http://bugs.winehq.org/show_bug.cgi?id=22971
--- Comment #28 from Andrew Fister temposs@gmail.com 2010-08-07 16:35:09 --- Regarding the upside down rendering issue, there is bug 23904. It appears to be a regression bug with wine 1.3.0. I get the same status of decent performance but upside down rendering with 1.3.0. wine 1.2 renders right side up, but the units aren't rendered for me. Not playable either way.
I think we'll just have to wait for a fix to bug 23904 unless someone finds a magical hidden OffscreenRenderingMode setting for flipping the render.