Open Inventor Reference
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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | This file defines the SoGLCacheList class, which can be used 00048 | is used by nodes like Separator to maintain a list of render 00049 | caches that might be used. It also implements an auto caching 00050 | scheme that tries to be smart about only building caches when 00051 | things are not changing. 00052 | 00053 | Typical use: 00054 | In a node's GLRender method: 00055 | if (cacheList->call(state)) return; 00056 | cacheList->open(state, TRUE); 00057 | ... do normal children stuff... 00058 | cacheList->close(); 00059 | 00060 | In a node's notify method: 00061 | cacheList->invalidateAll(); 00062 | 00063 | Author(s) : Gavin Bell 00064 | 00065 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00066 _______________________________________________________________________ 00067 */ 00068 00069 00070 #ifndef _SO_GL_CACHE_LIST 00071 #define _SO_GL_CACHE_LIST 00072 00073 #include <Inventor/SbBasic.h> 00074 00075 00076 struct SoGLCacheListEntry; 00077 class SoGLRenderAction; 00078 class SoState; 00079 class SoElement; 00080 00081 SoEXTENDER class INVENTOR_API SoGLCacheList { 00082 00083 public: 00085 SoGLCacheList(int numCaches = 2); 00086 00088 ~SoGLCacheList(); 00089 00094 SbBool call(SoGLRenderAction *); 00095 00101 void open(SoGLRenderAction *, SbBool autoCache = TRUE); 00102 00105 void close(SoGLRenderAction *); 00106 00109 void invalidateAll(); 00110 00111 private: 00112 SoGLCacheListEntry *getLRU(); 00113 void setMRU(SoGLCacheListEntry *e); 00114 void setLRU(SoGLCacheListEntry *e); 00115 void blow(SoState *, SoGLCacheListEntry *); 00116 00120 SoGLCacheListEntry *MRU; 00121 int maxCaches, numCaches; 00122 SoGLCacheListEntry *openCache; 00123 int threshold; 00124 00125 00126 00127 int mightBeUsed; 00128 00129 00130 00131 00132 SoElement *invalidElement; 00138 SbBool saveInvalid; 00139 00140 00141 00142 00143 00144 00145 int saveACacheBits; 00146 00147 00148 00149 00150 }; 00151 00152 00153 #endif /* _SO_GL_CACHE_LIST */