Importing Custom Normals with FBX fails #43582

New Issue

Przemyslaw Golab (SirPigeonz) · 2015-02-06T14:59:05+01:00

2015-02-06 14:59:05 +01:00

Build Bot: Blender 2.73.6 2015-02-05 21:14 Hash: ced4c5f
GA.org build: Blender 2.72.1 2014-10-08 18:15 Hash: 6b2952c Branch testbuild

Exports from BB and GA versions using Smoothing set to "Edge" in exporter options opens correctly in Mudbox and probably Max too.

Importing FBXs.

In BB build:

doesn't import correctly FBX saved from blender BB or GA, all faces are flat
importing FBX made probably in Max (maybe Maya not sure sorry) crashes import and displays this traceback:

Traceback (most recent call last):
  File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\__init__.py", line 200, in execute
    return import_fbx.load(self, context, **keywords)
  File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\import_fbx.py", line 2242, in load
    _(); del _
  File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\import_fbx.py", line 2236, in _
    fbx_item[1] = blen_read_texture_image(fbx_tmpl_img, fbx_obj, basedir, settings)
  File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\import_fbx.py", line 1281, in blen_read_texture_image
    filepath = filepath.replace('\\', '/') if (os.sep == '/') else filepath.replace('/', '\\')
AttributeError: 'NoneType' object has no attribute 'replace'

location: <unknown location>:-1

In GA build:

doesn't import correctly FBX saved from blender BB or GA, all faces are flat same as BB build
importing Max FBX works correctly

Build Bot: Blender 2.73.6 2015-02-05 21:14 Hash: ced4c5f GA.org build: Blender 2.72.1 2014-10-08 18:15 Hash: 6b2952c Branch testbuild **Exports from BB and GA versions** using Smoothing set to "Edge" in exporter options opens correctly in Mudbox and probably Max too. **Importing FBXs.** **In BB build:** - doesn't import correctly FBX saved from blender BB or GA, all faces are flat - importing FBX made probably in Max (maybe Maya not sure sorry) crashes import and displays this traceback: ``` Traceback (most recent call last): File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\__init__.py", line 200, in execute return import_fbx.load(self, context, **keywords) File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\import_fbx.py", line 2242, in load _(); del _ File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\import_fbx.py", line 2236, in _ fbx_item[1] = blen_read_texture_image(fbx_tmpl_img, fbx_obj, basedir, settings) File "C:\Users\pgolab\Desktop\blender-2.73-ced4c5f-win64\2.73\scripts\addons\io_scene_fbx\import_fbx.py", line 1281, in blen_read_texture_image filepath = filepath.replace('\\', '/') if (os.sep == '/') else filepath.replace('/', '\\') AttributeError: 'NoneType' object has no attribute 'replace' location: <unknown location>:-1 ``` **In GA build:** - doesn't import correctly FBX saved from blender BB or GA, all faces are flat same as BB build - importing Max FBX works correctly

Przemyslaw Golab (SirPigeonz) commented

2015-02-06 14:59:05 +01:00

Changed status to: 'Open'

Bastien Montagne was assigned by Przemyslaw Golab (SirPigeonz)

2015-02-06 14:59:05 +01:00

Przemyslaw Golab (SirPigeonz) commented

2015-02-06 14:59:05 +01:00

Added subscriber: @SirPigeonz

Bastien Montagne commented

2015-02-06 15:03:12 +01:00

Please always attach need files to reproduce the issue (in this case, FBX from max, and .blend + FBX from blender)…

Przemyslaw Golab (SirPigeonz) commented

2015-02-06 15:44:44 +01:00

FBX from BB build: lamp.fbx
FBX from GA build: lamp_ga.fbx

Mudbox FBX: mudbox_fbx_example.fbx

I can't create or share Max FBX that worked but I made Mudbox FBX (they should be compatible) but which also has issues but a bit different.
In BB build the same as above.
In GA buld mesh imports but it resets custom normals and displays this traceback:

Traceback (most recent call last):
  File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\__init__.py", line 213, in execute
    return import_fbx.load(self, context, **keywords)
  File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\import_fbx.py", line 2709, in load
    _(); del _
  File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\import_fbx.py", line 2637, in _
    tex_map = texture_mapping_get(fbx_lnk)
  File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\import_fbx.py", line 2526, in texture_mapping_get
    assert(fbx_props[0] is not None)
AssertionError

location: <unknown location>:-1

.blend file: lamp.blend

FBX from BB build: [lamp.fbx](https://archive.blender.org/developer/F141647/lamp.fbx) FBX from GA build: [lamp_ga.fbx](https://archive.blender.org/developer/F141648/lamp_ga.fbx) Mudbox FBX: [mudbox_fbx_example.fbx](https://archive.blender.org/developer/F141651/mudbox_fbx_example.fbx) I can't create or share Max FBX that worked but I made Mudbox FBX (they should be compatible) but which also has issues but a bit different. In BB build the same as above. In GA buld mesh imports but it resets custom normals and displays this traceback: ``` Traceback (most recent call last): File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\__init__.py", line 213, in execute return import_fbx.load(self, context, **keywords) File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\import_fbx.py", line 2709, in load _(); del _ File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\import_fbx.py", line 2637, in _ tex_map = texture_mapping_get(fbx_lnk) File "C:\Users\pgolab\Desktop\testbuild-blender-2.72-6b2952c-win64\2.72\scripts\addons\io_scene_fbx\import_fbx.py", line 2526, in texture_mapping_get assert(fbx_props[0] is not None) AssertionError location: <unknown location>:-1 ``` .blend file: [lamp.blend](https://archive.blender.org/developer/F141655/lamp.blend)

Bastien Montagne commented

2015-02-06 16:39:13 +01:00

Fixed issue with mudbox FBX file.

I tried your two lamp.fbx files, none of them have normals, so it cannot import correctly (as in, like org .blend file) in Blender nor any other application.

I tried to export and re-import lamp.blend with current master, and it works as expected. So think you are using incorrect export settings, most likely you have set Smoothing to 'Face' or 'Edge', please let it to 'Off' if you want normals.

Fixed issue with mudbox FBX file. I tried your two lamp.fbx files, none of them have normals, so it cannot import correctly (as in, like org .blend file) in Blender nor any other application. I tried to export and re-import lamp.blend with current master, and it works as expected. So think you are using incorrect export settings, most likely you have set Smoothing to 'Face' or 'Edge', please let it to 'Off' if you want normals.

Przemyslaw Golab (SirPigeonz) commented

2015-02-07 11:51:27 +01:00

Hmm, yes I used Edge Smoothing if I used Off or Face when I exported files and opened them in Mudbox there was no sharp edges in Mudbox.

I'm not sure how the workflow with custom normals nor FBX options should work then. Is there documentation on them? I didn't found any. I was testing it blindly I must admit. Testing what works and what not, exporting with Edge Smoothing was closest I get.
This would help me testing it further. (but at Monday I don't have access to Autodesk tools at home).

I'm mostly interested how to export Blender model to FBX with sharp edges/loops that I or somebody on the team can open in Mudbox, Max or Maya and that imports the same to Blender. Is it possible?

Well I can use Edge Split modifier but that is destructive workflow that leaves separated vertices so I can't use it on project.

Hmm, yes I used Edge Smoothing if I used Off or Face when I exported files and opened them in Mudbox there was no sharp edges in Mudbox. I'm not sure how the workflow with custom normals nor FBX options should work then. Is there documentation on them? I didn't found any. I was testing it blindly I must admit. Testing what works and what not, exporting with Edge Smoothing was closest I get. This would help me testing it further. (but at Monday I don't have access to Autodesk tools at home). I'm mostly interested how to export Blender model to FBX with sharp edges/loops that I or somebody on the team can open in Mudbox, Max or Maya and that imports the same to Blender. Is it possible? Well I can use Edge Split modifier but that is destructive workflow that leaves separated vertices so I can't use it on project.

Bastien Montagne commented

2015-02-07 19:51:46 +01:00

There was a bug due to recent custom normals merge, that resulted in always exporting only vertex normals (i.e. smooth shading). I fixed it yesterday evening, so you hould be able to confirm with latest builds from buildbot that everything is back to normal?

Przemyslaw Golab (SirPigeonz) commented

2015-02-09 10:32:05 +01:00

Sorry for late reply. I've tested new builds and:

exported FBX with Smoothing OFF imports correctly to Blender but Mudbox imports it as globaly smoothed, ignoring splited edges
exported FBX with Smoothing Edge imports as flat faces in Blender but imports correctly to Mudbox

Sorry for late reply. I've tested new builds and: - exported FBX with Smoothing OFF imports correctly to Blender but Mudbox imports it as globaly smoothed, ignoring splited edges - exported FBX with Smoothing Edge imports as flat faces in Blender but imports correctly to Mudbox

blender-admin commented

2015-02-09 20:54:57 +01:00

This issue was referenced by blender/blender-addons@95633e7f1b

This issue was referenced by blender/blender-addons@95633e7f1b1bb40f058cbb6d7ed0d7afd1512a24

Bastien Montagne commented

2015-02-09 21:04:43 +01:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2015-02-09 21:04:43 +01:00

Bastien Montagne commented

2015-02-09 21:04:43 +01:00

Closed by commit blender/blender-addons@95633e7f1b.