Anti-aliasing is the technique of removing or reducing the visual impact of aliasing artifacts that are present whenever high-resolution or continuous information is presented at a lower resolution. In real-time graphics, aliasing often reveals itself in the jagged appearance of polygon edges, or the visual distortion of textures that have a high degree of variation.
The following images show an example of aliasing artifacts at the edge of an object. On the left, we can see that the edge appears jagged. This occurs because each pixel is determined to lie either completely inside the polygon or completely outside it. If the pixel is determined to be inside, it is shaded, otherwise it is not. Of course, this ...
