[Interest] How to prevent custom material shader to be constantly rendered when there are no updates?

[Nuno Santos]

Hi,

I’m trying to avoid Qt to repaint a custom QQuickItem that has a custom material which is an heavy shader, when there are no changes.

Even when QQuickItem::updatePaintNode is not called, QSGMaterialShader::updateUniformData is always called and the GPU usage is still high.

It seems that the only way I can prevent this issue is by removing the item from the scene. Is this normal?

Does anyone if there is a way?

Thanks!

Regards,

Nuno