SphericalHarmonics
Parameters
bands
Number of SH bands (1, 2, or 3 — determines coefficient count: 1, 4, or 9).
coefficients
Packed RGB SH coefficients; length must be bands² × 3.
Number of SH bands (1, 2, or 3 — determines coefficient count: 1, 4, or 9).
Packed RGB SH coefficients; length must be bands² × 3.