> Dennis wrote:
> >y is set to the height of the kernel at the beginning of your
> >kernel. Then it's decremented with each scan line (1LK) or ever
> >other scan line (2LK).
> >This saves you from loading y to load your graphics.
>
> Yup, the trick is to setup P0_ptr outside the kernel, so that it
> points to your graphics exactly when the right scanlines (= y-
> values) are reached.
*ohhhhhhhh*...Eric Ball neglected to mention that little detail!
Man, skipDraw *is* pretty complex...most of the other descriptions
I've seen don't get into what all the preconditions (set up in the
VBLANK) are.
> To avoid page penalties, this also requires the graphics to start
> at (align 256 + kernel-height).
--
KirkIsrael@xxxxxxxxxxxxx http://kisrael.com
"Being 'in a state of nudity' is not an inherently expressive condition."
--Sandra Day O'Connor, in a ruling upholding a ban on nude dancing
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