http://bugs.winehq.org/show_bug.cgi?id=29869
--- Comment #3 from Henri Verbeet hverbeet@gmail.com 2012-02-12 09:03:27 CST --- Sounds similar to bug 28404. With a Z value of 300 the fragments probably aren't discarded by the depth test, but getting clipped. Perhaps disabling ZENABLE is supposed to ignore z values completely though.