Instanced hair not working well for EEVEE and workbench #55355

New Issue

Dalai Felinto · 2018-06-06T17:55:59+02:00

Dalai Felinto commented

2018-06-06 17:55:59 +02:00

Blender Version
Broken: 4165a57a6672 (blender2.8 HEAD)
Worked: 2.79a

Short description of error
Instanced hair invisible for EEVEE and workbench.

Exact steps for others to reproduce the error
Original file is the following. A basic plane with hair, that is grouped and instanced multiple times:

multi-hair.blend

The hair only shows/work for Cycles. For EEVEE and workbench it only shows the hair for the original object.

**Blender Version** Broken: 4165a57a6672 (blender2.8 HEAD) Worked: 2.79a **Short description of error** Instanced hair invisible for EEVEE and workbench. **Exact steps for others to reproduce the error** Original file is the following. A basic plane with hair, that is grouped and instanced multiple times: [multi-hair.blend](https://archive.blender.org/developer/F3603115/multi-hair.blend) The hair only shows/work for Cycles. For EEVEE and workbench it only shows the hair for the original object.

Dalai Felinto commented

2018-06-06 17:55:59 +02:00

Added subscriber: @dfelinto

Clément Foucault was assigned by Dalai Felinto

2018-06-06 17:56:35 +02:00

Dalai Felinto commented

2018-06-06 18:01:07 +02:00

Actually the hair is there but they are all in the same position as the original one.
A variation of this issue can be found here:

hairs.blend

Where we instance the hair in a new scene, but the hair position is the same as the original scene, even though the duplicator moved.

Actually the hair is there but they are all in the same position as the original one. A variation of this issue can be found here: [hairs.blend](https://archive.blender.org/developer/F3603173/hairs.blend) Where we instance the hair in a new scene, but the hair position is the same as the original scene, even though the duplicator moved.

Clément Foucault commented

2018-07-27 18:23:08 +02:00

Added subscriber: @Sergey

Clément Foucault commented

2018-07-27 18:23:08 +02:00

So here is the problem:

Hair simulation is done in world space. We need dupli_parent->obmat to correctly render dupligroups with hair.
But currently depsgraph abstract that from us, so we first need a way to access the duplicator properties and then we can make it work.

And given the current state of things I doubt it's on @Sergey quick todo list.

So here is the problem: Hair simulation is done in world space. We need dupli_parent->obmat to correctly render dupligroups with hair. But currently depsgraph abstract that from us, so we first need a way to access the duplicator properties and then we can make it work. And given the current state of things I doubt it's on @Sergey quick todo list.

blender-admin commented

2018-11-26 15:34:10 +01:00

This issue was referenced by blender/blender@14ea3130ee

This issue was referenced by blender/blender@14ea3130ee40ad7c5b538b01f07ee3a1d19a3025

Clément Foucault commented

2018-11-26 21:26:00 +01:00

Changed status from 'Open' to: 'Resolved'

Clément Foucault closed this issue

2018-11-26 21:26:00 +01:00

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