Stabilizing wl_scaler protocol extension

[Steven Newbury]

On Tue, 2014-09-16 at 14:51 +0300, Pekka Paalanen wrote:
> On Tue, 16 Sep 2014 13:26:12 +0200
> Alexander Preisinger preisinger at gmail.com> wrote:
> 
> > Hi pq,
> > 
> > I use it in my wayland-next branch (for unstable wayland stuff) of 
> > the mpv
> > player: http://mpv.io/
> > In this commit:

> > https://github.com/mpv-player/mpv/commit/77cc885b44a9e95e5c3c9ae4961b9958ff5cf643
> 
> Good to know, thanks.
> 
> > I only just now realized that I should just use set_destination 
> > for my use
> > case.
> > So setting the destination separately is definitely a use case and 
> > I think
> > the set request is redundant.
> 
> True, but I'm worried how many upset people there will be if I break
> the protocol during the migration by removing or renaming something. 
> :-)
> There should be no-one as it's all experimental still, but...
> 
> > So far I really like the scaler extensions. But the scaling 
> > quality has
> > lots of room for improvement.
> > I thought about improving the scaling quality, but didn't had the
> > opportunity to look into it.
> 
> You mean in the Weston implementation? Yeah, that could very well 
> be. I
> think fixing that would come after
> https://bugs.freedesktop.org/show_bug.cgi?id=83895
> as it should make detecting the overall scaling factor a lot easier.
> 
> However, I'm more interested in the protocol aspect right now, and
> there the scaling quality cannot be specified IMHO. We have to leave
> room for hardware overlays doing the scaling in unknown ways.
> 
> 

Wouldn't it be useful if the protocol could have a method of 
presenting available scaling methods to the application so that the 
user could configure the preferred trade-off of performance vs quality?


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 181 bytes
Desc: This is a digitally signed message part
URL: <http://lists.freedesktop.org/archives/wayland-devel/attachments/20140916/4852cabc/attachment.sig>