https://bugs.winehq.org/show_bug.cgi?id=36789
Matteo Bruni matteo.mystral@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |matteo.mystral@gmail.com
--- Comment #4 from Matteo Bruni matteo.mystral@gmail.com --- (In reply to Henri Verbeet from comment #3)
There's one other possibility, and that's that the functionality is only exposed in core profiles, either through GL 3.3, or some earlier version + ARB_blend_func_extended. In that case this is blocked on wined3d supporting GL core profiles, which will happen eventually, but may take a while.
Indeed https://developer.apple.com/graphicsimaging/opengl/capabilities/index.html suggests that the extension is supported only on core profiles.