Really interesting break down by Leah Augustine on how she created this landscape in UE4. A lot of interesting solutions in here.
“When creating the snow textures in Substance Designer, I also created a detail normal of simple noise that I used in conjunction with the base normal. I found that when you use subsurface you tend to visually lose normal information, flattening out your material. Since I knew I wanted close up shots, I wanted to exaggerate the normals a bit more to counteract this.
I personally think that a detail normal and subsurface scattering is what helped achieve more realistic snow for this project. Subsurface, in my opinion, really brought it all together. It helps give the snow better highlights around the edges and creates the appearance of light shining through it. Subsurface can be costly, but it does make a difference .“
I tried making some snow in Octane and C4d and failed tragically. Will have to landscapes another shot at some point.