Path: utzoo!attcan!uunet!lll-winken!csd4.milw.wisc.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: phill%MED-IMAGE.COMPSCI.BRISTOL.AC.UK@cunyvm.cuny.edu
Newsgroups: comp.sys.sun
Subject: Re: Pixrect help
Message-ID: <8902181327.aa02255@kukini.CompSci.Bristol.ac.uk>
Date: 1 Mar 89 20:03:32 GMT
Sender: usenet@rice.edu
Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
Original-Date: Sat, 18 Feb 89 13:23:49 GMT
X-Sun-Spots-Digest: Volume 7, Issue 176, message 7 of 12

> I having trouble writing pixels on the screen from an unsigned char array.
> pw_put works but is INCREDIBLY SLOW.  I'm on a sun 4/260 Version 4.0.
> Color Display.

Are you using locking/batching - the appropriate one of these (which one
depends on whether you are using retained or non-retained pixrects) causes
*dramatic* speed increases. See pw_lock() & pw_batch_on()/pw_batch_off()
in SunView Programmers' Guide.

Phill Everson
Medical Imaging
Dept Comp Sci
University of Bristol, UK