src/dawn/native/d3d11/DeviceInfoD3D11.cpp

// Copyright 2023 The Dawn & Tint Authors
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#include "dawn/native/d3d11/DeviceInfoD3D11.h"

#include <utility>

#include "dawn/native/d3d/D3DError.h"
#include "dawn/native/d3d11/PlatformFunctionsD3D11.h"

namespace dawn::native::d3d11 {

ResultOrError<DeviceInfo> GatherDeviceInfo(const ComPtr<IDXGIAdapter3>& adapter,
                                           const ComPtr<ID3D11Device>& device) {
    DeviceInfo info = {};

    D3D11_FEATURE_DATA_D3D11_OPTIONS options;
    DAWN_TRY(CheckHRESULT(
        device->CheckFeatureSupport(D3D11_FEATURE_D3D11_OPTIONS, &options, sizeof(options)),
        "D3D11_FEATURE_D3D11_OPTIONS"));
    info.supportsMapNoOverwriteDynamicBuffers =
        options.MapNoOverwriteOnDynamicBufferSRV && options.MapNoOverwriteOnDynamicConstantBuffer;

    info.supportsPartialConstantBufferUpdate = options.ConstantBufferPartialUpdate;

    // TODO(405401229): Return error if the device doesn't support binding constant buffers with
    // non-zero offsets.
    DAWN_INVALID_IF(!options.ConstantBufferOffsetting, "ConstantBufferOffsetting is not supported");

    D3D11_FEATURE_DATA_D3D11_OPTIONS2 options2;
    DAWN_TRY(CheckHRESULT(
        device->CheckFeatureSupport(D3D11_FEATURE_D3D11_OPTIONS2, &options2, sizeof(options2)),
        "D3D11_FEATURE_D3D11_OPTIONS2"));

    info.isUMA = options2.UnifiedMemoryArchitecture;
    info.supportsROV = options2.ROVsSupported;

    info.shaderModel = 50;
    // Profiles are always <stage>s_<minor>_<major> so we build the s_<minor>_major and add
    // it to each of the stage's suffix.
    info.shaderProfiles[SingleShaderStage::Vertex] = L"vs_5_0";
    info.shaderProfiles[SingleShaderStage::Fragment] = L"ps_5_0";
    info.shaderProfiles[SingleShaderStage::Compute] = L"cs_5_0";

    // Runtime of the created texture (D3D11 device) and OpenSharedHandle runtime (Dawn's
    // D3D12 device) must agree on resource sharing capability. For NV12 formats, D3D11
    // requires at-least D3D11_SHARED_RESOURCE_TIER_2 support.
    // https://docs.microsoft.com/en-us/windows/win32/api/d3d11/ne-d3d11-d3d11_shared_resource_tier
    D3D11_FEATURE_DATA_D3D11_OPTIONS5 featureOptions5{};
    if (SUCCEEDED(device->CheckFeatureSupport(D3D11_FEATURE_D3D11_OPTIONS5, &featureOptions5,
                                              sizeof(featureOptions5)))) {
        info.supportsSharedResourceCapabilityTier2 =
            featureOptions5.SharedResourceTier >= D3D11_SHARED_RESOURCE_TIER_2;
    } else {
        info.supportsSharedResourceCapabilityTier2 = false;
    }

    DXGI_ADAPTER_DESC2 adapterDesc2;
    DAWN_TRY(CheckHRESULT(adapter->GetDesc2(&adapterDesc2), "IDXGIAdapter2::GetDesc2()"));
    info.dedicatedVideoMemory = adapterDesc2.DedicatedVideoMemory;
    info.sharedSystemMemory = adapterDesc2.SharedSystemMemory;

    // IDXGIAdapter4 is only available since Win 10 Creators Update.
    ComPtr<IDXGIAdapter4> adapter4;
    if (SUCCEEDED(adapter.As(&adapter4))) {
        DXGI_ADAPTER_DESC3 adapterDesc3;
        DAWN_TRY(CheckHRESULT(adapter4->GetDesc3(&adapterDesc3), "IDXGIAdapter4::GetDesc3()"));
        info.supportsMonitoredFence =
            adapterDesc3.Flags & DXGI_ADAPTER_FLAG3_SUPPORT_MONITORED_FENCES;
        info.supportsNonMonitoredFence =
            adapterDesc3.Flags & DXGI_ADAPTER_FLAG3_SUPPORT_NON_MONITORED_FENCES;
    }

    return std::move(info);
}

}  // namespace dawn::native::d3d11