Re: [Qemu-devel] [PATCH] Add QEMU DirectFB display driver

[Anthony Liguori]

On 05/17/2010 03:20 PM, Gerd Hoffmann wrote:
> On 05/16/10 03:10, Paul Brook wrote:
> > > The other solution would be to use the DirectFB driver for SDL which
> > > would allow to do slightly the same as this patch. But that would mean
> > > having to deal with an additional layer in the graphical stack, 
> > > which is
> > > not exactly what one wants from a performance or a complexity point of
> > > view.
> >
> > I don't buy your complexity argument.  Doesn't DirectFB-via-SDL 
> > already work?
>
> Run a guest.  Switch to another (host) virtual terminal.  Watch qemu 
> continue drawing on the framebuffer.  Doesn't count as "working" in my 
> book.

A common theme with SDL seems to be that it does lots of things poorly.  
I wonder if we'd be better suited just dropping SDL and focusing on 
doing a few things well.

The fact that we have cocoa support in the tree is basically an 
admission of failure with SDL.

Regards,

Anthony Liguori

> > If not why not? I'm pretty sure fixing that would be way simpler than 
> > adding a
> > whole new output backend.
>
> Didn't investigate where the bug is and how hard it would be to fix it.
>
> cheers,
>   Gerd