Re: [Qemu-devel] [PATCH] opengl rendering in the sdl window

[Gerd Hoffmann <kraxel@redhat.com>]

Daniel P. Berrange wrote:
> The rotating-cube issue is a one annoyance - the bigger problem is that
> it'll render over the top of other windows, even when it doesn't have
> input focus, and when you move the window, the area where it used to be
> doesn't get refreshed. This makes overlapping window management pretty 
> unusable :-(

Oh, that reminds my of the horrible mess we had in the early tv card
days, when DMA'img the TV image directly to the visible frame buffer,
behind the X-Servers back.  Then try to track window clipping changes,
update the DMA instructions for the TV card (*after* the X-Server
changed the window stacking), then use dirty tricks to force the
X-Server refreshing the screen to remove tv image artefacts from the
window just raised.  Certainly nothing we should try again ...

Beside that I still think it would be a good idea to separate qemu and
the gui into two separate processes, so you can close the GUI window and
keep the VM running.  It also solves the dependency issue for distros as
the gtk frontend with all the dependencies can just go into a separate
sub-package.

cheers,
  Gerd