Hi allan.jiang, Does your Mac support the Metal API? Could you try the following: In the App.cs file of the project you're trying to run, replace RenderContextMTL with RenderContextNSGL in the function CreateRenderContext. That will use the Open GL renderer insted of Metal. Please, let us know if t...

visual studio for mac.
osx 10.14.6.
Each OSX C# samples fails, just when start directly.