http://bugs.winehq.org/show_bug.cgi?id=9210
--- Comment #60 from Artem S. Tashkinov t.artem@mailcity.com 2013-05-15 00:20:27 CDT --- Created attachment 44471 --> http://bugs.winehq.org/attachment.cgi?id=44471 "Invalid shaders" on NVIDIA binary drivers
It looks like it's not just a warning message.
When you manually select all the tests in 3DMark06 (you need a valid license key for the professional version) and run it you get this error message:
(see the attached screenshot).
So, it's not a "minor" bug report. Something is indeed broken in terms of shaders support.