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And macOS. And iOS.

Exclusively with the use of MoltenVK, which uses Metal under the hood...

Not exclusively -- gfx-portability (https://github.com/gfx-rs/portability) is another option.

Wasn't aware of that, thank you!

And anybody who is not a masochist and cares about compatibility across all those platforms will use Unity or Unreal or one of the lesser-known others.

DirectX 12 is the easiest of these APIs to use, and it's not exactly fun.

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