diff --git a/vulkan/FaceApp.cpp b/vulkan/FaceApp.cpp
index da05cef..be25a7a 100644
--- a/vulkan/FaceApp.cpp
+++ b/vulkan/FaceApp.cpp
@@ -1261,6 +1261,11 @@ void FaceApp::SetInitArg(const char* arg)
 
 void FaceApp::drawFrame(long long frameTime)
 {
+	if (!_running)
+	{
+		return;
+	}
+
 	std::unique_lock lock(changeMotionMtx);
 	static long long game_time = 0;
 	game_time += frameTime;
diff --git a/vulkan/FaceApp.h b/vulkan/FaceApp.h
index 503ad2f..34cc965 100644
--- a/vulkan/FaceApp.h
+++ b/vulkan/FaceApp.h
@@ -146,6 +146,8 @@ public:
 
     void destroyTexture(VkDevice device, Texture& texture);
     void cleanupResources(VkDevice device, VmaAllocator allocator);
+
+    bool _running = false;
 };
 
 #endif
diff --git a/vulkan/main.cpp b/vulkan/main.cpp
index cb5e29d..e4ea7f1 100644
--- a/vulkan/main.cpp
+++ b/vulkan/main.cpp
@@ -77,6 +77,7 @@ int main() {
     FaceApp app;
     app.SetInitArg(json_str.c_str());
     app.initVulkan();
+    app._running = true;
     app.mainLoop();
     //try {
     //    app.mainLoop();