Inconsistent Behavior of Set Material Node #94232

New Issue

Gerstmann Bradley · 2021-12-18T19:31:28+01:00

Gerstmann Bradley commented

2021-12-18 19:31:28 +01:00

System Information
Operating system: Windows-10-10.0.17134-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 466.11

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: (newest version of Blender that worked as expected)

Short description of error

Figure 1. The desired result.
Figure 2. The issue.
Figure 3. The solution.
Set Material.blend

Another solution is to just add an empty material slot on the object in the Properties Editor (this will have the same consequence as your solution -- reserves one index for the default material, then another for the newly assigned material).

**System Information** Operating system: Windows-10-10.0.17134-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 466.11 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: (newest version of Blender that worked as expected) **Short description of error** ![image.png](https://archive.blender.org/developer/F12761649/image.png) ![image.png](https://archive.blender.org/developer/F12761651/image.png) ![image.png](https://archive.blender.org/developer/F12761654/image.png) Figure 1. The desired result. Figure 2. The issue. Figure 3. The solution. [Set Material.blend](https://archive.blender.org/developer/F12761659/Set_Material.blend) Another solution is to just add an empty material slot on the object in the Properties Editor (this will have the same consequence as your solution -- reserves one index for the default material, then another for the newly assigned material).

Gerstmann Bradley commented

2021-12-18 19:31:28 +01:00

Added subscriber: @Bradley_G

Philipp Oeser commented

2021-12-22 14:32:30 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-12-22 14:32:30 +01:00

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

Philipp Oeser commented

2021-12-22 14:32:30 +01:00

Not sure this is a bug.

If there is no material at all to begin with, geometry nodes seems to not add an index/slot for the default material.
So there is no distinction between the newly assigned material and the default material anymore.
Another solution is to just add an empty material slot on the object in the Properties Editor (this will have the same consequence as your solution -- reserves one index for the default material, then another for the newly assigned material).

Would need to gather input from #geometry_nodes devs here...

Not sure this is a bug. If there is no material at all to begin with, geometry nodes seems to not add an index/slot for the default material. So there is no distinction between the newly assigned material and the default material anymore. Another solution is to just add an empty material slot on the object in the Properties Editor (this will have the same consequence as your solution -- reserves one index for the default material, then another for the newly assigned material). Would need to gather input from #geometry_nodes devs here...

Gerstmann Bradley commented

2021-12-22 14:38:54 +01:00

Added subscriber: @HooglyBoogly

Gerstmann Bradley commented

2021-12-22 14:38:54 +01:00

Actually I've discussed with @HooglyBoogly before posting.
This isn't really a bug but it's not ideal. So I was asked to posted the file here to track this known issue until it can be improved in the future.

Actually I've discussed with @HooglyBoogly before posting. This isn't really a bug but it's not ideal. So I was asked to posted the file here to track this known issue until it can be improved in the future.

Hans Goudey commented

2021-12-22 19:18:53 +01:00

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

Hans Goudey self-assigned this 2021-12-22 19:18:53 +01:00

blender-admin commented

2021-12-23 01:15:21 +01:00

This issue was referenced by 8f89196be2

This issue was referenced by 8f89196be252cd541a0669c0aed02f4ad457e39d

Hans Goudey commented

2021-12-23 01:16:11 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2021-12-23 01:16:11 +01:00

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Inconsistent Behavior of Set Material Node #94232