LED mapping already has commercial solutions. They all put a person in the loop: click, trace, correct, repeat. It is slow, and it is easy to get wrong.
Splanc maps the fixture with computer vision instead, so you never have to walk the geometry by hand again. It then takes several steps further than a mapper. Effect authorship moves into an agentic harness: you can tell the lights, in language, how you want them to behave.
libopendrop is a real-time, music-reactive graphics system written in C++ and GLSL. It sits in the lineage of MilkDrop and ProjectM: procedural visuals authored under the logic of a live audio signal, closer to an instrument than to a renderer of finished pictures.
Presets can be written natively rather than inside a compatibility shader model, which makes it useful as a research platform for pushing how much image can be coaxed from a constrained, real-time pipeline — the same general problem as a low-resolution volumetric display, on a different substrate.
TouchDesigner is a superb place to author real-time visuals as node graphs — but running what you build there means shipping TouchDesigner itself, a licensed desktop runtime. That coupling keeps a whole class of work tethered to a workstation, out of reach of small, cheap, headless hardware.
td-deploy breaks the tether. It compiles a TouchDesigner project and deploys it to a Raspberry Pi that runs the piece natively and GPU-accelerated, with no TouchDesigner anywhere on the device. A desktop companion handles one-click SD-card setup and live redeployment each time you save, so the Pi behaves like a running extension of your patch. You author where it is pleasant; the piece runs where it is practical.