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Forum Update on Monday, May 27th 2025

Performance issue in QgraphicScene when we add items dynamically

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  • J Offline
    J Offline
    Jaisan
    wrote on last edited by Jaisan
    #1

    One of my application, i am dynamically adding GraphicItem in scenes, on every new addition scene updates all items in the scene.
    Due to which I am getting performance issue < It takes More Memory and Process time >.

    Is there any way to draw the newly added items alone in scene dynamically .

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      You can test various version of the QGraphicsScene::ViewportUpdateMode.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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