95 lines
2.3 KiB
C#
95 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Runtime.Versioning;
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using System.Security.AccessControl;
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using System.Text;
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using System.Threading.Tasks;
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namespace System
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{
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/// <summary>
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/// A handle to an OpenGL object.
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/// </summary>
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public unsafe class glHandle
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{
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private readonly uint[] _value;
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internal int length;
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internal uint* handle;
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public uint this[int index]
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{
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get
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{
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if (index > length)
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{
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throw new IndexOutOfRangeException();
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}
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return *(handle + index);
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}
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set
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{
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if (index > length)
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{
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throw new IndexOutOfRangeException();
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}
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*(handle + index) = value;
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}
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}
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public glHandle(int count)
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{
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_value = new uint[count];
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length = count;
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handle = (uint*)GCHandle.Alloc(_value, GCHandleType.Pinned).AddrOfPinnedObject();
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}
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internal glHandle(uint[] val)
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{
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_value = val;
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length = val.Length;
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handle = (uint*)GCHandle.Alloc(_value, GCHandleType.Pinned).AddrOfPinnedObject();
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}
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internal glHandle(uint val)
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{
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_value = [val];
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length = 1;
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handle = (uint*)GCHandle.Alloc(_value, GCHandleType.Pinned).AddrOfPinnedObject();
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}
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public void Free()
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{
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if (_value == null)
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{
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return;
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}
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GCHandle h = GCHandle.FromIntPtr((IntPtr)handle);
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h.Free();
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}
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/// <summary>
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/// Realse all resource in this handle.
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/// This will release all resource in this <see cref="glHandle"/>.
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/// This <see langword="glHandle"/> will be not usable.
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/// </summary>
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public void Release()
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{
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if (_value == null)
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{
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return;
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}
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else
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{
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GCHandle.FromIntPtr((IntPtr)handle).Free();
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handle = (uint*)IntPtr.Zero;
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}
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}
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}
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}
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