1 files changed, 70 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_InvertOperation.cpp b/source/blender/compositor/operations/COM_InvertOperation.cpp
new file mode 100644
index 00000000000..a90c7b6b8d2
--- /dev/null
+++ b/source/blender/compositor/operations/COM_InvertOperation.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * 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.
+ *
+ * Contributor: 
+ *		Jeroen Bakker 
+ *		Monique Dewanchand
+ */
+
+#include "COM_InvertOperation.h"
+
+InvertOperation::InvertOperation(): NodeOperation() {
+	this->addInputSocket(COM_DT_VALUE);
+	this->addInputSocket(COM_DT_COLOR);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->inputValueProgram = NULL;
+	this->inputColorProgram = NULL;
+	this->color = true;
+	this->alpha = false;
+	setResolutionInputSocketIndex(1);
+}
+void InvertOperation::initExecution() {
+	this->inputValueProgram = this->getInputSocketReader(0);
+	this->inputColorProgram = this->getInputSocketReader(1);
+}
+
+void InvertOperation::executePixel(float* out, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
+	float inputValue[4];
+	float inputColor[4];
+	this->inputValueProgram->read(inputValue, x, y, sampler, inputBuffers);
+	this->inputColorProgram->read(inputColor, x, y, sampler, inputBuffers);
+	
+	const float value = inputValue[0];
+	const float invertedValue = 1.0f - value;
+	
+	if(color) {
+		out[0] = (1.0f - inputColor[0])*value + inputColor[0]*invertedValue;
+		out[1] = (1.0f - inputColor[1])*value + inputColor[1]*invertedValue;
+		out[2] = (1.0f - inputColor[2])*value + inputColor[2]*invertedValue;
+	} else {
+		out[0] = inputColor[0];
+		out[1] = inputColor[1];
+		out[2] = inputColor[2];
+	}
+	
+	if(alpha)
+		out[3] = (1.0f - inputColor[3])*value + inputColor[3]*invertedValue;
+	else
+		out[3] = inputColor[3];
+
+}
+
+void InvertOperation::deinitExecution() {
+	this->inputValueProgram = NULL;
+	this->inputColorProgram = NULL;
+}
+