Rob Jenkins (robj++at++quid)
Thu, 5 Dec 1996 08:27:27 -0800
If your Impact only has 1 Meg of TRAM ( texture memory ) then it only supports
16 bit textures so with RGBA you only get 4 bits/component which can cause
banding, run /usr/gfx/gfxinfo on that machine to check the amount of TRAM you
have. You could get 8 bits/component for 2 component textures or it is possible
to disable the use of HW texturing on a 1 TRAM machine, SW texturing won't have
the resolution restriction but **would be slow**:
setenv USE_SOFT_TEXTURE 1
will disable HW texturing - only on 1 TRAM machines though. Obviously just use
unsetenv or set it back to 0 to re-enable. This isn't global, in other words if
you set this in a shell it only effects programs run in that shell afterwards
-if you run the same code in another shell ( without the variable set ) it'll
use HW texturing.
If lack of TRAM is the problem then upgrading to 4 Meg TRAM is the best option,
if you do have 4 M TRAM then let me know....
Cheers
Rob
--
________________________________________________________________
Rob Jenkins mailto:robj++at++csd.sgi.com
Silicon Graphics, Mtn View, California, USA
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