version 2.5.0

com.htc.upm.vive.openxr/Runtime/Common/IViveFeatureWrapper.cs

@@ -0,0 +1,38 @@
+// Copyright HTC Corporation All Rights Reserved.
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace VIVE.OpenXR.Feature
+{
+    public interface IViveFeatureWrapper
+    {
+        public bool OnInstanceCreate(XrInstance xrInstance, IntPtr xrGetInstanceProcAddr);
+
+        public void OnInstanceDestroy();
+    }
+
+    public class ViveFeatureWrapperBase<T> where T : ViveFeatureWrapperBase<T>, new()
+    {
+        private static readonly Lazy<T> lazyInstance = new Lazy<T>(() => new T());
+
+        public static T Instance => lazyInstance.Value;
+
+        // Set true in yourfeature's OnInstanceCreate
+        public bool IsInited { get; protected set; } = false;
+
+        public OpenXRHelper.xrGetInstanceProcAddrDelegate xrGetInstanceProcAddr;
+
+        /// <summary>
+        /// Complete the xrGetInstanceProcAddr by set the pointer received in OnInstanceCreate
+        /// </summary>
+        /// <param name="intPtr"></param>
+        public void SetGetInstanceProcAddrPtr(IntPtr intPtr)
+        {
+            if (intPtr == null || intPtr == IntPtr.Zero)
+                throw new Exception("xrGetInstanceProcAddr is null");
+
+            xrGetInstanceProcAddr = Marshal.GetDelegateForFunctionPointer<OpenXRHelper.xrGetInstanceProcAddrDelegate>(intPtr);
+        }
+    }
+}