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Fixed in 2021.2.X

Fixed in 2019.4.X, 2020.3.X



Found in





Issue ID




[GPU PLM] Crash in PVRJobCompositeLightmap after falling back to CPU PLM when baking 4k terrain with Optix denoiser

Progressive Lightmapper


Steps to repro:

1. Download the repro project:
2. Open 't1BugTerrainScratch' scene;
3. In the Lighting window setting click 'Generate Lighting' button.

Expected result:
Baking finishes successfully. Fallback to CPU PLM happens gracefully.

Actual result:
Editor crashes in PVRJobCompositeLightmap after falling back to CPU PLM.
Some valuable data from the Editor.log:

'Baked lightmap filtering failed during bake. Try disabling the Optix denoiser or lower the Lightmap Size.

(Filename: C:\buildslave\unity\build\Editor/Src/GI/Progressive/Jobs/PVRJobCompositeLightmap.cpp Line: 1846)'
See attached Editor.log file.

- Reproducible only in lighting/radeonrays/terrain-alloc branch (this crash was masked under a different RadeonRays crash); will be in trunk when this branch hits trunk;
- Reproducible on Windows 10 with NVIDIA GTX 1070 GPU (8Gb of VRAM);
- The crash is related to Optix denoiser failing to allocate VRAM for denosing the lightmap
- Doesn't reproduce when Filtering is set to None in the Lighting settings;
- Doesn't reproduce with the lightmap size = 1024; Reproducible only when the lightmap size is 4096.

Comments (2)

  1. wjp28

    Jun 26, 2019 09:29

    I have a very simple scene and i'm doing nothing crazy but this is a really big issue for me as i NEED certain 2019 features.
    i'm using version 2019.1.8f1
    CPU: i7 9700K
    GPU: RTX 2060

  2. Thall33

    Apr 27, 2019 01:32

    It's still a fantastic bug in 2019.1.0f2. Sometimes it even crashes! its happening without terrain. 2018 baked everything fine, same settings in 2019 and everything is acting strange, wtf is going on?!

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