When changing particle type from Emitter to Hair and then back to Emitter, effect is missing #58045

New Issue

Mal Duffin · 2018-11-25T11:29:39+01:00

Mal Duffin commented

2018-11-25 11:29:39 +01:00

System Information
Windows 10, GTX 1070

Blender Version
Broken: Blender 2.8 Alpha 2, 0c8b0771f2

Short description of error
When you change the Particle type from Emitter to Hair, and then back to Emitter, the effect is missing.

Exact steps for others to reproduce the error

Start a new scene
Select the default cube
Open the Particle panel
Click New

Play the animation. and you'll see particles emitting from the cube

Change the Particle type to Hair
Change the Particle type back to Emitter

Play the animation. The particles aren't emitting from the cube

**System Information** Windows 10, GTX 1070 **Blender Version** Broken: Blender 2.8 Alpha 2, 0c8b0771f26 **Short description of error** When you change the Particle type from Emitter to Hair, and then back to Emitter, the effect is missing. **Exact steps for others to reproduce the error** 1) Start a new scene 2) Select the default cube 3) Open the Particle panel 4) Click New Play the animation. and you'll see particles emitting from the cube 5) Change the Particle type to Hair 6) Change the Particle type back to Emitter Play the animation. The particles aren't emitting from the cube

Mal Duffin commented

2018-11-25 11:29:39 +01:00

Added subscriber: @MalDuffin

blender-admin commented

2018-11-25 11:29:39 +01:00

#58892 was marked as duplicate of this issue

Philipp Oeser commented

2018-11-27 10:40:43 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2018-11-27 10:40:43 +01:00

Confirmed, checking...

Everton Schneider commented

2018-12-12 03:10:32 +01:00

Added subscriber: @EvertonSchneider

Everton Schneider commented

2018-12-12 03:10:32 +01:00

Same issue reported on #58892.
Ok, I'm not sure if I'm allowed to do this here... let me know...
I have tested this one and I found that to solve this you need to change particle type manually. When you change the particle type to hair the particle type is set to "path" on "render as" option in the render dropdown inside the particle system. You need to set the particles to halo again and they will show up in the viewport again.

Same issue reported on #58892. Ok, I'm not sure if I'm allowed to do this here... let me know... I have tested this one and I found that to solve this you need to change particle type manually. When you change the particle type to hair the particle type is set to "path" on "render as" option in the render dropdown inside the particle system. You need to set the particles to halo again and they will show up in the viewport again.

Brecht Van Lommel commented

2019-02-13 18:05:53 +01:00

Added subscriber: @gase12

Ulysse Martin commented

2019-07-22 22:33:47 +02:00

Added subscriber: @you.le

Ulysse Martin commented

2019-07-22 22:33:47 +02:00

I can't reproduce this bug anymore in last 2.8 master (22/07/2019). Can you confirm that this is solved and close this report if all is right for you @MalDuffin ? Thanks

Everton Schneider commented

2019-07-22 23:00:12 +02:00

I tested here and there are no more particles missing BUT there is one setting that is not yet following the switch from emitter > hair > emitter. It's the "render as" dropdown in the particle render tab. It's "halo" when particles are "emitter" mode and it changes to "path" in "hair" mode but when you change back to "emitter" mode the "render as" remains as "path". It's not showing in the viewport as path because of this render type needs a cached particle system. You can confirm that by repeating the steps from the bug report but at the end just bake the simulation to see the "paths" in the viewport appearing. I think that this render type setting should follow the system default and change back to "halo" when the mode is switched back to "emitter".

Ulysse Martin commented

2019-07-22 23:15:40 +02:00

The issue mentionned by @EvertonSchneider can be fixed with this:

p.diff

in particle_system.c > void psys_changed_type(Object *ob, ParticleSystem *psys)

However, I don't know if this is the best place to put the code.

In this case, do we need to open another bug report?

The issue mentionned by @EvertonSchneider can be fixed with this: [p.diff](https://archive.blender.org/developer/F7623596/p.diff) in particle_system.c > void psys_changed_type(Object *ob, ParticleSystem *psys) However, I don't know if this is the best place to put the code. In this case, do we need to open another bug report?

Germano Cavalcante commented

2020-01-28 14:40:38 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-01-28 14:40:38 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Germano Cavalcante closed this issue

2020-01-28 14:40:38 +01:00

Germano Cavalcante self-assigned this 2020-01-28 14:40:38 +01:00

Germano Cavalcante commented

2020-01-28 14:40:38 +01:00

Thanks for the report.
According to comments, the bug originally reported has already been fixed.
Other problems must be reported separately.

Thanks for the report. According to comments, the bug originally reported has already been fixed. Other problems must be reported separately.

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When changing particle type from Emitter to Hair and then back to Emitter, effect is missing #58045