On 15-03-17 06:33 PM, Adam Twardoch (List) wrote:
> So actually, if I use the "coretext" shaper, then it doesn't really matter 
> whether the font has GSUB/GPOS or morx/kerx, because HB takes OT-lingo 
> feature spec, translates it to the AAT feature spec, and just calls CoreText, 
> and CoreText itself decides "what to do" with the AAT feature spec, i.e. 
> whether to use these features directly with morx/kerx or internally translate 
> it back to OT tags and use GSUB/GPOS. 
> 
> Right? 

Correct.

> A.
> 
>> On 18 Mar 2015, at 01:36, Behdad Esfahbod <[email protected]> wrote:
>>
>> On 15-03-17 05:27 PM, Adam Twardoch (List) wrote:
>>> Behdad, 
>>>
>>> What functionality does the coretext_aat shaper currently support?
>>
>> What the coretext_aat does is: if the font has 'mort' or 'morx' table, then
>> call the coretext shaper, otherwise fail (and let ot shaper handle).  It's
>> just a mechanism to choose which shaper to use.
>>
>>
>>> I can see that it does something with "mort" and "morx", but possibly not 
>>> "kerx" or the extended "kern" table? Or does it? With something like 
>>> hb-view, which options (if any) are passed on? Direction, script, language, 
>>> features? 
>>
>> Everything is supported.
>>
>>
>>> Thanks,
>>> A.
>>> _______________________________________________
>>> HarfBuzz mailing list
>>> [email protected]
>>> http://lists.freedesktop.org/mailman/listinfo/harfbuzz
>>>
> 
> 
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