sim_floor

Obsidian mirror floor shader for the SIMULATION part (p4_simulation). Carries an analytic blurred reflection of the particle swarm — the part drives swarm_pos (xyz + radius) and swarm_color (rgb + intensity) per frame from the morph-phase table, and the fragment reflects the view ray about +Y toward the mirrored centroid so the glow tracks the camera like a true planar reflection. Hairline calibration rings pulse with pulse; micro-glints twinkle in the black glass.