A Pen created at CodePen.io. You can find this one at https://codepen.io/tdrewry/pen/pOKwdL.

  A WebGL Shader I made to simulate rain falling on your window/screen! Using Javascript for the rain simulation and a WebGL shader for the gooey effect and the refraction of the water droplets. Works both on mobile and on desktop and is fully responsive!

A big thanks to https://tympanus.net/codrops/2015/11/04/rain-water-effect-experiments/ for inspiring me and https://www.shadertoy.com/ for all the useful examples.