. Finally managed to improve slices using "pre-integration"
 => At the moment I'm simply running a small loop of 4 sub-steps that integrate scattering more precisely
 => I need to check with a small 2D table to see if the framerate increases even more!
. Tried using a pre-integration table but I realized it required 3 dimensions: 2 densities and the time step!
 => Sampling a 2D table IS faster than 4 sub-steps integration
 => So, to attempt to reduce the 3D texture to a 2D one, I tried to use a fixed time step but we lose too much precision and we require more steps
 => Finally, the benefit of sampling a table is lost due to more steps required!

. Now focusing on using mips!
 => Should be a huge saver!
. Mips are NOT a time saver at all! :(
. 360 => 480 FPS by packing noise in R8 instead of R32F! ^^
. Attempted to force shadow plane horizontal but failed for now...
 => Need to try again!