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OpenGLCache.h

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00001 /***************************************************************************
00002 *cr
00003 *cr (C) Copyright 1995-2019 The Board of Trustees of the
00004 *cr University of Illinois
00005 *cr All Rights Reserved
00006 *cr
00007 ***************************************************************************/
00008 /***************************************************************************
00009 * RCS INFORMATION:
00010 *
00011 * $RCSfile: OpenGLCache.h,v $
00012 * $Author: johns $ $Locker: $ $State: Exp $
00013 * $Revision: 1.11 $ $Date: 2020年02月26日 06:00:57 $
00014 *
00015 ***************************************************************************/
00021 #ifndef OPENGLCACHE_H
00022 #define OPENGLCACHE_H
00023 
00024 #include <stdlib.h>
00025 #include "OpenGLExtensions.h"
00026 
00027 #define GLCACHE_FAIL 0
00028 
00032 class OpenGLCache {
00033 private:
00034 struct idlink {
00035 idlink *next; 
00036 int used; 
00037 const unsigned long id; 
00038 const GLuint gltag; 
00039 
00040 idlink(unsigned long theid, GLuint tag, idlink *thenext)
00041 : next(thenext), used(1), id(theid), gltag(tag) {}
00042 };
00043 
00044 idlink * cache; 
00045 
00046 public:
00047 OpenGLCache();
00048 ~OpenGLCache(); 
00049 
00050 void encache(unsigned long id, GLuint tag); 
00051 void markUnused(); 
00052 GLuint markUsed(unsigned long id); 
00053 GLuint deleteUnused(); 
00054 };
00055 
00056 #endif

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