Path: chuka.playstation.co.uk!news
From: "Craig Graham" <c_graham@hinge.mistral.co.uk>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Re: 512 Screen Height
Date: 16 Jul 1998 08:29:31 GMT
Organization: PlayStation Net Yaroze (SCEE)
Lines: 24
Message-ID: <01bdb093$8b531180$f30b0a0a@Angela1.intelligent-group.com>
References: <35ACEA5E.96722CBB@ndirect.co.uk> <35ACEE3B.52F5C754@ndirect.co.uk> <01bdafbb$d3dd9020$f2e832a2@gbain.wav.scee.sony.co.uk>
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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