7a395e2e7f
The last good commit wasf57e4c5b98. After this one more fix was committed, this one is preserved as well:67bd678887.
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2011 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "COM_PixelateOperation.h"
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#include <algorithm>
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namespace blender::compositor {
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PixelateOperation::PixelateOperation()
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{
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this->add_input_socket(DataType::Color);
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this->add_output_socket(DataType::Color);
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this->set_canvas_input_index(0);
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flags_.can_be_constant = true;
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pixel_size_ = 1;
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}
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void PixelateOperation::get_area_of_interest(const int /*input_idx*/,
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const rcti &output_area,
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rcti &r_input_area)
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{
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r_input_area.xmin = output_area.xmin;
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r_input_area.ymin = output_area.ymin;
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r_input_area.xmax = output_area.xmax + pixel_size_ - 1;
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r_input_area.ymax = output_area.ymax + pixel_size_ - 1;
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}
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void PixelateOperation::update_memory_buffer_partial(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs)
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{
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MemoryBuffer *image = inputs[0];
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if (image->is_a_single_elem()) {
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copy_v4_v4(output->get_elem(0, 0), image->get_elem(0, 0));
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return;
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}
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const int width = image->get_width();
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const int height = image->get_height();
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for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
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const int x_start = (it.x / pixel_size_) * pixel_size_;
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const int y_start = (it.y / pixel_size_) * pixel_size_;
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const int x_end = std::min(x_start + pixel_size_, width);
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const int y_end = std::min(y_start + pixel_size_, height);
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float4 color_accum(0, 0, 0, 0);
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for (int y = y_start; y < y_end; ++y) {
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for (int x = x_start; x < x_end; ++x) {
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float4 color;
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image->read_elem(x, y, color);
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color_accum += color;
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}
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}
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const int scale = (x_end - x_start) * (y_end - y_start);
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copy_v4_v4(it.out, color_accum / float(scale));
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}
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}
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} // namespace blender::compositor
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