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List:       kde-panel-devel
Subject:    Re: Plasma::Svg question
From:       Rafael =?iso-8859-15?q?Fern=E1ndez_L=F3pez?= <ereslibre () kde ! org>
Date:       2008-10-06 20:47:06
Message-ID: 200810062247.08947.ereslibre () kde ! org
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Hi,

> you can also call setOpacity on the QPainter directly, but that can *very*
> slow and that above method is usually faster, and at worst the same speed.

Aaron explained it pretty well, and please, don't use setOpacity (as also 
Aaron did suggest). I want to put emphasis here... since setOpacity disables 
all the hardware acceleration (as Fredrik said: "the kiss of death"). Check 
out this techbase tutorial for further information:

http://techbase.kde.org/Development/Tutorials/Graphics/Performance


Regards,
Rafael Fernández López.

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