Re: [Qemu-devel] [PATCH 6/6] kvm: qemu: fix vga screendump

[Anthony Liguori]

andrzej zaborowski wrote:
> 2008/7/20 Anthony Liguori <address@hidden>:
>   
> > andrzej zaborowski wrote:
> >     
> > > 2008/7/20 Anthony Liguori <address@hidden>:
> > >
> > >       
> > > > andrzej zaborowski wrote:
> > > >
> > > >         
> > > > > 2008/7/20 Anthony Liguori <address@hidden>:
> > > > >  With -no-graphic there's no ds->data, or it can have lower bpp than
> > > > > what's otherwise available.
> > > > >
> > > > >
> > > > >           
> > > > Screen dumping with -no-graphic probably should just show a black screen
> > > > anyway.
> > > >
> > > >         
> > > I thought this was the main use case. You shouldn't need sdl installed
> > > to perform the tests Avi talked about.
> > >
> > >       
> > You could still just do -vnc none to achieve the same effect.
> >     
>
> What I mean is it should be totally independent of that and of X on
> host, if you want to perform comparisons on the bitmaps (and for
> various other reasons).
>   

-vnc none gives a consistent depth of 32-bit.

FWIW, I have a different approach to doing what Avi describes that uses 
a VNC client.  The advantage of this is that you can have a lot more 
control over the pixel format to avoid this sort of problem in the first 
place.

Regards,

Anthony Liguori