gpu/command_buffer/service/vertex_array_manager.h

   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
  16 namespace gpu {
  17 namespace gles2 {
  18
  19 class VertexAttribManager;
  20
  21 // This class keeps track of the vertex arrays and their sizes so we can do
  22 // bounds checking.
  23 class 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 VertexAttribManager and if client_visible,
  32   // maps it to the client_id.
  33   scoped_refptr<VertexAttribManager> CreateVertexAttribManager(
  34       GLuint client_id,
  35       GLuint service_id,
  36       uint32 num_vertex_attribs,
  37       bool client_visible);
  38
  39   // Gets the vertex attrib manager for the given vertex array.
  40   VertexAttribManager* GetVertexAttribManager(GLuint client_id);
  41
  42   // Removes the vertex attrib manager for the given vertex array.
  43   void RemoveVertexAttribManager(GLuint client_id);
  44
  45   // Gets a client id for a given service id.
  46   bool GetClientId(GLuint service_id, GLuint* client_id) const;
  47
  48  private:
  49   friend class VertexAttribManager;
  50
  51   void StartTracking(VertexAttribManager* vertex_attrib_manager);
  52   void StopTracking(VertexAttribManager* vertex_attrib_manager);
  53
  54   // Info for each vertex array in the system.
  55   typedef base::hash_map<GLuint, scoped_refptr<VertexAttribManager> >
  56       VertexAttribManagerMap;
  57   VertexAttribManagerMap vertex_attrib_managers_;
  58
  59   // Counts the number of VertexArrayInfo allocated with 'this' as its manager.
  60   // Allows to check no VertexArrayInfo will outlive this.
  61   unsigned int vertex_attrib_manager_count_;
  62
  63   bool have_context_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(VertexArrayManager);
  66 };
  67
  68 }  // namespace gles2
  69 }  // namespace gpu
  70
  71 #endif  // GPU_COMMAND_BUFFER_SERVICE_VERTEX_ARRAY_MANAGER_H_