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Thread: QGraphicsView performance in 4.6

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    Default QGraphicsView performance in 4.6

    Hi,

    the "What's New in Qt 4.6" page says:

    "Performance Optimizations: Rewritten the QGraphicsView rendering algorithm."

    Has anybody tested what this means? Is there a real performance boost? Does it help for the performance problem of QGraphicsView when handling many items.

    Thanks

    Lodorot

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    Default Re: QGraphicsView performance in 4.6

    Quote Originally Posted by Lodorot View Post
    Does it help for the performance problem of QGraphicsView when handling many items.
    What performance problem are you referring to? Handling many items is usually not a cause of significant slowdowns by itself. It's more often caused by other factors (i.e. complexity of items) - GV has been tested against millions of items with a satisfactory result.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

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    Default Re: QGraphicsView performance in 4.6

    Quote Originally Posted by wysota View Post
    GV has been tested against millions of items with a satisfactory result.
    The problem comes if items are moving or changing shape than already 500 items could result in poor performance and the CPU goes really up.


    Lodorot

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