On Tuesday, 19 June 2018 20:40:12 MSK Russell King - ARM Linux wrote: > On Tue, May 29, 2018 at 10:11:03AM +0300, Ville Syrjälä wrote: > > On Tue, May 29, 2018 at 02:48:22AM +0300, Dmitry Osipenko wrote: > > > Though maybe "color components replacement" and "replacement with a > > > complete transparency" could be factored out into a specific color > > > keying modes.> > > Yes. I've never seen those in any hardware. In fact I'm wondering where > > is the userspace for all these complex modes? Ie. should we even bother > > with them at this time? > > Such hardware does exist - here's what Armada 510 supports (and is > supported via armada-drm): It shouldn't be a problem to extend the list of common color keying modes with a mode that is supported only by a particular HW. The only requirement for adding a new mode is that this mode must be utilized by opensource userspace software.