frame_time

config/input.toml

@@ -1,12 +1,17 @@
 [[button]]
-name = "QUIT"
+name = "quit"
 scan_code = 1
 
 [[button]]
-name = "RELOAD_SHADERS"
+name = "reload_shaders"
 scan_code = 19
 ctrl = true
 
+[[button]]
+name = "print_framerate"
+scan_code = 33
+crtl = true
+
 [[button]]
 name = "w"
 scan_code = 17

config/log.toml

@@ -1,2 +1,2 @@
-input = true
+input = false
 vulkan_validation_layers = true

src/main.rs

@@ -23,17 +23,23 @@ impl Game for TestGame {
     }
 
     fn update(self: &mut Self, game_data: &mut GameData) {
-        game_data.push_constants.time = game_data.start_time.elapsed().unwrap().as_millis() as f32 / 1000.0;
+        let new_time = game_data.start_time.elapsed().unwrap().as_millis() as f32 / 1000.0;
+        let frame_time = new_time - game_data.push_constants.time;
+        game_data.push_constants.time = new_time;
 
         // User interaction
-        if self.input.button_just_released("QUIT") {
+        if self.input.button_just_released("quit") {
             game_data.shutdown = true;
         }
 
-        if self.input.button_just_pressed("RELOAD_SHADERS") {
+        if self.input.button_just_pressed("reload_shaders") {
             game_data.recreate_pipeline = true;
         }
 
+        if self.input.button_down("print_framerate") {
+            println!("{:.0} ms / {:.0} FPS", frame_time * 1000.0, 1.0 / frame_time);
+        }
+
         self.cam_rotation = self.cam_rotation * Quaternion::from_angle_z(Deg(self.input.get_axis("look_horizontal") * 0.05));
         self.cam_rotation = Quaternion::from_angle_x(Deg(self.input.get_axis("look_vertical") * 0.05)) * self.cam_rotation;
         self.cam_position += self.cam_rotation.invert().rotate_vector(Vector3::new(