Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cwjcc!tut.cis.ohio-state.edu!cs.utexas.edu!ut-emx!mic
From: mic@ut-emx.UUCP (Mic (... K[a-z]+) Kaczmarczik)
Newsgroups: comp.windows.x
Subject: Re: TeXX and X11r3 protocol error on colour SUNs (/dev/cgfour0)
Summary: TeXX doesn't check depth of screen when creating pixmaps
Message-ID: <10202@ut-emx.UUCP>
Date: 5 Feb 89 03:50:36 GMT
References: <574@tivax.turing.ac.uk>
Reply-To: mic@emx.utexas.edu (Mic Kaczmarczik)
Organization: UT Austin Computation Center, User Services Unix Support Group
Lines: 24

In article <574@tivax.turing.ac.uk> russell@turing.ac.uk (Russell Ritchie ) writes:
>We are using SUN machines (3/60, 3/110, 3/160) and cannot get TeXX to
>work on colour displays (/dev/cgfour0). It fails with a protocol
>error, viz: 

I think the protocol error occurs because TeXX doesn't open its
paste-up pixmaps with the right depth (it always uses 1 regardless of
the depth of the screen). 

At least, I think this because when I changed the 2 calls to
XCreatePixmap() in contrib/clients/texx/previewers/texx.c to use
	DisplayPlanes(DISP, DefaultScreen)
	
instead of 1, it then worked on a Sun-4 with a CG3 running the
distribution cfb server.  I don't know enough about X 11 to be sure
that this is the proper way to determine the particular depth texx
needs here, but it seems to work ok in practice. 


-- 
Mic Kaczmarczik			If you drink, don't drill.
UT Austin Computation Center			-- Matt Groening
mic@emx.utexas.edu	
MIC@UTAIVC.BITNET