Very old - 1980s - picture programming language

Hey,

I once knew of a programming language, which was designed to create images/pictures. You would script the picture in a text file. Then you would compile it. Compiling it would sometimes take days if the picture was complex enough (machines were slow back then).

The result of the compiling was your image/picture.

I can't seem to find the name of the language online. Any ideas?

Thanks,
Jason