How well-read and cinema-literate are our filmmakers?

The first names that come to my mind are Anurag Kashyap, Sriram Raghavan, Vasan Bala and Dibakar Banerjee. They are voracious book-lovers as well as dedicated film fan-boys. The OG pan-Indian star Kamal Haasan is another one and I don't think I need to say anything about Satyajit Ray. All of this reflects in their work as well, wherein they bring very unique geeky sensibilities. What about the the rest of the industry?