102 lines
3.7 KiB
C++
102 lines
3.7 KiB
C++
// Copyright 2023 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef INCLUDE_DAWN_NATIVE_D3DBACKEND_H_
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#define INCLUDE_DAWN_NATIVE_D3DBACKEND_H_
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#include <dxgi1_4.h>
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#include <windows.h>
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#include <wrl/client.h>
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#include <memory>
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#include <vector>
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#include "dawn/native/DawnNative.h"
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namespace dawn::native::d3d {
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class ExternalImageDXGIImpl;
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DAWN_NATIVE_EXPORT Microsoft::WRL::ComPtr<IDXGIAdapter> GetDXGIAdapter(WGPUAdapter adapter);
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struct DAWN_NATIVE_EXPORT PhysicalDeviceDiscoveryOptions
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: public PhysicalDeviceDiscoveryOptionsBase {
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PhysicalDeviceDiscoveryOptions(WGPUBackendType type,
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Microsoft::WRL::ComPtr<IDXGIAdapter> adapter);
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Microsoft::WRL::ComPtr<IDXGIAdapter> dxgiAdapter;
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};
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// TODO(dawn:1774): Deprecated.
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using AdapterDiscoveryOptions = PhysicalDeviceDiscoveryOptions;
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struct DAWN_NATIVE_EXPORT ExternalImageDescriptorDXGISharedHandle : ExternalImageDescriptor {
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public:
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ExternalImageDescriptorDXGISharedHandle();
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// Note: SharedHandle must be a handle to a texture object.
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HANDLE sharedHandle = nullptr;
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};
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struct DAWN_NATIVE_EXPORT ExternalImageDXGIFenceDescriptor {
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// Shared handle for the fence. This never passes ownership to the callee (when used as an input
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// parameter) or to the caller (when used as a return value or output parameter).
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HANDLE fenceHandle = nullptr;
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// The value that was previously signaled on this fence and should be waited on.
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uint64_t fenceValue = 0;
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};
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struct DAWN_NATIVE_EXPORT ExternalImageDXGIBeginAccessDescriptor {
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bool isInitialized = false; // Whether the texture is initialized on import
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WGPUTextureUsageFlags usage = WGPUTextureUsage_None;
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// A list of fences to wait on before accessing the texture.
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std::vector<ExternalImageDXGIFenceDescriptor> waitFences;
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// Whether the texture is for a WebGPU swap chain.
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bool isSwapChainTexture = false;
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};
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class DAWN_NATIVE_EXPORT ExternalImageDXGI {
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public:
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~ExternalImageDXGI();
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static std::unique_ptr<ExternalImageDXGI> Create(
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WGPUDevice device,
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const ExternalImageDescriptorDXGISharedHandle* descriptor);
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// Returns true if the external image resources are still valid, otherwise BeginAccess() is
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// guaranteed to fail e.g. after device destruction.
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bool IsValid() const;
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// Creates WGPUTexture wrapping the DXGI shared handle. The provided wait fences will be
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// synchronized before using the texture in any command lists. Empty fences (nullptr handle) are
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// ignored for convenience (EndAccess can return such fences).
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WGPUTexture BeginAccess(const ExternalImageDXGIBeginAccessDescriptor* descriptor);
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// Returns the signalFence that the client must wait on for correct synchronization. Can return
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// an empty fence (nullptr handle) if the texture wasn't accessed by Dawn.
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// Note that merely calling Destroy() on the WGPUTexture does not ensure synchronization.
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void EndAccess(WGPUTexture texture, ExternalImageDXGIFenceDescriptor* signalFence);
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private:
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explicit ExternalImageDXGI(std::unique_ptr<ExternalImageDXGIImpl> impl);
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std::unique_ptr<ExternalImageDXGIImpl> mImpl;
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};
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} // namespace dawn::native::d3d
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#endif // INCLUDE_DAWN_NATIVE_D3DBACKEND_H_
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