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freetype/ChangeLog
Alexei Podtelezhnikov 6ca54c6430 [smooth] Fix valgrind warning and reoptimize. 
The algorithm calls `gray_set_cell' at the start of each new contour
or when the contours cross the cell boundaries. Double-checking for
that is wasteful.

* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
2016-09-11 16:00:52 -04:00

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2016-09-11 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Fix valgrind warning and reoptimize.
The algorithm calls `gray_set_cell' at the start of each new contour
or when the contours cross the cell boundaries. Double-checking for
that is wasteful.
* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
2016-09-10 Werner Lemberg <wl@gnu.org>
[sfnt] Fix previous commit.
Problems reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40
We now map the strike index right before accessing the physical
data, not earlier.
* src/sfnt/sfobjs.c (sfnt_load_face): Set `face->sbit_strike_map'
after creating the map so that...
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): ... this function
can be used before and after setting up `sbit_strike_map'.
(tt_face_set_sbit_strike): Revert change.
(tt_sbit_decoder_init, tt_face_load_sbix_image): Map strike index.
* src/truetype/ttdriver.c (tt_size_select): Revert change.
2016-09-09 Werner Lemberg <wl@gnu.org>
[ftfuzzer] Minor improvements.
* src/tools/ftfuzzer/ftfuzzer.cc (LLVMFuzzerTestOneInput): Ignore
invalid strikes.
Use better values for call to `FT_Set_Char_Size'.
2016-09-09 Werner Lemberg <wl@gnu.org>
[sfnt] Don't provide (completely) broken strike data.
FreeType tries to sanitize strike header data; we now reject
completely broken ones.
* include/freetype/internal/tttypes.h (TT_FaceRec): New
`sbit_strike_map' array pointer.
* src/base/ftobjs.c (FT_Match_Size): Reject matches where either
width or height would be zero.
Add tracing message in case of error.
* src/sfnt/sfobjs.c (sfnt_load_face): Populate `sbit_strike_map',
only using (more or less) valid strike header data for
FT_Face's `available_sizes' array.
(sfnt_done_face): Updated.
* src/sfnt/ttsbit.c (tt_face_set_sbit_strike): Use
`sbit_strike_map'.
(tt_face_load_strike_metrics): Improve tracing.
* src/truetype/ttdriver.c (tt_size_select): Use `sbit_strike_map'.
2016-09-08 Werner Lemberg <wl@gnu.org>
* Version 2.7 released.
=======================
Tag sources with `VER-2-7'.
* docs/VERSION.TXT: Add entry for version 2.7.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.6.5/2.7/, s/265/27/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 7.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 18:6:12.
* CMakeLists.txt (VERSION_MINOR): Set to 7.
(VERSION_PATCH): Set to 0.
* docs/CHANGES: Updated.
2016-09-08 Werner Lemberg <wl@gnu.org>
* src/truetype/ttinterp.c: Include `ttgxvar.h'.
This fixes the `multi' build.
2016-09-08 Werner Lemberg <wl@gnu.org>
[autofit] Another improvement to Armenian support.
Suggested by Hrant H Papazian <hpapazian@gmail.com>.
* src/autofit/afscript.h: Use better suited characters to derive
default stem widths.
2016-09-07 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_hline): Microptimize.
2016-09-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Operate in absolute bitmap coordinates.
Simpler bitmap addressing improves performance by 1.5%.
* src/smooth/ftgrays.c (gray_TWorker): Remove count fields.
(gray_dump_cells, gray_find_cell, gray_set_cell, gray_hline,
gray_sweep, gray_convert_glyph, gray_raster_render): Updated.
2016-09-06 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Improve contour start (take 2).
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
(gray_convert_glyph): Make initial y-coordinate invalid.
2016-09-06 Werner Lemberg <wl@gnu.org>
[type1] MM fonts support exactly zero named instances (#48748).
* src/type1/t1load.c (T1_Get_MM_Var): Set `num_namedstyles' to zero.
2016-09-06 Jonathan Kew <jfkthame@gmail.com>
[cff] Fix uninitialized memory.
Problem reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1270288
* src/cff/cf2interp.c (cf2_interpT2CharString): Initialize `storage'
array to handle a `get' opcode without a previous `put'.
2016-09-05 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.
2016-09-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Improve contour start.
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
2016-09-05 Werner Lemberg <wl@gnu.org>
[cff] Fix memory initialization.
* src/cff/cf2stack.c (cf2_stack_init): Use `FT_NEW'. The `Q'
variants of FreeType's memory allocation macros don't do zeroing.
2016-09-05 Werner Lemberg <wl@gnu.org>
[ftrandom] Minor improvements.
* src/tools/ftrandom/ftrandom.c (_XOPEN_SOURCE): New macro, set to
500.
* src/tools/ftrandom/Makefile (CFLAGS): Split off include
directories to ...
(INCLUDES): ... this new variable.
(LDFLAGS): New variable.
(ftrandom.o, ftrandom): Updated.
2016-09-05 Werner Lemberg <wl@gnu.org>
[autofit] Improve Armenian support.
Thanks to Hrant H Papazian <hpapazian@gmail.com> for help.
* src/autofit/afblue.dat (AF_BLUE_STRING_ARMENIAN_*): Improve
selection of characters.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.
2016-09-04 Werner Lemberg <wl@gnu.org>
[ftrandom] Improve Makefile.
It now supports both a normal build (`./configure && make') and a
development build (`make devel').
* src/tools/ftrandom/Makefile (VPATH): Set it so that
`libfreetype.a' gets searched in both `objs' (for the development
build) and `objs/.libs' (for a normal build which uses libtool).
(LIBS): Add missing libraries.
(ftrandom.o): New rule.
(ftrandom): Use automatic variables.
2016-09-03 Werner Lemberg <wl@gnu.org>
[truetype] More fixes for handling of GX deltas.
Problems reported by Bob Taylor <Bob.Taylor@monotype.com>.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix rough
sanity test for glyph variation array header size.
Always set stream position before reading packed x and y deltas.
Fix thinko w.r.t. `localpoints' array.
2016-09-03 Werner Lemberg <wl@gnu.org>
[ftrandom] Various fixes.
* src/tools/ftrandom/ftrandom.c (GOOD_FONTS_DIR): Provide better
default.
(error_fraction): Make it of type `double' to work as advertized –
this was completely broken.
Update all related code.
(error_count, fcnt): Make it unsigned to fix compiler warnings.
Update all related code.
(fontlist): Change `len' member to `long' to fix compiler warnings.
(FT_MoveTo, FT_LineTo, FT_ConicTo, FT_CubicTo, abort_test): Tag
unused variables.
(TestFace, FindFonts, copyfont, do_test): Fix compiler warnings.
(ExecuteTest): Ditto.
Call `FT_Done_FreeType'.
(getErrorCnt): Replace `ceil' with an ordinary cast to `unsigned
int'.
(usage): Improve output.
(main): Fix compiler warnings.
* src/tools/ftrandom/README: Updated.
2016-09-03 Werner Lemberg <wl@gnu.org>
[base] Avoid negative bitmap stroke dimensions (#48985).
* src/base/ftobjs.c (FT_Open_Face): Check whether negation was
actually successful. For example, this can fail for value
-32768 if the type is `signed short'. If there are problems,
disable the stroke.
2016-09-03 Werner Lemberg <wl@gnu.org>
[cff] Avoid null pointer passed to FT_MEM_COPY (#48984).
* src/cff/cffload.c (cff_index_get_name): Check `byte_len'.
2016-09-02 Werner Lemberg <wl@gnu.org>
[unix] Enable 64bit support in file system access (#48962).
* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.
2016-09-02 Werner Lemberg <wl@gnu.org>
[sfnt] Avoid left shift of negative value (#48980).
* src/sfnt/ttsbit.c (tt_sbit_decoder_load_bit_aligned): Use unsigned
constant.
2016-09-02 Werner Lemberg <wl@gnu.org>
* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.
2016-09-02 Werner Lemberg <wl@gnu.org>
Some preparations for the next release.
* include/freetype/config/ftoption.h
(TT_CONFIG_OPTION_SUBPIXEL_HINTING): Enable.
* docs/CHANGES: Updated.
2016-09-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Simplify span rendering more.
It turns out that there is significant cost associated with `FT_Span'
creation and calls to `gray_render_span' because it happerns so
frequently. This removes these steps from our internal use but leaves
it alone for `FT_RASTER_FLAG_DIRECT" to preserve API. The speed gain
is about 5%.
* src/smooth/ftgrays.c (gray_render_span): Removed. The code is
migrated to...
(gray_hline): ... here.
2016-08-30 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Streamline pixmap drawing a bit more.
Zero coverage is unlikely (1 out of 256) to warrant checking. This
gives 0.5% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
2016-08-29 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Streamline pixmap drawing.
This gives 2% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (TPixmap): Reduced pixmap descriptor with a
pointer to its bottom-left and pitch to be used in...
(gray_TWorker): ... here.
(gray_render_span): Move pixmap flow check from here...
(gray_raster_render): .. to here.
2016-08-27 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Reduce stack of band boundaries.
* src/smooth/ftgrays.c (gray_TBand): Removed.
(gray_convert_glyph): Updated to stack band boundaries concisely.
2016-08-26 Werner Lemberg <wl@gnu.org>
* src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'.
2016-08-26 Werner Lemberg <wl@gnu.org>
[cid] Fix commit from 2016-05-16.
* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.
2016-08-26 Werner Lemberg <wl@gnu.org>
[sfnt] Cache offset and size to bitmap data table.
This commit avoids `EBDT' and friends being looked up again and
again while loading a single embedded bitmap.
* include/freetype/internal/tttypes.h (TT_FaceRec)
[TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: New fields `ebdt_start' and
`ebdt_size'.
* src/sfnt/ttsbit.c (tt_sbit_decoder_init): Move table lookup to ...
(tt_face_load_sbit): ... this function; also store the table size
and offset.
2016-08-26 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.
2016-08-26 Werner Lemberg <wl@gnu.org>
[type1] Fix heap buffer overflow.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36
* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
contain glyph names.
2016-08-25 Werner Lemberg <wl@gnu.org>
[sfnt] Fix previous commit (#48901).
* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.
2016-08-25 Werner Lemberg <wl@gnu.org>
[sfnt] Speed up handling of invalid format 4 cmaps.
* src/sfnt/ttcmap.c (tt_cmap4_next, tt_cmap4_char_map_binary): Add
tests for `num_glyph' from `tt_cmap4_char_map_linear'.
2016-08-25 Werner Lemberg <wl@gnu.org>
* include/freetype/internal/ftdriver.h: Remove unused typedefs.
2016-08-22 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Simplify span rendering.
This removes unnecessary complexity of span merging and buffering.
Instead, the spans are rendered as they come, speeding up the
rendering by about 5% as a result.
* src/smooth/ftgrays.c [FT_MAX_GRAY_SPANS]: Macro removed.
(gray_TWorker): Remove span buffer and related fields.
(gray_sweep, gray_hline): Updated.
* include/freetype/ftimage.h: Remove documentation note about
`FT_MAX_GRAY_SPANS', which was never in `ftoption.h' and is now gone.
2016-08-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix `MPS' instruction.
According to Greg Hitchcock, MPS in DWrite really returns the point
size.
* src/truetype/ttobjs.h (TT_SizeRec): Add `point_size' member.
* src/truetype/ttdriver.c (tt_size_request): Set `point_size'.
* src/truetype/ttinterp.h (TT_ExecContextRec): Add `pointSize'
member.
* src/truetype/ttinterp.c (TT_Load_Context): Updated.
(Ins_MPS): Fix instruction.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Optimize last commit.
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
conditional clause.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Avoid invalid left shift.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1295366
* src/lzw/ftzopen.c (ft_lzwstate_get_code): Limit `num_bits'.
2016-08-16 Werner Lemberg <wl@gnu.org>
[lzw] Avoid buffer overrun.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1273283
* src/lzw/ftzopen.c (ft_lzwstate_refill): Ensure `buf_size' doesn't
underflow.
2016-08-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix compiler warning.
* src/truetype/ttgload.c (load_truetype_glyph): Add cast.
2016-08-13 Werner Lemberg <wl@gnu.org>
[winfonts] Avoid zero bitmap width and height.
Reported as
https://bugzilla.mozilla.org/show_bug.cgi?id=1272173
* src/winfonts/winfnt.c (FNT_Face_Init): Check zero pixel height.
(FNT_Load_Glyph): Check for zero pitch.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (Pop_Push_Count): Revert changes.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (TT_RunIns): Minor and formatting.
2016-08-11 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries.
2016-08-10 Peter Klotz <Peter.Klotz@ith-icoserve.com>
* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.
2016-08-10 Werner Lemberg <wl@gnu.org>
[sfnt] Use correct type for `italicAngle' field (#48732).
* src/sfnt/ttload.c (tt_face_load_post): Fix types.
2016-08-06 Jon Spencer <jon@jonspencer.ca>
[sfnt] Fix `FT_Get_Advance' for bitmap strikes.
`FT_Get_Advance' returns 0 for bitmap fonts. It first gets the
advance value from the font table and then scales it by the
`font->size->metrics->x_scale' field. But `FT_Select_Size' doesn't
set that value for bitmap fonts and the advance gets scaled to zero.
Taken from
https://github.com/behdad/harfbuzz/issues/252
* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
<TT_SBIT_TABLE_TYPE_EBLC>: Set scale values.
2016-08-06 Behdad Esfahbod <behdad@behdad.org>
[truetype] Fix GX variation handling of composites.
* src/truetype/ttgload.c (load_truetype_glyph)
[TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Check `ARGS_ARE_XY_VALUES' flag.
2016-08-05 Alexei Podtelezhnikov <apodtele@gmail.com>
[smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
2016-07-29 Werner Lemberg <wl@gnu.org>
[sfnt, truetype] Don't abort on invalid `maxComponentDepth'.
Since 2016-05-16 we detect infinite recursion directly.
* src/sfnt/ttload.c (tt_face_load_maxp): Don't adjust
`maxComponentDepth'.
* src/truetype/ttgload.c (load_truetype_glyph): Don't abort if
`maxComponentDepth' is not valid. Instead, simply adjust its value
and emit a tracing message.
2016-07-26 Werner Lemberg <wl@gnu.org>
* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.
No functional change.
2016-07-22 Hin-Tak Leung <htl10@users.sourceforge.net>
[truetype] Record the end of IDEFs.
To match the logic in FDEF. The value of the end is only used for
bound-checking in `Ins_JMPR', so it may not have been obvious that
it was not recorded. Tested (as part of Font Validator 2.0) all the
fonts on Fedora and did not see any change.
* src/truetype/ttinterp.c (Ins_IDEF): Updated.
2016-07-19 Werner Lemberg <wl@gnu.org>
[truetype] Sanitizer fix, second try.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests and use only one slot more.
2016-07-19 Werner Lemberg <wl@gnu.org>
[truetype] Sanitizer fix.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
to fix nested loops.
2016-07-18 Werner Lemberg <wl@gnu.org>
[truetype] Make GETDATA work only for GX fonts.
* src/truetype/ttinterp.c (opcode_name): Updated.
(Ins_GETDATA): Only define for `TT_CONFIG_OPTION_GX_VAR_SUPPORT'.
(TT_RunIns): Updated.
2016-07-17 Werner Lemberg <wl@gnu.org>
[truetype] Add support for Apple's
GETDATA[], opcode 0x92
bytecode instruction. It always returns 17, and we have absolutely
no idea what it is good for...
* src/truetype/ttinterp.c (Pop_Push_Count, opcode_name): Updated.
(Ins_GETDATA): New function.
(TT_RunIns): Add it.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Add bytecode support for GX variation fonts.
This commit implements undocumented (but confirmed) stuff from
Apple's old bytecode engine.
GETVARIATION[], opcode 0x91
This opcode pushes normalized variation coordinates for all axes
onto the stack (in 2.14 format). Coordinate of first axis gets
pushed first.
GETINFO[], selector bit 3
If GX variation support is enabled, bit 10 of the result is set
to 1.
* src/truetype/ttinterp.c: Include FT_MULTIPLE_MASTERS_H.
(opcode_name) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated.
(Ins_GETINFO) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle selector
bit 3, checking support for variation glyph hinting.
(Ins_GETVARIATION) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New function
to implement opcode 0x91.
(TT_RunIns) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Handle opcode 0x91.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix GETINFO bytecode instruction.
* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
stretching information.
2016-07-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] Make all glyphs in `Zycon' GX font work.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
tests.
2016-07-16 Werner Lemberg <wl@gnu.org>
[truetype] Fix GX delta tracing.
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
relative point movements.
2016-07-16 Behdad Esfahbod <behdad@behdad.org>
[truetype] More fixes for GX.
This finally fixes the rendering of the cyclist and the lizard in
the `Zycon' font.
* src/truetype/ttgxvar.c (ft_var_readpackedpoints): `first' point
index is always cumulative.
(tt_handle_deltas): Rename to...
(tt_interpolate_deltas): ... This.
Add new parameter for output point array.
Update caller.
(TT_Vary_Apply_Glyph_Deltas): Add `points_out' array; it now holds
the intermediate results of `tt_interpolate_deltas' that are to be
added to `outline->points'.
2016-07-15 Werner Lemberg <wl@gnu.org>
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Thinko.
`max_pos' is always larger than `min_pos' so `FT_ABS' is not needed.
Reported by Alexei.
2016-07-16 Nikolaus Waxweiler <madigens@gmail.com>
* src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.
Problem reported by Hin-Tak Leung.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] Update and improve segment and edge tracing.
* src/autofit/afhints.c (af_glyph_hints_dump_segments): Trace
`delta' also.
Don't show first point of segment as a replacement for `pos'; this
is (a) misleading, since the difference to `pos' can be almost
arbitrarily large in corner cases, and (b) it is better to have all
segment data in font units instead of a single value given in output
space coordinates.
Improve layout.
(af_glyph_hints_dump_edges): Show px->units and units->px conversion
values for convenience.
Improve layout.
2016-07-15 Werner Lemberg <wl@gnu.org>
[autofit] For edges, reject segments wider than 1px (#41334).
* src/autofit/afhints.h (AF_SegmentRec): New member `delta'.
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Compute
`delta'.
(af_latin_hints_compute_edges): Reject segments with a delta larger
than 0.5px.
2016-07-14 Werner Lemberg <wl@gnu.org>
* include/freetype/freetype.h (FT_IS_NAMED_INSTANCE): New macro.
2016-07-14 Werner Lemberg <wl@gnu.org>
[sfnt] Fix `face_index' value in `FT_Face' for named instances.
* src/sfnt/sfobjc.s (sfnt_init_face): Don't strip off higher 16bits.
2016-07-14 Werner Lemberg <wl@gnu.org>
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing.
2016-07-14 Behdad Esfahbod <behdad@behdad.org>
[truetype] Fix gxvar delta interpolation.
The coordinates of the base font should be used for interpolation
purposes, NOT the current points (i.e., the result of accumulation
of previous deltas).
* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Initialize
`points_org' before looping over all tuples.
----------------------------------------------------------------------------
Copyright 2016 by
David Turner, Robert Wilhelm, and Werner Lemberg.
This file is part of the FreeType project, and may only be used, modified,
and distributed under the terms of the FreeType project license,
LICENSE.TXT. By continuing to use, modify, or distribute this file you
indicate that you have read the license and understand and accept it
fully.
Local Variables:
version-control: never
coding: utf-8
End:
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