Unity中指定相机截屏，并将图片转为Base64

 1 /// <summary>
 2         /// 指定相机截屏
 3         /// </summary>
 4         /// <param name="camera"></param>
 5         /// <param name="rect"></param>
 6         /// <returns></returns>
 7         public byte[] CaptureScreen(Camera camera, Rect rect)
 8         {
 9             RenderTexture rt = new RenderTexture(camera.pixelWidth, camera.pixelHeight, 0);
10 
11             camera.targetTexture = rt;
12             camera.Render();
13 
14             RenderTexture.active = rt;
15             Texture2D screenShot = new Texture2D(camera.pixelWidth, camera.pixelHeight, TextureFormat.RGBA32, false);
16 
17             screenShot.ReadPixels(rect, 0, 0);
18             screenShot.Apply();
19 
20             camera.targetTexture = null;
21             RenderTexture.active = null;
22             GameObject.Destroy(rt);
23 
24             byte[] bytes = screenShot.EncodeToPNG();
25 
26             return bytes;
27         }

 1  /// <summary>
 2         /// 图片流转Base64
 3         /// </summary>
 4         /// <param name="bytesArr"></param>
 5         /// <returns></returns>
 6         public String Texture2DToBase64(byte[] bytesArr)
 7         {
 8             string strbaser64 = Convert.ToBase64String(bytesArr);
 9 
10             return strbaser64;
11         }