Search Issue Tracker




Found in


Issue ID




[GPU PLM][M1] Editor freezes during GI bake on Apple Silicon machine when certain lightmapping settings are used

Global Illumination


You'll need a Mac M1 Apple Silicon machine and Arm64-based Editor installed.

Steps to repro:
1. Download the attached project and open "Sponza" scene on the OSX with Apple Silicon architecture;
2. In the Preferences window (Unity>Preferences>GI Cache) press Clean Cache button;
3. Drag and drop "SponzaLightingDay" scene to the Hierarchy;
4. In the Hierarchy double-click on the SponzaLightingDay scene to make it active scene;
5. In the Lighting window (Window>Rendering>Lighting) press Generate Lighting button.

Expected result:
The GI is baked without errors/freezes/crashes.

Actual result:
Editor freezes at the end of the bake (seemingly before the reflection probe baking stage). See attached screenshot.

- Reproducible in Version 2021.2.0a20;
- Reproducible only on Apple Silicon machine; could not reproduce on the Intel based Mac machine or on Windows;
- Does not repro if baking with lightmap resolution set to 35;
- Does not repro when filtering is disabled in the lighting settings;
- Another possible symptom: Script Compilation error is always shown in the Background tasks window while running the project on Apple M1 machine (not shown on Intel-based Mac machine).

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.