`KHR_materials_transmission` support for Babylon 4.2.0

Questions
1

Hi folks,

I was trying to load a gltf file into Babylon 4.2.0. That gltf file is using the KHR_materials_transmission extension.

Issue: In the render, the transparent part was loaded completely as an opaque material, losing the “see through” look at all. When I inspected the scene, I found the transmissionTexture.png texture originally came with the gltf couldn’t be able to be plugged to the PBR material properly. And when I tried to load the exact same gltf in 5.0.0-beta.7, the issue is gone, all materials are rendered accurately.

Question: Just wondering, is there a way we can have the gltf loaded correctly in 4.2.0 without upgrading the engine version? Or any other solutions to this issue.

Thank you very much!
Oscar

2

Unfortunately no, this is quite a massive change and it requires the new v5 engine

2 Likes
3

Got it. Thank you very much for the fast response @Deltakosh !