[Bug 30019] The Chosen (Well of Souls) demo - terrible performance in mid-game

http://bugs.winehq.org/show_bug.cgi?id=30019

--- Comment #4 from Stefan Dösinger  2012-02-26 16:43:03 CST ---
Created attachment 39097
  --> http://bugs.winehq.org/attachment.cgi?id=39097
wined3d: Do not use double-buffered dynamic buffers

This patch, on top of attachment 39092 fixes performance in this game. Please
give it a try.

The main thing I am worried is that the game crashes when it saves the game, or
at least during the first autosave once you move a few steps north. I'm not
sure if this patch causes this issue. It looks unrelated(The game passes a
broken DDSURFACEDESC2 to Surface::Lock), but the VBO dropping in PreLoad is
ugly and fragile.