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  1. Qt
  2. QTBUG-104843

QtQuick 3D leaks memory after destroying View3D

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 6.4.1, 6.5.0 Beta1
    • 6.3.1
    • Quick: 3D
    • None
    • All
    • b335ecdb84 (qt/qtquick3d/dev) 48b7caaabe (qt/qtquick3d/6.4) 48b7caaabe (qt/tqtc-qtquick3d/6.4) b335ecdb84 (qt/tqtc-qtquick3d/dev) 48b7caaabe (qt/qtquick3d/6.4.1) 48b7caaabe (qt/tqtc-qtquick3d/6.4.1)
    • 2022 Qt Quick 3D: Week 39-40, 2022 Qt Quick 3D: Week 41-42

    Description

      As the description says, if you destroy a `View3D` its `QSSGRenderGraphObject` nodes will be leaked because they are scheduled for deletion with `QQuick3DObjectPrivate::derefSceneManager()` but `QQuick3DSceneManager::cleanupNodes()` never runs to reap zombie nodes.

      The attached app demonstrates the issue, run it as `qmlscene6 test.qml` and monitor RAM usage of the qmlscene process, it constantly grows.

      The memory leak has been spotted in https://invent.kde.org/plasma/kdeplasma-addons/-/merge_requests/188.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-97680 Reloading View3D will lead memory leak in 5.15

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              jokarlss Jonas Karlsson
              zzag Vlad Zahorodnii
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              Dates

                Created:
                Updated:
                Resolved:

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