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- Path: ifi.uio.no!usenet
- From: ludvigp@ifi.uio.no (Ludvig Pedersen)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: doubling pixels horizontally
- Date: 21 Feb 1996 19:22:52 GMT
- Organization: Dept. of Informatics, University of Oslo, Norway
- Message-ID: <846.6625T1042T1568@ifi.uio.no>
- References: <4f4ibc$gl9@news.cs.tu-berlin.de> <591.6610T1165T2102@login.eunet.no><1045.6611T753T2256@vip.cybercity.dk><695.6611T1193T2676@login.eunet.no><729.6615T699T2129@vip.cybercity.dk><807.6616T1079T1489@login.eunet.no><896.6617T632T386@vip.cybercity.dk>
- <1281.6621T599T1509@ifi.uio.no> <4gbk6m$104@sunsystem5.informatik.tu-muenchen.de>
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-
- >Ludvig Pedersen (ludvigp@ifi.uio.no) wrote:
- >: Ours *is* going one frame and it uses only as much time as it takes to copy
- >: the byffer (20480 pixels) to chipram.
- >: - Linear chunky buffer
- >: - CPU and Blitter is NOT working at the same time in chipram!
- >: - CPU time per frame is 4-5 ms. (About 70-75 rasterlines)
- >so this is cpu 2-pass + 1 blitter pass, right ? blitter needs a half frame,
- >and if you start blitter after the pass+copy, it's automatic not working
- >same time in chipmem :) as long as you stay on 2x2...
- Well, yeah. But it is possible, just add another buffer. ;-) (But thats
- foolish!)
-
- Anyway, the reason why I mentioned it was because I have acutally seen
- some c2p which had this mistake. (CPU + BLITTER in chipram =/= smart!)
-
-
- <sb>Ludde - Amiga Demo Coder
- <sb>Virtual Reality & Official Be developer
- <sb>ludvigp@ifi.uio.no
-
-