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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "COM_GlareThresholdOperation.h"
#include "IMB_colormanagement.h"
namespace blender::compositor {
GlareThresholdOperation::GlareThresholdOperation()
{
this->add_input_socket(DataType::Color, ResizeMode::FitAny);
this->add_output_socket(DataType::Color);
input_program_ = nullptr;
}
void GlareThresholdOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
{
NodeOperation::determine_canvas(preferred_area, r_area);
const int width = BLI_rcti_size_x(&r_area) / (1 << settings_->quality);
const int height = BLI_rcti_size_y(&r_area) / (1 << settings_->quality);
r_area.xmax = r_area.xmin + width;
r_area.ymax = r_area.ymin + height;
}
void GlareThresholdOperation::init_execution()
{
input_program_ = this->get_input_socket_reader(0);
}
void GlareThresholdOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
const float threshold = settings_->threshold;
input_program_->read_sampled(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::deinit_execution()
{
input_program_ = nullptr;
}
void GlareThresholdOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const float threshold = settings_->threshold;
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const float *color = it.in(0);
if (IMB_colormanagement_get_luminance(color) >= threshold) {
it.out[0] = color[0] - threshold;
it.out[1] = color[1] - threshold;
it.out[2] = color[2] - threshold;
CLAMP3_MIN(it.out, 0.0f);
}
else {
zero_v3(it.out);
}
}
}
} // namespace blender::compositor
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