CreateInstanceInContextStructure
It is allowed to have more then 1 InstanceInContext structures per instance.
InstanceInContext structures are updated dynamically when the geometry
structure is updated.
Syntax
// Visual Studio for Windows public: __int64 __declspec(dllexport) __stdcall CreateInstanceInContextStructure( __int64 owlInstance ); // Linux, OS-X and non-Visual Studio Windows solutions public: int64_t CreateInstanceInContextStructure( int64_t owlInstance );