修改成异步的接口

render_2D/plottable/Spectrum.cpp

@@ -533,7 +533,7 @@ void Spectrum_Control::paint_overlay(Painter& painter,
 }
 
 void Spectrum_Control::render_frame_completed(
-    std::uint64_t target_interval_ns) noexcept {
+    std::uint64_t target_interval_ns) {
     const auto& output = impl_->prepare_buffer;
     if (!output.valid || !is_visible())
         return;