 Gino Acevedo supervised realistic skin tones, which for the first time used subsurface scattering shader, taking four hours per frame to render.Render time refers to the amount of time it took the computer to process the image into a usable format; it does not include the amount of time it took the texture artists to "draw" the frame.The hair dynamics of CG Gollum in "The Two Towers" were generated using Maya Cloth.