http://bugs.winehq.org/show_bug.cgi?id=18728
--- Comment #32 from Henri Verbeet hverbeet@gmail.com 2010-07-05 14:16:32 --- No, that's different. In your case there's actually a multisampled framebuffer object involved. The system framebuffer object is always supposed to behave as a single-sampled buffer, regardless of any multisampling settings. I.e., if this test case did actual stretching it would still be supposed to work.