| // Copyright 2021 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 DAWNNATIVE_D3D11ON12UTIL_H_ |
| #define DAWNNATIVE_D3D11ON12UTIL_H_ |
| |
| #include "dawn/common/RefCounted.h" |
| #include "dawn/native/Error.h" |
| #include "dawn/native/d3d12/d3d12_platform.h" |
| |
| #include <dawn/native/DawnNative.h> |
| #include <memory> |
| #include <unordered_set> |
| |
| struct ID3D11On12Device; |
| struct IDXGIKeyedMutex; |
| |
| namespace dawn::native::d3d12 { |
| |
| // Wraps 11 wrapped resources in a cache. |
| class D3D11on12ResourceCacheEntry : public RefCounted { |
| public: |
| D3D11on12ResourceCacheEntry(ComPtr<ID3D11On12Device> d3d11on12Device); |
| D3D11on12ResourceCacheEntry(ComPtr<IDXGIKeyedMutex> d3d11on12Resource, |
| ComPtr<ID3D11On12Device> d3d11on12Device); |
| ~D3D11on12ResourceCacheEntry(); |
| |
| MaybeError AcquireKeyedMutex(); |
| void ReleaseKeyedMutex(); |
| |
| // Functors necessary for the |
| // unordered_set<D3D11on12ResourceCacheEntry&>-based cache. |
| struct HashFunc { |
| size_t operator()(const Ref<D3D11on12ResourceCacheEntry> a) const; |
| }; |
| |
| struct EqualityFunc { |
| bool operator()(const Ref<D3D11on12ResourceCacheEntry> a, |
| const Ref<D3D11on12ResourceCacheEntry> b) const; |
| }; |
| |
| private: |
| ComPtr<IDXGIKeyedMutex> mDXGIKeyedMutex; |
| ComPtr<ID3D11On12Device> mD3D11on12Device; |
| int64_t mAcquireCount = 0; |
| }; |
| |
| // |D3D11on12ResourceCache| maintains a cache of 11 wrapped resources. |
| // Each entry represents a 11 resource that is exclusively accessed by Dawn device. |
| // Since each Dawn device creates and stores a 11on12 device, the 11on12 device |
| // is used as the key for the cache entry which ensures only the same 11 wrapped |
| // resource is re-used and also fully released. |
| // |
| // The cache is primarily needed to avoid repeatedly calling CreateWrappedResource |
| // and special release code per ProduceTexture(device). |
| class D3D11on12ResourceCache { |
| public: |
| D3D11on12ResourceCache(); |
| ~D3D11on12ResourceCache(); |
| |
| Ref<D3D11on12ResourceCacheEntry> GetOrCreateD3D11on12Resource( |
| WGPUDevice device, |
| ID3D12Resource* d3d12Resource); |
| |
| private: |
| // TODO(dawn:625): Figure out a large enough cache size. |
| static constexpr uint64_t kMaxD3D11on12ResourceCacheSize = 5; |
| |
| // 11on12 resource cache entries are refcounted to ensure if the ExternalImage outlives the |
| // Dawn texture (or vice-versa), we always fully release the 11 wrapped resource without |
| // waiting until Dawn device to shutdown. |
| using Cache = std::unordered_set<Ref<D3D11on12ResourceCacheEntry>, |
| D3D11on12ResourceCacheEntry::HashFunc, |
| D3D11on12ResourceCacheEntry::EqualityFunc>; |
| |
| Cache mCache; |
| }; |
| |
| } // namespace dawn::native::d3d12 |
| |
| #endif // DAWNNATIVE_D3D11ON12UTIL_H_ |