Path: chuka.playstation.co.uk!news From: James Russell Newsgroups: scee.yaroze.freetalk.english Subject: Re: S*ga Dreamc*st Date: Wed, 05 Aug 1998 16:40:07 +0100 Organization: Sony Computer Entertainment Europe Lines: 31 Message-ID: <35C87CD7.C91278E8@scee.sony.co.uk> References: <3569980E.51FC@saqnet.co.uk> <356A77BD.596@dma-design.com> <356a4d1f.24746116@news.scea.sony.com> <356A8BBD.5DD9@dma-design.com> <35C13E1E.4A99D280@mail.datasys.net> <1dd416x.1cqaclz4vkpc1N@a1-88-110.a1.nl> <6q1g2e$fvf13@chuka.playstation.co.uk> <1dd8b4y.1g33oa41ggvfzhN@[194.151.88.144]> <35C829EA.55EFA3B1@scee.sony.co.uk> <01bdc063$d0e4e900$f30b0a0a@Angela1.intelligent-group.com> NNTP-Posting-Host: mailgate.scee.sony.co.uk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 4.5b1 [en] (Win95; I) X-Accept-Language: en Craig Graham wrote: > > The voices of people who've never programed hitatchi processors - I've done > load of hitatchi assembler, and the chips are very quick and very fast in practise. And cheap... Colin tells me that rumour has it Hitachi haven't managed to break the 130 Mhz limit, something to do with a bad batch of silicon. They were hoping to have the problem fixed by the time the DC came out... > You can segment space to allow several CPU's/GPU's to work on the same scene (that's how Sega's > new arcade system works). You do a quick clip to find which polygons lie in which zones, then > split off to work on each zone independantly. Having seen Daytona 2, all I can say is that it works really really well! > Also, Pre-Scene for on frame can be done in parallel with Scene Creation for the previous > frame, which is done in parallel with the actual scene drawing of the frame before that... Yeah, that's sort of what I meant by triple buffering. I used that on the Amiga: The CPU was drawing up one screen, while another was being displayed, and the blitter was clearing the next. On the PSX, I guess that's roughly what we do anyway - CPU creates frame X, GPU is drawing frame X-1, screen is displaying frame X-2. James -- == James_Russell@scee.sony.co.uk +44 (171) 447-1626 == Developer Support Engineer - Sony Computer Entertainment Europe Where there's a will, I want to be in it.