src/dawn/native/Adapter.cpp - dawn - Git at Google

 // Copyright 2018 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 "dawn/native/Adapter.h"

 #include <algorithm>
 #include <memory>

 #include "dawn/common/Constants.h"
 #include "dawn/common/GPUInfo.h"
 #include "dawn/common/Log.h"
 #include "dawn/native/ChainUtils_autogen.h"
 #include "dawn/native/Device.h"
 #include "dawn/native/Instance.h"
 #include "dawn/native/ValidationUtils_autogen.h"

 namespace dawn::native {

 AdapterBase::AdapterBase(InstanceBase* instance,
                          wgpu::BackendType backend,
                          const TogglesState& adapterToggles)
     : mInstance(instance), mBackend(backend), mTogglesState(adapterToggles) {
     ASSERT(adapterToggles.GetStage() == ToggleStage::Adapter);
 }

 AdapterBase::~AdapterBase() = default;

 MaybeError AdapterBase::Initialize() {
     DAWN_TRY_CONTEXT(InitializeImpl(), "initializing adapter (backend=%s)", mBackend);
     InitializeVendorArchitectureImpl();

     EnableFeature(Feature::DawnNative);
     EnableFeature(Feature::DawnInternalUsages);
     InitializeSupportedFeaturesImpl();

     DAWN_TRY_CONTEXT(
         InitializeSupportedLimitsImpl(&mLimits),
         "gathering supported limits for \"%s\" - \"%s\" (vendorId=%#06x deviceId=%#06x "
         "backend=%s type=%s)",
         mName, mDriverDescription, mVendorId, mDeviceId, mBackend, mAdapterType);

     // Enforce internal Dawn constants for some limits to ensure they don't go over fixed-size
     // arrays in Dawn's internal code.
     mLimits.v1.maxVertexBufferArrayStride =
         std::min(mLimits.v1.maxVertexBufferArrayStride, kMaxVertexBufferArrayStride);
     mLimits.v1.maxColorAttachments =
         std::min(mLimits.v1.maxColorAttachments, uint32_t(kMaxColorAttachments));
     mLimits.v1.maxBindGroups = std::min(mLimits.v1.maxBindGroups, kMaxBindGroups);
     mLimits.v1.maxVertexAttributes =
         std::min(mLimits.v1.maxVertexAttributes, uint32_t(kMaxVertexAttributes));
     mLimits.v1.maxVertexBuffers =
         std::min(mLimits.v1.maxVertexBuffers, uint32_t(kMaxVertexBuffers));
     mLimits.v1.maxInterStageShaderComponents =
         std::min(mLimits.v1.maxInterStageShaderComponents, kMaxInterStageShaderComponents);
     mLimits.v1.maxSampledTexturesPerShaderStage =
         std::min(mLimits.v1.maxSampledTexturesPerShaderStage, kMaxSampledTexturesPerShaderStage);
     mLimits.v1.maxSamplersPerShaderStage =
         std::min(mLimits.v1.maxSamplersPerShaderStage, kMaxSamplersPerShaderStage);
     mLimits.v1.maxStorageBuffersPerShaderStage =
         std::min(mLimits.v1.maxStorageBuffersPerShaderStage, kMaxStorageBuffersPerShaderStage);
     mLimits.v1.maxStorageTexturesPerShaderStage =
         std::min(mLimits.v1.maxStorageTexturesPerShaderStage, kMaxStorageTexturesPerShaderStage);
     mLimits.v1.maxUniformBuffersPerShaderStage =
         std::min(mLimits.v1.maxUniformBuffersPerShaderStage, kMaxUniformBuffersPerShaderStage);

     // Additional enforcement for dependent limits.
     mLimits.v1.maxStorageBufferBindingSize =
         std::min(mLimits.v1.maxStorageBufferBindingSize, mLimits.v1.maxBufferSize);
     mLimits.v1.maxUniformBufferBindingSize =
         std::min(mLimits.v1.maxUniformBufferBindingSize, mLimits.v1.maxBufferSize);

     return {};
 }

 InstanceBase* AdapterBase::APIGetInstance() const {
     auto instance = GetInstance();
     ASSERT(instance != nullptr);
     instance->Reference();
     return instance;
 }

 bool AdapterBase::APIGetLimits(SupportedLimits* limits) const {
     return GetLimits(limits);
 }

 void AdapterBase::APIGetProperties(AdapterProperties* properties) const {
     MaybeError result = ValidateSingleSType(properties->nextInChain,
                                             wgpu::SType::DawnAdapterPropertiesPowerPreference);
     if (result.IsError()) {
         mInstance->ConsumedError(result.AcquireError());
         return;
     }

     DawnAdapterPropertiesPowerPreference* powerPreferenceDesc = nullptr;
     FindInChain(properties->nextInChain, &powerPreferenceDesc);
     if (powerPreferenceDesc != nullptr) {
         powerPreferenceDesc->powerPreference = wgpu::PowerPreference::Undefined;
     }

     properties->vendorID = mVendorId;
     properties->vendorName = mVendorName.c_str();
     properties->architecture = mArchitectureName.c_str();
     properties->deviceID = mDeviceId;
     properties->name = mName.c_str();
     properties->driverDescription = mDriverDescription.c_str();
     properties->adapterType = mAdapterType;
     properties->backendType = mBackend;
 }

 bool AdapterBase::APIHasFeature(wgpu::FeatureName feature) const {
     return mSupportedFeatures.IsEnabled(feature);
 }

 size_t AdapterBase::APIEnumerateFeatures(wgpu::FeatureName* features) const {
     return mSupportedFeatures.EnumerateFeatures(features);
 }

 DeviceBase* AdapterBase::APICreateDevice(const DeviceDescriptor* descriptor) {
     DeviceDescriptor defaultDesc = {};
     if (descriptor == nullptr) {
         descriptor = &defaultDesc;
     }
     auto result = CreateDeviceInternal(descriptor);
     if (result.IsError()) {
         mInstance->ConsumedError(result.AcquireError());
         return nullptr;
     }
     return result.AcquireSuccess().Detach();
 }

 void AdapterBase::APIRequestDevice(const DeviceDescriptor* descriptor,
                                    WGPURequestDeviceCallback callback,
                                    void* userdata) {
     static constexpr DeviceDescriptor kDefaultDescriptor = {};
     if (descriptor == nullptr) {
         descriptor = &kDefaultDescriptor;
     }
     auto result = CreateDeviceInternal(descriptor);

     if (result.IsError()) {
         std::unique_ptr<ErrorData> errorData = result.AcquireError();
         // TODO(crbug.com/dawn/1122): Call callbacks only on wgpuInstanceProcessEvents
         callback(WGPURequestDeviceStatus_Error, nullptr, errorData->GetFormattedMessage().c_str(),
                  userdata);
         return;
     }

     Ref<DeviceBase> device = result.AcquireSuccess();

     WGPURequestDeviceStatus status =
         device == nullptr ? WGPURequestDeviceStatus_Unknown : WGPURequestDeviceStatus_Success;
     // TODO(crbug.com/dawn/1122): Call callbacks only on wgpuInstanceProcessEvents
     callback(status, ToAPI(device.Detach()), nullptr, userdata);
 }

 void AdapterBase::InitializeVendorArchitectureImpl() {
     mVendorName = gpu_info::GetVendorName(mVendorId);
     mArchitectureName = gpu_info::GetArchitectureName(mVendorId, mDeviceId);
 }

 uint32_t AdapterBase::GetVendorId() const {
     return mVendorId;
 }

 uint32_t AdapterBase::GetDeviceId() const {
     return mDeviceId;
 }

 const gpu_info::DriverVersion& AdapterBase::GetDriverVersion() const {
     return mDriverVersion;
 }

 wgpu::BackendType AdapterBase::GetBackendType() const {
     return mBackend;
 }

 InstanceBase* AdapterBase::GetInstance() const {
     return mInstance.Get();
 }

 FeaturesSet AdapterBase::GetSupportedFeatures() const {
     return mSupportedFeatures;
 }

 bool AdapterBase::SupportsAllRequiredFeatures(
     const ityp::span<size_t, const wgpu::FeatureName>& features) const {
     for (wgpu::FeatureName f : features) {
         if (!mSupportedFeatures.IsEnabled(f)) {
             return false;
         }
     }
     return true;
 }

 bool AdapterBase::GetLimits(SupportedLimits* limits) const {
     ASSERT(limits != nullptr);
     if (limits->nextInChain != nullptr) {
         return false;
     }
     if (mUseTieredLimits) {
         limits->limits = ApplyLimitTiers(mLimits.v1);
     } else {
         limits->limits = mLimits.v1;
     }
     return true;
 }

 const TogglesState& AdapterBase::GetTogglesState() const {
     return mTogglesState;
 }

 void AdapterBase::EnableFeature(Feature feature) {
     mSupportedFeatures.EnableFeature(feature);
 }

 MaybeError AdapterBase::ValidateFeatureSupportedWithToggles(wgpu::FeatureName feature,
                                                             const TogglesState& toggles) const {
     DAWN_TRY(ValidateFeatureName(feature));
     DAWN_INVALID_IF(!mSupportedFeatures.IsEnabled(feature),
                     "Requested feature %s is not supported.", feature);

     const FeatureInfo* featureInfo = GetInstance()->GetFeatureInfo(feature);
     // Experimental features are guarded by toggle DisallowUnsafeAPIs.
     if (featureInfo->featureState == FeatureInfo::FeatureState::Experimental) {
         // DisallowUnsafeAPIs toggle is by default enabled if not explicitly disabled.
         DAWN_INVALID_IF(toggles.IsEnabled(Toggle::DisallowUnsafeAPIs),
                         "Feature %s is guarded by toggle disallow_unsafe_apis.", featureInfo->name);
     }

     // Do backend-specific validation.
     return ValidateFeatureSupportedWithTogglesImpl(feature, toggles);
 }

 void AdapterBase::SetSupportedFeaturesForTesting(
     const std::vector<wgpu::FeatureName>& requiredFeatures) {
     mSupportedFeatures = {};
     for (wgpu::FeatureName f : requiredFeatures) {
         mSupportedFeatures.EnableFeature(f);
     }
 }

 ResultOrError<Ref<DeviceBase>> AdapterBase::CreateDeviceInternal(
     const DeviceDescriptor* descriptor) {
     ASSERT(descriptor != nullptr);

     // Create device toggles state from required toggles descriptor and inherited adapter toggles
     // state.
     const DawnTogglesDescriptor* deviceTogglesDesc = nullptr;
     FindInChain(descriptor->nextInChain, &deviceTogglesDesc);

     // Handle the deprecated DawnTogglesDeviceDescriptor
     // TODO(dawn:1495): Remove this fallback once Chromium is changed to use DawnToggleDescriptor
     // and DawnTogglesDeviceDescriptor is removed.
     const DawnTogglesDeviceDescriptor* deprecatedTogglesDeviceDesc = nullptr;
     DawnTogglesDescriptor convertedDeviceTogglesDesc = {};
     FindInChain(descriptor->nextInChain, &deprecatedTogglesDeviceDesc);

     if (deprecatedTogglesDeviceDesc) {
         // Emit the deprecation warning.
         dawn::WarningLog()
             << "DawnTogglesDeviceDescriptor is deprecated and replaced by DawnTogglesDescriptor.";
         // Ensure that at most one toggles descriptor is used.
         DAWN_INVALID_IF(
             deviceTogglesDesc && deprecatedTogglesDeviceDesc,
             "DawnTogglesDeviceDescriptor should not be used together with DawnTogglesDescriptor.");

         convertedDeviceTogglesDesc.enabledToggles =
             deprecatedTogglesDeviceDesc->forceEnabledToggles;
         convertedDeviceTogglesDesc.enabledTogglesCount =
             deprecatedTogglesDeviceDesc->forceEnabledTogglesCount;
         convertedDeviceTogglesDesc.disabledToggles =
             deprecatedTogglesDeviceDesc->forceDisabledToggles;
         convertedDeviceTogglesDesc.disabledTogglesCount =
             deprecatedTogglesDeviceDesc->forceDisabledTogglesCount;
         deviceTogglesDesc = &convertedDeviceTogglesDesc;
     }

     // Create device toggles state.
     TogglesState deviceToggles =
         TogglesState::CreateFromTogglesDescriptor(deviceTogglesDesc, ToggleStage::Device);
     deviceToggles.InheritFrom(mTogglesState);
     // Default toggles for all backend
     deviceToggles.Default(Toggle::LazyClearResourceOnFirstUse, true);

     // Backend-specific forced and default device toggles
     SetupBackendDeviceToggles(&deviceToggles);

     // Validate all required features are supported by the adapter and suitable under given toggles.
     // Note that certain toggles in device toggles state may be overriden by user and different from
     // the adapter toggles state.
     // TODO(dawn:1495): After implementing adapter toggles, decide whether we should validate
     // supported features using adapter toggles or device toggles.
     for (uint32_t i = 0; i < descriptor->requiredFeaturesCount; ++i) {
         wgpu::FeatureName feature = descriptor->requiredFeatures[i];
         DAWN_TRY(ValidateFeatureSupportedWithToggles(feature, deviceToggles));
     }

     if (descriptor->requiredLimits != nullptr) {
         DAWN_TRY_CONTEXT(ValidateLimits(mUseTieredLimits ? ApplyLimitTiers(mLimits.v1) : mLimits.v1,
                                         descriptor->requiredLimits->limits),
                          "validating required limits");

         DAWN_INVALID_IF(descriptor->requiredLimits->nextInChain != nullptr,
                         "nextInChain is not nullptr.");
     }
     return CreateDeviceImpl(descriptor, deviceToggles);
 }

 void AdapterBase::SetUseTieredLimits(bool useTieredLimits) {
     mUseTieredLimits = useTieredLimits;
 }

 void AdapterBase::ResetInternalDeviceForTesting() {
     mInstance->ConsumedError(ResetInternalDeviceForTestingImpl());
 }

 MaybeError AdapterBase::ResetInternalDeviceForTestingImpl() {
     return DAWN_INTERNAL_ERROR(
         "ResetInternalDeviceForTesting should only be used with the D3D12 backend.");
 }

 }  // namespace dawn::native
	// Copyright 2018 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 "dawn/native/Adapter.h"

	#include <algorithm>
	#include <memory>

	#include "dawn/common/Constants.h"
	#include "dawn/common/GPUInfo.h"
	#include "dawn/common/Log.h"
	#include "dawn/native/ChainUtils_autogen.h"
	#include "dawn/native/Device.h"
	#include "dawn/native/Instance.h"
	#include "dawn/native/ValidationUtils_autogen.h"

	namespace dawn::native {

	AdapterBase::AdapterBase(InstanceBase* instance,
	wgpu::BackendType backend,
	const TogglesState& adapterToggles)
	: mInstance(instance), mBackend(backend), mTogglesState(adapterToggles) {
	ASSERT(adapterToggles.GetStage() == ToggleStage::Adapter);
	}

	AdapterBase::~AdapterBase() = default;

	MaybeError AdapterBase::Initialize() {
	DAWN_TRY_CONTEXT(InitializeImpl(), "initializing adapter (backend=%s)", mBackend);
	InitializeVendorArchitectureImpl();

	EnableFeature(Feature::DawnNative);
	EnableFeature(Feature::DawnInternalUsages);
	InitializeSupportedFeaturesImpl();

	DAWN_TRY_CONTEXT(
	InitializeSupportedLimitsImpl(&mLimits),
	"gathering supported limits for \"%s\" - \"%s\" (vendorId=%#06x deviceId=%#06x "
	"backend=%s type=%s)",
	mName, mDriverDescription, mVendorId, mDeviceId, mBackend, mAdapterType);

	// Enforce internal Dawn constants for some limits to ensure they don't go over fixed-size
	// arrays in Dawn's internal code.
	mLimits.v1.maxVertexBufferArrayStride =
	std::min(mLimits.v1.maxVertexBufferArrayStride, kMaxVertexBufferArrayStride);
	mLimits.v1.maxColorAttachments =
	std::min(mLimits.v1.maxColorAttachments, uint32_t(kMaxColorAttachments));
	mLimits.v1.maxBindGroups = std::min(mLimits.v1.maxBindGroups, kMaxBindGroups);
	mLimits.v1.maxVertexAttributes =
	std::min(mLimits.v1.maxVertexAttributes, uint32_t(kMaxVertexAttributes));
	mLimits.v1.maxVertexBuffers =
	std::min(mLimits.v1.maxVertexBuffers, uint32_t(kMaxVertexBuffers));
	mLimits.v1.maxInterStageShaderComponents =
	std::min(mLimits.v1.maxInterStageShaderComponents, kMaxInterStageShaderComponents);
	mLimits.v1.maxSampledTexturesPerShaderStage =
	std::min(mLimits.v1.maxSampledTexturesPerShaderStage, kMaxSampledTexturesPerShaderStage);
	mLimits.v1.maxSamplersPerShaderStage =
	std::min(mLimits.v1.maxSamplersPerShaderStage, kMaxSamplersPerShaderStage);
	mLimits.v1.maxStorageBuffersPerShaderStage =
	std::min(mLimits.v1.maxStorageBuffersPerShaderStage, kMaxStorageBuffersPerShaderStage);
	mLimits.v1.maxStorageTexturesPerShaderStage =
	std::min(mLimits.v1.maxStorageTexturesPerShaderStage, kMaxStorageTexturesPerShaderStage);
	mLimits.v1.maxUniformBuffersPerShaderStage =
	std::min(mLimits.v1.maxUniformBuffersPerShaderStage, kMaxUniformBuffersPerShaderStage);

	// Additional enforcement for dependent limits.
	mLimits.v1.maxStorageBufferBindingSize =
	std::min(mLimits.v1.maxStorageBufferBindingSize, mLimits.v1.maxBufferSize);
	mLimits.v1.maxUniformBufferBindingSize =
	std::min(mLimits.v1.maxUniformBufferBindingSize, mLimits.v1.maxBufferSize);

	return {};
	}

	InstanceBase* AdapterBase::APIGetInstance() const {
	auto instance = GetInstance();
	ASSERT(instance != nullptr);
	instance->Reference();
	return instance;
	}

	bool AdapterBase::APIGetLimits(SupportedLimits* limits) const {
	return GetLimits(limits);
	}

	void AdapterBase::APIGetProperties(AdapterProperties* properties) const {
	MaybeError result = ValidateSingleSType(properties->nextInChain,
	wgpu::SType::DawnAdapterPropertiesPowerPreference);
	if (result.IsError()) {
	mInstance->ConsumedError(result.AcquireError());
	return;
	}

	DawnAdapterPropertiesPowerPreference* powerPreferenceDesc = nullptr;
	FindInChain(properties->nextInChain, &powerPreferenceDesc);
	if (powerPreferenceDesc != nullptr) {
	powerPreferenceDesc->powerPreference = wgpu::PowerPreference::Undefined;
	}

	properties->vendorID = mVendorId;
	properties->vendorName = mVendorName.c_str();
	properties->architecture = mArchitectureName.c_str();
	properties->deviceID = mDeviceId;
	properties->name = mName.c_str();
	properties->driverDescription = mDriverDescription.c_str();
	properties->adapterType = mAdapterType;
	properties->backendType = mBackend;
	}

	bool AdapterBase::APIHasFeature(wgpu::FeatureName feature) const {
	return mSupportedFeatures.IsEnabled(feature);
	}

	size_t AdapterBase::APIEnumerateFeatures(wgpu::FeatureName* features) const {
	return mSupportedFeatures.EnumerateFeatures(features);
	}

	DeviceBase* AdapterBase::APICreateDevice(const DeviceDescriptor* descriptor) {
	DeviceDescriptor defaultDesc = {};
	if (descriptor == nullptr) {
	descriptor = &defaultDesc;
	}
	auto result = CreateDeviceInternal(descriptor);
	if (result.IsError()) {
	mInstance->ConsumedError(result.AcquireError());
	return nullptr;
	}
	return result.AcquireSuccess().Detach();
	}

	void AdapterBase::APIRequestDevice(const DeviceDescriptor* descriptor,
	WGPURequestDeviceCallback callback,
	void* userdata) {
	static constexpr DeviceDescriptor kDefaultDescriptor = {};
	if (descriptor == nullptr) {
	descriptor = &kDefaultDescriptor;
	}
	auto result = CreateDeviceInternal(descriptor);

	if (result.IsError()) {
	std::unique_ptr<ErrorData> errorData = result.AcquireError();
	// TODO(crbug.com/dawn/1122): Call callbacks only on wgpuInstanceProcessEvents
	callback(WGPURequestDeviceStatus_Error, nullptr, errorData->GetFormattedMessage().c_str(),
	userdata);
	return;
	}

	Ref<DeviceBase> device = result.AcquireSuccess();

	WGPURequestDeviceStatus status =
	device == nullptr ? WGPURequestDeviceStatus_Unknown : WGPURequestDeviceStatus_Success;
	// TODO(crbug.com/dawn/1122): Call callbacks only on wgpuInstanceProcessEvents
	callback(status, ToAPI(device.Detach()), nullptr, userdata);
	}

	void AdapterBase::InitializeVendorArchitectureImpl() {
	mVendorName = gpu_info::GetVendorName(mVendorId);
	mArchitectureName = gpu_info::GetArchitectureName(mVendorId, mDeviceId);
	}

	uint32_t AdapterBase::GetVendorId() const {
	return mVendorId;
	}

	uint32_t AdapterBase::GetDeviceId() const {
	return mDeviceId;
	}

	const gpu_info::DriverVersion& AdapterBase::GetDriverVersion() const {
	return mDriverVersion;
	}

	wgpu::BackendType AdapterBase::GetBackendType() const {
	return mBackend;
	}

	InstanceBase* AdapterBase::GetInstance() const {
	return mInstance.Get();
	}

	FeaturesSet AdapterBase::GetSupportedFeatures() const {
	return mSupportedFeatures;
	}

	bool AdapterBase::SupportsAllRequiredFeatures(
	const ityp::span<size_t, const wgpu::FeatureName>& features) const {
	for (wgpu::FeatureName f : features) {
	if (!mSupportedFeatures.IsEnabled(f)) {
	return false;
	}
	}
	return true;
	}

	bool AdapterBase::GetLimits(SupportedLimits* limits) const {
	ASSERT(limits != nullptr);
	if (limits->nextInChain != nullptr) {
	return false;
	}
	if (mUseTieredLimits) {
	limits->limits = ApplyLimitTiers(mLimits.v1);
	} else {
	limits->limits = mLimits.v1;
	}
	return true;
	}

	const TogglesState& AdapterBase::GetTogglesState() const {
	return mTogglesState;
	}

	void AdapterBase::EnableFeature(Feature feature) {
	mSupportedFeatures.EnableFeature(feature);
	}

	MaybeError AdapterBase::ValidateFeatureSupportedWithToggles(wgpu::FeatureName feature,
	const TogglesState& toggles) const {
	DAWN_TRY(ValidateFeatureName(feature));
	DAWN_INVALID_IF(!mSupportedFeatures.IsEnabled(feature),
	"Requested feature %s is not supported.", feature);

	const FeatureInfo* featureInfo = GetInstance()->GetFeatureInfo(feature);
	// Experimental features are guarded by toggle DisallowUnsafeAPIs.
	if (featureInfo->featureState == FeatureInfo::FeatureState::Experimental) {
	// DisallowUnsafeAPIs toggle is by default enabled if not explicitly disabled.
	DAWN_INVALID_IF(toggles.IsEnabled(Toggle::DisallowUnsafeAPIs),
	"Feature %s is guarded by toggle disallow_unsafe_apis.", featureInfo->name);
	}

	// Do backend-specific validation.
	return ValidateFeatureSupportedWithTogglesImpl(feature, toggles);
	}

	void AdapterBase::SetSupportedFeaturesForTesting(
	const std::vector<wgpu::FeatureName>& requiredFeatures) {
	mSupportedFeatures = {};
	for (wgpu::FeatureName f : requiredFeatures) {
	mSupportedFeatures.EnableFeature(f);
	}
	}

	ResultOrError<Ref<DeviceBase>> AdapterBase::CreateDeviceInternal(
	const DeviceDescriptor* descriptor) {
	ASSERT(descriptor != nullptr);

	// Create device toggles state from required toggles descriptor and inherited adapter toggles
	// state.
	const DawnTogglesDescriptor* deviceTogglesDesc = nullptr;
	FindInChain(descriptor->nextInChain, &deviceTogglesDesc);

	// Handle the deprecated DawnTogglesDeviceDescriptor
	// TODO(dawn:1495): Remove this fallback once Chromium is changed to use DawnToggleDescriptor
	// and DawnTogglesDeviceDescriptor is removed.
	const DawnTogglesDeviceDescriptor* deprecatedTogglesDeviceDesc = nullptr;
	DawnTogglesDescriptor convertedDeviceTogglesDesc = {};
	FindInChain(descriptor->nextInChain, &deprecatedTogglesDeviceDesc);

	if (deprecatedTogglesDeviceDesc) {
	// Emit the deprecation warning.
	dawn::WarningLog()
	<< "DawnTogglesDeviceDescriptor is deprecated and replaced by DawnTogglesDescriptor.";
	// Ensure that at most one toggles descriptor is used.
	DAWN_INVALID_IF(
	deviceTogglesDesc && deprecatedTogglesDeviceDesc,
	"DawnTogglesDeviceDescriptor should not be used together with DawnTogglesDescriptor.");

	convertedDeviceTogglesDesc.enabledToggles =
	deprecatedTogglesDeviceDesc->forceEnabledToggles;
	convertedDeviceTogglesDesc.enabledTogglesCount =
	deprecatedTogglesDeviceDesc->forceEnabledTogglesCount;
	convertedDeviceTogglesDesc.disabledToggles =
	deprecatedTogglesDeviceDesc->forceDisabledToggles;
	convertedDeviceTogglesDesc.disabledTogglesCount =
	deprecatedTogglesDeviceDesc->forceDisabledTogglesCount;
	deviceTogglesDesc = &convertedDeviceTogglesDesc;
	}

	// Create device toggles state.
	TogglesState deviceToggles =
	TogglesState::CreateFromTogglesDescriptor(deviceTogglesDesc, ToggleStage::Device);
	deviceToggles.InheritFrom(mTogglesState);
	// Default toggles for all backend
	deviceToggles.Default(Toggle::LazyClearResourceOnFirstUse, true);

	// Backend-specific forced and default device toggles
	SetupBackendDeviceToggles(&deviceToggles);

	// Validate all required features are supported by the adapter and suitable under given toggles.
	// Note that certain toggles in device toggles state may be overriden by user and different from
	// the adapter toggles state.
	// TODO(dawn:1495): After implementing adapter toggles, decide whether we should validate
	// supported features using adapter toggles or device toggles.
	for (uint32_t i = 0; i < descriptor->requiredFeaturesCount; ++i) {
	wgpu::FeatureName feature = descriptor->requiredFeatures[i];
	DAWN_TRY(ValidateFeatureSupportedWithToggles(feature, deviceToggles));
	}

	if (descriptor->requiredLimits != nullptr) {
	DAWN_TRY_CONTEXT(ValidateLimits(mUseTieredLimits ? ApplyLimitTiers(mLimits.v1) : mLimits.v1,
	descriptor->requiredLimits->limits),
	"validating required limits");

	DAWN_INVALID_IF(descriptor->requiredLimits->nextInChain != nullptr,
	"nextInChain is not nullptr.");
	}
	return CreateDeviceImpl(descriptor, deviceToggles);
	}

	void AdapterBase::SetUseTieredLimits(bool useTieredLimits) {
	mUseTieredLimits = useTieredLimits;
	}

	void AdapterBase::ResetInternalDeviceForTesting() {
	mInstance->ConsumedError(ResetInternalDeviceForTestingImpl());
	}

	MaybeError AdapterBase::ResetInternalDeviceForTestingImpl() {
	return DAWN_INTERNAL_ERROR(
	"ResetInternalDeviceForTesting should only be used with the D3D12 backend.");
	}

	} // namespace dawn::native