, 0, 255), renderPass.color, 0, 0); | |
| } | |
| DAWN_INSTANTIATE_TEST(GpuMemorySyncTests, | |
| D3D12Backend(), | |
| MetalBackend(), | |
| OpenGLBackend(), | |
| OpenGLESBackend(), | |
| VulkanBackend()); | |
| class StorageToUniformSyncTests : public DawnTest { | |
| protected: | |
| void CreateBuffer() { | |
| wgpu::BufferDescriptor bufferDesc; | |
| bufferDesc.size = sizeof(float); | |
| bufferDesc.usage = wgpu::BufferUsage::Storage | wgpu::BufferUsage::Uniform; | |
| mBuffer = device.CreateBuffer(&bufferDesc); | |
| } | |
| std::tuple<wgpu::ComputePipeline, wgpu::BindGroup> CreatePipelineAndBindGroupForCompute() { | |
| wgpu::ShaderModule csModule = utils::CreateShaderModule(device, R"( | |
| struct Data { | |
| a : f32; | |
| }; | |
| [[group(0), binding(0)]] var<storage, read_write> data : Data; | |
| [[stage(compute), workgroup_size(1)]] fn main() { | |
| data.a = 1.0; | |
| })"); | |
| wgpu::ComputePipelineDescriptor cpDesc; | |
| cpDesc.compute.module = csModule; | |
| cpDesc.compute.entryPoint = "main"; | |
| wgpu::ComputePipeline pipeline = device.CreateComputePipeline(&cpDesc); | |
| wgpu::BindGroup bindGroup = | |
| utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0), {{0, mBuffer}}); | |
| return std::make_tuple(pipeline, bindGroup); | |
| } | |
| std::tuple<wgpu::RenderPipeline, wgpu::BindGroup> CreatePipelineAndBindGroupForRender( | |
| wgpu::TextureFormat colorFormat) { | |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"( | |
| [[stage(vertex)]] fn main() -> [[builtin(position)]] vec4<f32> { | |
| return vec4<f32>(0.0, 0.0, 0.0, 1.0); | |
| })"); | |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( | |
| struct Contents { | |
| color : f32; | |
| }; | |
| [[group(0), binding(0)]] var<uniform> contents : Contents; | |
| [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> { | |
| return vec4<f32>(contents.color, 0.0, 0.0, 1.0); | |
| })"); | |
| utils::ComboRenderPipelineDescriptor rpDesc; | |
| rpDesc.vertex.module = vsModule; | |
| rpDesc.cFragment.module = fsModule; | |
| rpDesc.primitive.topology = wgpu::PrimitiveTopology::PointList; | |
| rpDesc.cTargets[0].format = colorFormat; | |
| wgpu::RenderPipeline pipeline = device.CreateRenderPipeline(&rpDesc); | |
| wgpu::BindGroup bindGroup = | |
| utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0), {{0, mBuffer}}); | |
| return std::make_tuple(pipeline, bindGroup); | |
| } | |
| wgpu::Buffer mBuffer; | |
| }; | |
| // Write into a storage buffer in compute pass in a command buffer. Then read that data in a render | |
| // pass. The two passes use the same command buffer. | |
| TEST_P(StorageToUniformSyncTests, ReadAfterWriteWithSameCommandBuffer) { | |
| // Create pipeline, bind group, and buffer for compute pass and render pass. | |
| CreateBuffer(); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); | |
| wgpu::ComputePipeline compute; | |
| wgpu::BindGroup computeBindGroup; | |
| std::tie(compute, computeBindGroup) = CreatePipelineAndBindGroupForCompute(); | |
| wgpu::RenderPipeline render; | |
| wgpu::BindGroup renderBindGroup; | |
| std::tie(render, renderBindGroup) = CreatePipelineAndBindGroupForRender(renderPass.colorFormat); | |
| // Write data into a storage buffer in compute pass. | |
| wgpu::CommandEncoder encoder0 = device.CreateCommandEncoder(); | |
| wgpu::ComputePassEncoder pass0 = encoder0.BeginComputePass(); | |
| pass0.SetPipeline(compute); | |
| pass0.SetBindGroup(0, computeBindGroup); | |
| pass0.Dispatch(1); | |
| pass0.EndPass(); | |
| // Read that data in render pass. | |
| wgpu::RenderPassEncoder pass1 = encoder0.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass1.SetPipeline(render); | |
| pass1.SetBindGroup(0, renderBindGroup); | |
| pass1.Draw(1); | |
| pass1.EndPass(); | |
| wgpu::CommandBuffer commands = encoder0.Finish(); | |
| queue.Submit(1, &commands); | |
| // Verify the rendering result. | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kRed, renderPass.color, 0, 0); | |
| } | |
| // Write into a storage buffer in compute pass in a command buffer. Then read that data in a render | |
| // pass. The two passes use the different command buffers. The command buffers are submitted to the | |
| // queue in one shot. | |
| TEST_P(StorageToUniformSyncTests, ReadAfterWriteWithDifferentCommandBuffers) { | |
| // Create pipeline, bind group, and buffer for compute pass and render pass. | |
| CreateBuffer(); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); | |
| wgpu::ComputePipeline compute; | |
| wgpu::BindGroup computeBindGroup; | |
| std::tie(compute, computeBindGroup) = CreatePipelineAndBindGroupForCompute(); | |
| wgpu::RenderPipeline render; | |
| wgpu::BindGroup renderBindGroup; | |
| std::tie(render, renderBindGroup) = CreatePipelineAndBindGroupForRender(renderPass.colorFormat); | |
| // Write data into a storage buffer in compute pass. | |
| wgpu::CommandBuffer cb[2]; | |
| wgpu::CommandEncoder encoder0 = device.CreateCommandEncoder(); | |
| wgpu::ComputePassEncoder pass0 = encoder0.BeginComputePass(); | |
| pass0.SetPipeline(compute); | |
| pass0.SetBindGroup(0, computeBindGroup); | |
| pass0.Dispatch(1); | |
| pass0.EndPass(); | |
| cb[0] = encoder0.Finish(); | |
| // Read that data in render pass. | |
| wgpu::CommandEncoder encoder1 = device.CreateCommandEncoder(); | |
| wgpu::RenderPassEncoder pass1 = encoder1.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass1.SetPipeline(render); | |
| pass1.SetBindGroup(0, renderBindGroup); | |
| pass1.Draw(1); | |
| pass1.EndPass(); | |
| cb[1] = encoder1.Finish(); | |
| queue.Submit(2, cb); | |
| // Verify the rendering result. | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kRed, renderPass.color, 0, 0); | |
| } | |
| // Write into a storage buffer in compute pass in a command buffer. Then read that data in a render | |
| // pass. The two passes use the different command buffers. The command buffers are submitted to the | |
| // queue separately. | |
| TEST_P(StorageToUniformSyncTests, ReadAfterWriteWithDifferentQueueSubmits) { | |
| // Create pipeline, bind group, and buffer for compute pass and render pass. | |
| CreateBuffer(); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); | |
| wgpu::ComputePipeline compute; | |
| wgpu::BindGroup computeBindGroup; | |
| std::tie(compute, computeBindGroup) = CreatePipelineAndBindGroupForCompute(); | |
| wgpu::RenderPipeline render; | |
| wgpu::BindGroup renderBindGroup; | |
| std::tie(render, renderBindGroup) = CreatePipelineAndBindGroupForRender(renderPass.colorFormat); | |
| // Write data into a storage buffer in compute pass. | |
| wgpu::CommandBuffer cb[2]; | |
| wgpu::CommandEncoder encoder0 = device.CreateCommandEncoder(); | |
| wgpu::ComputePassEncoder pass0 = encoder0.BeginComputePass(); | |
| pass0.SetPipeline(compute); | |
| pass0.SetBindGroup(0, computeBindGroup); | |
| pass0.Dispatch(1); | |
| pass0.EndPass(); | |
| cb[0] = encoder0.Finish(); | |
| queue.Submit(1, &cb[0]); | |
| // Read that data in render pass. | |
| wgpu::CommandEncoder encoder1 = device.CreateCommandEncoder(); | |
| wgpu::RenderPassEncoder pass1 = encoder1.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass1.SetPipeline(render); | |
| pass1.SetBindGroup(0, renderBindGroup); | |
| pass1.Draw(1); | |
| pass1.EndPass(); | |
| cb[1] = encoder1.Finish(); | |
| queue.Submit(1, &cb[1]); | |
| // Verify the rendering result. | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kRed, renderPass.color, 0, 0); | |
| } | |
| DAWN_INSTANTIATE_TEST(StorageToUniformSyncTests, | |
| D3D12Backend(), | |
| MetalBackend(), | |
| OpenGLBackend(), | |
| OpenGLESBackend(), | |
| VulkanBackend()); | |
| constexpr int kRTSize = 8; | |
| constexpr int kVertexBufferStride = 4 * sizeof(float); | |
| class MultipleWriteThenMultipleReadTests : public DawnTest { | |
| protected: | |
| wgpu::Buffer CreateZeroedBuffer(uint64_t size, wgpu::BufferUsage usage) { | |
| wgpu::BufferDescriptor srcDesc; | |
| srcDesc.size = size; | |
| srcDesc.usage = usage; | |
| wgpu::Buffer buffer = device.CreateBuffer(&srcDesc); | |
| std::vector<uint8_t> zeros(size, 0); | |
| queue.WriteBuffer(buffer, 0, zeros.data(), size); | |
| return buffer; | |
| } | |
| }; | |
| // Write into a few storage buffers in compute pass. Then read that data in a render pass. The | |
| // readonly buffers in render pass include vertex buffer, index buffer, uniform buffer, and readonly | |
| // storage buffer. Data to be read in all of these buffers in render pass depend on the write | |
| // operation in compute pass. | |
| TEST_P(MultipleWriteThenMultipleReadTests, SeparateBuffers) { | |
| // Create pipeline, bind group, and different buffers for compute pass. | |
| wgpu::ShaderModule csModule = utils::CreateShaderModule(device, R"( | |
| struct VBContents { | |
| pos : array<vec4<f32>, 4>; | |
| }; | |
| [[group(0), binding(0)]] var<storage, read_write> vbContents : VBContents; | |
| struct IBContents { | |
| indices : array<vec4<i32>, 2>; | |
| }; | |
| [[group(0), binding(1)]] var<storage, read_write> ibContents : IBContents; | |
| struct ColorContents { | |
| color : f32; | |
| }; | |
| [[group(0), binding(2)]] var<storage, read_write> uniformContents : ColorContents; | |
| [[group(0), binding(3)]] var<storage, read_write> storageContents : ColorContents; | |
| [[stage(compute), workgroup_size(1)]] fn main() { | |
| vbContents.pos[0] = vec4<f32>(-1.0, 1.0, 0.0, 1.0); | |
| vbContents.pos[1] = vec4<f32>(1.0, 1.0, 0.0, 1.0); | |
| vbContents.pos[2] = vec4<f32>(1.0, -1.0, 0.0, 1.0); | |
| vbContents.pos[3] = vec4<f32>(-1.0, -1.0, 0.0, 1.0); | |
| let dummy : i32 = 0; | |
| ibContents.indices[0] = vec4<i32>(0, 1, 2, 0); | |
| ibContents.indices[1] = vec4<i32>(2, 3, dummy, dummy); | |
| uniformContents.color = 1.0; | |
| storageContents.color = 1.0; | |
| })"); | |
| wgpu::ComputePipelineDescriptor cpDesc; | |
| cpDesc.compute.module = csModule; | |
| cpDesc.compute.entryPoint = "main"; | |
| wgpu::ComputePipeline cp = device.CreateComputePipeline(&cpDesc); | |
| wgpu::Buffer vertexBuffer = CreateZeroedBuffer( | |
| kVertexBufferStride * 4, | |
| wgpu::BufferUsage::Vertex | wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopyDst); | |
| wgpu::Buffer indexBuffer = CreateZeroedBuffer( | |
| sizeof(int) * 4 * 2, | |
| wgpu::BufferUsage::Index | wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopyDst); | |
| wgpu::Buffer uniformBuffer = | |
| CreateZeroedBuffer(sizeof(float), wgpu::BufferUsage::Uniform | wgpu::BufferUsage::Storage | | |
| wgpu::BufferUsage::CopyDst); | |
| wgpu::Buffer storageBuffer = | |
| CreateZeroedBuffer(sizeof(float), wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopyDst); | |
| wgpu::BindGroup bindGroup0 = utils::MakeBindGroup( | |
| device, cp.GetBindGroupLayout(0), | |
| {{0, vertexBuffer}, {1, indexBuffer}, {2, uniformBuffer}, {3, storageBuffer}}); | |
| // Write data into storage buffers in compute pass. | |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); | |
| wgpu::ComputePassEncoder pass0 = encoder.BeginComputePass(); | |
| pass0.SetPipeline(cp); | |
| pass0.SetBindGroup(0, bindGroup0); | |
| pass0.Dispatch(1); | |
| pass0.EndPass(); | |
| // Create pipeline, bind group, and reuse buffers in render pass. | |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"( | |
| [[stage(vertex)]] | |
| fn main([[location(0)]] pos : vec4<f32>) -> [[builtin(position)]] vec4<f32> { | |
| return pos; | |
| })"); | |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( | |
| struct Buf { | |
| color : f32; | |
| }; | |
| [[group(0), binding(0)]] var<uniform> uniformBuffer : Buf; | |
| [[group(0), binding(1)]] var<storage, read> storageBuffer : Buf; | |
| [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> { | |
| return vec4<f32>(uniformBuffer.color, storageBuffer.color, 0.0, 1.0); | |
| })"); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, kRTSize, kRTSize); | |
| utils::ComboRenderPipelineDescriptor rpDesc; | |
| rpDesc.vertex.module = vsModule; | |
| rpDesc.cFragment.module = fsModule; | |
| rpDesc.primitive.topology = wgpu::PrimitiveTopology::TriangleList; | |
| rpDesc.vertex.bufferCount = 1; | |
| rpDesc.cBuffers[0].arrayStride = kVertexBufferStride; | |
| rpDesc.cBuffers[0].attributeCount = 1; | |
| rpDesc.cAttributes[0].format = wgpu::VertexFormat::Float32x4; | |
| rpDesc.cTargets[0].format = renderPass.colorFormat; | |
| wgpu::RenderPipeline rp = device.CreateRenderPipeline(&rpDesc); | |
| wgpu::BindGroup bindGroup1 = utils::MakeBindGroup(device, rp.GetBindGroupLayout(0), | |
| {{0, uniformBuffer}, {1, storageBuffer}}); | |
| // Read data in buffers in render pass. | |
| wgpu::RenderPassEncoder pass1 = encoder.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass1.SetPipeline(rp); | |
| pass1.SetVertexBuffer(0, vertexBuffer); | |
| pass1.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32, 0); | |
| pass1.SetBindGroup(0, bindGroup1); | |
| pass1.DrawIndexed(6); | |
| pass1.EndPass(); | |
| wgpu::CommandBuffer commandBuffer = encoder.Finish(); | |
| queue.Submit(1, &commandBuffer); | |
| // Verify the rendering result. | |
| uint32_t min = 1, max = kRTSize - 3; | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, min, min); | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, max, min); | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, min, max); | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, max, max); | |
| } | |
| // Write into a storage buffer in compute pass. Then read that data in buffer in a render pass. The | |
| // buffer is composed of vertices, indices, uniforms and readonly storage. Data to be read in the | |
| // buffer in render pass depend on the write operation in compute pass. | |
| TEST_P(MultipleWriteThenMultipleReadTests, OneBuffer) { | |
| // TODO(crbug.com/dawn/646): diagnose and fix this OpenGL ES failure. | |
| // "Push constant block cannot be expressed as neither std430 nor std140. ES-targets do not | |
| // support GL_ARB_enhanced_layouts." | |
| DAWN_SUPPRESS_TEST_IF(IsOpenGLES()); | |
| // Create pipeline, bind group, and a complex buffer for compute pass. | |
| wgpu::ShaderModule csModule = utils::CreateShaderModule(device, R"( | |
| struct Contents { | |
| [[align(256)]] pos : array<vec4<f32>, 4>; | |
| [[align(256)]] indices : array<vec4<i32>, 2>; | |
| [[align(256)]] color0 : f32; | |
| [[align(256)]] color1 : f32; | |
| }; | |
| [[group(0), binding(0)]] var<storage, read_write> contents : Contents; | |
| [[stage(compute), workgroup_size(1)]] fn main() { | |
| contents.pos[0] = vec4<f32>(-1.0, 1.0, 0.0, 1.0); | |
| contents.pos[1] = vec4<f32>(1.0, 1.0, 0.0, 1.0); | |
| contents.pos[2] = vec4<f32>(1.0, -1.0, 0.0, 1.0); | |
| contents.pos[3] = vec4<f32>(-1.0, -1.0, 0.0, 1.0); | |
| let dummy : i32 = 0; | |
| contents.indices[0] = vec4<i32>(0, 1, 2, 0); | |
| contents.indices[1] = vec4<i32>(2, 3, dummy, dummy); | |
| contents.color0 = 1.0; | |
| contents.color1 = 1.0; | |
| })"); | |
| wgpu::ComputePipelineDescriptor cpDesc; | |
| cpDesc.compute.module = csModule; | |
| cpDesc.compute.entryPoint = "main"; | |
| wgpu::ComputePipeline cp = device.CreateComputePipeline(&cpDesc); | |
| struct Data { | |
| float pos[4][4]; | |
| char padding0[256 - sizeof(float) * 16]; | |
| int indices[2][4]; | |
| char padding1[256 - sizeof(int) * 8]; | |
| float color0; | |
| char padding2[256 - sizeof(float)]; | |
| float color1; | |
| char padding3[256 - sizeof(float)]; | |
| }; | |
| wgpu::Buffer buffer = CreateZeroedBuffer( | |
| sizeof(Data), wgpu::BufferUsage::Vertex | wgpu::BufferUsage::Index | | |
| wgpu::BufferUsage::Uniform | wgpu::BufferUsage::Storage | | |
| wgpu::BufferUsage::CopyDst); | |
| wgpu::BindGroup bindGroup0 = | |
| utils::MakeBindGroup(device, cp.GetBindGroupLayout(0), {{0, buffer}}); | |
| // Write various data (vertices, indices, and uniforms) into the buffer in compute pass. | |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); | |
| wgpu::ComputePassEncoder pass0 = encoder.BeginComputePass(); | |
| pass0.SetPipeline(cp); | |
| pass0.SetBindGroup(0, bindGroup0); | |
| pass0.Dispatch(1); | |
| pass0.EndPass(); | |
| // Create pipeline, bind group, and reuse the buffer in render pass. | |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"( | |
| [[stage(vertex)]] | |
| fn main([[location(0)]] pos : vec4<f32>) -> [[builtin(position)]] vec4<f32> { | |
| return pos; | |
| })"); | |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( | |
| struct Buf { | |
| color : f32; | |
| }; | |
| [[group(0), binding(0)]] var<uniform> uniformBuffer : Buf; | |
| [[group(0), binding(1)]] var<storage, read> storageBuffer : Buf; | |
| [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> { | |
| return vec4<f32>(uniformBuffer.color, storageBuffer.color, 0.0, 1.0); | |
| })"); | |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, kRTSize, kRTSize); | |
| utils::ComboRenderPipelineDescriptor rpDesc; | |
| rpDesc.vertex.module = vsModule; | |
| rpDesc.cFragment.module = fsModule; | |
| rpDesc.primitive.topology = wgpu::PrimitiveTopology::TriangleList; | |
| rpDesc.vertex.bufferCount = 1; | |
| rpDesc.cBuffers[0].arrayStride = kVertexBufferStride; | |
| rpDesc.cBuffers[0].attributeCount = 1; | |
| rpDesc.cAttributes[0].format = wgpu::VertexFormat::Float32x4; | |
| rpDesc.cTargets[0].format = renderPass.colorFormat; | |
| wgpu::RenderPipeline rp = device.CreateRenderPipeline(&rpDesc); | |
| wgpu::BindGroup bindGroup1 = | |
| utils::MakeBindGroup(device, rp.GetBindGroupLayout(0), | |
| {{0, buffer, offsetof(Data, color0), sizeof(float)}, | |
| {1, buffer, offsetof(Data, color1), sizeof(float)}}); | |
| // Read various data in the buffer in render pass. | |
| wgpu::RenderPassEncoder pass1 = encoder.BeginRenderPass(&renderPass.renderPassInfo); | |
| pass1.SetPipeline(rp); | |
| pass1.SetVertexBuffer(0, buffer); | |
| pass1.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, offsetof(Data, indices)); | |
| pass1.SetBindGroup(0, bindGroup1); | |
| pass1.DrawIndexed(6); | |
| pass1.EndPass(); | |
| wgpu::CommandBuffer commandBuffer = encoder.Finish(); | |
| queue.Submit(1, &commandBuffer); | |
| // Verify the rendering result. | |
| uint32_t min = 1, max = kRTSize - 3; | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, min, min); | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, max, min); | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, min, max); | |
| EXPECT_PIXEL_RGBA8_EQ(RGBA8::kYellow, renderPass.color, max, max); | |
| } | |
| DAWN_INSTANTIATE_TEST(MultipleWriteThenMultipleReadTests, | |
| D3D12Backend(), | |
| MetalBackend(), | |
| OpenGLBackend(), | |
| OpenGLESBackend(), | |
| VulkanBackend()); |