Jim Blinn's Corner-a trip down the graphics pipeline: subpixelic particles

摘要

Reasons for subdividing pixels into subpixelic particles are discussed. Working with subpixel resolution in the floating-point domain is suggested as the easiest approach. To illustrate the use of floating-point pixel space, the arithmetic of two rendering algorithms is reviewed. The algorithms are an antialiased line renderer and a simple polygon tiler. Another use for subpixel resolution, i.e., doing antialiasing by subsampling is also considered. Using integer arithmetic in addition to subsampling is briefly discussed.