/// <summary>
/// 获取非托管数组的最后一个元素的地址再向后一个单位的地址。
/// </summary>
/// <param name="array"></param>
/// <returns></returns>
public static unsafe void *TailAddress(this UnmanagedArrayBase array)
{
void *tail = (array.Header + array.ByteLength).ToPointer();
return(tail);
}
/// <summary>
/// 获取非托管数组的最后一个元素的地址。
/// </summary>
/// <param name="array"></param>
/// <returns></returns>
public static unsafe void *LastElement(this UnmanagedArrayBase array)
{
void *last = (array.Header + (array.ByteLength - array.ByteLength / array.Length)).ToPointer();
return(last);
}
//[MethodImpl(MethodImplOptions.Synchronized)]//这造成死锁，不知道是为什么
private static void Add(UnmanagedArrayBase array)
{
allocatedArrays.Add(array);
}
///// <summary>
///// 错误 1 无法获取托管类型(“T”)的地址和大小，或无法声明指向它的指针 C:\Users\威\Documents\GitHub\CSharpGL\Utilities\UnmanagedArrayHelper.cs 16 33 Utilities
///// </summary>
///// <typeparam name="T"></typeparam>
///// <param name="array"></param>
///// <returns></returns>
//public static unsafe T* FirstElement<T>(this UnmanagedArray<T> array) where T : struct
//{
// var header = (void*)array.Header;
// return (T*)header;
//}
/// <summary>
/// 获取非托管数组的第一个元素的地址。
/// </summary>
/// <param name="array"></param>
/// <returns></returns>
public static unsafe void *FirstElement(this UnmanagedArrayBase array)
{
void *header = array.Header.ToPointer();
return(header);
}
/// <summary>
/// 把此非托管数组复制到目标内存地址上。
/// </summary>
/// <param name="source"></param>
/// <param name="destination">例如用glMapBuffer()得到的地址。</param>
public static void CopyTo(this UnmanagedArrayBase source, IntPtr destination)
{
CopyMemory(destination, source.Header, (uint)source.ByteLength);
}