Trouble accessing vertex colors 2022.1_27.1 (3.4.1)

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rray
Licensed Customer
Posts: 37
Joined: Sat May 06, 2017 8:43 pm

Hi

Looking forward to using the newest release soon. Right now I can't access the vertex colors on a mesh using the octane attribute nodes (Col, Col.001).
Wiring it directly using the octane Node view doesn't work either. Using Cycles, it works, the vertex colors show.

in the previous 2022.1_27.5_beta (3.3) it worked too.
Thanks for any hints!
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linograndiotoy
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Joined: Thu Feb 01, 2018 7:10 pm

That's been fixed in the upcoming version.
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rray
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Joined: Sat May 06, 2017 8:43 pm

Thank you for letting me know!
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linograndiotoy
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Sure!
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rray
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Joined: Sat May 06, 2017 8:43 pm

I tried rendering vertex colors in the latest version (Blender_Octane_Edition_2022.1_27.15_stable.exe)

Is it fixed already, maybe I did something wrong? Here's what I did:

Image

Using cycles, the colors are coming through:

Image
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opstyix
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Joined: Tue Jul 30, 2019 6:47 am

Try to convert the domain from Face Corner to Vertex, you can do that from the drop-down arrow in the Color Attributes tab.
Last edited by opstyix on Fri May 12, 2023 12:10 am, edited 1 time in total.
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rray
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Joined: Sat May 06, 2017 8:43 pm

Thanks opstyix, that did help! It never occured to me that it might be because of that.

Now I just have to find out how to do that using python.

Maybe face corner color attributes will be supported again some day.
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rray
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Joined: Sat May 06, 2017 8:43 pm

in case someone needs it here's the code used to convert the vertex color storage type:

Code: Select all

     
for o in bpy.context.scene.objects:     
  bpy.context.view_layer.objects.active = o
  try:
    o.data.vertex_colors.active = o.data.vertex_colors["Col"]
    bpy.ops.geometry.color_attribute_convert(domain='POINT', data_type='BYTE_COLOR')
    o.data.vertex_colors.active = o.data.vertex_colors["Col.001"]
    bpy.ops.geometry.color_attribute_convert(domain='POINT', data_type='BYTE_COLOR')
  except:
    print(f"trouble converting vertex colors for {o.name}")
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