Optimize shaders

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>
2026-04-21 17:40:21 +02:00
parent 37e0814483
commit 9564096a5c
40 changed files with 678 additions and 1442 deletions
@@ -6,3 +6,4 @@
 - Added `Shiny` widget with shader-driven holographic effects.
 - Added optional `ShinyController` and `SensorTiltController` motion APIs.
 - Added package example app and baseline tests.
+- Replaced the monolithic shader with specialized profile shaders and a profile-based API.
@@ -14,8 +14,7 @@ It exposes two widget layers:
 - Position-driven rendering: visuals respond to tilt/input position with no internal time animation
 - Generic wrapper API for any widget via `Shiny(child: ...)`
 - Card API with `background`, `foreground`, `shape`, and drag tilt via `ShinyCard`
- Built-in sparkle presets including `none` (default), 8-point star, 5-point star, rectangle, diamond, hexagon, random polygon, and confetti
- Custom sparkle shapes via parameterized `SparkleShapeSpec` factories
+- Four specialized material profiles backed by dedicated shader assets
 - Global shader opacity control via `opacity`
 - Cross-platform Flutter support (mobile, web, desktop)

@@ -62,7 +61,7 @@ ShinyCard(
  controller: controller,
  background: Container(color: const Color(0xFF1B2D4B)),
  foreground: const Center(child: Text('HOLO')),
-  sparkleShape: SparkleShapeSpec.none,
+  profile: ShinyProfile.crackedIce,
  opacity: 1.0,
 )
 ```
@@ -78,37 +77,17 @@ Shiny(
 )
 ```

-## Sparkle Shapes
+## Profiles

-Use built-in sparkle presets:
+Choose a precompiled material profile:

 ```dart
 ShinyCard(
-  sparkleShape: SparkleShapeSpec.none,
+  profile: ShinyProfile.holographicSilver,
 )

 ShinyCard(
-  sparkleShape: SparkleShapeSpec.hexagon,
-)
-```
-
-Or create your own parameterized shapes:
-
-```dart
-ShinyCard(
-  sparkleShape: SparkleShapeSpec.customStar(
-    points: 7,
-    innerRatio: 0.36,
-  ),
-)
-
-Shiny(
-  sparkleShape: SparkleShapeSpec.customPolygon(
-    sides: 8,
-    aspectRatio: 1.2,
-    rotation: 0.2,
-  ),
-  child: const SizedBox(width: 240, height: 120),
+  profile: ShinyProfile.superGoldVinyl,
 )
 ```

@@ -123,13 +102,13 @@ final ShinyController controller = ShinyController(tiltStream: input.stream);

 - `Shiny`: generic effect wrapper
 - `ShinyCard`: shape + rotation + composition convenience widget
- `SparkleShapeSpec`: built-in and custom sparkle silhouette configuration
+- `ShinyProfile`: specialized material presets mapped to dedicated shader assets
 - `ShinyController`: optional source selection for tilt
 - `SensorTiltController`: low-level sensor fusion stream utility

 Important defaults:

- `sparkleShape` defaults to `SparkleShapeSpec.none` (no sparkles)
+- `profile` defaults to `ShinyProfile.crackedIce`
 - `opacity` defaults to `1.0`

 ## Platform Notes
@@ -147,8 +126,7 @@ See the package example app in `example/` for:
 - Sensor-driven motion
 - External stream override
 - Custom card shape/background/foreground composition
- Built-in sparkle shape toggles in the demo UI
- User-defined sparkle shape presets using `SparkleShapeSpec`
+- Profile switching in the demo UI

 ## Publishing Notes

@@ -1,14 +0,0 @@
-gradle-wrapper.jar
-/.gradle
-/captures/
-/gradlew
-/gradlew.bat
-/local.properties
-GeneratedPluginRegistrant.java
-.cxx/
-
-# Remember to never publicly share your keystore.
-# See https://flutter.dev/to/reference-keystore
-key.properties
-**/*.keystore
-**/*.jks
@@ -1,44 +0,0 @@
-plugins {
-    id("com.android.application")
-    id("kotlin-android")
-    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
-    id("dev.flutter.flutter-gradle-plugin")
-}
-
-android {
-    namespace = "com.example.holo_shiny"
-    compileSdk = flutter.compileSdkVersion
-    ndkVersion = flutter.ndkVersion
-
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_17
-        targetCompatibility = JavaVersion.VERSION_17
-    }
-
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17.toString()
-    }
-
-    defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId = "com.example.holo_shiny"
-        // You can update the following values to match your application needs.
-        // For more information, see: https://flutter.dev/to/review-gradle-config.
-        minSdk = flutter.minSdkVersion
-        targetSdk = flutter.targetSdkVersion
-        versionCode = flutter.versionCode
-        versionName = flutter.versionName
-    }
-
-    buildTypes {
-        release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig = signingConfigs.getByName("debug")
-        }
-    }
-}
-
-flutter {
-    source = "../.."
-}
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <!-- The INTERNET permission is required for development. Specifically,
-         the Flutter tool needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
@@ -1,45 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <application
-        android:label="holo_shiny"
-        android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
-        <activity
-            android:name=".MainActivity"
-            android:exported="true"
-            android:launchMode="singleTop"
-            android:taskAffinity=""
-            android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-            android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
-            <!-- Specifies an Android theme to apply to this Activity as soon as
-                 the Android process has started. This theme is visible to the user
-                 while the Flutter UI initializes. After that, this theme continues
-                 to determine the Window background behind the Flutter UI. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.NormalTheme"
-              android:resource="@style/NormalTheme"
-              />
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
-        <!-- Don't delete the meta-data below.
-             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
-        <meta-data
-            android:name="flutterEmbedding"
-            android:value="2" />
-    </application>
-    <!-- Required to query activities that can process text, see:
-         https://developer.android.com/training/package-visibility and
-         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
-
-         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
-    <queries>
-        <intent>
-            <action android:name="android.intent.action.PROCESS_TEXT"/>
-            <data android:mimeType="text/plain"/>
-        </intent>
-    </queries>
-</manifest>
@@ -1,5 +0,0 @@
-package com.example.holo_shiny
-
-import io.flutter.embedding.android.FlutterActivity
-
-class MainActivity : FlutterActivity()
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="?android:colorBackground" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             the Flutter engine draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-    <!-- Theme applied to the Android Window as soon as the process has started.
-         This theme determines the color of the Android Window while your
-         Flutter UI initializes, as well as behind your Flutter UI while its
-         running.
-
-         This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <item name="android:windowBackground">?android:colorBackground</item>
-    </style>
-</resources>
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             the Flutter engine draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-    <!-- Theme applied to the Android Window as soon as the process has started.
-         This theme determines the color of the Android Window while your
-         Flutter UI initializes, as well as behind your Flutter UI while its
-         running.
-
-         This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
-        <item name="android:windowBackground">?android:colorBackground</item>
-    </style>
-</resources>
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <!-- The INTERNET permission is required for development. Specifically,
-         the Flutter tool needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
@@ -1,24 +0,0 @@
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-val newBuildDir: Directory =
-    rootProject.layout.buildDirectory
-        .dir("../../build")
-        .get()
-rootProject.layout.buildDirectory.value(newBuildDir)
-
-subprojects {
-    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
-    project.layout.buildDirectory.value(newSubprojectBuildDir)
-}
-subprojects {
-    project.evaluationDependsOn(":app")
-}
-
-tasks.register<Delete>("clean") {
-    delete(rootProject.layout.buildDirectory)
-}
@@ -1,2 +0,0 @@
-org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
-android.useAndroidX=true
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-all.zip
@@ -1,26 +0,0 @@
-pluginManagement {
-    val flutterSdkPath =
-        run {
-            val properties = java.util.Properties()
-            file("local.properties").inputStream().use { properties.load(it) }
-            val flutterSdkPath = properties.getProperty("flutter.sdk")
-            require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
-            flutterSdkPath
-        }
-
-    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
-
-    repositories {
-        google()
-        mavenCentral()
-        gradlePluginPortal()
-    }
-}
-
-plugins {
-    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
-    id("com.android.application") version "8.11.1" apply false
-    id("org.jetbrains.kotlin.android") version "2.2.20" apply false
-}
-
-include(":app")
@@ -30,13 +30,8 @@ class ExampleHome extends StatefulWidget {
 }

 class _ExampleHomeState extends State<ExampleHome> {
-  /// Sensor-driven controller used by the first two demo surfaces.
  late final ShinyController _sensorController;
-
-  /// Manual stream used by tilt preset buttons.
  late final StreamController<Offset> _externalTiltController;
-
-  /// Controller backed by [_externalTiltController].
  late final ShinyController _overrideController;

  double _prismatic = 0.8;
@@ -44,20 +39,7 @@ class _ExampleHomeState extends State<ExampleHome> {
  double _specular = 0.8;
  double _diffraction = 0.8;
  double _opacity = 1.0;
-  HolographStyle _style = HolographStyle.crackedIce;
-  SparkleShapeSpec _sparkleShape = SparkleShapeSpec.none;
-
-  static const Map<String, SparkleShapeSpec> _sparkleChoices =
-      <String, SparkleShapeSpec>{
-    'None': SparkleShapeSpec.none,
-    '8-Point Star': SparkleShapeSpec.eightPointStar,
-    '5-Point Star': SparkleShapeSpec.fivePointStar,
-    'Rectangle': SparkleShapeSpec.rectangle,
-    'Diamond': SparkleShapeSpec.diamond,
-    'Hexagon': SparkleShapeSpec.hexagon,
-    'Random Polygon': SparkleShapeSpec.randomPolygon,
-    'Confetti': SparkleShapeSpec.confetti,
-  };
+  ShinyProfile _profile = ShinyProfile.crackedIce;

  @override
  void initState() {
@@ -95,13 +77,12 @@ class _ExampleHomeState extends State<ExampleHome> {
                height: 120,
                child: Shiny(
                  controller: _sensorController,
-                  style: _style,
+                  profile: _profile,
                  prismatic: _prismatic,
                  sparkle: _sparkle,
                  specular: _specular,
                  diffraction: _diffraction,
                  opacity: _opacity,
-                  sparkleShape: _sparkleShape,
                  child: Container(
                    padding: const EdgeInsets.all(16),
                    decoration: BoxDecoration(
@@ -130,8 +111,7 @@ class _ExampleHomeState extends State<ExampleHome> {
            Center(
              child: ShinyCard(
                controller: _sensorController,
-                style: _style,
-                sparkleShape: _sparkleShape,
+                profile: _profile,
                background: const _DemoCardBackground(),
                foreground: const _RareBadge(),
                prismatic: _prismatic,
@@ -143,20 +123,10 @@ class _ExampleHomeState extends State<ExampleHome> {
            ),
            const SizedBox(height: 16),
            _StylePicker(
-              selectedStyle: _style,
-              onChanged: (HolographStyle style) {
+              selectedProfile: _profile,
+              onChanged: (ShinyProfile profile) {
                setState(() {
-                  _style = style;
-                });
-              },
-            ),
-            const SizedBox(height: 8),
-            _SparkleShapePicker(
-              selectedShape: _sparkleShape,
-              choices: _sparkleChoices,
-              onChanged: (SparkleShapeSpec shape) {
-                setState(() {
-                  _sparkleShape = shape;
+                  _profile = profile;
                });
              },
            ),
@@ -198,8 +168,7 @@ class _ExampleHomeState extends State<ExampleHome> {
            Center(
              child: ShinyCard(
                controller: _overrideController,
-                style: _style,
-                sparkleShape: _sparkleShape,
+                profile: _profile,
                prismatic: _prismatic,
                sparkle: _sparkle,
                specular: _specular,
@@ -258,31 +227,30 @@ class _LabeledSlider extends StatelessWidget {
 }

 class _StylePicker extends StatelessWidget {
-  /// Creates the style selection control.
  const _StylePicker({
-    required this.selectedStyle,
+    required this.selectedProfile,
    required this.onChanged,
  });

-  final HolographStyle selectedStyle;
-  final ValueChanged<HolographStyle> onChanged;
+  final ShinyProfile selectedProfile;
+  final ValueChanged<ShinyProfile> onChanged;

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: <Widget>[
-        const Text('Style'),
+        const Text('Profile'),
        const SizedBox(height: 6),
-        SegmentedButton<HolographStyle>(
-          segments: HolographStyle.values
-              .map((HolographStyle style) => ButtonSegment<HolographStyle>(
-                    value: style,
-                    label: Text(_styleLabel(style)),
+        SegmentedButton<ShinyProfile>(
+          segments: ShinyProfile.values
+              .map((ShinyProfile profile) => ButtonSegment<ShinyProfile>(
+                    value: profile,
+                    label: Text(_profileLabel(profile)),
                  ))
              .toList(),
-          selected: <HolographStyle>{selectedStyle},
-          onSelectionChanged: (Set<HolographStyle> value) {
+          selected: <ShinyProfile>{selectedProfile},
+          onSelectionChanged: (Set<ShinyProfile> value) {
            if (value.isNotEmpty) {
              onChanged(value.first);
            }
@@ -294,61 +262,20 @@ class _StylePicker extends StatelessWidget {
    );
  }

-  String _styleLabel(HolographStyle style) {
-    switch (style) {
-      case HolographStyle.holographicSilver:
+  String _profileLabel(ShinyProfile profile) {
+    switch (profile) {
+      case ShinyProfile.holographicSilver:
        return 'Holographic Silver';
-      case HolographStyle.crackedIce:
+      case ShinyProfile.crackedIce:
        return 'Cracked Ice';
-      case HolographStyle.silverMosaic:
+      case ShinyProfile.silverMosaic:
        return 'Silver Mosaic';
-      case HolographStyle.superGoldVinyl:
+      case ShinyProfile.superGoldVinyl:
        return 'Super Gold Vinyl';
    }
  }
 }

-class _SparkleShapePicker extends StatelessWidget {
-  /// Creates sparkle shape chips from the provided shape map.
-  const _SparkleShapePicker({
-    required this.selectedShape,
-    required this.choices,
-    required this.onChanged,
-  });
-
-  final SparkleShapeSpec selectedShape;
-  final Map<String, SparkleShapeSpec> choices;
-  final ValueChanged<SparkleShapeSpec> onChanged;
-
-  @override
-  Widget build(BuildContext context) {
-    return Column(
-      crossAxisAlignment: CrossAxisAlignment.start,
-      children: <Widget>[
-        const Text('Sparkle Shape'),
-        const SizedBox(height: 6),
-        Wrap(
-          spacing: 8,
-          runSpacing: 8,
-          children:
-              choices.entries.map((MapEntry<String, SparkleShapeSpec> entry) {
-            return ChoiceChip(
-              label: Text(entry.key),
-              selected: selectedShape == entry.value,
-              onSelected: (bool selected) {
-                if (!selected) {
-                  return;
-                }
-                onChanged(entry.value);
-              },
-            );
-          }).toList(),
-        ),
-      ],
-    );
-  }
-}
-
 /// Circular D-pad control for feeding the external tilt stream.
 class _TiltPresetPicker extends StatelessWidget {
  const _TiltPresetPicker({required this.onChanged});
@@ -1 +0,0 @@
-flutter/ephemeral
@@ -1,128 +0,0 @@
-# Project-level configuration.
-cmake_minimum_required(VERSION 3.13)
-project(runner LANGUAGES CXX)
-
-# The name of the executable created for the application. Change this to change
-# the on-disk name of your application.
-set(BINARY_NAME "holo_shiny_example")
-# The unique GTK application identifier for this application. See:
-# https://wiki.gnome.org/HowDoI/ChooseApplicationID
-set(APPLICATION_ID "com.example.holo_shiny_example")
-
-# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
-# versions of CMake.
-cmake_policy(SET CMP0063 NEW)
-
-# Load bundled libraries from the lib/ directory relative to the binary.
-set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
-
-# Root filesystem for cross-building.
-if(FLUTTER_TARGET_PLATFORM_SYSROOT)
-  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
-  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
-  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
-  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-endif()
-
-# Define build configuration options.
-if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-  set(CMAKE_BUILD_TYPE "Debug" CACHE
-    STRING "Flutter build mode" FORCE)
-  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
-    "Debug" "Profile" "Release")
-endif()
-
-# Compilation settings that should be applied to most targets.
-#
-# Be cautious about adding new options here, as plugins use this function by
-# default. In most cases, you should add new options to specific targets instead
-# of modifying this function.
-function(APPLY_STANDARD_SETTINGS TARGET)
-  target_compile_features(${TARGET} PUBLIC cxx_std_14)
-  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
-  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
-  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
-endfunction()
-
-# Flutter library and tool build rules.
-set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
-add_subdirectory(${FLUTTER_MANAGED_DIR})
-
-# System-level dependencies.
-find_package(PkgConfig REQUIRED)
-pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
-
-# Application build; see runner/CMakeLists.txt.
-add_subdirectory("runner")
-
-# Run the Flutter tool portions of the build. This must not be removed.
-add_dependencies(${BINARY_NAME} flutter_assemble)
-
-# Only the install-generated bundle's copy of the executable will launch
-# correctly, since the resources must in the right relative locations. To avoid
-# people trying to run the unbundled copy, put it in a subdirectory instead of
-# the default top-level location.
-set_target_properties(${BINARY_NAME}
-  PROPERTIES
-  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
-)
-
-
-# Generated plugin build rules, which manage building the plugins and adding
-# them to the application.
-include(flutter/generated_plugins.cmake)
-
-
-# === Installation ===
-# By default, "installing" just makes a relocatable bundle in the build
-# directory.
-set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
-endif()
-
-# Start with a clean build bundle directory every time.
-install(CODE "
-  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
-  " COMPONENT Runtime)
-
-set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
-set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
-
-install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
-  COMPONENT Runtime)
-
-install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
-  COMPONENT Runtime)
-
-install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
-  COMPONENT Runtime)
-
-foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
-  install(FILES "${bundled_library}"
-    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
-    COMPONENT Runtime)
-endforeach(bundled_library)
-
-# Copy the native assets provided by the build.dart from all packages.
-set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
-install(DIRECTORY "${NATIVE_ASSETS_DIR}"
-   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
-   COMPONENT Runtime)
-
-# Fully re-copy the assets directory on each build to avoid having stale files
-# from a previous install.
-set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
-install(CODE "
-  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
-  " COMPONENT Runtime)
-install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
-  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
-
-# Install the AOT library on non-Debug builds only.
-if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
-  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
-    COMPONENT Runtime)
-endif()
@@ -1,88 +0,0 @@
-# This file controls Flutter-level build steps. It should not be edited.
-cmake_minimum_required(VERSION 3.10)
-
-set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
-
-# Configuration provided via flutter tool.
-include(${EPHEMERAL_DIR}/generated_config.cmake)
-
-# TODO: Move the rest of this into files in ephemeral. See
-# https://github.com/flutter/flutter/issues/57146.
-
-# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
-# which isn't available in 3.10.
-function(list_prepend LIST_NAME PREFIX)
-    set(NEW_LIST "")
-    foreach(element ${${LIST_NAME}})
-        list(APPEND NEW_LIST "${PREFIX}${element}")
-    endforeach(element)
-    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
-endfunction()
-
-# === Flutter Library ===
-# System-level dependencies.
-find_package(PkgConfig REQUIRED)
-pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
-pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
-pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
-
-set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
-
-# Published to parent scope for install step.
-set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
-set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
-set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
-set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
-
-list(APPEND FLUTTER_LIBRARY_HEADERS
-  "fl_basic_message_channel.h"
-  "fl_binary_codec.h"
-  "fl_binary_messenger.h"
-  "fl_dart_project.h"
-  "fl_engine.h"
-  "fl_json_message_codec.h"
-  "fl_json_method_codec.h"
-  "fl_message_codec.h"
-  "fl_method_call.h"
-  "fl_method_channel.h"
-  "fl_method_codec.h"
-  "fl_method_response.h"
-  "fl_plugin_registrar.h"
-  "fl_plugin_registry.h"
-  "fl_standard_message_codec.h"
-  "fl_standard_method_codec.h"
-  "fl_string_codec.h"
-  "fl_value.h"
-  "fl_view.h"
-  "flutter_linux.h"
-)
-list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
-add_library(flutter INTERFACE)
-target_include_directories(flutter INTERFACE
-  "${EPHEMERAL_DIR}"
-)
-target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
-target_link_libraries(flutter INTERFACE
-  PkgConfig::GTK
-  PkgConfig::GLIB
-  PkgConfig::GIO
-)
-add_dependencies(flutter flutter_assemble)
-
-# === Flutter tool backend ===
-# _phony_ is a non-existent file to force this command to run every time,
-# since currently there's no way to get a full input/output list from the
-# flutter tool.
-add_custom_command(
-  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
-    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
-  COMMAND ${CMAKE_COMMAND} -E env
-    ${FLUTTER_TOOL_ENVIRONMENT}
-    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
-      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
-  VERBATIM
-)
-add_custom_target(flutter_assemble DEPENDS
-  "${FLUTTER_LIBRARY}"
-  ${FLUTTER_LIBRARY_HEADERS}
-)
@@ -1,11 +0,0 @@
-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#include "generated_plugin_registrant.h"
-
-
-void fl_register_plugins(FlPluginRegistry* registry) {
-}
@@ -1,15 +0,0 @@
-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#ifndef GENERATED_PLUGIN_REGISTRANT_
-#define GENERATED_PLUGIN_REGISTRANT_
-
-#include <flutter_linux/flutter_linux.h>
-
-// Registers Flutter plugins.
-void fl_register_plugins(FlPluginRegistry* registry);
-
-#endif  // GENERATED_PLUGIN_REGISTRANT_
@@ -1,23 +0,0 @@
-#
-# Generated file, do not edit.
-#
-
-list(APPEND FLUTTER_PLUGIN_LIST
-)
-
-list(APPEND FLUTTER_FFI_PLUGIN_LIST
-)
-
-set(PLUGIN_BUNDLED_LIBRARIES)
-
-foreach(plugin ${FLUTTER_PLUGIN_LIST})
-  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
-  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
-endforeach(plugin)
-
-foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
-  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
-endforeach(ffi_plugin)
@@ -1,26 +0,0 @@
-cmake_minimum_required(VERSION 3.13)
-project(runner LANGUAGES CXX)
-
-# Define the application target. To change its name, change BINARY_NAME in the
-# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
-# work.
-#
-# Any new source files that you add to the application should be added here.
-add_executable(${BINARY_NAME}
-  "main.cc"
-  "my_application.cc"
-  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
-)
-
-# Apply the standard set of build settings. This can be removed for applications
-# that need different build settings.
-apply_standard_settings(${BINARY_NAME})
-
-# Add preprocessor definitions for the application ID.
-add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
-
-# Add dependency libraries. Add any application-specific dependencies here.
-target_link_libraries(${BINARY_NAME} PRIVATE flutter)
-target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
-
-target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
@@ -1,6 +0,0 @@
-#include "my_application.h"
-
-int main(int argc, char** argv) {
-  g_autoptr(MyApplication) app = my_application_new();
-  return g_application_run(G_APPLICATION(app), argc, argv);
-}
@@ -1,148 +0,0 @@
-#include "my_application.h"
-
-#include <flutter_linux/flutter_linux.h>
-#ifdef GDK_WINDOWING_X11
-#include <gdk/gdkx.h>
-#endif
-
-#include "flutter/generated_plugin_registrant.h"
-
-struct _MyApplication {
-  GtkApplication parent_instance;
-  char** dart_entrypoint_arguments;
-};
-
-G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
-
-// Called when first Flutter frame received.
-static void first_frame_cb(MyApplication* self, FlView* view) {
-  gtk_widget_show(gtk_widget_get_toplevel(GTK_WIDGET(view)));
-}
-
-// Implements GApplication::activate.
-static void my_application_activate(GApplication* application) {
-  MyApplication* self = MY_APPLICATION(application);
-  GtkWindow* window =
-      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
-
-  // Use a header bar when running in GNOME as this is the common style used
-  // by applications and is the setup most users will be using (e.g. Ubuntu
-  // desktop).
-  // If running on X and not using GNOME then just use a traditional title bar
-  // in case the window manager does more exotic layout, e.g. tiling.
-  // If running on Wayland assume the header bar will work (may need changing
-  // if future cases occur).
-  gboolean use_header_bar = TRUE;
-#ifdef GDK_WINDOWING_X11
-  GdkScreen* screen = gtk_window_get_screen(window);
-  if (GDK_IS_X11_SCREEN(screen)) {
-    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
-    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
-      use_header_bar = FALSE;
-    }
-  }
-#endif
-  if (use_header_bar) {
-    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
-    gtk_widget_show(GTK_WIDGET(header_bar));
-    gtk_header_bar_set_title(header_bar, "holo_shiny_example");
-    gtk_header_bar_set_show_close_button(header_bar, TRUE);
-    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
-  } else {
-    gtk_window_set_title(window, "holo_shiny_example");
-  }
-
-  gtk_window_set_default_size(window, 1280, 720);
-
-  g_autoptr(FlDartProject) project = fl_dart_project_new();
-  fl_dart_project_set_dart_entrypoint_arguments(
-      project, self->dart_entrypoint_arguments);
-
-  FlView* view = fl_view_new(project);
-  GdkRGBA background_color;
-  // Background defaults to black, override it here if necessary, e.g. #00000000
-  // for transparent.
-  gdk_rgba_parse(&background_color, "#000000");
-  fl_view_set_background_color(view, &background_color);
-  gtk_widget_show(GTK_WIDGET(view));
-  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
-
-  // Show the window when Flutter renders.
-  // Requires the view to be realized so we can start rendering.
-  g_signal_connect_swapped(view, "first-frame", G_CALLBACK(first_frame_cb),
-                           self);
-  gtk_widget_realize(GTK_WIDGET(view));
-
-  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
-
-  gtk_widget_grab_focus(GTK_WIDGET(view));
-}
-
-// Implements GApplication::local_command_line.
-static gboolean my_application_local_command_line(GApplication* application,
-                                                  gchar*** arguments,
-                                                  int* exit_status) {
-  MyApplication* self = MY_APPLICATION(application);
-  // Strip out the first argument as it is the binary name.
-  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
-
-  g_autoptr(GError) error = nullptr;
-  if (!g_application_register(application, nullptr, &error)) {
-    g_warning("Failed to register: %s", error->message);
-    *exit_status = 1;
-    return TRUE;
-  }
-
-  g_application_activate(application);
-  *exit_status = 0;
-
-  return TRUE;
-}
-
-// Implements GApplication::startup.
-static void my_application_startup(GApplication* application) {
-  // MyApplication* self = MY_APPLICATION(object);
-
-  // Perform any actions required at application startup.
-
-  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
-}
-
-// Implements GApplication::shutdown.
-static void my_application_shutdown(GApplication* application) {
-  // MyApplication* self = MY_APPLICATION(object);
-
-  // Perform any actions required at application shutdown.
-
-  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
-}
-
-// Implements GObject::dispose.
-static void my_application_dispose(GObject* object) {
-  MyApplication* self = MY_APPLICATION(object);
-  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
-  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
-}
-
-static void my_application_class_init(MyApplicationClass* klass) {
-  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
-  G_APPLICATION_CLASS(klass)->local_command_line =
-      my_application_local_command_line;
-  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
-  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
-  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
-}
-
-static void my_application_init(MyApplication* self) {}
-
-MyApplication* my_application_new() {
-  // Set the program name to the application ID, which helps various systems
-  // like GTK and desktop environments map this running application to its
-  // corresponding .desktop file. This ensures better integration by allowing
-  // the application to be recognized beyond its binary name.
-  g_set_prgname(APPLICATION_ID);
-
-  return MY_APPLICATION(g_object_new(my_application_get_type(),
-                                     "application-id", APPLICATION_ID, "flags",
-                                     G_APPLICATION_NON_UNIQUE, nullptr));
-}
@@ -1,21 +0,0 @@
-#ifndef FLUTTER_MY_APPLICATION_H_
-#define FLUTTER_MY_APPLICATION_H_
-
-#include <gtk/gtk.h>
-
-G_DECLARE_FINAL_TYPE(MyApplication,
-                     my_application,
-                     MY,
-                     APPLICATION,
-                     GtkApplication)
-
-/**
- * my_application_new:
- *
- * Creates a new Flutter-based application.
- *
- * Returns: a new #MyApplication.
- */
-MyApplication* my_application_new();
-
-#endif  // FLUTTER_MY_APPLICATION_H_
@@ -5,8 +5,8 @@ import 'package:flutter/material.dart';

 import 'shiny_controller.dart';

-/// Available holographic material profiles rendered by the fragment shader.
-enum HolographStyle {
+/// Available holographic material profiles rendered by dedicated shader assets.
+enum ShinyProfile {
  /// Smooth silver foil with soft rainbow flow.
  holographicSilver,

@@ -20,168 +20,20 @@ enum HolographStyle {
  superGoldVinyl,
 }

-/// Sparkle silhouette families used by the shader when drawing glints.
-enum SparkleShapeKind {
-  /// Disables sparkle rendering entirely.
-  none,
-
-  /// Star-shaped sparkle with configurable point count and inner radius.
-  star,
-
-  /// Rectangular sparkle streak.
-  rectangle,
-
-  /// Fixed-side polygon sparkle.
-  polygon,
-
-  /// Randomized polygon sparkle per sparkle cell.
-  randomPolygon,
-
-  /// Confetti-like elongated rectangle with random rotation.
-  confetti,
-}
-
-/// Declarative sparkle shape configuration for [Shiny] and [ShinyCard].
-class SparkleShapeSpec {
-  /// Internal constructor that maps directly to shader uniform values.
-  const SparkleShapeSpec._({
-    required this.kind,
-    required this.primary,
-    required this.secondary,
-    required this.tertiary,
-  });
-
-  /// No sparkle output.
-  static const SparkleShapeSpec none = SparkleShapeSpec._(
-    kind: SparkleShapeKind.none,
-    primary: 0.0,
-    secondary: 0.0,
-    tertiary: 0.0,
-  );
-
-  /// Eight-point star sparkle preset.
-  static const SparkleShapeSpec eightPointStar = SparkleShapeSpec._(
-    kind: SparkleShapeKind.star,
-    primary: 8.0,
-    secondary: 0.42,
-    tertiary: 0.0,
-  );
-
-  /// Five-point star sparkle preset.
-  static const SparkleShapeSpec fivePointStar = SparkleShapeSpec._(
-    kind: SparkleShapeKind.star,
-    primary: 5.0,
-    secondary: 0.42,
-    tertiary: 0.0,
-  );
-
-  /// Rectangular sparkle preset.
-  static const SparkleShapeSpec rectangle = SparkleShapeSpec._(
-    kind: SparkleShapeKind.rectangle,
-    primary: 0.24,
-    secondary: 0.055,
-    tertiary: 1.0,
-  );
-
-  /// Diamond sparkle preset.
-  static const SparkleShapeSpec diamond = SparkleShapeSpec._(
-    kind: SparkleShapeKind.polygon,
-    primary: 4.0,
-    secondary: 1.0,
-    tertiary: 0.78539816339,
-  );
-
-  /// Hexagon sparkle preset.
-  static const SparkleShapeSpec hexagon = SparkleShapeSpec._(
-    kind: SparkleShapeKind.polygon,
-    primary: 6.0,
-    secondary: 1.0,
-    tertiary: 0.0,
-  );
-
-  /// Randomized polygon sparkle preset.
-  static const SparkleShapeSpec randomPolygon = SparkleShapeSpec._(
-    kind: SparkleShapeKind.randomPolygon,
-    primary: 0.0,
-    secondary: 0.0,
-    tertiary: 0.0,
-  );
-
-  /// Confetti sparkle preset.
-  static const SparkleShapeSpec confetti = SparkleShapeSpec._(
-    kind: SparkleShapeKind.confetti,
-    primary: 0.34,
-    secondary: 0.045,
-    tertiary: 1.0,
-  );
-
-  /// Creates a custom star sparkle.
-  ///
-  /// [points] is clamped to `[4, 12]` and [innerRatio] to `[0.15, 0.85]`.
-  factory SparkleShapeSpec.customStar(
-      {int points = 8, double innerRatio = 0.42}) {
-    return SparkleShapeSpec._(
-      kind: SparkleShapeKind.star,
-      primary: points.toDouble().clamp(4.0, 12.0),
-      secondary: innerRatio.clamp(0.15, 0.85),
-      tertiary: 0.0,
-    );
+extension ShinyProfileShaderAsset on ShinyProfile {
+  /// Local shader asset path for the profile.
+  String get shaderAsset {
+    switch (this) {
+      case ShinyProfile.holographicSilver:
+        return 'shaders/shiny_holographic_silver.frag';
+      case ShinyProfile.crackedIce:
+        return 'shaders/shiny_cracked_ice.frag';
+      case ShinyProfile.silverMosaic:
+        return 'shaders/shiny_silver_mosaic.frag';
+      case ShinyProfile.superGoldVinyl:
+        return 'shaders/shiny_super_gold_vinyl.frag';
    }
-
-  /// Creates a custom polygon sparkle.
-  ///
-  /// [sides] is clamped to `[3, 10]` and [aspectRatio] to `[0.4, 2.0]`.
-  factory SparkleShapeSpec.customPolygon(
-      {int sides = 6, double aspectRatio = 1.0, double rotation = 0.0}) {
-    return SparkleShapeSpec._(
-      kind: SparkleShapeKind.polygon,
-      primary: sides.toDouble().clamp(3.0, 10.0),
-      secondary: aspectRatio.clamp(0.4, 2.0),
-      tertiary: rotation,
-    );
  }
-
-  /// Creates a custom rectangular sparkle.
-  ///
-  /// Values are clamped to keep shapes visible and numerically stable.
-  factory SparkleShapeSpec.customRectangle(
-      {double halfWidth = 0.24,
-      double halfHeight = 0.055,
-      double rotationJitter = 1.0}) {
-    return SparkleShapeSpec._(
-      kind: SparkleShapeKind.rectangle,
-      primary: halfWidth.clamp(0.05, 0.45),
-      secondary: halfHeight.clamp(0.02, 0.30),
-      tertiary: rotationJitter.clamp(0.0, 1.0),
-    );
-  }
-
-  /// Creates a custom confetti sparkle.
-  ///
-  /// Values are clamped to keep geometry inside the sparkle cell.
-  factory SparkleShapeSpec.customConfetti(
-      {double length = 0.34,
-      double thickness = 0.045,
-      double rotationJitter = 1.0}) {
-    return SparkleShapeSpec._(
-      kind: SparkleShapeKind.confetti,
-      primary: length.clamp(0.08, 0.48),
-      secondary: thickness.clamp(0.01, 0.14),
-      tertiary: rotationJitter.clamp(0.0, 1.0),
-    );
-  }
-
-  /// Sparkle family used by the shader.
-  final SparkleShapeKind kind;
-
-  /// Shape parameter 1. Meaning depends on [kind].
-  final double primary;
-
-  /// Shape parameter 2. Meaning depends on [kind].
-  final double secondary;
-
-  /// Shape parameter 3. Meaning depends on [kind].
-  final double tertiary;
 }

 /// Applies holographic shader lighting to any child widget.
@@ -197,8 +49,7 @@ class Shiny extends StatefulWidget {
    this.specular = 0.8,
    this.diffraction = 0.8,
    this.opacity = 1.0,
-    this.sparkleShape = SparkleShapeSpec.none,
-    this.style = HolographStyle.crackedIce,
+    this.profile = ShinyProfile.crackedIce,
    this.blendMode = BlendMode.screen,
    this.enableShader = true,
  });
@@ -227,11 +78,8 @@ class Shiny extends StatefulWidget {
  /// Global shader opacity multiplier.
  final double opacity;

-  /// Sparkle silhouette specification.
-  final SparkleShapeSpec sparkleShape;
-
  /// Foil style preset.
-  final HolographStyle style;
+  final ShinyProfile profile;

  /// Blend mode applied by [ShaderMask].
  final BlendMode blendMode;
@@ -244,7 +92,8 @@ class Shiny extends StatefulWidget {
 }

 class _ShinyState extends State<Shiny> {
-  static Future<ui.FragmentProgram>? _programFuture;
+  static final Map<ShinyProfile, Future<ui.FragmentProgram>> _programFutures =
+      <ShinyProfile, Future<ui.FragmentProgram>>{};

  ui.FragmentShader? _shader;
  StreamSubscription<Offset>? _tiltSub;
@@ -269,30 +118,43 @@ class _ShinyState extends State<Shiny> {
    }
    if (oldWidget.enableShader != widget.enableShader) {
      if (widget.enableShader) {
-        if (_shader == null) _loadShader();
+        _loadShader();
+      } else {
+        _shader?.dispose();
+        _shader = null;
      }
    }
+    if (oldWidget.profile != widget.profile && widget.enableShader) {
+      _loadShader();
+    }
  }

  Future<void> _loadShader() async {
+    final ShinyProfile profile = widget.profile;
    try {
-      _programFuture ??= _loadProgram();
-      final ui.FragmentProgram program = await _programFuture!;
-      if (!mounted) return;
+      final Future<ui.FragmentProgram> future =
+          _programFutures.putIfAbsent(profile, () => _loadProgram(profile));
+      final ui.FragmentProgram program = await future;
+      if (!mounted || !widget.enableShader || widget.profile != profile) {
+        return;
+      }
+      final ui.FragmentShader shader = program.fragmentShader();
      setState(() {
-        _shader = program.fragmentShader();
+        _shader?.dispose();
+        _shader = shader;
      });
    } catch (_) {
      // Keep rendering without shader when runtime effects are unavailable.
    }
  }

-  Future<ui.FragmentProgram> _loadProgram() async {
+  Future<ui.FragmentProgram> _loadProgram(ShinyProfile profile) async {
+    final String localAsset = profile.shaderAsset;
    try {
-      return await ui.FragmentProgram.fromAsset('shaders/shiny_card.frag');
+      return await ui.FragmentProgram.fromAsset(localAsset);
    } catch (_) {
      return await ui.FragmentProgram.fromAsset(
-          'packages/holo_shiny/shaders/shiny_card.frag');
+          'packages/holo_shiny/$localAsset');
    }
  }

@@ -331,12 +193,7 @@ class _ShinyState extends State<Shiny> {
      ..setFloat(5, widget.sparkle)
      ..setFloat(6, widget.specular)
      ..setFloat(7, widget.diffraction)
-      ..setFloat(8, widget.style.index.toDouble())
-      ..setFloat(9, widget.sparkleShape.kind.index.toDouble())
-      ..setFloat(10, widget.sparkleShape.primary)
-      ..setFloat(11, widget.sparkleShape.secondary)
-      ..setFloat(12, widget.sparkleShape.tertiary)
-      ..setFloat(13, widget.opacity);
+      ..setFloat(8, widget.opacity);
    return shader;
  }

@@ -372,8 +229,7 @@ class ShinyCard extends StatefulWidget {
    this.specular = 0.8,
    this.diffraction = 0.8,
    this.opacity = 1.0,
-    this.sparkleShape = SparkleShapeSpec.none,
-    this.style = HolographStyle.crackedIce,
+    this.profile = ShinyProfile.crackedIce,
    this.enableShader = true,
  });

@@ -410,11 +266,8 @@ class ShinyCard extends StatefulWidget {
  /// Global shader opacity multiplier.
  final double opacity;

-  /// Sparkle silhouette specification.
-  final SparkleShapeSpec sparkleShape;
-
  /// Foil style preset.
-  final HolographStyle style;
+  final ShinyProfile profile;

  /// Toggles shader execution.
  final bool enableShader;
@@ -550,8 +403,7 @@ class _ShinyCardState extends State<ShinyCard>
              specular: widget.specular,
              diffraction: widget.diffraction,
              opacity: widget.opacity,
-              sparkleShape: widget.sparkleShape,
-              style: widget.style,
+              profile: widget.profile,
              child: base,
            ),
            if (widget.foreground != null) widget.foreground!,
@@ -23,4 +23,7 @@ dev_dependencies:

 flutter:
  shaders:
-    - shaders/shiny_card.frag
+    - shaders/shiny_holographic_silver.frag
+    - shaders/shiny_cracked_ice.frag
+    - shaders/shiny_silver_mosaic.frag
+    - shaders/shiny_super_gold_vinyl.frag
@@ -1,382 +0,0 @@
-#version 460 core
-#include <flutter/runtime_effect.glsl>
-
-out vec4 fragColor;
-
-uniform vec2 uSize;
-uniform vec2 uTilt;
-uniform float uPrismatic;
-uniform float uSparkle;
-uniform float uSpecular;
-uniform float uDiffraction;
-uniform float uStyle;
-uniform float uSparkleShapeKind;
-uniform float uSparklePrimary;
-uniform float uSparkleSecondary;
-uniform float uSparkleTertiary;
-uniform float uOpacity;
-
-#define TWO_PI 6.28318530718
-
-// Precomputed rotation matrices reduce repeated sin/cos work in tiled layers.
-#define ROT_0_78  mat2( 0.71091,  0.70328, -0.70328,  0.71091)
-#define ROT_M0_5  mat2( 0.87758, -0.47943,  0.47943,  0.87758)
-#define ROT_1_2   mat2( 0.36236,  0.93204, -0.93204,  0.36236)
-
-float hash(vec2 p) {
-  vec3 p3 = fract(vec3(p.xyx) * 0.1031);
-  p3 += dot(p3, p3.yzx + 33.33);
-  return fract((p3.x + p3.y) * p3.z);
-}
-
-float noise(vec2 p) {
-  vec2 i = floor(p);
-  vec2 f = fract(p);
-  vec2 u = f * f * (3.0 - 2.0 * f);
-
-  float a = hash(i);
-  float b = hash(i + vec2(1.0, 0.0));
-  float c = hash(i + vec2(0.0, 1.0));
-  float d = hash(i + vec2(1.0, 1.0));
-
-  return mix(mix(a, b, u.x), mix(c, d, u.x), u.y);
-}
-
-vec3 hsv2rgb(float h, float s, float v) {
-  vec3 k = vec3(1.0, 2.0 / 3.0, 1.0 / 3.0);
-  vec3 p = abs(fract(vec3(h) + k) * 6.0 - 3.0);
-  return v * mix(vec3(1.0), clamp(p - 1.0, 0.0, 1.0), s);
-}
-
-vec3 rainbow(float phase, float saturation, float value) {
-  return hsv2rgb(fract(phase), saturation, value);
-}
-
-float sdBox(vec2 p, vec2 b) {
-  vec2 d = abs(p) - b;
-  return length(max(d, 0.0)) + min(max(d.x, d.y), 0.0);
-}
-
-float sdRegularPolygon(vec2 p, float sides, float radius) {
-  float angle = atan(p.y, p.x);
-  float sector = TWO_PI / sides;
-  return cos(floor(0.5 + angle / sector) * sector - angle) * length(p) - radius;
-}
-
-float sparkleStarMask(vec2 p, float points, float innerRatio) {
-  float angle = atan(p.y, p.x);
-  float radius = dot(p, p);
-  float spikes = 0.5 + 0.5 * cos(angle * points);
-  float starRadius = mix(0.34 * innerRatio, 0.34, pow(spikes, 1.4));
-  return smoothstep(0.0009, -0.0009, radius - (starRadius * starRadius));
-}
-
-vec2 rotatePoint(vec2 p, float rotation) {
-  float c = cos(rotation);
-  float s = sin(rotation);
-  return vec2(c * p.x - s * p.y, s * p.x + c * p.y);
-}
-
-float sparkleRectangleMask(vec2 p, float halfWidth, float halfHeight, float rotation) {
-  vec2 q = rotatePoint(p, rotation);
-  float body = sdBox(q, vec2(halfWidth, halfHeight));
-  float bevel = sdBox(q, vec2(halfWidth * 0.78, halfHeight * 0.78));
-  float bodyMask = smoothstep(0.03, -0.03, body);
-
-  float centerLine = 1.0 - smoothstep(0.0, halfHeight * 1.25, abs(q.y));
-  float endFade = 1.0 - smoothstep(halfWidth * 0.55, halfWidth * 1.05, abs(q.x));
-  float streak = centerLine * endFade;
-  float bevelRing = smoothstep(0.025, -0.025, body) - smoothstep(0.025, -0.025, bevel);
-  return clamp(bodyMask * (0.58 + 0.42 * streak) + bevelRing * 0.25, 0.0, 1.0);
-}
-
-float sparklePolygonMask(vec2 p, float sides, float aspectRatio, float rotation) {
-  vec2 q = rotatePoint(p, rotation);
-  q.x /= aspectRatio;
-  float poly = sdRegularPolygon(q, sides, 0.26);
-  return smoothstep(0.03, -0.03, poly);
-}
-
-float sparkleShapeMask(vec2 p, vec2 id) {
-  float randomRotation = hash(id + 5.1) * TWO_PI;
-  if (uSparkleShapeKind < 0.5) {
-    return 0.0;
-  }
-  if (uSparkleShapeKind < 1.5) {
-    return sparkleStarMask(p, uSparklePrimary, uSparkleSecondary);
-  }
-  if (uSparkleShapeKind < 2.5) {
-    return sparkleRectangleMask(p, uSparklePrimary, uSparkleSecondary, randomRotation * uSparkleTertiary);
-  }
-  if (uSparkleShapeKind < 3.5) {
-    return sparklePolygonMask(p, uSparklePrimary, uSparkleSecondary, uSparkleTertiary);
-  }
-  if (uSparkleShapeKind < 4.5) {
-    float sides = 5.0 + floor(hash(id + 9.4) * 4.0);
-    float aspect = 0.7 + hash(id + 13.1) * 0.7;
-    return sparklePolygonMask(p, sides, aspect, randomRotation);
-  }
-  return sparkleRectangleMask(p, uSparklePrimary, uSparkleSecondary, randomRotation * uSparkleTertiary);
-}
-
-vec3 styleHolographicSilver(vec2 uv, vec2 tilt) {
-  vec2 p = uv * 2.0 - 1.0;
-  vec2 tiltWarp = tilt * 0.18;
-  float flowA = noise(uv * 3.5 + tiltWarp + vec2(dot(uv, vec2(0.25, -0.22))));
-  float flowB = noise(uv * 7.0 - tiltWarp + vec2(dot(uv, vec2(-0.18, 0.21))));
-  vec2 warp = p + 0.25 * vec2(flowA - 0.5, flowB - 0.5);
-  float ribbon = sin(dot(warp, vec2(6.5, 2.8)) + flowA * 5.0 + dot(tilt, vec2(2.2, -1.7)));
-  float plume = sin(length(warp + vec2(flowB - 0.5, flowA - 0.5)) * 9.0 - tilt.x * 3.0 + dot(uv, vec2(1.5, -1.2)));
-  float phase = flowA * 1.8 + ribbon * 0.28 + plume * 0.22;
-  
-  vec3 holo = rainbow(phase, 0.72, 1.0);
-  float blend = smoothstep(-0.65, 0.95, ribbon + plume * 0.55);
-  vec3 silver = vec3(0.62, 0.65, 0.70) * (0.85 + 0.15 * flowB);
-  
-  return mix(silver, holo, 0.65 * blend);
-}
-
-vec3 styleCrackedIce(vec2 uv, vec2 tilt) {
-  float maxZ = -999.0;
-  vec2 bestSlope = vec2(0.0);
-  float bestHash = 0.0;
-  float bestEdge = 1.0;
-
-  vec2 warp = vec2(sin(uv.y * 10.0), cos(uv.x * 10.0)) * 0.05;
-  vec2 baseUV = uv + warp;
-
-  // --- LAYER 1 ---
-  vec2 p1 = baseUV * 12.0;
-  vec2 id1 = floor(p1);
-  vec2 f1 = fract(p1) - 0.5;
-  vec2 slope1 = vec2(hash(id1 + 1.2), hash(id1 + 1.3)) * 2.0 - 1.0;
-  float z1 = dot(f1, slope1) * 3.5;
-  if (z1 > maxZ) {
-    maxZ = z1; bestSlope = slope1; bestHash = hash(id1 + 1.1); bestEdge = min(0.5 - abs(f1.x), 0.5 - abs(f1.y));
-  }
-
-  // --- LAYER 2 (Optimized Rotation) ---
-  vec2 p2 = (ROT_0_78 * baseUV) * 15.0; 
-  vec2 id2 = floor(p2);
-  vec2 f2 = fract(p2) - 0.5;
-  vec2 slope2 = vec2(hash(id2 + 2.2), hash(id2 + 2.3)) * 2.0 - 1.0;
-  float z2 = 0.8 + dot(f2, slope2) * 3.5; 
-  if (z2 > maxZ) {
-    maxZ = z2; bestSlope = slope2; bestHash = hash(id2 + 2.1); bestEdge = min(0.5 - abs(f2.x), 0.5 - abs(f2.y));
-  }
-
-  // --- LAYER 3 (Optimized Rotation) ---
-  vec2 p3 = (ROT_M0_5 * baseUV) * 18.0; 
-  vec2 id3 = floor(p3);
-  vec2 f3 = fract(p3) - 0.5;
-  vec2 slope3 = vec2(hash(id3 + 3.2), hash(id3 + 3.3)) * 2.0 - 1.0;
-  float z3 = 1.6 + dot(f3, slope3) * 3.5;
-  if (z3 > maxZ) {
-    maxZ = z3; bestSlope = slope3; bestHash = hash(id3 + 3.1); bestEdge = min(0.5 - abs(f3.x), 0.5 - abs(f3.y));
-  }
-
-  // --- LAYER 4 (Optimized Rotation) ---
-  vec2 p4 = (ROT_1_2 * baseUV) * 21.0;
-  vec2 id4 = floor(p4);
-  vec2 f4 = fract(p4) - 0.5;
-  vec2 slope4 = vec2(hash(id4 + 4.2), hash(id4 + 4.3)) * 2.0 - 1.0;
-  float z4 = 2.4 + dot(f4, slope4) * 3.5;
-  if (z4 > maxZ) {
-    maxZ = z4; bestSlope = slope4; bestHash = hash(id4 + 4.1); bestEdge = min(0.5 - abs(f4.x), 0.5 - abs(f4.y));
-  }
-
-  // --- VIBRANT COLOR OPTICS ---
-  float alignment = dot(tilt, normalize(bestSlope + vec2(0.001)));
-  float phase = dot(uv, vec2(0.6, -0.4)) + bestHash * 0.6 + alignment * 0.5;
-  float saturation = 0.7 + 0.3 * hash(vec2(bestHash, 6.1));
-  vec3 baseColor = rainbow(phase, saturation, 1.0);
-
-  float lightCycle = sin(alignment * 4.0 + bestHash * TWO_PI + dot(uv, vec2(2.1, -1.7)));
-  float ambient = 0.15 + 0.25 * max(0.0, lightCycle);
-  vec3 finalColor = baseColor * ambient;
-  float flash = pow(max(0.0, lightCycle), 5.0);
-  finalColor += mix(baseColor, vec3(1.0, 0.95, 0.85), 0.6) * flash * 0.55;
-  finalColor += baseColor * smoothstep(0.05, 0.0, bestEdge) * flash * 0.4;
-
-  return finalColor;
-}
-
-vec3 styleSilverMosaic(vec2 uv, vec2 tilt) {
-  // Mosaic tile grid.
-  vec2 g = uv * 6.0;
-  vec2 id = floor(g);
-  
-  // Center local tile coordinates for radial optics.
-  vec2 f = fract(g) - 0.5;
-
-  // Real foil sheets often alternate the grain of the squares to catch light from all angles.
-  if (mod(id.x + id.y, 2.0) > 0.5) {
-      f = vec2(-f.y, f.x); 
-  }
-
-  vec2 radialDir = normalize(f + vec2(0.0001)); 
-
-  vec2 lightDir = normalize(tilt + vec2(0.001));
-
-  // Radial highlight where tile direction aligns with light direction.
-  float alignment = abs(dot(radialDir, lightDir));
-  
-  float highlight = pow(alignment, 12.0); 
-
-  float angleDiff = acos(alignment); 
-  
-  // 2D cross product sign decides which side of the highlight receives hue shift.
-  float side = sign(radialDir.x * lightDir.y - radialDir.y * lightDir.x);
-  
-  float basePhase = length(tilt) * 2.5 + dot(uv, vec2(0.9, -0.7));
-  
-  float phase = basePhase + side * angleDiff * 1.8;
-  vec3 holoColor = rainbow(phase, 0.85, 1.0);
-
-  // White specular core appears when alignment is nearly perfect.
-  vec3 core = vec3(1.0) * smoothstep(0.98, 1.0, alignment);
-
-  vec3 foilBase = vec3(0.25, 0.27, 0.30);
-
-  vec3 finalColor = foilBase + (holoColor * highlight * 1.5) + (core * 0.8);
-
-  // Tile borders and edge darkening add perceived depth.
-  float edgeX = 0.5 - abs(f.x);
-  float edgeY = 0.5 - abs(f.y);
-  
-  float border = smoothstep(0.0, 0.015, min(edgeX, edgeY));
-
-  float dist = length(f);
-  finalColor *= mix(0.7, 1.0, 1.0 - smoothstep(0.0, 0.5, dist) * 0.3);
-
-  return clamp(finalColor * border, 0.0, 1.0);
-}
-
-vec3 styleSuperGoldVinyl(vec2 uv, vec2 tilt) {
-  vec2 g = uv * 60.0;
-  vec2 staggered = vec2(g.x + 0.5 * mod(floor(g.y), 2.0), g.y);
-  vec2 f = fract(staggered) - 0.5;
-  
-  // Distance-squared masks avoid square roots and preserve circular dots.
-  float d2 = dot(f, f); 
-  float dotMask = smoothstep(0.1764, 0.01, d2);
-  float emboss = smoothstep(0.2025, 0.0324, d2);
-  
-  float sheen = 0.5 + 0.5 * sin(dot(uv, vec2(18.0, -6.0)) + noise(uv * 6.0) * 2.5 + dot(tilt, vec2(2.4, 1.8)) * 2.0);
-  vec3 gold = vec3(0.84, 0.70, 0.24);
-  vec3 warm = vec3(1.0, 0.88, 0.42);
-  vec3 shadow = vec3(0.18, 0.14, 0.05);
-  
-  return gold * (0.75 + 0.25 * sheen) + warm * dotMask * 0.28 + shadow * emboss * 0.08;
-}
-
-void main() {
-  // UVs in [0, 1] for global lighting and center-based effects.
-  vec2 uv = FlutterFragCoord().xy / uSize;
-  vec2 center = vec2(0.5, 0.5);
-  vec2 fromCenter = uv - center;
-
-  // Aspect-corrected UVs keep grids and sparkles physically proportional.
-  float maxDim = max(uSize.x, uSize.y);
-  vec2 aspectUV = FlutterFragCoord().xy / maxDim;
-
-  float tiltMag = length(uTilt);
-  float safeTiltMag = max(tiltMag, 0.001);
-  vec2 tiltDir = uTilt / safeTiltMag;
-
-  // Highlight uses stretched UVs so glare spans the full widget area.
-  float highlightDistance = length(uv - (center + (uTilt * 0.35)));
-
-  bool isHolographicSilver = uStyle < 0.5;
-  bool isCrackedIce = uStyle >= 0.5 && uStyle < 1.5;
-  bool isSilverMosaic = uStyle >= 1.5 && uStyle < 2.5;
-
-  float specularSharpness = isHolographicSilver ? 3.0 : (isCrackedIce ? 4.0 : (isSilverMosaic ? 3.4 : 3.6));
-  float specularMask = pow(max(0.0, 1.0 - highlightDistance * 2.6), specularSharpness);
-
-  float prismaticGain = isHolographicSilver ? 1.10 : (isCrackedIce ? 1.00 : (isSilverMosaic ? 1.30 : 1.18));
-  float sparkleGain = isHolographicSilver ? 1.00 : (isCrackedIce ? 0.70 : (isSilverMosaic ? 0.80 : 0.70));
-  float specularGain = isHolographicSilver ? 1.00 : (isCrackedIce ? 1.65 : (isSilverMosaic ? 1.15 : 1.50));
-  float prismaticTintGain = isHolographicSilver ? 1.00 : (isCrackedIce ? 0.90 : (isSilverMosaic ? 1.15 : 0.65));
-
-  float sparkleGridScale = isCrackedIce ? 7.0 : (isSilverMosaic ? 14.0 : 18.0);
-  
-  // Sparkle grid uses aspect-corrected coordinates to avoid stretching.
-  vec2 sparkleGrid = aspectUV * sparkleGridScale;
-  vec2 grid = floor(sparkleGrid);
-  
-  float rarityThreshold = isCrackedIce ? 0.965 : (isSilverMosaic ? 0.88 : 0.83);
-  float rarity = step(rarityThreshold, hash(grid + 0.31));
-  
-  vec3 sparkle = vec3(0.0);
-  if (rarity > 0.0) {
-    vec2 cell = fract(sparkleGrid) - 0.5;
-    float sparkleHash = hash(grid);
-    vec2 sparkleNormal = normalize(vec2(sparkleHash * 2.0 - 1.0, hash(grid + 19.7) * 2.0 - 1.0));
-    float alignment = max(0.0, dot(tiltDir, sparkleNormal));
-    
-    if (alignment > 0.0) {
-      float twinkle = 0.45 + 0.55 * sin(dot(cell, vec2(21.0, -17.0)) + dot(uTilt, vec2(5.3, -4.1)) + sparkleHash * TWO_PI);
-      float shapeMask = 0.0;
-      
-      if (isCrackedIce) {
-        float sides = 5.0 + floor(hash(grid + 9.4) * 4.0);
-        float aspect = 0.75 + hash(grid + 13.1) * 0.55;
-        shapeMask = sparklePolygonMask(cell, sides, aspect, hash(grid + 5.1) * TWO_PI);
-      } else {
-        shapeMask = sparkleShapeMask(cell, grid);
-      }
-      
-      float sparklePower = isCrackedIce ? 4.8 : (isSilverMosaic ? 3.8 : 3.2);
-      float sparkleIntensity = isCrackedIce ? 0.25 : (isSilverMosaic ? 0.55 : 1.0);
-      float sparkleChroma = isCrackedIce ? 0.20 : 0.35;
-      float sparkleMask = pow(alignment, sparklePower) * twinkle * rarity * shapeMask;
-      vec3 sparkleColor = mix(vec3(1.0), rainbow(sparkleHash + dot(uTilt, vec2(0.2, -0.15)), 0.55, 1.0), sparkleChroma);
-      sparkle = sparkleColor * sparkleMask * uSparkle * sparkleIntensity * sparkleGain;
-    }
-  }
-
-  vec3 styleBase;
-  // Style bases sample aspect-corrected UVs for stable pattern geometry.
-  if (uStyle < 0.5) {
-    styleBase = styleHolographicSilver(aspectUV, uTilt);
-  } else if (uStyle < 1.5) {
-    styleBase = styleCrackedIce(aspectUV, uTilt);
-  } else if (uStyle < 2.5) {
-    styleBase = styleSilverMosaic(aspectUV, uTilt);
-  } else {
-    styleBase = styleSuperGoldVinyl(aspectUV, uTilt);
-  }
-
-  float styleLuma = dot(styleBase, vec3(0.299, 0.587, 0.114));
-  vec3 chromaAdjusted = mix(vec3(styleLuma), styleBase, 0.2 + 0.8 * uPrismatic);
-
-  // Directional lighting uses center-relative UVs for broad foil gradients.
-  vec2 normal2d = normalize(fromCenter + vec2(0.001));
-  float directional = 0.5 + 0.5 * dot(normal2d, tiltDir);
-  float tiltLighting = mix(0.86, 1.20, pow(directional, 1.2));
-  chromaAdjusted *= tiltLighting;
-
-  float edgeSpec = pow(1.0 - directional, 2.2);
-  vec3 specular = vec3(specularMask) * (0.3 + 0.7 * edgeSpec) * uSpecular * (0.35 + 0.65 * tiltMag) * specularGain;
-
-  float prismaticPhase = dot(aspectUV, vec2(3.6, -2.1)) + dot(uTilt, vec2(0.9, -0.7));
-  vec3 prismaticTint = rainbow(prismaticPhase, 0.72, 1.0) * uPrismatic * prismaticGain * prismaticTintGain * (0.08 + 0.14 * edgeSpec);
-  
-  float microStrength = isCrackedIce ? 0.08 : 0.18;
-  
-  // Micro diffraction uses aspect-corrected UVs to keep grain isotropic.
-  float microMask = 0.5 + 0.5 * sin(dot(aspectUV, vec2(137.0, 57.0)) + noise(aspectUV * 14.0) * 4.0 + dot(uTilt, vec2(9.0, 4.0)) * 2.0);
-  vec3 microShimmer = rainbow(noise(aspectUV * 10.0) + dot(uTilt, vec2(0.4, -0.3)) * 0.3, 0.65, 1.0) * microMask * uDiffraction * microStrength;
-  
-  vec3 styleColor = chromaAdjusted + microShimmer + prismaticTint + (specular * 0.22) + sparkle;
-  vec3 mappedColor = styleColor / (1.0 + styleColor * 0.3);
-  float luma = dot(mappedColor, vec3(0.299, 0.587, 0.114));
-  vec3 vibrantColor = mix(vec3(luma), mappedColor, 1.4); 
-  
-  float foilBrightness = dot(vibrantColor, vec3(0.333));
-  float alpha = clamp(foilBrightness * 0.5, 0.0, 0.35) * clamp(uOpacity, 0.0, 1.0);
-  vec3 finalColor = clamp(vibrantColor, 0.0, 1.0);
-
-  fragColor = vec4(finalColor * alpha, alpha);
-}
@@ -0,0 +1,192 @@
+#version 460 core
+#include <flutter/runtime_effect.glsl>
+
+out vec4 fragColor;
+
+uniform vec2 uSize;
+uniform vec2 uTilt;
+uniform float uPrismatic;
+uniform float uSparkle;
+uniform float uSpecular;
+uniform float uDiffraction;
+uniform float uOpacity;
+
+#define TWO_PI 6.28318530718
+#define ROT_0_78 mat2(0.71091, 0.70328, -0.70328, 0.71091)
+#define ROT_M0_5 mat2(0.87758, -0.47943, 0.47943, 0.87758)
+#define ROT_1_2 mat2(0.36236, 0.93204, -0.93204, 0.36236)
+
+float hash(vec2 p) {
+  vec3 p3 = fract(vec3(p.xyx) * 0.1031);
+  p3 += dot(p3, p3.yzx + 33.33);
+  return fract((p3.x + p3.y) * p3.z);
+}
+
+float noise(vec2 p) {
+  vec2 i = floor(p);
+  vec2 f = fract(p);
+  vec2 u = f * f * (3.0 - 2.0 * f);
+  float a = hash(i);
+  float b = hash(i + vec2(1.0, 0.0));
+  float c = hash(i + vec2(0.0, 1.0));
+  float d = hash(i + vec2(1.0, 1.0));
+  return mix(mix(a, b, u.x), mix(c, d, u.x), u.y);
+}
+
+vec3 hsv2rgb(float h, float s, float v) {
+  vec3 k = vec3(1.0, 2.0 / 3.0, 1.0 / 3.0);
+  vec3 p = abs(fract(vec3(h) + k) * 6.0 - 3.0);
+  return v * mix(vec3(1.0), clamp(p - 1.0, 0.0, 1.0), s);
+}
+
+vec3 rainbow(float phase, float saturation, float value) {
+  return hsv2rgb(fract(phase), saturation, value);
+}
+
+vec2 safeNormalize(vec2 p) {
+  return p * inversesqrt(max(dot(p, p), 0.000001));
+}
+
+float sdRegularPolygon(vec2 p, float sides, float radius) {
+  float angle = atan(p.y, p.x);
+  float sector = TWO_PI / sides;
+  return cos(floor(0.5 + angle / sector) * sector - angle) * length(p) - radius;
+}
+
+float sparklePolygonMask(vec2 p, float sides, float aspectRatio, float rotation) {
+  float c = cos(rotation);
+  float s = sin(rotation);
+  vec2 q = vec2(c * p.x - s * p.y, s * p.x + c * p.y);
+  q.x /= aspectRatio;
+  float poly = sdRegularPolygon(q, sides, 0.26);
+  return smoothstep(0.03, -0.03, poly);
+}
+
+vec3 styleBase(vec2 uv, vec2 tilt) {
+  float maxZ = -999.0;
+  vec2 bestSlope = vec2(0.0);
+  float bestHash = 0.0;
+  float bestEdge = 1.0;
+
+  vec2 warp = vec2(sin(uv.y * 10.0), cos(uv.x * 10.0)) * 0.05;
+  vec2 baseUV = uv + warp;
+
+  vec2 p1 = baseUV * 12.0;
+  vec2 id1 = floor(p1);
+  vec2 f1 = fract(p1) - 0.5;
+  vec2 slope1 = vec2(hash(id1 + 1.2), hash(id1 + 1.3)) * 2.0 - 1.0;
+  float z1 = dot(f1, slope1) * 3.5;
+  float edge1 = min(0.5 - abs(f1.x), 0.5 - abs(f1.y));
+  float hash1 = hash(id1 + 1.1);
+  float use1 = step(maxZ, z1);
+  maxZ = mix(maxZ, z1, use1);
+  bestSlope = mix(bestSlope, slope1, use1);
+  bestHash = mix(bestHash, hash1, use1);
+  bestEdge = mix(bestEdge, edge1, use1);
+
+  vec2 p2 = (ROT_0_78 * baseUV) * 15.0;
+  vec2 id2 = floor(p2);
+  vec2 f2 = fract(p2) - 0.5;
+  vec2 slope2 = vec2(hash(id2 + 2.2), hash(id2 + 2.3)) * 2.0 - 1.0;
+  float z2 = 0.8 + dot(f2, slope2) * 3.5;
+  float edge2 = min(0.5 - abs(f2.x), 0.5 - abs(f2.y));
+  float hash2 = hash(id2 + 2.1);
+  float use2 = step(maxZ, z2);
+  maxZ = mix(maxZ, z2, use2);
+  bestSlope = mix(bestSlope, slope2, use2);
+  bestHash = mix(bestHash, hash2, use2);
+  bestEdge = mix(bestEdge, edge2, use2);
+
+  vec2 p3 = (ROT_M0_5 * baseUV) * 18.0;
+  vec2 id3 = floor(p3);
+  vec2 f3 = fract(p3) - 0.5;
+  vec2 slope3 = vec2(hash(id3 + 3.2), hash(id3 + 3.3)) * 2.0 - 1.0;
+  float z3 = 1.6 + dot(f3, slope3) * 3.5;
+  float edge3 = min(0.5 - abs(f3.x), 0.5 - abs(f3.y));
+  float hash3 = hash(id3 + 3.1);
+  float use3 = step(maxZ, z3);
+  maxZ = mix(maxZ, z3, use3);
+  bestSlope = mix(bestSlope, slope3, use3);
+  bestHash = mix(bestHash, hash3, use3);
+  bestEdge = mix(bestEdge, edge3, use3);
+
+  vec2 p4 = (ROT_1_2 * baseUV) * 21.0;
+  vec2 id4 = floor(p4);
+  vec2 f4 = fract(p4) - 0.5;
+  vec2 slope4 = vec2(hash(id4 + 4.2), hash(id4 + 4.3)) * 2.0 - 1.0;
+  float z4 = 2.4 + dot(f4, slope4) * 3.5;
+  float edge4 = min(0.5 - abs(f4.x), 0.5 - abs(f4.y));
+  float hash4 = hash(id4 + 4.1);
+  float use4 = step(maxZ, z4);
+  maxZ = mix(maxZ, z4, use4);
+  bestSlope = mix(bestSlope, slope4, use4);
+  bestHash = mix(bestHash, hash4, use4);
+  bestEdge = mix(bestEdge, edge4, use4);
+
+  float alignment = dot(tilt, safeNormalize(bestSlope + vec2(0.001)));
+  float phase = dot(uv, vec2(0.6, -0.4)) + bestHash * 0.6 + alignment * 0.5;
+  float saturation = 0.7 + 0.3 * hash(vec2(bestHash, 6.1));
+  vec3 baseColor = rainbow(phase, saturation, 1.0);
+  float lightCycle = sin(alignment * 4.0 + bestHash * TWO_PI + dot(uv, vec2(2.1, -1.7)));
+  float ambient = 0.15 + 0.25 * max(0.0, lightCycle);
+  float flash = pow(max(0.0, lightCycle), 5.0);
+  vec3 finalColor = baseColor * ambient;
+  finalColor += mix(baseColor, vec3(1.0, 0.95, 0.85), 0.6) * flash * 0.55;
+  finalColor += baseColor * smoothstep(0.05, 0.0, bestEdge) * flash * 0.4;
+  return finalColor;
+}
+
+vec3 sparkleLayer(vec2 aspectUV, vec2 tilt, vec2 tiltDir) {
+  vec2 sparkleGrid = aspectUV * 7.0;
+  vec2 grid = floor(sparkleGrid);
+  vec2 cell = fract(sparkleGrid) - 0.5;
+  float sparkleHash = hash(grid);
+  vec2 sparkleNormal = safeNormalize(vec2(sparkleHash * 2.0 - 1.0, hash(grid + 19.7) * 2.0 - 1.0));
+  float rarity = step(0.965, hash(grid + 0.31));
+  float alignment = max(0.0, dot(tiltDir, sparkleNormal));
+  float twinkle = 0.45 + 0.55 * sin(dot(cell, vec2(21.0, -17.0)) + dot(tilt, vec2(5.3, -4.1)) + sparkleHash * TWO_PI);
+  float sides = 5.0 + floor(hash(grid + 9.4) * 4.0);
+  float aspect = 0.75 + hash(grid + 13.1) * 0.55;
+  float shapeMask = sparklePolygonMask(cell, sides, aspect, hash(grid + 5.1) * TWO_PI);
+  float sparkleMask = pow(alignment, 4.8) * twinkle * rarity * shapeMask;
+  vec3 sparkleColor = mix(vec3(1.0), rainbow(sparkleHash + dot(tilt, vec2(0.2, -0.15)), 0.55, 1.0), 0.20);
+  return sparkleColor * sparkleMask * uSparkle * 0.25 * 0.70;
+}
+
+void main() {
+  vec2 frag = FlutterFragCoord().xy;
+  vec2 uv = frag / uSize;
+  vec2 fromCenter = uv - vec2(0.5);
+  float maxDim = max(uSize.x, uSize.y);
+  vec2 aspectUV = frag / maxDim;
+  float tiltMag = length(uTilt);
+  vec2 tiltDir = safeNormalize(uTilt + vec2(0.001));
+  float highlightDistance = length(uv - (vec2(0.5) + (uTilt * 0.35)));
+  float specularMask = pow(max(0.0, 1.0 - highlightDistance * 2.6), 4.0);
+
+  vec3 base = styleBase(aspectUV, uTilt);
+  vec3 sparkle = sparkleLayer(aspectUV, uTilt, tiltDir);
+  float baseLuma = dot(base, vec3(0.299, 0.587, 0.114));
+  vec3 chromaAdjusted = mix(vec3(baseLuma), base, 0.2 + 0.8 * uPrismatic);
+
+  vec2 normal2d = safeNormalize(fromCenter + vec2(0.001));
+  float directional = 0.5 + 0.5 * dot(normal2d, tiltDir);
+  float tiltLighting = mix(0.86, 1.20, pow(directional, 1.2));
+  chromaAdjusted *= tiltLighting;
+
+  float edgeSpec = pow(1.0 - directional, 2.2);
+  vec3 specular = vec3(specularMask) * (0.3 + 0.7 * edgeSpec) * uSpecular * (0.35 + 0.65 * tiltMag) * 1.65;
+  float prismaticPhase = dot(aspectUV, vec2(3.6, -2.1)) + dot(uTilt, vec2(0.9, -0.7));
+  vec3 prismaticTint = rainbow(prismaticPhase, 0.72, 1.0) * uPrismatic * 0.90 * (0.08 + 0.14 * edgeSpec);
+  float microMask = 0.5 + 0.5 * sin(dot(aspectUV, vec2(137.0, 57.0)) + noise(aspectUV * 14.0) * 4.0 + dot(uTilt, vec2(9.0, 4.0)) * 2.0);
+  vec3 microShimmer = rainbow(noise(aspectUV * 10.0) + dot(uTilt, vec2(0.4, -0.3)) * 0.3, 0.65, 1.0) * microMask * uDiffraction * 0.08;
+
+  vec3 styleColor = chromaAdjusted + microShimmer + prismaticTint + (specular * 0.22) + sparkle;
+  vec3 mappedColor = styleColor / (1.0 + styleColor * 0.3);
+  float luma = dot(mappedColor, vec3(0.299, 0.587, 0.114));
+  vec3 vibrantColor = mix(vec3(luma), mappedColor, 1.4);
+  float foilBrightness = dot(vibrantColor, vec3(0.333));
+  float alpha = clamp(foilBrightness * 0.5, 0.0, 0.35) * clamp(uOpacity, 0.0, 1.0);
+  vec3 finalColor = clamp(vibrantColor, 0.0, 1.0);
+  fragColor = vec4(finalColor * alpha, alpha);
+}
@@ -0,0 +1,121 @@
+#version 460 core
+#include <flutter/runtime_effect.glsl>
+
+out vec4 fragColor;
+
+uniform vec2 uSize;
+uniform vec2 uTilt;
+uniform float uPrismatic;
+uniform float uSparkle;
+uniform float uSpecular;
+uniform float uDiffraction;
+uniform float uOpacity;
+
+#define TWO_PI 6.28318530718
+
+float hash(vec2 p) {
+  vec3 p3 = fract(vec3(p.xyx) * 0.1031);
+  p3 += dot(p3, p3.yzx + 33.33);
+  return fract((p3.x + p3.y) * p3.z);
+}
+
+float noise(vec2 p) {
+  vec2 i = floor(p);
+  vec2 f = fract(p);
+  vec2 u = f * f * (3.0 - 2.0 * f);
+  float a = hash(i);
+  float b = hash(i + vec2(1.0, 0.0));
+  float c = hash(i + vec2(0.0, 1.0));
+  float d = hash(i + vec2(1.0, 1.0));
+  return mix(mix(a, b, u.x), mix(c, d, u.x), u.y);
+}
+
+vec3 hsv2rgb(float h, float s, float v) {
+  vec3 k = vec3(1.0, 2.0 / 3.0, 1.0 / 3.0);
+  vec3 p = abs(fract(vec3(h) + k) * 6.0 - 3.0);
+  return v * mix(vec3(1.0), clamp(p - 1.0, 0.0, 1.0), s);
+}
+
+vec3 rainbow(float phase, float saturation, float value) {
+  return hsv2rgb(fract(phase), saturation, value);
+}
+
+vec2 safeNormalize(vec2 p) {
+  return p * inversesqrt(max(dot(p, p), 0.000001));
+}
+
+float sparkleStarMask(vec2 p, float points, float innerRatio) {
+  float angle = atan(p.y, p.x);
+  float radius = dot(p, p);
+  float spikes = 0.5 + 0.5 * cos(angle * points);
+  float starRadius = mix(0.34 * innerRatio, 0.34, pow(spikes, 1.4));
+  return smoothstep(0.0009, -0.0009, radius - (starRadius * starRadius));
+}
+
+vec3 styleBase(vec2 uv, vec2 tilt) {
+  vec2 p = uv * 2.0 - 1.0;
+  vec2 tiltWarp = tilt * 0.18;
+  float flowA = noise(uv * 3.5 + tiltWarp + vec2(dot(uv, vec2(0.25, -0.22))));
+  float flowB = noise(uv * 7.0 - tiltWarp + vec2(dot(uv, vec2(-0.18, 0.21))));
+  vec2 warp = p + 0.25 * vec2(flowA - 0.5, flowB - 0.5);
+  float ribbon = sin(dot(warp, vec2(6.5, 2.8)) + flowA * 5.0 + dot(tilt, vec2(2.2, -1.7)));
+  float plume = sin(length(warp + vec2(flowB - 0.5, flowA - 0.5)) * 9.0 - tilt.x * 3.0 + dot(uv, vec2(1.5, -1.2)));
+  float phase = flowA * 1.8 + ribbon * 0.28 + plume * 0.22;
+  vec3 holo = rainbow(phase, 0.72, 1.0);
+  float blend = smoothstep(-0.65, 0.95, ribbon + plume * 0.55);
+  vec3 silver = vec3(0.62, 0.65, 0.70) * (0.85 + 0.15 * flowB);
+  return mix(silver, holo, 0.65 * blend);
+}
+
+vec3 sparkleLayer(vec2 aspectUV, vec2 tilt, vec2 tiltDir) {
+  vec2 sparkleGrid = aspectUV * 18.0;
+  vec2 grid = floor(sparkleGrid);
+  vec2 cell = fract(sparkleGrid) - 0.5;
+  float sparkleHash = hash(grid);
+  vec2 sparkleNormal = safeNormalize(vec2(sparkleHash * 2.0 - 1.0, hash(grid + 19.7) * 2.0 - 1.0));
+  float rarity = step(0.83, hash(grid + 0.31));
+  float alignment = max(0.0, dot(tiltDir, sparkleNormal));
+  float twinkle = 0.45 + 0.55 * sin(dot(cell, vec2(21.0, -17.0)) + dot(tilt, vec2(5.3, -4.1)) + sparkleHash * TWO_PI);
+  float shapeMask = sparkleStarMask(cell, 8.0, 0.42);
+  float sparkleMask = pow(alignment, 3.2) * twinkle * rarity * shapeMask;
+  vec3 sparkleColor = mix(vec3(1.0), rainbow(sparkleHash + dot(tilt, vec2(0.2, -0.15)), 0.55, 1.0), 0.35);
+  return sparkleColor * sparkleMask * uSparkle;
+}
+
+void main() {
+  vec2 frag = FlutterFragCoord().xy;
+  vec2 uv = frag / uSize;
+  vec2 fromCenter = uv - vec2(0.5);
+  float maxDim = max(uSize.x, uSize.y);
+  vec2 aspectUV = frag / maxDim;
+  float tiltMag = length(uTilt);
+  vec2 tiltDir = safeNormalize(uTilt + vec2(0.001));
+  float highlightDistance = length(uv - (vec2(0.5) + (uTilt * 0.35)));
+  float specularMask = pow(max(0.0, 1.0 - highlightDistance * 2.6), 3.0);
+
+  vec3 base = styleBase(aspectUV, uTilt);
+  vec3 sparkle = sparkleLayer(aspectUV, uTilt, tiltDir);
+  float baseLuma = dot(base, vec3(0.299, 0.587, 0.114));
+  vec3 chromaAdjusted = mix(vec3(baseLuma), base, 0.2 + 0.8 * uPrismatic);
+
+  vec2 normal2d = safeNormalize(fromCenter + vec2(0.001));
+  float directional = 0.5 + 0.5 * dot(normal2d, tiltDir);
+  float tiltLighting = mix(0.86, 1.20, pow(directional, 1.2));
+  chromaAdjusted *= tiltLighting;
+
+  float edgeSpec = pow(1.0 - directional, 2.2);
+  vec3 specular = vec3(specularMask) * (0.3 + 0.7 * edgeSpec) * uSpecular * (0.35 + 0.65 * tiltMag);
+  float prismaticPhase = dot(aspectUV, vec2(3.6, -2.1)) + dot(uTilt, vec2(0.9, -0.7));
+  vec3 prismaticTint = rainbow(prismaticPhase, 0.72, 1.0) * uPrismatic * 1.10 * (0.08 + 0.14 * edgeSpec);
+  float microMask = 0.5 + 0.5 * sin(dot(aspectUV, vec2(137.0, 57.0)) + noise(aspectUV * 14.0) * 4.0 + dot(uTilt, vec2(9.0, 4.0)) * 2.0);
+  vec3 microShimmer = rainbow(noise(aspectUV * 10.0) + dot(uTilt, vec2(0.4, -0.3)) * 0.3, 0.65, 1.0) * microMask * uDiffraction * 0.18;
+
+  vec3 styleColor = chromaAdjusted + microShimmer + prismaticTint + (specular * 0.22) + sparkle;
+  vec3 mappedColor = styleColor / (1.0 + styleColor * 0.3);
+  float luma = dot(mappedColor, vec3(0.299, 0.587, 0.114));
+  vec3 vibrantColor = mix(vec3(luma), mappedColor, 1.4);
+  float foilBrightness = dot(vibrantColor, vec3(0.333));
+  float alpha = clamp(foilBrightness * 0.5, 0.0, 0.35) * clamp(uOpacity, 0.0, 1.0);
+  vec3 finalColor = clamp(vibrantColor, 0.0, 1.0);
+  fragColor = vec4(finalColor * alpha, alpha);
+}
@@ -0,0 +1,139 @@
+#version 460 core
+#include <flutter/runtime_effect.glsl>
+
+out vec4 fragColor;
+
+uniform vec2 uSize;
+uniform vec2 uTilt;
+uniform float uPrismatic;
+uniform float uSparkle;
+uniform float uSpecular;
+uniform float uDiffraction;
+uniform float uOpacity;
+
+#define TWO_PI 6.28318530718
+
+float hash(vec2 p) {
+  vec3 p3 = fract(vec3(p.xyx) * 0.1031);
+  p3 += dot(p3, p3.yzx + 33.33);
+  return fract((p3.x + p3.y) * p3.z);
+}
+
+float noise(vec2 p) {
+  vec2 i = floor(p);
+  vec2 f = fract(p);
+  vec2 u = f * f * (3.0 - 2.0 * f);
+  float a = hash(i);
+  float b = hash(i + vec2(1.0, 0.0));
+  float c = hash(i + vec2(0.0, 1.0));
+  float d = hash(i + vec2(1.0, 1.0));
+  return mix(mix(a, b, u.x), mix(c, d, u.x), u.y);
+}
+
+vec3 hsv2rgb(float h, float s, float v) {
+  vec3 k = vec3(1.0, 2.0 / 3.0, 1.0 / 3.0);
+  vec3 p = abs(fract(vec3(h) + k) * 6.0 - 3.0);
+  return v * mix(vec3(1.0), clamp(p - 1.0, 0.0, 1.0), s);
+}
+
+vec3 rainbow(float phase, float saturation, float value) {
+  return hsv2rgb(fract(phase), saturation, value);
+}
+
+vec2 safeNormalize(vec2 p) {
+  return p * inversesqrt(max(dot(p, p), 0.000001));
+}
+
+float sdRegularPolygon(vec2 p, float sides, float radius) {
+  float angle = atan(p.y, p.x);
+  float sector = TWO_PI / sides;
+  return cos(floor(0.5 + angle / sector) * sector - angle) * length(p) - radius;
+}
+
+float sparklePolygonMask(vec2 p, float sides, float aspectRatio, float rotation) {
+  float c = cos(rotation);
+  float s = sin(rotation);
+  vec2 q = vec2(c * p.x - s * p.y, s * p.x + c * p.y);
+  q.x /= aspectRatio;
+  float poly = sdRegularPolygon(q, sides, 0.26);
+  return smoothstep(0.03, -0.03, poly);
+}
+
+vec3 styleBase(vec2 uv, vec2 tilt) {
+  vec2 g = uv * 6.0;
+  vec2 id = floor(g);
+  vec2 f = fract(g) - 0.5;
+  vec2 rotatedF = vec2(-f.y, f.x);
+  f = mix(f, rotatedF, step(0.5, mod(id.x + id.y, 2.0)));
+  vec2 radialDir = safeNormalize(f + vec2(0.0001));
+  vec2 lightDir = safeNormalize(tilt + vec2(0.001));
+  float alignment = abs(dot(radialDir, lightDir));
+  float highlight = pow(alignment, 12.0);
+  float angleDiff = acos(clamp(alignment, 0.0, 1.0));
+  float side = sign(radialDir.x * lightDir.y - radialDir.y * lightDir.x);
+  float basePhase = length(tilt) * 2.5 + dot(uv, vec2(0.9, -0.7));
+  float phase = basePhase + side * angleDiff * 1.8;
+  vec3 holoColor = rainbow(phase, 0.85, 1.0);
+  vec3 core = vec3(1.0) * smoothstep(0.98, 1.0, alignment);
+  vec3 foilBase = vec3(0.25, 0.27, 0.30);
+  vec3 finalColor = foilBase + (holoColor * highlight * 1.5) + (core * 0.8);
+  float edgeX = 0.5 - abs(f.x);
+  float edgeY = 0.5 - abs(f.y);
+  float border = smoothstep(0.0, 0.015, min(edgeX, edgeY));
+  float dist = length(f);
+  finalColor *= mix(0.7, 1.0, 1.0 - smoothstep(0.0, 0.5, dist) * 0.3);
+  return clamp(finalColor * border, 0.0, 1.0);
+}
+
+vec3 sparkleLayer(vec2 aspectUV, vec2 tilt, vec2 tiltDir) {
+  vec2 sparkleGrid = aspectUV * 14.0;
+  vec2 grid = floor(sparkleGrid);
+  vec2 cell = fract(sparkleGrid) - 0.5;
+  float sparkleHash = hash(grid);
+  vec2 sparkleNormal = safeNormalize(vec2(sparkleHash * 2.0 - 1.0, hash(grid + 19.7) * 2.0 - 1.0));
+  float rarity = step(0.88, hash(grid + 0.31));
+  float alignment = max(0.0, dot(tiltDir, sparkleNormal));
+  float twinkle = 0.45 + 0.55 * sin(dot(cell, vec2(21.0, -17.0)) + dot(tilt, vec2(5.3, -4.1)) + sparkleHash * TWO_PI);
+  float shapeMask = sparklePolygonMask(cell, 6.0, 1.0, 0.0);
+  float sparkleMask = pow(alignment, 3.8) * twinkle * rarity * shapeMask;
+  vec3 sparkleColor = mix(vec3(1.0), rainbow(sparkleHash + dot(tilt, vec2(0.2, -0.15)), 0.55, 1.0), 0.35);
+  return sparkleColor * sparkleMask * uSparkle * 0.55 * 0.80;
+}
+
+void main() {
+  vec2 frag = FlutterFragCoord().xy;
+  vec2 uv = frag / uSize;
+  vec2 fromCenter = uv - vec2(0.5);
+  float maxDim = max(uSize.x, uSize.y);
+  vec2 aspectUV = frag / maxDim;
+  float tiltMag = length(uTilt);
+  vec2 tiltDir = safeNormalize(uTilt + vec2(0.001));
+  float highlightDistance = length(uv - (vec2(0.5) + (uTilt * 0.35)));
+  float specularMask = pow(max(0.0, 1.0 - highlightDistance * 2.6), 3.4);
+
+  vec3 base = styleBase(aspectUV, uTilt);
+  vec3 sparkle = sparkleLayer(aspectUV, uTilt, tiltDir);
+  float baseLuma = dot(base, vec3(0.299, 0.587, 0.114));
+  vec3 chromaAdjusted = mix(vec3(baseLuma), base, 0.2 + 0.8 * uPrismatic);
+
+  vec2 normal2d = safeNormalize(fromCenter + vec2(0.001));
+  float directional = 0.5 + 0.5 * dot(normal2d, tiltDir);
+  float tiltLighting = mix(0.86, 1.20, pow(directional, 1.2));
+  chromaAdjusted *= tiltLighting;
+
+  float edgeSpec = pow(1.0 - directional, 2.2);
+  vec3 specular = vec3(specularMask) * (0.3 + 0.7 * edgeSpec) * uSpecular * (0.35 + 0.65 * tiltMag) * 1.15;
+  float prismaticPhase = dot(aspectUV, vec2(3.6, -2.1)) + dot(uTilt, vec2(0.9, -0.7));
+  vec3 prismaticTint = rainbow(prismaticPhase, 0.72, 1.0) * uPrismatic * 1.30 * 1.15 * (0.08 + 0.14 * edgeSpec);
+  float microMask = 0.5 + 0.5 * sin(dot(aspectUV, vec2(137.0, 57.0)) + noise(aspectUV * 14.0) * 4.0 + dot(uTilt, vec2(9.0, 4.0)) * 2.0);
+  vec3 microShimmer = rainbow(noise(aspectUV * 10.0) + dot(uTilt, vec2(0.4, -0.3)) * 0.3, 0.65, 1.0) * microMask * uDiffraction * 0.18;
+
+  vec3 styleColor = chromaAdjusted + microShimmer + prismaticTint + (specular * 0.22) + sparkle;
+  vec3 mappedColor = styleColor / (1.0 + styleColor * 0.3);
+  float luma = dot(mappedColor, vec3(0.299, 0.587, 0.114));
+  vec3 vibrantColor = mix(vec3(luma), mappedColor, 1.4);
+  float foilBrightness = dot(vibrantColor, vec3(0.333));
+  float alpha = clamp(foilBrightness * 0.5, 0.0, 0.35) * clamp(uOpacity, 0.0, 1.0);
+  vec3 finalColor = clamp(vibrantColor, 0.0, 1.0);
+  fragColor = vec4(finalColor * alpha, alpha);
+}
@@ -0,0 +1,131 @@
+#version 460 core
+#include <flutter/runtime_effect.glsl>
+
+out vec4 fragColor;
+
+uniform vec2 uSize;
+uniform vec2 uTilt;
+uniform float uPrismatic;
+uniform float uSparkle;
+uniform float uSpecular;
+uniform float uDiffraction;
+uniform float uOpacity;
+
+#define TWO_PI 6.28318530718
+
+float hash(vec2 p) {
+  vec3 p3 = fract(vec3(p.xyx) * 0.1031);
+  p3 += dot(p3, p3.yzx + 33.33);
+  return fract((p3.x + p3.y) * p3.z);
+}
+
+float noise(vec2 p) {
+  vec2 i = floor(p);
+  vec2 f = fract(p);
+  vec2 u = f * f * (3.0 - 2.0 * f);
+  float a = hash(i);
+  float b = hash(i + vec2(1.0, 0.0));
+  float c = hash(i + vec2(0.0, 1.0));
+  float d = hash(i + vec2(1.0, 1.0));
+  return mix(mix(a, b, u.x), mix(c, d, u.x), u.y);
+}
+
+vec3 hsv2rgb(float h, float s, float v) {
+  vec3 k = vec3(1.0, 2.0 / 3.0, 1.0 / 3.0);
+  vec3 p = abs(fract(vec3(h) + k) * 6.0 - 3.0);
+  return v * mix(vec3(1.0), clamp(p - 1.0, 0.0, 1.0), s);
+}
+
+vec3 rainbow(float phase, float saturation, float value) {
+  return hsv2rgb(fract(phase), saturation, value);
+}
+
+vec2 safeNormalize(vec2 p) {
+  return p * inversesqrt(max(dot(p, p), 0.000001));
+}
+
+float sdBox(vec2 p, vec2 b) {
+  vec2 d = abs(p) - b;
+  return length(max(d, 0.0)) + min(max(d.x, d.y), 0.0);
+}
+
+float sparkleRectangleMask(vec2 p, float halfWidth, float halfHeight, float rotation) {
+  float c = cos(rotation);
+  float s = sin(rotation);
+  vec2 q = vec2(c * p.x - s * p.y, s * p.x + c * p.y);
+  float body = sdBox(q, vec2(halfWidth, halfHeight));
+  float bevel = sdBox(q, vec2(halfWidth * 0.78, halfHeight * 0.78));
+  float bodyMask = smoothstep(0.03, -0.03, body);
+  float centerLine = 1.0 - smoothstep(0.0, halfHeight * 1.25, abs(q.y));
+  float endFade = 1.0 - smoothstep(halfWidth * 0.55, halfWidth * 1.05, abs(q.x));
+  float streak = centerLine * endFade;
+  float bevelRing = smoothstep(0.025, -0.025, body) - smoothstep(0.025, -0.025, bevel);
+  return clamp(bodyMask * (0.58 + 0.42 * streak) + bevelRing * 0.25, 0.0, 1.0);
+}
+
+vec3 styleBase(vec2 uv, vec2 tilt) {
+  vec2 g = uv * 60.0;
+  vec2 staggered = vec2(g.x + 0.5 * mod(floor(g.y), 2.0), g.y);
+  vec2 f = fract(staggered) - 0.5;
+  float d2 = dot(f, f);
+  float dotMask = smoothstep(0.1764, 0.01, d2);
+  float emboss = smoothstep(0.2025, 0.0324, d2);
+  float sheen = 0.5 + 0.5 * sin(dot(uv, vec2(18.0, -6.0)) + noise(uv * 6.0) * 2.5 + dot(tilt, vec2(2.4, 1.8)) * 2.0);
+  vec3 gold = vec3(0.84, 0.70, 0.24);
+  vec3 warm = vec3(1.0, 0.88, 0.42);
+  vec3 shadow = vec3(0.18, 0.14, 0.05);
+  return gold * (0.75 + 0.25 * sheen) + warm * dotMask * 0.28 + shadow * emboss * 0.08;
+}
+
+vec3 sparkleLayer(vec2 aspectUV, vec2 tilt, vec2 tiltDir) {
+  vec2 sparkleGrid = aspectUV * 18.0;
+  vec2 grid = floor(sparkleGrid);
+  vec2 cell = fract(sparkleGrid) - 0.5;
+  float sparkleHash = hash(grid);
+  vec2 sparkleNormal = safeNormalize(vec2(sparkleHash * 2.0 - 1.0, hash(grid + 19.7) * 2.0 - 1.0));
+  float rarity = step(0.83, hash(grid + 0.31));
+  float alignment = max(0.0, dot(tiltDir, sparkleNormal));
+  float twinkle = 0.45 + 0.55 * sin(dot(cell, vec2(21.0, -17.0)) + dot(tilt, vec2(5.3, -4.1)) + sparkleHash * TWO_PI);
+  float shapeMask = sparkleRectangleMask(cell, 0.34, 0.045, hash(grid + 5.1) * TWO_PI);
+  float sparkleMask = pow(alignment, 3.2) * twinkle * rarity * shapeMask;
+  vec3 sparkleColor = mix(vec3(1.0), rainbow(sparkleHash + dot(tilt, vec2(0.2, -0.15)), 0.55, 1.0), 0.35);
+  return sparkleColor * sparkleMask * uSparkle * 0.70;
+}
+
+void main() {
+  vec2 frag = FlutterFragCoord().xy;
+  vec2 uv = frag / uSize;
+  vec2 fromCenter = uv - vec2(0.5);
+  float maxDim = max(uSize.x, uSize.y);
+  vec2 aspectUV = frag / maxDim;
+  float tiltMag = length(uTilt);
+  vec2 tiltDir = safeNormalize(uTilt + vec2(0.001));
+  float highlightDistance = length(uv - (vec2(0.5) + (uTilt * 0.35)));
+  float specularMask = pow(max(0.0, 1.0 - highlightDistance * 2.6), 3.6);
+
+  vec3 base = styleBase(aspectUV, uTilt);
+  vec3 sparkle = sparkleLayer(aspectUV, uTilt, tiltDir);
+  float baseLuma = dot(base, vec3(0.299, 0.587, 0.114));
+  vec3 chromaAdjusted = mix(vec3(baseLuma), base, 0.2 + 0.8 * uPrismatic);
+
+  vec2 normal2d = safeNormalize(fromCenter + vec2(0.001));
+  float directional = 0.5 + 0.5 * dot(normal2d, tiltDir);
+  float tiltLighting = mix(0.86, 1.20, pow(directional, 1.2));
+  chromaAdjusted *= tiltLighting;
+
+  float edgeSpec = pow(1.0 - directional, 2.2);
+  vec3 specular = vec3(specularMask) * (0.3 + 0.7 * edgeSpec) * uSpecular * (0.35 + 0.65 * tiltMag) * 1.50;
+  float prismaticPhase = dot(aspectUV, vec2(3.6, -2.1)) + dot(uTilt, vec2(0.9, -0.7));
+  vec3 prismaticTint = rainbow(prismaticPhase, 0.72, 1.0) * uPrismatic * 1.18 * 0.65 * (0.08 + 0.14 * edgeSpec);
+  float microMask = 0.5 + 0.5 * sin(dot(aspectUV, vec2(137.0, 57.0)) + noise(aspectUV * 14.0) * 4.0 + dot(uTilt, vec2(9.0, 4.0)) * 2.0);
+  vec3 microShimmer = rainbow(noise(aspectUV * 10.0) + dot(uTilt, vec2(0.4, -0.3)) * 0.3, 0.65, 1.0) * microMask * uDiffraction * 0.18;
+
+  vec3 styleColor = chromaAdjusted + microShimmer + prismaticTint + (specular * 0.22) + sparkle;
+  vec3 mappedColor = styleColor / (1.0 + styleColor * 0.3);
+  float luma = dot(mappedColor, vec3(0.299, 0.587, 0.114));
+  vec3 vibrantColor = mix(vec3(luma), mappedColor, 1.4);
+  float foilBrightness = dot(vibrantColor, vec3(0.333));
+  float alpha = clamp(foilBrightness * 0.5, 0.0, 0.35) * clamp(uOpacity, 0.0, 1.0);
+  vec3 finalColor = clamp(vibrantColor, 0.0, 1.0);
+  fragColor = vec4(finalColor * alpha, alpha);
+}
@@ -8,22 +8,12 @@ const ValueKey<String> _cardTransformKey =
    ValueKey<String>('holo_shiny.card.transform');

 void main() {
-  test('default holograph style is crackedIce', () {
+  test('default profile is crackedIce', () {
    const Shiny shiny = Shiny(child: SizedBox.shrink());
    const ShinyCard shinyCard = ShinyCard();

-    expect(shiny.style, HolographStyle.crackedIce);
-    expect(shinyCard.style, HolographStyle.crackedIce);
-  });
-
-  test('default sparkle shape is none', () {
-    const Shiny shiny = Shiny(child: SizedBox.shrink());
-    const ShinyCard shinyCard = ShinyCard();
-
-    expect(shiny.sparkleShape.kind, SparkleShapeKind.none);
-    expect(shiny.sparkleShape.primary, 0.0);
-    expect(shinyCard.sparkleShape.kind, SparkleShapeKind.none);
-    expect(shinyCard.sparkleShape.primary, 0.0);
+    expect(shiny.profile, ShinyProfile.crackedIce);
+    expect(shinyCard.profile, ShinyProfile.crackedIce);
  });

  test('default opacity is 1.0', () {
@@ -34,27 +24,17 @@ void main() {
    expect(shinyCard.opacity, 1.0);
  });

-  test('custom sparkle factories produce expected specs', () {
-    final SparkleShapeSpec star =
-        SparkleShapeSpec.customStar(points: 7, innerRatio: 0.33);
-    final SparkleShapeSpec polygon = SparkleShapeSpec.customPolygon(
-        sides: 8, aspectRatio: 1.2, rotation: 0.4);
-    final SparkleShapeSpec rectangle = SparkleShapeSpec.customRectangle(
-        halfWidth: 0.20, halfHeight: 0.05, rotationJitter: 0.7);
+  test('custom profile can be set on both widgets', () {
+    const Shiny shiny = Shiny(
+      profile: ShinyProfile.superGoldVinyl,
+      child: SizedBox.shrink(),
+    );
+    const ShinyCard shinyCard = ShinyCard(
+      profile: ShinyProfile.silverMosaic,
+    );

-    expect(star.kind, SparkleShapeKind.star);
-    expect(star.primary, 7.0);
-    expect(star.secondary, 0.33);
-
-    expect(polygon.kind, SparkleShapeKind.polygon);
-    expect(polygon.primary, 8.0);
-    expect(polygon.secondary, 1.2);
-    expect(polygon.tertiary, 0.4);
-
-    expect(rectangle.kind, SparkleShapeKind.rectangle);
-    expect(rectangle.primary, 0.20);
-    expect(rectangle.secondary, 0.05);
-    expect(rectangle.tertiary, 0.7);
+    expect(shiny.profile, ShinyProfile.superGoldVinyl);
+    expect(shinyCard.profile, ShinyProfile.silverMosaic);
  });

  testWidgets('Shiny wraps any child without card transform',