[Bug 55986] Gunner3 has flickering in fullscreen

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55986

--- Comment #1 from Fabian Maurer  ---
Created attachment 75591
  --> https://bugs.winehq.org/attachment.cgi?id=75591
Revert Patch

Bisected to
commit 4ce1d7f93a35322d149cbde29d619e2580159a80
Author: Henri Verbeet 
Date:   Tue Jan 19 14:34:55 2021 +0100

ddraw: Use BitBlt() for exclusive mode frontbuffer updates if the swapchain
window is not in the foreground.

Signed-off-by: Henri Verbeet 
    Signed-off-by: Alexandre Julliard

Doesn't revert cleanly on master, but using attached patch to revert fixes the
issue.