eevee volumetrics renders glitchly #77967

New Issue

vincent · 2020-06-17T21:16:59+02:00

vincent commented

2020-06-17 21:16:59 +02:00

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: AMD Radeon(TM) R5 Graphics ATI Technologies Inc. 4.5.13403 Core Profile Context 15.201.1601.0

Blender Version
Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: 211b6c29f7
Worked: Can't check

Short description of error
I have a test scene where I have a cubic volumetric, it worksin eevee, but when I render it, each frame has a random chance of rendering like if my camera was in the middle of a super-dense fog of the same color without lights. I think it makes a number of steps of rendering like in the viewport, but a random number of steps.

This is my results:
0000-0010.mp4
test0000-0010.mp4

Exact steps for others to reproduce the error

open attached file
render animation (CRTL + F12)
volumetricTest.blend
or
create general new project
select and delete everything
add a cube
apply it a principled volumetric
change color (to see the effect, optional)
add light sources
add camera (and place it)
Change the resolution for faster results (I did it, but it did the bug on every resolution I put, I have a portable pc)
render animation (CRTL + F12)

**System Information** Operating system: Windows-10-10.0.17763-SP0 64 Bits Graphics card: AMD Radeon(TM) R5 Graphics ATI Technologies Inc. 4.5.13403 Core Profile Context 15.201.1601.0 **Blender Version** Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: `211b6c29f7` Worked: Can't check **Short description of error** I have a test scene where I have a cubic volumetric, it worksin eevee, but when I render it, each frame has a random chance of rendering like if my camera was in the middle of a super-dense fog of the same color without lights. I think it makes a number of steps of rendering like in the viewport, but a random number of steps. This is my results: [0000-0010.mp4](https://archive.blender.org/developer/F8632039/0000-0010.mp4) [test0000-0010.mp4](https://archive.blender.org/developer/F8632053/test0000-0010.mp4) **Exact steps for others to reproduce the error** - open attached file - render animation (CRTL + F12) [volumetricTest.blend](https://archive.blender.org/developer/F8628640/volumetricTest.blend) or - create general new project - select and delete everything - add a cube - apply it a principled volumetric - change color (to see the effect, optional) - add light sources - add camera (and place it) - Change the resolution for faster results (I did it, but it did the bug on every resolution I put, I have a portable pc) - render animation (CRTL + F12)

vincent commented

2020-06-17 21:16:59 +02:00

Added subscriber: @Gyoo18

Germano Cavalcante commented

2020-06-18 19:34:49 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-06-18 19:34:49 +02:00

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

Germano Cavalcante commented

2020-06-18 19:34:49 +02:00

This is the image generated with an attached file.

The animation as well as the image has no glitch here.
Please try the latest daily build: https://builder.blender.org/download/

Operating system: Windows-10-10.0.18941 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13596 Core Profile Context 20.10.19.02 27.20.1019.2002

This is the image generated with an attached file. ![untitled.png](https://archive.blender.org/developer/F8630783/untitled.png) The animation as well as the image has no glitch here. Please try the latest daily build: https://builder.blender.org/download/ ---- **Operating system:** Windows-10-10.0.18941 64 Bits **Graphics card:** Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13596 Core Profile Context 20.10.19.02 27.20.1019.2002

vincent commented

2020-06-19 14:44:47 +02:00

Weird, this is my results:
0000-0010.mp4
test0000-0010.mp4
And nowthat i'm testing it again, even the viewport is glitchy. It refuses to render and when I do things like selecting lamps or moving them or deselecting everything etch., it renders, but it doesn't renders eveytime I do those actions.

Also, for personal reasons, I can't download betas or updates, I got my version from the microsoft store and it updates by itself.

Weird, this is my results: [0000-0010.mp4](https://archive.blender.org/developer/F8632039/0000-0010.mp4) [test0000-0010.mp4](https://archive.blender.org/developer/F8632053/test0000-0010.mp4) And nowthat i'm testing it again, even the viewport is glitchy. It refuses to render and when I do things like selecting lamps or moving them or deselecting everything etch., it renders, but it doesn't renders eveytime I do those actions. Also, for personal reasons, I can't download betas or updates, I got my version from the microsoft store and it updates by itself.

Germano Cavalcante commented

2020-06-19 15:35:41 +02:00

Does this file work correctly in another blender version? (2.82 for exemple)
https://www.blender.org/download/releases/2-82/

Does this file work correctly in another blender version? (2.82 for exemple) https://www.blender.org/download/releases/2-82/

vincent commented

2020-06-19 15:41:36 +02:00

Sorry, it was created in 2.83 and I'm not allowed to download other versions.

vincent commented

2020-06-19 15:42:59 +02:00

I'm not the administrator of this computer, I can't download other piece of software.

Germano Cavalcante commented

2020-06-19 15:46:23 +02:00

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

Clément Foucault commented

2020-07-02 16:55:10 +02:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

vincent commented

2020-10-15 23:04:09 +02:00

update: using blender 2.90.1 and the exact same laptop.

volumetric settings:
4 px
128 samples

test0000-0010.mp4
test0000-0040.mp4

volumetric settings:
8 px
36 samples

test0000-0040.mp4

It seems like it randomly changes density, and from vloumetrics only in the cube to volumetrics for the hole world each time I update the viewport.

also seems to be a screen-space related issue because as soon as the cube leaves the view, there is no more bug.

test0000-0040.mp4

Thankyou for your time.

update: using blender 2.90.1 and the exact same laptop. volumetric settings: 4 px 128 samples [test0000-0010.mp4](https://archive.blender.org/developer/F8996291/test0000-0010.mp4) [test0000-0040.mp4](https://archive.blender.org/developer/F8996310/test0000-0040.mp4) volumetric settings: 8 px 36 samples [test0000-0040.mp4](https://archive.blender.org/developer/F8996322/test0000-0040.mp4) It seems like it randomly changes density, and from vloumetrics only in the cube to volumetrics for the hole world each time I update the viewport. also seems to be a screen-space related issue because as soon as the cube leaves the view, there is no more bug. [test0000-0040.mp4](https://archive.blender.org/developer/F8996341/test0000-0040.mp4) Thankyou for your time.

vincent commented

2021-02-19 17:20:19 +01:00

Hi, in Blender 2.91.2 I have been able to solve this issue by making some sort of connection between an input geometry or object info node and the volumetric BSDF node and it worked like a charm. Although, it is worth noting that the issue still happens if I don't do so. I'll also add that someone updated all the graphic cards drivers of the pc.

vincent commented

2022-12-24 23:34:26 +01:00

Hi, as of blender 3.4.1 the issue seems to be resolved.

Germano Cavalcante commented

2022-12-26 14:20:23 +01:00

Changed status from 'Needs Developer To Reproduce' to: 'Resolved'

Germano Cavalcante closed this issue

2022-12-26 14:20:23 +01:00

Germano Cavalcante self-assigned this 2022-12-26 14:20:23 +01:00

Germano Cavalcante commented

2022-12-26 14:20:23 +01:00

Thanks for the feedback. I also tested here and the problem really seems to be solved.
Could it be that it had something to do with {#101402}?

Anyway, I'm closing it as resolved.

Thanks for the feedback. I also tested here and the problem really seems to be solved. Could it be that it had something to do with {#101402}? Anyway, I'm closing it as resolved.

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eevee volumetrics renders glitchly #77967