ConvolutionPyramid.hpp

#pragma once
#include "resources/Texture.hpp"
#include "resources/ResourcesManager.hpp"
#include "Common.hpp"
 
class ConvolutionPyramid {
 
public:
    ConvolutionPyramid(uint width, uint height, uint inoutPadding);
 
    void setFilters(const float h1[5], float h2, const float g[3]);
 
    void process(const Texture& texture);
 
    void resize(uint width, uint height);
 
    const Texture * texture() const { return &_shifted; }
 
    unsigned int width() { return _resolution[0]; }
 
    unsigned int height() { return _resolution[1]; }
 
private:
    Program * _downscale; 
    Program * _upscale;   
    Program * _filter;  
    Program * _padder;  
 
    Texture _shifted;                 
    std::vector<Texture> _levelsIn;  
    std::vector<Texture> _levelsOut; 
 
    float _h1[5] = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f}; 
    float _h2   = 0.0f;                        
    float _g[3]  = {0.0f, 0.0f, 0.0f};             
 
    glm::ivec2 _resolution = glm::ivec2(0); 
    const int _size        = 5;             
    int _padding           = 0;             
};