From 211576e0f897b304d89e99f475717de35d36835f Mon Sep 17 00:00:00 2001
From: Sinai <outlander.sinai@gmail.com>
Date: Fri, 28 May 2021 18:22:44 +1000
Subject: [PATCH] Fallback to LateUpdate if OnPostRender listener failed

---
 src/Core/ExplorerBehaviour.cs | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/src/Core/ExplorerBehaviour.cs b/src/Core/ExplorerBehaviour.cs
index 31e260a..dc81a1c 100644
--- a/src/Core/ExplorerBehaviour.cs
+++ b/src/Core/ExplorerBehaviour.cs
@@ -32,16 +32,32 @@ namespace UnityExplorer
         public ExplorerBehaviour(IntPtr ptr) : base(ptr) { }
 #endif
 
+        private static bool onPostRenderFailed;
+
         internal void Awake()
         {
+            try
+            {
 #if CPP
-            Camera.onPostRender = Camera.onPostRender == null
-               ? new Action<Camera>(OnPostRender)
-               : Il2CppSystem.Delegate.Combine(Camera.onPostRender, (Camera.CameraCallback)new Action<Camera>(OnPostRender)).Cast<Camera.CameraCallback>();
+                Camera.onPostRender = Camera.onPostRender == null
+                   ? new Action<Camera>(OnPostRender)
+                   : Il2CppSystem.Delegate.Combine(Camera.onPostRender, 
+                        (Camera.CameraCallback)new Action<Camera>(OnPostRender)).Cast<Camera.CameraCallback>();
 
+                if (Camera.onPostRender == null || Camera.onPostRender.delegates == null)
+                {
+                    ExplorerCore.LogWarning("Failed to add Camera.onPostRender listener, falling back to LateUpdate instead!");
+                    onPostRenderFailed = true;
+                }
 #else
-            Camera.onPostRender += OnPostRender;
+                Camera.onPostRender += OnPostRender;
 #endif
+            }
+            catch (Exception ex)
+            {
+                ExplorerCore.LogWarning($"Exception adding onPostRender listener: {ex.ReflectionExToString()}\r\nFalling back to LateUpdate!");
+                onPostRenderFailed = true;
+            }
         }
 
         internal void Update()
@@ -54,7 +70,13 @@ namespace UnityExplorer
             ExplorerCore.FixedUpdate();
         }
 
-        internal static void OnPostRender(Camera camera)
+        internal void LateUpdate()
+        {
+            if (onPostRenderFailed)
+                OnPostRender(null);
+        }
+
+        internal static void OnPostRender(Camera _)
         {
             ExplorerCore.OnPostRender();
         }