115 lines
4.1 KiB
C++
115 lines
4.1 KiB
C++
// Copyright 2017 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 DAWNNATIVE_BUFFER_H_
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#define DAWNNATIVE_BUFFER_H_
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#include "dawn_native/Error.h"
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#include "dawn_native/Forward.h"
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#include "dawn_native/ObjectBase.h"
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#include "dawn_native/dawn_platform.h"
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#include <memory>
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namespace dawn_native {
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MaybeError ValidateBufferDescriptor(DeviceBase* device, const BufferDescriptor* descriptor);
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static constexpr wgpu::BufferUsage kReadOnlyBufferUsages =
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wgpu::BufferUsage::MapRead | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::Index |
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wgpu::BufferUsage::Vertex | wgpu::BufferUsage::Uniform | kReadOnlyStorageBuffer;
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class BufferBase : public ObjectBase {
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enum class BufferState {
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Unmapped,
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Mapped,
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Destroyed,
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};
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public:
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BufferBase(DeviceBase* device, const BufferDescriptor* descriptor);
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static BufferBase* MakeError(DeviceBase* device);
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static BufferBase* MakeErrorMapped(DeviceBase* device,
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uint64_t size,
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uint8_t** mappedPointer);
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uint64_t GetSize() const;
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wgpu::BufferUsage GetUsage() const;
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MaybeError MapAtCreation(uint8_t** mappedPointer);
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void OnMapCommandSerialFinished(uint32_t mapSerial, bool isWrite);
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MaybeError ValidateCanUseInSubmitNow() const;
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// Dawn API
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void SetSubData(uint32_t start, uint32_t count, const void* data);
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void MapReadAsync(WGPUBufferMapReadCallback callback, void* userdata);
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void MapWriteAsync(WGPUBufferMapWriteCallback callback, void* userdata);
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void Unmap();
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void Destroy();
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protected:
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BufferBase(DeviceBase* device, ObjectBase::ErrorTag tag);
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~BufferBase() override;
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void CallMapReadCallback(uint32_t serial,
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WGPUBufferMapAsyncStatus status,
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const void* pointer,
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uint32_t dataLength);
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void CallMapWriteCallback(uint32_t serial,
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WGPUBufferMapAsyncStatus status,
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void* pointer,
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uint32_t dataLength);
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void DestroyInternal();
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bool IsMapped() const;
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private:
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virtual MaybeError MapAtCreationImpl(uint8_t** mappedPointer) = 0;
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virtual MaybeError SetSubDataImpl(uint32_t start, uint32_t count, const void* data);
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virtual MaybeError MapReadAsyncImpl(uint32_t serial) = 0;
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virtual MaybeError MapWriteAsyncImpl(uint32_t serial) = 0;
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virtual void UnmapImpl() = 0;
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virtual void DestroyImpl() = 0;
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virtual void* GetMappedPointerImpl() = 0;
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virtual bool IsMapWritable() const = 0;
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MaybeError CopyFromStagingBuffer();
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MaybeError ValidateSetSubData(uint32_t start, uint32_t count) const;
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MaybeError ValidateMap(wgpu::BufferUsage requiredUsage,
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WGPUBufferMapAsyncStatus* status) const;
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MaybeError ValidateUnmap() const;
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MaybeError ValidateDestroy() const;
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uint64_t mSize = 0;
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wgpu::BufferUsage mUsage = wgpu::BufferUsage::None;
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WGPUBufferMapReadCallback mMapReadCallback = nullptr;
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WGPUBufferMapWriteCallback mMapWriteCallback = nullptr;
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void* mMapUserdata = 0;
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uint32_t mMapSerial = 0;
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std::unique_ptr<StagingBufferBase> mStagingBuffer;
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BufferState mState;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_BUFFER_H_
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