1 files changed, 7 insertions, 0 deletions
diff --git a/cc/quads/render_pass_id.h b/cc/quads/render_pass_id.h
index 5dff1e1..a0d48ea 100644
--- a/cc/quads/render_pass_id.h
+++ b/cc/quads/render_pass_id.h
@@ -9,6 +9,7 @@
 
 #include <tuple>
 
+#include "base/hash.h"
 #include "cc/base/cc_export.h"
 
 namespace cc {
@@ -33,6 +34,12 @@ class CC_EXPORT RenderPassId {
   }
 };
 
+struct RenderPassIdHash {
+  size_t operator()(RenderPassId key) const {
+    return base::HashInts(key.layer_id, static_cast<int>(key.index));
+  }
+};
+
 }  // namespace cc
 
 #endif  // CC_QUADS_RENDER_PASS_ID_H_