light_system.h

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#pragma once
 
#include "defines.h"
#include "math/math_types.h"
#include "strings/kname.h"
 
typedef struct directional_light_data {
    vec4 colour;
    vec4 direction;
 
    f32 shadow_distance;
    f32 shadow_fade_distance;
    f32 shadow_split_mult;
    f32 padding;
} directional_light_data;
 
typedef struct directional_light {
    kname name;
 
    u32 generation;
    directional_light_data data;
    void* debug_data;
} directional_light;
 
typedef struct point_light_data {
    vec4 colour;
    vec4 position;
    f32 constant_f;
    f32 linear;
    f32 quadratic;
    f32 padding;
} point_light_data;
 
typedef struct point_light {
    kname name;
    u32 generation;
    point_light_data data;
    void* debug_data;
 
    // The positional offset from whatever this may be attached to.
    vec4 position;
} point_light;
 
b8 light_system_initialize(u64* memory_requirement, void* memory, void* config);
 
void light_system_shutdown(void* state);
 
KAPI b8 light_system_directional_add(directional_light* light);
 
KAPI b8 light_system_point_add(point_light* light);
 
KAPI b8 light_system_directional_remove(directional_light* light);
 
KAPI b8 light_system_point_remove(point_light* light);
 
KAPI directional_light* light_system_directional_light_get(void);
 
KAPI u32 light_system_point_light_count(void);
 
KAPI b8 light_system_point_lights_get(point_light* p_lights);