[FIX] #159 Added a utility node method for converting float to shader value. To catch Infinity text string.

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

         protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
         {
             var channelCount = SlotValueHelper.GetChannelCount(concreteValueType);
-            var values = value.x.ToString();
+            string values = NodeUtils.FloatToShaderValue(value.x);
             if (channelCount == 1)
                 return values;
             for (var i = 1; i < channelCount; i++)

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

 
         protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
         {
-            return value.ToString();
+            return NodeUtils.FloatToShaderValue(value);
         }
 
         public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)

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

 
         protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
         {
-            return precision + "2 (" + value.x + "," + value.y + ")";
+            return precision + "2 (" + NodeUtils.FloatToShaderValue(value.x) + "," + NodeUtils.FloatToShaderValue(value.y) + ")";
         }
 
         public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)

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

 
         protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
         {
-            return precision + "3 (" + value.x + "," + value.y + "," + value.z + ")";
+            return precision + "3 (" + NodeUtils.FloatToShaderValue(value.x) + "," + NodeUtils.FloatToShaderValue(value.y) + "," + NodeUtils.FloatToShaderValue(value.z) + ")";
         }
 
         public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)

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

 
         protected override string ConcreteSlotValueAsVariable(AbstractMaterialNode.OutputPrecision precision)
         {
-            return precision + "4 (" + value.x + "," + value.y + "," + value.z + "," + value.w + ")";
+            return precision + "4 (" + NodeUtils.FloatToShaderValue(value.x) + "," + NodeUtils.FloatToShaderValue(value.y) + "," + NodeUtils.FloatToShaderValue(value.z) + "," + NodeUtils.FloatToShaderValue(value.w) + ")";
         }
 
         public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Implementation/NodeUtils.cs

 using System.Collections.Generic;
 using System.Linq;
 using UnityEditor.ShaderGraph;
+using UnityEngine;
 
 namespace UnityEditor.Graphing
 {
 
             var toPrint = missingSlots.Select(x => x.ToString());
 
-            throw new SlotConfigurationException(string.Format("Missing slots {0} on node {1}", string.Join(", ", toPrint.ToArray()), node));
+            throw new SlotConfigurationException(String.Format("Missing slots {0} on node {1}", String.Join(", ", toPrint.ToArray()), node));
         }
 
         public static IEnumerable<IEdge> GetAllEdges(INode node)
             char[] arr = input.ToCharArray();
             arr = Array.FindAll<char>(arr, (c => (Char.IsLetterOrDigit(c))));
             return new string(arr);
+        }
+
+        public static string FloatToShaderValue(float value)
+        {
+            if (Single.IsPositiveInfinity(value))
+                return "1.#INF";
+            else if (Single.IsNegativeInfinity(value))
+                return "-1.#INF";
+            else if (Single.IsNaN(value))
+                return "NAN";
+            else
+                return value.ToString();
         }
     }
 }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Basic/Vector1Node.cs

             if (generationMode.IsPreview())
                 return;
 
-            visitor.AddShaderChunk(precision + " " + GetVariableNameForNode() + " = " + m_Value + ";", true);
+            visitor.AddShaderChunk(precision + " " + GetVariableNameForNode() + " = " + NodeUtils.FloatToShaderValue(m_Value) + ";", true);
         }
 
         public override string GetVariableNameForSlot(int slotId)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Basic/Vector2Node.cs

             if (generationMode.IsPreview())
                 return;
 
-            visitor.AddShaderChunk(precision + "2 " + GetVariableNameForNode() + " = " + precision + "2" + m_Value + ";", true);
+            visitor.AddShaderChunk(string.Format("{0}2 {1} = {0}2({2},{3});", precision, GetVariableNameForNode(), NodeUtils.FloatToShaderValue(m_Value.x), NodeUtils.FloatToShaderValue(m_Value.y)), true);
         }
 
         public override string GetVariableNameForSlot(int slotId)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Basic/Vector3Node.cs

             if (generationMode.IsPreview())
                 return;
 
-            visitor.AddShaderChunk(precision + "3 " + GetVariableNameForNode() + " = " + precision + "3" + m_Value + ";", true);
+            var s = string.Format("{0}3 {1} = {0}3({2},{3},{4});",
+                precision,
+                GetVariableNameForNode(),
+                NodeUtils.FloatToShaderValue(m_Value.x),
+                NodeUtils.FloatToShaderValue(m_Value.y),
+                NodeUtils.FloatToShaderValue(m_Value.z));
+            visitor.AddShaderChunk(s, true);
         }
 
         public override string GetVariableNameForSlot(int slotId)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Basic/Vector4Node.cs

             if (generationMode.IsPreview())
                 return;
 
-            visitor.AddShaderChunk(precision + "4 " + GetVariableNameForNode() + " = " + precision + "4" + m_Value + ";", true);
+            var s = string.Format("{0}4 {1} = {0}4({2},{3},{4},{5});",
+                precision,
+                GetVariableNameForNode(),
+                NodeUtils.FloatToShaderValue(m_Value.x),
+                NodeUtils.FloatToShaderValue(m_Value.y),
+                NodeUtils.FloatToShaderValue(m_Value.z),
+                NodeUtils.FloatToShaderValue(m_Value.w));
+            visitor.AddShaderChunk(s, true);
         }
 
         public override string GetVariableNameForSlot(int slotId)