openscenegraph
PixelBufferX11
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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version. The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * OpenSceneGraph Public License for more details.
12*/
13
14/* Note, elements of PixelBufferX11 have used Prodcer/RenderSurface_X11.cpp as both
15 * a guide to use of X11/GLX and copiying directly in the case of setBorder().
16 * These elements are license under OSGPL as above, with Copyright (C) 2001-2004 Don Burns.
17 */
18
19#ifndef OSGVIEWER_PIXELBUFFERX11
20#define OSGVIEWER_PIXELBUFFERX11 1
21
22#include <osg/GraphicsContext>
23#include <osgViewer/api/X11/GraphicsHandleX11>
24
25namespace osgViewer
26{
27
28class OSGVIEWER_EXPORT PixelBufferX11 : public osg::GraphicsContext, public osgViewer::GraphicsHandleX11
29{
30 public:
31
32 PixelBufferX11(osg::GraphicsContext::Traits* traits);
33
34 virtual bool isSameKindAs(const Object* object) const { return dynamic_cast<const PixelBufferX11*>(object)!=0; }
35 virtual const char* libraryName() const { return "osgViewer"; }
36 virtual const char* className() const { return "PixelBufferX11"; }
37
38 virtual bool valid() const { return _valid; }
39
40 /** Realise the GraphicsContext.*/
41 virtual bool realizeImplementation();
42
43 /** Return true if the graphics context has been realised and is ready to use.*/
44 virtual bool isRealizedImplementation() const { return _realized; }
45
46 /** Close the graphics context.*/
47 virtual void closeImplementation();
48
49 /** Make this graphics context current.*/
50 virtual bool makeCurrentImplementation();
51
52 /** Make this graphics context current with specified read context implementation. */
53 virtual bool makeContextCurrentImplementation(osg::GraphicsContext* readContext);
54
55 /** Release the graphics context.*/
56 virtual bool releaseContextImplementation();
57
58 /** Bind the graphics context to associated texture implementation.*/
59 virtual void bindPBufferToTextureImplementation(GLenum buffer);
60
61 /** Swap the front and back buffers.*/
62 virtual void swapBuffersImplementation();
63
64 public:
65
66 // X11 specific aces functions
67
68 Pbuffer& getPbuffer() { return _pbuffer; }
69
70 protected:
71
72 ~PixelBufferX11();
73
74 bool createVisualInfo();
75
76 void init();
77
78 bool _valid;
79 Pbuffer _pbuffer;
80 XVisualInfo* _visualInfo;
81
82 bool _initialized;
83 bool _realized;
84
85 bool _useGLX1_3;
86 bool _useSGIX;
87
88#ifdef GLX_SGIX_pbuffer
89 typedef Pbuffer ( *GLXCreateGLXPbufferSGIX_FuncPtr) (Display *dpy, GLXFBConfig config, unsigned int, unsigned height, int* attrib_list);
90 typedef void ( *GLXDestroyGLXPbufferSGIX_FuncPtr) (Display *dpy, Pbuffer pbuf);
91 typedef int ( *GLXQueryGLXPbufferSGIX_FuncCPtr) (Display *dpy, Pbuffer pbuf, int attribute, unsigned int *value);
92 typedef GLXFBConfig ( *GLXGetFBConfigFromVisualSGIX_FuncPtr) (Display *dpy, XVisualInfo *vis);
93
94 GLXCreateGLXPbufferSGIX_FuncPtr _glXCreateGLXPbufferSGIX;
95 GLXDestroyGLXPbufferSGIX_FuncPtr _glXDestroyGLXPbufferSGIX;
96 GLXQueryGLXPbufferSGIX_FuncCPtr _glXQueryGLXPbufferSGIX;
97 GLXGetFBConfigFromVisualSGIX_FuncPtr _glXGetFBConfigFromVisualSGIX;
98#endif
99};
100
101}
102
103#endif