Trouble with viewport with its own rootNode

[JaRe]

You mean maybe RootNodeAppState?

Incidentally, that would be a text for the hotfix of the documentation:

@pspeed

assumes that the other node is also in the main scene (a common use-case for viewports is to view a subgraph of the scene)… (…)

In all other cases, it’s more complicated. (…) it requires constant management every frame to call both updateLogicalState and updateGeometricState.

That would warn one or the other.

By the way (when I see SimpleApplication.update() ) it doesn’t have to look RootNodeAppState like this:

 @Override
    public void update(final float tpf
    ) {
        super.update(tpf);

        AppProfiler prof = getApplication().getAppProfiler();
        try {
            if (prof != null) {
                prof.appStep(AppStep.SpatialUpdate);
            }
            rootNode.updateLogicalState(tpf);
            rootNode.updateGeometricState(); 
        } finally {
            if (prof != null) {
                prof.appStep(AppStep.StateManagerUpdate);
            }
        }
    }