[Lerc]

I once toyed with Temporal dithering on VGA ModeX.

While the bullet point listed resolution for standard VGA was 320x200. Hitting the hardware registers and paying the price of a rather peculiar addressing mechanism for pixels you could get a lot more(and double buffering to boot).

320x240 was the most common tweaked mode, because it gave you square pixels and page flipping.

At the edge of what momitors could handle there was a 400x300 mode which ran at 87Hz Flipping two images with this mechanism give you a 43Hz shimmer, which is amost impossible to pick on colours if the two components are similar luminance.

I never saw this get used for anything, but it would have made an excellent paint program for standert VGA.

[corysama]

I vaguely recall seeing a DOS demoscene demo that filled the 320x200 screen with a letterboxed 256x200 gradient. Then it slammed the actual display frame data into the VGA 256 color pallete one line at a time on each horizontal sync. The result was an effective 18-bit color resolution image from a 256-color device. (I think MCGA didn't actually have 24-bit palletes)

Of course, it meant you had to spend 90% of the frame updating the pallete registers and only had the vertical blank time to draw everything into the frame buffer. But, the focus of the demo was the idea that high-color was at all possible on VGA hardware.

[inoop]

X14 by Orange?

https://www.youtube.com/watch?v=LRPhB1KkxMc

[nikanj]

I'm pretty sure I've seen this used in the demo scene, but I can't name any productions after all these years. I remember Second Reality has a mode x plasma at least

[Jare]

I recall Ambience by Tran as one of the first (and few) tasteful interlaced productions: https://www.youtube.com/watch?v=xJshv8BjdoM VESA-compatible hicolor and truecolor were about to become commonplace.

[sedatk]

i think one of the assembly party reports (94?) used it to show true color photos on vga.