90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2018 Blender Foundation. */
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#include "COM_CryptomatteOperation.h"
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namespace blender::compositor {
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CryptomatteOperation::CryptomatteOperation(size_t num_inputs)
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{
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inputs.resize(num_inputs);
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for (size_t i = 0; i < num_inputs; i++) {
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this->add_input_socket(DataType::Color);
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}
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this->add_output_socket(DataType::Color);
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flags_.complex = true;
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}
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void CryptomatteOperation::init_execution()
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{
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for (size_t i = 0; i < inputs.size(); i++) {
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inputs[i] = this->get_input_socket_reader(i);
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}
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}
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void CryptomatteOperation::add_object_index(float object_index)
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{
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if (object_index != 0.0f) {
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object_index_.append(object_index);
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}
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}
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void CryptomatteOperation::execute_pixel(float output[4], int x, int y, void *data)
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{
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float input[4];
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output[0] = output[1] = output[2] = output[3] = 0.0f;
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for (size_t i = 0; i < inputs.size(); i++) {
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inputs[i]->read(input, x, y, data);
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if (i == 0) {
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/* Write the front-most object as false color for picking. */
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output[0] = input[0];
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uint32_t m3hash;
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::memcpy(&m3hash, &input[0], sizeof(uint32_t));
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/* Since the red channel is likely to be out of display range,
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* setting green and blue gives more meaningful images. */
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output[1] = (float(m3hash << 8) / float(UINT32_MAX));
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output[2] = (float(m3hash << 16) / float(UINT32_MAX));
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}
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for (float hash : object_index_) {
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if (input[0] == hash) {
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output[3] += input[1];
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}
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if (input[2] == hash) {
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output[3] += input[3];
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}
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}
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}
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}
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void CryptomatteOperation::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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for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
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zero_v4(it.out);
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for (int i = 0; i < it.get_num_inputs(); i++) {
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const float *input = it.in(i);
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if (i == 0) {
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/* Write the front-most object as false color for picking. */
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it.out[0] = input[0];
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uint32_t m3hash;
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::memcpy(&m3hash, &input[0], sizeof(uint32_t));
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/* Since the red channel is likely to be out of display range,
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* setting green and blue gives more meaningful images. */
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it.out[1] = (float(m3hash << 8) / float(UINT32_MAX));
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it.out[2] = (float(m3hash << 16) / float(UINT32_MAX));
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}
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for (const float hash : object_index_) {
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if (input[0] == hash) {
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it.out[3] += input[1];
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}
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if (input[2] == hash) {
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it.out[3] += input[3];
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}
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}
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}
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}
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}
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} // namespace blender::compositor
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