Merge pull request #316 from Unity-Technologies/fix-for-decimal-issue

Fix for issues regarding decimals / periods

com.unity.shadergraph/Editor/Data/Graphs/DynamicVectorMaterialSlot.cs

             if (channelCount == 1)
                 return values;
             for (var i = 1; i < channelCount; i++)
-                values += ", " + value[i];
+                values += ", " + NodeUtils.FloatToShaderValue(value[i]);
             return string.Format("{0}{1}({2})", precision, channelCount, values);
         }
 

com.unity.shadergraph/Editor/Data/Implementation/NodeUtils.cs

                 return "NAN";
             else
             {
-                decimal amount;
-                if( decimal.TryParse(value.ToString(), NumberStyles.Any, CultureInfo.InvariantCulture, out amount) )
-                    return amount.ToString();
-                else
-                    return value.ToString();
+                 return value.ToString(CultureInfo.InvariantCulture);
             }
         }
     }