https://bugs.winehq.org/show_bug.cgi?id=40128
--- Comment #1 from Dmitry Timoshkov dmitry@baikal.ru --- (In reply to Sergey Isakov from comment #0)
dlls/wined3d/state.c: 369
if (factor || !once++) FIXME("Unhandled blend factor %#x.\n", factor);
There must be "&&" to print the FIXME really once.
That's how it's supposed to work: https://github.com/wine-compholio/wine-staging/tree/master/patches/wined3d-U...
I'll leave the decision to Sebastian to resolve this bug as invalid.