XFA: merge patch from CL 815103002

Update freetype to 2.5.4.

Put freetype into third_party directory, cleaning up header files.

Previously freetype header files are in core/src/fxge/freetype and core/include/thirdparties. There were also multiple fx_freetype.h.

This patch removes the additional Foxit wrapper to make further update easier.

Notice, for original freetype source code, the following files are modified and need to be updated accordingly in future update:

third_party/freetype/include/config/ftmodule.h
third_party/freetype/include/config/ftoption.h

BUG=407341
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/815103002

9 files changed, 3041 insertions, 0 deletions

diff --git a/third_party/freetype/src/smooth/Jamfile b/third_party/freetype/src/smooth/Jamfile
new file mode 100644
index 0000000000..a8496aa2c2
--- /dev/null
+++ b/third_party/freetype/src/smooth/Jamfile
@@ -0,0 +1,29 @@
+# FreeType 2 src/smooth Jamfile
+#
+# Copyright 2001 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
+SubDir  FT2_TOP $(FT2_SRC_DIR) smooth ;
+
+{
+  local  _sources ;
+
+  if $(FT2_MULTI)
+  {
+    _sources = ftgrays ftsmooth ftspic ;
+  }
+  else
+  {
+    _sources = smooth ;
+  }
+
+  Library  $(FT2_LIB) : $(_sources).c ;
+}
+
+# end of src/smooth Jamfile
diff --git a/third_party/freetype/src/smooth/ftgrays.c b/third_party/freetype/src/smooth/ftgrays.c
new file mode 100644
index 0000000000..9d37d64517
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftgrays.c
@@ -0,0 +1,2133 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftgrays.c                                                              */
+/*                                                                         */
+/*    A new `perfect' anti-aliasing renderer (body).                       */
+/*                                                                         */
+/*  Copyright 2000-2003, 2005-2014 by                                      */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* This file can be compiled without the rest of the FreeType engine, by */
+  /* defining the _STANDALONE_ macro when compiling it.  You also need to  */
+  /* put the files `ftgrays.h' and `ftimage.h' into the current            */
+  /* compilation directory.  Typically, you could do something like        */
+  /*                                                                       */
+  /* - copy `src/smooth/ftgrays.c' (this file) to your current directory   */
+  /*                                                                       */
+  /* - copy `include/ftimage.h' and `src/smooth/ftgrays.h' to the same     */
+  /*   directory                                                           */
+  /*                                                                       */
+  /* - compile `ftgrays' with the _STANDALONE_ macro defined, as in        */
+  /*                                                                       */
+  /*     cc -c -D_STANDALONE_ ftgrays.c                                    */
+  /*                                                                       */
+  /* The renderer can be initialized with a call to                        */
+  /* `ft_gray_raster.raster_new'; an anti-aliased bitmap can be generated  */
+  /* with a call to `ft_gray_raster.raster_render'.                        */
+  /*                                                                       */
+  /* See the comments and documentation in the file `ftimage.h' for more   */
+  /* details on how the raster works.                                      */
+  /*                                                                       */
+  /*************************************************************************/
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* This is a new anti-aliasing scan-converter for FreeType 2.  The       */
+  /* algorithm used here is _very_ different from the one in the standard  */
+  /* `ftraster' module.  Actually, `ftgrays' computes the _exact_          */
+  /* coverage of the outline on each pixel cell.                           */
+  /*                                                                       */
+  /* It is based on ideas that I initially found in Raph Levien's          */
+  /* excellent LibArt graphics library (see http://www.levien.com/libart   */
+  /* for more information, though the web pages do not tell anything       */
+  /* about the renderer; you'll have to dive into the source code to       */
+  /* understand how it works).                                             */
+  /*                                                                       */
+  /* Note, however, that this is a _very_ different implementation         */
+  /* compared to Raph's.  Coverage information is stored in a very         */
+  /* different way, and I don't use sorted vector paths.  Also, it doesn't */
+  /* use floating point values.                                            */
+  /*                                                                       */
+  /* This renderer has the following advantages:                           */
+  /*                                                                       */
+  /* - It doesn't need an intermediate bitmap.  Instead, one can supply a  */
+  /*   callback function that will be called by the renderer to draw gray  */
+  /*   spans on any target surface.  You can thus do direct composition on */
+  /*   any kind of bitmap, provided that you give the renderer the right   */
+  /*   callback.                                                           */
+  /*                                                                       */
+  /* - A perfect anti-aliaser, i.e., it computes the _exact_ coverage on   */
+  /*   each pixel cell.                                                    */
+  /*                                                                       */
+  /* - It performs a single pass on the outline (the `standard' FT2        */
+  /*   renderer makes two passes).                                         */
+  /*                                                                       */
+  /* - It can easily be modified to render to _any_ number of gray levels  */
+  /*   cheaply.                                                            */
+  /*                                                                       */
+  /* - For small (< 20) pixel sizes, it is faster than the standard        */
+  /*   renderer.                                                           */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
+  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
+  /* messages during execution.                                            */
+  /*                                                                       */
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_smooth
+
+
+#ifdef _STANDALONE_
+
+
+  /* Auxiliary macros for token concatenation. */
+#define FT_ERR_XCAT( x, y )  x ## y
+#define FT_ERR_CAT( x, y )   FT_ERR_XCAT( x, y )
+
+#define FT_BEGIN_STMNT  do {
+#define FT_END_STMNT    } while ( 0 )
+
+
+  /* define this to dump debugging information */
+/* #define FT_DEBUG_LEVEL_TRACE */
+
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+#include <stdio.h>
+#include <stdarg.h>
+#endif
+
+#include <stddef.h>
+#include <string.h>
+#include <setjmp.h>
+#include <limits.h>
+#define FT_UINT_MAX  UINT_MAX
+#define FT_INT_MAX   INT_MAX
+
+#define ft_memset   memset
+
+#define ft_setjmp   setjmp
+#define ft_longjmp  longjmp
+#define ft_jmp_buf  jmp_buf
+
+typedef ptrdiff_t  FT_PtrDist;
+
+
+#define ErrRaster_Invalid_Mode      -2
+#define ErrRaster_Invalid_Outline   -1
+#define ErrRaster_Invalid_Argument  -3
+#define ErrRaster_Memory_Overflow   -4
+
+#define FT_BEGIN_HEADER
+#define FT_END_HEADER
+
+#include "ftimage.h"
+#include "ftgrays.h"
+
+
+  /* This macro is used to indicate that a function parameter is unused. */
+  /* Its purpose is simply to reduce compiler warnings.  Note also that  */
+  /* simply defining it as `(void)x' doesn't avoid warnings with certain */
+  /* ANSI compilers (e.g. LCC).                                          */
+#define FT_UNUSED( x )  (x) = (x)
+
+
+  /* we only use level 5 & 7 tracing messages; cf. ftdebug.h */
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+
+  void
+  FT_Message( const char*  fmt,
+              ... )
+  {
+    va_list  ap;
+
+
+    va_start( ap, fmt );
+    vfprintf( stderr, fmt, ap );
+    va_end( ap );
+  }
+
+
+  /* empty function useful for setting a breakpoint to catch errors */
+  int
+  FT_Throw( int          error,
+            int          line,
+            const char*  file )
+  {
+    FT_UNUSED( error );
+    FT_UNUSED( line );
+    FT_UNUSED( file );
+
+    return 0;
+  }
+
+
+  /* we don't handle tracing levels in stand-alone mode; */
+#ifndef FT_TRACE5
+#define FT_TRACE5( varformat )  FT_Message varformat
+#endif
+#ifndef FT_TRACE7
+#define FT_TRACE7( varformat )  FT_Message varformat
+#endif
+#ifndef FT_ERROR
+#define FT_ERROR( varformat )   FT_Message varformat
+#endif
+
+#define FT_THROW( e )                               \
+          ( FT_Throw( FT_ERR_CAT( ErrRaster, e ),   \
+                      __LINE__,                     \
+                      __FILE__ )                  | \
+            FT_ERR_CAT( ErrRaster, e )            )
+
+#else /* !FT_DEBUG_LEVEL_TRACE */
+
+#define FT_TRACE5( x )  do { } while ( 0 )     /* nothing */
+#define FT_TRACE7( x )  do { } while ( 0 )     /* nothing */
+#define FT_ERROR( x )   do { } while ( 0 )     /* nothing */
+#define FT_THROW( e )   FT_ERR_CAT( ErrRaster_, e )
+
+
+#endif /* !FT_DEBUG_LEVEL_TRACE */
+
+
+#define FT_DEFINE_OUTLINE_FUNCS( class_,               \
+                                 move_to_, line_to_,   \
+                                 conic_to_, cubic_to_, \
+                                 shift_, delta_ )      \
+          static const FT_Outline_Funcs class_ =       \
+          {                                            \
+            move_to_,                                  \
+            line_to_,                                  \
+            conic_to_,                                 \
+            cubic_to_,                                 \
+            shift_,                                    \
+            delta_                                     \
+         };
+
+#define FT_DEFINE_RASTER_FUNCS( class_, glyph_format_,            \
+                                raster_new_, raster_reset_,       \
+                                raster_set_mode_, raster_render_, \
+                                raster_done_ )                    \
+          const FT_Raster_Funcs class_ =                          \
+          {                                                       \
+            glyph_format_,                                        \
+            raster_new_,                                          \
+            raster_reset_,                                        \
+            raster_set_mode_,                                     \
+            raster_render_,                                       \
+            raster_done_                                          \
+         };
+
+
+#else /* !_STANDALONE_ */
+
+
+#include <ft2build.h>
+#include "ftgrays.h"
+#include FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_DEBUG_H
+#include FT_OUTLINE_H
+
+#include "ftsmerrs.h"
+
+#include "ftspic.h"
+
+#define Smooth_Err_Invalid_Mode     Smooth_Err_Cannot_Render_Glyph
+#define Smooth_Err_Memory_Overflow  Smooth_Err_Out_Of_Memory
+#define ErrRaster_Memory_Overflow   Smooth_Err_Out_Of_Memory
+
+
+#endif /* !_STANDALONE_ */
+
+
+#ifndef FT_MEM_SET
+#define FT_MEM_SET( d, s, c )  ft_memset( d, s, c )
+#endif
+
+#ifndef FT_MEM_ZERO
+#define FT_MEM_ZERO( dest, count )  FT_MEM_SET( dest, 0, count )
+#endif
+
+  /* as usual, for the speed hungry :-) */
+
+#undef RAS_ARG
+#undef RAS_ARG_
+#undef RAS_VAR
+#undef RAS_VAR_
+
+#ifndef FT_STATIC_RASTER
+
+#define RAS_ARG   gray_PWorker  worker
+#define RAS_ARG_  gray_PWorker  worker,
+
+#define RAS_VAR   worker
+#define RAS_VAR_  worker,
+
+#else /* FT_STATIC_RASTER */
+
+#define RAS_ARG   /* empty */
+#define RAS_ARG_  /* empty */
+#define RAS_VAR   /* empty */
+#define RAS_VAR_  /* empty */
+
+#endif /* FT_STATIC_RASTER */
+
+
+  /* must be at least 6 bits! */
+#define PIXEL_BITS  8
+
+#undef FLOOR
+#undef CEILING
+#undef TRUNC
+#undef SCALED
+
+#define ONE_PIXEL       ( 1L << PIXEL_BITS )
+#define PIXEL_MASK      ( -1L << PIXEL_BITS )
+#define TRUNC( x )      ( (TCoord)( (x) >> PIXEL_BITS ) )
+#define SUBPIXELS( x )  ( (TPos)(x) << PIXEL_BITS )
+#define FLOOR( x )      ( (x) & -ONE_PIXEL )
+#define CEILING( x )    ( ( (x) + ONE_PIXEL - 1 ) & -ONE_PIXEL )
+#define ROUND( x )      ( ( (x) + ONE_PIXEL / 2 ) & -ONE_PIXEL )
+
+#if PIXEL_BITS >= 6
+#define UPSCALE( x )    ( (x) << ( PIXEL_BITS - 6 ) )
+#define DOWNSCALE( x )  ( (x) >> ( PIXEL_BITS - 6 ) )
+#else
+#define UPSCALE( x )    ( (x) >> ( 6 - PIXEL_BITS ) )
+#define DOWNSCALE( x )  ( (x) << ( 6 - PIXEL_BITS ) )
+#endif
+
+
+  /* Compute `dividend / divisor' and return both its quotient and     */
+  /* remainder, cast to a specific type.  This macro also ensures that */
+  /* the remainder is always positive.                                 */
+#define FT_DIV_MOD( type, dividend, divisor, quotient, remainder ) \
+  FT_BEGIN_STMNT                                                   \
+    (quotient)  = (type)( (dividend) / (divisor) );                \
+    (remainder) = (type)( (dividend) % (divisor) );                \
+    if ( (remainder) < 0 )                                         \
+    {                                                              \
+      (quotient)--;                                                \
+      (remainder) += (type)(divisor);                              \
+    }                                                              \
+  FT_END_STMNT
+
+#ifdef  __arm__
+  /* Work around a bug specific to GCC which make the compiler fail to */
+  /* optimize a division and modulo operation on the same parameters   */
+  /* into a single call to `__aeabi_idivmod'.  See                     */
+  /*                                                                   */
+  /*  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43721                */
+#undef FT_DIV_MOD
+#define FT_DIV_MOD( type, dividend, divisor, quotient, remainder ) \
+  FT_BEGIN_STMNT                                                   \
+    (quotient)  = (type)( (dividend) / (divisor) );                \
+    (remainder) = (type)( (dividend) - (quotient) * (divisor) );   \
+    if ( (remainder) < 0 )                                         \
+    {                                                              \
+      (quotient)--;                                                \
+      (remainder) += (type)(divisor);                              \
+    }                                                              \
+  FT_END_STMNT
+#endif /* __arm__ */
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /*   TYPE DEFINITIONS                                                    */
+  /*                                                                       */
+
+  /* don't change the following types to FT_Int or FT_Pos, since we might */
+  /* need to define them to "float" or "double" when experimenting with   */
+  /* new algorithms                                                       */
+
+  typedef long  TCoord;   /* integer scanline/pixel coordinate */
+  typedef long  TPos;     /* sub-pixel coordinate              */
+
+  /* determine the type used to store cell areas.  This normally takes at */
+  /* least PIXEL_BITS*2 + 1 bits.  On 16-bit systems, we need to use      */
+  /* `long' instead of `int', otherwise bad things happen                 */
+
+#if PIXEL_BITS <= 7
+
+  typedef int  TArea;
+
+#else /* PIXEL_BITS >= 8 */
+
+  /* approximately determine the size of integers using an ANSI-C header */
+#if FT_UINT_MAX == 0xFFFFU
+  typedef long  TArea;
+#else
+  typedef int   TArea;
+#endif
+
+#endif /* PIXEL_BITS >= 8 */
+
+
+  /* maximum number of gray spans in a call to the span callback */
+#define FT_MAX_GRAY_SPANS  32
+
+
+  typedef struct TCell_*  PCell;
+
+  typedef struct  TCell_
+  {
+    TPos    x;     /* same with gray_TWorker.ex    */
+    TCoord  cover; /* same with gray_TWorker.cover */
+    TArea   area;
+    PCell   next;
+
+  } TCell;
+
+
+#if defined( _MSC_VER )      /* Visual C++ (and Intel C++) */
+  /* We disable the warning `structure was padded due to   */
+  /* __declspec(align())' in order to compile cleanly with */
+  /* the maximum level of warnings.                        */
+#pragma warning( push )
+#pragma warning( disable : 4324 )
+#endif /* _MSC_VER */
+
+  typedef struct  gray_TWorker_
+  {
+    TCoord  ex, ey;
+    TPos    min_ex, max_ex;
+    TPos    min_ey, max_ey;
+    TPos    count_ex, count_ey;
+
+    TArea   area;
+    TCoord  cover;
+    int     invalid;
+
+    PCell       cells;
+    FT_PtrDist  max_cells;
+    FT_PtrDist  num_cells;
+
+    TCoord  cx, cy;
+    TPos    x,  y;
+
+    TPos    last_ey;
+
+    FT_Vector   bez_stack[32 * 3 + 1];
+    int         lev_stack[32];
+
+    FT_Outline  outline;
+    FT_Bitmap   target;
+    FT_BBox     clip_box;
+
+    FT_Span     gray_spans[FT_MAX_GRAY_SPANS];
+    int         num_gray_spans;
+
+    FT_Raster_Span_Func  render_span;
+    void*                render_span_data;
+    int                  span_y;
+
+    int  band_size;
+    int  band_shoot;
+
+    ft_jmp_buf  jump_buffer;
+
+    void*       buffer;
+    long        buffer_size;
+
+    PCell*     ycells;
+    TPos       ycount;
+
+  } gray_TWorker, *gray_PWorker;
+
+#if defined( _MSC_VER )
+#pragma warning( pop )
+#endif
+
+
+#ifndef FT_STATIC_RASTER
+#define ras  (*worker)
+#else
+  static gray_TWorker  ras;
+#endif
+
+
+  typedef struct gray_TRaster_
+  {
+    void*         buffer;
+    long          buffer_size;
+    int           band_size;
+    void*         memory;
+    gray_PWorker  worker;
+
+  } gray_TRaster, *gray_PRaster;
+
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Initialize the cells table.                                           */
+  /*                                                                       */
+  static void
+  gray_init_cells( RAS_ARG_ void*  buffer,
+                   long            byte_size )
+  {
+    ras.buffer      = buffer;
+    ras.buffer_size = byte_size;
+
+    ras.ycells      = (PCell*) buffer;
+    ras.cells       = NULL;
+    ras.max_cells   = 0;
+    ras.num_cells   = 0;
+    ras.area        = 0;
+    ras.cover       = 0;
+    ras.invalid     = 1;
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Compute the outline bounding box.                                     */
+  /*                                                                       */
+  static void
+  gray_compute_cbox( RAS_ARG )
+  {
+    FT_Outline*  outline = &ras.outline;
+    FT_Vector*   vec     = outline->points;
+    FT_Vector*   limit   = vec + outline->n_points;
+
+
+    if ( outline->n_points <= 0 )
+    {
+      ras.min_ex = ras.max_ex = 0;
+      ras.min_ey = ras.max_ey = 0;
+      return;
+    }
+
+    ras.min_ex = ras.max_ex = vec->x;
+    ras.min_ey = ras.max_ey = vec->y;
+
+    vec++;
+
+    for ( ; vec < limit; vec++ )
+    {
+      TPos  x = vec->x;
+      TPos  y = vec->y;
+
+
+      if ( x < ras.min_ex ) ras.min_ex = x;
+      if ( x > ras.max_ex ) ras.max_ex = x;
+      if ( y < ras.min_ey ) ras.min_ey = y;
+      if ( y > ras.max_ey ) ras.max_ey = y;
+    }
+
+    /* truncate the bounding box to integer pixels */
+    ras.min_ex = ras.min_ex >> 6;
+    ras.min_ey = ras.min_ey >> 6;
+    ras.max_ex = ( ras.max_ex + 63 ) >> 6;
+    ras.max_ey = ( ras.max_ey + 63 ) >> 6;
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Record the current cell in the table.                                 */
+  /*                                                                       */
+  static PCell
+  gray_find_cell( RAS_ARG )
+  {
+    PCell  *pcell, cell;
+    TPos    x = ras.ex;
+
+
+    if ( x > ras.count_ex )
+      x = ras.count_ex;
+
+    pcell = &ras.ycells[ras.ey];
+    for (;;)
+    {
+      cell = *pcell;
+      if ( cell == NULL || cell->x > x )
+        break;
+
+      if ( cell->x == x )
+        goto Exit;
+
+      pcell = &cell->next;
+    }
+
+    if ( ras.num_cells >= ras.max_cells )
+      ft_longjmp( ras.jump_buffer, 1 );
+
+    cell        = ras.cells + ras.num_cells++;
+    cell->x     = x;
+    cell->area  = 0;
+    cell->cover = 0;
+
+    cell->next  = *pcell;
+    *pcell      = cell;
+
+  Exit:
+    return cell;
+  }
+
+
+  static void
+  gray_record_cell( RAS_ARG )
+  {
+    if ( ras.area | ras.cover )
+    {
+      PCell  cell = gray_find_cell( RAS_VAR );
+
+
+      cell->area  += ras.area;
+      cell->cover += ras.cover;
+    }
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Set the current cell to a new position.                               */
+  /*                                                                       */
+  static void
+  gray_set_cell( RAS_ARG_ TCoord  ex,
+                          TCoord  ey )
+  {
+    /* Move the cell pointer to a new position.  We set the `invalid'      */
+    /* flag to indicate that the cell isn't part of those we're interested */
+    /* in during the render phase.  This means that:                       */
+    /*                                                                     */
+    /* . the new vertical position must be within min_ey..max_ey-1.        */
+    /* . the new horizontal position must be strictly less than max_ex     */
+    /*                                                                     */
+    /* Note that if a cell is to the left of the clipping region, it is    */
+    /* actually set to the (min_ex-1) horizontal position.                 */
+
+    /* All cells that are on the left of the clipping region go to the */
+    /* min_ex - 1 horizontal position.                                 */
+    ey -= ras.min_ey;
+
+    if ( ex > ras.max_ex )
+      ex = ras.max_ex;
+
+    ex -= ras.min_ex;
+    if ( ex < 0 )
+      ex = -1;
+
+    /* are we moving to a different cell ? */
+    if ( ex != ras.ex || ey != ras.ey )
+    {
+      /* record the current one if it is valid */
+      if ( !ras.invalid )
+        gray_record_cell( RAS_VAR );
+
+      ras.area  = 0;
+      ras.cover = 0;
+      ras.ex    = ex;
+      ras.ey    = ey;
+    }
+
+    ras.invalid = ( (unsigned)ey >= (unsigned)ras.count_ey ||
+                              ex >= ras.count_ex           );
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Start a new contour at a given cell.                                  */
+  /*                                                                       */
+  static void
+  gray_start_cell( RAS_ARG_ TCoord  ex,
+                            TCoord  ey )
+  {
+    if ( ex > ras.max_ex )
+      ex = (TCoord)( ras.max_ex );
+
+    if ( ex < ras.min_ex )
+      ex = (TCoord)( ras.min_ex - 1 );
+
+    ras.area    = 0;
+    ras.cover   = 0;
+    ras.ex      = ex - ras.min_ex;
+    ras.ey      = ey - ras.min_ey;
+    ras.last_ey = SUBPIXELS( ey );
+    ras.invalid = 0;
+
+    gray_set_cell( RAS_VAR_ ex, ey );
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Render a scanline as one or more cells.                               */
+  /*                                                                       */
+  static void
+  gray_render_scanline( RAS_ARG_ TCoord  ey,
+                                 TPos    x1,
+                                 TCoord  y1,
+                                 TPos    x2,
+                                 TCoord  y2 )
+  {
+    TCoord  ex1, ex2, fx1, fx2, delta, mod;
+    long    p, first, dx;
+    int     incr;
+
+
+    dx = x2 - x1;
+
+    ex1 = TRUNC( x1 );
+    ex2 = TRUNC( x2 );
+    fx1 = (TCoord)( x1 - SUBPIXELS( ex1 ) );
+    fx2 = (TCoord)( x2 - SUBPIXELS( ex2 ) );
+
+    /* trivial case.  Happens often */
+    if ( y1 == y2 )
+    {
+      gray_set_cell( RAS_VAR_ ex2, ey );
+      return;
+    }
+
+    /* everything is located in a single cell.  That is easy! */
+    /*                                                        */
+    if ( ex1 == ex2 )
+    {
+      delta      = y2 - y1;
+      ras.area  += (TArea)(( fx1 + fx2 ) * delta);
+      ras.cover += delta;
+      return;
+    }
+
+    /* ok, we'll have to render a run of adjacent cells on the same */
+    /* scanline...                                                  */
+    /*                                                              */
+    p     = ( ONE_PIXEL - fx1 ) * ( y2 - y1 );
+    first = ONE_PIXEL;
+    incr  = 1;
+
+    if ( dx < 0 )
+    {
+      p     = fx1 * ( y2 - y1 );
+      first = 0;
+      incr  = -1;
+      dx    = -dx;
+    }
+
+    FT_DIV_MOD( TCoord, p, dx, delta, mod );
+
+    ras.area  += (TArea)(( fx1 + first ) * delta);
+    ras.cover += delta;
+
+    ex1 += incr;
+    gray_set_cell( RAS_VAR_ ex1, ey );
+    y1  += delta;
+
+    if ( ex1 != ex2 )
+    {
+      TCoord  lift, rem;
+
+
+      p = ONE_PIXEL * ( y2 - y1 + delta );
+      FT_DIV_MOD( TCoord, p, dx, lift, rem );
+
+      mod -= (int)dx;
+
+      while ( ex1 != ex2 )
+      {
+        delta = lift;
+        mod  += rem;
+        if ( mod >= 0 )
+        {
+          mod -= (TCoord)dx;
+          delta++;
+        }
+
+        ras.area  += (TArea)(ONE_PIXEL * delta);
+        ras.cover += delta;
+        y1        += delta;
+        ex1       += incr;
+        gray_set_cell( RAS_VAR_ ex1, ey );
+      }
+    }
+
+    delta      = y2 - y1;
+    ras.area  += (TArea)(( fx2 + ONE_PIXEL - first ) * delta);
+    ras.cover += delta;
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* Render a given line as a series of scanlines.                         */
+  /*                                                                       */
+  static void
+  gray_render_line( RAS_ARG_ TPos  to_x,
+                             TPos  to_y )
+  {
+    TCoord  ey1, ey2, fy1, fy2, mod;
+    TPos    dx, dy, x, x2;
+    long    p, first;
+    int     delta, rem, lift, incr;
+
+
+    ey1 = TRUNC( ras.last_ey );
+    ey2 = TRUNC( to_y );     /* if (ey2 >= ras.max_ey) ey2 = ras.max_ey-1; */
+    fy1 = (TCoord)( ras.y - ras.last_ey );
+    fy2 = (TCoord)( to_y - SUBPIXELS( ey2 ) );
+
+    dx = to_x - ras.x;
+    dy = to_y - ras.y;
+
+    /* perform vertical clipping */
+    {
+      TCoord  min, max;
+
+
+      min = ey1;
+      max = ey2;
+      if ( ey1 > ey2 )
+      {
+        min = ey2;
+        max = ey1;
+      }
+      if ( min >= ras.max_ey || max < ras.min_ey )
+        goto End;
+    }
+
+    /* everything is on a single scanline */
+    if ( ey1 == ey2 )
+    {
+      gray_render_scanline( RAS_VAR_ ey1, ras.x, fy1, to_x, fy2 );
+      goto End;
+    }
+
+    /* vertical line - avoid calling gray_render_scanline */
+    incr = 1;
+
+    if ( dx == 0 )
+    {
+      TCoord  ex     = TRUNC( ras.x );
+      TCoord  two_fx = (TCoord)( ( ras.x - SUBPIXELS( ex ) ) << 1 );
+      TArea   area;
+
+
+      first = ONE_PIXEL;
+      if ( dy < 0 )
+      {
+        first = 0;
+        incr  = -1;
+      }
+
+      delta      = (int)( first - fy1 );
+      ras.area  += (TArea)two_fx * delta;
+      ras.cover += delta;
+      ey1       += incr;
+
+      gray_set_cell( RAS_VAR_ ex, ey1 );
+
+      delta = (int)( first + first - ONE_PIXEL );
+      area  = (TArea)two_fx * delta;
+      while ( ey1 != ey2 )
+      {
+        ras.area  += area;
+        ras.cover += delta;
+        ey1       += incr;
+
+        gray_set_cell( RAS_VAR_ ex, ey1 );
+      }
+
+      delta      = (int)( fy2 - ONE_PIXEL + first );
+      ras.area  += (TArea)two_fx * delta;
+      ras.cover += delta;
+
+      goto End;
+    }
+
+    /* ok, we have to render several scanlines */
+    p     = ( ONE_PIXEL - fy1 ) * dx;
+    first = ONE_PIXEL;
+    incr  = 1;
+
+    if ( dy < 0 )
+    {
+      p     = fy1 * dx;
+      first = 0;
+      incr  = -1;
+      dy    = -dy;
+    }
+
+    FT_DIV_MOD( int, p, dy, delta, mod );
+
+    x = ras.x + delta;
+    gray_render_scanline( RAS_VAR_ ey1, ras.x, fy1, x, (TCoord)first );
+
+    ey1 += incr;
+    gray_set_cell( RAS_VAR_ TRUNC( x ), ey1 );
+
+    if ( ey1 != ey2 )
+    {
+      p     = ONE_PIXEL * dx;
+      FT_DIV_MOD( int, p, dy, lift, rem );
+      mod -= (int)dy;
+
+      while ( ey1 != ey2 )
+      {
+        delta = lift;
+        mod  += rem;
+        if ( mod >= 0 )
+        {
+          mod -= (int)dy;
+          delta++;
+        }
+
+        x2 = x + delta;
+        gray_render_scanline( RAS_VAR_ ey1, x,
+                                       (TCoord)( ONE_PIXEL - first ), x2,
+                                       (TCoord)first );
+        x = x2;
+
+        ey1 += incr;
+        gray_set_cell( RAS_VAR_ TRUNC( x ), ey1 );
+      }
+    }
+
+    gray_render_scanline( RAS_VAR_ ey1, x,
+                                   (TCoord)( ONE_PIXEL - first ), to_x,
+                                   fy2 );
+
+  End:
+    ras.x       = to_x;
+    ras.y       = to_y;
+    ras.last_ey = SUBPIXELS( ey2 );
+  }
+
+
+  static void
+  gray_split_conic( FT_Vector*  base )
+  {
+    TPos  a, b;
+
+
+    base[4].x = base[2].x;
+    b = base[1].x;
+    a = base[3].x = ( base[2].x + b ) / 2;
+    b = base[1].x = ( base[0].x + b ) / 2;
+    base[2].x = ( a + b ) / 2;
+
+    base[4].y = base[2].y;
+    b = base[1].y;
+    a = base[3].y = ( base[2].y + b ) / 2;
+    b = base[1].y = ( base[0].y + b ) / 2;
+    base[2].y = ( a + b ) / 2;
+  }
+
+
+  static void
+  gray_render_conic( RAS_ARG_ const FT_Vector*  control,
+                              const FT_Vector*  to )
+  {
+    TPos        dx, dy;
+    TPos        min, max, y;
+    int         top, level;
+    int*        levels;
+    FT_Vector*  arc;
+
+
+    levels = ras.lev_stack;
+
+    arc      = ras.bez_stack;
+    arc[0].x = UPSCALE( to->x );
+    arc[0].y = UPSCALE( to->y );
+    arc[1].x = UPSCALE( control->x );
+    arc[1].y = UPSCALE( control->y );
+    arc[2].x = ras.x;
+    arc[2].y = ras.y;
+    top      = 0;
+
+    dx = FT_ABS( arc[2].x + arc[0].x - 2 * arc[1].x );
+    dy = FT_ABS( arc[2].y + arc[0].y - 2 * arc[1].y );
+    if ( dx < dy )
+      dx = dy;
+
+    if ( dx < ONE_PIXEL / 4 )
+      goto Draw;
+
+    /* short-cut the arc that crosses the current band */
+    min = max = arc[0].y;
+
+    y = arc[1].y;
+    if ( y < min ) min = y;
+    if ( y > max ) max = y;
+
+    y = arc[2].y;
+    if ( y < min ) min = y;
+    if ( y > max ) max = y;
+
+    if ( TRUNC( min ) >= ras.max_ey || TRUNC( max ) < ras.min_ey )
+      goto Draw;
+
+    level = 0;
+    do
+    {
+      dx >>= 2;
+      level++;
+    } while ( dx > ONE_PIXEL / 4 );
+
+    levels[0] = level;
+
+    do
+    {
+      level = levels[top];
+      if ( level > 0 )
+      {
+        gray_split_conic( arc );
+        arc += 2;
+        top++;
+        levels[top] = levels[top - 1] = level - 1;
+        continue;
+      }
+
+    Draw:
+      gray_render_line( RAS_VAR_ arc[0].x, arc[0].y );
+      top--;
+      arc -= 2;
+
+    } while ( top >= 0 );
+  }
+
+
+  static void
+  gray_split_cubic( FT_Vector*  base )
+  {
+    TPos  a, b, c, d;
+
+
+    base[6].x = base[3].x;
+    c = base[1].x;
+    d = base[2].x;
+    base[1].x = a = ( base[0].x + c ) / 2;
+    base[5].x = b = ( base[3].x + d ) / 2;
+    c = ( c + d ) / 2;
+    base[2].x = a = ( a + c ) / 2;
+    base[4].x = b = ( b + c ) / 2;
+    base[3].x = ( a + b ) / 2;
+
+    base[6].y = base[3].y;
+    c = base[1].y;
+    d = base[2].y;
+    base[1].y = a = ( base[0].y + c ) / 2;
+    base[5].y = b = ( base[3].y + d ) / 2;
+    c = ( c + d ) / 2;
+    base[2].y = a = ( a + c ) / 2;
+    base[4].y = b = ( b + c ) / 2;
+    base[3].y = ( a + b ) / 2;
+  }
+
+
+  static void
+  gray_render_cubic( RAS_ARG_ const FT_Vector*  control1,
+                              const FT_Vector*  control2,
+                              const FT_Vector*  to )
+  {
+    FT_Vector*  arc;
+    TPos        min, max, y;
+
+
+    arc      = ras.bez_stack;
+    arc[0].x = UPSCALE( to->x );
+    arc[0].y = UPSCALE( to->y );
+    arc[1].x = UPSCALE( control2->x );
+    arc[1].y = UPSCALE( control2->y );
+    arc[2].x = UPSCALE( control1->x );
+    arc[2].y = UPSCALE( control1->y );
+    arc[3].x = ras.x;
+    arc[3].y = ras.y;
+
+    /* Short-cut the arc that crosses the current band. */
+    min = max = arc[0].y;
+
+    y = arc[1].y;
+    if ( y < min )
+      min = y;
+    if ( y > max )
+      max = y;
+
+    y = arc[2].y;
+    if ( y < min )
+      min = y;
+    if ( y > max )
+      max = y;
+
+    y = arc[3].y;
+    if ( y < min )
+      min = y;
+    if ( y > max )
+      max = y;
+
+    if ( TRUNC( min ) >= ras.max_ey || TRUNC( max ) < ras.min_ey )
+      goto Draw;
+
+    for (;;)
+    {
+      /* Decide whether to split or draw. See `Rapid Termination          */
+      /* Evaluation for Recursive Subdivision of Bezier Curves' by Thomas */
+      /* F. Hain, at                                                      */
+      /* http://www.cis.southalabama.edu/~hain/general/Publications/Bezier/Camera-ready%20CISST02%202.pdf */
+
+      {
+        TPos  dx, dy, dx_, dy_;
+        TPos  dx1, dy1, dx2, dy2;
+        TPos  L, s, s_limit;
+
+
+        /* dx and dy are x and y components of the P0-P3 chord vector. */
+        dx = dx_ = arc[3].x - arc[0].x;
+        dy = dy_ = arc[3].y - arc[0].y;
+
+        L = FT_HYPOT( dx_, dy_ );
+
+        /* Avoid possible arithmetic overflow below by splitting. */
+        if ( L > 32767 )
+          goto Split;
+
+        /* Max deviation may be as much as (s/L) * 3/4 (if Hain's v = 1). */
+        s_limit = L * (TPos)( ONE_PIXEL / 6 );
+
+        /* s is L * the perpendicular distance from P1 to the line P0-P3. */
+        dx1 = arc[1].x - arc[0].x;
+        dy1 = arc[1].y - arc[0].y;
+        s = FT_ABS( dy * dx1 - dx * dy1 );
+
+        if ( s > s_limit )
+          goto Split;
+
+        /* s is L * the perpendicular distance from P2 to the line P0-P3. */
+        dx2 = arc[2].x - arc[0].x;
+        dy2 = arc[2].y - arc[0].y;
+        s = FT_ABS( dy * dx2 - dx * dy2 );
+
+        if ( s > s_limit )
+          goto Split;
+
+        /* Split super curvy segments where the off points are so far
+           from the chord that the angles P0-P1-P3 or P0-P2-P3 become
+           acute as detected by appropriate dot products. */
+        if ( dx1 * ( dx1 - dx ) + dy1 * ( dy1 - dy ) > 0 ||
+             dx2 * ( dx2 - dx ) + dy2 * ( dy2 - dy ) > 0 )
+          goto Split;
+
+        /* No reason to split. */
+        goto Draw;
+      }
+
+    Split:
+      gray_split_cubic( arc );
+      arc += 3;
+      continue;
+
+    Draw:
+      gray_render_line( RAS_VAR_ arc[0].x, arc[0].y );
+
+      if ( arc == ras.bez_stack )
+        return;
+
+      arc -= 3;
+    }
+  }
+
+
+  static int
+  gray_move_to( const FT_Vector*  to,
+                gray_PWorker      worker )
+  {
+    TPos  x, y;
+
+
+    /* record current cell, if any */
+    if ( !ras.invalid )
+      gray_record_cell( RAS_VAR );
+
+    /* start to a new position */
+    x = UPSCALE( to->x );
+    y = UPSCALE( to->y );
+
+    gray_start_cell( RAS_VAR_ TRUNC( x ), TRUNC( y ) );
+
+    worker->x = x;
+    worker->y = y;
+    return 0;
+  }
+
+
+  static int
+  gray_line_to( const FT_Vector*  to,
+                gray_PWorker      worker )
+  {
+    gray_render_line( RAS_VAR_ UPSCALE( to->x ), UPSCALE( to->y ) );
+    return 0;
+  }
+
+
+  static int
+  gray_conic_to( const FT_Vector*  control,
+                 const FT_Vector*  to,
+                 gray_PWorker      worker )
+  {
+    gray_render_conic( RAS_VAR_ control, to );
+    return 0;
+  }
+
+
+  static int
+  gray_cubic_to( const FT_Vector*  control1,
+                 const FT_Vector*  control2,
+                 const FT_Vector*  to,
+                 gray_PWorker      worker )
+  {
+    gray_render_cubic( RAS_VAR_ control1, control2, to );
+    return 0;
+  }
+
+
+  static void
+  gray_render_span( int             y,
+                    int             count,
+                    const FT_Span*  spans,
+                    gray_PWorker    worker )
+  {
+    unsigned char*  p;
+    FT_Bitmap*      map = &worker->target;
+
+
+    /* first of all, compute the scanline offset */
+    p = (unsigned char*)map->buffer - y * map->pitch;
+    if ( map->pitch >= 0 )
+      p += (unsigned)( ( map->rows - 1 ) * map->pitch );
+
+    for ( ; count > 0; count--, spans++ )
+    {
+      unsigned char  coverage = spans->coverage;
+
+
+      if ( coverage )
+      {
+        /* For small-spans it is faster to do it by ourselves than
+         * calling `memset'.  This is mainly due to the cost of the
+         * function call.
+         */
+        if ( spans->len >= 8 )
+          FT_MEM_SET( p + spans->x, (unsigned char)coverage, spans->len );
+        else
+        {
+          unsigned char*  q = p + spans->x;
+
+
+          switch ( spans->len )
+          {
+          case 7: *q++ = (unsigned char)coverage;
+          case 6: *q++ = (unsigned char)coverage;
+          case 5: *q++ = (unsigned char)coverage;
+          case 4: *q++ = (unsigned char)coverage;
+          case 3: *q++ = (unsigned char)coverage;
+          case 2: *q++ = (unsigned char)coverage;
+          case 1: *q   = (unsigned char)coverage;
+          default:
+            ;
+          }
+        }
+      }
+    }
+  }
+
+
+  static void
+  gray_hline( RAS_ARG_ TCoord  x,
+                       TCoord  y,
+                       TPos    area,
+                       TCoord  acount )
+  {
+    int  coverage;
+
+
+    /* compute the coverage line's coverage, depending on the    */
+    /* outline fill rule                                         */
+    /*                                                           */
+    /* the coverage percentage is area/(PIXEL_BITS*PIXEL_BITS*2) */
+    /*                                                           */
+    coverage = (int)( area >> ( PIXEL_BITS * 2 + 1 - 8 ) );
+                                                    /* use range 0..256 */
+    if ( coverage < 0 )
+      coverage = -coverage;
+
+    if ( ras.outline.flags & FT_OUTLINE_EVEN_ODD_FILL )
+    {
+      coverage &= 511;
+
+      if ( coverage > 256 )
+        coverage = 512 - coverage;
+      else if ( coverage == 256 )
+        coverage = 255;
+    }
+    else
+    {
+      /* normal non-zero winding rule */
+      if ( coverage >= 256 )
+        coverage = 255;
+    }
+
+    y += (TCoord)ras.min_ey;
+    x += (TCoord)ras.min_ex;
+
+    /* FT_Span.x is a 16-bit short, so limit our coordinates appropriately */
+    if ( x >= 32767 )
+      x = 32767;
+
+    /* FT_Span.y is an integer, so limit our coordinates appropriately */
+    if ( y >= FT_INT_MAX )
+      y = FT_INT_MAX;
+
+    if ( coverage )
+    {
+      FT_Span*  span;
+      int       count;
+
+
+      /* see whether we can add this span to the current list */
+      count = ras.num_gray_spans;
+      span  = ras.gray_spans + count - 1;
+      if ( count > 0                          &&
+           ras.span_y == y                    &&
+           (int)span->x + span->len == (int)x &&
+           span->coverage == coverage         )
+      {
+        span->len = (unsigned short)( span->len + acount );
+        return;
+      }
+
+      if ( ras.span_y != y || count >= FT_MAX_GRAY_SPANS )
+      {
+        if ( ras.render_span && count > 0 )
+          ras.render_span( ras.span_y, count, ras.gray_spans,
+                           ras.render_span_data );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+
+        if ( count > 0 )
+        {
+          int  n;
+
+
+          FT_TRACE7(( "y = %3d ", ras.span_y ));
+          span = ras.gray_spans;
+          for ( n = 0; n < count; n++, span++ )
+            FT_TRACE7(( "[%d..%d]:%02x ",
+                        span->x, span->x + span->len - 1, span->coverage ));
+          FT_TRACE7(( "\n" ));
+        }
+
+#endif /* FT_DEBUG_LEVEL_TRACE */
+
+        ras.num_gray_spans = 0;
+        ras.span_y         = (int)y;
+
+        span  = ras.gray_spans;
+      }
+      else
+        span++;
+
+      /* add a gray span to the current list */
+      span->x        = (short)x;
+      span->len      = (unsigned short)acount;
+      span->coverage = (unsigned char)coverage;
+
+      ras.num_gray_spans++;
+    }
+  }
+
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+
+  /* to be called while in the debugger --                                */
+  /* this function causes a compiler warning since it is unused otherwise */
+  static void
+  gray_dump_cells( RAS_ARG )
+  {
+    int  yindex;
+
+
+    for ( yindex = 0; yindex < ras.ycount; yindex++ )
+    {
+      PCell  cell;
+
+
+      printf( "%3d:", yindex );
+
+      for ( cell = ras.ycells[yindex]; cell != NULL; cell = cell->next )
+        printf( " (%3ld, c:%4ld, a:%6d)", cell->x, cell->cover, cell->area );
+      printf( "\n" );
+    }
+  }
+
+#endif /* FT_DEBUG_LEVEL_TRACE */
+
+
+  static void
+  gray_sweep( RAS_ARG_ const FT_Bitmap*  target )
+  {
+    int  yindex;
+
+    FT_UNUSED( target );
+
+
+    if ( ras.num_cells == 0 )
+      return;
+
+    ras.num_gray_spans = 0;
+
+    FT_TRACE7(( "gray_sweep: start\n" ));
+
+    for ( yindex = 0; yindex < ras.ycount; yindex++ )
+    {
+      PCell   cell  = ras.ycells[yindex];
+      TCoord  cover = 0;
+      TCoord  x     = 0;
+
+
+      for ( ; cell != NULL; cell = cell->next )
+      {
+        TPos  area;
+
+
+        if ( cell->x > x && cover != 0 )
+          gray_hline( RAS_VAR_ x, yindex, cover * ( ONE_PIXEL * 2 ),
+                      cell->x - x );
+
+        cover += cell->cover;
+        area   = cover * ( ONE_PIXEL * 2 ) - cell->area;
+
+        if ( area != 0 && cell->x >= 0 )
+          gray_hline( RAS_VAR_ cell->x, yindex, area, 1 );
+
+        x = cell->x + 1;
+      }
+
+      if ( cover != 0 )
+        gray_hline( RAS_VAR_ x, yindex, cover * ( ONE_PIXEL * 2 ),
+                    ras.count_ex - x );
+    }
+
+    if ( ras.render_span && ras.num_gray_spans > 0 )
+      ras.render_span( ras.span_y, ras.num_gray_spans,
+                       ras.gray_spans, ras.render_span_data );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+
+    if ( ras.num_gray_spans > 0 )
+    {
+      FT_Span*  span;
+      int       n;
+
+
+      FT_TRACE7(( "y = %3d ", ras.span_y ));
+      span = ras.gray_spans;
+      for ( n = 0; n < ras.num_gray_spans; n++, span++ )
+        FT_TRACE7(( "[%d..%d]:%02x ",
+                    span->x, span->x + span->len - 1, span->coverage ));
+      FT_TRACE7(( "\n" ));
+    }
+
+    FT_TRACE7(( "gray_sweep: end\n" ));
+
+#endif /* FT_DEBUG_LEVEL_TRACE */
+
+  }
+
+
+#ifdef _STANDALONE_
+
+  /*************************************************************************/
+  /*                                                                       */
+  /*  The following function should only compile in stand-alone mode,      */
+  /*  i.e., when building this component without the rest of FreeType.     */
+  /*                                                                       */
+  /*************************************************************************/
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    FT_Outline_Decompose                                               */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Walk over an outline's structure to decompose it into individual   */
+  /*    segments and Bézier arcs.  This function is also able to emit      */
+  /*    `move to' and `close to' operations to indicate the start and end  */
+  /*    of new contours in the outline.                                    */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    outline        :: A pointer to the source target.                  */
+  /*                                                                       */
+  /*    func_interface :: A table of `emitters', i.e., function pointers   */
+  /*                      called during decomposition to indicate path     */
+  /*                      operations.                                      */
+  /*                                                                       */
+  /* <InOut>                                                               */
+  /*    user           :: A typeless pointer which is passed to each       */
+  /*                      emitter during the decomposition.  It can be     */
+  /*                      used to store the state during the               */
+  /*                      decomposition.                                   */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    Error code.  0 means success.                                      */
+  /*                                                                       */
+  static int
+  FT_Outline_Decompose( const FT_Outline*        outline,
+                        const FT_Outline_Funcs*  func_interface,
+                        void*                    user )
+  {
+#undef SCALED
+#define SCALED( x )  ( ( (x) << shift ) - delta )
+
+    FT_Vector   v_last;
+    FT_Vector   v_control;
+    FT_Vector   v_start;
+
+    FT_Vector*  point;
+    FT_Vector*  limit;
+    char*       tags;
+
+    int         error;
+
+    int   n;         /* index of contour in outline     */
+    int   first;     /* index of first point in contour */
+    char  tag;       /* current point's state           */
+
+    int   shift;
+    TPos  delta;
+
+
+    if ( !outline )
+      return FT_THROW( Invalid_Outline );
+
+    if ( !func_interface )
+      return FT_THROW( Invalid_Argument );
+
+    shift = func_interface->shift;
+    delta = func_interface->delta;
+    first = 0;
+
+    for ( n = 0; n < outline->n_contours; n++ )
+    {
+      int  last;  /* index of last point in contour */
+
+
+      FT_TRACE5(( "FT_Outline_Decompose: Outline %d\n", n ));
+
+      last  = outline->contours[n];
+      if ( last < 0 )
+        goto Invalid_Outline;
+      limit = outline->points + last;
+
+      v_start   = outline->points[first];
+      v_start.x = SCALED( v_start.x );
+      v_start.y = SCALED( v_start.y );
+
+      v_last   = outline->points[last];
+      v_last.x = SCALED( v_last.x );
+      v_last.y = SCALED( v_last.y );
+
+      v_control = v_start;
+
+      point = outline->points + first;
+      tags  = outline->tags   + first;
+      tag   = FT_CURVE_TAG( tags[0] );
+
+      /* A contour cannot start with a cubic control point! */
+      if ( tag == FT_CURVE_TAG_CUBIC )
+        goto Invalid_Outline;
+
+      /* check first point to determine origin */
+      if ( tag == FT_CURVE_TAG_CONIC )
+      {
+        /* first point is conic control.  Yes, this happens. */
+        if ( FT_CURVE_TAG( outline->tags[last] ) == FT_CURVE_TAG_ON )
+        {
+          /* start at last point if it is on the curve */
+          v_start = v_last;
+          limit--;
+        }
+        else
+        {
+          /* if both first and last points are conic,         */
+          /* start at their middle and record its position    */
+          /* for closure                                      */
+          v_start.x = ( v_start.x + v_last.x ) / 2;
+          v_start.y = ( v_start.y + v_last.y ) / 2;
+
+          v_last = v_start;
+        }
+        point--;
+        tags--;
+      }
+
+      FT_TRACE5(( "  move to (%.2f, %.2f)\n",
+                  v_start.x / 64.0, v_start.y / 64.0 ));
+      error = func_interface->move_to( &v_start, user );
+      if ( error )
+        goto Exit;
+
+      while ( point < limit )
+      {
+        point++;
+        tags++;
+
+        tag = FT_CURVE_TAG( tags[0] );
+        switch ( tag )
+        {
+        case FT_CURVE_TAG_ON:  /* emit a single line_to */
+          {
+            FT_Vector  vec;
+
+
+            vec.x = SCALED( point->x );
+            vec.y = SCALED( point->y );
+
+            FT_TRACE5(( "  line to (%.2f, %.2f)\n",
+                        vec.x / 64.0, vec.y / 64.0 ));
+            error = func_interface->line_to( &vec, user );
+            if ( error )
+              goto Exit;
+            continue;
+          }
+
+        case FT_CURVE_TAG_CONIC:  /* consume conic arcs */
+          v_control.x = SCALED( point->x );
+          v_control.y = SCALED( point->y );
+
+        Do_Conic:
+          if ( point < limit )
+          {
+            FT_Vector  vec;
+            FT_Vector  v_middle;
+
+
+            point++;
+            tags++;
+            tag = FT_CURVE_TAG( tags[0] );
+
+            vec.x = SCALED( point->x );
+            vec.y = SCALED( point->y );
+
+            if ( tag == FT_CURVE_TAG_ON )
+            {
+              FT_TRACE5(( "  conic to (%.2f, %.2f)"
+                          " with control (%.2f, %.2f)\n",
+                          vec.x / 64.0, vec.y / 64.0,
+                          v_control.x / 64.0, v_control.y / 64.0 ));
+              error = func_interface->conic_to( &v_control, &vec, user );
+              if ( error )
+                goto Exit;
+              continue;
+            }
+
+            if ( tag != FT_CURVE_TAG_CONIC )
+              goto Invalid_Outline;
+
+            v_middle.x = ( v_control.x + vec.x ) / 2;
+            v_middle.y = ( v_control.y + vec.y ) / 2;
+
+            FT_TRACE5(( "  conic to (%.2f, %.2f)"
+                        " with control (%.2f, %.2f)\n",
+                        v_middle.x / 64.0, v_middle.y / 64.0,
+                        v_control.x / 64.0, v_control.y / 64.0 ));
+            error = func_interface->conic_to( &v_control, &v_middle, user );
+            if ( error )
+              goto Exit;
+
+            v_control = vec;
+            goto Do_Conic;
+          }
+
+          FT_TRACE5(( "  conic to (%.2f, %.2f)"
+                      " with control (%.2f, %.2f)\n",
+                      v_start.x / 64.0, v_start.y / 64.0,
+                      v_control.x / 64.0, v_control.y / 64.0 ));
+          error = func_interface->conic_to( &v_control, &v_start, user );
+          goto Close;
+
+        default:  /* FT_CURVE_TAG_CUBIC */
+          {
+            FT_Vector  vec1, vec2;
+
+
+            if ( point + 1 > limit                             ||
+                 FT_CURVE_TAG( tags[1] ) != FT_CURVE_TAG_CUBIC )
+              goto Invalid_Outline;
+
+            point += 2;
+            tags  += 2;
+
+            vec1.x = SCALED( point[-2].x );
+            vec1.y = SCALED( point[-2].y );
+
+            vec2.x = SCALED( point[-1].x );
+            vec2.y = SCALED( point[-1].y );
+
+            if ( point <= limit )
+            {
+              FT_Vector  vec;
+
+
+              vec.x = SCALED( point->x );
+              vec.y = SCALED( point->y );
+
+              FT_TRACE5(( "  cubic to (%.2f, %.2f)"
+                          " with controls (%.2f, %.2f) and (%.2f, %.2f)\n",
+                          vec.x / 64.0, vec.y / 64.0,
+                          vec1.x / 64.0, vec1.y / 64.0,
+                          vec2.x / 64.0, vec2.y / 64.0 ));
+              error = func_interface->cubic_to( &vec1, &vec2, &vec, user );
+              if ( error )
+                goto Exit;
+              continue;
+            }
+
+            FT_TRACE5(( "  cubic to (%.2f, %.2f)"
+                        " with controls (%.2f, %.2f) and (%.2f, %.2f)\n",
+                        v_start.x / 64.0, v_start.y / 64.0,
+                        vec1.x / 64.0, vec1.y / 64.0,
+                        vec2.x / 64.0, vec2.y / 64.0 ));
+            error = func_interface->cubic_to( &vec1, &vec2, &v_start, user );
+            goto Close;
+          }
+        }
+      }
+
+      /* close the contour with a line segment */
+      FT_TRACE5(( "  line to (%.2f, %.2f)\n",
+                  v_start.x / 64.0, v_start.y / 64.0 ));
+      error = func_interface->line_to( &v_start, user );
+
+   Close:
+      if ( error )
+        goto Exit;
+
+      first = last + 1;
+    }
+
+    FT_TRACE5(( "FT_Outline_Decompose: Done\n", n ));
+    return 0;
+
+  Exit:
+    FT_TRACE5(( "FT_Outline_Decompose: Error %d\n", error ));
+    return error;
+
+  Invalid_Outline:
+    return FT_THROW( Invalid_Outline );
+  }
+
+#endif /* _STANDALONE_ */
+
+
+  typedef struct  gray_TBand_
+  {
+    TPos  min, max;
+
+  } gray_TBand;
+
+    FT_DEFINE_OUTLINE_FUNCS(func_interface,
+      (FT_Outline_MoveTo_Func) gray_move_to,
+      (FT_Outline_LineTo_Func) gray_line_to,
+      (FT_Outline_ConicTo_Func)gray_conic_to,
+      (FT_Outline_CubicTo_Func)gray_cubic_to,
+      0,
+      0
+    )
+
+  static int
+  gray_convert_glyph_inner( RAS_ARG )
+  {
+
+    volatile int  error = 0;
+
+#ifdef FT_CONFIG_OPTION_PIC
+      FT_Outline_Funcs func_interface;
+      Init_Class_func_interface(&func_interface);
+#endif
+
+    if ( ft_setjmp( ras.jump_buffer ) == 0 )
+    {
+      error = FT_Outline_Decompose( &ras.outline, &func_interface, &ras );
+      if ( !ras.invalid )
+        gray_record_cell( RAS_VAR );
+    }
+    else
+      error = FT_THROW( Memory_Overflow );
+
+    return error;
+  }
+
+
+  static int
+  gray_convert_glyph( RAS_ARG )
+  {
+    gray_TBand            bands[40];
+    gray_TBand* volatile  band;
+    int volatile          n, num_bands;
+    TPos volatile         min, max, max_y;
+    FT_BBox*              clip;
+
+
+    /* Set up state in the raster object */
+    gray_compute_cbox( RAS_VAR );
+
+    /* clip to target bitmap, exit if nothing to do */
+    clip = &ras.clip_box;
+
+    if ( ras.max_ex <= clip->xMin || ras.min_ex >= clip->xMax ||
+         ras.max_ey <= clip->yMin || ras.min_ey >= clip->yMax )
+      return 0;
+
+    if ( ras.min_ex < clip->xMin ) ras.min_ex = clip->xMin;
+    if ( ras.min_ey < clip->yMin ) ras.min_ey = clip->yMin;
+
+    if ( ras.max_ex > clip->xMax ) ras.max_ex = clip->xMax;
+    if ( ras.max_ey > clip->yMax ) ras.max_ey = clip->yMax;
+
+    ras.count_ex = ras.max_ex - ras.min_ex;
+    ras.count_ey = ras.max_ey - ras.min_ey;
+
+    /* set up vertical bands */
+    num_bands = (int)( ( ras.max_ey - ras.min_ey ) / ras.band_size );
+    if ( num_bands == 0 )
+      num_bands = 1;
+    if ( num_bands >= 39 )
+      num_bands = 39;
+
+    ras.band_shoot = 0;
+
+    min   = ras.min_ey;
+    max_y = ras.max_ey;
+
+    for ( n = 0; n < num_bands; n++, min = max )
+    {
+      max = min + ras.band_size;
+      if ( n == num_bands - 1 || max > max_y )
+        max = max_y;
+
+      bands[0].min = min;
+      bands[0].max = max;
+      band         = bands;
+
+      while ( band >= bands )
+      {
+        TPos  bottom, top, middle;
+        int   error;
+
+        {
+          PCell  cells_max;
+          int    yindex;
+          long   cell_start, cell_end, cell_mod;
+
+
+          ras.ycells = (PCell*)ras.buffer;
+          ras.ycount = band->max - band->min;
+
+          cell_start = sizeof ( PCell ) * ras.ycount;
+          cell_mod   = cell_start % sizeof ( TCell );
+          if ( cell_mod > 0 )
+            cell_start += sizeof ( TCell ) - cell_mod;
+
+          cell_end  = ras.buffer_size;
+          cell_end -= cell_end % sizeof ( TCell );
+
+          cells_max = (PCell)( (char*)ras.buffer + cell_end );
+          ras.cells = (PCell)( (char*)ras.buffer + cell_start );
+          if ( ras.cells >= cells_max )
+            goto ReduceBands;
+
+          ras.max_cells = cells_max - ras.cells;
+          if ( ras.max_cells < 2 )
+            goto ReduceBands;
+
+          for ( yindex = 0; yindex < ras.ycount; yindex++ )
+            ras.ycells[yindex] = NULL;
+        }
+
+        ras.num_cells = 0;
+        ras.invalid   = 1;
+        ras.min_ey    = band->min;
+        ras.max_ey    = band->max;
+        ras.count_ey  = band->max - band->min;
+
+        error = gray_convert_glyph_inner( RAS_VAR );
+
+        if ( !error )
+        {
+          gray_sweep( RAS_VAR_ &ras.target );
+          band--;
+          continue;
+        }
+        else if ( error != ErrRaster_Memory_Overflow )
+          return 1;
+
+      ReduceBands:
+        /* render pool overflow; we will reduce the render band by half */
+        bottom = band->min;
+        top    = band->max;
+        middle = bottom + ( ( top - bottom ) >> 1 );
+
+        /* This is too complex for a single scanline; there must */
+        /* be some problems.                                     */
+        if ( middle == bottom )
+        {
+#ifdef FT_DEBUG_LEVEL_TRACE
+          FT_TRACE7(( "gray_convert_glyph: rotten glyph\n" ));
+#endif
+          return 1;
+        }
+
+        if ( bottom-top >= ras.band_size )
+          ras.band_shoot++;
+
+        band[1].min = bottom;
+        band[1].max = middle;
+        band[0].min = middle;
+        band[0].max = top;
+        band++;
+      }
+    }
+
+    if ( ras.band_shoot > 8 && ras.band_size > 16 )
+      ras.band_size = ras.band_size / 2;
+
+    return 0;
+  }
+
+
+  static int
+  gray_raster_render( gray_PRaster             raster,
+                      const FT_Raster_Params*  params )
+  {
+    const FT_Outline*  outline    = (const FT_Outline*)params->source;
+    const FT_Bitmap*   target_map = params->target;
+    gray_PWorker       worker;
+
+
+    if ( !raster || !raster->buffer || !raster->buffer_size )
+      return FT_THROW( Invalid_Argument );
+
+    if ( !outline )
+      return FT_THROW( Invalid_Outline );
+
+    /* return immediately if the outline is empty */
+    if ( outline->n_points == 0 || outline->n_contours <= 0 )
+      return 0;
+
+    if ( !outline->contours || !outline->points )
+      return FT_THROW( Invalid_Outline );
+
+    if ( outline->n_points !=
+           outline->contours[outline->n_contours - 1] + 1 )
+      return FT_THROW( Invalid_Outline );
+
+    worker = raster->worker;
+
+    /* if direct mode is not set, we must have a target bitmap */
+    if ( !( params->flags & FT_RASTER_FLAG_DIRECT ) )
+    {
+      if ( !target_map )
+        return FT_THROW( Invalid_Argument );
+
+      /* nothing to do */
+      if ( !target_map->width || !target_map->rows )
+        return 0;
+
+      if ( !target_map->buffer )
+        return FT_THROW( Invalid_Argument );
+    }
+
+    /* this version does not support monochrome rendering */
+    if ( !( params->flags & FT_RASTER_FLAG_AA ) )
+      return FT_THROW( Invalid_Mode );
+
+    /* compute clipping box */
+    if ( !( params->flags & FT_RASTER_FLAG_DIRECT ) )
+    {
+      /* compute clip box from target pixmap */
+      ras.clip_box.xMin = 0;
+      ras.clip_box.yMin = 0;
+      ras.clip_box.xMax = target_map->width;
+      ras.clip_box.yMax = target_map->rows;
+    }
+    else if ( params->flags & FT_RASTER_FLAG_CLIP )
+      ras.clip_box = params->clip_box;
+    else
+    {
+      ras.clip_box.xMin = -32768L;
+      ras.clip_box.yMin = -32768L;
+      ras.clip_box.xMax =  32767L;
+      ras.clip_box.yMax =  32767L;
+    }
+
+    gray_init_cells( RAS_VAR_ raster->buffer, raster->buffer_size );
+
+    ras.outline        = *outline;
+    ras.num_cells      = 0;
+    ras.invalid        = 1;
+    ras.band_size      = raster->band_size;
+    ras.num_gray_spans = 0;
+
+    if ( params->flags & FT_RASTER_FLAG_DIRECT )
+    {
+      ras.render_span      = (FT_Raster_Span_Func)params->gray_spans;
+      ras.render_span_data = params->user;
+    }
+    else
+    {
+      ras.target           = *target_map;
+      ras.render_span      = (FT_Raster_Span_Func)gray_render_span;
+      ras.render_span_data = &ras;
+    }
+
+    return gray_convert_glyph( RAS_VAR );
+  }
+
+
+  /**** RASTER OBJECT CREATION: In stand-alone mode, we simply use *****/
+  /****                         a static object.                   *****/
+
+#ifdef _STANDALONE_
+
+  static int
+  gray_raster_new( void*       memory,
+                   FT_Raster*  araster )
+  {
+    static gray_TRaster  the_raster;
+
+    FT_UNUSED( memory );
+
+
+    *araster = (FT_Raster)&the_raster;
+    FT_MEM_ZERO( &the_raster, sizeof ( the_raster ) );
+
+    return 0;
+  }
+
+
+  static void
+  gray_raster_done( FT_Raster  raster )
+  {
+    /* nothing */
+    FT_UNUSED( raster );
+  }
+
+#else /* !_STANDALONE_ */
+
+  static int
+  gray_raster_new( FT_Memory   memory,
+                   FT_Raster*  araster )
+  {
+    FT_Error      error;
+    gray_PRaster  raster = NULL;
+
+
+    *araster = 0;
+    if ( !FT_ALLOC( raster, sizeof ( gray_TRaster ) ) )
+    {
+      raster->memory = memory;
+      *araster       = (FT_Raster)raster;
+    }
+
+    return error;
+  }
+
+
+  static void
+  gray_raster_done( FT_Raster  raster )
+  {
+    FT_Memory  memory = (FT_Memory)((gray_PRaster)raster)->memory;
+
+
+    FT_FREE( raster );
+  }
+
+#endif /* !_STANDALONE_ */
+
+
+  static void
+  gray_raster_reset( FT_Raster  raster,
+                     char*      pool_base,
+                     long       pool_size )
+  {
+    gray_PRaster  rast = (gray_PRaster)raster;
+
+
+    if ( raster )
+    {
+      if ( pool_base && pool_size >= (long)sizeof ( gray_TWorker ) + 2048 )
+      {
+        gray_PWorker  worker = (gray_PWorker)pool_base;
+
+
+        rast->worker      = worker;
+        rast->buffer      = pool_base +
+                              ( ( sizeof ( gray_TWorker ) +
+                                  sizeof ( TCell ) - 1 )  &
+                                ~( sizeof ( TCell ) - 1 ) );
+        rast->buffer_size = (long)( ( pool_base + pool_size ) -
+                                    (char*)rast->buffer ) &
+                                      ~( sizeof ( TCell ) - 1 );
+        rast->band_size   = (int)( rast->buffer_size /
+                                     ( sizeof ( TCell ) * 8 ) );
+      }
+      else
+      {
+        rast->buffer      = NULL;
+        rast->buffer_size = 0;
+        rast->worker      = NULL;
+      }
+    }
+  }
+
+
+  static int
+  gray_raster_set_mode( FT_Raster      raster,
+                        unsigned long  mode,
+                        void*          args )
+  {
+    FT_UNUSED( raster );
+    FT_UNUSED( mode );
+    FT_UNUSED( args );
+
+
+    return 0; /* nothing to do */
+  }
+
+
+  FT_DEFINE_RASTER_FUNCS(ft_grays_raster,
+    FT_GLYPH_FORMAT_OUTLINE,
+
+    (FT_Raster_New_Func)     gray_raster_new,
+    (FT_Raster_Reset_Func)   gray_raster_reset,
+    (FT_Raster_Set_Mode_Func)gray_raster_set_mode,
+    (FT_Raster_Render_Func)  gray_raster_render,
+    (FT_Raster_Done_Func)    gray_raster_done
+  )
+
+
+/* END */
+
+
+/* Local Variables: */
+/* coding: utf-8    */
+/* End:             */
diff --git a/third_party/freetype/src/smooth/ftgrays.h b/third_party/freetype/src/smooth/ftgrays.h
new file mode 100644
index 0000000000..f20f55f14b
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftgrays.h
@@ -0,0 +1,58 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftgrays.h                                                              */
+/*                                                                         */
+/*    FreeType smooth renderer declaration                                 */
+/*                                                                         */
+/*  Copyright 1996-2001 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __FTGRAYS_H__
+#define __FTGRAYS_H__
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+
+#ifdef _STANDALONE_
+#include "ftimage.h"
+#else
+#include <ft2build.h>
+#include FT_CONFIG_CONFIG_H /* for FT_CONFIG_OPTION_PIC */
+#include FT_IMAGE_H
+#endif
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* To make ftgrays.h independent from configuration files we check       */
+  /* whether FT_EXPORT_VAR has been defined already.                       */
+  /*                                                                       */
+  /* On some systems and compilers (Win32 mostly), an extra keyword is     */
+  /* necessary to compile the library as a DLL.                            */
+  /*                                                                       */
+#ifndef FT_EXPORT_VAR
+#define FT_EXPORT_VAR( x )  extern  x
+#endif
+
+  FT_EXPORT_VAR( const FT_Raster_Funcs )  ft_grays_raster;
+
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif /* __FTGRAYS_H__ */
+
+
+/* END */
diff --git a/third_party/freetype/src/smooth/ftsmerrs.h b/third_party/freetype/src/smooth/ftsmerrs.h
new file mode 100644
index 0000000000..413d2f1f70
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftsmerrs.h
@@ -0,0 +1,42 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftsmerrs.h                                                             */
+/*                                                                         */
+/*    smooth renderer error codes (specification only).                    */
+/*                                                                         */
+/*  Copyright 2001, 2012 by                                                */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* This file is used to define the smooth renderer error enumeration     */
+  /* constants.                                                            */
+  /*                                                                       */
+  /*************************************************************************/
+
+#ifndef __FTSMERRS_H__
+#define __FTSMERRS_H__
+
+#include FT_MODULE_ERRORS_H
+
+#undef __FTERRORS_H__
+
+#undef  FT_ERR_PREFIX
+#define FT_ERR_PREFIX  Smooth_Err_
+#define FT_ERR_BASE    FT_Mod_Err_Smooth
+
+#include FT_ERRORS_H
+
+#endif /* __FTSMERRS_H__ */
+
+
+/* END */
diff --git a/third_party/freetype/src/smooth/ftsmooth.c b/third_party/freetype/src/smooth/ftsmooth.c
new file mode 100644
index 0000000000..4e2dee562b
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftsmooth.c
@@ -0,0 +1,511 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftsmooth.c                                                             */
+/*                                                                         */
+/*    Anti-aliasing renderer interface (body).                             */
+/*                                                                         */
+/*  Copyright 2000-2006, 2009-2013 by                                      */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_OBJECTS_H
+#include FT_OUTLINE_H
+#include "ftsmooth.h"
+#include "ftgrays.h"
+#include "ftspic.h"
+
+#include "ftsmerrs.h"
+
+
+  /* initialize renderer -- init its raster */
+  static FT_Error
+  ft_smooth_init( FT_Renderer  render )
+  {
+    FT_Library  library = FT_MODULE_LIBRARY( render );
+
+
+    render->clazz->raster_class->raster_reset( render->raster,
+                                               library->raster_pool,
+                                               library->raster_pool_size );
+
+    return 0;
+  }
+
+
+  /* sets render-specific mode */
+  static FT_Error
+  ft_smooth_set_mode( FT_Renderer  render,
+                      FT_ULong     mode_tag,
+                      FT_Pointer   data )
+  {
+    /* we simply pass it to the raster */
+    return render->clazz->raster_class->raster_set_mode( render->raster,
+                                                         mode_tag,
+                                                         data );
+  }
+
+  /* transform a given glyph image */
+  static FT_Error
+  ft_smooth_transform( FT_Renderer       render,
+                       FT_GlyphSlot      slot,
+                       const FT_Matrix*  matrix,
+                       const FT_Vector*  delta )
+  {
+    FT_Error  error = FT_Err_Ok;
+
+
+    if ( slot->format != render->glyph_format )
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    if ( matrix )
+      FT_Outline_Transform( &slot->outline, matrix );
+
+    if ( delta )
+      FT_Outline_Translate( &slot->outline, delta->x, delta->y );
+
+  Exit:
+    return error;
+  }
+
+
+  /* return the glyph's control box */
+  static void
+  ft_smooth_get_cbox( FT_Renderer   render,
+                      FT_GlyphSlot  slot,
+                      FT_BBox*      cbox )
+  {
+    FT_MEM_ZERO( cbox, sizeof ( *cbox ) );
+
+    if ( slot->format == render->glyph_format )
+      FT_Outline_Get_CBox( &slot->outline, cbox );
+  }
+
+
+  /* convert a slot's glyph image into a bitmap */
+  static FT_Error
+  ft_smooth_render_generic( FT_Renderer       render,
+                            FT_GlyphSlot      slot,
+                            FT_Render_Mode    mode,
+                            const FT_Vector*  origin,
+                            FT_Render_Mode    required_mode )
+  {
+    FT_Error     error;
+    FT_Outline*  outline = &slot->outline;
+    FT_Bitmap*   bitmap  = &slot->bitmap;
+    FT_Memory    memory  = render->root.memory;
+    FT_BBox      cbox;
+    FT_Pos       x_shift = 0;
+    FT_Pos       y_shift = 0;
+    FT_Pos       x_left, y_top;
+    FT_Pos       width, height, pitch;
+#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+    FT_Pos       height_org, width_org;
+#endif
+    FT_Int       hmul    = mode == FT_RENDER_MODE_LCD;
+    FT_Int       vmul    = mode == FT_RENDER_MODE_LCD_V;
+
+    FT_Raster_Params  params;
+
+    FT_Bool  have_outline_shifted = FALSE;
+    FT_Bool  have_buffer          = FALSE;
+
+
+    /* check glyph image format */
+    if ( slot->format != render->glyph_format )
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    /* check mode */
+    if ( mode != required_mode )
+    {
+      error = FT_THROW( Cannot_Render_Glyph );
+      goto Exit;
+    }
+
+    if ( origin )
+    {
+      x_shift = origin->x;
+      y_shift = origin->y;
+    }
+
+    /* compute the control box, and grid fit it */
+    /* taking into account the origin shift     */
+    FT_Outline_Get_CBox( outline, &cbox );
+
+    cbox.xMin = FT_PIX_FLOOR( cbox.xMin + x_shift );
+    cbox.yMin = FT_PIX_FLOOR( cbox.yMin + y_shift );
+    cbox.xMax = FT_PIX_CEIL( cbox.xMax + x_shift );
+    cbox.yMax = FT_PIX_CEIL( cbox.yMax + y_shift );
+
+    x_shift -= cbox.xMin;
+    y_shift -= cbox.yMin;
+
+    x_left  = cbox.xMin >> 6;
+    y_top   = cbox.yMax >> 6;
+
+    width  = (FT_ULong)( cbox.xMax - cbox.xMin ) >> 6;
+    height = (FT_ULong)( cbox.yMax - cbox.yMin ) >> 6;
+
+#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+    width_org  = width;
+    height_org = height;
+#endif
+
+    pitch = width;
+    if ( hmul )
+    {
+      width *= 3;
+      pitch  = FT_PAD_CEIL( width, 4 );
+    }
+
+    if ( vmul )
+      height *= 3;
+
+#ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+
+    if ( slot->library->lcd_filter_func )
+    {
+      FT_Int  extra = slot->library->lcd_extra;
+
+
+      if ( hmul )
+      {
+        x_shift += 64 * ( extra >> 1 );
+        x_left  -= extra >> 1;
+        width   += 3 * extra;
+        pitch    = FT_PAD_CEIL( width, 4 );
+      }
+
+      if ( vmul )
+      {
+        y_shift += 64 * ( extra >> 1 );
+        y_top   += extra >> 1;
+        height  += 3 * extra;
+      }
+    }
+
+#endif
+
+    /*
+     * XXX: on 16bit system, we return an error for huge bitmap
+     * to prevent an overflow.
+     */
+    if ( x_left > FT_INT_MAX || y_top > FT_INT_MAX ||
+         x_left < FT_INT_MIN || y_top < FT_INT_MIN )
+    {
+      error = FT_THROW( Invalid_Pixel_Size );
+      goto Exit;
+    }
+
+    /* Required check is (pitch * height < FT_ULONG_MAX),        */
+    /* but we care realistic cases only.  Always pitch <= width. */
+    if ( width > 0x7FFF || height > 0x7FFF )
+    {
+      FT_ERROR(( "ft_smooth_render_generic: glyph too large: %u x %u\n",
+                 width, height ));
+      error = FT_THROW( Raster_Overflow );
+      goto Exit;
+    }
+
+    /* release old bitmap buffer */
+    if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
+    {
+      FT_FREE( bitmap->buffer );
+      slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
+    }
+
+    /* allocate new one */
+    if ( FT_ALLOC( bitmap->buffer, (FT_ULong)pitch * height ) )
+      goto Exit;
+    else
+      have_buffer = TRUE;
+
+    slot->internal->flags |= FT_GLYPH_OWN_BITMAP;
+
+    slot->format      = FT_GLYPH_FORMAT_BITMAP;
+    slot->bitmap_left = (FT_Int)x_left;
+    slot->bitmap_top  = (FT_Int)y_top;
+
+    bitmap->pixel_mode = FT_PIXEL_MODE_GRAY;
+    bitmap->num_grays  = 256;
+    bitmap->width      = width;
+    bitmap->rows       = height;
+    bitmap->pitch      = pitch;
+
+    /* translate outline to render it into the bitmap */
+    if ( x_shift || y_shift )
+    {
+      FT_Outline_Translate( outline, x_shift, y_shift );
+      have_outline_shifted = TRUE;
+    }
+
+    /* set up parameters */
+    params.target = bitmap;
+    params.source = outline;
+    params.flags  = FT_RASTER_FLAG_AA;
+
+#ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+
+    /* implode outline if needed */
+    {
+      FT_Vector*  points     = outline->points;
+      FT_Vector*  points_end = points + outline->n_points;
+      FT_Vector*  vec;
+
+
+      if ( hmul )
+        for ( vec = points; vec < points_end; vec++ )
+          vec->x *= 3;
+
+      if ( vmul )
+        for ( vec = points; vec < points_end; vec++ )
+          vec->y *= 3;
+    }
+
+    /* render outline into the bitmap */
+    error = render->raster_render( render->raster, &params );
+
+    /* deflate outline if needed */
+    {
+      FT_Vector*  points     = outline->points;
+      FT_Vector*  points_end = points + outline->n_points;
+      FT_Vector*  vec;
+
+
+      if ( hmul )
+        for ( vec = points; vec < points_end; vec++ )
+          vec->x /= 3;
+
+      if ( vmul )
+        for ( vec = points; vec < points_end; vec++ )
+          vec->y /= 3;
+    }
+
+    if ( error )
+      goto Exit;
+
+    if ( slot->library->lcd_filter_func )
+      slot->library->lcd_filter_func( bitmap, mode, slot->library );
+
+#else /* !FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
+
+    /* render outline into bitmap */
+    error = render->raster_render( render->raster, &params );
+    if ( error )
+      goto Exit;
+
+    /* expand it horizontally */
+    if ( hmul )
+    {
+      FT_Byte*  line = bitmap->buffer;
+      FT_UInt   hh;
+
+
+      for ( hh = height_org; hh > 0; hh--, line += pitch )
+      {
+        FT_UInt   xx;
+        FT_Byte*  end = line + width;
+
+
+        for ( xx = width_org; xx > 0; xx-- )
+        {
+          FT_UInt  pixel = line[xx-1];
+
+
+          end[-3] = (FT_Byte)pixel;
+          end[-2] = (FT_Byte)pixel;
+          end[-1] = (FT_Byte)pixel;
+          end    -= 3;
+        }
+      }
+    }
+
+    /* expand it vertically */
+    if ( vmul )
+    {
+      FT_Byte*  read  = bitmap->buffer + ( height - height_org ) * pitch;
+      FT_Byte*  write = bitmap->buffer;
+      FT_UInt   hh;
+
+
+      for ( hh = height_org; hh > 0; hh-- )
+      {
+        ft_memcpy( write, read, pitch );
+        write += pitch;
+
+        ft_memcpy( write, read, pitch );
+        write += pitch;
+
+        ft_memcpy( write, read, pitch );
+        write += pitch;
+        read  += pitch;
+      }
+    }
+
+#endif /* !FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
+
+    /* everything is fine; don't deallocate buffer */
+    have_buffer = FALSE;
+
+    error = FT_Err_Ok;
+
+  Exit:
+    if ( have_outline_shifted )
+      FT_Outline_Translate( outline, -x_shift, -y_shift );
+    if ( have_buffer )
+    {
+      FT_FREE( bitmap->buffer );
+      slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
+    }
+
+    return error;
+  }
+
+
+  /* convert a slot's glyph image into a bitmap */
+  static FT_Error
+  ft_smooth_render( FT_Renderer       render,
+                    FT_GlyphSlot      slot,
+                    FT_Render_Mode    mode,
+                    const FT_Vector*  origin )
+  {
+    if ( mode == FT_RENDER_MODE_LIGHT )
+      mode = FT_RENDER_MODE_NORMAL;
+
+    return ft_smooth_render_generic( render, slot, mode, origin,
+                                     FT_RENDER_MODE_NORMAL );
+  }
+
+
+  /* convert a slot's glyph image into a horizontal LCD bitmap */
+  static FT_Error
+  ft_smooth_render_lcd( FT_Renderer       render,
+                        FT_GlyphSlot      slot,
+                        FT_Render_Mode    mode,
+                        const FT_Vector*  origin )
+  {
+    FT_Error  error;
+
+    error = ft_smooth_render_generic( render, slot, mode, origin,
+                                      FT_RENDER_MODE_LCD );
+    if ( !error )
+      slot->bitmap.pixel_mode = FT_PIXEL_MODE_LCD;
+
+    return error;
+  }
+
+
+  /* convert a slot's glyph image into a vertical LCD bitmap */
+  static FT_Error
+  ft_smooth_render_lcd_v( FT_Renderer       render,
+                          FT_GlyphSlot      slot,
+                          FT_Render_Mode    mode,
+                          const FT_Vector*  origin )
+  {
+    FT_Error  error;
+
+    error = ft_smooth_render_generic( render, slot, mode, origin,
+                                      FT_RENDER_MODE_LCD_V );
+    if ( !error )
+      slot->bitmap.pixel_mode = FT_PIXEL_MODE_LCD_V;
+
+    return error;
+  }
+
+
+  FT_DEFINE_RENDERER( ft_smooth_renderer_class,
+
+      FT_MODULE_RENDERER,
+      sizeof ( FT_RendererRec ),
+
+      "smooth",
+      0x10000L,
+      0x20000L,
+
+      0,    /* module specific interface */
+
+      (FT_Module_Constructor)ft_smooth_init,
+      (FT_Module_Destructor) 0,
+      (FT_Module_Requester)  0
+    ,
+
+    FT_GLYPH_FORMAT_OUTLINE,
+
+    (FT_Renderer_RenderFunc)   ft_smooth_render,
+    (FT_Renderer_TransformFunc)ft_smooth_transform,
+    (FT_Renderer_GetCBoxFunc)  ft_smooth_get_cbox,
+    (FT_Renderer_SetModeFunc)  ft_smooth_set_mode,
+
+    (FT_Raster_Funcs*)    &FT_GRAYS_RASTER_GET
+  )
+
+
+  FT_DEFINE_RENDERER( ft_smooth_lcd_renderer_class,
+
+      FT_MODULE_RENDERER,
+      sizeof ( FT_RendererRec ),
+
+      "smooth-lcd",
+      0x10000L,
+      0x20000L,
+
+      0,    /* module specific interface */
+
+      (FT_Module_Constructor)ft_smooth_init,
+      (FT_Module_Destructor) 0,
+      (FT_Module_Requester)  0
+    ,
+
+    FT_GLYPH_FORMAT_OUTLINE,
+
+    (FT_Renderer_RenderFunc)   ft_smooth_render_lcd,
+    (FT_Renderer_TransformFunc)ft_smooth_transform,
+    (FT_Renderer_GetCBoxFunc)  ft_smooth_get_cbox,
+    (FT_Renderer_SetModeFunc)  ft_smooth_set_mode,
+
+    (FT_Raster_Funcs*)    &FT_GRAYS_RASTER_GET
+  )
+
+  FT_DEFINE_RENDERER( ft_smooth_lcdv_renderer_class,
+
+      FT_MODULE_RENDERER,
+      sizeof ( FT_RendererRec ),
+
+      "smooth-lcdv",
+      0x10000L,
+      0x20000L,
+
+      0,    /* module specific interface */
+
+      (FT_Module_Constructor)ft_smooth_init,
+      (FT_Module_Destructor) 0,
+      (FT_Module_Requester)  0
+    ,
+
+    FT_GLYPH_FORMAT_OUTLINE,
+
+    (FT_Renderer_RenderFunc)   ft_smooth_render_lcd_v,
+    (FT_Renderer_TransformFunc)ft_smooth_transform,
+    (FT_Renderer_GetCBoxFunc)  ft_smooth_get_cbox,
+    (FT_Renderer_SetModeFunc)  ft_smooth_set_mode,
+
+    (FT_Raster_Funcs*)    &FT_GRAYS_RASTER_GET
+  )
+
+
+/* END */
diff --git a/third_party/freetype/src/smooth/ftsmooth.h b/third_party/freetype/src/smooth/ftsmooth.h
new file mode 100644
index 0000000000..3708790df1
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftsmooth.h
@@ -0,0 +1,49 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftsmooth.h                                                             */
+/*                                                                         */
+/*    Anti-aliasing renderer interface (specification).                    */
+/*                                                                         */
+/*  Copyright 1996-2001 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __FTSMOOTH_H__
+#define __FTSMOOTH_H__
+
+
+#include <ft2build.h>
+#include FT_RENDER_H
+
+
+FT_BEGIN_HEADER
+
+
+#ifndef FT_CONFIG_OPTION_NO_STD_RASTER
+  FT_DECLARE_RENDERER( ft_std_renderer_class )
+#endif
+
+#ifndef FT_CONFIG_OPTION_NO_SMOOTH_RASTER
+  FT_DECLARE_RENDERER( ft_smooth_renderer_class )
+
+  FT_DECLARE_RENDERER( ft_smooth_lcd_renderer_class )
+
+  FT_DECLARE_RENDERER( ft_smooth_lcd_v_renderer_class )
+#endif
+
+
+
+FT_END_HEADER
+
+#endif /* __FTSMOOTH_H__ */
+
+
+/* END */
diff --git a/third_party/freetype/src/smooth/ftspic.c b/third_party/freetype/src/smooth/ftspic.c
new file mode 100644
index 0000000000..67a2b8310c
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftspic.c
@@ -0,0 +1,118 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftspic.c                                                               */
+/*                                                                         */
+/*    The FreeType position independent code services for smooth module.   */
+/*                                                                         */
+/*  Copyright 2009, 2010, 2012, 2013 by                                    */
+/*  Oran Agra and Mickey Gabel.                                            */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_INTERNAL_OBJECTS_H
+#include "ftspic.h"
+#include "ftsmerrs.h"
+
+
+#ifdef FT_CONFIG_OPTION_PIC
+
+  /* forward declaration of PIC init functions from ftgrays.c */
+  void
+  FT_Init_Class_ft_grays_raster( FT_Raster_Funcs*  funcs );
+
+
+  void
+  ft_smooth_renderer_class_pic_free( FT_Library  library )
+  {
+    FT_PIC_Container*  pic_container = &library->pic_container;
+    FT_Memory          memory        = library->memory;
+
+
+    if ( pic_container->smooth )
+    {
+      SmoothPIC*  container = (SmoothPIC*)pic_container->smooth;
+
+
+      if ( --container->ref_count )
+        return;
+
+      FT_FREE( container );
+      pic_container->smooth = NULL;
+    }
+  }
+
+
+  FT_Error
+  ft_smooth_renderer_class_pic_init( FT_Library  library )
+  {
+    FT_PIC_Container*  pic_container = &library->pic_container;
+    FT_Error           error         = FT_Err_Ok;
+    SmoothPIC*         container     = NULL;
+    FT_Memory          memory        = library->memory;
+
+
+    /* since this function also serve smooth_lcd and smooth_lcdv renderers,
+       it implements reference counting */
+    if ( pic_container->smooth )
+    {
+      ((SmoothPIC*)pic_container->smooth)->ref_count++;
+      return error;
+    }
+
+    /* allocate pointer, clear and set global container pointer */
+    if ( FT_ALLOC( container, sizeof ( *container ) ) )
+      return error;
+    FT_MEM_SET( container, 0, sizeof ( *container ) );
+    pic_container->smooth = container;
+
+    container->ref_count = 1;
+
+    /* initialize pointer table -                       */
+    /* this is how the module usually expects this data */
+    FT_Init_Class_ft_grays_raster( &container->ft_grays_raster );
+
+    return error;
+  }
+
+
+  /* re-route these init and free functions to the above functions */
+  FT_Error
+  ft_smooth_lcd_renderer_class_pic_init( FT_Library  library )
+  {
+    return ft_smooth_renderer_class_pic_init( library );
+  }
+
+
+  void
+  ft_smooth_lcd_renderer_class_pic_free( FT_Library  library )
+  {
+    ft_smooth_renderer_class_pic_free( library );
+  }
+
+
+  FT_Error
+  ft_smooth_lcdv_renderer_class_pic_init( FT_Library  library )
+  {
+    return ft_smooth_renderer_class_pic_init( library );
+  }
+
+
+  void
+  ft_smooth_lcdv_renderer_class_pic_free( FT_Library  library )
+  {
+    ft_smooth_renderer_class_pic_free( library );
+  }
+
+#endif /* FT_CONFIG_OPTION_PIC */
+
+
+/* END */
diff --git a/third_party/freetype/src/smooth/ftspic.h b/third_party/freetype/src/smooth/ftspic.h
new file mode 100644
index 0000000000..334b51c3f1
--- /dev/null
+++ b/third_party/freetype/src/smooth/ftspic.h
@@ -0,0 +1,74 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftspic.h                                                               */
+/*                                                                         */
+/*    The FreeType position independent code services for smooth module.   */
+/*                                                                         */
+/*  Copyright 2009 by                                                      */
+/*  Oran Agra and Mickey Gabel.                                            */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#ifndef __FTSPIC_H__
+#define __FTSPIC_H__
+
+
+FT_BEGIN_HEADER
+
+#include FT_INTERNAL_PIC_H
+
+#ifndef FT_CONFIG_OPTION_PIC
+
+#define FT_GRAYS_RASTER_GET  ft_grays_raster
+
+#else /* FT_CONFIG_OPTION_PIC */
+
+  typedef struct  SmoothPIC_
+  {
+    int              ref_count;
+    FT_Raster_Funcs  ft_grays_raster;
+
+  } SmoothPIC;
+
+
+#define GET_PIC( lib ) \
+          ( (SmoothPIC*)( (lib)->pic_container.smooth ) )
+#define FT_GRAYS_RASTER_GET  ( GET_PIC( library )->ft_grays_raster )
+
+
+  /* see ftspic.c for the implementation */
+  void
+  ft_smooth_renderer_class_pic_free( FT_Library  library );
+
+  void
+  ft_smooth_lcd_renderer_class_pic_free( FT_Library  library );
+
+  void
+  ft_smooth_lcdv_renderer_class_pic_free( FT_Library  library );
+
+  FT_Error
+  ft_smooth_renderer_class_pic_init( FT_Library  library );
+
+  FT_Error
+  ft_smooth_lcd_renderer_class_pic_init( FT_Library  library );
+
+  FT_Error
+  ft_smooth_lcdv_renderer_class_pic_init( FT_Library  library );
+
+#endif /* FT_CONFIG_OPTION_PIC */
+
+ /* */
+
+FT_END_HEADER
+
+#endif /* __FTSPIC_H__ */
+
+
+/* END */
diff --git a/third_party/freetype/src/smooth/smooth.c b/third_party/freetype/src/smooth/smooth.c
new file mode 100644
index 0000000000..a8ac51f9f8
--- /dev/null
+++ b/third_party/freetype/src/smooth/smooth.c
@@ -0,0 +1,27 @@
+/***************************************************************************/
+/*                                                                         */
+/*  smooth.c                                                               */
+/*                                                                         */
+/*    FreeType anti-aliasing rasterer module component (body only).        */
+/*                                                                         */
+/*  Copyright 1996-2001 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#define FT_MAKE_OPTION_SINGLE_OBJECT
+
+#include <ft2build.h>
+#include "ftspic.c"
+#include "ftgrays.c"
+#include "ftsmooth.c"
+
+
+/* END */