Like always this started as something completely different. I created a terrain in Gaea, textured it, liked it, found there could be a little snow as well, and finally made the snow the main character here.
Then I thought, there should be some sort of snow chaos in the air. So I played with a V2 cloud with very low quality (0.1) to get some grainy, flakey look. First, this didn't look good. Second, it took a lot longer to render than with higher quality settings, which sounds rather weird.
Eventually I remembered my own rain file here in the file sharing section, which is made of a V2 cloud:
https://planetside.co.uk/forums/index.php/topic,21035.msg210254.html#msg210254I used it and then modified it (I made the density fractal stretch on the Y-axis, and then used a transform shader to rotate the fractal towards the camera). I tweaked it a bit until I was happy and additionally used a distance shader to avoid big white splotches directly in front of the lens.
At the moment I'm rendering an animated version of it. The camera flying over the landscape with the "snowflakes-cloud" having the same animation like the camera (attached to it, so to speak) and the fractal stretch rotated, so that it's always pointing towards the camera, giving the effect (hopefully) you can see, when you're driving in the car when it's heavily snowing.