问Xna:模拟Texture2D

EN

internal class SneakyTexture2D : Texture2D
{
    private static readonly object Lockobj = new object();
    private static volatile Texture2D instance;

    private SneakyTexture2D()
        : this(() => throw new Exception())
    {
    }

    private SneakyTexture2D(Func<GraphicsDevice> func)
        : this(func())
    {
    }

    // Is never called
    private SneakyTexture2D(GraphicsDevice g)
        : base(g, 0, 0)
    {
    }

    // INTENTIONAL MEMORY LEAK AHOY!!!
    ~SneakyTexture2D()
    {
        instance = this;
    }


    // This is the actual "constructor"
    public static Texture2D CreateNamed(string name)
    {
        lock (Lockobj)
        {
            Texture2D local;
            instance = null;
            while ((local = instance) == null)
            {
                GC.Collect();
                GC.WaitForPendingFinalizers();

                GC.WaitForFullGCComplete();
                try
                {
                    DoNotUseMe = new SneakyTexture2D();
                }
                catch
                {
                }
            }

            local.Name = name;
            return local;
        }
    }
}