Adjust light source for window position

Bug: 16523629
Change-Id: I2f3fed1edcac0a3cfd5034aded45e08ececfebaf
diff --git a/libs/hwui/Layer.cpp b/libs/hwui/Layer.cpp
index 458f35b..e16865e 100644
--- a/libs/hwui/Layer.cpp
+++ b/libs/hwui/Layer.cpp
@@ -90,8 +90,10 @@
         // re-init renderer's light position, based upon last cached location in window
         Vector3 lightPos = rootRenderer.getLightCenter();
         cachedInvTransformInWindow.mapPoint3d(lightPos);
-        renderer->initLight(lightPos, rootRenderer.getLightRadius(),
-                rootRenderer.getAmbientShadowAlpha(), rootRenderer.getSpotShadowAlpha());
+        renderer->initLight(rootRenderer.getLightRadius(),
+                rootRenderer.getAmbientShadowAlpha(),
+                rootRenderer.getSpotShadowAlpha());
+        renderer->setLightCenter(lightPos);
         rendererLightPosDirty = false;
     }
 }