GeoNodes: material shader ignored when generated primitive ist connect first in join geometry node #87758

Closed
opened 2021-04-23 16:48:09 +02:00 by Björn Eckhardt · 4 comments

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 465.89

Blender Version
Broken: version: 2.93.0 Beta, branch: master, commit date: 2021-04-21 20:15, hash: 0f66dbea90
Worked: (newest version of Blender that worked as expected)

Short description of error
When a generated mesh primitive is connected above the original geometry (train) in the join geometry node multi input their is no material shading for any mesh in the object. Is the original geometry connected first to the join, both meshes get shaded. Probably it is more a design thing than a bug, but I wanted to report anyway, because it took me 2 hours to figure out the reason for getting no shading. Probably because of material id setting or something for the generated mesh, but i also couldn't figure that out. At least its confusing as default behaviour :-)
BTW. using geo nodes attributes in cycles so much more often don't give any information (despite type, ranges), than they do that I'm not sure where to start a bug report. Are there restrictions I'm not aware of or do I handle the data wrongly?

Exact steps for others to reproduce the error

  • add material to start cube
  • add geometry node
  • in node tree add join geometry node to only noodle
  • add mesh primitive (line, cylinder,...) and connect to join node

when primitive is connected above the first noodle the shading disappears.

Screenshot and test file:
https://www.dropbox.com/sh/41whyjof3hg3wmd/AAA1bPsX4JzqdgHR_MhaIsopa?dl=0

it's awesome anyway. Thanks for looking into it. Enjoy.

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 465.89 **Blender Version** Broken: version: 2.93.0 Beta, branch: master, commit date: 2021-04-21 20:15, hash: `0f66dbea90` Worked: (newest version of Blender that worked as expected) **Short description of error** When a generated mesh primitive is connected above the original geometry (train) in the join geometry node multi input their is no material shading for any mesh in the object. Is the original geometry connected first to the join, both meshes get shaded. Probably it is more a design thing than a bug, but I wanted to report anyway, because it took me 2 hours to figure out the reason for getting no shading. Probably because of material id setting or something for the generated mesh, but i also couldn't figure that out. At least its confusing as default behaviour :-) BTW. using geo nodes attributes in cycles so much more often don't give any information (despite type, ranges), than they do that I'm not sure where to start a bug report. Are there restrictions I'm not aware of or do I handle the data wrongly? **Exact steps for others to reproduce the error** - add material to start cube - add geometry node - in node tree add join geometry node to only noodle - add mesh primitive (line, cylinder,...) and connect to join node when primitive is connected above the first noodle the shading disappears. Screenshot and test file: https://www.dropbox.com/sh/41whyjof3hg3wmd/AAA1bPsX4JzqdgHR_MhaIsopa?dl=0 it's awesome anyway. Thanks for looking into it. Enjoy.

Added subscriber: @BjornEckhardt

Added subscriber: @BjornEckhardt

Added subscriber: @Baardaap

Added subscriber: @Baardaap

I think this is a duplicate of #87746

edit: It seems to be a diferent issue, because adding the original gemoetry above the generated geometry doesn't restore the texture in my case. Still I think it's probably related.

I think this is a duplicate of #87746 edit: It seems to be a diferent issue, because adding the original gemoetry above the generated geometry doesn't restore the texture in my case. Still I think it's probably related.
Member

Closed as duplicate of #87241

Closed as duplicate of #87241
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Reference: blender/blender#87758
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