From 3a744d475b947283bf4d30d5337d8e850436e6dd Mon Sep 17 00:00:00 2001
From: Lee Salzman <lsalzman@gmail.com>
Date: Thu, 19 Apr 2018 14:53:44 -0400
Subject: [PATCH] add clear_namespace hook to BlobImageRenderer trait

---
 webrender/examples/blob.rs      | 1 +
 webrender/src/resource_cache.rs | 4 ++++
 webrender_api/src/image.rs      | 2 ++
 wrench/src/blob.rs              | 2 ++
 4 files changed, 9 insertions(+)

diff --git a/webrender/examples/blob.rs b/webrender/examples/blob.rs
index 9d7cfa7fb2..42c1002b85 100644
--- a/webrender/examples/blob.rs
+++ b/webrender/examples/blob.rs
@@ -215,6 +215,7 @@ impl api::BlobImageRenderer for CheckerboardRenderer {
     }
     fn delete_font(&mut self, _font: api::FontKey) {}
     fn delete_font_instance(&mut self, _instance: api::FontInstanceKey) {}
+    fn clear_namespace(&mut self, _namespace: api::IdNamespace) {}
 }
 
 struct App {}
diff --git a/webrender/src/resource_cache.rs b/webrender/src/resource_cache.rs
index ba469e0282..a6ce5fc725 100644
--- a/webrender/src/resource_cache.rs
+++ b/webrender/src/resource_cache.rs
@@ -1105,6 +1105,10 @@ impl ResourceCache {
             .retain(|key, _| key.0 != namespace);
         self.cached_glyphs
             .clear_fonts(|font| font.font_key.0 == namespace);
+
+        if let Some(ref mut r) = self.blob_image_renderer {
+            r.clear_namespace(namespace);
+        }
     }
 }
 
diff --git a/webrender_api/src/image.rs b/webrender_api/src/image.rs
index c806b93f14..31cfcb4028 100644
--- a/webrender_api/src/image.rs
+++ b/webrender_api/src/image.rs
@@ -191,6 +191,8 @@ pub trait BlobImageRenderer: Send {
     fn delete_font(&mut self, key: FontKey);
 
     fn delete_font_instance(&mut self, key: FontInstanceKey);
+
+    fn clear_namespace(&mut self, namespace: IdNamespace);
 }
 
 pub type BlobImageData = Vec<u8>;
diff --git a/wrench/src/blob.rs b/wrench/src/blob.rs
index 2c198981ab..c66a2a3b32 100644
--- a/wrench/src/blob.rs
+++ b/wrench/src/blob.rs
@@ -164,4 +164,6 @@ impl BlobImageRenderer for CheckerboardRenderer {
     fn delete_font(&mut self, _key: FontKey) {}
 
     fn delete_font_instance(&mut self, _key: FontInstanceKey) {}
+
+    fn clear_namespace(&mut self, _namespace: IdNamespace) {}
 }