pinion Uses glSelectBuffer and gluPickMatrix for mouse-clicks.
pipes Uses glMap2f for the Utah Teapot.
polyhedra Uses GLUtesselator (concave objects); also Utah Teapot.
skytentacles Uses GL_LINE in -cel mode.
timetunnel Uses GL_CONSTANT_ALPHA and all kinds of other stuff.
pinion Uses glSelectBuffer and gluPickMatrix for mouse-clicks.
pipes Uses glMap2f for the Utah Teapot.
polyhedra Uses GLUtesselator (concave objects); also Utah Teapot.
skytentacles Uses GL_LINE in -cel mode.
timetunnel Uses GL_CONSTANT_ALPHA and all kinds of other stuff.