vulkan validation layer config

src/vulkan.rs

@@ -41,11 +41,6 @@ const VALIDATION_LAYERS: &[&str] =  &[
     "VK_LAYER_LUNARG_standard_validation"
 ];
 
-#[cfg(all(debug_assertions))]
-const ENABLE_VALIDATION_LAYERS: bool = true;
-#[cfg(not(debug_assertions))]
-const ENABLE_VALIDATION_LAYERS: bool = false;
-
 #[derive(Default, Debug, Clone)]
 pub struct Vertex {
     pub position: [f32; 3],
@@ -61,6 +56,8 @@ pub struct LinePoint {
 vulkano::impl_vertex!(LinePoint, position);
 
 pub trait Game {
+    fn validation_layers_enabled(self: &Self) -> bool;
+
     fn update(self: &mut Self, game_data: &mut GameData);
 
     /// Returns true if event should be ignored by the vulkan handler
@@ -98,7 +95,7 @@ pub fn init(mesh_path: &str, line_vertices: Vec<LinePoint>, game: &mut dyn Game)
         dimensions: [0, 0]
     };
 
-    if ENABLE_VALIDATION_LAYERS {
+    if game.validation_layers_enabled() {
         println!("Enabling validation layers...");
     }
 
@@ -115,7 +112,7 @@ pub fn init(mesh_path: &str, line_vertices: Vec<LinePoint>, game: &mut dyn Game)
             engine_version: Some(Version { major: 0, minor: 1, patch: 0 })
         };
 
-        if ENABLE_VALIDATION_LAYERS {
+        if game.validation_layers_enabled() {
             let available_layers = vulkano::instance::layers_list().unwrap().map(|layer| String::from(layer.name())).collect::<Vec<String>>();
 
             VALIDATION_LAYERS.iter().for_each(|wanted_layer_name| {
@@ -132,7 +129,7 @@ pub fn init(mesh_path: &str, line_vertices: Vec<LinePoint>, game: &mut dyn Game)
 
     // lifetime of this is important, even tho it isn't used!
     let mut _debug_callback = None;
-    if ENABLE_VALIDATION_LAYERS {
+    if game.validation_layers_enabled() {
         let msg_types = MessageTypes {
             error: true,
             warning: true,