From:	Vic <tudor AT cam DOT org>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Allegro - Triangle bug?
Date:	Wed, 20 May 1998 17:00:23 -0400
Organization:	Communications Accessibles Montreal, Quebec Canada
Lines:	11
Message-ID:	<35634467.7A3@cam.org>
References:	<35633112 DOT 3679877 AT news DOT flashnet DOT it>
NNTP-Posting-Host:	dialup-380.hip.cam.org
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Tiziano Lena wrote:
> 
> Hi!
> Has the triangle(...) call any known bug?
> I ported my Djgpp 3d engine to Djgpp+Allegro (3.0 + WIP) and the
> program sometimes crashes (SIGFPE) when I am close to objects.
> In gdb I made a disassemb <eip> and saw that it points to the triangle
> routine...

are you doing any clipping? Are any of the Z coords negative, or very
close to 0? You should clip to a Z=1 plane before drawing.

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