dawn-cmake/include/dawn/native/D3D12Backend.h

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C++

// 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.
#ifndef INCLUDE_DAWN_NATIVE_D3D12BACKEND_H_
#define INCLUDE_DAWN_NATIVE_D3D12BACKEND_H_
#include <DXGI1_4.h>
#include <d3d12.h>
#include <windows.h>
#include <wrl/client.h>
#include <memory>
#include <vector>
#include "dawn/native/D3DBackend.h"
struct ID3D12Device;
struct ID3D12Resource;
namespace dawn::native::d3d12 {
class Device;
class ExternalImageDXGIImpl;
DAWN_NATIVE_EXPORT Microsoft::WRL::ComPtr<ID3D12Device> GetD3D12Device(WGPUDevice device);
enum MemorySegment {
Local,
NonLocal,
};
DAWN_NATIVE_EXPORT uint64_t SetExternalMemoryReservation(WGPUDevice device,
uint64_t requestedReservationSize,
MemorySegment memorySegment);
struct DAWN_NATIVE_EXPORT ExternalImageDescriptorDXGISharedHandle : ExternalImageDescriptor {
public:
ExternalImageDescriptorDXGISharedHandle();
// Note: SharedHandle must be a handle to a texture object.
HANDLE sharedHandle = nullptr;
// Deprecated: Fence synchronization is always used after keyed mutex support was removed.
// TODO(dawn:1612): Remove once Chromium stops setting this.
bool useFenceSynchronization = false;
};
struct DAWN_NATIVE_EXPORT ExternalImageDXGIFenceDescriptor {
// Shared handle for the fence. This never passes ownership to the callee (when used as an input
// parameter) or to the caller (when used as a return value or output parameter).
HANDLE fenceHandle = nullptr;
// The value that was previously signaled on this fence and should be waited on.
uint64_t fenceValue = 0;
};
struct DAWN_NATIVE_EXPORT ExternalImageDXGIBeginAccessDescriptor {
bool isInitialized = false; // Whether the texture is initialized on import
WGPUTextureUsageFlags usage = WGPUTextureUsage_None;
// A list of fences to wait on before accessing the texture.
std::vector<ExternalImageDXGIFenceDescriptor> waitFences;
// Whether the texture is for a WebGPU swap chain.
bool isSwapChainTexture = false;
};
class DAWN_NATIVE_EXPORT ExternalImageDXGI {
public:
~ExternalImageDXGI();
static std::unique_ptr<ExternalImageDXGI> Create(
WGPUDevice device,
const ExternalImageDescriptorDXGISharedHandle* descriptor);
// Returns true if the external image resources are still valid, otherwise BeginAccess() is
// guaranteed to fail e.g. after device destruction.
bool IsValid() const;
// Creates WGPUTexture wrapping the DXGI shared handle. The provided wait fences will be
// synchronized before using the texture in any command lists. Empty fences (nullptr handle) are
// ignored for convenience (EndAccess can return such fences).
WGPUTexture BeginAccess(const ExternalImageDXGIBeginAccessDescriptor* descriptor);
// Returns the signalFence that the client must wait on for correct synchronization. Can return
// an empty fence (nullptr handle) if the texture wasn't accessed by Dawn.
// Note that merely calling Destroy() on the WGPUTexture does not ensure synchronization.
void EndAccess(WGPUTexture texture, ExternalImageDXGIFenceDescriptor* signalFence);
private:
explicit ExternalImageDXGI(std::unique_ptr<ExternalImageDXGIImpl> impl);
std::unique_ptr<ExternalImageDXGIImpl> mImpl;
};
struct DAWN_NATIVE_EXPORT AdapterDiscoveryOptions : public d3d::AdapterDiscoveryOptions {
AdapterDiscoveryOptions();
explicit AdapterDiscoveryOptions(Microsoft::WRL::ComPtr<IDXGIAdapter> adapter);
};
} // namespace dawn::native::d3d12
#endif // INCLUDE_DAWN_NATIVE_D3D12BACKEND_H_