Message-ID:	<3883C036.E279E731@home.comNOSPAM>
From:	Robin Johnson <NOSPAMrobbat2 AT home DOT comNOSPAM>
Organization:	Orbit Computers
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Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Calculating transparent pixels in Allegro
References:	<h9Lg4.2696$eq DOT 31448 AT uutiset DOT nic DOT fi>
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Date:	Tue, 18 Jan 2000 01:21:44 GMT
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

"Jarkko Kähkönen" wrote:

> I use Allegro.
> And I have a program, which calc transparency of about 16 000 pixels in one
> frame.:)
> If I use getpixel, getr16, getg16 and getb16 and some other functions to get
> transparent color between two colors, it is too slow. I use 640x480/16bit
> mode.

Have you considered blitting the entire screen or image to a memory buffer, and
comparing from that directly?

>
> Maybe I must do one integer:
> int transparentpixel [65536][65536]; and at begin of program calculate
> every pixels transp color?:) That was a joke.:)
>
> Help me!
> Thanks,
> Jarkko Kähkönen
> Jarkko DOT Kahkonen AT mbnet DOT REMOVETHIS DOT fi




--
Robin Hugh Johnson
"Robbat2"
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