diff --git a/Assets/Prefab/LeftMessageEntry.prefab b/Assets/Prefab/LeftMessageEntry.prefab
index ce79a81..8971168 100644
--- a/Assets/Prefab/LeftMessageEntry.prefab
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diff --git a/Assets/Prefab/RightMessageEntry.prefab b/Assets/Prefab/RightMessageEntry.prefab
index 65d9b2b..d06b9d7 100644
--- a/Assets/Prefab/RightMessageEntry.prefab
+++ b/Assets/Prefab/RightMessageEntry.prefab
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diff --git a/Assets/Resources/ContactEntry.prefab b/Assets/Resources/ContactEntry.prefab
index c0d9eba..d02877b 100644
--- a/Assets/Resources/ContactEntry.prefab
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diff --git a/Assets/Resources/MainPanel.prefab b/Assets/Resources/MainPanel.prefab
index 4feee82..07e8b9b 100644
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diff --git a/Assets/Resources/ParticipantEntry.prefab b/Assets/Resources/ParticipantEntry.prefab
index 256468d..be30292 100644
--- a/Assets/Resources/ParticipantEntry.prefab
+++ b/Assets/Resources/ParticipantEntry.prefab
@@ -1,5 +1,81 @@
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@@ -86,6 +162,7 @@ GameObject:
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@@ -105,6 +182,7 @@ RectTransform:
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@@ -151,6 +229,98 @@ MonoBehaviour:
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diff --git a/Assets/Resources/avatar.prefab b/Assets/Resources/avatar.prefab
index 6a3aa99..c7f687b 100644
--- a/Assets/Resources/avatar.prefab
+++ b/Assets/Resources/avatar.prefab
@@ -65,7 +65,7 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-  m_Sprite: {fileID: 21300000, guid: d9625485d797b394986a962fa70dc17b, type: 3}
+  m_Sprite: {fileID: 0}
   m_Type: 0
   m_PreserveAspect: 0
   m_FillCenter: 1
diff --git a/Assets/Scenes/SampleScene.unity b/Assets/Scenes/SampleScene.unity
index 738c119..416bd14 100644
--- a/Assets/Scenes/SampleScene.unity
+++ b/Assets/Scenes/SampleScene.unity
@@ -5712,22 +5712,12 @@ PrefabInstance:
       propertyPath: m_AnchoredPosition.y
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 765493694211344253, guid: 11ac2a591441d5940b0b146f6dd3025e,
-        type: 3}
-      propertyPath: m_SizeDelta.y
-      value: 0
-      objectReference: {fileID: 0}
     - target: {fileID: 979448543686126123, guid: 11ac2a591441d5940b0b146f6dd3025e,
         type: 3}
       propertyPath: m_Name
       value: MainPanel
       objectReference: {fileID: 0}
-    - target: {fileID: 1201540108501141588, guid: 11ac2a591441d5940b0b146f6dd3025e,
-        type: 3}
-      propertyPath: m_SizeDelta.y
-      value: 0
-      objectReference: {fileID: 0}
-    - target: {fileID: 1875627317724447898, guid: 11ac2a591441d5940b0b146f6dd3025e,
+    - target: {fileID: 979448543686126123, guid: 11ac2a591441d5940b0b146f6dd3025e,
         type: 3}
       propertyPath: m_IsActive
       value: 1
@@ -5762,21 +5752,6 @@ PrefabInstance:
       propertyPath: m_AnchoredPosition.y
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 2977466294533182884, guid: 11ac2a591441d5940b0b146f6dd3025e,
-        type: 3}
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-      value: 1
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-    - target: {fileID: 2977466294533182884, guid: 11ac2a591441d5940b0b146f6dd3025e,
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-      propertyPath: m_Color.r
-      value: 1
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     - target: {fileID: 3608820285885576044, guid: 11ac2a591441d5940b0b146f6dd3025e,
         type: 3}
       propertyPath: m_Pivot.x
@@ -5877,11 +5852,6 @@ PrefabInstance:
       propertyPath: m_LocalEulerAnglesHint.z
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 4432216805467735932, guid: 11ac2a591441d5940b0b146f6dd3025e,
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-      value: 0
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         type: 3}
       propertyPath: m_AnchorMax.y
@@ -5912,16 +5882,6 @@ PrefabInstance:
       propertyPath: m_AnchoredPosition.y
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 4671956458777926765, guid: 11ac2a591441d5940b0b146f6dd3025e,
-        type: 3}
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-      value: 0
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     - target: {fileID: 6289408088348100223, guid: 11ac2a591441d5940b0b146f6dd3025e,
         type: 3}
       propertyPath: m_AnchorMax.y
@@ -5952,26 +5912,6 @@ PrefabInstance:
       propertyPath: m_AnchoredPosition.y
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 7147764517796332529, guid: 11ac2a591441d5940b0b146f6dd3025e,
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-    - target: {fileID: 7147764517796332529, guid: 11ac2a591441d5940b0b146f6dd3025e,
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-    - target: {fileID: 7147764517796332529, guid: 11ac2a591441d5940b0b146f6dd3025e,
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     - target: {fileID: 7853531429736316437, guid: 11ac2a591441d5940b0b146f6dd3025e,
         type: 3}
       propertyPath: m_AnchorMax.y
@@ -6002,24 +5942,9 @@ PrefabInstance:
       propertyPath: m_AnchoredPosition.y
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 8772036016955710174, guid: 11ac2a591441d5940b0b146f6dd3025e,
+    - target: {fileID: 8514402739299761482, guid: 11ac2a591441d5940b0b146f6dd3025e,
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-      propertyPath: m_AnchorMax.y
-      value: 0
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-    - target: {fileID: 8772036016955710174, guid: 11ac2a591441d5940b0b146f6dd3025e,
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-      objectReference: {fileID: 0}
-    - target: {fileID: 8772036016955710174, guid: 11ac2a591441d5940b0b146f6dd3025e,
-        type: 3}
-      propertyPath: m_AnchoredPosition.y
+      propertyPath: m_IsActive
       value: 0
       objectReference: {fileID: 0}
     m_RemovedComponents: []
diff --git a/Assets/Script/MainPanel/ContactEntryController.cs b/Assets/Script/MainPanel/ContactEntryController.cs
index fbfc356..d2a40a0 100644
--- a/Assets/Script/MainPanel/ContactEntryController.cs
+++ b/Assets/Script/MainPanel/ContactEntryController.cs
@@ -11,8 +11,8 @@ namespace Script
 {
     public class ContactEntryController : MonoBehaviour, IController
     {
-        private Transform _background;
-        private Transform _backgroundName;
+        private Image _background;
+        private Text _backgroundName;
         private GameObject _confirmBtnTime;
         private Text _confirmBtnTimeText;
         private Button _confirmButton;
@@ -37,36 +37,24 @@ namespace Script
         {
             _usersItem = item;
             _meetingContacts = meetingContactsController;
+
+            _background = transform.Find("headBackground/image").GetComponent<Image>();
+            _backgroundName = transform.Find("headBackground/Name").GetComponent<Text>();
             ///头像赋值
             if (string.IsNullOrEmpty(item.avatar))
             {
                 var randomColor = WebRTCUtil.GetRandomColor();
-                _background = transform.Find("headBackground");
-                if (_background != null)
-                {
-                    var image = _background.GetComponent<Image>();
-                    if (image != null) image.color = randomColor;
-                }
-
-                _backgroundName = _background.transform.Find("Name");
+                if (_background != null) _background.color = randomColor;
                 if (_backgroundName != null)
-                {
-                    var textComponent = _backgroundName.GetComponent<Text>();
-                    if (textComponent != null && !string.IsNullOrEmpty(item.name))
-                        textComponent.text = item.name.Substring(0, 1);
-                }
+                    if (!string.IsNullOrEmpty(item.name))
+                        _backgroundName.text = item.name.Substring(0, 1);
             }
             else
             {
-                _background = transform.Find("headBackground");
                 if (_background != null)
-                {
-                    var imageComponent = _background.GetComponent<Image>();
-                    if (imageComponent != null) WebRTCUtil.DownloadAndSetAvatar(item.avatar, imageComponent);
-                }
-
-                _backgroundName = _background.transform.Find("Name");
-                if (_backgroundName != null) _backgroundName.GetComponent<Text>().text = "";
+                    if (_background != null)
+                        WebRTCUtil.DownloadAndSetAvatar(item.avatar, _background);
+                if (_backgroundName != null) _backgroundName.text = "";
             }
 
             if (!string.IsNullOrEmpty(item.name))
diff --git a/Assets/Script/MainPanel/MainPanel.cs b/Assets/Script/MainPanel/MainPanel.cs
index a148316..df8779f 100644
--- a/Assets/Script/MainPanel/MainPanel.cs
+++ b/Assets/Script/MainPanel/MainPanel.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using Script.Util;
 using Stary.Evo;
 using Stary.Evo.UIFarme;
+using Unity.RenderStreaming;
 using UnityEngine;
 using UnityEngine.UI;
 
@@ -61,6 +62,7 @@ namespace Script
         public override string UIPath => "Canvas";
 
         public Action<List<UsersItem>> OnUsersChangedEvnent;
+        private Dictionary<UsersItem, GameObject> _userMap = new();
 
         private GameObjectPool _objectPool;
 
@@ -90,8 +92,6 @@ namespace Script
         {
             base.OnEnter(complete);
             _meetingInfoList.OnEnter();
-            ;
-
             _titleText.text = this.GetSystem<IGlobalConfigSystem>().GetConnectionName();
             this.GetSystem<IGlobalConfigSystem>().StartConnectionTime(_timeText);
             _idText.text = this.GetSystem<IGlobalConfigSystem>().GetConnectionId();
@@ -100,15 +100,14 @@ namespace Script
             _contactsTog.onValueChanged.AddListener(OnContactsTog);
             _meetingOrganizersTog.onValueChanged.AddListener(OnMeetingOrganizersTog);
             OnUsersChangedEvnent += OnUsersChanged;
+            GameObject.FindObjectOfType<HostConnection>().OnParticipantDisconnected += OnUsersChangedDisconnected;
         }
 
 
         public override void OnExit(float delay = 0)
         {
             base.OnExit(delay);
-            _meetingContacts.OnExit();
             _meetingInfoList.OnExit();
-            _meetingChat.OnExit();
             _arrowLeft.onClick.RemoveListener(OnArrowLeftClick);
             _chatTog.onValueChanged.RemoveListener(OnChatTog);
             _contactsTog.onValueChanged.RemoveListener(OnContactsTog);
@@ -118,20 +117,44 @@ namespace Script
 
         private async void OnUsersChanged(List<UsersItem> obj)
         {
-            for (var i = 0; i < _objectPool.transform.childCount; i++)
-                _objectPool.Release(_objectPool.transform.GetChild(i).gameObject);
+            foreach (var user in _userMap) _objectPool.Release(user.Value.gameObject);
+
+            _userMap.Clear();
             _roomPeopleNumText.text = obj.Count.ToString();
             for (var i = 0; i < obj.Count; i++)
             {
+                if (i > 4) break;
                 var entry = _objectPool.Get();
                 await WebRTCUtil.DownloadAndSetAvatar(obj[i].avatar,
                     entry.transform.Find("image").GetComponent<Image>());
+                _userMap.TryAdd(obj[i], entry);
             }
 
             // 更新会议聊天面板人数
             _meetingChat.OnUserCountChangedEvent?.Invoke(obj.Count);
         }
 
+        private void OnUsersChangedDisconnected(string obj)
+        {
+            UsersItem usersItem = null;
+            foreach (var item in _userMap.Keys)
+                if (item.participantId == obj)
+                {
+                    usersItem = item;
+                    break;
+                }
+
+            if (usersItem != null)
+                if (_userMap.TryGetValue(usersItem, out var entry))
+                {
+                    _objectPool.Release(entry);
+                    _userMap.Remove(usersItem);
+                }
+
+            _roomPeopleNumText.text = _userMap.Count.ToString();
+            _meetingChat.OnUserCountChangedEvent?.Invoke(_userMap.Count);
+        }
+
         private void OnMeetingOrganizersTog(bool value)
         {
             _meetingInfoList.PanelGo.SetActive(value);
@@ -140,13 +163,15 @@ namespace Script
         private void OnContactsTog(bool value)
         {
             _meetingContacts.PanelGo.SetActive(value);
-            if (value) _meetingContacts.OnEnter();
+            if (value)
+                _meetingContacts.OnEnter();
         }
 
         private void OnChatTog(bool value)
         {
             _meetingChat.PanelGo.SetActive(value);
-            if (value) _meetingChat.OnEnter();
+            if (value)
+                _meetingChat.OnEnter();
         }
 
         private void OnArrowLeftClick()
@@ -156,6 +181,8 @@ namespace Script
         public override void OnDestroy()
         {
             base.OnDestroy();
+            _meetingChat.OnDestroy();
+            _meetingContacts.OnDestroy();
         }
 
         [Serializable]
diff --git a/Assets/Script/MainPanel/MeetingChat.cs b/Assets/Script/MainPanel/MeetingChat.cs
index 756130b..d9025b1 100644
--- a/Assets/Script/MainPanel/MeetingChat.cs
+++ b/Assets/Script/MainPanel/MeetingChat.cs
@@ -26,31 +26,58 @@ namespace Script
 
         private List<ChatData> _chatDatas = new();
 
+        private InputField _messageInput;
+        private Button _sendButton;
+
         public void Initialize(GameObject panelGo, MainPanel mainPanel)
         {
             PanelGo = panelGo;
             _mainPanel = mainPanel;
             _content = panelGo.transform.Find("MeetingGrid/Viewport/Content");
-            _objectRightPool = panelGo.transform.Find("MeetingGrid/LeftPool").GetComponent<GameObjectPool>();
-            _objectLeftPool = panelGo.transform.Find("MeetingGrid/RightPool").GetComponent<GameObjectPool>();
-
+            _objectLeftPool = panelGo.transform.Find("MeetingGrid/LeftPool").GetComponent<GameObjectPool>();
+            _objectRightPool = panelGo.transform.Find("MeetingGrid/RightPool").GetComponent<GameObjectPool>();
             _connectionTimeText = panelGo.transform.Find("MeetingNum/Time").GetComponent<Text>();
-            _connectionTimeText.text = this.GetSystem<IGlobalConfigSystem>().GetConnectionStartTime();
-
             _userCountText = panelGo.transform.Find("MeetingNum/Num").GetComponent<Text>();
-            _userCountText.text = this.GetSystem<IGlobalConfigSystem>().GetUserCount().ToString();
-        }
 
-        public async void OnEnter()
-        {
+            _messageInput = panelGo.transform.Find("MettingSend/InputField").GetComponent<InputField>();
+            _sendButton = panelGo.transform.Find("MettingSend/SendBtn").GetComponent<Button>();
+            _sendButton.onClick.AddListener(OnSendButtonClick);
             OnUserCountChangedEvent += OnUserCountChanged;
             GameObject.FindObjectOfType<MessageChannel>().OnChatMessageReceived += OnChatMessageReceivedEvent;
         }
 
-        public async void OnExit()
+
+        public async void OnEnter()
+        {
+            _connectionTimeText.text = this.GetSystem<IGlobalConfigSystem>().GetConnectionStartTime();
+            _userCountText.text = this.GetSystem<IGlobalConfigSystem>().GetUserCount().ToString();
+        }
+
+        public async void OnDestroy()
         {
             OnUserCountChangedEvent -= OnUserCountChanged;
             GameObject.FindObjectOfType<MessageChannel>().OnChatMessageReceived -= OnChatMessageReceivedEvent;
+            _objectRightPool.AllRelease();
+            _objectLeftPool.AllRelease();
+        }
+
+        private void OnSendButtonClick()
+        {
+            if (string.IsNullOrEmpty(_messageInput.text)) return;
+            var chatData = new ChatData
+            {
+                id = "msg_" + Guid.NewGuid().ToString(),
+                senderId = this.GetSystem<IGlobalConfigSystem>().GetUserId(),
+                senderName = this.GetSystem<IGlobalConfigSystem>().GetConnectionName(),
+                senderAvatar = $"{this.GetSystem<IGlobalConfigSystem>().IP}/images/head/" +
+                               $"{this.GetSystem<IGlobalConfigSystem>().GetConnectionTexture()}.png",
+                type = "text",
+                content = _messageInput.text,
+                isSelf = "true",
+                timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")
+            };
+            GameObject.FindObjectOfType<MessageChannel>().SendMessage<ChatData>(_messageInput.text, chatData);
+            _messageInput.text = "";
         }
 
         private void OnChatMessageReceivedEvent(string connectionId, ChatData data)
@@ -66,7 +93,7 @@ namespace Script
 
         private void SetMessageEntry(ChatData data, GameObject entry)
         {
-            var head = entry.transform.Find("head");
+            var head = entry.transform.Find("head/image");
             var name = entry.transform.Find("name");
             var message = entry.transform.Find("message");
             var sprite = entry.transform.Find("sprite");
@@ -89,11 +116,15 @@ namespace Script
                 message.GetComponent<Text>().text = data.content;
                 sprite.gameObject.SetActive(false);
             }
-            else if (data.type == "image")
+            else if (data.type == "file")
             {
                 message.gameObject.SetActive(false);
                 sprite.gameObject.SetActive(true);
                 //TODO  图片传输功能
+                if (WebRTCUtil.TryDecodeDataUrlToTexture(data.content, out var texture))
+                    sprite.GetComponent<Image>().sprite = Sprite.Create(texture,
+                        new Rect(0, 0, texture.width, texture.height),
+                        Vector2.one);
             }
         }
 
diff --git a/Assets/Script/MainPanel/MeetingContacts.cs b/Assets/Script/MainPanel/MeetingContacts.cs
index 8de93bd..13ee6ce 100644
--- a/Assets/Script/MainPanel/MeetingContacts.cs
+++ b/Assets/Script/MainPanel/MeetingContacts.cs
@@ -65,7 +65,7 @@ namespace Script
             _confirmButton = _confirmingPop.transform.Find("bg/invite").GetComponent<Button>();
             _cancelButton = _confirmingPop.transform.Find("bg/cancel").GetComponent<Button>();
 
-            _avatarImage = _confirmingPop.transform.Find("ParticipantEntry/head").GetComponent<Image>();
+            _avatarImage = _confirmingPop.transform.Find("ParticipantEntry/head/image").GetComponent<Image>();
             _nameText = _confirmingPop.transform.Find("ParticipantEntry/Name").GetComponent<Text>();
             _messageText = _confirmingPop.transform.Find("ParticipantEntry/Message").GetComponent<Text>();
 
@@ -94,8 +94,9 @@ namespace Script
         }
 
 
-        public void OnExit()
+        public void OnDestroy()
         {
+            _objectPool.AllRelease();
         }
 
         public void ClickContactEntry(Sprite avatarImage, string name, MainPanel.UsersItem item)
@@ -106,7 +107,7 @@ namespace Script
             _idText.text = this.GetSystem<IGlobalConfigSystem>().GetConnectionId();
 
             _avatarImage.sprite = avatarImage;
-            var avatarName = _avatarImage.transform.Find("Name").GetComponent<Text>();
+            var avatarName = _confirmingPop.transform.Find("ParticipantEntry/head/Name").GetComponent<Text>();
             avatarName.text = name;
             _nameText.text = item.name;
             _messageText.text = item.userId;
diff --git a/Assets/Script/MainPanel/MeetingInfoList.cs b/Assets/Script/MainPanel/MeetingInfoList.cs
index 112809c..d30ea57 100644
--- a/Assets/Script/MainPanel/MeetingInfoList.cs
+++ b/Assets/Script/MainPanel/MeetingInfoList.cs
@@ -123,8 +123,8 @@ namespace Script
         {
             var transform = entry.transform;
             ///头像赋值
-            var background = transform.Find("headBackground");
-            var backgroundName = background.transform.Find("Name");
+            var background = transform.Find("headBackground/image");
+            var backgroundName = transform.Find("headBackground/Name");
             if (string.IsNullOrEmpty(item.avatar))
             {
                 var randomColor = WebRTCUtil.GetRandomColor();
@@ -145,7 +145,6 @@ namespace Script
             }
             else
             {
-                background = transform.Find("headBackground");
                 if (background != null)
                 {
                     var imageComponent = background.GetComponent<Image>();
@@ -228,6 +227,11 @@ namespace Script
             GameObject.FindObjectOfType<HostConnection>().OnParticipantDisconnected -= OnParticipantDisconnected;
         }
 
+        public void Destroy()
+        {
+            _objectPool.AllRelease();
+        }
+
         public class MessageRecordInfo
         {
             public MainPanel.UsersItem item;
diff --git a/Assets/Script/Pool/GameObjectPool.cs b/Assets/Script/Pool/GameObjectPool.cs
index 45bb528..9fc838b 100644
--- a/Assets/Script/Pool/GameObjectPool.cs
+++ b/Assets/Script/Pool/GameObjectPool.cs
@@ -34,4 +34,10 @@ public class GameObjectPool : MonoBehaviour
         go.transform.SetParent(transform, false);
         _pool.Push(go);
     }
+
+    public void AllRelease()
+    {
+        foreach (var go in _pool) Destroy(go);
+        _pool.Clear();
+    }
 }
\ No newline at end of file
diff --git a/Assets/Script/Util/WebRTCUtil.cs b/Assets/Script/Util/WebRTCUtil.cs
index e5889f5..e1de001 100644
--- a/Assets/Script/Util/WebRTCUtil.cs
+++ b/Assets/Script/Util/WebRTCUtil.cs
@@ -55,5 +55,27 @@ namespace Script.Util
                 Debug.LogError($"下载头像失败: {e.Message}");
             }
         }
+
+        /// <summary>
+        /// 尝试将dataUrl解码为Texture2D
+        /// </summary>
+        /// <param name="dataUrl"></param>
+        /// <param name="tex"></param>
+        /// <returns></returns>
+        public static bool TryDecodeDataUrlToTexture(string dataUrl, out Texture2D tex)
+        {
+            tex = null;
+            if (string.IsNullOrEmpty(dataUrl)) return false;
+            if (!dataUrl.StartsWith("data:image/")) return false;
+
+            var comma = dataUrl.IndexOf(',');
+            if (comma < 0) return false;
+
+            var b64 = dataUrl.Substring(comma + 1);
+            var bytes = Convert.FromBase64String(b64);
+
+            tex = new Texture2D(2, 2, TextureFormat.RGBA32, false);
+            return tex.LoadImage(bytes);
+        }
     }
 }
\ No newline at end of file