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Mail Archives: djgpp/1999/09/12/21:21:23

Message-ID: <37DC4B53.1ED4@ns.sympatico.ca>
From: Klaas <klaas AT ns DOT sympatico DOT ca>
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro 3D functions - won't display on right half of the screen
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Date: Mon, 13 Sep 1999 00:55:00 GMT
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Thomas Harte wrote:
> 
> > I built a basic rotating cube demo with the allegro polygon and matrix
> > functions, but I have a problem.  The cube displays as expected when in
> > 8bit color (cube in center of the screen).  BUT, when I change NOTHING
> 
>         Unless I am mistaken, the polygon routines are only for 8bit modes (they are
> not considered very important any more), so if you are trying to use them in
> 16bit mode they will be writing one pixel every 8bits, causing one screen
> pixel to be made up of two calculated pixels, and hence the 'squashing'
> problem.
> 
>         Try one of the add-on libraries listed on the Allegro site if you want
> polygon routines for other colour depths.
> 
>                 -Thomas

Thanks, I'll try that.

-Mike

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