From 264cb2ff68495b5fccbf06811fb0a3a19a7cb011 Mon Sep 17 00:00:00 2001
From: Lucas Dupin <dupin@google.com>
Date: Wed, 29 Apr 2020 10:40:58 -0700
Subject: [PATCH] Do not blur if all apps is fully visible

Fixes: 155093795
Fixes: 155203546
Test: manual
Change-Id: I30f4c027e5107a199791e908acbb7ffed94e6a77
---
 .../launcher3/statehandlers/DepthController.java      | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index 5f5d6dc1f9..8c778c0653 100644
--- a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -193,8 +193,17 @@ public class DepthController implements LauncherStateManager.StateHandler {
         if (windowToken != null) {
             mWallpaperManager.setWallpaperZoomOut(windowToken, mDepth);
         }
+        final int blur;
+        if (mLauncher.isInState(LauncherState.ALL_APPS) && mDepth == 1) {
+            // All apps has a solid background. We don't need to draw blurs after it's fully
+            // visible. This will take us out of GPU composition, saving battery and increasing
+            // performance.
+            blur = 0;
+        } else {
+            blur = (int) (mDepth * mMaxBlurRadius);
+        }
         new TransactionCompat()
-                .setBackgroundBlurRadius(mSurface, (int) (mDepth * mMaxBlurRadius))
+                .setBackgroundBlurRadius(mSurface, blur)
                 .apply();
     }
 }