[Scummvm-devel] Features and graphics modes

[Marcus Comstedt]

<Torbjorn.E.Andersson at tietoenator.com> writes:

> The reason for aspect ratio correction is probably best described at
> http://www.aarongiles.com/scumm/index.html though of course Aaron is
> describing his own updated SCUMM engine, not ScummVM. Basically, it's
> a trick to allow the games to cover the entire screen, even if they're
> running at a resolution that the screen/graphics card doesn't support.
>
> (I also find it useful in windowed mode, but I assume that's not a
> concern on a Dreamcast.)
>
> The SDL backend hardwires this to mean that if the original image is
> 200 pixels tall it can be stretched to 240 pixels.
>
> So if the Dreamcast already uses the entire screen - I wouldn't know
> about that since I've never even seen a Dreamcast - then you won't have
> to worry about aspect ratio correction. At least, I don't think there
> will be much requests for running the games in "letterbox" mode. :-)


The Dreamcast always runs in fullscreen (obviously), and 320×200 games
get letterboxed.  Would it be more correct to stretch them?  AFAICR,
the original games were letterboxed on PAL Amigas.


  // Marcus