Question about Double Buffering

Glynn Clements glynn at
Thu Aug 11 23:36:15 PDT 2011

Dyweni - Xorg wrote:

> I am trying to setup my xorg server (1.10.3) to use
> double buffering. I have the Nvidia 9600 video card and am using the
> proprietary nvidia driver. 
> When I run glxinfo, I see 'None' and
> 'Ncons' in the right most column. I do not see any entry with a 'P' (to
> indicate support for OpenGL pixel buffers). 
> I have the 'DBE' module
> being loaded (xorg.0.log confirms that it loads).  

OpenGL pixel buffers (pbuffers), OpenGL double-buffering, and the DBE
extension are all unrelated to each other.

Support for pixel buffers is indicated by the presence of
GLX_SGIX_pbuffer in the extension list. Whether a GLX visual is
double-buffered is indicated by the "db" column in the glxinfo output.

Glynn Clements <glynn at>

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