vec4 jet (float x) {
  const float e0 = 0.0;
  const vec4 v0 = vec4(0,0,0.5137254901960784,1);
  const float e1 = 0.125;
  const vec4 v1 = vec4(0,0.23529411764705882,0.6666666666666666,1);
  const float e2 = 0.375;
  const vec4 v2 = vec4(0.0196078431372549,1,1,1);
  const float e3 = 0.625;
  const vec4 v3 = vec4(1,1,0,1);
  const float e4 = 0.875;
  const vec4 v4 = vec4(0.9803921568627451,0,0,1);
  const float e5 = 1.0;
  const vec4 v5 = vec4(0.5019607843137255,0,0,1);
  float a0 = smoothstep(e0,e1,x);
  float a1 = smoothstep(e1,e2,x);
  float a2 = smoothstep(e2,e3,x);
  float a3 = smoothstep(e3,e4,x);
  float a4 = smoothstep(e4,e5,x);
  return max(mix(v0,v1,a0)*step(e0,x)*step(x,e1),
    max(mix(v1,v2,a1)*step(e1,x)*step(x,e2),
    max(mix(v2,v3,a2)*step(e2,x)*step(x,e3),
    max(mix(v3,v4,a3)*step(e3,x)*step(x,e4),mix(v4,v5,a4)*step(e4,x)*step(x,e5)
  ))));
}
#pragma glslify: export(jet)