Function schedule_graphics_callback

src/python/python_runtime.cpp:1091–1094

    }

    void schedule_graphics_callback(std::function<void()> fn) {
        std::lock_guard lock(g_graphics_callbacks_mutex);
        g_graphics_callbacks.push_back(std::move(fn));
    }

    bool has_pending_graphics_callbacks() {
        std::lock_guard lock(g_graphics_callbacks_mutex);