three/src/renderers/shaders/ShaderChunk/lights_fragment_maps.glsl.js

JavaScript 3D library

export default /* glsl */`
#if defined( RE_IndirectDiffuse )

	#ifdef USE_LIGHTMAP

		vec4 lightMapTexel = texture2D( lightMap, vLightMapUv );
		vec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;

		irradiance += lightMapIrradiance;

	#endif

	#if defined( USE_ENVMAP ) && defined( ENVMAP_TYPE_CUBE_UV )

		#if defined( STANDARD ) || defined( LAMBERT ) || defined( PHONG )

			iblIrradiance += getIBLIrradiance( geometryNormal );

		#endif

	#endif

#endif

#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )

	#ifdef USE_ANISOTROPY

		vec3 iblRadiance = getIBLAnisotropyRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );

	#else

		vec3 iblRadiance = getIBLRadiance( geometryViewDir, geometryNormal, material.roughness );

	#endif

	#ifdef USE_RETROREFLECTION

		#ifdef USE_ANISOTROPY

			vec3 retroIBLRadiance = getIBLAnisotropyRetroRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );

		#else

			vec3 retroIBLRadiance = getIBLRetroRadiance( geometryViewDir, geometryNormal, material.roughness );

		#endif

		iblRadiance = mix( iblRadiance, retroIBLRadiance, saturate( material.retroreflectivity ) );

	#endif

	radiance += iblRadiance;

	#ifdef USE_CLEARCOAT

		clearcoatRadiance += getIBLRadiance( geometryViewDir, geometryClearcoatNormal, material.clearcoatRoughness );

	#endif

#endif
`;