Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!munnari.oz.au!uunet!dg!raphael!jorge
From: jorge@raphael.dg.com (Jorge Lach)
Newsgroups: comp.benchmarks
Subject: Re: Truth or Dare?
Message-ID: <1318@dg.dg.com>
Date: 1 Apr 91 15:33:33 GMT
References: <1991Mar27.174104.26867@hellgate.utah.edu> <1991Mar29.005630.22949@odin.corp.sgi.com>
Sender: root@dg.dg.com
Reply-To: jorge@raphael.dg.com (Jorge Lach)
Distribution: comp
Organization: Data General Corporation, Westborough, MA.
Lines: 36

In article <1991Mar29.005630.22949@odin.corp.sgi.com>, bruceh@sgi.com (Bruce R. Holloway) writes:
|> In article <1991Mar27.174104.26867@hellgate.utah.edu> thomson@cs.utah.edu (Rich Thomson) writes:
|> >Several times on comp.graphics the SGI folks have offered up the
|> >famous "1 million polygons/second" quotation from marketing literature
|> >when referring to peak performance on the VGX series of machines.
|> >
|> >The polygons in question are 50 pixel triangle strips that are flat
|> >shaded.  Also, they may have rendered them without the Z buffer turned
|> >on (the spec sheet is away from me at the moment).
|> >...
|> >So: is this a "theoretical" number, or is it attainable by a program,
|> >no matter how contorted?
|> 
|> We have a suite of performance measurement programs which allow lots of
|> primitives with different characteristics to be tried.  I ran a certain
|> case and got the following output:
|> 
|> * Mesh, DisplayList, Subpixel, RGBmode, Flat, Area = 50.000000, PYM_FILL, MeshesPerSecond = 886681
|> ...
|> * Mesh, DisplayList, Subpixel, RGBmode, Flat, Area = 40.500000, PYM_FILL, MeshesPerSecond = 1022706
|> 


And what would the performance be in shading modes other than flat?
Also, what kind of light modelling is being applied to the polygons
in question?



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jorge@dg.dg.com		Technical Systems Division
Jorge Lach		Data General Corp., Westboro, Massachusetts

	"I speak only for myself, not for my company; in fact, my
	 company does not speak, and it is not really mine..."