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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "COM_ConvolutionEdgeFilterOperation.h"
namespace blender::compositor {
void ConvolutionEdgeFilterOperation::execute_pixel(float output[4], int x, int y, void * /*data*/)
{
float in1[4], in2[4], res1[4] = {0.0}, res2[4] = {0.0};
int x1 = x - 1;
int x2 = x;
int x3 = x + 1;
int y1 = y - 1;
int y2 = y;
int y3 = y + 1;
CLAMP(x1, 0, get_width() - 1);
CLAMP(x2, 0, get_width() - 1);
CLAMP(x3, 0, get_width() - 1);
CLAMP(y1, 0, get_height() - 1);
CLAMP(y2, 0, get_height() - 1);
CLAMP(y3, 0, get_height() - 1);
float value[4];
input_value_operation_->read(value, x2, y2, nullptr);
float mval = 1.0f - value[0];
input_operation_->read(in1, x1, y1, nullptr);
madd_v3_v3fl(res1, in1, filter_[0]);
madd_v3_v3fl(res2, in1, filter_[0]);
input_operation_->read(in1, x2, y1, nullptr);
madd_v3_v3fl(res1, in1, filter_[1]);
madd_v3_v3fl(res2, in1, filter_[3]);
input_operation_->read(in1, x3, y1, nullptr);
madd_v3_v3fl(res1, in1, filter_[2]);
madd_v3_v3fl(res2, in1, filter_[6]);
input_operation_->read(in1, x1, y2, nullptr);
madd_v3_v3fl(res1, in1, filter_[3]);
madd_v3_v3fl(res2, in1, filter_[1]);
input_operation_->read(in2, x2, y2, nullptr);
madd_v3_v3fl(res1, in2, filter_[4]);
madd_v3_v3fl(res2, in2, filter_[4]);
input_operation_->read(in1, x3, y2, nullptr);
madd_v3_v3fl(res1, in1, filter_[5]);
madd_v3_v3fl(res2, in1, filter_[7]);
input_operation_->read(in1, x1, y3, nullptr);
madd_v3_v3fl(res1, in1, filter_[6]);
madd_v3_v3fl(res2, in1, filter_[2]);
input_operation_->read(in1, x2, y3, nullptr);
madd_v3_v3fl(res1, in1, filter_[7]);
madd_v3_v3fl(res2, in1, filter_[5]);
input_operation_->read(in1, x3, y3, nullptr);
madd_v3_v3fl(res1, in1, filter_[8]);
madd_v3_v3fl(res2, in1, filter_[8]);
output[0] = sqrt(res1[0] * res1[0] + res2[0] * res2[0]);
output[1] = sqrt(res1[1] * res1[1] + res2[1] * res2[1]);
output[2] = sqrt(res1[2] * res1[2] + res2[2] * res2[2]);
output[0] = output[0] * value[0] + in2[0] * mval;
output[1] = output[1] * value[0] + in2[1] * mval;
output[2] = output[2] * value[0] + in2[2] * mval;
output[3] = in2[3];
/* Make sure we don't return negative color. */
output[0] = MAX2(output[0], 0.0f);
output[1] = MAX2(output[1], 0.0f);
output[2] = MAX2(output[2], 0.0f);
output[3] = MAX2(output[3], 0.0f);
}
void ConvolutionEdgeFilterOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const MemoryBuffer *image = inputs[IMAGE_INPUT_INDEX];
const int last_x = get_width() - 1;
const int last_y = get_height() - 1;
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const int left_offset = (it.x == 0) ? 0 : -image->elem_stride;
const int right_offset = (it.x == last_x) ? 0 : image->elem_stride;
const int down_offset = (it.y == 0) ? 0 : -image->row_stride;
const int up_offset = (it.y == last_y) ? 0 : image->row_stride;
const float *center_color = it.in(IMAGE_INPUT_INDEX);
float res1[4] = {0};
float res2[4] = {0};
const float *color = center_color + down_offset + left_offset;
madd_v3_v3fl(res1, color, filter_[0]);
copy_v3_v3(res2, res1);
color = center_color + down_offset;
madd_v3_v3fl(res1, color, filter_[1]);
madd_v3_v3fl(res2, color, filter_[3]);
color = center_color + down_offset + right_offset;
madd_v3_v3fl(res1, color, filter_[2]);
madd_v3_v3fl(res2, color, filter_[6]);
color = center_color + left_offset;
madd_v3_v3fl(res1, color, filter_[3]);
madd_v3_v3fl(res2, color, filter_[1]);
{
float rgb_filtered[3];
mul_v3_v3fl(rgb_filtered, center_color, filter_[4]);
add_v3_v3(res1, rgb_filtered);
add_v3_v3(res2, rgb_filtered);
}
color = center_color + right_offset;
madd_v3_v3fl(res1, color, filter_[5]);
madd_v3_v3fl(res2, color, filter_[7]);
color = center_color + up_offset + left_offset;
madd_v3_v3fl(res1, color, filter_[6]);
madd_v3_v3fl(res2, color, filter_[2]);
color = center_color + up_offset;
madd_v3_v3fl(res1, color, filter_[7]);
madd_v3_v3fl(res2, color, filter_[5]);
{
color = center_color + up_offset + right_offset;
float rgb_filtered[3];
mul_v3_v3fl(rgb_filtered, color, filter_[8]);
add_v3_v3(res1, rgb_filtered);
add_v3_v3(res2, rgb_filtered);
}
it.out[0] = sqrt(res1[0] * res1[0] + res2[0] * res2[0]);
it.out[1] = sqrt(res1[1] * res1[1] + res2[1] * res2[1]);
it.out[2] = sqrt(res1[2] * res1[2] + res2[2] * res2[2]);
const float factor = *it.in(FACTOR_INPUT_INDEX);
const float factor_ = 1.0f - factor;
it.out[0] = it.out[0] * factor + center_color[0] * factor_;
it.out[1] = it.out[1] * factor + center_color[1] * factor_;
it.out[2] = it.out[2] * factor + center_color[2] * factor_;
it.out[3] = center_color[3];
/* Make sure we don't return negative color. */
CLAMP4_MIN(it.out, 0.0f);
}
}
} // namespace blender::compositor
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