Broken: FBX Exporter will not export textures/shader tree with 2.8X #71429

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Michael Klein · 2019-11-08T15:36:52+01:00

Michael Klein commented

2019-11-08 15:36:52 +01:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.12

Blender Version
Broken: version: 2.82 (sub 1), branch: master, commit date: 2019-11-07 20:36, hash: blender/blender@23e1fb365b
Worked: 2.79 e045fe53f1b0

Addon Information
Name: FBX format (4, 20, 2)
Author: Campbell Barton, Bastien Montagne, Jens Restemeier

Short description of error
Exporting FBX from Blender and importing into Maya 2019.2 works as intended with 2.79 latest build. It will give you a shader tree with connected textures and values like a diffuse color. In 2.8X it seems to be broken. Maya imports the geometry with a neutral while shader node. No textures.

Exact steps for others to reproduce the error
I will attach a screen recording later. Steps are:

Load scene
Select object with textures to export
Export FBX with selected only
Import to Maya 2019.2

Result:
2.79 export shows a correct shader tree reference
2.81 / 2.82 latest builds of today gives just a neutral white shader without textures.

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.12 **Blender Version** Broken: version: 2.82 (sub 1), branch: master, commit date: 2019-11-07 20:36, hash: `blender/blender@23e1fb365b` Worked: 2.79 e045fe53f1b0 **Addon Information** Name: FBX format (4, 20, 2) Author: Campbell Barton, Bastien Montagne, Jens Restemeier **Short description of error** Exporting FBX from Blender and importing into Maya 2019.2 works as intended with 2.79 latest build. It will give you a shader tree with connected textures and values like a diffuse color. In 2.8X it seems to be broken. Maya imports the geometry with a neutral while shader node. No textures. **Exact steps for others to reproduce the error** I will attach a screen recording later. Steps are: - Load scene - Select object with textures to export - Export FBX with selected only - Import to Maya 2019.2 Result: 2.79 export shows a correct shader tree reference 2.81 / 2.82 latest builds of today gives just a neutral white shader without textures.

Michael Klein commented

2019-11-08 15:36:52 +01:00

Added subscriber: @Renderbicks

Michael Klein commented

2019-11-08 16:23:50 +01:00

I have found more info. So it's not a bug. Just a missing feature.

Missing
Some of the following features are missing because they are not supported by the FBX format, others may be added later.

Object instancing – exported objects do not share data, instanced objects will each be written with their own data.
Material textures
Vertex shape keys – FBX supports them but this exporter does not write them yet.
Animated fluid simulation – FBX does not support this kind of animation. You can however use the OBJ exporter to write a sequence of files.
Constraints – The result of using constraints is exported as a keyframe animation however the constraints themselves are not saved in the FBX.
Instanced objects – At the moment instanced objects are only written in static scenes (when animation is disabled).

I have found more info. So it's not a bug. Just a missing feature. **Missing** Some of the following features are missing because they are not supported by the FBX format, others may be added later. Object instancing – exported objects do not share data, instanced objects will each be written with their own data. **Material textures** Vertex shape keys – FBX supports them but this exporter does not write them yet. Animated fluid simulation – FBX does not support this kind of animation. You can however use the OBJ exporter to write a sequence of files. Constraints – The result of using constraints is exported as a keyframe animation however the constraints themselves are not saved in the FBX. Instanced objects – At the moment instanced objects are only written in static scenes (when animation is disabled).

Germano Cavalcante commented

2019-11-08 16:47:57 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2019-11-08 16:47:57 +01:00

Could you provide a simple file and provide steps that do not involve the use of external software?
That would save developers time.

Could you provide a simple file and provide steps that do not involve the use of external software? That would save developers time.

Michael Klein commented

2019-11-12 23:38:42 +01:00

Here's a simple 2.79 scene. If you export the scene to FBX with the latest 2.79 I will get a shader tree with textures in Maya 2019.2. If I use the exporter in the latest 2.81 the import to Maya will ignore textures.

But what's interesting: This comes not from the Principled shader tree. There must be something else in this scene with two textures connected. This is what I realized. The scene comes from Evermotion and was converted into Blender from a 3DMAX scene using Vray.

But anyway. Fact is that the 2.79 FBX will give me a tree with two textures in Maya and the correct green diffuse color while the 2.81 will give me just a neutral shader without the original green diffuse color. Just a standard white diffuse.

Chair_for_FBX_v01.zip

Here's a simple 2.79 scene. If you export the scene to FBX with the latest 2.79 I will get a shader tree with textures in Maya 2019.2. If I use the exporter in the latest 2.81 the import to Maya will ignore textures. But what's interesting: This comes not from the Principled shader tree. There must be something else in this scene with two textures connected. This is what I realized. The scene comes from Evermotion and was converted into Blender from a 3DMAX scene using Vray. But anyway. Fact is that the 2.79 FBX will give me a tree with two textures in Maya and the correct green diffuse color while the 2.81 will give me just a neutral shader without the original green diffuse color. Just a standard white diffuse. [Chair_for_FBX_v01.zip](https://archive.blender.org/developer/F8053006/Chair_for_FBX_v01.zip)

Dalai Felinto commented

2019-11-26 23:01:26 +01:00

Added subscriber: @dfelinto

Dalai Felinto commented

2019-11-26 23:01:26 +01:00

Thanks for the report. From what you say, the sample file could still be simplified further. Could you find a way to nail it down to a face with one material, simplified ui, …? That increases the chance of a developer being able to work on this considerably.

Aaron Carlisle commented

2020-02-14 22:31:23 +01:00

Added subscriber: @Blendify

Aaron Carlisle commented

2020-02-14 22:31:23 +01:00

Changed status from 'Needs User Info' to: 'Resolved'

Aaron Carlisle closed this issue

2020-02-14 22:31:23 +01:00

Aaron Carlisle self-assigned this 2020-02-14 22:31:23 +01:00

Aaron Carlisle commented

2020-02-14 22:31:23 +01:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

Michael Klein commented

2020-02-17 19:57:43 +01:00

I will test it again.

Michael Klein commented

2020-02-17 20:16:11 +01:00

The exporter will ignore nodes plugged into the Principled shader. There's a green RGB node connected to the Base Color. Removing it and changing the color will give me the result in Maya. All othe texture nodes will be ignored.

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