# 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://www.ogre3d.org
    00006
    00007 Copyright (c) 2000-2009 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 _HardwareOcclusionQuery__
    00029 #define _HardwareOcclusionQuery__
    00030
    00031 // Precompiler options
    00032 #include "OgrePrerequisites.h"
    00033
    00034 namespace Ogre {
    00035
    00036
    00037
    00051     class _OgreExport HardwareOcclusionQuery : public RenderSysAlloc
    00052 {
    00053 //----------------------------------------------------------------------
    00054 // Public methods
    00055 //--
    00056 public:
    00065     HardwareOcclusionQuery();
    00066
    00070     virtual ~HardwareOcclusionQuery();
    00071
    00088     virtual void beginOcclusionQuery() = 0;
    00089
    00093     virtual void endOcclusionQuery() = 0;
    00094
    00102     virtual bool pullOcclusionQuery(unsigned int* NumOfFragments) = 0;
    00103
    00109     unsigned int getLastQuerysPixelcount() const { return mPixelCount; }
    00110
    00115      virtual bool isStillOutstanding(void) = 0;
    00116
    00117
    00118     //----------------------------------------------------------------------
    00119     // protected members
    00120     //--
    00121     protected :
    00122         // numbers of visible pixels determined by last query
    00123         unsigned int mPixelCount;
    00124         // is query hasn't yet returned a result.
    00125         bool         mIsQueryResultStillOutstanding;
    00126 };
    00127
    00130 }
    00131 #endif
    00132

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Wed Nov 3 2010 19:24:51