diff --git a/src/main.c b/src/main.c
index 4430366..fc9c921 100644
--- a/src/main.c
+++ b/src/main.c
@@ -48,6 +48,9 @@ typedef struct Application {
   VkQueue graphicsQueue;
   VkQueue presentQueue;
   VkSwapchainKHR swapChain;
+  VkImage *swapChainImages;
+  VkFormat swapChainImageFormat;
+  VkExtent2D swapChainExtent;
 } Application;
 
 typedef struct SwapChainSupportDetails {
@@ -562,6 +565,9 @@ void createSwapChain(Application *app) {
     fprintf(stderr, "Failed to create swapchain!");
     exit(EXIT_FAILURE);
   }
+
+  app->swapChainImageFormat = surfaceFormat.format;
+  app->swapChainExtent = extent;
 }
 
 void initVulkan(Application *app) {
@@ -592,7 +598,7 @@ void cleanup(Application *app) {
 }
 
 int main(void) {
-  Application app;
+  Application app = {0};
 
   initWindow(&app);
   initVulkan(&app);