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diff --git a/nx-X11/extras/Mesa/docs/pbuffers.html b/nx-X11/extras/Mesa/docs/pbuffers.html new file mode 100644 index 000000000..259910155 --- /dev/null +++ b/nx-X11/extras/Mesa/docs/pbuffers.html @@ -0,0 +1,54 @@ +<HTML> + +<TITLE>PBuffer Rendering</TITLE> + +<link rel="stylesheet" type="text/css" href="mesa.css"></head> + +<BODY> + +<H1>PBuffer Rendering</H1> + +<p> +Basically, FBconfigs and PBuffers allow you to do off-screen rendering +with OpenGL. The OSMesa interface does basically the same thing, but +fbconfigs and pbuffers are supported by more vendors. +PBuffer rendering may also be hardware accelerated. +</p> + +<p> +PBuffers are getting more use nowadays, though they've actually been +around for a long time on IRIX systems and other workstations. +</p> + +<p> +The +<a href="http://oss.sgi.com/projects/ogl-sample/registry/SGIX/fbconfig.txt" +target="_parent">GL_SGIX_fbconfig</a> +and +<a href="http://oss.sgi.com/projects/ogl-sample/registry/SGIX/pbuffer.txt" +target="_parent"> +GL_SGIX_pbuffer</a> extensions describe the functionality. +More recently, these extensions have been promoted to ARB extensions (on +Windows at least). +</p> + +<p> +The Mesa/progs/xdemos/ directory has some useful code for working +with pbuffers: +</p> + +<ul> +<li><b>pbinfo.c</b> - like glxinfo, it prints a list of available + fbconfigs and whether each supports pbuffers. +<li><b>pbutil.c</b> - a few utility functions for dealing with + fbconfigs and pbuffers. +<li><b>pbdemo.c</b> - a demonstration of off-screen rendering with pbuffers. +</ul> + +<p> +Mesa 4.1 and later support GL_SGIX_fbconfig and GL_SGIX_pbuffer (software +rendering only). +</p> + +</BODY> +</HTML> |