> I'm also not sure why Apple won't at least support Vulkan in addition to Metal, but that's probably a different discussion.
Likely for the same reason Microsoft doesn't support Vulkan - they want to have full control over their own graphics API.
The only commercially licensed/supported platform that requires Vulkan AFAIK is Android 10+ on 64-bit devices. However, I don't believe Google ever stepped up to standardize high performance graphics, so Vulkan was their best jump after OpenGLES started to sink.
Likely for the same reason Microsoft doesn't support Vulkan - they want to have full control over their own graphics API.
The only commercially licensed/supported platform that requires Vulkan AFAIK is Android 10+ on 64-bit devices. However, I don't believe Google ever stepped up to standardize high performance graphics, so Vulkan was their best jump after OpenGLES started to sink.