Wrong roughness in AR mode (iPhone)
Author: MastaManCreated Jan 12, 2026Updated Aug 8, 2026
You can reproduce bug when you change Metallic-roughness texture from Damaged-helmet to Lantern-pole and back by this link https://modelviewer.dev/examples/scenegraph/#swapTexturesExample
So if nothing changed and pressed AR mode (iPhone) everything is ok. But if you change Metallic-roughness texture to other and select Damaged-helmet then go to AR mode (iPhone) roughness is wrong
And results examples:
Source: google/model-viewer