[macOS] Rendering an empty scene after a scene with content does not clear old content. #113785
Description
Steps to Reproduce
- Execute
flutter runon the code sample
Expected results:
Screen.Recording.2022-10-20.at.9.12.22.AM.mov
The content should be cleared after the second call to render an empty scene.
Actual results:
Screen.Recording.2022-10-20.at.7.52.47.AM.mov
The content is not cleared.
Code sample
import 'dart:ui';
Picture _createSimplePicture() {
Paint blackPaint = Paint();
PictureRecorder baseRecorder = PictureRecorder();
Canvas canvas = Canvas(baseRecorder);
canvas.drawRect(Rect.fromLTRB(0.0, 0.0, 1000.0, 1000.0), blackPaint);
return baseRecorder.endRecording();
}
void main() async {
PlatformDispatcher.instance.views.first.render(SceneBuilder().build());
// 1. should look black
await Future.delayed(const Duration(seconds: 2));
final SceneBuilder builder = SceneBuilder();
builder.addPicture(Offset(1.0, 1.0), _createSimplePicture());
builder.pushOffset(1.0, 2.0);
builder.pop();
PlatformDispatcher.instance.views.first.render(builder.build());
// 2. should have a red square
await Future.delayed(const Duration(seconds: 2));
PlatformDispatcher.instance.views.first.render(SceneBuilder().build());
// 3. should be black again.
await Future.delayed(const Duration(seconds: 2));
}Logs
flutter analyze
Analyzing flutter_desktop_bug...
warning • The include file 'package:flutter_lints/flutter.yaml' in
'/Users/stephenwallen/Development/flutter_projects/flutter_desktop_bug/analysis_options.ya
ml' can't be found when analyzing
'/Users/stephenwallen/Development/flutter_projects/flutter_desktop_bug' •
analysis_options.yaml:10:10 • include_file_not_found
flutter doctor -v
[✓] Flutter (Channel master, 3.0.0-1.0.pre.3445, on macOS 12.6 21G115 darwin-arm64, locale en)
• Flutter version 3.0.0-1.0.pre.3445 on channel master at
/Users/stephenwallen/Development/flutter/flutter
• Upstream repository [email protected]:a-wallen/flutter.git
• FLUTTER_GIT_URL = [email protected]:a-wallen/flutter.git
• Framework revision 38ef9410b4 (24 hours ago), 2022-10-19 12:13:12 -0700
• Engine revision 563b8e830c
• Dart version 2.19.0 (build 2.19.0-317.0.dev)
• DevTools version 2.18.0
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at
/Users/stephenwallen/Development/flutter/engine/src/third_party/android_tools/sdk
• Platform android-33, build-tools 33.0.0
• ANDROID_SDK_ROOT =
/Users/stephenwallen/Development/flutter/engine/src/third_party/android_tools/sdk
• Java binary at: /Library/Java/JavaVirtualMachines/zulu-11.jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment Zulu11.58+23-CA (build 11.0.16.1+1-LTS)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 14.0)
• Xcode at /Applications/Xcode-beta.app/Contents/Developer
• Build 14A5270f
• CocoaPods version 1.11.3
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[!] Android Studio (not installed)
• Android Studio not found; download from https://developer.android.com/studio/index.html
(or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed
instructions).
[✓] VS Code (version 1.72.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.50.0
[✓] Connected device (2 available)
• macOS (desktop) • macos • darwin-arm64 • macOS 12.6 21G115 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 106.0.5249.119
[✓] HTTP Host Availability
• All required HTTP hosts are available
! Doctor found issues in 1 category.