uniform float scale;
uniform float speed;
uniform int reverse;
uniform vec4 foregroundColor;
uniform vec4 backgroundColor;
uniform float brightness;
uniform float contrast;
precision mediump float;
/*{
    "CREDIT": "Mad Team",
    "DESCRIPTION": "Dunes to Zebra Stripes.",
    "VSN": "1.0",
    "TAGS": "graphic",
    "INPUTS": [