chore(release): 4.7.0 [skip ci]

# [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](1d40e24c74)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
* UIParticle is scaled by canvas size even when `AutoScalingMode.None` and `ScalingMode.Local` ([54a4b1c](54a4b1cdfd)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)
* UIParticle is scaled incorrectly with nested canvases ([f26920f](f26920f982)), closes [#313](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/313)

### Features

* reset previous position on start play for world space simulation ([3880484](3880484ce5)), closes [#303](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/303)
* restore `Transform.localScale` when setting `autoScalingMode` to something other than `Transform` ([5505247](5505247a94))

.editorconfig

@@ -0,0 +1,208 @@
+root = true
+
+[*.json]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.asmdef]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+# C# files
+[*.cs]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+csharp_style_implicit_object_creation_when_type_is_apparent = false
+resharper_object_creation_when_type_evident = explicitly_typed
+
+# Keep
+csharp_keep_existing_attribute_arrangement = true
+csharp_keep_existing_embedded_arrangement = true
+csharp_keep_user_linebreaks = true
+csharp_keep_existing_linebreaks = true
+csharp_place_simple_embedded_statement_on_same_line = false
+csharp_place_simple_blocks_on_single_line = false
+csharp_keep_existing_initializer_arrangement = true
+csharp_keep_existing_arrangement = true
+
+# Standard properties
+end_of_line = lf
+insert_final_newline = true
+
+# Brace preferences
+csharp_brace_style = next_line
+csharp_braces_for_ifelse = required_for_multiline_statement
+csharp_braces_for_for = required
+csharp_braces_for_foreach = required
+csharp_braces_for_while = required
+csharp_braces_for_dowhile = required
+csharp_braces_for_using = required
+csharp_case_block_braces = next_line
+csharp_initializer_braces = next_line
+
+# New line preferences
+csharp_new_line_before_open_brace = all
+csharp_new_line_before_else = true
+csharp_new_line_before_catch = true
+csharp_new_line_before_finally = true
+csharp_new_line_before_members_in_object_initializers = true
+csharp_new_line_before_members_in_anonymous_types = true
+csharp_new_line_between_query_expression_clauses = true
+
+# Indentation preferences
+csharp_indent_block_contents = true
+csharp_indent_braces = false
+csharp_indent_case_contents = true
+csharp_indent_case_contents_when_block = false
+csharp_indent_switch_labels = true
+csharp_indent_labels = one_less_than_current
+
+# Modifier preferences
+csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:suggestion
+
+# avoid this. unless absolutely necessary
+dotnet_style_qualification_for_field = false:suggestion
+dotnet_style_qualification_for_property = false:suggestion
+dotnet_style_qualification_for_method = false:suggestion
+dotnet_style_qualification_for_event = false:suggestion
+
+# Types: use keywords instead of BCL types, and permit var only when the type is clear
+csharp_style_var_for_built_in_types = true:suggestion
+csharp_style_var_when_type_is_apparent = true:none
+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
+
+# Arguments
+csharp_arguments_literal = named:suggestion
+csharp_arguments_string_literal = named:suggestion
+
+# Naming: public and protected fields -> camelCase
+dotnet_naming_rule.protected_public_fields.severity = suggestion
+dotnet_naming_rule.protected_public_fields.symbols = protected_public_fields
+dotnet_naming_rule.protected_public_fields.style = camel_case
+dotnet_naming_symbols.protected_public_fields.applicable_kinds = field, event
+dotnet_naming_symbols.protected_public_fields.applicable_accessibilities = public, protected
+dotnet_naming_style.camel_case.capitalization = camel_case
+
+# Naming: properties -> camelCase
+dotnet_naming_rule.properties.severity = suggestion
+dotnet_naming_rule.properties.symbols = properties
+dotnet_naming_rule.properties.style = camel_case
+dotnet_naming_symbols.properties.applicable_kinds = property
+
+# Naming: constant fields -> k_PascalCase
+dotnet_naming_rule.constant_fields.severity = suggestion
+dotnet_naming_rule.constant_fields.symbols = constant_fields
+dotnet_naming_rule.constant_fields.style = k_pascal_case
+dotnet_naming_symbols.constant_fields.applicable_kinds = field
+dotnet_naming_symbols.constant_fields.required_modifiers = const
+dotnet_naming_style.k_pascal_case.required_prefix = k_
+dotnet_naming_style.k_pascal_case.capitalization = pascal_case
+
+# Naming: static fields -> s_PascalCase
+dotnet_naming_rule.static_fields_should_have_prefix.severity = suggestion
+dotnet_naming_rule.static_fields_should_have_prefix.symbols = static_fields
+dotnet_naming_rule.static_fields_should_have_prefix.style = s_pascal_case
+dotnet_naming_symbols.static_fields.applicable_kinds = field, property
+dotnet_naming_symbols.static_fields.required_modifiers = static
+dotnet_naming_symbols.static_fields.applicable_accessibilities = private, internal, private_protected
+dotnet_naming_style.s_pascal_case.required_prefix = s_
+dotnet_naming_style.s_pascal_case.capitalization = pascal_case
+
+# Naming: internal and private fields -> _camelCase
+dotnet_naming_rule.private_internal_fields.severity = suggestion
+dotnet_naming_rule.private_internal_fields.symbols = private_internal_fields
+dotnet_naming_rule.private_internal_fields.style = _camel_case
+dotnet_naming_symbols.private_internal_fields.applicable_kinds = field
+dotnet_naming_symbols.private_internal_fields.applicable_accessibilities = private, internal
+dotnet_naming_style._camel_case.required_prefix = _
+dotnet_naming_style._camel_case.capitalization = camel_case
+
+# Code style defaults
+dotnet_sort_system_directives_first = true
+csharp_preserve_single_line_statements = false:none
+csharp_prefer_static_local_function = true:suggestion
+csharp_prefer_simple_using_statement = false:none
+csharp_style_prefer_switch_expression = true:suggestion
+dotnet_style_readonly_field = true:suggestion
+
+# Expression-level preferences
+dotnet_style_object_initializer = true:suggestion
+dotnet_style_collection_initializer = true:suggestion
+dotnet_style_explicit_tuple_names = true:suggestion
+dotnet_style_coalesce_expression = true:suggestion
+dotnet_style_null_propagation = true:suggestion
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion
+dotnet_style_prefer_inferred_tuple_names = true:suggestion
+dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
+dotnet_style_prefer_auto_properties = true:suggestion
+dotnet_style_prefer_conditional_expression_over_assignment = true:silent
+dotnet_style_prefer_conditional_expression_over_return = true:silent
+csharp_prefer_simple_default_expression = true:suggestion
+
+# Expression-bodied members
+csharp_style_expression_bodied_accessors = when_on_single_line:suggestion
+csharp_style_expression_bodied_methods = false:suggestion
+csharp_style_expression_bodied_constructors = false:suggestion
+csharp_style_expression_bodied_operators = false:suggestion
+csharp_style_expression_bodied_properties = when_on_single_line:suggestion
+csharp_style_expression_bodied_indexers = false:suggestion
+csharp_style_expression_bodied_lambdas = when_on_single_line:silent
+csharp_style_expression_bodied_local_functions = false:suggestion
+
+# Pattern matching
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_inlined_variable_declaration = true:suggestion
+
+# Null checking preferences
+csharp_style_throw_expression = true:suggestion
+csharp_style_conditional_delegate_call = true:suggestion
+
+# Other features
+csharp_style_prefer_index_operator = false:none
+csharp_style_prefer_range_operator = false:none
+csharp_style_pattern_local_over_anonymous_function = false:none
+
+# Space preferences
+csharp_space_after_cast = false
+csharp_space_after_colon_in_inheritance_clause = true
+csharp_space_after_comma = true
+csharp_space_after_dot = false
+csharp_space_after_keywords_in_control_flow_statements = true
+csharp_space_after_semicolon_in_for_statement = true
+csharp_space_around_binary_operators = before_and_after
+csharp_space_around_declaration_statements = do_not_ignore
+csharp_space_before_colon_in_inheritance_clause = true
+csharp_space_before_comma = false
+csharp_space_before_dot = false
+csharp_space_before_open_square_brackets = false
+csharp_space_before_semicolon_in_for_statement = false
+csharp_space_between_empty_square_brackets = false
+csharp_space_between_method_call_empty_parameter_list_parentheses = false
+csharp_space_between_method_call_name_and_opening_parenthesis = false
+csharp_space_between_method_call_parameter_list_parentheses = false
+csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
+csharp_space_between_method_declaration_name_and_open_parenthesis = false
+csharp_space_between_method_declaration_parameter_list_parentheses = false
+csharp_space_between_parentheses = false
+csharp_space_between_square_brackets = false
+
+# ReSharper inspection severities
+resharper_check_namespace_highlighting = none
+resharper_for_can_be_converted_to_foreach_highlighting = none
+resharper_xmldoc_indent_text = ZeroIndent

.github/workflows/release.yml

@@ -1,24 +1,103 @@
-name: release
+name: 🔖 Release
 
 on:
+  workflow_dispatch:
   push:
     branches:
-      - preview
-      - main
-      - v*.x
+      - release
+      - release-preview
+      - release-v4
     tags-ignore:
       - "**"
 
 jobs:
   release:
+    name: 🔖 Release (${{ github.ref_name }})
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+      issues: write
+    outputs:
+      channel: ${{ steps.release.outputs.new_release_channel }}
+      released: ${{ steps.release.outputs.new_release_published }}
+      tag: ${{ steps.release.outputs.new_release_git_tag }}
+      version: ${{ steps.release.outputs.new_release_version }}
+      merge_to: ${{ steps.summary.outputs.merge_to }}
+      split_to: ${{ steps.summary.outputs.split_to }}
     steps:
-      - uses: actions/checkout@v2
+      - name: 🚚 Checkout (${{ github.ref_name }})
+        uses: actions/checkout@v4
 
-      - uses: cycjimmy/semantic-release-action@v2
+      - name: 🔖 Run semantic release
+        uses: cycjimmy/semantic-release-action@v4
+        id: release
         with:
+          working_directory: Packages/src
           extra_plugins: |
             @semantic-release/changelog
             @semantic-release/git
         env:
           GITHUB_TOKEN: ${{ github.token }}
+
+      - id: summary
+        run: |
+          echo "🔖 New release published: '${{ steps.release.outputs.new_release_published }}'" | tee -a $GITHUB_STEP_SUMMARY
+          echo "🔖 New release version: '${{ steps.release.outputs.new_release_version }}'" | tee -a $GITHUB_STEP_SUMMARY
+          echo "🔖 New release channel: '${{ steps.release.outputs.new_release_channel }}'" | tee -a $GITHUB_STEP_SUMMARY
+          echo "🔖 New release git tag: '${{ steps.release.outputs.new_release_git_tag }}'" | tee -a $GITHUB_STEP_SUMMARY
+          
+          if [ '${{ 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
+            echo "split_to=main" | tee -a $GITHUB_OUTPUT
+          elif [ '${{ github.ref_name }}' = 'release-preview' ]; then
+            echo "merge_to=develop-preview" | tee -a $GITHUB_OUTPUT
+            echo "split_to=preview" | tee -a $GITHUB_OUTPUT
+          elif [ '${{ 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:
+    if: needs.release.outputs.merge_to != ''
+    needs: release
+    name: 🔀 Merge to ${{ needs.release.outputs.merge_to }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: 🚚 Checkout (${{ needs.release.outputs.merge_to }})
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.release.outputs.merge_to }}
+          fetch-depth: 0
+      - name: 🔀 Merge '${{ needs.release.outputs.tag }}' into '${{ needs.release.outputs.merge_to }}'
+        run: |
+          git config --local user.email "github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+          
+          git merge ${{ needs.release.outputs.tag }}
+          git push origin ${{ needs.release.outputs.merge_to }}
+
+  split-to:
+    if: needs.release.outputs.split_to != ''
+    needs: release
+    name: 🔀 Split package to ${{ needs.release.outputs.split_to }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: 🚚 Checkout (${{ needs.release.outputs.tag }})
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.release.outputs.tag }}
+          fetch-depth: 0
+      - name: 🔀 Split subtree 'Packages/src' to '${{ needs.release.outputs.split_to }}'
+        run: |
+          split_to=${{ needs.release.outputs.split_to }}
+          git branch $split_to origin/$split_to
+          git subtree split --prefix=Packages/src --branch $split_to
+          git tag ${{ needs.release.outputs.version }} $split_to
+          git push origin ${{ needs.release.outputs.version }} $split_to:$split_to

.github/workflows/test.yml

@@ -1,49 +1,72 @@
-# Secrets
-#   UNITY_LICENSE:
-name: test
+# Required secrets
+#   UNITY_LICENSE: The contents of Unity license file
+#   UNITY_EMAIL: Unity user email to login
+#   UNITY_PASSWORD: Unity user password to login
+name: 🧪 Test
+
+env:
+  # MINIMUM_VERSION: The minimum version of Unity.
+  MINIMUM_VERSION: 2019.4
+  # EXCLUDE_FILTER: The excluded versions of Unity.
+  EXCLUDE_FILTER: '(2020.2.0)'
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - develop
+      - develop-preview
+      - develop-4.x
     tags:
       - "!*"
+    paths-ignore:
+      - "*.md"
   pull_request:
     types:
       - opened
       - synchronize
 
 jobs:
-  unity-test:
+  setup:
+    name: ⚙️ Setup
     runs-on: ubuntu-latest
+    outputs:
+      unityVersions: ${{ steps.setup.outputs.unityVersions }}
+    steps:
+      - name: ⚙️ Find target Unity versions
+        id: setup
+        run: |
+          echo "==== Target Unity Versions ===="
+          LATEST_VERSIONS=`npx unity-changeset list --versions --latest-patch --min ${MINIMUM_VERSION} --json --all`
+          # ADDITIONAL_VERSIONS=`npx unity-changeset list --versions --grep '0f' --min ${MINIMUM_VERSION} --json`
+          ADDITIONAL_VERSIONS=[]
+
+          VERSIONS=`echo "[${LATEST_VERSIONS}, ${ADDITIONAL_VERSIONS}]" \
+            | jq -c '[ flatten | sort | unique | .[] | select( test("${{ env.EXCLUDE_FILTER }}") | not ) ]'`
+          echo "unityVersions=${VERSIONS}" | tee $GITHUB_OUTPUT
+
+  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: 4
       matrix:
-        unityVersion: [
-            "2018.3.14f1",
-            "2018.4.30f1",
-            "2019.1.14f1",
-            "2019.2.21f1",
-            "2019.3.15f1",
-            "2019.4.16f1",
-            "2020.1.17f1",
-            "2020.2.1f1",
-          ]
-
+        unityVersion: ${{ fromJson(needs.setup.outputs.unityVersions) }}
     steps:
-      # Checkout sandbox project
-      - uses: actions/checkout@v2
-        with:
-          ref: sandbox
-          submodules: true
-          fetch-depth: 0
+      - name: 🚚 Checkout
+        uses: actions/checkout@v4
 
-      # Update package submodule
-      - name: "Update package submodule"
-        working-directory: Packages/dev
-        run: git checkout ${{ github.sha }}
-
-      - uses: actions/cache@v2
+      - name: 📥 Cache library
+        uses: actions/cache@v4
         with:
           path: Library
           key: Library-${{ matrix.unityVersion }}-${{ github.sha }}
@@ -51,44 +74,22 @@ jobs:
             Library-${{ matrix.unityVersion }}-
             Library-
 
-      # Install codecoverage package
-      - name: "Install codecoverage package"
-        if: startsWith(matrix.unityVersion, '2019.4.')
-        run: |
-          npx openupm-cli add -f com.unity.testtools.codecoverage@0.4.0-preview
-
-      # Run tests
-      - name: "Run tests"
-        uses: game-ci/unity-test-runner@main
+      - name: 🛠️ Build Unity Project
+        uses: game-ci/unity-builder@v4
+        timeout-minutes: 45
         with:
-          unityVersion: ${{ matrix.unityVersion }}
-          customParameters: -nographics -enableCodeCoverage -coverageOptions assemblyFilters:+Coffee.UIParticle.*Tests
-        env:
-          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
+          customImage: ghcr.io/mob-sakai/unity3d:${{ matrix.unityVersion }}
+          targetPlatform: StandaloneLinux64
+          allowDirtyBuild: true
+          customParameters: -nographics
 
-      - uses: actions/upload-artifact@v2
-        if: always()
+      - name: 🧪 Run tests
+        uses: game-ci/unity-test-runner@v4
+        timeout-minutes: 45
         with:
-          name: TestResults-${{ matrix.unityVersion }}
-          path: |
-            artifacts/*.xml
-            CodeCoverage/**/TestCoverageResults_*.xml
-
-  publish:
-    needs: unity-test
-    runs-on: ubuntu-latest
-    if: always()
-    steps:
-      
-      - uses: actions/download-artifact@v2
-        with:
-          path: artifacts
-      
-      - uses: testspace-com/setup-testspace@v1
-        with:
-          domain: ${{github.repository_owner}}
-
-      - name: Push test results
-        if: always()
-        run: |
-          testspace `find . -name '*.xml' | tr '\n' ' '`
+          customImage: ghcr.io/mob-sakai/unity3d:${{ matrix.unityVersion }}
+          # unityVersion: ${{ matrix.unityVersion }}
+          customParameters: -nographics
+          checkName: ${{ matrix.unityVersion }} Test Results
+          githubToken: ${{ github.token }}
+          coverageOptions: "dontClear;generateHtmlReport;generateBadgeReport;pathFilters:+**/Packages/src/**;assemblyFilters:+<packages>,-*.Editor,-*.Test"

.gitignore

@@ -0,0 +1,31 @@
+# Windows
+Thumbs.db
+Desktop.ini
+/*.csproj
+/*.sln
+
+# macOS
+.DS_Store
+
+# Vim
+*.swp
+
+# Unity
+/Logs
+/Library
+/Temp
+Assets/Plugins.meta
+Assets/JMO Assets.meta
+Assets/JMO Assets
+Assets/EffectExamples/
+Assets/EffectExamples.meta
+Assets/Plugins/
+
+# VS
+.vs/
+.vscode/
+.idea/
+obj/
+bin/
+UserSettings/
+*.app

Assets/Demo.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 7c9f7735cc2f24a7ca1c23043e63a6be
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -0,0 +1,116 @@
+using System;
+using System.Linq;
+using System.Reflection;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.UI;
+using Object = UnityEngine.Object;
+
+namespace Coffee.UIExtensions.Demo
+{
+    public class CFX_Demo_With_UIParticle : MonoBehaviour
+    {
+        private MonoBehaviour _demo;
+        private string _demoType;
+        private Toggle _spawnOnUI;
+        private UIParticle _uiParticle;
+
+        // Start is called before the first frame update
+        private void Start()
+        {
+            _uiParticle = GetComponentInChildren<UIParticle>();
+            _spawnOnUI = GetComponentInChildren<Toggle>();
+            _demo = FindObjectOfType("CFX_Demo_New") as MonoBehaviour
+                    ?? FindObjectOfType("WFX_Demo_New") as MonoBehaviour
+                    ?? FindObjectOfType("CFXR_Demo") as MonoBehaviour;
+            _demoType = _demo?.GetType().Name;
+
+            SetCanvasWidth(800);
+            SetCanvasRenderOverlay(true);
+        }
+
+        // Update is called once per frame
+        private void Update()
+        {
+            if (!_spawnOnUI.isOn || !_demo || !Input.GetMouseButtonDown(0)) return;
+
+            if (_demoType == "CFX_Demo_New" || _demoType == "WFX_Demo_New")
+            {
+                SpawnParticleCFX();
+            }
+            else if (_demoType == "CFXR_Demo")
+            {
+                SpawnParticleCFXR();
+            }
+        }
+
+        private void SpawnParticleCFXR()
+        {
+            var particle = _demo.GetType()
+                .GetField("currentEffect", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public)
+                ?.GetValue(_demo) as GameObject;
+            if (!particle) return;
+
+            var instance = Instantiate(particle);
+            foreach (var c in instance.GetComponentsInChildren<MonoBehaviour>())
+            {
+                if (c.GetType().Name == "CFXR_Effect")
+                {
+                    c.enabled = false;
+                }
+            }
+
+            _uiParticle.SetParticleSystemInstance(instance, true);
+        }
+
+        private void SpawnParticleCFX()
+        {
+            var particle = _demo.GetType()
+                .GetMethod("spawnParticle", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public)
+                ?.Invoke(_demo, Array.Empty<object>()) as GameObject;
+            if (!particle) return;
+
+            particle.transform.localScale = Vector3.one;
+            _uiParticle.SetParticleSystemInstance(particle, true);
+        }
+
+        private static Object FindObjectOfType(string typeName)
+        {
+            var type = AppDomain.CurrentDomain.GetAssemblies()
+                .SelectMany(x => x.GetTypes())
+                .FirstOrDefault(x => x.Name == typeName);
+
+            return type == null ? null : FindObjectOfType(type);
+        }
+
+        public void SetCanvasWidth(int width)
+        {
+            var scaler = GetComponentInParent<CanvasScaler>();
+            scaler.screenMatchMode = CanvasScaler.ScreenMatchMode.MatchWidthOrHeight;
+            scaler.matchWidthOrHeight = 0;
+            var resolution = scaler.referenceResolution;
+            resolution.x = width;
+            scaler.referenceResolution = resolution;
+        }
+
+        public void SetCanvasRenderOverlay(bool enable)
+        {
+            var canvas = GetComponentInParent<Canvas>();
+            if (enable)
+            {
+                canvas.renderMode = RenderMode.ScreenSpaceOverlay;
+            }
+            else
+            {
+                canvas.worldCamera = Camera.main;
+                canvas.renderMode = RenderMode.ScreenSpaceCamera;
+                canvas.planeDistance = 5;
+            }
+        }
+
+        public void LoadScene(string scene)
+        {
+            SceneManager.LoadScene(scene);
+        }
+    }
+}

Assets/Demo/Cartoon FX & War FX Demo/ParticleEffectForUGUI.prefab

@@ -63,8 +63,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -90,7 +88,7 @@ GameObject:
   - component: {fileID: 5041533387716296293}
   - component: {fileID: 5122306272436999681}
   m_Layer: 5
-  m_Name: Buttons (1)
+  m_Name: Button - Canvas Width
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -204,8 +202,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -285,8 +281,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -399,8 +393,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -483,8 +475,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10907, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -559,8 +549,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -732,8 +720,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -806,8 +792,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10907, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -828,7 +812,7 @@ GameObject:
   - component: {fileID: 3859681902116860941}
   - component: {fileID: 3859681902116860938}
   m_Layer: 5
-  m_Name: Toggle
+  m_Name: Toggle - Spawn On UI
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -898,8 +882,6 @@ MonoBehaviour:
   onValueChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.Toggle+ToggleEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
   m_IsOn: 1
 --- !u!1 &3859681902214993101
 GameObject:
@@ -965,8 +947,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -1060,8 +1040,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -1101,7 +1079,7 @@ GameObject:
   m_Component:
   - component: {fileID: 3859681902277892211}
   m_Layer: 5
-  m_Name: Particle Size
+  m_Name: Slider - Particle Size
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -1191,8 +1169,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -1265,8 +1241,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10913, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 0
   m_PreserveAspect: 0
@@ -1376,8 +1350,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -1470,8 +1442,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -1580,8 +1550,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10901, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 0
   m_PreserveAspect: 0
@@ -1601,7 +1569,7 @@ GameObject:
   m_Component:
   - component: {fileID: 3859681902805960555}
   m_Layer: 5
-  m_Name: Particle Alpha
+  m_Name: Slider - Particle Alpha
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -1727,8 +1695,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10913, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 0
   m_PreserveAspect: 0
@@ -1802,8 +1768,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -1930,8 +1894,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Slider+SliderEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
 --- !u!1 &3859681903088303440
 GameObject:
   m_ObjectHideFlags: 0
@@ -1997,8 +1959,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -2083,8 +2043,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10907, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -2202,8 +2160,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Slider+SliderEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
 --- !u!1 &3859681903267533664
 GameObject:
   m_ObjectHideFlags: 0
@@ -2267,8 +2223,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -2293,7 +2247,7 @@ GameObject:
   m_Component:
   - component: {fileID: 3859681903288043166}
   m_Layer: 5
-  m_Name: UI Alpha
+  m_Name: Slider - Front UI Alpha
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -2453,8 +2407,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Slider+SliderEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
 --- !u!1 &3859681903619808813
 GameObject:
   m_ObjectHideFlags: 0
@@ -2519,13 +2471,14 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_IsTrail: 0
-  m_IgnoreCanvasScaler: 1
-  m_Scale: 100
+  m_Scale3D: {x: 100, y: 100, z: 100}
   m_AnimatableProperties: []
   m_Particles: []
+  m_MeshSharing: 0
+  m_GroupId: 0
+  m_GroupMaxId: 0
+  m_Maskable: 1
 --- !u!225 &3859681903619808809
 CanvasGroup:
   m_ObjectHideFlags: 0
@@ -2637,8 +2590,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10907, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -2748,8 +2699,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -2822,8 +2771,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10913, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 0
   m_PreserveAspect: 0
@@ -2847,7 +2794,7 @@ GameObject:
   - component: {fileID: 3360835017440122026}
   - component: {fileID: 1366113540849943547}
   m_Layer: 5
-  m_Name: Button (1)
+  m_Name: Button - Camera
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -2899,8 +2846,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -2961,8 +2906,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
 --- !u!114 &1366113540849943547
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -2997,7 +2940,7 @@ GameObject:
   - component: {fileID: 6406053850282885998}
   - component: {fileID: 4557790655482294870}
   m_Layer: 5
-  m_Name: Button
+  m_Name: Button - Overlay
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -3049,8 +2992,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -3111,8 +3052,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 1
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
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 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -3144,7 +3083,7 @@ GameObject:
   - component: {fileID: 711230566651291100}
   - component: {fileID: 1967301068910169843}
   m_Layer: 5
-  m_Name: Buttons
+  m_Name: Button - Render Mode
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -3258,8 +3197,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -3337,8 +3274,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -3417,8 +3352,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -3432,7 +3365,7 @@ MonoBehaviour:
     m_HorizontalOverflow: 0
     m_VerticalOverflow: 0
     m_LineSpacing: 1
-  m_Text: Particle Effect For UGUI v3.0.0 Demo
+  m_Text: Particle Effect For UGUI v4.0.0 Demo
 --- !u!114 &8838998222179528398
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -3577,8 +3510,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
     m_FontSize: 14
@@ -3622,7 +3553,7 @@ GameObject:
   - component: {fileID: 6199819795074822241}
   - component: {fileID: 6942933885432526710}
   m_Layer: 5
-  m_Name: Button
+  m_Name: Button - 800
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -3674,8 +3605,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -3736,8 +3665,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
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 MonoBehaviour:
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@@ -3772,7 +3699,7 @@ GameObject:
   - component: {fileID: 7450843285597770156}
   - component: {fileID: 2242164212718897476}
   m_Layer: 5
-  m_Name: Button (1)
+  m_Name: Button - 1280
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -3824,8 +3751,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -3886,8 +3811,6 @@ MonoBehaviour:
           m_StringArgument: 
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null
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 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -3973,8 +3896,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -4061,8 +3982,6 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-    m_TypeName: UnityEngine.UI.MaskableGraphic+CullStateChangedEvent, UnityEngine.UI,
-      Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
   m_Sprite: {fileID: 10905, guid: 0000000000000000f000000000000000, type: 0}
   m_Type: 1
   m_PreserveAspect: 0
@@ -4120,8 +4039,6 @@ MonoBehaviour:
           m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
           m_IntArgument: 0
           m_FloatArgument: 0
-          m_StringArgument: 
+          m_StringArgument: WarFX Demo New
           m_BoolArgument: 0
         m_CallState: 2
-    m_TypeName: UnityEngine.UI.Button+ButtonClickedEvent, UnityEngine.UI, Version=1.0.0.0,
-      Culture=neutral, PublicKeyToken=null

Assets/Demo/Cartoon FX & War FX Demo/README.md

@@ -1,4 +1,4 @@
 Cartoon FX & War FX Demo
 ===
 
-Please import assets "Cartoon FX Free" and/or "War FX Free" from Unity asset store.
+Please import assets "Cartoon FX Free" and/or "War FX Free" from Unity asset store.

Assets/Demo/Performance Demo.meta

@@ -0,0 +1,8 @@
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+guid: ca0fd7c7ead2c49b1ae139b7963de126
+folderAsset: yes
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Assets/Demo/Performance Demo/Materials.meta

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+guid: 839afb79f79094e6c942050ec5413ebf
+folderAsset: yes
+DefaultImporter:
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Demo/Performance Demo/Materials/UIParticle_PerformanceDemo_Fire.mat

@@ -0,0 +1,88 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 6
+  m_ObjectHideFlags: 0
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+using UnityEngine;
+using UnityEngine.Serialization;
+
+namespace Coffee.UIExtensions.Demo
+{
+    public class UIParticle_PerformanceDemo : MonoBehaviour
+    {
+        [FormerlySerializedAs("copyOrigin")]
+        [SerializeField]
+        private GameObject m_CopyOrigin;
+
+        [FormerlySerializedAs("copyCount")]
+        [SerializeField]
+        public int m_CopyCount;
+
+        [FormerlySerializedAs("root")]
+        [SerializeField]
+        public Canvas m_RootCanvas;
+
+        private void Start()
+        {
+            Application.targetFrameRate = 60;
+
+            if (m_CopyOrigin)
+            {
+                m_CopyOrigin.SetActive(false);
+
+                var parent = m_CopyOrigin.transform.parent;
+                for (var i = 0; i < m_CopyCount; i++)
+                {
+                    var go = Instantiate(m_CopyOrigin, parent, false);
+                    go.name = string.Format("{0} {1}", m_CopyOrigin.name, i + 1);
+                    go.hideFlags = HideFlags.DontSave;
+
+                    go.SetActive(true);
+                }
+            }
+        }
+
+        public void UIParticle_Enable(bool flag)
+        {
+            foreach (var uip in m_RootCanvas.GetComponentsInChildren<UIParticle>(true))
+            {
+                uip.enabled = flag;
+            }
+
+            if (!flag)
+            {
+                foreach (var ps in FindObjectsOfType<ParticleSystem>())
+                {
+                    ps.Play(false);
+                }
+            }
+        }
+
+        public void UIParticle_MeshSharing(bool flag)
+        {
+            foreach (var uip in m_RootCanvas.GetComponentsInChildren<UIParticle>(true))
+            {
+                uip.meshSharing = flag
+                    ? UIParticle.MeshSharing.Auto
+                    : UIParticle.MeshSharing.None;
+            }
+        }
+
+        public void UIParticle_RandomGroup(bool flag)
+        {
+            foreach (var uip in m_RootCanvas.GetComponentsInChildren<UIParticle>(true))
+            {
+                uip.groupMaxId = flag
+                    ? 4
+                    : 0;
+            }
+        }
+
+        public void ParticleSystem_SetScale(float scale)
+        {
+            foreach (var ps in FindObjectsOfType<ParticleSystem>())
+            {
+                ps.transform.localScale = new Vector3(scale, scale, scale);
+            }
+        }
+    }
+}

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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Tests/Editor/Coffee.UIParticle.Editor.Tests.asmdef

@@ -0,0 +1,19 @@
+{
+    "name": "Coffee.UIParticle.Editor.Tests",
+    "references": [
+        "Coffee.UIParticle",
+        "Coffee.UIParticle.Editor"
+    ],
+    "optionalUnityReferences": [
+        "TestAssemblies"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": false,
+    "defineConstraints": []
+}

Assets/Tests/Editor/Coffee.UIParticle.Editor.Tests.asmdef.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 78daa55fa55814a33a3377d6ede8c43d
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Tests/Editor/NewTestScript.cs

@@ -0,0 +1,26 @@
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine.TestTools;
+
+namespace Coffee.UIParticle.Editor.Tests
+{
+    public class NewTestScript
+    {
+        // A Test behaves as an ordinary method
+        [Test]
+        public void NewTestScriptSimplePasses()
+        {
+            // Use the Assert class to test conditions
+        }
+
+        // A UnityTest behaves like a coroutine in Play Mode. In Edit Mode you can use
+        // `yield return null;` to skip a frame.
+        [UnityTest]
+        public IEnumerator NewTestScriptWithEnumeratorPasses()
+        {
+            // Use the Assert class to test conditions.
+            // Use yield to skip a frame.
+            yield return null;
+        }
+    }
+}

Assets/Tests/Editor/NewTestScript.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 999f0ea10cb5f48ed89190a0ca83dd53
+guid: 5623180b85e024006b9a6772c3f241c5
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Assets/Tests/NewTestScript.cs

@@ -0,0 +1,26 @@
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine.TestTools;
+
+namespace Coffee.UIParticle.Tests
+{
+    public class NewTestScript
+    {
+        // A Test behaves as an ordinary method
+        [Test]
+        public void NewTestScriptSimplePasses()
+        {
+            // Use the Assert class to test conditions
+        }
+
+        // A UnityTest behaves like a coroutine in Play Mode. In Edit Mode you can use
+        // `yield return null;` to skip a frame.
+        [UnityTest]
+        public IEnumerator NewTestScriptWithEnumeratorPasses()
+        {
+            // Use the Assert class to test conditions.
+            // Use yield to skip a frame.
+            yield return null;
+        }
+    }
+}

Assets/Tests/NewTestScript.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 0328b9fb8360e4f8e8a842f87d330466
+guid: d52f7d64d782c421284267dd1c197210
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

CONTRIBUTING.md

@@ -1,30 +0,0 @@
-# Contributing
-
-## How to Contribute
-
-#### Code of Conduct
-
-This repository has adopted the Contributor Covenant as it's
-Code of Conduct. It is expected that participants adhere to it.
-
-#### Proposing a Change
-
-If you are unsure about whether or not a change is desired,
-you can create an issue. This is useful because it creates
-the possibility for a discussion that's visible to everyone.
-
-When fixing a bug it is fine to submit a pull request right away.
-
-#### Sending a Pull Request
-
-Steps to be performed to submit a pull request:
-
-1. Fork the repository and create your branch from `develop`.
-2. If you have fixed a bug or added code that should be tested, add tests.
-3. Click `Window > Generals > Test Runner` to test
-4. Commit with a massage based on [Angular Commit Message Conventions](https://gist.github.com/stephenparish/9941e89d80e2bc58a153).
-5. Fill out the description, link any related issues and submit your pull request.
-
-#### License
-
-By contributing to this repository, you agree that your contributions will be licensed under its MIT license.

Packages/manifest.json

@@ -0,0 +1,8 @@
+{
+  "dependencies": {
+    "com.unity.ide.rider": "3.0.27",
+    "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

@@ -0,0 +1,85 @@
+{
+  "dependencies": {
+    "com.coffee.ui-particle": {
+      "version": "file:src",
+      "depth": 0,
+      "source": "embedded",
+      "dependencies": {
+        "com.unity.ugui": "1.0.0",
+        "com.unity.modules.particlesystem": "1.0.0"
+      }
+    },
+    "com.unity.ext.nunit": {
+      "version": "1.0.6",
+      "depth": 1,
+      "source": "registry",
+      "dependencies": {},
+      "url": "https://packages.unity.com"
+    },
+    "com.unity.ide.rider": {
+      "version": "3.0.27",
+      "depth": 0,
+      "source": "registry",
+      "dependencies": {
+        "com.unity.ext.nunit": "1.0.6"
+      },
+      "url": "https://packages.unity.com"
+    },
+    "com.unity.test-framework": {
+      "version": "1.1.33",
+      "depth": 0,
+      "source": "registry",
+      "dependencies": {
+        "com.unity.ext.nunit": "1.0.6",
+        "com.unity.modules.imgui": "1.0.0",
+        "com.unity.modules.jsonserialize": "1.0.0"
+      },
+      "url": "https://packages.unity.com"
+    },
+    "com.unity.ugui": {
+      "version": "1.0.0",
+      "depth": 1,
+      "source": "builtin",
+      "dependencies": {
+        "com.unity.modules.ui": "1.0.0",
+        "com.unity.modules.imgui": "1.0.0"
+      }
+    },
+    "com.unity.modules.animation": {
+      "version": "1.0.0",
+      "depth": 0,
+      "source": "builtin",
+      "dependencies": {}
+    },
+    "com.unity.modules.imgui": {
+      "version": "1.0.0",
+      "depth": 1,
+      "source": "builtin",
+      "dependencies": {}
+    },
+    "com.unity.modules.jsonserialize": {
+      "version": "1.0.0",
+      "depth": 1,
+      "source": "builtin",
+      "dependencies": {}
+    },
+    "com.unity.modules.particlesystem": {
+      "version": "1.0.0",
+      "depth": 1,
+      "source": "builtin",
+      "dependencies": {}
+    },
+    "com.unity.modules.physics": {
+      "version": "1.0.0",
+      "depth": 0,
+      "source": "builtin",
+      "dependencies": {}
+    },
+    "com.unity.modules.ui": {
+      "version": "1.0.0",
+      "depth": 2,
+      "source": "builtin",
+      "dependencies": {}
+    }
+  }
+}

Packages/src/.github/ISSUE_TEMPLATE/bug_report.md

@@ -26,9 +26,9 @@ A clear and concise description of what you expected to happen.
 If applicable, add screenshots to help explain your problem.
 
 **Environment (please complete the following information):**
- - Version [e.g. 1.0.0]
+ - Version [e.g. 4.0.0]
  - Platform: [e.g. Editor(Windows/Mac), Standalone(Windows/Mac), iOS, Android, WebGL]
- - Unity version: [e.g. 2018.2.8f1]
+ - Unity version: [e.g. 2022.3.0f1]
  - Build options: [e.g. IL2CPP, .Net 4.x, LWRP]
 
 **Additional context**

Packages/src/.github/pull_request_template.md

@@ -0,0 +1,9 @@
+---
+name: Pull Request
+about: Create a pull request
+title: ''
+assignees: mob-sakai
+
+---
+
+**NOTE: Create a pull request to merge into `develop` branch**

Packages/src/.releaserc.json

@@ -1,14 +1,12 @@
 {
   "branches": [
-    "+([0-9])?(.{+([0-9]),x}).x",
-    "master",
-    "main",
+    "release",
+    "release-4.x",
     {
-      "name": "preview",
+      "name": "release-preview",
       "prerelease": true
     }
   ],
-  "tagFormat": "${version}",
   "plugins": [
     "@semantic-release/commit-analyzer",
     "@semantic-release/release-notes-generator",

Packages/src/CHANGELOG.md

@@ -1,3 +1,351 @@
+# [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)
+
+
+### Bug Fixes
+
+* fix release workflow ([30b0076](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/30b00762f6da166c043587798b1552f27b4cc604))
+
+## [4.6.5](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.4...v4.6.5) (2024-05-23)
+
+
+### Bug Fixes
+
+* update workflows (for preview and v4) ([3eab097](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3eab0979b9b85919b804442ab05735b7120eade5))
+
+## [4.6.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.3...v4.6.4) (2024-05-22)
+
+
+### Bug Fixes
+
+* assertion failed on expression: 'ps->array_size()' ([1b5c359](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1b5c359058289895caf5f245fe09abb643bc38eb)), closes [#278](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/278)
+* lost Material.mainTexture when using AnimatableProperties ([ea04352](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ea043524c0b00f67cba26a1f9ea537ee4a56d6ff)), closes [#311](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/311)
+* remove unnecessary code ([c37c014](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c37c01486499773e3d7e8296c95bb4c3fae94abb))
+
+## [4.6.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.2...v4.6.3) (2024-04-04)
+
+
+### Bug Fixes
+
+* if only Trail Material is used, it will not be displayed ([2eff411](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2eff411bd97eb4e6947d29a02b85b414bfdaee3a)), closes [#294](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/294)
+* if the UIParticle parents do not have Canvas, an exception is thrown in OnEnable ([e82c833](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e82c833d04b819f103984931ba29a3616ef50908)), closes [#300](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/300)
+* particle size too small due to auto scaling ([2ec3748](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2ec374833614d64406e7c3207ca5fe234a749dcb)), closes [#295](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/295)
+
+## [4.6.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.1...v4.6.2) (2024-02-01)
+
+
+### Bug Fixes
+
+* fix compile error in Unity 2021.1 or older ([fcae60b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fcae60bf29079bac07463bd3a86f8644151d72ba))
+* fix demos ([ad20d12](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ad20d128a2ad033d9f30b98f0a0dab6091f5aa19))
+* fix warning ([7fd4a8e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/7fd4a8e343ce587dffa9db5ff186061b3ebb38a6))
+
+## [4.6.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.6.0...v4.6.1) (2024-01-26)
+
+
+### Bug Fixes
+
+* unintended scaling occurs when `AutoScalingMode=UIParticle` and `ScalingMode=Local` ([1627de1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1627de10eb1e742a015603ae9939071665a5bd89)), closes [#292](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/292)
+
+# [4.6.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.5.2...v4.6.0) (2024-01-26)
+
+
+### Bug Fixes
+
+* fix abnormal mesh bounds error ([772bf50](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/772bf50d168982bd401c30e58172e0a60fbafe46)), closes [#213](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/213)
+* fix warning ([93d3919](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/93d3919b6fb6ac186b3e99f8baaef9a044f583f2))
+* fix warning ([8a78ec1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/8a78ec13ad2aad9138a22b67c332871e064a38cc))
+
+
+### Features
+
+* "[generated]" GameObjects on the hierarchy is disturbing ([7c42421](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/7c4242150b591daf64390588afa27efa27368af3)), closes [#288](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/288)
+* add explicit dependencies ([9a0187a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9a0187a72a35d378ff7be965bfcb7475f423fe0f))
+* add icon ([0c1022c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0c1022c6224394713f62b41e5e4ef0c289610ae1))
+* remove samples ([f53a7fa](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f53a7faed3ee73ac22d745a778284e818624b510))
+
+# [4.6.0-preview.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.5.2...v4.6.0-preview.1) (2024-01-24)
+
+
+### Bug Fixes
+
+* fix abnormal mesh bounds error ([772bf50](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/772bf50d168982bd401c30e58172e0a60fbafe46)), closes [#213](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/213)
+* fix warning ([93d3919](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/93d3919b6fb6ac186b3e99f8baaef9a044f583f2))
+* fix warning ([8a78ec1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/8a78ec13ad2aad9138a22b67c332871e064a38cc))
+
+
+### Features
+
+* "[generated]" GameObjects on the hierarchy is disturbing ([7c42421](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/7c4242150b591daf64390588afa27efa27368af3)), closes [#288](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/288)
+* add explicit dependencies ([9a0187a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9a0187a72a35d378ff7be965bfcb7475f423fe0f))
+* add icon ([0c1022c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0c1022c6224394713f62b41e5e4ef0c289610ae1))
+* remove samples ([f53a7fa](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f53a7faed3ee73ac22d745a778284e818624b510))
+
+## [4.5.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.5.1...4.5.2) (2024-01-18)
+
+
+### Bug Fixes
+
+* (editor) sometimes crashes when entering play mode ([b80c3e6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b80c3e6c9fdd2a8fb72ff233edb85df2e3dbba3d))
+
+## [4.5.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.5.0...4.5.1) (2023-12-23)
+
+
+### Bug Fixes
+
+* fix material for mesh sharing group ([6126af9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/6126af9f376dd4c100a1b9d19d9499bdef7d5566))
+* the changes made to the material used by the ParticleSystem are not immediately reflected ([3184ba9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3184ba94ae08264223c0c71443ad70acc1a1ccb2)), closes [#280](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/280)
+
+# [4.5.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.4.0...4.5.0) (2023-12-23)
+
+
+### Bug Fixes
+
+* incorrect rendering of world-space simulated particles while animating scale ([ac58475](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ac584755393d87bda2e80d9653370b7e4c68912f)), closes [#285](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/285)
+* remove obsolete warning ([5d5eb34](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5d5eb34590b7cefb0e4ac26c0441e104176ce522))
+
+
+### Features
+
+* Automatically generated objects are no longer editable (NotEditable). ([5607dc4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5607dc4eed0c086b4651941953df6c7d535712e0))
+* support IMeshModifier ([5c3232f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/5c3232faf3d2cfad1e3e1a9349b8346c7982a608)), closes [#282](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/282)
+
+# [4.4.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.3.0...4.4.0) (2023-11-08)
+
+
+### Features
+
+* support 'Active Apply Color Space' for linear color space ([45c56bb](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/45c56bbd850202365751ea019baf5131b2eb9fbe))
+
+# [4.3.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.2.2...4.3.0) (2023-11-08)
+
+
+### Features
+
+* added 'autoScalingMode (None, Transform.localScale, UIParticle.scale)' instead of 'autoScaling' ([107f901](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/107f901fe3232223322681edc4bf908642474298))
+* reset transform.localScale on upgrading v3.x to v4.x ([c710787](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c710787b5ba496cf73e7eb43458bb3958139baa9)), closes [#277](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/277)
+
+## [4.2.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.2.1...4.2.2) (2023-10-25)
+
+
+### Bug Fixes
+
+* il2cpp code stripping bug ([73f6dad](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/73f6dad0f33641a76ddd05ffc6812ced3f8a276d)), closes [#269](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/269)
+
+## [4.2.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.2.0...4.2.1) (2023-08-18)
+
+
+### Bug Fixes
+
+* autoScaling and PositionMode may be locked ([3f2f12d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/3f2f12d2cf7541118c02830ec9fdea8183357487))
+
+# [4.2.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.7...4.2.0) (2023-08-18)
+
+
+### Bug Fixes
+
+* assertion 'ps->array_size()' in UpdateMesh() when using trails of type ribbon ([f75fcce](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f75fcce0dae0bc166bd01d36a150aded1fd721f3)), closes [#241](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/241)
+* built-in shaders are no longer supported ([c2119c1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c2119c171a1262431eac7fea6bf3125db2bcaaca)), closes [#233](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/233) [#257](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/257)
+* crash occurs when too many vertices are rendered ([723a04d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/723a04d0cfd156715a3c92b6d6bd75fdc1862c28))
+* error: SerializedObject target has been destroyed ([e930516](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e93051603e121732c92bcd89ded48087c2b0d7fb)), closes [#267](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/267)
+* excessive particle emitted on move ParticleSystem for local space simulation and emission over distance ([2fe0bde](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/2fe0bde422f9769dfedaf6b053ea07f773646679)), closes [#265](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/265)
+* fix typos ([52f2ef1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/52f2ef1f2471a2e1c29fca96255c04b222d9c848))
+* generated GameObject will be named '[generated] *' ([9b2e5c1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9b2e5c1d1024e091de6d18a4578cd18b43563e48))
+* inactive ParticleSystems are removed from the list on refresh ([4851a18](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/4851a1880eef9f385dd9db644ea7e544f95da4fc))
+* mesh sharing not working ([8b4ca1a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/8b4ca1add5c409601e840253e1c0dbcdbf536da8)), closes [#236](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/236)
+* nullptr exceptions when using nested UIParticle components in hierarchy ([e67e948](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e67e9482e2cb840b16e2cfe76e04f7423fcbd3a3)), closes [#246](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/246)
+* nullReferenceException after copy-n-paste ([425aad0](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/425aad0cbab475635c72bee84ecbf3f2acedccc2)), closes [#258](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/258)
+* remove unnecessary per-frame allocation. ([e92b514](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e92b514624cc362e53ddeae5ade20fa732f94c7c))
+* scaling ParticleSystem puts prewarmed particles in wrong location ([fb31db4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fb31db47f2debb3aadbdc4d1b88d0efd9c4ad7bd)), closes [#235](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/235)
+* sub-emitters option is not work in editor playing ([b308b26](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b308b2683372662bb834b6f6d23ea3435a68d1b3)), closes [#231](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/231)
+* the camera under UIParticle will be assigned as _orthoCamera ([c42f8c8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c42f8c8ab0ff033689349a81e02a4808e071a8a2))
+* UIParticleAttractor attracts the particles at wrong position when in RelativeMode ([68d9925](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/68d9925a16237df3c7b07b4781172cbd03425421)), closes [#262](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/262)
+
+
+### Features
+
+* 'AbsoluteMode' option is renamed to 'PositionMode' ([67eff61](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/67eff610736344ba0122163ff5ee63b25c43f555))
+* 'AutoScaling' option will be imported from 'IgnoreCanvasScale' (for v3.x) ([4103041](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/410304125f3f25f3f543c7bc01dcc661eab00609))
+* add 'AutoScaling' option for UIParticle ([35325c8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/35325c88996fa6aea19a6dd1395c05884e1f84ae))
+* add 'UpdateMode' option for UIParticleAttractor ([903f702](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/903f702d7be38228841a5a693e3afdceb4a59d9f)), closes [#250](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/250)
+* add particle system getter and setter for attractor ([a4bcf93](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a4bcf93022d2729f3d2a74a2cac4f52e68641b18)), closes [#253](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/253)
+* add public properties for UIParticleAttractor ([392ab6d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/392ab6dd76c36e815320d3a50744d19faa631260)), closes [#253](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/253)
+* add Start/StopEmission API for UIParticle ([e499836](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e4998365c9825fa385e0a317768ce073a1f15b48)), closes [#240](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/240)
+
+## [4.1.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.6...4.1.7) (2022-08-30)
+
+
+### Bug Fixes
+
+* the annoying empty black scene overlay box shown even when nothing is selected ([bdeeabb](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/bdeeabbbe140b0ba80fac7ac477874c2467d3a16))
+
+## [4.1.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.5...4.1.6) (2022-08-10)
+
+
+### Bug Fixes
+
+* fix abnormal mesh bounds error ([f60d6df](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f60d6dfe6030ac89527a4265e414e9a0a20d56db)), closes [#213](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/213) [#218](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/218)
+
+## [4.1.5](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.4...4.1.5) (2022-08-10)
+
+
+### Bug Fixes
+
+* fix culling for RectMask2D ([9e2dbe7](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9e2dbe7758eb28a4f6a7c11113d9169847880f96)), closes [#220](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/220)
+
+## [4.1.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.3...4.1.4) (2022-07-01)
+
+
+### Bug Fixes
+
+* add `Enabled` toggle in overlay window ([f97e619](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/f97e6195e62b5acfa8f3e97bfe3bc4a7dcadf38a))
+* if `m_Particles` contains null, an error will occur ([550d0c4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/550d0c43be35cd07e390ffd5749557c89fee0332)), closes [#214](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/214)
+* ParticleSystem reordering and refreshing in inspector does not work for prefab asset ([7eb4112](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/7eb41124db06ea794db76788b35ce82a0af2c402))
+* refresh button does not works in prefab edit mode ([c1538a8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c1538a83998608a30dc90944b05f8b75e165cf05)), closes [#214](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/214)
+* when `UIParticlrRenderer` destroy manually, an error will occur ([a11d2d0](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a11d2d01ce5f67e3f430bcb0bfdee1ad9abf7cfe))
+
+## [4.1.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.2...4.1.3) (2022-06-28)
+
+
+### Bug Fixes
+
+* error on drag prefab to scene ([fa2f867](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fa2f867bcaff437bb9420da1abcef970cdb09ade)), closes [#211](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/211)
+
+## [4.1.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.1...4.1.2) (2022-06-27)
+
+
+### Bug Fixes
+
+* error on editor ([8034228](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/80342287137c07d58a7492875a401d80cb134073)), closes [#210](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/210)
+* incorrect position of world space trail particles ([fb7f308](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fb7f308f092db8a1512383857b80110cd626ecf9)), closes [#209](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/209)
+
+## [4.1.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.0...4.1.1) (2022-06-25)
+
+
+### Bug Fixes
+
+* add absolute mode toggle to overlay window ([48d1994](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/48d1994f5f8751b707b6ef7695b552df731bece9))
+
+# [4.1.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.0.1...4.1.0) (2022-06-25)
+
+
+### Features
+
+* add relative/absolute particle position mode ([1879ac8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1879ac8c538778e386e68cfc989a6f4f974043ca)), closes [#205](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/205)
+
+## [4.0.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.0.0...4.0.1) (2022-06-24)
+
+
+### Bug Fixes
+
+* overlays do not exist in Unity 2019.2-2021.1 ([cd8e037](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/cd8e0372b63bb6feaaf053518013a641bc7e65ac)), closes [#207](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/207) [#208](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/208)
+
+# [4.0.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.12...4.0.0) (2022-06-21)
+
+
+### Bug Fixes
+
+* correct world space particle position when changing screen size ([c6644a2](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c6644a213263375c7a35b5082ef4b71cc58964e6))
+* keep properly canvas batches ([d8e96e6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/d8e96e69a62dff7a451eaed32c7a814e7e62dbb9))
+
+
+### Features
+
+* adaptive scaling for UI ([aa0d56f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/aa0d56f9faa05e9679d4b476bcf135eafb1b8af9))
+* add overlay window for UIParticle ([7b21c50](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/7b21c500ef78103b605fdca71051d2357b09602f))
+* add particle attractor component ([386170c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/386170cbf68ebf59d4510fe0a45cf83925ec9ba4))
+* display warning in inspector if using 'TEXCOORD*.zw' components as custom vertex stream ([59221d5](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/59221d58217a440b77d504e6428bf99f10246260))
+* mesh sharing group ([9afeebf](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9afeebf67212cdf4d3ac9e9a3b78a7ced5c7ecfe))
+* random mesh sharing group ([4fa43ed](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/4fa43eda4bc70c9c827c4fad9d5ae1327bfbc322))
+* support 8+ materials ([b76bf5a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b76bf5a5ad378c3c4b16bcf08d21337757557101)), closes [#122](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/122) [#152](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/152) [#186](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/186)
+
+
+### BREAKING CHANGES
+
+* If you update to v4, you may be required to adjust your UIParticle.scale.
+
+# [4.0.0-preview.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.12...4.0.0-preview.1) (2022-06-18)
+
+
+### Bug Fixes
+
+* correct world space particle position when changing screen size ([c6644a2](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c6644a213263375c7a35b5082ef4b71cc58964e6))
+* keep properly canvas batches ([d8e96e6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/d8e96e69a62dff7a451eaed32c7a814e7e62dbb9))
+
+
+### Features
+
+* adaptive scaling for UI ([aa0d56f](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/aa0d56f9faa05e9679d4b476bcf135eafb1b8af9))
+* add overlay window for UIParticle ([7b21c50](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/7b21c500ef78103b605fdca71051d2357b09602f))
+* add particle attractor component ([386170c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/386170cbf68ebf59d4510fe0a45cf83925ec9ba4))
+* mesh sharing group ([9afeebf](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9afeebf67212cdf4d3ac9e9a3b78a7ced5c7ecfe))
+* random mesh sharing group ([4fa43ed](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/4fa43eda4bc70c9c827c4fad9d5ae1327bfbc322))
+* support 8+ materials ([b76bf5a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b76bf5a5ad378c3c4b16bcf08d21337757557101)), closes [#122](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/122) [#152](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/152) [#186](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/186)
+
+
+### BREAKING CHANGES
+
+* If you update to v4, you may be required to adjust your UIParticle.scale.
+
+## [3.3.12](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.11...3.3.12) (2022-06-10)
+
+
+### Bug Fixes
+
+* always display materials in inspector ([a10042d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a10042d989dea18ff010bdbe970aa434e2bdf117))
+* UNITY_UI_ALPHACLIP in UIAdditive shader is not working ([e817e8d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e817e8d3c75188f3243243855b135bd840699199))
+
+## [3.3.11](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.10...3.3.11) (2022-06-10)
+
+
+### Bug Fixes
+
+* sorting by layer does not work properly ([ccc09e6](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/ccc09e6aca2fa3d7bc887e6c733e66706e40ae0f))
+* when using linear color space, the particle colors are not output correctly ([11c3a7b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/11c3a7b37415d78e1b8ba3988a6e043c9f1861e0)), closes [#203](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/203)
+
+## [3.3.10](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.9...3.3.10) (2022-02-17)
+
+
+### Bug Fixes
+
+* annoying warning for [ExecuteInEditMode] ([b6b2c72](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b6b2c72b198566e2880a22831c937eff7e9eff28)), closes [#180](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/180)
+* PrefabStageUtility class is not experimental after 2021.2 ([0fd5d7a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0fd5d7affe707fa9e92abd6e192bf400dfb1a80a))
+
+## [3.3.9](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.8...3.3.9) (2021-08-02)
+
+
+### Bug Fixes
+
+* fix for warning CS0618 ([61760d9](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/61760d940cdd4baacaa196ac1631a0a1a40b7204))
+
 ## [3.3.8](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.7...3.3.8) (2021-06-08)
 
 

Packages/src/CODE_OF_CONDUCT.md

@@ -81,4 +81,4 @@ Community Impact Guidelines were inspired by [Mozilla's code of conduct enforcem
 [homepage]: https://www.contributor-covenant.org
 
 For answers to common questions about this code of conduct, see the FAQ at
-https://www.contributor-covenant.org/faq. Translations are available at https://www.contributor-covenant.org/translations.
+https://www.contributor-covenant.org/faq. Translations are available at https://www.contributor-covenant.org/translations.

Packages/src/CONTRIBUTING.md

@@ -0,0 +1,43 @@
+# Contributing
+
+## How to Contribute
+
+#### Code of Conduct
+
+This repository has adopted the Contributor Covenant as it's
+Code of Conduct. It is expected that participants adhere to it.
+
+#### Proposing a Change
+
+If you are unsure about whether or not a change is desired,
+you can create an issue. This is useful because it creates
+the possibility for a discussion that's visible to everyone.
+
+When fixing a bug it is fine to submit a pull request right away.
+
+#### Sending a Pull Request
+
+Steps to be performed to submit a pull request:
+
+1. Fork the repository.
+2. Clone the repository.
+3. Checkout `develop` branch.
+4. Develop the package.
+5. Test the package with the test runner (`Window > Generals > Test Runner`).
+6. Commit with a message based
+   on [Angular Commit Message Conventions](https://gist.github.com/stephenparish/9941e89d80e2bc58a153) as follows:
+
+    - `fix:` fix a bug
+    - `feat:` new feature
+    - `docs:` changes only in documentation
+    - `style:` changes only in formatting, white-space, etc
+    - `refactor:` changes only in code structure (extract method, rename variable, move method, etc)
+    - `perf:` changes only in code performance
+    - `test:` add or update tests
+    - `chore:` changes to the build process or auxiliary tools and libraries such as documentation generation
+
+7. Create a pull request on GitHub. Fill out the description, link any related issues and submit your pull request.
+
+#### License
+
+By contributing to this repository, you agree that your contributions will be licensed under its MIT license.

Packages/src/Editor/AnimatablePropertyEditor.cs

@@ -0,0 +1,143 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using UnityEditor;
+using UnityEngine;
+
+namespace Coffee.UIExtensions
+{
+    internal static class AnimatablePropertyEditor
+    {
+        private static readonly GUIContent s_ContentNothing = new GUIContent("Nothing");
+        private static readonly List<string> s_ActiveNames = new List<string>();
+        private static readonly StringBuilder s_Sb = new StringBuilder();
+        private static readonly HashSet<string> s_Names = new HashSet<string>();
+
+        private static string CollectActiveNames(SerializedProperty sp, List<string> result)
+        {
+            result.Clear();
+            for (var i = 0; i < sp.arraySize; i++)
+            {
+                var spName = sp.GetArrayElementAtIndex(i).FindPropertyRelative("m_Name");
+                if (spName == null) continue;
+
+                result.Add(spName.stringValue);
+            }
+
+            s_Sb.Length = 0;
+            if (result.Count == 0)
+            {
+                s_Sb.Append("Nothing");
+            }
+            else
+            {
+                result.Aggregate(s_Sb, (a, b) => s_Sb.AppendFormat("{0}, ", b));
+                s_Sb.Length -= 2;
+            }
+
+            return s_Sb.ToString();
+        }
+
+        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);
+                var rect = EditorGUI.PrefixLabel(pos, label);
+                var text = sp.hasMultipleDifferentValues
+                    ? "-"
+                    : CollectActiveNames(sp, s_ActiveNames);
+                isClicked = GUI.Button(rect, text, EditorStyles.popup);
+            }
+
+            if (!isClicked) return;
+
+            var gm = new GenericMenu();
+            gm.AddItem(s_ContentNothing, s_ActiveNames.Count == 0, () =>
+            {
+                sp.ClearArray();
+                sp.serializedObject.ApplyModifiedProperties();
+            });
+
+            if (!sp.hasMultipleDifferentValues)
+            {
+                for (var i = 0; i < sp.arraySize; i++)
+                {
+                    var p = sp.GetArrayElementAtIndex(i);
+                    var name = p.FindPropertyRelative("m_Name").stringValue;
+                    var type = (AnimatableProperty.ShaderPropertyType)p.FindPropertyRelative("m_Type").intValue;
+                    AddMenu(gm, sp, new ShaderProperty(name, type), false);
+                }
+            }
+
+            s_Names.Clear();
+            for (var j = 0; j < mats.Length; j++)
+            {
+                var mat = mats[j];
+                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.Contains(name)) continue;
+                    s_Names.Add(name);
+
+                    AddMenu(gm, sp, new ShaderProperty(name, type), true);
+
+                    if (type != AnimatableProperty.ShaderPropertyType.Texture) continue;
+
+                    AddMenu(gm, sp, new ShaderProperty($"{name}_ST"), true);
+                    AddMenu(gm, sp, new ShaderProperty($"{name}_HDR"), true);
+                    AddMenu(gm, sp, new ShaderProperty($"{name}_TexelSize"), true);
+                }
+            }
+
+            gm.ShowAsContext();
+        }
+
+        private static void AddMenu(GenericMenu menu, SerializedProperty sp, ShaderProperty prop, bool add)
+        {
+            if (add && s_ActiveNames.Contains(prop.name)) return;
+
+            var label = new GUIContent($"{prop.name} ({prop.type})");
+            menu.AddItem(label, s_ActiveNames.Contains(prop.name), () =>
+            {
+                var index = s_ActiveNames.IndexOf(prop.name);
+                if (0 <= index)
+                {
+                    sp.DeleteArrayElementAtIndex(index);
+                }
+                else
+                {
+                    sp.InsertArrayElementAtIndex(sp.arraySize);
+                    var p = sp.GetArrayElementAtIndex(sp.arraySize - 1);
+                    p.FindPropertyRelative("m_Name").stringValue = prop.name;
+                    p.FindPropertyRelative("m_Type").intValue = (int)prop.type;
+                }
+
+                sp.serializedObject.ApplyModifiedProperties();
+            });
+        }
+
+        private struct ShaderProperty
+        {
+            public readonly string name;
+            public readonly AnimatableProperty.ShaderPropertyType type;
+
+            public ShaderProperty(string name)
+            {
+                this.name = name;
+                type = AnimatableProperty.ShaderPropertyType.Vector;
+            }
+
+            public ShaderProperty(string name, AnimatableProperty.ShaderPropertyType type)
+            {
+                this.name = name;
+                this.type = type;
+            }
+        }
+    }
+}

Packages/src/Editor/UIParticleEditor.cs

@@ -0,0 +1,586 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using UnityEditor;
+using UnityEditor.UI;
+using UnityEditorInternal;
+using UnityEngine;
+using UnityEngine.UI;
+using Coffee.UIParticleExtensions;
+#if UNITY_2021_2_OR_NEWER
+using UnityEditor.Overlays;
+#else
+using System;
+using System.Reflection;
+using Object = UnityEngine.Object;
+#endif
+#if UNITY_2021_2_OR_NEWER
+using UnityEditor.SceneManagement;
+#elif UNITY_2018_3_OR_NEWER
+using UnityEditor.Experimental.SceneManagement;
+#endif
+
+namespace Coffee.UIExtensions
+{
+    [CustomEditor(typeof(UIParticle))]
+    [CanEditMultipleObjects]
+    internal class UIParticleEditor : GraphicEditor
+    {
+#if UNITY_2021_2_OR_NEWER
+#if UNITY_2022_1_OR_NEWER
+        [Overlay(typeof(SceneView), "Scene View/UI Particles", "UI Particles", true,
+            defaultDockPosition = DockPosition.Bottom,
+            defaultDockZone = DockZone.Floating,
+            defaultLayout = Layout.Panel)]
+#else
+        [Overlay(typeof(SceneView), "Scene View/UI Particles", "UI Particles", true)]
+#endif
+        private class UIParticleOverlay : IMGUIOverlay, ITransientOverlay
+        {
+            public bool visible => s_SerializedObject != null;
+
+            public override void OnGUI()
+            {
+                if (visible)
+                {
+                    WindowFunction();
+                }
+            }
+        }
+#endif
+
+        //################################
+        // Constant or Static Members.
+        //################################
+        private static readonly GUIContent s_ContentRenderingOrder = new GUIContent("Rendering Order");
+        private static readonly GUIContent s_ContentRefresh = new GUIContent("Refresh");
+        private static readonly GUIContent s_ContentFix = new GUIContent("Fix");
+        private static readonly GUIContent s_ContentMaterial = new GUIContent("Material");
+        private static readonly GUIContent s_ContentTrailMaterial = new GUIContent("Trail Material");
+        private static readonly GUIContent s_Content3D = new GUIContent("3D");
+        private static readonly GUIContent s_ContentRandom = new GUIContent("Random");
+        private static readonly GUIContent s_ContentScale = new GUIContent("Scale");
+        private static SerializedObject s_SerializedObject;
+        private static bool s_XYZMode;
+
+        private SerializedProperty _maskable;
+        private SerializedProperty _scale3D;
+        private SerializedProperty _animatableProperties;
+        private SerializedProperty _meshSharing;
+        private SerializedProperty _groupId;
+        private SerializedProperty _groupMaxId;
+        private SerializedProperty _positionMode;
+        private SerializedProperty _autoScalingMode;
+        private ReorderableList _ro;
+        private bool _showMax;
+
+        private static readonly HashSet<Shader> s_Shaders = new HashSet<Shader>();
+#if UNITY_2018 || UNITY_2019
+        private static readonly List<ParticleSystemVertexStream> s_Streams = new List<ParticleSystemVertexStream>();
+#endif
+        private static readonly List<string> s_MaskablePropertyNames = new List<string>
+        {
+            "_Stencil",
+            "_StencilComp",
+            "_StencilOp",
+            "_StencilWriteMask",
+            "_StencilReadMask",
+            "_ColorMask"
+        };
+
+        [InitializeOnLoadMethod]
+        private static void Init()
+        {
+#if !UNITY_2021_2_OR_NEWER
+            var miSceneViewOverlayWindow = Type.GetType("UnityEditor.SceneViewOverlay, UnityEditor")
+                ?.GetMethods(BindingFlags.Public | BindingFlags.Static)
+                .First(x => x.Name == "Window" && 5 <= x.GetParameters().Length);
+            var windowFunction = (Action<Object, SceneView>)WindowFunction;
+            var windowFunctionType = Type.GetType("UnityEditor.SceneViewOverlay+WindowFunction, UnityEditor");
+            var windowFunctionDelegate = Delegate.CreateDelegate(windowFunctionType, windowFunction.Method);
+            var windowTitle = new GUIContent(ObjectNames.NicifyVariableName(nameof(UIParticle)));
+#if UNITY_2019_2_OR_NEWER
+            //public static void Window(GUIContent title, WindowFunction sceneViewFunc, int order, Object target, WindowDisplayOption option, EditorWindow window = null)
+            var sceneViewArgs = new object[] { windowTitle, windowFunctionDelegate, 599, null, 2, null };
+#else
+            //public static void Window(GUIContent title, WindowFunction sceneViewFunc, int order, Object target, WindowDisplayOption option)
+            var sceneViewArgs = new object[] { windowTitle, windowFunctionDelegate, 599, null, 2 };
+#endif
+
+#if UNITY_2019_1_OR_NEWER
+            SceneView.duringSceneGui += _ =>
+#else
+            SceneView.onSceneGUIDelegate += _ =>
+#endif
+            {
+                if (s_SerializedObject != null)
+                {
+                    miSceneViewOverlayWindow.Invoke(null, sceneViewArgs);
+                }
+            };
+#endif
+
+            SerializedObject CreateSerializeObject()
+            {
+                var uiParticles = Selection.gameObjects.Select(x => x.GetComponent<ParticleSystem>())
+                    .Where(x => x)
+                    .Select(x => x.GetComponentInParent<UIParticle>(true))
+                    .Where(x => x && x.canvas)
+                    .Concat(Selection.gameObjects.Select(x => x.GetComponent<UIParticle>())
+                        .Where(x => x && x.canvas))
+                    .Distinct()
+                    .OfType<Object>()
+                    .ToArray();
+                return 0 < uiParticles.Length ? new SerializedObject(uiParticles) : null;
+            }
+
+            s_SerializedObject = CreateSerializeObject();
+            Selection.selectionChanged += () => s_SerializedObject = CreateSerializeObject();
+        }
+
+        //################################
+        // Public/Protected Members.
+        //################################
+        /// <summary>
+        /// This function is called when the object becomes enabled and active.
+        /// </summary>
+        protected override void OnEnable()
+        {
+            base.OnEnable();
+
+            _maskable = serializedObject.FindProperty("m_Maskable");
+            _scale3D = serializedObject.FindProperty("m_Scale3D");
+            _animatableProperties = serializedObject.FindProperty("m_AnimatableProperties");
+            _meshSharing = serializedObject.FindProperty("m_MeshSharing");
+            _groupId = serializedObject.FindProperty("m_GroupId");
+            _groupMaxId = serializedObject.FindProperty("m_GroupMaxId");
+            _positionMode = serializedObject.FindProperty("m_PositionMode");
+            _autoScalingMode = serializedObject.FindProperty("m_AutoScalingMode");
+
+            var sp = serializedObject.FindProperty("m_Particles");
+            _ro = new ReorderableList(sp.serializedObject, sp, true, true, true, true)
+            {
+                elementHeight = EditorGUIUtility.singleLineHeight * 3 + 4,
+                elementHeightCallback = _ => 3 * (EditorGUIUtility.singleLineHeight + 2),
+                drawElementCallback = (rect, index, _, __) =>
+                {
+                    EditorGUI.BeginDisabledGroup(sp.hasMultipleDifferentValues);
+                    rect.y += 1;
+                    rect.height = EditorGUIUtility.singleLineHeight;
+                    var p = sp.GetArrayElementAtIndex(index);
+                    EditorGUI.ObjectField(rect, p, GUIContent.none);
+                    rect.x += 15;
+                    rect.width -= 15;
+                    var ps = p.objectReferenceValue as ParticleSystem;
+                    var materials = ps
+                        ? new SerializedObject(ps.GetComponent<ParticleSystemRenderer>()).FindProperty("m_Materials")
+                        : null;
+                    rect.y += rect.height + 1;
+                    MaterialField(rect, s_ContentMaterial, materials, 0);
+                    rect.y += rect.height + 1;
+                    MaterialField(rect, s_ContentTrailMaterial, materials, 1);
+                    EditorGUI.EndDisabledGroup();
+                    if (materials != null && materials.serializedObject.hasModifiedProperties)
+                    {
+                        materials.serializedObject.ApplyModifiedProperties();
+                    }
+                },
+                drawHeaderCallback = rect =>
+                {
+#if !UNITY_2019_3_OR_NEWER
+                    rect.y -= 1;
+#endif
+                    var pos = new Rect(rect.x, rect.y, 150, rect.height);
+                    EditorGUI.LabelField(pos, s_ContentRenderingOrder);
+
+                    pos = new Rect(rect.width - 35, rect.y, 60, rect.height);
+                    if (GUI.Button(pos, s_ContentRefresh, EditorStyles.miniButton))
+                    {
+                        foreach (var uip in targets.OfType<UIParticle>())
+                        {
+                            uip.RefreshParticles();
+                            EditorUtility.SetDirty(uip);
+                        }
+                    }
+                }
+            };
+
+            // On select UIParticle, refresh particles.
+            if (!Application.isPlaying)
+            {
+                foreach (var uip in targets.OfType<UIParticle>())
+                {
+                    if (PrefabUtility.GetPrefabAssetType(uip) != PrefabAssetType.NotAPrefab) continue;
+                    uip.RefreshParticles(uip.particles);
+                }
+            }
+        }
+
+        private static void MaterialField(Rect rect, GUIContent label, SerializedProperty sp, int index)
+        {
+            if (sp == null || sp.arraySize <= index)
+            {
+                EditorGUI.BeginDisabledGroup(true);
+                EditorGUI.ObjectField(rect, label, null, typeof(Material), true);
+                EditorGUI.EndDisabledGroup();
+            }
+            else
+            {
+                EditorGUI.PropertyField(rect, sp.GetArrayElementAtIndex(index), label);
+            }
+        }
+
+        /// <summary>
+        /// Implement this function to make a custom inspector.
+        /// </summary>
+        public override void OnInspectorGUI()
+        {
+            var current = target as UIParticle;
+            if (!current) return;
+
+            serializedObject.Update();
+
+            // Maskable
+            EditorGUILayout.PropertyField(_maskable);
+
+            // Scale
+            EditorGUI.BeginDisabledGroup(!_meshSharing.hasMultipleDifferentValues && _meshSharing.intValue == 4);
+            s_XYZMode = DrawFloatOrVector3Field(_scale3D, s_XYZMode);
+            EditorGUI.EndDisabledGroup();
+
+            // AnimatableProperties
+            var mats = current.particles
+                .Where(x => x)
+                .Select(x => x.GetComponent<ParticleSystemRenderer>().sharedMaterial)
+                .Where(x => x)
+                .ToArray();
+
+            AnimatablePropertyEditor.Draw(_animatableProperties, mats);
+
+            // Mesh sharing
+            EditorGUI.BeginChangeCheck();
+            _showMax = DrawMeshSharing(_meshSharing, _groupId, _groupMaxId, _showMax);
+            if (EditorGUI.EndChangeCheck())
+            {
+                serializedObject.ApplyModifiedProperties();
+                foreach (var uip in targets.OfType<UIParticle>())
+                {
+                    uip.ResetGroupId();
+                }
+            }
+
+            // Position Mode
+            EditorGUILayout.PropertyField(_positionMode);
+
+            // Auto Scaling
+            DrawAutoScaling(_autoScalingMode, targets.OfType<UIParticle>());
+
+            // Target ParticleSystems.
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.BeginDisabledGroup(targets.OfType<UIParticle>().Any(x => !x.canvas));
+            _ro.DoLayoutList();
+            EditorGUI.EndDisabledGroup();
+            serializedObject.ApplyModifiedProperties();
+            if (EditorGUI.EndChangeCheck())
+            {
+                foreach (var uip in targets.OfType<UIParticle>())
+                {
+                    uip.RefreshParticles(uip.particles);
+                }
+            }
+
+            // Non-UI built-in shader is not supported.
+            foreach (var mat in current.materials)
+            {
+                if (!mat || !mat.shader) continue;
+                var shader = mat.shader;
+                if (IsBuiltInObject(shader) && !shader.name.StartsWith("UI/"))
+                {
+                    EditorGUILayout.HelpBox(
+                        $"Built-in shader '{shader.name}' in '{mat.name}' is not supported.\n" +
+                        "Use UI shaders instead.",
+                        MessageType.Error);
+                }
+            }
+
+            // Does the shader support UI masks?
+            if (current.maskable && current.GetComponentInParent<Mask>(false))
+            {
+                foreach (var mat in current.materials)
+                {
+                    if (!mat || !mat.shader) continue;
+                    var shader = mat.shader;
+                    if (s_Shaders.Contains(shader)) continue;
+                    s_Shaders.Add(shader);
+                    foreach (var propName in s_MaskablePropertyNames)
+                    {
+                        if (mat.HasProperty(propName)) continue;
+
+                        EditorGUILayout.HelpBox(
+                            $"Shader '{shader.name}' doesn't have '{propName}' property." +
+                            "\nThis graphic cannot be masked.",
+                            MessageType.Warning);
+                        break;
+                    }
+                }
+            }
+
+            s_Shaders.Clear();
+
+            // UIParticle for trail should be removed.
+            var label = "This UIParticle component should be removed. The UIParticle for trails is no longer needed.";
+#pragma warning disable CS0612
+            if (FixButton(current.m_IsTrail, label))
+#pragma warning restore CS0612
+            {
+                DestroyUIParticle(current);
+            }
+
+#if UNITY_2018 || UNITY_2019
+            // (2018, 2019) Check to use 'TEXCOORD*.zw' components as custom vertex stream.
+            var allPsRenderers = targets.OfType<UIParticle>()
+                .SelectMany(x => x.particles)
+                .Where(x => x)
+                .Select(x => x.GetComponent<ParticleSystemRenderer>())
+                .ToArray();
+            if (0 < allPsRenderers.Length)
+            {
+                // Check to use 'TEXCOORD*.zw' components as custom vertex stream.
+                foreach (var psr in allPsRenderers)
+                {
+                    if (!new SerializedObject(psr).FindProperty("m_UseCustomVertexStreams").boolValue) continue;
+                    if (psr.activeVertexStreamsCount == 0) continue;
+                    psr.GetActiveVertexStreams(s_Streams);
+
+                    if (2 < s_Streams.Select(GetUsedComponentCount).Sum())
+                    {
+                        EditorGUILayout.HelpBox(
+                            $"ParticleSystem '{psr.name}' uses 'TEXCOORD*.zw' components as custom vertex stream.\n" +
+                            "UIParticle does not support it (See README.md).",
+                            MessageType.Warning);
+                    }
+
+                    s_Streams.Clear();
+                }
+            }
+#endif
+        }
+
+        private bool IsBuiltInObject(Object obj)
+        {
+            return AssetDatabase.TryGetGUIDAndLocalFileIdentifier(obj, out var guid, out long _)
+                   && Regex.IsMatch(guid, "^0{16}.0{15}$", RegexOptions.Compiled);
+        }
+
+#if UNITY_2018 || UNITY_2019
+        private static int GetUsedComponentCount(ParticleSystemVertexStream s)
+        {
+            switch (s)
+            {
+                case ParticleSystemVertexStream.Position:
+                case ParticleSystemVertexStream.Normal:
+                case ParticleSystemVertexStream.Tangent:
+                case ParticleSystemVertexStream.Color:
+                    return 0;
+                case ParticleSystemVertexStream.UV:
+                case ParticleSystemVertexStream.UV2:
+                case ParticleSystemVertexStream.UV3:
+                case ParticleSystemVertexStream.UV4:
+                case ParticleSystemVertexStream.SizeXY:
+                case ParticleSystemVertexStream.StableRandomXY:
+                case ParticleSystemVertexStream.VaryingRandomXY:
+                case ParticleSystemVertexStream.Custom1XY:
+                case ParticleSystemVertexStream.Custom2XY:
+                case ParticleSystemVertexStream.NoiseSumXY:
+                case ParticleSystemVertexStream.NoiseImpulseXY:
+                    return 2;
+                case ParticleSystemVertexStream.AnimBlend:
+                case ParticleSystemVertexStream.AnimFrame:
+                case ParticleSystemVertexStream.VertexID:
+                case ParticleSystemVertexStream.SizeX:
+                case ParticleSystemVertexStream.Rotation:
+                case ParticleSystemVertexStream.RotationSpeed:
+                case ParticleSystemVertexStream.Velocity:
+                case ParticleSystemVertexStream.Speed:
+                case ParticleSystemVertexStream.AgePercent:
+                case ParticleSystemVertexStream.InvStartLifetime:
+                case ParticleSystemVertexStream.StableRandomX:
+                case ParticleSystemVertexStream.VaryingRandomX:
+                case ParticleSystemVertexStream.Custom1X:
+                case ParticleSystemVertexStream.Custom2X:
+                case ParticleSystemVertexStream.NoiseSumX:
+                case ParticleSystemVertexStream.NoiseImpulseX:
+                    return 1;
+                case ParticleSystemVertexStream.Center:
+                case ParticleSystemVertexStream.SizeXYZ:
+                case ParticleSystemVertexStream.Rotation3D:
+                case ParticleSystemVertexStream.RotationSpeed3D:
+                case ParticleSystemVertexStream.StableRandomXYZ:
+                case ParticleSystemVertexStream.VaryingRandomXYZ:
+                case ParticleSystemVertexStream.Custom1XYZ:
+                case ParticleSystemVertexStream.Custom2XYZ:
+                case ParticleSystemVertexStream.NoiseSumXYZ:
+                case ParticleSystemVertexStream.NoiseImpulseXYZ:
+                    return 3;
+                case ParticleSystemVertexStream.StableRandomXYZW:
+                case ParticleSystemVertexStream.VaryingRandomXYZW:
+                case ParticleSystemVertexStream.Custom1XYZW:
+                case ParticleSystemVertexStream.Custom2XYZW:
+                    return 4;
+            }
+
+            return 3;
+        }
+#endif
+
+        private static bool DrawMeshSharing(SerializedProperty spMeshSharing, SerializedProperty spGroupId,
+            SerializedProperty spGroupMaxId, bool showMax)
+        {
+            showMax |= spGroupId.intValue != spGroupMaxId.intValue ||
+                       spGroupId.hasMultipleDifferentValues ||
+                       spGroupMaxId.hasMultipleDifferentValues;
+
+            EditorGUILayout.BeginHorizontal();
+            EditorGUILayout.PropertyField(spMeshSharing);
+
+            EditorGUI.BeginChangeCheck();
+            showMax = GUILayout.Toggle(showMax, s_ContentRandom, EditorStyles.miniButton, GUILayout.Width(60));
+            if (EditorGUI.EndChangeCheck() && !showMax)
+            {
+                spGroupMaxId.intValue = spGroupId.intValue;
+            }
+
+            EditorGUILayout.EndHorizontal();
+
+            EditorGUI.BeginDisabledGroup(spMeshSharing.intValue == 0);
+            EditorGUI.indentLevel++;
+            EditorGUILayout.PropertyField(spGroupId);
+            if (showMax)
+            {
+                EditorGUILayout.PropertyField(spGroupMaxId);
+            }
+            else if (spMeshSharing.intValue == 1 || spMeshSharing.intValue == 4)
+            {
+                EditorGUI.BeginDisabledGroup(true);
+                var obj = UIParticleUpdater.GetPrimary(spGroupId.intValue);
+                EditorGUILayout.ObjectField("Primary", obj, typeof(UIParticle), false);
+                EditorGUI.EndDisabledGroup();
+            }
+
+            EditorGUI.indentLevel--;
+            EditorGUI.EndDisabledGroup();
+
+            return showMax;
+        }
+
+        private static void DrawAutoScaling(SerializedProperty prop, IEnumerable<UIParticle> uiParticles)
+        {
+            EditorGUILayout.PropertyField(prop);
+        }
+
+#if UNITY_2021_2_OR_NEWER
+        private static void WindowFunction()
+#else
+        private static void WindowFunction(Object _, SceneView __)
+#endif
+        {
+            try
+            {
+                if (s_SerializedObject == null || !s_SerializedObject.targetObject) return;
+                var uiParticles = s_SerializedObject.targetObjects.OfType<UIParticle>().ToArray();
+                if (uiParticles.Any(x => !x || !x.canvas)) return;
+
+                s_SerializedObject.Update();
+                using (new EditorGUILayout.VerticalScope(GUILayout.Width(220f)))
+                {
+                    var labelWidth = EditorGUIUtility.labelWidth;
+                    EditorGUIUtility.labelWidth = 100;
+                    EditorGUILayout.PropertyField(s_SerializedObject.FindProperty("m_Enabled"));
+                    s_XYZMode = DrawFloatOrVector3Field(s_SerializedObject.FindProperty("m_Scale3D"), s_XYZMode);
+                    EditorGUILayout.PropertyField(s_SerializedObject.FindProperty("m_PositionMode"));
+                    DrawAutoScaling(s_SerializedObject.FindProperty("m_AutoScalingMode"), uiParticles);
+                    EditorGUIUtility.labelWidth = labelWidth;
+                }
+
+                s_SerializedObject.ApplyModifiedProperties();
+            }
+            catch
+            {
+                // ignored
+            }
+        }
+
+        private void DestroyUIParticle(UIParticle p, bool ignoreCurrent = false)
+        {
+            if (!p || (ignoreCurrent && target == p)) return;
+
+            var cr = p.canvasRenderer;
+            DestroyImmediate(p);
+            DestroyImmediate(cr);
+
+#if UNITY_2018_3_OR_NEWER
+            var stage = PrefabStageUtility.GetCurrentPrefabStage();
+            if (stage != null && stage.scene.isLoaded)
+            {
+#if UNITY_2020_1_OR_NEWER
+                var prefabAssetPath = stage.assetPath;
+#else
+                var prefabAssetPath = stage.prefabAssetPath;
+#endif
+                PrefabUtility.SaveAsPrefabAsset(stage.prefabContentsRoot, prefabAssetPath);
+            }
+#endif
+        }
+
+        private static bool FixButton(bool show, string text)
+        {
+            if (!show) return false;
+            using (new EditorGUILayout.HorizontalScope(GUILayout.ExpandWidth(true)))
+            {
+                EditorGUILayout.HelpBox(text, MessageType.Warning, true);
+                using (new EditorGUILayout.VerticalScope())
+                {
+                    return GUILayout.Button(s_ContentFix, GUILayout.Width(30));
+                }
+            }
+        }
+
+        private static bool DrawFloatOrVector3Field(SerializedProperty sp, bool showXyz)
+        {
+            var x = sp.FindPropertyRelative("x");
+            var y = sp.FindPropertyRelative("y");
+            var z = sp.FindPropertyRelative("z");
+
+            showXyz |= !Mathf.Approximately(x.floatValue, y.floatValue) ||
+                       !Mathf.Approximately(y.floatValue, z.floatValue) ||
+                       y.hasMultipleDifferentValues ||
+                       z.hasMultipleDifferentValues;
+
+            EditorGUILayout.BeginHorizontal();
+            if (showXyz)
+            {
+                EditorGUILayout.PropertyField(sp);
+            }
+            else
+            {
+                EditorGUI.BeginChangeCheck();
+                EditorGUILayout.PropertyField(x, s_ContentScale);
+                if (EditorGUI.EndChangeCheck())
+                {
+                    y.floatValue = z.floatValue = x.floatValue;
+                }
+            }
+
+            EditorGUI.BeginChangeCheck();
+            showXyz = GUILayout.Toggle(showXyz, s_Content3D, EditorStyles.miniButton, GUILayout.Width(30));
+            if (EditorGUI.EndChangeCheck() && !showXyz)
+            {
+                z.floatValue = y.floatValue = x.floatValue;
+            }
+
+            EditorGUILayout.EndHorizontal();
+
+            return showXyz;
+        }
+    }
+}

Packages/src/Editor/UIParticleMenu.cs

@@ -34,10 +34,10 @@ namespace Coffee.UIExtensions
             ps.transform.SetParent(uiParticle.transform, false);
             ps.transform.localPosition = Vector3.zero;
 
-            // Assign default material.
+            // Assign default material (UIAdditive).
             var renderer = ps.GetComponent<ParticleSystemRenderer>();
-            var defaultMat = AssetDatabase.GetBuiltinExtraResource<Material>("Default-Particle.mat");
-            renderer.material = defaultMat ? defaultMat : renderer.material;
+            var path = AssetDatabase.GUIDToAssetPath("9944483a3e009401ba5dcc42f14d5c63");
+            renderer.material = AssetDatabase.LoadAssetAtPath<Material>(path);
 
             // Refresh particles.
             uiParticle.RefreshParticles();

Packages/src/Icons.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 7a55e246f37df405bac88eac692e3a86
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/src/Icons/UIParticleIcon.png.meta

@@ -0,0 +1,127 @@
+fileFormatVersion: 2
+guid: 5f0675613942149309588d556e33d990
+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
+    flipGreenChannel: 0
+  isReadable: 0
+  streamingMipmaps: 0
+  streamingMipmapsPriority: 0
+  vTOnly: 0
+  ignoreMipmapLimit: 0
+  grayScaleToAlpha: 0
+  generateCubemap: 6
+  cubemapConvolution: 0
+  seamlessCubemap: 0
+  textureFormat: 1
+  maxTextureSize: 2048
+  textureSettings:
+    serializedVersion: 2
+    filterMode: 1
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+  lightmap: 0
+  compressionQuality: 50
+  spriteMode: 0
+  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: 2
+  textureShape: 1
+  singleChannelComponent: 0
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+  flipbookColumns: 1
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+  textureFormatSet: 0
+  ignorePngGamma: 0
+  applyGammaDecoding: 0
+  swizzle: 50462976
+  cookieLightType: 0
+  platformSettings:
+  - serializedVersion: 3
+    buildTarget: DefaultTexturePlatform
+    maxTextureSize: 64
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    ignorePlatformSupport: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Standalone
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    ignorePlatformSupport: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Server
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    ignorePlatformSupport: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  spriteSheet:
+    serializedVersion: 2
+    sprites: []
+    outline: []
+    physicsShape: []
+    bones: []
+    spriteID: 
+    internalID: 0
+    vertices: []
+    indices: 
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+    nameFileIdTable: {}
+  mipmapLimitGroupName: 
+  pSDRemoveMatte: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/src/LICENSE.md

@@ -1,7 +1,7 @@
-Copyright 2018 mob-sakai
+Copyright 2018-2023 mob-sakai
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Packages/src/README.md

@@ -0,0 +1,483 @@
+# 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?include_prereleases)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
+[![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.txt)  
+![](https://img.shields.io/badge/Unity-2018.2+-57b9d3.svg?style=flat&logo=unity)
+![](https://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/twitter/follow/mob_sakai.svg?label=Follow&style=social)](https://twitter.com/intent/follow?screen_name=mob_sakai)
+
+<< [📝 Description](#-description) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
+
+<br><br>
+
+## 📝 Description
+
+![](https://user-images.githubusercontent.com/12690315/41771577-8da4b968-7650-11e8-9524-cd162c422d9d.gif)
+
+This package utilizes the new APIs `MeshBake/MashTrailBake` (introduced with Unity 2018.2) to render particles through
+CanvasRenderer.  
+You can render, mask, and sort your ParticleSystems for UI without the necessity of an additional Camera, RenderTexture,
+or Canvas.
+
+### Features
+
+* Easy to use: The package is ready to use out of the box.
+* Sort particle effects and other UI by sibling index.
+* No extra Camera, RenderTexture, or Canvas required.
+* Masking options for Mask or RectMask2D.
+* Support for the Trail module.
+* Support for CanvasGroup alpha.
+* No allocations needed to render particles.
+* Compatibility with overlay, camera space, and world space.
+* Support for Universal Render Pipeline (URP) and High Definition Render Pipeline (HDRP).
+* Support for disabling `Enter Play Mode Options > Reload Domain`.
+* Support for changing material property with AnimationClip (AnimatableProperty).  
+  ![AnimatableProperty.gif][AnimatableProperty.gif]
+* [4.0.0+] Support for 8+ materials.
+* [4.0.0+] Correct world space particle position adjustment when changing window size for standalone platforms (Windows,
+  MacOSX, and Linux).
+* [4.0.0+] Adaptive scaling for UI.
+* [4.0.0+] Mesh sharing group to improve performance.  
+  ![MeshSharing.gif][MeshSharing.gif]
+* [4.0.0+] Particle attractor component.  
+  ![ParticleAttractor.gif][ParticleAttractor.gif]
+* [4.1.0+] Relative/Absolute particle position mode.  
+  ![AbsolutePosition.gif][AbsolutePosition.gif]
+
+[AnimatableProperty.gif]: https://user-images.githubusercontent.com/12690315/53286323-2d94a980-37b0-11e9-8afb-c4a207805ff2.gif
+
+[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>
+
+## 🎮 Demo
+
+* [WebGL Demo](https://mob-sakai.github.io/demos/UIParticle_Demo/index.html)
+
+> ![](https://user-images.githubusercontent.com/12690315/174311768-1843a5f2-f776-491b-aaa8-2a131a8b6a16.gif)
+
+* [WebGL Demo (Cartoon FX & War FX)](https://mob-sakai.github.io/Demos/ParticleEffectForUGUI_CFX)
+    * [Cartoon FX Free][CFX] & [War FX][WFX] (by [Jean Moreno (JMO)][JMO]) with UIParticle
+
+> ![](https://user-images.githubusercontent.com/12690315/91664766-3e07ac00-eb2c-11ea-978b-ef723be80619.gif)
+
+[CFX]: https://assetstore.unity.com/packages/vfx/particles/cartoon-fx-free-109565
+
+[WFX]: https://assetstore.unity.com/packages/vfx/particles/war-fx-5669
+
+[JMO]: https://assetstore.unity.com/publishers/1669
+
+
+<br><br>
+
+## ⚙ Installation
+
+_This package requires Unity 2018.3 or later._
+
+#### Install via OpenUPM
+
+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.
+
+If you have [openupm-cli](https://github.com/openupm/openupm-cli) installed, then run the following command in your
+project's directory:
+
+```sh
+openupm add com.coffee.ui-particle
+```
+
+#### Install via UPM (using Git URL)
+
+Navigate to your project's Packages folder and open the `manifest.json` file. Then add this package somewhere in
+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.
+
+* e.g. `"com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.6.0",`
+
+Or, use [UpmGitExtension](https://github.com/mob-sakai/UpmGitExtension) to install and update the package.
+
+<br><br>
+
+## 🚀 Usage
+
+### UIParticle Component
+
+`UIParticle` controls the ParticleSystems that are attached to its own game objects and child game objects.
+
+![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/3559df45-63e7-4c4c-9233-f455779efa29)
+
+- **Maskable**: Does this graphic allow masking.
+- **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 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.
+- **Position Mode**: Emission position mode.
+    - **Absolute:** Emit from the world position of the `ParticleSystem`.
+    - **Relative:** Emit from the scaled position of the `ParticleSystem`.
+- **Auto Scaling**: `Transform.lossyScale` (=world scale) will be set to `(1, 1, 1)` on update. It prevents the
+  root-Canvas scale from affecting the hierarchy-scaled `ParticleSystem`.
+- **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
+and z-position.
+
+<br><br>
+
+#### 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)
+2. Adjust the ParticleSystem as you like.
+   ![particle1](https://user-images.githubusercontent.com/12690315/95007359-ca385200-0649-11eb-8383-627c9750bda8.png)
+
+<br>
+
+#### 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)
+2. Drag and drop your ParticleSystem prefab onto UIParticle.
+   ![particle3](https://user-images.githubusercontent.com/12690315/95007356-c6a4cb00-0649-11eb-9316-562f4bce3f31.png)
+
+<br>
+
+#### 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-maskrectmask2d-component)
+section.
+
+![](https://user-images.githubusercontent.com/12690315/95017591-3b512700-0695-11eb-864e-04166ea1809a.png)
+
+<br><br>
+
+### Script usage
+
+```cs
+// Instant ParticleSystem prefab with UIParticle on runtime.
+var go = GameObject.Instantiate(prefab);
+var uiParticle = go.AddComponent<UIParticle>();
+
+// Control by ParticleSystem.
+particleSystem.Play();
+particleSystem.Emit(10);
+
+// Control by UIParticle.
+uiParticle.Play();
+uiParticle.Stop();
+```
+
+<br><br>
+
+### UIParticleAttractor component
+
+`UIParticleAttractor` attracts particles generated by the specified ParticleSystem.
+
+![](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 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.
+- **Max Speed**: Maximum speed of attracting. If this value is too small, attracting may not be completed by the end of
+  the lifetime, and `OnAttracted` may not be called.
+- **Movement**: Attracting movement type. (`Linear`, `Smooth`, `Sphere`)
+- **Update Mode**: Update mode.
+    - **Normal:** Update with scaled delta time.
+    - **Unscaled Time:** Update with unscaled delta time.
+- **OnAttracted**: An event called when attracting is complete (per particle).
+
+<br><br>
+
+## 🛠 Development Note
+
+### Compares the Baking mesh approach with the conventional approach
+
+- **Baking mesh approach (=UIParticle)**  
+  ![](https://user-images.githubusercontent.com/12690315/41765089-0302b9a2-763e-11e8-88b3-b6ffa306bbb0.gif)
+    - ✅ Rendered as is.
+    - ✅ Maskable.
+    - ✅ Sortable.
+    - ✅ Less objects.
+
+- **Do nothing (=Plain ParticleSystem)**  
+  ![](https://user-images.githubusercontent.com/12690315/41765090-0329828a-763e-11e8-8d8a-f1d269ea3bc7.gif)
+    - ✅ Rendered as is.
+    - ❌ Looks like a glitch.
+    - ❌ Not maskable.
+    - ❌ Not sortable.
+
+- **Convert particle to UIVertex (=[UIParticleSystem][UIParticleSystem])**  
+  ![](https://user-images.githubusercontent.com/12690315/41765088-02deb9c6-763e-11e8-98d0-9e0c1766ef39.gif)
+    - ✅ Maskable.
+    - ✅ Sortable.
+    - ❌ Adjustment is difficult.
+    - ❌ Requires UI shaders.
+    - ❌ Difficult to adjust scale.
+    - ❌ Force hierarchy scalling.
+    - ❌ Simulation results are incorrect.
+    - ❌ Trail, rotation of transform, time scaling are not supported.
+    - ❌ Generate heavy GC every frame.
+
+- **Use Canvas to sort (Sorting By Canvas )**  
+  ![](https://user-images.githubusercontent.com/12690315/41765087-02b866ea-763e-11e8-8c33-081c9ad852f8.gif)
+    - ✅ Rendered as is.
+    - ✅ Sortable.
+    - ❌ You must to manage sorting orders.
+    - ❌ Not maskable.
+    - ❌ More batches.
+    - ❌ Requires Canvas.
+
+- **Use RenderTexture**  
+  ![](https://user-images.githubusercontent.com/12690315/41765085-0291b3e2-763e-11e8-827b-72e5ee9bc556.gif)
+    - ✅ Maskable.
+    - ✅ Sortable.
+    - ❌ Requires Camera and RenderTexture.
+    - ❌ Difficult to adjust position and size.
+    - ❌ Quality depends on the RenderTexture's setting.
+
+[UIParticleSystem]: https://forum.unity.com/threads/free-script-particle-systems-in-ui-screen-space-overlay.406862/
+
+#### [Performance test results](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/193#issuecomment-1160028374)
+
+| Approach                    | FPS on Editor | FPS on iPhone6 | FPS on Xperia XZ |
+|-----------------------------|---------------|----------------|------------------|
+| Particle System             | 43            | 57             | 22               |
+| UIParticleSystem            | 4             | 3              | 0 (unmeasurable) |
+| Sorting By Canvas           | 43            | 44             | 18               |
+| UIParticle                  | 17            | 12             | 4                |
+| UIParticle with MeshSharing | 44            | 45             | 30               |
+
+### 🔍 FAQ: Why Are My UIParticles Not Displayed Correctly?
+
+If `ParticleSystem` alone displays particles correctly but `UIParticle` does not, please check the following points:
+
+- [Shader Limitation](#shader-limitation)
+    - `UIParticle` does not support all built-in shaders except for `UI/Default`.
+    - Most cases can be solved by using `UI/Additive` or `UI/Default`.
+- Particles are not masked
+    - `UIParticle` is maskable.
+    - Set `Mask` or `RectMask2D` component properly.
+    - [Use maskable/clipable shader](#how-to-make-a-custom-shader-to-support-maskrectmask2d-component) (such
+      as `UI/Additive` or `UI/Default`)
+- Particles are too small
+    - If particles are small enough, they will not appear on the screen.
+    - Increase the `Scale` value.
+    - If you don't want to change the apparent size depending on the resolution, try the `Auto Scaling` option.
+- Particles are too many
+    - No more than 65535 vertices can be displayed (for mesh combination limitations).
+    - Please set `Emission` module and `Max Particles` of ParticleSystem properly.
+- Particles are emitted off-screen.
+    - When `Position Mode = Relative`, particles are emitted from the scaled position of the ParticleSystem, not from
+      the screen point of the ParticleSystem.
+    - Place the ParticleSystem in the proper position or try `Position Mode = Absolute`.
+- Attaching `UIParticle` to the same object as `ParticleSystem`
+    - `Transform.localScale` will be overridden by the `Auto Scaling` option.
+    - It is recommended to place `ParticleSystem` under `UIParticle`.
+- If `Transform.localScale` contains 0, rendering will be skipped.
+- Displayed particles are in the correct position but too large/too small
+    - Adjust `ParticleSystem.renderer.Min/MaxParticleSize`.
+
+<br>
+
+### Shader Limitation
+
+The use of UI shaders is recommended.
+
+- If you need a simple Additive shader, use the `UI/Additive` shader instead.
+- If you need a simple alpha-blend shader, use the `UI/Default` shader instead.
+- If your custom shader does not work properly with UIParticle, consider creating a custom UI shader.
+
+#### Built-in shaders are not supported
+
+`UIParticle` does not support all built-in shaders except for `UI/Default`.  
+If their use is detected, an error is displayed in the inspector.  
+Use UI shaders instead.
+
+#### (Unity 2018 or 2019) UV.zw components will be discarded
+
+UIParticleRenderer renders the particles based on UIVertex.  
+Therefore, only the xy components are available for each UV in the shader. (zw components will be discarded).  
+So unfortunately, UIParticles will not work well with some shaders.
+
+#### (Unity 2018 or 2019) Custom vertex streams
+
+When using custom vertex streams, you can fill zw components with "unnecessary" data.  
+Refer to [this issue](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/191) for more information.
+
+<br>
+
+### Overheads
+
+UIParticle has some overheads, and the batching depends on uGUI.  
+When improving performance, keep the following in mind:
+
+- If you are displaying a large number of the same effect, consider the `Mesh Sharing` feature in
+  the [UIParticle Component](#uiparticle-component).
+    - If you don't like the uniform output, consider the `Random Group` feature.  
+      ![](https://user-images.githubusercontent.com/12690315/174311048-c882df81-6c34-4eba-b0aa-5645457692f1.gif)
+- If you are using multiple materials, you will have more draw calls.
+    - Consider a single material, atlasing the sprites, and using `Sprite` mode in the `Texture Sheet Animation` module
+      in the ParticleSystem.
+
+### How to Make a Custom Shader to Support Mask/RectMask2D Component
+
+<details>
+<summary>Shader tips</summary>
+
+```ShaderLab
+Shader "Your/Custom/Shader"
+{
+    Properties
+    {
+        // ...
+        // #### required for Mask ####
+        _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
+        {
+            // ...
+        }
+
+        // #### required for Mask ####
+        Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp]
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+        ColorMask [_ColorMask]
+        // ...
+
+        Pass
+        {
+            // ...
+            // #### required for RectMask2D ####
+            #include "UnityUI.cginc"
+            #pragma multi_compile __ UNITY_UI_CLIP_RECT
+            float4 _ClipRect;
+
+            // #### required for Mask ####
+            #pragma multi_compile __ UNITY_UI_ALPHACLIP
+
+            struct appdata_t
+            {
+                // ...
+            };
+
+            struct v2f
+            {
+                // ...
+                // #### required for RectMask2D ####
+                float4 worldPosition    : TEXCOORD1;
+            };
+            
+            v2f vert(appdata_t v)
+            {
+                v2f OUT;
+                // ...
+                // #### required for RectMask2D ####
+                OUT.worldPosition = v.vertex;
+                return OUT;
+            }
+
+            fixed4 frag(v2f IN) : SV_Target
+            {
+                // ...
+                // #### required for RectMask2D ####
+                #ifdef UNITY_UI_CLIP_RECT
+                    color.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);
+                #endif
+
+                // #### required for Mask ####
+                #ifdef UNITY_UI_ALPHACLIP
+                    clip (color.a - 0.001);
+                #endif
+
+                return color;
+            }
+            ENDCG
+        }
+    }
+}
+```
+
+</details>
+
+<br><br>
+
+## 🤝 Contributing
+
+### Issues
+
+Issues are incredibly valuable to this project:
+
+- Ideas provide a valuable source of contributions that others can make.
+- Problems help identify areas where this project needs improvement.
+- Questions indicate where contributors can enhance the user experience.
+
+### Pull Requests
+
+Pull requests offer a fantastic way to contribute your ideas to this repository.  
+Please refer to [CONTRIBUTING.md](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/CONTRIBUTING.md)
+and [develop branch](https://github.com/mob-sakai/ParticleEffectForUGUI/tree/develop) for guidelines.
+
+### Support
+
+This is an open-source project developed during my spare time.  
+If you appreciate it, consider supporting me.  
+Your support allows me to dedicate more time to development. 😊
+
+[![](https://user-images.githubusercontent.com/12690315/50731629-3b18b480-11ad-11e9-8fad-4b13f27969c1.png)](https://www.patreon.com/join/2343451?)  
+[![](https://user-images.githubusercontent.com/12690315/66942881-03686280-f085-11e9-9586-fc0b6011029f.png)](https://github.com/users/mob-sakai/sponsorship)
+
+<br><br>
+
+## License
+
+* MIT
+
+## Author
+
+* ![](https://user-images.githubusercontent.com/12690315/96986908-434a0b80-155d-11eb-8275-85138ab90afa.png) [mob-sakai](https://github.com/mob-sakai) [![](https://img.shields.io/twitter/follow/mob_sakai.svg?label=Follow&style=social)](https://twitter.com/intent/follow?screen_name=mob_sakai) ![GitHub followers](https://img.shields.io/github/followers/mob-sakai?style=social)
+
+## See Also
+
+* GitHub page : https://github.com/mob-sakai/ParticleEffectForUGUI
+* Releases : https://github.com/mob-sakai/ParticleEffectForUGUI/releases
+* Issue tracker : https://github.com/mob-sakai/ParticleEffectForUGUI/issues
+* Change log : https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/CHANGELOG.md

Packages/src/Runtime/AnimatableProperty.cs

@@ -1,8 +1,9 @@
-using UnityEngine;
+using System;
+using UnityEngine;
 
 namespace Coffee.UIExtensions
 {
-    [System.Serializable]
+    [Serializable]
     public class AnimatableProperty : ISerializationCallbackReceiver
     {
         public enum ShaderPropertyType
@@ -11,16 +12,22 @@ namespace Coffee.UIExtensions
             Vector,
             Float,
             Range,
-            Texture,
+            Texture
         }
 
-        [SerializeField] string m_Name = "";
-        [SerializeField] ShaderPropertyType m_Type = ShaderPropertyType.Vector;
+        [SerializeField] private string m_Name = "";
+        [SerializeField] private ShaderPropertyType m_Type = ShaderPropertyType.Vector;
         public int id { get; private set; }
 
-        public ShaderPropertyType type
+        public ShaderPropertyType type => m_Type;
+
+        void ISerializationCallbackReceiver.OnBeforeSerialize()
         {
-            get { return m_Type; }
+        }
+
+        void ISerializationCallbackReceiver.OnAfterDeserialize()
+        {
+            id = Shader.PropertyToID(m_Name);
         }
 
         public void UpdateMaterialProperties(Material material, MaterialPropertyBlock mpb)
@@ -31,35 +38,38 @@ namespace Coffee.UIExtensions
             {
                 case ShaderPropertyType.Color:
                     var color = mpb.GetColor(id);
-                    if (color != default(Color))
+                    if (color != default)
+                    {
                         material.SetColor(id, color);
+                    }
+
                     break;
                 case ShaderPropertyType.Vector:
                     var vector = mpb.GetVector(id);
-                    if (vector != default(Vector4))
+                    if (vector != default)
+                    {
                         material.SetVector(id, vector);
+                    }
+
                     break;
                 case ShaderPropertyType.Float:
                 case ShaderPropertyType.Range:
                     var value = mpb.GetFloat(id);
-                    if (value != default(float))
+                    if (!Mathf.Approximately(value, 0))
+                    {
                         material.SetFloat(id, value);
+                    }
+
                     break;
                 case ShaderPropertyType.Texture:
                     var tex = mpb.GetTexture(id);
                     if (tex != default(Texture))
+                    {
                         material.SetTexture(id, tex);
+                    }
+
                     break;
             }
         }
-
-        public void OnBeforeSerialize()
-        {
-        }
-
-        public void OnAfterDeserialize()
-        {
-            id = Shader.PropertyToID(m_Name);
-        }
     }
 }

Packages/src/Runtime/ModifiedMaterial.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using UnityEngine;
 
 namespace Coffee.UIParticleExtensions
@@ -7,28 +7,33 @@ namespace Coffee.UIParticleExtensions
     {
         private static readonly List<MatEntry> s_Entries = new List<MatEntry>();
 
-        public static Material Add(Material baseMat, Texture texture, int id)
+        public static Material Add(Material baseMat, Texture texture, int id, int props)
         {
             MatEntry e;
-            for (var i = 0; i < s_Entries.Count; ++i)
+            for (var i = 0; i < s_Entries.Count; i++)
             {
                 e = s_Entries[i];
-                if (e.baseMat != baseMat || e.texture != texture || e.id != id) continue;
+                if (e.baseMat != baseMat || e.texture != texture || e.id != id || e.props != props) continue;
                 ++e.count;
                 return e.customMat;
             }
 
-            e = new MatEntry();
-            e.count = 1;
-            e.baseMat = baseMat;
-            e.texture = texture;
-            e.id = id;
-            e.customMat = new Material(baseMat);
-            e.customMat.hideFlags = HideFlags.HideAndDontSave;
-            if (texture)
-                e.customMat.mainTexture = texture;
+            e = new MatEntry
+            {
+                count = 1,
+                baseMat = baseMat,
+                texture = texture,
+                id = id,
+                props = props,
+                customMat = new Material(baseMat)
+                {
+                    name = $"{baseMat.name}_{id}",
+                    hideFlags = HideFlags.DontSave | HideFlags.NotEditable,
+                    mainTexture = texture ? texture : baseMat.mainTexture
+                }
+            };
             s_Entries.Add(e);
-            // Debug.LogFormat(">>>> ModifiedMaterial.Add -> count = {0} {1} {2} {3}", s_Entries.Count, baseMat, texture, id);
+            //Debug.LogFormat(">>>> ModifiedMaterial.Add -> count = count:{0}, mat:{1}, tex:{2}, id:{3}", s_Entries.Count, baseMat, texture, id);
             return e.customMat;
         }
 
@@ -42,8 +47,9 @@ namespace Coffee.UIParticleExtensions
                 if (e.customMat != customMat) continue;
                 if (--e.count == 0)
                 {
-                    // Debug.LogFormat(">>>> ModifiedMaterial.Add -> count = {0} {1} {2} {3}", s_Entries.Count - 1, e.customMat, e.texture, e.id);
-                    DestroyImmediate(e.customMat);
+                    //Debug.LogFormat(">>>> ModifiedMaterial.Remove -> count:{0}, mat:{1}, tex:{2}, id:{3}", s_Entries.Count - 1, e.customMat, e.texture, e.id);
+                    Misc.DestroyImmediate(e.customMat);
+                    e.customMat = null;
                     e.baseMat = null;
                     e.texture = null;
                     s_Entries.RemoveAt(i);
@@ -53,22 +59,14 @@ namespace Coffee.UIParticleExtensions
             }
         }
 
-        private static void DestroyImmediate(Object obj)
-        {
-            if (!obj) return;
-            if (Application.isEditor)
-                Object.DestroyImmediate(obj);
-            else
-                Object.Destroy(obj);
-        }
-
         private class MatEntry
         {
             public Material baseMat;
-            public Material customMat;
             public int count;
-            public Texture texture;
+            public Material customMat;
             public int id;
+            public int props;
+            public Texture texture;
         }
     }
 }

Packages/src/Runtime/UIParticle.cs

@@ -0,0 +1,636 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using Coffee.UIParticleExtensions;
+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.Serialization;
+using UnityEngine.UI;
+using Random = UnityEngine.Random;
+
+[assembly: InternalsVisibleTo("Coffee.UIParticle.Editor")]
+
+namespace Coffee.UIExtensions
+{
+    /// <summary>
+    /// Render maskable and sortable particle effect ,without Camera, RenderTexture or Canvas.
+    /// </summary>
+    [ExecuteAlways]
+    [RequireComponent(typeof(RectTransform))]
+    [RequireComponent(typeof(CanvasRenderer))]
+    public class UIParticle : MaskableGraphic, ISerializationCallbackReceiver
+    {
+        public enum AutoScalingMode
+        {
+            None,
+            UIParticle,
+            Transform
+        }
+
+        public enum MeshSharing
+        {
+            None,
+            Auto,
+            Primary,
+            PrimarySimulator,
+            Replica
+        }
+
+        public enum PositionMode
+        {
+            Relative,
+            Absolute
+        }
+
+        [HideInInspector]
+        [SerializeField]
+        internal bool m_IsTrail;
+
+        [HideInInspector]
+        [FormerlySerializedAs("m_IgnoreParent")]
+        [SerializeField]
+        private bool m_IgnoreCanvasScaler;
+
+        [HideInInspector]
+        [SerializeField]
+        private bool m_AbsoluteMode;
+
+        [Tooltip("Particle effect scale")]
+        [SerializeField]
+        private Vector3 m_Scale3D = new Vector3(10, 10, 10);
+
+        [Tooltip("Animatable material properties.\n" +
+                 "If you want to change the material properties of the ParticleSystem in Animation, enable it.")]
+        [SerializeField]
+        internal AnimatableProperty[] m_AnimatableProperties = new AnimatableProperty[0];
+
+        [Tooltip("Particles")]
+        [SerializeField]
+        private List<ParticleSystem> m_Particles = new List<ParticleSystem>();
+
+        [Tooltip("Mesh sharing.\n" +
+                 "None: disable mesh sharing.\n" +
+                 "Auto: automatically select Primary/Replica.\n" +
+                 "Primary: provides particle simulation results to the same group.\n" +
+                 "Primary Simulator: Primary, but do not render the particle (simulation only).\n" +
+                 "Replica: render simulation results provided by the primary.")]
+        [SerializeField]
+        private MeshSharing m_MeshSharing = MeshSharing.None;
+
+        [Tooltip("Mesh sharing group ID.\n" +
+                 "If non-zero is specified, particle simulation results are shared within the group.")]
+        [SerializeField]
+        private int m_GroupId;
+
+        [SerializeField]
+        private int m_GroupMaxId;
+
+        [Tooltip("Relative: The particles will be emitted from the scaled position of ParticleSystem.\n" +
+                 "Absolute: The particles will be emitted from the world position of ParticleSystem.")]
+        [SerializeField]
+        private PositionMode m_PositionMode = PositionMode.Relative;
+
+        [SerializeField]
+        [Tooltip("Prevent the root-Canvas scale from affecting the hierarchy-scaled ParticleSystem.")]
+        private bool m_AutoScaling = true;
+
+        [SerializeField]
+        [Tooltip("Transform: Transform.lossyScale (=world scale) will be set to (1, 1, 1)." +
+                 "UIParticle: UIParticle.scale will be adjusted.")]
+        private AutoScalingMode m_AutoScalingMode = AutoScalingMode.Transform;
+
+        private readonly List<UIParticleRenderer> _renderers = new List<UIParticleRenderer>();
+        private int _groupId;
+        private Camera _orthoCamera;
+        private DrivenRectTransformTracker _tracker;
+        private Vector3 _storedScale;
+        private bool _isScaleStored;
+
+        /// <summary>
+        /// Should this graphic be considered a target for ray-casting?
+        /// </summary>
+        public override bool raycastTarget
+        {
+            get => false;
+            set { }
+        }
+
+        /// <summary>
+        /// Mesh sharing.
+        /// 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.
+        /// </summary>
+        public MeshSharing meshSharing
+        {
+            get => m_MeshSharing;
+            set => m_MeshSharing = value;
+        }
+
+        /// <summary>
+        /// Mesh sharing group ID.
+        /// If non-zero is specified, particle simulation results are shared within the group.
+        /// </summary>
+        public int groupId
+        {
+            get => _groupId;
+            set
+            {
+                if (m_GroupId == value) return;
+                m_GroupId = value;
+                if (m_GroupId != m_GroupMaxId)
+                {
+                    ResetGroupId();
+                }
+            }
+        }
+
+        public int groupMaxId
+        {
+            get => m_GroupMaxId;
+            set
+            {
+                if (m_GroupMaxId == value) return;
+                m_GroupMaxId = value;
+                ResetGroupId();
+            }
+        }
+
+        /// <summary>
+        /// Particle position mode.
+        /// 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>
+        public PositionMode positionMode
+        {
+            get => m_PositionMode;
+            set => m_PositionMode = value;
+        }
+
+        /// <summary>
+        /// Particle position mode.
+        /// 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>
+        public bool absoluteMode
+        {
+            get => m_PositionMode == PositionMode.Absolute;
+            set => positionMode = value ? PositionMode.Absolute : PositionMode.Relative;
+        }
+
+        /// <summary>
+        /// Prevents the root-Canvas scale from affecting the hierarchy-scaled ParticleSystem.
+        /// </summary>
+        [Obsolete("The autoScaling is now obsolete. Please use the autoScalingMode instead.", false)]
+        public bool autoScaling
+        {
+            get => m_AutoScalingMode != AutoScalingMode.None;
+            set => autoScalingMode = value ? AutoScalingMode.Transform : AutoScalingMode.None;
+        }
+
+        /// <summary>
+        /// Auto scaling mode.
+        /// Transform: Transform.lossyScale (=world scale) will be set to (1, 1, 1).
+        /// UIParticle: UIParticle.scale will be adjusted.
+        /// </summary>
+        public AutoScalingMode autoScalingMode
+        {
+            get => m_AutoScalingMode;
+            set
+            {
+                if (m_AutoScalingMode == value) return;
+                m_AutoScalingMode = value;
+
+                if (autoScalingMode != AutoScalingMode.Transform && _isScaleStored)
+                {
+                    transform.localScale = _storedScale;
+                    _isScaleStored = false;
+                }
+            }
+        }
+
+        internal bool useMeshSharing => m_MeshSharing != MeshSharing.None;
+
+        internal bool isPrimary =>
+            m_MeshSharing == MeshSharing.Primary
+            || m_MeshSharing == MeshSharing.PrimarySimulator;
+
+        internal bool canSimulate =>
+            m_MeshSharing == MeshSharing.None
+            || m_MeshSharing == MeshSharing.Auto
+            || m_MeshSharing == MeshSharing.Primary
+            || m_MeshSharing == MeshSharing.PrimarySimulator;
+
+        internal bool canRender =>
+            m_MeshSharing == MeshSharing.None
+            || m_MeshSharing == MeshSharing.Auto
+            || m_MeshSharing == MeshSharing.Primary
+            || m_MeshSharing == MeshSharing.Replica;
+
+        /// <summary>
+        /// Particle effect scale.
+        /// </summary>
+        public float scale
+        {
+            get => m_Scale3D.x;
+            set => m_Scale3D = new Vector3(value, value, value);
+        }
+
+        /// <summary>
+        /// Particle effect scale.
+        /// </summary>
+        public Vector3 scale3D
+        {
+            get => m_Scale3D;
+            set => m_Scale3D = value;
+        }
+
+        /// <summary>
+        /// Particle effect scale.
+        /// </summary>
+        public Vector3 scale3DForCalc => autoScalingMode == AutoScalingMode.Transform
+            ? m_Scale3D
+            : m_Scale3D.GetScaled(canvasScale, transform.localScale);
+
+        public List<ParticleSystem> particles => m_Particles;
+
+        /// <summary>
+        /// Get all base materials to render.
+        /// </summary>
+        public IEnumerable<Material> materials
+        {
+            get
+            {
+                for (var i = 0; i < _renderers.Count; i++)
+                {
+                    var r = _renderers[i];
+                    if (!r || !r.material) continue;
+                    yield return r.material;
+                }
+            }
+        }
+
+        public override Material materialForRendering => null;
+
+        /// <summary>
+        /// Paused.
+        /// </summary>
+        public bool isPaused { get; private set; }
+
+        public Vector3 parentScale { get; private set; }
+
+        public Vector3 canvasScale { get; private set; }
+
+        protected override void OnEnable()
+        {
+            _isScaleStored = false;
+            ResetGroupId();
+            UIParticleUpdater.Register(this);
+            RegisterDirtyMaterialCallback(UpdateRendererMaterial);
+
+            if (0 < particles.Count)
+            {
+                RefreshParticles(particles);
+            }
+            else
+            {
+                RefreshParticles();
+            }
+
+            base.OnEnable();
+        }
+
+        /// <summary>
+        /// This function is called when the behaviour becomes disabled.
+        /// </summary>
+        protected override void OnDisable()
+        {
+            _tracker.Clear();
+            if (autoScalingMode == AutoScalingMode.Transform && _isScaleStored)
+            {
+                transform.localScale = _storedScale;
+            }
+
+            _isScaleStored = false;
+            UIParticleUpdater.Unregister(this);
+            _renderers.ForEach(r => r.Reset());
+            UnregisterDirtyMaterialCallback(UpdateRendererMaterial);
+
+            base.OnDisable();
+        }
+
+        /// <summary>
+        /// Callback for when properties have been changed by animation.
+        /// </summary>
+        protected override void OnDidApplyAnimationProperties()
+        {
+        }
+
+        void ISerializationCallbackReceiver.OnBeforeSerialize()
+        {
+        }
+
+        void ISerializationCallbackReceiver.OnAfterDeserialize()
+        {
+            if (m_IgnoreCanvasScaler || m_AutoScaling)
+            {
+                m_IgnoreCanvasScaler = false;
+                m_AutoScaling = false;
+                m_AutoScalingMode = AutoScalingMode.Transform;
+            }
+
+            if (m_AbsoluteMode)
+            {
+                m_AbsoluteMode = false;
+                m_PositionMode = PositionMode.Absolute;
+            }
+        }
+
+        public void Play()
+        {
+            particles.Exec(p => p.Simulate(0, false, true));
+            isPaused = false;
+        }
+
+        public void Pause()
+        {
+            particles.Exec(p => p.Pause());
+            isPaused = true;
+        }
+
+        public void Resume()
+        {
+            isPaused = false;
+        }
+
+        public void Stop()
+        {
+            particles.Exec(p => p.Stop());
+            isPaused = true;
+        }
+
+        public void StartEmission()
+        {
+            particles.Exec(p =>
+            {
+                var emission = p.emission;
+                emission.enabled = true;
+            });
+        }
+
+        public void StopEmission()
+        {
+            particles.Exec(p =>
+            {
+                var emission = p.emission;
+                emission.enabled = false;
+            });
+        }
+
+        public void Clear()
+        {
+            particles.Exec(p => p.Clear());
+            isPaused = true;
+        }
+
+        public void SetParticleSystemInstance(GameObject instance)
+        {
+            SetParticleSystemInstance(instance, true);
+        }
+
+        public void SetParticleSystemInstance(GameObject instance, bool destroyOldParticles)
+        {
+            if (!instance) return;
+
+            foreach (Transform child in transform)
+            {
+                var go = child.gameObject;
+                go.SetActive(false);
+                if (destroyOldParticles)
+                {
+                    Misc.Destroy(go);
+                }
+            }
+
+            var tr = instance.transform;
+            tr.SetParent(transform, false);
+            tr.localPosition = Vector3.zero;
+
+            RefreshParticles(instance);
+        }
+
+        public void SetParticleSystemPrefab(GameObject prefab)
+        {
+            if (!prefab) return;
+
+            SetParticleSystemInstance(Instantiate(prefab.gameObject), true);
+        }
+
+        public void RefreshParticles()
+        {
+            RefreshParticles(gameObject);
+        }
+
+        private void RefreshParticles(GameObject root)
+        {
+            if (!root) return;
+            root.GetComponentsInChildren(true, particles);
+            particles.RemoveAll(x => x.GetComponentInParent<UIParticle>(true) != this);
+
+            for (var i = 0; i < particles.Count; i++)
+            {
+                var ps = particles[i];
+                var tsa = ps.textureSheetAnimation;
+                if (tsa.mode == ParticleSystemAnimationMode.Sprites && tsa.uvChannelMask == 0)
+                {
+                    tsa.uvChannelMask = UVChannelFlags.UV0;
+                }
+            }
+
+            RefreshParticles(particles);
+        }
+
+        public void RefreshParticles(List<ParticleSystem> particles)
+        {
+            // #246: Nullptr exceptions when using nested UIParticle components in hierarchy
+            _renderers.Clear();
+            foreach (Transform child in transform)
+            {
+                var uiParticleRenderer = child.GetComponent<UIParticleRenderer>();
+
+                if (uiParticleRenderer != null)
+                {
+                    _renderers.Add(uiParticleRenderer);
+                }
+            }
+
+            for (var i = 0; i < _renderers.Count; i++)
+            {
+                _renderers[i].Reset(i);
+            }
+
+            var j = 0;
+            for (var i = 0; i < particles.Count; i++)
+            {
+                var ps = particles[i];
+                if (!ps) continue;
+                GetRenderer(j++).Set(this, ps, false);
+                if (ps.trails.enabled)
+                {
+                    GetRenderer(j++).Set(this, ps, true);
+                }
+            }
+        }
+
+        internal void UpdateTransformScale()
+        {
+            _tracker.Clear();
+            canvasScale = canvas.rootCanvas.transform.localScale.Inverse();
+            parentScale = transform.parent.lossyScale;
+            if (autoScalingMode != AutoScalingMode.Transform)
+            {
+                if (_isScaleStored)
+                {
+                    transform.localScale = _storedScale;
+                }
+
+                _isScaleStored = false;
+                return;
+            }
+
+            var currentScale = transform.localScale;
+            _storedScale = currentScale;
+            _isScaleStored = true;
+            _tracker.Add(this, rectTransform, DrivenTransformProperties.Scale);
+            var newScale = parentScale.Inverse();
+            if (currentScale != newScale)
+            {
+                transform.localScale = newScale;
+            }
+        }
+
+        internal void UpdateRenderers()
+        {
+            if (!isActiveAndEnabled) return;
+
+            for (var i = 0; i < _renderers.Count; i++)
+            {
+                var r = _renderers[i];
+                if (!r)
+                {
+                    RefreshParticles(particles);
+                    break;
+                }
+            }
+
+            var bakeCamera = GetBakeCamera();
+            for (var i = 0; i < _renderers.Count; i++)
+            {
+                var r = _renderers[i];
+                if (!r) continue;
+                r.UpdateMesh(bakeCamera);
+            }
+        }
+
+        internal void ResetGroupId()
+        {
+            _groupId = m_GroupId == m_GroupMaxId
+                ? m_GroupId
+                : 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) continue;
+                r.maskable = maskable;
+                r.SetMaterialDirty();
+            }
+        }
+
+        internal UIParticleRenderer GetRenderer(int index)
+        {
+            if (_renderers.Count <= index)
+            {
+                _renderers.Add(UIParticleRenderer.AddRenderer(this, index));
+            }
+
+            if (!_renderers[index])
+            {
+                _renderers[index] = UIParticleRenderer.AddRenderer(this, index);
+            }
+
+            return _renderers[index];
+        }
+
+        private Camera GetBakeCamera()
+        {
+            if (!canvas) return Camera.main;
+
+            // When render mode is ScreenSpaceCamera or WorldSpace, use world camera.
+            var root = canvas.rootCanvas;
+            if (root.renderMode != RenderMode.ScreenSpaceOverlay)
+            {
+                return root.worldCamera ? root.worldCamera : Camera.main;
+            }
+
+            // When render mode is ScreenSpaceOverlay, use ortho-camera.
+            if (!_orthoCamera)
+            {
+                // Find existing ortho-camera.
+                foreach (Transform child in transform)
+                {
+                    var cam = child.GetComponent<Camera>();
+                    if (cam && cam.name == "[generated] UIParticleOverlayCamera")
+                    {
+                        _orthoCamera = cam;
+                        break;
+                    }
+                }
+
+                // Create ortho-camera.
+                if (!_orthoCamera)
+                {
+                    var go = new GameObject("[generated] UIParticleOverlayCamera")
+                    {
+                        hideFlags = HideFlags.HideAndDontSave
+                    };
+                    go.SetActive(false);
+                    go.transform.SetParent(transform, false);
+                    _orthoCamera = go.AddComponent<Camera>();
+                    _orthoCamera.enabled = false;
+                }
+            }
+
+            //
+            var size = ((RectTransform)root.transform).rect.size;
+            _orthoCamera.orthographicSize = Mathf.Max(size.x, size.y) * root.scaleFactor;
+            _orthoCamera.transform.SetPositionAndRotation(new Vector3(0, 0, -1000), Quaternion.identity);
+            _orthoCamera.orthographic = true;
+            _orthoCamera.farClipPlane = 2000f;
+            _orthoCamera.clearFlags = CameraClearFlags.Nothing;
+            _orthoCamera.cullingMask = 0; // Nothing
+            _orthoCamera.allowHDR = false;
+            _orthoCamera.allowMSAA = false;
+            _orthoCamera.renderingPath = RenderingPath.Forward;
+            _orthoCamera.useOcclusionCulling = false;
+
+            return _orthoCamera;
+        }
+    }
+}

Packages/src/Runtime/UIParticle.cs.meta

@@ -4,8 +4,8 @@ MonoImporter:
   externalObjects: {}
   serializedVersion: 2
   defaultReferences: []
-  executionOrder: -100
-  icon: {instanceID: 0}
+  executionOrder: 0
+  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
   userData: 
   assetBundleName: 
   assetBundleVariant: 

Packages/src/Runtime/UIParticleAttractor.cs

@@ -0,0 +1,262 @@
+using System;
+using Coffee.UIParticleExtensions;
+using UnityEngine;
+using UnityEngine.Events;
+
+namespace Coffee.UIExtensions
+{
+    [ExecuteAlways]
+    public class UIParticleAttractor : MonoBehaviour
+    {
+        public enum Movement
+        {
+            Linear,
+            Smooth,
+            Sphere
+        }
+
+        public enum UpdateMode
+        {
+            Normal,
+            UnscaledTime
+        }
+
+        [SerializeField]
+        private ParticleSystem m_ParticleSystem;
+
+        [Range(0.1f, 10f)]
+        [SerializeField]
+        private float m_DestinationRadius = 1;
+
+        [Range(0f, 0.95f)]
+        [SerializeField]
+        private float m_DelayRate;
+
+        [Range(0.001f, 100f)]
+        [SerializeField]
+        private float m_MaxSpeed = 1;
+
+        [SerializeField]
+        private Movement m_Movement;
+
+        [SerializeField]
+        private UpdateMode m_UpdateMode;
+
+        [SerializeField]
+        private UnityEvent m_OnAttracted;
+
+        private UIParticle _uiParticle;
+
+        public float destinationRadius
+        {
+            get => m_DestinationRadius;
+            set => m_DestinationRadius = Mathf.Clamp(value, 0.1f, 10f);
+        }
+
+        public float delay
+        {
+            get => m_DelayRate;
+            set => m_DelayRate = value;
+        }
+
+        public float maxSpeed
+        {
+            get => m_MaxSpeed;
+            set => m_MaxSpeed = value;
+        }
+
+        public Movement movement
+        {
+            get => m_Movement;
+            set => m_Movement = value;
+        }
+
+        public UpdateMode updateMode
+        {
+            get => m_UpdateMode;
+            set => m_UpdateMode = value;
+        }
+
+        public UnityEvent onAttracted
+        {
+            get => m_OnAttracted;
+            set => m_OnAttracted = value;
+        }
+
+        /// <summary>
+        /// The target ParticleSystem to attract.
+        /// </summary>
+#if UNITY_EDITOR
+        public new ParticleSystem particleSystem
+#else
+        public ParticleSystem particleSystem
+#endif
+        {
+            get => m_ParticleSystem;
+            set
+            {
+                m_ParticleSystem = value;
+                ApplyParticleSystem();
+            }
+        }
+
+        private void OnEnable()
+        {
+            ApplyParticleSystem();
+            UIParticleUpdater.Register(this);
+        }
+
+        private void OnDisable()
+        {
+            UIParticleUpdater.Unregister(this);
+        }
+
+        private void OnDestroy()
+        {
+            _uiParticle = null;
+            m_ParticleSystem = null;
+        }
+
+        internal void Attract()
+        {
+            if (m_ParticleSystem == null) return;
+
+            var count = m_ParticleSystem.particleCount;
+            if (count == 0) return;
+
+            var particles = ParticleSystemExtensions.GetParticleArray(count);
+            m_ParticleSystem.GetParticles(particles, count);
+
+            var dstPos = GetDestinationPosition();
+            for (var i = 0; i < count; i++)
+            {
+                // Attracted
+                var p = particles[i];
+                if (0f < p.remainingLifetime && Vector3.Distance(p.position, dstPos) < m_DestinationRadius)
+                {
+                    p.remainingLifetime = 0f;
+                    particles[i] = p;
+
+                    if (m_OnAttracted != null)
+                    {
+                        try
+                        {
+                            m_OnAttracted.Invoke();
+                        }
+                        catch (Exception e)
+                        {
+                            Debug.LogException(e);
+                        }
+                    }
+
+                    continue;
+                }
+
+                // Calc attracting time
+                var delayTime = p.startLifetime * m_DelayRate;
+                var duration = p.startLifetime - delayTime;
+                var time = Mathf.Max(0, p.startLifetime - p.remainingLifetime - delayTime);
+
+                // Delay
+                if (time <= 0) continue;
+
+                // Attract
+                p.position = GetAttractedPosition(p.position, dstPos, duration, time);
+                p.velocity *= 0.5f;
+                particles[i] = p;
+            }
+
+            m_ParticleSystem.SetParticles(particles, count);
+        }
+
+        private Vector3 GetDestinationPosition()
+        {
+            var isUI = _uiParticle && _uiParticle.enabled;
+            var psPos = m_ParticleSystem.transform.position;
+            var attractorPos = transform.position;
+            var dstPos = attractorPos;
+            var isLocalSpace = m_ParticleSystem.IsLocalSpace();
+
+            if (isLocalSpace)
+            {
+                dstPos = m_ParticleSystem.transform.InverseTransformPoint(dstPos);
+            }
+
+            if (isUI)
+            {
+                var inverseScale = _uiParticle.parentScale.Inverse();
+                var scale3d = _uiParticle.scale3DForCalc;
+                dstPos = dstPos.GetScaled(inverseScale, scale3d.Inverse());
+
+                // Relative mode
+                if (_uiParticle.positionMode == UIParticle.PositionMode.Relative)
+                {
+                    var diff = _uiParticle.transform.position - psPos;
+                    diff.Scale(scale3d - inverseScale);
+                    diff.Scale(scale3d.Inverse());
+                    dstPos += diff;
+                }
+
+#if UNITY_EDITOR
+                if (!Application.isPlaying && !isLocalSpace)
+                {
+                    dstPos += psPos - psPos.GetScaled(inverseScale, scale3d.Inverse());
+                }
+#endif
+            }
+
+            return dstPos;
+        }
+
+        private Vector3 GetAttractedPosition(Vector3 current, Vector3 target, float duration, float time)
+        {
+            var speed = m_MaxSpeed;
+            switch (m_UpdateMode)
+            {
+                case UpdateMode.Normal:
+                    speed *= 60 * Time.deltaTime;
+                    break;
+                case UpdateMode.UnscaledTime:
+                    speed *= 60 * Time.unscaledDeltaTime;
+                    break;
+            }
+
+            switch (m_Movement)
+            {
+                case Movement.Linear:
+                    speed /= duration;
+                    break;
+                case Movement.Smooth:
+                    target = Vector3.Lerp(current, target, time / duration);
+                    break;
+                case Movement.Sphere:
+                    target = Vector3.Slerp(current, target, time / duration);
+                    break;
+            }
+
+            return Vector3.MoveTowards(current, target, speed);
+        }
+
+        private void ApplyParticleSystem()
+        {
+            _uiParticle = null;
+            if (m_ParticleSystem == null)
+            {
+#if UNITY_EDITOR
+                if (Application.isPlaying)
+#endif
+                {
+                    Debug.LogError("No particle system attached to particle attractor script", this);
+                }
+
+                return;
+            }
+
+            _uiParticle = m_ParticleSystem.GetComponentInParent<UIParticle>(true);
+            if (_uiParticle && !_uiParticle.particles.Contains(m_ParticleSystem))
+            {
+                _uiParticle = null;
+            }
+        }
+    }
+}