[fix]Partial fix to rendering not being updated. Not complete but getting there.

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Editor/Drawing/Presenters/GraphControlPresenter.cs

 using System;
 using UIElements.GraphView;
+using UnityEditor.MaterialGraph.Drawing;
 using UnityEngine;
 using UnityEngine.Graphing;
 
-    public abstract class GraphControlPresenter : GraphElementPresenter
+    public abstract class GraphControlPresenter : MaterialNodePresenter
     {
         public INode node { get; private set; }
 

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Editor/Drawing/SerializableGraphView.cs

             var graphDataSource = GetPresenter<AbstractGraphPresenter>();
             if (graphDataSource == null || graphDataSource.graphAsset == null)
                 return;
-            Selection.activeObject = graphDataSource.graphAsset.GetScriptableObject();
+            //Selection.activeObject = graphDataSource.graphAsset.GetScriptableObject();
         }
 
         private void PropagateSelection()

MaterialGraphProject/Assets/UnityShaderEditor/Editor/AssetCallbacks/CreateShaderGraph.cs

 using System.IO;
 using UnityEditor.ProjectWindowCallback;
+using UnityEngine.MaterialGraph;
 
 namespace UnityEditor.MaterialGraph
 {
         public override void Action(int instanceId, string pathName, string resourceFile)
         {
 			var graph = new UnityEngine.MaterialGraph.MaterialGraph();
+            graph.AddNode(new MetallicMasterNode());
 			File.WriteAllText(pathName, EditorJsonUtility.ToJson(graph));
 			AssetDatabase.Refresh ();
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/AbstractMaterialGraphInspector.cs

                     var size = Mathf.Min(r.width, r.height);
                     var image = m_NodePreviewPresenter.Render(new Vector2(size, size));
                     GUI.DrawTexture(r, image, ScaleMode.ScaleToFit);
-                    m_NodePreviewPresenter.modificationScope = ModificationScope.Node;
+                   // m_NodePreviewPresenter.modificationScope = ModificationScope.Node;
                 }
                 else
                 {

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Drawer/MaterialNodeDrawer.cs

                 UpdatePreviewTexture(m_currentPreviewData);
                 return;
             }
-            
+
             m_currentPreviewData = nodeData.elements.OfType<NodePreviewPresenter>().FirstOrDefault();
             UpdatePreviewTexture(m_currentPreviewData);
 
                 m_PreviewImage.AddToClassList("hidden");
         }
+
     }
 }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Presenters/MaterialNodePresenter.cs

             }
         }
 
+        public override UnityEngine.Object[] GetObjectsToWatch()
+        {
+            var towatch = new List<UnityEngine.Object>();
+            towatch.AddRange(base.GetObjectsToWatch());
+            towatch.Add(m_NodePreviewPresenter);
+            return towatch.ToArray();
+        }
+
         public override void OnModified(ModificationScope scope)
         {
             base.OnModified(scope);

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Presenters/NodePreviewPresenter.cs

 
         private AbstractMaterialNode m_Node;
 
-        [NonSerialized]
+        [SerializeField]
         private ModificationScope m_modificationScope;
 
         // Null means no modification is currently in progress.

MaterialGraphProject/Assets/UnityShaderEditor/Runtime/Nodes/Normal/UnpackNormalNode.cs

             name = "UnpackNormal";
         }
 
-        public override bool hasPreview
-        {
-            get { return false; }
-        }
-
-        static string Unity_Sign(
+        static string Unity_UnpackNormal(
             [Slot(0, Binding.None)] Vector4 packedNormal,
             [Slot(1, Binding.None)] out Vector3 normal)
         {