|
01be130d
|
2015-01-10T23:05:37
|
|
[truetype] Remove TT_CONFIG_OPTION_INTERPRETER_SWITCH.
Behdad suggested this code simplification, and nobody objected...
* include/config/ftoption.h, devel/ftoption.h
(TT_CONFIG_OPTION_INTERPRETER_SWITCH): Remove.
* src/truetype/ttinterp.c [TT_CONFIG_OPTION_INTERPRETER_SWITCH]:
Remove related code.
(ARRAY_BOUND_ERROR): Use do-while loop.
|
|
|
6cc1f123
|
2015-01-10T21:56:59
|
|
[truetype] More macro expansions.
* src/truetype/ttinterp.c, src/truetype/ttinterp.h (EXEC_ARG_,
EXEC_ARG): Remove by replacing with expansion.
|
|
|
24681455
|
2015-01-10T21:53:48
|
|
[truetype] More macro expansions.
Based on a patch from Behdad.
* src/truetype/ttinterp.c (SKIP_Code, GET_ShortIns, NORMalize,
SET_SuperRound, ROUND_None, INS_Goto_CodeRange, CUR_Func_move,
CUR_Func_move_orig, CUR_Func_round, CUR_Func_cur_ppem,
CUR_Func_read_cvt, CUR_Func_write_cvt, CUR_Func_move_cvt,
CURRENT_Ratio, INS_SxVTL, COMPUTE_Funcs, COMPUTE_Round,
COMPUTE_Point_Displacement, MOVE_Zp2_Point): Remove by replacing
with expansion.
(Cur_Func_project, CUR_Func_dualproj, CUR_fast_project,
CUR_fast_dualproj): Replace with macros `project', `dualproj',
`fast_project', `fast_dualproj'.
|
|
|
fae0c81f
|
2015-01-10T20:23:10
|
|
[truetype] More macro expansions.
* src/truetype/ttinterp.c (EXEC_OP_, EXEC_OP): Remove by replacing
with expansion.
|
|
|
5a752f33
|
2015-01-10T20:08:35
|
|
[truetype] Remove code for static TrueType interpreter.
This is a follow-up patch.
* src/truetype/ttinterp.c, src/truetype/ttinterp.h
[TT_CONFIG_OPTION_STATIC_INTERPRETER,
TT_CONFIG_OPTION_STATIC_RASTER]: Remove macros and related code.
|
|
|
1b4d68cf
|
2015-01-10T19:56:28
|
|
* src/truetype/ttinterp.c (CUR): Remove by replacing with expansion.
This starts a series of patches that simplifies the code of the
bytecode interpreter.
|
|
|
0098d550
|
2014-12-07T11:03:57
|
|
Uppercase all hex digits for orthogonality.
|
|
|
ed6a9df0
|
2014-12-06T23:28:58
|
|
Whitespace.
|
|
|
f34f1925
|
2014-11-26T21:59:21
|
|
* src/*: Add checks for parameters of API functions where missing.
`API functions' are functions tagged with `FT_EXPORT_DEF'.
Besides trivial fixes, the following changes are included, too.
* src/base/ftbdf.c (FT_Get_BDF_Charset_ID, FT_Get_BDF_Property): Set
error code if no service is available.
* src/base/ftinit.c (FT_Done_FreeType): Change return value for
invalid `library' parameter to `Invalid_Library_Handle'.
* src/base/ftobjs.c (FT_New_Size): Change return value for invalid
`asize' parameter to `Invalid_Argument'.
* src/base/ftoutln.c (FT_Outline_Copy): Change return value for
invalid `source' and `target' parameters to `Invalid_Outline'.
(FT_Outline_Done_Internal): Change return value for invalid
`outline' parameter to `Invalid_Outline'.
|
|
|
ef439fd2
|
2014-11-25T08:14:15
|
|
[Savannah bug #43682] Change some signatures to `void' return type.
* include/internal/pshints.h (PSH_Globals_SetScaleFunc),
include/internal/sfnt.h (TT_Get_Metrics_Func),
src/pshinter/pshglob.c (psh_globals_set_scale),
src/pshinter/pshrec.c (ps_hints_init), src/sfnt/ttmtx.c
(tt_face_get_metrics), src/truetype/ttinterp.c (TT_Goto_CodeRange,
TT_Set_CodeRange, TT_Clear_CodeRange, TT_Done_Context,
TT_Save_Context): Do it.
* src/pshinter/pshglob.h, src/pshinter/pshrec.h, src/sfnt/ttmtx.h,
src/truetype/ttgload.c (TT_Hint_Glyph), src/truetype/ttinterp.c
(TT_Run_Context), src/truetype/ttinterp.h, src/truetype/ttobjs.c
(tt_size_run_fpgm, tt_size_run_prep): Updated.
|
|
|
706f752b
|
2014-11-03T07:20:57
|
|
* src/truetype/ttinterp.c (Ins_DELTAP): Fix subpixel hinting.
Before this patch, it was impossible to ever call DELTAP[123] in
subpixel hinting mode as described in the ClearType whitepaper; it
only worked if in `compatibility mode'. However, compatibility mode
essentially disables SHPIX, completely ruining hinting of
ttfautohint output, for example.
We now follow the whitepaper more closely so that DELTAP[123]
instructions for touched points in the non-subpixel direction are
executed.
|
|
118e651b
|
2014-10-19T23:31:08
|
|
[truetype] Clean up bytecode rounding.
Zero distance does not have to be treated specially if you follow
specifications and check the sign as the very last step of rounding.
* src/truetype/ttinterp.c (Round_None, Round_To_Grid,
Round_Down_To_Grid, Round_Up_To_Grid, Round_To_Double_Grid): Use
macros when available, do not check for non-zero distance.
(Round_To_Half_Grid, Round_Super, Round_Super_45): Ditto, return phase
if sign changed.
|
|
|
7e83f068
|
2014-10-14T23:03:56
|
|
[truetype] Limit delta shift range.
The legal range for delta shift is zero through six. Negative values
are illegal according to
https://developer.apple.com/fonts/TrueType-Reference-Manual/RM04/Chap4.html#delta%20shift
* src/truetype/ttobjs.h (delta_shift, delta_base): Make unsigned.
* src/truetype/ttinterp.h (DO_SDS): Throw an error if delta_shift
out of range.
(Ins_DELTAP, Ins_DELTAC): Optimize for legal delta_shift.
|
|
|
125c3ca8
|
2014-09-02T22:38:59
|
|
[truetype] Shortcut ppem calculations for square pixels.
* src/truetype/ttinterp.h (TT_ExecContextRec): New field
`cur_ppem_func' with a function pointer.
* src/truetype/ttinterp.c (TT_RunIns): Initialize `cur_ppem_func'
depending on the pixel geometry to either...
(Current_Ppem_Stretched): ... this for stretched pixels.
(Current_Ppem): ... or this for square pixels.
(DO_MPPEM, DO_MPS, Ins_DELTAP, Ins_DELTAC): Use `cur_ppem_func'.
|
|
1ec98b29
|
2014-08-31T08:47:11
|
|
Don't use `register' keyword. Fixes compiler warnings.
* src/base/ftcalc.c (FT_Add64) [!FT_LONG64]: Do it.
* src/gzip/inftrees.c (huft_build): Ditto.
* src/truetype/ttinterp.c (TT_MulFix14_arm): Ditto.
|
|
|
a8bc49e1
|
2014-08-24T22:14:01
|
|
[truetype] Optimize DELTAP and DELTAC.
* src/truetype/ttinterp.c (Ins_DELTAP, Ins_DELTAC): Move ppem
calculations outside of the loop.
|
|
|
441b3f38
|
2014-07-13T02:28:14
|
|
[truetype] Improve handling of buggy `prep' tables.
In case of an error in the `prep' table, no longer try to execute it
again and again. This makes FreeType handle endless loops in buggy
fonts much faster.
* src/truetype/ttobjs.h (TT_SizeRec): The fields `bytecode_ready'
and `cvt_ready' are now negative if not initialized yet, otherwise
they indicate the error code of the last run.
* src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep,
tt_size_done_bytecode, tt_size_init_bytecode,
tt_size_ready_bytecode, tt_size_init, tt_size_done, tt_size_reset):
Updated.
* src/truetype/ttgload.c (tt_loader_init): Updated.
* src/truetype/ttinterp.c (TT_RunIns): Force reexecution of `fpgm'
and `prep' only if we are in the `glyf' table.
|
|
|
6497b9c5
|
2014-06-13T09:28:00
|
|
Fix compiler warnings.
Reported by Wojciech Mamrak <wmamrak@gmail.com>.
* src/autofit/afglobal.c (af_face_globals_compute_style_coverage),
src/autofit/afmodule.c (af_property_set): Fix `signed' vs.
`unsigned' issues.
* src/autofit/aflatin.c (af_latin_metrics_init_blues): Make compiler
happy.
* src/base/ftlcdfil.c (_ft_lcd_filter_fir): Use only four elements
for `fir'.
Fix `signed' vs. `unsigned' issues.
* src/sfnt/sfobjs.c (WRITE_BYTE): Removed, unused.
(WRITE_USHORT, WRITE_ULONG): Add proper casts.
* src/truetype/ttgload.c (TT_Get_VMetrics): Add proper casts.
* src/truetype/ttinterp.c (Ins_DELTAP): Add proper casts for `B1'
and `B2'.
|
|
7be2a94a
|
2014-02-08T13:55:38
|
|
Fix clang static analyzer and compiler warnings.
* src/autofit/afhints.c (af_glyph_hints_align_weak_points),
src/autofit/afloader (af_loader_load_g) <FT_GLYPH_FORMAT_COMPOSITE>,
src/base/ftcalc.c (FT_MSB), src/base/ftoutln.c
(FT_Outline_Decompose), src/bdf/bdfdrivr.c (bdf_interpret_style),
src/cff/cffparse.c (cff_parse_integer), src/cid/cidparse.c
(cid_parser_new), src/pfr/pfrload.c (pfr_phy_font_load),
src/raster/ftraster.c (Decompose_Curve), src/sfnt/sfdriver.c
(sfnt_get_ps_name), src/sfnt/ttcmap.c (tt_cmap12_next,
tt_cmap13_next), src/smooth/ftgrays.c (gray_hline): Remove dead
code.
* src/autofit/afmodule.c (af_property_get_face_globals,
af_property_set, af_property_get), src/base/ftbitmap.c
(ft_gray_for_premultiplied_srgb_bgra): Make functions static.
* src/base/ftobjs.c (ft_remove_renderer): Protect against
library == NULL.
(ft_property_do): Make function static.
* src/base/ftrfork.c: Include `ftbase.h'.
* src/sfnt/ttsbit.c (tt_face_load_sbix_image)
[!FT_CONFIG_OPTION_USE_PNG], src/type1/t1gload.c
(T1_Compute_Max_Advance): Avoid compiler warning.
* src/truetype/ttinterp.c (TT_New_Context): Reduce scope of
variable.
|
|
94c66944
|
2014-01-08T08:52:59
|
|
[arm] Fix Savannah bug #41138, part 2.
* builds/unix/ftconfig.in (FT_MulFix_arm), include/config/ftconfig.h
(FT_MulFix_arm), src/truetype/ttinterp.c (TT_MulFix14_arm): Fix
preprocessor conditionals for `add.w'.
|
|
|
b337fa25
|
2013-12-21T19:33:15
|
|
Fix Savannah bug #40975 (sort of).
* src/truetype/ttinterp.c (Ins_IP): Fix sign typo to make FreeType
behave the same as the Windows TrueType engine for the invalid case.
|
|
8bb09b0f
|
2013-12-11T09:01:13
|
|
[truetype] Simplify logic of rendering modes.
This patch unifies the subpixel and non-subpixel cases.
* src/truetype/ttinterp.h (TT_ExecContextRec): Remove
`grayscale_hinting'; all code should refer to `grayscale' instead.
Remove unused `native_hinting' member.
Rename `subpixel_hinting' member to `subpixel.
* src/truetype/ttgload.c (TT_LOADER_SET_PP): Updated.
(tt_loader_init): Updated.
* src/truetype/ttinterp.c (Ins_GETINFO): Simplify.
Updated.
|
|
|
7d449436
|
2013-11-02T11:36:37
|
|
[truetype] Fix GETINFO opcode handling of subpixel hinting bits.
* src/truetype/ttinterp.c (Ins_GETINFO): Don't request bit 6 set to
get info on subpixel hinting.
* docs/CHANGES: Updated.
|
|
|
ebf52d6a
|
2013-11-01T13:26:28
|
|
[truetype] Minor code refactoring.
Two benefits: The allocated FDEF (and IDEF) array gets slightly
smaller, and the `ttdebug' demo program has access to function
numbers without additional costs.
Fortunately, no changes to FontForge are necessary – this is the
only external TrueType debugger I know of, but others may exist and
should check the code accordingly.
* src/truetype/ttinterp.h (TT_CallRec): Replace `Cur_Restart' and
`Cur_End' with a pointer to the corresponding `TT_DefRecord'
structure.
* src/truetype/ttinterp.c (DO_JROT, DO_JMPR, DO_JROF, Ins_ENDF,
Ins_CALL, Ins_LOOPCALL, Ins_UNKNOWN, TT_RunIns <Invalid_Opcode>):
Updated.
|
|
|
41632b58
|
2013-10-15T11:40:34
|
|
[arm] Fix thumb2 inline assembly under LLVM.
When using `ADD' with an immediate operand, the instruction is
actually `ADD Rd, Rn, #<imm12>', that is, the maximum of the
immediate operand cannot exceed 4095. It will fail to compile with
LLVM.
However, in GCC, due to some legacy compatibility considerations,
`ADD.W' will be automatically emitted when the immediate operand is
larger than 4095.
* builds/unix/ftconfig.in, include/freetype/config/ftconfig.h
(FT_MulFix_arm) [__GNUC__]: Support clang compiler.
* src/truetype/ttinterp.c (TT_MulFix14_arm) [__GNUC__]: Ditto.
|
|
|
a32682f1
|
2013-08-06T00:21:46
|
|
Fix gcc pragmas, part 2.
* src/truetype/ttinterp.c (TT_MulFix14_long_long,
TT_DotFix14_long_long): `#pragma gcc diagnostic {push,pop}' has been
introduced with gcc version 4.6.
|
|
|
69e524d5
|
2013-08-05T23:38:32
|
|
Fix gcc pragmas.
* src/truetype/ttinterp.c (TT_MulFix14_long_long,
TT_DotFix14_long_long): Older gcc versions don't accept diagnostic
pragmas within a function body.
|
|
f66d48e9
|
2013-07-16T13:18:00
|
|
Add assembler code for TT_MulFix14 and TT_DotFix14.
This patch provides slightly optimized versions for ARM, x86, and
x86_64 CPUs if built with GCC.
Also remove some dead code.
* src/truetype/ttinterp.c (TT_MulFix14_arm, TT_MulFix14_long_long,
TT_DotFix14_long_long): New functions.
|
|
|
25b7da53
|
2013-06-19T10:23:36
|
|
* Version 2.5.0 released.
=========================
Tag sources with `VER-2-5-0'.
* docs/VERSION.DLL: Update documentation and bump version number to
2.5.0.
* README, Jamfile (RefDoc),
builds/win32/vc2005/freetype.vcproj, builds/win32/vc2005/index.html,
builds/win32/vc2008/freetype.vcproj, builds/win32/vc2008/index.html,
builds/win32/vc2010/freetype.vcxproj, builds/win32/vc2010/index.html,
builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj,
builds/win32/visualc/index.html, builds/win32/visualce/freetype.dsp,
builds/win32/visualce/freetype.vcproj,
builds/win32/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/2.4.12/2.5.0/, s/2412/250/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 5.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 16:2:10.
* src/base/ftobjs.c (FT_Open_Face): Pacify compiler.
* src/truetype/ttinterp.c (Ins_MSIRP, Ins_MIRP): Ditto.
|
|
|
99e60d84
|
2013-06-10T01:44:37
|
|
Fix Savannah bug #39160.
* src/truetype/ttinterp.c (Ins_SDPVTL): Set projection vector too
for the degenerate case.
|
|
|
2d6e1fbc
|
2013-05-23T08:01:20
|
|
Compilation fix.
* src/truetype/ttinterp.c (TT_RunIns)
[!TT_CONFIG_OPTION_SUBPIXEL_HINTING]: Make it work.
|
|
|
3c783c1b
|
2013-05-21T21:03:00
|
|
[truetype] Formatting and an additional subpixel tweak.
|
|
|
18f35ed1
|
2013-05-21T20:51:15
|
|
[truetype] Adjust subpixel zp2 moves and tweak rules.
|
|
|
63bfa832
|
2013-05-20T07:38:21
|
|
[truetype] Simplify and improve subpixel function detection.
Some small enhancements have allowed the removal of many macros and
the simplification of existing rules in `ttsubpix.c'.
* src/truetype/ttsubpix.h (SPH_TWEAK_ALLOW_X_DMOVEX,
SPH_TWEAK_ALLOW_X_MOVE_ZP2,
SPH_TWEAK_DELTAP_SKIP_EXAGGERATED_VALUES,
SPH_TWEAK_SKIP_INLINE_DELTAS, SPH_TWEAK_MIRP_CVT_ZERO): Removed.
(SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES_DELTAP): New rule macro.
* src/truetype/ttsubpix.c: Updated affected rules.
* src/truetype/ttinterp.c (Direct_Move_X): Updated.
(INS_FDEF): Add additional function detection.
(INS_ENDF): Set runtime flag.
(Ins_CALL): Skip the call under certain conditions.
Remove bad code.
(Ins_LOOPCALL): Skip the call under certain conditions.
Remove bad code.
(Move_Zp2_Point): Updated.
(Ins_SHPIX): Updated.
Skip the move under some situations.
(Ins_MIAP): Improve conditions.
(Ins_MIRP): Updated.
(Ins_DELTAP): Skip move under certain conditions.
Simplify conditions.
(TT_RunIns): Updated.
Add code to handle new function detection.
Trace messages.
|
|
|
f04951af
|
2013-05-17T13:51:07
|
|
[truetype] Add `interpreter-version' property.
This makes the option TT_CONFIG_OPTION_SUBPIXEL_HINTING controllable
at runtime.
* src/truetype/ttdriver.c: Include FT_TRUETYPE_DRIVER_H.
(tt_property_set, tt_property_get): Fill templates.
* src/truetype/ttobjs.h (TT_DriverRec): Add `interpreter_version'
member.
Remove unused `extension_component' member.
* src/truetype/ttgload.c: Include FT_TRUETYPE_DRIVER_H.
(tt_get_metrics, TT_Hint_Glyph, TT_Process_Simple_Glyph,
compute_glyph_metrics, tt_loader_init): Use `interpreter_version'.
* src/truetype/ttinterp.c: Include FT_TRUETYPE_DRIVER_H.
(SUBPIXEL_HINTING): New macro to check `interpreter_version' flag.
Update all affected functions to use it.
Use TT_INTERPRETER_VERSION_XXX where appropriate.
* src/truetype/ttobjs.c: Include FT_TRUETYPE_DRIVER_H.
(tt_driver_init): Initialize `interpreter_version'.
* src/truetype/ttsubpix.c: Include FT_TRUETYPE_DRIVER_H.
Use TT_INTERPRETER_VERSION_XXX where appropriate.
|
|
|
94152819
|
2013-05-04T16:40:12
|
|
More fixes for clang's `sanitize' feature.
* src/base/ftcalc.c (FT_DivFix): Use unsigned values for
computations which use the left shift operator and convert to signed
as the last step.
* src/base/fttrigon.c (ft_trig_prenorm, FT_Vector_Rotate,
FT_Vector_Length, FT_Vector_Polarize): Ditto.
* src/cff/cffgload.c (cff_decoder_parse_charstrings): Simplify.
* src/cff/cffload.c (cff_subfont_load): Fix constant.
* src/cff/cffparse.c (cff_parse_integer, cff_parse_real, do_fixed,
cff_parse_fixed_dynamic): Use unsigned values for computations which
use the left shift operator and convert to signed as the last step.
* src/cid/cidload.c (cid_get_offset): Ditto.
* src/psaux/psconv.c (PS_Conv_ToFixed): Ditto.
* src/psaux/t1decode.c (t1_decoder_parse_charstrings): Ditto.
* src/truetype/ttinterp.c (TT_MulFix14, TT_DotFix14): Ditto.
|
|
|
89f50647
|
2013-03-14T17:50:49
|
|
*/*: Use FT_ERR_EQ, FT_ERR_NEQ, and FT_ERR where appropriate.
FT_Err_XXX and friends are no longer directly used in the source
code.
|
|
|
e3c93015
|
2013-03-14T11:21:17
|
|
*/*: Use FT_Err_Ok only.
This is a purely mechanical conversion.
|
|
|
059bc335
|
2013-03-14T10:27:35
|
|
*/*: Use `FT_THROW'.
This is essentially a mechanical conversion, adding inclusion of
`FT_INTERNAL_DEBUG_H' where necessary, and providing the macros for
stand-alone compiling modes of the rasterizer modules.
To convert the remaining occurrences of FT_Err_XXX and friends it is
necessary to rewrite the code. Note, however, that it doesn't harm
if some cases are not handled since FT_THROW is a no-op.
|
|
|
00dfa330
|
2013-02-05T19:23:16
|
|
[truetype] A better fix for Savannah bug #38211.
* src/truetype/ttinterp.c (Ins_IP): Implement identical behaviour to
MS rasterizer if rp1 == rp2 (confirmed by Greg Hitchcock).
|
|
|
40633205
|
2013-02-01T12:55:44
|
|
[truetype] Fix Savannah bug #38211.
* src/truetype/ttinterp.c (Ins_IP): Make FreeType behave identical
to other interpreters if rp1 == rp2 (which is invalid).
|
|
|
6b9034f0
|
2013-01-28T13:56:23
|
|
Formatting, comment improvements.
|
|
|
c574d72c
|
2013-01-26T17:40:44
|
|
[truetype] Minor formatting fix.
|
|
|
a5fe3595
|
2013-01-26T12:29:52
|
|
[truetype] Align more to ClearType whitepaper for sph.
|
|
|
b6de8e66
|
2013-01-23T23:31:41
|
|
[base, truetype] New internal FT_Hypot function.
* include/freetype/fttrigon.h (FT_Hypot): Declare it.
* src/base/fttrigon.c (FT_Hypot): Define it.
* src/truetype/ttgload.c (TT_Process_Composite_Component): Use it
instead of explicit expressions.
* src/truetype/ttinterp.c (Current_Ratio, Normalize): Use it instead
of TT_VecLen.
(TT_VecLen): Removed.
|
|
|
0e0fdc5d
|
2013-01-12T23:05:55
|
|
[truetype] Improve accuracy of normalization of short vectors.
Unit vector components are stored as 2.14 fixed-point numbers. In
order to calculate all 14 bits accurately, a short vector to be
normalized has to be upscaled to at least 14 bits before its length
is calculated. This has been safe since accurate CORDIC algorithms
were adopted.
* src/truetype/ttinterp.c (Normalize): Scale short vectors by 0x4000.
|
|
|
081aba39
|
2013-01-12T22:36:37
|
|
[truetype] Kill very old vector normalization hacks.
Back in the days, vector length calculations were not very accurate
and the vector normalization function, Normalize, had to meticulously
correct the errors for long vectors [commit b7ef2b096867]. It was no
longer necessary after accurate CORDIC algorithms were adopted, but
the code remained. It is time to kill it.
* src/truetype/ttinterp.c (Normalize): Remove error compensation.
(TT_VecLen): Remove any mention of old less accurate implementation.
|
|
|
94b79e74
|
2012-12-17T19:17:30
|
|
[truetype] Remove unusued code and variables.
|
|
|
461cc936
|
2012-12-16T20:02:42
|
|
Merge branch 'master' of ssh://git.sv.nongnu.org/srv/git/freetype/freetype2
Conflicts:
src/truetype/ttinterp.c
|
|
|
71f242c2
|
2012-12-16T19:52:01
|
|
[truetype ] Remove unusued code. Add minor fixes.
|
|
|
e2fa4a6c
|
2012-12-16T20:19:56
|
|
[truetype] Remove dead code.
|
|
|
65d65721
|
2012-12-10T06:59:29
|
|
[truetype] Scale F_dot_P down.
The dot product between freeVector and projVector or cosine of
the angle between these FT_F2Dot14 unit vectors used to be scaled up
by 4 and routinely occupied 32 bits in an FT_Long field F_dot_P.
This patch scales the value down by 2^14 instead, which simplifies
its use throughout the bytecode interpreter.
This does not lead to the loss of precision because the lower bits
are unreliable anyway. Consider two unit vectors (1,0) and (.6,.8)
for which the true value of F_dot_P is .6 * 0x40000000 = 0x26666666.
These vectors are stored as (0x4000,0) and (0x2666,0x3333) after
rounding and F_dot_P is assigned 0x26660000. The lower bits were
already lost while rounding the unit vector components.
Besides code simplification, this change can lead to better
performance when FT_MulDiv with the scaled-down F_dot_P is less
likely to use the costly 64-bit path. We are not changing the type
of F_dot_P to FT_F2Dot14 at this point.
* src/truetype/ttinterp.c (Compute_Funcs): Scale F_dot_P down by 14
bits and modify its use accordingly.
(Direct_Move, Direct_Move_Orig, Compute_Point_Displacement): Modify
the use of F_dot_P field.
* src/truetype/ttobjs.c (tt_size_run_fpgm): Change arbitrary
assignment of F_dot_P to its theoretical maximum in case we decide
to scale back its type later.
|
|
|
13e87e04
|
2012-12-09T19:48:22
|
|
Formatting.
|
|
|
cece4d3b
|
2012-12-06T20:23:38
|
|
[truetype] Tweak the previous commit.
* src/truetype/ttinterp.c (Current_Ratio): Put unit vector
components as the second TT_MulFix14 arguments. This is required
on 16-bit systems.
|
|
|
5ad05f97
|
2012-12-06T00:27:20
|
|
[truetype] Microoptimizations in bytecode interpreter.
* src/truetype/ttinterp.c (TT_DivFix14): New macro.
(Normalize): Use it here.
(Current_Ratio): Use TT_MulFix14 instead of FT_MulDiv.
(Ins_SHPIX): Cancel out two TT_MulFix14 calls.
|
|
|
b50088bd
|
2012-12-05T23:05:47
|
|
[truetype] Cosmetic improvement in bytecode interpreter.
* src/truetype/ttinterp.c: Use explicit calls to FT_MulDiv,
FT_MulFix, and FT_DivFix instead of macros.
|
|
|
6a126e14
|
2012-11-28T23:32:02
|
|
[truetype] Fix formatting and typo.
|
|
|
24e897db
|
2012-10-20T22:23:01
|
|
[truetype] Cheaper way to threshold angles between vectors.
* src/truetype/ttinterp.c (Ins_ISECT): Thresholding tangent is a lot
cheaper than thresholding sine.
|
|
|
2df16761
|
2012-10-17T11:34:22
|
|
[truetype] Fix Savannah bug #37572.
* src/truetype/ttinterp.c (Ins_ISECT): Use angle between vectors to
avoid grazing intersections. The previous threshold was too coarse,
incorrectly rejecting short but valid vectors.
|
|
|
83c0ebab
|
2012-06-27T08:16:06
|
|
Fix conditional compilation.
* include/freetype/internal/ftcalc.h (FT_MulDiv_No_Round): Don't
enclose with `TT_USE_BYTECODE_INTERPRETER'; we now need the function
elsewhere also.
* src/autofit/afcjk.h: Use AF_CONFIG_OPTION_CJK.
* src/truetype/ttgload.c (tt_loader_init): Fix compiler warning.
* src/truetype/ttinterp.c (Ins_MSIRP): Fix compiler warning.
* src/truetype/ttinterp.h: Use
TT_CONFIG_OPTION_BYTECODE_INTERPRETER.
|
|
|
ed6508c4
|
2012-06-26T17:20:27
|
|
[truetype] Remove unused rounding functionality.
|
|
|
79e36bae
|
2012-06-18T10:36:06
|
|
[truetype] Support subpixel hinting.
This is the large, famous `Infinality' patch to support ClearType
bytecode which has been available from
http://www.infinality.net/blog/ for some time, and which has been
refined over the last years. While still experimental, it is now
mature enough to be included directly into FreeType.
Most of the code is based on the ClearType whitepaper written by
Greg Hitchcock
http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx
which gives a detailed overview of the necessary changes to the
Microsoft rasterizer so that older fonts are supported. However, a
lot of details are still missing, and this patches provides a
framework to easily handle rendering issues down to the glyph level
of certain fonts.
Note that ClearType support is not completely implemented! In
particular, full support for the options `compatible_widths',
`symmetrical_smoothing, and `bgr' (via the GETINFO bytecode
instruction) is missing.
* src/truetype/ttsubpix.c: New file, providing code to handle
`tweaks', this is, rules for certain glyphs in certain fonts
(including wildcards) which need a special treatment.
* src/truetype/ttsubpix.h: New file, holding the tweaking rules.
* include/freetype/config/ftoption.h, src/devel/ftoption.h
(TT_CONFIG_OPTION_SUBPIXEL_HINTING): New macro.
* include/freetype/internal/ftobjs.h (FT_PIX_FLOOR_GRID,
FT_PIX_ROUND_GRID, FT_PIX_CEIL_GRID): New macros.
* src/truetype/truetype.c [TT_USE_BYTECODE_INTERPRETER]: Include
`ttsubpix.c'.
* src/truetype/ttgload.c: Include `ttsubpix.h'.
[All changes below are guarded by TT_CONFIG_OPTION_SUBPIXEL_HINTING.]
(tt_get_metrics): Set tweak flags.
(TT_Hint_Glyph): Call `FT_Outline_EmboldenXY' if necessary.
(TT_Process_Simple_Glyph): Compensate emboldening if necessary.
(compute_glyph_metrics): Handle `compatible widths' option.
(tt_loader_init): Handle ClearType GETINFO information bits.
* src/truetype/rules.mk (TT_DRC_SRC): Updated.
* src/truetype/ttinterp.c: Include `ttsubpix.h'.
[Where necessary, changes below are guarded by
TT_CONFIG_OPTION_SUBPIXEL_HINTING.]
(Direct_Move, Direct_Move_X): Extended.
(Round_None, Round_To_Grid, Round_To_Half_Grid, Round_Down_To_Grid,
Round_Up_To_Grid, Round_To_Double_Grid, Round_Super, Round_Super_45,
SetSuperRound): Add parameter to handle the number of grid lines per
pixel.
(SET_SuperRound, ROUND_None, CUR_Func_round): Updated.
(DO_SROUND, DOS45ROUND, DO_ODD, DO_EVEN): Updated.
(DO_ROUND, DO_NROUND): Updated.
(DO_RS): Take care of `Typeman' bytecode patterns.
(Ins_FDEF): Add some debugging code. Commented out.
(Ins_ENDF): Restore state.
(Ins_CALL, Ins_LOOPCALL): Handle inline delta functions.
(Ins_MD): Handle `Vacuform' rounds.
(Move_Zp2_Point, Ins_SHPIX, Ins_MSIRP, Ins_MDAP, Ins_MIAP,
Ins_MDRP, Ins_MIRP): Handle tweaks.
(Ins_ALIGNRP): Add tweak guard.
(Ins_IUP, Ins_DELTAP): Handle tweaks.
(Ins_GETINFO): Handle new ClearType bits.
(TT_RunIns): Handle tweaks.
* src/truetype/ttinterp.h: Updated.
(SPH_TweakRule, SPH_ScaleRule): New structures for tweaks.
(TT_ExecContextRec): Add members for subpixel hinting support.
* src/truetype/ttobjs.h (TT_DefRecord): Add `inline_delta' member.
|
|
|
f1ec0842
|
2012-03-11T13:48:25
|
|
s/maximal/maximum/ everywhere, s/minimal/minimum/ where appropriate.
|
|
|
1054bc29
|
2012-03-10T09:30:27
|
|
[truetype] Improve comment.
|
|
|
e1899bcf
|
2012-03-10T09:28:24
|
|
[truetype] Fix SSW instruction.
* src/truetype/ttinterp.c (DO_SSW): SSW *does* use font units. For
verification, it took some time to find a font which actually uses
this instruction.
|
|
|
a33c013f
|
2012-03-01T14:04:30
|
|
[truetype] Fix Savannah bug #35646.
* src/truetype/ttinterp.c (Ins_MIRP): Typo, present since ages. The
code is now in sync with the other operators (e.g. MSIRP) which
modify twilight points.
|
|
|
5dddcc45
|
2012-03-01T07:52:24
|
|
[truetype] Fix Savannah bug #35640.
* src/truetype/ttinterp.c (SkipCode, TT_RunIns): Fix boundary check
for NPUSHB and NPUSHW instructions.
|
|
|
96cddb8d
|
2012-02-29T17:58:57
|
|
[truetype] Fix Savannah bug #35601.
* src/truetype/ttinterp.c (Ins_SHZ): Use number of points instead of
last point for loop.
Also remove redundant boundary check.
|
|
|
9eacbb81
|
2012-02-29T14:47:47
|
|
[truetype] Make SHC instruction behave similar to MS rasterizer.
* src/truetype/ttinterp.c (Ins_SHC): Handle virtual contour in
twilight zone.
|
|
|
d74285d1
|
2012-02-29T13:59:49
|
|
[truetype] Improve comments.
|
|
|
22fff253
|
2012-02-26T08:47:20
|
|
Whitespace.
|
|
|
b4e06818
|
2012-02-11T20:56:10
|
|
[truetype] Fix Savannah bug #35466.
Jump instructions are now bound to the current function. The MS
Windows rasterizer behaves the same, as confirmed by Greg Hitchcock.
* src/truetype/ttinterp.h (TT_CallRec): Add `Cur_End' element.
* src/truetype/ttobjs.h (TT_DefRecord): Add `end' element.
* src/truetype/ttinterp.c (DO_JROT, DO_JMPR, DO_JROF): Check upper
bound of jump address.
(Ins_FDEF, Ins_CALL, Ins_LOOPCALL, Ins_UNKNOWN, TT_RunIns): Updated.
|
|
1749d8bc
|
2012-01-17T02:00:24
|
|
Remove trailing spaces.
|
|
21472de1
|
2012-01-04T18:27:16
|
|
[truetype] Fix IP instruction if x_ppem != y_ppem.
* src/truetype/ttinterp.c (Ins_IP): Scale `orus' coordinates
properly.
|
|
|
f4ec60fd
|
2011-10-25T20:25:32
|
|
[truetype] Fix MD instruction for twilight zone.
* src/truetype/ttinterp.c (Ins_MD): Without this fix, the MD
instruction applied to original coordinates of twilight points
always returns zero.
|
|
|
bad0160c
|
2011-08-12T19:50:13
|
|
[truetype] Fix degenerate case in S{P,F,DP}VTL opcodes.
* src/truetype/ttinterp.c (Ins_SxVTL): Handle p1 == p2 specially.
(Ins_SDPVTL): Handle v1 == v2 specially.
|
|
|
22e44e06
|
2011-08-05T09:57:17
|
|
[truetype] Remove incorrect comments.
|
|
|
f2573a06
|
2011-08-05T09:07:21
|
|
[truetype] Fix some comments in the bytecode interpreter.
Thanks to Greg Hitchcock!
|
|
|
f1a981b5
|
2011-01-31T22:26:53
|
|
[truetype] Protect jump instructions against endless loops.
* src/truetype/interp.c (DO_JROT, DO_JMPR, DO_JROF): Exit with error
if offset is zero.
|
|
|
d6a213f8
|
2011-01-31T18:51:07
|
|
[truetype] Improve handling of invalid references.
* src/truetype/interp.c: Set even more TT_Err_Invalid_Reference
error codes only if pedantic hinting is active. At the same time,
try to provide sane values which hopefully allow useful
continuation. Exception to this is CALL and LOOPCALL – due to
possible stack corruption it is necessary to bail out.
|
|
|
96f04564
|
2011-01-31T10:24:32
|
|
[truetype] Improve handling of stack underflow.
* src/truetype/ttinterp.c (TT_RunIns, Ins_FLIPPT, Ins_DELTAP,
Ins_DELTAC): Exit with error only if `pedantic_hinting' is set.
Otherwise, try to do something sane.
|
|
|
0682251e
|
2011-01-30T16:38:09
|
|
* src/sfnt/ttmtx.c (tt_face_load_hmtx): Fix tracing message.
|
|
c61b3596
|
2011-01-30T16:29:45
|
|
[truetype]: Fix behaviour of MIAP for invalid arguments.
* src/truetype/ttinterp.c (Ins_MIAP): Set reference points even in
case of error.
|
|
|
dcdb3167
|
2011-01-18T07:35:26
|
|
[truetype] Fix handling of MIRP instruction.
Thanks to Greg Hitchcock who explained the issue.
* src/truetype/ttinterp.c (Ins_MIRP): Replace a `>=' operator with
`>' since the description in the specification is incorrect.
This fixes, for example, glyph `two' in font `Helvetica Neue LT Com
65 medium' at 15ppem.
|
|
9073e7ce
|
2010-11-26T11:58:08
|
|
[truetype] Better multi-threading support.
* src/truetype/ttinterp.c (TT_Load_Context): Reset glyph zone
references.
|
|
|
46c371c2
|
2010-10-25T00:14:13
|
|
Replace "%lx" for memory address by "%p", LLP64 platforms.
On LLP64 platforms (e.g. Win64), long (32-bit) cannot cover
the memory address (64-bit). Also the casts from the pointer
type to long int should be removed to preserve the address
correctly.
* src/raster/ftraster.c (New_Profile): Replace "%lx" by "%p".
(End_Profile) Ditto.
* src/truetype/ttinterp.c (Init_Context): Ditto.
|
|
|
0edf0986
|
2010-10-06T11:52:27
|
|
[truetype] Improve error handling of `SHZ' bytecode instruction.
Problem reported by Chris Evans <scarybeasts@gmail.com>.
* src/truetype/ttinterp.c (Ins_SHZ): Check `last_point'.
|
|
|
5edc2f33
|
2010-10-01T08:15:55
|
|
Fix Savannah bug #31040.
* src/truetype/ttinterp.c (free_buffer_in_size): Remove.
(TT_RunIns): Updated.
|
|
|
db053ec9
|
2010-09-17T23:20:00
|
|
[truetype] Don't duplicate size->twilight structure to be freed.
* src/truetype/ttinterp.c (free_buffer_in_size): Don't duplicate
FT_GlyphZoneRec size->twilight to be freed. If duplicated,
FT_FREE() erases the duplicated pointers only and leave original
pointers. They can cause the double-free crash when the burst
errors occur in TrueType interpreter and free_buffer_in_size()
is invoked repeatedly. See Savannah bug #31040 for detail.
|
|
|
afd89d30
|
2010-09-15T13:02:35
|
|
Make bytecode debugging with FontForge work again.
* src/truetype/ttinterp.c (TT_RunIns): Don't call
`free_buffer_in_size' in case of error if a debugger is active.
|
|
|
6abb9232
|
2010-09-14T09:02:10
|
|
Improve tracing messages.
* src/truetype/ttinterp.c (TT_RunIns): Improve wording of tracing
message.
* src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Add
tracing message.
* src/truetype/ttgload.c (tt_loader_init): Add tracing message.
* src/cache/ftcsbits.c (ftc_snode_load): Emit tracing message if
glyph doesn't fit into a small bitmap container.
|
|
|
5220ef58
|
2010-09-13T07:32:22
|
|
Fix minor issues reported by <muktha.narayan@wipro.com>.
* src/autofit/aflatin.c (af_latin_compute_stem_width): Remove
redundant conditional check.
* src/base/ftsynth.c (FT_GlyphSlot_Embolden): Ditto.
* src/cff/cffload.c (cff_encoding_load): Remove conditional check
which always evaluates to `true'.
* src/pshinter/pshalgo.c (ps_glyph_interpolate_strong_points):
Ditto.
* src/truetype/ttinterp.c (Ins_IUP): Ditto.
* src/cid/cidgload.c (cid_slot_load_glyph): Don't check for NULL if
value is already dereferenced.
* src/winfonts/winfnt.c (FNT_Load_Glyph): Fix check of `face'.
|
|
|
0eb657b0
|
2010-08-31T13:29:05
|
|
[truetype] Decrease the trace level catching the interpreter error.
* src/truetype/ttinterp.c (TT_RunIns): Decrease the trace level
showing the error when the interpreter returns with an error,
from FT_TRACE7() to FT_TRACE1().
|
|
29e044a4
|
2010-08-31T01:23:30
|
|
[truetype] Prevent bytecode reuse after the interpretation error.
* src/truetype/ttinterp.c (free_buffer_in_size): New function to
free the buffer allocated during the interpretation of this glyph.
(TT_RunIns): Unset FT_Face->size->{cvt_ready,bytecode_ready} if
an error occurs in the bytecode interpretation. The interpretation
of invalid bytecode may break the function definitions and referring
them in later interpretation is danger. By unsetting these flags,
`fpgm' and `prep' tables are executed again in next interpretation.
Fix Savannah bug #30798, reported by Robert Swiecki.
|
|
|
346f1867
|
2010-08-06T00:47:57
|
|
Fix Savannah bug #30657.
* src/truetype/ttinterp.c (BOUNDSL): New macro.
Change `BOUNDS' to `BOUNDSL' where appropriate.
* src/truetype/ttinterp.h (TT_ExecContextRec): Fix type of
`cvtSize'.
|
|
|
888cd184
|
2010-07-08T07:29:42
|
|
Fix Savannah bug #30361.
* src/truetype/ttinterp.c (Ins_IUP): Fix bounds check.
|
|
|
a2d225e3
|
2010-07-01T11:37:09
|
|
[truetype] Protect against code range underflow.
* src/truetype/ttinterp.c (DO_JROT, DO_JMPR, DO_JROF): Don't allow
negative IP values.
|
|
|
462ddb40
|
2010-07-01T11:28:43
|
|
[truetype] Add rudimentary tracing for bytecode instructions.
* src/truetype/ttinterp.c (opcode_name) [FT_DEBUG_LEVEL_TRACE]: New
array.
(TT_RunIns): Trace opcodes.
|
|
|
370aea80
|
2010-06-08T08:37:11
|
|
Formatting.
|
|
|
6da023d1
|
2010-05-20T15:38:00
|
|
TrueType: Make FreeType ignore maxSizeOfInstructions in `maxp'.
Acroread does the same.
* src/truetype/ttgload.c (TT_Process_Composite_Glyph): Call
`Update_Max' to adjust size of instructions array if necessary and
add a rough safety check.
(load_truetype_glyph): Save `loader->byte_len' before recursive
call.
* src/truetype/ttinterp.h, src/truetype/ttinterp.c (Update_Max):
Declare it as FT_LOCAL.
|