fix the render texture issue

Assets/PerfectWorld/Resources/UI/PlayerPreviewPlaceholderRT.renderTexture

@@ -16,7 +16,7 @@ RenderTexture:
   m_Height: 512
   m_AntiAliasing: 1
   m_MipCount: -1
-  m_DepthStencilFormat: 0
+  m_DepthStencilFormat: 90
   m_ColorFormat: 12
   m_MipMap: 0
   m_GenerateMips: 1

Assets/PerfectWorld/Scripts/World/LitModelHolder.cs

@@ -6,7 +6,7 @@ using BrewMonster.Scripts;
 using Cysharp.Threading.Tasks;
 using UnityEngine;
 
-public class LitModelHolder : MonoBehaviour
+public class LitModelHolder : MonoSingleton<LitModelHolder>
 {
     [SerializeField] private AddressableObject[] addressableObjects;
     private CECHostPlayer _hostPlayer;
@@ -23,7 +23,9 @@ public class LitModelHolder : MonoBehaviour
     [SerializeField] private int _maxUnloadsPerTick = 16;
     
     private int _scanIndex = 0;
-    private List<AddressableObject> _objectsToLoad = new List<AddressableObject>();
+
+    // this list is only available if we want to wait until all the objects are loaded.
+    private List<AddressableObject> _objectsToLoad = new List<AddressableObject>(); 
     private List<AddressableObject> _objectsToUnload = new List<AddressableObject>();
 
     private Vector3 _lastHostPos;
@@ -80,7 +82,7 @@ public class LitModelHolder : MonoBehaviour
 
         await UniTask.DelayFrame(1); // wait for the host player to be initialized.
 
-        await TickStreaming(_hostPlayer.transform.position, immediateSqr, paddingSqr, destroyToken);
+        await TickStreaming(_hostPlayer.transform.position, immediateSqr, paddingSqr, true, destroyToken);
     }
 
     private async UniTask StreamByDistanceLoop(CancellationToken destroyToken)
@@ -119,13 +121,13 @@ public class LitModelHolder : MonoBehaviour
             _hasLastHostPos = true;
             _lastHostPos = hostPos;
 
-            await TickStreaming(hostPos, immediateSqr, paddingSqr, destroyToken);
+            await TickStreaming(hostPos, immediateSqr, paddingSqr, false, destroyToken);
 
             await UniTask.Delay(intervalMs, cancellationToken: destroyToken);
         }
     }
     
-    private async UniTask TickStreaming(Vector3 hostPos, float immediateSqr, float paddingSqr, CancellationToken destroyToken)
+    private async UniTask TickStreaming(Vector3 hostPos, float immediateSqr, float paddingSqr, bool waitUntilFinished, CancellationToken destroyToken)
     {
         if (addressableObjects == null || addressableObjects.Length == 0)
         {
@@ -160,6 +162,7 @@ public class LitModelHolder : MonoBehaviour
                 if (!_currentObjectToCheck.IsLoaded && !_currentObjectToCheck.IsLoading)
                 {
                     _currentObjectToCheck.LoadAsset().Forget();
+                    _objectsToLoad.Add(_currentObjectToCheck);
                 }
             }
             else if (distSqr > paddingSqr)
@@ -176,6 +179,14 @@ public class LitModelHolder : MonoBehaviour
         {
             obj.UnloadAsset();
         }
+
+        while (!IsFinishedLoadingObjects() && waitUntilFinished)
+        {
+            await UniTask.DelayFrame(1, cancellationToken: destroyToken);
+        }
+        _objectsToLoad.Clear();
+
+        BMLogger.Log("[LitModelHolder] All objects are loaded.");
     }
 
     /// <summary>
@@ -186,6 +197,30 @@ public class LitModelHolder : MonoBehaviour
     {
         return CECGameRun.Instance.GetHostPlayer();
     }
+
+    /// <summary>
+    /// Return True if all the objects that are needed to be loaded are loaded.
+    /// </summary>
+    /// <returns></returns>
+    private bool IsFinishedLoadingObjects()
+    {
+        AddressableObject obj = null;
+        for (int i = 0; i < _objectsToLoad.Count; i++)
+        {
+            obj = _objectsToLoad[i];
+            if (obj == null)
+            {
+                continue;
+            }
+
+            if (!obj.IsLoaded && !obj.IsLoading)
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
     
     private void OnDestroy()
     {