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List:       kde-core-devel
Subject:    Re: [Fwd: low color dithering on big endian]
From:       Francois-Xavier Duranceau <duranceau () free ! fr>
Date:       2000-09-15 18:22:44
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Stephan Kulow wrote:
> 
> Hi!
> 
It seems I have the same problem on my Solaris 8bpp box. After
commenting the call to KPixmap::LowColor in KDE (actually in kdesktop
and kcontrol/background) the desktop looks much better...

FX

> I forward here as I doubt Mark is still maintaining
> kpixmap and I have no idea either. So I forward it here,
> hoping that someone might find it.
> 
> Greetings, Stephan
> 
> -------- Original Message --------
> Subject: low color dithering on big endian
> Date: Thu, 14 Sep 2000 22:45:47 +0200 (CEST)
> From: Adrian Schroeter <adrian@suse.de>
> Reply-To: Adrian Schroeter <adrian@suse.de>
> To: Stephan Kulow <coolo@kde.org>
> CC: donohoe@kde.org
> 
> hi,
> 
> the KPixmap::LowColor dithering on a PPC with 8 bit color depth is
> broken. (I got always a wrong color). the problem is inside
> kdelibs/kdecore/kpixmap.cpp
> 
> I did not really understand your code (good job ;-), but I commented out
> some lines which seems to be a candidate and it works. I do not know
> about any side effects, but the problem disappears. You may want to have
> a look at line 159:
> 
> //      if (endian) {
> //          for (x=0; x<sw; x++)
> //              *b++ = INDEXOF(pv[2][x],pv[1][x],pv[0][x]);
> //      } else {
>             for (x=0; x<sw; x++)
>                 *b++ = INDEXOF(pv[0][x],pv[1][x],pv[2][x]);
> //
> }
> 
> but there are more problems on this architecture :-(
> 
> thanx
> adrian
> 
> ********************************************************************************
> Adrian Schröter
> SuSE GmbH, Schanzaeckerstr. 10, 90443 Nuernberg, Germany
> Email: adrian@suse.de

-- 
Francois-Xavier DURANCEAU
mailto:duranceau@free.fr, mailto:duranceau@kde.org
Visitez http://www.kde.org/fr/

KDE -- Color Outside The Lines !

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