chore(release): 5.0.0-preview.4 [skip ci]

# [5.0.0-preview.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.3...v5.0.0-preview.4) (2024-06-27) ### Bug Fixes * generated baking-camera object remains in the prefab or scene (again) ([5babd6d](5babd6d07b)) * SetParticleSystemInstance/Prefab APIs destroy generated objects ([4b30c16](4b30c16b9a)) ### Features * add 'custom view' option. ([4252f11](4252f1199b)) * restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` (again) ([04232b6](04232b6749)) * the rendering order list in inspector is now more compact ([9212eaa](9212eaa84c))
refactor
2026-05-14 20:20:06 +00:00 · 2024-06-27 07:51:20 +00:00 · 2024-06-27 16:48:23 +09:00 · 2024-06-27 16:26:48 +09:00 · 2024-06-27 16:25:28 +09:00 · 2024-06-27 16:23:48 +09:00
42 changed files with 540 additions and 1113 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,198 +1,57 @@
-## [4.12.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.12.0...v4.12.1) (2026-03-24)
+# [5.0.0-preview.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.3...v5.0.0-preview.4) (2024-06-27)


 ### Bug Fixes

-* ignore "EditorOnly" tagged gameObjects on refresh ([031d46a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/031d46a3216c942d2d1a6ccfadf5f0b9e3ce3006))
-
-# [4.12.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.4...v4.12.0) (2026-03-24)
+* generated baking-camera object remains in the prefab or scene (again) ([5babd6d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5babd6d07b2ac17341a29964baf552785cefd90e))
+* SetParticleSystemInstance/Prefab APIs destroy generated objects ([4b30c16](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/4b30c16b9a48531873f9be91eec2a573370d17a1))


 ### Features

-* explicit null checks ([5384f61](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5384f61c569e9f78ff9d5b45acfc6f5c2f021a87))
+* add 'custom view' option. ([4252f11](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/4252f1199b8a7038a6fb447989534c512ec40283))
+* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` (again) ([04232b6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/04232b67491e4506dbf84ce77c1dee7127936a3a))
+* the rendering order list in inspector is now more compact ([9212eaa](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9212eaa84c85524c00f9228ff8ba887e028838dc))

-## [4.11.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.3...v4.11.4) (2025-12-24)
+# [5.0.0-preview.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.2...v5.0.0-preview.3) (2024-06-21)


 ### Bug Fixes

-* add early return for case where subEmitter module is disabled ([d1386a1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/d1386a12216743a6e09f1b9b87bea1dfcf7702e4))
-* avoid endless loop ([eb2e862](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/eb2e862e80e549c8cf16ddfed776c101c2413bac)), closes [#392](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/392)
+* generated baking-camera object remains in the prefab or scene ([fd66928](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fd66928efe584aeb4f6347b9a9dca97d9512eb88))

-## [4.11.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.2...v4.11.3) (2025-10-14)
+# [5.0.0-preview.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.1...v5.0.0-preview.2) (2024-06-20)


 ### Bug Fixes

-* fix icon ([a9461ec](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a9461ecb4d40d7fe878e12465d6e38faae7ae65b))
-* fix URL link in README ([1c8c65d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1c8c65d25e7f6fe7b1d20da4461333df8fc7578e)), closes [#376](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/376)
-* fix: second and subsequent bursts not displayed when world simulation and non-looping ([df2f3ca](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/df2f3caafbe279f1457d74f8183cb561ac14aa17)), closes [#326](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/326)
-* UIParticle in canvas with 0f-0.01f alpha value does not start to play until alpha value is greater than 0.01f, causes play calls to be delayed unintentionally if canvas alpha value is set to mentioned value range ([38aec2e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/38aec2ea1afd77677d629c86665a3342d92e49d9))
-
-## [4.11.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.1...v4.11.2) (2025-03-15)
-
-
-### Bug Fixes
-
-* IL2CPP build fails on older versions of Unity ([0da6525](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0da652520cd165b43de7404c0b0ab1fbcf9349d1))
-* NRE on enable ([0cff50e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0cff50ef696aa53fb7c46a9a737b7cf3a05b7b9b)), closes [#359](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/359)
-
-## [4.11.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.0...v4.11.1) (2025-02-21)
-
-
-### Bug Fixes
-
-* component icons will no longer be displayed in the scene view ([6dfbdae](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/6dfbdae38d3822ab9c2c6f0e4ca1ca32ee98a239))
-
-# [4.11.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.7...v4.11.0) (2025-02-21)
+* 'Resource ID out of range in GetResource' error in overlay rendering mode ([ff78b6f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ff78b6fe32ceed8ddad50e63dcb7a202eab95266)), closes [#308](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/308)
+* `UIParticle.transform.localScale` does not scale particles ([491ee7b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/491ee7b0c3e528e1e577ae5ff2588d7c3bd8ecdb)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
+* despite not using the size module, particles become smaller based on their z position ([c96ddf2](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c96ddf293e855f7ebccaaaf3b112092955545e61)), closes [#316](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/316)
+* the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues ([a9c2b19](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a9c2b19edf00e1c86c928ef23405906952ede852)), closes [#299](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/299) [#312](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/312)
+* UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([63b24d8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/63b24d8a8b478b3165733ece3eec524e88b28855)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
+* UIParticle is scaled incorrectly with nested canvases ([c95d8c6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c95d8c6b1774396ff252d13121ad32a3cab0fe5c)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)


 ### Features

-* add 'TimeScaleMultiplier' option ([925af0b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/925af0b6046f65f23a778f67cefa8ff9cbedb513))
+* remove overlay window (editor) ([fc3fbdd](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fc3fbdd230595ad3471875ec6fec384a3dad0d17))
+* reset previous position on start play for world space simulation ([e741584](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e7415845074143abae23e3ae7eedc767a01d020d)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303)
+* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([dfb94f4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/dfb94f4badfb3035a4374579c53293460b4fd946))

-## [4.10.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.6...v4.10.7) (2025-01-14)
-
-
-### Bug Fixes
-
-* editor crashed on exit play mode (editor, windows) ([47ee45c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/47ee45cbbe651a8f87ca2b8a3948f8b88db8211e)), closes [#351](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/351)
-
-## [4.10.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.5...v4.10.6) (2025-01-03)
-
-
-### Bug Fixes
-
-* sub-emitter particles may not render correctly in certain scenarios ([8276684](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/8276684c3b1646f0490ed64557547ba15281664a)), closes [#348](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/348)
-* sub-emitter's `inherit velocity` module doubles at runtime ([67de3d1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/67de3d1bd3e16dc9b564625cb990c53d75769506)), closes [#349](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/349)
-
-## [4.10.5](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.4...v4.10.5) (2024-12-23)
-
-
-### Bug Fixes
-
-* '3D' scale toggle in the inspector does not keep on reload ([934f4b8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/934f4b8f1c61f8ff20228d0ebcea9f636a3758ed)), closes [#346](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/346)
-
-## [4.10.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.3...v4.10.4) (2024-12-19)
-
-
-### Bug Fixes
-
-* rendering issues when playing with opening a prefab stage ([95235a9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/95235a929b82cf681365ed6eba837d857f83e3d2)), closes [#345](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/345)
-
-## [4.10.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.2...v4.10.3) (2024-11-20)
-
-
-### Bug Fixes
-
-* if not configured as a preloaded asset, the project settings asset will be regenerated ([abe0948](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/abe09485f65dd4efd18e74675e752e0213bdf3be)), closes [#342](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/342)
-
-## [4.10.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.1...v4.10.2) (2024-11-01)
-
-
-### Bug Fixes
-
-* trail incorrect offset ([afe00a1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/afe00a1dde80eb1c0a7bb668b75f4c3733d3fa43)), closes [#335](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/335)
-
-## [4.10.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.0...v4.10.1) (2024-09-29)
-
-
-### Bug Fixes
-
-* mainTex will be ignored ([2ee69d0](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2ee69d04245fabce185f67dc9bd68c870e556564))
-
-# [4.10.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.9.1...v4.10.0) (2024-09-29)
-
-
-### Bug Fixes
-
-* component icon is not set ([5ff6ec8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5ff6ec815a174de5d3f16d424f1204c60912a8d8))
+# [5.0.0-preview.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.6...v5.0.0-preview.1) (2024-05-23)


 ### Features

-* add project settings ([1ce4e31](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1ce4e31a9681bf1a201d2723c8d97e07ecc16592))
-
-## [4.9.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.9.0...v4.9.1) (2024-08-07)
+* add project settings for UIParticle ([b6e6185](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b6e6185c521fef0f118f61cfdfdac07b87555c01))
+* change the default value of `UIParticle.scale` from `10` to `1` ([1b3c0f9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1b3c0f92dcc6a1974d1ea074821e5264200e9711)), closes [#310](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/310)
+* UIParticle no longer inherits from MaskableGraphic ([b6d921b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b6d921b3e47f749b5028d22b0e89b6eb3a1af7de))


-### Bug Fixes
+### BREAKING CHANGES

-* ParticleSystem trails gain offset on parent canvas change ([2a1cd50](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2a1cd502b452b5b56edf8bcfe91adf99d1bb5147)), closes [#323](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/323)
-
-# [4.9.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.8.1...v4.9.0) (2024-07-18)
-
-
-### Features
-
-* ParticleAttractor supports multiple ParticleSystems ([3834780](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3834780fdb43443fe6e1ef89df54d26a24d62a91))
-
-## [4.8.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.8.0...v4.8.1) (2024-06-27)
-
-
-### Bug Fixes
-
-* remove debug code ([669deb4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/669deb41d4ac589d9db93b29bc8e95383e7f28a5))
-
-# [4.8.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.7.2...v4.8.0) (2024-06-27)
-
-
-### Bug Fixes
-
-* generated baking-camera object remains in the prefab or scene (again) ([de35cba](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/de35cba34c6312c1405ed522e9927c620c78e72d))
-* SetParticleSystemInstance/Prefab APIs destroy generated objects ([ae3f3a8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ae3f3a8e62cc733420354d237ab765ac777127c8))
-
-
-### Features
-
-* add 'custom view' option. ([a703c29](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a703c2921ca08c2280d0c8fde01e4c0b33b5c69e))
-* remove overlay window (editor) ([8358170](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/835817049f4fcf00dd2bf98dbada14f041ad3544))
-* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` (again) ([88a970d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/88a970d93a2b69cf011d86bd1807569e90538e0e))
-* the rendering order list in inspector is now more compact ([be90172](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/be901724e064befacf617f4940b0331e1d31e1ca))
-
-## [4.7.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.7.1...v4.7.2) (2024-06-21)
-
-
-### Bug Fixes
-
-* generated baking-camera object remains in the prefab or scene ([0bb8438](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0bb843830197d8c1252232928becc211c0ada08d))
-
-## [4.7.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.7.0...v4.7.1) (2024-06-20)
-
-
-### Bug Fixes
-
-* despite not using the size module, particles become smaller based on their z position ([a8ed6e6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a8ed6e68584e1d9e45ed852eefcc03979ea7e0e1)), closes [#316](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/316)
-
-# [4.7.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.8...v4.7.0) (2024-06-19)
-
-
-### Bug Fixes
-
-* `UIParticle.transform.localScale` does not scale particles ([1d40e24](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1d40e24c742741e97f03c55468ccb1e505341133)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-* UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([54a4b1c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/54a4b1cdfd06400c7be89c1ee704bb42a659c7c2)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-* UIParticle is scaled incorrectly with nested canvases ([f26920f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f26920f9825547222a4afbb31cc5dc5a002c3e9b)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-
-
-### Features
-
-* reset previous position on start play for world space simulation ([3880484](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3880484ce5190c42fc79c81d0b69e3fbeda09dd0)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303)
-* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([5505247](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5505247a94a929ff89635fde512a9b95691e0043))
-
-## [4.6.8](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.7...v4.6.8) (2024-06-14)
-
-
-### Bug Fixes
-
-* 'Resource ID out of range in GetResource' error in overlay rendering mode ([05286ce](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/05286cedfd17b1a0cb90a5e918513644f47cd831)), closes [#308](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/308)
-
-## [4.6.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.6...v4.6.7) (2024-05-24)
-
-
-### Bug Fixes
-
-* the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues ([e924eb4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e924eb45968a112347471cabaeabc274e4c37ce4)), closes [#299](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/299) [#312](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/312)
+* Some members inherited from MaskableGraphic will no longer be available.

 ## [4.6.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.5...v4.6.6) (2024-05-23)

--- a/Editor/AnimatablePropertyEditor.cs
+++ b/Editor/AnimatablePropertyEditor.cs
@@ -76,7 +76,7 @@ namespace Coffee.UIExtensions
            for (var j = 0; j < mats.Count; j++)
            {
                var mat = mats[j];
-                if (mat == null || mat.shader == null) continue;
+                if (!mat || !mat.shader) continue;

                for (var i = 0; i < ShaderUtil.GetPropertyCount(mat.shader); i++)
                {
--- a/Editor/UIParticleEditor.cs
+++ b/Editor/UIParticleEditor.cs
@@ -2,19 +2,20 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text.RegularExpressions;
 using UnityEditor;
-using UnityEditor.UI;
 using UnityEditorInternal;
 using UnityEngine;
 using UnityEngine.Profiling;
 using UnityEngine.UI;
-using Coffee.UIParticleInternal;
+
 #if UNITY_2021_2_OR_NEWER
 using UnityEditor.Overlays;
 #else
 using System;
 using System.Reflection;
+using Coffee.UIParticleInternal;
 using Object = UnityEngine.Object;
 #endif
+
 #if UNITY_2021_2_OR_NEWER
 using UnityEditor.SceneManagement;

@@ -26,13 +27,8 @@ namespace Coffee.UIExtensions
 {
    [CustomEditor(typeof(UIParticle))]
    [CanEditMultipleObjects]
-    internal class UIParticleEditor : GraphicEditor
+    internal class UIParticleEditor : Editor
    {
-        internal class State : ScriptableSingleton<State>
-        {
-            public bool is3DScaleMode;
-        }
-
        //################################
        // Constant or Static Members.
        //################################
@@ -51,6 +47,7 @@ namespace Coffee.UIExtensions
        private static readonly GUIContent s_ContentPrimary = new GUIContent("Primary");
        private static readonly Regex s_RegexBuiltInGuid = new Regex(@"^0{16}.0{15}$", RegexOptions.Compiled);
        private static readonly List<Material> s_TempMaterials = new List<Material>();
+        private static bool s_XYZMode;

        private SerializedProperty _maskable;
        private SerializedProperty _scale3D;
@@ -62,10 +59,8 @@ namespace Coffee.UIExtensions
        private SerializedProperty _autoScalingMode;
        private SerializedProperty _useCustomView;
        private SerializedProperty _customViewSize;
-        private SerializedProperty _timeScaleMultiplier;
        private ReorderableList _ro;
        private bool _showMax;
-        private bool _is3DScaleMode;

        private static readonly HashSet<Shader> s_Shaders = new HashSet<Shader>();
 #if UNITY_2018 || UNITY_2019
@@ -87,10 +82,8 @@ namespace Coffee.UIExtensions
        /// <summary>
        /// This function is called when the object becomes enabled and active.
        /// </summary>
-        protected override void OnEnable()
+        private void OnEnable()
        {
-            base.OnEnable();
-
            _maskable = serializedObject.FindProperty("m_Maskable");
            _scale3D = serializedObject.FindProperty("m_Scale3D");
            _animatableProperties = serializedObject.FindProperty("m_AnimatableProperties");
@@ -101,7 +94,6 @@ namespace Coffee.UIExtensions
            _autoScalingMode = serializedObject.FindProperty("m_AutoScalingMode");
            _useCustomView = serializedObject.FindProperty("m_UseCustomView");
            _customViewSize = serializedObject.FindProperty("m_CustomViewSize");
-            _timeScaleMultiplier = serializedObject.FindProperty("m_TimeScaleMultiplier");

            var sp = serializedObject.FindProperty("m_Particles");
            _ro = new ReorderableList(sp.serializedObject, sp, true, true, true, true)
@@ -110,7 +102,7 @@ namespace Coffee.UIExtensions
                {
                    var ps = sp.GetArrayElementAtIndex(index).objectReferenceValue as ParticleSystem;
                    var materialCount = 0;
-                    if (ps != null && ps.TryGetComponent<ParticleSystemRenderer>(out var psr))
+                    if (ps && ps.TryGetComponent<ParticleSystemRenderer>(out var psr))
                    {
                        materialCount = psr.sharedMaterials.Length;
                    }
@@ -124,7 +116,7 @@ namespace Coffee.UIExtensions
                    var p = sp.GetArrayElementAtIndex(index);
                    EditorGUI.ObjectField(rect, p, GUIContent.none);
                    var ps = p.objectReferenceValue as ParticleSystem;
-                    if (ps == null || !ps.TryGetComponent<ParticleSystemRenderer>(out var psr)) return;
+                    if (!ps || !ps.TryGetComponent<ParticleSystemRenderer>(out var psr)) return;

                    rect.x += 15;
                    rect.width -= 15;
@@ -170,19 +162,6 @@ namespace Coffee.UIExtensions
                    uip.RefreshParticles(uip.particles);
                }
            }
-
-            // Initialize 3D scale mode.
-            _is3DScaleMode = State.instance.is3DScaleMode;
-            if (!_is3DScaleMode)
-            {
-                var x = _scale3D.FindPropertyRelative("x");
-                var y = _scale3D.FindPropertyRelative("y");
-                var z = _scale3D.FindPropertyRelative("z");
-                _is3DScaleMode = !Mathf.Approximately(x.floatValue, y.floatValue) ||
-                                 !Mathf.Approximately(y.floatValue, z.floatValue) ||
-                                 y.hasMultipleDifferentValues ||
-                                 z.hasMultipleDifferentValues;
-            }
        }

        /// <summary>
@@ -191,7 +170,7 @@ namespace Coffee.UIExtensions
        public override void OnInspectorGUI()
        {
            var current = target as UIParticle;
-            if (current == null) return;
+            if (!current) return;

            Profiler.BeginSample("(UIP:E) OnInspectorGUI");
            serializedObject.Update();
@@ -201,11 +180,7 @@ namespace Coffee.UIExtensions

            // Scale
            EditorGUI.BeginDisabledGroup(!_meshSharing.hasMultipleDifferentValues && _meshSharing.intValue == 4);
-            if (DrawFloatOrVector3Field(_scale3D, _is3DScaleMode) != _is3DScaleMode)
-            {
-                State.instance.is3DScaleMode = _is3DScaleMode = !_is3DScaleMode;
-            }
-
+            s_XYZMode = DrawFloatOrVector3Field(_scale3D, s_XYZMode);
            EditorGUI.EndDisabledGroup();

            // AnimatableProperties
@@ -246,9 +221,6 @@ namespace Coffee.UIExtensions
                _customViewSize.floatValue = Mathf.Max(0.1f, _customViewSize.floatValue);
            }

-            // Time Scale Multiplier
-            EditorGUILayout.PropertyField(_timeScaleMultiplier);
-
            // Target ParticleSystems.
            EditorGUI.BeginChangeCheck();
            _ro.DoLayoutList();
@@ -267,7 +239,7 @@ namespace Coffee.UIExtensions
            Profiler.BeginSample("(UIP:E) Non-UI built-in shader is not supported.");
            foreach (var mat in s_TempMaterials)
            {
-                if (mat == null || mat.shader == null) continue;
+                if (!mat || !mat.shader) continue;
                var shader = mat.shader;
                if (IsBuiltInObject(shader) && !shader.name.StartsWith("UI/"))
                {
@@ -286,7 +258,7 @@ namespace Coffee.UIExtensions
            {
                foreach (var mat in s_TempMaterials)
                {
-                    if (mat == null || mat.shader == null) continue;
+                    if (!mat || !mat.shader) continue;
                    var shader = mat.shader;
                    if (!s_Shaders.Add(shader)) continue;

@@ -345,6 +317,7 @@ namespace Coffee.UIExtensions
            }
 #endif
            Profiler.EndSample();
+            EditorApplication.delayCall += () => Profiler.enabled = false;
        }

        private static bool IsBuiltInObject(Object obj)
@@ -464,9 +437,7 @@ namespace Coffee.UIExtensions
        {
            if (!p || (ignoreCurrent && target == p)) return;

-            var cr = p.canvasRenderer;
            DestroyImmediate(p);
-            DestroyImmediate(cr);

 #if UNITY_2018_3_OR_NEWER
            var stage = PrefabStageUtility.GetCurrentPrefabStage();
--- a/Icons.meta
+++ b/Icons.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 7a55e246f37df405bac88eac692e3a86
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
--- a/Editor/UIParticleIcon.png
+++ b/Editor/UIParticleIcon.png
--- a/Editor/UIParticleIcon.png.meta
+++ b/Editor/UIParticleIcon.png.meta
--- a/README.md
+++ b/README.md
@@ -1,61 +1,28 @@
-# <img alt="UIParticleIcon" src="https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/d76e105e-a840-4f61-a1f6-8cf311c0812d" width="26"/> Particle Effect For UGUI (UI Particle) <!-- omit in toc -->
+# <img alt="UIParticleIcon" src="https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/d76e105e-a840-4f61-a1f6-8cf311c0812d" width="26"/> Particle Effect For UGUI (UI Particle)
+
+This package provides a component to render particle effects for uGUI in Unity 2018.2 or later.  
+The particle rendering is maskable and sortable, without the need for an extra Camera, RenderTexture, or Canvas.

 [![](https://img.shields.io/npm/v/com.coffee.ui-particle?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.coffee.ui-particle/)
-[![](https://img.shields.io/github/v/release/mob-sakai/ParticleEffectForUGUI)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
-[![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.md)  
+[![](https://img.shields.io/github/v/release/mob-sakai/ParticleEffectForUGUI?include_prereleases)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
+[![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.txt)  
 ![](https://img.shields.io/badge/Unity-2018.2+-57b9d3.svg?style=flat&logo=unity)
-![](https://img.shields.io/badge/uGUI_2.0_Ready-57b9d3.svg?style=flat)
-![](https://img.shields.io/badge/UPR%2FHDPR_Ready-57b9d3.svg?style=flat)  
 ![](https://github.com/mob-sakai/ParticleEffectForUGUI/actions/workflows/test.yml/badge.svg?branch=develop)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-orange.svg)](http://makeapullrequest.com)
-[![](https://img.shields.io/github/watchers/mob-sakai/ParticleEffectForUGUI.svg?style=social&label=Watch)](https://github.com/mob-sakai/ParticleEffectForUGUI/subscription)
 [![](https://img.shields.io/twitter/follow/mob_sakai.svg?label=Follow&style=social)](https://twitter.com/intent/follow?screen_name=mob_sakai)

-<< [📝 Description](#-description-) | [📌 Key Features](#-key-features) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
-
-## 📝 Description <!-- omit in toc -->
-
-![](https://user-images.githubusercontent.com/12690315/41771577-8da4b968-7650-11e8-9524-cd162c422d9d.gif)
-
-This package uses the new APIs `MeshBake/MeshTrailBake` (introduced in Unity 2018.2) to render particles through `CanvasRenderer`.  
-You can render, mask, and sort your `ParticleSystems` for UI without the need for an additional `Camera`, `RenderTexture`, or `Canvas`.
-
- [📌 Key Features](#-key-features)
- [🎮 Demo](#-demo)
- [⚙ Installation](#-installation)
-    - [Install via OpenUPM](#install-via-openupm)
-    - [Install via UPM (with Package Manager UI)](#install-via-upm-with-package-manager-ui)
-    - [Install via UPM (Manually)](#install-via-upm-manually)
-    - [Install as Embedded Package](#install-as-embedded-package)
- [🚀 Usage](#-usage)
-  - [Component: UIParticle](#component-uiparticle)
-  - [Basic Usage](#basic-usage)
-  - [Usage with Your Existing ParticleSystem Prefab](#usage-with-your-existing-particlesystem-prefab)
-  - [Usage with `Mask` or `RectMask2D` Component](#usage-with-mask-or-rectmask2d-component)
-  - [Usage with Script](#usage-with-script)
-  - [Component: UIParticleAttractor](#component-uiparticleattractor)
-  - [Project Settings](#project-settings)
- [🛠 Development Note](#-development-note)
-  - [Compares the Baking mesh approach with the conventional approach](#compares-the-baking-mesh-approach-with-the-conventional-approach)
-    - [Performance test results](#performance-test-results)
-  - [🔍 FAQ: Why Are My UIParticles Not Displayed Correctly?](#-faq-why-are-my-uiparticles-not-displayed-correctly)
-  - [Shader Limitation](#shader-limitation)
-    - [Built-in shaders are not supported](#built-in-shaders-are-not-supported)
-    - [(Unity 2018 or 2019) UV.zw components will be discarded](#unity-2018-or-2019-uvzw-components-will-be-discarded)
-    - [(Unity 2018 or 2019) Custom vertex streams](#unity-2018-or-2019-custom-vertex-streams)
-  - [Overheads](#overheads)
-  - [How to Make a Custom Shader to Support `Mask` and `RectMask2D` Component](#how-to-make-a-custom-shader-to-support-mask-and-rectmask2d-component)
- [🤝 Contributing](#-contributing)
-  - [Issues](#issues)
-  - [Pull Requests](#pull-requests)
-  - [Support](#support)
- [License](#license)
- [Author](#author)
- [See Also](#see-also)
+<< [📝 Description](#-description) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>

 <br><br>

-## 📌 Key Features
+## 📝 Description
+
+![Demo](https://user-images.githubusercontent.com/12690315/41771577-8da4b968-7650-11e8-9524-cd162c422d9d.gif)
+
+This package uses the new APIs `MeshBake/MeshTrailBake` (introduced in Unity 2018.2) to render particles through CanvasRenderer.  
+You can render, mask, and sort your ParticleSystems for UI without the need for an additional Camera, RenderTexture, or Canvas.
+
+### Key Features

 * **Easy to use:** The package is ready to use out of the box.
 * **Sortable:** Sort particle effects and other UI elements by sibling index.
@@ -116,16 +83,16 @@ _This package requires **Unity 2018.3 or later**._
  ```
 - To update the package, use Package Manager UI (`Window > Package Manager`) or run the following command with `@{version}`:
  ```
-  openupm add com.coffee.ui-particle@4.9.0
+  openupm add com.coffee.ui-particle@4.8.0
  ```

 #### Install via UPM (with Package Manager UI)

 - Click `Window > Package Manager` to open Package Manager UI.
 - Click `+ > Add package from git URL...` and input the repository URL: `https://github.com/mob-sakai/ParticleEffectForUGUI.git`  
-  ![](https://github.com/user-attachments/assets/f88f47ad-c606-44bd-9e86-ee3f72eac548)
+  ![](https://gist.github.com/assets/12690315/24af63ed-8a2e-483d-9023-7aa53d913330)
 - To update the package, change suffix `#{version}` to the target version.
-  - e.g. `https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.9.0`
+  - e.g. `https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.8.0`

 #### Install via UPM (Manually)

@@ -140,11 +107,11 @@ _This package requires **Unity 2018.3 or later**._
  ```

 - To update the package, change suffix `#{version}` to the target version.
-  - e.g. `"com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.9.0",`
+  - e.g. `"com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.8.0",`

 #### Install as Embedded Package

-1. Download a source code zip file from [Releases](https://github.com/mob-sakai/ParticleEffectForUGUI/releases) and extract it.
+1. Download a source code zip file from [Releases](https://github.com/mob-sakai/ParticleEffectForUGUI.git/releases) and extract it.
 2. Place it in your project's `Packages` directory.  
   ![](https://github.com/mob-sakai/mob-sakai/assets/12690315/0b7484b4-5fca-43b0-a9ef-e5dbd99bcdb4)
 - If you want to fix bugs or add features, install it as an embedded package.
@@ -152,13 +119,24 @@ _This package requires **Unity 2018.3 or later**._

 <br><br>

+## ⚙ Upgrading from 3.x/4.x to 5.x
+
+### Breaking Changes
+
+- The default value of `UIParticle.scale` has been changed from `10` to `1`.
+- `UIParticle` no longer inherits from `MaskableGraphic`.
+- Add project settings for UIParticle
+  - enableLinearToGamma: Enables LinearToGamma during mesh baking
+
+<br><br>
+
 ## 🚀 Usage

-### Component: UIParticle
+### UIParticle Component

 `UIParticle` controls the ParticleSystems that are attached to its own game objects and child game objects.

-![](https://github.com/user-attachments/assets/bc9eb783-afce-4102-ac61-aee9ea8d6f2f)
+![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/1cf5753b-33fc-4cef-91c3-413c515a954f)

 - **Maskable**: Does this graphic allow maskable.
 - **Scale**: Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.
@@ -180,7 +158,6 @@ _This package requires **Unity 2018.3 or later**._
  - **UIParticle:** UIParticle.scale will be adjusted.
 - **Use Custom View:** Use this if the particles are not displayed correctly due to min/max particle size.
  - **Custom view size:** Change the bake view size.
- **Time Scale Multiplier:** Time scale multiplier.
 - **Rendering Order**: The ParticleSystem list to be rendered. You can change the order and the materials.

 **NOTE:** Press the `Refresh` button to reconstruct the rendering order based on children ParticleSystem's sorting order
@@ -188,7 +165,7 @@ and z-position.

 <br><br>

-### Basic Usage
+#### Basic Usage

 1. Select `GameObject/UI/ParticleSystem` to create UIParticle with a ParticleSystem.
   ![particle](https://user-images.githubusercontent.com/12690315/95007361-cad0e880-0649-11eb-8835-f145d62c5977.png)
@@ -197,7 +174,7 @@ and z-position.

 <br>

-### Usage with Your Existing ParticleSystem Prefab
+#### With Your Existing ParticleSystem Prefab

 1. Select `GameObject/UI/ParticleSystem (Empty)` to create UIParticle.
   ![empty](https://user-images.githubusercontent.com/12690315/95007362-cb697f00-0649-11eb-8a09-29b0a13791e4.png)
@@ -206,19 +183,19 @@ and z-position.

 <br>

-### Usage with `Mask` or `RectMask2D` Component
+#### With `Mask` or `RectMask2D` Component

 If you want to mask particles, set a stencil-supported shader (such as `UI/UIAdditive`) to the material for
 ParticleSystem.
 If you use some custom shaders, see
-the [How to Make a Custom Shader to Support Mask/RectMask2D Component](#how-to-make-a-custom-shader-to-support-mask-and-rectmask2d-component)
+the [How to Make a Custom Shader to Support Mask/RectMask2D Component](#how-to-make-a-custom-shader-to-support-maskrectmask2d-component)
 section.

 ![](https://user-images.githubusercontent.com/12690315/95017591-3b512700-0695-11eb-864e-04166ea1809a.png)

 <br><br>

-### Usage with Script
+### Script usage

 ```cs
 // Instantiate ParticleSystem prefab with UIParticle on runtime.
@@ -237,14 +214,14 @@ uiParticle.Stop();

 <br><br>

-### Component: UIParticleAttractor
+### UIParticleAttractor component

 `UIParticleAttractor` attracts particles generated by the specified ParticleSystem.

 ![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/5c20ad73-4b9a-4f38-9cdc-119df5cce077)
 ![](https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif)

- **Particle Systems**: Attracts particles generated by the specified ParticleSystems.
+- **Particle System**: Attracts particles generated by the specified particle system.
 - **Destination Radius**: Once the particle is within the radius, the particle lifetime will become 0, and `OnAttracted`
  will be called.
 - **Delay Rate**: Delay to start attracting. It is a percentage of the particle's start lifetime.
@@ -258,14 +235,6 @@ uiParticle.Stop();

 <br><br>

-### Project Settings
-
-![](https://github.com/user-attachments/assets/befc7f34-fb47-4006-831a-eba79fda11ca)
-
- Click `Edit > Project Settings` to open the Project Settings window and then select `UI > UI Particle` category.
-
-<br><br>
-
 ## 🛠 Development Note

 ### Compares the Baking mesh approach with the conventional approach
@@ -397,7 +366,7 @@ When improving performance, keep the following in mind:
    - Consider a single material, atlasing the sprites, and using `Sprite` mode in the `Texture Sheet Animation` module
      in the ParticleSystem.

-### How to Make a Custom Shader to Support `Mask` and `RectMask2D` Component
+### How to Make a Custom Shader to Support Mask/RectMask2D Component

 <details>
 <summary>Shader tips</summary>
--- a/Runtime/Coffee.UIParticle.R.dll
+++ b/Runtime/Coffee.UIParticle.R.dll
--- a/Runtime/Coffee.UIParticle.R.dll.meta
+++ b/Runtime/Coffee.UIParticle.R.dll.meta
@@ -1,33 +0,0 @@
-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: 
--- a/Runtime/Internal/Extensions/ComponentExtensions.cs
+++ b/Runtime/Internal/Extensions/ComponentExtensions.cs
@@ -18,10 +18,10 @@ namespace Coffee.UIParticleInternal
        public static T[] GetComponentsInChildren<T>(this Component self, int depth)
            where T : Component
        {
-            var results = InternalListPool<T>.Rent();
+            var results = ListPool<T>.Rent();
            self.GetComponentsInChildren_Internal(results, depth);
            var array = results.ToArray();
-            InternalListPool<T>.Return(ref results);
+            ListPool<T>.Return(ref results);
            return array;
        }

@@ -38,7 +38,7 @@ namespace Coffee.UIParticleInternal
        private static void GetComponentsInChildren_Internal<T>(this Component self, List<T> results, int depth)
            where T : Component
        {
-            if (self == null || results == null || depth < 0) return;
+            if (!self || results == null || depth < 0) return;

            var tr = self.transform;
            if (tr.TryGetComponent<T>(out var t))
@@ -59,7 +59,7 @@ namespace Coffee.UIParticleInternal
        /// </summary>
        public static T GetOrAddComponent<T>(this Component self) where T : Component
        {
-            if (self == null) return null;
+            if (!self) return null;
            return self.TryGetComponent<T>(out var component)
                ? component
                : self.gameObject.AddComponent<T>();
@@ -134,39 +134,10 @@ namespace Coffee.UIParticleInternal
            Profiler.EndSample();
        }

-        /// <summary>
-        /// Add a component of a specific type to the children of a GameObject.
-        /// </summary>
-        public static void AddComponentOnChildren<T>(this Component self, bool includeSelf)
-            where T : Component
-        {
-            if (self == null) return;
-
-            Profiler.BeginSample("(COF)[ComponentExt] AddComponentOnChildren > Self");
-            if (includeSelf && !self.TryGetComponent<T>(out _))
-            {
-                self.gameObject.AddComponent<T>();
-            }
-
-            Profiler.EndSample();
-
-            Profiler.BeginSample("(COF)[ComponentExt] AddComponentOnChildren > Child");
-            var childCount = self.transform.childCount;
-            for (var i = 0; i < childCount; i++)
-            {
-                var child = self.transform.GetChild(i);
-                if (child.TryGetComponent<T>(out _)) continue;
-
-                child.gameObject.AddComponent<T>();
-            }
-
-            Profiler.EndSample();
-        }
-
 #if !UNITY_2021_2_OR_NEWER && !UNITY_2020_3_45 && !UNITY_2020_3_46 && !UNITY_2020_3_47 && !UNITY_2020_3_48
        public static T GetComponentInParent<T>(this Component self, bool includeInactive) where T : Component
        {
-            if (self == null) return null;
+            if (!self) return null;
            if (!includeInactive) return self.GetComponentInParent<T>();

            var current = self.transform;
@@ -184,9 +155,9 @@ namespace Coffee.UIParticleInternal
        /// <summary>
        /// Verify whether it can be converted to the specified component.
        /// </summary>
-            internal static bool CanConvertTo<T>(this Object context) where T : MonoBehaviour
+        internal static bool CanConvertTo<T>(this Object context) where T : MonoBehaviour
        {
-            return context != null && context.GetType() != typeof(T);
+            return context && context.GetType() != typeof(T);
        }

        /// <summary>
@@ -204,7 +175,7 @@ namespace Coffee.UIParticleInternal
            target.enabled = false;

            // Find MonoScript of the specified component.
-            foreach (var script in MonoImporter.GetAllRuntimeMonoScripts())
+            foreach (var script in Resources.FindObjectsOfTypeAll<MonoScript>())
            {
                if (script.GetClass() != typeof(T))
                {
--- a/Runtime/Internal/Extensions/ListExtensions.cs
+++ b/Runtime/Internal/Extensions/ListExtensions.cs
@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace Coffee.UIParticleInternal
+{
+    /// <summary>
+    /// Extension methods for Component class.
+    /// </summary>
+    internal static class ListExtensions
+    {
+        public static void RemoveAtFast<T>(this List<T> self, int index)
+        {
+            if (self == null) return;
+
+            var lastIndex = self.Count - 1;
+            self[index] = self[lastIndex];
+            self.RemoveAt(lastIndex);
+        }
+    }
+}
--- a/Runtime/Internal/Extensions/ListExtensions.cs.meta
+++ b/Runtime/Internal/Extensions/ListExtensions.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 833553390099d40c9b212823f0852c46
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
--- a/Runtime/Internal/Extensions/Misc.cs
+++ b/Runtime/Internal/Extensions/Misc.cs
@@ -0,0 +1,48 @@
+using System.Diagnostics;
+using UnityEditor;
+using UnityEngine;
+
+namespace Coffee.UIParticleInternal
+{
+    internal static class Misc
+    {
+        public static void Destroy(Object obj)
+        {
+            if (!obj) return;
+#if UNITY_EDITOR
+            if (!Application.isPlaying)
+            {
+                Object.DestroyImmediate(obj);
+            }
+            else
+#endif
+            {
+                Object.Destroy(obj);
+            }
+        }
+
+        public static void DestroyImmediate(Object obj)
+        {
+            if (!obj) return;
+#if UNITY_EDITOR
+            if (Application.isEditor)
+            {
+                Object.DestroyImmediate(obj);
+            }
+            else
+#endif
+            {
+                Object.Destroy(obj);
+            }
+        }
+
+        [Conditional("UNITY_EDITOR")]
+        public static void SetDirty(Object obj)
+        {
+#if UNITY_EDITOR
+            if (!obj) return;
+            EditorUtility.SetDirty(obj);
+#endif
+        }
+    }
+}
--- a/Runtime/Internal/Extensions/Misc.cs.meta
+++ b/Runtime/Internal/Extensions/Misc.cs.meta
@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 182319ecc315e4858b119764af0fbcb0
+guid: 39ed6a6b0a72e482488bd298b2ae762e
 MonoImporter:
  externalObjects: {}
  serializedVersion: 2
--- a/Runtime/Internal/Extensions/SpriteExtensions.cs
+++ b/Runtime/Internal/Extensions/SpriteExtensions.cs
@@ -17,25 +17,23 @@ namespace Coffee.UIParticleInternal
            Type.GetType("UnityEditor.Experimental.U2D.SpriteEditorExtension, UnityEditor")
            ?? Type.GetType("UnityEditor.U2D.SpriteEditorExtension, UnityEditor");

-        private static readonly Func<Sprite, Texture2D> s_GetActiveAtlasTextureMethod =
-            (Func<Sprite, Texture2D>)Delegate.CreateDelegate(typeof(Func<Sprite, Texture2D>),
-                s_SpriteEditorExtensionType
-                    .GetMethod("GetActiveAtlasTexture", BindingFlags.Static | BindingFlags.NonPublic));
+        private static readonly MethodInfo s_GetActiveAtlasTextureMethod = s_SpriteEditorExtensionType
+            .GetMethod("GetActiveAtlasTexture", BindingFlags.Static | BindingFlags.NonPublic);

-        private static readonly Func<Sprite, SpriteAtlas> s_GetActiveAtlasMethod =
-            (Func<Sprite, SpriteAtlas>)Delegate.CreateDelegate(typeof(Func<Sprite, SpriteAtlas>),
-                s_SpriteEditorExtensionType
-                    .GetMethod("GetActiveAtlas", BindingFlags.Static | BindingFlags.NonPublic));
+        private static readonly MethodInfo s_GetActiveAtlasMethod = s_SpriteEditorExtensionType
+            .GetMethod("GetActiveAtlas", BindingFlags.Static | BindingFlags.NonPublic);

        /// <summary>
        /// Get the actual texture of a sprite in play mode or edit mode.
        /// </summary>
        public static Texture2D GetActualTexture(this Sprite self)
        {
-            if (self == null) return null;
+            if (!self) return null;

-            var ret = s_GetActiveAtlasTextureMethod(self);
-            return ret != null ? ret : self.texture;
+            if (Application.isPlaying) return self.texture;
+
+            var ret = s_GetActiveAtlasTextureMethod.Invoke(null, new object[] { self }) as Texture2D;
+            return ret ? ret : self.texture;
        }

        /// <summary>
@@ -43,9 +41,9 @@ namespace Coffee.UIParticleInternal
        /// </summary>
        public static SpriteAtlas GetActiveAtlas(this Sprite self)
        {
-            if (self == null) return null;
+            if (!self) return null;

-            return s_GetActiveAtlasMethod(self);
+            return s_GetActiveAtlasMethod.Invoke(null, new object[] { self }) as SpriteAtlas;
        }
 #else
        /// <summary>
@@ -53,7 +51,7 @@ namespace Coffee.UIParticleInternal
        /// </summary>
        internal static Texture2D GetActualTexture(this Sprite self)
        {
-            return self != null ? self.texture : null;
+            return self ? self.texture : null;
        }
 #endif
    }
--- a/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs
+++ b/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs
@@ -1,9 +1,9 @@
 using System;
 using System.Linq;
+using System.Reflection;
 using UnityEngine;
 using Object = UnityEngine.Object;
 #if UNITY_EDITOR
-using System.IO;
 using UnityEditor;
 using UnityEditor.Build;
 using UnityEditor.Build.Reporting;
@@ -13,51 +13,41 @@ namespace Coffee.UIParticleInternal
 {
    public abstract class PreloadedProjectSettings : ScriptableObject
 #if UNITY_EDITOR
+        , IPreprocessBuildWithReport
    {
-        private class Postprocessor : AssetPostprocessor
+        int IOrderedCallback.callbackOrder => 0;
+
+        void IPreprocessBuildWithReport.OnPreprocessBuild(BuildReport report)
        {
-            private static void OnPostprocessAllAssets(string[] _, string[] __, string[] ___, string[] ____)
-            {
-                Initialize();
-            }
-        }
-
-        private class PreprocessBuildWithReport : IPreprocessBuildWithReport
-        {
-            int IOrderedCallback.callbackOrder => 0;
-
-            void IPreprocessBuildWithReport.OnPreprocessBuild(BuildReport report)
-            {
-                Initialize();
-            }
+            Initialize();
        }

+        [InitializeOnLoadMethod]
+        [InitializeOnEnterPlayMode]
        private static void Initialize()
        {
+            const BindingFlags flags = BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy;
            foreach (var t in TypeCache.GetTypesDerivedFrom(typeof(PreloadedProjectSettings<>)))
            {
                var defaultSettings = GetDefaultSettings(t);
-                if (defaultSettings == null)
+                if (!defaultSettings)
                {
-                    // When create a new instance, automatically set it as default settings.
-                    defaultSettings = CreateInstance(t) as PreloadedProjectSettings;
+                    defaultSettings = t.GetProperty("instance", flags)
+                        ?.GetValue(null, null) as PreloadedProjectSettings;
                    SetDefaultSettings(defaultSettings);
                }
                else if (GetPreloadedSettings(t).Length != 1)
                {
                    SetDefaultSettings(defaultSettings);
                }
-
-                if (defaultSettings != null)
-                {
-                    defaultSettings.OnInitialize();
-                }
            }
+
+            EditorApplication.QueuePlayerLoopUpdate();
        }

        protected static string GetDefaultName(Type type, bool nicify)
        {
-            var typeName = type.Name;
+            var typeName = type.Name.Replace("ProjectSettings", "");
            return nicify
                ? ObjectNames.NicifyVariableName(typeName)
                : typeName;
@@ -66,7 +56,7 @@ namespace Coffee.UIParticleInternal
        private static Object[] GetPreloadedSettings(Type type)
        {
            return PlayerSettings.GetPreloadedAssets()
-                .Where(x => x != null && x.GetType() == type)
+                .Where(x => x && x.GetType() == type)
                .ToArray();
        }

@@ -76,13 +66,11 @@ namespace Coffee.UIParticleInternal
                   ?? AssetDatabase.FindAssets($"t:{nameof(PreloadedProjectSettings)}")
                       .Select(AssetDatabase.GUIDToAssetPath)
                       .Select(AssetDatabase.LoadAssetAtPath<PreloadedProjectSettings>)
-                       .FirstOrDefault(x => x != null && x.GetType() == type);
+                       .FirstOrDefault(x => x && x.GetType() == type);
        }

        protected static void SetDefaultSettings(PreloadedProjectSettings asset)
        {
-            if (asset == null) return;
-
            var type = asset.GetType();
            if (string.IsNullOrEmpty(AssetDatabase.GetAssetPath(asset)))
            {
@@ -93,17 +81,13 @@ namespace Coffee.UIParticleInternal

                var assetPath = $"Assets/ProjectSettings/{GetDefaultName(type, false)}.asset";
                assetPath = AssetDatabase.GenerateUniqueAssetPath(assetPath);
-                if (!File.Exists(assetPath))
-                {
-                    AssetDatabase.CreateAsset(asset, assetPath);
-                    asset.OnCreateAsset();
-                }
+                AssetDatabase.CreateAsset(asset, assetPath);
            }

            var preloadedAssets = PlayerSettings.GetPreloadedAssets();
            var projectSettings = GetPreloadedSettings(type);
            PlayerSettings.SetPreloadedAssets(preloadedAssets
-                .Where(x => x != null)
+                .Where(x => x)
                .Except(projectSettings.Except(new[] { asset }))
                .Append(asset)
                .Distinct()
@@ -111,20 +95,13 @@ namespace Coffee.UIParticleInternal

            AssetDatabase.Refresh();
        }
-
-        protected virtual void OnCreateAsset()
-        {
-        }
-
-        protected virtual void OnInitialize()
-        {
-        }
    }
 #else
    {
    }
 #endif

+
    public abstract class PreloadedProjectSettings<T> : PreloadedProjectSettings
        where T : PreloadedProjectSettings<T>
    {
@@ -133,19 +110,17 @@ namespace Coffee.UIParticleInternal
 #if UNITY_EDITOR
        private string _jsonText;

-        public static bool hasInstance => s_Instance != null;
-
        public static T instance
        {
            get
            {
-                if (s_Instance != null) return s_Instance;
+                if (s_Instance) return s_Instance;

                s_Instance = GetDefaultSettings(typeof(T)) as T;
-                if (s_Instance != null) return s_Instance;
+                if (s_Instance) return s_Instance;

                s_Instance = CreateInstance<T>();
-                if (s_Instance == null)
+                if (!s_Instance)
                {
                    s_Instance = null;
                    return s_Instance;
@@ -174,7 +149,7 @@ namespace Coffee.UIParticleInternal
            }
        }
 #else
-    public static T instance => s_Instance != null ? s_Instance : s_Instance = CreateInstance<T>();
+        public static T instance => s_Instance ? s_Instance : s_Instance = CreateInstance<T>();
 #endif

        /// <summary>
@@ -183,7 +158,7 @@ namespace Coffee.UIParticleInternal
        protected virtual void OnEnable()
        {
 #if UNITY_EDITOR
-            var isDefaultSettings = s_Instance == null || s_Instance == this || GetDefaultSettings(typeof(T)) == this;
+            var isDefaultSettings = !s_Instance || s_Instance == this || GetDefaultSettings(typeof(T)) == this;
            if (!isDefaultSettings)
            {
                DestroyImmediate(this, true);
@@ -193,7 +168,7 @@ namespace Coffee.UIParticleInternal
            EditorApplication.playModeStateChanged += OnPlayModeStateChanged;
 #endif

-            if (s_Instance != null) return;
+            if (s_Instance) return;
            s_Instance = this as T;
        }

@@ -222,7 +197,7 @@ namespace Coffee.UIParticleInternal

            public override void OnGUI(string searchContext)
            {
-                if (_target == null)
+                if (!_target)
                {
                    if (_editor)
                    {
--- a/Runtime/Internal/Utilities/FastAction.cs
+++ b/Runtime/Internal/Utilities/FastAction.cs
@@ -10,9 +10,8 @@ namespace Coffee.UIParticleInternal
    /// </summary>
    internal class FastActionBase<T>
    {
-        private static readonly InternalObjectPool<LinkedListNode<T>> s_NodePool =
-            new InternalObjectPool<LinkedListNode<T>>(() => new LinkedListNode<T>(default), _ => true,
-                x => x.Value = default);
+        private static readonly ObjectPool<LinkedListNode<T>> s_NodePool =
+            new ObjectPool<LinkedListNode<T>>(() => new LinkedListNode<T>(default), _ => true, x => x.Value = default);

        private readonly LinkedList<T> _delegates = new LinkedList<T>();

--- a/Runtime/Internal/Utilities/FrameCache.cs
+++ b/Runtime/Internal/Utilities/FrameCache.cs
@@ -46,6 +46,7 @@ namespace Coffee.UIParticleInternal
            GetFrameCache<T>().Set((key1.GetHashCode(), key2.GetHashCode()), result);
        }

+
        /// <summary>
        /// Sets a value in the frame cache with a specified key.
        /// </summary>
--- a/Runtime/Internal/Utilities/Logging.cs
+++ b/Runtime/Internal/Utilities/Logging.cs
@@ -42,40 +42,44 @@ namespace Coffee.UIParticleInternal
 #endif
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
        public static void LogIf(bool enable, object tag, object message, Object context = null)
        {
            if (!enable) return;
-            Log_Internal(LogType.Log, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Log, tag, message, context ? context : tag as Object);
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
        public static void Log(object tag, object message, Object context = null)
        {
-            Log_Internal(LogType.Log, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Log, tag, message, context ? context : tag as Object);
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
        public static void LogWarning(object tag, object message, Object context = null)
        {
-            Log_Internal(LogType.Warning, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Warning, tag, message, context ? context : tag as Object);
        }

        public static void LogError(object tag, object message, Object context = null)
        {
 #if ENABLE_COFFEE_LOGGER
-            Log_Internal(LogType.Error, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Error, tag, message, context ? context : tag as Object);
 #else
            Debug.LogError($"{tag}: {message}", context);
 #endif
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
@@ -119,6 +123,7 @@ namespace Coffee.UIParticleInternal
 #endif
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
@@ -135,9 +140,6 @@ namespace Coffee.UIParticleInternal

                switch (tag)
                {
-                    case string name:
-                        sb.Append(name);
-                        break;
                    case Type type:
                        AppendType(sb, type);
                        break;
@@ -164,6 +166,7 @@ namespace Coffee.UIParticleInternal
 #endif
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
@@ -202,6 +205,7 @@ namespace Coffee.UIParticleInternal
 #endif
        }

+
 #if !ENABLE_COFFEE_LOGGER
        [Conditional(k_DisableSymbol)]
 #endif
--- 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)]
-        public static void Clear()
+        private static void Clear()
        {
            s_Repository.Clear();
        }
@@ -55,6 +55,7 @@ namespace Coffee.UIParticleInternal
            Profiler.EndSample();
        }

+
        /// <summary>
        /// Adds or retrieves a cached material based on the hash.
        /// </summary>
--- a/Runtime/Internal/Utilities/Misc.cs
+++ b/Runtime/Internal/Utilities/Misc.cs
@@ -1,132 +0,0 @@
-using System;
-using System.Diagnostics;
-using UnityEditor;
-using UnityEngine;
-using Object = UnityEngine.Object;
-#if UNITY_EDITOR
-using System.IO;
-using System.Linq;
-using System.Reflection;
-#if UNITY_2021_2_OR_NEWER
-using UnityEditor.SceneManagement;
-#else
-using UnityEditor.Experimental.SceneManagement;
-#endif
-#endif
-
-namespace Coffee.UIParticleInternal
-{
-    internal static class Misc
-    {
-        public static T[] FindObjectsOfType<T>() where T : Object
-        {
-#if UNITY_2023_1_OR_NEWER
-            return Object.FindObjectsByType<T>(FindObjectsInactive.Include, FindObjectsSortMode.None);
-#else
-            return Object.FindObjectsOfType<T>();
-#endif
-        }
-
-        public static void Destroy(Object obj)
-        {
-            if (obj == null) return;
-#if UNITY_EDITOR
-            if (!Application.isPlaying)
-            {
-                Object.DestroyImmediate(obj);
-            }
-            else
-#endif
-            {
-                Object.Destroy(obj);
-            }
-        }
-
-        public static void DestroyImmediate(Object obj)
-        {
-            if (obj == null) return;
-#if UNITY_EDITOR
-            if (Application.isEditor)
-            {
-                Object.DestroyImmediate(obj);
-            }
-            else
-#endif
-            {
-                Object.Destroy(obj);
-            }
-        }
-
-        [Conditional("UNITY_EDITOR")]
-        public static void SetDirty(Object obj)
-        {
-#if UNITY_EDITOR
-            if (obj == null) return;
-            EditorUtility.SetDirty(obj);
-#endif
-        }
-
-#if UNITY_EDITOR
-        public static T[] GetAllComponentsInPrefabStage<T>() where T : Component
-        {
-            var prefabStage = PrefabStageUtility.GetCurrentPrefabStage();
-            if (prefabStage == null) return Array.Empty<T>();
-
-            return prefabStage.prefabContentsRoot.GetComponentsInChildren<T>(true);
-        }
-
-        public static bool isBatchOrBuilding => Application.isBatchMode || BuildPipeline.isBuildingPlayer;
-#endif
-
-        [Conditional("UNITY_EDITOR")]
-        public static void QueuePlayerLoopUpdate()
-        {
-#if UNITY_EDITOR
-            if (!EditorApplication.isPlaying)
-            {
-                EditorApplication.QueuePlayerLoopUpdate();
-            }
-#endif
-        }
-    }
-
-#if !UNITY_2021_2_OR_NEWER
-    [AttributeUsage(AttributeTargets.Class)]
-    [Conditional("UNITY_EDITOR")]
-    internal class IconAttribute : Attribute
-    {
-        private readonly string _path;
-
-        public IconAttribute(string path)
-        {
-            _path = path;
-        }
-
-#if UNITY_EDITOR
-        private static Action<Object, Texture2D> s_SetIconForObject = typeof(EditorGUIUtility)
-            .GetMethod("SetIconForObject", BindingFlags.Static | BindingFlags.NonPublic)
-            .CreateDelegate(typeof(Action<Object, Texture2D>), null) as Action<Object, Texture2D>;
-
-        [InitializeOnLoadMethod]
-        private static void InitializeOnLoadMethod()
-        {
-            if (Misc.isBatchOrBuilding) return;
-
-            var types = TypeCache.GetTypesWithAttribute<IconAttribute>();
-            var scripts = MonoImporter.GetAllRuntimeMonoScripts();
-            foreach (var type in types)
-            {
-                var script = scripts.FirstOrDefault(x => x.GetClass() == type);
-                if (script == null) continue;
-
-                var path = type.GetCustomAttribute<IconAttribute>()?._path;
-                var icon = AssetDatabase.LoadAssetAtPath<Texture2D>(path);
-                if (icon == null) continue;
-
-                s_SetIconForObject(script, icon);
-            }
-        }
-#endif
-    }
-#endif
-}
--- a/Runtime/Internal/Utilities/ObjectPool.cs
+++ b/Runtime/Internal/Utilities/ObjectPool.cs
@@ -6,58 +6,15 @@ namespace Coffee.UIParticleInternal
    /// <summary>
    /// Object pool.
    /// </summary>
-    internal class InternalObjectPool<T> where T : class
+    internal class ObjectPool<T>
    {
-#if UNITY_2021_1_OR_NEWER
-        private readonly Predicate<T> _onValid; // Delegate for checking if instances are valid
-        private readonly UnityEngine.Pool.ObjectPool<T> _pool;
-
-        public InternalObjectPool(Func<T> onCreate, Predicate<T> onValid, Action<T> onReturn)
-        {
-            _pool = new UnityEngine.Pool.ObjectPool<T>(onCreate, null, onReturn);
-            _onValid = onValid;
-        }
-
-        /// <summary>
-        /// Rent an instance from the pool.
-        /// When you no longer need it, return it with <see cref="Return" />.
-        /// </summary>
-        public T Rent()
-        {
-            while (0 < _pool.CountInactive)
-            {
-                var instance = _pool.Get();
-                if (_onValid(instance))
-                {
-                    return instance;
-                }
-            }
-
-            // If there are no instances in the pool, create a new one.
-            Logging.Log(this, $"A new instance is created (pooled: {_pool.CountInactive}, created: {_pool.CountAll}).");
-            return _pool.Get();
-        }
-
-        /// <summary>
-        /// Return an instance to the pool and assign null.
-        /// Be sure to return the instance obtained with <see cref="Rent" /> with this method.
-        /// </summary>
-        public void Return(ref T instance)
-        {
-            if (instance == null) return; // Ignore if already pooled or null.
-
-            _pool.Release(instance);
-            Logging.Log(this, $"An instance is released (pooled: {_pool.CountInactive}, created: {_pool.CountAll}).");
-            instance = default; // Set the reference to null.
-        }
-#else
        private readonly Func<T> _onCreate; // Delegate for creating instances
        private readonly Action<T> _onReturn; // Delegate for returning instances to the pool
        private readonly Predicate<T> _onValid; // Delegate for checking if instances are valid
        private readonly Stack<T> _pool = new Stack<T>(32); // Object pool
        private int _count; // Total count of created instances

-        public InternalObjectPool(Func<T> onCreate, Predicate<T> onValid, Action<T> onReturn)
+        public ObjectPool(Func<T> onCreate, Predicate<T> onValid, Action<T> onReturn)
        {
            _onCreate = onCreate;
            _onValid = onValid;
@@ -97,40 +54,15 @@ namespace Coffee.UIParticleInternal
            Logging.Log(this, $"An instance is released (pooled: {_pool.Count}, created: {_count}).");
            instance = default; // Set the reference to null.
        }
-#endif
    }

    /// <summary>
    /// Object pool for <see cref="List{T}" />.
    /// </summary>
-    internal static class InternalListPool<T>
+    internal static class ListPool<T>
    {
-#if UNITY_2021_1_OR_NEWER
-        /// <summary>
-        /// Rent an instance from the pool.
-        /// When you no longer need it, return it with <see cref="Return" />.
-        /// </summary>
-        public static List<T> Rent()
-        {
-            return UnityEngine.Pool.ListPool<T>.Get();
-        }
-
-        /// <summary>
-        /// Return an instance to the pool and assign null.
-        /// Be sure to return the instance obtained with <see cref="Rent" /> with this method.
-        /// </summary>
-        public static void Return(ref List<T> toRelease)
-        {
-            if (toRelease != null)
-            {
-                UnityEngine.Pool.ListPool<T>.Release(toRelease);
-            }
-
-            toRelease = null;
-        }
-#else
-        private static readonly InternalObjectPool<List<T>> s_ListPool =
-            new InternalObjectPool<List<T>>(() => new List<T>(), _ => true, x => x.Clear());
+        private static readonly ObjectPool<List<T>> s_ListPool =
+            new ObjectPool<List<T>>(() => new List<T>(), _ => true, x => x.Clear());

        /// <summary>
        /// Rent an instance from the pool.
@@ -149,6 +81,5 @@ namespace Coffee.UIParticleInternal
        {
            s_ListPool.Return(ref toRelease);
        }
-#endif
    }
 }
--- a/Runtime/Internal/Utilities/ObjectRepository.cs
+++ b/Runtime/Internal/Utilities/ObjectRepository.cs
@@ -8,11 +8,10 @@ namespace Coffee.UIParticleInternal
 {
    internal class ObjectRepository<T> where T : Object
    {
-        private readonly Dictionary<Hash128, Entry> _cache = new Dictionary<Hash128, Entry>(8);
-        private readonly Dictionary<int, Hash128> _objectKey = new Dictionary<int, Hash128>(8);
+        private readonly List<Entry> _cache = new List<Entry>();
        private readonly string _name;
        private readonly Action<T> _onRelease;
-        private readonly Stack<Entry> _pool = new Stack<Entry>(8);
+        private readonly Stack<Entry> _pool = new Stack<Entry>();

        public ObjectRepository(Action<T> onRelease = null)
        {
@@ -37,33 +36,40 @@ namespace Coffee.UIParticleInternal
            {
                _onRelease = onRelease;
            }
-
-            for (var i = 0; i < 8; i++)
-            {
-                _pool.Push(new Entry());
-            }
        }

        public int count => _cache.Count;

        public void Clear()
        {
-            foreach (var kv in _cache)
+            for (var i = 0; i < _cache.Count; i++)
            {
-                var entry = kv.Value;
+                var entry = _cache[i];
                if (entry == null) continue;

                entry.Release(_onRelease);
-                _pool.Push(entry);
            }

            _cache.Clear();
-            _objectKey.Clear();
        }

        public bool Valid(Hash128 hash, T obj)
        {
-            return _cache.TryGetValue(hash, out var entry) && entry.storedObject == obj;
+            // Find existing entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] Valid > Find existing entry");
+            for (var i = 0; i < _cache.Count; ++i)
+            {
+                var entry = _cache[i];
+                if (entry.hash != hash) continue;
+                Profiler.EndSample();
+
+                // Existing entry found.
+                return entry.storedObject == obj;
+            }
+
+            Profiler.EndSample();
+
+            return false;
        }

        /// <summary>
@@ -71,69 +77,82 @@ namespace Coffee.UIParticleInternal
        /// </summary>
        public void Get(Hash128 hash, ref T obj, Func<T> onCreate)
        {
-            if (GetFromCache(hash, ref obj)) return;
-            Add(hash, ref obj, onCreate());
+            // Find existing entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Find existing entry");
+            for (var i = 0; i < _cache.Count; ++i)
+            {
+                var entry = _cache[i];
+                if (entry.hash != hash) continue;
+
+                // Existing entry found.
+                if (entry.storedObject != obj)
+                {
+                    // if the object is different, release the old one.
+                    Release(ref obj);
+                    ++entry.reference;
+                    obj = entry.storedObject;
+                    Logging.Log(_name, $"Get(#{count}): {entry}");
+                }
+
+                Profiler.EndSample();
+                return;
+            }
+
+            Profiler.EndSample();
+
+            // Create new entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Create new entry");
+            var newEntry = 0 < _pool.Count ? _pool.Pop() : new Entry();
+            newEntry.storedObject = onCreate();
+            newEntry.hash = hash;
+            newEntry.reference = 1;
+            _cache.Add(newEntry);
+            Logging.Log(_name, $"Get(#{count}): {newEntry}");
+
+            Release(ref obj);
+            obj = newEntry.storedObject;
+            Profiler.EndSample();
        }

        /// <summary>
        /// Adds or retrieves a cached object based on the hash.
        /// </summary>
        public void Get<TS>(Hash128 hash, ref T obj, Func<TS, T> onCreate, TS source)
-        {
-            if (GetFromCache(hash, ref obj)) return;
-            Add(hash, ref obj, onCreate(source));
-        }
-
-        private bool GetFromCache(Hash128 hash, ref T obj)
        {
            // Find existing entry.
-            Profiler.BeginSample("(COF)[ObjectRepository] GetFromCache");
-            if (_cache.TryGetValue(hash, out var entry))
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Find existing entry");
+            for (var i = 0; i < _cache.Count; ++i)
            {
-                if (entry.storedObject == null)
-                {
-                    Release(ref entry.storedObject);
-                    Profiler.EndSample();
-                    return false;
-                }
+                var entry = _cache[i];
+                if (entry.hash != hash) continue;

+                // Existing entry found.
                if (entry.storedObject != obj)
                {
                    // if the object is different, release the old one.
                    Release(ref obj);
                    ++entry.reference;
                    obj = entry.storedObject;
-                    Logging.Log(_name, $"Get(total#{count}): {entry}");
+                    Logging.Log(_name, $"Get(#{count}): {entry}");
                }

                Profiler.EndSample();
-                return true;
-            }
-
-            Profiler.EndSample();
-            return false;
-        }
-
-        private void Add(Hash128 hash, ref T obj, T newObject)
-        {
-            if (newObject == null)
-            {
-                Release(ref obj);
-                obj = newObject;
                return;
            }

-            // Create and add a new entry.
-            Profiler.BeginSample("(COF)[ObjectRepository] Add");
+            Profiler.EndSample();
+
+            // Create new entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Create new entry");
            var newEntry = 0 < _pool.Count ? _pool.Pop() : new Entry();
-            newEntry.storedObject = newObject;
+            newEntry.storedObject = onCreate(source);
            newEntry.hash = hash;
            newEntry.reference = 1;
-            _cache[hash] = newEntry;
-            _objectKey[newObject.GetInstanceID()] = hash;
-            Logging.Log(_name, $"<color=#03c700>Add</color>(total#{count}): {newEntry}");
+            _cache.Add(newEntry);
+            Logging.Log(_name, $"Get(#{count}): {newEntry}");
+
            Release(ref obj);
-            obj = newObject;
+            obj = newEntry.storedObject;
            Profiler.EndSample();
        }

@@ -144,45 +163,35 @@ namespace Coffee.UIParticleInternal
        {
            if (ReferenceEquals(obj, null)) return;

-            // Find and release the entry.
            Profiler.BeginSample("(COF)[ObjectRepository] Release");
-            var id = obj.GetInstanceID();
-            if (_objectKey.TryGetValue(id, out var hash)
-                && _cache.TryGetValue(hash, out var entry))
+            for (var i = 0; i < _cache.Count; i++)
            {
-                entry.reference--;
-                if (entry.reference <= 0 || entry.storedObject == null)
+                var entry = _cache[i];
+
+                if (entry.storedObject != obj)
                {
-                    Remove(entry);
+                    continue;
                }
-                else
+
+                if (--entry.reference <= 0)
                {
-                    Logging.Log(_name, $"Release(total#{_cache.Count}): {entry}");
+                    Profiler.BeginSample("(COF)[ObjectRepository] Release > RemoveAt");
+                    _cache.RemoveAtFast(i);
+                    Logging.Log(_name, $"Release(#{_cache.Count}): {entry}");
+                    entry.Release(_onRelease);
+                    _pool.Push(entry);
+                    Profiler.EndSample();
+                    break;
                }
-            }
-            else
-            {
-                Logging.Log(_name, $"Release(total#{_cache.Count}): <color=red>Already released: {obj}</color>");
+
+                Logging.Log(_name, $"Release(#{count}): {entry}");
+                break;
            }

            obj = null;
            Profiler.EndSample();
        }

-        private void Remove(Entry entry)
-        {
-            if (ReferenceEquals(entry, null)) return;
-
-            Profiler.BeginSample("(COF)[ObjectRepository] Remove");
-            _cache.Remove(entry.hash);
-            _objectKey.Remove(entry.storedObject.GetInstanceID());
-            _pool.Push(entry);
-            entry.reference = 0;
-            Logging.Log(_name, $"<color=#f29e03>Remove</color>(total#{_cache.Count}): {entry}");
-            entry.Release(_onRelease);
-            Profiler.EndSample();
-        }
-
        private class Entry
        {
            public Hash128 hash;
@@ -192,7 +201,7 @@ namespace Coffee.UIParticleInternal
            public void Release(Action<T> onRelease)
            {
                reference = 0;
-                if (storedObject != null)
+                if (storedObject)
                {
                    onRelease?.Invoke(storedObject);
                }
@@ -202,7 +211,7 @@ namespace Coffee.UIParticleInternal

            public override string ToString()
            {
-                return $"h{(uint)hash.GetHashCode()} (refs#{reference}), {storedObject}";
+                return $"h{(uint)hash.GetHashCode()} (#{reference}), {storedObject}";
            }
        }
    }
--- a/Runtime/Internal/Utilities/UIExtraCallbacks.cs
+++ b/Runtime/Internal/Utilities/UIExtraCallbacks.cs
@@ -14,8 +14,6 @@ namespace Coffee.UIParticleInternal
        private static readonly FastAction s_AfterCanvasRebuildAction = new FastAction();
        private static readonly FastAction s_LateAfterCanvasRebuildAction = new FastAction();
        private static readonly FastAction s_BeforeCanvasRebuildAction = new FastAction();
-        private static readonly FastAction s_OnScreenSizeChangedAction = new FastAction();
-        private static Vector2Int s_LastScreenSize;

        static UIExtraCallbacks()
        {
@@ -50,15 +48,6 @@ namespace Coffee.UIParticleInternal
            remove => s_AfterCanvasRebuildAction.Remove(value);
        }

-        /// <summary>
-        /// Event that occurs when the screen size changes.
-        /// </summary>
-        public static event Action onScreenSizeChanged
-        {
-            add => s_OnScreenSizeChangedAction.Add(value);
-            remove => s_OnScreenSizeChangedAction.Remove(value);
-        }
-
        /// <summary>
        /// Initializes the UIExtraCallbacks to ensure proper event handling.
        /// </summary>
@@ -88,17 +77,6 @@ namespace Coffee.UIParticleInternal
        /// </summary>
        private static void OnBeforeCanvasRebuild()
        {
-            var screenSize = new Vector2Int(Screen.width, Screen.height);
-            if (s_LastScreenSize != screenSize)
-            {
-                if (s_LastScreenSize != default)
-                {
-                    s_OnScreenSizeChangedAction.Invoke();
-                }
-
-                s_LastScreenSize = screenSize;
-            }
-
            s_BeforeCanvasRebuildAction.Invoke();
            InitializeAfterCanvasRebuild();
        }
--- a/Runtime/UIParticle.cs
+++ b/Runtime/UIParticle.cs
@@ -3,26 +3,22 @@ using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using Coffee.UIParticleInternal;
 using UnityEngine;
+using UnityEngine.EventSystems;
 using UnityEngine.Rendering;
 using UnityEngine.Serialization;
-using UnityEngine.UI;
 using Random = UnityEngine.Random;

 [assembly: InternalsVisibleTo("Coffee.UIParticle.Editor")]
-[assembly: InternalsVisibleTo("Coffee.UIParticle.Editor.Tests")]
-[assembly: InternalsVisibleTo("Coffee.UIParticle.PerformanceDemo")]
-[assembly: InternalsVisibleTo("Coffee.UIParticle.Demo")]

 namespace Coffee.UIExtensions
 {
    /// <summary>
    /// Render maskable and sortable particle effect ,without Camera, RenderTexture or Canvas.
    /// </summary>
-    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
    [ExecuteAlways]
    [RequireComponent(typeof(RectTransform))]
    [RequireComponent(typeof(CanvasRenderer))]
-    public class UIParticle : MaskableGraphic, ISerializationCallbackReceiver
+    public class UIParticle : UIBehaviour, ISerializationCallbackReceiver
    {
        public enum AutoScalingMode
        {
@@ -64,7 +60,7 @@ namespace Coffee.UIExtensions

        [Tooltip("Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.")]
        [SerializeField]
-        private Vector3 m_Scale3D = new Vector3(10, 10, 10);
+        private Vector3 m_Scale3D = new Vector3(1, 1, 1);

        [Tooltip("If you want to update material properties (e.g. _MainTex_ST, _Color) in AnimationClip, " +
                 "use this to mark as animatable.")]
@@ -122,23 +118,47 @@ namespace Coffee.UIExtensions
        private float m_CustomViewSize = 10;

        [SerializeField]
-        [Tooltip("Time scale multiplier.")]
-        private float m_TimeScaleMultiplier = 1;
+        private bool m_Maskable = true;

        private readonly List<UIParticleRenderer> _renderers = new List<UIParticleRenderer>();
        private Camera _bakeCamera;
+        private Canvas _canvas;
        private int _groupId;
        private bool _isScaleStored;
        private Vector3 _storedScale;
        private DrivenRectTransformTracker _tracker;

-        /// <summary>
-        /// Should this graphic be considered a target for ray-casting?
-        /// </summary>
-        public override bool raycastTarget
+        public RectTransform rectTransform => transform as RectTransform;
+
+        public Canvas canvas
        {
-            get => false;
-            set { }
+            get
+            {
+                if (_canvas) return _canvas;
+
+                var tr = transform;
+                while (tr && !_canvas)
+                {
+                    if (tr.TryGetComponent(out _canvas)) return _canvas;
+                    tr = tr.parent;
+                }
+
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Does this graphic allow masking.
+        /// </summary>
+        public bool maskable
+        {
+            get => m_Maskable;
+            set
+            {
+                if (value == m_Maskable) return;
+                m_Maskable = value;
+                UpdateRendererMaterial();
+            }
        }

        /// <summary>
@@ -263,15 +283,6 @@ namespace Coffee.UIExtensions
            set => m_CustomViewSize = Mathf.Max(0.1f, value);
        }

-        /// <summary>
-        /// Time scale multiplier.
-        /// </summary>
-        public float timeScaleMultiplier
-        {
-            get => m_TimeScaleMultiplier;
-            set => m_TimeScaleMultiplier = value;
-        }
-
        internal bool useMeshSharing => m_MeshSharing != MeshSharing.None;

        internal bool isPrimary =>
@@ -324,15 +335,15 @@ namespace Coffee.UIExtensions

        public Vector3 parentScale { get; private set; }

-        public Vector3 canvasScale { get; private set; }
+        private Vector3 canvasScale { get; set; }

        protected override void OnEnable()
        {
            _isScaleStored = false;
            ResetGroupId();
            UIParticleUpdater.Register(this);
-            RegisterDirtyMaterialCallback(UpdateRendererMaterial);

+            //
            if (0 < particles.Count)
            {
                RefreshParticles(particles);
@@ -342,7 +353,7 @@ namespace Coffee.UIExtensions
                RefreshParticles();
            }

-            base.OnEnable();
+            UpdateRendererMaterial();
        }

        /// <summary>
@@ -359,9 +370,15 @@ namespace Coffee.UIExtensions
            _isScaleStored = false;
            UIParticleUpdater.Unregister(this);
            _renderers.ForEach(r => r.Reset());
-            UnregisterDirtyMaterialCallback(UpdateRendererMaterial);
+            _canvas = null;
+        }

-            base.OnDisable();
+        /// <summary>
+        /// Called when the state of the parent Canvas is changed.
+        /// </summary>
+        protected override void OnCanvasHierarchyChanged()
+        {
+            _canvas = null;
        }

        /// <summary>
@@ -371,6 +388,14 @@ namespace Coffee.UIExtensions
        {
        }

+        /// <summary>
+        /// This function is called when a direct or indirect parent of the transform of the GameObject has changed.
+        /// </summary>
+        protected override void OnTransformParentChanged()
+        {
+            _canvas = null;
+        }
+
        void ISerializationCallbackReceiver.OnBeforeSerialize()
        {
        }
@@ -471,7 +496,7 @@ namespace Coffee.UIExtensions
            for (var i = 0; i < _renderers.Count; i++)
            {
                var r = _renderers[i];
-                if (r == null || r.material == null) continue;
+                if (!r || !r.material) continue;
                result.Add(r.material);
            }
        }
@@ -489,7 +514,7 @@ namespace Coffee.UIExtensions
        /// </summary>
        public void SetParticleSystemInstance(GameObject instance, bool destroyOldParticles)
        {
-            if (instance == null) return;
+            if (!instance) return;

            var childCount = transform.childCount;
            for (var i = 0; i < childCount; i++)
@@ -518,7 +543,7 @@ namespace Coffee.UIExtensions
        /// </summary>
        public void SetParticleSystemPrefab(GameObject prefab)
        {
-            if (prefab == null) return;
+            if (!prefab) return;

            SetParticleSystemInstance(Instantiate(prefab.gameObject), true);
        }
@@ -538,14 +563,12 @@ namespace Coffee.UIExtensions
        /// </summary>
        private void RefreshParticles(GameObject root)
        {
-            if (root == null) return;
+            if (!root) return;
            root.GetComponentsInChildren(true, particles);
            for (var i = particles.Count - 1; 0 <= i; i--)
            {
                var ps = particles[i];
-                if (!ps
-                    || ps.gameObject.CompareTag("EditorOnly") // Ignore "EditorOnly" tagged ParticleSystems.
-                    || ps.GetComponentInParent<UIParticle>(true) != this) // Ignore ParticleSystems that are not under this UIParticle.
+                if (!ps || ps.GetComponentInParent<UIParticle>(true) != this)
                {
                    particles.RemoveAt(i);
                }
@@ -593,15 +616,13 @@ namespace Coffee.UIExtensions
            for (var i = 0; i < particleSystems.Count; i++)
            {
                var ps = particleSystems[i];
-                if (ps == null) continue;
-
-                var mainEmitter = ps.GetMainEmitter(particleSystems);
-                GetRenderer(j++).Set(this, ps, false, mainEmitter);
+                if (!ps) continue;
+                GetRenderer(j++).Set(this, ps, false);

                // If the trail is enabled, set it additionally.
                if (ps.trails.enabled)
                {
-                    GetRenderer(j++).Set(this, ps, true, mainEmitter);
+                    GetRenderer(j++).Set(this, ps, true);
                }
            }
        }
@@ -644,7 +665,7 @@ namespace Coffee.UIExtensions
            for (var i = 0; i < _renderers.Count; i++)
            {
                var r = _renderers[i];
-                if (r != null) continue;
+                if (r) continue;

                RefreshParticles(particles);
                break;
@@ -654,7 +675,7 @@ namespace Coffee.UIExtensions
            for (var i = 0; i < _renderers.Count; i++)
            {
                var r = _renderers[i];
-                if (r == null) continue;
+                if (!r) continue;

                r.UpdateMesh(bakeCamera);
            }
@@ -667,23 +688,12 @@ namespace Coffee.UIExtensions
                : Random.Range(m_GroupId, m_GroupMaxId + 1);
        }

-        protected override void UpdateMaterial()
-        {
-        }
-
-        /// <summary>
-        /// Call to update the geometry of the Graphic onto the CanvasRenderer.
-        /// </summary>
-        protected override void UpdateGeometry()
-        {
-        }
-
        private void UpdateRendererMaterial()
        {
            for (var i = 0; i < _renderers.Count; i++)
            {
                var r = _renderers[i];
-                if (r == null) continue;
+                if (!r) continue;
                r.maskable = maskable;
                r.SetMaterialDirty();
            }
@@ -696,7 +706,7 @@ namespace Coffee.UIExtensions
                _renderers.Add(UIParticleRenderer.AddRenderer(this, index));
            }

-            if (_renderers[index] == null)
+            if (!_renderers[index])
            {
                _renderers[index] = UIParticleRenderer.AddRenderer(this, index);
            }
@@ -706,13 +716,13 @@ namespace Coffee.UIExtensions

        private Camera GetBakeCamera()
        {
-            if (canvas == null) return Camera.main;
+            if (!canvas) return Camera.main;
            if (!useCustomView && canvas.renderMode != RenderMode.ScreenSpaceOverlay && canvas.rootCanvas.worldCamera)
            {
                return canvas.rootCanvas.worldCamera;
            }

-            if (_bakeCamera != null)
+            if (_bakeCamera)
            {
                _bakeCamera.orthographicSize = useCustomView ? customViewSize : 10;
                return _bakeCamera;
@@ -731,7 +741,7 @@ namespace Coffee.UIExtensions
            }

            // Create baking camera.
-            if (_bakeCamera == null)
+            if (!_bakeCamera)
            {
                var go = new GameObject("[generated] UIParticle BakingCamera");
                go.SetActive(false);
@@ -753,7 +763,7 @@ namespace Coffee.UIExtensions
            _bakeCamera.useOcclusionCulling = false;

            _bakeCamera.gameObject.SetActive(false);
-            _bakeCamera.gameObject.hideFlags = UIParticleProjectSettings.globalHideFlags;
+            _bakeCamera.gameObject.hideFlags = HideFlags.HideAndDontSave;

            return _bakeCamera;
        }
--- a/Runtime/UIParticle.cs.meta
+++ b/Runtime/UIParticle.cs.meta
@@ -5,7 +5,7 @@ MonoImporter:
  serializedVersion: 2
  defaultReferences: []
  executionOrder: 0
-  icon: {instanceID: 0}
+  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
  userData: 
  assetBundleName: 
  assetBundleVariant: 
--- a/Runtime/UIParticleAttractor.cs
+++ b/Runtime/UIParticleAttractor.cs
@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using Coffee.UIParticleInternal;
 using UnityEngine;
 using UnityEngine.Events;
@@ -7,7 +6,7 @@ using UnityEngine.Events;
 namespace Coffee.UIExtensions
 {
    [ExecuteAlways]
-    public class UIParticleAttractor : MonoBehaviour, ISerializationCallbackReceiver
+    public class UIParticleAttractor : MonoBehaviour
    {
        public enum Movement
        {
@@ -23,12 +22,8 @@ namespace Coffee.UIExtensions
        }

        [SerializeField]
-        [HideInInspector]
        private ParticleSystem m_ParticleSystem;

-        [SerializeField]
-        private List<ParticleSystem> m_ParticleSystems = new List<ParticleSystem>();
-
        [Range(0.1f, 10f)]
        [SerializeField]
        private float m_DestinationRadius = 1;
@@ -50,7 +45,7 @@ namespace Coffee.UIExtensions
        [SerializeField]
        private UnityEvent m_OnAttracted;

-        private List<UIParticle> _uiParticles = new List<UIParticle>();
+        private UIParticle _uiParticle;

        public float destinationRadius
        {
@@ -89,46 +84,25 @@ namespace Coffee.UIExtensions
        }

        /// <summary>
-        /// The target ParticleSystems to attract. Use <see cref="AddParticleSystem"/> and
-        /// <see cref="RemoveParticleSystem"/> to modify the list.
+        /// The target ParticleSystem to attract.
        /// </summary>
-        public IReadOnlyList<ParticleSystem> particleSystems => m_ParticleSystems;
-
-        public void AddParticleSystem(ParticleSystem ps)
+#if UNITY_EDITOR
+        public new ParticleSystem particleSystem
+#else
+        public ParticleSystem particleSystem
+#endif
        {
-            if (m_ParticleSystems == null)
+            get => m_ParticleSystem;
+            set
            {
-                m_ParticleSystems = new List<ParticleSystem>();
+                m_ParticleSystem = value;
+                ApplyParticleSystem();
            }
-
-            var i = m_ParticleSystems.IndexOf(ps);
-            if (0 <= i) return; // Already added: skip
-
-            m_ParticleSystems.Add(ps);
-            _uiParticles.Clear();
-        }
-
-        public void RemoveParticleSystem(ParticleSystem ps)
-        {
-            if (m_ParticleSystems == null)
-            {
-                return;
-            }
-
-            var i = m_ParticleSystems.IndexOf(ps);
-            if (i < 0) return; // Not found. skip
-
-            m_ParticleSystems.RemoveAt(i);
-            _uiParticles.Clear();
-        }
-
-        private void Awake()
-        {
-            UpgradeIfNeeded();
        }

        private void OnEnable()
        {
+            ApplyParticleSystem();
            UIParticleUpdater.Register(this);
        }

@@ -139,96 +113,85 @@ namespace Coffee.UIExtensions

        private void OnDestroy()
        {
-            _uiParticles = null;
-            m_ParticleSystems = null;
+            _uiParticle = null;
+            m_ParticleSystem = null;
        }

        internal void Attract()
        {
-            // Collect UIParticle if needed (same size as m_ParticleSystems)
-            CollectUIParticlesIfNeeded();
+            if (m_ParticleSystem == null) return;

-            for (var particleIndex = 0; particleIndex < m_ParticleSystems.Count; particleIndex++)
+            var count = m_ParticleSystem.particleCount;
+            if (count == 0) return;
+
+            var particles = ParticleSystemExtensions.GetParticleArray(count);
+            m_ParticleSystem.GetParticles(particles, count);
+
+            var dstPos = GetDestinationPosition();
+            for (var i = 0; i < count; i++)
            {
-                var particleSystem = m_ParticleSystems[particleIndex];
-
-                // Skip: The ParticleSystem is not active
-                if (particleSystem == null || !particleSystem.gameObject.activeInHierarchy) continue;
-
-                // Skip: No active particles
-                var count = particleSystem.particleCount;
-                if (count == 0) continue;
-
-                var particles = ParticleSystemExtensions.GetParticleArray(count);
-                particleSystem.GetParticles(particles, count);
-
-                var uiParticle = _uiParticles[particleIndex];
-                var dstPos = GetDestinationPosition(uiParticle, particleSystem);
-                for (var i = 0; i < count; i++)
+                // Attracted
+                var p = particles[i];
+                if (0f < p.remainingLifetime && Vector3.Distance(p.position, dstPos) < m_DestinationRadius)
                {
-                    // Attracted
-                    var p = particles[i];
-                    if (0f < p.remainingLifetime && Vector3.Distance(p.position, dstPos) < m_DestinationRadius)
+                    p.remainingLifetime = 0f;
+                    particles[i] = p;
+
+                    if (m_OnAttracted != null)
                    {
-                        p.remainingLifetime = 0f;
-                        particles[i] = p;
-
-                        if (m_OnAttracted != null)
+                        try
                        {
-                            try
-                            {
-                                m_OnAttracted.Invoke();
-                            }
-                            catch (Exception e)
-                            {
-                                Debug.LogException(e);
-                            }
+                            m_OnAttracted.Invoke();
+                        }
+                        catch (Exception e)
+                        {
+                            Debug.LogException(e);
                        }
-
-                        continue;
                    }

-                    // Calc attracting time
-                    var delayTime = p.startLifetime * m_DelayRate;
-                    var duration = p.startLifetime - delayTime;
-                    var time = Mathf.Max(0, p.startLifetime - p.remainingLifetime - delayTime);
-
-                    // Delay
-                    if (time <= 0) continue;
-
-                    // Attract
-                    p.position = GetAttractedPosition(p.position, dstPos, duration, time);
-                    p.velocity *= 0.5f;
-                    particles[i] = p;
+                    continue;
                }

-                particleSystem.SetParticles(particles, count);
+                // Calc attracting time
+                var delayTime = p.startLifetime * m_DelayRate;
+                var duration = p.startLifetime - delayTime;
+                var time = Mathf.Max(0, p.startLifetime - p.remainingLifetime - delayTime);
+
+                // Delay
+                if (time <= 0) continue;
+
+                // Attract
+                p.position = GetAttractedPosition(p.position, dstPos, duration, time);
+                p.velocity *= 0.5f;
+                particles[i] = p;
            }
+
+            m_ParticleSystem.SetParticles(particles, count);
        }

-        private Vector3 GetDestinationPosition(UIParticle uiParticle, ParticleSystem particleSystem)
+        private Vector3 GetDestinationPosition()
        {
-            var isUI = uiParticle != null && uiParticle.enabled;
-            var psPos = particleSystem.transform.position;
+            var isUI = _uiParticle && _uiParticle.enabled;
+            var psPos = m_ParticleSystem.transform.position;
            var attractorPos = transform.position;
            var dstPos = attractorPos;
-            var isLocalSpace = particleSystem.IsLocalSpace();
+            var isLocalSpace = m_ParticleSystem.IsLocalSpace();

            if (isLocalSpace)
            {
-                dstPos = particleSystem.transform.InverseTransformPoint(dstPos);
+                dstPos = m_ParticleSystem.transform.InverseTransformPoint(dstPos);
            }

            if (isUI)
            {
-                var inverseScale = uiParticle.parentScale.Inverse();
-                var scale3d = uiParticle.scale3DForCalc;
+                var inverseScale = _uiParticle.parentScale.Inverse();
+                var scale3d = _uiParticle.scale3DForCalc;
                dstPos = dstPos.GetScaled(inverseScale, scale3d.Inverse());

                // Relative mode
-                if (uiParticle.positionMode == UIParticle.PositionMode.Relative)
+                if (_uiParticle.positionMode == UIParticle.PositionMode.Relative)
                {
-                    var diff = uiParticle.transform.position - psPos;
+                    var diff = _uiParticle.transform.position - psPos;
                    diff.Scale(scale3d - inverseScale);
                    diff.Scale(scale3d.Inverse());
                    dstPos += diff;
@@ -274,59 +237,25 @@ namespace Coffee.UIExtensions
            return Vector3.MoveTowards(current, target, speed);
        }

-        private void CollectUIParticlesIfNeeded()
+        private void ApplyParticleSystem()
        {
-            if (m_ParticleSystems.Count == 0 || _uiParticles.Count != 0) return;
-
-            // Expand capacity
-            if (_uiParticles.Capacity < m_ParticleSystems.Capacity)
+            _uiParticle = null;
+            if (m_ParticleSystem == null)
            {
-                _uiParticles.Capacity = m_ParticleSystems.Capacity;
-            }
-
-            // Find UIParticle that controls the ParticleSystem
-            for (var i = 0; i < m_ParticleSystems.Count; i++)
-            {
-                var ps = m_ParticleSystems[i];
-                if (ps == null)
-                {
-                    _uiParticles.Add(null);
-                    continue;
-                }
-
-                var uiParticle = ps.GetComponentInParent<UIParticle>(true);
-                _uiParticles.Add(uiParticle.particles.Contains(ps) ? uiParticle : null);
-            }
-        }
-
 #if UNITY_EDITOR
-        private void OnValidate()
-        {
-            _uiParticles.Clear();
-        }
+                if (Application.isPlaying)
 #endif
-
-        void ISerializationCallbackReceiver.OnBeforeSerialize()
-        {
-            UpgradeIfNeeded();
-        }
-
-        void ISerializationCallbackReceiver.OnAfterDeserialize()
-        {
-        }
-
-        private void UpgradeIfNeeded()
-        {
-            // Multiple ParticleSystems support: from 'm_ParticleSystem' to 'm_ParticleSystems'
-            if (m_ParticleSystem != null)
-            {
-                if (!m_ParticleSystems.Contains(m_ParticleSystem))
                {
-                    m_ParticleSystems.Add(m_ParticleSystem);
+                    Debug.LogError("No particle system attached to particle attractor script", this);
                }

-                m_ParticleSystem = null;
-                Debug.Log($"Upgraded!");
+                return;
+            }
+
+            _uiParticle = m_ParticleSystem.GetComponentInParent<UIParticle>(true);
+            if (_uiParticle && !_uiParticle.particles.Contains(m_ParticleSystem))
+            {
+                _uiParticle = null;
            }
        }
    }
--- a/Runtime/UIParticleAttractor.cs.meta
+++ b/Runtime/UIParticleAttractor.cs.meta
@@ -5,7 +5,7 @@ MonoImporter:
  serializedVersion: 2
  defaultReferences: []
  executionOrder: 0
-  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
+  icon: {instanceID: 0}
  userData: 
  assetBundleName: 
  assetBundleVariant: 
--- a/Runtime/UIParticleProjectSettings.cs
+++ b/Runtime/UIParticleProjectSettings.cs
@@ -17,18 +17,6 @@ namespace Coffee.UIExtensions
            set => instance.m_EnableLinearToGamma = value;
        }

-
-        [Header("Editor")]
-        [Tooltip("Hide the automatically generated objects.\n" +
-                 "  - UIParticleRenderer\n" +
-                 "  - UIParticle BakingCamera")]
-        [SerializeField]
-        private bool m_HideGeneratedObjects = true;
-
-        public static HideFlags globalHideFlags => instance.m_HideGeneratedObjects
-            ? HideFlags.DontSave | HideFlags.NotEditable | HideFlags.HideInHierarchy | HideFlags.HideInInspector
-            : HideFlags.DontSave | HideFlags.NotEditable;
-
 #if UNITY_EDITOR
        [SettingsProvider]
        private static SettingsProvider CreateSettingsProvider()
--- a/Runtime/UIParticleProjectSettings.cs.meta
+++ b/Runtime/UIParticleProjectSettings.cs.meta
@@ -5,7 +5,7 @@ MonoImporter:
  serializedVersion: 2
  defaultReferences: []
  executionOrder: 0
-  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
+  icon: {instanceID: 0}
  userData: 
  assetBundleName: 
  assetBundleVariant: 
--- a/Runtime/UIParticleRenderer.cs
+++ b/Runtime/UIParticleRenderer.cs
@@ -4,6 +4,7 @@
 #elif UNITY_2022_3_OR_NEWER
 #define PS_BAKE_API_V2
 #endif
+
 using System;
 using System.Collections.Generic;
 using Coffee.UIParticleInternal;
@@ -15,7 +16,6 @@ using UnityEngine.UI;

 namespace Coffee.UIExtensions
 {
-    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
    [ExecuteAlways]
    [RequireComponent(typeof(RectTransform))]
    [RequireComponent(typeof(CanvasRenderer))]
@@ -41,7 +41,6 @@ namespace Coffee.UIExtensions
        private Vector2Int _prevScreenSize;
        private bool _preWarm;
        private ParticleSystemRenderer _renderer;
-        private ParticleSystem _mainEmitter;

        public override Texture mainTexture => _isTrail ? null : _particleSystem.GetTextureForSprite();

@@ -55,7 +54,7 @@ namespace Coffee.UIExtensions
                s_Corners[1] = transform.TransformPoint(_lastBounds.min.x, _lastBounds.max.y, 0);
                s_Corners[2] = transform.TransformPoint(_lastBounds.max.x, _lastBounds.max.y, 0);
                s_Corners[3] = transform.TransformPoint(_lastBounds.max.x, _lastBounds.min.y, 0);
-                if (canvas != null)
+                if (canvas)
                {
                    var worldToLocalMatrix = canvas.rootCanvas.transform.worldToLocalMatrix;
                    for (var i = 0; i < 4; ++i)
@@ -95,7 +94,7 @@ namespace Coffee.UIExtensions
        {
            get
            {
-                if (_materialForRendering == null)
+                if (!_materialForRendering)
                {
                    _materialForRendering = base.materialForRendering;
                }
@@ -106,7 +105,7 @@ namespace Coffee.UIExtensions

        public void Reset(int index = -1)
        {
-            if (_renderer != null)
+            if (_renderer)
            {
                _renderer.enabled = true;
            }
@@ -114,14 +113,13 @@ namespace Coffee.UIExtensions
            _parent = null;
            _particleSystem = null;
            _renderer = null;
-            _mainEmitter = null;
            if (0 <= index)
            {
                _index = index;
            }

            //_emitter = null;
-            if (isActiveAndEnabled)
+            if (this && isActiveAndEnabled)
            {
                material = null;
                canvasRenderer.Clear();
@@ -139,8 +137,7 @@ namespace Coffee.UIExtensions
        {
            base.OnEnable();

-            hideFlags = UIParticleProjectSettings.globalHideFlags;
-            if (s_CombineInstances[0].mesh == null)
+            if (!s_CombineInstances[0].mesh)
            {
                s_CombineInstances[0].mesh = new Mesh
                {
@@ -164,7 +161,7 @@ namespace Coffee.UIExtensions
            // Create renderer object.
            var go = new GameObject("[generated] UIParticleRenderer", typeof(UIParticleRenderer))
            {
-                hideFlags = UIParticleProjectSettings.globalHideFlags,
+                hideFlags = HideFlags.HideAndDontSave,
                layer = parent.gameObject.layer
            };

@@ -204,6 +201,7 @@ namespace Coffee.UIExtensions
                return modifiedMaterial;
            }

+            //
            var hash = new Hash128(
                modifiedMaterial ? (uint)modifiedMaterial.GetInstanceID() : 0,
                texture ? (uint)texture.GetInstanceID() : 0,
@@ -226,7 +224,7 @@ namespace Coffee.UIExtensions
            return _modifiedMaterial;
        }

-        public void Set(UIParticle parent, ParticleSystem ps, bool isTrail, ParticleSystem mainEmitter)
+        public void Set(UIParticle parent, ParticleSystem ps, bool isTrail)
        {
            _parent = parent;
            maskable = parent.maskable;
@@ -249,7 +247,10 @@ namespace Coffee.UIExtensions

            ps.TryGetComponent(out _renderer);
            _renderer.enabled = false;
+
+            //_emitter = emitter;
            _isTrail = isTrail;
+
            _renderer.GetSharedMaterials(s_Materials);
            material = s_Materials[isTrail ? 1 : 0];
            s_Materials.Clear();
@@ -266,7 +267,6 @@ namespace Coffee.UIExtensions
            _prevScreenSize = new Vector2Int(Screen.width, Screen.height);
            _prevCanvasScale = canvas ? canvas.scaleFactor : 1f;
            _delay = true;
-            _mainEmitter = mainEmitter;

            canvasRenderer.SetTexture(null);

@@ -283,6 +283,10 @@ namespace Coffee.UIExtensions
                || !transform.lossyScale.GetScaled(_parent.scale3DForCalc).IsVisible() // Scale is not visible.
                || (!_particleSystem.IsAlive() && !_particleSystem.isPlaying) // No particle.
                || (_isTrail && !_particleSystem.trails.enabled) // Trail, but it is not enabled.
+#if UNITY_2018_3_OR_NEWER
+                || canvasRenderer.GetInheritedAlpha() <
+                0.01f // #102: Do not bake particle system to mesh when the alpha is zero.
+#endif
            )
            {
                Profiler.BeginSample("[UIParticleRenderer] Clear Mesh");
@@ -294,31 +298,13 @@ namespace Coffee.UIExtensions
                return;
            }

-            // Reset custom data.
-            // var customData = _particleSystem.customData;
-            // if (!customData.enabled || customData.GetMode(ParticleSystemCustomData.Custom1) == ParticleSystemCustomDataMode.Disabled)
-            // {
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 0, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 1, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 2, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 3, 0);
-            // }
-            //
-            // if (!customData.enabled || customData.GetMode(ParticleSystemCustomData.Custom2) == ParticleSystemCustomDataMode.Disabled)
-            // {
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 0, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 1, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 2, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 3, 0);
-            // }
-
            var main = _particleSystem.main;
            var scale = GetWorldScale();
            var psPos = _particleSystem.transform.position;

            // Simulate particles.
            Profiler.BeginSample("[UIParticle] Bake Mesh > Simulate Particles");
-            if (!_isTrail && _parent.canSimulate && !_mainEmitter)
+            if (!_isTrail && _parent.canSimulate)
            {
 #if UNITY_EDITOR
                if (!Application.isPlaying)
@@ -329,13 +315,6 @@ namespace Coffee.UIExtensions
 #endif
                {
                    ResolveResolutionChange(psPos, scale);
-
-                    // fix: second and subsequent bursts not displayed when world simulation and non-looping. (#326)
-                    if (!_particleSystem.IsLocalSpace() && !main.loop && _particleSystem.time == 0)
-                    {
-                        _delay = true;
-                    }
-
                    Simulate(scale, _parent.isPaused || _delay);

                    if (_delay && !_parent.isPaused)
@@ -443,16 +422,17 @@ namespace Coffee.UIExtensions
                    workerMesh.LinearToGamma();
                }

-                var components = InternalListPool<Component>.Rent();
+                var components = ListPool<Component>.Rent();
                GetComponents(typeof(IMeshModifier), components);
+
+#pragma warning disable CS0618 // Type or member is obsolete
                for (var i = 0; i < components.Count; i++)
                {
-#pragma warning disable CS0618 // Type or member is obsolete
                    ((IMeshModifier)components[i]).ModifyMesh(workerMesh);
-#pragma warning restore CS0618 // Type or member is obsolete
                }
+#pragma warning restore CS0618 // Type or member is obsolete

-                InternalListPool<Component>.Return(ref components);
+                ListPool<Component>.Return(ref components);
            }

            Profiler.EndSample();
@@ -464,7 +444,7 @@ namespace Coffee.UIExtensions

            // Get grouped renderers.
            Profiler.BeginSample("[UIParticleRenderer] Set Mesh");
-            var renderers = InternalListPool<UIParticleRenderer>.Rent();
+            var renderers = ListPool<UIParticleRenderer>.Rent();
            if (_parent.useMeshSharing)
            {
                UIParticleUpdater.GetGroupedRenderers(_parent.groupId, _index, renderers);
@@ -481,7 +461,7 @@ namespace Coffee.UIExtensions
                r.canvasRenderer.SetMaterial(materialForRendering, 0);
            }

-            InternalListPool<UIParticleRenderer>.Return(ref renderers);
+            ListPool<UIParticleRenderer>.Return(ref renderers);

            if (_parent.canRender)
            {
@@ -564,30 +544,6 @@ namespace Coffee.UIExtensions
                    return Matrix4x4.Translate(psPos)
                           * Matrix4x4.Scale(scale);
                case ParticleSystemSimulationSpace.World:
-                    if (_isTrail)
-                    {
-                        return Matrix4x4.Translate(psPos)
-                               * Matrix4x4.Scale(scale)
-                               * Matrix4x4.Translate(-psPos);
-                    }
-
-                    if (_mainEmitter)
-                    {
-                        if (_mainEmitter.IsLocalSpace())
-                        {
-                            return Matrix4x4.Translate(psPos)
-                                   * Matrix4x4.Scale(scale)
-                                   * Matrix4x4.Translate(-psPos);
-                        }
-                        else
-                        {
-                            psPos = _particleSystem.transform.position - _mainEmitter.transform.position;
-                            return Matrix4x4.Translate(psPos)
-                                   * Matrix4x4.Scale(scale)
-                                   * Matrix4x4.Translate(-psPos);
-                        }
-                    }
-
                    return Matrix4x4.Scale(scale);
                case ParticleSystemSimulationSpace.Custom:
                    return Matrix4x4.Translate(_particleSystem.main.customSimulationSpace.position.GetScaled(scale))
@@ -650,7 +606,6 @@ namespace Coffee.UIExtensions
                : main.useUnscaledTime
                    ? Time.unscaledDeltaTime
                    : Time.deltaTime;
-            deltaTime *= _parent.timeScaleMultiplier;

            // Pre-warm:
            if (0 < deltaTime && _preWarm)
@@ -731,7 +686,7 @@ namespace Coffee.UIExtensions
            if (s_Mpb.isEmpty) return;

            // #41: Copy the value from MaterialPropertyBlock to CanvasRenderer
-            if (materialForRendering == null) return;
+            if (!materialForRendering) return;

            for (var i = 0; i < _parent.m_AnimatableProperties.Length; i++)
            {
--- a/Runtime/UIParticleUpdater.cs
+++ b/Runtime/UIParticleUpdater.cs
@@ -16,50 +16,37 @@ namespace Coffee.UIExtensions

        public static void Register(UIParticle particle)
        {
-            if (particle == null) return;
+            if (!particle) return;
            s_ActiveParticles.Add(particle);
        }

        public static void Unregister(UIParticle particle)
        {
-            if (particle == null) return;
+            if (!particle) return;
            s_ActiveParticles.Remove(particle);
        }

        public static void Register(UIParticleAttractor attractor)
        {
-            if (attractor == null) return;
+            if (!attractor) return;
            s_ActiveAttractors.Add(attractor);
        }

        public static void Unregister(UIParticleAttractor attractor)
        {
-            if (attractor == null) return;
+            if (!attractor) return;
            s_ActiveAttractors.Remove(attractor);
        }

 #if UNITY_EDITOR
        [InitializeOnLoadMethod]
-        private static void InitializeOnLoad()
-        {
-            UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
-
-            EditorApplication.playModeStateChanged += state =>
-            {
-                UIExtraCallbacks.onAfterCanvasRebuild -= Refresh;
-                if (state == PlayModeStateChange.EnteredEditMode || state == PlayModeStateChange.EnteredPlayMode)
-                {
-                    UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
-                }
-            };
-        }
 #else
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
+#endif
        private static void InitializeOnLoad()
        {
            UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
        }
-#endif

        private static void Refresh()
        {
@@ -71,7 +58,7 @@ namespace Coffee.UIExtensions
            for (var i = 0; i < s_ActiveParticles.Count; i++)
            {
                var uip = s_ActiveParticles[i];
-                if (uip == null || uip.canvas == null || !uip.isPrimary || !s_UpdatedGroupIds.Add(uip.groupId)) continue;
+                if (!uip || !uip.canvas || !uip.isPrimary || !s_UpdatedGroupIds.Add(uip.groupId)) continue;

                uip.UpdateTransformScale();
                uip.UpdateRenderers();
@@ -81,7 +68,7 @@ namespace Coffee.UIExtensions
            for (var i = 0; i < s_ActiveParticles.Count; i++)
            {
                var uip = s_ActiveParticles[i];
-                if (uip == null || uip.canvas == null) continue;
+                if (!uip || !uip.canvas) continue;

                uip.UpdateTransformScale();

@@ -125,7 +112,7 @@ namespace Coffee.UIExtensions
                var uip = s_ActiveParticles[i];
                if (!uip.useMeshSharing || uip.groupId != groupId) continue;
                if (uip.isPrimary) return uip;
-                if (primary == null && uip.canSimulate) primary = uip;
+                if (!primary && uip.canSimulate) primary = uip;
            }

            return primary;
--- a/Runtime/Utilities/ParticleSystemExtensions.cs
+++ b/Runtime/Utilities/ParticleSystemExtensions.cs
@@ -13,7 +13,11 @@ namespace Coffee.UIParticleInternal
        {
            if (s_TmpParticles.Length < size)
            {
-                size = Mathf.NextPowerOfTwo(size);
+                while (s_TmpParticles.Length < size)
+                {
+                    size = Mathf.NextPowerOfTwo(size);
+                }
+
                s_TmpParticles = new ParticleSystem.Particle[size];
            }

@@ -84,11 +88,11 @@ namespace Coffee.UIParticleInternal
                var bRenderer = b.GetComponent<ParticleSystemRenderer>();

                // Render queue: ascending
-                var aMat = aRenderer.sharedMaterial != null ? aRenderer.sharedMaterial : aRenderer.trailMaterial;
-                var bMat = bRenderer.sharedMaterial != null ? bRenderer.sharedMaterial : bRenderer.trailMaterial;
-                if (aMat == null && bMat == null) return 0;
-                if (aMat == null) return -1;
-                if (bMat == null) return 1;
+                var aMat = aRenderer.sharedMaterial ? aRenderer.sharedMaterial : aRenderer.trailMaterial;
+                var bMat = bRenderer.sharedMaterial ? bRenderer.sharedMaterial : bRenderer.trailMaterial;
+                if (!aMat && !bMat) return 0;
+                if (!aMat) return -1;
+                if (!bMat) return 1;

                if (sortByMaterial)
                {
@@ -142,7 +146,7 @@ namespace Coffee.UIParticleInternal

        public static Texture2D GetTextureForSprite(this ParticleSystem self)
        {
-            if (self == null) return null;
+            if (!self) return null;

            // Get sprite's texture.
            var tsaModule = self.textureSheetAnimation;
@@ -151,7 +155,7 @@ namespace Coffee.UIParticleInternal
            for (var i = 0; i < tsaModule.spriteCount; i++)
            {
                var sprite = tsaModule.GetSprite(i);
-                if (sprite == null) continue;
+                if (!sprite) continue;

                return sprite.GetActualTexture();
            }
@@ -163,38 +167,9 @@ namespace Coffee.UIParticleInternal
        {
            foreach (var p in self)
            {
-                if (p == null) continue;
+                if (!p) continue;
                action.Invoke(p);
            }
        }
-
-        public static ParticleSystem GetMainEmitter(this ParticleSystem self, List<ParticleSystem> list)
-        {
-            if (self == null || list == null || list.Count == 0) return null;
-
-            for (var i = 0; i < list.Count; i++)
-            {
-                var parent = list[i];
-                if (parent != self && IsSubEmitterOf(self, parent)) return parent;
-            }
-
-            return null;
-        }
-
-        public static bool IsSubEmitterOf(this ParticleSystem self, ParticleSystem parent)
-        {
-            if (self == null || parent == null) return false;
-
-            var subEmitters = parent.subEmitters;
-            if (!subEmitters.enabled) return false; // No sub emitters.
-
-            var count = subEmitters.subEmittersCount;
-            for (var i = 0; i < count; i++)
-            {
-                if (subEmitters.GetSubEmitterSystem(i) == self) return true;
-            }
-
-            return false;
-        }
    }
 }
--- a/Samples~/Demo/Scripts/CopyItemOnStart.cs
+++ b/Samples~/Demo/Scripts/CopyItemOnStart.cs
@@ -15,7 +15,7 @@ namespace Coffee.UIExtensions.Demo

        private void Start()
        {
-            if (m_Origin == null) return;
+            if (!m_Origin) return;
            m_Origin.SetActive(false);

            var parent = m_Origin.transform.parent;
--- a/Samples~/Demo/Scripts/UIElementDragger.cs
+++ b/Samples~/Demo/Scripts/UIElementDragger.cs
@@ -42,7 +42,7 @@ public class UIElementDragger : MonoBehaviour, IBeginDragHandler, IDragHandler,
                break;
            case Target.Custom:
                _rectTransform.localPosition += delta;
-                if (m_CustomTarget != null)
+                if (m_CustomTarget)
                {
                    if (m_UseCanvasScale)
                    {
--- a/Samples~/Demo/Scripts/UIParticle_Demo.cs
+++ b/Samples~/Demo/Scripts/UIParticle_Demo.cs
@@ -1,4 +1,3 @@
-using Coffee.UIParticleInternal;
 using UnityEngine;
 using UnityEngine.Serialization;
 using UnityEngine.UI;
@@ -52,7 +51,7 @@ namespace Coffee.UIExtensions.Demo

        public void EnableAnimations(bool flag)
        {
-            foreach (var animator in Misc.FindObjectsOfType<Animator>())
+            foreach (var animator in FindObjectsOfType<Animator>())
            {
                animator.enabled = flag;
            }
@@ -80,7 +79,7 @@ namespace Coffee.UIExtensions.Demo

        public void UIParticle_Scale(float scale)
        {
-            foreach (var uip in Misc.FindObjectsOfType<UIParticle>())
+            foreach (var uip in FindObjectsOfType<UIParticle>())
            {
                uip.scale = scale;
            }
@@ -88,7 +87,7 @@ namespace Coffee.UIExtensions.Demo

        public void ParticleSystem_WorldSpaseSimulation(bool flag)
        {
-            foreach (var p in Misc.FindObjectsOfType<ParticleSystem>())
+            foreach (var p in FindObjectsOfType<ParticleSystem>())
            {
                var main = p.main;
                main.simulationSpace = flag
@@ -124,7 +123,7 @@ namespace Coffee.UIExtensions.Demo

        public void ParticleSystem_SetScale(float scale)
        {
-            foreach (var ps in Misc.FindObjectsOfType<ParticleSystem>())
+            foreach (var ps in FindObjectsOfType<ParticleSystem>())
            {
                ps.transform.localScale = new Vector3(scale, scale, scale);
            }
--- a/Samples~/Demo/Sprites/UIParticle_Demo_Light_Frame.png.meta
+++ b/Samples~/Demo/Sprites/UIParticle_Demo_Light_Frame.png.meta
@@ -42,12 +42,12 @@ TextureImporter:
  compressionQuality: 50
  spriteMode: 1
  spriteExtrude: 1
-  spriteMeshType: 0
+  spriteMeshType: 1
  alignment: 0
  spritePivot: {x: 0.5, y: 0.5}
  spritePixelsToUnits: 100
  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 0
+  spriteGenerateFallbackPhysicsShape: 1
  alphaUsage: 1
  alphaIsTransparency: 1
  spriteTessellationDetail: -1
--- a/Samples~/Demo/Sprites/UIParticle_Demo_Move.png.meta
+++ b/Samples~/Demo/Sprites/UIParticle_Demo_Move.png.meta
@@ -27,7 +27,7 @@ TextureImporter:
  generateCubemap: 6
  cubemapConvolution: 0
  seamlessCubemap: 0
-  textureFormat: 4
+  textureFormat: 1
  maxTextureSize: 2048
  textureSettings:
    serializedVersion: 2
@@ -42,12 +42,12 @@ TextureImporter:
  compressionQuality: 50
  spriteMode: 1
  spriteExtrude: 1
-  spriteMeshType: 0
+  spriteMeshType: 1
  alignment: 0
  spritePivot: {x: 0.5, y: 0.5}
  spritePixelsToUnits: 100
  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 0
+  spriteGenerateFallbackPhysicsShape: 1
  alphaUsage: 1
  alphaIsTransparency: 1
  spriteTessellationDetail: -1
--- a/Samples~/Demo/Sprites/UIParticle_Demo_Star.png.meta
+++ b/Samples~/Demo/Sprites/UIParticle_Demo_Star.png.meta
@@ -42,12 +42,12 @@ TextureImporter:
  compressionQuality: 50
  spriteMode: 1
  spriteExtrude: 1
-  spriteMeshType: 0
+  spriteMeshType: 1
  alignment: 0
  spritePivot: {x: 0.5, y: 0.5}
  spritePixelsToUnits: 100
  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 0
+  spriteGenerateFallbackPhysicsShape: 1
  alphaUsage: 0
  alphaIsTransparency: 1
  spriteTessellationDetail: -1
--- a/Samples~/Demo/Sprites/UIParticle_Demo_Unity-chan.png.meta
+++ b/Samples~/Demo/Sprites/UIParticle_Demo_Unity-chan.png.meta
@@ -27,7 +27,7 @@ TextureImporter:
  generateCubemap: 6
  cubemapConvolution: 0
  seamlessCubemap: 0
-  textureFormat: 4
+  textureFormat: -1
  maxTextureSize: 2048
  textureSettings:
    serializedVersion: 2
@@ -42,12 +42,12 @@ TextureImporter:
  compressionQuality: 50
  spriteMode: 1
  spriteExtrude: 1
-  spriteMeshType: 0
+  spriteMeshType: 1
  alignment: 0
  spritePivot: {x: 0.5, y: 0.5}
  spritePixelsToUnits: 100
  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 0
+  spriteGenerateFallbackPhysicsShape: 1
  alphaUsage: 1
  alphaIsTransparency: 1
  spriteTessellationDetail: -1
--- a/Shaders/UIAdditive.shader
+++ b/Shaders/UIAdditive.shader
@@ -40,10 +40,7 @@
        Lighting Off
        ZWrite Off
        ZTest [unity_GUIZTestMode]
-        Fog
-        {
-            Mode Off
-        }
+        Fog { Mode Off }
        Blend One One

        ColorMask [_ColorMask]
@@ -64,21 +61,21 @@

            struct appdata_t
            {
-                float4 vertex : POSITION;
-                float4 color : COLOR;
+                float4 vertex   : POSITION;
+                float4 color    : COLOR;
                float2 texcoord : TEXCOORD0;
                UNITY_VERTEX_INPUT_INSTANCE_ID
            };

            struct v2f
            {
-                float4 vertex : SV_POSITION;
-                fixed4 color : COLOR;
-                float2 texcoord : TEXCOORD0;
-                float4 worldPosition : TEXCOORD1;
+                float4 vertex           : SV_POSITION;
+                fixed4 color            : COLOR;
+                float2 texcoord         : TEXCOORD0;
+                float4 worldPosition    : TEXCOORD1;
                UNITY_VERTEX_OUTPUT_STEREO
            };
-
+            
            fixed4 _Color;
            sampler2D _MainTex;
            float4 _MainTex_ST;
@@ -117,4 +114,4 @@
            ENDCG
        }
    }
-}
+}
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
  "name": "com.coffee.ui-particle",
  "displayName": "UI Particle",
  "description": "This package provides a component to render particle effects for uGUI.\nThe particle rendering is maskable and sortable, without the need for an extra Camera, RenderTexture, or Canvas.",
-  "version": "4.12.1",
+  "version": "5.0.0-preview.4",
  "unity": "2018.2",
  "license": "MIT",
  "repository": {
Author	SHA1	Message	Date
semantic-release-bot	aff35a65fd	chore(release): 5.0.0-preview.4 [skip ci] # [5.0.0-preview.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.3...v5.0.0-preview.4) (2024-06-27) ### Bug Fixes * generated baking-camera object remains in the prefab or scene (again) ([`5babd6d`](`5babd6d07b`)) * SetParticleSystemInstance/Prefab APIs destroy generated objects ([`4b30c16`](`4b30c16b9a`)) ### Features * add 'custom view' option. ([`4252f11`](`4252f1199b`)) * restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` (again) ([`04232b6`](`04232b6749`)) * the rendering order list in inspector is now more compact ([`9212eaa`](`9212eaa84c`))	2024-06-27 07:51:20 +00:00
mob-sakai	68c066e58c	refactor	2024-06-27 16:48:23 +09:00
mob-sakai	e96b1dc7c0	update coffee.internal	2024-06-27 16:26:48 +09:00
mob-sakai	59f00f3cc1	refactor	2024-06-27 16:25:28 +09:00
mob-sakai	2d9f247ef2	feat: the rendering order list in inspector is now more compact	2024-06-27 16:23:48 +09:00
mob-sakai	58d6badb7b	feat: restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` (again)	2024-06-27 16:23:39 +09:00
mob-sakai	8f9d0bdc64	feat: add 'custom view' option. Use this if the particles are not displayed correctly due to min/max particle size.	2024-06-27 16:23:30 +09:00
mob-sakai	8bcc87e644	fix: generated baking-camera object remains in the prefab or scene (again)	2024-06-27 16:22:24 +09:00
mob-sakai	0a67cc99bc	fix: SetParticleSystemInstance/Prefab APIs destroy generated objects	2024-06-27 16:22:10 +09:00
semantic-release-bot	b068238e0a	chore(release): 5.0.0-preview.3 [skip ci] # [5.0.0-preview.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.2...v5.0.0-preview.3) (2024-06-21) ### Bug Fixes * generated baking-camera object remains in the prefab or scene ([`fd66928`](`fd66928efe`))	2024-06-21 05:23:11 +00:00
mob-sakai	42fb0ecf23	fix: generated baking-camera object remains in the prefab or scene	2024-06-21 14:22:34 +09:00
semantic-release-bot	79635e81d7	chore(release): 5.0.0-preview.2 [skip ci] # [5.0.0-preview.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.1...v5.0.0-preview.2) (2024-06-20) ### Bug Fixes * 'Resource ID out of range in GetResource' error in overlay rendering mode ([`ff78b6f`](`ff78b6fe32`)), closes [#308](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/308) * `UIParticle.transform.localScale` does not scale particles ([`491ee7b`](`491ee7b0c3`)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313) * despite not using the size module, particles become smaller based on their z position ([`c96ddf2`](`c96ddf293e`)), closes [#316](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/316) * the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues ([`a9c2b19`](`a9c2b19edf`)), closes [#299](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/299) [#312](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/312) * UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([`63b24d8`](`63b24d8a8b`)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313) * UIParticle is scaled incorrectly with nested canvases ([`c95d8c6`](`c95d8c6b17`)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313) ### Features * remove overlay window (editor) ([`fc3fbdd`](`fc3fbdd230`)) * reset previous position on start play for world space simulation ([`e741584`](`e741584507`)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303) * restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([`dfb94f4`](`dfb94f4bad`))	2024-06-20 15:27:14 +00:00
mob-sakai	f388eb45ec	fix: despite not using the size module, particles become smaller based on their z position close #316	2024-06-20 12:52:21 +09:00
mob-sakai	f08809772a	feat: restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` # Conflicts: # Packages/src/Editor/UIParticleEditor.cs # Packages/src/Runtime/UIParticle.cs	2024-06-20 12:52:21 +09:00
mob-sakai	f96604ffc9	feat: reset previous position on start play for world space simulation close #303 # Conflicts: # Packages/src/Runtime/UIParticleRenderer.cs	2024-06-20 12:52:21 +09:00
mob-sakai	beac3b8048	docs: update license	2024-06-20 12:52:21 +09:00
mob-sakai	a00bcd8a35	fix demo	2024-06-20 12:52:21 +09:00
mob-sakai	1f72048ef5	fix: `UIParticle.transform.localScale` does not scale particles close #313	2024-06-19 13:49:00 +09:00
mob-sakai	65f7555482	fix: UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` close #313	2024-06-19 13:48:54 +09:00
mob-sakai	433f828ad9	fix: UIParticle is scaled incorrectly with nested canvases close #313	2024-06-19 13:48:46 +09:00
mob-sakai	1b8f0aac4a	refactor: refactor	2024-06-19 13:47:51 +09:00
SAMYTHEBIGJUICY	70271ae5e9	fix: 'Resource ID out of range in GetResource' error in overlay rendering mode #308	2024-06-14 11:35:15 +09:00
mob-sakai	c3540a056c	update coffee.internal	2024-06-14 11:27:47 +09:00
mob-sakai	0cf4ae88c5	fix: the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues close #299, close #312	2024-05-24 17:49:07 +09:00
mob-sakai	e579f524ba	feat: remove overlay window (editor)	2024-05-24 17:44:14 +09:00
semantic-release-bot	23dd7b5987	chore(release): 5.0.0-preview.1 [skip ci] # [5.0.0-preview.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.6...v5.0.0-preview.1) (2024-05-23) ### Features * add project settings for UIParticle ([`b6e6185`](`b6e6185c52`)) * change the default value of `UIParticle.scale` from `10` to `1` ([`1b3c0f9`](`1b3c0f92dc`)), closes [#310](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/310) * UIParticle no longer inherits from MaskableGraphic ([`b6d921b`](`b6d921b3e4`)) ### BREAKING CHANGES * Some members inherited from MaskableGraphic will no longer be available.	2024-05-23 11:19:50 +00:00
mob-sakai	f476898b46	fix preview release workflow	2024-05-23 20:17:25 +09:00
mob-sakai	4e91b6f69b	feat: change the default value of `UIParticle.scale` from `10` to `1` close #310	2024-05-23 20:10:33 +09:00
mob-sakai	1bf669e09f	docs: update readme	2024-05-23 20:10:33 +09:00
mob-sakai	54be6bf588	refactor: refactor	2024-05-23 20:10:33 +09:00
mob-sakai	72f5f9441b	feat: add project settings for UIParticle	2024-05-23 20:10:33 +09:00
mob-sakai	acebfb27f6	feat: UIParticle no longer inherits from MaskableGraphic BREAKING CHANGE: Some members inherited from MaskableGraphic will no longer be available.	2024-05-23 20:10:33 +09:00
mob-sakai	a3e725fd5a	refactor: using Coffee.Internal	2024-05-23 20:10:33 +09:00