declare const _default: "\n\nvoid addReflectionSheen(vec3 worldNormal, vec3 viewDir, float gloss) {\n    float NoV = dot(worldNormal, viewDir);\n    float alphaG = gloss * gloss;\n\n    // Avoid using a LUT and approximate the values analytically\n    float a = gloss < 0.25 ? -339.2 * alphaG + 161.4 * gloss - 25.9 : -8.48 * alphaG + 14.3 * gloss - 9.95;\n    float b = gloss < 0.25 ? 44.0 * alphaG - 23.7 * gloss + 3.26 : 1.97 * alphaG - 3.27 * gloss + 0.72;\n    float DG = exp( a * NoV + b ) + ( gloss < 0.25 ? 0.0 : 0.1 * ( gloss - 0.25 ) );\n    sReflection += calcReflection(worldNormal, 0.0) * saturate(DG);\n}\n";
export default _default;