How demonstrative pictorial reference grounds contextualism

In a very recent paper (forthcoming), Dominic McIver Lopes has claimed that pictures perceptually ground demonstrative reference to depicted objects. If as I think Lopes is right, this has important consequences for the debate on the semantics/pragmatics divide. For one can exploit Lopes’ claim in order to provide one more argument in favour of the contextualist well-known thesis that wide context has not only both a pre- and a post-semantic role, but also a semantic role – to put it in Perry’s (1997) terms.