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Packages/com.unity.xr.openxr/Samples~/CustomCompositionLayerFeature/CustomFeature.cs

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+#if XR_COMPOSITION_LAYERS
+using System.Runtime.CompilerServices;
+using Unity.XR.CompositionLayers.Layers;
+using UnityEditor;
+using UnityEngine.XR.OpenXR.CompositionLayers;
+using UnityEngine.XR.OpenXR.Features;
+
+#if UNITY_EDITOR
+[UnityEditor.XR.OpenXR.Features.OpenXRFeature(UiName = "OpenXR Custom Layer Handler Example",
+    BuildTargetGroups = new[] { BuildTargetGroup.Standalone, BuildTargetGroup.WSA, BuildTargetGroup.Android },
+    Company = "Unity",
+    Desc = "An example to demonstrate how to enable a handler for a customized composition layer type.",
+    DocumentationLink = "",
+    FeatureId = "com.unity.openxr.features.customlayerexample",
+    OpenxrExtensionStrings = "",
+    Version = "1")]
+#endif
+public class CustomFeature : OpenXRFeature
+{
+    bool isSubscribed;
+
+    protected override void OnEnable()
+    {
+        if (OpenXRLayerProvider.isStarted)
+            CreateAndRegisterLayerHandler();
+        else
+        {
+            OpenXRLayerProvider.Started += CreateAndRegisterLayerHandler;
+            isSubscribed = true;
+        }
+    }
+
+    protected override void OnDisable()
+    {
+        if (isSubscribed)
+        {
+            OpenXRLayerProvider.Started -= CreateAndRegisterLayerHandler;
+            isSubscribed = false;
+        }
+    }
+
+    protected void CreateAndRegisterLayerHandler()
+    {
+        if (enabled)
+        {
+            var layerHandler = new CustomLayerHandler();
+            OpenXRLayerProvider.RegisterLayerHandler(typeof(CustomQuadLayerData), layerHandler);
+        }
+    }
+}
+#endif