Re: Any tips for using GLUT

["Blake L. Carlson" <blake-carlson uiowa edu>]

I've been playing with the Mesa demos and they seem to be working okay. 
I tried going to 32 bit display depth and that didn't change anything. 
24-bit crashed my graphics adapter.

Here's the error -
GLUT: Fatal Error in (unamed): visual with necessary capabilities not
found.

What if my program is trying to use double-buffered display for images? 
I think I may be requesting a quality of service from Mesa/graphics
system (??) which isn't supported.  I'll try removing the double
buffering.  If that's not it, it's gotta be the colormap.

- Blake

wsb@paralleldata.com wrote:
> 
> "Champigny, Michael" wrote:
> >
> > I've seen this "bug" appear on Tru64 UNIX so it's not Linux
> > specific. It usually happens when the colormap is being maxed
> > out. I don't remember how I fixed it...sorry I can't be more
> > specific, but at least you know your not alone. :-) By the
> > way, it also happens on NT but the colormap there seems to
> > go further.
> >
> 
> What the code is telling you is that you need more Bits Per Pixel.
> If you're running 8 bit, try 16 bit. If you're already at 16 bit,
> try 24 or 32 bit if you have the card memory to support it and you
> defined it in your XF86Config file.
> 
> This isn't Alpha specific, it's an X thing.
> 
> >
> > While I have your attention, I'll ask if anyone has had any trouble
> > getting GLUT to work.  I have a program that uses GLUT and works great
> > on the SGI's.  Everything compiles okay on the alphalinux machine, but
> > when I execute the program GLUT complains that the visual class is not
> > sufficient (or some error similar).  Do I need to tweak X in some way to
> > get this to work??
> >
> 
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