chore(release): 5.0.0-preview.2 [skip ci]

# [5.0.0-preview.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.1...v5.0.0-preview.2) (2024-06-20)

### Bug Fixes

* 'Resource ID out of range in GetResource' error in overlay rendering mode ([ff78b6f](ff78b6fe32)), closes [#308](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/308)
* `UIParticle.transform.localScale` does not scale particles ([491ee7b](491ee7b0c3)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
* despite not using the size module, particles become smaller based on their z position ([c96ddf2](c96ddf293e)), closes [#316](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/316)
* the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues ([a9c2b19](a9c2b19edf)), closes [#299](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/299) [#312](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/312)
* UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([63b24d8](63b24d8a8b)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
* UIParticle is scaled incorrectly with nested canvases ([c95d8c6](c95d8c6b17)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)

### Features

* remove overlay window (editor) ([fc3fbdd](fc3fbdd230))
* reset previous position on start play for world space simulation ([e741584](e741584507)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303)
* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([dfb94f4](dfb94f4bad))

.editorconfig

@@ -25,7 +25,6 @@ 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
 
@@ -87,9 +86,6 @@ 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
@@ -138,7 +134,7 @@ dotnet_naming_style._camel_case.capitalization = camel_case
 
 # Code style defaults
 dotnet_sort_system_directives_first = true
-csharp_preserve_single_line_statements = false
+csharp_preserve_single_line_statements = false:none
 csharp_prefer_static_local_function = true:suggestion
 csharp_prefer_simple_using_statement = false:none
 csharp_style_prefer_switch_expression = true:suggestion
@@ -190,7 +186,7 @@ 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 = false
+csharp_space_around_declaration_statements = do_not_ignore
 csharp_space_before_colon_in_inheritance_clause = true
 csharp_space_before_comma = false
 csharp_space_before_dot = false

.github/workflows/release.yml

@@ -1,12 +1,12 @@
 name: 🔖 Release
-run-name: 🔖 Release (${{ github.ref_name }})
 
 on:
   workflow_dispatch:
   push:
     branches:
       - release
-      - release-*
+      - release-preview
+      - release-v4
     tags-ignore:
       - "**"
 
@@ -27,10 +27,10 @@ jobs:
       split_to: ${{ steps.summary.outputs.split_to }}
     steps:
       - name: 🚚 Checkout (${{ github.ref_name }})
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
 
       - name: 🔖 Run semantic release
-        uses: cycjimmy/semantic-release-action@v5
+        uses: cycjimmy/semantic-release-action@v4
         id: release
         with:
           working_directory: Packages/src
@@ -38,7 +38,7 @@ jobs:
             @semantic-release/changelog
             @semantic-release/git
         env:
-          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+          GITHUB_TOKEN: ${{ github.token }}
 
       - id: summary
         run: |
@@ -50,12 +50,14 @@ jobs:
           if [ '${{ steps.release.outputs.new_release_published }}' = 'false' ]; then
             echo "No new release published." | tee -a $GITHUB_STEP_SUMMARY
           elif [ '${{ github.ref_name }}' = 'release' ]; then
-            echo "merge_to=develop" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+            echo "merge_to=develop" | tee -a $GITHUB_OUTPUT
-            echo "split_to=main" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+            echo "split_to=main" | tee -a $GITHUB_OUTPUT
-          else
+          elif [ '${{ github.ref_name }}' = 'release-preview' ]; then
-            channel=$(echo ${{ github.ref_name }} | sed 's/^release-//')
+            echo "merge_to=develop-preview" | tee -a $GITHUB_OUTPUT
-            echo "merge_to=develop-${channel}" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+            echo "split_to=preview" | tee -a $GITHUB_OUTPUT
-            echo "split_to=${channel}" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+          elif [ '${{ github.ref_name }}' = 'release-4.x' ]; then
+            echo "merge_to=develop-4.x" | tee -a $GITHUB_OUTPUT
+            echo "split_to=4.x" | tee -a $GITHUB_OUTPUT
           fi
 
   merge-to:
@@ -67,7 +69,7 @@ jobs:
       contents: write
     steps:
       - name: 🚚 Checkout (${{ needs.release.outputs.merge_to }})
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
         with:
           ref: ${{ needs.release.outputs.merge_to }}
           fetch-depth: 0
@@ -88,7 +90,7 @@ jobs:
       contents: write
     steps:
       - name: 🚚 Checkout (${{ needs.release.outputs.tag }})
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
         with:
           ref: ${{ needs.release.outputs.tag }}
           fetch-depth: 0

.github/workflows/test.yml

@@ -3,37 +3,28 @@
 #   UNITY_EMAIL: Unity user email to login
 #   UNITY_PASSWORD: Unity user password to login
 name: 🧪 Test
-run-name: 🧪 Test (${{ github.event.pull_request.title || github.ref_name }})
 
 env:
   # MINIMUM_VERSION: The minimum version of Unity.
   MINIMUM_VERSION: 2019.4
   # EXCLUDE_FILTER: The excluded versions of Unity.
-  EXCLUDE_FILTER: "(2020.2.0|2021.1|2023.3)"
+  EXCLUDE_FILTER: '(2020.2.0)'
-  PROJECT_PATH: .
 
 on:
   workflow_dispatch:
-    inputs:
-      usePeriodVersions:
-        description: "Use the period versions (.0f1, .10f1, 20f1, ...)."
-        required: false
-        default: "true"
   push:
     branches:
       - develop
-      - "develop-*"
+      - develop-preview
+      - develop-4.x
     tags:
       - "!*"
     paths-ignore:
-      - "**.md"
+      - "*.md"
-  pull_request_target:
+  pull_request:
     types:
       - opened
-      - reopened
       - synchronize
-    paths-ignore:
-      - "**.md"
 
 jobs:
   setup:
@@ -46,12 +37,9 @@ jobs:
         id: setup
         run: |
           echo "==== Target Unity Versions ===="
-          LATEST_VERSIONS=`npx unity-changeset@latest list --versions --latest-patch --min ${MINIMUM_VERSION} --json --all`
+          LATEST_VERSIONS=`npx unity-changeset list --versions --latest-patch --min ${MINIMUM_VERSION} --json --all`
-          if [ "${{ inputs.usePeriodVersions }}" = "true" ]; then
+          # ADDITIONAL_VERSIONS=`npx unity-changeset list --versions --grep '0f' --min ${MINIMUM_VERSION} --json`
-            ADDITIONAL_VERSIONS=`npx unity-changeset list --versions --grep '0f' --min ${MINIMUM_VERSION} --json`
-          else
           ADDITIONAL_VERSIONS=[]
-          fi
 
           VERSIONS=`echo "[${LATEST_VERSIONS}, ${ADDITIONAL_VERSIONS}]" \
             | jq -c '[ flatten | sort | unique | .[] | select( test("${{ env.EXCLUDE_FILTER }}") | not ) ]'`
@@ -60,57 +48,40 @@ jobs:
   test:
     name: 🧪 Run tests
     runs-on: ubuntu-latest
+    env:
+      UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
+      UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
+      UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
     permissions:
       checks: write
       contents: read
     needs: setup
     strategy:
       fail-fast: false
-      max-parallel: 6
+      max-parallel: 4
       matrix:
         unityVersion: ${{ fromJson(needs.setup.outputs.unityVersions) }}
     steps:
-      - name: 🚚 Checkout ($${{ github.ref }})
+      - name: 🚚 Checkout
-        if: github.event_name == 'push'
+        uses: actions/checkout@v4
-        uses: actions/checkout@v5
-
-      - name: 🚚 Checkout pull request (pull_request_target)
-        if: github.event_name == 'pull_request_target'
-        uses: actions/checkout@v5
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-
-      - name: 🚚 Marge pull request (pull_request_target)
-        if: github.event_name == 'pull_request_target'
-        run: |
-          git config user.name "GitHub Actions"
-          git config user.email "actions@github.com"
-          git rebase ${{ github.event.pull_request.base.sha }}
-          git log --oneline -n 10
 
       - name: 📥 Cache library
         uses: actions/cache@v4
         with:
-          path: ${{ env.PROJECT_PATH }}/Library
+          path: Library
-          key: ${{ env.PROJECT_PATH }}-Library-${{ matrix.unityVersion }}-${{ github.event.pull_request.head.sha || github.sha }}
+          key: Library-${{ matrix.unityVersion }}-${{ github.sha }}
           restore-keys: |
-            ${{ env.PROJECT_PATH }}-Library-${{ matrix.unityVersion }}-
+            Library-${{ matrix.unityVersion }}-
-            ${{ env.PROJECT_PATH }}-Library-
+            Library-
 
-      - name: 🛠️ Build Unity Project (Test)
+      - name: 🛠️ Build Unity Project
-        uses: game-ci/unity-builder@main
+        uses: game-ci/unity-builder@v4
         timeout-minutes: 45
         with:
           customImage: ghcr.io/mob-sakai/unity3d:${{ matrix.unityVersion }}
           targetPlatform: StandaloneLinux64
           allowDirtyBuild: true
           customParameters: -nographics
-          projectPath: ${{ env.PROJECT_PATH }}
-        env:
-          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
-          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
-          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
 
       - name: 🧪 Run tests
         uses: game-ci/unity-test-runner@v4
@@ -121,8 +92,4 @@ jobs:
           customParameters: -nographics
           checkName: ${{ matrix.unityVersion }} Test Results
           githubToken: ${{ github.token }}
-          projectPath: ${{ env.PROJECT_PATH }}
+          coverageOptions: "dontClear;generateHtmlReport;generateBadgeReport;pathFilters:+**/Packages/src/**;assemblyFilters:+<packages>,-*.Editor,-*.Test"
-        env:
-          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
-          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
-          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}

Assets/Demo/Cartoon FX & War FX Demo/CFXRF Demo.unity.meta

@@ -1,4 +0,0 @@
-fileFormatVersion: 2
-guid: e34a092899a9547189add96707de1b5a
-DefaultImporter:
-  userData: 

Assets/Demo/Cartoon FX & War FX Demo/CFX_Demo_With_UIParticle.cs

@@ -80,11 +80,7 @@ namespace Coffee.UIExtensions.Demo
                 .SelectMany(x => x.GetTypes())
                 .FirstOrDefault(x => x.Name == typeName);
 
-#if UNITY_2023_2_OR_NEWER
-            return type == null ? null : FindFirstObjectByType(type);
-#else
             return type == null ? null : FindObjectOfType(type);
-#endif
         }
 
         public void SetCanvasWidth(int width)

Assets/Demo/CustomView/UI-Cloud.mat

@@ -1,42 +0,0 @@
-%YAML 1.1
-%TAG !u! tag:unity3d.com,2011:
---- !u!21 &2100000
-Material:
-  serializedVersion: 8
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_Name: UI-Cloud
-  m_Shader: {fileID: 4800000, guid: 6b5e4f608f0684d10a4673a7e1cee0f3, type: 3}
-  m_ValidKeywords: []
-  m_InvalidKeywords:
-  - _COLORMODE_MULTIPRY
-  m_LightmapFlags: 4
-  m_EnableInstancingVariants: 0
-  m_DoubleSidedGI: 0
-  m_CustomRenderQueue: -1
-  stringTagMap: {}
-  disabledShaderPasses: []
-  m_SavedProperties:
-    serializedVersion: 3
-    m_TexEnvs:
-    - _MainTex:
-        m_Texture: {fileID: 2800000, guid: 48901c5d75f8c456aa8f4cd3a6b0160e, type: 3}
-        m_Scale: {x: 1, y: 1}
-        m_Offset: {x: 0, y: 0}
-    m_Ints: []
-    m_Floats:
-    - _ColorMask: 15
-    - _ColorMode: 0
-    - _DstBlend: 10
-    - _SrcBlend: 1
-    - _Stencil: 0
-    - _StencilComp: 8
-    - _StencilOp: 0
-    - _StencilReadMask: 255
-    - _StencilWriteMask: 255
-    - _UseUIAlphaClip: 0
-    m_Colors:
-    - _Color: {r: 1, g: 1, b: 1, a: 1}
-  m_BuildTextureStacks: []

Assets/Demo/CustomView/UI-Cloud.png.meta

@@ -1,147 +0,0 @@
-fileFormatVersion: 2
-guid: 48901c5d75f8c456aa8f4cd3a6b0160e
-TextureImporter:
-  internalIDToNameTable: []
-  externalObjects: {}
-  serializedVersion: 12
-  mipmaps:
-    mipMapMode: 0
-    enableMipMap: 0
-    sRGBTexture: 1
-    linearTexture: 0
-    fadeOut: 0
-    borderMipMap: 0
-    mipMapsPreserveCoverage: 0
-    alphaTestReferenceValue: 0.5
-    mipMapFadeDistanceStart: 1
-    mipMapFadeDistanceEnd: 3
-  bumpmap:
-    convertToNormalMap: 0
-    externalNormalMap: 0
-    heightScale: 0.25
-    normalMapFilter: 0
-  isReadable: 0
-  streamingMipmaps: 0
-  streamingMipmapsPriority: 0
-  vTOnly: 0
-  ignoreMasterTextureLimit: 0
-  grayScaleToAlpha: 0
-  generateCubemap: 6
-  cubemapConvolution: 0
-  seamlessCubemap: 0
-  textureFormat: 1
-  maxTextureSize: 2048
-  textureSettings:
-    serializedVersion: 2
-    filterMode: 1
-    aniso: 1
-    mipBias: 0
-    wrapU: 1
-    wrapV: 1
-    wrapW: 1
-  nPOTScale: 0
-  lightmap: 0
-  compressionQuality: 50
-  spriteMode: 1
-  spriteExtrude: 1
-  spriteMeshType: 1
-  alignment: 0
-  spritePivot: {x: 0.5, y: 0.5}
-  spritePixelsToUnits: 100
-  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
-  alphaUsage: 1
-  alphaIsTransparency: 1
-  spriteTessellationDetail: -1
-  textureType: 0
-  textureShape: 1
-  singleChannelComponent: 0
-  flipbookRows: 1
-  flipbookColumns: 1
-  maxTextureSizeSet: 0
-  compressionQualitySet: 0
-  textureFormatSet: 0
-  ignorePngGamma: 0
-  applyGammaDecoding: 1
-  cookieLightType: 1
-  platformSettings:
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-    buildTarget: DefaultTexturePlatform
-    maxTextureSize: 256
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  - serializedVersion: 3
-    buildTarget: Standalone
-    maxTextureSize: 256
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  - serializedVersion: 3
-    buildTarget: Android
-    maxTextureSize: 256
-    resizeAlgorithm: 0
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-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 1
-  - serializedVersion: 3
-    buildTarget: WebGL
-    maxTextureSize: 256
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  - serializedVersion: 3
-    buildTarget: Server
-    maxTextureSize: 256
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  spriteSheet:
-    serializedVersion: 2
-    sprites: []
-    outline: []
-    physicsShape: []
-    bones: []
-    spriteID: 5e97eb03825dee720800000000000000
-    internalID: 0
-    vertices: []
-    indices: 
-    edges: []
-    weights: []
-    secondaryTextures: []
-    nameFileIdTable: {}
-  spritePackingTag: 
-  pSDRemoveMatte: 0
-  pSDShowRemoveMatteOption: 0
-  userData: 
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-  assetBundleVariant: 

Assets/Demo/CustomView/UI-Color.shader

@@ -1,177 +0,0 @@
-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
-
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-
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Assets/Demo/Performance Demo/Scripts/UIParticle_PerformanceDemo.cs

@@ -1,4 +1,3 @@
-using Coffee.UIParticleInternal;
 using UnityEngine;
 using UnityEngine.Serialization;
 
@@ -47,7 +46,7 @@ namespace Coffee.UIExtensions.Demo
 
             if (!flag)
             {
-                foreach (var ps in Misc.FindObjectsOfType<ParticleSystem>())
+                foreach (var ps in FindObjectsOfType<ParticleSystem>())
                 {
                     ps.Play(false);
                 }
@@ -76,7 +75,7 @@ namespace Coffee.UIExtensions.Demo
 
         public void ParticleSystem_SetScale(float scale)
         {
-            foreach (var ps in Misc.FindObjectsOfType<ParticleSystem>())
+            foreach (var ps in FindObjectsOfType<ParticleSystem>())
             {
                 ps.transform.localScale = new Vector3(scale, scale, scale);
             }

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@@ -14,16 +14,15 @@ MonoBehaviour:
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     m_Arg2:
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Assets/ProjectSettings/SimpleSceneNavigator.prefab.meta

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+fileFormatVersion: 2
+guid: 46deb9632f6a14713b8460bd01e879c9
+PrefabImporter:
+  externalObjects: {}
+  userData: 
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Assets/ProjectSettings/UIParticle.asset

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   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: f22a23b9d98e440478697f4adf30e61c, type: 3}
-  m_Name: UIParticleProjectSettings
+  m_Name: UIParticle
   m_EditorClassIdentifier: 
-  m_EnableLinearToGamma: 1
+  m_LinearToGamma: 1
-  m_HideGeneratedObjects: 1

Assets/ProjectSettings/UIParticle.asset.meta

@@ -1,8 +1,8 @@
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+guid: e8e7744b163af4869b07b8f192c810ed
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   externalObjects: {}
-  mainObjectFileID: 2100000
+  mainObjectFileID: 11400000
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Assets/Tests/Editor/NewTestScript.cs

@@ -1,21 +1,16 @@
 using System.Collections;
-using Coffee.UIParticleInternal;
 using NUnit.Framework;
-using UnityEngine;
 using UnityEngine.TestTools;
 
 namespace Coffee.UIParticle.Editor.Tests
 {
     public class NewTestScript
     {
-        [TestCase(-1)]
+        // A Test behaves as an ordinary method
-        [TestCase(0)]
+        [Test]
-        [TestCase(2048)]
+        public void NewTestScriptSimplePasses()
-        [TestCase(3000)]
-        public void GetParticleArray(int requiredSize)
         {
-            var array = ParticleSystemExtensions.GetParticleArray(requiredSize);
+            // Use the Assert class to test conditions
-            Debug.Log($"requiredSize: {requiredSize}, array.Length: {array.Length}");
         }
 
         // A UnityTest behaves like a coroutine in Play Mode. In Edit Mode you can use

Packages/manifest.json

@@ -1,9 +1,10 @@
 {
   "dependencies": {
+    "com.unity.ide.rider": "3.0.27",
     "com.coffee.development": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/Development",
-    "com.coffee.minimal-resource": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/MinimalResource",
     "com.coffee.nano-monitor": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/NanoMonitor",
-    "com.unity.ide.rider": "3.0.31",
+    "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",
     "com.unity.modules.physics": "1.0.0"

Packages/packages-lock.json

@@ -5,14 +5,7 @@
       "depth": 0,
       "source": "git",
       "dependencies": {},
-      "hash": "3c280f1a8f4db5038b881ff07f270efd9638fa31"
+      "hash": "4a57c0a498ba7ce667290ec39510b1474030471a"
-    },
-    "com.coffee.minimal-resource": {
-      "version": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/MinimalResource",
-      "depth": 0,
-      "source": "git",
-      "dependencies": {},
-      "hash": "3c280f1a8f4db5038b881ff07f270efd9638fa31"
     },
     "com.coffee.nano-monitor": {
       "version": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/NanoMonitor",
@@ -21,7 +14,23 @@
       "dependencies": {
         "com.unity.ugui": "1.0.0"
       },
-      "hash": "3c280f1a8f4db5038b881ff07f270efd9638fa31"
+      "hash": "4a57c0a498ba7ce667290ec39510b1474030471a"
+    },
+    "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",
+      "depth": 0,
+      "source": "git",
+      "dependencies": {},
+      "hash": "01464178eec1e4dbe741c11c9baeb94a151c99ee"
     },
     "com.coffee.ui-particle": {
       "version": "file:src",
@@ -40,7 +49,7 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.ide.rider": {
-      "version": "3.0.31",
+      "version": "3.0.27",
       "depth": 0,
       "source": "registry",
       "dependencies": {

Packages/src/CHANGELOG.md

@@ -1,198 +1,35 @@
-## [4.12.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.12.0...v4.12.1) (2026-03-24)
+# [5.0.0-preview.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v5.0.0-preview.1...v5.0.0-preview.2) (2024-06-20)
 
 
 ### Bug Fixes
 
-* ignore "EditorOnly" tagged gameObjects on refresh ([031d46a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/031d46a3216c942d2d1a6ccfadf5f0b9e3ce3006))
+* 'Resource ID out of range in GetResource' error in overlay rendering mode ([ff78b6f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ff78b6fe32ceed8ddad50e63dcb7a202eab95266)), closes [#308](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/308)
-
+* `UIParticle.transform.localScale` does not scale particles ([491ee7b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/491ee7b0c3e528e1e577ae5ff2588d7c3bd8ecdb)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-# [4.12.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.4...v4.12.0) (2026-03-24)
+* despite not using the size module, particles become smaller based on their z position ([c96ddf2](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c96ddf293e855f7ebccaaaf3b112092955545e61)), closes [#316](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/316)
+* the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues ([a9c2b19](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a9c2b19edf00e1c86c928ef23405906952ede852)), closes [#299](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/299) [#312](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/312)
+* UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([63b24d8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/63b24d8a8b478b3165733ece3eec524e88b28855)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
+* UIParticle is scaled incorrectly with nested canvases ([c95d8c6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c95d8c6b1774396ff252d13121ad32a3cab0fe5c)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
 
 
 ### Features
 
-* explicit null checks ([5384f61](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5384f61c569e9f78ff9d5b45acfc6f5c2f021a87))
+* remove overlay window (editor) ([fc3fbdd](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fc3fbdd230595ad3471875ec6fec384a3dad0d17))
+* reset previous position on start play for world space simulation ([e741584](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e7415845074143abae23e3ae7eedc767a01d020d)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303)
+* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([dfb94f4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/dfb94f4badfb3035a4374579c53293460b4fd946))
 
-## [4.11.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.3...v4.11.4) (2025-12-24)
+# [5.0.0-preview.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.6...v5.0.0-preview.1) (2024-05-23)
-
-
-### Bug Fixes
-
-* add early return for case where subEmitter module is disabled ([d1386a1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/d1386a12216743a6e09f1b9b87bea1dfcf7702e4))
-* avoid endless loop ([eb2e862](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/eb2e862e80e549c8cf16ddfed776c101c2413bac)), closes [#392](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/392)
-
-## [4.11.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.2...v4.11.3) (2025-10-14)
-
-
-### Bug Fixes
-
-* fix icon ([a9461ec](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a9461ecb4d40d7fe878e12465d6e38faae7ae65b))
-* fix URL link in README ([1c8c65d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1c8c65d25e7f6fe7b1d20da4461333df8fc7578e)), closes [#376](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/376)
-* fix: second and subsequent bursts not displayed when world simulation and non-looping ([df2f3ca](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/df2f3caafbe279f1457d74f8183cb561ac14aa17)), closes [#326](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/326)
-* UIParticle in canvas with 0f-0.01f alpha value does not start to play until alpha value is greater than 0.01f, causes play calls to be delayed unintentionally if canvas alpha value is set to mentioned value range ([38aec2e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/38aec2ea1afd77677d629c86665a3342d92e49d9))
-
-## [4.11.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.1...v4.11.2) (2025-03-15)
-
-
-### Bug Fixes
-
-* IL2CPP build fails on older versions of Unity ([0da6525](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0da652520cd165b43de7404c0b0ab1fbcf9349d1))
-* NRE on enable ([0cff50e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0cff50ef696aa53fb7c46a9a737b7cf3a05b7b9b)), closes [#359](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/359)
-
-## [4.11.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.0...v4.11.1) (2025-02-21)
-
-
-### Bug Fixes
-
-* component icons will no longer be displayed in the scene view ([6dfbdae](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/6dfbdae38d3822ab9c2c6f0e4ca1ca32ee98a239))
-
-# [4.11.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.7...v4.11.0) (2025-02-21)
 
 
 ### Features
 
-* add 'TimeScaleMultiplier' option ([925af0b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/925af0b6046f65f23a778f67cefa8ff9cbedb513))
+* add project settings for UIParticle ([b6e6185](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b6e6185c521fef0f118f61cfdfdac07b87555c01))
+* change the default value of `UIParticle.scale` from `10` to `1` ([1b3c0f9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1b3c0f92dcc6a1974d1ea074821e5264200e9711)), closes [#310](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/310)
+* UIParticle no longer inherits from MaskableGraphic ([b6d921b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b6d921b3e47f749b5028d22b0e89b6eb3a1af7de))
 
-## [4.10.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.6...v4.10.7) (2025-01-14)
 
+### BREAKING CHANGES
 
-### Bug Fixes
+* Some members inherited from MaskableGraphic will no longer be available.
-
-* editor crashed on exit play mode (editor, windows) ([47ee45c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/47ee45cbbe651a8f87ca2b8a3948f8b88db8211e)), closes [#351](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/351)
-
-## [4.10.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.5...v4.10.6) (2025-01-03)
-
-
-### Bug Fixes
-
-* sub-emitter particles may not render correctly in certain scenarios ([8276684](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/8276684c3b1646f0490ed64557547ba15281664a)), closes [#348](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/348)
-* sub-emitter's `inherit velocity` module doubles at runtime ([67de3d1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/67de3d1bd3e16dc9b564625cb990c53d75769506)), closes [#349](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/349)
-
-## [4.10.5](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.4...v4.10.5) (2024-12-23)
-
-
-### Bug Fixes
-
-* '3D' scale toggle in the inspector does not keep on reload ([934f4b8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/934f4b8f1c61f8ff20228d0ebcea9f636a3758ed)), closes [#346](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/346)
-
-## [4.10.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.3...v4.10.4) (2024-12-19)
-
-
-### Bug Fixes
-
-* rendering issues when playing with opening a prefab stage ([95235a9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/95235a929b82cf681365ed6eba837d857f83e3d2)), closes [#345](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/345)
-
-## [4.10.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.2...v4.10.3) (2024-11-20)
-
-
-### Bug Fixes
-
-* if not configured as a preloaded asset, the project settings asset will be regenerated ([abe0948](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/abe09485f65dd4efd18e74675e752e0213bdf3be)), closes [#342](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/342)
-
-## [4.10.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.1...v4.10.2) (2024-11-01)
-
-
-### Bug Fixes
-
-* trail incorrect offset ([afe00a1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/afe00a1dde80eb1c0a7bb668b75f4c3733d3fa43)), closes [#335](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/335)
-
-## [4.10.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.0...v4.10.1) (2024-09-29)
-
-
-### Bug Fixes
-
-* mainTex will be ignored ([2ee69d0](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2ee69d04245fabce185f67dc9bd68c870e556564))
-
-# [4.10.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.9.1...v4.10.0) (2024-09-29)
-
-
-### Bug Fixes
-
-* component icon is not set ([5ff6ec8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5ff6ec815a174de5d3f16d424f1204c60912a8d8))
-
-
-### Features
-
-* add project settings ([1ce4e31](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1ce4e31a9681bf1a201d2723c8d97e07ecc16592))
-
-## [4.9.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.9.0...v4.9.1) (2024-08-07)
-
-
-### Bug Fixes
-
-* ParticleSystem trails gain offset on parent canvas change ([2a1cd50](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2a1cd502b452b5b56edf8bcfe91adf99d1bb5147)), closes [#323](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/323)
-
-# [4.9.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.8.1...v4.9.0) (2024-07-18)
-
-
-### Features
-
-* ParticleAttractor supports multiple ParticleSystems ([3834780](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3834780fdb43443fe6e1ef89df54d26a24d62a91))
-
-## [4.8.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.8.0...v4.8.1) (2024-06-27)
-
-
-### Bug Fixes
-
-* remove debug code ([669deb4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/669deb41d4ac589d9db93b29bc8e95383e7f28a5))
-
-# [4.8.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.7.2...v4.8.0) (2024-06-27)
-
-
-### Bug Fixes
-
-* generated baking-camera object remains in the prefab or scene (again) ([de35cba](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/de35cba34c6312c1405ed522e9927c620c78e72d))
-* SetParticleSystemInstance/Prefab APIs destroy generated objects ([ae3f3a8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ae3f3a8e62cc733420354d237ab765ac777127c8))
-
-
-### Features
-
-* add 'custom view' option. ([a703c29](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a703c2921ca08c2280d0c8fde01e4c0b33b5c69e))
-* remove overlay window (editor) ([8358170](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/835817049f4fcf00dd2bf98dbada14f041ad3544))
-* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` (again) ([88a970d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/88a970d93a2b69cf011d86bd1807569e90538e0e))
-* the rendering order list in inspector is now more compact ([be90172](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/be901724e064befacf617f4940b0331e1d31e1ca))
-
-## [4.7.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.7.1...v4.7.2) (2024-06-21)
-
-
-### Bug Fixes
-
-* generated baking-camera object remains in the prefab or scene ([0bb8438](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0bb843830197d8c1252232928becc211c0ada08d))
-
-## [4.7.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.7.0...v4.7.1) (2024-06-20)
-
-
-### Bug Fixes
-
-* despite not using the size module, particles become smaller based on their z position ([a8ed6e6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a8ed6e68584e1d9e45ed852eefcc03979ea7e0e1)), closes [#316](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/316)
-
-# [4.7.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.8...v4.7.0) (2024-06-19)
-
-
-### Bug Fixes
-
-* `UIParticle.transform.localScale` does not scale particles ([1d40e24](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1d40e24c742741e97f03c55468ccb1e505341133)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-* UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([54a4b1c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/54a4b1cdfd06400c7be89c1ee704bb42a659c7c2)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-* UIParticle is scaled incorrectly with nested canvases ([f26920f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f26920f9825547222a4afbb31cc5dc5a002c3e9b)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
-
-
-### Features
-
-* reset previous position on start play for world space simulation ([3880484](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3880484ce5190c42fc79c81d0b69e3fbeda09dd0)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303)
-* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([5505247](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5505247a94a929ff89635fde512a9b95691e0043))
-
-## [4.6.8](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.7...v4.6.8) (2024-06-14)
-
-
-### Bug Fixes
-
-* 'Resource ID out of range in GetResource' error in overlay rendering mode ([05286ce](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/05286cedfd17b1a0cb90a5e918513644f47cd831)), closes [#308](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/308)
-
-## [4.6.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.6...v4.6.7) (2024-05-24)
-
-
-### Bug Fixes
-
-* the ParticleSystem's localPosition drifts at certain scales due to floating-point precision issues ([e924eb4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e924eb45968a112347471cabaeabc274e4c37ce4)), closes [#299](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/299) [#312](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/312)
 
 ## [4.6.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.5...v4.6.6) (2024-05-23)
 

Packages/src/Editor/AnimatablePropertyEditor.cs

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

Packages/src/Editor/Internal.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 157d70e6cb69d4581b4ed450c7ffd33d
+guid: 3e440931f761e4e888510a4e6045287a
 folderAsset: yes
 DefaultImporter:
   externalObjects: {}

Packages/src/Editor/UIParticleEditor.cs

@@ -2,19 +2,19 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text.RegularExpressions;
 using UnityEditor;
-using UnityEditor.UI;
 using UnityEditorInternal;
 using UnityEngine;
-using UnityEngine.Profiling;
 using UnityEngine.UI;
-using Coffee.UIParticleInternal;
+
 #if UNITY_2021_2_OR_NEWER
 using UnityEditor.Overlays;
 #else
 using System;
 using System.Reflection;
+using Coffee.UIParticleInternal;
 using Object = UnityEngine.Object;
 #endif
+
 #if UNITY_2021_2_OR_NEWER
 using UnityEditor.SceneManagement;
 
@@ -26,31 +26,20 @@ namespace Coffee.UIExtensions
 {
     [CustomEditor(typeof(UIParticle))]
     [CanEditMultipleObjects]
-    internal class UIParticleEditor : GraphicEditor
+    internal class UIParticleEditor : Editor
     {
-        internal class State : ScriptableSingleton<State>
-        {
-            public bool is3DScaleMode;
-        }
-
         //################################
         // Constant or Static Members.
         //################################
-        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 readonly GUIContent s_ContentPrimary = new GUIContent("Primary");
+        private static bool s_XYZMode;
-        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 SerializedProperty _maskable;
         private SerializedProperty _scale3D;
@@ -60,12 +49,8 @@ namespace Coffee.UIExtensions
         private SerializedProperty _groupMaxId;
         private SerializedProperty _positionMode;
         private SerializedProperty _autoScalingMode;
-        private SerializedProperty _useCustomView;
-        private SerializedProperty _customViewSize;
-        private SerializedProperty _timeScaleMultiplier;
         private ReorderableList _ro;
         private bool _showMax;
-        private bool _is3DScaleMode;
 
         private static readonly HashSet<Shader> s_Shaders = new HashSet<Shader>();
 #if UNITY_2018 || UNITY_2019
@@ -87,10 +72,8 @@ namespace Coffee.UIExtensions
         /// <summary>
         /// This function is called when the object becomes enabled and active.
         /// </summary>
-        protected override void OnEnable()
+        private void OnEnable()
         {
-            base.OnEnable();
-
             _maskable = serializedObject.FindProperty("m_Maskable");
             _scale3D = serializedObject.FindProperty("m_Scale3D");
             _animatableProperties = serializedObject.FindProperty("m_AnimatableProperties");
@@ -99,44 +82,31 @@ 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");
-            _timeScaleMultiplier = serializedObject.FindProperty("m_TimeScaleMultiplier");
 
             var sp = serializedObject.FindProperty("m_Particles");
             _ro = new ReorderableList(sp.serializedObject, sp, true, true, true, true)
             {
-                elementHeightCallback = index =>
+                elementHeight = EditorGUIUtility.singleLineHeight * 3 + 4,
-                {
+                elementHeightCallback = _ => 3 * (EditorGUIUtility.singleLineHeight + 2),
-                    var ps = sp.GetArrayElementAtIndex(index).objectReferenceValue as ParticleSystem;
-                    var materialCount = 0;
-                    if (ps != null && ps.TryGetComponent<ParticleSystemRenderer>(out var psr))
-                    {
-                        materialCount = psr.sharedMaterials.Length;
-                    }
-
-                    return (materialCount + 1) * (EditorGUIUtility.singleLineHeight + 2);
-                },
                 drawElementCallback = (rect, index, _, __) =>
                 {
-                    rect.y += 2;
+                    EditorGUI.BeginDisabledGroup(sp.hasMultipleDifferentValues);
+                    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 == null || !ps.TryGetComponent<ParticleSystemRenderer>(out var psr)) return;
-
                     rect.x += 15;
                     rect.width -= 15;
-                    var materials = new SerializedObject(psr).FindProperty("m_Materials");
+                    var ps = p.objectReferenceValue as ParticleSystem;
-                    var count = Mathf.Min(materials.arraySize, 2);
+                    var materials = ps
-                    for (var i = 0; i < count; i++)
+                        ? new SerializedObject(ps.GetComponent<ParticleSystemRenderer>()).FindProperty("m_Materials")
-                    {
+                        : null;
-                        rect.y += rect.height + 2;
+                    rect.y += rect.height + 1;
-                        EditorGUI.PropertyField(rect, materials.GetArrayElementAtIndex(i), s_ContentMaterials[i]);
+                    MaterialField(rect, s_ContentMaterial, materials, 0);
-                    }
+                    rect.y += rect.height + 1;
-
+                    MaterialField(rect, s_ContentTrailMaterial, materials, 1);
-                    if (materials.serializedObject.hasModifiedProperties)
+                    EditorGUI.EndDisabledGroup();
+                    if (materials != null && materials.serializedObject.hasModifiedProperties)
                     {
                         materials.serializedObject.ApplyModifiedProperties();
                     }
@@ -170,18 +140,19 @@ namespace Coffee.UIExtensions
                     uip.RefreshParticles(uip.particles);
                 }
             }
+        }
 
-            // Initialize 3D scale mode.
+        private static void MaterialField(Rect rect, GUIContent label, SerializedProperty sp, int index)
-            _is3DScaleMode = State.instance.is3DScaleMode;
-            if (!_is3DScaleMode)
         {
-                var x = _scale3D.FindPropertyRelative("x");
+            if (sp == null || sp.arraySize <= index)
-                var y = _scale3D.FindPropertyRelative("y");
+            {
-                var z = _scale3D.FindPropertyRelative("z");
+                EditorGUI.BeginDisabledGroup(true);
-                _is3DScaleMode = !Mathf.Approximately(x.floatValue, y.floatValue) ||
+                EditorGUI.ObjectField(rect, label, null, typeof(Material), true);
-                                 !Mathf.Approximately(y.floatValue, z.floatValue) ||
+                EditorGUI.EndDisabledGroup();
-                                 y.hasMultipleDifferentValues ||
+            }
-                                 z.hasMultipleDifferentValues;
+            else
+            {
+                EditorGUI.PropertyField(rect, sp.GetArrayElementAtIndex(index), label);
             }
         }
 
@@ -191,9 +162,8 @@ namespace Coffee.UIExtensions
         public override void OnInspectorGUI()
         {
             var current = target as UIParticle;
-            if (current == null) return;
+            if (!current) return;
 
-            Profiler.BeginSample("(UIP:E) OnInspectorGUI");
             serializedObject.Update();
 
             // Maskable
@@ -201,16 +171,17 @@ namespace Coffee.UIExtensions
 
             // Scale
             EditorGUI.BeginDisabledGroup(!_meshSharing.hasMultipleDifferentValues && _meshSharing.intValue == 4);
-            if (DrawFloatOrVector3Field(_scale3D, _is3DScaleMode) != _is3DScaleMode)
+            s_XYZMode = DrawFloatOrVector3Field(_scale3D, s_XYZMode);
-            {
-                State.instance.is3DScaleMode = _is3DScaleMode = !_is3DScaleMode;
-            }
-
             EditorGUI.EndDisabledGroup();
 
             // AnimatableProperties
-            current.GetMaterials(s_TempMaterials);
+            var mats = current.particles
-            AnimatablePropertyEditor.Draw(_animatableProperties, s_TempMaterials);
+                .Where(x => x)
+                .Select(x => x.GetComponent<ParticleSystemRenderer>().sharedMaterial)
+                .Where(x => x)
+                .ToArray();
+
+            AnimatablePropertyEditor.Draw(_animatableProperties, mats);
 
             // Mesh sharing
             EditorGUI.BeginChangeCheck();
@@ -218,45 +189,26 @@ namespace Coffee.UIExtensions
             if (EditorGUI.EndChangeCheck())
             {
                 serializedObject.ApplyModifiedProperties();
-                foreach (var t in targets)
+                foreach (var uip in targets.OfType<UIParticle>())
-                {
-                    if (t is UIParticle uip)
                 {
                     uip.ResetGroupId();
                 }
             }
-            }
 
             // Position Mode
             EditorGUILayout.PropertyField(_positionMode);
 
             // Auto Scaling
-            EditorGUILayout.PropertyField(_autoScalingMode);
+            DrawAutoScaling(_autoScalingMode, targets.OfType<UIParticle>());
-
-            // 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);
-            }
-
-            // Time Scale Multiplier
-            EditorGUILayout.PropertyField(_timeScaleMultiplier);
 
             // 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);
@@ -264,10 +216,9 @@ namespace Coffee.UIExtensions
             }
 
             // Non-UI built-in shader is not supported.
-            Profiler.BeginSample("(UIP:E) Non-UI built-in shader is not supported.");
+            foreach (var mat in current.materials)
-            foreach (var mat in s_TempMaterials)
             {
-                if (mat == null || mat.shader == null) continue;
+                if (!mat || !mat.shader) continue;
                 var shader = mat.shader;
                 if (IsBuiltInObject(shader) && !shader.name.StartsWith("UI/"))
                 {
@@ -278,18 +229,15 @@ 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 s_TempMaterials)
+                foreach (var mat in current.materials)
                 {
-                    if (mat == null || mat.shader == null) continue;
+                    if (!mat || !mat.shader) continue;
                     var shader = mat.shader;
-                    if (!s_Shaders.Add(shader)) continue;
+                    if (s_Shaders.Contains(shader)) continue;
-
+                    s_Shaders.Add(shader);
                     foreach (var propName in s_MaskablePropertyNames)
                     {
                         if (mat.HasProperty(propName)) continue;
@@ -303,9 +251,7 @@ 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.";
@@ -344,14 +290,12 @@ namespace Coffee.UIExtensions
                 }
             }
 #endif
-            Profiler.EndSample();
         }
 
-        private static bool IsBuiltInObject(Object obj)
+        private bool IsBuiltInObject(Object obj)
         {
-            return AssetDatabase.IsMainAsset(obj)
+            return AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out var guid, out long _)
-                   && AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out var guid, out long _)
+                   && Regex.IsMatch(guid, "^0{16}.0{15}$", RegexOptions.Compiled);
-                   && s_RegexBuiltInGuid.IsMatch(guid);
         }
 
 #if UNITY_2018 || UNITY_2019
@@ -445,7 +389,7 @@ namespace Coffee.UIExtensions
             {
                 EditorGUI.BeginDisabledGroup(true);
                 var obj = UIParticleUpdater.GetPrimary(spGroupId.intValue);
-                EditorGUILayout.ObjectField(s_ContentPrimary, obj, typeof(UIParticle), false);
+                EditorGUILayout.ObjectField("Primary", obj, typeof(UIParticle), false);
                 EditorGUI.EndDisabledGroup();
             }
 
@@ -455,7 +399,7 @@ namespace Coffee.UIExtensions
             return showMax;
         }
 
-        private static void DrawAutoScaling(SerializedProperty prop)
+        private static void DrawAutoScaling(SerializedProperty prop, IEnumerable<UIParticle> uiParticles)
         {
             EditorGUILayout.PropertyField(prop);
         }
@@ -464,9 +408,7 @@ namespace Coffee.UIExtensions
         {
             if (!p || (ignoreCurrent && target == p)) return;
 
-            var cr = p.canvasRenderer;
             DestroyImmediate(p);
-            DestroyImmediate(cr);
 
 #if UNITY_2018_3_OR_NEWER
             var stage = PrefabStageUtility.GetCurrentPrefabStage();

Packages/src/Icons.meta

@@ -1,5 +1,6 @@
 fileFormatVersion: 2
-guid: dfba9a6f2258941f5b4429fba806d8e9
+guid: 7a55e246f37df405bac88eac692e3a86
+folderAsset: yes
 DefaultImporter:
   externalObjects: {}
   userData: 

Packages/src/README.md

@@ -1,85 +1,61 @@
-# <img alt="UIParticleIcon" src="https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/d76e105e-a840-4f61-a1f6-8cf311c0812d" width="26"/> Particle Effect For UGUI (UI Particle) <!-- omit in toc -->
+# <img alt="UIParticleIcon" src="https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/d76e105e-a840-4f61-a1f6-8cf311c0812d" width="26"/> Particle Effect For UGUI (UI Particle)
+
+This package provides a component to render particle effects for uGUI in Unity 2018.2 or later.  
+The particle rendering is maskable and sortable, without the need for an extra Camera, RenderTexture, or Canvas.
 
 [![](https://img.shields.io/npm/v/com.coffee.ui-particle?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.coffee.ui-particle/)
-[![](https://img.shields.io/github/v/release/mob-sakai/ParticleEffectForUGUI)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
+[![](https://img.shields.io/github/v/release/mob-sakai/ParticleEffectForUGUI?include_prereleases)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
-[![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.md)  
+[![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.txt)  
 ![](https://img.shields.io/badge/Unity-2018.2+-57b9d3.svg?style=flat&logo=unity)
-![](https://img.shields.io/badge/uGUI_2.0_Ready-57b9d3.svg?style=flat)
-![](https://img.shields.io/badge/UPR%2FHDPR_Ready-57b9d3.svg?style=flat)  
 ![](https://github.com/mob-sakai/ParticleEffectForUGUI/actions/workflows/test.yml/badge.svg?branch=develop)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-orange.svg)](http://makeapullrequest.com)
-[![](https://img.shields.io/github/watchers/mob-sakai/ParticleEffectForUGUI.svg?style=social&label=Watch)](https://github.com/mob-sakai/ParticleEffectForUGUI/subscription)
 [![](https://img.shields.io/twitter/follow/mob_sakai.svg?label=Follow&style=social)](https://twitter.com/intent/follow?screen_name=mob_sakai)
 
-<< [📝 Description](#-description-) | [📌 Key Features](#-key-features) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
+<< [📝 Description](#-description) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
-
-## 📝 Description <!-- omit in toc -->
-
-![](https://user-images.githubusercontent.com/12690315/41771577-8da4b968-7650-11e8-9524-cd162c422d9d.gif)
-
-This package uses the new APIs `MeshBake/MeshTrailBake` (introduced in Unity 2018.2) to render particles through `CanvasRenderer`.  
-You can render, mask, and sort your `ParticleSystems` for UI without the need for an additional `Camera`, `RenderTexture`, or `Canvas`.
-
-- [📌 Key Features](#-key-features)
-- [🎮 Demo](#-demo)
-- [⚙ Installation](#-installation)
-    - [Install via OpenUPM](#install-via-openupm)
-    - [Install via UPM (with Package Manager UI)](#install-via-upm-with-package-manager-ui)
-    - [Install via UPM (Manually)](#install-via-upm-manually)
-    - [Install as Embedded Package](#install-as-embedded-package)
-- [🚀 Usage](#-usage)
-  - [Component: UIParticle](#component-uiparticle)
-  - [Basic Usage](#basic-usage)
-  - [Usage with Your Existing ParticleSystem Prefab](#usage-with-your-existing-particlesystem-prefab)
-  - [Usage with `Mask` or `RectMask2D` Component](#usage-with-mask-or-rectmask2d-component)
-  - [Usage with Script](#usage-with-script)
-  - [Component: UIParticleAttractor](#component-uiparticleattractor)
-  - [Project Settings](#project-settings)
-- [🛠 Development Note](#-development-note)
-  - [Compares the Baking mesh approach with the conventional approach](#compares-the-baking-mesh-approach-with-the-conventional-approach)
-    - [Performance test results](#performance-test-results)
-  - [🔍 FAQ: Why Are My UIParticles Not Displayed Correctly?](#-faq-why-are-my-uiparticles-not-displayed-correctly)
-  - [Shader Limitation](#shader-limitation)
-    - [Built-in shaders are not supported](#built-in-shaders-are-not-supported)
-    - [(Unity 2018 or 2019) UV.zw components will be discarded](#unity-2018-or-2019-uvzw-components-will-be-discarded)
-    - [(Unity 2018 or 2019) Custom vertex streams](#unity-2018-or-2019-custom-vertex-streams)
-  - [Overheads](#overheads)
-  - [How to Make a Custom Shader to Support `Mask` and `RectMask2D` Component](#how-to-make-a-custom-shader-to-support-mask-and-rectmask2d-component)
-- [🤝 Contributing](#-contributing)
-  - [Issues](#issues)
-  - [Pull Requests](#pull-requests)
-  - [Support](#support)
-- [License](#license)
-- [Author](#author)
-- [See Also](#see-also)
 
 <br><br>
 
-## 📌 Key Features
+## 📝 Description
 
-* **Easy to use:** The package is ready to use out of the box.
+![](https://user-images.githubusercontent.com/12690315/41771577-8da4b968-7650-11e8-9524-cd162c422d9d.gif)
-* **Sortable:** Sort particle effects and other UI elements by sibling index.
+
-* **Maskable:** Supports `Mask` or `RectMask2D`.
+This package utilizes the new APIs `MeshBake/MashTrailBake` (introduced with Unity 2018.2) to render particles through
-* **No extra components required:** No need for an additional `Camera`, `RenderTexture`, or `Canvas`.
+CanvasRenderer.  
-* **Trail module support:** Fully supports the Trail module.
+You can render, mask, and sort your ParticleSystems for UI without the necessity of an additional Camera, RenderTexture,
-* **CanvasGroup alpha support:** Integrates with `CanvasGroup` alpha.
+or Canvas.
-* **No allocations:** Efficiently renders particles without allocations.
+
-* **Any canvas render mode support:** Works with overlay, camera space, and world space.
+### Features
-* **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`.
+* Easy to use: The package is ready to use out of the box.
-* **Animatable material properties:** Supports changing material properties with AnimationClip (AnimatableProperty).  
+* Sort particle effects and other UI by sibling index.
-  ![AnimatableProperty.gif](https://user-images.githubusercontent.com/12690315/53286323-2d94a980-37b0-11e9-8afb-c4a207805ff2.gif)
+* No extra Camera, RenderTexture, or Canvas required.
-* **Multiple materials:** Supports 8+ materials.
+* Masking options for Mask or RectMask2D.
-* **Correct positioning:** Adjusts world space particle positions correctly when changing window size for standalone platforms (Windows, MacOSX, and Linux).
+* Support for the Trail module.
-* **Adaptive scaling:** Provides adaptive scaling for UI (AutoScalingMode).
+* Support for CanvasGroup alpha.
-* **Performance optimization:** Mesh sharing group to improve performance.  
+* No allocations needed to render particles.
-  <img alt="MeshSharing.gif" src="https://user-images.githubusercontent.com/12690315/174311048-c882df81-6c34-4eba-b0aa-5645457692f1.gif" width="450"/>
+* Compatibility with overlay, camera space, and world space.
-* **Particle attractor:** Includes a particle attractor component.  
+* Support for Universal Render Pipeline (URP) and High Definition Render Pipeline (HDRP).
-  <img alt="ParticleAttractor.gif" src="https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif" width="450"/>
+* Support for disabling `Enter Play Mode Options > Reload Domain`.
-* **Emission position mode:** Supports relative/absolute particle emission position modes.  
+* Support for changing material property with AnimationClip (AnimatableProperty).  
-  <img alt="AbsolutePosition.gif" src="https://user-images.githubusercontent.com/12690315/175751579-5a2357e8-2ecf-4afd-83c8-66e9771bde39.gif" width="450"/>
+  ![AnimatableProperty.gif][AnimatableProperty.gif]
-* **Custom view size:** Fixes min/max particle size mismatch.  
+* [4.0.0+] Support for 8+ materials.
-  ![CustomViewSize.gif](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/dd929959-1a37-420b-b13d-e849022b9c9d)
+* [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
+
+[MeshSharing.gif]: https://user-images.githubusercontent.com/12690315/174311048-c882df81-6c34-4eba-b0aa-5645457692f1.gif
+
+[ParticleAttractor.gif]: https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif
+
+[AbsolutePosition.gif]: https://user-images.githubusercontent.com/12690315/175751579-5a2357e8-2ecf-4afd-83c8-66e9771bde39.gif
 
 <br><br>
 
@@ -100,87 +76,76 @@ You can render, mask, and sort your `ParticleSystems` for UI without the need fo
 
 [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:
-  ```
-  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 (with Package Manager UI)
+If you have [openupm-cli](https://github.com/openupm/openupm-cli) installed, then run the following command in your
+project's directory:
 
-- Click `Window > Package Manager` to open Package Manager UI.
+```sh
-- Click `+ > Add package from git URL...` and input the repository URL: `https://github.com/mob-sakai/ParticleEffectForUGUI.git`  
+openupm add com.coffee.ui-particle
-  ![](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)
+#### Install via UPM (using Git URL)
 
-- Open the `Packages/manifest.json` file in your project. Then add this package somewhere in the `dependencies` block:
+Navigate to your project's Packages folder and open the `manifest.json` file. Then add this package somewhere in
-  ```json
+the `dependencies` block:
-  {
+
+```json
+{
   "dependencies": {
     "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git",
     ...
   }
-  }
+}
-  ```
+```
 
-- 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",`
 
-#### Install as Embedded Package
+* e.g. `"com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.6.0",`
 
-1. Download a source code zip file from [Releases](https://github.com/mob-sakai/ParticleEffectForUGUI/releases) and extract it.
+Or, use [UpmGitExtension](https://github.com/mob-sakai/UpmGitExtension) to install and update the package.
-2. Place it in your project's `Packages` directory.  
+
-   ![](https://github.com/mob-sakai/mob-sakai/assets/12690315/0b7484b4-5fca-43b0-a9ef-e5dbd99bcdb4)
+<br><br>
-- 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.
+## ⚙ 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`.
+- 
 
 <br><br>
 
 ## 🚀 Usage
 
-### Component: UIParticle
+### UIParticle Component
 
 `UIParticle` controls the ParticleSystems that are attached to its own game objects and child game objects.
 
-![](https://github.com/user-attachments/assets/bc9eb783-afce-4102-ac61-aee9ea8d6f2f)
+![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/3559df45-63e7-4c4c-9233-f455779efa29)
 
-- **Maskable**: Does this graphic allow maskable.
+- **Maskable**: Does this graphic allow masking.
-- **Scale**: Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.
+- **Scale**: Scale the rendering. 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 as animatable.
+  use this to mark the changes.
 - **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:** The particles will be emitted from the world position.
+    - **Absolute:** Emit from the world position of the `ParticleSystem`.
-  - **Relative:** The particles will be emitted from the scaled position.
+    - **Relative:** Emit from the scaled position of the `ParticleSystem`.
-- **Auto Scaling Mode**: How to automatically adjust when the Canvas scale is changed by the screen size or reference resolution.
+- **Auto Scaling**: `Transform.lossyScale` (=world scale) will be set to `(1, 1, 1)` on update. It prevents the
-  - **None:** Do nothing.
+  root-Canvas scale from affecting the hierarchy-scaled `ParticleSystem`.
-  - **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.
-- **Time Scale Multiplier:** Time scale multiplier.
 - **Rendering Order**: The ParticleSystem list to be rendered. You can change the order and the materials.
 
 **NOTE:** Press the `Refresh` button to reconstruct the rendering order based on children ParticleSystem's sorting order
@@ -188,7 +153,7 @@ and z-position.
 
 <br><br>
 
-### Basic Usage
+#### Basic Usage
 
 1. Select `GameObject/UI/ParticleSystem` to create UIParticle with a ParticleSystem.
    ![particle](https://user-images.githubusercontent.com/12690315/95007361-cad0e880-0649-11eb-8835-f145d62c5977.png)
@@ -197,7 +162,7 @@ and z-position.
 
 <br>
 
-### Usage with Your Existing ParticleSystem Prefab
+#### With Your Existing ParticleSystem Prefab
 
 1. Select `GameObject/UI/ParticleSystem (Empty)` to create UIParticle.
    ![empty](https://user-images.githubusercontent.com/12690315/95007362-cb697f00-0649-11eb-8a09-29b0a13791e4.png)
@@ -206,19 +171,19 @@ and z-position.
 
 <br>
 
-### Usage with `Mask` or `RectMask2D` Component
+#### With `Mask` or `RectMask2D` Component
 
 If you want to mask particles, set a stencil-supported shader (such as `UI/UIAdditive`) to the material for
 ParticleSystem.
 If you use some custom shaders, see
-the [How to Make a Custom Shader to Support Mask/RectMask2D Component](#how-to-make-a-custom-shader-to-support-mask-and-rectmask2d-component)
+the [How to Make a Custom Shader to Support Mask/RectMask2D Component](#how-to-make-a-custom-shader-to-support-maskrectmask2d-component)
 section.
 
 ![](https://user-images.githubusercontent.com/12690315/95017591-3b512700-0695-11eb-864e-04166ea1809a.png)
 
 <br><br>
 
-### Usage with Script
+### Script usage
 
 ```cs
 // Instantiate ParticleSystem prefab with UIParticle on runtime.
@@ -237,14 +202,14 @@ uiParticle.Stop();
 
 <br><br>
 
-### Component: UIParticleAttractor
+### UIParticleAttractor component
 
 `UIParticleAttractor` attracts particles generated by the specified ParticleSystem.
 
-![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/5c20ad73-4b9a-4f38-9cdc-119df5cce077)
+![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/ea6ae0ed-f9a8-437c-8baa-47526303391e)  
 ![](https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif)
 
-- **Particle Systems**: Attracts particles generated by the specified ParticleSystems.
+- **Particle System**: Attracts particles generated by the specified particle system.
 - **Destination Radius**: Once the particle is within the radius, the particle lifetime will become 0, and `OnAttracted`
   will be called.
 - **Delay Rate**: Delay to start attracting. It is a percentage of the particle's start lifetime.
@@ -258,14 +223,6 @@ uiParticle.Stop();
 
 <br><br>
 
-### Project Settings
-
-![](https://github.com/user-attachments/assets/befc7f34-fb47-4006-831a-eba79fda11ca)
-
-- Click `Edit > Project Settings` to open the Project Settings window and then select `UI > UI Particle` category.
-
-<br><br>
-
 ## 🛠 Development Note
 
 ### Compares the Baking mesh approach with the conventional approach
@@ -397,7 +354,7 @@ When improving performance, keep the following in mind:
     - Consider a single material, atlasing the sprites, and using `Sprite` mode in the `Texture Sheet Animation` module
       in the ParticleSystem.
 
-### How to Make a Custom Shader to Support `Mask` and `RectMask2D` Component
+### How to Make a Custom Shader to Support Mask/RectMask2D Component
 
 <details>
 <summary>Shader tips</summary>

Packages/src/Runtime/Coffee.UIParticle.R.dll.meta

@@ -1,33 +0,0 @@
-fileFormatVersion: 2
-guid: 4d73b3825bf044d418ae21bb331d3902
-PluginImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  iconMap: {}
-  executionOrder: {}
-  defineConstraints: []
-  isPreloaded: 0
-  isOverridable: 1
-  isExplicitlyReferenced: 0
-  validateReferences: 1
-  platformData:
-  - first:
-      Any: 
-    second:
-      enabled: 1
-      settings: {}
-  - first:
-      Editor: Editor
-    second:
-      enabled: 0
-      settings:
-        DefaultValueInitialized: true
-  - first:
-      Windows Store Apps: WindowsStoreApps
-    second:
-      enabled: 0
-      settings:
-        CPU: AnyCPU
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

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

@@ -18,10 +18,10 @@ namespace Coffee.UIParticleInternal
         public static T[] GetComponentsInChildren<T>(this Component self, int depth)
             where T : Component
         {
-            var results = InternalListPool<T>.Rent();
+            var results = ListPool<T>.Rent();
             self.GetComponentsInChildren_Internal(results, depth);
             var array = results.ToArray();
-            InternalListPool<T>.Return(ref results);
+            ListPool<T>.Return(ref results);
             return array;
         }
 
@@ -38,7 +38,7 @@ namespace Coffee.UIParticleInternal
         private static void GetComponentsInChildren_Internal<T>(this Component self, List<T> results, int depth)
             where T : Component
         {
-            if (self == null || results == null || depth < 0) return;
+            if (!self || results == null || depth < 0) return;
 
             var tr = self.transform;
             if (tr.TryGetComponent<T>(out var t))
@@ -50,7 +50,7 @@ namespace Coffee.UIParticleInternal
             var childCount = tr.childCount;
             for (var i = 0; i < childCount; i++)
             {
-                tr.GetChild(i).GetComponentsInChildren_Internal(results, depth - 1);
+                tr.GetChild(i).GetComponentsInChildren(results, depth - 1);
             }
         }
 
@@ -59,7 +59,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public static T GetOrAddComponent<T>(this Component self) where T : Component
         {
-            if (self == null) return null;
+            if (!self) return null;
             return self.TryGetComponent<T>(out var component)
                 ? component
                 : self.gameObject.AddComponent<T>();
@@ -134,39 +134,10 @@ namespace Coffee.UIParticleInternal
             Profiler.EndSample();
         }
 
-        /// <summary>
-        /// Add a component of a specific type to the children of a GameObject.
-        /// </summary>
-        public static void AddComponentOnChildren<T>(this Component self, bool includeSelf)
-            where T : Component
-        {
-            if (self == null) return;
-
-            Profiler.BeginSample("(COF)[ComponentExt] AddComponentOnChildren > Self");
-            if (includeSelf && !self.TryGetComponent<T>(out _))
-            {
-                self.gameObject.AddComponent<T>();
-            }
-
-            Profiler.EndSample();
-
-            Profiler.BeginSample("(COF)[ComponentExt] AddComponentOnChildren > Child");
-            var childCount = self.transform.childCount;
-            for (var i = 0; i < childCount; i++)
-            {
-                var child = self.transform.GetChild(i);
-                if (child.TryGetComponent<T>(out _)) continue;
-
-                child.gameObject.AddComponent<T>();
-            }
-
-            Profiler.EndSample();
-        }
-
 #if !UNITY_2021_2_OR_NEWER && !UNITY_2020_3_45 && !UNITY_2020_3_46 && !UNITY_2020_3_47 && !UNITY_2020_3_48
         public static T GetComponentInParent<T>(this Component self, bool includeInactive) where T : Component
         {
-            if (self == null) return null;
+            if (!self) return null;
             if (!includeInactive) return self.GetComponentInParent<T>();
 
             var current = self.transform;
@@ -186,7 +157,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         internal static bool CanConvertTo<T>(this Object context) where T : MonoBehaviour
         {
-            return context != null && context.GetType() != typeof(T);
+            return context && context.GetType() != typeof(T);
         }
 
         /// <summary>
@@ -204,7 +175,7 @@ namespace Coffee.UIParticleInternal
             target.enabled = false;
 
             // Find MonoScript of the specified component.
-            foreach (var script in MonoImporter.GetAllRuntimeMonoScripts())
+            foreach (var script in Resources.FindObjectsOfTypeAll<MonoScript>())
             {
                 if (script.GetClass() != typeof(T))
                 {

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

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace Coffee.UIParticleInternal
+{
+    /// <summary>
+    /// Extension methods for Component class.
+    /// </summary>
+    internal static class ListExtensions
+    {
+        public static void RemoveAtFast<T>(this List<T> self, int index)
+        {
+            if (self == null) return;
+
+            var lastIndex = self.Count - 1;
+            self[index] = self[lastIndex];
+            self.RemoveAt(lastIndex);
+        }
+    }
+}

Packages/src/Runtime/Internal/Extensions/ListExtensions.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 833553390099d40c9b212823f0852c46
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -0,0 +1,48 @@
+using System.Diagnostics;
+using UnityEditor;
+using UnityEngine;
+
+namespace Coffee.UIParticleInternal
+{
+    internal static class Misc
+    {
+        public static void Destroy(Object obj)
+        {
+            if (!obj) return;
+#if UNITY_EDITOR
+            if (!Application.isPlaying)
+            {
+                Object.DestroyImmediate(obj);
+            }
+            else
+#endif
+            {
+                Object.Destroy(obj);
+            }
+        }
+
+        public static void DestroyImmediate(Object obj)
+        {
+            if (!obj) return;
+#if UNITY_EDITOR
+            if (Application.isEditor)
+            {
+                Object.DestroyImmediate(obj);
+            }
+            else
+#endif
+            {
+                Object.Destroy(obj);
+            }
+        }
+
+        [Conditional("UNITY_EDITOR")]
+        public static void SetDirty(Object obj)
+        {
+#if UNITY_EDITOR
+            if (!obj) return;
+            EditorUtility.SetDirty(obj);
+#endif
+        }
+    }
+}

Packages/src/Runtime/Internal/Extensions/Misc.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 182319ecc315e4858b119764af0fbcb0
+guid: 39ed6a6b0a72e482488bd298b2ae762e
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

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

@@ -17,25 +17,23 @@ namespace Coffee.UIParticleInternal
             Type.GetType("UnityEditor.Experimental.U2D.SpriteEditorExtension, UnityEditor")
             ?? Type.GetType("UnityEditor.U2D.SpriteEditorExtension, UnityEditor");
 
-        private static readonly Func<Sprite, Texture2D> s_GetActiveAtlasTextureMethod =
+        private static readonly MethodInfo s_GetActiveAtlasTextureMethod = s_SpriteEditorExtensionType
-            (Func<Sprite, Texture2D>)Delegate.CreateDelegate(typeof(Func<Sprite, Texture2D>),
+            .GetMethod("GetActiveAtlasTexture", BindingFlags.Static | BindingFlags.NonPublic);
-                s_SpriteEditorExtensionType
-                    .GetMethod("GetActiveAtlasTexture", BindingFlags.Static | BindingFlags.NonPublic));
 
-        private static readonly Func<Sprite, SpriteAtlas> s_GetActiveAtlasMethod =
+        private static readonly MethodInfo s_GetActiveAtlasMethod = s_SpriteEditorExtensionType
-            (Func<Sprite, SpriteAtlas>)Delegate.CreateDelegate(typeof(Func<Sprite, SpriteAtlas>),
+            .GetMethod("GetActiveAtlas", BindingFlags.Static | BindingFlags.NonPublic);
-                s_SpriteEditorExtensionType
-                    .GetMethod("GetActiveAtlas", BindingFlags.Static | BindingFlags.NonPublic));
 
         /// <summary>
         /// Get the actual texture of a sprite in play mode or edit mode.
         /// </summary>
         public static Texture2D GetActualTexture(this Sprite self)
         {
-            if (self == null) return null;
+            if (!self) return null;
 
-            var ret = s_GetActiveAtlasTextureMethod(self);
+            if (Application.isPlaying) return self.texture;
-            return ret != null ? ret : self.texture;
+
+            var ret = s_GetActiveAtlasTextureMethod.Invoke(null, new object[] { self }) as Texture2D;
+            return ret ? ret : self.texture;
         }
 
         /// <summary>
@@ -43,9 +41,9 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public static SpriteAtlas GetActiveAtlas(this Sprite self)
         {
-            if (self == null) return null;
+            if (!self) return null;
 
-            return s_GetActiveAtlasMethod(self);
+            return s_GetActiveAtlasMethod.Invoke(null, new object[] { self }) as SpriteAtlas;
         }
 #else
         /// <summary>
@@ -53,7 +51,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         internal static Texture2D GetActualTexture(this Sprite self)
         {
-            return self != null ? self.texture : null;
+            return self ? self.texture : null;
         }
 #endif
     }

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

@@ -1,9 +1,9 @@
 using System;
 using System.Linq;
+using System.Reflection;
 using UnityEngine;
 using Object = UnityEngine.Object;
 #if UNITY_EDITOR
-using System.IO;
 using UnityEditor;
 using UnityEditor.Build;
 using UnityEditor.Build.Reporting;
@@ -13,16 +13,7 @@ namespace Coffee.UIParticleInternal
 {
     public abstract class PreloadedProjectSettings : ScriptableObject
 #if UNITY_EDITOR
-    {
+        , IPreprocessBuildWithReport
-        private class Postprocessor : AssetPostprocessor
-        {
-            private static void OnPostprocessAllAssets(string[] _, string[] __, string[] ___, string[] ____)
-            {
-                Initialize();
-            }
-        }
-
-        private class PreprocessBuildWithReport : IPreprocessBuildWithReport
     {
         int IOrderedCallback.callbackOrder => 0;
 
@@ -30,34 +21,33 @@ namespace Coffee.UIParticleInternal
         {
             Initialize();
         }
-        }
 
+        [InitializeOnLoadMethod]
+        [InitializeOnEnterPlayMode]
         private static void Initialize()
         {
+            const BindingFlags flags = BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy;
             foreach (var t in TypeCache.GetTypesDerivedFrom(typeof(PreloadedProjectSettings<>)))
             {
                 var defaultSettings = GetDefaultSettings(t);
-                if (defaultSettings == null)
+                if (!defaultSettings)
                 {
-                    // When create a new instance, automatically set it as default settings.
+                    defaultSettings = t.GetProperty("instance", flags)
-                    defaultSettings = CreateInstance(t) as PreloadedProjectSettings;
+                        ?.GetValue(null, null) as PreloadedProjectSettings;
                     SetDefaultSettings(defaultSettings);
                 }
                 else if (GetPreloadedSettings(t).Length != 1)
                 {
                     SetDefaultSettings(defaultSettings);
                 }
+            }
 
-                if (defaultSettings != null)
+            EditorApplication.QueuePlayerLoopUpdate();
-                {
-                    defaultSettings.OnInitialize();
-                }
-            }
         }
 
         protected static string GetDefaultName(Type type, bool nicify)
         {
-            var typeName = type.Name;
+            var typeName = type.Name.Replace("ProjectSettings", "");
             return nicify
                 ? ObjectNames.NicifyVariableName(typeName)
                 : typeName;
@@ -66,7 +56,7 @@ namespace Coffee.UIParticleInternal
         private static Object[] GetPreloadedSettings(Type type)
         {
             return PlayerSettings.GetPreloadedAssets()
-                .Where(x => x != null && x.GetType() == type)
+                .Where(x => x && x.GetType() == type)
                 .ToArray();
         }
 
@@ -76,13 +66,11 @@ namespace Coffee.UIParticleInternal
                    ?? AssetDatabase.FindAssets($"t:{nameof(PreloadedProjectSettings)}")
                        .Select(AssetDatabase.GUIDToAssetPath)
                        .Select(AssetDatabase.LoadAssetAtPath<PreloadedProjectSettings>)
-                       .FirstOrDefault(x => x != null && x.GetType() == type);
+                       .FirstOrDefault(x => x && x.GetType() == type);
         }
 
         protected static void SetDefaultSettings(PreloadedProjectSettings asset)
         {
-            if (asset == null) return;
-
             var type = asset.GetType();
             if (string.IsNullOrEmpty(AssetDatabase.GetAssetPath(asset)))
             {
@@ -93,17 +81,13 @@ namespace Coffee.UIParticleInternal
 
                 var assetPath = $"Assets/ProjectSettings/{GetDefaultName(type, false)}.asset";
                 assetPath = AssetDatabase.GenerateUniqueAssetPath(assetPath);
-                if (!File.Exists(assetPath))
-                {
                 AssetDatabase.CreateAsset(asset, assetPath);
-                    asset.OnCreateAsset();
-                }
             }
 
             var preloadedAssets = PlayerSettings.GetPreloadedAssets();
             var projectSettings = GetPreloadedSettings(type);
             PlayerSettings.SetPreloadedAssets(preloadedAssets
-                .Where(x => x != null)
+                .Where(x => x)
                 .Except(projectSettings.Except(new[] { asset }))
                 .Append(asset)
                 .Distinct()
@@ -111,20 +95,13 @@ namespace Coffee.UIParticleInternal
 
             AssetDatabase.Refresh();
         }
-
-        protected virtual void OnCreateAsset()
-        {
-        }
-
-        protected virtual void OnInitialize()
-        {
-        }
     }
 #else
     {
     }
 #endif
 
+
     public abstract class PreloadedProjectSettings<T> : PreloadedProjectSettings
         where T : PreloadedProjectSettings<T>
     {
@@ -133,19 +110,17 @@ namespace Coffee.UIParticleInternal
 #if UNITY_EDITOR
         private string _jsonText;
 
-        public static bool hasInstance => s_Instance != null;
-
         public static T instance
         {
             get
             {
-                if (s_Instance != null) return s_Instance;
+                if (s_Instance) return s_Instance;
 
                 s_Instance = GetDefaultSettings(typeof(T)) as T;
-                if (s_Instance != null) return s_Instance;
+                if (s_Instance) return s_Instance;
 
                 s_Instance = CreateInstance<T>();
-                if (s_Instance == null)
+                if (!s_Instance)
                 {
                     s_Instance = null;
                     return s_Instance;
@@ -174,7 +149,7 @@ namespace Coffee.UIParticleInternal
             }
         }
 #else
-    public static T instance => s_Instance != null ? s_Instance : s_Instance = CreateInstance<T>();
+        public static T instance => s_Instance ? s_Instance : s_Instance = CreateInstance<T>();
 #endif
 
         /// <summary>
@@ -183,7 +158,7 @@ namespace Coffee.UIParticleInternal
         protected virtual void OnEnable()
         {
 #if UNITY_EDITOR
-            var isDefaultSettings = s_Instance == null || s_Instance == this || GetDefaultSettings(typeof(T)) == this;
+            var isDefaultSettings = !s_Instance || s_Instance == this || GetDefaultSettings(typeof(T)) == this;
             if (!isDefaultSettings)
             {
                 DestroyImmediate(this, true);
@@ -193,7 +168,7 @@ namespace Coffee.UIParticleInternal
             EditorApplication.playModeStateChanged += OnPlayModeStateChanged;
 #endif
 
-            if (s_Instance != null) return;
+            if (s_Instance) return;
             s_Instance = this as T;
         }
 
@@ -222,7 +197,7 @@ namespace Coffee.UIParticleInternal
 
             public override void OnGUI(string searchContext)
             {
-                if (_target == null)
+                if (!_target)
                 {
                     if (_editor)
                     {

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

@@ -10,9 +10,8 @@ namespace Coffee.UIParticleInternal
     /// </summary>
     internal class FastActionBase<T>
     {
-        private static readonly InternalObjectPool<LinkedListNode<T>> s_NodePool =
+        private static readonly ObjectPool<LinkedListNode<T>> s_NodePool =
-            new InternalObjectPool<LinkedListNode<T>>(() => new LinkedListNode<T>(default), _ => true,
+            new ObjectPool<LinkedListNode<T>>(() => new LinkedListNode<T>(default), _ => true, x => x.Value = default);
-                x => x.Value = default);
 
         private readonly LinkedList<T> _delegates = new LinkedList<T>();
 
@@ -21,7 +20,6 @@ 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;
@@ -34,7 +32,6 @@ 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)
@@ -66,11 +63,6 @@ namespace Coffee.UIParticleInternal
                 node = node.Next;
             }
         }
-
-        public void Clear()
-        {
-            _delegates.Clear();
-        }
     }
 
     /// <summary>

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

@@ -46,6 +46,7 @@ namespace Coffee.UIParticleInternal
             GetFrameCache<T>().Set((key1.GetHashCode(), key2.GetHashCode()), result);
         }
 
+
         /// <summary>
         /// Sets a value in the frame cache with a specified key.
         /// </summary>

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

@@ -5,6 +5,7 @@ using Object = UnityEngine.Object;
 #if ENABLE_COFFEE_LOGGER
 using System.Reflection;
 using System.Collections.Generic;
+
 #else
 using Conditional = System.Diagnostics.ConditionalAttribute;
 #endif
@@ -42,40 +43,44 @@ namespace Coffee.UIParticleInternal
 #endif
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif
         public static void LogIf(bool enable, object tag, object message, Object context = null)
         {
             if (!enable) return;
-            Log_Internal(LogType.Log, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Log, tag, message, context ? context : tag as Object);
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif
         public static void Log(object tag, object message, Object context = null)
         {
-            Log_Internal(LogType.Log, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Log, tag, message, context ? context : tag as Object);
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif
         public static void LogWarning(object tag, object message, Object context = null)
         {
-            Log_Internal(LogType.Warning, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Warning, tag, message, context ? context : tag as Object);
         }
 
         public static void LogError(object tag, object message, Object context = null)
         {
 #if ENABLE_COFFEE_LOGGER
-            Log_Internal(LogType.Error, tag, message, context != null ? context : tag as Object);
+            Log_Internal(LogType.Error, tag, message, context ? context : tag as Object);
 #else
             Debug.LogError($"{tag}: {message}", context);
 #endif
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif
@@ -119,6 +124,7 @@ namespace Coffee.UIParticleInternal
 #endif
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif
@@ -135,9 +141,6 @@ namespace Coffee.UIParticleInternal
 
                 switch (tag)
                 {
-                    case string name:
-                        sb.Append(name);
-                        break;
                     case Type type:
                         AppendType(sb, type);
                         break;
@@ -164,6 +167,7 @@ namespace Coffee.UIParticleInternal
 #endif
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif
@@ -202,6 +206,7 @@ namespace Coffee.UIParticleInternal
 #endif
         }
 
+
 #if !ENABLE_COFFEE_LOGGER
         [Conditional(k_DisableSymbol)]
 #endif

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

@@ -15,7 +15,7 @@ namespace Coffee.UIParticleInternal
 
 #if UNITY_EDITOR
         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
-        public static void Clear()
+        private static void Clear()
         {
             s_Repository.Clear();
         }
@@ -55,6 +55,7 @@ namespace Coffee.UIParticleInternal
             Profiler.EndSample();
         }
 
+
         /// <summary>
         /// Adds or retrieves a cached material based on the hash.
         /// </summary>

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

@@ -1,132 +0,0 @@
-using System;
-using System.Diagnostics;
-using UnityEditor;
-using UnityEngine;
-using Object = UnityEngine.Object;
-#if UNITY_EDITOR
-using System.IO;
-using System.Linq;
-using System.Reflection;
-#if UNITY_2021_2_OR_NEWER
-using UnityEditor.SceneManagement;
-#else
-using UnityEditor.Experimental.SceneManagement;
-#endif
-#endif
-
-namespace Coffee.UIParticleInternal
-{
-    internal static class Misc
-    {
-        public static T[] FindObjectsOfType<T>() where T : Object
-        {
-#if UNITY_2023_1_OR_NEWER
-            return Object.FindObjectsByType<T>(FindObjectsInactive.Include, FindObjectsSortMode.None);
-#else
-            return Object.FindObjectsOfType<T>();
-#endif
-        }
-
-        public static void Destroy(Object obj)
-        {
-            if (obj == null) return;
-#if UNITY_EDITOR
-            if (!Application.isPlaying)
-            {
-                Object.DestroyImmediate(obj);
-            }
-            else
-#endif
-            {
-                Object.Destroy(obj);
-            }
-        }
-
-        public static void DestroyImmediate(Object obj)
-        {
-            if (obj == null) return;
-#if UNITY_EDITOR
-            if (Application.isEditor)
-            {
-                Object.DestroyImmediate(obj);
-            }
-            else
-#endif
-            {
-                Object.Destroy(obj);
-            }
-        }
-
-        [Conditional("UNITY_EDITOR")]
-        public static void SetDirty(Object obj)
-        {
-#if UNITY_EDITOR
-            if (obj == null) return;
-            EditorUtility.SetDirty(obj);
-#endif
-        }
-
-#if UNITY_EDITOR
-        public static T[] GetAllComponentsInPrefabStage<T>() where T : Component
-        {
-            var prefabStage = PrefabStageUtility.GetCurrentPrefabStage();
-            if (prefabStage == null) return Array.Empty<T>();
-
-            return prefabStage.prefabContentsRoot.GetComponentsInChildren<T>(true);
-        }
-
-        public static bool isBatchOrBuilding => Application.isBatchMode || BuildPipeline.isBuildingPlayer;
-#endif
-
-        [Conditional("UNITY_EDITOR")]
-        public static void QueuePlayerLoopUpdate()
-        {
-#if UNITY_EDITOR
-            if (!EditorApplication.isPlaying)
-            {
-                EditorApplication.QueuePlayerLoopUpdate();
-            }
-#endif
-        }
-    }
-
-#if !UNITY_2021_2_OR_NEWER
-    [AttributeUsage(AttributeTargets.Class)]
-    [Conditional("UNITY_EDITOR")]
-    internal class IconAttribute : Attribute
-    {
-        private readonly string _path;
-
-        public IconAttribute(string path)
-        {
-            _path = path;
-        }
-
-#if UNITY_EDITOR
-        private static Action<Object, Texture2D> s_SetIconForObject = typeof(EditorGUIUtility)
-            .GetMethod("SetIconForObject", BindingFlags.Static | BindingFlags.NonPublic)
-            .CreateDelegate(typeof(Action<Object, Texture2D>), null) as Action<Object, Texture2D>;
-
-        [InitializeOnLoadMethod]
-        private static void InitializeOnLoadMethod()
-        {
-            if (Misc.isBatchOrBuilding) return;
-
-            var types = TypeCache.GetTypesWithAttribute<IconAttribute>();
-            var scripts = MonoImporter.GetAllRuntimeMonoScripts();
-            foreach (var type in types)
-            {
-                var script = scripts.FirstOrDefault(x => x.GetClass() == type);
-                if (script == null) continue;
-
-                var path = type.GetCustomAttribute<IconAttribute>()?._path;
-                var icon = AssetDatabase.LoadAssetAtPath<Texture2D>(path);
-                if (icon == null) continue;
-
-                s_SetIconForObject(script, icon);
-            }
-        }
-#endif
-    }
-#endif
-}

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

@@ -6,58 +6,15 @@ namespace Coffee.UIParticleInternal
     /// <summary>
     /// Object pool.
     /// </summary>
-    internal class InternalObjectPool<T> where T : class
+    internal class ObjectPool<T>
     {
-#if UNITY_2021_1_OR_NEWER
-        private readonly Predicate<T> _onValid; // Delegate for checking if instances are valid
-        private readonly UnityEngine.Pool.ObjectPool<T> _pool;
-
-        public InternalObjectPool(Func<T> onCreate, Predicate<T> onValid, Action<T> onReturn)
-        {
-            _pool = new UnityEngine.Pool.ObjectPool<T>(onCreate, null, onReturn);
-            _onValid = onValid;
-        }
-
-        /// <summary>
-        /// Rent an instance from the pool.
-        /// When you no longer need it, return it with <see cref="Return" />.
-        /// </summary>
-        public T Rent()
-        {
-            while (0 < _pool.CountInactive)
-            {
-                var instance = _pool.Get();
-                if (_onValid(instance))
-                {
-                    return instance;
-                }
-            }
-
-            // If there are no instances in the pool, create a new one.
-            Logging.Log(this, $"A new instance is created (pooled: {_pool.CountInactive}, created: {_pool.CountAll}).");
-            return _pool.Get();
-        }
-
-        /// <summary>
-        /// Return an instance to the pool and assign null.
-        /// Be sure to return the instance obtained with <see cref="Rent" /> with this method.
-        /// </summary>
-        public void Return(ref T instance)
-        {
-            if (instance == null) return; // Ignore if already pooled or null.
-
-            _pool.Release(instance);
-            Logging.Log(this, $"An instance is released (pooled: {_pool.CountInactive}, created: {_pool.CountAll}).");
-            instance = default; // Set the reference to null.
-        }
-#else
         private readonly Func<T> _onCreate; // Delegate for creating instances
         private readonly Action<T> _onReturn; // Delegate for returning instances to the pool
         private readonly Predicate<T> _onValid; // Delegate for checking if instances are valid
         private readonly Stack<T> _pool = new Stack<T>(32); // Object pool
         private int _count; // Total count of created instances
 
-        public InternalObjectPool(Func<T> onCreate, Predicate<T> onValid, Action<T> onReturn)
+        public ObjectPool(Func<T> onCreate, Predicate<T> onValid, Action<T> onReturn)
         {
             _onCreate = onCreate;
             _onValid = onValid;
@@ -97,40 +54,15 @@ namespace Coffee.UIParticleInternal
             Logging.Log(this, $"An instance is released (pooled: {_pool.Count}, created: {_count}).");
             instance = default; // Set the reference to null.
         }
-#endif
     }
 
     /// <summary>
     /// Object pool for <see cref="List{T}" />.
     /// </summary>
-    internal static class InternalListPool<T>
+    internal static class ListPool<T>
     {
-#if UNITY_2021_1_OR_NEWER
+        private static readonly ObjectPool<List<T>> s_ListPool =
-        /// <summary>
+            new ObjectPool<List<T>>(() => new List<T>(), _ => true, x => x.Clear());
-        /// Rent an instance from the pool.
-        /// When you no longer need it, return it with <see cref="Return" />.
-        /// </summary>
-        public static List<T> Rent()
-        {
-            return UnityEngine.Pool.ListPool<T>.Get();
-        }
-
-        /// <summary>
-        /// Return an instance to the pool and assign null.
-        /// Be sure to return the instance obtained with <see cref="Rent" /> with this method.
-        /// </summary>
-        public static void Return(ref List<T> toRelease)
-        {
-            if (toRelease != null)
-            {
-                UnityEngine.Pool.ListPool<T>.Release(toRelease);
-            }
-
-            toRelease = null;
-        }
-#else
-        private static readonly InternalObjectPool<List<T>> s_ListPool =
-            new InternalObjectPool<List<T>>(() => new List<T>(), _ => true, x => x.Clear());
 
         /// <summary>
         /// Rent an instance from the pool.
@@ -149,6 +81,5 @@ namespace Coffee.UIParticleInternal
         {
             s_ListPool.Return(ref toRelease);
         }
-#endif
     }
 }

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

@@ -8,11 +8,10 @@ namespace Coffee.UIParticleInternal
 {
     internal class ObjectRepository<T> where T : Object
     {
-        private readonly Dictionary<Hash128, Entry> _cache = new Dictionary<Hash128, Entry>(8);
+        private readonly List<Entry> _cache = new List<Entry>();
-        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>(8);
+        private readonly Stack<Entry> _pool = new Stack<Entry>();
 
         public ObjectRepository(Action<T> onRelease = null)
         {
@@ -37,33 +36,40 @@ namespace Coffee.UIParticleInternal
             {
                 _onRelease = onRelease;
             }
-
-            for (var i = 0; i < 8; i++)
-            {
-                _pool.Push(new Entry());
-            }
         }
 
         public int count => _cache.Count;
 
         public void Clear()
         {
-            foreach (var kv in _cache)
+            for (var i = 0; i < _cache.Count; i++)
             {
-                var entry = kv.Value;
+                var entry = _cache[i];
                 if (entry == null) continue;
 
                 entry.Release(_onRelease);
-                _pool.Push(entry);
             }
 
             _cache.Clear();
-            _objectKey.Clear();
         }
 
         public bool Valid(Hash128 hash, T obj)
         {
-            return _cache.TryGetValue(hash, out var entry) && entry.storedObject == obj;
+            // Find existing entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] Valid > Find existing entry");
+            for (var i = 0; i < _cache.Count; ++i)
+            {
+                var entry = _cache[i];
+                if (entry.hash != hash) continue;
+                Profiler.EndSample();
+
+                // Existing entry found.
+                return entry.storedObject == obj;
+            }
+
+            Profiler.EndSample();
+
+            return false;
         }
 
         /// <summary>
@@ -71,69 +77,82 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Get(Hash128 hash, ref T obj, Func<T> onCreate)
         {
-            if (GetFromCache(hash, ref obj)) return;
+            // Find existing entry.
-            Add(hash, ref obj, onCreate());
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Find existing entry");
+            for (var i = 0; i < _cache.Count; ++i)
+            {
+                var entry = _cache[i];
+                if (entry.hash != hash) continue;
+
+                // Existing entry found.
+                if (entry.storedObject != obj)
+                {
+                    // if the object is different, release the old one.
+                    Release(ref obj);
+                    ++entry.reference;
+                    obj = entry.storedObject;
+                    Logging.Log(_name, $"Get(#{count}): {entry}");
+                }
+
+                Profiler.EndSample();
+                return;
+            }
+
+            Profiler.EndSample();
+
+            // Create new entry.
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Create new entry");
+            var newEntry = 0 < _pool.Count ? _pool.Pop() : new Entry();
+            newEntry.storedObject = onCreate();
+            newEntry.hash = hash;
+            newEntry.reference = 1;
+            _cache.Add(newEntry);
+            Logging.Log(_name, $"Get(#{count}): {newEntry}");
+
+            Release(ref obj);
+            obj = newEntry.storedObject;
+            Profiler.EndSample();
         }
 
         /// <summary>
         /// Adds or retrieves a cached object based on the hash.
         /// </summary>
         public void Get<TS>(Hash128 hash, ref T obj, Func<TS, T> onCreate, TS source)
-        {
-            if (GetFromCache(hash, ref obj)) return;
-            Add(hash, ref obj, onCreate(source));
-        }
-
-        private bool GetFromCache(Hash128 hash, ref T obj)
         {
             // Find existing entry.
-            Profiler.BeginSample("(COF)[ObjectRepository] GetFromCache");
+            Profiler.BeginSample("(COF)[ObjectRepository] Get > Find existing entry");
-            if (_cache.TryGetValue(hash, out var entry))
+            for (var i = 0; i < _cache.Count; ++i)
             {
-                if (entry.storedObject == null)
+                var entry = _cache[i];
-                {
+                if (entry.hash != hash) continue;
-                    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(total#{count}): {entry}");
+                    Logging.Log(_name, $"Get(#{count}): {entry}");
                 }
 
                 Profiler.EndSample();
-                return true;
-            }
-
-            Profiler.EndSample();
-            return false;
-        }
-
-        private void Add(Hash128 hash, ref T obj, T newObject)
-        {
-            if (newObject == null)
-            {
-                Release(ref obj);
-                obj = newObject;
                 return;
             }
 
-            // Create and add a new entry.
+            Profiler.EndSample();
-            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 = newObject;
+            newEntry.storedObject = onCreate(source);
             newEntry.hash = hash;
             newEntry.reference = 1;
-            _cache[hash] = newEntry;
+            _cache.Add(newEntry);
-            _objectKey[newObject.GetInstanceID()] = hash;
+            Logging.Log(_name, $"Get(#{count}): {newEntry}");
-            Logging.Log(_name, $"<color=#03c700>Add</color>(total#{count}): {newEntry}");
+
             Release(ref obj);
-            obj = newObject;
+            obj = newEntry.storedObject;
             Profiler.EndSample();
         }
 
@@ -144,45 +163,35 @@ namespace Coffee.UIParticleInternal
         {
             if (ReferenceEquals(obj, null)) return;
 
-            // Find and release the entry.
             Profiler.BeginSample("(COF)[ObjectRepository] Release");
-            var id = obj.GetInstanceID();
+            for (var i = 0; i < _cache.Count; i++)
-            if (_objectKey.TryGetValue(id, out var hash)
-                && _cache.TryGetValue(hash, out var entry))
             {
-                entry.reference--;
+                var entry = _cache[i];
-                if (entry.reference <= 0 || entry.storedObject == null)
+
+                if (entry.storedObject != obj)
                 {
-                    Remove(entry);
+                    continue;
                 }
-                else
+
+                if (--entry.reference <= 0)
                 {
-                    Logging.Log(_name, $"Release(total#{_cache.Count}): {entry}");
+                    Profiler.BeginSample("(COF)[ObjectRepository] Release > RemoveAt");
+                    _cache.RemoveAtFast(i);
+                    Logging.Log(_name, $"Release(#{_cache.Count}): {entry}");
+                    entry.Release(_onRelease);
+                    _pool.Push(entry);
+                    Profiler.EndSample();
+                    break;
                 }
-            }
+
-            else
+                Logging.Log(_name, $"Release(#{count}): {entry}");
-            {
+                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;
@@ -192,7 +201,7 @@ namespace Coffee.UIParticleInternal
             public void Release(Action<T> onRelease)
             {
                 reference = 0;
-                if (storedObject != null)
+                if (storedObject)
                 {
                     onRelease?.Invoke(storedObject);
                 }
@@ -202,7 +211,7 @@ namespace Coffee.UIParticleInternal
 
             public override string ToString()
             {
-                return $"h{(uint)hash.GetHashCode()} (refs#{reference}), {storedObject}";
+                return $"h{(uint)hash.GetHashCode()} (#{reference}), {storedObject}";
             }
         }
     }

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

@@ -14,8 +14,6 @@ namespace Coffee.UIParticleInternal
         private static readonly FastAction s_AfterCanvasRebuildAction = new FastAction();
         private static readonly FastAction s_LateAfterCanvasRebuildAction = new FastAction();
         private static readonly FastAction s_BeforeCanvasRebuildAction = new FastAction();
-        private static readonly FastAction s_OnScreenSizeChangedAction = new FastAction();
-        private static Vector2Int s_LastScreenSize;
 
         static UIExtraCallbacks()
         {
@@ -50,15 +48,6 @@ namespace Coffee.UIParticleInternal
             remove => s_AfterCanvasRebuildAction.Remove(value);
         }
 
-        /// <summary>
-        /// Event that occurs when the screen size changes.
-        /// </summary>
-        public static event Action onScreenSizeChanged
-        {
-            add => s_OnScreenSizeChangedAction.Add(value);
-            remove => s_OnScreenSizeChangedAction.Remove(value);
-        }
-
         /// <summary>
         /// Initializes the UIExtraCallbacks to ensure proper event handling.
         /// </summary>
@@ -75,12 +64,11 @@ namespace Coffee.UIParticleInternal
 
 #if UNITY_EDITOR
         [InitializeOnLoadMethod]
-#endif
+#else
         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
+#endif
         private static void InitializeOnLoad()
         {
-            Canvas.willRenderCanvases -= OnAfterCanvasRebuild;
-            s_IsInitializedAfterCanvasRebuild = false;
         }
 
         /// <summary>
@@ -88,17 +76,6 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         private static void OnBeforeCanvasRebuild()
         {
-            var screenSize = new Vector2Int(Screen.width, Screen.height);
-            if (s_LastScreenSize != screenSize)
-            {
-                if (s_LastScreenSize != default)
-                {
-                    s_OnScreenSizeChangedAction.Invoke();
-                }
-
-                s_LastScreenSize = screenSize;
-            }
-
             s_BeforeCanvasRebuildAction.Invoke();
             InitializeAfterCanvasRebuild();
         }

Packages/src/Runtime/UIParticle.cs

@@ -3,26 +3,22 @@ using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using Coffee.UIParticleInternal;
 using UnityEngine;
+using UnityEngine.EventSystems;
 using UnityEngine.Rendering;
 using UnityEngine.Serialization;
-using UnityEngine.UI;
 using Random = UnityEngine.Random;
 
 [assembly: InternalsVisibleTo("Coffee.UIParticle.Editor")]
-[assembly: InternalsVisibleTo("Coffee.UIParticle.Editor.Tests")]
-[assembly: InternalsVisibleTo("Coffee.UIParticle.PerformanceDemo")]
-[assembly: InternalsVisibleTo("Coffee.UIParticle.Demo")]
 
 namespace Coffee.UIExtensions
 {
     /// <summary>
     /// Render maskable and sortable particle effect ,without Camera, RenderTexture or Canvas.
     /// </summary>
-    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
     [ExecuteAlways]
     [RequireComponent(typeof(RectTransform))]
     [RequireComponent(typeof(CanvasRenderer))]
-    public class UIParticle : MaskableGraphic, ISerializationCallbackReceiver
+    public class UIParticle : UIBehaviour, ISerializationCallbackReceiver
     {
         public enum AutoScalingMode
         {
@@ -62,12 +58,12 @@ namespace Coffee.UIExtensions
         [Obsolete]
         internal bool m_AbsoluteMode;
 
-        [Tooltip("Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.")]
+        [Tooltip("Particle effect scale")]
         [SerializeField]
-        private Vector3 m_Scale3D = new Vector3(10, 10, 10);
+        private Vector3 m_Scale3D = new Vector3(1, 1, 1);
 
-        [Tooltip("If you want to update material properties (e.g. _MainTex_ST, _Color) in AnimationClip, " +
+        [Tooltip("Animatable material properties.\n" +
-                 "use this to mark as animatable.")]
+                 "If you want to change the material properties of the ParticleSystem in Animation, enable it.")]
         [SerializeField]
         internal AnimatableProperty[] m_AnimatableProperties = new AnimatableProperty[0];
 
@@ -75,13 +71,12 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private List<ParticleSystem> m_Particles = new List<ParticleSystem>();
 
-        [Tooltip("Particle simulation results are shared within the same group. " +
+        [Tooltip("Mesh sharing.\n" +
-                 "A large number of the same effects can be displayed with a small load.\n" +
+                 "None: disable mesh sharing.\n" +
-                 "None: Disable mesh sharing.\n" +
+                 "Auto: automatically select Primary/Replica.\n" +
-                 "Auto: Automatically select Primary/Replica.\n" +
+                 "Primary: provides particle simulation results to the same group.\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;
 
@@ -93,57 +88,67 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private int m_GroupMaxId;
 
-        [Tooltip("Emission position mode.\n" +
+        [Tooltip("Relative: The particles will be emitted from the scaled position of ParticleSystem.\n" +
-                 "Relative: The particles will be emitted from the scaled position.\n" +
+                 "Absolute: The particles will be emitted from the world position of ParticleSystem.")]
-                 "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(
+        [Tooltip("Transform: Transform.lossyScale (=world scale) will be set to (1, 1, 1)." +
-            "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" +
+        private bool m_Maskable = true;
-                 "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]
-        [Tooltip("Time scale multiplier.")]
-        private float m_TimeScaleMultiplier = 1;
 
         private readonly List<UIParticleRenderer> _renderers = new List<UIParticleRenderer>();
-        private Camera _bakeCamera;
+        private Canvas _canvas;
         private int _groupId;
-        private bool _isScaleStored;
+        private Camera _bakeCamera;
-        private Vector3 _storedScale;
         private DrivenRectTransformTracker _tracker;
+        private Vector3 _storedScale;
+        private bool _isScaleStored;
 
-        /// <summary>
+        public RectTransform rectTransform => transform as RectTransform;
-        /// Should this graphic be considered a target for ray-casting?
+
-        /// </summary>
+        public Canvas canvas
-        public override bool raycastTarget
         {
-            get => false;
+            get
-            set { }
+            {
+                if (_canvas) return _canvas;
+
+                var tr = transform;
+                while (tr && !_canvas)
+                {
+                    if (tr.TryGetComponent(out _canvas)) return _canvas;
+                    tr = tr.parent;
+                }
+
+                return null;
+            }
         }
 
         /// <summary>
-        /// Particle simulation results are shared within the same group.
+        /// Does this graphic allow masking.
-        /// A large number of the same effects can be displayed with a small load.
+        /// </summary>
+        public bool maskable
+        {
+            get => m_Maskable;
+            set
+            {
+                if (value == m_Maskable) return;
+                m_Maskable = value;
+                UpdateRendererMaterial();
+            }
+        }
+
+        /// <summary>
+        /// Mesh sharing.
         /// None: disable mesh sharing.
         /// Auto: automatically select Primary/Replica.
         /// Primary: provides particle simulation results to the same group.
@@ -186,9 +191,9 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// Emission position mode.
+        /// Particle position mode.
-        /// Relative: The particles will be emitted from the scaled position.
+        /// Relative: The particles will be emitted from the scaled position of the ParticleSystem.
-        /// Absolute: The particles will be emitted from the world position.
+        /// Absolute: The particles will be emitted from the world position of the ParticleSystem.
         /// </summary>
         public PositionMode positionMode
         {
@@ -201,7 +206,6 @@ 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;
@@ -219,12 +223,8 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// How to automatically adjust when the Canvas scale is changed by the screen size or reference resolution.
+        /// Auto scaling mode.
-        /// <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
@@ -243,35 +243,6 @@ namespace Coffee.UIExtensions
             }
         }
 
-        /// <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);
-        }
-
-        /// <summary>
-        /// Time scale multiplier.
-        /// </summary>
-        public float timeScaleMultiplier
-        {
-            get => m_TimeScaleMultiplier;
-            set => m_TimeScaleMultiplier = value;
-        }
-
         internal bool useMeshSharing => m_MeshSharing != MeshSharing.None;
 
         internal bool isPrimary =>
@@ -317,6 +288,22 @@ namespace Coffee.UIExtensions
 
         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>
@@ -324,15 +311,15 @@ namespace Coffee.UIExtensions
 
         public Vector3 parentScale { get; private set; }
 
-        public Vector3 canvasScale { get; private set; }
+        private Vector3 canvasScale { get; set; }
 
         protected override void OnEnable()
         {
             _isScaleStored = false;
             ResetGroupId();
             UIParticleUpdater.Register(this);
-            RegisterDirtyMaterialCallback(UpdateRendererMaterial);
 
+            //
             if (0 < particles.Count)
             {
                 RefreshParticles(particles);
@@ -342,7 +329,7 @@ namespace Coffee.UIExtensions
                 RefreshParticles();
             }
 
-            base.OnEnable();
+            UpdateRendererMaterial();
         }
 
         /// <summary>
@@ -359,9 +346,15 @@ namespace Coffee.UIExtensions
             _isScaleStored = false;
             UIParticleUpdater.Unregister(this);
             _renderers.ForEach(r => r.Reset());
-            UnregisterDirtyMaterialCallback(UpdateRendererMaterial);
+            _canvas = null;
+        }
 
-            base.OnDisable();
+        /// <summary>
+        /// Called when the state of the parent Canvas is changed.
+        /// </summary>
+        protected override void OnCanvasHierarchyChanged()
+        {
+            _canvas = null;
         }
 
         /// <summary>
@@ -371,6 +364,14 @@ namespace Coffee.UIExtensions
         {
         }
 
+        /// <summary>
+        /// This function is called when a direct or indirect parent of the transform of the GameObject has changed.
+        /// </summary>
+        protected override void OnTransformParentChanged()
+        {
+            _canvas = null;
+        }
+
         void ISerializationCallbackReceiver.OnBeforeSerialize()
         {
         }
@@ -461,21 +462,6 @@ 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 == null || r.material == null) continue;
-                result.Add(r.material);
-            }
-        }
-
         /// <summary>
         /// Refresh UIParticle using the ParticleSystem instance.
         /// </summary>
@@ -489,15 +475,12 @@ namespace Coffee.UIExtensions
         /// </summary>
         public void SetParticleSystemInstance(GameObject instance, bool destroyOldParticles)
         {
-            if (instance == null) return;
+            if (!instance) return;
 
             var childCount = transform.childCount;
             for (var i = 0; i < childCount; i++)
             {
                 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)
                 {
@@ -518,7 +501,7 @@ namespace Coffee.UIExtensions
         /// </summary>
         public void SetParticleSystemPrefab(GameObject prefab)
         {
-            if (prefab == null) return;
+            if (!prefab) return;
 
             SetParticleSystemInstance(Instantiate(prefab.gameObject), true);
         }
@@ -538,14 +521,12 @@ namespace Coffee.UIExtensions
         /// </summary>
         private void RefreshParticles(GameObject root)
         {
-            if (root == null) return;
+            if (!root) return;
             root.GetComponentsInChildren(true, particles);
             for (var i = particles.Count - 1; 0 <= i; i--)
             {
                 var ps = particles[i];
-                if (!ps
+                if (!ps || ps.GetComponentInParent<UIParticle>(true) != this)
-                    || ps.gameObject.CompareTag("EditorOnly") // Ignore "EditorOnly" tagged ParticleSystems.
-                    || ps.GetComponentInParent<UIParticle>(true) != this) // Ignore ParticleSystems that are not under this UIParticle.
                 {
                     particles.RemoveAt(i);
                 }
@@ -593,15 +574,13 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < particleSystems.Count; i++)
             {
                 var ps = particleSystems[i];
-                if (ps == null) continue;
+                if (!ps) continue;
-
+                GetRenderer(j++).Set(this, ps, false);
-                var mainEmitter = ps.GetMainEmitter(particleSystems);
-                GetRenderer(j++).Set(this, ps, false, mainEmitter);
 
                 // If the trail is enabled, set it additionally.
                 if (ps.trails.enabled)
                 {
-                    GetRenderer(j++).Set(this, ps, true, mainEmitter);
+                    GetRenderer(j++).Set(this, ps, true);
                 }
             }
         }
@@ -623,12 +602,8 @@ namespace Coffee.UIExtensions
             }
 
             var currentScale = transform.localScale;
-            if (!_isScaleStored)
+            _storedScale = currentScale;
-            {
-                _storedScale = currentScale.IsVisible() ? currentScale : Vector3.one;
             _isScaleStored = true;
-            }
-
             _tracker.Add(this, rectTransform, DrivenTransformProperties.Scale);
             var newScale = parentScale.Inverse();
             if (currentScale != newScale)
@@ -644,7 +619,7 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < _renderers.Count; i++)
             {
                 var r = _renderers[i];
-                if (r != null) continue;
+                if (r) continue;
 
                 RefreshParticles(particles);
                 break;
@@ -654,7 +629,7 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < _renderers.Count; i++)
             {
                 var r = _renderers[i];
-                if (r == null) continue;
+                if (!r) continue;
 
                 r.UpdateMesh(bakeCamera);
             }
@@ -667,23 +642,12 @@ namespace Coffee.UIExtensions
                 : Random.Range(m_GroupId, m_GroupMaxId + 1);
         }
 
-        protected override void UpdateMaterial()
-        {
-        }
-
-        /// <summary>
-        /// Call to update the geometry of the Graphic onto the CanvasRenderer.
-        /// </summary>
-        protected override void UpdateGeometry()
-        {
-        }
-
         private void UpdateRendererMaterial()
         {
             for (var i = 0; i < _renderers.Count; i++)
             {
                 var r = _renderers[i];
-                if (r == null) continue;
+                if (!r) continue;
                 r.maskable = maskable;
                 r.SetMaterialDirty();
             }
@@ -696,7 +660,7 @@ namespace Coffee.UIExtensions
                 _renderers.Add(UIParticleRenderer.AddRenderer(this, index));
             }
 
-            if (_renderers[index] == null)
+            if (!_renderers[index])
             {
                 _renderers[index] = UIParticleRenderer.AddRenderer(this, index);
             }
@@ -706,17 +670,8 @@ namespace Coffee.UIExtensions
 
         private Camera GetBakeCamera()
         {
-            if (canvas == null) return Camera.main;
+            if (!canvas) return Camera.main;
-            if (!useCustomView && canvas.renderMode != RenderMode.ScreenSpaceOverlay && canvas.rootCanvas.worldCamera)
+            if (_bakeCamera) return _bakeCamera;
-            {
-                return canvas.rootCanvas.worldCamera;
-            }
-
-            if (_bakeCamera != null)
-            {
-                _bakeCamera.orthographicSize = useCustomView ? customViewSize : 10;
-                return _bakeCamera;
-            }
 
             // Find existing baking camera.
             var childCount = transform.childCount;
@@ -731,9 +686,13 @@ namespace Coffee.UIExtensions
             }
 
             // Create baking camera.
-            if (_bakeCamera == null)
+            if (!_bakeCamera)
             {
-                var go = new GameObject("[generated] UIParticle BakingCamera");
+                var go = new GameObject("[generated] UIParticle BakingCamera")
+                {
+                    // hideFlags = HideFlags.HideAndDontSave
+                    hideFlags = HideFlags.DontSave
+                };
                 go.SetActive(false);
                 go.transform.SetParent(transform, false);
                 _bakeCamera = go.AddComponent<Camera>();
@@ -741,7 +700,7 @@ namespace Coffee.UIExtensions
 
             // Setup baking camera.
             _bakeCamera.enabled = false;
-            _bakeCamera.orthographicSize = useCustomView ? customViewSize : 10;
+            _bakeCamera.orthographicSize = 1000;
             _bakeCamera.transform.SetPositionAndRotation(new Vector3(0, 0, -1000), Quaternion.identity);
             _bakeCamera.orthographic = true;
             _bakeCamera.farClipPlane = 2000f;
@@ -752,9 +711,6 @@ namespace Coffee.UIExtensions
             _bakeCamera.renderingPath = RenderingPath.Forward;
             _bakeCamera.useOcclusionCulling = false;
 
-            _bakeCamera.gameObject.SetActive(false);
-            _bakeCamera.gameObject.hideFlags = UIParticleProjectSettings.globalHideFlags;
-
             return _bakeCamera;
         }
     }

Packages/src/Runtime/UIParticle.cs.meta

@@ -5,7 +5,7 @@ MonoImporter:
   serializedVersion: 2
   defaultReferences: []
   executionOrder: 0
-  icon: {instanceID: 0}
+  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
   userData: 
   assetBundleName: 
   assetBundleVariant: 

Packages/src/Runtime/UIParticleAttractor.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using Coffee.UIParticleInternal;
 using UnityEngine;
 using UnityEngine.Events;
@@ -7,7 +6,7 @@ using UnityEngine.Events;
 namespace Coffee.UIExtensions
 {
     [ExecuteAlways]
-    public class UIParticleAttractor : MonoBehaviour, ISerializationCallbackReceiver
+    public class UIParticleAttractor : MonoBehaviour
     {
         public enum Movement
         {
@@ -23,12 +22,8 @@ namespace Coffee.UIExtensions
         }
 
         [SerializeField]
-        [HideInInspector]
         private ParticleSystem m_ParticleSystem;
 
-        [SerializeField]
-        private List<ParticleSystem> m_ParticleSystems = new List<ParticleSystem>();
-
         [Range(0.1f, 10f)]
         [SerializeField]
         private float m_DestinationRadius = 1;
@@ -50,7 +45,7 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private UnityEvent m_OnAttracted;
 
-        private List<UIParticle> _uiParticles = new List<UIParticle>();
+        private UIParticle _uiParticle;
 
         public float destinationRadius
         {
@@ -89,46 +84,25 @@ namespace Coffee.UIExtensions
         }
 
         /// <summary>
-        /// The target ParticleSystems to attract. Use <see cref="AddParticleSystem"/> and
+        /// The target ParticleSystem to attract.
-        /// <see cref="RemoveParticleSystem"/> to modify the list.
         /// </summary>
-        public IReadOnlyList<ParticleSystem> particleSystems => m_ParticleSystems;
+#if UNITY_EDITOR
-
+        public new ParticleSystem particleSystem
-        public void AddParticleSystem(ParticleSystem ps)
+#else
+        public ParticleSystem particleSystem
+#endif
         {
-            if (m_ParticleSystems == null)
+            get => m_ParticleSystem;
+            set
             {
-                m_ParticleSystems = new List<ParticleSystem>();
+                m_ParticleSystem = value;
+                ApplyParticleSystem();
             }
-
-            var i = m_ParticleSystems.IndexOf(ps);
-            if (0 <= i) return; // Already added: skip
-
-            m_ParticleSystems.Add(ps);
-            _uiParticles.Clear();
-        }
-
-        public void RemoveParticleSystem(ParticleSystem ps)
-        {
-            if (m_ParticleSystems == null)
-            {
-                return;
-            }
-
-            var i = m_ParticleSystems.IndexOf(ps);
-            if (i < 0) return; // Not found. skip
-
-            m_ParticleSystems.RemoveAt(i);
-            _uiParticles.Clear();
-        }
-
-        private void Awake()
-        {
-            UpgradeIfNeeded();
         }
 
         private void OnEnable()
         {
+            ApplyParticleSystem();
             UIParticleUpdater.Register(this);
         }
 
@@ -139,31 +113,21 @@ namespace Coffee.UIExtensions
 
         private void OnDestroy()
         {
-            _uiParticles = null;
+            _uiParticle = null;
-            m_ParticleSystems = null;
+            m_ParticleSystem = null;
         }
 
         internal void Attract()
         {
-            // Collect UIParticle if needed (same size as m_ParticleSystems)
+            if (m_ParticleSystem == null) return;
-            CollectUIParticlesIfNeeded();
 
-            for (var particleIndex = 0; particleIndex < m_ParticleSystems.Count; particleIndex++)
+            var count = m_ParticleSystem.particleCount;
-            {
+            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);
-                particleSystem.GetParticles(particles, count);
+            m_ParticleSystem.GetParticles(particles, count);
 
-                var uiParticle = _uiParticles[particleIndex];
+            var dstPos = GetDestinationPosition();
-                var dstPos = GetDestinationPosition(uiParticle, particleSystem);
             for (var i = 0; i < count; i++)
             {
                 // Attracted
@@ -202,33 +166,32 @@ namespace Coffee.UIExtensions
                 particles[i] = p;
             }
 
-                particleSystem.SetParticles(particles, count);
+            m_ParticleSystem.SetParticles(particles, count);
-            }
         }
 
-        private Vector3 GetDestinationPosition(UIParticle uiParticle, ParticleSystem particleSystem)
+        private Vector3 GetDestinationPosition()
         {
-            var isUI = uiParticle != null && uiParticle.enabled;
+            var isUI = _uiParticle && _uiParticle.enabled;
-            var psPos = particleSystem.transform.position;
+            var psPos = m_ParticleSystem.transform.position;
             var attractorPos = transform.position;
             var dstPos = attractorPos;
-            var isLocalSpace = particleSystem.IsLocalSpace();
+            var isLocalSpace = m_ParticleSystem.IsLocalSpace();
 
             if (isLocalSpace)
             {
-                dstPos = particleSystem.transform.InverseTransformPoint(dstPos);
+                dstPos = m_ParticleSystem.transform.InverseTransformPoint(dstPos);
             }
 
             if (isUI)
             {
-                var inverseScale = uiParticle.parentScale.Inverse();
+                var 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;
@@ -274,59 +237,25 @@ namespace Coffee.UIExtensions
             return Vector3.MoveTowards(current, target, speed);
         }
 
-        private void CollectUIParticlesIfNeeded()
+        private void ApplyParticleSystem()
         {
-            if (m_ParticleSystems.Count == 0 || _uiParticles.Count != 0) return;
+            _uiParticle = null;
-
+            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
-        private void OnValidate()
+                if (Application.isPlaying)
-        {
-            _uiParticles.Clear();
-        }
 #endif
-
-        void ISerializationCallbackReceiver.OnBeforeSerialize()
                 {
-            UpgradeIfNeeded();
+                    Debug.LogError("No particle system attached to particle attractor script", this);
                 }
 
-        void ISerializationCallbackReceiver.OnAfterDeserialize()
+                return;
-        {
             }
 
-        private void UpgradeIfNeeded()
+            _uiParticle = m_ParticleSystem.GetComponentInParent<UIParticle>(true);
+            if (_uiParticle && !_uiParticle.particles.Contains(m_ParticleSystem))
             {
-            // Multiple ParticleSystems support: from 'm_ParticleSystem' to 'm_ParticleSystems'
+                _uiParticle = null;
-            if (m_ParticleSystem != null)
-            {
-                if (!m_ParticleSystems.Contains(m_ParticleSystem))
-                {
-                    m_ParticleSystems.Add(m_ParticleSystem);
-                }
-
-                m_ParticleSystem = null;
-                Debug.Log($"Upgraded!");
             }
         }
     }

Packages/src/Runtime/UIParticleAttractor.cs.meta

@@ -5,7 +5,7 @@ MonoImporter:
   serializedVersion: 2
   defaultReferences: []
   executionOrder: 0
-  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
+  icon: {instanceID: 0}
   userData: 
   assetBundleName: 
   assetBundleVariant: 

Packages/src/Runtime/UIParticleProjectSettings.cs

@@ -17,18 +17,6 @@ namespace Coffee.UIExtensions
             set => instance.m_EnableLinearToGamma = value;
         }
 
-
-        [Header("Editor")]
-        [Tooltip("Hide the automatically generated objects.\n" +
-                 "  - UIParticleRenderer\n" +
-                 "  - UIParticle BakingCamera")]
-        [SerializeField]
-        private bool m_HideGeneratedObjects = true;
-
-        public static HideFlags globalHideFlags => instance.m_HideGeneratedObjects
-            ? HideFlags.DontSave | HideFlags.NotEditable | HideFlags.HideInHierarchy | HideFlags.HideInInspector
-            : HideFlags.DontSave | HideFlags.NotEditable;
-
 #if UNITY_EDITOR
         [SettingsProvider]
         private static SettingsProvider CreateSettingsProvider()

Packages/src/Runtime/UIParticleProjectSettings.cs.meta

@@ -5,7 +5,7 @@ MonoImporter:
   serializedVersion: 2
   defaultReferences: []
   executionOrder: 0
-  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
+  icon: {instanceID: 0}
   userData: 
   assetBundleName: 
   assetBundleVariant: 

Packages/src/Runtime/UIParticleRenderer.cs

@@ -4,6 +4,7 @@
 #elif UNITY_2022_3_OR_NEWER
 #define PS_BAKE_API_V2
 #endif
+
 using System;
 using System.Collections.Generic;
 using Coffee.UIParticleInternal;
@@ -15,7 +16,6 @@ using UnityEngine.UI;
 
 namespace Coffee.UIExtensions
 {
-    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
     [ExecuteAlways]
     [RequireComponent(typeof(RectTransform))]
     [RequireComponent(typeof(CanvasRenderer))]
@@ -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;
@@ -38,10 +38,10 @@ namespace Coffee.UIExtensions
         private float _prevCanvasScale;
         private Vector3 _prevPsPos;
         private Vector3 _prevScale;
+        private bool _isPrevStored;
         private Vector2Int _prevScreenSize;
         private bool _preWarm;
         private ParticleSystemRenderer _renderer;
-        private ParticleSystem _mainEmitter;
 
         public override Texture mainTexture => _isTrail ? null : _particleSystem.GetTextureForSprite();
 
@@ -55,7 +55,7 @@ namespace Coffee.UIExtensions
                 s_Corners[1] = transform.TransformPoint(_lastBounds.min.x, _lastBounds.max.y, 0);
                 s_Corners[2] = transform.TransformPoint(_lastBounds.max.x, _lastBounds.max.y, 0);
                 s_Corners[3] = transform.TransformPoint(_lastBounds.max.x, _lastBounds.min.y, 0);
-                if (canvas != null)
+                if (canvas)
                 {
                     var worldToLocalMatrix = canvas.rootCanvas.transform.worldToLocalMatrix;
                     for (var i = 0; i < 4; ++i)
@@ -95,7 +95,7 @@ namespace Coffee.UIExtensions
         {
             get
             {
-                if (_materialForRendering == null)
+                if (!_materialForRendering)
                 {
                     _materialForRendering = base.materialForRendering;
                 }
@@ -106,7 +106,7 @@ namespace Coffee.UIExtensions
 
         public void Reset(int index = -1)
         {
-            if (_renderer != null)
+            if (_renderer)
             {
                 _renderer.enabled = true;
             }
@@ -114,14 +114,13 @@ namespace Coffee.UIExtensions
             _parent = null;
             _particleSystem = null;
             _renderer = null;
-            _mainEmitter = null;
             if (0 <= index)
             {
                 _index = index;
             }
 
             //_emitter = null;
-            if (isActiveAndEnabled)
+            if (this && isActiveAndEnabled)
             {
                 material = null;
                 canvasRenderer.Clear();
@@ -139,8 +138,7 @@ namespace Coffee.UIExtensions
         {
             base.OnEnable();
 
-            hideFlags = UIParticleProjectSettings.globalHideFlags;
+            if (!s_CombineInstances[0].mesh)
-            if (s_CombineInstances[0].mesh == null)
             {
                 s_CombineInstances[0].mesh = new Mesh
                 {
@@ -164,7 +162,7 @@ namespace Coffee.UIExtensions
             // Create renderer object.
             var go = new GameObject("[generated] UIParticleRenderer", typeof(UIParticleRenderer))
             {
-                hideFlags = UIParticleProjectSettings.globalHideFlags,
+                hideFlags = HideFlags.HideAndDontSave,
                 layer = parent.gameObject.layer
             };
 
@@ -204,6 +202,7 @@ namespace Coffee.UIExtensions
                 return modifiedMaterial;
             }
 
+            //
             var hash = new Hash128(
                 modifiedMaterial ? (uint)modifiedMaterial.GetInstanceID() : 0,
                 texture ? (uint)texture.GetInstanceID() : 0,
@@ -226,7 +225,7 @@ namespace Coffee.UIExtensions
             return _modifiedMaterial;
         }
 
-        public void Set(UIParticle parent, ParticleSystem ps, bool isTrail, ParticleSystem mainEmitter)
+        public void Set(UIParticle parent, ParticleSystem ps, bool isTrail)
         {
             _parent = parent;
             maskable = parent.maskable;
@@ -249,7 +248,10 @@ namespace Coffee.UIExtensions
 
             ps.TryGetComponent(out _renderer);
             _renderer.enabled = false;
+
+            //_emitter = emitter;
             _isTrail = isTrail;
+
             _renderer.GetSharedMaterials(s_Materials);
             material = s_Materials[isTrail ? 1 : 0];
             s_Materials.Clear();
@@ -266,7 +268,6 @@ namespace Coffee.UIExtensions
             _prevScreenSize = new Vector2Int(Screen.width, Screen.height);
             _prevCanvasScale = canvas ? canvas.scaleFactor : 1f;
             _delay = true;
-            _mainEmitter = mainEmitter;
 
             canvasRenderer.SetTexture(null);
 
@@ -283,6 +284,10 @@ namespace Coffee.UIExtensions
                 || !transform.lossyScale.GetScaled(_parent.scale3DForCalc).IsVisible() // Scale is not visible.
                 || (!_particleSystem.IsAlive() && !_particleSystem.isPlaying) // No particle.
                 || (_isTrail && !_particleSystem.trails.enabled) // Trail, but it is not enabled.
+#if UNITY_2018_3_OR_NEWER
+                || canvasRenderer.GetInheritedAlpha() <
+                0.01f // #102: Do not bake particle system to mesh when the alpha is zero.
+#endif
             )
             {
                 Profiler.BeginSample("[UIParticleRenderer] Clear Mesh");
@@ -294,31 +299,13 @@ namespace Coffee.UIExtensions
                 return;
             }
 
-            // Reset custom data.
-            // var customData = _particleSystem.customData;
-            // if (!customData.enabled || customData.GetMode(ParticleSystemCustomData.Custom1) == ParticleSystemCustomDataMode.Disabled)
-            // {
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 0, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 1, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 2, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom1, 3, 0);
-            // }
-            //
-            // if (!customData.enabled || customData.GetMode(ParticleSystemCustomData.Custom2) == ParticleSystemCustomDataMode.Disabled)
-            // {
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 0, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 1, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 2, 0);
-            //     customData.SetVector(ParticleSystemCustomData.Custom2, 3, 0);
-            // }
-
             var main = _particleSystem.main;
             var scale = GetWorldScale();
             var psPos = _particleSystem.transform.position;
 
             // Simulate particles.
             Profiler.BeginSample("[UIParticle] Bake Mesh > Simulate Particles");
-            if (!_isTrail && _parent.canSimulate && !_mainEmitter)
+            if (!_isTrail && _parent.canSimulate)
             {
 #if UNITY_EDITOR
                 if (!Application.isPlaying)
@@ -329,13 +316,6 @@ namespace Coffee.UIExtensions
 #endif
                 {
                     ResolveResolutionChange(psPos, scale);
-
-                    // fix: second and subsequent bursts not displayed when world simulation and non-looping. (#326)
-                    if (!_particleSystem.IsLocalSpace() && !main.loop && _particleSystem.time == 0)
-                    {
-                        _delay = true;
-                    }
-
                     Simulate(scale, _parent.isPaused || _delay);
 
                     if (_delay && !_parent.isPaused)
@@ -443,16 +423,17 @@ namespace Coffee.UIExtensions
                     workerMesh.LinearToGamma();
                 }
 
-                var components = InternalListPool<Component>.Rent();
+                var components = ListPool<Component>.Rent();
                 GetComponents(typeof(IMeshModifier), components);
+
+#pragma warning disable CS0618 // Type or member is obsolete
                 for (var i = 0; i < components.Count; i++)
                 {
-#pragma warning disable CS0618 // Type or member is obsolete
                     ((IMeshModifier)components[i]).ModifyMesh(workerMesh);
-#pragma warning restore CS0618 // Type or member is obsolete
                 }
+#pragma warning restore CS0618 // Type or member is obsolete
 
-                InternalListPool<Component>.Return(ref components);
+                ListPool<Component>.Return(ref components);
             }
 
             Profiler.EndSample();
@@ -464,25 +445,22 @@ namespace Coffee.UIExtensions
 
             // Get grouped renderers.
             Profiler.BeginSample("[UIParticleRenderer] Set Mesh");
-            var renderers = InternalListPool<UIParticleRenderer>.Rent();
+            s_Renderers.Clear();
             if (_parent.useMeshSharing)
             {
-                UIParticleUpdater.GetGroupedRenderers(_parent.groupId, _index, renderers);
+                UIParticleUpdater.GetGroupedRenderers(_parent.groupId, _index, s_Renderers);
             }
 
-            for (var i = 0; i < renderers.Count; i++)
+            for (var i = 0; i < s_Renderers.Count; i++)
             {
-                var r = renderers[i];
+                if (s_Renderers[i] == this) continue;
-                if (r == this) continue;
 
-                r.canvasRenderer.SetMesh(workerMesh);
+                s_Renderers[i].canvasRenderer.SetMesh(workerMesh);
-                r._lastBounds = _lastBounds;
+                s_Renderers[i]._lastBounds = _lastBounds;
-                r.canvasRenderer.materialCount = 1;
+                s_Renderers[i].canvasRenderer.materialCount = 1;
-                r.canvasRenderer.SetMaterial(materialForRendering, 0);
+                s_Renderers[i].canvasRenderer.SetMaterial(materialForRendering, 0);
             }
 
-            InternalListPool<UIParticleRenderer>.Return(ref renderers);
-
             if (_parent.canRender)
             {
                 canvasRenderer.SetMesh(workerMesh);
@@ -493,6 +471,8 @@ namespace Coffee.UIExtensions
             }
 
             Profiler.EndSample();
+
+            s_Renderers.Clear();
         }
 
         public override void SetMaterialDirty()
@@ -564,30 +544,6 @@ namespace Coffee.UIExtensions
                     return Matrix4x4.Translate(psPos)
                            * Matrix4x4.Scale(scale);
                 case ParticleSystemSimulationSpace.World:
-                    if (_isTrail)
-                    {
-                        return Matrix4x4.Translate(psPos)
-                               * Matrix4x4.Scale(scale)
-                               * Matrix4x4.Translate(-psPos);
-                    }
-
-                    if (_mainEmitter)
-                    {
-                        if (_mainEmitter.IsLocalSpace())
-                        {
-                            return Matrix4x4.Translate(psPos)
-                                   * Matrix4x4.Scale(scale)
-                                   * Matrix4x4.Translate(-psPos);
-                        }
-                        else
-                        {
-                            psPos = _particleSystem.transform.position - _mainEmitter.transform.position;
-                            return Matrix4x4.Translate(psPos)
-                                   * Matrix4x4.Scale(scale)
-                                   * Matrix4x4.Translate(-psPos);
-                        }
-                    }
-
                     return Matrix4x4.Scale(scale);
                 case ParticleSystemSimulationSpace.Custom:
                     return Matrix4x4.Translate(_particleSystem.main.customSimulationSpace.position.GetScaled(scale))
@@ -650,7 +606,6 @@ namespace Coffee.UIExtensions
                 : main.useUnscaledTime
                     ? Time.unscaledDeltaTime
                     : Time.deltaTime;
-            deltaTime *= _parent.timeScaleMultiplier;
 
             // Pre-warm:
             if (0 < deltaTime && _preWarm)
@@ -731,7 +686,7 @@ namespace Coffee.UIExtensions
             if (s_Mpb.isEmpty) return;
 
             // #41: Copy the value from MaterialPropertyBlock to CanvasRenderer
-            if (materialForRendering == null) return;
+            if (!materialForRendering) return;
 
             for (var i = 0; i < _parent.m_AnimatableProperties.Length; i++)
             {

Packages/src/Runtime/UIParticleUpdater.cs

@@ -16,50 +16,37 @@ namespace Coffee.UIExtensions
 
         public static void Register(UIParticle particle)
         {
-            if (particle == null) return;
+            if (!particle) return;
             s_ActiveParticles.Add(particle);
         }
 
         public static void Unregister(UIParticle particle)
         {
-            if (particle == null) return;
+            if (!particle) return;
             s_ActiveParticles.Remove(particle);
         }
 
         public static void Register(UIParticleAttractor attractor)
         {
-            if (attractor == null) return;
+            if (!attractor) return;
             s_ActiveAttractors.Add(attractor);
         }
 
         public static void Unregister(UIParticleAttractor attractor)
         {
-            if (attractor == null) return;
+            if (!attractor) return;
             s_ActiveAttractors.Remove(attractor);
         }
 
 #if UNITY_EDITOR
         [InitializeOnLoadMethod]
-        private static void InitializeOnLoad()
-        {
-            UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
-
-            EditorApplication.playModeStateChanged += state =>
-            {
-                UIExtraCallbacks.onAfterCanvasRebuild -= Refresh;
-                if (state == PlayModeStateChange.EnteredEditMode || state == PlayModeStateChange.EnteredPlayMode)
-                {
-                    UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
-                }
-            };
-        }
 #else
         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
+#endif
         private static void InitializeOnLoad()
         {
             UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
         }
-#endif
 
         private static void Refresh()
         {
@@ -71,7 +58,7 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
                 var uip = s_ActiveParticles[i];
-                if (uip == null || uip.canvas == null || !uip.isPrimary || !s_UpdatedGroupIds.Add(uip.groupId)) continue;
+                if (!uip || !uip.canvas || !uip.isPrimary || !s_UpdatedGroupIds.Add(uip.groupId)) continue;
 
                 uip.UpdateTransformScale();
                 uip.UpdateRenderers();
@@ -81,7 +68,7 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
                 var uip = s_ActiveParticles[i];
-                if (uip == null || uip.canvas == null) continue;
+                if (!uip || !uip.canvas) continue;
 
                 uip.UpdateTransformScale();
 
@@ -125,7 +112,7 @@ namespace Coffee.UIExtensions
                 var uip = s_ActiveParticles[i];
                 if (!uip.useMeshSharing || uip.groupId != groupId) continue;
                 if (uip.isPrimary) return uip;
-                if (primary == null && uip.canSimulate) primary = uip;
+                if (!primary && uip.canSimulate) primary = uip;
             }
 
             return primary;

Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs

@@ -12,8 +12,12 @@ namespace Coffee.UIParticleInternal
         public static ParticleSystem.Particle[] GetParticleArray(int size)
         {
             if (s_TmpParticles.Length < size)
+            {
+                while (s_TmpParticles.Length < size)
                 {
                     size = Mathf.NextPowerOfTwo(size);
+                }
+
                 s_TmpParticles = new ParticleSystem.Particle[size];
             }
 
@@ -84,11 +88,11 @@ namespace Coffee.UIParticleInternal
                 var bRenderer = b.GetComponent<ParticleSystemRenderer>();
 
                 // Render queue: ascending
-                var aMat = aRenderer.sharedMaterial != null ? aRenderer.sharedMaterial : aRenderer.trailMaterial;
+                var aMat = aRenderer.sharedMaterial ? aRenderer.sharedMaterial : aRenderer.trailMaterial;
-                var bMat = bRenderer.sharedMaterial != null ? bRenderer.sharedMaterial : bRenderer.trailMaterial;
+                var bMat = bRenderer.sharedMaterial ? bRenderer.sharedMaterial : bRenderer.trailMaterial;
-                if (aMat == null && bMat == null) return 0;
+                if (!aMat && !bMat) return 0;
-                if (aMat == null) return -1;
+                if (!aMat) return -1;
-                if (bMat == null) return 1;
+                if (!bMat) return 1;
 
                 if (sortByMaterial)
                 {
@@ -142,7 +146,7 @@ namespace Coffee.UIParticleInternal
 
         public static Texture2D GetTextureForSprite(this ParticleSystem self)
         {
-            if (self == null) return null;
+            if (!self) return null;
 
             // Get sprite's texture.
             var tsaModule = self.textureSheetAnimation;
@@ -151,7 +155,7 @@ namespace Coffee.UIParticleInternal
             for (var i = 0; i < tsaModule.spriteCount; i++)
             {
                 var sprite = tsaModule.GetSprite(i);
-                if (sprite == null) continue;
+                if (!sprite) continue;
 
                 return sprite.GetActualTexture();
             }
@@ -163,38 +167,9 @@ namespace Coffee.UIParticleInternal
         {
             foreach (var p in self)
             {
-                if (p == null) continue;
+                if (!p) continue;
                 action.Invoke(p);
             }
         }
-
-        public static ParticleSystem GetMainEmitter(this ParticleSystem self, List<ParticleSystem> list)
-        {
-            if (self == null || list == null || list.Count == 0) return null;
-
-            for (var i = 0; i < list.Count; i++)
-            {
-                var parent = list[i];
-                if (parent != self && IsSubEmitterOf(self, parent)) return parent;
-            }
-
-            return null;
-        }
-
-        public static bool IsSubEmitterOf(this ParticleSystem self, ParticleSystem parent)
-        {
-            if (self == null || parent == null) return false;
-
-            var subEmitters = parent.subEmitters;
-            if (!subEmitters.enabled) return false; // No sub emitters.
-
-            var count = subEmitters.subEmittersCount;
-            for (var i = 0; i < count; i++)
-            {
-                if (subEmitters.GetSubEmitterSystem(i) == self) return true;
-            }
-
-            return false;
-        }
     }
 }

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

@@ -15,7 +15,7 @@ namespace Coffee.UIExtensions.Demo
 
         private void Start()
         {
-            if (m_Origin == null) return;
+            if (!m_Origin) return;
             m_Origin.SetActive(false);
 
             var parent = m_Origin.transform.parent;

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

@@ -42,7 +42,7 @@ public class UIElementDragger : MonoBehaviour, IBeginDragHandler, IDragHandler,
                 break;
             case Target.Custom:
                 _rectTransform.localPosition += delta;
-                if (m_CustomTarget != null)
+                if (m_CustomTarget)
                 {
                     if (m_UseCanvasScale)
                     {

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

@@ -1,4 +1,3 @@
-using Coffee.UIParticleInternal;
 using UnityEngine;
 using UnityEngine.Serialization;
 using UnityEngine.UI;
@@ -52,7 +51,7 @@ namespace Coffee.UIExtensions.Demo
 
         public void EnableAnimations(bool flag)
         {
-            foreach (var animator in Misc.FindObjectsOfType<Animator>())
+            foreach (var animator in FindObjectsOfType<Animator>())
             {
                 animator.enabled = flag;
             }
@@ -80,7 +79,7 @@ namespace Coffee.UIExtensions.Demo
 
         public void UIParticle_Scale(float scale)
         {
-            foreach (var uip in Misc.FindObjectsOfType<UIParticle>())
+            foreach (var uip in FindObjectsOfType<UIParticle>())
             {
                 uip.scale = scale;
             }
@@ -88,7 +87,7 @@ namespace Coffee.UIExtensions.Demo
 
         public void ParticleSystem_WorldSpaseSimulation(bool flag)
         {
-            foreach (var p in Misc.FindObjectsOfType<ParticleSystem>())
+            foreach (var p in FindObjectsOfType<ParticleSystem>())
             {
                 var main = p.main;
                 main.simulationSpace = flag
@@ -124,7 +123,7 @@ namespace Coffee.UIExtensions.Demo
 
         public void ParticleSystem_SetScale(float scale)
         {
-            foreach (var ps in Misc.FindObjectsOfType<ParticleSystem>())
+            foreach (var ps in FindObjectsOfType<ParticleSystem>())
             {
                 ps.transform.localScale = new Vector3(scale, scale, scale);
             }

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

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

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

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

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

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

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

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

Packages/src/Shaders/UIAdditive.shader

@@ -40,10 +40,7 @@
         Lighting Off
         ZWrite Off
         ZTest [unity_GUIZTestMode]
-        Fog
+        Fog { Mode Off }
-        {
-            Mode Off
-        }
         Blend One One
 
         ColorMask [_ColorMask]

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": "4.12.1",
+  "version": "5.0.0-preview.2",
   "unity": "2018.2",
   "license": "MIT",
   "repository": {

ProjectSettings/MinimalResourceSettings.json

@@ -1,11 +0,0 @@
-{
-    "MonoBehaviour": {
-        "m_Enabled": true,
-        "m_EditorHideFlags": 0,
-        "m_Name": "",
-        "m_EditorClassIdentifier": "",
-        "m_OutputDllPaths": [
-            "Packages/com.coffee.ui-particle/Runtime/Coffee.UIParticle.R.dll"
-        ]
-    }
-}

ProjectSettings/ProjectSettings.asset

@@ -124,7 +124,7 @@ PlayerSettings:
   bundleVersion: 1.0
   preloadedAssets:
   - {fileID: 11400000, guid: 86087a0847f384b538391745dad4565c, type: 2}
-  - {fileID: 11400000, guid: 4b9df7b8a4193489299b8f477348ae0c, type: 2}
+  - {fileID: 11400000, guid: be3e05903ef7041d39b3ef8ecdd47f08, type: 2}
   metroInputSource: 0
   wsaTransparentSwapchain: 0
   m_HolographicPauseOnTrackingLoss: 1
@@ -520,7 +520,7 @@ PlayerSettings:
   webGLTemplate: APPLICATION:Default
   webGLAnalyzeBuildSize: 0
   webGLUseEmbeddedResources: 0
-  webGLCompressionFormat: 2
+  webGLCompressionFormat: 1
   webGLLinkerTarget: 0
   webGLThreadsSupport: 0
   scriptingDefineSymbols: