Files
SimpleRayTracing/native/header/Lighting/Light.h
Misaki f1d3dddb9a Change project structure;
Added new c# binding;
2025-12-30 20:54:05 +09:00

163 lines
4.0 KiB
C

#ifndef LIGHT_H
#define LIGHT_H
#include "Algorithm/BVH.h"
#include "Algorithm/Sobol.h"
#include "Geometry/Triangle.h"
#include "Rendering/Texture.h"
#include "cglm/struct/vec3.h"
struct scene_t;
typedef struct
{
vec3s position;
vec3s normal;
vec3s geometric_normal;
vec3s tangent;
vec2s uv;
vec3s wo;
uint16_t bounce_depth;
const struct scene_t* scene;
const bvh_tree_t* bvh_tree;
const texture_collection_t* textures;
float spread_angle;
} light_shading_context_t;
typedef path_output (*evaluate_bsdf_sky_f) (const void* data, const light_shading_context_t* context, vec3s throughput, uint32_t sample_index);
typedef void (*sky_free_f) (void* data);
typedef struct
{
uint16_t data_size;
void* data;
evaluate_bsdf_sky_f evaluate_bsdf_sky;
sky_free_f free_sky_data;
} sky_light_t;
typedef enum
{
LIGHT_TYPE_POINT,
LIGHT_TYPE_SPOT,
LIGHT_TYPE_AREA,
} punctual_light_type_e;
typedef struct
{
vec3s position;
vec3s color;
float intensity;
punctual_light_type_e type;
} punctual_light_t;
typedef struct
{
vec3s direction;
vec3s color;
float intensity;
float angular_diameter;
} directional_light_t;
typedef struct
{
uint32_t punctual_light_count;
uint32_t directional_light_count;
uint32_t max_punctual_lights;
uint32_t max_directional_lights;
sky_light_t sky_light;
punctual_light_t* punctual_lights;
directional_light_t* directional_lights;
} light_collection_t;
typedef struct
{
uint32_t id;
bool is_punctual;
} light_entity_t;
inline bool light_collection_create(uint32_t max_punctual_lights, uint32_t max_directional_lights, light_collection_t* collection)
{
if (max_punctual_lights == 0 || max_directional_lights == 0)
{
return false;
}
collection->max_punctual_lights = max_punctual_lights;
collection->max_directional_lights = max_directional_lights;
collection->punctual_light_count = 0;
collection->directional_light_count = 0;
collection->punctual_lights = (punctual_light_t*)malloc(max_punctual_lights * sizeof(punctual_light_t));
if (collection->punctual_lights == NULL)
{
return false;
}
collection->directional_lights = (directional_light_t*)malloc(max_directional_lights * sizeof(directional_light_t));
if (collection->directional_lights == NULL)
{
free(collection->punctual_lights);
return false;
}
return true;
}
inline light_entity_t light_create_punctual_light(light_collection_t* collection)
{
if (collection->punctual_light_count >= collection->max_punctual_lights)
{
return (light_entity_t){0};
}
punctual_light_t light = {0};
collection->punctual_lights[collection->punctual_light_count] = light;
light_entity_t entity = {.id = collection->punctual_light_count, .is_punctual = true};
collection->punctual_light_count++;
return entity;
}
inline light_entity_t light_create_directional_light(light_collection_t* collection)
{
if (collection->directional_light_count >= collection->max_directional_lights)
{
return (light_entity_t){0};
}
directional_light_t light = {0};
collection->directional_lights[collection->directional_light_count] = light;
light_entity_t entity = {.id = collection->directional_light_count, .is_punctual = false};
collection->directional_light_count++;
return entity;
}
inline void light_collection_free(light_collection_t* collection)
{
free(collection->punctual_lights);
free(collection->directional_lights);
if (collection->sky_light.free_sky_data != NULL)
{
collection->sky_light.free_sky_data(collection->sky_light.data);
}
free(collection->sky_light.data);
collection->max_punctual_lights = 0;
collection->max_directional_lights = 0;
collection->punctual_light_count = 0;
collection->directional_light_count = 0;
collection->punctual_lights = NULL;
collection->directional_lights = NULL;
collection->sky_light.data = NULL;
}
#endif // LIGHT_H