back in the 90s, the era of 8/16bit home computers, it was rare treat to experience software that made your computer feel like a supercomputer
the (originally freeware) #opensource raytracing software POVRAY was definitely one of those
it was available for a number of platforms eg Amiga, PC and Acorn Archimedes
the scene description language was very powerful, able to programmatically define scenes with eg loops