Crazy Eddies GUI System  0.7.2
CEGUIOpenGLApplePBTextureTarget.h
1 /***********************************************************************
2  filename: CEGUIOpenGLApplePBTextureTarget.h
3  created: Sun Feb 1 2009
4  author: Paul D Turner
5 *************************************************************************/
6 /***************************************************************************
7  * Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
8  *
9  * Permission is hereby granted, free of charge, to any person obtaining
10  * a copy of this software and associated documentation files (the
11  * "Software"), to deal in the Software without restriction, including
12  * without limitation the rights to use, copy, modify, merge, publish,
13  * distribute, sublicense, and/or sell copies of the Software, and to
14  * permit persons to whom the Software is furnished to do so, subject to
15  * the following conditions:
16  *
17  * The above copyright notice and this permission notice shall be
18  * included in all copies or substantial portions of the Software.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
23  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26  * OTHER DEALINGS IN THE SOFTWARE.
27  ***************************************************************************/
28 #ifndef _CEGUIOpenGLApplePBTextureTarget_h_
29 #define _CEGUIOpenGLApplePBTextureTarget_h_
30 
31 #include <OpenGL/OpenGL.h>
32 #include "CEGUIOpenGLTextureTarget.h"
33 #include "../../CEGUIRect.h"
34 
35 // Start of CEGUI namespace section
36 namespace CEGUI
37 {
38 class OpenGLTexture;
39 
46 {
47 public:
49  virtual ~OpenGLApplePBTextureTarget();
50 
51  // overrides from OpenGLRenderTarget
52  void activate();
53  void deactivate();
54  // implementation of TextureTarget interface
55  void clear();
56  void declareRenderSize(const Size& sz);
57  // specialise functions from OpenGLTextureTarget
58  void grabTexture();
59  void restoreTexture();
60 
61 protected:
63  static const float DEFAULT_SIZE;
64 
66  void initialiseTexture();
67 
69  void enablePBuffer() const;
70 
72  void disablePBuffer() const;
73 
75  CGLPBufferObj d_pbuffer;
77  CGLContextObj d_context;
79  GLint d_screen;
81  mutable CGLContextObj d_prevContext;
82 };
83 
84 } // End of CEGUI namespace section
85 
86 #endif // end of guard _CEGUIOpenGLApplePBTextureTarget_h_