@polychrome not really antialiasing tbh and it only works in one dimension. The easiest way to reproduce CRT effect:
(swap horizontal and vertical for tate mode games)
resize vertically 2x or 3x with nearest-neighbor filter, then to desired height with linear/cubic/whatever
resize horizontally with linear filter/cubic/whatever to match crt aspect ratio
(swap horizontal and vertical for tate mode games)
resize vertically 2x or 3x with nearest-neighbor filter, then to desired height with linear/cubic/whatever
resize horizontally with linear filter/cubic/whatever to match crt aspect ratio