racefeat.2da
This file lists which races (from RACE.IDS) have Infravision as an innate passive ability. Note that it does not set STATE_INFRAVISION.
In PSTEE we have:
2DA V1.0 0 VALUE ELF 1 DWARF 1 GNOME 1 HALF_ELF 1 HALFORC 1
2DA V1.0 0 VALUE ELF 1 DWARF 1 GNOME 1 HALF_ELF 1 HALFORC 1