Implement `Primitive::Cached`

1 files changed, 7 insertions, 6 deletions

diff --git a/wgpu/src/widget/canvas/layer.rs b/wgpu/src/widget/canvas/layer.rs
index 95e2d0ee..a46b7fb1 100644
--- a/wgpu/src/widget/canvas/layer.rs
+++ b/wgpu/src/widget/canvas/layer.rs
@@ -4,21 +4,22 @@ mod cache;
 pub use cache::Cache;
 
 use crate::Primitive;
+use iced_native::Size;
 
-use iced_native::{Point, Size};
+use std::sync::Arc;
 
 /// A layer that can be presented at a [`Canvas`].
 ///
 /// [`Canvas`]: ../struct.Canvas.html
 pub trait Layer: std::fmt::Debug {
-    /// Draws the [`Layer`] in the given bounds and produces [`Mesh2D`] as a
-    /// result.
+    /// Draws the [`Layer`] in the given bounds and produces a [`Primitive`] as
+    /// a result.
     ///
-    /// The [`Layer`] may choose to store the produced [`Mesh2D`] locally and
+    /// The [`Layer`] may choose to store the produced [`Primitive`] locally and
     /// only recompute it when the bounds change, its contents change, or is
     /// otherwise explicitly cleared by other means.
     ///
     /// [`Layer`]: trait.Layer.html
-    /// [`Mesh2D`]: ../../../triangle/struct.Mesh2D.html
-    fn draw(&self, origin: Point, bounds: Size) -> Primitive;
+    /// [`Primitive`]: ../../../enum.Primitive.html
+    fn draw(&self, bounds: Size) -> Arc<Primitive>;
 }