css Audio - Active file-generic CSS - Active Generic - Active HTML - Active JS - Active SVG - Active Text - Active file-generic Video - Active header Love html icon-new-collection icon-person icon-team numbered-list123 pop-out spinner split-screen star tv
CodePen probably won't work great in this browser. We generally only support the major desktop browsers like Chrome, Firefox, Safari, and Edge. Use this one at your own risk! If you're looking to test things, try looking at Pens/Projects in Debug View.
user profile image

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.


  1. Incredible. Realistic and nice to look at

  2. Finally. Fucking fat

  3. Jaw dropping, great work!

  4. This is amazing! I just love looking at it..

  5. I keep coming back to watch this, beautiful

  6. Wonderful. Full of wonder. Well done!

  7. Bas Groothedde @ImagineProgramming on

    I found myself staring at this for longer than I'd like to admit. It's really calming, great job!

  8. Hi Stefan! Great job! How would you suggest I put this rain as an overlay to an existing full screen Ken-Burns type slideshow background images? I need to substitute the background and foreground images to change the background.

  9. Amazing, wonderful job!

  10. 고마워요. 매우 좋아요. Thank you. very nice.

Leave a Comment Markdown supported. Click @usernames to add to comment.

You must be logged in to comment.