http://bugs.winehq.org/show_bug.cgi?id=24679
--- Comment #15 from aerilius@googlemail.com 2012-05-17 08:35:25 CDT --- This seems to be fixed with the DIB engine's new OpenGL support in Wine 1.5.4.
SketchUp can now successfully export to png and jpg (neither black nor transparent anymore) and all depending features work (file/scene/component thumbnails, print preview and sketchy styles).