From:	Thomas Harte <T DOT Harte AT btinternet DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: PTEX polygon mapping - how are u/v coordinates written?
Date:	Sun, 05 Sep 1999 14:38:53 +0100
Organization:	BT Internet
Lines:	10
Message-ID:	<37D2726D.C0D84AA5@btinternet.com>
References:	<7qtr2g$ng4$1 AT cubacola DOT tninet DOT se>
NNTP-Posting-Host:	host5-171-235-135.btinternet.com
Mime-Version:	1.0
X-Mailer:	Mozilla 4.6 [en-gb] (Win95; I)
X-Accept-Language:	en-GB,en,en-*
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

> However, the texture mapping just gives weird results. Does anyone have any
> clue as to why this? Could it be that I am missing some requirement put upon
> the declaration of u and v coordinates?

	As far as I remember, PTEX differs in Allergo from ATEX in that for each
vertice, you must pass a V3d with z correct as well as x, y, u and v. Is it
possible that you are filling your screen space V3d structures with only x, y,
u and v?

		-Thomas

- Raw text -