Backface colors flipped when using different and custom backface shading
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Description
Hi!
I am using polyscope in python on my intel Mac. When I read this mesh and choose the "backface shading -> custom" option, all faces assume the "inverted" color, despite this mesh being definitely not inverted. Here's a MWE:
import igl
import polyscope as ps
V, _, N, F, _, _ = igl.read_obj("test/unit_tests_data/bunny_oded.obj")
ps.init()
ps.register_surface_mesh("bunny", V,F)
ps.show()
Here is what I see:
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Research direction
Start by running the Python MWE with the supplied bunny_oded.obj mesh and selecting backface shading → custom. Trace the backface-shading path responsible for choosing the front and inverted colors, then verify that the mesh displays the correct custom backface colors without treating all faces as inverted.
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Assessment
- Tech stack
- python
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100