http://bugs.winehq.org/show_bug.cgi?id=28078
--- Comment #13 from Stefan Dösinger stefandoesinger@gmx.at 2011-08-18 04:23:17 CDT --- Indeed, I guess you changed that a while ago. Well, that means I'm kinda out of ideas. I doubt that mixing data from a converted and unconverted buffer is the problem here because the bug still occurs without any VBOs at all.
GyB, can you attach a +d3d,+d3d_draw log with plain Wine, without any of the patches from this bug report?