| // 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:async' show Completer, StreamSubscription; |
| import 'dart:io' show Directory, Process; |
| |
| import 'package:flutter_devicelab/framework/devices.dart' |
| show Device, DeviceOperatingSystem, deviceOperatingSystem, devices; |
| import 'package:flutter_devicelab/framework/framework.dart' show task; |
| import 'package:flutter_devicelab/framework/task_result.dart' show TaskResult; |
| import 'package:flutter_devicelab/framework/utils.dart' |
| show dir, flutter, flutterDirectory, inDirectory, startFlutter; |
| import 'package:path/path.dart' as path; |
| |
| Future<TaskResult> run() async { |
| deviceOperatingSystem = DeviceOperatingSystem.android; |
| final Device device = await devices.workingDevice; |
| await device.unlock(); |
| final Directory appDir = |
| dir(path.join(flutterDirectory.path, 'examples/hello_world')); |
| |
| bool isUsingValidationLayers = false; |
| bool hasValidationErrors = false; |
| int impellerBackendCount = 0; |
| final Completer<void> didReceiveBackendMessage = Completer<void>(); |
| |
| await inDirectory(appDir, () async { |
| await flutter('packages', options: <String>['get']); |
| |
| final StreamSubscription<String> adb = device.logcat.listen( |
| (String data) { |
| if (data.contains('Using the Impeller rendering backend')) { |
| // Sometimes more than one of these will be printed out if there is a |
| // fallback. |
| if (!didReceiveBackendMessage.isCompleted) { |
| didReceiveBackendMessage.complete(); |
| } |
| impellerBackendCount += 1; |
| } |
| if (data.contains( |
| 'Using the Impeller rendering backend (Vulkan with Validation Layers)')) { |
| isUsingValidationLayers = true; |
| } |
| // "ImpellerValidationBreak" comes from the engine: |
| // https://github.com/flutter/engine/blob/4160ebacdae2081d6f3160432f5f0dd87dbebec1/impeller/base/validation.cc#L40 |
| if (data.contains('ImpellerValidationBreak')) { |
| hasValidationErrors = true; |
| } |
| }, |
| ); |
| |
| final Process process = await startFlutter( |
| 'run', |
| options: <String>[ |
| '--enable-impeller', |
| '-d', |
| device.deviceId, |
| ], |
| ); |
| |
| await didReceiveBackendMessage.future; |
| // Since we are waiting for the lack of errors, there is no determinate |
| // amount of time we can wait. |
| await Future<void>.delayed(const Duration(seconds: 30)); |
| process.stdin.write('q'); |
| await adb.cancel(); |
| }); |
| |
| if (!isUsingValidationLayers || impellerBackendCount != 1) { |
| return TaskResult.failure('Not using Vulkan validation layers.'); |
| } |
| if (hasValidationErrors){ |
| return TaskResult.failure('Impeller validation errors detected.'); |
| } |
| return TaskResult.success(null); |
| } |
| |
| Future<void> main() async { |
| await task(run); |
| } |