From 499293f096ef3182ef39e42cc06284501022b5cf Mon Sep 17 00:00:00 2001
From: Michael Jurka <mikejurka@google.com>
Date: Wed, 6 Mar 2013 18:08:45 +0100
Subject: [PATCH] Improve swipe performance in Recents

---
 packages/SystemUI/src/com/android/systemui/SwipeHelper.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
index 8e1773ada5460..f824a8e068a05 100644
--- a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
@@ -156,6 +156,12 @@ public class SwipeHelper implements Gefingerpoken {
 
     private void updateAlphaFromOffset(View animView, boolean dismissable) {
         if (FADE_OUT_DURING_SWIPE && dismissable) {
+            float alpha = getAlphaForOffset(animView);
+            if (alpha != 0f && alpha != 1f) {
+                animView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            } else {
+                animView.setLayerType(View.LAYER_TYPE_NONE, null);
+            }
             animView.setAlpha(getAlphaForOffset(animView));
         }
         invalidateGlobalRegion(animView);