unity3d使用3D WebView播放网页中的视频

Unity2021.3.35f1，硬件ESP32-Cam，3D WebView插件

1.新建工程，导入3D WebView for Winfows和3D WebView for Android

2.打开场景Assets\Vuplex\WebView\Demos\Scenes\2_CanvasWebViewDemo

3.修改Canvas的Render Mode为Screen Space-Camera，修改Canvas Scaler

4.修改CanvasWebViewPrefab的组件RectTransform的对齐方式和宽高，宽高与分辨率相同

5.修改CanvasWebViewPrefab中的网址，Resolution改为1(实为缩放)

6.运行程序即可看到视频

7.导入OpenCV for Unity 2.5.9

8.创建Scripts文件夹，再创建Test.cs，打开编辑代码

using OpenCVForUnity.CoreModule; using OpenCVForUnity.ImgprocModule; using OpenCVForUnity.UnityUtils; using UnityEngine; using UnityEngine.UI; using Vuplex.WebView; using Vuplex.WebView.Internal;  public class Test : MonoBehaviour {     public RawImage rawImage;     public CanvasWebViewPrefab view;     public CanvasViewportMaterialView vp;      Texture2D texture;     Texture2D texture1;     RenderTexture _tmpRenderTexture;      bool init = false;     // Start is called before the first frame update     void Start()     {  #if UNITY_ANDROID         view.OnNewTextureHandle += OnRenderTex; #endif     }      void OnRenderTex(EventArgs<Texture2D> eventArgs)     {         Draw(eventArgs.Value);     }      private void Update()     { #if UNITY_STANDALONE_WIN || UNITY_EDITOR         Texture2D tx = vp.Texture as Texture2D;         Draw(tx); #endif     }      void Draw(Texture2D tx)     {         if (tx == null)         {             return;         }         if (!init)         {             texture = new Texture2D(tx.width, tx.height, TextureFormat.ARGB32, false);             texture1 = new Texture2D(tx.width, tx.height, TextureFormat.ARGB32, false);              init = true;         }          Mat cameraMat = new Mat(tx.height, tx.width, CvType.CV_8UC4);          Point pt = new Point(tx.width / 2, tx.height / 2);          Utils.textureToTexture2D(tx, texture);         Utils.texture2DToMat(texture, cameraMat);         Imgproc.circle(cameraMat, pt, 30, new Scalar(255, 0, 0), 3);         Utils.matToTexture2D(cameraMat, texture1);         rawImage.texture = texture1;     }  } 

9.创建实体Test，添加Test组件，并给变量赋值

10.运行程序，可以在RawImage中看到一个圆圈。

至此Windows环境已适配完成。

下面开始适配安卓版

11.去掉勾选CanvasWebViewPrefab组件中的Native 2D Mode (Android, iOS, WebGL, and UWP only)

12.将平台切换到Android，在Player Setting...中Graphics APIS 添加Vulkan

13.打开Assets\Vuplex\WebView\Core\Scripts\BaseWebViewPrefab.cs添加如下代码

        public delegate void OnNewTexture(EventArgs<Texture2D> eventArgs);         public OnNewTexture OnNewTextureHandle;

if (OnNewTextureHandle != null) {    OnNewTextureHandle(eventArgs); }

13.发布apk，在手机上运行，即可看到与PC相同的效果