I’ve just upgraded my project to 2019.1.0f1 from 2019.1.0b9, and all the previously functional Blender files fail to import correctly (I’ve been exporting to FBX manually lately, but have a couple of vestigial .blends in there).
My Blender installation is 2.79. On starting Unity, the warning is as follows:
Blender could not convert the .blend file to FBX file.
You need to use Blender 2.45-2.49 or 2.58 and later versions for direct Blender import to work.
Please submit a bug-report as described in this document:
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Thanks for bringing this to our attention. We are aware of the issue and the team is looking into it.
Is there any easy workaround for an existing project?
There’s 2 workarounds. One is to export from Blender in FBX, the other is to use the file Data\Tools\Unity-BlenderToFBX.py from the previous version of Unity.
Thank you very much for the workaround.
What has changed that has caused this to happen?
Also is there any way to trick Unity Into using blender 2.8 for the FBX export?
Game dev with EEVEE is just amazing!
Theres 2 listed work arounds here https://forum.unity.com/threads/upgrading-to-2019-1-0f2-troubles-blend-import-broken-workaround.662623/#post-4439128 by user jotapeh_
One is to upgrade to a blender 2.8 beta.
The other is to find the Unity-BlenderToFBX.py file from your 2018 version and replace your 2019 Unity-BlenderToFBX.py with the 2018 version.
I compared the two files and there were some changes made to the 2019 version, but I don’t know where exactly the bug is coming from.
The solution has worked for a windows user, and a mac user (myself).
2018.3.9f1 Unity-BlenderToFBX.py
So you can copy-paste it now right from here (do the backup!)
blender249 = True
try: import Blender
except:
blender249 = False
import bpy
if blender249:
try: import export_fbx
except:
print('error: export_fbx not found.')
Blender.Quit()
else:
try: import io_scene_fbx.export_fbx
except:
print('error: io_scene_fbx.export_fbx not found.')
# This might need to be bpy.Quit()
raise
# Find the Blender output file
import os
outfile = os.getenv("UNITY_BLENDER_EXPORTER_OUTPUT_FILE")
# Do the conversion
print("Starting blender to FBX conversion " + outfile)
if blender249:
mtx4_x90n = Blender.Mathutils.RotationMatrix(-90, 4, 'x')
export_fbx.write(outfile,
EXP_OBS_SELECTED=False,
EXP_MESH=True,
EXP_MESH_APPLY_MOD=True,
EXP_MESH_HQ_NORMALS=True,
EXP_ARMATURE=True,
EXP_LAMP=True,
EXP_CAMERA=True,
EXP_EMPTY=True,
EXP_IMAGE_COPY=False,
ANIM_ENABLE=True,
ANIM_OPTIMIZE=False,
ANIM_ACTION_ALL=True,
GLOBAL_MATRIX=mtx4_x90n)
else:
# blender 2.58 or newer
import math
from mathutils import Matrix
# -90 degrees
mtx4_x90n = Matrix.Rotation(-math.pi / 2.0, 4, 'X')
print("moo")
class FakeOp:
def report(self, tp, msg):
print("%s: %s" % (tp, msg))
exportObjects = ['ARMATURE', 'EMPTY', 'MESH']
minorVersion = bpy.app.version[1];
if minorVersion <= 58:
# 2.58
io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile,
global_matrix=mtx4_x90n,
use_selection=False,
object_types=exportObjects,
mesh_apply_modifiers=True,
ANIM_ENABLE=True,
ANIM_OPTIMIZE=False,
ANIM_OPTIMIZE_PRECISSION=6,
ANIM_ACTION_ALL=True,
batch_mode='OFF',
BATCH_OWN_DIR=False)
else:
# 2.59 and later
kwargs = io_scene_fbx.export_fbx.defaults_unity3d()
io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile, **kwargs)
# HQ normals are not supported in the current exporter
print("Finished blender to FBX conversion " + outfile)
No idea why, but your code didn’t work for me, I installed 2018.3 again and this one worked:
import bpy
blender249 = True
blender280 = (2,80,0) <= bpy.app.version
try:
import Blender
except:
blender249 = False
if not blender280:
if blender249:
try:
import export_fbx
except:
print('error: export_fbx not found.')
Blender.Quit()
else :
try:
import io_scene_fbx.export_fbx
except:
print('error: io_scene_fbx.export_fbx not found.')
# This might need to be bpy.Quit()
raise
# Find the Blender output file
import os
outfile = os.getenv("UNITY_BLENDER_EXPORTER_OUTPUT_FILE")
# Do the conversion
print("Starting blender to FBX conversion " + outfile)
if blender280:
import bpy.ops
bpy.ops.export_scene.fbx(filepath=outfile,
check_existing=False,
use_selection=False,
use_active_collection=False,
object_types= {'ARMATURE','CAMERA','LIGHT','MESH','EMPTY'},
use_mesh_modifiers=True,
mesh_smooth_type='OFF',
use_custom_props=True,
apply_scale_options='FBX_SCALE_ALL')
elif blender249:
mtx4_x90n = Blender.Mathutils.RotationMatrix(-90, 4, 'x')
export_fbx.write(outfile,
EXP_OBS_SELECTED=False,
EXP_MESH=True,
EXP_MESH_APPLY_MOD=True,
EXP_MESH_HQ_NORMALS=True,
EXP_ARMATURE=True,
EXP_LAMP=True,
EXP_CAMERA=True,
EXP_EMPTY=True,
EXP_IMAGE_COPY=False,
ANIM_ENABLE=True,
ANIM_OPTIMIZE=False,
ANIM_ACTION_ALL=True,
GLOBAL_MATRIX=mtx4_x90n)
else:
# blender 2.58 or newer
import math
from mathutils import Matrix
# -90 degrees
mtx4_x90n = Matrix.Rotation(-math.pi / 2.0, 4, 'X')
class FakeOp:
def report(self, tp, msg):
print("%s: %s" % (tp, msg))
exportObjects = ['ARMATURE', 'EMPTY', 'MESH']
minorVersion = bpy.app.version[1];
if minorVersion <= 58:
# 2.58
io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile,
global_matrix=mtx4_x90n,
use_selection=False,
object_types=exportObjects,
mesh_apply_modifiers=True,
ANIM_ENABLE=True,
ANIM_OPTIMIZE=False,
ANIM_OPTIMIZE_PRECISSION=6,
ANIM_ACTION_ALL=True,
batch_mode='OFF',
BATCH_OWN_DIR=False)
else:
# 2.59 and later
kwargs = io_scene_fbx.export_fbx.defaults_unity3d()
io_scene_fbx.export_fbx.save(FakeOp(), bpy.context, filepath=outfile, **kwargs)
# HQ normals are not supported in the current exporter
print("Finished blender to FBX conversion " + outfile)