[Bug 779146] dmabuf: be able to negotiate tiled surfaces

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=779146

--- Comment #35 from Scott D Phillips <scott.d.phillips at intel.com> ---
(In reply to Julien Isorce from comment #34)
> Hi Scott, any update on this ? Also do you have a patch to actually use this
> meta in gstreamer-vaapi ? and GstGL ?

Per daniels's comment about libva as-is being insufficient, I've made some
patches to libva and intel-vaapi-driver:

https://github.com/scott-d-phillips/libva/commit/52e006fe0126d8535d88d045872307d8e332386f#diff-ce40de7930eb5bb0c9f5801e5101ce29

https://github.com/scott-d-phillips/intel-vaapi-driver/commit/5aebbb3043cda3626f62698f03d112a987eccc64

I haven't yet proposed these on the libva mailing list, I'm waiting for the
patches which add support for the modifiers to land in i915 and mesa. My plan
is to pick this back up when those patches are merged so we can have an
end-to-end working usecase and we know the modifier negotiation is good.

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