The FBX SDK C# bindings are available in Unity 2018.3 or later via the com.autodesk.fbx package in the Package Manager.

The bindings were built to support the Fbx Exporter package (com.unity.formats.fbx).

The bindings are a subset of the FBX SDK, and in particular they do not support all that you would need for a general-purpose importer.

• Unity 2018.4
• cmake 3.12
• swig 3.0.12 -- note that 4.0 is not compatible.
• Python 2.7.x or 3.x
• Windows: Visual Studio Community
• macOS: macOS 10.15 or later with Xcode 12.x with command-line tools installed
• Linux: not supported

Newer versions of each software likely also work, except as noted.

When installing Visual Studio, make sure to install C# sdk, C++ sdk, and Universal Windows App Development Tools (this can be done by doing a custom install or relaunching the installer and selecting "Modify").

# get the source
git clone https://github.com/Unity-Technologies/com.autodesk.fbx.git
cd com.autodesk.fbx
python build.py

Writing C# code

// Using FbxSdk Assembly

using FbxSdk;

// global functions found in FbxSdk.Globals
var a = FbxSdk.Globals.FbxGetDataTypeNameForIO(b);

var sdkManager = FbxManager.Create();

sdkManager.Destroy();

Open TestProjects/FBXSdk in Unity and run using the TestRunner.

After compiling, the documentation will be in

FbxSharp/build/docs/html/index.html

Or in zipped form in

FbxSharp/build/install/com.autodesk.fbx/Documentation~/docs.zip

In the Unity package, the documentation is packaged as the zip file.

Please create a minimal Unity project that reproduces the issue and use the Unity Bug Reporter (built in to the Unity Editor).