Panda3D
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00001 // Filename: textureStagePool.h 00002 // Created by: drose (03May10) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef TEXTURESTAGEPOOL_H 00016 #define TEXTURESTAGEPOOL_H 00017 00018 #include "pandabase.h" 00019 #include "textureStage.h" 00020 #include "pointerTo.h" 00021 #include "pmutex.h" 00022 #include "pset.h" 00023 00024 //////////////////////////////////////////////////////////////////// 00025 // Class : TextureStagePool 00026 // Description : The TextureStagePool (there is only one in the universe) 00027 // serves to unify different pointers to the same 00028 // TextureStage, mainly to help developers use a common 00029 // pointer to access things that are loaded from 00030 // different model files. 00031 // 00032 // It runs in one of three different modes, according to 00033 // set_mode(). See that method for more information. 00034 //////////////////////////////////////////////////////////////////// 00035 class EXPCL_PANDA_GOBJ TextureStagePool { 00036 PUBLISHED: 00037 enum Mode { 00038 M_none, 00039 M_name, 00040 M_unique, 00041 }; 00042 00043 INLINE static TextureStage *get_stage(TextureStage *temp); 00044 INLINE static void release_stage(TextureStage *temp); 00045 INLINE static void release_all_stages(); 00046 00047 INLINE static void set_mode(Mode mode); 00048 INLINE static Mode get_mode(); 00049 00050 INLINE static int garbage_collect(); 00051 INLINE static void list_contents(ostream &out); 00052 static void write(ostream &out); 00053 00054 private: 00055 TextureStagePool(); 00056 00057 TextureStage *ns_get_stage(TextureStage *temp); 00058 void ns_release_stage(TextureStage *temp); 00059 void ns_release_all_stages(); 00060 00061 void ns_set_mode(Mode mode); 00062 Mode ns_get_mode(); 00063 00064 int ns_garbage_collect(); 00065 void ns_list_contents(ostream &out) const; 00066 00067 static TextureStagePool *get_global_ptr(); 00068 00069 static TextureStagePool *_global_ptr; 00070 00071 Mutex _lock; 00072 00073 // We store a map of CPT(TextureStage) to PT(TextureStage). These are two 00074 // equivalent structures, but different pointers. The first pointer 00075 // never leaves this class. If the second pointer changes value, 00076 // we'll notice it and return a new one. 00077 typedef pmap<CPT(TextureStage), PT(TextureStage), indirect_compare_to<const TextureStage *> > StagesByProperties; 00078 StagesByProperties _stages_by_properties; 00079 00080 typedef pmap<string, PT(TextureStage) > StagesByName; 00081 StagesByName _stages_by_name; 00082 00083 Mode _mode; 00084 }; 00085 00086 EXPCL_PANDA_GOBJ ostream &operator << (ostream &out, TextureStagePool::Mode mode); 00087 EXPCL_PANDA_GOBJ istream &operator >> (istream &in, TextureStagePool::Mode &mode); 00088 00089 #include "textureStagePool.I" 00090 00091 #endif 00092 00093