I would like to use the Calibri font for text and the concmath font for math. The latter is a bitmapped font and therefore it is rendered with rough edges by default. In pdflatex, one can set the resolution of the bitmapped font using (for example)
But this doesn't work in XeLatex which I need in order to use Calibri.
Is there a similar command in XeLatex for changing the resolution of bitmapped fonts?