🚀 go-pugleaf

In article <920810365.12598.0.nnrp-04.c2de56b7@news.demon.co.uk>,
Russ Williams <russ@algorithm.demon.co.uk> wrote:
>The half-frames part is very significant: it halves the vertical
>resolution.

And any Amiga user can tell you that you just render into the full
screen at 25 (or 30) FPS and let the video subsystem generate interlaced
output.

In other words the halved resolution doesn't impact programming.

The main reason for using a non-interlaced mode (or scan-doubling) is to
avoid flicker when you have aliasing. If the rendering is properly
antialiased this isn't an issue (alternate frames don't present the
same information in this mode, mind, you really do get better resolution
than with scan-doubled screens).

The second issue is that on a normal TV screen the luminance resolution
is significnatly below the full 768 pixels per scan line, so you get
color artifacts if you try and render anything finer than about 300-400
pixels per line.

We're already seeing higher resolution TVs in the store, which means the
PSX2 will likely be able to make effective use of 640x480 up to 768x512
(I was able to coax almost this many displayed pixels out of my Amiga 3000
on a Commodore 1942 analog RGB monitor).

-- 
In hoc signo hack, Peter da Silva <peter@baileynm.com>
 `-_-'   "Heb jij vandaag je wolf al geaaid?"
  'U`
         "Tell init(8) to lock-n-load, we're goin' zombie slaying!"