Subject: [stella] Re: skipdraw from Eric Ball From: "Eric Ball" <ericball@xxxxxxxxxxxx> Date: Tue, 13 Apr 2004 19:28:32 -0400 |
> > 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. > > To avoid page penalties, this also requires the graphics to start > > at (align 256 + kernel-height). > > *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. I didn't know that detail myself. I haven't used skipDraw (Skeleton+ doesn't, though it could/should), I just waded through the [stella] archives to find out what all the fuss was about. ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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