http://bugs.winehq.org/show_bug.cgi?id=22422
--- Comment #8 from Henri Verbeet hverbeet@gmail.com 2010-04-20 11:12:05 --- (In reply to comment #7)
That could probably be changed to a WARN at this point.
I don't think so, we really like to know about GL errors. I think the current trade-off between being notified about GL errors and the minor performance hit that causes is perfectly reasonable for normal purposes.