ten_meshinit

Writes the index topology of the crawler creature's single mesh, once: the body blob's lat-long grid, ten tentacle tube grids, and an octahedron per goo droplet. One thread per unit — a grid quad or a whole droplet. preseed/parts/p_tendril.module dispatches it when it builds the creature's buffers; preseed.parts.ten_scatter rewrites the vertices those triangles index, every frame.