Eevee Viewport and Render Blowouts/Glitches in Bloom pass
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System Information
Operating system: Darwin-17.7.0-x86_64-i386-64bit 64 Bits
Graphics card: NVIDIA GeForce GTX TITAN X OpenGL Engine NVIDIA Corporation 4.1 NVIDIA-10.33.0 387.10.10.10.40.133

Blender Version
Broken: version: 2.83 (sub 6), branch: master, commit date: 2020-03-04 04:24, hash: rBfb330dd11098
Also Broken: 2.82 official

Short description of error
Eevee Bloom+Screen Space Reflection causing intermittent viewport blowouts and randomly in renders too.

Exact steps for others to reproduce the error
(Sorry this file isn't as minimal as I'd have liked. But pared back from a big production scene.)

Open the file
Ctrl-F12 to render animation
1st frame is as expected (frame 101)
2nd frame (frame 102) has glitching blowouts

I'm getting nasty blocky blown out glitches with Eevee with SSR and Bloom enabled. In this file it's more related to the top teapot's complex shader I think. It is happening intermittently, and somewhat randomly in renders.

Frame 101

Frame 102

For some time I would get it in the viewport in rendered view, if I disabled Scene World in the Viewport Shading dropdown, but this is also intermittent.

Quitting and restarting Blender, or saving/reloading the file seems to make the problem return to the viewport. When it appears in the viewport, disabling and re-enabling SSR fixes the viewport temporarily.

Checking the eevee passes in the viewport when it occurs it is the Bloom pass where it is evident.

viewport

With my complex production scene this is happening on many (but not all) frames at render time, including CLI render. My only solution has been to delete the faulty frames and rerender them one at a time, as the second and subsequent frames are typically glitching out.

I'm sorry I can't be more concrete here. The most reliable repeatable example for me is in this file, Rendering the animation, and Frame 102 reliably glitches. I hope this is enough to hone in on the issue.

Blend file:

EeveeRenderGlitch.blend54 MBDownload

Event Timeline

Stephen Hamacek (hammers) created this task.Mar 6 2020, 2:24 PM

I cant reproduce the problem.
Must be Mac related.

Btw, it takes a long time to investigate a problem that needs to render an animation.
There is a reason why we asked for a simplified file.

Operating system: Windows-10-10.0.18941 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13586 Core Profile Context 19.50.01.05 26.20.15001.5006

would it work (read break) if we cut extra frames ? I'm guessing that it's a running out of resources problem..

Ankit Meel (ankitm) changed the task status from Needs Triage to Needs Information from User.Mar 6 2020, 6:25 PM

I wasn't really sure what to do, when the problem relates mostly to animation rendering results. For me first frame (101) usually renders fine, then second and (sometimes) subsequent frames break. For me The problem exists after 2 frames, So rendering just f101 and f102, is all that's needed for me. But I understand it's hard if it can't be reproduced, especially an intermittent issue.

I tried reducing the render frame range to just 101-102 and didn't get the glitch on 102. Leaving the range at 101-103 I still get the glitch on f102 regularly. So the frame range seems to be a factor too. I guess.

So I'll update the file to only render just those 3 frames, and maybe it will be reproducible on Mac? Also reduced the scene to just one light and one teapot.

For reference here's an illustration in video form, at least showing the rendering issue.

https://youtu.be/b8FBh-LfyfI

Generally as far as resources go I don't think my system is being pushed at all in memory, Vram or processing, and the artefacts happen semi randomly on some frames, not relating to any change or complexity in the scene. Hope you are able to reproduce the issue now.

Many thanks!

EeveeRenderGlitch2.blend54 MBDownload

As in your video, I couldn't get the white patches after turning off the Scene World in the Viewport Shading dropdown.
Is this the expected result ?

(click on images, and then on the F* number on top left to see file names)

 rB82c51d0edbab45f014b4d0b4c0a96c000c46e232
Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits
Graphics card: Intel(R) HD Graphics 6000 Intel Inc. 4.1 INTEL-12.10.12

I am at factory settings with no non-default addons, so there could be that.
Run mv ~/Library/Application\ Support/Blender ~/Desktop/ & retry.

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 comment again, we can always reopen then.

Eevee Viewport and Render Blowouts/Glitches in Bloom passClosed, ArchivedPublicActions

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Eevee Viewport and Render Blowouts/Glitches in Bloom pass
Closed, ArchivedPublic
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