http://bugs.winehq.org/show_bug.cgi?id=16318
--- Comment #2 from Dmitry Timoshkov dmitry@codeweavers.com 2008-12-03 21:47:35 --- Created an attachment (id=17629) --> (http://bugs.winehq.org/attachment.cgi?id=17629) Make an intermediate copy of the matrix
Does the attached patch help?