https://bugs.freedesktop.org/show_bug.cgi?id=30488
--- Comment #6 from Henri Verbeet hverbeet@gmail.com 2010-12-14 07:27:11 PST --- (In reply to comment #3)
I think I can see the problem. Wine uses the subset of ARB_texture_rg that depends on ARB_texture_float, i.e. it can only be used if ARB_texture_float is supported, but Wine doesn't appear to care and uses it anyway. This should be fixed in Wine.
This is actually fixed in current Wine versions. However, the application strikes me as a DirectDraw application that doesn't use those formats anyway, except during wined3d initialization to see what's available for FBO attachments. This could very well be a Wine bug, but I wouldn't be able to tell without doing actual debugging on the application.