Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 168 insertions, 0 deletions

diff --git a/app/operations/layer-modes/gimpoperationdissolve.c b/app/operations/layer-modes/gimpoperationdissolve.c
new file mode 100644
index 0000000..293fade
--- /dev/null
+++ b/app/operations/layer-modes/gimpoperationdissolve.c
@@ -0,0 +1,168 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationdissolve.c
+ * Copyright (C) 2012 Ville Sokk <ville.sokk@gmail.com>
+ *               2012 Øyvind Kolås <pippin@gimp.org>
+ *               2003 Helvetix Victorinox
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl-plugin.h>
+
+#include "../operations-types.h"
+
+#include "gimpoperationdissolve.h"
+
+
+#define RANDOM_TABLE_SIZE 4096
+
+
+static gboolean                   gimp_operation_dissolve_process             (GeglOperation          *op,
+                                                                               void                   *in,
+                                                                               void                   *layer,
+                                                                               void                   *mask,
+                                                                               void                   *out,
+                                                                               glong                   samples,
+                                                                               const GeglRectangle    *result,
+                                                                               gint                    level);
+static GimpLayerCompositeRegion   gimp_operation_dissolve_get_affected_region (GimpOperationLayerMode *layer_mode);
+
+
+G_DEFINE_TYPE (GimpOperationDissolve, gimp_operation_dissolve,
+               GIMP_TYPE_OPERATION_LAYER_MODE)
+
+
+static gint32 random_table[RANDOM_TABLE_SIZE];
+
+
+static void
+gimp_operation_dissolve_class_init (GimpOperationDissolveClass *klass)
+{
+  GeglOperationClass          *operation_class  = GEGL_OPERATION_CLASS (klass);
+  GimpOperationLayerModeClass *layer_mode_class = GIMP_OPERATION_LAYER_MODE_CLASS (klass);
+  GRand                       *gr;
+  gint                         i;
+
+  gegl_operation_class_set_keys (operation_class,
+                                 "name",        "gimp:dissolve",
+                                 "description", "GIMP dissolve mode operation",
+                                 "categories",  "compositors",
+                                 NULL);
+
+  layer_mode_class->process             = gimp_operation_dissolve_process;
+  layer_mode_class->get_affected_region = gimp_operation_dissolve_get_affected_region;
+
+  /* generate a table of random seeds */
+  gr = g_rand_new_with_seed (314159265);
+  for (i = 0; i < RANDOM_TABLE_SIZE; i++)
+    random_table[i] = g_rand_int (gr);
+
+  g_rand_free (gr);
+}
+
+static void
+gimp_operation_dissolve_init (GimpOperationDissolve *self)
+{
+}
+
+static gboolean
+gimp_operation_dissolve_process (GeglOperation       *op,
+                                 void                *in_p,
+                                 void                *layer_p,
+                                 void                *mask_p,
+                                 void                *out_p,
+                                 glong                samples,
+                                 const GeglRectangle *result,
+                                 gint                 level)
+{
+  GimpOperationLayerMode *layer_mode = (gpointer) op;
+  gfloat                 *in         = in_p;
+  gfloat                 *out        = out_p;
+  gfloat                 *layer      = layer_p;
+  gfloat                 *mask       = mask_p;
+  gfloat                  opacity    = layer_mode->opacity;
+  const gboolean          has_mask   = mask != NULL;
+  gint                    x, y;
+
+  for (y = result->y; y < result->y + result->height; y++)
+    {
+      GRand *gr = g_rand_new_with_seed (random_table[y % RANDOM_TABLE_SIZE]);
+
+      /* fast forward through the rows pseudo random sequence */
+      for (x = 0; x < result->x; x++)
+        g_rand_int (gr);
+
+      for (x = result->x; x < result->x + result->width; x++)
+        {
+          gfloat value = layer[ALPHA] * opacity * 255;
+
+          if (has_mask)
+            value *= *mask;
+
+          if (g_rand_int_range (gr, 0, 255) >= value)
+            {
+              out[0] = in[0];
+              out[1] = in[1];
+              out[2] = in[2];
+
+              if (layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_UNION ||
+                  layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP)
+                {
+                  out[3] = in[3];
+                }
+              else
+                {
+                  out[3] = 0.0f;
+                }
+            }
+          else
+            {
+              out[0] = layer[0];
+              out[1] = layer[1];
+              out[2] = layer[2];
+
+              if (layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_UNION ||
+                  layer_mode->composite_mode == GIMP_LAYER_COMPOSITE_CLIP_TO_LAYER)
+                {
+                  out[3] = 1.0f;
+                }
+              else
+                {
+                  out[3] = in[3];
+                }
+            }
+
+          in    += 4;
+          layer += 4;
+          out   += 4;
+
+          if (has_mask)
+            mask++;
+        }
+
+      g_rand_free (gr);
+    }
+
+  return TRUE;
+}
+
+static GimpLayerCompositeRegion
+gimp_operation_dissolve_get_affected_region (GimpOperationLayerMode *layer_mode)
+{
+  return GIMP_LAYER_COMPOSITE_REGION_SOURCE;
+}