99 lines
3.5 KiB
C++
99 lines
3.5 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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namespace dawn_native {
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MaybeError ValidateBufferDescriptor(DeviceBase* device, const BufferDescriptor* descriptor);
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static constexpr dawn::BufferUsageBit kReadOnlyBufferUsages =
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dawn::BufferUsageBit::MapRead | dawn::BufferUsageBit::TransferSrc |
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dawn::BufferUsageBit::Index | dawn::BufferUsageBit::Vertex | dawn::BufferUsageBit::Uniform;
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static constexpr dawn::BufferUsageBit kWritableBufferUsages =
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dawn::BufferUsageBit::MapWrite | dawn::BufferUsageBit::TransferDst |
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dawn::BufferUsageBit::Storage;
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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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~BufferBase();
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static BufferBase* MakeError(DeviceBase* device);
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uint32_t GetSize() const;
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dawn::BufferUsageBit GetUsage() const;
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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 uint8_t* data);
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void MapReadAsync(DawnBufferMapReadCallback callback, DawnCallbackUserdata userdata);
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void MapWriteAsync(DawnBufferMapWriteCallback callback, DawnCallbackUserdata 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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void CallMapReadCallback(uint32_t serial,
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DawnBufferMapAsyncStatus 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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DawnBufferMapAsyncStatus status,
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void* pointer,
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uint32_t dataLength);
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private:
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virtual MaybeError SetSubDataImpl(uint32_t start, uint32_t count, const uint8_t* data);
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virtual void MapReadAsyncImpl(uint32_t serial) = 0;
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virtual void 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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MaybeError ValidateSetSubData(uint32_t start, uint32_t count) const;
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MaybeError ValidateMap(dawn::BufferUsageBit requiredUsage) const;
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MaybeError ValidateUnmap() const;
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MaybeError ValidateDestroy() const;
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uint32_t mSize = 0;
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dawn::BufferUsageBit mUsage = dawn::BufferUsageBit::None;
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DawnBufferMapReadCallback mMapReadCallback = nullptr;
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DawnBufferMapWriteCallback mMapWriteCallback = nullptr;
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DawnCallbackUserdata mMapUserdata = 0;
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uint32_t mMapSerial = 0;
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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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