http://bugs.winehq.org/show_bug.cgi?id=6997
------- Additional Comments From hverbeet@gmail.com 2007-04-01 07:03 ------- Well, the depth buffer is shared between onscreen and offscreen in D3D, so it's probably the device's implicit depth buffer that's bound to the FBO. If depth testing is disabled we might be able to skip the copy, although we would have to take care to copy it anyway if that state is later enabled again.