[PATCH 0/1] MR500: vkd3d-shader/dxil: Declare IO registers as VEC4.

[Giovanni Mascellani (＠giomasce)]

Otherwise, for instance, their write masks and swizzles are not written
in the D3D ASM dump.

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/500