Export (geometry & appearance) Not Like Blender Original about gltf-blender-exporter HOT 6 CLOSED

Thank you for your detailed response. That information helps a lot and I will be able to bring it to the Blender BOFs during SIGGRAPH. I see that knowing the target and how you are going to get there is still very important.

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Okay, I analyzed the model regarding geometry:

The screenshot is from the edit mode from the front roof. Also, I enabled face normal rendering. As you can see - the normals are not correct. The reason, why Blender renders this correct is, that the mesh is marked double sided.
I assume, the rest of the geometry artifacts are the same.
As described in the user documentation, the double sided flag comes from the material and not the mesh.
https://github.com/KhronosGroup/glTF-Blender-Exporter/blob/master/docs/user.md
Thats the reason, why you have these artifacts.
How to solve this? Recalculate/set the normals at the errenous places.

Appearance:
Also mentioned in the docs, the Blender material is not a PBR glTF 2.0 material and so no materials are exported. This means, the default material is used. So all color, texture information, alpha etc. gets lost.

To summarize:

• It is not a viewer and/or exporter bug.
• The scene needs some rework to render properly.

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Thanks a lot that you took so much time to investigate this. Sorry, that I cannot help u further.

There will be an extension to glTF 2.0, called KHR_materials_cmnBlinnPhong. With this extension, it will also be possbile to export these materials as well.

Meanwhile, you need to convert the materials to PBR ones.

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Maybe you have a look at this:
#53
We received a pull request, that as much PBR materials as possible are exported - without breaking the metallic roughness workflow.

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Hi, I'm experiencing a similar issue with transparent materials when exporting them to .glb format. I tried exporting the sample polly scene to binary format and then loaded it with http://sandbox.babylonjs.com. Interestingly the transparent display doesn't appear transparent when I export the polly scene, however it does appear transparent when I load the glTF-Blender-Exporter/polly/project_polly.glb file. I installed the glTF exporter add-on corresponding to master (commit 504a525) and I was using Blender 2.79b 2018-03-22 for Mac. I was running macOS High Sierra 10.13.4. I checked the Export materials check-box is marked when doing the export and the other materials look apparently correct, should I enable other export settings maybe?

Thanks for all the great work!

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@MiguelAlgaba thanks for catching this — I've filed a new issue: #199

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