Question How can I create a 16 bit depth buffer on iOS?

According to here : https://developer.apple.com/documentation/metal/mtlpixelformat/mtlpixelformatdepth16unorm iOS has supported 16 bit depth buffers since iOS 13. Is this supported in Unity? I am using 2020.3, and it always defaults to 32 bit, even if I explicitly set RenderTextureDescriptor.depthBufferBits to 16. Is this a bug, or does Unity not have functionality for this yet?

 

2 week bump.

This would make a big difference as mobile platforms are very bandwidth limited, so enabling this where possible would be great!! For example, in shadow passes and other depth only passes.