On 05/14/2014 11:58 PM, Pekka Paalanen wrote:
On Wed, 14 May 2014 12:56:27 -0700
Bill Spitzak <spit...@gmail.com> wrote:
The wayland build instructions also include the building of pixman and
cairo in order to enable the cairo gl backend.
However I get the impression that weston does not use this unless a
switch --with-cairo=gl is passed to configure. Only then does it produce
calls to attempt to make a context (they fail on my machine so it uses
the image backend anyway). Also without this switch weston clients
happily link with and run with the system cairo which has no gl backend.
Yes.
Since I am trying to figure out working build instructions, I was
wondering what to do with this step:
1. Remove the compilation of pixmap & cairo
I'm not sure why the Pixman manual build is there still. Maybe simply
outdated, perhaps it was a dependency of the Cairo version required to
have working cairo-gl.
2. Add the --with-cairo=gl switch
3. It actually works without that switch, it's just that it is broken on
my machine where no egl works.
I would be ok with just dropping the Cairo build instructions.
Personally I think cairo-gl/cairo-glesv2 are not useful for Weston
demos. You lose weston-gears and the screensaver, but I think those
should be ported away from cairo-gl anyway.
For reference:
http://lists.freedesktop.org/archives/wayland-devel/2014-April/014538.html
Summary: getting rid of cairo-egl (which is a requirement for cairo-gl
and cairo-glesv2, so these would get rid of too) seems to be accepted,
but the discussion on what should replace it is still open.
In that light, I think dropping the cairo-gl/glesv2 build instructions
would be nice, and it might kick the replacement issue discussion
forward.
Okay I'll do that to my patch for the build instructions (did anybody
see that, any opinions?)
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