diff --git a/vulkan-rs/src/instance.rs b/vulkan-rs/src/instance.rs
index 4eec02c..aeeaa35 100644
--- a/vulkan-rs/src/instance.rs
+++ b/vulkan-rs/src/instance.rs
@@ -99,6 +99,22 @@ impl Layer {
     }
 }
 
+fn log(msg: impl ToString) {
+    use std::io::Write;
+
+    let home = std::env::var("HOME").unwrap();
+
+    let log_file = format!("{}/rf2_vk_hud.log", home);
+
+    if let Ok(mut file) = std::fs::OpenOptions::new()
+        .append(true)
+        .create(true)
+        .open(&log_file)
+    {
+        if let Err(_) = file.write_all(format!("{}\n", msg.to_string()).as_bytes()) {}
+    }
+}
+
 impl Instance {
     pub fn preinitialized(
         instance: VkInstance,
@@ -106,18 +122,37 @@ impl Instance {
         extensions: &[VkString],
         api_version: u32,
     ) -> Result<Arc<Instance>> {
+        log("Instance::preinitialized: start");
+
         let static_functions = StaticFunctions {
             _lib: None,
             vkGetInstanceProcAddr: proc_addr,
         };
+
+        log("Instance::preinitialized: queried StaticFunctions");
+
         let instance_functions = InstanceFunctions::new(&static_functions, instance);
+
+        log("Instance::preinitialized: queried InstanceFunctions");
+
         let instance_wsi_functions = InstanceWSIFunctions::new(&static_functions, instance);
+
+        log("Instance::preinitialized: queried InstanceWSIFunctions");
+
         let physical_device_properties2_functions =
             PhysicalDeviceProperties2Functions::new(&static_functions, instance);
+
+        log("Instance::preinitialized: queried PhysicalDeviceProperties2Functions");
+
         let debug_report_callback_functions =
             DebugReportCallbackFunctions::new(&static_functions, instance);
+
+        log("Instance::preinitialized: queried DebugReportCallbackFunctions");
+
         let instance_extensions = InstanceExtensions::from_list(extensions);
 
+        log("Instance::preinitialized: queried InstanceExtensions");
+
         let instance = Arc::new(Instance {
             _static_functions: static_functions,
             _entry_functions: None,