From: "Thomas Harte" <T DOT Harte AT btinternet DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro perspective-correct texture mapping
Date: 16 Mar 1997 10:33:24 GMT
Organization: SoftySoft
Lines: 20
Message-ID: <01bc31f5$7d473b20$4d2449c2@default>
References: <2 DOT 2 DOT 32 DOT 19970316013323 DOT 0076202c AT merlin DOT ebicom DOT net>
NNTP-Posting-Host: host-73-36-77.btinternet.com
To: djgpp AT delorie DOT com
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bas AT merlin DOT ebicom DOT net wrote in article
<2 DOT 2 DOT 32 DOT 19970316013323 DOT 0076202c AT merlin DOT ebicom DOT net>...
> At 03:02 PM 3/15/97 GMT, you wrote:
> Well, I'm not to sure about all this but I do know you can look up and
down
> in Heretic which uses the doom engine
> 
> 
> Bob Sayers
> http://www2.ebicom.net/~bas/
> 

	I believe that uses a 'smudged' perspective, whereby the vertical lines
are moved differently relative to each other, but remain vertical. This
means only limited looking up down can be provided, and that it is at best
un-convincing. Duke Nukem 3d definitely uses this method.

		-Thomas