[Bug 31754] Full-page Silverlight 5.x on Firefox fails to render on top of browser elements

http://bugs.winehq.org/show_bug.cgi?id=31754

--- Comment #9 from Henri Verbeet  2013-06-12 10:39:04 CDT ---
(In reply to comment #8)
> IIRC the app is passing an HWND_MESSAGE as focus_window, and wined3d was
> relying on SetPixelFormat to fail on that window to trigger the backup code
> path.

Assuming you mean swapchain_get_backup_dc() in context_set_gl_context(), that
makes some sense, but I don't see how that would result in visible rendering.