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# OgreHardwareOcclusionQuery.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://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