OgreGLHardwareVertexBuffer.h
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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 __GLHARDWAREVERTEXBUFFER_H__
00029 #define __GLHARDWAREVERTEXBUFFER_H__
00030 
00031 #include "OgreGLPrerequisites.h"
00032 #include "OgreHardwareVertexBuffer.h"
00033 
00034 namespace Ogre {
00035 
00037     class _OgreGLExport GLHardwareVertexBuffer : public HardwareVertexBuffer 
00038     {
00039     private:
00040         GLuint mBufferId;
00041         // Scratch buffer handling
00042         bool mLockedToScratch;
00043         size_t mScratchOffset;
00044         size_t mScratchSize;
00045         void* mScratchPtr;
00046         bool mScratchUploadOnUnlock;
00047 
00048     protected:
00050         void* lockImpl(size_t offset, size_t length, LockOptions options);
00052         void unlockImpl(void);
00053     public:
00054         GLHardwareVertexBuffer(HardwareBufferManagerBase* mgr, size_t vertexSize, size_t numVertices, 
00055             HardwareBuffer::Usage usage, bool useShadowBuffer); 
00056         ~GLHardwareVertexBuffer();
00058         void readData(size_t offset, size_t length, void* pDest);
00060         void writeData(size_t offset, size_t length, 
00061             const void* pSource, bool discardWholeBuffer = false);
00063         void _updateFromShadow(void);
00064 
00065         GLuint getGLBufferId(void) const { return mBufferId; }
00066     };
00067 
00068 }
00069 #endif // __GLHARDWAREVERTEXBUFFER_H__

Copyright © 2012 Torus Knot Software Ltd
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Last modified Sun Sep 2 2012 07:27:21