Boids particle system crash #66383

New Issue

Joselu · 2019-07-03T17:49:40+02:00

Joselu commented

2019-07-03 17:49:40 +02:00

System Information
Windows 10 v1903

Blender Version
Broken: 2.80rc1
Worked: 2.79b

Short description of error
Whenever i play the animation in the timeline this Boids particle system crashes and closes 2.8.

Exact steps for others to reproduce the error

Open attached file and run animation.
Fireflies.blend

**System Information** Windows 10 v1903 **Blender Version** Broken: 2.80rc1 Worked: 2.79b **Short description of error** Whenever i play the animation in the timeline this Boids particle system crashes and closes 2.8. **Exact steps for others to reproduce the error** - Open attached file and run animation. [Fireflies.blend](https://archive.blender.org/developer/F7564486/Fireflies.blend)

Joselu commented

2019-07-03 17:49:40 +02:00

Added subscriber: @Xeluaxeman

Joselu commented

2019-07-03 18:08:59 +02:00

Forgot to tell it was made in 2.79 and it works fine there.

Gavin Scott commented

2019-07-03 18:22:06 +02:00

Added subscriber: @GavinScott

Gavin Scott commented

2019-07-03 18:22:06 +02:00

Duplicates here under Windows 10. On a debug build it emits "Critical error detected c0000374" from debug_heap.cpp runtime.

Failure appears to be in kdtree maintenance invoked from boid_brain code.

Duplicates here under Windows 10. On a debug build it emits "Critical error detected c0000374" from debug_heap.cpp runtime. Failure appears to be in kdtree maintenance invoked from boid_brain code.

Joselu commented

2019-07-03 21:28:02 +02:00

Yes and it makes 2.8 behave realy bad....
I had to reset 2.8 to default settings

Once i modified the file there was no problem.
File attached here:Fireflies.blend

Yes and it makes 2.8 behave realy bad.... I had to reset 2.8 to default settings Once i modified the file there was no problem. File attached here:[Fireflies.blend](https://archive.blender.org/developer/F7565110/Fireflies.blend)

Gavin Scott commented

2019-07-03 21:38:47 +02:00

Ok, maybe a better title would be "Boids particle system crash with imported 2.79 .blend"
What changes did you make that made it work?

Ok, maybe a better title would be "Boids particle system crash with imported 2.79 .blend" What changes did you make that made it work?

Joselu commented

2019-07-03 21:47:39 +02:00

It is probably that i had a mirror modifier for the half of each instanced firefly with a short animation of the wings in a cycled animation loop....?

In the new file the mirror modif is removed

It is probably that i had a mirror modifier for the half of each instanced firefly with a short animation of the wings in a cycled animation loop....? In the new file the mirror modif is removed

Joselu commented

2019-07-03 21:53:23 +02:00

There are 4 fireflies in a non renderable layer: white blue green n orange and all share same shape and animation.

Only thing different in each one is the body shader.

Select the emitter and change the preview mode to textured to see the real shape of them flying

There are 4 fireflies in a non renderable layer: white blue green n orange and all share same shape and animation. Only thing different in each one is the body shader. Select the emitter and change the preview mode to textured to see the real shape of them flying

Philipp Oeser commented

2019-07-04 11:56:35 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-07-04 11:56:35 +02:00

Even though author fixed the file, think we have to confirm this?

first note: also getting asserts trying to delete any of the emitters:
BLI_assert failed: /blender/source/blender/depsgraph/intern/depsgraph_query_iter.cc:210, deg_iterator_objects_step(), at 'DEG::deg_validate_copy_on_write_datablock(&object->id)'

Not sure whom to assign this to though, will check a bit myself...

Even though author fixed the file, think we have to confirm this? first note: also getting asserts trying to delete any of the emitters: `BLI_assert failed: /blender/source/blender/depsgraph/intern/depsgraph_query_iter.cc:210, deg_iterator_objects_step(), at 'DEG::deg_validate_copy_on_write_datablock(&object->id)'` Not sure whom to assign this to though, will check a bit myself...

Joselu commented

2019-07-04 15:15:32 +02:00

I am afraid the particle system becomes unstable when working with instaced objects and cycled shape keys etc like in my case. Yes it happend in different simulations that crashed again.... in both 2.79 n 2.8.
Sorry i am not Python programer to help here....
but it is clear that the particle systems need to be more revised and optimized for future releases.

I am afraid the particle system becomes unstable when working with instaced objects and cycled shape keys etc like in my case. Yes it happend in different simulations that crashed again.... in both 2.79 n 2.8. Sorry i am not Python programer to help here.... but it is clear that the particle systems need to be more revised and optimized for future releases.

Philipp Oeser commented

2020-02-26 17:01:56 +01:00

Blender seems to hang here:

Blender seems to hang here: ![image.png](https://archive.blender.org/developer/F8373229/image.png)

Jacques Lucke commented

2020-04-02 11:41:44 +02:00

Added subscriber: @JacquesLucke