Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!usc!snorkelwacker!bloom-beacon!EXPO.LCS.MIT.EDU!keith
From: keith@EXPO.LCS.MIT.EDU (Keith Packard)
Newsgroups: comp.windows.x
Subject: Re: What's XDrawLines doing to me, anyway?
Message-ID: <9002100221.AA01604@expire.lcs.mit.edu>
Date: 10 Feb 90 02:21:37 GMT
References: <1544@husc6.harvard.edu>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 18


> X11R3, sun3, sun4:

> Is there a problem (feature?) in XDrawLines that causes it to only
> draw a few of the data points and then happily return, claiming it has
> drawn them all?  I'm talking on the order of a thousand.

There was a bug in R3 servers for wide lines which would terminate the
DrawLines request at the first pair of coincedent points.  If you were
drawing zero width lines, then I don't know  off-hand what would cause the
troubles you were seeing.

In any case, R4 servers draw lines much faster than R3 servers, especially wide
lines or zero width lines in color (which are now substantially faster than
monochrome).

Keith Packard
MIT X Consortium