commit 9c87defdde0d2016f8a8daebccfa31879e872306
author Ady Abraham <adyabr@google.com> Thu Feb 18 11:25:28 2021 -0800
committer Ady Abraham <adyabr@google.com> Wed Feb 24 11:32:41 2021 -0800
tree 34e4a3bbdf33014bb7b60096d3656db819c1ff47
parent e28d8aba519a41f9d1d2b04ff0fa8471a0cbee03

SF: add a sysprop to control layer caching

Bug: 158790260
Test: SF unit tests
Change-Id: I7ce6e781a480ceeeefa515cdb20bb82b618f2291

services/surfaceflinger/SurfaceFlingerProperties.cpp

diff --git a/services/surfaceflinger/SurfaceFlingerProperties.cpp b/services/surfaceflinger/SurfaceFlingerProperties.cpp
index c043866..b3dca78 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.cpp
+++ b/services/surfaceflinger/SurfaceFlingerProperties.cpp
@@ -380,5 +380,9 @@
     return SurfaceFlingerProperties::enable_frame_rate_override().value_or(defaultValue);
 }
 
+bool enable_layer_caching(bool defaultValue) {
+    return SurfaceFlingerProperties::enable_layer_caching().value_or(defaultValue);
+}
+
 } // namespace sysprop
 } // namespace android

services/surfaceflinger/SurfaceFlingerProperties.h

diff --git a/services/surfaceflinger/SurfaceFlingerProperties.h b/services/surfaceflinger/SurfaceFlingerProperties.h
index 816cb09..b19d216 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.h
+++ b/services/surfaceflinger/SurfaceFlingerProperties.h
@@ -100,6 +100,8 @@
 
 bool enable_frame_rate_override(bool defaultValue);
 
+bool enable_layer_caching(bool defaultValue);
+
 } // namespace sysprop
 } // namespace android
 #endif // SURFACEFLINGERPROPERTIES_H_

services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop

diff --git a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
index 4d25a7a..ee5542d 100644
--- a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
+++ b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
@@ -454,3 +454,12 @@
     access: Readonly
     prop_name: "ro.surface_flinger.enable_frame_rate_override"
 }
+
+# Enables Layer Caching
+prop {
+    api_name: "enable_layer_caching"
+    type: Boolean
+    scope: Public
+    access: Readonly
+    prop_name: "ro.surface_flinger.enable_layer_caching"
+}

services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt

diff --git a/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt b/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt
index 0e0be09..47e14f6 100644
--- a/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt
+++ b/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt
@@ -45,6 +45,10 @@
     prop_name: "ro.surface_flinger.enable_frame_rate_override"
   }
   prop {
+    api_name: "enable_layer_caching"
+    prop_name: "ro.surface_flinger.enable_layer_caching"
+  }
+  prop {
     api_name: "enable_protected_contents"
     prop_name: "ro.surface_flinger.protected_contents"
   }