DirectDraw tests show that cross-device blits are supposed to work for
limited cases between system memory surfaces. However, cross-device
blits are unsafe in wined3d, especially with CSMT enabled.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45382Signed-off-by: Józef Kucia <jkucia@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>