vertex_array_manager.h revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246 
1// Copyright (c) 2012 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#ifndef GPU_COMMAND_BUFFER_SERVICE_VERTEX_ARRAY_MANAGER_H_
6#define GPU_COMMAND_BUFFER_SERVICE_VERTEX_ARRAY_MANAGER_H_
7
8#include "base/basictypes.h"
9#include "base/containers/hash_tables.h"
10#include "base/logging.h"
11#include "base/memory/ref_counted.h"
12#include "base/memory/scoped_ptr.h"
13#include "gpu/command_buffer/service/gl_utils.h"
14#include "gpu/gpu_export.h"
15
16namespace gpu {
17namespace gles2 {
18
19class VertexAttribManager;
20
21// This class keeps track of the vertex arrays and their sizes so we can do
22// bounds checking.
23class GPU_EXPORT VertexArrayManager {
24 public:
25  VertexArrayManager();
26  ~VertexArrayManager();
27
28  // Must call before destruction.
29  void Destroy(bool have_context);
30
31  // Creates a VertexArrayInfo for the given vertex array.
32  void CreateVertexAttribManager(GLuint client_id, GLuint service_id,
33      uint32 num_vertex_attribs);
34
35  // Gets the vertex attrib manager for the given vertex array.
36  VertexAttribManager* GetVertexAttribManager(GLuint client_id);
37
38  // Removes the vertex attrib manager for the given vertex array.
39  void RemoveVertexAttribManager(GLuint client_id);
40
41  // Gets a client id for a given service id.
42  bool GetClientId(GLuint service_id, GLuint* client_id) const;
43
44 private:
45  friend class VertexAttribManager;
46
47  void StartTracking(VertexAttribManager* vertex_attrib_manager);
48  void StopTracking(VertexAttribManager* vertex_attrib_manager);
49
50  // Info for each vertex array in the system.
51  typedef base::hash_map<GLuint, scoped_refptr<VertexAttribManager> >
52      VertexAttribManagerMap;
53  VertexAttribManagerMap vertex_attrib_managers_;
54
55  // Counts the number of VertexArrayInfo allocated with 'this' as its manager.
56  // Allows to check no VertexArrayInfo will outlive this.
57  unsigned int vertex_attrib_manager_count_;
58
59  bool have_context_;
60
61  DISALLOW_COPY_AND_ASSIGN(VertexArrayManager);
62};
63
64}  // namespace gles2
65}  // namespace gpu
66
67#endif  // GPU_COMMAND_BUFFER_SERVICE_VERTEX_ARRAY_MANAGER_H_
68