vec3 colorLevels[9] = vec3[9](
    vec3(234.0,51.0,61.0),
    vec3(235.0,70.0,105.0),
    vec3(178.0,119.0,37.0),
    vec3(247.0,206.0,70.0),
    vec3(149.0,232.0,71.0),
    vec3(103.0,200.0,250.0),
    vec3(68.0,132.0,245.0),
    vec3(40.0,3.0,143.0),
    vec3(18.0,5.0,62.0)
);

    float lum = dot(color.rgb, vec3(0.3, 0.59, 0.11));
    lum = 1.0 - lum;
    float d = 1.0 / 9.0;//Разделим значение серого на 9 индивидуальный level
    int i = int(lum / d);
    i = clamp(i, 0, 8);

    fragColor = vec4(colorLevels[i]/255.0, 1.0);

vec3 colorLevels[9] = vec3[9](
    vec3(234.0,51.0,61.0),
    vec3(235.0,70.0,105.0),
    vec3(178.0,119.0,37.0),
    vec3(247.0,206.0,70.0),
    vec3(149.0,232.0,71.0),
    vec3(103.0,200.0,250.0),
    vec3(68.0,132.0,245.0),
    vec3(40.0,3.0,143.0),
    vec3(18.0,5.0,62.0)
);

float blur_gauss(float bhqp, float x) {
  return exp (-(x * x) / (2.0 * bhqp * bhqp));
}

vec4 blur(vec2 uv, sampler2D source, float Intensity) {
  const int iterations = 4;
  int halfIterations = iterations / 2;
  float sigmaX = 0.1 + Intensity * 0.5;
  float sigmaY = sigmaX;
  float total = 0.0;
  vec4 ret = vec4 (0., 0., 0., 0.);
  float step = 0.00390625;
  for (int iy = 0; iy < iterations; ++iy) {
    float fy = blur_gauss(sigmaY, float (iy - halfIterations));
    float offsety = float (iy - halfIterations) * step;
    for (int ix = 0; ix < iterations; ++ix) {
      float fx = blur_gauss(sigmaX, float (ix - halfIterations));
      float offsetx = float (ix - halfIterations) * step;
      total += fx * fy;
      vec4 a = texture2D (source, uv + vec2 (offsetx, offsety));
      a.rgb *= a.a;
      ret += a * fx * fy;
    }
  }
  return ret / total;
}


void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
    vec2 uv = fragCoord.xy / iResolution.xy;

    //vec4 color = texture2D(iChannel0, uv);
    vec4 color = blur(uv, iChannel0, 3.0);//Размыто

    color.rgb += vec3(1.0,0.0,0.5)*color.rgb*0.2;//Свечение

    float lum = dot(color.rgb, vec3(0.3, 0.59, 0.11));
    lum = 1.0 - lum;
    float d = 1.0 / 9.0;
    int i = int(lum / d);
    i = clamp(i, 0, 8);

    fragColor = vec4(colorLevels[i]/255.0, 1.0);
}