ShaderMask is broken and messes up layout, AppBar rendered in the middle of the screen #20859
Description
It seems like there is a bug in the engine in SceneBuilder.pushShaderMask or SceneBuilder.pop that causes this.
This makes ShaderMask unusable.
Example code (taken from the ShaderMask docs):
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Playground',
home: TestPage(),
);
}
}
class TestPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: new AppBar(
title: Text('Test'),
backgroundColor: Colors.blue.withOpacity(0.5),
),
body: Center(
child: ShaderMask(
shaderCallback: (Rect bounds) {
return new RadialGradient(
center: Alignment.topLeft,
radius: 1.0,
colors: <Color>[Colors.yellow, Colors.deepOrange.shade900],
tileMode: TileMode.mirror,
).createShader(bounds);
},
child: const Text('I’m burning the memories'),
),
),
);
}
}Flutter version: Latest master