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From: rotberg@dms.UUCP (Ed Rotberg)
Newsgroups: comp.sys.mac.programmer,comp.graphics
Subject: Re: color bitplanes on a Mac?
Message-ID: <1012@dms.UUCP>
Date: 15 Mar 90 17:14:57 GMT
References: <53503@bbn.COM>
Organization: Atari Games Inc., Milpitas, CA
Lines: 29

From article <53503@bbn.COM>, by mesard@bbn.com (Wayne Mesard):
> Summary:
> --------
> I want to use bitplanes on a MacII.  How to do this isn't at all clear
> to me.  I'm hoping that I'm revealing some profound ignorance on my part
> about Mac color or graphics or both and that someone can set me
> straight.

Wayne,

The Macintosh documentation on Color Quickdraw (Inside Macintosh vol V)
does talk about 3 different methods of implementing color.  I'm doing
this from memory, but I beleive that they refer to them as Chunky (which
is the CLUT type), Planar (the kind you are looking for) and Chunky
Planar (I'm not sure on all the details here).  In any event, after allowing
you to specifiy which type of data your bitmap is in things such as cicn's
and cursors, I beleive that the only one currently supported is the
Chunky type.  Once again, I read all this stuff a while ago, and really
haven't had a need to deal with it recently, but I recall bemoaning the
fact that the Planar type was not fully supported for just your reasons.

This info is rather sketchy, and shouldn't be taken as gospel.  What I 
really recommend is getting IM v V and checking up on it.  My copy is at
home, otherwise I would quote you the important sections.  If you can't
get the document, email me & I try to remember to bring in vol V
tomorrow.

	- Ed Rotberg -
	- Atari Games -