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Maniphest T86770

still seeing blocky volumes in cycles
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Description

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.51

Blender Version
Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: rB0f45cab862b8
Worked: (newest version of Blender that worked as expected)

Short description of error
vdbs and volumes are rendering blocky in cycles

Exact steps for others to reproduce the error
I know this is an old issue, I was told two versions ago that this should be fixed in the following version but still there in 2.92 (see image).

Unless there are some settings I don't know about. The attached image has two objects that were converted to volume and you can see sharp lines in the volume 'box'. Makes it pretty much unusable for professional work.

Related Objects

Event Timeline

Andrew Walsh (andywalshart) created this task.Mar 20 2021, 7:47 PM
Andrew Walsh (andywalshart) added a comment.EditedMar 21 2021, 12:02 AM

cloud-test.avi73 MBDownload

Here's a quick few seconds of that cloud animated. Here's it's rotating slightly over about 70 frames. There's two clouds actually, one top left and one top right. Notice the squares.

Another quick note. The problem is greatly exaggerated at higher render sizes.

Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).Mar 24 2021, 4:44 PM

This looks like a duplicate of T81590: High Resolution VDB renders blocky artifacts in Cycles
It may also be related to T72811: Smoke sim glitch in Cycles

@Andrew Walsh (andywalshart) can you confirm?

Andrew Walsh (andywalshart) added a comment.Mar 25 2021, 12:28 AM

It does look similar to aspects of both of those. Such a shame as I use volumetrics in just about every scene. There's always high levels of noise alongside the blocky issue. Has there been any progress with the issue?

Germano Cavalcante (mano-wii) added a comment.Mar 26 2021, 8:36 PM

The developers are aware and the bug is already on the stack to be investigated.
Unfortunately, some problems take longer to be fixed.

I will merge the reports.

Germano Cavalcante (mano-wii) closed this task as a duplicate of T81590: High Resolution VDB renders blocky artifacts in Cycles.Mar 26 2021, 8:36 PM