Change small area detection to support new front end design
This will still use legacy layer to calculate the small dirty, and
update the info to the LayerSnapshot.
Also fix some issues in setIsSmallDirty() for
1. Set mSmallDirty flag as false if the surface damage region is
invalid.
2. Apply the scaling to the damage region before dirty area
calculations.
Bug: 295062543
Bug: 303258910
Bug: 303609027
Test: atest LayerHistoryTest
Test: atest SmallAreaDetectionTest
Change-Id: Ib0e3737e63b5653422b5b5054b893578dc63f768
diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshot.h b/services/surfaceflinger/FrontEnd/LayerSnapshot.h
index 80a51ea..1b6fdae 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshot.h
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshot.h
@@ -122,6 +122,8 @@
ReachableByRelativeParent
};
Reachablilty reachablilty;
+ // True when the surfaceDamage is recognized as a small area update.
+ bool isSmallDirty = false;
static bool isOpaqueFormat(PixelFormat format);
static bool isTransformValid(const ui::Transform& t);