[Interest] Scene Graph - Graph example background noise not appearing when OpenGL backend is used

Laszlo Agocs laszlo.agocs at qt.io
Fri May 24 11:59:43 CEST 2024


Hello,

It is not expected to happen, no. The example is expected to work identically with all the supported 3D APIs, but the noise texture is indeed sampled differently when running with OpenGL. There is a patch upcoming to remedy this.

Best regards,
Laszlo

________________________________
From: Interest <interest-bounces at qt-project.org> on behalf of Nuno Santos via Interest <interest at qt-project.org>
Sent: Saturday, May 18, 2024 8:28 PM
To: interestqt-project. org <interest at qt-project.org>
Subject: [Interest] Scene Graph - Graph example background noise not appearing when OpenGL backend is used

Hi,

I’m taking as an example the Qt Scene Graph - Graph in order to pass a texture to a custom material.

However, if I use OpenGL as graphical backend by setting QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL), the noise texture in the background does not appear.

Is this example supposed to work if the backend is the default one?

Does anyone know the reason or the caveat here?

Thanks!

Regards,

Nuno










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