Path: chuka.playstation.co.uk!news From: "Matt Verran" Newsgroups: scee.yaroze.freetalk.english Subject: Re: negative scrolling on homebrew map routine - need help!! Date: Tue, 20 Mar 2001 12:42:29 -0000 Organization: PlayStation Net Yaroze (SCEE) Lines: 17 Message-ID: <997j6l$7jl8@www.netyaroze-europe.com> References: <3AAF7BB2.B427AED3@harbinger.com> <98o38v$ij81@www.netyaroze-europe.com> <98p3qp$rms2@www.netyaroze-europe.com> <98t840$6f5@www.netyaroze-europe.com> <99057g$3ok7@www.netyaroze-europe.com> <3AB6404F.65C9AF1C@harbinger.com> <9961fn$7jl4@www.netyaroze-europe.com> <99624q$7jl5@www.netyaroze-europe.com> <9963bb$7jl6@www.netyaroze-europe.com> NNTP-Posting-Host: host213-1-73-46.btinternet.com X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 I aggree that you shouldn't be getting such a high Hsync value. Like you said i'd expect it to be under 100. Hmmm I'd try eliminating all the 16bit textures for starters. Are you drawing blocks even if they are offscreen maybe (maybe when they are really big and only a few can be seen but you're still sorting a screen full of small ones)? Things can slow down quite a bit when you are scaling sprites up massively (more than 6 times ish). Try changing divisions and multiplications to shifts in loops with many itterations. Matt