ty(),
  };

  var rand = function(min, max) {
    if (max === undefined) {
      max = min;
      min = 0;
    }
    return min + Math.random() * (max - min);
  };

  var randInt = function(range) {
    return Math.floor(Math.random() * range);
  };

  var textures = [
    textureUtils.makeStripeTexture(gl, { color1: "#FFF", color2: "#CCC", }),
    textureUtils.makeCheckerTexture(gl, { color1: "#FFF", color2: "#CCC", }),
    textureUtils.makeCircleTexture(gl, { color1: "#FFF", color2: "#CCC", }),
  ];

  va