Fix single material sphere geometry. Previously materialID was ignored
Fix single material sphere geometry. Previously materialID was ignored

ospray/OSPRay,ospray/OSPRay,MengjiaoH/ospray,MengjiaoH/ospray,ospray/OSPRay,MengjiaoH/ospray,wilsonCernWq/ospray,wilsonCernWq/ospray,wilsonCernWq/ospray,MengjiaoH/ospray,MengjiaoH/ospray,ospray/OSPRay