On Thu, 1 Oct 2015 12:27:21 -0700 Bill Spitzak <spit...@gmail.com> wrote:
> On Thu, Oct 1, 2015 at 12:50 AM, Pekka Paalanen <ppaala...@gmail.com> wrote: > > > The black blanket surface behind the window OTOH allows for direct > > scanout. If black bars are not visible and the client buffer is > > completely opaque, it is possible to scan it out without composition by > > rendering. > > > > There should be some way to detect if the buffer is opaque, in which case > these optimizations could be done. There is, the hint is given by the client: wl_surface.set_opaque_region. This one we already do in Weston. Thanks, pq
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