Re: control-center 2.13.90 released

[Frederic Crozat <fcrozat mandriva com>]

Le mardi 31 janvier 2006 à 10:14 -0500, Owen Taylor a écrit :
> On Tue, 2006-01-31 at 09:16 -0500, Pat Suwalski wrote:
> > James Henstridge wrote:
> > > If this is the case, has anyone pinged Carl Worth about the slowdown, to
> > > see if it can be fixed? (either on our end by doing the rendering in a
> > > more efficient way, or by adding fast paths to Cairo for the particular
> > > calls).
> > 
> > I wonder if it would make sense to implement the same technique as eog 
> > uses, with a first rough-pass for a very fast application, and a better 
> > pass when it becomes available?
> 
> That's only necessary when we can't make it fast enough to begin
> with! :-)
> 
> I think the first step is for someone to simply spend a little time
> figuring out what is slow:
> 
>  - Gradients
>  - Scaled images
>  - Solid color backgrounds?
> 
> If we are scaling images *via Cairo* that is known to be slow with
> older X servers; if investigation proves that actually is the problem,
> it can be worked around.

I think the problem most people are encountering are with scaled images,
see https://bugs.freedesktop.org/show_bug.cgi?id=4320 . The only way I
found for Mandriva 2006 to ship with decent performance was to always
force cairo to use XCopyArea instead of XRenderComposite 

-- 
Frederic Crozat <fcrozat mandriva com>
Mandriva