https://bugs.webkit.org/show_bug.cgi?id=37984





--- Comment #30 from Dominik Röttsches (drott) <[email protected]>  
2013-01-11 00:33:08 PST ---
(In reply to comment #29)

Thanks, Behdad. 

> > Get rid of the simple path altogether, in WebKit?
> 
> Yes, that's the way it should be IMO.  The reason it's not possible right 
> now, is because WebKit does not cache shaping results.  As such, every time 
> text is being shown, it's being shaped and shown.  That's why supposedly the 
> complex text path is "too slow" for common usage.  With effective caching 
> it's possible to turn full shaping on for all scripts.  Indeed, that's what 
> Firefox does.

I don't know enough about it yet - but out of curiosity: would you have to 
cache the shaping coordinate results for arbitrary string length or is it a 
matter of caching the results for individual pairs of codepoints?

> I don't have any heuristics in mind.  You can start by adding Serbian, and 
> then add other languages when people nag.  

We can call it the nag-heuristic :-)

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