Merge pull request #15613 from Mugen87/dev19

Mesh: Improve handling of material index.

Merge pull request #15613 from Mugen87/dev19
Mesh: Improve handling of material index.
0aa87c99 · Mr.doob · GitHub · 7fe9a41c · 372cceb9 · 0aa87c99
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src/objects/Mesh.js src/objects/Mesh.js +2 -0

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--- a/src/objects/Mesh.js
+++ b/src/objects/Mesh.js
@@ -264,6 +264,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 								if ( intersection ) {

 									intersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics
+									intersection.face.materialIndex = group.materialIndex;
 									intersects.push( intersection );

 								}
@@ -321,6 +322,7 @@ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
 								if ( intersection ) {

 									intersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics
+									intersection.face.materialIndex = group.materialIndex;
 									intersects.push( intersection );

 								}