Updated GenerateMask helper

Editor/AssetsHelpers/Helpers/CaseInsensitiveEqualityComparer.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+
+namespace Misaki.ArtToolEditor
+{
+    internal class CaseInsensitiveEqualityComparer : IEqualityComparer<string>
+    {
+        private static CaseInsensitiveEqualityComparer _default;
+        public static CaseInsensitiveEqualityComparer Default = _default ?? new CaseInsensitiveEqualityComparer();
+
+        public bool Equals(string x, string y)
+        {
+            return string.Equals(x, y, StringComparison.OrdinalIgnoreCase);
+        }
+
+        public int GetHashCode(string obj)
+        {
+            return obj.ToLowerInvariant().GetHashCode();
+        }
+    }
+}

Editor/AssetsHelpers/Helpers/CaseInsensitiveEqualityComparer.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 9936a64e41c0ed842b8e241684b1d002

Editor/AssetsHelpers/Helpers/TextureHelpers.cs

@@ -14,7 +14,7 @@ namespace Misaki.ArtToolEditor
             var bytes = exportTexture.EncodeToPNG();
             File.WriteAllBytes(textureFullPath, bytes);
 
-            UnityEngine.Object.DestroyImmediate(exportTexture);
+            Object.DestroyImmediate(exportTexture);
         }
     }
-}
+}