This is a known issue, already reported multiple times on upstream repository.
This need quite some important changes to be fixed, so will not be fixed in short term

Jan 30 2021, 6:54 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) abandoned D9660: gltf exporter exports incorrect transforms when exporting nodes that have a rotation or scale other than the identity.

This PR is now merged (managed upstream)

Jan 30 2021, 6:52 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) committed rBA9d30d2bccb15: Merge branch 'blender-v2.92-release' (authored by Julien DUROURE (julien)).

Merge branch 'blender-v2.92-release'

Jan 30 2021, 6:49 PM

Julien DUROURE (julien) committed rBA3e7209f9f289: glTF exporter: fix collection offset when rotated or scaled (authored by Julien DUROURE (julien)).

glTF exporter: fix collection offset when rotated or scaled

Jan 30 2021, 6:48 PM

Jan 17 2021

Julien DUROURE (julien) committed rBA377222442fe1: Merge branch 'blender-v2.92-release' (authored by Julien DUROURE (julien)).

Merge branch 'blender-v2.92-release'

Jan 17 2021, 9:43 AM

Julien DUROURE (julien) committed rBAebdf1861dc56: glTF importer: Use Separate R node for clearcoat textures (authored by Julien DUROURE (julien)).

glTF importer: Use Separate R node for clearcoat textures

Jan 17 2021, 9:42 AM

Julien DUROURE (julien) committed rBA1715c1e8f528: Merge branch 'blender-v2.92-release' (authored by Julien DUROURE (julien)).

Merge branch 'blender-v2.92-release'

Jan 17 2021, 9:38 AM

Julien DUROURE (julien) committed rBAd7f8d9a4f919: glTF importer: make NLA track order match glTF animation order (authored by Julien DUROURE (julien)).

glTF importer: make NLA track order match glTF animation order

Jan 17 2021, 9:38 AM

Jan 15 2021

Julien DUROURE (julien) committed rBA2ac013ce0ba3: glTF: Bump to 1.6.0 version in master after blender-2.92-release branch creation (authored by Julien DUROURE (julien)).

glTF: Bump to 1.6.0 version in master after blender-2.92-release branch creation

Jan 15 2021, 7:17 PM

Jan 4 2021

Julien DUROURE (julien) committed rBA59f60554f18c: glTF importer: create placeholder images for files that can't be loaded (authored by Julien DUROURE (julien)).

glTF importer: create placeholder images for files that can't be loaded

Jan 4 2021, 9:03 PM

Julien DUROURE (julien) closed T75550: Exporting gltf with draco compression messes up the vertex color as Resolved.

This is fixed by eb29a12da48e

Jan 4 2021, 9:00 PM · Import/Export, Add-ons (Community)

Julien DUROURE (julien) committed rBAeb29a12da48e: glTF importer/exporter: Draco decoder + encoder fixes (authored by Julien DUROURE (julien)).

glTF importer/exporter: Draco decoder + encoder fixes

Jan 4 2021, 8:56 PM

Julien DUROURE (julien) committed rBA48ec56bde5fc: glTF importer: removed future deprecated encoding arg to json.loads (authored by Julien DUROURE (julien)).

glTF importer: removed future deprecated encoding arg to json.loads

Jan 4 2021, 8:37 PM

Julien DUROURE (julien) committed rBA70efc485eca8: glTF exporter: roundtrip all texture wrap modes (authored by Julien DUROURE (julien)).

glTF exporter: roundtrip all texture wrap modes

Jan 4 2021, 8:36 PM

Jan 2 2021

Julien DUROURE (julien) added a comment to T83685: Import or export of GLB crashes Blender.

Hello,
Currently, I can't reproduce neither (tested on stable 2.91 or today's build) on linux Mint

Jan 2 2021, 1:38 PM · BF Blender

Dec 13 2020

Julien DUROURE (julien) committed rBA285deaf22c27: glTF importer: Show specific error when buffer resource is missing (authored by Julien DUROURE (julien)).

glTF importer: Show specific error when buffer resource is missing

Dec 13 2020, 6:11 PM

Dec 6 2020

Julien DUROURE (julien) added a comment to T82974: gltf file imported but no principled material created.

Ok, thanks!

Dec 6 2020, 10:05 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) closed T82974: gltf file imported but no principled material created as Archived.

Dec 6 2020, 10:05 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) claimed T83131: gltf exporter exports incorrect transforms when exporting nodes that have a rotation or scale other than the identity.

Dec 6 2020, 8:01 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) changed the status of T83131: gltf exporter exports incorrect transforms when exporting nodes that have a rotation or scale other than the identity from Needs Information from User to Confirmed.

Ok, with last info from user on glTF repo, I can reproduce

Dec 6 2020, 8:01 PM · Add-ons (BF-Blender)

I can't reproduce.

Dec 6 2020, 8:11 AM · Add-ons (BF-Blender)

Julien DUROURE (julien) committed rBA9ff0d983ee49: glTF exporter: Fix T83426: fix texture filtering (authored by Julien DUROURE (julien)).

glTF exporter: Fix T83426: fix texture filtering

Dec 6 2020, 7:54 AM

Julien DUROURE (julien) closed T83426: Blender GLTF Exporter - Missing texture filtering as Resolved by committing rBA9ff0d983ee49: glTF exporter: Fix T83426: fix texture filtering.

Dec 6 2020, 7:54 AM · Add-ons (BF-Blender), BF Blender

Julien DUROURE (julien) committed rBAc5a84e2e1ad0: gltf exporter: Fix T83188: avoid crash when background exporting (without UI) (authored by Julien DUROURE (julien)).

gltf exporter: Fix T83188: avoid crash when background exporting (without UI)

Dec 6 2020, 7:50 AM

Julien DUROURE (julien) closed T83188: Can not call bpy.ops.export_scene.gltf when running Blender in the background (no UI) as Resolved by committing rBAc5a84e2e1ad0: gltf exporter: Fix T83188: avoid crash when background exporting (without UI).

Dec 6 2020, 7:50 AM · Add-ons (BF-Blender)

Dec 5 2020

Julien DUROURE (julien) added a comment to T83426: Blender GLTF Exporter - Missing texture filtering.

Yes, I will merge it tomorrow

Dec 5 2020, 10:23 PM · Add-ons (BF-Blender), BF Blender

Julien DUROURE (julien) added a comment to T83426: Blender GLTF Exporter - Missing texture filtering.

I opened a ticket in upstream repository: https://github.com/KhronosGroup/glTF-Blender-IO/issues/1285

Dec 5 2020, 11:40 AM · Add-ons (BF-Blender), BF Blender

Dec 3 2020

Julien DUROURE (julien) edited projects for T83188: Can not call bpy.ops.export_scene.gltf when running Blender in the background (no UI), added: Add-ons (BF-Blender); removed BF Blender.

Dec 3 2020, 10:48 AM · Add-ons (BF-Blender)

Julien DUROURE (julien) changed the subtype of T83188: Can not call bpy.ops.export_scene.gltf when running Blender in the background (no UI) from "Report" to "Bug".

Dec 3 2020, 10:47 AM · Add-ons (BF-Blender)

Julien DUROURE (julien) changed the status of T83188: Can not call bpy.ops.export_scene.gltf when running Blender in the background (no UI) from Needs Triage to Confirmed.

Dec 3 2020, 10:46 AM · Add-ons (BF-Blender)

Dec 1 2020

Julien DUROURE (julien) committed rBAd5c0d4b77c15: glTF: implement occlusion strength (importer & exporter) (authored by Julien DUROURE (julien)).

glTF: implement occlusion strength (importer & exporter)

Dec 1 2020, 8:53 PM

Julien DUROURE (julien) added a comment to D9642: Draco library for glTF import/export.

Any change this Differential to be reviewed and merge for 2.92?

Dec 1 2020, 3:13 PM · Platforms, Builds, Tests & Devices

Julien DUROURE (julien) closed T78926: Materials export blank if unconnected Principled BSDF node is anywhere in a "Background" material during gltf 2.0 export as Resolved.

Fixed by 5088c8d9d735

Dec 1 2020, 3:11 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) added a comment to T83188: Can not call bpy.ops.export_scene.gltf when running Blender in the background (no UI).

I created a ticket in upstream repository: https://github.com/KhronosGroup/glTF-Blender-IO/issues/1281

Dec 1 2020, 2:55 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) added a comment to T83131: gltf exporter exports incorrect transforms when exporting nodes that have a rotation or scale other than the identity.

I created a ticket in upstream repository: https://github.com/KhronosGroup/glTF-Blender-IO/issues/1280

Dec 1 2020, 2:53 PM · Add-ons (BF-Blender)

Nov 30 2020

Julien DUROURE (julien) committed rBAcde7574c05bd: glTF: code cleanup (authored by Julien DUROURE (julien)).

glTF: code cleanup

Nov 30 2020, 6:49 PM

Julien DUROURE (julien) committed rBA5088c8d9d735: glTF exporter: take care of active output node (authored by Julien DUROURE (julien)).

glTF exporter: take care of active output node

Nov 30 2020, 6:47 PM

Julien DUROURE (julien) committed rBA5f2cb885abb9: glTF exporter: fix export when texture is used only for alpha (authored by Julien DUROURE (julien)).

glTF exporter: fix export when texture is used only for alpha

Nov 30 2020, 6:46 PM

Nov 25 2020

Julien DUROURE (julien) added a comment to T82084: Blender sets glTF backculling setting based on Eevee material.

Hello,
Note that I created a ticket in upstream repository : https://github.com/KhronosGroup/glTF-Blender-IO/issues/1254

Nov 25 2020, 5:22 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) closed T82968: gltf/glb imported with skinning/rigging artifacts as Archived.

Nov 25 2020, 2:48 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) added a comment to T82968: gltf/glb imported with skinning/rigging artifacts.

Here is how to solve your issue : Uncheck the "Guess the original bind pose".

Nov 25 2020, 2:48 PM · Add-ons (BF-Blender)

Nov 23 2020

Julien DUROURE (julien) committed rBA896ced2595dc: Merge branch 'blender-v2.91-release' (authored by Julien DUROURE (julien)).

Merge branch 'blender-v2.91-release'

Nov 23 2020, 8:45 PM

Julien DUROURE (julien) committed rBAca7419744012: glTF: Bump version after recent changes (authored by Julien DUROURE (julien)).

glTF: Bump version after recent changes

Nov 23 2020, 8:43 PM

Julien DUROURE (julien) accepted D9613: FBX and glTF importer: Handle limit for vertex color and uv layers.

Nov 23 2020, 12:36 PM

Julien DUROURE (julien) added a comment to D9613: FBX and glTF importer: Handle limit for vertex color and uv layers.

Seems to be OK for me too on glTF part

Nov 23 2020, 11:35 AM

Nov 14 2020

Julien DUROURE (julien) closed T81095: GLTF export crashes after decimation is applied to the model second time as Resolved.

Confirmed that the original bug is now fixed by 60c3ef3d6183
Closing this ticket.
Thanks!

Nov 14 2020, 5:01 PM · Import/Export, Add-ons (BF-Blender)

Nov 5 2020

Julien DUROURE (julien) added a comment to T81095: GLTF export crashes after decimation is applied to the model second time.

The original bug is now fixed.
This one should be fixed too (you have to wait until next build is done tomorrow)

Nov 5 2020, 7:27 AM · Import/Export, Add-ons (BF-Blender)

Nov 2 2020

Julien DUROURE (julien) added a comment to T79104: Exporting a valid GLTF (was valid before import) causes GLTF validation errors.

@Jonathan Clark (jclarkk) This fix is not on 2.90, please test with 2.91 beta

Nov 2 2020, 10:20 AM · Import/Export, Add-ons (BF-Blender)

Oct 28 2020

Julien DUROURE (julien) committed rBA9a824ed39eda: Merge branch 'blender-v2.91-release' (authored by Julien DUROURE (julien)).

Merge branch 'blender-v2.91-release'

Oct 28 2020, 6:31 PM

Julien DUROURE (julien) committed rBAa927d3e1bca8: glTF importer: Fix T82189 avoid traceback on non valid file with empty… (authored by Julien DUROURE (julien)).

glTF importer: Fix T82189 avoid traceback on non valid file with empty…

Oct 28 2020, 6:30 PM

Julien DUROURE (julien) closed T82189: Import of glTF/glb files that contain an object without mesh data results in an error as Resolved by committing rBAa927d3e1bca8: glTF importer: Fix T82189 avoid traceback on non valid file with empty….

Oct 28 2020, 6:30 PM · Import/Export, Add-ons (BF-Blender)

Julien DUROURE (julien) added a comment to T82189: Import of glTF/glb files that contain an object without mesh data results in an error.

@Philipp Oeser (lichtwerk) Ok, I will manage it upstream

Oct 28 2020, 6:11 PM · Import/Export, Add-ons (BF-Blender)

Oct 26 2020

Julien DUROURE (julien) claimed T82084: Blender sets glTF backculling setting based on Eevee material.

Oct 26 2020, 3:52 PM · Add-ons (BF-Blender)

Oct 21 2020

Julien DUROURE (julien) committed rBAb44548176213: glTF: Bump master to 1.5.0 after blender-v2.91-release branch creation (authored by Julien DUROURE (julien)).

glTF: Bump master to 1.5.0 after blender-v2.91-release branch creation

Oct 21 2020, 6:47 PM

Julien DUROURE (julien) closed T75034: glTF doesn't export the auto shade smooth property option as Resolved.

This had been solved some time ago, I missed to close this ticket

Oct 21 2020, 4:36 PM · Import/Export

Julien DUROURE (julien) reopened T78459: glTF Exporter won't properly export linked collections if 'Selected objects' option is toggled as "Needs Triage".

Oct 21 2020, 4:34 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) closed T78459: glTF Exporter won't properly export linked collections if 'Selected objects' option is toggled as Resolved.

Sorry, closed the wrong ticket.
This is still not solved yet

Oct 21 2020, 4:33 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) closed T80460: gltf / glb-export: 2nd level hierarchy selections can't be exported as Resolved.

This is now fixed after commit rBA33eae7da675d532bbb9c12b129c0e30228f5f000

Oct 21 2020, 4:28 PM · Add-ons (Community)

Julien DUROURE (julien) closed T81792: glTF 2.0 import loses mesh custom properties as Resolved.

This is now fixed after commit rBA9e7404ce614d0a4b2e66bbb449f3b17025a27fb8

Oct 21 2020, 4:24 PM · Add-ons (Community)

Oct 20 2020

Julien DUROURE (julien) committed rBA33eae7da675d: glTF exporter: filtering of exported nodes (authored by Julien DUROURE (julien)).

glTF exporter: filtering of exported nodes

Oct 20 2020, 10:38 PM

Julien DUROURE (julien) committed rBAf713ed806347: glTF importer: better error messages when loading files (authored by Julien DUROURE (julien)).

glTF importer: better error messages when loading files

Oct 20 2020, 10:36 PM

Julien DUROURE (julien) committed rBA9e7404ce614d: glTF importer: restore setting extra to mesh custom properties (authored by Julien DUROURE (julien)).

glTF importer: restore setting extra to mesh custom properties

Oct 20 2020, 10:34 PM

Oct 16 2020

Daniel Salazar (zanqdo) awarded rBA654169969408: glTF exporter: option to export placeholder of materials a Love token.

Oct 16 2020, 9:35 AM

Oct 15 2020

Julien DUROURE (julien) updated subscribers of T81746: glTF export doesn't export tangents for non-triangulated meshes.

I don't have more information on how it works internally. Result is that it's not available via bpy
Maybe @Campbell Barton (campbellbarton) can have more information on that.

Oct 15 2020, 9:34 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) added a comment to T81746: glTF export doesn't export tangents for non-triangulated meshes.

Meshes are not triangulated during export. There are extracted using data.loop_triangles (after using data.calc_loop_triangles() )
Tangents are not known neither after these steps

Oct 15 2020, 9:11 PM · Add-ons (BF-Blender)

Oct 8 2020

Julien DUROURE (julien) committed rBA77aada8057d9: glTF importer/exporter: fix for material_index/material slots (authored by Julien DUROURE (julien)).

glTF importer/exporter: fix for material_index/material slots

Oct 8 2020, 8:25 PM

Julien DUROURE (julien) committed rBA6cef5e013e54: glTF importer: use bpy.utils.escape_identifier to escape names for action paths (authored by Julien DUROURE (julien)).

glTF importer: use bpy.utils.escape_identifier to escape names for action paths

Oct 8 2020, 7:20 PM

Julien DUROURE (julien) committed rBAd3100f5f71ce: glTF exporter: Don't mess with normals when doing Apply Modifiers (authored by Julien DUROURE (julien)).

glTF exporter: Don't mess with normals when doing Apply Modifiers

Oct 8 2020, 7:18 PM

Sep 24 2020

Julien DUROURE (julien) added a comment to T81095: GLTF export crashes after decimation is applied to the model second time.

This is related to this bug in Blender: T81136

Sep 24 2020, 5:11 PM · Import/Export, Add-ons (BF-Blender)

Julien DUROURE (julien) created T81136: calc_loop_triangles is not updated after applying modifiers.

Sep 24 2020, 5:10 PM · Modeling, Python API, BF Blender

Sep 23 2020

Julien DUROURE (julien) added inline comments to rBAf3cf3a16e989: glTF exporter: Manage emission strength in materials.

Sep 23 2020, 9:39 AM

Julien DUROURE (julien) added a comment to D4971: added emission strength to the principled BSDF node..

Hello. Importer & exporter glTF is now using the new socket ( see feca8c528979 and f3cf3a16e989 )

Sep 23 2020, 8:06 AM · EEVEE & Viewport, Nodes, Rendering, Cycles

Julien DUROURE (julien) committed rBAfeca8c528979: glTF importer: import grayscale emissiveFactor as Emission Strength (new… (authored by Julien DUROURE (julien)).

glTF importer: import grayscale emissiveFactor as Emission Strength (new…

Sep 23 2020, 8:03 AM

Sep 18 2020

Julien DUROURE (julien) committed rBA1f043682f956: glTF exporter: support KHR_materials_unlit (authored by Julien DUROURE (julien)).

glTF exporter: support KHR_materials_unlit

Sep 18 2020, 6:57 PM

Julien DUROURE (julien) closed T80921: wrong .glb format reading as Archived.

I don't think this is a bug.

Sep 18 2020, 4:41 PM · BF Blender

Sep 17 2020

Julien DUROURE (julien) changed the status of T78926: Materials export blank if unconnected Principled BSDF node is anywhere in a "Background" material during gltf 2.0 export from Needs Triage to Confirmed.

Thanks for this report.
I just committed a first work around about it on d7d2bad09f8c04d3e86081481fc700ae3c834800
Now you can mute your principled shader, it will be ignore.

Sep 17 2020, 9:55 PM · Add-ons (BF-Blender)

Julien DUROURE (julien) closed T80231: small auto-export to (GLB)gltf as Archived.

Thanks for this addon.
Blender don't have any other auto-export features, we don't plan to add it.

Sep 17 2020, 9:52 PM · Add-ons (Community)

Julien DUROURE (julien) committed rBA654169969408: glTF exporter: option to export placeholder of materials (authored by Julien DUROURE (julien)).

glTF exporter: option to export placeholder of materials

Sep 17 2020, 9:48 PM

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