optimize_layers(canvas->get_time(), canvas->get_context(), op_canvas);
context=op_canvas->get_context();
#else
optimize_layers(canvas->get_time(), canvas->get_context(), op_canvas);
context=op_canvas->get_context();
#else
optimize_layers(canvas->get_time(), canvas->get_context(), op_canvas);
context=op_canvas->get_context();
#else
optimize_layers(canvas->get_time(), canvas->get_context(), op_canvas);
context=op_canvas->get_context();
#else