Mantaflow animation flickering in Cycles render export #85254
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Reference: blender/blender#85254
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1660 Ti NVIDIA Corporation NVIDIA 461.09
Blender Version
Broken: version: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash:
5be9ef4177
Short description of error
Random frames render black or glitched out. Don't know why but this has happened many times with mantaflow fluid or smoke sims. Like this one [#81750 ]] and this [ https:*developer.blender.org/T77678 | #77678
If I re-render the black frames individually they render properly. The problem is it's random every time.
Water droplet - Cycles 1024 samples, Mantaflow 256 + 4 Mesh Noise.mov
I've included the file if you want to test out.
Water droplet.blend
Added subscriber: @Arken
Ok nevermind. I found the problem. I had a boolean modifier on the fluid domain and it would cause glitches on specific frames actually and not random frames. I changed the Boolean Solver to Exact and it solved the issue.
Now the only problem is that it takes 13 minutes to initialize and 1 minute to render. My system is a Ryzen 2700X with 32GB of RAM and it maxes out the RAM but I don't see it writing to the SSD the RAM usage goes up and down for 13 minutes and then it renders.
Added subscriber: @kevindietrich
Changed status from 'Needs Triage' to: 'Archived'
Alright then, closing this ticket since there was no bug.