diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_GammaOperation.cpp')
-rw-r--r-- | source/blender/compositor/operations/COM_GammaOperation.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_GammaOperation.cpp b/source/blender/compositor/operations/COM_GammaOperation.cpp new file mode 100644 index 00000000000..eaa56c2f31a --- /dev/null +++ b/source/blender/compositor/operations/COM_GammaOperation.cpp @@ -0,0 +1,56 @@ +/* + * 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_GammaOperation.h" +#include "BLI_math.h" + +GammaOperation::GammaOperation(): NodeOperation() { + this->addInputSocket(COM_DT_COLOR); + this->addInputSocket(COM_DT_VALUE); + this->addOutputSocket(COM_DT_COLOR); + this->inputProgram = NULL; + this->inputGammaProgram = NULL; +} +void GammaOperation::initExecution() { + this->inputProgram = this->getInputSocketReader(0); + this->inputGammaProgram = this->getInputSocketReader(1); +} + +void GammaOperation::executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) { + float inputValue[4]; + float inputGamma[4]; + + this->inputProgram->read(inputValue, x, y, sampler, inputBuffers); + this->inputGammaProgram->read(inputGamma, x, y, sampler, inputBuffers); + const float gamma = inputGamma[0]; + /* check for negative to avoid nan's */ + color[0] = inputValue[0]>0.0f?pow(inputValue[0], gamma):inputValue[0]; + color[1] = inputValue[1]>0.0f?pow(inputValue[1], gamma):inputValue[1]; + color[2] = inputValue[2]>0.0f?pow(inputValue[2], gamma):inputValue[2]; + + color[3] = inputValue[3]; +} + +void GammaOperation::deinitExecution() { + this->inputProgram = NULL; + this->inputGammaProgram = NULL; +} |