On 08/21/2015 08:28 PM, Thomas Daede wrote:
I've been running nightly with this enabled for quite a while on Intel
and it's been fine.
Note that OMTC is required for e10s.
If you mean OMTC by "this" then you're right - it works fine on nightly
because nightly is built with in-tree cairo. Fedora it built with system
cairo which causes crashes with OMTC enabled. First build which supports
in-tree cairo & Gtk3 is FF41.
The layer acceleration pref is a totally different thing and will stay
off for the near future. It's affected by a bug in libxcb which has been
patched but not made it to release yet:
https://bugs.freedesktop.org/show_bug.cgi?id=84252
What do you mean here by "acceleration"? The offscreen surfaces
referenced in this post are CPU rendering.
ma.
On 08/21/2015 01:33 AM, Martin Stransky wrote:
Folks,
I'd use some testing for new Firefox feature - offscreen surfaces [1].
It may also fix crashes when OMTC is enabled [2]. Browser should be a
bit faster with those features on.
How to test?
- Install Firefox 40 on Fedora 22,23,Rawhide (you'd need Gtk3 build)
- go to about:config, click to any key and add a new one, boolean type.
The new key name is "layers.use-image-offscreen-surfaces" and set it to
true.
- enable "layers.offmainthreadcomposition.enabled" which may be disabled
now.
- restart your browser.
And you're set now. Please report any oddity (different than the usual
ones :)) at #BZ.
Thanks!
ma.
[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1015218
[2] Off Main Thread Composition - layout rendering in separate thread.
New feature in Firefox 40.
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