declare const _default: "vec3 uncharted2Tonemap(vec3 x) {\n  float A = 0.15;\n  float B = 0.50;\n  float C = 0.10;\n  float D = 0.20;\n  float E = 0.02;\n  float F = 0.30;\n  float W = 11.2;\n  return ((x * (A * x + C * B) + D * E) / (x * (A * x + B) + D * F)) - E / F;\n}\n\nvec3 uncharted2(vec3 color) {\n  const float W = 11.2;\n  float exposureBias = 2.0;\n  vec3 curr = uncharted2Tonemap(exposureBias * color);\n  vec3 whiteScale = 1.0 / uncharted2Tonemap(vec3(W));\n  return curr * whiteScale;\n}\n\nfloat uncharted2Tonemap(float x) {\n  float A = 0.15;\n  float B = 0.50;\n  float C = 0.10;\n  float D = 0.20;\n  float E = 0.02;\n  float F = 0.30;\n  float W = 11.2;\n  return ((x * (A * x + C * B) + D * E) / (x * (A * x + B) + D * F)) - E / F;\n}\n\nfloat uncharted2(float color) {\n  const float W = 11.2;\n  const float exposureBias = 2.0;\n  float curr = uncharted2Tonemap(exposureBias * color);\n  float whiteScale = 1.0 / uncharted2Tonemap(W);\n  return curr * whiteScale;\n}\n\n";
export default _default;