Fix Matrix Transpose node

- Cleanup and fixes in matrix slots and props

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Matrix2MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Matrix2MaterialSlot : MaterialSlot
+    public class Matrix2MaterialSlot : MaterialSlot, IMaterialSlotHasValue<Matrix4x4>
     {
         [SerializeField]
         private Matrix4x4 m_Value;
             var pp = new PreviewProperty(PropertyType.Matrix2)
             {
                 name = name,
-                vector4Value = new Vector4(value.GetRow(0).x, value.GetRow(0).y, 0, 0),
-                floatValue = value.GetRow(0).x,
-                colorValue = new Vector4(value.GetRow(0).x, value.GetRow(0).x, 0, 0)
+                vector4Value = new Vector4(value.GetRow(0).x, value.GetRow(0).y, 0, 0)
             };
             return pp;
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Matrix2ShaderProperty.cs

             get { return PropertyType.Matrix2; }
         }
 
-        public override Vector4 defaultValue
-        {
-            get { return new Vector4(); }
-        }
-
-        public override PreviewProperty GetPreviewMaterialProperty()
-        {
-            return default(PreviewProperty);
-        }
-
         public override INode ToConcreteNode()
         {
             return new Matrix2Node 

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Matrix3MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Matrix3MaterialSlot : MaterialSlot
+    public class Matrix3MaterialSlot : MaterialSlot, IMaterialSlotHasValue<Matrix4x4>
     {
         [SerializeField]
         private Matrix4x4 m_Value;
             var pp = new PreviewProperty(PropertyType.Matrix3)
             {
                 name = name,
-                vector4Value = new Vector4(value.GetRow(0).x, value.GetRow(0).y, value.GetRow(0).z, 0),
-                floatValue = value.GetRow(0).x,
-                colorValue = new Vector4(value.GetRow(0).x, value.GetRow(0).x, value.GetRow(0).z, 0)
+                vector4Value = new Vector4(value.GetRow(0).x, value.GetRow(0).y, value.GetRow(0).z, 0)
             };
             return pp;
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Matrix3ShaderProperty.cs

             get { return PropertyType.Matrix3; }
         }
 
-        public override Vector4 defaultValue
-        {
-            get { return new Vector4(); }
-        }
-
-        public override PreviewProperty GetPreviewMaterialProperty()
-        {
-            return default(PreviewProperty);
-        }
-
         public override INode ToConcreteNode()
         {
             return new Matrix3Node 

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Matrix4MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Matrix4MaterialSlot : MaterialSlot
+    public class Matrix4MaterialSlot : MaterialSlot, IMaterialSlotHasValue<Matrix4x4>
     {
         [SerializeField]
         private Matrix4x4 m_Value;
             var pp = new PreviewProperty(PropertyType.Matrix4)
             {
                 name = name,
-                vector4Value = new Vector4(value.GetRow(0).x, value.GetRow(0).y, value.GetRow(0).z, value.GetRow(0).w),
-                floatValue = value.GetRow(0).x,
-                colorValue = new Vector4(value.GetRow(0).x, value.GetRow(0).x, value.GetRow(0).z, value.GetRow(0).w)
+                vector4Value = new Vector4(value.GetRow(0).x, value.GetRow(0).y, value.GetRow(0).z, value.GetRow(0).w)
             };
             return pp;
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Matrix4ShaderProperty.cs

             get { return PropertyType.Matrix4; }
         }
 
-        public override Vector4 defaultValue
-        {
-            get { return new Vector4(); }
-        }
-
-        public override PreviewProperty GetPreviewMaterialProperty()
-        {
-            return default(PreviewProperty);
-        }
-
         public override INode ToConcreteNode()
         {
             return new Matrix4Node 

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/MatrixShaderProperty.cs

             return string.Empty;
         }
 
+        public override Vector4 defaultValue
+        {
+            get { return new Vector4(); }
+        }
+
         public override string GetPropertyDeclarationString(string delimiter = ";")
         {
             return "float4x4 " + referenceName + ";";

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

 
 namespace UnityEditor.ShaderGraph
 {
-    [Title("Math", "Matrix", "TransposeMatrix")]
+    [Title("Math", "Matrix", "Matrix Transpose")]
-            name = "TransposeMatrix";
+            name = "Matrix Transpose";
+        }
+
+        public override bool hasPreview
+        {
+            get { return false; }
-            return GetType().GetMethod("unity_MatrixTranspose_", BindingFlags.Static | BindingFlags.NonPublic);
+            return GetType().GetMethod("Unity_MatrixTranspose", BindingFlags.Static | BindingFlags.NonPublic);
-        static string unity_MatrixTranspose_(
-            [Slot(0, Binding.None)] Matrix4x4 inMatrix,
-            [Slot(1, Binding.None)] out Matrix4x4 outMatrix)
+        static string Unity_MatrixTranspose(
+            [Slot(0, Binding.None)] DynamicDimensionMatrix In,
+            [Slot(1, Binding.None)] out DynamicDimensionMatrix Out)
-            outMatrix = Matrix4x4.identity;
-    outMatrix = transpose(inMatrix);
+    Out = transpose(In);
 }
 ";
         }