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/*
* 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 2020, Blender Foundation.
*/
#include "COM_ColorExposureOperation.h"
ExposureOperation::ExposureOperation()
{
this->addInputSocket(COM_DT_COLOR);
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_COLOR);
this->m_inputProgram = nullptr;
}
void ExposureOperation::initExecution()
{
this->m_inputProgram = this->getInputSocketReader(0);
this->m_inputExposureProgram = this->getInputSocketReader(1);
}
void ExposureOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float inputValue[4];
float inputExposure[4];
this->m_inputProgram->readSampled(inputValue, x, y, sampler);
this->m_inputExposureProgram->readSampled(inputExposure, x, y, sampler);
const float exposure = pow(2, inputExposure[0]);
output[0] = inputValue[0] * exposure;
output[1] = inputValue[1] * exposure;
output[2] = inputValue[2] * exposure;
output[3] = inputValue[3];
}
void ExposureOperation::deinitExecution()
{
this->m_inputProgram = nullptr;
this->m_inputExposureProgram = nullptr;
}
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