Added integration test for wide gamut support. (#119657)

* Added integration test for wide gamut support.

* cleaned up

* deleted files that can be generated

* switched back to standard flutter in the shell script

* added devicelab task

* removed analysis options

* analyzer

* Fixed task

* made local_run.sh not executable

* analyzer

* removed the logo asset

* added task to ci

* updated pubspec

* analysis errors fixed

* updated pubspec

.ci.yaml

@@ -3898,6 +3898,16 @@ targets:
         ["devicelab", "ios", "mac"]
       task_name: simple_animation_perf_ios
 
+  - name: Mac_ios wide_gamut_ios
+    recipe: devicelab/devicelab_drone
+    bringup: true
+    presubmit: false
+    timeout: 60
+    properties:
+      tags: >
+        ["devicelab", "ios", "mac"]
+      task_name: wide_gamut_ios
+
   - name: Mac_ios simple_animation_perf_impeller_ios
     recipe: devicelab/devicelab_drone
     presubmit: false

TESTOWNERS

@@ -87,6 +87,7 @@
 /dev/devicelab/bin/tasks/animated_complex_opacity_perf__e2e_summary.dart @jonahwilliams @flutter/engine
 /dev/devicelab/bin/tasks/animated_complex_image_filtered_perf__e2e_summary.dart @jonahwilliams @flutter/engine
 /dev/devicelab/bin/tasks/spell_check_test.dart @camsim99 @flutter/android
+/dev/devicelab/bin/tasks/wide_gamut_ios.dart @gaaclarke @flutter/engine
 
 ## Windows Android DeviceLab tests
 /dev/devicelab/bin/tasks/basic_material_app_win__compile.dart @zanderso @flutter/tool

dev/devicelab/bin/tasks/wide_gamut_ios.dart

@@ -0,0 +1,12 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter_devicelab/framework/devices.dart';
+import 'package:flutter_devicelab/framework/framework.dart';
+import 'package:flutter_devicelab/tasks/integration_tests.dart';
+
+Future<void> main() async {
+  deviceOperatingSystem = DeviceOperatingSystem.ios;
+  await task(createWideGamutTest());
+}

dev/devicelab/lib/tasks/integration_tests.dart

@@ -157,6 +157,14 @@ TaskFunction createWindowsStartupDriverTest({String? deviceIdOverride}) {
   ).call;
 }
 
+TaskFunction createWideGamutTest() {
+  return IntegrationTest(
+    '${flutterDirectory.path}/dev/integration_tests/wide_gamut_test',
+    'integration_test/app_test.dart',
+    createPlatforms: <String>['ios'],
+  ).call;
+}
+
 class DriverTest {
   DriverTest(
     this.testDirectory,
@@ -204,12 +212,14 @@ class IntegrationTest {
     this.testDirectory,
     this.testTarget, {
       this.extraOptions = const <String>[],
+      this.createPlatforms = const <String>[],
     }
   );
 
   final String testDirectory;
   final String testTarget;
   final List<String> extraOptions;
+  final List<String> createPlatforms;
 
   Future<TaskResult> call() {
     return inDirectory<TaskResult>(testDirectory, () async {
@@ -218,6 +228,15 @@ class IntegrationTest {
       final String deviceId = device.deviceId;
       await flutter('packages', options: <String>['get']);
 
+      if (createPlatforms.isNotEmpty) {
+        await flutter('create', options: <String>[
+          '--platforms',
+          createPlatforms.join(','),
+          '--no-overwrite',
+          '.'
+        ]);
+      }
+
       final List<String> options = <String>[
         '-v',
         '-d',

dev/integration_tests/wide_gamut_test/.gitignore

@@ -0,0 +1,44 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

dev/integration_tests/wide_gamut_test/.metadata

@@ -0,0 +1,30 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled.
+
+version:
+  revision: c379133df6d1f8893ad8c9d0393496c7d6eaf828
+  channel: wide-gamut-integration-test
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: c379133df6d1f8893ad8c9d0393496c7d6eaf828
+      base_revision: c379133df6d1f8893ad8c9d0393496c7d6eaf828
+    - platform: ios
+      create_revision: c379133df6d1f8893ad8c9d0393496c7d6eaf828
+      base_revision: c379133df6d1f8893ad8c9d0393496c7d6eaf828
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

dev/integration_tests/wide_gamut_test/README.md

@@ -0,0 +1,10 @@
+# wide_gamut_test
+
+An integration test used for testing wide gamut color support in the engine.
+
+## Local run
+
+```sh
+flutter create --platforms="ios" --no-overwrite .
+flutter test integration_test/app_test.dart
+```

dev/integration_tests/wide_gamut_test/integration_test/app_test.dart

@@ -0,0 +1,62 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:typed_data';
+
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+
+import 'package:wide_gamut_test/main.dart' as app;
+
+// See: https://developer.apple.com/documentation/metal/mtlpixelformat/mtlpixelformatbgr10_xr.
+double _decodeBGR10(int x) {
+  const double max = 1.25098;
+  const double min = -0.752941;
+  const double intercept = min;
+  const double slope = (max - min) / 1024.0;
+  return (x * slope) + intercept;
+}
+
+bool _isAlmost(double x, double y, double epsilon) {
+  return (x - y).abs() < epsilon;
+}
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  group('end-to-end test', () {
+    testWidgets('look for display p3 deepest red', (WidgetTester tester) async {
+      app.main();
+      await tester.pumpAndSettle(const Duration(seconds: 2));
+
+      const MethodChannel channel = MethodChannel('flutter/screenshot');
+      final List<Object?> result =
+          await channel.invokeMethod('test') as List<Object?>;
+      expect(result, isNotNull);
+      expect(result.length, 4);
+      final int width = (result[0] as int?)!;
+      final int height = (result[1] as int?)!;
+      final String format = (result[2] as String?)!;
+      expect(format, 'MTLPixelFormatBGR10_XR');
+      final Uint8List bytes = (result[3] as Uint8List?)!;
+      final ByteData byteData = ByteData.sublistView(bytes);
+      expect(bytes.lengthInBytes, width * height * 4);
+      expect(bytes.lengthInBytes, byteData.lengthInBytes);
+      bool foundDeepRed = false;
+      for (int i = 0; i < bytes.lengthInBytes; i += 4) {
+        final int pixel = byteData.getUint32(i, Endian.host);
+        final double blue = _decodeBGR10(pixel & 0x3ff);
+        final double green = _decodeBGR10((pixel >> 10) & 0x3ff);
+        final double red = _decodeBGR10((pixel >> 20) & 0x3ff);
+        if (_isAlmost(red, 1.0931, 0.01) &&
+            _isAlmost(green, -0.2268, 0.01) &&
+            _isAlmost(blue, -0.1501, 0.01)) {
+          foundDeepRed = true;
+        }
+      }
+      expect(foundDeepRed, isTrue);
+    });
+  });
+}

dev/integration_tests/wide_gamut_test/ios/Runner/Info.plist

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Wide Gamut Test</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>wide_gamut_test</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+	<key>FLTEnableImpeller</key>
+	<true/>
+	<key>FLTEnableWideGamut</key>
+	<true/>
+</dict>
+</plist>

dev/integration_tests/wide_gamut_test/lib/main.dart

@@ -0,0 +1,106 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:convert' show base64Decode;
+import 'package:flutter/material.dart';
+
+/// A 100x100 png in Display P3 colorspace.
+const String _displayP3Logo =
+    'iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAABdWlDQ1BrQ0dDb2xvclNwYWNlRG'
+    'lzcGxheVAzAAAokXWQvUvDUBTFT6tS0DqIDh0cMolD1NIKdnFoKxRFMFQFq1OafgltfCQpUnET'
+    'Vyn4H1jBWXCwiFRwcXAQRAcR3Zw6KbhoeN6XVNoi3sfl/Ticc7lcwBtQGSv2AijplpFMxKS11L'
+    'rke4OHnlOqZrKooiwK/v276/PR9d5PiFlNu3YQ2U9cl84ul3aeAlN//V3Vn8maGv3f1EGNGRbg'
+    'kYmVbYsJ3iUeMWgp4qrgvMvHgtMunzuelWSc+JZY0gpqhrhJLKc79HwHl4plrbWD2N6f1VeXxR'
+    'zqUcxhEyYYilBRgQQF4X/8044/ji1yV2BQLo8CLMpESRETssTz0KFhEjJxCEHqkLhz634PrfvJ'
+    'bW3vFZhtcM4v2tpCAzidoZPV29p4BBgaAG7qTDVUR+qh9uZywPsJMJgChu8os2HmwiF3e38M6H'
+    'vh/GMM8B0CdpXzryPO7RqFn4Er/QcXKWq8UwZBywAAAJplWElmTU0AKgAAAAgABQESAAMAAAAB'
+    'AAEAAAEaAAUAAAABAAAASgEbAAUAAAABAAAAUgExAAIAAAAhAAAAWodpAAQAAAABAAAAfAAAAA'
+    'AAAABIAAAAAQAAAEgAAAABQWRvYmUgUGhvdG9zaG9wIDI0LjEgKE1hY2ludG9zaCkAAAACoAIA'
+    'BAAAAAEAAABkoAMABAAAAAEAAABkAAAAALGpdjYAAAAJcEhZcwAACxMAAAsTAQCanBgAAAR2aV'
+    'RYdFhNTDpjb20uYWRvYmUueG1wAAAAAAA8eDp4bXBtZXRhIHhtbG5zOng9ImFkb2JlOm5zOm1l'
+    'dGEvIiB4OnhtcHRrPSJYTVAgQ29yZSA2LjAuMCI+CiAgIDxyZGY6UkRGIHhtbG5zOnJkZj0iaH'
+    'R0cDovL3d3dy53My5vcmcvMTk5OS8wMi8yMi1yZGYtc3ludGF4LW5zIyI+CiAgICAgIDxyZGY6'
+    'RGVzY3JpcHRpb24gcmRmOmFib3V0PSIiCiAgICAgICAgICAgIHhtbG5zOnRpZmY9Imh0dHA6Ly'
+    '9ucy5hZG9iZS5jb20vdGlmZi8xLjAvIgogICAgICAgICAgICB4bWxuczp4bXBNTT0iaHR0cDov'
+    'L25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIKICAgICAgICAgICAgeG1sbnM6c3RSZWY9Imh0dH'
+    'A6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiCiAgICAgICAgICAg'
+    'IHhtbG5zOnhtcD0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wLyI+CiAgICAgICAgIDx0aW'
+    'ZmOllSZXNvbHV0aW9uPjcyPC90aWZmOllSZXNvbHV0aW9uPgogICAgICAgICA8dGlmZjpYUmVz'
+    'b2x1dGlvbj43MjwvdGlmZjpYUmVzb2x1dGlvbj4KICAgICAgICAgPHRpZmY6T3JpZW50YXRpb2'
+    '4+MTwvdGlmZjpPcmllbnRhdGlvbj4KICAgICAgICAgPHhtcE1NOkRlcml2ZWRGcm9tIHJkZjpw'
+    'YXJzZVR5cGU9IlJlc291cmNlIj4KICAgICAgICAgICAgPHN0UmVmOmluc3RhbmNlSUQ+eG1wLm'
+    'lpZDpDREE0Mzc3NzhBRjcxMUVEQTU0N0JCNjBEMjUwOTI2RDwvc3RSZWY6aW5zdGFuY2VJRD4K'
+    'ICAgICAgICAgICAgPHN0UmVmOmRvY3VtZW50SUQ+eG1wLmRpZDpDREE0Mzc3ODhBRjcxMUVEQT'
+    'U0N0JCNjBEMjUwOTI2RDwvc3RSZWY6ZG9jdW1lbnRJRD4KICAgICAgICAgPC94bXBNTTpEZXJp'
+    'dmVkRnJvbT4KICAgICAgICAgPHhtcE1NOkRvY3VtZW50SUQ+eG1wLmRpZDpDREE0Mzc3QThBRj'
+    'cxMUVEQTU0N0JCNjBEMjUwOTI2RDwveG1wTU06RG9jdW1lbnRJRD4KICAgICAgICAgPHhtcE1N'
+    'Okluc3RhbmNlSUQ+eG1wLmlpZDpDREE0Mzc3OThBRjcxMUVEQTU0N0JCNjBEMjUwOTI2RDwveG'
+    '1wTU06SW5zdGFuY2VJRD4KICAgICAgICAgPHhtcDpDcmVhdG9yVG9vbD5BZG9iZSBQaG90b3No'
+    'b3AgMjQuMSAoTWFjaW50b3NoKTwveG1wOkNyZWF0b3JUb29sPgogICAgICA8L3JkZjpEZXNjcm'
+    'lwdGlvbj4KICAgPC9yZGY6UkRGPgo8L3g6eG1wbWV0YT4KRm6gbQAABNpJREFUeAHtnOty3CAM'
+    'hZO2Pzrt+z9qO/3RS/iSOVPGwcTrFZLwoqlDfUPifAgc75Lnf09P5d+yLAp8yhLIiuNNgQUkWU'
+    '9YQBaQZAokC2dlyAKSTIFk4awMWUCSKZAsnJUhyYB8SRbPkHB4FfG3bM8DaqduerVV3ZcFglCI'
+    '9KdsP8tm/X6IuoH8uWzfyraAFBH2rIbxo1yk/b3rzxwXjO/lZisYxHG5OUTikxmjYOCDzLCGUa'
+    'q8FpDZYVwKSAQMfFrbJYasKBiWc4fATg8kAgbijYBBvVMDiYKBcKNsWiARMPA52qYEEgVj1DBV'
+    'Q54OSAQMBPOAgZ+pgETA8BimACGbBkgUDK/MmArIo8AAynNprHdWqjPcVM76buqmRpaLUw9Z6i'
+    'meMOTzViGtrk8LBGEYv71heM8ZW5ApgUTAQJhoGMSQDkgUDMTIYKmARMDAZyZLAyQKRoZhqu4Q'
+    'KYBEwECEbDCIKRxIFAwan9FCgUTAwGdmCwMSBSPjMFV3kBAgETBodHYYxOgOJAJG9mEKEDJXIF'
+    'EwZsgMdyALhiTvly4ZsmD0IdRnhwOJgEEDZxqm3IBEwMDnzDYsQ6JgzJoZ6kRDgCwYkvf20hxI'
+    'BAyaPXtmCJ3pkrYIGPKpBrVKrhm5xpDOYNWzTYEQWJbPwAWKeDzWGBY3JmYF9jUYTxg43Bumtj'
+    'DIDmujTsRjwaeliGYZ4g2jJ7B3pvZiufWcGVzLcbRuBL396AJLrsUydY63iI7/NANCRaxKRTwJ'
+    'czyM9pVbGL16OeedGb142i36+KgZEFwhCGOqBZQWDOpvWQ1DE/jeta37jxzbxsM91j6o0xQIQV'
+    'tkyi2Nr2GwLn3E463isfyLDYjfMlMg9BgJdHb4UuO1KJ/9PZMvrznDVKydRpn7uAdKC8besOAN'
+    'Q+3a0dHssDkQIlPwlEczZQtD9VBuLQrGXufYxnfP/hAgBHQLlBaMvUZFwFB79mKyPD4MiBohAf'
+    'cy5SwMr6cp4vO0oUBoSC9TtjB6jeccdWkCH/k0VT9QeAxT6CRzW9ImQSl5PP1dNt7bqPHlv7um'
+    'ewVD+7s3nDhBnUffCJyo/vAtbkCISELSu3+V7WvZPkpR3fMIMIocuRd9RsCQT8SJsI86aERMrz'
+    '4lDJnhOYF7zxlbgc1ev28rvme/huH5Z/qiYaBZugyJgnFPB7K8Nx0QeimT/sjMoNF6uqMDZLJ0'
+    'Q5bn05SyMROQlBkyciwHAhmY1Vx/DzkqAqIxZJEt1nCUFfWrHGsfR9vZui5dhrQEawV+9hjib4'
+    'Gzn8XSAZFglHUvthRMPuoszAIlHRCERzDsEaGkBPKG4/+7L89Mke+oMjWQiEwBROTwlRqIeikC'
+    'PcrwNQWQiEzBZ0SmTAEkMlPk26ucCkhEpgDCM1OmAqJeeuU5ZUogGt8pPR+JPTJlSiBkShQUZe'
+    'moclogUVDwOzJTpgYSBUXZiX9rmx4IgkigK8wplwAiKCpnnugvAwQYmNcjMV9NGvEBWspPDF+V'
+    'veOHoFDqM487qnt3a2uIfHfRyQOXBFJrARR6s+WXs2vgwLFcq355IIKDiCMNMBaW7mtAFo1q1W'
+    'ElWKtuy2OXm9QtxYmoawGJUL3jcwHpiBNxagGJUL3jcwHpiBNxagGJUL3jcwHpiBNxagGJUL3j'
+    'cwHpiBNx6gU/2fLWVmm7wQAAAABJRU5ErkJggg==';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Wide Gamut Test',
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      home: const MyHomePage(title: 'Wide Gamut Test'),
+    );
+  }
+}
+
+class MyHomePage extends StatelessWidget {
+  const MyHomePage({super.key, required this.title});
+
+  final String title;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(title),
+      ),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Image.memory(base64Decode(_displayP3Logo)),
+          ],
+        ),
+      ),
+    );
+  }
+}