start_lock = new Condition(1, "RenderEngine::start_lock");
output_lock = new Condition(1, "RenderEngine::output_lock");
render_active = new Condition(1,"RenderEngine::render_active");
start_lock = new Condition(1, "RenderEngine::start_lock");
output_lock = new Condition(1, "RenderEngine::output_lock");
render_active = new Condition(1,"RenderEngine::render_active");