[himata4113]

I mean they reimplemented directx without vulkan, that's indeed in a league of their own. wine/proton relies on opengl/vulkan to do anything.

[ddtaylor]

Wine has had many different DirectX backends over the decades, including one before Vulkan existed obviously.

[himata4113]

All of them relied on translation (ex: opengl). Proton specifically is focused on dx->vulkan.