Bake All Dynamics doesn't work when baking particle hair #53083

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opened 5 years ago by JasonSchleifer · 17 comments

System Information
MacBook Pro, NVIDIA GeForce GT 750M, Intel Iris Pro
Mac OS 10.12.6

Blender Version
Broken: Blender 2.79 Hash: 5bd8ac9

Hitting the Bake All Dynamics to bake out particle hair doesn't do anything.

Exact steps for others to reproduce the error
Load the attached file.
Select the sphere.
Go to the particle panel.
Under Cache, click Bake All Dynamics.
Nothing happens.sph.blend

**System Information** MacBook Pro, NVIDIA GeForce GT 750M, Intel Iris Pro Mac OS 10.12.6 **Blender Version** Broken: Blender 2.79 Hash: 5bd8ac9 Hitting the Bake All Dynamics to bake out particle hair doesn't do anything. **Exact steps for others to reproduce the error** Load the attached file. Select the sphere. Go to the particle panel. Under Cache, click Bake All Dynamics. Nothing happens.[sph.blend](https://archive.blender.org/developer/F1041002/sph.blend)
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Changed status to: 'Open'

Changed status to: 'Open'
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Added subscriber: @JasonSchleifer

Added subscriber: @JasonSchleifer
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#70642 was marked as duplicate of this issue

#70642 was marked as duplicate of this issue
zeauro commented 5 years ago

Added subscriber: @zeauro

Added subscriber: @zeauro
zeauro commented 5 years ago

I can confirm that Bake All Dynamics button does not work with Hair particles.

It works for emitter particles or other physics simulations.

When you press this button with a scene containing a mix of cloth or soft body and Hair.
At the end of baking process, Hair particle system cache is calculated but not protected. Any object refresh can erase this cache.

If problem can not be solved easily ; at least, user should be warned.

I can confirm that Bake All Dynamics button does not work with Hair particles. It works for emitter particles or other physics simulations. When you press this button with a scene containing a mix of cloth or soft body and Hair. At the end of baking process, Hair particle system cache is calculated but not protected. Any object refresh can erase this cache. If problem can not be solved easily ; at least, user should be warned.

Added subscriber: @RomboutVersluijs

Added subscriber: @RomboutVersluijs

I also run into this issue today. Tried everything within my knowledge but it wont work. SIngle bake does work , but thats not useful with multiple items. How did they do the open movie projects without this?!?!?

Still dont get when you play frames it says "X amount frames on disk", but on reload these are not read?

I also run into this issue today. Tried everything within my knowledge but it wont work. SIngle bake does work , but thats not useful with multiple items. How did they do the open movie projects without this?!?!? Still dont get when you play frames it says "X amount frames on disk", but on reload these are not read?

Added subscriber: @thechode

Added subscriber: @thechode
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Added subscriber: @lichtwerk

Added subscriber: @lichtwerk
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FYI, the skipping of hair particles with Bake All Dynamics was introduced in 66918b3add.
On first sight, I dont see a particular reason to skip [tested non-skipping which seems to work], but this is ancient, so I guess this has never been considered a bug...

FYI, the skipping of hair particles with Bake All Dynamics was introduced in 66918b3add. On first sight, I dont see a particular reason to skip [tested non-skipping which seems to work], but this is ancient, so I guess this has never been considered a bug...
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Added subscribers: @BenoitAlexis, @grosgood

Added subscribers: @BenoitAlexis, @grosgood

Bake all in general doesnt do anything. It my last test, also cloth or other items wont start baking when using "Bake all". I haven tested 2.81 or latest build though.

Bake all in general doesnt do anything. It my last test, also cloth or other items wont start baking when using "Bake all". I haven tested 2.81 or latest build though.
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Added subscriber: @mano-wii

Added subscriber: @mano-wii
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This area has not been worked on for a long time.
Maybe it will be reworked with #73201 .
But for now I will mark it as Known Issue

This area has not been worked on for a long time. Maybe it will be reworked with [#73201 ](https://developer.blender.org/T73201). But for now I will mark it as `Known Issue`

Added subscriber: @gabrign

Added subscriber: @gabrign

Added subscriber: @gabe2252

Added subscriber: @gabe2252

Still broken in 2.90

Still broken in 2.90
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Reference: blender/blender#53083
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