Remove scale_factor from iced_wgpu::Viewport

native/src/window/backend.rs

@@ -38,7 +38,6 @@ pub trait Backend: Sized {
         surface: &Self::Surface,
         width: u32,
         height: u32,
-        scale_factor: f64,
     ) -> Self::SwapChain;
 
     /// Draws the output primitives to the next frame of the given [`SwapChain`].
@@ -50,6 +49,7 @@ pub trait Backend: Sized {
         renderer: &mut Self::Renderer,
         swap_chain: &mut Self::SwapChain,
         output: &<Self::Renderer as crate::Renderer>::Output,
+        scale_factor: f64,
         overlay: &[T],
     ) -> MouseCursor;
 }

wgpu/src/renderer.rs

@@ -73,12 +73,13 @@ impl Renderer {
         encoder: &mut wgpu::CommandEncoder,
         target: Target<'_>,
         (primitive, mouse_cursor): &(Primitive, MouseCursor),
+        scale_factor: f64,
         overlay: &[T],
     ) -> MouseCursor {
         log::debug!("Drawing");
 
         let (width, height) = target.viewport.dimensions();
-        let scale_factor = target.viewport.scale_factor();
+        let scale_factor = scale_factor as f32;
         let transformation = target.viewport.transformation();
 
         let mut layers = Vec::new();

wgpu/src/viewport.rs

@@ -1,31 +1,28 @@
 use crate::Transformation;
 
+/// A viewing region for displaying computer graphics.
 #[derive(Debug)]
 pub struct Viewport {
     width: u32,
     height: u32,
-    scale_factor: f32,
     transformation: Transformation,
 }
 
 impl Viewport {
-    pub fn new(width: u32, height: u32, scale_factor: f64) -> Viewport {
+    /// Creates a new [`Viewport`] with the given dimensions.
+    pub fn new(width: u32, height: u32) -> Viewport {
         Viewport {
             width,
             height,
-            scale_factor: scale_factor as f32,
             transformation: Transformation::orthographic(width, height),
         }
     }
 
+    /// Returns the dimensions of the [`Viewport`].
     pub fn dimensions(&self) -> (u32, u32) {
         (self.width, self.height)
     }
 
-    pub fn scale_factor(&self) -> f32 {
-        self.scale_factor
-    }
-
     pub(crate) fn transformation(&self) -> Transformation {
         self.transformation
     }

wgpu/src/window/backend.rs

@@ -47,9 +47,8 @@ impl iced_native::window::Backend for Backend {
         surface: &Self::Surface,
         width: u32,
         height: u32,
-        scale_factor: f64,
     ) -> SwapChain {
-        SwapChain::new(&self.device, surface, width, height, scale_factor)
+        SwapChain::new(&self.device, surface, width, height)
     }
 
     fn draw<T: AsRef<str>>(
@@ -57,6 +56,7 @@ impl iced_native::window::Backend for Backend {
         renderer: &mut Self::Renderer,
         swap_chain: &mut SwapChain,
         output: &<Self::Renderer as iced_native::Renderer>::Output,
+        scale_factor: f64,
         overlay: &[T],
     ) -> MouseCursor {
         let (frame, viewport) = swap_chain.next_frame();
@@ -89,6 +89,7 @@ impl iced_native::window::Backend for Backend {
                 viewport,
             },
             output,
+            scale_factor,
             overlay,
         );
 

wgpu/src/window/swap_chain.rs

@@ -17,11 +17,10 @@ impl SwapChain {
         surface: &wgpu::Surface,
         width: u32,
         height: u32,
-        scale_factor: f64,
     ) -> SwapChain {
         SwapChain {
             raw: new_swap_chain(surface, width, height, device),
-            viewport: Viewport::new(width, height, scale_factor),
+            viewport: Viewport::new(width, height),
         }
     }
 

winit/src/application.rs

@@ -175,7 +175,6 @@ pub trait Application: Sized {
                 &surface,
                 physical_size.width,
                 physical_size.height,
-                size.scale_factor(),
             )
         };
 
@@ -313,7 +312,6 @@ pub trait Application: Sized {
                         &surface,
                         physical_size.width,
                         physical_size.height,
-                        size.scale_factor(),
                     );
 
                     resized = false;
@@ -323,6 +321,7 @@ pub trait Application: Sized {
                     &mut renderer,
                     &mut swap_chain,
                     &primitive,
+                    size.scale_factor(),
                     &debug.overlay(),
                 );