Path: chuka.playstation.co.uk!news From: James Russell Newsgroups: scee.yaroze.programming.3d_graphics Subject: Re: GsLinkObject4 Confusion - Moving on to GsSortObject4 Date: Tue, 25 Aug 1998 12:24:50 +0100 Organization: Sony Computer Entertainment Europe Lines: 29 Message-ID: <35E29F02.E57E6A2@scee.sony.co.uk> References: <35E2909F.3394@funnytown.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 Gerrit Goossen wrote: > > I guess now my question is: Can anyone tell me exactly what operations > GsSortObject4() performs? > > - Is perspective conversion performed on all the verticies in a TMD > object? (Regardless of whether they are used in primitives or not?) Nope, only the ones that are used will be converted. > Or does it perform the same conversion on the verticies multiple times if > they are used in multiple primitives? Yes. Not exactly efficient, I know. > - Is there anyway to *prevent* GsSortObject4() from performing > perspective conversion? (And just perform sorting?) GsSetProjection(1) or GsSetProjection(-1) might help. Don't know, haven't tried this. Cheers, James -- == James_Russell@scee.sony.co.uk +44 (171) 447-1626 == Developer Support Engineer - Sony Computer Entertainment Europe My lucky color just faded.