Toolbag 5.02b fog tests

A selection of experiments done to test raytraced fog in the Marmoset Toolbag 5.02 beta. This underwater scene was quickly put together with some photogrammetry from a drone video of the MV Plassey shipwreck on the Aran Islands. A lot of detail is missing, so I abandoned UVs and used stock Toolbag materials with tri-planar projection, which works OK in the murky depths.