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WGLPBTextureTarget.h
1 /***********************************************************************
2  filename: CEGUIOpenGLWGLPBTextureTarget.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 _CEGUIOpenGLWGLPBTextureTarget_h_
29 #define _CEGUIOpenGLWGLPBTextureTarget_h_
30 
31 //#include <windows.h>
32 #include <GL/glew.h>
33 #include <GL/wglew.h>
34 
35 #include "CEGUI/RendererModules/OpenGL/TextureTarget.h"
36 #include "../../Rect.h"
37 
38 #if defined(_MSC_VER)
39 # pragma warning(push)
40 # pragma warning(disable : 4250)
41 #endif
42 
43 // Start of CEGUI namespace section
44 namespace CEGUI
45 {
46 class OpenGLTexture;
47 
53 class OPENGL_GUIRENDERER_API OpenGLWGLPBTextureTarget : public OpenGLTextureTarget
54 {
55 public:
56  OpenGLWGLPBTextureTarget(OpenGLRendererBase& owner);
57  virtual ~OpenGLWGLPBTextureTarget();
58 
59  // overrides from OpenGLRenderTarget
60  void activate();
61  void deactivate();
62  // implementation of TextureTarget interface
63  void clear();
64  void declareRenderSize(const Sizef& sz);
65  // specialise functions from OpenGLTextureTarget
66  void grabTexture();
67  void restoreTexture();
68 
69 protected:
71  static const float DEFAULT_SIZE;
72 
74  void initialisePBuffer();
75 
77  void releasePBuffer();
78 
80  void enablePBuffer() const;
81 
83  void disablePBuffer() const;
84 
86  void initialiseTexture();
87 
89  int d_pixfmt;
91  HPBUFFERARB d_pbuffer;
93  HGLRC d_context;
95  HDC d_hdc;
97  mutable HGLRC d_prevContext;
99  mutable HDC d_prevDC;
100 };
101 
102 } // End of CEGUI namespace section
103 
104 #if defined(_MSC_VER)
105 # pragma warning(pop)
106 #endif
107 
108 #endif // end of guard _CEGUIOpenGLWGLPBTextureTarget_h_