Bake All Dynamics doesn't include all when Lifetime of particle system gets animated #83802

New Issue

Thorsten Hock · 2020-12-15T16:14:43+01:00

Thorsten Hock commented

2020-12-15 16:14:43 +01:00

System Information
Operating system: Windows 10
Graphics card: Quattro

Blender Version
Broken: 2.91.0
Worked:

Short description of error
When the lifetime setting of a particle system gets changed during an animation of the emitter and the animation gets baked, the number of frames are not aligned to the changed lifetime.

Initial lifetime of 100 will be changed during the animation to 500. Number of frames after bake is the frame end setting of the particle system plus the initial life time setting - in this case 100.

Exact steps for others to reproduce the error

Open attached file or (Based on the default startup):
- Set number of frames to 1.000
- Create a sphere - size .1
- Enter keyframe on frame 0 for location x,y,z
- Move sphere on x-axis to +10
- Enter keyframe on frame 250 for location x,y,z
- Add particle system to the sphere, 1.000 pieces, start frame 1, end frame 250, lifetime 100
- Add keyframe for lifetime on frame 1 and frame 49 with lifetime value 100
- Add keyframe for lifetime on frame 50 with a lifetime value of 500
Bake all Dynamics
You will see 351 frames in memory and not 751 as expected
Although the error is the same, rendering of animation does still work in Blender 2.83.5 but not in Blender 2.91.0 anymore
WORKAROUND: Set keyframe for lifetime on frame 0 with lifetime value 500
LiveTimeTest_002.blend

**System Information** Operating system: Windows 10 Graphics card: Quattro **Blender Version** Broken: 2.91.0 Worked: **Short description of error** When the lifetime setting of a particle system gets changed during an animation of the emitter and the animation gets baked, the number of frames are not aligned to the changed lifetime. Initial lifetime of 100 will be changed during the animation to 500. Number of frames after bake is the frame end setting of the particle system plus the initial life time setting - in this case 100. **Exact steps for others to reproduce the error** - Open attached file or (Based on the default startup): - Set number of frames to 1.000 - Create a sphere - size .1 - Enter keyframe on frame 0 for location x,y,z - Move sphere on x-axis to +10 - Enter keyframe on frame 250 for location x,y,z - Add particle system to the sphere, 1.000 pieces, start frame 1, end frame 250, lifetime 100 - Add keyframe for lifetime on frame 1 and frame 49 with lifetime value 100 - Add keyframe for lifetime on frame 50 with a lifetime value of 500 - Bake all Dynamics You will see 351 frames in memory and not 751 as expected Although the error is the same, rendering of animation does still work in Blender 2.83.5 but not in Blender 2.91.0 anymore **WORKAROUND:** Set keyframe for lifetime on frame 0 with lifetime value 500 [LiveTimeTest_002.blend](https://archive.blender.org/developer/F9538529/LiveTimeTest_002.blend)

Thorsten Hock commented

2020-12-15 16:14:43 +01:00

Added subscriber: @Nadir

Thorsten Hock changed title from ~~Bake All Dynamics doesn't include all when Life time of particle system gets animated~~ to Bake All Dynamics doesn't include all when Lifetime of particle system gets animated

2020-12-15 16:17:18 +01:00

Germano Cavalcante commented

2020-12-16 23:59:55 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-12-16 23:59:55 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Germano Cavalcante commented

2020-12-16 23:59:55 +01:00

I followed all the steps, but I was unable to reproduce the problem :\I cannot reproduce this with either the latest stable or current development versions of Blender:

Can you try the latest daily build? https://builder.blender.org/download/

Could you provide a simple blend file saved right before the bug occurs? So only a few steps are needed to trigger the bug.

I followed all the steps, but I was unable to reproduce the problem :\I cannot reproduce this with either the latest stable or current development versions of Blender: Can you try the latest daily build? https://builder.blender.org/download/ Could you provide a simple blend file saved right before the bug occurs? So only a few steps are needed to trigger the bug.

Thorsten Hock commented

2020-12-17 08:16:10 +01:00

I tested it withthe latest Alpha build version 2.92.0 Alpha and withthe latest release build 2.91.0 . Same result - if you Bake all Dynamics you do get 351 frames in memory. But it should be 751 because of the lifetime change at frame 50.

LiveTimeTest_002.blend

I tested it withthe latest Alpha build version 2.92.0 Alpha and withthe latest release build 2.91.0 . Same result - if you Bake all Dynamics you do get 351 frames in memory. But it should be 751 because of the lifetime change at frame 50. [LiveTimeTest_002.blend](https://archive.blender.org/developer/F9514537/LiveTimeTest_002.blend)

Germano Cavalcante commented

2020-12-28 20:23:21 +01:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Germano Cavalcante commented

2020-12-30 16:54:12 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Dalai Felinto commented

2022-05-09 15:18:14 +02:00

Added subscriber: @dfelinto

Dalai Felinto commented

2022-05-09 15:18:14 +02:00

Thanks for the report. Marking this as known issue since it depends on the old particle settings which is end of life .

Thanks for the report. Marking this as known issue since it depends on the [old particle settings which is end of life ](https://developer.blender.org/tag/nodes_physics/).

Philipp Oeser removed the

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Bake All Dynamics doesn't include all when Lifetime of particle system gets animated #83802