From 2168e2de244500d912dbeb43ac4065c327baddf5 Mon Sep 17 00:00:00 2001
From: Ichitaro Kohara <ichitaro.kohara@sonyericsson.com>
Date: Thu, 17 Feb 2011 12:31:23 +0100
Subject: [PATCH] Fixed to call computeVisibleRegions() when transparent value
 changed

When some Surfaces are overlapping and one of them changed to
transparent or opaque, the back Surfaces should appear or
disappear. This patch calls SurfaceFlinger::computeVisibleRegions()
to re-calculate region of each Surface to implement the behavior.

Change-Id: Iffb1caf1b4ce28dff252e114fe5b9b07d9c84a6f
---
 services/surfaceflinger/LayerBuffer.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/surfaceflinger/LayerBuffer.cpp b/services/surfaceflinger/LayerBuffer.cpp
index 23506cfbc..55d859dc1 100644
--- a/services/surfaceflinger/LayerBuffer.cpp
+++ b/services/surfaceflinger/LayerBuffer.cpp
@@ -93,6 +93,9 @@ bool LayerBuffer::needsBlending() const {
 }
 
 void LayerBuffer::setNeedsBlending(bool blending) {
+    if (mNeedsBlending != blending) {
+        mFlinger->invalidateLayerVisibility(this);
+    }
     mNeedsBlending = blending;
 }