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Fix T64999: FBX export fails with empty material slot. 

We cannot reliably use `mesh.materials`, since those might be empty when
materials are only assigned/linked to the object...
This commit is contained in:
Bastien Montagne 2019-05-23 09:34:45 +02:00
parent 067ccc71c2
commit 57684e2bbf
Notes: blender-bot 2023-02-14 02:29:02 +01:00 
Referenced by issue blender/blender#64999, FBX export fails with empty material slot
2 changed files with 3 additions and 4 deletions
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2
io_scene_fbx/__init__.py
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@ -21,7 +21,7 @@
bl_info = {
"name": "FBX format",
"author": "Campbell Barton, Bastien Montagne, Jens Restemeier",
"version": (4, 14, 8),
"version": (4, 14, 9),
"blender": (2, 80, 0),
"location": "File > Import-Export",
"description": "FBX IO meshes, UV's, vertex colors, materials, textures, cameras, lamps and actions",

5
io_scene_fbx/export_fbx_bin.py
View File

@ -1130,9 +1130,8 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
# Face's materials.
me_fbxmaterials_idx = scene_data.mesh_material_indices.get(me)
if me_fbxmaterials_idx is not None:
# Mapping to indices is done using original material pointers, so need to go from evaluated
# to original (this is for the case mesh is a result of evaluated modifier stack).
me_blmaterials = [material.original for material in me.materials]
# We cannot use me.materials here, as this array is filled with None in case materials are linked to object...
me_blmaterials = [mat_slot.material for mat_slot in me_obj.material_slots]
if me_fbxmaterials_idx and me_blmaterials:
lay_ma = elem_data_single_int32(geom, b"LayerElementMaterial", 0)
elem_data_single_int32(lay_ma, b"Version", FBX_GEOMETRY_MATERIAL_VERSION)