Updated DecalProjector and DecalRendererFeature to work with CoreCLR

Author: jrs-unity

Packages/com.unity.render-pipelines.universal/Runtime/Decal/DecalProjector.cs

@@ -435,5 +435,19 @@ void ISerializationCallbackReceiver.OnAfterDeserialize()
                 version = Version.RenderingLayerMask;
             }
         }
+
+#if UNITY_EDITOR
+        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
+        static void ResetStaticsOnLoad()
+        {
+            onDecalAdd = null;
+            onDecalRemove = null;
+            onDecalPropertyChange = null;
+            onAllDecalPropertyChange = null;
+            onDecalMaterialChange = null;
+
+            defaultMaterial = null;
+        }
+#endif
     }
 }

Packages/com.unity.render-pipelines.universal/Runtime/RendererFeatures/DecalRendererFeature.cs

@@ -128,7 +128,7 @@ public void Release(DecalEntityManager decalEntityManager)
 
         public void Dispose()
         {
-            m_DecalEntityManager.Dispose();
+            m_DecalEntityManager?.Dispose();
             m_DecalEntityManager = null;
             m_ReferenceCounter = 0;
 
@@ -182,7 +182,7 @@ private void OnDecalMaterialChange(DecalProjector decalProjector)
     [Icon("Packages/com.unity.render-pipelines.core/Editor/Icons/Processed/DecalProjector Icon.asset")]
     public partial class DecalRendererFeature : ScriptableRendererFeature
     {
-        private static SharedDecalEntityManager sharedDecalEntityManager { get; } = new SharedDecalEntityManager();
+        private static SharedDecalEntityManager sharedDecalEntityManager = new SharedDecalEntityManager();
 
         [SerializeField]
         private DecalSettings m_Settings = new DecalSettings();
@@ -557,5 +557,14 @@ private void ChangeAdaptivePerformanceDrawDistances()
             }
 #endif
         }
+
+#if UNITY_EDITOR
+        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
+        static void ResetStaticsOnLoad()
+        {
+            sharedDecalEntityManager?.Dispose();
+            sharedDecalEntityManager = new SharedDecalEntityManager();
+        }
+#endif
     }
 }