1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // This file defines the CommandBufferEngine class, providing the main loop for 6 // the service, exposing the RPC API, managing the command parser. 7 8 #ifndef GPU_COMMAND_BUFFER_SERVICE_CMD_BUFFER_ENGINE_H_ 9 #define GPU_COMMAND_BUFFER_SERVICE_CMD_BUFFER_ENGINE_H_ 10 11 #include "base/basictypes.h" 12 #include "gpu/command_buffer/common/buffer.h" 13 14 namespace gpu { 15 16 class CommandBufferEngine { 17 public: CommandBufferEngine()18 CommandBufferEngine() { 19 } 20 ~CommandBufferEngine()21 virtual ~CommandBufferEngine() { 22 } 23 24 // Gets the base address and size of a registered shared memory buffer. 25 // Parameters: 26 // shm_id: the identifier for the shared memory buffer. 27 virtual Buffer GetSharedMemoryBuffer(int32 shm_id) = 0; 28 29 // Sets the token value. 30 virtual void set_token(int32 token) = 0; 31 32 // Sets the shared memory buffer used for commands. 33 virtual bool SetGetBuffer(int32 transfer_buffer_id) = 0; 34 35 // Sets the "get" pointer. Return false if offset is out of range. 36 virtual bool SetGetOffset(int32 offset) = 0; 37 38 // Gets the "get" pointer. 39 virtual int32 GetGetOffset() = 0; 40 41 private: 42 DISALLOW_COPY_AND_ASSIGN(CommandBufferEngine); 43 }; 44 45 } // namespace gpu 46 47 #endif // GPU_COMMAND_BUFFER_SERVICE_CMD_BUFFER_ENGINE_H_ 48