Re: [Algorithms] FPS Questions

[Stephen J B. <sj...@li...>]

On Wed, 2 Aug 2000, Leath Muller wrote:

> > So what do console games do about interlace artifacts?  Are they actually
> > running at half the vertical resolution of broadcast TV - or do they have
> > fancy antialiasing filters to deal with it?
> 
> It's just in the HW to pass the image out to your TV... as far as the
> console is concerned, it's just a set resolution, say 320x240. The image
> is split at the HW just before the video cable and after the internal
> rasterization etc HW... Same as the ol' Amiga, Atari ST, etc...
 
Ah - that explains it.  Since TV's have ~480 scanlines (NTSC) - or
640 (PAL), the console must be repeating each scanline twice at 320x240,
so there is no interlace issue and it can effectively pretend to be
a 60Hz non-interlaced display.

Steve Baker                      (817)619-2657 (Vox/Vox-Mail)
L3Com/Link Simulation & Training (817)619-2466 (Fax)
Work: sj...@li...           http://www.link.com
Home: sjb...@ai...       http://web2.airmail.net/sjbaker1