[HarfBuzz] Amiri and OpenType performance

[Khaled Hosny]

On Mon, Apr 15, 2013 at 10:37:05PM +0200, Khaled Hosny wrote:
> On Mon, Apr 15, 2013 at 04:20:09PM -0400, Behdad Esfahbod wrote:
> > BTW, disabling 'kern' makes it more than twice faster!
> 
> Aha. Looks like my support for subtending marks is totally inefficient,
> it amounts for half the processing time! I guess I know where to look
> now.

Half of the kern overhead is from the duplication to support subtending
marks in both HarfBuzz and Uniscribe (I tried using ltra/rtla but that
doesn’t work). I’m still thinking of a more efficient way to do it.

Regards,
Khaled