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Fixed in Unity 2019.3
Votes
0
Found in
2019.1
Issue ID
1146174
Regression
No
[PLM] Progressive Lightmapper does not converge with translucent materials
Using the CPU PLM with translucent materials can cause noise in lightmaps with very high sample count 65K. This indicates that the sampling has correlation or biases, which in the end mean that the lightmap will never converge regardless of the number of samples.
This happens in Enter The Room sequence 3 where light is entering the room via translucent curtains.
https://drive.google.com/open?id=170f0CheXb8vJZ82G0x4aNlFmGvAWA7wD
Stripped version of Enter the Room Sequence 3:
https://imgur.com/iMJIrDy.jpg
Notice the noise around the curtains:
https://imgur.com/m442fT7.jpg
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