1 files changed, 14 insertions, 0 deletions
diff --git a/vcl/inc/opengl/win/gdiimpl.hxx b/vcl/inc/opengl/win/gdiimpl.hxx
index bd0bea4ef246..7bf6d8bf85d5 100644
--- a/vcl/inc/opengl/win/gdiimpl.hxx
+++ b/vcl/inc/opengl/win/gdiimpl.hxx
@@ -50,6 +50,20 @@ public:
 
 };
 
+struct ControlCacheHashFunction
+{
+    std::size_t operator()(ControlCacheKey const& aCache) const
+    {
+        std::size_t seed = 0;
+        boost::hash_combine(seed, aCache.mnType);
+        boost::hash_combine(seed, aCache.mnPart);
+        boost::hash_combine(seed, aCache.mnState);
+        boost::hash_combine(seed, aCache.maSize.Width());
+        boost::hash_combine(seed, aCache.maSize.Height());
+        return seed;
+    }
+};
+
 typedef std::pair<ControlCacheKey, std::unique_ptr<TextureCombo>> ControlCachePair;
 typedef o3tl::lru_map<ControlCacheKey, std::unique_ptr<TextureCombo>, ControlCacheHashFunction> ControlCacheType;