1. For a content editing application, a method of rendering an image for a graphics presentation, said method comprising: receiving input for a set of editing operations that modifies at least one of a size, shape, and position of an image in a user-definable scene of the graphics presentation, said image defined in an image coordinate system; defining a sequence of operations to be performed on the image based on the set of editing operations, said sequence comprising at least two perspective transform operations; embedding at least the two perspective transform operations within a pixel transform matrix that relates the image coordinate system of the image to a pixel coordinate system; and using the pixel transform matrix to produce pixel data from the image that is defined in the image coordinate system in order to render the scene of the graphics presentation.