Mantaflow - Flickering Square pattern of the particles #81011

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opened 2020-09-21 00:08:44 +02:00 by Alexander · 8 comments

System Information
Operating system: Windows 10
Graphics card: Quadro RTX 4000
CPU: Ryzen Threadripper 2950x
RAM: 64GB

Blender Version
Broken: (2.90.0 // 2.83.5)

Short description of error
I got the Problem both in the 2.83 LTS & 2.9 Version:
If i bake the fluid simulation in Mantaflow the particles of Bubble & Foam result in flickering squares: In one frame the particles are present and in the next frame they are abscent (in a square pattern). If I render an animation sequence out of this the video is flickering. I added the .blend-File for the used Settings and also two screenshots to demonstrate the square Pattern. Furthermore a rendered animation of another scene of mine shows the flickering result when rendered.

Mantaflow Flickering.avi

2020_09_19 - Fluid Test.blend

Frame135.png

frame136.png

Exact steps for others to reproduce the error
Just bake the attached .blend File (You need to change the saving location)

**System Information** Operating system: Windows 10 Graphics card: Quadro RTX 4000 CPU: Ryzen Threadripper 2950x RAM: 64GB **Blender Version** Broken: (2.90.0 // 2.83.5) **Short description of error** I got the Problem both in the 2.83 LTS & 2.9 Version: If i bake the fluid simulation in Mantaflow the particles of Bubble & Foam result in flickering squares: In one frame the particles are present and in the next frame they are abscent (in a square pattern). If I render an animation sequence out of this the video is flickering. I added the .blend-File for the used Settings and also two screenshots to demonstrate the square Pattern. Furthermore a rendered animation of another scene of mine shows the flickering result when rendered. [Mantaflow Flickering.avi](https://archive.blender.org/developer/F8904174/Mantaflow_Flickering.avi) [2020_09_19 - Fluid Test.blend](https://archive.blender.org/developer/F8904167/2020_09_19_-_Fluid_Test.blend) ![Frame135.png](https://archive.blender.org/developer/F8904168/Frame135.png) ![frame136.png](https://archive.blender.org/developer/F8904170/frame136.png) **Exact steps for others to reproduce the error** Just bake the attached .blend File (You need to change the saving location)
Author

Added subscriber: @Joeeuro

Added subscriber: @Joeeuro

Added subscriber: @mano-wii

Added subscriber: @mano-wii

I don't know if the problem with the video is the same as the file because the file seems to be a matter of resolution:
fluid_test0001-0250.mp4

Perhaps it is a limitation. I'll let the #nodes_physics team decide.

I don't know if the problem with the video is the same as the file because the file seems to be a matter of resolution: [fluid_test0001-0250.mp4](https://archive.blender.org/developer/F8916745/fluid_test0001-0250.mp4) Perhaps it is a limitation. I'll let the #nodes_physics team decide.
Member

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'
Member

Added subscriber: @ankitm

Added subscriber: @ankitm

Added subscriber: @Fernando-Alcala

Added subscriber: @Fernando-Alcala

Your resolution is too low.
Your setup. Domain 64 with particle settings: upres 1, potential and update radius 1
op.mp4
Domain 64 with default particle settings: upres 1, potential and update radius 2
64 default.mp4
Domain 64 with particle settings: upres 10, potential and update radius 4
64 max res.mp4
Domain 128 with default particle settings: upres 1, potential and update radius 2
128 default0001-0150.mp4
Domain 256 with particle settings: upres 1, potential and update radius 1
256 op.mp4

Your resolution is too low. Your setup. Domain 64 with particle settings: upres 1, potential and update radius 1 [op.mp4](https://archive.blender.org/developer/F10136670/op.mp4) Domain 64 with default particle settings: upres 1, potential and update radius 2 [64 default.mp4](https://archive.blender.org/developer/F10136667/64_default.mp4) Domain 64 with particle settings: upres 10, potential and update radius 4 [64 max res.mp4](https://archive.blender.org/developer/F10136677/64_max_res.mp4) Domain 128 with default particle settings: upres 1, potential and update radius 2 [128 default0001-0150.mp4](https://archive.blender.org/developer/F10136668/128_default0001-0150.mp4) Domain 256 with particle settings: upres 1, potential and update radius 1 [256 op.mp4](https://archive.blender.org/developer/F10136669/256_op.mp4)

Domain 768 with particle settings: upres 1, potential and update radius 1
76820001-0150.mp4

Domain 768 with particle settings: upres 1, potential and update radius 1 [76820001-0150.mp4](https://archive.blender.org/developer/F10141797/76820001-0150.mp4)
Philipp Oeser removed the
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Reference: blender/blender#81011
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