First pass Matrix 4x4 nodes

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/AbstractMaterialNode.cs

                 case ConcreteSlotValueType.Cubemap:
                     return "Cubemap";
                 case ConcreteSlotValueType.Matrix2:
-                    return "Matrix2x2";
+                    return p + "x2x2";
-                    return "Matrix3x3";
+                    return p + "3x3";
-                    return "Matrix4x4";
+                    return p + "4x4";
                 case ConcreteSlotValueType.SamplerState:
                     return "SamplerState";
                 default:

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Matrix/Matrix4Node.cs

             RemoveSlotsNameNotMatching(new[] { kOutputSlotId });
         }
 
-        public string propertyName
+        public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
-            get
-            {
-                return string.Format("{0}_{1}_Uniform", name, GetVariableNameForNode());
-            }
+            visitor.AddShaderChunk(precision + "4x4 " + GetVariableNameForNode() + " = " + precision + "4x4 (" + row0.x + ", " + row0.y + ", " + row0.z + ", " + row0.w + ", " + m_Row1.x + ", " + m_Row1.y + ", " + m_Row1.z + ", " + m_Row1.w + ", " + m_Row2.x + ", " + m_Row2.y + ", " + m_Row2.z + ", " + m_Row2.w + ", " + m_Row3.x + ", " + m_Row3.y + ", " + m_Row3.z + ", " + m_Row3.w + ");", true);
-            return propertyName;
-        }
-
-        public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
-        {
-            //if (exposedState == ExposedState.Exposed || generationMode.IsPreview())
-            //    return;
-
-            visitor.AddShaderChunk(precision + "4x4 " + propertyName + " = " + precision + "4x4 (" + row0.x + ", " + row0.y + ", " + row0.z + ", " + row0.w + ", " + m_Row1.x + ", " + m_Row1.y + ", " + m_Row1.z + ", " + m_Row1.w + ", " + m_Row2.x + ", " + m_Row2.y + ", " + m_Row2.z + ", " + m_Row2.w + ", " + m_Row3.x + ", " + m_Row3.y + ", " + m_Row3.z + ", " + m_Row3.w + ");", true);
+            return GetVariableNameForNode();
         }
 
         [SerializeField]

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Math/Matrix/MatrixMultiplyByVectorNode.cs

 
 namespace UnityEditor.ShaderGraph
 {
-    [Title("Math", "Matrix", "MultiplyMatrixByVector")]
+    [Title("Math", "Matrix", "Multiply Matrix By Vector")]
     public class MatrixMultiplyByVectorNode : AbstractMaterialNode, IGeneratesBodyCode, IGeneratesFunction
     {
         protected const string kInputSlot1ShaderName = "Input1";
 
         public MatrixMultiplyByVectorNode()
         {
-            name = "MultiplyMatrixByVector";
+            name = "Multiply Matrix By Vector";
             UpdateNodeAfterDeserialization();
         }
 

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Math/Matrix/MatrixMultiplyNode.cs

 
 namespace UnityEditor.ShaderGraph
 {
-    [Title("Math", "Matrix", "MultiplyMatrix")]
+    [Title("Math", "Matrix", "Multiply Matrix")]
     public class MatrixMultiplyNode : AbstractMaterialNode, IGeneratesBodyCode, IGeneratesFunction
     {
         protected const string kInputSlot1ShaderName = "Input1";
 
         public MatrixMultiplyNode()
         {
-            name = "MultiplyMatrix";
+            name = "Multiply Matrix";
             UpdateNodeAfterDeserialization();
         }