Situation: You've got a big scene with huge ceiling. You want the building shadows , so you bake the ceiling in 3ds max and edit it as you want. Since the limit is 4096 of the textures , your tilable ceiling will look awful. Solution: The shadows look ok even at low res , while your ceiling doesn't. So you bake the shadows only , and you leave the ceiling tiled. On the top of the ceiling you create a new plane with the same size , and you put a small Transparent Diffuse texture on it. Now you have tilable ceiling+shadows on it. However , this technique is harder to accomplish when working with objects that are not ceilings. Why to use this technique: It's very natural , fast and easy What are other options: Use beast lighting (not as configurable as baked shadows , sometimes slower) having a big ceiling texture I am busy now , i will continue writing.