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WGLPBTextureTarget.h
1 /***********************************************************************
2  created: Sun Feb 1 2009
3  author: Paul D Turner
4 *************************************************************************/
5 /***************************************************************************
6  * Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining
9  * a copy of this software and associated documentation files (the
10  * "Software"), to deal in the Software without restriction, including
11  * without limitation the rights to use, copy, modify, merge, publish,
12  * distribute, sublicense, and/or sell copies of the Software, and to
13  * permit persons to whom the Software is furnished to do so, subject to
14  * the following conditions:
15  *
16  * The above copyright notice and this permission notice shall be
17  * included in all copies or substantial portions of the Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25  * OTHER DEALINGS IN THE SOFTWARE.
26  ***************************************************************************/
27 #ifndef _CEGUIOpenGLWGLPBTextureTarget_h_
28 #define _CEGUIOpenGLWGLPBTextureTarget_h_
29 
30 //#include <windows.h>
31 #include <GL/glew.h>
32 #include <GL/wglew.h>
33 
34 #include "CEGUI/RendererModules/OpenGL/TextureTarget.h"
35 #include "../../Rect.h"
36 
37 #if defined(_MSC_VER)
38 # pragma warning(push)
39 # pragma warning(disable : 4250)
40 #endif
41 
42 // Start of CEGUI namespace section
43 namespace CEGUI
44 {
45 class OpenGLTexture;
46 
52 class OPENGL_GUIRENDERER_API OpenGLWGLPBTextureTarget : public OpenGLTextureTarget
53 {
54 public:
55  OpenGLWGLPBTextureTarget(OpenGLRendererBase& owner);
56  virtual ~OpenGLWGLPBTextureTarget();
57 
58  // overrides from OpenGLRenderTarget
59  void activate();
60  void deactivate();
61  // implementation of TextureTarget interface
62  void clear();
63  void declareRenderSize(const Sizef& sz);
64  // specialise functions from OpenGLTextureTarget
65  void grabTexture();
66  void restoreTexture();
67 
68 protected:
70  static const float DEFAULT_SIZE;
71 
73  void initialisePBuffer();
74 
76  void releasePBuffer();
77 
79  void enablePBuffer() const;
80 
82  void disablePBuffer() const;
83 
85  void initialiseTexture();
86 
88  int d_pixfmt;
90  HPBUFFERARB d_pbuffer;
92  HGLRC d_context;
94  HDC d_hdc;
96  mutable HGLRC d_prevContext;
98  mutable HDC d_prevDC;
99 };
100 
101 } // End of CEGUI namespace section
102 
103 #if defined(_MSC_VER)
104 # pragma warning(pop)
105 #endif
106 
107 #endif // end of guard _CEGUIOpenGLWGLPBTextureTarget_h_