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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer,comp.sys.amiga.games,comp.sys.amiga.hardware,comp.sys.amiga.misc,comp.sys.amiga.graphics
- Subject: Re: FPU and games?
- Date: 26 Jan 1996 03:11:19 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4e9gon$ron@sunsystem5.informatik.tu-muenchen.de>
- References: <38232041@kone.fipnet.fi> <volker.0ed8@vb.franken.de> <38232075@kone.fipnet.fi> <volker.0ehd@vb.franken.de> <38232112@kone.fipnet.fi> <volker.0en5@vb.franken.de> <38232154@kone.fipnet.fi> <wfblanDLozuJ.64s@netcom.com>
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-
- Wells Fargo Bank (wfblan@netcom.com) wrote:
- : Jyrki Saarinen (jsaarinen@kone.fipnet.fi) wrote:
-
- (fpu mapping)
-
- : : fadd fp5,fp4 ;1/z+=1/z step
-
- : : Now, with those fmoves to data registers this loop
- : : was very slow. Any reason why? Without those fmoves
- : : this loop was about the clock cycles the 040 manual
- : : tells.
-
- : : -- _
- : : a Stellar programmer _ //
- : : "Amiga - back for the future" \X/
-
-
- : So am I correct to understand that you are saying that using the above loop
- : without the fmoves, it is pheasable to use the 040's FPU to improve texture
- : maped games and programs? And wouldn't this be all the more true on an 060?
-
- improve ? not in speed I guess, the loop really doesnt look like this.
-
- nothing against tests, nothing against this as option, but if you
- go requiring fpu for mapping you do something even those intl
- coders don't do!
-
- a mul each 8 pixels like jyrki told sounds good. I heard descent does
- it each 16 cycles, this should be enough, why should my 020 do harder
- work than a 586 ?
- Now don't tell me I am not to play doom on my crap 020,
- a mul is a mul and will stay a mul also on 060.
-
- I estimate real clones could run factor 2 to actual available clone demos.
- gloom. argh. a _wolf_ not much faster than good old td57.
-
- : Rob Bamford
- : (wfblan@netcom.com)
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-