src/tests/end2end/CreatePipelineAsyncTests.cpp - dawn - Git at Google

 // Copyright 2020 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 "utils/ComboRenderPipelineDescriptor.h"
 #include "utils/WGPUHelpers.h"

 namespace {
     struct CreatePipelineAsyncTask {
         wgpu::ComputePipeline computePipeline = nullptr;
         wgpu::RenderPipeline renderPipeline = nullptr;
         bool isCompleted = false;
         std::string message;
     };
 }  // anonymous namespace

 class CreatePipelineAsyncTest : public DawnTest {
   protected:
     void ValidateCreateComputePipelineAsync(CreatePipelineAsyncTask* currentTask) {
         wgpu::BufferDescriptor bufferDesc;
         bufferDesc.size = sizeof(uint32_t);
         bufferDesc.usage = wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc;
         wgpu::Buffer ssbo = device.CreateBuffer(&bufferDesc);

         wgpu::CommandBuffer commands;
         {
             wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
             wgpu::ComputePassEncoder pass = encoder.BeginComputePass();

             while (!currentTask->isCompleted) {
                 WaitABit();
             }
             ASSERT_TRUE(currentTask->message.empty());
             ASSERT_NE(nullptr, currentTask->computePipeline.Get());
             wgpu::BindGroup bindGroup =
                 utils::MakeBindGroup(device, currentTask->computePipeline.GetBindGroupLayout(0),
                                      {
                                          {0, ssbo, 0, sizeof(uint32_t)},
                                      });
             pass.SetBindGroup(0, bindGroup);
             pass.SetPipeline(currentTask->computePipeline);

             pass.Dispatch(1);
             pass.EndPass();

             commands = encoder.Finish();
         }

         queue.Submit(1, &commands);

         constexpr uint32_t kExpected = 1u;
         EXPECT_BUFFER_U32_EQ(kExpected, ssbo, 0);
     }

     void ValidateCreateComputePipelineAsync() {
         ValidateCreateComputePipelineAsync(&task);
     }

     CreatePipelineAsyncTask task;
 };

 // Verify the basic use of CreateComputePipelineAsync works on all backends.
 TEST_P(CreatePipelineAsyncTest, BasicUseOfCreateComputePipelineAsync) {
     wgpu::ComputePipelineDescriptor csDesc;
     csDesc.compute.module = utils::CreateShaderModule(device, R"(
         [[block]] struct SSBO {
             value : u32;
         };
         [[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

         [[stage(compute)]] fn main() {
             ssbo.value = 1u;
         })");
     csDesc.compute.entryPoint = "main";

     device.CreateComputePipelineAsync(
         &csDesc,
         [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
            const char* message, void* userdata) {
             EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

             CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
             task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
             task->isCompleted = true;
             task->message = message;
         },
         &task);

     ValidateCreateComputePipelineAsync();
 }

 // Verify CreateComputePipelineAsync() works as expected when there is any error that happens during
 // the creation of the compute pipeline. The SPEC requires that during the call of
 // CreateComputePipelineAsync() any error won't be forwarded to the error scope / unhandled error
 // callback.
 TEST_P(CreatePipelineAsyncTest, CreateComputePipelineFailed) {
     DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

     wgpu::ComputePipelineDescriptor csDesc;
     csDesc.compute.module = utils::CreateShaderModule(device, R"(
         [[block]] struct SSBO {
             value : u32;
         };
         [[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

         [[stage(compute)]] fn main() {
             ssbo.value = 1u;
         })");
     csDesc.compute.entryPoint = "main0";

     device.CreateComputePipelineAsync(
         &csDesc,
         [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
            const char* message, void* userdata) {
             EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Error, status);

             CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
             task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
             task->isCompleted = true;
             task->message = message;
         },
         &task);

     while (!task.isCompleted) {
         WaitABit();
     }

     ASSERT_FALSE(task.message.empty());
     ASSERT_EQ(nullptr, task.computePipeline.Get());
 }

 // Verify the basic use of CreateRenderPipelineAsync() works on all backends.
 TEST_P(CreatePipelineAsyncTest, BasicUseOfCreateRenderPipelineAsync) {
     constexpr wgpu::TextureFormat kRenderAttachmentFormat = wgpu::TextureFormat::RGBA8Unorm;

     utils::ComboRenderPipelineDescriptor renderPipelineDescriptor;
     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"(
         [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
             return vec4<f32>(0.0, 1.0, 0.0, 1.0);
         })");
     renderPipelineDescriptor.vertex.module = vsModule;
     renderPipelineDescriptor.cFragment.module = fsModule;
     renderPipelineDescriptor.cTargets[0].format = kRenderAttachmentFormat;
     renderPipelineDescriptor.primitive.topology = wgpu::PrimitiveTopology::PointList;

     device.CreateRenderPipelineAsync(
         &renderPipelineDescriptor,
         [](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
            const char* message, void* userdata) {
             EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

             CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
             task->renderPipeline = wgpu::RenderPipeline::Acquire(returnPipeline);
             task->isCompleted = true;
             task->message = message;
         },
         &task);

     wgpu::TextureDescriptor textureDescriptor;
     textureDescriptor.size = {1, 1, 1};
     textureDescriptor.format = kRenderAttachmentFormat;
     textureDescriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
     wgpu::Texture outputTexture = device.CreateTexture(&textureDescriptor);

     utils::ComboRenderPassDescriptor renderPassDescriptor({outputTexture.CreateView()});
     renderPassDescriptor.cColorAttachments[0].loadOp = wgpu::LoadOp::Clear;
     renderPassDescriptor.cColorAttachments[0].clearColor = {1.f, 0.f, 0.f, 1.f};

     wgpu::CommandBuffer commands;
     {
         wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
         wgpu::RenderPassEncoder renderPassEncoder = encoder.BeginRenderPass(&renderPassDescriptor);

         while (!task.isCompleted) {
             WaitABit();
         }
         ASSERT_TRUE(task.message.empty());
         ASSERT_NE(nullptr, task.renderPipeline.Get());

         renderPassEncoder.SetPipeline(task.renderPipeline);
         renderPassEncoder.Draw(1);
         renderPassEncoder.EndPass();
         commands = encoder.Finish();
     }

     queue.Submit(1, &commands);

     EXPECT_PIXEL_RGBA8_EQ(RGBA8(0, 255, 0, 255), outputTexture, 0, 0);
 }

 // Verify CreateRenderPipelineAsync() works as expected when there is any error that happens during
 // the creation of the render pipeline. The SPEC requires that during the call of
 // CreateRenderPipelineAsync() any error won't be forwarded to the error scope / unhandled error
 // callback.
 TEST_P(CreatePipelineAsyncTest, CreateRenderPipelineFailed) {
     DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

     constexpr wgpu::TextureFormat kRenderAttachmentFormat = wgpu::TextureFormat::Depth32Float;

     utils::ComboRenderPipelineDescriptor renderPipelineDescriptor;
     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"(
         [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
             return vec4<f32>(0.0, 1.0, 0.0, 1.0);
         })");
     renderPipelineDescriptor.vertex.module = vsModule;
     renderPipelineDescriptor.cFragment.module = fsModule;
     renderPipelineDescriptor.cTargets[0].format = kRenderAttachmentFormat;
     renderPipelineDescriptor.primitive.topology = wgpu::PrimitiveTopology::PointList;

     device.CreateRenderPipelineAsync(
         &renderPipelineDescriptor,
         [](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
            const char* message, void* userdata) {
             EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Error, status);

             CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
             task->renderPipeline = wgpu::RenderPipeline::Acquire(returnPipeline);
             task->isCompleted = true;
             task->message = message;
         },
         &task);

     while (!task.isCompleted) {
         WaitABit();
     }

     ASSERT_FALSE(task.message.empty());
     ASSERT_EQ(nullptr, task.computePipeline.Get());
 }

 // Verify there is no error when the device is released before the callback of
 // CreateComputePipelineAsync() is called.
 TEST_P(CreatePipelineAsyncTest, ReleaseDeviceBeforeCallbackOfCreateComputePipelineAsync) {
     wgpu::ComputePipelineDescriptor csDesc;
     csDesc.compute.module = utils::CreateShaderModule(device, R"(
         [[stage(compute)]] fn main() {
         })");
     csDesc.compute.entryPoint = "main";

     device.CreateComputePipelineAsync(
         &csDesc,
         [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
            const char* message, void* userdata) {
             EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_DeviceDestroyed,
                       status);

             CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
             task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
             task->isCompleted = true;
             task->message = message;
         },
         &task);
 }

 // Verify there is no error when the device is released before the callback of
 // CreateRenderPipelineAsync() is called.
 TEST_P(CreatePipelineAsyncTest, ReleaseDeviceBeforeCallbackOfCreateRenderPipelineAsync) {
     utils::ComboRenderPipelineDescriptor renderPipelineDescriptor;
     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"(
         [[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
             return vec4<f32>(0.0, 1.0, 0.0, 1.0);
         })");
     renderPipelineDescriptor.vertex.module = vsModule;
     renderPipelineDescriptor.cFragment.module = fsModule;
     renderPipelineDescriptor.cTargets[0].format = wgpu::TextureFormat::RGBA8Unorm;
     renderPipelineDescriptor.primitive.topology = wgpu::PrimitiveTopology::PointList;

     device.CreateRenderPipelineAsync(
         &renderPipelineDescriptor,
         [](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
            const char* message, void* userdata) {
             EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_DeviceDestroyed,
                       status);

             CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
             task->renderPipeline = wgpu::RenderPipeline::Acquire(returnPipeline);
             task->isCompleted = true;
             task->message = message;
         },
         &task);
 }

 // Verify the code path of CreateComputePipelineAsync() to directly return the compute pipeline
 // object from cache works correctly.
 TEST_P(CreatePipelineAsyncTest, CreateSameComputePipelineTwice) {
     wgpu::ComputePipelineDescriptor csDesc;
     csDesc.compute.module = utils::CreateShaderModule(device, R"(
         [[block]] struct SSBO {
             value : u32;
         };
         [[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

         [[stage(compute)]] fn main() {
             ssbo.value = 1u;
         })");
     csDesc.compute.entryPoint = "main";

     auto callback = [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
                        const char* message, void* userdata) {
         EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

         CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
         task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
         task->isCompleted = true;
         task->message = message;
     };

     // Create a pipeline object and save it into anotherTask.computePipeline.
     CreatePipelineAsyncTask anotherTask;
     device.CreateComputePipelineAsync(&csDesc, callback, &anotherTask);
     while (!anotherTask.isCompleted) {
         WaitABit();
     }
     ASSERT_TRUE(anotherTask.message.empty());
     ASSERT_NE(nullptr, anotherTask.computePipeline.Get());

     // Create another pipeline object task.comnputepipeline with the same compute pipeline
     // descriptor used in the creation of anotherTask.computePipeline. This time the pipeline
     // object should be directly got from the pipeline object cache.
     device.CreateComputePipelineAsync(&csDesc, callback, &task);
     ValidateCreateComputePipelineAsync();
 }

 // Verify creating compute pipeline with same descriptor and CreateComputePipelineAsync() at the
 // same time works correctly.
 TEST_P(CreatePipelineAsyncTest, CreateSamePipelineTwiceAtSameTime) {
     wgpu::ComputePipelineDescriptor csDesc;
     csDesc.compute.module = utils::CreateShaderModule(device, R"(
         [[block]] struct SSBO {
             value : u32;
         };
         [[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

         [[stage(compute)]] fn main() {
             ssbo.value = 1u;
         })");
     csDesc.compute.entryPoint = "main";

     auto callback = [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
                        const char* message, void* userdata) {
         EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

         CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
         task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
         task->isCompleted = true;
         task->message = message;
     };

     // Create two pipeline objects with same descriptor.
     CreatePipelineAsyncTask anotherTask;
     device.CreateComputePipelineAsync(&csDesc, callback, &task);
     device.CreateComputePipelineAsync(&csDesc, callback, &anotherTask);

     // Verify both task.computePipeline and anotherTask.computePipeline are created correctly.
     ValidateCreateComputePipelineAsync(&anotherTask);
     ValidateCreateComputePipelineAsync(&task);

     // Verify task.computePipeline and anotherTask.computePipeline are pointing to the same Dawn
     // object.
     if (!UsesWire()) {
         EXPECT_EQ(task.computePipeline.Get(), anotherTask.computePipeline.Get());
     }
 }

 DAWN_INSTANTIATE_TEST(CreatePipelineAsyncTest,
                       D3D12Backend(),
                       MetalBackend(),
                       OpenGLBackend(),
                       OpenGLESBackend(),
                       VulkanBackend());
	// Copyright 2020 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 "utils/ComboRenderPipelineDescriptor.h"
	#include "utils/WGPUHelpers.h"

	namespace {
	struct CreatePipelineAsyncTask {
	wgpu::ComputePipeline computePipeline = nullptr;
	wgpu::RenderPipeline renderPipeline = nullptr;
	bool isCompleted = false;
	std::string message;
	};
	} // anonymous namespace

	class CreatePipelineAsyncTest : public DawnTest {
	protected:
	void ValidateCreateComputePipelineAsync(CreatePipelineAsyncTask* currentTask) {
	wgpu::BufferDescriptor bufferDesc;
	bufferDesc.size = sizeof(uint32_t);
	bufferDesc.usage = wgpu::BufferUsage::Storage \| wgpu::BufferUsage::CopySrc;
	wgpu::Buffer ssbo = device.CreateBuffer(&bufferDesc);

	wgpu::CommandBuffer commands;
	{
	wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
	wgpu::ComputePassEncoder pass = encoder.BeginComputePass();

	while (!currentTask->isCompleted) {
	WaitABit();
	}
	ASSERT_TRUE(currentTask->message.empty());
	ASSERT_NE(nullptr, currentTask->computePipeline.Get());
	wgpu::BindGroup bindGroup =
	utils::MakeBindGroup(device, currentTask->computePipeline.GetBindGroupLayout(0),
	{
	{0, ssbo, 0, sizeof(uint32_t)},
	});
	pass.SetBindGroup(0, bindGroup);
	pass.SetPipeline(currentTask->computePipeline);

	pass.Dispatch(1);
	pass.EndPass();

	commands = encoder.Finish();
	}

	queue.Submit(1, &commands);

	constexpr uint32_t kExpected = 1u;
	EXPECT_BUFFER_U32_EQ(kExpected, ssbo, 0);
	}

	void ValidateCreateComputePipelineAsync() {
	ValidateCreateComputePipelineAsync(&task);
	}

	CreatePipelineAsyncTask task;
	};

	// Verify the basic use of CreateComputePipelineAsync works on all backends.
	TEST_P(CreatePipelineAsyncTest, BasicUseOfCreateComputePipelineAsync) {
	wgpu::ComputePipelineDescriptor csDesc;
	csDesc.compute.module = utils::CreateShaderModule(device, R"(
	[[block]] struct SSBO {
	value : u32;
	};
	[[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

	[[stage(compute)]] fn main() {
	ssbo.value = 1u;
	})");
	csDesc.compute.entryPoint = "main";

	device.CreateComputePipelineAsync(
	&csDesc,
	[](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	},
	&task);

	ValidateCreateComputePipelineAsync();
	}

	// Verify CreateComputePipelineAsync() works as expected when there is any error that happens during
	// the creation of the compute pipeline. The SPEC requires that during the call of
	// CreateComputePipelineAsync() any error won't be forwarded to the error scope / unhandled error
	// callback.
	TEST_P(CreatePipelineAsyncTest, CreateComputePipelineFailed) {
	DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

	wgpu::ComputePipelineDescriptor csDesc;
	csDesc.compute.module = utils::CreateShaderModule(device, R"(
	[[block]] struct SSBO {
	value : u32;
	};
	[[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

	[[stage(compute)]] fn main() {
	ssbo.value = 1u;
	})");
	csDesc.compute.entryPoint = "main0";

	device.CreateComputePipelineAsync(
	&csDesc,
	[](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Error, status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	},
	&task);

	while (!task.isCompleted) {
	WaitABit();
	}

	ASSERT_FALSE(task.message.empty());
	ASSERT_EQ(nullptr, task.computePipeline.Get());
	}

	// Verify the basic use of CreateRenderPipelineAsync() works on all backends.
	TEST_P(CreatePipelineAsyncTest, BasicUseOfCreateRenderPipelineAsync) {
	constexpr wgpu::TextureFormat kRenderAttachmentFormat = wgpu::TextureFormat::RGBA8Unorm;

	utils::ComboRenderPipelineDescriptor renderPipelineDescriptor;
	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"(
	[[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
	return vec4<f32>(0.0, 1.0, 0.0, 1.0);
	})");
	renderPipelineDescriptor.vertex.module = vsModule;
	renderPipelineDescriptor.cFragment.module = fsModule;
	renderPipelineDescriptor.cTargets[0].format = kRenderAttachmentFormat;
	renderPipelineDescriptor.primitive.topology = wgpu::PrimitiveTopology::PointList;

	device.CreateRenderPipelineAsync(
	&renderPipelineDescriptor,
	[](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->renderPipeline = wgpu::RenderPipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	},
	&task);

	wgpu::TextureDescriptor textureDescriptor;
	textureDescriptor.size = {1, 1, 1};
	textureDescriptor.format = kRenderAttachmentFormat;
	textureDescriptor.usage = wgpu::TextureUsage::RenderAttachment \| wgpu::TextureUsage::CopySrc;
	wgpu::Texture outputTexture = device.CreateTexture(&textureDescriptor);

	utils::ComboRenderPassDescriptor renderPassDescriptor({outputTexture.CreateView()});
	renderPassDescriptor.cColorAttachments[0].loadOp = wgpu::LoadOp::Clear;
	renderPassDescriptor.cColorAttachments[0].clearColor = {1.f, 0.f, 0.f, 1.f};

	wgpu::CommandBuffer commands;
	{
	wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
	wgpu::RenderPassEncoder renderPassEncoder = encoder.BeginRenderPass(&renderPassDescriptor);

	while (!task.isCompleted) {
	WaitABit();
	}
	ASSERT_TRUE(task.message.empty());
	ASSERT_NE(nullptr, task.renderPipeline.Get());

	renderPassEncoder.SetPipeline(task.renderPipeline);
	renderPassEncoder.Draw(1);
	renderPassEncoder.EndPass();
	commands = encoder.Finish();
	}

	queue.Submit(1, &commands);

	EXPECT_PIXEL_RGBA8_EQ(RGBA8(0, 255, 0, 255), outputTexture, 0, 0);
	}

	// Verify CreateRenderPipelineAsync() works as expected when there is any error that happens during
	// the creation of the render pipeline. The SPEC requires that during the call of
	// CreateRenderPipelineAsync() any error won't be forwarded to the error scope / unhandled error
	// callback.
	TEST_P(CreatePipelineAsyncTest, CreateRenderPipelineFailed) {
	DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

	constexpr wgpu::TextureFormat kRenderAttachmentFormat = wgpu::TextureFormat::Depth32Float;

	utils::ComboRenderPipelineDescriptor renderPipelineDescriptor;
	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"(
	[[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
	return vec4<f32>(0.0, 1.0, 0.0, 1.0);
	})");
	renderPipelineDescriptor.vertex.module = vsModule;
	renderPipelineDescriptor.cFragment.module = fsModule;
	renderPipelineDescriptor.cTargets[0].format = kRenderAttachmentFormat;
	renderPipelineDescriptor.primitive.topology = wgpu::PrimitiveTopology::PointList;

	device.CreateRenderPipelineAsync(
	&renderPipelineDescriptor,
	[](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Error, status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->renderPipeline = wgpu::RenderPipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	},
	&task);

	while (!task.isCompleted) {
	WaitABit();
	}

	ASSERT_FALSE(task.message.empty());
	ASSERT_EQ(nullptr, task.computePipeline.Get());
	}

	// Verify there is no error when the device is released before the callback of
	// CreateComputePipelineAsync() is called.
	TEST_P(CreatePipelineAsyncTest, ReleaseDeviceBeforeCallbackOfCreateComputePipelineAsync) {
	wgpu::ComputePipelineDescriptor csDesc;
	csDesc.compute.module = utils::CreateShaderModule(device, R"(
	[[stage(compute)]] fn main() {
	})");
	csDesc.compute.entryPoint = "main";

	device.CreateComputePipelineAsync(
	&csDesc,
	[](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_DeviceDestroyed,
	status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	},
	&task);
	}

	// Verify there is no error when the device is released before the callback of
	// CreateRenderPipelineAsync() is called.
	TEST_P(CreatePipelineAsyncTest, ReleaseDeviceBeforeCallbackOfCreateRenderPipelineAsync) {
	utils::ComboRenderPipelineDescriptor renderPipelineDescriptor;
	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"(
	[[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
	return vec4<f32>(0.0, 1.0, 0.0, 1.0);
	})");
	renderPipelineDescriptor.vertex.module = vsModule;
	renderPipelineDescriptor.cFragment.module = fsModule;
	renderPipelineDescriptor.cTargets[0].format = wgpu::TextureFormat::RGBA8Unorm;
	renderPipelineDescriptor.primitive.topology = wgpu::PrimitiveTopology::PointList;

	device.CreateRenderPipelineAsync(
	&renderPipelineDescriptor,
	[](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_DeviceDestroyed,
	status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->renderPipeline = wgpu::RenderPipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	},
	&task);
	}

	// Verify the code path of CreateComputePipelineAsync() to directly return the compute pipeline
	// object from cache works correctly.
	TEST_P(CreatePipelineAsyncTest, CreateSameComputePipelineTwice) {
	wgpu::ComputePipelineDescriptor csDesc;
	csDesc.compute.module = utils::CreateShaderModule(device, R"(
	[[block]] struct SSBO {
	value : u32;
	};
	[[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

	[[stage(compute)]] fn main() {
	ssbo.value = 1u;
	})");
	csDesc.compute.entryPoint = "main";

	auto callback = [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	};

	// Create a pipeline object and save it into anotherTask.computePipeline.
	CreatePipelineAsyncTask anotherTask;
	device.CreateComputePipelineAsync(&csDesc, callback, &anotherTask);
	while (!anotherTask.isCompleted) {
	WaitABit();
	}
	ASSERT_TRUE(anotherTask.message.empty());
	ASSERT_NE(nullptr, anotherTask.computePipeline.Get());

	// Create another pipeline object task.comnputepipeline with the same compute pipeline
	// descriptor used in the creation of anotherTask.computePipeline. This time the pipeline
	// object should be directly got from the pipeline object cache.
	device.CreateComputePipelineAsync(&csDesc, callback, &task);
	ValidateCreateComputePipelineAsync();
	}

	// Verify creating compute pipeline with same descriptor and CreateComputePipelineAsync() at the
	// same time works correctly.
	TEST_P(CreatePipelineAsyncTest, CreateSamePipelineTwiceAtSameTime) {
	wgpu::ComputePipelineDescriptor csDesc;
	csDesc.compute.module = utils::CreateShaderModule(device, R"(
	[[block]] struct SSBO {
	value : u32;
	};
	[[group(0), binding(0)]] var<storage, read_write> ssbo : SSBO;

	[[stage(compute)]] fn main() {
	ssbo.value = 1u;
	})");
	csDesc.compute.entryPoint = "main";

	auto callback = [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
	const char* message, void* userdata) {
	EXPECT_EQ(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);

	CreatePipelineAsyncTask* task = static_cast<CreatePipelineAsyncTask*>(userdata);
	task->computePipeline = wgpu::ComputePipeline::Acquire(returnPipeline);
	task->isCompleted = true;
	task->message = message;
	};

	// Create two pipeline objects with same descriptor.
	CreatePipelineAsyncTask anotherTask;
	device.CreateComputePipelineAsync(&csDesc, callback, &task);
	device.CreateComputePipelineAsync(&csDesc, callback, &anotherTask);

	// Verify both task.computePipeline and anotherTask.computePipeline are created correctly.
	ValidateCreateComputePipelineAsync(&anotherTask);
	ValidateCreateComputePipelineAsync(&task);

	// Verify task.computePipeline and anotherTask.computePipeline are pointing to the same Dawn
	// object.
	if (!UsesWire()) {
	EXPECT_EQ(task.computePipeline.Get(), anotherTask.computePipeline.Get());
	}
	}

	DAWN_INSTANTIATE_TEST(CreatePipelineAsyncTest,
	D3D12Backend(),
	MetalBackend(),
	OpenGLBackend(),
	OpenGLESBackend(),
	VulkanBackend());