RoughnessMipmapper: Fixed breakage when roughnessMap is undefined.

mrdoob · on Aug 27, 2020 · ad7b74752873ca78806652bccadbad0235641606 · ad7b747
1 parent 7bf355c
commit ad7b74752873ca78806652bccadbad0235641606
Showing with 2 additions and 0 deletions.

+2 −0 examples/jsm/utils/RoughnessMipmapper.js
diff --git a/examples/jsm/utils/RoughnessMipmapper.js b/examples/jsm/utils/RoughnessMipmapper.js
@@ -41,6 +41,8 @@ RoughnessMipmapper.prototype = {
 
 	generateMipmaps: function ( material ) {
 
+		if ( 'roughnessMap' in material === false ) return;
+
 		var { roughnessMap, normalMap } = material;
 
 		if ( roughnessMap === null || normalMap === null || ! roughnessMap.generateMipmaps || material.userData.roughnessUpdated ) return;