http://bugs.winehq.org/show_bug.cgi?id=10047
Summary: Oblivion water lacks transparency Product: Wine Version: 0.9.47. Platform: PC-x86-64 OS/Version: Linux Status: NEW Severity: minor Priority: P2 Component: wine-directx-d3d AssignedTo: wine-bugs@winehq.org ReportedBy: ben@atomnet.co.uk
As per the summary, the water in Oblivion is entirely opaque, even switching to FBO (which fixes the lack of shader effects) doesn't solve it.