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AFAIK Apple does not allow applications to render traditionally nor gives them access to the camera or other interesting effects. You are instead given a DOM (

AFAIK Apple does not allow applications to render traditionally nor gives them access to the camera or other interesting effects. You are instead given a DOM (really imagine idiosyncratic SVG for 3D) API and you must facade it to your engine object model. Apple has forced library developers into a situation even worse than Metal: a single, idiosyncratic scene graph like API. None of the performance benefits of using the technology natively. None of the DX benefits of single code, run anywhere, since everything has to be aware of the spatial rendering limitations. It’s like Negative React Native: they had you a weird React that’s non native, and you must wrap it. Truly, and I have no hesitation here because I will never want to work for Apple and they’re going downhill: this PR has its head so far up its butt. Maybe this employee should have spent all this time convincing Apple to give developers access to the GPU.

dagmx 2y ago
Your comment is highly incorrect You can render traditionally all you want with metal. You just don’t get some of the features like camera access, or gaze. Which does have its downsides, but is a long way from what you’re describing. I’ve ported a metal based renderer to visionOS for companies already, and you already have engines like Unreal supporting it too. I’m not even sure what DOM you’re talking about. SwiftUI? RealityKit? The former is for Ui. The latter is an ECS like rendering engine. But neither fit what you describe. Perhaps before being outraged by things you should be familiar with development on them first.
- doctorpangloss 2y ago
  It's true, I stopped paying attention to the AVP after I returned it. At the time it was released, which is not that long ago, AVP didn't support what I see is now called "mixed immersion mode." Unity's rendering was built upon the cockamamie scheme Apple had at launch and is the one I was describing in my comment, which is all I was familiar with. Broadly speaking, you caught me, I don't stay up to date about stuff where everyone knows ahead of time that there is no audience. That's not your fault or my fault, it's Apple's fault.

dagmx 2y ago

Your comment is highly incorrect You can render traditionally all you want with metal. You just don’t get some of the features like camera access, or gaze. Which does have its downsides, but is a long way from what you’re describing. I’ve ported a metal based renderer to visionOS for companies already, and you already have engines like Unreal supporting it too. I’m not even sure what DOM you’re talking about. SwiftUI? RealityKit? The former is for Ui. The latter is an ECS like rendering engine. But neither fit what you describe. Perhaps before being outraged by things you should be familiar with development on them first.

doctorpangloss 2y ago
It's true, I stopped paying attention to the AVP after I returned it. At the time it was released, which is not that long ago, AVP didn't support what I see is now called "mixed immersion mode." Unity's rendering was built upon the cockamamie scheme Apple had at launch and is the one I was describing in my comment, which is all I was familiar with. Broadly speaking, you caught me, I don't stay up to date about stuff where everyone knows ahead of time that there is no audience. That's not your fault or my fault, it's Apple's fault.