On Tue, 2002-06-25 at 10:57, jaap.hogenberg@nl.abnamro.com wrote:
> Hi all,
>
> This bit of e-mail conversation below is about using gpsdrive on a ipaq.
> It's using gdk-pixbuf to load images , but performance of gdk-pixbuf
> is not so great.
> Would compiling without floating point support or forcing softfloats
> help? What about optimizing ( -O3 , -O4 or more ?
Well, I started making a patch to use integer arithmetic in gdk-pixbuf.
At the moment it uses "long long" quite extensively so you will probably
need to compile with -march=armv4 to get decent performance.
It's worth noting that the only bit of gdk-pixbuf that contains
substantial amounts of floating point is the image scaling code. If you
aren't doing any scaling, and you are still seeing bad performance,
floating point is probably not to blame. In that case, the thing to do
would be to compile with profiling enabled, and try to figure out where
the hot spots are.
p.
Received on Sun Jul 14 12:32:23 2002
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