Artifacts in imported GLB and GLTF files

Reported in SF [Link Removed]

Client reports that many of their GLB and GLTF files they use appear with visual artifacts when imported to Twinmotion. These artifacts only appear in Twinmotion and not any other DCC or 3D viewers.

The workaround they found to this issue was to import the file into Adobe Substance and re-export it. The re-exported file would not contain the artifacts.

Issue is consistently reproducible with the file they shared. Does not occur with all GLB or GLTF files.

When viewing the logs, the files that show the artifacts will contain the following message

LogDatasmithGLTFImport: Scene /Users/.../File.glb has 2 nodes, 1 geometries, 1 meshes, 1 materials 

While the re-exported file will display

LogDatasmithGLTFImport: Scene /Users/.../File.glb has 3 nodes, 1 geometries, 1 meshes, 1 materials  

I do not have access to and have not tested re-exporting the file through Adobe Substance.

Download client files from [Link Removed]

1. Open a new TM scene
2. Import the Amonhotep.glb file as geometry
3. View the imported model

Result: The imported model will contain visual artifacts that are not present when viewing in other 3D viewers