EsenthalEngine/ThirdPartyLibs/FreeType/lib/ChangeLog

2016-09-08  Werner Lemberg  <[email protected]>

	* 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  <[email protected]>

	* src/truetype/ttinterp.c: Include `ttgxvar.h'.

	This fixes the `multi' build.

2016-09-08  Werner Lemberg  <[email protected]>

	[autofit] Another improvement to Armenian support.

	Suggested by Hrant H Papazian <[email protected]>.

	* src/autofit/afscript.h: Use better suited characters to derive
	default stem widths.

2016-09-07  Alexei Podtelezhnikov  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Microptimize.

2016-09-06  Alexei Podtelezhnikov  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.

2016-09-05  Alexei Podtelezhnikov  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[autofit] Improve Armenian support.

	Thanks to Hrant H Papazian <[email protected]> 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  <[email protected]>

	[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  <[email protected]>

	[truetype] More fixes for handling of GX deltas.

	Problems reported by Bob Taylor <[email protected]>.

	* 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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[unix] Enable 64bit support in file system access (#48962).

	* builds/unix/configure.raw: Call `AC_SYS_LARGEFILE'.

2016-09-02  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.

2016-09-02  Werner Lemberg  <[email protected]>

	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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	* src/cid/cidload.c (cid_face_open): Improve handling of `SDBytes'.

2016-08-26  Werner Lemberg  <[email protected]>

	[cid] Fix commit from 2016-05-16.

	* src/cid/cidparse.c (cid_parser_new): Fix off-by-one errors.

2016-08-26  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.

2016-08-26  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	[sfnt] Fix previous commit (#48901).

	* src/sfnt/ttcmap.c (tt_cmap4_char_map_binary): Thinkos.

2016-08-25  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	* include/freetype/internal/ftdriver.h: Remove unused typedefs.

2016-08-22  Alexei Podtelezhnikov  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[lzw] Optimize last commit.

	* src/lzw/ftzopen.c (ft_lzwstate_get_code): Move check into
	conditional clause.

2016-08-16  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[truetype] Fix compiler warning.

	* src/truetype/ttgload.c (load_truetype_glyph): Add cast.

2016-08-13  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	* src/truetype/ttinterp.c (Pop_Push_Count): Revert changes.

2016-08-11  Alexei Podtelezhnikov  <[email protected]>

	* src/truetype/ttinterp.c (TT_RunIns): Minor and formatting.

2016-08-11  Alexei Podtelezhnikov  <[email protected]>

	* src/truetype/ttinterp.c (Pop_Push_Count): Fix some entries.

2016-08-10  Peter Klotz  <[email protected]>

	* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.

2016-08-10  Werner Lemberg  <[email protected]>

	[sfnt] Use correct type for `italicAngle' field (#48732).

	* src/sfnt/ttload.c (tt_face_load_post): Fix types.

2016-08-06  Jon Spencer  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[smooth] Minor refactoring.

	* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
	Updated.

2016-07-29  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Minor.

	No functional change.

2016-07-22  Hin-Tak Leung  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[truetype] Sanitizer fix.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Increase array
	to fix nested loops.

2016-07-18  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	[truetype] Fix GETINFO bytecode instruction.

	* src/truetype/ttinterp.c (Ins_GETINFO): Fix return value for
	stretching information.

2016-07-16  Behdad Esfahbod  <[email protected]>

	[truetype] Make all glyphs in `Zycon' GX font work.

	* src/truetype/ttgxvar.c (ft_var_readpackedpoints): Fix boundary
	tests.

2016-07-16  Werner Lemberg  <[email protected]>

	[truetype] Fix GX delta tracing.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Trace
	relative point movements.

2016-07-16  Behdad Esfahbod  <[email protected]>

	[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  <[email protected]>

	* 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  <[email protected]>

	* src/truetype/ttinterp.c (Ins_MIRP): Fix copy-and-paste error.

	Problem reported by Hin-Tak Leung.

2016-07-15  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	[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  <[email protected]>

	* include/freetype/freetype.h (FT_IS_NAMED_INSTANCE): New macro.

2016-07-14  Werner Lemberg  <[email protected]>

	[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  <[email protected]>

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Fix tracing.

2016-07-14  Behdad Esfahbod  <[email protected]>

	[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
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