My position is that a world described in terms of purely physical properties or purely computational properties does not contain qualia. Such a description itself would contain no reference to qualia.

If this is an argument with the second sentence as premise, it's a non sequitur. I can give you a description of the 1000 brightest objects in the night sky without mentioning the Evening Star; but that does not mean that the night sky lacked the Evening Star or that my description was incomplete.