update demo

- enableLinearToGamma: Enables LinearToGamma during mesh baking

.editorconfig

@@ -25,6 +25,7 @@ indent_size = 4
 trim_trailing_whitespace = true
 insert_final_newline = true
 
+csharp_style_namespace_declarations = block_scoped
 csharp_style_implicit_object_creation_when_type_is_apparent = false
 resharper_object_creation_when_type_evident = explicitly_typed
 
@@ -86,6 +87,9 @@ csharp_style_var_elsewhere = true:suggestion
 dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
 dotnet_style_predefined_type_for_member_access = true:suggestion
 
+# 
+resharper_keep_existing_embedded_arrangement = true
+
 # Arguments
 csharp_arguments_literal = named:suggestion
 csharp_arguments_string_literal = named:suggestion
@@ -134,7 +138,7 @@ dotnet_naming_style._camel_case.capitalization = camel_case
 
 # Code style defaults
 dotnet_sort_system_directives_first = true
-csharp_preserve_single_line_statements = false:none
+csharp_preserve_single_line_statements = false
 csharp_prefer_static_local_function = true:suggestion
 csharp_prefer_simple_using_statement = false:none
 csharp_style_prefer_switch_expression = true:suggestion
@@ -186,7 +190,7 @@ csharp_space_after_dot = false
 csharp_space_after_keywords_in_control_flow_statements = true
 csharp_space_after_semicolon_in_for_statement = true
 csharp_space_around_binary_operators = before_and_after
-csharp_space_around_declaration_statements = do_not_ignore
+csharp_space_around_declaration_statements = false
 csharp_space_before_colon_in_inheritance_clause = true
 csharp_space_before_comma = false
 csharp_space_before_dot = false

.gitignore

@@ -28,3 +28,4 @@ Assets/Plugins/
 obj/
 bin/
 UserSettings/
+*.app

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Assets/Demo/CustomView/UI-Color.shader

@@ -0,0 +1,177 @@
+Shader "UI/Color"
+{
+    Properties
+    {
+        _MainTex ("Main Texture", 2D) = "white" {}
+        _Color ("Tint", Color) = (1,1,1,1)
+        [KeywordEnum(Multipry, Additive, Subtract, Fill)] _ColorMode ("Color Mode", Int) = 0
+        [Enum(UnityEngine.Rendering.BlendMode)] _SrcBlend ("Src Blend Mode", Int) = 1
+        [Enum(UnityEngine.Rendering.BlendMode)] _DstBlend ("Dst Blend Mode", Int) = 10
+
+        _StencilComp ("Stencil Comparison", Float) = 8
+        _Stencil ("Stencil ID", Float) = 0
+        _StencilOp ("Stencil Operation", Float) = 0
+        _StencilWriteMask ("Stencil Write Mask", Float) = 255
+        _StencilReadMask ("Stencil Read Mask", Float) = 255
+
+        _ColorMask ("Color Mask", Float) = 15
+
+        [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
+    }
+
+    SubShader
+    {
+        Tags
+        {
+            "Queue"="Transparent"
+            "IgnoreProjector"="True"
+            "RenderType"="Transparent"
+            "PreviewType"="Plane"
+            "CanUseSpriteAtlas"="True"
+        }
+
+        Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp]
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+
+        Cull Off
+        Lighting Off
+        ZWrite Off
+        ZTest [unity_GUIZTestMode]
+        Blend [_SrcBlend] [_DstBlend]
+        ColorMask [_ColorMask]
+
+        Pass
+        {
+            Name "Default"
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #pragma target 2.0
+
+            #include "UnityCG.cginc"
+            #include "UnityUI.cginc"
+
+            #pragma multi_compile_local _ UNITY_UI_CLIP_RECT
+            #pragma multi_compile_local _ UNITY_UI_ALPHACLIP
+
+            sampler2D _MainTex;
+            fixed4 _Color;
+            fixed4 _TextureSampleAdd;
+            float4 _ClipRect;
+            float4 _MainTex_ST;
+            float _UIMaskSoftnessX;
+            float _UIMaskSoftnessY;
+            int _UIVertexColorAlwaysGammaSpace;
+            int _ColorMode;
+
+            struct appdata_t
+            {
+                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 mask : TEXCOORD2;
+                UNITY_VERTEX_OUTPUT_STEREO
+            };
+
+            v2f vert(appdata_t v)
+            {
+                v2f OUT;
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
+                float4 vPosition = UnityObjectToClipPos(v.vertex);
+                OUT.worldPosition = v.vertex;
+                OUT.vertex = vPosition;
+
+                float2 pixelSize = vPosition.w;
+                pixelSize /= float2(1, 1) * abs(mul((float2x2)UNITY_MATRIX_P, _ScreenParams.xy));
+
+                float4 clampedRect = clamp(_ClipRect, -2e10, 2e10);
+                float2 maskUV = (v.vertex.xy - clampedRect.xy) / (clampedRect.zw - clampedRect.xy);
+                OUT.texcoord = TRANSFORM_TEX(v.texcoord.xy, _MainTex);
+                OUT.mask = float4(v.vertex.xy * 2 - clampedRect.xy - clampedRect.zw,
+                                  0.25 / (0.25 * half2(_UIMaskSoftnessX, _UIMaskSoftnessY) + abs(pixelSize.xy)));
+
+                if (_UIVertexColorAlwaysGammaSpace)
+                {
+                    if (!IsGammaSpace())
+                    {
+                        v.color.rgb = GammaToLinearSpace(v.color.rgb);
+                    }
+                }
+
+                OUT.color = v.color * _Color;
+                return OUT;
+            }
+
+            half4 apply_color(half4 color, const half4 factor, const int mode)
+            {
+                const half3 c = factor.rgb * color.a;
+                // Mode 1: Additive
+                if (mode == 1)
+                {
+                    color.rgb += c;
+                }
+                // Mode 2: Subtract
+                else if (mode == 2)
+                {
+                    color.rgb -= c;
+                }
+                // Mode 3: Replace
+                else if (mode == 3)
+                {
+                    color.rgb = c;
+                }
+                // Default: Multiply
+                else
+                {
+                    color.rgb *= c;
+                }
+
+                return color * factor.a;
+            }
+
+            fixed4 frag(v2f IN) : SV_Target
+            {
+                //Round up the alpha color coming from the interpolator (to 1.0/256.0 steps)
+                //The incoming alpha could have numerical instability, which makes it very sensible to
+                //HDR color transparency blend, when it blends with the world's texture.
+                const half alphaPrecision = half(0xff);
+                const half invAlphaPrecision = half(1.0 / alphaPrecision);
+                float2 uv = IN.texcoord;
+
+                IN.color.a = round(IN.color.a * alphaPrecision) * invAlphaPrecision;
+                half4 color = tex2D(_MainTex, uv) + _TextureSampleAdd;
+
+                #if UNITY_UI_CLIP_RECT
+                half2 m = saturate((_ClipRect.zw - _ClipRect.xy - abs(IN.mask.xy)) * IN.mask.zw);
+                color.a *= m.x * m.y;
+                #endif
+
+                #if UNITY_UI_ALPHACLIP
+                clip (color.a - 0.001);
+                #endif
+
+                // Apply color mode.
+                color = apply_color(color, IN.color, _ColorMode);
+
+                return color;
+            }
+            ENDCG
+        }
+    }
+}

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Assets/Demo/Performance Demo/Scripts/UIParticle_PerformanceDemo.cs

@@ -46,7 +46,11 @@ namespace Coffee.UIExtensions.Demo
 
             if (!flag)
             {
+#if UNITY_2023_1_OR_NEWER
+                foreach (var ps in FindObjectsByType<ParticleSystem>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+#else
                 foreach (var ps in FindObjectsOfType<ParticleSystem>())
+#endif
                 {
                     ps.Play(false);
                 }
@@ -75,7 +79,11 @@ namespace Coffee.UIExtensions.Demo
 
         public void ParticleSystem_SetScale(float scale)
         {
+#if UNITY_2023_1_OR_NEWER
+            foreach (var ps in FindObjectsByType<ParticleSystem>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+#else
             foreach (var ps in FindObjectsOfType<ParticleSystem>())
+#endif
             {
                 ps.transform.localScale = new Vector3(scale, scale, scale);
             }

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@@ -14,15 +14,15 @@ MonoBehaviour:
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   m_BootSceneNameRegex: .*
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+  m_DevelopmentBuildOnly: 0
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+  m_Width: 750
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@@ -31,3 +31,10 @@ MonoBehaviour:
       m_Path: UnityEngine.Screen, UnityEngine.CoreModule;height
     m_Arg2:
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+  - m_Format: UIParticles:{0} Materials:{1}
+    m_Arg0:
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+    m_Arg1:
+      m_Path: Coffee.UIParticleInternal.MaterialRepository, Coffee.UIParticle;count
+    m_Arg2:
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-  m_Pivot: {x: 0, y: 0}
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-Canvas:
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-  m_PrefabInstance: {fileID: 0}
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Packages/manifest.json

@@ -1,9 +1,8 @@
 {
   "dependencies": {
-    "com.unity.ide.rider": "3.0.27",
+    "com.unity.ide.rider": "3.0.31",
     "com.coffee.development": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/Development",
     "com.coffee.nano-monitor": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/NanoMonitor",
-    "com.coffee.simple-scene-navigator": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/SceneNavigator",
     "com.coffee.sub-asset-editor": "https://github.com/mob-sakai/SubAssetEditor.git",
     "com.unity.test-framework": "1.1.33",
     "com.unity.modules.animation": "1.0.0",

Packages/packages-lock.json

@@ -5,7 +5,7 @@
       "depth": 0,
       "source": "git",
       "dependencies": {},
-      "hash": "4a57c0a498ba7ce667290ec39510b1474030471a"
+      "hash": "c51e4514c9ab944915a639433ee52342e55a644e"
     },
     "com.coffee.nano-monitor": {
       "version": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/NanoMonitor",
@@ -14,16 +14,7 @@
       "dependencies": {
         "com.unity.ugui": "1.0.0"
       },
-      "hash": "4a57c0a498ba7ce667290ec39510b1474030471a"
+      "hash": "c51e4514c9ab944915a639433ee52342e55a644e"
-    },
-    "com.coffee.simple-scene-navigator": {
-      "version": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/SceneNavigator",
-      "depth": 0,
-      "source": "git",
-      "dependencies": {
-        "com.unity.ugui": "1.0.0"
-      },
-      "hash": "4a57c0a498ba7ce667290ec39510b1474030471a"
     },
     "com.coffee.sub-asset-editor": {
       "version": "https://github.com/mob-sakai/SubAssetEditor.git",
@@ -49,7 +40,7 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.ide.rider": {
-      "version": "3.0.27",
+      "version": "3.0.31",
       "depth": 0,
       "source": "registry",
       "dependencies": {

Packages/src/CHANGELOG.md

@@ -1,16 +1,75 @@
-# [5.0.0-preview.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.6...v5.0.0-preview.1) (2024-05-23)
+# [4.9.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.8.1...v4.9.0) (2024-07-18)
 
 
 ### Features
 
-* add project settings for UIParticle ([b6e6185](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b6e6185c521fef0f118f61cfdfdac07b87555c01))
+* ParticleAttractor supports multiple ParticleSystems ([3834780](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3834780fdb43443fe6e1ef89df54d26a24d62a91))
-* 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))
+## [4.8.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.8.0...v4.8.1) (2024-06-27)
 
 
-### BREAKING CHANGES
+### Bug Fixes
 
-* Some members inherited from MaskableGraphic will no longer be available.
+* 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)
 
 ## [4.6.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.5...v4.6.6) (2024-05-23)
 

Packages/src/Editor/AnimatablePropertyEditor.cs

@@ -31,17 +31,18 @@ namespace Coffee.UIExtensions
             }
             else
             {
-                result.Aggregate(s_Sb, (a, b) => s_Sb.AppendFormat("{0}, ", b));
+                result.Aggregate(s_Sb, (a, b) =>
+                {
+                    s_Sb.Append(b);
+                    return s_Sb.Append(", ");
+                });
                 s_Sb.Length -= 2;
             }
 
             return s_Sb.ToString();
         }
 
-        public static void Draw(SerializedProperty sp, Material[] mats)
+        public static void Draw(SerializedProperty sp, List<Material> mats)
-        {
-            bool isClicked;
-            using (new EditorGUILayout.HorizontalScope(GUILayout.ExpandWidth(false)))
         {
             var pos = EditorGUILayout.GetControlRect(true);
             var label = new GUIContent(sp.displayName, sp.tooltip);
@@ -49,17 +50,16 @@ namespace Coffee.UIExtensions
             var text = sp.hasMultipleDifferentValues
                 ? "-"
                 : CollectActiveNames(sp, s_ActiveNames);
-                isClicked = GUI.Button(rect, text, EditorStyles.popup);
-            }
 
-            if (!isClicked) return;
+            if (!GUI.Button(rect, text, EditorStyles.popup)) return;
 
             var gm = new GenericMenu();
-            gm.AddItem(s_ContentNothing, s_ActiveNames.Count == 0, () =>
+            gm.AddItem(s_ContentNothing, s_ActiveNames.Count == 0, x =>
             {
-                sp.ClearArray();
+                var current = (SerializedProperty)x;
-                sp.serializedObject.ApplyModifiedProperties();
+                current.ClearArray();
-            });
+                current.serializedObject.ApplyModifiedProperties();
+            }, sp);
 
             if (!sp.hasMultipleDifferentValues)
             {
@@ -73,7 +73,7 @@ namespace Coffee.UIExtensions
             }
 
             s_Names.Clear();
-            for (var j = 0; j < mats.Length; j++)
+            for (var j = 0; j < mats.Count; j++)
             {
                 var mat = mats[j];
                 if (!mat || !mat.shader) continue;
@@ -82,8 +82,7 @@ namespace Coffee.UIExtensions
                 {
                     var name = ShaderUtil.GetPropertyName(mat.shader, i);
                     var type = (AnimatableProperty.ShaderPropertyType)ShaderUtil.GetPropertyType(mat.shader, i);
-                    if (s_Names.Contains(name)) continue;
+                    if (!s_Names.Add(name)) continue;
-                    s_Names.Add(name);
 
                     AddMenu(gm, sp, new ShaderProperty(name, type), true);
 

Packages/src/Editor/UIParticleEditor.cs

@@ -4,6 +4,7 @@ using System.Text.RegularExpressions;
 using UnityEditor;
 using UnityEditorInternal;
 using UnityEngine;
+using UnityEngine.Profiling;
 using UnityEngine.UI;
 
 #if UNITY_2021_2_OR_NEWER
@@ -28,41 +29,24 @@ namespace Coffee.UIExtensions
     [CanEditMultipleObjects]
     internal class UIParticleEditor : Editor
     {
-#if UNITY_2021_2_OR_NEWER
-#if UNITY_2022_1_OR_NEWER
-        [Overlay(typeof(SceneView), "Scene View/UI Particles", "UI Particles", true,
-            defaultDockPosition = DockPosition.Bottom,
-            defaultDockZone = DockZone.Floating,
-            defaultLayout = Layout.Panel)]
-#else
-        [Overlay(typeof(SceneView), "Scene View/UI Particles", "UI Particles", true)]
-#endif
-        private class UIParticleOverlay : IMGUIOverlay, ITransientOverlay
-        {
-            public bool visible => s_SerializedObject != null;
-
-            public override void OnGUI()
-            {
-                if (visible)
-                {
-                    WindowFunction();
-                }
-            }
-        }
-#endif
-
         //################################
         // Constant or Static Members.
         //################################
+        private static readonly GUIContent[] s_ContentMaterials = new[]
+        {
+            new GUIContent("Material"),
+            new GUIContent("Trail Material")
+        };
+
         private static readonly GUIContent s_ContentRenderingOrder = new GUIContent("Rendering Order");
         private static readonly GUIContent s_ContentRefresh = new GUIContent("Refresh");
         private static readonly GUIContent s_ContentFix = new GUIContent("Fix");
-        private static readonly GUIContent s_ContentMaterial = new GUIContent("Material");
-        private static readonly GUIContent s_ContentTrailMaterial = new GUIContent("Trail Material");
         private static readonly GUIContent s_Content3D = new GUIContent("3D");
         private static readonly GUIContent s_ContentRandom = new GUIContent("Random");
         private static readonly GUIContent s_ContentScale = new GUIContent("Scale");
-        private static SerializedObject s_SerializedObject;
+        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;
@@ -73,6 +57,8 @@ namespace Coffee.UIExtensions
         private SerializedProperty _groupMaxId;
         private SerializedProperty _positionMode;
         private SerializedProperty _autoScalingMode;
+        private SerializedProperty _useCustomView;
+        private SerializedProperty _customViewSize;
         private ReorderableList _ro;
         private bool _showMax;
 
@@ -90,56 +76,6 @@ namespace Coffee.UIExtensions
             "_ColorMask"
         };
 
-        [InitializeOnLoadMethod]
-        private static void Init()
-        {
-#if !UNITY_2021_2_OR_NEWER
-            var miSceneViewOverlayWindow = Type.GetType("UnityEditor.SceneViewOverlay, UnityEditor")
-                ?.GetMethods(BindingFlags.Public | BindingFlags.Static)
-                .First(x => x.Name == "Window" && 5 <= x.GetParameters().Length);
-            var windowFunction = (Action<Object, SceneView>)WindowFunction;
-            var windowFunctionType = Type.GetType("UnityEditor.SceneViewOverlay+WindowFunction, UnityEditor");
-            var windowFunctionDelegate = Delegate.CreateDelegate(windowFunctionType, windowFunction.Method);
-            var windowTitle = new GUIContent(ObjectNames.NicifyVariableName(nameof(UIParticle)));
-#if UNITY_2019_2_OR_NEWER
-            //public static void Window(GUIContent title, WindowFunction sceneViewFunc, int order, Object target, WindowDisplayOption option, EditorWindow window = null)
-            var sceneViewArgs = new object[] { windowTitle, windowFunctionDelegate, 599, null, 2, null };
-#else
-            //public static void Window(GUIContent title, WindowFunction sceneViewFunc, int order, Object target, WindowDisplayOption option)
-            var sceneViewArgs = new object[] { windowTitle, windowFunctionDelegate, 599, null, 2 };
-#endif
-
-#if UNITY_2019_1_OR_NEWER
-            SceneView.duringSceneGui += _ =>
-#else
-            SceneView.onSceneGUIDelegate += _ =>
-#endif
-            {
-                if (s_SerializedObject != null)
-                {
-                    miSceneViewOverlayWindow.Invoke(null, sceneViewArgs);
-                }
-            };
-#endif
-
-            SerializedObject CreateSerializeObject()
-            {
-                var uiParticles = Selection.gameObjects.Select(x => x.GetComponent<ParticleSystem>())
-                    .Where(x => x)
-                    .Select(x => x.GetComponentInParent<UIParticle>(true))
-                    .Where(x => x && x.canvas)
-                    .Concat(Selection.gameObjects.Select(x => x.GetComponent<UIParticle>())
-                        .Where(x => x && x.canvas))
-                    .Distinct()
-                    .OfType<Object>()
-                    .ToArray();
-                return 0 < uiParticles.Length ? new SerializedObject(uiParticles) : null;
-            }
-
-            s_SerializedObject = CreateSerializeObject();
-            Selection.selectionChanged += () => s_SerializedObject = CreateSerializeObject();
-        }
-
         //################################
         // Public/Protected Members.
         //################################
@@ -156,31 +92,43 @@ namespace Coffee.UIExtensions
             _groupMaxId = serializedObject.FindProperty("m_GroupMaxId");
             _positionMode = serializedObject.FindProperty("m_PositionMode");
             _autoScalingMode = serializedObject.FindProperty("m_AutoScalingMode");
+            _useCustomView = serializedObject.FindProperty("m_UseCustomView");
+            _customViewSize = serializedObject.FindProperty("m_CustomViewSize");
 
             var sp = serializedObject.FindProperty("m_Particles");
             _ro = new ReorderableList(sp.serializedObject, sp, true, true, true, true)
             {
-                elementHeight = EditorGUIUtility.singleLineHeight * 3 + 4,
+                elementHeightCallback = index =>
-                elementHeightCallback = _ => 3 * (EditorGUIUtility.singleLineHeight + 2),
+                {
+                    var ps = sp.GetArrayElementAtIndex(index).objectReferenceValue as ParticleSystem;
+                    var materialCount = 0;
+                    if (ps && ps.TryGetComponent<ParticleSystemRenderer>(out var psr))
+                    {
+                        materialCount = psr.sharedMaterials.Length;
+                    }
+
+                    return (materialCount + 1) * (EditorGUIUtility.singleLineHeight + 2);
+                },
                 drawElementCallback = (rect, index, _, __) =>
                 {
-                    EditorGUI.BeginDisabledGroup(sp.hasMultipleDifferentValues);
+                    rect.y += 2;
-                    rect.y += 1;
                     rect.height = EditorGUIUtility.singleLineHeight;
                     var p = sp.GetArrayElementAtIndex(index);
                     EditorGUI.ObjectField(rect, p, GUIContent.none);
+                    var ps = p.objectReferenceValue as ParticleSystem;
+                    if (!ps || !ps.TryGetComponent<ParticleSystemRenderer>(out var psr)) return;
+
                     rect.x += 15;
                     rect.width -= 15;
-                    var ps = p.objectReferenceValue as ParticleSystem;
+                    var materials = new SerializedObject(psr).FindProperty("m_Materials");
-                    var materials = ps
+                    var count = Mathf.Min(materials.arraySize, 2);
-                        ? new SerializedObject(ps.GetComponent<ParticleSystemRenderer>()).FindProperty("m_Materials")
+                    for (var i = 0; i < count; i++)
-                        : null;
+                    {
-                    rect.y += rect.height + 1;
+                        rect.y += rect.height + 2;
-                    MaterialField(rect, s_ContentMaterial, materials, 0);
+                        EditorGUI.PropertyField(rect, materials.GetArrayElementAtIndex(i), s_ContentMaterials[i]);
-                    rect.y += rect.height + 1;
+                    }
-                    MaterialField(rect, s_ContentTrailMaterial, materials, 1);
+
-                    EditorGUI.EndDisabledGroup();
+                    if (materials.serializedObject.hasModifiedProperties)
-                    if (materials != null && materials.serializedObject.hasModifiedProperties)
                     {
                         materials.serializedObject.ApplyModifiedProperties();
                     }
@@ -216,20 +164,6 @@ namespace Coffee.UIExtensions
             }
         }
 
-        private static void MaterialField(Rect rect, GUIContent label, SerializedProperty sp, int index)
-        {
-            if (sp == null || sp.arraySize <= index)
-            {
-                EditorGUI.BeginDisabledGroup(true);
-                EditorGUI.ObjectField(rect, label, null, typeof(Material), true);
-                EditorGUI.EndDisabledGroup();
-            }
-            else
-            {
-                EditorGUI.PropertyField(rect, sp.GetArrayElementAtIndex(index), label);
-            }
-        }
-
         /// <summary>
         /// Implement this function to make a custom inspector.
         /// </summary>
@@ -238,6 +172,7 @@ namespace Coffee.UIExtensions
             var current = target as UIParticle;
             if (!current) return;
 
+            Profiler.BeginSample("(UIP:E) OnInspectorGUI");
             serializedObject.Update();
 
             // Maskable
@@ -249,13 +184,8 @@ namespace Coffee.UIExtensions
             EditorGUI.EndDisabledGroup();
 
             // AnimatableProperties
-            var mats = current.particles
+            current.GetMaterials(s_TempMaterials);
-                .Where(x => x)
+            AnimatablePropertyEditor.Draw(_animatableProperties, s_TempMaterials);
-                .Select(x => x.GetComponent<ParticleSystemRenderer>().sharedMaterial)
-                .Where(x => x)
-                .ToArray();
-
-            AnimatablePropertyEditor.Draw(_animatableProperties, mats);
 
             // Mesh sharing
             EditorGUI.BeginChangeCheck();
@@ -263,26 +193,42 @@ namespace Coffee.UIExtensions
             if (EditorGUI.EndChangeCheck())
             {
                 serializedObject.ApplyModifiedProperties();
-                foreach (var uip in targets.OfType<UIParticle>())
+                foreach (var t in targets)
+                {
+                    if (t is UIParticle uip)
                     {
                         uip.ResetGroupId();
                     }
                 }
+            }
 
             // Position Mode
             EditorGUILayout.PropertyField(_positionMode);
 
             // Auto Scaling
-            DrawAutoScaling(_autoScalingMode, targets.OfType<UIParticle>());
+            EditorGUILayout.PropertyField(_autoScalingMode);
+
+            // Custom View Size
+            EditorGUILayout.PropertyField(_useCustomView);
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.BeginDisabledGroup(!_useCustomView.boolValue);
+            EditorGUI.indentLevel++;
+            EditorGUILayout.PropertyField(_customViewSize);
+            EditorGUI.indentLevel--;
+            EditorGUI.EndDisabledGroup();
+            if (EditorGUI.EndChangeCheck())
+            {
+                _customViewSize.floatValue = Mathf.Max(0.1f, _customViewSize.floatValue);
+            }
 
             // Target ParticleSystems.
             EditorGUI.BeginChangeCheck();
-            EditorGUI.BeginDisabledGroup(targets.OfType<UIParticle>().Any(x => !x.canvas));
             _ro.DoLayoutList();
-            EditorGUI.EndDisabledGroup();
             serializedObject.ApplyModifiedProperties();
+
             if (EditorGUI.EndChangeCheck())
             {
+                EditorApplication.QueuePlayerLoopUpdate();
                 foreach (var uip in targets.OfType<UIParticle>())
                 {
                     uip.RefreshParticles(uip.particles);
@@ -290,7 +236,8 @@ namespace Coffee.UIExtensions
             }
 
             // Non-UI built-in shader is not supported.
-            foreach (var mat in current.materials)
+            Profiler.BeginSample("(UIP:E) Non-UI built-in shader is not supported.");
+            foreach (var mat in s_TempMaterials)
             {
                 if (!mat || !mat.shader) continue;
                 var shader = mat.shader;
@@ -303,15 +250,18 @@ namespace Coffee.UIExtensions
                 }
             }
 
+            Profiler.EndSample();
+
             // Does the shader support UI masks?
+            Profiler.BeginSample("(UIP:E) Does the shader support UI masks?");
             if (current.maskable && current.GetComponentInParent<Mask>(false))
             {
-                foreach (var mat in current.materials)
+                foreach (var mat in s_TempMaterials)
                 {
                     if (!mat || !mat.shader) continue;
                     var shader = mat.shader;
-                    if (s_Shaders.Contains(shader)) continue;
+                    if (!s_Shaders.Add(shader)) continue;
-                    s_Shaders.Add(shader);
+
                     foreach (var propName in s_MaskablePropertyNames)
                     {
                         if (mat.HasProperty(propName)) continue;
@@ -325,7 +275,9 @@ namespace Coffee.UIExtensions
                 }
             }
 
+            s_TempMaterials.Clear();
             s_Shaders.Clear();
+            Profiler.EndSample();
 
             // UIParticle for trail should be removed.
             var label = "This UIParticle component should be removed. The UIParticle for trails is no longer needed.";
@@ -364,12 +316,14 @@ namespace Coffee.UIExtensions
                 }
             }
 #endif
+            Profiler.EndSample();
         }
 
-        private bool IsBuiltInObject(Object obj)
+        private static bool IsBuiltInObject(Object obj)
         {
-            return AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out var guid, out long _)
+            return AssetDatabase.IsMainAsset(obj)
-                   && Regex.IsMatch(guid, "^0{16}.0{15}$", RegexOptions.Compiled);
+                   && AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out var guid, out long _)
+                   && s_RegexBuiltInGuid.IsMatch(guid);
         }
 
 #if UNITY_2018 || UNITY_2019
@@ -463,7 +417,7 @@ namespace Coffee.UIExtensions
             {
                 EditorGUI.BeginDisabledGroup(true);
                 var obj = UIParticleUpdater.GetPrimary(spGroupId.intValue);
-                EditorGUILayout.ObjectField("Primary", obj, typeof(UIParticle), false);
+                EditorGUILayout.ObjectField(s_ContentPrimary, obj, typeof(UIParticle), false);
                 EditorGUI.EndDisabledGroup();
             }
 
@@ -473,54 +427,9 @@ namespace Coffee.UIExtensions
             return showMax;
         }
 
-        private static void DrawAutoScaling(SerializedProperty prop, IEnumerable<UIParticle> uiParticles)
+        private static void DrawAutoScaling(SerializedProperty prop)
         {
-            var isTransformMode = prop.intValue == (int)UIParticle.AutoScalingMode.Transform;
-            EditorGUI.BeginChangeCheck();
             EditorGUILayout.PropertyField(prop);
-            if (!EditorGUI.EndChangeCheck() || !isTransformMode) return;
-
-            // on changed true->false, reset scale.
-            EditorApplication.delayCall += () =>
-            {
-                foreach (var uip in uiParticles)
-                {
-                    if (!uip) continue;
-                    uip.transform.localScale = Vector3.one;
-                }
-            };
-        }
-
-#if UNITY_2021_2_OR_NEWER
-        private static void WindowFunction()
-#else
-        private static void WindowFunction(Object _, SceneView __)
-#endif
-        {
-            try
-            {
-                if (s_SerializedObject == null || !s_SerializedObject.targetObject) return;
-                var uiParticles = s_SerializedObject.targetObjects.OfType<UIParticle>().ToArray();
-                if (uiParticles.Any(x => !x || !x.canvas)) return;
-
-                s_SerializedObject.Update();
-                using (new EditorGUILayout.VerticalScope(GUILayout.Width(220f)))
-                {
-                    var labelWidth = EditorGUIUtility.labelWidth;
-                    EditorGUIUtility.labelWidth = 100;
-                    EditorGUILayout.PropertyField(s_SerializedObject.FindProperty("m_Enabled"));
-                    s_XYZMode = DrawFloatOrVector3Field(s_SerializedObject.FindProperty("m_Scale3D"), s_XYZMode);
-                    EditorGUILayout.PropertyField(s_SerializedObject.FindProperty("m_PositionMode"));
-                    DrawAutoScaling(s_SerializedObject.FindProperty("m_AutoScalingMode"), uiParticles);
-                    EditorGUIUtility.labelWidth = labelWidth;
-                }
-
-                s_SerializedObject.ApplyModifiedProperties();
-            }
-            catch
-            {
-                // ignored
-            }
         }
 
         private void DestroyUIParticle(UIParticle p, bool ignoreCurrent = false)

Packages/src/LICENSE.md

@@ -1,4 +1,4 @@
-Copyright 2018-2023 mob-sakai
+Copyright 2018-2024 mob-sakai
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

Packages/src/README.md

@@ -1,61 +1,86 @@
-# <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)
+# <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 -->
-
-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?include_prereleases)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
+[![](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.txt)  
+[![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.md)  
 ![](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) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
+<< [📝 Description](#-description-) | [📌 Key Features](#-key-features) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🔄 Upgrading to 5.x](#-upgrading-from-3x4x-to-5x) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
 
-<br><br>
+## 📝 Description <!-- omit in toc -->
-
-## 📝 Description
 
 ![](https://user-images.githubusercontent.com/12690315/41771577-8da4b968-7650-11e8-9524-cd162c422d9d.gif)
 
-This package utilizes the new APIs `MeshBake/MashTrailBake` (introduced with Unity 2018.2) to render particles through
+This package uses the new APIs `MeshBake/MeshTrailBake` (introduced in Unity 2018.2) to render particles through `CanvasRenderer`.  
-CanvasRenderer.  
+You can render, mask, and sort your `ParticleSystems` for UI without the need for an additional `Camera`, `RenderTexture`, or `Canvas`.
-You can render, mask, and sort your ParticleSystems for UI without the necessity of an additional Camera, RenderTexture,
-or Canvas.
 
-### Features
+- [📌 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)
+- [🔄 Upgrading from 3.x/4.x to 5.x](#-upgrading-from-3x4x-to-5x)
+  - [Breaking Changes](#breaking-changes)
+- [🚀 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)
+- [🛠 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)
 
-* Easy to use: The package is ready to use out of the box.
+<br><br>
-* Sort particle effects and other UI by sibling index.
-* No extra Camera, RenderTexture, or Canvas required.
-* Masking options for Mask or RectMask2D.
-* Support for the Trail module.
-* Support for CanvasGroup alpha.
-* No allocations needed to render particles.
-* Compatibility with overlay, camera space, and world space.
-* Support for Universal Render Pipeline (URP) and High Definition Render Pipeline (HDRP).
-* Support for disabling `Enter Play Mode Options > Reload Domain`.
-* Support for changing material property with AnimationClip (AnimatableProperty).  
-  ![AnimatableProperty.gif][AnimatableProperty.gif]
-* [4.0.0+] Support for 8+ materials.
-* [4.0.0+] Correct world space particle position adjustment when changing window size for standalone platforms (Windows,
-  MacOSX, and Linux).
-* [4.0.0+] Adaptive scaling for UI.
-* [4.0.0+] Mesh sharing group to improve performance.  
-  ![MeshSharing.gif][MeshSharing.gif]
-* [4.0.0+] Particle attractor component.  
-  ![ParticleAttractor.gif][ParticleAttractor.gif]
-* [4.1.0+] Relative/Absolute particle position mode.  
-  ![AbsolutePosition.gif][AbsolutePosition.gif]
 
-[AnimatableProperty.gif]: https://user-images.githubusercontent.com/12690315/53286323-2d94a980-37b0-11e9-8afb-c4a207805ff2.gif
+## 📌 Key Features
 
-[MeshSharing.gif]: https://user-images.githubusercontent.com/12690315/174311048-c882df81-6c34-4eba-b0aa-5645457692f1.gif
+* **Easy to use:** The package is ready to use out of the box.
-
+* **Sortable:** Sort particle effects and other UI elements by sibling index.
-[ParticleAttractor.gif]: https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif
+* **Maskable:** Supports `Mask` or `RectMask2D`.
-
+* **No extra components required:** No need for an additional `Camera`, `RenderTexture`, or `Canvas`.
-[AbsolutePosition.gif]: https://user-images.githubusercontent.com/12690315/175751579-5a2357e8-2ecf-4afd-83c8-66e9771bde39.gif
+* **Trail module support:** Fully supports the Trail module.
+* **CanvasGroup alpha support:** Integrates with `CanvasGroup` alpha.
+* **No allocations:** Efficiently renders particles without allocations.
+* **Any canvas render mode support:** Works with overlay, camera space, and world space.
+* **Any Render pipeline support:** Compatible with Universal Render Pipeline (URP) and High Definition Render Pipeline (HDRP).
+* **Disabling domain reload support:** Supports disabling `Enter Play Mode Options > Reload Domain`.
+* **Animatable material properties:** Supports changing material properties with AnimationClip (AnimatableProperty).  
+  ![AnimatableProperty.gif](https://user-images.githubusercontent.com/12690315/53286323-2d94a980-37b0-11e9-8afb-c4a207805ff2.gif)
+* **Multiple materials:** Supports 8+ materials.
+* **Correct positioning:** Adjusts world space particle positions correctly when changing window size for standalone platforms (Windows, MacOSX, and Linux).
+* **Adaptive scaling:** Provides adaptive scaling for UI (AutoScalingMode).
+* **Performance optimization:** Mesh sharing group to improve performance.  
+  <img alt="MeshSharing.gif" src="https://user-images.githubusercontent.com/12690315/174311048-c882df81-6c34-4eba-b0aa-5645457692f1.gif" width="450"/>
+* **Particle attractor:** Includes a particle attractor component.  
+  <img alt="ParticleAttractor.gif" src="https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif" width="450"/>
+* **Emission position mode:** Supports relative/absolute particle emission position modes.  
+  <img alt="AbsolutePosition.gif" src="https://user-images.githubusercontent.com/12690315/175751579-5a2357e8-2ecf-4afd-83c8-66e9771bde39.gif" width="450"/>
+* **Custom view size:** Fixes min/max particle size mismatch.  
+  ![CustomViewSize.gif](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/dd929959-1a37-420b-b13d-e849022b9c9d)
 
 <br><br>
 
@@ -76,30 +101,36 @@ or Canvas.
 
 [JMO]: https://assetstore.unity.com/publishers/1669
 
-
 <br><br>
 
 ## ⚙ Installation
 
-_This package requires Unity 2018.3 or later._
+_This package requires **Unity 2018.3 or later**._
 
 #### Install via OpenUPM
 
-This package is available on [OpenUPM](https://openupm.com) package registry.
+- This package is available on [OpenUPM](https://openupm.com) package registry.
-This is the preferred method of installation, as you can easily receive updates as they're released.
+- This is the preferred method of installation, as you can easily receive updates as they're released.
-
+- If you have [openupm-cli](https://github.com/openupm/openupm-cli) installed, then run the following command in your project's directory:
-If you have [openupm-cli](https://github.com/openupm/openupm-cli) installed, then run the following command in your
+  ```
-project's directory:
-
-```sh
   openupm add com.coffee.ui-particle
   ```
+- 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
+  ```
 
-#### Install via UPM (using Git URL)
+#### Install via UPM (with Package Manager UI)
 
-Navigate to your project's Packages folder and open the `manifest.json` file. Then add this package somewhere in
+- Click `Window > Package Manager` to open Package Manager UI.
-the `dependencies` block:
+- 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)
+- To update the package, change suffix `#{version}` to the target version.
+  - e.g. `https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.9.0`
 
+#### Install via UPM (Manually)
+
+- Open the `Packages/manifest.json` file in your project. Then add this package somewhere in the `dependencies` block:
   ```json
   {
     "dependencies": {
@@ -109,43 +140,58 @@ the `dependencies` block:
   }
   ```
 
-To update the package, change suffix `#{version}` to the target version.
+- 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#4.6.0",`
+#### Install as Embedded Package
 
-Or, use [UpmGitExtension](https://github.com/mob-sakai/UpmGitExtension) to install and update the package.
+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.
+- To update the package, you need to re-download it and replace the contents.
 
 <br><br>
 
-## ⚙ Upgrading from 3.x/4.x to 5.x
+## 🔄 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
 
-### UIParticle Component
+### Component: UIParticle
 
 `UIParticle` controls the ParticleSystems that are attached to its own game objects and child game objects.
 
-![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/3559df45-63e7-4c4c-9233-f455779efa29)
+![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/1cf5753b-33fc-4cef-91c3-413c515a954f)
 
-- **Maskable**: Does this graphic allow masking.
+- **Maskable**: Does this graphic allow maskable.
-- **Scale**: Scale the rendering. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.
+- **Scale**: Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.
 - **Animatable Properties**: If you want to update material properties (e.g., `_MainTex_ST`, `_Color`) in AnimationClip,
-  use this to mark the changes.
+  use this to mark as animatable.
 - **Mesh Sharing**: Particle simulation results are shared within the same group. A large number of the same effects can
   be displayed with a small load. When the `Random` toggle is enabled, it will be grouped randomly.
+  - **None:** Disable mesh sharing.
+  - **Auto:** Automatically select Primary/Replica.
+  - **Primary:** Provides particle simulation results to the same group.
+  - **Primary Simulator:** Primary, but do not render the particle (simulation only).
+  - **Replica:** Render simulation results provided by the primary.
 - **Position Mode**: Emission position mode.
-    - **Absolute:** Emit from the world position of the `ParticleSystem`.
+  - **Absolute:** The particles will be emitted from the world position.
-    - **Relative:** Emit from the scaled position of the `ParticleSystem`.
+  - **Relative:** The particles will be emitted from the scaled position.
-- **Auto Scaling**: `Transform.lossyScale` (=world scale) will be set to `(1, 1, 1)` on update. It prevents the
+- **Auto Scaling Mode**: How to automatically adjust when the Canvas scale is changed by the screen size or reference resolution.
-  root-Canvas scale from affecting the hierarchy-scaled `ParticleSystem`.
+  - **None:** Do nothing.
+  - **Transform:** Transform.lossyScale (=world scale) will be set to (1, 1, 1).
+  - **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.
 - **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
@@ -153,7 +199,7 @@ 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)
@@ -162,7 +208,7 @@ and z-position.
 
 <br>
 
-#### With Your Existing ParticleSystem Prefab
+### Usage 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)
@@ -171,7 +217,7 @@ and z-position.
 
 <br>
 
-#### With `Mask` or `RectMask2D` Component
+### Usage 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.
@@ -183,7 +229,7 @@ section.
 
 <br><br>
 
-### Script usage
+### Usage with Script
 
 ```cs
 // Instantiate ParticleSystem prefab with UIParticle on runtime.
@@ -202,14 +248,14 @@ uiParticle.Stop();
 
 <br><br>
 
-### UIParticleAttractor component
+### Component: UIParticleAttractor
 
 `UIParticleAttractor` attracts particles generated by the specified ParticleSystem.
 
-![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/ea6ae0ed-f9a8-437c-8baa-47526303391e)  
+![](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 System**: Attracts particles generated by the specified particle system.
+- **Particle Systems**: Attracts particles generated by the specified ParticleSystems.
 - **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.
@@ -354,7 +400,7 @@ 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/RectMask2D Component
+### How to Make a Custom Shader to Support `Mask` and `RectMask2D` Component
 
 <details>
 <summary>Shader tips</summary>

Packages/src/Runtime/Internal/Extensions/ComponentExtensions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using UnityEditor;
 using UnityEngine;
 using UnityEngine.Profiling;
@@ -11,6 +12,48 @@ namespace Coffee.UIParticleInternal
     /// </summary>
     internal static class ComponentExtensions
     {
+        /// <summary>
+        /// Get components in children of a specific type in the hierarchy of a GameObject.
+        /// </summary>
+        public static T[] GetComponentsInChildren<T>(this Component self, int depth)
+            where T : Component
+        {
+            var results = ListPool<T>.Rent();
+            self.GetComponentsInChildren_Internal(results, depth);
+            var array = results.ToArray();
+            ListPool<T>.Return(ref results);
+            return array;
+        }
+
+        /// <summary>
+        /// Get components in children of a specific type in the hierarchy of a GameObject.
+        /// </summary>
+        public static void GetComponentsInChildren<T>(this Component self, List<T> results, int depth)
+            where T : Component
+        {
+            results.Clear();
+            self.GetComponentsInChildren_Internal(results, depth);
+        }
+
+        private static void GetComponentsInChildren_Internal<T>(this Component self, List<T> results, int depth)
+            where T : Component
+        {
+            if (!self || results == null || depth < 0) return;
+
+            var tr = self.transform;
+            if (tr.TryGetComponent<T>(out var t))
+            {
+                results.Add(t);
+            }
+
+            if (depth - 1 < 0) return;
+            var childCount = tr.childCount;
+            for (var i = 0; i < childCount; i++)
+            {
+                tr.GetChild(i).GetComponentsInChildren_Internal(results, depth - 1);
+            }
+        }
+
         /// <summary>
         /// Get or add a component of a specific type to a GameObject.
         /// </summary>

Packages/src/Runtime/Internal/ProjectSettings/PreloadedProjectSettings.cs

@@ -13,7 +13,8 @@ namespace Coffee.UIParticleInternal
 {
     public abstract class PreloadedProjectSettings : ScriptableObject
 #if UNITY_EDITOR
-        , IPreprocessBuildWithReport
+    {
+        private class PreprocessBuildWithReport : IPreprocessBuildWithReport
         {
             int IOrderedCallback.callbackOrder => 0;
 
@@ -21,6 +22,7 @@ namespace Coffee.UIParticleInternal
             {
                 Initialize();
             }
+        }
 
         [InitializeOnLoadMethod]
         [InitializeOnEnterPlayMode]

Packages/src/Runtime/Internal/Utilities/FastAction.cs

@@ -20,6 +20,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Add(T rhs)
         {
+            if (rhs == null) return;
             Profiler.BeginSample("(COF)[FastAction] Add Action");
             var node = s_NodePool.Rent();
             node.Value = rhs;
@@ -32,6 +33,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Remove(T rhs)
         {
+            if (rhs == null) return;
             Profiler.BeginSample("(COF)[FastAction] Remove Action");
             var node = _delegates.Find(rhs);
             if (node != null)
@@ -63,6 +65,11 @@ namespace Coffee.UIParticleInternal
                 node = node.Next;
             }
         }
+
+        public void Clear()
+        {
+            _delegates.Clear();
+        }
     }
 
     /// <summary>

Packages/src/Runtime/Internal/Utilities/Logging.cs

@@ -1,11 +1,13 @@
 using System;
 using System.Text;
 using UnityEngine;
-using Conditional = System.Diagnostics.ConditionalAttribute;
 using Object = UnityEngine.Object;
 #if ENABLE_COFFEE_LOGGER
 using System.Reflection;
 using System.Collections.Generic;
+
+#else
+using Conditional = System.Diagnostics.ConditionalAttribute;
 #endif
 
 namespace Coffee.UIParticleInternal
@@ -139,6 +141,9 @@ namespace Coffee.UIParticleInternal
 
                 switch (tag)
                 {
+                    case string name:
+                        sb.Append(name);
+                        break;
                     case Type type:
                         AppendType(sb, type);
                         break;

Packages/src/Runtime/Internal/Utilities/MaterialRepository.cs

@@ -42,6 +42,34 @@ namespace Coffee.UIParticleInternal
             Profiler.EndSample();
         }
 
+        /// <summary>
+        /// Adds or retrieves a cached material based on the hash.
+        /// </summary>
+        public static void Get(Hash128 hash, ref Material material, string shaderName)
+        {
+            Profiler.BeginSample("(COF)[MaterialRepository] Get");
+            s_Repository.Get(hash, ref material, x => new Material(Shader.Find(x))
+            {
+                hideFlags = HideFlags.DontSave | HideFlags.NotEditable
+            }, shaderName);
+            Profiler.EndSample();
+        }
+
+
+        /// <summary>
+        /// Adds or retrieves a cached material based on the hash.
+        /// </summary>
+        public static void Get(Hash128 hash, ref Material material, string shaderName, string[] keywords)
+        {
+            Profiler.BeginSample("(COF)[MaterialRepository] Get");
+            s_Repository.Get(hash, ref material, x => new Material(Shader.Find(x.shaderName))
+            {
+                hideFlags = HideFlags.DontSave | HideFlags.NotEditable,
+                shaderKeywords = x.keywords
+            }, (shaderName, keywords));
+            Profiler.EndSample();
+        }
+
         /// <summary>
         /// Adds or retrieves a cached material based on the hash.
         /// </summary>

Packages/src/Runtime/Internal/Utilities/ObjectRepository.cs

@@ -8,10 +8,11 @@ namespace Coffee.UIParticleInternal
 {
     internal class ObjectRepository<T> where T : Object
     {
-        private readonly List<Entry> _cache = new List<Entry>();
+        private readonly Dictionary<Hash128, Entry> _cache = new Dictionary<Hash128, Entry>(8);
+        private readonly Dictionary<int, Hash128> _objectKey = new Dictionary<int, Hash128>(8);
         private readonly string _name;
         private readonly Action<T> _onRelease;
-        private readonly Stack<Entry> _pool = new Stack<Entry>();
+        private readonly Stack<Entry> _pool = new Stack<Entry>(8);
 
         public ObjectRepository(Action<T> onRelease = null)
         {
@@ -36,40 +37,33 @@ namespace Coffee.UIParticleInternal
             {
                 _onRelease = onRelease;
             }
+
+            for (var i = 0; i < 8; i++)
+            {
+                _pool.Push(new Entry());
+            }
         }
 
         public int count => _cache.Count;
 
         public void Clear()
         {
-            for (var i = 0; i < _cache.Count; i++)
+            foreach (var kv in _cache)
             {
-                var entry = _cache[i];
+                var entry = kv.Value;
                 if (entry == null) continue;
 
                 entry.Release(_onRelease);
+                _pool.Push(entry);
             }
 
             _cache.Clear();
+            _objectKey.Clear();
         }
 
         public bool Valid(Hash128 hash, T obj)
         {
-            // Find existing entry.
+            return _cache.TryGetValue(hash, out var entry) && entry.storedObject == obj;
-            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>
@@ -77,41 +71,8 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Get(Hash128 hash, ref T obj, Func<T> onCreate)
         {
-            // Find existing entry.
+            if (GetFromCache(hash, ref obj)) return;
-            Profiler.BeginSample("(COF)[ObjectRepository] Get > Find existing entry");
+            Add(hash, ref obj, onCreate());
-            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>
@@ -119,40 +80,60 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Get<TS>(Hash128 hash, ref T obj, Func<TS, T> onCreate, TS source)
         {
-            // Find existing entry.
+            if (GetFromCache(hash, ref obj)) return;
-            Profiler.BeginSample("(COF)[ObjectRepository] Get > Find existing entry");
+            Add(hash, ref obj, onCreate(source));
-            for (var i = 0; i < _cache.Count; ++i)
+        }
-            {
+
-                var entry = _cache[i];
+        private bool GetFromCache(Hash128 hash, ref T obj)
-                if (entry.hash != hash) continue;
+        {
+            // Find existing entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] GetFromCache");
+            if (_cache.TryGetValue(hash, out var entry))
+            {
+                if (!entry.storedObject)
+                {
+                    Release(ref entry.storedObject);
+                    Profiler.EndSample();
+                    return false;
+                }
 
-                // 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}");
+                    Logging.Log(_name, $"Get(total#{count}): {entry}");
                 }
 
                 Profiler.EndSample();
+                return true;
+            }
+
+            Profiler.EndSample();
+            return false;
+        }
+
+        private void Add(Hash128 hash, ref T obj, T newObject)
+        {
+            if (!newObject)
+            {
+                Release(ref obj);
+                obj = newObject;
                 return;
             }
 
-            Profiler.EndSample();
+            // Create and add a new entry.
-
+            Profiler.BeginSample("(COF)[ObjectRepository] Add");
-            // Create new entry.
-            Profiler.BeginSample("(COF)[ObjectRepository] Get > Create new entry");
             var newEntry = 0 < _pool.Count ? _pool.Pop() : new Entry();
-            newEntry.storedObject = onCreate(source);
+            newEntry.storedObject = newObject;
             newEntry.hash = hash;
             newEntry.reference = 1;
-            _cache.Add(newEntry);
+            _cache[hash] = newEntry;
-            Logging.Log(_name, $"Get(#{count}): {newEntry}");
+            _objectKey[newObject.GetInstanceID()] = hash;
-
+            Logging.Log(_name, $"<color=#03c700>Add</color>(total#{count}): {newEntry}");
             Release(ref obj);
-            obj = newEntry.storedObject;
+            obj = newObject;
             Profiler.EndSample();
         }
 
@@ -163,35 +144,45 @@ namespace Coffee.UIParticleInternal
         {
             if (ReferenceEquals(obj, null)) return;
 
+            // Find and release the entry.
             Profiler.BeginSample("(COF)[ObjectRepository] Release");
-            for (var i = 0; i < _cache.Count; i++)
+            var id = obj.GetInstanceID();
+            if (_objectKey.TryGetValue(id, out var hash)
+                && _cache.TryGetValue(hash, out var entry))
             {
-                var entry = _cache[i];
+                entry.reference--;
-
+                if (entry.reference <= 0 || !entry.storedObject)
-                if (entry.storedObject != obj)
                 {
-                    continue;
+                    Remove(entry);
                 }
-
+                else
-                if (--entry.reference <= 0)
                 {
-                    Profiler.BeginSample("(COF)[ObjectRepository] Release > RemoveAt");
+                    Logging.Log(_name, $"Release(total#{_cache.Count}): {entry}");
-                    _cache.RemoveAtFast(i);
-                    Logging.Log(_name, $"Release(#{_cache.Count}): {entry}");
-                    entry.Release(_onRelease);
-                    _pool.Push(entry);
-                    Profiler.EndSample();
-                    break;
                 }
-
+            }
-                Logging.Log(_name, $"Release(#{count}): {entry}");
+            else
-                break;
+            {
+                Logging.Log(_name, $"Release(total#{_cache.Count}): <color=red>Already released: {obj}</color>");
             }
 
             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;
@@ -211,7 +202,7 @@ namespace Coffee.UIParticleInternal
 
             public override string ToString()
             {
-                return $"h{(uint)hash.GetHashCode()} (#{reference}), {storedObject}";
+                return $"h{(uint)hash.GetHashCode()} (refs#{reference}), {storedObject}";
             }
         }
     }

Packages/src/Runtime/Internal/Utilities/UIExtraCallbacks.cs

@@ -64,11 +64,12 @@ namespace Coffee.UIParticleInternal
 
 #if UNITY_EDITOR
         [InitializeOnLoadMethod]
-#else
-        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
 #endif
+        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
         private static void InitializeOnLoad()
         {
+            Canvas.willRenderCanvases -= OnAfterCanvasRebuild;
+            s_IsInitializedAfterCanvasRebuild = false;
         }
 
         /// <summary>

Packages/src/Runtime/UIParticle.cs

@@ -58,12 +58,12 @@ namespace Coffee.UIExtensions
         [Obsolete]
         internal bool m_AbsoluteMode;
 
-        [Tooltip("Particle effect scale")]
+        [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(1, 1, 1);
 
-        [Tooltip("Animatable material properties.\n" +
+        [Tooltip("If you want to update material properties (e.g. _MainTex_ST, _Color) in AnimationClip, " +
-                 "If you want to change the material properties of the ParticleSystem in Animation, enable it.")]
+                 "use this to mark as animatable.")]
         [SerializeField]
         internal AnimatableProperty[] m_AnimatableProperties = new AnimatableProperty[0];
 
@@ -71,12 +71,13 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private List<ParticleSystem> m_Particles = new List<ParticleSystem>();
 
-        [Tooltip("Mesh sharing.\n" +
+        [Tooltip("Particle simulation results are shared within the same group. " +
-                 "None: disable mesh sharing.\n" +
+                 "A large number of the same effects can be displayed with a small load.\n" +
-                 "Auto: automatically select Primary/Replica.\n" +
+                 "None: Disable mesh sharing.\n" +
-                 "Primary: provides particle simulation results to the same group.\n" +
+                 "Auto: Automatically select Primary/Replica.\n" +
+                 "Primary: Provides particle simulation results to the same group.\n" +
                  "Primary Simulator: Primary, but do not render the particle (simulation only).\n" +
-                 "Replica: render simulation results provided by the primary.")]
+                 "Replica: Render simulation results provided by the primary.")]
         [SerializeField]
         private MeshSharing m_MeshSharing = MeshSharing.None;
 
@@ -88,28 +89,43 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private int m_GroupMaxId;
 
-        [Tooltip("Relative: The particles will be emitted from the scaled position of ParticleSystem.\n" +
+        [Tooltip("Emission position mode.\n" +
-                 "Absolute: The particles will be emitted from the world position of ParticleSystem.")]
+                 "Relative: The particles will be emitted from the scaled position.\n" +
+                 "Absolute: The particles will be emitted from the world position.")]
         [SerializeField]
         private PositionMode m_PositionMode = PositionMode.Relative;
 
         [SerializeField]
-        [Tooltip("Prevent the root-Canvas scale from affecting the hierarchy-scaled ParticleSystem.")]
         [Obsolete]
         internal bool m_AutoScaling;
 
         [SerializeField]
-        [Tooltip("Transform: Transform.lossyScale (=world scale) will be set to (1, 1, 1)." +
+        [Tooltip(
+            "How to automatically adjust when the Canvas scale is changed by the screen size or reference resolution.\n" +
+            "None: Do nothing.\n" +
+            "Transform: Transform.lossyScale (=world scale) will be set to (1, 1, 1).\n" +
             "UIParticle: UIParticle.scale will be adjusted.")]
         private AutoScalingMode m_AutoScalingMode = AutoScalingMode.Transform;
 
+        [SerializeField]
+        [Tooltip("Use a custom view.\n" +
+                 "Use this if the particles are not displayed correctly due to min/max particle size.")]
+        private bool m_UseCustomView;
+
+        [SerializeField]
+        [Tooltip("Custom view size.\n" +
+                 "Change the bake view size.")]
+        private float m_CustomViewSize = 10;
+
         [SerializeField]
         private bool m_Maskable = true;
 
         private readonly List<UIParticleRenderer> _renderers = new List<UIParticleRenderer>();
+        private Camera _bakeCamera;
         private Canvas _canvas;
         private int _groupId;
-        private Camera _orthographicCamera;
+        private bool _isScaleStored;
+        private Vector3 _storedScale;
         private DrivenRectTransformTracker _tracker;
 
         public RectTransform rectTransform => transform as RectTransform;
@@ -146,7 +162,8 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// Mesh sharing.
+        /// Particle simulation results are shared within the same group.
+        /// A large number of the same effects can be displayed with a small load.
         /// None: disable mesh sharing.
         /// Auto: automatically select Primary/Replica.
         /// Primary: provides particle simulation results to the same group.
@@ -189,9 +206,9 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// Particle position mode.
+        /// Emission position mode.
-        /// Relative: The particles will be emitted from the scaled position of the ParticleSystem.
+        /// Relative: The particles will be emitted from the scaled position.
-        /// Absolute: The particles will be emitted from the world position of the ParticleSystem.
+        /// Absolute: The particles will be emitted from the world position.
         /// </summary>
         public PositionMode positionMode
         {
@@ -204,6 +221,7 @@ namespace Coffee.UIExtensions
         /// Relative: The particles will be emitted from the scaled position of the ParticleSystem.
         /// Absolute: The particles will be emitted from the world position of the ParticleSystem.
         /// </summary>
+        [Obsolete("The absoluteMode is now obsolete. Please use the autoScalingMode instead.", false)]
         public bool absoluteMode
         {
             get => m_PositionMode == PositionMode.Absolute;
@@ -221,8 +239,12 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// Auto scaling mode.
+        /// How to automatically adjust when the Canvas scale is changed by the screen size or reference resolution.
+        /// <para/>
+        /// None: Do nothing.
+        /// <para/>
         /// Transform: Transform.lossyScale (=world scale) will be set to (1, 1, 1).
+        /// <para/>
         /// UIParticle: UIParticle.scale will be adjusted.
         /// </summary>
         public AutoScalingMode autoScalingMode
@@ -232,9 +254,34 @@ namespace Coffee.UIExtensions
             {
                 if (m_AutoScalingMode == value) return;
                 m_AutoScalingMode = value;
-                UpdateTracker();
+
+                if (autoScalingMode != AutoScalingMode.Transform && _isScaleStored)
+                {
+                    transform.localScale = _storedScale;
+                    _isScaleStored = false;
                 }
             }
+        }
+
+        /// <summary>
+        /// Use a custom view.
+        /// Use this if the particles are not displayed correctly due to min/max particle size.
+        /// </summary>
+        public bool useCustomView
+        {
+            get => m_UseCustomView;
+            set => m_UseCustomView = value;
+        }
+
+        /// <summary>
+        /// Custom view size.
+        /// Change the bake view size.
+        /// </summary>
+        public float customViewSize
+        {
+            get => m_CustomViewSize;
+            set => m_CustomViewSize = Mathf.Max(0.1f, value);
+        }
 
         internal bool useMeshSharing => m_MeshSharing != MeshSharing.None;
 
@@ -275,28 +322,12 @@ namespace Coffee.UIExtensions
         /// <summary>
         /// Particle effect scale.
         /// </summary>
-        public Vector3 scale3DForCalc => autoScalingMode == AutoScalingMode.UIParticle
+        public Vector3 scale3DForCalc => autoScalingMode == AutoScalingMode.Transform
-            ? m_Scale3D.GetScaled(canvasScale)
+            ? m_Scale3D
-            : m_Scale3D;
+            : m_Scale3D.GetScaled(canvasScale, transform.localScale);
 
         public List<ParticleSystem> particles => m_Particles;
 
-        /// <summary>
-        /// Get all base materials to render.
-        /// </summary>
-        public IEnumerable<Material> materials
-        {
-            get
-            {
-                for (var i = 0; i < _renderers.Count; i++)
-                {
-                    var r = _renderers[i];
-                    if (!r || !r.material) continue;
-                    yield return r.material;
-                }
-            }
-        }
-
         /// <summary>
         /// Paused.
         /// </summary>
@@ -308,8 +339,8 @@ namespace Coffee.UIExtensions
 
         protected override void OnEnable()
         {
+            _isScaleStored = false;
             ResetGroupId();
-            UpdateTracker();
             UIParticleUpdater.Register(this);
 
             //
@@ -330,7 +361,13 @@ namespace Coffee.UIExtensions
         /// </summary>
         protected override void OnDisable()
         {
-            UpdateTracker();
+            _tracker.Clear();
+            if (autoScalingMode == AutoScalingMode.Transform && _isScaleStored)
+            {
+                transform.localScale = _storedScale;
+            }
+
+            _isScaleStored = false;
             UIParticleUpdater.Unregister(this);
             _renderers.ForEach(r => r.Reset());
             _canvas = null;
@@ -359,15 +396,6 @@ namespace Coffee.UIExtensions
             _canvas = null;
         }
 
-#if UNITY_EDITOR
-        protected override void OnValidate()
-        {
-            base.OnValidate();
-            UpdateTracker();
-            UpdateRendererMaterial();
-        }
-#endif
-
         void ISerializationCallbackReceiver.OnBeforeSerialize()
         {
         }
@@ -458,6 +486,21 @@ namespace Coffee.UIExtensions
             isPaused = true;
         }
 
+        /// <summary>
+        /// Get all base materials to render.
+        /// </summary>
+        public void GetMaterials(List<Material> result)
+        {
+            if (result == null) return;
+
+            for (var i = 0; i < _renderers.Count; i++)
+            {
+                var r = _renderers[i];
+                if (!r || !r.material) continue;
+                result.Add(r.material);
+            }
+        }
+
         /// <summary>
         /// Refresh UIParticle using the ParticleSystem instance.
         /// </summary>
@@ -477,6 +520,9 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < childCount; i++)
             {
                 var go = transform.GetChild(i).gameObject;
+                if (go.TryGetComponent<Camera>(out var cam) && cam == _bakeCamera) continue;
+                if (go.TryGetComponent<UIParticleRenderer>(out var _)) continue;
+
                 go.SetActive(false);
                 if (destroyOldParticles)
                 {
@@ -583,12 +629,30 @@ namespace Coffee.UIExtensions
 
         internal void UpdateTransformScale()
         {
+            _tracker.Clear();
             canvasScale = canvas.rootCanvas.transform.localScale.Inverse();
             parentScale = transform.parent.lossyScale;
-            if (autoScalingMode != AutoScalingMode.Transform) return;
+            if (autoScalingMode != AutoScalingMode.Transform)
+            {
+                if (_isScaleStored)
+                {
+                    transform.localScale = _storedScale;
+                }
 
+                _isScaleStored = false;
+                return;
+            }
+
+            var currentScale = transform.localScale;
+            if (!_isScaleStored)
+            {
+                _storedScale = currentScale.IsVisible() ? currentScale : Vector3.one;
+                _isScaleStored = true;
+            }
+
+            _tracker.Add(this, rectTransform, DrivenTransformProperties.Scale);
             var newScale = parentScale.Inverse();
-            if (transform.localScale != newScale)
+            if (currentScale != newScale)
             {
                 transform.localScale = newScale;
             }
@@ -653,64 +717,55 @@ namespace Coffee.UIExtensions
         private Camera GetBakeCamera()
         {
             if (!canvas) return Camera.main;
-
+            if (!useCustomView && canvas.renderMode != RenderMode.ScreenSpaceOverlay && canvas.rootCanvas.worldCamera)
-            // When render mode is ScreenSpaceCamera or WorldSpace, use world camera.
-            var root = canvas.rootCanvas;
-            if (root.renderMode != RenderMode.ScreenSpaceOverlay)
             {
-                return root.worldCamera ? root.worldCamera : Camera.main;
+                return canvas.rootCanvas.worldCamera;
             }
 
-            // When render mode is ScreenSpaceOverlay, use orthographic-camera.
+            if (_bakeCamera)
-            if (!_orthographicCamera)
             {
-                // Find existing orthographic-camera.
+                _bakeCamera.orthographicSize = useCustomView ? customViewSize : 10;
+                return _bakeCamera;
+            }
+
+            // Find existing baking camera.
             var childCount = transform.childCount;
             for (var i = 0; i < childCount; i++)
             {
                 if (transform.GetChild(i).TryGetComponent<Camera>(out var cam)
-                        && cam.name == "[generated] UIParticleOverlayCamera")
+                    && cam.name == "[generated] UIParticle BakingCamera")
                 {
-                        _orthographicCamera = cam;
+                    _bakeCamera = cam;
                     break;
                 }
             }
 
-                // Create orthographic-camera.
+            // Create baking camera.
-                if (!_orthographicCamera)
+            if (!_bakeCamera)
             {
-                    var go = new GameObject("[generated] UIParticleOverlayCamera")
+                var go = new GameObject("[generated] UIParticle BakingCamera");
-                    {
-                        hideFlags = HideFlags.HideAndDontSave
-                    };
                 go.SetActive(false);
                 go.transform.SetParent(transform, false);
-                    _orthographicCamera = go.AddComponent<Camera>();
+                _bakeCamera = go.AddComponent<Camera>();
-                    _orthographicCamera.enabled = false;
-                }
             }
 
-            //
+            // Setup baking camera.
-            _orthographicCamera.orthographicSize = 10;
+            _bakeCamera.enabled = false;
-            _orthographicCamera.transform.SetPositionAndRotation(new Vector3(0, 0, -1000), Quaternion.identity);
+            _bakeCamera.orthographicSize = useCustomView ? customViewSize : 10;
-            _orthographicCamera.orthographic = true;
+            _bakeCamera.transform.SetPositionAndRotation(new Vector3(0, 0, -1000), Quaternion.identity);
-            _orthographicCamera.farClipPlane = 2000f;
+            _bakeCamera.orthographic = true;
+            _bakeCamera.farClipPlane = 2000f;
+            _bakeCamera.clearFlags = CameraClearFlags.Nothing;
+            _bakeCamera.cullingMask = 0; // Nothing
+            _bakeCamera.allowHDR = false;
+            _bakeCamera.allowMSAA = false;
+            _bakeCamera.renderingPath = RenderingPath.Forward;
+            _bakeCamera.useOcclusionCulling = false;
 
-            return _orthographicCamera;
+            _bakeCamera.gameObject.SetActive(false);
-        }
+            _bakeCamera.gameObject.hideFlags = HideFlags.HideAndDontSave;
 
-        private void UpdateTracker()
+            return _bakeCamera;
-        {
-#pragma warning disable CS0618 // Type or member is obsolete
-            if (!enabled || autoScalingMode != AutoScalingMode.Transform)
-#pragma warning restore CS0618 // Type or member is obsolete
-            {
-                _tracker.Clear();
-            }
-            else
-            {
-                _tracker.Add(this, rectTransform, DrivenTransformProperties.Scale);
-            }
         }
     }
 }

Packages/src/Runtime/UIParticleAttractor.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Coffee.UIParticleInternal;
 using UnityEngine;
 using UnityEngine.Events;
@@ -6,7 +7,7 @@ using UnityEngine.Events;
 namespace Coffee.UIExtensions
 {
     [ExecuteAlways]
-    public class UIParticleAttractor : MonoBehaviour
+    public class UIParticleAttractor : MonoBehaviour, ISerializationCallbackReceiver
     {
         public enum Movement
         {
@@ -22,8 +23,12 @@ 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;
@@ -45,7 +50,7 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private UnityEvent m_OnAttracted;
 
-        private UIParticle _uiParticle;
+        private List<UIParticle> _uiParticles = new List<UIParticle>();
 
         public float destinationRadius
         {
@@ -84,25 +89,46 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// The target ParticleSystem to attract.
+        /// The target ParticleSystems to attract. Use <see cref="AddParticleSystem"/> and
+        /// <see cref="RemoveParticleSystem"/> to modify the list.
         /// </summary>
-#if UNITY_EDITOR
+        public IReadOnlyList<ParticleSystem> particleSystems => m_ParticleSystems;
-        public new ParticleSystem particleSystem
+
-#else
+        public void AddParticleSystem(ParticleSystem ps)
-        public ParticleSystem particleSystem
-#endif
         {
-            get => m_ParticleSystem;
+            if (m_ParticleSystems == null)
-            set
             {
-                m_ParticleSystem = value;
+                m_ParticleSystems = new List<ParticleSystem>();
-                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);
         }
 
@@ -113,35 +139,45 @@ namespace Coffee.UIExtensions
 
         private void OnDestroy()
         {
-            _uiParticle = null;
+            _uiParticles = null;
-            m_ParticleSystem = null;
+            m_ParticleSystems = null;
         }
 
         internal void Attract()
         {
-            if (m_ParticleSystem == null) return;
+            // Collect UIParticle if needed (same size as m_ParticleSystems)
+            CollectUIParticlesIfNeeded();
 
-            var count = m_ParticleSystem.particleCount;
+            for (var particleIndex = 0; particleIndex < this.m_ParticleSystems.Count; particleIndex++)
-            if (count == 0) return;
+            {
+                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);
-            m_ParticleSystem.GetParticles(particles, count);
+                particleSystem.GetParticles(particles, count);
 
-            var dstPos = GetDestinationPosition();
+                var uiParticle = _uiParticles[particleIndex];
+                var dstPos = this.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)
+                    if (0f < p.remainingLifetime && Vector3.Distance(p.position, dstPos) < this.m_DestinationRadius)
                     {
                         p.remainingLifetime = 0f;
                         particles[i] = p;
 
-                    if (m_OnAttracted != null)
+                        if (this.m_OnAttracted != null)
                         {
                             try
                             {
-                            m_OnAttracted.Invoke();
+                                this.m_OnAttracted.Invoke();
                             }
                             catch (Exception e)
                             {
@@ -153,7 +189,7 @@ namespace Coffee.UIExtensions
                     }
 
                     // Calc attracting time
-                var delayTime = p.startLifetime * m_DelayRate;
+                    var delayTime = p.startLifetime * this.m_DelayRate;
                     var duration = p.startLifetime - delayTime;
                     var time = Mathf.Max(0, p.startLifetime - p.remainingLifetime - delayTime);
 
@@ -161,37 +197,38 @@ namespace Coffee.UIExtensions
                     if (time <= 0) continue;
 
                     // Attract
-                p.position = GetAttractedPosition(p.position, dstPos, duration, time);
+                    p.position = this.GetAttractedPosition(p.position, dstPos, duration, time);
                     p.velocity *= 0.5f;
                     particles[i] = p;
                 }
 
-            m_ParticleSystem.SetParticles(particles, count);
+                particleSystem.SetParticles(particles, count);
+            }
         }
 
-        private Vector3 GetDestinationPosition()
+        private Vector3 GetDestinationPosition(UIParticle uiParticle, ParticleSystem particleSystem)
         {
-            var isUI = _uiParticle && _uiParticle.enabled;
+            var isUI = uiParticle && uiParticle.enabled;
-            var psPos = m_ParticleSystem.transform.position;
+            var psPos = particleSystem.transform.position;
             var attractorPos = transform.position;
             var dstPos = attractorPos;
-            var isLocalSpace = m_ParticleSystem.IsLocalSpace();
+            var isLocalSpace = particleSystem.IsLocalSpace();
 
             if (isLocalSpace)
             {
-                dstPos = m_ParticleSystem.transform.InverseTransformPoint(dstPos);
+                dstPos = particleSystem.transform.InverseTransformPoint(dstPos);
             }
 
             if (isUI)
             {
-                var inverseScale = _uiParticle.parentScale.Inverse();
+                var inverseScale = uiParticle.parentScale.Inverse();
-                var scale3d = _uiParticle.scale3DForCalc;
+                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;
@@ -237,25 +274,59 @@ namespace Coffee.UIExtensions
             return Vector3.MoveTowards(current, target, speed);
         }
 
-        private void ApplyParticleSystem()
+        private void CollectUIParticlesIfNeeded()
         {
-            _uiParticle = null;
+            if (m_ParticleSystems.Count == 0 || _uiParticles.Count != 0) return;
-            if (m_ParticleSystem == null)
+
+            // Expand capacity
+            if (_uiParticles.Capacity < m_ParticleSystems.Capacity)
             {
+                _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
-                if (Application.isPlaying)
+        private void OnValidate()
+        {
+            _uiParticles.Clear();
+        }
 #endif
+
+        void ISerializationCallbackReceiver.OnBeforeSerialize()
         {
-                    Debug.LogError("No particle system attached to particle attractor script", this);
+            UpgradeIfNeeded();
         }
 
-                return;
+        void ISerializationCallbackReceiver.OnAfterDeserialize()
+        {
         }
 
-            _uiParticle = m_ParticleSystem.GetComponentInParent<UIParticle>(true);
+        private void UpgradeIfNeeded()
-            if (_uiParticle && !_uiParticle.particles.Contains(m_ParticleSystem))
         {
-                _uiParticle = null;
+            // Multiple ParticleSystems support: from 'm_ParticleSystem' to 'm_ParticleSystems'
+            if (m_ParticleSystem != null)
+            {
+                if (!m_ParticleSystems.Contains(m_ParticleSystem))
+                {
+                    m_ParticleSystems.Add(m_ParticleSystem);
+                }
+
+                m_ParticleSystem = null;
+                Debug.Log($"Upgraded!");
             }
         }
     }

Packages/src/Runtime/UIParticleRenderer.cs

@@ -25,10 +25,10 @@ namespace Coffee.UIExtensions
         private static readonly CombineInstance[] s_CombineInstances = { new CombineInstance() };
         private static readonly List<Material> s_Materials = new List<Material>(2);
         private static MaterialPropertyBlock s_Mpb;
-        private static readonly List<UIParticleRenderer> s_Renderers = new List<UIParticleRenderer>(8);
         private static readonly Vector3[] s_Corners = new Vector3[4];
         private bool _delay;
         private int _index;
+        private bool _isPrevStored;
         private bool _isTrail;
         private Bounds _lastBounds;
         private Material _materialForRendering;
@@ -153,6 +153,7 @@ namespace Coffee.UIExtensions
 
             MaterialRepository.Release(ref _modifiedMaterial);
             _materialForRendering = null;
+            _isPrevStored = false;
         }
 
         public static UIParticleRenderer AddRenderer(UIParticle parent, int index)
@@ -443,22 +444,25 @@ namespace Coffee.UIExtensions
 
             // Get grouped renderers.
             Profiler.BeginSample("[UIParticleRenderer] Set Mesh");
-            s_Renderers.Clear();
+            var renderers = ListPool<UIParticleRenderer>.Rent();
             if (_parent.useMeshSharing)
             {
-                UIParticleUpdater.GetGroupedRenderers(_parent.groupId, _index, s_Renderers);
+                UIParticleUpdater.GetGroupedRenderers(_parent.groupId, _index, renderers);
             }
 
-            for (var i = 0; i < s_Renderers.Count; i++)
+            for (var i = 0; i < renderers.Count; i++)
             {
-                if (s_Renderers[i] == this) continue;
+                var r = renderers[i];
+                if (r == this) continue;
 
-                s_Renderers[i].canvasRenderer.SetMesh(workerMesh);
+                r.canvasRenderer.SetMesh(workerMesh);
-                s_Renderers[i]._lastBounds = _lastBounds;
+                r._lastBounds = _lastBounds;
-                s_Renderers[i].canvasRenderer.materialCount = 1;
+                r.canvasRenderer.materialCount = 1;
-                s_Renderers[i].canvasRenderer.SetMaterial(materialForRendering, 0);
+                r.canvasRenderer.SetMaterial(materialForRendering, 0);
             }
 
+            ListPool<UIParticleRenderer>.Return(ref renderers);
+
             if (_parent.canRender)
             {
                 canvasRenderer.SetMesh(workerMesh);
@@ -469,8 +473,6 @@ namespace Coffee.UIExtensions
             }
 
             Profiler.EndSample();
-
-            s_Renderers.Clear();
         }
 
         public override void SetMaterialDirty()
@@ -508,7 +510,7 @@ namespace Coffee.UIExtensions
                 && _particleSystem.main.scalingMode == ParticleSystemScalingMode.Local
                 && _parent.canvas)
             {
-                scale = scale.GetScaled(_parent.canvas.transform.localScale);
+                scale = scale.GetScaled(_parent.canvas.rootCanvas.transform.localScale);
             }
 
             Profiler.EndSample();
@@ -563,7 +565,7 @@ namespace Coffee.UIExtensions
             var canvasScale = _parent.canvas ? _parent.canvas.scaleFactor : 1f;
             var resolutionChanged = _prevScreenSize != screenSize
                                     || !Mathf.Approximately(_prevCanvasScale, canvasScale);
-            if (resolutionChanged && isWorldSpace)
+            if (resolutionChanged && isWorldSpace && _isPrevStored)
             {
                 // Update particle array size and get particles.
                 var size = _particleSystem.particleCount;
@@ -589,6 +591,7 @@ namespace Coffee.UIExtensions
                 _delay = true;
                 _prevScale = scale;
                 _prevPsPos = psPos;
+                _isPrevStored = true;
             }
 
             _prevCanvasScale = canvas ? canvas.scaleFactor : 1f;
@@ -614,13 +617,15 @@ namespace Coffee.UIExtensions
             // get world position.
             var isLocalSpace = _particleSystem.IsLocalSpace();
             var psTransform = _particleSystem.transform;
+            var originLocalPosition = psTransform.localPosition;
+            var originLocalRotation = psTransform.localRotation;
             var originWorldPosition = psTransform.position;
             var originWorldRotation = psTransform.rotation;
             var emission = _particleSystem.emission;
             var rateOverDistance = emission.enabled
                                    && 0 < emission.rateOverDistance.constant
                                    && 0 < emission.rateOverDistanceMultiplier;
-            if (rateOverDistance && !paused)
+            if (rateOverDistance && !paused && _isPrevStored)
             {
                 // (For rate-over-distance emission,) Move to previous scaled position, simulate (delta = 0).
                 var prevScaledPos = isLocalSpace
@@ -636,7 +641,8 @@ namespace Coffee.UIExtensions
                 : originWorldPosition.GetScaled(scale.Inverse());
             psTransform.SetPositionAndRotation(scaledPos, originWorldRotation);
             _particleSystem.Simulate(deltaTime, false, false, false);
-            psTransform.SetPositionAndRotation(originWorldPosition, originWorldRotation);
+            psTransform.localPosition = originLocalPosition;
+            psTransform.localRotation = originLocalRotation;
         }
 
 #if UNITY_EDITOR

Packages/src/Runtime/UIParticleUpdater.cs

@@ -58,9 +58,8 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
                 var uip = s_ActiveParticles[i];
-                if (!uip || !uip.canvas || !uip.isPrimary || s_UpdatedGroupIds.Contains(uip.groupId)) continue;
+                if (!uip || !uip.canvas || !uip.isPrimary || !s_UpdatedGroupIds.Add(uip.groupId)) continue;
 
-                s_UpdatedGroupIds.Add(uip.groupId);
                 uip.UpdateTransformScale();
                 uip.UpdateRenderers();
             }
@@ -77,9 +76,8 @@ namespace Coffee.UIExtensions
                 {
                     uip.UpdateRenderers();
                 }
-                else if (!s_UpdatedGroupIds.Contains(uip.groupId))
+                else if (s_UpdatedGroupIds.Add(uip.groupId))
                 {
-                    s_UpdatedGroupIds.Add(uip.groupId);
                     uip.UpdateRenderers();
                 }
             }

Packages/src/Samples~/Demo/Scripts/UIParticle_Demo.cs

@@ -51,7 +51,11 @@ namespace Coffee.UIExtensions.Demo
 
         public void EnableAnimations(bool flag)
         {
+#if UNITY_2023_1_OR_NEWER
+            foreach (var animator in FindObjectsByType<Animator>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+#else
             foreach (var animator in FindObjectsOfType<Animator>())
+#endif
             {
                 animator.enabled = flag;
             }
@@ -79,7 +83,11 @@ namespace Coffee.UIExtensions.Demo
 
         public void UIParticle_Scale(float scale)
         {
+#if UNITY_2023_1_OR_NEWER
+            foreach (var uip in FindObjectsByType<UIParticle>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+#else
             foreach (var uip in FindObjectsOfType<UIParticle>())
+#endif
             {
                 uip.scale = scale;
             }
@@ -87,7 +95,11 @@ namespace Coffee.UIExtensions.Demo
 
         public void ParticleSystem_WorldSpaseSimulation(bool flag)
         {
+#if UNITY_2023_1_OR_NEWER
+            foreach (var p in FindObjectsByType<ParticleSystem>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+#else
             foreach (var p in FindObjectsOfType<ParticleSystem>())
+#endif
             {
                 var main = p.main;
                 main.simulationSpace = flag
@@ -123,7 +135,11 @@ namespace Coffee.UIExtensions.Demo
 
         public void ParticleSystem_SetScale(float scale)
         {
+#if UNITY_2023_1_OR_NEWER
+            foreach (var ps in FindObjectsByType<ParticleSystem>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+#else
             foreach (var ps in FindObjectsOfType<ParticleSystem>())
+#endif
             {
                 ps.transform.localScale = new Vector3(scale, scale, scale);
             }

Packages/src/Samples~/Demo/Sprites/UIParticle_Demo_Light_Frame.png.meta

@@ -42,12 +42,12 @@ TextureImporter:
   compressionQuality: 50
   spriteMode: 1
   spriteExtrude: 1
-  spriteMeshType: 1
+  spriteMeshType: 0
   alignment: 0
   spritePivot: {x: 0.5, y: 0.5}
   spritePixelsToUnits: 100
   spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
+  spriteGenerateFallbackPhysicsShape: 0
   alphaUsage: 1
   alphaIsTransparency: 1
   spriteTessellationDetail: -1

Packages/src/Samples~/Demo/Sprites/UIParticle_Demo_Move.png.meta

@@ -27,7 +27,7 @@ TextureImporter:
   generateCubemap: 6
   cubemapConvolution: 0
   seamlessCubemap: 0
-  textureFormat: 1
+  textureFormat: 4
   maxTextureSize: 2048
   textureSettings:
     serializedVersion: 2
@@ -42,12 +42,12 @@ TextureImporter:
   compressionQuality: 50
   spriteMode: 1
   spriteExtrude: 1
-  spriteMeshType: 1
+  spriteMeshType: 0
   alignment: 0
   spritePivot: {x: 0.5, y: 0.5}
   spritePixelsToUnits: 100
   spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
+  spriteGenerateFallbackPhysicsShape: 0
   alphaUsage: 1
   alphaIsTransparency: 1
   spriteTessellationDetail: -1

Packages/src/Samples~/Demo/Sprites/UIParticle_Demo_Star.png.meta

@@ -42,12 +42,12 @@ TextureImporter:
   compressionQuality: 50
   spriteMode: 1
   spriteExtrude: 1
-  spriteMeshType: 1
+  spriteMeshType: 0
   alignment: 0
   spritePivot: {x: 0.5, y: 0.5}
   spritePixelsToUnits: 100
   spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
+  spriteGenerateFallbackPhysicsShape: 0
   alphaUsage: 0
   alphaIsTransparency: 1
   spriteTessellationDetail: -1

Packages/src/Samples~/Demo/Sprites/UIParticle_Demo_Unity-chan.png.meta

@@ -27,7 +27,7 @@ TextureImporter:
   generateCubemap: 6
   cubemapConvolution: 0
   seamlessCubemap: 0
-  textureFormat: -1
+  textureFormat: 4
   maxTextureSize: 2048
   textureSettings:
     serializedVersion: 2
@@ -42,12 +42,12 @@ TextureImporter:
   compressionQuality: 50
   spriteMode: 1
   spriteExtrude: 1
-  spriteMeshType: 1
+  spriteMeshType: 0
   alignment: 0
   spritePivot: {x: 0.5, y: 0.5}
   spritePixelsToUnits: 100
   spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
+  spriteGenerateFallbackPhysicsShape: 0
   alphaUsage: 1
   alphaIsTransparency: 1
   spriteTessellationDetail: -1

Packages/src/Samples~/Demo/UIParticle_Demo.unity

@@ -14461,7 +14461,7 @@ Canvas:
   m_GameObject: {fileID: 1074082869}
   m_Enabled: 1
   serializedVersion: 3
-  m_RenderMode: 0
+  m_RenderMode: 1
   m_Camera: {fileID: 1023393581}
   m_PlaneDistance: 100
   m_PixelPerfect: 0

Packages/src/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": "5.0.0-preview.1",
+  "version": "4.9.0",
   "unity": "2018.2",
   "license": "MIT",
   "repository": {

ProjectSettings/ProjectSettings.asset

@@ -124,7 +124,7 @@ PlayerSettings:
   bundleVersion: 1.0
   preloadedAssets:
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-  - {fileID: 11400000, guid: be3e05903ef7041d39b3ef8ecdd47f08, type: 2}
+  - {fileID: 11400000, guid: e8e7744b163af4869b07b8f192c810ed, type: 2}
   metroInputSource: 0
   wsaTransparentSwapchain: 0
   m_HolographicPauseOnTrackingLoss: 1
@@ -520,7 +520,7 @@ PlayerSettings:
   webGLTemplate: APPLICATION:Default
   webGLAnalyzeBuildSize: 0
   webGLUseEmbeddedResources: 0
-  webGLCompressionFormat: 1
+  webGLCompressionFormat: 2
   webGLLinkerTarget: 0
   webGLThreadsSupport: 0
   scriptingDefineSymbols: