| // 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 "tests/DawnTest.h" |
| |
| #include "common/Assert.h" |
| #include "utils/ComboRenderPipelineDescriptor.h" |
| #include "utils/WGPUHelpers.h" |
| |
| class OpArrayLengthTest : public DawnTest { |
| protected: |
| void SetUp() { |
| DawnTest::SetUp(); |
| |
| // Create buffers of various size to check the length() implementation |
| wgpu::BufferDescriptor bufferDesc; |
| bufferDesc.size = 4; |
| bufferDesc.usage = wgpu::BufferUsage::Storage; |
| mStorageBuffer4 = device.CreateBuffer(&bufferDesc); |
| |
| bufferDesc.size = 256; |
| mStorageBuffer256 = device.CreateBuffer(&bufferDesc); |
| |
| bufferDesc.size = 512 + 256; |
| mStorageBuffer512 = device.CreateBuffer(&bufferDesc); |
| |
| // Put them all in a bind group for tests to bind them easily. |
| wgpu::ShaderStage kAllStages = |
| wgpu::ShaderStage::Fragment | wgpu::ShaderStage::Vertex | wgpu::ShaderStage::Compute; |
| mBindGroupLayout = utils::MakeBindGroupLayout( |
| device, {{0, kAllStages, wgpu::BufferBindingType::ReadOnlyStorage}, |
| {1, kAllStages, wgpu::BufferBindingType::ReadOnlyStorage}, |
| {2, kAllStages, wgpu::BufferBindingType::ReadOnlyStorage}}); |
| |
| mBindGroup = utils::MakeBindGroup(device, mBindGroupLayout, |
| { |
| {0, mStorageBuffer4, 0, 4}, |
| {1, mStorageBuffer256, 0, wgpu::kWholeSize}, |
| {2, mStorageBuffer512, 256, wgpu::kWholeSize}, |
| }); |
| |
| // Common shader code to use these buffers in shaders, assuming they are in bindgroup index |
| // 0. |
| mShaderInterface = R"( |
| // TODO(crbug.com/tint/386): Use the same struct. |
| [[block]] struct DataBuffer1 { |
| data : [[stride(4)]] array<f32>; |
| }; |
| |
| [[block]] struct DataBuffer2 { |
| data : [[stride(4)]] array<f32>; |
| }; |
| |
| // The length should be 1 because the buffer is 4-byte long. |
| [[group(0), binding(0)]] var<storage, read> buffer1 : DataBuffer1; |
| |
| // The length should be 64 because the buffer is 256 bytes long. |
| [[group(0), binding(1)]] var<storage, read> buffer2 : DataBuffer2; |
| |
| // The length should be (512 - 16*4) / 8 = 56 because the buffer is 512 bytes long |
| // and the structure is 8 bytes big. |
| struct Buffer3Data { |
| a : f32; |
| b : i32; |
| }; |
| |
| [[block]] struct Buffer3 { |
| [[size(64)]] garbage : mat4x4<f32>; |
| data : [[stride(8)]] array<Buffer3Data>; |
| }; |
| [[group(0), binding(2)]] var<storage, read> buffer3 : Buffer3; |
| )"; |
| |
| // See comments in the shader for an explanation of these values |
| mExpectedLengths = {1, 64, 56}; |
| } |
| |
| wgpu::Buffer mStorageBuffer4; |
| wgpu::Buffer mStorageBuffer256; |
| wgpu::Buffer mStorageBuffer512; |
| |
| wgpu::BindGroupLayout mBindGroupLayout; |
| wgpu::BindGroup mBindGroup; |
| std::string mShaderInterface; |
| std::array<uint32_t, 3> mExpectedLengths; |
| }; |
| |
| // Test OpArrayLength in the compute stage |
| TEST_P(OpArrayLengthTest, Compute) { |
| // TODO(crbug.com/dawn/197): The computations for length() of unsized buffer is broken on |
| // Nvidia OpenGL. |
| DAWN_SUPPRESS_TEST_IF(IsNvidia() && (IsOpenGL() || IsOpenGLES())); |
| |
| // Create a buffer to hold the result sizes and create a bindgroup for it. |
| wgpu::BufferDescriptor bufferDesc; |
| bufferDesc.usage = wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc; |
| bufferDesc.size = sizeof(uint32_t) * mExpectedLengths.size(); |
| wgpu::Buffer resultBuffer = device.CreateBuffer(&bufferDesc); |
| |
| wgpu::BindGroupLayout resultLayout = utils::MakeBindGroupLayout( |
| device, {{0, wgpu::ShaderStage::Compute, wgpu::BufferBindingType::Storage}}); |
| |
| wgpu::BindGroup resultBindGroup = |
| utils::MakeBindGroup(device, resultLayout, {{0, resultBuffer, 0, wgpu::kWholeSize}}); |
| |
| // Create the compute pipeline that stores the length()s in the result buffer. |
| wgpu::BindGroupLayout bgls[] = {mBindGroupLayout, resultLayout}; |
| wgpu::PipelineLayoutDescriptor plDesc; |
| plDesc.bindGroupLayoutCount = 2; |
| plDesc.bindGroupLayouts = bgls; |
| wgpu::PipelineLayout pl = device.CreatePipelineLayout(&plDesc); |
| |
| wgpu::ComputePipelineDescriptor pipelineDesc; |
| pipelineDesc.layout = pl; |
| pipelineDesc.compute.entryPoint = "main"; |
| pipelineDesc.compute.module = utils::CreateShaderModule(device, (R"( |
| [[block]] struct ResultBuffer { |
| data : [[stride(4)]] array<u32, 3>; |
| }; |
| [[group(1), binding(0)]] var<storage, read_write> result : ResultBuffer; |
| )" + mShaderInterface + R"( |
| [[stage(compute)]] fn main() { |
| result.data[0] = arrayLength(buffer1.data); |
| result.data[1] = arrayLength(buffer2.data); |
| result.data[2] = arrayLength(buffer3.data); |
| })") |
| .c_str()); |
| wgpu::ComputePipeline pipeline = device.CreateComputePipeline(&pipelineDesc); |
| |
| // Run a single instance of the compute shader |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| wgpu::ComputePassEncoder pass = encoder.BeginComputePass(); |
| pass.SetPipeline(pipeline); |
| pass.SetBindGroup(0, mBindGroup); |
| pass.SetBindGroup(1, resultBindGroup); |
| pass.Dispatch(1); |
| pass.EndPass(); |
| |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| EXPECT_BUFFER_U32_RANGE_EQ(mExpectedLengths.data(), resultBuffer, 0, 3); |
| } |
| |
| // Test OpArrayLength in the fragment stage |
| TEST_P(OpArrayLengthTest, Fragment) { |
| // TODO(crbug.com/dawn/197): The computations for length() of unsized buffer is broken on |
| // Nvidia OpenGL. |
| DAWN_SUPPRESS_TEST_IF(IsNvidia() && (IsOpenGL() || IsOpenGLES())); |
| |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); |
| |
| // Create the pipeline that computes the length of the buffers and writes it to the only render |
| // pass pixel. |
| 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, (mShaderInterface + R"( |
| [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> { |
| var fragColor : vec4<f32>; |
| fragColor.r = f32(arrayLength(buffer1.data)) / 255.0; |
| fragColor.g = f32(arrayLength(buffer2.data)) / 255.0; |
| fragColor.b = f32(arrayLength(buffer3.data)) / 255.0; |
| fragColor.a = 0.0; |
| return fragColor; |
| })") |
| .c_str()); |
| |
| utils::ComboRenderPipelineDescriptor descriptor; |
| descriptor.vertex.module = vsModule; |
| descriptor.cFragment.module = fsModule; |
| descriptor.primitive.topology = wgpu::PrimitiveTopology::PointList; |
| descriptor.cTargets[0].format = renderPass.colorFormat; |
| descriptor.layout = utils::MakeBasicPipelineLayout(device, &mBindGroupLayout); |
| wgpu::RenderPipeline pipeline = device.CreateRenderPipeline(&descriptor); |
| |
| // "Draw" the lengths to the texture. |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| { |
| wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo); |
| pass.SetPipeline(pipeline); |
| pass.SetBindGroup(0, mBindGroup); |
| pass.Draw(1); |
| pass.EndPass(); |
| } |
| |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| RGBA8 expectedColor = RGBA8(mExpectedLengths[0], mExpectedLengths[1], mExpectedLengths[2], 0); |
| EXPECT_PIXEL_RGBA8_EQ(expectedColor, renderPass.color, 0, 0); |
| } |
| |
| // Test OpArrayLength in the vertex stage |
| TEST_P(OpArrayLengthTest, Vertex) { |
| // TODO(crbug.com/dawn/197): The computations for length() of unsized buffer is broken on |
| // Nvidia OpenGL. Also failing on all GLES (NV, Intel, SwANGLE). |
| DAWN_SUPPRESS_TEST_IF(IsNvidia() && IsOpenGL()); |
| DAWN_SUPPRESS_TEST_IF(IsOpenGLES()); |
| |
| utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1); |
| |
| // Create the pipeline that computes the length of the buffers and writes it to the only render |
| // pass pixel. |
| wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, (mShaderInterface + R"( |
| struct VertexOut { |
| [[location(0)]] color : vec4<f32>; |
| [[builtin(position)]] position : vec4<f32>; |
| }; |
| |
| [[stage(vertex)]] fn main() -> VertexOut { |
| var output : VertexOut; |
| output.color.r = f32(arrayLength(buffer1.data)) / 255.0; |
| output.color.g = f32(arrayLength(buffer2.data)) / 255.0; |
| output.color.b = f32(arrayLength(buffer3.data)) / 255.0; |
| output.color.a = 0.0; |
| |
| output.position = vec4<f32>(0.0, 0.0, 0.0, 1.0); |
| return output; |
| })") |
| .c_str()); |
| |
| wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"( |
| [[stage(fragment)]] |
| fn main([[location(0)]] color : vec4<f32>) -> [[location(0)]] vec4<f32> { |
| return color; |
| })"); |
| |
| utils::ComboRenderPipelineDescriptor descriptor; |
| descriptor.vertex.module = vsModule; |
| descriptor.cFragment.module = fsModule; |
| descriptor.primitive.topology = wgpu::PrimitiveTopology::PointList; |
| descriptor.cTargets[0].format = renderPass.colorFormat; |
| descriptor.layout = utils::MakeBasicPipelineLayout(device, &mBindGroupLayout); |
| wgpu::RenderPipeline pipeline = device.CreateRenderPipeline(&descriptor); |
| |
| // "Draw" the lengths to the texture. |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| { |
| wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo); |
| pass.SetPipeline(pipeline); |
| pass.SetBindGroup(0, mBindGroup); |
| pass.Draw(1); |
| pass.EndPass(); |
| } |
| |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| RGBA8 expectedColor = RGBA8(mExpectedLengths[0], mExpectedLengths[1], mExpectedLengths[2], 0); |
| EXPECT_PIXEL_RGBA8_EQ(expectedColor, renderPass.color, 0, 0); |
| } |
| |
| DAWN_INSTANTIATE_TEST(OpArrayLengthTest, |
| D3D12Backend(), |
| MetalBackend(), |
| OpenGLBackend(), |
| OpenGLESBackend(), |
| VulkanBackend()); |