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

 // 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 "utils/WGPUHelpers.h"

 #include <initializer_list>

 constexpr static std::initializer_list<uint32_t> kSentinelData{0, 0, 0};

 class ComputeDispatchTests : public DawnTest {
   protected:
     void SetUp() override {
         DawnTest::SetUp();

         // Write workgroup number into the output buffer if we saw the biggest dispatch
         // To make sure the dispatch was not called, write maximum u32 value for 0 dispatches
         wgpu::ShaderModule module = utils::CreateShaderModule(device, R"(
             struct OutputBuf {
                 workGroups : vec3<u32>;
             };

             [[group(0), binding(0)]] var<storage, read_write> output : OutputBuf;

             [[stage(compute), workgroup_size(1, 1, 1)]]
             fn main([[builtin(global_invocation_id)]] GlobalInvocationID : vec3<u32>,
                     [[builtin(num_workgroups)]] dispatch : vec3<u32>) {
                 if (dispatch.x == 0u || dispatch.y == 0u || dispatch.z == 0u) {
                     output.workGroups = vec3<u32>(0xFFFFFFFFu, 0xFFFFFFFFu, 0xFFFFFFFFu);
                     return;
                 }

                 if (all(GlobalInvocationID == dispatch - vec3<u32>(1u, 1u, 1u))) {
                     output.workGroups = dispatch;
                 }
             })");

         wgpu::ComputePipelineDescriptor csDesc;
         csDesc.compute.module = module;
         csDesc.compute.entryPoint = "main";
         pipeline = device.CreateComputePipeline(&csDesc);

         // Test the use of the compute pipelines without using [[num_workgroups]]
         wgpu::ShaderModule moduleWithoutNumWorkgroups = utils::CreateShaderModule(device, R"(
             struct InputBuf {
                 expectedDispatch : vec3<u32>;
             };
             struct OutputBuf {
                 workGroups : vec3<u32>;
             };

             [[group(0), binding(0)]] var<uniform> input : InputBuf;
             [[group(0), binding(1)]] var<storage, read_write> output : OutputBuf;

             [[stage(compute), workgroup_size(1, 1, 1)]]
             fn main([[builtin(global_invocation_id)]] GlobalInvocationID : vec3<u32>) {
                 let dispatch : vec3<u32> = input.expectedDispatch;

                 if (dispatch.x == 0u || dispatch.y == 0u || dispatch.z == 0u) {
                     output.workGroups = vec3<u32>(0xFFFFFFFFu, 0xFFFFFFFFu, 0xFFFFFFFFu);
                     return;
                 }

                 if (all(GlobalInvocationID == dispatch - vec3<u32>(1u, 1u, 1u))) {
                     output.workGroups = dispatch;
                 }
             })");
         csDesc.compute.module = moduleWithoutNumWorkgroups;
         pipelineWithoutNumWorkgroups = device.CreateComputePipeline(&csDesc);
     }

     void DirectTest(uint32_t x, uint32_t y, uint32_t z) {
         // Set up dst storage buffer to contain dispatch x, y, z
         wgpu::Buffer dst = utils::CreateBufferFromData<uint32_t>(
             device,
             wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst,
             kSentinelData);

         // Set up bind group and issue dispatch
         wgpu::BindGroup bindGroup = utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0),
                                                          {
                                                              {0, dst, 0, 3 * sizeof(uint32_t)},
                                                          });

         wgpu::CommandBuffer commands;
         {
             wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
             wgpu::ComputePassEncoder pass = encoder.BeginComputePass();
             pass.SetPipeline(pipeline);
             pass.SetBindGroup(0, bindGroup);
             pass.Dispatch(x, y, z);
             pass.EndPass();

             commands = encoder.Finish();
         }

         queue.Submit(1, &commands);

         std::vector<uint32_t> expected =
             x == 0 || y == 0 || z == 0 ? kSentinelData : std::initializer_list<uint32_t>{x, y, z};

         // Verify the dispatch got called if all group counts are not zero
         EXPECT_BUFFER_U32_RANGE_EQ(&expected[0], dst, 0, 3);
     }

     void IndirectTest(std::vector<uint32_t> indirectBufferData,
                       uint64_t indirectOffset,
                       bool useNumWorkgroups = true) {
         // Set up dst storage buffer to contain dispatch x, y, z
         wgpu::Buffer dst = utils::CreateBufferFromData<uint32_t>(
             device,
             wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst,
             kSentinelData);

         wgpu::Buffer indirectBuffer = utils::CreateBufferFromData(
             device, &indirectBufferData[0], indirectBufferData.size() * sizeof(uint32_t),
             wgpu::BufferUsage::Indirect);

         uint32_t indirectStart = indirectOffset / sizeof(uint32_t);

         // Set up bind group and issue dispatch
         wgpu::BindGroup bindGroup;
         wgpu::ComputePipeline computePipelineForTest;

         if (useNumWorkgroups) {
             computePipelineForTest = pipeline;
             bindGroup = utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0),
                                              {
                                                  {0, dst, 0, 3 * sizeof(uint32_t)},
                                              });
         } else {
             computePipelineForTest = pipelineWithoutNumWorkgroups;
             wgpu::Buffer expectedBuffer =
                 utils::CreateBufferFromData(device, &indirectBufferData[indirectStart],
                                             3 * sizeof(uint32_t), wgpu::BufferUsage::Uniform);
             bindGroup =
                 utils::MakeBindGroup(device, pipelineWithoutNumWorkgroups.GetBindGroupLayout(0),
                                      {
                                          {0, expectedBuffer, 0, 3 * sizeof(uint32_t)},
                                          {1, dst, 0, 3 * sizeof(uint32_t)},
                                      });
         }

         wgpu::CommandBuffer commands;
         {
             wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
             wgpu::ComputePassEncoder pass = encoder.BeginComputePass();
             pass.SetPipeline(computePipelineForTest);
             pass.SetBindGroup(0, bindGroup);
             pass.DispatchIndirect(indirectBuffer, indirectOffset);
             pass.EndPass();

             commands = encoder.Finish();
         }

         queue.Submit(1, &commands);

         std::vector<uint32_t> expected;

         uint32_t maxComputeWorkgroupsPerDimension =
             GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;
         if (indirectBufferData[indirectStart] == 0 || indirectBufferData[indirectStart + 1] == 0 ||
             indirectBufferData[indirectStart + 2] == 0 ||
             indirectBufferData[indirectStart] > maxComputeWorkgroupsPerDimension ||
             indirectBufferData[indirectStart + 1] > maxComputeWorkgroupsPerDimension ||
             indirectBufferData[indirectStart + 2] > maxComputeWorkgroupsPerDimension) {
             expected = kSentinelData;
         } else {
             expected.assign(indirectBufferData.begin() + indirectStart,
                             indirectBufferData.begin() + indirectStart + 3);
         }

         // Verify the dispatch got called with group counts in indirect buffer if all group counts
         // are not zero
         EXPECT_BUFFER_U32_RANGE_EQ(&expected[0], dst, 0, 3);
     }

   private:
     wgpu::ComputePipeline pipeline;
     wgpu::ComputePipeline pipelineWithoutNumWorkgroups;
 };

 // Test basic direct
 TEST_P(ComputeDispatchTests, DirectBasic) {
     DirectTest(2, 3, 4);
 }

 // Test no-op direct
 TEST_P(ComputeDispatchTests, DirectNoop) {
     // All dimensions are 0s
     DirectTest(0, 0, 0);

     // Only x dimension is 0
     DirectTest(0, 3, 4);

     // Only y dimension is 0
     DirectTest(2, 0, 4);

     // Only z dimension is 0
     DirectTest(2, 3, 0);
 }

 // Test basic indirect
 TEST_P(ComputeDispatchTests, IndirectBasic) {
 #ifdef DAWN_PLATFORM_32_BIT
     // TODO(crbug.com/dawn/1196): Fails on Chromium's Quadro P400 bots
     DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsNvidia());
 #endif
     // TODO(crbug.com/dawn/1262): Fails with the full validation turned on.
     DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());

     IndirectTest({2, 3, 4}, 0);
 }

 // Test basic indirect without using [[num_workgroups]]
 TEST_P(ComputeDispatchTests, IndirectBasicWithoutNumWorkgroups) {
     IndirectTest({2, 3, 4}, 0, false);
 }

 // Test no-op indirect
 TEST_P(ComputeDispatchTests, IndirectNoop) {
     // All dimensions are 0s
     IndirectTest({0, 0, 0}, 0);

     // Only x dimension is 0
     IndirectTest({0, 3, 4}, 0);

     // Only y dimension is 0
     IndirectTest({2, 0, 4}, 0);

     // Only z dimension is 0
     IndirectTest({2, 3, 0}, 0);
 }

 // Test indirect with buffer offset
 TEST_P(ComputeDispatchTests, IndirectOffset) {
 #ifdef DAWN_PLATFORM_32_BIT
     // TODO(crbug.com/dawn/1196): Fails on Chromium's Quadro P400 bots
     DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsNvidia());
 #endif
     // TODO(crbug.com/dawn/1262): Fails with the full validation turned on.
     DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());

     IndirectTest({0, 0, 0, 2, 3, 4}, 3 * sizeof(uint32_t));
 }

 // Test indirect with buffer offset without using [[num_workgroups]]
 TEST_P(ComputeDispatchTests, IndirectOffsetWithoutNumWorkgroups) {
     IndirectTest({0, 0, 0, 2, 3, 4}, 3 * sizeof(uint32_t), false);
 }

 // Test indirect dispatches at max limit.
 TEST_P(ComputeDispatchTests, MaxWorkgroups) {
 #ifdef DAWN_PLATFORM_32_BIT
     // TODO(crbug.com/dawn/1196): Fails on Chromium's Quadro P400 bots
     DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsNvidia());
 #endif
     // TODO(crbug.com/dawn/1262): Fails with the full validation turned on.
     DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());

     // TODO(crbug.com/dawn/1165): Fails with WARP
     DAWN_SUPPRESS_TEST_IF(IsWARP());

     uint32_t max = GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;

     // Test that the maximum works in each dimension.
     // Note: Testing (max, max, max) is very slow.
     IndirectTest({max, 3, 4}, 0);
     IndirectTest({2, max, 4}, 0);
     IndirectTest({2, 3, max}, 0);
 }

 // Test indirect dispatches exceeding the max limit are noop-ed.
 TEST_P(ComputeDispatchTests, ExceedsMaxWorkgroupsNoop) {
     DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

     // TODO(crbug.com/dawn/839): Investigate why this test fails with WARP.
     DAWN_SUPPRESS_TEST_IF(IsWARP());

     uint32_t max = GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;

     // All dimensions are above the max
     IndirectTest({max + 1, max + 1, max + 1}, 0);

     // Only x dimension is above the max
     IndirectTest({max + 1, 3, 4}, 0);
     IndirectTest({2 * max, 3, 4}, 0);

     // Only y dimension is above the max
     IndirectTest({2, max + 1, 4}, 0);
     IndirectTest({2, 2 * max, 4}, 0);

     // Only z dimension is above the max
     IndirectTest({2, 3, max + 1}, 0);
     IndirectTest({2, 3, 2 * max}, 0);
 }

 // Test indirect dispatches exceeding the max limit with an offset are noop-ed.
 TEST_P(ComputeDispatchTests, ExceedsMaxWorkgroupsWithOffsetNoop) {
     DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

     // TODO(crbug.com/dawn/839): Investigate why this test fails with WARP.
     DAWN_SUPPRESS_TEST_IF(IsWARP());

     uint32_t max = GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;

     IndirectTest({1, 2, 3, max + 1, 4, 5}, 1 * sizeof(uint32_t));
     IndirectTest({1, 2, 3, max + 1, 4, 5}, 2 * sizeof(uint32_t));
     IndirectTest({1, 2, 3, max + 1, 4, 5}, 3 * sizeof(uint32_t));
 }

 DAWN_INSTANTIATE_TEST(ComputeDispatchTests,
                       D3D12Backend(),
                       MetalBackend(),
                       OpenGLBackend(),
                       OpenGLESBackend(),
                       VulkanBackend());
	// 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 "utils/WGPUHelpers.h"

	#include <initializer_list>

	constexpr static std::initializer_list<uint32_t> kSentinelData{0, 0, 0};

	class ComputeDispatchTests : public DawnTest {
	protected:
	void SetUp() override {
	DawnTest::SetUp();

	// Write workgroup number into the output buffer if we saw the biggest dispatch
	// To make sure the dispatch was not called, write maximum u32 value for 0 dispatches
	wgpu::ShaderModule module = utils::CreateShaderModule(device, R"(
	struct OutputBuf {
	workGroups : vec3<u32>;
	};

	[[group(0), binding(0)]] var<storage, read_write> output : OutputBuf;

	[[stage(compute), workgroup_size(1, 1, 1)]]
	fn main([[builtin(global_invocation_id)]] GlobalInvocationID : vec3<u32>,
	[[builtin(num_workgroups)]] dispatch : vec3<u32>) {
	if (dispatch.x == 0u \|\| dispatch.y == 0u \|\| dispatch.z == 0u) {
	output.workGroups = vec3<u32>(0xFFFFFFFFu, 0xFFFFFFFFu, 0xFFFFFFFFu);
	return;
	}

	if (all(GlobalInvocationID == dispatch - vec3<u32>(1u, 1u, 1u))) {
	output.workGroups = dispatch;
	}
	})");

	wgpu::ComputePipelineDescriptor csDesc;
	csDesc.compute.module = module;
	csDesc.compute.entryPoint = "main";
	pipeline = device.CreateComputePipeline(&csDesc);

	// Test the use of the compute pipelines without using [[num_workgroups]]
	wgpu::ShaderModule moduleWithoutNumWorkgroups = utils::CreateShaderModule(device, R"(
	struct InputBuf {
	expectedDispatch : vec3<u32>;
	};
	struct OutputBuf {
	workGroups : vec3<u32>;
	};

	[[group(0), binding(0)]] var<uniform> input : InputBuf;
	[[group(0), binding(1)]] var<storage, read_write> output : OutputBuf;

	[[stage(compute), workgroup_size(1, 1, 1)]]
	fn main([[builtin(global_invocation_id)]] GlobalInvocationID : vec3<u32>) {
	let dispatch : vec3<u32> = input.expectedDispatch;

	if (dispatch.x == 0u \|\| dispatch.y == 0u \|\| dispatch.z == 0u) {
	output.workGroups = vec3<u32>(0xFFFFFFFFu, 0xFFFFFFFFu, 0xFFFFFFFFu);
	return;
	}

	if (all(GlobalInvocationID == dispatch - vec3<u32>(1u, 1u, 1u))) {
	output.workGroups = dispatch;
	}
	})");
	csDesc.compute.module = moduleWithoutNumWorkgroups;
	pipelineWithoutNumWorkgroups = device.CreateComputePipeline(&csDesc);
	}

	void DirectTest(uint32_t x, uint32_t y, uint32_t z) {
	// Set up dst storage buffer to contain dispatch x, y, z
	wgpu::Buffer dst = utils::CreateBufferFromData<uint32_t>(
	device,
	wgpu::BufferUsage::Storage \| wgpu::BufferUsage::CopySrc \| wgpu::BufferUsage::CopyDst,
	kSentinelData);

	// Set up bind group and issue dispatch
	wgpu::BindGroup bindGroup = utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0),
	{
	{0, dst, 0, 3 * sizeof(uint32_t)},
	});

	wgpu::CommandBuffer commands;
	{
	wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
	wgpu::ComputePassEncoder pass = encoder.BeginComputePass();
	pass.SetPipeline(pipeline);
	pass.SetBindGroup(0, bindGroup);
	pass.Dispatch(x, y, z);
	pass.EndPass();

	commands = encoder.Finish();
	}

	queue.Submit(1, &commands);

	std::vector<uint32_t> expected =
	x == 0 \|\| y == 0 \|\| z == 0 ? kSentinelData : std::initializer_list<uint32_t>{x, y, z};

	// Verify the dispatch got called if all group counts are not zero
	EXPECT_BUFFER_U32_RANGE_EQ(&expected[0], dst, 0, 3);
	}

	void IndirectTest(std::vector<uint32_t> indirectBufferData,
	uint64_t indirectOffset,
	bool useNumWorkgroups = true) {
	// Set up dst storage buffer to contain dispatch x, y, z
	wgpu::Buffer dst = utils::CreateBufferFromData<uint32_t>(
	device,
	wgpu::BufferUsage::Storage \| wgpu::BufferUsage::CopySrc \| wgpu::BufferUsage::CopyDst,
	kSentinelData);

	wgpu::Buffer indirectBuffer = utils::CreateBufferFromData(
	device, &indirectBufferData[0], indirectBufferData.size() * sizeof(uint32_t),
	wgpu::BufferUsage::Indirect);

	uint32_t indirectStart = indirectOffset / sizeof(uint32_t);

	// Set up bind group and issue dispatch
	wgpu::BindGroup bindGroup;
	wgpu::ComputePipeline computePipelineForTest;

	if (useNumWorkgroups) {
	computePipelineForTest = pipeline;
	bindGroup = utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0),
	{
	{0, dst, 0, 3 * sizeof(uint32_t)},
	});
	} else {
	computePipelineForTest = pipelineWithoutNumWorkgroups;
	wgpu::Buffer expectedBuffer =
	utils::CreateBufferFromData(device, &indirectBufferData[indirectStart],
	3 * sizeof(uint32_t), wgpu::BufferUsage::Uniform);
	bindGroup =
	utils::MakeBindGroup(device, pipelineWithoutNumWorkgroups.GetBindGroupLayout(0),
	{
	{0, expectedBuffer, 0, 3 * sizeof(uint32_t)},
	{1, dst, 0, 3 * sizeof(uint32_t)},
	});
	}

	wgpu::CommandBuffer commands;
	{
	wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
	wgpu::ComputePassEncoder pass = encoder.BeginComputePass();
	pass.SetPipeline(computePipelineForTest);
	pass.SetBindGroup(0, bindGroup);
	pass.DispatchIndirect(indirectBuffer, indirectOffset);
	pass.EndPass();

	commands = encoder.Finish();
	}

	queue.Submit(1, &commands);

	std::vector<uint32_t> expected;

	uint32_t maxComputeWorkgroupsPerDimension =
	GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;
	if (indirectBufferData[indirectStart] == 0 \|\| indirectBufferData[indirectStart + 1] == 0 \|\|
	indirectBufferData[indirectStart + 2] == 0 \|\|
	indirectBufferData[indirectStart] > maxComputeWorkgroupsPerDimension \|\|
	indirectBufferData[indirectStart + 1] > maxComputeWorkgroupsPerDimension \|\|
	indirectBufferData[indirectStart + 2] > maxComputeWorkgroupsPerDimension) {
	expected = kSentinelData;
	} else {
	expected.assign(indirectBufferData.begin() + indirectStart,
	indirectBufferData.begin() + indirectStart + 3);
	}

	// Verify the dispatch got called with group counts in indirect buffer if all group counts
	// are not zero
	EXPECT_BUFFER_U32_RANGE_EQ(&expected[0], dst, 0, 3);
	}

	private:
	wgpu::ComputePipeline pipeline;
	wgpu::ComputePipeline pipelineWithoutNumWorkgroups;
	};

	// Test basic direct
	TEST_P(ComputeDispatchTests, DirectBasic) {
	DirectTest(2, 3, 4);
	}

	// Test no-op direct
	TEST_P(ComputeDispatchTests, DirectNoop) {
	// All dimensions are 0s
	DirectTest(0, 0, 0);

	// Only x dimension is 0
	DirectTest(0, 3, 4);

	// Only y dimension is 0
	DirectTest(2, 0, 4);

	// Only z dimension is 0
	DirectTest(2, 3, 0);
	}

	// Test basic indirect
	TEST_P(ComputeDispatchTests, IndirectBasic) {
	#ifdef DAWN_PLATFORM_32_BIT
	// TODO(crbug.com/dawn/1196): Fails on Chromium's Quadro P400 bots
	DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsNvidia());
	#endif
	// TODO(crbug.com/dawn/1262): Fails with the full validation turned on.
	DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());

	IndirectTest({2, 3, 4}, 0);
	}

	// Test basic indirect without using [[num_workgroups]]
	TEST_P(ComputeDispatchTests, IndirectBasicWithoutNumWorkgroups) {
	IndirectTest({2, 3, 4}, 0, false);
	}

	// Test no-op indirect
	TEST_P(ComputeDispatchTests, IndirectNoop) {
	// All dimensions are 0s
	IndirectTest({0, 0, 0}, 0);

	// Only x dimension is 0
	IndirectTest({0, 3, 4}, 0);

	// Only y dimension is 0
	IndirectTest({2, 0, 4}, 0);

	// Only z dimension is 0
	IndirectTest({2, 3, 0}, 0);
	}

	// Test indirect with buffer offset
	TEST_P(ComputeDispatchTests, IndirectOffset) {
	#ifdef DAWN_PLATFORM_32_BIT
	// TODO(crbug.com/dawn/1196): Fails on Chromium's Quadro P400 bots
	DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsNvidia());
	#endif
	// TODO(crbug.com/dawn/1262): Fails with the full validation turned on.
	DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());

	IndirectTest({0, 0, 0, 2, 3, 4}, 3 * sizeof(uint32_t));
	}

	// Test indirect with buffer offset without using [[num_workgroups]]
	TEST_P(ComputeDispatchTests, IndirectOffsetWithoutNumWorkgroups) {
	IndirectTest({0, 0, 0, 2, 3, 4}, 3 * sizeof(uint32_t), false);
	}

	// Test indirect dispatches at max limit.
	TEST_P(ComputeDispatchTests, MaxWorkgroups) {
	#ifdef DAWN_PLATFORM_32_BIT
	// TODO(crbug.com/dawn/1196): Fails on Chromium's Quadro P400 bots
	DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsNvidia());
	#endif
	// TODO(crbug.com/dawn/1262): Fails with the full validation turned on.
	DAWN_SUPPRESS_TEST_IF(IsD3D12() && IsBackendValidationEnabled());

	// TODO(crbug.com/dawn/1165): Fails with WARP
	DAWN_SUPPRESS_TEST_IF(IsWARP());

	uint32_t max = GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;

	// Test that the maximum works in each dimension.
	// Note: Testing (max, max, max) is very slow.
	IndirectTest({max, 3, 4}, 0);
	IndirectTest({2, max, 4}, 0);
	IndirectTest({2, 3, max}, 0);
	}

	// Test indirect dispatches exceeding the max limit are noop-ed.
	TEST_P(ComputeDispatchTests, ExceedsMaxWorkgroupsNoop) {
	DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

	// TODO(crbug.com/dawn/839): Investigate why this test fails with WARP.
	DAWN_SUPPRESS_TEST_IF(IsWARP());

	uint32_t max = GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;

	// All dimensions are above the max
	IndirectTest({max + 1, max + 1, max + 1}, 0);

	// Only x dimension is above the max
	IndirectTest({max + 1, 3, 4}, 0);
	IndirectTest({2 * max, 3, 4}, 0);

	// Only y dimension is above the max
	IndirectTest({2, max + 1, 4}, 0);
	IndirectTest({2, 2 * max, 4}, 0);

	// Only z dimension is above the max
	IndirectTest({2, 3, max + 1}, 0);
	IndirectTest({2, 3, 2 * max}, 0);
	}

	// Test indirect dispatches exceeding the max limit with an offset are noop-ed.
	TEST_P(ComputeDispatchTests, ExceedsMaxWorkgroupsWithOffsetNoop) {
	DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("skip_validation"));

	// TODO(crbug.com/dawn/839): Investigate why this test fails with WARP.
	DAWN_SUPPRESS_TEST_IF(IsWARP());

	uint32_t max = GetSupportedLimits().limits.maxComputeWorkgroupsPerDimension;

	IndirectTest({1, 2, 3, max + 1, 4, 5}, 1 * sizeof(uint32_t));
	IndirectTest({1, 2, 3, max + 1, 4, 5}, 2 * sizeof(uint32_t));
	IndirectTest({1, 2, 3, max + 1, 4, 5}, 3 * sizeof(uint32_t));
	}

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