After this the animators would compile the scenes, and develop a new storyboard with the computer animated characters. Animators then added shading, lighting, visual effects, and finally used 300 computer processors to render the film to its final design.[44][45] The shading team, under Tom Porter, used RenderMan's shader language to create shader programs for each of a model's surfaces. A few surfaces in Toy Story came from real objects: a shader for the curtain fabric in Andy's room used a scan of actual cloth.[48] After animation and shading, the final lighting of the shot was orchestrated by the lighting team, under Galyn Susman and Sharon Calahan. The completed shot then went into rendering on a "render farm" of 117 Sun Microsystems computers that ran 24 hours a day.[32] Finished animation emerged in a steady drip of around three minutes a week.[49] Each frame took from 45 minutes up to 30 hours to render, depending on its complexity. In total, the film required 800,000 machine hours and 114,240 frames of animation.[33][44][50] There is over 77 minutes of animation spread across 1,561 shots.[46] A camera team, aided by David DiFrancesco, recorded the frames onto film stock. Toy Story was rendered at a mere 1,536 by 922 pixels, with each pixel corresponding to roughly a quarter inch of screen area on a typical cinema screen.[32] During post-production, the film was sent to Skywalker Sound where sound effects were mixed with the music score.[45]