Mantaflow Fluid Sim fails when simulation starts after frame 1 #72860
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Reference: blender/blender#72860
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System Information
Operating system: Windows 10 1903
Graphics card: GTX 1060 6GB
Blender Version
Broken: 2.82 Alpha,
56ef761381, 2019-12-30Short description of error
Mantaflow Fluid Sim ignores Liquid Geometry when simulation starts later than frame 1. It also doesn't work if scene start frame in output settings is set to the same frame the mantaflow sim starts. So it seems unrelated to the start frame in output settings. Just setting any other frame later than frame 1 results in the liquid geometry not taking part in the simulation.
Exact steps for others to reproduce the error
Based on the default startup, create a cube and set as Fluid>Domain>Liquid and make sure to uncheck and recheck the Liquid checkbox because of the checkbox appearing to being enabled by default in this version. This is a known bug though.
Create another cube inside the domain and set as Fluid>Flow>Liquid>Geometry.
In the cache settings of the fluid domain set the start frame of the simulation to anything greater than 1.
Bake the fluid sim by pressing "Bake Data" in the Settings tab of the fluid domain.
Result: No fluid particles are generated.
Thanks for the great work!
Added subscriber: @Accelero
Added subscriber: @MiroHorvath
Hi @Accelero,
I'm having the same problem(version ed32db06c124 from 16 dec 2019), but do I understand well that you're able to get it working(particles generated) if start frame is set to 1? It seems so from your description... in my case whatever I set as start/end frame it doesn't generate particles at all.
Added subscriber: @mano-wii
Changed status from 'Needs Triage' to: 'Confirmed'
Starting from frame 2 also works, but I can confirm the problem with frame 3 or more.
@MiroHorvath, @mano-wii I can confirm: No Particles are generated in my case, when I start on frame 3 or later. If I start on frame 1 or 2 it works as expected.
This issue was referenced by
689a873029Changed status from 'Confirmed' to: 'Resolved'
Added subscriber: @theinfinites
having the same issue. has it been solved?
With the latest master it should be possible to bake with any start frame (even negative startframes are allowed). Please reopen if there is still a problem!