Increments the memory object reference count.
cl_int clRetainMemObject(cl_mem memobj)
A valid memory object.
CL_SUCCESS if the function is executed successfully.
Otherwise, it returns one of the following errors:
memobjis a not a valid memory object (buffer or image object).
CL_OUT_OF_RESOURCESif there is a failure to allocate resources required by the OpenCL implementation on the device.
CL_OUT_OF_HOST_MEMORYif there is a failure to allocate resources required by the OpenCL implementation on the host.