Path: chuka.playstation.co.uk!news
From: "George Bain" <George_Bain@Playstation.sony.com>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Re: 512 Screen Height
Date: 16 Jul 1998 08:51:42 GMT
Organization: SCEE
Lines: 36
Message-ID: <01bdb032$f0a15440$f2e832a2@gbain.wav.scee.sony.co.uk>
References: <35ACEA5E.96722CBB@ndirect.co.uk> <35ACEE3B.52F5C754@ndirect.co.uk> <01bdafbb$d3dd9020$f2e832a2@gbain.wav.scee.sony.co.uk> <01bdb093$8b531180$f30b0a0a@Angela1.intelligent-group.com>
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Hi there,

He thought it was a bug in LibGS.  It's not a GPU bug..it's a feauture :)
As for 640,511....I'll sleep fine...minus 1 line.

Regards,

George@SCEE

Craig Graham <c_graham@hinge.mistral.co.uk> 
> 
> George Bain <George_Bain@Playstation.sony.com> wrote in article
> <01bdafbb$d3dd9020$f2e832a2@gbain.wav.scee.sony.co.uk>...
> > Hi Herb,
> > 
> > When doing hi-res clearing using GsSortClear() it will only work if the
> > screen res is 640 x 511.  It's not a bug at all.  It just starts to
clear
> > from
> > line 0-511, which = 512 lines.  So just set your
> 
> That's wrong George, there is a bug in the GPU where is clips draw ops
> at 511 lines high, so you never get the last line of a 512 high screen
> cleared
> in a single op.
> 
> > GsInitGraph(640,511,etc...).
> 
> That just cheats and only displays 511 lines, so you don't see the line
> that the
> clear fails on.
> 
> Craig @ IR
> 
>