Main Page   Namespace List   Class Hierarchy   Alphabetical List   Compound List   File List   Namespace Members   Compound Members   File Members   Related Pages  

OgreHardwareOcclusionQuery.h

Go to the documentation of this file.
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 © 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 #ifndef _HardwareOcclusionQuery__
00026 #define _HardwareOcclusionQuery__
00027 
00028 // Precompiler options
00029 #include "OgrePrerequisites.h"
00030 
00031 namespace Ogre {
00032 
00033 
00037 typedef enum _OCCLUSIONQUERY 
00038 {
00039     HWOCCLUSIONQUERY_FLUSH,   
00040     HWOCCLUSIONQUERY_NOFLUSH, 
00041 } HW_OCCLUSIONQUERY;
00042 
00049 class _OgreExport HardwareOcclusionQuery
00050 {
00051 //----------------------------------------------------------------------
00052 // Public methods
00053 //--
00054 public:
00063     HardwareOcclusionQuery();
00064 
00068     virtual ~HardwareOcclusionQuery();
00069 
00088     virtual void beginOcclusionQuery() = 0;
00089 
00093     virtual void endOcclusionQuery() = 0;
00094 
00105     virtual bool pullOcclusionQuery( unsigned int* NumOfFragments ) = 0;
00106 
00114     virtual bool pullOcclusionQuery( unsigned int* NumOfFragments, const HW_OCCLUSIONQUERY flag  ) = 0;
00115 
00121     virtual unsigned int getLastQuerysPixelcount() = 0;
00122 
00133     virtual void    setSkipRate( int skip ) = 0;
00134     virtual int     getSkipRate() = 0;
00135 
00136 //----------------------------------------------------------------------
00137 // Private members
00138 //--
00139 private:
00140 
00141 };
00142 
00143 }
00144 #endif
00145 

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