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Third Party Issue
Votes
0
Found in
2019.4.7f1
2020.2.0a17
2020.3
2021.1
2021.2
Issue ID
1327649
Regression
Yes
[macOS] Native OSX OpenGLCore crash when OpenGL Context for a window is set
How to reproduce:
1. Open the attached project's Scene labeled "SampleScene"
2. Enter the Play Mode
3. Wait for the Scene to load
Expected result: Scene is loaded
Actual result: Unity Editor hangs/freezes
Reproducible with: 2020.2.0a17, 2020.3.7f1, 2021.1.6f1, 2021.2.0a16
Not reproducible with: 2018.4.34f1, 2019.4.25f1, 2020.1.17f1, 2020.2.0a16
Note:
- With Unity 2021.2.0a16 Editor crashes when exiting Play Mode instead
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Resolution Note (2021.2.X):
This issue is caused by a changes made by Apple in the MacOS Catalina (11.0) SDK that restricts certain context methods that can be called in multi-threaded situations. In particular, the crash results from calling the context methods in a thread supporting a native OpenGL plugin (i.e., a custom .dylib not provided by Unity).
Running the Editor with `-force-gfx-direct` resolves these crashes and can be used as a temporary workaround.
The issue can be mitigated by updating native plugin implementations to avoid calling these context methods from a thread other than the main thread.