[Impeller] Vulkan: Top line of text is cropped sometimes in wonderous app

[gaaclarke]

description

I've seen this with the opengles backend and the vulkan backend. It's shown up in a couple places in the app, not just here.

I checked against the skia backend and this was not a problem.

doctor

[✓] Flutter (Channel main, 3.12.0-3.0.pre.44, on macOS 13.4 22F66 darwin-arm64, locale en)
    • Flutter version 3.12.0-3.0.pre.44 on channel main at /Users/aaclarke/dev/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision e84fa2ce47 (4 hours ago), 2023-06-09 23:06:21 +0500
    • Engine revision bc6e047570
    • Dart version 3.1.0 (build 3.1.0-180.0.dev)
    • DevTools version 2.24.0

engine version

64d0cc34e7949bd6e5b3891670e124c5cb233fa0

os

Android

screenshot

cc @bdero

[bdero]

Is this happening on the Metal backend too? If that's the case, then this is definitely a regression introduced after the 3.10 branch cut.

[bdero]

I checked wondrous at engine head and am not reproducing it on iOS.

[gaaclarke]

@bdero did you see there is another funky text bug in that screenshot for ios?

[bdero]

Hmm, I'm not spotting an issue. What is it?

[gaaclarke]

Hmm, I'm not spotting an issue. What is it?

Look at the words "First" "state" and "connect", see the space before the t's.

[bdero]

Oh, do you mean the curve connecting the letters? ct and st have special glyphs in Raleway:

[jonahwilliams]

Please check if this is fixed after flutter/engine#42746 lands