Posted By
MMS
on 2023-11-25
02:32:45
 |  Re: Subpixel "rendering" CRT
Yepp, we produced monitors for HP and subpixel is a real thing  I knew because even subpixel defect was not allowed for us.
My 2c:
So it depends on the mask of the CRT TV if the scroll looks smoother or just no difference.
So the point is when you know how the pixel built up in case of a specific slot mask, shadow mask or aperture grill, and you continuoulsy change the contour color according to that color sequence it can look smoother on THAT specific aperture grill. The best is Trinitron, it is very sharp and very even black space between the color lines. So if you follow the Red, Green, Blue (and only the pure RGB colors) at the edges, then I think you may not duplicate, but triple the vertical scroll resolution to 960 
But as Plus/4 do not have real RGB colors (not evena pure white) this is just theoretic. Also you can make it even smoother by doing transient color from red to green in a way the green content become stronger, while the red fades away.
http://filthypants.blogspot.com/2020/02/crt-shader-masks.html
https://www.retrorgb.com/retrotink5x-new-scanline-features.html
BTW that's why it cannot work on most LCD TVs:
https://imgur.com/a/UZ8wjum#86selvy
Sorry for the big pictures. was too lazy to convert them, maybe today evening :-)
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