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Object-Oriented Graphics Rendering Engine
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OgreGLESHardwareBufferManager.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4  (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2008 Renato Araujo Oliveira Filho <renatox@gmail.com>
8 Copyright (c) 2000-2014 Torus Knot Software Ltd
9 
10 Permission is hereby granted, free of charge, to any person obtaining a copy
11 of this software and associated documentation files (the "Software"), to deal
12 in the Software without restriction, including without limitation the rights
13 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 copies of the Software, and to permit persons to whom the Software is
15 furnished to do so, subject to the following conditions:
16 
17 The above copyright notice and this permission notice shall be included in
18 all copies or substantial portions of the Software.
19 
20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 THE SOFTWARE.
27 -----------------------------------------------------------------------------
28 */
29 
30 #ifndef __GLESHardwareBufferManager_H__
31 #define __GLESHardwareBufferManager_H__
32 
33 #include "OgreGLESPrerequisites.h"
36 
37 namespace Ogre {
38  // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?)
39  # define OGRE_GL_MAP_BUFFER_THRESHOLD (1024 * 32)
40 
43  {
44  protected:
46  OGRE_MUTEX(mScratchMutex);
48 
49  public:
53  HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize,
54  size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false);
56  HardwareIndexBufferSharedPtr createIndexBuffer(
57  HardwareIndexBuffer::IndexType itype, size_t numIndexes,
58  HardwareBuffer::Usage usage, bool useShadowBuffer = false);
60  RenderToVertexBufferSharedPtr createRenderToVertexBuffer();
61 
63  static GLenum getGLUsage(unsigned int usage);
64 
66  static GLenum getGLType(unsigned int type);
67 
75  void* allocateScratch(uint32 size);
76 
78  void deallocateScratch(void* ptr);
79 
82  size_t getGLMapBufferThreshold() const;
83  void setGLMapBufferThreshold( const size_t value );
85  createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,bool useShadowBuffer, const String& name = "");
86  HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes,
88  bool useShadowBuffer = false, const String& name = "");
89  };
90 
93  {
94  public:
97  {
98 
99  }
101  {
102  OGRE_DELETE mImpl;
103  }
104 
105 
106 
108  static GLenum getGLUsage(unsigned int usage)
110 
112  static GLenum getGLType(unsigned int type)
114 
123  {
124  return static_cast<GLESHardwareBufferManagerBase*>(mImpl)->allocateScratch(size);
125  }
126 
128  void deallocateScratch(void* ptr)
129  {
130  static_cast<GLESHardwareBufferManagerBase*>(mImpl)->deallocateScratch(ptr);
131  }
134  size_t getGLMapBufferThreshold() const
135  {
136  return static_cast<GLESHardwareBufferManagerBase*>(mImpl)->getGLMapBufferThreshold();
137  }
138  void setGLMapBufferThreshold( const size_t value )
139  {
140  static_cast<GLESHardwareBufferManagerBase*>(mImpl)->setGLMapBufferThreshold(value);
141  }
142 
143  };
144 
145 }
146 
147 #endif
unsigned int uint32
Definition: OgrePlatform.h:420
Singleton wrapper for hardware buffer manager.
Shared pointer implementation used to share uniform buffers.
#define OGRE_MUTEX(name)
void * allocateScratch(uint32 size)
Allocator method to allow us to use a pool of memory as a scratch area for hardware buffers...
Shared pointer implementation used to share vertex buffers.
static GLenum getGLUsage(unsigned int usage)
Utility function to get the correct GL usage based on HBU's.
#define _OgreGLESExport
Implementation of HardwareBufferManager for OpenGL ES.
Combination of HBU_DYNAMIC, HBU_WRITE_ONLY and HBU_DISCARDABLE.
Shared pointer implementation used to share index buffers.
Base definition of a hardware buffer manager.
static GLenum getGLUsage(unsigned int usage)
Utility function to get the correct GL usage based on HBU's.
Usage
Enums describing buffer usage; not mutually exclusive.
#define OGRE_DELETE
size_t getGLMapBufferThreshold() const
Threshold after which glMapBuffer is used and not glBufferSubData.
#define OGRE_NEW
static GLenum getGLType(unsigned int type)
Utility function to get the correct GL type based on VET's.
Shared pointer implementation used to share counter buffers.
Reference-counted shared pointer, used for objects where implicit destruction is required.
_StringBase String
Definition: OgreCommon.h:53
static GLenum getGLType(unsigned int type)
Utility function to get the correct GL type based on VET's.
GLESHardwareBufferManagerBase as a Singleton.