Traceback errors on export from Blender 2.8

First, I’d like to say that you folks are doing killer work, and I enthusiastically look forward to being able to use this regularly with the Principled BSDF shader in the upcoming Blender release.

That said, I’m not sure how well the exporter should be working currently, as I understand it’s still in development, as is Blender 2.8, which makes it difficult for me to pinpoint the source of the errors.

I can’t seem to export a simple cube to gltf or glb using the latest versions of both the exporter and Blender 2.8 with the settings below:

I use practically the same workflow and settings with Blender 2.79b and the glTF-Blender-Exporter, except I use the included glTF Metallic Roughness PBR nodes. In this case, I’m trying to use Blender’s Principled BSDF shader and I’m getting the following errors:

This seems to be happening specifically when I check Export selected only, which I use often in my workflow.

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I’m getting similar errors when trying the other options:

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The only combination that appears to work is this:

However, it only seems to work the first time. After trying to re-export with those same settings, the resulting file is corrupt. It also exports all layers and doesn’t let you select objects, which isn’t typically ideal.

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Here is a zip with the .blend file and a sample of the corrupt file: exporter_test.zip

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Blender version:

Exporter version:

OS: Windows 10 x64

[julienduroure]

@emackey This error is already fixed in master and in blender 2.8 git. This will be available in tomorrow’s build

Still have to work on layer export option (see my TODO list on first comment of this issue )

[julienduroure]

Is now in Blender repo