Hmm. In my MMRPG world it's not feasable to have every interior it's own level. At least it's not what I wanted to do. Based on my research though I was toying with the idea of having each building as it's own entity and doing an LOD for each one allowing for only exterior rendering at distance and then detailed interior for the detail LOD.

Was curious about the fog and thinking abotu it further I think you are right. The fog effect is just that. An effect. The clip plane is still the almighty holder of the FPS key. I am going to do a test and convert a couple buildings to entities and do an LOD on them for the interiors.

Thanks for the feedback.

Mark