export default /* glsl */`
#ifdef USE_CLEARCOAT_NORMALMAP

	vec3 clearcoatMapN = texture2D( clearcoatNormalMap, vClearcoatNormalMapUv ).xyz * 2.0 - 1.0;
	clearcoatMapN.xy *= clearcoatNormalScale;

	clearcoatNormal = normalize( tbn2 * clearcoatMapN );

#endif
`;