[argyllcms] Re: CC Profiles In X Specification and dispwin
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 14 Jan 2008 11:49:01 +1100
Hal V. Engel wrote:
Applications like xcalib and dispwin use a more complex API that is actually
passed a complete copy of the new version of the video card LUT. This allows
for the LUT curves to have arbitrary shapes even to the point of having
discontinuities and/or reversals in the curves (this should be avoided but
the xserver does not check for this). For example it is possible this way to
have parts of the new curve be both above and below the default linear curve
and this is not possible with the API that is used by xgamma.
Actually the MSWindows API rejects any curves that are too weird. There are
some other API's (used by video games) that don't have these checks on
them, so that they can be used for effects.
Graeme Gill.
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