freetype/ChangeLog

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.


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