MLT & Gas

First attempt at MLT and scattering.  Actually, it really has nothing to do with MLT...I should say first attempt as scattering in CUDA, and massive convergence speedups thanks to the ever-magical MLT!

This time I actually read a proper paper on the subject rather than hacking the math, so the scattering looks much better.  I only let this one render for a minute or so:

To be honest, the MLT-style low-frequency noise gives the gas a really nice wispy effect!  Much preferred over high-frequency noise.  Hmm...now how do I get that wispy effect with a density function?