From Blender to Unity...always a lot of issues

Good afternoon,

I have been using Unity for some time with satisfaction .... unfortunately I need to make the 3d models by myself
.
I am a bit familiar with Blender and I made some simple models: we are talking about cubes and spheres with something attached.

So far everything ok until I started playing with animations, armatures & bones.

now: you will wonder why I am here and not in a blender group asking questions.

Simple: the problem arises when exporting from blender or maya and importing into unity.

But is it possible that it is so complicated to import a mesh without having all these issues?

I wonder how the professionals work on it.

I also experienced Maya but poetry dropped when I realized that the problems are the same.

Forgive the outburst but I don't know who / where to turn anymore: I've seen a lot of tutorials but I never find the right way.


Below I post the videos of the problem.
Have any of you experienced these issues? Do you have a valid solution?

In attachment you can find my blender file.

thank you

 

Good day to you


The frustration is well positioned. I remember undergoing several problems whenever exporting from Blender to Unity. I see no video detailing your issue? Can you please be more specific? Is the shading missing? Animation dysfunctional? Tools aren't shown in materials?

 

Hi janaza,
the issue is related to animation mechanic.
Sorry, I forgot videos... Here you can find:

1) Blender situation (works well):

2) After exported in FBX

In attachment (first post) you can find the blender model.

thank you

 

Tested it out. Everything's seems perfect




My guess is you're having trouble with the Animator Controller placement. Double check it is attached to the head of your 3D model. If problem persists. Consider updating your unity version to the latest one.

 

Oh. Awesome.
Please: could you post you fbx export settings on blender and you import settings in unity?

 

I ran into problem where my models imported from Blender to Unity were never aligned in same forward axis.
I knew it was possible to do it correctly with just the right settings without rotating manually your model because I already had success with few models, then I forgot how to do. This made my blood boiling for few days.
I finally managed to reproduce the rights settings :
In blender, export to fbx with [forward = -y] and [up = z] (in fact let the blender system as it is)
do not tick apply transform.
then in Unity, at import settings, tick [bake axis conversion]
I do not work yet with animated or bones models, so I only tested this for simple mesh.

 

everything's default.

 

Sorry Junaza, I tried a lot of times without success.
In Unity the eyes won't move.
I exported with default settings.

please give me screenshots of blender export and unity import just to double check.

I use Unity 2020.1 and Blender 2.92

Thanks a lot

 

Thank you but it seems not the right solution for my animation.
Than mesh appear ok. All animations won't be applied

 

yeah and I think I was wrong anyway...
the correct settings for the mesh's orientation are forward = -Z, up = Y, apply transform.
Then for the animations I don't know. I animate all my assets by scripts.
I found this https://www.reddit.com/r/Unity3D/comments/adu35q/perfect_fbx_export_settings_from_blender_28_to
it's a bit old.

 

Up.
I tried a lot of time without success.

 

How are you playing the animation in Unity? Did you create a mecanim animator controller?

 

Hi, I create a macanim animator but I think the problem is related to blender exports... If i export a fax and I play with a free FBX tool I have the same result.

I attached by .blend file, .fbx exported and export setting.

Thank you for your help

 

I'm not actually seeing any animation happening in Unity at all. I've playing with the import settings and it's not making any difference. There are definitely some strange things about your file, though.

THe thing to remember about Blender, Maya and all of these other 3D modelling packages are very open-ended with lot's of different ways to set-up objects and animate them. Unity (and other game engines) only import a specific type of set-up/animation so a majority of Blender's features are not going to be compatible. The FBX file format is limited also.

The main thing is that I don't believe that animation using "tracking" constraints is supported at all, only bone animation. You normally want to implement your animated object as a skinned mesh (That is, your mesh must be attached to an armature via vertex weights.) I think you can also simply make the armature to be the parent of your eye (then select a specific bone to move the eye).
Blender Manual on Mesh Skinning: https://docs.blender.org/manual/en/latest/animation/armatures/skinning/parenting.html

Also, you want to have one, single armature for your model. I'm pretty sure multiple armatures are not supported, so you'll want to combine them all into a single armature.

As an alternative to bone animation, Shape keys are also supported in Unity and often times used for face animation, but I've never used those so not sure how to set them up for Unity.

 

Hello, I do not know if it may be useful, but I have just found this addon for blender that seems to help with exporting Blender to Unity 3D.

https://github.com/EdyJ/blender-to-unity-fbx-exporter

I have not tested it myself for animations, but it seems that may be interesting to try it

HOW TO EXPORT BLENDER MATERIALS TO UNITY 2019.4

The above fbx exporter addon DOES NOT export correctly the materials to unity, I mean that it will export ONLY the mesh itself and NOT the materials, because when you import it in Unity you get an grey mesh without any material

For example, I bought this ring that shows a beautiful glowing material in blender, but if you export it to Unity 2019.4 all you get is a grey mesh

https://www.cgtrader.com/3d-models/military/other/the-one-ring-71bf272f-015b-48d0-877f-a59e0bfdc0c7

So the the main problem for me is exporting from blender to Unity are that the blender materials are NOT exported to Unity because when loaded the mesh into unity is without material

Sorry that I have not tested any newer Unity version

Thanks for any possible help

 

In the previous above post here, I have put that I have problems with getting the textures or materials from blender, and I have tested what you have told in the video, but it DOES NOT work for me, because it extracts an empty material and is still gray with no materials or textures taken from the original model in blender

thanks very much for any possible help

 

Blender materials are not compatible with Unity. Aside from UV unwrapping, don't even bother trying to set-up materials in Blender.

You can use Blender to bake AO maps and normal maps, stuff like that. But you'll need to set-up the actual materials in Unity.

 

Thanks for your answer, good to know, will try to bake the maps and see how it works.

Sorry that I thought that there could be a way to attach the Material to an FBX and import it directly without manually creating the material yourself in Unity

 

I have just found this product in the blender market that seems to be able to transfer a Blender scene and objects with all the materials to Unity 3D and keeping all the same, although I have not tested it myself

B2u - Blender To Unity Prefab And Scene Exporter

https://blendermarket.com/products/b2u

although this product is from 4 years ago so do not know what may happen

Have anyone used this ?

Thanks for any possible help

best wishes