light_culling.hpp

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#pragma once
 
#include <glm/glm.hpp>
 
namespace renderer::light_culling {
 
struct Sphere {
  glm::vec3 center {0.0f};
  float radius = 0.0f;
};
 
struct DepthRange {
  float near_depth = 0.0f;
  float far_depth = 0.0f;
};

[[nodiscard]]
auto spotBounds(const glm::vec3& position, const glm::vec3& direction, float range, float outer_radians) -> Sphere;

[[nodiscard]]
auto importance(const glm::vec3& color, float intensity, float range, float camera_distance, float cone_fraction) -> float;

[[nodiscard]]
auto clusterDepthRange(float camera_near, float camera_far, float light_reach) -> DepthRange;
 
}