commit 9f51644abf203968b2b108441d63425de8a35c08
author John Reck <jreck@google.com> Mon Sep 25 10:27:21 2017 -0700
committer Makoto Onuki <omakoto@google.com> Wed Dec 06 13:59:19 2017 -0800
tree a87a4255c46704a8d1f21aa368d7b482868c2737
parent a044c1d27e9380d649b6b9dadfb582136be5fa79

Extreme battery saver: Allow lowering framerate for experiments.

Bug: 68769804
Test: manual
Change-Id: Ic0c95f32c7ba6d86a997997e480e6d8a5f228f25

libs/hwui/Properties.cpp

diff --git a/libs/hwui/Properties.cpp b/libs/hwui/Properties.cpp
index d41db63..4243e7e 100644
--- a/libs/hwui/Properties.cpp
+++ b/libs/hwui/Properties.cpp
@@ -59,6 +59,7 @@
 bool Properties::filterOutTestOverhead = false;
 bool Properties::disableVsync = false;
 bool Properties::skpCaptureEnabled = false;
+bool Properties::enableRTAnimations = true;
 
 static int property_get_int(const char* key, int defaultValue) {
     char buf[PROPERTY_VALUE_MAX] = {

libs/hwui/Properties.h

diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index 9c30e4a..af4b694 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -255,6 +255,9 @@
 
     static bool skpCaptureEnabled;
 
+    // For experimentation b/68769804
+    ANDROID_API static bool enableRTAnimations;
+
     // Used for testing only to change the render pipeline.
     static void overrideRenderPipelineType(RenderPipelineType);
 

libs/hwui/renderthread/CanvasContext.cpp

diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index b7bb2d15..820789d 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -34,6 +34,7 @@
 #include "renderstate/Stencil.h"
 #include "utils/GLUtils.h"
 #include "utils/TimeUtils.h"
+#include "../Properties.h"
 
 #include <cutils/properties.h>
 #include <google/protobuf/io/zero_copy_stream_impl.h>
@@ -375,6 +376,9 @@
     }
 
     if (info.out.hasAnimations || !info.out.canDrawThisFrame) {
+        if (CC_UNLIKELY(!Properties::enableRTAnimations)) {
+            info.out.requiresUiRedraw = true;
+        }
         if (!info.out.requiresUiRedraw) {
             // If animationsNeedsRedraw is set don't bother posting for an RT anim
             // as we will just end up fighting the UI thread.