// 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 "dawn/native/d3d12/PhysicalDeviceD3D12.h"

#include <string>
#include <utility>

#include "dawn/common/Constants.h"
#include "dawn/common/Platform.h"
#include "dawn/common/WindowsUtils.h"
#include "dawn/native/Instance.h"
#include "dawn/native/d3d/D3DError.h"
#include "dawn/native/d3d12/BackendD3D12.h"
#include "dawn/native/d3d12/DeviceD3D12.h"
#include "dawn/native/d3d12/PlatformFunctionsD3D12.h"
#include "dawn/native/d3d12/UtilsD3D12.h"

namespace dawn::native::d3d12 {

PhysicalDevice::PhysicalDevice(Backend* backend, ComPtr<IDXGIAdapter3> hardwareAdapter)
    : Base(backend, std::move(hardwareAdapter), wgpu::BackendType::D3D12) {}

PhysicalDevice::~PhysicalDevice() {
    CleanUpDebugLayerFilters();
}

bool PhysicalDevice::SupportsExternalImages() const {
    // Via dawn::native::d3d::ExternalImageDXGI::Create
    return true;
}

bool PhysicalDevice::SupportsFeatureLevel(FeatureLevel) const {
    return true;
}

const D3D12DeviceInfo& PhysicalDevice::GetDeviceInfo() const {
    return mDeviceInfo;
}

Backend* PhysicalDevice::GetBackend() const {
    return static_cast<Backend*>(Base::GetBackend());
}

ComPtr<ID3D12Device> PhysicalDevice::GetDevice() const {
    return mD3d12Device;
}

MaybeError PhysicalDevice::InitializeImpl() {
    DAWN_TRY(Base::InitializeImpl());
    // D3D12 cannot check for feature support without a device.
    // Create the device to populate the adapter properties then reuse it when needed for actual
    // rendering.
    const PlatformFunctions* functions = GetBackend()->GetFunctions();
    if (FAILED(functions->d3d12CreateDevice(GetHardwareAdapter(), D3D_FEATURE_LEVEL_11_0,
                                            __uuidof(ID3D12Device), &mD3d12Device))) {
        return DAWN_INTERNAL_ERROR("D3D12CreateDevice failed");
    }

    DAWN_TRY(InitializeDebugLayerFilters());

    DAWN_TRY_ASSIGN(mDeviceInfo, GatherDeviceInfo(*this));

    // Base::InitializeImpl() cannot distinguish between discrete and integrated GPUs, so we need to
    // overwrite it here.
    if (mAdapterType == wgpu::AdapterType::DiscreteGPU && mDeviceInfo.isUMA) {
        mAdapterType = wgpu::AdapterType::IntegratedGPU;
    }

    if (GetInstance()->IsAdapterBlocklistEnabled()) {
#if DAWN_PLATFORM_IS(I386)
        DAWN_INVALID_IF(
            mDeviceInfo.shaderModel >= 60,
            "D3D12 x86 SM6.0+ adapter is blocklisted. See https://crbug.com/tint/1753.");

        DAWN_INVALID_IF(
            gpu_info::IsNvidia(mVendorId),
            "D3D12 NVIDIA x86 adapter is blocklisted. See https://crbug.com/dawn/1196.");
#elif DAWN_PLATFORM_IS(ARM)
        return DAWN_VALIDATION_ERROR(
            "D3D12 on ARM CPU is blocklisted. See https://crbug.com/dawn/884.");
#endif
    }
    return {};
}

bool PhysicalDevice::AreTimestampQueriesSupported() const {
    D3D12_COMMAND_QUEUE_DESC queueDesc = {};
    queueDesc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
    queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
    ComPtr<ID3D12CommandQueue> d3d12CommandQueue;
    HRESULT hr = mD3d12Device->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&d3d12CommandQueue));
    if (FAILED(hr)) {
        return false;
    }

    // GetTimestampFrequency returns an error HRESULT when there are bugs in Windows container
    // and vGPU implementations.
    uint64_t timeStampFrequency;
    hr = d3d12CommandQueue->GetTimestampFrequency(&timeStampFrequency);
    if (FAILED(hr)) {
        return false;
    }

    return true;
}

void PhysicalDevice::InitializeSupportedFeaturesImpl() {
    EnableFeature(Feature::TextureCompressionBC);
    EnableFeature(Feature::MultiPlanarFormats);
    EnableFeature(Feature::Depth32FloatStencil8);
    EnableFeature(Feature::IndirectFirstInstance);
    EnableFeature(Feature::RG11B10UfloatRenderable);
    EnableFeature(Feature::DepthClipControl);
    EnableFeature(Feature::SurfaceCapabilities);
    EnableFeature(Feature::Float32Filterable);

    if (AreTimestampQueriesSupported()) {
        EnableFeature(Feature::TimestampQuery);
        EnableFeature(Feature::TimestampQueryInsidePasses);
    }
    EnableFeature(Feature::PipelineStatisticsQuery);

    // Both Dp4a and ShaderF16 features require DXC version being 1.4 or higher
    if (GetBackend()->IsDXCAvailableAndVersionAtLeast(1, 4, 1, 4)) {
        if (mDeviceInfo.supportsDP4a) {
            EnableFeature(Feature::ChromiumExperimentalDp4a);
        }
        if (mDeviceInfo.supportsShaderF16) {
            EnableFeature(Feature::ShaderF16);
        }
    }

    D3D12_FEATURE_DATA_FORMAT_SUPPORT bgra8unormFormatInfo = {};
    bgra8unormFormatInfo.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
    HRESULT hr = mD3d12Device->CheckFeatureSupport(
        D3D12_FEATURE_FORMAT_SUPPORT, &bgra8unormFormatInfo, sizeof(bgra8unormFormatInfo));
    if (SUCCEEDED(hr) &&
        (bgra8unormFormatInfo.Support1 & D3D12_FORMAT_SUPPORT1_TYPED_UNORDERED_ACCESS_VIEW)) {
        EnableFeature(Feature::BGRA8UnormStorage);
    }
}

MaybeError PhysicalDevice::InitializeSupportedLimitsImpl(CombinedLimits* limits) {
    D3D12_FEATURE_DATA_D3D12_OPTIONS featureData = {};

    DAWN_TRY(CheckHRESULT(mD3d12Device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS,
                                                            &featureData, sizeof(featureData)),
                          "CheckFeatureSupport D3D12_FEATURE_D3D12_OPTIONS"));

    // Check if the device is at least D3D_FEATURE_LEVEL_11_1 or D3D_FEATURE_LEVEL_11_0
    const D3D_FEATURE_LEVEL levelsToQuery[]{D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL_11_0};

    D3D12_FEATURE_DATA_FEATURE_LEVELS featureLevels;
    featureLevels.NumFeatureLevels = sizeof(levelsToQuery) / sizeof(D3D_FEATURE_LEVEL);
    featureLevels.pFeatureLevelsRequested = levelsToQuery;
    DAWN_TRY(CheckHRESULT(mD3d12Device->CheckFeatureSupport(D3D12_FEATURE_FEATURE_LEVELS,
                                                            &featureLevels, sizeof(featureLevels)),
                          "CheckFeatureSupport D3D12_FEATURE_FEATURE_LEVELS"));

    if (featureLevels.MaxSupportedFeatureLevel == D3D_FEATURE_LEVEL_11_0 &&
        featureData.ResourceBindingTier < D3D12_RESOURCE_BINDING_TIER_2) {
        return DAWN_VALIDATION_ERROR(
            "At least Resource Binding Tier 2 is required for D3D12 Feature Level 11.0 "
            "devices.");
    }

    GetDefaultLimits(&limits->v1);

    // https://docs.microsoft.com/en-us/windows/win32/direct3d12/hardware-feature-levels

    // Limits that are the same across D3D feature levels
    limits->v1.maxTextureDimension1D = D3D12_REQ_TEXTURE1D_U_DIMENSION;
    limits->v1.maxTextureDimension2D = D3D12_REQ_TEXTURE2D_U_OR_V_DIMENSION;
    limits->v1.maxTextureDimension3D = D3D12_REQ_TEXTURE3D_U_V_OR_W_DIMENSION;
    limits->v1.maxTextureArrayLayers = D3D12_REQ_TEXTURE2D_ARRAY_AXIS_DIMENSION;
    // Slot values can be 0-15, inclusive:
    // https://docs.microsoft.com/en-ca/windows/win32/api/d3d12/ns-d3d12-d3d12_input_element_desc
    limits->v1.maxVertexBuffers = 16;
    limits->v1.maxVertexAttributes = D3D12_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT;

    // Note: WebGPU requires FL11.1+
    // https://docs.microsoft.com/en-us/windows/win32/direct3d12/hardware-support
    // Resource Binding Tier:   1      2      3

    // Max(CBV+UAV+SRV)         1M    1M    1M+
    // Max CBV per stage        14    14   full
    // Max SRV per stage       128  full   full
    // Max UAV in all stages    64    64   full
    // Max Samplers per stage   16  2048   2048

    // https://docs.microsoft.com/en-us/windows-hardware/test/hlk/testref/efad06e8-51d1-40ce-ad5c-573a134b4bb6
    // "full" means the full heap can be used. This is tested
    // to work for 1 million descriptors, and 1.1M for tier 3.
    uint32_t maxCBVsPerStage;
    uint32_t maxSRVsPerStage;
    uint32_t maxUAVsAllStages;
    uint32_t maxSamplersPerStage;
    switch (featureData.ResourceBindingTier) {
        case D3D12_RESOURCE_BINDING_TIER_1:
            maxCBVsPerStage = 14;
            maxSRVsPerStage = 128;
            maxUAVsAllStages = 64;
            maxSamplersPerStage = 16;
            break;
        case D3D12_RESOURCE_BINDING_TIER_2:
            maxCBVsPerStage = 14;
            maxSRVsPerStage = 1'000'000;
            maxUAVsAllStages = 64;
            maxSamplersPerStage = 2048;
            break;
        case D3D12_RESOURCE_BINDING_TIER_3:
        default:
            maxCBVsPerStage = 1'100'000;
            maxSRVsPerStage = 1'100'000;
            maxUAVsAllStages = 1'100'000;
            maxSamplersPerStage = 2048;
            break;
    }

    ASSERT(maxUAVsAllStages / 4 > limits->v1.maxStorageTexturesPerShaderStage);
    ASSERT(maxUAVsAllStages / 4 > limits->v1.maxStorageBuffersPerShaderStage);
    uint32_t maxUAVsPerStage = maxUAVsAllStages / 2;

    limits->v1.maxUniformBuffersPerShaderStage = maxCBVsPerStage;
    // Allocate half of the UAVs to storage buffers, and half to storage textures.
    limits->v1.maxStorageTexturesPerShaderStage = maxUAVsPerStage / 2;
    limits->v1.maxStorageBuffersPerShaderStage = maxUAVsPerStage - maxUAVsPerStage / 2;
    limits->v1.maxSampledTexturesPerShaderStage = maxSRVsPerStage;
    limits->v1.maxSamplersPerShaderStage = maxSamplersPerStage;

    limits->v1.maxColorAttachments = D3D12_SIMULTANEOUS_RENDER_TARGET_COUNT;

    // https://docs.microsoft.com/en-us/windows/win32/direct3d12/root-signature-limits
    // In DWORDS. Descriptor tables cost 1, Root constants cost 1, Root descriptors cost 2.
    static constexpr uint32_t kMaxRootSignatureSize = 64u;
    // Dawn maps WebGPU's binding model by:
    //  - (maxBindGroups)
    //    CBVs/UAVs/SRVs for bind group are a root descriptor table
    //  - (maxBindGroups)
    //    Samplers for each bind group are a root descriptor table
    //  - dynamic uniform buffers - root descriptor
    //  - dynamic storage buffers - root descriptor plus a root constant for the size
    //  RESERVED:
    //  - 3 = max of:
    //    - 2 root constants for the baseVertex/baseInstance constants.
    //    - 3 root constants for num workgroups X, Y, Z
    static constexpr uint32_t kReservedSlots = 3;

    // Costs:
    //  - bind group: 2 = 1 cbv/uav/srv table + 1 sampler table
    //  - dynamic uniform buffer: 2 slots for a root descriptor
    //  - dynamic storage buffer: 3 slots for a root descriptor + root constant

    // Available slots after base limits considered.
    uint32_t availableRootSignatureSlots =
        kMaxRootSignatureSize - kReservedSlots - 2 * limits->v1.maxBindGroups -
        2 * limits->v1.maxDynamicUniformBuffersPerPipelineLayout -
        3 * limits->v1.maxDynamicStorageBuffersPerPipelineLayout;

    while (availableRootSignatureSlots >= 2) {
        // Start by incrementing maxDynamicStorageBuffersPerPipelineLayout since the
        // default is just 4 and developers likely want more. This scheme currently
        // gets us to 8.
        if (availableRootSignatureSlots >= 3) {
            limits->v1.maxDynamicStorageBuffersPerPipelineLayout += 1;
            availableRootSignatureSlots -= 3;
        }
        if (availableRootSignatureSlots >= 2) {
            limits->v1.maxBindGroups += 1;
            availableRootSignatureSlots -= 2;
        }
        if (availableRootSignatureSlots >= 2) {
            limits->v1.maxDynamicUniformBuffersPerPipelineLayout += 1;
            availableRootSignatureSlots -= 2;
        }
    }

    ASSERT(2 * limits->v1.maxBindGroups + 2 * limits->v1.maxDynamicUniformBuffersPerPipelineLayout +
               3 * limits->v1.maxDynamicStorageBuffersPerPipelineLayout <=
           kMaxRootSignatureSize - kReservedSlots);

    // https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/sm5-attributes-numthreads
    limits->v1.maxComputeWorkgroupSizeX = D3D12_CS_THREAD_GROUP_MAX_X;
    limits->v1.maxComputeWorkgroupSizeY = D3D12_CS_THREAD_GROUP_MAX_Y;
    limits->v1.maxComputeWorkgroupSizeZ = D3D12_CS_THREAD_GROUP_MAX_Z;
    limits->v1.maxComputeInvocationsPerWorkgroup = D3D12_CS_THREAD_GROUP_MAX_THREADS_PER_GROUP;

    // https://docs.microsoft.com/en-us/windows/win32/api/d3d12/ns-d3d12-d3d12_dispatch_arguments
    limits->v1.maxComputeWorkgroupsPerDimension = D3D12_CS_DISPATCH_MAX_THREAD_GROUPS_PER_DIMENSION;

    // https://docs.microsoft.com/en-us/windows/win32/direct3d11/overviews-direct3d-11-devices-downlevel-compute-shaders
    // Thread Group Shared Memory is limited to 16Kb on downlevel hardware. This is less than
    // the 32Kb that is available to Direct3D 11 hardware. D3D12 is also 32kb.
    limits->v1.maxComputeWorkgroupStorageSize = 32768;

    // Max number of "constants" where each constant is a 16-byte float4
    limits->v1.maxUniformBufferBindingSize = D3D12_REQ_CONSTANT_BUFFER_ELEMENT_COUNT * 16;

    if (gpu_info::IsQualcomm(GetVendorId())) {
        // limit of number of texels in a buffer == (1 << 27)
        // D3D12_REQ_BUFFER_RESOURCE_TEXEL_COUNT_2_TO_EXP
        // This limit doesn't apply to a raw buffer, but only applies to
        // typed, or structured buffer. so this could be a QC driver bug.
        limits->v1.maxStorageBufferBindingSize = uint64_t(1)
                                                 << D3D12_REQ_BUFFER_RESOURCE_TEXEL_COUNT_2_TO_EXP;
    } else {
        limits->v1.maxStorageBufferBindingSize = kAssumedMaxBufferSize;
    }

    // D3D12 has no documented limit on the buffer size.
    limits->v1.maxBufferSize = kAssumedMaxBufferSize;

    // Using base limits for:
    // TODO(crbug.com/dawn/685):
    // - maxInterStageShaderComponents
    // - maxVertexBufferArrayStride

    // TODO(crbug.com/dawn/1448):
    // - maxInterStageShaderVariables

    return {};
}

MaybeError PhysicalDevice::ValidateFeatureSupportedWithTogglesImpl(
    wgpu::FeatureName feature,
    const TogglesState& toggles) const {
    // shader-f16 feature and chromium-experimental-dp4a feature require DXC 1.4 or higher for
    // D3D12. Note that DXC version is checked in InitializeSupportedFeaturesImpl.
    if (feature == wgpu::FeatureName::ShaderF16 ||
        feature == wgpu::FeatureName::ChromiumExperimentalDp4a) {
        DAWN_INVALID_IF(!toggles.IsEnabled(Toggle::UseDXC), "Feature %s requires DXC for D3D12.",
                        GetInstance()->GetFeatureInfo(feature)->name);
    }
    return {};
}

MaybeError PhysicalDevice::InitializeDebugLayerFilters() {
    if (!GetInstance()->IsBackendValidationEnabled()) {
        return {};
    }

    D3D12_MESSAGE_ID denyIds[] = {
        //
        // Permanent IDs: list of warnings that are not applicable
        //

        // Resource sub-allocation partially maps pre-allocated heaps. This means the
        // entire physical addresses space may have no resources or have many resources
        // assigned the same heap.
        D3D12_MESSAGE_ID_HEAP_ADDRESS_RANGE_HAS_NO_RESOURCE,
        D3D12_MESSAGE_ID_HEAP_ADDRESS_RANGE_INTERSECTS_MULTIPLE_BUFFERS,

        // The debug layer validates pipeline objects when they are created. Dawn validates
        // them when them when they are set. Therefore, since the issue is caught at a later
        // time, we can silence this warnings.
        D3D12_MESSAGE_ID_CREATEGRAPHICSPIPELINESTATE_RENDERTARGETVIEW_NOT_SET,

        // Adding a clear color during resource creation would require heuristics or delayed
        // creation.
        // https://crbug.com/dawn/418
        D3D12_MESSAGE_ID_CLEARRENDERTARGETVIEW_MISMATCHINGCLEARVALUE,
        D3D12_MESSAGE_ID_CLEARDEPTHSTENCILVIEW_MISMATCHINGCLEARVALUE,

        // Dawn enforces proper Unmaps at a later time.
        // https://crbug.com/dawn/422
        D3D12_MESSAGE_ID_EXECUTECOMMANDLISTS_GPU_WRITTEN_READBACK_RESOURCE_MAPPED,

        // WebGPU allows empty scissors without empty viewports.
        D3D12_MESSAGE_ID_DRAW_EMPTY_SCISSOR_RECTANGLE,

        //
        // Temporary IDs: list of warnings that should be fixed or promoted
        //

        // Remove after warning have been addressed
        // https://crbug.com/dawn/421
        D3D12_MESSAGE_ID_GPU_BASED_VALIDATION_INCOMPATIBLE_RESOURCE_STATE,

        // For small placed resource alignment, we first request the small alignment, which may
        // get rejected and generate a debug error. Then, we request 0 to get the allowed
        // allowed alignment.
        D3D12_MESSAGE_ID_CREATERESOURCE_INVALIDALIGNMENT,

        // WebGPU allows OOB vertex buffer access and relies on D3D12's robust buffer access
        // behavior.
        D3D12_MESSAGE_ID_COMMAND_LIST_DRAW_VERTEX_BUFFER_TOO_SMALL,

        // WebGPU allows setVertexBuffer with offset that equals to the whole vertex buffer
        // size.
        // Even this means that no vertex buffer view has been set in D3D12 backend.
        // https://crbug.com/dawn/1255
        D3D12_MESSAGE_ID_COMMAND_LIST_DRAW_VERTEX_BUFFER_NOT_SET,

        // When using f16 in vertex attributes the debug layer may report float16_t as type
        // `unknown`, resulting in a CREATEINPUTLAYOUT_TYPE_MISMATCH warning.
        // https://crbug.com/tint/1473
        D3D12_MESSAGE_ID_CREATEINPUTLAYOUT_TYPE_MISMATCH,
    };

    // Create a retrieval filter with a deny list to suppress messages.
    // Any messages remaining will be converted to Dawn errors.
    D3D12_INFO_QUEUE_FILTER filter{};
    // Filter out info/message and only create errors from warnings or worse.
    D3D12_MESSAGE_SEVERITY severities[] = {
        D3D12_MESSAGE_SEVERITY_INFO,
        D3D12_MESSAGE_SEVERITY_MESSAGE,
    };
    filter.DenyList.NumSeverities = ARRAYSIZE(severities);
    filter.DenyList.pSeverityList = severities;
    filter.DenyList.NumIDs = ARRAYSIZE(denyIds);
    filter.DenyList.pIDList = denyIds;

    ComPtr<ID3D12InfoQueue> infoQueue;
    DAWN_TRY(CheckHRESULT(mD3d12Device.As(&infoQueue),
                          "D3D12 QueryInterface ID3D12Device to ID3D12InfoQueue"));

    // To avoid flooding the console, a storage-filter is also used to
    // prevent messages from getting logged.
    DAWN_TRY(
        CheckHRESULT(infoQueue->PushStorageFilter(&filter), "ID3D12InfoQueue::PushStorageFilter"));

    DAWN_TRY(CheckHRESULT(infoQueue->PushRetrievalFilter(&filter),
                          "ID3D12InfoQueue::PushRetrievalFilter"));

    return {};
}

void PhysicalDevice::CleanUpDebugLayerFilters() {
    if (!GetInstance()->IsBackendValidationEnabled()) {
        return;
    }

    // The device may not exist if this adapter failed to initialize.
    if (mD3d12Device == nullptr) {
        return;
    }

    // If the debug layer is not installed, return immediately to avoid crashing the process.
    ComPtr<ID3D12InfoQueue> infoQueue;
    if (FAILED(mD3d12Device.As(&infoQueue))) {
        return;
    }

    infoQueue->PopRetrievalFilter();
    infoQueue->PopStorageFilter();
}

void PhysicalDevice::SetupBackendAdapterToggles(TogglesState* adapterToggles) const {
    // Check for use_dxc toggle
#ifdef DAWN_USE_BUILT_DXC
    // Default to using DXC. If shader model < 6.0, though, we must use FXC.
    if (GetDeviceInfo().shaderModel <= 60) {
        adapterToggles->ForceSet(Toggle::UseDXC, false);
    }
    adapterToggles->Default(Toggle::UseDXC, true);
#else
    // Default to using FXC
    if (!GetBackend()->IsDXCAvailable()) {
        adapterToggles->ForceSet(Toggle::UseDXC, false);
    }
    adapterToggles->Default(Toggle::UseDXC, false);
#endif
}

void PhysicalDevice::SetupBackendDeviceToggles(TogglesState* deviceToggles) const {
    const bool useResourceHeapTier2 = (GetDeviceInfo().resourceHeapTier >= 2);
    deviceToggles->Default(Toggle::UseD3D12ResourceHeapTier2, useResourceHeapTier2);
    deviceToggles->Default(Toggle::UseD3D12RenderPass, GetDeviceInfo().supportsRenderPass);
    deviceToggles->Default(Toggle::UseD3D12ResidencyManagement, true);
    deviceToggles->Default(Toggle::D3D12AlwaysUseTypelessFormatsForCastableTexture,
                           !GetDeviceInfo().supportsCastingFullyTypedFormat);
    deviceToggles->Default(Toggle::ApplyClearBigIntegerColorValueWithDraw, true);

    // The restriction on the source box specifying a portion of the depth stencil texture in
    // CopyTextureRegion() is only available on the D3D12 platforms which doesn't support
    // programmable sample positions.
    deviceToggles->Default(
        Toggle::D3D12UseTempBufferInDepthStencilTextureAndBufferCopyWithNonZeroBufferOffset,
        GetDeviceInfo().programmableSamplePositionsTier == 0);

    // Disable optimizations when using FXC
    // See https://crbug.com/dawn/1203
    deviceToggles->Default(Toggle::FxcOptimizations, false);

    // By default use the maximum shader-visible heap size allowed.
    deviceToggles->Default(Toggle::UseD3D12SmallShaderVisibleHeapForTesting, false);

    // By default use D3D12 Root Signature Version 1.1 when possible, otherwise we should never
    // enable this toggle.
    if (!GetDeviceInfo().supportsRootSignatureVersion1_1) {
        deviceToggles->ForceSet(Toggle::D3D12UseRootSignatureVersion1_1, false);
    }
    deviceToggles->Default(Toggle::D3D12UseRootSignatureVersion1_1,
                           GetDeviceInfo().supportsRootSignatureVersion1_1);

    // By default create MSAA textures with 64KB (D3D12_SMALL_MSAA_RESOURCE_PLACEMENT_ALIGNMENT)
    // alignment when possible, otherwise we should never enable this toggle.
    if (!GetDeviceInfo().use64KBAlignedMSAATexture) {
        deviceToggles->ForceSet(Toggle::D3D12Use64KBAlignedMSAATexture, false);
    }
    deviceToggles->Default(Toggle::D3D12Use64KBAlignedMSAATexture,
                           GetDeviceInfo().use64KBAlignedMSAATexture);

    uint32_t deviceId = GetDeviceId();
    uint32_t vendorId = GetVendorId();

    // Currently this workaround is only needed on Intel Gen9, Gen9.5 and Gen11 GPUs.
    // See http://crbug.com/1161355 for more information.
    if (gpu_info::IsIntelGen9(vendorId, deviceId) || gpu_info::IsIntelGen11(vendorId, deviceId)) {
        const gpu_info::DriverVersion kFixedDriverVersion = {31, 0, 101, 2114};
        if (gpu_info::CompareWindowsDriverVersion(vendorId, GetDriverVersion(),
                                                  kFixedDriverVersion) < 0) {
            deviceToggles->Default(
                Toggle::UseTempBufferInSmallFormatTextureToTextureCopyFromGreaterToLessMipLevel,
                true);
        }
    }

    // Currently this workaround is only needed on Intel Gen9, Gen9.5 and Gen12 GPUs.
    // See http://crbug.com/dawn/1487 for more information.
    if (gpu_info::IsIntelGen9(vendorId, deviceId) || gpu_info::IsIntelGen12LP(vendorId, deviceId) ||
        gpu_info::IsIntelGen12HP(vendorId, deviceId)) {
        deviceToggles->Default(Toggle::D3D12ForceClearCopyableDepthStencilTextureOnCreation, true);
    }

    // Currently this workaround is only needed on Intel Gen12 GPUs.
    // See http://crbug.com/dawn/1487 for more information.
    if (gpu_info::IsIntelGen12LP(vendorId, deviceId) ||
        gpu_info::IsIntelGen12HP(vendorId, deviceId)) {
        deviceToggles->Default(Toggle::D3D12DontSetClearValueOnDepthTextureCreation, true);
    }

    // Currently this workaround is needed on any D3D12 backend for some particular situations.
    // But we may need to limit it if D3D12 runtime fixes the bug on its new release. See
    // https://crbug.com/dawn/1289 for more information.
    // TODO(dawn:1289): Unset this toggle when we skip the split on the buffer-texture copy
    // on the platforms where UnrestrictedBufferTextureCopyPitchSupported is true.
    deviceToggles->Default(Toggle::D3D12SplitBufferTextureCopyForRowsPerImagePaddings, true);

    // This workaround is only needed on Intel Gen12LP with driver prior to 30.0.101.1692.
    // See http://crbug.com/dawn/949 for more information.
    if (gpu_info::IsIntelGen12LP(vendorId, deviceId)) {
        const gpu_info::DriverVersion kFixedDriverVersion = {30, 0, 101, 1692};
        if (gpu_info::CompareWindowsDriverVersion(vendorId, GetDriverVersion(),
                                                  kFixedDriverVersion) == -1) {
            deviceToggles->Default(Toggle::D3D12AllocateExtraMemoryFor2DArrayColorTexture, true);
        }
    }

    // This workaround is needed on Intel Gen9 GPUs with driver >= 31.0.101.2121 and Gen12LP GPUs
    // with driver >= 31.0.101.4091. See http://crbug.com/dawn/1083 for more information.
    bool useBlitForT2T = false;
    if (gpu_info::IsIntelGen9(vendorId, deviceId)) {
        useBlitForT2T = gpu_info::CompareWindowsDriverVersion(vendorId, GetDriverVersion(),
                                                              {31, 0, 101, 2121}) != -1;
    } else if (gpu_info::IsIntelGen12LP(vendorId, deviceId)) {
        useBlitForT2T = gpu_info::CompareWindowsDriverVersion(vendorId, GetDriverVersion(),
                                                              {31, 0, 101, 4091}) != -1;
    }
    if (useBlitForT2T) {
        deviceToggles->Default(Toggle::UseBlitForDepthTextureToTextureCopyToNonzeroSubresource,
                               true);
    }

    // D3D driver has a bug resolving overlapping queries to a same buffer on Intel Gen12 GPUs. This
    // workaround is needed on the driver version >= 30.0.101.3413.
    // TODO(crbug.com/dawn/1546): Remove the workaround when the bug is fixed in D3D driver.
    if (gpu_info::IsIntelGen12LP(vendorId, deviceId) ||
        gpu_info::IsIntelGen12HP(vendorId, deviceId)) {
        const gpu_info::DriverVersion kDriverVersion = {30, 0, 101, 3413};
        if (gpu_info::CompareWindowsDriverVersion(vendorId, GetDriverVersion(), kDriverVersion) !=
            -1) {
            deviceToggles->Default(Toggle::ClearBufferBeforeResolveQueries, true);
        }
    }

    // Currently these workarounds are only needed on Intel Gen9.5 and Gen11 GPUs.
    // See http://crbug.com/1237175 and http://crbug.com/dawn/1628 for more information.
    if ((gpu_info::IsIntelGen9(vendorId, deviceId) && !gpu_info::IsSkylake(deviceId)) ||
        gpu_info::IsIntelGen11(vendorId, deviceId)) {
        deviceToggles->Default(
            Toggle::DisableSubAllocationFor2DTextureWithCopyDstOrRenderAttachment, true);
        // Now we don't need to force clearing depth stencil textures with CopyDst as all the depth
        // stencil textures (can only be 2D textures) will be created with CreateCommittedResource()
        // instead of CreatePlacedResource().
        deviceToggles->Default(Toggle::D3D12ForceClearCopyableDepthStencilTextureOnCreation, false);
    }

    // Currently this toggle is only needed on Intel Gen9 and Gen9.5 GPUs.
    // See http://crbug.com/dawn/1579 for more information.
    if (gpu_info::IsIntelGen9(vendorId, deviceId)) {
        const gpu_info::DriverVersion kFixedDriverVersion = {31, 0, 101, 2121};
        if (gpu_info::CompareWindowsDriverVersion(vendorId, GetDriverVersion(),
                                                  kFixedDriverVersion) < 0) {
            // We can add workaround when the blending operation is "Add", DstFactor is "Zero" and
            // SrcFactor is "DstAlpha".
            deviceToggles->ForceSet(
                Toggle::D3D12ReplaceAddWithMinusWhenDstFactorIsZeroAndSrcFactorIsDstAlpha, true);

            // Unfortunately we cannot add workaround for other cases.
            deviceToggles->ForceSet(
                Toggle::NoWorkaroundDstAlphaAsSrcBlendFactorForBothColorAndAlphaDoesNotWork, true);
        }
    }

#if D3D12_SDK_VERSION >= 602
    D3D12_FEATURE_DATA_D3D12_OPTIONS13 featureData13;
    if (FAILED(mD3d12Device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS13, &featureData13,
                                                 sizeof(featureData13)))) {
        // If the platform doesn't support D3D12_FEATURE_D3D12_OPTIONS13, default initialize the
        // struct to set all features to false.
        featureData13 = {};
    }
    if (!featureData13.TextureCopyBetweenDimensionsSupported)
#endif
    {
        deviceToggles->ForceSet(
            Toggle::D3D12UseTempBufferInTextureToTextureCopyBetweenDifferentDimensions, true);
    }

    // Polyfill reflect builtin for vec2<f32> on Intel device if using FXC.
    // See https://crbug.com/tint/1798 for more information.
    if (gpu_info::IsIntel(vendorId) && !deviceToggles->IsEnabled(Toggle::UseDXC)) {
        deviceToggles->Default(Toggle::D3D12PolyfillReflectVec2F32, true);
    }
}

ResultOrError<Ref<DeviceBase>> PhysicalDevice::CreateDeviceImpl(AdapterBase* adapter,
                                                                const DeviceDescriptor* descriptor,
                                                                const TogglesState& deviceToggles) {
    return Device::Create(adapter, descriptor, deviceToggles);
}

// Resets the backend device and creates a new one. If any D3D12 objects belonging to the
// current ID3D12Device have not been destroyed, a non-zero value will be returned upon Reset()
// and the subequent call to CreateDevice will return a handle the existing device instead of
// creating a new one.
MaybeError PhysicalDevice::ResetInternalDeviceForTestingImpl() {
    [[maybe_unused]] auto refCount = mD3d12Device.Reset();
    ASSERT(refCount == 0);
    DAWN_TRY(Initialize());

    return {};
}

}  // namespace dawn::native::d3d12