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Why Rectangle.radius is so performance expensive?

QML and Qt Quick

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eliseev

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#1

I'm on Qt 5.2-beta1 with EGL render on an x86-based system running Linux.

With square rectangles the perormance is alright. But just as soon as I add raduis: N , it drops to nowhere.
I had to remove all rounded rectangles and replace them with images to get decent performance in a very simple UI.

Why radius is so expensive?
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