[Zephon]

I think you're talking about Fort Dragonia, where you can't see anything inside a room, right? Well, that's a know issue and it can't be corrected, but you can use the Wireframe option to help you walk around. There is a save point in the bottom left of the room, two doors at the left wall and two doors at the right wall. You can enter them if you just walk against the wall searching for them. After you finish with all the crystals/energy beams, the room will be visible.