Active UV Set Behavior #80645

New Issue

Conrad Dueck · 2020-09-09T18:48:52+02:00

Conrad Dueck commented

2020-09-09 18:48:52 +02:00

{F8859570}System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Quadro P2200/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.74

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-09 10:38, hash: 4ccd5bf5c6
Worked: (newest version of Blender that worked as expected)

Short description of error
When working with materials that leverage UV sets by name and are shared between multiple objects that contain more than one UV set, a named reference to a UV set that does not exist on the object, the texture node should fall back to the active UV set, based on the documentation, instead of falling back to 0,0 (? or what ever is happening currently when the named set is missing)

Exact steps for others to reproduce the error

open the attached Blender scene file
ensure the 3d view is set to Rendered shading mode (Cycles or Eevee should not matter)
select the plane object named "Plane"
change the UVs in it's material to use the "UVMap.001" set (instead "UVMap")

This should demonstrate that, indeed, the UVs seem to simply be missing rather than falling back to the active UV set in the object's UV data.

{F8858539}

{[F8859570](https://archive.blender.org/developer/F8859570/bug.multi_uvs.0001.blend)}**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: Quadro [P2200](https://archive.blender.org/developer/P2200.txt)/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.74 **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-09 10:38, hash: `4ccd5bf5c6` Worked: (newest version of Blender that worked as expected) **Short description of error** When working with materials that leverage UV sets by name and are shared between multiple objects that contain more than one UV set, a named reference to a UV set that does not exist on the object, the texture node should fall back to the active UV set, based on the documentation, instead of falling back to 0,0 (? or what ever is happening currently when the named set is missing) **Exact steps for others to reproduce the error** - open the attached Blender scene file - ensure the 3d view is set to Rendered shading mode (Cycles or Eevee should not matter) - select the plane object named "Plane" - change the UVs in it's material to use the "UVMap.001" set (instead "UVMap") This should demonstrate that, indeed, the UVs seem to simply be missing rather than falling back to the active UV set in the object's UV data. ``` {F8858539}

Conrad Dueck commented

2020-09-09 18:48:52 +02:00

Added subscriber: @ConradDueck

Richard Antalik commented

2020-09-15 13:32:39 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-09-15 13:32:39 +02:00

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

Richard Antalik commented

2020-09-15 13:32:39 +02:00

Can you link to documentation page that UV Map node should fall back on active UV map?

Conrad Dueck commented

2020-09-15 14:23:42 +02:00

Thanks Richard

https://docs.blender.org/manual/en/latest/modeling/meshes/uv/uv_texture_spaces.html#

The statement is "Click the camera icon to enable that UV texture for rendering. If no other map is explicitly specified."

Thanks Richard https://docs.blender.org/manual/en/latest/modeling/meshes/uv/uv_texture_spaces.html# The statement is "Click the camera icon to enable that UV texture for rendering. If no other map is explicitly specified."

Richard Antalik commented

2020-09-15 17:30:35 +02:00

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

Richard Antalik closed this issue

2020-09-15 17:30:35 +02:00

Richard Antalik self-assigned this 2020-09-15 17:30:35 +02:00

Richard Antalik commented

2020-09-15 17:30:35 +02:00

Linked documentation is not wrong.

Click the camera icon to enable that UV texture for rendering. If no other map is explicitly specified

This applies to Texture Coordinate node for example, see https://docs.blender.org/manual/en/dev/render/shader_nodes/input/texture_coordinate.html#outputs

In UV Map node, map is explicitly specified.

Linked documentation is not wrong. > Click the camera icon to enable that UV texture for rendering. If no other map is explicitly specified This applies to Texture Coordinate node for example, see https://docs.blender.org/manual/en/dev/render/shader_nodes/input/texture_coordinate.html#outputs In UV Map node, map is explicitly specified.

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Active UV Set Behavior #80645