Property support for light positioning.

Tune up the light size to make it look better.

Change-Id: I139a05f3dd53dacbe55759b91188f0e1cc2c7f80
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 8fb6e38..7ee803f 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -3200,9 +3200,12 @@
     drawVertexBuffer(ambientShadowVertexBuffer, &paint);
 
     VertexBuffer spotShadowVertexBuffer;
-    ShadowTessellator::tessellateSpotShadow(width, height,
+    Vector3 lightPosScale(mCaches.propertyLightPosXScale,
+            mCaches.propertyLightPosYScale, mCaches.propertyLightPosZScale);
+    ShadowTessellator::tessellateSpotShadow(width, height, lightPosScale,
             *currentTransform(), getWidth(), getHeight(),
             casterTransform, spotShadowVertexBuffer);
+
     drawVertexBuffer(spotShadowVertexBuffer, &paint);
 
     return DrawGlInfo::kStatusDrew;