Incorrect workbench shadow from n-gons #58735
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Reference: blender/blender#58735
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System Information
Operating system: Windows 10
Graphics card: GTX 1080Ti
Blender Version
Broken: 2.80,
a205493426, 2018-12-03Short description of error
Workbench shadows are often incorrect on n-gons. I have yet to reproduce this in a simple start file, but I'm seeing it all the time in more complex scenes.
Exact steps for others to reproduce the error
door_10_modeling_test_shadow-error.blend
Video: http://recordit.co/mo0NCM8V0N
You can also see them on the objects Plane and Circle.002:
Added subscriber: @JonathanLampel-4
Added subscriber: @dfelinto
Confirmed, and simplified the file to a minimum:
ngon-shadow.blend
Note: If you flip the normals, the shadow changes (it is still a wrong shadow).
Added subscriber: @fclem
Assigning to @fclem although he is a bit skeptical of whether we can fix this since the shadow technique is not meant to work with those kind of (internally generated) triangles.
In fact I managed to reproduce this regardless of ngons:
2-tris.blend
This issue was referenced by
3dfbb72b29Changed status from 'Open' to: 'Resolved'