GLTF export does not include IOR

[OpaKnoppi]

When exporting a file via gltf either in .glb or .gltf, there will be no ior value included in the material info.

Used blender file and exported .gltf cornell.zip

Version

• Windows 10
• Blender Version 4.1 and 4.2.3 LTS

[julienduroure]

Hello, Currently, we export IOR only when this value is needed for the material (so when you are using one of this other extension:

• KHR_materials_transmission
• KHR_materials_volume
• KHR_materials_specular

What is your use case about wanted to export IOR on a material where IOR does'nt have any effect?