added globPtr for GpuMat

modules/cudev/include/opencv2/cudev/ptr2d/glob.hpp

@@ -91,6 +91,17 @@ __host__ GlobPtrSz<T> globPtr(T* data, size_t step, int rows, int cols)
     return p;
 }
 
+template <typename T>
+__host__ GlobPtrSz<T> globPtr(const GpuMat& mat)
+{
+    GlobPtrSz<T> p;
+    p.data = (T*) mat.data;
+    p.step = mat.step;
+    p.rows = mat.rows;
+    p.cols = mat.cols;
+    return p;
+}
+
 template <typename T> struct PtrTraits< GlobPtrSz<T> > : PtrTraitsBase<GlobPtrSz<T>, GlobPtr<T> >
 {
 };