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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_COMMAND_BUFFER_SERVICE_DAWN_SERVICE_MEMORY_TRANSFER_SERVICE_H_
#define GPU_COMMAND_BUFFER_SERVICE_DAWN_SERVICE_MEMORY_TRANSFER_SERVICE_H_
#include <dawn/wire/WireServer.h>
#include "base/memory/raw_ptr.h"
namespace gpu {
class CommonDecoder;
namespace webgpu {
class DawnServiceMemoryTransferService final
: public dawn::wire::server::MemoryTransferService {
public:
DawnServiceMemoryTransferService(CommonDecoder* decoder);
~DawnServiceMemoryTransferService() override;
// Deserialize data to create Read/Write handles. These handles are for the
// client to Read/Write data. The serialized data is a MemoryTransferHandle
// which contains the id, offset, and size of a shared memory region. If the
// decoded region is invalid, these functions return false and result in a
// context lost.
// The Read and Write handles, respectively, are used to
// 1) Copy from GPU service memory into client-visible shared memory.
// 2) Copy from client-visible shared memory into GPU service memory.
bool DeserializeReadHandle(const void* deserialize_pointer,
size_t deserialize_size,
ReadHandle** read_handle) override;
bool DeserializeWriteHandle(const void* deserialize_pointer,
size_t deserialize_size,
WriteHandle** write_handle) override;
private:
raw_ptr<CommonDecoder> decoder_;
};
} // namespace webgpu
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_DAWN_SERVICE_MEMORY_TRANSFER_SERVICE_H_
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