> most computer-generated images are rendered as an average of point samples weighted according to estimated coverage of a square pixel This may be true in ter

> most computer-generated images are rendered as an average of point samples weighted according to estimated coverage of a square pixel This may be true in terms of the sheer amount of GPU rasterized imagery. I wrote the pixel filtering code currently used in one of the major production-quality film renderers. I can tell you that it uses the classical approach of treating pixels as point samples. Notionally, it convolves irregularly placed camera samples with a reconstruction filter to create a continuous function which is then point sampled uniformly along the half-integer grid to produce the rendered image. Regarding the squarish pixels on the shown screen, I like to view them as just an analog convolution of those discrete samples so that the photoreceptors in our eyes can resample them.