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Maniphest T87331

Strange light source artifact in evee
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Description

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1650/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.72

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: rB02948a2cab44
Worked: (the newest version of Blender that worked as expected)

Short description of error
[
Evee engine: I am getting some unassessable issue with evee renders where some luminous glitch appears in some frames. It is not repeatable as re-rendering that frame doesn't produce the glitch. I am attaching the glitch images with a google drive link but I am sorry to not provide the file as it is a personal project. I have noticed that issue in many renders, in all cases I had Bloom turned on Which might be the root of the problem.

Google Drive link -

https://drive.google.com/drive/folders/1YnYw50wpp8Uby8CVwUPbk88pSwogF97D?usp=sharing

Exact steps for others to reproduce the error

The issue is not repeatable.

[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]

Related Objects

Event Timeline

Akash banerjee (neail) created this task.Apr 9 2021, 10:33 AM
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).EditedApr 9 2021, 10:52 AM

I am getting some unassessable issue with evee renders where some luminous glitch appears in some frames.

Issue is resolved recently, probably by commit rB5c4d24e1fd752a8a89d44d05e8e3f9b31f2d7db0.

Can you try again with latest 2.93.0 alpha??

Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Needs Information from User.Apr 9 2021, 2:33 PM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

Yes, please test this with the latest build from https://builder.blender.org/download/ and report back if this has been solved for you.

Akash banerjee (neail) added a comment.Apr 9 2021, 5:00 PM

sure, on it

Akash banerjee (neail) added a comment.Apr 9 2021, 5:04 PM
This comment was removed by Akash banerjee (neail).
Philipp Oeser (lichtwerk) added a comment.Apr 9 2021, 5:11 PM

rB5c4d24e1fd752a8a89d44d05e8e3f9b31f2d7db0 is the commit to the source code that probably fixed the issue.
If you click on the link you will get to a page that shows the changes to the source code in that commit.

Akash banerjee (neail) added a comment.Apr 9 2021, 5:57 PM

Accidentally found this,
2.93A- the RGB inputs are no accepted in Principle BSDF. don't know if its a bug or intentional-

2.93 A

,

2.92

Philipp Oeser (lichtwerk) added a comment.Apr 9 2021, 6:02 PM
In T87331#1143954, @Akash banerjee (neail) wrote:

Accidentally found this,
2.93A- the RGB inputs are no accepted in Principle BSDF. don't know if its a bug or intentional-

2.93 A

,

2.92

Please only one issue per report (so if this is unrelated, please report this separately)

Akash banerjee (neail) added a comment.Apr 9 2021, 6:23 PM

Unfortunately, 2.93 has not solved this.

link- https://drive.google.com/drive/folders/1zoTFiI82mbKGjzSBIBfA9mBkdUKhLjdZ?usp=sharing

Pratik Borhade (PratikPB2123) added a comment.Apr 10 2021, 2:56 AM

Hi Akash, can you test this attached file. ( just hit render after opening the file )

Mention here if you notice any white spots after rendering.

spekles in eevee (1).blend1 MBDownload

Pratik Borhade (PratikPB2123) added a comment.Apr 10 2021, 2:58 AM
  1. The particle system with evee rendering engine: The amount of particles in render are being overridden by the Viewport Display Amount factor. If I understand correctly the mentioned factor should only affect the display in viewport not in renders.

This can be separate report I guess.

Akash banerjee (neail) added a comment.EditedApr 10 2021, 7:17 AM
In T87331#1144199, @Pratik Borhade (PratikPB2123) wrote:
  1. The particle system with evee rendering engine: The amount of particles in render are being overridden by the Viewport Display Amount factor. If I understand correctly the mentioned factor should only affect the display in viewport not in renders.

This can be separate report I guess.

ok I will re-post and edit this.
Actually, both of them are renderer issue so I mentioned here.

Akash banerjee (neail) added a comment.Apr 10 2021, 7:19 AM
In T87331#1144198, @Pratik Borhade (PratikPB2123) wrote:

Hi Akash, can you test this attached file. ( just hit render after opening the file )

Mention here if you notice any white spots after rendering.

spekles in eevee (1).blend1 MBDownload

ok on it

Akash banerjee (neail) added a comment.Apr 10 2021, 7:20 AM
This comment was removed by Akash banerjee (neail).
Akash banerjee (neail) renamed this task from Strange light source artifact in evee and particle system error. to Strange light source artifact in evee .Apr 10 2021, 7:29 AM
Akash banerjee (neail) updated the task description. (Show Details)
Akash banerjee (neail) updated the task description. (Show Details)
Akash banerjee (neail) added a comment.EditedApr 10 2021, 7:42 AM

no effect without lights. no glitch.

even no glitches with Sun lamp, bloom, volumetrics, transparent film

neither with hdri and previous settings. (non transparent film)

it seems the issue is in heavy projects and the missing or out of sync data blocks are causing the problem.

Akash banerjee (neail) added a comment.Apr 10 2021, 10:51 AM

2.92 glitch percentage is 8.02
2.93A glitch percentage is 9.09

for nearly identical scenes

Akash banerjee (neail) changed the task status from Needs Information from User to Needs Triage.Apr 10 2021, 5:27 PM
Akash banerjee (neail) added a comment.Apr 14 2021, 11:39 AM

The glitch is mostly dependent on reflections on the scene, non reflective or metallic objects are not causing any problems.

Pratik Borhade (PratikPB2123) added a comment.Jul 30 2021, 2:09 PM

@Akash banerjee (neail) , does this still happen with fresh builds or 2.93LTS ?

Pratik Borhade (PratikPB2123) changed the task status from Needs Triage to Needs Information from User.Nov 11 2021, 1:52 PM

Hi Akash, various fixes has been done since 2.92. Could you please check again with recent version?: https://builder.blender.org/download/daily

Pratik Borhade (PratikPB2123) closed this task as Archived.Nov 22 2021, 7:09 AM

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.