From 1a58f45d76fe7756dd365e099d1536da769c1eab Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Mon, 23 Sep 2019 14:02:02 -0400
Subject: VideoCore: Unify const buffer accessing along engines and provide
 ConstBufferLocker class to shaders.

---
 src/common/hash.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/common/hash.h')

diff --git a/src/common/hash.h b/src/common/hash.h
index 40194d1ee..c939709bc 100644
--- a/src/common/hash.h
+++ b/src/common/hash.h
@@ -6,6 +6,8 @@
 
 #include <cstddef>
 #include <cstring>
+#include <utility>
+#include <boost/functional/hash.hpp>
 #include "common/cityhash.h"
 #include "common/common_types.h"
 
@@ -68,4 +70,13 @@ struct HashableStruct {
     }
 };
 
+struct PairHash {
+    template <class T1, class T2>
+    std::size_t operator()(const std::pair<T1, T2>& pair) const {
+        std::size_t seed = std::hash<T1>()(pair.first);
+        boost::hash_combine(seed, std::hash<T2>()(pair.second));
+        return seed;
+    }
+};
+
 } // namespace Common
-- 
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