From this tutorial you could learn how to turn any point cloud or geometry into voxel graphics inside TouchDesigner using simple trick. No GLSL, no coding, just a good old nodes. First 15 minutes show the setup and trick itself and the rest of the video is showing different applications of it.
Scatter plugin I mentioned in a video.
If you find this tutorial helpful, you could support me on Patreon
All the best,
Stas.