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// 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_OPENGL_BUFFERGL_H_
#define DAWNNATIVE_OPENGL_BUFFERGL_H_
#include "dawn_native/Buffer.h"
#include "dawn_native/opengl/opengl_platform.h"
namespace dawn_native { namespace opengl {
class Device;
class Buffer final : public BufferBase {
public:
static ResultOrError<Ref<Buffer>> CreateInternalBuffer(Device* device,
const BufferDescriptor* descriptor,
bool shouldLazyClear);
Buffer(Device* device, const BufferDescriptor* descriptor);
GLuint GetHandle() const;
void EnsureDataInitialized();
void EnsureDataInitializedAsDestination(uint64_t offset, uint64_t size);
void EnsureDataInitializedAsDestination(const CopyTextureToBufferCmd* copy);
private:
Buffer(Device* device, const BufferDescriptor* descriptor, bool shouldLazyClear);
~Buffer() override;
MaybeError MapAsyncImpl(wgpu::MapMode mode, size_t offset, size_t size) override;
void UnmapImpl() override;
void DestroyImpl() override;
bool IsCPUWritableAtCreation() const override;
MaybeError MapAtCreationImpl() override;
void* GetMappedPointerImpl() override;
uint64_t GetAppliedSize() const;
void InitializeToZero();
GLuint mBuffer = 0;
void* mMappedData = nullptr;
};
}} // namespace dawn_native::opengl
#endif // DAWNNATIVE_OPENGL_BUFFERGL_H_