1 files changed, 4 insertions, 1 deletions
diff --git a/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h
index 7392cbfccf..9c0ba98300 100644
--- a/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h
+++ b/src/plugins/platforms/xcb/nativepainting/qpixmap_x11_p.h
@@ -90,6 +90,8 @@ public:
     void convertToARGB32(bool preserveContents = true);
 #endif
 
+    bool isBackingStore() const;
+    void setIsBackingStore(bool on);
 private:
     friend class QX11PaintEngine;
     friend const QXcbX11Info &qt_x11Info(const QPixmap &pixmap);
@@ -110,7 +112,8 @@ private:
         Uninitialized = 0x1,
         Readonly = 0x2,
         InvertedWhenBoundToTexture = 0x4,
-        GlSurfaceCreatedWithAlpha = 0x8
+        GlSurfaceCreatedWithAlpha = 0x8,
+        IsBackingStore = 0x10
     };
     uint flags;