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Issue 909884 link

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Status: Available
Owner: ----
Cc:
ebra...@gnu.org
behdad@chromium.org
bunge...@chromium.org
tzik@chromium.org
kojii@chromium.org
e...@chromium.org
drott@chromium.org
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EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 3
Type: Task



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FontCache scaling

Project Member Reported by ebra...@gnu.org, Nov 28 
I don't know about latest status of the flag (chrome://flags/#enable-font-cache-scaling) but from  Bug 608650  and the fact we've switched to HarfBuzz for AAT fonts, we can have a better granularity than "on other platforms than Mac" by checking presence of `trak` table using currently available APIs of HarfBuzz, or, make harfbuzz to provide a new API, then shipping the feature to public and remove the flag I guess.

Comment 1 by ebra...@gnu.org, Nov 28

Description: Show this description

Comment 2 by behdad@google.com, Nov 28 

Also, what *is* this cache actually caching?

Comment 3 by kojii@chromium.org, Nov 29

Cc: tzik@chromium.org
+tzik@ ?

Comment 4 by e...@chromium.org, Dec 3

Status: Available (was: Untriaged)

Comment 5 by ebra...@gnu.org, Dec 3 

HarfBuzz now provides hb_aat_layout_has_tracking as a API, if that is the only thing that invalidates word caching across different font sizes.

Comment 6 by kojii@chromium.org, Dec 4 

tzik@, are we going to ship the flag ever? IIRC we're removing it sometime in future, does my memory seem to serving correctly?
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