Fluid Sim Broken in Blender 2.82 #73927
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Reference: blender/blender#73927
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System Information
Operating system: Fedora 31 x86_64
Graphics card: GTX 760
Blender Version
Broken: 2.82
Worked: 2.81
Short description of error
Fluid Sim is not doing anything.
Exact steps for others to reproduce the error
Do the most simple fluid sim setup: Cube domain and a circle face for inflow inside the cube.
Bake.
Play.
Nothing shows.
Used this tutorial for Blender 2.82: https://www.youtube.com/watch?v=YdUWqkqcxzw
Also tried to make the inflow a volume instead of a circle. Tried different data file formats and also baking the mesh: Nothing.
fluid_sim.blend
Added subscriber: @bloody_albatross
Added subscriber: @TheloniousDrunk
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Needs User Info'
Can not reproduce this.
Can you give us exact steps you used to create this file?
I changed to using an ico sphere as inflow and that worked. Weird.
Maybe this is the same as bug ##73862 . I just had the case again that nothing appears and then I looked in the shell and saw these messages:
And simulation just silently failed.
Added subscriber: @ideasman42
You need to tell us exactly what causes the failure, include each action in dot-point form, so we can be sure we're matching your usage.
Otherwise we might fix a related error but not hit the same code-paths you're running into.
Added subscriber: @mont29
Changed status from 'Needs User Info' to: 'Archived'
Your inflow is not a closed volume, it's only a surface, so you need to enable some
Surface Emissonto get something out of it... No bug here.Changed status from 'Archived' to: 'Needs User Info'
The message:
Unable to save '/tmp/quit.blend': Too many open filespoints to a resource leak.@bloody_albatross can you check that this still happens in the latest daily build and give us the steps to reproduce the error?
Removed subscriber: @mont29
Sorry for my lack of replies, I'm occupied with other stuff. I was able to do fluid sims with a 2.83 build one or two days after this bug was fixed and didn't notice any resource leaks anymore. Didn't run it through valgrind though, just haven't noticed that problem anymore when working with blender.
(I had another issue that might not be issue, but intended behaviour: After all the fluid left the domain the whole domain was a solid cube again. So I just hid it after the fluid was all gone. Though I'm not 100% sure that was what happened since that means that one drop would have moved unusually fast in the last few frames of the simulation. And yes, it definitely was calculating those few frames where it was a solid block and not stopping the sim before.)
Thanks for the info, closing this issue for now then.
I was keen on getting a response because we might do a 2.82a release including the fix for #73862 (Can't save file because of too many open files), it would be no good if the issue wasn't completely resolved.
Changed status from 'Needs User Info' to: 'Archived'