qt 4.5, raster and digikam

Hello,

Quick tip for all digiKam users and developers.

Compiled new Qt4.5rc1 (from qt-copy) with raster option, recompiled whole KDE
and it *flies*.

Downsides: lost all OpenGL goodies, excessive blinking in windows decorations
(once again I am blaming Oxygen, have to try other themes). But, guys, it
*flies*. Some things are finally usable. Eg. kdiamond was totally non-
playable, other SVG based apps also were barely working.

I don't know why but apart from SVG programs speed improvement is especially
visible in digiKam. So, maybe recompiling whole environment for is bit too
drastic I encourage all Qt4.5 users to play with

digikam --graphicssystem raster

m.
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On Monday 09 February 2009 22:35:43 Mikolaj Machowski wrote:
> I don't know why but apart from SVG programs speed improvement is
> especially visible in digiKam.

Could be... rendering of thumbnails takes some time, this is also visible for
my Qt4.4.3 installation when using the old nvidia driver and the new 180.22.1
driver. With the old driver, digiKam feels like it is running on a C64 :-)
The new driver lets digikam fly. But I have those nasty artifacts again,
please nvidia fix this soon... I hate it... yesterday my whole screen became
pink :-) THIS is ugly!

Andi

> So, maybe recompiling whole environment for
> is bit too drastic I encourage all Qt4.5 users to play with
>
> digikam --graphicssystem raster
>
> m.
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On Monday 09 February 2009 22:35:43 Mikolaj Machowski wrote:
> Compiled new Qt4.5rc1 (from qt-copy) with raster option, recompiled whole
> KDE and it *flies*.

Unfortunately, plasma crashes on kde 4.2 while using qt 4.5 :(
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On Tuesday 10 February 2009 01:58:20 Marc Deop i Argemí wrote:
> On Monday 09 February 2009 22:35:43 Mikolaj Machowski wrote:
> > Compiled new Qt4.5rc1 (from qt-copy) with raster option, recompiled whole
> > KDE and it *flies*.
>
> Unfortunately, plasma crashes on kde 4.2 while using qt 4.5 :(

I didn't experience such problems. Probably compiling without bells'n'whistles
removes many potential areas of conflict.

m.
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[Marcel Wiesweg]

> Quick tip for all digiKam users and developers.
>
> Compiled new Qt4.5rc1 (from qt-copy) with raster option, recompiled whole
> KDE and it *flies*.
>
> Downsides: lost all OpenGL goodies, excessive blinking in windows
> decorations (once again I am blaming Oxygen, have to try other themes).
> But, guys, it *flies*. Some things are finally usable. Eg. kdiamond was
> totally non- playable, other SVG based apps also were barely working.

That may shed a light on how graphics drivers or other factors influence performance at application level.
I just tested KDiamonds here with Qt4.4.3 and although I dont quite understand the rules, all animations where perfectly smooth and playable. Driver is radeonhd as chosen by Opensuse.

In any case it's good someone tested digikam with Qt4.5 and it works! :-)

Marcel

>
> I don't know why but apart from SVG programs speed improvement is
> especially visible in digiKam. So, maybe recompiling whole environment for
> is bit too drastic I encourage all Qt4.5 users to play with
>
> digikam --graphicssystem raster

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On Tuesday 10 February 2009 18:11:38 Marcel Wiesweg wrote:
> I just tested KDiamonds here with Qt4.4.3 and although I dont quite
> understand the rules, all animations where perfectly smooth and playable.
> Driver is radeonhd as chosen by Opensuse.

I have an old nvidia GeForce 2 MX 400 card. Legacy drivers doesn't fix many
problems + the rest of computer is quite old (Sempron 1200, 756M RAM).

KDiamonds is clone of Bejeweled.

> In any case it's good someone tested digikam with Qt4.5 and it works! :-)

Works great :)

m.
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