From 4dbfca239007134d269d78bdfb5dc6c7abd41828 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Wed, 2 Sep 2020 16:33:43 +0100
Subject: [PATCH] Add std::hash overload for ResourceId to allow use in
 hashmaps/hashsets

---
 renderdoc/api/replay/resourceid.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/renderdoc/api/replay/resourceid.h b/renderdoc/api/replay/resourceid.h
index c41e5d044..4a17ee77f 100644
--- a/renderdoc/api/replay/resourceid.h
+++ b/renderdoc/api/replay/resourceid.h
@@ -73,6 +73,7 @@ private:
 
 #ifdef RENDERDOC_EXPORTS
   friend ResourceId ResourceIDGen::GetNewUniqueID();
+  friend struct std::hash<ResourceId>;
 #endif
 };
 
@@ -83,3 +84,15 @@ Q_DECLARE_METATYPE(ResourceId);
 #endif
 
 DECLARE_REFLECTION_STRUCT(ResourceId);
+
+// add a std::hash overload so ResourceId can be used in hashmaps
+#ifdef RENDERDOC_EXPORTS
+namespace std
+{
+template <>
+struct hash<ResourceId>
+{
+  std::size_t operator()(const ResourceId &id) const { return std::hash<uint64_t>()(id.id); }
+};
+}
+#endif