Merge pull request #1579 from Unity-Technologies/sg/fix-duplicate-subgraphs

Fix initialization of vector properties when duplicating subgraphs

com.unity.shadergraph/CHANGELOG.md

 - Deserialization of subgraphs now works correctly.
 - Sub graphs are now suffixed with (sub), so you can tell them apart from other nodes.
 - The preview of a node does not obstruct the selection outliner anymore.
+- You can now copy, paste, and duplicate sub-graph nodes with vector type input ports.
 - If the current render pipeline is not compatible, master nodes now display an error badge.
 - The preview shader now only considers the current render pipeline. Because of this there is less code to compile, and therefore the preview shader will compile faster.
 - When you rename a shader graph or sub shader graph locally on your disk, the title of the Shader Graph window, black board, and preview also updates.

com.unity.shadergraph/Editor/Data/Graphs/Vector1MaterialSlot.cs

         [SerializeField]
         float m_DefaultValue;
 
+        [SerializeField]
-        {}
+        {
+        }
 
         public Vector1MaterialSlot(
             int slotId,

com.unity.shadergraph/Editor/Data/Graphs/Vector2MaterialSlot.cs

         [SerializeField]
         Vector2 m_DefaultValue;
 
+        [SerializeField]
-        {}
+        {
+        }
 
         public Vector2MaterialSlot(
             int slotId,

com.unity.shadergraph/Editor/Data/Graphs/Vector3MaterialSlot.cs

         [SerializeField]
         private Vector3 m_DefaultValue;
 
+        [SerializeField]
         string[] m_Labels;
 
         public Vector3MaterialSlot()