Volume blocky through glas #94394

New Issue

HEYPictures · 2021-12-26T17:50:30+01:00

HEYPictures commented

2021-12-26 17:50:30 +01:00

System Information
Operating system: Windows-10-10.0.22523-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2060 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.84

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-25 00:26, hash: 79012c6784

Short description of error
Volume is blocky when looked through the glass. When you disable the glass object everything looks good.

Exact steps for others to reproduce the error
Bake some volumes
Sanduhr.blend

2021-12-26 20-09-39.mp4

**System Information** Operating system: Windows-10-10.0.22523-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2060 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.84 **Blender Version** Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-25 00:26, hash: `79012c6784` **Short description of error** Volume is blocky when looked through the glass. When you disable the glass object everything looks good. **Exact steps for others to reproduce the error** Bake some volumes [Sanduhr.blend](https://archive.blender.org/developer/F12776814/Sanduhr.blend) ![Screenshot 2021-12-26 174811.png](https://archive.blender.org/developer/F12776716/Screenshot_2021-12-26_174811.png) [2021-12-26 20-09-39.mp4](https://archive.blender.org/developer/F12776868/2021-12-26_20-09-39.mp4)

HEYPictures commented

2021-12-26 17:50:30 +01:00

Added subscriber: @Florian-10

Fernando Alcala commented

2021-12-26 18:23:59 +01:00

Added subscriber: @Fernando-Alcala

Fernando Alcala commented

2021-12-26 18:23:59 +01:00

you can upload the file, it's just that we have to do the baking

HEYPictures changed title from ~~Volume blocky since ages~~ to Volume blocky throug glas

2021-12-26 20:09:14 +01:00

HEYPictures changed title from ~~Volume blocky throug glas~~ to Volume blocky through glas

2021-12-26 20:12:41 +01:00

Fernando Alcala commented

2021-12-26 22:18:19 +01:00

Increase "Min Light Bounces"

{F12777024, size=full}
{F12777025, size=full}

Increase "Min Light Bounces" {[F12777024](https://archive.blender.org/developer/F12777024/block_smoke_min_sam_1.png), size=full} {[F12777025](https://archive.blender.org/developer/F12777025/block_smoke_min_sam_2.png), size=full}

HEYPictures commented

2021-12-27 13:01:48 +01:00

Yes, it works with min 3 bounces but isn't that a bug anyways? I mean it shouldn't look that way by min 0 bounces.

Richard Antalik commented

2022-02-02 03:08:39 +01:00

Added subscriber: @iss

Richard Antalik commented

2022-02-02 03:08:39 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Richard Antalik commented

2022-02-02 03:08:39 +01:00

@Florian-10 I checked with few builds, from older 3.1 to latest and can't reproduce this issue. Can you check if it happens with latest alpha?

Also I rendered on GPU with optix, is that same in your case?

@Florian-10 I checked with few builds, from older 3.1 to latest and can't reproduce this issue. Can you check if it happens with latest alpha? Also I rendered on GPU with optix, is that same in your case?

Fernando Alcala commented

2022-02-02 04:26:21 +01:00

You should merge this report to #94425, I describe the issue better there. And I can still reproduce on the latest 3.1 beta and 3.2 alpha.

Richard Antalik commented

2022-02-03 03:37:10 +01:00

I guess I could merge this report, but I am not sure whether it is equivalent - I can reproduce #94425, but not this one.

In #94394#1299823, @Fernando-Alcala wrote:
And I can still reproduce on the latest 3.1 beta and 3.2 alpha.

Did you check file in this report?

It could be, that ultimately these have same root cause, but I would expect to reproduce both then.

I guess I could merge this report, but I am not sure whether it is equivalent - I can reproduce #94425, but not this one. ![#94394.png](https://archive.blender.org/developer/F12842995/T94394.png) > In #94394#1299823, @Fernando-Alcala wrote: > And I can still reproduce on the latest 3.1 beta and 3.2 alpha. Did you check file in this report? It could be, that ultimately these have same root cause, but I would expect to reproduce both then.

Fernando Alcala commented

2022-02-03 07:11:06 +01:00

It's because you simulated it at a lower resolution, making the blocks almost fill the hourglass. As I mentioned in the detailed report, this matters.

Here is the sim at 130 resolution, you can easily see the blocks.

Here it is at 32 resolution, the blocks are still there but you might miss them due to their size.

It's because you simulated it at a lower resolution, making the blocks almost fill the hourglass. As I mentioned in the detailed report, this matters. Here is the sim at 130 resolution, you can easily see the blocks. ![vol block 1.jpg](https://archive.blender.org/developer/F12843154/vol_block_1.jpg) Here it is at 32 resolution, the blocks are still there but you might miss them due to their size. ![vol block 2.jpg](https://archive.blender.org/developer/F12843153/vol_block_2.jpg) ![vol block 3.jpg](https://archive.blender.org/developer/F12843155/vol_block_3.jpg)

Richard Antalik commented

2022-02-03 08:59:59 +01:00

@Fernando-Alcala Thanks for clarification, I can see this much better with higher resolution. Will merge this report then.

Richard Antalik commented

2022-02-03 09:00:24 +01:00

Closed as duplicate of #94425

Richard Antalik closed this issue

2022-02-03 09:00:24 +01:00

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Volume blocky through glas #94394