/usr/share/radiance/source/ is in radiance-materials 4R1+20120125-1.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/radiance/source/abolite/
/usr/share/radiance/source/abolite/HMFA.fixt
/usr/share/radiance/source/abolite/HMFA1400
/usr/share/radiance/source/abolite/HMFA1400.dat
/usr/share/radiance/source/headlamp/
/usr/share/radiance/source/headlamp/highbeam.dat
/usr/share/radiance/source/headlamp/highbeam.rad
/usr/share/radiance/source/headlamp/lowbeam.dat
/usr/share/radiance/source/headlamp/lowbeam.rad
/usr/share/radiance/source/headlamp/syl2a.dat
/usr/share/radiance/source/headlamp/syl2a.rad
/usr/share/radiance/source/hubbell/
/usr/share/radiance/source/hubbell/BO-100_none
/usr/share/radiance/source/hubbell/BO-100_none.dat
/usr/share/radiance/source/hubbell/BO-100_none.zlm
/usr/share/radiance/source/hubbell/LBM-150Sx-D-P
/usr/share/radiance/source/hubbell/LBM-150Sx-D-P.dat
/usr/share/radiance/source/spi/
/usr/share/radiance/source/spi/raw.dat
/usr/share/radiance/source/spi/std33
/usr/share/radiance/source/spi/std33.dat
/usr/share/radiance/source/wellmade/
/usr/share/radiance/source/wellmade/325-AL97-248RS
/usr/share/radiance/source/wellmade/325-AL97-248RS.dat
/usr/share/radiance/source/wellmade/395-12A-248RS
/usr/share/radiance/source/wellmade/395-12A-248RS.dat
/usr/share/radiance/source/zumtobel/
/usr/share/radiance/source/zumtobel/SID-C2.dat
/usr/share/radiance/source/zumtobel/SID-C2.rad
/usr/share/radiance/source/zumtobel/fixt.pts
/usr/share/radiance/source/zumtobel/louvre