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OgreHardwareIndexBuffer.cpp

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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 © 2000-2002 The OGRE Team
00008 Also see acknowledgements in Readme.html
00009 
00010 This program is free software; you can redistribute it and/or modify it under
00011 the terms of the GNU Lesser General Public License as published by the Free Software
00012 Foundation; either version 2 of the License, or (at your option) any later
00013 version.
00014 
00015 This program is distributed in the hope that it will be useful, but WITHOUT
00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public License along with
00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00022 http://www.gnu.org/copyleft/lesser.txt.
00023 -----------------------------------------------------------------------------
00024 */
00025 #include "OgreStableHeaders.h"
00026 #include "OgreHardwareIndexBuffer.h"
00027 #include "OgreHardwareBufferManager.h"
00028 #include "OgreDefaultHardwareBufferManager.h"
00029 
00030 
00031 namespace Ogre {
00032 
00033     //-----------------------------------------------------------------------------
00034     HardwareIndexBuffer::HardwareIndexBuffer(IndexType idxType, 
00035         size_t numIndexes, HardwareBuffer::Usage usage, 
00036         bool useSystemMemory, bool useShadowBuffer) 
00037         : HardwareBuffer(usage, useSystemMemory, useShadowBuffer), mIndexType(idxType), mNumIndexes(numIndexes)
00038     {
00039         // Calculate the size of the indexes
00040         switch (mIndexType)
00041         {
00042         case IT_16BIT:
00043             mIndexSize = sizeof(unsigned short);
00044             break;
00045         case IT_32BIT:
00046             mIndexSize = sizeof(unsigned int);
00047             break;
00048         }
00049         mSizeInBytes = mIndexSize * mNumIndexes;
00050 
00051         // Create a shadow buffer if required
00052         if (mUseShadowBuffer)
00053         {
00054             mpShadowBuffer = new DefaultHardwareIndexBuffer(mIndexType, 
00055                 mNumIndexes, HardwareBuffer::HBU_DYNAMIC);
00056         }
00057 
00058 
00059     }
00060     //-----------------------------------------------------------------------------
00061     HardwareIndexBuffer::~HardwareIndexBuffer()
00062     {
00063         if (mpShadowBuffer)
00064         {
00065             delete mpShadowBuffer;
00066         }
00067     }
00068     //-----------------------------------------------------------------------------
00069     HardwareIndexBufferSharedPtr::HardwareIndexBufferSharedPtr(HardwareIndexBuffer* buf)
00070         : SharedPtr<HardwareIndexBuffer>(buf)
00071     {
00072 
00073     }
00074 
00075 }
00076 

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:48:29 2004