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Point Density texture works wrong
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Description

System Information
Operating system: Linux-5.3.0-26-generic-x86_64- Ubuntu 19.10 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 435.21

Blender Version
Broken: version: 2.82 (sub 6), branch: master, commit date: 2020-01-10 11:14, hash: rB98671061993e
Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: rBf1aa4d18d49d
Worked: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e

Short description of error
Point Density texture works wrong
Instead of these reports https://developer.blender.org/T66915 https://developer.blender.org/T67718 , I found, that it works correctly in 2.80, but not 2.81a or 2.82 builds. And it also crashes, but only in 2.83

Exact steps for others to reproduce the error

  • Open file, switch to rendered mode:

  • Change resolution or radius value of point density texture.

There is 3 different results, depends on resolution or radius value:

Working ~40% times:


Not working ~60% times:

Mesh up, less than 1% times:

Event Timeline

Richard Antalik (ISS) changed the task status from Needs Triage to Confirmed.Sun, Jan 12, 6:53 AM
Richard Antalik (ISS) added a project: Cycles.

@Michael Soluyanov (crantisz) on my machine your file crashes in 2.81a and higher.
I can also confirm occasional visual discrepancy.

It may be actually caused by T67718: Point density texture crashes.
If I cause bug, save file, reopen, bug is not present anymore.

Bastien Montagne (mont29) changed the subtype of this task from "Report" to "Bug".Tue, Jan 14, 2:21 PM

The underlying issue is almost certainly the same.