Function ClearObjectLightmaps

Descent3/object_lighting.cpp:458–497

Frees all the memory associated with this objects lightmap

// Frees all the memory associated with this objects lightmap
void ClearObjectLightmaps(object *obj) {
  int Mnum, Fnum;

  if (obj->lm_object.used == 1) {
    obj->lm_object.used = 0;
    poly_model *pm = &Poly_models[obj->rtype.pobj_info.model_num];
    ASSERT(pm->n_models < MAX_SUBOBJECTS);

    mprintf(1, "CLEAR %d %s", obj->handle, obj->name);

    int faceCount = 0;
    for (Mnum = 0; Mnum < pm->n_models; Mnum++) {
      if (!IsNonRenderableSubmodel(pm, Mnum)) {
        mprintf(1, " %X\n", obj->lm_object.lightmap_faces[Mnum][0].u2);
        mem_free(obj->lm_object.lightmap_faces[Mnum][0].u2);
        break;
      }
    }
    for (Mnum = 0; Mnum < pm->n_models; Mnum++) {
      if (IsNonRenderableSubmodel(pm, Mnum))
        continue;

      for (Fnum = 0; Fnum < pm->submodel[Mnum].num_faces; Fnum++) {
        lightmap_object_face *lof = &obj->lm_object.lightmap_faces[Mnum][Fnum];

        if (lof->lmi_handle != BAD_LMI_INDEX) {
          FreeLightmapInfo(lof->lmi_handle);
          lof->lmi_handle = BAD_LMI_INDEX;
        }
        lof->num_verts = 0;
      }

      if (obj->lm_object.num_faces[Mnum]) {
        mem_free(obj->lm_object.lightmap_faces[Mnum]);
        obj->lm_object.lightmap_faces[Mnum] = NULL;
      }
      obj->lm_object.num_faces[Mnum] = 0;
    }
  }
}

// Frees all the memory associated with lightmap objects
void ClearAllObjectLightmaps(int terrain) {