clearcoat_normal_fragment_maps.glsl.js

export default /* glsl */ `
#ifndef STANDARD
	#ifdef USE_CLEARCOAT_NORMALMAP

		#ifdef USE_TANGENT

			mat3 vTBN = mat3( tangent, bitangent, clearCoatNormal );
			vec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;
			mapN.xy = clearCoatNormalScale * mapN.xy;
			clearCoatNormal = normalize( vTBN * mapN );

		#else

			clearCoatNormal = perturbNormal2Arb( -vViewPosition, clearCoatNormal, clearCoatNormalScale, clearCoatNormalMap );

		#endif
	#endif
#endif
`;