[PATCH weston] README: introduce libweston

[Pekka Paalanen]

On Wed, 15 Jul 2015 09:52:38 -0700
Bryce Harrington <bryce at osg.samsung.com> wrote:

> On Wed, Jul 15, 2015 at 01:03:24PM +0100, Daniel Stone wrote:
> > Hi,
> > 
> > On 14 July 2015 at 11:07, Pekka Paalanen <ppaalanen at gmail.com> wrote:
> > > From: Pekka Paalanen <pekka.paalanen at collabora.co.uk>
> > >
> > > What is libweston and where do we intend to go with it.
> > 
> > Sounds good to me, although the bit about always using
> > --with-cairo=image just makes me lean even more towards removing the
> > other options.
> 
> What exactly does that affect inside Weston?  Is it just some of the
> example clients, or does it affect stuff that actual users would care
> about?

It mainly affects the toytoolkit, which flavour of Cairo it will use
for everything. It doesn't affect the compositor as such, but as it
affects all demo clients which includes weston-desktop-shell, it will
impact all users.

Until we actually fix that, I recommend people to build with the
default flavour "image".

A quick fix would be to have a runtime switch in toytoolkit to ask for
cairo-egl, and default to cairo-image. This way we'd limit the
cairo-egl impact to just the demos that actually ask for it.

A more involved fix would be to get rid of cairo-egl completely, and
remove the support from toytoolkit. Then demos that depended on it
would need to get their decorations drawn with cairo-image, copied into
textures, and blitted in GL to the surface.


Thanks,
pq