Rendering perspective views of a scene using a scanline-coherent look-up table

摘要

A method and apparatus for rendering perspective views of a 3D scene. The method of the present invention includes the steps of providing an environment map containing pixel values representing a scene (105), generating a scanline-coherent iook-up table containing environment map indices ordered in scanlines (110); mapping scanlines of a viewing plane to a portion of the look-up table scanlines based upon a pitch angle of the perspective view to be rendered (115); locating pixel values in a portion of the environment map based on a yaw angle and the indices stored in the portion of the took-up table scanlines to which viewing planes are mapped (120); and writing (125) and rendering (130) the located pixel values into the viewing plane and display.