feat(renderer): added scale_factor to the trait to allow checking for scale factors in the event loop

crates/comet_app/src/app.rs

@@ -381,6 +381,9 @@ impl App {
                             WindowEvent::Resized(physical_size) => {
                                 renderer.resize(*physical_size);
                             }
+                            WindowEvent::ScaleFactorChanged { scale_factor, .. } => {
+                                renderer.set_scale_factor(*scale_factor);
+                            }
                             WindowEvent::RedrawRequested => {
                                 window.request_redraw();
                                 match renderer.render() {

crates/comet_renderer/src/renderer.rs

@@ -1,12 +1,15 @@
+use comet_colors::Color;
 use std::sync::Arc;
 use winit::dpi::PhysicalSize;
 use winit::window::Window;
-use comet_colors::Color;
 
 pub trait Renderer: Sized + Send + Sync {
     fn new(window: Arc<Window>, clear_color: Option<impl Color>) -> Self;
     fn size(&self) -> PhysicalSize<u32>;
     fn resize(&mut self, new_size: winit::dpi::PhysicalSize<u32>);
+    fn scale_factor(&self) -> f64;
+    fn set_scale_factor(&mut self, scale_factor: f64);
     fn update(&mut self) -> f32;
     fn render(&mut self) -> Result<(), wgpu::SurfaceError>;
 }
+

crates/comet_renderer/src/renderer2d.rs

@@ -26,6 +26,7 @@ pub struct Renderer2D<'a> {
     queue: wgpu::Queue,
     config: wgpu::SurfaceConfiguration,
     size: PhysicalSize<u32>,
+    scale_factor: f64,
     universal_render_pipeline: wgpu::RenderPipeline,
     texture_bind_group_layout: wgpu::BindGroupLayout,
     texture_sampler: wgpu::Sampler,
@@ -43,6 +44,7 @@ pub struct Renderer2D<'a> {
 impl<'a> Renderer2D<'a> {
     pub fn new(window: Arc<Window>, clear_color: Option<impl Color>) -> Renderer2D<'a> {
         let size = window.inner_size(); //PhysicalSize::<u32>::new(1920, 1080);
+        let scale_factor = window.scale_factor();
 
         let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
             backends: wgpu::Backends::PRIMARY,
@@ -258,6 +260,7 @@ impl<'a> Renderer2D<'a> {
             queue,
             config,
             size,
+            scale_factor,
             universal_render_pipeline,
             texture_bind_group_layout,
             texture_sampler,
@@ -294,6 +297,14 @@ impl<'a> Renderer2D<'a> {
         }
     }
 
+    pub fn scale_factor(&self) -> f64 {
+        self.scale_factor
+    }
+
+    pub fn set_scale_factor(&mut self, scale_factor: f64) {
+        self.scale_factor = scale_factor
+    }
+
     pub fn add_draw_call(&mut self, draw_call: String, texture: Texture) {
         let draw_info = DrawInfo::new(
             draw_call,
@@ -919,6 +930,14 @@ impl<'a> Renderer for Renderer2D<'a> {
         self.resize(new_size)
     }
 
+    fn scale_factor(&self) -> f64 {
+        self.scale_factor()
+    }
+
+    fn set_scale_factor(&mut self, scale_factor: f64) {
+        self.set_scale_factor(scale_factor);
+    }
+
     fn update(&mut self) -> f32 {
         self.update()
     }