Particles: texture density vs density vertex group [very different result] #87114

New Issue

Arca Irtem · 2021-04-01T13:34:26+02:00

Arca Irtem commented

2021-04-01 13:34:26 +02:00

Operating system: Windows 10
Graphics card:2060 Super

Broken: 2.92
Worked: 2.92

Hello developers! I student and texture particle density not working properly. It should work like “vertex group (destiny)”. Sample:

desinty.blend

Operating system: Windows 10 Graphics card:2060 Super Broken: 2.92 Worked: 2.92 Hello developers! I student and texture particle density not working properly. It should work like “vertex group (destiny)”. Sample: ![2.png](https://archive.blender.org/developer/F9916834/2.png) [desinty.blend](https://archive.blender.org/developer/F9916836/desinty.blend)

Arca Irtem commented

2021-04-01 13:34:26 +02:00

Added subscriber: @Arcettin144p

blender-admin commented

2021-04-01 13:34:26 +02:00

#87519 was marked as duplicate of this issue

Arca Irtem changed title from ~~Logical Density Error (developers inside)~~ to Logical Density Error (developers inside)-(report)

2021-04-02 15:00:33 +02:00

Arca Irtem commented

2021-04-02 15:00:33 +02:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Arca Irtem changed title from ~~Logical Density Error (developers inside)-(report)~~ to Logical Density Error (developers inside)-(BUG)

2021-04-03 22:34:49 +02:00

Arca Irtem changed title from ~~Logical Density Error (developers inside)-(BUG)~~ to Logical Density Error (developers inside)-(BUG) HELP

2021-04-05 15:15:28 +02:00

Arca Irtem changed title from ~~Logical Density Error (developers inside)-(BUG) HELP~~ to Logical Density Error (developers inside)-(BUG)

2021-04-06 17:57:23 +02:00

Philipp Oeser was assigned by Arca Irtem

2021-04-06 17:57:23 +02:00

Philipp Oeser commented

2021-04-16 10:02:59 +02:00

Added subscriber: @ideasman42

Philipp Oeser commented

2021-04-16 10:03:40 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Needs Triage'

Philipp Oeser removed their assignment 2021-04-16 10:03:40 +02:00

Philipp Oeser commented

2021-04-16 10:03:40 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-04-16 10:03:40 +02:00

I will have a look, but please dont assign developers yourself.

Philipp Oeser changed title from ~~Logical Density Error (developers inside)-(BUG)~~ to Particles: texture density

2021-04-16 10:04:20 +02:00

Arca Irtem commented

2021-04-16 14:23:42 +02:00

In #87114#1147347, @lichtwerk wrote:
I will have a look, but please dont assign developers yourself.

I tried to reach your company from everywhere but nobody answered sorry.

> In #87114#1147347, @lichtwerk wrote: > I will have a look, but please dont assign developers yourself. I tried to reach your company from everywhere but nobody answered sorry.

Arca Irtem commented

2021-04-16 14:27:12 +02:00

In #87114#1147347, @lichtwerk wrote:
I will have a look, but please dont assign developers yourself.

If we can fix it, it will be a revolution. Because character designers will love it.

> In #87114#1147347, @lichtwerk wrote: > I will have a look, but please dont assign developers yourself. If we can fix it, it will be a revolution. Because character designers will love it.

Arca Irtem commented

2021-04-16 14:40:43 +02:00

In #87114#1147347, @lichtwerk wrote:
I will have a look, but please dont assign developers yourself.

density rules were regulated in 2005. this means that the coding has to be rewritten.

> In #87114#1147347, @lichtwerk wrote: > I will have a look, but please dont assign developers yourself. density rules were regulated in 2005. this means that the coding has to be rewritten.

Philipp Oeser commented

2021-04-16 15:31:32 +02:00

Yeah, distributing via vertex group and distributing via texture have differences.
Neither garantee the exact amount of particles to actually be visible/alive (but vertex groups get you closer to that count)

I would classify this as a Known Issue, but would not hold my breath here.

Yeah, distributing via vertex group and distributing via texture have differences. Neither garantee the exact amount of particles to actually be visible/alive (but vertex groups get you closer to that count) I would classify this as a Known Issue, but would not hold my breath here.

Philipp Oeser changed title from ~~Particles: texture density~~ to Particles: texture density vs density vertex group [very different result]

2021-04-16 15:32:07 +02:00

Philipp Oeser commented

2021-04-16 15:32:20 +02:00

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

Arca Irtem commented

2021-04-16 16:10:04 +02:00

In #87114#1147581, @lichtwerk wrote:
Yeah, distributing via vertex group and distributing via texture have differences.
Neither garantee the exact amount of particles to actually be visible/alive (but vertex groups get you closer to that count)

I would classify this as a Known Issue, but would not hold my breath here.

So is there a way to fix this? rival company solved this.

> In #87114#1147581, @lichtwerk wrote: > Yeah, distributing via vertex group and distributing via texture have differences. > Neither garantee the exact amount of particles to actually be visible/alive (but vertex groups get you closer to that count) > > I would classify this as a Known Issue, but would not hold my breath here. So is there a way to fix this? rival company solved this.

Philipp Oeser commented

2021-04-16 16:29:50 +02:00

In #87114#1147617, @Arcettin144p wrote:
So is there a way to fix this? rival company solved this.

Sure, source code is open for you to check and improve. This is not about rivaling companies, blender is a community where everyone who wants can participate.
Have a look at psys_thread_context_init_distribute and usages of ParticleTexture->exist

Unfortunately, the "old" particle system is not an official priority any more, in fact it is End Of Life, see Nodes & Physics under https://wiki.blender.org/wiki/Modules

> In #87114#1147617, @Arcettin144p wrote: > So is there a way to fix this? rival company solved this. Sure, source code is open for you to check and improve. This is not about rivaling companies, blender is a community where everyone who wants can participate. Have a look at `psys_thread_context_init_distribute` and usages of `ParticleTexture->exist` Unfortunately, the "old" particle system is not an official priority any more, in fact it is End Of Life, see Nodes & Physics under https://wiki.blender.org/wiki/Modules

Arca Irtem commented

2021-04-16 16:40:25 +02:00

In #87114#1147639, @lichtwerk wrote:

In #87114#1147617, @Arcettin144p wrote:
So is there a way to fix this? rival company solved this.

Sure, source code is open for you to check and improve. This is not about rivaling companies, blender is a community where everyone who wants can participate.
Have a look at psys_thread_context_init_distribute and usages of ParticleTexture->exist

Unfortunately, the "old" particle system is not an official priority any more, in fact it is End Of Life, see Nodes & Physics under https://wiki.blender.org/wiki/Modules

man you're missing a huge prize. If I succeed in this, will I be recruited as an intern?

> In #87114#1147639, @lichtwerk wrote: >> In #87114#1147617, @Arcettin144p wrote: >> So is there a way to fix this? rival company solved this. > > Sure, source code is open for you to check and improve. This is not about rivaling companies, blender is a community where everyone who wants can participate. > Have a look at `psys_thread_context_init_distribute` and usages of `ParticleTexture->exist` > > Unfortunately, the "old" particle system is not an official priority any more, in fact it is End Of Life, see Nodes & Physics under https://wiki.blender.org/wiki/Modules man you're missing a huge prize. If I succeed in this, will I be recruited as an intern?

Philipp Oeser commented

2021-04-16 17:08:01 +02:00

In #87114#1147640, @Arcettin144p wrote:
man you're missing a huge prize.

Which prize would that be :) ?

If I succeed in this, will I be recruited as an intern?

I dont decide those things, you'll at least be rewarded with eternal indestructible fame in form of a source commit [and a better blender of course :)]

> In #87114#1147640, @Arcettin144p wrote: > man you're missing a huge prize. Which prize would that be :) ? > If I succeed in this, will I be recruited as an intern? I dont decide those things, you'll at least be rewarded with eternal indestructible fame in form of a source commit [and a better blender of course :)]

Arca Irtem commented

2021-04-16 17:16:15 +02:00

In #87114#1147654, @lichtwerk wrote:

In #87114#1147640, @Arcettin144p wrote:
man you're missing a huge prize.

Which prize would that be :) ?

If I succeed in this, will I be recruited as an intern?

I dont decide those things, you'll at least be rewarded with eternal indestructible fame in form of a source commit [and a better blender of course :)]

you would be senior. I am a student too and density calculations were scary

> In #87114#1147654, @lichtwerk wrote: >> In #87114#1147640, @Arcettin144p wrote: >> man you're missing a huge prize. > Which prize would that be :) ? > >> If I succeed in this, will I be recruited as an intern? > I dont decide those things, you'll at least be rewarded with eternal indestructible fame in form of a source commit [and a better blender of course :)] you would be senior. I am a student too and density calculations were scary

Arca Irtem commented

2021-04-20 06:47:00 +02:00

In #87114#1147654, @lichtwerk wrote:

In #87114#1147640, @Arcettin144p wrote:
man you're missing a huge prize.

Which prize would that be :) ?

If I succeed in this, will I be recruited as an intern?

I dont decide those things, you'll at least be rewarded with eternal indestructible fame in form of a source commit [and a better blender of course :)]

addons c++ or pyhton ?? Which one should I use?

> In #87114#1147654, @lichtwerk wrote: >> In #87114#1147640, @Arcettin144p wrote: >> man you're missing a huge prize. > Which prize would that be :) ? > >> If I succeed in this, will I be recruited as an intern? > I dont decide those things, you'll at least be rewarded with eternal indestructible fame in form of a source commit [and a better blender of course :)] addons c++ or pyhton ?? Which one should I use?

Philipp Oeser removed the

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Particles: texture density vs density vertex group [very different result] #87114