diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc')
-rw-r--r-- | source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc new file mode 100644 index 00000000000..44eef1e19cd --- /dev/null +++ b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc @@ -0,0 +1,81 @@ +/* + * 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_ColorBalanceASCCDLOperation.h" +#include "BLI_math.h" + +inline float colorbalance_cdl(float in, float offset, float power, float slope) +{ + float x = in * slope + offset; + + /* prevent NaN */ + if (x < 0.0f) { + x = 0.0f; + } + + return powf(x, power); +} + +ColorBalanceASCCDLOperation::ColorBalanceASCCDLOperation() +{ + this->addInputSocket(COM_DT_VALUE); + this->addInputSocket(COM_DT_COLOR); + this->addOutputSocket(COM_DT_COLOR); + this->m_inputValueOperation = nullptr; + this->m_inputColorOperation = nullptr; + this->setResolutionInputSocketIndex(1); +} + +void ColorBalanceASCCDLOperation::initExecution() +{ + this->m_inputValueOperation = this->getInputSocketReader(0); + this->m_inputColorOperation = this->getInputSocketReader(1); +} + +void ColorBalanceASCCDLOperation::executePixelSampled(float output[4], + float x, + float y, + PixelSampler sampler) +{ + float inputColor[4]; + float value[4]; + + this->m_inputValueOperation->readSampled(value, x, y, sampler); + this->m_inputColorOperation->readSampled(inputColor, x, y, sampler); + + float fac = value[0]; + fac = MIN2(1.0f, fac); + const float mfac = 1.0f - fac; + + output[0] = mfac * inputColor[0] + + fac * colorbalance_cdl( + inputColor[0], this->m_offset[0], this->m_power[0], this->m_slope[0]); + output[1] = mfac * inputColor[1] + + fac * colorbalance_cdl( + inputColor[1], this->m_offset[1], this->m_power[1], this->m_slope[1]); + output[2] = mfac * inputColor[2] + + fac * colorbalance_cdl( + inputColor[2], this->m_offset[2], this->m_power[2], this->m_slope[2]); + output[3] = inputColor[3]; +} + +void ColorBalanceASCCDLOperation::deinitExecution() +{ + this->m_inputValueOperation = nullptr; + this->m_inputColorOperation = nullptr; +} |