From kde-devel  Mon Jul 14 11:10:47 2008
From: Michael Leupold <lemma () confuego ! org>
Date: Mon, 14 Jul 2008 11:10:47 +0000
To: kde-devel
Subject: Re: KDE4 and the nvidia driver
Message-Id: <200807141310.47400.lemma () confuego ! org>
X-MARC-Message: https://marc.info/?l=kde-devel&m=121603391510022

Am Montag, 14. Juli 2008 schrieb John Tapsell:
> 2008/7/12 Michael Leupold <lemma@confuego.org>:
> <snip>
>
> > - OpenGL mode: Shared Memory
>
> I don't think enabling shared memory is such a good idea, performance
> wise.  Shared memory is rarely a good idea, since almost all machines
> these days have dedicated video memory (making shared memory between
> xserver and x apps pointless)  and is fairly incompatible with XRender
> anyway.  (XRender disables whole chunks of functionality from the
> shared extension).  Even on systems with host memory being used for
> video memory, I don't think shared memory would help.

While I (partly) understand why it is supposed to be bad it (strangely) 
doesn't seem to be. On enabling OpenGL/Shared Memory together with 
InitialPixmapPlacement=2 my kwin's responsiveness went up.

But actually I've long stopped wondering about nvidia graphics issues... :-)

Regards,
Michael
 
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