Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!sun-barr!olivea!bu.edu!bucrf11.bu.edu!tjh
From: tjh@bucrf11.bu.edu (Tim Hall)
Newsgroups: comp.sys.sgi
Subject: zbuffering and lrectwrite
Message-ID: <76269@bu.edu.bu.edu>
Date: 6 Mar 91 18:58:33 GMT
Sender: news@bu.edu.bu.edu
Reply-To: tjh@bu-pub.bu.edu (Tim Hall)
Followup-To: comp.sys.sgi
Organization: Boston University
Lines: 15

I was suprised to find out (through experience) that lrectwrite
is affected by the zbuffer.  That is when zbuffering is turned
on lrectwrite only paints those pixels have a zvalue less than
(or greater etc.. depending on zfunction) some threshold value.
Actually I'm so suprised that this is the case I wonder if I did
somthing to cause this.  If this is the normal behavior what is
the threshold value?  Anyhow, surrounding the lrectwrite call by
zbuffer FALSE/TRUE commands produced my desired result.

-- 
-Tim Hall
tjh@bu-pub.bu.edu

The night is filled with the cries of dispossessed children in search
of paradise.  -Dead Can Dance