Export buildings from an Area in ArcGIS Pro and load it into Unity Offline

[Mir-WaissSaki]

Hi,

what is the right approach to take the buildings of an area, export them and then load them offline into Unity?

I have a 3D Scene in ArcGIS Pro with a 3D layer which has 3D Buildings coming through ArcGIS Online(OSM Buildings).

I know how to extract the basemap and the elevation :

https://community.esri.com/t5/arcgis-maps-sdk-for-unity-questions/offline-map-can-not-load-elevation...

Thank you.

[ArthurCrawford01]

From what I understand, you create a SLPK from your buildings, then publish as a service and use the ArcMaps SDK for Unity to add the service to Unity.  

[Mir-WaissSaki]

Its about offline...

You don't need to upload .slpk files anywhere to use them with the Unity SDK. These files can be loaded directly from a local path in Unity.

My question isn't about creating .slpk files, but rather about the correct approach within ArcGIS Pro. For example, I previously used Blender with a GIS add-on to create a shapefile of buildings in a specific area. I then added this shapefile as a layer in my ArcGIS Pro project, created an ObjectScene Layer, exported it as a .slpk file, and successfully loaded it into Unity.

However, my challenge is doing this entirely within ArcGIS Pro, without using Blender. For some reason, I'm unable to create an ObjectScene Layer using OSM buildings directly in ArcGIS Pro. I'm looking for the right workflow to prepare building data in ArcGIS Pro for offline use in Unity.