How to properly display a gltf model with negative scale in a group?

Questions
1

Hi, I using three.js @r110 to load this model, but it did not display properly

image
image2262×1038 406 KB

And in babylonjs sandbox it looks right

image
image2346×1158 191 KB

How can I fix this problem?

flip.gltf (28.4 KB)

2

Um, when loading the file into babylon sandbox it looks actually like so:

image
image2540×758 147 KB

3

sorry，I upload the wrong file, need to double side materials doubleflip.gltf (28.5 KB)

4

Okay, now I can reproduce. It seems this visual glitch happens because of the following issue:

It would be great if you can leave a post at github so everyone knows you have also faced this bug.

1 Like
5

thank you.