Unity：只能从主线程调用GetGraphicsFormat_Native_TextureFormat

Question

我开发了一个基于.NET 4.7的统一插件，并希望通过事件发送图像。到目前为止，该方法有效。 但是，从插件库的另一个线程触发此事件时，出现错误：

GetGraphicsFormat_Native_TextureFormat can only be called from the main thread.

如何解决此问题？我的代码：

// .NET PLUGIN
public delegate void StreamHandler(MemoryStream stream);
public event StreamHandler stream;

public  void helloWorld()
{
        thread = new Thread(dowork);
        bm = new Bitmap("c://tests//3by2.jpg");
        bm2 = new Bitmap("c://tests//ar-05.jpg");
        memoryStream = new MemoryStream();
        memoryStream2 = new MemoryStream();
        bm.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Jpeg);
        bm2.Save(memoryStream2, System.Drawing.Imaging.ImageFormat.Jpeg);
        thread.Start();
}

private void dowork()
{
    for (int i = 0; i < 10; i++)
    {
        this.stream(memoryStream);
        System.Threading.Thread.Sleep(100);
        this.stream(memoryStream2);
        System.Threading.Thread.Sleep(100);
    }
}


// Unity ---------------------------------------
Class1 class1 = new Class1();
class1.Log += new Class1.LogHandler(Logger);
class1.stream += new Class1.StreamHandler(streamhandle);
class1.helloWorld();

void streamhandle(MemoryStream ms)
{
     Texture2D texture = new Texture2D(128, 128);
     texture.LoadImage(ms.ToArray());
     m_RawImage= RawImage.FindObjectOfType<RawImage>();
     m_RawImage.texture = texture; 
}