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Maniphest T70303

join objects produces buggy results in materials
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Description

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30

Blender Version
Broken: version: 2.81 (sub 10), branch: master, commit date: 2019-09-10 22:12, hash: rB4ce3fbd52ae8
Worked: (optional)

Short description of error
STRG+J produces strange material result... in eevee & cycles...
after joining objects, the Textures are gone for the leaves and they got invisible

i tryed to make all obj single user first... didnt help
i tryed to apply location to all objects first... also didnt help

seem somethings wrong with strg+j and materials

Exact steps for others to reproduce the error
open blend and simply hit STRG+J
the leaves are now totaly invisible (in material-preview-mode)
then switch to rendered mode - cycles shows something... but thats faulty too... just a black something in the middle of the leaves

join_objects_bug.blend1 MBDownload

thanks for your hard work and have a nice day :)

Event Timeline

Tobias Lijsen (blenderhilfe) created this task.Sep 27 2019, 5:25 PM
Jacques Lucke (JacquesLucke) changed the task status from Unknown Status to Archived.Sep 27 2019, 5:39 PM
Jacques Lucke (JacquesLucke) claimed this task.
Jacques Lucke (JacquesLucke) added a subscriber: Jacques Lucke (JacquesLucke).

The issue is that the "zweig" material uses the "Orco" uv map after joining, because it is the active one. The solution is to be more specific about the used uv map in the material.