Hi,
This shader is No.1 on the Most popular list on shadertoy.
Shadertoy to PlayCanvas: Shader - Shadertoy BETA
Project: PlayCanvas 3D HTML5 Game Engine
Build: Seaescape - PLAYCANVAS
@will your gonna love this!
For best performance make the screen smaller 
NOTE: License by the creator ( https://creativecommons.org/licenses/by-nc-sa/3.0/ )
Feel free to fork.
Regards,
Saad