Unity 发送游戏画面到 Winform

一、首先看一下Unity界面：

设了2个摄像机，位置重叠，旋转相同，父子关系，在父摄像机上加上脚本A.cs，并将子摄像机复制给A脚本中的变量Cam；

Cam用于为RenderTexture提供画面，Port是Socket监听的端口;

二、A.cs脚本代码（夜太深，改天再补充注释，直接贴代码）

using System;

using System.Collections;

using System.Collections.Generic;

using System.Net;

using System.Net.Sockets;

using System.Threading;

using UnityEngine;

public class A : MonoBehaviour

{

    public Camera cam;

    public int port = ;

    RenderTexture cameraView = null;

    Socket socket = null;

    Thread thread = null;

    bool success = true;

    /// <summary>

    /// 客户端列表

    /// </summary>

    Dictionary<string, Client> clients = new Dictionary<string, Client>();

    Vector3 old_position;//旧位置

    Quaternion old_rotation;//旧旋转

    void Start()

    {

        cameraView = new RenderTexture(Screen.width, Screen.height, );

        cameraView.enableRandomWrite = true;

        cam.targetTexture = cameraView;

        old_position = transform.position;

        old_rotation = transform.rotation;

        socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

        socket.Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"), port));

        socket.Listen();

        thread = new Thread(new ThreadStart(Accept));

        thread.Start();

    }

    int isNewAdd = ;

    void Accept()

    {

        while (thread.ThreadState == ThreadState.Running)

        {

            Socket _socket = socket.Accept();

            if (clients.ContainsKey(_socket.RemoteEndPoint.ToString()))

            {

                try

                {

                    clients[_socket.RemoteEndPoint.ToString()].socket.Shutdown(SocketShutdown.Both);

                }

                catch { }

                clients.Remove(_socket.RemoteEndPoint.ToString());

            }

            Client client = new Client

            {

                socket = _socket

            };

            clients.Add(_socket.RemoteEndPoint.ToString(), client);

            isNewAdd = ;

            Debug.LogError("连接……");

        }

    }

    void Update()

    {

        if (success && clients.Count > )

        {

            success = false;

            SendTexture();

        }

        if (isNewAdd > )

        {

            isNewAdd = ;

            SendTexture();

        }

    }

    void OnGUI()

    {

        GUI.DrawTexture(new Rect(, , , ), cameraView, ScaleMode.StretchToFill);

    }

    void OnApplicationQuit()

    {

        try

        {

            socket.Shutdown(SocketShutdown.Both);

        }

        catch { }

        try

        {

            thread.Abort();

        }

        catch { }

    }

    Texture2D screenShot = null;

    int gc_count = ;

    void SendTexture(int isInit = )

    {

        if ((!old_position.Equals(transform.position) || !old_rotation.Equals(transform.rotation)) || isInit == )

        {

            if (null == screenShot)

                screenShot = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);

            RenderTexture.active = cameraView;

            screenShot.ReadPixels(new Rect(, , cameraView.width, cameraView.height), , );

            RenderTexture.active = null;

            byte[] bytes = screenShot.EncodeToJPG();

            foreach (var val in clients.Values)

            {

                try

                {

                    val.socket.Send(bytes);

                }

                catch

                {

                    if (!val.socket.Connected)

                        clients.Remove(val.socket.RemoteEndPoint.ToString());

                    break;

                }

            }

            gc_count++;

            if (gc_count > )

            {

                gc_count = ;

                GC.Collect();

            }

            Debug.Log("发送数据：" + (float)bytes.Length / 1024f + "KB");

            old_position = transform.position;

            old_rotation = transform.rotation;

        }

        success = true;

    }

}

class Client

{

    public Socket socket = null;

}

三、Winform端

直接拖了个PictureBox放到窗口上，停靠父窗体；

四、Winform代码

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Net;

using System.Net.Sockets;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace TransformViewClient

{

    public partial class Form1 : Form

    {

        bool isOver = false;

        Socket socket = null;

        Thread thread = null;

        byte[] buffer = null;

        bool receState = true;

        int readTimes = ;

        public Form1()

        {

            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            Control.CheckForIllegalCrossThreadCalls = true;

            buffer = new byte[ *  * ];

            socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            socket.Connect(IPAddress.Parse("127.0.0.1"), );

            thread = new Thread(new ThreadStart(Receive));

            thread.Start();

        }

        void Receive()

        {

            while (thread.ThreadState == ThreadState.Running && socket.Connected)

            {

                int count = socket.Receive(buffer);

                if (receState && count > )

                {

                    receState = false;

                    BytesToImage(count, buffer);

                }

            }

        }

        MemoryStream ms = null;

        public void BytesToImage(int count,byte[] bytes)

        {

            try

            {

                ms = new MemoryStream(bytes, , count);

                pictureBox1.Image = Image.FromStream(ms);

                readTimes++;

                if (readTimes > )

                {

                    readTimes = ;

                    GC.Collect();

                }

            }

            catch

            {

            }

            receState = true;

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)

        {

            try

            {

                socket.Shutdown(SocketShutdown.Both);

            }

            catch { }

            try

            {

                thread.Abort();

            }

            catch { }

        }

    }

}

程序里或许有许多bug和缺陷，希望高手指点！