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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_ColorCurveOperation.h"
#include "BKE_colortools.h"
#include "MEM_guardedalloc.h"
namespace blender::compositor {
ColorCurveOperation::ColorCurveOperation()
{
this->addInputSocket(DataType::Value);
this->addInputSocket(DataType::Color);
this->addInputSocket(DataType::Color);
this->addInputSocket(DataType::Color);
this->addOutputSocket(DataType::Color);
this->m_inputFacProgram = nullptr;
this->m_inputImageProgram = nullptr;
this->m_inputBlackProgram = nullptr;
this->m_inputWhiteProgram = nullptr;
this->setResolutionInputSocketIndex(1);
}
void ColorCurveOperation::initExecution()
{
CurveBaseOperation::initExecution();
this->m_inputFacProgram = this->getInputSocketReader(0);
this->m_inputImageProgram = this->getInputSocketReader(1);
this->m_inputBlackProgram = this->getInputSocketReader(2);
this->m_inputWhiteProgram = this->getInputSocketReader(3);
BKE_curvemapping_premultiply(this->m_curveMapping, 0);
}
void ColorCurveOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
CurveMapping *cumap = this->m_curveMapping;
float fac[4];
float image[4];
/* local versions of cumap->black, cumap->white, cumap->bwmul */
float black[4];
float white[4];
float bwmul[3];
this->m_inputBlackProgram->readSampled(black, x, y, sampler);
this->m_inputWhiteProgram->readSampled(white, x, y, sampler);
/* get our own local bwmul value,
* since we can't be threadsafe and use cumap->bwmul & friends */
BKE_curvemapping_set_black_white_ex(black, white, bwmul);
this->m_inputFacProgram->readSampled(fac, x, y, sampler);
this->m_inputImageProgram->readSampled(image, x, y, sampler);
if (*fac >= 1.0f) {
BKE_curvemapping_evaluate_premulRGBF_ex(cumap, output, image, black, bwmul);
}
else if (*fac <= 0.0f) {
copy_v3_v3(output, image);
}
else {
float col[4];
BKE_curvemapping_evaluate_premulRGBF_ex(cumap, col, image, black, bwmul);
interp_v3_v3v3(output, image, col, *fac);
}
output[3] = image[3];
}
void ColorCurveOperation::deinitExecution()
{
CurveBaseOperation::deinitExecution();
this->m_inputFacProgram = nullptr;
this->m_inputImageProgram = nullptr;
this->m_inputBlackProgram = nullptr;
this->m_inputWhiteProgram = nullptr;
}
void ColorCurveOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
CurveMapping *cumap = this->m_curveMapping;
float bwmul[3];
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
/* Local versions of `cumap->black` and `cumap->white`. */
const float *black = it.in(2);
const float *white = it.in(3);
/* Get a local `bwmul` value, it's not threadsafe using `cumap->bwmul` and others. */
BKE_curvemapping_set_black_white_ex(black, white, bwmul);
const float fac = *it.in(0);
const float *image = it.in(1);
if (fac >= 1.0f) {
BKE_curvemapping_evaluate_premulRGBF_ex(cumap, it.out, image, black, bwmul);
}
else if (fac <= 0.0f) {
copy_v3_v3(it.out, image);
}
else {
float col[4];
BKE_curvemapping_evaluate_premulRGBF_ex(cumap, col, image, black, bwmul);
interp_v3_v3v3(it.out, image, col, fac);
}
it.out[3] = image[3];
}
}
/* Constant level curve mapping. */
ConstantLevelColorCurveOperation::ConstantLevelColorCurveOperation()
{
this->addInputSocket(DataType::Value);
this->addInputSocket(DataType::Color);
this->addOutputSocket(DataType::Color);
this->m_inputFacProgram = nullptr;
this->m_inputImageProgram = nullptr;
this->setResolutionInputSocketIndex(1);
}
void ConstantLevelColorCurveOperation::initExecution()
{
CurveBaseOperation::initExecution();
this->m_inputFacProgram = this->getInputSocketReader(0);
this->m_inputImageProgram = this->getInputSocketReader(1);
BKE_curvemapping_premultiply(this->m_curveMapping, 0);
BKE_curvemapping_set_black_white(this->m_curveMapping, this->m_black, this->m_white);
}
void ConstantLevelColorCurveOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float fac[4];
float image[4];
this->m_inputFacProgram->readSampled(fac, x, y, sampler);
this->m_inputImageProgram->readSampled(image, x, y, sampler);
if (*fac >= 1.0f) {
BKE_curvemapping_evaluate_premulRGBF(this->m_curveMapping, output, image);
}
else if (*fac <= 0.0f) {
copy_v3_v3(output, image);
}
else {
float col[4];
BKE_curvemapping_evaluate_premulRGBF(this->m_curveMapping, col, image);
interp_v3_v3v3(output, image, col, *fac);
}
output[3] = image[3];
}
void ConstantLevelColorCurveOperation::deinitExecution()
{
CurveBaseOperation::deinitExecution();
this->m_inputFacProgram = nullptr;
this->m_inputImageProgram = nullptr;
}
void ConstantLevelColorCurveOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
CurveMapping *cumap = this->m_curveMapping;
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const float fac = *it.in(0);
const float *image = it.in(1);
if (fac >= 1.0f) {
BKE_curvemapping_evaluate_premulRGBF(cumap, it.out, image);
}
else if (fac <= 0.0f) {
copy_v3_v3(it.out, image);
}
else {
float col[4];
BKE_curvemapping_evaluate_premulRGBF(cumap, col, image);
interp_v3_v3v3(it.out, image, col, fac);
}
it.out[3] = image[3];
}
}
} // namespace blender::compositor
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