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- Path: sparky!uunet!pipex!warwick!uknet!sys.uea.ac.uk!cmp0119
- From: cmp0119@sys.uea.ac.uk (Paul Harrison)
- Newsgroups: alt.sys.amiga.demos
- Subject: Re: AGA-demo at Anarchy's party...
- Message-ID: <cmp0119.722533467@radon.sys.uea.ac.uk>
- Date: 23 Nov 92 15:44:27 GMT
- References: <1975@vall.dsv.su.se> <1992Nov21.212919.61155@cc.usu.edu> <OAHVENLA.92Nov22161347@lk-hp-4.hut.fi> <1992Nov23.042143.28256@daimi.aau.dk>
- Sender: news@sys.uea.ac.uk
- Organization: UEA School of Information Systems, Norwich, UK.
- Lines: 25
- Nntp-Posting-Host: radon.sys.uea.ac.uk
-
- u920659@daimi.aau.dk (Carsten S|rensen) writes:
-
- >oahvenla@snakemail.hut.fi (Osma Ahvenlampi) writes:
-
- >>Actually, it'd be 16777216, if there was enough pixels. You can use any color
- >>from the palette even in HAM8 mode, which makes it compressed 24 bit. Think
- >>about it, 24 bit graphics in 1/3 of the space, and hardware to show it without
- >>any conversions!
-
- >If HAM8 works like I think it does (like the previous HAM (6?)) then the
- >number of colors must be 262144 + 64.
-
- > _ SLAMMER of
- > //\ __ __ __ _ |_
- > //--\| )(_| | (__| )\/ - BEDTIME FOR DEMOCRACY
- > / u920659@daimi.aau.dk
-
- You're both right. The 64 "palette" colours can be used to set the least
- significant parts of the colour registers, so *in theory* the full 16M
- colours can be used. In practice, because each use of a palette colour
- changes every bit of a colour register, it's very difficult to use in any
- practical form without making strange, corrupted, pictures, so 262144+64
- (+ tricks using the copper) is the practical maximum.
-
- Paul
-