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From: bruceh@brushwud.asd.sgi.com (Bruce R. Holloway)
Newsgroups: comp.sys.sgi
Subject: Re: clipping problems
Message-ID: <62065@sgi.sgi.com>
Date: 11 Jun 90 19:01:17 GMT
References: <9006091746.AA11156@cs2.cs.wsu.edu>
Sender: bruceh@brushwud.asd.sgi.com
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 20

In article <9006091746.AA11156@cs2.cs.wsu.edu>, dfrank@CS2.CS.WSU.EDU ("Duane D. Frank") writes:
> 
> I'm new to this list, and perhaps this has been discussed before, but in 
> any event I have a question about some clipping problems I have encountered.
> Currently, we have a three year old 4D-60T (thought I believe it was 
> updated to a 4D-70) and on this particular machine, it does not have the
> capability to clip shaded polygons when using lighting models and so 
> forth.  A page from the users manual mentions this problem.
> ...
> My question is this:  On any of the newer or more powerful machines has
> this problem been corrected?  I had heard that this problem had been 
> fixed on the Personal Iris, but I have not had an opportunity to test
> this.

To my knowledge, this problem only occurs on the 4D/50,60,70 machines
with the original graphics subsystem that came with the 4D series.

Systems with PI, GT, & VGX graphics interpolate colors when clipping.

Regards, bruceh