remove unnecessary nesting from render pipeline settings

Assets/Portal/Runtime/RenderPortals.cs

@@ -1,4 +1,3 @@
-using System;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Rendering;
@@ -12,11 +11,11 @@ namespace EscapeRoomEngine.Portal.Runtime
         {
             private RenderStateBlock _renderStateBlock;
 
-            private readonly Settings _settings;
+            private readonly LayerMask _layers;
 
-            public PortalRenderPass(Settings settings)
+            public PortalRenderPass(LayerMask layers)
             {
-                _settings = settings;
+                _layers = layers;
                 
                 renderPassEvent = RenderPassEvent.AfterRenderingOpaques;
                 _renderStateBlock = new RenderStateBlock(RenderStateMask.Nothing);
@@ -33,24 +32,18 @@ namespace EscapeRoomEngine.Portal.Runtime
                         },
                         ref renderingData, sortingCriteria);
 
-                var filteringSettings = new FilteringSettings(RenderQueueRange.opaque, _settings.layer);
+                var filteringSettings = new FilteringSettings(RenderQueueRange.opaque, _layers);
                 context.DrawRenderers(renderingData.cullResults, ref drawingSettings, ref filteringSettings, ref _renderStateBlock);
             }
         }
 
         private PortalRenderPass _portalPass;
 
-        [Serializable]
-        public class Settings
-        {
-            public LayerMask layer;
-        }
-
-        public Settings settings = new();
+        public LayerMask layers;
 
         public override void Create()
         {
-            _portalPass = new PortalRenderPass(settings);
+            _portalPass = new PortalRenderPass(layers);
         }
 
         public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)