gpu/command_buffer/service/cmd_buffer_engine.h

   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:
  18   CommandBufferEngine() {
  19   }
  20
  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 scoped_refptr<gpu::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_