QtDataVisualization Surface3D QML item crashes app when using Qt6

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The following QML script works when using Qt 5.15.9 but crashes when using 6.2.4 and 6.3.0.

import QtQuick 2.15
import QtQuick.Window 2.15
import QtDataVisualization 1.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Surface3D {}
}

The Qt Quick 2 Spectrogram Example (which uses the Surface3D item) works with 6.3.0.

I'm using Windows 10 and installed Qt with MinGW 11.2.0 64-bit (for Qt6) and MinGW 8.1.0 64-bit (for Qt5).
Is there any reason this shouldn't be working with Qt6? Any guidance is much appreciated!

MahmutVeli

I face the same problem, when using Surface3D in Qt 6.3 the app crashes on startup. For Qt 5 it works fine

MahmutVeli

I find the solution, from the documentation:
it is necessary to define the rendering backend explicitly either on your environment variables, or in your application main. It can be defined by adding qputenv("QSG_RHI_BACKEND", "opengl"); in the beginning of your main function.

https://forum.qt.io/topic/136770/qtdatavisualization-surface3d-qml-item-crashes-app-when-using-qt6/2

? Offline

Great, thank you! Here's the link to the documentation for anyone who is curious.