7d8d58ac81
[GPOS] Divide position_finish() into two phases, for advances and offsets
...
Right now the position_finish_advances() is empty. To be used for
spacing attachments proposal later.
2016-02-11 16:34:28 +07:00
8474231567
[ot] Minor shuffling code around
2016-02-11 16:27:41 +07:00
b0b11614e9
[GPOS] Add harmless recursion in fix_mark_attachment()
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Will do nothing. Just useful for merging two functions.
2016-02-11 15:28:55 +07:00
686567baab
[GPOS] Merge attach_chain() and cursive_chain()
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Differentiate, using new attach_type().
2016-02-11 15:25:28 +07:00
806ad8dc65
[GPOS] Minor shuffling
2016-02-11 14:53:11 +07:00
0f6278d1fb
[GPOS] Negate sign of attach_lookback(), and rename it to attach_chain()
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No behavior change. Preparing to unify how cursive and mark attachments
work.
2016-02-11 14:49:10 +07:00
fc38e6034c
[layout] Collect coverage glyphs in PairPos
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Apparently class=0 is used for ClassDef1. See:
https://github.com/adobe-type-tools/afdko/issues/90
2015-12-23 14:50:53 +01:00
550bd14d2b
Actually commit changes for previous commit
2015-11-04 22:58:58 -08:00
ff31b3c1b8
Skip GPOS cursive / attachment adjustmnent if none happened
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I'm starting to really like how free these new scratch_flags are.
2015-11-04 22:47:30 -08:00
f966649747
Fix another memory access issue discovered by libFuzzer
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Fixes https://github.com/behdad/harfbuzz/issues/139#issuecomment-146984679
2015-10-13 00:30:50 -04:00
f396fbb000
Fix return value of sanitize when subformat is not readable
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This is a fix on top of the previous issue fixed in
c917965b9e
2015-10-09 12:25:55 -04:00
b47159011c
Define return_trace()
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Not functional change (expected!).
2015-09-29 14:57:02 +01:00
c917965b9e
Add missing returns
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Fixes possible invalid read of two bytes.
Reported by Behzad Najjarpour Jabbari, Secunia Research.
2015-09-29 14:45:35 +01:00
6578575cc8
[GPOS] Fix cursive connection with mix of RTL and non-RTL lookups
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See thread "Issue with cursive attachment" started by Khaled.
Turned out fixing this wasn't as bad as I had assumed. I like the
new code better; we now have a theoretical model of cursive
connections that is easier to reason about.
2015-08-25 20:29:36 +01:00
58f2a73fb9
[GPOS] Rewrite cursive attachment slightly differently
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In anticipation for upcoming fix for bug reported by
Khaled in thread "Issue with cursive attachment".
2015-08-25 18:58:24 +01:00
2c8b3b2e53
[debug] Print lookup index in debug-apply output
2015-08-18 14:36:43 +01:00
fc3c59a1d7
Fix unused var warnings
2015-04-08 13:04:29 -07:00
bd047d3b7f
[layout] Minor
2015-02-25 15:43:31 -08:00
1a2322134a
[layout] Don't check glyph props against lookup flags when recursing
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Shouldn't be needed. I have a hard time imagining this breaking any
legitimate use case.
2015-02-25 15:43:30 -08:00
095a1257cc
[layout] Port sanitize() to use dispatch()
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Needed some rework of Extension table. Hopefully I got it right, and
the new template usage doesn't break any compilers...
2015-02-25 15:43:30 -08:00
40c58923cb
[layout] Refactor Lookup::dispatch()
2015-02-25 15:43:30 -08:00
70366f5d19
[layout] Refactor get_subtable()
2015-02-25 15:43:29 -08:00
f72f326aea
Minor
2015-02-25 15:43:29 -08:00
8e36ccfd4f
[layout] Use dispatch() for add_coverage()
2015-02-25 15:43:29 -08:00
50b8dc79da
[layout] Add may_dispatch()
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No functional change right now.
2015-02-25 15:43:29 -08:00
de2118ed7a
Make sanitize() a const method
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This makes a lot of code safer. We only try modifying the object in one
place, after making sure it's safe to do so. So, do a const_cast<> in
that one place...
2015-02-25 15:43:28 -08:00
6759ed95a3
Minor
2015-02-25 15:43:28 -08:00
6b599dac1f
Remove unnecessary check in sanitize
2015-02-25 15:43:28 -08:00
365576d246
[layout] Allocate iters in the context
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Can be further optimized, but I think I didn't break anything.
Saves another 3% off Roboto shaping.
2015-02-25 15:43:28 -08:00
514564f544
[layout] Move skippy_iter setup from constructor into init()
2015-02-25 15:43:27 -08:00
b051be542a
[lookup] Add skippy_iter.reset()
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Towards reducing the cost of initializing skippy_iter()
2015-02-25 15:43:27 -08:00
696266981d
[layout] Merge forward and backward iterators
2015-02-25 15:43:26 -08:00
37d13acd8d
[layout] Remove some unnecessary checks in skippy
2015-02-25 15:43:26 -08:00
baa14e1814
[lookup] Don't initialize skippy if coverage match fails
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Currently:
- Initializing skippy is very expensive,
- Our lookup accelerator (using set-digests) can be very ineffecite,
As such, we end up many times initializing skippy but then failing
coverage check. Reordering fixes that.
When, later, we fix our accelerator to have truly small false-positive
rate (for example by using the frozen-sets), then we might want to
reorder these checks such that we wouldn't calculate coverage number
if skippy is going to fail.
This shows a 5% speedup with Roboto already.
2015-02-25 15:43:26 -08:00
7788993bc1
[layout] Use setter method to set c->lookup_props
2015-02-25 15:43:25 -08:00
67dfa8c7c2
When matching second glyph of kerning pairs, use bsearch
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Roboto has glyphs (like 'F') that have 200 kerning pairs.
Add a handcoded bsearch instead of previous linear search.
This doesn't show much speedup though, apparently we spend the
bulk of the time somewhere before here.
2015-01-19 17:00:31 -08:00
093c520de5
[otlayout] Mark variables that are C arrays as opposed to OT::ArrayOf
2014-12-12 21:07:53 -08:00
00f6a8e334
[ot] Print format in dispatch trace
2014-12-12 20:36:49 -08:00
8f3eebf7ee
Make sure gsubgpos buffer vars are available during fallback_position
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Add buffer var allocation asserts to a few key places.
2014-08-02 19:07:49 -04:00
7627100f42
Mark unsigned integer literals with the u suffix
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Simplifies hb_in_range() calls as the type can be inferred.
The rest is obsessiveness, I admit.
2014-07-11 16:22:13 -04:00
6faff8e413
Add static storage classifier to inline functions
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Before we were just relying on the compiler inlining them and not
leaving a trace in our public API. Try to fix. Hopefully not
breaking anyone's build.
2014-04-28 14:30:44 -07:00
083225916a
Micro optimizations
2014-01-28 11:14:12 -05:00
333cc6e2d1
[otlayout] Remove unused is_inplace()
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Patch from Jonathan Kew.
2013-10-30 17:30:11 +00:00
ac8cd51191
Refactor
2013-10-18 19:33:09 +02:00
101303dbf7
[otlayout] More shuffling around
2013-10-18 11:21:15 +02:00
3ddf892b53
[otlayout] Renaming
2013-10-18 11:21:15 +02:00
6c48f20eea
[otlayout] Add structs for JSTF table
2013-09-09 15:43:10 -04:00
45f3d980c9
[OTLayout] Merge / templateize apply_string()
2013-05-04 16:04:04 -04:00
e015b8f218
[OTLayout] Minor
2013-05-04 16:04:04 -04:00
780cd930a9
[OTLayout] Minor
2013-05-04 16:04:04 -04:00
Behdad Esfahbod
Konstantin Ritt