/*
* R_MarkLights
*
* Iterates the world surfaces (and those of BSP sub-models), populating the
* light source bit masks so that we know which light sources each surface
* should receive.
*/
void R_MarkLights(void) {
int i, j;
r_locals.light_frame++;
if (r_locals.light_frame == 0x7fff) // avoid overflows
r_locals.light_frame = 0;
R_AddSustainedLights();
// flag all surfaces for each light source
for (i = 0; i < r_view.num_lights; i++) {
r_light_t *light = &r_view.lights[i];
// world surfaces
R_MarkLights_(light, vec3_origin, 1 << i, r_world_model->nodes);
// and bsp entity surfaces
for (j = 0; j < r_view.num_entities; j++) {
r_entity_t *e = &r_view.entities[j];
if (e->model && e->model->type == mod_bsp_submodel) {
e->model->lights = 0;
R_MarkLights_(light, e->origin, 1 << i, e->model->nodes);
}
}
}
}
/*
* @brief Recurses the world, populating the light source bit masks of surfaces
* that receive light.
*/
void R_MarkLights(void) {
const r_bsp_model_t *bsp = r_model_state.world->bsp;
const r_light_t *l = r_view.lights;
R_AddSustainedLights();
r_locals.light_frame++;
if (r_locals.light_frame == INT16_MAX) // avoid overflows
r_locals.light_frame = 0;
// mark each light against the world
for (uint16_t i = 0; i < r_view.num_lights; i++, l++) {
R_MarkLight(l, bsp->nodes);
}
}