Re: [Linux-fbdev-devel] console and overlay/underaly (was: Re: more penguins (fwd)

[<dol...@cl...>]

> > Apparently there's some interest in marginaly useful feature like
> > displaying penguin. I was wondering if there could be an interest in
> > even less useful feature like overlay support. Like a full-color, full
> > screen penguin under your text console.
> 
> Something like this can also be done for vgacon. I haven't added that yet.

vgacon can do overlay ???

The advantage of the hardware overlay is that there's zero system
overhead ; only the actual drawing function _might_ be slower depending
on the hardware. And you only eat up FB memory.

> This would be really nice. We had this discussion some time ago but
> nothing was resolved. Basically we have to develope a way to define what
> composes the framebuffer in a generic way. Something like fb_bitfields
> plus a flag to say what it is. This would break things tho. I guess it
> will be for the fb filesystem for 2.5.X.

Maybe we should involve the author of fbtv, he could tell us the kind of
stuff that would be needed for efficient hardware YUV->RGB and/or
zooming in fbtv. I guess other app would have similar requirements.

-- 
Romain DOLBEAU               | For a hill, men would kill,
ENS Cachan / Ker Lann        |   Why ? They do not know.
Thesard IRISA / CAPS         |      -- Metallica
dol...@cl...    |       in 'For Whom The Bell Tolls'