dx12 in Proton (and regular Wine if it is set up for it) is handled by vkd3d-proton. dxvk provides the dxgi.dll that it also needs to work.
Upstream Wine also has the original vkd3d project that vkd3d-proton was forked from originally.
ok thx
dxgi.dllx1 2025-02
Can u integrate dx 12 for dxvk because are a lot of titles are running on dx 12