cannot export transparent textures (nor select png)

[coderofsalvation]

I cannot seem to export transparent png's in my gltf, NOR select PNG as export option

Steps to reproduce the behavior:

1. create a mesh
2. apply a material using a transparent png in the shader editor:

3. set blend mode to 'alpha blend' in material properties
4. now export the gltf (NOTE: for some reason, you can't select png)

5. test the model at https://gltf-viewer.donmccurdy.com

Expected behavior
transparent textures

.blend file/ .gltf
https://filebin.net/3ab7vwn9httastq1/theme.gltf?t=v81o3lxp

Version

• OS: windows
• Blender Version 2.83 + 2.91

[scurest]

File looks okay to me. It seems only Three has an issue.

In Three

Others (babylon, blender, this)

@donmccurdy Can you look?

[donmccurdy]

This was fixed in mrdoob/three.js#20376 – my viewer is behind, but it should work fine in newer versions of three.js.

[coderofsalvation]

Ah Ok, so it's not the exporter.
Thanks a lot, wasn't really sure how to test it.
Next time I'll try to import the exported gltf with blender to test (no idea why I didn't think of that).