Hair particles: 'Use modifier Stack' option with simple children leads to texture disappearing in cycles [interpolated children are fine] #60485

New Issue

Yegor · 2019-01-14T02:07:45+01:00

Yegor commented

2019-01-14 02:07:45 +01:00

System Information
Operating system: Mint Tara
Graphics card: GTX 1080ti

Blender Version
Broken: 2.79 latest, 2.80 latest

Short description of error
The render engine can't read a texture while using the "use modifier stack" checkbox with simple children. Works fine with Interpolated or None.

Exact steps for others to reproduce the error
Open the attached blend file.
Set the viewport to render.
Activate the "use modifier stack" checkbox.
Texture disappears.

hair_use_modifier_stack_texture_bug.blend

**System Information** Operating system: Mint Tara Graphics card: GTX 1080ti **Blender Version** Broken: 2.79 latest, 2.80 latest **Short description of error** The render engine can't read a texture while using the "use modifier stack" checkbox with simple children. Works fine with Interpolated or None. **Exact steps for others to reproduce the error** Open the attached blend file. Set the viewport to render. Activate the "use modifier stack" checkbox. Texture disappears. [hair_use_modifier_stack_texture_bug.blend](https://archive.blender.org/developer/F6280527/hair_use_modifier_stack_texture_bug.blend)

Yegor commented

2019-01-14 02:07:45 +01:00

Added subscriber: @YegorSmirnov

blender-admin commented

2019-01-14 02:07:45 +01:00

#63777 was marked as duplicate of this issue

Philipp Oeser commented

2019-01-14 10:41:32 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-01-14 10:41:32 +01:00

Can confirm.

Not sure if #57922 is related (need to check)

Can confirm. Not sure if #57922 is related (need to check)

Philipp Oeser commented

2019-09-04 13:43:33 +02:00

Seems to work in Eevee

Philipp Oeser changed title from ~~Use modifier stack checked on simple hair children leads to texture disappearing~~ to Hair particles: 'Use modifier Stack' option with simple children leads to texture disappearing in cycles [interpolated children are fine]

2019-09-04 13:45:55 +02:00

Philipp Oeser commented

2019-09-04 16:00:42 +02:00

Added subscribers: @SerjMaiorov, @brecht, @ZedDB

mathieu auvray commented

2019-09-09 16:15:55 +02:00

Added subscriber: @MathieuAuvray

mathieu auvray commented

2019-09-09 16:15:55 +02:00

Same problem here on linux and OSX official builds for 2.80.

And I can confirm it's a Cycles related problem that doesn't show up with the EEVEE or Workbench render engines

Same problem here on linux and OSX official builds for 2.80. And I can confirm it's a Cycles related problem that doesn't show up with the EEVEE or Workbench render engines

Richard Antalik commented

2020-01-22 19:35:12 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Richard Antalik closed this issue

2020-01-22 19:35:12 +01:00

Richard Antalik self-assigned this 2020-01-22 19:35:12 +01:00

Philipp Oeser commented

2020-01-22 20:52:45 +01:00

Changed status from 'Resolved' to: 'Confirmed'

Philipp Oeser reopened this issue

2020-01-22 20:52:45 +01:00

Philipp Oeser commented

2020-01-22 20:52:45 +01:00

Sorry to say, but not resolved.
Since particles are EOL and will replaced with a new system along with a new Hair Object Type, will set to "Known Issue".

Sorry to say, but **not** resolved. Since particles are EOL and will replaced with a new system along with a new Hair Object Type, will set to "Known Issue".

Richard Antalik removed their assignment 2020-02-27 14:49:12 +01:00

Richard Antalik commented

2020-02-27 14:49:12 +01:00

Added subscriber: @iss

Will Falcon commented

2022-09-17 17:36:59 +02:00

Added subscriber: @WillFalcon

Will Falcon commented

2022-09-17 17:36:59 +02:00

Same issue. Blender 3.3

SleepyEngi commented

2022-10-12 07:47:25 +02:00

Added subscriber: @SleepyEngi

SleepyEngi commented

2022-10-12 07:47:25 +02:00

Having this issue as well.
Simple children with modifier stack

Same system, simple children without modifier stack on

I had to convert the hair system to curves and then delete the edit and turn off the modifier stack and then convert the curves to the hair system to preserve my edit while allowing me to turn off modifier stack option
(also note, if you uncheck and check the box without doing that, the hair just disappears irreversibly. seems like a bug.)

Don't really have the options I need for this with the new curves, and need specifically simple children because of the puffier look it gives hair that interpolated children do not

Having this issue as well. [Simple children with modifier stack](https://cdn.discordapp.com/attachments/869803909953245246/1029601556695359578/unknown.png) [Same system, simple children without modifier stack on ](https://cdn.discordapp.com/attachments/869803909953245246/1029618671443775570/unknown.png) I had to convert the hair system to curves and then delete the edit and turn off the modifier stack and then convert the curves to the hair system to preserve my edit while allowing me to turn off modifier stack option (also note, if you uncheck and check the box without doing that, the hair just disappears irreversibly. seems like a bug.) Don't really have the options I need for this with the new curves, and need specifically simple children because of the puffier look it gives hair that interpolated children do not

Philipp Oeser added the

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Hair particles: 'Use modifier Stack' option with simple children leads to texture disappearing in cycles [interpolated children are fine] #60485