''Blade: Trinity" is a schlock comedy about vampires and the physically fit people who hunt and kill them. Things blow up, the blood runs faster than Marion Jones, and the acting is very much beside the point. In one scene, a hunter played by the jokey Ryan Reynolds winds up shirtless, tortured, and sharing an unprintably funny exchange with Parker Posey, of all people, who has a good time playing the movie's vampire villainess. (For the record, Wesley Snipes is the star.)
David S. Goyer, the man who wrote and directed every sarcastic, action-packed drop of this, the third ''Blade" installment, would like to take a break from techno scores, darkly lit sets, and explosions to concentrate on something more . . . fulfilling.