kc3-lang/freetype/src
Branch :
Log
| Author | Commit | Date | CI | Message |
|---|---|---|---|---|
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0dd4eef6 | 2024-10-10 15:56:22 | Fix help message of apinames. * src/tools/apinames.c: The first header file must be given after the options. All arguments after the first header file are dealt as header files to be parsed, regardless with their leading "-". For example, "apinames include/freetype/freetype.h -dFREETYPE.DLL" warns "unable to open -dFREETYPE.DLL". Thus, the "header1" must be given after the arguments to be parsed as the options. | |
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83af801b | 2024-09-07 13:44:57 | * src/sfnt/ttsbit.c (tt_face_load_sbix_image): Respect metrics_only. Also fixes recursive flip. | |
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30080320 | 2024-09-06 13:43:47 | * src/sfnt/ttsbit.c (tt_face_load_sbix_image): Tweak loop. | |
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98283cb3 | 2024-09-06 17:03:58 | [sfnt] Support sbix graphicType 'flip'. * src/sfnt/ttsbit.c (tt_face_load_sbix_image): Currently undocumented by Apple, this flips the bitmap data horizontally. It is used on macOS in Apple Color Emoji; 19.4d6e1; 2024-02-05 (file `Apple Color Emoji.ttc`). Fixes issue #1282. | |
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d2612e1c | 2024-08-26 07:01:19 | * src/sfnt/ttcmap.c (tt_cmap*_get_info): Remove casting. | |
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f92c9655 | 2024-08-13 23:29:13 | Fix various typos. | |
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42608f77 | 2024-08-11 20:30:23 | * Version 2.13.3 released. ========================== Tag sources with `VER-2-13-3'. * docs/VERSION.TXT: Add entry for version 2.13.3. * docs/CHANGES: Updated. * docs/release, docs/README, builds/macs/README: Updated. * README, src/base/ftver.rc, builds/windows/vc2010/index.html, builds/windows/visualc/index.html, builds/windows/visualce/index.html, builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html, docs/freetype-config.1: s/2.13.2/2.13.3/, s/2132/2133/. * include/freetype/freetype.h (FREETYPE_PATCH): Set to 3. * builds/unix/configure.raw (version_info): Set to 26:2:20. * CMakeLists.txt (VERSION_PATCH): Set to 3. | |
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ed8b82ba | 2024-08-08 10:28:05 | Various minor documentation or formatting fixes. | |
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6b992aaa | 2024-08-11 19:44:13 | * src/*/*: Fix C++ compilation; fix clang warnings. | |
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1f72a120 | 2024-08-05 13:05:51 | * src/truetype/ttgxvar.c (ft_var_readpacked*): Minor. | |
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e181911d | 2024-08-05 13:02:04 | * src/base/ftstream.c (FT_Stream_ReadFields): Switch to `FT_Offset`. | |
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a48cddde | 2024-08-01 21:15:46 | * src/winfonts/winfnt.c (fnt_face_get_dll_font): Unwrap arithmetic. | |
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72e199e8 | 2024-08-01 21:12:41 | * src/base/ftstream.c (FT_Stream_ReadFields): Update condition. | |
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7c75b8a7 | 2024-08-01 19:14:44 | [truetype/GX] Use more robust conditions. * src/truetype/ttgxvar.c (ft_var_readpacked{points,deltas}): Rewrite conditions to avoid undefined behavior. | |
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5e116bb0 | 2024-07-30 21:51:51 | [truetype/GX] Read points and deltas more carefully. Hopefully fixes newly introduced buffer overflows: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=70807 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=70809 * src/truetype/ttgxvar.c (ft_var_readpacked{points,deltas}): Explicitly check stream frame limits and modify run counting. | |
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104f8544 | 2024-07-29 20:26:00 | [truetype/GX] Read stream more aggressively. With ample checks against the table size, we should be able to use macros without the limit checks and functional calls. * src/truetype/ttgxvar.c (ft_var_readpacked{points,deltas}): Use FT_NEXT_* instead of FT_GET_*. | |
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3f8edd23 | 2024-07-28 20:56:07 | * src/sfnt/ttload.c (tt_face_load_name): Shorten dereference. | |
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d42bffd4 | 2024-07-28 20:32:41 | * src/autofit/afmodule.c (af_autofitter_load_glyph): Shorten deref. | |
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24888540 | 2024-07-28 19:42:49 | [bdf,pcf,winfonts,sfnt] Remove barely used marcros. * include/freetype/internal/ftobjs.h (FT_FACE_SIZE, FT_SIZE_FACE): Removed. * src/bdf/bdfdrivr.c (BDF_Glyph_Load): Updated. * src/pcf/pcfdrivr.c (PCF_Glyph_Load): Ditto. * src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto * src/sfnt/ttbdf.c (tt_face_find_bdf_prop): Ditto. | |
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1452355d | 2024-07-18 09:31:19 | * src/truetype/ttobjs.c (tt_size_run_prep): Correct scaling of CVT values. This reverts the scaling behaviour introduced in commit 37580053. Fixes issue #1005. | |
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37cefe33 | 2024-06-13 12:01:54 | * psobjs.c (ps_table_add): Check length before calling `FT_MEM_CPY`. Fixes issue #1280. | |
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bab9564a | 2024-06-26 05:39:11 | Make 'multi' build work again. * src/psaux/psobjs.c: Include `psft.h`. * src/sfnt/rules.mk (SFNT_DRV_SRC): Add `ttgpos.c`. Fixes issue #1284. | |
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73720c7c | 2024-06-23 10:58:00 | * src/truetype/ttgload.c (load_truetype_glyph): Unsigned fix. | |
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044d142b | 2024-06-20 22:16:51 | Use unsigned tags `FT_Outline`. This change comes along with 2a7bb4596f56 ans is only meant to reduce pointer casting in the code. * include/freetype/ftimage.h (FT_Outline): Do it. * src/*: Update `FT_Outline` users. | |
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b1cbcb20 | 2024-06-20 15:00:20 | [ttgxvar] Avoid "applying zero offset to null pointer" In C it is undefined behavior to do arithmetic on a null pointer, including adding zero. When using NotoSansKhmer[wdth,wght].ttf UBSAN produces a report like ttgxvar.c:1052:31: runtime error: applying zero offset to null pointer when adding zero to `varData->deltaSet` (which is null) to produce `bytes`. Protect against all the potential issues of this kind by returning early if `varData->regionIdxCount == 0`. * src/truetype/ttgxvar.c (tt_var_get_item_delta): early return on no regions | |
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2a7bb459 | 2024-06-20 20:49:56 | Use unsigned point and contour indexing in `FT_Outline`. This doubles the number or allowed points, see https://github.com/harfbuzz/harfbuzz/issues/4752 Although it is hardly practical to use more than 32767 points, other font engines seem to support it. * docs/CHANGES: Announce it. * include/freetype/ftimage.h (FT_Outline): Do it and update limits. * src/*: Update `FT_Outline` users. | |
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2b9fdec5 | 2024-06-19 21:38:58 | * src/pfr/pfrgload.c (pfr_glyph_curve_to): Avoid casting. | |
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7a753c96 | 2024-06-18 21:14:58 | * src/base/ftgloadr.c (FT_GlyphLoader_Prepare): Minor refactoring. | |
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93a067e3 | 2024-06-18 17:48:41 | [base, autofit, psaux] Remove unnecessary casting. * src/autofit/afhints.c (af_glyph_hints_reload): Remove (short) casting. * src/base/ftgloadr.c (FT_GlyphLoader_Add): Ditto. * src/psaux/psobjs.c ({t1,cff,ps}_builder_{add,close}_contour): Ditto. | |
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d41a855a | 2024-05-29 17:01:29 | [ttgxvar] Replace tabs with spaces Also clarify comments around conversion and clamping. * src/truetype/ttgxvar.c (ft_var_to_normalized): doit | |
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7ff43d3e | 2024-05-26 19:40:20 | [truetype/GX] Consolidate memory allocations. * src/truetype/ttgxvar.c (tt_face_vary_cvt, TT_Vary_Apply_Glyph_Deltas): Allocate and split bigger memory blocks, avoid unnecessary zeroing, do not copy shared tuples, revise error exit paths. | |
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3416ac16 | 2024-05-26 08:10:21 | Whitespace. | |
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b6dbbd96 | 2024-05-24 17:38:14 | * src/truetype/ttgxvar.c (ft_var_apply_tuple): Reduce checks. | |
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70299c92 | 2024-05-23 22:50:32 | Revert "[truetype] Reduce allocation scope." This reverts commit 9ff4153cbfd60491f11bb56905ce6e20e94d23c7. | |
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9ff4153c | 2024-05-22 23:38:34 | [truetype] Reduce allocation scope. * src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Reduce scope of `points_org` and 'points_out`. | |
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5f131cfd | 2024-05-21 16:24:43 | [cff, truetype] Validate variation axes immediately. Instead of validating variation axes in every access, OpenType specs suggest that peak = 0 be used to tag invalid ranges. This implements just that once during loading. * src/cff/cffload.c (cff_blend_build_vector): Move the range checks... (cff_vstore_load): ... here. * src/truetype/ttgxvar.c (tt_var_get_item_delta): Ditto... (tt_var_load_item_variation_store): ... ditto. | |
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99be2b31 | 2024-05-21 18:26:09 | [cff, truetype] Rearrange variation range checks. This should achieve quicker results for common cases. * src/cff/cffload.c (cff_blend_build_vector): Rearrange conditionals. * src/truetype/ttgxvar.c (tt_var_get_item_delta): Ditto. | |
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347276c1 | 2024-05-21 13:12:45 | * src/truetype/ttgxvar.c (tt_var_get_item_delta): Align with specs. | |
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39f2fbf8 | 2024-05-20 22:47:14 | * src/truetype/ttgxvar.c (tt_var_get_item_delta): Minor refactoring. | |
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4ccdc9f9 | 2024-05-20 18:53:57 | [cff] Optimize the blend vector computations. * src/cff/cffload.c (cff_blend_build_vector): Use FT_MulDiv and skip multiplying by 1. | |
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b25265fe | 2024-05-19 22:58:23 | [bdf] Use concise macros. * src/bdf/bdflib.c (bdf_create_property): Use FT_STRDUP. (bdf_parse_glyphs_, bdf_parse_start_): Use FT_DUP for brevity. | |
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026fd5d4 | 2024-05-19 22:54:57 | [cache] Use FT_DUP to duplicate data. * src/cache/ftcsbits.c (ftc_sbit_copy_bitmap): Use concise FT_MEM_DUP. | |
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d7cf931a | 2024-05-19 22:48:13 | [truetype, type1] Use FT_DUP to duplicate data. * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Use concise FT_DUP. * src/truetype/ttgxvar.c (TT_Get_MM_Var): Ditto. * src/type1/t1load.c (parse_subrs): Ditto. | |
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b8db8197 | 2024-05-12 22:38:38 | [type1/MM] Safer handle arrays of different types. * src/type1/t1load.c (parse_blend_design_map): Separately allocate... (T1_Done_Blend): ... and free `design_points` and `blend_points`. | |
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5b1cde80 | 2024-05-11 23:27:34 | * src/type1/t1load.c (parse_blend_design_map): Add risky cast. | |
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b875924a | 2024-05-10 23:01:23 | * src/pshinter/pshrec.c (ps_hints_stem): Correct argument. | |
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5858fa16 | 2024-05-07 18:19:58 | [colr] Avoid overflow in range checks In 32 bit builds `FT_ULong` is 32 bits and can silently overflow when a large number is read into one and then it is summed or multiplied with another number. Checks for range overflow must be written so that they themselves do not overflow. Also ensure that the table_size is always the first part of the range check and consistently use `<` or `<=`. * src/sfnt/ttcolr.c (tt_face_load_colr): Avoid overflow. (find_base_glyph_v1_record): Remove old work-around. Bug: https://issues.chromium.org/issues/41495455 Bug: https://issues.chromium.org/issues/40945818 | |
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d0e3239f | 2024-05-06 13:39:06 | [sdf, bsdf] Use shared FT_SqrtFixed. FT_SqrtFixed (95b0fe2a6dff) is faster and does not overflow. * src/sdf/ftsdfcommin.h (square_root): Replace with a macro. * src/sdf/ftsdfcommin.c (square_root): Remove function. | |
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2edfd7e1 | 2024-05-04 16:42:47 | * src/autofit/aflatin.c (af_latin_metrics_scale_dim): Remove FT_ABS. See https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=68679 | |
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7bd887f1 | 2024-05-03 16:04:35 | * src/sfnt/sfwoff2.c (woff2_open_font): Fix copy-paste typo. | |
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3f28a6b6 | 2024-05-03 15:44:57 | [woff,woff2] Limit the number of tables and use FT_MSB. The upper limit of 4095 is implied by the SFNT header format where the multiplication by 16 would overflow without it. * src/sfnt/sfwoff.c (woff_open_font): Updated. * src/sfnt/sfwoff2.c (woff2_open_font): Ditto. | |
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13d1180f | 2024-05-02 13:16:46 | [woff2] Disallow zero table font entries The existing code already disallows zero table woff2 overall, but still allows for individual CollectionFontEntry to create font instances with zero tables. Such fonts are not useful so error early. This also fixes an MSAN discovered issue where if a CollectionFontEntry numTables is zero then the sfnt_header was not fully initialized. * src/sfnt/sfwoff2.c (woff2_open_font): error on zero tables, always initalize sfnt_header Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=68384 | |
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4d504684 | 2024-05-01 23:19:31 | [sfnt] Use faster macros in checksums. * src/truetype/ttobjs.c (tt_synth_sfnt_checksum): Use FT_NEXT_XXX. * src/sfnt/sfwoff2.c (compute_ULong_sum): Use macros. | |
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13da9042 | 2024-05-01 00:34:21 | * src/sfnt/sfwoff2.c (compute_ULong_sum): Clean up. | |
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5962d3c1 | 2024-04-29 22:34:09 | * src/cache/ftccache.c (FTC_Cache_RemoveFaceID): Remove nodes instantly. | |
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a209e1ad | 2024-04-29 17:54:30 | [cache] Remove unused `node_reset`. * src/cache/ftcmru.h (FTC_MruListClassRec): Remove `node_reset` field. * src/cache/ftcbasic.c (ftc_basic_{image,sbit}_family_class): Ditto. * src/cache/ftcmanag.c (ftc_face_list_class): Ditto. (ftc_size_node_reset): Remove function. * src/cache/ftcglyph.h: Fix comment. | |
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f8f0d1a1 | 2024-04-29 16:58:59 | * src/cache/ftcmru.c (FTC_MruList_New): Do not reset nodes. Resetting of the size nodes can crash, if a parent face purge happens simultaneously and destroys the node. It is safer to create a new node. Fixes #1270, reopened with a separate issue. | |
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1168b1b5 | 2024-04-27 20:44:01 | * src/cache/ftcimage.c (ftc_inode_weight): Formatting. | |
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982bc838 | 2024-04-21 15:53:05 | [cache] Minor tweaks. * src/cache/ftcimage.c (ftc_inode_free): Remove unnecessary check. * src/cache/ftcmanag.c (FTC_Manager_Done): Do not zero before freeing. | |
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5a3bfa92 | 2024-04-20 23:28:17 | * src/cache/ftcbasic.c: Cosmetic harmonization. | |
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23e1d645 | 2024-04-20 12:01:58 | [cache] Reduce type mismatches. * src/cache/ftcbasic.c (FTC_BasicAttrRec): Match type of `load_flags` to its main purpose in `FT_Load_Glyph`. (FTC_ImageCache_Lookup{,Scaler},FTC_SBitCache_Lookup{,Scaler}): Updated. | |
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9a2d6d97 | 2024-04-19 14:45:39 | * src/cache/{ftcbasic.c,ftccmap.c}: Use FTC_INLINE. | |
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dbdcd758 | 2024-04-19 14:02:43 | [cache] Tweak headers. * src/cache/ftccback.h: Include less and move `ftc_node_destroy`... * src/cache/ftccache.h: ... to here. * src/cache/ftcmanag.c: Include less. | |
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db83e9c0 | 2024-04-18 23:23:13 | * src/cache/ftcglyph.c [!FTC_INLINE]: Fix compilation. | |
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12adfc21 | 2024-04-17 15:07:23 | [cache] Improve MRU list management. * src/cache/ftcmru.c (FTC_MruList_Remove): Cosmetic. (FTC_MruList_New): Accept only valid changes. * src/cache/ftcmanag.c (ftc_size_node_done): Simplify. | |
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d091bca5 | 2024-04-17 00:33:14 | [cache] Fix error handling. Manipulate the cache after a face is requested or a size is looked up successfully. Fixes #1270. * src/cache/ftcmanag.c (ftc_size_node_init, ftc_size_node_reset, ftc_face_node_init): Check for errors before accepting a change. * src/cache/ftcmru.c (FTC_MruList_New): Do nothing if reset fails. | |
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b3a6a20a | 2024-04-14 15:37:57 | [smooth] Switch to vertical bisections. With horizontal bisections, the smallest section is a whole single scanline. Almost horizontal lines or other complex scanlines can easily overflow the rendering pool. Switching to vertical bisections splits the scanlines and should rule out the overflows. Fixes #1269. * src/smooth/ftgrays.c (gray_convert_glyph): Bisect vertically. | |
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fff58f54 | 2024-04-14 15:12:31 | * src/smooth/ftgrays.c (gray_convert_glyph): Refactor for convenience. | |
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674d629b | 2024-04-14 13:06:01 | [smooth] Store persistent clipping box. * src/smooth/ftgrays.c (gray_TWorker, gray_raster_render): Add and set the new structure field. (gray_convert_glyph): Use it. | |
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f42ce255 | 2024-03-08 14:55:12 | [colr] Ensure enough bytes for PaintColrLayers * src/sfnt/ttcolr.c (read_paint): check that there are five additional bytes to be read when reading PaintColrLayers. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66566 | |
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17545d4b | 2024-03-01 11:16:48 | Avoid n^2 scanning for binary data. When creating a CID parser the location of the 'StartData' or '/sfnts' tokens needs to be known. However, the token parser requires that the entire document be in memory and flattening the entire stream into memory is to be avoided. To avoid forcing the entire stream into memory, previously this code would scan through the stream looking for 'StartData' or '/sfnts' as strings. However, these strings could have been in a comment or string token, so the stream would be read into memory up to that point and the parser run to check that these strings were actually tokens. This forced a parser restart from the beginning each time; as a result, data with many 'StartData' non-tokens would take n^2 time to check. * src/cid/cidparse.c (cid_parser_new): Change algorithm to make the initial scan look for the last possible 'StartData' or '/sfnts' string in the stream. The stream is read forward instead of backward as a typical normal CID font will have one 'StartData' toward the beginning of the data and it it much faster to read the data from beginning to end instead of end to beginning. For memory-based fonts the limit is set to the end of the stream since the stream is already in memory. Then the parser is run once to look for 'StartData' or '/sfnts' tokens. If they are found the parser is re-set to reflect this new information. Reported as https://issues.chromium.org/issues/40201695 | |
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2a790a9f | 2024-02-28 17:45:19 | [cff, truetype] Always set up default variable instance. For default variable instances `cff_face_init` did not set the blend. This mostly worked as later use of the unset blend produced the default variation. However, if a user called `TT_Get_MM_Var` the blend would be partially set up, but not fully. In particular the number of axes, the axis definitions, and the instance locations would be set up, but not the current instance location (`coords` and `normalizedcoords`). This could lead to the default instances of CFF2 fonts erroring on any use of `blend`. Ensure the default variable instance is fully set up by always calling `FT_Set_Named_Instance` on a variable face. * src/cff/cffobjs.c (cff_face_init): Call `FT_Set_Named_Instance` on default instances. * src/truetype/ttobjs.c (tt_face_init): Ditto. Fixes #1268. | |
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546237e1 | 2024-02-23 11:55:53 | * src/truetype/ttgxvar.c (ft_var_to_normalized): Integer overflow. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66543 | |
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47574f7e | 2024-01-27 11:11:22 | Update all copyright notices. | |
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4f0256c1 | 2024-01-27 10:47:10 | * src/sfnt/ttgpos.c (tt_gpos_get_glyph_class): Fix warning C4018. | |
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8f286c86 | 2024-01-19 16:42:48 | Add support for kerning from 'GPOS' tables. This commit adds support for kerning from 'GPOS' tables, while maintaining support for basic 'kern' tables. `FT_HAS_KERNING` will be true for a font with either available and `FT_Get_Kerning` will still use the basic 'kern' table data if avilable, otherwise check the GPOS 'kern' feature. This feature is disabled by default; it can be enabled with the `TT_CONFIG_OPTION_GPOS_KERNING` flag. Only basic kerning (pair positioning with just an x advance) is supported from the GPOS layout features; support for that was added to make the existing `FT_Get_Kerning` API more consistently functional. FreeType does not intend to extend itself to further GPOS functionality though; a higher-level library like HarfBuzz can be used instead for that. * include/freetype/config/ftoption.h, include/devel/ftoption.h (TT_CONFIG_OPTION_GPOS_KERNING): New configuration option. * include/freetype/internal/fttrace.h: Add `ttgpos` trace handler. * include/freetype/internal/sfnt.h (SFNT_Interface): Add `load_gpos` and `get_gpos_kerning` fields. (FT_DEFINE_SFNT_INTERFACE): Updated. * include/freetype/internal/tttypes.h: Include `fttypes.h`. (TT_FaceRec) [TT_CONFIG_OPTION_GPOS_KERNING]: Add `gpos_table` and `gpos_kerning_available` fields. * src/sfnt/ttgpos.c, src/sfnt/ttgpos.h: New files. * src/sfnt/sfdriver.c [TT_CONFIG_OPTION_GPOS_KERNING]: Include `ttgpos.h`. (sfnt_interface): Updated. * src/sfnt/sfnt.c: Include `ttgpos.c`. * src/sfnt/sfobjs.c [TT_CONFIG_OPTION_GPOS_KERNING]: Include `ttgpos.h`. (sfnt_load_face) [TT_CONFIG_OPTION_GPOS_KERNING]: Load and free GPOS kerning data; check GPOS kerning availability. * src/truetype/ttdriver.c (tt_get_kerning): Use GPOS kerning if there's no 'kern' table. | |
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57617782 | 2024-01-14 13:03:51 | [smooth] Remove SSE2. As a result of 7b308a29dd10, the regular 64-bit execution is now faster than SSE2. The rendering speed of script fonts at 64 ppem or larger is improved by about 3% without SSE2. See !314 for the testing results. * src/smooth/ftgrays.c (gray_render_conic)[FT_INT64]: Remove SSE2 code. | |
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7bac4d14 | 2024-01-08 20:25:31 | * src/sfnt/ttcolr.c (find_base_glyph_v1_record): Fix build in C90 mode. | |
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cc081d7c | 2024-01-06 19:22:36 | [base] Fix up Mac resource forks and dfonts. * src/base/ftobjs.c (IsMacResource): Assign `face_index`. * src/base/ftmac.c (FT_New_Face_From_Suitcase): Ditto after rework. | |
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4a85ff0b | 2024-01-04 21:38:51 | [sfnt] Restrict POST version 1.0. A font has surfaced with `post` version 1.0 and fewer than 258 glyphs. Its glyphs did not correspond to their names. We now reject such `post` strictly following specifications. * src/sfnt/ttpost.c (tt_face_get_ps_name): Check the number of glyphs for version 1.0. | |
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57c4252a | 2024-01-02 17:55:33 | [sfnt] Guard access in 'COLR' v1 glyph binary search. Reported as https://bugs.chromium.org/p/chromium/issues/detail?id=1505216 * src/sfnt/ttcolr.c (find_base_glyph_v1_record): Guard access of the search pointer during binary search. The pointer needs to be checked as we go as the test that compares number of v1 glyphs with table size at the time of loading the table is not sufficient on its own. A scenario is possible in which the `BaseGlyphRecord` list extends into non-`BaseGlyphRecord` parts of the 'COLR' v1 table (but passed the size comparison check). Then, at those locations, invalid glyph ID values are read and may provoke an invalid read due to reassigning min and max values during the binary search. | |
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8eab5110 | 2023-12-14 06:59:05 | [CFF] Extract `BlueValues` as `Fixed` rather than `Int`. This is a follow-up to commit 26a7f047, [cff] Make blend operator work with floats in private dicts. which addressed the 'party baseline' bug. However, the reporting user indicated that the default location and some other points in design space rendered OK, but other points in design space still had problems. The most obvious issue being that the x-heights of lower-case letters did not align; see https://github.com/adobe-fonts/source-serif/issues/121#issuecomment-1773794136 After some analysis we determined that this was due to an interaction between `BlueValue` rounding and the zone-based algorithm. In short, for a point to be considered in a zone it must fall within the bounds of the zone. (There is a slop factor in some cases, but only a very small one.) In the Adobe-contributed side of the code, point values are not integer-rounded, instead they're kept as (some form of) fixed. Rounding just the `BlueValues` means that points that need to be considered within a zone will fall outside of it at some points in design space. The majority of this patch changes the storage and parsing of `BlueValues` to keep them as `FT_Fixed`. No significant code changes were needed because the values are converted to `Fixed` anyway when stored in `CF_BlueRec`. No attempt was made to address problems in the older pshinter code beyond converting the values from `FT_Fixed` to `FT_Short` when copying the private dictionary. (However, as the point values are also rounded in that code, the problem is much less likely to occur, although inconsistency between rounding and truncation could cause an analogous problem.) * include/freetype/internal/cfftypes.h (CFF_PrivateRec): Use `FT_Fixed` for `blue_values`, `other_blues`, `family_blues`, and `family_other_blues`. * src/cff/cffload.c (cff_blend_doBlend): Updated. * src/cff/cffobjs.c (CFF_fixedToInt): New macro. (cff_make_private_dict): Use it. * src/cff/cffparse.h (cff_kind_delta_fixed): New enum value. * src/cff/cffparse.c (do_fixed): Updated. (CFF_FIELD_DELTA, CFF_FIELD_DELTA_FIXED, CFF_DELTA_KIND): New set of macros, replacing `CFF_FIELD_DELTA`. (cff_parser_run): Updated to handle fixed-float deltas. * src/cff/cfftoken.h: Updated to use `CFF_FIELD_DELTA_FIXED` for blue values. * src/psaux/psblues.c (cf2_blueToFixed): Removed, no longer needed. (cf2_blues_init): Updated. * src/pxaux/psft.c, src/pxaux/psft.h (cf2_getBlueValues, cf2_getOtherBlues, cf2_getFamilyBlues, cf2_getFamilyOtherBlues): Updated signatures. * src/psaux/psobjs.c (t1_make_subfont): Updated. | |
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6f2bf6a5 | 2023-12-14 06:55:33 | [psaux] Improve tracing. * src/psaux/psintrp.c (cf2_doBlend, cf2_interpT2CharString [cf2_cmdBLEND]): Show blended values. | |
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9bf72966 | 2023-12-14 06:11:43 | * src/truetype/ttgxvar.c (ft_var_to_normalized): Fix undefined left-shift. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63723 | |
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01f23c39 | 2023-12-01 23:13:28 | * src/raster/ftraster.c (Draw_Sweep): Swap stub conditions. | |
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5999d47d | 2023-12-01 20:50:16 | * src/raster/ftmisc.h (FT_MulDiv): Remove unused copy. | |
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8f255c89 | 2023-11-27 22:44:36 | [raster] Speed up Bézier arches with extrema. While it is recommended to have an explicit point at each curve extrema, they might be missing or outline could be rotated. This leads to excessive bisections in raster to find them. This change helps to decrease the number of bisections. The scanline intersections remain monotonous, of course. * src/raster/ftraster.c (Conic_To, Cubic_To): Check that control points cross the scanlines to bisect. | |
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efbae547 | 2023-11-24 10:23:36 | [raster] Eliminate intensive flow checking. * src/raster/ftraster.c (Draw_Sweep): Pass the flow increment. (Increment): Accept the flow increment. | |
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63d3a37e | 2023-11-23 17:50:04 | * src/raster/ftraster.c: Comments, defines, includes, cleanups. | |
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df39b017 | 2023-11-21 18:12:45 | * src/raster/ftraster.c (FT_Outline_Get_CBox ) [STANDALONE_]: Removed. | |
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c62027d9 | 2023-11-21 16:54:25 | * src/raster/ftraster.c (Draw_Sweep): No-fault return. (Render_Single_Pass): Updated. | |
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d77dd24b | 2023-11-21 15:16:56 | [raster] Sweep polishing. * src/raster/ftraster.c (*_Sweep_Span): Polish. (*_Sweep_Drop): Restore tracing, polish. (Draw_Sweep): Simplify the dropout processing loop. | |
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da8e4289 | 2023-11-21 00:53:50 | [raster] Rearrange dropout control. This reduces the code duplication. * src/raster/ftraster.c (Function_Sweep_Span): Change signature. (Vertical_Sweep_Drop, Horizontal_Sweep_Drop): Focus on pixel setting and move duplicated the dropout control logic to... (Draw_Sweep): ... this function and refactor. (Vertical_Sweep_Span, Horizontal_Sweep_Span): Minor. | |
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d7c72ff9 | 2023-11-20 22:46:36 | [raster] Use bitwise dropout mode interpretation. * src/raster/ftraster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop, Draw_Sweep, Render_GLyph): Interpret dropout mode using bit masks. | |
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050a3207 | 2023-11-15 23:41:56 | [raster] Keep only bottom y-turns. This results in noticeable performance improvement. * src/raster/ftraster.c (Insert_Y_Turns): All bottom y-turns are still sorted and stored; only the maximum top y-turn is recorded now. The function is renamed. (End_Profile): Updated accordingly. (Convert_Glyph): Reserve space for the top value. | |
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fa59e0d6 | 2023-11-15 16:55:57 | * src/raster/ftraster.c (End_Profile): Reduce branching. (InsNew): Tweak condition. | |
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c580926f | 2023-11-15 15:17:50 | * src/raster/ftraster.c (Draw_Sweep): Use more natural loop. | |
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b0265ccd | 2023-11-14 23:32:06 | [raster] Dissolve a loop. * src/raster/ftraster.c (End_Profile): Set initial `X` here... (Draw_Sweep): ... instead of here; delay the `start` decrement. | |
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6dc2ecb7 | 2023-11-14 23:06:41 | * src/raster/ftraster.c: Comments. | |
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aec7e717 | 2023-11-14 16:47:34 | [raster] Stylistic changes. * src/raster/ftraster.c (Line_To): Code it similar to curves; shortcut the flat lines here... (Line_Up): ... instead of here. |