Panda3D
posixGraphicsStateGuardian.h
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1 /**
2  * PANDA 3D SOFTWARE
3  * Copyright (c) Carnegie Mellon University. All rights reserved.
4  *
5  * All use of this software is subject to the terms of the revised BSD
6  * license. You should have received a copy of this license along
7  * with this source code in a file named "LICENSE."
8  *
9  * @file posixGraphicsStateGuardian.h
10  * @author drose
11  * @date 2012-01-14
12  */
13 
14 #ifndef POSIXGRAPHICSSTATEGUARDIAN_H
15 #define POSIXGRAPHICSSTATEGUARDIAN_H
16 
17 #include "pandabase.h"
18 
19 #include "glgsg.h"
20 
21 /**
22  * This GSG is used only for CallbackGraphicsWindow (which might not be using
23  * the glx interfaces), to add the ability to peek in libGL.so to find the
24  * extension functions.
25  */
26 class PosixGraphicsStateGuardian : public GLGraphicsStateGuardian {
27 public:
30 
31 protected:
32  virtual void *do_get_extension_func(const char *name);
33  void *get_system_func(const char *name);
34 
35 private:
36  void *_libgl_handle;
37 
38 public:
39  static TypeHandle get_class_type() {
40  return _type_handle;
41  }
42  static void init_type() {
43  GLGraphicsStateGuardian::init_type();
44  register_type(_type_handle, "PosixGraphicsStateGuardian",
45  GLGraphicsStateGuardian::get_class_type());
46  }
47  virtual TypeHandle get_type() const {
48  return get_class_type();
49  }
50  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
51 
52 private:
53  static TypeHandle _type_handle;
54 };
55 
57 
58 #endif
This class is the main interface to controlling the render process.
An object to create GraphicsOutputs that share a particular 3-D API.
Definition: graphicsPipe.h:52
This GSG is used only for CallbackGraphicsWindow (which might not be using the glx interfaces),...
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition: register_type.I:22