[IvoDankolov]

Lovely effect! Particularly enjoyed how it seems to 'fake' refraction by sampling higher or lower from the background based on the drop shape. The trails squishing back into raindrops to simulate surface tension is also a pretty nice touch, though perhaps a bit over-exaggerated.

One caveat is the merging of the drops sometimes looks quite unnatural, but I'm not sure there's any simple way to represent that as just a couple of textures and a transformation, as real drops would have attractive forces on a molecular level pulling them towards one another once they're bridged, deforming pretty unevenly.

[lbebber]

There was an attempt of making the drops merge more naturally, but it was affecting the refraction effect, which I deemed was more important.

It should be solvable though, I just couldn't get the values right at the time.

(Also thanks!)