The first installment in Hiroshi Inagaki’s epic and magisterial Samurai Trilogy, Samurai I: Musashi Miyamoto, which will be screened this Sunday at the McNay Art Museum, follows a young bandit and his spiritual evolution into a kind of enlightened samurai. Released the same year as Kurosawa’s classic Seven Samurai (1954), Samurai I is less visceral and gripping, but more impressionistic.