[PATCH v3 1/1] winex11: Use the win32 client rect in needs_client_window_clipping.

[William Horvath]

From: William Horvath

After the change to move the sync_gl_drawable call outside the win_data
mutex in 54d82ed4, the X11 client rect used for determining whether we need
to composite/clip the drawable can be out of sync with the win32 side.
This results in offscreening when unnecessary and vice-versa.
---
 dlls/winex11.drv/init.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/dlls/winex11.drv/init.c b/dlls/winex11.drv/init.c
index 71c50df95e6..a0bfab2fb46 100644
--- a/dlls/winex11.drv/init.c
+++ b/dlls/winex11.drv/init.c
@@ -196,21 +196,18 @@ static HFONT X11DRV_SelectFont( PHYSDEV dev, HFONT hfont, UINT *aa_flags )

static BOOL needs_client_window_clipping( HWND hwnd )
 {
-    struct x11drv_win_data *data;
     RECT rect, client;
     UINT ret = 0;
     HRGN region;
     HDC hdc;

-    if (!(data = get_win_data( hwnd ))) return TRUE;
-    client = data->rects.client;
-    release_win_data( data );
+    NtUserGetClientRect( hwnd, &client, NtUserGetDpiForWindow( hwnd ) );
     OffsetRect( &client, -client.left, -client.top );

if (!(hdc = NtUserGetDCEx( hwnd, 0, DCX_CACHE | DCX_USESTYLE ))) return FALSE;
     if ((region = NtGdiCreateRectRgn( 0, 0, 0, 0 )))
     {
-        ret = NtGdiGetRandomRgn( hdc, region, SYSRGN | NTGDI_RGN_MONITOR_DPI );
+        ret = NtGdiGetRandomRgn( hdc, region, SYSRGN );
         if (ret > 0 && (ret = NtGdiGetRgnBox( region, &rect )) < NULLREGION) ret = 0;
         if (ret == SIMPLEREGION && EqualRect( &rect, &client )) ret = 0;
         NtGdiDeleteObjectApp( region );