McMurtry's work include the prize-winning novel "Lonesome Dove," as well as films like "Terms Of Endearment," "Brokeback Mountain" and "The Last Picture Show."
The actor said his late co-star "refused" to participate in an opening monologue that poked fun at the film's gay love story.
The “Spider-Man: Far From Home” actor said his "Brokeback" co-star, who died in 2008, "would never joke" about the gay romance at the heart of their film.
Gus Van Sant, initially approached to direct the film, said a long list of A-listers turned down roles in the movie.
Ryan Beene’s "In The Dark" features a gay college athlete falling in love for the first time.
The Spanish director said his version would've had "more sex."