http://bugs.winehq.org/show_bug.cgi?id=18824
--- Comment #14 from Stefan Dösinger stefandoesinger@gmx.at 2009-06-08 11:59:05 --- Yep, something seems to go wrong in the buffer. Can you add some logs to buffer_map to see if it enters the glMapBuffer path, or the path that uses the self-allocated This->resouce.allocatedMemory?