Unity Guide

Simple Export ships with an FBX preset for Unity. Select the correct preset in Properties -> Output -> Simple Export -> Preset. The preset ensures that the following settings are configured correctly.FBX is the recommended format for importing assets into Unity. It is widely supported and the current industry standard.

Export from Blender

Exporting static assets to Unity is straightforward and only requires 3 simple steps:

Step 1: Select the Unity Preset

Make sure the Unity-default preset is selected

Step 2: Create an Export Collection

Create an export collection - that will now automatically apply the settings for Unity. This can be done by using the plus button in the Export List, right-clicking on the collection in the Outliner or right-clicking on the parent object in the 3D Viewport

Step 3: Move the Collection to the Origin

Select Move by Collection Center in the Pre Export Defaults to move the collection to the origin based on the collection offset. This is important for Unity, as it expects the pivot point of the mesh to be at the origin.

Step 4: Export the Collection

Export the collection from the Export List, the Outliner or by exporting all selected collections.

Import to Unity

You can now simply import your asset into Unity by dragging and dropping the exported FBX file into the Unity or using the import asset. One thing to consider to clean up the transformations is to Bake Axis Conversion in the import settings. This will ensure that the mesh is imported with the correct transformations and orientation. This will ensure that there are no weird rotaitons on the asset.

Import_unity.jpg

Step by step:

  1. Drag and drop the FBX file into the Unity Project window
  2. Select the FBX file in the Project window
  3. In the Inspector window, under the Model tab, check the "Bake Axis Conversion" option
  4. Click "Apply" to save the changes
  5. Now you can drag and drop the model into your scene

The Simple Unity Export Preset

Here is a breakdown of the Unity preset settings. You should be able to have transparency over what happens with your assets on export.

General Settings

Setting Value Notes
Path Mode Strip Path Keeps only the name of references and discards the path.
Scale 1.0 Global Scale
object_types 'MESH', 'OTHER', EMPTY', 'ARMATURE' Mesh should be obvious, Other enables object types like curves and metaballs to generate high poly geometry and empties are enabled as they may also contain object information when using systems like the collection instancing.
Custom Properties True Custom Properties can make the files slightly bigger but can be useful for passing on additional data in your pipeline.

Transformation Settings

Setting Value Notes
Apply Scaling FBX Unit Scale Apply custom scaling to each object transformation, and units scaling to FBX scale. Offers the most consistent and reliable scaling.
Forward Axis - Y Forward Blenders forward axis is defined by -Y
Up Axis Z Up Blenders upward axis is defined by Z-up
Apply Unit ✅ Enabled Ensures proper world orientation
Use Space Transform ❌ Disabled Use Space Transform, Apply global space transform to the object rotations. When disabled only the axis space is written to the file and all object transforms are left as-is. Use Space transform can make the export easier but has certain technical limitation especially when working with animated meshes and deep hiererchies. It is therefore disabled.
Apply Transform ❌ Disabled Apply Transform, Bake space transform into object data, avoids getting unwanted rotations to objects when target space is not aligned with Blender’s space (WARNING! experimental option, use at own risk, known to be broken with armatures/animations)

Shading Settings

Setting Value Notes
Smoothing Normals Only Smoothing, Export smoothing information (prefer ‘Normals Only’ option if your target importer understand split normals) which Unity does.
Apply Modifiers ✅ Enabled Apply objects modifiers on export
Tangent Space ❌ Disabled Unity uses by default the Mikktspace, the same Tangent space used by Blender. It is therefore not necessary to export the tangent space
Triangulate Faces ❌ Disabled While it is generally recommended to triangulate meshes before export, doing it in the exporter does not maintain custom normals and can therefore cause completely broken and unpredictable results.
Setting Value Notes
Only Deform Bones ❌ Disabled Unreal doesn’t need extra bones
Armature FBXNode Type NULL FBX type of node (object) used to represent Blender’s armatures (use the Null type unless you experience issues with the other app, as other choices may not import back perfectly into Blender…) ‘Null’ FBX node, similar to Blender’s Empty (default).
Primary Bone Axis Y Primary Bone Axis
Secondary Bone Axis X Secondary Bone Axis
Add Leaf Bones ✅ Enabled Unreal doesn’t need extra bones
Animation Export ❌ Disabled Only exporting static meshes
Bake Anim ❌ Disabled Do not export baked keyframe animation
Key All Bones ✅ Enabled Key All Bones, Force exporting at least one key of animation for all bones (needed with some target applications, like UE4)
NLA Strips ✅ Enabled NLA Strips, Export each non-muted NLA strip as a separated FBX’s AnimStack, if any, instead of global scene animation
All Actions ❌ Disabled All Actions, Export each action as a separated FBX’s AnimStack, instead of global scene animation (note that animated objects will get all actions compatible with them, others will get no animation at all)
Force Start/End Keying ✅ Enabled Force Start/End Keying, Always add a keyframe at start and end of actions for animated channels

Furhter References and Resources: