(10-11-2021, 09:57 PM)fishing-rod Wrote: Hi,

I tried to keep the subject short. I migrated my project from Unity 2020 LTS on a Windows 10 Laptop to Unity 2021.2.1f1 on a M1 Mac.

It actually went way better than I though but when I enter play mode I get these type of errors spammed with different call stacks. Here are two examples:

Code:

DllNotFoundException: libOni assembly:<unknown assembly> type:<unknown type> member:(null)
Obi.OniBackend.CreateSolver (Obi.ObiSolver solver, System.Int32 capacity) (at Assets/Obi/Scripts/Common/Backends/Oni/OniBackend.cs:17)
Obi.ObiSolver.Initialize () (at Assets/Obi/Scripts/Common/Solver/ObiSolver.cs:862)
Obi.ObiSolver.AddActor (Obi.ObiActor actor) (at Assets/Obi/Scripts/Common/Solver/ObiSolver.cs:1123)
Obi.ObiActor.AddToSolver () (at Assets/Obi/Scripts/Common/Actors/ObiActor.cs:338)
Obi.ObiActor.OnEnable () (at Assets/Obi/Scripts/Common/Actors/ObiActor.cs:313)

Code:

DllNotFoundException: libOni assembly:<unknown assembly> type:<unknown type> member:(null)
Obi.OniColliderWorld.SetColliders (Obi.ObiNativeColliderShapeList shapes, Obi.ObiNativeAabbList bounds, Obi.ObiNativeAffineTransformList transforms, System.Int32 count) (at Assets/Obi/Scripts/Common/Backends/Oni/OniColliderWorld.cs:40)
Obi.ObiColliderWorld.UpdateWorld (System.Single deltaTime) (at Assets/Obi/Scripts/Common/Collisions/ObiColliderWorld.cs:388)
Obi.ObiUpdater.BeginStep (System.Single stepDeltaTime) (at Assets/Obi/Scripts/Common/Updaters/ObiUpdater.cs:42)
Obi.ObiFixedUpdater.FixedUpdate () (at Assets/Obi/Scripts/Common/Updaters/ObiFixedUpdater.cs:44)

I tried reimporting from package manager and restarting unity. I still get those errors.

(11-11-2021, 06:48 PM)fishing-rod Wrote: Thanks for your support!

I do see one libOni.a which is in the iOS folder. Is that correct? Does it matter that I'm on apple silicon (M1)?

(12-11-2021, 08:48 AM)josemendez Wrote: Everything looks fine! Upon further research, looks like the M1 processor is not backwards compatible with Intel architectures at a hardware level, Apple is using a binary translator (Rosetta 2) to allow binaries compiled for Intel to run on the M1. This might be the culprit since Unity libs might not be correctly translated (or at all) will have to test the precompiled libraries and see if they run on the M1, if they don't, I will have to recompile the libs for M1.

In the meantime you can switch to the Burst backend (which should be used when possible anyway), that will solve the issue as it does not require precompiled libs.
See: http://obi.virtualmethodstudio.com/manual/6.2/backends.html

(12-11-2021, 09:08 AM)fishing-rod Wrote: I tried to look them up in the package manager, but I could only find Burst and Mathematics. Collections and Jobs doesn't show up. Neither in the Unity Registry nor in the Built In category.

Quote:I do see the warning that it depends on the 4 packages though. Is the warning only visible when a package is missing?

(12-11-2021, 09:36 AM)josemendez Wrote: They're preview packages, you need to enable preview packages in the editor:
https://docs.unity3d.com/Manual/pack-preview.html


Once you've got the right package dependencies installed, the ObiSolver component will no longer show up any warnings when you select Burst as your backend, and the DllNotFound exception will go away.

(13-11-2021, 10:36 AM)josemendez Wrote: On a side note regarding Apple's M1:

https://forum.unity.com/threads/unity-on-apple-silicon-and-big-sur-known-issues-and-workarounds.929220/page-7

Seems like the Unity 2021.1 version installed by the hub runs on M1 using Rosetta, the native version needs to be manually downloaded and installed. Under "Component Installers macOS" you'll see a link to "Unity Editor (Apple silicon, preview)":

https://unity3d.com/beta/2021.2b#downloads

Ran into this myself while testing the libs: the Intel version of the editor doesn't run the Intel lib nor the native M1 lib.

(13-11-2021, 10:29 AM)josemendez Wrote: There's no ".../DataStructures/BurstContact.cs" file included in the package, not sure how it ended up there. The correct path is "/Obi/Scripts/Common/Backends/Burst/DataStructures/Queries/BurstContact.cs"

You can try simply deleting the /DataStructure/BurstContact.cs one, or removing the entire /Obi folder and reimporting the package to make sure files are where they should.