Mailinglist Archive: radeonhd (265 mails)

[Matthias Hopf <mhopf@xxxxxxx>]

On Jan 05, 09 09:30:06 -0800, Yang Zhao wrote:
> I ended up going through the code paths for all the various
> gamma-related hooks in xorg-server, and noticed precision adjustment
> is done automatically for the XF86-VidModeExtension paths; only
> RandR's gamma hooks were causing issues.

AFAICS, RandR's gamma hook only deals with 256-Entry tables - could
*that* be an issue?

Just guessing wildly.

> Assuming 16-bit precision for the RandR gamma calls seems to be
> working fine so far, but RRCrtcGetGamma doesn't seem to be hooked up.
> Currently, gnome-screensaver is destroying the user set gamma ramp
> going in and out of screen saver, but I haven't verified whether or
> not the fix for this is in a release. I'm not seeing any code for it
> in radeonhd, though, and haven't managed to find how/if this can be
> done in the first place.

Good luck. As I said I have zero to no knowledge about this, and Luc
told me yesterday that this is approximately the only place in X where
he's actually scared of ;-)

Matthias

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