On Thu, Nov 1, 2012 at 3:09 PM, Ville Syrj?l? <ville.syrjala at linux.intel.com> wrote: >> Userspace doesn't use this today at all even in the panning case? > > If it does, then the user is going to be upset when nothing happens. > Only the x/y offsets are effective with the current code. > >> I >> know it worked at one point at least, but that may have been back in >> the UMS days... > > Before my time. Afaik the fb->offsets have been added to support planar formats with all planes smashed into the same buffer object (where the fourcc alone doesn't specify anything about inter-plane offsets). We don't support planar buffers, so enforcing an offset of 0 is imo totally ok. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch