1 files changed, 117 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ColorSpillOperation.cc b/source/blender/compositor/operations/COM_ColorSpillOperation.cc
new file mode 100644
index 00000000000..8139d71c637
--- /dev/null
+++ b/source/blender/compositor/operations/COM_ColorSpillOperation.cc
@@ -0,0 +1,117 @@
+/*
+ * 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 2
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright 2011, Blender Foundation.
+ */
+
+#include "COM_ColorSpillOperation.h"
+#include "BLI_math.h"
+#define AVG(a, b) ((a + b) / 2)
+
+ColorSpillOperation::ColorSpillOperation()
+{
+  addInputSocket(COM_DT_COLOR);
+  addInputSocket(COM_DT_VALUE);
+  addOutputSocket(COM_DT_COLOR);
+
+  this->m_inputImageReader = nullptr;
+  this->m_inputFacReader = nullptr;
+  this->m_spillChannel = 1;  // GREEN
+  this->m_spillMethod = 0;
+}
+
+void ColorSpillOperation::initExecution()
+{
+  this->m_inputImageReader = this->getInputSocketReader(0);
+  this->m_inputFacReader = this->getInputSocketReader(1);
+  if (this->m_spillChannel == 0) {
+    this->m_rmut = -1.0f;
+    this->m_gmut = 1.0f;
+    this->m_bmut = 1.0f;
+    this->m_channel2 = 1;
+    this->m_channel3 = 2;
+    if (this->m_settings->unspill == 0) {
+      this->m_settings->uspillr = 1.0f;
+      this->m_settings->uspillg = 0.0f;
+      this->m_settings->uspillb = 0.0f;
+    }
+  }
+  else if (this->m_spillChannel == 1) {
+    this->m_rmut = 1.0f;
+    this->m_gmut = -1.0f;
+    this->m_bmut = 1.0f;
+    this->m_channel2 = 0;
+    this->m_channel3 = 2;
+    if (this->m_settings->unspill == 0) {
+      this->m_settings->uspillr = 0.0f;
+      this->m_settings->uspillg = 1.0f;
+      this->m_settings->uspillb = 0.0f;
+    }
+  }
+  else {
+    this->m_rmut = 1.0f;
+    this->m_gmut = 1.0f;
+    this->m_bmut = -1.0f;
+
+    this->m_channel2 = 0;
+    this->m_channel3 = 1;
+    if (this->m_settings->unspill == 0) {
+      this->m_settings->uspillr = 0.0f;
+      this->m_settings->uspillg = 0.0f;
+      this->m_settings->uspillb = 1.0f;
+    }
+  }
+}
+
+void ColorSpillOperation::deinitExecution()
+{
+  this->m_inputImageReader = nullptr;
+  this->m_inputFacReader = nullptr;
+}
+
+void ColorSpillOperation::executePixelSampled(float output[4],
+                                              float x,
+                                              float y,
+                                              PixelSampler sampler)
+{
+  float fac[4];
+  float input[4];
+  this->m_inputFacReader->readSampled(fac, x, y, sampler);
+  this->m_inputImageReader->readSampled(input, x, y, sampler);
+  float rfac = MIN2(1.0f, fac[0]);
+  float map;
+
+  switch (this->m_spillMethod) {
+    case 0: /* simple */
+      map = rfac * (input[this->m_spillChannel] -
+                    (this->m_settings->limscale * input[this->m_settings->limchan]));
+      break;
+    default: /* average */
+      map = rfac *
+            (input[this->m_spillChannel] -
+             (this->m_settings->limscale * AVG(input[this->m_channel2], input[this->m_channel3])));
+      break;
+  }
+
+  if (map > 0.0f) {
+    output[0] = input[0] + this->m_rmut * (this->m_settings->uspillr * map);
+    output[1] = input[1] + this->m_gmut * (this->m_settings->uspillg * map);
+    output[2] = input[2] + this->m_bmut * (this->m_settings->uspillb * map);
+    output[3] = input[3];
+  }
+  else {
+    copy_v4_v4(output, input);
+  }
+}