Function CheckToRenderMineObjects

Descent3/render.cpp:3263–3308

Either renders the objects in a room, or stuffs them into our postrender list

}
// Either renders the objects in a room, or stuffs them into our postrender list
void CheckToRenderMineObjects(int roomnum) {

  if (UseHardware) {
    int index;
    float zdist;
    if (Render_mirror_for_room)
      return;
    for (index = Rooms[roomnum].objects; index != -1; index = Objects[index].next) {
      object *obj = &Objects[index];
      if (Objects[index].render_type == RT_NONE)
        continue;
      if (obj == Viewer_object)
        continue;
      // Don't draw piggybacked objects
      if (Viewer_object->type == OBJ_OBSERVER && index == Players[Viewer_object->id].piggy_objnum)
        continue;
      float size = Objects[index].size;
      // Special case weapons with streamers
      if (Objects[index].type == OBJ_WEAPON && (Weapons[Objects[index].id].flags & WF_STREAMER))
        size = Weapons[Objects[index].id].phys_info.velocity.z;
      // Check if object is trivially rejected
      int visible = IsPointVisible(&obj->pos, size, &zdist); // calculate zdist
      if ((obj->type == OBJ_WEAPON && Weapons[obj->id].flags & WF_ELECTRICAL) || visible) {
        if (Num_postrenders < MAX_POSTRENDERS) {
          Postrender_list[Num_postrenders].type = PRT_OBJECT;
          Postrender_list[Num_postrenders].z = zdist;
          Postrender_list[Num_postrenders++].objnum = index;
        }
      }
    }
    // Now do viseffects
    for (index = Rooms[roomnum].vis_effects; index != -1; index = VisEffects[index].next) {
      if (VisEffects[index].type == VIS_NONE || VisEffects[index].flags & VF_DEAD)
        continue;

      if (IsPointVisible(&VisEffects[index].pos, VisEffects[index].size, &zdist)) {
        if (Num_postrenders < MAX_POSTRENDERS) {
          Postrender_list[Num_postrenders].type = PRT_VISEFFECT;
          Postrender_list[Num_postrenders].z = zdist;
          Postrender_list[Num_postrenders++].visnum = index;
        }
      }
    }
  } else
    RenderRoomObjects(&Rooms[roomnum]);
}
// Renders all the mirrored rooms for this frame
void RenderMirrorRooms() {
  int i;