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

[Rémi Bernon]

From: Rémi Bernon

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.

Fixes: 786d9d1685ac220081b10cc779d4d331ddd2fc52
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57503
---
 dlls/winex11.drv/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/winex11.drv/init.c b/dlls/winex11.drv/init.c
index 82232638382..2c5e625ad83 100644
--- a/dlls/winex11.drv/init.c
+++ b/dlls/winex11.drv/init.c
@@ -211,7 +211,7 @@ static BOOL needs_client_window_clipping( HWND hwnd )
     if ((region = NtGdiCreateRectRgn( 0, 0, 0, 0 )))
     {
         ret = NtGdiGetRandomRgn( hdc, region, SYSRGN | NTGDI_RGN_MONITOR_DPI );
-        if (ret > 0 && (ret = NtGdiGetRgnBox( region, &rect )) <= NULLREGION) ret = 0;
+        if (ret > 0 && (ret = NtGdiGetRgnBox( region, &rect )) < NULLREGION) ret = 0;
         if (ret == SIMPLEREGION && EqualRect( &rect, &client )) ret = 0;
         NtGdiDeleteObjectApp( region );
     }