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000023_snieves@unlinfo.unl.edu_Sun Nov 27 13:59:21 PST 1994.msg
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Article: 276 of comp.graphics.packages.lightwave
Xref: netcom.com comp.graphics.packages.lightwave:276
Path: netcom.com!ix.netcom.com!howland.reston.ans.net!vixen.cso.uiuc.edu!newsfeed.ksu.ksu.edu!moe.ksu.ksu.edu!news.mid.net!crcnis3.unl.edu!unlinfo.unl.edu!snieves
From: snieves@unlinfo.unl.edu (Raptor)
Newsgroups: comp.graphics.packages.lightwave
Subject: Re: Shadow Mapping
Date: 27 Nov 1994 20:43:20 GMT
Organization: University of Nebraska--Lincoln
Lines: 17
Distribution: na
Message-ID: <3bar18$8im@crcnis3.unl.edu>
References: <CzBrGI.6zK@undergrad.math.uwaterloo.ca> <3aljhi$hh1@news.eecs.uic.edu> <1fcafcbb.1d8eed55@amuc.mtroyal.ab.ca>
NNTP-Posting-Host: unlinfo.unl.edu
> We have tried to use shadow mapping in our animations. However, we
> find that the results are not worth it. The map most often ends up with
> large blocky artifacts.
> Are we missing something? Or is this a fact of life with shadow
> mapping? And how are you getting effective results from it?
I myself, want quality at any cost and would therefore trace
shadows if I need them. However, I havn't been able to achieve
soft-edge shadows with tracing and resort to shadow mapping for this
purpose. I always use shadow mapping at the default map size (512),
and have shadow fuzziness set at 5. This has given me great results,
and have never seen stair-stepping. Perhaps using shadow-fuzziness
blends it away???
-snieves@unlinfo.unl.edu