1
/***********************************************************************
2
filename: CEGUIOpenGLGLXPBTextureTarget.h
3
created: Sat Jan 31 2009
5
*************************************************************************/
6
/***************************************************************************
7
* Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
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:
17
* The above copyright notice and this permission notice shall be
18
* included in all copies or substantial portions of the Software.
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_
33
#include "CEGUIOpenGLTextureTarget.h"
34
#include "../../CEGUIRect.h"
36
// Start of CEGUI namespace section
43
OpenGLGLXPBTextureTarget - allows rendering to an OpenGL texture via the
44
pbuffer provided in GLX 1.3 and above.
46
class OPENGL_GUIRENDERER_API OpenGLGLXPBTextureTarget : public OpenGLTextureTarget
49
OpenGLGLXPBTextureTarget(OpenGLRenderer& owner);
50
virtual ~OpenGLGLXPBTextureTarget();
52
// overrides from OpenGLRenderTarget
55
// implementation of TextureTarget interface
57
void declareRenderSize(const Size& sz);
58
// specialise functions from OpenGLTextureTarget
60
void restoreTexture();
63
//! default size of created texture objects
64
static const float DEFAULT_SIZE;
66
//! Initialise the PBuffer with the needed size
67
void initialisePBuffer();
69
//! Switch rendering so it targets the pbuffer
70
void enablePBuffer() const;
72
//! Switch rendering to target what was active before the pbuffer was used.
73
void disablePBuffer() const;
75
//! Perform basic initialisation of the texture we're going to use.
76
void initialiseTexture();
78
//! Selects an appropriate FB config to use and stores in d_fbconfig.
79
void selectFBConfig();
81
//!Creates the context to use with the pbuffer.
86
//! GLX config used in creating pbuffer
87
GLXFBConfig d_fbconfig;
90
//! The GLX pbuffer we're using.
92
//! stores previous X display when switching to pbuffer
93
mutable Display* d_prevDisplay;
94
//! stores previous GLX drawable when switching to pbuffer
95
mutable GLXDrawable d_prevDrawable;
96
//! stores previous GLX context when switching to pbuffer
97
mutable GLXContext d_prevContext;
100
} // End of CEGUI namespace section
102
#endif // end of guard _CEGUIOpenGLGLXPBTextureTarget_h_