Path: utzoo!attcan!uunet!cbmvax!carolyn
From: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Newsgroups: comp.sys.amiga.tech
Subject: Re: A dual playing fields question
Message-ID: <4289@cbmvax.UUCP>
Date: 19 Jul 88 19:41:10 GMT
References: <1034@ucsd.EDU>
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Organization: Commodore Technology, West Chester, PA
Lines: 23

In article <1034@ucsd.EDU> rich@net1.ucsd.edu (bmf) writes:
>
>
>How can I create a dual playing field with a custom window?
>Custom windows only point to one struct RastPort and you need two
>to create a dual playing field. I would greatly appreciate any help
>I can get on this. 

I may be wrong, but I don't think you can have a dual-playfield WINDOW.
You can have a dualpf ViewPort.  With some tricks, you can have a dualpf
Screen.  But as far as I know you must render to the unclipped RastPorts
of your viewport or screen.

See Fish Disk 87 for Jim Mackraz's WbDualPF.c for an example of 
retrofitting a screen as dualpf.
 
-- 
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  Carolyn Scheppner -- CATS  Commodore Amiga Technical Support
  PHONE 215-431-9180   UUCP  ...{uunet,allegra,rutgers}!cbmvax!carolyn 

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