https://bugs.winehq.org/show_bug.cgi?id=55945
--- Comment #10 from Esme Povirk madewokherd@gmail.com --- I'm noticing the "transform" and "effect" fields are NULL. The "effect" field is the hard part of this, so a semi-stub forwarding to GdipDrawImagePointsRect may work (though in the long run we will probably want to forward to some internal function that combines the capabilities of GdipDrawImagePointsRect with GdipDrawImageFX).
This will require some testing to find out what happens when those fields are NULL. It might result in an InvalidParameter error, or a NULL transform might be treated as an identity matrix.