Re: A86: Re: Re: Re: BG v1.0 grayscale converter is out !
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Re: A86: Re: Re: Re: BG v1.0 grayscale converter is out !
Jimmy Mårdell wrote:
> At 12:04 1998-06-02 -0400, you wrote:
> >You could use a pre-calculated Lookup table for the PutPixel routine for any
> >memory address, suitable for grayscale.
> >You could use an ultra fast IM 2 interrupt handler for grayscale (see
> >gray.asm attached by Dux earlier). Thats your
> >interrupt handler we derived that from Jimmy, remember (the Down-Left bug
> >fix message a few months back)
>
> Not necessary; grayscale & putpixel is fast enough. If you want to
> optimize something, you shouldn't optimize the part of the program
> that's seldom run (compared to the mathematical parts).
The less time you spend on the interrupt, the more time you spend executing game
code. There's no reason why you should get the user checksum 200 times a second.
> >[linear addressing $4000-$BFFF]
>
> Yes, I've also had that idea...
>
> --
> Real name: Jimmy Mårdell "can't go mucking with a 'void *'"
> IRC......: Yarin // Apple's MPW C compiler
> Email....: mailto:yarin@acc.umu.se
> Homepage.: http://www.acc.umu.se/~yarin/ <-- NEW HOMEPAGE!!
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