Exporting FBX loos vertex normal out from original imported FBX file as an example. #66537

New Issue

Alan Mattano · 2019-07-07T21:35:59+02:00

Alan Mattano commented

2019-07-07 21:35:59 +02:00

System Information
Operating system:
Graphics card: GTX 1080Ti

Blender Version
Version 2.80 Beta e7356bb01198, 2019-07-02 13:31

Short description of error
Exporting FBX loos vertex normal out from original imported FBX file as an example.

Exact steps for others to reproduce the error
FBX lost custom vertex normals
Bug fixing is important. Since Maniphest blender/blender#57673 closed and archived, I try letting you know how important is for us to export to Substance Painter, Unity, Unreal (FBX) to paint ower models:

Enclose you will find .blend file, original FBX with correct normals, the Blender output FBX.
Here there is a related question to a forum that includes screenshots:
https://blenderartists.org/t/how-to-export-in-fbx-correctly-without-losing-mesh-vertex-normals/1167929

Import original FBX into Blender
Select the object MESH to export
Export FBX using the default setting
Open it in Painter, Unity, Rhino, Unreal or your other 3D soft tool
Apply material with reflection to inspect the problem
You will notice that vertex normals are not the same as in Blender and make the Blender object unusable.

NOTE: Please contact Rhinoceros or Unity so that they can help you with the FBX exporter.

Forza 04 Bug.blend

Forza 11 out from Blender.fbx

Forza 06 - Original good normals.fbx

**System Information** Operating system: Graphics card: GTX 1080Ti **Blender Version** Version 2.80 Beta e7356bb01198, 2019-07-02 13:31 **Short description of error** Exporting FBX loos vertex normal out from original imported FBX file as an example. **Exact steps for others to reproduce the error** FBX lost custom vertex normals Bug fixing is important. Since Maniphest blender/blender#57673 closed and archived, I try letting you know how important is for us to export to Substance Painter, Unity, Unreal (FBX) to paint ower models: Enclose you will find .blend file, original FBX with correct normals, the Blender output FBX. Here there is a related question to a forum that includes screenshots: https://blenderartists.org/t/how-to-export-in-fbx-correctly-without-losing-mesh-vertex-normals/1167929 - Import original FBX into Blender - Select the object MESH to export - Export FBX using the default setting - Open it in Painter, Unity, Rhino, Unreal or your other 3D soft tool - Apply material with reflection to inspect the problem - You will notice that vertex normals are not the same as in Blender and make the Blender object unusable. NOTE: Please contact Rhinoceros or Unity so that they can help you with the FBX exporter. [Forza 04 Bug.blend](https://archive.blender.org/developer/F7573611/Forza_04_Bug.blend) [Forza 11 out from Blender.fbx](https://archive.blender.org/developer/F7573625/Forza_11_out_from_Blender.fbx) [Forza 06 - Original good normals.fbx](https://archive.blender.org/developer/F7573627/Forza_06_-_Original_good_normals.fbx)

Alan Mattano commented

2019-07-07 21:35:59 +02:00

Added subscriber: @AlanMattano

Bastien Montagne commented

2019-07-08 11:09:55 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2019-07-08 11:09:55 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2019-07-08 11:09:55 +02:00

Bastien Montagne self-assigned this 2019-07-08 11:09:55 +02:00

Bastien Montagne commented

2019-07-08 11:09:55 +02:00

You are not exporting with default settings, you are exporting with Smoothing set to Edge, to keep proper normals you need to export with Normals Only instead (wich is the default value…).

We do not handle user support on this tracker, only bug reports. User forums like blenderartists.org or blender.stackexchange.com and our devtalk should be used for that matter.

You are not exporting with default settings, you are exporting with `Smoothing` set to `Edge`, to keep proper normals you need to export with `Normals Only` instead (wich is the default value…). We do not handle user support on this tracker, only bug reports. User forums like [blenderartists.org](http:*blenderartists.org/) or [blender.stackexchange.com](http:*blender.stackexchange.com/) and our [devtalk](https://devtalk.blender.org) should be used for that matter.

Alan Mattano commented

2019-07-08 15:41:13 +02:00

I Keep proper normals you need to export with Normals Only and loos vertex normal.
Verify !

As a workaround do not use FBX use OBJ until this is fixed.

I Keep proper normals you need to export with Normals Only and loos vertex normal. Verify ! ![image.png](https://archive.blender.org/developer/F7579131/image.png) As a workaround do not use FBX use OBJ until this is fixed.

Alan Mattano commented

2019-07-08 15:42:50 +02:00

Thanks, developer read this thread.
I'm not the only one having this problem. And this issue has been reported before.

Is the second time that they close this without verification with a general answer. I suspect they presume I exported changing settings (I hope that they do not do it on purpose).

Please double check using the files.
The file provided is there so that developers can look to the difference between the two FBX.

Thanks, developer read this thread. I'm not the only one having this problem. And this issue has been reported before. Is the second time that they close this without verification with a general answer. I suspect they presume I exported changing settings (I hope that they do not do it on purpose). Please double check using the files. The file provided is there so that developers can look to the difference between the two FBX.

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Exporting FBX loos vertex normal out from original imported FBX file as an example. #66537