1 /****************************************************************************
   2  *
   3  * ftgrays.c
   4  *
   5  *   A new `perfect' anti-aliasing renderer (body).
   6  *
   7  * Copyright (C) 2000-2019 by
   8  * David Turner, Robert Wilhelm, and Werner Lemberg.
   9  *
  10  * This file is part of the FreeType project, and may only be used,
  11  * modified, and distributed under the terms of the FreeType project
  12  * license, LICENSE.TXT.  By continuing to use, modify, or distribute
  13  * this file you indicate that you have read the license and
  14  * understand and accept it fully.
  15  *
  16  */
  17 
  18   /**************************************************************************
  19    *
  20    * This file can be compiled without the rest of the FreeType engine, by
  21    * defining the STANDALONE_ macro when compiling it.  You also need to
  22    * put the files `ftgrays.h' and `ftimage.h' into the current
  23    * compilation directory.  Typically, you could do something like
  24    *
  25    * - copy `src/smooth/ftgrays.c' (this file) to your current directory
  26    *
  27    * - copy `include/freetype/ftimage.h' and `src/smooth/ftgrays.h' to the

   1 /****************************************************************************
   2  *
   3  * ftgrays.c
   4  *
   5  *   A new `perfect' anti-aliasing renderer (body).
   6  *
   7  * Copyright (C) 2000-2020 by
   8  * David Turner, Robert Wilhelm, and Werner Lemberg.
   9  *
  10  * This file is part of the FreeType project, and may only be used,
  11  * modified, and distributed under the terms of the FreeType project
  12  * license, LICENSE.TXT.  By continuing to use, modify, or distribute
  13  * this file you indicate that you have read the license and
  14  * understand and accept it fully.
  15  *
  16  */
  17 
  18   /**************************************************************************
  19    *
  20    * This file can be compiled without the rest of the FreeType engine, by
  21    * defining the STANDALONE_ macro when compiling it.  You also need to
  22    * put the files `ftgrays.h' and `ftimage.h' into the current
  23    * compilation directory.  Typically, you could do something like
  24    *
  25    * - copy `src/smooth/ftgrays.c' (this file) to your current directory
  26    *
  27    * - copy `include/freetype/ftimage.h' and `src/smooth/ftgrays.h' to the