9532ea3f8c
The setting was only affecting some of the blur operations, which does not typically results in a measurable performance boost in real compositor setups. For the simplicity of settings on user level remove setting which potentially makes compositor output worse, without much benefit. There are better ways to gain performance, like compositing on a lower resolution, exposing "preview" as an input to the node tree (similar to the geometry nodes) etc. Pull Request: https://projects.blender.org/blender/blender/pulls/121576
94 lines
2.8 KiB
C++
94 lines
2.8 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_DirectionalBlurOperation.h"
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namespace blender::compositor {
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DirectionalBlurOperation::DirectionalBlurOperation()
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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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flags_.can_be_constant = true;
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}
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void DirectionalBlurOperation::init_execution()
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{
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const float angle = data_->angle;
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const float zoom = data_->zoom;
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const float spin = data_->spin;
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const float iterations = data_->iter;
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const float distance = data_->distance;
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const float center_x = data_->center_x;
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const float center_y = data_->center_y;
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const float width = get_width();
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const float height = get_height();
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const float a = angle;
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const float itsc = 1.0f / powf(2.0f, float(iterations));
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float D;
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D = distance * sqrtf(width * width + height * height);
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center_x_pix_ = center_x * width;
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center_y_pix_ = center_y * height;
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tx_ = itsc * D * cosf(a);
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ty_ = -itsc * D * sinf(a);
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sc_ = itsc * zoom;
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rot_ = itsc * spin;
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}
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void DirectionalBlurOperation::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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BLI_assert(input_idx == 0);
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UNUSED_VARS_NDEBUG(input_idx);
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r_input_area = this->get_canvas();
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}
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void DirectionalBlurOperation::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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const MemoryBuffer *input = inputs[0];
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const int iterations = pow(2.0f, data_->iter);
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for (BuffersIterator<float> it = output->iterate_with({}, area); !it.is_end(); ++it) {
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const int x = it.x;
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const int y = it.y;
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float color_accum[4];
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input->read_elem_bilinear(x, y, color_accum);
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/* Blur pixel. */
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/* TODO(manzanilla): Many values used on iterations can be calculated beforehand. Create a
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* table on operation initialization. */
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float ltx = tx_;
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float lty = ty_;
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float lsc = sc_;
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float lrot = rot_;
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for (int i = 0; i < iterations; i++) {
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const float cs = cosf(lrot), ss = sinf(lrot);
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const float isc = 1.0f / (1.0f + lsc);
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const float v = isc * (y + 0.5f - center_y_pix_) + lty;
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const float u = isc * (x + 0.5f - center_x_pix_) + ltx;
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float color[4];
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input->read_elem_bilinear(
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cs * u + ss * v + center_x_pix_ - 0.5f, cs * v - ss * u + center_y_pix_ - 0.5f, color);
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add_v4_v4(color_accum, color);
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/* Double transformations. */
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ltx += tx_;
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lty += ty_;
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lrot += rot_;
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lsc += sc_;
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}
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mul_v4_v4fl(it.out, color_accum, 1.0f / (iterations + 1));
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}
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}
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} // namespace blender::compositor
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