闪黑问题

Assets/Script/MultiParticipantHostSample.cs

@@ -1,4 +1,4 @@
-// D:\Project\Unity\webrtc\Assets\Script\MultiParticipantHostSample.cs
+// D:\Project\Unity\webrtc\Assets\Script\MultiParticipantHostSample.cs
 using System.Collections.Generic;
 using System.Linq;
 using UnityEngine;
@@ -165,7 +165,9 @@ namespace Unity.RenderStreaming
             // 绑定视频：当Receiver收到纹理时更新RawImage
             ps.videoReceiver.OnUpdateReceiveTexture += texture =>
             {
-                if (ui.videoImage != null)
+                ui.videoImage.color = Color.white;
+                // 防止纹理为null时导致RawImage闪黑（重协商/track切换时可能短暂为null）
+                if (ui.videoImage != null && texture != null)
                     ui.videoImage.texture = texture;
             };
 
@@ -208,7 +210,6 @@ namespace Unity.RenderStreaming
             // 根节点
             ui.root = new GameObject($"ParticipantUI_{participantId}");
             ui.root.transform.SetParent(participantVideoContainer, false);
-
             // 添加VerticalLayoutGroup使内容垂直排列
             var vlg = ui.root.AddComponent<VerticalLayoutGroup>();
             vlg.childControlWidth = true;
@@ -216,7 +217,8 @@ namespace Unity.RenderStreaming
             vlg.childForceExpandWidth = true;
             vlg.childForceExpandHeight = false;
             vlg.spacing = 2;
-
+            ui.root.transform.GetComponent<RectTransform>().anchorMin = Vector2.zero;
+            ui.root.transform.GetComponent<RectTransform>().anchorMax = Vector2.one;
             // 名称标签
             var labelObj = new GameObject("NameLabel");
             labelObj.transform.SetParent(ui.root.transform, false);