[A83] Re: A83: Need a vertical clipping AND sprite routine
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[A83] Re: A83: Need a vertical clipping AND sprite routine
I forget that you don't use a double buffer on the 83. However, my original
comment still stands. And it would not be slow. In fact, you would not
lose any speed at all (on the 85/86 you would lose a very trivial amount).
When you are outputting the screen to display controller, complement each
byte before writing it. This inverts the screen. There is no copying
involved (and with a true double buffer, there wouldn't be any extra copying
involved, you would be merely copying by hand instead of using ldir).
> Yeah, inverting would be VERY slow, also, you would have to do INVERT,
COPY
> TO THE SCREEN, AND INVERT AGAIN to restore it black on white to work as
> before :( Very slow....
>
> >um...INVERTING SLOW! Besides, I already have the routine written...
> >(modified Crashman's one)
> >
> >>Maybe you could try inverting the screen at the end, as you're copying
the
> >>double buffer?
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