Article View: comp.sys.amiga.tech
Article #11759Re: Fast 2-D Scrolling Method Needed (kinda long)
From: Randell Jesup
Date: Wed, 15 Mar 1989 04:23
Date: Wed, 15 Mar 1989 04:23
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1277 bytes
In article <736@cord.UUCP> nsw@cord.UUCP (Neil Weinstock) writes:
> Question #1: Can the copper reload just the bitplane pointers
> quickly enough to avoid blank scan lines between slices? If not,
> then we're hosed.
I dunno. Try it. It may depend on bitplanes/resolution.
>So, the end result is that you have created a circular queue of display slices
>which allows the display memory to be run like a treadmill. The height of each
>slice would determine how long you have to create the off-screen slice, but
>also how much you have to create. Optimal size would depend on the
>application.
Sounds neat.
--
Randell Jesup, Commodore Engineering {uunet|rutgers|allegra}!cbmvax!jesup
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!lll-lcc!pyramid!cbmvax!jesup From: jesup@cbmvax.UUCP (Randell Jesup) Newsgroups: comp.sys.amiga.tech,comp.sys.amiga Subject: Re: Fast 2-D Scrolling Method Needed (kinda long) Keywords: vague ideas Message-ID: <6282@cbmvax.UUCP> Date: 15 Mar 89 04:23:18 GMT References: <112@dg.dg.com> <10871@well.UUCP> <113@dg.dg.com> <10921@well.UUCP> <736@cord.UUCP> Reply-To: jesup@cbmvax.UUCP (Randell Jesup) Distribution: na Organization: Commodore Technology, West Chester, PA Lines: 17