Shading a Group (Node)

Suppose I have two distinct nodes, a Character and a Scene. The Scene contains a bunch of geometries, i.e. trees, plants, whatever. If I want to apply a shader to the Scene as a whole, would I attach a quad overlay to the Scene node and shade that? Or is there some better way?

Thanks in advance!

Yes, thats what a post filter (e.g. water) does :slight_smile:
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