locustBody

The surface of a locust: a near-black brown abdomen and a paler, thinner wing, told apart by uv.x, both dark enough that a cloud of them reads as a solid mass against a bright sky. uv.y carries each insect's own iridescence phase, so the angle-dependent sheen crawls through the swarm instead of flashing in unison, and a grazing sun catches the wing membranes as they tilt through a beat. Written as surface(), so the engine lights it and the PBR debug passes report the real channels.