give proper move semantics to Handle<>

filament/backend/include/backend/Handle.h

@@ -75,6 +75,19 @@ protected:
     HandleBase(HandleBase const& rhs) noexcept = default;
     HandleBase& operator=(HandleBase const& rhs) noexcept = default;
 
+    HandleBase(HandleBase&& rhs) noexcept
+            : object(rhs.object) {
+        rhs.object = nullid;
+    }
+
+    HandleBase& operator=(HandleBase&& rhs) noexcept {
+        if (this != &rhs) {
+            object = rhs.object;
+            rhs.object = nullid;
+        }
+        return *this;
+    }
+
 private:
     HandleId object;
 };
@@ -89,8 +102,10 @@ struct Handle : public HandleBase {
     Handle() noexcept = default;
 
     Handle(Handle const& rhs) noexcept = default;
+    Handle(Handle&& rhs) noexcept = default;
 
     Handle& operator=(Handle const& rhs) noexcept = default;
+    Handle& operator=(Handle&& rhs) noexcept = default;
 
     explicit Handle(HandleId id) noexcept : HandleBase(id) { }
 

filament/src/details/VertexBuffer.cpp

@@ -314,7 +314,7 @@ FVertexBuffer::FVertexBuffer(FEngine& engine, const VertexBuffer::Builder& build
 void FVertexBuffer::terminate(FEngine& engine) {
     FEngine::DriverApi& driver = engine.getDriverApi();
     if (!mBufferObjectsEnabled) {
-        for (BufferObjectHandle const bo : mBufferObjects) {
+        for (BufferObjectHandle bo : mBufferObjects) {
             driver.destroyBufferObject(bo);
         }
     }

libs/utils/include/utils/StructureOfArrays.h

@@ -513,7 +513,7 @@ public:
             return (soa.elementAt<E>(i) = other);
         }
         UTILS_ALWAYS_INLINE Type const& operator = (Type&& other) noexcept {
-            return (soa.elementAt<E>(i) = other);
+            return (soa.elementAt<E>(i) = std::forward<Type>(other));
         }
         // comparisons
         UTILS_ALWAYS_INLINE bool operator==(Type const& other) const {