Can it be modified to be able to fly through? Looks great, but disappears when too close unlike the real fog. I will try to fix this locally, but now have not enough time to research
With cubemap realization (which is used) is not possible (it's not 3d fog, just imitation on the edges of the cube), but I found HDRP fog variant with a lot of billboards, which I had adopted in my game (URP):
It's still no real 3d, but with this approach I can fly through
