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Mail Archives: djgpp/2000/02/24/18:08:50

From: Damian Yerrick <DONT DOT YOU DOT DAREd_yerrick AT hotmail DOT comSEND DOT SPAM>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Plotting a 24bit color pixel in Allegro
Organization: Pin Eight Software http://pineight.8m.com/
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Date: Thu, 24 Feb 2000 16:16:19 GMT
To: djgpp AT delorie DOT com
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On Thu, 24 Feb 2000 11:49:15 GMT, JAB <jab_joe AT my-deja DOT com> wrote:

> How do you plot a pixel in 24bit (or 32bit) color with Allegro?
> I have the image I want on screen in a unsigned long 1D array. I need
>to write that to screen as fast as possible. (It's gfx 3D thing I've
>made and converting to the PC). Before on the good old Acorn what I was
>doing was just writing this array to another array that's memory
>pointer was at the screen address. I know that you can't really do that
>on the PC in 24bit color at things like 640 by 480 so I need to find
>another fast way. Anyone got any words of advice, or at least telling
>me how to get a 24bit color pixel on the screen.

Look in the Allegro docs for putpixel() and direct memory access.

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