commit ce9f308063cc2bc7851f3f58c881da8a7271eecc
author John Reck <jreck@google.com> Tue Jun 17 16:18:09 2014 -0700
committer John Reck <jreck@google.com> Wed Jun 18 07:19:50 2014 -0700
tree f153d877f331bd2d20e43b87aeafb0e531bff941
parent 4193730ad8d3c17f807a6b2f7df16510491a3432

Fix dirty calculation for layer updates

 Bug: 15682142

 Defer early return of alpha <= 0 for damage accumulation until
 popTransform() so that layer updates will be performed regardless
 of alpha

Change-Id: Ifb94dd3ed2d96d610e6f2f3071933903016273a5

libs/hwui/DamageAccumulator.cpp

diff --git a/libs/hwui/DamageAccumulator.cpp b/libs/hwui/DamageAccumulator.cpp
index 77d16ab..8b32c40 100644
--- a/libs/hwui/DamageAccumulator.cpp
+++ b/libs/hwui/DamageAccumulator.cpp
@@ -170,6 +170,9 @@
     }
 
     const RenderProperties& props = frame->renderNode->properties();
+    if (props.getAlpha() <= 0) {
+        return;
+    }
 
     // Perform clipping
     if (props.getClipDamageToBounds() && !frame->pendingDirty.isEmpty()) {