 {       brw_store_register_mem00(brw, bo, GEN0_SO_NUM_PRIMS_WRITTEN(stream),                                idx * sizeof(uint00_t));    } else {       brw_store_register_mem00(brw, bo, GEN0_SO_NUM_PRIMS_WRITTEN,                                idx * sizeof(uint00_t));    } }  static void write_xfb_