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- Path: io.salford.ac.uk!ais-ck-018
- From: D.A.Reed@chemistry.salford.ac.uk (Doug Reed)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: C2P
- Date: Thu, 11 Jan 96 17:57:58 GMT
- Organization: University of Salford
- Message-ID: <4d3j36$70g_001@salford.ac.uk>
- References: <4cj57f$7qe@irz210.inf.tu-dresden.de> <4cjmsk$9aa@sunsystem5.informatik.tu-muenchen.de> <291.6578T1189T2189@login.eunet.no> <4cskrt$kmq@morgoth.sfu.ca> <4d16bt$48l@sunsystem5.informatik.tu-muenchen.de>
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- In article <4d16bt$48l@sunsystem5.informatik.tu-muenchen.de>,
- fischerj@informatik.tu-muenchen.de (Juergen "Rally" Fischer) wrote:
-
- >|> Are you using HAM mode? You can get excellent speed only updating
- the lower
- >|> four bitplanes and interlacing lores screens, alternating odd/even
- chunky
- >|> pixels.
- >
- >cool, have you done a demo with your idea ?
- >
- >if the cpu is quick enough, and the renderer is dirty enough to get
- >conversion for free ;) then you should even be able to copy a 1x1
- >screen in 1/2 >frame! =:o but maybe you got to wait for PPC to get it
- >for free ;)
- >would be especially interesting for all A3000 users! (quick cpu but no
- >AGA)
-
- I tried this using SuperHires Ham-6 (Soz A3000 users). On my 030-50F it
- does a 12-Bit truecolour 1X1 screen (256*256 [1024*256]) in about 12.5
- fps, and the processor is currently idle for >= 3/4 of the time (no
- rendering just F>C conversion), as the blitter is doing the bulk of the
- work and so there is plenty of time to render the screen with the
- processor. The only problems that I can see with it is that colours
- have to be scrambled to get this speed (this could be a pain when
- shading Etc.) and it requires s**tloads of memory. It does look good
- though. If only I had time to do something with it ;)
-
- Doug.
-