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67 Commits

Author SHA1 Message Date
Behdad Esfahbod 7549d447ba [>64k:glyf] Implement composites for >64k 
Implements https://github.com/be-fonts/boring-expansion-spec/issues/42
 2022-07-12 13:42:52 -06:00
Behdad Esfahbod 09de94788b [>64k:glyf] Hid composite glyphIndex 2022-07-12 13:42:52 -06:00
Behdad Esfahbod b0cb9a1a63 Make get_leading_bearing return bool 
Fixes https://github.com/harfbuzz/harfbuzz/issues/3496

Part of supporting >64k glyphs correctly.
 2022-07-03 15:32:32 -06:00
Behdad Esfahbod 115e1a03e7 [glyf] Relax condition for matching number of coords 2022-07-03 14:45:12 -06:00
Behdad Esfahbod 800760c5bd [glyf] Rename get_extents functions for clarity 2022-07-03 13:21:06 -06:00
Behdad Esfahbod ab327f93b7 [glyf] Fix another bug with scaling 
Of advances this time.

That codepath is never exercised though, if font has HVAR table.
 2022-07-03 13:17:03 -06:00
Behdad Esfahbod f46ddeba48 [hmtx/glyf] Rename side-bearing functions for clarity 2022-07-03 13:12:49 -06:00
Behdad Esfahbod b2d60cbd6e [glyf] Rename advance functions for clarity 2022-07-03 12:56:48 -06:00
Behdad Esfahbod 35c00c1216 [hmtx] Rename advance functions for clarity 2022-07-03 12:54:17 -06:00
Behdad Esfahbod 6b82d4faa1 [glyf] Make an optional argument non-optional 2022-07-03 12:45:27 -06:00
Behdad Esfahbod 3ef590808f [glyf] Internal flip a variable 2022-07-03 12:44:24 -06:00
Behdad Esfahbod 78b4f39821 [glyf] Fix confusion between scaled vs unscaled lsb 
Was always broken.
 2022-07-03 12:39:55 -06:00
Behdad Esfahbod 6665881c7d [glyf] Change side-bearing rounding 2022-07-03 12:39:55 -06:00
Behdad Esfahbod 34c6c0193c [glyf] Fix byterange check again 2022-06-27 20:26:57 -06:00
Behdad Esfahbod 20572f914c [glyf] Move read_flags into a function 2022-06-27 20:22:09 -06:00
Behdad Esfahbod 6e72c2e3fa [glyf] Add an assertion 2022-06-27 15:09:25 -06:00
Behdad Esfahbod 3a0e27e794 [glyf] Move comment 2022-06-27 13:07:39 -06:00
Behdad Esfahbod d0836dee7a [glyf] Minor typo change 2022-06-27 13:05:58 -06:00
Behdad Esfahbod 5cca25e5d0 [glyf] Accumulate points as int 
Everything is int at this stage.
Doesn't seem to matter for performance though.
 2022-06-27 13:03:06 -06:00
Behdad Esfahbod d6f60b3c19 [glyf] Minor optimization 2022-06-27 13:00:08 -06:00
Behdad Esfahbod b30a3dcba3 [glyf] Another bounds check 
Very unlikely that is needed but technically possible.
 2022-06-27 12:56:54 -06:00
Behdad Esfahbod 2e9dbdcbbe [glyf] Protect against an unlikely overflow 2022-06-27 12:55:13 -06:00
Behdad Esfahbod f1fb8c4489 [glyf] Optimize Glyph layout 2022-06-27 12:41:46 -06:00
Behdad Esfahbod 34e3f561b5 [glyf] Fix a bug I introduced recently 
Pass gid to Glyph in trim_padding codepath.
 2022-06-27 12:39:35 -06:00
Behdad Esfahbod 19cbfb9ce9 [glyf] Relax a condition that font num_coords be equal to gvar's 
gvar itself still checks the same.
 2022-06-27 12:32:18 -06:00
Behdad Esfahbod d5cfbaa068 [glyf] Optimize composite points loading 2022-06-27 12:24:20 -06:00
Behdad Esfahbod 32dc0641e1 [glyf] Remove an unnecessary condition 2022-06-27 12:22:06 -06:00
Behdad Esfahbod 3c49a6a60a [glyf] Fix an allocation error 
Try fixing assertion failure found by fuzzers:

hb-draw-fuzzer: ../../src/harfbuzz/src/OT/glyf/glyf.hh:175: bool OT::glyf_accelerator_t::get_points(hb_font_t *, hb_codepoint_t, T) const [T = OT::glyf_impl::path_builder_t]: Assertion `count >= glyf_impl::PHANTOM_COUNT' failed.
 2022-06-27 10:57:51 -06:00
Behdad Esfahbod a1c45bbb55 [glyf] Minor simplify 2022-06-26 17:30:16 -06:00
Behdad Esfahbod a21a9bb855 [glyf] Optimize flags decoding byte range checking 2022-06-26 17:24:29 -06:00
Behdad Esfahbod 0f1fdf461c [glyf] Optimize points decoding byte range checking 2022-06-26 17:22:45 -06:00
Behdad Esfahbod 51cfcf2957 [glyf] Optimize points decoding 2022-06-26 17:04:47 -06:00
Behdad Esfahbod 86b7022503 [glyf] Optimize flag decoding 2022-06-26 17:02:32 -06:00
Behdad Esfahbod 2bb0fa878a [glyf] Remove unneeded point init() 2022-06-26 16:43:05 -06:00
Behdad Esfahbod fc72a1d22d [glyf] Add a pre-allocation for phantom points 2022-06-26 16:42:01 -06:00
Behdad Esfahbod 8d242aaa8b [glyf] Rewrite a loop harmlessly 
I hope...
 2022-06-26 16:36:08 -06:00
Behdad Esfahbod cf57f04ddb [glyf/path-builder] Optimize scaling code 
Scale each point once upon entry to function.

This makes our shape fetching code as fast as FreeType for all
benchmark cases now.
 2022-06-26 16:26:17 -06:00
Behdad Esfahbod b095df1343 [glyf/path-builder] Use operator bool for style 2022-06-26 16:12:50 -06:00
Behdad Esfahbod abb433d0f4 [glyf] Avoid a copy of points in shape fetching for simple glyphs 
Matches performance with freetype now.
 2022-06-26 16:09:32 -06:00
Behdad Esfahbod 7eac779abf Revert "Revert "[glyf] Optimize shape loading"" 
This reverts commit 164bd288cf.
 2022-06-26 16:02:27 -06:00
Behdad Esfahbod 164bd288cf Revert "[glyf] Optimize shape loading" 
This reverts commit f0819301b7.

Broke tests. To be debugged and redone.
 2022-06-26 16:01:15 -06:00
Behdad Esfahbod f0819301b7 [glyf] Optimize shape loading 
Do away with a copy for simple glyph load.
 2022-06-26 15:52:54 -06:00
Behdad Esfahbod 65b066f18e [glyf/path-builder] Simplify initialization 2022-06-26 13:18:00 -06:00
Behdad Esfahbod 2d4557fe04 [glyf/SimpleGlyph] Use member pointer instead of lambda 2022-06-26 13:08:37 -06:00
Behdad Esfahbod 9ce9773040 [glyf/SimpleGlyph] Minor use constructor for contour_point_t 2022-06-26 13:08:37 -06:00
Behdad Esfahbod f897978f21 [glyf] Adjust a check-range 2022-06-26 13:08:37 -06:00
Behdad Esfahbod db039d97ff [glyf/Composite] Make glyphIndex public 2022-06-26 13:08:37 -06:00
Behdad Esfahbod 1b14bf8aa8 [glyf] Rename CompositeGlyphChain to CompositeGlyphRecord 2022-06-26 13:08:37 -06:00
Behdad Esfahbod a5ac7f2ea6 [glyf/composite_iter_t] Renames 2022-06-26 13:08:37 -06:00
Behdad Esfahbod 449bdeed5f [glyf] Rename get_iterator() to iter() 
That's the standard name.
 2022-06-25 18:32:30 -06:00