[cairo] cairo_window proposal

[Bill Spitzak]

Chris Wilson wrote:

> writing demos. For that I have a very simple event loop with pluggable
> backends that expose a cairo_surface_t + swapbuffer and supports drm, gl,
> xcb, xlib, shared pixmaps (i.e. image onto xlib).

That is only using the cairo image backend, right? You then copy the 
image to the final result? I would like to use the actual hardware 
accelerated backend.