Found another little 26bit RISC OS program with source to attempt a recompile. A little ray-tracer ported from Amiga...
First of all, the BBCBASIC program that converts the ray-tracer's output to acorn Sprite format has 26bit assembly routines and is just borked.
Second, the included source is only the original(?) msdos source, not the source for the full RISC OS app!
Who does that! That's just messed up!
meh I probably won't do anything with it. Afaict the cli renderer works, but without re-writing the IMadeMyOwnGraphicsFormatBecausePCXwasTooHardForMe to sprite converter I can't really tell.
I'm not into ray tracing myself. I think the RISC OS port of povray still works, for the RISC OS people who are.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko