3 <TITLE>PBuffer Rendering
</TITLE>
5 <BODY text=
"#000000" bgcolor=
"#55bbff" link=
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7 <H1>PBuffer Rendering
</H1>
10 Basically, FBconfigs and PBuffers allow you to do off-screen rendering
11 with OpenGL. The OSMesa interface does basically the same thing, but
12 fbconfigs and pbuffers are supported by more vendors.
16 PBuffers are getting more use nowadays, though they've actually been
17 around for a long time on IRIX systems and other workstations.
22 <a href=
"http://oss.sgi.com/projects/ogl-sample/registry/SGIX/fbconfig.txt"
23 target=
"_parent">GL_SGIX_fbconfig
</a>
25 <a href=
"http://oss.sgi.com/projects/ogl-sample/registry/SGIX/pbuffer.txt"
27 GL_SGIX_pbuffer
</a> extensions describe the functionality.
28 More recently, these extensions have been promoted to ARB extensions (on
33 The Mesa/progs/xdemos/ directory has some useful code for working
38 <li><b>pbinfo.c
</b> - like glxinfo, it prints a list of available
39 fbconfigs and whether each supports pbuffers.
40 <li><b>pbutil.c
</b> - a few utility functions for dealing with
41 fbconfigs and pbuffers.
42 <li><b>pbdemo.c
</b> - a demonstration of off-screen rendering with pbuffers.
46 Mesa
4.1 and later support GL_SGIX_fbconfig and GL_SGIX_pbuffer (software