declare const _default: "\n// Energy-conserving (hopefully) Blinn-Phong\nfloat calcLightSpecular(float gloss, vec3 worldNormal, vec3 h) {\n    float nh = max( dot( h, worldNormal ), 0.0 );\n\n    float specPow = exp2(gloss * 11.0); // glossiness is linear, power is not; 0 - 2048\n\n    // Hack: On Mac OS X, calling pow with zero for the exponent generates hideous artifacts so bias up a little\n    specPow = max(specPow, 0.0001);\n\n    return pow(nh, specPow) * (specPow + 2.0) / 8.0;\n}\n\nfloat getLightSpecular(vec3 h, vec3 reflDir, vec3 worldNormal, vec3 viewDir, vec3 lightDirNorm, float gloss, mat3 tbn) {\n    return calcLightSpecular(gloss, worldNormal, h);\n}\n";
export default _default;