Baking 'Selected to Active' ignores particle instances #76864

New Issue

Steffen Dünner · 2020-05-18T18:26:47+02:00

Steffen Dünner commented

2020-05-18 18:26:47 +02:00

System Information
Operating system: Linux-5.3.18-050318-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.64.00

Blender Version
Broken: version: 2.90 (sub 2), branch: master, commit date: 2020-05-18 15:35, hash: 35f9c3b9a4
Worked: Apparently never

Short description of error
I try to bake normals from an object with particles (rendered as a collection containing a single cube) to a simple plane.
During baking the particle instances aren't "seen" by the baker.
Even if I convert the particles to instances, the baking fails.
Only if I join all the cubes into one single object (CTRL+J) the baking produces the expected result:

Exact steps for others to reproduce the error

Open the attached blend file:
Click "Bake"
The texture in the upper left Image Editor turns grey.
Baking_Problem_v01.blend

**System Information** Operating system: Linux-5.3.18-050318-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.64.00 **Blender Version** Broken: version: 2.90 (sub 2), branch: master, commit date: 2020-05-18 15:35, hash: `35f9c3b9a4` Worked: Apparently never **Short description of error** I try to bake normals from an object with particles (rendered as a collection containing a single cube) to a simple plane. During baking the particle instances aren't "seen" by the baker. Even if I convert the particles to instances, the baking fails. Only if I join all the cubes into one single object (CTRL+J) the baking produces the expected result: ![Target_Bake.png](https://archive.blender.org/developer/F8541583/Target_Bake.png) **Exact steps for others to reproduce the error** - Open the attached blend file: - Click "Bake" The texture in the upper left Image Editor turns grey. [Baking_Problem_v01.blend](https://archive.blender.org/developer/F8541585/Baking_Problem_v01.blend)

Steffen Dünner commented

2020-05-18 18:26:47 +02:00

Added subscriber: @SteffenD

Richard Antalik commented

2020-05-19 15:08:46 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-05-19 15:08:46 +02:00

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

Richard Antalik commented

2020-05-19 15:08:46 +02:00

Can you upload 2.7 file that works?

Steffen Dünner commented

2020-05-19 16:12:01 +02:00

Sadly no, it seems.

First I recreated a similar scene as above in 2.79 last nightly -> it crashed
2.79b final didn't crash but also didn't "see" the instanced cubes. It rendered an empty grey map.

I remember that I once did it, maybe in an even earlier version of Blender (that's why I added "IIRC" to the version that worked).

Sadly it turns out to not work in 2.79 and in 2.8x.

Sadly no, it seems. First I recreated a similar scene as above in 2.79 last nightly -> it crashed 2.79b final didn't crash but also didn't "see" the instanced cubes. It rendered an empty grey map. I remember that I once did it, maybe in an even earlier version of Blender (that's why I added "IIRC" to the version that worked). Sadly it turns out to not work in 2.79 and in 2.8x.

Richard Antalik commented

2020-05-19 16:37:17 +02:00

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

Richard Antalik commented

2020-05-19 16:37:17 +02:00

In #76864#934804, @SteffenD wrote:

I asked only because I wouldn't expect this to work

I have been able to bake normals, if I used Particle Instance modifier on cube, and then baked cube to target, which is essentially what you did, but a bit more procedural. Perhaps this was also a method that worked prior to 2.8?

> In #76864#934804, @SteffenD wrote: I asked only because I wouldn't expect this to work I have been able to bake normals, if I used Particle Instance modifier on cube, and then baked cube to target, which is essentially what you did, but a bit more procedural. Perhaps this was also a method that worked prior to 2.8?

Steffen Dünner commented

2020-05-19 16:44:38 +02:00

I have been able to bake normals, if I used Particle Instance modifier on cube, and then baked cube to target, which is essentially what you did, but a bit more procedural. Perhaps this was also a method that worked prior to 2.8?

Ah OK, that might be it... I'll give it a try with 2.79 and 2.8x / 2.90 soon.

EDIT: Yes, it works in 2.8x / 2.90 when using the Particle Instance modifier.

> I have been able to bake normals, if I used Particle Instance modifier on cube, and then baked cube to target, which is essentially what you did, but a bit more procedural. Perhaps this was also a method that worked prior to 2.8? Ah OK, that might be it... I'll give it a try with 2.79 and 2.8x / 2.90 soon. EDIT: Yes, it works in 2.8x / 2.90 when using the Particle Instance modifier. ![Target_Bake.png](https://archive.blender.org/developer/F8543342/Target_Bake.png)

Germano Cavalcante changed title from ~~Particle instances aren't rendered during baking~~ to Baking 'Selected to Active' ignores particle instances

2020-05-20 15:19:42 +02:00

Germano Cavalcante commented

2020-05-20 15:19:42 +02:00

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

Germano Cavalcante commented

2020-05-20 15:21:34 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-05-20 15:21:34 +02:00

I tested in versions 2.73 and 2.79 but the problem is also seen in them.
Here is the file for blender 2.73:
Baking_Problem_2_73.blend

I tested in versions 2.73 and 2.79 but the problem is also seen in them. Here is the file for blender 2.73: [Baking_Problem_2_73.blend](https://archive.blender.org/developer/F8544831/Baking_Problem_2_73.blend)

Philipp Oeser commented

2020-12-09 17:31:48 +01:00

Closed as duplicate of #43553

Philipp Oeser closed this issue

2020-12-09 17:31:48 +01:00

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Baking 'Selected to Active' ignores particle instances #76864