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From: jalkio@cc.helsinki.fi
Newsgroups: comp.sys.amiga.advocacy
Subject: Re: Color palette correction (NeXT)
Message-ID: <1991Apr20.211035.6064@cc.helsinki.fi>
Date: 20 Apr 91 21:10:35 GMT
References: <1991Apr19.003352.6042@cc.helsinki.fi> <1991Apr19.014549.15293@mintaka.lcs.mit.edu>
Organization: University of Helsinki
Lines: 29

In article <1991Apr19.014549.15293@mintaka.lcs.mit.edu>, rjc@churchy.gnu.ai.mit.edu (Ray Cromwell) writes:
> In article <1991Apr19.003352.6042@cc.helsinki.fi> jalkio@cc.helsinki.fi writes:
>>
>>Perhaps saying that the Color station has a palette of 16M is a bit too
>>much and saying that it only has a palette of 4096 is a bit too
>>low... The thruth lies somewhere in between.
>>
>>:-)
>>
>>			Jouni
> 
>   I don't agree with this. Most Amiga graphic programs store images
> internally as 24bits and most load/save IFF24 bit images, however
> the standard Amiga can only quantize these images to 4096 colors.
> The NeXT hardware palette is 12(16?)bits, period. It doesn't matter if the
> OS stores pictures internally as 100 bits, the hardware is only
> capable of 4096 different colors.
> 

I don't think NeXT is just like this. I understood that there really
_ARE_ 16M different shades, of which the operating system automatically
chooses the best suited for each situation (determined by the "basic"
color, of course). You only can't directly access all those shades.
Thus, those 12 (or 16) physical bits just refer to a table where each
entry can contain a 24-bit color value. 

I might have understood wrong, of course.

			Jouni