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Issue ID

1204412

Regression

Yes

[GPU PLM][macOS] Baking is stuck on 'Finalizing Bake' after switching lightmapper a few times

Global Illumination

-

Was trying to debug https://fogbugz.unity3d.com/f/cases/1190228/ using the attached project, and end up in a state where I no longer can bake (and no errors or breakpoints hitting).

Seen on 20.1.0a17.2009 on OSX Mojave:
AMD Radeon R9 M370X 2 GB
Intel Iris Pro 1536 MB

The steps are:

Be in auto on the scene.
1. Let GPU finish
2. Change to smaller values (8/8/8) for samples and let finish
3. Change to CPU and let finish
4. Change to GPU and it is stuck on Finialize
5. Change to CPU or Enlighten and it just says "Baking...".
6. The state is dead and the editor has to be restarted.

OR

1. Download this project: https://drive.google.com/open?id=1nwMJTBkmBn3UQtwe8vaqlh-SHkSKjp_C
2. Open the project on OSX;
3. In the Lighting window press Generate Lighting button and observe that the baking is stuck in the neverending loop.

- Reproducible only on OSX with AMD GPU; not reproducible on Windows with NVIDIA GPU;
- Reproducible in 2020.1.0a16;
- Not reproducible in 2019.3.0f3.

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