src/dawn/native/webgpu/BufferWGPU.h

// Copyright 2025 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NATIVE_WEBGPU_BUFFERWGPU_H_
#define SRC_DAWN_NATIVE_WEBGPU_BUFFERWGPU_H_

#include "dawn/native/Buffer.h"

#include "dawn/native/webgpu/Forward.h"

namespace dawn::native::webgpu {

class Device;

class Buffer final : public BufferBase {
  public:
    static ResultOrError<Ref<Buffer>> Create(Device* device,
                                             const UnpackedPtr<BufferDescriptor>& descriptor);
    Buffer(Device* device, const UnpackedPtr<BufferDescriptor>& descriptor, WGPUBuffer innerBuffer);

    WGPUBuffer GetInnerHandle() const;

  private:
    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;

    WGPUBuffer mInnerBuffer = nullptr;

    raw_ptr<void> mMappedData = nullptr;
};

}  // namespace dawn::native::webgpu

#endif  // SRC_DAWN_NATIVE_WEBGPU_BUFFERWGPU_H_