L1 SH RGB representation of irradiance.
| Name | Description |
|---|---|
| Geo::u64 B | Each colour channel has 4x 16-bit floating point SH coefficients. |
| Geo::u64 G | Each colour channel has 4x 16-bit floating point SH coefficients. |
| Geo::u64 R | Each colour channel has 4x 16-bit floating point SH coefficients. |