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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@informatik.tu-muenchen.de (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: doubling pixels horizontally
- Date: 14 Feb 1996 19:22:55 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4ftcqf$2bm@sunsystem5.informatik.tu-muenchen.de>
- References: <4f4ibc$gl9@news.cs.tu-berlin.de> <591.6610T1165T2102@login.eunet.no><1045.6611T753T2256@vip.cybercity.dk><4faoe1$47@sunsystem5.informatik.tu-muenchen.de><2991.6612T1034T625@vip.cybercity.dk> <576.6613T1070T1730@login.eunet.no> <1257.6614T57T <4fnq7t$rkv@brachio.zrz.TU-Berlin.DE> <656.6617T1074T2417@login.eunet.no>
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- Originator: fischerj@hphalle10i.informatik.tu-muenchen.de
-
-
- In article <656.6617T1074T2417@login.eunet.no>, patrick.hanevold@login.eunet.no (Patrick Hanevold) writes:
- |> Organization: EUnet Norway
- |> Lines: 14
- |> Message-ID: <656.6617T1074T2417@login.eunet.no>
- |> References: <4f4ibc$gl9@news.cs.tu-berlin.de> <591.6610T1165T2102@login.eunet.no><1045.6611T753T2256@vip.cybercity.dk><4faoe1$47@sunsystem5.informatik.tu-muenchen.de><2991.6612T1034T625@vip.cybercity.dk>
- |> <576.6613T1070T1730@login.eunet.no> <1257.6614T57T <4fnq7t$rkv@brachio.zrz.TU-Berlin.DE>
- |> NNTP-Posting-Host: pc9.asker-pm2-1.eunet.no
- |> X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
- |>
- |>
- |> >>>There are a few demos using this kind of blitterscreen with the spritemask.
- |> >>It was me and Ludvig Pedersen who wrote those c2p routines, so I know.
- |> >We don't forget that the sprite mask idea to save a pass is by Juergen
- |> >Fischer, do we? Changing the first two blitterpasses into CPU passes
-
- Yep I hope they don't =:) I guess he referes to cpu pass
- routines he wrote on his own.
-
- |> >isn't a great deed.
- |> He came first with it, so I guess he deserves the credits for that.
- |> No new idea though, and we designed our from scratch, and our is the fastest
- |> around. :) And the new one is even 40% faster. :) (Soon to be released.)
-
- So what is faster than copying data to chipmem ? nothing ;)
-
- On 030 blitter limits the framerate, so cpu passes increase
- timings (but the chunky dump to chipmem is still not faster
- than 7mb/sec) that's what you refer to ;)
-
- So the "40% faster" is quite a random number, I guess
- you refer to the time needed to c2p, which is in some
- cases (slow rendering, "doom") unimportant when done by
- blitter. In some other cases (very fast rendering, or
- fast cpu) your number gets important though.
-
- The number of passes to be done by cpu depends on
- the cpu AND the kind of effect (execept 040+ where
- cpu only is best for any effect).
-
- I would make a file where user can config the
- number of passes, individually for each effect
- (or each new kind of effect). And I would make
- it possible to select writepixelarray8 for maximum
- c00l showoff on gfx-cards and maybe AGA+ BTW.
-
- |>
- |> <sb>Patrick Hanevold - Virtual Reality developer
- |> <sb>patrick.hanevold@login.eunet.no
- |> <sb>Amiga and official Be developer
- |>
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-