Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!RICHTER.MIT.EDU!krowitz
From: krowitz@RICHTER.MIT.EDU (David Krowitz)
Newsgroups: comp.sys.apollo
Subject: Re:  Color Graphics
Message-ID: <8906051350.AA08942@richter.mit.edu>
Date: 5 Jun 89 13:50:56 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 15

An afterthought ... even though the display controllers on
the DN3xxx/4xxx don't have a 24-bit mode, you can display
24-plane bitmaps on an 8-plane screen. You must convert the
24-plane bitmap to an 8-plane bitmap using a 2x2 or 3x3, 6-level,
orered dithering which will give you (6*4)**3 or (6*9)**3 colors
at a cost of a slight blurring of the image.


 -- David Krowitz

krowitz@richter.mit.edu   (18.83.0.109)
krowitz%richter@eddie.mit.edu
krowitz%richter@athena.mit.edu
krowitz%richter.mit.edu@mitvma.bitnet
(in order of decreasing preference)