[Impeller] Different text weight vs Skia

[Brazol]

I couldn't find any issue related to this (although I'm sure it's there somewhere because this one is really hard to miss). I'm reporting just in case.

Scaffold(
      body: Column(
        crossAxisAlignment: CrossAxisAlignment.center,
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Text(
            'Body medium',
            style: Theme.of(context).textTheme.bodyMedium,
            textAlign: TextAlign.center,
          ),
          Text(
            'Body medium 500',
            style: Theme.of(context)
                .textTheme
                .bodyMedium
                ?.copyWith(fontWeight: FontWeight.w500),
            textAlign: TextAlign.center,
          ),
          Text(
            'Body medium 600',
            style: Theme.of(context)
                .textTheme
                .bodyMedium
                ?.copyWith(fontWeight: FontWeight.w600),
            textAlign: TextAlign.center,
          ),
          Text(
            'Body medium 700',
            style: Theme.of(context)
                .textTheme
                .bodyMedium
                ?.copyWith(fontWeight: FontWeight.w700),
            textAlign: TextAlign.center,
          ),
        ],
      ),
    )

Skia result:

Impeller result:

[jonahwilliams]

This was fixed in #118613

FYI @zanderso @bdero if you think we should cherry pick this

[zanderso]

@jonahwilliams Was there also a follow-up PR to retain linear sampling for rotated text? Did that land?

[jonahwilliams]

yes: flutter/engine#39112

[huycozy]

Keeping this open until the CP lands on stable.

impeller	skia stable

flutter doctor -v (stable)

[✓] Flutter (Channel stable, 3.7.0, on macOS 13.0.1 22A400 darwin-x64, locale en-VN)
    • Flutter version 3.7.0 on channel stable at /Users/huynq/Documents/GitHub/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision b06b8b2710 (3 days ago), 2023-01-23 16:55:55 -0800
    • Engine revision b24591ed32
    • Dart version 2.19.0
    • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/huynq/Library/Android/sdk
    • Platform android-33, build-tools 31.0.0
    • ANDROID_HOME = /Users/huynq/Library/Android/sdk
    • Java binary at: /Applications/Android Studio Dolphin 2021.3.1.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14B47b
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.3)
    • Android Studio at /Applications/Android Studio Dolphin 2021.3.1.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)

[!] Android Studio (version 2022.1)
    • Android Studio at /Applications/Android Studio Electric Eel 2022.1.1.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    ✗ Unable to find bundled Java version.
    • Try updating or re-installing Android Studio.

[✓] IntelliJ IDEA Community Edition (version 2022.1.1)
    • IntelliJ at /Users/huynq/Library/Application Support/JetBrains/Toolbox/apps/IDEA-C/ch-0/221.5591.52/IntelliJ IDEA CE.app
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] VS Code (version 1.74.3)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.58.0

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-x64     • macOS 13.0.1 22A400 darwin-x64
    • Chrome (web)    • chrome • web-javascript • Google Chrome 109.0.5414.119

[✓] HTTP Host Availability
    • All required HTTP hosts are available

! Doctor found issues in 1 category.

[RobertBrunhage]

Any expected timeframe this will be cherry-picked/hotfixed into stable?

[Mastersam07]

Also experiencing this.

[zanderso]

Hi folks. We're expecting multiple Impeller text fixes (#119292, #119183) to be in the first 3.7 hotfix release. Please stay tuned.

[bdero]

The patches we landed in the hotfix solve the blurriness problem along with some text transform issues. However, text still seems to be heavier across the board for Impeller, and so I'm going to reopen this issue for tracking this specific problem.

The three other text rendering bugs that we've been addressing are here:

• [Impeller] fonts are blurry #118613
• [Impeller] Text glyphs get transformed incorrectly when drawing with some font weights #119489
• [Impeller] text is transformed incorrectly #117428

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.