On 14 Aug 2012, Andy Ritger told this:
> * PATCH 1 changes long standing behavior in xrandr(1). While the patch
> makes the semantics consistent with xgamma(1) and xorg.conf options,
> maybe it would be better to keep the existing behavior and just document
> that behavior in the man page
As I understand it: the gamma-correction tables configured through
XRR[GS]etCrtcGamma store 16:16:16 X Colors. An X Color has some number
of significant bits, stored in the MSBs of the X Color (reported
in Visual::bits_per_rgb, though the gamma-correction tables are
visual-independent). The signi
