Crash when present an CAEAGLLayer on iOS real device

[JackieLuo001]

I am adding the Flutter Module to an existing project which using CAEAGLLayer.
App crashed when running on an IOS real device after adding a boolean property to the app's Info.plist file with the key io.flutter.embedded_views_preview and the value YES. But everything works fine, if set the value NO or run the app on a simulator.

Steps to Reproduce

1. clone the project at https://github.com/JackieLuo001/CocosEmbedFlutter.git.
2. cd flutter_module folder and run flutter pub get.
3. cd proj.ios_mac and run pod install.
4. run the project on an IOS real device.
5. tap the Enter Game button.

Crash Info

The crash is caused by an Assertion failure in -[CCES2Renderer resizeFromLayer:].But when calling with the glGetRenderbufferParameteriv(line 111 in CCES2Renderer-ios.m) function, the result of backingWidth_ is an incorrect 0 which should be a nonzero value related to device width.If we set the value of io.flutter.embedded_views_preview NO or run the app on a simulator, then everything works fine.

Flutter Doctor -v

[✓] Flutter (Channel master, v1.9.6-pre.6, on Mac OS X 10.14.6 18G87, locale zh-Hans-CN)
    • Flutter version 1.9.6-pre.6 at /Users/macbook03/flutter
    • Framework revision d37a38cee1 (2 days ago), 2019-08-25 10:57:54 -0700
    • Engine revision deca2c0da8
    • Dart version 2.5.0

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/macbook03/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = /Users/macbook03/Library/Android/sdk
    • ANDROID_SDK_ROOT = /Users/macbook03/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 10.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.2.1, Build version 10E1001
    • CocoaPods version 1.7.5

[✓] Android Studio (version 3.4)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 37.1.1
    • Dart plugin version 183.6270
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)

[✓] VS Code (version 1.37.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.3.0

[✓] Connected device (1 available)
    • AAA iPad • 1880473dc43d158591417cb725e90d0a8b0e5d5e • ios • iOS 12.3.1

• No issues found!

[kf6gpe]

Adding engine label per ongoing triage experiment --- would this be in the engine?

[TahaTesser]

Hi @JackieLuo001
Looks like the repo you provided is deleted

tahatesser@Tahas-MacBook-Pro AndroidStudioProjects % git clone https://github.com/JackieLuo001/CocosEmbedFlutter.git
Cloning into 'CocosEmbedFlutter'...
remote: Repository not found.
fatal: repository 'https://github.com/JackieLuo001/CocosEmbedFlutter.git/' not found
tahatesser@Ta

Can you please provide your flutter doctor -v and a complete reproducible minimal code sample
Thank you

[pedromassangocode]

Without additional information, we are unfortunately not sure how to resolve this issue.
We are therefore reluctantly going to close this bug for now.
Please don't hesitate to comment on the bug if you have any more information for us; we will reopen it right away!
Thanks for your contribution.

Could everyone who still has this problem please file a new issue with the exact description of what happens, logs, and the output of flutter doctor -v.
All system setups can be slightly different, so it's always better to open new issues and reference related issues.

[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.