diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 63f6781..33f0796 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -871,6 +871,12 @@
     this->visibleNonTransparentRegion = setVisibleNonTransparentRegion;
 }
 
+void Layer::clearVisibilityRegions() {
+    visibleRegion.clear();
+    visibleNonTransparentRegion.clear();
+    coveredRegion.clear();
+}
+
 // ----------------------------------------------------------------------------
 // transaction
 // ----------------------------------------------------------------------------