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From: Eric.J.Baumgartner@dartmouth.edu (Eric J. Baumgartner)
Newsgroups: comp.sys.mac.programmer
Subject: Fading the screen to black
Message-ID: <1991Feb19.173300.6040@dartvax.dartmouth.edu>
Date: 19 Feb 91 17:33:00 GMT
Sender: news@dartvax.dartmouth.edu (The News Manager)
Organization: Dartmouth College, Hanover, NH
Lines: 18

Both the Fadeaway module of AfterDark and the shareware screen saver
Dimmer work by gradually fading the screen (more impressive on a color
screen) to black.  I thought this was kind of cool, until I tried it
with a RasterOps 364 in 24-bit mode running live video.  EVERYTHING
fades away, 24-bit color AND the running video!  Now I think this is a
very cool thing.

Anyone know how to do it?  My skills at reading assembly in Macsbug are
limited.  Does it just happen that modifying an 8-bit palette or clut
(the way I thought these guys worked) also works on a 24-bit monitor,
or do you have to fiddle with the gamma table of the video card...

Advice, source, comments accepted.  Send email and I'll summarize if
there's interest.

Eric Baumgartner                      Internet:  ebaum@dartmouth.edu
Interactive Media Lab                 Applelink: DARTMED
Dartmouth Medical School              -- This space for rent. --