00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.ogre3d.org/ 00006 00007 Copyright (c) 2000-2012 Torus Knot Software Ltd 00008 00009 Permission is hereby granted, free of charge, to any person obtaining a copy 00010 of this software and associated documentation files (the "Software"), to deal 00011 in the Software without restriction, including without limitation the rights 00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00013 copies of the Software, and to permit persons to whom the Software is 00014 furnished to do so, subject to the following conditions: 00015 00016 The above copyright notice and this permission notice shall be included in 00017 all copies or substantial portions of the Software. 00018 00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00025 THE SOFTWARE. 00026 ----------------------------------------------------------------------------- 00027 */ 00028 #ifndef __GLHARWAREBUFFERMANAGER_H__ 00029 #define __GLHARWAREBUFFERMANAGER_H__ 00030 00031 #include "OgreGLPrerequisites.h" 00032 #include "OgreHardwareBufferManager.h" 00033 00034 namespace Ogre { 00035 00036 // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?) 00037 # define OGRE_GL_DEFAULT_MAP_BUFFER_THRESHOLD (1024 * 32) 00038 00039 00041 class _OgreGLExport GLHardwareBufferManagerBase : public HardwareBufferManagerBase 00042 { 00043 protected: 00044 char* mScratchBufferPool; 00045 OGRE_MUTEX(mScratchMutex) 00046 size_t mMapBufferThreshold; 00047 00048 public: 00049 GLHardwareBufferManagerBase(); 00050 ~GLHardwareBufferManagerBase(); 00052 HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize, 00053 size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false); 00055 HardwareIndexBufferSharedPtr createIndexBuffer( 00056 HardwareIndexBuffer::IndexType itype, size_t numIndexes, 00057 HardwareBuffer::Usage usage, bool useShadowBuffer = false); 00059 RenderToVertexBufferSharedPtr createRenderToVertexBuffer(); 00061 static GLenum getGLUsage(unsigned int usage); 00062 00064 static GLenum getGLType(unsigned int type); 00065 00073 void* allocateScratch(uint32 size); 00074 00076 void deallocateScratch(void* ptr); 00077 00080 size_t getGLMapBufferThreshold() const; 00081 void setGLMapBufferThreshold( const size_t value ); 00082 }; 00083 00085 class _OgreGLExport GLHardwareBufferManager : public HardwareBufferManager 00086 { 00087 public: 00088 GLHardwareBufferManager() 00089 : HardwareBufferManager(OGRE_NEW GLHardwareBufferManagerBase()) 00090 { 00091 00092 } 00093 ~GLHardwareBufferManager() 00094 { 00095 OGRE_DELETE mImpl; 00096 } 00097 00098 00099 00101 static GLenum getGLUsage(unsigned int usage) 00102 { return GLHardwareBufferManagerBase::getGLUsage(usage); } 00103 00105 static GLenum getGLType(unsigned int type) 00106 { return GLHardwareBufferManagerBase::getGLType(type); } 00107 00115 void* allocateScratch(uint32 size) 00116 { 00117 return static_cast<GLHardwareBufferManagerBase*>(mImpl)->allocateScratch(size); 00118 } 00119 00121 void deallocateScratch(void* ptr) 00122 { 00123 static_cast<GLHardwareBufferManagerBase*>(mImpl)->deallocateScratch(ptr); 00124 } 00125 00128 size_t getGLMapBufferThreshold() const 00129 { 00130 return static_cast<GLHardwareBufferManagerBase*>(mImpl)->getGLMapBufferThreshold(); 00131 } 00132 void setGLMapBufferThreshold( const size_t value ) 00133 { 00134 static_cast<GLHardwareBufferManagerBase*>(mImpl)->setGLMapBufferThreshold(value); 00135 } 00136 00137 }; 00138 00139 } 00140 00141 #endif // __GLHARWAREBUFFERMANAGER_H__
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Fri May 25 2012 21:48:50