A port of the Memoji editor from Xcode 11's iOS Simulator to macOS Catalyst.

What works

• Launching the Memoji editor

What's broken

• I can't build this into a working app yet; it only runs inside Xcode for now
• Massive lag when clicking on anything, as it tries to save the Memoji to a non-existant XPC service
• For some reason, the Memoji are extremely polygonal - it seems tesselation is broken or turned off?

What will probably never work

• Face tracking isn't included in the simulator code, so that won't work. (Unless someone wants to reverse engineer and reimplement it?)

How to try this

• Install Xcode 11.0 on macOS Catalina 10.15
• Install LLVM from LLVM's releases page
• Install Python 3
• cd CopyAvatarFrameworks
• Create a llvm_path.conf file containing the path to your LLVM installation
• ./copy_avatar_frameworks.sh
• open the project in Xcode
• Click LaurelmojiCatalyst -> "Edit Scheme" -> "Arguments" -> "Environment Variables"
• Add:
  • DYLD_FORCE_FLAT_NAMESPACE = 1
  • SIMULATOR_SHARED_RESOURCES_DIRECTORY = /tmp
• Build and run in Xcode.

Further information

See my blog for my previous research:

• porting Memoji
• extracting Metal shaders

License

MIT.