The VSLIGHTINGQUALITY variable stores the light quality mode in the visual style for the current viewport. The value can be:
Value
Description
0
Faceted – uses a single color for each face.
1
Smooth – computes colors of faces as a gradient between the vertices.
2
Smoothest – computes colors of faces for individual pixels using the per-pixel lighting setting.
Note: An existing visual style is not changed when the system variable gets a new value. Temporary visual style will be created as a clone of visual style assigned for current viewport.