src/truetype/ttinterp.c


Log

Author Commit Date CI Message
Werner Lemberg 24a1fcdf 2015-10-15T21:50:15 [truetype] Add TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES (#46208). * devel/ftoption.h, include/freetype/config/ftoption.h (TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES): New configuration macro. * src/truetype/ttinterp.c (MAX_RUNNABLE_OPCODES): Removed. (TT_RunIns): Updated.
Werner Lemberg 837ad9d4 2015-10-15T21:15:45 * src/truetype/ttinterp.c (TT_RunIns): Fix bytecode stack tracing. The used indices were off by 1.
Alexei Podtelezhnikov 09635264 2015-08-31T23:14:46 Minor.
Werner Lemberg eb1bba9b 2015-06-30T09:46:39 Fix some clang compiler warnings. * src/base/ftoutln.c (FT_Outline_EmboldenXY), src/cff/cf2intrp.c (cf2_interpT2CharString), src/truetype/ttgload.c (load_truetype_glyph), src/truetype/ttgxvar.c (tt_handle_deltas), src/truetype/ttinterp.c (Ins_INSTCTRL): Fix signedness issues.
Alexei Podtelezhnikov 5aaabb44 2015-06-29T22:46:54 [truetype] Speed up bytecode interpreter. * src/truetype/ttinterp.c (Normalize): Use `FT_Vector_NormLen'.
Werner Lemberg e1862306 2015-06-07T16:11:18 * Version 2.6 released. ======================= Tag sources with `VER-2-6'. * docs/VERSION.DLL: Update documentation and bump version number to 2.6. * 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/2.5.5/2.6/, s/255/26/. * include/freetype/freetype.h (FREETYPE_MINOR): Set to 6. (FREETYPE_PATCH): Set to 0. * builds/unix/configure.raw (version_info): Set to 18:0:12. * CMakeLists.txt (VERSION_MINOR): Set to 0. (VERSION_PATCH): Set to 6. * src/autofit/afmodule.c [!FT_MAKE_OPTION_SINGLE_OBJECT]: Add declarations for dumping functions. * src/truetype/ttinterp.c (TT_New_Context): Pacify compiler. * builds/toplevel.mk: Use `freetype.mk's code to compute the version string. Don't include a zero patch level in version string. * builds/freetype.mk: Remove code for computing the version string.
Werner Lemberg 54d04286 2015-06-01T12:12:06 [truetype] While tracing opcodes, show code position and stack. * src/truetype/ttinterp.c: Change all existing TRACE7 calls to TRACE6. (opcode_name): Add string lengths. (TT_RunIns): Implement display of code position and stack.
Werner Lemberg a5e1f6f3 2015-05-24T23:29:23 [truetype] Fix commit from 2015-05-22. * src/truetype/ttgload.c, src/truetype/ttinterp.c: Guard new code with `TT_CONFIG_OPTION_SUBPIXEL_HINTING'. Problem reported by Nikolaus Waxweiler <madigens@gmail.com>.
Werner Lemberg 7f099482 2015-05-24T09:50:24 [truetype] Fix return values of GETINFO bytecode instruction. * src/truetype/ttinterp.h (TT_ExecContextRec): New fields `vertical_lcd' and `gray_cleartype'. * src/truetype/ttgload.c (tt_loader_init): Initialize new fields. Change `symmetrical smoothing' to TRUE, since FreeType produces exactly this. * src/truetype/ttinterp.c (Ins_GETINFO): Fix selector/return bit values for symmetrical smoothing, namely 11/18. Handle bits for vertical LCD subpixels (8/15) and Gray ClearType (12/19).
Werner Lemberg bb435da2 2015-05-23T07:21:25 [truetype] Minor. * src/truetype/ttinterp.h (TT_ExecContext): s/subpixel/subpixel_hinting. * src/truetype/ttgload.c, src/truetype/ttgload.h: Updated.
Werner Lemberg c61cad86 2015-05-22T22:02:15 [truetype] Support selector index 3 of the INSTCTRL instruction. This flag activates `native ClearType hinting', disabling backwards compatibility mode as described in Greg Hitchcocks whitepaper. In other words, it enables unrestricted functionality of all TrueType instructions in ClearType. * src/truetype/ttgload.c (tt_get_metrics): Call `sph_set_tweaks' unconditionally. (tt_loader_init): Unset `ignore_x_mode' flag if bit 2 of `GS.instruct_control' is active. * src/truetype/ttinterp.c (Ins_INSTCTRL): Handle selector index 3. (Ins_GETINFO): Updated. * docs/CHANGES: Document it.
Werner Lemberg 790b8dfb 2015-05-20T12:33:40 [truetype] Minor.
Alexei Podtelezhnikov 40623a1f 2015-04-27T22:27:00 [truetype] Speed up IUP. * src/truetype/ttinterp.c (_iup_worker_interpolate): Separate trivial snapping to the same position from true interpolation.
Werner Lemberg d9c3f151 2015-02-17T09:21:26 [truetype] More signedness fixes. * include/internal/tttypes.h, src/truetype/ttinterp.h, src/truetype/ttobjs.h, src/truetype/ttinterp.c, src/truetype/ttobjs.c: Apply.
Werner Lemberg f57fc59e 2015-01-17T20:41:43 Run `src/tools/update-copyright'.
Werner Lemberg f796cf6c 2015-01-17T20:11:10 Normalize copyright notice format.
Behdad Esfahbod 531d463a 2015-01-14T17:46:55 [truetype] Allocate TT_ExecContext in TT_Size instead of TT_Driver. Previously the code had stipulation for using a per-TT_Size exec context if `size->debug' was true. But there was no way that `size->debug' could *ever* be true. As such, the code was always using the singleton `TT_ExecContext' that was stored in `TT_Driver'. This was, clearly, not threadsafe. With this patch, loading glyphs from different faces from different threads doesn't crash in the bytecode loader code. * src/truetype/ttobjs.h (TT_SizeRec): Remove `debug' member. (TT_DriverRec): Remove `context' member. * src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Remove `TT_ExecContext' code related to a global `TT_Driver' object. (tt_driver_done): Don't remove `TT_ExecContext' object here but ... (tt_size_done_bytecode): ... here. (tt_driver_init): Don't create `TT_ExecContext' object here but ... (tt_size_init_bytecode): ... here, only on demand. * src/truetype/ttinterp.c (TT_Run_Context): Remove defunct debug code. (TT_New_Context): Remove `TT_ExecContext' code related to a global `TT_Driver' object. * src/truetype/ttinterp.h: Updated. * src/truetype/ttgload.c (TT_Hint_Glyph, tt_loader_init): Updated.
Werner Lemberg 2af74c9b 2015-01-11T10:08:09 [truetype] Better grouping of functions in `ttinterp.c'. No code change.
Werner Lemberg 95b57052 2015-01-11T09:50:49 [truetype] Prettyfing. * src/truetype/ttinterp.c (project, dualproj, fast_project, fast_dualproj): Rename to... (PROJECT, DUALPROJ, FAST_PROJECT, FAST_DUALPROJ): ... this.
Werner Lemberg ea173c04 2015-01-11T08:58:54 * src/truetype/ttinterp.c (Ins_JROT, Ins_JROF): Simplify. Based on a patch from Behdad.
Werner Lemberg 628578c6 2015-01-11T08:53:31 * src/truetype/ttinterp.c (Ins_SxVTL): Simplify function call.
Werner Lemberg 08e7909a 2015-01-11T08:45:50 * src/truetype/ttinterp.c (Normalize): Remove unused argument.
Werner Lemberg 4aaadf46 2015-01-11T08:42:28 [truetype] More macro expansions. * src/truetype/ttinterp.c (FT_UNUSED_EXEC): Remove macro by expansion.
Werner Lemberg d03a67a1 2015-01-11T08:39:14 [truetype] More macro expansions. * src/truetype/ttinterp.c (INS_ARG): Remove macro by expansion, adjusting funtion calls where necessary. (FT_UNUSED_ARG): Removed, no longer needed.
Werner Lemberg 7e1db6d4 2015-01-11T00:56:55 Formatting, typos.
Werner Lemberg eb341368 2015-01-11T00:23:27 [truetype] More macro expansions. Based on a patch from Behdad. * src/truetype/ttinterp.c (DO_*): Expand macros into corresponding `Ins_*' functions. (TT_RunIns): Replace `DO_*' macros with `Ins_*' function calls. (ARRAY_BOUND_ERROR): Remove second definition, which is no longer needed. (Ins_SVTCA, Ins_SPVTCA, Ins_SFVTCA): Replaced with... (Ins_SxyTCA): New function.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg 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'.
Werner Lemberg fae0c81f 2015-01-10T20:23:10 [truetype] More macro expansions. * src/truetype/ttinterp.c (EXEC_OP_, EXEC_OP): Remove by replacing with expansion.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg 0098d550 2014-12-07T11:03:57 Uppercase all hex digits for orthogonality.
Werner Lemberg ed6a9df0 2014-12-06T23:28:58 Whitespace.
Werner Lemberg 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'.
Werner Lemberg 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.
Werner Lemberg 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.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 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'.
Behdad Esfahbod 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.
Alexei Podtelezhnikov 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.
Werner Lemberg 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.
Werner Lemberg 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'.
Sean McBride 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.
Chongyu Zhu 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'.
Werner Lemberg 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.
Infinality 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.
Werner Lemberg 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.
Werner Lemberg 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.
Chongyu Zhu 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.
Werner Lemberg 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.
Werner Lemberg 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.
David Turner 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.
Werner Lemberg 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.
Werner Lemberg 99e60d84 2013-06-10T01:44:37 Fix Savannah bug #39160. * src/truetype/ttinterp.c (Ins_SDPVTL): Set projection vector too for the degenerate case.
Behdad Esfahbod 2d6e1fbc 2013-05-23T08:01:20 Compilation fix. * src/truetype/ttinterp.c (TT_RunIns) [!TT_CONFIG_OPTION_SUBPIXEL_HINTING]: Make it work.
Infinality 3c783c1b 2013-05-21T21:03:00 [truetype] Formatting and an additional subpixel tweak.
Infinality 18f35ed1 2013-05-21T20:51:15 [truetype] Adjust subpixel zp2 moves and tweak rules.
Infinality 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.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg e3c93015 2013-03-14T11:21:17 */*: Use FT_Err_Ok only. This is a purely mechanical conversion.
Werner Lemberg 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.
Werner Lemberg 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).
Werner Lemberg 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).
Werner Lemberg 6b9034f0 2013-01-28T13:56:23 Formatting, comment improvements.
Infinality c574d72c 2013-01-26T17:40:44 [truetype] Minor formatting fix.
Infinality a5fe3595 2013-01-26T12:29:52 [truetype] Align more to ClearType whitepaper for sph.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 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.
Infinality 94b79e74 2012-12-17T19:17:30 [truetype] Remove unusued code and variables.
Infinality 461cc936 2012-12-16T20:02:42 Merge branch 'master' of ssh://git.sv.nongnu.org/srv/git/freetype/freetype2 Conflicts: src/truetype/ttinterp.c
Infinality 71f242c2 2012-12-16T19:52:01 [truetype ] Remove unusued code. Add minor fixes.
Alexei Podtelezhnikov e2fa4a6c 2012-12-16T20:19:56 [truetype] Remove dead code.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 13e87e04 2012-12-09T19:48:22 Formatting.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 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.
Alexei Podtelezhnikov 6a126e14 2012-11-28T23:32:02 [truetype] Fix formatting and typo.
Alexei Podtelezhnikov 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.
Werner Lemberg 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.
Werner Lemberg 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.
Infinality ed6508c4 2012-06-26T17:20:27 [truetype] Remove unused rounding functionality.
Infinality 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.
Werner Lemberg f1ec0842 2012-03-11T13:48:25 s/maximal/maximum/ everywhere, s/minimal/minimum/ where appropriate.
Werner Lemberg 1054bc29 2012-03-10T09:30:27 [truetype] Improve comment.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg 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.
Werner Lemberg d74285d1 2012-02-29T13:59:49 [truetype] Improve comments.
Werner Lemberg 22fff253 2012-02-26T08:47:20 Whitespace.
Werner Lemberg 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.
suzuki toshiya 1749d8bc 2012-01-17T02:00:24 Remove trailing spaces.
Tobias Ringström 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.