Add Metal Reflectance Node

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/PBR.meta

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+guid: bc2d9fef9660c574dad26112f3061731
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MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/PBR/MetalReflectanceNode.cs

+using System.Reflection;
+using UnityEngine;
+using UnityEditor.Graphing;
+using UnityEditor.ShaderGraph.Drawing.Controls;
+
+namespace UnityEditor.ShaderGraph
+{
+    public enum MetalMaterial
+    {
+        Iron,
+        Silver,
+        Aluminium,
+        Gold,
+        Copper,
+        Chromium,
+        Nickel,
+        Titanium,
+        Cobalt,
+        Platinum
+    };
+
+    [Title("Input", "PBR", "Metal Reflectance")]
+    public class MetalReflectanceNode : AbstractMaterialNode, IGeneratesBodyCode
+    {
+        public MetalReflectanceNode()
+        {
+            name = "Metal Reflectance";
+            UpdateNodeAfterDeserialization();
+        }
+
+        [SerializeField]
+        private MetalMaterial m_Material = MetalMaterial.Iron;
+
+        [EnumControl("Material")]
+        public MetalMaterial material
+        {
+            get { return m_Material; }
+            set
+            {
+                if (m_Material == value)
+                    return;
+
+                m_Material = value;
+                Dirty(ModificationScope.Graph);
+            }
+        }
+
+        private const int kOutputSlotId = 0;
+        private const string kOutputSlotName = "Out";
+
+        public override bool hasPreview { get { return true; } }
+        public override PreviewMode previewMode
+        {
+            get { return PreviewMode.Preview2D; }
+        }
+
+
+        public sealed override void UpdateNodeAfterDeserialization()
+        {
+            AddSlot(new Vector3MaterialSlot(kOutputSlotId, kOutputSlotName, kOutputSlotName, SlotType.Output, Vector3.zero));
+            RemoveSlotsNameNotMatching(new[] { kOutputSlotId });
+        }
+
+        public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
+        {
+            switch (m_Material)
+            {
+                case MetalMaterial.Silver:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.972, 0.960, 0.915);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Aluminium:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.913, 0.921, 0.925);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Gold:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(1.000, 0.766, 0.336);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Copper:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.955, 0.637, 0.538);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Chromium:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.550, 0.556, 0.554);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Nickel:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.660, 0.609, 0.526);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Titanium:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.542, 0.497, 0.449);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Cobalt:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.662, 0.655, 0.634);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                case MetalMaterial.Platinum:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.672, 0.637, 0.585);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+                default:
+                    visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3(0.560, 0.570, 0.580);", precision, GetVariableNameForSlot(kOutputSlotId)), true);
+                    break;
+            }
+        }
+    }
+}

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/PBR/MetalReflectanceNode.cs.meta

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