diff --git a/Packages/src/Runtime/Internal/Utilities/ShaderVariantRegistry.cs b/Packages/src/Runtime/Internal/Utilities/ShaderVariantRegistry.cs
index 1a20dde..c43e091 100644
--- a/Packages/src/Runtime/Internal/Utilities/ShaderVariantRegistry.cs
+++ b/Packages/src/Runtime/Internal/Utilities/ShaderVariantRegistry.cs
@@ -61,7 +61,10 @@ public override int GetHashCode()
 
         public ShaderVariantCollection shaderVariantCollection => m_Asset;
 
-        public Shader FindOptionalShader(Shader shader, string format, string defaultOptionalShaderName)
+        public Shader FindOptionalShader(Shader shader,
+            string requiredName,
+            string format,
+            string defaultOptionalShaderName)
         {
             if (!shader) return null;
 
@@ -72,6 +75,13 @@ public Shader FindOptionalShader(Shader shader, string format, string defaultOpt
                 return Shader.Find(optionalShaderName);
             }
 
+            // Required shader.
+            if (shader.name.Contains(requiredName))
+            {
+                _cachedOptionalShaders[id] = shader.name;
+                return shader;
+            }
+
             // Find optional shader.
             Shader optionalShader;
             var shaderName = shader.name;
@@ -116,7 +126,8 @@ public void InitializeIfNeeded(Object owner, string optionalName)
                     {
                         return File.ReadLines(x.path)
                             .Take(10)
-                            .Select(line => Regex.Match(line, @"//\s*OptionalShaderFor:\s*(.*)$"))
+                            .Where(line => line.Contains($"OptionalShader@{optionalName}"))
+                            .Select(line => Regex.Match(line, @":\s*(.*)$"))
                             .Where(match => match.Success)
                             .Select(match => new StringPair() { key = match.Groups[1].Value, value = x.name });
                     })
@@ -375,12 +386,12 @@ private static bool DrawRegisteredShaderVariants(bool expand, SerializedProperty
             return expand;
         }
 
-        private static void ShowShaderDropdown(SerializedProperty property, string option, bool included)
+        private static void ShowShaderDropdown(SerializedProperty property, string option, bool required)
         {
             var menu = new GenericMenu();
             var current = property.stringValue;
             var allShaderNames = ShaderUtil.GetAllShaderInfo()
-                .Where(s => s.name.Contains(option) == included)
+                .Where(s => !required || s.name.Contains(option))
                 .Select(s => s.name);
 
             foreach (var shaderName in allShaderNames)
diff --git a/Packages/src/Runtime/Utilities/SoftMaskUtils.cs b/Packages/src/Runtime/Utilities/SoftMaskUtils.cs
index 208e69b..8b32676 100644
--- a/Packages/src/Runtime/Utilities/SoftMaskUtils.cs
+++ b/Packages/src/Runtime/Utilities/SoftMaskUtils.cs
@@ -191,7 +191,9 @@ public static Material CreateSoftMaskable(
             var mat = new Material(baseMat)
             {
                 shader = UISoftMaskProjectSettings.shaderRegistry.FindOptionalShader(baseMat.shader,
-                    "Hidden/{0} (SoftMaskable)", "Hidden/UI/Default (SoftMaskable)"),
+                    "(SoftMaskable)",
+                    "Hidden/{0} (SoftMaskable)",
+                    "Hidden/UI/Default (SoftMaskable)"),
                 hideFlags = HideFlags.HideAndDontSave
             };
             Profiler.EndSample();