Mantaflow - Baking Noise( Upres ) causing glitches and flicker. #78207
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Reference: blender/blender#78207
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System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Quadro P4000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.70
Blender Version
Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash:
211b6c29f7
Worked: (newest version of Blender that worked as expected)
Short description of error
Hi
I have made a simple explosion and things were working fine until i baked the noise with upres factor 2.
The flames started to flicker and overall simulation became glitchy.
Every alternative frame of sim have broken flames and flicker.
enlcosed File.
Sim Preview without Noise Upres -0002-0051.mp4
Sim Preview with Noise Upres - Flicker and Glitch -0001-0050.mp4
Exact steps for others to reproduce the error
particle veloctiy explosion test.blend
Added subscriber: @CrossmindStudio
I did another test, and in this instead of baking fire+smoke and Noise separately, i went with final bake( instead of modular)
so the glitch didn't occur.
Hope this is useful. ( Enclosed Video)0002-0051.mp4
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscriber: @JacquesLucke
Changed status from 'Confirmed' to: 'Needs User Info'
Can you please try to reproduce this in the latest versions of Blender (both 2.90 and 2.91)? I do get some issues in the file, but I'm not sure if it is related to your original problem or if that has been solved by now. Are you able to reproduce the problem in a simpler file that takes less time for baking and/or needs fewer frames?
Hi Jacques.
Hope you are having a good day.
I did a quick recording just now. The first few minutes are just set up so you can skip that part. (6:30 ) timestamp for bug preview.
Issue still persists. When i baked noise in modular it was glitchy and each frame the fire density and flame looked different. But with final bake type it worked fine just like before.
uploading video here.bandicam 2020-08-13 18-14-13-289.mp4
This comment was removed by @CrossmindStudio
Added subscriber: @iss
Changed status from 'Needs User Info' to: 'Archived'
@CrossmindStudio in your latest video you show 2.83 version, not 2.90 or 2.91. I can't reproduce this issue in 2.91 so I will close this report. you may need to adjust workflow or there may be another bugs preventing this one to show up though, so if issues persists or you have another problems, please open new report.