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

[Jamie Lokier <jamie@shareable.org>]

Julian Pidancet wrote:
> So after all, why not implementing our own VT switching and using
> directly the fbdev interface.

It's a good idea.  VT switching isn't hard to track reliably.

Being able to tell qemu, through the monitor, to attach/detach from a
particular VT might be a nice easy bonus too.

> I just checked the linux fbdev code to
> find out if it provides with a blitting method that could perform
> the pixel color conversion automatically for Qemu.
> 
> Unfortunately, from what I have read from the
> drivers/video/cfbimgblt.c file in the linux tree, there's no such
> thing, and it also means that we cannot take advantage of any kind
> of hardware pixel format conversion.

I'm not sure if DirectFB provides that particular operation, but I
have the impression it's the sort of thing DirectFB is intended for: A
framebuffer, plus a variety of 2d acceleration methods (and other
things like multi-buffering, video and alpha channel overlay).

-- Jamie