http://bugs.winehq.org/show_bug.cgi?id=12777
Vitaliy Margolen vitaliy@kievinfo.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |WONTFIX
--- Comment #5 from Vitaliy Margolen vitaliy@kievinfo.com 2008-06-11 00:28:17 --- I see why I didn't have it - I set "OffscreenRenderingMode"="fbo". Without that (with default being backbuffer) I'm getting the same message.
I'm not sure there is anything could be done here. the R5G6B5 mode is a 16-bit mode. Wine can't switch BPP since X does not support that. And backbuffer works with the screen color depth only.
So I'm guessing this one is a won't fix.