PostProcessStack.hpp

#pragma once
 
 
#include "renderers/Renderer.hpp"
#include "renderers/Renderer.hpp"
 
#include "resources/Texture.hpp"
#include "processing/GaussianBlur.hpp"
 
#include "Common.hpp"
 
class PostProcessStack final : public Renderer {
public:
    
    struct Settings {
        float exposure  = 1.0f;  
        float bloomTh   = 1.2f;  
        float bloomMix  = 0.2f;  
        int bloomRadius = 4;     
        float focusDist = 2.0f;  
        float focusScale = 10.0f;
        bool dof        = false;  
        bool bloom      = true;  
        bool tonemap    = true;  
        bool fxaa       = true;  
    };
    
    explicit PostProcessStack(const glm::vec2 & resolution);
    
    void process(const Texture& src, const glm::mat4 & proj, const Texture& depth, Texture& dst, uint layer = 0);
 
    void interface() override;
 
    void resize(uint width, uint height) override;
 
    Settings & settings(){ return _settings; }
    
private:
 
    void updateBlurPass();
 
    Texture _bloomBuffer;                   
    Texture _toneMapBuffer;                 
    Texture _dofDownscaledColor;            
    Texture _dofCocAndDepth;                
    Texture _dofGatherBuffer;               
    Texture _resultTexture;                 
    std::unique_ptr<GaussianBlur> _blur;    
    
    Program * _bloomProgram;            
    Program * _bloomComposite;          
    Program * _toneMappingProgram;      
    Program * _dofCocProgram;           
    Program * _dofGatherProgram;        
    Program * _dofCompositeProgram;     
    Program * _fxaaProgram;             
    
    Settings _settings; 
    
};