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
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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.