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000026_icon-group-sender _Tue Jul 15 15:25:23 1997.msg
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Received: from kingfisher.CS.Arizona.EDU by cheltenham.cs.arizona.edu; Fri, 18 Jul 1997 15:08:19 MST
Received: by kingfisher.CS.Arizona.EDU (5.65v4.0/1.1.8.2/08Nov94-0446PM)
id AA05665; Fri, 18 Jul 1997 15:08:18 -0700
Date: Tue, 15 Jul 1997 15:25:23 -0500
Message-Id: <199707152025.PAA22485@segfault.cs.utsa.edu>
From: Clinton Jeffery <jeffery@segfault.cs.utsa.edu>
To: espie@triere.ens.fr
Cc: icon-group@cs.arizona.edu
In-Reply-To: <5qe1ao$9pg$1@nef.ens.fr> (espie@triere.ens.fr)
Subject: Icon graphics on 16-color machines
Reply-To: jeffery@cs.utsa.edu
Errors-To: icon-group-errors@cs.arizona.edu
Status: RO
[Marc Espie wrote:]
> my X display is rather peculiar: I only have 4 color
> planes, for a grand total of 16 possibly different colors. Most icon color
> programs tend to allocate more than 16 colors, and so fail abysmally...
> other programs such as the pure amiga port of Ghostscript manage to produce
> awesome color graphics with the same limitations.
There used to be lots of platforms with 16 colors; now they are rare. Some
window systems automatically dither colors on such platforms, but X Window
servers generally do not. Icon's implementation does not presently do
dithering other than when the window system automatically does it for us.
Marc, if you want to put code that adds dithering into either of the Amiga
(X Window or Intuition) Icon implementations, that would be great. :-)
Clint Jeffery, jeffery@cs.utsa.edu
Division of Computer Science, The University of Texas at San Antonio
Research http://www.cs.utsa.edu/research/plss.html