My tileset is a quad-tree of terrain tiles with increasingly higher resolution and lower geometricError to replace each tile with 2x2 higher resolution tiles recursively. The root tile sets refine = REPLACE, the rest of the tiles inherit this and it all works fine.
Now I want to add features to a medium level and let them stay visible all the way down to the highest level. But if I would add them to the medium tile where they belong, the parent would think that it should REPLACE itself with these when I really want to ADD them. Since I can’t control the refinement per child but only per parent, is it impossible to combine REPLACE and ADD other than in the leaf tiles?
I guess I could use one terrain tileset with REPLACE and a another feature tileset with ADD, and then a parent tileset referring both these. But I still think there’s something I’m missing here, should I be able to combine ADD and REPLACE in non-leaf levels?