Linux thread id can be added later though.
I suppose, though I'm not sure there's much of a point in deferring it.
I think the tid should come after the "vkd3d:" prefix? That prefix was added in 58c7c4b8064f4db7d6dc982cf08aa47d986a6913 to distinguish vkd3d output from output from applications or other libraries; I imagine we'd like to keep it at the front.