. Tried using a 128x128x128 noise with multiple octaves packed into it and it's very nice!!
 => Need to add more octaves
 => Need to test creating a texture in R8 instead of R32F to see the difference in framerate
 => When viewing a volume that's covering the entire screen with 64 steps + 32 steps of shadow, I'm at 500 FPS!
   ==> AND REMEMBER I'M RENDERING FULLSCREEN RES HERE! NOT 1/4 SIZE!

. Need to figure out that pre-integration crap!