| // 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 SRC_DAWN_NATIVE_DYNAMICUPLOADER_H_ |
| #define SRC_DAWN_NATIVE_DYNAMICUPLOADER_H_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "dawn/common/Ref.h" |
| #include "dawn/native/Error.h" |
| #include "dawn/native/Forward.h" |
| #include "dawn/native/IntegerTypes.h" |
| #include "dawn/native/RingBufferAllocator.h" |
| |
| // DynamicUploader is the front-end implementation used to manage multiple ring buffers for upload |
| // usage. |
| namespace dawn::native { |
| |
| class BufferBase; |
| |
| struct UploadHandle { |
| uint8_t* mappedBuffer = nullptr; |
| uint64_t startOffset = 0; |
| BufferBase* stagingBuffer = nullptr; |
| }; |
| |
| class DynamicUploader { |
| public: |
| explicit DynamicUploader(DeviceBase* device); |
| ~DynamicUploader() = default; |
| |
| // We add functions to Release StagingBuffers to the DynamicUploader as there's |
| // currently no place to track the allocated staging buffers such that they're freed after |
| // pending commands are finished. This should be changed when better resource allocation is |
| // implemented. |
| void ReleaseStagingBuffer(Ref<BufferBase> stagingBuffer); |
| |
| ResultOrError<UploadHandle> Allocate(uint64_t allocationSize, |
| ExecutionSerial serial, |
| uint64_t offsetAlignment); |
| void Deallocate(ExecutionSerial lastCompletedSerial); |
| |
| bool ShouldFlush(); |
| |
| private: |
| static constexpr uint64_t kRingBufferSize = 4 * 1024 * 1024; |
| uint64_t GetTotalAllocatedSize(); |
| |
| struct RingBuffer { |
| Ref<BufferBase> mStagingBuffer; |
| RingBufferAllocator mAllocator; |
| }; |
| |
| ResultOrError<UploadHandle> AllocateInternal(uint64_t allocationSize, ExecutionSerial serial); |
| |
| std::vector<std::unique_ptr<RingBuffer>> mRingBuffers; |
| SerialQueue<ExecutionSerial, Ref<BufferBase>> mReleasedStagingBuffers; |
| DeviceBase* mDevice; |
| }; |
| } // namespace dawn::native |
| |
| #endif // SRC_DAWN_NATIVE_DYNAMICUPLOADER_H_ |