Simplex noise-based shader

This is a sample generator shader, using 2D simplex noise (as implemented here, with a few parameters exposed to fancy it up.

(Incidentally, if anybody ever used my Lua simplex noise code, posted on the old code exchange, a slightly newer version is available here . You can substitute require("plugin.bit") for require("bitwise_ops.operators") and it ought to be self-contained.)

Works with Corona build #: 
2015.2558
Contributor: 
Star Crunch