So what you are basically saying is that Mark's function to dtermine is an entity is visible or not does not first check against the object's bounding box before attempting to check against the polygons themselves.
And that you should check against the level first, because the level will almost always occlude most flares, whereas individual small decorative entities in a level will only very rarely occlude any flares.
And that you should check against the level first, because the level will almost always occlude most flares, whereas individual small decorative entities in a level will only very rarely occlude any flares.