kmx git

Commit	Date	Message
d0cfb4e1	2022-01-11T10:54:10	Update all copyright notices.
4eb6cb88	2021-12-25T09:23:58	Fix warnings for CMake Unity builds. * src/cache/ftcbasic.c (FT_COMPONENT): Undefine macro before redefinition. * src/smooth/ftgrays.c (TRUNC, FRACT): Ditto.
f5ce1824	2021-11-20T07:56:34	[smooth] Fix stand-alone compilation. * src/smooth/ftgrays.c (FT_Trace_Enable, FT_Trace_Disable)[STANDALONE_]: Define.
8c8f51c5	2021-11-19T21:50:22	Avoid undefined left-shifts. We really have to use double casts to avoid issues with C's and C++'s signedness propagation rules in implicit casts. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41178 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41182 * include/freetype/config/public-macros.h (FT_STATIC_CAST, FT_REINTERPRET_CAST): Modify macro to take two arguments. Update all callers. (FT_STATIC_BYTE_CAST): New macro. * include/freetype/freetype.h (FT_ENC_TAG): Use `FT_STATIC_BYTE_CAST`. * include/freetype/ftimage.h (FT_IMAGE_TAG): Ditto. * include/freetype/fttypes.h (FT_MAKE_TAG): Ditto. Use `FT_Tag` for casting. * src/ftraster/ftmisc.h (FT_MAKE_TAG): Removed, no longer needed. (FT_STATIC_BYTE_CAST): New macro. * src/smooth/ftgrays.c (FT_STATIC_CAST): Replace with... (FT_STATIC_BYTE_CAST): ... this.
9079c5d9	2021-11-13T08:53:19	Provide C++ versions for public macros with casts. Many FreeType clients use C++. However `g++ -Wold-style-cast` warns for macros with C-style casts even for system header files; this also affects directories included with `-isystem`. While this could be seen as a problem with g++, the problem is more a philosophical one: Over the time, C and C++ diverged more and more, and some features of C are no longer the 'right' solution in C++. * include/freetype/config/public-macros.h (FT_STATIC_CAST, FT_REINTERPRET_CAST): New macros. * include/freetype/freetype.h (FT_ENC_TAG, FT_LOAD_TARGET_, FT_LOAD_TARGET_MODE): Use `FT_STATIC_CAST`. Correctly handle negative 'signed char' input. * include/freetype/ftimage.h (FT_IMAGE_TAG): Ditto. * include/freetype/fttypes.h (FT_MAKE_TAG, FT_BOOL): Ditto. * include/freetype/ftmodapi.h (FT_FACE_DRIVER_NAME): Use `FT_REINTERPRET_CAST`. * src/smooth/ftgrays.c (FT_STATIC_CAST)[STANDALONE_]: New macro. [!STANDALONE]: Include `FT_CONFIG_CONFIG_H`. Fixes #1116.
238245cd	2021-11-16T22:07:28	Fix clang++ warnings. * src/*: Initialize some variables to NULL.
d31bafcb	2021-11-14T11:02:54	Fix clang warnings. * src/gxvalid/gxvcmmn.h (GXV_SET_ERR_IF_PARANOID): Use 'do' block. * src/gxvalid/gxvmod.c (GXV_TABLE_LOAD, GXV_TABLE_VALIDATE): Ditto. * src/smooth/ftgrays.c (gray_convert_glyph): Add cast. * src/type1/t1gload.c (T1_Parse_Glyph_And_Get_Char_String): Remove cast. * src/type1/t1load.c (read_binay_data): Use `FT_ULong` for `size` parameter. (parse_subrs, parse_charstrings, parse_dict): Ditto; also add some casts.
0f23ae2e	2021-10-05T16:28:40	* src/smooth/ftgrays.c (FT_DIV_MOD): Limit the ARM workaround.
61903609	2021-09-20T22:18:29	Minor.
7f8f0c1c	2021-09-02T23:30:31	[smooth, raster, sdf] Clean up initialization calls. * src/raster/ftraster.c (ft_black_init): Removed. (ft_black_new): Clean up. * src/sdf/ftbsdf.c (bsdf_raster_new): Ditto. * src/sdf/ftsdf.c (sdf_raster_new): Ditto. * src/smooth/ftgrays.c (gray_raster_new): Ditto.
b6c11d49	2021-08-30T07:09:53	[smooth] Reduce shift in multiply-shift optimization. * src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): Reduce shift. Smaller shifts that keep the division operands of FT_UDIVPREP within 32 bits result in slightly faster divisions, which is noticeable in the overall performance. The loss of precision is tolerable until the divisors (the components dx and dy) approach 32 - PIXEL_BITS. With PIXEL_BITS = 8, this corresponds to 65,000 pixels or the bitmap size that we refuse to render anyway. Using `ftbench -p -s60 -t5 -bc timesi.ttf`, Before: 8.52 us/op After: 8.32 us/op
a842a098	2021-08-26T16:12:22	[smooth] Detect SSE2 with MSVC for x86 MSVC does not set `__SSE2__`. Instead one must check whether `_M_IX86_FP` is defined and greater than or equal to 2. * src/smooth/ftgrays.c (FT_SSE2): New macro. Use it where appropriate.
3785393d	2021-08-26T15:31:11	Expand comment (cont'd).
686e2a5e	2021-08-25T23:18:43	Expand comment.
f7f9cb0d	2021-08-24T15:29:06	* src/smooth/ftgrays.c (gray_render_conic): Refactor redundancy.
d62d583d	2021-08-20T23:40:49	[smooth] Clean up the null cell usage. Put the null cell at the end of the pool and store it explicitly so that we can use it as both the limit and the dumpster. * src/smooth/ftgrays.c (gray_TWorker): Store the last `cell_null` and remove unnecesary fields. (NULL_CELL_PTR, CELL_IS_NULL): Remove in favor of explicit `cell_null`. (gray_dump_cells, gray_set_cell, gray_sweep{,_direct}): Update callers. (gray_convert_glyph_inner): Trace remaining cells (oh well). (gray_convert_glyph): Set up `cell_null` and slightly improve the pool management.
de3b5c20	2021-08-20T13:51:40	[smooth] Fortify 64-bit algorithm. * src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): s/long/FT_Int64/ and s/unsigned long/FT_UInt64/. (gray_render_line): Adjust a critical variable type.
85703839	2021-08-18T23:05:51	Use FT_INT64 instead of FT_LONG64. * include/freetype/config/integer-types.h: Remove synonymous FT_LONG64. * include/freetype/internal/ftcalc.h: s/FT_LONG64/FT_INT64/. * src/base/ftcalc.c: Ditto. * src/base/fttrigon.c: Ditto. * src/smooth/ftgrays.c: Ditto.
18fc64e6	2021-08-07T17:11:57	[smooth] Avoid integer overflow. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36243 * src/smooth/ftgrays.c(ADD_LONG, SUB_LONG, MUL_LONG, NEG_LONG) [STANDALONE_]: Removed, unused. (ADD_INT) [STANDALONE_]: New macro. (FT_INTEGRATE): Use ADD_INT.
6be8bfe4	2021-08-06T08:31:22	[smooth] Fix left shifts of negative numbers. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36241 * src/smooth/ftgrays.c (LEFT_SHIFT): New macro. (gray_render_conic) [BEZIER_USE_DDA]: Use it.
c2fa51d9	2021-07-24T20:32:16	Fix some `cppcheck` warnings. * src/bzip2/ftbzip2.c (ft_bzip2_file_skip_output), src/gzip/ftgzip.c (ft_gzip_file_skip_output): Reduce scope of `delta`. * src/psaux/psintrp.c, src/psaux/psintrp.h (cf2_interpT2CharString): Add `const` to `buf` parameter. * src/raster/ftraster.c (DelOld): Add `const` to `profile` parameter. (Vertical_Sweep_Span): Reduce scope of `target`. (FT_Outline_Get_CBox): Reduce scope of `xMin`, `xMax`, `yMin`, `yMax`. * src/smooth/ftgrays.c (gray_render_conic): Reduce scope of `split`. (gray_sweep, gray_sweep_direct): Reduce scope of `area`. * src/tools/apinames.c (names_dump) <OUTPUT_WATCOM_LBC>: Reduce scope of `temp`.
357b353c	2021-07-16T11:12:13	* src/smooth/ftgrays.c: Fix compilation if `FT_LONG64` is undefined. The code assumed that if `__SSE2__` is defined, then 64-bit integer types are available. This is not the case apparently for certain multilib compiler targets like 'x86_32.x86' used by Gentoo. This patch fixes the issue by disabling the special code path when 64-bit integer types are not available. Fixes #1071.
552fc97f	2021-07-16T07:49:20	[smooth] Minor fixes. * src/smooth/ftgrays.c (gray_render_conic): Move variable and structure declarations to beginning of function. Inspite of C99 compliance we still do this for the sake of backward compatibility. This also avoids a shadowing declaration of `count`. (gray_convert_glyph_inner): Fix typo.
93771d61	2021-07-16T07:40:56	Formatting and ChangeLog additions for previous commits.
c37c0873	2021-07-15T11:33:16	Guard inclusion of emmintrin.h Guard inclusion of emmintrin.h with "#ifdef __SSE2__". The gcc version of this header, xmmintrin.h, and mmintrin.h check that the appropriate defines are set before defining anything (are internally guarded). However the clang versions of these includes are not internally guarded. As a result of this, externally guard the inclusion of these headers.
56cc2ad4	2021-06-19T10:26:53	[smooth] Implement Bezier quadratic arc flattenning with DDA Benchmarking shows that this provides a very slighty performance boost when rendering fonts with lots of quadratic bezier arcs, compared to the recursive arc splitting, but only when SSE2 is available, or on 64-bit CPUs. On a 2017 Core i5-7300U CPU on Linux/x86_64: ./ftbench -p -s10 -t5 -cb .../DroidSansFallbackFull.ttf Before: 4.033 us/op (best of 5 runs for all numbers) After: 3.876 us/op ./ftbench -p -s60 -t5 -cb .../DroidSansFallbackFull.ttf Before: 13.467 us/op After: 13.385 us/op
86b9c934	2021-06-19T11:18:40	[smooth] Minor speedup to smooth rasterizer This speeds up the smooth rasterizer by avoiding a conditional branches in the hot path. Namely: - Define a fixed "null cell" which will be pointed to whenever the current cell is outside of the current target region. This avoids a "ras.cell != NULL" check in the FT_INTEGRATE() macro. - Also use the null cell as a sentinel at the end of all ycells[] linked-lists, by setting its x coordinate to INT_MAX. This avoids a 'if (!cell)' check in gray_set_cell() as well. - Slightly change the worker struct fields to perform a little less operations during rendering. Example results (on a 2013 Corei5-3337U CPU) out/ftbench -p -s10 -t5 -bc /usr/share/fonts/truetype/droid/DroidSansFallbackFull.ttf Before: 5.472 us/op After: 5.275 us/op out/ftbench -p -s60 -t5 -bc /usr/share/fonts/truetype/droid/DroidSansFallbackFull.ttf Before: 17.988 us/op After: 17.389 us/op
1e0cef9e	2021-06-24T00:19:50	[smooth, raster] Fix up and align error codes. FT_Render_Glyph picked up FAILURE or 1 returned from the raster function, which became a confusing error code. Instead, return Raster_Overflow in the unlikely event that banding does not help or another meaningful error. * src/smooth/ftgrays.c (gray_convert_glyph_inner, gray_convert_glyph): Use Raster_Overflow when the rendering pool is exhausted and return it if banding does not help. (gray_raster_render): Use Smooth_Err_Ok. * src/raster/ftraster.c (Render_Single_Pass): Return Raster_Overflow if banding does not help or another error code.
d8ac180c	2021-06-23T23:32:02	[smooth, raster] Remove synonymous error macros. * src/smooth/ftgays.c [STANDALONE_]: s/ErrRaster_/Smooth_Err_/. (gray_convert_glyph_inner): Updated accordingly. * src/raster/ftraster.c [STANDALONE_]: Do not abbreviate error macros. (New_Profile, End_Profile, Insert_Y_Turn, Line_Up, Bezier_Up, Decompose_Curve, Draw_Sweep, Render_Single_Pass, ft_black_render): Updated accordingly.
2d3f5dd2	2021-05-12T17:24:35	* src/smooth/ftgrays.c (FT_MAX_GRAY_SPANS): Increase from 10 to 16. Ten was barely enough for two slanted stems. Sixteen can actually fit a bit more complicated scanlines.
c653b8d2	2021-05-12T16:17:21	* src/smooth/ftgrays.c (FT_GRAY_SET): Adjust for better code.
8f43d324	2021-05-12T00:04:59	[smooth] Faster bitmap sweeping. Selecting the fill rule or checking the direct mode each time we call `gray_hline' is sub-optimal. This effectively splits the direct mode into a separate code path while inlining `gray_hline' and saving 5-7% of rendering time. * src/smooth/ftgrays.c (gray_hline): Eliminated in favor of... (FT_FILL_RULE, FT_GRAY_SET): ... these new macros... (gray_sweep): ... inlined here. (gray_sweep_direct): New function that handles the direct span buffer. (gray_TWorker): Remove the span buffer. (gray_raster_render, gray_convert_glyph): Updated.
b0702645	2021-05-10T22:06:01	* src/smooth/ftgrays.c (gray_hline): Simplify even-odd computations. It is too bad the even-odd rule is not used much.
fb9bf2ef	2021-03-15T22:33:17	* src/smooth/ftgrays.c (gray_set_cell): Refactor to fix VC++ warning.
80bda804	2021-03-11T22:40:19	[smooth] Reduce copying during integration phase. We now record `cover' and `area' directly into the linked list. This makes rendering faster by 10% or even more at larger sizes. * src/smooth/ftgrays.c (FT_INTEGRATE): Write directly. (gray_TWorker): Add direct cell reference and remove unused fields. (gray_set_cell): Consolidate the linked list management and pointers. (gray_convert_glyph, gray_convert_glyph_inner): Updated.
d5b7de55	2021-03-11T22:08:45	* src/smooth/ftgrays.c (FT_INTEGRATE): New convenience macro. (gray_render_line, gray_render_scanline): Use it.
85168499	2021-03-09T22:14:44	* src/smooth/ftgrays.c (gray_render_line): Rearrange conditionals. These produce faster or more optimizable code.
b6e8a712	2021-01-17T07:18:48	Update all copyright notices.
53be1753	2020-07-28T07:33:40	Fix `-Wformat' compiler warnings. * src/: Fix format specifiers. builds/unix/ftsystem.c (FT_Stream_Open): Ditto.
16586859	2020-06-13T21:15:45	Remove redundant inclusion of `ft2build.h'. * /: Remove `#include <ft2build.h>' where possible. * include/freetype/freetype.h: Remove cpp error about missing inclusion of `ft2build.h'.
e1339133	2020-06-08T13:31:55	Make macros for header file names optional. We no longer have to take care of the 8.3 file name limit; this allows us (a) to introduce longer, meaningful file names, and (b) to avoid macro names in `#include' lines altogether since some compilers (most notably Visual C++) doesn't support this properly. /: Replace #include FOO_H with #include <freetype/foo.h> or something similar. Also update the documentation.
e5038be7	2020-01-19T17:05:19	Update all copyright notices.
e7ac9288	2019-06-13T00:17:36	[smooth] Restore the span buffering for direct mode only. The buffer size FT_MAX_GRAY_SPANS is set to 10 spans, which should be enough to cover the entire scanline for simple glyphs in most cases: each slightly slanted edge needs up to two spans, plus a filling span in-between. This is not new, we used to do it before cb4388783cecc. * src/smooth/ftgrays.c (gray_TWorker): Add `spans' and `num_spans'. (gray_hline, gray_sweep): Implement the span buffering. (gray_raster_render): Use negative `num_spans' to avoid the direct mode.
bdac4cbe	2019-06-12T21:58:35	Rendering considerations.
9159128a	2019-05-29T07:45:54	Silence gcc 7's fall-through warnings in `switch' blocks. Instead of an intentionally missing `break' statement there must be a comment line containing `fall through' (and nothing else) right before the next `case' statement. See https://stackoverflow.com/questions/45129741/gcc-7-wimplicit-fallthrough-warnings-and-portable-way-to-clear-them
141e3173	2019-05-20T23:09:59	Rendering considerations.
bc3b5281	2019-05-08T22:08:40	[smooth] Faster fractions. * src/smooth/ftgrays.c (SUBPIXELS): Replace with... (FRACT): A fractional coordinate macro to use in... (gray_render_line, gray_render_scanline): ... here.
81725773	2019-05-04T08:11:20	* src/smooth/ftgrays.c (gray_render_line): Small shortcut.
300458eb	2019-05-03T23:16:42	Miscellaneous macro updates. * src/base/ftoutln.c (SCALED): Updated. * src/smooth/ftgrays.c (SCALED): Ditto. (FLOOR, ROUND, CEILING): Removed. * src/psaux/psfixed.h (cf2_fracToFixed): Updated.
2ea511ee	2019-04-29T22:49:15	[smooth] Simplify cubic Bézier flattening. The previous implementation is correct but it is too complex. The revised algorithm is based on the fact that each split moves the control points closer to the trisection points on the chord. The corresponding distances are good surrogates for the curve deviation from the straight line. This cubic flattening algorithm is somewhat similar to the conic algorithm based the distance from the control point to the middle of the chord. The cubic distances, however, decrease less predictably but are easy enough to calculate on each step. * src/smooth/ftgrays.c (gray_render_cubic): Replace the split condition.
80475ede	2019-04-26T21:53:00	[smooth] Bithacks and cosmetics. * src/smooth/ftgrays.c (gray_record_cell, gray_set_cell, gray_hline, gray_render_conic, gray_convert_glyph_inner): Updated.
7a81b63a	2019-04-25T22:06:33	Optimize Bézier bisections. * src/raster/ftraster.c (Split_Conic, Split_Cubic): Use shifts and refactor. * src/smooth/ftgrays.c (gray_split_conic, gray_split_cubic): Ditto. * src/base/ftstroke.c (ft_conic_split, ft_cubic_split): Ditto. * src/base/ftbbox.c (cubic_peak): Use shifts.
1f271751	2019-04-11T23:48:21	[smooth] Fix segfault in direct mode (#56092). * src/base/ftoutln.c (FT_Outline_Render): Set missing clip_box for direct mode. * src/smooth/ftgrays.c (gray_raster_render): Use it.
75859970	2019-02-23T10:07:09	Update all copyright notices.
f686ad46	2019-01-22T20:31:44	Update copyright years.
afa043de	2018-12-25T22:44:05	Fix links (mostly http -> https).
9817571c	2018-10-03T08:04:55	[ftgrays] Fix typo in stand-alone mode (#54771). * src/smooth/ftgrays.c (FT_THROW) [STANDALONE_ && FT_DEBUG_LEVEL_TRACE]: Fix call to `FT_ERR_CAT'.
a0dd16fb	2018-08-15T18:13:17	Don't use `trace_' prefix for FT_COMPONENT arguments. * include/freetype/internal/ftdebug.h (FT_TRACE_COMP, FT_TRACE_COMP_): New auxiliary macros to add `trace_' prefix. (FT_TRACE): Use `FT_TRACE_COMP'. / (FT_COMPONENT): Updated.
e16bfbec	2018-08-09T22:18:00	[raster, smooth] Reinstate bitmap size limits. This again moves outline and bitmap size checks one level up. * src/base/ftoutln.c (FT_Outline_Render): Explicitly reject enormous outlines. * src/raster/ftrend1.c (ft_raster1_render): Reject enormous bitmaps and, therefore, outlines that require them. * src/smooth/ftsmooth.c (ft_smooth_render_generic): Ditto. * src/raster/ftraster.c (ft_black_render): Remove outline size checks. * src/smooth/ftgrays.c (gray_raster_render): Ditto. [STANDALONE]: Remove `FT_Outline_Get_CBox' copy.
f60c98fe	2018-08-08T18:15:53	[smooth] Improve tracing. * src/smooth/ftgrays.c (gray_convert_glyph_inner): Only use tracing if called the first time. (gray_convert_glyph): Updated.
ca4e707a	2018-06-06T08:18:23	[smooth, raster] Limit bitmap size (#54019). * src/raster/ftraster.c [STANDALONE] (FT_Outline_Get_CBox): Add function. [!STANDALONE]: Include FT_OUTLINE_H. (ft_black_render): Compute CBox and reject glyphs larger than 0xFFFF x 0xFFFF. * src/smooth/ftgrays.c (gray_raster_render): Reject glyphs larger than 0xFFFF x 0xFFFF.
80ac3645	2018-06-03T18:31:58	* src/smooth/ftgrays.c (gray_convert_glyph): Remove unused variables.
9ac9060d	2018-06-03T09:01:17	[GSoC] src/.: Convert block comments to `light' style. This monster commit was created by applying Nikhil's scripts `docconverter.py' and `markify.py' to all C header and source files, followed up by minor manual clean-up. No change in functionality, of course. I used commit f7419907bc6044b9b7057f9789866426c804ba82 from https://github.com/nikramakrishnan/freetype-docs.git.
ae248034	2018-06-02T21:42:44	[smooth] Attempt to mitigate bug #54019. The robust rendering of estra large glyphs came with unbearable cost. The old way of bisecting should fail but fail faster. * src/smooth/ftgrays.c (gray_convert_glyph): Switch back to bisecting in y-direction.
95149592	2018-05-02T20:27:48	Remove FT_CONFIG_OPTION_PIC and related code. / [FT_CONFIG_OPTION_PIC]: Remove all code guarded by this preprocessor symbol. /: Replace `XXX_GET' macros (which could be either a function in PIC mode or an array in non-PIC mode) with `xxx' arrays. * include/freetype/internal/ftpic.h, src/autofit/afpic.c, src/autofit/afpic.h, src/base/basepic.c, src/base/basepic.h, src/base/ftpic.c, src/cff/cffpic.c, src/cff/cffpic.h, src/pshinter/pshpic.c, src/pshinter/pshpic.h, src/psnames/pspic.c, src/psnames/pspic.h, src/raster/rastpic.c, src/raster/rastpic.h, src/sfnt/sfntpic.c, src/sfnt/sfntpic.h, src/smooth/ftspic.c, src/smooth/ftspic.h, src/truetype/ttpic.c, src/truetype/ttpic.h: Removed.
63aaf89c	2018-02-17T10:34:47	s/sub-pixel/subpixel/.
0a0c2256	2018-01-02T09:33:57	Update copyright year.
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.
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.
761d9e41	2017-02-22T22:41:36	* src/smooth/ftgrays.c (gray_hline): Improve code.
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.
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.

d0cfb4e1

2022-01-11T10:54:10

Update all copyright notices.

4eb6cb88

2021-12-25T09:23:58

Fix warnings for CMake Unity builds. * src/cache/ftcbasic.c (FT_COMPONENT): Undefine macro before redefinition. * src/smooth/ftgrays.c (TRUNC, FRACT): Ditto.

f5ce1824

2021-11-20T07:56:34

[smooth] Fix stand-alone compilation. * src/smooth/ftgrays.c (FT_Trace_Enable, FT_Trace_Disable)[STANDALONE_]: Define.

8c8f51c5

2021-11-19T21:50:22

Avoid undefined left-shifts. We really have to use double casts to avoid issues with C's and C++'s signedness propagation rules in implicit casts. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41178 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41182 * include/freetype/config/public-macros.h (FT_STATIC_CAST, FT_REINTERPRET_CAST): Modify macro to take two arguments. Update all callers. (FT_STATIC_BYTE_CAST): New macro. * include/freetype/freetype.h (FT_ENC_TAG): Use `FT_STATIC_BYTE_CAST`. * include/freetype/ftimage.h (FT_IMAGE_TAG): Ditto. * include/freetype/fttypes.h (FT_MAKE_TAG): Ditto. Use `FT_Tag` for casting. * src/ftraster/ftmisc.h (FT_MAKE_TAG): Removed, no longer needed. (FT_STATIC_BYTE_CAST): New macro. * src/smooth/ftgrays.c (FT_STATIC_CAST): Replace with... (FT_STATIC_BYTE_CAST): ... this.

9079c5d9

2021-11-13T08:53:19

Provide C++ versions for public macros with casts. Many FreeType clients use C++. However `g++ -Wold-style-cast` warns for macros with C-style casts even for system header files; this also affects directories included with `-isystem`. While this could be seen as a problem with g++, the problem is more a philosophical one: Over the time, C and C++ diverged more and more, and some features of C are no longer the 'right' solution in C++. * include/freetype/config/public-macros.h (FT_STATIC_CAST, FT_REINTERPRET_CAST): New macros. * include/freetype/freetype.h (FT_ENC_TAG, FT_LOAD_TARGET_, FT_LOAD_TARGET_MODE): Use `FT_STATIC_CAST`. Correctly handle negative 'signed char' input. * include/freetype/ftimage.h (FT_IMAGE_TAG): Ditto. * include/freetype/fttypes.h (FT_MAKE_TAG, FT_BOOL): Ditto. * include/freetype/ftmodapi.h (FT_FACE_DRIVER_NAME): Use `FT_REINTERPRET_CAST`. * src/smooth/ftgrays.c (FT_STATIC_CAST)[STANDALONE_]: New macro. [!STANDALONE]: Include `FT_CONFIG_CONFIG_H`. Fixes #1116.

238245cd

2021-11-16T22:07:28

Fix clang++ warnings. * src/*: Initialize some variables to NULL.

d31bafcb

2021-11-14T11:02:54

Fix clang warnings. * src/gxvalid/gxvcmmn.h (GXV_SET_ERR_IF_PARANOID): Use 'do' block. * src/gxvalid/gxvmod.c (GXV_TABLE_LOAD, GXV_TABLE_VALIDATE): Ditto. * src/smooth/ftgrays.c (gray_convert_glyph): Add cast. * src/type1/t1gload.c (T1_Parse_Glyph_And_Get_Char_String): Remove cast. * src/type1/t1load.c (read_binay_data): Use `FT_ULong` for `size` parameter. (parse_subrs, parse_charstrings, parse_dict): Ditto; also add some casts.

0f23ae2e

2021-10-05T16:28:40

* src/smooth/ftgrays.c (FT_DIV_MOD): Limit the ARM workaround.

61903609

2021-09-20T22:18:29

Minor.

7f8f0c1c

2021-09-02T23:30:31

[smooth, raster, sdf] Clean up initialization calls. * src/raster/ftraster.c (ft_black_init): Removed. (ft_black_new): Clean up. * src/sdf/ftbsdf.c (bsdf_raster_new): Ditto. * src/sdf/ftsdf.c (sdf_raster_new): Ditto. * src/smooth/ftgrays.c (gray_raster_new): Ditto.

b6c11d49

2021-08-30T07:09:53

[smooth] Reduce shift in multiply-shift optimization. * src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): Reduce shift. Smaller shifts that keep the division operands of FT_UDIVPREP within 32 bits result in slightly faster divisions, which is noticeable in the overall performance. The loss of precision is tolerable until the divisors (the components dx and dy) approach 32 - PIXEL_BITS. With PIXEL_BITS = 8, this corresponds to 65,000 pixels or the bitmap size that we refuse to render anyway. Using `ftbench -p -s60 -t5 -bc timesi.ttf`, Before: 8.52 us/op After: 8.32 us/op

a842a098

2021-08-26T16:12:22

[smooth] Detect SSE2 with MSVC for x86 MSVC does not set `__SSE2__`. Instead one must check whether `_M_IX86_FP` is defined and greater than or equal to 2. * src/smooth/ftgrays.c (FT_SSE2): New macro. Use it where appropriate.

3785393d

2021-08-26T15:31:11

Expand comment (cont'd).

686e2a5e

2021-08-25T23:18:43

Expand comment.

f7f9cb0d

2021-08-24T15:29:06

* src/smooth/ftgrays.c (gray_render_conic): Refactor redundancy.

d62d583d

2021-08-20T23:40:49

[smooth] Clean up the null cell usage. Put the null cell at the end of the pool and store it explicitly so that we can use it as both the limit and the dumpster. * src/smooth/ftgrays.c (gray_TWorker): Store the last `cell_null` and remove unnecesary fields. (NULL_CELL_PTR, CELL_IS_NULL): Remove in favor of explicit `cell_null`. (gray_dump_cells, gray_set_cell, gray_sweep{,_direct}): Update callers. (gray_convert_glyph_inner): Trace remaining cells (oh well). (gray_convert_glyph): Set up `cell_null` and slightly improve the pool management.

de3b5c20

2021-08-20T13:51:40

[smooth] Fortify 64-bit algorithm. * src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): s/long/FT_Int64/ and s/unsigned long/FT_UInt64/. (gray_render_line): Adjust a critical variable type.

85703839

2021-08-18T23:05:51

Use FT_INT64 instead of FT_LONG64. * include/freetype/config/integer-types.h: Remove synonymous FT_LONG64. * include/freetype/internal/ftcalc.h: s/FT_LONG64/FT_INT64/. * src/base/ftcalc.c: Ditto. * src/base/fttrigon.c: Ditto. * src/smooth/ftgrays.c: Ditto.

18fc64e6

2021-08-07T17:11:57

[smooth] Avoid integer overflow. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36243 * src/smooth/ftgrays.c(ADD_LONG, SUB_LONG, MUL_LONG, NEG_LONG) [STANDALONE_]: Removed, unused. (ADD_INT) [STANDALONE_]: New macro. (FT_INTEGRATE): Use ADD_INT.

6be8bfe4

2021-08-06T08:31:22

[smooth] Fix left shifts of negative numbers. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36241 * src/smooth/ftgrays.c (LEFT_SHIFT): New macro. (gray_render_conic) [BEZIER_USE_DDA]: Use it.

c2fa51d9

2021-07-24T20:32:16

Fix some `cppcheck` warnings. * src/bzip2/ftbzip2.c (ft_bzip2_file_skip_output), src/gzip/ftgzip.c (ft_gzip_file_skip_output): Reduce scope of `delta`. * src/psaux/psintrp.c, src/psaux/psintrp.h (cf2_interpT2CharString): Add `const` to `buf` parameter. * src/raster/ftraster.c (DelOld): Add `const` to `profile` parameter. (Vertical_Sweep_Span): Reduce scope of `target`. (FT_Outline_Get_CBox): Reduce scope of `xMin`, `xMax`, `yMin`, `yMax`. * src/smooth/ftgrays.c (gray_render_conic): Reduce scope of `split`. (gray_sweep, gray_sweep_direct): Reduce scope of `area`. * src/tools/apinames.c (names_dump) <OUTPUT_WATCOM_LBC>: Reduce scope of `temp`.

357b353c

2021-07-16T11:12:13

* src/smooth/ftgrays.c: Fix compilation if `FT_LONG64` is undefined. The code assumed that if `__SSE2__` is defined, then 64-bit integer types are available. This is not the case apparently for certain multilib compiler targets like 'x86_32.x86' used by Gentoo. This patch fixes the issue by disabling the special code path when 64-bit integer types are not available. Fixes #1071.

552fc97f

2021-07-16T07:49:20

[smooth] Minor fixes. * src/smooth/ftgrays.c (gray_render_conic): Move variable and structure declarations to beginning of function. Inspite of C99 compliance we still do this for the sake of backward compatibility. This also avoids a shadowing declaration of `count`. (gray_convert_glyph_inner): Fix typo.

93771d61

2021-07-16T07:40:56

Formatting and ChangeLog additions for previous commits.

c37c0873

2021-07-15T11:33:16

Guard inclusion of emmintrin.h Guard inclusion of emmintrin.h with "#ifdef __SSE2__". The gcc version of this header, xmmintrin.h, and mmintrin.h check that the appropriate defines are set before defining anything (are internally guarded). However the clang versions of these includes are not internally guarded. As a result of this, externally guard the inclusion of these headers.

56cc2ad4

2021-06-19T10:26:53

[smooth] Implement Bezier quadratic arc flattenning with DDA Benchmarking shows that this provides a very slighty performance boost when rendering fonts with lots of quadratic bezier arcs, compared to the recursive arc splitting, but only when SSE2 is available, or on 64-bit CPUs. On a 2017 Core i5-7300U CPU on Linux/x86_64: ./ftbench -p -s10 -t5 -cb .../DroidSansFallbackFull.ttf Before: 4.033 us/op (best of 5 runs for all numbers) After: 3.876 us/op ./ftbench -p -s60 -t5 -cb .../DroidSansFallbackFull.ttf Before: 13.467 us/op After: 13.385 us/op

86b9c934

2021-06-19T11:18:40

[smooth] Minor speedup to smooth rasterizer This speeds up the smooth rasterizer by avoiding a conditional branches in the hot path. Namely: - Define a fixed "null cell" which will be pointed to whenever the current cell is outside of the current target region. This avoids a "ras.cell != NULL" check in the FT_INTEGRATE() macro. - Also use the null cell as a sentinel at the end of all ycells[] linked-lists, by setting its x coordinate to INT_MAX. This avoids a 'if (!cell)' check in gray_set_cell() as well. - Slightly change the worker struct fields to perform a little less operations during rendering. Example results (on a 2013 Corei5-3337U CPU) out/ftbench -p -s10 -t5 -bc /usr/share/fonts/truetype/droid/DroidSansFallbackFull.ttf Before: 5.472 us/op After: 5.275 us/op out/ftbench -p -s60 -t5 -bc /usr/share/fonts/truetype/droid/DroidSansFallbackFull.ttf Before: 17.988 us/op After: 17.389 us/op

1e0cef9e

2021-06-24T00:19:50

[smooth, raster] Fix up and align error codes. FT_Render_Glyph picked up FAILURE or 1 returned from the raster function, which became a confusing error code. Instead, return Raster_Overflow in the unlikely event that banding does not help or another meaningful error. * src/smooth/ftgrays.c (gray_convert_glyph_inner, gray_convert_glyph): Use Raster_Overflow when the rendering pool is exhausted and return it if banding does not help. (gray_raster_render): Use Smooth_Err_Ok. * src/raster/ftraster.c (Render_Single_Pass): Return Raster_Overflow if banding does not help or another error code.

d8ac180c

2021-06-23T23:32:02

[smooth, raster] Remove synonymous error macros. * src/smooth/ftgays.c [STANDALONE_]: s/ErrRaster_/Smooth_Err_/. (gray_convert_glyph_inner): Updated accordingly. * src/raster/ftraster.c [STANDALONE_]: Do not abbreviate error macros. (New_Profile, End_Profile, Insert_Y_Turn, Line_Up, Bezier_Up, Decompose_Curve, Draw_Sweep, Render_Single_Pass, ft_black_render): Updated accordingly.

2d3f5dd2

2021-05-12T17:24:35

* src/smooth/ftgrays.c (FT_MAX_GRAY_SPANS): Increase from 10 to 16. Ten was barely enough for two slanted stems. Sixteen can actually fit a bit more complicated scanlines.

c653b8d2

2021-05-12T16:17:21

* src/smooth/ftgrays.c (FT_GRAY_SET): Adjust for better code.

8f43d324

2021-05-12T00:04:59

[smooth] Faster bitmap sweeping. Selecting the fill rule or checking the direct mode each time we call `gray_hline' is sub-optimal. This effectively splits the direct mode into a separate code path while inlining `gray_hline' and saving 5-7% of rendering time. * src/smooth/ftgrays.c (gray_hline): Eliminated in favor of... (FT_FILL_RULE, FT_GRAY_SET): ... these new macros... (gray_sweep): ... inlined here. (gray_sweep_direct): New function that handles the direct span buffer. (gray_TWorker): Remove the span buffer. (gray_raster_render, gray_convert_glyph): Updated.

b0702645

2021-05-10T22:06:01

* src/smooth/ftgrays.c (gray_hline): Simplify even-odd computations. It is too bad the even-odd rule is not used much.

fb9bf2ef

2021-03-15T22:33:17

* src/smooth/ftgrays.c (gray_set_cell): Refactor to fix VC++ warning.

80bda804

2021-03-11T22:40:19

[smooth] Reduce copying during integration phase. We now record `cover' and `area' directly into the linked list. This makes rendering faster by 10% or even more at larger sizes. * src/smooth/ftgrays.c (FT_INTEGRATE): Write directly. (gray_TWorker): Add direct cell reference and remove unused fields. (gray_set_cell): Consolidate the linked list management and pointers. (gray_convert_glyph, gray_convert_glyph_inner): Updated.

d5b7de55

2021-03-11T22:08:45

* src/smooth/ftgrays.c (FT_INTEGRATE): New convenience macro. (gray_render_line, gray_render_scanline): Use it.

85168499

2021-03-09T22:14:44

* src/smooth/ftgrays.c (gray_render_line): Rearrange conditionals. These produce faster or more optimizable code.

b6e8a712

2021-01-17T07:18:48

Update all copyright notices.

53be1753

2020-07-28T07:33:40

Fix `-Wformat' compiler warnings. * src/*: Fix format specifiers. * builds/unix/ftsystem.c (FT_Stream_Open): Ditto.

16586859

2020-06-13T21:15:45

Remove redundant inclusion of `ft2build.h'. * */*: Remove `#include <ft2build.h>' where possible. * include/freetype/freetype.h: Remove cpp error about missing inclusion of `ft2build.h'.

e1339133

2020-06-08T13:31:55

Make macros for header file names optional. We no longer have to take care of the 8.3 file name limit; this allows us (a) to introduce longer, meaningful file names, and (b) to avoid macro names in `#include' lines altogether since some compilers (most notably Visual C++) doesn't support this properly. */*: Replace #include FOO_H with #include <freetype/foo.h> or something similar. Also update the documentation.

e5038be7

2020-01-19T17:05:19

Update all copyright notices.

e7ac9288

2019-06-13T00:17:36

[smooth] Restore the span buffering for direct mode only. The buffer size FT_MAX_GRAY_SPANS is set to 10 spans, which should be enough to cover the entire scanline for simple glyphs in most cases: each slightly slanted edge needs up to two spans, plus a filling span in-between. This is not new, we used to do it before cb4388783cecc. * src/smooth/ftgrays.c (gray_TWorker): Add `spans' and `num_spans'. (gray_hline, gray_sweep): Implement the span buffering. (gray_raster_render): Use negative `num_spans' to avoid the direct mode.

bdac4cbe

2019-06-12T21:58:35

Rendering considerations.

9159128a

2019-05-29T07:45:54

Silence gcc 7's fall-through warnings in `switch' blocks. Instead of an intentionally missing `break' statement there must be a comment line containing `fall through' (and nothing else) right before the next `case' statement. See https://stackoverflow.com/questions/45129741/gcc-7-wimplicit-fallthrough-warnings-and-portable-way-to-clear-them

141e3173

2019-05-20T23:09:59

Rendering considerations.

bc3b5281

2019-05-08T22:08:40

[smooth] Faster fractions. * src/smooth/ftgrays.c (SUBPIXELS): Replace with... (FRACT): A fractional coordinate macro to use in... (gray_render_line, gray_render_scanline): ... here.

81725773

2019-05-04T08:11:20

* src/smooth/ftgrays.c (gray_render_line): Small shortcut.

300458eb

2019-05-03T23:16:42

Miscellaneous macro updates. * src/base/ftoutln.c (SCALED): Updated. * src/smooth/ftgrays.c (SCALED): Ditto. (FLOOR, ROUND, CEILING): Removed. * src/psaux/psfixed.h (cf2_fracToFixed): Updated.

2ea511ee

2019-04-29T22:49:15

[smooth] Simplify cubic Bézier flattening. The previous implementation is correct but it is too complex. The revised algorithm is based on the fact that each split moves the control points closer to the trisection points on the chord. The corresponding distances are good surrogates for the curve deviation from the straight line. This cubic flattening algorithm is somewhat similar to the conic algorithm based the distance from the control point to the middle of the chord. The cubic distances, however, decrease less predictably but are easy enough to calculate on each step. * src/smooth/ftgrays.c (gray_render_cubic): Replace the split condition.

80475ede

2019-04-26T21:53:00

[smooth] Bithacks and cosmetics. * src/smooth/ftgrays.c (gray_record_cell, gray_set_cell, gray_hline, gray_render_conic, gray_convert_glyph_inner): Updated.

7a81b63a

2019-04-25T22:06:33

Optimize Bézier bisections. * src/raster/ftraster.c (Split_Conic, Split_Cubic): Use shifts and refactor. * src/smooth/ftgrays.c (gray_split_conic, gray_split_cubic): Ditto. * src/base/ftstroke.c (ft_conic_split, ft_cubic_split): Ditto. * src/base/ftbbox.c (cubic_peak): Use shifts.

1f271751

2019-04-11T23:48:21

[smooth] Fix segfault in direct mode (#56092). * src/base/ftoutln.c (FT_Outline_Render): Set missing clip_box for direct mode. * src/smooth/ftgrays.c (gray_raster_render): Use it.

75859970

2019-02-23T10:07:09

Update all copyright notices.

f686ad46

2019-01-22T20:31:44

Update copyright years.

afa043de

2018-12-25T22:44:05

Fix links (mostly http -> https).

9817571c

2018-10-03T08:04:55

[ftgrays] Fix typo in stand-alone mode (#54771). * src/smooth/ftgrays.c (FT_THROW) [STANDALONE_ && FT_DEBUG_LEVEL_TRACE]: Fix call to `FT_ERR_CAT'.

a0dd16fb

2018-08-15T18:13:17

Don't use `trace_' prefix for FT_COMPONENT arguments. * include/freetype/internal/ftdebug.h (FT_TRACE_COMP, FT_TRACE_COMP_): New auxiliary macros to add `trace_' prefix. (FT_TRACE): Use `FT_TRACE_COMP'. */* (FT_COMPONENT): Updated.

e16bfbec

2018-08-09T22:18:00

[raster, smooth] Reinstate bitmap size limits. This again moves outline and bitmap size checks one level up. * src/base/ftoutln.c (FT_Outline_Render): Explicitly reject enormous outlines. * src/raster/ftrend1.c (ft_raster1_render): Reject enormous bitmaps and, therefore, outlines that require them. * src/smooth/ftsmooth.c (ft_smooth_render_generic): Ditto. * src/raster/ftraster.c (ft_black_render): Remove outline size checks. * src/smooth/ftgrays.c (gray_raster_render): Ditto. [STANDALONE]: Remove `FT_Outline_Get_CBox' copy.

f60c98fe

2018-08-08T18:15:53

[smooth] Improve tracing. * src/smooth/ftgrays.c (gray_convert_glyph_inner): Only use tracing if called the first time. (gray_convert_glyph): Updated.

ca4e707a

2018-06-06T08:18:23

[smooth, raster] Limit bitmap size (#54019). * src/raster/ftraster.c [STANDALONE] (FT_Outline_Get_CBox): Add function. [!STANDALONE]: Include FT_OUTLINE_H. (ft_black_render): Compute CBox and reject glyphs larger than 0xFFFF x 0xFFFF. * src/smooth/ftgrays.c (gray_raster_render): Reject glyphs larger than 0xFFFF x 0xFFFF.

80ac3645

2018-06-03T18:31:58

* src/smooth/ftgrays.c (gray_convert_glyph): Remove unused variables.

9ac9060d

2018-06-03T09:01:17

[GSoC] src/*.*: Convert block comments to `light' style. This monster commit was created by applying Nikhil's scripts `docconverter.py' and `markify.py' to all C header and source files, followed up by minor manual clean-up. No change in functionality, of course. I used commit f7419907bc6044b9b7057f9789866426c804ba82 from https://github.com/nikramakrishnan/freetype-docs.git.

ae248034

2018-06-02T21:42:44

[smooth] Attempt to mitigate bug #54019. The robust rendering of estra large glyphs came with unbearable cost. The old way of bisecting should fail but fail faster. * src/smooth/ftgrays.c (gray_convert_glyph): Switch back to bisecting in y-direction.

95149592

2018-05-02T20:27:48

Remove FT_CONFIG_OPTION_PIC and related code. */* [FT_CONFIG_OPTION_PIC]: Remove all code guarded by this preprocessor symbol. */*: Replace `XXX_GET' macros (which could be either a function in PIC mode or an array in non-PIC mode) with `xxx' arrays. * include/freetype/internal/ftpic.h, src/autofit/afpic.c, src/autofit/afpic.h, src/base/basepic.c, src/base/basepic.h, src/base/ftpic.c, src/cff/cffpic.c, src/cff/cffpic.h, src/pshinter/pshpic.c, src/pshinter/pshpic.h, src/psnames/pspic.c, src/psnames/pspic.h, src/raster/rastpic.c, src/raster/rastpic.h, src/sfnt/sfntpic.c, src/sfnt/sfntpic.h, src/smooth/ftspic.c, src/smooth/ftspic.h, src/truetype/ttpic.c, src/truetype/ttpic.h: Removed.

63aaf89c

2018-02-17T10:34:47

s/sub-pixel/subpixel/.

0a0c2256

2018-01-02T09:33:57

Update copyright year.

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.

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.

761d9e41

2017-02-22T22:41:36

* src/smooth/ftgrays.c (gray_hline): Improve code.

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.

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.

kc3-lang/freetype/src/smooth/ftgrays.c

src/smooth/ftgrays.c

Log