diff --git a/Runtime/Coffee.UIParticle.R.dll b/Runtime/Coffee.UIParticle.R.dll
new file mode 100644
index 0000000..de59dad
Binary files /dev/null and b/Runtime/Coffee.UIParticle.R.dll differ
diff --git a/Runtime/Coffee.UIParticle.R.dll.meta b/Runtime/Coffee.UIParticle.R.dll.meta
new file mode 100644
index 0000000..fb448a1
--- /dev/null
+++ b/Runtime/Coffee.UIParticle.R.dll.meta
@@ -0,0 +1,33 @@
+fileFormatVersion: 2
+guid: 4d73b3825bf044d418ae21bb331d3902
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 1
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      Any: 
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        DefaultValueInitialized: true
+  - first:
+      Windows Store Apps: WindowsStoreApps
+    second:
+      enabled: 0
+      settings:
+        CPU: AnyCPU
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs b/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs
index 21ff15a..7f5326a 100644
--- a/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs
+++ b/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs
@@ -133,6 +133,8 @@ namespace Coffee.UIParticleInternal
 #if UNITY_EDITOR
         private string _jsonText;
 
+        public static bool hasInstance => s_Instance;
+
         public static T instance
         {
             get
diff --git a/Runtime/Internal/Utilities/MaterialRepository.cs b/Runtime/Internal/Utilities/MaterialRepository.cs
index 7f15945..cd3c05e 100644
--- a/Runtime/Internal/Utilities/MaterialRepository.cs
+++ b/Runtime/Internal/Utilities/MaterialRepository.cs
@@ -15,7 +15,7 @@ namespace Coffee.UIParticleInternal
 
 #if UNITY_EDITOR
         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
-        private static void Clear()
+        public static void Clear()
         {
             s_Repository.Clear();
         }
diff --git a/Runtime/Internal/Utilities/Misc.cs b/Runtime/Internal/Utilities/Misc.cs
index 26c03cf..3f6fb47 100644
--- a/Runtime/Internal/Utilities/Misc.cs
+++ b/Runtime/Internal/Utilities/Misc.cs
@@ -69,6 +69,8 @@ namespace Coffee.UIParticleInternal
 
             return prefabStage.prefabContentsRoot.GetComponentsInChildren<T>(true);
         }
+
+        public static bool isBatchOrBuilding => Application.isBatchMode || BuildPipeline.isBuildingPlayer;
 #endif
     }
 }