Implement native asset pipeline and cache (#64)

crates/libremetaverse/src/client_core.rs

@@ -120,6 +120,7 @@ struct ClientRuntime {
     agent_manager: Mutex<std::sync::Weak<crate::agent_manager::AgentManagerInner>>,
     inventory_manager: Mutex<Option<Arc<crate::inventory_manager::InventoryManagerInner>>>,
     inventory_ais_client: Mutex<Option<crate::inventory_ais::InventoryAISClient>>,
+    asset_manager: Mutex<Option<Arc<crate::asset_manager::AssetManagerInner>>>,
     shutdown_complete: Condvar,
     shutdown_wait: Mutex<()>,
 }
@@ -150,6 +151,7 @@ impl ClientRuntime {
             agent_manager: Mutex::new(std::sync::Weak::new()),
             inventory_manager: Mutex::new(None),
             inventory_ais_client: Mutex::new(None),
+            asset_manager: Mutex::new(None),
             shutdown_complete: Condvar::new(),
             shutdown_wait: Mutex::new(()),
         }
@@ -447,6 +449,29 @@ impl GridClient {
         Ok(manager)
     }
 
+    pub(crate) fn native_assets(&self) -> Result<crate::AssetManager, crate::Error> {
+        let mut cached = self
+            .runtime
+            .asset_manager
+            .lock()
+            .unwrap_or_else(std::sync::PoisonError::into_inner);
+        if let Some(inner) = cached.as_ref() {
+            return crate::asset_manager::AssetManager::native_from_inner(Arc::clone(inner));
+        }
+        let manager = crate::asset_manager::AssetManager::new(Some(self.clone()))?;
+        *cached = Some(manager.native_inner());
+        Ok(manager)
+    }
+
+    #[allow(clippy::needless_pass_by_value)]
+    pub(crate) fn native_set_assets(&mut self, value: crate::AssetManager) {
+        *self
+            .runtime
+            .asset_manager
+            .lock()
+            .unwrap_or_else(std::sync::PoisonError::into_inner) = Some(value.native_inner());
+    }
+
     pub(crate) fn native_ais_client(&self) -> Result<crate::InventoryAISClient, crate::Error> {
         let mut cached = self
             .runtime