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Fix #114415: USDZ conversion happens outside of main thread. #114420

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Bastien Montagne merged 1 commits from mont29/blender:tmp-fix-114415-usdz-export into blender-v4.0-release 2023-11-03 10:56:05 +01:00
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Bastien Montagne commented 2023-11-02 17:49:35 +01:00
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USDZ conversion currently requires to change the 'current working
directory', due to internal USD library limitations.

This can only be done from main thread (and is highly discouraged in
general). This implies that USDZ conversion cannot happen from the Job
worker thread.

This commit moves it to the endjob callback of the USD export job
instead, as it is guaranteed to be executed from caller thread, i.e.
main thread in this case.

USDZ conversion currently requires to change the 'current working directory', due to internal USD library limitations. This can only be done from main thread (and is highly discouraged in general). This implies that USDZ conversion cannot happen from the Job worker thread. This commit moves it to the `endjob` callback of the USD export job instead, as it is guaranteed to be executed from caller thread, i.e. main thread in this case.
Bastien Montagne requested review from Brecht Van Lommel 2023-11-02 17:50:21 +01:00
Bastien Montagne requested review from Michael Kowalski 2023-11-02 17:50:21 +01:00
Bastien Montagne added this to the 4.0 milestone 2023-11-02 17:50:27 +01:00
Bastien Montagne added the
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Bastien Montagne added this to the USD project 2023-11-02 17:50:41 +01:00
Bastien Montagne commented 2023-11-02 17:50:53 +01:00
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@blender-bot build

@blender-bot build
Brecht Van Lommel approved these changes 2023-11-02 19:05:02 +01:00
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It's unfortunate to block the UI for a conflict that is unlikely to happen in practice, but I guess it's not so bad and we might as well be correct.

Can you add a comment explaining why this code is here? In the future we may be able to move this, if the USDZ API gets improved.

It's unfortunate to block the UI for a conflict that is unlikely to happen in practice, but I guess it's not so bad and we might as well be correct. Can you add a comment explaining why this code is here? In the future we may be able to move this, if the USDZ API gets improved.
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Michael Kowalski approved these changes 2023-11-02 20:10:38 +01:00
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Thank you for the fix!

Thank you for the fix!
Bastien Montagne force-pushed tmp-fix-114415-usdz-export from 3045494db8 to 31bd2a0f64 2023-11-03 10:50:00 +01:00 Compare
Bastien Montagne merged commit cc6c5cb7f4 into blender-v4.0-release 2023-11-03 10:56:05 +01:00
Bastien Montagne deleted branch tmp-fix-114415-usdz-export 2023-11-03 10:56:10 +01:00
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Reference: blender/blender#114420
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