Why Rectangle.radius is so performance expensive?



  • 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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