Originally Posted by byuu
Yeah, because it's aliasing with the popup window. Perhaps there's a better algorithm for the blending than what I used. The entire screen is actually rendered at 512-width, that's not a 50/50 split like the textboxes in Secret of Mana 2. It's just that most of the pixels outside of that window are the same on even and odd columns.

The same aliasing may occur on a TV, I'd have to look and see.

EDIT: AWJ, here's Secret of Mana 2. Note the flowers at the bottom. http://img11.imageshack.us/img11/374/sd3e.png

Wow, the lowpass filter makes SD3's background look much nicer! Especially the grass. The font is also a lot less blurry than I expected.

I don't think it's possible to fix the aliasing (as you call it) in JP without making all the games that use hires "normally" look worse. JP is pretty much the only game that abuses hires for faux-alpha-blending (rather than to get more detail for fonts, etc.), isn't it? I wonder why they didn't just use color math...