Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!cwjcc!gatech!udel!mmdf From: karl%sugar.uu.net@UDEL.EDU Newsgroups: comp.sys.amiga Subject: glitching sprites while doing ScrollVPort Message-ID: <4403@louie.udel.EDU> Date: 3 Oct 88 22:04:07 GMT Sender: mmdf@udel.EDU Lines: 26 Received: from CUNYVM by CUNYVM.BITNET (Mailer X2.00) with BSMTP id 2468; Sat, 01 Oct 88 18:42:46 EDT Received: from UDEL.EDU by CUNYVM.CUNY.EDU (IBM VM SMTP R1.1) with TCP; Sat, 01 Oct 88 18:42:28 EDT Received: from Louie.UDEL.EDU by Louie.UDEL.EDU id aa17717; 30 Sep 88 21:09 EDT Received: from USENET by Louie.UDEL.EDU id aa17593; 30 Sep 88 21:00 EDT From: Karl Lehenbauer Subject: glitching sprites while doing ScrollVPort Message-ID: <2716@sugar.uu.net> Date: 30 Sep 88 22:47:55 GMT Organization: Sugar Land Unix - Houston, TX To: amiga-relay@UDEL.EDU Sender: amiga-relay-request@UDEL.EDU I'm having some problems with a little technology demonstrator I'm cooking up. It is a lunar lander that vertically and horizontally scrolls a 320X200 screen over a 640X400 IFF ILBM using ScrollVPort. The problem is that when the screen is scrolling, the sprites glitch, show as vertical crud for the whole height of the display and such. I was wondering if anybody knows offhand what I should be doing that I'm not. It's possibly just a dumb bug inside the program, though, 'cuz it's kind of hacked, but it's so strongly correlated with the scrolling, I thought there might be something I missed. -- -- "Insert the disk at your own risk." -- Firesign Theater -- uunet!sugar!karl, Unix BBS (713) 438-5018