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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: Bitfieldinsert?
- Date: 14 Feb 1996 18:53:40 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4ftb3k$1ua@sunsystem5.informatik.tu-muenchen.de>
- References: <38232329@kone.fipnet.fi> <4fnh84$1m7@oreig.uji.es> <38232421@kone.fipnet.fi>
- NNTP-Posting-Host: hphalle10i.informatik.tu-muenchen.de
- Originator: fischerj@hphalle10i.informatik.tu-muenchen.de
-
-
- In article <38232421@kone.fipnet.fi>, "Jyrki Saarinen" <jsaarinen@kone.fipnet.fi> writes:
- |>
- |> > > move.l (a0,d0.w*4),(a1)+
- |> > > addx.l d1,d0
- |> >
- |> > Cool! Looks fast when working with big polys, but handling left and
- |> > right bytes (edges) should slow down the thing...
-
- Indeed cool! 10/4 cycles / pixel for 4 planes, right ?
- Is this how pygmy did it ?
-
- I guess the edge handling will eat a very large part if
- you do more than a single polygon :\
-
- |>
- |> Yep. And 16 colours does not look too cool either. Besides,
-
- mhm 16 color only due to large table ?
-
- |> if the a1-buffer is in chip ram, the speed will not be
- |> so fast either.
-
- yep, but if you don't averagely overwrite a pixel more than
- 2 times it should still be faster to direct_render to chip ?
-
- |>
- |> > BTW... What's d0? rr...rrLLLLllllllllRRRR?
- |> > R= integer part of right color, r=decimal part
- |> > L= integer part of left color, l= "
-
- maybe a0 points to the table reflecting both
- current "horiz colorchange speed" and current planenumber ?
-
- |>
- |> Cant remember.. ask zuikkis@sci.fi for the original code and
- |> idea..
-
- I ask myself where is the crossover point where chunky gouraud+c2p
- is faster. a nice obj consists of quite small polygons, and chunky
- outer loop rules in this.
-
-
- |>
- |> -- _
- |> a Stellar programmer _ //
- |> "Amiga - back for the future" \X/
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-