I'm sorry otri, your message feel a little tricky for me, I'm not understanding every line.
For the knowledge I have, I know that in Unity you can pre-build a mesh and experience it with the headset, like robot-room for example. But robot room is not actually fitting into the room that you are in, so if you come closer to an actual wall, you will see the purple mesh coming out. It comes out from scanned mesh, but is it implemented in unity or what? where is this warning coming from?
What do you mean for Native BE development? I thought it was necessary to une Unity, am I wrong?
I can't find BridgeEngineAppController.mm in the mixed reality project, how and where am I supposed to find it?
Sorry for long questions, hope that this will be helpful to others as well