Path: chuka.playstation.co.uk!news From: Robert Swan Newsgroups: scee.yaroze.programming.2d_graphics Subject: Re: Caches Date: Mon, 17 Aug 1998 19:11:04 +0100 Organization: I wish! Lines: 17 Message-ID: <35D87238.2CBE@mdx.ac.uk> References: <35C81A30.4ACB@club-internet.fr> <35C82DDB.3E12E37C@scee.sony.co.uk> <01bdc061$2c186980$f30b0a0a@Angela1.intelligent-group.com> <35D2E01D.5CA1@mdx.ac.uk> <6r0vps$n7i6@chuka.playstation.co.uk> <35D43404.282A@mdx.ac.uk> <35D438D2.908C3316@ndirect.co.uk> <35D43F08.36BA@mdx.ac.uk> <35D44CBE.1FA95769@ndirect.co.uk> <35D46843.5DF5@mdx.ac.uk> <35D4750C.A4613436@ndirect.co.uk> <35D47AA8.4E80@mdx.ac.uk> <35D48242.CC86BE26@ndirect.co.uk> <35d51fb9.8182565@news.scea.sony.com> <35D84FAA.43FDFA48@ndirect.co.uk> <01bdc9f7$97492420$230b0a0a@Angela1.intelligent-group.com> NNTP-Posting-Host: nova.mdx.ac.uk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01 (X11; I; SunOS 5.5 sun4u) Craig Graham wrote: > > So, I'm suggesting that the GPU draw time is significantly less when each > chunk of the > > sub-divided texture fits in the cache, outweighing the CPU overheads of > packet creation and the > > sub-division itself. so can i draw the conclusion that when a draw texture command is reached within the ordering table, then it automatically sticks the top left of the texture from the vram into the texture cache(unless of course its already got the same texture in it) and then doesnt move the stuff in the texture cache again, so benefits from the cache only come when it is drawing the top - left of the texture which happens to be in the cache? wierd :) Rob