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What does the number of supported visuals depend on?



Hi!

I am currently porting my program from an SGI to a DEC Ultrix and a
PC Linux system.  The biggest problem (besides byte swapping stuff)
is the number of supported visuals.  On the SGI I can chooes between
lots of different truecolor, directcolor and pseudocolor visuals.
The same on the DEC (with smaller colormaps however :-[ ), but on
my Linux box with XFree running in 16bpp mode I only have _one_
truecolor visual.  If I start X with 8bpp I get some more, but then
the truecolor visuals look really ugly.

So, I am really wondering:
 What does the number of supported visuals depend on?
 And why is there no pseudocolor visual in 16bpp?

Any help or pointer is appreciated!
Thanks in advance,
 Andy.

-- 
 Andy Spiegl, University of Technology, Muenchen, Germany
 E-Mail: Andy@spiegl.de     URL: http://www.spiegl.de
 Finger pgp.andy@spiegl.de for my PGP key
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