1 files changed, 98 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_GammaCorrectOperation.cpp b/source/blender/compositor/operations/COM_GammaCorrectOperation.cpp
new file mode 100644
index 00000000000..c83c5d0ecb6
--- /dev/null
+++ b/source/blender/compositor/operations/COM_GammaCorrectOperation.cpp
@@ -0,0 +1,98 @@
+/*
+ * 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_GammaCorrectOperation.h"
+#include "BLI_math.h"
+
+GammaCorrectOperation::GammaCorrectOperation(): NodeOperation() {
+	this->addInputSocket(COM_DT_COLOR);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->inputProgram = NULL;
+}
+void GammaCorrectOperation::initExecution() {
+	this->inputProgram = this->getInputSocketReader(0);
+}
+
+void GammaCorrectOperation::executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
+	float inputColor[4];
+	this->inputProgram->read(inputColor, x, y, sampler, inputBuffers);
+	if (inputColor[3] > 0.0f) {
+		inputColor[0] /= inputColor[3];
+		inputColor[1] /= inputColor[3];
+		inputColor[2] /= inputColor[3];
+	}
+
+	/* check for negative to avoid nan's */
+	color[0] = inputColor[0]>0.0f?inputColor[0]*inputColor[0] :0.0f;
+	color[1] = inputColor[1]>0.0f?inputColor[1]*inputColor[1] :0.0f;
+	color[2] = inputColor[2]>0.0f?inputColor[2]*inputColor[2] :0.0f;
+
+	inputColor[0] *= inputColor[3];
+	inputColor[1] *= inputColor[3];
+	inputColor[2] *= inputColor[3];
+
+	color[0] = inputColor[0];
+	color[1] = inputColor[1];
+	color[2] = inputColor[2];
+	color[3] = inputColor[3];
+}
+
+void GammaCorrectOperation::deinitExecution() {
+	this->inputProgram = NULL;
+}
+
+GammaUncorrectOperation::GammaUncorrectOperation(): NodeOperation() {
+	this->addInputSocket(COM_DT_COLOR);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->inputProgram = NULL;
+}
+void GammaUncorrectOperation::initExecution() {
+	this->inputProgram = this->getInputSocketReader(0);
+}
+
+void GammaUncorrectOperation::executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
+	float inputColor[4];
+	this->inputProgram->read(inputColor, x, y, sampler, inputBuffers);
+
+	if (inputColor[3] > 0.0f) {
+		inputColor[0] /= inputColor[3];
+		inputColor[1] /= inputColor[3];
+		inputColor[2] /= inputColor[3];
+	}
+
+	color[0] = inputColor[0]>0.0f?sqrtf(inputColor[0]) :0.0f;
+	color[1] = inputColor[1]>0.0f?sqrtf(inputColor[1]) :0.0f;
+	color[2] = inputColor[2]>0.0f?sqrtf(inputColor[2]) :0.0f;
+
+	inputColor[0] *= inputColor[3];
+	inputColor[1] *= inputColor[3];
+	inputColor[2] *= inputColor[3];
+
+	color[0] = inputColor[0];
+	color[1] = inputColor[1];
+	color[2] = inputColor[2];
+	color[3] = inputColor[3];
+}
+
+void GammaUncorrectOperation::deinitExecution() {
+	this->inputProgram = NULL;
+}