Message-Id:	<m0xOsio-0003DXC@fwd09.btx.dtag.de>
Date:	Sat, 25 Oct 1997 01:00:50 +0200
To:	tudor AT cam DOT org, djgpp AT delorie DOT com
References:	<343D1F26 DOT B4EBB976 AT ostrabo DOT uddevalla DOT se> <3444CC19 DOT 61E7 AT boat DOT bt DOT com>
	<62mt5t$rsb$7 AT 195 DOT 26 DOT 68 DOT 21> <344FD62D DOT 262F AT cam DOT org>
Subject:	Re: Fade routine
MIME-Version:	1.0
From:	Georg DOT Kolling AT t-online DOT de (Georg Kolling)

Vic schrieb:
> Michal Mertl wrote:
> > On Wed, 15 Oct 1997, Simon Churchill wrote:
> > > Andreas Björk wrote:
> > > Have You remembered that the palette is only 18bit colour not 24bit
> > >
> > > ie rgb vals go from 0 - 0x63 and not 0 - 0xff  ???????
> > >
> > Not to be pedantic but it's 0 - 63 (0x3f)
> Plus the palette is 8 bit. I never heard of 18 bit...

Never heard? I assume you haven't tried graphics programming yet...
Picture data is 8 bit per pixel because it's a reference to the 256 DAC palette
registers which are 18 bit wide (6 bit for red/green/blue values, which leads to
2^18 = 262144 different colors, but only 256 of them are displayable at the same
time) HiColor/TrueColor modes don't have a palette which makes fading a hard
task (I've heard something about 'color ramp' but I don't know what this really
is...) 

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