refactor(srp): tighten renderer feature lifecycle invalidation

managed/XCEngine.RenderPipelines.Universal/Rendering/Universal/ScriptableRendererFeature.cs

@@ -7,12 +7,42 @@ namespace XCEngine.Rendering.Universal
     {
         private bool m_disposed;
         private bool m_runtimeCreated;
+        private bool m_isActive = true;
+        private int m_runtimeStateVersion = 1;
+        private ScriptableRendererData m_owner;
 
         protected ScriptableRendererFeature()
         {
         }
 
-        public bool isActive { get; set; } = true;
+        public bool isActive
+        {
+            get
+            {
+                return m_isActive;
+            }
+            set
+            {
+                if (m_isActive == value)
+                {
+                    return;
+                }
+
+                m_isActive = value;
+                SetDirty();
+            }
+        }
+
+        internal void BindOwnerInstance(
+            ScriptableRendererData owner)
+        {
+            m_owner = owner;
+        }
+
+        internal int GetRuntimeStateVersionInstance()
+        {
+            return m_runtimeStateVersion;
+        }
 
         internal void CreateInstance()
         {
@@ -28,7 +58,8 @@ namespace XCEngine.Rendering.Universal
 
         internal void ReleaseRuntimeResourcesInstance()
         {
-            if (m_disposed)
+            if (m_disposed ||
+                !m_runtimeCreated)
             {
                 return;
             }
@@ -93,6 +124,33 @@ namespace XCEngine.Rendering.Universal
         protected virtual void ReleaseRuntimeResources()
         {
         }
+
+        protected void SetDirty()
+        {
+            if (m_runtimeCreated &&
+                !m_disposed)
+            {
+                ReleaseRuntimeResources();
+            }
+
+            m_disposed = false;
+            m_runtimeCreated = false;
+
+            unchecked
+            {
+                ++m_runtimeStateVersion;
+            }
+
+            if (m_runtimeStateVersion <= 0)
+            {
+                m_runtimeStateVersion = 1;
+            }
+
+            if (m_owner != null)
+            {
+                m_owner.InvalidateRendererFeaturesInstance();
+            }
+        }
     }
 }