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65f85237
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2023-01-17T09:18:25
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Update all copyright notices.
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7b3ebb9c
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2022-04-30T22:43:33
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[sdf] Do not throw errors for invisible glyphs.
* src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Return `FT_Err_Ok` if
width or height is zero, since some glyphs do not generate visible bitmaps.
Fixes #1150.
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d0cfb4e1
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2022-01-11T10:54:10
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Update all copyright notices.
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ebcc96e5
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2021-08-02T08:40:43
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Fix invalid memory access in `bsdf` rasterizer.
Do not generate SDF from bitmap if the `FT_GLYPH_OWN_BITMAP` flag is not
set. In some cases the bitmap buffer is freed but still points to a valid
address; to handle those cases check the flag before accessing the memory.
* src/sdf/ftsdfrend.c (ft_bsdf_render): Handle the above case.
Also, return an error message if the bitmap's rows/pitch is invalid,
otherwise `slot->buffer` might be assigned to some invalid memory location.
(ft_sdf_render): Same as above.
Plus, move the outline back to original state after rasterization and not if
any error occurs.
Signed-off-by: Anuj Verma <anujv@iitbhilai.ac.in>
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90ecac41
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2021-06-30T10:23:42
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Update `CHANGES` file; other minor doc fixes.
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61bac759
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2021-06-18T17:38:00
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* src/sdf/ftsdfrend.c (ft_(b)sdf_render): Do not FT_ERROR routinely.
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7833e308
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2021-06-09T10:40:30
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[sdf] Fix SDF positioning.
* src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Add padding to
`bitmap_top' and `bitmap_left'.
* sdf/sdf/ftsdf.c (sdf_generate_with_overlaps): Fix VC++ warning.
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2b1d5562
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2021-06-08T08:29:34
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[sdf] Use 8 bits for final SDF output instead of 16bits.
Since 8-bits is enough to represent SDF data we no longer require
16-bits for this purpose. Also, we now normalize the output data
to use the entire 8-bit range efficiently. For example: if we use
3.5 format with a spread of 1 we basically only use the starting
5-bits. By normalizing we can use the entire 8-bit range.
* include/freetype/freetype.h (FT_Render_Mode): Updated description
for `FT_RENDER_MODE_SDF` regarding this change.
* include/freetype/ftimage.h (FT_Pixel_Mode): Removed
`FT_PIXEL_MODE_GRAY16` since no longer required.
* include/freetype/fttypes.h (FT_F6Dot10): Removed since no longer
required.
* src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Allocate 8-bit
bitmap instead of 16-bit buffer.
* src/sdf/ftsdfcommon.h (map_fixed_to_sdf): Added function to convert
16.16 distance value to our desired format.
* src/sdf/ftsdf.c (sdf_generate_with_overlaps,
sdf_generate_bounding_box): Use the new `map_fixed_to_sdf` function
and also use 8-bit output buffer.
* src/sdf/ftbsdf.c (finalize_sdf): Output to a 8-bit buffer instead
of 16-bit buffer.
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a50c39aa
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2021-05-29T09:50:29
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Fix compilation errors and (some) warnings for clang++.
* src/autofit/afmodule.c (AF_GlyphHintsRec): Make it static.
* src/cache/ftcache.c (FTC_Cache_NewNode), src/cache/ftcsbits.c
(ftc_snode_compare): Remove semicolon.
* src/cff/cffparse.c (cff_parser_run): Add `break` statement.
* src/cid/cidload.c (cid_hex_to_binary): Add cast.
* src/sdf/ftbsdf.c (CHECK_NEIGHBOR): Use `do {} while(0)` loop.
(bsdf_init_distance_map, finalize_sdf, bsdf_raster_render): Add
casts.
* src/sdf/ftsdf.c (sdf_generate_bounding_box,
sdf_generate_with_overlaps): Ditto.
* src/sdf/ftsdfcommon.h (square_root): Ditto.
* src/sdf/ftsdfrend.c (sdf_property_get, ft_sdf_render,
ft_bsdf_render): Ditto.
* src/sfnt/ttcolr.c (find_base_glyph_record,
find_base_glyph_v1_record): Fix variable signedness.
(read_color_line): Add cast.
(read_paint): Add casts.
Fix signedness issue.
(tt_face_get_colorline_stops) Fix signedness issues.
* src/sfnt/ttpost.c (load_format_20): Add casts.
* src/truetype/ttsubpix.c (TWEAK_RULES, TWEAK_RULES_EXCEPTIONS):
Remove final semicolons.
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2149b51f
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2021-03-13T19:08:09
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Handle various VC++ compiler warnings.
Fixes #1039.
* src/base/ftstroke.c (ft_stroker_inside, ft_stroker_outside):
Initialize `sigma`.
* src/sdf/ftsdf.c (sdf_generate_with_overlaps): Exit immediately if
function arguments are invalid.
* src/sdf/ftsdfrend.c (sdf_property_set) <"overlaps">: Fix cast.
* src/sfnt/sfwoff2.c (woff2_decompress)
[!FT_CONFIG_OPTION_USE_BROTLI]: Use `FT_UNUSED`.
* src/truetype/ttgxvar.c (TT_Get_MM_Var): Initialize `fvar_head`.
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b6e8a712
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2021-01-17T07:18:48
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Update all copyright notices.
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04a64432
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2020-12-24T08:29:05
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[sdf] Add copyright notices.
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6cd6df55
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2020-08-20T21:57:43
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[sdf] Add 'bsdf' renderer to 'sdf' module.
* src/sdf/ftsdfrend.c (ft_bsdf_render): New function.
(ft_bitmap_sdf_renderer_class): New structure.
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56d27d32
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2020-08-17T11:47:26
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[sdf] Add 'sdf' renderer.
* src/sdf/ftsdf.c: Add 'sdf' renderer along with its interface
functions.
Also add functions to set and get properties.
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cd6ff28a
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2020-08-16T17:09:22
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[sdf] Add files for new 'sdf' module.
Here is a breakdown of what the files will contain.
* src/sdf/ftsdfrend.c, src/sdf/ftsdfrend.h: The 'sdf' and 'bsdf'
renderers.
* src/sdf/ftsdf.c, src/sdf/ftsdf.h: The rasterizer for the 'sdf'
renderer.
* src/sdf/ftbsdf.c, src/sdf/ftbsdf.h: The rasterizer for the 'bsdf'
renderer.
* src/sdf/ftsdfcommon.h: Commmon properties and functions for both
rasterizers.
* src/sdf/ftsdferrs.h: Common error defines.
* src/sdf/sdf.c: For building a single object of the entire module.
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