GLSL, OpenGL's standard language for programs ran on the GPU, includes what closely resembles C's preprocessor. So how'd we reimplement this for our risc32cfimv?

Incidentally GLSL specifically excludes #include, so (using the hardware I introduced the other day) we could run on this on a ROM-bank without filesystem routines. But #include sounds handy so I'm tempted to suggest that I'd implement it anyways!

In which case I'd love #line to be handled later, & even synthesize new ones.

1/?