| // Copyright 2017 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_D3D12_COMMANDALLOCATORMANAGER_H_ |
| #define DAWNNATIVE_D3D12_COMMANDALLOCATORMANAGER_H_ |
| |
| #include "dawn_native/d3d12/d3d12_platform.h" |
| |
| #include "common/SerialQueue.h" |
| #include "dawn_native/Error.h" |
| #include "dawn_native/IntegerTypes.h" |
| |
| #include <bitset> |
| |
| namespace dawn::native::d3d12 { |
| |
| class Device; |
| |
| class CommandAllocatorManager { |
| public: |
| CommandAllocatorManager(Device* device); |
| |
| // A CommandAllocator that is reserved must be used on the next ExecuteCommandLists |
| // otherwise its commands may be reset before execution has completed on the GPU |
| ResultOrError<ID3D12CommandAllocator*> ReserveCommandAllocator(); |
| MaybeError Tick(ExecutionSerial lastCompletedSerial); |
| |
| private: |
| Device* device; |
| |
| // This must be at least 2 because the Device and Queue use separate command allocators |
| static constexpr unsigned int kMaxCommandAllocators = 32; |
| unsigned int mAllocatorCount; |
| |
| struct IndexedCommandAllocator { |
| ComPtr<ID3D12CommandAllocator> commandAllocator; |
| unsigned int index; |
| }; |
| |
| ComPtr<ID3D12CommandAllocator> mCommandAllocators[kMaxCommandAllocators]; |
| std::bitset<kMaxCommandAllocators> mFreeAllocators; |
| SerialQueue<ExecutionSerial, IndexedCommandAllocator> mInFlightCommandAllocators; |
| }; |
| |
| } // namespace dawn::native::d3d12 |
| |
| #endif // DAWNNATIVE_D3D12_COMMANDALLOCATORMANAGER_H_ |