Jan Sikorski (@jsikorski) commented about dlls/wined3d/utils.c:
{WINED3DFMT_B8G8R8X8_UNORM_SRGB, VK_FORMAT_B8G8R8A8_SRGB, "XYZ1"}, {WINED3DFMT_B5G6R5_UNORM, VK_FORMAT_R5G6B5_UNORM_PACK16, }, {WINED3DFMT_B5G5R5A1_UNORM, VK_FORMAT_A1R5G5B5_UNORM_PACK16, },
{WINED3DFMT_B4G4R4A4_UNORM, VK_FORMAT_R4G4B4A4_UNORM_PACK16, "YZWX"},
It looks like it should be `ZYXW`, or am I reading the fixup wrong?