The best way IMO to to illuminate an enclosed space is to disable shadow casting by the walls, they can still receive shadows. The only problem is if you want to combine this with a direct light source that specifically gives the impression of light shining through a window. Creating a specific, off camera, 'window' mask for the sunlight may be the best way to do this. In defense of CL, shadow mapping for omni lights is somewhat more complex (and resource hungry) than shadowmapping simple directional lights, but it would have been nice, nevertheless, to have been given the option. Bill