I followed this video to create realistic lighting for my architectural model but it seems I am missing something. My problem is that with a single directional light the rear side of the house is dark and player can’t see the texture. This problem gets fixed once I add the second directional light in opposite direction. I do have to remove shadow from that light to make it realistic. The exterior now looks I guess as best as it can, but now the interior is screwed up, because the 2nd light I guess shines through and brightens up walls that should be dark. Please see this link for screenshots.