With X., writer/director Ti West returns to his horror roots and seeks to bring a modern bend to the gritty, DIY filmmaking of the 1970s. Conjuring up an aesthetic that’s a part Debbie Does Dallas, part Texas Chain Saw Massacre, X captures that oldschool feel but doesn’t come backing much heat. It’s not altogether joyless, but for a film that lays emphasis on the hardcore, let’s just say the film has trouble getting it up.