I'm working with large layouts (8000,4000 and larger) and would like, for the sake of memory and performance, to use layers of Tiled Backgrounds to provide a basic rich background upon which to add a layer of fixed decorative sprites.
Is there a pattern of layers, images with transparency (to define the area of the tiled background for a given layer), and tiled backgrounds (and blending mode) that can do this?
Layer 0 - Trees (the forest, 100% layer coverage)
Layer 1 - Grass, the playing area, driven by a PNG with transparency
Layer 2 - Water, a river (which should also block the characters), again, a PNG with transparency
Layer 3 - Fixed sprites to decorate