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

JavaScript 3D library

export default /* glsl */`
#ifdef USE_LIGHTMAP

	vec4 lightMapTexel = texture2D( lightMap, vUv2 );
	vec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;

	#ifndef PHYSICALLY_CORRECT_LIGHTS

		lightMapIrradiance *= PI;

	#endif

	reflectedLight.indirectDiffuse += lightMapIrradiance;

#endif
`;