Commit Graph

31 Commits

Author SHA1 Message Date
Behdad Esfahbod 5d874d566f [GPOS] Fix mark-to-mark positioning when one of the marks is a ligature
This commit: a3313e5400 broke MarkMarkPos
when one of the marks itself is a ligature.  That regressed 26 Tibetan
tests (up from zero!).  Fix that.  Tibetan back to zero.
2012-07-28 21:05:25 -04:00
Behdad Esfahbod dadede012e Minor 2012-07-28 18:13:09 -04:00
Behdad Esfahbod 0b99429ead [GSUB/GPOS] Add get_coverage() and use it to speed up main loop
And use it to speed up the hotspot by checking coverage directly in
the main loop, not 10 functions deep in.

Gives me a solid 20% boost with Indic test suite.  Less so for less
lookup-intensive scenarios.

Remove the "fast_path" hack from before.
2012-07-28 17:46:35 -04:00
Behdad Esfahbod ea278d3895 Partially switch ot shaper to shape_plan 2012-07-27 02:12:28 -04:00
Behdad Esfahbod a3313e5400 [GPOS] Fix MarkMarkPos applied to results of MultipleSubst
This was broken as a result of 7b84c536c1.
As Khaled reported, MarkMark positioning was broken with glyphs
resulting from a MultipleSubst.  Fixed.  Test with the ALLAH character
in Amiri.
2012-07-25 18:37:51 -04:00
Behdad Esfahbod ec8d249469 Make data members of various OpenType structs protected instead of private
Should fix warnings generated when building with -Wunused-private-field.
Based on patch from Jonathan Kew.
2012-07-24 15:40:37 -04:00
Behdad Esfahbod 34a7440b7c [GPOS] Don't zero mark advances
Fixes more of Telugu, Kannada, and Oriya.

May break things (outside Indic...), but we cannot think of any font relying
on this immediately.
2012-07-20 12:40:39 -04:00
Behdad Esfahbod e72b360ac6 Refactor / finish would_apply() operation
Untested.
2012-07-19 14:44:46 -04:00
Behdad Esfahbod 6d08c7f1b3 Revert "Towards templatizing common Lookup types"
This reverts commit 727135f3a9.

This is work-in-progress.  Didn't mean to push it out just yet.
2012-07-11 18:01:27 -04:00
Behdad Esfahbod 727135f3a9 Towards templatizing common Lookup types 2012-07-11 18:00:28 -04:00
Behdad Esfahbod f211d5c291 More Oops! Fix fast-path with sub-type==0 2012-06-09 03:11:22 -04:00
Behdad Esfahbod b1de6aa1f3 Oops! 2012-06-09 03:07:59 -04:00
Behdad Esfahbod faf0f20253 Add sanitize() logic for fast-paths 2012-06-09 03:02:36 -04:00
Behdad Esfahbod 4e766ff28d Add fast-path for GPOS too
Shaves another 3% for DejaVu Sans long Latin strings.
2012-06-09 02:53:57 -04:00
Behdad Esfahbod 44b8ee0c90 Minor 2012-06-09 00:23:24 -04:00
Behdad Esfahbod 7b84c536c1 In MarkBase attachment, only attach to first of a MultipleSubst sequence
This is apparently what Uniscribe does.  Test case is:

  SEEN FATHA TEH ALEF

with Arabic Typesetting.  Originally reported by Khaled Hosny.
2012-06-08 22:04:23 -04:00
Behdad Esfahbod 68b76121f8 Fix regressions introduced by sed. Ouch!
Introduced in 99c2695759.
Broken mark-mark and mark-ligature stuff.
2012-06-08 10:47:00 -04:00
Behdad Esfahbod 99c2695759 Add accessort to buffer for current info, current pos, and prev info 2012-05-13 15:45:18 +02:00
Behdad Esfahbod 5df809b655 [GSUB/GPOS] Remove context_length
The spec doesn't say contextual matching should be done this way,
and AOTS doesn't do it either.  It was inherited from old HarfBuzz.
Remove it.
2012-05-13 15:17:51 +02:00
Behdad Esfahbod cee7187447 [Indic] Move syllable tracking from Indic to generic layer
This is to incorporate it into GSUB/GPOS processing.
2012-05-11 11:41:39 +02:00
Behdad Esfahbod acea183e98 Add return annotation for APPLY 2012-05-11 02:33:11 +02:00
Behdad Esfahbod 0ab8c86217 Annotate SANITIZE return values
More to come, for APPLY, CLOSURE, etc.
2012-05-11 02:11:52 +02:00
Behdad Esfahbod a9844d41c6 Combine lig_id and lig_comp into one byte, to free up one for Indic 2012-05-09 17:53:13 +02:00
Behdad Esfahbod 5b93e8d94f Update copyright headers 2012-04-23 22:26:27 -04:00
Behdad Esfahbod 650ac00da3 Minor refactoring 2012-04-23 13:17:09 -04:00
Behdad Esfahbod c6035cf802 Add names to enums
gdb was showing <anonymous enum> instead of useful stuff, so name
all our enums.
2012-04-12 13:23:59 -04:00
Behdad Esfahbod 41ae674f68 Don't create hb_apply_context_t per glyph!
I couldn't measure significant performance gains out of this; maybe
about 5% (with one million Malayalam strings).  Still, not bad.
But reminds me that optimizing this codebase without profiling first
is simply not going to work.  Oh well...
2012-04-11 17:13:50 -04:00
Behdad Esfahbod 4ab9731154 Refactor mark skipping 2012-01-16 22:20:31 -05:00
Behdad Esfahbod 4d3aeb8cb2 [GSUB/GPOS] Fix mark skip indexing issues
Mozilla bug 701637 and 714067 combined.

Patch from Jonathan Kew.
2012-01-16 16:43:26 -05:00
Behdad Esfahbod ae9877dea6 Add hhea-table support 2011-08-17 15:00:10 +02:00
Behdad Esfahbod 7a750ac33e Rename table files from eg maxp-private.hh to maxp-table.hh 2011-08-17 14:19:59 +02:00