don't enable JSITextMesh if it's not invalidated

Author: JonnyOThan

RasterPropMonitor/Core/JSITextMesh.cs

@@ -257,9 +257,6 @@ private void CreateComponents()
                 meshRenderer_.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off;
                 meshRenderer_.receiveShadows = true; // not working?
                 meshRenderer_.material = new Material(JUtil.LoadInternalShader("RPM/JSILabel"));
-
-                var enabler = gameObject.AddComponent<VisibilityEnabler>();
-                enabler.Initialize(this);
             }
         }
 
@@ -272,6 +269,19 @@ public void Start()
             CreateComponents();
         }
 
+        void OnBecameVisible()
+        {
+            if (!string.IsNullOrEmpty(text) && (invalidated || invalidatedColor))
+            {
+                enabled = true;
+            }
+        }
+
+        void OnBecameInvisible()
+        {
+            enabled = false;
+        }
+
         /// <summary>
         /// Make sure we don't leave our callback lingering.
         /// </summary>