Panda3D
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00001 // Filename: posixGraphicsStateGuardian.h 00002 // Created by: drose (14Jan12) 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 POSIXGRAPHICSSTATEGUARDIAN_H 00016 #define POSIXGRAPHICSSTATEGUARDIAN_H 00017 00018 #include "pandabase.h" 00019 00020 #include "glgsg.h" 00021 00022 //////////////////////////////////////////////////////////////////// 00023 // Class : PosixGraphicsStateGuardian 00024 // Description : This GSG is used only for CallbackGraphicsWindow 00025 // (which might not be using the glx interfaces), to add 00026 // the ability to peek in libGL.so to find the extension 00027 // functions. 00028 //////////////////////////////////////////////////////////////////// 00029 class PosixGraphicsStateGuardian : public GLGraphicsStateGuardian { 00030 public: 00031 PosixGraphicsStateGuardian(GraphicsEngine *engine, GraphicsPipe *pipe); 00032 ~PosixGraphicsStateGuardian(); 00033 00034 protected: 00035 virtual void *do_get_extension_func(const char *prefix, const char *name); 00036 void *get_system_func(const char *name); 00037 00038 private: 00039 void *_libgl_handle; 00040 00041 public: 00042 static TypeHandle get_class_type() { 00043 return _type_handle; 00044 } 00045 static void init_type() { 00046 GLGraphicsStateGuardian::init_type(); 00047 register_type(_type_handle, "PosixGraphicsStateGuardian", 00048 GLGraphicsStateGuardian::get_class_type()); 00049 } 00050 virtual TypeHandle get_type() const { 00051 return get_class_type(); 00052 } 00053 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00054 00055 private: 00056 static TypeHandle _type_handle; 00057 }; 00058 00059 #include "posixGraphicsStateGuardian.I" 00060 00061 #endif