1 files changed, 69 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_InvertOperation.cc b/source/blender/compositor/operations/COM_InvertOperation.cc
new file mode 100644
index 00000000000..d9f436a3e28
--- /dev/null
+++ b/source/blender/compositor/operations/COM_InvertOperation.cc
@@ -0,0 +1,69 @@
+/*
+ * 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_InvertOperation.h"
+
+InvertOperation::InvertOperation()
+{
+  this->addInputSocket(COM_DT_VALUE);
+  this->addInputSocket(COM_DT_COLOR);
+  this->addOutputSocket(COM_DT_COLOR);
+  this->m_inputValueProgram = nullptr;
+  this->m_inputColorProgram = nullptr;
+  this->m_color = true;
+  this->m_alpha = false;
+  setResolutionInputSocketIndex(1);
+}
+void InvertOperation::initExecution()
+{
+  this->m_inputValueProgram = this->getInputSocketReader(0);
+  this->m_inputColorProgram = this->getInputSocketReader(1);
+}
+
+void InvertOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
+{
+  float inputValue[4];
+  float inputColor[4];
+  this->m_inputValueProgram->readSampled(inputValue, x, y, sampler);
+  this->m_inputColorProgram->readSampled(inputColor, x, y, sampler);
+
+  const float value = inputValue[0];
+  const float invertedValue = 1.0f - value;
+
+  if (this->m_color) {
+    output[0] = (1.0f - inputColor[0]) * value + inputColor[0] * invertedValue;
+    output[1] = (1.0f - inputColor[1]) * value + inputColor[1] * invertedValue;
+    output[2] = (1.0f - inputColor[2]) * value + inputColor[2] * invertedValue;
+  }
+  else {
+    copy_v3_v3(output, inputColor);
+  }
+
+  if (this->m_alpha) {
+    output[3] = (1.0f - inputColor[3]) * value + inputColor[3] * invertedValue;
+  }
+  else {
+    output[3] = inputColor[3];
+  }
+}
+
+void InvertOperation::deinitExecution()
+{
+  this->m_inputValueProgram = nullptr;
+  this->m_inputColorProgram = nullptr;
+}