On 14/09/2015 15:58, Simon Fraser wrote:
Just to clarify, this is an OSX-wide problem, and not specific to WebKit.
WebKit is dependent on underlying libraries for text rendering, graphics
and compositing, and this bug is a consequence of rendering text into
transparent textures, when the destination pixel colors are unknown.
Considerable engineering effort was spent earlier this year in trying
to come
up with a solution to this problem. Some of this happened in
WebKit[1], but
unfortunately we were not able to come up with a solution that worked well
in all cases. It’s still a high priority item for us, but we are very
dependent on
other frameworks.
I did make an improvement which should make animations less likely to
trigger
changes in text rendering[2]. Does your content still show lots of
text flickers
in El Capitan or a recent WebKit nightly?
Thanks Simon. It's reassuring to know this is still a priority, at
least. I don't have access to a machine with El Capitan, but in a recent
WebKit nightly, the problem seems to be somewhat ameliorated vs Safari
8, but I'm still seeing quite a lot of flickering fonts, including in
areas that aren't animating, and the page occasionally getting "stuck"
in the wrong antialiasing mode: https://www.youtube.com/watch?v=hVoE9fLukQk
Jon
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