This 3D cartoon city contains a large amount of geometry and assets — and today, I wanted to see if the Untold Engine could actually stream it into the Apple Vision Pro in real time.
The challenge is that XR devices like the Vision Pro are very memory constrained when rendering large-scale scenes. Loading everything at once can easily overwhelm the renderer or crash the application entirely.
So instead of loading the full city into memory, the Untold Engine dynamically streams assets in and out around the camera as the user moves through the environment.
In this video, I:
- Import the city into the Untold Editor
- Convert the scene into the Untold streaming format
- Build and deploy the project to the Apple Vision Pro
- Test the streaming system outdoors in a real park
During testing, I also discovered an important limitation with large-scale tile streaming that I’ll be improving in future updates.
The Untold Engine is a Swift + Metal renderer focused on real-time rendering and XR for Apple platforms.
🔗 Untold Engine: Untold Engine GitHub
🔗 Documentation: Untold Engine Docs
