en.m.wikipedia.org/wiki/Cg_(pro … g_language
Perhaps switching to GLSL (with an HLSL translator) or a custom shader language would be for the best?
Panda3d has pretty good GLSL support, it’s just the auto-shader that’s stuck in Cg.
I could volunteer to write a python shader generator for GLSL, when (if) I manage to finish the gpu particles I’m currently stuck at, but don’t count on PBR and all that modern stuff Tobias has conjured up.