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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: C2P
- Date: 29 Jan 1996 17:00:27 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4eiufb$ech@sunsystem5.informatik.tu-muenchen.de>
- References: <john.hendrikx.48y9@grafix.xs4all.nl>
- NNTP-Posting-Host: hphalle5.informatik.tu-muenchen.de
- Originator: fischerj@hphalle5.informatik.tu-muenchen.de
-
-
- In article <john.hendrikx.48y9@grafix.xs4all.nl>, john.hendrikx@grafix.xs4all.nl (John Hendrikx) writes:
- |> In a message of 19 Jan 96 Jorge Acereda Macia wrote to All:
- |>
- |> >> after having counted the scanlines the effect needs, (by measuring the
- |> >> hight of it on the TV! :D) you calculate
- |>
- |> >> time= (measured_height/height_of_wbscreen)*(256/312.5)*20ms
- |>
- |> JAM> Why don't you use ReadEClock()?
- |>
- |> Works great, in fact, when used properly (and when you time sufficient loops
- |> and take some other stuff into account) you can create a routine which is
- |> accurate enough to tell you that instructions like 'Move.l d0,d0' take 2.00
- |> cycles on a 68030 (so it is accurate to about 1/100th of a CPU cycle -- I guess
- |> that beats counting rasterlines)
-
- hehe and what about estimating the ratio outer vs inner loop of a
- polyengine ? I let outer loop appear yellow and inner red.
-
- Then I could see how ratios change change when polywidth
- (a horiz line of it) increases. Outer loop same, but incresed
- storage time, so the disply became more red at bottom.
-
- Show me one clock that can perform this without making the
- outer loop 2 times slower ;) I bet it won't include realtime
- visualisation of the timings ;)
-
- |>
- |> Grtz John
- |>
- |> -----------------------------------------------------------------------
- |> John.Hendrikx@grafix.xs4all.nl TextDemo/FastView/Etc... development
- |> -----------------------------------------------------------------------
- |> -- Via Xenolink 1.985B3, XenolinkUUCP 1.1
-
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-