99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
/* SPDX-FileCopyrightText: 2011 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "COM_MultiThreadedOperation.h"
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#include "DNA_node_types.h"
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struct RNG;
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namespace blender::compositor {
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class ScreenLensDistortionOperation : public MultiThreadedOperation {
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private:
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/**
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* Cached reference to the input_program
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*/
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SocketReader *input_program_;
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struct RNG *rng_;
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bool fit_;
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bool jitter_;
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float dispersion_;
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float distortion_;
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bool dispersion_const_;
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bool distortion_const_;
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bool variables_ready_;
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float k_[3];
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float k4_[3];
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float dk4_[3];
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float maxk_;
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float sc_, cx_, cy_;
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public:
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ScreenLensDistortionOperation();
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void init_data() override;
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/**
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* The inner loop of this operation.
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*/
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void execute_pixel(float output[4], int x, int y, void *data) override;
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/**
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* Initialize the execution
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*/
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void init_execution() override;
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void *initialize_tile_data(rcti *rect) override;
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/**
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* Deinitialize the execution
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*/
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void deinit_execution() override;
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void set_fit(bool fit)
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{
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fit_ = fit;
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}
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void set_jitter(bool jitter)
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{
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jitter_ = jitter;
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}
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/** Set constant distortion value */
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void set_distortion(float distortion);
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/** Set constant dispersion value */
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void set_dispersion(float dispersion);
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bool determine_depending_area_of_interest(rcti *input,
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ReadBufferOperation *read_operation,
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rcti *output) override;
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void determine_canvas(const rcti &preferred_area, rcti &r_area) override;
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void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
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void update_memory_buffer_partial(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs) override;
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private:
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void determineUV(float result[6], float x, float y) const;
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void update_variables(float distortion, float dispersion);
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void get_uv(const float xy[2], float uv[2]) const;
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void distort_uv(const float uv[2], float t, float xy[2]) const;
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bool get_delta(float r_sq, float k4, const float uv[2], float delta[2]) const;
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void accumulate(const MemoryBuffer *buffer,
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int a,
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int b,
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float r_sq,
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const float uv[2],
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const float delta[3][2],
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float sum[4],
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int count[3]) const;
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};
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} // namespace blender::compositor
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