Re: [GtkGLExt] Double Buffered Visual

["Timothy M. Shead" <tshead k-3d com>]

On Mon, 2006-07-17 at 11:11 -0500, Murali Dhanakoti wrote:
> Hi,
> 
> I built and installed gtkglextmm-1.2.0 from sources in ubuntu linux.
> When I attempt to run the program called 'colors'  in the example
> directory I get the following error message
> 
> OpenGL extension version - 1.3
> *** Cannot find the double-buffered visual.
> *** Trying single-buffered visual.
> *** No appropriate OpenGL-capable visual found.
> 
> All the other example programs run just fine. Can somebody tell me
> what is wrong with my OpenGL install. I have this 6200SE nvida
> graphics card. If a glxinfo output would help you guys to diagnose the
> problem better please let me know which part of the glxinfo would be
> useful and I will post it here. 

This particular example demonstrates the difference between true color
and indexed color visuals.  Apparently your X server / hardware doesn't
support indexed visuals, which isn't surprising as they are of little
value with today's hardware.  You can run this example with the "--rgb"
flag to see it use an RGB visual.  We should probably get rid of this
example.

Cheers,
Tim