Why my MergeMeshes breaks MultiMaterial?

Questions
1

I created a gable roof and want to return it as a single mesh with multi materials. But the result is off if i enable the last merge step. You can see it still has multiple material in it, but one of the edge now applied with wrong material. What did i miss here? Thanks in advance!

2

Checking!

3

That was a nasty one!

Thanks a lot for the report!

Fix MergeMeshes issues with multimaterials by deltakosh · Pull Request #17130 · BabylonJS/Babylon.js

3 Likes
4

Thanks for looking into this and the fix!