NEW YORK — The legacy of Italian art glass, which arose from centuries-old Venetian glassblowing techniques, continues with contemporary glass masters who take ancient traditions and meld them with innovative, modern approaches. Among a new generation of artisans following in the steps of Paolo Venini, Archimede Seguso, Carlo Scarpa and Lino Tagliapietra is Dante Marioni (American, b. 1964-).