
/* !!!! AUTOGENERATED FILE generated by svg-12-porter-duff.rb !!!!! 
 *
 * This file is an image processing operation for GEGL
 *
 * GEGL is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * GEGL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
 *
 *  Copyright 2006, 2007 Øyvind Kolås <pippin@gimp.org>
 *            2007 John Marshall  
 *
 * SVG rendering modes; see:
 *     http://www.w3.org/TR/SVG12/rendering.html
 *     http://www.w3.org/TR/2004/WD-SVG12-20041027/rendering.html#comp-op-prop
 *
 *     aA = aux(src) alpha      aB = in(dst) alpha      aD = out alpha
 *     cA = aux(src) colour     cB = in(dst) colour     cD = out colour
 *
 * !!!! AUTOGENERATED FILE !!!!!
 */
#include "config.h"
#include <glib/gi18n-lib.h>


#ifdef GEGL_CHANT_PROPERTIES

/* no properties */

#else

#define GEGL_CHANT_TYPE_POINT_COMPOSER
#define GEGL_CHANT_C_FILE        "clear.c"

#include "gegl-chant.h"

static void prepare (GeglOperation *operation)
{
  Babl *format = babl_format ("RaGaBaA float");

  gegl_operation_set_format (operation, "input", format);
  gegl_operation_set_format (operation, "aux", format);
  gegl_operation_set_format (operation, "output", format);
}

static gboolean
process (GeglOperation        *op,
          void                *in_buf,
          void                *aux_buf,
          void                *out_buf,
          glong                n_pixels,
          const GeglRectangle *roi)
{
  gint i;
  gfloat *in = in_buf;
  gfloat *aux = aux_buf;
  gfloat *out = out_buf;

  if (aux==NULL)
    return TRUE;

  for (i = 0; i < n_pixels; i++)
    {
      gint   j;
      gfloat aA, aB, aD;

      aB = in[3];
      aA = aux[3];
      aD = 0.0;

      for (j = 0; j < 3; j++)
        {
          gfloat cA, cB;

          cB = in[j];
          cA = aux[j];
          out[j] = 0.0;
        }
      out[3] = aD;
      in  += 4;
      aux += 4;
      out += 4;
    }
  return TRUE;
}

#ifdef HAS_G4FLOAT

static gboolean
process_simd (GeglOperation       *op,
              void                *in_buf,
              void                *aux_buf,
              void                *out_buf,
              glong                n_pixels,
              const GeglRectangle *roi)
{
  g4float *A = aux_buf;
  g4float *B = in_buf;
  g4float *D = out_buf;

  if (B==NULL || n_pixels == 0)
    return TRUE;
    
  while (n_pixels--)
    {
      *D = g4float_zero;

      A++; B++; D++;
    }

  return TRUE;
}

#endif




static void
gegl_chant_class_init (GeglChantClass *klass)
{
  GeglOperationClass              *operation_class;
  GeglOperationPointComposerClass *point_composer_class;

  operation_class      = GEGL_OPERATION_CLASS (klass);
  point_composer_class = GEGL_OPERATION_POINT_COMPOSER_CLASS (klass);

  point_composer_class->process = process;
  operation_class->prepare = prepare;

#ifdef HAS_G4FLOAT
  gegl_operation_class_add_processor (operation_class,
                                      G_CALLBACK (process_simd), "simd");
#endif


  operation_class->name        = "gegl:clear";
  operation_class->description =
        _("Porter Duff operation clear (d = 0.0)");
  operation_class->categories  = "compositors:porter-duff";
}

#endif
