1 files changed, 3 insertions, 21 deletions
diff --git a/graphics/src/cached.rs b/graphics/src/cached.rs
index b52f9d9d..c0e4e029 100644
--- a/graphics/src/cached.rs
+++ b/graphics/src/cached.rs
@@ -1,11 +1,7 @@
-use crate::Primitive;
-
-use std::sync::Arc;
-
 /// A piece of data that can be cached.
 pub trait Cached: Sized {
     /// The type of cache produced.
-    type Cache;
+    type Cache: Clone;
 
     /// Loads the [`Cache`] into a proper instance.
     ///
@@ -15,21 +11,7 @@ pub trait Cached: Sized {
     /// Caches this value, producing its corresponding [`Cache`].
     ///
     /// [`Cache`]: Self::Cache
-    fn cache(self) -> Self::Cache;
-}
-
-impl<T> Cached for Primitive<T> {
-    type Cache = Arc<Self>;
-
-    fn load(cache: &Arc<Self>) -> Self {
-        Self::Cache {
-            content: cache.clone(),
-        }
-    }
-
-    fn cache(self) -> Arc<Self> {
-        Arc::new(self)
-    }
+    fn cache(self, previous: Option<Self::Cache>) -> Self::Cache;
 }
 
 #[cfg(debug_assertions)]
@@ -38,5 +20,5 @@ impl Cached for () {
 
     fn load(_cache: &Self::Cache) -> Self {}
 
-    fn cache(self) -> Self::Cache {}
+    fn cache(self, _previous: Option<Self::Cache>) -> Self::Cache {}
 }