http://bugs.winehq.org/show_bug.cgi?id=58688
--- Comment #19 from Stian Low wineryyyyy@gmail.com --- (In reply to Zeb Figura from comment #16)
https://github.com/xenia-canary/xenia-canary/blob/canary_experimental/src/ xenia/base/threading_win.cc#L310
NtSetEventBoostPriority is the only explicit call by Xenia Canary of all the stubs added by commit ed9f31120b6 so it seems unnecessary to flesh the others at least for resolving this bug report.
NtSetEventBoostPriority also does not seem to be the cause of the black screen displayed instead of graphics rendered because it still occurs for my 10.12 builds which is before the stubs were added.