00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://ogre.sourceforge.net/ 00006 00007 Copyright (c) 2000-2005 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 #ifndef _HardwareOcclusionQuery__ 00026 #define _HardwareOcclusionQuery__ 00027 00028 // Precompiler options 00029 #include "OgrePrerequisites.h" 00030 00031 namespace Ogre { 00032 00033 00034 00042 class _OgreExport HardwareOcclusionQuery 00043 { 00044 //---------------------------------------------------------------------- 00045 // Public methods 00046 //-- 00047 public: 00056 HardwareOcclusionQuery(); 00057 00061 virtual ~HardwareOcclusionQuery(); 00062 00079 virtual void beginOcclusionQuery() = 0; 00080 00084 virtual void endOcclusionQuery() = 0; 00085 00093 virtual bool pullOcclusionQuery(unsigned int* NumOfFragments) = 0; 00094 00100 unsigned int getLastQuerysPixelcount() const { return mPixelCount; } 00101 00106 virtual bool isStillOutstanding(void) = 0; 00107 00108 00109 //---------------------------------------------------------------------- 00110 // protected members 00111 //-- 00112 protected : 00113 // numbers of visible pixels determined by last query 00114 unsigned int mPixelCount; 00115 // is query hasn't yet returned a result. 00116 bool mIsQueryResultStillOutstanding; 00117 }; 00118 00119 } 00120 #endif 00121
Copyright © 2000-2005 by The OGRE Team
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Last modified Sun Jan 21 10:01:36 2007