docs: @Override
      void onPause() {
          super.onPause();
          mRotationSensor.onPause();
  
          if(NativeVulkanCore.getVulkanPropValue() > 0) {
              activeFlag = false;
  
              if (vulkanDrawThread != null){
                  try {
                      vulkanDrawThread.join();
                  } catch (InterruptedException e) {
                      Log.e("vulkan: activity onPause:", "draw thread not terminated");
                  }
              }
          }
          Log.d(TAG, "onPause");
      }