/**
* @brief Performs a frustum-cull of all entities. This is performed in a separate
* thread while the renderer draws the world. Mesh entities which pass a frustum
* cull will also have their lighting information updated.
*/
void R_CullEntities(void) {
r_entity_t *e = r_view.entities;
for (uint16_t i = 0; i < r_view.num_entities; i++, e++) {
r_entities_t *ents = &r_sorted_entities.null_entities;
if (IS_BSP_INLINE_MODEL(e->model)) {
if (R_CullBspInlineModel(e)) {
continue;
}
ents = &r_sorted_entities.bsp_inline_entities;
} else if (IS_MESH_MODEL(e->model)) {
if (R_CullMeshModel(e)) {
continue;
}
R_UpdateMeshModelLighting(e);
ents = &r_sorted_entities.mesh_entities;
}
R_ENTITY_TO_ENTITIES(ents, e); // append to the appropriate draw list
R_SetMatrixForEntity(e); // set the transform matrix
}
// sort the mesh entities list by model to allow object instancing
r_entities_t *mesh = &r_sorted_entities.mesh_entities;
qsort(mesh, mesh->count, sizeof(r_entity_t *), R_CullEntities_compare);
}
/**
* @brief Perform a frustum cull check for a given entity
* @param[in,out] e The entity to perform the frustum cull check for
* @return @c false if visible, @c true is the origin of the entity is outside the
* current frustum view
*/
static bool R_CullEntity (entity_t* e)
{
if (refdef.rendererFlags & RDF_NOWORLDMODEL)
return false;
if (r_nocull->integer)
return false;
if (!e->model) /* don't bother culling null model ents */
return false;
if (e->model->type == mod_bsp_submodel)
return R_CullBspModel(e);
else
return R_CullMeshModel(e);
}
