////  timerTest.fs //  examples/tests/rapidProceduralChange////  Created by Eric Levin on 3/9/16.//  Copyright 2016 High Fidelity, Inc.////  This fragment shader is designed to test the rapid changing of a uniform on the timer.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html  uniform float red; vec3 getSkyboxColor() {    float blue = red;    blue = (cos(iGlobalTime) + 1) / 2;    return vec3(1.0, 0.0, blue);}