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From: mikey@eukanuba.wpd.sgi.com (Mike Yang)
Newsgroups: comp.windows.x
Subject: Re: Silicon Graphics X11R4 server and default ColorMap
Keywords: Silicon Graphics, Colormap
Message-ID: <1991Jun12.190204.4598@twilight.wpd.sgi.com>
Date: 12 Jun 91 19:02:04 GMT
References: <598@censun1.UUCP>
Sender: news@twilight.wpd.sgi.com ( CNews Account )
Reply-To: mikey@sgi.com
Organization: Silicon Graphics, Inc.
Lines: 28

In article <598@censun1.UUCP>, tl@censun1.UUCP (SSUID Tin Li) writes:
|> With the X11R4 server from Silicon Graphics, we are able to allocate
|> only sixteen colors using the default Colormap.  Does anyone have
|> similar problem?  Is it a known problem?  Is there a easy work
|> around?

This is not a problem, but a "feature."

Since GL and X programs must share the same hardware colormap, and GL
programs tend to expect that the colormap is populated by certain
colors, the default behavior of the X server is to preallocate all of
the colormap cells except for sixteen of them.  Therefore, GL programs
tend to display in the correct colors while X programs have only
sixteen to play with.

If you run predominately X programs and/or you want your X programs to
display in their true colors at the expense of GL programs, you can
start your X server with the -gl switch which will cause it to only
preallocate sixteen colors.

To make this the default, create a ".xSGINeWS.cmd" file in your home
directory and put this in it:

	/usr/bin/X11/Xsgi -bs -gl -su

-----------------------------------------------------------------------
                 Mike Yang        Silicon Graphics, Inc.
               mikey@sgi.com           415/335-1786