AtmosphereApp.hpp

#pragma once
#include "Application.hpp"
#include "scene/Sky.hpp"
#include "resources/Texture.hpp"
#include "system/Config.hpp"
#include "Common.hpp"
 
class AtmosphereApp final : public CameraApp {
public:
    
    AtmosphereApp(RenderingConfig & config, Window & window);
    
    void draw() override;
    
    void update() override;
    
    void resize() override;
 
    static void precomputeTable(const Sky::AtmosphereParameters & params, uint samples, Image & table);
    
private:
 
    void updateSky();
 
    Texture _atmosphereBuffer; 
    Program * _atmosphere; 
    Program * _tonemap; 
    Texture _scattering; 
 
    // Atmosphere parameters.
    Sky::AtmosphereParameters _atmoParams; 
    int _tableRes = 256; 
    int _tableSamples = 64; 
    
    // Real-time parameters.
    glm::vec3 _lightDirection;      
    float _lightElevation = 10.0f;  
    float _lightAzimuth   = 290.0f; 
    float _altitude       = 1.0f;   
};