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Fixed in 2020.2.X

Fixed in 2020.1.X



Found in


Issue ID




[GPU PLM] Bakes take a very long time or do not finish when using high resolution heightmap terrain

Progressive Lightmapper


Steps to reproduce:

1. Download and open FantasyAdventureEnvironment project (link in the comments)
2. Open FAE_Demo scene
3. Attempt to bake the lighting in the scene using either CPU or GPU lightmapper
4. Notice that the bake never finishes


- Only reproduces when Heightmap Resolution is set to 1025x1025 or above
- Does not reproduce if only terrain is present in the scene
- Does not reproduce if the terrain is disabled
- This regression was most likely introduced by stackless BVH branch

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