precision mediump float;

#endif

​

varying vec2 vTexCoord;

uniform sampler2D texture;

uniform vec3 balls[50];

uniform float width;

uniform float height;

​

void main() {

  vec2 uv = vTexCoord;

  uv.y = 1.0 - uv.y;

  vec3 col;

  vec4 _col = texture2D(texture, uv);

  col = _col.rgb;

  float x = gl_FragCoord.x;

  float y = gl_FragCoord.y;

  float sum = 0.0;

  for (int i = 0; i < 50; i++) {

    vec3 ball = balls[i];

    float dx = ball.x - x;

    float dy = ball.y - y;

    float radius = ball.z;

    sum += (radius * radius) / (dx * dx + dy * dy);

  }

  // glitch

  vec2 offset = vec2(0.5*0.05, 0.0)://noise * 0.05, 0.0);

  col.r = texture2D(texture, uv+offset).r;

  col.g = texture2D(texture, uv).g;

  col.b = texture2D(texture, uv-offset).b;

  if (sum >= 0.99) {

    vec3 col1 = mix(vec3(x / width, y / height, 1.0), vec3(0, 0, 0), max(0.0, 1.0 - (sum - 0.99) * 100.0));

    vec3 col2 = step(col1, col

    gl_FragColor = vec4(col2, 1.0);

    return;

  }

  gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);

}