http://bugs.winehq.org/show_bug.cgi?id=10580
--- Comment #23 from Vitaliy Margolen vitaliy@kievinfo.com 2008-05-26 17:09:29 --- (In reply to comment #22)
I'd say go ahead and send a patch. Probably make the precision %.16f or something to be safe. There are other potential places where a similar adjustment is needed, maybe the sRGB constant loading.
Already did. Except used .12 precision - float has just 24 bits for mantissa - max 10 decimal digits.