Got it working, it seems! Parenting the background model to an intermediate “pivot” node (to which a compass effect is applied to keep it at the position of the camera) gives me the intended behavior .
That didn’t seem to work; the result was the same as just parenting the mesh to the camera without any effects applied. But it’s OK, I seem to have gotten it to work. Thanks for trying to help!
The procedurally generated mesh in my code is as simple as it can get and it didn’t take me much time at all .
And the former can be edited fairly easily at runtime, if you know how .