uniform sampler2D startImage;
uniform sampler2D endImage;
uniform float progress;
precision mediump float;
/*
{
  "CATEGORIES" : [
    "Wipe"
  ],
  "CREDIT": "Automatically converted from https://www.github.com/gl-transitions/gl-transitions/tree/master/BowTieHorizontal.glsl",
  "DESCRIPTION" : "Automatically converted from https://gl-transitions.com/",
  "ISFVSN" : "2",
  "INPUTS" : [
    {