[velcrovan]

If only the “just snow” one would have had the snow floating down (instead of, inexplicably, up)!

[keyle]

I added DIRECTION, and use it agains the `q`. 0.25 makes them fall slowly.

    #define DIRECTION 0.25

    // usage:
    vec2 q = DIRECTION * uv * (1.0 + fi * DEPTH);

be sure to tweak the rest, it's fun!

[phatskat]

The shader is pretty small, I bet a little fiddling with changing minuses to plus signs would fix that right up (or down)!

[volemo]

Simply rotate your monitor. /j