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CEGUIOpenGLGLXPBTextureTarget.h
1 /***********************************************************************
2  filename: CEGUIOpenGLGLXPBTextureTarget.h
3  created: Sat Jan 31 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 _CEGUIOpenGLGLXPBTextureTarget_h_
29 #define _CEGUIOpenGLGLXPBTextureTarget_h_
30 
31 #include <GL/glxew.h>
32 
33 #include "CEGUIOpenGLTextureTarget.h"
34 #include "../../CEGUIRect.h"
35 
36 // Start of CEGUI namespace section
37 namespace CEGUI
38 {
39 class OpenGLTexture;
40 
46 class OPENGL_GUIRENDERER_API OpenGLGLXPBTextureTarget : public OpenGLTextureTarget
47 {
48 public:
50  virtual ~OpenGLGLXPBTextureTarget();
51 
52  // overrides from OpenGLRenderTarget
53  void activate();
54  void deactivate();
55  // implementation of TextureTarget interface
56  void clear();
57  void declareRenderSize(const Size& sz);
58  // specialise functions from OpenGLTextureTarget
59  void grabTexture();
60  void restoreTexture();
61 
62 protected:
64  static const float DEFAULT_SIZE;
65 
67  void initialisePBuffer();
68 
70  void enablePBuffer() const;
71 
73  void disablePBuffer() const;
74 
76  void initialiseTexture();
77 
79  void selectFBConfig();
80 
82  void createContext();
83 
85  Display* d_dpy;
87  GLXFBConfig d_fbconfig;
89  GLXContext d_context;
91  GLXPbuffer d_pbuffer;
93  mutable Display* d_prevDisplay;
95  mutable GLXDrawable d_prevDrawable;
97  mutable GLXContext d_prevContext;
98 };
99 
100 } // End of CEGUI namespace section
101 
102 #endif // end of guard _CEGUIOpenGLGLXPBTextureTarget_h_
OpenGLGLXPBTextureTarget - allows rendering to an OpenGL texture via the pbuffer provided in GLX 1...
Definition: CEGUIOpenGLGLXPBTextureTarget.h:46
GLXContext d_prevContext
stores previous GLX context when switching to pbuffer
Definition: CEGUIOpenGLGLXPBTextureTarget.h:97
GLXPbuffer d_pbuffer
The GLX pbuffer we&#39;re using.
Definition: CEGUIOpenGLGLXPBTextureTarget.h:91
Class that holds the size (width &amp; height) of something.
Definition: CEGUISize.h:43
GLXContext d_context
GLX context.
Definition: CEGUIOpenGLGLXPBTextureTarget.h:89
Display * d_dpy
X server display.
Definition: CEGUIOpenGLGLXPBTextureTarget.h:85
GLXFBConfig d_fbconfig
GLX config used in creating pbuffer.
Definition: CEGUIOpenGLGLXPBTextureTarget.h:87
Renderer class to interface with OpenGL.
Definition: CEGUIOpenGLRenderer.h:66
OpenGLTextureTarget - Common base class for all OpenGL render targets based on some form of RTT suppo...
Definition: CEGUIOpenGLTextureTarget.h:42
static const float DEFAULT_SIZE
default size of created texture objects
Definition: CEGUIOpenGLGLXPBTextureTarget.h:64
Display * d_prevDisplay
stores previous X display when switching to pbuffer
Definition: CEGUIOpenGLGLXPBTextureTarget.h:93
GLXDrawable d_prevDrawable
stores previous GLX drawable when switching to pbuffer
Definition: CEGUIOpenGLGLXPBTextureTarget.h:95