From a18057de76e447ec2c5e2b6efdd4d61dcdf2ea5e Mon Sep 17 00:00:00 2001
From: Arthur Hung <arthurhung@google.com>
Date: Tue, 15 Aug 2023 01:37:36 +0000
Subject: [PATCH] Enable small dirty detection for variable refresh rate

Bug: 283055450
Test: Build
Change-Id: I670432d6e566260df3cfdc938f4ddbae70b5d47a
---
 device.mk                                           |  3 +++
 .../frameworks/base/core/res/res/values/config.xml  | 13 +++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/device.mk b/device.mk
index 919520b1..3a5f1479 100644
--- a/device.mk
+++ b/device.mk
@@ -669,6 +669,9 @@ PRODUCT_DEFAULT_PROPERTY_OVERRIDES += ro.surface_flinger.use_color_management=tr
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += ro.surface_flinger.protected_contents=true
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += ro.surface_flinger.display_update_imminent_timeout_ms=50
 
+# Enhance VRR detection
+PRODUCT_DEFAULT_PROPERTY_OVERRIDES += debug.sf.enable_small_dirty_detection=true
+
 # force to blend in P3 mode
 PRODUCT_PROPERTY_OVERRIDES += \
 	persist.sys.sf.native_mode=2 \
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index c705b94a..fb2d0380 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -280,4 +280,17 @@
 
     <!-- Enable variable refresh rate when typing. -->
     <bool name="config_variableRefreshRateTypingSupported">true</bool>
+
+    <!-- The list of packages to automatically opt in of fresh rate suppressing by small area
+    detection. Format of this array should be packageName:threshold and threshold value should
+     be between 0 to 1-->
+    <string-array name="config_smallAreaDetectionAllowlist" translatable="false">
+        <!-- Add packages:threshold here -->
+        <item>com.google.android.youtube:0.07</item>
+        <item>com.spotify.music:0.05</item>
+        <item>com.reddit.frontpage:0.07</item>
+        <item>com.zhiliaoapp.musically:0.07</item>
+        <item>com.bilibili.app.in:0.07</item>
+        <item>com.twitter.android:0.07</item>
+    </string-array>
 </resources>