[Web]: Gradient transforms do not work on web #56338
Description
Flutter version: Flutter (Channel dev, v1.18.0-8.0.pre, on Mac OS X 10.15.4 19E287, locale en-US)
The following code generates an error when run on the web:
══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
The following UnimplementedError was thrown during a scheduler callback:
matrix4 not supported in GradientRadial shader
When the exception was thrown, this was the stack:
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Gradient Tranform Test',
theme: ThemeData(
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: Scaffold(body: Center(child: GradientExample())),
);
}
}
class GradientExample extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Container(
width: 250,
height: 250,
decoration: BoxDecoration(
gradient: RadialGradient(
colors: [Colors.blue, Colors.green],
transform: GradientRotation(3.14 / 4),
),
),
);
}
}