http://bugs.winehq.org/show_bug.cgi?id=27630
--- Comment #8 from Stefan Dösinger stefandoesinger@gmx.at 2011-07-05 02:48:50 CDT --- Writing a test for fglrx is on my todo list, maybe today or tomorrow. I have a rough idea what may be wrong, but that'd no guarantee that my test is going to work. Catching timing bugs in stripped down test cases is very difficult.
Usually we don't reverse commits because of broken drivers. In this case however we have a separate problem on nvidia cards, and we already disabled GL_ARB_map_buffer_range once.