Comment # 55 on bug 101731 from Samuel Pitoiset

Okay, the hack doesn't work for you, Mesa fails to link because the varying
name is not the same.

What version of wine are you using? FWIW, I'm building my local copy from
bb16263fe1974851f495435fef9a3d57fa2d4aa9 with all wine-staging patches applied
on top of that commit.