Fix up linar / gamma state of color nodes when they get inlined.

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

+using System;
 using UnityEditor.Graphing;
 using UnityEditor.ShaderGraph.Drawing.Slots;
 using UnityEngine;
         public override VisualElement InstantiateControl()
         {
             return new ColorRGBASlotControlView(this);
+        }
+
+        protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
+        {
+            return string.Format("IsGammaSpace() ? {0}4({1}, {2}, {3}, {4}) : {0}4 (GammaToLinearSpace({0}3({1}, {2}, {3})), {4})"
+                , precision
+                , value.x
+                , value.y
+                , value.z
+                , value.w);
+        }
+
+        public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)
+        {
+            if (!generationMode.IsPreview())
+                return;
+
+            var matOwner = owner as AbstractMaterialNode;
+            if (matOwner == null)
+                throw new Exception(string.Format("Slot {0} either has no owner, or the owner is not a {1}", this, typeof(AbstractMaterialNode)));
+
+            var property = new ColorShaderProperty()
+            {
+                overrideReferenceName = matOwner.GetVariableNameForSlot(id),
+                generatePropertyBlock = false,
+                value = value
+            };
+            properties.AddShaderProperty(property);
+        }
+
+        public override PreviewProperty GetPreviewProperty(string name)
+        {
+            var pp = new PreviewProperty
+            {
+                name = name,
+                propType = PropertyType.Color,
+                vector4Value = new Vector4(value.x, value.y, value.z, value.w),
+                floatValue = value.x,
+                colorValue = new Vector4(value.x, value.x, value.z, value.w),
+            };
+            return pp;
         }
     }
 }

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

+using System;
 using UnityEditor.Graphing;
 using UnityEditor.ShaderGraph.Drawing.Slots;
 using UnityEngine;
             string displayName,
             string shaderOutputName,
             SlotType slotType,
-            Vector4 value,
+            Color value,
-            : base(slotId, displayName, shaderOutputName, slotType, value, shaderStage, hidden)
+            : base(slotId, displayName, shaderOutputName, slotType, (Vector4)value, shaderStage, hidden)
         {
         }
 
+        }
+
+        protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
+        {
+            return string.Format("IsGammaSpace() ? {0}3({1}, {2}, {3}) : GammaToLinearSpace({0}3({1}, {2}, {3}))"
+                , precision
+                , value.x
+                , value.y
+                , value.z);
+        }
+
+        public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)
+        {
+            if (!generationMode.IsPreview())
+                return;
+
+            var matOwner = owner as AbstractMaterialNode;
+            if (matOwner == null)
+                throw new Exception(string.Format("Slot {0} either has no owner, or the owner is not a {1}", this, typeof(AbstractMaterialNode)));
+
+            var property = new ColorShaderProperty()
+            {
+                overrideReferenceName = matOwner.GetVariableNameForSlot(id),
+                generatePropertyBlock = false,
+                value = new Color(value.x, value.y, value.z)
+            };
+            properties.AddShaderProperty(property);
+        }
+
+        public override PreviewProperty GetPreviewProperty(string name)
+        {
+            var pp = new PreviewProperty
+            {
+                name = name,
+                propType = PropertyType.Color,
+                vector4Value = new Vector4(value.x, value.y, value.z, 1),
+                floatValue = value.x,
+                colorValue = new Vector4(value.x, value.y, value.z, 1),
+            };
+            return pp;
         }
     }
 }

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

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class DynamicVectorMaterialSlot : MaterialSlot, IMaterialSlotHasVaule<Vector4>
+    public class DynamicVectorMaterialSlot : MaterialSlot, IMaterialSlotHasValue<Vector4>
     {
         [SerializeField]
         private Vector4 m_Value;

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

     {
         public static bool ShaderHasError(Shader shader)
         {
-            var hasErrorsCall = typeof(ShaderUtil).GetMethod("GetShaderErrorCount", BindingFlags.Static | BindingFlags.NonPublic);
-            var result = hasErrorsCall.Invoke(null, new object[] { shader });
-            return (int)result != 0;
+            return ShaderUtil.GetShaderErrorCount(shader) > 0;
         }
     }
 }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Vector1MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Vector1MaterialSlot : MaterialSlot, IMaterialSlotHasVaule<float>
+    public class Vector1MaterialSlot : MaterialSlot, IMaterialSlotHasValue<float>
     {
         [SerializeField]
         private float m_Value;

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Vector2MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Vector2MaterialSlot : MaterialSlot, IMaterialSlotHasVaule<Vector2>
+    public class Vector2MaterialSlot : MaterialSlot, IMaterialSlotHasValue<Vector2>
     {
         [SerializeField]
         private Vector2 m_Value;

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Vector3MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Vector3MaterialSlot : MaterialSlot, IMaterialSlotHasVaule<Vector3>
+    public class Vector3MaterialSlot : MaterialSlot, IMaterialSlotHasValue<Vector3>
     {
         [SerializeField]
         private Vector3 m_Value;

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/Vector4MaterialSlot.cs

 namespace UnityEditor.ShaderGraph
 {
     [Serializable]
-    public class Vector4MaterialSlot : MaterialSlot, IMaterialSlotHasVaule<Vector4>
+    public class Vector4MaterialSlot : MaterialSlot, IMaterialSlotHasValue<Vector4>
     {
         [SerializeField]
         private Vector4 m_Value;

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/IMaterialSlotHasValue.cs.meta

 fileFormatVersion: 2
-guid: 722107fbcd3d86249ac260090e5cc77e
+guid: 94492244ef44a2e48b3e7790d7ac681d
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/LightweightPipeline/PBRMasterNode.cs

         public sealed override void UpdateNodeAfterDeserialization()
         {
             name = "PBR Master";
-            AddSlot(new Vector3MaterialSlot(AlbedoSlotId, AlbedoSlotName, AlbedoSlotName, SlotType.Input, new Vector4(0.5f, 0.5f, 0.5f), ShaderStage.Fragment));
+            AddSlot(new ColorRGBMaterialSlot(AlbedoSlotId, AlbedoSlotName, AlbedoSlotName, SlotType.Input, Color.grey, ShaderStage.Fragment));
-            AddSlot(new Vector3MaterialSlot(EmissionSlotId, EmissionSlotName, EmissionSlotName, SlotType.Input, Vector3.zero, ShaderStage.Fragment));
+            AddSlot(new ColorRGBMaterialSlot(EmissionSlotId, EmissionSlotName, EmissionSlotName, SlotType.Input, Color.black, ShaderStage.Fragment));
-                AddSlot(new Vector3MaterialSlot(SpecularSlotId, SpecularSlotName, SpecularSlotName, SlotType.Input, Vector3.zero, ShaderStage.Fragment));
+                AddSlot(new ColorRGBMaterialSlot(SpecularSlotId, SpecularSlotName, SpecularSlotName, SlotType.Input, Color.grey, ShaderStage.Fragment));
             AddSlot(new Vector1MaterialSlot(SmoothnessSlotId, SmoothnessSlotName, SmoothnessSlotName, SlotType.Input, 0.5f, ShaderStage.Fragment));
             AddSlot(new Vector1MaterialSlot(OcclusionSlotId, OcclusionSlotName, OcclusionSlotName, SlotType.Input, 1f, ShaderStage.Fragment));
             AddSlot(new Vector1MaterialSlot(AlphaSlotId, AlphaSlotName, AlphaSlotName, SlotType.Input, 1f, ShaderStage.Fragment));
                 SmoothnessSlotId,
                 OcclusionSlotId,
                 AlphaSlotId
-            });
+            }, true);
         }
 
         public override string GetShader(GenerationMode mode, string outputName, out List<PropertyCollector.TextureInfo> configuredTextures)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/LightweightPipeline/UnlitMasterNode.cs

 using System.Collections.Generic;
 using System.Linq;
 using UnityEditor.Graphing;
-using UnityEditor.ShaderGraph.Drawing.Controls;
 using UnityEngine;
 
 namespace UnityEditor.ShaderGraph
         public sealed override void UpdateNodeAfterDeserialization()
         {
             name = "Unlit Master";
-            AddSlot(new Vector3MaterialSlot(ColorSlotId, ColorSlotName, ColorSlotName, SlotType.Input, new Vector3(0.5f, 0.5f, 0.5f), ShaderStage.Fragment));
+            AddSlot(new ColorRGBMaterialSlot(ColorSlotId, ColorSlotName, ColorSlotName, SlotType.Input, Color.grey, ShaderStage.Fragment));
             AddSlot(new Vector1MaterialSlot(AlphaSlotId, AlphaSlotName, AlphaSlotName, SlotType.Input, 1, ShaderStage.Fragment));
 
             // clear out slot names that do not match the slots

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Basic/ColorNode.cs

             if (generationMode.IsPreview())
                 return;
 
-            visitor.AddShaderChunk(precision + "4 " + GetVariableNameForNode() + " = " + precision + "4 (" + color.r + ", " + color.g + ", " + color.b + ", " + color.a + ");", true);
+            visitor.AddShaderChunk(string.Format(
+                @"{0}4 {1} = IsGammaSpace() ? {0}4({2}, {3}, {4}, {5}) : {0}4(GammaToLinearSpace({0}3({2}, {3}, {4})), {5});"
+                , precision
+                , GetVariableNameForNode()
+                , color.r
+                , color.g
+                , color.b
+                , color.a), true);
         }
 
         public override string GetVariableNameForSlot(int slotId)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Views/MaterialNodeView.cs

             {
                 var slots = node.GetSlots<MaterialSlot>().ToList();
 
-                var anchorsToRemove = new List<VisualElement>();
-                foreach (var anchor in inputContainer.Children())
-                    if (!slots.Contains(anchor.userData as MaterialSlot))
-                        anchorsToRemove.Add(anchor);
+                var anchorsToRemove = inputContainer.Children().ToList();
                 foreach (var anchorElement in anchorsToRemove)
                 {
                     inputContainer.Remove(anchorElement);
                     }
                 }
 
-                anchorsToRemove.Clear();
-                foreach (var anchor in outputContainer.Children())
-                    if (!slots.Contains(anchor.userData as MaterialSlot))
-                        anchorsToRemove.Add(anchor);
+                anchorsToRemove = outputContainer.Children().ToList();
                 foreach (var ve in anchorsToRemove)
                     outputContainer.Remove(ve);
 
                     port.portName = slot.displayName;
                 }
 
-                AddSlots(slots.Except(inputContainer.Children().Concat(outputContainer.Children()).Select(data => data.userData as MaterialSlot)));
+                AddSlots(slots);
 
                 if (inputContainer.childCount > 0)
                     inputContainer.Sort((x, y) => slots.IndexOf(x.userData as MaterialSlot) - slots.IndexOf(y.userData as MaterialSlot));

MaterialGraphProject/Assets/UnityShaderEditor/Editor/SerializableGraph/Implementation/SerializableNode.cs

             }
         }
 
-        public void RemoveSlotsNameNotMatching(IEnumerable<int> slotIds)
+        public void RemoveSlotsNameNotMatching(IEnumerable<int> slotIds, bool supressWarnings = false)
-                Debug.LogWarningFormat("Removing Invalid MaterialSlot: {0}", invalidSlot);
+                if (!supressWarnings)
+                    Debug.LogWarningFormat("Removing Invalid MaterialSlot: {0}", invalidSlot);
                 RemoveSlot(invalidSlot);
             }
         }

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

+namespace UnityEditor.ShaderGraph
+{
+    public interface IMaterialSlotHasValue<T>
+    {
+        T defaultValue { get; }
+        T value { get; }
+    }
+}

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

-namespace UnityEditor.ShaderGraph
-{
-    public interface IMaterialSlotHasVaule<T>
-    {
-        T defaultValue { get; }
-        T value { get; }
-    }
-}