Crazy Eddie's GUI System  0.8.7
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 "CEGUI/RendererModules/OpenGL/GL.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:
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();
67 
68 protected:
70  static const float DEFAULT_SIZE;
71 
74 
77 
79  void enablePBuffer() const;
80 
82  void disablePBuffer() const;
83 
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_
CEGUI::OpenGLWGLPBTextureTarget
OpenGLWGLPBTextureTarget - allows rendering to an OpenGL texture via the pbuffer WGL extension.
Definition: WGLPBTextureTarget.h:53
CEGUI::OpenGLWGLPBTextureTarget::initialisePBuffer
void initialisePBuffer()
Initialise the PBuffer with the needed size.
CEGUI::OpenGLWGLPBTextureTarget::d_context
HGLRC d_context
Handle to the rendering context for the pbuffer.
Definition: WGLPBTextureTarget.h:92
CEGUI::OpenGLWGLPBTextureTarget::releasePBuffer
void releasePBuffer()
Cleans up the pbuffer resources.
CEGUI::OpenGLWGLPBTextureTarget::DEFAULT_SIZE
static const float DEFAULT_SIZE
default size of created texture objects
Definition: WGLPBTextureTarget.h:70
CEGUI::OpenGLWGLPBTextureTarget::d_prevContext
HGLRC d_prevContext
Handle to the rendering context in use when we switched to the pbuffer.
Definition: WGLPBTextureTarget.h:96
CEGUI::OpenGLWGLPBTextureTarget::activate
void activate()
Activate the render target and put it in a state ready to be drawn to.
CEGUI
Main namespace for Crazy Eddie's GUI Library.
Definition: arch_overview.dox:1
CEGUI::OpenGLWGLPBTextureTarget::declareRenderSize
void declareRenderSize(const Sizef &sz)
Used to declare to the TextureTarget the largest size, in pixels, of the next set of incoming renderi...
CEGUI::OpenGLWGLPBTextureTarget::disablePBuffer
void disablePBuffer() const
Switch rendering to target what was active before the pbuffer was used.
CEGUI::OpenGLWGLPBTextureTarget::d_pixfmt
int d_pixfmt
Holds the pixel format we use when creating the pbuffer.
Definition: WGLPBTextureTarget.h:88
CEGUI::OpenGLTextureTarget
OpenGLTextureTarget - Common base class for all OpenGL render targets based on some form of RTT suppo...
Definition: RendererModules/OpenGL/TextureTarget.h:47
CEGUI::OpenGLWGLPBTextureTarget::initialiseTexture
void initialiseTexture()
Perform basic initialisation of the texture we're going to use.
CEGUI::OpenGLWGLPBTextureTarget::d_prevDC
HDC d_prevDC
Handle to the device context in use when we switched to the pbuffer.
Definition: WGLPBTextureTarget.h:98
CEGUI::OpenGLWGLPBTextureTarget::enablePBuffer
void enablePBuffer() const
Switch rendering so it targets the pbuffer.
CEGUI::OpenGLWGLPBTextureTarget::d_pbuffer
HPBUFFERARB d_pbuffer
Handle to the pbuffer itself.
Definition: WGLPBTextureTarget.h:90
CEGUI::OpenGLWGLPBTextureTarget::clear
void clear()
Clear the surface of the underlying texture.
CEGUI::OpenGLWGLPBTextureTarget::d_hdc
HDC d_hdc
Handle to the Windows device context for the pbuffer.
Definition: WGLPBTextureTarget.h:94
CEGUI::OpenGLWGLPBTextureTarget::grabTexture
void grabTexture()
Grab the texture to a local buffer.
CEGUI::Size< float >
CEGUI::OpenGLRendererBase
Common base class used for other OpenGL (desktop or ES) based renderer modules.
Definition: RendererBase.h:54
CEGUI::OpenGLWGLPBTextureTarget::deactivate
void deactivate()
Deactivate the render target after having completed rendering.
CEGUI::OpenGLWGLPBTextureTarget::restoreTexture
void restoreTexture()
Restore the texture from the locally buffered copy previously create by a call to grabTexture.