Update the shadow strength

b/17486691

Change-Id: I8e8f0b64e757772c18f038f6b329ef91a4e155a5
diff --git a/libs/hwui/ShadowTessellator.cpp b/libs/hwui/ShadowTessellator.cpp
index c1ffa0a..35cc7a4 100644
--- a/libs/hwui/ShadowTessellator.cpp
+++ b/libs/hwui/ShadowTessellator.cpp
@@ -37,7 +37,7 @@
 
     // A bunch of parameters to tweak the shadow.
     // TODO: Allow some of these changable by debug settings or APIs.
-    float heightFactor = 1.0f / 128;
+    float heightFactor = 1.0f / 86;
     const float geomFactor = 64;
 
     Caches& caches = Caches::getInstance();