AtmosphereClipmap.h

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#pragma once
#include "common/Export.h"
 
 
#include "graphics/AtmosphereVolume.h"
 
#include <vector>
 
namespace eve::graphics {
 
struct AtmosphereClipmapLevel {
    AtmosphereVolume volume;
    glm::vec3 center{0.f};
    float extent = 1.f;
    float voxelSize = 1.f;
};
 
class EVENGINE_API_BACKENDS AtmosphereClipmap {
public:
    void configure(int levelCount, int resolution, float firstExtent);
    void updateCenter(const glm::vec3 &cameraPosition);
 
    int getLevelCount() const { return int(levels_.size()); }
    AtmosphereClipmapLevel &getLevel(int level);
    const AtmosphereClipmapLevel &getLevel(int level) const;
 
    int levelForPosition(const glm::vec3 &worldPosition) const;
    FogFroxel sample(const glm::vec3 &worldPosition) const;
 
private:
    std::vector<AtmosphereClipmapLevel> levels_;
};
 
}  // namespace eve::graphics