Path: utzoo!attcan!uunet!decwrl!sun-barr!lll-winken!uwm.edu!ogicse!milton!tomw%orac.esd.sgi.com@sgi.com
From: tomw%orac.esd.sgi.com@sgi.com (Tom Weinstein)
Newsgroups: sci.virtual-worlds
Subject: Re: Stereoglasses, active technology
Message-ID: <7655@milton.u.washington.edu>
Date: 16 Sep 90 07:27:14 GMT
References: <7545@milton.u.washington.edu> <7571@milton.u.washington.edu>
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In article <7571@milton.u.washington.edu> dartvax!batcomputer!andyrose@uunet.UU.
NET (Andy Rose) writes:

> For these to be effective you need a computer which can alternate
> between two graphic buffers at rates quicker than 10 times a second.
> 30 times a second is of course great.  This is not to tough for 
> displaying a left eye frame and than a right eye frame of a static
> image.  If you wish to animate, you need to compute a left eye frame
> and a right eye frame and display them at the above rates.  This
> is not easy.  Silicon Graphics, Stardent, RS6000, and other machines
> in this class can barely do it, especially as quantity of polygons
> grows.  

The Personal Iris can barely do it.  Note that the PI is the low end of
our hardware.  The high end can draw 1,000,000 flat shaded polygons per
second, and 100,000 texture mapped polygons per second.  I doubt it
would have any problem drawing reasonably complex scenes at 60Hz.

--
Tom Weinstein
Silicon Graphics, Inc., Entry Systems Division, Window Systems
tomw@orac.esd.sgi.com
Any opinions expressed above are mine, not sgi's.