Mask VisibilityChange events when entering fullscreen mode

These sometimes (but not always) notify the client that the window
is completely obscured

1 files changed, 9 insertions, 0 deletions

diff --git a/xc/programs/Xserver/GL/dri/dri.c b/xc/programs/Xserver/GL/dri/dri.c
index 8a1139435..2c54c8fb0 100644
--- a/xc/programs/Xserver/GL/dri/dri.c
+++ b/xc/programs/Xserver/GL/dri/dri.c
@@ -1771,6 +1771,8 @@ DRIOpenFullScreen(ScreenPtr pScreen, DrawablePtr pDrawable)
     ScrnInfoPtr        pScrn       = xf86Screens[pScreen->myNum];
     WindowPtr	       pWin        = (WindowPtr)pDrawable;
     XF86DRIClipRectPtr pClipRects  = (void *)REGION_RECTS(&pWin->clipList);
+    WindowOptPtr       optional    = pWin->optional;
+    Mask               mask        = pWin->eventMask;
     
     _DRIAdjustFrame(pScrn, pDRIPriv, pScrn->frameX0, pScrn->frameY0);
 
@@ -1796,7 +1798,14 @@ DRIOpenFullScreen(ScreenPtr pScreen, DrawablePtr pDrawable)
     AddResource(pDrawable->id, DRIFullScreenResType, (pointer)pWin);
 
     xf86EnableVTSwitch(FALSE);
+				/* Turn off visibility change events for
+                                   the top window */
+    pWin->eventMask &= ~VisibilityChangeMask;
+    pWin->optional   = NULL;
     pScrn->EnableDisableFBAccess(pScreen->myNum, FALSE);
+    pWin->eventMask  = mask;
+    pWin->optional   = optional;
+
     pScrn->vtSema        = FALSE;
     pDRIPriv->fullscreen = pDrawable;
     DRIClipNotify(pWin, 0, 0);