flutter/dev/benchmarks/macrobenchmarks/test_driver/cubic_bezier_perf.dart
Ian Hickson 449f4a6673
License update (#45373)
* Update project.pbxproj files to say Flutter rather than Chromium

Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright.

* Update the copyright notice checker to require a standard notice on all files

* Update copyrights on Dart files. (This was a mechanical commit.)

* Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine.

Some were already marked "The Flutter Authors", not clear why. Their
dates have been normalized. Some were missing the blank line after the
license. Some were randomly different in trivial ways for no apparent
reason (e.g. missing the trailing period).

* Clean up the copyrights in non-Dart files. (Manual edits.)

Also, make sure templates don't have copyrights.

* Fix some more ORGANIZATIONNAMEs
2019-11-27 15:04:02 -08:00

41 lines
1.4 KiB
Dart

// 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:ui';
import 'package:flutter_driver/driver_extension.dart';
import 'package:flutter/painting.dart' show DefaultShaderWarmUp, PaintingBinding;
import 'package:macrobenchmarks/main.dart' as app;
class CubicBezierShaderWarmUp extends DefaultShaderWarmUp {
@override
Future<void> warmUpOnCanvas(Canvas canvas) async {
await super.warmUpOnCanvas(canvas);
// Warm up the cubic shaders used by CubicBezierPage.
//
// This tests that our custom shader warm up is working properly.
// Without this custom shader warm up, the worst frame time is about 115ms.
// With this, the worst frame time is about 70ms. (Data collected on a Moto
// G4 based on Flutter version 704814c67a874077710524d30412337884bf0254.
final Path path = Path();
path.moveTo(20.0, 20.0);
// This cubic path is based on
// https://skia.org/user/api/SkPath_Reference#SkPath_cubicTo
path.cubicTo(300.0, 80.0, -140.0, 90.0, 220.0, 10.0);
final Paint paint = Paint();
paint.isAntiAlias = true;
paint.strokeWidth = 18.0;
paint.style = PaintingStyle.stroke;
paint.strokeCap = StrokeCap.round;
canvas.drawPath(path, paint);
}
}
void main() {
PaintingBinding.shaderWarmUp = CubicBezierShaderWarmUp();
enableFlutterDriverExtension();
app.main();
}