Raindrop Shader Effect

Raindrop FX by Soenke C. "warby" Seidel made with Shaderforge in Unity3D. Heavily inspired by Arkham Knight/Rocksteady

- Pattern is always unique and will never loop.
- Can be tiled/repeated but trails will not move across the seam (almost invisible).
- Amount of rain drops can be dynamically/smoothly ramped up and down.
- Its Cheap: comes at the cost of one 256 render texture and only 3 drawcalls total.
- Raindrops that touch will merge automatically.