Maniphest T76765

Particle System as flow source doesn't work
Confirmed, NormalBUG
Actions

Assigned To
None
Authored By
Richard Antalik (ISS)
May 14 2020, 9:06 PM
Tags
  • BF Blender
  • Nodes & Physics
Subscribers
Germano Cavalcante (mano-wii)
Iago Diogo Vasconcelos Mota (IagoMota)
Richard Antalik (ISS)

Description

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Radeon RX550/550 Series ATI Technologies Inc. 4.5.13587 Core Profile Context 20.4.1 26.20.15029.20013

Blender Version
Broken: version: 2.90 (sub 1), branch: master, commit date: 2020-05-14 02:19, hash: rB1fadda344ca5
Worked: blender-2.83-c26f470cfeea-windows64

Short description of error
Particle System as flow source doesn't work. Smoke is always emitted from mesh.

If file is opened in version that worked, smoke starts flowing from particles correctly. File doesn't have to be even re-saved in working version.

Because example file is reproducible only once, here are
Steps to create example file

  1. New General template
  2. Add UV Sphere
  3. Add particles to cube
  4. Particle Properties > Emission > Number = 50
  5. Particle Properties > Render > Render As = Object
  6. Particle Properties > Render > Instance Object = Sphere
  7. Particle Properties > Render > Scale = .6
  8. F3 > Quick Smoke
  9. Select Cube again
  10. Physics Properties > Flow Source > Flow Source = Particle System (doesn't invalidate cache)
  11. Physics Properties > Flow Source > Particle System = ParticleSettings (doesn't invalidate cache)

Exact steps for others to reproduce the error

T76765.blend838 KBDownload

  1. Open file
  2. Play animation

Related Objects

Event Timeline

Richard Antalik (ISS) created this task.May 14 2020, 9:06 PM
Richard Antalik (ISS) updated the task description.May 14 2020, 9:15 PM
Richard Antalik (ISS) added a project: Nodes & Physics.
Richard Antalik (ISS) updated the task description.
Richard Antalik (ISS) mentioned this in T76685: Force field can't expand smoke evenly..May 14 2020, 9:27 PM
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).May 15 2020, 3:44 PM

I managed to reproduce the problem the first time.
But after I updated some property, it recalculated and I can not repro again:

Richard Antalik (ISS) added a comment.May 18 2020, 8:35 AM
In T76765#932405, @Germano Cavalcante (mano-wii) wrote:

I managed to reproduce the problem the first time.
But after I updated some property, it recalculated and I can not repro again:

It should work right away in any case.
To reproduce again you need to create new file. I guess that with new file, cache must be incorrectly initialized somehow. I add how to create example file to report description .

Richard Antalik (ISS) updated the task description.May 18 2020, 8:59 AM
Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Confirmed.May 19 2020, 3:05 PM
Germano Cavalcante (mano-wii) changed the subtype of this task from "Report" to "Bug".

I can confirm that in steps 10. and 11. the cache is not invalidated.
I cannot confirm, in step 8, that the path does not exist. In my case it exists.

Richard Antalik (ISS) added a comment.May 19 2020, 3:43 PM
In T76765#934706, @Germano Cavalcante (mano-wii) wrote:

I can confirm that in steps 10. and 11. the cache is not invalidated.
I cannot confirm, in step 8, that the path does not exist. In my case it exists.

Re-tried and can't reproduce as well... In any case that would be not related to this bug if the cache was actually invalidated, so I will remove that.

Richard Antalik (ISS) updated the task description.May 19 2020, 3:43 PM
Iago Diogo Vasconcelos Mota (IagoMota) added a subscriber: Iago Diogo Vasconcelos Mota (IagoMota).Jul 15 2020, 8:23 PM
Dalai Felinto (dfelinto) moved this task from Backlog to Bugs on the Nodes & Physics board.Mar 2 2021, 11:29 AM