Lazy load Properties::isDrawingEnabled.

Properties::isDrawingEnabled can unexpectedly return true
even if the system property debug.hwui.drawing_enabled is false,
if its called before RenderThread is created.

This commit changes the underlying logic to lazy load the
debug.hwui.drawing_enabled prop value.

Bug: 193920054
Test: call HardwareRendererCompat.isDrawingEnabled()) from a new test
Change-Id: Ib69577745c26595ed3964a4341086138dd5d34b0
(cherry picked from commit 8e1ab42f51c501949211746c46a02a7564ebf292)

1 files changed, 3 insertions, 4 deletions

diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index 73fccb67800b..7f9782bf8d20 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -214,7 +214,7 @@ enum class StretchEffectBehavior {
     UniformScale  // Uniform scale stretch everywhere
 };
 
-enum class OverrideDrawingEnabled { Default, On, Off };
+enum class DrawingEnabled { NotInitialized, On, Off };
 
 /**
  * Renderthread-only singleton which manages several static rendering properties. Most of these
@@ -309,9 +309,8 @@ public:
         stretchEffectBehavior = behavior;
     }
 
-    // Represents if GL drawing is enabled. Should only be false in headless testing environments
-    static bool drawingEnabled;
-    static OverrideDrawingEnabled overrideDrawingEnabled;
+    // Represents if drawing is enabled. Should only be Off in headless testing environments
+    static DrawingEnabled drawingEnabled;
     static bool isDrawingEnabled();
     static void setDrawingEnabled(bool enable);