|
0a0c2256
|
2018-01-02T09:33:57
|
|
Update copyright year.
|
|
|
d21f995a
|
2017-12-07T14:49:03
|
|
Fix C++ compilation.
* src/psaux/psauxmod.h: Use FT_CALLBACK_TABLE macro where necessary.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Fix warning.
|
|
|
71fecc53
|
2017-12-05T12:06:29
|
|
Improve tracing messages by using singular and plural forms.
* src/*/*.c: Implement it.
|
|
|
87ddad20
|
2017-12-04T20:43:30
|
|
Update or fix links to use the https protocol instead of http.
|
|
ab6fe076
|
2017-11-06T21:34:56
|
|
* src/smooth/ftgrays.c (gray_set_cell): Fix uninitialized variables.
|
|
|
81651636
|
2017-11-01T22:51:03
|
|
[smooth] Fix complex rendering at high ppem.
We used to split large glyphs into horizontal bands and continue
bisecting them still horizontally if that was not enough. This is
guaranteed to fail when a single scanline cannot fit into the
rendering memory pool. Now we bisect the bands vertically so that
the smallest unit is a column of the band height, which is guranteed
to fit into memory.
* src/smooth/ftgrays.c (gray_convert_glyph): Implement it.
|
|
|
91015cb4
|
2017-10-21T22:57:43
|
|
[smooth] Improve complex rendering at high ppem.
At large sizes almost but not exactly horizontal segments can quickly
drain the rendering pool. This patch at least avoids filling the pool
with trivial cells. Beyond this, we can only increase the pool size.
Reported, analyzed, and tested by Colin Fahey.
* src/smooth/ftgrays.c (gray_set_cell): Do not record trivial cells.
|
|
|
6bea49e0
|
2017-10-14T22:45:11
|
|
[base] Netpbm image tracing.
* src/base/ftobjs.c (FT_Load_Glyph): Trace bitmap size.
(FT_Render_Glyph_Internal): Trace bitmap in Netpbm format.
* src/smooth/ftgrays.c (gray_sweep): Sweep remnants of span tracing.
|
|
|
2e58808d
|
2017-10-05T14:26:33
|
|
Fix compiler warnings.
* src/cff/cffdrivr.c (cff_ps_get_font_extra): Avoid code that relies
on numeric overflow.
Add cast.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Fix variable
types, add cast.
|
|
|
af03d1ea
|
2017-10-01T09:23:42
|
|
[smooth,type1] Formatting, whitespace.
|
|
|
c8d8e158
|
2017-09-30T14:28:58
|
|
Signedness fixes in bitmap presetting.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3514.
* src/raster/ftrend1.c (ft_raster1_render): Exlicitly signed height.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Ditto.
* src/base/ftobjs.c (ft_glyphslot_preset_bitmap): Explicitly unsigned
subtraction.
|
|
|
ae7dc1f6
|
2017-09-28T22:59:31
|
|
[smooth, raster] Miscellaneous cleanups.
* src/raster/ftrend1.c (ft_raster1_render): Clean up the exit.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Reduce
translations and clean up the exit.
(ft_smooth_render_lcd, ft_smooth_render_lcd): Remove unused `error'..
|
|
|
61d1818b
|
2017-09-28T00:20:50
|
|
Bitmap metrics presetting [1/2].
This mainly just extracts the code for presetting the bitmap metrics
from the monochrome, grayscale, and LCD renderers into a separate
function.
* src/base/ftobjs.c (ft_glyphslot_preset_bitmap): New function that
calculates prespective bitmap metrics for the given rendering mode.
* include/freetype/internal/ftobjs.h (ft_glyphslot_preset_bitmap):
Declare it.
* src/base/ftlcdfil.c (ft_lcd_padding): New helper function that adds
padding to CBox taking into account pecularities of LCD rendering.
* include/freetype/ftlcdfil.h (ft_lcd_padding): Declare it.
* src/raster/ftrend1.c (ft_raster1_render): Reworked to use
`ft_glyphslot_preset_bitmap'.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Ditto.
(ft_smooth_render_lcd, ft_smooth_render_lcd): The pixel_mode setting
is moved to `ft_glyphslot_preset_bitmap'.
|
|
|
02e80da6
|
2017-09-24T22:18:34
|
|
Tweak per-face LCD filtering controls.
Thing are simpler with a NULL-function pointer.
* include/freetype/internal/ftobjs.h (FT_Face_InternalRec): New
pointer to the filter function.
(FT_LibraryRec): Remove unused `lcd_filter'.
(FT_Bitmap_LcdFilterFunc, ft_lcd_filter_fir): Move from here...
* include/freetype/ftlcdfil.h (FT_Bitmap_LcdFilterFunc,
ft_lcd_filter_fir): ... to here.
* src/base/ftobjs.c (ft_open_face_internal): NULL-initialize the
per-face filter.
(FT_Face_Properties): Set it.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Simplify.
* src/base/ftlcdfil.c (ft_lcd_filter_fir, FT_Libary_SetLcdFilter):
Minor.
|
|
|
39ce3ac4
|
2017-09-16T19:08:17
|
|
* Version 2.8.1 released.
=========================
Tag sources with `VER-2-8-1'.
* docs/VERSION.TXT: Add entry for version 2.8.1.
* docs/CHANGES: Updated.
* 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/2.8/2.8.1/, s/28/281/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.
* builds/unix/configure.raw (version_info): Set to 21:0:15.
* CMakeLists.txt (VERSION_PATCH): Set to 1.
|
|
|
410f3799
|
2017-03-09T00:08:38
|
|
[smooth] Harmony LCD rendering.
This is a new technology for LCD-optimized rendering. It capitalizes
on the fact that each color channel grid is shifted by a third of a
pixel. Therefore it is logical to render 3 separate monochrome
bitmaps shifting the outline by 1/3 pixel, and then combine them.
Importantly, the resulting output does not require additional LCD
filtering.
* src/smooth/ftsmooth.c (ft_smooth_render_generic)
[!FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Implement new LCD-optimized
rendering.
* include/freetype/ftlcdfil.h, include/freetype/freetype.h,
include/freetype/config/ftoption.h, devel/ftoption.h: Updated
documentation.
|
|
|
5710ef98
|
2017-08-08T22:00:35
|
|
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Clean up.
|
|
|
7b727833
|
2017-06-17T23:28:14
|
|
[base, smooth] LCD filtering cleanups.
* src/base/ftlcdlil.c (ft_lcd_filter_fir, _ft_lcd_filter_legacy):
Clean up, start filtering from the bottom-left origin.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Updated.
|
|
|
dcd8de27
|
2017-06-09T11:21:58
|
|
*/*: Remove `OVERFLOW_' prefix.
This increases readability.
|
|
|
cd02d359
|
2017-06-01T17:05:39
|
|
[smooth] Some 32bit integer overflow run-time errors.
* src/smooth/ftgrays.c [STANDALONE] (OVERFLOW_ADD_LONG,
OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG, NEG_LONG): New macros.
[!STANDALONE]: Include FT_INTERNAL_CALC_H.
(gray_render_cubic): Use those macros where appropriate.
|
|
|
ab2599ea
|
2017-05-20T00:35:21
|
|
[smooth] Implement minimal dynamic padding for LCD filtering.
Extra bitmap padding for LCD filtering depends on the filter. The
default 5-tap filter needs 2 extra subpixels. The light 3-tap filter
needs only 1 extra subpixel. This space could be already available
due to rounding. In order to optimize the padding, we now expand
CBox for the given filter weights before rounding.
This change breakes current Skia (and Firefox).
* include/freetype/internal/ftobjs.h (FT_LibraryRec)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Remove `lcd_extra' field.
* src/base/ftlcdfil.c (FT_Library_SetLcdFilterWeights,
FT_Library_SetLcdFilter): Remove `lcd_extra' initializations.
* src/smooth/ftsmooth.c (ft_smooth_render_generic): Implement dymanic
LCD padding.
|
|
|
e99b26aa
|
2017-05-14T21:57:27
|
|
Remove remnants of raster pool.
* include/freetype/internal/ftobjs.h (FT_LibraryRec): Remove
`raster_pool' and `raster_pool_size' fields.
* src/base/ftobjs.c (FT_New_Library), src/raster/ftrend1.c
(ft_raster1_init), src/smooth/ftsmooth.c (ft_smooth_init): Updated.
|
|
|
ba40054c
|
2017-05-02T12:32:19
|
|
[autofit] Remove `slight' auto-hint mode again.
A poll on freetype-devel favoured changes directly applied to
`light'.
* include/freetype/freetype.h (FT_LOAD_TARGET_SLIGHT,
FT_RENDER_MODE_SLIGHT): Removed.
* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2.c
(af_latin2_hints_init): Revert change from 2017-04-22.
* src/autofit/afloader.c (af_loader_load_glyph) Remove references to
FT_RENDER_MODE_SLIGHT.
[AF_CONFIG_OPTION_TT_SIZE_METRICS]: Enable TrueType-like metrics
unconditionally.
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Revert change from
2017-04-22.
* src/base/ftobjs.c (FT_Load_Glyph): Revert change from 2017-04-22.
* src/pshinter/pshalgo.c (ps_hints_apply): Revert change from
2017-04-22.
* src/smooth/ftsmooth.c (ft_smooth_render): Revert change from
2017-04-22.
* docs/CHANGES: Updated.
|
|
|
5aa6716a
|
2017-04-22T13:27:21
|
|
Add new `slight' auto-hinting mode.
This mode uses fractional advance widths and doesn't scale glyphs
horizontally, only applying vertical scaling and hinting.
At the same time, the behaviour of the `light' auto-hinter gets
restored for backwards compatibility: Both vertical and horizontal
scaling is again based on rounded metrics values (this was changed
in a commit from 2017-03-30 as a side effect). To be more precise,
the behaviour is restored for TrueType fonts only; for other font
formats like Type 1, this is a new feature of the `light' hinting
mode.
* include/freetype/freetype.h (FT_LOAD_TARGET_SLIGHT): New macro.
(FT_RENDER_MODE_SLIGHT): New render mode.
* include/freetype/internal/ftobjs.h (FT_Size_InternalRec): Add
`autohint_mode' and `autohint_metrics' fields.
* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2 (af_latin2_hints_init):
Updated.
* src/autofit/afloader.c (af_loader_embolden_glyph_in_slot): Use
`autohint_metrics'.
(af_loader_load_glyph): s/internal/slot_internal/.
Initialize `autohint_metrics' and `autohint_mode' depending on
current auto-hint mode.
Use `autohint_metrics'.
Updated.
* src/base/ftadvanc.c (LOAD_ADVANCE_FAST_CHECK): Updated.
* src/base/ftobjs.c (FT_Load_Glyph): Updated.
(FT_New_Size): Allocate `internal' object.
* src/pshinter/pshalgo.c (ps_hints_apply): Updated.
* src/smooth/ftsmooth.c (ft_smooth_render): Updated.
|
|
|
eb5e0fb7
|
2017-04-21T22:53:39
|
|
* src/smooth/ftsmooth.h: Remove unused guards and declaration.
|
|
|
71d289da
|
2017-04-19T23:50:29
|
|
Typos.
|
|
|
9931175d
|
2017-03-18T07:06:49
|
|
Improve `make multi'.
* src/autofit/aflatin2.c: Guard file with FT_OPTION_AUTOFIT2.
* src/base/ftmac.c: Guard more parts of the file with FT_MACINTOSH.
* src/psaux/afmparse.c: Guard file with T1_CONFIG_OPTION_NO_AFM.
* src/sfnt/pngshim.c: Guard file with
TT_CONFIG_OPTION_EMBEDDED_BITMAPS also.
* src/sfnt/ttbdf.c: Avoid empty source file.
* src/sfnt/ttpost.c: Guard file with
TT_CONFIG_OPTION_POSTSCRIPT_NAMES.
* src/sfnt/ttsbit.c: Guard file with
TT_CONFIG_OPTION_EMBEDDED_BITMAPS.
* src/truetype/ttgxvar.c, src/truetype/ttinterp.c: Avoid empty
source file.
* src/truetype/ttsubpix.c: Guard file with
TT_USE_BYTECODE_INTERPRETER also.
* src/type1/t1afm.c: Guard file with T1_CONFIG_OPTION_NO_AFM.
* src/autofit/autofit.c, src/base/ftbase.c, src/cache/ftcache.c,
src/cff/cff.c, src/cid/type1cid.c, src/gxvalid/gxvalid.c,
src/pcf/pcf.c, src/pfr/pfr.c, src/psaux/psaux.c,
src/pshinter/pshinter.c, src/psnames/psnames.c, src/raster/raster.c,
src/sfnt/sfnt.c, src/smooth/smooth.c, src/truetype/truetype.c,
src/type1/type1.c, src/type42/type42.c: Remove conditionals; sort
entries.
|
|
|
761d9e41
|
2017-02-22T22:41:36
|
|
* src/smooth/ftgrays.c (gray_hline): Improve code.
|
|
2e951988
|
2017-02-16T20:45:45
|
|
Add face property for LCD filter weights.
* include/freetype/ftlcdfil.h (FT_PARAM_TAG_LCD_FILTER_WEIGHTS,
FT_LCD_FILTER_FIVE_TAPS): New macros.
(FT_LcdFiveTapFilter): New typedef.
* include/freetype/ftobjs.h (FT_Face_InternalRec)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Add `lcd_weights' field.
(FT_Bitmap_LcdFilterFunc): Change third argument to weights array.
(ft_lcd_filter_fir): New prototype.
(FT_LibraryRec): Updated.
* src/base/ftlcdfil.c (_ft_lcd_filter_fir): Renamed to...
(ft_lcd_filter_dir): ... this base function.
Updated.
(_ft_lcd_filter_legacy): Updated.
(FT_Library_SetLcdFilterWeights, FT_Library_SetLcdFilter): Updated.
* src/base/ftobjs.c (ft_open_face_internal): Updated.
(FT_Face_Properties): Handle FT_PARAM_TAG_LCD_FILTER_WEIGHTS.
* src/smooth/ftsmooth.c (ft_smooth_render_generic)
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING: Handle LCD weights from
`FT_Face_Internal'.
|
|
|
fcd47b3d
|
2017-02-12T23:07:29
|
|
* src/smooth/ftgrays.c (gray_sweep): Improve code.
|
|
|
a3754d66
|
2017-02-01T22:36:16
|
|
Comment.
|
|
|
2ca5b07d
|
2017-01-31T23:13:50
|
|
* src/smooth/ftgrays.c (gray_render_scanline): Improve code.
|
|
|
563ae780
|
2017-01-04T20:16:34
|
|
Update copyright year.
|
|
|
24be60b5
|
2017-01-01T08:20:38
|
|
*/*: Use hex numbers for errors in tracing messages.
|
|
|
4441f7b2
|
2016-12-26T17:08:17
|
|
Replace `foo == NULL' and `foo != NULL' with `!foo' and `foo', resp.
Other minor formatting.
|
|
|
37c72f66
|
2016-12-25T22:55:25
|
|
Minor formatting.
|
|
|
1d28f697
|
2016-11-29T18:45:22
|
|
[smooth] Revert previous commit. Already fixed with 6ca54c64.
|
|
|
d949a3db
|
2016-11-29T12:09:56
|
|
[smooth] Avoid conditional jump on uninitialized value (#49711).
* src/smooth/ftgrays.c (gray_raster_render): Initialize `worker'.
|
|
|
b0aacff4
|
2016-10-01T12:55:33
|
|
[smooth] Remove impossibility.
* src/smooth/ftgrays.c (TWorker): Rearrange fields.
(gray_convert_glyph): Remove impossible condition and clean up.
|
|
|
45cad2e5
|
2016-09-28T19:10:52
|
|
More FT_ZERO usage.
* src/gxvalid/gxvcommn.c (gxv_ClassTable_validate):
s/ft_memset/FT_MEM_ZERO/.
* src/psaux/t1decode.c (t1_decoder_parse_charstrings):
s/ft_memset/FT_ARRAY_ZERO/.
* src/raster/ftraster.c (FT_ZERO): Define.
(ft_black_new): Use it.
* src/raster/ftrend1.c (ft_raster1_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
* src/smooth/ftgrays.c (FT_ZERO): Define.
(gray_raster_new): Use it.
* src/smooth/ftsmooth.c (ft_smooth_get_cbox):
s/FT_MEM_ZERO/FT_ZERO/.
|
|
|
53ae7a54
|
2016-09-22T22:48:15
|
|
[smooth] Reduce divisions in the line renderer.
We don't need some divisions if a line segments stays within a single
row or a single column of pixels.
* src/smooth/ftgrays.c (gray_render_line) [FT_LONG64]: Make divisions
conditional.
|
|
|
c95b7652
|
2016-09-17T17:12:50
|
|
s/0/NULL/ for function pointers; comments, formatting.
|
|
|
d5f7533e
|
2016-09-15T00:13:36
|
|
* src/smooth/ftgrays.c (gray_sweep): Remove check for empty table.
|
|
|
ad47550b
|
2016-09-14T23:15:03
|
|
[smooth] Another tiny speed-up.
* src/smooth/ftgrays.c (gray_find_cell): Merge into...
(gray_record_cell): ... this function.
|
|
|
c38be52b
|
2016-09-11T22:44:44
|
|
* src/smooth/ftgrays.c (gray_{find,set}_cell): Remove dubious code.
|
|
|
6ca54c64
|
2016-09-11T16:00:52
|
|
[smooth] Fix valgrind warning and reoptimize.
The algorithm calls `gray_set_cell' at the start of each new contour
or when the contours cross the cell boundaries. Double-checking for
that is wasteful.
* src/smooth/ftgrays.c (gray_set_cell): Remove check for a new cell.
(gray_convert_glyph): Remove initialization introduced by 44b172e88.
|
|
|
a0b92bcb
|
2016-09-07T23:19:57
|
|
* src/smooth/ftgrays.c (gray_hline): Microptimize.
|
|
|
9d0a3bd8
|
2016-09-06T23:59:33
|
|
[smooth] Operate in absolute bitmap coordinates.
Simpler bitmap addressing improves performance by 1.5%.
* src/smooth/ftgrays.c (gray_TWorker): Remove count fields.
(gray_dump_cells, gray_find_cell, gray_set_cell, gray_hline,
gray_sweep, gray_convert_glyph, gray_raster_render): Updated.
|
|
|
44b172e8
|
2016-09-06T23:24:17
|
|
[smooth] Improve contour start (take 2).
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
(gray_convert_glyph): Make initial y-coordinate invalid.
|
|
|
9773d5f7
|
2016-09-05T23:33:35
|
|
* src/smooth/ftgrays.c (gray_move_to, gray_start_cell): Revert.
|
|
|
7effc279
|
2016-09-05T21:58:56
|
|
[smooth] Improve contour start.
* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
|
|
|
16583ccd
|
2016-09-02T22:45:14
|
|
* src/smooth/ftgrays.c (gray_hline): Fix clang compiler warnings.
|
|
|
11d3336a
|
2016-09-01T22:56:24
|
|
[smooth] Simplify span rendering more.
It turns out that there is significant cost associated with `FT_Span'
creation and calls to `gray_render_span' because it happerns so
frequently. This removes these steps from our internal use but leaves
it alone for `FT_RASTER_FLAG_DIRECT" to preserve API. The speed gain
is about 5%.
* src/smooth/ftgrays.c (gray_render_span): Removed. The code is
migrated to...
(gray_hline): ... here.
|
|
|
f44ddfda
|
2016-08-30T23:21:23
|
|
[smooth] Streamline pixmap drawing a bit more.
Zero coverage is unlikely (1 out of 256) to warrant checking. This
gives 0.5% speed improvement in dendering simple glyphs.
* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
|
|
|
e73055c7
|
2016-08-29T23:15:35
|
|
[smooth] Streamline pixmap drawing.
This gives 2% speed improvement in rendering simple glyphs.
* src/smooth/ftgrays.c (TPixmap): Reduced pixmap descriptor with a
pointer to its bottom-left and pitch to be used in...
(gray_TWorker): ... here.
(gray_render_span): Move pixmap flow check from here...
(gray_raster_render): .. to here.
|
|
|
4d3f7ca8
|
2016-08-27T23:25:54
|
|
[smooth] Reduce stack of band boundaries.
* src/smooth/ftgrays.c (gray_TBand): Removed.
(gray_convert_glyph): Updated to stack band boundaries concisely.
|
|
|
9a444f05
|
2016-08-25T22:36:01
|
|
* src/smooth/ftgrays.c (gray_raster_render): Minor tweaks.
|
|
|
cb438878
|
2016-08-22T23:06:45
|
|
[smooth] Simplify span rendering.
This removes unnecessary complexity of span merging and buffering.
Instead, the spans are rendered as they come, speeding up the
rendering by about 5% percents as a result.
* src/smooth/ftgrays.c [FT_MAX_GRAY_SPANS]: Macro removed.
(gray_TWorker): Remove span buffer and related fields.
(gray_sweep, gray_hline): Updated.
* include/freetype/ftimage.h: Remove documentation note about
`FT_MAX_GRAY_SPANS', which was never in `ftoption.h' and is now gone.
|
|
3b37bfc4
|
2016-08-10T22:38:08
|
|
* src/smooth/ftgrays.c (gray_hline): Fix uninitialized access.
|
|
|
97718f3c
|
2016-08-05T23:36:16
|
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[smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_scanline, gray_render_line):
Updated.
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971f10b6
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2016-07-08T06:59:31
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Formatting.
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109d1662
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2016-07-08T06:58:46
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Revert "Formatting."
This reverts commit a0f3a1f25a69a7c5268e87ee6e7a9238c26e6242.
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a0f3a1f2
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2016-07-08T06:53:46
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Formatting.
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4a2f8f1f
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2016-07-08T00:16:07
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[smooth] Sub-banding protocol revision.
Rasterization sub-banding is utilized at large sizes while using
rather small fixed memory pool. Indeed it is possible to make an
educated guess how much memory is necessary at a given size for a
given glyph. It turns out that, for large majority of European glyphs,
you should store about 8 times more boundary pixels than their height.
Or, vice versa, if your memory pool can hold 800 pixels the band
height should be 100 and you should sub-band anything larger than
that. Should you still run out of memory, FreeType bisects the band
but you have wasted some time. This is what has been implemented in
FreeType since the beginning.
It was overlooked, however, that the top band could grow to twice the
default band size leading to unnecessary memory overflows there. This
commit fixes that. Now the bands are distributed more evenly and
cannot exceed the default size.
Now the magic number 8 is really suitable for rather simple European
scripts. For complex Chinese logograms the magic number should be 13
but that is subject for another day.
* src/smooth/ftgrays.c (gray_convert_glyph): Revise sub-banding
protocol.
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d1876e58
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2016-07-04T23:46:53
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[smooth] Variable type revision (part 2).
* src/smooth/ftgrays.c (TArea): Restore original definition as `int'.
(gray_render_line) [FT_LONG64]: Updated.
(gray_convert_glyph): 32-bit band bisection stack should be 32 bands.
(gray_convert_glyph_inner): Trace successes and failures.
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597c6959
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2016-07-01T23:27:41
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[smooth] Variable type revision (part 1).
This patch restores original `TCoord' definition as `int' so that the
rendering pool is used more efficiently on LP64 platforms (unix).
* src/smooth/ftgrays.c (gray_TWorker, TCell, gray_TBand): Switch some
fields to `TCoord'.
(gray_find_cell, gray_render_scanline, gray_render_line, gray_hline,
gray_sweep, gray_convert_glyph): Updated.
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ef0a3e7e
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2016-06-28T22:56:22
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[smooth] Minor clean-ups.
* src/smooth/ftgrays.c (gray_TWorker): Remove redundant `ycount'.
(gray_sweep, gray_convert_glyph, gray_dump_cells): Updated.
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c9cf359f
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2016-06-28T00:30:58
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[smooth] Minor clean-ups.
* src/smooth/ftgrays.c (gray_convert_glyph): Do not use volatile
qualifier.
(gray_raster_render): Move span initializations from here.
(gray_sweep): ... to here and remove unused `target' argument.
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25e82bc2
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2016-06-23T23:17:39
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[smooth] Consolidate memory management.
* src/smooth/ftgrays.c (gray_init_cells): Remove function.
(gray_TWorker): Remove fields that become local variables.
(gray_raster_render): Move rendering buffer declaration from here.
(gray_convert_glyph): ... to here and update accordingly.
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e2233481
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2016-06-22T23:14:26
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[smooth] Consolidate boundary checks.
Removing the checks from `gray_hline' shaves 1% off rendering speed.
* src/smooth/ftgrays.c [STANDALONE_]: Duplicate `FT_MIN' and `FT_MAX'.
(gray_TWorker): No need to store `clip_box'.
(gray_hline): Remove unnecessary boundary checks.
(gray_convert_glyph): Move boundary checks from here.
(gray_raster_render): ... to here and consolidate.
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78e8fc0d
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2016-06-22T00:04:08
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[smooth] Use `FT_Outline_Get_CBox'.
* src/smooth/ftgrays.c [STANDALONE_]: Duplicate `FT_Outline_Get_CBox'.
(gray_compute_cbox): Remove this function.
(gray_convert_glyph): Update to use `FT_Outline_Get_CBox'.
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20c6ef4c
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2016-06-21T11:39:34
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[smooth] Remove compiler warnings.
* src/smooth/ftgrays.c (gray_convert_glyph): Fix reports from clang.
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3c64af98
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2016-06-20T00:01:55
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[smooth] Sanitize memory managenent.
* src/smooth/ftgrays.c (gray_convert_glyph): Cleaned up.
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74fd251b
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2016-06-18T22:31:26
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[smooth] Remove `band_shoot' that never worked.
* src/smooth/ftgrays.c (gray_TWorker): Remove `band_shoot'.
(gray_convert_glyph): Updated.
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3e1f7bc5
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2016-06-18T22:13:23
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Fresh typos.
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72a06531
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2016-06-17T23:10:22
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[raster, smooth] Handle FT_RENDER_POOL_SIZE better.
* src/raster/ftraster.c (FT_MAX_BLACK_POOL): New macro.
(ft_black_render): Updated.
* src/smooth/ftgrays.c (FT_MAX_GRAY_POOL): New macro.
(gray_raster_render): Updated.
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7f569f45
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2016-06-14T23:49:31
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Move function.
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32acceff
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2016-06-14T23:38:17
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* src/smooth/ftgrays.c (gray_hline): Optimize if-condition.
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77180c7a
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2016-06-08T23:31:28
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[smooth] Re-enable new line renderer on 64-bit archs.
* src/smooth/ftgrays (gray_render_line): Conditionally re-enable new
implementation, where it is safe from overflows.
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9cf232ed
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2016-06-08T23:19:41
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[smooth] Minor clean-ups.
* src/smooth/ftgrays.c (gray_dump_cells): Move out of the way.
(gray_render_span): Remove spurious casts and streamline.
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e9f95093
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2016-05-26T23:46:38
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[smooth] Shrink bisection stack.
The convergence of Bézier flatteners is fast with the deviation
from straight line being assymptotically cut 4-fold on each bisection.
This justifies smaller bisection stack size.
* src/smooth/ftgrays.c (gray_TWorker): Remove common `bez_stack'.
(gray_render_conic): Create and use conic `bez_stack'. Move back the
band analysis from...
(gray_conic_to): ... here.
(gray_render_cubic): Create and use cubic `bez_stack'. Move back the
band analysis from...
(gray_cubic_to): ... here.
(gray_move_to): Updated.
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6e88087d
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2016-05-05T23:41:03
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[smooth] More efficient accounting of conic splits and draws.
A single decrement counter of segments to draw, instead of an array,
contains all the information necessary to decide when to split and
when to draw a conic segment. The number of splits before each draw is
equal to the number of trailing zeros in the counter.
* src/smooth/ftgrays.c (gray_TWorker): Remove `lev_stack'.
(gray_render_conic): Updated to use decrement counter of segments.
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98967b77
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2016-03-23T23:07:24
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Add comment.
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31f2dc19
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2016-03-23T07:31:59
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[raster, smooth] Directly test outline size (#47500).
This improves stand-alone compilation.
* src/base/ftoutln.c (FT_Outline_Render): Move cbox size test to...
* src/raster/ftraster.c (ft_black_render), src/smooth/ftgrays.c
(gray_raster_render): ...these functions.
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e9181aba
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2016-03-23T06:58:20
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[raster, smooth] Fix some clang sanitizer runtime issues.
* src/raster/ftraster.c (ft_black_reset, ft_black_set_mode,
ft_black_render): Harmonize signatures with `ftimage.h'.
* src/smooth/ftgrays.c (gray_raster_render, gray_raster_reset):
Ditto.
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3beccbdf
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2016-03-21T00:07:47
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[smooth] Partly revert recent changes.
* src/smooth/ftgrays.c (gray_conic_to, gray_cubic_to): Rework
conditions to fix rendering issues.
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8e8bb126
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2016-03-18T23:21:59
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[smooth] Minor refactoring and microoptimizations.
* src/smooth/ftgrays.c (gray_render_conic, gray_render_cubic): Move
band clipping from here.
(gray_conic_to, gray_cubic_to): ... to here.
(gray_rander_line, gray_render_scanline): Initialize variables closer
to their use.
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84b2c633
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2016-03-17T00:53:09
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[smooth] Minor refactoring.
* src/smooth/ftgrays.c (gray_render_conic, gray_render_cubic): Move
upscaling from here...
(gray_conic_to, gray_cubic_to):... to here.
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1865575a
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2016-03-14T22:39:22
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[smooth] Temporarily revert 6eb6158dd787 (#47114).
* src/smooth/ftgrays.c (gray_render_line): Old implementation.
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d0b0e31e
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2016-03-06T23:01:50
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[smooth] Replace left shifts with multiplications (#47114).
* src/smooth/ftgrays.c (SUBPIXELS, UPSCALE, DOWNSCALE): Do it.
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015c6e08
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2016-03-01T06:45:52
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Fix clang warnings.
* src/autofit/aflatin.c (af_latin_hints_compute_segments): Use
FT_UShort for `min_flags' and `max_flags'.
Initialize `prev_*' variables.
* src/cff/cffobjs.c (cff_face_init) [FT_DEBUG_LEVEL_TRACE]: Fix
types of local variables.
* src/smooth/ftgrays.c (gray_dump_cells) [FT_DEBUG_LEVEL_TRACE]:
Update `printf' format string.
* src/tools/ftfuzzer/ftfuzzer.cc (setIntermediateAxis): Add cast.
(LLVMFuzzerTestOneInput): Fix loop type.
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08e89b73
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2016-02-16T22:32:13
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[smooth] Fix integer overflow (#47114).
* src/smooth/ftgrays.c (TArea): Make it unconditionally `long'.
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9adeab64
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2016-01-13T11:54:10
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Update copyright year.
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9d0b76d7
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2016-01-12T22:27:29
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Don't use macro names that start with `_[A-Z]' [2/3].
Such macro names are reserved for both C and C++.
* include/freetype/ftimage.h, src/raster/ftraster.c,
src/smooth/ftgrays.c, src/smooth/ftgrays.h:
s/_STANDALONE_/STANDALONE_/.
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37412ff9
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2016-01-12T21:37:13
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Don't use macro names that contain `__' [1/2].
Such macro names are reserved for both C and C++.
*/*: Replace macros of the form `__XXX_H__' with `XXX_H_'.
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6eb6158d
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2015-10-06T22:39:54
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[smooth] Faster alternative line renderer.
This implementation renders the entire line segment at once without
subdividing it into scanlines. The main speed improvement comes from
reducing the number of divisions to just two per line segment, which
is a bare minimum to calculate cell coverage in a smooth rasterizer.
Notably, the progression from cell to cell does not itself require any
divisions at all. The speed improvement is more noticeable at larger
sizes.
* src/smooth/ftgrays.c (gray_render_line): New implementation.
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e2dae8fe
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2015-10-01T22:03:34
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[smooth] Clean up worker.
* src/smooth/ftgrays.c (gray_TWorker): Remove never used fields.
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8bbcfb2c
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2015-09-30T23:08:53
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[smooth] Clean up worker.
* src/smooth/ftgrays.c (gray_TWorker): Remove lightly used `last_ey'.
(gray_start_cell, gray_render_line): Update.
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d8a44ff9
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2015-09-26T22:33:55
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Remove unused macro.
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b002f688
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2015-09-07T13:47:36
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* src/smooth/ftgrays.c (gray_render_line): Simplify clipping.
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