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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 2011, Blender Foundation.
*/
#include "COM_GlareThresholdOperation.h"
#include "BLI_math.h"
#include "IMB_colormanagement.h"
namespace blender::compositor {
GlareThresholdOperation::GlareThresholdOperation()
{
this->addInputSocket(DataType::Color, ResizeMode::FitAny);
this->addOutputSocket(DataType::Color);
this->m_inputProgram = nullptr;
}
void GlareThresholdOperation::determineResolution(unsigned int resolution[2],
unsigned int preferredResolution[2])
{
NodeOperation::determineResolution(resolution, preferredResolution);
resolution[0] = resolution[0] / (1 << this->m_settings->quality);
resolution[1] = resolution[1] / (1 << this->m_settings->quality);
}
void GlareThresholdOperation::initExecution()
{
this->m_inputProgram = this->getInputSocketReader(0);
}
void GlareThresholdOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
const float threshold = this->m_settings->threshold;
this->m_inputProgram->readSampled(output, x, y, sampler);
if (IMB_colormanagement_get_luminance(output) >= threshold) {
output[0] -= threshold;
output[1] -= threshold;
output[2] -= threshold;
output[0] = MAX2(output[0], 0.0f);
output[1] = MAX2(output[1], 0.0f);
output[2] = MAX2(output[2], 0.0f);
}
else {
zero_v3(output);
}
}
void GlareThresholdOperation::deinitExecution()
{
this->m_inputProgram = nullptr;
}
} // namespace blender::compositor
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