KHR_materials_transmission on facetracking project

I’m developing a project based on the template from [three.js: Face Effects | 8th Wall | 8th Wall].

I tried loading a .glb model that includes transparency and refraction, but neither effect seems to be applied.

Is this a limitation or expected behavior of the template?

Both the head.html and the .glb model I’m using are exactly the same as those from [three.js: Gummy Transmission | 8th Wall Playground | 8th Wall] , with Three.js r132 as used in the template.

Hmm, can you share your model so I can take a look? It could be that the model is incorrectly configured.

Additionally you can use the GLTF Transmission test model from Khronos as a baseline to determine if things are working as expected.

I am using the same bear.glb as [three.js: Gummy Transmission | 8th Wall Playground | 8th Wall].
I have also checked transparency and refraction in https://gltf-viewer.donmccurdy.com/.

It seems that all of the facetracking templates are using three.js r123 as the latest version.

Is there any particular reason for this?

I completely understand.
The crucial point lies not in the version of three.js, but in the rendering approach and process
specifically, the use of camTexture.