From: "Andrew Green" <umgree03 AT cc DOT umanitoba DOT ca>
Newsgroups: comp.os.msdos.djgpp
References: <7c1sru$2a8i$1 AT news DOT gate DOT net>
Subject: Re: ALLEGRO: Using masks ...
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Date: Tue, 09 Mar 1999 01:44:18 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

I think I know what your asking but if not oh well.
Here's my idea anyway
instead of having 255,0,255 as trans color you could use black(0,0,0).  You
could then draw to black with an XOR and to the white with and AND.
It's just an idea and I'm not sure if AND and XOR blits or drawsprites exist
in allegro(and dont feel like looking:)


Matt Murrian wrote in message <7c1sru$2a8i$1 AT news DOT gate DOT net>...
>Hi,
>What I want is this ... I have 3 images ... 2 are normal images and 1 is a
>mask. The mask contains 255,0,255 (transparent color) on one side, and
white
>on the other. I want to draw image 1 over the transparent color and image 2
>over the white, that's not what I technically need to do, I know that, but
>it's the easiest way to explain it. If anyone has any ideas, it would be
>appreciated very much. Please e-mail response to mmurrian AT gate DOT net
>Thanks,
>Matt
>
>