From:	Fabrice ILPONSE <fabrice AT asim DOT lip6 DOT fr>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: 24bit color
Date:	Tue, 18 Aug 1998 11:21:57 +0200
Organization:	Universites Paris VI/Paris VII - France
Lines:	38
Message-ID:	<35D947B5.EB726AE2@asim.lip6.fr>
References:	<6raoic$7ri$1 AT nnrp3 DOT snfc21 DOT pbi DOT net>
NNTP-Posting-Host:	asim.lip6.fr
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Keith Stropus wrote:
> 
> Hello!  I have a question.  I got a demo program the demonstrates how to use
> VESA VBE.  I modified it to use 800x600x24.  The original program used
> 640x480x8, and used the rgb tables.  Now I cannot seem to figure out how the
> heck to use the 24bit color.  No matter what I do, I can only access 256
> colors at a time.  I have no experience in 24bit color programming.  I was
> under the impression that 24bit color meant that you could display 16million
> colors on the screen at once.  Can anyone tell me how to do this?  I would
> really appreciate it.
> thanks...

If you've corectly set the 24 bits mode, you must not access it as a 256
colors mode. There is no more palette available. For each point you have
to set the R,G and B level.

eg: you video adress is adr;

struct 
{
	char r,g,b;

} *adr;

to set point 0:

adr[0].r=red;
adr[0].b=blue;
adr[0].g=green;

-- 
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	| | |
	+-+-+	Fabrice ILPONSE
	  |	email: fabrice AT asim DOT lip6 DOT fr
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