message: Use single buffered render target with pathtracing
diff: @@ -1427,6 +1427,13 @@ int main(int argc, char** argv)
  return EXIT_FAILURE;
  }
  + if (rend.algo == Pathtracing)
  + {
  + // Double buffering does not work in case of pathtracing
  + // because destination and source buffers need to be the same
  + rend.rt.set_double_buffering(false);
  + }
  +
  rend.gl_debug_callback.activate();
  // Load the scene
  