Rename compositor::Renderer to Default

graphics/src/backend.rs

@@ -10,11 +10,11 @@ use std::borrow::Cow;
 ///
 /// [`Renderer`]: crate::Renderer
 pub trait Backend: Sized {
-    /// The compositor of this [`Backend`].
-    type Compositor: Compositor<Renderer = Renderer<Self>>;
-
     /// The custom kind of primitives this [`Backend`] supports.
     type Primitive: TryFrom<Mesh, Error = &'static str>;
+
+    /// The default compositor of this [`Backend`].
+    type Compositor: Compositor<Renderer = Renderer<Self>>;
 }
 
 /// A graphics backend that supports text rendering.

graphics/src/compositor.rs

@@ -1,6 +1,5 @@
 //! A compositor is responsible for initializing a renderer and managing window
 //! surfaces.
-use crate::core;
 use crate::core::Color;
 use crate::futures::{MaybeSend, MaybeSync};
 use crate::{Error, Settings, Viewport};
@@ -90,8 +89,8 @@ impl<T> Window for T where
 {
 }
 
-/// A renderer that supports composition.
-pub trait Renderer: core::Renderer {
+/// Defines the default compositor of a renderer.
+pub trait Default {
     /// The compositor of the renderer.
     type Compositor: Compositor<Renderer = Self>;
 }
@@ -187,6 +186,6 @@ impl Compositor for () {
 }
 
 #[cfg(debug_assertions)]
-impl Renderer for () {
+impl Default for () {
     type Compositor = ();
 }

graphics/src/renderer.rs

@@ -261,7 +261,7 @@ where
     }
 }
 
-impl<B> compositor::Renderer for Renderer<B>
+impl<B> compositor::Default for Renderer<B>
 where
     B: Backend,
 {