declare const _default: "\n#ifdef STD_NORMAL_TEXTURE\n    uniform float material_bumpiness;\n#endif\n\n#ifdef STD_NORMALDETAIL_TEXTURE\n    uniform float material_normalDetailMapBumpiness;\n\n    vec3 blendNormals(vec3 n1, vec3 n2) {\n        // https://blog.selfshadow.com/publications/blending-in-detail/#detail-oriented\n        n1 += vec3(0, 0, 1);\n        n2 *= vec3(-1, -1, 1);\n        return n1 * dot(n1, n2) / n1.z - n2;\n    }\n#endif\n\nvoid getNormal() {\n#ifdef STD_NORMAL_TEXTURE\n    vec3 normalMap = {STD_NORMAL_TEXTURE_DECODE}(texture2DBias({STD_NORMAL_TEXTURE_NAME}, {STD_NORMAL_TEXTURE_UV}, textureBias));\n    normalMap = mix(vec3(0.0, 0.0, 1.0), normalMap, material_bumpiness);\n\n    #ifdef STD_NORMALDETAIL_TEXTURE\n        vec3 normalDetailMap = {STD_NORMALDETAIL_TEXTURE_DECODE}(texture2DBias({STD_NORMALDETAIL_TEXTURE_NAME}, {STD_NORMALDETAIL_TEXTURE_UV}, textureBias));\n        normalDetailMap = mix(vec3(0.0, 0.0, 1.0), normalDetailMap, material_normalDetailMapBumpiness);\n        normalMap = blendNormals(normalMap, normalDetailMap);\n    #endif\n\n    dNormalW = normalize(dTBN * normalMap);\n#else\n    dNormalW = dVertexNormalW;\n#endif\n}\n";
export default _default;