Re: Xft performance
Re: Xft performance
- Subject: Re: Xft performance
- From: Matthias Neubauer <email@hidden>
- Date: 29 Jul 2003 00:28:08 +0200
Jerry Talkington <email@hidden> writes:
> On Mon, Jul 28, 2003 at 03:39:02PM +0200, Eric Knauel wrote:
> > Hi,
> >
> > I'm using an editor that runs on FreeBSD and OS X and uses Xft to draw
> > the text buffers. I got the impression that Xft drawing is
> > considerably slower on OS X. Actually, on a slow FreeBSD machine it's
> > not possible to see how the editor draws the text, while on a fast OS
> > X machine I can watch that closely. I don't know how to measure the
> > Xft performance exactly, so this is a bit wish-wash. However, since
> > there appears to be such a great difference I wonder if there might be
> > a technical reason for this. E. g. something like this: FreeBSD X11
> > uses hardware acceleration and OS x doesn't.
>
> You'll have to more specific if you want a meaningful answer (i.e. what
> versions of X11 are you running?, which version of Xft is the app trying
> to use? What is the program?)
Eric---a colleague of mine---and I, we were both sick of looking at
all those hideously looking XEmacs fonts all the time (especially when
working with XEmacs under OS X of course). So we hacked some Xft
support into XEmacs lately ...
As Eric already wrote, our Xft-XEmacs now works like a charme both
under Linux and FreeBSD, but using X11 under Mac OS X, the Xft text
output appears tremendously slower compared with the other
systems. Which is of course really unfortunate now ... :-(
So we were wondering whether there are any conceptual differences of
the internal Xft handling of Apple's X11 in contrast to the handling
of the other systems? E.g., is XRender supported by default? And is
there by chance an X11 release available somewhere with profiling
information compiled into it?
Btw, I am running the X11 Beta 3 (XFree86 4.2.1), and I always linked
against the Xft and Xrender libs shipped with X11 (found under
/usr/X11R6/lib/).
Cheers,
Matthias
--
Matthias Neubauer |
Universitdt Freiburg, Institut f|r Informatik | tel +49 761 203 8060
Georges-Kvhler-Allee 79, 79110 Freiburg i. Br., Germany | fax +49 761 203 8052
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