Change structure member sType to non-const to allow default assignment operator. Make copy constructor and copy assignment default. The latter is required for C++20 designated initializers. Delegate the constructor from C-type to the copy constructor by casting rhs accordingly. Fix warnings on gcc/clang.

samples/RayTracing/CameraManipulator.hpp

@@ -15,7 +15,17 @@
 
 #pragma once
 
+#if defined( _MSC_VER )
+#  pragma warning( push )
+#  pragma warning( disable : 4127 )  // conditional expression is constant (glm)
+#endif
+
 #include <glm/glm.hpp>
+
+#if defined( _MSC_VER )
+#  pragma warning( pop )
+#endif
+
 #include <vulkan/vulkan.hpp>
 
 namespace vk