OgreGLHardwareBufferManager.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) 2000-2013 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
11 in the Software without restriction, including without limitation the rights
12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 copies of the Software, and to permit persons to whom the Software is
14 furnished to do so, subject to the following conditions:
15 
16 The above copyright notice and this permission notice shall be included in
17 all copies or substantial portions of the Software.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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26 -----------------------------------------------------------------------------
27 */
28 #ifndef __GLHARWAREBUFFERMANAGER_H__
29 #define __GLHARWAREBUFFERMANAGER_H__
30 
31 #include "OgreGLPrerequisites.h"
33 
34 namespace Ogre {
35 
36  class GLStateCacheManager;
37 
38 // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?)
39 # define OGRE_GL_DEFAULT_MAP_BUFFER_THRESHOLD (1024 * 32)
40 
43  {
44  protected:
47  OGRE_MUTEX(mScratchMutex);
49 
50  public:
54  HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize,
55  size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false);
57  HardwareIndexBufferSharedPtr createIndexBuffer(
58  HardwareIndexBuffer::IndexType itype, size_t numIndexes,
59  HardwareBuffer::Usage usage, bool useShadowBuffer = false);
61  RenderToVertexBufferSharedPtr createRenderToVertexBuffer();
63  HardwareUniformBufferSharedPtr createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,bool useShadowBuffer, const String& name = "");
64  HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes,
66  bool useShadowBuffer = false, const String& name = "");
68  static GLenum getGLUsage(unsigned int usage);
69 
71  static GLenum getGLType(unsigned int type);
72 
73  GLStateCacheManager * getStateCacheManager() { return mStateCacheManager; }
74 
82  void* allocateScratch(uint32 size);
83 
85  void deallocateScratch(void* ptr);
86 
89  size_t getGLMapBufferThreshold() const;
90  void setGLMapBufferThreshold( const size_t value );
91  };
92 
95  {
96  public:
99  {
100 
101  }
103  {
104  OGRE_DELETE mImpl;
105  }
106 
107 
108 
110  static GLenum getGLUsage(unsigned int usage)
111  { return GLHardwareBufferManagerBase::getGLUsage(usage); }
112 
114  static GLenum getGLType(unsigned int type)
116 
125  {
126  return static_cast<GLHardwareBufferManagerBase*>(mImpl)->allocateScratch(size);
127  }
128 
130  void deallocateScratch(void* ptr)
131  {
132  static_cast<GLHardwareBufferManagerBase*>(mImpl)->deallocateScratch(ptr);
133  }
134 
137  size_t getGLMapBufferThreshold() const
138  {
139  return static_cast<GLHardwareBufferManagerBase*>(mImpl)->getGLMapBufferThreshold();
140  }
141  void setGLMapBufferThreshold( const size_t value )
142  {
143  static_cast<GLHardwareBufferManagerBase*>(mImpl)->setGLMapBufferThreshold(value);
144  }
145 
146  };
147 
148 }
149 
150 #endif // __GLHARWAREBUFFERMANAGER_H__
Ogre::HardwareCounterBufferSharedPtr
Shared pointer implementation used to share counter buffers.
Definition: OgreHardwareCounterBuffer.h:68
Ogre
Definition: OgreAndroidLogListener.h:34
Ogre::GLHardwareBufferManager::~GLHardwareBufferManager
~GLHardwareBufferManager()
Definition: OgreGLHardwareBufferManager.h:102
Ogre::GLHardwareBufferManagerBase::getGLType
static GLenum getGLType(unsigned int type)
Utility function to get the correct GL type based on VET's.
Ogre::GLHardwareBufferManagerBase::mScratchBufferPool
char * mScratchBufferPool
Definition: OgreGLHardwareBufferManager.h:46
Ogre::GLHardwareBufferManager::GLHardwareBufferManager
GLHardwareBufferManager()
Definition: OgreGLHardwareBufferManager.h:97
Ogre::HardwareBufferManagerBase
Base definition of a hardware buffer manager.
Definition: OgreHardwareBufferManager.h:113
OGRE_DELETE
#define OGRE_DELETE
Definition: OgreMemoryAllocatorConfig.h:474
Ogre::HardwareIndexBufferSharedPtr
Shared pointer implementation used to share index buffers.
Definition: OgreHardwareIndexBuffer.h:79
Ogre::GLHardwareBufferManager::allocateScratch
void * allocateScratch(uint32 size)
Allocator method to allow us to use a pool of memory as a scratch area for hardware buffers.
Definition: OgreGLHardwareBufferManager.h:124
Ogre::uint32
unsigned int uint32
Definition: OgrePlatform.h:359
Ogre::String
_StringBase String
Definition: OgrePrerequisites.h:439
Ogre::GLHardwareBufferManagerBase::mStateCacheManager
GLStateCacheManager * mStateCacheManager
Definition: OgreGLHardwareBufferManager.h:45
OGRE_MUTEX
#define OGRE_MUTEX(name)
Definition: OgreThreadDefinesBoost.h:47
Ogre::HardwareUniformBufferSharedPtr
Shared pointer implementation used to share uniform buffers.
Definition: OgreHardwareUniformBuffer.h:68
Ogre::GLHardwareBufferManagerBase::getStateCacheManager
GLStateCacheManager * getStateCacheManager()
Definition: OgreGLHardwareBufferManager.h:73
Ogre::GLStateCacheManager
An in memory cache of the OpenGL state.
Definition: OgreGLStateCacheManager.h:55
Ogre::HardwareVertexBufferSharedPtr
Shared pointer implementation used to share vertex buffers.
Definition: OgreHardwareVertexBuffer.h:86
_OgreGLExport
#define _OgreGLExport
Definition: OgreGLPrerequisites.h:99
OgreGLPrerequisites.h
Ogre::GLHardwareBufferManager::getGLUsage
static GLenum getGLUsage(unsigned int usage)
Utility function to get the correct GL usage based on HBU's.
Definition: OgreGLHardwareBufferManager.h:110
Ogre::HardwareBufferManager
Singleton wrapper for hardware buffer manager.
Definition: OgreHardwareBufferManager.h:429
Ogre::HardwareIndexBuffer::IndexType
IndexType
Definition: OgreHardwareIndexBuffer.h:49
Ogre::GLHardwareBufferManagerBase::mMapBufferThreshold
size_t mMapBufferThreshold
Definition: OgreGLHardwareBufferManager.h:48
Ogre::GLHardwareBufferManager
GLHardwareBufferManagerBase as a Singleton.
Definition: OgreGLHardwareBufferManager.h:94
Ogre::SharedPtr
Reference-counted shared pointer, used for objects where implicit destruction is required.
Definition: OgrePrerequisites.h:310
Ogre::GLHardwareBufferManager::deallocateScratch
void deallocateScratch(void *ptr)
Definition: OgreGLHardwareBufferManager.h:130
Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE
@ HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE
Combination of HBU_DYNAMIC, HBU_WRITE_ONLY and HBU_DISCARDABLE.
Definition: OgreHardwareBuffer.h:116
OGRE_NEW
#define OGRE_NEW
Definition: OgreMemoryAllocatorConfig.h:473
Ogre::HardwareBuffer::Usage
Usage
Enums describing buffer usage; not mutually exclusive.
Definition: OgreHardwareBuffer.h:79
Ogre::GLHardwareBufferManagerBase
Implementation of HardwareBufferManager for OpenGL.
Definition: OgreGLHardwareBufferManager.h:42
Ogre::GLHardwareBufferManagerBase::getGLUsage
static GLenum getGLUsage(unsigned int usage)
Utility function to get the correct GL usage based on HBU's.
Ogre::GLHardwareBufferManager::setGLMapBufferThreshold
void setGLMapBufferThreshold(const size_t value)
Definition: OgreGLHardwareBufferManager.h:141
OgreHardwareBufferManager.h
Ogre::GLHardwareBufferManager::getGLMapBufferThreshold
size_t getGLMapBufferThreshold() const
Threshold after which glMapBuffer is used and not glBufferSubData.
Definition: OgreGLHardwareBufferManager.h:137
Ogre::GLHardwareBufferManager::getGLType
static GLenum getGLType(unsigned int type)
Utility function to get the correct GL type based on VET's.
Definition: OgreGLHardwareBufferManager.h:114

Copyright © 2012 Torus Knot Software Ltd
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Last modified Tue Apr 13 2021 08:53:15