src/base/ftbitmap.c


Log

Author Commit Date CI Message
Werner Lemberg 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.
Werner Lemberg 29f05fd0 2018-07-04T11:49:47 Fix 32bit build warnings (#54239). * src/base/ftbitmap.c (FT_Bitmap_Blend): Add casts to avoid signed vs. unsigned comparisons. * srb/sfnt/ttcolr.c (tt_face_get_colr_layer): Ditto.
Werner Lemberg da846919 2018-06-17T09:30:05 [base] Add tracing for `FT_Bitmap_Blend'. * include/freetype/internal/fttrace.h (trace_bitmap): New enumeration. * src/base/ftbitmap.c (FT_COMPONENT): Define. (FT_Bitmap_Blend): Add `FT_TRACE5' calls.
Werner Lemberg 9d8e6c29 2018-06-16T10:11:58 * src/base/ftbitmap.c (FT_Bitmap_Blend): Avoid integer overflow.
Werner Lemberg 68bc56f8 2018-06-16T09:39:29 Add `FT_Bitmap_Blend' API. Still missing: Support for negative bitmap pitch and subpixel offset of source bitmap. * include/freetype/ftbitmap.h, src/base/ftbitmap.c (FT_Bitmap_Blend): New function.
Werner Lemberg 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.
Alexei Podtelezhnikov 3b88576b 2018-04-22T17:22:35 [base] Fix bitmap emboldening. Bug introduced after release 2.8. * src/base/ftbitmap.c (ft_bitmap_assure_buffer): We use `FT_QALLOC_MULT', which doesn't zero out the buffer. Adjust the bitmap copying code to take care of this fact.
Werner Lemberg c2e2a8e5 2018-04-22T17:13:50 Revert "[base] Fix bitmap copying where the new pitch is smaller." This reverts commit c0f1adedcfaad4f7d2fe912ff4b2933845d61d93.
Werner Lemberg c0f1aded 2018-04-22T11:44:24 [base] Fix bitmap copying where the new pitch is smaller. * src/base/ftbitmap.c (ft_bitmap_assure_buffer): Handle it.
Werner Lemberg 0a0c2256 2018-01-02T09:33:57 Update copyright year.
Werner Lemberg 14cd0734 2017-12-27T08:59:46 Fix compiler warnings. * src/base/ftbitmap.c (ft_bitmap_assure_buffer): Make `pitch' and `new_pitch' unsigned. * src/base/ftpsprop.c: Include FT_INTERNAL_POSTSCRIPT_PROPS_H.
Werner Lemberg 2c048a8a 2017-12-11T19:24:30 Fix compiler warning (#52640). * src/base/ftbitmap.c (ft_bitmap_assure_buffer): Remove unused variable.
Werner Lemberg e1090c60 2017-12-08T09:54:36 Fix access to uninitalized memory (#52613). Also reported as https://bugs.chromium.org/p/chromium/issues/detail?id=791317 * src/base/ftbitmap.c (ft_bitmap_assure_buffer): If increasing the bitmap size needs a larger bitmap buffer, assure that the new memory areas are initialized also.
Werner Lemberg 87ddad20 2017-12-04T20:43:30 Update or fix links to use the https protocol instead of http.
Werner Lemberg a3dd6d99 2017-09-05T23:02:04 Fix multiple calls of `FT_Bitmap_Convert'. The documentation of `FT_Bitmap_Convert' says that multiple calls do proper reallocation of the target FT_Bitmap object. However, this failed for the sequence non-empty bitmap empty bitmap non-empty bitmap Reason was that `FT_Bitmap_Convert' only reallocated the bitmap buffer if it became too small; it didn't make the buffer smaller. For an empty bitmap following a non-empty one, only the buffer dimension got set to zero, without deallocation. If the next call was a non-empty buffer again, an assertion in `ft_mem_qrealloc' was triggered. * src/base/ftbitmap.c (FT_Bitmap_Convert): Always reallocate target buffer to the correct size. * docs/CHANGES: Document it.
Alexei Podtelezhnikov f0898b92 2017-08-25T21:40:01 Swap `ALLOC_MULT' arguments (#51833). * src/base/ftbitmap.c (ft_bitmap_assure_buffer): Updated. * src/winfonts/winfnt.c (FNT_Load_Glyph): Updated. * src/raster/ftrend1.c (ft_raster1_render): Updated.
Werner Lemberg 563ae780 2017-01-04T20:16:34 Update copyright year.
Werner Lemberg 4441f7b2 2016-12-26T17:08:17 Replace `foo == NULL' and `foo != NULL' with `!foo' and `foo', resp. Other minor formatting.
Werner Lemberg 32950391 2016-02-15T12:54:40 Whitespace.
Werner Lemberg 9adeab64 2016-01-13T11:54:10 Update copyright year.
Werner Lemberg eee7d8ba 2015-03-10T11:15:15 [base] Rename `FT_Bitmap_New' to `FT_Bitmap_Init'. * include/ftbitmap.h, src/base/ftbitmap.c: Implement it. Update all callers. * docs/CHANGES: Updated.
Werner Lemberg 2e814fc0 2015-02-16T20:05:08 More minor signedness warning fixes. * src/base/ftbbox.c, src/base/ftbitmap.c, src/base/fttrigon.c, src/base/ftutil.c: Apply.
Werner Lemberg f57fc59e 2015-01-17T20:41:43 Run `src/tools/update-copyright'.
Werner Lemberg 0098d550 2014-12-07T11:03:57 Uppercase all hex digits for orthogonality.
Werner Lemberg 644d6fab 2014-11-21T07:28:50 * src/base/ftbitmap.c (FT_Bitmap_Convert): Improve. This commit completes argument checks and adds support for different flow directions.
Werner Lemberg 6de76174 2014-11-21T06:05:49 * src/base/ftbitmap.c (FT_Bitmap_Copy): Improve. This commit adds argument checks and support for different flow directions.
Werner Lemberg 1e6e1b83 2014-11-20T21:07:56 * src/base/ftbitmap.c (FT_Bitmap_New): Check argument.
Werner Lemberg b3500af7 2014-11-19T21:28:21 Change some fields in `FT_Bitmap' to unsigned type. This doesn't break ABI. * include/ftimage.h (FT_Bitmap): Make `rows', `width', `num_grays', `pixel_mode', and `palette_mode' unsigned types. * src/base/ftbitmap.c: Updated. (FT_Bitmap_Copy): Fix casts. * src/cache/ftcsbits.c, src/raster/ftraster.c, src/sfnt/pngshim.c: Updated.
Werner Lemberg df485774 2014-11-19T21:21:23 Make `FT_Bitmap_Convert' correctly handle negative `pitch' values. * src/base/ftbitmap.c (FT_Bitmap_Convert): Always use positive value for the pitch while copying data. Correctly set pitch sign in target bitmap.
Werner Lemberg d6061212 2014-11-19T21:13:23 Minor code improvement in `FT_Bitmap_Embolden'. * src/base/ftbitmap.c (FT_Bitmap_Embolden) <FT_PIXEL_MODE_GRAY[24]>: Fix thinko.
Werner Lemberg 8d05486e 2014-11-19T21:07:59 Minor documentation improvements and whitespace.
Alexei Podtelezhnikov 237c0abf 2014-11-19T22:10:29 Trailing space.
Alexei Podtelezhnikov 90be4b63 2014-08-08T22:27:10 * src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Refactor.
Werner Lemberg 3939c200 2014-07-17T17:24:22 Minor.
Alexei Podtelezhnikov 1183cd4e 2014-07-14T22:30:55 [base] Further clean up color bitmap conversion. * src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Stop using FT_MulFix and FT_DivFix since all calculations fit into 32 bits.
Alexei Podtelezhnikov 35576bf0 2014-07-11T22:40:34 [base] Clean up bitmap conversion. * src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Use appropriate FT_DivFix and remove superfluous upscaling.
Sean McBride 7be2a94a 2014-02-08T13:55:38 Fix clang static analyzer and compiler warnings. * src/autofit/afhints.c (af_glyph_hints_align_weak_points), src/autofit/afloader (af_loader_load_g) <FT_GLYPH_FORMAT_COMPOSITE>, src/base/ftcalc.c (FT_MSB), src/base/ftoutln.c (FT_Outline_Decompose), src/bdf/bdfdrivr.c (bdf_interpret_style), src/cff/cffparse.c (cff_parse_integer), src/cid/cidparse.c (cid_parser_new), src/pfr/pfrload.c (pfr_phy_font_load), src/raster/ftraster.c (Decompose_Curve), src/sfnt/sfdriver.c (sfnt_get_ps_name), src/sfnt/ttcmap.c (tt_cmap12_next, tt_cmap13_next), src/smooth/ftgrays.c (gray_hline): Remove dead code. * src/autofit/afmodule.c (af_property_get_face_globals, af_property_set, af_property_get), src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Make functions static. * src/base/ftobjs.c (ft_remove_renderer): Protect against library == NULL. (ft_property_do): Make function static. * src/base/ftrfork.c: Include `ftbase.h'. * src/sfnt/ttsbit.c (tt_face_load_sbix_image) [!FT_CONFIG_OPTION_USE_PNG], src/type1/t1gload.c (T1_Compute_Max_Advance): Avoid compiler warning. * src/truetype/ttinterp.c (TT_New_Context): Reduce scope of variable.
Werner Lemberg cc34efca 2013-07-31T22:55:50 Minor.
suzuki toshiya f2e7f1e1 2013-07-30T13:32:57 2013-07-30 Behdad Esfahbod <behdad@google.com> Prevent division by zero by a transparent color. * src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Return 0 immediately, when alpha channel is zero.
Werner Lemberg 45392b77 2013-06-05T13:43:20 Fix compiler warnings. * include/freetype/internal/ftmemory.h: Decorate memory allocation macros with `FT_Long' where appropriate. Remove duplicate of FT_MEM_QRENEW_ARRAY definition. * src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Use cast. * src/base/ftobjs.c: Add warning disabling pragma for MSVC while including `md5.c'. * src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdESC>: Add cast. * src/sfnt/ttsbit.c (tt_sbit_decoder_load_compound): Fix casts. (tt_sbit_decoder_load_bitmap): Beautification. * src/smooth/ftsmooth.c (ft_smooth_render_generic): Initialize variables (earlier). * src/truetype/ttgload.c (TT_Process_Simple_Glyph): Pacify compiler. * src/truetype/ttgxvar.c (TT_Get_MM_Var): Use unsigned constants where appropriate. * src/type1/t1load.c (T1_Get_MM_Var): Ditto.
Behdad Esfahbod 760d342d 2013-05-29T11:36:18 Add support for color embedded bitmaps (eg. color emoji). A new load flag, FT_LOAD_COLOR, makes FreeType load color embedded-bitmaps, following this draft specification https://color-emoji.googlecode.com/git/specification/v1.html which defines two new SFNT tables, `CBDT' and `CBLC' (named and modeled after `EBDT' and `EBLC', respectively). The color bitmaps are stored in the new FT_PIXEL_MODE_BGRA format to represent BGRA pre-multiplied sRGB images. If PNG support is available, PNG color images as defined in the same proposed specification are supported also. Note that color bitmaps are converted to grayscale if client didn't ask for color. * builds/unix/configure.raw: Search for libpng. Add `--without-png' option. * devel/ftoption.h, include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_PNG): New macro. * include/freetype/freetype.h (FT_LOAD_COLOR): New load flag. * include/freetype/ftimage.h (FT_Pixel_Mode): Add `FT_PIXEL_MODE_BGRA'. * include/freetype/tttags.h (TTAG_CBDT, TTAG_CBLC): New tags. * src/base/ftbitmap.c (FT_Bitmap_Embolden): Updated. (ft_gray_for_premultiplied_srgb_bgra): New function. (FT_Bitmap_Convert): Handle FT_PIXEL_MODE_BGRA. * src/sfnt/pngshim.c, src/sfnt/pngshim.h: New files. * src/sfnt/sfnt.c: Include `pngshim.c'. * src/sfnt/ttsbit.c: Include FT_BITMAP_H and `pngshim.h' (tt_face_load_eblc): Load `CBLC'. (tt_sbit_decoder_init): Load `CBDT'. (tt_sbit_decoder_alloc_bitmap): Pass load flags to select between color and grayscale bitmaps. Set `num_grays'. This is used by `ftview' to choose the blending algorithm. (tt_sbit_decoder_load_byte_aligned, tt_sbit_decoder_load_bit_aligned, tt_sbit_decoder_load_compound, tt_sbit_decoder_load_image): Pass load flag. s/write/pwrite/. Don't call `tt_sbit_decoder_alloc_bitmap'. Updated. (tt_sbit_decoder_load_png) [FT_CONFIG_OPTION_USE_PNG]: New function. (tt_sbit_decoder_load_bitmap): Pass load flag. Handle new glyph formats 17, 18, and 19. Call `tt_sbit_decoder_alloc_bitmap'. Flatten color bitmaps if necessary. (tt_face_load_sbit_image): Updated. * src/sfnt/rules.mk (SFNT_DRV_SRC): Add `pngshim.c'. * docs/CHANGES: Updated.
Werner Lemberg 059bc335 2013-03-14T10:27:35 */*: Use `FT_THROW'. This is essentially a mechanical conversion, adding inclusion of `FT_INTERNAL_DEBUG_H' where necessary, and providing the macros for stand-alone compiling modes of the rasterizer modules. To convert the remaining occurrences of FT_Err_XXX and friends it is necessary to rewrite the code. Note, however, that it doesn't harm if some cases are not handled since FT_THROW is a no-op.
suzuki toshiya 1749d8bc 2012-01-17T02:00:24 Remove trailing spaces.
Werner Lemberg dfb475ab 2011-11-14T20:29:13 Fix compiler warning.
Werner Lemberg 9c98fbf6 2011-10-01T09:25:55 Handle some border cases. * include/freetype/config/ftstdlib.h (FT_USHORT_MAX): New macro. * src/base/ftbitmap.c (FT_Bitmap_Convert): Protect against invalid value of `target->rows'. * src/psaux/t1decode.c (t1_decoder_parse_charstrings): Add check for flex start. * src/raster/ftrend1.c (ft_raster1_render): Check `width' and `height'. * src/truetype/ttgxvar.c (TT_Vary_Get_Glyph_Deltas): Protect against invalid values in `localpoints' array.
suzuki toshiya 65a44988 2011-06-15T01:44:24 [base] Fix g++4.6 compiler warnings in src/base/*.c. Passing uninitialized pointer to the buffer allocator is not problematic theoretically (as far as the returned pointer is checked before writing), but g++4.6 dislikes it and warns by -Wuninitialized. Initialize them by NULL. * src/base/ftobjs.c (FT_Stream_New): Init `stream'. (new_memory_stream): Ditto. (FT_New_GlyphSlot): Init `slot'. (FT_CMap_New): Init `cmap'. (open_face_PS_from_sfnt_stream): Init `sfnt_ps'. (Mac_Read_POST_Resource): Init `pfb_data'. (Mac_Read_sfnt_Resource): Init `sfnt_data'. * src/base/ftrfork.c (FT_Raccess_Get_DataOffsets): Init `offsets_internal' and `ref'. (raccess_guess_darwin_hfsplus): Init `newpath'. (raccess_guess_darwin_newvfs): Ditto. * src/base/ftbitmap.c (ft_bitmap_assure_buffer): Init `buffer'. * src/base/ftstroke.c (FT_Stroker_New): Init `stroker'.
suzuki toshiya e866cf3f 2009-08-01T00:32:06 Improve bitmap size or pixel variables for 16-bit systems.
Werner Lemberg a86f1b96 2009-01-06T09:07:22 FT_Bitmap_Convert: Support missing pixel modes. * src/base/ftbitmap.c (FT_Bitmap_Convert): Handle FT_PIXEL_MODE_LCD and FT_PIXEL_MODE_LCD_V. Problem reported by Chi Nguyen <chint@necsv.com>.
Werner Lemberg c8c4cc83 2008-12-17T10:50:31 * include/freetype/ftsynth.h, src/basae/ftsynth.c: Move FT_GlyphSlot_Own_Bitmap to... * include/freetype/ftbitmap.h, src/base/ftbitmap.c: These files. * docs/CHANGES: Document it.
David Turner 1dcb4448 2007-04-06T08:19:04 fixed a memory buffer overwrite bug. Damn !!
Werner Lemberg 24fd93d6 2007-03-29T11:56:21 formatting
David Turner 3f539694 2007-03-28T14:53:40 fixing bug in the padding zero-ing of the bitmap emboldener
Werner Lemberg 27cf9de1 2007-01-13T07:34:23 formatting, copyright years
David Turner e3654532 2007-01-13T00:19:18 * src/base/ftbitmap.c: fixing memory stomping bug in the bitmap embolderner when the pitch of the source bitmap is *much* larger than its width * src/truetype/ttinterp.c: fixing aliasing-related compilation warning
David Turner 9ca78256 2006-05-02T09:00:29 * include/freetype/internal/ftmemory.h, src/base/ftbitmap.c, src/base/ftmac.c, src/base/ftrfork.c, src/lzw/ftzopen.c, src/raster/ftrend1.c, src/sfnt/ttpost.c, src/truetype/ttgxvar.c, src/type42/t42parse.c, src/winfonts/winfnt.c: hardening the code against out-of-bounds conditions when allocating arrays. This is for the cases where FT_NEW_ARRAY and FT_RENEW_ARRAY are not used already. Introducing the new FT_ALLOC_MULT and FT_REALLOC_MULT macros.
Werner Lemberg be3c9814 2006-01-27T14:16:16 Formatting, copyright years.
David Turner 6a681fa8 2006-01-27T12:11:22 * src/autofit/afwarp.c: simple #ifdef to prevent compilation when the warp hinter isn't active (it shouldn't, still experimental) * Jamfile, include/freetype/config/ftmodule.h: removed "gxvalid" and "otvalid" from the list of modules that are linked statically to a given FreeType library. Functionality has been moved to the "ftvalid" CVS module. note also that current Make-based build system still compiles the modules though... * include/freetype/config/ftoption.h: added FT_STRICT_ALIASING, which controls the definitions of the memory management functions to avoid warnings with recent versions of GCC. this macro is only here to be disabled, in case we detect problems with the new scheme. NOTE: disable macro to use the memory debugger. this will be fixed later !!
David Turner c5621628 2005-06-30T11:46:46 * src/sfnt/ftbitmap.c, src/truetype/ttgload.c, src/sfnt/ttcmap.c: removing compiler warnings (Visual C++ /W4) * Jamfile, src/otvalid/{otvcommn.h,otvgdef.c,otvgpos.c,otvgsub.c, otvjstf.c}: modified the code to use a different pre-processor trick to implement the OTV_NEST1, OTV_NEST2 and OTV_NEST3 macros. The code now compiles neatly with Visual C++. The 'otvalid' module has been put in the Jamfile build again.
Werner Lemberg 38e82be1 2005-05-30T19:22:44 * include/freetype/ftbitmap.h (FT_Bitmap_Embolden): Minor documentation improvements. * include/freetype/ftoutln.h (FT_Outline_Embolden): Fix typos. * src/base/ftbitmap.c (FT_Bitmap_Embolden): Add support for bitmap of pixel_mode FT_PIXEL_MODE_GRAY2 or FT_PIXEL_MODE_GRAY4. If xstr is larger than 8 and bitmap is of pixel_mode FT_PIXEL_MODE_MONO, set xstr to 8 instead of returning error.
Werner Lemberg 71d76281 2005-05-30T07:54:20 * src/base/ftbitmap.c (FT_Bitmap_Embolden): Fix emboldening bitmap of mode FT_PIXEL_MODE_GRAY. Also add support for mode FT_PIXEL_MODE_LCD and FT_PIXEL_MODE_LCD_V. (ft_bitmap_assure_buffer): FT_PIXEL_MODE_LCD and FT_PIXEL_MODE_LCD_V should have ppb (pixel per byte) 1. Zero the padding when there's no need to allocate memory. * src/base/ftsynth.c (FT_GlyphSlot_Embolden): Handle slot->advance too. More suited emboldening strength.
Werner Lemberg c162eac5 2005-05-28T21:52:37 * src/base/ftbitmap.c (FT_Bitmap_Embolden): Handle negative pitch. Handle FT_PIXEL_MODE_GRAY with num_gray != 256. Improve speed for FT_PIXEL_MODE_GRAY. (ft_bitmap_assure_buffer): Accept FT_PIXEL_MODE_LCD and FT_PIXEL_MODE_LCD_V.
Werner Lemberg afb2ba57 2005-05-25T05:51:01 * docs/CHANGES: Updated. * include/freetype/ftbitmap.h (FT_Bitmap_Embolden): New declaration. * include/freetype/ftoutln.h (FT_Outline_Embolden): New declaration. * src/base/ftbitmap.c (ft_bitmap_assure_buffer): New auxiliary function. (FT_Bitmap_Embolden): New function. * src/base/ftoutln.c (FT_Outline_Embolden): New function. * src/base/ftsynth.c: Don't include FT_INTERNAL_CALC_H and FT_TRIGONOMETRY_H but FT_BITMAP_H. (FT_GlyphSlot_Embolden): Use FT_Outline_Embolden or FT_Bitmap_Embolden.
Werner Lemberg b9ee7370 2005-05-20T21:52:19 * docs/CHANGES: Updated. * src/base/ftbitmap.c: Don't include FT_FREETYPE_H and FT_IMAGE_H but FT_BITMAP_H. (FT_Bitmap_Copy): New function (from ftglyph.c). * include/freetype/ftbitmap.h (FT_Bitmap_Copy): New public definition. * src/base/ftglyph.c: Include FT_BITMAP_H. (ft_bitmap_copy): Move to ftbitmap.c. (ft_bitmap_glyph_init): Remove `memory' variable. Create new bitmap object if FT_GLYPH_OWN_BITMAP isn't set. (ft_bitmap_glyph_copy): Use FT_Bitmap_Copy. (ft_bitmap_glyph_done): Use FT_Bitmap_Done. (ft_outline_glyph_init): Use FT_Outline_Copy. * src/base/ftoutln.c (FT_Outline_Copy): Handle source == target. (FT_Outline_Done_Internal): Check for valid `memory' pointer. (FT_Outline_Translate, FT_Outline_Reverse, FT_Outline_Render, FT_Outline_Transform): Check for valid `outline' pointer. * src/base/ftobjs.c (FT_New_GlyphSlot): Prepend glyph slot to face->glyph, otherwise a new second glyph slot cannot be created. (FT_Done_GlyphSlot): Fix memory leak. (FT_Open_Face): Updated -- face->glyph is already managed by FT_New_GlyphSlot. * src/type42/t42objs.c (T42_GlyphSlot_Done): Updated.
Werner Lemberg 0358b21d 2005-02-10T16:59:37 Formatting.
David Turner e99b9a99 2005-02-10T16:11:29 * src/base/ftbitmap.c (FT_Bitmap_Convert): small improvements to the conversion function (mainly stupid optimization, because I like these... shame on me) * src/base/Jamfile: adding ftbitmap.c to the list of compiled files
Werner Lemberg 0f2a4157 2004-12-28T07:31:35 * src/base/ftbitmap.c (FT_Bitmap_Convert): Fix compiler warning.
Werner Lemberg f2438e1d 2004-12-14T16:01:29 * src/base/ftbitmap.c, include/freetype/ftbitmap.h: New files for handling various bitmap formats. * include/freetype/config/ftheader.h (FT_BITMAP_H): New macro. * src/base/rules.mk (BASE_EXT_SRC): Add ftbitmap.c. * src/bdf/bdfdrivr.c (BDF_Glyph_Load): Don't convert bitmaps to 8bpp but return them as-is. * docs/CHANGES: Mention new bitmap API. * include/freetype/ftchapter.s: Updated.