version 2.3.0

com.htc.upm.vive.openxr/Runtime/Toolkits/PlaneDetection/Scripts/MemoryTools.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace VIVE.OpenXR
+{
+	public class MemoryTools
+	{
+		public static IntPtr ToIntPtr<T>(T[] array) where T : Enum
+		{
+			int size = Marshal.SizeOf(typeof(T)) * array.Length;
+			IntPtr ptr = Marshal.AllocHGlobal(size);
+			int[] intArray = new int[array.Length];
+			for (int i = 0; i < array.Length; i++)
+				intArray[i] = (int)(object)array[i];
+			Marshal.Copy(intArray, 0, ptr, array.Length);
+			return ptr;
+		}
+
+		// Make the same size raw buffer from input array.
+		public static IntPtr MakeRawMemory<T>(T[] refArray)
+		{
+			int size = Marshal.SizeOf(typeof(T)) * refArray.Length;
+			return Marshal.AllocHGlobal(size);
+		}
+
+		// Make the same size raw buffer from input array.
+		public static void CopyFromRawMemory<T>(T[] array, IntPtr raw)
+		{
+			int step = Marshal.SizeOf(typeof(T));
+			for (int i = 0; i < array.Length; i++)
+			{
+				array[i] = Marshal.PtrToStructure<T>(IntPtr.Add(raw, i * step));
+			}
+		}
+
+		// Make the same size raw buffer from input array.  Make sure the raw has enough size.
+		public static void CopyToRawMemory<T>(IntPtr raw, T[] array)
+		{
+			int step = Marshal.SizeOf(typeof(T));
+			for (int i = 0; i < array.Length; i++)
+			{
+				Marshal.StructureToPtr<T>(array[i], IntPtr.Add(raw, i * step), false);
+			}
+		}
+
+		public static void ReleaseRawMemory(IntPtr ptr)
+		{
+			Marshal.FreeHGlobal(ptr);
+		}
+	}
+}