[PATCH v2 0/2] MR7014: winex11: Move GL/VK offscreen if the clipping region is NULLREGION.

[Rémi Bernon (＠rbernon)]

NULLREGION means that the entire window should be clipped out, and its
children displayed instead. The change broke some offscreening decisions
when both parent and children have a GL drawable created but drawing
actually happens on the child window.

(Found while trying to reproduce otherwise unrelated regression in
https://bugs.winehq.org/show_bug.cgi?id=52738, the game there uses ddraw
and doesn't display anything after 786d9d1685ac220081b10cc779d4d331ddd2fc52)

Fixes: 786d9d1685ac220081b10cc779d4d331ddd2fc52
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57503

--
  v2: winex11: Move GL/VK offscreen if the clipping region is NULLREGION.
      winex11: Use DCX_USESTYLE when checking DC clipping regions.

https://gitlab.winehq.org/wine/wine/-/merge_requests/7014