https://bugs.winehq.org/show_bug.cgi?id=39421
--- Comment #6 from Stefan Dösinger stefan@codeweavers.com --- I don't see how we can do partial flushes. glFlush doesn't take any arguments.
One idea that has been floating around since a long time is to have a thread in wined3d that draws the front buffer to the screen every 1/60th second, and otherwise we don't do anything special about front buffer modifications. I guess this would fix this game here, but it isn't really trivial to implement.