[Impeller] Visual glitches on iOS simulator when using Impeller rendering engine. #140877
Description
I encountered visual glitches while developing a prototype using Flutter.
The glitches appear on the iOS simulator when using the Impeller rendering engine.
It seems like the cause of those glitches is the usage of the BackdropFilter widgets in the Stack.
Expected results
No visual glitches.
Actual results
There are visual glitches.
Code sample
The source code to reproduce the issue can be found in this repository: https://github.com/ksokolovskyi/dirty_button
Screenshots or Video
Screenshots / Video demonstration
When running with the Impeller rendering engine:
impeller.mov
When running with --no-enable-impller there are no glitches:
no-enable-impeller.mov
Logs
No response
Flutter Doctor output
Doctor output
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.16.5, on macOS 14.1 23B2073 darwin-arm64, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.3)
[✓] VS Code (version 1.85.1)
[✓] Connected device (4 available)
[✓] Network resources
• No issues found!Metadata
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High-priority issues at the top of the work listImpeller rendering backend issues and features requestsflutter/engine related. See also e: labels.Found to occur in 3.16Found to occur in 3.18The issue has been confirmed reproducible and is ready to work onIssue is closed as already fixed in a newer versionOwned by Engine teamTriaged by Engine team